SU442867A1 - Device for the manufacture of products by the method of reverse pressing - Google Patents

Description

one

The invention relates to the field of metal rolling.

According to the main author. St. No. 193427 a device for manufacturing products by the method of reverse pressing is known, which contains a container with a ram with a die entering into it and mounted on a pad placed on the main plunger of the press, a stopper that locks the end of the container from the side opposite the ramp of the ramp.

However, in the manufacture of products with a relatively small cross-section using a known device, piercing rods having a small diameter and a greater length lose their resistance to buckling from the press-through piercing force, especially when several products are made simultaneously.

In order to ensure the durability of piercing rods in the manufacture of products with a relatively small cross section, a support disk with splines is additionally installed in the cork of the device proposed to secure piercing rods in it, a locking sleeve with splined section adjacent to the main plunger located in the pillow, and in the main plunger the power cylinder is mounted with a rod, ne2

reducing the force on the bearing disc for eri, moving in the area of the locking sleeve free of the splines.

The process of firmware press residue and pushing the product through the matrix is carried out in two stages.

The first stage is the flashing of the press residue by stitches not extended to their full length, but by an amount that provides the necessary stability to the longitudinal bending when flashing the press residue, but sufficient for carrying out the flashing operation.

The second stage, the ejection of products from the matrix, is carried out by the same piercing rods extended to their full length.

FIG. 1 shows the device at the time of flashing the press residue, a longitudinal section; in fig. 2 - device at the time of pushing the product.

The device consists of a stopper 1, piercing rods 2, which have a pocket at the front end for the flow of metal of a press residue, a support disk 3 with external slits, in which piercing rods are fixed, fixing sleeves 4 with internal slots made on a part of the sleeve length, pneumatic cylinder 5, which rotates the locking sleeve to the spline engagement step and locks the bearing disc and the piercing

the rods in the position for piercing the pressure chamber, the second pneumatic cylinder 6, extending the support disk and piercing rods into the position for pushing the products out of the die, and the pillow 7, where all the device parts are mounted and drilled to supply pipes to the pneumatic cylinders.

The position of the parts of the device at the moment of flashing the press residue 8 is shown in FIG. 1. The piercing rods 2 and the bearing disc 3 are extended to the length of the inner slits of the locking sleeve 4.

When pushing through the matrix 9 of the products 10, the piercing rods 2 with the help of the pneumatic cylinder 6 are pushed to the extreme right position at full length.

At the end of the pressing and at the exit of the die 9 from the container sleeve, the main plunger of the press with the cushion 7 fixed in it and the stopper 1 moves back. At the same time, the piercing rods 2 are pulled out of the cork by means of the pneumatic cylinder 6 by an amount larger than the length of the splines of the locking sleeve, thereby allowing the latter to turn to the spline engagement step by means of the pneumatic cylinder 5 and lock the disk 3 and with it the piercing 2 at the length , providing only the rest of the press residue 8 stroke of the main plunger forward. The position of the device at the time of flashing is shown in FIG. one.

At the end of the press-firmware flashing by turning on the pneumatic cylinder 6, the piercing bars are extended to their full length, pushing the pressed products 10 through the matrix 9. Then the pressing cycle is repeated.

Subject invention

A device for the manufacture of products by the method of reverse pressing according to the author. St. No. 193427, characterized in that, in order to ensure the durability of the piercing rods in the manufacture of products with a relatively small cross section, a support disk with slots is additionally installed in the plug to secure the piercing rods in it, a locking sleeve is located in the cushion with a slotted section adjacent to the main the plunger and interacting with the backing splines, and in the main

The plunger is mounted to a power cylinder with a rod acting on the supporting disk to move it in the area of the fixing sleeve, free from the splines.

FIG. i 5 J bozdi-. Compressed 8years