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Exhaust device of plastic thin film extruder

A technology of plastic film and exhaust device, which is applied in the field of machinery, can solve problems such as difficulty in device assembly, and achieve the effects of improving assembly convenience, stability, and convenience

Active Publication Date: 2016-10-12
ZHEJIANG SHANGCHENG SCI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is a problem with the above-mentioned device: the pumping chamber is directly connected to the inner cavity of the extrusion cylinder through the through hole, and there is no auxiliary structure in between, which makes the assembly of the whole device difficult

Method used

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  • Exhaust device of plastic thin film extruder
  • Exhaust device of plastic thin film extruder
  • Exhaust device of plastic thin film extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 8 As shown, the plastic film extrusion device consists of a frame 1, an extrusion cylinder 2, a feeding cylinder 3, a feeding screw 4, an electric heater 5, a heat insulation cylinder 6, a magnetic block 7, a protective cover 8, a water storage tank 9, a pump Air pump 10, exhaust pipe 11, dustproof net 12, pressure cap 13 etc. are formed. Wherein, the heat insulation cylinder 6 and the protective cover 8 are all made of thermal insulation materials, such as thermal insulation rock wool, molded polystyrene board, extruded polystyrene board, etc.; the feeding cylinder 3 and the water storage tank 9 are made of magnetic Material, the magnetic material can be iron or iron alloy.

[0032] Specifically, as figure 1 and Figure 5 As shown, the frame 1 is I-shaped, and the frame 1 includes two connecting plates 1a arranged vertically and a supporting plate 1b between the two connecting plates 1a. Wherein, the two ends of the support plate 1b are ...

Embodiment 2

[0048] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the locking mechanism includes the second threaded hole penetrating through the side wall of the positioning part 2d, the third threaded hole provided on the side wall of the sliding part 11b and There are several bolts 2 and 3 threaded in the threaded hole 2 and they are distributed along the axial direction of the sliding part 11 b . The end of the bolt 2 is threaded in one of the threaded holes 3 .

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Abstract

The invention provides an exhaust device of a plastic thin film extruder, belongs to the technical field of machinery and solves the problem of inconvenience in assembling of an existing forming machine. In the exhaust device of the plastic thin film extruder, the plastic thin film extruder comprises a rack and an extrusion cylinder which is transversely arranged on the rack; the exhaust device comprises an exhaust pipe arranged above the extrusion cylinder; the left end of the exhaust pipe is sealed, and the right end is opened; the rack is fixedly provided with an exhaust pump; a right end opening of the exhaust pipe is communicated with an air inlet of the exhaust pump; a tubular sliding part is arranged on the outer side wall of the left end of the exhaust pipe; a tubular locating part is arranged on the outer side wall of the extrusion cylinder; the lower end of the sliding part is inserted in the locating part; a locking mechanism which can be used for limiting the sliding of the sliding part is arranged between the sliding part and the locating part; a tubular air inlet part is arranged on the side wall of the middle part of the exhaust pipe; a tubular exhaust part is arranged on the side wall of the middle part of the extrusion cylinder; the upper end of the exhaust part is inserted in the air inlet part; sealing between the exhaust part and the air inlet part is formed through a sealing ring. The exhaust device provided by the invention has the advantage of convenience in assembling.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a plastic film extruder, in particular to an exhaust device of the plastic film extruder. Background technique [0002] Plastic film is the raw material for making woven bags. The production process is as follows: dry the mixed raw materials and put them into the hopper of the extruder. With the rotation of the feeding screw, the raw materials are forced to the die head. Small, the raw material is continuously compacted during the forward process, the gas is discharged, and at the same time it is squeezed, sheared, the temperature is raised, and the heat source of the heater is absorbed, so that the temperature of the raw material is gradually increased and undergoes a three-state transition, that is, it is gradually transformed from the glass The state becomes a highly elastic state, and finally becomes a viscous flow state, reaching complete plasticization, and extruding the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/76B29C48/76
CPCB29C48/763B29C48/767
Inventor 张伟忠苏跃锋施叶标汪琴伟
Owner ZHEJIANG SHANGCHENG SCI&TECH
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