SU958123A1 - Apparatus for making annular rubber articles - Google Patents

Description

one

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of annular rubber products, including with fittings.

A device for the manufacture of ring rubber products is known, comprising a press, an upper and a lower plate connected to the press, mounted on the last casting multi-Q form and a casting unit with casting chambers according to the number of injection mold slots and plungers mounted on the upper plate one.

In the indicated device, the mold J5 is made in the form of a plate in which the forming nests are drilled, whereby for the manufacture of products of several sizes it is necessary to have a large number of such mold forms, which causes a significant intensity of the device. The closest to the present invention is a device for making

annular rubber products containing a press, a vertically movable upper and floor with a lower plate, connected to the press, removable injection molds, the upper mold halves of which are mounted on the upper plate, and the injection molding unit- 2.

In the known device, the injection unit is made in the form of independent injection cylinders for each form, which leads to its complex construction, and the lower half-forms are mounted on the bottom plate, which at the time of unloading products is in the area of the plates, the press, which makes unloading finished products difficult.

The purpose of the invention is to simplify the design of the injection unit and to facilitate the unloading of finished products.

Claims (2)

To achieve this goal, a device for the manufacture of annular rubber products containing a press, a vertically movable upper plate and a bottom plate arranged with the press, removable injection molds, the upper half-molds of which are mounted on the upper plate and the injection unit, are provided with a distributor plate with runner channels installed above the lower PLI.TOY with the possibility of moving in the vertical and perpendicular vertical axis of the device of directions, and the lower half-forms are mounted on cooking plate. Parallel to the sides of the bottom plate, guides are installed for the distribution plate, mounted on the press by means of vertically movable plates. The injection molding unit is made with an injection chamber located centrally of the lower plate, and on the lower side of the distribution plate there is a central protrusion interacting with the injection chamber. Fig, 1 shows the proposed device in the working position; in FIG. 2, the same in the open position; in FIG. 3, the same at the time of unloading the finished products; in FIG. t, the mold in the closed position. A device for manufacturing annular rubber products comprises a press 1 (FIG. 1) with a fixed 2 and a movable 3 plates, to which respectively a vertically movable upper plate k is connected and the lower plate 5 located at the floor with it. The device is equipped with a distribution plate 6 with runner channels 7 The plate 6 is mounted above the bottom plate 5 with the possibility of movement in the vertical and perpendicular vertical axis of the device of directions. Parallel to the sides of the bottom plate 5, the guides 8 for the distribution plate 6 are installed. The guides 8 are mounted on the press 1 by means of vertically movable bars 9. The device has four removable molds consisting of vertices 10 of them (Fig. K); the bottom floor of the forms 11 with gating channels 12 and the ring liners 13. The upper half-molds 10 are mounted on the upper plate k, and the lower half-molds P are on the distribution plate 6, the Injection unit 1 is made with a casting chamber 15 located in the center of the lower plate 3, and plunger 16 (Fig. 2). On the lower side of the distribution plate, a central protrusion 17 is formed, which interacts with the casting chamber 15. The device works as follows (the description of the work is applied to the manufacture of reinforced ring products). ) metal rings and pre-heated casting molds are produced, the casting chamber 15 is filled with rubber mixture. Then the plate 2 of the press I is lowered and the molding of the molding molds is closed. The heating of the press is turned on until the curing temperature of the rubber mixture is reached. Next, the plunger 16 squeezes the rubber mixture out of the injection chamber 15 and through the sprues 7 of the distribution plate 6 and the sprues 12 of the lower half-molds 11 under pressure enters the molding cavities of the molds (Fig. 1). After molding and vulcanization of the articles, the movable plate 3 of the press is raised with the upper plate C and the upper half-molds 10, and the finished products remain in the lower half-molds II (Fig. 2). Then, the vertical bars 9 raise the guides 8 with the distributor plate 6, raise it above the lower plate 5 to a position at which its central protrusion 17 is above the level of the lower plate 5. Then the distributor plate 6 moves to the right (FIG. 3) in perpendicular the vertical axis of the device is directed to the outlet from the zone of the press 1, where finished products are extracted from the lower half-forms 11. Thereafter, the bottom molds are cleaned, the fittings for the following products are laid in them, and the distribution plate 6 is moved to the press to its original position. Then the cycle of operation of the device is repeated. The high pressure of the rubber mixture during casting and the execution of casting and vulcanization processes in the same press allows maintaining a constant pressure of the mixture in the forming cavities and minimizing underpressures, which ensures high quality of the products. The proposed device is simple in design and allows unloading of products outside the press area, which facilitates its maintenance. Claim 1. Device for manufacturing, annular rubber products, comprising a press, a vertically movable upper and a lower plate, associated with a press, removable injection molds, the upper half-molds of which are mounted on the upper plate, and the injection unit about which in order to simplify the design of the injection unit, to facilitate the unloading of products, it is equipped with a distributor .3 a plate with runner channels mounted above the bottom plate with the possibility of movement in a vertical and perpendicular l polar vertical tool axis directions, and the lower mold half mounted on a distributor plate. 2. A device according to claim 1, characterized in that, parallel to the sides of the bottom plate, guides are installed for the distribution plate, mounted on the press by means of vertically movable tons. 3. The device according to claim 1, which is the injection unit is made with an injection chamber located in the center of the bottom plate, and on the lower side of the distribution plate there is a central protrusion interacting with the injection chamber. Sources of information taken into account in the examination 1. US patent number Z «0521, cl. 26 4-269, published. 1968. 2. Patent ША № 415093Т, cl. 25-186, subpar. 1979 (prototype). fig 2