A hollow coil winding method and winding device

Abstract

The present invention relates to the field of hollow coil processing, and in particular to a hollow coil winding method and winding device, wherein a first fixed point and a second fixed point are preset; one end of a copper wire is fixed at the first fixed point to form a starting line; the copper wire is pulled onto a core shaft, and the first fixed point and the second fixed point are coaxially rotated around the core shaft at the same angular velocity while the core shaft is driven to rotate, and the other end of the copper wire is fixed at the second fixed point after rotating a preset number of circles to form a tail line; the starting line and the tail line are cut at preset cutting positions at the same distance from the core shaft, respectively, to obtain a hollow coil. The present invention provides a hollow coil winding method and a winding device, which, compared with the traditional hollow coil processing method, ensure the cutting accuracy of the first line and the tail line, and after the cutting is completed, there is no need to process the first and tail ends of the coil again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to the improvement of product quality.

Description

Technical Field

[0001] The invention relates to the field of hollow coil processing, and in particular to a hollow coil winding method and a winding device. Background Art

[0002] The hollow coil, also known as the Rogowski coil, is an AC current sensor with a hollow ring shape. It is available in two types: flexible and rigid. It is suitable for measuring AC current in a wide frequency range. It has no special requirements for conductors and dimensions. It has a fast instantaneous response capability and is widely used in situations where traditional current measurement devices such as current transformers cannot be used. It is used for current measurement, especially high-frequency and large current measurement. Winding is an important part of the production operation of hollow coils. The winding equipment can refer to the Chinese invention patent with application number CN201811004271.9 and the name of a winding equipment. It is difficult for existing winding equipment to ensure the cutting accuracy of the first and tail wires when cutting the coils. After the cutting is completed, the first and tail wire ends of the coil need to be processed again. The steps are cumbersome and the efficiency is low. In addition, the consistency of the products processed in this way is low, which is not conducive to improving the product quality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hollow coil winding method and a winding device, which can realize the same length cutting of the first and tail wire ends of the coil.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for winding a hollow coil, presetting a first fixed point and a second fixed point; fixing one end of the copper wire at the first fixed point to form a starting line; pulling the copper wire onto the core shaft, driving the core shaft to rotate while making the first fixed point and the second fixed point rotate coaxially around the core shaft at the same angular velocity, and after rotating a preset number of times, fixing the other end of the copper wire at the second fixed point to form a tail line; cutting at preset cutting positions at the same distance from the core shaft at the starting line and the tail line to obtain a hollow coil.

[0005] Furthermore, a first cutting point is preset between the first fixed point and the core shaft, and a second cutting point is preset between the second fixed point and the core shaft, so that the distance from the first cutting point to the core shaft is equal to the distance from the second cutting point to the core shaft. After the tail line is formed, the starting line is cut at the first cutting point and the tail line is cut at the second cutting point at the same time.

[0006] Furthermore, after the starting line is formed, the copper wire is pulled onto the core shaft along a preset route for winding, and after winding, the copper wire is pulled out along another preset route and fixed to form a tail line.

[0007] Furthermore, before forming the start line and the tail line, tin is applied at a preset cutting position of the start line and a preset cutting position of the tail line.

[0008] Furthermore, after cutting, the hollow coil is peeled off the mandrel and the remaining copper wire is removed.

[0009] The present invention also provides a winding device, including a frame, a jig and a cutter, wherein the jig is rotatably arranged on the frame, and the cutter is movably arranged on the frame, the jig is provided with a core shaft, a starting wire fixing piece and a tail wire fixing piece, and the cutter is used to respectively cut the copper wire wound between the core shaft and the starting wire fixing piece and the copper wire wound between the core shaft and the tail wire fixing piece.

[0010] Furthermore, the jig is provided with wire guide grooves between the core shaft and the starting wire fixing piece and between the core shaft and the tail wire fixing piece.

[0011] Furthermore, the jig is provided with tool grooves adapted to the tool between the mandrel and the start-line fixing piece and between the mandrel and the tail-line fixing piece, and the spacing between the two tool grooves and the mandrel is equal.

[0012] Furthermore, the start-line fixing member and the tail-line fixing member are respectively located on opposite sides of the core shaft, and the winding posts of the start-line fixing member and the winding posts of the tail-line fixing member are symmetrically arranged relative to the core shaft.

[0013] The beneficial effect of the present invention is that it provides a hollow coil winding method and a winding device, and the winding method specifically includes the steps of: fixing one end of the copper wire used to wind the hollow coil, and then winding the rest of the wire on the core shaft into a circle, and then leading out and fixing the other end of the copper wire after winding a certain number of circles, so that the positions of the starting wire, the coil and the tail wire of the copper wire are relatively fixed, and finally cutting at the preset positions on the starting wire and the tail wire of the copper wire by using a cutter to obtain a hollow coil product. The first fixed point and the second fixed point rotate synchronously with the core shaft coaxially, so as to ensure the relative position accuracy of the starting wire part, the coil and the tail wire part, and to achieve the subsequent fixed-length cutting of the starting wire part and the tail wire part. The winding device includes a jig and a cutter. The core shaft on the jig is used for winding, the starting wire fixing piece is used to fix the starting wire end of the copper wire, and the tail wire fixing piece is used to fix the tail wire end of the copper wire. The cutter avoids the copper wire and the jig during the lead-in and winding processes. After the winding is completed, the starting wire and the tail wire of the coil are cut off at a fixed length. Compared with the traditional hollow coil processing method, the cutting accuracy of the starting wire and the tail wire is guaranteed. After the cutting is completed, there is no need to process the starting and tail wire ends of the coil separately again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a winding device;

[0015] Figure 2 It is a schematic diagram of the structure of the rack;

[0016] Figure 3It is a structural schematic diagram of the wire clamping mechanism;

[0017] Figure 4 It is a structural diagram of the fixture;

[0018] Figure 5 This is an exploded diagram of the fixture;

[0019] Figure 6 is a schematic diagram of the structure of the mandrel;

[0020] Figure 7 It is a partial schematic diagram of the winding device;

[0021] Figure 8 is a schematic diagram of the structure of the tool;

[0022] Fig. 9 It is a structural schematic diagram of the wire winding feeding mechanism;

[0023] Fig.10 It is a structural schematic diagram of the material receiving mechanism;

[0024] Fig.11 Another structural schematic diagram of the material receiving mechanism;

[0025] Fig.12 It is a structural schematic diagram of an air-core coil;

[0026] Description of labels:

[0027] 1. Frame;

[0028] 2. Fixture; 21. Mandrel; 22. Starting line fixing piece; 221. Winding column; 2211. Through slot; 23. Tail line fixing piece; 24. Leading groove; 25. Knife groove; 26. Rotating shaft; 261. Mounting hole; 262. Elastic piece; 27. Core column; 271. Plug hole; 28. Sliding sleeve; 281. Assembly hole; 282. Strip hole; 29. ​​Positioning pin;

[0029] 3. Knife; 31. Moving knife holder; 32. Cutter; 33. Scraper;

[0030] 4. Pay-off mechanism; 41. First moving frame; 42. Pay-off needle;

[0031] 5. Wire clamping mechanism; 51. Second mobile frame; 52. Pneumatic clamping block;

[0032] 6. Tin immersion mechanism; 61. Third moving frame; 62. Tin cup;

[0033] 7. Wire winding unloading mechanism; 71. Driving member; 72. Support member; 73. Unloading arm;

[0034] 8. Material receiving mechanism; 81. Cylinder; 82. Horizontal collecting tray; 821. Second partition; 822. Material receiving area; 83. Inclined material receiving tray; 831. First partition; 832. Material discharge channel;

[0035] 9. Cooling mechanism; 91. Air blowing pipe;

[0036] 10, hollow coil; 101, start line; 102, tail line;

[0037] 11. first fixed point; 111. second fixed point;

[0038] 12. First cut-off point; 121. Second cut-off point. DETAILED DESCRIPTION

[0039] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0040] The invention provides a hollow coil winding method and a winding device, which are used on hollow coil forming equipment.

[0041] Please refer to Figures 1 to 12 As shown, a hollow coil winding method of the present invention is provided, wherein a first fixed point 11 and a second fixed point 111 are preset; one end of a copper wire is fixed at the first fixed point 11 to form a starting line 101; the copper wire is pulled onto a core shaft 21, and while the core shaft 21 is driven to rotate, the first fixed point 11 and the second fixed point 111 are coaxially rotated around the core shaft 21 at the same angular velocity, and the other end of the copper wire is fixed at the second fixed point 111 after rotating a preset number of times to form a tail line 102; the starting line 101 and the tail line 102 are cut at preset cutting positions at the same distance from the core shaft 21, respectively, to obtain a hollow coil 10.

[0042] From the above description, it can be seen that the beneficial effect of the present invention is to provide a hollow coil winding method, which specifically includes the steps of: fixing one end of the copper wire used to wind the hollow coil 10, and then winding the rest of the copper wire into a circle on the core shaft 21, and then leading out and fixing the other end of the copper wire after winding a certain number of circles, so that the positions of the starting line 101, the coil and the tail line 102 of the copper wire are relatively fixed, and finally the tool 3 is used to cut at the preset position on the starting line 101 and the tail line 102 of the copper wire, and the hollow coil 10 product can be obtained. The first fixed point 11 and the second fixed point 111 rotate synchronously with the core shaft 21 coaxially, so as to ensure the relative position accuracy of the starting line 101 part, the coil and the tail line 102 part, and to achieve the subsequent fixed-length cutting of the starting line 101 part and the tail line 102 part. Compared with the traditional hollow coil processing method, the cutting accuracy of the first wire and the tail wire 102 is guaranteed. After the cutting is completed, there is no need to process the first and tail wire 102 ends of the coil again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to improving product quality.

[0043] In an optional embodiment, a first cutting point 12 is preset between the first fixed point 11 and the core shaft 21, and a second cutting point 121 is preset between the second fixed point 111 and the core shaft 21, so that the distance from the first cutting point 12 to the core shaft 21 is equal to the distance from the second cutting point 121 to the core shaft 21. After the tail line 102 is formed, the start line 101 is cut at the first cutting point 12 and the tail line 102 is cut at the second cutting point 121 at the same time.

[0044] From the above description, it can be seen that according to the reserved length requirements of the copper wires at both ends of the coil product, the first cutting point 12 and the second cutting point 121 are set, and the starting line 101 part and the tail line 102 part are cut simultaneously during cutting, which not only achieves the purpose of equal length cutting, but also improves the processing efficiency of the coil.

[0045] In an optional embodiment, after the starting wire 101 is formed, the copper wire is pulled along a preset route onto the core shaft 21 for winding, and after winding, the copper wire is pulled out along another preset route and fixed to form the tail wire 102 .

[0046] From the above description, it can be seen that according to the lead-out angle requirements of the copper wires at both ends of the coil product, the traction route is preset when pulling the starting wire 101 and the tail wire 102 to ensure the relative position accuracy of the starting wire 101 part, the coil and the tail wire 102 part, so as to achieve the subsequent fixed-length cutting of the starting wire 101 part and the tail wire 102 part.

[0047] In an optional embodiment, before forming the starting line 101 and forming the tail line 102 , tinning is performed at a preset cutting position of the starting line 101 and a preset cutting position of the tail line 102 .

[0048] From the above description, it can be seen that after the copper wire is tinned, the insulating layer on its surface is burned off and it can be used directly. The method of tinning first and then cutting off not only ensures the accuracy of tinning and cutting positions, but also helps to improve processing efficiency.

[0049] In an alternative embodiment, the hollow coil 10 is peeled off the mandrel 21 after cutting, and the remaining copper wire is removed.

[0050] It can be seen from the above description that the next processing cycle can be carried out after the hollow coil 10 is collected and the copper wire is removed from the fixed point.

[0051] The present invention also provides a winding device, including a frame 1, a jig 2 and a tool 3, the jig 2 is rotatably set on the frame 1, the tool 3 is movably set on the frame 1, the jig 2 is provided with a core shaft 21, a starting wire fixing part 22 and a tail wire fixing part 23, and the tool 3 is used to cut off the copper wire wound between the core shaft 21 and the starting wire fixing part 22 and the copper wire wound between the core shaft 21 and the tail wire fixing part 23 respectively.

[0052] From the above description, it can be seen that the beneficial effects of the present invention are: providing a hollow coil winding device, the winding device includes a jig 2 and a tool 3, the core shaft 21 on the jig 2 is used for winding, the starting wire fixing piece 22 is used to fix the starting wire 101 end of the copper wire, and the tail wire fixing piece 23 is used to fix the tail wire 102 end of the copper wire. The tool 3 avoids the copper wire and the jig 2 during the lead-in and winding processes, and cuts the starting wire 101 and the tail wire 102 of the coil at a fixed length after the winding is completed. Compared with the traditional hollow coil processing method, the cutting accuracy of the first wire and the tail wire 102 is guaranteed. After the cutting is completed, there is no need to process the first and tail wire 102 ends of the coil separately again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to improving product quality.

[0053] In an optional embodiment, the fixture 2 is provided with a wire guide groove 24 between the core shaft 21 and the start-line fixing piece 22 and between the core shaft 21 and the tail-line fixing piece 23 .

[0054] From the above description, it can be seen that the function of the lead groove 24 is to preset the traction route when pulling the starting wire 101 and the tail wire 102 according to the lead-out angle requirements of the copper wires at the head and tail ends of the coil product, to ensure the relative position accuracy of the starting wire 101 part, the coil and the tail wire 102 part, and to avoid the deviation of the copper wire in the subsequent cutting process. If there is no lead groove 24 structure, the copper wire will be tangled in a mess when winding.

[0055] In an optional embodiment, the jig 2 is provided with a tool groove 25 adapted to the tool 3 between the mandrel 21 and the start-line fixing piece 22 and between the mandrel 21 and the tail-line fixing piece 23, and the distances between the two tool grooves 25 and the mandrel 21 are equal.

[0056] From the above description, it can be known that the function of the knife groove 25 is to assist the knife 3 in ensuring the cutting position accuracy during cutting, thereby ensuring the consistency of product processing.

[0057] In an optional embodiment, the start-line fixing member 22 and the tail-line fixing member 23 are respectively located on opposite sides of the core shaft 21 , and the winding posts 221 of the start-line fixing member 22 and the winding posts 221 of the tail-line fixing member 23 are symmetrically arranged relative to the core shaft 21 .

[0058] From the above description, it can be seen that winding posts 221 are provided on the starting line fixing member 22 and the tail line fixing member 23. The function of the winding posts 221 is to fix the angles of the starting line 101 and the tail line 102 with the core shaft 21, and to ensure the stability of the copper wire structure during cutting, thereby improving the product processing accuracy.

[0059] Please refer to Figures 1 to 12 As shown, the first embodiment of the present invention is: a hollow coil winding method, comprising the steps of: fixing one end of the copper wire to form a starting wire 101; winding the other end of the copper wire on the core shaft 21 for a preset number of turns and fixing it to form a tail wire 102; cutting the starting wire 101 and the tail wire 102 at preset cutting positions at the same distance from the core shaft 21 to obtain a hollow coil 10.

[0060] Please refer to Figures 1 to 12 As shown, the second embodiment of the present invention is based on the first embodiment: specifically comprising the following steps: first, presetting a first fixed point 11 and a second fixed point 111; tinning the copper wire at a preset cutting position, fixing one end of the copper wire at the first fixed point 11 to form a starting line 101; after forming the starting line 101, the copper wire is then pulled onto the core shaft 21 along a preset route for winding; then, the copper wire is pulled onto the core shaft 21, and the core shaft 21 is driven to rotate while causing the first fixed point 11 and the second fixed point 111 to coaxially rotate around the core shaft 21 at the same angular velocity, and after rotating a preset number of times, the other end of the copper wire is pulled out along another preset route, tinned at another preset cutting position of the copper wire, and the other end of the copper wire is fixed at the second fixed point 111 to form a tail line 102. Next, a first cutting point 12 is preset between the first fixed point 11 and the mandrel 21, and a second cutting point 121 is preset between the second fixed point 111 and the mandrel 21, so that the distance from the first cutting point 12 to the mandrel 21 is equal to the distance from the second cutting point 121 to the mandrel 21. After the tail wire 102 is formed, the start wire 101 is cut at the first cutting point 12, and the tail wire 102 is cut at the second cutting point 121. Finally, after cutting, the hollow coil 10 is peeled off the mandrel 21 and the remaining copper wire is removed.

[0061] Please refer to Figures 4 to 8As shown, embodiment three of the present invention is: a winding device, including a frame 1, a jig 2 and a tool 3, the jig 2 is rotatably set on the frame 1, the tool 3 is movably set on the frame 1, the jig 2 is provided with a core shaft 21, a starting wire fixing part 22 and a tail wire fixing part 23, and the tool 3 is used for cutting the copper wire wound between the core shaft 21 and the starting wire fixing part 22 and the copper wire wound between the core shaft 21 and the tail wire fixing part 23 respectively.

[0062] The fixture 2 is provided with a lead groove 24 between the mandrel 21 and the starting line fixture 22 and between the mandrel 21 and the tail line fixture 23. The fixture 2 is provided with a knife groove 25 adapted to the tool 3 between the mandrel 21 and the starting line fixture 22 and between the mandrel 21 and the tail line fixture 23, and the spacing between the two knife grooves 25 and the mandrel 21 is equal. The starting line fixture 22 and the tail line fixture 23 are respectively located on opposite sides of the mandrel 21, and the starting line fixture 22 and the tail line fixture 23 are provided with hook-shaped winding posts 221, and the winding posts 221 of the starting line fixture 22 and the winding posts 221 of the tail line fixture 23 are symmetrically arranged relative to the mandrel 21. The winding posts 221 are provided with a through groove 2211, and the function of the through groove 2211 is to allow the scraping member to extend into, and then the remaining copper wire wound on the winding posts 221 is scraped off along the direction of the through groove 2211.

[0063] Please refer to Figure 7 As shown, the fourth embodiment of the present invention is based on the third embodiment: a wire-releasing mechanism 4, a wire-clamping mechanism 5 and a tinning mechanism 6 are provided on the frame 1, the wire-releasing mechanism 4 is used to release the copper wire to the jig 2, the wire-clamping mechanism 5 is used to clamp the copper wire before it is wound on the starting wire fixing member 22 and after it is wound on the tail wire fixing member 23, and the tinning mechanism 6 is used to tin the surface of the copper wire.

[0064] During operation, the unwinding mechanism 4 first guides the free end of the copper wire to find the clamping mechanism, thereby fixing the free end of the copper wire, and then uses the tinning mechanism 6 to tin a preset position on the surface of the copper wire. The unwinding mechanism 4 pulls the copper wire to find the starting wire fixing piece 22 of the jig 2 and winds it a certain number of times, so that the starting wire 101 part is relatively fixed, and the clamping mechanism acts to tear off the waste copper wire near the free end. The unwinding mechanism 4 pulls the copper wire onto the core shaft 21. Here, it is calculated that the tinning position just corresponds to a preset cutting position. The jig 2 then rotates a certain number of times, and uses the tinning mechanism 6 to tin another preset position on the surface of the copper wire. The jig 2 continues to rotate a certain number of times and then The copper wire is pulled out, and the tail wire fixing part 23 of the jig 2 is found and wound a certain number of times, so that the tail wire 102 part is relatively fixed. Here, the tinning position is calculated to correspond to another preset cutting position. The clamping mechanism fixes the free end of the copper wire again, and the waste copper wire near the free end is torn off. The copper wire wound on the starting wire fixing part 22, the core shaft 21 and the tail wire fixing part 23 is completed. Then, the tool 3 is used to synchronously cut the starting wire 101 and the tail wire 102 at the preset position to obtain a coil product of equal length of the starting wire 101 and the tail wire 102. Finally, the hollow coil 10 is peeled off the core shaft 21, and the remaining copper wire is removed, and the processing can be cyclic.

[0065] Please refer to Figure 7 and 8 As shown, the fifth embodiment of the present invention is based on the fourth embodiment:

[0066] The tool 3 includes a movable tool seat 31 and a cutter 32 and a scraper 33 arranged on the movable tool seat 31. The cutter 32 is used to cut the starting wire 101 and the tail wire 102. The scraper 33 is used to extend into the through groove 2211 on the winding pole 221 and scrape and remove the remaining copper wire wound on the winding pole 221 along the direction of the through groove 2211.

[0067] The wire-releasing mechanism 4 comprises a first movable frame 41 and a wire-releasing needle 42. The first movable frame 41 is movably arranged on the frame 1. The wire-releasing needle 42 is arranged on the first movable frame 41. The wire-releasing needle 42 is used for copper wire-releasing.

[0068] The wire clamping mechanism 5 comprises a second movable frame 51 and a pneumatic clamping block 52 . The second movable frame 51 is movably arranged on the frame 1 . The pneumatic clamping block 52 is arranged on the second movable frame 51 . The pneumatic clamping block 52 is used for clamping the copper wire.

[0069] The tinning mechanism 6 comprises a third movable frame 61 and a tin cup 62 . The third movable frame 61 is movably arranged on the frame 1 . The tin cup 62 is arranged on the third movable frame 61 . The tin cup 62 is used for tinning the copper wire.

[0070] Please refer to Figures 4 to 6As shown in FIG9 , the sixth embodiment of the present invention is based on the fifth embodiment: it also includes a winding feeding mechanism 7, which is used to control the rotation, stop and feeding of the fixture 2, and the winding mechanism includes a driving member 71, a supporting member 72 and a feeding arm 73. The fixture 2 includes:

[0071] The rotating shaft 26 is provided with a mounting hole 261 along the axial direction, and an elastic member 262 is provided in the mounting hole 261;

[0072] A core column 27, one end of which is fixedly connected to the rotating shaft 26, and the other end of which is provided with a core shaft 21, and a side wall of the core column 27 is provided with a plug hole 271;

[0073] The sliding sleeve 28 is provided with an assembly hole 281 for inserting the core column 27 along the axial direction, and a strip hole 282 is provided along the generatrix on the side wall of the sliding sleeve 28. One end of the sliding sleeve 28 is inserted into the mounting hole 261 and connected to the elastic member 262.

[0074] The positioning pin 29 passes through the bar hole 282 and is inserted into the insertion hole 271 .

[0075] The driving member 71 is rotatably disposed on the frame 1 , the supporting member 72 is used to support the core shaft 21 to prevent the coil from falling from the core shaft 21 , and the unloading arm 73 is movably disposed on the frame 1 , and the unloading arm 73 abuts against the positioning pin 29 .

[0076] When in use, the unloading arm 73 is used to pull the sleeve 28 to the side close to the rotating shaft 26 until one end of the strip hole 282 abuts against the positioning pin 29. At this time, the core column 27 is provided with an end of the core shaft 21 extending out of the assembly hole 281 of the sleeve 28, and the rotating shaft 26 rotates under the drive of the driving member 71, thereby driving the core column 27 fixed thereon to rotate, and the copper wire is wound around the core shaft 21 of the core column 27 for winding. After the winding is completed, the unloading arm 73 releases the sleeve 28, and the sleeve 28 is reset under the action of the elastic member 262. The other end of the strip hole 282 abuts against the positioning pin 29, thereby limiting the displacement of the sleeve 28. After the sleeve 28 is reset, the core column 27 retracts into the assembly hole 281 relative to the sleeve 28, and the coil fixed on the core shaft 21 of the core column 27 is peeled off from the winding boss under the support of the sleeve 28, and the unloading is completed. The winding unloading mechanism 7 and the fixture 2 are ingeniously designed and easy to operate, and the unloading position of the coil is easy to set, with high unloading accuracy, thus avoiding damage to the coil during unloading.

[0077] Please refer to Figure 10 to Figure 11As shown, embodiment 7 of the present invention is based on embodiment 5 and also includes a material receiving mechanism 8 for receiving the hollow coil 10. The material receiving mechanism 8 includes a cylinder 81 and a horizontal collecting plate 82 arranged on the frame 1. The cylinder 81 drives the inclined material receiving plate 83 to rise or fall along the inclined surface. The inclined material receiving plate 83 is separated into two or more horizontally parallel material discharge channels 832 by a first partition plate 831. The horizontal collecting plate 82 is separated into two or more horizontally parallel material discharge areas 822 by a second partition plate 821. The material discharge channels 832 are arranged one-to-one with the material receiving areas 822. The discharge end of the material discharge channel 832 is located above the material receiving area 822.

[0078] Because the jig 2 is located above, during the winding process of the jig 2, the cylinder 81 is needed to drive the inclined receiving tray 83 to move downward to avoid the wire-releasing and winding mechanism. After the winding is completed, the cylinder 81 is used to drive the inclined receiving tray 83 to lift up, so that the inclined receiving tray 83 moves to the side of the jig 2 where the material is removed. After the coil is detached from the jig 2, it falls onto the inclined receiving tray 83. Multiple unloading channels 832 are respectively located under multiple jigs 2. The coil is transported to the corresponding receiving area 822 through the unloading channel 832. If a coil has a quality problem, it can be traced back through the corresponding unloading route to check the corresponding jig 2, tool 3, and wire-releasing and winding mechanism, so that the fault point can be quickly and accurately determined, reducing the difficulty of maintenance and debugging equipment operation, thereby facilitating the improvement of production efficiency.

[0079] Please refer to Fig.11 As shown, embodiment eight of the present invention is based on embodiment seven and further includes a cooling mechanism 9, wherein the cooling mechanism 9 includes an air blowing pipe 91 installed on the unloading channel 832, so that the design structure is more compact and reasonable, and air is blown while the fixture 2 rotates, thereby uniformly cooling the fixture 2.

[0080] Embodiment 9 of the present invention is as follows: a hot air heating mechanism is provided on the frame 1, and the hot air heating mechanism is used to heat the copper wire by blowing air during the winding process of the core shaft 21 so that the insulating self-adhesive layer on the surface of the copper wire can be tightly adhered. The hot air heating mechanism includes a third movable frame 61 and an air supply duct, the third movable frame 61 is movably arranged on the frame 1, and the air supply duct is arranged on the third movable frame 61, and the air supply duct is used to blow hot air of 160°C to 190°C to the core shaft 21 for 10s to 30s.

[0081] In summary, the present invention provides a hollow coil winding method and winding device, and the winding method specifically includes the steps of: fixing one end of the copper wire used to wind the hollow coil, and then winding the rest of the wire into a circle on the core shaft, and then leading out and fixing the other end of the copper wire after winding a certain number of circles, so that the positions of the starting wire, coil and tail wire of the copper wire are relatively fixed, and finally cutting at the preset positions on the starting wire and tail wire of the copper wire by using a cutter to obtain a hollow coil product. The first fixed point and the second fixed point rotate synchronously with the core shaft coaxially, so as to ensure the relative position accuracy of the starting wire part, coil and tail wire part, and to achieve the subsequent fixed-length cutting of the starting wire part and tail wire part. The winding device includes a jig and a cutter. The core shaft on the jig is used for winding, the starting wire fixing piece is used to fix the starting wire end of the copper wire, and the tail wire fixing piece is used to fix the tail wire end of the copper wire. The cutter avoids the copper wire and the jig during the lead-in and winding processes. After the winding is completed, the starting wire and the tail wire of the coil are cut off at a fixed length. Compared with the traditional hollow coil processing method, the cutting accuracy of the starting wire and the tail wire is guaranteed. After the cutting is completed, there is no need to process the starting and tail wire ends of the coil separately again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to improving product quality.

[0082] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hollow coil winding device, characterized in that: It includes a frame, a jig and a cutter, wherein the jig is rotatably arranged on the frame, the cutter is movably arranged on the frame, the jig is provided with a mandrel, a start-line fixing part and a tail-line fixing part, and the cutter is used to cut off the copper wire wound between the mandrel and the start-line fixing part and the copper wire wound between the mandrel and the tail-line fixing part respectively; The jig is provided with a wire guide groove between the mandrel and the starting wire fixture and between the mandrel and the tail wire fixture; the jig is provided with a knife groove adapted to the tool between the mandrel and the starting wire fixture and between the mandrel and the tail wire fixture, and the spacing between the two knife grooves and the mandrel is equal; the starting wire fixture and the tail wire fixture are respectively located on opposite sides of the mandrel, and the starting wire fixture and the tail wire fixture are provided with hook-shaped winding posts, and the winding posts of the starting wire fixture and the winding posts of the tail wire fixture are symmetrically arranged relative to the mandrel; the winding posts are provided with a through groove for the scraper to extend into, and the scraper scrapes and removes the remaining copper wire wound on the winding posts along the through groove direction; The frame is provided with a wire-releasing mechanism, a wire-clamping mechanism and a tinning mechanism. The wire-releasing mechanism is used to release the copper wire to the jig, the wire-clamping mechanism is used to clamp the copper wire before it is wound on the starting wire fixture and after it is wound on the tail wire fixture, and the tinning mechanism is used to tin the surface of the copper wire; The wire-releasing mechanism first guides the free end of the copper wire to find the clamping mechanism, thereby fixing the free end of the copper wire, and then uses the tinning mechanism to tin a preset position on the surface of the copper wire. The wire-releasing mechanism pulls the copper wire to find the starting wire fixing part of the jig and winds it a certain number of times, so that the starting wire part is relatively fixed; the clamping mechanism acts to tear off the waste copper wire near the free end, and the wire-releasing mechanism pulls the copper wire onto the core shaft. After calculation, the tinning position just corresponds to a preset cutting position. The jig then rotates a certain number of times, and uses the tinning mechanism to tin another preset position on the surface of the copper wire. The jig continues to rotate. After a certain number of turns, the copper wire is pulled out, and the tail wire fixture of the fixture is found and wound a certain number of times so that the tail wire part is relatively fixed. After calculation, the tinning position just corresponds to another preset cutting position. The clamping mechanism fixes the free end of the copper wire again, and the waste copper wire near the free end is torn off. The copper wire wrapped around the starting wire fixture, the core shaft and the tail wire fixture is completed. Then use the tool to simultaneously cut the starting wire and the tail wire at the preset position to obtain a coil product with equal length of the starting wire and the tail wire. Finally, the hollow coil is peeled off the core shaft and the remaining copper wire is removed.

2. The air-core coil winding device according to claim 1, characterized in that: The tool comprises a movable knife seat and a cutter and a scraper arranged on the movable knife seat. The cutter is used for cutting the starting wire and the tail wire, and the scraper is used for extending into the through groove on the winding column and scraping off the remaining copper wire wound on the winding column along the through groove direction.

3. The air-core coil winding device according to claim 1, characterized in that: The wire-releasing mechanism comprises a first movable frame and a wire-releasing needle. The first movable frame is movably arranged on the frame. The wire-releasing needle is arranged on the first movable frame. The wire-releasing needle is used for copper wire-releasing.

4. The air-core coil winding device according to claim 1, characterized in that: The wire clamping mechanism comprises a second movable frame and a pneumatic clamping block. The second movable frame is movably arranged on the frame. The pneumatic clamping block is arranged on the second movable frame. The pneumatic clamping block is used for clamping the copper wire.

5. The air-core coil winding device according to claim 1, characterized in that: The tinning mechanism comprises a third movable frame and a tin cup. The third movable frame is movably arranged on the frame. The tin cup is arranged on the third movable frame. The tin cup is used for tinning the copper wire.

6. The air-core coil winding device according to claim 1, characterized in that: It also includes a winding and feeding mechanism, which is used to control the rotation, stop and feeding of the fixture, and the winding mechanism includes a driving part, a supporting part and a feeding arm; the fixture includes: The rotating shaft is provided with a mounting hole along the axial direction, and an elastic member is arranged in the mounting hole; A core column, one end of which is fixedly connected to the rotating shaft, and the other end of which is provided with a core shaft, and a side wall of the core column is provided with a plug hole; The sliding sleeve is provided with an assembly hole for inserting the core column along the axial direction, and a strip hole is provided along the busbar on the side wall of the sliding sleeve, and one end of the sliding sleeve is inserted into the installation hole and connected to the elastic member; A positioning pin is inserted into the socket after passing through the bar hole; The driving member is rotatably arranged on the frame, the supporting member is used to support the core shaft to prevent the coil from falling from the core shaft, and the unloading arm is movably arranged on the frame, and the unloading arm abuts against the positioning pin.

7. The air-core coil winding device according to claim 1, characterized in that: It also includes a material receiving mechanism, which is used to hold the hollow coils. The material receiving mechanism includes a cylinder and a horizontal collecting plate arranged on the frame. The cylinder drives the inclined material receiving plate to rise or fall along the inclined surface. The inclined material receiving plate is divided into two or more horizontally parallel material discharge channels by a first partition. The horizontal collecting plate is divided into two or more horizontally parallel material discharge areas by a second partition. The material discharge channels and the material receiving areas are arranged one by one, and the discharge end of the material discharge channel is located above the material receiving area.

8. The air-core coil winding device according to claim 7, characterized in that: It also includes a cooling mechanism, which includes an air blowing pipe installed on the unloading channel, and the air blowing pipe is used for blowing air to the rotating fixture.

9. A method for winding an air-core coil used in the air-core coil winding device according to any one of claims 1 to 8, characterized in that: A first cutting point is preset between the first fixed point and the core shaft, and a second cutting point is preset between the second fixed point and the core shaft, so that the distance from the first cutting point to the core shaft is equal to the distance from the second cutting point to the core shaft. After the tail line is formed, the start line is cut at the first cutting point and the tail line is cut at the second cutting point at the same time.

10. The air-core coil winding method according to claim 9, characterized in that: The method specifically includes the following steps: first, presetting a first fixed point and a second fixed point; tinning the copper wire at a preset cutting position, fixing one end of the copper wire at the first fixed point to form a starting line; after the starting line is formed, the copper wire is then pulled onto a core shaft along a preset route for winding; then, the copper wire is pulled onto the core shaft, and the first fixed point and the second fixed point are coaxially rotated around the core shaft at the same angular velocity while the core shaft is driven to rotate, and after rotating a preset number of times, the other end of the copper wire is pulled out along another preset route, tinning is performed at another preset cutting position of the copper wire, and the other end of the copper wire is fixed at the second fixed point to form a tail line; then, a first cutting point is presetting between the first fixed point and the core shaft, and a second cutting point is presetting between the second fixed point and the core shaft, so that the distance from the first cutting point to the core shaft is equal to the distance from the second cutting point to the core shaft, and after the tail line is formed, the starting line is cut at the first cutting point and the tail line is cut at the second cutting point; finally, after cutting, the hollow coil is peeled off the core shaft and the remaining copper wire is removed.

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