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Valve needle guide sleeve

A technology of guide sleeve and valve needle, which is applied in the field of valve needle guide sleeve and valve needle guide sleeve, which can solve the problems of guide sleeve glue seepage, small deformation, guide sleeve wear, etc., to avoid glue seepage , Reduce wear effect

Inactive Publication Date: 2014-01-15
严杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The guide sleeve of the existing valve needle is a hanger, and the length of the valve needle matching hole is close to the thickness of the hanger. If the hanger is too thick, the deformation is small, and the valve needle is easily stuck inside; It is not long enough, and it will wear the diversion sleeve during work, causing the diversion sleeve to seep glue

Method used

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  • Valve needle guide sleeve

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Embodiment Construction

[0011] The present invention is described below in conjunction with accompanying drawing.

[0012] Such as figure 1 As shown, a valve needle guide sleeve according to the present invention includes a sleeve 1 and a fixing seat 2; the sleeve 1 is provided with a valve needle matching hole 3; Rear end; the fixing seat 2 is provided with a hoisting screw hole 4 and a plurality of fixing holes 5; On the same straight line; the inner diameter of the hoisting screw hole 4 is larger than the diameter of the valve pin matching hole 3 .

[0013] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

[0014] The valve needle diversion sleeve of the present invention is divided into two parts as a sleeve 1 and a fixed seat 2 as a whole. The length of the sleeve 1 can ensure the matching requirements of the valve needle matching hole 3 and the valve needle, reduce wear and avoid glue seepage; Th...

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Abstract

The invention discloses a valve needle guide sleeve which comprises a sleeve and a fixing seat, wherein a valve needle matching hole is formed in the sleeve; the fixing seat is arranged at the rear end of the sleeve; a hoisting screw hole and a plurality of fixing holes are formed in the fixing seat; the valve needle matching hole is communicated with the hoisting screw hole, and axes of the valve needle matching hole and the hoisting screw hole are positioned on the same line. According to the valve needle guide sleeve, the whole valve needle guide sleeve is divided into two parts, namely the sleeve and the fixing seat, the matching requirement of the valve needle matching hole and the valve needle can be met according to length of the sleeve, the wear is reduced, and adhesive impregnation is avoided. Moreover, the wall thickness of the fixing seat is reduced, and a certain yield space is formed between the hoisting screw hole and the valve needle matching hole, so that the whole valve needle guide sleeve has a certain elastic deformation. When the valve needle works to generate micro offset, the valve needle is prevented from being clamped by the guide sleeve.

Description

technical field [0001] The invention relates to a valve needle guide sleeve, in particular to a valve needle guide sleeve with high matching degree and not easy to be stuck, and belongs to the technical field of hot runner system components. Background technique [0002] The guide sleeve of the existing valve needle is a hanger, and the length of the valve needle matching hole is close to the thickness of the hanger. If the hanger is too thick, the deformation is small, and the valve needle is easily stuck inside; It is not long enough, and it will wear the diversion sleeve during work, causing the diversion sleeve to bleed. Contents of the invention [0003] In view of the above-mentioned technical problems, the purpose of the present invention is to propose a valve needle guide sleeve with a high degree of fit and not easy to be stuck. [0004] The technical solution of the present invention is realized in the following way: a valve needle guide sleeve, including a slee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/28
CPCB29C45/2806
Inventor 严杰
Owner 严杰
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