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Method and device for forming plastic part microstructure based on laser heating

A microstructure forming and laser heating technology, applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as difficulty in meeting the forming and processing requirements of plastic microstructure parts, and no strict temperature requirements, and achieve laser energy utilization efficiency. High, flexible processing, simple and practical system structure

Inactive Publication Date: 2013-03-13
JIANGSU UNIV
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Problems solved by technology

Chinese patent CN201070823Y discloses a micro-plastic forming device based on laser processing. The pressure generated by laser shock and the heat generated by laser irradiation of plastic are used to obtain the forming of micro-plastics. The patent does not have strict requirements on the temperature of laser processing. The plastics in the patent are miniature parts with a scale of micron, which belongs to micro-volume molding. This patent is not applicable to the micro-structure molding on the surface of macroscopic plastic parts.
[0007] To sum up, the existing processing methods are difficult to meet the growing requirements of plastic microstructure forming processing. Therefore, it is necessary to explore new processing methods and new technologies to achieve fast, efficient, energy-saving, environmentally friendly and low-cost plastic microstructure forming processing.

Method used

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  • Method and device for forming plastic part microstructure based on laser heating
  • Method and device for forming plastic part microstructure based on laser heating
  • Method and device for forming plastic part microstructure based on laser heating

Examples

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example 1

[0039] Example 1: Laser Heating Extrusion Forming of Microfluidic Chips

[0040] The microfluidic chip is a PMMA matrix sheet, and there are microchannels on the surface of the PMMA matrix, such as figure 2 As shown, the size of the substrate: 10×10×1mm, the microchannel is semicircular, the diameter is 0.1mm, and the distance between the microchannels is 0.5mm. Firstly, the ordinary injection mold is used to form the PMMA matrix sheet, and then the matrix is ​​subjected to laser-heated plastic microstructure forming processing, that is, the microstructure forming process is completed by a laser heating extrusion forming device. Start the control system of the laser heating extrusion forming device, and set work instructions and procedures. Turn on the laser, adjust the optical system; determine the main parameters of the laser: power 10W, positioning irradiation time 0.05s. The base of the upper and lower parts of the microstructure extrusion molding system is separated, a...

example 2

[0041] Example 2: Laser Heating Extrusion Forming of Cell Culture Dish

[0042] The cell culture dish is made of PS material, and the surface of the cell culture dish has microstructures such as image 3 As shown, the size of the matrix is ​​1.2×1.2×0.5mm, the size of the square microholes is 0.2×0.2×0.3mm, and a total of 9 square microholes are arranged in an array. Firstly, the matrix of the cell culture dish is obtained by injection molding, and then the plastic microstructure forming process is carried out by laser heating. Start the control system of the laser heating extrusion forming device, set the work order and program, turn on the laser, adjust the optical path system; determine the main parameters of the laser: power 2W, spot diameter 5mm, and irradiation time for each positioning 0.1s. The base of the upper and lower parts of the microstructure extrusion molding system is separated, and the unloader takes the base of the cell culture dish and places it on the pos...

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Abstract

The invention discloses a method and a device for forming a plastic part microstructure based on laser heating, and relates to the field of formation of the plastic part microstructure, in particular to the method and the device for forming the plastic part microstructure based on laser heating. The surface of a base body of a plastic part with microstructure characteristics is quickly heated and molten by utilizing the heat effect of laser on a polymer and accurately controlling laser power and irradiation time as well as irradiation mode, and the plastic part microstructure is formed and processed through a laser heating extrusion forming device. The method and the device have the advantages of high forming precision, large scale range, good flexibility, high efficiency and low cost, are suitable for large-batch automatic forming and processing of the plastic part microstructure, and have higher application values.

Description

technical field [0001] The invention relates to the field of laser processing and plastic micro-forming, in particular to a method and device for forming microstructures of plastic parts based on laser heating. Forming, especially suitable for thermoplastic parts with micro-structural features such as micro-holes, micro-grooves, and micro-protrusions on the surface, such as micro-fluidic chips, micro-precision patterns and other precision plastic parts. Background technique [0002] Plastic microstructures refer to thermoplastic products with micro-scale micropores, microgrooves, and microprotrusions on the surface, such as microfluidic chips, micro precision patterns, etc. Due to the excellent mechanical properties of plastic microstructures And physical and chemical properties, plastic products with microstructure are widely used in aerospace, microelectronics, precision instruments, biomedical and national defense and other fields. Plastic microstructure processing has be...

Claims

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Application Information

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IPC IPC(8): B23K26/00B29C67/00B23K26/354
Inventor 谭文胜周建忠黄舒杨晶陈寒松陈松玲孟宪凯
Owner JIANGSU UNIV
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