SU1537550A1 - Arrangement for producing rubber hollow articles - Google Patents

Abstract

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of hollow rubber products, in particular diaphragms for vulcanization. The purpose of the invention is to expand the technological capabilities of the device. For this, the mold half 3 is made up of detachable profile side 7, 8 and face 9, 10 disk parts. The side parts 7, 8 are fixed on the upper plate 1 of the press. The end parts 9, 10 are freely mounted on the ring base 11, which is connected by means of the pushers 12 to the rod 13 of the power cylinder. The end pieces are provided with half rings 14 and 15 for forming the bottom board of the product. In the end parts there is a cavity for the cylindrical liner 5 of the core. On the end portions, the bayonet locks 17 and 18 are diametrically mounted to move to alternately interact with the projections 20 of the side portions and the projections 21 of the base 11. Such a constructive design of the device ensures high-quality molding of the products by injection molding. 1 hp f-ly, 5 ill.

Description

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of hollow rubber products, in particular diaphragms for vulcanization.

The purpose of the invention is to expand the technological capabilities of the device.

FIG. I shows the proposed device in the working position; in fig. 2 - the same, in the initial position; in fig. 3 - the same, in the open position when removing the finished product from the core; in fig. 4 is a section A-A in FIG. one; in fig. 5 is a view B in FIG. one.

A device for making rubber-and-hollow products comprises a hydraulic press with upper 1 and lower 2 plates and a detachable mold 3 with heated half-molds having a connector along which forms the product, and the core 4 has cylindrical 5 and shaped 6 inserts mounted with relative axial capability movement. The semiforms are made up of detachable sectional side portions 7 and 8 and disk end portions 9 and 10. The side portions 7 and 8 are fixed on the upper plate 1 of the press. The end parts 9 and 10 are freely mounted on an annular base P. The latter is connected by means of pushers 12 to a rod 13 of a hydraulic press power cylinder (not shown), which is located along the axis of the device.

The end sections 9 and 10 are provided with semirings 14 and 15, respectively, for forming the lower borg of the article. In the end parts of the half-molds, a cavity 16 is made for the cylindrical insert 5, which is equal to it in diameter. A cylindrical liner 5 core mounted on the bottom plate 2 of the press.

The device is equipped with bayonet locks 17 and 18, diameters of oppositely mounted with the ability to move on the end parts 9 and 10 of the half-form using T-shaped guides 19. For alternate interaction with the bayonet locks there are projections 20 fixed on the side parts 7 and & half-molds, and protrusions 2, fixed on the base 1.

The side portions 7 and 8 of the half-molds have profiled molding inserts 22 and 23, respectively, with guide plates 24 on a conical side surface for engagement with inclined grooves 25 of the side portions. The forming inserts 22 and 23 for engagement with the horizontal grooves 25 of the end portions 9 and 10 have guide rails 27.

In liners 22 and 23, semi-annular grooves 28 are made for interaction

0

five

0

0

five

five

G

five

with annular protrusion 29 liner 6 core.

The core liner 5 through the adapter 30 is connected with the rod of the upper power cylinder of a hydraulic press (not shown), and an air valve 31 is installed in its lower part.

The device works as follows.

In the initial position of the device (Fig. 2}, the rubber mixture blank 32 is placed on the cylindrical liner 5, and the mold is heated to a predetermined temperature by supplying the heat transfer fluid to the side and face shirts. Then the press plate 2 is raised with the device nodes on it until the annular base 11 comes into contact with the end parts 9 and 10 of the mold 3. In this position of the device, the cylindrical insert 5 enters the cavity 13 before the workpiece 32 contacts the lower end of the core insert 6 ik and the interaction of the liner 5 with the semirings 14 and 15. In this case, the method of injection molding is forming a hollow product 33 in the gap between the forming liners 22 and 23 of the side parts and the liners 5 and 6 of the core (Fig. 1).

At the end of the vulcanization mode of product 33, the bio-locks 17 and 18 are moved along T-shaped guides 19, the output is engaged with the projections 20 and 21 of the side parts and engages with the projections 21 of the base 11. After this, the bottom plate 2 hours the base 11 lowered by the press cylinder. In this case, the profile insert 6 and the forming inserts 22 and 23 are lowered using the upper press cylinder. Since the latter interact with the slats 24 with inclined grooves 25, the inserts 2 /, 23 move down radially from the center of the device and exit from the interaction with the annular the protrusion 29 of the liner 6 with the product 33 (Fig 3).

After that, the liner 6 is raised by the upper power cylinder, and through its valve 31 compressed air is poured to facilitate removal of the product from the liner 6. Then, using the lower power cylinder, the base 11 with the front parts 9 and 10 above the cylindrical liner 5 is lifted through the pushers it is separated from the lower aorta of the article 33. Then the article is removed from the half-rings 4 and 15 and then the device operation cycle repeats.

The proposed device provides high-quality manufacturing of rubber products of complex shape by injection molding and easy extraction of the finished product.

Claims (1)

Invention Formula . A device for making rubber hollow articles, comprising a core with a profile and cylindrical liners mounted with relative axial movement, a detachable mold with half-molds having a connector along the generatrix to the cavity for the cylindrical liner, a hydraulic press with upper and lower plates and located along the axis of the device of the cylinder, characterized in that, in order to expand the technological capabilities of the device, the half-shapes are made of separable ofilnyh side and disc of mechanical parts, the side of which is secured to the upper press plate and Mechanical freedoms but mounted on an annular base, which by means of pushers is connected to the cylinder shaft, and provided with semirings for forming the underside, an article, the cavity for the cylindrical liner is located in the end portions of the half-molds and is made in diameter equal to the cylindrical liner of the core, and the latter is fixed on the bottom plate of the press. 2. An apparatus according to claim 1, characterized in that it is provided with bayonet locks diametrically opposed to be mounted on the end portions of the half-molds, and fixed on the side portions of the half-molds and the base with protrusions for alternating engagement with the bayonet locks. FIG. 2 20 KA-A yy & Phie. t View. five eleven FI.5