A winding mold for transformer production

Abstract

The application relates to a winding mold for transformer production and belongs to the field of transformer production equipment. The winding mold comprises a center shaft, an expansion plate, a pull plate, a connecting cylinder, a connecting flange, a connecting seat, a connecting sleeve, a bearing, a jacking rod, a connecting rod, a V-shaped notch, a connecting shaft, a rectangular groove, an avoiding opening, a positioning pin column, a pin hole and a winding bottom plate. The connecting flange is connected with an external winding machine rotating main shaft, the jacking rod is connected with an external cylinder expansion rod, and the connecting shaft is connected with an external winding top point. The cylinder drives the jacking rod to adjust the positions of the pull plate and the expansion plate, and different coil specifications are adapted; the winding bottom plate supports a coil core and protects the edge corners of the expansion plate. The winding mold solves the problems of inconvenient adjustment and unstable coil support of the existing winding mold, improves production efficiency and product quality, reduces cost, and has good application prospect.

Description

Technical Field

[0001] This utility model relates to the field of transformer production equipment, specifically to a winding mold for transformer production. Background Technology

[0002] In the transformer manufacturing industry, the performance of winding dies directly affects the production quality and efficiency of transformers. Currently, commonly available transformer winding dies have many shortcomings. The dimensional adjustments of some winding dies are not flexible and convenient enough. When facing the winding requirements of transformers with different specifications, traditional winding dies often require a significant amount of time for complex disassembly and component replacement operations, sometimes even necessitating the replacement of the entire winding die. This not only reduces production efficiency but also increases production costs. For example, when producing transformers of different capacities, due to differences in parameters such as the inner and outer diameters of the windings and the number of turns, traditional winding dies struggle to quickly adapt to these changes, resulting in excessively long production preparation times and failing to meet the requirements of high-efficiency production. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by this utility model is the inconvenience of adjusting the size of existing winding dies used in transformer production.

[0005] (II) Technical Solution

[0006] To solve the above problems, this utility model provides the following technical solution:

[0007] A winding die for transformer production includes a central shaft, with a telescopic plate on both the upper and lower sides of the central shaft, and a pull plate on both sides of the central shaft.

[0008] One end of the central shaft is provided with a connecting cylinder, one end of which is rigidly connected to the central shaft, and the other end is fixedly provided with a connecting flange;

[0009] The connecting flange has a tubular connecting seat, one end of which is rigidly connected to one end of the two pull plates. The connecting seat has a connecting sleeve inside, and each end of the connecting sleeve has a bearing. The connecting sleeve is connected to the connecting seat through the two bearings.

[0010] One end of the connecting sleeve is provided with a top rod by a fixed connection;

[0011] Both telescopic plates are provided with multiple connecting rods. One end of each connecting rod on each telescopic plate is connected to the corresponding telescopic plate via a pin, and the other end is connected to the side of the corresponding pull plate via a pin. To facilitate the rotation of the connecting rods, the telescopic plates are provided with multiple V-shaped slots, and the bottom of the V-shaped slots is rounded and chamfered. Each V-shaped slot is provided with a corresponding connecting rod, and the two ends of the connecting rods are arc-shaped structures that match the bottom of the V-shaped slots.

[0012] Furthermore, a connecting shaft is provided at the end of the central shaft away from the connecting cylinder, and the connecting shaft is used to connect with the external winding tip.

[0013] Furthermore, a rectangular groove extending through the front and back is provided on both sides of the central shaft, the pull plate is disposed in the rectangular groove, and the thickness of the pull plate is not greater than the depth of the rectangular groove.

[0014] Furthermore, the connection between the central shaft and the connecting cylinder is provided with a clearance opening to avoid the pull plate.

[0015] Furthermore, the V-shaped slots on the two telescopic plates are arranged in a staggered manner.

[0016] Furthermore, when the connecting rods on the two telescopic plates are connected to the same pull plate, the center point of the pin used at the end of the connecting rod connected to the pull plate is set on the same horizontal line.

[0017] Furthermore, multiple positioning pins are provided on the inner sides of both telescopic plates. The positioning pins are rigidly connected to the telescopic plates, and pin holes that cooperate with the positioning pins are provided on the upper and lower end faces of the central shaft. The positioning pins can move up and down in the pin holes.

[0018] Furthermore, the telescopic plate is provided with multiple sets of winding base plates.

[0019] Furthermore, the connecting flange is connected to the rotating spindle of the external winding machine, and the top rod is connected to the telescopic rod of the cylinder in the external winding equipment.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] This invention, through its telescopic plate and pull plate structure design, combined with the linkage between the push rod and the cylinder, enables quick and convenient adjustment of the winding die size. When winding transformer windings of different specifications are required, there is no need for complex disassembly and replacement of parts; simply pushing the push rod with the cylinder allows the telescopic plate to extend or retract, thereby changing the size of the winding die, greatly shortening production preparation time and improving production efficiency. Attached image description:

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the connection between the push rod and the connecting seat in this utility model;

[0027] Figure 5 This is a structural schematic diagram of the telescopic plate of this utility model;

[0028] Figure 6 This is a schematic diagram showing the design positions of the clearance opening and the pin hole of this utility model.

[0029] The markings in the diagram are: 1-Central shaft, 2-Telescopic plate, 3-Pull plate, 4-Connecting cylinder, 5-Connecting flange, 6-Connecting seat, 7-Connecting sleeve, 8-Bearing, 9-Top rod, 10-Connecting rod, 11-V-groove, 12-Connecting shaft, 13-Rectangular groove, 14-Allowing opening, 15-Positioning pin, 16-Pin hole, 17-Winding base plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Please see Figures 1-6The diagram shows a winding die for transformer production, comprising a central shaft 1, with a telescopic plate 2 mounted on the upper and lower sides of the central shaft 1, and a pull plate 3 on each side. This layout design gives the winding die an adjustable structure, enabling it to adapt to windings of different sizes.

[0033] A connecting cylinder 4 is provided at one end of the central shaft 1. One end of the connecting cylinder 4 is rigidly connected to the central shaft 1 to ensure the stability of the connection, and a connecting flange 5 is fixedly installed at the other end. The connecting flange 5 is used to connect to the rotating spindle of the external winding machine, thereby providing rotational power for the entire winding die. A tubular connecting seat 6 is provided in the connecting flange 5. One end of the connecting seat 6 is rigidly connected to one end of the two pull plates 3, realizing the linkage between the pull plates 3 and the connecting seat 6. A connecting sleeve 7 is provided inside the connecting seat 6. Bearings 8 are installed at both ends of the connecting sleeve 7. Through these two bearings 8, the connecting sleeve 7 and the connecting seat 6 are rotatably connected, ensuring that the connecting sleeve 7 can rotate flexibly. A push rod 9 is fixedly connected to one end of the connecting sleeve 7. The push rod 9 is connected to the telescopic rod of the cylinder in the external winding equipment. When the cylinder is activated, the telescopic rod pushes the push rod 9, thereby driving the connecting sleeve 7 to move within the connecting seat 6, realizing the pulling or pushing of the pull plates 3.

[0034] Multiple connecting rods 10 are installed on both telescopic plates 2. One end of each connecting rod 10 on each telescopic plate 2 is connected to the corresponding telescopic plate 2 via a pin, and the other end is connected to the side of the corresponding pull plate 3 via a pin. To facilitate the flexible rotation of the connecting rods 10 on the telescopic plates 2, multiple V-shaped slots 11 are provided on the telescopic plates 2, and the bottom of the V-shaped slots 11 is rounded and chamfered. Each V-shaped slot 11 is equipped with a corresponding connecting rod 10, and the two ends of the connecting rod 10 are arc-shaped structures that match the bottom of the V-shaped slot 11. This design allows the connecting rod 10 to rotate smoothly within the V-shaped slot 11, achieving a stable transmission connection between the telescopic plates 2 and the pull plate 3.

[0035] Multiple positioning pins 15 are provided on the inner sides of both telescopic plates 2. The positioning pins 15 are rigidly connected to the telescopic plates 2, and pin holes 16 that mate with the positioning pins 15 are provided on the upper and lower end faces of the central shaft 1. The positioning pins 15 can move up and down in the pin holes 16. This design can play a positioning and guiding role during the telescopic plate 2's extension and retraction, ensuring the accuracy and stability of the telescopic plate 2's movement.

[0036] The V-shaped slots 11 on the two telescopic plates 2 are staggered to avoid structural interference and make the movement of the connecting rod 10 smoother. When the connecting rod 10 on the two telescopic plates 2 is connected to the same pull plate 3, the center point of the pin used at the end of the connecting rod 10 connected to the pull plate 3 is set on the same horizontal line to ensure that the pull plate 3 is subjected to uniform force and remains stable during movement.

[0037] A rectangular groove 13 extending through the center shaft 1 is provided on both sides. A pull plate 3 is placed in the rectangular groove 13, and the thickness of the pull plate 3 is not greater than the depth of the rectangular groove 13, so that the pull plate 3 can move smoothly within the rectangular groove 13. A clearance opening 14 is provided at the connection between the center shaft 1 and the connecting cylinder 4 to avoid interference between the pull plate 3 and the connecting cylinder 4 during movement.

[0038] A connecting shaft 12 is provided at the end of the central shaft 1 away from the connecting cylinder 4. The connecting shaft 12 is used to connect with the external winding tip to further ensure the stability of the winding mold during operation and ensure that the central shaft 1 can accurately transmit power and position.

[0039] The telescopic plate 2 is provided with multiple sets of winding base plates 17. The winding base plates 17 are L-shaped. Their main function is to support the transformer coil core during the winding process and prevent the coil core from deforming or shifting during the winding process. At the same time, the L-shaped structure can protect the edges and corners of the telescopic plate 2 and avoid damage to the components caused by direct friction between the coil and the edges and corners of the telescopic plate 2 during the winding process.

[0040] Working principle:

[0041] Connect the connecting shaft 12 on the central shaft 1 to the external winding tip, ensuring a secure connection to guarantee the stability of the central shaft 1 during operation. During connection, key connections or expansion sleeve connections can be used to ensure accurate power transmission and positioning between the connecting shaft 12 and the winding tip. Connect the connecting flange 5 to the rotating spindle of the external winding machine, securing them together with bolts or other fasteners to ensure the connecting flange 5 rotates synchronously with the rotating spindle. Simultaneously, check the installation accuracy of the connection points, such as the coaxiality of the connecting flange 5 and the rotating spindle. Connect the push rod 9 to the telescopic rod of the cylinder in the external winding equipment, ensuring a reliable connection so that the cylinder can accurately control the movement of the pull plate 3 via the push rod 9.

[0042] When the size of the winding die needs to be adjusted to accommodate transformer windings of different specifications, the cylinder in the external winding equipment actuates, and the cylinder's telescopic rod pushes the push rod 9. The push rod 9 drives the connecting sleeve 7 to move within the connecting seat 6. Since the connecting seat 6 is rigidly connected to the pull plate 3, the pull plate 3 slides within the rectangular grooves 13 on both sides of the central shaft 1 as the connecting sleeve 7 moves. When the pull plate 3 moves, it drives the connecting rod 10 to move via the pin. The other end of the connecting rod 10 rotates within the V-groove 11 of the telescopic plate 2, thereby pushing the telescopic plate 2 to extend and retract on the central shaft 1. For example, when the size of the winding die needs to be increased, the cylinder pushes the push rod 9 outward, the pull plate 3 slides outward accordingly, and the connecting rod 10 pushes the telescopic plate 2 to extend outward, increasing the outer diameter of the winding die. During the winding process, the rotating main shaft of the winding machine drives the connecting flange 5, the connecting cylinder 4, the central shaft 1, and the entire winding die to rotate. The winding wire to be wound is placed on the winding base plate 17. As the winding die rotates, the wire gradually winds tightly and evenly onto the winding base plate 17. Because the telescopic plate 2 can be stably adjusted in position under the action of the connecting rod 10 and the pull plate 3, the tightness and uniformity of the winding during the winding process are ensured, avoiding problems such as loosening or displacement of the winding. After winding is completed, the rotation of the winding machine's main shaft and the cylinder are stopped. The winding die with the wound wire is then removed from the winding machine and the winding tip. Disassembly is performed in the reverse order of installation: first, remove the connecting bolts between the connecting flange 5 and the rotating main shaft of the winding machine, and then remove the connecting parts between the connecting shaft 12 and the winding tip.

[0043] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A winding die for transformer manufacturing, characterized in that: It includes a central shaft (1), and a telescopic plate (2) is provided on both the upper and lower sides of the central shaft (1), and a pull plate (3) is provided on both sides of the central shaft (1); One end of the central shaft (1) is provided with a connecting cylinder (4), one end of the connecting cylinder (4) is rigidly connected to the central shaft (1), and the other end is fixedly provided with a connecting flange (5); The connecting flange (5) is provided with a tubular connecting seat (6), one end of the connecting seat (6) is rigidly connected to one end of the two pull plates (3), and a connecting sleeve (7) is provided inside the connecting seat (6). A bearing (8) is provided at both the left and right ends of the connecting sleeve (7), and the connecting sleeve (7) is connected to the connecting seat (6) through the two bearings (8). One end of the connecting sleeve (7) is provided with a top rod (9) by a fixed connection; Both telescopic plates (2) are provided with multiple connecting rods (10). One end of each connecting rod (10) on each telescopic plate (2) is connected to the corresponding telescopic plate (2) by a pin, and the other end is connected to the side of the corresponding pull plate (3) by a pin. In order to facilitate the rotation of the connecting rod (10), the telescopic plate (2) is provided with multiple V-shaped slots (11), and the bottom of the V-shaped slots (11) is rounded and chamfered. Each V-shaped slot (11) is provided with a corresponding connecting rod (10). The two ends of the connecting rod (10) are arc-shaped structures that match the bottom of the V-shaped slot (11).

2. The winding die for transformer production according to claim 1, characterized in that: The central shaft (1) is provided with a connecting shaft (12) at one end away from the connecting cylinder (4), and the connecting shaft (12) is used to connect with the external winding tip.

3. A winding die for transformer production according to claim 2, characterized in that: The central shaft (1) has a rectangular groove (13) that runs through the front and back on both sides. The pull plate (3) is set in the rectangular groove (13), and the thickness of the pull plate (3) is not greater than the depth of the rectangular groove (13).

4. A winding die for transformer production according to claim 3, characterized in that: The connection between the central shaft (1) and the connecting cylinder (4) is provided with a clearance opening (14) to avoid the pull plate (3).

5. A winding die for transformer production according to claim 1, characterized in that: The V-shaped slots (11) on the two telescopic plates (2) are staggered.

6. A winding die for transformer production according to claim 1, characterized in that: When the connecting rods (10) on the two telescopic plates (2) are connected to the same pull plate (3), the center point of the pin used at the end of the connecting rod (10) connected to the pull plate (3) is set on the same horizontal line.

7. A winding die for transformer production according to claim 1, characterized in that: Multiple positioning pins (15) are provided on the inner side of both telescopic plates (2). The positioning pins (15) are rigidly connected to the telescopic plates (2). The upper and lower end faces of the central shaft (1) are provided with pin holes (16) that cooperate with the positioning pins (15). The positioning pins (15) can move up and down in the pin holes (16).

8. A winding die for transformer production according to claim 1, characterized in that: The telescopic plate (2) is provided with multiple sets of winding base plates (17).

9. A winding die for transformer production according to claim 1, characterized in that: The connecting flange (5) is connected to the rotating spindle of the external winding machine, and the top rod (9) is connected to the telescopic rod of the cylinder in the external winding equipment.

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