SU422623A1 - DEVICE FOR CUTTING PLANTS FROM SHEET NOLIMERARY MATERIALS - Google Patents

Description

one

A device is known for cutting blanks from sheet polymeric materials, for example, from a sheet rubber mixture, containing a fixed matrix and a punch that is movable from the spring-loaded drive.

A disadvantage of the known device is that it does not provide for the use of a movable pneumatic clamp in the punch, which does not provide simultaneous cutting of blanks from sheet material with duplication of preformed blanks.

The purpose of the invention is to combine the operations of cutting blanks and piece duplicating them with preformed blanks-achieved by the fact that the punch in the device is made movable from a hammer connected with a spring-loaded drive with hemispherical working surfaces, periodically interacting with the cutting edges of the die, and displacements from a pneumatic cylinder of a spring-loaded ejector — a blower of blanking blanks with preformed blanks.

In addition, in order to ensure the stacking of duplicate blanks on the packaging mite, the matrix is mounted on a mounting plate with a gap to move the packing tape.

FIG. 1 shows the proposed device, a general view; pas figs. 2 - the device is in position before cutting the workpiece from the material; in fig. 3 shows the device in position after cutting the workpiece and duplicating it with the packing tape.

The device consists of a mounting plate 1, on which the matrix 2 is fixed, is made with cutting edges along the cutting hole

blanks, using screws 3 and gaskets 4 so that there is a gap between them needed to move the packing tape. The arrays 5 are mounted on the matrix, along which the percussion-cutting mechanism with a device for duplication can move from the primary cylinder 6.

The shock-cutting mechanism of the device consists of a housing 7, in which is located

punch 8. made movable, having a travel stop in the form of two half-rings 9. The drummer 10 interacts with the punch 8, the movement of which is limited by the stop 11. The drummer 10 presses the pressure bar 12 on top of the piston 12. It is installed between the drummer 10 and the start 13. washer 14, which under the action of spring 5 tends to occupy an eccentric nozhodenpe relative to shank of poopsop 8

The duplicating mechanism of the device consists of a piston 13, a rod 16, a nut 17 screwed on a doubler ejector 18, and a spring 19.

On top of the housing 7 is closed by a cover 20 with a gasket 21 and fitting 22.

The device works as follows.

A packing tape 23 (e.g., polyethylene) is placed on the plate 1. The punching mechanism, together with the backup mechanism and the hammer 10, is lifted up by means of a pneumatic cylinder 6. The punch 8, remaining in place, slides relative to the housing 7, resting on the half rings 9. At the same time, going beyond the shank of the punch 8, the washer 14 under the action of the spring 15 is displaced all the way into the wall of the housing 7 by the surface A and partially covers the hole, which moves the shank of the link 8.

The gap formed between the slab of matrix 2 and the punch 8 is placed by a continuous band 24 of material being cut, for example an adhesive (rubber mixture based on natural rubber). On top of this material is placed an article 25, which should be applied with an adhesive. The dimensions of the product around the perimeter should be less than the cutting hole in the matrix 2 so that the protruding strip of adhesive with a width of 2-3 mm is formed at the perimeter of the cut blank.

For convenience and accuracy of laying the product on the adhesive, a removable template 26 can be used, which should be oriented relative to the cutting hole in the die 2 along the guides 5, and after the product is laid, the template is removed and the impact-cutting mechanism is lowered down. In this case, the punch 8 abuts through the adhesive with the working surface into the cutting edge of the orifice of the die 2, and the cutting edge is set therein so that the cutting edge

matrix 2 is in contact with the spherical surface of the punch 8.

Upon further lowering of the percussion-cutting mechanism, the shank of the noanson 8 rests on the shifted trigger washer 14 of the striker 10, compresses the spring 12, becomes platooned until the washer 14 moves the emphasis 11 to the initial position, while providing the INPUT of the needle of the 8 January shank drummer hole 10. Drummer 10 breaks down

with a platoon and with a force blow em on the punch 8,

which cuts the adhesive to the shape of the hole

in matrix 2.

Thereafter, compressed air is supplied through

the brush 22 into the cavity between the cap 20 and the piston 13. The piston is lowered down, compresses the springs 12 and 19, and the ejector 18 presses the cut adhesive with the product to the packing tape. Duplication of the product, adhesive and packing tape occurs.

P | redmet invention

1. Device for cutting blanks from sheet polymeric materials, for example from rubber sheet, containing a fixed matrix, made with cutting edges along the blanking hole of blanks, and a sleep mobile from the drive drive, characterized in that, in order to combine the operations of blanking blanks and single-piece duplicating them with preformed blanks, the punch is equipped with a movable

from a pneumatic spring drive with a hammer and made with a central hole for accommodating a spring-loaded Bytaulkivatel -.doubler moving from the pneumatic cylinder. 2. The device according to claim 1, characterized by

In order to ensure that the duplicate blanks are stacked on the packing tape, the matrix is mounted on the mounting plate with a gap to move the packing tape.

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