CN103811132A - Non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device - Google Patents
Non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device Download PDFInfo
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- CN103811132A CN103811132A CN201210454842.5A CN201210454842A CN103811132A CN 103811132 A CN103811132 A CN 103811132A CN 201210454842 A CN201210454842 A CN 201210454842A CN 103811132 A CN103811132 A CN 103811132A
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Abstract
Disclosed is a non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device. The non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device comprises a co-extruding machine head which is composed of a mold core, a mold core seat tube and a conductor support device. During production of crosslinked insulated cable cores of neighboring specifications, the non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device achieve no stop in the production of the neighboring specifications of cable cores by adding a mold core supporting structure inside a mold core for the production of the prior cable core, therefore, the problem of waste of materials, energy sources, working time and manpower due to operation stopping when specification change occurs on a three-layer co-extruded crosslinked insulated cable core production line can be well solved.
Description
Technical field
The present invention relates to a kind of cable production equipment, relate in particular to and in one, press three-layer co-extruded cross-linking insulated wire cores to change specification to produce not arresting gear.
Background technology
Now, the electric and mechanical performance of its excellence of crosslinked polyethylene, has been widely used in the insulating barrier of power cable.The three-layer co-extruded squash type cross linked insulation core production-line technique of the linear employing of middle pressure above insulation.Two kinds of domestic discrete and catenary suspension type continuous vulcanizations, vertical high pressure and the extra-high-tension cable of being mainly used in, catenary suspension type continuous vulcanization is for high pressure and midium voltage cable.Electric and the mechanical performance of its excellence of crosslinked cable, be widely used in power domain, the chief component of middle pressure crosslinking cable production line is made up of parts such as pay off rack, storage line device, traction up and down, extruder, cross-linking tube and the control of dangling, nitrogen and water supply system, take-up and electrical controls.
Three-layer co-extruded cross-linking insulated wire heart yearn adopts extrusion to produce, and mould is equipped with core rod, core retainer plate, insulation die sleeve, die sleeve composition.Middle pressure above insulated wire requires very high to the degree of eccentricity of insulating barrier, middle pressure crosslinked cable internally shields, the bias of insulation and outer shielding layer has strict demand, wherein the insulating barrier degree of eccentricity is not more than 8%, and high pressure and the above cross-linked cable insulating layer degree of eccentricity are not more than 5%.Three-layer co-extruded cross-linking insulated wire heart yearn coordinates requirement very high with core rod aperture to conductor diameter in producing, the too small conductor snap gauge that causes in core rod aperture is shut down, and core rod aperture is excessive, causes conductor to rock in core rod hole, has a strong impact on insulation eccentricity degree.According to the large 0.5mm ~ 0.6mm of code requirement core rod aperture ratio conductor diameter.After a large specification insulated wire has been produced above, need to change out little one grade of specification, core rod aperture ratio conductor diameter goes out greatly 0.5mm ~ 0.6mm, and uncontrollable insulation eccentricity is in prescribed limit.
At present, three-layer co-extruded cross-linking insulated wire cores production line, in the time changing specification, needs shutdown operation.Each shutdown all can cause 40～60 m insulated wire cores in cross-linking tube to scrap, and start also can cause the cable insulation core of many meters of 40～50 m in crosslinked pipeline to scrap again.Exist like this material, the energy, man-hour and manpower to waste serious problem.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art; produce not arresting gear and press three-layer co-extruded cross-linking insulated wire cores to change specification in the one providing; it can solve three-layer co-extruded cross-linking insulated wire cores production line in the time changing specification, thereby needs the problem of shutdown operation waste material, the energy, man-hour and manpower.
The object of the present invention is achieved like this:
In one, press three-layer co-extruded cross-linking insulated wire cores to change specification and produce not arresting gear, comprise co-extruding machine head, co-extruding machine head is made up of core rod, core rod seat pipe and conductor support device.
Described conductor support device is made up of carrying mold cores, stop sleeve.
Described carrying mold cores is two sheet separable types.
Described carrying mold cores one end is with stop sleeve for being threaded, and the other end directly inserts core rod inside, and stop sleeve external diameter forms moving cooperation with three-layer co-extruding machine head entrance hole.
Described carrying mold cores moves and coordinates with the core rod hole on core rod, and the size in carrying mold cores hole is amplified 0.5mm～0.6mm left and right according to the actual specification of conductor.
The present invention has obtained following technique effect:
In the time that the cross linked insulation core of adjacent-specification is produced, the present invention has adopted the structure that installs a carrying mold cores in the core rod of previous production additional, first can complete 25～500 mm
2rule are changed in not stopping between arbitrary neighborhood specification, have reduced the waste of time and the energy on the basis of saving cable core, have effectively improved productivity ratio and have reduced the production expenditure of enterprise; In the process of secondly producing at adjacent-specification, only need to adjust different moulds according to actual conditions, easy to use; Reuse this device and can complete 6/6 kV and 6/10 kV simultaneously, 8.7/10 kV and 8.7/15 kV, rule are changed in not stopping between the arbitrary neighborhood specification of the electric pressures such as 26/35 kV, and the scope of application is wide; Thereby can also be by controlling the size in carrying mold cores hole and making the middle pressure cross-linked cable insulating layer degree of eccentricity be not more than 8% under the Rational Matching of other moulds, high pressure and the above cross-linked cable insulating layer degree of eccentricity are not more than 5%, make the stable and reliable product quality of producing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Embodiment
In one, press as shown in Figure 1 three-layer co-extruded cross-linking insulated wire cores to change specification and produce not arresting gear, comprise co-extruding machine head, co-extruding machine head is made up of core rod 1, core rod seat pipe 2 and conductor support device.Conductor support device is made up of carrying mold cores 3, stop sleeve 4.Carrying mold cores 3 is two sheet separable types, replaceable or removal.Carrying mold cores 3 one end are with stop sleeve 4 for being threaded, and the other end directly inserts core rod 1 inside, and stop sleeve 4 external diameters form moving cooperation with three-layer co-extruding machine head entrance hole.Carrying mold cores 3 moves and coordinates with the core rod hole on core rod 1, and the size in carrying mold cores hole is amplified 0.5mm～0.6mm left and right according to the actual specification of conductor.
In mould apolegamy, while preparing to produce two kinds of adjacent-specification conductors, can select core rod, core retainer plate, insulation die sleeve and die sleeve according to the size of the larger specification conductor that will produce.In process of production, three-layer co-extruded core rod aperture ratio conductor diameter goes out greatly 0.5mm ~ 0.6mm, large 0～0.2 mm of core retainer plate aperture ratio conductor shield external diameter of conductor shield, and core outward appearance is better; Producing the die sleeve aperture size of insulating barrier can match according to outer insulation diameter, and outer insulation diameter is below 40mm, and insulator die cover aperture is 50 mm, and outer insulation diameter is more than 40mm, and insulator die cover aperture is 75 mm.Cable insulation core outward appearance is better; For insulation screen, the aperture of die sleeve can be by insulation screen external diameter-0.5～+ 1.0mm apolegamy, and insulated wire cores outward appearance is better like this.But in the time that adjacent-specification is changed, because thereby making core rod and conductor actual outside diameter, the difference of conductor diameter has big difference, while particularly changing to small dimension from larger specification, the former core rod aperture that extrudes larger specification is just than large 1～3 mm left and right of small dimension conductor diameter, if core rod is interior without supporter, small dimension conductor just cannot be fixed in core rod, thereby cause the bias of screen, insulation and outer shielding layer in cable, so the product of producing just cannot meet standard-required, cause greatly reduce the useful life of cable.So sixty-four dollar question is exactly how to fix the position of small dimension conductor in core rod in specification transfer process, avoid eccentric situation to occur.
While adopting said structure, when normal boot-strap, stop sleeve can be placed in head, in the time that needs change small dimension with large specification, in large specification production process, will on another pay off rack, install the conductor drum that small dimension has, and one of the small dimension of preprepared special joint conductor is connected on small dimension conductor, the external diameter of joint controlled well is not more than the normal external diameter of conductor.In the time that large specification conductor production is also left 20 ~ 30 m, stop unwrapping wire, and continue to produce with the reserved conductor on storage line device, rapidly upper dish remaining large specification conductor is taken off simultaneously, and the other end of the large specification of the termination of conductor and special joint conductor is connected, the joint external diameter of then having polished, and restart pay off rack, open the conductor chuck on storage line device, produce by normal condition.In the time that arriving extrusion head soon, the connector of large specification and small dimension should suitably slow down speed of production; Arrive the position of head, and start to change rule according to speed of production, head length estimation joint.First extract stop sleeve, when banjo connector enters after head, conductor is combined in carrying mold cores hole with preheating two sheet carrying mold cores, spiral is in the internal thread hole of stop sleeve termination, then, one holds stop sleeve other end rotates insertion after head, and carrying mold cores is headed in hole, because the outer oblique angle of carrying mold cores equates to accomplish concentric and fixing with core rod inner bevel.So just small dimension conductor can normally be produced.Be converted to large specification as long as extract stop sleeve out from small dimension, unload carrying mold cores, stop sleeve is inserted in head just passable.
Because this production technology is in the time matching mould, it is the mould of choosing with the physical dimension of larger specification conductor, so in the time producing larger specification conductor, conductor screen layer thickness, insulating barrier and the insulation shielding layer thickness of insulated wire cores can just in time reach product technology requirement, at this moment consistent when the screw speed of producing linear speed and each extruder is produced with common mode, needn't be adjusted.But while changing to adjacent small dimension conductor from larger specification conductor, because the external diameter of conductor is less than the aperture of actual core rod, so by normal screw speed and production linear speed, conductor shield, insulating barrier and insulation shielding layer thickness all can be slightly larger than nominal value.Now, can be in keeping screw speed constant, suitably speed production linear speed, to regulate the thickness of conductor shield, insulating barrier and insulation screen.Or hauling speed is constant, change through screw speed, regulate the thickness of conductor shield, insulating barrier and insulation screen.Be noted that after specification conversion simultaneously, the data that detect by thickness measurement online instrument, thickness and the degree of eccentricity arrival of adjusting conductor shield, insulating barrier and insulation screen meet technological requirement level, can increase work efficiency.
It should be noted that: 1. in the time changing to large specification conductor from small dimension conductor, should before large specification conductor enters head, just the carrying mold cores of small dimension be taken off, in order to avoid thicker large conductor enters head, be stuck in and in head, cause fault.2. each specification conductor connector is wanted firmly and the size of joint will be controlled well, must not be greater than core rod size, causes fault in case be stuck in core rod.The bonding conductor that 3 blank areas are used is conductors dedicated, after more rule are produced each time, take off in time one section of core of conductors dedicated, and its insulating barrier of dismantling, and the foreign material of removing on conductor use in order to next.4. each start should fill large specification mould, is convenient to exchange.5., while changing carrying mold cores, it is fast that speed is wanted, and carry out in advance every preparation.
Claims (5)
1. in, press three-layer co-extruded cross-linking insulated wire cores to change specification and produce a not arresting gear, comprise co-extruding machine head, it is characterized in that: co-extruding machine head is made up of core rod (1), core rod seat pipe (2) and conductor support device.
2. middle pressure three-layer co-extruded cross-linking insulated wire cores according to claim 1 is changed specification and is produced not arresting gear, it is characterized in that: described conductor support device is made up of carrying mold cores (3), stop sleeve (4).
3. middle pressure three-layer co-extruded cross-linking insulated wire cores according to claim 2 is changed specification and is produced not arresting gear, it is characterized in that: described carrying mold cores (3) is two sheet separable types.
4. change specification according to the middle pressure three-layer co-extruded cross-linking insulated wire cores described in claim 2 or 3 and produce not arresting gear; it is characterized in that: described carrying mold cores (3) one end with stop sleeve (4) for being threaded; the other end directly inserts core rod (1) inside, and stop sleeve (4) external diameter forms moving cooperation with three-layer co-extruding machine head entrance hole.
5. middle pressure three-layer co-extruded cross-linking insulated wire cores according to claim 4 is changed specification and is produced not arresting gear; it is characterized in that: described carrying mold cores (3) moves and coordinates with the core rod hole on core rod (1), the size in carrying mold cores hole is amplified 0.5mm～0.6mm left and right according to the actual specification of conductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210454842.5A CN103811132A (en) | 2012-11-14 | 2012-11-14 | Non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210454842.5A CN103811132A (en) | 2012-11-14 | 2012-11-14 | Non-stop specification-variable medium-voltage three-layer co-extruded crosslinked insulated cable core production device |
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| CN103811132A true CN103811132A (en) | 2014-05-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185476A (en) * | 2015-08-31 | 2015-12-23 | 广东吉青电缆实业有限公司 | Quick mold change device for crosslinked cable production line |
| CN113421719A (en) * | 2021-06-23 | 2021-09-21 | 四川新蓉电缆有限责任公司 | Three-layer co-extrusion continuous extrusion production sleeve die device and method for medium-voltage cable |
| CN114388192A (en) * | 2020-10-22 | 2022-04-22 | 昆明电缆集团昆电工电缆有限公司 | High-quality medium-voltage crosslinked cable insulation core and preparation method thereof |
| CN115440445A (en) * | 2022-09-27 | 2022-12-06 | 广州岭南电缆股份有限公司 | Anti-sinking extrusion molding process for medium-voltage crosslinked cable |
-
2012
- 2012-11-14 CN CN201210454842.5A patent/CN103811132A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185476A (en) * | 2015-08-31 | 2015-12-23 | 广东吉青电缆实业有限公司 | Quick mold change device for crosslinked cable production line |
| CN114388192A (en) * | 2020-10-22 | 2022-04-22 | 昆明电缆集团昆电工电缆有限公司 | High-quality medium-voltage crosslinked cable insulation core and preparation method thereof |
| CN114388192B (en) * | 2020-10-22 | 2023-12-15 | 昆明电缆集团昆电工电缆有限公司 | High-quality medium-voltage crosslinked cable insulation wire core and preparation method thereof |
| CN113421719A (en) * | 2021-06-23 | 2021-09-21 | 四川新蓉电缆有限责任公司 | Three-layer co-extrusion continuous extrusion production sleeve die device and method for medium-voltage cable |
| CN115440445A (en) * | 2022-09-27 | 2022-12-06 | 广州岭南电缆股份有限公司 | Anti-sinking extrusion molding process for medium-voltage crosslinked cable |
| CN115440445B (en) * | 2022-09-27 | 2023-04-28 | 广州岭南电缆股份有限公司 | Anti-sinking extrusion molding process for medium-voltage crosslinked cable |
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Application publication date: 20140521 |