SU1131669A1 - Mold for making polymeric products - Google Patents

Abstract

1. A CASTING FORM FOR THE MANUFACTURE OF POLYMER-ISOLES, containing a vibrator and decorating plates, placed on a meldued plate. with a sprue bushing and a base plate, in order to reduce the vibration load on the elements of the form: in order to increase its service life, the design plates are installed with the possibility of joint plane parallel displacement relative to the sprue and base plates. (L with & d Od did I; D

Description

2. Casting mold according to claim 1, characterized in that the decoration plates are provided with ball bearings mounted on the sides facing respectively the gating and supporting

plates, and are spring-loaded in the direction of their movement, and the vibrator is made in the form of a chamber with a channel for supplying compressed air and a ball placed inside the chamber.

The invention relates to the processing of polymeric materials, in particular, to injection molds for the manufacture of polymer products with a vibration effect on the melt. The closest in technical support and the achieved result to the proposed is a mold for the manufacture of polymeric products, containing a vibrator and decorating plates placed between the litnik slab with sprue bushing and base plate lj. The known casting mold wears out quickly due to the high vibration loads on the mold elements, especially when the oscillation amplitude of the vibrating base plate is higher. In addition, the casting mold has a larger size, since the vibrating plate has a separate drive, which is larger than the dimensions of the mold. The purpose of the invention is to reduce the vibration load on the mold elements to increase its service life. This goal is achieved by the fact that, in a mold for the manufacture of polymer products containing a vibrator and decorating plates, placed between the sprue plate with the spherical bushing and the base plate, the decorating plates are installed with the possibility of a joint flat parallel displacement relative to the sprue and base plate. In addition, the decoration plates with ball bearings mounted on the sides facing the gating and support plates, respectively, are spring-loaded in the direction of their movement, and the vibrator is made in the form of a chamber with a channel for supplying compressed air and placed inside the chamber by a ball . The drawing shows a casting mold, a section. The casting mold contains a vibrator and decorating plates 1 and 2 placed between the spruing plate 3 with the sprue bushing 4 and the base plate 5. The shaping plates 1 and 2 are mounted with the possibility of joint parallel-parallel movement relative to the sprue 3 and the supporting 5 plates, which are equipped with ball bearings 6, mounted on the sides facing respectively the gating and support plates. The unbalance vibrator is made in the form of a chamber consisting of half-rings 7 and 8 with a channel for supplying compressed air and a ball 9 placed inside the chamber. The chamber is located in the decoration plate 2. The decoration plates 1 and 2 are slit in the direction of their movement respectively in cages 10 and 11, - and to ensure their alignment, guide columns 12 are provided. Between the base 13 and the base plate 5 there are plates of an ejector-pressing system 14 with counter-pushers 15. The form works as follows. After the injection of the polymer melt material into the chamber, compressed air is supplied, as a result, the ball 9 creates vibration pulses, under the influence of which the decorating plates 1 and 2 perform a flat parallel movement on the ball bearings 6 .. As the decoration plate 2 is coupled to the sprue bushing 4 then no melt loss occurs. This is facilitated by the smaller diameter of the gate channel in the gate sleeve 4 9 compared with the diameter of the channel in the decoration plate 2.

31131669.4

After the technological extractor includes the vibratory effect on the cooling axis, the form is expanded, the tonal elements of the form. This also removes the joints from it. Vibration insulation of the

Ensuring the possibility of flat-pa- 5 Installation of the vibrator by direct-direct joint movement of HL in the decorating plate reduces gaoform plates on the ball bearings and isbrites of the form.

slabs by putting them under spring.

Claims (2)

1. INJECTION FORM FOR PRODUCTION OF POLYMERIC * PRODUCTS, containing a vibrator and forming plates placed between the sprue plate. with a sprue sleeve and a base plate, characterized in that, in order to reduce the vibration load on the mold elements to increase its service life, the forming plates are installed with the possibility of joint, parallel movement relative to the sprue and base plates. 2. Injection mold in π. 1, characterized in that the forming plates are equipped with ball bearings mounted on the sides facing the gate and base plates, respectively, and are spring-loaded in the direction of their movement, and the vibrator is made in the form of a chamber with a channel for supplying compressed air and a ball placed inside the chamber.