Dust-free drag chain cable and application thereof

Abstract

The invention provides a dust-free drag chain cable and application thereof. 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] The present invention relates to the technical field of cables, and in particular to a dust-free drag chain cable and applications thereof. Background Art

[0002] In modern industrial production and scientific research activities, drag chain cables are widely used in automated production lines, robotic systems, precision instruments, clean room environments, etc. as a bridge connecting mobile devices and fixed devices. Especially in clean room environments that are extremely sensitive to dust, such as semiconductor manufacturing, biopharmaceuticals, food processing and other industries, the performance requirements of drag chain cables are particularly stringent.

[0003] Traditional drag chain cables are mostly manufactured using an extrusion process. Although they meet the transmission requirements of power and signals to a certain extent, they expose many problems during actual use. First, due to material fatigue and insulation wear during frequent bending and stretching movements, extruded cables often cannot meet long-term stable operation requirements. The number of drag chain operations is generally limited to about 20 million times, which seriously affects the reliability and service life of the equipment.

[0004] Secondly, traditional extruded cables are prone to produce particulate matter such as dust and bacteria during the manufacturing and use process. These particulate matter will not only pollute the clean room environment and affect product quality and safety, but may also have a negative impact on the performance of the cable itself, such as causing reduced insulation performance and unstable signal transmission.

[0005] In addition, the structural design of traditional cables is often relatively simple and difficult to meet the diverse transmission needs. In application scenarios where power, ordinary signals and high-speed gigabit signals need to be transmitted at the same time, traditional cables often need to meet the needs by increasing the number of cables or changing the cable specifications, which not only increases the difficulty and cost of installation, but may also take up too much space due to the large outer diameter of the cable, affecting the overall layout and aesthetics of the equipment.

[0006] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0007] In order to solve the above technical problems, the present invention proposes a dust-free drag chain cable and its application, which not only has higher durability and stability, and improves the durability of the cable drag chain; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high requirements for cleanliness; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] In one aspect, the present invention provides a dust-free drag chain cable, comprising:

[0010] A plurality of power cords, each two adjacent power cords are bonded and connected by bonding the outer sheaths with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to form a power cord unit;

[0011] A plurality of signal lines, each two adjacent signal lines are bonded and connected by bonding the outer sheaths with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to form a signal line unit;

[0012] A plurality of gigabit signal lines, where every two adjacent gigabit signal lines are bonded and connected by bonding the outer sheaths with polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to form a gigabit signal line unit;

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

[0014] The present invention proposes a dust-free drag chain cable and its application, which not only has higher durability and stability, and improves the durability of the cable drag chain; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high requirements for cleanliness; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain.

[0015] As a preferred technical solution, the power cord includes: a conductor, the outer side of which is provided with an ethylene-tetrafluoroethylene copolymer insulation layer, a wrapped polytetrafluoroethylene 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, the signal line and the gigabit signal line both include: multiple single-core wires, the single-core wires include: a conductor and an ethylene-tetrafluoroethylene copolymer insulation layer arranged outside the conductor, and a twisted pair formed by twisting every two single-core wires.

[0017] As a preferred technical solution, the outer side of the twisted pair is provided with a wrapped polytetrafluoroethylene tape layer and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding 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 wire pair is filled with a plurality of fillers.

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

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

[0021] As a preferred technical solution, the conductor comprises: a plurality of tin-copper alloy monofilaments, the plurality of tin-copper alloy monofilaments are organized into at least two layers, the monofilaments in each layer are arranged in a concentric manner and twisted together to form a layered twisted structure;

[0022] All the single filaments in the layered twisted structure are further twisted together at once to form a conductor.

[0023] As a preferred technical solution, the tin-copper alloy monofilament comprises: a tin-copper alloy, a tin-plated layer is provided on the outside of the tin-copper alloy, and the tin-copper alloy comprises the following components in weight percentage:

[0024] Copper: 93.1-93.9%;

[0025] Tin: 5.6-6.4%;

[0026] Impurities: 0.1~0.9%;

[0027] The thickness of the tin-plated layer is greater than 0.3 um, and the diameter of the tin-plated copper alloy monofilament is 0.04-0.06 mm.

[0028] On the other hand, the dust-free drag chain cable according to any one of the above items is used in a dust-sensitive clean room.

[0029] The dust-free drag chain cable and application thereof provided by the present invention have the following beneficial effects:

[0030] 1) The dust-free drag chain cable and its application provided by the present invention not only have higher durability and stability, and improve the durability of the cable drag chain; but also minimize the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high cleanliness requirements; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain;

[0031] 2) The present invention provides a dust-free drag chain cable and its application, wherein the power line, signal line and gigabit signal line are respectively formed into unit structures by using polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to bond the outer sheath, and the power line unit, signal line unit and gigabit signal line unit are connected together in a unit combination bonding manner by using polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to bond the outer sheath; this not only has higher durability and stability, and improves the durability of the cable drag chain; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high requirements for cleanliness; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain;

[0032] 3) The dust-free drag chain cable provided by the present invention has an outer sheath bonded by polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive to achieve a firm connection between the power line, signal line and gigabit signal line. The polytetrafluoroethylene tape has excellent chemical corrosion resistance, high temperature resistance and low friction coefficient, 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 the present invention has its drag chain times improved from 20 million times to more than 50 million times. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a dust-free drag chain cable provided by the present invention;

[0035] Among them, 1-power line; 2-signal line; 3-gigabit signal line; 4-conductor; 5-ethylene-tetrafluoroethylene copolymer insulation layer; 6-wrapped polytetrafluoroethylene tape layer; 7-polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding layer; 8-polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding outer sheath; 9-filler; 10-single core wire; 11-twisted pair wire; 12-aluminum foil layer; 13-tin-plated copper alloy braided layer; 14-power line unit; 15-signal line unit; 16-gigabit signal line unit. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, the present invention provides a dust-free drag chain cable, comprising:

[0038] A plurality of power cords 1, each two adjacent power cords 1 are bonded and connected by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer jacket 8 to form a power cord unit 14;

[0039] A plurality of signal lines 2, each two adjacent signal lines 2 are bonded and connected by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer jacket 8 to form a signal line unit 15;

[0040] A plurality of gigabit signal lines 3, each two adjacent gigabit signal lines 3 are bonded and connected by a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer jacket 8 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 via a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8, and the other side of the signal line unit 15 is bonded to the gigabit signal line unit 16 via a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8.

[0042] The present invention proposes a dust-free drag chain cable, which not only has higher durability and stability, and improves the durability of the cable drag chain; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high requirements for cleanliness; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain.

[0043] Preferably, if Figure 1 As shown, the power cord 1 comprises: a conductor 4, the outer side of the conductor 4 is provided with an ethylene-tetrafluoroethylene copolymer insulation layer 5, a wrapped polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 in sequence from the inside to the outside to form the power cord 1;

[0044] Conductors 4 transmit electrical energy, provide low resistance paths, carry current, maintain electrical continuity, support signal transmission, and provide mechanical support;

[0045] The ethylene-tetrafluoroethylene copolymer insulation layer 5 is tightly wrapped around the outside of the conductor 4 to play the role of electrical insulation. The ethylene-tetrafluoroethylene copolymer insulation layer 5 has excellent electrical properties, weather resistance and chemical stability, and can effectively prevent current leakage and short circuit, ensuring the safe use of the power cord; in addition, the ethylene-tetrafluoroethylene copolymer insulation layer 5 also has high tear strength, and is matched with the tin-plated copper alloy conductor 4 to effectively increase the number of drag chain times of the dust-free drag chain cable, resist the friction and wear generated during the drag chain movement, and extend the service life of the power cord.

[0046] The wrapped polytetrafluoroethylene tape layer 6 is located on the outside of the ethylene-tetrafluoroethylene copolymer insulation layer 5, which further enhances the insulation performance and wear resistance of the power cord. The wrapped polytetrafluoroethylene tape layer 6 has an extremely low friction coefficient and excellent corrosion resistance, which can effectively reduce the friction and wear between cables, while preventing the external environment from corroding the cable, thereby extending the service life of the power cord and avoiding the problem of peeling.

[0047] The polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 is the outermost layer on the outside of the power cord 1, and is composed of polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive. It mainly plays the role of bonding and protection. The polytetrafluoroethylene tape has excellent wear resistance, corrosion resistance and chemical stability, and can resist friction and wear during the movement of the drag chain, while preventing dust, water vapor and other pollutants in the external environment from entering the cable. Thermoplastic polyurethane hot melt adhesive has good adhesion and elasticity, and can ensure a tight connection between the power cord and other cable units or cable assemblies. During the movement of the drag chain, the hot melt adhesive can absorb a certain amount of vibration and impact energy, reduce the relative movement between cables, and resist environmental stress, thereby extending the service life of the cable.

[0048] Preferably, if Figure 1 As shown, the signal line 2 and the gigabit signal line 3 both include: a plurality of single core wires 10, the single core wires 10 include: a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 arranged outside the conductor 4, and a twisted pair 11 formed by twisting every two single core wires 10;

[0049] Conductors 4 transmit electrical energy, provide low resistance paths, carry current, maintain electrical continuity, support signal transmission, and provide mechanical support;

[0050] The twisted pair 11 structure forms a relatively closed electromagnetic field environment by tightly twisting two single-core wires 10. 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 usually transmit differential signals, that is, one wire transmits a positive signal and the other wire transmits a negative signal. This balanced transmission mode can further reduce the impact of external interference on the signal, improve the anti-interference ability of the signal, and improve the stability of signal transmission.

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

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

[0053] Preferably, if Figure 1 As shown, the outer side of the twisted wire 11 is provided with a wrapped polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene 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 wrapped polytetrafluoroethylene tape layer 6 has excellent high temperature resistance and corrosion resistance, and can be used for a long time in a high temperature and corrosive environment without deformation or damage, which helps to protect the twisted wire 11 from interference and damage from the external environment, prolong the service life of the signal line 2, and avoid the problem of its peeling difficulty;

[0055] By wrapping the polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive combined adhesive layer 7 on the outside of the wrapped polytetrafluoroethylene 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 has the characteristics of 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 in various complex environments.

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

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

[0058] Preferably, if Figure 1 As shown, the outer side of the twisted pair 11 is provided with an aluminum foil layer 12, a tin-plated copper alloy braided layer 13, a wrapped polytetrafluoroethylene tape layer 6, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 in order from the inside to the outside to form a gigabit signal line 3;

[0059] The aluminum foil layer 12 can effectively offset external electromagnetic field interference and protect the signal of the twisted pair 11 from being affected by external electromagnetic radiation; the presence of the aluminum foil layer 12 can also ensure the stability of the signal source, avoid interference and noise from the outside, and thus improve the transmission quality of the signal.

[0060] The tinned copper alloy braided layer 13 further improves the electromagnetic shielding capability of the cable and effectively blocks the intrusion of external electromagnetic interference; the tinned 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 drag chain, as well as the erosion of the external environment.

[0061] The wrapped polytetrafluoroethylene tape layer 6 has an extremely low friction coefficient and excellent corrosion resistance, which can effectively reduce the friction and wear between cables, while preventing the external environment from corroding the cables, extending the service life of the power cord and avoiding the problem of peeling;

[0062] By wrapping the polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive combined adhesive layer 7 on the outside of the wrapped polytetrafluoroethylene 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 has the characteristics of 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 in various complex environments.

[0063] Preferably, if Figure 1 As shown, the gap between the aluminum foil layer 12 and the twisted wire pair 11 is filled with a plurality of fillers 9; the fillers 9 are located between the aluminum foil layer 12 and the twisted wire pair 11, and play a role in supporting and protecting the twisted wire pair 11. The fillers 9 can fill the gaps between the twisted wire pairs 11 to prevent the twisted wire 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 due to vibration or impact.

[0064] Preferably, if Figure 1 As shown, the conductor 4 comprises: a plurality of tin-copper alloy monofilaments, the plurality of tin-copper alloy monofilaments are organized into at least two layers, the monofilaments in each layer are arranged in a concentric manner and twisted together to form a layered twisted structure;

[0065] All the monofilaments in the layered twisted structure are further twisted together at once to form a conductor 4;

[0066] Through layered twisting and one-time twisting, multiple tin-copper alloy monofilaments are tightly combined to form an integral structure. This structure makes the conductor more flexible when bending or laying, and is not easy to break or deform, thereby improving the flexibility and bendability of the conductor;

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

[0068] Each layer of monofilaments in the layered twisted structure is arranged in a concentric manner. This arrangement can make the conductor 4 more evenly disperse the stress when subjected to external force, thereby improving the stability and reliability of the conductor 4. At the same time, the one-time twisting method also reduces the structural instability and performance degradation problems that may be caused by multiple twisting.

[0069] The tin-plated copper alloy monofilament itself has certain anti-interference and electromagnetic shielding properties, and the layered twisting and one-time twisting methods can further enhance this performance, which helps to reduce the interference of external electromagnetic fields on the signal line inside the conductor 4 and improve the quality and stability of signal transmission.

[0070] Preferably, if Figure 1 As shown, the tin-copper alloy monofilament comprises: a tin-copper alloy, a tin-plated layer is provided on the outside of the tin-copper alloy, and the tin-copper alloy comprises the following components in weight percentage:

[0071] Copper: 93.1-93.9%;

[0072] Tin: 5.6-6.4%;

[0073] Impurities: 0.1~0.9%;

[0074] The thickness of the tin-plated layer is greater than 0.3 um, and the diameter of the tin-plated copper alloy monofilament is 0.04 to 0.06 mm;

[0075] Preferably, the tin-plated layer is electroplated on the outside of the tin-copper alloy by electroplating, the workpiece is immersed in an electrolyte containing tin ions, and the tin ions are reduced and deposited on the surface after power is applied to form the tin-plated layer;

[0076] The proportion of copper is preferably 93.1%, 93.5% and 93.9%. Due to space limitations and for the sake of simplicity, the present invention will no longer exhaustively list the specific point 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-plated 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 simplicity, the present invention will no longer exhaustively list the specific point 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 corrosion resistance and wear resistance of the alloy. The improvement of these properties is crucial for the stable operation of the cable in a complex environment;

[0078] The impurity content is preferably 0.1%, 0.5% and 0.9%. Due to space limitations and for the sake of simplicity, the present invention no longer exhaustively lists the specific point 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-plated layer is preferably 0.3um, 0.4um and 0.5um. Due to space limitations and for the sake of simplicity, the present invention will no longer exhaustively list the specific point values ​​included in the range. The tin-plated layer can further enhance the corrosion resistance of the alloy, especially in a humid or corrosive environment, the tin-plated 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 simplicity, the present invention no longer exhaustively lists the specific point values ​​included in the range, which can ensure that the cable has sufficient conductor cross-sectional area to meet the needs of electrical transmission; the smaller monofilament diameter makes the cable softer and more flexible, easy to bend and install, and has higher toughness, while also reducing the friction and wear of the cable in the drag chain.

[0081] On the other hand, the dust-free drag chain cable according to any one of the above items is used in a dust-sensitive clean room.

[0082] like Figure 1 As shown, the present invention provides a dust-free drag chain cable, comprising:

[0083] A plurality of power cords 1, the power cords 1 comprising: a conductor 4, the outer side of the conductor 4 is provided with an ethylene-tetrafluoroethylene copolymer insulation layer 5, a wrapped polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 in order from the inside to the outside to form the power cord 1, and every two adjacent power cords 1 are bonded and connected by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive outer layer 8 to form a power cord unit 14;

[0084] A plurality of signal wires, the signal wires 2 comprising: a plurality of single core wires 10, the single core wires 10 comprising: a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 arranged on the outside of the conductor, a twisted wire pair 11 formed by twisting every two single core wires 10, the outside of the twisted wire pair 11 being provided with a wrapped polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding layer 7 in sequence from the inside to the outside to form a signal wire, and a gap between the wrapped polytetrafluoroethylene tape layer 6 and the twisted wire pair 11 being filled with a plurality of fillers 9, and every two adjacent signal wires 2 being bonded and connected by a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding outer sheath 8 to form a signal wire unit 15;

[0085] A plurality of gigabit signal lines 3, the gigabit signal lines 3 comprising: a plurality of single core lines 10, the single core lines 10 comprising: a conductor 4 and an ethylene-tetrafluoroethylene copolymer insulation layer 5 arranged on the outside of the conductor 4, a twisted pair 11 formed by twisting every two single core lines 10, the outer side of the twisted pair 11 being provided with an aluminum foil layer 12, a tin-plated copper alloy braided layer 13, a wrapped polytetrafluoroethylene tape layer 6 and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive layer 7 in sequence from the inside to the outside to form the gigabit signal line 3, and a gap between the aluminum foil layer 12 and the twisted pair 11 being filled with a plurality of fillers 9, and every two adjacent gigabit signal lines 3 being bonded and connected by a polytetrafluoroethylene tape and 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 via a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8, and the other side of the signal line unit 15 is bonded to the gigabit signal line unit 16 via a polytetrafluoroethylene tape and a thermoplastic polyurethane hot melt adhesive outer sheath 8.

[0087] The present invention proposes a dust-free drag chain cable, which not only has higher durability and stability, and improves the durability of the cable drag chain; it also minimizes the generation of particulate matter such as dust and bacteria to adapt to the production environment with extremely high requirements for cleanliness; at the same time, the structural design of the diversified transmission cable is more flexible and reasonable, so that the cable has a smaller outer diameter and is easy to install and maintain.

[0088] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all various changes or equivalent substitutions falling within the scope of the claims of the present application are included. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope protected by the present invention.

Claims

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

2. The dust-free drag chain cable according to claim 1, characterized in that: The power cord comprises: a conductor, on the outer side of which an ethylene-tetrafluoroethylene copolymer insulation layer, a wrapped polytetrafluoroethylene tape layer and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding layer are sequentially arranged from inside to outside to form the power cord.

3. The dust-free drag chain cable according to claim 1, characterized in that: The signal line and the gigabit signal line both include: a plurality of single-core wires, wherein the single-core wires include: a conductor and an ethylene-tetrafluoroethylene copolymer insulation layer arranged outside the conductor, and a twisted pair formed by twisting every two single-core wires.

4. The dust-free drag chain cable according to claim 3, characterized in that: The outer sides of the twisted wires are provided with a wrapped polytetrafluoroethylene tape layer and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding layer in sequence from the inside to the outside 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 wire pair is filled with a plurality of fillers.

6. The dust-free drag chain cable according to claim 3, characterized in that: The outer side of the twisted pair wires is provided with an aluminum foil layer, a tin-plated copper alloy braided layer, a wrapped polytetrafluoroethylene tape layer, and a polytetrafluoroethylene tape and thermoplastic polyurethane hot melt adhesive bonding layer in sequence from the inside to the outside 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 wire 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: a plurality of tin-copper alloy monofilaments, the plurality of tin-copper alloy monofilaments being organized into at least two layers, the monofilaments in each layer being arranged in a concentric manner and twisted together to form a layered twisted structure; All the single filaments in the layered twisted structure are further twisted together at once to form a conductor.

9. The dust-free drag chain cable according to claim 8, characterized in that: The tin-plated copper alloy monofilament comprises: a copper alloy, a tin-plated layer is arranged on the outside of the copper alloy, and the copper alloy comprises the following components in weight percentage: Copper: 93.1-93.9%; Tin: 5.6-6.4%; Impurities: 0.1~0.9%; The thickness of the tin-plated layer is greater than 0.3 um, and the diameter of the tin-plated copper alloy monofilament is 0.04-0.06 mm.

10. Use of the dust-free drag chain cable according to any one of claims 1 to 9 in a dust-sensitive clean room.

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