Assembly equipment for circuit breaker locking device

Abstract

The present invention belongs to the technical field of circuit breaker assembly machines, and specifically relates to an assembly device for a circuit breaker locking device. The locking device assembly device provided by the present invention is provided with a first gripper for grabbing a trigger machine head and a second gripper for grabbing a wiring contact and a thermal component. When assembling the locking device, the first gripper and the second gripper are used to transfer the locking device to the upper side of a lower shell. Due to the complex structure of the trigger machine head, the space corresponding to the first installation position in the lower shell is limited, and the thermal component has a certain elasticity. Once the thermal component and the wiring contact are installed first, the trigger machine head cannot be installed. Therefore, during installation, the order in which the first gripper and the second gripper descend is controlled to achieve the installation of the trigger machine head first and then the wiring contact and the thermal component, thereby realizing automatic assembly of the locking device, improving assembly efficiency and quality, and ensuring the qualified rate of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breaker assembly machines, and in particular relates to assembly equipment for a circuit breaker locking device. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers generally include: Figure 1 The lower shell 01, locking device 02, first spring 03, second spring 04, arc extinguishing device 05, and electromagnetic release 06 shown in the figure need to be installed in a specific posture during assembly. It is currently difficult to assemble them using automated equipment. Among them, since the locking device has a relatively complex structure, it includes a trigger head, wiring contacts and thermal components connected together, and there is a certain sequence during installation, otherwise it will interfere with the installation position in the lower shell and cannot be installed. Therefore, the existing locking device is usually assembled manually. This assembly method not only consumes manpower and material resources, but also has low efficiency, and has the defects of unstable assembly quality and high cost, and cannot meet the production needs of enterprises. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art in which a circuit breaker locking device is manually assembled, and to provide an assembly device that can realize automatic assembly of the locking device.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A circuit breaker locking device assembly device, the locking device involved includes a trigger machine head, a thermal component connected to the trigger machine head, and a wiring contact connected to the thermal component. The assembly device includes a material table for storing the locking device, a material channel for conveying the circuit breaker lower shell, and a transfer device for assembling the locking device in the lower shell. The transfer device includes a first gripper and a second gripper that can be raised and lowered. The lower shell is provided with a first mounting position, a second mounting position, and a third mounting position corresponding to the trigger machine head, the wiring contact, and the thermal component, respectively. When assembling the locking device, the first gripper clamps the trigger machine head, and the second gripper clamps the wiring contact and the thermal component to transfer the locking device to the top of the lower shell. Subsequently, the first gripper descends to assemble the trigger machine head to the first mounting position, and then the second gripper descends to assemble the wiring contact and the thermal component to the second mounting position and the third mounting position, respectively.

[0006] Compared with the prior art, the locking device assembly equipment provided by the present invention is provided with a first gripper for grasping the trigger machine head and a second gripper for grasping the wiring contacts and the thermal component. When assembling the locking device, the first gripper and the second gripper are used to transfer the locking device to the upper side of the lower shell. Due to the complex structure of the trigger machine head, the space corresponding to the first installation position in the lower shell is limited, and the thermal component has a certain elasticity. Once the thermal component and the wiring contacts are installed first, the trigger machine head cannot be installed. Therefore, during installation, the order in which the first gripper and the second gripper descend is controlled to achieve the installation of the trigger machine head first and then the wiring contacts and the thermal component, thereby realizing the automated assembly of the locking device, improving the efficiency and quality of assembly, and ensuring the qualified rate of the product.

[0007] Furthermore, the first gripper includes a first lifting cylinder and a first claw connected to the output end of the first lifting cylinder. The first claw can be controlled to open or close to clamp the trigger machine head, and the first lifting cylinder drives the first claw to achieve lifting.

[0008] Furthermore, the first clamping claw includes a first clamping arm and a second clamping arm clamped on the outer side surface of the trigger machine head, and the first gripper also includes a limit assembly, which includes a limit column arranged between the first clamping arm and the second clamping arm and used to press downward on the upper end surface of the trigger machine head, and a limit hole is provided at the lower end of the limit column to cooperate with the pin shaft on the upper end surface of the trigger machine head. Since the locking device is not fixed on the material table, when the transfer device grasps the locking device, the locking device is easy to slide and the position is shifted, thereby causing the transfer device to be unable to accurately grasp the locking device. Therefore, a limit column is arranged between the first clamping arm and the second clamping arm, so that before the first clamping claw clamps the trigger machine head, the limit column is first pressed against the upper end surface of the trigger machine head to firmly press the trigger machine head on the material table to prevent the trigger machine head from shifting when the first clamping claw clamps the trigger machine head subsequently, thereby improving the grasping accuracy.

[0009] Furthermore, in order to further improve the limiting effect of the limiting column on the trigger machine head, two limiting columns are provided, and the two limiting columns are pressed against the diagonal positions of the upper end surface of the trigger machine head.

[0010] Furthermore, the limit stop assembly also includes a limit stop arm arranged on the side of the first gripper close to the second gripper, the limit stop arm having a preset swing amplitude in the direction from the first gripper to the second gripper, and the limit stop arm is used to resist the outer side surface of the trigger head close to the second gripper when the first gripper clamps the trigger head. By setting the limit stop arm, the rotational freedom of the trigger head parallel to the material table placement surface can be further limited to prevent the trigger head from rotating when being clamped. In addition, the setting method of the limit stop arm having a preset swing amplitude can be adaptively fine-tuned when clamping the trigger head to avoid direct collision with the trigger head and damage to the trigger head.

[0011] Furthermore, the bottom end of the limit stop arm is located on the side close to the trigger head and is provided with a guide surface inclined downward. The guide surface can further improve the adaptive adjustment ability of the limit stop arm. When the transfer device descends to prepare to grab the trigger head, the limit stop arm will first contact the outer edge of the trigger head as it descends. By setting the guide surface, when the guide surface contacts the trigger head, the limit stop arm will be driven to swing adaptively outward along the outer edge of the trigger head, thereby performing adaptive fine-tuning, avoiding direct interference with the trigger head and affecting subsequent clamping operations, as well as avoiding crushing the trigger head.

[0012] Furthermore, the limit assembly also includes a bracket, the bracket includes a vertical arm and a horizontal arm, the upper end of the vertical arm is relatively fixedly connected to the output end of the first lifting cylinder, the horizontal arm is fixedly connected to the lower end of the vertical arm, the positioning column is arranged at the head end of the horizontal arm, and the connection between the end of the horizontal arm and the vertical arm is recessed inward to form an installation recess, the limit stop arm includes a connecting portion and a blocking portion extending downward, the connecting portion is installed in the installation recess, and its side walls are respectively provided with gaps between the horizontal arm and the vertical arm, a waist-shaped hole is opened in the connecting portion, and the installation recess is provided with a plurality of laterally arranged connecting holes at intervals corresponding to the waist-shaped holes, and a screw connected to one of the connecting holes is penetrated through the waist-shaped hole, and the installation method of the above-mentioned limit stop arm can form an integral structure with the bracket as much as possible, so as to better save its installation space, and at the same time, the connecting portion is arranged in the installation recess, and the connecting portion can be limited by the horizontal arm and the vertical arm to limit its swing amplitude, and the waist-shaped hole and a plurality of connecting holes are provided so that the operator can select a suitable connecting hole according to the actual size of the trigger head, thereby increasing the specifications of the transfer device that can be used to transfer the locking device.

[0013] Furthermore, the second gripper includes a second lifting cylinder, a second claw and a third claw connected to the output end of the second lifting cylinder, the second claw and the third claw can be controlled to open or close to clamp the wiring contacts and the thermal component, and the second lifting cylinder drives the second claw and the third claw to achieve lifting.

[0014] Furthermore, the second gripper also includes a third lifting cylinder connected to the output end of the second lifting cylinder, and a pressure block connected to the output end of the third lifting cylinder. The pressure block can be controlled to descend to press the thermal component. Since the locking device is assembled by first installing the trigger head and then installing the thermal component, and the third mounting position is tightly matched with the thermal component, it is difficult to completely install the thermal component into the third mounting position only by the third claw. Therefore, a liftable pressure block is provided so that the thermal component can be pressed after the third claw completes the placement of the thermal component, so that the thermal component can be further installed into the third mounting position to ensure that it is firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the circuit breaker;

[0016] Figure 2 It is a schematic diagram of the structure of the assembly equipment;

[0017] Figure 3 It is a structural schematic diagram of the first gripper and the second gripper grabbing the locking device and placing it into the lower shell;

[0018] Figure 4 A top view of the first clamp arm, the second clamp arm, the limit assembly and the trigger head;

[0019] Figure 5 This is a diagram showing the coordination between the limit assembly and the trigger head;

[0020] Figure 6 It is a schematic diagram of the structure of the limit assembly and the trigger head;

[0021] Figure 7 It is a structural schematic diagram of the limit stop arm;

[0022] Figure 8 It is a structural schematic diagram of the first gripper and the second gripper grabbing the locking device and placing it into the lower shell;

[0023] Fig. 9 It is a structural schematic diagram when the first gripper and the second gripper grasp the locking device and put it into the lower shell. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "head end", "end end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] See also Figure 1The components of the circuit breaker involved in the present invention include an upper shell 01, a lower shell 02, a locking device 03, a first spring 04, a second spring 05, an arc extinguisher 06 and an electromagnetic release 07. The lower shell 02 is provided with component installation positions corresponding to the above components. When assembling the circuit breaker, the locking device 03, the first spring 04, the second spring 05, the electromagnetic release 07 and the arc extinguisher 06 are sequentially assembled in the corresponding installation positions of the lower shell 02, and finally the upper shell 01 is covered on the lower shell 02. This embodiment provides a method for realizing the above locking device 02 automatically The assembly equipment is automatically assembled on the lower shell 02, the locking device 03 includes a trigger head 031, a wiring contact 032 and a thermal component 033, the trigger head 031 is connected to the thermal component 033, and the thermal component 033 is connected to the wiring contact 032, wherein the trigger head 031 has a smooth outer side surface, and the thermal component 033 is an elastic copper sheet, and the lower shell is provided with a first mounting position 021, a second mounting position 022 and a third mounting position 023 corresponding to the trigger head 031, the wiring contact 032 and the thermal component 033 respectively.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9 The assembly equipment includes a material table 100 for storing the locking device 03, a material channel 200 for conveying the lower shell 02, and a transfer device 300 for assembling the locking device 03 in the lower shell 02. The locking device 03 on the material table 100 has been placed in a preset posture. The transfer device 300 includes a first gripper 1 and a second gripper 2 that can be raised and lowered. A plurality of fixtures 400 are provided on the material channel 200, and each fixture 400 is pre-installed with the lower shell 02. During assembly, the material channel 200 conveys the fixtures 400 to the transfer device 300 in turn, thereby transporting the lower shell 02 to the side of the transfer device 300, so that the transfer device 300 can assemble the locking device 03 in the lower shell 02. When assembling the locking device 03, the first gripper 1 clamps the trigger head 031, and the second gripper 2 clamps the wiring contact 032 and the thermal component 033 to transfer the locking device 03 to the top of the lower shell 02. Then the first gripper 1 descends to assemble the trigger head 031 to the first mounting position 021, and then the second gripper 2 descends to assemble the wiring contact 032 and the thermal component 033 to the second mounting position 022 and the third mounting position 023 respectively.

[0027] See also Figure 3 The first gripper 1 includes a first lifting cylinder 11, a first claw 12 connected to the output end of the first lifting cylinder 11, and a limit assembly 13. The first claw 12 can be controlled to open or close to clamp the outer side of the trigger head 031. The first lifting cylinder 11 drives the first claw 12 to move up and down. In a specific embodiment, the first claw 12 can be driven by the cylinder to open and close.

[0028] See also Figures 3 to 6 The first clamping claw 12 includes a first clamping arm 121 and a second clamping arm 122 clamped on the outer side of the trigger head 031. The limiting assembly 13 includes a limiting column 131 disposed between the first clamping arm 121 and the second clamping arm 122 for pressing the upper end surface of the trigger head 031 downward. It should be noted that the trigger head 031 of the present invention has a protruding pin shaft 034 on its upper end surface, and a limiting hole 1311 cooperating with the pin shaft 034 is formed at the lower end of the limiting column 131. Since the locking device 03 is not fixed on the material platform 100, that is, the locking device 03 can move relative to the material platform 100, If only the first clamping claw 12 is provided, the locking device 03 is likely to slide and deviate when grasping the locking device 03, causing the transfer device 300 to be unable to grasp the locking device 03 accurately. Therefore, a limiting column 131 is provided between the first clamping arm 121 and the second clamping arm 122, so that before the first clamping claw 12 clamps the trigger head 031, the limiting column 131 is first pressed against the upper end surface of the trigger head 031 to firmly press the trigger head 031 onto the material table 100, thereby preventing the first clamping claw 12 from being displaced when clamping the trigger head 031, thereby improving the grasping accuracy.

[0029] See also Figures 3 to 6 As an improved solution, in order to further improve the limiting effect of the limiting column 131 on the trigger head 031, two limiting columns 131 are provided, and the two limiting columns 131 are diagonally distributed, that is, the two limiting columns 131 are pressed against the diagonal positions of the upper end surface of the trigger head 031. The above-mentioned setting method can more effectively limit the rotational freedom of the trigger head 031 parallel to the placement surface of the material table 100.

[0030] See also Figures 3 to 6 As an improved solution, the limit assembly 13 also includes a limit stop arm 132 arranged on the side of the first gripper 1 close to the second gripper 2, the limit stop arm 132 has a preset swing amplitude in the direction from the first gripper 1 to the second gripper 2, and the limit stop arm 132 is used to resist the outer side surface of the trigger head 031 close to the second gripper 2 when the first gripper 1 clamps the trigger head 031. Specifically, the trigger head 031 is located on the side close to the second gripper 2 and is provided with a limit stop arm 132. 2 corresponds to the stopper 0311, and the limit stopper arm 132 is blocked on the stopper 0311. By setting the limit stopper arm 132, the rotational freedom of the trigger head 031 parallel to the placement surface of the material table 100 can be further limited to prevent the trigger head 031 from rotating when being clamped. At the same time, the limit stopper arm 132 has a preset swing amplitude and can be adaptively fine-tuned when the first gripper 1 clamps the trigger head 031, so as to avoid direct collision with the trigger head 031 and damage to the trigger head 031.

[0031] See also Figures 3 to 7As an improved solution, the bottom end of the limit stop arm 132 is located on the side close to the trigger head 031 and is provided with a guide surface 1321 inclined downward. The guide surface 1321 can further improve the adaptive adjustment ability of the limit stop arm 132. When the transfer device 300 descends to prepare to grab the trigger head 031, the limit stop arm 132 will first contact the outer edge of the trigger head 031 as it descends. By setting the guide surface 1321, when the guide surface 1321 contacts the trigger head 031, the limit stop arm 132 will be driven to swing outward along the outer edge of the trigger head 031 adaptively, thereby making adaptive fine-tuning to avoid direct interference with the trigger head 031 and affecting the subsequent clamping operation and avoiding crushing the trigger head 031.

[0032] See also Figures 3 to 7 The first and second locking cams 136 are provided with a plurality of locking cams 134, each of which is provided with a plurality of locking cams 136a and 136b, and a plurality of locking cams 136b are provided on the second locking cams 136b. 6 is provided with a waist-shaped hole 139, and the mounting recess 135 is provided with a plurality of transversely arranged connecting holes 138 at intervals corresponding to the waist-shaped hole 139, and a screw (the screw is not shown in the figure) connected to one of the connecting holes 138 is passed through the waist-shaped hole 139, and the above-mentioned screw can movably assemble the limit stop arm 132 on the mounting recess 135, and the installation method of the above-mentioned limit stop arm 132 can form an integral structure with the bracket 130 as much as possible, so as to better save its installation space. At the same time, the connecting part 136 is arranged in the mounting recess 135, and the connecting part 136 can be limited by the horizontal arm 134 and the vertical arm 133 to limit the swing amplitude thereof, without the need to set a limit structure. In addition, the waist-shaped hole 139 and the plurality of connecting holes 138 are provided so that the operator can select a suitable connecting hole 138 according to the actual size of the trigger head 031, thereby increasing the specifications of the transfer device 300 that can be used to transfer the locking device 03.

[0033] See also Figure 1 , Figure 3 , Figure 8 and Fig. 9The second gripper 2 includes a second lifting cylinder 21, a second claw 22 and a third claw 23 connected to the output end of the second lifting cylinder 21, the second claw 22 and the third claw 23 can be controlled to open or close to clamp the wiring contact 032 and the thermal component 033, the second lifting cylinder 21 drives the second claw 22 and the third claw 23 to achieve lifting, in a specific embodiment, the opening and closing of the second claw 22 and the third claw 23 can be achieved by the cylinder.

[0034] See also Figure 1 , Figure 8 and Fig. 9 The second gripper 2 also includes a third lifting cylinder 24 connected to the output end of the second lifting cylinder 21, and a pressure block 25 connected to the output end of the third lifting cylinder 24. The pressure block 25 can be controlled to descend and press the thermal component 033. Since the locking device 03 is assembled by first installing the trigger head 031 and then installing the thermal component 033, and the third mounting position 023 is tightly matched with the thermal component 033, it is difficult to completely install the thermal component 033 into the third mounting position 023 only by the third claw 23. Therefore, a liftable pressure block 25 is provided so that the thermal component 033 can be pressed after the third claw 23 completes the placement of the thermal component 033, so that the thermal component 033 is further installed into the third mounting position 023 to ensure that it is firmly installed.

[0035] The working principle of the present invention is as follows: the material channel 200 transfers the lower shell 02 to the side of the transfer device 300, and the transfer device 300 clamps the trigger head 031, the wiring contact 032 and the thermal component 033 of the locking device 03 through the first gripper 1 and the second gripper 2. During the clamping process, as the first gripper 1 descends, the limit column 131 first presses against the upper end surface of the trigger head 031, and the limit stop arm 132 presses against the outer side surface of the trigger head 031 on the side close to the second gripper 2, thereby pressing the locking device 03 against the material table 10. 0, so that the locking device 03 will not be offset when the first gripper 1 and the second gripper 2 clamp. After clamping, the transfer device 300 transfers the locking device 03 to the upper side of the lower shell 02, and then the first gripper 1 descends first to place the trigger head 031 into the first installation position 021, and then the second gripper 2 descends to place the wiring contact 032 and the thermal component 033 into the corresponding installation positions, and finally the third lifting cylinder 24 drives the pressing block 25 to descend to further press the thermal component 033 into the third installation position 023, thereby completing the assembly of the locking device 03.

[0036] Compared with the prior art, the locking device 03 assembly equipment provided by the present invention is provided with a first gripper 1 for grasping the trigger head 031 and a second gripper 2 for grasping the wiring contact 032 and the thermal component 033. When assembling the locking device 03, the first gripper 1 and the second gripper 2 are used to transfer the locking device 03 to the upper side of the lower shell 02. Since the trigger head 031 has a complex structure and its corresponding first installation position 021 in the lower shell 02 has limited space, and the thermal component 033 has a certain elasticity, once the thermal component 033 and the wiring contact 032 are installed first, the trigger head 031 cannot be installed. Therefore, during installation, the order in which the first gripper 1 and the second gripper 2 descend is controlled to achieve the installation of the trigger head 031 first and then the wiring contact 032 and the thermal component 033, thereby realizing the automated assembly of the locking device 03, improving the efficiency and quality of assembly, and ensuring the qualified rate of the product.

[0037] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An assembly device for a circuit breaker locking device, the locking device comprising a trigger head, a thermal component connected to the trigger head, and a wiring contact connected to the thermal component, characterized in that: The assembly equipment includes a material table for storing the locking device, a material channel for conveying the lower shell of the circuit breaker, and a transfer device for assembling the locking device in the lower shell, the transfer device includes a first gripper and a second gripper which can be raised and lowered, and the lower shell is provided with a first installation position, a second installation position and a third installation position which correspond to the trigger machine head, the wiring contact and the thermal component respectively. When assembling the locking device, the first gripper clamps the trigger machine head, and the second gripper clamps the wiring contact and the thermal component to transfer the locking device to the top of the lower shell, and then the first gripper descends to assemble the trigger machine head to the first installation position, and then the second gripper descends to assemble the wiring contact and the thermal component to the second installation position and the third installation position respectively.

2. The assembly device according to claim 1, characterized in that: The first gripper includes a first lifting cylinder and a first claw connected to an output end of the first lifting cylinder. The first claw can be controlled to open or close to clamp the trigger machine head. The first lifting cylinder drives the first claw to move up and down.

3. The assembly device according to claim 2, characterized in that: The first clamping claw includes a first clamping arm and a second clamping arm clamped on the outer side surface of the trigger head, and the first gripper also includes a limiting assembly, the limiting assembly includes a limiting column arranged between the first clamping arm and the second clamping arm and used to press downward on the upper end surface of the trigger head, and the lower end of the limiting column is provided with a limiting hole that cooperates with the pin shaft on the upper end surface of the trigger head.

4. The assembly device according to claim 3, characterized in that: There are two limit posts, and the two limit posts press against the diagonal positions of the upper end surface of the trigger head.

5. The assembly device according to claim 3, characterized in that: The limit stop assembly also includes a limit stop arm arranged on the side of the first gripper close to the second gripper, the limit stop arm has a preset swing amplitude in the direction from the first gripper to the second gripper, and the limit stop arm is used to resist the outer side surface of the trigger head close to the second gripper when the first gripper clamps the trigger head.

6. The assembly device according to claim 5, characterized in that: The bottom end of the position-limiting stop arm is located at a side close to the trigger head and is provided with a guide surface inclined downward.

7. The assembly device according to claim 5 or 6, characterized in that: The limit assembly also includes a bracket, which includes a vertical arm and a horizontal arm. The upper end of the vertical arm is relatively fixedly connected to the output end of the first lifting cylinder, and the horizontal arm is fixedly connected to the lower end of the vertical arm. The positioning column is arranged at the head end of the horizontal arm, and the connection between the end of the horizontal arm and the vertical arm is recessed inward to form an installation recess. The limit stop arm includes a connecting part and a blocking part extending downward. The connecting part is installed in the installation recess, and its side walls respectively leave gaps between the horizontal arm and the vertical arm. The connecting part is provided with a waist-shaped hole, and the installation recess is provided with a plurality of laterally arranged connecting holes corresponding to the waist-shaped holes. A screw connected to one of the connecting holes is penetrated through the waist-shaped hole.

8. The assembly device according to claim 1, characterized in that: The second gripper includes a second lifting cylinder, a second claw and a third claw connected to the output end of the second lifting cylinder, the second claw and the third claw can be controlled to open or close to clamp the wiring contact and the thermal component, and the second lifting cylinder drives the second claw and the three claws to achieve lifting.

9. The assembly device according to claim 8, characterized in that: The second gripper further includes a third lifting cylinder connected to the output end of the second lifting cylinder, and a pressing block connected to the output end of the third lifting cylinder, and the pressing block can be controlled to descend and press the thermal component.

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