US 3215014 A
Description (OCR text may contain errors)
Nov. 2, 1965 A. MALAMOOD ETAL 3,215,014
FEEDING APPARATUS FOR LIFTS OF LIMP SHEETS Filed Oct. 16, 1962 4 Sheets-Sheet 1 Fig. 1.
JNVENTOR. ABRAHAM MALAMOOD BY HERMAN MALAMOOD PW 722mm ATTORNEYS 4 Sheets-Sheet 2 A. MALAMOOD ETAL FEEDING APPARATUS FOR LIFTS OF LIMP SHEETS Nov. 2, 1965 Filed Oct. 16, 1962 BY HERMAN MALAMOOD PW FW ATTORNEYS Nov. 2, 1965 A. MALAMOOD ETAL 3,215,014
FEEDING APPARATUS FOR LIFTS 0F LIMP SHEETS Filed Oct. 16, 1962 4 Sheets-Sheet 3 Fzyi - Mg INVENTOR.
ABRAHAM MALAMOOD BY HERMAN MALAMOOD ATTORNEYS 1965 A. MALAMOOD ETAL 3,215,014
FEEDING APPARATUS FOR LIFTS 0F LIMP SHEETS Filed Oct. 16, 1962 4 Sheets-Sheet 4 INVENTOR. ABRAHAM MALAMOOD BY HERMAN MALAMOOD ATTORN E YS United States Patent 3,215,014 FEEDING APPARATU FOR LIFTS 0F LIMP SHEETS Abraham Malamood, 2245 Prospect Ave., Bronx, N.Y.,
and Herman Malamood, 6336 Grand Central Parkway,
Forest Hills, N.Y.
Filed Oct. 16, 1962, Ser. No. 230,929 6 Claims. (Cl. 83155) This invention relates to apparatus for feeding lifts of paper sheets to an automatic paper treatment machine, in registration, for the performance of a punching, tabbing, indexing, perforating, round cornering, drilling or like register operation.
The lifts may consist of any desired number of sheets, depending on the capacity of the automatic machine and the sheets are usually relatively flimsy, limp and flexible so that the lift cannot be handled by ordinary feed apparatus. In addition, despite the thin, limp nature of the sheets in the lift, it is essential that the edges of the sheets in the lift be flush and in exact registration with each other at the time the registered treatment operation takes place.
It has heretofore been proposed, as in US. Patent No. 2,641,321 to Cruzan of June 9, 1953, to advance successive lifts between continuously travelling tapes across the bed of a treatment machine, to intercept each lift at the bed by a movable end stop for registering the leading edge, and to then push the lift laterally toward the back gauge of the machine for registering the side edges of the lift. Among the disadvantages of such a feed and registration apparatus are the fact that the impact of each lift against the end stop may tend to mark or crumple the leading edges of the sheets, the tapes are frictionally urging the upper and lower sheets forwardly during the treatment operation and the lateral movement of each lift is accomplished against the frictional resistance of the tapes and against the frictional resistance of the end stop.
In many binding operations, some paper sheets are shorter than the other sheets, but must still be treated in registration with the back gauge of the treatment machine. In a paricular lift, if the short sheets are spaced from the back gauge edge of the lift but flush with the opposite edge of the lift, a lateral push on the said opposite edge toward the back gauge will have no effect in aligning the important back gauge edges for punching or other treatment. Thus the machines of the prior art do not properly orient short sheets for treatment.
Similarly many sheets used in binding operations are of the coated enamel type with glossy, slippery surfaces. Friction tapes tend to slip on such surfaces and to result in an inaccurate registration of forward and trailing edges when operable with an end stop. In the apparatus of this invention short sheets are oriented laterally by gravity and oriented longitudinally first by a push on the trailing edge and then by a push on the forward edge, whereby short sheets and slippery sheets are under control and accurately registered.
The principal object of this invention is to accomplish the registration of the side edges of each such lift while the lift is advancing toward the treatment station, and by gravity, so that there is no undue impact or frictional resistance and so that the lift is in longitudinal, or side, registration with the back gauge upon arrival at the treatment station.
Another object of the invention is to accomplish the registration of the leading and trailing edges of each such lift Fby halting the trailing edges exactly in registration on the bed of the machine, without impact, and then jogging the leading edges of the individual sheets in the lift rearwardly toward the register line established by the trailing edges.
Patented Nov. 2, 1965 "ice A further object of the invention is to provide an intermittent, register chain, feed for an automatic punching machine which includes a positive stop mechanism for halting the register chain lugs exactly at the treatment station and flexible pressure members for holding each lift in contact with its lugs during the deceleration of the register chain to prevent over run.
Still another object of the invention is to provide an automatic feed for a punching machine in which each successive lift of limp sheets is registered laterally and longitudinally without undue impact and is punched, or otherwise treated, at a time when it is not engaged by any moving parts of the machine.
Other objects and advantages of the invention will be apparent from the claims, the description of the drawings and from the drawings in which:
FIG. 1 is a rear elevation of a machine constructed in accordance with the invention;
FIG. 2 is a plan view, normal to the bed, or table surface, of the machine shown in FIG. 1;
FIG. 3 is a front elevation in section on line 33 of FIG. 2;
FIG. 4 is an end elevation, from one end of the machine;
FIG. 5 is an end elevation, partly in section, from the other end of the machine;
FIG. 6 is a detail view illustrating the positive stop and control circuit of the invention; and
FIG. 7 is an enlarged, fragmentary end elevation showing the leading edge jogger of the invention.
In the drawings, 20 designates a conventional automatic punching machine well known in the art and having a bed, or table, 21 for supporting a lift 22 of limp sheets and having an upstanding side edge gauge 23 for registering the adjacent edges of the lift as it is punched by the unit 24. The drive mechanism 25 of the machine 20 is well known, and not described in detail, but in this invention it includes a punch tripping solenoid 26. Energization of solenoid 26 causes the multiple punching unit 24 to descend toward the bed 21 to punch a lift and then to return to its normal position.
Each lift 22 may consist of one or two dozen sheets, such as 27, of relatively flexible, limp, thin paper of the note book type, both the sheets and the lifts lacking sufiicient rigidity to be handled in the manner of paperboard or the like. When in register on the'bed 21 the opposite edges of the lift, parallel to the side edge gauge 23, are termed side, or longitudinal, edges 28 and 29 while the other pair of opposite edges of the lift are termed leading and trailing edges, or lateral edges 31 and 32.
Conventionally, the plane of the bed 21 is horizontaland the path of the multiple punch unit 24 is vertical. However, in this invention, frame means 33 is provided for tilting the automatic punching machine 20 at an angle so that a lift of sheets on the bed 21 will tend to slide by gravity downwardly into contact with the side edge gauge 23.
The frame means 33 also includes a frame structure 34 and 35 for supporting a bed extension 36 in advance of the bed 21 and a bed extension 37 in rear of the bed 21. The bed extensions 36 and 37 are coplanar with bed 21 and jointly form a longitudinally extending path which includes a lift deposit station 38, the treatment station formed by the bed 21, and a lift discharge station 39. The longitudinally extending path, or paper line P of the apparatus 41 of this invention is thus in a plane tilted on a longitudinal axis downwardly toward the side edge gauge 23 with the lower extremity and the higher extremity at uniform, but different, heights above floor level.
The apparatus 41 includes conveyor means 42 which includes an endless conveyor 43 having a working stretch extending along the tilted paper line P from station 38,
across bed 21 to station 39. Preferably the conveyor 43 is in the form of a pair of parallel, endless chains, 45 and 46, each chain such as 45, being trained around a sprocket 48 on shaft 49 journalled in bearings 51 and 52 at one end of the paper line P, and trained around a sprocket 53 on shaft 54 journalled in bearings 55 and 56 at the other end of the paper line P. Suitable tension sprockets such as 57 are provided for the non working stretches of the chains and the working stretches 58 and 59 are contained in longitudinal slots 61 and 62 formed by a plurality of longitudinal bars such as 63.
Each bar 63 is transversely adjustable by means of the set screws 64 which are slidable in the slotted transverse plates 65 and each sprocket 48, 49 and 53 is transversely adjustable on its keyed shaft by a set screw 66 so that the chains are movable laterally to conform to various widths of lifts. The upper faces 67 of the longitudinally extending, laterally spaced bars 63 are smooth for supporting each individual and successive lift with a minimum of friction as the lifts are individually and successively advanced along the paper line P.
The lateral edge registration means 68 of the invention includes a plurality of registration lugs, or dogs, such as 69 and 70 spaced around the chains 45 and 46, and arranged to project well above the plane of the smooth faces 67 of the bars 63 when the lugs are advancing, unidirectionally, along the paper line P. Each pair of lugs 69 and 70 is laterally, or transversely, aligned in a straight line normal to the side edge gauge 23, when at the treatment station formed by the bed 21 and each pair of lugs is arranged to engage the trailing lateral edge 32 of one of the lifts manually, or automatically deposited on the conveyor 43 at the lift deposit station 38. The leading face 72, of each lug 69 or 70 is smooth and relatively broad to avoid marking the trailing edges of the sheets in the lift while permitting the lift to slide sidewise and downwardly toward the side edge gauge 23, as it advances along the paper line P.
The lateral, or transverse, edge registration means 68 also includes intermittent, or indexing, drive means 73 for advancing the working stretch of the registration chains unidirectionally along the paper line P and halting the chains temporarily with each successive pair of lugs exactly aligned at the bed 21 to position the lift for the treatment operation. A sprocket 74 carried by the shaft 54 is driven by a chain 75 and sprocket 76, the sprocket 76 being carried on shaft 77, the shaft 77 being driven by the ratchet gear 78, pawl 79 and gear rack rod 81. Gear rack rod 81 is reciprocated by pivotal connection at its lower end to the crank arm 82 rotated by the shaft 83 of reducer 84. Reducer 84 is driven by the power train 85, jack shaft 86, power train 87 and electric motor 88.
The gear rack rod 81 and unidirectional, ratchet and pawl mechanism 78 and 79 are arranged to advance the conveyor 43 in indentical increments of travel between stations with halts at each station. Preferably, to assure exact registration of the lugs, and the trailing edges of each lift, at the bed 21 positive stop mechanism 91 is provided. Mechanism 91 includes the stop arm cam 92 on reducer shaft 83, the cam follower arm 93, pivoted at 94 to the frame, the follower arm spring 95 and the lug 96 fixed on the shaft 77 which carries the ratchet and pawl drive of the conveyor. Thus the upper end 97 of follower arm 93 is normally held out of the path of the lug 96, by the cam 92 to permit the lug 96 and its shaft to rotate while the chains advance. When the gear rack rod 81 has reached the end of its power stroke, the cam 92 permits the spring 95 to move the end 97 into the path of lug 96 to positively bar further rotation ofthe conveyor shafts and sprockets and to assure the halting of each successive pair of lugs at the correct lateralregistration line, relative to the bed 21.
The longitudinal edge registration means 100 of the invention includes the frame means 33 for tilting the paper line P downwardly toward the side edge gauge 23 and also includes an extension 101 of the side edge gauge 23 in advance of the bed 21 and preferably extending longitudinally from the lift deposit station 38 to the bed 21. The side edge gauges 23 and 101 form an upstanding guide normal to the plane of the tilted path of the lifts for contacting and aligning the adjacent edges of the sheets in each lift as the lift is advanced along the paper line P by the conveyor 43. Preferably an upstanding, longitudinally extending deflector 102 is mounted for lateral adjustment on the opposite side of the paper line P from the side edge gauges 23 and 101, the deflector 102 being angled toward the gauges and engaging the adjacent, or upper, edges of the sheets in each lift to urge them into registration in advance of the bed 21. Thus each successive individual lift on the conveyor 43 will be advanced to the bed 21, and halted at the bed 21 with the longitudinally extending edges flush and firmly against the side edge gauge 23, with no lateral movement necessary at the treatment station.
At least one, and preferably several, flexible resilient strips of thin metal, or the like, such as 103 or 104 are provided above, and in advance of bed 21 to retard the advance of each successive lift and prevent overrunning of the lift relative to the registration lugs.
One end of each strip such as 103 is fixed to the side edge gauge extension 101 above the paper line P at 105, the strip extending downwardly to a free terminal tip 106 in the path of the advancing lifts but being readily flexed upwardly by a lift to ride on the upper sheet and exert a holddown and braking effect on the lift. The strips 103 and 104 have been found to operate especially well when bent rearwardly as at 107 and then downwardly and forwardly as at 108, the resulting flexibility avoiding any marks on the sheets.
Preferably the apparatus 41 includes a leading edge jogger 111, normally below the path of the lifts 22 on paper line P and in rear of the bed 21. Means 112 is provided for pivoting the jogger 111 upwardly and reanwardly to above the level of the paper line and into engagement with the leading, lateral edges 31 of each lift 22 which has halted at the bed 21. In the event of overrun of the lift, when the stop mechanism 91 positively stops the lugs of the conveyor 43, or in the event that one or more sheets in the lift are not flush with the remaining sheets in the lift, the jogger re-orients the sheets and the lift relative to the lugs, as a back gauge, so that the lift is perfectly aligned both laterally and longitudinally on the bed 21.
The leading edge jogger, or pusher, 111 is a metal rod of quadrangular cross section having a lift engaging tip 113 and slidable in a bracket 114, the bracket being pivoted at 115 to a carriage 116 slidable longitudinally on tracks 117. The jogger 111 includes a stud 118 projecting through a slot 119 in bracket 114, and recessed in the bifurcated end 120 of a bell crank lever 121. Lever 121 is pivoted to the frame at 122 and includes a roller follower 123 riding on the cross head 124. Thus as cross head 124 is raised, the jogger 111 slides upwardly and rearwardly while the bracket pivots on the movable carriage.
The cross head 124, is synchronized with the speed of the conveyor 43, and with the stop mechanism 91, by means of the cross head pusher rod 125 which carries a roller follower 126 at its lower end actuated by the cam 127 mounted on the jack shaft 128. Shaft 128, in turn, is connected by the power train 129 to the shaft 83 of the reducer 84.
Jack shaft 128 by means of the bevel gears 131 and 132, drives the longitudinally extending shaft 134 which extends to the lift deposit station for driving an automatic lift segregation mechanism forming no part of this invention and, therefore, not described herein.
An electric control circuit 135 is preferably provided which includes a source of current 136, a limit switch 137 actuated by a cam 138 on the shaft 83, a stock sensing limit switch 139 having a switch arm 141 arranged to close the circuit when a lift is in treatment position on bed 21 and the punch tripping solenoid 26. The control circuit 135 is thus closed to energize the solenoid 26 only when switch 139 is closed by the presence of a lift on the bed 21 and only when the switch 137 is closed by the cam 138 to indicate that the positive stop mechanism 91 has assured the exact positioning of the registration lugs at the bed 21.
The solenoid 26 actuates the punching machine in the conventional manner to cause the multiple punching unit 24 to punch the lift 22 on the bed, in exact registration and the continued rotation of reducer shaft 83, then causes cam 138 to open switch 137, release the positive stop mechanism and move the gear rack rod 81 through another cycle to advance the next pair of registration lugs up to the bed, or treatment station, 21.
A hopper 142 is provided at the lift discharge station 39 which is not only tilted on a longitudinal axis, but also on a lateral axis so that each lift advanced across the bed 21 drops into the hopper with its leading edges bearing against the end wall 143 and its lateral edges bearing against the side wall 144 and thereby forming a stack in which all sheets and lifts have flush, aligned edges. A friction roll 146 is journalled in the frame structure 35, at the lift discharge station 39 for advancing each individual and successive lift from the conveyor 43 into the hopper 142. Roll 146 is driven by the shaft 54, through a power train 147. A holddown roll 148 carried on an arm 149 pivoted at 151 to a roll bracket assembly 152 is also provided, the roll 148 being freely revolvable.
1. In combination with an automatic machine having a bed for the performance of a registered operation on successive lifts of paper sheets, feed and registration apparatus comprising frame means including oppositely disposed extensions to said bed, said means supporting said machine with the bed thereof and with said bed extensions, forming a tilted longitudinal path for said lifts inclined from the horizontal toward one side of said path and extending from a lift deposit station, through a lift treatment station to a lift discharge station;
an upstanding side edge gauge normal to said tilted bed and bed extensions along said one side of said path to accurately register the adjacent side edges of said lifts on said bed;
a pair of parallel endless, chains supported on said frame, each having a working stretch extending along said tilted longitudinal path continuously from said deposit station through said treatment station to said discharge station and having transversely aligned registration lugs spaced therealong in successive, laterally spaced pairs, each pair transversely aligned normal to said gauge and advancing said lifts by engagement with the transverse trailing edge of successive lifts;
intermittent drive means indexing said chains unidirectionally, said means temporarily fixing successive transversely aligned pairs of lugs of said chains in exact position at said treatment station to register the transverse trailing edge of the lift engaged thereby normal to said gauge with said lift in exact position on said bed for said operation;
a leading edge jogger, mounted on said frame, in rear of said treatment station on said bed and out of said P and means, synchronized with said indexing means, for actuating said jogger to push the leading edges of the sheets in each successive lift, halted in registration at said treatment station, toward the lugs engaging the trailing edge thereof after said lugs have been temporarily fixed at said station and before said operation is accomplished.
2. Apparatus for feeding lifts of paper sheets to an automatic paper punching machine and for registering said lifts relative to the punches, side edge gauge and bed of said machine, said apparatus comprising frame means supporting said machine in tilted position for registering a lift on said bed against said side edge gauge by gravity;
a pair of laterally spaced, endless chains mounted on said frame means, said chains having parallel working stretches extending in a plane normal to said side edge gauge from a lift deposit station, across the punch bed of said machine to lift discharge station and having a plurality of pairs of lift advancing lugs spaced t-herearound, each pair defining a transverse line normal to said side edge gauge on said stretch for engaging the trailing edge of a lift;
intermittent drive means advancing said conveyor working stretches unidirectionally from said deposit station across said punch bed to said discharge station and periodically halting each successive pair of transversely alignedlugs on said bed with the trailing edge of the lift engaged thereby normal to said side gauge and the lift in exact registration with said punches;
positive stop mechanism associated with said intermittent drive means, for positively halting each successive pair of lugs in exact registration on said bed; and
electric control circuit means, including a switch closed by the actuation of said positive stop mechanism for actuating the punches of said machine during the periodic halts of said conveyor means.
3. Apparatus as specified in claim 2 plus leading edge jogger means operable on the leading edges of the sheets of each lift halted on said bed to jog the sheets in said lift into alignment against the pair of lugs engaging the trailing edge of said lift.
4. Apparatus as specified in claim 2 plus a longitudinally extending stationary side edge deflector mounted on said frame means in advance of said bed, said deflector being angled toward said side edge gauge to urge sheets in each said lift transversely of said conveyor means into engagement with said side edge gauge.
5. Apparatus for feeding lifts of paper sheets to the bed of an automatic paper treatment machine having a side edge guide, said apparatus comprising:
an endless conveyor including a pair of laterally spaced chains having parallel working stretches extending along a path through a lift deposit station, a treatment station on said bed and a lift discharge station;
lateral edge registration means associated with said working stretches, said means comprising:
a plurality of pairs of registration lugs spaced around said conveyor, each pair of lugs being laterally aligned normal to said path and to said side edge guide when on said bed at said treatment station to engage the trailing edge of a lift;
and intermittent drive means advancing said working stretches unidirectionally between stations and halting said working stretches temporarily with one pair of said lugs in predetermined position at said treatment station to register the trailing edge of the lift being advanced thereby;
a leading edge jogger pivoted to said machine below said path in rear of said treatment station;
means for pivoting said jogger upwardly above said path and rearwardly toward the pair of lugs halted at said station for engaging and aligning the leading edge of the lift halted at said station;
longitudinal edge registration means associated with said working stretches, said means comprising:
an upstanding side edge gauge extension extending 7 longitudinally along one side of said path, parallel to said working stretches from said lift deposit station to, and coplanar with, said side edge guide for engaging and guiding one side edge of the lifts being advanced by said lugs;
and a frame, associated with said conveyor, tilting the plane of said working stretches, and the plane of the bed of said machine, on a longitudinal axis downwardly toward said side edge guide to cause gravity to register the side edge of said lifts thereon, in advance of, and at, said treatment station.
6. Apparatus for feeding lifts of paper sheets to the bed of an automatic paper treatment machine having a side edge guide said apparatus comprising: a
an endless conveyor including a pair of laterally spaced, chains having parallel working stretches extending along a path through a lift deposit station, a treatment station on said bed and a lift discharge station;
lateral edge registration means associated with said conveyor, said means comprising:
a plurality of pairs of registration lugs spaced around said conveyor, each pair of lugs being laterally aligned normal to said path and to said side edge guide when on said bed at said treatment station to engage the trailing lateral edge of a lift;
and intermittent drive means advancing said working stretches undirectionally between stations and halting said working stretches temporarily with one pair of said lugs in predetermined position at said treatment station to register the lateral trailing edge of the lift being advanced thereby;
and longitudinal edge registration means, associated with said conveyor, said means comprising:
an upstanding side edge gauge extension extending longitudinally along one side of said path, parallel to said working stretches from said lift deposit station to, and coplanar with, said side edge guide for engaging and guiding one side edge of the lifts being advanced by said lugs;
a frame, associated with said conveyor, tilting the plane of said stretches, and the plane of the bed of said machine on a longitudinal axis downwardly toward said side edge gauge to cause gravity to register the longitudinal edge of said lifts thereon in advance of and at treatment station;
and an electric control circuit including a source of current, a switch closed by the presence of a lift at said treatment station, a switch closed by the halting of said conveyor and a solenoid actuating said automatic paper treatment machine;
whereby said solenoid is energized only when said conveyor is halted with a lift at said treatment station.
References Cited by the Examiner UNITED STATES PATENTS 1,174,965 3/16 Brown 198-135 X 1,706,366 3/29 Swift 83-423 X 2,010,567 8/ Schwamb et al 83-423 X 2,017,462 10/35 Kleineberg 83-268 X 2,022,877 12/35 Bettendorf 146-155 X 2,562,938 8/51 Moyer 83-268 X 2,722,276 11/55 Revelle 83-211 2,722,305 11/55 McCabe 198-23 X 2,731,086 1/56 Easton 83-268 2,732,014 1/56 Luther 83-345 X 2,839,023 6/58 Eger 83-221 X 2,893,731 7/59 Nordquist 271-48 X 3,013,458 12/61 Arvidson 83-221 X 0 ANDREW R. JUHASZ, Primary Examiner.
WILLIAM W. DYER, IR., Examiner.