A winding device and its winding method

Abstract

The present invention relates to the technical field of transformer coil winding, and discloses a winding device and a winding method thereof. The winding mold includes a shaping template and a tower-shaped stacking block alternately arranged on the outer peripheral surface. A support column is arranged at the central position inside the winding mold, and a chassis is arranged at the bottom of the support column. A radial displacement mechanism is arranged between the inner side of each tower-shaped stacking block and the support column. An axial lifting mechanism for driving the tower-shaped stacking block and the radial displacement mechanism to move up and down is arranged inside the winding mold. A demolding mechanism for separating the wound wire from the winding mold is arranged between the inner side of the shaping template and the support column. The complex process of rewinding into an inverted cake is simplified, manpower is saved, and the winding efficiency is improved. Moreover, by removing the symmetrically paired shaping templates and tower-shaped stacking blocks, the coil wound by the winding mold is elliptical or rectangular, so that the coil winding has the advantages of small overall occupied volume and wire saving.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer coil winding, and particularly relates to a winding device and a winding method thereof. Background Art

[0002] The transformer winding refers to the wire wound into a coil inside the transformer, which is the part for energy transfer inside the transformer and is a basic component of the transformer. Generally, the transformer winding is divided into two types: layer type and pancake type. Among them, the pancake winding is a coil formed by arranging wire pancakes axially after the wire is made into wire pancakes. The pancake winding has good heat dissipation performance, high mechanical strength, and strong anti-voltage impact ability. Therefore, the pancake winding has a wider application range and can be applied to medium and large transformers. The wire pancakes are divided into two types: positive pancakes and negative pancakes:

[0003] (1) The positive pancake is wound from the inner diameter side to the outer diameter side of the winding. The winding is relatively simple. As the winding machine rotates, the employee can hold the wire to complete the winding of the positive pancake.

[0004] (2) The negative pancake is wound from the outer diameter side to the inner diameter side of the winding. It cannot be directly completed by the winding machine. First, a temporary wire pancake (temporary positive pancake) must be wound, and then the temporary wire pancake (positive pancake) is turned over into a negative pancake by manual wire turning.

[0005] Since the negative pancake cannot be directly completed by the winding machine, it is necessary to first wind a temporary wire pancake (temporary positive pancake), and then turn the temporary wire pancake (positive pancake) into a negative pancake by manual wire turning. This makes the winding time longer, consumes a lot of manpower, and the overall winding efficiency is low.

[0006] Secondly, in the actual application process, we found that traditional winding machines and winding methods can only make the pancake coil into a circular shape. If the pancake coil is wound into an ellipse or a rectangle, there will be advantages such as the overall occupied volume of the coil winding becoming smaller and more wire being saved. However, it cannot be achieved by using traditional winding machines and winding methods. The main reason for the inability to achieve is the above-mentioned process of "turning over into a negative pancake" during the winding process. Taking a rectangular coil as an example, the rectangular mold used for the rectangular coil is a cuboid composed of four straight sides and four arcs. Due to the existence of the tangent at the transition between the arc surface and the plane of the rounded corner, the wire pancake becomes loose during the process of "turning over the pancake", and cannot meet the usage requirements. Summary of the Invention

[0007] (I) Technical Problems to be Solved

[0008] The purpose of the present invention is to provide a winding device and a winding method thereof to solve the defects in the prior art that manual turning over into a negative pancake is required, the winding efficiency is low, and due to the limitation of the process of "turning over into a negative pancake", the coil can only be wound into a circular shape. (II) Summary of the Invention

[0010] To solve the above technical problems, the present invention provides the following technical solution: A winding device, including a winding die, the bottom of the winding die is rotatably connected to a base, a rotation driving mechanism for driving the winding die to rotate is arranged inside the base, the winding die further includes a shaping template and a tower-shaped stacking block alternately arranged on the outer peripheral surface, a support column is arranged at the central position inside the winding die, a chassis is arranged at the bottom of the support column, and a radial displacement mechanism for driving the tower-shaped stacking block to move radially is arranged between the inner side of each tower-shaped stacking block and the support column, an axial lifting mechanism for driving the tower-shaped stacking block and the radial displacement mechanism to move up and down is arranged inside the winding die, and a demolding mechanism for separating the wound wire from the winding die is arranged between the inner side of the shaping template and the support column;

[0011] The radial displacement mechanism includes a sleeve slidably connected to the support column, a connecting plate is arranged at the center above the winding die, a screw rod lifting assembly for changing the vertical height of the connecting plate is arranged between the base and the connecting plate, and a connecting rod transmission assembly is arranged between the outer wall of the sleeve, the inner wall of the tower-shaped stacking block and the connecting plate

[0012] Preferably, the rotation driving mechanism includes a first motor, the output end of the first motor is connected to a first reducer, the output end of the first reducer passes through the base and is drivingly connected to a first driving gear, a first driven gear is engaged with one side of the first driving gear, and the first driven gear is fixedly connected to the winding die.

[0013] Preferably, the screw rod lifting assembly includes a second motor arranged inside the base, the output end of the second motor is connected to a second reducer, the output end of the second reducer is drivingly connected to a screw rod lifter, the bottom of the screw rod lifter is fixedly connected to the base, a first screw rod is screwed inside the screw rod lifter, and the top of the first screw rod is rotatably connected to the connecting plate.

[0014] Preferably, the connecting rod transmission assembly includes a first connecting rod, one end of the first connecting rod is hinged to the connecting plate, the other end is hinged to a second connecting rod, one end of the second connecting rod is hinged to the upper part of the side wall of the sleeve, the other end is hinged to the tower-shaped stacking block, a third connecting rod is arranged in parallel below the second connecting rod, one end of the third connecting rod is hinged to the side wall of the sleeve, and the other end is hinged to the tower-shaped stacking block.

[0015] Preferably, the axial lifting mechanism includes a third motor disposed within the base. An inner housing is disposed above the third motor, and the inner housing is fixedly connected to the base. A reversing speed reducer is disposed at the output end of the third motor, and the reversing speed reducer is fixedly connected to the inner housing. The output end of the reversing speed reducer passes through the bottom wall of the inner housing and is drivingly connected to a second driving gear. A second driven gear is engaged with the inner side of one side of the second driving gear within the inner housing. A transmission shaft is fixedly connected to the central position of the second driven gear. One end of the transmission shaft is rotatably connected to the inner housing, and the other end is fixedly connected to a synchronous gear. A third driven gear is engaged with the outer peripheral surface of the synchronous gear. A second screw rod is key-connected to the inside of the third driven gear. The other end of the second screw rod is rotatably connected to the chassis. The middle outer side of the second screw rod is threadedly connected to the sleeve.

[0016] Preferably, the demolding mechanism includes an inclined wedge translation assembly. The inclined wedge translation assembly is provided in two sets, upper and lower. One end of the inclined wedge translation assembly is welded to the shaping template, and the other end is fixedly connected to a support sleeve. The support sleeve is fixedly connected to the support column. A transmission rod is fixedly provided between the upper and lower inclined wedge translation assemblies. A third screw rod is disposed inside the lower inclined wedge translation assembly. The third screw rod is threadedly connected to the inclined wedge assembly. The bottom end of the third screw rod passes through the chassis and is fixedly connected to a fourth driven gear. A third driving gear is disposed on one side of the fourth driven gear. A fifth driven gear is engaged with the center of the other side of the chassis of the fourth driven gear. The fifth driven gear is rotatably connected to the bottom of the chassis. A sliding assembly is disposed between the bottom of the shaping template and the chassis.

[0017] Preferably, the inclined wedge translation assembly includes a fixed block. One side of the fixed block is fixedly connected to the support sleeve, and the other side is slidably connected to an inclined wedge through a slideway. A slider is slidably connected to the inclined surface side of the inclined wedge through a slideway. The slider is fixedly connected to the shaping template.

[0018] Preferably, the sliding assembly includes an opening formed in the chassis for the bottom of the shaping template to pass through and having a length greater than the thickness of the shaping template. Rollers are rotatably provided at the top and bottom of the chassis. Both of the rollers are rotatably connected to the shaping template.

[0019] A winding method, which is used for the above-mentioned winding equipment, includes the following steps:

[0020] S1: Start the rotation driving mechanism to drive the winding mold to rotate, wind the wire from the inner diameter side to the outer diameter side of the winding mold to form a positive cake, and complete the winding of the first layer of the coil;

[0021] S2: After the first layer of coil is wound, start the radial displacement mechanism to extend the tower-shaped stacking block to the outside of the shaping template, and wind the wire from the lower part with a larger diameter to the upper part with a smaller diameter, winding the same number of turns as the positive cake;

[0022] S3: Start the radial displacement mechanism again to retract the tower-shaped stacking block into the inside of the shaping template. The wire wound on the tower-shaped stacking block falls above the positive cake, completing the winding of the second layer of coil;

[0023] S4: Above the second layer of coil, wind the third layer of coil by rotating the winding mold, and start the axial lifting mechanism to raise the height of the tower-shaped stacking block and the radial displacement mechanism. Repeat the methods in steps 2 and 3 to complete the winding of the fourth layer of coil;

[0024] S5: Repeat steps 1, 2, 3, and 4 until the winding that complies with the regulations is completed. Then, use the demolding mechanism to move the shaping template to the central position to separate the winding from the winding mold, and use an external lifting device to take out the winding.

[0025] (III) Beneficial effects

[0026] The winding equipment and its winding method provided by the present invention have the following advantages:

[0027] 1. By setting the tower-shaped stacking block and winding the wire on the tower-shaped stacking block, using the radial displacement mechanism to control the tower-shaped stacking block to extend or retract inside and outside the circumferential range enclosed by the shaping template, it simplifies the complex process of workers winding the temporary positive cake and then rewinding it into an inverse cake. The wire wound on the tower-shaped stacking block is directly wound into an inverse cake. And by using the axial lifting mechanism, after completing the winding of one layer of coil, the height of the tower-shaped stacking block and the radial displacement mechanism is raised to prepare for the next layer of coil, saving manpower and improving the winding efficiency at the same time.

[0028] 2. By surrounding the shaping template of the winding mold and the tower-shaped stacking block into a circle, a circular winding can be wound. Also, by removing the symmetrically paired shaping templates and tower-shaped stacking blocks, the coil wound by the winding mold can be made into an elliptical or rectangular shape, avoiding the situation that the wire cake becomes loose when directly using an elliptical wire mold and a rectangular wire mold to rewind the inverse cake and cannot meet the usage requirements. The wound coil has the advantages of small overall occupied volume and more wire saving. Description of the drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0031] Figure 2 Schematic three-dimensional structure diagram inside the base of the present invention;

[0032] Figure 3 Schematic three-dimensional structure diagram of the radial displacement mechanism in the present invention;

[0033] Figure 4 Schematic three-dimensional structure diagram of the axial lifting mechanism in the present invention;

[0034] Figure 5 is Figure 3 Partial enlarged schematic diagram at position A in

[0035] Figure 6 is Figure 4 Partial enlarged schematic diagram at position B in

[0036] Figure 7 Schematic three-dimensional structure diagram of the demolding mechanism in the present invention;

[0037] Figure 8 Schematic three-dimensional structure diagram of the sliding component in the present invention;

[0038] Figure 9 Schematic plan view of the second embodiment in the present invention;

[0039] Figure 10 Flow chart of the winding method of the winding device of the present invention.

[0040] Description of the reference numerals in the figures: 1. winding die; 101. shaping template; 102. tower-shaped stacking block; 2. base; 3. rotation driving mechanism; 31. first motor; 32. first reducer; 33. first driving gear; 34. first driven gear; 4. support column; 5. chassis; 6. radial displacement mechanism; 61. sleeve; 62. connecting plate; 63. screw lifting assembly; 631. second motor; 632. second reducer; 633. screw elevator; 634. first screw; 64. connecting rod transmission assembly; 641. first connecting rod; 642. second connecting rod; 643. third connecting rod; 7. axial lifting mechanism; 71. third motor; 72. inner shell; 73. reversing reducer; 74. second driving gear; 75. second driven gear; 76. synchronous gear; 77. third driven gear; 78. second screw; 8. demoulding mechanism; 81. wedge translation assembly; 811. fixed block; 812. wedge; 813. slider; 82. support sleeve; 83. third screw; 84. fourth driven gear; 85. third driving gear; 86. fifth driven gear; 87. sliding assembly; 88. transmission rod; 871. opening; 872. roller. Detailed implementation mode

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Embodiment 1:

[0043] Please refer to Figure 1 and Figure 2A winding device comprises a winding die 1, the bottom of the winding die 1 is rotatably connected to a base 2, a rotating driving mechanism 3 for driving the winding die 1 to rotate is arranged inside the base 2, wherein the rotating driving mechanism 3 comprises a first motor 31, the output end of the first motor 31 is connected to a first reducer 32, the output end of the first reducer 32 is connected to a first driving gear 33 through the base 2, a first driven gear 34 is meshed on one side of the first driving gear 33, the first driven gear 34 is fixedly connected to the winding die 1, the first motor 31 is started, the first driving gear 33 is driven by the first reducer 32, and the first driven gear 34 is driven to realize the rotation of the winding die 1 for winding the wire.

[0044] The winding mold 1 also includes a shaping template 101 and a tower-shaped stacking block 102 alternately arranged on the outer surface, wherein the step length and height of the tower-shaped stacking block 102 are both greater than the width and length of the cross-section of the wound wire. In addition, the number of the shaping template 101 and the tower-shaped stacking block 102 is set according to the diameter of the winding to be wound, forming a circle for winding a circular coil winding.

[0045] In this example, see Figure 2 and Figure 3 A support column 4 is provided at the inner center of the winding mold 1 to fix and support the shaping template 101 and the tower-shaped stacking block 102. A chassis 5 is provided at the bottom of the support column 4 to support the coil. A radial displacement mechanism 6 for driving the tower-shaped stacking block 102 to move radially is provided between the inner side of each tower-shaped stacking block 102 and the support column 4, wherein the radial displacement mechanism 6 includes a sleeve 61 slidably connected to the support column 4. A connecting plate 62 is provided at the upper center of the winding mold 1, and a radial displacement mechanism 6 for driving the tower-shaped stacking block 102 to move radially is provided between the base 2 and the connecting plate 62. A screw lifting assembly 63 is used to change the vertical height of the connecting plate 62. A connecting rod transmission assembly 64 is provided between the outer wall of the sleeve 61, the inner wall of the tower-shaped stacking block 102 and the connecting plate 62. The screw lifting assembly 63 drives the first screw 634 in the center that is screwed thereto to rise and fall, thereby causing the top connecting plate 62 to rise or fall. The connecting rod transmission assembly 64, which is hinged to the connecting plate 62 and the tower-shaped stacking block 102, drives the tower-shaped stacking block 102 to move radially, thereby realizing the outward expansion and inward recovery of the tower-shaped stacking block 102.

[0046] Furthermore, the screw lifting assembly 63 includes a second motor 631 arranged in the base 2, the output end of the second motor 631 is connected to the second reducer 632, the output end of the second reducer 632 is transmission-connected to the screw lifting machine 633, the bottom of the screw lifting machine 633 is fixedly connected to the base 2, the interior of the screw lifting machine 633 is threaded with a first screw 634, wherein the first screw 634 passes through the support column 4 and the transmission shaft in the axial lifting mechanism, the top end of the first screw 634 is rotationally connected to the connecting plate 62, the second motor 631 is started, and the screw lifting machine 633 is driven to operate, thereby realizing the up and down movement of the first screw 634, the top end of the first screw 634 is rotationally connected to the connecting plate 62, and then drives the connecting plate 62 to rise and fall.

[0047] For further information, see Figure 5 The connecting rod transmission assembly 64 includes a first connecting rod 641, one end of the first connecting rod 641 is hinged to the connecting plate 62, and the other end is hinged to the second connecting rod 642, one end of the second connecting rod 642 is hinged to the upper part of the side wall of the sleeve 61, and the other end is hinged to the tower-shaped stacking block 102, and a third connecting rod 643 is arranged parallel to the lower side of the second connecting rod 642, one end of the third connecting rod 643 is hinged to the side wall of the sleeve 61, and the other end is hinged to the tower-shaped stacking block 102. When the tower-shaped stacking block 102 needs to be extended to the outside of the shaping template 101, the first screw 634 is screwed The rod lift 633 rises, so that the height of the connecting plate 62 is increased, and then the first connecting rod 641 is pulled. The first connecting rod 641 pulls the second connecting rod 642 hinged thereto close to one side of the tower-shaped stacking block 102. The second connecting rod 642 rotates along the intersection axis with the sleeve 61, driving the tower-shaped stacking block 102 to expand outward and extend to the outside of the forming template 101. The bottom end of the tower-shaped stacking block 102 moves synchronously with the top end of the tower-shaped stacking block 102 through the hinge relationship with the third connecting rod 643, and always remains parallel to the forming template 101.

[0048] In this example, see Figure 1 , Figure 4 and Figure 6, an axial lifting mechanism 7 for driving the tower-shaped stacking block 102 and the radial displacement mechanism 6 to move up and down is arranged inside the winding die 1. The axial lifting mechanism 7 includes a third motor 71 arranged in the base 2. An inner housing 72 is arranged above the third motor 71. The inner housing 72 is fixedly connected to the base 2. The output end of the third motor 71 is provided with a commutation reducer 73. The commutation reducer 73 is fixedly connected to the inner housing 72. The output end of the commutation reducer 73 passes through the bottom wall of the inner housing 72 and is drivingly connected with a second driving gear 74. A second driven gear 75 is engaged inside the inner housing 72 on one side of the second driving gear 74. A transmission shaft (not shown in the figure) is fixedly connected to the central position of the second driven gear 75. One end of the transmission shaft is rotatably connected to the inner housing 72, and the other end is fixedly connected to a synchronous gear 76. A third driven gear 77 is engaged with the outer peripheral surface of the synchronous gear 76. A second screw rod 78 is key-connected inside the third driven gear 77. The other end of the second screw rod 78 is rotatably connected to the chassis 5. The middle outer side of the second screw rod 78 is in threaded connection with a sleeve 61. Starting the third motor 71 at the bottom drives the second driving gear 74 to rotate, drives the second driven gear 75 to rotate. Through the transmission of the transmission shaft, the synchronous gear 76 is driven to rotate. A plurality of third driven gears 77 are arranged on one side of the outer peripheral surface of the synchronous gear 76. The number of the third driven gears 77 is also adapted to the diameter size of the entire winding die 1. When the third driven gear 77 rotates, it drives each second screw rod 78 key-connected thereto to rotate. Also, through the threaded connection between the second screw rod 78 and the sleeve 61, the entire sleeve 61 is lifted or lowered, so that the tower-shaped stacking block 102 and the radial displacement mechanism 6 can move up and down.

[0049] In this embodiment, please refer to Figure 1 、 Figure 7 and Figure 8, a demolding mechanism 8 for separating the wound wire from the winding die 1 is provided between the inner side of the shaping template 101 and the support column 4. Specifically, the demolding mechanism 8 includes a wedge translation assembly 81. The wedge translation assembly 81 is arranged in two sets, upper and lower. One end of the wedge translation assembly 81 is welded to the shaping template 101, and the other end is fixedly connected to a support sleeve 82. The support sleeve 82 is fixedly connected to the support column 4. A transmission rod 88 is fixedly arranged between the two sets of upper and lower wedge translation assemblies 81. Through the transmission rod 88, the two sets of wedge translation assemblies 81 operate simultaneously. A third screw 83 is arranged inside the lower wedge translation assembly 81. The third screw 83 is threadedly connected to the wedge translation assembly 81. The bottom end of the third screw 83 passes through the chassis 5 and is fixedly connected to a fourth driven gear 84. A third driving gear 85 is arranged on one side of the fourth driven gear 84. A fifth driven gear 86 meshes with the center of the other side of the chassis 5 of the fourth driven gear 84. The fifth driven gear 86 is rotatably connected to the bottom of the chassis 5. A sliding assembly 87 is arranged between the bottom of the shaping template 101 and the chassis 5. During use, only the worker needs to hold a wrench and align it with the notch below the third driving gear 85, and rotate one of the third driving gears 85 to drive the fourth driven gear 84 to rotate a certain angle, so that the fifth driven gear 86 rotates, driving other fourth driven gears 84 meshing with the fifth driven gear 86 to rotate, thereby driving the third screw 83 screwed to the wedge translation assembly 81 to rotate, realizing the up and down movement of the wedge 812 in the wedge translation assembly 81.

[0050] Further, please refer to Figure 7 , the wedge translation assembly 81 includes a fixed block 811. One side of the fixed block 811 is fixedly connected to the support sleeve 82, and the other side is slidably connected to a wedge 812 through a slideway. One side of the inclined surface of the wedge 812 is slidably connected to a slider 813 through a slideway. The slider 813 is fixedly connected to the shaping template 101. During the up and down movement of the wedge 812, the horizontal position of the slider 813 is pushed to change, thereby changing the horizontal position of the shaping template 101. When demolding is required, by rotating the third screw 83, the wedge 812 is controlled to move towards the direction close to the chassis 5, and the slider 813 will move towards the direction close to the support column 4, and the diameter of the entire circle formed by the shaping template 101 becomes smaller, thereby realizing demolding.

[0051] Further, please refer to Figure 8 , the sliding assembly 87 includes an opening 871 opened on the chassis 5 for the bottom of the shaping template 101 to pass through and with a length greater than the thickness of the shaping template 101. Rollers 872 are rotatably arranged on both the top and bottom of the chassis 5. Both of the two rollers 872 are rotatably connected to the shaping template 101. When the shaping template 101 contracts inward, the roller 827 rolls along the top and bottom surfaces of the chassis 5, and the shaping template 101 moves from the side of the opening 871 far from the support column 4 towards the side close to the support column 4.

[0052] The present application embodiment discloses a winding method, which is used for the above-mentioned winding device, please refer to Figure 1 , Figure 2 and Figure 10 The following steps are involved:

[0053] S1: Start the rotary drive mechanism 3 to drive the winding die 1 to rotate, and wind the wire from the inner diameter side to the outer diameter side of the winding die 1 to form a positive cake, completing the winding of the first layer of coils;

[0054] S2: After the first layer of coils is wound, the radial displacement mechanism 6 is started to extend the tower-shaped stacking block 102 to the outside of the shaping template 101, and the wire is wound from the lower part with a longer diameter to the upper part with a shorter diameter, with the same number of turns as the positive cake;

[0055] S3: The radial displacement mechanism 6 is started again to retract the tower-shaped stacking block 102 to the inside of the shaping template 101, and the wire wound on the tower-shaped stacking block 102 falls to the top of the positive pancake, completing the winding of the second layer of coils;

[0056] S4: above the second layer of coils, the third layer of coils is wound by rotating the winding mold 1, and the axial lifting mechanism 7 is started to raise the height of the tower-shaped stacking block 102 and the radial displacement mechanism 6, and the method of steps 2 and 3 is repeated to complete the winding of the fourth layer of coils;

[0057] S5: Repeat steps 1, 2, 3 and 4 until the winding of the specified compound winding is completed, and then use the demoulding mechanism 8 to move the shaping template 101 to the center position to separate the winding from the winding mold 1, and use external lifting equipment to take out the winding. Embodiment 2:

[0058] See also Figure 9 A winding device comprises a winding die 1, the bottom of the winding die 1 is rotatably connected to a base 2, a rotating driving mechanism 3 for driving the winding die 1 to rotate is arranged inside the base 2, wherein the rotating driving mechanism 3 comprises a first motor 31, the output end of the first motor 31 is connected to a first reducer 32, the output end of the first reducer 32 is connected to a first driving gear 33 through the base 2, a first driven gear 34 is meshed on one side of the first driving gear 33, the first driven gear 34 is fixedly connected to the winding die 1, the first motor 31 is started, the first driving gear 33 is driven by the first reducer 32, and the first driven gear 34 is driven to realize the rotation of the winding die 1 for winding the wire.

[0059] The winding die 1 further includes a sizing template 101 and a tower-shaped stacking block 102 alternately arranged on the outer peripheral surface. The number of the sizing template 101, the sizing template 101 and the tower-shaped stacking block 102 is set according to the diameter of the winding to be wound. The sizing template 101 and the tower-shaped stacking block 102 in the symmetric position are disassembled. The sizing template 101 and the tower-shaped stacking block 102 enclose an ellipse for winding an elliptical coil winding. The coil is wound closely around the sizing template 101. For winding the positive cake and the negative cake, the same winding method as in the first embodiment is used. Finally, an elliptical coil winding is formed, which has the advantages that the volume occupied by the whole coil winding becomes smaller and more wire materials are saved.

[0060] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A winding device, comprising a winding die (1), the bottom of the winding die (1) being rotatably connected to a base (2), the base (2) being provided with a rotation drive mechanism (3) for driving the winding die (1) to rotate, characterized in that: The winding die (1) further comprises a shaping template (101) and a tower-shaped stacking block (102) alternately arranged on the outer peripheral surface; a support column (4) is arranged at the inner center of the winding die (1); a bottom plate (5) is arranged at the bottom of the support column (4); a radial displacement mechanism (6) for driving the tower-shaped stacking block (102) to move radially is arranged between the inner side of each tower-shaped stacking block (102) and the support column (4); an axial lifting mechanism (7) for driving the tower-shaped stacking block (102) and the radial displacement mechanism (6) to move up and down is arranged inside the winding die (1); and a demoulding mechanism (8) for separating the wound wire from the winding die (1) is arranged between the inner side of the shaping template (101) and the support column (4); The radial displacement mechanism (6) comprises a sleeve (61) slidably connected to the support column (4); a connecting plate (62) is provided at the center above the winding die (1); a screw lifting assembly (63) for changing the vertical height of the connecting plate (62) is provided between the base (2) and the connecting plate (62); and a connecting rod transmission assembly (64) is provided between the outer wall of the sleeve (61), the inner wall of the tower-shaped stacking block (102) and the connecting plate (62).

2. A winding device according to claim 1, characterized in that: The rotary drive mechanism (3) comprises a first motor (31), the output end of the first motor (31) being connected to a first reducer (32), the output end of the first reducer (32) being transmission-connected to a first driving gear (33) through a base (2), a first driven gear (34) being meshed on one side of the first driving gear (33), and the first driven gear (34) being fixedly connected to the winding die (1).

3. A winding device according to claim 1, characterized in that: The screw lift assembly (63) comprises a second motor (631) arranged in the base (2); the output end of the second motor (631) is connected to a second reducer (632); the output end of the second reducer (632) is drivingly connected to a screw lift (633); the bottom of the screw lift (633) is fixedly connected to the base (2); a first screw (634) is screwed inside the screw lift (633); and the top end of the first screw (634) is rotatably connected to the connecting plate (62).

4. A winding device according to claim 1, characterized in that: The connecting rod transmission assembly (64) comprises a first connecting rod (641), one end of the first connecting rod (641) is hinged to the connecting plate (62), and the other end is hinged to a second connecting rod (642), one end of the second connecting rod (642) is hinged to the upper part of the side wall of the sleeve (61), and the other end is hinged to the tower-shaped stacking block (102), and a third connecting rod (643) is arranged parallel to the lower side of the second connecting rod (642), one end of the third connecting rod (643) is hinged to the side wall of the sleeve (61), and the other end is hinged to the tower-shaped stacking block (102).

5. A winding device according to claim 1, characterized in that: The axial lifting mechanism (7) comprises a third motor (71) arranged in the base (2); an inner housing (72) is arranged above the third motor (71); the inner housing (72) is fixedly connected to the base (2); a reversing reducer (73) is arranged at the output end of the third motor (71); the reversing reducer (73) is fixedly connected to the inner housing (72); the output end of the reversing reducer (73) passes through the bottom wall of the inner housing (72) and is transmission-connected to a second driving gear (74); a side of the inner housing (72) of the second driving gear (74) is provided with a second driving gear (74); A second driven gear (75) is used for internal meshing, wherein a transmission shaft is fixedly connected to the center position of the second driven gear (75), one end of the transmission shaft is rotationally connected to the inner housing (72), and the other end is fixedly connected to a synchronous gear (76), a third driven gear (77) is meshed on the outer peripheral surface of the synchronous gear (76), a second screw rod (78) is connected to the inner key of the third driven gear (77), the other end of the second screw rod (78) is rotationally connected to the chassis (5), and the middle outer side of the second screw rod (78) is threadedly connected to the sleeve (61).

6. A winding device according to claim 1, characterized in that: The demoulding mechanism (8) comprises an inclined wedge translation assembly (81), wherein the inclined wedge translation assembly (81) is arranged into two groups, one end of the inclined wedge translation assembly (81) is welded to the molding template (101), and the other end is fixedly connected to a support sleeve (82), and the support sleeve (82) is fixedly connected to the support column (4), a transmission rod (88) is fixedly arranged between the upper and lower groups of the inclined wedge translation assemblies (81), and a third screw rod (83) is arranged inside the lower inclined wedge translation assembly (81), and the third screw rod (83) is fixedly arranged between the upper and lower groups of the inclined wedge translation assemblies (81). 3) is threadedly connected to the inclined wedge translation assembly (81), the bottom end of the third screw rod (83) passes through the chassis (5) and is fixedly connected to a fourth driven gear (84), one side of the fourth driven gear (84) is provided with a third driving gear (85), the other side of the fourth driven gear (84) is meshed with a fifth driven gear (86) at the center of the chassis (5), the fifth driven gear (86) is rotatably connected to the bottom of the chassis (5), and a sliding assembly (87) is provided between the bottom of the shaping template (101) and the chassis (5).

7. A winding device according to claim 6, characterized in that: The inclined wedge translation assembly (81) comprises a fixed block (811), one side of the fixed block (811) is fixedly connected to the support sleeve (82), and the other side is slidably connected to the inclined wedge (812) via a slideway, one side of the inclined surface of the inclined wedge (812) is slidably connected to a slider (813) via a slideway, and the slider (813) is fixedly connected to the shaping template (101).

8. A winding device according to claim 7, characterized in that: The sliding assembly (87) comprises an opening (871) formed on the chassis (5) for the bottom of the shaping template (101) to pass through and having a length greater than the thickness of the shaping template (101). Rollers (872) are provided on the top and bottom of the chassis (5) for rolling, and the two rollers (872) are rotatably connected to the shaping template (101).

9. A winding method, which is used for the winding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: starting the rotary drive mechanism (3) to drive the winding die (1) to rotate, winding the wire from the inner diameter side to the outer diameter side of the winding die (1) to form a positive coil, thereby completing the winding of the first layer of coils; S2: After the first layer of coils is wound, the radial displacement mechanism (6) is activated to extend the tower-shaped stacking block (102) to the outside of the shaping template (101), and the wire is wound from the lower part with a longer diameter to the upper part with a shorter diameter, with the same number of turns as the positive cake; S3: activating the radial displacement mechanism (6) again, retracting the tower-shaped stacking block (102) to the inside of the shaping template (101), and causing the wire wound on the tower-shaped stacking block (102) to fall above the positive pancake, thus completing the winding of the second layer of coils; S4: above the second layer of coils, the third layer of coils is wound by rotating the winding mold (1), and the axial lifting mechanism (7) is started to raise the height of the tower-shaped stacking block (102) and the radial displacement mechanism (6), and the method of steps 2 and 3 is repeated to complete the winding of the fourth layer of coils; S5: Repeat steps 1, 2, 3 and 4 until a winding that meets the requirements is completed, and then use the demoulding mechanism (8) to move the shaping template (101) to the center position to separate the winding from the winding mold (1), and use external lifting equipment to take out the winding.

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