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Publication numberUS3875662 A
Publication typeGrant
Publication dateApr 8, 1975
Filing dateDec 12, 1973
Priority dateDec 12, 1973
Publication numberUS 3875662 A, US 3875662A, US-A-3875662, US3875662 A, US3875662A
InventorsFolk Kenneth Foster
Original AssigneeAmp Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and apparatus for shearing the free end portions of a plurality of leads, moving the ends of the leads after shearing, and applying terminals to the ends after they have been sheared
US 3875662 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

United States Patent [191 Folk 1 1 Apr. 8, 1975 [75] Inventor: Kenneth Foster Folk. Harrisburg.

[73] Assignee: AMP Incorporated. Harrisburg. Pa.

122] Filed: Dec. 12. 1973 121] App]. No.: 424.130

[52] US. CI. 29/628; 29/203 DT; 29/203 US; 29/203 P; 29/630 A [51] Int. Cl H01! 43/00 158] Field of Search..... 29/203 D. 203 DT. 203 DS. 29/203 P. 203 MW, 407. 461. 628. 629. 630 B; 140/147; 113/119; 72/324. 404

OTHER REFERENCES IBM Technical Disclosure Bulletin. Vol. 6. No. 4. pp. 28-29.

Primary Examiner-C. W. Lanham Assislunt E.\'uminerJames R. Duzan Attorney. Agent. or Firm-William J. Keating. Esq.

(57] ABSTRACT A method and apparatus for shearing the free end portions of a plurality of leads and subsequently simultaneously applying terminals to the terminal end portions of the leads which remain after shearing. the terminal end portions of the leads being moved after the shearing operation and prior to the terminal applying operation. The free end portions of the plurality of leads extend outwardly from one end of a template. the template having a plurality of grooves in which other portions of a plurality of leads are disposed. The template is mounted for vertical movement and is held in a raised position as the other positions of the leads are positioned in the grooves and is also held in the raised position during the shearing operation. After the free end portions of the leads have been sheared. the template. along with the leads. are moved downwardly and terminals are then crimped about the terminal end portions of the leads which remain after shearing. It is a further feature of this invention to shift the shearing means from a first position adjacent one end of the template means to a second position spaced away from the template means after shearing and before the terminals are crimpcd about the terminal end portions.

18 Claims. 12 Drawing Figures PLTENTEBAPR 8i975 SUIT 10F 6 FLFENTED APR 8 Iii-75 METHOD AND APPARATUS FOR SHEARING THE FREE END PORTIONS OF A PLURALITY OF LEADS, MOVING THE ENDS OF THE LEADS AFTER SHEARING, AND APPLYING TERMINALS TO THE ENDS AFTER THEY HAVE BEEN SHEARED CROSS REFERENCE TO RELATED APPLICATIONS This application relates to U.S. Application Ser. No. 389,924 filed Aug. 20, 1973 and entitled Method And Apparatus For Positioning Leading Portions Of Individual Wires Of A Plurality Of Wires In Spaced Apart Relationships With Respect To Each Other And A Template Utilized In Accomplishing The Same," and also to U.S. Application Ser. No. 424,129 filed concurrently with this application and entitled Method And Apparatus For Varying The Relative Length Of A Plurality Of Leads And For Performing Work Operations On The Ends Of Leads Of Differing Relative Length," both of these related applications being assigned to the same assignee as this application, and the second of these related applications being a continuation-in-part of the first application. This application is also related to U.S. Applications Ser. Nos. 424,l3l and 424,132 which were filed concurrently with this application and which are also commonly assigned.

FIELD OF THE INVENTION The present invention relates generally to a method and apparatus for shearing the free end portions of a plurality of leads and for applying terminals to the ends of the free end lead sections after the leads have been sheared. More particularly, the present invention relates to a method and apparatus for supporting a plurality of leads by a movable template in a first position during the shearing of the ends of the leads and of then moving the template to a second position where a plurality of terminals are crimped about the ends of the leads.

BACKGROUND OF THE INVENTION In U.S. Application Ser. No. 389,924 a method and apparatus is disclosed which positions a plurality of as sociated leads in spaced relationship with respect to each other, this positioning being done by an apparatus which include a template having a plurality of spaced apart grooves capable of receiving only a single lead. Portions of a plurality of leads having free ends are forced into the plurality of grooves by an oscillating roller or the like which is biased towards the template and moves from one end of the grooves to an end of the grooves disposed adjacent one end of the template. Free end portions of the leads will extend beyond said one end of the template after the other portions of the leads have been forced into the grooves, and these free end portions are then in locations generally suitable for subsequent machine operations which may include the trimming of the ends of the leads, the application of a plurality of terminals or the like to the ends of the free end portions, and/or other operations.

It has been found that the shearing or trimming operation and the terminal applying operation, which are somewhat schematically illustrated in U.S. Application Ser. No. 424, l 29, cannot be advantageously performed in the same location. In this connection it should be noted first that the terminals have spaced apart sidewalls which are to be crimped about the terminal end portions of the leads by crimper and anvil means, and it is necessary that the ends of the sidewalls of the terminals clear the terminal end portions of the leads as they are conveyed to their desired locations suitable for crimping. After the terminals have been moved to their desired locations it is then necessary to move the terminal end portions relative to the terminals to position them between the spaced apart sidewalls before satisfactory crimping can be accomplished. As a portion of the leads immediately adjacent the terminal portion of the leads are supported by template means, it is also necessary that there be relative movement of the template means to the terminals in order to obtain satisfactory positioning of the terminal end portions. It should also be noted that the shearing means, which include an upper and lower shear blade, shear the ends of the leads along a line spaced away from one end of the template means which support the free end portions of the leads, the shearing line lying in a vertical plane which would pass through portions of the terminals which are to be secured to the terminal end portions of the leads. Thus, it is not possible to support the terminals with portions of the terminals being disposed between the shears as the terminals would be sheared during the shearing of the free end portions of the leads. Therefore, it is necessary to dispose the terminals outside of the shearing zone during the shearing of the free end portions of the leads, and, after shearing, move the terminal end portions and the terminals relative to each other. It has been found that this relative movement can be advantageously achieved by moving the template means between a first position which is generally in alignment with the shearing means to a second lowered position wherein the terminal end portions of the leads which project beyond the end of the template means after shearing are laid within the barrel portion of the terminal between the spaced apart sidewalls. One of the reasons for doing this has been that it has been found desirable to rigidly mount the anvil means with which the crimper means cooperates, the anvil means supporting the barrel portion of the terminals during the crimping of the terminals about the terminal end portions of the leads. It should also be apparent that it is not practical to rigidly mount the crimper and move the anvil towards the crimper, as the crimper, if rigidly positioned, would interfere with the positioning of the leads on the template means and past the shearing means and would also interfere with the shearing operation. It has also been found desirable to mount the shearing means and the crimping means on a common press frame and to move both the upper shear blade and the crimper means downwardly to perform their operations, the crimper means engaging a fixed anvil.

OBJECTS AND SUMMARY OF THE INVENTION It is a principle object of the present invention to provide a method and apparatus for positioning the terminal end portions of a plurality of leads which remain after shearing between spaced apart sidewalls of the terminals before the spaced apart sidewalls of the terminals are crimped about the terminal end portions of the leads to affix the terminals to the ends of the leads.

More specifically, it is an object of the present invention to position the free end portions of a plurality of leads in a first position, to shear the ends of the free end portions to leave terminal end portions. to move the terminal end portions to a second position, and to affix terminals to the terminal end portions of the leads.

It is a further object of the present invention to support a template in a raised position, the template having a plurality of grooves in which portions of a plurality of leads are disposed. free end portions of the plurality of leads extending beyond one end of the template means, to shear the free end portions to leave terminal end portions of the leads also extending beyond the end of the template means. to move the template means to a second lower position. and to affix terminals to the terminal end portions of the leads after the template means has been moved to its second position.

It is a still further object of the present invention to support a plurality of leads in spaced apart grooves on template means. free end portions of the leads extending beyond one end of the template means, to shear the ends of the free end portions to leave terminal end por tions of the leads extending beyond one end of the ternplate means. to move a crimper downwardly towards the template means. the crimper means carrying structure which is engagable with one end of the template means and operable to move the template means toward a second position as the crimper means continues its downward movement. and to crimp terminals about the terminal end portions of the leads as the crimper means and template means attain their lowermost positions.

It is another object of the present invention to provide an apparatus for positioning a plurality of leads in a plurality of grooves on a template with free end portions of the plurality of leads extending beyond one end of the template. for shearing the ends of the free end portions to leave terminal end portions, for shifting the template from the position in which it is disposed during the shearing ofthe free end portions to a second position. and for applying terminals to the terminal end portions of the leads as the template attains its second position.

These and other objects and advantages of the present invention are accomplished by providing an appa ratus including a template having a plurality of grooves which extend to one end of the template, each of the grooves being capable of receiving only a single lead. and also by providing structure for shearing the ends of the plurality of leads. the shearing structure being disposed adjacent said one end of the template and including a lower shear blade and an upper movable shear blade, by disposing portions of a plurality of leads in said grooves with free end portions of the leads extending beyond one end of the template and past the shearing means. by shearing the ends of the free end portions to leave terminal end portions extending beyond the end of the template, by supporting a plurality of terminals below the terminal end sections. the terminals having spaced apart sidewalls capable of receiving the terminal end portions, and part ofthe terminals being supported by anvil means. and by moving a crimper towards the anvil means. the crimper as it is moved towards said anvil means carnming the shearing means away from said end of the template, said crimping means also carrying a wire clamp plate mounted for sliding movement between an initial clamping position and a stop position. the wire clamp plate initially contacting an end of the template and sliding toward its stop position during a portion of the downward movement of the crimper means until the wire clamp plate attains its stop position. further downward movement of the crimper means causing the wire clamp plate when in its stop position to move the template down wardly against spring means. the sidewalls of the terminals being crimped about the terminal end portions of the leads as the template and crimper means attain their lowermost position.

These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following description taken in conjunction with the accompanying drawings in which a preferred form of this invention is illustrated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view ofa portion of an apparatus which is utilized to perform the method of this application.

FIG. 2 is a perspective view of a portion of the apparatus shown in FIG. 1, this Figure showing one end of a multi-lead cable being disposed adjacent one end of a template having a plurality of spaced apart grooves, the mechanisms which engage the free end lead sections that extend outwardly from the multi-lead cable to properly position the ends and to force the free end lead sections into the grooves being shown in their inoperative positions.

FIG. 3 is a view similar to FIG. 2 showing the mechanism which engages the leads in its initial engaging po sition.

FIG. 4 is a view similar to FIGS. 2 and 3 showing the mechanism which engages the leads after it has moved the ends of the free end sections past the end of the template and also showing the mechanism which positions the leads into the grooves in its initial engaging position with the leads.

FIG. 5 is a view similar to FIGS. 2 and 4 showing the lead positioning mechanism adjacent the end of the template remote from the end of the multi-lead cable.

FIG. 6 is a section through the apparatus shown in FIG. 1 showing a portion of the lead positioning mechanism adjacent the end ofthe template remote from the end of the multi-lead cable, and the lead positioning mechanism past the ends of the leads.

FIGS. 7, 8, and 9 are partial sectional views similar to FIG. 6 showing further operations performed upon the ends of the leads, FIG. 7 showing the initial contact of the trimming mechanism with the ends of the leads. FIG. 8 showing the completion of the trimming of the ends of the leads, and FIG. 9 showing the application of terminals to the ends of the leads.

FIG. 8A is a view taken along the lines 8A-8A in FIG. 8.

FIG. 10 is a side elevational view of the multi-lead holding mechanism taken along the lines 10-10 in FIG. 6 with parts being broken away for purposes of clarity, the holding mechanism being shown in its open position wherein it is adapted to receive one end of the multi-lead cable.

FIG. 11 is a view similar to FIG. 10 and shows the holding mechanism in its closed position.

DESCRIPTION OF THE EMBODIMENT SHOWN IN THE DRAWINGS In the embodiment illustrated in the drawings an apparatus is illustrated which is utilized to perform work operations upon the free end lead sections of a multilead cable. It should be noted that this invention is suitable for performing work operations upon the free ends of leads other than the free end lead sections which extend from a multi-lead cable. and that slightly different forms of apparatus may be employed for differing work pieces.

Referring first to FIG. I, a bench mounted apparatus indicated generally at I0, is shown mounted upon the top 12 of a bench. Mounted above the top of the bench are a press 14, terminal conveyor 16, holding means 18 operable to hold an end of a multi-lead cable. template means 20, lead engaging means 22 operable to move the ends of the free end lead sections which extend outwardly from the end of a multi-lead cable, and lead positioning means 24 which are operable to force the free end lead sections into grooves on the template means 20. Mounted on the press 14 are lead trimming means, and terminal applying means which will be described below. It should be noted at this point that various of the mechanisms are operatively connected to timed drives which cause the various mechanisms to be oper ated in a preferred sequential manner. some of the drives extending through an aperture 26 in the top of the bench. Since various timed drives may be suitably employed in the operation of the apparatus shown. many of these mechanisms have not been shown.

The template means includes a template 30, the template 30 having a plurality of grooves 32 formed in its upper surface. Each of the grooves 32 is of a size selected so that it can only accommodate one of the free end lead sections 34, the grooves having ends 36 which terminate at one end 38 of the template 30. This can be seen best from FIGS. 2 to 4. The ends 36 of the grooves at the end 38 of the template are spaced apart in a predetermined spatial relationship with respect to each other. At the other end of the template the other ends 40 of the grooves are disposed in juxtapositioned relationship with respect to each other. The other ends 40 of the grooves are so positioned so they can readily receive that portion of the free end sections of the leads 34 which extend outwardly from one end 42 of a multilead cable, indicated generally at 43. The multi-lead cable 43 has insulation 44 (FIG. 11) disposed about a plurality of leads 45. Before the multi-lead cable 43 is engaged by the holding means 18 of the apparatus, a portion of the insulation is stripped from the leads to expose the free end lead sections 34, each of the free end lead sections having an end 46. The portion of the insulation left about the leads 45 terminates in a facing edge 47. A sufficient amount of insulation is stripped from the end of the cable so that when the free end lead sections 34 are positioned in the grooves 32 of the template 30, a terminal end portion of the sections 34 will project beyond the end 38 of the template.

The template 30 is supported for relative vertical movement by a template support structure, indicated generally at 48, details of the structure 48 being described below. It should be noted at this point that the template is shown in its lower position in FIGS. 1, 2 and 9 and its raised position in FIGS. 3 through 8.

As previously noted the apparatus shown in these drawings is suitable for working upon the free end lead sections 34 of the multi-lead cable 43. The holding means 18 is employed to hold the end 42 of the multilead cable in proper oriented relationship with respect to the template 30, and particularly with respect to the other ends 40 of the grooves 32. The holding means includes a pivoted member 50 disposed between a sidewall SI of a cut out portion or recess 52 of front member 53 and a sidewall 54 of backing plate 55. The pivoted member 50 has a channel-shaped handle portion 56 secured thereto, the channel-shaped handle portion extending forwardly of the member 50. The member 50 also includes a channel-shaped portion 58 which includes spaced apart sides 60, 62. The front member 53 is provided with an upper opening or notch 64 and the handle 56 extends through the notch 64. The member 50 is moved between a multi-lead cable receiving position shown in FIG. 10 to a multi-lead cable holding position shown in FIG. 11 through manual movement of the handle by the operator of the apparatus. When the pivoted member is in its cable receiving position shown in FIG. 10 and also in FIG. 1 the lower surface 66 of the handle portion 56 is in contact with the lower edge 68 of the notch 64. Similarly, when the pivoted member is in its holding position shown in FIG. 11 the right hand edge 69 of the member 50 is in contact with the right edge 70 of the recess 52. In this position the sides 60 and 62 extend generally upwardly and define with the upper wall 71 of the notch 64 a cavity or opening which receives and holds an end of the cable 42 in its desired position. The member 50 is supported for pivotal movement by a pivot pin 72 disposed for vertical sliding movement in elongated vertically extending aperture 74, 76 in the front member 53 and the rear backing plate 55. The front member 53 has a lower portion 78 which extends under the pivoted member 50. and the lower portion 78 is provided with a vertical aperture 79 that receives a sliding pin 80. The pin is normally biased upwardly by a spring 82, the upper end of the spring 82 being in contact with the sliding pin 80 and the lower end of the spring 82 being supported by a spring retaining member 84 which is secured to the lower surface of the lower portion 78 by means of cap screws 86. The pivoted member 50 is also provided with a cam surface 88 which contacts the upper surface of the pin 80, and the spring biased pin 80 cooperates with the cam surface 88 in such a manner that the piv oted member is restrained from movement when it is either in its multi-lead cable receiving position shown in FIG. 10 or in its multi-lead cable holding position shown in FIG. 11. By the employment of a pivot pin 72 which is movable in elongated apertures 74 and 76 and through the engagement of the pivoted member 50 with the spring biased pin, it should be noted that the pivoted member 50 can shift vertically when it is in its holding position shown in FIG. 11 so that different sized multi-lead cables can be held by the holding means 18.

A vertically disposed plate 90 (FIG. 6) is held in spaced apart relationship to the backing plate 55, the plate 90 being secured by welding or the like to L- shaped members 92 which are in turn secured by capscrews 94 to the backing plate 55, the capscrews also serving to hold the plate 55 to the member 53. The upper end of the plate 90 is provided with a guide surface 98. In practice the surface 98 adjacent the end 42 of the multi-lead cable is used to gauge the position of the cable 43 in the holding means 18. Thus. when positioning the end of the multi-lead cable in the holding device 18 it is desirable to bring the end 47 of the insulation 44 into contact with the surface 98 of the plate 90 prior to the handle 56 being swung from its lower position shown in FIG. 10 to its raised holding position shown in FIG. 11. This insures that the free end lead sections 34 and the end 42 of the cable will be properly positioned with respect to the grooves 32 in the template.

The holding means 18 is supported on the frame by a pair of outwardly extending rods 100 which are suitably secured at one end to a portion of the apparatus. the rods 100 in turn passing through suitable apertures in the lower portion 78 of the front member 53. the from member 53 being adjustably secured to the rods 100 by screws 102.

In accordance with the principles disclosed in U.S. Application Ser. No. 389.924 the free end lead sections 34 of the multi-lead cable 43 are rolled into the grooves 32 on the template 30 by lead positioning means to orient the terminal end portions of the free end lead sections 34 at the end of the template so that subsequent work operations can be performed upon the ends of the leads by automatic machinery. The lead positioning means employed in this apparatus include roller means indicated generally at 110, the roller means including a roller 112 and a roller support 114. First roller mounting means 116 mount the roller means 110 for rotational movement about an axis concentric with the axis of the tubular member 118 which is transverse to the axis of the roller 112, the tubular member being spaced away from one end of the roller tubular member being spaced away from one end of the roller 112. To this end, the first roller mounting means 116 is journaled about the outer end of the tubular member 118 and is caused to rotate about the tubular member 118 by an internal rotatable shaft 120. Thus, by rotating the shaft 120 the roller means may be disposed in either a raised inoperative position as shown in FIGS. 1, 2 and 3 or in a lower operative position as shown in FIGS. 4 through 9. The tubular member 118 serves as a second roller mounting means and it can be extended toward and away from the holding means 18 to dispose the rol ler means between either a first position which is spaced adjacent the end of the plurality of grooves that are disposed adjacent the holding means and a second position disposed adjacent the ends of the grooves 36 adjacent the end 38 of the template remote from the holding means 18. The means to extend and retract the tubular member is not shown and is considered conventional, however, it should be noted that the tubular member 118 is journaled for sliding movement in bear ing 122.

In operation the roller means are progressively moved from the raised inoperative position adjacent the holding means, wherein the roller is disposed above the other ends 40 of the grooves as shown in FIG. 2, to a lowered position as shown in FIG. 4, where the roller applies a compressive force to the free end lead sections to initially position them in the other end 40 of the grooves. and the roller is then moved along the grooves toward the end 36 of the grooves to progressively force the free end lead sections 34 into the grooves. Upon the completion of the work operation upon the leads the roller is then moved to its raised position adjacent the other ends 40 of the grooves and the cycle is then repeated. During the rolling operation it has been found desirable to oscillate the roller 112 in a transverse manner as indicated by the arrow 124 and suitable means may be provided to so oscillate the roller.

It has been found necessary to properly position the ends of the leads in some situations. Thus, before the leads are initially engaged by the roller, the ends of the leads must be moved away from the area of initial contact by the roller. Similarly, the ends of the leads must be moved beyond the end of the template before the roller completes its movement toward the end of the template. Also, before the leads are engaged by the lead trimming means, the ends of the leads must be moved past the lead trimming means. The movement of the ends of the leads can be completed before the leads are initially engaged by the roller, or the movement of the ends of the leads can be initiated prior to the engagement of the leads by the roller, and further movement of the ends of the leads can take place during movement of the roller. The lead engaging means 22 which positions the end of the leads include arm means indicated generally at 130, the arm means including an upper and lower outwardly extending pair of arms 132, 134, respectively, each of the arms having means 133, 135, respectively, at the outer end of the arm which projects toward the other arm, means 133 being a portion of the outer end of arm 132 which is bent downwardly as can best be seen from FIGS. 3 and 4, and the means 135 being portions of the outer end of arm 134 which are bent upwardly. The lower arm 134 extends outwardly from a first arm mounting means 136 which mounts the arm for rotational movement about the axis of pivot pin 137 and is operable to move the arm between a lower inoperative position as shown in FIG. 2 and a raised operative position as shown in FIGS. 3 and 4. The first arm mounting means 136 is carried for longitudinal and rotational movement about a second arm mounting means which includes a hollow cylindrical shaft 138 and a mounting block 139 secured to the end of shaft 138. The first arm mounting means 136 is caused to be rotated about the pivot pin 137 by a shaft 140 mounted within the shaft 138. Thus, by rotating the shaft 140 about its axis relative to the shaft 138, the arm 134 can be moved between its raised and lowered positions. The means for rotating the shaft 140 are not shown and any conventional means may be suitably employed. It should be noted however that a cam (not shown) is mounted on the end of shaft 140 within the mounting block 139, the cam engaging a cam follower (not shown) on arm 134 to pivot the arm with respect to the mounting block 139. The shaft 138 is mounted in a manner not shown in the drawings for longitudinal and rotational movement about its axis as indicated by the arrows 142, 143, respectively. The shaft 138 is operable during longitudinal movement to move the arm means between a first position which is spaced adjacent the end 40 of the plurality of grooves between the end of the template and the holding means 18 and a second position spaced beyond the other end of the template as indicated in FIG. 4. By rotating the shaft 138 the upper arm may'also be moved between its raised inoperative position and its lower operative position. The arm 132 shown in the drawings is provided with only a single depending portion 133, however, it may be desirable to provide the arm with other depending portions. To the same effect it may be desirable to provide the lower arm with additional upwardly extending portions. To this end, a polyurethane member 144 is shown mounted on the lower arm, the member 144 defining a gap 146 with the members 132, 133, I34, I35 when the arms are in their closed position shown in FIGS. 3 and 4. The operation of the arm means will be more fully set forth below but it should be noted that as the arms move from their initial lead engaging position shown in FIG. 3 to the location spaced beyond the end of the template shown in FIG. 4 that the arms will be in constant sliding contact with the leads 34 and will comb the ends 46 of the leads first away from the end of the template adjacent the holding means 18 to a second location where the ends 46 are caused to be moved beyond the end 38 of the template to a final location wherein the ends of the leads are caused to be moved beyond the lead trimming means and the terminal applying means. The movement of the arm means will be timed with respect to the roller 112 and the lead trimming means to insure that the ends of the leads have been moved to their proper position at various portions of the operations of the roller I12 and the lead trimming means.

After the free end sections 34 of the leads have been properly combed and rolled into the grooves. subsequent work operations will be performed upon the ends of the leads. Different work operations may be performed upon the ends of the leads, such as for example trimming the ends of the leads. stripping insulation from the ends of the leads, applying terminals to the ends of the leads. and/or applying color identification to the ends of the leads.

In the apparatus shown in the drawings accompanying this application a lead trimming operation and a terminal applying operation are illustrated. In order to insure that the ends of the leads are properly trimmed it is essential that the ends be combed past the shearing or lead trimming means so that the end portions of the leads lie in the trimming area. The lead trimming means include an upper shear blade 150 and a lower shear blade 152. The upper shear blade 150 is mounted on a structure 154 which also carries a vertically movable centering device 156. The structure 154 and upper shear blade 150 are connected to an upper mounting block 158 which is in turn secured to a vertically movable slide 160 by a key 162. The slide 160 is mounted for vertical sliding movement within a slide housing 164 which is part of the press 14. The press 14 includes a rotatable cam assembly 165 (FIG. I) mounted above the upper end of the slide 160, a portion of the cam assembly 165 contacting the slide to force it downwardly against a spring 166 which is held in place by a spring retainer 168 mounted on the lower end of the slide housing 164. The spring 166 will normally hold the shear 150 and centering device 156 in their upper posi tions as shown in FIG. 6, with upward movement of the slide being limited by the upper surface 169 (FIG. 7) of the upper mounting block 158 moving into contact with the lower surface 170 of the housing 164.

As the press cam assembly initiates downward movement of the slide 160, the upper shear 150 and centering device 156 will move downwardly from the upper position shown in FIG. 6. The downward movement of the slide. however, will not be initiated until after the arms 132, 134 have passed the ends 46 of the free end lead sections 34. The cam assembly 165 will ultimately move the upper shear blade 150 past the lower shear blade 152 in the manner indicated in FIG. 8. In order to insure that the terminals end portion of the free end lead sections 34 are in their desired position. it is necessary that they be engaged by the centering device 156. The centering device 156 has lower V-shaped notches 171 and upper channel shaped portions 172. The terminal end portions of the leads will be initially engaged by the V-shaped notches I71 and. as the centering de vice 156 moves downwardly, the leads will move up into the channel portions 172. The channel portions 172 are disposed in line with the grooves 32 on the template 30 and insure that the leads will extend directly away from the template. It is possible that even though the leads have been combed past the shear. that after the comb arms 132, 134 have passed beyond the ends 46 of the leads that the leads may skew. If such skewing takes place then it is not possible to properly maintain the length of the leads between the end of the template and the shears. However, by using the centering device 156 it is possible to position the leads in their desired spatial relationship immediately prior to and during trimming operations of the leads to insure that the free end portions of the leads will be sheared to a predetermined length during the shearing of the free end portions of the leads. It should further be noted that as the centering device and upper shear move downwardly that the upper surface of the leads will not be engaged by the upper end portion 174 of the channels 172 until after the ends of the lead have been sheared as indicated in FIGS. 7 and 8.

Terminals 200 are applied to the remaining terminal end portions of the leads after the ends of the free end sections 34 have been trimmed. In order to apply the terminals it is first necessary to move the shearing structure to the right hand position shown in FIG. 9. and to then move the template downwardly to permit the terminal end portions of the lead to drop into the open barrel portion of the terminals. Subsequently the barrel portion of the terminals are crimped about the terminal end portions of the lead. In order to provide for movement of the shear 150, 152 to the right it should be noted that the slide housing 164 is mounted for transverse sliding movement. While the mounting structure which permits the slide housing to slide transversely is not shown in these drawings, it should be noted that the slide housing is caused to slide to the right against spring pressure by action of a cam and cam follower.

The cam and cam follower are best shown in FIG. 6 and include a cam track 180 and a cam follower in the form ofa roller 182. The cam track 180 is rigidly interconnected with a ram 184, the ram 184 being part of the press 14. The ram 184 is driven for vertical reciprocating movement by cam assembly in timed relationship with respect to the slide 160. The cam follower or roller 182 is journaled about a shaft 186 that is in turn carried by a pair of upwardly extending spaced apart members 188 that are secured to the upper mounting block 158. As the slide 160 is caused to be moved downwardly from its raised position shown in FIG. 6 the cam follower 182 will be maintained in engagement with a first vertically inclined surface 190 of the cam 180. Thus, as the slide moves downwardly the ram 184 will also move downwardly as can be appreciated from a comparison of FIGS. 6, 7, and 8. After the slide has moved downwardly through the completion of the shearing action as shown in FIG. 8 there will be no further downward movement of the slide 160, however the ram 184 will continue its downward movement. Further downward movement of the ram 184 will bring the vertically inclined surface 192 of the cam into engagement with the cam follower 182, and as the cam 180 moves downwardly with respect to the slide housing 164 the interengagement of the vertically inclined surface 192 with the cam follower 182 will cause the slide housing 164 to shift to the right (as viewed in FIG. 6) against spring pressure. The spring which biases the slide housing 164 to the left is not shown. However, it should be noted that the slide housing 164 is constantly biased to the left to maintain contact between the cam follower 182 and the cam 180. After the lead trimming means of shearing mechanism 150, 152 has been shifted a sufficient amount to the right the cam follower 182 will then engage the second vertical surface 194 and further downward movement of the ram will not cause further shifting of the slide housing 154. After the ram 184 has completed its downward stroke and is then moved upwardly to return it to the position shown in FIG. 6 the slide housing will move to the left as the cam follower or roller 182 again engages the vertically inclined surface 192 due to the action of the spring means which biases the housing to the left.

As the ram 184 continues its downward movement after the lead trimming means have been shifted to the right it will cause terminals, indicated generally at 200, to be crimped about the terminal end portion of the leads by the interaction of a crimper 202 and anvils 204. However, before the terminals are crimped about the terminal end portions of the free end lead sections 34 it is necessary to move the template 30 from its raised position shown in FIG. 8 to its lower position shown in FIG. 9. This is accomplished through the interaction of the wire clamp plate 206 with the template 30, the plate 206 having been shifted to its upper stop position shown in FIG. 9 prior to moving the template 30 downwardly. In this connection it should be noted that the plate 206 is mounted for vertical sliding movement between a pair of spaced apart side rails 208 (FIG. 1), the plate normally being biased to its lower position shown in FIG. 6 due to the action of a spring 210. The spring 210 is disposed about a rod 212, the lower end of the spring being received within a lower seat 214, and the upper end of the spring 210 being received by an upper seat 216. The lower seat 214 is formed in an upper portion 218 of the plate 206, and the lower end of the rod extends through the seat 214 and is secured to the upper portion 218. The upper seat 216 is formed in a member 220 which is rigidly interconnected with the crimper 202 and ram 184. The member 220 is provided with a bore through which the rod 212 may slide. It should be noted at this point that the force of the spring 210 is relatively small and is insufficient to move the template downwardly. Thus, as the ram 184 moves downwardly, the lower edge 222 of the plate 206 will be brought into contact with the leads at the end 38 of the template, and continued downward movement of the ram 184 will cause the plate to be maintained in contact with the end of the leads by spring pressure of the spring 210 as the spring is being compressed until the upper surface 224 of the upper portion 218 contacts the lower surface 226 of the member 220. Further continued downward movement of the ram after this contact has been made will cause the plate 206 to force the template downwardly. It should be noted that the lower surface or edge 222 of the plate 206 serves a dual purpose in that, in addition to moving the template 30 downwardly after the surfaces 224 and 226 have come into contact with each other, it also serves to hold the leads in their desired position at the end of the template.

As has been brought out above, the template 30 is mounted for vertical movement, and to this end the template is mounted on a template mounting block 230, the template mounting block being apertured as at 232. The upper end of a slide 234 is secured within the aperture 232. The slide 234 is in turn mounted within a slide housing 236. As illustrated somewhat schematically in FIG. 1, the lower end of the slide 234 is interconnected with a lever arm 238, the other end of the lever arm being pivotally mounted on a portion 240 of the bench. A second lower lever arm 242 is mounted parallel to the first arm 238, one end of the lower lever being pivotally mounted on the lower end of portion 240. The other end of the lower lever is interconnected with the lever arm 238 by a link 244, one end of the link 244 being pivotally secured to the outer end of the lever 242, and the other end of the link 244 passing through an elongated aperture 246 in the upper lever 238. A stop 248 is mounted on the upper end of link 244 and is normally held in contact with the upper surface of the lever 238 by the action of a compression spring 250. The levers 238, 242, and link 244 form a four bar linkage, however, it should be noted that the upper lever 238 may move towards the lower lever 242 if the spring 250 is compressed. A cam 252 mounted on rotatable shaft 254 is used to control the position of the four bar linkage, and when the dwell portion of the cam is in contact with the lower lever 242 (as indicated in FIG. 1), the four bar linkage will be in its lower position and the template 30 will be held in its lower position illustrated in FIG. 2. By rotation of the cam 252 and shaft 254 the four bar linkage may be moved to its upper position and the template 30 is then disposed in its upper position unless the spring 250 is compressed. The four bar linkage is maintained in its upper position by the cam 252 during the combing and rolling of the leads and also as the ram 184 moves downwardly. However, the cam maintains the four bar linkage in its lower position when the leads are to be stripped from the grooves after the terminals 200 have been applied to the terminal end portion of the leads, and also during the loading of another multi-lead cable in the holding means 18. As the spring force in spring 210 is less than the spring force in spring 250, the spring 210 will be fully compressed before the spring 250 is initially compressed, the spring 250 being compressed by the ram 184 as the template is moved downwardly from the position shown in FIG. 8 to the position shown in FIG. 9.

As the ram 184 completes its downward stroke, terminals 200 will be crimped about the terminal end portions of the leads 34. The terminals 200 are supplied to the apparatus in these drawings in strip form and are conveyed to the terminal applying area by a terminal conveyor indicated generally at 16. As the details of the terminal conveyor are well known in the art they will not be described here except to the extent that an arm 262 FIG. 1)) is reciprocated back and forth within an elongated aperture 264, the stroke of the arm 262 being such that terminals equal in number to the grooves in the template may be supplied to the terminal applying zone of the apparatus. Each of the terminals has a barrel portion which includes upwardly extending side walls 266. As the terminals 200 are conveyed into the terminal applying zone of the apparatus the barrel portion of the terminals are supported by the anvils 204, and another portion 268 of the terminals is supported by the terminal strip guide 270. As the ram 184 is completing its downward stroke, and as the template is being moved downwardly, the terminal end portions of the leads 34 will be laid between the spaced apart sidewalls 266 of the barrel portion. Further continued movement of the ram downwardly will, through an interaction of the crimper 202 and anvils 204, cause the side walls of the barrel portion to be crimped about the ends of the leads. As the structure of the crimper and anvils are well known to the art they will not be described here. After the terminals have been secured to the ends of the leads 34, the multi-lead cable 43 and the free end lead sections are removed or stripped from the machine and the cycle is then repeated.

OPERATION The apparatus shown in the accompanying drawings is utilized to position, trim and apply terminals to the ends of a plurality of leads which have free end lead sections extending outwardly from the end 42 of a multi-lead cable. At the start of the operation the various elements of the apparatus are disposed in an initial position as illustrated in FIG. I. The end 42 of the cable is then placed in the channel shaped portion 58 of the pivoted member 50 with the edge 47 of the insulation contacting the plate 90 which serves as a guide. The handle 56 is then swung from its open position shown in FIGS. 1 and to its holding position shown in FIG. I1. At this point the template 30 is in its lower position due to the action of the cam which engages the end of lever 238 to permit the finished assembly to be removed from the machine. However, the template could be in its raised position during the loading of the cable within the holding means 18. It should be noted at this point that as the multi-lead cable is moved into the holding means 18 from the left side of the template (as viewed in FIG. 1) the ends 46 of the leads 34 may extend to the left of the template as shown in FIG. 2. In fact the ends may actually be bent around and extend to a location beyond the end of the template 30 adjacent the plate 90. It should also be noted at this point that if the roller 112 were to initially contact the leads after the template had been raised without further positionin g of the leads that it might not be possible to satisfactorily roll the leads into the grooves as the ends of the leads might be restrained from movement towards the end 38 of the template by the roller 112. Thus, after the template has been moved to its raised position shown in FIG. 3 it is necessary to engage the leads and comb them away from the portion of the leads which are being held by the holding means 18. To this end a plurality of arms are brought into contact with the portions of the leads between the template 30 and the holding means 18, and then the arms 132, 134 are moved away from the holding means over the template while maintaining sliding engagement with the leads to cause the ends of the leads to move away from the area initially contacted by the roller I12. With extremely flexible leads it is essential that this initial movement be greater than one half of the length of the leads between the ends of the leads and that portion of the leads which are initially contacted by the roller 112. However, with less flexible leads it may be that a smaller increment of movement may be possible. The roller 112 may be moved into contact with the leads before the completion ofthe combing action by the arms 132, 134 as indicated in FIG. 4, or the ends of the leads may be com pletely combed past the shearing means 150, 152 prior to the disposition of the leads into the grooves 32. If the rolling operation is to take place during the combing action it is essential that the ends of the leads always be combed ahead of the roller to prevent the roller from engaging the ends of the leads. Similarly. it is essential that the ends of the leads must be moved beyond the end of the template prior to the completion of the rolling action.

After the free end lead sections 34 have been combed and rolled to the position indicated in FIG. 6, the roller 112 is maintained in engagement with the leads adjacent the end 38 of the template and the arms 132, 134 are moved further to the right to a position where they can be swung to an inoperative position for subsequent movement back to the initial starting position shown in FIG. 2. At this point the cam assembly 165 is rotated to move the ram 184, the centering device 156, and plate 206 downwardly causing the terminal end portion of the leads to be centered and sheared and also causing the plate 206 to come into contact with the ends of the leads above the end of the template. As the ram continues its downward movement the shearing mechanism will be cammed to the right from the position shown in FIG. 8 to the position shown in FIG. 9, and the plate 206 will move upwardly relative to the crimper 202 until it is in its upper stop position. Further downward movement of the ram will then cause the template to be shifted from its raised position shown in dotted line in FIG. 9 to its lower position shown in full lines, the terminals 200 being crimped about the terminal end portion of the free end sections 34 when the crimper attains its lower position shown in FIG. 9. It should be noted that it is essential that the template be moved downwardly as it is not possible to trim the leads and apply the terminals in the same space as it is necessary to move the terminal end portion of the leads between the sidewalls 266 of the barrel portion of the terminal 200, and also since the combing and shearing action can not take place if the terminals 200 were in the crimping zone. Before the cam assembly causes the ram 184 to be moved upwardly the cam 252 will be rotated to its dwell position so that when the ram 184 moves upwardly the template will not move upwardly (as the stop 248 prevents upward movement of the arm 238, side 234, and the template mounting block 230) to permit the leads 34 and terminals 200 to be stripped from the machine. After the leads and terminals have been stripped from the machine the apparatus is returned to the position shown in FIG. 1 by moving the roller means to this position and also by moving the arms 132, 134 to this position. It should also be noted that when the leads and terminals are stripped from the machine it is necessary to return the pivoted member 50 from its holding position shown in FIG. 11 to its cable receiving position shown in FIG. 10. As the ram 184 is caused to move upwardly during this final stage of the operation the plate 206 and shearing means I50, 152 will also return to their original position which is shown in FIG. 6.

While a preferred structure in which the principles of the present invention have been incorporated is shown and described above, it is to be understood that this invention is not to be limited to the particular details shown and described above, but that, in fact, widely different means may be employed in the broader aspects of the invention.

What is claimed is:

l. A method of shearing the free end portions of a plurality of leads and of applying terminals to the terminal end portions which remain after the free end portions have been sheared, comprising the steps of:

positioning free end portions of a plurality of leads in first positions;

shearing the ends of the free end portions to leave terminal end portions;

supporting a plurality of terminals in second positions in alignment with said first positions, each of the plurality of terminals including spaced apart sidewalls;

moving either the spaced apart sidewalls or the terminal end portions toward the other to position the terminl end portions of the leads between the spaced apart sidewalls; and

crimping the spaced apart sidewalls about the terminal end portions to apply the terminals to the terminal end portions,

2. The method as set forth in claim 1 wherein the terminal end portions are moved toward the spaced apart sidewalls while the plurality of terminals are maintained in said second positions.

3. A method of shearing the free end portions of a plurality of leads and of applying terminals to the terminal end portions which remain after the free end portions have been sheared, comprising the steps of:

positioning free end portions of a plurality of leads in first positions.

shearing the ends of the free end portions to leave terminal end portions.

moving the terminal end portions of the plurality of leads to second positions, and

applying terminals to the terminal end portions of the plurality of leads. 4. The method set forth in claim 3 further characterized by the step of:

supporting terminals having upwardly extending spaced apart sidewalls below the free end portions of the plurality of leads, the terminal end portions of the plurality of leads being moved downwardly between said sidewalls before the terminals are applied to the terminal end portions. 5. A method of positioning a plurality of leads, shearing free end portions of the plurality of leads, and applying terminals to the terminal end portions of the leads which remain after shearing; said method comprising the steps of:

providing an apparatus including template means, shear means and terminal applying means, the template means having a plurality of grooves which extend to one end of the template means the shear means and the terminal applying means being disposed beyond said one end of the template means;

supporting the template means in a raised position;

disposing a plurality of leads into said plurality of grooves with free end portions of said leads extending beyond said one end of the template means and past the shear means;

shearing the ends of the free end portions after said free end portions have been disposed past the shear means to leave terminal end portions extending beyond said one end of the template means;

moving the template means to a lower position after the free end portions have been sheared; and applying terminals about the terminal end portions of the plurality of leads.

6. A method as set forth in claim 5 further characterized by the step of:

moving the shearing means away from said one end of the template means before the terminals are applied to the terminal end portions.

7. A method of positioning a plurality of leads having free end portions, shearing the free end portions of the leads, and applying terminals to the terminal end portions of the plurality of leads which remain after shearing; comprising the steps of:

providing an apparatus including template means, shear means, and terminal applying means, the template means having a plurality of grooves which extend to one end of the template means, the shear means being disposed beyond said one end of the template means, and the terminal applying means also being disposed beyond said one end of the template means and including fixed anvil means and movable crimper means; supporting the template means in a raised position; positioning portions of the plurality of leads into said plurality of grooves with free end portions of said plurality of leads extending beyond said one end of the template means and past the shear means;

shearing the ends of the free end portions after said free end portions have been positioned past the shear means to leave terminal end portions of said plurality of leads extending beyond said one end of the template means; moving the crimper means downwardly towards said anvil means and concurrently moving the template means downwardly to a lowered position after the free end portions have been sheared; and

crimping terminals about the terminal end portions of the leads as the template means attains its lowered position.

8. An apparatus for shearing the free end portions of a plurality of leads and for applying terminals to the terminal end portion which remain after the free end portions have been sheared, said apparatus comprising,

means to position the free end portions of a plurality of leads in first positions;

means for shearing the free end portions to leave terminal end portions of the plurality of leads; means for supporting a plurality of terminals in second positions remote from said first positions, said second positions being in alignment with said first positions, and each of the plurality of terminals including spaced apart sidewalls;

means for moving one of the spaced apart sidewalls and the terminals end portions toward the other to position the terminal end portions of the leads between the spaced apart sidewalls; and

means for crimping the spaced apart sidewalls about the terminal end portions to apply the terminals to the leads.

9. The apparatus as set forth in claim 8 wherein the means for moving one of the spaced apart sidewalls and terminal end portions toward each other includes means operable to move the terminal end portions of the plurality of leads from their first position toward the second positions.

10. An apparatus for shearing the free end portions of a plurality of leads and for applying terminals to the terminal end portions which remain after the free end portions have been sheared, said apparatus comprising:

means for positioning the free end portions of a plurality of leads in first positions.

means for shearing the ends of the free end portions to leave terminal end portions of the plurality of leads.

means for moving the terminal end portions of the plurality of leads to second positions. and

means for applying terminals to the terminal end portions of the plurality of leads.

11. The apparatus set forth in claim 10 in which said means for applying terminals include fixed anvil means and movable crimper means, the fixed anvil means supporting in part terminals below the free end portions of the plurality ofleads, the terminals having upwardly extending spaced apart sidewalls, the crimper means being operable to crimp the sidewalls about the terminal end portions as it contemplates its movement toward the anvil means. the means for moving the terminal end portions of the plurality of leads to the second positions bringing the terminal end portions downwardly between said spaced apart sidewalls before said crimper means causes the spaced apart sidewalls to be crimped about the terminal end portions of the leads.

l2. An apparatus for simultaneously applying terminals or the like to a plurality of leads. said apparatus including:

template means having a plurality of grooves extending to one end of the template means and each groove being capable of receiving only a single lead;

positioning means operable to position portions of a plurality of leads into said grooves with free end portions of said plurality of leads extending beyond said one end of the template means,

shearing means operable to shear the ends of said free end portions, and

applicator means operable to apply terminals to the terminals end portions of said leads which remain after shearing, said applicator means including movable crimper means and fixed anvil means; the combination therewith of support means operable to support said template means in either a raised or lowered position, the template means being supported in its raised position during the operation of the positioning and shearing means, and supported in a lowered position during the completion of the operation of the applicator means.

13. The apparatus as set forth in claim 12 in which said support means includes spring means which normally holds said template means in its raised position, said spring means being compressed as the template moves downwardly towards its lowered position.

14. The apparatus as set forth in claim 12 in which said support means includes slide means interconnected with said template means and movable therewith; pivoted lever means interconnected at one end portion to said slide means. said one end portion being movable between raised and lowered positions,

cam means operably interconnected to said lever means to move said one end portion of the lever means between said raised and lowered position, and

spring means operable interconnected with said lever means and cooperable with said cam means to hold said one end of the lever means in said raised position, said spring means being compressed as the template means moves from its raised position to its lowered position.

15. An apparatus for positioning a plurality of leads having free end lead sections. for shearing free end portions of the free end lead sections, and for applying terminals to the terminal end portion of the leads which remain after shearing, said apparatus comprising;

template means having a plurality of grooves which extend to one end of the template means; means for supporting the template means in either a raised or lowered positions, said supporting means including spring biasing means which normally holds the template means in the raised position,

means operable to position a portion of the free end lead sections of the plurality of leads into said plurality of grooves with free end portions of said plurality of leads extending beyond said one end of the template means;

shearing and terminal applying means disposed adjacent said one end of the template means, the free end portions of said leads extending past the shearing means, said shearing means being operable to shear said free end portions to leave terminal end portions extending beyond said one end of the template means;

said terminal applying means including movable crimper means and fixed anvil means. said movable crimper means being movable downwardly to crimp terminals about the terminal end portions of the leads, and said crimper means carrying means engagable with one end of the template means to cause said template means to move downwardly against said spring biasing means as the crimper means is being moved downwardly.

16. The apparatus as set forth in claim 15 in which said means engagable with one end of the template means is a wire clamp plate interconnected with said crimper means and movable between a lower wire clamping position and a raised template moving position as said crimper means moves downwardly. said wire clamp plate when in its raised template moving position causing the template means to move downwardly against said spring biasing means during completing of the downward movement of said crimper means.

17. The apparatus as set forth in claim 16 in which said shearing means is mounted for movement between a first position adjacent said one end of said template means and a second position spaced away from said one end of the template means, the shearing means being disposed in said first position during the shearing of the ends of said free end portions, and the template being moved towards its second position as said crimper means moves downwardly.

18. The apparatus as set forth in claim 17 in which said crimper means carries a cam track, and said shearing means includes a cam follower engagable with said cam track, downward movement of said crimper means causing said shearing means to be moved from its first position to its second position.

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Classifications
U.S. Classification29/863, 29/753, 29/56.5
International ClassificationH01R43/052, H01R43/04
Cooperative ClassificationH01R43/052
European ClassificationH01R43/052