SU1449001A3 - Arrangement for perforating sheet material and removing waste - Google Patents

Abstract

This invention relates to a device for perforating sheet material and removing waste. Purpose A of the Invention — Reliability of Waste Disposal The device contains a pair of rolls (B) 1 and 2, Punches 4 are located at B 1, and B holes are stepped at B 2. The hole level is located at the periphery of B 2 and serves as a matrix. 9 and their associated powders, pushing waste from it. Their movement is made by rotating B 2 around a stationary cam. Part B 2 encloses the casing (K) 15, the cavities between B 2 and K 15 and the opening communicate with the source of vacuum generation. When the piston moves to the axis B 2, a vacuum is created in the hole. When B 2 is rotated, the hole with the piston falls into the area of location K 15. The waste is pushed out of the hole and is removed through the pipeline 17 2 Cp, f-ly, 5 sludge. WITH

Description

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This invention relates to a device for perforating sheet material and removing waste.

The purpose of the invention is to improve the reliability of waste disposal.

In Fig "1 shows the proposed device, side view; Fig. 2 shows rolls, a cross-section, a piston for waste disposal and a mechanism for moving it; on FIGS - 5 - sequence of movement of the rad.

The device contains rolls 1 and 2, between which machined material 3 is placed. On the periphery of roll 1, punches 4 are installed. On roller 2 there are stepped holes. Steps 5 serve as matrices. In addition, the holes have steps 6–8. Stepped rods 9 with pistons 10 are used in the openings for removing waste punching. At the end of each rod 9, facing the axis of the roller bearing it 2, a roller 11 is located. In the cavity of roller 2, a cam 12 is mounted. On this cam there is a dorsus, fixedly mounted. When the roller 2 rotates, the rollers 11 contact this track. The rods 9 have flanges 13 placed in steps 7. Between each flange 13 and the bottom of the hole step 7, a spiral spring 14 пруж is installed. The lower part of the roll 2 is covered by a casing 15. 15 via conduit 16 is connected to a vacuum source (not shown). One or several nozzles 17 directed tangentially to the outer surface of the roll 2 are mounted in the casing 15.

To ensure the tightness between the punching waste and the walls of the matrix stage 5 of the hole, this stage may have a conical part

current 18 (figure 5).

The perforated sheet material may be a web of laminate intended

for making disposable packaging bags in which suction tubes can be installed

The device works as follows

in a way.

When punching holes, the punch 4 interacts with the cutting edges of the matrix stage 5 holes and pushes waste until the bottom part of the waste does not lie to the bottom

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matrix stage 5 orifice The cross section of this stage is larger than the cross section of the next stage 6. The piston 10 moving reciprocating in the bore of the roll 2 alternately takes one of the three positions shown in FIGS. 3-5. These movements are carried out under the influence of the spring 14, which presses the roller 11 to the fixed track of the cam 12. These tracks are made so that when the piston 10 moves in the direction from the processed material 3 to the axis of the roll 2, the punching waste goes into the step 5 and forms a seal relative to stage 5 o. At the same time, the movement of the piston 10 to the axis of the roller 2 leads to the formation of a vacuum under the piston 10, i.e. in the cavity of the matrix stage 5, which is between the piston 10 and the waste. The vacuum is maintained and subsequently It increases as a result of the corresponding run of the cam 12 during about a quarter of a turn of the roll 2 from the coaxial arrangement of the piston 10 and the punch 4, when the piston 10 is in a position (perpendicular to the shown figure 2) horizontal, the hole in which the rod 9 is placed and the piston 10 enters the zone covered by the casing 15 and the waste is pushed out of the matrix stage 5 of the hole (Fig. 4) to be removed through the pipe 16. In this case, the piston moves in the direction from the axis of the roller 2 to the periphery. In order to ensure the removal of waste, if for some reason it did not occur, for example, if the waste has stuck, an air stream is directed through the nozzles 17 against the direction of movement of the roll 2 and the waste is removed.

After removing the waste from the step 5, the holes with the step 5, with continued rotation of the roll 2, return to the upper vertical position, and the piston 10 occupies an intermediate position in the hole (Fig. 5). The cam 12 then displaces the piston 10 to an intermediate position, where the latter is at the same level or slightly below the transition from the matrix stage 3 to the hole stage 6, thereby withdrawing from the next hole

14A matrix will be able to re-enter in version 5,

The punch 4 and the matrix stages 5 holes can have a different shape, determined by the shape of the punched holes. The pistons 10 may also have a different shape and may be provided with sealing elements.

The use of the invention improves the reliability of waste disposal.

Claims (3)

1. A device for perforating sheet material and removing waste containing a pair of rollers, in one of which stepped holes are filled and installed in them are stepped pistons for removing waste that are guided by part of the surfaces of the holes and equipped with a moving mechanism including a cam. 4А9001 ten 15 20 located in the roll cavity, due to the fact that, in order to increase the reliability of waste disposal, it is equipped with waste extraction means, the stepped holes are connected to the vacuum source, the step of each stepped hole, facing the outer surface of the roll, has a cross section with an area larger than the step area guiding the piston. 2. A pop device, 1, characterized in that a cam track is made on a cam surface fixedly mounted, and each piston is equipped with a roller arranged to interact with this track. 3. The device according to claim 1, about tl and the fact that the suction means is placed along the part of the periphery of the roll carrying the pistons. 12 2 five Fi.by