Side edge longitudinal bending and folding machine for transformer insulation paper

By introducing control components and assembly structures into the paper folding machine, the problem of inconsistent bending of insulating paper of different thicknesses was solved, achieving stable and accurate bending of insulating paper, and improving production efficiency and cost-effectiveness.

CN223864488UActive Publication Date: 2026-02-03NANTONG RIZHI ELECTRIC STUFF CO LTD
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Patent Information

Application Number
CN202520402070.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2026-02-03
Estimated Expiration
2035-03-10

AI Technical Summary

Technical Problem

When existing paper folding machines fold insulating paper of different thicknesses, the bending blades are difficult to press firmly, resulting in inconsistent bending effects and affecting the performance of the insulating paper.

Method used

A side longitudinal bending paper folding machine for transformer insulation paper was designed. By setting a control unit inside the machine body, including components such as a rotating shaft, gears, connecting rollers, and bending knives, and by using the cooperation of insert rods, pull rods, and support rods, the rubber sleeve can be opened and shortened to adapt to bending insulation paper of different thicknesses and ensure bending accuracy.

Benefits of technology

It enables stable bending of insulating paper of different thicknesses, avoids loosening of the insulating paper during transportation, improves the accuracy and adaptability of bending angle, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of paper folding machines, and discloses a side edge longitudinal bending paper folding machine for transformer insulation paper, which comprises a machine body, a motor, a first conveying roller and a second conveying roller, according to the side edge longitudinal bending paper folding machine for the transformer insulation paper, the motor is stopped, an insertion rod is pulled out firstly, so that the insertion rod is not inserted into an insertion hole any more, and then a pull rod is pushed upwards; the pull rod drives the rotating disc to rotate, the abutting groove in the rotating disc can abut against the sliding rod, and therefore the sliding rod is forced to slide along the limiting groove, the sliding rod drives the supporting rod to open the rubber sleeve in an equal proportion when sliding in the limiting groove, then the inserting rod is loosened, the spring is pulled back to the inserting rod, the inserting rod is inserted into the inserting hole, and the rotating disc cannot reset by itself. Therefore, the distance between the rubber sleeve and the bending knife is shortened, the insulation paper can be stably bent by the bending knife, the insulation paper bending device can be suitable for bending insulation paper of different thicknesses, the application range is wider, and adjustment is convenient and fast.
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Description

Technical Field

[0001] This utility model relates to the field of paper folding machine technology, specifically a side longitudinal bending paper folding machine for transformer insulating paper. Background Technology

[0002] A transformer insulation paper folding machine is a specialized piece of machinery used for manufacturing and folding transformer insulation paper. Insulation paper plays a crucial role in transformers, isolating the coils and core, preventing current leakage and electromagnetic interference, and withstanding certain mechanical stresses. The design and manufacture of transformer insulation paper folding machines must consider the quality of the insulation paper, production efficiency, and cost-effectiveness. A high-quality folding machine can improve the manufacturing efficiency of insulation paper, reduce production costs, and ensure that the performance of the insulation paper meets the requirements of power equipment.

[0003] Different transformers require different types of insulating paper, which necessitates the use of insulating paper of varying thicknesses. When folding paper, the bending blade may not be able to press the insulating paper tightly due to the different thicknesses, resulting in deviations in the bending effect and affecting subsequent use. Utility Model Content

[0004] The purpose of this invention is to provide a side longitudinal bending paper folding machine for transformer insulating paper to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a side longitudinal bending and folding paper folding machine for transformer insulating paper, comprising a machine body, a motor, a first conveyor roller and a second conveyor roller, wherein the inner side of the machine body is provided with a control unit for using insulating paper of different thicknesses;

[0006] The control unit includes a rotating shaft 1, a rotating shaft 2, a gear, a connecting roller, a bending knife, a control panel, a movable groove, a turntable, a contact groove, a ring, a socket, a pull rod, a plug rod, a spring, a limit groove, a sliding rod, an anti-detachment plate, a support rod, a rubber sleeve, and a bending groove. The rotating shaft 1 and the rotating shaft 2 are rotatably connected through the inner side of the machine body. The conveying roller 1 and the conveying roller 2 are both rotatably connected through the machine body. A motor is fixedly connected to the side of the machine body.

[0007] Preferably, the output shaft of the motor passes through and is fixedly connected to the first conveyor roller. The first conveyor roller and the second conveyor roller are connected by a synchronous pulley and a synchronous belt. The second conveyor roller and the first rotating shaft are connected by a synchronous pulley and a synchronous belt. The motor is started, and then the insulating paper is conveyed through the first conveyor roller and the second conveyor roller to the space between the rubber sleeve and the bending knife.

[0008] Preferably, both the first rotating shaft and the second rotating shaft are connected to gears through and fixedly connected. The gear through the first rotating shaft meshes with the gear through the second rotating shaft. The transmission wheel and the transmission belt motor will cause the first conveyor roller, the second conveyor roller, and the first rotating shaft to rotate synchronously. The first rotating shaft will drive the second rotating shaft to rotate in the opposite direction through the gear.

[0009] Preferably, a connecting roller is connected through and fixedly connected to the second rotating shaft, and a bending knife is connected through and fixedly connected to the connecting roller.

[0010] Preferably, a control disk is connected through and fixedly connected to the rotating shaft, a movable groove is provided on the side of the control disk, and a turntable is connected through and rotatably to the inner side of the control disk.

[0011] Preferably, the turntable has an abutment groove on its surface, a ring is connected through and fixedly to the turntable, the ring has an insertion hole on its surface, and a pull rod is fixedly connected to the side of the turntable, the pull rod passing through the movable groove.

[0012] Preferably, a rod is slidably connected through the surface of the control panel. Releasing the rod causes a spring to pull it back, inserting it into the socket and preventing the turntable from resetting itself. A spring is fixedly connected to the inner side of the rod and the surface of the control panel. A limit groove is formed on the surface of the control panel, and a sliding rod passes through the inner side of the limit groove. The sliding rod also passes through an abutment groove. An anti-detachment plate is fixedly connected to the left side of the sliding rod. A support rod is fixedly connected to the end of the sliding rod away from the anti-detachment plate. Pulling out the rod prevents it from being inserted into the socket, and then pushing the pull rod upward causes the turntable to rotate. A rubber sleeve is fitted to the surface of the support rod, and a bending groove is formed on the surface of the rubber sleeve.

[0013] Compared with the prior art, this utility model provides a side longitudinal bending folding paper folding machine for transformer insulating paper, which has the following beneficial effects:

[0014] 1. This transformer insulation paper uses a side longitudinal bending paper folding machine. Stop the motor, first pull out the insert rod so it is no longer inserted into the insertion hole, then push the pull rod upwards, causing the pull rod to drive the turntable to rotate. This allows the contact groove on the turntable to contact the sliding rod, forcing the sliding rod to slide along the limiting groove. As the sliding rod slides within the limiting groove, it drives the support rod to proportionally expand the rubber sleeve. Then, release the insert rod so the spring pulls it back, inserting it into the insertion hole. This prevents the turntable from resetting itself, thus shortening the gap between the rubber sleeve and the bending blade, allowing the insulation paper to be stably bent by the bending blade. This machine can adapt to bending insulation paper of different thicknesses, offering a wider range of applications and convenient and quick adjustment.

[0015] 2. The transformer insulation paper is folded by a side longitudinal bending paper folding machine. When the rubber sleeve is stretched proportionally by the support rod in the control unit, the insulation paper can be stably tightened. This prevents the insulation paper from becoming loose when it is conveyed by conveyor roller one and conveyor roller two, which would result in an inaccurate bending angle and affect the bending effect. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a magnified rear view of the structure of the present invention;

[0018] Figure 3 This is an enlarged schematic diagram of the control panel structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the expanded structure of the control panel of this utility model.

[0020] In the diagram: 1. Machine body; 2. Control unit; 21. Rotating shaft one; 22. Rotating shaft two; 23. Gear; 24. Connecting roller; 25. Bending knife; 26. Control panel; 27. Movable groove; 28. Turntable; 29. ​​Contact groove; 210. Ring; 211. Insertion hole; 212. Pull rod; 214. Insert rod; 215. Spring; 216. Limiting groove; 217. Slide rod; 218. Anti-detachment plate; 219. Support rod; 220. Rubber sleeve; 221. Bending groove; 3. Motor; 4. Conveyor roller one; 5. Conveyor roller two. Detailed Implementation

[0021] like Figures 1-4 As shown, this utility model provides a technical solution: a side longitudinal bending paper folding machine for transformer insulating paper, including a machine body 1, a motor 3, a first conveyor roller 4 and a second conveyor roller 5, and a control unit 2 for using insulating paper of different thicknesses is provided on the inner side of the machine body 1;

[0022] The control unit 2 includes a rotating shaft 21, a rotating shaft 22, a gear 23, a connecting roller 24, a bending knife 25, a control panel 26, a movable groove 27, a turntable 28, a contact groove 29, a ring 210, a socket 211, a pull rod 212, a plug rod 214, a spring 215, a limit groove 216, a sliding rod 217, an anti-detachment plate 218, a support rod 219, a rubber sleeve 220, and a bending groove 221. The rotating shaft 21 and the rotating shaft 22 are rotatably connected through the inner side of the machine body 1. The conveying roller 4 and the conveying roller 5 are both rotatably connected through the machine body 1. The motor 3 is fixedly connected to the side of the machine body 1. The output shaft of motor 3 passes through and is fixedly connected to conveyor roller 4. Conveyor roller 4 and conveyor roller 5 are connected by a synchronous pulley and synchronous belt. Conveyor roller 5 and shaft 21 are connected by a synchronous pulley and synchronous belt. When motor 3 is started, insulating paper is conveyed through conveyor roller 4 and conveyor roller 5 to the space between rubber sleeve 220 and bending knife 25. Gears 23 are both passed through and fixedly connected to shaft 21 and shaft 22. The gears 23 passing through shaft 21 and shaft 22 mesh with each other. Through the transmission pulley and transmission belt, motor 3 causes conveyor roller 4, conveyor roller 5, and shaft 21 to rotate synchronously. Shaft 21, through gears 23, drives shaft 22 to rotate in the opposite direction. A connecting roller 24 is passed through and fixedly connected to shaft 22. The connecting roller 24 is passed through and fixedly connected to bending knife 25. A control panel 26 is fixedly connected to a rotating shaft 21. A movable groove 27 is provided on the side of the control panel 26. A turntable 28 is rotatably connected to the inner side of the control panel 26. A contact groove 29 is provided on the surface of the turntable 28. A ring 210 is fixedly connected to the turntable 28. An insertion hole 211 is provided on the surface of the ring 210. A pull rod 212 is fixedly connected to the side of the turntable 28. The pull rod 212 passes through the movable groove 27.A rod 214 is slidably connected to the surface of the control panel 26. Releasing the rod 214 causes the spring 215 to pull it back, inserting it into the socket 211. This prevents the turntable 28 from resetting itself, thus shortening the gap between the rubber sleeve 220 and the bending blade 25, allowing the insulating paper to be stably bent by the bending blade 25. A spring 215 is fixedly connected to the inner side of the rod 214 and the surface of the control panel 26. A limit groove 216 is formed on the surface of the control panel 26, and a sliding rod 217 passes through the inner side of the limit groove 216. The sliding rod 217 also passes through an abutment groove 29. An anti-detachment plate 2 is fixedly connected to the left side of the sliding rod 217. 18. The end of the slide rod 217 away from the anti-detachment plate 218 is connected to the support rod 219. Pull out the insertion rod 214 so that the insertion rod 214 is no longer inserted into the insertion hole 211. Then push the pull rod 212 upward so that the pull rod 212 drives the turntable 28 to rotate. This allows the abutment groove 29 on the turntable 28 to abut the slide rod 217, thereby forcing the slide rod 217 to slide along the limiting groove 216. When the slide rod 217 slides in the limiting groove 216, it will drive the support rod 219 to proportionally expand the rubber sleeve 220. The surface of the support rod 219 is attached to the rubber sleeve 220, and the surface of the rubber sleeve 220 is provided with a bending groove 221.

[0023] Based on the above implementation method, when the paper folding machine bends the transformer insulating paper, the motor 3 is started first, and then the insulating paper is fed through the first conveyor roller 4 and the second conveyor roller 5 to the space between the rubber sleeve 220 and the bending knife 25. The transmission wheel and transmission belt of the motor 3 cause the first conveyor roller 4, the second conveyor roller 5, and the first rotating shaft 21 to rotate synchronously. The first rotating shaft 21, through the gear 23, drives the second rotating shaft 22 to rotate in the opposite direction, allowing the bending knife 25 to bend the insulating paper on the rubber sleeve 220. If the insulating paper is too thin, causing the distance between the bending knife 25 and the bending groove 221 to be too far, the motor 3 is stopped first, and the insertion rod 214 is pulled out so that it is no longer inserted into the insertion hole 211. Then, the paper is moved upwards... Pushing the pull rod 212 causes the turntable 28 to rotate, allowing the contact groove 29 on the turntable 28 to contact the slide rod 217, thus forcing the slide rod 217 to slide along the limiting groove 216. When the slide rod 217 slides within the limiting groove 216, it drives the support rod 219 to proportionally expand the rubber sleeve 220. Then, releasing the insertion rod 214 causes the spring 215 to pull back the insertion rod 214, inserting it into the insertion hole 211. This prevents the turntable 28 from resetting itself, thereby shortening the gap between the rubber sleeve 220 and the bending blade 25, allowing the insulating paper to be stably bent by the bending blade 25. This method can adapt to bending insulating paper of different thicknesses, offering a wider range of applications and convenient and quick adjustment.

[0024] Furthermore, when the rubber sleeve 220 is stretched proportionally by the support rod 219 in the control unit 2, the insulating paper can be stably tightened, preventing the insulating paper from becoming loose when it is conveyed by the first conveyor roller 4 and the second conveyor roller 5, which would result in an inaccurate bending angle and affect the bending effect.

[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A side longitudinal bending and folding paper folding machine for transformer insulating paper, comprising a machine body (1), a motor (3), a first conveyor roller (4), and a second conveyor roller (5), characterized in that: The inner side of the body (1) is provided with a control part (2) using insulating paper of different thicknesses. The control unit (2) includes a rotating shaft 1 (21), a rotating shaft 2 (22), a gear (23), a connecting roller (24), a bending knife (25), a control panel (26), a movable groove (27), a turntable (28), a contact groove (29), a ring (210), a socket (211), a pull rod (212), a plug rod (214), a spring (215), a limit groove (216), a slide rod (217), an anti-detachment plate (218), a support rod (219), a rubber sleeve (220), and a bending groove (221). The inner side of the machine body (1) is rotatably connected to the rotating shaft 1 (21) and the rotating shaft 2 (22). The conveying roller 1 (4) and the conveying roller 2 (5) are both rotatably connected to the machine body (1). The side of the machine body (1) is fixedly connected to the motor (3).

2. The side longitudinal bending and folding paper folding machine for transformer insulating paper according to claim 1, characterized in that: The output shaft of the motor (3) passes through the first conveyor roller (4) and is fixedly connected. The first conveyor roller (4) and the second conveyor roller (5) are connected by a synchronous pulley and a synchronous belt. The second conveyor roller (5) and the first rotating shaft (21) are connected by a synchronous pulley and a synchronous belt.

3. A side longitudinal bending and folding paper machine for transformer insulating paper according to claim 2, characterized in that: Both the first rotating shaft (21) and the second rotating shaft (22) are connected to gears (23), and the gear (23) through the first rotating shaft (21) meshes with the gear (23) through the second rotating shaft (22).

4. A side longitudinal bending and folding paper machine for transformer insulating paper according to claim 3, characterized in that: The second rotating shaft (22) is connected to a connecting roller (24) through and fixedly connected to a bending knife (25).

5. A side longitudinal bending and folding paper machine for transformer insulating paper according to claim 3, characterized in that: The rotating shaft (21) is connected to the control disk (26) through and fixedly connected. The control disk (26) has a movable groove (27) on its side and a turntable (28) is connected to the inside of the control disk (26) through and rotatably connected.

6. A side longitudinal bending and folding paper machine for transformer insulating paper according to claim 5, characterized in that: The turntable (28) has a contact groove (29) on its surface. A ring (210) is fixedly connected through the turntable (28). An insertion hole (211) is provided on the surface of the ring (210). A pull rod (212) is fixedly connected to the side of the turntable (28). The pull rod (212) passes through the movable groove (27).

7. A side longitudinal bending and folding paper folding machine for transformer insulating paper according to claim 5, characterized in that: A rod (214) is slidably connected through the surface of the control panel (26). A spring (215) is fixedly connected to the inner side of the rod (214) and the surface of the control panel (26). A limit groove (216) is opened on the surface of the control panel (26). A slide rod (217) is slid through the inner side of the limit groove (216). At the same time, the slide rod (217) is slid through the abutment groove (29). An anti-detachment plate (218) is fixedly connected to the left side of the slide rod (217). A support rod (219) is slid through and fixedly connected to the end of the slide rod (217) away from the anti-detachment plate (218). A rubber sleeve (220) is attached to the surface of the support rod (219). A bending groove (221) is opened on the surface of the rubber sleeve (220).