CN202948786U - Specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores - Google Patents
Specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores Download PDFInfo
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- CN202948786U CN202948786U CN 201220598041 CN201220598041U CN202948786U CN 202948786 U CN202948786 U CN 202948786U CN 201220598041 CN201220598041 CN 201220598041 CN 201220598041 U CN201220598041 U CN 201220598041U CN 202948786 U CN202948786 U CN 202948786U
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Abstract
Provided is a specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores. The device comprises a co-extrusion machine head composed of a mould core, a mould core seat tube and a conductor support device. The device adopts the structure that a support mould core is added in a last produced mould core when crosslinking insulation wire cores of adjacent specifications are produced, achieves the effect that shutdown does not happen in production of the produced wire cores of the adjacent specifications, well resolves the problems of material waste, energy waste, work hour waste and manual waste caused by shutdown operation required in specification change of a three layer co-extrusion crosslinking insulation wire core production line.
Description
Technical field
The utility model relates to a kind of cable production equipment, relates in particular to a kind of middle pressure three-layer co-extruded cross-linking insulated wire cores and changes specification and 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 used 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 partly is comprised of 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 control etc.
Three-layer co-extruded cross-linking insulated wire heart yearn adopts extrusion production, and mould is equipped with core rod, core retainer plate, and insulation die sleeve, die sleeve form.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%.Coordinates requirement very high to conductor diameter with the core rod aperture during three-layer co-extruded cross-linking insulated wire heart yearn is produced, the core rod aperture is too small causes the shutdown of conductor snap gauge, and the core rod aperture is excessive, causes conductor to rock in the core rod hole, has a strong impact on the insulation eccentricity degree.According to the large 0.5mm ~ 0.6mm of code requirement core rod aperture ratio conductor diameter.After the large specification insulated wire in one of front has been produced, 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 needs shutdown operation when changing specification.Each shutdown all can cause in cross-linking tube 40～60 m insulated wire cores to scrap, and start also can cause the cable insulation core of many meters of 40～50 m in crosslinked pipeline to scrap again.There are like this material, the energy, man-hour and the serious problem of manpower waste.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art; and a kind of middle pressure three-layer co-extruded cross-linking insulated wire cores that provides is changed specification and is produced not arresting gear; it can solve three-layer co-extruded cross-linking insulated wire cores production line when changing specification, thereby needs the problem of shutdown operation waste material, the energy, man-hour and manpower.
The purpose of this utility model is achieved in that
A kind of middle pressure three-layer co-extruded cross-linking insulated wire cores is changed specification and is produced not arresting gear, comprises co-extruding machine head, and co-extruding machine head is comprised of core rod, core rod seat pipe and conductor support device.
Described conductor support device is comprised of carrying mold cores, stop sleeve.
Described carrying mold cores is two sheet separable types.
Described carrying mold cores one end and stop sleeve be for being threaded, and the other end directly inserts core rod inside, and stop sleeve external diameter and three-layer co-extruding machine head entrance hole form movingly.
Core rod hole on described carrying mold cores and core rod movingly, the size specification actual in conductor in the core rod hole on carrying mold cores amplified 0.5mm～0.6mm left and right.
The utility model has been obtained following technique effect:
When the cross linked insulation core of adjacent-specification was produced, the utility model had adopted the structure that installs a carrying mold cores in the core rod of previous production additional, at first can complete 25～500 mm
2Rule are changed in not stopping between the 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; Secondly only need to adjust different moulds according to actual conditions in the process of adjacent-specification production, easy to use; Reuse this device and can complete simultaneously 6/6 kV and 6/10 kV, 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 size that can also be by controlling the core rod hole on carrying mold cores also makes 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.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of middle pressure three-layer co-extruded cross-linking insulated wire cores is changed specification and is produced not arresting gear as shown in Figure 1, comprises co-extruding machine head, and co-extruding machine head is comprised of core rod 1, core rod seat pipe 2 and conductor support device.Conductor support device is comprised 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 ends and stop sleeve 4 be for being threaded, and the other end directly inserts core rod 1 inside, and stop sleeve 4 external diameters and three-layer co-extruding machine head entrance hole form movingly.Core rod hole on carrying mold cores 3 and core rod 1 movingly, the size specification actual in conductor in the core rod hole on carrying mold cores amplified about 0.5mm～0.6mm.
In the mould apolegamy, when 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 the 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 it is 50 mm that insulator die overlaps the aperture, and outer insulation diameter is more than 40mm, and it is 75 mm that insulator die overlaps the aperture.Cable insulation core outward appearance is better; For insulation screen, the aperture of die sleeve can by insulation screen external diameter-0.5～+ 1.0mm apolegamy, the insulated wire cores outward appearance is better like this.But when adjacent-specification is changed, thereby because the difference of conductor diameter has big difference core rod and conductor actual outside diameter, when 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, the small dimension conductor just can't be fixed in core rod, thereby the bias that causes screen, insulation and outer shielding layer in cable, so the product of producing just can't satisfy standard-required, cause greatly reduce the useful life of cable.So in the specification transfer process, sixty-four dollar question is exactly the position of small dimension conductor in core rod how fixedly, to avoid eccentric situation to occur.
When adopting said structure, during normal boot-strap, stop sleeve can be placed in head, when needs change small dimension with large specification, will install the conductor drum that small dimension has on another pay off rack in large specification production process, and one of the small dimension of preprepared special joint conductor is connected on the small dimension conductor, the external diameter of joint controlled well is not more than the normal external diameter of conductor.When large specification conductor production also is left 20 ~ 30 m, stop unwrapping wire, and continue to produce with the reservation conductor on storage line device, simultaneously will coil rapidly remaining large specification conductor takes off, 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, by normal condition production.When 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 begin to change rule according to speed of production, head length estimation joint.At first extract stop sleeve, after banjo connector enters head, with preheating two sheet carrying mold cores, conductor is combined in core rod hole on carrying mold cores, spiral is in the internal thread hole of stop sleeve termination, then, one holds the stop sleeve other end rotates from the head back and inserts, and carrying mold cores is headed in the hole, fixes because carrying mold cores outer oblique angle equates to accomplish concentric reaching with the core rod inner bevel.So just the small dimension conductor can have been produced normally.Be converted to large specification as long as extract stop sleeve out from small dimension, unload carrying mold cores, insert stop sleeve in head just passable.
Due to this production technology in apolegamy during mould, it is the mould of choosing with the physical dimension of larger specification conductor, so when producing larger specification conductor, the conductor screen layer thickness of insulated wire cores, insulating barrier and insulation shielding layer thickness can just in time reach the product technology requirement, consistent when the screw speed of at this moment producing linear speed and each extruder is produced with common mode, needn't be adjusted.But when 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.At this moment, can be when keeping screw speed constant, suitable speed production linear speed is to regulate the thickness of conductor shield, insulating barrier and insulation screen.Or hauling speed is constant, changes through screw speed, regulates the thickness of conductor shield, insulating barrier and insulation screen.Be noted that simultaneously after the specification conversion, by the data that the thickness measurement online instrument detects, thickness and the degree of eccentricity arrival of adjusting conductor shield, insulating barrier and insulation screen meet the technological requirement level, can increase work efficiency.
It should be noted that: 1. when changing to large specification conductor from the small dimension conductor, should just take off the carrying mold cores of small dimension before large specification conductor enters head, in order to avoid thicker large conductor enters head, be stuck in and cause fault in head.2. each specification conductor connector is wanted firmly and the size of joint will be controlled well, must not be greater than the core rod size, cause 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, in time take off one section 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. when changing carrying mold cores, it is fast that speed is wanted, and carry out in advance every preparation.
Claims (2)
1. press in one kind the three-layer co-extruded cross-linking insulated wire cores to change specification and produce not arresting gear, comprise co-extruding machine head, it is characterized in that: co-extruding machine head is comprised of core rod (1), core rod seat pipe (2) and conductor support device,
Described conductor support device is comprised of carrying mold cores (3), stop sleeve (4),
Described carrying mold cores (3) one ends and stop sleeve (4) be for being threaded, and the other end directly inserts core rod (1) inside, and stop sleeve (4) external diameter and three-layer co-extruding machine head entrance hole form movingly.
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: the core rod hole on described carrying mold cores (3) and core rod (1) movingly, size specification amplification actual in the conductor 0.5mm～0.6mm in the core rod hole on carrying mold cores (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598041 CN202948786U (en) | 2012-11-14 | 2012-11-14 | Specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598041 CN202948786U (en) | 2012-11-14 | 2012-11-14 | Specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores |
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| CN202948786U true CN202948786U (en) | 2013-05-22 |
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| CN 201220598041 Expired - Fee Related CN202948786U (en) | 2012-11-14 | 2012-11-14 | Specification-change non-shutdown device of medium pressure three layer co-extrusion crosslinking insulation wire cores |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381430A (en) * | 2013-07-26 | 2013-11-06 | 浙江长兴威尔鹰电缆科技有限公司 | Cable forming die |
| 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 |
-
2012
- 2012-11-14 CN CN 201220598041 patent/CN202948786U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381430A (en) * | 2013-07-26 | 2013-11-06 | 浙江长兴威尔鹰电缆科技有限公司 | Cable forming die |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20151114 |
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| EXPY | Termination of patent right or utility model |