SU942996A1 - Casting mould for producing reinforced polymeric articles - Google Patents

Description

(54) CASTING FORM FOR MANUFACTURING POLYMERIC PRODUCTS WITH FITTINGS

one

The invention relates to the processing of plastics and can be used for the manufacture of articles with fittings by injection molding.

A casting mold for products with reinforcement is known, comprising a nest-forming plate, an ejector plate with ejector, a device for returning the ejector to its original position before the mold closes, including spring-loaded cams interacting with the cam. A device for returning the pushers to their original position is located in the shank. The pushers are rigidly secured in the pusher plate and move with the pusher plate 1.

The closest to the technical essence and the achieved effect to the proposed is a casting (|) form for the manufacture of products with reinforcement, containing a fixed gating plate, base, matrix and punch plates, ejector pusher plates, shanks, and ejector return mechanism before closing the form.

including spring-loaded sliders interacting with copiers 2.

However, these farms do not provide quality manufacturing of products with fittings such as thin-walled glasses, sleeves,

5 caps, as they provide for pushing into reinforcement, which leads to the breakthrough of the walls, chips or deformation of the ends of the part. Due to the fact that the entire ejector system is spring loaded, it is likely

, Q jamming, failure of the ejector system due to skewing along the guide sleeves.

The purpose of the invention is to increase the reliability of the form in operation and the quality of the products by preventing damage to them.

15 when ejecting through reinforcement. This goal is achieved by the fact that the casting mold for the manufacture of polymer products with reinforcement, containing a fixed gating plate, a base,

Claims (2)

2Q dies and punch plates, ejector system plates with ejector, shank and ejector return mechanism to its initial position before the mold closes, including spring-loaded sliders interacting with copiers, equipped with an ejection plate rigidly connected with the ejection system plates, and mechanism sliders return ejector placed between the plates of the ejector system and the base and are made with holes for ejector, the latter are installed with the possibility of limited movement relative But plates of the ejector system, and copiers are made in the form of support racks. FIG. 1 shows the shape, section; in fig. 2 - hole in the slider; in fig. 3 manufactured product. The casting mold contains a fixed gating plate 1, a plate 2 of dies, a plate of 3 punches, a plate 4 is detachable, connected with 5 with plates 6 of the ejector with ejectors 7 installed with limited displacement relative to the plates 6. Between the plates of the ejector system and The base 8 houses spring-loaded sliders 9 of the mechanism for returning the ejector to the initial position before closing the mold with holes 10 under the ejectors 7 and the rollers 11 mounted on them. Copiers interacting with the sliders are made in de cams 12 arranged between the base 8 and the intermediate plate 13. The shank 14 is fixed in plates 6 of the ejector system. The form works as follows. At the beginning of the ejection, the shank 14 rests on the abutment of the injection molding machine (not shown) and the movable ejection plates 6 begin to move along with the ejector, 7, 7, sliders 9 and 4 removal plate. The removal of the punches begins. Simultaneously, the slide blocks 9 with the rollers 11 interact with the copiers 12 and at some point the ejectors 7 slip into the holes of the sliders 9, while under the action of the spring the ejectors 7 return to their original position, freeing up space for placing the reinforcement during the subsequent pressing. The plates 6 together with the 4 plates are removed, continuing to move, sticking the product. When the mold plate 2 closes the form, resting against the plate 4, the plate 6 returns the plates 6 to the initial position through the pulls 5, and the sliders 9 return to the initial position under the action of springs. The use of the proposed form allows to obtain a positive effect by increasing the reliability of the ejector system by eliminating the wedging of its elements and increasing the quality of the products, which ensures the pushing of the products into the reinforcement and into the end surfaces. Formula of the Invention Molding mold for the manufacture of polymer products with reinforcement, containing a fixed casting plate, a base, matrix and punch plates, ejector systems with ejectors, a shank, and a mechanism for returning ejectors to the initial position, including spring-loaded sliders that interact with copiers, characterized in that, in order to increase the reliability of the form in operation and the quality of the products by preventing them from being damaged when pushed out by reinforcement, the form is provided and a plate of removal, rigidly connected with the plates of the ejector system, and the sliders of the ejector return mechanism are placed between the plates of the ejector system and the base and made with holes for the ejectors, the latter being installed with limited displacement relative to the plates of the ejector system, and the copiers made in the form of support pillars. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 560757, cl. B 29 C 5/00, B 29 C 7/00, 29 D 3/02, 1975. 2. USSR author's certificate No. 295672, cl. In 29 C 1/00, 1967 (prototype).