CN211843131U

CN211843131U - Screw rod device for plastic extruder

Info

Publication number: CN211843131U
Application number: CN202020207225.5U
Authority: CN
Inventors: 邹旭东; 祁凯
Original assignee: Changzhou Weimao New Material Technology Co ltd
Current assignee: Changzhou Weimao New Material Technology Co ltd; Changzhou Weicai New Material Science and Technology Co Ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-11-03
Anticipated expiration: 2030-02-25

Abstract

The utility model relates to a technical field of plastics extrusion processing especially relates to a hob device for plastics extruder. Comprises a screw rod and an extrusion tube; the screw rod is arranged in the cavity of the extrusion pipe and is used for extruding the work material; the extrusion pipe is connected with the end part of the feeding port and has a cavity structure; wherein the surface of the screw rod is provided with a thread, and the thread comprises a uniform area, a melting area and a dispersing area; the uniform area is of an evenly distributed inclined thread structure and is used for building pressure and extruding a work material; the melting area is positioned in the middle of the screw rod and is used for extruding the working materials to melt plastics; the dispersion area is located the hob afterbody for carry out dispersion shaping with the work material. The utility model aims at providing a hob device for plastic extrusion machine to the defect that exists among the prior art for the extrusion is more abundant, and the yield improves, concrete extremely strong usability.

Description

Screw rod device for plastic extruder

Technical Field

The utility model relates to a technical field of plastics extrusion processing especially relates to a hob device for plastics extruder.

Background

Plastics are high molecular compounds, commonly called plastics or resins, which are made from monomers by polyaddition or polycondensation, can freely change the components and shape and form, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, pigments, etc. With the development of society, plastics have evolved into an indispensable material for use in life.

In the prior art, the screw threads on the screw rod for the common extrusion press are distributed roughly, and are rarely arranged according to the work station finely, so that the problems of insufficient extrusion of work materials and the like often occur, and the quality of finished products is poor.

In view of the above problems, the present designer is actively making research and innovation based on the practical experience and professional knowledge that is abundant over many years in engineering application of such products, and in cooperation with the application of theory, in order to design the screw rod device for the plastic extruder, so that the extrusion is more sufficient, the yield is improved, and the specific strong usability is achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hob device for plastic extrusion machine to the defect that exists among the prior art for the extrusion is more abundant, and the yield improves, concrete extremely strong usability.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

comprises a screw rod and an extrusion tube; the screw rod is arranged in the cavity of the extrusion pipe and is used for extruding the work material; the extrusion pipe is connected with the end part of the feeding port and has a cavity structure; wherein the surface of the screw rod is provided with a thread, and the thread comprises a uniform area, a melting area and a dispersing area; the uniform area is of an evenly distributed inclined thread structure and is used for building pressure and extruding a work material; the melting area is positioned in the middle of the screw rod and is used for extruding the working materials to melt plastics; the dispersion area is located the hob afterbody for carry out dispersion shaping with the work material.

Further, the device also comprises a motor, a charging bucket and a feeding port; the output end of the motor is connected with the screw rod and provides power for the rotation of the screw rod; the charging bucket is of a funnel structure, and the top opening of the charging bucket is used for receiving poured work materials; the top of the feeding port is communicated with the charging bucket and used for transferring work materials.

Further, the extruded tube includes a stir chamber; the stirring cavity is used for containing a work material and is matched with the screw rod to extrude the work material.

Further, the extrusion pipe also comprises a natural exhaust port and a vacuum exhaust port; the natural exhaust port is used for exhausting waste gas generated in the process of extruding the work material; the vacuum exhaust port is arranged behind the natural exhaust port and used for vacuum exhaust.

Furthermore, the device also comprises a flange plate; the flange plates are arranged among the plurality of extrusion pipes and are used for being fixedly connected.

Further, the device also comprises a heat transfer pipe and a heater; one end of the heat transfer pipe is connected with the heater, and the other end of the heat transfer pipe is connected with the extrusion pipe and used for transferring heat; the heater is used for heating the extrusion pipe to promote the deformation of the work material.

Further, the device also comprises a shaping port; the shaping opening is connected with the tail part of the extrusion pipe and used for shaping and discharging the work material.

Through the technical scheme of the utility model, can realize following technological effect:

through the cooperation that uses hob and extrusion intracavity wall, to the abundant friction of work material, arrange abundant screw thread according to the station is fine and smooth simultaneously on the hob so that the extrusion is more abundant, and the yield improves, concrete extremely strong usability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a drawing showing a screw and an extrusion tube of a screw device for a plastic extruder according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a screw rod device for a plastic extruder according to an embodiment of the present invention;

FIG. 3 is a schematic view of an internal structure of an extrusion tube of a screw rod device for a plastic extruder according to an embodiment of the present invention;

reference numerals: the device comprises a motor 1, a charging bucket 2, a feeding port 3, a screw rod 4, an extrusion pipe 5, a flange 6, a heat transfer pipe 7, a heater 8, a shaping port 9, a uniform region 41, a melting region 42, a dispersing region 43, a stirring cavity 51, a natural exhaust port 52 and a vacuum exhaust port 53.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be noted that the orientations and positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A screw device for a plastic extruder, as shown in fig. 1, 2 and 3, comprising a screw 4 and an extrusion tube 5; the screw rod 4 is arranged in the cavity of the extrusion pipe 5 and is used for extruding the work material; the extrusion pipe 5 is connected with the end part of the feeding port 3 and has a cavity structure; wherein, the surface of the screw rod 4 is provided with a screw thread which comprises a uniform area 41, a melting area 42 and a dispersing area 43; the uniform area 41 is of an evenly distributed inclined thread structure and is used for building pressure and extruding a work material; the melting zone 42 is positioned in the middle of the screw rod 4 and is used for extruding the working material to perform plastic melting; the dispersing area 43 is located at the tail part of the screw rod 4 and is used for dispersing and molding the work material.

As a preferable example of the above embodiment, as shown in fig. 2, the device further includes a motor 1, a material barrel 2 and a material inlet 3; the output end of the motor 1 is connected with the screw rod 4 and provides power for the rotation of the screw rod 4; the charging basket 2 is of a funnel structure, and the top opening of the charging basket is used for receiving poured work materials; the top of the feeding port 3 is communicated with the charging bucket 2 and used for transferring work materials.

In the actual operation process of producing the plastic strips, the prepared work materials are required to be poured into a material barrel 2 with a funnel structure and enter an extrusion pipe 5 through a feeding port 3 for extrusion. The specific extrusion process is that starter motor 1 supplies energy for hob 4 constantly stirs the work material in the extrusion pipe 5. The work material is continuously extruded due to the stirring power and the friction force, and finally, a finished product is output.

As a preference of the above embodiment, as shown in fig. 2 and 3, the extruding pipe 5 includes a stirring chamber 51; the stirring cavity 51 is used for accommodating a work material and is matched with the screw rod 4 to extrude the work material.

Specifically, the cavity structure of the extrusion tube 5 may be a stirring cavity 51, and when the material is held, the material is extruded by matching with the screw rod 4.

As a preference of the above embodiment, as shown in fig. 1 and 2, the extruding pipe 5 further includes a natural exhaust port 52 and a vacuum exhaust port 53; the natural exhaust port 52 is used for exhausting waste gas generated in the process of extruding the work material; the vacuum exhaust port 53 is provided behind the natural exhaust port 52 for vacuum exhaust.

As a preference of the above embodiment, as shown in fig. 2, the present invention further includes a flange 6; the flange plates 6 are arranged among the plurality of extrusion pipes 5 and are used for being fixedly connected.

Specifically, because of the time processing line is longer, and for processing convenience, design into the suitable 5 concatenations of extruded pipe of a plurality of sizes with extruded pipe 5 and form, can carry out fixed connection, convenient to detach clearance with flange 6 between a plurality of extruded pipes 5.

As a preference of the above embodiment, as shown in fig. 2, it further includes a heat transfer pipe 7 and a heater 8; one end of the heat transfer pipe 7 is connected with the heater 8, and the other end of the heat transfer pipe is connected with the extrusion pipe 5 and used for transferring heat; the heater 8 is used for heating the extrusion pipe 5 to promote deformation of the work material.

Specifically, during the extrusion of the work material, the extrusion process may be accelerated by heating the extruded tube 5. The heater 8 is started to generate heat, the heater 8 is communicated with the extrusion pipe 5 through the heat transfer pipe 7 to transfer the heat, the extrusion environment is optimized, and the production efficiency is improved.

As a preference of the above embodiment, as shown in fig. 2, the device further comprises a shaping opening 9; the shaping opening 9 is connected with the tail part of the extrusion pipe 5 and used for shaping and discharging the work material.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A screw rod device for a plastic extruder is characterized by comprising a screw rod (4) and an extrusion pipe (5); the screw rod (4) is arranged in a cavity of the extrusion pipe (5) and is used for extruding a work material; the extrusion pipe (5) is of a cavity structure; wherein the surface of the screw rod (4) is provided with a thread, and the thread comprises a uniform area (41), a melting area (42) and a dispersing area (43); the uniform area (41) is of an evenly distributed inclined thread structure and is used for building pressure and extruding a work material; the melting area (42) is positioned in the middle of the screw rod (4) and is used for extruding the work material to melt the plastic; the dispersion area (43) is located at the tail part of the screw rod (4) and used for dispersing and molding the work material.

2. The screw rod device for the plastic extruder according to claim 1, further comprising a motor (1), a material barrel (2) and a feeding port (3); the output end of the motor (1) is connected with the screw rod (4) and provides power for the rotation of the screw rod (4); the charging basket (2) is of a funnel structure, and the top opening of the charging basket is used for receiving poured work materials; the top of the feeding port (3) is communicated with the charging bucket (2) and used for transferring work materials.

3. Screw device for plastic extruders according to claim 1, characterized in that the extrusion tube (5) comprises a stirring chamber (51); the stirring cavity (51) is used for containing a work material and is matched with the screw rod (4) to extrude the work material.

4. Screw stem device for plastic extruders according to claim 3, characterized in that the extrusion tube (5) further comprises a natural vent (52) and a vacuum vent (53); the natural exhaust port (52) is used for exhausting waste gas generated in the process of extruding the work material; the vacuum exhaust port (53) is disposed behind the natural exhaust port (52) and used for vacuum exhaust.

5. Screw means for plastic extruders, according to claim 1, characterized by the fact that it comprises a flange (6); the flange plates (6) are arranged among the plurality of extrusion pipes (5) and are used for being fixedly connected.

6. A screw device for a plastic extruder according to claim 1, further comprising a heat transfer pipe (7) and a heater (8); one end of the heat transfer pipe (7) is connected with the heater (8), and the other end of the heat transfer pipe is connected with the extrusion pipe (5) and used for transferring heat; the heater (8) is used for heating the extrusion pipe (5) and promoting deformation of the work material.

7. Screw means for plastic extruders, according to claim 1, characterized by further comprising a sizing orifice (9); the shaping opening (9) is connected with the tail part of the extrusion pipe (5) and is used for shaping and discharging the work material.