Rivet dismounting device of circuit breaker

Abstract

The utility model belongs to the field of circuit breakers, and particularly relates to a rivet dismounting device of a circuit breaker, which comprises a mechanism frame and an automatic rivet dismounting mechanism, the automatic rivet dismounting mechanism comprises a cylinder, a slide block assembly, a push plate, a plurality of thimbles, a clamping plate used for clamping a circuit breaker shell, and a positioning guide plate which is arranged on the clamping plate in a sliding manner and is in linkage fit with the push plate, a plurality of guide holes allowing the ejector pins to penetrate through are formed in the positioning guide plate, and a plurality of through holes allowing the ejector pins to penetrate through are formed in the clamping plate. The positioning guide plate can prevent the upper ends of the ejector pins from being bent and broken due to too large resistance, the multiple through holes of the clamping plate play a role in guiding and positioning the multiple ejector pins, thrust of the multiple ejector pins can reliably and accurately act on the multiple rivets, and the phenomenon that the ejector pins are bent is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker technology, specifically relating to a rivet removal device for a circuit breaker. Background Technology

[0002] Miniature circuit breakers, also known as micro circuit breakers, are suitable for overload and short-circuit protection of AC 50 / 60Hz lines with a rated voltage of 230 / 400V and a rated current up to 63A. They can also be used for infrequent switching of circuits under normal conditions. Miniature circuit breakers are mainly used in various places such as industrial, commercial, high-rise, and residential buildings. A miniature circuit breaker consists of a housing, operating mechanism, and contact system. The housing includes a bottom shell and a top shell, which are riveted together by multiple rivets. During the production process, defective products need to be reworked. During rework, multiple rivets between the bottom shell and the top shell need to be removed to replace and repair the internal components of the circuit breaker.

[0003] In existing technologies, most rivets are removed using rivet removal devices. These devices have complex structures and high costs. When removing rivets, the upper ends of the multiple ejector pins lack guiding and positioning mechanisms, so the thrust of the multiple ejector pins cannot be reliably and accurately applied to the multiple rivets. When multiple ejector pins remove multiple rivets, the upper ends of the ejector pins are prone to bending or even breaking, which greatly affects the efficiency of rivet removal. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an AC contactor that can prevent the pin from bending or breaking, thereby effectively improving the efficiency of pin removal.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A rivet removal device for a circuit breaker includes a frame and an automatic rivet removal mechanism mounted on the frame. The automatic rivet removal mechanism includes a cylinder mounted on the frame, a slider assembly slidably mounted on the frame and linked with the piston rod of the cylinder, a push plate linked on the slider assembly, multiple ejector pins linked on the push plate, a clamping plate for clamping the circuit breaker housing, and a positioning guide plate slidably mounted on the clamping plate and linked with the push plate. The positioning guide plate is provided with multiple guide holes through which multiple ejector pins can pass, and the clamping plate is provided with multiple through holes through which multiple ejector pins can pass.

[0006] In some embodiments, the clamping plate is provided with a plurality of guide posts arranged in a rectangular array, and the positioning guide plate is provided with a plurality of sliding holes that cooperate with the plurality of guide posts. The plurality of guide posts are respectively inserted into the plurality of sliding holes, and form a sliding connection between the positioning guide plate and the plurality of guide posts.

[0007] In some embodiments, sliding guide sleeves are respectively provided between the positioning guide plate and the plurality of guide posts.

[0008] In some embodiments, the slider assembly includes a guide rail mounted on a frame and a slider slidably mounted on the guide rail. One end of the slider is connected to a piston rod, and the other end of the slider is connected to a push plate.

[0009] In some embodiments, the piston rod is provided with an adjusting bolt, one end of the slider is provided with a groove that mates with the adjusting bolt, the nut portion of the adjusting bolt is engaged in the groove, and the rod portion of the adjusting bolt is connected to the threaded hole of the piston rod.

[0010] In some embodiments, two support plates are symmetrically arranged on the slider, and two positioning slots are provided on the push plate to cooperate with the two support plates. The limiting parts of the two support plates are respectively engaged in the two positioning slots, and the limiting parts of the two support plates are fixed to the positioning guide plate by fasteners.

[0011] In some embodiments, the base plate of the mechanism frame is provided with a plurality of positioning blocks for positioning the circuit breaker housing, and the clamping plate is provided with a plurality of clamping blocks that cooperate with the plurality of positioning blocks. When the clamping plate moves to the clamping position, a clamping cavity for clamping the circuit breaker housing is formed between the plurality of positioning blocks and the plurality of clamping blocks.

[0012] In some embodiments, clamping guide slopes are provided on the clamping surfaces of the plurality of clamping blocks respectively.

[0013] In some embodiments, the positioning guide plate is provided with a positioning groove that cooperates with the push plate, the push plate is engaged in the positioning groove, and the push plate is provided with a plurality of bolts that are connected to the positioning guide plate.

[0014] The beneficial effects of this utility model are as follows: A positioning guide plate is provided on the push plate to guide and position multiple ejector pins. When multiple ejector pins are disassembled from multiple rivets, the positioning guide plate can prevent the upper end of the ejector pins from bending or breaking due to excessive resistance. In addition, the multiple through holes of the clamping plate guide and position multiple ejector pins. The thrust of multiple ejector pins can be reliably and accurately applied to multiple rivets, avoiding the phenomenon of ejector pin bending. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0018] Figure 3 This is a front view of an embodiment of the present utility model;

[0019] Figure 4 This is a perspective view of the clamping plate in an embodiment of the present utility model. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model 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 this utility model and are not intended to limit this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0022] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0024] like Figure 1 , 2As shown in Figure 3, a rivet removal device for a circuit breaker includes a frame 10 and an automatic rivet removal mechanism 20 mounted on the frame 10. The automatic rivet removal mechanism 20 includes a cylinder 21 mounted on the frame 10, a slider assembly 22 slidably mounted on the frame 20 and linked with the piston rod 211 of the cylinder 21, a push plate 23 linked on the slider assembly 22, a plurality of ejector pins 24 linked on the push plate 23, a clamping plate 25 for clamping the circuit breaker housing, and a positioning guide plate 26 slidably mounted on the clamping plate 25 and linked with the push plate 23. The positioning guide plate 26 is provided with a plurality of guide holes 261 through which the plurality of ejector pins 24 can pass, and the clamping plate 25 is provided with a plurality of through holes 251 through which the plurality of ejector pins 24 can pass. A positioning guide plate is provided on the push plate to guide and position multiple ejector pins. When disassembling multiple rivets, the positioning guide plate prevents the upper ends of the ejector pins from bending or breaking due to excessive resistance. Furthermore, multiple through holes in the clamping plate guide and position the ejector pins, ensuring that the thrust of the ejector pins is reliably and accurately applied to the rivets, preventing pin bending. Multiple guide posts 27 are arranged in a rectangular array on the clamping plate 25. Multiple sliding holes 262 are provided on the positioning guide plate 26 to mate with the guide posts 27. The guide posts 27 are inserted into the sliding holes 262, forming a sliding connection between the positioning guide plate 26 and the guide posts 27. The positioning guide plate slides on the guide posts of the clamping plate, ensuring reliable operation on the clamping plate and improving operational reliability. Sliding guide sleeves 270 are provided between the positioning guide plate 26 and the guide posts 27. These sliding guide sleeves reduce friction and wear, allowing the positioning guide plate to slide reliably on the guide posts, further enhancing operational reliability.

[0025] like Figure 1 and 2As shown, the slider assembly 22 includes a guide rail 221 longitudinally mounted on the frame 10 and a slider 222 slidably mounted on the guide rail 221. One end of the slider 222 is connected to the piston rod 211, and the other end is connected to the push plate 23. The slider assembly adopts a modular structure design, which is more compact, easier to assemble, and ensures that the slider can reliably drive the push plate. An adjusting bolt 28 is provided on the piston rod 211, and a groove 2221 that mates with the adjusting bolt 28 is provided on one end of the slider 222. The nut portion 281 of the adjusting bolt 28 is engaged in the groove 2221, and the rod portion 282 of the adjusting bolt 28 is connected to the threaded hole of the piston rod 211. By rotating the adjusting bolt, the stroke of the piston rod can be adjusted, making operation more convenient. Two support plates 223 are symmetrically arranged on the slider 222. The push plate 23 is provided with two positioning slots 231 that cooperate with the two support plates 223. The limiting parts 2231 of the two support plates 223 are respectively engaged in the two positioning slots 231. The limiting parts 2231 of the two support plates 223 are fixed to the positioning guide plate 26 by fasteners.

[0026] like Figure 3 and 4 As shown, the base plate 101 of the frame 10 is provided with multiple positioning blocks 102 for positioning the circuit breaker housing, and the clamping plate 25 is provided with multiple clamping blocks 252 that cooperate with the positioning blocks 102. When the clamping plate 25 moves to the clamping position, a clamping cavity 250 for clamping the circuit breaker housing is formed between the multiple positioning blocks 102 and the multiple clamping blocks 252. The clamping plate clamps the circuit breaker housing within the multiple positioning blocks of the base plate through the multiple clamping blocks, thereby achieving clamping of the circuit breaker housing by the clamping plate. The clamping surfaces 2521 of the multiple clamping blocks 252 are respectively provided with clamping guide slopes 2522. The clamping guide slopes can guide the circuit breaker housing and accurately clamp the circuit breaker housing.

[0027] like Figure 1 and 2 As shown, the positioning guide plate 26 is provided with a positioning groove 263 that cooperates with the push plate 23. The push plate 23 is engaged in the positioning groove 263, and the push plate 23 is provided with multiple bolts 29 that connect to the positioning guide plate 26. The push plate is engaged in the positioning groove of the positioning guide plate, which facilitates the assembly of the push plate and the positioning guide plate and ensures a tighter connection between the push plate and the positioning guide plate.

[0028] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A rivet unpinning device for a circuit breaker, comprising a mechanism frame, an automatic unpinning mechanism arranged on the mechanism frame, characterized in that: The automatic disassembling mechanism comprises a cylinder arranged on a mechanism frame, a slider assembly slidingly arranged on the mechanism frame and linked with a piston rod of the cylinder, a push plate linked with the slider assembly, a plurality of ejector pins linked with the push plate, a clamping plate for clamping a circuit breaker shell, and a positioning guide plate slidingly arranged on the clamping plate and linked with the push plate.

2. The rivet unpinning device of claim 1, wherein: The clamping plate is provided with a plurality of guide columns arranged in a rectangular array, the positioning guide plate is provided with a plurality of sliding holes matched with the guide columns, and the guide columns are respectively inserted into the sliding holes to form a sliding connection between the positioning guide plate and the guide columns.

3. The rivet unpinning device of claim 2, wherein: A sliding guide sleeve is arranged between the positioning guide plate and the guide columns.

4. The rivet unpinning device of claim 1, wherein: The slider assembly comprises a guide rail arranged on the mechanism frame and a slider slidingly arranged on the guide rail, one end of the slider is connected with the piston rod, and the other end of the slider is connected with the push plate.

5. The rivet unpinning device of claim 4, wherein: The piston rod is provided with an adjusting bolt, one end of the slider is provided with a clamping groove matched with the adjusting bolt, a nut part of the adjusting bolt is clamped in the clamping groove, and a rod part of the adjusting bolt is connected in a threaded hole of the piston rod.

6. The rivet unpinning device of claim 4, wherein: The slider is provided with two support plates symmetrically arranged thereon, the push plate is provided with two positioning grooves matched with the two support plates, limiting parts of the two support plates are respectively clamped in the two positioning grooves, and the limiting parts of the two support plates and the positioning guide plate are fixed by fasteners.

7. The rivet unpinning device of claim 1, wherein: The bottom plate of the mechanism frame is provided with a plurality of positioning blocks for positioning the circuit breaker shell, the clamping plate is provided with a plurality of clamping blocks matched with the positioning blocks, and a clamping cavity for clamping the circuit breaker shell is formed between the positioning blocks and the clamping blocks when the clamping plate is moved to a clamping position.

8. The rivet de-coupling device of claim 7, wherein: The clamping faces of the clamping blocks are respectively provided with clamping guide inclined surfaces.

9. The rivet de-coupling device of claim 1, wherein: The positioning guide plate is provided with a positioning groove matched with the push plate, the push plate is clamped in the positioning groove, and the push plate is provided with a plurality of bolts connected with the positioning guide plate.

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