US3093336A

US3093336A - Continuous turnover rewind

Info

Publication number: US3093336A
Application number: US853617A
Authority: US
Inventors: Joseph R Caulfield; Walter E Korth; Herbert E Neff
Original assignee: CHAMPLAIN CO Inc
Current assignee: CHAMPLAIN CO Inc
Priority date: 1959-11-17
Filing date: 1959-11-17
Publication date: 1963-06-11
Anticipated expiration: 1980-06-11

Description

June 11, 1963 J. R. cAuLFlELD s1-A1. 3,093,336

CONTINUOUS TURNOVER REWIND Filed Nov. 17, 1959 June 11, 1963 J. R. cAuLFlELD ETAL 3,093,335

CONTINUOUS TURNOVER REWIND 6 Sheets-Sheet 2 Filed NOV. 17, 1959 S w .w :il .H u? n AEN C0 A IKE RET M R H WE PTB F. I K ME lu H Y B QN N: \Nm

June 11, 1963 J. R. cAuLFlELD ETAL 3,093,335

CONTINUOUS TURNOVER REWIND Filed NOV. 17, 1959 6 Sheets-Sheet 3 IN VEN TORS JOSEPH fz. CAULHELD By WAL-rez E KOR H 255m E. N

ATTORNEYS June 11, 1963 J. R. CAULFIELD ETAL 3,093,336

CONTINUOUS TURNOVER REWIND 6 Sheets-Sheet 4 Filed Nov. 17, 1959 INQm D .W F m Rl rr OFHE TLTN NUR nuo K m. .E REW. ,RE DHIWB ELR SAE wWH V. B wy f l o @QN QN NQN 1N m3.; &5 ,v

6 Sheets-Sheet 5 @NN Q NNN f IIN J. R. CAULFIELD ETAL CONTINUOUS TURNOVER REWIND June 11, 1963 Filed Nov. 17, 1959 JONPzOU 301i INVENToRs.

JOSEPH E. cAumELo WALTER E. KORTH BY HERBERT E. NEFF ATTORNEYS 3,693,336 CNHNUGUS TURNVER REW/IND Ioseph It. Cauileld, Norwood, Walter E., Kurth, West Caidweil, and Herbert E. Neg, Short Hilis, NJ., as-

signors to Champlain Company, Inc., Roseland, NJ.,

a corporation of New York Fiied Nev. 17, 1959, Ser. No. 853,6?! 11 Claims. (Cl. 242-56) This invention relates to rewinding mechanism, and more particularly to a turnover rewind for a Web, especially a cardboard web.

In running a web of cardboard through a high-speed printing press a new roll of cardboard is prepared before the old one is used up, and a splice is made without stopping the machinery. Sometimes the reverse of this may be required at the discharge end of the printing press line, that is, the winding of the web into rolls, requiring the starting of a second roll on completion of a rst roll without stopping the press. For example, if the printing operation is to be followed by cutting or punching, the cutting punch may be slow compared to the printing press, and in such case it may pay to run the web at high speed through the press and to again roll up the web, in order to later use the rolls to feed the punch. In this way several punch presses may be used to take care of the output of a single printing press line, or a single punch press may be run for more hours or shifts than the printing press is run. It is no solution to go from a single input roll to a single output roll with no splicing at all, because this would require shutting down of the high speed printing press between rolls. Ins-tead, automatic splicing is provided at the input, and automatic rewind is provided at the output.

Gne primary object of the present invention is to provide a continuous turnover rewind which will be relatively simple and effective for the present purpose.

Another object is to provide such a rewind which is suited for handling a relatively stiff cardboard web which is wound into rolls of large size. In a typical case the web `may be, say 41/2 yfeet wide, and a roll may have a diameter of, say seven feet.

Still another object of the invention is to provide a continuous turnover rewind apparatus which may be used to wind the web either print-side-in or print-side-out. Still another lobject is to do this with hydraulic drive mechanism using stationary hydraulic motors for thel turnover rewind.

To accomplish the foregoing general objects and other more specific objects which will hereinafter appear, our invention resides in the turnover rewind elements and their relation one to another, as are hereinafter more particularly described in the following specification. The specification is accompanied by drawings in which:

FIGURE 1 is an elevation of a pull unit and turnover rewind mechanism embodying features of the invention;

FIGURE 2 is a plan view of the same, with the rolls and cones omitted;

FIGURE 3 is an elevation similar to FIGURE 1 but showing the apparatus modified to wind a web print-sidein instead of print-side-out;

FIGURE 4 is a schematic elevation explanatory of the gearing for driving the turnover shaft and the roll core spindles;

FIGURE 5 is a diagram of the compressed air circuit;

FIGURE 6 is a diagram of the hydraulic circuit;

FIGURE 7 shows the array of push buttons provided for controlling the mechanism; and

FIGURE 8 is a wiring diagram showing the electrical circuits.

asasst Patented June 11, 1963 Referring to the drawing, and more particularly to FIGURES 1 and 2, we there show a two-spindle turnover rewind for forming large rolls from a continuously supplied cardboard web. The rewind comprises a stand 12 carrying -a turnover shaft .14. This carries a spaced pair of relatively long arms 16 (FIG. 2) and 18. Roll core spindles Zd, 22, 24, and 26 are carried at the ends of the arms 16 and 1S. There is a first stationary motor 30 (FIG. 2) to index the turnover shaft 14. In this Case it is an electric motor with reduction gearing. A stationary hydraulic motor 32 serves to drive one of the roll core spindles, in this case spindle 2d. The drive means between the motor and spindle v2t) includes gearing 34 centered on the axis of the turnover shaft 14. Similarly, another stationary hydraulic motor 36 drives another roll core spindle, in this case the spindle 24, and the drive means includes gearing 38 centered on the axis of the turnover shaft 14.

The mechanism further includes a knife 40 disposed transversely of the web 42 for cutting the web when completing roll i4 (FIG. l) and starting another roll at core 4d. rihe latter is preliminarily wound with several pressure sensitive adhesive strips. There is also a touch roller Sti disposed transversely of the web 42, and movable supports `52 carrying both knife 40 and the touch roller Sti. A suitable actuator, in this case an air cylinder 54, acts to move the supports 52 toward the web and the core 46, in order to simultaneously cut the Web between the old and the new rolls, and to press the starting end of the web against the core 46.

The apparatus further comprises means described laterwhereby the motor driving the core of the new roll may be driven at or somewhat less than the linear speed of the continuously supplied web. With this precaution we nd it unnecessary to use curved belts, guide plates, etc., previously applied temporarily to the starting end of the web and then removed.

The apparatus in FIG. 1 is shown winding the web print-side-out, but the same apparatus is designed so that it may wind the web print-side-in when desired. For this purpose the

motors

32 and 36 which drive the core spindles are reversible motors. The turnover arms 16 and 18 carry web guide rollers 56 (FIG. 1) at the middle of the arms, on opposite sides of the turnover shaft 14. In addition, the position of the knife 40 and the actuator S4 may be reversed, as shown by the change from FIG- URE 1 to FIGURE 3. The supports 52 need not be changed, and are shaped to clear the cross shaft In FIGURE l the actuator 54 is at the left of the supports 52, and the web 42 is disposed over the core 46, so that the web is wound counterclockwise. The knife 40 and touch roller 5@ are located outside the web and move toward the printed side of the web.

In FIGURE 3 the web 42 is disposed beneath the core 46; the actuator 54 is located to the right of the supports 52; and the Ilatter are beneath the web so that when moved toward the web and the core, they move generally upward or outward, rather than downward or inward. The position of the knife 4t) on supports 52 has been reversed. The direction of rotation of the core is reversed, and the web is wound clockwise yinstead of counterclockwise. Again `assuming the upper side of the web toy have been printed, the knife moves toward the unpfrinted side of the web, and the web is wound printed-side-in, instead of printed-side-out.

Considering the apparatus in greater det-ail, land again referring to FIGURES 1 and 2, the web leaving lthe printing press line is shown at 6i), and runs through a pull unit generally designated 62. This is driven by a shaft oonnected at 64 to the main drive shaft running longitudinally alongside the press line and connected to the different presses. It drives the pull unit through ya PIV (positive 3 infinitely variable drive) 66 (FIGURE 2) in order to establish the necessary web tension and to compensate for changes in the diameter of the engraved cylinder of the printing press, which is here assumed to be a .rotogravure press.

The web is festooned within the pull unit in accordance with conventional practice, and in the present case the web runs between nip rollers 68, 70 (FIG. l) and downward to stationary idler 72, and upward to =a compensator roll 74, and thence downward to another stationary idler 76, and upward to another compensator roll 78, and downward to an idler 80. The compensating rolls 74 and 78 are air loaded. More specifically, a pneumatic cylinder 82 urges movable arms 84 upward, and these arms carry the rolls 74 and 78. The arms are pivoted on a shaft 86 carrying a cam S8 which actuates the servo-control 90 of a variable volume pump 92. The pump 92 and its driving motor 94 are better shown in FIGURE 2. If rolls 74 and 78 rise cam 88 is so designed as to stroke the pumps in such 'a manner as to increase the pump output and so cause the rewind motor to speed up. If the rollers descend, the rewind motors are slowed down.

The frame of pull unit 62 preferably carries a speed indicator 96 which is calibrated to read in =f.p.m. (feet per minute) and two calibrated dials 98 and 10i) with adjusting knobs for presetting the speed of the hydraulic motors which are driving the cores.

The calibrated dials 98 -and 100 `are also preferably calibrated in feet per minute, and the -said knobs are connected to liow control valves mounted on a replenishing or make-up pump unit with an oil reservoir and hydraulic valves, not shown in detail in the present figure of the drawings, but which may be located between the motors of the pull unit and the turnover unit, that is, near the top of FIGURE 2 as indicated at 102.

The knob for the empty core for the new roll can be brought up .to speed, or the web speed can be brought down to a desired web transfer speed, as set by the knob. These knobs control only during transfer, that is, they control only an empty core.

Referring now to FIGURES 2 and 4, the turnover shaft 14 is rotated or indexed by the motor and reduction gearing 30, previously referred to, which drive a' pinion 104 meshing with a large spur gear 106 mounted directly on one end of the tumover shaft 14. The reduction gearing at 30 is preferably a double reduction worm gear reducer so that t-he turnover shaft is indexed at slow speed with large torque, as is needed to handle the large heavy rolls here formed.

The core spindles are each driven through reduction gearing which may be Aa single reversible worm reducer, and through chain and sprocket `gearing next described. Hydraulic motor and reducer 32 is stationarily 4mounted directly on the floor vand drives shaft 110 carrying a sprocket gear 112. This drives a chain 114 which passes around a sprocket gear 116 (FIG. 2) which rotates freely on the axis of the turnover shaft 14. The chain 114 may be -tensioned by an idler 118. Sprocket gear 116 is secured to and turns a sprocket gear 34, and this drives a chain 120 running generally along the arm 16 and meshing with a driven sprocket gear 122 which is secured to the core spindle 20. Chain 120 is tightened by an idler 124, -adjustably mounted on the outside of arm 16. It will be evident that because the chain drive includes the

gears

34 and 116 disposed on the axis of lthe turnover shaft, the drive is in no way upset by the indexing of the arms 16, 18, that is by the change of a roll from starting posi-tion at the lower right in FIGURE 1 to finishing position at the upper left of FIGURE 1.

The reversible hydraulic motor and associated reducing gear at 36 is stationarily mounted directly on the fioor and is connected to shaft 130 which extends all the way across the unit to the opposite side I(FIG. 2) where shaft 130 carries a sprocket gear 132 connected by a chain 134 to van intermediate gear 136. The chain 134 is tightened by an idler 138. Intermediate gear 136 is secured to and turns a sprocket gear 38, both of these gears being freely rotatable on the turnover shaft 14. Gear 38 is connected by a chain 140 to a driven gear 142 mounted on 'core spindle 24. Chain 140 maybe tightened by an idler 144, which may be movably mounted on the outside of arm 18 to facilitate adjustment of the chain tension.

Referring to FIGURE 2, core spindle 24 carries a core chuck `for receiving one end of va vhollow or tubular roll core. The other end is received by a chuck 152 on spindle 26, and the latter is retractable by means of a hand wheel 154 for the removal of an old roll with its core and the insertion of a new core. While not shown in the drawing, yit will be understood that the spindle 20 similarly carries a chuck for one end of a :roll core, the other end of which is received in a chuck 156 secured at the inner end of spindle 22. This is retractable by means of a hand wheel 158 for the removal or addition of a core.

Referring now to FIGURE 1, the knite 40 and touch roll 50 are carried between support arms 52. These are oscillatable about a spindle 160 carried lby `bearings 162. The spindle 160 also carries an idler or guide roller 164 beneath which the web is led on its Way to the roll. The supports S2 are spaced apart a distance greater than the width of the web so that they do not interfere with the web.

An arm 166 projects downward from the supports and is connected to the piston rod 168 of actuator 54. In the present case the latter is a pneumatic cylinder and its remote end is pivotally anchored at 170 on an anchor or `bearing 1172. It may be released and moved to an opposite position, as was previously mentioned. The supports 52, and another arm 174 which is not used here, -but is used in the reverse arrangement shown in FIGURE 3, are al1 mounted on shaft 160 which carries guide roller 164.

Referring to FIGURE 3, the air cylinder 54 has been moved from pedestal 172 to right pedestal 173; the air cylinder 54 is directed toward the left instead of the right; and its piston rod 168 is connected to arm 174 instead of armv 166. The guide roller 164 on supports 162 is unchanged. The supports 52 and the touch roller 50 are unchanged, but the knife 40 has been reversed on the supports 52. Instead a double-edged knife could be used.

It will 'be noted in FIGURE 3 that there is ample clearance for the new roll to grow to moderate size, during which time the turnover shaft may be indexed about degrees to move the roll to the upper left position where it may grow to full size.

Reverting to FIGURE 1, the piston rod 168 is shown in extended position, and it will be understood that when it is retracted, the knife 40 is moved back for a substantial distance, thus affording room for the new roll to growto moderate size, by which time it may ybe indexed from the lower right to the upper left position where it can -grow to full size.

With the web Wound as shown in FIGURE 1 the new core 46 may be -added immediately after removal of a finished roll 44. To assist this removal it is customary to turn the arms and finished roll downward to a position near the iioor, and the new core may 4be added immediately after removal of the full roll, with the spindles 24 still at the left. However, when winding a web in the reverse fashion shown in FIG. 3 it is important not to add a new core 46 until after its

spindles

20 and 22 have been turned all the way to the position shown in FIG. 3. The web 42 running from lguide roll 164 to guide roll 56 is intended to remain beneath the core 46, and if the core were added while the spindles are still at the left of themachine, the core would not be able to pass through the web 42. However, by waiting until the empty spindles pass the web `42 there is no difficulty in then adding the core 46.

The Air Circuit The compressed air circuit is shown in PEG. 5 of the drawing, referring to which the 1air supply coming in at lStl leads to an air filter M2 and thence through the pressure regulating valve 154 to the control portion of an air volume booster lilo, which leads through a lubricator 127 and a flow control element 188 to a three-way air valve 29d, which in turn is connected through pipes W2 to the two yair cylinders 52 Which form ya part of the web pull unit shown `at the right of FIG. l, and which regulate the web tension. The pipe 194 carries the main supply of compressed air to the volume booster 186, and the pressure maintained by booster 186 is itself controlled by adjustment of pressure regulating valve 181i.

`Plow control element ld permits lfree flow in one direction, but adjus'tably restricted flow in the opposite direction.

Compressed air is also used to operate the 'actuator 54 for the cutting knife and touch roller. For this purpose air from filter l2 runs through `a lubricator 1% to a pressure regulator 1% and thence through pipe Zilli to a /l-way valve 262. T'hisis connected through line 21% to one end of actuator 54 and through line 2do to the other end of actuator 54. Both lines may be provided with adjustable throttles or iiow control valves (2tlg and 21d respectively) to control the speed of operation of the actuator. The lines at the actuator are preferably flexible hoses to facilitate change in the actuator position.

The 4-Way valve 202 is air operated in the present case, and for this purpose air is supplied through a pipe 2l2 to the pilot portion 2M of valve 292. The air for this purpose is controlled by a push button air valve 216. Depression of button 216 starts the web cut cycle. The button could be held down for a short time after the knife and touch roller operate, to obtain a few wraps of the web around the core. Instead we may employ a predetermined delay, tand `for that purpose a time delay adjusting screw 218 may be provided on the l-Way valve 202. llt provides a delay long enough to obtain a few wraps of the Web around the core of the new roll, following which the valve retracts automatically, thus moving the touch roller and Iknife back out of the way. lt therefore is enough to press the button 216 until the knife and touch roller Contact the web.

The valve 2&2 in .this particular :case is a Ross fourway-in-line pilot-operated sequence timed-out valve No. 1356A-3004. It is normally biased in one direction by the air supply, and moved in opposite direction by rnomentary depression of air button 2id. The adjusting screw 218 adjusts a needle valve controlling the rate of leakage of the air previously admitted by depressing the button 216, and the delay depends upon how slowly the air is permitted to leak off.

In FIG. 5 note cam 333 which operates the microswitch 332. The cam is preferably so shaped and disposed that it may be used with the actuator 54 in either position.

The Hydraulic Circuit The hydraulic circuit may be described with reference to FIG. 6. One of the two main stationary hydraulic motors for driving a core spindle is shown at 32, and the other is shown at .36. The source of hydraulic fluid is the main pump 92, driven by a main motor 94. An auxiliary replenishing or make-up pump 22d` may be provided, and this is driven by an auxiliary motor 222. This make-up motor and pump were previously referred to as being located at E62 in PEG. 2. The main tank is indicated at 224, and this may be followed by a heat exchanger 226 and a lter 22S, both of which may be bypassed by check valves 23d and 232, which are spring held so that they act also as relief valves and are set for a comparatively low pressure, say psi. These are followed by a check and relief valve 234 set for a higher pressure, say 65 p.s.i.

lt will be recalled that the

hydraulic motors

32 and 36 for turning the rolls are reversible, so that the web may be Wound print side out or print side in. This control of direction is obtained manually. One inexpensive method is to release certain holding screws and then turn a cam plate on the motor. In the present case the motors are axial piston iiuid motors made by Denison Engineering Division of American Brake Shoe Co. at Columbus, Ohio. These motors are provided with a cam plate which determines the direction of rotation, and the cam plate may be shifted as above indicated. Another method is to provide each motor with a two-position, four-connection valve (a so-called four-way valve), the piston or valve spool of which may be manually shifted in one direction or the other, thereby reversing the direction of rotation of the motor by interchanging the input and output connections.

It will be recalled that the unit shown in iFl'G. 1 has control knobs 98 and lll@ for adjusting the speed of the empty core preparatory to cutting the web, and this adjustment is obtained by means of the ilow control valves 98 and lull in FIG. 6, and which regulate the volume of the hydraulic fluid supplied to drive the motors 32 or 3d. One manual flow control valve or the other is put into circuit by the four-way valves 236 and 238. In one valve position the ilow goes directly to the motor. In the other valve position the flow goes through the flow control valve to the motor. The four-way valves are spring centered, and in the center position the motor is stopped because no oil flows, In FlG. 6 the valves are shown in center or neutral position. They are solenoid operated, by circuitry described later.

The four-Way valve 24d is pilot or hydraulically operated, automatically in response to the pressure in the system. During replenishment or make up, with motor 222 running and motor 9d still, the valve 24d blocks or is in neutral position. There is equal pressure on both sides, and spring centering. The system fills, and 'any excess bypasses through check valve 242, 1ine244, check valve 23d, lter 223, heat exchanger 226, and back to tank 224. When motor 94 is running against a load (motor 32 or/ and 36 running), the high pressure pump 92 hows oil through

line

246 and 248 to the four-way valves 236 and 233. Oil through line 256i' shifts valve 24@ to the right, and the return 252 from

motors

32 and 36 passes through valve Zttlback through check valve 231i, filter 223, and heat exchanger 226 to the tank 224. This is replenished by make-up pump 229; The purpose is to circulate the oil for filtering and cooling the same.

Gauge 256 is a low pressure gauge to show the makeup pressure. Gauge 258 is a high pressure gauge to show the operating pressure. l arts 26d` and 262 are needle valves which bypass a small portion of `oil around the motors to stabilize and dampen the system against momentary surges.

The servo system at 9! responds to the rise or fall of the dancer rolls. Rod 264 is a slave to rod 266 which leads to the dancer roll arm, and rod 264 connects to the internal pump hanger to change its volume or speed. The servo system may be built into the pump housing, the present pump being a Denison variable-volume axialpiston pump.

Relief valve 263 is adjusted for maximum pressure, say 3200 p.s.i. Relief Valve 27d is set for a lowerpressure, say 300 p.s.i., to relieve

motors

32 and 36 against excessive pressure when acting as a pump because the large heavy reel of 'cardboard coasts after cut off of power.

The hydraulic circuit driving the rewind is a closed loop circuit. Oil from the pump is directed to the hydraulic motors and then returned to the suction side of the main pump, making for a tight circuit. This circuit gives a fast response and good controllability. The pipe lines are always under pressure and therefore oil is available to all the valving for fast response.

In order to rewind light tension materials as well as heavy tension materials, check valves 272 and 274 have a 200-300 lb. spring holding the check valves in position. Without this feature it is difficult to operate the empty core motor through the ow control valve 98 or 10) and to obtain the proper core speed when Working with light tension materials. The spring in check valves 272 and 274 acts as a bias and causes the entire system to operate at a 200 to 300 p.s.i. higher pressure, which will cause the empty core motor to operate at the desired speed.

The Electrical Crcutry 'I'he electrical circuitry is shown in FIG. 8, and an array of push buttons for controlling the circuitry is shown in FIG. 7, this being an enlargement of lthe control buttons shown on the side of the frame 12 of 5the unit in FIG. 1. The push butons 300 and 382 run the turnover motor forward or backward. Theoretically this motor .need not be reversible and could be run forward, but in practice it is convenient to be able to move the turnover arms forward or backward to help locate the roll or the core in a desired position. The button 304 starts the make-up pump. The button 306 starts the main pump. The button 308 is the master stop button or safety button which brings everything back to neutral. Pilot lamps to show rotation of spindle #1 or spindle #2 are provided at 310 and 312. There are also start buttons shown at 314 and 316, but these are not normally needed or used during operation of the machine. There are also start

buttons

318 and 320 which shift the four-way valves 236 and 238 to make the

speed regulating knobs

98 and 100 effective. They are marked start because they are used when starting a new core. The associated

stop buttons

322 and 324 deenergize the four-way valves 236 and 238 so that they come back to center or neutral position. Thus a started core can be stopped if there is a change of plan, without stopping the entire system.

'Ihe dancer roll is controlled by on and

oif buttons

326 and 328. Finally -there is a transfer or start button 330 which transfers control to one spindle or the other, as may be needed, when rst starting up the system, or after a shut down. For completeness we may again mention the air button 216 in FIGS. 1 and 5, which causes actual cutting of the web.

The various buttons shown in FIG. 7 are similarly numbered in FIG. 8. The three phase motor for driving the make-up pump is shown at 222, while the larger main three phase motor for driving the main pump is shown at 94. A third three phase motor is shown at 30, this being the turnover motor which indexes the arms carrying the rolls. The push buttons are connected in across-theline circuits extending horizontally between the sides of a 115 volt line extending vertically at the left and right of (FIG. 8. These push buttons control the magnets or solenoids of relays, and the latter shift relay contacts which are designated in association with their respective relays, i.e., relay coil SC is for control of the make-up pump 222, and it operates holding contacts SC-l, and contacts SC-2, as well as the switch contacts for closing three phase circuit shown at SC-3, SC-4 and SC-S. Thus the button 304 starts the make-up motor which continues running, and it also closes the contacts SC-2 as an interlock which make it possible thereafter to use the button 306 to start the main motor.

When button 306 is closed it energizes relay coil HP for the high pressure pump, and this closes holding contacts HP-l Iand the main three-phase switch contacts HP-Z, HP-3 and HP-4. The button 306 also energizes relay coil HPR to provide additional interlock contacts. This closes relay contacts HPR-1, HPR-2 and HPR-3. 'I'he contacts HPR-1 make it possible to use the start or on button 326 for the dancer roll, and it energizes dancer roll relay coil DR, which closes holding contacts DR-l, and also contacts DR-2, which in turn energize the solenoid 190 for solenoid air valve 190 (FIG. 5) -which supplies air to the dancer roll load cylinder. Contacts HPR-2 are a safety interlock to prevent operation of the spindles until both pumps are running. Contacts HPR-3 control the main press and stop it if either hydraulic pump fails or if master stop button 308 is pressed.

Relay SA closes contacts SA-l enabling operation of

valve solenoids

1 and 3 for spindle #1, and

valve solenoids

2 and 4 for spindle #2.

Button 314 energizes relay R1 which closes holding contacts R1-1, it opens interlocks R1-2 and R13 and closes contacts R1-4 which energize the four-way valve solenoid 1 (see FIG. 6). Button 316 is similar, it energizing relay coil R2 which closes holding contacts R12-1 and contacts R2-4 of four-way valve solenoid 2 (see FIG. 6). It also opens interlock contacts R2-2 and RZ-S.

Button 318 energizes relay coil R3 which closes holding contacts R3-1, :and contacts R3-3 of four-way valve solenoid 3 (see FIG. 6). It also opens interlock contacts R3-2. Button 320 similarly energizes relay coil R4 which closes holding contacts R4-1 and contacts R4-3 which energize four-way valve solenoid 4 (see FIG. 6). It also opens interlock contacts R4-2.

Button 330 or/ and microswitch 332 energize a sequence relay coil SR which steps a ratchet wheel 331 in order to close contact 333 in up or down position. yIn np position it energizes relay coil CR|1 which opens contacts CRI-1 and it opens contacts CRI-2. It also closes contacts CR1-3 to change manual to automatic speed control of spindle `#1, which is the main purpose.

yIn down position the contact 333 energizes relay coil CRZ. This closes contacts CK2-3 for transfer from manual to automatic speed control of spindle #2. It also opens interlock contacts CRZ-l and CR2-2.

Unit 350 is a web break detector, to shut down the whole system if the web breaks. Parts 352 are overload or thermal circuit-breakers to protect the motors if overloaded. They stop the whole system because of the interlocks already described, if either motor overloads.

The switch 332 near the bottom of FIG. 8 is a microswitch corresponding to that shown in FIGS. 1 and 3. This is in shunt with the transfer button 330 so that it has the same effect. They step the sequence relay SR on ratchet wheel 331. The transfer button 330 is used when rst starting up the equipment at the beginning of a working day, or when first starting up the press line. The microswitch 332 automatically causes the same transfer function during each web-cut cycle, the cycle itself being initiated Iby pressing the air control button 316 prevrously mentioned and shown at the top of FIG. 5.

When the microswitch 332 is operated it also serves to stop the hydraulic motor which was previously driving the now full roll. In FIG. 8 the microswitch 332 energizes the stepping relay SR, 331, which moves Contact 333 down and so energizes relay coil CR-Z. This pulls in the GRZ-3` contact which energizes relay R2 which pulls 1n the R2-4 contact which actuates solenoid #2, and so transfers the #2 spindle to the dancer roller and disables the manual speed control which was used just prior to transfer. It will be recalled in FIG. 6 that solenoid 2 operates the four-way valve of the hydraulic motor 36 for the #2 spindle. The solenoid valves for both hydraulic motors come back to neutral if the solenoids are deenergized, and in such case the hydraulic motor controlled by the valve is stopped. 4Reverting to FIG. 8 the relay R2 holds contacts RZ-l, and at the same time the relay CRZ opens contact CR2-1 which deenergizes relay coil R1. The holding contact R1-1 opens and also the cont-act R14 opens Iand this deenergizes the coil of solenoid #1. By reverting to FIG. 6 it will be seen that the rdeenergization of solenoid #1 permits its four-way valve -to move back to neutral, thus stopping the hydraulic motor of spindle #1.

Operation The sequence of operation may be described as follows.

The make-up pump is started by means of its start button 364 (FIG. 7). This makes up for oil loss and makes sure that the system is filled with oil before the high pressure pump starts. The main pump is then started by means of button 396 and will build the pressure up from a make up pressure of say 115 p.s.i., to a main high pressure of say 3000 p.s.i. when loaded.

Assume now that the rewind is to be on spindle #1. The transfer button 330 is pressed and the pilot lamp for spindle #1 should light. If instead the pilot lamp for spindle #2 lights, the transfer button 330 is again pressed, whereupon the pilot lamp for spindle #2 will go out and that for spindle #1 will light; this taking place by reason of the notched wheel stepping relay or sequence relay previously mentioned in connection with PIG. 8 at 331.

The dancer roll on button 326 is then pressed, which puts the rewind into stall tension. The press is then started up and run in the usual manner.

Some time during the building up of the roll on spindle #l an empty core is prepared with pressure `sensitive tape and is put into position on spindle #2. The turnover arms are indexed by means of button Stili to bring the arms in proper position for web-cut when the roll on spindle #l is large enough, and a new roll is to be started on spindle #2.

The control valve or

knob

98 or 1% on top of the pull unit (FIG. 1) is adjusted to match or to be something less than the press speed, as indicated by the calibration scale associated with the knob.

The start button 320 isthen pressed and this operates the empty core on spindle #2 at the proper web speed, as previously set by the calibrated

knob

98 or 160.

The web cut cycle push button, i.e., the air control push button 216 shown at FIG. is depressed to initiate the web-cut cycle. It causes the knife to sever the web and it causes the touch roller to press .the new starting end of the web against the core on spindle #2. At the same time the travel of the actuator 54 trips the microswitch 332 shown in FIGS. 1 and 3 and near the bottom of FIG. 8. This stops rotation of the finished or full roll 44 on the #l spindle, and it subjects the #Z spindle to control by the dancer roll. The knife and touch roll retract automatically, but only after a predetermined delay, as previously explained, in order to obtain a few turns or wrappings of the new web around the new core.

The turnover arms are next indexed around part way so that there will be ample room for the new roll to grow, and at the same time to lower the full roll to a point near the oor where it may be more readily removed from the #1 spindle. A new core then may be prepared and placed on the #1 spindle, following which the arms may be indexed further, or the iinal indexing may be delayed until ready for the next web-cut cycle.

When rewinding on the #2 spindle it is necessary to adjust the flow control valve or calibrated knob 10G instead of 98 on top of the rewind unit to match the press speed, and to thereafter press the start button 318` instead of 320 to start rotation of the empty core on the #1 spindle. This reversal of the buttons and pilot lamps when changing from one spindle to the other will be selfevident.

It is believed that the method of constructing and operating our improved continuous turnover rewind, as well as the advantages thereof, will be apparent from the foregoing detailed description. It will also be apparent that while we have shown and described our invention in a preferred form, changes may be made in the structure shown, without departing from the scope of the invention as sought to be defined in the following claims.

We claim:

1. A two-spindle turnover rewind for forming large heavy rolls which may be wound print side in from a continuously supplied cardboard web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of the said arms, web guide rollers at the middle of said arms on opposite sides of the turnover shaft, a `stationary motor to index the turnover shaft, a stationary hydraulic motor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, another stationary hydraulic motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, the direction of rotation being printed side in, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the yknife and touch roller, an air cylinder lactuator to move said supports transversely of the web toward the unprinted side of the web and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than or equal Ito the linear speed of the continuously supplied web, an air valve controlling said air cylinder actuator, a manually operable control for said air valve, a delay means causing a briey maintained operation of said actuator corresponding to one or more rotations of the new roll, and means also responsive to said manually operable control to automatically stop the completed roll.

2. A two-spindle turnover rewind for forming large rolls which may be wound print side in or print side out from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll corey spindles at the ends of said arms, web guide rollers alt the middle of said arms on opposite sides of the turnover shaft, a motor to index the turnover shaft, a reversible motor to rotate one roll core spindle, another reversible motor to rotate the other roll core spindle, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to receive the knife with its cutting edge facing either forward or rearward, said supports being so designed at the touch roller as to expose the roller both forward and rearward, an actuator to move said supports transversely of the web toward the core spindle of a new roll and` to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, and means whereby the positioning of the actuator may be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation.

3. A two-spindle turnover rewind for forming large rolls which may be wound print side in or print side out from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, 'a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, web guide rollers at the middle of said arms on opposite sides of the turnover shaft, a motor to index lthe turnover shaft, a reversible stationary motor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, another reversible stationary motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to receive the knife with its cutting edge facing either forward or rearward, said supports being so designed at the touch roller as to expose the roller both forward and rearward,

-11 an actuator to move said supports transversely of the web toward the core spindle of a new roll and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, means whereby the positioning of the actuator may be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than or equal to the linear speed of the continuously supplied web.

4. A two-spindle turnover rewind for forming large heavy rolls which may be wound print side in or print side out from a continuously supplied cardboard web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, web guide rollers at the middle of said arms 0n opposite sides of the turnover shaft, a stationary motor to index the turnover shaft, a stationary reversible hydraulic motor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, another stationary reversible hydraulic motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to .re-

ceive the knife with its cutting edge facing either forward or rearward, said supports being so designed at the touch roller as to expose the roller both forward and rearward, an air cylinder actuator to move said supports transversely of the web toward the core spindle of a new roll and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, means whereby the positioning of the actuator may be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation.

5. A two-spindle Iturnover rewind for forming large heavy rolls which may be wound print side in or print side out from a continuously supplied cardboard web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, vweb guide rollers at the middle of said arms on opposite sides of the turnover shaft, a stationary motor to index the turnover shaft, a stationary reversible hydraulic motor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, another stationary reversible hydraulic motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, a knife disposed transversely of the web, a touch roller disposed ltransversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to receive the knife with its cutting edge facing eitherforward or rearward, said supports being so designed at the touch roller as to expose the roller both forward and rearward, an air cylinder actuator to move said supports transversely of the web toward the core spindle of a new roll and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, means whereby the positioning of the actuator may be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than or equal to the linear speed of the continuously supplied web, an air valve controlling said air cylinder actuator, a manually operable control for said air valve, a delay means causing a briefly maintained operation of said actuator corresponding to one or more rotations of the new roll, and means also responsive to said manually operable control to automatically stop the completed roll.

6. A two-spindle turnover rewind for forming large rolls from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, a motor to index the turnover shaft, a motor to rotate one roll core spindle, a motor to rotate the other roll core spindle, means to automatically vary the rate of rotation of the roll core being used in order to match the linear speed of the supplied web, a knife disposed transversely of the web for cutting the web when completing one roll and starting another, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, an actuator to move said supports transversely of the web toward the core spindle of a new roll to simultaneously cut the web between the old and new rolls and to press the new starting end of the web Aagainst the core of the new roll, a web speed indicator,

manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than or equal to the linear speed of the continuously supplied web, and means to automatically transfer control of the motor driving the new roll from manual to automatic speed control on operation of the knife.

7. A two-spindle turnover rewind for forming large rolls from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, a motor to index the turnover shaft, a stationary motor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, a stationary motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, means to automatically vary the rate of rotation of the roll core being used in order to match the linear speed of the supplied web, a knife disposed transversely of the web for cutting the web when completing one roll and starting another, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, an actuator to move said supports transversely of the web toward the core spindle of a new roll to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than or equal to the linear speed of the continuously supplied web, and means to automatically transfer control of the motor driving the new roll from manual to automatic speed control on operation of the knife.

8. A two-spindle turnover rewind for forming large rolls which may be wound print side in or print side out from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, web guide rollers at the middle of said arms on opposite sides of the turnover shaft, a rst motor to index the turnover shaft, a reversible motor to rotate one roll core spindle, another reversible motor to rotate the other roll core spindle, means to automatically vary the rate of rotation of the roll core being used in order to match the linear speed tof the supplied web, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to receive the knife with its cutting edge facing either forward or rearward, said supports being so designed at the touch roller as to expose the roller both forward and rearward, an actuator to move said supports transversely of the web toward the core spindle of a new roll and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, means whereby the positioning of the actuator may -be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new r-oll may be driven at a linear speed slightly less than or equal to the linear speed of the continuously supplied web, and means to Iautomatically transfer control of the motor driving the new roll from manual to automatic speed control on operation ofthe knife.

9. A two-spindle turnover rewind for forming large rolls which may be wound print side in or print side out from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, web guide rollers at the middle of said arms on opposite sides of the turnover shaft, a rst motor to index the turnover shaft, -a reversible stationary m-otor to rotate one roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, another reversible stationary motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the axis of the turnover shaft, means to automatically vary the rate of rotation lof the roll core being used in order to match the linear speed of the supplied web, a knife disposed transversely of the web, a touch roller disposed transversely of the web, movable supports for both the knife and touch roller, said supports being so designed at the knife as to receive the knife with its cutting edge facing either forward or rearward, said supports being so `designed at the touch roller as to expose the roller both forward and rearward, an actuator to move said supports transversely of the web toward the core spindle of a new roll and to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, means whereby the positioning of the actuator may be reversed relative to the new roll core spindle in order to move the knife and touch roller toward the core cylinder in opposite direction so that the web may be wound in opposite direction of rotation, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, and means affording comparison of the web speed and core speed, whereby the motor driving the empty core for the new roll may be driven at a linear speed slightly less than -or vequal to the linear speed of the continuously supplied web, and means to automatically transfer control of the motor driving the new roll from manual to automatic speed control on operation of the knife.

10. A two-spindle turnover rewind for forming large rolls from a continuously supplied web, said rewind cornprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, a motor to index the turnover shaft, a motor to rotate one roll core spindle, a motor to rotate the other roll core spindle, a knife disposed transversely of the web for cutting the web when completing one roll and starting another, a touch roller disposed transversely of the web, a movable support for both the knife and touch roller, an actuator to move said support transversely of the web toward the core spindle of .a new roll to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, a manually depressible push button control to cause operation of said actuator, delay means to cause a briey maintained operation of said actuator corre sponding to one or more rotations of the new roll, and means also responsive to operation of said manual control to automatically stop the completed roll.

ll. A two-spindle turnover rewind for forming large rolls from a continuously supplied web, said rewind comprising a stand carrying a turnover shaft, a spaced pair of relatively long arms carried by the turnover shaft, roll core spindles at the ends of said arms, a motor to index the turnover shaft, a stationary motor to rotate one roll core spindle, drive means therebetween including gearing centered on the Iaxis of the turnover shaft, a stationary motor to rotate the other roll core spindle, drive means therebetween including gearing centered on the aXis of the turnover shaft, a knife disposed transversely of the web for cutting the web when completing one roll and starting another, a touch roller disposed transversely of the web, a movable support for both the knife and touch roller, an actuator to move said support transversely of the web toward the core spindle of a new roll to simultaneously cut the web between the old and new rolls and to press the new starting end of the web against the core of the new roll, a web speed indicator, manually adjustable core speed regulating means adjacent the web speed indicator, means affording comparison of the web speed and core speed, whereby the motor driving the emp-ty core for the new roll may be driven `at a linear speed slightly less than or equal to the linear speed of the continuously supplied web, a manually depressible push button control to cause operation of said actuator, delay means to cause a briefly maintained operation of said actuator corresponding to one or more rotations of the new roll, and means also responsive to operation of said manual control to automatically stop the completed roll.

References Cited in the le of this patent UNITED STATES PATENTS 2,586,832 Kohler Feb. 26, 1952 2,686,015 Stevens Aug. 10, 1954 2,718,362 Piperoux et al Sept. 20, 1955 2,860,839 Bower Nov. 18, 1958 2,969,930 Zernov Jan. 3l, 1961 2,973,158 Zernov Feb. 28, 1961

Claims

10. A TWO-SPINDLE TURNOVER REWIND FOR FORMING LARGE ROLLS FROM A CONTINUOUSLY SUPPLIED WEB, SAID REWIND COMPRISING A STAND CARRYING A TURNOVER SHAFT, A SPACED PAIR OF RELATIVELY LONG ARMS CARRIED BY THE TURNOVER SHAFT, ROLL CORE SPINDLES AT THE ENDS OF SAID ARMS, A MOTOR TO INDEX THE TURNOVER SHAFT, A MOTOR TO ROTATE ONE ROLL CORE SPINDLE, A MOTOR TO ROTATE THE OTHER ROLL CORE SPINDLE, A KNIFE DISPOSED TRANSVERSELY OF THE WEB FOR CUTTING THE WEB WHEN COMPLETING ONE ROLL AND STARTING ANOTHER, A TOUCH ROLLER DISPOSED TRANSVERSELY OF THE WEB, A MOVABLE SUPPORT FOR BOTH THE KNIFE AND TOUCH ROLLER, AN ACTUATOR TO MOVE SAID SUPPORT TRANSVERSELY OF THE WEB TOWARD THE CORE SPINDLE OF A NEW ROLL TO SIMULTANEOUSLY CUT THE WEB BETWEEN THE OLD AND NEW ROLLS AND TO PRESS THE NEW STARTING END OF THE WEB AGAINST THE CORE OF THE NEW ROLL, A MANUALLY DEPRESSIBLE PUSH BUTTON CONTROL TO CAUSE OPERATION OF SAID ACTUATOR, DELAY MEANS TO CAUSE A BREIFLY MAINTAINED OPERATION OF SAID ACTUATOR CORRESPONDING TO ONE OR MORE ROTATIONS OF THE NEW ROLL, AND MEANS ALSO RESPONSIVE TO OPERATION OF SAID MANUAL CONTROL TO AUTOMATICALLY STOP THE COMPLETED ROLL.