Molded case circuit breaker thermal element welding tool

Abstract

The utility model relates to a welding tool for a thermal element of a molded case circuit breaker. The technical problem to be solved by the utility model is to provide the molded case circuit breaker thermal element welding tool. According to the technical scheme, the welding tool comprises a fixing plate, a tool bearing assembly, a welding tool assembly and a tool positioning assembly, the welding tool assembly comprises a welding tool base, the welding tool base comprises a tool main base and a main base lifting block, a main base welding opening and a main base inserting opening are formed in the tool main base at intervals, and the tool main base lifting block is connected with the main base lifting block. A main base rear butt joint groove is formed in the back of the tool main base, a main base rear limiting column is arranged in the main base rear butt joint groove, and lifting block limiting columns are arranged on the main base lifting block at intervals. The welding tool assembly has the advantages that the design of the welding tool assembly supports batch placement and positioning of the thermal elements and the wiring boards, efficient spot welding is achieved, the limitation of traditional single-group spot welding is broken through, the welding efficiency is greatly improved, and the welding tool assembly is suitable for assembly line mass production.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of molded case circuit breaker, specifically relates to a molded case circuit breaker thermal element welding frock. BACKGROUND

[0002] The thermal tripping system of the molded case circuit breaker is spliced by a thermal element, a bimetallic strip and a wiring board through multiple electric welding processes, as shown in the drawing, which is a spot welding schematic diagram of a thermal element 70 and a wiring board 71. Figure 10 The thermal element 70 comprises a thermal element welding portion 73, the thermal element welding portion 73 is sequentially bent to form a thermal element middle connecting portion 74 arranged in parallel with the thermal element welding portion 73 and a thermal element mounting portion 75 arranged perpendicularly to the thermal element welding portion 73, the thermal element middle connecting portion 74 is provided with a thermal element riveting hole 76 connected with the bimetallic strip, the wiring board 71 comprises a wiring board welding portion 77 attached below the thermal element welding portion 73, the wiring board welding portion 77 is downwardly and perpendicularly bent to form a wiring board outer connecting portion 78, the wiring board outer connecting portion 78 is provided with a wiring board outer connecting hole 79, and the existing welding frock of the thermal element 70 and the wiring board 71 can only perform single-group spot welding, the welding efficiency is low, the welding frock cannot be adapted to the assembly line, and the welding frock is not suitable for large-batch thermal element spot welding operation. SUMMARY

[0003] To solve the above problems, the utility model aims to provide a molded case circuit breaker thermal element welding frock.

[0004] The utility model discloses a molded case circuit breaker thermal element welding frock adopts the technical scheme: its characterized in that including fixed plate, the frock bearing assembly of being established in the fixed plate, welding frock assembly and frock positioning assembly, the welding frock assembly includes welding frock seat, and the welding frock seat includes frock main seat and the main seat of being used for the middle connecting portion of thermal element and is received main seat and is lifted high piece, the frock main seat is equipped at interval and is used for the wiring board welding portion of thermal element and the wiring board welding portion of wiring board and is carried out spot welding main seat welding interface, with the main seat welding interface is communicated and is used for the main seat insertion of wiring board welding portion, the back of the frock main seat is equipped with main seat rear butt joint groove for wiring board outer connecting portion installation positioning, the main seat rear butt joint groove is equipped with main seat rear limiting column and is connected with wiring board outer connecting hole, the main seat lifting piece is equipped at interval and is used for the riveting hole limiting of thermal element and is lifted high piece limiting column, the back of the main seat lifting piece is equipped with the lifting piece rear stop portion for thermal element mounting portion positioning, the upper portion both ends of the frock main seat are equipped with main seat anti -migration limiting hole, and the frock positioning assembly includes the main seat anti -migration limiting column and is connected with the main seat anti -migration limiting hole.

[0005] The tool positioning assembly further comprises a positioning locking cylinder fixed on the fixing plate, a positioning locking driving block connected with the output end of the positioning locking cylinder and movable up and down through a first sliding block assembly, and a linkage plate connected with the positioning locking driving block, and the linkage plate is provided with the main seat anti-moving limiting column at both ends.

[0006] The welding tool assembly further comprises a lower supporting block for supporting during spot welding and a welding tool bottom plate fixed on the bottom of the welding tool seat, the bottom of the tool main seat is provided with a built-in cavity of the main seat for the up and down movement of the lower supporting block and in communication with the main seat welding interface, the lower supporting block is provided with a lower supporting block top column at intervals, the lower supporting block top column is arranged through the bottom of the main seat welding interface and is used for the lower support of the wiring board welding part and the wiring board welding part during spot welding, the tool receiving assembly comprises a tool lower top block, the tool lower top block is provided with a tool lower top column, the welding tool bottom plate is provided with a bottom plate accommodation hole, and the tool lower top column is arranged through the bottom plate accommodation hole and abuts against the lower supporting block below.

[0007] The welding tool assembly further comprises a buffer spring and a guide rod, the welding tool bottom plate is provided with a bottom plate threaded hole for fixing the lower end of the guide rod, the lower supporting block is provided with a lower supporting block guide hole for sleeving the guide rod, and the buffer spring is sleeved on the guide rod, the upper end of the buffer spring abuts against the lower supporting block below, and the lower end of the buffer spring abuts against the welding tool bottom plate.

[0008] The tool receiving assembly further comprises a receiving cylinder fixed on the fixing plate and a second sliding block assembly, the output end of the receiving cylinder is connected with the tool lower top block, and the tool lower top block is movable up and down through the second sliding block assembly.

[0009] The plastic shell circuit breaker thermal element welding tool of the utility model has the advantages that the design of the welding tool assembly supports batch placement and positioning of thermal elements and wiring boards, efficient spot welding is realized, the limitation of traditional single-group spot welding is broken, the welding efficiency is greatly improved, and the utility model is suitable for assembly line mass production; the tool receiving assembly cooperates with the lower supporting block and the buffer spring, the lower support of the welding part during spot welding is improved, the contact stability of the welding surface is ensured, and the welding quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0011] Figure 1 is the structure schematic diagram of the plastic shell circuit breaker thermal element welding tool of the utility model;

[0012] Figure 2 is the exploded view of the welding tool assembly of the utility model;

[0013] Figure 3 is a structural schematic view of the welding tool seat of the utility model;

[0014] Figure 4 is Figure 3 an enlarged view of

[0015] Figure 5 is a structural schematic view of the welding tool seat of the utility model;

[0016] Figure 6 is a structural schematic view of the tool positioning assembly of the utility model;

[0017] Figure 7 is a structural schematic view of the lower supporting block of the utility model;

[0018] Figure 8 is a structural schematic view of the welding tool base plate of the utility model;

[0019] Figure 9 is a structural schematic view of the tool receiving assembly of the utility model;

[0020] Figure 10 is a schematic view of the spot welding structure of the existing thermal element and the wiring board. DETAILED DESCRIPTION

[0021] As Figures 1-9The utility model relates to a plastic -clad circuit breaker thermal element welding frock shown, the utility model discloses a plastic -clad circuit breaker thermal element welding frock, including fixed plate 1, the frock bearing assembly 2 of being established on fixed plate 1, welding frock assembly 3 and frock positioning assembly 4, welding frock assembly 3 includes welding frock seat 6, welding frock seat 6 includes frock main seat 10 and be used for the main seat of thermal element middle connection 74 bearing 11, the main seat 10 on interval is equipped with the main seat welding interface 12 of the wiring board welding part 77 of thermal element 70 with the wiring board welding part 77 of wiring board 71 carries out spot welding, with main seat welding interface 12 and be used for the main seat of wiring board welding part 77 insertion 13, the main seat rear butt joint groove 14 of wiring board outer connection 78 installation positioning is equipped with in main seat rear butt joint groove 14 with wiring board outer connection hole 79 butt joint main seat rear limiting column 15, the main seat lifting block 11 on interval is equipped with the lifting block limiting column 16 for thermal element riveting hole 76 limit, the main seat lifting block 11 rear part is equipped with the lifting block rear stop 17 for thermal element mounting part 75 positioning, the main seat 10 upper portion both ends are equipped with main seat anti -migration positioning hole 19, the frock positioning assembly 4 includes with main seat anti -migration positioning hole 19 opposite interface main seat anti -migration limiting column 20, welding frock seat 6 can be placed in batches positioning to thermal element 70 with wiring board 71, not easy to fall off and welding surface stable controllable, welding frock assembly 3 is equipped with positioning structure, and it is convenient to carry out butt joint limiting with frock positioning assembly 4 on the assembly line, butt joint is accurate and convenient, the design of welding frock assembly 3 supports batch placement and positioning thermal element 70 with wiring board 71, realizes high -efficient spot welding, breaks through the limitation of traditional single group spot welding, and welding efficiency is greatly improved, and it is applicable to the mass production of the assembly line.

[0022] The frock positioning assembly 4 further includes a positioning locking cylinder 22 fixed to the fixed plate 1, a positioning locking driving block 23 connected to an output end of the positioning locking cylinder 22 and movable up and down through a first sliding block assembly 24, and a linkage plate 25 connected to the positioning locking driving block 23. The linkage plate 25 is provided with the main seat anti-migration limiting column 20 at both ends. The frock positioning assembly 4 is used for positioning and locking the welding frock assembly 3, realizes accurate butt joint and locking with the assembly line, improves the accuracy of welding, realizes accurate butt joint, reduces the time and error of manual adjustment, and improves the welding quality.

[0023] The welding tool assembly 3 further comprises a lower supporting block 8 for supporting during spot welding and a welding tool bottom plate 7 fixed at the bottom of the welding tool seat 6, the bottom of the tool main seat 10 is provided with a main seat built-in cavity 27 for the up-down movement of the lower supporting block 8 and connected with the main seat welding interface 12, the lower supporting block 8 is provided with a lower supporting block top column 28 at intervals, which is arranged through the bottom of the main seat welding interface 12 and used for the lower support of the wiring board welding part 77 during spot welding with the wiring board welding part 77, the tool receiving assembly 2 comprises a tool lower top block 29, the tool lower top block 29 is provided with a tool lower top column 30, the welding tool bottom plate 7 is provided with a bottom plate displacement hole 31, the tool lower top column 30 is arranged through the bottom plate displacement hole 31 and abuts against the lower supporting block 8, the tool receiving assembly 2 cooperates with the lower supporting block 8, improves the lower support of the welding part during spot welding, ensures the contact stability of the welding surface and improves the welding quality.

[0024] The welding tool assembly 3 further comprises a buffer spring 9 and a guide rod 33, the welding tool bottom plate 7 is provided with a bottom plate threaded hole 34 for fixing the lower end of the guide rod 33, the lower supporting block 8 is provided with a lower supporting block guide hole 35 for sleeving the guide rod 33, the buffer spring 9 is sleeved on the guide rod 33, the upper end of the buffer spring 9 abuts against the lower supporting block 8 and the lower end of the buffer spring 9 abuts against the welding tool bottom plate 7.

[0025] The tool receiving assembly 2 further comprises a receiving cylinder 37 fixed on the fixed plate 1 and a second sliding block assembly 38, the output end of the receiving cylinder 37 is connected with the tool lower top block 29, the tool lower top block 29 can move up and down through the second sliding block assembly 38, and the cooperation of the tool receiving assembly 2 and the tool positioning assembly 4 realizes automatic operation and is easy to integrate with a flow line.

[0026] The above only describes the preferred embodiment of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A molded case circuit breaker thermal element welding fixture, characterized by: The utility model provides a welding tooling device, including fixed plate (1), the tooling receiving assembly (2) of being established in fixed plate (1), welding tooling assembly (3) and tooling positioning assembly (4), welding tooling assembly (3) includes welding tooling seat (6), welding tooling seat (6) includes tooling main seat (10) and the main seat lifting block (11) for the receiving of hot element middle connecting portion (74), the main seat (10) is equipped with the main seat welding interface (12) of the main seat (10) on interval for the hot element (70) and the wiring board welding portion (77) of wiring board (71) carry out spot welding, the main seat insertion port (13) for wiring board welding portion (77) insertion with main seat welding interface (12) intercommunication, the main seat rear counterposition slot (14) for wiring board external portion (78) installation positioning is equipped with the main seat rear limiting post (15) in main seat rear counterposition slot (14) and wiring board external hole (79) counterposition, the main seat lifting block (11) is equipped with the lifting block limiting post (16) for hot element riveting hole (76) limit on main seat lifting block (11) interval, the main seat lifting block (11) rear is equipped with the lifting block rear stop portion (17) for hot element installation portion (75) positioning, the main seat (10) both ends are equipped with main seat anti -migration limiting post (20) on the main seat (10) upper portion, tooling positioning assembly (4) includes the main seat anti -migration limiting post (20) counterposition of main seat anti -migration limiting post (20).

2. The molded case circuit breaker thermal element welding fixture of claim 1, wherein: The tooling positioning assembly (4) further includes a positioning locking cylinder (22) fixed on the fixed plate (1), a positioning locking driving block (23) connected with the output end of the positioning locking cylinder (22) and movable up and down through a first sliding block assembly (24), and a linkage plate (25) connected with the positioning locking driving block (23). The linkage plate (25) is provided with the main seat anti-migration limiting post (20) at both ends. The tooling positioning assembly (4) is used for positioning and locking the welding tooling assembly (3).

3. The molded case circuit breaker thermal element welding fixture of claim 1, wherein: The welding tooling assembly (3) further includes a lower supporting block (8) used for supporting during spot welding and a welding tooling bottom plate (7) fixed on the bottom of the welding tooling seat (6). The bottom of the tooling main seat (10) is provided with a built-in cavity (27) of the tooling main seat (10) used for the up and down movement of the lower supporting block (8) and communicated with the main seat welding interface (12). The lower supporting block (8) is provided with a lower supporting block top post (28) penetrating the bottom of the main seat welding interface (12) and used for supporting the wiring board welding portion (77) during spot welding. The tooling receiving assembly (2) includes a tooling lower top block (29). The tooling lower top block (29) is provided with a tooling lower top post (30). The welding tooling bottom plate (7) is provided with a bottom plate accommodation hole (31). The tooling lower top post (30) is located below the lower supporting block (8) after penetrating the bottom plate accommodation hole (31).

4. The molded case circuit breaker thermal element welding fixture of claim 3, wherein: The welding tool assembly (3) further comprises a buffer spring (9) and a guide rod (33), the welding tool base plate (7) is provided with a base plate threaded hole (34) for fixing the lower end of the guide rod (33), the lower supporting block (8) is provided with a lower supporting block guide hole (35) for sleeving the guide rod (33), and the buffer spring (9) is sleeved on the guide rod (33) and the upper end thereof abuts against the lower supporting block (8) and the lower end thereof abuts against the welding tool base plate (7).

5. The molded case circuit breaker thermal element welding fixture of claim 3, wherein: The tool receiving assembly (2) further comprises a receiving cylinder (37) and a second slider assembly (38) fixed on the fixed plate (1), the output end of the receiving cylinder (37) is connected with the tool lower top block (29), and the tool lower top block (29) can move up and down through the second slider assembly (38).

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