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3D printing device for powder material light-curing bonding and printing method

A powder material and 3D printing technology, applied in the field of 3D printing, can solve the problems of fragile molded parts and workpiece deformation, achieve high molding efficiency, fast and efficient printing, and expand the application range

Inactive Publication Date: 2019-05-10
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a 3D printing device and printing method for photocuring and bonding of powder materials. The present invention overcomes the deformation of workpieces and the fragility of molded parts caused by physical and chemical changes in the printing process of traditional stereolithography technology. shortcoming

Method used

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  • 3D printing device for powder material light-curing bonding and printing method
  • 3D printing device for powder material light-curing bonding and printing method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Such as figure 1 As shown, the lifting device is a lifting platform 6, one end of the lifting platform 6 is connected with the side of the base 41, and the other end is connected with a motor, and the motor is controlled by a computer for precise lifting.

example 2

[0042] Such as figure 2 As shown, the lifting device is a piston 6', one end of the piston 6' is connected to the bottom surface of the base 41, and the other end stretches out from the bottom of the photosensitive liquid pool 4 and is connected to a motor, the lifting of the piston is controlled by the motor, and the piston 6' is connected to the photosensitive liquid pool 4 There is a sealing device at the joint to prevent leakage of photosensitive liquid.

[0043] Further, the molding cavity 1 is a shell structure with an upper end open, and at this time, the scanning system 23 is located above the opening of the molding cavity.

[0044] On the other hand, an embodiment of the present invention provides a method for printing a 3D printing device with light-cured and bonded powder materials, the method comprising the following steps:

[0045] Step 1: Place the substrate 42 on the base 41 and fix it properly, and adjust the lifting device so that the substrate 42 is at the ...

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Abstract

The invention discloses a 3D printing device for powder material light-curing bonding and a printing method, and belongs to the field of 3D printing. The device comprises a forming cavity and a lightsource system, wherein a light-sensitive liquid tank is arranged on the bottom of the forming cavity; a powder spray head is arranged inside the forming cavity; a base is arranged in the light-sensitive liquid tank; a base plate is placed on the base; a lifting device is connected on the base; the powder spray head is connected with a powder tank; the position of the powder spray head is controlled through the motor; and the light source system is used for irradiating light to a to-be-formed area. The 3D printing device overcomes the defects that conventional powder sinter moulding cannot manufacture a complex structure part, three-dimensional light-curing forming only can print single light-sensitive material part, and selective laser smelting 3D printing enables materials to be re-crystallized to easily generate inner defects, and the like. The 3D printing device has the advantages of being high in printing speed, high in forming efficiency, and capable of printing a complex model, can add different powder materials according to different purposes, expands the applied range of the powder material, and saves printing raw materials.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a 3D printing device and printing method for photocuring and bonding of powder materials. Background technique [0002] The forming principle of stereolithography technology is that in a liquid tank filled with liquid photosensitive resin, through the control of the computer control system, the light source scans the part that needs to be formed, and the resin will solidify into a thin layer. When a layer is cured, the liquid tank The working table in the machine will drop to a certain height (system control) to continue printing on the next layer, and finally complete the production of the workpiece. However, physical and chemical changes during the molding process of stereolithography may lead to deformation of the workpiece. The soft and thin parts are especially prone to warping and deformation, which affects the precision of the molded part, and the workpiece molded by a single ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/20B29C64/264B29C64/165B22F3/105C04B35/622B33Y30/00B33Y10/00
CPCY02P10/25
Inventor 贺可太李富晖
Owner UNIV OF SCI & TECH BEIJING
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