CN205467226U - Polymer plastic extruder extrude a section of thick bamboo - Google Patents

Abstract

The utility model discloses a polymer plastic extruder extrude a section of thick bamboo, including the barrel, this barrel has the inner chamber, from a left side to the right side, the inner chamber includes: a feeding section of thick bamboo, a shrink section of thick bamboo, the throat, a diffusion section of thick bamboo, go out the feed cylinder, wherein, the internal diameter of this shrink section of thick bamboo reduces from a left side to right linearity, the internal diameter of this diffusion section of thick bamboo increases from a left side to the right side is linear, the internal diameter of this feed cylinder is lighter than the minimum internal diameter of this throat department, and simultaneously, be equipped with the guide recess on the lateral wall of this shrink section of thick bamboo, from a left side to the right side, the guide recess includes the contraction section, the changeover portion, the diffuser, the width of contraction section reduces from a left side to right linearity, the width of diffuser increases from a left side to the right side is linear, and, the degree of depth of guide recess reduces from a left side to the right side in proper order. The utility model has the advantages that: the polymer plastic finished product quality preferred that extrudes.

Description

The extruded tube of high molecule plastic extruder

Technical field

The present invention relates to device of plastic processing technical field, especially relate to a kind of high molecule plastic extruder Extruded tube.

Background technology

When high molecule plastic carries out extruded by extruder, can exhausting problem and extrusion dynamics problem Preferably solved, be directly connected to extrude the height of quality of finished.But, the most conventional extrusion The extruded tube intracavity diameter of machine is the most constant, only suddenly reduces in exit, thus material internal stress becomes Change excessive, cause extrusion finished product internal stress distribution complex, affect the final mass of product.

Summary of the invention

The deficiency existed for above-mentioned prior art, it is an object of the invention to provide a kind of high molecule plastic and squeezes Going out the extruded tube of machine, it has squeezed out high molecule plastic end product quality preferably feature.

To achieve these goals, the technical solution adopted in the present invention is: high molecule plastic extruder Extruded tube, including cylinder, this cylinder has inner chamber, and from left to right, described inner chamber includes: feeding cylinder, Shrink cylinder, venturi, diffusion barrel, discharge barrel, wherein, the internal diameter of this shrink cylinder the most linearly reduces, The internal diameter of this diffusion barrel is the most linearly increasing, the internal diameter of this discharge barrel is interior less than the minimum at this venturi Footpath, meanwhile, the sidewall of this shrink cylinder is provided with guide groove, and from left to right, guide groove includes shrinking Section, changeover portion, diffuser, the width of contraction section the most linearly reduces, the width of diffuser is from a left side To right linearly increasing, and, the degree of depth of guide groove is sequentially reduced from left to right.

Use after said structure, the present invention the most advantageously: the height squeezed out Molecule plastic product better quality.The inner chamber of the extruded tube of the high molecule plastic extruder of the present invention and guiding Groove is designed all in accordance with venturi principle, and the extruding force that raw material is subject to through this recipient continues Change, effectively have adjusted the STRESS VARIATION within extrudate, make the better quality of finished product and the most steady Fixed.

Accompanying drawing explanation

The present invention is further described with embodiment below in conjunction with the accompanying drawings:

Fig. 1 is the front sectional view of embodiments of the invention.

In figure:

10, cylinder, 11, inner chamber, 111, feeding cylinder, 112, shrink cylinder, 113, venturi, 114, expand Dissipate cylinder, 115, discharge barrel, 12, guide groove, 121, contraction section, 122, changeover portion, 123, expand Dissipate section.

Detailed description of the invention

Embodiment, as shown in Figure 1: the extruded tube of high molecule plastic extruder, including cylinder 10, this cylinder Body 10 has inner chamber 11, and this inner chamber about 11 is penetrating.

From left to right, this inner chamber 11 includes: feeding cylinder 111, shrink cylinder 112, venturi 113, diffusion barrel 114, discharge barrel 115.Wherein, the internal diameter of this shrink cylinder 112 the most linearly reduce, this diffusion barrel The internal diameter of 114 is the most linearly increasing, the internal diameter of this discharge barrel 115 is less than the minimum at this venturi 113 Internal diameter.That is, this inner chamber 11 is designed according to venturi principle on the whole.Meanwhile, this shrink cylinder 112 Sidewall be provided with guide groove 12.From left to right, guide groove 12 includes contraction section 121, changeover portion 122, diffuser 123.The width of contraction section 121 the most linearly reduces, the width of diffuser 123 The most linearly increasing.That is, guide groove 12 is also designed according to venturi principle.And, lead The degree of depth drawing groove 12 is sequentially reduced from left to right.So, by appropriate design inner chamber 11, guide groove The shape of 12, and by making guide groove 12 have certain gradient, fabulous have adjusted raw material warp Cross stress distribution during this inner chamber 11, it is ensured that finished product has preferable and relatively stable quality.

The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, Every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion, or directly Or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.

Claims (1)

1. the extruded tube of high molecule plastic extruder, including cylinder (10), in this cylinder (10) has Chamber (11), it is characterised in that: from left to right, described inner chamber (11) including: feeding cylinder (111), receipts Contracting cylinder (112), venturi (113), diffusion barrel (114), discharge barrel (115), wherein, this shrink cylinder (112) Internal diameter the most linearly reduce, the internal diameter of this diffusion barrel (114) is the most linearly increasing, this goes out The internal diameter of barrel (115) is less than the minimum diameter at this venturi (113) place, meanwhile, this shrink cylinder (112) Sidewall be provided with guide groove (12), from left to right, guide groove (12) include contraction section (121), Changeover portion (122), diffuser (123), the width of contraction section (121) the most linearly reduces, expands Dissipate section (123) width the most linearly increasing, and, the degree of depth of guide groove (12) from a left side to The right side is sequentially reduced.