SU923855A1 - Portable injection mould for producing polymeric material articles - Google Patents

Description

The invention relates to a device for the processing of polymeric materials into products, in particular, to portable molds used in automatic lines.

A remote mold is known that contains a die, a punch and a locking device, including spring-loaded grippers and power cup springs [1].

The disadvantage of this mold is the need to preserve and open it with a press, which makes it impossible to carry out the pressing and complicates the equipment.

Closest to the proposed is an external mold containing the top plate with a fixed ·? · Ny in her punch, the bottom plate with the matrix, guide columns with grooves at the ends and locking device, including a spring-loaded locking element that interacts with the grooves of the guide columns £ 23 .

.This mold has a complex design of the locking device and it is difficult to carry out the pressing ·, which are necessary for the manufacture of thick-walled and complex configuration of products.

2

The purpose of the invention is to simplify the design.

This goal is achieved by the fact that in a mold containing an upper plate with a punch fixed in it, a lower plate with a matrix, guide columns with grooves at the ends and a locking device including a spring-loaded locking element interacting with the slots of the guide columns, according to the invention, the locking element is designed as a rotary plate with through mating holes, in which guide columns are placed, with the diameter of one of the holes being larger than the diameter of the guide columns, and the diameter of It is smaller than the diameter of the guide columns.

FIG. 1 shows the proposed mold, a front view with a partial cut; in fig. 2 is a top view with a partial cut.

The mold contains the top plate 1 sec. fixed in it by a Poisson 2, an intermediate lower plate 3, in which the matrix 4 is installed, support plates 5 and 6 and a heating plate 7, rae30 messed up on the plate 3.

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In the top plate 1 and the plate '7 of the heating, induction nododers 8 are mounted. On the centering columns 9, fixed in support plates b and 6, three sets of disk springs 10 are installed. The automatic locking device includes three guide columns 11 fixed in the top plate 1 and having grooves 12 at the ends, a locking element made in the form of a rotary plate 13, under- 10 by a spring-loaded cylindrical tension spring 14. Swivel plate 13 is installed in the lower part of the mold. Three holes 15 are made in it, through which the guide columns 11 pass freely through 15, the three holes 16 associated with the holes 15, having a diameter corresponding to the diameter of the grooves 12 on the guide columns 11 ”Rotary plate 13 20

has a tail 17. In the support plates fixed shoe 18.

The mold works as follows.

When the mold is closed, the force P of the external drive acts on the shoe 18 from below. The mold of the upper plate 1 rests in the upper rail of the frame (not shown) of the pressing unit. When this disc springs 10 are compressed, the rotary plate 13 under the action of the spring 14 rotates around a vertical axis of the mold at a certain angle and enters the slots 12 of the guide columns 11. Thus, the upper and 35 lower parts of the mold are connected to one system through Cup springs 10.

When opening the mold, the force P of the external drive acts from below 40 on the shoe 18 of the mold, which is supported by the upper plate 1 against the upper traverse of the bed of the pressing unit. The disc springs 10 are compressed, releasing the fixing plate 45 13. The latter, under the action of the external drive P ^, rotates a certain angle to its shank 17 and is withdrawn from the slots 12 of the columns 11. After the force is removed from below, the disc springs 10 straighten out, lifting the upper part molds with guide columns 11 fixed in it. The rotary plate 13, resting on the side walls of the cylindrical surface of the columns 11, cannot drop into the grooves 12.

PrEss form prepared for further disclosure. Then the cycle repeats.

The use of the proposed mold in automatic pressing lines allows the pressing in the process of holding the product in the mold, which improves the quality of thick-walled and complex-shaped products.

Claims (1)

Claim Portable mold for the manufacture of products from polymeric materials, containing the top plate with a punch fixed in it, the bottom plate with a matrix, guide columns with grooves at the ends and locking. a device including a spring-loaded locking element that interacts with the grooves of the guide columns, characterized in that, in order to simplify the design, the locking element is made in the form of a rotary plate with through mating holes in which the guide columns are placed, and the diameter of one of the holes exceeds the diameter of the guide columns and the diameter of the other hole is smaller than the diameter of the guide columns.