A heating cable with a wire winding structure and a wire winding device thereof

Abstract

The present invention relates to the technical field of heating cables, and specifically to a heating cable with a wire winding structure and a wire winding device thereof, comprising a heating cable core and an outer sheath layer sleeved outside the heating cable core, the heating cable core comprising a central core wire body, heating wires being uniformly spirally wound along the length direction of the central core wire body, the central core wire body comprising an insulating rope body, and metal cold wires parallelly attached along the length direction of the insulating rope body, the metal cold wires being intermittently arranged along the length direction of the insulating rope body, compared with heating cables of traditional structures, the heating cable has better flexibility, especially being easy to bend at bending places and not prone to breakage, and because the heating wires are uniformly wound, the heat conduction efficiency is better, and the heating cable is more suitable for electric floor heating application scenarios in small and irregular spaces.

Description

Technical Field

[0001] The present invention relates to the technical field of heating cables, and in particular to a heating cable with a wire winding structure and a wire winding device thereof. Background Art

[0002] A heating cable is a cable used for heating or heating, usually consisting of a cold wire and a hot wire. In the traditional sense, the hot wire refers to the heating part of the cable, that is, the main part of the cable, which is generally made of metal wire or alloy wire. The cold wire is the connector end of the hot wire used to conduct electricity and connect the power supply and the hot wire. The cold wire end is obviously not suitable for heating to avoid safety hazards. In the prior art, such as the connector for connecting a carbon fiber hot wire and a metal cold wire disclosed in Chinese patent document CN204834924U, a new type of implicit connector disclosed in CN2019106660U The first and the second ends are all equipped with a connecting terminal, one end of which is connected to the hot wire, that is, the main part of the cable, and the other end is connected to the cold wire. One end of the cold wire is used to connect to the power supply, and the other end is firmly connected to the hot wire through the connecting terminal. That is, the cold wire in the traditional sense is only the joint part of the heating cable body. The cold wire is connected to one end of the hot wire, and there is no overlapping intersection. Therefore, the hot wire of the heating cable is usually a single straight line. In order to ensure sufficient heating effect, the wire diameter of the hot wire is relatively thick, so the flexibility is poor, especially it is easy to break at the bending point, bending is difficult, and the thermal conductivity efficiency is not ideal. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a heating cable with a wire winding structure and a wire winding device thereof, so as to solve the problems that the hot wire of the existing heating cable has poor flexibility, is easy to break, and has unsatisfactory thermal conductivity.

[0004] Based on the above purpose, the present invention provides a heating cable with a wire winding structure, comprising a heating cable core and an outer sheath layer sleeved outside the heating cable core:

[0005] The heating cable core includes a central core wire body, along the length direction of which a heating wire is evenly spirally wound. The central core wire body includes an insulating rope body, and a metal cold wire parallel to the length direction of the insulating rope body. The metal cold wire is intermittently arranged along the length direction of the insulating rope body.

[0006] Preferably, the metal cold wire is a copper wire.

[0007] Preferably, the diameter of the metal cold wire is 1 / 3-1 / 2 of the diameter of the heating wire.

[0008] Preferably, the heating wire and the metal cold wire are connected by welding or crimping.

[0009] The present invention also provides a wire winding device for a heating cable with a wire winding structure, comprising:

[0010] A horizontal wire feeder includes a machine case and a wire-releasing module, an intermittent wire-feeding module, a wire-winding module, and a wire-collecting module arranged on the machine case. The wire-releasing module includes a wire-releasing drum and a first wire wheel group rotatably connected to the machine case, and an insulating wire body is wound on the wire-releasing drum.

[0011] The intermittent wire adding module comprises a cold wire drum and a second wire wheel group which are rotatably connected to the chassis, the metal cold wire is wound on the cold wire drum, and a cutting clamp mechanism is provided at the end of the second wire wheel group;

[0012] The wire winding module comprises a wire winding box arranged on the chassis, a hot wire drum is horizontally arranged in the wire winding box, a heating wire is wound on the hot wire drum, an insulating rope body is continuously fed into the hot wire drum through a rope-releasing drum and a first wire wheel group, a metal cold wire is intermittently cut by a pliers mechanism, so that the metal cold wire is intermittently fed into the hot wire drum through the cold wire drum and a second wire wheel group, a wire winding claw is rotatably connected in the wire winding box, one end of the wire winding claw is located outside the hot wire drum, and is used to connect the heating wire on the hot wire drum, and the other end of the wire winding claw extends out of the hot wire drum, and is used to wind the heating wire around the outside of the core wire body;

[0013] The wire-receiving module comprises a wire-receiving drum and a third wire wheel group which are rotatably connected to the chassis. The heating cable core after the wire winding is successively reeled through the third wire wheel group and the wire-receiving drum.

[0014] Preferably, a wire feeding frame is vertically provided on the chassis, and the first wire wheel group and the second wire wheel group are respectively rotatably connected to the wire feeding frame. The pliers mechanism includes pneumatic pliers fixed on the wire feeding frame, and the bottom end of the pneumatic pliers is drivingly connected to the pliers head. A wire reel is movably connected to the wire feeding frame, and the insulating rope body and the metal cold wire are laterally passed through the hollow interior of the wire reel and guided into the hot wire reel. The heating wire rotates with one end of the wire winding claw and is wound around the end of the core wire body that passes through the wire reel. When the pliers head rotates to cut the metal cold wire, the wire reel is pushed to move laterally close to the hot wire reel. The pliers head rotates to open, so that when the metal cold wire is fed, the wire reel moves laterally away from the hot wire reel.

[0015] Preferably, an inverted concave-shaped slide groove is opened at the bottom end of the wire barrel, and is slidably connected to the top of the wire feeding frame through the slide groove. An elastic reset member is connected between the bottom end of the wire barrel and the wire feeding frame to drive the wire barrel to move laterally away from the hot wire barrel.

[0016] Preferably, a transmission wheel is rotatably connected to the back of the wire feeding frame, and the transmission wheel is coaxially connected to the first wire wheel group. The outer circle of the transmission wheel is rotatably connected to a U-shaped frame. The top of the pliers head is connected to the pneumatic pliers through a rotating shaft, and a connecting rod is connected to the rotating shaft. The bottom end of the connecting rod is inserted into the U-shaped frame, and a transmission block is provided on the side of the wire reel facing the transmission wheel. When the pliers head rotates to cut the cold metal wire, the connecting rod is driven to rotate through the rotating shaft, and the connecting rod pushes the U-shaped frame to rotate toward the side of the wire reel, so that each U-shaped frame pushes the transmission block one by one, and drives the wire reel to move laterally close to the hot wire reel. When the pliers head rotates to open, the connecting rod pushes the U-shaped frame to rotate in the opposite direction, so that the U-shaped frame moves away from the transmission block.

[0017] Preferably, a marking pen holder is provided on one side of the pneumatic pliers, and a liquid outlet pipe is connected to the bottom end of the marking pen holder. The liquid outlet pipe discharges liquid toward the outlet end of the conductor barrel, and is used to mark the cold wire joint of the heating cable core.

[0018] Preferably, a fixed wire clamp is provided on the top of one end of the wire outlet of the wire barrel, which is used to fix the bottom end of the liquid outlet tube. A liquid outlet head is slidably connected to the bottom end of the marking pen barrel laterally, and the bottom end of the liquid outlet head is connected to the top end of the liquid outlet tube. A vertical rod is erected on the top end of the wire barrel, and the vertical rod is connected to the side end of the liquid outlet head. When the vertical rod moves laterally with the wire barrel, it drives the liquid outlet head to move laterally synchronously. When the liquid outlet head moves through the center position of the bottom end of the marking pen barrel, the marking pen barrel, the liquid outlet head and the liquid outlet tube spray liquid to mark the heating cable core. When the pliers head is in a fully closed state when cutting the wire or in a fully open state when releasing the wire, the liquid outlet head moves to the eccentric position of the bottom end of the marking pen barrel and stops discharging liquid.

[0019] The beneficial effects of the present invention are as follows: the heating cable core includes a central core wire body, heating wires are evenly spirally wound along the length direction of the central core wire body, the central core wire body includes an insulating rope body, and a metal cold wire is parallelly attached along the length direction of the insulating rope body, the metal cold wire is intermittently arranged along the length direction of the insulating rope body, and compared with heating cables of traditional structures, the heating cable has better flexibility, especially it is easy to bend and not easy to break at the bending parts, and because the heating wires are evenly wound, the heat conduction efficiency is better, and it is more suitable for electric floor heating application scenarios in small spaces and irregular spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic structural diagram of the heating cable core of the present invention;

[0022] Figure 2It is a schematic diagram of the overall structure of the horizontal wire feeder of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the wire feeding frame of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a wire feeding frame with a marking pen holder of the present invention;

[0025] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point A in the middle;

[0026] Figure 6 It is a schematic diagram of the structure of the shearing pliers mechanism of the present invention when shearing a metal cold wire;

[0027] Figure 7 It is a front view structural schematic diagram of the cutting pliers mechanism of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the transmission wheel of the present invention;

[0029] Fig. 9 It is a schematic side view of the structure of the transmission wheel of the present invention;

[0030] Fig.10 It is a schematic diagram of the top view of the transmission wheel of the present invention;

[0031] Fig.11 It is a structural schematic diagram of the transmission wheel of the present invention pushing the transmission block;

[0032] Fig.12 It is a side view structural schematic diagram of the liquid outlet head and the vertical rod of the present invention;

[0033] Fig.13 It is a schematic structural diagram of the locking rod of the present invention when it is rotated to lock the vertical rod.

[0034] The markings in the figure are:

[0035] 1. Heating cable core; 2. Central core wire body; 201. Insulating rope body; 202. Metal cold wire; 3. Heating wire; 4. Chassis; 5. Rope release drum; 6. First wire pulley group; 7. Cold wire pulley; 8. Second wire pulley group; 9. Cutter mechanism; 91. Pneumatic pliers; 92. Cutter head; 93. Rotating shaft; 10. Winding box; 11. Hot wire drum; 12. Winding claw; 13. Winding drum; 14. Third wire pulley group; 15. Wire feed frame; 16. Wire drum; 161. Slide groove; 17. Elastic reset member; 18. Transmission wheel; 19. U-shaped frame; 20. Connecting rod; 21. Transmission block; 22. Marking pen holder; 221. Liquid outlet head; 23. Liquid outlet pipe; 24. Fixed wire clamp; 25. Vertical rod; 26. Lock rod. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] A heating cable with a wire winding structure comprises a heating cable core 1 and an outer sheath layer sleeved outside the heating cable core 1, the heating cable core 1 comprises a central core wire body 2, a heating wire 3 is uniformly spirally wound along the length direction of the central core wire body 2, the central core wire body 2 comprises an insulating rope body 201, and a metal cold wire 202 parallel to the length direction of the insulating rope body 201, and the metal cold wire 202 is intermittently arranged along the length direction of the insulating rope body 201.

[0039] The present invention is based on the existing electric floor heating application scenarios, especially in small spaces and irregular spaces, such as bathrooms, small study rooms, stairwells and other small spaces and irregular spaces. The heating cable needs to be laid with frequent turns, and because the laying area is not large and it is far away from the main power connector outside, the length of the cold line is at the same order of magnitude as the length of the hot line. In practice, for example, the length of the hot line used in a small bathroom is about 8-10 meters, and the length of the cold line is about 2-3 meters. At this time, using a traditional heating cable structure will obviously cause wiring troubles, poor flexibility of the hot line, especially easy to break at the bend, difficult to bend, and the thermal conductivity efficiency is not ideal. In this regard, Figure 1As shown, the present invention designs a heating cable core 1 and an outer sheath layer (which has the same structure as the traditional sheath layer and is not shown in the figure) which is sleeved outside the heating cable core 1. In particular, the heating cable core 1 includes a central core wire body 2, and a heating wire 3 is evenly spirally wound along the length direction of the central core wire body 2. The heating wire 3 is made of the same material as the existing hot wire, but is changed to a thin wire with a significantly reduced diameter. The central core wire body 2 includes an insulating rope body 201, and a metal cold wire 202 which is parallelly attached along the length direction of the insulating rope body 201. The insulating rope body 201 is made of existing nylon rope or fiber rope, etc., so as to further improve the flexibility. The metal cold wire is made of copper wire, and the diameter of the metal cold wire is 1 / 3-1 / 2 of the diameter of the heating wire to ensure good thermal conductivity. The metal cold wire 202 is intermittently arranged along the length direction of the insulating rope body 201, for example For example, according to the requirements of tooling, the length ratio of the metal cold wire 202 and the core wire body 2 is set to 1:5, etc., so as to control the spacing distance of the metal cold wire 202. The heating wire 3 is continuously and evenly wound along the core wire body 2. The heating cables with a wound structure that are mass-produced are cut according to the marked positions during actual use to obtain hot wires and cold wires of corresponding lengths, which are freely spliced ​​and laid. When current passes through the position with the cold wire, since the resistance of the cold wire is much smaller than that of the hot wire, the hot wire at the corresponding position does not conduct electricity and generate heat. When current passes through the position without the cold wire, the wound heating wire 3 conducts electricity and generates heat. Compared with the heating cable with traditional structure, it has better flexibility, especially at the bending point where it is easy to bend and not easy to break. In addition, since the heating wire 3 is evenly wound, the heat conduction efficiency is better, which is obviously more suitable for electric floor heating application scenarios in small and irregular spaces.

[0040] In an embodiment of the present invention, the heating wire 3 and the metal cold wire 202 are connected by welding or crimping. Since the heating wire 3 is continuously, evenly and tightly wound around the core wire body 2, the heating wire 3 and the metal cold wire 202 are naturally tightly crimped.

[0041] The present invention also provides a wire winding device for a heating cable with a wire winding structure, such as Figure 2 , Figure 3 As shown, it includes a horizontal wire feeder, which includes a chassis 4 and a wire-releasing module, an intermittent wire-adding module, a wire-winding module, and a wire-collecting module arranged on the chassis 4. The chassis 4 plays the role of supporting and accommodating power components internally. A frame is built on the top platform of the chassis 4, and functional modules such as the wire-releasing module, the intermittent wire-adding module, the wire-winding module, and the wire-collecting module are arranged in sequence from left to right on the frame;

[0042] The wire-releasing module includes a wire-releasing drum 5 and a first wire pulley assembly 6 rotatably connected to the chassis 4, and the insulating wire body 201 is wound on the wire-releasing drum 5;

[0043] The intermittent wire adding module includes a cold wire drum 7 and a second wire wheel group 8 which are rotatably connected to the chassis 4. The metal cold wire 202 is wound on the cold wire drum 7. A cutting clamp mechanism 9 is provided at the end of the second wire wheel group 8. The first wire wheel group 6 and the second wire wheel group 8 are provided with a plurality of them. The wire wheel group, the rope drum 5, and the back of the cold wire drum 7 are correspondingly provided with driving transmission components such as motors, etc., which are used to drive the rotation of the wire feeding;

[0044] The wire winding module includes a wire winding box 10 arranged on the chassis 4, a hot wire drum 11 is horizontally arranged in the wire winding box 10, the heating wire 3 is wound on the hot wire drum 11, the insulating rope body 201 is continuously fed into the hot wire drum 11 through the rope release drum 5 and the first wire wheel group 6, and the metal cold wire 202 is intermittently cut by the clamp mechanism 9, so that the metal cold wire 202 is intermittently fed into the hot wire drum 11 through the cold wire drum 7 and the second wire wheel group 8, and the wire winding claw 12 is rotatably connected in the wire winding box 10. One end of the wire winding claw 12 is located outside the heat wire drum 11, and is used to connect the heating wire 3 on the heat wire drum 11. The other end of the wire winding claw 12 extends out of the heat wire drum 11, and is used to wind the heating wire 3 around the outside of the core wire body 2. The wire winding claw 12 is driven to rotate by components such as a motor and a pulley in the chassis 4 below it, and the heat wire drum 11 is fixed and does not rotate. The horizontal axis position of the heat wire drum 11 is designed to be a hollow structure for the wound heating cable core 1 to pass through. Specifically, Figure 3 As shown, the end of the wire winding claw 12 extending out of the heating wire barrel 11 can be connected to one end of the wire, that is, one heating wire barrel 11 is connected accordingly, or it can be connected to two ends of the wire, that is, two heating wire barrels 11 are connected accordingly. The wire winding claw 12 is rotated axially around the wire, and the heating wire 3 is spirally wound on the core wire body 2;

[0045] The wire-receiving module includes a wire-receiving drum 13 and a third wire wheel group 14 rotatably connected to the chassis 4. There are multiple third wire wheel groups 14, and the wire wheel groups and the wire-receiving drum 13 are respectively provided with driving transmission components such as motors on the back side for driving the rotating wire-receiving. The heating cable core 1 after winding is passed through the axis of the hot wire drum 11, and the wire-receiving is completed by the third wire wheel group 14 and the wire-receiving drum 13.

[0046] In an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, a wire feeding frame 15 is vertically arranged on the chassis 4, and the first wire wheel group 6 and the second wire wheel group 8 are respectively rotatably connected to the wire feeding frame 15. The pliers mechanism 9 includes a pneumatic pliers 91 fixed on the wire feeding frame 15, and the bottom end of the pneumatic pliers 91 is drivingly connected to a pliers head 92, and a wire barrel 16 is movably connected to the wire feeding frame 15. The insulating rope body 201 and the metal cold wire 202 are horizontally passed through the hollow interior of the wire barrel 16 and guided into the hot wire barrel 11, which is conducive to better wire closing. The heating wire 3 rotates with one end of the wire winding claw 12 and is wound around one end of the core wire body 2 passing through the wire barrel 16. When the pliers head 92 rotates to cut the metal cold wire 202, it pushes the wire barrel 16 to move horizontally close to the hot wire barrel 11, and the outlet end of the wire winding claw 12 is 1 / 2" away from the core wire body 2 passing through the wire barrel 1. 6, because when there is no cold wire, the heating wire 3 is only wound around the insulating rope body 201 part, and the winding radius becomes smaller. Under the same distance, the wound heating wire 3 will become looser, thereby the wire barrel 16 is moved horizontally close to the hot wire barrel 11, and the distance from the outlet end of the wire winding claw 12 to the end of the core wire body 2 passing through the wire barrel 16 is lengthened, which is equivalent to adaptively tensioning the heating wire 3 to maintain tension balance until the pliers head 92 is rotated and opened to allow the metal cold wire 202 to be re-fed, and the wire barrel 16 is moved horizontally away from the hot wire barrel 11 to reset. Correspondingly, the outlet end of the wire winding claw 12 is closer to the end of the core wire body 2 passing through the wire barrel 16, which is equivalent to adaptively loosening the heating wire 3 to adapt to a larger winding radius, maintain tension balance, and avoid wire breakage.

[0047] In an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, an inverted concave-shaped slide groove 161 is opened at the bottom end of the wire tube 16, and is slidably connected to the top of the wire feeding frame 15 through the slide groove 161. The wire tube 16 rides on the wire feeding frame 15 through the slide groove 161. More preferably, a plurality of rollers or balls are provided in the slide groove 161 to facilitate better sliding efficiency. An elastic reset member 17 is connected between the bottom end of the wire tube 16 and the wire feeding frame 15. The elastic reset member 17 adopts existing elastic components such as springs, which are used to drive the wire tube 16 to move laterally away from the hot wire tube 11 and reset.

[0048] In an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the back of the wire feeding frame 15 is rotatably connected with a transmission wheel 18, and the transmission wheel 18 is coaxially connected with the first wire wheel group 6, specifically, it is coaxially connected with the uppermost wire wheel in the first wire wheel group 6, and the outer circumference of the transmission wheel 18 is rotatably connected with a U-shaped frame 19, and the top of the cutting pliers head 92 is connected to the pneumatic cutting pliers 91 through a rotating shaft 93, and one of the cutting pliers heads 92 rotates synchronously with the rotating shaft 93 to realize the wire cutting action, and the rotating shaft 93 is connected with a connecting rod 20, specifically, as shown Figure 7 As shown, the outer end of the rotating shaft 93 is connected with an L-shaped connecting rod 20, and one end of the horizontal rod part of the connecting rod 20 can be sleeved on the rotating shaft 93 to realize a modular detachable connection. The bottom end of the vertical rod part of the connecting rod 20 is always inserted in the U-shaped frame 19, and a transmission block 21 is provided on the side of the wire barrel 16 facing the transmission wheel 18. The transmission block 21 can be set in a horizontal cylinder, sphere or wedge block. When the pliers head 92 rotates to cut the metal cold wire 202, the connecting rod 20 is driven to rotate through the rotating shaft 93, and the connecting rod 20 pushes the U-shaped frame 19 to rotate toward the side of the wire barrel 16, so that each U-shaped frame 19 pushes the arc end face or inclined end face of the transmission block 21 one by one, and drives the wire barrel 16 to move laterally close to the hot wire barrel 11, as shown in FIG. Figure 8 , Fig. 9 , Fig.11 As shown, since the U-shaped frame 19 is closely spaced along the outer circumference of the transmission wheel 18, the wire barrel 16 is continuously pushed and maintained to be in a state of being close to the heating wire barrel 11, and since the connecting rod 20 is inserted in the uppermost U-shaped frame 19, the transmission wheel 18 rotates counterclockwise with the wire wheel for nearly one circle, and then triggers the wire barrel 16 to move horizontally. During the triggering process, the circumferential distance of the rotation of the first wire wheel group 6 is equivalent to the distance from the core wire body 2 from the pliers head 92 to the wire barrel 16 passing through. In this way, regardless of the speed of wire feeding, the tensile stress of the heating wire 3 can be adaptively adjusted at the exact time point until the pliers head 92 rotates and opens, and the connecting rod 20 pushes the U-shaped frame 19 to rotate in the opposite direction, as shown in FIG. Fig.10 As shown, the U-shaped frame 19 is moved away from the transmission block 21, and the wire barrel 16 is laterally moved away from the hot wire barrel 11 and reset under the action of the elastic reset member 17, so as to adapt to a larger winding radius and maintain tension balance.

[0049] In an embodiment of the present invention, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, a marking pen holder 22 is provided on one side of the pneumatic pliers 91, and a liquid outlet pipe 23 is connected to the bottom end of the marking pen holder 22. Marking liquid is stored in the marking pen holder 22, and the liquid outlet pipe 23 discharges liquid toward the outlet end of the conductor tube 16, which is used to mark the cold wire joints of the heating cable core 1, that is, to mark the two ends of the intermittently arranged metal cold wire 202, so as to facilitate subsequent use and cutting.

[0050] In an embodiment of the present invention, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, a fixed wire clamp 24 is provided at the top of one end of the wire outlet of the wire barrel 16, which is used to fix the bottom end of the liquid outlet tube 23. A liquid outlet head 221 is slidably connected to the bottom end of the marking pen barrel 22, and the bottom end of the liquid outlet head 221 is connected to the top end of the liquid outlet tube 23. A vertical rod 25 is vertically provided at the top end of the wire barrel 16, and the vertical rod 25 is connected to the side end of the liquid outlet head 221. More preferably, the marking pen barrel 22 is movably connected to the side of the pneumatic shears 91, which is convenient for detachable use. The top of the marking pen holder 22 is connected to an air pipeline of the same route or branch of the pneumatic cutting forceps 91. A piston is provided inside the marking pen holder 22. A liquid outlet is provided at the center of the bottom end of the marking pen holder 22. When the cutting forceps head 92 is in a fully closed state for cutting or in a fully open state for releasing, the liquid outlet head 221 moves to an eccentric position at the bottom end of the marking pen holder 22 and stops discharging liquid. When the cutting forceps head 92 changes state, the air pipeline synchronously supplies liquid to the pneumatic cutting forceps 91 and the marking pen holder 22. 2, the air is taken in, and the air is compressed in the piston member, but because the liquid outlet hole is in a closed state, the compressed marking liquid cannot be discharged. Only after the state of the pliers head 92 is changed, the transmission wheel 18 rotates counterclockwise with the wire wheel for nearly one circle, and then triggers the wire barrel 16 to move horizontally, the vertical rod 25 moves horizontally synchronously with the wire barrel 16, thereby driving the liquid outlet head 221 to move horizontally synchronously. When the liquid outlet head 221 moves through the center position of the bottom end of the marking pen barrel 22, the compressed marking liquid is bound to be sprayed from the liquid outlet hole, the liquid outlet head 221, and the liquid outlet pipe 23 of the marking pen barrel 22 to the heating cable core 1 for marking, so as to realize the spray marking at an accurate time point, and the bottom end of the liquid outlet pipe 23 is fixed by the fixed wire clamp 24, so it is always facing the outlet end of the wire barrel 16, that is, the liquid outlet pipe 23 is in a redundant relaxation state between the liquid outlet head 221 and the fixed wire clamp 24; the spraying position is the outer side of the heating cable core 1 at both ends of the metal cold wire 202, which is easy to identify.

[0051] Among them, Fig.12 , Fig.13As shown, the side end of the liquid outlet head 221 is rotatably connected to the locking rod 26, and the side end of the vertical rod 25 is provided with a locking hole. When the marking pen holder 22 is clamped on the side of the pneumatic shears 91, the air duct at the top of the pneumatic shears 91 is connected, and the air intake pressure of the airway tube is adjusted, and the bottom end of the liquid outlet pipe 23 is fixedly clamped on the fixed wire clamp 24, and then the locking rod 26 is rotated downward until the bottom end of the locking rod 26 is inserted into the locking hole and locked, completing the detachable assembly connection, so that the vertical rod 25 drives the liquid outlet head 221 to move horizontally synchronously. Preferably, in the initial state, the liquid outlet pipe 23 is filled with marking liquid, but the opening at the bottom end of the liquid outlet pipe 23 is small, or an outer flap is provided at the bottom end opening of the liquid outlet pipe 23, so that in the initial state, it is not enough to release the marking liquid, and only when the liquid outlet head 221 moves horizontally, the pressurized marking liquid in the marking pen holder 22 rushes downward and is released and sprayed along the liquid outlet pipe 23.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A heating cable with a wire winding structure, comprising a heating cable core (1) and an outer sheath layer sleeved outside the heating cable core (1), characterized in that: The heating cable core (1) comprises a central core wire body (2), a heating wire (3) is evenly spirally wound along the length direction of the central core wire body (2), the central core wire body (2) comprises an insulating rope body (201), and a metal cold wire (202) parallelly attached along the length direction of the insulating rope body (201), and the metal cold wire (202) is intermittently arranged along the length direction of the insulating rope body (201); The metal cold wire (202) is a copper wire; The diameter of the metal cold wire (202) is 1 / 3-1 / 2 of the diameter of the heating wire (3); The heating wire (3) and the metal cold wire (202) are connected by welding or crimping.

2. A wire winding device for preparing a heating cable with a wire winding structure as claimed in claim 1, characterized in that: The invention comprises a horizontal wire feeder, the horizontal wire feeder comprises a machine case (4) and a wire releasing module, an intermittent wire adding module, a wire winding module and a wire collecting module arranged on the machine case (4), the wire releasing module comprises a wire releasing drum (5) and a first wire wheel group (6) rotatably connected to the machine case (4), and the insulating rope body (201) is wound on the wire releasing drum (5); The intermittent wire adding module comprises a cold wire drum (7) and a second wire wheel group (8) rotatably connected to the chassis (4); the metal cold wire (202) is wound on the cold wire drum (7); and a cutting clamp mechanism (9) is provided at the end of the second wire wheel group (8); The wire winding module comprises a wire winding box (10) arranged on a chassis (4), a hot wire drum (11) being arranged horizontally in the wire winding box (10), the heating wire (3) being wound on the hot wire drum (11), the insulating wire body (201) being continuously fed into the hot wire drum (11) through a wire unwinding drum (5) and a first wire wheel assembly (6), and the metal cold wire (202) being intermittently cut through a cutting clamp mechanism (9) so that the metal cold wire (202) passes through the cold wire drum (7) The second wire wheel assembly (8) is intermittently fed into the hot wire drum (11), and a wire winding claw (12) is rotatably connected in the wire winding box (10), one end of the wire winding claw (12) is located outside the hot wire drum (11) and is used to connect the heating wire (3) on the hot wire drum (11), and the other end of the wire winding claw (12) extends out of the hot wire drum (11) and is used to wind the heating wire (3) around the outside of the core wire body (2); The wire collection module comprises a wire collection drum (13) and a third wire wheel group (14) which are rotatably connected to the chassis (4); the heating cable core (1) after winding the wire is successively collected through the third wire wheel group (14) and the wire collection drum (13).

3. The wire winding device for a heating cable with a wire winding structure according to claim 2, characterized in that: A wire feeding frame (15) is vertically arranged on the chassis (4), a first wire wheel group (6) and a second wire wheel group (8) are rotatably connected to the wire feeding frame (15), the pliers mechanism (9) comprises a pneumatic pliers (91) fixed to the wire feeding frame (15), a pliers head (92) is drivably connected to the bottom end of the pneumatic pliers (91), a wire barrel (16) is movably connected to the wire feeding frame (15), an insulating rope body (201) and a metal cold wire (202) are rotatably connected to the wire barrel ( The heating wire is laterally passed through the hollow interior of the heating wire barrel (16) and guided into the heating wire barrel (11). The heating wire rotates with one end of the winding claw (12) and is wound around one end of the central core wire body (2) and passes through the wire barrel (16). When the pliers head (92) rotates to cut the metal cold wire (202), the wire barrel (16) is pushed to move laterally closer to the heating wire barrel (11). When the pliers head (92) rotates to open, the wire barrel (16) moves laterally away from the heating wire barrel (11) when the metal cold wire (202) is fed.

4. The wire winding device for a heating cable with a wire winding structure according to claim 3, characterized in that: The bottom end of the wire barrel (16) is provided with an inverted concave-shaped slide groove (161), and is slidably connected to the top end of the wire feeding frame (15) through the slide groove (161). An elastic reset member (17) is connected between the bottom end of the wire barrel (16) and the wire feeding frame (15) for driving the wire barrel (16) to move laterally away from the hot wire barrel (11).

5. The wire winding device for a heating cable with a wire winding structure according to claim 3, characterized in that: The back of the wire feeding frame (15) is rotatably connected to a transmission wheel (18), the transmission wheel (18) is coaxially connected to the first wire wheel group (6), the outer circumference of the transmission wheel (18) is rotatably connected to a U-shaped frame (19), the top end of the pliers head (92) is connected to the pneumatic pliers (91) through a rotating shaft (93), the rotating shaft (93) is connected to a connecting rod (20), the bottom end of the connecting rod (20) is inserted into the U-shaped frame (19), and the side of the wire barrel (16) facing the transmission wheel (18) is provided with a transmission block ( 21), when the pliers head (92) rotates to cut the cold metal wire (202), the connecting rod (20) is driven to rotate through the rotating shaft (93), and the connecting rod (20) pushes the U-shaped frame (19) to rotate toward the side of the wire barrel (16), so that each U-shaped frame (19) pushes the transmission block (21) one by one, and drives the wire barrel (16) to move horizontally close to the hot wire barrel (11), and when the pliers head (92) rotates to open, the connecting rod (20) pushes the U-shaped frame (19) to rotate in the opposite direction, so that the U-shaped frame (19) moves away from the transmission block (21).

6. The wire winding device for a heating cable with a wire winding structure according to claim 3, characterized in that: A marking pen holder (22) is provided on one side of the pneumatic cutting pliers (91), and a liquid outlet pipe (23) is connected to the bottom end of the marking pen holder (22). The liquid outlet pipe (23) discharges liquid toward the outlet end of the conductor tube (16) and is used to mark the cold wire joint of the heating cable core (1).

7. The wire winding device for a heating cable with a wire winding structure according to claim 6, characterized in that: A fixed wire clamp (24) is provided at the top of one end of the wire outlet of the wire barrel (16) for fixing the bottom end of the liquid outlet tube (23). A liquid outlet head (221) is slidably connected to the bottom end of the marking pen barrel (22). The bottom end of the liquid outlet head (221) is connected to the top end of the liquid outlet tube (23). A vertical rod (25) is vertically provided at the top end of the wire barrel (16). The vertical rod (25) is connected to the side end of the liquid outlet head (221). The vertical rod (25) moves with the wire barrel. When (16) moves horizontally, it drives the liquid discharge head (221) to move horizontally synchronously. When the liquid discharge head (221) moves through the center position of the bottom end of the marking pen barrel (22), the marking pen barrel (22), the liquid discharge head (221), and the liquid discharge pipe (23) spray liquid to mark the heating cable core (1). When the cutting pliers head (92) is in a fully closed state when cutting the wire or in a fully open state when releasing the wire, the liquid discharge head (221) moves to an eccentric position at the bottom end of the marking pen barrel (22) and stops discharging liquid.

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