CN113601815B

CN113601815B - Hollow latticed pipe extruding machine head structure with mixer support

Info

Publication number: CN113601815B
Application number: CN202110790416.8A
Authority: CN
Inventors: 盛明荣; 孙丽华; 吴江东; 殷铄涵; 张友新
Original assignee: Jiangsu Nuobeier Plastic Industry Co ltd
Current assignee: Jiangsu Nobel Plastics Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-12-23
Anticipated expiration: 2041-07-13
Also published as: CN113601815A

Abstract

The invention discloses a hollow latticed extrusion pipe machine head structure with a mixer support, which comprises a machine head connector, a machine head body and a mouth mold which are sequentially connected, and further comprises a hollow spreader cone, the mixer support, a hollow core rod, a core rod and a replacement core rod which are sequentially connected; a horn-shaped feed inlet is formed in the machine head connector, a conical cavity is formed in the machine head body, and a material channel is formed in the neck mold; the hollow spreader cone main body is arranged in the horn-shaped feed inlet, the hollow core rod is arranged in the conical cavity, and the core rod and the replacement core rod are arranged in the material channel; be provided with welding through-hole and mesh runner on the blender support, the welding through-hole is located mesh runner outer lane, the welding has the spiral strip in every welding through-hole, the spiral strip is whole to be fretwork formula latticed structure and wraps up outside the cavity plug. The invention can avoid the generation of welding marks and improve the comprehensive performance of the extruded pipe.

Description

Hollow latticed pipe extruding machine head structure with mixer support

Technical Field

The invention belongs to the technical field of pipe extruding machine heads, and particularly relates to a hollow latticed pipe extruding machine head structure with a mixer support.

Background

The existing pipe extruding machine head is a straight-through machine head, and comprises a machine head connector, a spreader cone, a core rod, a mouth mold, a press ring sleeve and a splitter support. However, the shunt bracket in the machine head structure is provided with a plurality of shunt ribs, materials are forcedly cut and shunted when passing through the shunt ribs, and the materials cannot be fused, so that the extruded finished pipes have weld marks. The weld marks are the weakest part of the whole pipe with strength and physical and mechanical properties, and not only affect the surface quality of the plastic pipe, but also affect the comprehensive physical properties of the pipe. Meanwhile, due to the structural design defects of the machine head, materials in the machine head pass through the shunting ribs and then enter the gradually contracted cavity runner, so that the materials which are not plasticized cannot be effectively sheared and mixed, and are directly extruded and molded from the neck mold after being plasticized, and the pipe is rough in surface and low in strength. Meanwhile, the spreader cone and the core rod arranged in the machine head are both solid structures, the whole machine head is heavy, the disassembly and the assembly are labor-consuming and time-consuming, and the heating and cooling time is long.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a hollow grid-shaped extrusion pipe machine head structure with a mixer support, so that the defects in the prior art are overcome.

In order to achieve the purpose, the invention provides a hollow latticed extrusion pipe machine head structure with a mixer support, which comprises a machine head connector, a machine head body and a mouth mold which are sequentially connected, and further comprises a hollow spreader cone, a mixer support, a hollow core rod, a core rod and a replacement core rod which are sequentially connected, wherein the mixer support is also connected with one end of the machine head connector and clamped in the machine head body; a horn-shaped feeding hole is formed in the machine head connector, a conical cavity is formed in the machine head body, and a material channel is formed in the neck mold; the main body part of the hollow spreader cone is arranged in the horn-shaped feed port, the hollow core rod is arranged in the conical cavity, the core rod and the replacement core rod are arranged in the material channel, a feed flow channel is reserved between the outer wall of the hollow spreader cone and the inner wall of the horn-shaped feed port, a mixing flow channel is reserved between the outer wall of the hollow core rod and the inner wall of the machine head body, and a discharge flow channel is reserved between the outer wall of the core rod, the outer wall of the replacement core rod and the inner wall of the neck mold; be provided with welding through-hole and mesh runner on the blender support, the welding through-hole is located mesh runner outer lane, the welding has the spiral strip in every welding through-hole, the spiral strip is whole to be fretwork formula latticed structure and wraps up outside the cavity plug, mesh runner intercommunication feeding runner and compounding runner.

The hollow spreader cone comprises a cone body, a withdrawing table and a connecting external thread which are sequentially arranged, the mixer support is nested on the withdrawing table, and one end of the hollow core rod is nested on the connecting external thread.

The machine head structure is characterized in that an inner hole round table is further arranged at one end of the machine head body, a boss is arranged at one end of the neck mold, the boss of the neck mold is clamped in the inner hole round table, a pressure ring sleeve is further sleeved outside the neck mold, and the pressure ring sleeve is fixed with the machine head body.

One side of the mixer support, which is positioned on the feeding runner, is also provided with a conical hole, and the conical hole is communicated with the mesh runner.

The mesh flow channels are provided with a plurality of circles, the mesh flow channels in each circle are distributed in a staggered mode, and the diameter of each mesh flow channel is 5-8mm.

The spiral strip is a twisted rhombus spiral strip with a multi-curved surface form.

Compared with the prior art, one aspect of the invention has the following beneficial effects:

(1) According to the invention, the spiral strips are welded in the welding through holes of the mixer bracket and are wrapped outside the hollow core rod in a hollow grid structure, so that materials can be mixed and sheared from different directions in the mixing flow channel, the materials are plasticized and mixed more uniformly, the occurrence of welding marks on extruded pipes can be avoided, the rejection rate of the extruded pipes can be reduced, and the strength of the pipes can be improved;

(2) The design of the mesh flow channel can play a role in preliminary mixing of materials, and meanwhile, the conical holes are matched with the mesh flow channel, so that the materials can flow more smoothly, and the problem of uneven mixing of the materials due to dead angles generated when the materials pass through the mesh flow channel in the extrusion process is solved;

the design of the hollow spreader cone and the hollow core rod can reduce the overall weight of the machine head, save the material cost, improve the heating and cooling time and save the heating energy.

Drawings

FIG. 1 is a schematic view of a hollow grid type extrusion tube machine head structure with a mixer support according to the present invention;

FIG. 2 is an enlarged schematic view of a hollow skimmer cone of the invention;

FIG. 3 is an enlarged schematic view of the mixer holder of the present invention;

FIG. 4 is a top view of the mixer holder of the present invention;

FIG. 5 is an enlarged schematic view of the mixer holder of the present invention after welding the helical bars;

FIG. 6 is a top view of the mixer holder of the present invention after welding the helical bars;

FIG. 7 is a schematic view of a helical strip of the present invention;

FIG. 8 is a schematic cross-sectional view of a hollow mandrel of the present invention;

the reference signs are: 1-a machine head connector, 11-a trumpet-shaped feed inlet, 12-a feed flow channel, 2-a machine head body, 21-a conical cavity, 22-a mixing flow channel, 23-an inner hole circular truncated cone, 3-a neck mold, 31-a material channel, 32-a discharge flow channel, 33-a boss, 4-a hollow diversion cone, 41-a cone, 42-a retreat table, 43-a connecting external thread, 5-a mixer support, 51-a welding through hole, 52-a mesh flow channel, 53-a conical hole, 6-a hollow core rod, 7-a core rod, 8-a replacing core rod, 9-a spiral strip and 10-a press ring sleeve.

Detailed Description

The following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations such as "comprises" or "comprising", etc., will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1-8, a hollow grid-shaped extrusion tube head structure with a mixer support comprises a head connector 1, a head body 2 and a mouth mold 3 which are connected in sequence, and further comprises a hollow spreader cone 4, a mixer support 5, a hollow core rod 6, a core rod 7 and a replacement core rod 8 which are connected in sequence, wherein the mixer support 5 is further connected with one end of the head connector 1 and clamped in the head body 2; a horn-shaped feed inlet 11 is formed in the machine head connector 1, a conical cavity 21 is formed in the machine head body 2, and a material channel 31 is formed in the neck mold 3; the main body part of the hollow spreader cone 4 is arranged in the trumpet-shaped feed port 11, the hollow core rod 6 is arranged in the cone-shaped cavity 21, the core rod 7 and the replacement core rod 8 are arranged in the material channel 31, a feed flow channel 12 is reserved between the outer wall of the hollow spreader cone 4 and the inner wall of the trumpet-shaped feed port 11, a material mixing flow channel 22 is reserved between the outer wall of the hollow core rod 6 and the inner wall of the machine head body 2, and a discharge flow channel 32 is reserved between the outer wall of the core rod 7, the outer wall of the replacement core rod 8 and the inner wall of the mouth mold 3; be provided with welding through-hole 51 and mesh runner 52 on blender support 5, welding through-hole 51 is located mesh runner 52 outer lane, the welding has spiral strip 9 in every welding through-hole 51, spiral strip 9 is whole to be fretwork formula latticed structure and wraps up outside cavity plug 6, mesh runner 52 intercommunication feed runner 12 and compounding runner 22.

Further, in order to facilitate the connection between the hollow spreader cone 4 and the mixer support 5 and the hollow mandrel 6, the hollow spreader cone 4 comprises a cone 41, a withdrawing table 42 and a connecting external thread 43 which are sequentially arranged, the mixer support 5 is nested on the withdrawing table 42, and one end of the hollow mandrel 6 is nested on the connecting external thread 43.

Further, in order to facilitate connection between the machine head body 2 and the mouth mold 3, an inner hole circular truncated cone 23 is further arranged at one end of the machine head body 2, a boss 33 is arranged at one end of the mouth mold 3, the boss 33 of the mouth mold 3 is clamped in the inner hole circular truncated cone 23, a pressure ring sleeve 10 is further sleeved outside the mouth mold 3, and the pressure ring sleeve 10 is fixed with the machine head body 2.

Further, in order to improve the smoothness of the material flowing, a tapered hole 53 is further formed in one side of the mixer support 5, which is located on the feeding runner 12, and the tapered hole 53 is communicated with the mesh runner 52.

Further, in order to improve the uniformity of material mixing, the mesh flow channels 52 are provided with a plurality of circles, the mesh flow channels 52 are distributed in a staggered mode in each circle, and the diameter of each mesh flow channel 52 is 5-8mm.

Further, in order to improve the shearing and mixing uniformity of the materials, the spiral strip 9 is a twisted rhombus spiral strip with a multi-curved-surface form.

During implementation, materials enter from the horn-shaped feed port 11 and are then shunted to the material flow channel 12 through the hollow shunt cone 4, then flow into the material mixing flow channel 22 through the tapered holes 53 and the mesh flow channel 52, and the materials in the material mixing flow channel 22 are sheared and mixed from different angles through the spiral strips 9 which are integrally in the hollow grid structure, and then are extruded out of the pipe through the discharge flow channel 32. Wherein the replacement mandrel 8 can be replaced according to different inner diameters of the required extruded pipe.

Compared with the traditional extruder head structure, the invention does not need to design a diversion rib any more, the materials can be mixed for the first time when passing through the mesh flow channel, and the materials are fully sheared from different angles by the spiral strips 9 in the mixing flow channel 22 before extrusion to obtain secondary mixing, thereby avoiding the generation of welding marks and improving the comprehensive performance of the extruded pipe.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a take latticed tubular product aircraft nose structure of extruding of fretwork formula of blender support, includes aircraft nose connector, aircraft nose body and the bush that connects gradually, its characterized in that: the mixer comprises a hollow spreader cone, a mixer bracket, a hollow core rod, a core rod and a replacement core rod which are sequentially connected, wherein the mixer bracket is also connected with one end of a machine head connecting body and clamped in the machine head body; a horn-shaped feed inlet is formed in the machine head connector, a conical cavity is formed in the machine head body, and a material channel is formed in the neck mold; the main body part of the hollow spreader cone is arranged in the horn-shaped feed port, the hollow core rod is arranged in the conical cavity, the core rod and the replacement core rod are arranged in the material channel, a feed flow channel is reserved between the outer wall of the hollow spreader cone and the inner wall of the horn-shaped feed port, a material mixing flow channel is reserved between the outer wall of the hollow core rod and the inner wall of the machine head body, and a discharge flow channel is reserved between the outer wall of the core rod, the outer wall of the replacement core rod and the inner wall of the mouth mold; the mixer support is provided with welding through holes and mesh flow channels, the welding through holes are located on the outer ring of the mesh flow channels, spiral strips are welded in each welding through hole, the spiral strips are integrally in a hollow grid structure and wrapped outside the hollow core rod, and the mesh flow channels are communicated with the feeding flow channels and the mixing flow channels; the hollow spreader cone comprises a cone body, a withdrawing table and a connecting external thread which are sequentially arranged, the mixer support is nested on the withdrawing table, and one end of the hollow core rod is nested on the connecting external thread; the mesh flow channels are provided with a plurality of circles, the mesh flow channels in each circle are distributed in a staggered mode, and the diameter of each mesh flow channel is 5-8mm.

2. The hollow grid-shaped extrusion pipe machine head structure with the mixer support as claimed in claim 1, is characterized in that: the machine head structure is characterized in that an inner hole round table is further arranged at one end of the machine head body, a boss is arranged at one end of the neck mold, the boss of the neck mold is clamped in the inner hole round table, a pressure ring sleeve is further sleeved outside the neck mold, and the pressure ring sleeve is fixed with the machine head body.

3. The hollow grid-shaped extrusion pipe machine head structure with the mixer support as claimed in claim 1, is characterized in that: one side of the mixer support, which is positioned on the feeding runner, is also provided with a conical hole, and the conical hole is communicated with the mesh runner.

4. The hollow grid-shaped extrusion pipe machine head structure with the mixer support as claimed in claim 1, is characterized in that: the spiral strip is a twisted rhombus spiral strip with a multi-curved surface form.