Dust-free drag chain cable

Abstract

The utility model provides a dust-free drag chain cable. Every two adjacent power lines are bonded and connected through a polytetrafluoroethylene belt and a thermoplastic polyurethane hot melt adhesive bonding coat to form a power line unit. Every two adjacent signal lines are bonded and connected through a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive coating to form a signal line unit. Every two adjacent gigabit signal lines are bonded and connected through a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive coating to form a gigabit signal line unit. One side of the signal line unit is connected with the power line unit in a bonding mode through a polytetrafluoroethylene belt and a thermoplastic polyurethane hot melt adhesive bonding coat, and the other side of the signal line unit is connected with the gigabit signal line unit in a bonding mode through a polytetrafluoroethylene belt and a thermoplastic polyurethane hot melt adhesive bonding coat. Stable transmission of electric power and signals is guaranteed, generation of dust and bacterial particles is reduced, meanwhile, the cable has a smaller outer diameter to adapt to installation in a narrow space, and the drag chain durability of the cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a dust-free drag chain cable. Background Technology

[0002] In modern industrial production and scientific research, drag chain cables serve as a bridge connecting mobile and stationary equipment, and are widely used in automated production lines, robotic systems, precision instruments, and cleanroom environments. Especially in cleanroom environments where dust is extremely sensitive, such as in semiconductor manufacturing, biopharmaceuticals, and food processing industries, the performance requirements for drag chain cables are particularly stringent.

[0003] Traditional drag chain cables are mostly manufactured using an extrusion process. While this meets the requirements for power and signal transmission to some extent, it has revealed many problems in actual use. First, extruded cables often fail to meet long-term stable operation requirements due to material fatigue and insulation wear under frequent bending and stretching. The number of drag chain cycles is generally limited to around 20 million, which seriously affects the reliability and service life of the equipment.

[0004] Secondly, traditional extruded cables are prone to generating particulate matter such as dust and bacteria during manufacturing and use. These particulate matter not only pollute the cleanroom environment and affect product quality and safety, but may also negatively impact the performance of the cable itself, such as causing a decrease in insulation performance and unstable signal transmission.

[0005] Furthermore, the structural design of traditional cables is often relatively simple, making it difficult to meet diverse transmission needs. In application scenarios that require the simultaneous transmission of power, ordinary signals, and high-speed gigabit signals, traditional cables often need to be increased in number or their specifications changed to meet the requirements. This not only increases installation difficulty and cost, but may also occupy too much space due to excessively large cable outer diameters, affecting the overall layout and aesthetics of the equipment.

[0006] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical teaching. In the absence of clear evidence that the above information was disclosed before the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model proposes a dust-free drag chain cable, which not only possesses higher durability and stability, improving the drag chain durability of the cable, but also minimizes the generation of particulate matter such as dust and bacteria to adapt to production environments with extremely high cleanliness requirements. At the same time, the diversified transmission cable's structural design is more flexible and reasonable, resulting in a smaller outer diameter cable that is easy to install and maintain.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] On the one hand, this utility model provides a dust-free drag chain cable, comprising:

[0010] Multiple power cords are connected to form a power cord unit by bonding two adjacent power cords together with a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive.

[0011] Multiple signal lines are connected to form a signal line unit by bonding two adjacent signal lines together with a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive.

[0012] Multiple gigabit signal lines are connected to form a gigabit signal line unit by bonding two adjacent gigabit signal lines together with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive.

[0013] One side of the signal line unit is bonded to the power line unit by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive, and the other side of the signal line unit is bonded to the gigabit signal line unit by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive.

[0014] This utility model proposes a dust-free drag chain cable, which not only has higher durability and stability, improving the drag chain durability of the cable, but also minimizes the generation of particulate matter such as dust and bacteria to adapt to production environments with extremely high cleanliness requirements. At the same time, the diversified transmission cable structure design is more flexible and reasonable, allowing the cable to have a smaller outer diameter and be easy to install and maintain.

[0015] As a preferred technical solution, the power cord includes: a conductor, wherein the outer side of the conductor is provided with an ethylene-tetrafluoroethylene copolymer insulation layer, a polytetrafluoroethylene wrapping tape layer, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer from the inside to the outside to form a power cord.

[0016] As a preferred technical solution, both the signal line and the gigabit signal line include: multiple single-core wires, each single-core wire including: a conductor and an ethylene-tetrafluoroethylene copolymer insulation layer disposed on the outside of the conductor, and each pair of single-core wires is twisted together to form a twisted pair.

[0017] As a preferred technical solution, the outside of the twisted pair is provided with a polytetrafluoroethylene (PTFE) wrapping layer and a PTFE-thermoplastic polyurethane hot melt adhesive layer in sequence from the inside to the outside to form a signal line.

[0018] As a preferred technical solution, the gap between the wrapped polytetrafluoroethylene tape layer and the twisted pair is filled with a plurality of fillers.

[0019] As a preferred technical solution, the outside of the twisted pair is provided with an aluminum foil layer, a tin-plated copper alloy braided layer, a polytetrafluoroethylene (PTFE) wrapping layer, and a PTFE tape and thermoplastic polyurethane hot melt adhesive layer to form a gigabit signal line.

[0020] As a preferred technical solution, the gap between the aluminum foil layer and the twisted pair is filled with a plurality of fillers.

[0021] As a preferred technical solution, the conductor includes: multiple tin-plated copper alloy monofilaments, which are organized into at least two layers, with the monofilaments in each layer arranged concentrically and twisted together to form a layered twisted structure;

[0022] All the single filaments in the layered stranded structure are further stranded together in one go to form a conductor.

[0023] As a preferred technical solution, the tin-plated tin-copper alloy monofilament comprises: a tin-copper alloy, with a tin-plated layer on the outer side of the tin-copper alloy, the tin-copper alloy comprising the following components by weight percentage:

[0024] Copper: 93.1%–93.9%;

[0025] Tin: 5.6–6.4%;

[0026] Impurities: 0.1–0.9%;

[0027] The tin plating layer thickness is >0.3µm, and the diameter of the tin-copper alloy monofilament is 0.04-0.06mm.

[0028] On the other hand, the application of dust-free drag chain cables as described in any of the preceding claims in dust-sensitive cleanrooms.

[0029] The dust-free drag chain cable provided by this utility model has the following beneficial effects:

[0030] 1) The dust-free drag chain cable provided by this utility model not only has higher durability and stability, improving the drag chain durability of the cable; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to production environments with extremely high cleanliness requirements; at the same time, the diversified transmission cable structure design is more flexible and reasonable, making the cable have a smaller outer diameter and easy to install and maintain.

[0031] 2) This utility model provides a dust-free drag chain cable, which uses PTFE tape and thermoplastic polyurethane hot melt adhesive to bond the power line, signal line, and gigabit signal line into separate unit structures. The power line units, signal line units, and gigabit signal line units are then connected together in a unit-by-unit bonding manner using PTFE tape and thermoplastic polyurethane hot melt adhesive. This not only provides higher durability and stability, improving the drag chain's durability, but also minimizes the generation of particulate matter such as dust and bacteria, making it suitable for production environments with extremely high cleanliness requirements. Furthermore, the diversified transmission cable structure design is more flexible and rational, allowing for smaller cable outer diameters and easier installation and maintenance.

[0032] 3) The dust-free drag chain cable provided by this utility model achieves a firm connection between power lines, signal lines and gigabit signal lines by bonding the outer sheath with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive. The polytetrafluoroethylene tape has excellent chemical corrosion resistance, high temperature resistance and low coefficient of friction, while the thermoplastic polyurethane hot melt adhesive has good wear resistance, elasticity and adhesion. This bonding method not only enhances the stability of the internal components of the cable, but also improves the overall durability of the cable.

[0033] 4) The dust-free drag chain cable provided by this utility model improves the drag chain life from 20 million times to more than 50 million times. Attached Figure Description

[0034] Figure 1 A schematic diagram of the structure of a dust-free drag chain cable provided by this utility model;

[0035] The components are as follows: 1-Power cord; 2-Signal cord; 3-Gigabit signal cord; 4-Conductor; 5-Ethylene-tetrafluoroethylene copolymer insulation layer; 6-Wrapped PTFE tape layer; 7-PTFE tape and thermoplastic polyurethane hot melt adhesive layer; 8-PTFE tape and thermoplastic polyurethane hot melt adhesive outer sheath; 9-Filling material; 10-Single core wire; 11-Twisted pair; 12-Aluminum foil layer; 13-Tin-plated copper alloy braided layer; 14-Power cord unit; 15-Signal cord unit; 16-Gigabit signal cord unit. Detailed Implementation

[0036] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, this utility model provides a dust-free drag chain cable, comprising:

[0038] Multiple power cords 1, each pair of adjacent power cords 1 are bonded together by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to form a power cord unit 14.

[0039] Multiple signal lines 2, each pair of adjacent signal lines 2 are bonded together by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to form a signal line unit 15.

[0040] Multiple gigabit signal lines 3, each pair of adjacent gigabit signal lines 3 are bonded together by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to form a gigabit signal line unit 16.

[0041] One side of the signal line unit 15 is bonded to the power line unit 14 by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to bond the outer sheath 8, and the other side of the signal line unit 15 is bonded to the gigabit signal line unit 16 by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to bond the outer sheath 8.

[0042] This utility model proposes a dust-free drag chain cable, which not only has higher durability and stability, improving the drag chain durability of the cable, but also minimizes the generation of particulate matter such as dust and bacteria to adapt to production environments with extremely high cleanliness requirements. At the same time, the diversified transmission cable structure design is more flexible and reasonable, allowing the cable to have a smaller outer diameter and be easy to install and maintain.

[0043] Preferably, such as Figure 1 As shown, the power cord 1 includes: a conductor 4, and the conductor 4 is provided with an ethylene-tetrafluoroethylene copolymer insulation layer 5, a polytetrafluoroethylene wrapping tape layer 6, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 from the inside to the outside to form the power cord 1.

[0044] Conductor 4 transmits electrical energy, provides a low-resistance path, carries current, maintains electrical continuity, supports signal transmission, and provides mechanical support;

[0045] The ethylene-tetrafluoroethylene copolymer insulation layer 5 tightly wraps around the outside of the conductor 4, providing electrical insulation. The ethylene-tetrafluoroethylene copolymer insulation layer 5 has excellent electrical properties, weather resistance, and chemical stability, effectively preventing current leakage and short circuits, ensuring the safe use of the power cord. In addition, the ethylene-tetrafluoroethylene copolymer insulation layer 5 also has high tear resistance. Combined with the tin-plated copper alloy conductor 4, it effectively increases the number of drag chain cycles of the cleanroom drag chain cable, resists friction and wear generated during drag chain movement, and extends the service life of the power cord.

[0046] The polytetrafluoroethylene (PTFE) wrapping layer 6 is located outside the ethylene-tetrafluoroethylene copolymer insulation layer 5, further enhancing the insulation performance and abrasion resistance of the power cord. The PTFE wrapping layer 6 has an extremely low coefficient of friction and excellent corrosion resistance, which can effectively reduce friction and wear between cables, while preventing external environmental erosion of the cable, extending the service life of the power cord, and avoiding the problem of difficult peeling.

[0047] The PTFE tape and thermoplastic polyurethane hot melt adhesive layer 7 is the outermost layer of the power cord 1, composed of PTFE tape and thermoplastic polyurethane hot melt adhesive. It primarily serves an adhesive and protective function. The PTFE tape possesses excellent abrasion resistance, corrosion resistance, and chemical stability, resisting friction and wear during cable chain movement while preventing dust, moisture, and other contaminants from the external environment from entering the cable. The thermoplastic polyurethane hot melt adhesive offers good adhesion and elasticity, ensuring a tight connection between the power cord and other cable units or assemblies. During cable chain movement, the hot melt adhesive absorbs some vibration and impact energy, reducing relative movement between cables and resisting environmental stress, thereby extending the cable's service life.

[0048] Preferably, such as Figure 1 As shown, both the signal line 2 and the gigabit signal line 3 include: multiple single-core wires 10, each single-core wire 10 including: a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 disposed on the outside of the conductor 4, and a twisted pair 11 formed by twisting two single-core wires 10 together.

[0049] Conductor 4 transmits electrical energy, provides a low-resistance path, carries current, maintains electrical continuity, supports signal transmission, and provides mechanical support;

[0050] The twisted pair 11 structure, through the tight twisting of two single-core wires 10, forms a relatively closed electromagnetic field environment. This structure can effectively reduce the impact of external electromagnetic interference on signal transmission and ensure stable signal transmission. The two single-core wires 10 in the twisted pair 11 typically transmit differential signals, that is, one wire transmits a positive signal and the other wire transmits a negative signal. This balanced transmission method can further reduce the impact of external interference on the signal, improve the signal's anti-interference ability, and improve the stability of signal transmission.

[0051] The twisted pair 11 structure, through the twisting of two single-core wires 10, increases the overall flexibility of the cable. This flexibility allows the cable to better adapt to bending and twisting during the movement of the cable chain, reducing the risk of cable damage caused by friction and wear. The twisted structure also increases the overall strength of the cable, making it more durable. When subjected to external impact or compression, the twisted pair 11 structure can better disperse and withstand stress, protecting the internal conductor 4 and insulation layer 5 from damage and enhancing the durability of the cable.

[0052] The twisted pair 11 structure can also effectively resist external electromagnetic interference, ensuring accurate signal transmission.

[0053] Preferably, such as Figure 1 As shown, the outside of the twisted pair 11 is provided with a polytetrafluoroethylene (PTFE) tape layer 6 and a PTFE tape and thermoplastic polyurethane hot melt adhesive layer 7 in sequence from the inside to the outside to form a signal line 2.

[0054] The polytetrafluoroethylene (PTFE) wrapping layer 6 has excellent high temperature resistance and corrosion resistance, and can be used for a long time in high temperature and corrosive environments without deformation or damage. This helps to protect the twisted pair 11 from external environmental interference and damage, extend the service life of the signal line 2, and avoid the problem of its difficult peeling.

[0055] By wrapping the polytetrafluoroethylene (PTFE) tape and thermoplastic polyurethane hot melt adhesive layer 7 around the PTFE tape layer 6, a signal line with excellent comprehensive performance can be formed. This signal line not only has excellent electrical transmission performance, but also features high heat resistance, high corrosion resistance, high wear resistance and high damage resistance. It can also prevent the penetration of moisture and other harmful substances, and can meet the application requirements of various complex environments.

[0056] Preferably, such as Figure 1 As shown, the gap between the polytetrafluoroethylene wrapping layer 6 and the twisted pair 11 is filled with a plurality of fillers 9;

[0057] The filler 9 can effectively fill the gap between the polytetrafluoroethylene wrapping layer 6 and the twisted pair 11, making the overall cable structure more compact and round. This not only improves the appearance quality of the cable, but also helps to reduce the internal stress generated when the cable is bent or vibrated, thereby improving the cable's durability and stability. At the same time, the filler 9 can buffer and protect the twisted pair 11, reducing the damage to the twisted pair 11 caused by external impact or friction. This helps to extend the cable's service life and maintain its good electrical transmission performance.

[0058] Preferably, such as Figure 1 As shown, the outside of the twisted pair 11 is provided with an aluminum foil layer 12, a tin-plated copper alloy braided layer 13, a polytetrafluoroethylene wrapping tape layer 6, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 to form a gigabit signal line 3.

[0059] The aluminum foil layer 12 can effectively cancel out external electromagnetic field interference and protect the signal of the twisted pair 11 from the influence of external electromagnetic radiation. The presence of the aluminum foil layer 12 can also ensure the stability of the signal source and avoid interference and noise from the outside, thereby improving the signal transmission quality.

[0060] The tin-plated copper alloy braided layer 13 further improves the electromagnetic shielding capability of the cable, effectively blocking the intrusion of external electromagnetic interference; the tin-plated copper alloy braided layer 13 has good wear resistance and corrosion resistance, and can resist the friction and wear generated during the movement of the cable chain, as well as the erosion of the external environment.

[0061] The polytetrafluoroethylene (PTFE) wrapping layer 6 has an extremely low coefficient of friction and excellent corrosion resistance, which can effectively reduce friction and wear between cables, while preventing external environmental corrosion of the cable, extending the service life of the power cord, and avoiding the problem of difficult peeling.

[0062] By wrapping the polytetrafluoroethylene (PTFE) tape and thermoplastic polyurethane hot melt adhesive layer 7 around the PTFE tape layer 6, a signal line with excellent comprehensive performance can be formed. This signal line not only has excellent electrical transmission performance, but also features high heat resistance, high corrosion resistance, high wear resistance and high damage resistance. It can also prevent the penetration of moisture and other harmful substances, and can meet the application requirements of various complex environments.

[0063] Preferably, such as Figure 1 As shown, the gap between the aluminum foil layer 12 and the twisted pair 11 is filled with a plurality of fillers 9; the fillers 9 are located between the aluminum foil layer 12 and the twisted pair 11, and play a role in supporting and protecting the twisted pair 11. The fillers 9 can fill the gaps between the twisted pairs 11, preventing the twisted pairs 11 from being squeezed or worn against each other during movement or bending; through the action of the fillers 9, the overall structure of the cable is more stable, reducing the risk of performance degradation or damage caused by vibration or impact.

[0064] Preferably, such as Figure 1 As shown, the conductor 4 includes: multiple tin-plated copper alloy monofilaments, which are organized into at least two layers, with the monofilaments in each layer arranged concentrically and twisted together to form a layered twisted structure.

[0065] All the single filaments in the layered stranded structure are further stranded together in one go to form conductor 4;

[0066] Through layered stranding and one-time stranding, multiple tin-plated copper alloy monofilaments are tightly combined to form an integral structure. This structure makes the conductor more flexible when bending or laying, and less prone to breakage or deformation, thereby improving the conductor's flexibility and bendability.

[0067] Tin-plated copper alloy monofilaments have good electrical conductivity, and the layered stranding and one-time stranding methods can further reduce the gap between monofilaments, increase the contact area, and thus reduce the contact resistance. This helps to improve the conductivity of the conductor, allowing the current to be transmitted more smoothly.

[0068] In the layered stranded structure, each layer of monofilaments is arranged concentrically. This arrangement allows the conductor 4 to distribute stress more evenly when subjected to external forces, thereby improving the stability and reliability of the conductor 4. At the same time, the one-time stranding method also reduces the structural instability and performance degradation that may result from multiple strandings.

[0069] Tin-plated copper alloy monofilaments inherently possess certain anti-interference and electromagnetic shielding properties, while layered stranding and one-time stranding methods can further enhance these properties. This helps reduce the interference of external electromagnetic fields on the internal signal lines of conductor 4, thereby improving the quality and stability of signal transmission.

[0070] Preferably, such as Figure 1 As shown, the tin-plated copper alloy monofilament comprises: a tin-copper alloy, with a tin-plated layer on the outer side of the tin-copper alloy, the tin-copper alloy comprising the following components by weight percentage:

[0071] Copper: 93.1%–93.9%;

[0072] Tin: 5.6–6.4%;

[0073] Impurities: 0.1–0.9%;

[0074] The tin plating layer thickness is >0.3µm, and the diameter of the tin-copper alloy monofilament is 0.04-0.06mm;

[0075] Preferably, an electroplating method is used to electroplat a tin layer on the outside of the tin-copper alloy. The workpiece is immersed in an electrolyte containing tin ions. After energizing, the tin ions are reduced and deposited on the surface to form a tin plating layer.

[0076] The copper content is preferably 93.1%, 93.5%, and 93.9%. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range. Copper is the main component of the alloy, providing good conductivity and ductility. The preferred high proportion of copper ensures that the tin-copper alloy monofilament has excellent electrical transmission performance.

[0077] The preferred proportion of tin is 5.6%, 6%, and 6.4%. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range. The addition of tin significantly enhances the mechanical properties of the alloy, such as strength and hardness, and also improves the alloy's corrosion resistance and wear resistance. These improved properties are crucial for the stable operation of the cable in complex environments.

[0078] The proportion of impurities is preferably 0.1%, 0.5%, and 0.9%. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range. Controlling the impurity content within a certain range can ensure the purity and stability of the alloy.

[0079] The thickness of the tin plating layer is preferably 0.3µm, 0.4µm, and 0.5µm. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range. The tin plating layer can further enhance the corrosion resistance of the alloy, especially in humid or corrosive environments, where the tin plating layer can effectively protect the alloy from corrosion.

[0080] The diameter of the tin-plated copper alloy monofilament is preferably 0.04mm, 0.05mm, and 0.06mm. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range. This ensures that the cable has a sufficient conductor cross-sectional area to meet the requirements of electrical transmission. The smaller monofilament diameter makes the cable more flexible and easy to bend and install, with higher toughness, while also reducing the friction and wear of the cable in the cable chain.

[0081] On the other hand, the application of dust-free drag chain cables as described in any of the preceding claims in dust-sensitive cleanrooms.

[0082] like Figure 1 As shown, this utility model provides a dust-free drag chain cable, comprising:

[0083] Multiple power cords 1, each power cord 1 includes: a conductor 4, the conductor 4 having an ethylene-tetrafluoroethylene copolymer insulation layer 5, a polytetrafluoroethylene wrapping tape layer 6, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 arranged sequentially from the inside to the outside to form a power cord 1; each pair of adjacent power cords 1 are bonded together by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8 to form a power cord unit 14.

[0084] The signal line 2 includes multiple single-core wires 10, each single-core wire 10 including a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 disposed on the outside of the conductor. Each pair of single-core wires 10 is twisted together to form a twisted pair 11. The outside of the twisted pair 11 is provided with a polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 from the inside to the outside to form a signal line. The gap between the polytetrafluoroethylene tape layer 6 and the twisted pair 11 is filled with multiple fillers 9. Each pair of adjacent signal lines 2 are bonded together by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive outer sheath 8 to form a signal line unit 15.

[0085] Multiple gigabit signal lines 3, each gigabit signal line 3 comprising: multiple single-core wires 10, each single-core wire 10 comprising: a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 disposed on the outside of the conductor 4, each pair of single-core wires 10 twisted together to form a twisted pair 11, the outside of the twisted pair 11 being provided with, from the inside out, an aluminum foil layer 12, a tin-plated copper alloy braided layer 13, a polytetrafluoroethylene wrapping tape layer 6, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 to form a gigabit signal line 3, and the gap between the aluminum foil layer 12 and the twisted pair 11 is filled with multiple fillers 9, each pair of adjacent gigabit signal lines 3 being bonded together by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8 to form a gigabit signal line unit 16.

[0086] One side of the signal line unit 15 is bonded to the power line unit 14 by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to bond the outer sheath 8, and the other side of the signal line unit 15 is bonded to the gigabit signal line unit 16 by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive to bond the outer sheath 8.

[0087] This utility model proposes a dust-free drag chain cable, which not only has higher durability and stability, improving the drag chain durability of the cable, but also minimizes the generation of particulate matter such as dust and bacteria to adapt to production environments with extremely high cleanliness requirements. At the same time, the diversified transmission cable structure design is more flexible and reasonable, allowing the cable to have a smaller outer diameter and be easy to install and maintain.

[0088] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A dust-free drag chain cable, characterized in that, include: Multiple power cords are connected to form a power cord unit by bonding two adjacent power cords together with a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive. Multiple signal lines are connected to form a signal line unit by bonding two adjacent signal lines together with a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive. Multiple gigabit signal lines are connected to form a gigabit signal line unit by bonding two adjacent gigabit signal lines together with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive. One side of the signal line unit is bonded to the power line unit by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive, and the other side of the signal line unit is bonded to the gigabit signal line unit by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive.

2. The dust-free drag chain cable according to claim 1, characterized in that, The power cord includes: a conductor, the outer side of which, from the inside out, is provided with an ethylene-tetrafluoroethylene copolymer insulation layer, a polytetrafluoroethylene wrapping tape layer, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer to form a power cord.

3. The dust-free drag chain cable according to claim 1, characterized in that, Both the signal line and the gigabit signal line include: multiple single-core wires, each single-core wire including: a conductor and an ethylene-tetrafluoroethylene copolymer insulation layer disposed on the outside of the conductor, and each pair of single-core wires is twisted together to form a twisted pair.

4. The dust-free drag chain cable according to claim 3, characterized in that, The outside of the twisted pair is provided with a polytetrafluoroethylene (PTFE) wrapping layer and a PTFE tape bonded to a thermoplastic polyurethane hot melt adhesive layer to form a signal line.

5. The dust-free drag chain cable according to claim 4, characterized in that, The gap between the wrapped polytetrafluoroethylene tape layer and the twisted pair is filled with a plurality of fillers.

6. The dust-free drag chain cable according to claim 3, characterized in that, The outside of the twisted pair is provided with an aluminum foil layer, a tin-plated copper alloy braided layer, a polytetrafluoroethylene (PTFE) wrapping layer, and a PTFE tape and thermoplastic polyurethane hot melt adhesive layer to form a gigabit signal line.

7. The dust-free drag chain cable according to claim 6, characterized in that, The gap between the aluminum foil layer and the twisted pair is filled with a plurality of fillers.

8. The dust-free drag chain cable according to claim 2 or 3, characterized in that, The conductor comprises: multiple tin-plated copper alloy monofilaments, which are organized into at least two layers, with the monofilaments in each layer arranged concentrically and twisted together to form a layered twisted structure; All the single filaments in the layered stranded structure are further stranded together in one go to form a conductor.

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