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Plastic extruder

A plastic extruder and barrel technology, applied in the field of plastic extruders, can solve the problems of wasting manpower, material escaping, insufficient extrusion pressure, etc., and achieve the effect of saving labor

Inactive Publication Date: 2014-07-23
SUZHOU ZHONGSU REPROCESSING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The screw and barrel used in the prior art are uniform in thickness, that is, the diameter of the screw is exactly the same everywhere, and the inner diameter of the barrel is also exactly the same. Similarly, there will be a problem of insufficient extrusion pressure during processing, and the material will rise due to insufficient pressure during feeding, and it needs to be manually pressed down, which is a waste of manpower

Method used

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  • Plastic extruder
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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0021] Reference attached figure 1 to attach figure 2 , the plastic extruder in the present embodiment, it comprises frame 1, barrel 2, hopper 3, screw rod 4, transmission mechanism 5, machine head 6, molding die 7, heating mechanism and cooling mechanism.

[0022] The barrel 2 is fixedly arranged on the frame 1, and the length of the barrel 2 is 15-30 times of its inner diameter. The cartridge 2 has an inner diameter transition portion 8 whose inner diameter gradually decreases along the direction from one end of the cartridge 2 to the other end. The inner cavity of the inner diameter transition part 8 is in the shape of a truncated c...

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Abstract

The invention discloses a plastic extruder. A charging barrel is provided with an internal diameter transition part, and the internal diameter of the internal diameter transition part is gradually reduced from one end part to the other end part of the charging barrel. A screw rod is provided with a rod diameter transition part corresponding to the internal diameter transition part, and the diameter of the rod diameter transition part is gradually reduced from one end part to the other end part of the charging barrel. The rod diameter of the screw rod is changed from large to small, and the internal diameter of the charging barrel is also changed from large to small, so that a material can be extruded gradually tightly when being charged, pressure is increased during extrusion, and furthermore, the molten material is conveniently extruded; the extrusion pressure becomes high, so that the material conveniently enters a hopper to be molten when being charged; moreover, the material does not need to be artificially pressed downwards, so that manpower is greatly reduced.

Description

technical field [0001] The invention relates to a plastic extruder. Background technique [0002] Plastic extruders are used to complete the plasticization and molding of plastics. The extruder heats the raw material to turn the solid raw material into a uniform viscous fluid, and under the action of the extrusion mechanism of the extruder, the molten material is continuously extruded from the machine head at a certain pressure and speed to become the required Plastic parts. The extruding mechanism of the extruder includes a screw, a barrel, a hopper connected to one end of the barrel and used for feeding into the barrel, a head connected to the other end of the barrel, and a molding die installed on the head. The screw and the barrel cooperate to realize the crushing, softening, melting, plasticizing, exhausting and compacting of the plastic, and the rubber material is continuously and evenly conveyed to the head for extrusion. The extruder also includes a transmission m...

Claims

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Application Information

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IPC IPC(8): B29C47/00B29C47/60B29C47/66
CPCB29C48/685B29C48/52
Inventor 王卫康陈海滨
Owner SUZHOU ZHONGSU REPROCESSING MACHINERY
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