CN215577775U - Cable for servo motor - Google Patents

Abstract

The utility model relates to a cable for a servo motor, which comprises a main cable core, a metal inner shielding layer, a middle insulating layer, a metal outer shielding layer and a rubber outer sheath, wherein the metal inner shielding layer wraps the periphery of the main cable core; the metal inner shielding layer and the metal outer shielding layer are formed by splicing a plurality of ultra-fine oxygen-free copper conductors in a close and parallel mode. Adopt the double-deck shielding structure of metal internal shield layer and metal outer shield layer, and be equipped with between the double-deck shielding structure by the insulating layer, consequently metal internal shield layer and metal outer shield layer are insulating totally and do not have the contact for every shielding action on layer is even firm, can not receive the interference of the outside external force of cable, and the inside total cable core transmission signal of cable is more stable, and excellent effect, interference killing feature is outstanding.

Description

Cable for servo motor

Technical Field

The utility model relates to the technical field of cable tools, in particular to a cable for a servo motor.

Background

In various industries, servo motors are widely used, and the servo motors are possibly used for motion control requiring accurate positioning. However, when the servo motor works, a large amount of electromagnetic wave interference signals generated by radiation are generated, so that the requirement on the electromagnetic shielding capability of the servo motor cable is high.

Electromagnetic shielding means that when electromagnetic waves are transmitted to the surface of an electromagnetic shielding material, the electromagnetic waves generated by an electromagnetic radiation field cannot enter a shielded area by reflection and absorption of the shielding material. Traditional cable adopts the winding of individual layer metallic conductor to shield, receives the structure influence, and metallic conductor has cross gap in winding process, and individual layer metallic shield effect is poor, leads to the transmission of the inside signal of cable to easily receive external disturbance.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a cable for a servo motor to improve the anti-interference capability of the cable for the servo motor.

A cable for a servo motor comprises a main cable core, a metal inner shielding layer, a middle insulating layer, a metal outer shielding layer and a rubber outer sheath, wherein the metal inner shielding layer wraps the periphery of the main cable core;

the metal inner shielding layer and the metal outer shielding layer are formed by splicing a plurality of ultra-fine oxygen-free copper conductors in a close and parallel mode.

In one embodiment, the total cable core comprises a plurality of groups of twisted pairs and a filling layer, the groups of twisted pairs are arranged around the periphery of the filling layer, and the periphery of each group of twisted pairs is covered with a twisted pair insulating layer.

In one embodiment, the twisted pair is formed by twisting two oxygen-free copper wire cores in a spiral shape.

In one embodiment, the twisted pair insulation layer is made of teflon.

In one embodiment, the filling layer is made of high-strength aramid fiber material.

In one embodiment, the medium-insulation layer is made of teflon, and the teflon completely covers the periphery of the metal inner shielding layer to separate the metal inner shielding layer from the metal outer shielding layer.

In one embodiment, the rubber outer sheath is made of a thermoplastic polyurethane material.

Above-mentioned a cable for servo motor adopts the double-deck shielding structure of metal internal shield layer and metal outer shielding layer, and is equipped with in being equipped with between the double-deck shielding structure by the insulating layer, consequently metal internal shield layer and metal outer shielding layer are insulating totally not to have the contact for every shielding effect on layer is even firm, can not receive the interference of the outside external force of cable, and the inside total cable core transmission signal of cable is more stable, and is effectual, and the interference killing feature is outstanding.

Drawings

Fig. 1 is a schematic structural diagram of a cable for a servo motor according to the present invention.

Wherein, 1, filling layer; 2. a twisted pair; 3. A metal inner shield layer; 4. a middle insulating layer; 5. a metal outer shield layer; 6. a rubber outer sheath; 7. and a total cable core.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, a cable for a servo motor includes a main cable core 7, a metal inner shielding layer 3, a middle-cover insulating layer 4, a metal outer shielding layer 5 and a rubber outer sheath 6, wherein the metal inner shielding layer 3 wraps the main cable core 7, the middle-cover insulating layer 4 wraps the metal inner shielding layer 3, the metal outer shielding layer 5 wraps the middle-cover insulating layer 4, and the rubber outer sheath 6 wraps the metal outer shielding layer 5;

the metal inner shielding layer 3 and the metal outer shielding layer 5 are formed by closely and parallelly splicing a plurality of ultra-fine oxygen-free copper conductors.

This cable adopts the double-deck shielding structure of metal internal shield layer 3 and metal external shield layer 5, 6 wraps up in the 5 outsides of metal external shield layer of rubber oversheath, the effect of protection and design has been played, every layer of shielding structure shielding rate all is greater than 90%, and by insulating layer 4 in being equipped with between the double-deck shielding structure, consequently, metal internal shield layer 3 is totally insulated and not have the contact with metal external shield layer 4, double-deck shielding structure makes the shielding effect on every layer even firm, can not receive the interference of the outside external force of cable, the inside total cable core 7 transmission signal of cable is more stable, excellent in effect, the interference killing feature is outstanding.

In one embodiment, the total cable core 7 includes a plurality of sets of twisted pairs 2 and a filler layer 1, the plurality of sets of twisted pairs 2 are disposed around the filler layer 1, and the periphery of each set of twisted pairs 2 is covered with a twisted pair insulation layer. The twisted pairs 2 are typically arranged in five groups around the periphery of the filler layer 1 to form a total cable core 7. The filling layer 1 can play a role in thickening and reinforcing the cable, and the service life is prolonged.

In one embodiment, the twisted pair 2 is formed by twisting two oxygen-free copper wire cores in a spiral shape. The core of the twisted pair 2 uses oxygen-free copper with purity of more than 99.9% as a transmission conductor, and the periphery of each group of twisted pair 2 is provided with a twisted pair insulating layer, so that internal signal transmission is not influenced mutually and is not influenced by bending and moving of a cable. Therefore, the product has stable signal transmission, less transmission loss and bending resistance.

In one embodiment, the twisted pair insulation layer is made of teflon. The Teflon cable has high temperature resistance and corrosion resistance, can generate a large amount of heat when the cable is electrified, is used as a twisted pair insulating layer to prevent spontaneous combustion, is safer and more reliable, and prolongs the service life of the product.

In one embodiment, the filling layer 1 is made of high-strength aramid fiber material. The aramid fiber material has the characteristics of high strength and high temperature resistance, and is used as the filling layer 1 of the cable to enhance the strength of the cable and prolong the service life.

In one embodiment, the intermediate-layer insulation layer 4 is made of teflon, and the teflon completely covers the periphery of the metal inner shielding layer 3 to separate the metal inner shielding layer 3 from the metal outer shielding layer 5. The two metal shielding layers are separated by the Teflon, so that the anti-interference capability of the product is enhanced.

In one embodiment, the rubber outer sheath 6 is made of a thermoplastic polyurethane material. The cable can be protected, the corrosion of the external environment to the cable is reduced, and the service life is prolonged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (7)

1. A cable for a servo motor is characterized by comprising a main cable core, a metal inner shielding layer, a middle insulating layer, a metal outer shielding layer and a rubber outer sheath, wherein the metal inner shielding layer wraps the periphery of the main cable core, the middle insulating layer wraps the periphery of the metal inner shielding layer, the metal outer shielding layer wraps the periphery of the middle insulating layer, and the rubber outer sheath wraps the periphery of the metal outer shielding layer;

the metal inner shielding layer and the metal outer shielding layer are formed by splicing a plurality of ultra-fine oxygen-free copper conductors in a close and parallel mode.

2. The cable for the servo motor as claimed in claim 1, wherein the total cable core comprises a plurality of sets of twisted pairs and a filling layer, the plurality of sets of twisted pairs are arranged around the filling layer, and the periphery of each set of twisted pairs is covered with a twisted pair insulation layer.

3. A cable for a servo motor according to claim 2, wherein the twisted pair is twisted in a helical shape of two oxygen-free copper wire cores.

4. The cable for a servo motor of claim 2, wherein the twisted pair insulation is of teflon.

5. A cable for a servo motor according to claim 2, wherein the filling layer is a high strength aramid fiber material.

6. The cable for the servo motor according to claim 1, wherein the insulated layer is made of teflon, and the teflon completely covers the periphery of the metal inner shielding layer to separate the metal inner shielding layer from the metal outer shielding layer.

7. A cable for a servo motor according to claim 1, wherein the rubber outer sheath is made of a thermoplastic polyurethane material.

Images