CN104821203A - Communication cable based on twisted pair and production method - Google Patents
Communication cable based on twisted pair and production method Download PDFInfo
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- CN104821203A CN104821203A CN201510235378.4A CN201510235378A CN104821203A CN 104821203 A CN104821203 A CN 104821203A CN 201510235378 A CN201510235378 A CN 201510235378A CN 104821203 A CN104821203 A CN 104821203A
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Abstract
The invention provides a communication cable based on twisted pairs. The communication cable comprises a plurality of pairs of twisted pairs twisted with each other. Each twisted pair is twisted by two conductor lines with insulating protection layers, so as to form a double helix structure. The twisting direction (pairwise twisting direction) of the conductor lines is opposite to the twisting direction (concentrated twisting direction) of the twisted pairs. Therefore, when backtwist is needed to be performed on a twisted pair in concentrated twisting, backtwist direction is the same with the twisting direction (pairwise twisting direction) of the conductor lines. Thus, no matter how much backtwist amplitude is (even though 100% backtwist), the two conductor lines of the twisted pair would not separate, and uncontrollable re-twisting process does not exist. With the cable structure, twisting quality of the twisted pairs is not influenced for a cable on which large amplitude backtwist is performed in a concentrated twisting stage, thereby effectively improving quality of products.
Description
Technical field
The invention relates to communications cable production field, particularly a kind of anti-aging communications cable production method and based on the communications cable of this production method and collection strand equipment.
Background technology
The communications cable of existing a kind of routine is combined by many twisted-pair feeders, and twisted-pair feeder (twisted pair, TP) is transmission medium the most frequently used in a kind of generic cabling engineering, and the copper conductor having an insulating protective layer by two forms.The conductor lines that two thoroughly do away with edge is twisted mutually together by certain density, and the electric wave that each root conductor lines radiates in the transmission can be offset by the electric wave that another root uniconductor line sends, and effectively reduces the degree of signal disturbing.Actual when using, multipair (normally four to) twisted-pair feeder wraps in an insulated cable sleeve pipe together, forms twisted-pair communication cable.Loose in order to be not easy after making stranding, many twisted-pair feeders twist together by general meeting, and then coated insulation coating layer, production line are referred to as collection strand.
In existing production technology; (namely in pair twist step) in the process of a twisted-pair feeder is being become by stranded for two conductor lines; usually back twist can be carried out to single conductor line; thus every root conductor lines is not produced from twisting strain in stranding process; thus avoid two conductor lines because scatter from twisting strain, guarantee that two conductor lines effectively twist together.And turn round in process at collection, usually then do not carry out back twist, this twists outer meeting coated insulation coating layer together due to many twisted-pair feeder collection, even if now twisted-pair feeder exists from torsional deformation, many twisted-pair feeders can be pressed on together and can not scatter by insulating coating.
But, present inventor finds, along with the outer field insulating coating of cable in use procedure is aging gradually, the restraining force of insulating coating bar twisted-pair feeder can significantly reduce, and now every bar twisted-pair feeder does not disappear because of the deformational stress produced from torsional deformation, along with the quick decline of insulating coating restraining force, every bar twisted-pair feeder can produce recovery trend (namely changing into without certainly turning round state from state of certainly turning round) under the effect of deformational stress, this recovery can make the length of twisted-pair feeder in a certain section change, because signal transmits on many twisted-pair feeders, when twisted-pair feeders different in a cable produces different length variations in different sections, then can the transmission of signal in different twisted-pair feeders unbalanced, signal transmission quality is caused significantly to decline.
What is more important, in existing production technology, the direction that during collection strand, the twisted direction of twisted-pair feeder is twisted with conductor lines during pair twist is consistent, because if both directions are inconsistent, in collection strand process twisted-pair feeder certainly turn round the direction twisted with conductor lines during pair twist, direction and contrary, thus two of twisted-pair feeder uniconductor lines can be caused to scatter.And when during collection strand, the direction twisted with conductor lines during pair twist, twisted direction of twisted-pair feeder is consistent, if increase the action of back twist in collection strand process, due to back twist direction is inevitable and collection to twist direction contrary, therefore the nature direction twisted with conductor lines during pair twist, twisting direction of back twist action is contrary, because cable in actual production constantly advances, during collection strand, every bar twisted-pair feeder can first by back-twist device and then enter stranding device, if it is inconsistent to collect the direction that in the direction and pair twist step of twisting back twist in step, conductor lines is twisted, so can be scattered in back-twist device on production equipment by two conductor lines of twisted-pair feeder after significantly back twist action, then enter into stranding device to twist together due to the twisting of twisted-pair feeder again, but the stranding device of collection strand equipment is mainly in order to stranded many twisted-pair feeders, for every bar twisted-pair feeder self two wires again stranded and uncontrolled, therefore easily cause stranded now two wires again stranded for stranded uneven during twisted-pair feeder, cable quality declines to a great extent.
Summary of the invention
Even if the object of the invention is to avoid above-mentioned weak point of the prior art and provides a kind of communications cable that can make to collect in process of production the strand stage its twisted-pair feeder also can not scatter when carrying out significantly back twist, thus guarantee to collect in strand process and can not decline because of the cable performance that significantly back twist action causes, the manufacture method of this cable is provided simultaneously.
The object of the invention is achieved through the following technical solutions:
Provide a kind of communications cable based on twisted-pair feeder; at least comprise two to mutually twisted twisted-pair feeder; every bar twisted-pair feeder forms by least two conductor lines with insulating protective layer are mutually twisted, and the twisted direction of described conductor lines is contrary with the twisted direction of described twisted-pair feeder.
Wherein, every bar twisted-pair feeder is all less than the half of the common twisted angle value of all twisted-pair feeders from the angle value turned round.
Wherein, what every bar twisted-pair feeder self was straight advances along spiral path, thus makes all twisted-pair feeders without twisting together of certainly turning round.
Additionally provide a kind of manufacture method of the communications cable based on twisted-pair feeder, comprising:
Pair twist step: the conductor lines two with insulating protective layer is mutually twisted to form twisted-pair feeder along Z-direction;
Collection strand step: twisted to form cable along S direction in the lump after one end of at least two twisted-pair feeders being gathered together by stranded action.
Wherein, the other end of every bar twisted-pair feeder is also rotated along Z-direction with back twist alone by back twist action by described collection strand step, twisting in doing every bar twisted-pair feeder to be not less than in stranded action every bar twisted-pair feeder along 50% of S direction rotation angle value along the rotation angle value of Z-direction.
Wherein, in described back twist action, the rotation angle value along Z-direction of every bar twisted-pair feeder to equal in stranded action every bar twisted-pair feeder along S direction rotation angle value, thus straight the advancing along spiral path of every bar twisted-pair feeder self made.
The beneficial effect of the invention: the invention provides a kind of in the communications cable of twisted-pair feeder, this communications cable comprises multipair mutually twisted twisted-pair feeder, every bar twisted-pair feeder is mutually twisted to form double-spiral structure by two conductor conductor lines with insulating protective layer, the twisted direction (i.e. pair twist direction) of described conductor lines is contrary with the twisted direction (namely collect and twist direction) of described twisted-pair feeder, therefore, when when collecting strand, twisted-pair feeder carries out back twist to needs, the direction (i.e. pair twist direction) stranded with uniconductor line, back twist direction is identical, two uniconductor lines of twisted-pair feeder can be understood by stranded along Z-direction further in back-twist device, then in stranding device, twisted-pair feeder twists along S direction, what the conductor lines of twisted-pair feeder was increased in back-twist device is stranded by rollback, no matter back twist amplitude much (even if 100% back twist) in this process, two conductor lines of twisted-pair feeder also can not be scattered, naturally there is not uncontrollable again stranded process yet, therefore, the cable structure of the invention can not affect the stranded quality of twisted-pair feeder on the cable that the collection strand stage carries out significantly back twist, effectively improve the quality of product.
Accompanying drawing explanation
Accompanying drawing is utilized to be described further the invention, but the embodiment in accompanying drawing does not form any restriction to the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of the anti-aging communications cable of the invention.
Embodiment
With the following Examples the invention is further described.
The embodiment of the production method of a kind of anti-aging communications cable of the invention, comprises the following steps successively:
Pair twist step: the conductor lines two with insulating protective layer (can be made of copper; also can be the conductor lines that other electric conducting materials such as aluminium are made; as long as electric conductivity meets the demands) mutually twisted to form twisted-pair feeder along Z-direction; meanwhile, the back-twist device of pair twister is utilized to carry out back twist to each conductor lines.This step can see existing production technology, and main purpose produces twisted-pair feeder, as long as can produce along the mutually twisted twisted-pair feeder of Z-direction.Wherein, Z-direction refers to clockwise direction.
Collection strand step: on the one hand, twisted to form cable along S direction in the lump after being gathered together the front end of four twisted-pair feeders by stranded action, wherein S direction is counterclockwise; On the other hand, the other end of every bar twisted-pair feeder is made to rotate along Z-direction with back twist alone by back twist action, in back twist action, every bar twisted-pair feeder to equal in stranded action every root twisted-pair feeder along S direction rotation angle value along the rotation angle value of Z-direction, i.e. back twist rate be 100%, thus every bar twisted-pair feeder is not all had from torsional deformation in the process of collection strand, in cable after collection strand, twisted-pair feeder is straight advancing along spiral path, and four twisted-pair feeders are twisted together mutually by this helical structure.
It should be noted that, this place adopts back twist rate to be 100% to be the effect in order to ensure optimum, certain, if under the condition such as the antiageing effect of insulating coating is relatively good, back twist rate also can suitably reduce, but, back twist rate should lower than 50%, if lower than 50%, then in final product, the situation of certainly turning round of twisted-pair feeder is in fact still more serious, therefore still easily deformation occurs.
It should be noted that, also there is an important difference in this collection strand step and prior art, be exactly the direction twisted with the conductor lines of conductor in pair twist step, direction stranded in stranded action be contrary, the benefit done like this is the direction twisted with conductor lines in pair twist step, the direction of back twist in collection strand step is consistent.
Because cable in actual production constantly advances, during collection strand, every bar twisted-pair feeder can first by back-twist device and then enter stranding device, if it is inconsistent to collect the direction that in the direction and pair twist step of twisting back twist in step, conductor lines is twisted, so in fact, two conductor lines of twisted-pair feeder can be scattered on production equipment in back-twist device, then enter into stranding device to twist together due to the twisting of twisted-pair feeder again, but the stranding device of collection strand equipment is mainly in order to stranded many twisted-pair feeders, two conductor lines for every bar twisted-pair feeder self are again stranded and uncontrolled, therefore easily cause stranded now two conductor lines again stranded for stranded uneven during twisted-pair feeder, cable quality declines to a great extent.If and the direction that in collection strand step, the direction of back twist is twisted with uniconductor line in pair twist step is consistent, so in fact, two uniconductor lines of twisted-pair feeder can return by stranded along Z-direction further in back-twist device, then in stranding device, twisted-pair feeder twists along S direction, what two of twisted-pair feeder conductor lines were increased in back-twist device is stranded by rollback, thus it is (namely straight to return to the state after pair twist, state without certainly turning round), because two conductor lines of twisted-pair feeder in this process are not scattered, therefore there is not uncontrollable again stranded process yet, thus ensure that the quality of cable.
Encapsulation steps: the outside coated insulation covering of cable being twisted into type at collection.
Adopt above production technology, the following communications cable can be obtained: this communications cable comprises four to mutually twisted twisted-pair feeder, every bar twisted-pair feeder of this telecommunication cable forms by two conductor lines with insulating protective layer are mutually twisted, and the twisted direction of conductor lines is contrary with the twisted direction of described twisted-pair feeder; What every bar twisted-pair feeder self was straight advances along spiral path, to make all twisted-pair feeders without twisting together of certainly turning round.Certainly, according to the requirement of actual production technique and the performance of insulating coating, twisted-pair feeder in actual production process, also can be allowed to there is certainly turning round by a small margin, but, require that every bar twisted-pair feeder is less than 50% of the common twisted angle of all twisted-pair feeders from the angle turned round.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not the restriction to the invention protection range; although done to explain to the invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the invention or equivalent replacement, and not depart from essence and the scope of the invention technical scheme.
Claims (6)
1. the communications cable based on twisted-pair feeder; at least comprise two mutual twisted twisted-pair feeders; every bar twisted-pair feeder forms by least two conductor lines with insulating protective layer are mutually twisted, it is characterized in that: the twisted direction of described conductor lines is contrary with the twisted direction of described twisted-pair feeder.
2. a kind of communications cable based on twisted-pair feeder as claimed in claim 1, is characterized in that: every bar twisted-pair feeder is all less than the half of the common twisted angle value of all twisted-pair feeders from the angle value turned round.
3. a kind of communications cable based on twisted-pair feeder as claimed in claim 1, is characterized in that: what every bar twisted-pair feeder self was straight advances along spiral path, thus makes all twisted-pair feeders without twisting together of certainly turning round.
4., based on a manufacture method for the communications cable of twisted-pair feeder, it is characterized in that comprising:
Pair twist step: the conductor lines two with insulating protective layer is mutually twisted to form twisted-pair feeder along Z-direction;
Collection strand step: twisted to form cable along S direction in the lump after one end of at least two twisted-pair feeders being gathered together by stranded action.
5. the manufacture method of a kind of communications cable based on twisted-pair feeder as claimed in claim 4, it is characterized in that, the other end of every bar twisted-pair feeder is also rotated along Z-direction with back twist alone by back twist action by described collection strand step, twisting in doing every bar twisted-pair feeder to be not less than in stranded action every bar twisted-pair feeder along 50% of S direction rotation angle value along the rotation angle value of Z-direction.
6. the manufacture method of a kind of communications cable based on twisted-pair feeder as claimed in claim 4, it is characterized in that, in described back twist action, the rotation angle value along Z-direction of every bar twisted-pair feeder to equal in stranded action every bar twisted-pair feeder along S direction rotation angle value, thus straight the advancing along spiral path of every bar twisted-pair feeder self made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510235378.4A CN104821203A (en) | 2015-05-11 | 2015-05-11 | Communication cable based on twisted pair and production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510235378.4A CN104821203A (en) | 2015-05-11 | 2015-05-11 | Communication cable based on twisted pair and production method |
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| CN104821203A true CN104821203A (en) | 2015-08-05 |
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| CN201510235378.4A Pending CN104821203A (en) | 2015-05-11 | 2015-05-11 | Communication cable based on twisted pair and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766672A (en) * | 2018-06-07 | 2018-11-06 | 飞讯达（厦门）信息技术有限公司 | Twisted-pair cable and preparation method thereof |
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| US20110127064A1 (en) * | 2009-11-25 | 2011-06-02 | Rivernider Jr James F | Communication cable |
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| CN204632430U (en) * | 2015-05-11 | 2015-09-09 | 东莞市台烽电子有限公司 | A kind of communications cable based on twisted-pair feeder |
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2015
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| CN2087807U (en) * | 1991-04-13 | 1991-10-30 | 山东滕州市电缆厂 | Collecting-distributing type instrument signal cable |
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Address after: 523302 Guangdong city of Dongguan province Shijie five village Zhen Heng Kau Industrial Zone Applicant after: Dongguan City Tai Feng Electronics Co., Ltd. Address before: Courtyard 232, North civilization Road, Guangdong, Maoming Applicant before: Dongguan City Tai Feng Electronics Co., Ltd. |
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Application publication date: 20150805 |
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