SU761271A1 - Mould for making polymeric articles by injection moulding - Google Patents

Description

The invention relates to the processing of plastics, in particular to the manufacture of equipment for the production of products with holes in the plane perpendicular to the plane of the connector.

The invention can be used in instrumentation, radio and foundry.

Known mold for injection molding of plastic products containing mobile and fixed half-molds. An axis on which the grip is fixed is mounted in the movable half-form, a copier is fixed on the fixed half-form [1].

The closest technical solution is the injection mold for the manufacture of polymer products by injection molding, containing a fixed plate, movable plates of the matrix and punch and lock, including a lever mounted on a fixed plate with a grip and stop [2].

In known forms used traction

and copiers, the presence of which increases the metal form.

The purpose of the invention is to reduce the metal form.

2

This goal is achieved by the fact that the injection mold for the manufacture of polymer products by injection molding, containing a stationary plate, movable matrix and punch plates and a lock that includes a lever fixed to the fixed plate with a grip and an emphasis, provided with an additional support fixed on the matrix plate and interacting with with a lever stop and a locking element / pivotally mounted on the plate of the punch.

FIG. 1 shows the form, the general form; ' in fig. 2 - section A — A in FIG. one.

The injection mold contains a fixed plate 1, a movable plate 2 connected to the plate of the punch 3, a movable plate mat ^{15 of the} die 4, placed between the matrix and punch plates of the slider 5, the groove of which includes an inclined finger 6 fixed on the plate 1. plate 1 has a wedge 7 installed. The lock of the form is made 20 in the form of lever 8 installed on plate 1 with a gripper 9 and an emphasis 10, an additional emphasis 11 fixed on the plate of the matrix 4, and a lever interacting with an additional emphasis and an emphasis

³

element 12, pivotally mounted on an axis 13 in the plate of the punch 3. For forming a hole in the product, a forming mark 44 is installed in the slider. To eject the products, the ejector plates 16 are placed in the plates 15.

The form works as follows.

After injection of polymers into the forming cavity and the corresponding shutter speed, the form is opened along the I – I plane. The movable plate 2 and the punch plate 3 associated with it move away from the fixed plate I. Together with the punch plate, the matrix plate 4 moves, which are interconnected by a lock, since the locking element is in contact with an additional stop 11.

When moving the movable plates from the fixed wedge 7 comes out of the slide, freeing it, and the inclined finger 6 moves the slide and removes the forming mark 14 from the product. As the moving plates move, the stop 10 approaches the locking element 12, rotates it, and the locking element comes out of contact with the stop 11. Then the grip 9 of the lever 8 encounters an additional stop и1 and the shape opens along the plane II — II between the punch and die plates . The plate of the matrix 4 stops, and the plate of the punch 3 continues to move and the ejectors remove the product from the mold. After removing the product form is closed and the cycle repeats.

four

The proposed lock can be installed individually after the form has been assembled, which greatly facilitates the replacement of worn-out parts of the lock and, accordingly, reduces the Time for repair. In addition, this lock can be used on injection molds.

non-ferrous alloys.

Claims (1)

Claim ten Injection molding form for the manufacture of polymer products by injection molding, containing a fixed plate, movable matrix plates and a punch and a lock, including a lever fixed on the fixed plate ¹⁵ with a grip and stop, characterized in that in order to reduce metal. loemkosti form, it is provided with a plate fixed to the matrices and the additional abutment cooperating with it and upo ₂₀ rum lever locking element pivotally installed on the punch plate.