SU1435468A1 - Mould for making polymeric articles with internal thread - Google Patents

Abstract

This invention relates to injection molds for the manufacture of polymeric articles with internal threads. The purpose of the invention is to improve the quality of products. For this, the mold is provided with a transversely mounted ferrule in which the threaded sectors 0 are installed. The locking clip located in the intermediate plate is fixed on a slider with a wedge element 1 carbon copy to interact with the clips and straps 17 to connect the clip to the slider 3 with a wedge element on which additional columns 8 are fixed with threaded sectors 10. When the mold is opened, the wedge element II is removed from the material and, under the additional columns 8, are removed threaded sectors 10, which are interchanged strictly perpendicular to the axis of the threaded portion of the product. The yoke 14 is held in place by the retainer until the threaded sectors are completely removed from the product, after which the retainer is retracted by the coir thread:. releasing the yoke 14. Thus, the movement of the threaded is made, the mountains 10 are strictly perpendicular to the axis of the product, which is removed completely removed ,; thread sectors 10 .. that G1functions: io- damage to the thread. 8 nl. g% f

Description

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The invention relates to tooling for the manufacture of polymeric products with internal thread, to polymer processing and can be used to produce products of complex configuration. Types of straight branch pipes, branch pipes with branches, nuts, etc.

The purpose of the invention is to improve the quality of products.

FIG. 1 shows the proposed form, a cross-section; in fig. 2 - the same, longitudinal section; in fig. 3 is a section A-A in FIG. one; in fig. 4 is a section BB in FIG. 3; in fig. 5 is a sectional view BB in FIG. 3; in fig. 6-8 - casting mold, cuts.

Casting mold contains fixed casting plate 1 with inclined columns 2 for moving sliders 3 and 4, intermediate plate 5, plate 6 with ejector 7, additional columns 8 for moving sliders 9 with threaded sectors 10, wedge element 11 for fixing threaded sectors 10 located coaxially with the wedge element 1i, the registration symbol 12.

The wedge element 11 is fixed on the slider 3, on the slider 4 - the decal 13 (not shown).

The form is equipped with a transversely mounted yoke 14, in which threaded sectors 10 are installed, located in the intermediate plate 5, a latch 15 of the yoke 14, a copying bar 16 attached to the slider 3 for interacting with the locking lugs and a yoke 17 for connecting the yoke 14 with a slider 3, on which additional columns 8 are fixed for changing the sliders 9.

The latch 15 is made in two stages: one stage in the form of an isosceles triangular prism 18 for interacting with a copier bar 16, and the second in the form of a straight triangular prism 19 forming a protrusion for interacting with the yoke 14.

A return wedge 20 and a return strap 21 are provided for returning the ejector 7.

The form works as follows.

After feeding the polymer melt and technological exposure, the mold is opened, during which slider 3 removes wedge element 11 from the product, and under the action of additional columns 8 and slider 9, threaded sectors 10 are removed, which move strictly perpendicular to the axis of the threaded part of the product. In this case, the protrusion 19 of the latch 15 holds the holder 14 in the source m.

position until the complete release of the threaded sectors 10 from engagement with; and the product, after which the protrusion 19 of the retainer 15 is pressed down by the trapezoidal tide of the passer bar 16, releasing the holder 14. At the same time, the designating mark 13 is removed from the product.

With the further progress of the slide 3 t hectares 17 moves the ferrule 14 behind to complete removal of the threaded sectors 10 from the cavity.

Upon further movement of the movable part of the mold, the shank stops by focusing on the molding machine, and the ejector 7 removes the product. During the closure of the mold with the start of movement of the slide 4, the bevel of the return bar 21 interacts with the return bevel of the wedge 20, lift the return wedge over the return bar 21 until the return wedge is above the bar 22 {fig. 2). In this case, the ejector is retracted to the initial position that the claim is. damages its damage by a sign 12..

Thus, the movement of the threaded sectors is strictly perpendicular to the axis of the product, which is pushed out after the complete removal of the threaded sectors, which exclude damage to the 1st thread.

Claims (1)

Invention Formula Casting mold for the manufacture of polymeric articles with internal thread, containing a fixed gating plate with inclined columns for moving the sliders, an intermediate plate, complementary columns for moving the sliders with threaded sectors, a wedge element for fixing the threaded sectors, a coaxially wedging element forming the sign and an ejecting element for fixing the threaded sectors. , characterized in that, in order to increase product quality on one of the sliders fixed wedge element, and on the other - a decorating sign, while the form is equipped with a transversely mounted clip, in which threaded sectors are installed with a retainer in the intermediate plate, a holder mounted on a slider with a wedge element with a copier bar for interacting with a retainer and straps for connecting the holder with a slider with a wedge element on which additional columns are fixed for changing 1, sliders with threaded sectors. b 7 . g 9i, 2.3 5-6 15 9gL f 17 11 i4 10 8-B 9y.g, .5 ig.b Editor I. Gorna Order 5598/1 6 with leave.; -. S. Shopi.ch Proofreader V., Poshisnoe Tehred I. Veres Circulation 55E VNIIPI USSR State Committee on Inventions and Discoveries  13035, Moscow, F - 35, Rauy sk. Nab., 4/5 Production and printing company, Uzhgorod, c. Project, 4 FIG. with leave.; -. S. Shopi.ch Proofreader V., Poshisnoe