SU1313726A1 - Casting mould for manufacturing polymeric articles (versions) - Google Patents

Abstract

This invention relates to the processing of polymeric materials. The aim of the invention is to expand the technological capabilities of the injection mold by manufacturing bearing cages with radial and axially directed windows under the rolling bodies. For this, the form contains a cooled 1 case, partially encompassing a core mounted drum with decorating elements and a partition which is pulled out of the drum. The removal mechanism is made in the form of a spiral protrusion in the housing of the radial movement of the product, at the end of which an element with a helical guide surface is made. When the drum rotates, the product divided by the partition slides on a spiral-shaped protrusion and, moving in the radial direction, rises above the shaping elements. Then, sliding onto the element with the helical guide surface is axially retracted and removed from the mold. The removal mechanism can be performed with a flange on which spring-loaded ejector pins are installed, chi. As the drum rotates, the pushers interact with the cop-ring and gradually move the workpieces in axial direction. 2 sec. clause f-ly 7 ill. i (L OO SO y O5

Description

The invention relates to the field of processing of polymeric materials and can be used for the manufacture of injection-molded polymer products using a continuous method, in particular for the manufacture of rolling bearing cages.

The purpose of the invention is to expand the technological capabilities of the mold by manufacturing bearing cages with radial and axially running windows under the rolling bodies.

FIG. Figure 1 shows a casting mold for the manufacture of bearing cages with radially formed windows under the rolling bodies, a general view (section B-B in Fig. 2, option 1); in fig. 2 is a section A-A in FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 - injection mold for the manufacture of separators of the subtype - NIKOV with axially formed windows under the rolling elements, a general view (variant 2); in fig. 5 - billet roller bearing separator; in fig. 6 - the same, the thrust bearing; in fig. 7 - semi-separator blank of a radial ball bearing with rivet holes. The casting mold contains a cooled body 1 with a sprue channel 2 and a cooled cavity 3, the body 1 concentrically encompassing a part of the drum 4 installed on the axis with the design elements 5, the partition 6 extending from the drum 4.

The removal mechanism (option 1) for the manufacture of bearing cages with radially formed windows for rolling bodies on the casing 1 is in the form of a spiral-shaped protrusion 7, at the end of which the element 8 is made with a helical direction of the surface.

The removal mechanism (option 2) for manufacturing bearing blanks with axially formed windows for rolling bodies includes a flange 4 on the drum 4, on which pins 10 are installed to form rivet holes and spring-loaded ejector 11, which interacts with the screw surface of the copier rings 12, made on the injection molding machine.

Casting form works as follows.

The polymer melt is continuously fed through the sprue channel 2 into the forming cavity between the housing 1 and the drum 4 with the decorating elements 5, while the drum 4 rotates in a protational flow rate of the melt. In the pouring zone of the drum 4, the partition 6 is advanced,

separating the product and forming its ends with a lock, for example, in the form of a dovetail, with which the product is subsequently looped into a separator

podshipnika. As the drum 4 rotates, the product is cooled and the partition 6 is retracted into the drum, and the product (option 1) slides over the spiral-shaped protrusion 7, moves in the radial direction and rises above the design elements 5, and then is retracted in the axial direction and removed from the mold , slide onto element 8 with a helical guide surface.

Removing the billets of separators of supports with axially made windows under the rolling bodies (option 2) is performed by means of spring-loaded ejectors 11 installed in the flange 9, when they interact with the surface of the copier ring 12 due to the sequential

0 advancement of the pushers 11 which abut against the workpiece and gradually move it in the axial direction. After removal of the workpiece, the ejector 11 is removed inside the flange 8.

Claims (2)

1. A casting mold for the manufacture of polymer products, comprising a cooled housing with a gating channel, a drum mounted on the axle housing with decorating elements and an article removal mechanism characterized in that, in order to expand the technological capabilities of the mold by manufacturing bearing separators with performed in radial 5, by the windows under the rolling bodies, the lifting mechanism is made in the form of a spiral-shaped protrusion in the housing for radial movement of the product, while at the end of the protrusion there is an element with a helical guide surface for axial movement product bins. 2. A mold for the manufacture of polymer products, comprising a cooled body with a sprue channel, a drum with g design elements and a mechanism for removing the product, characterized in that, in order to expand technological capabilities by manufacturing billets of bearing cages with axially formed windows under the rolling elements, the drum is made with a flange, and the removal mechanism is made in the form of a spring-loaded ejector flange and a copier ring fixed in the housing for interaction with the ejector. .g A a ig.2 fpus.1 View 5 fie. 3 ten f Srig.5 srig.b FIG. 7 Compiled by B. Momushkin Editor M. Kelemesh Order 1997/19 Tehred I. Veres Circulation 565 VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and ioligraficheskaya G1relg tie, Uzhgorod, ul. Project, 4 Proofreader S. Cherni Subscription