CN220232812U - Cable co-extrusion device - Google Patents
Cable co-extrusion device Download PDFInfo
- Publication number
- CN220232812U CN220232812U CN202321462173.6U CN202321462173U CN220232812U CN 220232812 U CN220232812 U CN 220232812U CN 202321462173 U CN202321462173 U CN 202321462173U CN 220232812 U CN220232812 U CN 220232812U
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- CN
- China
- Prior art keywords
- insulating
- die
- insulation
- cable
- machine head
- Prior art date
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Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 229910001369 Brass Inorganic materials 0.000 claims description 9
- 239000010951 brass Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 31
- 239000011810 insulating material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 239000012774 insulation material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of cable co-extrusion production devices, and discloses a cable co-extrusion device, which comprises: the co-extrusion machine head is provided with a machine head insulation outlet; an insulating shielding shunt embedded inside the co-extruder head; the die sleeve assembly is arranged inside the insulating shielding shunt and is attached to the machine head insulating outlet. According to the utility model, the limit groove for connecting the die with the insulating shielding shunt is omitted, so that the wire inlet hole of the die sleeve base can be directly attached to the insulating wire outlet hole, and meanwhile, the diameter of the wire inlet hole of the die sleeve base is directly larger than or equal to that of the insulating wire outlet hole, so that no redundant material flows into the insulating shielding shunt from the die opening and the insulating wire outlet hole when the insulating material is extruded, and the problem that the appearance and the insulating performance of a wire core are influenced by wire knots generated on the surface of the extruded wire core by the reflow material is solved.
Description
Technical Field
The utility model relates to the field of cable co-extrusion production devices, in particular to a cable co-extrusion device.
Background
At present, only a conductor shielding and an insulating layer are needed to be extruded outside an insulating wire core conductor in a medium-voltage lightning-protection cable structure of a wind power blade, and a co-extrusion process is needed to be adopted for conductor shielding and insulation in order to prevent air gaps, dust or other impurities possibly existing between layers from affecting the electrical performance of a product. And the common co-extrusion production line of the cable production enterprises is divided into double-layer co-extrusion and three-layer co-extrusion. The double-layer co-extrusion needs to extrude the insulating layer firstly and then extrude the sheath, and special people need to carry out dust and dirt treatment in the production process of the insulating layer so as to avoid the problem that the product has poor dissolution loss resistance, influences the service life, the comprehensive performance and the like, and has the advantages of large equipment investment, inconvenient operation, low production efficiency, poor product quality and the like. When the extrusion of the outermost insulating shielding material is stopped, a small part of the insulating material flows back into the insulating shielding shunt flow channel under the action of pressure, the crosslinking reaction can occur after the insulating material stays in the die cavity for a long time, and the insulating material is uncontrollably and randomly hung on the extruded wire core insulator, so that a wire knot is formed on the surface of the extruded wire core, even coke particles are mixed in the insulating layer, and the appearance and the insulating performance of the wire core are seriously influenced.
Disclosure of Invention
The utility model aims to solve the technical problems in the background art and provides a cable co-extrusion device which can prevent insulation materials from flowing into an insulation shielding shunt and then flowing back into a die sleeve.
In order to achieve the above object, the present utility model provides a cable coextrusion device comprising:
the co-extrusion machine head is provided with a machine head insulation outlet;
an insulating shielding shunt embedded inside the co-extruder head;
the die sleeve assembly is arranged inside the insulating shielding shunt and is attached to the machine head insulating outlet.
Preferably, the die sleeve assembly comprises:
the die sleeve seat is positioned in the insulating shielding shunt;
the die is arranged in the die sleeve seat, and the end part of the die is attached to the insulation outlet of the machine head.
Preferably, the die sleeve assembly further comprises:
the embedded part is arranged at the end part of the die and is in contact connection with the machine head insulation outlet.
Preferably, the insert is made of brass.
Preferably, the diameter of the wire inlet hole at the end part of the die is larger than or equal to the diameter of the insulation wire outlet of the machine head.
Preferably, the cable co-extrusion device further comprises an insulation shielding material injection port, an insulation material injection port and a conductor shielding material injection port which are respectively positioned at the top of the co-extrusion machine head.
Preferably, the insulating shielding material injection port is communicated with an insulating shielding material flow passage, and the port of the insulating shielding material flow passage is attached to the die sleeve assembly.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the limit groove for connecting the die with the insulating shielding shunt is omitted, so that the bottom of the die is in contact with the insulating shielding shunt, the wire inlet of the die sleeve base can be directly attached to the insulating wire outlet, and meanwhile, the diameter of the wire inlet of the die sleeve base is larger than or equal to that of the insulating wire outlet, so that no redundant material flows into the insulating shielding shunt from the die opening and the insulating wire outlet when the insulating material is extruded, and the problem that the appearance and the insulating performance of a wire core are influenced by wire knots generated on the surface of the extruded wire core by the reflow material is solved;
according to the utility model, the brass embedded part is added at the bottom of the die, and the characteristics of high thermal expansion coefficient and low hardness of brass are utilized, so that the die can be more attached to an insulation outlet of the die after the co-extrusion die reaches the normal starting temperature, the hardness of brass is lower than that of tungsten steel, an insulation outlet damage device of the die is not damaged, an insulation shielding material runner is blocked by the embedded part, a three-layer co-extrusion device is changed into a double-layer co-extrusion device, and the insulation shielding material can not flow into the insulation shielding material runner due to pressure problems when the extrusion of the insulation material is stopped.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a cable coextrusion apparatus according to the present utility model;
fig. 2 is a schematic view of the construction of the die sleeve assembly of the present utility model.
In the drawings, a 1-die sleeve assembly; 2-a die; 3-die sleeve seat; 4-an insulating shield shunt; 5-inserts; 6-a machine head insulation outlet; 7-a co-extruder head; 8-insulating shielding material injection openings; 9-an insulating material injection port; 10-a conductor shielding material injection port.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
As shown in fig. 1, the utility model provides a cable co-extrusion device, which comprises a co-extrusion machine head 7, an insulating shielding shunt 4 and a die sleeve assembly 1;
wherein the co-extrusion machine head 7 is provided with a machine head insulation outlet 6; the insulation shielding shunt 4 is embedded into the co-extruder head 7; the die sleeve assembly 1 is arranged inside the insulating shielding shunt 4 and is attached to the machine head insulating outlet 6.
Specifically, the insulating shield shunt 4 has a stepped shape, and the rear end portion thereof is in contact with one end of the insert 5.
Further, the die sleeve assembly 1 includes: a die 2 and a die sleeve seat 3;
the outer side of the die sleeve seat 3 is in contact with the inner wall of the insulating shielding shunt 4, and the die sleeve seat is integrally positioned in the insulating shielding shunt 4; the upper half part of the die 2 is arranged inside the die sleeve seat 3, and the end part of the die 2 is attached to the machine head insulation outlet 6.
Specifically, the surface of the die 2 does not contain a limit groove connected with the insulating shielding shunt 4, and two sides of the bottom of the die 2 are tightly attached to the insulating shielding shunt 4.
Further, the die sleeve assembly further comprises: an insert 5;
the embedded part 5 is arranged at the bottom line position of the end part of the die 2, and the top end of the embedded part 5 is in contact connection with the machine head insulation wire outlet 6.
Further, the insert 5 is made of brass.
Specifically, the thermal expansion coefficient of brass is higher than that of tungsten steel, the hardness of the brass is lower than that of tungsten steel, and after the co-extrusion machine head 6 is heated to the normal starting temperature, the die 2 can be more attached to the machine head insulation outlet 5, and the insulation outlet of the machine head cannot be damaged.
Further, the diameter of the wire inlet hole at the end part of the die 2 is larger than or equal to the diameter of the insulation wire outlet 6 of the machine head.
Specifically, the diameter of the wire inlet hole at the end part of the die 2 is larger than or equal to the diameter of the machine head insulation wire outlet 6, so that no excessive material flows into the insulation shielding shunt 4 from the die opening and the machine head insulation wire outlet 6 when the insulation material is extruded on the wire.
Further, the cable co-extrusion device also comprises an insulation shielding material injection port 8, an insulation material injection port 9 and a conductor shielding material injection port 10;
wherein, insulating shielding material injecting port 8, insulating material injecting port 9 and conductor shielding material injecting port 10 are respectively positioned at the top of the co-extruder head.
Further, the insulating shielding material injecting port 8 is communicated with an insulating shielding material runner, and the port of the insulating shielding material runner is attached to the embedded part 5.
Specifically, the runner of the insulating shielding material injection port 8 is blocked by the embedded part 5, and the insulating material does not flow into the runner of the insulating shielding material injection port 8 during extrusion, so that the problem that the appearance and the insulating performance of the wire core are affected by wire knots generated on the surface of the extruded wire core by the reflow material is further solved.
The working process of the utility model is as follows:
after the machine is started, when the temperature reaches the target specified temperature, as the material of the embedded part 5 at the bottom of the die 2 is brass, the thermal expansion coefficient is higher than that of tungsten steel, and the hardness is lower than that of tungsten steel, the die 2 can be tightly attached to the insulation wire outlet 6 of the machine head without damaging the machine head; after the insulating material and the conductor shielding material are added, the two materials move towards the direction of the machine head insulating wire outlet 6, and the mold 2 is attached to the insulating shielding shunt 4, and the mold wire inlet hole is attached to the insulating wire outlet, so that the three-layer co-extrusion device is changed into a double-layer co-extrusion device, and meanwhile, due to the factor of close attachment, the insulating material does not flow into the insulating shielding shunt 4 due to pressure problems when the insulating material stops extruding.
Therefore, the utility model provides the cable co-extrusion device, which omits the limit groove for connecting the die with the insulation shielding shunt, so that the wire inlet hole of the die sleeve base can be directly attached to the insulation wire outlet hole, and meanwhile, the diameter of the wire inlet hole of the die sleeve base is larger than or equal to that of the insulation wire outlet hole, thereby ensuring that no redundant material flows into the insulation shielding shunt from the die opening and the insulation wire outlet hole when the insulation material is extruded, and solving the problem that the appearance and the insulation performance of a wire core are influenced by wire knots generated on the surface of the extruded wire core by the reflow material.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (7)
1. A cable coextrusion device comprising:
the co-extrusion machine head is provided with a machine head insulation outlet;
an insulating shielding shunt embedded inside the co-extruder head;
the die sleeve assembly is arranged inside the insulating shielding shunt and is attached to the machine head insulating outlet.
2. The cable coextrusion apparatus according to claim 1, wherein the die sleeve assembly comprises:
the die sleeve seat is positioned in the insulating shielding shunt;
the die is arranged in the die sleeve seat, and the end part of the die is attached to the insulation outlet of the machine head.
3. The cable coextrusion apparatus according to claim 2, wherein the die sleeve assembly further comprises:
the embedded part is arranged at the end part of the die and is in contact connection with the machine head insulation outlet.
4. A cable coextrusion device according to claim 3, wherein the insert is of brass.
5. A cable coextrusion apparatus according to claim 3, wherein the die end entry hole diameter is greater than or equal to the die head insulation outlet diameter.
6. The cable coextrusion device according to claim 1, further comprising an insulation shield fill port, an insulation fill port, and a conductor shield fill port, each located on top of the coextrusion head.
7. The cable coextrusion device according to claim 6, wherein the insulation shield feed port is in communication with an insulation shield feed channel, and wherein the insulation shield feed channel port is positioned to engage the die sleeve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321462173.6U CN220232812U (en) | 2023-06-08 | 2023-06-08 | Cable co-extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321462173.6U CN220232812U (en) | 2023-06-08 | 2023-06-08 | Cable co-extrusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220232812U true CN220232812U (en) | 2023-12-22 |
Family
ID=89197156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321462173.6U Active CN220232812U (en) | 2023-06-08 | 2023-06-08 | Cable co-extrusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220232812U (en) |
-
2023
- 2023-06-08 CN CN202321462173.6U patent/CN220232812U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |