Automatic bending and assembling jig for torsion spring of carbon brush holder

Abstract

The invention relates to a carbon brush holder torsion spring automatic bending and assembling jig which comprises a shell and a carbon brush support, the carbon brush support comprises a limiting mechanism, and the two ends of the shell are detachably connected with a first cover plate and a second cover plate respectively. A first mounting plate, a second mounting plate and a third mounting plate are sequentially and fixedly connected to the interior of the shell in the direction facing the first cover plate, a first air cylinder and a second air cylinder are fixedly connected to the side wall of the side, away from the second mounting plate, of the first mounting plate, and a piston rod of the first air cylinder is provided with a rotating mechanism; a telescopic mechanism is arranged on a piston rod of the second air cylinder, and a linkage mechanism is arranged on the side wall of the side, away from the second mounting plate, of the third mounting plate. The torsion spring assembling device has the beneficial effects that by arranging the rotating mechanism, the telescopic mechanism and the linkage mechanism, bending of the torsion spring can be conveniently achieved in a limited space, so that assembling of the torsion spring can be rapidly achieved, the use flexibility is high, the structure is simple, and operation is convenient.

Description

Technical Field

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

[0002] A torsion spring is a spring based on elastic deformation, usually formed by winding round wire into a spiral shape. The torsion spring realizes elastic deformation by twisting or rotating the material, stores or releases mechanical energy. The end structure of the torsion spring can be processed into shapes such as single twist, double twist or torsion bar to adapt to different design requirements. When an external force acts on the spring arm or the rotating shaft, the torsion spring twists and stores energy; after the external force disappears, it returns to the initial position by relying on the elastic restoring force. Torsion springs are widely used in fields such as automobiles, electrical appliances, electronic devices, medical devices and industrial equipment, and need to be assembled by jigs when in use.

[0003] For example, an automatic assembly mechanism for the torsion spring of an air circuit breaker push handle with the publication number CN218137813U includes a tooling, a limit sunk groove, a positioning pin, a reference surface, a torsion spring accommodation space, a torsion spring torsion head, a docking end surface, and a convex tooth. A limit sunk groove is formed on the surface of the tooling, a positioning pin is vertically arranged in the limit sunk groove, a reference surface is coaxially constructed around the positioning pin, and a torsion spring accommodation space is formed below the reference surface. The torsion spring torsion head is provided with a docking end surface. By the above method, a reference surface is constructed for the torsion spring, a limit sunk groove is constructed for the air circuit breaker push handle, a convex tooth that revolves around the axis is arranged on the reference surface, and the upper end of the torsion spring is pushed by the convex tooth to compress the torsion spring, so that the torsion spring is automatically clamped into the push handle of the air circuit breaker.

[0004] However, the above-mentioned torsion spring assembly mechanism is integrally fixedly arranged, occupies a large space, needs to replace the limit tooling when installing torsion springs at different positions, has poor flexibility in use, and has a complex structure, is not convenient to operate, and affects the assembly efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a jig for automatically bending and assembling the torsion spring of a carbon brush holder to solve the problems of poor flexibility in use and low assembly efficiency of the existing jig for automatically bending and assembling the torsion spring of a carbon brush holder.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A carbon brush holder torsion spring automatic bending and assembling fixture, comprising a housing and a carbon brush bracket. The carbon brush bracket includes a limiting mechanism. The two ends of the housing are respectively detachably connected with a first cover plate and a second cover plate. Inside the housing, a first mounting plate, a second mounting plate and a third mounting plate are fixedly connected in sequence along the direction towards the first cover plate. On the side wall of the first mounting plate away from the second mounting plate, a first cylinder and a second cylinder are fixedly connected. A rotating mechanism is arranged on the piston rod of the first cylinder, and a telescoping mechanism is arranged on the piston rod of the second cylinder. A linkage mechanism is arranged on the side wall of the third mounting plate away from the second mounting plate.

[0007] Further, the housing is arranged in a cylindrical shape. A plurality of connecting rods are fixedly connected between the edges of the first mounting plate and the second mounting plate. A pair of connecting plates are symmetrically and 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 perpendicular to the axial direction of the housing. The piston rods of the first cylinder and the second cylinder are both parallel to the axial direction of the housing.

[0008] Further, the rotating mechanism includes a limiting seat which is vertically and fixedly connected to the side wall of the first mounting plate facing the second mounting plate. A sliding seat is slidably connected inside the limiting seat. The cross-section of the sliding seat is rectangular. The sliding seat is fixedly connected to the piston rod of the first cylinder. The other end of the sliding seat is fixedly connected with a first sleeve. The other end of the first sleeve penetrates through the second mounting plate and is slidably connected therewith.

[0009] Further, a rotating shaft is rotatably and slidably connected inside the first sleeve. The other end of the rotating shaft penetrates through the third mounting plate and is rotatably connected therewith. A rotating groove is formed on the side wall of the connection part of the rotating shaft and the third mounting plate. A snap ring is sleeved outside the rotating groove. A sliding groove is formed on the side wall of the first sleeve. The sliding groove is arranged in a spiral shape. A snap pin is fixedly connected to the side wall of the end of the rotating shaft connected with the first sleeve. The snap pin is slidably connected with the sliding groove.

[0010] Further, the telescoping mechanism includes a movable seat which is fixedly connected to the piston rod of the second cylinder. A pair of sliding rods are vertically and fixedly connected to the side wall of the movable seat away from the second cylinder. The other ends of the sliding rods penetrate through the second mounting plate and are slidably connected therewith. The other ends of the sliding rods are fixedly connected with a movable plate.

[0011] Further, a second sleeve is vertically and fixedly connected to the side wall of the movable plate away from the sliding rods. An outer sleeve is slidably connected to the outer wall of the second sleeve away from the movable plate. The other end of the outer sleeve penetrates through the third mounting plate. The outer sleeve and the connecting plate are fixedly connected by a fastening bolt. A spring is connected between the outer sleeve and the movable plate. The spring is sleeved outside the second sleeve.

[0012] Further, the linkage mechanism includes a first gear fixedly connected to the outer side of one end of the rotating shaft away from the second mounting plate. A second gear is rotatably connected to the outer side of the outer sleeve away from the movable plate. The first gear is meshed with the second gear.

[0013] Further, a mounting ring is fixedly connected to the side wall of the second gear away from the third mounting plate. The mounting ring and the second gear are coaxially arranged with the second sleeve. A mounting groove is formed in the side wall of the mounting ring away from the second gear. A dial rod is arranged inside the mounting groove. A plurality of threaded holes are formed in the side wall of the mounting ring facing the mounting groove. The dial rod and the mounting groove are detachably connected by a bolt assembly. A fixing block is fixedly connected to the outer side of one end of the outer sleeve away from the movable plate. A limiting rod is fixedly connected to the side wall of the fixing block. The dial rod and the limiting rod are both arranged parallel to the axis of the second sleeve.

[0014] Further, the limiting mechanism includes a top block. A mounting pin is fixedly connected to the side wall of the top block. A clamping block and a limiting groove are respectively arranged on both sides of the mounting pin. A clamping groove is formed in the side wall of the clamping block. The diameter of the mounting pin is smaller than the inner diameter of the second sleeve.

[0015] Further, a mounting hole is formed in the surface of the first cover plate. The mounting ring extends to the outside of the mounting hole. A lifting ring is fixedly connected to the edge of the outer side wall of the second cover plate.

[0016] The beneficial effects of the present invention are as follows: For the carbon brush holder torsion spring automatic bending and assembling jig of the present invention, by providing a rotating mechanism, a telescopic mechanism and a linkage mechanism, the bending of the torsion spring can be conveniently realized in a limited space, so that the assembling of the torsion spring can be quickly realized. It has high use flexibility, and the structure is simple and easy to operate.

[0017] For the carbon brush holder torsion spring automatic bending and assembling jig of the present invention, by providing a limiting mechanism, the torsion spring can be limited during the installation of the torsion spring to avoid the torsion spring from being misaligned or deformed. At the same time, the torsion spring can be quickly positioned, effectively improving the assembling efficiency. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of an automatic bending and assembling jig for a carbon brush holder torsion spring of the present invention; Figure 2 It is a schematic diagram of the internal structure of an automatic bending and assembling jig for a carbon brush holder torsion spring of the present invention; Figure 3 It is a schematic diagram of the rotating mechanism of an automatic bending and assembling jig for a carbon brush holder torsion spring of the present invention; Figure 4Schematic diagram of the connection structure between the rotating shaft and the first sleeve of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 5 Schematic diagram of the telescopic mechanism of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 6 Schematic diagram of the connection structure between the outer sleeve and the second sleeve of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 7 Schematic diagram of the linkage mechanism of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 8 Side view schematic diagram of the linkage mechanism of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 9 Schematic diagram of the limiting mechanism of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention; Figure 10 Enlarged schematic diagram of the structure at position A of a jig for automatically bending and assembling the torsion spring of a carbon brush holder according to the present invention.

[0019] Reference 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, sliding groove; 1406, clamping pin; 1407, rotating groove; 1408, snap ring; 15, telescopic mechanism; 1501, movable seat; 1502, sliding 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, lever; 22, limiting rod. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0021] Reference Figure 1-2, the automatic bending and assembling fixture for the carbon brush holder torsion spring of this embodiment includes a housing 1 and a carbon brush holder. The carbon brush holder includes a limiting mechanism 6 for limiting the torsion spring during assembly. The housing 1 is arranged in a cylindrical shape, and a first cover plate 2 and a second cover plate 3 are respectively detachably connected to both ends of the housing 1. Inside the housing 1, a first mounting plate 7, a second mounting plate 10, and a third mounting plate 12 are sequentially fixedly connected in the direction towards 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. A first cylinder 8 and a second cylinder 9 are fixedly connected to the side wall of the first mounting plate 7 away from the second mounting plate 10. A rotating mechanism 14 is arranged on the piston rod of the first cylinder 8 for driving the first gear 16 to rotate. A telescopic mechanism 15 is arranged on the piston rod of the second cylinder 9 for pushing the second sleeve 1504 to assemble the torsion spring. A linkage mechanism is arranged on the side wall of the third mounting plate 12 away from the second mounting plate 10 for bending the end of the torsion spring; the first mounting plate 7, the second mounting plate 10, and the third mounting plate 12 are all arranged perpendicular to the axis of the housing 1, and the piston rods of the first cylinder 8 and the second cylinder 9 are both arranged parallel to the axis of the housing 1. When assembling the torsion spring, first, it is limited by the limiting mechanism 6 on the side wall of the carbon brush holder, and then the first cylinder 8 and the second cylinder 9 drive the rotating mechanism 14 and the telescopic mechanism 15 to operate synchronously. When the rotating mechanism 14 operates, the end of the torsion spring is bent through the linkage mechanism, and at the same time, the telescopic mechanism 15 pushes the torsion spring to complete the assembly of the torsion spring and the carbon brush holder.

[0022] Reference Figure 3-4, the rotating mechanism 14 includes a limit seat 1401 which is vertically and fixedly connected to the side wall of the first mounting plate 7 facing the second mounting plate 10. A sliding seat 1402 is slidably connected inside the limit seat 1401. 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 penetrates through the second mounting plate 10 and is slidably connected thereto. A rotating shaft 1404 is rotatably and slidably connected inside the first sleeve 1403. The other end of the rotating shaft 1404 penetrates through the third mounting plate 12 and is rotatably connected thereto. A rotating groove 1407 is formed in the side wall of the connection between the rotating shaft 1404 and the third mounting plate 12. A snap ring 1408 is sleeved outside the rotating groove 1407. A chute 1405 is formed in the side wall of the first sleeve 1403. The chute 1405 is spiral. A pin 1406 is fixedly connected to the side wall of the end of the rotating shaft 1404 connected to the first sleeve 1403. The pin 1406 is slidably connected to the chute 1405. When the rotating mechanism 14 operates, the first cylinder 8 drives the sliding seat 1402 and the first sleeve 1403 to move along the limit seat 1401 towards the second mounting plate 10. When the first sleeve 1403 moves, it drives the pin 1406 to rotate through the chute 1405 on its side wall, causing the rotating shaft 1404 to start rotating. When the rotating shaft 1404 rotates, it is limited by the rotating groove 1407 and the snap ring 1408, so that the rotating shaft 1404 only rotates during the movement of the first sleeve 1403.

[0023] Reference 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. A pair of slide bars 1502 are vertically and fixedly connected to the side wall of the movable seat 1501 away from the second cylinder 9. The other ends of the slide bars 1502 penetrate through the second mounting plate 10 and are slidably connected thereto. The other ends of the slide bars 1502 are fixedly connected to a movable plate 1503. A second sleeve 1504 is vertically and fixedly connected to the side wall of the movable plate 1503 away from the slide bars 1502. The outer wall of the side of the second sleeve 1504 away from the movable plate 1503 is slidably connected to an outer sleeve 1506. The other end of the outer sleeve 1506 penetrates through the third mounting plate 12. The outer sleeve 1506 and the connecting plate 13 are fixedly connected by a fastening bolt 1507. A spring 1505 is connected between the outer sleeve 1506 and the movable plate 1503. The spring 1505 is sleeved outside the second sleeve 1504. When the telescopic mechanism 15 operates, the second cylinder 9 drives the movable seat 1501 and the slide bars 1502 to move away from the first mounting plate 7, causing the movable plate 1503 connected to the other ends of the slide bars 1502 to move 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 an elastic force on the movable plate 1503.

[0024] Reference Figure 7-9 , the linkage mechanism includes a first gear 16, the first gear 16 is fixedly connected to the outer side of one end of the rotating shaft 1404 away from the second mounting plate 10, the outer side of one side of the outer sleeve 1506 away from the movable plate 1503 is rotatably connected to a second gear 17, and the first gear 16 is meshed and connected with the second gear 17; a mounting ring 18 is fixedly connected to the side wall of one side of the second gear 17 away from the third mounting plate 12, the mounting ring 18 and the second gear 17 are both coaxially arranged with the second sleeve 1504, a mounting groove 19 is formed in the side wall of one side of the mounting ring 18 away from the second gear 17, a dial rod 21 is arranged inside the mounting groove 19, a plurality of threaded holes 20 are formed in the side wall of the mounting ring 18 facing the mounting groove 19, and the dial rod 21 and the mounting groove 19 are detachably connected through 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, and a limiting rod 22 is fixedly connected to the side wall of the fixing block 1508. The dial rod 21 and the limiting rod 22 are both arranged parallel to the axial direction of the second sleeve 1504. During assembly, both ends of the torsion spring are respectively placed on the tops of the limiting rod 22 and the dial rod 21. When the rotating shaft 1404 rotates, the first gear 16 starts to rotate. When the first gear 16 rotates, the second gear 17 meshed with it 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 dial rod 21 connected in the mounting groove 19 on its side wall rotates towards the direction of the limiting rod 22, thereby bending the end of the torsion spring on the top of the dial rod 21, so that the torsion spring is in the to-be-assembled position.

[0025] Reference Figure 10 , the limiting mechanism 6 includes a top block 601, a mounting pin 602 is fixedly connected to the side wall of the top block 601, a clamping block 603 and a limiting groove 605 are respectively arranged on both sides of the mounting pin 602, a clamping groove 604 is formed in the side wall of the clamping block 603, and the diameter of the mounting pin 602 is smaller than the inner diameter of the second sleeve 1504. When assembling the torsion spring, first, the torsion spring is sleeved on the outside of the mounting pin 602, then the end of the second sleeve 1504 is sleeved on the outside of the mounting pin 602, and both ends of the torsion spring are respectively placed on the tops of the limiting rod 22 and the dial rod 21, and it is bent through the dial rod 21 and the limiting rod 22 until the distance between the two ends of the torsion spring is smaller than the distance between the clamping groove 604 and the limiting groove 605, so that it is in the to-be-assembled position. During the process of bending the torsion spring, the second sleeve 1504 moves the torsion spring towards the direction of the top block 601 under the drive of the telescopic mechanism 15, so that the end of the torsion spring located on the top of the limiting rod 22 is stuck into the clamping groove 604 on the top of the clamping block 603. At this time, the first cylinder 8 drives the rotating mechanism 14 to reset, so that the dial rod 21 resets accordingly. At this time, the other end of the torsion spring is stuck into the inside of the limiting groove 605 under the action of its own elastic force, and the assembly of the torsion spring is completed.

[0026] The surface of the first cover plate 2 is provided with mounting holes 5, and the mounting ring 18 extends to the outside of the mounting holes 5. A lifting ring 4 is fixedly connected to the edge of the outer side wall of the second cover plate 3. By providing the lifting ring 4, it is convenient to quickly disassemble and assemble the housing 1.

[0027] Working principle: When assembling the torsion spring, first sleuth it on the outside of the mounting pin 602, then sleuth 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 tops of the limiting rod 22 and the lever 21 respectively; at this time, the first cylinder 8 drives the sliding seat 1402 and the first sleeve 1403 to move along the limiting seat 1401 towards the direction of the second mounting plate 10. When the first sleeve 1403 moves, the clamping pin 1406 is driven to rotate through the chute 1405 on its side wall, so that the rotating shaft 1404 starts to rotate. When the rotating shaft 1404 rotates, under the blocking and limiting of the snap spring 1408, the rotating shaft 1404 only rotates during the movement of the first sleeve 1403. 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 meshing 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, the lever 21 connected in the mounting groove 19 on its side wall rotates towards the direction of the limiting rod 22 accordingly, thereby bending the end of the torsion spring on the top of the lever 21 until the distance between the two ends of the torsion spring is less than the distance between the clamping groove 604 and the limiting groove 605, so that the torsion spring is in the waiting assembly position; when the first cylinder 8 operates, 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. When the movable plate 1503 moves, it drives the second sleeve 1504 to move along the outer sleeve 1506, pushing the torsion spring outside the mounting pin 602 towards the direction of the top block 601, so that one end of the torsion spring located on the top of the limiting rod 22 is caught in the clamping groove 604 on the top of the clamping block 603. At this time, the first cylinder 8 drives the rotating mechanism 14 to reset, so that the lever 21 resets accordingly and disengages from the end of the torsion spring. At this time, the other end of the torsion spring is caught in the inside of the limiting groove 605 under the action of its own elastic force, completing the assembly of the torsion spring; by providing the lifting ring 4, it is convenient to quickly disassemble and assemble the housing 1.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be understood to be within the protection scope of the present invention.

Claims

1. An automatic bending and assembling fixture for a carbon brush holder torsion spring, characterized in that: It includes a housing (1) and a carbon brush holder. The carbon brush holder includes a limiting mechanism (6). The two ends of the housing (1) are respectively detachably connected with a first cover plate (2) and a second cover plate (3). Inside the housing (1), a first mounting plate (7), a second mounting plate (10), and a third mounting plate (12) are fixedly connected in sequence along the direction towards the first cover plate (2). On the side wall of the first mounting plate (7) away from the second mounting plate (10), a first cylinder (8) and a second cylinder (9) are fixedly connected. A rotating mechanism (14) is arranged on the piston rod of the first cylinder (8), and a telescoping mechanism (15) is arranged on the piston rod of the second cylinder (9). A linkage mechanism is arranged on the side wall of the third mounting plate (12) away from the second mounting plate (10).

2. The automatic bending and assembling fixture for the carbon brush holder torsion spring according to claim 1, wherein: The housing (1) is arranged in a cylindrical 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 and 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 housing (1). The piston rods of the first cylinder (8) and the second cylinder (9) are both arranged parallel to the axial direction of the housing (1).

3. The automatic bending and assembling fixture for the carbon brush holder torsion spring according to claim 1, wherein: The rotating mechanism (14) includes a limiting seat (1401). The limiting seat (1401) is vertically and fixedly connected to the side wall of the first mounting plate (7) facing the second mounting plate (10). A sliding seat (1402) is slidably connected inside the limiting seat (1401). 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 with a first sleeve (1403). The other end of the first sleeve (1403) penetrates through the second mounting plate (10) and is slidably connected with it.

4. An automatic bending and assembling jig for the carbon brush holder torsion spring according to claim 3, characterized in that: A rotating shaft (1404) is rotatably and slidably connected inside the first sleeve (1403). The other end of the rotating shaft (1404) penetrates through the third mounting plate (12) and is rotatably connected with it. A rotating groove (1407) is opened on the side wall of the connection part of the rotating shaft (1404) and the third mounting plate (12). A snap ring (1408) is sleeved outside the rotating groove (1407). A chute (1405) is opened on the side wall of the first sleeve (1403). The chute (1405) is arranged in a spiral shape. A pin (1406) is fixedly connected to the side wall of the end of the rotating shaft (1404) connected with the first sleeve (1403). The pin (1406) is slidably connected with the chute (1405).

5. The automatic bending and assembling fixture for the carbon brush holder torsion spring according to claim 1, characterized in that: 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), a pair of sliding rods (1502) are vertically and fixedly connected to a side wall of the movable seat (1501) away from the second cylinder (9), the other ends of the sliding rods (1502) penetrate through the second mounting plate (10) and are slidably connected thereto, and the other ends of the sliding rods (1502) are fixedly connected to a movable plate (1503).

6. The automatic bending and assembling fixture for the carbon brush holder torsion spring according to claim 5, characterized in that: A second sleeve (1504) is vertically and fixedly connected to a side wall of the movable plate (1503) away from the sliding 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 other end of the outer sleeve (1506) penetrates through the third mounting plate (12), the outer sleeve (1506) and the connecting plate (13) are fixedly connected 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 outside the second sleeve (1504).

7. An automatic bending and assembling fixture for a carbon brush holder torsion spring, characterized in that: The linkage mechanism includes a first gear (16), the first gear (16) is fixedly connected to the outside of one end of the rotating shaft (1404) away from the second mounting plate (10), a second gear (17) is rotatably connected to the outside of one side of the outer sleeve (1506) away from the movable plate (1503), and the first gear (16) is meshed with the second gear (17).

8. An automatic bending and assembling fixture for a carbon brush holder torsion spring, characterized in that: A mounting ring (18) is fixedly connected to a side wall of the second gear (17) away from the third mounting plate (12), the mounting ring (18) and the second gear (17) are coaxially arranged with the second sleeve (1504), a mounting groove (19) is formed in a side wall of the mounting ring (18) away from the second gear (17), a shift lever (21) is arranged inside the mounting groove (19), a plurality of threaded holes (20) are formed in a side wall of the mounting ring (18) facing the mounting groove (19), the shift lever (21) and the mounting groove (19) are detachably connected by a bolt assembly, a fixing block (1508) is fixedly connected to the outside of one end of the outer sleeve (1506) away from the movable plate (1503), a limiting rod (22) is fixedly connected to a side wall of the fixing block (1508), and the shift lever (21) and the limiting rod (22) are both arranged parallel to the axis of the second sleeve (1504).

9. The automatic bending and assembling fixture for the carbon brush holder torsion spring according to claim 6, characterized in that: The limiting mechanism (6) includes a top block (601), a mounting pin (602) is fixedly connected to a side wall of the top block (601), a clamping block (603) and a limiting groove (605) are respectively arranged on two sides of the mounting pin (602), a clamping groove (604) is formed in a side wall of the clamping block (603), and the diameter of the mounting pin (602) is smaller than the inner diameter of the second sleeve (1504).

10. A carbon brush holder torsion spring automatic bending and assembling fixture according to claim 8, characterized in that: Mounting holes (5) are formed in the surface of the first cover plate (2), the mounting ring (18) extends to the outside of the mounting holes (5), and a lifting ring (4) is fixedly connected to an edge of the outer side wall of the second cover plate (3).

Images