A foil winding device for transformer production

Abstract

The application relates to the field of transformer manufacturing, and discloses a foil winding device for transformer production, which comprises a workbench, a supporting roller, a coil and insulating paper are arranged on the front face of the workbench, a foil winding mold supporting mechanism is arranged on the outer side of the supporting roller, the foil winding mold supporting mechanism comprises a fixed cylinder fixedly arranged on the bottom of the front face of the workbench, a piston and a spring one are arranged in the fixed cylinder, and a supporting frame is elastically arranged on the top end of the piston. The device is re-designed, hydraulic pressure is utilized to provide constant supporting pressure for synchronous displacement of the supporting roller and the foil winding mold, the coil and the insulating paper can be effectively ensured to be smoothly wound, for the purpose, a spring two is utilized to provide buffer staggered displacement between the piston and the sealing block, the sealing block is freely adapted to the bottom height movement of the foil winding mold when the sealing block no longer blocks the through groove, and constant pressure provided by the buffer pad and the pressure roller to the foil winding mold, the coil and the insulating paper during winding is realized.

Description

Technical Field

[0001] This application relates to the field of transformer manufacturing technology, and in particular to a foil winding device for transformer production. Background Technology

[0002] A foil transformer is a dry-type transformer that uses aluminum or copper foil instead of traditional flat copper wire to make low-voltage windings. It is a new type of transformer equipment. Its windings are made of conductor foil, with polyester film used as insulation between layers. The conductor material undergoes annealing and softening treatment, combined with a coating and baking process to form a composite insulation structure. Lead wire welding and surface wrapping are completed simultaneously during the winding process. The coil windings of a foil transformer consist of wide and flat conductor foil, therefore specialized foil winding equipment is required for coil winding. In existing technologies, directly using foil for coil winding has some potential drawbacks: when the winding rollers... When the moving foil winding die is rotated, a pressure roller needs to be set up to press on the surface of the foil winding die and the foil coil to provide pressure for the coil winding and ensure that the coil winding is smooth and regular. However, the pressure roller in the prior art cannot provide constant pressure. As the number of foil turns of the coil increases, its overall outer diameter increases, which causes the contact distance between the coil surface and the pressure roller to vary. In particular, for flat foil coil windings, the contact distance between the coil surface and the pressure roller fluctuates even more. As a result, the pressure roller in the prior art cannot maintain the pressure on the coil surface in a constant range, which easily damages the coil and leaves marks. Therefore, it is urgent to solve this problem. Summary of the Invention

[0003] This application proposes a foil winding device for transformer production, which has the advantages of good winding effect and constant pressure, and solves the problem that the constant pressure cannot be guaranteed in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solution: a foil winding device for transformer production, comprising: A workbench, wherein a support roller, a coil and insulating paper are mounted on the front side of the workbench, and a foil winding mold is mounted on the outer side of the support roller; A support mechanism includes a fixed cylinder fixedly installed on the bottom front of the workbench. The fixed cylinder has a piston and a spring sealed inside. A support frame is elastically installed on the top of the piston. A pressure roller is rotatably installed inside the support frame. The inner cavity of the fixed cylinder is filled with transmission fluid. The bottom end of the piston has a through groove and a sealing groove. A connecting frame is movably sleeved on the bottom of the support frame. A bracket is installed on the top of the connecting frame. An abutment ring is rotatably installed inside the bracket. A connecting column is fixedly connected to the bottom of the connecting frame. The bottom end of the connecting column penetrates into the inner cavity of the fixed cylinder and is fixedly connected to a sealing block located inside the sealing groove. A spring is elastically connected between the connecting frame and the support frame. This device has been redesigned to utilize hydraulic pressure to provide constant support pressure for the support rollers and foil winding mold, effectively ensuring the smooth winding of the coil and insulating paper. To achieve this, the device features a support mechanism located at the bottom of the worktable's front side to dynamically and synchronously support the foil winding mold. When the foil winding mold is stationary, spring three pulls the connecting frame upwards, causing the connecting column and sealing block to move upwards, allowing the sealing block to seal against the sealing groove, thus blocking the through groove and preventing the free flow of the transmission fluid in the fixed cylinder's inner cavity. This allows the transmission fluid to rigidly support the piston and provide support pressure for the foil winding mold, coil, and insulating paper during winding. When the support rollers rotate the foil winding mold, the bottom of the foil winding mold will inevitably undulate with the buffer pad. At this time, spring two is installed to ensure the foil winding... The downward pressure displacement generated by the die on the pressure roller during rotation is absorbed by spring two. It then abuts against the bottom of the foil winding die through the abutment ring and moves downward synchronously, causing the sealing block to disengage from the sealing groove. This opens up the through groove and the sealing groove, allowing the transmission fluid to flow freely on both sides of the through groove and the sealing groove. At this time, the piston is no longer rigidly supported by the transmission fluid. Instead, its height changes synchronously with the rotation of the foil winding die, and it is elastically supported by spring one. This design allows the piston to provide rigid support for the foil winding die through the incompressible characteristics of the transmission fluid, while spring two provides buffered staggered displacement between the piston and the sealing block. It also allows the sealing block to freely adapt to the bottom height movement of the foil winding die when it no longer blocks the through groove. This achieves a constant pressure provided to the buffer pad and pressure roller for the foil winding die, coil, and insulating paper during winding.

[0005] Preferably, the outer surface of the pressure roller is fixedly connected with multiple sets of buffer pads, and the outer surface of the pressure roller is provided with multiple sets of slots between the buffer pads. The bracket is movably sleeved in the slots and has a clearance fit with the outer surface of the pressure roller. The outer surfaces of the buffer pads and the abutment ring abut against the foil winding mold.

[0006] Preferably, the spring is stretched and disposed between the bottom of the support frame and the top of the connecting frame, and the top of the sealing block is in sealing contact with the top of the inner wall of the sealing groove.

[0007] Preferably, a guide cylinder is fixedly connected to the bottom of the support frame, the guide cylinder is adapted to be connected to the top of the piston, and a second spring is movably sleeved inside the guide cylinder, with the two ends of the second spring being elastically connected to the support frame and the piston, respectively.

[0008] Preferably, the piston is elastically supported inside the fixed cylinder by a spring, which is compressed and disposed at the bottom of the inner cavity of the fixed cylinder.

[0009] Preferably, the cushioning pad is made of hard rubber, and a gap is left between the cushioning pad and the abutment ring.

[0010] Preferably, the thickness of the sealing block is less than the inner cavity depth of the sealing groove, and the transmission fluid is made of kerosene.

[0011] Preferably, a gap is left between the bottom of the bracket and the top of the support frame, so that when the abutment ring and the bracket move downward, the inner wall of the abutment ring never contacts the pressure roller.

[0012] The beneficial effects of this invention are as follows: 1. This device has been redesigned to utilize hydraulic pressure to provide constant support pressure for the support roller and foil winding die, effectively ensuring the smooth winding of the coil and insulating paper. To achieve this, the device is equipped with a support mechanism located at the bottom of the front of the worktable to provide dynamic synchronous support for the foil winding die. When the foil winding die is stationary, spring three pulls the connecting frame upward, causing the connecting column and sealing block to move upward, so that the sealing block seals against the sealing groove, thereby blocking the through groove and preventing the free flow of the transmission fluid in the inner cavity of the fixed cylinder. This allows the transmission fluid to provide rigid support for the piston and provide support pressure for the foil winding die, coil, and insulating paper during winding. When the support roller drives the foil winding die to rotate, the bottom of the foil winding die will inevitably fluctuate with the buffer pad. At this time, spring two is installed to make the foil... The downward pressure displacement generated by the winding die on the pressure roller during rotation is absorbed by spring two. It then abuts against the bottom of the winding die through the abutment ring and moves downward synchronously, causing the sealing block to disengage from the sealing groove. This opens up the through groove and the sealing groove, allowing the transmission fluid to flow freely on both sides of the through groove and the sealing groove. At this time, the piston is no longer rigidly supported by the transmission fluid. Instead, its height changes synchronously with the rotation of the winding die, and it is elastically supported by spring one. This design allows the piston to provide rigid support for the winding die through the incompressible characteristics of the transmission fluid, while spring two provides a buffered staggered displacement between the piston and the sealing block. It also allows the sealing block to freely adapt to the bottom height movement of the winding die when it no longer blocks the through groove. This achieves a constant pressure provided to the buffer pad and pressure roller on the winding die, coil, and insulating paper during winding.

[0013] 2. Furthermore, this device also utilizes pressure rollers and buffer pads to provide dynamic support for the foil winding die in conjunction with the piston, fixed cylinder, and transmission fluid. The design of the sealing block, which always faces upwards, blocks the through groove and sealing groove, allowing the transmission fluid to directly provide rigid support for the piston. The supporting force is then transmitted to the foil winding die, coil, and insulating paper through the pressure rollers and transmission fluid. This design eliminates the need for a detachable support component specifically for supporting the support roller, saving space in the device without compromising the constant support of the support roller. Overall, the cost is lower and the reliability is higher.

[0014] 3. Finally, when the foil winding mold rotates to a position where its bottom is higher than the buffer pad, a pair of pistons are pressed by a spring located inside the fixed cylinder, causing the pistons to move upward synchronously. This causes the pressure roller and the buffer pad to simultaneously adapt and abut against the outside of the foil winding mold. At this time, the sealing block remains detached from the inner wall of the sealing groove as the piston moves downward. Therefore, the sealing block can remain detached from the inner wall of the sealing groove during the upward movement of the piston until the foil winding mold stops. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0016] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a front view diagram of the overall structure of the present invention; Figure 2 This is a front sectional view of the support mechanism of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is a side sectional view of the support mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C; Figure 7 This is a side perspective view of the support mechanism of the present invention; Figure 8 This is a schematic diagram showing the separation of the support mechanism of the present invention; Figure 9 This is a schematic diagram showing the separation of the fixed cylinder, piston, spring, connecting column, and sealing block of the present invention.

[0017] The components are as follows: 1. Workbench; 2. Support roller; 3. Foil winding mold; 4. Coil; 5. Insulating paper; 6. Support mechanism; 61. Fixed cylinder; 62. Piston; 63. Support frame; 64. Pressure roller; 65. Slot; 66. Transmission fluid; 67. Spring 1; 68. Through groove; 69. Sealing groove; 610. Spring 2; 611. Connecting frame; 612. Connecting column; 613. Sealing block; 614. Bracket; 615. Abutment ring; 616. Buffer pad; 617. Guide cylinder; 618. Spring 3. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] Please see Figures 1-9 This embodiment discloses a foil winding device for transformer production, comprising: Workbench 1, with support roller 2, coil 4 and insulating paper 5 installed on the front of workbench 1, and foil winding mold 3 installed on the outside of support roller 2; The support mechanism 6 includes a fixed cylinder 61 fixedly installed on the bottom front of the workbench 1. The fixed cylinder 61 is internally sealed with a piston 62 and a spring 67. A support frame 63 is elastically installed on the top of the piston 62. A pressure roller 64 is rotatably installed inside the support frame 63. The inner cavity of the fixed cylinder 61 is filled with transmission fluid 66. A through groove 68 and a sealing groove 69 are opened at the bottom of the piston 62. A connecting frame 611 is movably sleeved on the bottom of the support frame 63. A bracket 614 is installed on the top of the connecting frame 611. An abutment ring 615 is rotatably installed inside the bracket 614. A connecting column 612 is fixedly connected to the bottom of the connecting frame 611. The bottom end of the connecting column 612 penetrates into the inner cavity of the fixed cylinder 61 and is fixedly connected to a sealing block 613 located inside the sealing groove 69. A spring 618 is elastically connected between the connecting frame 611 and the support frame 63. This device has been redesigned to utilize hydraulic pressure to provide constant support pressure for the support roller 2 and foil winding mold 3, ensuring the smooth winding of coil 4 and insulating paper 5. To achieve this, the device is equipped with a support mechanism 6 located at the bottom of the front of the workbench 1 to provide dynamic synchronous support for the foil winding mold 3. When the foil winding mold 3 is stationary, spring 618 pulls the connecting frame 611 upward, causing the connecting column 612 and sealing block 613 to move upward, so that the sealing block 613 seals against the sealing groove 69, thereby blocking the through groove 68 and preventing the free flow of the transmission fluid 66 in the inner cavity of the fixed cylinder 61. This allows the transmission fluid 66 to provide rigid support for the piston 62 and provide support pressure for the foil winding mold 3, coil 4, and insulating paper 5 during winding. When the support roller 2 drives the foil winding mold 3 to rotate, the bottom of the foil winding mold 3 will inevitably fluctuate with the buffer pad 616. At this time, spring 610 is provided to prevent the foil winding mold 3 from rotating. The downward pressure displacement generated by the pressure roller 64 is compressed and absorbed by the second spring 610, and abuts against the bottom of the foil winding mold 3 through the abutment ring 615 and moves downward synchronously, causing the sealing block 613 to disengage from the sealing groove 69, opening the through groove 68 and the sealing groove 69, so that the transmission fluid 66 can flow freely on both sides of the through groove 68 and the sealing groove 69. At this time, the piston 62 is no longer rigidly supported by the transmission fluid 66, but changes its height synchronously with the rotation of the foil winding mold 3, and is elastically supported by the first spring 67. This design allows the piston 62 to provide rigid support for the foil winding mold 3 through the incompressible characteristics of the transmission fluid 66, and to provide buffered staggered displacement between the piston 62 and the sealing block 613 using the second spring 610. When the sealing block 613 no longer blocks the through groove 68, it can freely adapt to the bottom height movement of the foil winding mold 3, realizing a constant pressure provided to the buffer pad 616 and the pressure roller 64 for the foil winding mold 3, coil 4 and insulating paper 5 during winding.

[0020] Then, the device also uses the pressure roller 64 and the buffer pad 616 to provide dynamic support for the foil winding die 3 in cooperation with the piston 62, the fixed cylinder 61, and the transmission fluid 66. The sealing block 613 is designed to always face upward to block the through groove 68 and the sealing groove 69, so that the transmission fluid 66 directly provides rigid support for the piston 62 and transmits the support force to the foil winding die 3, the coil 4 and the insulating paper 5 through the pressure roller 64 and the transmission fluid 66. This design eliminates the need for a detachable support component specifically for supporting the support roller 2, saves space in the device, and does not interfere with the constant support of the support roller 2. The overall cost is lower and the reliability is higher.

[0021] Finally, when the foil winding mold 3 rotates to a position where its bottom is higher than the buffer pad 616, the spring 67 located inside the fixed cylinder 61 applies pressure to the piston 62, causing the piston 62 to move upward synchronously, and driving the pressure roller 64 and the buffer pad 616 to simultaneously adapt and abut against the outside of the foil winding mold 3. At this time, the sealing block 613 remains detached from the inner wall of the sealing groove 69 as the piston 62 moves downward. Therefore, during the upward movement of the piston 62, the sealing block 613 can remain detached from the inner wall of the sealing groove 69 until the foil winding mold 3 stops.

[0022] In this embodiment, multiple sets of buffer pads 616 are fixedly connected to the outer surface of the pressure roller 64, and multiple sets of slots 65 are opened on the outer surface of the pressure roller 64 between the buffer pads 616. The bracket 614 is movably sleeved in the slots 65 and has a clearance fit with the outer surface of the pressure roller 64. The outer surfaces of the buffer pads 616 and the abutting rings 615 abut against the foil winding mold 3. like Figure 2 , Figure 5 As shown, the buffer pad 616 and the abutment ring 615 are in direct contact with the outer surfaces of the foil winding mold 3 and the coil 4. When the foil winding mold 3 rotates and its contact position with the buffer pad 616 and the abutment ring 615 changes, the change can be transmitted to the sealing block 613 in a timely manner through the abutment ring 615. This forces the sealing block 613 to move downward and disengage from the sealing groove 69. At this time, the transmission fluid 66 can freely pass through the through groove 68 and the sealing groove 69 without hindering the movement of the piston 62. This causes the spring 67 to press upward on the piston 62 and drive the pressure roller 64, the buffer pad 616 and the abutment ring 615 to abut and adapt with the foil winding mold 3 and the coil 4.

[0023] In this embodiment, spring 618 is stretched and disposed between the bottom of support frame 63 and the top of connecting frame 611, and the top of sealing block 613 is sealed and abuts against the top of the inner wall of sealing groove 69. like Figure 2 , Figure 5 As shown, spring 618 is used to pull the connecting frame 611 upward and force the connecting column 612 to make a sealing contact with the bottom of the inner wall of the sealing groove 69, thereby opening the through groove 68 and the sealing groove 69. At this time, the piston 62 can move freely on the inner wall of the fixed cylinder 61.

[0024] In this embodiment, a guide cylinder 617 is fixedly connected to the bottom of the support frame 63. The guide cylinder 617 is adapted to be connected to the top of the piston 62. A second spring 610 is movably sleeved inside the guide cylinder 617. The two ends of the second spring 610 are elastically connected to the support frame 63 and the piston 62, respectively. like Figure 2 , Figure 5As shown, since the transmission fluid 66, piston 62, support frame 63 and pressure roller 64 need to maintain rigid support for the foil winding mold 3, when the foil winding mold 3 rotates, the distance between the contact surface of the foil winding mold 3 and the buffer pad 616 and the abutment ring 615 and the rotation axis of the foil winding mold 3 will increase. Therefore, it is necessary to make the buffer pad 616 drive the pressure roller 64 and the support frame 63 to make a small displacement relative to the piston 62, so that the abutment ring 615 can drive the sealing block 613 to disengage from the sealing groove 69 under the rotation of the foil winding mold 3, so that the piston 62 can subsequently generate an adaptive displacement.

[0025] In this embodiment, the piston 62 is elastically supported inside the fixed cylinder 61 by a spring 67, and the spring 67 is compressed and disposed at the bottom of the inner cavity of the fixed cylinder 61. Spring 67 is responsible for providing the upward force for piston 62. When piston 62 needs to move upward with the rotation of foil winding mold 3, spring 67 can provide power.

[0026] In this embodiment, the buffer pad 616 is made of hard rubber, and a gap is left between the buffer pad 616 and the abutment ring 615. The buffer pad 616 can reduce the indentation on the coil 4. During the downward movement of the abutment ring 615 and the bracket 614, the maximum displacement will not cause the outer surface of the abutment ring 615 and the pressure roller 64 to come into contact, and the two will not interfere with each other.

[0027] In this embodiment, the thickness of the sealing block 613 is less than the inner cavity depth of the sealing groove 69, and the transmission fluid 66 is made of kerosene. The purpose of each movement of the sealing block 613 is to open up the through groove 68 and the sealing groove 69, so that the transmission fluid 66 can flow freely in the through groove 68 and the sealing groove 69. At this time, the piston 62 can automatically adapt to the movement displacement under the rotational contact of the foil winding mold 3 and the elastic support of the spring 67.

[0028] In this embodiment, there is a gap between the bottom of the bracket 614 and the top of the support frame 63. When the abutment ring 615 and the bracket 614 move downward, the inner wall of the abutment ring 615 never contacts the pressure roller 64. The bracket 614 and the abutment ring 615 can be displaced downward relative to the support frame 63 under the rotational abutment of the foil winding mold 3.

[0029] Working principle: When this device is in operation: First, the foil winding mold 3 is installed on the outer surface of the support roller 2, and the coil 4 and the insulating paper 5 are led out respectively, so that they are stacked on the outer surface of the foil winding mold 3, and the abutment ring 615 and the buffer pad 616 abut against the foil winding mold 3, pressing the coil 4 and the insulating paper 5. The pressure comes from the weight of the support roller 2 and the foil winding mold 3. Then, as Figure 1 and Figure 2 As shown, the support roller 2 drives the foil winding mold 3 to rotate and wind the coil 4 and insulating paper 5, so that the coil 4 and insulating paper 5 can be wound in an orderly manner on the outer surface of the foil winding mold 3. The abutment ring 615 and the buffer pad 616 abut against the outermost coil 4. The pressure roller 64 is pressed down and presses the second spring 610 to generate a rebound force to support it. The third spring 618 pulls the connecting frame 611, the connecting column 612 and the sealing block 613 upward, so that the through groove 68 and the sealing groove 69 are blocked. The piston 62 is rigidly supported in the inner cavity of the fixed cylinder 61 by the transmission fluid 66. When the foil winding mold 3 rotates or the number of turns of the wound coil 4 and insulating paper 5 increases, the abutment ring 615 and the buffer pad 616 bear the pressure first. The buffer pad 616 will first drive the support frame 63 and guide cylinder 617 to move downward and compress the second spring 610 to provide buffer space. At the same time, the abutment ring 615 will drive the bracket 614, connecting frame 611, connecting column 612 and sealing block 613 downward, so that the sealing block 613 will disengage from the sealing contact with the top of the inner wall of the sealing groove 69. When the through groove 68 is opened and the transmission fluid 66 can freely pass through the through groove 68 and the sealing groove 69, the piston 62 will no longer be subjected to rigid support force from the transmission fluid 66. At this time, the pressure roller 64 and support frame 63 will drive the piston 62 to move downward and compress the first spring 67. At the same time, the buffer pad 616 and abutment ring 615 will maintain the adaptive contact with the outer surface of the foil winding mold 3, coil 4 and insulating paper 5. Finally, when the foil winding mold 3 moves upward to the contact position with the buffer pad 616 and the abutment ring 615, the pressure roller 64 and piston 62 lose downward pressure and are reset upward under the elastic force of spring 67. At this time, the sealing block 613 remains detached from the inner wall of the sealing groove 69. When the foil winding mold 3 stops rotating, the abutment ring 615 and the bracket 614 are reset under the action of spring 618 and re-seal the sealing groove 69. At this time, the transmission fluid 66 cannot freely pass through the through groove 68 and the sealing groove 69, thus the transmission fluid 66 located at the bottom of the piston 62 provides rigid support.

[0030] 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 it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A foil winding device for transformer manufacturing, characterized in that, include: A workbench (1) is provided with a support roller (2), a coil (4) and insulating paper (5) on the front side of the workbench (1), and a foil winding mold (3) is provided on the outside of the support roller (2). The support mechanism (6) includes a fixed cylinder (61) fixedly installed on the bottom front of the workbench (1). The fixed cylinder (61) is internally sealed with a piston (62) and a spring (67). A support frame (63) is elastically installed on the top of the piston (62). A pressure roller (64) is rotatably installed inside the support frame (63). The inner cavity of the fixed cylinder (61) is filled with transmission fluid (66). A through groove (68) and a sealing groove (69) are opened at the bottom of the piston (62). A connecting frame (611) is movably sleeved on the bottom of the support frame (63). A bracket (614) is installed on the top of the connecting frame (611). An abutment ring (615) is rotatably installed inside the bracket (614). A connecting column (612) is fixedly connected to the bottom of the connecting frame (611). The bottom end of the connecting column (612) extends through the inner cavity of the fixed cylinder (61) and is fixedly connected to a sealing block (613) located inside the sealing groove (69). A spring three (618) is elastically connected between the connecting frame (611) and the support frame (63). The spring three (618) is stretched and positioned between the bottom of the support frame (63) and the top of the connecting frame (611). The top end of the sealing block (613) is aligned with the top of the inner wall of the sealing groove (69). The bottom of the support frame (63) is fixedly connected to a guide cylinder (617), which is adapted to be connected to the top of the piston (62). A second spring (610) is movably sleeved inside the guide cylinder (617). The two ends of the second spring (610) are elastically connected to the support frame (63) and the piston (62) respectively. The piston (62) is elastically supported inside the fixed cylinder (61) by a first spring (67), which is compressed and set at the bottom of the inner cavity of the fixed cylinder (61).

2. The foil winding equipment for transformer production according to claim 1, characterized in that, Multiple sets of buffer pads (616) are fixedly connected to the outer surface of the pressure roller (64). Multiple sets of slots (65) are opened on the outer surface of the pressure roller (64) between the buffer pads (616). The bracket (614) is movably sleeved in the slots (65) and has a clearance fit with the outer surface of the pressure roller (64). The outer surfaces of the buffer pads (616) and the abutting rings (615) abut against the foil winding mold (3).

3. The foil winding equipment for transformer production according to claim 2, characterized in that, The buffer pad (616) is made of hard rubber, and a gap is left between the buffer pad (616) and the abutment ring (615).

4. The foil winding equipment for transformer production according to claim 3, characterized in that, The thickness of the sealing block (613) is less than the inner cavity depth of the sealing groove (69), and the transmission fluid (66) is made of kerosene.

5. A foil winding device for transformer production according to claim 4, characterized in that, There is a gap between the bottom of the bracket (614) and the top of the support frame (63). When the abutment ring (615) and the bracket (614) move downward, the inner wall of the abutment ring (615) never contacts the pressure roller (64).

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