A sizing fixture for a miniature circuit breaker housing

Abstract

The utility model belongs to the field of circuit breaker, specifically relates to a kind of setting fixture of small circuit breaker shell, including setting box and pneumatic clamping mechanism, pneumatic clamping mechanism includes cylinder and setting clamp plate, setting box is provided with setting groove for placing small circuit breaker shell in, the piston rod of cylinder has screw portion extending in setting groove, setting clamp plate is provided with guide sleeve, the tail portion of screw portion is inserted in guide sleeve, setting is provided on screw portion Limiting assembly, buffering spring is arranged between limiting assembly and setting clamp plate;Add buffering spring on setting clamp plate, buffering spring can effectively reduce the impact force of setting clamp plate to small circuit breaker shell, avoid damaging small circuit breaker shell due to the impact of setting clamp plate too big.The positioning fixture adopts pneumatic drive structure design, convenient operation, and setting efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker technology, specifically relating to a shaping fixture for a miniature circuit breaker housing. 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. In the production process of miniature circuit breakers, the circuit breaker housing, after being extruded by an injection molding machine, needs to be placed in a shaping fixture for a shaping process.

[0003] The existing shaping fixture for miniature circuit breaker housings uses a shaping clamp to hold the housing. The impact force exerted by the shaping clamp on the housing is too great, which can easily damage the miniature circuit breaker housing. In addition, the structural design of the shaping fixture is relatively complex and inconvenient to operate, which greatly affects the production efficiency of miniature circuit breakers. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a shaping fixture for miniature circuit breaker housings, which is easy to operate and can effectively improve the quality of miniature circuit breaker housings.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A shaping fixture for a miniature circuit breaker housing includes a shaping box and a pneumatic clamping mechanism. The pneumatic clamping mechanism includes a cylinder and a shaping clamp plate slidably disposed in the shaping box. The shaping box is provided with a shaping groove for placing the miniature circuit breaker housing. The piston rod of the cylinder has a screw portion extending into the shaping groove. The shaping clamp plate is provided with a guide sleeve. The tail of the screw portion is inserted into the guide sleeve. A limit component is provided on the screw portion. A buffer spring is provided between the limit component and the shaping clamp plate.

[0006] In some embodiments, the limiting component includes an adjusting nut and a limiting disc disposed on the screw portion, the limiting disc being fitted onto the screw portion and abutting between the adjusting nut and the buffer spring.

[0007] In some embodiments, the tail end of the screw is provided with a guide nut, and the guide sleeve has a guide groove for the guide nut to slide in, and the screw drives the guide nut to reciprocate within the guide groove.

[0008] In some embodiments, the tail of the screw portion has a guide protrusion, and the guide sleeve has a guide groove for the guide protrusion to slide in, and the screw portion drives the guide protrusion to reciprocate within the guide groove.

[0009] In some embodiments, an aluminum alloy clamping plate is linkedly provided on the shaping clamping plate, and a shaping clamping cavity for placing a miniature circuit breaker housing is formed between the aluminum alloy clamping plate and the shaping box.

[0010] In some embodiments, the aluminum alloy clamp is provided with a thermally conductive silicone pad that abuts against the miniature circuit breaker housing.

[0011] In some embodiments, a thermally conductive silicone buffer pad is provided on the side of the shaping groove facing the thermally conductive silicone pad.

[0012] In some embodiments, the aluminum alloy clamp is provided with guide protrusions, and the shaping groove is provided with guide holes for the guide protrusions to slide.

[0013] In some embodiments, the shaping box is made of aluminum alloy, and a plurality of heat dissipation grooves are respectively provided on the inner wall of the shaping groove of the shaping box.

[0014] In some embodiments, heat dissipation copper fins are provided on the outer wall of the shaped housing.

[0015] The beneficial effects of this utility model are as follows: A buffer spring is added to the shaping clamp, which effectively reduces the impact force of the shaping clamp on the miniature circuit breaker housing, preventing damage to the housing due to excessive impact. This positioning fixture adopts a pneumatic drive structure design, which is convenient to operate and has high shaping efficiency. The shaping box and aluminum alloy clamp are made of aluminum alloy, and the thermally conductive silicone buffer pad inside the shaping box can play a role in heat dissipation and buffering, thereby facilitating heat dissipation of the miniature circuit breaker housing and preventing damage to the housing from the shaping box. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a perspective view of the first embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the first embodiment of the present utility model; Figure 3 This is a perspective view of the shaping clamp of the first embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: Example 1 like Figure 1-2 As shown, a shaping fixture for a miniature circuit breaker housing includes a shaping box 1 and a pneumatic clamping mechanism 2. The pneumatic clamping mechanism 2 includes a cylinder 21 and a shaping clamping plate 22 slidably disposed in the shaping box 1. The shaping box 1 is provided with a shaping groove 11 for placing the miniature circuit breaker housing. The piston rod 211 of the cylinder 21 has a screw portion 212 extending into the shaping groove 11. The shaping clamping plate 22 is provided with a guide sleeve 23. The tail of the screw portion 212 is inserted into the guide sleeve 23. A limit component 3 is provided on the screw portion 212. A buffer spring 24 is provided between the limit component 3 and the shaping clamping plate 22.

[0022] like Figure 1As shown, the limiting assembly 3 includes an adjusting nut 31 and a limiting disc 32 mounted on the screw portion 212. The limiting disc 32 is fitted onto the screw portion 212 and abuts against the adjusting nut 21 and the buffer spring 24. The limiting assembly adopts an adjusting nut structure design, which allows adjustment of the spring force of the buffer spring by rotating the adjusting nut. This allows for adjustment of the clamping pressure to suit different specifications of miniature circuit breaker housings, thereby improving the shaping quality of the miniature circuit breaker housing. A guide nut 25 is provided at the tail of the screw portion 212. The guide sleeve 23 has a guide groove 231 for the guide nut 25 to slide within it. The screw portion 212 drives the guide nut 25 to reciprocate within the guide groove 231. The guide nut serves a guiding function and can adjust the stroke of the piston rod, thus adapting to the shaping of miniature circuit breaker housings of different specifications. An aluminum alloy clamping plate 221 is linked to the shaping clamping plate 22, forming a shaping clamping cavity 220 between the aluminum alloy clamping plate 221 and the shaping box 1 for placing the miniature circuit breaker housing. The aluminum alloy clamping plate has good heat dissipation performance, which is beneficial to the heat dissipation of the miniature circuit breaker housing inside the shaping box. A thermally conductive silicone pad 222 is provided on the aluminum alloy clamping plate 221 to abut against the miniature circuit breaker housing. The thermally conductive silicone pad can play a heat dissipation and cushioning role, which is beneficial to the heat dissipation of the miniature circuit breaker housing inside the shaping box, and can also prevent the aluminum alloy clamping plate from damaging the miniature circuit breaker housing. A thermally conductive silicone buffer pad 111 is provided in the shaping groove 11 on the side facing the thermally conductive silicone pad 222. The thermally conductive silicone buffer pad can play a heat dissipation and cushioning role, which is beneficial to the heat dissipation of the miniature circuit breaker housing inside the shaping box, and can also prevent the shaping box from damaging the miniature circuit breaker housing.

[0023] like Figure 2 and 3 As shown, the aluminum alloy clamping plate 221 is provided with guide protrusions 2211, and the shaping groove 11 is provided with guide holes 112 for the guide protrusions 222 to slide. The aluminum alloy clamping plate is slidably positioned in the guide holes of the shaping groove through the guide protrusions, thereby ensuring that the aluminum alloy clamping plate can reliably operate within the shaping box, and the guide holes can also play a heat dissipation role, thus facilitating the heat dissipation of the miniature circuit breaker housing within the shaping box. The shaping box 1 is made of aluminum alloy, and several heat dissipation grooves 113 are respectively provided on the inner wall of the shaping groove 11 of the shaping box 1. The heat dissipation grooves within the shaping groove facilitate the heat dissipation of the miniature circuit breaker housing within the shaping groove.

[0024] The outer wall of the shaping box 1 is provided with heat dissipation copper fins 114. The heat dissipation copper fins have good thermal conductivity, which is conducive to heat dissipation of the miniature circuit breaker housing inside the shaping box and helps to improve the shaping quality of the miniature circuit breaker housing.

[0025] Example 2 The difference between this embodiment and Embodiment 1 is that the screw portion 212 is connected to the guide sleeve 23 via the guide protrusion 213, as shown below. Figure 4 As shown, the screw portion 212 has a guide protrusion 213 at its tail end, and the guide sleeve 23 has a guide groove 231 within it for the guide protrusion 213 to slide. The screw portion 212 drives the guide protrusion 213 to reciprocate within the guide groove 231. The screw portion is engaged within the guide sleeve by the guide protrusion, thereby facilitating the assembly of the guide sleeve and the screw portion and ensuring more reliable transmission between the guide sleeve and the screw portion.

[0026] A buffer spring is added to the shaping clamp to effectively reduce the impact force of the shaping clamp on the miniature circuit breaker housing, preventing damage to the housing due to excessive impact. This positioning fixture adopts a pneumatic drive structure design, which is convenient to operate and has high shaping efficiency. The shaping box and aluminum alloy clamp are made of aluminum alloy. The thermally conductive silicone buffer pad inside the shaping box provides heat dissipation and cushioning, thus facilitating heat dissipation of the miniature circuit breaker housing and preventing damage to the housing from the shaping box.

[0027] 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 shaping fixture for a miniature circuit breaker housing, characterized in that: The device includes a shaping box and a pneumatic clamping mechanism. The pneumatic clamping mechanism includes a cylinder and a shaping clamping plate slidably disposed within the shaping box. The shaping box is provided with a shaping groove for placing a miniature circuit breaker housing. The piston rod of the cylinder has a screw portion extending into the shaping groove. The shaping clamping plate is provided with a guide sleeve. The tail end of the screw portion is inserted into the guide sleeve. A limit component is provided on the screw portion. A buffer spring is provided between the limit component and the shaping clamping plate.

2. The shaping fixture for a miniature circuit breaker housing according to claim 1, characterized in that: The limiting component includes an adjusting nut and a limiting disc disposed on the screw section. The limiting disc is fitted onto the screw section and abuts against the adjusting nut and the buffer spring.

3. The shaping fixture for a miniature circuit breaker housing according to claim 1 or 2, characterized in that: The screw section is provided with a guide nut at its tail end, and the guide sleeve has a guide groove for the guide nut to slide in. The screw section drives the guide nut to reciprocate within the guide groove.

4. The shaping fixture for a miniature circuit breaker housing according to claim 1 or 2, characterized in that: The screw portion has a guide protrusion at its tail end, and the guide sleeve has a guide groove inside which the guide protrusion can slide. The screw portion drives the guide protrusion to reciprocate within the guide groove.

5. The shaping fixture for a miniature circuit breaker housing according to claim 1, characterized in that: An aluminum alloy clamp is linked to the shaping clamp, and a shaping clamping cavity for placing a miniature circuit breaker housing is formed between the aluminum alloy clamp and the shaping box.

6. The shaping fixture for a miniature circuit breaker housing according to claim 5, characterized in that: The aluminum alloy clamp is provided with a thermally conductive silicone pad that abuts against the housing of the miniature circuit breaker.

7. The shaping fixture for a miniature circuit breaker housing according to claim 6, characterized in that: A thermally conductive silicone buffer pad is provided on the side of the shaping groove facing the thermally conductive silicone pad.

8. The shaping fixture for a miniature circuit breaker housing according to claim 5, 6, or 7, characterized in that: The aluminum alloy clamp is provided with guide protrusions, and the shaping groove is provided with guide holes for the guide protrusions to slide.

9. The shaping fixture for a miniature circuit breaker housing according to claim 1, characterized in that: The shaping box is made of aluminum alloy, and several heat dissipation grooves are provided on the inner wall of the shaping groove of the shaping box.

10. The shaping fixture for a miniature circuit breaker housing according to claim 9, characterized in that: The outer wall of the molded box is provided with heat dissipation copper fins.

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