RU2337006C1 - Polymer-based tile production plant - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: polymer-based tile production plant consists of a die and a punch, a punch drive and a polymer melting chamber comprising a heating system. The used rectangular-section die is furnished with a cover and a cooling system. The punch is fitted on the con-rod to be reciprocated forced by compressed air fed into the distribution chamber and to compress and reject the finished product.

EFFECT: tile higher quality, ease of manufacture and improved manufacturability.

2 dwg

Description

The invention relates to devices for the manufacture of cultural products (in the form of polymer tiles) based on polymeric materials and can be used in the processing of polymers in the chemical industry.

A known design of a device for the manufacture of polymer products. The mold provides mutual alignment of the punch and the matrix: the input pairing of the punch with the loading chamber, the fit of the forming signs having the input elements in both the matrix and the punch, the fit size of the punch and the matrix in their holders is performed according to the seventh quality.

At the same time, the technologically achievable accuracy of the pressed products corresponds to the tenth quality. The mold has a heating system consisting of cylindrical rods of electric heaters directly in contact with the die and punch [Kazankov Yu.V., Makarov MS, Mironov VA Calculation and design of the forming tool. - M .: Rotaprint MIHM, 1992, pp. 4-15, Fig. 1.1 and 1.2].

The disadvantages of this device is the lack of a cooling system for the pressed product that does not allow the finished product to be pushed out after pressing, which significantly reduces the productivity and quality of the manufactured product, and the complexity of the mold design.

The closest in technical essence and the achieved effect is a device for producing blanks based on polyvinyl chloride with a steam generator, containing high pressure cylinders for the preparation of melts, a mold with a heating system consisting of upper and lower dies, between them there is an intermediate forming calibrating and removable sleeve . A movable disk is mounted in the sleeve, which is mounted on the rod (AS USSR No. 1391932, В29С 67/12, 1988).

A disadvantage of the known mold is the difficulty of pressing due to a defect in the pressing and pushing unit of the pressed product. The absence of a cooling system for the compressed product reduces the productivity and quality of the polymer tiles produced.

The objective of the invention is to simplify the design of the installation and improve the quality of manufactured tiles from polymeric materials.

The problem is solved due to the fact that in the installation for the manufacture of building tiles based on polymeric materials, consisting of a matrix, a punch, a mechanism for reciprocating movement of the punch, a high pressure cylinder for melting the polymer and a heating system, in contrast to the prototype, the matrix is square cross section with cover and cooling system, the punch is mounted on the stem with the possibility of reciprocating movement due to the supply of compressed air to the distribution chamber in compression and ejection of the compacted product.

The technical result provided by the installation for the manufacture of building tiles based on polymeric materials is expressed in the simplification of the design and improving the quality of the manufactured tiles by choosing the optimal matrix geometry in the form of a square cross section with a cooling system. The provided mechanism for reciprocating movement of the punch is fixed to the rod due to compressed air supplied to the distribution chamber.

In the process of pressing, tiles without warping are made; large dimensional accuracy and quality of tiles are ensured.

The invention is illustrated by drawings. Figure 1 shows the installation with the necessary attributes for the pressing process; figure 2 is a cross section along aa matrix with a cooling chamber.

The installation for the manufacture of building tiles based on polymeric materials in accordance with figure 1 contains four chambers: a square cross-section matrix 1 for pressing with a cover 2 and a casing 3 with a pipe 4, a chamber 5 with covers 6 and 7 and a punch 8 and a rod with a disk 9 and nozzles with valves 10; a high-pressure cylinder 11 for melting the polymer with a cover 12 and a piston 13 with a rod with divisions 14, electric heating 15 and insulation 16 and nozzles with valves 17 and a shut-off valve 18; a chamber-hopper 19 with a nozzle 21 and a shut-off valve 20. FIG. 2 shows a die for pressing 1 in section with a casing 3 and a space 22 for a cooling agent, as well as a pressed tile 23.

Installation for the manufacture of building tiles based on polymer materials works as follows.

The polymer is loaded into the chamber-hopper 19, from the hopper with compressed air supplied through the pipe 21, the granular polymer is fed into the high-pressure cylinder 11, after filling, the valve 20 is closed, the electric heating system 15 is turned on, in the high-pressure cylinder the granular polymer turns into a melt, then it is fed compressed air through the nozzle with valve 17 into the cylinder 11 and using the piston 13 the melt is pressed into the matrix 1, the dose of the supplied melt after filling the matrix 1 with the required dose of the melt was set according to the divisions of the rod 14, initially dosed on the polymer melt, the shut-off valve 18 was shut off, then we supply compressed air through a nozzle with a valve 10, which moves the disk with the stem 9 and punch 8, thereby compressing the tile 23, after pressing, a cooling process was carried out with compressed air, which was supplied through the pipe 4 into the space for the cooling agent 22.

After cooling, the lid of the chamber 2 opens and the pressed tile 23 is pushed out by the piston. Subsequently, all operations are repeated.

The present invention is most useful in the manufacture of building tiles. On the developed design of the installation, a tile was made of polypropylene of the brand 01003TU211-020-0020-3521-96 of a size of 150 × 150 mm, a thickness of 4 mm.

The optimal mode of melt pressing at a temperature of 468-478 K and a created pressure of 3.5 ÷ 4.0 MPa.

The proposed installation for the manufacture of tiles based on polymeric materials can improve the quality of pressed building tiles to improve and simplify the technology of its manufacture.

Claims (1)

Installation for the manufacture of building tiles based on polymeric materials, consisting of a matrix, punch, reciprocating mechanism of the punch, high pressure cylinder for melting the polymer and heating system, characterized in that the matrix is made of square cross-section with a lid and a cooling system, the punch is mounted on the stem with the possibility of reciprocating movement due to the supply of compressed air to the distribution chamber for compression and ejection of the compressed product i.

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