Method for improving auto-lamp moulds

A car lamp mold and mold technology, which is applied in the field of mold improvement, can solve the problems that affect the product qualification rate, poor cooling effect, easy deformation of the mold, etc., and achieve the effects of avoiding appearance damage, saving material costs, and improving yield

Inactive Publication Date: 2011-03-23
BILL ANDA SHANGHAI LUBRICATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lubricating oil will become liquid under the action of high temperature, and it is easy to splash on the mirror surface of the mold to cause oil spots, which affects the product qualification rate
However, if no lubricating oil is added, the top block and slider are easy to bite and even seriously damage the mold
[0005] In addition, during the processing of the lamp tube, due to the thin wall of the lamp tube, it is easy to deform during demoulding; the radial direction is deep, and the end is far away from the cooling water channel of the mold, and the cooling effect is poor, so that the mold is easily deformed under the pulling force of demoulding
Greatly affect the yield and production schedule
Especially when processing lamp tubes with fine lines, the hooking and deformation of the product are particularly obvious, resulting in a high scrap rate

Method used

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  • Method for improving auto-lamp moulds
  • Method for improving auto-lamp moulds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Improvement of the top block and slider of the lamp mold

[0016] The lubricating oil applied on the top block and small slider of the lamp mold will become liquid under the action of high temperature, and it is easy to splash on the mirror surface of the mold to cause oil spots on the finished product, which affects the product qualification rate. However, if no lubricating oil is added, the top block and slider are easy to bite to death or even seriously damage the mold.

[0017] Using MEVVA source ion implantation technology, coating WS on the top block and small slider of the mold 2 Coating film with a film thickness of 2 nm. In this way, the top block and slider of the mold do not need to be refueled, and can be directly installed on the mold. The treated slider still works normally without lubricating oil, and there will be no oil spots because no lubricating oil is applied. Happened, the product qualification rate has been improved.

Embodiment 2

[0018] Embodiment 2: the improvement of mold mirror surface

[0019] The mirror surface of the mold is the part of the mold used to process the surface of the high-gloss product, which has very high requirements for reflection and light distribution. WS made by common physical vapor deposition method 2 The thickness of the lubricating film is 1 micron, so the products processed by the mirror surface of the coating will be gray, which cannot meet the requirements of mirror surface processing, and cannot be put into production at all.

[0020] Using MEVVA source ion implantation technology, coating WS on the mold mirror surface 2 2 Coating film 1 with a film thickness of 8 nm. Drape WS 2 After coating the film, on the one hand the WS 2 The solid lubricating effect of the coating film reduces the pulling force during demoulding, and the processed car lamp parts will not have fluff and silk flow, which improves the yield; and the optimized film thickness ensures the matching o...

Embodiment 3

[0021] Embodiment 3: The mold improvement of processing car light plutonium rim grain surface

[0022] Using a common mold to process the car light plutonium ring through injection molding, there are deformation and hooks at one end of the light plutonium ring, and 80% of the waste products are due to hooks. The present invention provides a mold improvement method for processing car lamp skin pattern lamp decoration ring, adopts MEVVA source ion implantation technology on the mold inner wall 2, and coats it with WS 2 Coating film 1, the film thickness is 6 nm. Coat the surface of the mold with WS 2 After coating the film, the deformation phenomenon and the hooking problem are solved. The qualified rate of finished products has increased from an average of 82% to 97%.

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Abstract

The invention discloses a method for improving auto-lamp moulds, which solves the problems of napping, filament flow and deformation of auto-lamp fittings in the process of processing, thereby reducing the rejection ratio of the auto-lamp fittings; and prolonging the service time of the moulds. Through coating a WS2 solid lubricating film on an auto-lamp mould and optimizing the coating thickness, the invention provides a method especially suitable for improving auto-lamp moulds. The method disclosed in invention has the advantages of improving the finished product ratio of auto-lamp fittings subjected to model processing, saving the cost and improving the production efficiency.

Description

technical field [0001] The invention relates to an improvement method of a mould, in particular to an improvement of a car lamp mould. Background technique [0002] At present, liquid lubricants are commonly used in the industry, which are coated on the metal surfaces of instruments for lubrication. With the development of science and technology and the increase of machine types, it is often difficult for grease lubricants to meet the requirements, mainly because grease lubricants are difficult to play a role for a long time under high temperature conditions, or even lose their effect. [0003] In the past 30 years, the international community has attached great importance to the research and production of solid lubricating materials. During World War II, the United States began to research and develop solid lubricating projects, such as the development of MoS 2 Solid lubricant coating. In the 1950s, the United States formulated the American military standard for molybdenu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/00B29C33/60B29C45/26
Inventor 汪鸿涛李明辉刘芳
Owner BILL ANDA SHANGHAI LUBRICATING MATERIAL
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