US 2815531 A
Description (OCR text may contain errors)
Dec. 10, 1957 B. D. STEWART OPEN SIDE MULTIPLE ROLL CALENDEE 3 Sheets-SheeiI l Filed Nov. 30, 1955 INVENTOR. a//cf' 575.44496;- BY l! B. D. STEWART OPEN SIDE MULTIPLE ROLL CALENDER Dec. 10, 1957 5 Sheets-Sheet 2 Filed Nov. 30, 1955 Dec. 10, 1957 B. D. STEWART OPEN SIDE MULTIPLE ROLL CLENDERv 3 Sheets-Sheet 3 Filed Nov. 30, 1955 mw E m. mm
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arr@ Ms United States Patent Q OPEN SIDE MULTIPLE ROLL CALENDER Bruce D. Stewart, Denville, N. J., assignor to McKiernan- Terry Corporation, Harrison, N. J., a corporation of New Jersey Application November 30, 1955, Serial No. 550,150
3 Claims. (Cl. 18-2) The invention herein disclosed relates to calenders for operating on web materials.
Objects of the invention are to provide a calender of open side construction enabling ready removal,l replacement and changing -of the rolls and with variable drive and pressure means enabling use of the machine for such `different operations as rolling, friction, schreiner and embossing.
Other important objects of the invention are to provide such a machine in a rugged, economical and thoroughly practical form lof construction.
The foregoing and other desirable objects are attained by arranging the rolls, usually three, four or five, in a vertical stack in an open side frame with an intermediate, driven roll in fixed bearings and upper and lower rolls journaled in pivoted levers connected by pressure applying power cylinders, means being afforded for driving other of the rolls, when required, from the power driven roll irrespective of the pivotal mounting of such rolls, and means being provided for holding certain of the rolls separated when not in service.
Other novel features of the invention and desirable results attained are set forth and will appear in the course of the following specification.
v The drawings accompanying and forming part of the specification illustrate present commercial embodiments `of the invention, but structure may be modified and changed as regards such illustration, all within lthe true intent and scope of the invention as hereinafter defined and claimed.
Fig. 1 in the drawings is an end view of a four-roll machine showing all rolls engaged for rolling operations;
Fig. 2 is -a similar view showing gearing applied from the intermediate power driven roll for driving the top roll for friction service;
Fig. 3 is a like view showing the top and second rolls lifted and secured in that relation, leaving the intermediate and lower rolls in service for schreinering;
Fig. 4 is an end view showing the top and second rolls lifted and gears applied for driving the lower roll from the intermediate power driven roll for embossing operations;
Fig. 5 is a front perspective view of the four-roll machine set up for friction but differing from Fig. 2 by showing the motor drive at one end of the intermediate roll and the chain drive running from the opposite end of that roll to the top roll;
Fig. 6 is an end view of a five-roll machine with all rolls engaged as for rolling and pressing operations.
In the several views an open side frame is illustrated having upright pedestals 7 at the front of which the rolls are mounted in fully accessible relation where they may be readily removed, replaced and be changed as needed to accomplish the different operations for which the machine is intended.
The intermediate or center roll 8 is mounted in xed bearings 9 and the rolls above and below the same are Patented Dec. 10, 1957 mounted in arms or levers pivoted to carry such rolls toward or away from the intermediate roll.
The intermediate roll is power driven, Fig. 5 showing this as effected by way of chain drive 10 to one end of the roll from motor 11.
The top roll 12 and second roll 13 are shown journaled in lever arms 14, 15 pivoted in the front of the frame at 1o, 17, respectively.
The bottom roll 18, Figs. 1 to 5, is shown journaled in the ends of lever arms 19 pivoted in the frame on centers 20.
Power cylinders 21 pivotally linked to the extended ends of levers 14'and 19 at 22 and 23, provide the means for separating or applying pressure to the rolls, said cylinders containing pistons having extending piston rods 24 forming part of the necessary linkage.
The top roll 12 has -a lift connection with the second roll 13, the same being shown as adjustable links 25 pivoted at 26 to the forwardly extended ends of the upper roll carrying arms 14 and pivoted at their lower ends with lost motion at 27 to pins 28 on forwardly extended portions of the roll carrying arms 15. The slots 27 providing the 10st motion are arranged as shown in Figs. 1 and 2, to permit the top roll 12 to press downward on the second roll 13 while the latter is engaged with the intermediate driven roll 8 and, as shown in Figs. 3 and 4,
z to permit the top roll first to lift clear of the second roll and then to pick up the second roll and lift that clear of the intermediate roll.
Means for supporting the top roll clear of the second roll or for supporting both top and second rolls clear of the intermediate roll, is provided in the illustration in the form of links 29 pivotally suspended at 30 from the top levers 14 and carrying at their lower ends dogs or catches 31 pivoted at 32 so that they may be swung from an inactive position, Figs. 1 and 2, into projected position, Figs. 3 and 4, where they will engage the teeth of racks 33 fixed on the frame.
The holding dogs 31 in retracted position are clear of the racks 33, permitting free up and down operation of levers 14 and hence free action of the power cylinders for lifting or lowering the rolls. These dogs, however, when swung into the projecting position shown in Figs. 3 and 4, will engage racks 33 when lifting power is applied by the cylinders, thus to automatically catch and hold the rolls in uplifted relation, as shown in Figs. 3 and 4.
For ordinary rolling and other such pressing operations the intermediate, `8, may be the only driven roll, leaving upper and lower rolls contact driven as indicated in Fig. 1, pressure such as necessary being applied by power cylinders 21.
For frictioning and `such operations power may be taken off from the driven roll to positively drive the top roll, this being accomplished regardless of adjusted position of the top roll, by chain drive gearing as shown in Figs. 2 and 5, with one chain 34 running from sprocket 35 on one end of the intermediate roll shaft to an idler sprocket 36 turning on the pivot center 16 of the upper roll carrying lever 14, the latter sprocket carrying a companion sprocket 37 operating chain 38 running to a sprocket 39 on `the end of the upper roll shaft 40.
With such construction the upper roll will be operated from the power driven roll regardless of adjustments of the upper and second rolls 12, 13, and with pressure either on or off.
For4 schreinering and embossing the upper rolls may be lifted and secured .in raised position, as shownin Figs. 3 and 4.
For embossing and possibly other such operations the lower roll is geared in meshed relation to the intermediate power roll as by the gearing illustrated in Fig. 4, and comprising gears 41, 42 on the ends Aof the intermediate and lower roll shafts connected by idler gears 43, 44, with the latter journaled on the pivot center 20 of the lower roll carrying arms 19 so as to maintain continuous uniform drive of the lower roll regardless of pressure adjustments.
The basic combination disclosed enables the machine to be quickly adapted to various calendering services. The rolls,jsteel, engraved, filled and possibly other types, are exposed and accessible at the open face of the frame so as to be readily removable and inter-changeable and so as to enable easy threading of the material. The
. mounting of upper and lower rolls in pivoted lever arms under pressure control makes them more or less selfequalizing for establishing proper engagement and pressure relation, and these rolls may be mounted in selfaligning bearings so as to compensate for possible misalignment.
Figs. 1 to 5 show the invention operative as a two, three or four-roll machine.
Fig. 6 shows how the invention may be extended into a five-roll machine by extending the frame vertically to accommodate an additional roll 45 between the power driven roll 8 and lower, lever carried roll 18, this added, interposed roll being carried by journal bearing arms 46 pivoted in the front of the frame at 47.
In this construction the interposed roll 45 rides the lower roll 18 and is lifted by the latter into pressure engagement with the power driven, intermediate fixed bearing roll 8. This interposed roll 45 follows the action of the lower roll 18, being relieved from pressure engagement with the intermediate power driven roll when the bottom roll is lowered.
The cylinders 21 may be operated by hydraulic or pneumatic power and controls suitable for such operation will be provided.
The pawl and ratchet mechanism 31, 33 for catching and holding the movable rolls in pressure released position may be of suitable extent to take care of the different size rolls which may be used in the machine.
The ready adaptability enables the machine to be used on different web materials such as textiles, plastics, papers, leather, imitation leather, rubber, etc., and enables one machine to perform services heretofore requiring the use of several special machines.
The simple construction disclosed enables the machine to be produced at reasonably low cost.
What is claimed is:
1. Open side multiple roll calender, comprising an open front frame, an intermediate roll journalled in fixed bearings in said frame, levers pivoted in the frame above and below said intermediate roll, upper and lower rolls journalled in said levers in cooperative relation to said intermediate roll, power means connecting said levers for applying pressure of the upper and lower rolls on the intermediate roll and for relieving the intermediate roll of such pressure, power means for driving the intermediate roll, means for suporting the upper and lower rolls released from pressure relation with the intermediate power driving roll, a second roll mounted on pivoted lever arms between the top lever carried roll and the intermediate power driven roll and lost motion connection lifting links between the top roll carrying levers and the lever arms carrying said second roll.
2. Open side multiple roll calender, comprising an upright frame, horizontal rolls in vertically superposed aligned relation exposed at one side of said frame and including an intermediate roll in fixed frame bearings and upper and lower rolls movably `supported above and below said intermediate roll, horizontal levers fulcrumed intermediate their ends on said frame above and below said intermediate roll and projecting to opposite sides of said frame, said upper and lower rolls being journalled in the free ends of the levers at said one side of the frame, power means connected with the free ends of the levers at the opposite side of the frame for rocking said levers on their intermediate fulcrums for applying pressure of the upper and lower rolls to said intermediate roll and for relieving the intermediate roll of said pressure, means for driving the intermediate roll in its fixed bearings, drive connections extending between fixed centers from said intermediate roll to the fulcrum center of the levers carrying one of said movable rolls and between iixed centers from said fulcrum center to the roll journalled on said levers, whereby said movable roll will be driven the same in its various positions of adjustment and readily releasable means apart from said power means for securing the levers carrying said movable driven roll in position released from pressure relation with said intermediate roll, a second roll mounted on lever arms pivoted on the frame and interposed between the upper lever carried roll and the intermediate power driven roll and lost motion connection lifting links 4between the upper roll carrying levers and the lever arms carrying said second roll.
3. Open side multiple roll calender, comprising an upright frame, horizontal rolls in vertically superposed aligned relation exposed at one side of said frame and including an intermediate roll in fixed frame bearings and upper and lower rolls movably supported above and below said intermediate roll, horizontal levers fulcrumed intermediate their ends on said frame above and below said intermediate roll and projecting to opposite sides of said frame, said upper and lower rolls being journalled in the free ends of the levers at said one side of the frame, power means connected with the free ends of the levers at the opposite side of the frame for rocking said levers on their intermediate fulcrums for applying pressure of the upper 4and lower rolls to said intermediate roll and for relieving the intermediate roll of said pressure, means for driving the intermediate roll in its fixed bearings, drive connections extending between fixed centers from said intermediate roll to the fulcrum center of the levers carrying one of said movable rolls and between fixed centers from said fulcrum center to the roll journalled on said levers, whereby said movable roll will be driven the same in its various positions of adjustment and readily releasable means apart from said power means for securing the levers carrying said movable driven roll in position released from pressure relation with said intermediate roll and additional rolls mounted on lever arms pivoted on the frame and interposed between the upper roll and intermediate roll and between said lower roll and the intermediate roll respectively and lost motion link connections between certain of said roll carrying levers and pivoted lever arms.
References Cited in the file of this patent UNITED STATES PATENTS 174,047 Wilson Feb. 22, 1876 727,229 Turner May 5, 1903 748,593 Eck Jan. 5, 1904 2,300,522 Redshaw Nov. 3, 1942 2,495,990 Sockell Jan. 3l, 1950 2,571,239 Hart Oct. 16, 1951 2,686,413 Roublotf et al. Aug. 17, 1954 FOREIGN PATENTS 291 Germany July 24, 1877 843,687 Germany July l0, 19,52