SU1514631A2 - Casting mould for polymeric articles - Google Patents

Description

The invention relates to a device for processing plastics by the method of injection molding, in particular to the manufacture of products mnogostnoy snap-in with diverters of finished products, and is uso2

Cultivation of the mold on auth. St. No. 861073. The goal is to improve the reliability of the form by ensuring a guaranteed return of the drop bar to its original position and the improvement of working conditions. To this end, the injection mold is equipped with a double-sided four-bearing hinge, the ratchet 12 of which consists of three links moving in the same plane relative to each other. Ratchet 12 is rigidly mounted on the sleeve. The crank 14 is made at an obtuse angle relative to the sinking of the bar 13. The wedge is placed on the fixed plate 1 with the ability to interact with the connecting rod 15 of the four-berth.

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The invention relates to devices for

plastic processing with a method under pressure, in particular to the manufacture of products

multisite equipment with diverters

finished products.

The purpose of the invention is to improve the reliability of the form due to the guaranteed return of the drop bar to its original position and improvement of working conditions.

FIG. 1 shows the injection mold, section; in fig. 2 - movable half-form, plan view; in fig. 3 - diagram of the installation and operation of the wedge.

Casting form contains a stationary plate 1 associated with a plate of dies 2, a movable plate 3 on which a plate of punches 4 is fixed, a plate 5 of removal connected by rods 6 with an ejection plate 7 moving along guide columns 8, shaft 9, sleeve 10 with pins 11 and a ratchet 12, with a rigidly fixed dropping strap 13 and a crank 14, which together with the connecting rod 15 and the rocker 16 form a two-root hinge four-bearing, and a wedge 17.

The shaft 9 with four longitudinal slots is fixed in the plate of the punches 4. The sleeve 10 with two pins 11 is rotatably mounted in the plate 5 of the plate. On the sleeve 10 is installed ratchet 12, made in the form of a sleeve with two protrusions under the blunt fragile (optimal angle of 135 °). One protrusion is a drop bar 13, and the other is a crank 14, pivotally connected to the connecting rod 15 and the rocker 16, which is fixed on the plate 5 is removed.

four

On the fixed plate is attached with the ability to adjust the wedge 17.

Injection form works as follows.

At the time of opening of the molds, the ejection plate 7 stops the plate 5 from removal, and the movable plate 3 with the plate of punches 4 continues to move. The shaft 9 is moved with them. The pins 1 1 pass through the grooves of the shaft 9 and, moving from straight sections into screw ones with right-hand winding, turn the reset bar 13, which resembles the stuck parts, into the container 90 ° clockwise. When this crank 14 of the ratchet 12 raises the connecting rod 15, which due to the attached rocker 16 makes a plane-parallel movement.

When the mold is closed due to the interaction of the wedge 17 and the connecting rod 15, the ratchet 12 rotates in the opposite direction20, forcibly returning the resetting bar 13 to its original position.

Claims (2)

Claim 25 Injection mold for polymer products according to ed. St. No. 861073, distinguished by the fact that, in order to increase the reliability of the work of the mold and to improve working conditions, it is equipped with a two-comforter four-link hinge, whose ratchet consisting 30 of three parts moving in the same plane relative to each other, rigidly mounted on the sleeve, and the crank is made at an obtuse angle relative to the resetting bar, and a wedge placed on the fixed plate with the ability to interact with the connecting rod four-bar. in ^ύ 5 fig 1 2 1 1514631