SU1713823A1 - Casting mould for manufacturing polymer products on rotary conveyer casting machine - Google Patents

Description

The invention relates to the processing of polymer materials in injection molded articles, specifically to molds for thermoplastics, mainly for rotary conveyor injection molding machines.

The purpose of the invention is to simplify the structures and increase the reliability of the form in operation.

Figure 1 shows the proposed form at the time of filling it with the melt, a general view in section; Fig. 2 shows the same at the time of removing the punch with, articles from the die, the section; FIG. 3 shows a punch at the moment of removal of the articles, a slit; figure 4 - section aa in figure 1; Fig. 5 - at the time of the sprue removal, section.

The mold for casting polymeric materials contains a punch 1, in which several decorating signs 2 are placed on the periphery with the possibility of axial movement, on which heads 3 are made. In the central part of the punches 1 there is a coaxial position for the step; On the upper part of the punch 1 B1 FILL the annular groove b, interacting with the alternate gripper 7 (Fig. 2) on the rotor of the opening (not shown). On the punch 1 bevel 9, interacting with the strap TO on the chain of 11 punches. On the Bt-pnaya part of the resetter 4, a STEP 12 is made, which interacts with the catch 13 (FIG. 3) and a rotor is removed. In the matrix 14 there is a central sprue channel | 5 and lower design marks 16. The cavities are formed with cavities 2 and c are formed into products. The central casting channel 15 is connected to the design of the cavity of the products by distributing coughs 17. Column 18 is placed for the mutual fixation of the punches t and 14. For fixing the position 14 relative to the chain 19 of the matrix 14, the bevel 20 . , A centrally ejected channel 22 of the sprue 23, the head 24 of which interacts with the walls of the blind hole 25, is made in the punch 1, is freely placed in the central pilot channel. During the injection, the injection rotor nozzle 26 (center not shown and the protrusion 12 of the ejector 4 rests on the upper abutment 27 of this rotor. On the rotor cleaning matrices on the ejector 22 is affected by the pusher 28.

The form works as follows.

Approach to the injection rotor, the shape closes and melt ter oplast through the nozzle

26 and the central sprue channel 15 partially lifts the ejector 22 up to the stop of its head 24 into the bottom of the blind hole 25 and enters the divorcing channels 17 in

the decorating cavities formed by the indicia 2 of the punch 1 and the indicia 16 of the die 14 (Fig. 1). After the product is designed, the mold fits into the opening rotor (Fig. 2), under

by the action of gripping 7, the punch 1 goes up and the mold is opened. When this occurs, the gate 23 is separated from the products. Products covering the marks 2 of the punch 1. due to shrinkage move with the

they are removed from the matrix cavity.

When approaching the product rotor (FIG. 3), the punch is held in place by retainer 8, and the resetter 4 is gripped by 13

moves upward and, by groove 5 acting on the heads 3, lifts the design marks 2. The articles abut the puncheon are discarded. At the same time the chain 19 of the matrix passes the rotor cleaning (figure 5), where

the pusher 29, acting on the pusher 22, frees the central sprue channel 15 from the sprue 23. Next, the passage of the injection rotor, the die and the punch are closed and the cycle is repeated.

Placing a matrix in a central free-moving aHane free-moving and always-located ejector, limiting this movement to the depth of the blind hole on the poH H H moving the ejector down with a pusher on the cleaning rotor of the dies allows you to repeatedly enter the sprue during operation into the gate. channel of thin rods, which significantly reduces wear

interacting parts, increasing the reliability of work, and simplifies the design of the form. ,

ii, j, -., -.,. . .

Formula Invented and Casting molds for the manufacture of polymer products on a rnorn-conveyor injection molding machine, containing a matrix with a central runner channel, a punch with a coaxially arranged resetter and decorating marks, and a wiper with a head, and with , in order to simplify the design and increase the reliability of the form in operation, the ejector is freely placed in the central sprue channel with the possibility of axial movement, and in the punch there is a blind hole for interacting with the head Ejector pusher and fixing it in the upper position.

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Claims (1)

Formula Injection mold for the manufacture of polymer products on a rotor-conveyor injection molding machine, containing a matrix with a central gate channel, a punch with a coaxially disposed remover and registration marks in it and you .. Jackdaw with a head, I distinguish. " This is due to the fact that, in order to simplify the design and increase the reliability of the mold in operation, the ejector is freely placed in the central gate channel with the possibility of axial movement, and a blind hole is made in the punch to interact with the ejector head and fix it in the upper position. Aa Fi g a