SU1689095A1 - Apparatus for machining polymer materials - Google Patents

Abstract

The invention relates to the field of mechanical processing of polymer products and is intended to remove grata from them. The goal is to increase the productivity, efficiency and quality of processing products of complex shape. For this, the device is provided with perforated pipes installed in the lower part of the bath along opposite walls for supplying refrigerant and compressed air. It is provided with a means for transporting products along a bath, made in the form of a closed drive conveyor with grips for products. The conveyor is installed above the level of the liquid, and the grippers are partially immersed in the liquid. When working under the influence of electro-shock, deburring occurs. 3 hp f-ly, 2 ich.

Description

The invention relates to the field of mechanical processing of polymer products and is intended to remove grata from them.

The aim of the invention is to increase the productivity, efficiency and quality of processing products of complex shape.

FIG. 1 shows a device, a longitudinal section through the bath; in fig. 2 shows section A-A in FIG. one.

The device for processing products consists of a bath 1 filled with liquid 2.

Electrodes 3 and 4 of the pulse discharge and a concave spherical screen 5 are installed in the bath. A drain funnel 6 is formed in the lower part, to which the drain pipe 7 is attached. A discharge grid 8 is installed above the drain pile. along the walls of the bath, perforated lines 9 for supplying coolant and compressed air are installed. The bath is equipped with means 10 for-г transporting a product made on the aide of a closed chain conveyor 11 with grips 12 for products, and the conveyor is installed in the bath above the liquid level so that the gripper part with the part 13 transported by it can be immersed in it. an axis 14 mounted loosely in the openings of the suspensions 15 of the conveyor, the gripper 12 being able to rotate on the axis 14 relative to the suspensions 15.

At the entrance to the bath, a mechanism 16 for opening the grip 12 is installed, and after leaving the bath, the mechanism 17 for opening the grip 12.

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The device works as follows.

In the bath 1, the refrigerant and the cooled liquid having a low freezing point (for example, water with the addition of alcohol) are fed through the pipeline to the embrittlement temperature of products -50 ....- 60 ° C.

When the conveyor 11 moves, the opening mechanism 16 opens the grip 12 at the entrance to the bath 1.

The article 13 is placed in the grip and conveyed to the bath 1 where, under the action of the cooled liquid 2, the blister is brought to a brittle state. Next, the products are transported between the pulsed discharge electrodes 3 and 4 and the screen 5 mounted on one side. At the time of passing the details of electrodes 3 and 4, discharge takes place and electro-hydraulic blow is performed to clean the burr or burr.

In order to intensify the process, a bubbling of liquid is carried out in the bath under the action of the compressed air coming from the pipeline 10. When the temperature is sufficient to embrittle the product, the refrigerant supply is shut off.

When the part 13 moves in the liquid, it can rotate on the axis 14, thus facilitating the cleaning process from oblo and flash, hard-to-reach places of the product in a stationary state.

As it moves on the conveyor 11, the part 13 passes several pairs of electrodes, then it starts to rise along the inclined part of the conveyor from the liquid and after leaving the bath 1, the mechanism 17 opens the grip 12. The product falls out of the grip and enters the finished product container (not shown). The coolant and compressed air entering the bath 1 during operation increase the volume of liquid in the bath 1, the surplus of which is drained through a pipeline (not shown) connecting the upper part of the bath to the drain pipe 7.

Plastic products can be processed without refrigerant 2 being supplied to the liquid.

As the accumulator accumulates on the grate 8 and the liquid 2 is contaminated, the liquid is drained through the adhesive pipeline 7

The grate is removed and cleaned of flash.

You can clean the scraper from the grill 8 without removing it. After filtration of the liquid, it again fills bath 1. The work is continued in the sequence described.

The proposed device allows for

counting the continuity of the processing cycle greatly improve performance. Since the product can be rotated during transportation by the conveyor and pass through several zones with established

in the bath with pairs of electrodes, cleaning of places that are not readily available with a stationary product is facilitated and, as a result, the quality of processing is improved.

Claims (4)

1. A device for processing polymer articles, containing a bath filled with liquid with pulse discharge electrodes installed therein and a screen, characterized in that increasing the productivity, efficiency and quality of processing products of complex shape; it is provided with perforated pipes installed in the lower part of the bath along opposite walls for supplying refrigerant and compressed air and means for transporting products along the bath, made in the form of a closed drive conveyor with grips for products; conveyor mounted above the liquid level, and the grippers are partially immersed in the liquid. 2. Device pop. 1, characterized in that the grippers are rotatably mounted on the conveyor relative to vertical axes. 3. The device according to paragraphs. 1 and 2, characterized in that it is provided with mechanisms for opening the grippers mounted on the bath from the inlet and outlet side 5 conveyors. 4. Device on PP. 1-3, characterized in that the bath is made with a drain funnel placed below the pipelines, in which a removable funnel is installed 0 grid. to 0 a