SU931292A1 - Apparatus for pressing powder articles - Google Patents

Description

one

The invention relates to powder metallurgy, in particular, devices for manufacturing articles with thread.

A device for pressing helical gears is known, consisting of upper and lower punches, a die, a guide and rigging plates. The outer surfaces of the punches, the inner surface of the die, and the central opening of the guide plate are provided with oblique teeth.

The lower punch is in constant engagement with the die. In order to enable rotation of the sleeves, the latter are mounted on angular contact bearings, mounted on the base plates of the GPO, however, this device does not allow to obtain products with internal threads.

The closest to the proposed technical essence and the achieved result is a device for pressing powder products, comprising a drive, a matrix made in the form of forming elements associated with the drive, and clamping plates. The plates are mounted on the ends of the matrix with the possibility of displacement relative to its axis t2.

The device is intended for the manufacture of complex products, but does not allow the extrusion of products with internal threads. In addition, the product can be carried out only manually, which increases the labor intensity of manufacturing products and reduces labor productivity.

The purpose of the invention is the expansion of the technological capabilities of the device automation of the removal of products.

The compiled goal is achieved by the fact that the device for pressing

powder products, comprising a housing, an actuator, a matrix made in the form of forming elements associated with the actuator, and clamping plates are provided with a threaded pair consisting of a rod and a slider, one of the plates is fixed, the slider is mounted on the latter with the possibility of -accessible movement, and the rod is placed in the center of the forming elements with the possibility of rotation.

FIG. 1 shows the device in the process of pressing, general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - the device in the process of 1 removal of the product, general view.

The device for pressing powder products consists of a worm gear 1, a housing 2, an upper plate 3 and a lower fixed plate in which the crackers 5 are rigidly fixed. The worm gear 1, which transmits the rotational motion to the housing 2, is driven through Worm to 6. The device contains a threaded rod 7, located in the center of the housing 2 between the matrix form elements 8 and forming a threaded pair with a slider 9 mounted on the bottom plate i with the possibility of reciprocating motion, as well as cheats to 10, drive drive threaded rod 7.

The device works as follows.

By means of the screw 6, the forming elements 8 are retracted from the center to the extreme position and after filling the powder between the Threaded rod 7 and the forming elements 8, the upper plate 3 is lowered onto the end of the die. With the help of the worm gear 1 and the screw 6, the body 2 is attached to the rotational Movement, which through the crackers 5 provides the movement of the forming elements 8 to the threaded rod 7 located in the center of the device. This ensures that the powder is pressed around the rod 7. After pressing (Fig. 1), the plate 3 rises up and the reverse movement of the screw pair forms the molding elements away from the rod 7. After that, the screw 10 rotates the shaft 7, thereby slider 9 and the pressed product is simultaneously raised, upwards along the thread of the rod 7 until the product is released from the rod (Fig. 3). To prevent possible slippage

the slider and the compacted product and their contouring on the slider 9 is a milled narrow groove directed from the center of the slider to its periphery. When pressing on the product

a small protrusion is obtained, which is then removed by further processing.

After removing the extruded product, slider 9 returns to

the initial position and the cycle are repeated.

The proposed device makes it possible to produce products with internal thread and to carry out their automatic removal, which reduces the labor intensity of manufacturing the products and increases the labor productivity by 1.5–2 times.

Claims (2)

Invention Formula A device for pressing powder products, comprising a housing, an actuator, a matrix made in the form of forming elements associated with the actuator, and clamping plates, characterized in that, in order to expand the technological capabilities of the device and ensure automation of product removal, it is provided with a threaded pair consisting of a rod and a slider, one of the plates is fixed, the slider is mounted on the latter with the possibility of reciprocating motion, and the rod is placed in the center of the forming elements with the possibility of ascheni Sources of information taken into account in the examination 1. Japanese patent number 8-29901, cl. 73 In Oh, published. 1973. 2. USSR author's certificate number 579100, cl. B 22 F 3/02, 1975. 1 /////// ULU /. ) u, u /////// .f