CN208637176U

CN208637176U - A kind of servo cable

Info

Publication number: CN208637176U
Application number: CN201820481616.9U
Authority: CN
Inventors: 张亮; 蒋健明
Original assignee: Zhejiang Cardiff Cable Co Ltd
Current assignee: Zhejiang Cardiff Cable Co Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2019-03-22
Anticipated expiration: 2028-04-04

Abstract

The utility model discloses a kind of servo cables, it from the inside to the outside successively include wrapping layer, external shielding layer and oversheath, wherein, the outer surface of a gasket for packing is set to include power line and at least one signal wire, power line and signal wire surrounded in regular twisted mode for the inside of wrapping layer；Include two cable cores being arranged in a manner of pair twist in signal wire, one layer of wrapping layer is set outside the cable core of pair twist setting, the outside of wrapping layer is internal shield；Conductor includes the insulating layer of conducting wire and outside.

Description

A kind of servo cable

Technical field

Originally practical to be related to field of cables more particularly to a kind of servo cable.

Background technique

Industrialization degree is higher and higher at present, and equipment is higher using the requirement of servo, and the performance synchronization of electric wire is promoted to reach To the requirement of servo transmission performance, mechanical performance, the working environment of servo cable is mostly mobile occasion, it is desirable that the resistance to shifting of cable The dynamic electric wire that the high life, existing product comprehensive transmission, movement, high life meet in the market is simultaneously few, thus the utility model Provide the servo cable of high life a kind of.

Utility model content

To achieve the above object, the utility model the following technical schemes are provided:

A kind of servo cable successively includes wrapping layer, external shielding layer and oversheath, wherein described wrapped from the inside to the outside Power line and at least one signal wire are provided in layer, the power line and the signal wire surround a center-filled in just Advise stranded mode setting.

In some embodiments, the signal wire includes two cable cores, and the cable core is arranged in pair twist, the cable A wrapping layer is arranged in outer surface after core is twisted.

In some embodiments, the cable core pair when the signal wire quantity is greater than one, in every signal wire The stranding distance of strand is different, to prevent from interfering with each other between cable core.

In some embodiments, an internal shield is set outside the wrapping layer, and the internal shield is wire It weaves, the angle of weave is 45 ° ± 5 °, and count is not less than 85%, increases electricity while ensureing shield effectiveness The pliability of cable.

In some embodiments, the cable core includes the sheath outside conductor and conductor.

In some embodiments, the power line includes the insulating layer outside conductor and conductor.

In some embodiments, the conductor by fine wire successively using son twist and compound strand in the way of Twisted setting, the sub- strand stranding distance are 20~25 times of twisted outer diameter, and the stranding distance of compound strand is 12~14 times of twisted outer diameter.

In some embodiments, the strand that conductor twists is to identical to direction as the strand of the compound strand.

In some embodiments, filling is provided in the gap between the power line and the signal wire Rope, to prevent inner wrap and reduce friction.

In some embodiments, the external shielding layer forms for metal wire knitted, the angle of weave be 45 ° ± 5 °, count is not less than 85%.

By using above-mentioned technical proposal, have the advantages that it compared with prior art

(1) it is provided with shielded layer in the outside of the outside of signal wire and cable, the inner surface of shielded layer is provided with Wrapping layer avoids the friction between shielded layer and conducting wire while guaranteeing shield effectiveness, for needing frequent mobile working For servo cable can effectively smaller abrasion, extend the service life of cable, thus reduce factory replacement cable cost.

(2) braiding layer is woven using fine wire, and angle of weave is about 45 °, and count is greater than 85%, guarantees to compile Appearance and transfger impedance are knitted, while guaranteeing shield effectiveness, utmostly reduces the influence to bending radius, to meet cable Often certain work requirements；And cable includes two-layer screen layer, effectively prevents the strong signal interference of all directions, and is reduced The electromagnetic interference that leaks, information transmit indifference.

(3) cable core in signal wire is arranged using pair twist mode, and when signal wire is one more than, cable core pair twist therein is twisted Away from not identical, avoid interfering with each other between core wire.

(4) conducting wire twists identical with the direction of compound strand, can effective lifting lead wire softness, further decrease bending Radius.

Detailed description of the invention

Fig. 1 is the utility model servo cross-section of cable structural schematic diagram；

Label declaration

1- oversheath, 2- external shielding layer, 3- conductor, 4- gasket for packing, 5- internal shield, 6- insulating layer.

Specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, by the way that we are described below The feature and advantage of case will be apparent from, it should be noted that, attached drawing is all made of very simplified form and using non-accurate Ratio, only to convenient, lucidly aid illustration the utility model embodiment purpose.

The utility model provides a kind of servo cable, from the inside to the outside successively includes wrapping layer, external shielding layer 2 and outer shield Set 1, wherein in the inside of wrapping layer include power line and at least one signal wire, power line and signal wire with regular twisted Mode surround the outer surface of a gasket for packing 4 be set；It include two cable cores being arranged in a manner of pair twist in signal wire, right It twists and one layer of wrapping layer is set outside the cable core of setting, the outside of wrapping layer is internal shield 5；Conductor include conducting wire and outside it is exhausted Edge layer 6.

Specifically, conductor 3 carries out compound strand using the six class conductors that surpass of 0.08mm after sub- strand, and sub- strand stranding distance is twisted 20~25 times or so of outer diameter, the stranding distance of compound strand are 12~14 times or so of twisted outer diameter, the strand of sub- strand and compound strand It is S to can effectively promote the softness of cable, reduce the bending radius of cable to identical.

Internal shield 5 is all made of fine wire with external shielding layer 2 and weaves, and angle of weave is about 45 °, allowable error Within 5 °, stranding distance is about 10 times of twisted outer diameter when stranding；Between internal shield 5 and cable core inside it, and it is outer Be provided with Teflon between shielded layer 2 and its internal conducting wire and carry out wrapped formation wrapping layer, reduce shielded layer and its inside Cable core coefficient of friction, in cable movement or bending process can cable core of the effective protection inside it is injury-free, increase The service life of cable.

Further, equal during the pair twist process of cable core and power line and the regular twisted synthesizing cable of signal wire in signal wire Back twist operation is carried out, the burden of cable is reduced, increases the service life of cable.

In another embodiment, when the quantity of signal wire is two or more, the cable of pair twist setting in every signal wire Core stranding distance is different, for example, the stranding distance of a cable core pair twist is 10 times of twisted outer diameter, another is 12 times for being twisted outer diameter, answers Work as understanding, specific stranding distance multiple should determines according to actual conditions, and the above is only helps to illustrate and understand this programme, not as limit It is set for using.

The utility model is described in further detail below in conjunction with specific production operation, specification is chosen and suitably uses In transmission four, conducting wire of signal, every two as one group using the equipment progress pair twist with back twist function, in outside after pair twist It is carried out with Teflon band wrapped, and in outer braid internal shield after wrapped, two signal wires is produced with this scheme；If choosing The six class conducting wires that surpass of dry 0.08mm carry out sub- strand, and stranding distance is 20~25 times of twisted outer diameter, then the conducting wire that sub- strand is completed carries out Compound strand, stranding distance are 12~14 times of twisted outer diameter, are covered insulating layer in the outside of conductor using extrusion is vacuumized, with this side Case produces four and is used as power line, surrounds a center-filled rope together with signal wire later and carries out regular strand setting, and in outside Successively wrapped Teflon band forms wrapping layer, and external shielding layer is arranged outside wrapping layer, in the external using extrusion of external shielding layer Oversheath is arranged with slip PVC material in technique, wherein internal shield and external shielding layer angle of weave are about 45 °, and allowable error exists Within 5 °, stranding distance is about 10 times of twisted outer diameter when stranding；For prevent signal wire and power line twist when in use and It winds, filled with the gasket for packing being twisted in the gap between cable, to guarantee the degree of reliability of cable.

The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to The embodiment above, even if various changes can be made to the utility model, if these variations belong to the utility model claims And its within the scope of equivalent technologies, then still fall among the protection scope of the utility model.

Claims

1. a kind of servo cable, which is characterized in that from the inside to the outside successively include wrapping layer, external shielding layer and oversheath, wherein Power line and at least one signal wire are provided in the wrapping layer, the power line and the signal wire surround a center Filling is arranged in regular stranded mode；

The signal wire includes two cable cores, and the cable core is arranged in pair twist, and the stranded outer surface of cable core is provided with one Wrapping layer.

2. a kind of servo cable according to claim 1, which is characterized in that when the signal wire quantity is greater than one, The stranding distance of cable core pair twist in every signal wire is different.

3. a kind of servo cable according to claim 1, which is characterized in that an internal shield is set outside the wrapping layer, The internal shield forms for metal wire knitted, and angle of weave is 45 ° ± 5 °, and count is not less than 85%.

4. a kind of servo cable according to claim 1, which is characterized in that the cable core includes outside conductor and conductor Sheath.

5. a kind of servo cable according to claim 1, which is characterized in that the power line includes outside conductor and conductor Insulating layer.

6. a kind of servo cable according to claim 5, which is characterized in that the conductor is successively used using fine wire Son twists and the twisted setting of the mode of compound strand, and the stranding distance of the sub- strand is 20~25 times of twisted outer diameter, the stranding distance of compound strand For 12~14 times for being twisted outer diameter.

7. a kind of servo cable according to claim 6, which is characterized in that the strand of the sub- strand to the compound strand It twists identical to direction.

8. a kind of servo cable according to claim 1, which is characterized in that between the power line and the signal wire Gasket for packing is provided in gap, to prevent inner wrap and reduce friction.

9. a kind of servo cable according to claim 1, which is characterized in that the external shielding layer be metal wire knitted and At angle of weave is 45 ° ± 5 °, and count is not less than 85%.