Signal connection cable for machine tool

Abstract

The utility model relates to a signal connection cable for a machine tool, which comprises a plurality of signal wire units, and each signal wire unit comprises an insulating layer, a wrapping layer and a plurality of signal wire cores. All the signal line units are located in a shielding layer, the outer side of the shielding layer is coated with an inner protection layer, the outer side of the inner protection layer is coated with an armor layer, and the outer side of the armor layer is coated with an outer protection layer; the outer side of each signal wire core is coated with an insulating layer, the outer side of the outer protective layer is uniformly provided with a plurality of wear-resistant rubber strips along the radial direction, each wear-resistant rubber strip is parallel to the axial direction of the outer protective layer, and the signal cable is easy to bend and has good shielding performance and wear resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a signal connection cable for machine tools. Background Art

[0002] Machine tools refer to machines that manufacture machines and machinery. Machine tools play a major role in the construction of national economic modernization. Machine tools include lathes, boring machines, milling machines, planers, and machining centers. Signal cable is a signal transmission tool. Generally, the signal transmitted by signal cables is very small. In order to avoid signal interference, there is a shielding layer on the outside of the signal cable to prevent interference signals from entering the inner conductor and reducing the loss of the transmission signal. Signal cables are often used to transmit electrical signals on machine tools. The cables on machine tools usually need to move with the machine tool components, so the cables need to have good flexibility, wear resistance, and shielding capabilities. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a signal connection cable for a machine tool in view of the above shortcomings.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A signal connection cable for a machine tool comprises a plurality of signal line units, each of which comprises an insulating layer, a wrapping layer and a plurality of signal line cores; all the signal line units are located in a shielding layer, the outer side of the shielding layer is coated with an inner protective layer, the outer side of the inner protective layer is coated with an armor layer, and the outer side of the armor layer is coated with an outer protective layer; the outer side of each of the signal line cores is coated with an insulating layer, the outer side of the outer protective layer is uniformly provided with a plurality of wear-resistant rubber strips along the radial direction, and a single wear-resistant rubber strip is parallel to the axial direction of the outer protective layer.

[0006] Furthermore, the signal wire core is a multi-strand twisted oxygen-free copper wire, and the cross-sectional area of ​​the signal wire core is 25mm 2 -36mm 2 .

[0007] Furthermore, the number of the signal line units is no more than ten, and each signal line unit includes 2-4 signal line cores.

[0008] Furthermore, the wrapping layer is formed by wrapping a polyester tape, and the wrapping overlap rate of the polyester tape is 10%-15%.

[0009] Furthermore, the wrapping overlap rate of the polyester tape is 12%.

[0010] Furthermore, the armor layer is formed by wrapping a copper tape, and the thickness of the copper tape is 0.2 mm.

[0011] Furthermore, the number of the wear-resistant rubber strips is four, the cross-sectional shape of the wear-resistant rubber strips is crescent-shaped and they are attached to the surface of the cable in an inverted manner, so that the surface of the cable is smooth.

[0012] Furthermore, there are intervals between the four wear-resistant rubber strips to facilitate cable bending, and the thickness of the wear-resistant rubber strip at its thickest point is no more than 2 mm.

[0013] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0014] The utility model provides multiple signal wire cores and limits the cross-sectional area of ​​the signal wire cores, so that the cable as a whole is easy to bend; by limiting the wrapping overlap rate of the polyester tape of the wrapping layer, the overall mechanical strength of the cable is appropriate, and the cable is easy to bend; by providing a copper tape armor layer, the mechanical strength of the cable is maintained while forming a double shield with the shielding layer, so that the signal cable has good shielding properties; by providing four wear-resistant rubber strips on the outside of the outer sheath, the wear resistance of the data cable is enhanced, and there are gaps between the four wear-resistant rubber strips, so that the cable is easy to bend from the gaps; by providing the wear-resistant rubber strips in a crescent shape, the cable surface is smooth and easy to use.

[0015] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Signal wire core; 2. Insulation layer; 3. Wrapping layer; 4. Shielding layer; 5. Inner sheath; 6. Armor layer; 7. Outer sheath; 8. Rubber insulation layer. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] like Figure 1As shown, a signal connection cable for machine tools includes multiple signal line units, each of which includes an insulating layer 2, a sheath 3 and multiple signal wire cores 1; all signal line units are located in a shielding layer 4, the outer side of the shielding layer 4 is coated with an inner protective layer 5, the outer side of the inner protective layer 5 is coated with an armor layer 6, and the outer side of the armor layer 6 is coated with an outer protective layer 7; the outer side of each of the signal wire cores 1 is coated with an insulating layer 2, and the outer side of the outer protective layer 7 is uniformly provided with multiple wear-resistant rubber strips 8 along the radial direction, and a single wear-resistant rubber strip 8 is axially parallel to the outer protective layer 7.

[0022] As an implementation method, the signal wire core 1 is a multi-strand twisted oxygen-free copper wire, and the cross-sectional area of ​​the signal wire core 1 is 25 mm 2 -36mm 2 .

[0023] As an implementation manner, the number of the signal line units is no more than ten, and each signal line unit includes 2-4 signal line cores 1 .

[0024] As an embodiment, the wrapping layer 3 is formed by wrapping a polyester tape, and the wrapping overlap rate of the polyester tape is 10%-15%.

[0025] As an embodiment, the wrapping overlap rate of the polyester tape is 12%.

[0026] As an implementation manner, the armor layer 6 is formed by wrapping a copper tape, and the thickness of the copper tape is 0.2 mm.

[0027] As an implementation manner, the number of the wear-resistant rubber strips 8 is four, the cross-sectional shape of the wear-resistant rubber strips 8 is crescent-shaped and is invertedly attached to the surface of the cable, so that the surface of the cable is smooth.

[0028] As an implementation manner, there are intervals between the four wear-resistant rubber strips 8 to facilitate cable bending, and the thickness of the wear-resistant rubber strip 8 at the thickest part is no more than 2 mm.

[0029] The working process of the utility model is as follows: when the machine tool is working, the signal cable bends or stretches as the machine tool components move. When the signal cable touches the machine tool, the wear-resistant rubber strips 8 rub against the machine tool components, and the signal cable bends along the gaps between the wear-resistant rubber strips 8. After the wear-resistant rubber strips 8 are consumed, the outer sheath 7 rubs against the machine tool components. The polyurethane rubber of the outer sheath 7 also has good wear resistance and can protect the internal structure of the cable well.

[0030] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A signal connection cable for machine tools, characterized in that: The invention comprises a plurality of signal line units, each of which comprises an insulating layer (2), a wrapping layer (3) and a plurality of signal line cores (1); all the signal line units are located in a shielding layer (4); the shielding layer (4) is coated with an inner protective layer (5) on the outside, the inner protective layer (5) is coated with an armor layer (6) on the outside, and the armor layer (6) is coated with an outer protective layer (7) on the outside; each of the signal line cores (1) is coated with an insulating layer (2) on the outside, and a plurality of wear-resistant rubber strips (8) are uniformly arranged radially on the outside of the outer protective layer (7), and each wear-resistant rubber strip (8) is axially parallel to the outer protective layer (7).

2. A signal connection cable for machine tools according to claim 1, characterized in that: The signal wire core (1) is a multi-strand twisted oxygen-free copper wire, and the cross-sectional area of ​​the signal wire core (1) is 25 mm 2 -36mm 2 .

3. A signal connection cable for machine tools according to claim 1, characterized in that: The number of the signal line units is no more than ten, and each signal line unit comprises 2-4 signal line cores (1).

4. A signal connection cable for machine tools according to claim 1, characterized in that: The wrapping layer (3) is formed by wrapping a polyester tape, and the wrapping overlap rate of the polyester tape is 10%-15%.

5. A signal connection cable for machine tools according to claim 4, characterized in that: The polyester tape wrapping overlap ratio is 12%.

6. A signal connection cable for machine tools according to claim 1, characterized in that: The armor layer (6) is formed by wrapping a copper tape, and the thickness of the copper tape is 0.2 mm.

7. A signal connection cable for machine tools according to claim 1, characterized in that: The number of the wear-resistant rubber strips (8) is four, the cross-sectional shape of the wear-resistant rubber strips (8) is crescent-shaped and is attached to the surface of the cable.

8. A signal connection cable for machine tools according to claim 7, characterized in that: The thickness of the wear-resistant rubber strip (8) at its thickest point is no more than 2 mm.

Images