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Demoulding method of LED car light guide bar gas-assisted flexible grading demoulding mechanism

A technology of LED car lights and gas-assisted flexibility, which is applied in the field of molds, can solve the problems of affecting light shape and light intensity, traces of light guide teeth, and damage of light guide teeth, etc., so as to improve the performance of light guide and reduce the driving force. Cost, the effect of ensuring the quality of demoulding

Active Publication Date: 2017-06-13
ZHEJIANG SAIHAO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The injection molding quality of the light guide teeth on the light guide strip is directly related to the light shape and intensity of the lamp. The current demoulding method mainly uses the ejector pin to eject, but because the light guide strip is relatively slender and the light guide strip has a The teeth are relatively dense, and the meshing force with the mold is large, resulting in difficulty in demoulding. Therefore, more ejector pins are required to eject, which is easy to leave ejection marks on the light guide teeth or damage the light guide teeth. The light teeth are deformed, affecting the light shape and light intensity

Method used

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  • Demoulding method of LED car light guide bar gas-assisted flexible grading demoulding mechanism
  • Demoulding method of LED car light guide bar gas-assisted flexible grading demoulding mechanism
  • Demoulding method of LED car light guide bar gas-assisted flexible grading demoulding mechanism

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Effect test

Embodiment 2

[0043] The structure and principle of this embodiment are the same as those of Embodiment 1. The difference is that the limit structure 3 includes a spacer rod 32 fixed on the core fixing plate 25 and a limit screw 31 fixed on the fixed plate 12. A strip hole 33 is opened in the middle of the distance pull rod 32, the limit screw 31 is arranged in the strip hole 33, and a gas-assisted opening button 5 is arranged between the limit screw 31 and the distance pull rod 32. The auxiliary opening button 5 is arranged on the hole wall of the strip hole 33 at the end of the fixed plate 12 , and the gas auxiliary opening button 5 is electrically connected with the high-pressure gas source.

Embodiment 3

[0045] The demolding method of the air-assisted flexible grading demolding mechanism of the LED light guide strip 8 includes the following steps in sequence:

[0046] Step (1): When the movable mold assembly 2 and the fixed mold assembly 1 are just separated, the elastic push-out structure 21 pushes the core fixing plate 25 , and the two ends of the LED light guide strip 8 act on the core fixing plate 25 The bottom is tilted in the direction of the fixed mold assembly 1; the elastic push-out structure 21 drives the core fixing plate 25, and the maximum distance moved along the fixed mold direction is less than or equal to 1 / 3 of the height of the light guide teeth 81 on the LED light guide strip 8 , this setting ensures that the air path between the extension groove 22b and the air guide hole 22a is connected, so that the light guide teeth 81 of the LED light guide bar 8 can be flexibly demolded from the movable mold assembly 2, and at the same time, the LED light guide bar 8 ...

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Abstract

The invention provides a demoulding method of an LED car light guide bar gas-assisted flexible grading demoulding mechanism and belongs to the field of mould technologies. According to the invention, problems such as mold demoulding difficulty, poor quality and the like of existing light guide bars are solved. The demoulding method of the invention comprises the following steps: Step (1): When a movable mold assembly is just separated from a fixed mold assembly, an elastic push-out structure pushes a mold core fixing plate, and two ends of an LED car light guide bar upwarp in the direction of the fixed mold assembly under the action of the mold core fixing plate; Step (2): When the movable mold assembly reaches the maximum mold splitting distance relative to the fixed mold assembly, a limit structure touches the gas-assisted push-out structure to disengage light guide teeth on the LED car light guide bar from the movable mold assembly; and Step (3): A pressure mechanism drives an ejector mechanism to completely separate the LED car light guide bar from the movable mold assembly. Through the three-stage flexible demoulding mode, the light guide bar is separated from the mold step by step, tooth profile of the light guide teeth and surface smoothness of the light guide teeth are guaranteed, and light guide performance and traffic safety of the LED car light are enhanced.

Description

[0001] The present invention is a divisional application of the patent application title "Air-assisted flexible grading and demolding mechanism for LED light guide strips" (patent application number: 201410141712.5, patent application date: April 1, 2014). technical field [0002] The invention belongs to the technical field of molds, and relates to a demoulding method of a gas-assisted flexible grading demoulding mechanism for LED light guide strips. Background technique [0003] "Light guide light" is a new type of car light that is more advanced than LED array lights. The light uses the light guide performance of professional plastic PMMA, uses a point light source, and is refracted by the light guide. The light strip is emitted, and the intensity and color of the light are changed according to the light source, which is not only beautiful and practical, but also energy-saving and environmentally friendly. The injection molding quality of the light guide teeth on the ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/40B29C45/33
CPCB29C45/33B29C45/4005B29C2045/4068
Inventor 李金国
Owner ZHEJIANG SAIHAO IND CO LTD