Flexible double-layer shielding drag chain cable

Abstract

The utility model discloses a flexible double-layer shielding drag chain cable. The cable comprises a signal line transmission unit, a control line transmission unit and an outer sheath. Wherein the signal line transmission unit consists of two groups of twisted-pair signal lines and a plurality of strands of tensile filling ropes, and is positioned in the cable core; the control line transmission unit is composed of a plurality of control lines and a plurality of filling strips and surrounds the inner and outer double-layer shielding structures. The inner and outer double-layer shielding structure is composed of an aluminum-plastic composite belt and a braid layer. And the outer sheath is made of a high-performance flexible polyvinyl chloride material. According to the utility model, the signal cable and the control cable are optimized and integrated, the product size space is reduced, the cost is saved, the selection of the flexible tensile material ensures the high quality performance and the service life of the cable, and under the conditions that the bending radius is 8D, the stroke is 500mm and the drag chain frequency is 60 times per minute, the drag chain test of 10 million times can be satisfied.

Description

Technical Field

[0001] The utility model relates to the technical field of drag chain cables, in particular to a flexible double-layer shielded drag chain cable. Background Art

[0002] With the continuous improvement of industrial automation and intelligence, as a key component connecting automation equipment and control systems, drag chain cables are becoming increasingly important. Most of the existing drag chain cables have a single function and need to be used in combination with multiple wire harnesses. Moreover, during frequent bending and dragging, problems such as internal conductor breakage, insulation layer wear, or shield layer failure are likely to occur, thus affecting the stable operation of the equipment. Therefore, those skilled in the art have provided a flexible double-layer shielded drag chain cable to solve the above problems. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a flexible double-layer shielded drag chain cable.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A flexible double-layer shielded drag chain cable includes a signal line transmission unit, a control line transmission unit, and an outer sheath; the signal line transmission unit is located in the cable core and is composed of two groups of twisted signal lines and multiple strands of tensile filling ropes. The signal line includes a signal line conductor and a signal line insulation extruded outside the conductor, and is successively wrapped with an inner layer of aluminum-plastic composite tape and an inner layer of braiding outside; a non-woven fabric is wrapped outside the inner layer of braiding; the control line transmission unit consists of multiple control lines and multiple filling strips arranged circularly outside the non-woven fabric. The control line includes a control line conductor and a control line insulation extruded outside the conductor, and is successively wrapped with an outer layer of aluminum-plastic composite tape and an outer layer of braiding from the inside to the outside; an outer sheath is covered outside the outer layer of braiding.

[0006] Preferably in this embodiment: both the signal line and the control line conductors adopt multiple strands of fine-stranded copper wires with a small single wire diameter.

[0007] Preferably in this embodiment: the signal line insulation is formed by extrusion of high-density polyethylene material.

[0008] Preferably in this embodiment: the control line insulation is formed by extrusion of semi-rigid polyvinyl chloride material.

[0009] Preferably in this embodiment: the filling rope is made of tensile fiber material.

[0010] Preferably in this embodiment: both the inner layer of aluminum-plastic composite tape and the outer layer of aluminum-plastic composite tape are composed of a rolled aluminum tape with strong ductility and a copolymer film.

[0011] Preferably in this embodiment: both the inner layer of braiding and the outer layer of braiding adopt tinned copper braided nets with a braiding density ≥ 85%.

[0012] In this embodiment, it is preferred that the filling strip is made of polyvinyl chloride material.

[0013] In this embodiment, it is preferred that the non-woven fabric is impregnated and dried with polyester staple fibers and a special emulsion for non-woven fabrics.

[0014] In this embodiment, it is preferred that the outer sheath is formed by extrusion of flexible polyvinyl chloride material.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model optimizes and integrates signal cables and control cables, reduces the product size space, and saves costs; high-flexibility materials and tensile filling ropes are used to ensure high-quality drag chain performance and service life. Under the conditions of a bending radius of 8D, a stroke of 500 mm, and a drag chain frequency of 60 times / minute, it can meet 10 million times of drag chain tests; the signal cable adopts a twisted pair structure to reduce the mutual crosstalk between wire pairs; a double-layer shielding structure design is adopted to enhance the anti-interference ability and ensure the stability of signal transmission. Brief Description of the Drawings

[0017] Figure 1 is a sectional view of the present utility model.

[0018] Brief description of the reference numerals:

[0019] 1. Outer sheath; 2. Outer layer braiding; 3. Outer layer aluminum-plastic composite tape; 4. Filling strip; 5. Control line insulation; 6. Control line conductor; 7. Non-woven fabric; 8. Inner layer braiding; 9. Inner layer aluminum-plastic composite tape; 10. Signal line insulation; 11. Signal line conductor; 12. Filling rope. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] As Figure 1 shown, this embodiment provides a flexible double-layer shielded drag chain cable, including a signal line transmission unit, a control line transmission unit, and an outer sheath 1; the signal line transmission unit is located in the cable core and is composed of two groups of twisted pair signal lines and a multi-strand tensile filling rope 12. The signal line includes a signal line conductor 11 and a signal line insulation 10 extruded outside the conductor, and an inner layer aluminum-plastic composite tape 9 and an inner layer braiding 8 are sequentially wrapped around the outside, and a non-woven fabric 7 is arranged outside the inner layer braiding.

[0022] The control line transmission unit consists of multiple control lines and multiple filler strips arranged circularly outside the non-woven fabric. The control lines include control line conductors 6 and control line insulation 5 extruded outside the conductors, and are successively wrapped with an outer aluminum-plastic composite tape 3 and an outer braided layer 2 on the outside; an outer sheath 1 is coated outside the outer braiding.

[0023] In this embodiment, both the signal cable and the control cable are stranded by multiple strands of fine-stranded copper wires, which improves the anti-bending property of the conductors while ensuring the conductor transmission performance; the signal cable adopts a twisted pair structure, reducing the mutual crosstalk between wire pairs and reducing the influence of electromagnetic interference on the signal.

[0024] In this embodiment, the signal cable and the control cable are optimized and integrated, and the cables with different functions are designed into an integrated structure, reducing the product size space and saving costs.

[0025] In this embodiment, both the inner and outer double-layer shielding structures are composed of an aluminum-plastic composite tape + a braided layer. The double-layer shielding structure design improves the overall shielding performance of the cable, ensuring that the cable can still maintain good transmission performance in an environment affected by electromagnetic interference.

[0026] In this embodiment, high-flexibility insulating materials and tensile filler ropes are used, making the cable more flexible, tensile, and wear-resistant, reducing physical damage to the cable caused by frequent movement and bending, and improving the overall performance and service life of the cable.

[0027] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0028] It should be noted that the above embodiments can be freely combined according to needs. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A flexible double-layer shielded drag chain cable, characterized in that: It includes a signal line transmission unit, a control line transmission unit, and an outer sheath (1); the signal line transmission unit is located in the cable core and is composed of two groups of twisted signal lines and multiple strands of tensile filling ropes (12). The signal lines include signal line conductors (11) and signal line insulation (10) extruded outside the conductors, and are sequentially wrapped with an inner layer of aluminum-plastic composite tape (9) and an inner layer of braiding (8) on the outside; a non-woven fabric (7) is wrapped around the inner layer of braiding; the control line transmission unit consists of multiple control lines and multiple filling strips (4) arranged circularly outside the non-woven fabric. The control lines include control line conductors (6) and control line insulation (5) extruded outside the conductors, and are sequentially wrapped with an outer layer of aluminum-plastic composite tape (3) and an outer layer of braiding (2) from the inside to the outside; an outer sheath (1) is coated outside the outer layer of braiding.

2. The flexible double-layer shielded drag chain cable according to claim 1, characterized in that: Both the signal line conductors (11) and the control line conductors (6) are made of multiple strands of finely stranded fine copper wires with small single wire diameters.

3. The flexible double-layer shielded drag chain cable according to claim 1, wherein: The signal line insulation (10) is formed by extrusion using high-density polyethylene material.

4. The flexible double-layer shielded drag chain cable according to claim 1, wherein: The control line insulation (5) is formed by extrusion using semi-rigid polyvinyl chloride material.

5. The flexible double-layer shielded drag chain cable according to claim 1, wherein: The filling ropes (12) are made of tensile fiber material.

6. The flexible double-layer shielded drag chain cable according to claim 1, wherein: Both the inner layer of aluminum-plastic composite tape (9) and the outer layer of aluminum-plastic composite tape (3) are composed of a rolled aluminum tape with strong ductility and a copolymer film.

7. The flexible double-layer shielded drag chain cable according to claim 1, wherein: Both the inner layer of braiding (8) and the outer layer of braiding (2) are made of tinned copper braided nets with a braiding density ≥ 85%.

8. The flexible double-layer shielded drag chain cable according to claim 1, wherein: The filling strips (4) are made of polyvinyl chloride material.

9. The flexible double-layer shielded drag chain cable according to claim 1, characterized in that: The non-woven fabric (7) is impregnated and dried with polyester staple fibers and a special emulsion for non-woven fabrics.

10. The flexible double-layer shielded drag chain cable according to claim 1, wherein: The outer sheath (1) is formed by extrusion using flexible polyvinyl chloride material.

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