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Novel check valve used in injection molding machine

A technology for preventing backflow and injection molding machine, which is applied in the field of new check valves, can solve the problems of complex structure of the check valve and poor flow check effect, etc., and achieve the effect of simple structure and good back flow check effect.

Inactive Publication Date: 2015-10-14
苏州乔布注塑工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually, it is necessary to install an anti-reflux valve at one end of the screw, and the structure of the anti-reflux valve in the prior art is complicated, and the anti-flow effect is poor

Method used

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  • Novel check valve used in injection molding machine

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Embodiment Construction

[0017] Specific embodiments of the present invention will be further described in detail below.

[0018] Such as figure 1 As shown, the present invention includes a cylindrical valve body 4 with a central hole 2, and is characterized in that it also includes an annular through hole 6 axially arranged along the valve body 4, and the annular through hole 6 has the following structure:

[0019] - It is provided with several connecting parts for connecting its inner wall and outer wall;

[0020] - its axial section is at least partially a right-angled trapezoid;

[0021] - It is provided with a slider 8 that can slide along its right-angled side, and the radial maximum area of ​​the slider 8 is smaller than the surface area of ​​the plane where the lower bottom of the section is located.

[0022] As a further improvement of the present invention, the axial section of the annular through hole 6 is a right-angled trapezoid and a rectangle connected to the smallest base of the righ...

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Abstract

The invention discloses a novel check valve used in an injection molding machine. The novel check valve used in the injection molding machine comprises a columnar valve body (4) with a center hole (2), and is characterized by further comprising an annular through hole (6) formed in the axial direction of the valve body (4). The annular through hole (6) is structurally characterized in that multiple connection portions used for connecting the inner wall with the outer wall of the annular through hole are arranged inside the annular through hole, at least part of the axial section of the annular through hole is a right trapezoid, the annular through hole is internally provided with a sliding block (8) which can slide along the right-angled edge, and the maximum radial area of the sliding block (8) is smaller than the superficial area of the plane where the lower bottom of the section is located. The novel check valve used in the injection molding machine solves the problems in the prior art, is simple in structure and has a good check effect.

Description

technical field [0001] The invention relates to a novel non-return valve used in injection molding machines. Background technique [0002] Injection molding machine, also known as injection molding machine or injection machine, is called beer machine (pi ji) in many factories, and injection molding products are called beer pieces. It is the main molding equipment for making thermoplastics or thermosetting materials into various shapes of plastic products with plastic molding molds. Injection molding machines can be divided into vertical type, horizontal type and vertical-horizontal compound type according to the arrangement of injection device and clamping device. [0003] The commonly used injection molding machine in the prior art is a screw injection molding machine. The principle is that when the screw rotates in the barrel, the plastic particles in the barrel are drawn into the screw groove of the screw, and gradually compacted, exhausted, and plasticized. , and const...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/58
CPCB29C45/581
Inventor 程树年
Owner 苏州乔布注塑工业有限公司
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