SU1650467A1 - Casting mould for manufacture of polymeric products - Google Patents

Abstract

The invention relates to injection molds for the manufacture of polymeric products. The purpose of the invention is to enable the manufacture of articles of the type of auger with a thorium flange, a hollow screw protrusion and a blind hole in the rod on the opposite side. For this, the matrix is made composite on the top, forming a helical protrusion of the surface. The first semi-matrix 2 and the pushing plate 6 are rotatably mounted, the central disk 8 is placed in the pushing plates, and the product turning mechanism is provided with an additional lead screw 10 fixed in the sprue plate. Both screws are kinematically connected respectively to the plates of the pushing and the central sign and the second 3 semi-matrix. When the shape is opened, the second semi-matrix 3 and the central disk are unscrewed from the product, which is then removed from the form by the ejector. 3 il. ga 2 yo oh. (L 8 O VI

Description

The invention relates to a tooling for the processing of polymeric materials and can be used for the manufacture of screw products.

 The aim of the invention is to enable the manufacture of articles such as a screw with an end flange, a hollow screw protrusion and a blind hole in the rod on the opposite side.

Figure 1 shows the casting mold, the section; figure 2 - the same plan; fig. 3 - the same, in the expanded state.

The casting mold contains a gating plate 1, a composite matrix made of semi-matrices 2 and 3, the first of which is located on the gating plate 1, and the second is rotatably mounted in the intermediate plate 4, a wrenching mechanism including a running screw associated with the gating plate 1 5, a pusher system with pusher plates 6 and pushers 7, a center mark 8 and a base 9. The matrix is made integral on the top of the screw surface, and the first semi-matrix 2 and pusher plate 6 are installed with POSSIBILITY rotating and screwing mechanism is provided with additional products lead screw 10 fixed at the base 9, and two screws 5 and 10 are kinematically coupled, respectively, the second jaws and the central mark and the pushing plates 6. Both semi-matrices are covered by a conical holder 11 mounted on a runner plate 1.

The half-matrix 2 is rigidly connected to the end of the disk 12 mounted on the rolling supports 13 in the fixed gating plate 1, the half-matrix 3 is fixed in the unscrewing ring gear 14 and is placed between the supporting rollers 16 freely mounted on the guide columns 17 centrally through the ring guides 15. the sign 8 is located coaxially with the disk 12, is made integral with the gear gear 18, the gear 19 coupled with the nut, fixed in the fixed gating plate 1 of the additional spindle 10 and has stepped through holes Versti 20 with counterparts of ejectors 7 placed in them, and ejector plate 6 is connected with a rotatable return mechanism installed at the base 9 consisting of a pusher 21 equipped with a socket 22 with a ball-lock 23 with balls 24 on which the plate rests 6, the shank 25 with the groove 26 and the sleeve 27 with an annular groove 28 fixed in the base 9. The central symbol 8 is provided with a screw protrusion 29 that forms the cavity inside the screw protrusion of the part.

Casting form works as follows.

After filing the polymer material and

holding under pressure and cooling, the mold is opened.

In this case, the movable part of the form departs from the fixed.

Initially, a connector is made between the two parts 2 and 3 of the die, with the spindle screws 5 and 10 choosing idling since they are spring-loaded, which provides a soft load on the gear nuts.

With a further connector of the form due to the tg installed in the sprue plate 1 and interacting with the intermediate plate 4, a part of the product begins to unscrew from the space between the flange and the pen of the product.

3 dies due to the fact that it is fixed in the unscrewing gear rim 14 and at the same time moving relative to the movable part along guide columns 17 together with the rollers 16 due to the fact that

the pitch of the spindle screws and the pitch of the screw auger is the same.

At the same time rotating in the opposite direction, the center mark 8 is unscrewed from the product, and the plate

The 6 tusks, together with the ejectors 7, rotate. During the further course through the shank 25, the ejection system works and the ejector 7, rotating together with the central sign 8, drops the product.

The closure of the mold is carried out in reverse order, with the ejector 7 returning together with the plate 6, since the shank is constantly connected with the stop of the injection molding machine.

Claims (1)

Invention Casting mold for the manufacture of polymer products, containing Gating a slab, a composite matrix made of semi-matrixes, the first of which is located on the gating plate, and the second is rotatably mounted in the intermediate plate, a product wringing mechanism, including a lead screw connected to the gating plate, a pushing system with pushers of ejectors, central sign, base, characterized in that. with the aim of enabling the manufacture of products such as a screw with an end flange, a hollow screw protrusion and a blind hole in the rod on the opposite side, the matrix is made composite on the top, forming a screw protrusion the first semi-matrix of the pushing plate and the central mark are rotatably mounted, and the wrenching mechanism is provided with at the base and kinematically connected with the second semi-matrix, with the main spindle screw being kinematically connected with the central sign and sense plates the additional running screw, is fixed - 5. 17 sixteen 2 shn