70results about "Manufacturing extensible conductors/cables" patented technology

The invention relates to the technical field of aluminum alloy wire processing, and particularly discloses a high-modulus high-conductivity heat-resistant aluminum alloy material, an aluminum wire, a preparation method and a power transmission cable. According to the high-modulus, high-conductivity and heat-resistant aluminum alloy material provided by the invention, the nanoscale TiB2 particles and the micron-sized SiC particles are compounded in the aluminum alloy powder, a dual-reinforcement system is constructed, and the mechanical property and the electrical property of an aluminum conductor are synergistically improved. The invention further provides a preparation method of the high-modulus and high-conductivity heat-resistant aluminum conductor. According to the process, a multi-stage coupling plastic processing technology of hot extrusion, continuous rolling, drawing and surface treatment is adopted. The grain structure is refined through the dynamic recrystallization effect in the series of machining processes, oxidation film defects on the surface and in the structure are damaged through plastic deformation, the rigidity and the conductivity of the aluminum wire are further optimized, and the technical bottleneck that high modulus, high conductivity and heat resistance of traditional aluminum alloy are difficult to consider at the same time is effectively solved.

The invention relates to the technical field of cable preparation, in particular to a preparation process of a high-flexibility composite drag chain cable, and the process comprises the steps: S1, enabling a plurality of strands of metal wires to be twisted and wound into a cable conductor; s2, adding an insulating layer raw material according to a weight ratio to prepare an insulating layer sizing material; and S3, the surface of a cable conductor is coated with the insulating layer sizing material through a core wire insulation extruder, traction and take-up treatment is conducted on the cable obtained after coating treatment, a cable finished product is obtained, and the traction speed in the traction and take-up process is controlled based on changes of the speed and the temperature in the traction and take-up process. According to the method, the hysteresis influence of the screw speed of the extruder and the head temperature on the extrusion speed is considered, so that the problem that the traction speed is not timely responded in a traditional method is solved, and the insulativity and flexibility of the core wire in the composite drag chain cable are improved.

A wire includes: a core; and a shell that covers an outer periphery of the core, wherein the core includes silver, the shell includes 33.0 mass % or more and 37.0 mass % or less of nickel, 9.0 mass % or more and 10.5 mass % or less of molybdenum, 19.0 mass % or more and 21.0 mass % or less of chromium, 0.5 mass % or more and 1.2 mass % or less of titanium, and a remainder including cobalt and an inevitable impurity, a diameter of the wire is 100 μm or less, and an elongation of the wire is 12% or more.

The invention discloses a method for manufacturing a polyamide-imide high-heat-resistance enameled wire for a new energy automobile, and the method comprises the following steps: 1), carrying out the surface treatment of a conductor, and improving the surface roughness; 2) preparing insulating paint liquid; (3) coating the insulating paint liquid obtained in the step (2) on the surface of the conductor obtained in the step (1) for multiple times; and 4) carrying out sectional stretching treatment to finally obtain the polyamide-imide high-heat-resistance enameled wire. The polyamide-imide resin, the solvent, the epoxy modifier, the nano composite powder, the silane coupling agent and the dicumyl peroxide are compounded to prepare the insulating paint liquid, and the insulating paint liquid is coated on the conductor for multiple times, so that a compact layer can be formed on the conductor, and the insulating paint liquid has the advantages of high heat resistance, high thermal stability, high mechanical property and the like; the extreme requirements of the new energy automobile driving motor on high temperature resistance, high-frequency pulse voltage resistance and refrigerant corrosion resistance of the enameled wire are met, the manufacturing steps are simple, and the enameled wire is suitable for industrial popularization and application.

The invention relates to the field of cables, and discloses a flame-retardant extruded and insulated low-voltage power cable, which comprises a conductor core, an insulating layer, a filling layer, an inner sheath layer, an armor layer and an outer sheath layer, and is characterized in that the sheath layer is made of low-density polyethylene, ethylene propylene diene monomer, ethylene-tetrafluoroethylene copolymer, modified halloysite nanotubes, modified ammonium polyphosphate and auxiliaries; the modified halloysite nanotube is prepared by loading titanium dioxide on the surface of a halloysite nanotube by using a sol-gel method and then grafting octa-aminopropyl polyhedral oligomeric silsesquioxane; the modified ammonium polyphosphate is prepared by grafting a functional silane coupling agent prepared by reacting a cyclotriphosphazene derivative with 3-chloropropyltrimethoxysilane with polysiloxane-coated ammonium polyphosphate, and the cyclotriphosphazene derivative is prepared by reacting 3-amino-1, 2, 4-triazole with hexachlorocyclotriphosphazene and then coordinating with cobalt ions by adopting a hydrothermal method. Therefore, the material is endowed with good mechanical properties, ultraviolet resistance, heat and wear resistance, flame retardance and antibacterial activity.

The invention discloses a submicro-scale self-supporting metal grid flexible transparent electrode and a manufacturing method thereof, and belongs to the technical field of flexible electrode manufacturing. The manufacturing method provided by the invention comprises the following steps: preparing a printing solution, wherein the printing solution contains a polymer, silver nitrate and a solvent; printing a submicro-scale polymer-based seed layer grid structure on the hydrophobic substrate by using an electric field driven spray deposition micro-nano 3D printing technology; performing steam reduction on the surface of the polymer-based seed layer grid structure, and then depositing metal through chemical plating to form a metal grid structure; and stripping from the surface of the hydrophobic substrate. According to the invention, simple, efficient and low-cost manufacturing of the submicro-scale, ultrathin, soft, breathable and substrate-support-free self-supporting metal grid flexible transparent electrode with high photoelectric performance is realized, and the electrode has general applicability in the application fields of electronic skin, flexible sensors, transparent wearable and portable electronic equipment and the like.

The invention relates to the technical field of cable processing, in particular to continuous annealing and wire drawing equipment for wire and cable manufacturing, which comprises an operation frame, a wire inlet hole with a conical side section is formed in the center of one side surface, far away from an opening, of the operation frame, and two groups of transmission rollers are rotatably connected to one end, close to the wire inlet hole, in the operation frame; a winding reel is arranged at the opening end in the operation frame, a first motor is arranged at a rotating shaft at the rear end of the winding reel, and a heat preservation mechanism is arranged in the center in the operation frame. On the basis of uniformly heating the outer wall of the drawn cable copper wire, the situation of overheating softening caused by direct contact between the cable copper wire and a heating part can be reduced, and meanwhile, the cable copper wire after heating and before cooling is straightened to ensure that the cable copper wire is kept in a straight state before cooling and shaping, so that the quality of the cable copper wire is improved. Therefore, the cable copper wire drawing annealing treatment efficiency is improved.

The invention provides gallium-based liquid metal conductive paste with a strain insensitive characteristic and a preparation method and application thereof, and belongs to the technical field of electronic circuits. The gallium-based liquid metal conductive paste is prepared by mixing inorganic particles containing lone pair electrons with liquid metal, enabling the inorganic particles and the liquid metal to generate mechanochemical action under strong shearing force, and the paste is in a liquid state, a semi-solid paste state or a solid powder state with low surface tension according to different adding proportions of the inorganic particles. According to the invention, the conductive slurry is applied to various substrates through different processes, and strain-insensitive stretchable conductors with stretchability and high conductivity, such as liquid metal sheath core microfibers and liquid metal ion gel, are prepared. According to the invention, the tensile conductor prepared by adopting the gallium-based liquid metal conductive paste has the resistance change rate change of less than 15% under 200% strain, and the initial resistance is less than 1 ohm.

The application discloses a kind of cable winding flexible shield preparation equipment, including support seat, cable drag mechanism, support cylinder, upper rotary cylinder, lower rotary cylinder, first support frame, second support frame, first hoist mechanism, second hoist mechanism, bevel gear, mounting seat, third servo motor, bevel gear, the support seat is equipped with the cable drag mechanism for dragging cable, and fixed with vertical support cylinder, the support cylinder is cylindrical, and coaxial rotation connects upper rotary cylinder and lower rotary cylinder.This application is used, the cable that needs to be wrapped shielding layer is introduced from top to bottom to cable drag mechanism, using cable drag mechanism to controllable drag cable, in this process, control third servo motor rotation, to drive upper rotary cylinder and lower rotary cylinder to carry out opposite direction rotation, and control first hoist mechanism and second hoist mechanism work, i.e.can be orderly released to shielding wire, so that two shielding wires are helical and interwound.

The invention relates to the technical field of cable production, in particular to a special-shaped conductor medium-voltage cable and production device.The production device comprises a wire drawing machine, the wire drawing machine comprises a rack and a wire drawing bin arranged on the top face of the rack, a plurality of forming mechanisms are arranged in the wire drawing bin in the drawing direction of a special-shaped single wire, and each forming mechanism comprises forming dies which are symmetrically distributed up and down; the two forming dies are slidably connected into the wire drawing bin in the vertical direction, and the two forming dies can be mutually enclosed to form a die hole matched with the shape of the special-shaped monofilament. The blowing mechanism is arranged on the forming mold, so that the smaller the mold hole defined by the forming mold is, the larger the opening of the blowing opening through the transmission mechanism is, and therefore more air cools the special-shaped monofilament penetrating through the mold hole, the cooling efficiency is improved, and the situation that the small special-shaped monofilament is snapped due to too high temperature is avoided; the influence on equipment operation is avoided, and the cable production efficiency is improved.

A method for manufacturing a shielded ribbon cable for higher power ratings is described. In addition to conductors for direct or alternating currents arranged in several superimposed layers, the ribbon cable has shielding surfaces at the top and bottom, as well as shielding conductors running laterally in the layers.

The utility model relates to an enameled wire production equipment technical field especially relates to a kind of enameled wire painting wire rod cooling traction device, and multiple wire rod cooling traction devices are connected with factory centralized cooling equipment respectively;The wire rod cooling traction device includes cooling traction roller shaft and multiple wire guide wheels, and multiple wire guide wheels are used to guide enameled wire to bypass cooling traction roller shaft;Cooling liquid cavity is arranged in the cooling traction roller shaft, one end of the cooling traction roller shaft is provided with swivel joint, the cooling liquid cavity is connected with the swivel joint, and the swivel joint is connected with cooling water inlet pipe and outlet pipe, and the cooling water inlet pipe and the outlet pipe are connected with the factory centralized cooling equipment respectively. It has the characteristics that enameled wire cooling effect is good and equipment is simple and easy to maintain.

The invention discloses a low-loss ultrathin high-speed transmission FFC wire rod and a preparation method thereof. The FFC wire rod is a low-loss medium system formed by fluorinated polyimide, a liquid crystal polymer, fine PTFE powder and SiO2 / Al2O3 microspheres subjected to surface fluorination treatment, and comprises an ultra-low profile copper foil conductor layer, an embedded patterned grounding grid layer, a top shielding layer and a protective layer. The embedded grounding grid is formed through precise casting and photoetching electroplating, the trapezoidal cross section differential line pair is formed through acid etching, and the embedded grounding grid is manufactured through the technologies of multi-layer hot-pressing lamination, online impedance detection and compensation correction and the like. The total thickness of the wire rod is less than or equal to 0.10 mm, the differential characteristic impedance is 85 + / -5 ohm or 100 + / -5 ohm, the insertion loss is less than or equal to 0.79 dB / in under 10GHz, the near-end crosstalk is less than or equal to-35dB, the bending life is greater than or equal to 1 million times, and the shielding effectiveness is greater than or equal to 60dB, so that the problems that the existing FFC wire rod is large in loss, large in impedance fluctuation and serious in crosstalk under high frequency and is poor in mechanical reliability under an ultrathin structure are solved.

The purpose of the present invention is to provide an easily fabricated wire harness having a structure in which the outer periphery of a wire bundle is covered with a coating material and wound in a spiral in a partial region along the longitudinal direction, and a manufacturing method capable of manufacturing such a wire harness. The present invention provides a wire harness 1 comprising an electric wire bundle 2 in which a plurality of electric wires 20 are gathered, and a tubular coating material 3 covering the outer periphery of the electric wire bundle 2 in a covering area 11 corresponding to a partial area along the axial direction of the electric wire bundle 2. At least a part of the covering area 11 is a spiral part 13 in which the combination of the electric wire bundle 2 and the coating material 3 is wound in a spiral. The coating material 3 is formed into a spiral in the spiral part 13.

A winding device for a deep brain electrode lead wire, comprising a wire winding device, a wire outlet device and a wire outlet driving device mounted on the wire winding device. The wire outlet device is slidably mounted on the wire winding device. The wire winding device drives the motor wire to rotate, facilitating the wire on the wire outlet device to be wound around the motor wire. The wire outlet driving device drives the wire outlet device to translate uniformly to ensure the winding quality. The wire winding device includes a wire rotation mechanism, a wire driven mechanism and a linkage mechanism. The wire rotation mechanism and the wire driven mechanism are arranged oppositely. The two ends of the motor wire are clamped by the wire rotation mechanism and the wire driven mechanism. The linkage mechanism is respectively connected to the wire rotation mechanism and the wire driven mechanism, so that the wire driven mechanism rotates simultaneously with the wire rotation mechanism, preventing a rotational speed difference from occurring at the two ends of the motor wire during the winding process, thereby preventing the motor wire from being twisted against each other and ensuring the quality of the motor wire during the winding process.

The invention provides a nano metal conductive network / polymer substrate flexible transparent electrode based on coordination bonding and a preparation method thereof, and relates to the field of flexible electronic materials.The method comprises the steps that S1, the surface of a hydrophobic substrate is coated with metal nanowire dispersion liquid, and a micron-sized conductive network is formed through self-assembly by means of the coffee ring effect; s2, preparing a substrate solution for forming a coordination bonding effect with a metal material; and S3, embedding the micron-sized conductive network in the step S1 into the substrate solution prepared in the step S2, and drying and stripping to form the embedded electrode. The method is simple in process and suitable for large-area preparation, and the obtained electrode has the advantages of being high in visible light transmittance, low in sheet resistance, excellent in mechanical stability, rapid in thermal response and the like. The flexible transparent electrode can replace traditional FTO, ITO and other brittle conductive substrates, and has wide application prospects in the fields of flexible solar cells, light-emitting displays, wearable optoelectronic devices and the like.

Disclosed in the present invention are a coil-strip-shaped automatic-magnetic-attraction free-stretching data cable in a horizontal direction, and a preparation method therefor and the application thereof. The data cable sequentially comprises, from inside to outside, an innermost flexible covered object, an intermediate flexible permanent-magnet magnetic cladding layer and an outermost flexible sheath layer, which are tightly connected. The preparation method therefor comprises the following steps: step A, performing extrusion molding; and step B, first, performing magnetization in a 180-degree constant magnetic field orientation in a north-south direction, so as to form a preliminary coil-strip-shaped structure in a horizontal direction, and then performing magnetization again to form a coil-strip-shaped automatic-magnetic-attraction free-stretching data cable in the horizontal direction. The present application is aimed at solving the problem in the prior art of insufficient automatic coiling and magnetic attraction of a data cable. By means of improving a magnetization mode, the present application makes a magnetization operation safe and reliable, and is environmentally friendly, human-health-friendly, easily implementable and mass-production-ready. The present application enables fuller utilization of the magnetic properties of a samarium-iron-nitrogen magnet, a magnetocrystalline anisotropy field of which significantly exceeds other permanent magnet materials, thereby making the data cable resistant to high temperature, corrosion and demagnetization, providing distinct advantages, and breaking through the limitation of relying on an increased magnetic layer thickness to meet attraction force requirements of the data cable.

This invention proposes a core fabrication process and a cable. The core fabrication process involves softening annealing to ensure uniform distribution of the various components of the internal material, preventing breakage during drawing. Stress-relief annealing then restores the core's toughness, maintaining good mechanical properties and a stable shape, thus achieving a high compression ratio core. The cable made from the core processed using this process includes a core with an inner insulation layer. An outer insulation layer, comprising an inner layer and an outer layer, is provided outside the inner insulation layer. The inner layer is bonded to the inner insulation layer, and the outer layer is located outside the inner layer. A protective layer is provided on the outer side of the outer layer.

This application provides a graphene-bonded silver alloy wire and its preparation process, belonging to the field of bonding wire technology for packaging. The preparation process of this graphene-bonded silver alloy wire comprises the following components by weight percentage: graphene content 1000-4500 ppm; Pd content 10000-20000 ppm; the balance being Ag and impurities. With the addition of low gold and palladium content, the graphene-bonded silver alloy wire effectively improves the susceptibility of bonded silver alloy wire to moisture and sulfur / chlorine corrosion, thus migrating silver ions. It achieves the corrosion resistance and silver ion migration inhibition effects of traditional bonded silver alloy wires, significantly reducing material costs and possessing significant scientific research value and application prospects. Furthermore, the circular limiting ring seat, positioning groove, and conical pressure block of the high-tension wire drawing machine in the preparation process enable the high-tension wire drawing machine to quickly fix the I-beam and the wire, greatly improving production efficiency.

An automatically and vertically coiled, ribbon-shaped and freely extendable / retractable magnetic attraction data cable, a preparation method therefor and a use thereof. The data cable sequentially comprises, from inside to outside, a flexible coated object serving as a core, a middle flexible permanent-magnetic coating layer and an outer flexible sheath layer which are tightly bonded. The preparation method for the data cable comprises the following steps: step A, performing extrusion molding; and step B, first performing pre-magnetization to form a vertically coiled ribbon shape, orienting under a 180° constant magnetic field in the north-south direction, and finally performing full magnetization. The problem in the prior art of inadequate magnetic attraction in automatic coiling of data cables is solved, so that the magnetic properties of samarium-iron-nitrogen magnets exhibiting a magnetocrystalline anisotropy field significantly higher than that of other permanent magnet materials can be better utilized, and the magnetization mode is more user-friendly; moreover, the data cable has significant advantages in terms of temperature resistance, corrosion resistance and demagnetization resistance, and achieves the breakthrough of meeting the magnetic attraction requirements of data cables by means of magnetic layer thickening.

According to the flexible electrode provided by the invention, the hydrophobic layer is formed on the special-shaped substrate and the substrate with the contact angle range of 24.1-55 degrees with the silver nanowire dispersion liquid, then the silver nanowire dispersion liquid is uniformly dispersed, the flexible electrode with a honeycomb microstructure is formed, no cross point exists between the silver nanowires, and the flexible electrode has good electrochemical performance. The flexible electrode is prepared on the curved surface or non-centrosymmetric planar substrate by the silver nanowires, and the electrothermal stability of the flexible electrode is greatly improved.

Disclosed are a connection line structure and a forming method thereof. The connection line structure comprises a passivation layer, a metal layer, and a protective layer, the metal layer is arranged on the passivation layer, and the protective layer is arranged on the metal layer. In the present application, a simple single-layer wiring design may be utilized, and a multi-layer three-dimensional wiring design may also be utilized to implement high speed transmission, a MEMS process allows for design of a connection line in a straight or bent layout, a connection line of a bent layout is flexible, and better compatibility is achieved.

The present application relates to the technical field of flexible fireproof cable production, in particular to a flexible fireproof cable production line, which comprises a mica tape wrapping device, the mica tape wrapping device comprises a mounting seat, one side of the mounting seat is rotationally connected with a rotating seat, the outer wall of the rotating seat is fixedly connected with two mounting shafts, the end of the mounting shafts away from the rotating seat is provided with a supporting assembly, the supporting assembly is rotationally assembled with a winding roller, and the winding roller is wound with a mica tape; the middle part of the side wall of the mounting shaft is provided with a mounting through hole, and the middle part of the mounting through hole is connected with an adjusting assembly. The present application can ensure that the mica tape is always in the best taut winding state when winding the mica tape, overcome the defects of insufficient thickness and large density of the fireproof mud layer when the mica tape is wrapped too tightly, and overcome the problem of easy dislocation and looseness when the mica tape is wrapped loosely.

A method for manufacturing a shielded ribbon cable for higher power ratings is described. In addition to conductors for direct or alternating currents arranged in several superimposed layers, the ribbon cable has shielding surfaces at the top and bottom, as well as shielding conductors running laterally in the layers.

The utility model relates to a bare copper wire cooling device which comprises a shell, a cooling assembly, a wiping assembly and a drying assembly are arranged in the shell, a first guide wheel, a second guide wheel and a plurality of turning guide wheels are further arranged in the shell, and a copper wire is sequentially wound around the first guide wheel and the turning guide wheels from right to left. And then the copper wire sequentially penetrates through the wiping assembly and the drying assembly from right to left and then is wound around the second guide wheel, the cooling assembly comprises a cooling pond, a liquid inlet pipe and a liquid discharging pipe, cooling liquid is contained in the cooling pond of a U-shaped opening structure, and a temperature sensor is arranged at the bottom in the cooling pond. According to the copper wire cooling device, cooling liquid can be stirred, copper wires can make full contact with the cooling liquid, and the cooling uniformity of the copper wires is better; through the wiping assembly, the left sponge block and the soft right sponge block, the residual cooling liquid on the copper wire can be wiped doubly; and the wiped copper wire can be finally dried through the drying assembly, and the drying effect is more uniform.

Method for manufacturing a charging cable with a conductor sheath in which at least two insulated electrical conductors are arranged, and at least one first spiral conductor section and one second spiral conductor section, the method comprising the following steps: - Winding a first section of the charging cable in a first winding direction, so that a first spiral is formed, the first spiral forming the first spiral conductor section, - Tempering of the first spiral according to an initial tempering profile, - Cooling of the first spiral after an initial cooling profile, - Winding a second section of the charging cable in a second winding direction, so that a second spiral is created, the second spiral forming the second spiral section of the cable, - Arranging the first spiral conductor section and the second spiral conductor section relative to each other such that, in a rest position, the first spiral conductor section and the second spiral conductor section are aligned planarly in planes parallel to each other, wherein the windings of the first spiral conductor section and the second spiral conductor section preferably lie flush against each other, - Tempering the charging cable according to a second tempering profile, - Cooling of the charging cable after a second cooling profile.

The invention discloses preparation and application of a manganese oxide doped graphene flexible electrochemical sensor, and belongs to the technical field of electrochemical sensing. The preparation method comprises the following steps: firstly, preparing a manganese oxide doped graphene electrode through one-step laser induction, then preparing a manganese oxide doped graphene flexible electrochemical sensor by using the manganese oxide doped graphene electrode, and then detecting fenitrothion through the flexible electrochemical sensor. The detection result shows that the flexible electrochemical sensor has excellent detection effect and detection stability on fenitrothion.

The invention discloses a preparation system for forming a liquid metal conductive pipeline through microfluidic injection, and belongs to the technical field of flexible electronic device manufacturing. According to the system, a novel preparation method is adopted, and liquid metal is directly injected into a biocompatible polymer microchip through an air diffusion mechanism, so that a conductive pipeline with excellent conductivity and flexibility is formed. According to the system disclosed by the invention, the surface tension of the polydimethylsiloxane chip is reduced by utilizing a surface modification technology, and a constant low-pressure injection mode is adopted, so that the problems that a micro-channel is difficult to completely fill with liquid metal, bubbles are easy to generate and the filling efficiency is low in a traditional method are effectively solved. The liquid metal conductive pipeline prepared by the system has high conductivity, high thermal conductivity, excellent ductility and repeatability, is suitable for manufacturing a flexible circuit board with a complex three-dimensional irregular pattern, and provides a brand new preparation technology for the fields of wearable equipment, flexible sensors and the like; meanwhile, the problem that a traditional circuit board is difficult to modify and repair is solved, the circuit is effectively protected, and high fidelity is achieved.

The invention discloses a high-flexibility rat-proof and ant-proof wear-resistant tensile network cable manufacturing system and method, and relates to the field of network cable manufacturing. The raw material pretreatment module performs nano modification on a conductor and ultrasonic softening on an insulating material; the stranding module dynamically adjusts the pitch in a self-adaptive manner; the insulating layer wrapping module is assisted by an intelligent material and an electric field; the rat-and-ant-proof layer adding module adopts a composite repellent and a microcapsule slow release technology; the wear-resistant layer coating module adopts a nano composite wear-resistant material and a pulse process; the tensile layer setting module is made of a novel fiber composite material and is optimally arranged; and the detection and packaging module adopts multi-sensor fusion and environment-friendly packaging, so that the performance of the network cable is guaranteed. The comprehensive performance of the network cable is improved, the flexibility is good, the cable is suitable for complex wiring, and the cable is rat-proof, termite-proof, wear-resistant and tensile. Intelligent monitoring guarantees stability, raw material recovery reduces cost and pollution, detection packaging ensures reliable quality, and a high-quality scheme is provided for network communication.

The utility model relates to the technical field of electromagnetic wire stretching clamping structures, in particular to a clamping mechanism for electromagnetic wire stretching, which comprises a roller body, a plate seat for auxiliary supporting is assembled on the surface of one side end of the periphery of the roller body, and a groove for connection is formed in the surface of the top end of the plate seat; when an electromagnetic wire needing wire drawing needs to be clamped, a worker can conveniently take the cushion block, the cushion block can move within a certain range due to the fact that the cushion block is connected with the plate base on the surface of the roller body through the chain, and then the worker only needs to connect the end of the electromagnetic wire with the inserting hole in the inner side of the cushion block in an inserted mode. Then, a screw rod at the top of the cushion block is rotated, so that the screw rod rotates and is screwed with a screw hole in the top of the cushion block, a pressing block is conveniently pushed, the pressing block can clamp an electromagnetic wire inserted into the inner side of the cushion block, the electromagnetic wire can be conveniently clamped, then, the roller body is rotated, and the electromagnetic wire can be drawn, so that the operation is more convenient and faster; the use is convenient.