US1002342A - Metal-creasing machine. - Google Patents

Description

H. G. H..WALSH. mmm. GREASING MACHINE.

APPLIGATION FILED 001231, 1910` Patented Sept. 5,1911.

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H. G. H. WALSH. METAL CRBASING MACHINE.

APPLICATION FILED 001231. 1910.

1,002,342, y Patented Sept. 5,1911.

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. .Bra K H. C. H. WALSH. METAL CRBASING M AUHINE. APPLICATION FILED 00T. a1, 1910.

H. C. H. WALSH. METAL GRI-:Asma MACHINE. APPLIOTION FILED 00T. 31, 1910.

1,002,342. Patented Sept. 5,1911.

agi-@vtm H. C. H. WALSH. METAL GREASING MACHINE. APPLIGATION FILED 0013111910.

1,002,342. Patented sept. 5,1911.

6 SHEBTSMSHEET 5.

UNITED sTATEs PATENT oEEIcE.

HARRY C. H. WALSH, 0F CHICAGO, ILLINOIS, ASSIGNOB OF ONE-HALF '10 A. A. KINNE. 0F MINNEAPOLIS, MINNESOTA.

METAL-CREASING MACHINE.

Specication of Letters Patent.

Patented Sept. 5, 1911.

Application led October 31, 1910. Serial No. 589,850.

My invention relates to metal creasing.

machines, more particularly to machines for forming creases in primarily straight andcylindrlcal sheet met-al pipe or tube sections to put them in condition to be readily ben into the form of elbows.

In myco-pending appdication, Serial No. 490,680, f iled April 19, 1909, I disclose a ma chine for creasing sheet metal, but this machine is not entirely automatic, it 'being necessary to set the creasing rollers or ldisks after each operation of forming a crease, the machine thus constantly requiring an attendant.

One important object of my present invention is to provide a construction in which a creasing disk is automatically shifted from one creasing plane into another.

Another important objecth is to provide drive controlling mechanism which can be -primarily set to start the machine, which is automatically held in adjustment to maintain driving of the machine until the creas ing operation on a blank set into the machine has been completed, Aand which is automatically restored to cause stopping of the machine after such creasing operation. In general, my invention has for its object to `provide a machine of the class described, which isof simple construction and lwhich will rapidly and efficiently-crease a fed-in blank and which is entirely automatic in its operation from the time it is started at the beginning of the creasing operation up to the time when the creasing operation on a blank is finished.

In the accompanying drawings, which clearly illustrate my invention' Figure A1 is a pla-'n' view of a machine, Fig. 2 is a side elevational view taken from plane 2 2,` Fig. l, Fig is a sectional view taken on plane 3 3, Fig. 1, Fig. 4 is a sectional View taken on plane 4-4, Fig. 1, Fig. 5 is an enlarged sectional view taken substantially on plane 5 5, Fig. 1, Fig. t5 is an enlarged sectional view taken on plane 6- 6, Fig. 1, Fig. 7 is .a sectional View teken on plane 7 7, Fig. 6,

Fig. 8 is an enlarged sectional view taken on plane 8 8, Fig. 1, Fig. 9 is an enlarged view partly sectional, showing the clutch mechanism for controlling the connection of the driving shaft with the `driving pulley, and Fig. 10 is an enlarged perspective `view of a removable bearing structure for the main shaft of the machine.

The supporting frame for the machinery parts comprises a tubular standard 1 rising from a base- 2 and supporting at its top a bed plate or table 3. A main shaft 4 is journaled in main bearing heads 5 and G formed at the frontnpper ends of upright walls 7 and 8 extending fromthe bed plate 3, as best shown in Figs. l and 2. As best shown in Figs. 6 and 7, the bearing head G carries abushing 9 having the eccentric bore 10, in which shaft 4 is directly journaled, .this bushing being prevented from rotation within the bearing head by a ke 11. Keyed to shaft 4 adjacent the outsi e of t-he bearing head 6 is a transmission gear 12, and rotatably mounted on the bushing 9 adjacent the inner side of the bearing hea-d 6 is a gea-r 13, Whose hub 14 extends in- Wardly a distance to the inner end ofthe bushing 9. Counter-shaft 15 is journaled in the wall 7 tothe rear of the shaft 4 and mounts at its outer end a transmission pinion 16 and at its inner end a transmission pinion 17, pinion 1G `meshing withV transmission gear 12 and pinion 17 meshing with gear 13, so that the rotation of the shaft 4 will be transmitted through gears 12, 16 and 17 to gear 13 and its hub 14. Mounted on 4the inner end of hub 14 is a collar 18, which is secured to rotate with the hub by means of a key 19, this key being secured to the hub by set screw 20 and having an endprojection 21, the collar having longitudinal movement on the hub limited by the key projection 21 and the gear 13.

As best shown in Fig. G, a clamping strap or band 22 encircles the collar 18 and has lugs23 and 24 for receiving the clamping screw 25. This clampingV screw has a may be inserted between the collar 18 and the strap to abut against the flange 18 at the inner end of the collar. Lever 27 1s then swung downwardly to draw the strap 22 firmly against the collar and thus to clamp the blank securely in place to rotate upon rotation of shaft 4. Rigidly mounted on the inner end of shaft 4 adjacent collar 18 is a die-roller 30 having the peripheral grooves 31 formed between peripheral ridges 32, these grooves and ridges being in planes at right angles to the roller axis. The eccentric position of the shaft 4 within bushing 9 is such that the horizontal distance inwardly from the center of shaft 4 tothe outer peripheryT of the collar 18 is equal to the external radius of the roller, so that the blank will be parallel with and against the roller along its inner, side. Furthermore, the gearing adjustment between the shaft and the collar 18 is such that the collar will have.the same peripheral speed as that of the roller.

Referring particularly to Figs. 1, 3 and 10, the inner end of the shaft 4 is supported -in a removable bearing frame 33, this frame having horizontal and vertical arms 34 and 35, the arm 34. terminating at its inner end in aisleeve 36 adapted for sliding engagement with a stud 37 extending from the wall 38 projecting upwardly from the bed plate 3. The arm 35 extends downwardly and has sliding engagement with a stud 39 extending horizontallyfrom the end of the forwardly projecting part 40 of the bed plate 3. When 1t is desired to apply a tubular b la'nk t0 the die roller, the bearingframe is by means of a handle 41 slid outwardly on its supporting studs until sleeve 36 of arm 34 leaves stud 37, and the bearing head 33 leaves the end of the shaft 4, whereupon the bearing frame can be swung downwardly away from the end of shaft 4, so that the blank can bev -slipped over the die roller and into the clampin mechanism. The stud 39 is longer than stu 37, and a flange 42 at the outer end thereof will prevent arm 35 on the bearing frame from leaving the stud, this stud acting as a bearing pivot for the bearing frame,-

when this frame is. swung away from the shaft 4.4 When the tubular blank is inserted the bearin frame is againswung back and l its ends sli along the studs tol carry the bearing head 33 to again receive the end of shaft 4 to assist in supporting the shaft .during the creasing operation. Extending upwardly f from the bed plate 3 is a wall 43 whose upprsurface forms a slide-way 43 parallel w-ith shaft 4 for supporting the head 44 of the travelin .carriage 45 for `the creasin disk 46. A eam 47 secured at the ends'o the wall 43. bridges over the surface 43. and forms the upper guide surface -for the carriage 4 5. The rear end of frame 45 has a longitudinal vertical compartment 48.

Within the front end of this compartment a cam roller 49 ispivoted to a pin 50 extend'- ing through the side walls 51 and 52 adjalcent the. compartment.

lithin the compartment at its rear end is the roller 53 mounted on'the shaft 54 journaled in slide blocks 55 and 56 confined within the longitudinal recesses 57 and 58 formed in the walls 51 and 52. Extending rearwardly from the blocks and through. the rear wall 59 of the carrier frame are guide pins 60 and 61 respectively, whose outer ends abut against a plate 62 slidable on a rod 63 secured to and extending rearwardly from the wall' 59 of the carrier frame, a spring 64 encircling this rod between the plate 62 and nuts 65 engaging the end of the rod, the pressure of the spring tending to force forwardly the bearing blocks of the roller 53. The intermediatc sections 66 and 67 of walls 51 and 52 of the carrier frame are expanded to receive a sleeve 68, which sleeve is mounted on shaft 69 by means of a key 70 operating in keyway 71, so that the sleeve may have longitudinal movement of shaft 69 but must rotate therewith. The openings 72 through the expanded sections 66 and 67 are elliptical, the vertical diameter being the same as the outer diameter of sleeve 68, but thelongitudinal diameter being somewhat longer, so that the carrier frame 45 may have forward and back reciprocal movement to carry the creasing disk 46 toward and away from the die roller, the carrier frame 45 being supported in its forward and back reciprocal movement by the surface 43 and the sleeve 68. The walls 51 and 52 are confined on the sleeve 68 between an intermediate flange 73 on said sleeve arid a collar 74 having threaded engagement with the end of the sleeve, as best shown in Fig. 4. Keyed to the sleeve between the expanded sections 66 and 67 of the carrier frame is a cam disk 75 whose cylindric cam surface 57 is broken by a notch 76. This cam disk is between the cam roller 49 and the roller 53. In the position A shown in Fig. 3 the notch 76 receives the cam roller 49, and the carrier frame is 'in its rear position to hold the creasing disk 46 away from the die roll, the spring 64 acting to draw the carrier.frame rearwardly when the notch comes in position to receive the which meshes with a pinion 78 mounted on arbor 79 mounted between the walls 7 and 84 extending from the bed plate 3. This arbor also mounts a gear 8O secured to 'rocani abutment 23cm-111111116, so ,that'avhen tate with pinion 78, and this gear meshes 95 will be swung outwardly whereby thc with a pinion 81 mounted on arbor 82 also rod 101 is shifted outwardly a distance by supported by the walls 7 and 8, a gear 83 the pawl, the paw] upon return of the lcmounted on this arbor being secured to ro- Ver gliding back over the rod to carry its tate with pinion 81, this gear 83 meshing tooth into engagement with the next notch, '70 with the pinion 16 meshing with gear 12 and so on. This step by step movement of -on main shaft 4. The transmission train the rod 101 is communicated to the sleeve between shafts 4 and l69 is such as will re- 68 by the connecting frame 107 (Figs. 4 duce the rate of rotation of the. shaft) and 8), the lower head 107 of this frame 10 `so that the main shaft and the die roll being secured to the rod, and the uppci.` 75 thereon will -rotate a number of times for head 107" being clamped about the sleeve one rotation of shaft. 69 and the cam disk 75. to allow rotation of the sleeve therein, but The creasing disk 46 is pivoted between the being confined against lateral displacement bifurcate ends 84 and 85 extending from by the intermediate flange 73 on said sleeve the head 86, which head is slid-ably supand the end lange 108 thereon. Thus, for 80 ported on bolts 86 extending forwardly each rotation of the shaft 69 and sleeve 68 from the head4 44 of the carrier 45. A thereon the sleeve will be shifted laterally `lplunger extension 87 extends rearwardly a distance with the rod 101, the shifting from the head 86 land into a pocket 88 distances being equal to the distances beformed in head 44, a spring 89 being intween the creasing grooves on the die roll, 85 seted` in the pocket to abut against the so that after the creasing disk has coperlunger, this spring tending to hold the ated with one creasing. groove, the carrier ead 86 outwardly against the heads of the frame will be automatically shifted to carry bolts- 86'.. Therefore, when the carrier the disk into position beforethe next groove, frame 45 is shifted forwardly upon engageand so on until the creasing operation on 90 ment of the cam roller with the cylindric the blank is completed. surface of the cam disk the creasing disk In order that the machine may be autowill yieldably force its way into the eor maticallystopped when the-'last crease has responding4 groove of tlie die roll, and as been formed in the blank I provide the folthe die roll 1s given a number of rotations lowing mechanism. Referring first to Fig-.95

- for each rotation of the cam disk`4 the metal,y 9, the driving pulley 109 is loosely mounted of the blank will be gradually deected and on shaft 4, and adjacent the liub `of this pulworked into the groove with which the ley a 'clutch collar 110 is keyed to the shaft. creasing disk is associated. This gradual This clutch collar has the passageway 111 working of the metal into forinwill elimitherethrough for receiving the clutch pin 100 nate cracking or breaking thereof and the 4112, the hub having the clutch pocket 113 formation of weak spots. in which the end of the pin may engage to Referring now to Figs. 1, 4 and 5, the clutch the pulley to the collar and thusto shaft 69 is journaled in a bearing sleeve 90 the shaft. The out-er end of the clutch pin supported from the rear end of wall 8 and has a transverse slot 114 in which plays the 10b in a bearing head 91 at the rear end o f wall arm 115 extending from the hub 116- piv-y 38, the right end of the shaft carrying a oted to a pin 117 extending from the shaft 4 cam disk 92 having the axially extending adjacent the clutch collar 110. An a rm.118 cam ridge 93 formed on its outer face. The extending in the opposite 'direction from "15 L-shaped frame 94 is secured to the top of hub 116 abuts against the head 119' at the 110 the bearing head 91 and depends in front of end'of a sleeve 120, which slides in pocket the cam disk. A cam `lever 95 is pivoted at 121 formed inthe clutch collar, a spring 122 its upper end 96 to the frame 94, and at being confined in this pocket and' in the an intermediate pointpivots a cam roller sleeve 120. The head 119 is thus urged out '50 97 in the path of the cam ridge 98, the wardly by .the spring against the arm 118 115 lower end of the lever 95 pivoting a pawl so that the arm 115 presses inwardly on the arm 98 whose pawl tooth or point 99 coclutch pin ready to force the pin into the operates with notches 100 formed in thel rod pocket 113 when this pocket comes into reg- 101,1f The pawl arm has the extension 102 ister with the passageway i111. The hub 116 55 Iwhereby it may be readily lifted from the has also a cam extension 123 for cooperating 120 notches 100, and the rod 101, at its outer end with the end of an arm 124 pivoted to the has-the manipulating head 103. The can) wall 7 below shaft 4. A frame 125 mounted 'roller 97 is held in the path of the cam ridge on -the Wall 7 has an abutment extension 126 93' by a spring 104 abutting against lever looping about the arm .to form a slide-way 60 95 and accommodated in the pockoted lug therefor, and a spring 127- mounted in the 125 extending from frame 94. Shaft 101, pocket 128 in this frame abuts against the i is slidably 'supported' in the wall 3S'and. in arm and tends to swing this arm against a lug 1.06 extending from't-he bearing sleeve the abutment 12,6 and into position to' hold* 90, and u ion each rotation of shaft 69 and its upper rounded end 129m the path of the 66 the cam 92 the pawlsupportingjever 180 thc arm is in this position and the cam abutment is carried against the end thereof with the rotating' shaft, the hub 11G will be rotated against the compression of spring 122 to withdraw the clutch pin from the pulley hub, thus to release the pulley from the shaft. Pivoted to the arm 124 is a link 130 which pivots to one arm ofa bell crank lever 131 pivoted at its elbow to the rear end of wall 7, the other arm of this lever being pivoted to the clutch rod 132, which slides through the wall 38 and which at its end has the handle 134. In normal position the spring 127 holds arm 124 in positionto effect uncoupling of the drivingr pulley from shaft 4, and to effect coupling connection clutch rod 132 is drawn outwardly to rotate the.

arm 124-to carry its end away from the cam abutment 123 to allow the spring 122 to effect movement of the clutch pin 112 into clutching engagement within the pulley, so that the shaft 4 can be driven by the pulley. Referring particularly to Fig. 4, clutch rod 132 has -a latch collar 135 'secured thereon which receives in latching engagement .the hooked end 13G of a latch arm 137 which is pivoted between lugs 138 extending from.

shifted to carry the creasingdisk in Iposition in front of the last4 creasing ,groove on the die? rollthe extension 140 will be just in frontof the trip extension 139 of the latch arm, and when the rod 101 is shifted again by the next engagement of the cam roller with the cam disk 92 the extensions 140 and strikes the end of the arm the hub 116 will lie-rotated and the lever 115 swung to carry the clutch pin out of clutch pocket 113 to thereby unclutch the driving pulley from .the shaft. To more quickly stop the machine after such unclutching, a` breaking strap 114 -is pvoted to a stud 142 extending` from wall 7 and embraces a sleeve 143 pinned to shaft 4 (Figs. 1 and 2). The frict-ional engagement is adjusted by a screw 144. This frictional engagement of the breaking strap quickly brings the machine parts to rest after uncouplingr ofthe driving pulley, and -it also serves to make the operation of the machine lmore steady and more uniform.

I claim- 1. In a machine of the class described, the combination of a main driving shaft, a die roll mounted onv said shaft to rotate therewith, a counter shaft and a transmission train connecting said count-er shaft with the main shaft, a cam carried on said counter shaft, a reciproctble carrier frame, a cam roller on said frame coperating with said cam on the tounter shaft to cause reciprocation of the carrier frame upon rotation of the counter shaft, a creasing disk pivoted on said c'trrier frame to be reciprocated into and out of coperative association with said die roll, and means for shifting said carrier yframe step by step in a direction parallel with the axisl of the die roll.

2. In a machine of the class described, the combination of a lnain driving shaft, a die roll mounted on said shaft lo rotate therewith, a counter shaft and a transmis sion. train connecting said counter shaft with the main shaftl` a cam carried on said counter sha-ft, a reciprocable carrier frame, a cam roller on said frame coperating,y with said cam on the counter shaft to cause reciprocation of the carrier frame upon rotation of the courter shaft, a creasing disk pivoted on said carrier frame to be reciprocated into and out of coperative association with said die roll, and means automatically controlled by the rotation of .said counter sha-ft to'shift the carrier step by step in a direction parallel with the axis of the die roll to carry the. creasing disk successively from one position to another with reference to the die roll.

3. In a machine of the class described` the combination of a main driving shaft.

a. die roll mounted on said shaft to rotate therewith, a counter shaft and a transmission train connecting said counter shaft with the main shaft, a cani carried on said counter shaft, a reciprocable carrier frame.

a. cam roller on said fra-me coperating with said cam on the counter shaft to cause reciprocation of the carrier frame upon rotation of the counter shaft` a creasimgT disk pivoted on said carrier frame to be reciprocated into and out of coperative association with lsaid die roll, and pawl and ratchet mechanism connected with said carrier frame and said counter shaft and controlled upon rotation of the counter shaft, to cause step by step bodily shiftinglof the carrier frame to carry the creasing disk from one position to another with reference to the die roll.

4. In a machine of' the class described, the combination of a'main .driving shaft, a die roll mounted on said shaft and having a plurality of forming grooves, means for supportingh blank to rot-ate with said roll,

a counter shaft connectedV with the main shaft, a carrier frame mounted to reciprocate at right angles to' the axis of said rollmechanism controlled by the rotation of4 said counter shaft to cause step by step bodily shifting of said carrier frame alternat'ely with its reciprocations by said cam mechanism. i

5. ln a machine of the class described, the combination of a main shaft, a die roll mounted on said shaft to rotate therewith and having a. row of peripheral grooves, n'ieans tor supporting a blank on said roll in position to be creased, a carrierframe adapted to reciprocate in a direction at right angles with the axis of saidwroll, a creasingdisk pivoted on said carrier frame to cooperate with the grooves on said roll,

a counter shaft 'connected with the main' shaft, a cam train connecting said counter shat't with the carrler frame for causing reciptaication of said frame upon rotationv oi: the' counter shaft to carry the creasing disk to and from the roll, said carrier frame being adalited to move bodily in a direction parallel Vwith the die roll, cam mecha msm actuated by said counter shaft, and pawl and ratchet mechanism controlled by said cam mechanism to edect step by step bodily shifting of the carrier frame parallel with the die roll to carry the creasing disk successively into association with the grooves of said die roll. y

6. In a machine of the class described, the combination of a main shaft, a die roll mountedon said shaft and having a plurality of creasing grooves in its surface, means for sgecnring a-blank to rotate with the shaft aiid with the die roll, a carrier frame, a creasing disk pivoted to said carrier fra-me, said carrier frame being mounted to be moved bodily in a direction parallel to the roll axis and to be reciprocated in a direction at right angles with the. axis of said roll, cam mechanism connected to be driven upon rotation of the-main shaft, means controlled by said cam mechanism for etl'ccting step by ste p lateral shifting of said carrier frame parallel with the roll to carry the creasing disk successively into position Vbefore the grooves of said roll. and a cam train connected in driving relation with said. main shaft and with `said carrier fraaie to elfi-ct fornvard movement. of said frame after each lateral shift thereof, thereby to move the creasing disk into operative association with the respective groove of the die roll.

T. ln a machine of the class described, the

combination of a` main shaft, a die roll nn'mnt'ed on said shaft, means for clamping a blank in position on the die roll, a companion die member, and means 'for automatically (.'ausing the companion die member to be alternately shifted bodily in a direction parallel with the die roll and in a direction at right. angles with said die roll.

8. ln a machine of the class described, the coml'iination of a main shaft, a die roll mounted on said shaft and having a row of peripheral grooves, a carrier frame, a creasing disk pivotcd on said carrier frame, said frame being adapted to reciprocate, longitudinally at right angles with the roll land to be shifted laterally bodilyparallel with the roll, cam mechanism connected indriving relation with the main shaft for controlling the longitudinal movement of said frame, cam mechanism connected in driving relatiornwith the main shaft for controlling the lateral movement of said frame, and means l said counter shaft With the main shaft,-

a carrier frame pivoting a creasing disk, said frame being mounted to be moved laterally parallel with the die roll to shift the creasing disk bodily in axial direction andto be moved longitudinally in a direction perpendicular to the roll to carry the disk bodily in radial direction, a cam roller on said carrier frame, a cam disk on saidcounter shaft and coperating with said cam roller to etlect longitudinal movement of said frame, a ratchet bar connected with tsaid frame, pawl mechanism for cooperating with said ratchet bar, and cam mechanism driven by said counter shaft to control the pawl mechanism to etfect step by step shifting of Isaid ratchet bar and of the carrier frame connected therewith.

10. ln a machine of the class described. the combination of a main sha ft. a die member mounted on said shaft, a carrier frame, a cmnpanion die member mounted on said carrier frame, means for bodily shifting said rarrier frame to carry the companion die member in various positions with reference tothe first die member. a main driving mem and means for effecting unclutching of the' clutch mechanism upon such release.

In Witness whereof, I hereunto subscribe my name this 26th day of October, A. D.,

. HARRY C. H. W'ALSH.

Witnesses:

CHARLES J. SCHMIDT, NELLY B. DEARBORN.

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