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Extruder head

A technology of extruder head and fluid guide, which is applied in the field of extrusion die, can solve the problems such as welding marks in the branch runner of the shunt shuttle, and achieve the effect of dense material

Active Publication Date: 2017-02-15
青岛宏润达橡胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide an extruder head, which fundamentally solves the problem of the weld line of the branch flow channel of the shunt.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0039] As shown in the figure, an extruder head includes a connection guide body 1, a filter sub-body 2, and an outer die sleeve 16. On the fluid 2; the filter sub-fluid 2 includes a ring sleeve body 2.1, a filter part 2.2, the filter part 2.2 includes a central part and a filter hole part, and the filter hole part includes a plurality of filter holes 13; the filter part 2.2 The left and right sides of the center are respectively integrally connected with a balance cone 2.3 and a diversion cone 2.4, and the outer surface of the balance cone 2.3 is smoothly connected successively, including the first diversion cone surface 7 and the first pressure release surface 8; the diversion cone 2.4 The outer surface includes a second taper surface 9 , a second pressure release surface 10 , a compression surface 11 and a molding surface 12 in sequence. The first diversion cone surface 7 and the inner hole connected to the guide body form a first annular compression flow channel 21 whose c...

Embodiment 2

[0045] In order to further ensure the coaxiality between the molding surface 12 and the inner hole of the outer mold sleeve 16, the right end of the ring sleeve body 2.1 also includes a cone 14, and an external thread connection portion 2.12 is provided outside the cone 14. The left end of the outer mold casing 3 includes a tapered hole 17 , and the tapered hole 17 is connected to the threaded connection portion 15 . When the outer mold cover 16 is screwed into the right-end external thread connection part 2.2 of the filter fluid 2, the taper hole 17 is guided with the cone 14, and the screw fit is positioned.

[0046] Other structures are the same as in Embodiment 1.

[0047] The extruder head, through the design of the filter fluid diversion and the cooperation with the outer mold sleeve, successfully solved the problem that the diverter shuttle bracket must have a branch channel, avoided unnecessary melt diversion and confluence, and avoided pipe fitting welding mark probl...

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Abstract

The invention provides an extruder head. The extruder head comprises a connecting flow guide body (1), a filtering flow distribution body (2) and an outer die sleeve (16). The filtering flow distribution body is connected to the connecting flow guide body in a threaded mode, and the outer die sleeve is connected to the filtering flow distribution body in a threaded mode. The filtering flow distribution body (2) comprises a ring sleeve body (2.1); a filtering part (2.2) comprises a central part (2.21) and a filtering hole part (2.22), a balance cone part (2.3) and a flow distribution cone part (2.4) are integrally connected to the two sides of the central part correspondingly, and the filtering hole part comprises a plurality of filtering holes (13); the outer surface of the balance cone part (2.3) comprises a first flow distribution conical surface (7) and a first pressure relief surface (8) which are smoothly connected in sequence; the outer surface of the flow distribution cone part (2.4) comprises second flow distribution conical surfaces (9) which are smoothly connected in sequence; the second flow distribution conical surfaces (9) and an inner hole of the ring sleeve body form a second annular compression passageway with the cross section being decreased gradually; and the taper, in the melt flow direction, of the second annular compression passageway is shown in a formula (please see the specification for the formula), wherein in the formula, r is the radius of the inner hole of the ring sleeve body. According to the extruder head, through the integrated design of the filtering part of the filtering flow distribution body and a rear flow distribution shuttle, the problem of weld marks of branched passageways of the flow distribution shuttle is solved fundamentally.

Description

technical field [0001] The invention relates to the technical field of extrusion dies, in particular to an extrusion head. Background technique [0002] The production of plastic pipes is to extrude high-viscosity molten resin from the die through the die under the push of extrusion pressure to form a tube blank. The prior art widely adopts the design of the shunt shuttle with the center bracket. After the melt passes through the chamfering of the neck of the branch channel uniformly distributed along the shunt shuttle, the cross-sectional area gradually expands. Gradually expand to form several strip-shaped melts, and then each strip-shaped melt is connected together, and then pressed into a tube billet after a large compression ratio at the rear. The pipes produced in this way have the following disadvantages: ①The belt-shaped melt merges and weld lines appear longitudinally along the circumference, which reduces the blasting force of the pipe, and at the same time, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/20B29C47/68B29C47/70B29C47/76B29L23/00B29C48/32B29C48/76
CPCB29C48/30B29C48/32B29C48/694B29C48/705B29C48/763B29L2023/00
Inventor 陈青陈明岸
Owner 青岛宏润达橡胶制品有限公司