CN210039761U - Production equipment for medium-voltage cable - Google Patents
Production equipment for medium-voltage cable Download PDFInfo
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- CN210039761U CN210039761U CN201920566812.0U CN201920566812U CN210039761U CN 210039761 U CN210039761 U CN 210039761U CN 201920566812 U CN201920566812 U CN 201920566812U CN 210039761 U CN210039761 U CN 210039761U
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- inner sheath
- outer sheath
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- air drying
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Abstract
The utility model discloses a production facility for medium voltage cable, wherein the front part of an inner sheath extrusion molding die body is provided with an inner sheath extrusion molding hot air drying device, and the rear part of the inner sheath extrusion molding hot air drying device is provided with an inner sheath layer feeding pipe; an inner sheath core mould is arranged at the center of the inner sheath feeding pipe and the inner sheath extrusion hot air drying device; the utility model can preheat and dry the jacket before extrusion molding, thereby effectively preventing air holes from generating; the drying and feeding uniform distribution cooling links are mutually matched, so that the heat energy is efficiently utilized, and the condition that one side is unevenly heated during extrusion molding is avoided; and meanwhile, the cable subjected to inner sheath extrusion molding is subjected to quick oil cooling, and the steel belt armor is attached and sealed.
Description
Technical Field
The utility model belongs to the technical field of the cable processing, specifically be a production facility for medium voltage cable.
Background
The electric wire and cable is a kind of electrical wire products for transmitting electric power, transferring information and realizing electromagnetic energy conversion. The main structure of the wire and cable comprises a conductor, an insulation layer and a protective layer; the specific protective layer is divided into an inner protective layer, an armor layer, an outer protective layer and other different protective layers according to the working environment requirements of the electric wires and the electric cables.
The production of the electric wire and the electric cable is a product produced by adopting a layer-by-layer coating manufacturing method, and the inner layer is coated, so that the inspection and the exchange are difficult; therefore, the processing must be finished according to the structural sequence of the product in the process, and the quality of the material is further ensured by optimizing processing equipment and structure; in the step of the sheath, the common processing sequence is 'inner sheath-armor-outer sheath' from inside to outside.
The plastic sheathing of the cable is carried out by means of continuous extrusion. The extrusion apparatus is a single screw extruder. The extrusion process is the same as insulation extrusion; and in the course of working of cable sheath, there is the fixed and setting condition in one end of reinforced direction to lead to the mandrel to be heated unevenly, the overheated size inequality and the condition such as crackle that leads to appear in sheath one side behind the cable conductor shaping, preheat to the cable sheath extrusion molding before in addition and dry and also be a big blank field of present cable processing.
The armor processing is that steel belts or steel wires are spirally twisted and wrapped on the inner cushion layer of the cabled cable; the armor has the main functions of protecting the cable mechanically, chemically, rat and termite resistant and the like so as to ensure the safe operation and long service life of the cable.
However, in the current cable armoring field, the following problems exist; firstly, the anterior segment processing link of armor realizes the cooling through water-cooling, and such cooling mode has led to the production line very long and area is big, and in order to guarantee that the outer adnexed moisture of cable does not contact and produce the corruption to armor steel wire steel band, consequently still need the middle stoving link that adds still, and is very troublesome and improved manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problems, and provides a production device for medium voltage cables, which can preheat and dry the sheath before extrusion molding, thereby effectively preventing air holes; the drying and feeding uniform distribution cooling links are mutually matched, so that the heat energy is efficiently utilized, and the condition that one side is unevenly heated during extrusion molding is avoided; and meanwhile, the cable subjected to inner sheath extrusion molding is subjected to quick oil cooling, and the steel belt armor is attached and sealed.
In order to realize the above purpose, the utility model adopts the technical scheme that: a production device for medium voltage cables comprises a wire inlet and a wire outlet which are respectively arranged at the front end and the rear end; an inner sheath extrusion molding hot air drying device is arranged at the front part of the inner sheath extrusion molding die body, and an inner sheath layer feeding pipe is arranged behind the inner sheath extrusion molding hot air drying device; an inner sheath core mould is arranged at the center of the inner sheath layer feeding pipe and the inner sheath extrusion hot air drying device; a cable penetrates through the inner sheath core mold; an inner sheath extrusion die is arranged at the front end of the inner sheath core die; the rear part of the inner sheath extrusion molding die body is provided with an outer sheath extrusion molding die body, the front part of the outer sheath extrusion molding die body is provided with an outer sheath extrusion hot air drying device, and an outer sheath layer feeding pipe is arranged in front of the outer sheath extrusion hot air drying device; the outer sheath core mould is arranged in the center of the outer sheath layer feeding pipe and the outer sheath extrusion hot air drying device; the front part of the outer sheath core mould is provided with an insulating layer core mould; a cable penetrates through the centers of the outer sheath core mold and the insulating layer core mold; the insulating layer feeding pipe is arranged on the outer side of the insulating layer core mold; the front end of the insulating layer core mold is provided with an outer sheath extrusion mold, and an insulating layer plastic area is arranged between the outer sheath extrusion mold and the insulating layer core mold.
Further, an air outlet is arranged in the inner sheath extrusion molding hot air drying device, and an inner sheath preheating and drying opening is arranged at the position of the inner sheath mandrel corresponding to the inner sheath mandrel; and a second air outlet is formed in the outer sheath extrusion hot air drying device, and an outer sheath preheating and drying opening is formed in the outer sheath core mold and the position corresponding to the outer sheath core mold.
Further, a heat conducting layer is arranged between the inner sheath extrusion hot air drying device and the inner sheath layer feeding pipe; and a second heat conduction layer is arranged between the outer sheath extrusion hot air drying device and the inner sheath layer feeding pipe.
Furthermore, a cooling device is arranged between the inner sheath extrusion molding die body and the outer sheath extrusion molding die body, an oil inlet is formed in the front end of the cooling device, and an annular cylindrical oil distribution cylinder is communicated inwards with the oil inlet; the cooling device is provided with a cooling cavity between the oil distributing cylinder and the cable; the cooling cavity is provided with an oil outlet at the tail end of the cooling device; the rear part of the cooling device is provided with a rotating base, and a steel belt wheel disc and a plurality of guide wheels are fixedly arranged on the rotating base.
Furthermore, through holes are uniformly arranged between the oil distribution cylinder and the cooling cavity at intervals.
Furthermore, the steel belt on the steel belt wheel disc is wound on the cable wire after passing through the two guide wheels.
The utility model has the advantages that:
1. the utility model can rapidly cool the cable which is just processed by inner sheath plastic extrusion, and has better lubricating and sealing waterproof effects for the subsequent steel strip steel wire armoring processing through the oil layer attached to the outer layer of the cable; the method is beneficial to the connection time before and after the armor processing link, thereby further improving the processing efficiency.
2. The utility model attaches the inner/outer sheath extrusion hot air drying device and the inner/outer sheath layer feeding pipe together by arranging the heat conduction layer/two, and can effectively utilize the heat of the material to generate hot air while the material is uniformly distributed in the feeding pipe; meanwhile, the generated hot air can be blown to the opposite direction of the shaping area of the inner/outer sheath layer by the hot air with water vapor after drying due to the angle of the air outlet, so that the generation of air holes during extrusion molding is avoided.
3. The utility model discloses the cable core will be dried, the possibility of gas pocket appears in the effect messenger sheath because moisture (or around the moisture of covering bed course) is prevented. Preheating and drying can also prevent residual internal pressure effect of the plastic in extrusion due to quenching. In the process of extruding the plastic materials, the preheating can eliminate the great temperature difference formed when a cold wire enters a high-temperature machine head and contacts with the plastic at the die orifice, so that the fluctuation of extrusion pressure caused by the fluctuation of the temperature of the plastic is avoided, the extrusion amount is stabilized, and the extrusion quality is ensured.
Drawings
Fig. 1 is a schematic view of the internal structure of the device of the present invention.
Figure 2 is the utility model discloses the structure schematic diagram of inner sheath extrusion molding link of device.
Fig. 3 is the structure schematic diagram of the oil cooling and armoring processing link of the device of the utility model.
Figure 4 is the utility model discloses the structure sketch map of insulating oversheath extrusion molding link of device.
Fig. 5 is a schematic diagram of a wire frame of the oil cooling circulation relationship of the present invention.
In the figure: 1. an inner sheath extrusion molding die body; 2. an inner sheath extrusion hot air drying device; 3. an inner sheath mandrel; 4. an inner jacket layer feed pipe; 5. a heat conductive layer; 6. an inner jacket layer plastic zone; 7. an inner sheath extrusion die; 8. preheating a drying port by the inner sheath; 9. a wire inlet; 10. an outlet; 11. a cooling device; 12. an oil inlet; 13. an oil distributing cylinder; 14. a through hole; 15. a cooling chamber; 16. an oil outlet; 17. a guide wheel; 18. a steel belt; 19. a steel belt wheel disc; 20. rotating the base; 21. an outer sheath extrusion molding die body; 22. an outer sheath extrusion hot air drying device; 23. an outer sheath core mold; 24. a feeding pipe for the outer sheath layer; 25. a second heat conduction layer; 26. an outer jacket layer plastic zone; 27. an outer sheath extrusion die; 28. the outer sheath preheats the drying port; 29. an insulating layer feed pipe; 30. an insulating layer plastic region; 31. an insulating layer core mold; 32. a conical surface; 33. a cable wire; 201. an air outlet; 2201. and a second air outlet.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
As shown in fig. 1-5, the specific structure of the present invention is: a production facility for medium voltage cable, it includes the inlet 9 and outlet 10 that the front and back both ends set up separately; an inner sheath extrusion molding hot air drying device 2 is arranged at the front part of the inner sheath extrusion molding die body 1, and an inner sheath layer feeding pipe 4 is arranged behind the inner sheath extrusion molding hot air drying device 2; an inner sheath core die 3 is arranged at the center of the inner sheath layer feeding pipe 4 and the inner sheath extrusion hot air drying device 2; a cable 33 penetrates through the inner sheath core mold 3; the front end of the inner sheath core mould 3 is provided with an inner sheath extrusion mould 7; an outer sheath extrusion molding die body 21 is arranged at the rear part of the inner sheath extrusion molding die body 1, an outer sheath extrusion hot air drying device 22 is arranged at the front part of the outer sheath extrusion molding die body 21, and an outer sheath layer feeding pipe 24 is arranged in front of the outer sheath extrusion hot air drying device 22; an outer sheath core mould 23 is arranged in the center of the outer sheath layer feeding pipe 24 and the outer sheath extrusion hot air drying device 22; the front part of the outer sheath core mould 23 is provided with an insulating layer core mould 31; a cable 33 passes through the centers of the outer sheath core mold 23 and the insulating layer core mold 31; the insulating layer feeding pipe 29 is arranged outside the insulating layer core mould 31; the front end of the insulating layer core mould 31 is provided with an outer sheath extrusion mould 27, and an insulating layer plastic zone 30 is arranged between the outer sheath extrusion mould and the insulating layer core mould.
Preferably, an air outlet 201 is arranged in the inner sheath extrusion hot air drying device 2, and an inner sheath preheating and drying opening 8 is arranged at the position of the inner sheath core mold 3 corresponding to the inner sheath core mold; and a second air outlet 2201 is formed in the outer sheath extrusion hot air drying device 22, and an outer sheath preheating and drying opening 28 is formed in the outer sheath core mould 23 and the position corresponding to the outer sheath core mould.
Preferably, a heat conduction layer 5 is arranged between the inner sheath extrusion hot air drying device 2 and the inner sheath layer feeding pipe 4; and a second heat conduction layer 25 is arranged between the outer sheath extrusion hot air drying device 22 and the outer sheath layer feeding pipe 24.
Preferably, a cooling device 11 is arranged between the inner sheath extrusion molding die body 1 and the outer sheath extrusion molding die body 21, an oil inlet 12 is formed in the front end of the cooling device 11, and an annular cylindrical oil distribution cylinder 13 is communicated inwards from the oil inlet 12; the cooling device 11 is provided with a cooling cavity 15 between the oil distribution cylinder 13 and the cable 33; an oil outlet 16 is communicated with the tail end of the cooling cavity 15 at the cooling device 11; a rotary base 20 is arranged at the rear part of the cooling device 11, and a steel belt wheel disc 19 and at least one guide wheel 17 are fixedly arranged on the rotary base 20.
Preferably, through holes 14 are arranged between the oil distribution cylinder 13 and the cooling cavity 15 at uniform intervals.
Preferably, the steel belt 18 on the steel belt wheel 19 passes through the two guide wheels 17 and then is wound on the cable 33.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (6)
1. A production device for medium voltage cables comprises a wire inlet (9) and a wire outlet (10) which are respectively arranged at the front end and the rear end; the device is characterized in that an inner sheath extrusion hot air drying device (2) is arranged at the front part of an inner sheath extrusion molding die body (1), and an inner sheath layer feeding pipe (4) is arranged behind the inner sheath extrusion hot air drying device (2); an inner sheath core die (3) is arranged at the center of the inner sheath layer feeding pipe (4) and the inner sheath extrusion hot air drying device (2); a cable (33) penetrates through the inner sheath core mold (3); an inner sheath extrusion die (7) is arranged at the front end of the inner sheath core die (3); an outer sheath extrusion molding die body (21) is arranged at the rear part of the inner sheath extrusion molding die body (1), an outer sheath extrusion hot air drying device (22) is arranged at the front part of the outer sheath extrusion molding die body (21), and an outer sheath layer feeding pipe (24) is arranged in front of the outer sheath extrusion hot air drying device (22); an outer sheath core mould (23) is arranged in the center of the outer sheath layer feeding pipe (24) and the outer sheath extrusion hot air drying device (22); an insulating layer core mould (31) is arranged at the front part of the outer sheath core mould (23); a cable (33) penetrates through the centers of the outer sheath core mold (23) and the insulating layer core mold (31); the insulating layer feeding pipe (29) is arranged on the outer side of the insulating layer core mould (31); an outer sheath extrusion die (27) is arranged at the front end of the insulating layer core die (31), and an insulating layer plastic area (30) is arranged between the outer sheath extrusion die and the insulating layer core die.
2. The production equipment for the medium voltage cable according to claim 1, wherein an air outlet (201) is arranged in the inner sheath extrusion hot air drying device (2), and an inner sheath preheating drying opening (8) is arranged at the position of the inner sheath mandrel (3) corresponding to the inner sheath mandrel; and a second air outlet (2201) is formed in the outer sheath extrusion hot air drying device (22), and an outer sheath preheating and drying opening (28) is formed in the outer sheath core mold (23) and in the position corresponding to the outer sheath core mold.
3. A production plant for medium voltage cables according to claim 2, characterized in that between the inner sheath extrusion hot air drying device (2) and the inner sheath layer feeding pipe (4) is arranged a heat conducting layer (5); and a second heat conducting layer (25) is arranged between the outer sheath extrusion hot air drying device (22) and the outer sheath layer feeding pipe (24).
4. The production equipment for the medium voltage cable according to claim 1, wherein a cooling device (11) is arranged between the inner sheath extrusion molding die body (1) and the outer sheath extrusion molding die body (21), an oil inlet (12) is formed in the front end of the cooling device (11), and an oil distribution cylinder (13) in a circular cylindrical shape is communicated with the oil inlet (12) inwards; the cooling device (11) is provided with a cooling cavity (15) between the oil distributing cylinder (13) and the cable (33); an oil outlet (16) is communicated with the tail end of the cooling cavity (15) at the cooling device (11); the rear part of the cooling device (11) is provided with a rotating base (20), and a steel belt wheel disc (19) and at least one guide wheel (17) are fixedly arranged on the rotating base (20).
5. A production plant for medium voltage cables as claimed in claim 4, characterized in that through holes (14) are provided at regular intervals between the oiling cylinder (13) and the cooling chamber (15).
6. A production plant for medium voltage cables as claimed in claim 4, characterized in that the steel band (18) on the steel band wheel disc (19) is wound on the cable line (33) after passing through the two guide wheels (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566812.0U CN210039761U (en) | 2019-04-24 | 2019-04-24 | Production equipment for medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566812.0U CN210039761U (en) | 2019-04-24 | 2019-04-24 | Production equipment for medium-voltage cable |
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| Publication Number | Publication Date |
|---|---|
| CN210039761U true CN210039761U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920566812.0U Active CN210039761U (en) | 2019-04-24 | 2019-04-24 | Production equipment for medium-voltage cable |
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| Country | Link |
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| CN (1) | CN210039761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927287A (en) * | 2022-06-01 | 2022-08-19 | 广东南缆电缆有限公司 | Preparation method of towline cable |
-
2019
- 2019-04-24 CN CN201920566812.0U patent/CN210039761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927287A (en) * | 2022-06-01 | 2022-08-19 | 广东南缆电缆有限公司 | Preparation method of towline cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of production equipment for medium voltage cable Effective date of registration: 20201223 Granted publication date: 20200207 Pledgee: China Co. truction Bank Corp Huaihua branch Pledgor: CRANE GROUP OF HUNAN CABLE TECHNOLOGY Co.,Ltd. Registration number: Y2020980009860 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |