CN212907149U

CN212907149U - Low-load robot cable

Info

Publication number: CN212907149U
Application number: CN202021508175.0U
Authority: CN
Inventors: 郭玉双; 徐晓英; 陈国军; 贾旭; 牟善英
Original assignee: Suzhou Cableplus Photoelectric Technology Co ltd
Current assignee: Suzhou Cableplus Photoelectric Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-06
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a low load robot cable, including oversheath and cable core, the oversheath wrap up in outside the cable core, the cable core includes shielding layer, cable core winding layer and many cable conductors that set gradually from outer to inner, be provided with the bank note frame in the cable core winding layer, the bank note frame includes the center tube and along a plurality of baffles of radial setting, the baffle will space uniform separation between center tube and the cable core winding layer is a plurality of line spaces of crossing, central packing set up in the center tube, the cable conductor set up in cross the line space, be provided with in the baffle along the through-hole that radially runs through it, compression spring set up in the through-hole, compression spring one end with center tube fixed connection, the other end twines layer fixed connection with the cable core. The utility model discloses can promote cable machinery turn round the performance, improve cable application life.

Description

Low-load robot cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to low load robot cable.

Background

The industrial robot is the most typical electromechanical integration digital equipment, has high technical added value and wide application range, and plays an increasingly important role in future production and social development as a supporting technology of advanced manufacturing industry and a new industry of information-based society. The foreigners in foreign countries predict that the robot industry is a new large-scale high-technology industry appearing after automobiles and computers. According to the statistics of the European economic Committee (UNECE) and the International Union of robots of the United nations, the market prospect of the world robots is good, and the world robot industry keeps a steady growth trend from the second half of the 20 th century. In the 90 s of the 20 th century, the development speed of robot products is accelerated, and the annual growth rate is about 10% on average. The growth rate in 2004 reaches 20% of the record. Among them, the Asian robot has the most prominent growth range, which is up to 43%.

Since industrial robots are generally used in applications where rapid acceleration movement and a relatively fast parallel movement rate and long-distance movement are required, rotating parts or wrists, joint parts, etc. of industrial robots are also frequently used in applications where continuous frequent twisting and bending are performed, so that extremely high demands are placed on the degree of bending, flexibility, oxidation resistance, safety, service life, maintenance cost, etc. of robot cables. The existing robot cable has unsatisfactory bending resistance and torsion resistance and short service life.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a low load robot cable can promote cable machinery turn round the performance, improve cable life.

In order to solve the technical problem, the utility model provides a low-load robot cable, including oversheath and cable core, the oversheath wrap up in outside the cable core, the cable core includes shielding layer, cable core winding layer and many cables that set gradually from outer to inner, be provided with the bank note frame in the cable core winding layer, the bank note frame includes the center tube and along a plurality of baffles of radial setting, the baffle will space uniform separation between center tube and the cable core winding layer is a plurality of line spaces of crossing, central filling member set up in the center tube, the cable conductor set up in cross the line space, be provided with in the baffle along the through-hole that radially runs through it, compression spring set up in the through-hole, compression spring one end with center tube fixed connection, the other end twines layer fixed connection with the cable core.

Furthermore, the separation frame is made of rubber materials.

Furthermore, a filling piece is arranged in each wire passing space.

Furthermore, an elastic buffer layer is arranged between the cable core and the outer sheath.

Furthermore, the elastic buffer layer is a corrugated rubber tube, and the inner side and the outer side of the elastic buffer layer are respectively connected with the outer wall of the shielding layer and the inner wall of the outer sheath in a sliding manner.

Further, the cable wire includes a cable conductor and an insulating coating extruded over the cable conductor.

Furthermore, the cable conductor is formed by twisting a plurality of strands of superfine bare copper-tin alloy wires, and the insulating coating layer is made of ethylene-tetrafluoroethylene copolymer or thermoplastic polyester elastomer.

Further, the cable core wrapping layer is a polytetrafluoroethylene film, the shielding layer is an alloy copper foil wire woven mesh sleeve with the weaving density of 80%, and the outer sheath is made of polyvinyl chloride, Polyurethane (PU) or fluororubber.

Furthermore, two cables are arranged in each wire passing space, and are twisted and matched with each other at short pitches to be untwisted.

Furthermore, the compression springs are distributed at equal intervals along the axial direction of the cable core central shaft, and the distribution distance is 5cm-8 cm.

The utility model discloses a low load robot cable compares beneficial effect with prior art is, can promote cable machinery turn round the performance, improve cable application life.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

fig. 3 is a side view of the present invention.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, a schematic cross-sectional view of a first embodiment of a low-load robot cable according to the present invention is shown. The embodiment takes a power control cable as an example, and comprises an outer sheath 1 and a cable core 2, wherein the outer sheath 1 is wrapped outside the cable core 2, the cable core 2 comprises a shielding layer 21, a cable core wrapping layer 22 and a plurality of cable wires 23 which are arranged from outside to inside in sequence, a separation frame is arranged in the cable core wrapping layer 22, the separation frame comprises a central pipe 24 and a plurality of clapboards 25 arranged along the radial direction, the partition plate 25 uniformly divides the space between the central tube 24 and the cable core wrapping layer 22 into a plurality of wire passing spaces 26, a center packing member 27 is disposed in the central tube 24, the cable 23 is disposed in the wire passing space 26, a through hole 251 is disposed in the partition plate 25 to radially penetrate therethrough, a compression spring 252 is disposed in the through hole 251, one end of the compression spring 252 is fixedly connected with the central tube 24, and the other end is fixedly connected with the cable core wrapping layer 22. The separation frame separates the inside of the shielding layer 21 of the cable core 2 into a plurality of small groups, on one hand, each cable 23 is separated, the mutual influence of magnetic fields generated in use is avoided, on the other hand, the messy winding among the cables 23 cannot be generated when the cables are bent and twisted, and the service life of the cables is prolonged. Meanwhile, due to the arrangement of the compression spring 252, when the cable is bent, the bent part of the cable is extruded, the structure can be matched with the outer sheath 1 to play a buffering role together, after the extrusion force disappears, the structure can also play a good recovery role, meanwhile, when the cable is twisted, the compression spring 252 is stretched, due to the recovery function of the spring, the twisting degree of the cable can be controlled, the resetting of the internal structure of the cable after the twisting is finished is guaranteed, and the protection effect on the cable core 2 is good. Therefore, the cable can bear long-time bending movement and large-angle twisting movement to ensure normal work, the twisting frequency can reach 2000 ten thousand times, and the service life of the cable is prolonged. Further, in this embodiment, in order to ensure that the separating frame has a certain elasticity, in this embodiment, the separating frame is made of a rubber material. Meanwhile, the compression springs 252 are distributed at equal intervals along the axial direction of the central shaft of the cable core 2, and the distribution distance is 5cm-8 cm. Ensuring that the compression spring 252 provides sufficient restoring force to ensure cable flexibility.

Further, a filling member 261 is disposed in each of the wire passing spaces 26. The position stability of the cable 23 is ensured, and meanwhile, the insulation performance and the heat insulation performance of the robot cable are improved. The cable wire 23 comprises a cable conductor 231 and an insulating coating 232, and the insulating coating 232 is extruded outside the cable conductor 231 to form protection for the cable conductor 231. In this embodiment, the cable conductor 231 is formed by twisting a plurality of ultrafine bare copper-tin alloy wires, and the insulating coating layer 232 is made of ethylene-tetrafluoroethylene copolymer or thermoplastic polyester elastomer. The flexibility of the cable is improved, the cable is suitable for the difficult problems of lightness, flexibility, high moving speed, small installation space and attractive appearance, the cable is suitable for various complex actions, the position stability during frequent switching between a bending state and a straightening state can be realized, the reliability of signal transmission is guaranteed, and the service life of the cable is prolonged.

Further, in this embodiment, the cable core wrapping layer 22 is a polytetrafluoroethylene film, the shielding layer 21 is an alloy copper foil wire woven mesh sleeve with a weaving density of 80%, and the outer sheath 1 is made of polyvinyl chloride, polyurethane PU or fluororubber. Compared with the common shielding layer 21, the shielding layer 21 made of the alloy copper foil wire material has the advantages that the bending resistance strength performance and the overall softness are synchronously improved. The outer sheath 1 has good abrasion resistance, combines hardness and elasticity, can quickly cope with various complex actions, simultaneously ensures that the outer sheath has performance requirements of low-temperature bending resistance, aging resistance, oil resistance, flame retardance and the like under the condition of high mechanical performance, and ensures the safe application and the service life of the product in severe environment.

Referring to fig. 2, for the second embodiment of the present invention, the encoder cable is used as an example in this embodiment, and for guaranteeing performance, every the cable conductor in the wire passing space 26 is provided with two, two the cable conductor adopts the short pitch transposition and cooperates the back twist. Therefore, the stress between the inner parts of the core wires can be completely released, the change of the inner structure under the influence of external force can be reduced to the greatest extent, the insulation is prevented from being damaged due to internal deformation, and the cable has better flexibility.

Referring to fig. 1 and 3, an elastic buffer layer 3 is disposed between the cable core 2 and the outer sheath 1. The elastic buffer layer 3 is a corrugated rubber tube, and the inner side and the outer side of the elastic buffer layer 3 are respectively connected with the outer wall of the shielding layer 21 and the inner wall of the outer sheath 1 in a sliding manner. The flexibility of the cable is convenient to increase, and the damage of the cable 23 inside the cable caused by the fact that the cable is tightened when being bent is avoided.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a low-load robot cable, its characterized in that, includes oversheath and cable core, the oversheath wrap up in outside the cable core, the cable core includes shielding layer, cable core winding layer and many cable conductors that set gradually from outer to inner, be provided with the branch shelf in the cable core winding layer, divide the shelf to include the center tube and along a plurality of baffles of radial setting, the baffle will space uniform separation between center tube and the cable core winding layer is a plurality of line spaces of crossing, central packing set up in the center tube, the cable conductor set up in cross the line space, be provided with in the baffle along radially running through its through-hole, compression spring set up in the through-hole, compression spring one end with center tube fixed connection, the other end twines layer fixed connection with the cable core.

2. A low-load robot cable according to claim 1, wherein the spacer is made of a rubber material.

3. A low-load robot cable according to claim 1, wherein a filler is provided in each of the wire passing spaces.

4. A low-load robot cable according to claim 1, wherein an elastic buffer layer is disposed between the cable core and the outer sheath.

5. A low-load robot cable according to claim 4, wherein the elastic buffer layer is a corrugated rubber tube, and the inner side and the outer side of the elastic buffer layer are respectively connected with the outer wall of the shielding layer and the inner wall of the outer sheath in a sliding manner.

6. A low-load robot cable according to claim 1, wherein the cable wire comprises a cable conductor and an insulating coating extruded over the cable conductor.

7. A low-load robot cable according to claim 6, wherein the cable conductor is formed by twisting a plurality of ultra-fine bare copper-tin alloy wires, and the insulating coating is made of ethylene-tetrafluoroethylene copolymer or thermoplastic polyester elastomer.

8. The low-load robot cable according to claim 1, wherein the cable core wrapping layer is a polytetrafluoroethylene film, the shielding layer is an alloy copper foil wire woven mesh sleeve with a weaving density of 80%, and the outer sheath is made of polyvinyl chloride, Polyurethane (PU) or fluororubber.

9. The low-load robot cable according to claim 1, wherein two cables are provided in each of the cable passing spaces, and the two cables are twisted at a short pitch and are untwisted in a matching manner.

10. The low-load robot cable according to claim 1, wherein the compression springs are equally spaced in the axial direction of the central axis of the cable core, and the spacing is 5cm to 8 cm.