SU664846A1 - Press for moulding articles from plastic mass - Google Patents

Description

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The invention relates to powder metallurgy, in particular to presses for pressing products from slip mass, and can be used in the manufacture of ferrite or ceramic products by the method of wet pressing.

A known mold for wet pressing of the powder contained, and the upper and lower punches and the 0-1 die matrix, pressed against the lower movable punch, forming an extrusion chamber into which the slip mass is pressed under pressure, while pressing is performed by the lower movable punch when applied to him pressing force 1.

However, the known mold does not provide an accurate dosage, since the filling ratio may change when the batch is changed. In addition, the performance of the mold is low.

Also known is a press for pressing products from slip mass, including an upper stationary support plate, and upper punches with channels for draining the fluid, a movable plate with matrices installed on it, and a spool device 2. The press is equipped with a metering regulator that through the spool device and pipelines feeds the mass into the mold under pressure.

Such a press is the closest to the proposed technical essence and the achieved effect.

The disadvantage of this press is the low accuracy of dosing, which is due to the considerable distance of the clicker mass passing from the metering controller to the mold through the pipeline connecting them, and feeding the mass dose to the mold with a larger volume than the dose volume, which reduces productivity pressing.

The aim of the invention is to increase the pressing performance and accuracy

finish coating slip.

The goal is achieved by the fact that the press is equipped with adjustable movable stops, placed in the upper plate, each upper punch is made

with a protrusion on the side surface in contact with the stop, and the spool device is made in the form of several spools, one of which is fixed on the die; in order to create a sealing between the lower punch and the die, each die is pivotally mounted on a moving plate, and a sealing element is mounted on the end of the die. The drawing shows the proposed device, a General view.

The device consists of upper pinsonvv 1, at the pressing end of the th: 6to | The lug is loosened tip 2, dies 3, fyrniryb Fixed on the movable plate 4, H6 ori 8. The inserts 7 are fixed on the upper support plate 9. On each die 3, the spool 10 is fixed on the side surface and the sealing ring 11 is mounted on the end face. Below the connector line, the mold consists of a lower support plate 12 on which the lower punches 13 are mounted. In p Anson 1 and 13 has channels 14 for discharging liquid.

The device works as follows.

In the initial position, the mold is open and the dies 3, which are under the force of the upper hydrocylium, occupy the lowest position. When the bottom support plate 12 moves with the force required to create a hermetic joint, the dies 3 are in contact with the lower punches 13, while the sealing rings 11 are squeezed, creating a reliable tightness of the resulting pressing chamber. The slip mass under pressure is fed through the spool 10 into the pressing chambers, after which the spool switches, and the lower support plate 12 moves with a pressing force, squeezing the liquid through the tip 2, which is sucked through the channels 14 in the upper and lower punches. The height of the upper punches is adjusted by adjustable stops 6 by screwing them into the inserts 7.

The pressing force is transmitted to the upper punches 1 ot of the upper support plate 9 through the protrusion 8. The hinged fastening of the dies 3 on the movable transverse plate 4 and the plate 4 itself on the tons of 5 ensures the self-alignment of the dies at the time of adjustment and pressing. After the extrusion is finished, the bottom support plate 12 takes the initial position, the Matrix § YDD and is fed up to the fepxeefo Arainegb position, the SffpecTable product is JSL, the dies take up the initial position and the mold 5 is ready for the next pressing.

Regulation of the position of the junction is done by changing the extruded products or changing the batch of the clicker mass.

0 The proposed device will allow precise dosing of the dosing mass delivered by the mold itself and thus exclude from the press circuit 1.and the dosing regulator, increase productivity by 50% due to the reduction of the pressing cycle and the setup time, greatly simplify the operation and repair of the press -forms.

Claims (2)

1. A press for pressing products from a click mass, including a fixed base plate, lower and upper punches with drain channels 5 fluids, a movable plate with matrices installed on it and a spool device, characterized in that, in order to increase the pressing capacity and precision of the metering of the slip 0 mass, yress is equipped with adjustable movable stops installed in the upper plate, each upper punch is made with a protrusion on the side surface in contact with the stop, and the spool 5 the device is made in the form of several spools, each of which is cut on the die. 2. The press according to claim 1, characterized in that, in order to create a tight joint 0 between the lower punch and the die, each die is fixed Sharnarno on the iodine plate, and a sealing element is mounted on the end of the die. Information sources, Yriy Tye attention yyr ekzyertize 1. USSR author's certificate number 498094, cl. In 22F 3/02, 1974. 2. USSR author's certificate number 365282, cl. In Call 15/30, 1970. Suction The pass