Copper bar grinding device for mutual inductor

Abstract

The invention relates to the technical field of copper bar grinding, and particularly discloses a copper bar grinding device for a mutual inductor, which comprises a motor, an output shaft is arranged on the motor, a lower grinding wheel is fixedly connected to the outer surface of the upper end of the output shaft, and a lower bottom shell is fixedly connected to the position, corresponding to a small wheel, of the upper end of the motor; the whole grinding assembly is located above the lower grinding wheels, an upper grinding wheel is arranged in the grinding assembly, the upper grinding wheel and the lower grinding wheel are aligned, a gap is reserved between the upper grinding wheel and the lower grinding wheel, the copper bar is arranged between the upper grinding wheel and the lower grinding wheel, the double-face grinding effect is achieved at the same time, and the copper bar to be ground is fed into the gap between the upper grinding wheel and the lower grinding wheel through the upper grinding wheel and the lower grinding wheel. And through cooperation of the first electromagnet and the magnetic suction plate, the upper grinding wheel can be controlled to slide downwards to increase the friction force of the two faces of the copper bar after electrification, and then the grinding effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper bar polishing, in particular to a copper bar polishing device for a mutual inductor. Background Art

[0002] The copper busbar of the transformer is an important component used for current transmission and electrical connection in current transformers and voltage transformers. The copper busbar is usually made of copper material with high conductivity, such as T2 copper, to ensure good conductivity. During production, it will be processed into strips by stamping, cutting, etc. to meet the space requirements of the transformer during installation; After the initial processing, the existing copper bar is in the shape of a strip and punched. Since punching will cause burrs on the surface of the copper bar, the burrs need to be polished to avoid poor contact due to the burrs during use. The existing polishing method arranges multiple groups of copper bars neatly on the surface of the polishing equipment, and polishes the copper bar with a polishing wheel, but only one side of the copper bar can be polished. After polishing, the copper bar needs to be turned over and the back side needs to be polished, which is relatively inefficient. Therefore, we propose a copper bar polishing device for a mutual inductor. Summary of the invention

[0003] The object of the present invention is to provide a copper bar polishing device for a mutual inductor to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a copper bar grinding device for a mutual inductor, comprising a motor, an output shaft is provided on the motor, a lower grinding wheel is fixedly connected to the outer surface of the upper end of the output shaft, and a lower bottom shell is fixedly connected to the upper end of the motor at a position corresponding to the small wheel; A grinding assembly, wherein the grinding assembly is located above the lower grinding wheel as a whole, and includes an upper grinding wheel inside, the upper grinding wheel is aligned with the lower grinding wheel, and a gap is left in the middle, and a copper bar is placed between the upper grinding wheel and the lower grinding wheel, and simultaneously achieves a double-sided grinding effect; The feeding part is located at the position where the gap is formed between the upper grinding wheel and the lower grinding wheel. The copper bar is limited and guided while feeding, thereby increasing the stability of the grinding assembly and ensuring that both sides of the copper bar can be ground.

[0005] Among them, the grinding assembly also includes a connecting shell, and the connecting shell is designed as a "U"-shaped structure. One end of the connecting shell is fixedly connected to the upper end of the motor, and the other end is fixedly connected to the upper bottom shell near the side of the motor. The interior of the upper bottom shell is rotatably connected to the upper grinding wheel through a rotating shaft, and the interior of the connecting shell is rotatably connected to a transmission column through a rotating shaft. The outer surface of the transmission column near the lower end is provided with a transmission belt 1, and the other end of the transmission belt 1 is sleeved on the outer surface of the output shaft, and the outer surface of the transmission column near the upper end is provided with a transmission belt 2, and the other end of the transmission belt 2 is connected to the upper grinding wheel.

[0006] Among them, an electromagnet 1 is fixedly connected to the outer surface of the upper end of the connecting shell away from the transmission column, a through groove is opened at the center position of the electromagnet 1, the outer surface of the lower end of the through groove is rotatably connected to a transmission sleeve through a rotating shaft, a transmission groove is opened on the surface of the transmission sleeve, a transmission rod is slidably connected inside the transmission groove, a magnetic plate is fixedly connected to the outer surface of the upper end of the transmission rod, a spring is arranged between the outer surface of the upper end of the through groove and the magnetic plate, and the lower end of the transmission rod is fixedly connected to the center of the upper grinding wheel.

[0007] Wherein, the feeding part includes a guide frame, a copper bar is placed on the upper end of the guide frame, and limit clamps are clamped on both sides of the copper bar. An adjustment part is provided at the end of the limit clamp away from the copper bar, and the limit clamp is connected to the guide frame through the adjustment part. The port of the guide frame is aligned with the surface of the lower grinding wheel.

[0008] The limiting clamp is designed as an "L"-shaped structure as a whole, and the thickness of the limiting clamp is less than the thickness of the copper busbar. The limiting clamp is located above the guide frame and is in contact with the guide frame through the adjustment part.

[0009] Among them, the adjustment part includes an adjustment block, which is fixedly connected to the end of the limit clamp away from the copper busbar. The number of the adjustment blocks is two groups, and they correspond to the limit clamps. Threaded holes are opened on adjacent surfaces of the adjustment blocks, and threaded rods are threadedly connected inside the threaded holes. The threaded rods are bidirectional threads.

[0010] Among them, a sliding groove is opened through the center position of the guide frame, a sliding block is slidably connected inside the sliding groove, the sliding block and the sliding groove are matched with a "cross" structure design, the two sides of the sliding block near the upper end are fixedly connected with adjustment plates, the adjustment slots are opened at corresponding positions of the adjustment block and the adjustment plate, the adjustment plate is located inside the adjustment slot, a guide rod is fixedly connected inside the sliding slot, a guide slot is opened at corresponding positions of the sliding block and the guide rod, the guide rod passes through the guide slot, and a spring three is fixedly connected between the sliding block and the sliding slot.

[0011] Among them, the end of the sliding block away from the spring three is fixedly connected to a traction rope, the end of the traction rope away from the sliding block is wound with a reel, the outer surface of the lower bottom shell is fixedly connected to a motor, and the output end of the motor is fixedly connected to the reel.

[0012] Among them, the lower bottom shell and the guide frame are provided with notches at corresponding positions, the inner surface of the notch is provided with sliding grooves on both sides, a slider is slidably connected inside the sliding groove, the slider is fixedly connected to the guide frame, and a spring 2 is fixedly connected between the lower end of the guide frame and the notch.

[0013] Among them, the adjacent surfaces of the two groups of adjustment blocks are rotatably connected with a connecting rod through a rotating shaft, the outer surface of the upper end of the sliding block is fixedly connected with electromagnet 2, the upper end of electromagnet 2 is fixedly connected with a calibration plate, the surface of the calibration plate is slidably connected with a magnetic block, and the other end of the connecting rod is rotatably connected with the magnetic block.

[0014] The present invention has at least the following beneficial effects: Through a set of upper grinding wheels and a set of lower grinding wheels, the copper bar to be polished is sent into the gap between the two, and the upper and lower sides of the copper bar are polished at the same time, which improves the polishing efficiency. Through the cooperation of the electromagnet and the magnetic suction plate, after power is turned on, the upper grinding wheel will be controlled to slide downward to increase the friction between the two sides of the copper bar, thereby further improving the polishing effect; By setting up a guide frame, a long strip-shaped shape is adopted that conforms to the style of the copper bar to be polished, and a limit clamp is used to clamp the copper bar in a semi-suspended manner, so that the upper grinding wheel or the lower grinding wheel will not contact the limit clamp during polishing, thereby improving stability, and under the action of the motor, the sliding block is driven by the traction rope to push the copper bar to move in the direction of the motor to complete the polishing of the entire copper bar, and then the limit clamp is reset at a faster speed by releasing the stored force spring three, so that the copper bar is in a state where it can be shaken off, and through the mutual cooperation of the above structures, the polishing effect of the copper bar is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of another viewing angle of the present invention as a whole; Figure 3 This is a schematic diagram of the cross-section structure of the connection shell of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the exploded structure of the grinding assembly of the present invention; Figure 6 It is a schematic diagram of the cutaway structure of the grinding assembly of the present invention; Figure 7 It is a structural schematic diagram of the feeding part of the present invention; Figure 8 It is a structural schematic diagram of the slider and the spring 2 of the present invention; Fig. 9 It is a structural schematic diagram of the motor and the sliding block of the present invention; Fig.10 It is a schematic diagram of the explosion structure of the feeding part of the present invention; Fig.11 FIG. 2 is a schematic structural diagram of a second embodiment of the present invention.

[0016] In the figure: 1, motor; 10, copper bar; 11, lower bottom shell; 12, lower grinding wheel; 2, grinding assembly; 20, connecting shell; 21, transmission belt 1; 22, transmission column; 23, transmission belt 2; 24, upper bottom shell; 25, upper grinding wheel; 26, transmission rod; 27, transmission sleeve; 28, transmission slot; 29, electromagnet 1; 30, spring 1; 31, magnetic plate; 32, output shaft; 33, through slot; 4, feeding part; 40, guide frame; 41, Limit clamp; 42, adjustment part; 43, take-up wheel; 44, motor; 45, slider; 46, spring two; 47, traction rope; 48, slide groove; 49, guide rod; 50, slide block; 51, spring three; 52, guide groove; 53, adjustment plate; 54, threaded hole; 55, adjustment groove; 56, threaded rod; 57, notch; 58, slide groove; 59, adjustment block; 60, electromagnet two; 61, connecting rod; 62, magnetic block; 63, calibration plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-11 The present invention provides a technical solution: a copper bar 10 grinding device for a mutual inductor, comprising a motor 1, an output shaft 32 is provided on the motor 1, a lower grinding wheel 12 is fixedly connected to the outer surface of the upper end of the output shaft 32, and a lower bottom shell 11 is fixedly connected to the upper end of the motor 1 and the corresponding position of the small wheel; The grinding assembly 2 is located above the lower grinding wheel 12 as a whole, and includes an upper grinding wheel 25 inside. The upper grinding wheel 25 is aligned with the lower grinding wheel 12 with a gap in the middle. The copper bar 10 is placed between the upper grinding wheel 25 and the lower grinding wheel 12, and has a double-sided grinding effect, thereby improving the grinding efficiency. The feeding part 4 is located at the position where the gap is formed between the upper grinding wheel 25 and the lower grinding wheel 12. The copper bar 10 is limited and guided while feeding, thereby increasing the stability of the grinding component 2, ensuring that both sides of the copper bar 10 can be ground, and increasing the stability of the structure.

[0019] See also Figure 2-3The grinding assembly 2 also includes a connecting shell 20, which is designed as a "U"-shaped structure. One end of the connecting shell 20 is fixedly connected to the upper end of the motor 1, and the other end is fixedly connected to the side of the motor 1 with an upper bottom shell 24. The interior of the upper bottom shell 24 is rotatably connected to the upper grinding wheel 25 through a rotating shaft. The interior of the connecting shell 20 is rotatably connected to a transmission column 22 through a rotating shaft. The outer surface of the transmission column 22 near the lower end is sleeved with a transmission belt 21, and the other end of the transmission belt 21 is sleeved on the outer surface of the output shaft 32. The outer surface of the transmission column 22 near the upper end is sleeved with a transmission belt 23, and the transmission belt The other end of the second 23 is connected to the upper grinding wheel 25, and the connecting shell 20 can be spliced ​​by two groups, and the transmission column 22 is also spliced ​​by two groups, which is convenient for disassembly to maintain the upper grinding wheel 25 and the lower grinding wheel 12. The U-shaped connecting shell 20 can protect the transmission belt 1 21, the transmission belt 23 and the transmission column 22. The inner surfaces of the transmission belt 1 21 and the transmission belt 23 are provided with teeth, and the corresponding transmission column 22, the output shaft 32 and the transmission sleeve 27 are provided with tooth grooves to cooperate with the teeth to improve the transmission efficiency, so that the upper grinding wheel 25 and the lower grinding wheel 12 rotate synchronously, and the copper bar 10 placed in the middle is polished.

[0020] See also Figure 3-5 The outer surface of the upper end of the connecting shell 20 away from the transmission column 22 is fixedly connected with an electromagnet 29, and a through groove 33 is provided at the center of the electromagnet 29. The outer surface of the lower end of the through groove 33 is rotatably connected with a transmission sleeve 27 through a rotating shaft. The surface of the transmission sleeve 27 is provided with a transmission groove 28, and a transmission rod 26 is slidably connected inside the transmission groove 28. The upper outer surface of the transmission rod 26 is fixedly connected with a magnetic suction plate 31, and a spring is provided between the upper outer surface of the through groove 33 and the magnetic suction plate 31. 30, the lower end of the transmission rod 26 is fixedly connected to the center of the upper grinding wheel 25, and the electromagnet 29 is electrically connected to the motor 1. When the user presses the switch to start grinding, the electromagnet 29 is energized, and the magnetic plate 31 and the transmission rod 26 are driven to slide downward by magnetic force. Since the transmission sleeve 27 is rotatably connected to the through groove 33, the transmission rod 26 transmits the power of the transmission sleeve 27 to the upper grinding wheel 25, ensuring that the upper grinding wheel 25 can slide up and down while ensuring rotation, thereby improving the grinding effect and increasing the stability of the structure.

[0021] See also Figure 7-8 The feeding part 4 includes a guide frame 40, a copper bar 10 is placed on the upper end of the guide frame 40, and limit clamps 41 are clamped on both sides of the copper bar 10. An adjusting part 42 is provided at one end of the limit clamp 41 away from the copper bar 10, and the limit clamp 41 is connected to the guide frame 40 through the adjusting part 42. The port of the guide frame 40 is aligned with the surface of the lower grinding wheel 12. The setting of the guide frame 40 and the limit clamp 41 limits the left and right shaking of the copper bar 10, thereby improving the stability of the structure.

[0022] See also Figure 9-10 The limiting clip 41 is designed as an "L"-shaped structure as a whole, and the thickness of the limiting clip 41 is less than the thickness of the copper bar 10. The limiting clip 41 is located above the guide frame 40 and contacts the guide frame 40 through the adjustment part 42, ensuring that the limiting clip 41 will not contact the upper grinding wheel 25 or the lower grinding wheel 12 while limiting the copper bar 10, and only grinds the copper bar 10. A large gap is left in the rear half of the limiting clip 41, which is convenient for the sliding groove 48 to send all the copper bars 10 between the upper grinding wheel 25 and the lower grinding wheel 12, thereby ensuring the grinding effect.

[0023] See also Fig.10 The adjusting portion 42 includes an adjusting block 59, which is fixedly connected to one end of the limiting clamp 41 away from the copper bus 10. The adjusting blocks 59 are in two groups, corresponding to the limiting clamp 41. Threaded holes 54 are provided on adjacent surfaces of the adjusting blocks 59. Threaded rods 56 are threadedly connected inside the threaded holes 54. The threaded rods 56 are bidirectional threads. The distance between the adjusting block 59 and the limiting clamp 41 can be changed by rotating the threaded rods 56. Bidirectional equidistant threads are used to ensure that the moving distances of the two groups of limiting clamps 41 are equal.

[0024] See also Fig.10 The center of the guide frame 40 is provided with a sliding groove 48, and a sliding block 50 is slidably connected inside the sliding groove 48. The sliding block 50 and the sliding groove 48 are matched with each other in a "cross" structure design. Adjustment plates 53 are fixedly connected to both sides of the sliding block 50 near the upper end. Adjustment grooves 55 are provided at positions corresponding to the adjustment block 59 and the adjustment plate 53. The adjustment plate 53 is located inside the adjustment groove 55. A guide rod 49 is fixedly connected inside the sliding groove 48. A guide groove 52 is provided at positions corresponding to the guide rod 49. The guide rod 49 penetrates the guide groove 52. 2. A spring three 51 is fixedly connected between the sliding block 50 and the sliding groove 48. The adjusting plate 53 and the adjusting groove 55 can increase the stability of the limit clamp 41 when it slides. At the same time, the motor 44 is electrically connected to the motor 1. When the motor 1 switch is turned on, the motor 44 is also started at the same time, and the winding wheel 43 rotates. The sliding block 50 is pulled by the traction rope 47 to send the copper bar 10 to the bottom of the upper grinding wheel 25 along the sliding groove 48. The spring three 51 is in a power storage state and is directly reset after power failure. The reset speed is fast, which prevents the limit clamp 41 from bringing the copper bar 10 back. The user can shake off the copper bar 10 by shaking.

[0025] See also Figure 8-9 The end of the sliding block 50 away from the spring three 51 is fixedly connected to a traction rope 47, and the end of the traction rope 47 away from the sliding block 50 is wound with a reel 43. The outer surface of the lower bottom shell 11 is fixedly connected to a motor 44, and the output end of the motor 44 is fixedly connected to the reel 43.

[0026] See also Fig.10 The lower bottom shell 11 is provided with a notch 57 at the corresponding position of the guide frame 40, and the inner surface of the notch 57 is provided with a slide groove 58 on both sides, and a slider 45 is slidably connected inside the slide groove 58, and the slider 45 is fixedly connected to the guide frame 40, and a spring 26 is fixedly connected between the lower end of the guide frame 40 and the notch 57. The design of the above structure increases the margin of the guide frame 40. When the upper grinding wheel 25 moves downward under the adsorption of the electromagnet 29, the upper grinding wheel 25 will squeeze the guide frame 40 downward while contacting the copper bar 10. The guide frame 40 is limited by the slider 45 and the slide groove 58 to prevent the lower grinding wheel 12 from excessive wear and uneven grinding below the copper bar 10. When in use, one end of the copper bar 10 is directly slid along the limiting clip 41 into the gap between the upper grinding wheel 25 and the lower grinding wheel 12, and the tail of the copper bar 10 is stuck in the limiting clip 41, and the positioning is completed quickly, which is simple and fast.

[0027] Example 2: Please refer to Fig.11 The adjacent surfaces of the two groups of adjusting blocks 59 are rotatably connected with a connecting rod 61 through a rotating shaft. The outer surface of the upper end of the sliding block 50 is fixedly connected with an electromagnet 2 60. The upper end of the electromagnet 2 60 is fixedly connected with a calibration plate 63. The surface of the calibration plate 63 is slidably connected with a magnetic block 62. The other end of the connecting rod 61 is rotatably connected with the magnetic block 62. Different from the first embodiment, the electromagnet 2 60 is automatically controlled. The electromagnet 2 60 is also electrically connected to the motor 1. When the switch of the motor 1 is pressed, the electromagnet 2 60 is energized at the same time, and the magnetic block 62 is repelled by magnetic force and forced to move upward. The adjusting block 59 and the limit clamp 41 are driven by the connecting rod 61 to increase the clamping force of the copper bus 10, further increasing the stability. When the electromagnet 2 60 is powered off, it is automatically reset under the action of the spring, and the limit clamp 41 is opened to release the copper bus 10.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper bar grinding device for a mutual inductor, comprising a motor (1), wherein the motor (1) is provided with an output shaft (32), the upper end outer surface of the output shaft (32) is fixedly connected to a lower grinding wheel (12), and the upper end of the motor (1) is fixedly connected to a lower bottom shell (11) at a position corresponding to the small wheel, characterized in that: A grinding assembly (2), wherein the grinding assembly (2) is located above the lower grinding wheel (12) as a whole, and contains an upper grinding wheel (25) therein, wherein the upper grinding wheel (25) is aligned with the lower grinding wheel (12) with a gap in between, and the copper bar (10) is placed between the upper grinding wheel (25) and the lower grinding wheel (12), thereby achieving a double-sided grinding effect; A feeding portion (4), the feeding portion (4) being located at a position where a gap is formed between the upper grinding wheel (25) and the lower grinding wheel (12), and providing a limiting guide for the copper bar (10) while feeding; The feeding portion (4) comprises a guide frame (40), a copper bar (10) is placed on the upper end of the guide frame (40), limiting clamps (41) are clamped on both sides of the copper bar (10), an adjusting portion (42) is provided at one end of the limiting clamp (41) away from the copper bar (10), and the limiting clamp (41) is connected to the guide frame (40) via the adjusting portion (42), and a port of the guide frame (40) is aligned with the surface of the lower grinding wheel (12); The limiting clip (41) is designed as an "L"-shaped structure as a whole, and the thickness of the limiting clip (41) is less than the thickness of the copper busbar (10). The limiting clip (41) is located above the guide frame (40) and is in contact with the guide frame (40) through the adjustment portion (42).

2. The copper bar polishing device for mutual inductor according to claim 1, characterized in that: The grinding assembly (2) further comprises a connecting shell (20), wherein the connecting shell (20) is designed as a "U"-shaped structure, wherein one end of the connecting shell (20) is fixedly connected to the upper end of the motor (1), and the other end of the connecting shell (20) is fixedly connected to an upper bottom shell (24) on a side close to the motor (1), wherein the interior of the upper bottom shell (24) is rotatably connected to an upper grinding wheel (25) via a rotating shaft, wherein the interior of the connecting shell (20) is rotatably connected to a transmission column (22) via a rotating shaft, wherein a transmission belt 1 (21) is sleeved on an outer surface of the transmission column (22) close to a lower end, and the other end of the transmission belt 1 (21) is sleeved on an outer surface of an output shaft (32), wherein a transmission belt 2 (23) is sleeved on an outer surface of the transmission column (22) close to an upper end, and the other end of the transmission belt 2 (23) is connected to the upper grinding wheel (25).

3. The copper bar polishing device for mutual inductor according to claim 2, characterized in that: An electromagnet (29) is fixedly connected to the outer surface of the upper end of the connecting shell (20) away from the transmission column (22), a through groove (33) is provided at the center of the electromagnet (29), the outer surface of the lower end of the through groove (33) is rotatably connected to the transmission sleeve (27) via a rotating shaft, a transmission groove (28) is provided on the surface of the transmission sleeve (27), a transmission rod (26) is slidably connected inside the transmission groove (28), the outer surface of the upper end of the transmission rod (26) is fixedly connected to the magnetic attraction plate (31), a spring (30) is provided between the outer surface of the upper end of the through groove (33) and the magnetic attraction plate (31), and the lower end of the transmission rod (26) is fixedly connected to the center of the upper grinding wheel (25).

4. The copper bar polishing device for mutual inductor according to claim 2, characterized in that: The adjusting portion (42) comprises an adjusting block (59), the adjusting block (59) being fixedly connected to one end of the limiting clamp (41) away from the copper busbar (10), the adjusting blocks (59) being provided in two groups and corresponding to the limiting clamp (41), the adjacent surfaces of the adjusting blocks (59) being provided with threaded holes (54), the insides of the threaded holes (54) being threadedly connected with threaded rods (56), the threaded rods (56) being bidirectional threads.

5. The copper bar polishing device for mutual inductor according to claim 4, characterized in that: A sliding groove (48) is provided through the center of the guide frame (40), a sliding block (50) is slidably connected inside the sliding groove (48), the sliding block (50) and the sliding groove (48) are matched with each other in a "cross"-shaped structure design, both sides of the sliding block (50) close to the upper end are fixedly connected with adjustment plates (53), the adjustment block (59) and the adjustment plate (53) are provided with adjustment grooves (55) at corresponding positions, the adjustment plate (53) is located inside the adjustment groove (55), a guide rod (49) is fixedly connected inside the sliding groove (48), a guide groove (52) is provided at corresponding positions of the sliding block (50) and the guide rod (49), the guide rod (49) passes through the guide groove (52), and a spring (51) is fixedly connected between the sliding block (50) and the sliding groove (48).

6. The copper bar polishing device for mutual inductor according to claim 5, characterized in that: One end of the sliding block (50) away from the spring three (51) is fixedly connected to a traction rope (47), and one end of the traction rope (47) away from the sliding block (50) is wound around a reel (43). The outer surface of the lower base shell (11) is fixedly connected to a motor (44), and the output end of the motor (44) is fixedly connected to the reel (43).

7. The copper bar polishing device for mutual inductor according to claim 2, characterized in that: A notch (57) is provided at a position corresponding to the lower bottom shell (11) and the guide frame (40), and sliding grooves (58) are provided on both sides of the inner surface of the notch (57). A slider (45) is slidably connected inside the sliding groove (58), and the slider (45) is fixedly connected to the guide frame (40). A second spring (46) is fixedly connected between the lower end of the guide frame (40) and the notch (57).

8. The copper bar polishing device for mutual inductor according to claim 5, characterized in that: The adjacent surfaces of the two groups of adjustment blocks (59) are rotatably connected to a connecting rod (61) via a rotating shaft; the outer surface of the upper end of the sliding block (50) is fixedly connected to an electromagnet 2 (60); the upper end of the electromagnet 2 (60) is fixedly connected to a calibration plate (63); the surface of the calibration plate (63) is slidably connected to a magnetic attraction block (62); and the other end of the connecting rod (61) is rotatably connected to the magnetic attraction block (62).

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