CZ21626U1 - Apparatus for making plastic articles with final surface treatment and inherent compact reinforcement - Google Patents

Description

Technical field

The technical solution relates to a device for the production of plastic products with final surface treatment and their own compact reinforcement using pressure injection technology.

Background Art

Various components and semi-finished products, especially for the production of cars and tractors, are made of plastics by vacuum forming. A significant problem in the manufacture of these components is their surface finish and mechanical strength. As a rule, the products are subsequently coated with materials, which may be lacquers or resins, which are sprayed or coated on the intended surface.

Laminating, or various coating and foam systems with high technological demands and high labor intensity are also used. The resultant product exhibits deficiencies in color fastness, mechanical, chemical and thermal resistance, but also in sound properties.

The essence of the technical solution

The above drawbacks are largely eliminated by the device for producing plastic products with a final surface treatment and their own compact reinforcement according to the invention. It is based on the fact that it consists of a foaming mold, the bottom of which is shaped for insertion of a plastic part with a final coating. A cavity with a reinforcing rib is formed on the opposite molding lid of the foam mold, which is connected to the mixing and filling unit with the reservoirs of the individual components of the reinforcing composition. Attachment and mounting elements can be attached to the inner wall of the foam mold forming lid.

The device according to the technical solution makes it possible to produce parts, products, semi-finished products with a final surface treatment, ie a constant color, high resistance to UV radiation. The manufactured products exhibit high mechanical strength and heat resistance up to 140 ° C.

The compact, flexible bonding of the final surface-treated plastic and the reinforcement compound into its own compact reinforcement allows products to be produced with favorable sound properties, chemical stability and durability. Compact reinforcement significantly reduces vibration transmission. The equipment according to the technical solution is technologically very simple and easy to operate and maintain. The manufacturing process involves the pressing, foaming and trimming phases.

List of drawings in the drawing

The accompanying drawing schematically shows an exemplary embodiment of a device according to the invention. Fig. 1 is a cross-sectional view of the heated foam mold and Fig. 2 is a detailed view of the plastic portion at the bottom of the foam mold.

Examples of technical solutions

The apparatus for producing plastic articles with the final coating and the self-reinforcing reinforcement shown in FIG. 1 consists of a foaming mold 10, the bottom 11 of which is shaped to receive a plastic component 30 with a finished finish. A cavity 20 with reinforcing ribs 2b is formed on the opposing forming lid 12 of the foaming mold 1b. The cavity 20 is connected to the mixing and filling unit 40 with the reinforcing compound component reservoirs. On the inner wall

13 of the forming lid 12 of the foaming mold W are mounted attachment and mounting elements 22.

The device works by inserting the finished plastic surface 30 with the face side into the bottom of the mold 10, which is closed by the molding lid 12. The cavity 20 between the molding lid 12 and the back side of the plastic portion 30 and the reinforcing ribs 21 is performed by 1 In the molding lid 12, the pressure-injection molding technology CZ 21626 is filled with a reinforcing mixture. It is advantageous to install connecting and mounting elements 22 on the inner wall 12 of the forming lid 12. Prior to filling the foam mold 10 with the reinforcing composition, it is possible and advantageous to treat the reverse side of the plastic part 30 and the inner wall 13 of the forming lid 12 thermally and chemically. The reinforcing composition is prepared in the mixing and filling unit 40, where its components are fed from the containers.

The device according to the invention is intended primarily to reinforce the final surface-treated plastic products, components and semi-finished products, especially in the automotive industry.

Claims (2)

PROTECTION REQUIREMENTS 1. An apparatus for manufacturing plastic products with a finished surface and their own compact reinforcement using pressure injection technology, characterized in that it consists of a foaming mold (10), the bottom (11) of which is shaped to receive a plastic part (30). ) with a final surface treatment, while on the opposite molding lid (12) of the foaming mold (10) is formed a cavity (20) with reinforcing ribs (21), which is connected to the mixing and filling unit 15 (40) with reservoirs of individual components of the reinforcement mixture. Device according to claim 1, characterized in that the connecting and mounting elements (22) are fastened to the inner wall (13) of the molding lid (12) of the foaming mold (10).