SU579219A1 - Device for rending edges of workpieces - Google Patents

Description

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The invention relates to the treatment of the edges of parts, mainly leather goods, namely, bending, and can be applied in light industry.

A device is known for folding edges, parts, preferably leather goods, containing a matrix with an elastic bending plate located inside it, having 1 central notch, a part laying plate, a top plate, a nonshaven pusher in the form of a figured punch, and a drive, {l .

A disadvantage of this device is a large number of replaceable parts: when processing different parts, it is necessary to change the matrix, junction, bending plate and plate for laying the part.

The purpose of the invention is to improve the operation of the device by reducing the number of interchangeable parts.

To do this, the actuator contains a pneumatic cylinder connected to the pneumatic valve, the matrix is attached to the pneumatic cylinder stem, and the upper plate has a channel made above the cut-out of the shaft: a side plate and connected to the pneumatic network. In addition, stove for laying

parts made of elastic material and connected to the bending plate.

Fig. 1 shows the proposed device, the general view in Fig. 2-5 of the circuit of the position of a part on different stages of the bend.

The device contains a matrix 1 with an elastic bending plate 2 installed inside it, a plate 3 for stacking the part, and an upper plate 4 supporting a spring-loaded pusher 5. The drive has a power pneumatic cylinder b. on the rod 7 of which the matrix 1 is fastened, the rod 8 of the valve 9 for controlling the compressed air is connected to it, having openings 10 and 11. A spring-loaded ejector 12 passes through the matrix 1, the push rod spring 5 being stiffer than the spring of the extractor 12.

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The top plate 4 has a channel 13, wedged over the cut-out 14 of the bending plate 2 and connected to the pneumatic cylinder 6.

The bending plate 2 consists of several layers of sponge rubber sheet, the plate 3 is made of an elastic material and is connected to the bending plate.

The matrix 1 has openings 15 for communication with the atmosphere.

Device; works as follows.

The detail 4 prepared for folding is set into the notch of the plate 3 and onto the ejector 12, which is in the upper position.

Under the piston of the power pneumatic cylinder biv valve 9 is supplied with compressed air. The rod 7 rises and raises the matrix 1. The part is clamped between the pusher 5 and the ejector 12 (Fig.2).

Upon further raising of the matrix 1, the part is pushed inside the matrix 1, while the edges of the part are located at an arbitrary angle of inclination (Fig. 3) Then the top plate 4 seals the bending plate 2, at which time the rod 8 of the valve 9 takes a position with a hole 10 and 11 communicates and compressed air enters the channel 13 of the plate 4. Under the action of the air, the edge of the part is at an angle of 90 (figure 4).

The air under the part is pushed through the holes 15 of the die 1.

As the die 1 is further raised, the compressed air supply is stopped, the bending plate 2 deforms, bends the edges of the part and sticks them (Fig. 5).

At the end of the folding and gluing of the child, the compressed air is introduced into the cavity above the piston of the pneumatic cylinder. B. The die 1 is returned to its original position, and the part is removed from the die 1 by means of the pusher 5.

For machining various parts, the folding plate 2 together with the plate 3 is molded.

Thus, the number of replacement parts of the device is significantly reduced, which makes it possible to improve the conditions of its operation.

Claims (2)

1. A device for bending the edges of parts, mainly leather goods, containing a matrix with an elastic bending plate located inside it, having a central notch, a plate for laying the part, an upper plate supporting the plunger, and an arbitrary feature that - device plowing by reducing the number of replaceable parts, the actuator contains a pneumatic cylinder connected to the pneumatic network, the matrix is fixed on the pneumatic cylinder rod, and the upper plate has a channel formed above the cutout bend ary plate and associated with pneumatic. 2. The device according to claim 1, characterized in that the plate for laying the part is made of an elastic material and is connected to the bending plate. Sources of information taken into account in the examination: 1. Copyright certificate USSR 150382, cl. At 68 Pi / 00, 1956.