Variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions

A technology of additive manufacturing and equipment, which is applied in the field of screw extrusion variable precision additive manufacturing equipment, can solve the problems of unsuccessful material transportation, unevenness, blockage, etc., to promote material transportation, improve stability and stability, prevent The effect of material blocking

Pending Publication Date: 2019-08-16
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, FDM generally uses wire materials, and certain restrictive processing is required for raw materials.
The extrusion discharge method still

Method used

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  • Variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions
  • Variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions
  • Variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 The additive manufacturing equipment shown includes: a three-dimensional mobile platform 1, two extrusion units 2, a frame 3, a printing platform 4, a three-dimensional mobile platform 1 is fixed on the frame 3, and the extrusion unit 2 is fixed on a three-dimensional mobile On the platform 1 , the printing platform 4 is placed under the extrusion unit 2 , and the printing platform 4 is fixed above the frame 3 . The three-dimensional mobile platform adopts the known screw guide rail structure, which is composed of four sets of second motors, couplings, screw rods, guide rails and loading racks. The second motor is connected to the screw rod through the coupling, and the screw rod is connected to the load The rack is connected, and the stage is connected with the guide rail. Driven by the second motor, the three-dimensional movement of the carrier can be realized. The movement space of the three-dimensional mobile platform 1 is 300×400×200 mm, and the s...

Embodiment 2

[0047] The difference from Example 1 is that the heating device is replaced by an ultrasonic vibration device, and no temperature measuring hole is provided. There is an ultrasonic vibration device outside the barrel, which can promote the transportation of high-viscosity materials based on the anti-friction effect of ultrasound. The equipment provided in this embodiment is suitable for conveying high-viscosity materials.

Embodiment 3

[0049] The difference from Example 1 is that a second opening is provided on the cover of the storage bin, through which the second opening is connected with the external storage bin to ensure that the material in the storage bin is sufficient to realize continuous feeding.

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PUM

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Abstract

The invention discloses variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions. The equipment comprises a three-dimensional movable platform andextrusion units arranged on the three-dimensional movable platform. Each extrusion unit comprises a first motor, a gearbox, a storage bin, a stirring part, a screw, a plunger, a cylinder and a discharging nozzle, wherein the first motor is connected with the gearbox; the bottom of the gearbox is connected with one end of the storage bin; the stirring part is arranged in the storage bin; the screwcomprises a fixing part and a threaded part and penetrates through the storage bin and the cylinder, one end of the screw is connected with the stirring part through the fixing part, the other end ofthe screw is connected with the plunger through the threaded part, an output shaft of the gearbox is connected with the fixing part, the bottom of the storage bin is connected with one end of the cylinder, and the bottom of the cylinder is connected with the discharging nozzle. With the adoption of the equipment, the problems of low efficiency, high material cost and the like in traditional additive manufacturing are solved, and various materials such as engineering plastics, building materials, high-viscosity energetic materials, metal slurry, and ceramic slurry can be formed.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a screw extrusion variable precision additive manufacturing equipment with stirring and anti-blocking functions. Background technique [0002] In recent years, additive manufacturing technology has highlighted the blowout development, and various forms of 3D printing equipment have been launched one after another. However, reducing cost and improving precision are still a major limitation to the widespread application of additive manufacturing. Selected metal laser sintering (SLM), electron beam melting forming (EBM) or near-net forming (NNSF) have high index requirements for raw materials, and the cost remains high. At the same time, there is an essential contradiction between forming efficiency and forming accuracy. The additive manufacturing of engineering plastics, building materials, energetic materials, metal pastes, ceramic pastes and other materials is o...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/112B29C64/20B29C64/314B29C64/321B22F3/115B28B1/00B33Y30/00B33Y40/00
CPCB22F3/002B22F3/115B28B1/001B29C64/112B29C64/118B29C64/20B29C64/314B29C64/321B33Y30/00B33Y40/00
Inventor 林文雄林紫雄邓晶黄见洪阮开明张政陈金明张国校
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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