CN104875354B - Sheath of hv cable expressing technique, anti-glued die device and blow-dry device - Google Patents
Sheath of hv cable expressing technique, anti-glued die device and blow-dry device Download PDFInfo
- Publication number
- CN104875354B CN104875354B CN201510200783.2A CN201510200783A CN104875354B CN 104875354 B CN104875354 B CN 104875354B CN 201510200783 A CN201510200783 A CN 201510200783A CN 104875354 B CN104875354 B CN 104875354B
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- Prior art keywords
- inner cylinder
- blow
- cable conductor
- dry device
- asphalt caulk
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2883—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of preformed parts, e.g. inserts fed and transported generally uninfluenced through the extruder or inserts fed directly to the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of sheath of hv cable expressing technique and device, technique to comprise the following steps：A, the unnecessary asphalt caulk that will be attached to cable conductor surface is blown away；B, cable conductor is penetrated into the extrusion mandrel in extruder head；C, by extruding machine by sheath extrusion moulding to cable conductor surface.The unnecessary asphalt caulk on cable conductor surface is dried up before extrusion molding, prevents the reduction of extrusion mandrel temperature in extrusion process, ensure that non metallic sheath normally extrudes, so as to substantially increase the quality of non metallic sheath by the present invention.
Description
Technical field
The present invention is more particularly directed to a kind of sheath of hv cable expressing technique and its device.
Background technology
High-tension cable cable core is one kind of electric-cable core, the major trunk roads for being applied to power transmission more.High-tension cable cable
The part of core from inside to outside mainly includes：Conductor, insulating barrier, sheath and outer jacket.Using aluminium set as sheath,
Non metallic sheath need to apply one layer of anti-corrosion as when in the high-tension cable cable core structure of outer jacket, producing outer jacket on aluminium set surface
Layer, after preventing from damaging because of outer jacket in cable conductor running, outer bound pair aluminium set causes to corrode.When the anticorrosive coat in aluminium set
During using asphalt-coating paint, it is dropped in entering the thick also a small amount of asphalt caulk of extruder head on extrusion mandrel, due to extrusion molding mould
, the only about 1-2 ㎜ very thin into line part of core, and its material is steel, good heat conduction effect, if there have a small amount of asphalt caulk to be dropped in be crowded
Mold in-core surface is to make the temperature decrease of extrusion mandrel.Simultaneously during extrusion molding, in inevitable cable conductor and extrusion mandrel
Wall contacts (pasting mould), because aluminium set temperature is identical with environment temperature before entering extruder head, the non metallic sheath with extrusion
About 150 DEG C of difference, and aluminium is the good conductor of heat, and after aluminium set contacts with extrusion mandrel inwall, the heat of extrusion mandrel passes rapidly
Lead to aluminium, extrusion mandrel temperature is reduced rapidly, cause core temperature rapid drawdown.And the dip non metallic sheath of core temperature
Extrusion, causes " cold glue ", causes non metallic sheath to pull through.
Therefore those skilled in the art, which are directed to developing a kind of sheath of hv cable that will not reduce extrusion mandrel temperature, squeezes
Go out technique and its device.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention be to provide one kind will not reduce it is crowded
Mould the sheath of hv cable expressing technique and its device of core temperature.
To achieve the above object, the invention provides a kind of sheath of hv cable expressing technique, comprise the following steps：
A, the unnecessary asphalt caulk that will be attached to cable conductor surface is blown away；
B, cable conductor is penetrated into the extrusion mandrel in extruder head；
C, by extruding machine by sheath extrusion moulding to cable conductor surface.
Using the non metallic sheath of above-mentioned technique processing high-tension cable, enter extrusion molding in the cable conductor of asphalt-coating paint
Before machine head, the unnecessary asphalt caulk that first will be attached in aluminium set is blown off, is blown the cable conductor after pitch off and is entered back into extruding machine
In head, pitch is dripped on extrusion mandrel after avoiding enter into extruder head, makes extrusion mandrel temperature decrease.
Preferably, cable conductor is penetrated into asphalt caulk blow-dry device in step a, asphalt caulk blow-dry device be outer barrel and
Inner cylinder sleeve structure, it is closing space between outer barrel and inner cylinder, air inlet is offered on outer barrel barrel, from air inlet toward pitch
Compressed air is passed through in paint blow-dry device；Inner cylinder includes straight section inner cylinder and taper inner cylinder, and one end of straight section inner cylinder is blown for asphalt caulk
The cable conductor import of equipment for drying, the other end are connected with the bigger diameter end of taper inner cylinder, and the miner diameter end of taper inner cylinder blows for asphalt caulk
The cable conductor outlet of equipment for drying, and it is provided with air outlet on the barrel of taper inner cylinder.Asphalt caulk is dried up using the above method,
Compressed air is introduced into the closing space between outer barrel and inner cylinder, then passes through air outlet.Because air outlet is set
On the barrel of taper inner cylinder so that the wind direction of air outlet is towards the import direction of cable conductor so that the asphalt caulk blown off is not
Cable conductor surface can be adhered to again.
Preferably, be provided with inner mould core in extrusion mandrel, leave gap between extrusion mandrel and inner mould core, extrusion mandrel and
Inner mould core is tubular structure, and the endoporus of extrusion mandrel includes bellmouth and straight hole, and the bigger diameter end of bellmouth enters for cable conductor
Mouth end, the miner diameter end of bellmouth are connected with straight hole；Inner mould core includes conically shaped and straight tube, and the bigger diameter end of conically shaped is stuck in bellmouth
Surface, the miner diameter end of conically shaped are connected with straight tube, and straight tube is extend into straight hole, and the termination of straight tube is stretched out outside extrusion mandrel, and directly
Projection is provided with the outer wall of cylinder.Using the extrusion mandrel and inner mould core of said structure, it is stuck in by the conically shaped of inner mould core crowded
The countersunk surface of mold core, to be positioned to inner mould core, due to only existing ends contact, the contact area of the two is enough small.
And the bellmouth inner mould core of extrusion mandrel is stretched out outside extrusion mandrel, it ensure that asphalt caulk can not possibly be dropped on extrusion mandrel.Meanwhile
The projection set on the outer wall of straight tube, even if ensure that cable conductor drives inner mould core to swing, also simply the top of projection is determined
In extrusion mandrel inwall, the two will not direct bump contact, it is therefore prevented that the generation of " pad pasting " situation.
Present invention also offers a kind of extruding machine anti-glued die device, including extrusion mandrel, extrusion mandrel is tubular structure,
Inner mould core is provided with extrusion mandrel, inner mould core is tubular structure, and gap is left between inner mould core and extrusion mandrel.Asphalt caulk drips
After inner mould core inner surface, due to leaving gap between inner mould core and extrusion mandrel so that contact surface is small between the two, therebetween
Medium be mainly air, although cause inner mould core temperature to decrease, but not influence extrusion mandrel temperature.
Preferably, the endoporus of extrusion mandrel includes bellmouth and straight hole, the bigger diameter end of bellmouth is cable conductor entrance point,
The miner diameter end of bellmouth is connected with straight hole；
Inner mould core includes conically shaped and straight tube, and the bigger diameter end of conically shaped is stuck in countersunk surface, the miner diameter end of conically shaped with
Straight tube is connected, and straight tube is extend into straight hole, and the termination of straight tube is stretched out outside extrusion mandrel.By conically shaped be stuck in bellmouth come pair
Inner mould core is positioned.
Preferably, it is provided with projection on the outer wall of straight tube.Even if ensure that cable conductor drives inner mould core to swing, also it is
The top of projection is scheduled on extrusion mandrel inwall, and the two will not direct bump contact, it is therefore prevented that the generation of " pad pasting " situation.
Present invention also offers a kind of asphalt caulk blow-dry device, asphalt caulk blow-dry device is used to blow away to be attached to cable conductor
The unnecessary asphalt caulk on surface, asphalt caulk blow-dry device are tubular structure, and air inlet is offered on barrel.
Preferably, asphalt caulk blow-dry device is the double tubular structure that outer barrel and inner cylinder are set with, it is between outer barrel and inner cylinder
Closing space, air inlet are opened on outer barrel barrel；
The both ends open of inner cylinder, inner cylinder include straight section inner cylinder and taper inner cylinder, and one end of straight section inner cylinder dries up for asphalt caulk
The cable conductor import of device, the other end are connected with the bigger diameter end of taper inner cylinder, and the miner diameter end of taper inner cylinder dries up for asphalt caulk
The cable conductor outlet of device, air outlet is offered on the barrel of taper inner cylinder.
Preferably, the outer barrel and inner cylinder of asphalt caulk blow-dry device form by two and half docking, and it is outer by being arranged on
The hinge of cylinder side is hinged.
The beneficial effects of the invention are as follows：The present invention is using asphalt caulk blow-dry device and extruding machine anti-glued die device come common anti-
Only in extrusion process extrusion mandrel temperature reduction, ensure that non metallic sheath normally extrudes, it is nonmetallic so as to substantially increase
The quality of sheath.
Brief description of the drawings
Fig. 1 is the structural representation of asphalt caulk blow-dry device in the present invention.
Fig. 2 is the structural representation of extruding machine anti-glued die device in the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in Figure 1 and Figure 2, a kind of sheath of hv cable expressing technique, comprises the following steps：
A, cable conductor 1 is put into asphalt caulk blow-dry device, asphalt caulk blow-dry device is that outer barrel 6 and inner cylinder 7 are set with
Structure, it is that closing space, outer barrel 6 and inner cylinder 7 form by two and half docking between outer barrel 6 and inner cylinder 7, and by being arranged on
The hinge of the side of outer barrel 6 is hinged.
Offer air inlet 6a on the barrel of outer barrel 6, asphalt caulk blow-dry device by the regulating valve 8 that is connected on air inlet 6a with
Air compressor machine is connected；Inner cylinder 7 includes straight section inner cylinder 7a and taper inner cylinder 7b, and straight section inner cylinder 7a one end is asphalt caulk blow-dry device
Cable conductor import, the other end are connected with taper inner cylinder 7b bigger diameter end, and taper inner cylinder 7b miner diameter end is asphalt caulk drying dress
The cable conductor outlet put, and be provided with air outlet 7c on taper inner cylinder 6b barrel and dress is dried up toward asphalt caulk by air compressor machine
Put interior air-supply；
Compressed air is blown out from air outlet 7c, and the unnecessary asphalt caulk that will be attached to the surface of cable conductor 1 is blown off, then cable
Cable core 1 pulls out from the port of export of asphalt caulk blow-dry device.
B, cable conductor 1 is put into the extruding machine anti-glued die device set in extruder head 2, extruding machine anti-glued mould
Device includes extrusion mandrel 3, and extrusion mandrel 3 is tubular structure, and the endoporus of extrusion mandrel 3 includes bellmouth 3a and straight hole 3b, cone
Shape hole 3a bigger diameter end is cable conductor entrance point, and bellmouth 3a miner diameter end is connected with straight hole 3b；Set in extrusion mandrel 3
There is inner mould core 4, inner mould core 4 is tubular structure, and inner mould core 4 includes conically shaped 4a and straight tube 4b, and conically shaped 4a bigger diameter end is stuck in
Bellmouth 3a surfaces, conically shaped 4a miner diameter end are connected with straight tube 4b, and straight tube 4b is extend into straight hole 3b, and straight tube 4b termination is stretched
Go out outside extrusion mandrel 3, projection 5 is provided with straight tube 4b outer wall, and gap is left between straight tube 4b and straight hole 3b.
C, by extruding machine by sheath extrusion moulding to the surface of cable conductor 1.
Operation principle is as follows：
Before the cable conductor 1 of asphalt-coating paint enters extruder head 2, first by the upper half cylinder of asphalt caulk blow-dry device
Open, upper half cylinder is closed after after cable conductor 1, starts air compressor machine, compressed air enters the He of outer barrel 6 by regulating valve 8
In closing space between interior 7, the then import direction air-out by air outlet 7c towards cable conductor 1.Blow more heeltaps off
Cable conductor 1 after green grass or young crops paint enters in extruder head 2, if still there is residual bitumen paint to be dropped in the inner surface of inner mould core 4, due to
Gap is left between inner mould core 4 and extrusion mandrel 3 so that contact surface is small between the two, and medium therebetween is mainly sky
Gas, although causing the core temperature of internal model 4 to decrease, but not influence the temperature of extrusion mandrel 3.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Creative work can is needed to make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (3)
- A kind of 1. sheath of hv cable expressing technique, it is characterized in that comprising the following steps：A, the unnecessary asphalt caulk that will be attached to cable conductor (1) surface is blown away；B, in the extrusion mandrel (3) for penetrating into cable conductor (1) in extruder head (2)；Inner mould core (4) is provided with the extrusion mandrel (3), gap is left between extrusion mandrel (3) and inner mould core (4), it is described Extrusion mandrel (3) and inner mould core (4) are tubular structure, and the endoporus of extrusion mandrel (3) includes bellmouth (3a) and straight hole (3b), The bigger diameter end of bellmouth (3a) is cable conductor entrance point, and the miner diameter end of the bellmouth (3a) is connected with straight hole (3b)；The inner mould core (4) includes conically shaped (4a) and straight tube (4b), and the bigger diameter end of conically shaped (4a) is stuck in bellmouth (3a) table Face, the miner diameter end of conically shaped (4a) are connected with straight tube (4b), and the straight tube (4b) is extend into straight hole (3b), the straight tube (4b) Termination stretch out extrusion mandrel (3) outside, and projection (5) is provided with the outer wall of the straight tube (4b)；C, by extruding machine by sheath extrusion moulding to cable conductor (1) surface；Cable conductor (1) is penetrated into asphalt caulk blow-dry device in step a, the asphalt caulk blow-dry device be outer barrel (6) and Inner cylinder (7) sleeve structure, it is closing space between the outer barrel (6) and inner cylinder (7), air intake is offered on outer barrel (6) barrel Mouthful (6a), from air inlet (6a) toward asphalt caulk blow-dry device in be passed through compressed air；The inner cylinder (7) includes straight section inner cylinder (7a) and taper inner cylinder (7b), and one end of the straight section inner cylinder (7a) is asphalt caulk The cable conductor import of blow-dry device, the other end are connected with the bigger diameter end of taper inner cylinder (7b), the taper inner cylinder (7b) it is small Footpath end exports for the cable conductor of asphalt caulk blow-dry device, and is provided with air outlet on the barrel of the taper inner cylinder (6b) (7c)。
- 2. a kind of asphalt caulk blow-dry device, it is characterized in that：The asphalt caulk blow-dry device is used to blow away to be attached to cable conductor (1) The unnecessary asphalt caulk on surface, the asphalt caulk blow-dry device are tubular structure, and air inlet (6a) is offered on barrel；The asphalt caulk blow-dry device is the double tubular structure of outer barrel (6) and inner cylinder (7) suit, outer barrel (6) and inner cylinder (7) it Between be closing space, the air inlet (6a) is opened on outer barrel (6) barrel；The both ends open of the inner cylinder (7), inner cylinder (7) include straight section inner cylinder (7a) and taper inner cylinder (7b), the straight section inner cylinder The one end of (7a) is the cable conductor import of asphalt caulk blow-dry device, and the other end is connected with the bigger diameter end of taper inner cylinder (7b), institute The miner diameter end for stating taper inner cylinder (7b) exports for the cable conductor of asphalt caulk blow-dry device, is opened on taper inner cylinder (7b) barrel Provided with air outlet (7a).
- 3. asphalt caulk blow-dry device as claimed in claim 2, it is characterized in that：The outer barrel (6) of the asphalt caulk blow-dry device and Inner cylinder (7) forms by two and half docking, and the hinge by being arranged on outer barrel (6) side is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200783.2A CN104875354B (en) | 2015-04-24 | 2015-04-24 | Sheath of hv cable expressing technique, anti-glued die device and blow-dry device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200783.2A CN104875354B (en) | 2015-04-24 | 2015-04-24 | Sheath of hv cable expressing technique, anti-glued die device and blow-dry device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104875354A CN104875354A (en) | 2015-09-02 |
| CN104875354B true CN104875354B (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510200783.2A Active CN104875354B (en) | 2015-04-24 | 2015-04-24 | Sheath of hv cable expressing technique, anti-glued die device and blow-dry device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878070A (en) * | 2018-06-28 | 2018-11-23 | 安徽徽宁电器仪表集团有限公司 | A kind of pitch blow-dry device |
| CN114368124A (en) * | 2020-10-15 | 2022-04-19 | 郑州天河通信科技有限公司 | A online impurity sweeps structure for optical cable production |
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| CN201201327Y (en) * | 2008-04-15 | 2009-03-04 | 上海华新丽华电力电缆有限公司 | Heat insulation double-layer heat insulating mould core |
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| CN104875354A (en) | 2015-09-02 |
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