US1085356A - Cutting mechanism. - Google Patents

Description

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T. E. RAFFEL.

CUTTING TviECHANISM.

APPLICATION FILED 00121 m2.

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T. E. RAFFEL.

(JU'ITING MECHANISM.

APPLICATION nun 0015,1912v 1,085,856 Patented Jan. 27, 1914.

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TOBIAS E. RAIEFEL OF NEW' YORK, N. Y., ASSIGNOR TO PAPER WORKING MACHINES C0,, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Jan. 27,191'1t.

Original application filed February 2, 1912, Serial No. 674.976. Divided and this application filed October 5, 1912. Serial No. 724,039.

My invention relates to a cutting mechanism for a machine for manufacturing double faced corrugated board, and this application is a division of my original application, Serial No. 674,976 filed February 2, 1912 Patent No. 1,050,292 of January 14th. 1913. v

The object of my invention is to provide a cutting mechanism of novel construction and arrangement of parts for automatically cutting the web into sheets of any desired length and delivering the sheets from the machine. y

In the accompanying drawings illustrat ing my invention, Figure lis a side eleva tion of the cutting mechanism; Fig. 2 is a detailed elevation of the cutter actuating cam; Fig. 3 is a front elevation of the knife; Fig. f is a top plan view of the delivery bed: Fig. 5 is an end elevation of the same; Fig. 6 is a section in elevation through the cutter controlling clutch; F ig. 7 is a detailed elevation of the friction disk; Fig. 8 is an end elevation of the feeding. mechanism clutch. and Fig. 9 is a side elevation partly in section of the same.

After the" board (1) leaves the machine it is carried beyond the cutter (17) on to the delivery bed, which is arranged to support the board while it is being cut, and then to automatically deliver the cut sheets from the machine. To this end I provide a pair of parallel supports (18), spaced apart a distance slightly less than the width of the board, each of which is carried on the two adjustable arms (19) mounted for endwise movement in a frame (20). By adjusting the position of the arms (.19) the distance between the supports (18) may be varied to accommodate boards of different width.

Each of the movable arms ('19) is provided with a rack (21) on which is mounted a pinion he pinions of the two arms of each support- (18) are connected by a suitable spindle (23) so as to rotate together. It will be seen that in ordeg to separate or their original position.

bring together the supports (18) it is necessary to cause the opposed pairs of pinions to rotate in opposite directions. This may be accomplished by securing to the spindles (23) the lever arms (24;), which are inclined towardeach other as seen in Fig. 6, and are connected by means of the rods (25) to the rear ends of the rocker arms (26), the forward ends of which bear upon the cams (27)fixed to the rotatable shaft (28) of the cutter actuating mechanism. These cams (27) are arranged to tilt the rocker arms (26) immediately after movable cutter blade (29) has descended, and thereby cause the supports (18) to separate, thus allowing. the cut sheet to drop from the machine, after which the supports are returned to To this end it is necessary to have the position of the cams (27) lag slightly behind the cam (34) which actuatcs the cutter.,

The cutter mechanism comprises a stationary blade (17) and a vertically reciprocating blade (29) disposed transversely of the machine. I prefer to have the movableblade (29) formed with adouble beveled edge as shown in Fig. 3 so that in descend ing it will first engage the board at its edges and out toward the center, thus holding the board in position during the operation. The blade is secured to the rear end of a pivoted beam (3O) the forward end of which is reciprocated by a pitman (31) having a pin (32) which works in an eccentric groove (33) formed in thecam (34) fixed to the rotatable shaft "(28). The shaft (28) is normally at rest and the rotation thereof is controlled by a suitable friction clutch which is arranged to be thrown. by means of a tripping device automatically actuated by the edge of the board as it advances in the machine.

The friction clutch, as preferably constructed, comprises a toothed flanged disk (35) which is loosely carried on the shaft (28) and meshes with a pinion (36) fastoned to the main driving shaft of the ma chine. The disk (35) is held in surface contact with a friction disk (37), keyed to the shaft (28). by means of a spring (38) coiled about the shaft and acting against a fixed collar (39).

The friction disk (37) is normally held against rotation by the engagement of the the disk (37).

with the forprojecting pin or stud (40) (41) of the ward end of the rocker arm tripping device. the pin (40) is released the friction disk (37) will be free to rotate with its companion driven disk (35). As the shaft (28) is fixed to the disk (37) it will also be caused to rotate, and through the cams and (34) carried on said shaft it will operate the delivery The clutch tripping device comprises a push plate (42) which is adjust-ably suspended, in the. path of travel of the board, from a horizontal bar (43) conveniently supported for endwise movement above and approximately parallel to the longitudinal center line of the machine. As the advancing edge of the board strikes the plate it will push the latter slightly rearwardly and the motion transmitted through the bar the bell crank and the connecting rod (45) will depress the forward end of the rocker arm (41) thereby releasing it from engagement with the pin The length of the cut sheets may be varied at will by simply adjusting the position of the measuring pan toward or away from the cutter.

A cam plate (46) is secured to the inner face of the disk (37) immediately behind the pin (40). This cam is adapted to en gage the free end of the rocker arm (41) after it is disengaged from the pin (49) and to further depress it so as to "cause the pan (42) to be shifted slightly rearwardly in order to make allowance for the thickness-of the cutting blade and thereby prevent the sheet from buckling while it is being cut.

It is desirable that the feeding rolls (16) should come to rest while the board is being out. To this end I provide a suitable friction clutch which is arranged to automatically throw the feeding mechanism out of gear with the power shaft during the cutting operation. A chain driven from a sprocket (47 fixed to the power shaft continuously rotates the sprocket (48) and its attached friction shell or drum (49), both of which turn loosely on the shaft (50). A split ring (51), disposed within the flange of the drum (49), and keyed to the shaft (50) is normally maintained in expanded position so as to rotate with the said drum, by engagement of the expanding wedge or lever withthe projecting stud (53), fixed to the movable member (54) which slides upon a key or feather fastened to the said shaft (50). A lever arm (55),secured at its ends respectively to the pitman (31) and i the movable member (54) is arranged for actuation by the upward movement of the pitman to slide the movable member out of engagement with the fixed parts of the clutch and thereby make the connection be- It will be seen that when bed and cutter mechanism.

(40) and freeing tween the power shaft and the feeding mechanism inoperative during the cutting operation, after which, by a downward movement of the pitman, the clutch is again set in operative position.

In the foregoing specificationI have described the preferred form and mode of operation of my machine, but it will be apparent to those skilled in the art that various,

modifications may be made in the arrangement and construction of the )arts thereof without departing from the splrit and scope of my invention.

What I claim is:

1. In a cutting mechanism, the combination of a driving'shaft, a mechanism for feeding apaper web driven thereby, a pivoted cutter bar having a vertically movable cutter blade secured to one end and a pitman to the other, a cutter shaft, an eccentric on said shaft for actuating the pitman to reciprocate the cutter, a push plate adjustably suspended in the path of travel of the web, a clutch for connecting the cutter shaft to the driving shaft, and connections between the push plate and the clutch operative upon displacement of the push plate to connect the cutter to the driving shaft.

2. In a cutting mechanism, the combination of a driving shaft, a mechanism for feeding a paper web ciprocating cutter, a pitman for reciprocating thecutter, a normally inactive cutter shaft carrying an eccentric adapted to actuate the pitman upon rotation of the shaft, a push plate adjustably suspended in the path of travel of the web, a clutch having a friction member fastened to the cutter shaft, a

. trip normally restraining the rotation of said friction member, connections between the push plate and the trip operative upon driven thereby, a redisplacement of the push plate to release said' friction member, and means for causing the push plate to recede from the web,

during the cutting operation so as to prevent buckling of the sheet.

3. In a cutting mechanism, the combination of a driving shaft, a mechanism for feeding a'paper web driven thereby, a reciprocating cutter, means for automatically actuating the cutter to sever sheets of de sired lengths from the web, a clutch normally connecting the feeding mechanism to the driving shaft, and means actuated by the movement of the cutter to automatically disconnect the feeding mechanism while the sheet is being cut.

4. In a cutting mechanism, the combination of means for feeding a paper web, a normally. inactive vertically reclprocating cutter, means havmg a member disposed in the path -of travel of the web for setting the cutting mechanism into action to cut a sheet of predetermined length therefrom, two rods normally supporting the web under the lateral edges and mounted to moye In testimony whereof I have signed this toward end away from each other in a, specification in the presence of two sublongitudlnal plane, and means coiiperative scribing Witnesses.

With the cutter operating mechanism and TOBIAS E. RAFF EL. 5 timed to separate the Web supports after Witnesses:

the descent of the cutter to deliver the out LESTER F. DI'ITENHOEFER,

sheet. LESTER FLORsEmIM.

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