A carbon brush holder torsion spring automatic bending assembly jig

Abstract

The present invention relates to an automatic bending and assembly jig for a torsion spring of a carbon brush holder, comprising a shell and a carbon brush holder, the carbon brush holder comprising a limiting mechanism, the two ends of the shell being detachably connected to a first cover plate and a second cover plate, the interior of the shell being fixedly connected in sequence along a direction toward the first cover plate to a first mounting plate, a second mounting plate, and a third mounting plate, the side wall of the first mounting plate away from the second mounting plate being fixedly connected to a first cylinder and a second cylinder, the piston rod of the first cylinder being provided with a rotating mechanism, the piston rod of the second cylinder being provided with a telescopic mechanism, and the side wall of the third mounting plate being away from the second mounting plate being provided with a linkage mechanism. The beneficial effect of the present invention is that by providing a rotating mechanism, a telescopic mechanism, and a linkage mechanism, the torsion spring can be conveniently bent in a limited space, thereby enabling the torsion spring to be quickly assembled, with high flexibility in use, a simple structure, and ease of operation.

Description

Technical Field

[0001] The present invention relates to the technical field of torsion spring assembly equipment, and in particular to an automatic bending and assembly jig for a torsion spring of a carbon brush holder. Background Art

[0002] A torsion spring is a spring that relies on elastic deformation and is typically made from round wire wound into a spiral. Torsion springs achieve elastic deformation by twisting or rotating the material, storing or releasing mechanical energy. The end structures can be processed into single-twist, double-twist, or torsion bar shapes to suit different design requirements. When an external force acts on the spring arm or rotating shaft, the torsion spring twists and stores energy; when the external force disappears, it returns to its original position due to its elastic restoring force. Torsion springs are widely used in automobiles, electrical appliances, electronic equipment, medical devices, and industrial equipment, and require assembly using a fixture.

[0003] For example, an automatic assembly mechanism for a torsion spring in an air circuit breaker push handle, with publication number CN218137813U, includes a tool, a limiting groove, a locating pin, a reference surface, a torsion spring accommodating space, a torsion spring twisting head, a butt end face, and a protruding tooth. The tool surface is provided with a limiting groove, a locating pin is vertically arranged in the limiting groove, a reference surface is coaxially constructed around the locating pin, a torsion spring accommodating space is formed below the reference surface, and the torsion spring twisting head is provided with a butt end face. In this way, a reference surface is constructed for the torsion spring, and a limiting groove is constructed for the air circuit breaker push handle. A protruding tooth that revolves around an axis is arranged on the reference surface. The protruding tooth pushes the upper end of the torsion spring to compress the torsion spring, thereby automatically snapping the torsion spring into the push handle of the air circuit breaker.

[0004] However, the above-mentioned torsion spring assembly mechanism is fixed as a whole, occupies a large space, and requires replacement of limiting fixtures when installing torsion springs in different positions, resulting in poor flexibility in use, a complex structure, and inconvenient operation, which affects assembly efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic bending and assembly jig for a torsion spring of a carbon brush holder, so as to solve the problems of poor flexibility and low assembly efficiency of the existing automatic bending and assembly jig for a torsion spring of a carbon brush holder.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A carbon brush holder torsion spring automatic bending assembly jig includes a shell and a carbon brush holder, the carbon brush holder includes a limiting mechanism, the two ends of the shell are respectively detachably connected to a first cover plate and a second cover plate, the interior of the shell is fixedly connected to a first mounting plate, a second mounting plate and a third mounting plate in sequence along the direction toward the first cover plate, the side wall of the first mounting plate away from the second mounting plate is fixedly connected to a first cylinder and a second cylinder, the piston rod of the first cylinder is provided with a rotating mechanism, the piston rod of the second cylinder is provided with a telescopic mechanism, and the side wall of the third mounting plate away from the second mounting plate is provided with a linkage mechanism.

[0008] Furthermore, the shell is arranged in a cylindrical shape, and a plurality of connecting rods are fixedly connected between the edges of the first mounting plate and the second mounting plate, and a pair of connecting plates are symmetrically fixedly connected between the edges of the second mounting plate and the third mounting plate. The first mounting plate, the second mounting plate and the third mounting plate are all arranged perpendicular to the axial direction of the shell, and the piston rods of the first cylinder and the second cylinder are both arranged parallel to the axial direction of the shell.

[0009] Furthermore, the rotation mechanism includes a limit seat, which is vertically fixedly connected to the side wall of the first mounting plate facing the second mounting plate, and the inner side of the limit seat is slidably connected to a sliding seat, and the cross-section of the sliding seat is rectangular. The sliding seat is fixedly connected to the piston rod of the first cylinder, and the other end of the sliding seat is fixedly connected to the first sleeve, and the other end of the first sleeve passes through the second mounting plate and is slidably connected to it.

[0010] Furthermore, a rotating shaft is rotatably and slidably connected inside the first sleeve, and the other end of the rotating shaft passes through the third mounting plate and is rotatably connected thereto. A rotating groove is provided on the side wall of the connection between the rotating shaft and the third mounting plate, and a retaining spring is provided on the outside of the rotating groove. A sliding groove is provided on the side wall of the first sleeve, and the sliding groove is spirally arranged. A bayonet is fixedly connected to the side wall of one end of the rotating shaft connected to the first sleeve, and the bayonet is slidably connected to the sliding groove.

[0011] Furthermore, the telescopic mechanism includes a movable seat, which is fixedly connected to the piston rod of the second cylinder. The movable seat is vertically fixedly connected to a side wall of the movable seat away from the second cylinder with a pair of sliding rods. The other end of the sliding rod passes through the second mounting plate and is slidably connected to it, and the other end of the sliding rod is fixedly connected to the movable plate.

[0012] Furthermore, the side wall of the movable plate away from the sliding rod is vertically fixedly connected to a second sleeve, and the outer wall of the second sleeve is slidably connected to an outer sleeve on the side away from the movable plate. The other end of the outer sleeve passes through the third mounting plate, and the outer sleeve and the connecting plate are fixedly connected by fastening bolts. A spring is connected between the outer sleeve and the movable plate, and the spring is sleeved on the outside of the second sleeve.

[0013] Furthermore, the linkage mechanism includes a first gear, which is fixedly connected to the outer side of one end of the rotating shaft away from the second mounting plate, and the outer side of the outer sleeve away from the movable plate is rotatably connected to the second gear, and the first gear is meshed with the second gear.

[0014] Furthermore, a mounting ring is fixedly connected to a side wall of the second gear away from the third mounting plate, and the mounting ring and the second gear are coaxially arranged with the second sleeve, and a mounting groove is provided on the side wall of the mounting ring away from the second gear, and a shift rod is provided inside the mounting groove, and a plurality of threaded holes are provided on the side wall of the mounting ring facing the mounting groove, and the shift rod and the mounting groove are detachably connected by a bolt assembly, and a fixing block is fixedly connected to the outside of one end of the outer sleeve away from the movable plate, and the side wall of the fixing block is fixedly connected to the limiting rod, and the shift rod and the limiting rod are both arranged parallel to the axial direction of the second sleeve.

[0015] Furthermore, the limiting mechanism includes a top block, the side wall of the top block is fixedly connected to a mounting pin, a clamping block and a limiting groove are respectively provided on both sides of the mounting pin, the side wall of the clamping block is provided with a clamping groove, and the diameter of the mounting pin is smaller than the inner diameter of the second sleeve.

[0016] Furthermore, a mounting hole is provided on the surface of the first cover plate, the mounting ring extends to the outside of the mounting hole, and a hanging ring is fixedly connected to the edge of the outer wall of the second cover plate.

[0017] The beneficial effects of the present invention are:

[0018] The carbon brush holder torsion spring automatic bending and assembly jig of the present invention is provided with a rotating mechanism, a telescopic mechanism and a linkage mechanism, so that the torsion spring can be bent conveniently in a limited space, thereby quickly assembling the torsion spring. It has high flexibility in use, a simple structure and is easy to operate.

[0019] The carbon brush holder torsion spring automatic bending assembly jig of the present invention can limit the torsion spring during installation by providing a limiting mechanism to prevent the torsion spring from being misplaced or deformed. At the same time, the torsion spring can be quickly positioned, effectively improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0022] Figure 3A schematic diagram of the rotation mechanism of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the first sleeve of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0024] Figure 5 A schematic diagram of a telescopic mechanism of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the outer sleeve and the second sleeve of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0026] Figure 7 A schematic diagram of the linkage mechanism of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0027] Figure 8 A schematic side view of the linkage mechanism of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0028] Figure 9 This is a schematic diagram of a limiting mechanism of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention;

[0029] Figure 10 This is an enlarged schematic diagram of the structure at point A of an automatic bending and assembly jig for a torsion spring of a carbon brush holder according to the present invention.

[0030] Figure numerals: 1, housing; 2, first cover plate; 3, second cover plate; 4, lifting ring; 5, mounting hole; 6, limiting mechanism; 601, top block; 602, mounting pin; 603, clamping block; 604, clamping groove; 605, limiting groove; 7, first mounting plate; 8, first cylinder; 9, second cylinder; 10, second mounting plate; 11, connecting rod; 12, third mounting plate; 13, connecting plate; 14, rotating mechanism; 1401, limiting seat; 1402, sliding seat; 1403, first Sleeve; 1404, rotating shaft; 1405, slide groove; 1406, bayonet; 1407, rotating groove; 1408, retaining spring; 15, telescopic mechanism; 1501, movable seat; 1502, slide rod; 1503, movable plate; 1504, second sleeve; 1505, spring; 1506, outer sleeve; 1507, fastening bolt; 16, first gear; 17, second gear; 18, mounting ring; 19, mounting groove; 20, threaded hole; 21, shift rod; 22, limit rod. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] refer to Figure 1-2 The carbon brush holder torsion spring automatic bending assembly jig of this embodiment includes a shell 1 and a carbon brush holder. The carbon brush holder includes a limiting mechanism 6 for limiting the torsion spring during assembly. The shell 1 is cylindrical. The two ends of the shell 1 are detachably connected to the first cover plate 2 and the second cover plate 3. The interior of the shell 1 is fixedly connected to the first mounting plate 7, the second mounting plate 10 and the third mounting plate 12 in sequence along the direction toward the first cover plate 2. A plurality of connecting rods 11 are fixedly connected between the edges of the first mounting plate 7 and the second mounting plate 10. A pair of connecting plates 13 are symmetrically fixedly connected between the edges of the second mounting plate 10 and the third mounting plate 12. The first The sidewall of the mounting plate 7, away from the second mounting plate 10, is fixedly connected to a first cylinder 8 and a second cylinder 9. The piston rod of the first cylinder 8 is provided with a rotation mechanism 14 for driving the rotation of the first gear 16. The piston rod of the second cylinder 9 is provided with a telescopic mechanism 15 for pushing the second sleeve 1504 to assemble the torsion spring. A linkage mechanism is provided on the sidewall of the third mounting plate 12, away from the second mounting plate 10, for bending the end of the torsion spring. The first, second, and third mounting plates 7, 10, 12 are all arranged perpendicular to the axial direction of the housing 1, and the piston rods of the first and second cylinders 8, 9 are arranged parallel to the axial direction of the housing 1. During assembly of the torsion spring, the limiting mechanism 6 on the sidewall of the carbon brush holder is first used to limit the position. Then, the first and second cylinders 8 and 9 drive the rotation mechanism 14 and telescopic mechanism 15 to operate synchronously. When the rotation mechanism 14 operates, the linkage mechanism bends the end of the torsion spring, while the telescopic mechanism 15 pushes the torsion spring, completing the assembly of the torsion spring and the carbon brush holder.

[0033] refer to Figure 3-4The rotating mechanism 14 includes a limit seat 1401, which is vertically fixedly connected to the side wall of the first mounting plate 7 facing the second mounting plate 10. The inner side of the limit seat 1401 is slidably connected to a sliding seat 1402. The cross section of the sliding seat 1402 is rectangular. The sliding seat 1402 is fixedly connected to the piston rod of the first cylinder 8. The other end of the sliding seat 1402 is fixedly connected to a first sleeve 1403. The other end of the first sleeve 1403 passes through the second mounting plate 10 and is slidably connected thereto. The internal rotation of the first sleeve 1403 It is also slidably connected with a rotating shaft 1404, the other end of the rotating shaft 1404 passes through the third mounting plate 12 and is rotatably connected thereto, a rotating groove 1407 is provided on the side wall of the connection between the rotating shaft 1404 and the third mounting plate 12, and a retaining spring 1408 is provided on the outside of the rotating groove 1407, and a sliding groove 1405 is provided on the side wall of the first sleeve 1403, and the sliding groove 1405 is spirally arranged, and a bayonet 1406 is fixedly connected to the side wall of one end where the rotating shaft 1404 is connected to the first sleeve 1403, and the bayonet 1406 is slidably connected to the sliding groove 1405. When the rotating mechanism 14 is operating, the first cylinder 8 drives the sliding seat 1402 and the first sleeve 1403 to move along the limit seat 1401 toward the second mounting plate 10. When the first sleeve 1403 moves, the sliding groove 1405 on its side wall drives the locking pin 1406 to rotate, so that the rotating shaft 1404 starts to rotate. When the rotating shaft 1404 rotates, it is limited by the rotating groove 1407 and the retaining spring 1408, so that the rotating shaft 1404 only rotates during the movement of the first sleeve 1403.

[0034] refer to Figure 5-6 The telescopic mechanism 15 includes a movable seat 1501, which is fixedly connected to the piston rod of the second cylinder 9. The movable seat 1501 is vertically fixedly connected to a pair of sliding rods 1502 on the side wall away from the second cylinder 9. The other end of the sliding rod 1502 passes through the second mounting plate 10 and is slidably connected thereto, and the other end of the sliding rod 1502 is fixedly connected to a movable plate 1503; the side wall of the movable plate 1503 away from the sliding rod 1502 is vertically fixedly connected to a second sleeve 1504, and the outer wall of the second sleeve 1504 away from the side of the movable plate 1503 is slidably connected to an outer sleeve 1506, and the other end of the outer sleeve 1506 passes through the third mounting plate 12, and the outer sleeve 1506 is fixedly connected to the connecting plate 13 by a fastening bolt 1507. A spring 1505 is connected between the outer sleeve 1506 and the movable plate 1503, and the spring 1505 is sleeved on the outside of the second sleeve 1504. When the telescopic mechanism 15 is operating, the second cylinder 9 drives the movable seat 1501 and the slide rod 1502 to move away from the first mounting plate 7, so that the movable plate 1503 connected to the other end of the slide rod 1502 moves accordingly. When the movable plate 1503 moves, it drives the second sleeve 1504 to start moving along the outer sleeve 1506. At this time, the spring 1505 is compressed, generating elastic force on the movable plate 1503.

[0035] refer to Figure 7-9 The linkage mechanism includes a first gear 16, which is fixedly connected to the outer side of the rotating shaft 1404 away from the second mounting plate 10, and the outer side of the outer sleeve 1506 away from the movable plate 1503 is rotatably connected to the second gear 17, and the first gear 16 is meshed with the second gear 17; the side wall of the second gear 17 away from the third mounting plate 12 is fixedly connected to the mounting ring 18, and the mounting ring 18 and the second gear 17 are coaxially arranged with the second sleeve 1504, and the mounting ring 18 is away from the second gear 1 A mounting groove 19 is provided on one side wall of 7, and a shift rod 21 is provided inside the mounting groove 19. A plurality of threaded holes 20 are provided on the side wall of the mounting ring 18 facing the mounting groove 19. The shift rod 21 and the mounting groove 19 are detachably connected by a bolt assembly. A fixing block 1508 is fixedly connected to the outer side of one end of the outer sleeve 1506 away from the movable plate 1503. The side wall of the fixing block 1508 is fixedly connected to a limiting rod 22. The shift rod 21 and the limiting rod 22 are both arranged parallel to the axial direction of the second sleeve 1504. During assembly, the two ends of the torsion spring are placed on the top of the limit rod 22 and the shift rod 21 respectively. When the rotating shaft 1404 rotates, it drives the first gear 16 to start rotating. When the first gear 16 rotates, it drives the second gear 17 engaged with it to rotate accordingly, so that the mounting ring 18 on the side wall of the second gear 17 rotates accordingly. When the mounting ring 18 rotates, it drives the shift rod 21 connected to the side wall mounting groove 19 to rotate toward the direction of the limit rod 22, thereby bending the end of the torsion spring on the top of the shift rod 21, so that the torsion spring is in the assembly position.

[0036] refer to Figure 10 The limiting mechanism 6 includes a top block 601, and the side wall of the top block 601 is fixedly connected to a mounting pin 602. A clamping block 603 and a limiting groove 605 are respectively provided on both sides of the mounting pin 602. A clamping groove 604 is provided on the side wall of the clamping block 603. The diameter of the mounting pin 602 is smaller than the inner diameter of the second sleeve 1504. When assembling the torsion spring, first put it on the outside of the mounting pin 602, then put the end of the second sleeve 1504 on the outside of the mounting pin 602, and place the two ends of the torsion spring on the top of the limit rod 22 and the push rod 21 respectively, and bend it through the push rod 21 and the limit rod 22 until the distance between the two side ends of the torsion spring is smaller than the distance between the card slot 604 and the limit slot 605, so that it is in the assembly position. During the bending process of the torsion spring, the second sleeve 1504 is driven by the telescopic mechanism 15 to push the torsion spring toward the top block 601, so that the end of the torsion spring at the top of the limit rod 22 is stuck in the card slot 604 at the top of the block 603. At this time, the first cylinder 8 drives the rotating mechanism 14 to reset, so that the push rod 21 is reset accordingly. At this time, the other end of the torsion spring is stuck in the inside of the limit slot 605 under the action of its own elastic force, completing the assembly of the torsion spring.

[0037] The surface of the first cover plate 2 is provided with a mounting hole 5, and the mounting ring 18 extends to the outside of the mounting hole 5. The outer wall edge of the second cover plate 3 is fixedly connected with a lifting ring 4. The lifting ring 4 facilitates the quick disassembly and assembly of the housing 1.

[0038] Working principle: When assembling the torsion spring, first sleeve it on the outside of the mounting pin 602, then sleeve the end of the second sleeve 1504 on the outside of the mounting pin 602, and place the two ends of the torsion spring on the top of the limit rod 22 and the top of the shift rod 21 respectively; at this time, the first cylinder 8 drives the sliding seat 1402 and the first sleeve 1403 to move along the limit seat 1401 toward the second mounting plate 10, and when the first sleeve 1403 moves, it drives the latch 1406 to rotate through the slide groove 1405 on its side wall, so that the rotating When the first gear 16 is rotated, the second gear 17 meshing with the first gear 17 rotates accordingly, so that the mounting ring 18 on the side wall of the second gear 17 rotates accordingly. When the mounting ring 18 rotates, the lever 21 connected to the mounting groove 19 on the side wall thereof rotates toward the direction of the limiting rod 22, thereby bending the end of the torsion spring at the top of the lever 21 until the distance between the two side ends of the torsion spring is smaller than the distance between the retaining groove 604 and the limiting groove 605, so that the torsion spring is in the assembly position; when the first cylinder 8 is running, the second cylinder 9 synchronously drives the movable seat 1501 and the sliding rod 1502 to move away from the first mounting plate 7, so that the movable plate 1503 connected to the other end of the sliding rod 1502 moves accordingly, and when the movable plate 1503 moves, it drives the second sleeve 150 4 starts to move along the outer sleeve 1506, pushing the torsion spring outside the mounting pin 602 to move toward the top block 601, so that the end of the torsion spring located at the top of the limiting rod 22 is stuck in the clamping groove 604 at the top of the clamping block 603. At this time, the first cylinder 8 drives the rotating mechanism 14 to reset, so that the shifting rod 21 is reset and separated from the end of the torsion spring. At this time, the other end of the torsion spring is stuck in the inside of the limiting groove 605 under the action of its own elastic force, completing the assembly of the torsion spring. The provision of the lifting ring 4 facilitates the rapid disassembly and assembly of the housing 1.

[0039] In the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] The above embodiments are used to further illustrate the present invention, but the present invention is not limited to these specific embodiments. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be understood to be within the scope of protection of the present invention.

Claims

1. A carbon brush holder torsion spring automatic bending and assembly jig, characterized by: The carbon brush holder comprises a housing (1) and a carbon brush holder, wherein the carbon brush holder comprises a limiting mechanism (6), the two ends of the housing (1) are detachably connected to a first cover plate (2) and a second cover plate (3), the interior of the housing (1) is fixedly connected to a first mounting plate (7), a second mounting plate (10) and a third mounting plate (12) in sequence along a direction toward the first cover plate (2), the side wall of the first mounting plate (7) away from the second mounting plate (10) is fixedly connected to a first cylinder (8) and a second cylinder (9), the piston rod of the first cylinder (8) is provided with a rotating mechanism (14), the piston rod of the second cylinder (9) is provided with a telescopic mechanism (15), and the side wall of the third mounting plate (12) away from the second mounting plate (10) is provided with a linkage mechanism; The rotating mechanism (14) includes a limiting seat (1401), the limiting seat (1401) is vertically fixedly connected to a side wall of the first mounting plate (7) facing the second mounting plate (10), the inner side of the limiting seat (1401) is slidably connected to a sliding seat (1402), the cross-section of the sliding seat (1402) is rectangular, the sliding seat (1402) is fixedly connected to the piston rod of the first cylinder (8), the other end of the sliding seat (1402) is fixedly connected to a first sleeve (1403), and the other end of the first sleeve (1403) passes through the second mounting plate (10) and is slidably connected thereto; The first sleeve (1403) is internally rotatably and slidably connected to a rotating shaft (1404), the other end of the rotating shaft (1404) passes through the third mounting plate (12) and is rotatably connected thereto, a rotating groove (1407) is provided on the side wall at the connection between the rotating shaft (1404) and the third mounting plate (12), a retaining spring (1408) is provided on the outside of the rotating groove (1407), a sliding groove (1405) is provided on the side wall of the first sleeve (1403), the sliding groove (1405) is spirally arranged, a bayonet (1406) is fixedly connected to the side wall of one end of the rotating shaft (1404) connected to the first sleeve (1403), and the bayonet (1406) is slidably connected to the sliding groove (1405); The telescopic mechanism (15) includes a movable seat (1501), the movable seat (1501) is fixedly connected to the piston rod of the second cylinder (9), and a pair of sliding rods (1502) are vertically fixedly connected to the side wall of the movable seat (1501) away from the second cylinder (9), the other end of the sliding rod (1502) passes through the second mounting plate (10) and is slidably connected thereto, and the other end of the sliding rod (1502) is fixedly connected to the movable plate (1503); A second sleeve (1504) is vertically fixedly connected to a side wall of the movable plate (1503) away from the slide rod (1502); an outer sleeve (1506) is slidably connected to an outer wall of the second sleeve (1504) away from the movable plate (1503); The linkage mechanism includes a first gear (16), which is fixedly connected to the outer side of one end of the rotating shaft (1404) away from the second mounting plate (10), and the outer side of the outer sleeve (1506) away from the movable plate (1503) is rotatably connected to the second gear (17), and the first gear (16) is meshed with the second gear (17).

2. The automatic bending and assembly jig for a carbon brush holder torsion spring according to claim 1, characterized in that: The shell (1) is cylindrical in shape, a plurality of connecting rods (11) are fixedly connected between the edges of the first mounting plate (7) and the second mounting plate (10), a pair of connecting plates (13) are symmetrically fixedly connected between the edges of the second mounting plate (10) and the third mounting plate (12), the first mounting plate (7), the second mounting plate (10) and the third mounting plate (12) are all arranged perpendicular to the axial direction of the shell (1), and the piston rods of the first cylinder (8) and the second cylinder (9) are both arranged parallel to the axial direction of the shell (1).

3. The automatic bending and assembly jig for a carbon brush holder torsion spring according to claim 1, characterized in that: The other end of the outer sleeve (1506) passes through the third mounting plate (12), and the outer sleeve (1506) is fixedly connected to the connecting plate (13) by a fastening bolt (1507). A spring (1505) is connected between the outer sleeve (1506) and the movable plate (1503), and the spring (1505) is sleeved on the outside of the second sleeve (1504).

4. The automatic bending and assembly jig for a carbon brush holder torsion spring according to claim 1, characterized in that: The side wall of the second gear (17) away from the third mounting plate (12) is fixedly connected to a mounting ring (18), and the mounting ring (18) and the second gear (17) are both coaxially arranged with the second sleeve (1504). The side wall of the mounting ring (18) away from the second gear (17) is provided with a mounting groove (19), and a shift rod (21) is provided inside the mounting groove (19). The side wall of the mounting ring (18) facing the mounting groove (19) is provided with a plurality of threaded holes (20), and the shift rod (21) and the mounting groove (19) are detachably connected by a bolt assembly. The outer side of one end of the outer sleeve (1506) away from the movable plate (1503) is fixedly connected to a fixing block (1508), and the side wall of the fixing block (1508) is fixedly connected to a limiting rod (22), and the shift rod (21) and the limiting rod (22) are both arranged parallel to the axial direction of the second sleeve (1504).

5. The automatic bending and assembly jig for a carbon brush holder torsion spring according to claim 1, characterized in that: The limiting mechanism (6) comprises a top block (601), a side wall of the top block (601) is fixedly connected to a mounting pin (602), a clamping block (603) and a limiting groove (605) are respectively provided on both sides of the mounting pin (602), a side wall of the clamping block (603) is provided with a clamping groove (604), and the diameter of the mounting pin (602) is smaller than the inner diameter of the second sleeve (1504).

6. The automatic bending and assembly jig for a carbon brush holder torsion spring according to claim 4, characterized in that: A mounting hole (5) is provided on the surface of the first cover plate (2), the mounting ring (18) extends to the outside of the mounting hole (5), and a lifting ring (4) is fixedly connected to the edge of the outer wall of the second cover plate (3).

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