SU1219381A1 - Device for cross cutting of polymeric materials - Google Patents

Description

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The invention relates to equipment for the tire, rubber industry, as well as the building materials industry for cutting sheet and roll materials, for example, in the manufacture of linoleum, textile and rubberized metal cord.

The aim of the invention is to increase reliability in operation.

FIG. Figure 1 shows the machine, a continuous section (with the pneumatic cylinder stem retracted); in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 shows the node I in FIG. one.

The machine for cutting sheet and roll materials contains a frame 1 on which two side walls 2 are installed and a fixed beam 3 installed between them, a carriage 4 and a beam 5 with a driving pneumatic cylinder p-6. On a fixed beam 3 bolts 7 fix a flat knife 8, and on the carriage 4 mounted curved movable knife 9, the spring-loaded clamp 10 and the stop 11; between the latter, a series of springs 12 is installed. A fixed beam 13 with two spring-loaded rollers 14 is attached to the side walls 2 above the fixed beam 3. The distance K between the clamp 10 and the beam 13 is chosen so that in total with the height of the spring 12 it does not exceeded the magnitude of the working stroke of the pneumatic cylinder B. The stationary blade bar 3 is exposed in the slots of the sidewalls 2 so that the cutting edges of the knives 8 and 9 are in the same plane (cutting plane), and the edge of the curvilinear knife 9 must go on the knife 8 (according to all w When the pneumatic cylinder rod is retracted, the pressure bar 13 is also exposed, its working face must be parallel to the working face of the pressure 10. Bbmie of the pressure beam 13 is located the air manifold 15 connected with a series of flexible pipelines 16. The carriage 4 is mounted on guides 17 running wheels 18 mounted on eccentric axles xx 19, and supported from below by roller guides 20, the latter being able to move upwards or downwards in the grooves when aligning

4 with knife 9 in the cutting plane.

To eliminate the play of the carriage 4 in the horizontal plane, the eccentric axes 19 of the traveling wheels 18 are rotated clockwise or counterclockwise until the wheels 18 are fully pressed against the guides 17 and fixed with lock nuts. Spring tension 10 ost10 is pushed onto the pads 21 fastened to the carriage 4. The latter is connected to the pneumatic cylinder 6 by means of a pusher 22 mounted between them, the gap M between the pusher and

15, the carriage must be less than the gap H so that the pushing force of the pneumatic cylinder b is distributed across the entire width of the carriage 4.

B top of the machine as well

20, deflector plates 23 are installed under the fixed blade beam 3. At the bottom of the machine, between the sidewalls 2, guide 24 and deflecting rollers 25 are fixed.

25 Between the knives 8 and 9, roll material 26 passes around the jKOB 24 and 25.

The machine works as follows. Compressed air is supplied from the shop floor.

30 through the pneumatic valve in the piston cavity of the pneumatic cylinder 6. The rod of the latter through the pusher 22 transmits the pushing force to the carriage 4, which moves in the horizontal plane along the direction 35

40

17 and roller guides 20.

Since the distance K (Fig. 1) is obviously less than the stroke of the pneumatic cylinder to the height of the spring 12 during working deformation, the roll material 26 before the start of cutting will be fixed between the spring-loaded clamp 10 and the pressure beam 13 with a force caused by the characteristic of the springs 12. Moving the curvilinear movable the knife 9 with respect to the fixed knife 8 occurs at constant pressing of the first to the second pair of spring-loaded rollers, and the pressing force is determined by the characteristics of the spring of the rollers and can be adjusted. The rollers 14 allow the working surfaces of the blades 8 and 9 to be kept in the cutting plane or, by adjusting the height of the springs, to withstand

55 there is a sufficiently small gap between them, as well as choosing gaps resulting from the natural wear of the knives.

At the end of the cutting, the web material 26 can be glued (depending on its physical and mechanical properties) to the working surface of the pressure bar 13. Therefore, the exhausted compressed air from the nepoi cavity of the pneumatic cylinder 6 when pressure is applied to the rod cavity of the cylinder (return of the knife 9 to the original position) is directed to the collector 15, and from there along flexible pipes 16 and drilling in the beam 13 to the place of its contact with the rolled material.

The carriage with a movable knife is set in a horizontal plane by turning the eccentric axes of the traveling wheels; this completely eliminates the play of the carriage in this plane and its occurrence during the operation of the machine.

The carriage with a movable knife moves in a working plane along a roller guide. In this case, the contacting surfaces practically do not wear out, are excluded as 12.

ten

193814

Clinic and backlash carriage in a vertical plane.

The movable and fixed knives are in constant contact (even 5 when the uttoKe pneumatic cylinder is retracted), while they are pressed one to the other by working planes with a pair of spring-loaded rollers with an adjustable force. In this case, it is possible to change the mutual position of the main and fixed knives by adjusting the height of the springs of the rollers 14 and the position of the roller guides 20, followed by their fixation when the clearance between the knives is reached.

The design of the proposed knife device (along with the rigid mounting of the carriage to the pneumatic cylinder) avoids bending the movable knife in a vertical plane, keeping the working surfaces of the knives in the plane of cutting (or spreading them to the required clearance and fixing in this position) and thus cutting any roll materials, including reinforced metal.

15

20

25

/ 7 20

FIG. 2

0tra5 tandem cylindrical dozduk

FIG.

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Bb

FIG.

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Editor A. Shandor

Compiled by E. Mikhailova

Tehred c. Kadar Proofreader V. Sinitska

Order 1205/23 Circulation 640 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, Proektna St., 4

FIG 5

Claims (2)

1. DEVICE FOR TRANSVERSE CUTTING OF POLYMERIC MATERIALS, which contains fixed and movable knife beams installed on the frame with flat knives fixed to them, the latter being made in the form of a carriage mounted on axles mounted on the axles of the wheels and in the roller guides with its drive back and forth translational movement, characterized in that, in order to increase reliability in operation, it is equipped with a clamping beam and spring-loaded rollers for constant pressing of the knife of the movable beam to the knife stationary, and the axis running wheels are made in the form of eccentrics and mounted perpendicular to the plane of the knife. 2. The device according to p. 1, characterized in that the carriage is equipped with a spring-loaded clip for fixing the material, mounted parallel to the clamping beam. I8S6IZ1 ⁰⁰ AS