CN212554978U

CN212554978U - Low-viscosity plastic extrusion die head

Info

Publication number: CN212554978U
Application number: CN202021209640.0U
Authority: CN
Inventors: 卢忠应; 吴青柏; 梁广权
Original assignee: Foshan Nanhai Chengxin Plastic Additives Co ltd
Current assignee: Foshan Nanhai Chengxin Plastic Additives Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-19
Anticipated expiration: 2030-06-24

Abstract

A low-viscosity plastic extrusion die head comprises a melt outlet module which is horizontally and fixedly connected with a melt distribution module, wherein the melt distribution module comprises an upper melt distribution module and a lower melt distribution module which are fixedly connected, a melt inlet and a melt distribution pipeline are sequentially arranged between the upper melt distribution module and the lower melt distribution module, the melt inlet is communicated with a screw extruder, and the melt distribution module is provided with a plurality of melt pipelines communicated with the melt distribution pipeline. The utility model discloses guarantee when the low viscous plastic master batch of production, its fuse-element can not glue on fuse-element outlet module, and the pressure fluctuation when its fuse-element is extruded simultaneously is little, and production is stable good, the utility model discloses an aspect has guaranteed through the fuse-element distribution module that sets up clothes hanger shape that the pressure of each fuse-element small pipe department is unanimous, has reduced the pressure fluctuation when extruding, simultaneously through the terminal surface that changes the die head and the contained angle of horizontal plane, even if the fuse-element is extruded back and vertical motion, also can not glue on the die head to the stability of production has been guaranteed.

Description

Low-viscosity plastic extrusion die head

Technical Field

The utility model belongs to plastics master batch production field relates to a low viscosity plastics extrusion die.

Background

At present, the preparation of plastic master batches is generally carried out by a production process of twin-screw extrusion granulation, in the process, various raw materials are mixed and then heated and extruded by twin-screws to form a melt, the melt enters a neck mold after passing through a simple filtering device to form a thin strip, and then the thin strip is extruded, cooled and cut into granules to prepare the plastic master batches. Conventional dies are generally a porous block with end faces generally perpendicular to the horizontal plane.

When using conventional dies to produce lower viscosity plastic masterbatches, the melt often sticks to the die, resulting in unstable or even non-continuous production.

The cause is as follows:

the plastic melt is subjected to the action of gravity after flowing out of the die, but since the viscosity of the low-viscosity plastic melt is too low, it flows directly downward under the action of gravity, and the direction of movement is substantially perpendicular to the horizontal plane, and therefore it sticks to the die, resulting in the failure of the brace and the unstable production. Meanwhile, because the flow conditions at the extrusion strips are different, extrusion pressure fluctuation is easy to occur, and the production stability is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes shortcoming among the prior art provides a low viscosity plastics extrusion die, and its very extrusion production process who is fit for low viscosity plastics master batch can not produce and glue the die head phenomenon, and production stability is good.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the low-viscosity plastic extrusion die head comprises a melt distribution module and a melt outlet module which are horizontally and fixedly connected, wherein the melt distribution module comprises an upper melt distribution module and a lower melt distribution module which are fixedly connected, a melt inlet, a melt distribution pipeline and a plurality of first melt pipelines are sequentially arranged between the upper melt distribution module and the lower melt distribution module, the melt inlet is used for being communicated with a screw extruder, and the melt outlet module is provided with a plurality of second melt pipelines communicated with the melt first pipelines.

Furthermore, the melt distribution pipeline is of an isosceles trapezoid structure, short sides of two parallel sides of the melt distribution pipeline are communicated with the melt inlet, and long sides of two parallel sides of the melt distribution pipeline are communicated with the first melt pipelines.

Further, the first melt pipelines and the second melt pipelines are arranged in parallel.

Further, the included angle between the second melt pipeline and the end face of the melt outlet module with the outlet of the second melt pipeline is 110 degrees.

Further, the included angle between the end face and the horizontal plane is 30 degrees.

Further, the melt distribution module and the melt outlet module are fixedly connected through bolts.

Further, the upper melt distribution module and the lower melt distribution module are fixedly connected through bolts.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses can guarantee when the low viscous plastic master batch of production, its fuse-element can not glue on fuse-element export module, and the pressure fluctuation is little when its fuse-element is extruded simultaneously, and production is stable good, this is because the utility model discloses a pressure that each fuse-element small tube department had been guaranteed to fuse-element distribution module through setting up clothes hanger shape on the one hand is unanimous, has reduced the pressure fluctuation when extruding, simultaneously through the terminal surface that changes the die head and the contained angle of horizontal plane, even if the fuse-element is extruded back and vertical motion, also can not glue on the die head to the stability of production has been guaranteed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention, and do not constitute a limitation on the invention, in which:

FIG. 1 is a schematic structural view of a low viscosity plastic extrusion die of the present invention;

FIG. 2 is a schematic top view of a lower melt distribution module.

In the figure, 1-melt distribution module; 2-melt outlet module;

3-upper melt distribution module; 4-lower melt distribution module;

5-melt inlet; 6-melt distribution channel;

7-first melt channel; 8-a second melt conduit;

9-bolt; 10-screw hole;

11-melt outlet module end face.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1 and 2, the die of the present invention is divided into a melt distribution module 1 and a melt outlet module 2, wherein the melt distribution module 1 is divided into an upper melt distribution module 3 and a lower melt distribution module 4.

One end of the melt distribution module 1 is connected with the screw extruder, and the other end is connected with the melt outlet module 2. In the melt distribution module 1, a melt inlet 5 is connected with a screw extruder, then the melt is distributed to a plurality of first melt pipelines 7 through the melt inlet 5 and the melt distribution pipelines 6, the melt pressure on each first melt pipeline 7 can be ensured to be basically consistent through the isosceles trapezoid melt distribution pipelines 6, the extrusion fluctuation of the melt is reduced, the upper melt distribution module 4 and the lower melt distribution module 4 are fixed through bolts 9, and screw holes 10 are formed in the upper melt distribution module 3 and the lower melt distribution module 4 corresponding to the bolts 8. In the melt outlet module 2, the second melt pipeline 8 is communicated with the first melt pipeline 7, the included angle between the second melt pipeline 8 and the end face 11 of the melt outlet module where the outlet is positioned is 110 degrees, and the included angle between the end face and the horizontal plane is 30 degrees, so that the melt cannot be stuck on a die head even if the melt moves vertically after being extruded. The melt outlet module 2 and the melt distribution module are connected and sealed through bolts 8, and all the components are made of stainless steel materials.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments, but all modifications, equivalents, improvements and the like within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The low-viscosity plastic extrusion die head is characterized by comprising a melt distribution module and a melt outlet module which are horizontally and fixedly connected, wherein the melt distribution module comprises an upper melt distribution module and a lower melt distribution module which are fixedly connected, a melt inlet, a melt distribution pipeline and a plurality of first melt pipelines are sequentially arranged between the upper melt distribution module and the lower melt distribution module, the melt inlet is used for being communicated with a screw extruder, and the melt outlet module is provided with a plurality of second melt pipelines communicated with the melt first pipelines.

2. A low viscosity plastic extrusion die as claimed in claim 1, wherein said melt distribution channel is an isosceles trapezoid having two parallel sides with a short side in communication with said melt inlet and two parallel sides with a long side in communication with said first melt channels.

3. A low viscosity plastic extrusion die as claimed in claim 1, wherein said first and second melt conduits are arranged in parallel.

4. A low viscosity plastic extrusion die as claimed in claim 1, wherein said second melt channel is at an angle of 110 ° to the melt exit block face at which the exit is located.

5. A low viscosity plastic extrusion die as claimed in claim 4, wherein said face is angled at 30 ° to the horizontal.

6. The low viscosity plastic extrusion die of claim 1, wherein the melt distribution module and the melt outlet module are bolted together.

7. A low viscosity plastic extrusion die as claimed in claim 1, wherein said upper and lower melt distribution modules are bolted together.