Automatic assembly device for moving contacts of circuit breakers

Abstract

This utility model discloses an automatic assembly device for the moving contacts of a circuit breaker, including a frame. The frame is equipped with a conveying assembly for transporting the moving contact housing. A supporting assembly for carrying the moving contact housing is located on one side of the conveying assembly. Above the supporting assembly and the conveying assembly is a transfer assembly for clamping and transferring the moving contact housing. The supporting assembly also has a driving assembly for driving the moving contact housing to rotate. A feeding assembly for feeding the contact bridge is located on one side of the supporting assembly. A pushing assembly for pushing the contact bridge into the moving contact housing is located on one side of the feeding assembly. The advantages of this utility model are mainly reflected in its ingenious design. The device has a compact structure and reasonable layout, realizing fully automatic feeding, sorting, and assembly of the moving contact housing and contact bridge. The entire process is automated, reducing labor intensity, improving work efficiency, and has wide applicability.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and more specifically, to an automatic assembly device for the moving contacts of a circuit breaker. Background Technology

[0002] A molded case circuit breaker consists of moving contacts, fixed contacts, an arc-extinguishing chamber, a trip unit, and an operating mechanism. The contact system is an important component of a molded case circuit breaker, and double-break molded case circuit breakers represent one of the development directions for molded case circuit breaker products.

[0003] When a large current passes through a double-break molded case circuit breaker, the resulting huge electrodynamic repulsion force can push and rotate the double-break moving contact, thereby generating two electric arcs. The energy generated when the circuit breaker breaks is borne by the two pairs of contacts, and the two arc-extinguishing chambers extinguish the electric arcs, which can effectively improve the breaking capacity of the molded case circuit breaker.

[0004] In existing products, the contact system typically includes a moving contact housing and a contact bridge. The contact bridge is inserted into the contact housing in a certain order. In the industry, manual insertion is usually used, which is time-consuming, labor-intensive, and requires a lot of work.

[0005] For example, according to patent announcement number CN205996515U, an automated contact assembly device includes an indexing plate and a fixing device disposed on the indexing plate for fixing contact supports. The indexing plate is correspondingly provided around its perimeter with a contact support clamping device for installing the contact support into the fixing device, a contact support feeding device for feeding the contact support clamping device, a spring assembly device for assembling springs into cavities along spring assembly holes in the contact support, a spring feeding device for feeding the spring assembly device, and a contact bridge assembly device for installing contact bridges into the contact support, and a contact bridge feeding device for feeding the contact bridge assembly device. This device can accurately assemble the contact bridge and spring with the contact support, improving contact assembly efficiency. However, this device has a complex structure, an unreasonable layout, and occupies a large space. Moreover, due to the difference in the front and back structures of the contact bridge, the device cannot adjust its position in a timely manner during assembly, greatly affecting the yield rate. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic assembly device for the moving contacts of a circuit breaker.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] An automatic assembly device for moving contacts of a circuit breaker includes a frame, on which a conveying assembly for conveying a moving contact housing is provided. A supporting assembly for carrying the moving contact housing is provided on one side of the conveying assembly. A transfer assembly for clamping and transferring the moving contact housing is provided above the supporting assembly and the conveying assembly. A driving assembly for driving the moving contact housing to rotate is also provided on the supporting assembly. A feeding assembly for feeding the contact bridge is provided on one side of the supporting assembly, and a pushing assembly for pushing the contact bridge into the moving contact housing is provided on one side of the feeding assembly.

[0009] Preferably, the conveying assembly includes at least a support plate fixed on the frame, a guide rail fixed on the support plate, a guide block adapted to the guide rail, a guide plate fixed on the guide block, a positioning block fixed on the guide plate, and a positioning groove formed on the positioning block that is adapted to the outer contour of the moving contact housing. The positioning grooves on two adjacent positioning blocks cooperate with each other to position the moving contact housing.

[0010] Preferably, the conveying assembly further includes a telescopic cylinder fixed on the frame, the cylinder shaft of the telescopic cylinder being fixedly connected to the guide plate; a mounting plate is fixed on the guide plate, and a CCD camera is mounted on the mounting plate, the CCD camera being located between adjacent positioning blocks.

[0011] Preferably, a sorting box is also fixed on the frame, the sorting box is located outside the support plate, and it is located between any adjacent positioning blocks.

[0012] Preferably, the bearing assembly includes a bearing block fixed on the frame, the bearing block having a receiving cavity, the receiving cavity having a carrier seat, and the carrier seat having a receiving groove adapted to the outer contour of the moving contact housing.

[0013] Preferably, the drive assembly includes a drive cylinder fixed on the frame, a support fixed on the cylinder shaft of the drive cylinder, a rotary cylinder fixed on the support, and the carrier fixed on the cylinder shaft of the rotary cylinder.

[0014] Preferably, the feeding assembly includes an upper lifting cylinder fixed on the frame, an upper lifting block fixed on the cylinder shaft of the upper lifting cylinder, a circular rotating block pivotally mounted on the upper lifting block, and a locking block fixed on one side of the upper lifting block. The locking block, the upper lifting block, and the rotating block are all provided with locking grooves that are adapted to the outer contour of the contact bridge at their centers. The frame also has a feeding cylinder fixed on it, a rack fixed on the cylinder shaft of the feeding cylinder, and serrations on the outer circumferential surface of the rotating block, which mesh with the rack.

[0015] Preferably, the pushing component includes at least a pushing cylinder fixed on the frame and located on one side of the support block, the cylinder shaft of the pushing cylinder is fixed with a connecting plate, the connecting plate is fixed with a pushing plate, and the support block is provided with a push-pull groove adapted to the pushing plate.

[0016] Preferably, the transfer assembly includes a gantry frame disposed on the outside of the frame, an electric cylinder is fixedly mounted on the crossbeam of the gantry frame, a transfer plate is fixedly mounted on the output end of the electric cylinder, a horizontally mounted transfer cylinder is fixedly mounted on the transfer plate, a transfer block is fixedly mounted on the cylinder shaft of the transfer cylinder, a vertically mounted push-pull cylinder is fixedly mounted on the transfer block, a clamping plate is fixedly mounted on the cylinder shaft of the push-pull cylinder, and a clamping cylinder for clamping the moving contact housing is fixedly mounted on the clamping plate.

[0017] The beneficial effects of this utility model are mainly reflected in:

[0018] 1. The device is ingeniously designed with a compact structure and reasonable layout. It realizes fully automatic feeding, sorting and assembly of moving contact housings and contact bridges. The entire process is automated and requires no manual operation, which reduces labor intensity, improves work efficiency and has a wide range of applicability.

[0019] 2. When the inspection component detects that the front orientation of the contact bridge is incorrect, the feeding cylinder drives the rack to move upward, thereby driving the saw teeth to rotate 180°, thus correcting the front orientation of the contact bridge and ensuring a high yield rate in assembly. Furthermore, this adjustment structure is simple, stable, and reliable, while also reducing space requirements and facilitating a more rational layout.

[0020] 3. A CCD camera performs visual inspection on the moving contact housing. If it is a good product, it is transferred to the carrier assembly. If it is a bad product, it is transferred to the sorting box. This structure realizes fully automatic sorting of moving contact housings, with fully automated operation, which greatly improves work efficiency and yield, reduces labor intensity, and is suitable for mass production.

[0021] 4. The upper cylinder is activated, driving the upper block to move upward so that the slot on the clamping block and the push-pull groove on the support block are at the same height, enabling the contact bridge to move smoothly between the push-pull groove and the clamping slot. After the work is completed, the upper cylinder retracts, allowing the feeding vibratory plate to transport the contact bridge into the slot on the clamping block, avoiding interference with the push plate on the pushing assembly and extending its service life. Attached Figure Description

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0023] Figure 1 : A perspective view of a preferred embodiment of the present invention;

[0024] Figure 2: A perspective view of the conveying component in a preferred embodiment of this utility model;

[0025] Figure 3 : A perspective view of the carrier component, drive component, feeding component and pushing component in the preferred embodiment of this utility model. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 3As shown, this utility model discloses an automatic assembly device for the moving contact of a circuit breaker, including a frame 1. The frame 1 is provided with a conveying assembly 2 for conveying the moving contact housing 100. The conveying assembly 2 includes at least a support plate 21 fixed on the frame 1. A guide rail 22 is fixed on the support plate 21. A guide block 23 adapted to the guide rail 22 is provided on the guide rail 22. A guide plate 24 is fixed on the guide block 23. A positioning block 25 is fixed on the guide plate 24. A positioning groove 26 adapted to the outer contour of the moving contact housing 100 is opened on the positioning block 25. The positioning grooves 26 on two adjacent positioning blocks 25 cooperate with each other to position the moving contact housing 100. The conveying assembly 2 also includes a telescopic cylinder 27 fixed on the frame 1, the cylinder shaft of the telescopic cylinder 27 being fixedly connected to the guide plate 24; a mounting plate 28 is fixed on the guide plate 24, and a CCD camera 29 is mounted on the mounting plate 28, the CCD camera 29 being located between adjacent positioning blocks 25.

[0031] Furthermore, a sorting box 20 is fixed on the frame 1, and a receiving box for receiving non-defective moving contact housing 100 is provided below the sorting box 20. The sorting box 20 is located outside the support plate 21 and is located between any adjacent positioning blocks 25.

[0032] In this application, a robotic arm or other process transfers the moving contact housing 100 into the positioning groove 26 formed by the adjacent positioning blocks 25. A CCD camera 29 performs visual inspection. If it is a good product, the transfer assembly 4 transfers it onto the carrier assembly 3. If it is a bad product, the telescopic cylinder 27 is activated, pulling the guide plate 24 to move and transfer the bad moving contact housing 100 to the sorting box 20, where the transfer assembly 3 clamps it into the sorting box 20. This ingenious design, with the conveying assembly and transfer assembly 4 compatible, achieves fully automated sorting of the moving contact housing 100. The fully automated operation greatly improves work efficiency and yield, reduces workload, and is suitable for mass production.

[0033] In this application, a support assembly 3 for supporting the moving contact housing 100 is provided on one side of the conveying assembly 2. The support assembly 3 includes a support block 31 fixed on the frame 1. The support block 31 has a receiving cavity 32, and a carrier (not shown in the figure) is built into the receiving cavity 32. The carrier has a receiving groove adapted to the outer contour of the moving contact housing 100. In this application, the bottom of the moving contact housing 100 is engaged in the receiving groove, allowing it to rotate synchronously with the carrier. A drive assembly 5 for driving the carrier to rotate is provided below the carrier. Specifically, the drive assembly 5 includes a drive cylinder 51 fixed on the frame 1. A support 52 is fixed on the cylinder shaft of the drive cylinder 51. A rotary cylinder 53 is fixed on the support 52. The carrier is fixed on the cylinder shaft of the rotary cylinder 53. The above design is ingenious. By extending the drive cylinder 51, the support 52, rotary cylinder 52, and carrier move upwards, positioning the carrier above the support block 31. The rotary cylinder 52 then activates, rotating the carrier by a certain angle. Finally, the drive cylinder retracts, causing the carrier to return to its initial position. This operation is simple, convenient, stable, and reliable, greatly improving work efficiency.

[0034] In addition, a transfer assembly 4 for clamping and transferring the moving contact housing 100 is provided above the bearing assembly 3 and the conveying assembly 2. The transfer assembly 4 includes a gantry frame 41 disposed on the outside of the frame 1. An electric cylinder 42 is fixed on the crossbeam of the gantry frame 41. A transfer plate 43 is fixed on the output end of the electric cylinder 42. A horizontally arranged transfer cylinder is fixed on the transfer plate 43. A transfer block is fixed on the cylinder shaft of the transfer cylinder. A vertically arranged push-pull cylinder is fixed on the transfer block. A clamping plate 44 is fixed on the cylinder shaft of the push-pull cylinder. A clamping cylinder 45 for clamping the moving contact housing 100 is fixed on the clamping plate 44. The electric cylinder 42, the transfer cylinder, and the push-pull cylinder cooperate to realize the movement of the clamping cylinder 45 along the X, Y, and Z axes, greatly improving work efficiency. Of course, the above is a preferred embodiment of the present utility model. The transfer component 4 may also be other structures, all of which fall within the protection scope of the present utility model and will not be elaborated further here.

[0035] One side of the bearing component 3 is provided with a feeding component 6 for feeding the material using the contact bridge 200 described below. The feeding component 6 includes an upper lifting cylinder 61 fixed on the frame 1. An upper lifting block 62 is fixed on the cylinder shaft of the upper lifting cylinder 61. A circular rotating block 63 is pivotally provided on the upper lifting block 62. A locking block 65 is also fixed on one side of the upper lifting block 62. The locking block 65, the upper lifting block 62, and the rotating block 63 are all provided with a locking groove 66 that matches the outer contour of the contact bridge 200. A feeding cylinder 67 is also fixed on the frame 1. A rack 68 is fixed on the cylinder shaft of the feeding cylinder 67. The outer circumferential surface of the rotating block 63 has serrations 69, which mesh with the rack 68. In this component, the upper cylinder 61 is activated, driving the upper block 62 to move upward, so that the slot 66 on the locking block 65 and the push-pull groove 74 on the supporting block 31 are at the same height, enabling the touch bridge 200 to move smoothly between the push-pull groove 74 and the slot 66. Furthermore, due to the structural differences between the front and back sides of the touch bridge 200, when the detection element detects that the front orientation of the touch bridge 200 is incorrect, the feeding cylinder 67 drives the rack 68 to move upward, thereby driving the saw teeth 69 to rotate 180°, thus ensuring the correct front orientation of the touch bridge 200 and guaranteeing the accuracy of the installation position. Further, the detection element can be a CCD camera, or other visual inspection instruments or sensors, all of which fall within the protection scope of this utility model.

[0036] The feeding assembly 6 has a pushing assembly 7 on one side for pushing the contact bridge 200 into the moving contact housing 100. The pushing assembly 7 includes at least a pushing cylinder 71 fixed on the frame 1 and located on one side of the support block 31. The cylinder shaft of the pushing cylinder 71 is fixed with a connecting plate 72, and a pushing plate 73 is fixed on the connecting plate 72. The support block 31 has a push-pull groove 74 adapted to the pushing plate 73.

[0037] The working process of this utility model is briefly described below:

[0038] The moving contact housing 100 is transferred to the positioning groove 26 formed by the adjacent positioning block 25 by a robotic arm or other process. A CCD camera 29 performs visual inspection. If it is a good product, the transfer assembly 4 transfers it to the carrier assembly 3. If it is a bad product, the telescopic cylinder 27 is activated, pulling the guide plate 24 to move and transfer the bad moving contact housing 100 to the sorting box 20. The transfer assembly 3 then clamps it into the sorting box 20.

[0039] When the transfer assembly 4 is activated, it clamps the good quality moving contact housing 100 into the receiving groove of the carrier. At this time, the upper cylinder 61 is activated, driving the upper block 62 to move upward so that the slot 66 on the locking block 65 is at the same height as the push-pull groove 74 on the bearing block 31. At this time, the push-pull cylinder is activated, and the push plate 73 pushes the contact bridge 200 in the push-pull groove 74 through the slot 66 into the moving contact housing 100.

[0040] After the above process is completed, the drive cylinder 51 extends, driving the support 52, the rotary cylinder 52 and the carrier to move upward, so that the carrier is above the support block 31. The rotary cylinder 52 starts, driving the rotating carrier to rotate a certain angle. Then the drive cylinder retracts, driving the carrier back to the initial position. The assembly steps of the touch bridge 200 are repeated until all installations are completed.

[0041] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0042] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic assembly device for the moving contacts of a circuit breaker, comprising a frame (1), characterized in that: The frame (1) is provided with a conveying assembly (2) for conveying the moving contact housing (100). On one side of the conveying assembly (2) is a bearing assembly (3) for carrying the moving contact housing (100). Above the bearing assembly (3) and the conveying assembly (2) is a transfer assembly (4) for clamping and transferring the moving contact housing (100). The bearing assembly (3) is also provided with a driving assembly (5) for driving the moving contact housing (100) to rotate. On one side of the bearing assembly (3) is a feeding assembly (6) for feeding the contact bridge (200). On one side of the feeding assembly (6) is a pushing assembly (7) for pushing the contact bridge (200) into the moving contact housing (100).

2. The automatic assembly device for the moving contact of a circuit breaker according to claim 1, characterized in that: The conveying assembly (2) includes at least a support plate (21) fixed on the frame (1), a guide rail (22) fixed on the support plate (21), a guide block (23) adapted to the guide rail (22), a guide plate (24) fixed on the guide block (23), a positioning block (25) fixed on the guide plate (24), and a positioning groove (26) adapted to the outer contour of the moving contact housing (100) on the positioning block (25). The positioning grooves (26) on two adjacent positioning blocks (25) cooperate with each other to position the moving contact housing (100).

3. The automatic assembly device for the moving contact of a circuit breaker according to claim 2, characterized in that: The conveying assembly (2) further includes a telescopic cylinder (27) fixed on the frame (1), the cylinder shaft of the telescopic cylinder (27) being fixedly connected to the guide plate (24); a mounting plate (28) is fixedly mounted on the guide plate (24), and a CCD camera (29) is mounted on the mounting plate (28), the CCD camera (29) being located between adjacent positioning blocks (25).

4. The automatic assembly device for the moving contact of a circuit breaker according to claim 2, characterized in that: A sorting box (20) is also fixed on the frame (1), the sorting box (20) is located outside the support plate (21), and it is located between any adjacent positioning blocks (25).

5. The automatic assembly device for the moving contact of a circuit breaker according to claim 1, characterized in that: The bearing assembly (3) includes a bearing block (31) fixed on the frame (1), the bearing block (31) has a receiving cavity (32), the receiving cavity (32) has a seat inside, and the seat has a receiving groove adapted to the outer contour of the moving contact housing (100).

6. The automatic assembly device for the moving contact of a circuit breaker according to claim 5, characterized in that: The drive assembly (5) includes a drive cylinder (51) fixed on the frame (1), a support (52) fixed on the cylinder shaft of the drive cylinder (51), a rotary cylinder (53) fixed on the support (52), and a carrier fixed on the cylinder shaft of the rotary cylinder (53).

7. The automatic assembly device for the moving contact of a circuit breaker according to claim 6, characterized in that: The feeding assembly (6) includes an upper cylinder (61) fixed on the frame (1), an upper block (62) fixed on the cylinder shaft of the upper cylinder (61), a circular rotating block (63) pivotally mounted on the upper block (62), a locking block (65) fixed on one side of the upper block (62), and a locking groove (66) adapted to the outer contour of the contact bridge (200) at the center of the locking block (65), the upper block (62) and the rotating block (63); a feeding cylinder (67) is also fixed on the frame (1), a rack (68) fixed on the cylinder shaft of the feeding cylinder (67), and serrations (69) on the outer circumference of the rotating block (63), the serrations (69) meshing with the rack (68).

8. The automatic assembly device for the moving contact of a circuit breaker according to claim 7, characterized in that: The pushing component (7) includes at least a pushing cylinder (71) fixed on the frame (1) and located on one side of the support block (31). The cylinder shaft of the pushing cylinder (71) is fixed with a connecting plate (72), and a pushing plate (73) is fixed on the connecting plate (72). The support block (31) is provided with a push-pull groove (74) that is adapted to the pushing plate (73).

9. The automatic assembly device for the moving contact of a circuit breaker according to claim 7, characterized in that: The transfer assembly (4) includes a gantry (41) disposed on the outside of the frame (1). An electric cylinder (42) is fixed on the crossbeam of the gantry (41). A transfer plate (43) is fixed on the output end of the electric cylinder (42). A horizontally disposed transfer cylinder is fixed on the transfer plate (43). A transfer block is fixed on the cylinder shaft of the transfer cylinder. A vertically disposed push-pull cylinder is fixed on the transfer block. A clamping plate (44) is fixed on the cylinder shaft of the push-pull cylinder. A clamping cylinder (45) for clamping the moving contact housing (100) is fixed on the clamping plate (44).

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