Hot-pressed forming technology for three-dimension mobile phone screen lens

A technology of thermoforming and mobile phone screens, which can be applied to other household appliances, optical components, household appliances, etc., can solve the problems of complex design, high production cost, and low product qualification rate, and achieve simplified production and processing time and reduced processing costs , easy to precisely locate the effect

Inactive Publication Date: 2008-01-09
TIANJIN ZHONGHUAN HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of mobile phone technology, mobile phone screens are usually made of flat lenses. Its production process is mainly to print ink on transparent PC, PMMA and other plastic sheets, and then perform C N C (Computer Numerical Control) processing and molding. The substrate is made of PC (chemical name polycarbonate). After the ink is printed on the substrate, it is processed by CNC into the desired shape, and then hot pressed into the final shape. This conventional process is processed by CNC first, because The workpiece has been processed into a single finished product, so the hot pressing process can only be carried out one by one manually, and the hot pressing mold should be designed according to the shape of the single workpiece, which complicates the mold design. In the process of hot pressing molding after CNC machining, the workpiece is affected by the temperature rise and the thermal expansion and contraction effect of plastic products during the production process, so the finished product cannot be accurately positioned in the mold, and the center position of the lens radian is very easy. Following the deviation from the center, resulting in low product qualification rate, high production cost, and no profit for the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Describe the implementation process of the present invention according to specific examples below:

[0012] Thermoforming equipment used: TJ-5 thermal transfer metal hot stamping machine

[0013] The device parameters:

[0014] Rated voltage: AC220V-15~+10%50HZ

[0015] Rated power: 6KW

[0016] Counting range: 0~999999

[0017] Stamping stroke: 105mm

[0018] Hot stamping area: 300×400mm 2

[0019] Stamping temperature range: 0~500

[0020] Stamping pressure range: ≤0.6MPa

[0021] Time adjustment range: 0.01s~9.99s

[0022] Dimensions: 2000*700*500mm

[0023] Take the acrylic sheet as an example. After cutting the printed acrylic sheet into the size suitable for the mold according to the product layout, put the front of the product on the thermoforming machine and heat it. Set the temperature at 120°C for 3 minutes, and then immediately transfer the product to the In the mold, pressurize for 30s, take out the product and store it vertically, transfer it to t...

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PUM

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Abstract

The present invention relates to the hot pressing formation process of 3D cellphone screen lens. The technological process includes the first screen printing of ink onto transparent plastic material with one screen printer, the subsequent cutting of the printed material, molding and cooling, and final CNC machining. The process has no influence of processing temperature on the product quality, easy location of semi-finished product inside the mold, lowered production cost and shortened production period.

Description

technical field [0001] The invention relates to a hot pressing forming process of a mobile phone screen lens, in particular to a hot pressing forming process of a three-dimensional mobile phone screen lens. technical background [0002] At present, in the field of mobile phone technology, mobile phone screens are usually made of flat lenses. Its production process is mainly to print ink on transparent PC, PMMA and other plastic sheets, and then perform C N C (Computer Numerical Control) processing and molding. The substrate is made of PC (chemical name polycarbonate). After the ink is printed on the substrate, it is processed by CNC into the desired shape, and then hot pressed into the final shape. This conventional process is processed by CNC first, because The workpiece has been processed into a single finished product, so the hot pressing process can only be carried out one by one manually, and the hot pressing mold should be designed according to the shape of the single ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D11/00B29C51/46
Inventor 王宪结陈敬胡高峰刘静艳严堂川
Owner TIANJIN ZHONGHUAN HI TECH
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