SU1069950A1 - Arrangement for charging powder to die-casting mould - Google Patents

Abstract

A DEVICE FOR DOWNLOADING PORCHIS INTO A PRESS FORM, containing. a bunker, an actuator placed on a movable carriage, a feeder and a flexible hose connecting the feeder with the pcw bunker, characterized in that, in order to ensure the possibility of sequential loading of powders of different chemical composition, the feeder is made in the form of a camera metering unit movement relative to the carriage and is equipped with a shutoff valve with loading nozzles mounted on the surface of the dispenser with the possibility of reciprocating movement. ate about with with with sp

Description

This invention relates to a powder. metallurgy, in particular, to devices for loading powder into the mold.

A device is known for loading powder into a mold, including a mobile hopper with a drive mounted on the end surface of a mold G13 "

The closest to the proposed technical essence and achievable result is a device for loading powder into a mold containing a hopper, an actuator placed on a movable carriage, a feeder and a flexible hose connecting the feeder with the hopper 2.

The disadvantages of the known devices are the inability to sequentially load powders of different chemical composition into the mold.

The purpose of the invention is to provide the possibility of sequential loading of powders of different chemical composition.

To achieve this goal, in a device for loading powder into a mold containing a hopper, an actuator placed on a movable carriage, a feeder and a flexible hose connecting the feeder with the hopper, the feeder is designed as a dispenser with chambers, installed with reciprocating movement relative to the carriage and provided with a shut-off valve with loading nozzles installed on the surface of the dispenser with the possibility of reciprocating movement.

FIG. 1 shows the scheme of the proposed device; in fig. 2 is a view A of FIG. one.

The device comprises a movable feeder that includes a carriage 1 with a feed funnel 2, the carriage 1 being mounted on a press plate 3 (not shown) with a die 4 with the possibility of an automatic reciprocating motion along the press. On the carriage 1 with the possibility of reciprocating

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The dispenser 5c is installed with chambers b and 7, on which a shutter 8 is placed with compartments with loading ports 9 and 10 connected by flexible hoses 11 and 12 to bunkers 13 and 14, in which powders of different compositions are filled. To displace the shutter 8 relative to the chambers 6 and 7 of the dispenser 5, two springs 15 are provided, mounted on the shutter 8 and the stand 16 mounted on the doser 5, Springs 18 are placed between the case of the doser 5 and the stand 17 mounted on the carriage 1. For a fixed stop carriage when moving it to the matrix is provided

stop 19, and for the forced removal of the shut-off valve 8 to its original position - stop 20.

The feeder is driven from the levers 21 used on automatic presses without changes in their kinematic scheme.

The device works as follows.

In the initial position, the loading nozzles 9 and 10 are under the hopper 13 and 14 and are filled with powder. In this case, the spring 15 is stretched by the stop 20, and the drive is in the extreme left position according to the cycle diagram of the operation of automatic presses.

When the actuator triggers, the dispenser 5 moves towards the die 4 and carries the carriage 1 through the spring 18. At this, the flap 8 moves away from the stop 20, and the spring 15, compressed, moves the flap in the direction opposite to the direction of movement of the feeder, compartment in a tight manner 9 and 10 from chambers 6 and 7 and stopping the access of powders in the latter. When combining the funnel 2 with the matrix 4, the carriage rests against the stop 19 and stops, and the dispenser continues to move in the same direction, stretching the spring 18. When the cameras b and 7 are successively combined with the funnel 2 and the matrix 4, the powder is poured out of the matrix chamber. After the chamber 7 is fully aligned with the die, the feeder moves in the opposite direction. At the same time, the spring 18 is compressed and returns the dispenser relative to the carriage until it stops in the rack 17. Upon further movement of the feeder, the flap 8 stops by the abutment 20 at the level of matching the nozzles 9 and 10 with the clocks b and 7.

Thus, the proposed device for filling powder into the mold, the operation in the automatic mode of the press allows one to sequentially load powders of different compositions into the mold. You can adjust the dose ratio of the loaded nopougs in the selection of the camera volumes of the dispenser. This will make it possible to use cheaper and less scarce porous materials for pressing parts for less critical parts of products.

For example, the use of the proposed device in the automatic pressing of teeth for drill bits compared to the known ones, which allow the powder to be loaded into the mold of only one composition, for example, an alloy of the VK ZEK brand, ensures pressing the teeth of two alloy grades, where the working part is 0.2 volume, is made of alloy VK VZVK, and the base of the crown is made of cheaper alloy VZHN-15. This will allow when executing

2 million pcs. crowns per year to obtain an economic effect on the order of 370500 thousand rubles. in year.

FIG. 2

Claims (1)

DEVICE FOR LOADING POWDER POWDER IN THE PRESS FORM containing a hopper, a drive placed on a movable carriage, a feeder and a flexible sleeve connecting the feeder to the hopper, characterized in that, in order to enable the sequential loading of powders of different chemical composition, the feeder is made in the form the dispenser 'with cameras, mounted with the possibility of reciprocating movement relative to the carriage and equipped with a cut-off valve with loading nozzles mounted on the surface of the dispenser with the possibility of return spot-translational movement, tg. «I