US1754702A

US1754702A - Web-cutting machine

Info

Publication number: US1754702A
Application number: US322936A
Authority: US
Inventors: Jr George W Swift
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-11-30
Filing date: 1928-11-30
Publication date: 1930-04-15
Anticipated expiration: 1947-04-15

Description

April 15, 1930.

s. w. SWIFT, JR-

WEB CUTTING MACHINE Filed Nov. 30, 1928 2 Sheets-Sheet nomtoz Patented Apr. 15, 1930 UNITED STATES PATENT OFFICE GEORGE W. SWIFT," J R., OF BORIJENTOWN, NEW JERSEY, ASSIGNOR TO GEORGE W. SWIFT, J R., INC, 0]? BORDEN TOWN, JERSEY, A CORPORATION OF NEW JERSEY WEB-CUTTING MACHINE Application filed November 30, 1928. Serial No. 322,936.

This machine relates more especially to machines for cutting successive portions of substantially equal length from a continuously moving web which may be delivered thereto at various diflerent speeds. In machines of this character wherein recurring operations of the cutting mechanism for severing successive portions of substantially the same length from a continuously moving web, are made under the control of means actuated by said'web, some means mustbe provided whereby any departure from coordination in action between the web-feeding and web-cut- 4 ting mechanisms due to changes in speed at which the machine is operated, may be compensated for. i

In my copending application Serial Number 301,041, which was filed in the United States Patent Oflice under dateof August 21, 1928, I have shown, described and claimed cutting mechanism operating upon a traveling web and wherein means are provided in and associated with the operating connections interposed between a web-actuated target and a clutch-controlling trip for variably timing the response of the web-cutting mechanism to the actuation of said target by the successive forwardly-presented edges of a continuously moving web.

The present invention has for its primary object to provide an improved construction for machines of this same general character wherby any departure from or deviation in the length of web that would be severed from a continuously moving web by reason of changes 1n speed at which the machme 1s operated, may be compensated for by varying the length of web extending between the webfeeding and web-cutting mechanisms at or about the time the cut is made.

One of the objects of my invention is to provide means of improved construction whereby a change in speed at which the machine is operated may be made effective automatically to reduce or increase the amounts of web which would otherwise be presented beyond the cutting knives at successive operations thereof due to variations in speed at which the machine is driven.

Specific objects of my invention will be understood from certain features of construction alluded to in the appended claims.

The drawings represent a. preferred embodiment of my invention. In said drawings:

Figure 1 is a side elevation of a web-cutting machine provided with my improved webcontrol mechanism.

Figure 2 is an enlarged top plan view of portions shown at the left in Figure 1.

Figure 3 is an enlarged vertical section at one side of the machine, said section corresponding to the line 33 of Figure 1.

Figure 4 is a transverse section on the line 44 of Figure 3.

Referring more particularly to the drawings, in the preferred embodiment of my invention shown therein, an electric motor 1, provided with a driving pulley 2. drives an endless belt 3 which operates a driven pulley 4, connected to the left-hand couple 5 of a Reeves variable drive similar to that shown and described in my above-identified copending application Serial No. 301,041. An endless belt 6 connects the left-hand couple 5 of the Reeves drive to the right-hand couple 7 thereof, the latter couple operating through an endless belt 8 to drive a pulley 9 which is keyed to a power shaft 10. Keyed to the power shaft 10 is a bevel pinion 11 which meshes into a bcvel gear 12 carried by a longitudinal shaft 13. As shown in Figure 1, the longitudinal shaft 13 carries a bevel pinion 14 which meshes with a bevel gear 15, said bevel gear 15 being keyed to a transverse shaft which carries a spur pinion 16. The spur pinion 16 drives a large spur gear 17 which is keyed to a lower feed shaft 18. Keyed to the lower feed shaft 18 is a spur gear 19 which meshes with and drives a spur gear 20 keyed to an upper feed shaft 21. The feed shafts 18 and 21'are thus rotated in unison to drive lower and upper endless feed belts 22 and 23 which are adapted to deliver a continuous web 24 to the cutting mechanism shown at the left of Figure 1. Keyed to the transverse shaft 10 at the-far side of the machine is a spur pinion 25 (shown in broken lines in Figure 1). The spur pinion 25 meshes into a larger spur gear 26 keyed to a transverse shaft 27. The shaft 27 also carries a spur gear 28 which meshes into a large spur gear 29 journaled on a stud 30.

mediately behind the spur gear 31, as shown in Figure 1, is a spur gear 33 which drives a spur gear 34 keyed to the upper cutter shaft 35. In order to vary the distance traveled and the amount of web extending between feed belts 22 and 23 to the cutting mechanism, a variably positioned guide roller 36 is disposed in the path of said web and adapted by its upward and downward movements to vary the length of the web extending between feed belts 22 and 23 and the cutter blades (not shown) mounted on the lower and

upper cutter shafts

32 and 35. Interposed between the guide roller 36 and the

cutter shafts

32 and 35 are two pairs of guide rollers 37 and 38 which insure the proper delivery of the web-to the cutters, said guide rollers having their. opposite ends journaled in laterally-spaced bracket-frames of which one is indicated by the reference numeral 39.

Referring to Figures 1 and 2, on either side of the machine, the rotary gear 34 on upper cutter shaft 35 carries a cam plate 40 which operates on a cam roller 41 journaled in the outer end of a cam arm 42. The cam arm 42' serves to operate curved pressure arms 43, said cam and pressure arms 42 and 43 being oscillatable together about the axis of a transverse shaft 44. Oscillatably mounted upon the shaft 44 are. laterally-spaced arms 45 in which is journaled a shaft 47 which carries the guide roller 36. Interposed between an enlarged outer end 48 of each pressure arm 43 and an intermediate enlargement 49 of the roller-supporting arm 45, is a compression spring 50 which is coiled about a spring rod 51, said spring rod being slidable freely through the enlargement 49 and having a nut 52'threaded'to its upper end for adjustmg the tension of said spring 50. As shown 1n Figure 3, the outer ends of roller shaft 47 pro ect outwardly over vertically-reciprocable stop bars 53 which are slidably mounted in spaced guides 54. Intermediately of its ends each of said stop rods is provided with a rack 55. A gear pinion 56 meshes into the rack 55, said gear pinion being secured to one end of a stub shaft 57 which carries at its other end-a bevel pinion 58. The bevel pinion 58 meshes into another bevel pinion 59 keyed to the upper end of a shaft 60, the lower end of the shaft 60 being provided with a worm gear ,61 driven by a worm 62 on the forward end of a shaft 63. As shown in Figure 1, the shaft 63 carries at its rear end a bevel gear 64 which meshes with a siml lar bevel gear (not shown) on a shaft 65 which extends across the machine and is provided with similar connections onthe-other side of the machine. On the near end of shaft 65, according to Figure 1, is a bevel gear 66 which meshes with a bevel gear 67 on the lower end of a vertical shaft 68. The shaft 68 is geared to a horizontal shaft 69 which is provided with a hand wheel 70 for impartmg relative axial adjustments to the members of couples 5 and 7 of the variable speed drive which adjustments serve to change the operating speeds of the machine.

It will be understood from the foregoing description that as the web 24 passes between the normally

stationary cutter shafts

32 and 35, its forward end-will eventually operate a trip which permits an automatic operation of the clutch on lower cutter shaft 32 said clutch operating to connect up the gear 31 with lower cutter shaft 32. The operation of the cutting mechanism which follows is accompanied or preceded by a movement of the cam 40 from under cam roller 41, which permits a counter-clockwise movement of cam-arm 42 and pressure arm 43 which serves to lift the roll supporting arms 45 by means of the enlarged head 51 of bolt 51 which is brought into engagement with the enlargement 49 of arm 45. By means of this movement more or less compensation in the length of web released to the cutter-mechanism is made to depend upon the speed at which the machine is being operated. Thus, a shortened interval within which the cutters move from rest to cutting position due to an increased speed of operation, may be compensated for by a correspondingly increased length of web supplied thereto.

I claim 1. The combination with web-cutting mechanism and mechanism' for feeding a web thereto, said mechanisms being adapted to be cooperatively operated at different speeds, of means variable with changes in speed of said mechanisms for varying the amount of web extending between the web-feeding and webcutting mechanisms.

2. The combination with web-cutting mechanism, of mechanism for feeding a web thereto, a variable speed drive for continuously driving said web-feeding and webcutting mechanisms, and means operated by changes in speed of the variable speed drive for varying "the amount of web extending between the web-feeding and web-cutting mechanisms.

3. The combination with web-cutting mechanism and mechanism for feeding a web thereto over a normal path, of means oper-' 4. The combination with web-cutting mech- 7 the combination of web-controlled cutting mechanism, web-feeding mechanism. a webdeflecting member arranged between said web-feeding and web-cutting mechanisms, means for changing the speed of said mechanisms, and means operated by said speedchanging means for controllingthe movements of said web-deflecting member.

6. In amachine of the character described, the combination of web-controlled cutting mechanism, web-feeding mechanism, variable speed driving means connected to said mechanisms, a web deflecting member arranged between said web-feeding and web-cutting mechanism, means yieldably pressing said web-deflecting member across and beyond the normal direct path between said webfeeding and web-cutting mechanisms, and means movable by changes of speed of said variable speed driving means for limiting the web-deflecting movement of said member.

7. In a machine of the character described, the combination of web-controlled cutting mechanism, web-feeding'mec'hanism, variable speed driving means connected to said cutting means, and means responsive to said speed and web-feeding mechanisms. a web-deflecting member'movable across the normal path of said web between said web-feeding and web-cutting mechanisms, means for changingihe speed of said variable speed driving changing means for controlling the displacement of said web-deflecting member.

8. In a machine of the character described,

the combination of web-controlled cutting mechanism, web-feeding mechanism, vari; able speed driving means connected to said mechanisms, a web-deflecting member for varying the length of the path over which the web travels between said web-feeding andweb-cutting mechanisms, and means responsive to speed-changes in said variable speed said variable speed drivemechanism and said limiting means.

10. In a machme of the character described,

the combination withweb-c'ontrolled clutch:

operated cutter-shafts,.of web-feeding mechanism for feeding a web continuously between said. cutter shafts, a web-deflecting roller movable by the operation of said cutter connections between said variable speed drive mechanism and said reciprocable bar.

11. In a machine of the character described, the combination with a web-controlled clutch-operated lower cutter-shaft,

feeding mechanism for feeding a web between said cutter shafts, a web-deflecting roller movable by said upper cutter shaft for lengthening and shortening the path of said web in its movement from said feeding mechanism to said cutter shafts, variable speed drive mechanism connected to said web feeding mechanism, a movable stop for limiting the movement of said web-deflecting roller, and operating connections under the control of said variable speed drive mechanism for moving said stop.

12. In a machine of the character de scribed, the combination with cooperating cutter-shafts, of intermeshing gears mounted on said shafts, web-feeding mechanism for feeding a web continuously between said cutter shafts, a web-deflecting roller movable about an axis, a cam-arm for moving said roller, a cam mounted on one of said gears for operating said cam arm, variable speed drive mechanism connected to said webfeeding mechanism, a reciprocable bar for controlling the movement of said web-deflecting roller, and operating connections between said variable s eed drive mechanism and said reciprocable ar.

13. In 'a machine of the character described, the combination of normally stationary cutter mechanism operata-ble periodically for severing successive portions from a continuous web, continuously operated web-feeding mechanism for feeding a web to said cutter-mechanism, a web-deflect ing roller adapted by the operation of said cutter-mechanism to be released from a position of maximum web-deflection in which it is held-by said cutter-mechanism at rest, an adjustable stop for predetermining the maximum web-deflection position of said roller, variable speed driving mechanism for said web-feeding mechanism and said cuttermechanism, means for adjusting said variable speed driving mechanism, and operating of an upper cutter shaft geared thereto, webconnections between said adjusting means and said adjustable stop.

14. In a machine of the character described, the combination with cutter mechanism operatable periodically, of web-feedin mechanism for continuously feeding a we to said cutter mechanism, a web-deflecting roller, supporting arms therefor movable about an axis, pressure arms coaxially mounted with respect to said web-deflecting roller supporting arms, a yieldable connection between said pressure and roll-su porting arms, a cam arm for operating sai pressure arms, a cam movable with said cutter mechanism and adapted at rest to normally hold said roller in web-deflecting position, a

reciprocable stop-bar for limiting the displacement of said roller, variable speed driving mechanism connected to said web-feeding mechanism and said cutter mechanism, means for adjusting said variable speed driving mechanism, and operating connections between said adjusting means and said re-' ciprocable stop-bar.

15. In a machine of the character de-e scribed, the combination of upper and lower cutter-shafts, said lower cutter-shaft bein periodically operatable by a web-controlle clutch connection, web-feeding mechanism for continuously feeding a web between said cutter-shafts, -a web-deflecting roller, su porting rock-arms therefor pressure roc arms coaxially mounted-with respect to said supporting rock-arms, a yieldable connection" between said pressure and roll-supporting arms, a cam arm foroscillating said pressure rock-arms, a cam revolvable' about the axis of said upper cutter-shaft, a cam-arm operated by said cam, a reciprocable stops bar for limiting the displacement of said roller, variable speed driving mechanism connected to said web-feeding mechanism and said clutch-driven lower cutter-shaft, means for adjusting said variable speed driving mechanism, and operating connections betweensaid adjusting means and said replacement of said webeflecting roller.

17. In a machine of the character de-* scribed, the combination with normally statlonary web-cutting mechanism adapted to be operated periodically forsevering successive portions from a continuous web and'continuously-movable web-feeding mechanism for feeding a web to said web-cutting mechanism, of means under the control of said cuting mechanism and the web-cuttin mechanism an ter-mechanism for deflecting the web in its passage from said web-feeding mechanism to said web-cutting mechanism, said means being adapted by said web-cutting mechanism at rest to impart a variable degree of deflection from a direct path between said mechanisms, and means variable with the speed of the machine for predetermining the degree of web-deflection, said web-deflecting means being releasable by the operation of said cutter mechanism for relieving said web.

18. In a machine of the character described, the combination of web-cutting mechanism, web-feedin mechanism, variable speed means for driving said web-cutting mechanism, means for adjusting the speed of said variable speed means, and means under the control of said adjusting means for variably displacing the web from its direct path extending between .the web-feeding mechanism and the web-cutting mechanism.

19. In a machine of the character described, ,the combination of web-cutting mechanism, web -feeding mechanism, variable speed meansfor driving said web-cutting and said web-feeding mechanisms, means for adjusting the speed of said variable speed means, means adjustable by the variable speed adjusting means for variably displacing the web extending between the web-feedmechanism, and means actuated by the we -cuttin mechanism for releasing the displaced we durin the cutting operation.

' 20. n a machine of the character described, the combination of web-cutting mechanism, web-feeding mechanism, variable speed means for driving said web-cutting and said web-feeding mechanisms,

means for adjusting the speed of said variable speed means, means actuated by the web-cutting mechanism for yieldably displacing the web extendin between the web-feeding the web-cutting mechanism, and means adjustable by the variable speed adjusting means for variably limiting the displacement of said web.

21. In a machine of the character described, the combination of a one-revolution cam, periodic web-cutting mechanism operable once for each revolution of said cam, web-feeding mechanism for continuously feedin a web to said web-cutting mechanism, variable-speed driving mechanism for drivinv the machine, a web-deflecting roll movable transversely to the direct path of the web between said web-feeding and web-cutting mechanisms, means operated by said cam for yieldably movin said web-deflectin roll, and means adjustab e with the speed 0% said variable-s eed driving mechanism for limitin% the yieldable displacement of said webde ecting roll.

22. In a machine of the character described, the combination of a one-revolution cam, periodic web-cutting mechanism operable once for each revolution of said cam, web-feeding mechanism for continuously feeding a web to said web-cutting mechanism, variable-speed driving mechanism connected to said web-feeding and web-cutting mechanisms, means for adjusting the speed of said variable-speed driving mechanism, a web-defleeting roll movable transversely to the direct path of the web between said web-feeding and web-cutting mechanisms, a camlever operated by said cam and yieldably connected to said web-deflecting roll, and means operatably connected to and adjusted by the variable speed adjusting means for limiting theyieldable displacement of said web-defleeting r011.

23. In a machine of the character described, the combination of web-cutting mechanism, Web-feeding mechanism for feeding a web to said webcutting mechanism, variable-speed driving mechanism connected to said web-feedin and Web-cuttin mechanisms, a web-de ecting roll mova le transversely to the direct path of the web between said web-feeding and web-cutting mechanisms, a cam-operated lever, yieldably connected to said web-deflecting roll, an axiallymovable stop-bar for limitin the yieldable displacement of said webeflecting roll, means for adjusting the speed of said variable-speed driving mechanism, and operating connections between said speed-adjusting means and said stop-bar.

GEORGE W. SWIFT, JR.