CN215791637U

CN215791637U - TPV cladding tubular product extrusion tooling

Info

Publication number: CN215791637U
Application number: CN202121556366.9U
Authority: CN
Inventors: 吴麟琦
Original assignee: Jiangsu Baodi Automation Equipment Co ltd
Current assignee: Jiangsu Baodi Automation Equipment Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-02-11
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to the field of TPV coated pipe production, and particularly discloses a TPV coated pipe extrusion die which comprises a first die body and a second die body, wherein a feeding body is arranged above the first die body, an injection molding flow channel is formed among the first die body, the second die body and the feeding body, a first opening die and a second opening die are arranged at the front end of the first die body, the first opening die is arranged at the outer side of the second opening die, a working pipe is arranged in a die cavity of the second die body, a third die body is arranged among the working pipe, the second die body, the first opening die and the second opening die, the third die body is arranged at the end part of the second die body, an extrusion flow channel is formed among the first die body, the second die body, the first opening die, the second opening die and the third die body, an air channel is formed among the second die body, the third die body and the working pipe, and an air exhaust device is arranged at one side far away from the third die body. The utility model obviously improves the surface smoothness of the coated product and the adhesive force of the coating layer by controlling the air pressure of the inner cavity, and improves the molding rate of the pipe.

Description

TPV cladding tubular product extrusion tooling

Technical Field

The utility model belongs to the field of production of TPV (thermoplastic vulcanizate) coated pipes, and particularly relates to an extrusion die for TPV coated pipes.

Background

The TPV knitted composite pipe product is a new product in the current market and is mainly used for new energy automobiles. Traditional tubular product extrusion tooling from the project organization and use operation, all is not fit for TPV cladding tubular product extrusion moulding, and the ubiquitous coating adhesive force is not strong, extrude from the condition such as vacuum leaking, has done the improvement to TPV working tube cladding die to this condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a TPV (thermoplastic vulcanizate) coated pipe extrusion die, which is characterized in that air is exhausted from an air passage through air exhaust equipment to reduce the air pressure of an inner cavity, so that a dissolved material is extruded and flows out from an injection runner and an extrusion runner and then is coated on a working pipe, the surface smoothness of the coated working pipe and the adhesive force of a coating layer are obviously improved, and the molding rate of the pipe is improved.

In order to solve the technical problem, the utility model provides a TPV coated pipe extrusion die, which comprises a first die body and a second die body, wherein the second die body is embedded in the first die body, a material inlet body is arranged above the first die body, a material inlet of the material inlet body is communicated with die cavities in the first die body and the second die body, an injection molding runner is formed among the first die body, the second die body and the material inlet body, a first opening die and a second opening die are arranged at the front end of the first die body, the first opening die is arranged at the outer side of the second opening die, a working pipe is arranged in the die cavity of the second die body, a third die body is arranged among the working pipe, the second die body, the first opening die and the second opening die, the third die body is arranged at the end part of the second die body, and an extrusion runner is formed among the first die body, the second die body, the first opening die, the second opening die and the third die body, an air passage is formed among the second die body, the third die body and the working pipe, and one side of the air passage far away from the third die body is provided with air pumping equipment.

Further, the injection molding runner is communicated with the extrusion runner.

Further, the first port die is fixed by a first pressing block.

Further, the second die is fixed through a second pressing block.

Further, the first die is connected with the first die body through an adjusting bolt.

The utility model has the beneficial effects that:

1. the molten material flows out after being extruded from the injection runner and the extrusion runner and then is coated on the working tube, and the coating effect is better due to the extrusion mode;

2. air is extracted from the air passage through air extraction equipment, so that the air pressure of the inner cavity is reduced, the dissolved material can be better coated on the working pipe, the surface smoothness of the coated product and the adhesive force of a coating layer are obviously improved, and the forming rate of the pipe is improved;

3. by arranging the adjusting bolt, the eccentricity of the wall thickness can be adjusted and the operation is easy, and the uniformity and the concentricity of the coating layer are ensured.

Drawings

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

FIG. 1 is a schematic structural view of a TPV clad pipe extrusion die of the present invention;

in the figure: 1-material feeding body, 2-first die body, 3-second die body, 4-first die body, 41-first pressing block, 5-second die body, 51-second pressing block, 6-working pipe, 7-third die body, 8-air extraction equipment, 100-injection molding runner and 110-extrusion runner.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In one embodiment of the present invention, as shown in fig. 1, a TPV clad pipe extrusion die comprises a first die body 1 and a second die body 2, the second die body 2 is embedded in the first die body 1, a material inlet body 3 is arranged above the first die body 1, a material inlet of the material inlet body 3 is communicated with die cavities in the first die body 1 and the second die body 2, an injection runner 100 is formed between the first die body 1, the second die body 2 and the material inlet body 3, a first port die 4 and a second die 5 are arranged at the front end of the first die body 1, the first port die 4 is connected with the first die body 2 through an adjusting bolt, the first port die 4 is arranged outside the second die 5, the first port die 4 is fixed through a first pressing block 41, the second die 5 is fixed through a second pressing block 51, a working pipe 6 is arranged in the die cavity of the second die body 2, a third die body 7 is arranged between the working pipe 6, the second die body 2, the first die 4 and the second die 5, the third die body 7 is arranged at the end part of the second die body 2, an extrusion flow channel 110 is formed between the first die body 1, the second die body 2, the first port die 4, the second port die 5 and the third die body 7, the injection flow channel 100 is communicated with the extrusion flow channel 110, an air channel 12 is formed between the second die body 2, the third die body 7 and the working pipe 6, and one side of the air channel 12 far away from the third die body 7 is provided with an air extraction device 8.

Plastics enter the injection molding runner 100 and the extrusion runner 110 from the feeding body 3, and through the extrusion of the two runners, the dissolved materials can be tightly coated outside the working pipe 6, and meanwhile, air is extracted from the air passage 12 through the air extraction equipment 8 to reduce the air pressure, so that the dissolved materials can be better coated on the working pipe 6, the surface smoothness of the coated product is obviously improved, the adhesive force of a coating layer is obviously improved, the molding rate of the pipe is improved, and the coating effect is better; the adjustment of the adjusting bolt ensures that the eccentricity of the wall thickness can be adjusted and is easy to operate, and the uniformity and the concentricity of the coating layer are ensured.

The above disclosure is only one preferred embodiment of the present invention, and certainly should not be construed as limiting the scope of the utility model, which is defined by the claims and their equivalents.

Claims

1. The TPV coated pipe extrusion die is characterized by comprising a first die body (1) and a second die body (2), wherein the second die body (2) is embedded in the first die body (1), a material inlet body (3) is arranged above the first die body (1), a material inlet of the material inlet body (3) is communicated with die cavities in the first die body (1) and the second die body (2), an injection molding runner (100) is formed among the first die body (1), the second die body (2) and the material inlet body (3), a first opening die (4) and a second opening die (5) are arranged at the front end of the first die body (1), the first opening die (4) is arranged on the outer side of the second opening die (5), a working pipe (6) is arranged in the die cavity of the second die body (2), a third die body (7) is arranged between the working pipe (6), the second die body (2), the first opening die (4) and the second opening die (5), the third die body (7) is arranged at the end part of the second die body (2), an extrusion flow channel (110) is formed among the first die body (1), the second die body (2), the first die body (4), the second die body (5) and the third die body (7), an air passage (12) is formed among the second die body (2), the third die body (7) and the working pipe (6), and an air pumping device (8) is arranged on one side, far away from the third die body (7), of the air passage (12).

2. The TPV clad pipe extrusion die of claim 1, wherein the injection runner (100) is in communication with the extrusion runner (110).

3. A TPV clad pipe extrusion die according to claim 1, wherein the first die (4) is fixed by a first pressing block (41).

4. A TPV clad pipe extrusion die according to claim 1, wherein the second die (5) is fixed by a second press block (51).

5. A TPV clad pipe extrusion die according to claim 1, wherein the first die (4) is connected to the first die body (2) by means of adjusting bolts.