Insulation paper ring chamfering device

Abstract

The utility model belongs to the technical field of transformer insulation part production equipment, and discloses an insulation paper ring chamfering device which comprises a frame body, an operation platform is arranged at the top of the frame body, a concave cavity is formed in the center of the operation platform, a chamfering disc cutter is arranged in the concave cavity, and the bottom of the chamfering disc cutter is connected to a driving device through a vertical cutter shaft penetrating through the operation platform. Two long-strip-shaped movable adjusting blocks are symmetrically arranged on the two sides of the concave cavity, a cavity used for pressing a paper ring is formed in the lower portion of the feeding end of each movable adjusting block, an anti-warping pressing nail is arranged on a block body of the movable adjusting block at the end, and a leaning wheel is arranged in the cavity far away from the anti-warping pressing nail; a long hole is formed in the position, from one fourth of the feeding end of the movable adjusting block to the other end of the movable adjusting block, of the block body, and the movable adjusting block is connected with the operation platform through the long hole and a fastening screw. The insulation paper ring processing quality can be improved, the production efficiency is improved, the potential safety hazard is reduced, and the labor is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer insulation component production equipment, specifically to an insulating paper ring chamfering device. Background Technology

[0002] Among transformer insulation products, there is a type called insulating paper rings. Insulating paper rings are an important material used to insulate internal metal components of transformers. Their main function is to provide a protective insulation layer for internal metal components during transformer operation, preventing faults such as current leakage, electric shock, and electrical breakdown. During the production of insulating paper rings, all edges and corners must be rounded or chamfered, and sharp corners and burrs are not allowed. The current common practice is to process them into rings using a circular cutting machine or engraving machine, and then manually chamfer and remove burrs from the top and bottom edges of the inner and outer circles using an angle grinder. This operation is inefficient, unsafe, and labor-intensive. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an insulating paper ring chamfering device, which overcomes the defects of manual chamfering in the prior art, and can improve the processing quality of insulating paper rings, increase production efficiency, reduce safety hazards, and save labor.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] An insulating paper ring chamfering device includes a frame with an operating platform at the top. A recessed cavity is located in the center of the operating platform, and a chamfering disc cutter is installed within the cavity. The bottom of the chamfering disc cutter is connected to a drive device via a vertical cutter shaft passing through the operating platform. Two elongated movable adjusting blocks are symmetrically arranged on both sides of the cavity. The lower part of the feed end of each movable adjusting block has a cavity for pressing the paper ring. Anti-warping pressure pins are provided on the blocks at the feed end of the movable adjusting blocks, and guide wheels are located in the cavities away from the anti-warping pressure pins. Elongated holes are provided on the blocks from one-quarter of the feed end of the movable adjusting blocks to the other end of the blocks. The movable adjusting blocks are connected to the operating platform through the elongated holes and fastening screws.

[0006] Preferably, the chamfering disc cutter tooth profile is an angled chamfering cutter or a rounded chamfering cutter; the most commonly used is a 0.75mm rounded corner, and different disc cutters can be designed according to the product thickness for backup.

[0007] Preferably, the driving device includes a motor and a vertical cutter shaft, with the upper shaft of the motor connected to the vertical cutter shaft.

[0008] Furthermore, the vertical cutter shaft and motor are both bolted to one side of the cutter shaft seat, and a lead screw nut and a slider are fixedly connected to the other side of the cutter shaft seat. The lead screw nut is threaded onto the lead screw of the lifting device, and the slider is movably connected to the guide rail. The lifting device includes a lead screw, a worm gear, a worm, a handwheel, and a guide rail. The lead screw and the guide rail are both fixedly connected to the frame. The lower end of the lead screw is connected to a worm gear and a worm fixed to the frame, and the worm is connected to the handwheel. Rotating the handwheel can drive the worm to rotate, thereby rotating the worm gear, which in turn drives the lead screw to rotate, thereby moving the lead screw nut up and down. The up and down movement of the lead screw nut causes the cutter shaft seat to move up and down along the guide rail fixed to the frame, thus realizing the up and down movement of the motor and the vertical cutter shaft.

[0009] Furthermore, the lead screw is a precision micro-pitch transmission lead screw, which ensures accurate adjustment of the up and down position of the disc cutter, making it easy for the cutting edge to be aligned with the chamfered part of the paper ring and ensuring the quality of the chamfer; the worm gear and worm have self-locking properties, so that after the disc cutter is adjusted up and down, it is not easy for it to move or change its up and down position.

[0010] Preferably, the operating platform surface is made of phenolic resin material; this prevents the product from generating metal foreign objects during the chamfering process (insulating products are not allowed to have metal foreign objects).

[0011] Preferably, the bottom of the anti-warping pin is a smooth spherical shape, which passes through the movable adjusting block via a threaded connection and is fixed with a locking nut. The anti-warping pin can be moved up and down by rotating it to press down the edges of paper rings of different thicknesses, preventing the paper rings from warping upwards during rotation and ensuring uniform chamfering on both the top and bottom surfaces. After adjustment, it can be locked in place with the locking nut. The spherical end of the anti-warping pin prevents scratching the paper rings.

[0012] Preferably, the distance between the chamfering cutter head and the two positioning devices is 80 mm.

[0013] Preferably, the movable adjusting block is 300 mm long, 40 mm wide, and 30 mm high; the cavity is 80 mm long, 40 mm wide, and 15 mm high.

[0014] Preferably, the guide wheel is 13mm thick and is fixed to the movable adjusting block by a pin. It serves as the fulcrum for the paper ring's rotation trajectory.

[0015] Preferably, the movable adjustment blocks are provided with an included angle, and the included angle between the two movable adjustment blocks is 60 degrees.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] In summary, this utility model overcomes the shortcomings of existing technologies by using mechanical equipment for chamfering instead of manual labor. It effectively solves the problems of poor precision, low efficiency, high labor costs, and poor safety caused by existing processing methods, thereby improving the quality of paper ring processing, increasing production efficiency, reducing safety hazards, and saving labor costs. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of this utility model;

[0019] Figure 2 This is a side view of the movable adjustable block structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 4 This is a top view schematic diagram of the chamfering disc cutter of this utility model;

[0022] In the diagram: 1. Frame; 2. Operating platform; 3. Chamfered disc cutter; 4. Vertical cutter shaft; 5. Movable adjusting block; 6. Paper ring; 7. Anti-warping pressure nail; 8. Support wheel; 9. Elongated hole; 10. Fastening screw; 11. Motor; 12. Cutter shaft seat; 13. Threaded nut; 14. Lead screw; 15. Slider; 16. Worm gear; 17. Worm; 18. Handwheel; 19. Guide rail. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] like Figure 1 As shown, this utility model is an insulating paper ring chamfering device, including a frame 1, an operating platform 2 on the top of the frame 1, a cavity (not shown) in the center of the operating platform 2, a chamfering disc cutter 3 in the cavity, and the bottom of the chamfering disc cutter 3 connected to a drive device (not shown) through a vertical cutter shaft 4 passing through the operating platform; two long strip-shaped movable adjustment blocks 5 are symmetrically arranged on both sides of the cavity, and a cavity (not shown) for pressing the paper ring 6 is provided at the lower part of the feeding end of the movable adjustment block 5; an anti-warping pressure nail 7 is provided on the block at the feeding end of the movable adjustment block 5, and a guide wheel 8 is provided in the cavity away from the anti-warping pressure nail 7; an elongated hole 9 is provided on the block from one-quarter of the feeding end of the movable adjustment block 5 to the other end of the movable adjustment block 5, and the movable adjustment block 5 is connected to the operating platform 2 through the elongated hole 9 and a fastening screw 10.

[0026] The drive device includes a motor 11, with a vertical cutter shaft 4 connected to the upper shaft of the motor 11. Both the vertical cutter shaft 4 and the motor 11 are fixed to one side of the cutter shaft seat 12 by bolts (not shown). A lead screw nut 13 and a slider 15 are fixedly connected to the other side of the cutter shaft seat 12. The lead screw nut 13 is threaded to the lead screw 14 of the lifting device (not shown), and the slider 15 is movably connected to the guide rail 19. The lifting device includes a lead screw 14, a worm gear 16, a worm 17, a handwheel 18, and a guide rail 19. Both the lead screw 14 and the guide rail 19 are fixedly connected to the frame 1. The lower end of the lead screw 14 is connected to the worm gear 16 and the worm 17, which are fixed to the frame 1. The worm 17 is connected to the handwheel 18. Rotating the handwheel 18 can drive the worm gear 17 to rotate, thereby causing the worm wheel 16 to rotate, which in turn drives the lead screw 14 to rotate, thereby causing the lead screw nut 13 to move up and down. The up and down movement of the lead screw nut 13 causes the cutter shaft seat 12 to move up and down along the guide rail 19 fixed on the frame 1, thus realizing the up and down movement of the motor 11 and the vertical cutter shaft 4.

[0027] In actual use, select the chamfering disc cutter 3 according to the thickness of the paper ring 6, put it on the top of the vertical cutter shaft 4, and tighten the nut (not shown) to secure the chamfering disc cutter 3 and the vertical cutter shaft 4; then loosen the fastening screw 10 on the elongated hole 9, move the movable adjustment block 5 back and forth to the appropriate position, place the paper ring 6 on the operating platform 2, turn the handwheel 18 to move the chamfering disc cutter 3 up and down until its cutting edge is initially aligned with the edge of the paper ring 6, then adjust the position of the movable adjustment block 5 so that the guide wheel 8 is close to the edge of the paper ring 6, tighten the fastening screw 10, turn the anti-warping pressure nail 7 to gently press the paper ring 6, and then use the locking nut (not shown) on the anti-warping pressure nail 7 to lock the anti-warping pressure nail 7; start the machine for a test cut, repeat the above steps, and adjust until the chamfering meets the requirements, then adjust the speed of the motor 11, press the paper ring 6 close to the two guide wheels 8, and rotate the paper ring 6 one revolution to complete the simultaneous chamfering of the edges on both sides of the outer diameter of the paper ring 6.

[0028] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A chamfering device for insulating paper rings, characterized in that: The device includes a frame, with an operating platform at the top. A central cavity is located on the operating platform, housing a chamfered disc cutter. The bottom of the chamfered disc cutter is connected to a drive unit via a vertical cutter shaft passing through the operating platform. Two elongated movable adjustable blocks are symmetrically arranged on either side of the cavity. The lower part of the feed end of each movable adjustable block has a cavity for pressing down on the paper ring. Anti-warping pressure pins are located on the block at the feed end, and guide wheels are located in the cavity away from the anti-warping pressure pins. Elongated holes are provided on the block from one-quarter of its feed end to the other end, allowing the movable adjustable blocks to connect to the operating platform via these holes and fastening screws.

2. The insulating paper ring chamfering device as described in claim 1, characterized in that: The chamfering disc cutter teeth are either beveled chamfering cutters or rounded chamfering cutters.

3. The insulating paper ring chamfering device as described in claim 1, characterized in that: The drive device includes a motor and a vertical cutter shaft, with the vertical cutter shaft connected to the upper shaft of the motor.

4. The insulating paper ring chamfering device as described in claim 3, characterized in that: The vertical cutter shaft and motor are both fixed to one side of the cutter shaft seat by bolts. A screw nut and a slider are fixedly connected to the other side of the cutter shaft seat. The screw nut of the slider is threaded to the lead screw of the lifting device, and the slider is movably connected to the guide rail. The lifting device includes a lead screw, a worm gear, a worm, a handwheel, and a guide rail. The guide rail and the lead screw are both fixedly connected to the frame. The lower end of the lead screw is connected to a worm gear and a worm fixed to the frame, and the worm is connected to the handwheel.

5. The insulating paper ring chamfering device as described in claim 1, characterized in that: The bottom of the anti-warping pressure nail is a smooth spherical shape. It passes through the movable adjustment block via a threaded connection and is fixed with a locking nut.

6. The insulating paper ring chamfering device as described in claim 1, characterized in that: The wheel is 13mm thick and is fixed to the movable adjusting block by a pin.

7. The insulating paper ring chamfering device as described in claim 1, characterized in that: The movable adjustment blocks are provided with an included angle, and the included angle between the two movable adjustment blocks is 60 degrees.

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