Extrusion die for low-smoke halogen-free material of cable

Abstract

The utility model discloses a cable low-smoke halogen-free material extrusion die which comprises a connecting cylinder and a die body, a forming cavity is formed in the die body, an extrusion piece is arranged at the top of the die body, a die outlet is formed in the inner side of the extrusion piece, a second threaded pipe is arranged on the rear side of the die outlet, and the second threaded pipe is connected with the connecting cylinder. A second threaded groove is formed in the top of the die body, and the second threaded pipe is in threaded connection with the second threaded groove. According to the extrusion die, the second threaded pipe is connected with the second threaded groove, so that an extrusion piece is installed on the die body, the first attaching face is attached to the second attaching face, and therefore the extrusion piece and the inner side of the die body are connected more tightly; and a second sealing rubber ring is attached to a second sealing groove, so that the extrusion piece and the outer side of the mold body are sealed, on the contrary, a second threaded pipe is detached from a second threaded groove, the extrusion piece can be directly detached, and therefore the mold outlet and the mold can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of cable extrusion, in particular to an extrusion die for low-smoke and halogen-free cable materials. Background Technique

[0002] Low-smoke and halogen-free cables, also known as environmentally friendly cables, are a classification of wire sheath materials used in the wire and cable industry. The characteristics of such cables are that they release a relatively low amount of smoke when burning and do not contain halogens (such as fluorine, chlorine, bromine, iodine, astatine, etc.) and heavy metals such as lead, cadmium, chromium, mercury, etc. Therefore, in the event of a fire, low-smoke and halogen-free cables do not produce toxic gases such as hydrogen chloride and carbon monoxide, thereby reducing the harm to personnel and equipment. Low-smoke and halogen-free cables are environmentally friendly during production and use and meet environmental protection requirements. In the event of a fire, the combustion products of low-smoke and halogen-free cables do not cause serious damage to personnel and equipment, improving safety.

[0003] The existing Chinese patent publication number is CN210061936U, and the name is an extrusion die for low-smoke and halogen-free cable materials. The background technology of this patent clearly records that "in the prior art, during the extrusion process of low-smoke and halogen-free materials, material accumulation is likely to occur at the die orifice, and the accumulated material will adhere to the wire to form small particles, affecting its appearance", and the technical means of this patent are used to solve it. However, most of this technology and existing extrusion dies are of an integral structure. After the extrusion of low-smoke and halogen-free materials is completed, there may be residual materials inside the die. When it cools down, since the extrusion die is not convenient to disassemble, it is more troublesome to clean the inside of the die. Content of the Utility Model

[0004] The purpose of the utility model is to provide an extrusion die for low-smoke and halogen-free cable materials to solve the problems raised in the above background technology.

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

[0006] An extrusion die for low-smoke and halogen-free cable materials includes a connecting cylinder and a die body. A first threaded pipe is arranged inside the connecting cylinder, a first threaded groove is arranged at the rear side inside the die body, the first threaded pipe is in threaded connection with the first threaded groove, the inside of the die body includes a forming cavity, an extrusion part is arranged at the top of the die body, an outlet die orifice is arranged inside the extrusion part, a second threaded pipe is arranged at the rear side of the outlet die orifice, a second threaded groove is arranged at the top of the die body, and the second threaded pipe is in threaded connection with the second threaded groove.

[0007] In a preferred embodiment of the utility model, a first inclined surface is arranged at the top of the first threaded pipe, a second inclined surface is arranged inside the first threaded groove, and the first inclined surface abuts against the second inclined surface.

[0008] In a preferred embodiment of the present utility model, a first sealing groove is provided on the outer side of the first threaded pipe, a first sealing rubber ring is provided on the outer side of the first threaded groove, and the first sealing rubber ring is attached to the first sealing groove.

[0009] In a preferred embodiment of the present utility model, an extrusion port is provided at the top of the forming cavity, and the extrusion port is butted against the die outlet.

[0010] In a preferred embodiment of the present utility model, a first attaching surface is provided on the outer side of the extrusion port, a second attaching surface is provided on the inner side of the second threaded pipe, and the first attaching surface is attached to the second attaching surface.

[0011] In a preferred embodiment of the present utility model, a second sealing rubber ring is provided at the rear side of the extrusion part, a second sealing groove is provided on the outer side of the second threaded groove, and the second sealing rubber ring is attached to the second sealing groove.

[0012] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model.

[0013] Beneficial effects: The extrusion part is installed on the mold body by connecting the second threaded pipe to the second threaded groove, the extrusion port is butted against the die outlet, that is, the die is taken out through the die outlet. The first attaching surface is attached to the second attaching surface, so that the connection between the extrusion part and the inner side of the mold body is tighter, thereby reducing the residue of the low-smoke and halogen-free material. The second sealing rubber ring is attached to the second sealing groove, so that the outer side of the extrusion part and the mold body are sealed. Conversely, by disassembling the second threaded pipe from the second threaded groove, the extrusion part can be directly disassembled, thus facilitating the cleaning of the die outlet and the mold.

[0014] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it in accordance with the content of the description, the following takes the preferred embodiments of the present utility model and combines with the drawings to describe in detail as follows. The specific implementation manners of the present utility model are given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the main structure in an extrusion mold for low-smoke and halogen-free cable material;

[0017] Figure 2 It is a schematic diagram of the explosion structure in an extrusion mold for low-smoke and halogen-free cable material;

[0018] Figure 3It is a schematic cross-sectional structure diagram of an extruding die for low-smoke and halogen-free cable material;

[0019] Figure 4 It is a schematic connection structure diagram between the die outlet and the die in an extruding die for low-smoke and halogen-free cable material;

[0020] Figure 5 It is a schematic cross-sectional structure diagram of a die in an extruding die for low-smoke and halogen-free cable material.

[0021] In the figure: 1. Connecting cylinder; 11. First threaded pipe; 12. First inclined surface; 13. First sealing groove; 2. Die body; 21. First threaded groove; 22. Second inclined surface; 23. First sealing rubber ring; 3. Forming cavity; 31. Extrusion port; 32. Second sealing groove; 33. Second threaded groove; 34. First facing; 4. Extruded part; 41. Die outlet; 42. Second threaded pipe; 43. Second facing; 44. Second sealing rubber ring. Specific embodiments

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0023] Please refer to Figures 1-5 , an extruding die for low-smoke and halogen-free cable material of the present invention includes a connecting cylinder 1 and a die body 2. The die body 2 is the main body of the extruding die, that is, by extruding the low-smoke and halogen-free cable material. The connecting cylinder 1 is the rear structure of the die, that is, it connects the die body 2. A first threaded pipe 11 is arranged inside the connecting cylinder 1, and a first threaded groove 21 is arranged at the rear side inside the die body 2. The first threaded pipe 11 and the first threaded groove 21 are in threaded connection. By connecting the first threaded pipe 11 with the first threaded groove 21, the connecting cylinder 1 and the die body 2 are connected to each other. A first inclined surface 12 is arranged at the top of the first threaded pipe 11, and a second inclined surface 22 is arranged inside the first threaded groove 21. By attaching the first inclined surface 12 to the second inclined surface 22, the inner connection between the connecting cylinder 1 and the die body 2 is made more compact, avoiding the low-smoke and halogen-free cable material at the inner connection. A first sealing groove 13 is arranged outside the first threaded pipe 11, and a first sealing rubber ring 23 is arranged outside the first threaded groove 21. That is, by attaching the first sealing rubber ring 23 to the first sealing groove 13, the outer connection between the connecting cylinder 1 and the die body 2 is sealed. Conversely, by disassembling the first threaded pipe 11 on the first threaded groove 21, the connecting cylinder 1 and the die body 2 are disassembled from each other, so as to facilitate the cleaning of the inside.

[0024] The interior of the mold body 2 includes a forming cavity 3. At the top of the forming cavity 3, there is an extrusion outlet 31. The forming cavity 3 is the forming place for the low-smoke and halogen-free material, and it is extruded through the extrusion outlet 31. At the top of the mold body 2, there is an extrusion part 4. Inside the extrusion part 4, there is a mold outlet 41. The extrusion part 4 is used to drive the installation of the mold outlet 41. The extrusion outlet 31 is docked with the mold outlet 41, that is, the mold is taken out through the mold outlet 41.

[0025] At the rear side of the mold outlet 41, there is a second threaded pipe 42. At the top of the mold body 2, there is a second threaded groove 33. The second threaded pipe 42 is threadedly connected to the second threaded groove 33. By connecting the second threaded pipe 42 to the second threaded groove 33, the extrusion part 4 is installed on the mold body 2. On the outside of the extrusion outlet 31, there is a first bonding surface 34. Inside the second threaded pipe 42, there is a second bonding surface 43. By attaching the first bonding surface 34 to the second bonding surface 43, the connection between the extrusion part 4 and the inside of the mold body 2 is made closer, thereby reducing the residue of the low-smoke and halogen-free material. At the rear side of the extrusion part 4, there is a second sealing rubber ring 44. Outside the second threaded groove 33, there is a second sealing groove 32. By attaching the second sealing rubber ring 44 to the second sealing groove 32, the outside of the extrusion part 4 and the mold body 2 are sealed. Conversely, by disassembling the second threaded pipe 42 on the second threaded groove 33, the extrusion part 4 can be directly disassembled, thus facilitating the cleaning of the mold outlet 41.

[0026] The working principle of the present utility model is as follows: By connecting the first threaded pipe 11 to the first threaded groove 21, the connecting cylinder 1 and the mold body 2 are connected to each other. By attaching the first inclined surface 12 to the second inclined surface 22, the connection between the connecting cylinder 1 and the inside of the mold body 2 is made closer, avoiding the low-smoke and halogen-free material at the inner connection. By attaching the first sealing rubber ring 23 to the first sealing groove 13, the outer connection between the connecting cylinder 1 and the mold body 2 is sealed. By connecting the second threaded pipe 42 to the second threaded groove 33, the extrusion part 4 is installed on the mold body 2. The extrusion outlet 31 is docked with the mold outlet 41, that is, the mold is taken out through the mold outlet 41. By attaching the first bonding surface 34 to the second bonding surface 43, the connection between the extrusion part 4 and the inside of the mold body 2 is made closer, thereby reducing the residue of the low-smoke and halogen-free material. By attaching the second sealing rubber ring 44 to the second sealing groove 32, the outside of the extrusion part 4 and the mold body 2 are sealed. Conversely, by disassembling the second threaded pipe 42 on the second threaded groove 33, the extrusion part 4 can be directly disassembled.

[0027] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cable low-smoke halogen-free material extrusion die, comprising a connecting tube (1) and a die body (2), characterized in that: A first threaded tube (11) is arranged on the inner side of the connecting tube (1), a first threaded groove (21) is arranged on the inner rear side of the mold body (2), the first threaded tube (11) is threadedly connected to the first threaded groove (21), the mold body (2) comprises a molding cavity (3) inside, an extrusion piece (4) is arranged on the top of the mold body (2), a die outlet (41) is arranged on the inner side of the extrusion piece (4), a second threaded tube (42) is arranged on the rear side of the die outlet (41), a second threaded groove (33) is arranged on the top of the mold body (2), the second threaded tube (42) is threadedly connected to the second threaded groove (33).

2. A cable low-smoke halogen-free material extrusion die according to claim 1, characterized in that: A first inclined surface (12) is arranged at the top of the first threaded tube (11), a second inclined surface (22) is arranged inside the first thread groove (21), and the first inclined surface (12) is attached to the second inclined surface (22).

3. A cable low-smoke halogen-free material extrusion die according to claim 1, characterized in that: A first sealing groove (13) is arranged on the outside of the first threaded tube (11), a first sealing rubber ring (23) is arranged on the outside of the first threaded groove (21), and the first sealing rubber ring (23) is attached to the first sealing groove (13).

4. The cable low-smoke halogen-free material extrusion die according to claim 1, characterized in that: The top of the molding cavity (3) is provided with an extrusion port (31), and the extrusion port (31) is connected to the die outlet (41).

5. A cable low-smoke halogen-free material extrusion die according to claim 4, characterized in that: A first veneer (34) is arranged on the outside of the extrusion port (31), a second veneer (43) is arranged on the inside of the second threaded tube (42), and the first veneer (34) is attached to the second veneer (43).

6. The low-smoke halogen-free cable material extrusion die according to claim 1, characterized in that: A second sealing rubber ring (44) is arranged on the rear side of the extruded component (4), a second sealing groove (32) is arranged on the outside of the second thread groove (33), and the second sealing rubber ring (44) is attached to the second sealing groove (32).

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