Processing die for coated pipe

Abstract

The utility model relates to the related technical field of pipe machining equipment, in particular to a coated pipe machining die which comprises a die head and a die body, through grooves allowing an inner pipe to penetrate through are formed in the inner side of the die head and the inner side of the die body, and the die head and the die body are detachably connected. And an outer layer material runner is formed between the inner walls of the die head and the die body and the outer wall of the pipe. The method comprises the following steps: connecting a die head with a die body to form a die, enabling a pipe to pass through a die cavity, then extruding a coating material into an outer-layer material runner from a feeding runner, after the outer-layer material runner is filled with the coating material, starting a traction machine to continuously convey the pipe towards the direction of the die head, and coating the outer wall of the pipe with the coating material, cooling and sizing are conducted in the uniform moving process of the pipe, the coating material is continuously conveyed, it is guaranteed that the coating material on the outer wall of the pipe is high in uniformity and good in coating effect, meanwhile, the coating material can coat the outer wall of the inner pipe in the mold body, and the problem that an existing coating mold needs to make contact with a mold outlet, and consequently the coating material falls or is dispersed due to gravity is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe processing equipment, in particular to a coating pipe processing die. Background Art

[0002] A Chinese authorized patent (publication number: CN 215791637 U) discloses a TPV-coated pipe processing extrusion die, which includes a first die body and a second die body. An inlet body is arranged above the first die body. An injection molding runner is formed between the first die body, the second die body and the inlet body. A first die orifice and a second die orifice are arranged at the front end of the first die body. The first die orifice is arranged outside the second die orifice. A working pipe is arranged in the die cavity of the second die body. A third die body is arranged between the working pipe, the second die body, the first die orifice and the second die orifice. The third die body is arranged at the end of the second die body. An extrusion runner is formed between the first die body, the second die body, the first die orifice, the second die orifice and the third die body. An air passage is formed between the second die body, the third die body and the working pipe. An air extraction device is arranged on one side of the air passage far from the third die body.

[0003] However, considering its specific structure, the position where the coating material contacts the pipe is at the outlet of the die. When the coating material contacts the pipe at the outlet of the die, since the coating material has not cooled and solidified yet, problems such as dropping or scattering due to gravity are likely to occur. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a coating pipe processing die to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A coating pipe processing die, comprising:

[0007] A die head and a die body, through grooves for the pipe to penetrate are formed inside both the die head and the die body, and the die head and the die body are detachably connected;

[0008] An outer layer material flow channel is formed between the inner walls of the die head and the die body and the outer wall of the pipe.

[0009] For the coating pipe processing die as described above: an inlet flow channel is arranged at the side end of the die body, and the inlet flow channel is communicated with the outer layer material flow channel.

[0010] For the coating pipe processing die as described above: a guiding head is arranged at one end of the die body far from the die head, and the inner side of the guiding head is arranged in a conical-like structure.

[0011] The coated pipe processing die as described above: An internally threaded connection head is formed on the inner side of one end of the die head facing the die body. The internally threaded connection head can be inserted into the cylindrical groove formed on the die body and is threadedly connected to the internal thread on the inner wall of the cylindrical groove.

[0012] The coated pipe processing die as described above: A sub-button protrusion is further formed at the end of the internally threaded connection head, and a sub-button embedded part is formed on the inner side of the die body. When the internally threaded connection head is threadedly connected in the cylindrical groove, the sub-button protrusion is snapped into the sub-button embedded part.

[0013] The coated pipe processing die as described above: The length of the outer layer material flow channel located inside the die body is less than the length of the die body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] After connecting the die head and the die body to form a die, insert the pipe into the die, and then squeeze the coating material from the feed flow channel into the outer layer material flow channel. When the coating material fills the outer layer material flow channel, it is cooled and shaped. Start the tractor to continuously convey the pipe towards the die head. The outer wall of the pipe is coated with the coating material. During the uniform movement of the pipe, the coating material is continuously conveyed, ensuring high uniformity of the coating material on the outer wall of the pipe and good coating effect. At the same time, the coating material can be coated on the outer wall of the pipe inside the die body, eliminating the problem that the existing coating die needs to contact at the die outlet, resulting in the coating material falling or dispersing due to gravity. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the coated pipe processing die.

[0017] Figure 2 It is a top view of the coated pipe processing die.

[0018] Figure 3 It is Figure 1 A sectional view taken along the A-A direction in

[0019] Figure 4 It is a schematic structural diagram of the coated pipe processing die after the die head and the die body are separated.

[0020] Figure 5 It is a half-sectional view of the coated pipe processing die after the die head and the die body are separated.

[0021] Figure 6 It is a schematic structural diagram of the coated pipe processing die combined with the pipe.

[0022] In the figure: 1 - die head, 101 - internally threaded connection head, 102 - sub-button protrusion, 2 - die body, 201 - internal thread, 202 - sub-button embedded part, 3 - feed flow channel, 4 - guide head, 5 - outer layer material flow channel, 6 - pipe. Detailed implementation manners

[0023] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0024] The special term "exemplary" herein means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" herein does not have to be construed as superior to or better than other embodiments.

[0025] In addition, for better illustration of the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0026] Please refer to Figures 1-6 , in an embodiment of the present utility model, a processing die for coated pipes includes:

[0027] A die head 1 and a die body 2, through grooves for a pipe 6 to pass through are formed on the inner sides of the die head 1 and the die body 2, and the die head 1 and the die body 2 are detachably connected;

[0028] An outer layer material flow channel 5 is formed between the inner walls of the die head 1 and the die body 2 and the outer wall of the pipe 6.

[0029] A feed flow channel 3 is arranged at the side end of the die body 2, and the feed flow channel 3 is communicated with the outer layer material flow channel 5.

[0030] In this embodiment, after the die head 1 and the die body 2 are connected to form a die, the pipe 6 is inserted into the die, and then the coating material is extruded from the feed flow channel 3 into the outer layer material flow channel 5. When the outer layer material flow channel 5 is filled with the coating material, the tractor is started to continuously convey the pipe 6 towards the direction of the die head 1. The outer wall of the pipe 6 is coated with the coating material, and during the movement of the pipe 6, the coating material is continuously conveyed, ensuring high uniformity of the coating material on the outer wall of the pipe 6 and good coating effect. At the same time, the coating material can be coated on the outer wall of the pipe 6 within the die body 2, eliminating the problem that the existing coating die needs to contact at the die outlet, resulting in the coating material falling or dispersing due to gravity.

[0031] Further, a guiding head 4 is arranged at one end of the die body 2 away from the die head 1, and the inner side of the guiding head 4 is arranged in a conical-like structure, so as to facilitate the pipe 6 to be inserted into the die body 2 conveniently.

[0032] Please refer to Figures 3-5, one end of the die head 1 facing the die body 2 is formed with a threaded connection head 101. The threaded connection head 101 can be inserted into a cylindrical groove formed on the die body 2 and is threadedly connected to the internal thread 201 on the inner wall of the cylindrical groove. The die head 1 and the die body 2 are threadedly connected, which can effectively improve the firmness of the connection between the die head 1 and the die body 2. At the same time, it is convenient to disassemble, so as to facilitate the cleaning of the inner side of the mold, and it is also convenient to disassemble, repair, replace, etc. after the die head 1 or the die body 2 is damaged.

[0033] Preferably, a sub-button convex portion 102 is further formed at the end of the threaded connection head 101, and a sub-button embedded portion 202 is formed inside the die body 2. When the threaded connection head 101 is threadedly connected in the cylindrical groove, the sub-button convex portion 102 is snapped into the sub-button embedded portion 202. By providing the sub-button convex portion 102 and the sub-button embedded portion 202, the sealing performance after the connection between the die head 1 and the die body 2 is realized, effectively eliminating the problem of poor coating effect caused by the gap appearing after the connection between the die head 1 and the die body 2.

[0034] Among them, it should be noted that the length of the outer layer material flow channel 5 located inside the die body 2 is less than the length of the die body 2, so that after the pipe 6 is inserted, the bottom of the outer layer material flow channel 5 is effectively blocked, preventing material leakage.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A processing die for coated pipes, characterized in that, Including: A die head (1) and a die body (2), through grooves for a pipe (6) to penetrate are formed on the inner sides of the die head (1) and the die body (2), and the die head (1) and the die body (2) are detachably connected; An outer layer material flow channel (5) is formed between the inner walls of the die head (1) and the die body (2) and the outer wall of the pipe (6).

2. The processing die for coated pipes according to claim 1, wherein, A feed flow channel (3) is arranged at the side end of the die body (2), and the feed flow channel (3) is communicated with the outer layer material flow channel (5).

3. The processing die for coated pipes according to claim 1, characterized in that, A guide head (4) is arranged at one end of the die body (2) away from the die head (1), and the inner side of the guide head (4) is arranged in a conical-like structure.

4. A processing die for coated pipes according to claim 1, characterized in that, A threaded connection head (101) is formed on the inner side of one end of the die head (1) facing the die body (2), the threaded connection head (101) can be inserted into a cylindrical groove formed on the die body (2), and is threadedly connected with an internal thread (201) on the inner wall of the cylindrical groove.

5. The processing die for coated pipes according to claim 4, wherein A sub-button convex part (102) is further formed at the end of the threaded connection head (101), and a sub-button embedded part (202) is formed on the inner side of the die body (2). When the threaded connection head (101) is threadedly connected in the cylindrical groove, the sub-button convex part (102) is snapped into the sub-button embedded part (202).

6. The processing die for coated pipes according to claim 1, characterized in that, The length of the outer layer material flow channel (5) located in the die body (2) is less than the length of the die body (2).

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