CN101502995B - Cable protection pipe with built-in cable as well as method for processing the same and processing equipment - Google Patents
Cable protection pipe with built-in cable as well as method for processing the same and processing equipment Download PDFInfo
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- CN101502995B CN101502995B CN2008100335315A CN200810033531A CN101502995B CN 101502995 B CN101502995 B CN 101502995B CN 2008100335315 A CN2008100335315 A CN 2008100335315A CN 200810033531 A CN200810033531 A CN 200810033531A CN 101502995 B CN101502995 B CN 101502995B
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- cable protection
- protection sleeve
- extrusion die
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Abstract
The invention provides a cable protection tube embedded with cables and a processing method and a processing device thereof. In the process of manufacturing the cable protection tube, a composite extrusion die, which is provided with at least one flow passage inside a section mould and a passage inside a mandrel for the cables to pass through, leads the cables into the extrusion die at a leading speed synchronous with the extrusion speed of an extruder so that a cable protection tube product embedded with cables is manufactured. The cable protection tube embedded with cables in the invention can be widely applied to construction of communication or power network in the fields of telecommunications, highway, railway, army troops and the like; cabling mounting and construction are very convenient, and cables are rarely damaged; the processing method of the extrusion die and the cable protection tube in the invention can also be applied to pipeline processing in related fields.
Description
Technical field
The present invention relates to a kind of processing method that is used for the cable protection sleeve of cable, particularly a kind of inside directly is equiped with processing method and the process equipment that is adopted and the product that is obtained of the cable protection sleeve of cable.
Background technology
In the daily life, cable (for example cable, optical cable) is widely used in realizing in all trades and professions transmission of various dissimilar signals, for example the Digital Transmission of the transmission of electric power and distribution, signal and communication, computer system etc.Thereby the cable protection sleeve that is used for the communications cable is to realize the necessary material of the communication network development in each field (particularly telecommunications, highway, railway, electric power, army etc.).
In existing construction cloth cable, normally trench digging is imbedded cable protection sleeve earlier, with high pressure draught cable is blown into cable protection sleeve after the backfill soil again.Adopt the deficiency of this form of construction work to be: expend time in long, workload is big, cost is high and efficient is low, the condition effect such as landform, weather, cabling equipment that especially can be subjected to constructing, and the restriction of technical staff's construction experience; In addition, because the technology of air-blowing cabling is also very imperfect, often after laying hundreds of rice distance, also needs to ditch once more and dig out cable protection sleeve and carry out answering and blow more than once; Further, formerly behind the pipe laying in the work progress of cabling, can damage cable inevitably, gently then cause waste of material, heavy then under the situation of finding damage and continuing to use, probably because the generation that signal that transmits or power breakdown cause major accident.
Though also adopted variety of way protection to be installed in the interior cable of cable protection sleeve in the prior art; but focus on improvement to the cable protection sleeve internal structure more; not only increased the complexity of cable protection sleeve process equipment, the damage that reduces cable in the cabling process has also been acted on not quite.
Summary of the invention
The object of the present invention is to provide a kind of improved method of processing cable protection sleeve, when generating this cable protection sleeve, corresponding cable is inserted in the cable protection sleeve, thereby avoid or reduce in the work progress damage, and effectively improve efficiency of construction cable.
For this reason, the processing method that is used for the cable protection sleeve of cable provided by the invention comprises the steps:
A) the cable protection sleeve raw material is sent at least one extruder;
B) cable is introduced extrusion die by draw-gear, carry out coextrusion die with the cable protection sleeve raw material;
C) the cable protection sleeve pipe that is built-in with cable to extrusion molding carries out sizing;
D) the pipe cooling shaping after utilizing cooling device to sizing.
Advantageously, before step b), a heat insulation guide pin bushing is installed in the described extrusion die, in order to described cable protection sleeve raw material and cable are isolated, when being shaped, the cable protection sleeve pipe can avoid high temperature to the mistake fire damage of cable or between cable and pipe inwall, produce adhesion thus effectively.
Advantageously described extrusion die is set to have the compound extrusion die of two-layer at least runner, make and to insert cable and multiple cable protection sleeve raw material in this extrusion die simultaneously and do not mix, the cable protection sleeve that can correspondingly extrude single or multiple lift after the process extrusion die is shaped is to be fit to different demands, also described heat insulation guide pin bushing can be arranged in the passage that of this extrusion die is placed with cable, obviously, it is more effective to carry out heat insulation effect by this way.
Before step b), also comprise step: regulate the operating temperature of extruder and extrusion die, and set extruded velocity and draw-gear introducing speed to cable.
Preferably the introducing speed with described cable is set at the extruded velocity of described extruder synchronous, make and do not have tangible relative displacement between cable and the pipe, thereby the traction force to cable is quite little, can not produce tensile damage, also can not cause scuffing to the pipe inwall.
Described operating temperature is preferably set between 175 ℃ to 235 ℃, and comprises 175 ℃ and 235 ℃.In this temperature range, can guarantee the quality of production of cable protection sleeve, also be unlikely to simultaneously too high temperature to process equipment, especially cable is produced adverse influence.
In addition, before step a), also can comprise the step of checking cable protection sleeve raw material and cable respectively, to determine corresponding processing technology according to the test verification result that the performance indications of raw material are carried out, guarantee that properties of product meet the requirements, simultaneously, detection to cable can prevent that underproof cable from entering into operation, avoids waste of material.And, also can comprise the step of the cable protection sleeve raw material being carried out proportioning according to the technical recipe requirement.
Usually, above-mentioned cable protection sleeve raw material mainly comprises high density polyethylene (HDPE), color masterbatch or silicon material, these raw materials are put at least one extruder respectively carry out co-extrusion, and clamp-on in the same extrusion die, thereby can produce the cable protection sleeve of individual layer homogenous material or the compound cable protection sleeve of the multiple material of multilayer.
Advantageously, the sizing process in the step c) is under vacuum environment, utilizes the sizing mould to cool off sizing.After in the sizing mould in pipe is introduced in vacuum tank, fit with the inwall of sizing mould to form negative pressure (vacuum), to make the flexible pipe base that processes under the condition of high temperature at the gas that pipe cooling period extracts out in the case, thus the external diameter and the wall thickness of definite cable protection sleeve.
Further, the described cooling device in the step d) is preferably at least one bosh.Pipe through vacuum sizing progressively passes through these bosh cool to room temperature and finalizations.
After making the cable protection sleeve finished product, also can carry out such as follow-up secondary process operations such as lettering, reel and product inspections.
The present invention also provides a kind of cable protection sleeve that is used for cable, wherein, is equiped with the cable of inserting synchronously in the described cable protection sleeve in the cable protection sleeve process.
Another aspect of the present invention also provides a kind of extrusion die that is used to process cable protection sleeve, this extrusion die comprises die bottom plate, be installed in the core on the described die bottom plate, be set in the mouth mould on the described core, and be arranged at pattern between described core and the described mouthful mould, wherein, described extrusion die is compound extrusion die, in described pattern, be provided with at least one laminar flow road, and in described core, be provided with the passage that passes through for cable.
Especially, at least one laminar flow road in the described pattern is set to separate each other, and is communicated at least one extruder by external interface, makes various cable protection sleeve raw materials to enter into different runners in the pattern according to the processing needs.
Further, be provided with heat insulation guide pin bushing in the passage in described core.
Outside at described extrusion die also is equiped with heater.
The engineering time of adopting the present invention can effectively reduce cabling in order to the extrusion die of processing cable protection sleeve and the cable protection sleeve that is built-in with cable that corresponding processing method is obtained, reduce the construction working amount, improved efficient, especially avoid or reduced the damage that cable is subjected in laid processes, improved the serviceability rate of engineering construction; Simultaneously, also solved the problem that badly causes the cabling difficulty in communication or the electric power networks construction because of geographical conditions; In addition, because cable and these two kinds of products of cable protection sleeve are advantageously combined, not only just realized the protection to cable between the transportation storage life, also improved the conevying efficiency of product, freight significantly reduces.
Description of drawings
Fig. 1 is the process chart of the preferred processing method of cable protection sleeve of the present invention;
Fig. 2 a wherein, is built-in with cable for the schematic cross sectional views of the cable protection sleeve that processing method obtained of cable protection sleeve according to the present invention in cable protection sleeve;
Fig. 2 b is the schematic side elevation of cable protection sleeve shown in Fig. 2 a;
Fig. 3 a is and the schematic cross sectional views of the similar cable protection sleeve of Fig. 2 a that difference is also to be formed with in the cable protection sleeve compound silicon layer;
Fig. 3 b is the schematic side elevation of cable protection sleeve shown in Fig. 3 a;
Fig. 4 is for being equiped with the schematic cross sectional views of protecting the cable plug at the two ends of the cable protection sleeve shown in Fig. 2 a and the 2b;
Fig. 5 is for being equiped with the schematic cross sectional views of protecting the cable plug at the two ends of the cable protection sleeve shown in Fig. 3 a and the 3b;
Fig. 6 a is the schematic side elevation of the preferred extrusion die of the present invention;
Fig. 6 b is the cutaway view along the X-X line of Fig. 6 a.
Description of reference numerals
1 monolayer plastic, 2 cables
3 compound silicon layers 4 protect the cable plug
5 extrusion dies, 51 die bottom plates
52 cores, 521 cable passages
53 patterns, 531 outer runners
54 mouthfuls of moulds of 532 internal layer runners
55 pressing plates, 56 outer layer interfaces
Layer interface 6 connecting bolts in 57
7 heating collars, 8 thermocouples
The specific embodiment
Describe the present invention in detail in order to the extrusion die and the corresponding processing method of processing cable protection sleeve and the exemplary products of passing through this method processing acquisition, to understand structure of the present invention, function and effect better below in conjunction with accompanying drawing.
From process chart shown in Figure 1 as can be seen, the process of cable protection sleeve of the present invention can start to the check of cable protection sleeve raw material with to the check of cable, wherein to advancing the test verification that factory's raw material such as high density polyethylene (HDPE), color masterbatch, silicon material etc. carry out performance indications, in order to determine that raw material satisfies the production requirement of cable protection sleeve (for example HDPE Silicon core pipe or plastic tube), guarantees that the performance of product meets standard; And cable is detected, flow in the operation in order to prevent underproof cable products, cause and scrap.
Subsequently, by technical recipe requirement proportioning raw material (for example proportioning of color masterbatch, silicon material etc.); Simultaneously, detect good cable and be placed on the sale at reduced prices frame, can by draw-gear for example hauling machine pull out cable.
Then, the temperature of extruder and extrusion die is arranged in the suitable processing temperature scope, promptly 175 ℃～235 ℃, and will for example high density polyethylene (HDPE), color masterbatch and silicon material add three extruders respectively through proportion raw material; Simultaneously, introduce speed according to the cable of setting cable is introduced extrusion die, here, the extruded velocity of described introducing speed and extruder is synchronous.
Three extruders are opened simultaneously, make the extrusion die co-extrusion of various main and auxiliary raw material that is in molten in three extruders form pipe through being arranged on the outlet of extruder place, and this moment, the heat insulation guide pin bushing by having put into extrusion die before also synchronously is built into pipe with the cable of raw material isolation.
Pipe continues to be made it to be in the cooling and shaping state, and the external diameter and the wall thickness of pipe are determined by in the sizing mould of sync pulling in the vacuum sizing case together with cable.Progressively be cooled to room temperature with finalization through several boshes then.
Here, several follow-up secondary process operations have schematically been enumerated, that is: the cable protection sleeve finished product of making is drawn to inker (for example hot padding word machine) with at marks such as cable protection sleeve outer wall printed product specifications and models, manufacturer, dates, by hauling machine it is drawn to the rolling plate rail coiling sabot again; Be wound on the cable protection sleeve length customization in accordance with regulations on the plate rail, and to be checked with packaging material winding product outside; Subsequently the sample pipe behind the product lower wall of one-tenth dish is detected by product standard, detect cable performance simultaneously, the product that cable protection sleeve and cable are all qualified allows warehouse-in, to guarantee qualified product export.
Fig. 2 a-5 shows two kinds of cable protection sleeves that make by above-mentioned processing method respectively.Wherein, the individual layer cable protection sleeve of the cable protection sleeve that is built-in with cable 2 shown in Fig. 2 a and the 2b for only making by monolayer plastic 1, and the cable protection sleeve shown in Fig. 3 a and the 3b is the two-layer compound cable protection sleeve, inwall at monolayer plastic 1 also is formed with the compound silicon layer 3 of one deck, and this compound silicon layer 3 helps to reduce the friction of cable 2 and cable protection sleeve inwall.Certainly, also can form more multi-layered cable protection sleeve, for example on outermost wall, can form the sign band of distinguishing the cable function by the colorant of different colours according to the required function of reality.
The two ends that Fig. 5 and Fig. 6 show above-mentioned two kinds of cable protection sleeves are plugged with the state that protects cable plug 4.In the storage and transportation of cable protection sleeve, same very important to being built in the protection of the cable 2 in the cable protection sleeve, to seal the cleaning that can effectively guarantee in the cable protection sleeve pipeline dry and comfortable with protecting cable plug 4, can extract out smoothly during the replacing cable also guaranteeing after.
Describe extrusion die 5 of the present invention in detail with reference to Fig. 6 below.
Fig. 6 shows a kind of preferred implementation of extrusion die 5.This extrusion die 5 comprises die bottom plate 51, is installed in the core 52 on this die bottom plate 51, is set in the mouth mould 54 on the core 52, and is arranged at the pattern 53 between core 52 and mouthful mould 54.
The most favourable part of extrusion die 5 of the present invention is that it is set to compound extrusion die, not only in pattern 53, be provided with at least one laminar flow road, and in core 52, also be provided with the passage 521 that passes through for cable 2, it is interior so that cable 2 is coated on wherein that heat insulation guide pin bushing (not shown) can preferably be arranged on this passage 521, makes it can not be subjected to the influence of the cable protection sleeve raw material under the high temperature during processing.In addition, the setting that separates each other of at least one laminar flow roads in the pattern 53, and be communicated at least one extruder by external interface.In the present embodiment, can in pattern 53, be provided with two-layer runner, can be ccontaining the outer runner 531 of the outer raw material of cable protection sleeve and internal layer runner 532 that can ccontaining internal layer raw material, two- layer runner 531 and 532 is layer interface 56 and interior layer interface 57 outside runner exit place separately is connected with respectively, two interfaces 56,57 are connected respectively to two extruders, thereby can produce a as Fig. 3, the cable protection sleeve shown in the 3b.On this extrusion die 5, also be provided with pressing plate 55, in order to mouth mould 54, pattern 53, core 52 and die bottom plate 51 are fixed together by a plurality of connecting bolts 6.
As everyone knows, for extrusion die, it mainly is the melted material under the processing high temperature, thereby need be equiped with heater in the outside of mould.Further, obtain needed shape and size for guaranteeing product, the part of most critical is exactly mouthful mould and core in the mould, thus on the outer wall of mouth mould 54, especially need to install heater, and should be the heater that can regulate temperature.In the present embodiment, can adopt the heating collar 7 and the thermocouple 8 that coat mouthful mould 54 and pressing plate 55, pattern 53 and die bottom plate 51 outer walls to be used as adjustable heater.
By foregoing description as seen, on the basis of using at least one extruder, in conjunction with extrusion die 5 of the present invention, can produce the cable protection sleeve dealing with various requirements that is built-in with cable according to processing method of the present invention, the automaticity height of entire equipment, production performance are stablized, and can join speed arbitrarily to improve the quality of production and production efficiency to each extruder and corresponding hauling machine.Certainly, the processing method of extrusion die of the present invention and cable protection sleeve also can be used for the pipeline processing of association area.
Technology contents of the present invention and technical characterstic have disclosed as above; yet be appreciated that; under creative ideas of the present invention; those skilled in the art can make various changes and modifications to foregoing; but all belong to protection scope of the present invention, compound extrusion die production that for example extrusion die 5 can be set to have multithread road, stage construction or many thermal insulation layers is built-in with the cable protection sleeve of a plurality of cables or has cable protection sleeve of multiple structure or the like.Thereby the description of above-mentioned embodiment is exemplary rather than restrictive, and protection scope of the present invention is determined by claim.
Claims (9)
1. a processing method that is used for the cable protection sleeve of cable comprises the steps:
A) the cable protection sleeve raw material is sent at least one extruder;
B) cable is introduced extrusion die by draw-gear, carry out coextrusion die with the cable protection sleeve raw material, described extrusion die comprises die bottom plate, be installed in the core on the described die bottom plate, be set in the mouth mould on the described core, and be arranged at pattern between described core and the described mouthful mould, described extrusion die is compound extrusion die, in described pattern, be provided with at least one laminar flow road, and in described core, be provided with the passage that passes through for cable, the setting that separates each other of at least one laminar flow road in the described pattern, and be communicated at least one extruder by external interface;
C) the cable protection sleeve pipe that is built-in with cable to extrusion molding carries out sizing;
D) the pipe cooling shaping after utilizing cooling device to sizing.
Also comprising before the step b): the heat insulation guide pin bushing of installing in described extrusion die, in order to cable protection sleeve raw material and cable are isolated.
2. the processing method of cable protection sleeve according to claim 1 is characterized in that, heat insulation guide pin bushing is arranged in the passage that is placed with cable.
3. the processing method of cable protection sleeve according to claim 1 and 2 is characterized in that, also comprises before step b): regulate the operating temperature of extruder and described extrusion die, and set extruded velocity and the draw-gear introducing speed to cable.
4. the processing method of cable protection sleeve according to claim 3 is characterized in that, the introducing speed of described cable and the extruded velocity of described extruder are synchronous.
5. the processing method of cable protection sleeve according to claim 4 is characterized in that, the operating temperature of described extruder and described extrusion die is between 175 ℃ to 235 ℃, and comprises 175 ℃ and 235 ℃.
6. the processing method of cable protection sleeve according to claim 1 is characterized in that, the sizing process in the step c) is under vacuum environment, utilizes sizing mold cools down sizing.
7. the processing method of cable protection sleeve according to claim 1 is characterized in that, the described cooling device in the step d) is at least one bosh.
8. extrusion die that is used to process cable protection sleeve, comprise die bottom plate, be installed in the core on the described die bottom plate, be set in the mouth mould on the described core, and be arranged at pattern between described core and the described mouthful mould, it is characterized in that, described extrusion die is compound extrusion die, in described pattern, be provided with at least one laminar flow road, and in described core, be provided with the passage that passes through for cable, the setting that separates each other of at least one laminar flow road in the described pattern, and be communicated at least one extruder by external interface, be provided with heat insulation guide pin bushing in the passage in described core.
9. extrusion die according to claim 8 is characterized in that, is equiped with heater in the outside of described extrusion die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100335315A CN101502995B (en) | 2008-02-04 | 2008-02-04 | Cable protection pipe with built-in cable as well as method for processing the same and processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100335315A CN101502995B (en) | 2008-02-04 | 2008-02-04 | Cable protection pipe with built-in cable as well as method for processing the same and processing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN101502995A CN101502995A (en) | 2009-08-12 |
| CN101502995B true CN101502995B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100335315A Expired - Fee Related CN101502995B (en) | 2008-02-04 | 2008-02-04 | Cable protection pipe with built-in cable as well as method for processing the same and processing equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681118A (en) * | 2012-04-28 | 2012-09-19 | 成都亨通光通信有限公司 | Optical cable protective casing pipe and production method thereof |
| CN105398015B (en) * | 2014-05-26 | 2017-06-06 | 郑文斌 | A kind of method for manufacturing air-blowing pipeline |
| EP3655604A1 (en) * | 2017-07-20 | 2020-05-27 | Pressan Madeni Esya Sanayi Ve Ticaret Anonim Sirketi | Method and apparatus for manufacturing a bowden cable and bowden cable |
| CN110355974A (en) * | 2018-04-08 | 2019-10-22 | 烽火通信科技股份有限公司 | A kind of molding equipment and moulding process of the cable jacket being embedded in rigidity reinforced element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846100Y (en) * | 2005-12-23 | 2006-12-13 | 鲁能泰山曲阜电缆有限公司 | Cable sheath extruding self setting core mouth mold |
| CN201009417Y (en) * | 2007-03-19 | 2008-01-23 | 吴江市光电通信线缆总厂 | Plastic extruding mold against cable conductor scald |
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2008
- 2008-02-04 CN CN2008100335315A patent/CN101502995B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846100Y (en) * | 2005-12-23 | 2006-12-13 | 鲁能泰山曲阜电缆有限公司 | Cable sheath extruding self setting core mouth mold |
| CN201009417Y (en) * | 2007-03-19 | 2008-01-23 | 吴江市光电通信线缆总厂 | Plastic extruding mold against cable conductor scald |
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| CN101502995A (en) | 2009-08-12 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Hawei Engineering Materials Co., Ltd. Assignor: Shanghai Hawei New Materials & Technology Co., Ltd. Contract fulfillment period: 2009.10.6 to 2014.10.5 Contract record no.: 2009110000252 Denomination of invention: Cable protection pipe with built-in cable as well as method for processing the same and processing equipment License type: Exclusive license Record date: 20091026 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.10.6 TO 2014.10.5; CHANGE OF CONTRACT Name of requester: BEIJING HAWEI CONSTRUCTION MATERIAL CO., LTD Effective date: 20091026 |
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Effective date of registration: 20091211 Address after: Shanghai Xinye Road, Qingpu Industrial Park, No. 800 post encoding: 201707 Applicant after: Shanghai Harvey new material technology Limited by Share Ltd Co-applicant after: Beijing Hawei Engineering Materials Co., Ltd. Address before: Shanghai Xinye Road, Qingpu Industrial Park, No. 800 post encoding: 201707 Applicant before: Shanghai Hawei New Materials & Technology Co., Ltd. |
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