Polymer microfluidic chip microchannel compression moulding forming device and method thereof
The invention discloses a polymer microfluidic chip microchannel compression moulding forming device and a method thereof, relates to the field of polymer microfluidic chip forming processing, and particularly relates to a polymer microfluidic chip microchannel compression moulding forming processing method and device which are based on laser transmission heating. According to the polymer microfluidic chip microchannel compression moulding forming device and the method thereof, laser energy field is used for heat source, lasers penetrate a polymer microfluidic chip matrix, a absorbing coating absorbs the lasers, the absorbing coating heats up rapidly after absorbing the laser energy, the absorbing coating with higher temperature heats and melts the surface of the microfluidic chip matrix, a forming template with microstructural embossment is used for extruding the surface of the microfluidic chip matirx, and the polymer microfluidic chip microchannel compression moulding replication forming processing is achieved. The polymer microfluidic chip microchannel compression moulding forming device and the method thereof have the advantages that the operation is simple, the accuracy of replication is good, the efficiency is high and the cost is low. Batch forming processing for polymer microfluidic chips is applicable. 1. A polymer microfluidic chip micro-channel moulding device, characterized in that includes a laser output system, the automatic control system and extrusion die, laser output system comprises a laser and a light path shaping mechanism, extrusion die comprises an upper die, the lower die, die carrier, the upper die comprises a fixed template, transmissity Restriant layer, light on the template is the constraining layer, the plate is fixed on the die carrier, the light shaping mechanism constraining layer right below the light path, the lower die includes the activities of the molding template is connected to the die, is placed on the plastic member, the plastic of the constraining layer is light, the lower surface of the plastic member is provided with a absorbing coating, the polymer is provided with a on the upper surface of the micro-fluidic chip micro-channel micro-structure corresponding to the protruding, automatic control system and laser and extrusion die control connection. 2. Polymer micro-fluidic chip micro-channel moulding device according to Claim 1, characterized in that laser as the optical fiber laser or Nd-YAG solid laser, laser output laser wavelength is 800-1064nm, power is 1-50 W, the laser beam of the laser path shaping mechanism of the polymer micro-fluidic chip shaping the micro-channel structure region of uniform shape. 3. Polymer micro-fluidic chip micro-channel moulding device according to Claim 2, characterized in that transparent Restriant layer is made of translucent glass. 4. Polymer micro-fluidic chip micro-channel moulding device according to Claim 3, characterized in that absorbent coating is a carbon black. 5. Polymer micro-fluidic chip micro-channel moulding device according to Claim 4, characterized in that the shaping template is die steel. 6. Polymer micro-fluidic chip micro-channel moulding device according to Claim 5, characterized in that the inner wall of the die is provided with a guide rail, the guide rail movably connected with the molding template. 7. Implement to 6 any one of the polymer micro-fluidic chip micro-channel method for molding according to Claim 1, characterized in that polymer microfluidic chip micro-channel processing method for press molding of the specific implementation of the steps are as follows: A. Preparation of plastic matrix material; B. The laser is opened, according to the plastic polymer of the matrix material and the size of the micro-channel of a micro-fluidic chip, determining laser parameters of the laser and forming process, path shaping mechanism, and control program for setting the work order; C. Start the automatic control system, the upper die of the extrusion die, to be separated from the lower die, shaping template down, is placed in the plastic with a microstructured raised feature on the surface of the shaping template, and positioning and fixing; D. Automatic control system control shaping template distalward, extrusion die closed, to the plastic light transmission Restriant layer; E. Laser projection heating: laser starts to work, the output laser, through the light path of the laser output from the laser shaping mechanism shaping, and shaping the polymer micro-fluidic chip micro-channel energy equivalent to the appearance of the structure area of the laser beam evenly distributed, laser vertical through the transmission the restraint layer, transmissive plastic member and the lower surface of the heating radiation absorbing coating of plastic, the positioning of the exposure time 1-5 s, absorbing coating for absorbing laser energy to heating and melting the lower surface of the plastic member, the lower surface of the plastic member by solid-state transformation is high or viscous state can invention; F. Extrusion molding: after being melted on the lower surface of the plastic member, automatic control system to control the upward extrusion plastic molding template, extrusion molding plastic member micro-channel; G. Pedestal: plastic micro-channel molding surface after cooling and solidifying, the automatic control system controls the shaping template to move downwards, remove the plastic member, complete a working cycle. 8. Implementation of the polymer micro-fluidic chip micro-channel method for molding according to Claim 7, characterized in that the matrix material includes preparing plastic matrix of the plastic member and the forming and processing the lower surface of the plastic member is coated with absorption coating, plastic matrix forming process through injection molding, extrusion molding, compression molding die completed, the micro-structure of the upper surface of the molding template polymer with the structure of the micro-fluidic chip micro-channel corresponding to the size and shape, the micro-structure of the upper surface of the molding template is photoetching or micro-cutting or by electric spark processing method of a precision manufacturing. 9. Implementation of the polymer micro-fluidic chip micro-channel method for molding according to Claim 7, characterized in that laser irradiation by using the single continuous positioning. 10. Implementation of the polymer micro-fluidic chip micro-channel method for molding according to Claim 7, characterized in that positioning the gap through a plurality of times of laser irradiation.