CN219543980U

CN219543980U - Special high-efficient extrusion screw rod of PP panel for extruder

Info

Publication number: CN219543980U
Application number: CN202320666115.9U
Authority: CN
Inventors: 杨军兵; 李挺
Original assignee: Zhejiang Zhongyang Screw Manufacturing Co ltd
Current assignee: Zhejiang Zhongyang Screw Manufacturing Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-08-18
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses a special efficient extrusion screw for a PP plate for an extruder, which comprises a screw main body, wherein the screw main body is divided into a feeding section, an extrusion section and a homogenizing section; according to the utility model, as the screw pitch of the stirring section is larger and the screw surface is provided with a plurality of stirring rods, raw materials are uniformly mixed, the screw pitch of the second melting section is gradually reduced and the screw groove is gradually shallower, so that the pressure of the PP master batch is increased, the internal friction is increased, the screw groove is gradually shallower, the master batch can be fully heated by the heat of the inner wall, the melted liquid plastic can be stirred by the first stirring block, the master batch which is not melted in the inner part is fused, the bubbles are separated out by stirring the liquid plastic by the second stirring block, more liquid plastic can be stored due to the large screw pitch and the deep screw groove of the deep section, and the bubbles in the liquid plastic in the shallow section are separated out due to the small screw pitch and the shallow groove of the shallow section, and the bubbles in the liquid plastic are reduced by repeated operation, so that the extrusion quality is improved.

Description

Special high-efficient extrusion screw rod of PP panel for extruder

Technical Field

The utility model relates to the technical field of extrusion rods, in particular to a special efficient extrusion screw for a PP plate for an extruder.

Background

The compression area of traditional extrusion pole can exist and be heated inhomogeneous, can appear unmelted masterbatch, and homogenization effect is not good at the homogenization end, can exist little bubble in liquid plastics, and these can influence the quality of extruding plastics, and we propose a special high-efficient extrusion screw of PP panel for the extruder for this purpose and are used for solving above-mentioned problem.

Disclosure of Invention

The utility model aims to provide a special efficient extrusion screw for a PP plate for an extruder, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the special efficient extrusion screw for the PP plate for the extruder comprises a screw main body, wherein the screw main body is divided into a feeding section, an extrusion section and a homogenizing section;

the feeding section comprises a master batch entering section and a stirring section, and the threaded surface of the stirring section is fixedly connected with a plurality of stirring rods;

the extrusion section comprises a first melting section and a second melting section, the pitch of the second melting section is gradually reduced, and the first melting section is spirally distributed on the screw body through a plurality of first stirring blocks and the like;

the homogenizing section comprises a plurality of deep sections and a plurality of shallow sections, and a plurality of second stirring blocks are arranged in the deep sections.

Preferably, the extrusion section is arranged at the plastic extrusion end of the feeding section, and the homogenizing section is arranged at the plastic extrusion end of the extrusion section.

Preferably, the first melting section is arranged at the minimum pitch end of the second melting section, and the pitch of the first melting section is equal to the minimum pitch of the second melting section.

Preferably, the groove of the second melting section is changed from deep to shallow, and the groove of the first melting section is equal to the groove of the second melting section, which is the shallowest.

Preferably, the shallow sections are arranged between the two deep sections.

Preferably, the pitch of the shallow sections is smaller than the pitch of the deep sections.

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

because the pitch of stirring section is great and the helicoid is equipped with a plurality of stirring rod, make the raw materials misce bene like this, the pitch of second section of melting reduces gradually and the helicoid becomes shallow gradually, increase the pressure to the PP masterbatch like this, the internal friction of masterbatch has been increased, and the helicoid becomes shallow gradually, the heat of inner wall can be abundant like this heats the masterbatch, first stirring piece can stir the liquid plastics that melts, make inside unmelted masterbatch can fuse, because the interval has set up deep section and shallow section, the second stirring piece stirs liquid plastics, make the bubble separate out, because the pitch of deep section is big and the helicoid is dark, can deposit more liquid plastics, because the pitch of shallow section diminishes and the helicoid becomes shallow, make bubble in the liquid plastics separate out in the shallow section, through the repeated operation, make bubble reduce in the liquid plastics, the quality of extruding has been improved like this.

Drawings

FIG. 1 is a schematic illustration of the present utility model;

FIG. 2 is a front view of FIG. 1 of the present utility model;

in the figure:

11. a screw body; 12. a charging section; 13. an extrusion section; 14. a homogenizing section; 15. the master batch enters the section; 16. a stirring section;

17. an agitating rod; 18. a first melting section; 19. a second melting section; 20. a first stirring block; 21. a deep section; 22. shallow sections;

23. and a second agitating block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 and 2, an embodiment of the present utility model provides a special efficient extrusion screw for PP plates of an extruder, which comprises a screw body 11, wherein the screw body 11 is divided into a feeding section 12, an extrusion section 13 and a homogenizing section 14;

the feeding section 12 comprises a master batch entering section 15 and a stirring section 16, and a threaded surface of the stirring section 16 is fixedly connected with a plurality of stirring rods 17;

the extrusion section 13 comprises a first melting section 18 and a second melting section 19, the pitch of the second melting section 19 is gradually reduced, and the first melting section 18 is spirally distributed on the screw main body 11 by a plurality of first stirring blocks 20 and the like;

the homogenizing segment 14 comprises a plurality of deep segments 21 and a plurality of shallow segments 22, and a plurality of second stirring blocks 23 are arranged in the deep segments 21.

The extrusion section 13 is arranged at the plastic extrusion end of the feeding section 12, the homogenizing section 14 is arranged at the plastic extrusion end of the extrusion section 13, the first melting section 18 is arranged at the minimum screw pitch end of the second melting section 19, the screw pitch of the first melting section 18 is equal to the minimum screw pitch of the second melting section 19, the screw grooves of the second melting section 19 are formed by being deep and shallow, the screw grooves of the first melting section 18 are equal to the screw grooves of the second melting section 19, the shallow sections 22 are arranged between the two deep sections 21, and the screw pitch of the shallow sections 22 is smaller than the screw pitch of the deep sections 21.

Working principle: firstly, the masterbatch enters into the charging section 12, the masterbatch is transported to the stirring section 16 through the masterbatch entering section 15, the screw pitch of the stirring section 16 becomes larger, so that more masterbatch can be entered, the stirring rod 17 can better mix the masterbatch and the auxiliary agent uniformly, the mixed masterbatch enters into the extrusion section 13, the screw pitch of the second melting section 19 becomes smaller gradually, the screw pitch becomes shallower gradually, so that the internal friction of the masterbatch is increased, the temperature inside the masterbatch can be increased, the heat inside the screw groove can be better transferred to the inside of the masterbatch, the first stirring block 20 stirs the fused masterbatch, the unmelted masterbatch is contacted with the inner wall, the unmelted masterbatch is melted, the melted masterbatch enters into the deep section 21, because the screw pitch of the deep section 21 is large, more liquid masterbatch can be stored, the second stirring block 23 stirs the liquid masterbatch, so that air bubbles are separated out, the liquid masterbatch enters into the shallow section 22, the screw pitch of the liquid masterbatch becomes finer, the liquid masterbatch is more fine and the operation flow is more smooth, and the air bubbles are repeatedly separated out, and the quality of the air bubbles is better.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special high-efficient extrusion screw of PP panel for extruder, includes screw rod main part (11), its characterized in that: the screw main body (11) is divided into a feeding section (12), an extrusion section (13) and a homogenizing section (14);

the feeding section (12) comprises a master batch entering section (15) and a stirring section (16), and a threaded surface of the stirring section (16) is fixedly connected with a plurality of stirring rods (17);

the extrusion section (13) comprises a first melting section (18) and a second melting section (19), the pitch of the second melting section (19) is gradually reduced, and the first melting section (18) is spirally distributed on the screw main body (11) by a plurality of first stirring blocks (20) and the like;

the homogenizing section (14) comprises a plurality of deep sections (21) and a plurality of shallow sections (22), and a plurality of second stirring blocks (23) are arranged in the deep sections (21).

2. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the extrusion section (13) is arranged at the plastic extrusion end of the feeding section (12), and the homogenizing section (14) is arranged at the plastic extrusion end of the extrusion section (13).

3. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the first melting section (18) is arranged at the minimum pitch end of the second melting section (19), and the pitch of the first melting section (18) is equal to the minimum pitch of the second melting section (19).

4. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the screw grooves of the second melting section (19) are changed from deep to shallow, and the screw grooves of the first melting section (18) are equal to the shallowest screw grooves of the second melting section (19).

5. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the shallow sections (22) are arranged between the two deep sections (21).

6. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the pitch of the shallow sections (22) is smaller than the pitch of the deep sections (21).

7. The efficient extrusion screw special for PP sheet materials for extruders according to claim 1, wherein: the tail end pitch of the screw body (11) is small and the screw groove is shallow.