SU1660844A1 - Powder-compacting device for the manufacture of articles - Google Patents

Abstract

The invention relates to powder metallurgy, in particular, to devices for pressing articles from powder. The aim of the invention is to increase productivity and enable automation of pressing. When relieving the pressing pressure, the wedge clamps 7 release the composite matrix 6

however, the spring-loaded stops 12, which interact with the stepped inclined sections 11 of the guide columns 10, are not able to hold the container 2, which is lowered onto the buffer 14 of the lower base 1, to release the product. Productivity is increased and press automation is enabled. 1 hp ff, 5 ill.

Description

The invention relates to powder metallurgy, in particular, equipment for pressing powder materials and can be used to obtain products of various configurations.

The purpose of the invention is to increase productivity and enable automation of pressing.

Figure 1 shows the device in the initial position, the cross section; 2 is the same at the time of pressing; fig.Z - the same in the final position; in Fig.4, section A-A in Fig.1; figure 5 - node I in figure 1 (the contour of the teeth of the comb and composite stop).

A device for pressing powder products (Fig. 1) consists of a lower base 1 and a container 2. A lower punch 3 is mounted on the lower base 1, and an upper punch 5 is placed on the upper base 4 and a matrix 6 consisting of a set elements joined in the longitudinal plane, made in the form of sectors, having the possibility of free movement in the radial direction, i.e. perpendicular pressing axis. In the initial position of the sector of the composite matrix 6 together with the lower punch 3 form a matrix cavity. The sectors of the composite matrix b are covered by wedge clamps 7.

In the container 3, pairs of mutually perpendicular holes 8 and 9 are made. In this case, in the vertical holes 8 of the container 2 there are placed guide columns 10 fixed to the lower base 1, and horizontal holes 9 are placed with the possibility of elastic pressing to the inclined sections 11 of columns 10 stops 12. The inclined section of the column 10 is made at an angle of 1-45 ° to the vertical axis of the column, while the section is made step comb, and the top of each step is located on the generator of the inclined section, and the stop 12, in turn, made of a composite of at least two elements that are in contact with each other in a plane perpendicular to the axis of the column (figure 5).

The stops 12 are provided with elastic elements 13, the total force of the elastic elements in the initial position balances the weight of the container 2, i.e. interferes with its free lowering. On the lower base 1 there is a buffer 14, which softens the contact of the container 2 to the lower bases.

The device works as follows.

In the initial position in the cavity formed by the sector elements of the composite matrix 6 and the lower punch 3, powder is poured, Sectorial elements

the composite matrix 6 is in a closed position due to the force generated by the wedge clamps 7. During pressing, the lateral friction created by the elastic elements 13 of the stops 12 decreases due to the latter moving along the inclined sections 11 of the guide columns 10. However, due to the increase the external lateral pressure of the powder, the total rubbing force holding the container 2 from

down, remains unchanged.

When relieving the pressing pressure, due to the elastic aftereffect, the wedge clamps 7 release the composite matrix 6 and, accordingly, the product, while the stops 12

cannot hold the container 2, and the latter is lowered onto the buffer 14 of the lower base 1, thereby ensuring the decompression of the product.

Increased productivity and

it is possible to automate the pressing.

Claims (2)

1. A device for pressing products from a powder, comprising a container, a composite matrix with wedge clamps, an upper and lower punches and a lower base, characterized in that, in order to increase productivity and enable automation of pressing, it equipped with guide columns rigidly mounted on the bottom base and stops, the container is made with pairs of mutually perpendicular holes, with the columns being placed in the vertical holes of the container and made inclined at an angle of 1-45 ° to the vertical axes in sections, and the stops are placed in horizontal openings of the container with the possibility of elastic pressing against the inclined surface of the column. 2. Device pop. 1, characterized in that the stop is made of at least two elements installed with the possibility of contact with each other in a plane perpendicular to the axis of the column, and on the inclined section of the latter there is a step comb, and the top of each step located on the generator of the slope. B gff XO / 7 Od0Ј / W8099L fig