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Quick forming screw extruding jet device for thermoplastic particle material

A technology of screw extrusion and granulation, which is applied in the field of rapid prototyping extrusion nozzle device, which can solve problems such as the insurmountable delay of nozzle wire discharge and salivation, the increase of the weight of the nozzle and the complexity of coupling control, and the inability to reduce the cost of prototyping, etc. , to achieve the effect of clear local details, good start and stop effect of silk output, and compact structure

Inactive Publication Date: 2005-03-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that this device uses filamentous materials, and the material cost is high; due to the limitation of the friction wheel conveying force and the anti-stabilization ability of the filament from the entrance of the liquefaction chamber to the wheel, the forming speed cannot be increased, and the extrusion volume per hour Only 12~17 grams; nozzle lagging and salivation cannot be overcome, and the forming quality of the prototype is affected
The disadvantage is that this nozzle device still uses filamentous materials, the material cost is high, and the breadth and depth of available materials are limited, so that the cost of prototype production cannot be reduced; at the same time, the power drive device on the nozzle is liquefied by the traditional wire feeding One set of solid wire push nozzle device is increased to two sets now, namely: screw drive motor and friction wheel drive motor
This increases the weight of the nozzle and the complexity of coupling control, and the manufacturing cost of the nozzle is high

Method used

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  • Quick forming screw extruding jet device for thermoplastic particle material
  • Quick forming screw extruding jet device for thermoplastic particle material
  • Quick forming screw extruding jet device for thermoplastic particle material

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Embodiment Construction

[0023] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 , figure 2 , image 3 , Figure 4As shown, the present invention includes a control motor 1, a shaft coupling 2, a connecting plate 3, a connecting barrel 4, an upper barrel 6, a lower barrel 7, an extrusion section temperature sensor 8, a nozzle 9, a metering section temperature sensor 10, Lower heating ring 11, upper heating ring 12, worm wheel 14, worm 15, worm support 16, hopper 17, adapter 18, push rod 19, electromagnet 20, connecting bracket 21, material level detection sensor 22, extrusion screw 23 . Among them, the connecting barrel 4, the hopper 17, the conversion joint 18, the push rod 19, the electromagnet 20, the connecting bracket 21 and the material level detection sensor 22 form the push rod feeding mechanism; the coupling 2, the worm wheel 14, the worm 15 and the worm support Seat 16 forms the...

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Abstract

The quick forming and screw extruding jet device for thermoplastic particle material belongs to the field of fast forming and smelting extrusion stacking technology in mechanical processing. The device includes push rod feeding mechanism, reducing worm gear transmission mechanism, micro extruding screw jet mechanism and temperature controlling heating mechanism. The push rod feeding mechanism consists of electromagnet, push rod and switching joint, and realizes the intermittent feeding of particle material via the reciprocation of the push rod notch between the material bin and material barrel. The present invention is a ideal smelting, extruding, stacking and forming jet device with effectively lowered cost, raised processing speed and less flow casting.

Description

technical field [0001] The invention relates to a rapid prototyping extrusion nozzle device, in particular to a rapid prototyping screw extruder nozzle device for thermoplastic granular materials, which belongs to the rapid prototyping melting extrusion stacking technology in the field of mechanical processing. Background technique [0002] Rapid prototyping technology is a new advanced manufacturing technology developed in the late 1980s, and it has many ways of process realization. In the rapid prototyping system based on melt extrusion accumulation forming, the nozzle is the key component to achieve accumulation forming. It cooperates with the motion system to realize the orderly transfer of materials driven by CAD information, and then builds up and bonds layers to form three-dimensional solid parts. . Therefore, the nozzle is the premise and core of melt extrusion accumulation forming. [0003] Among the current commercial rapid prototyping devices, the rapid prototyp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/30B29C48/53
CPCB29C47/6018B29C48/509B29C48/53B29C48/845
Inventor 王天明习俊通金烨
Owner SHANGHAI JIAO TONG UNIV
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