阅读说明：本技术 可调整熔体压力的发泡挤出螺杆及其改装使用方法 (Foaming extrusion screw capable of adjusting melt pressure and refitting and using method thereof ) 是由 范卫红 于 2021-09-17 设计创作，主要内容包括：本发明涉及挤出设备零部件技术领域,公开了一种可调整熔体压力的发泡挤出螺杆及其改装使用方法,包括螺杆本体,螺杆本体上由下料压缩段、预塑化段、压缩塑化段、压缩挤出段和混炼段组成,混炼段包括分流段、调压部和锥型头；首先,调压部的设置有效的增大螺杆的物料挤出压力,实现了连续挤出生产,避免了原材料的浪费。其次,可根据不同的需求对螺杆调压部进行改装,以此满足不同所需挤出压力大小,使得螺杆实用性更高。(The invention relates to the technical field of extrusion equipment parts and discloses a foaming extrusion screw capable of adjusting melt pressure and a modification and use method thereof, wherein the foaming extrusion screw comprises a screw body, the screw body consists of a blanking compression section, a preplasticizing section, a compression plasticizing section, a compression extrusion section and a mixing section, and the mixing section comprises a flow distribution section, a pressure regulating section and a conical head; firstly, the pressure regulating part is arranged to effectively increase the material extrusion pressure of the screw, so that continuous extrusion production is realized, and the waste of raw materials is avoided. Secondly, can reequip the screw pressure regulating part according to the demand of difference to this satisfies different required extrusion pressure sizes, makes the screw rod practicality higher.)

1. A foaming extrusion screw capable of adjusting melt pressure comprises a screw body (1), wherein the screw body (1) consists of a blanking compression section (2), a preplasticizing section (3), a compression plasticizing section (4), a compression extrusion section (5) and a mixing section (6), and is characterized in that the mixing section (6) comprises a flow dividing section, a pressure adjusting section (62) and a conical head (63);

the flow dividing section is formed by arranging a plurality of lugs (61) arranged at intervals along the circumferential direction of the screw body (1); the pressure regulating part (62) is positioned between the flow dividing section and the conical head (63); the pressure regulating part (62) is a plurality of pressure regulating rings (621) arranged at intervals along the length direction of the screw body (1).

2. The adjustable melt pressure foaming extrusion screw of claim 1, wherein the pressure regulating ring (621) is a circular ring structure with a closed outer circle.

3. The foaming extrusion screw capable of adjusting the melt pressure according to claim 1, wherein the pressure regulating ring (621) is a circular ring structure having a plurality of notches (622) formed on an outer side wall thereof, the notch (622) is an arc-shaped opening, and the plurality of notches (622) are uniformly arranged along a circumferential direction of the pressure regulating ring (621).

4. The melt pressure adjustable foaming extrusion screw according to claim 1, wherein the pressure regulating rings (621) are provided in an amount of 1 to 3 in the longitudinal direction of the screw body (1).

5. The method for refitting the screw is applied to the foaming extrusion screw capable of adjusting the melt pressure as set forth in any one of claims 1-4, and is characterized by comprising the following steps:

s1, acquiring and judging whether the extrusion pressure of the screw is in a reasonable range when the screw is used for production and processing;

s2, if the extrusion pressure is larger than a preset value, opening the pressure regulating ring (621) or further grinding a notch (622) formed in the pressure regulating ring (621) to enlarge the notch (622);

s3, if the extrusion pressure is smaller, the gap formed in the pressure regulating ring (621) is welded, so that the pressure regulating ring (621) forms a closed annular structure without the gap.

Technical Field

The invention relates to the technical field of extrusion equipment parts, in particular to a foaming extrusion screw capable of adjusting melt pressure and a refitting and using method thereof.

Background

The foaming extrusion screw is an important part for plasticizing, extruding and molding materials by an extruder, and the performance of the screw plays a decisive role in the quality of extruded products. Different products are produced by the screw of the extruder correspondingly, different screws are needed, the existing foaming extrusion screw generally comprises a blanking compression section, a preplasticizing section, a compression plasticizing section, a compression extrusion section and a mixing section, however, in the actual production and processing, the existing screw does not have a pressure regulating structure, the continuous foaming extrusion is affected mostly because the extrusion pressure is too small, the product output is unstable, and the continuous extrusion production cannot be realized; secondly, the extrusion pressure of the existing screw structure is not adjustable, the screw can not be simply refitted to the screw to meet the extrusion production requirement of the screw under various environmental conditions, and the practicability is low.

Disclosure of Invention

The embodiment of the application solves the problem that the extrusion pressure of the foaming extrusion screw is not convenient to change in the prior art by providing the foaming extrusion screw with adjustable melt pressure and the refitting and using method thereof, realizes the convenience in adjusting the extrusion pressure of the foaming extrusion screw, and improves the production quality of the foaming plate.

On one hand, the embodiment of the application provides a foaming extrusion screw capable of adjusting melt pressure, which comprises a screw body, wherein the screw body consists of a blanking compression section, a preplasticizing section, a compression plasticizing section, a compression extrusion section and a mixing section, and the mixing section comprises a flow dividing section, a pressure adjusting section and a conical head;

the flow dividing section is formed by arranging a plurality of lugs arranged at intervals along the circumferential direction of the screw body; the pressure regulating part is positioned between the flow dividing section and the conical head; the pressure regulating part is a plurality of pressure regulating rings arranged at intervals along the length direction of the screw body.

Furthermore, the pressure regulating ring is of a circular ring structure with a closed outer circle.

Further, the pressure regulating ring is a circular ring-shaped structure with a plurality of notches formed in the outer side wall, each notch is an arc-shaped opening and is multiple, and the notches are evenly distributed along the circumferential direction of the pressure regulating ring.

Furthermore, 1-3 pressure regulating rings are arranged along the length direction of the screw body.

In another aspect, the present embodiments provide a method of retrofitting a screw for use with the aforementioned melt pressure-regulated foaming extrusion screw, the method of retrofitting comprising the steps of: s1, judging whether the extrusion pressure of the screw is in a reasonable range when the screw is used for production and processing; s2, if the extrusion pressure is larger than a preset value, opening the pressure regulating ring or further polishing a notch formed in the pressure regulating ring to enlarge the notch; and S3, if the extrusion pressure is smaller, welding and repairing the notch formed on the pressure regulating ring, so that the pressure regulating ring forms a closed annular structure without the notch.

The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:

1. owing to set up the accent splenium at the tip of screw rod body, so can improve the outlet pressure of screw rod body, when extruding the material, can improve the foaming multiplying power to satisfy current technology demand, effectively solved the problem of the outlet pressure of the extruder of being not convenient for adjust among the prior art, and then realized conveniently adjusting the outlet pressure of current extruder, improve the quality of foaming product.

2. Owing to set up the breach on the lateral wall of pressure regulating ring, can be convenient for reduce the outlet pressure of extruder, so can be according to the production needs of difference, the tip of extruding the screw rod to the foaming is reequiped, and then can be convenient for adjust the extrusion pressure of foaming extrusion screw rod when using, effectively solved the foaming extrusion screw rod among the prior art when using, its extrusion pressure is not convenient for adjust the problem, and then realized being convenient for the foaming extrusion screw rod reequips, make the foaming extrusion screw rod can adapt to the production demand when using.

Drawings

FIG. 1 is a schematic view of the overall structure of a foaming extrusion screw in the example of the present application;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic view of a screw structure with a notched pressure regulating ring according to an embodiment of the present disclosure;

FIG. 4 is an enlarged schematic view at B of FIG. 3;

in the figure: 1. a screw body; 2. a blanking compression section; 21. a first thread segment; 3. a preplasticizing section; 31. a second thread segment; 4. a compression plasticizing section; 41. a third thread segment; 5. compressing the extrusion section; 51. a fourth thread segment; 6. a mixing section; 61. a bump; 62. a pressure regulating part; 621. a voltage regulating ring; 622. a notch; 63. a conical head.

Detailed Description

The application embodiment discloses and provides a foaming extrusion screw rod of adjustable fuse-element pressure and repacking application method thereof, the technical problem that the screw rod is used for extrusion pressure undersize in the production and leads to unable continuous extrusion production among the prior art is solved, and present screw rod is not convenient for realize the demand that pressure regulation and control is applicable to different production facility or production technology through simple repacking, this application is equipped with pressure regulating part 62 through mixing section 6 at screw rod body 1, extrusion pressure has been improved, extrusion continuous production has been realized, secondly, can carry out simple and convenient repacking realization extrusion pressure size to pressure regulating ring 621 according to the generating environment needs of difference, make the screw rod can be applicable to multiple production environment, equipment, the technology is required, the practicality of screw rod has been improved greatly.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Example one

Referring to fig. 1, a foaming extrusion screw capable of adjusting melt pressure comprises a screw body 1 in a shape of a long and thin cone, wherein the large end of the screw body 1 is matched with the position of a feed port of an extrusion cylinder, and the small end of the screw body 1 is matched with the position of a discharge port of the extrusion cylinder. The screw body 1 is composed of a blanking compression section 2, a preplasticizing section 3, a compression plasticizing section 4, a compression extrusion section 5 and a mixing section 6.

Guide threads are distributed on the blanking compression section 2, the preplasticizing section 3, the compression plasticizing section 4 and the compression extrusion section 5. The guide thread of each section is named as a first thread section 21, a second thread section 31, a third thread section 41 and a fourth thread section 51 in sequence along the direction from the large end to the small end of a screw body 1, the thread pitch of each section is approximately small, the first thread section 21, the third thread section 41, the fourth thread section 51 and the second thread section 31 in sequence, the blanking compression section 2 is used for feeding and propelling materials, the preplasticizing section 3 performs preliminary plasticization on the materials, the subsequent plasticizing quality is improved, the compression plasticizing section 4 is used for further processing the preplasticized materials, the internal stress of the materials is uniform, the compression extrusion section 5 outputs the materials quantitatively at high pressure, the mixing section 6 plays a role in dispersing mixed melt, foaming agents are uniformly diffused in the materials, the proportion optimization of the section lengths can be realized, the foaming ratio is effectively improved, and the stable output of products is further improved.

Referring to fig. 2, 3 and 4, the kneading section 6 includes a flow dividing section, a pressure regulating section 62 and a conical head 63, the flow dividing section is formed by arranging a plurality of projections 61 arranged at intervals along the circumferential direction of the screw body 1, and the conical head 63 is fixedly connected to the end of the screw body 1 and is located at the tail end of the extrusion cylinder. Pressure regulating portion 62 is located between reposition of redundant personnel section and the tapered head 63, and pressure regulating portion 62 is a plurality of pressure regulating rings 621 that set up along 1 length direction interval of screw rod body, and pressure regulating ring 621 is provided with 1-3 along 1 length direction of screw rod body, and in this application embodiment, the quantity preference of pressure regulating ring 621 is 2. The pressure regulating ring 621 is a circular ring structure with an outer circle closed and no gap. In addition, the pressure regulating ring 621 may also be a circular ring-shaped structure having a plurality of notches 622 formed on an outer side wall thereof, wherein the notches 622 are arc-shaped openings, the plurality of notches 622 are uniformly arranged along a circumferential direction of the pressure regulating ring 621, and the number of the notches 622 is set to be 4-6 optimally. The width of the pressure regulating ring 621 is determined according to the size of the extrusion cylinder, the screw body 1 and the foaming extrusion processing requirement. The setting of pressure regulating portion 62 makes the material pile up here and extrudes again to increased extrusion pressure, better realization continuous extrusion production, can not lead to the material to extrude into the product or can not realize continuous extrusion production because of the pressure undersize, great reduction the loss of material, improved the quality of extrusion production.

Example two

Referring to fig. 1 to 4, on the other hand, the embodiment of the present application further discloses a method for modifying and using a screw, which is applied to the screw of the first embodiment, and the specific method for modifying and using the screw is as follows:

firstly, judging whether the extrusion pressure of the screw is in a reasonable range during production and processing according to production acquisition, and correspondingly modifying the pressure regulating part 62 of the screw if the extrusion pressure is larger or smaller;

if the extrusion pressure is judged to be larger, the pressure adjusting ring 621 is opened, or a notch 622 formed in the pressure adjusting ring 621 is polished, so that the notch 622 is further enlarged;

when the extrusion pressure is judged to be small, the gap formed in the pressure regulating ring 621 is welded, so that the pressure regulating ring 621 forms a closed non-gap annular structure or reduces the size of the gap.

It should be noted that, the above method for modifying and using can be flexibly modified according to the extrusion pressure of the screw under the actual environment, equipment and process requirements. And secondly, correspondingly polishing the whole refitting repair position after refitting, and putting the refitted repair position into extrusion production for use.

In summary, the foaming extrusion screw capable of adjusting the melt pressure and the modified using method thereof provided by the embodiments of the present application have the following advantages and effects. Before the repacking, because set up pressure regulating portion 62, increased material extrusion pressure for prior art's screw rod, better realized continuous extrusion production, avoided leading to unable extrusion or unable continuous extrusion production because of pressure inadequately, avoided the waste of raw and other materials. In actual input, the extrusion pressure that is used for under different environment, equipment and the technological requirement also is different, can reequip the screw rod and use again this moment, specifically for carrying out the opening or weld repair to pressure regulating ring 621 of pressure regulating portion 62 to realize the regulation of extrusion pressure size, this repacking means is simple and convenient easy to operate, makes the screw rod have very high practicality.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.