A winding former suitable for large-sized insulating cylinders

Abstract

The utility model discloses a kind of winding die suitable for large-size insulating cylinder, specifically related to insulating cylinder field, including chuck, concave cavity is provided on chuck, multiple through holes are opened in the inside of concave cavity, through hole is circular, multiple through holes are circular array distribution, through hole is used to reduce the overall weight of chuck, the bottom of chuck is provided with fixed sheet, the bottom of fixed sheet is fixed with connecting column, the bottom of connecting column is opened with butt joint hole, the inside of chuck is provided with clamping mechanism, the inside of chuck is also provided with positioning mechanism, clamping mechanism and positioning mechanism are positioned to insulating cylinder with common cooperation.The utility model connects chuck in the both ends of insulating cylinder, significantly improve the stability and precision of winding process, the connecting column of one side chuck is accurately positioned with winding machine chuck, the other side is automatically centered and is tightly closed through the conical structure on winding machine, ensure that insulating cylinder keeps firm in winding process, effectively prevent the axial movement and radial deviation of insulating cylinder.

Description

Technical Field

[0001] This utility model relates to the field of insulating cylinder technology, and more specifically, to a winding mold suitable for large-size insulating cylinders. Background Technology

[0002] Wire winding is a process in which wires are evenly wound around an insulating cylinder. It is mainly used in the manufacture of electromagnetic components such as transformers and inductors. Through interlayer insulation, it ensures stable electrical performance and can withstand high voltage and mechanical stress. Its compact structure and good heat dissipation make it suitable for high-frequency or high-power applications, and it is commonly found in power equipment, electronic instruments, and other fields.

[0003] Existing winding devices present significant positioning challenges when winding large-sized insulating cylinders. Due to the large size of the insulating cylinders, which exceeds the maximum support range of conventional adjustable winding dies, it becomes particularly difficult to set up a support structure inside the insulating cylinders. The lack of effective internal support can cause the insulating cylinders to easily shift or deform during the winding process, seriously affecting winding accuracy and efficiency. In addition, the large weight of the large-sized insulating cylinders can further exacerbate the problem of positioning instability due to the centrifugal force generated during high-speed winding.

[0004] In summary, to improve the stability of winding large-size insulating cylinders, it is necessary to solve the problem that existing winding machines have difficulty in positioning large-size insulating cylinders, so as to enable precise positioning of large-size insulating cylinders during winding and improve the stability of winding. Utility Model Content

[0005] This utility model provides a winding mold suitable for large-size insulating cylinders, which solves the problem that existing winding devices are not convenient for positioning large-size insulating cylinders when winding them.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a winding mold suitable for large-size insulating cylinders, including a chuck, a cavity provided on the chuck, and multiple through holes provided inside the cavity. The through holes are circular and arranged in a circumferential array. The through holes are used to reduce the overall weight of the chuck. A fixing plate is provided at the bottom of the chuck, and a connecting post is fixed at the bottom of the fixing plate. A docking hole is provided at the bottom of the connecting post. A clamping mechanism is provided inside the chuck, and a positioning mechanism is also provided inside the chuck. The clamping mechanism and the positioning mechanism work together to position the insulating cylinder.

[0007] In a preferred embodiment, the clamping mechanism includes an alignment component and an adjustment component, the alignment component being used to center and clamp the insulating cylinder, and the adjustment component being used to adjust the alignment component.

[0008] In a preferred embodiment, the centering assembly includes a mounting frame fixed inside the cavity of the chuck, a bidirectional lead screw rotatably connected inside the mounting frame, two movable seats threaded through the outer side of the bidirectional lead screw, and a clamping plate fixed to the top of the movable seats.

[0009] In a preferred embodiment, the adjustment assembly includes a connecting shaft mounted on the right end of the bidirectional lead screw. The right end of the connecting shaft passes through the side wall of the mounting frame and the chuck and is connected to a rotating block. The rotating block has a slot.

[0010] In a preferred embodiment, the positioning mechanism includes an auxiliary component and a fixing component, wherein the auxiliary component is used to assist in positioning the insulating cylinder, and the fixing component is used to fix the auxiliary component.

[0011] In a preferred embodiment, the auxiliary component includes two fixed seats installed inside the cavity of the chuck, each fixed seat having a sleeve fixed thereon, and a sliding column slidably connected inside the sleeve.

[0012] In a preferred embodiment, the fixing component includes a positioning groove formed on the side of the slide column, and a screw hole is formed on the sleeve, with a fastening screw connected inside the screw hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention significantly improves the stability and precision of the winding process by attaching chucks to both ends of the insulating cylinder. One side of the chuck's connecting post is precisely positioned with the winding machine's clamping plate, while the other side uses a conical structure on the winding machine to automatically center and tighten, ensuring the insulating cylinder remains stable during winding. This dual positioning design effectively prevents axial movement and radial displacement of the insulating cylinder, allowing the wire to be wound evenly and tightly on the surface of the insulating cylinder. The entire structure is easy to operate and reliably tightens, making it particularly suitable for mass production. It not only improves the winding quality but also reduces the risk of wire displacement caused by insulating cylinder displacement. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the clamping mechanism of this utility model.

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the sleeve of this utility model.

[0018] Figure 4 This is an exploded three-dimensional structural diagram of the positioning mechanism of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the present invention viewed from below.

[0020] The attached diagram is labeled as follows: 1. Chuck; 2. Through hole; 3. Fixing plate; 4. Connecting post; 5. Docking hole; 61. Mounting frame; 62. Two-way lead screw; 63. Moving seat; 64. Clamping plate; 65. Connecting shaft; 66. Rotating block; 67. Slot; 71. Fixing seat; 72. Sleeve; 73. Sliding column; 74. Positioning groove; 75. Screw hole; 76. Fastening screw. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Insulating cylinder winding is a precision manufacturing process that accurately, firmly, and reliably attaches conductive windings to the surface of an insulating cylinder, often referred to as the "heart surgery" of power equipment manufacturing. This process primarily ensures the precise arrangement of the conductors (electrode wire) on the cylinder, with uniform, tight, and clearly layered turns, eliminating crossings, overlaps, or uneven gaps to optimize electromagnetic performance, control losses, and enhance heat dissipation. Secondly, precise control of the winding tension is crucial; excessive tension will damage the conductor insulation and even crush the cylinder, while insufficient tension will cause the winding to loosen, making it unable to withstand the enormous short-circuit electromagnetic forces during operation. Friction protection between the conductor insulation layer and the cylinder surface, and between the turns, is also critical during high-speed winding. Special coatings, lubricants, or low-friction coefficient insulating cylinder materials (such as PTFE coatings) are commonly used to prevent scratches. Post-winding curing treatment (such as vacuum pressure impregnation with VPI) is indispensable. Resin impregnation fills microscopic gaps and cures, forming an integrated insulating structure that greatly improves overall electrical strength, mechanical rigidity, thermal conductivity, and moisture resistance, truly fusing the winding and insulating cylinder into an indestructible functional whole.

[0023] The core challenge of large-size insulating cylinders in the winding process stems from their massive physical size and hollow structure, which inherently make them structurally fragile. When the diameter of the insulating cylinder exceeds conventional sizes (e.g., exceeding 1.5 meters or even larger), the rigidity of the cylinder itself decreases significantly, while its enormous weight becomes a significant load. On the winding machine, the cylinder must be suspended and clamped between the head and tail frames. Due to the large inner diameter of the insulating cylinder, conventional adjustable molds cannot be used as support frameworks. The entire insulating cylinder lacks effective internal support points in both the radial and axial directions, resembling a "suspended and fragile thin shell." The enormous conductor tension applied to the cylinder wall during the winding process (especially in the starting layer and the first and last turns, which can reach several tons or even higher) easily induces instability and deformation of the cylinder: radial pressure causes the cylinder cross-section to flatten from a perfect circle into an ellipse, while axial tension can cause the cylinder to bend overall or dent locally. This deformation is not only a deviation in geometric dimensions but also a challenge to the limits of the cylinder material, posing a risk of crushing or tearing the insulating cylinder wall, and once the deformation occurs, it is irreversible.

[0024] Refer to the instruction manual appendix Figures 1 to 5 A winding die suitable for large-size insulating cylinders includes a chuck 1. The chuck 1 has a cavity with multiple through holes 2 inside. The through holes 2 are circular and arranged in a circumferential array. The through holes 2 are used to reduce the overall weight of the chuck 1. A fixing plate 3 is provided at the bottom of the chuck 1, and a connecting post 4 is fixed at the bottom of the fixing plate 3. A mating hole 5 is provided at the bottom of the connecting post 4. A clamping mechanism and a positioning mechanism are provided inside the chuck 1. The clamping mechanism and the positioning mechanism work together to position the insulating cylinder.

[0025] It should be noted that the through hole 2 can be of any shape, provided that the overall strength of the chuck 1 is guaranteed. The circular through hole 2 has a high degree of uniformity, which can balance the weight of the chuck 1 and improve the stability during rotation. At the same time, a conical structure is set at one end of the corresponding clamp of the winding machine for docking with the docking hole 5 of the connecting post 4. The two ends of the insulating cylinder are equipped with chuck 1, and the connecting post 4 on the other side is connected and positioned with the clamp of the winding machine, thereby realizing the overall positioning and clamping of the insulating cylinder, which is convenient for subsequent winding.

[0026] Refer to the instruction manual appendix Figure 1 The clamping mechanism includes an alignment component and an adjustment component. The alignment component is used to clamp and center the insulating cylinder, and the adjustment component is used to adjust the alignment component.

[0027] It should be noted that the centering component is used to ensure that the insulating cylinder can be positioned in the center of the chuck 1 to avoid the problem of eccentricity during rotation, while the adjustment component is used to adjust the centering component so that it can clamp the insulating cylinder.

[0028] Refer to the instruction manual appendix Figure 1 and Figure 2 The centering assembly includes a mounting frame 61 fixed inside the cavity of the chuck 1. A bidirectional lead screw 62 is rotatably connected inside the mounting frame 61. Two movable seats 63 are threadedly connected to the outside of the bidirectional lead screw 62. A clamping plate 64 is fixed to the top of the movable seats 63.

[0029] It should be noted that the bidirectional lead screw 62 is used to drive the two moving seats 63 to move relative to each other, thereby driving the clamping plate 64 to move and achieve the purpose of clamping and positioning the insulating cylinder.

[0030] Refer to the instruction manual appendix Figure 1 and Figure 2 The adjustment assembly includes a connecting shaft 65 installed at the right end of the bidirectional lead screw 62. The right end of the connecting shaft 65 passes through the side wall of the mounting frame 61 and the chuck 1 and is connected to a rotating block 66. The rotating block 66 has a slot 67.

[0031] It should be noted that the slot 67 is polygonal. The operator can insert the corresponding handle into the slot 67 to rotate the rotating block 66, thereby driving the bidirectional lead screw 62 to rotate through the connecting shaft 65.

[0032] Refer to the instruction manual appendix Figure 1 The positioning mechanism includes an auxiliary component and a fixing component. The auxiliary component is used to assist in positioning the insulating cylinder, and the fixing component is used to fix the auxiliary component.

[0033] It should be noted that the auxiliary components can assist in positioning the insulating cylinder to ensure installation accuracy.

[0034] Refer to the instruction manual appendix Figure 1 , Figure 4 and Figure 5 The auxiliary components include two fixed seats 71 installed inside the cavity of the chuck 1, and a sleeve 72 is fixed on each of the two fixed seats 71. A sliding column 73 is slidably connected inside the sleeve 72.

[0035] It should be noted that the sliding column 73 can slide along the inner wall of the sleeve 72, and the end of the sliding column 73 is arc-shaped, which can fit against the outer wall of the insulating cylinder.

[0036] Refer to the instruction manual appendix Figure 1 , Figure 4 and Figure 5 The fixing component includes a positioning groove 74 opened on the side of the slide column 73, and a screw hole 75 opened on the sleeve 72, with a fastening screw 76 connected inside the screw hole 75.

[0037] It should be noted that the surface of the slide column 73 is provided with scale lines, which makes it easy for the staff to judge whether the sliding distance of the slide columns 73 on both sides is consistent. After adjustment, the fastening screw 76 is screwed in, and the pressure of the fastening screw 76 on the positioning groove 74 is used to position the slide column 73.

[0038] Working principle: Both ends of the insulating cylinder are equipped with chucks 1. The docking hole 5 of the connecting post 4 at the bottom of one side of the chuck 1 docks with the conical structure of the winding machine, while the connecting post 4 on the other side is directly connected to the clamp of the winding machine, thus fixing the insulating cylinder as a whole on the winding machine. Inside the cavity of the chuck 1, the operator rotates the connecting shaft 65 by rotating the rotating block 66, which in turn drives the bidirectional lead screw 62 to rotate. The bidirectional lead screw 62 drives the two moving seats 63 to move relative to each other. The clamping plate 64 on the top of the moving seat 63 moves accordingly to clamp the insulating cylinder, ensuring that the insulating cylinder is centered and positioned. At the same time, the sliding post 73 slides in the sleeve 72 on the fixed seat 71 installed inside the cavity to fit against the outer wall of the insulating cylinder. The surface of the sliding post 73 is provided with scale lines to facilitate the adjustment of the sliding distance on both sides to be consistent. Then, the fastening screw 76 is screwed in to fix the position of the sliding post 73 through the positioning groove 74, which helps to accurately position the insulating cylinder. The multiple circular through holes 2 on the chuck 1 are distributed in a circumferential array, which reduces the overall weight and improves the rotational stability, making the winding operation easier.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A winding die suitable for large-size insulating cylinders, characterized in that: Includes a chuck (1), which has a cavity and multiple through holes (2) inside the cavity. The through holes (2) are circular and arranged in a circumferential array. The through holes (2) are used to reduce the overall weight of the chuck (1). A fixing plate (3) is provided at the bottom of the chuck (1). A connecting post (4) is fixed at the bottom of the fixing plate (3). A docking hole (5) is provided at the bottom of the connecting post (4). A clamping mechanism is provided inside the chuck (1). A positioning mechanism is also provided inside the chuck (1). The clamping mechanism and the positioning mechanism work together to position the insulating cylinder.

2. A winding die suitable for large-size insulating cylinders according to claim 1, characterized in that: The clamping mechanism includes an alignment component and an adjustment component. The alignment component is used to clamp and center the insulating cylinder, and the adjustment component is used to adjust the alignment component.

3. A winding die suitable for large-size insulating cylinders according to claim 2, characterized in that: The centering assembly includes a mounting frame (61) fixed inside the cavity of the chuck (1), a double-acting screw (62) is rotatably connected inside the mounting frame (61), and two moving seats (63) are threadedly connected to the outside of the double-acting screw (62), with a clamping plate (64) fixed on the top of the moving seats (63).

4. A winding die suitable for large-size insulating cylinders according to claim 3, characterized in that: The adjustment assembly includes a connecting shaft (65) installed on the right end of the bidirectional lead screw (62). The right end of the connecting shaft (65) passes through the side wall of the mounting frame (61) and the chuck (1) and is connected to a rotating block (66). The rotating block (66) has a slot (67).

5. A winding die suitable for large-size insulating cylinders according to claim 1, characterized in that: The positioning mechanism includes an auxiliary component and a fixing component. The auxiliary component is used to assist in positioning the insulating cylinder, and the fixing component is used to fix the auxiliary component.

6. A winding die suitable for large-size insulating cylinders according to claim 5, characterized in that: The auxiliary components include two fixed seats (71) installed inside the cavity of the chuck (1), and a sleeve (72) is fixed on each of the two fixed seats (71). A sliding column (73) is slidably connected inside the sleeve (72).

7. A winding die suitable for large-size insulating cylinders according to claim 6, characterized in that: The fixing component includes a positioning groove (74) on the side of the slide column (73), a screw hole (75) on the sleeve (72), and a fastening screw (76) connected inside the screw hole (75).

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