Welding positioning tooling and welding method for micro-break moving contact assembly

Abstract

The present invention relates to a welding positioning tool and a welding method for a micro-break moving contact assembly. The welding positioning tool for the micro-break moving contact assembly includes: a connection plate positioning assembly, a terminal block positioning assembly, a finished welding product positioning assembly, an arcing angle positioning assembly, a double gold sheet positioning assembly, a soft connection positioning assembly, and a moving contact positioning groove. The present invention simplifies the loading process during the welding of the micro-break moving contact assembly by rationally arranging the positions of various components, eliminating the need for repeated transfer of semi-finished products; at the same time, corresponding positioning assemblies are provided for each component, which can automatically position each component and welding point, thereby improving production efficiency and product consistency.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, in particular to a welding positioning tool and a welding method for a micro-break moving contact assembly. Background Art

[0002] The micro-break moving contact assembly consists of a mechanism base, moving contact, double gold plates, arc-starting angle, connecting plate, terminal block, and flexible connector, requiring six welds. During welding, manual loading is typically used, with components placed sequentially on a fixture before the equipment is started, resulting in low production efficiency.

[0003] To address the issue of manual loading, the micro-break moving contact assembly adopts automatic loading during welding. However, existing automatic loading methods load individual components one by one, transfer the welded semi-finished products to the cassette, and finally load the semi-finished products onto the tray for welding.

[0004] However, existing automated loading methods require repeated transfer of semi-finished products, making the process complex. Furthermore, the tray cannot precisely position individual components, which can easily lead to deviations in solder joint placement and poor product consistency. Summary of the Invention

[0005] Based on this, the object of the present invention is to provide a welding positioning tool and a welding method for a micro-break moving contact assembly.

[0006] The present invention is achieved through the following technical solutions: A welding and positioning tool for a micro-break moving contact assembly, comprising:

[0007] The connecting plate positioning assembly includes a connecting plate positioning movable block, a connecting plate pressing pin and a connecting plate positioning hole. The connecting plate positioning movable block is provided with a spring. The connecting plate positioning hole passes through the connecting plate positioning movable block. The connecting plate pressing pin is fixed to the surface of the connecting plate positioning movable block.

[0008] A wiring board positioning assembly is located below the connection board positioning assembly;

[0009] The welding finished product positioning assembly includes a positioning groove, a double gold sheet secondary positioning assembly, a terminal board secondary positioning assembly, an arc striking angle secondary positioning assembly and a connecting plate secondary positioning block, the positioning groove is located on one side of the terminal board positioning assembly, the shape of the positioning groove is adapted to the mechanism seat and the moving contact after welding, the arc striking angle secondary positioning assembly is located above the positioning groove, the connecting plate secondary positioning block is located on the side of the arc striking angle secondary positioning assembly away from the connecting plate positioning assembly, the double gold sheet secondary positioning assembly includes a double gold sheet secondary clamping pin, a double gold sheet secondary positioning hole and a double gold sheet secondary positioning block, a spring is provided in the double gold sheet secondary positioning movable block, the double gold sheet secondary positioning hole passes through the double gold sheet secondary positioning movable block, the double gold sheet secondary clamping pin is fixed on the double gold sheet secondary positioning movable block, and the terminal board secondary positioning assembly is located on the side of the double gold sheet secondary positioning assembly away from the terminal board positioning assembly;

[0010] An arc striking angle positioning assembly is located on a side of the connecting plate secondary positioning block away from the arc striking angle secondary positioning assembly;

[0011] The double gold sheet positioning assembly is located below the arc striking angle positioning assembly and includes a double gold sheet positioning movable block, a double gold sheet pressing pin, and a double gold sheet positioning hole. A spring is provided in the double gold sheet positioning movable block, the double gold sheet positioning hole passes through the double gold sheet positioning movable block, and the double gold sheet pressing pin is fixed to the double gold sheet positioning movable block.

[0012] A soft connection positioning assembly is located on a side of the double gold sheet positioning assembly close to the finished welding product positioning assembly;

[0013] The moving contact positioning groove is located on a side of the soft connection positioning component away from the double gold sheet positioning component.

[0014] The micro-break moving contact assembly welding positioning tooling of the present application includes a connecting plate positioning assembly, a terminal board positioning assembly, a welding finished product positioning assembly, an arc striking angle positioning assembly, a double gold sheet positioning assembly, a soft connection positioning assembly and a moving contact positioning groove. By rationally arranging the positions of various components, there is no need to repeatedly transfer semi-finished products, which simplifies the loading process during the welding of the micro-break moving contact assembly; at the same time, corresponding positioning assemblies are set for each component, which can automatically position each component and welding point position, thereby improving production efficiency and product consistency.

[0015] In one embodiment, the positioning tool further includes a base plate, a left positioning plate and a right positioning plate, and the left positioning plate and the right positioning plate are fixed on the base plate.

[0016] In one embodiment, the connecting plate positioning movable block, the double gold sheet positioning movable block and the double gold sheet secondary positioning movable block are all embedded in the base plate, and the connecting plate positioning hole, the double gold sheet positioning hole and the double gold sheet secondary positioning hole all pass through the base plate.

[0017] In one embodiment, the connecting plate positioning assembly further includes a first connecting plate positioning block and a second connecting plate positioning block, and the first connecting plate positioning block and the second connecting plate positioning block are spaced apart and arranged on the left positioning plate.

[0018] In one embodiment, the first connecting plate positioning block is a rectangular structure, the second connecting plate positioning block is a U-shaped structure, the U-shaped opening of the second connecting plate positioning block faces the first connecting plate positioning block, and the connecting plate clamping pin protrudes from the U-shaped groove of the second connecting plate positioning block.

[0019] In one embodiment, the double gold sheet positioning assembly further includes a double gold sheet positioning groove, the double gold sheet positioning groove is provided on the right positioning plate, and the double gold sheet pressing pin protrudes from the double gold sheet positioning groove.

[0020] In one embodiment, the soft connection positioning assembly includes a soft connection positioning movable block, a soft connection positioning hole, a first soft connection positioning block and a second soft connection positioning block. A spring is provided in the soft connection positioning movable block. The lower side of the soft connection positioning movable block protrudes from the lower end of the substrate. The first soft connection positioning block and the second soft connection positioning block are respectively located at the upper and lower ends of the soft connection positioning movable block and protrude from the surface of the soft connection positioning movable block. The soft connection positioning hole passes through the soft connection positioning movable block and is located at one end of the first soft connection positioning block.

[0021] In one embodiment, the positioning tool further includes an insulating component, which is arranged on a portion of the substrate that is not covered by the left positioning plate and the right positioning plate, and the insulating component includes an insulating pin and an insulating plate.

[0022] In one embodiment, the positioning tool further includes a support plate, the substrate is arranged at the upper end of the support plate; and an RFID identification card is arranged on the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the welding and positioning tooling for the micro-break moving contact assembly of this application;

[0024] Figure 2 for Figure 1 A top view of

[0025] Figure 3 for Figure 1Schematic diagram of the structure without the left positioning plate, right positioning plate and related components;

[0026] Figure 4 for Figure 3 A top view of

[0027] Figure 5 for Figure 1 Structural diagram of each component being loaded;

[0028] Figure 6 for Figure 5 Top view of . DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In response to the problems of complex loading process, low production efficiency and poor product consistency during welding of micro-break moving contact assemblies, the micro-break moving contact assembly welding positioning tooling of the present application simplifies the loading process during welding of micro-break moving contact assemblies by rationally arranging the positions of various components and setting up positioning components in a targeted manner. It can automatically position the positions of various components and welding points, thereby improving production efficiency and product consistency.

[0031] The welding positioning tooling of the micro-break moving contact assembly provided in the embodiment of the present application includes: a support plate 1, a base plate 2, a left positioning plate 3, a right positioning plate 4, an insulating assembly, a connecting plate positioning assembly, a terminal board positioning assembly, an arc striking angle positioning assembly, a double gold sheet positioning assembly, a soft connection positioning assembly, a moving contact positioning groove and a welding finished product positioning assembly.

[0032] The support plate 1 is a rectangular parallelepiped structure used to support other parts of the positioning tooling. In a preferred embodiment, an RFID identification card 12 is provided on the support plate 1 to identify the tooling at each station, thereby achieving full-process online welding of the micro-break moving contact assembly.

[0033] The base plate 2 is fixed to the top of the support plate 1, and the left and right positioning plates 3 and 4 are fixed to the base plate 2. The insulating assembly is provided in the portion of the base plate 2 not covered by the left and right positioning plates 3 and 4. The insulating assembly includes insulating pins 51 and an insulating plate 52. In a preferred embodiment, there are two insulating pins 51, one on each side of the insulating plate 52. The provision of the insulating assembly prevents electrical shunting during welding.

[0034] The connecting plate positioning assembly includes a connecting plate positioning movable block 61, a connecting plate clamping pin 62, a connecting plate positioning hole 63, a first connecting plate positioning block 64 and a second connecting plate positioning block 65. The connecting plate positioning movable block 61 is embedded in the base plate 2, and a spring is provided in the connecting plate positioning movable block 61. The connecting plate positioning hole 63 passes through the connecting plate positioning movable block 61 and the base plate 2. The first connecting plate positioning block 64 and the second connecting plate positioning block 65 are arranged on the left positioning plate 3. The first connecting plate positioning block 64 is a rectangular parallelepiped structure, and the second connecting plate positioning block 65 is a U-shaped structure. The first connecting plate positioning block 64 and the second connecting plate positioning block 65 are arranged at intervals, and the U-shaped opening of the second connecting plate positioning block 65 faces the first connecting plate positioning block 64. The connecting plate clamping pin 62 is fixed on the surface of the connecting plate positioning movable block 61 and protrudes from the U-shaped groove of the second connecting plate positioning block 65.

[0035] When the connecting plate is being loaded, the tooling opening mechanism is inserted into the connecting plate positioning hole 63, so that the connecting plate positioning movable block 61 drives the connecting plate clamping pin 62 to move; the connecting plate is placed between the first connecting plate positioning block 64 and the second connecting plate positioning block 65, and the connecting plate positioning movable block 61 drives the connecting plate clamping pin 62 to move in the opposite direction, so that the connecting plate clamping pin 62 presses the connecting plate onto the first connecting plate positioning block 64, thereby completing the positioning of the connecting plate.

[0036] The terminal block positioning assembly is located below the connecting plate positioning assembly and is arranged on the left positioning plate 3, and includes a first terminal block positioning block 71 and a second terminal block positioning block 72. The first terminal block positioning block 71 is an L-shaped structure, located below the first connecting plate positioning block 64, and spaced apart from the first connecting plate positioning block 64. The second terminal block positioning block 72 includes a main body 721, an upper side plate 722 and a lower side plate 723. The upper side plate 722 is spaced apart from the first terminal block positioning block 71. A groove is provided on the main body 721, and the lower side plate 723 is located at the lower end of the main body, and its extension direction is opposite to that of the upper side plate 722. The grooves of the first terminal block positioning block 71, the upper side plate 722 and the main body 721 form an L-shaped positioning groove for placing the terminal block. After the connecting plate and the terminal block are positioned, the welding positions of the terminal block and the connecting plate overlap to facilitate welding.

[0037] The arc striking angle positioning assembly is disposed on the right positioning plate 4 and includes a first arc striking angle positioning block 81 and a second arc striking angle positioning block 82. The first arc striking angle positioning block 81 and the second arc striking angle positioning block 82 each include two positioning plates spaced apart. The space between the two positioning plates is used to position the arc striking angle. The position and distance between the first arc striking angle positioning block 81 and the second arc striking angle positioning block 82 are adapted to the shape of the arc striking angle.

[0038] The double-gold plate positioning assembly includes a double-gold plate positioning groove 91, a double-gold plate positioning movable block 92, a double-gold plate holding pin 93, and a double-gold plate positioning hole 94. The double-gold plate positioning groove 91 is located on the right positioning plate 4, below the second arc-starting angle positioning block 82. The double-gold plate positioning movable block 92 is embedded in the base plate 2 and is equipped with a spring. The double-gold plate positioning hole 94 extends through the double-gold plate positioning movable block 92 and the base plate 2. The double-gold plate holding pin 93 is fixed to the double-gold plate positioning movable block 92 and protrudes from the right positioning plate 4.

[0039] When the double gold sheet is loaded, the tooling opening mechanism is inserted into the double gold sheet positioning hole 94, so that the double gold sheet positioning movable block 92 drives the double gold sheet pressing pin 93 to move; after the double gold sheet is loaded, the double gold sheet positioning movable block 92 drives the double gold sheet pressing pin 93 to move in the opposite direction, so that the double gold sheet pressing pin 93 presses the double gold sheet to complete the positioning of the double gold sheet.

[0040] The flexible connection positioning assembly is located on the side of the double gold sheet positioning assembly near the left positioning plate 3 and includes a flexible connection positioning movable block 101, a flexible connection positioning hole 102, a first flexible connection positioning block 103, and a second flexible connection positioning block 104. The flexible connection positioning movable block 101 is an overall rectangular parallelepiped structure with a spring inside. The lower side of the flexible connection positioning movable block 101 protrudes from the lower end of the base plate 2. The first flexible connection positioning block 103 and the second flexible connection positioning block 104 are located at the upper and lower ends of the flexible connection positioning movable block 101, respectively, and protrude from the surface of the flexible connection positioning movable block 101. The flexible connection positioning hole 102 passes through the flexible connection positioning movable block 101 and is located at one end of the second flexible connection positioning block 104.

[0041] When the soft connection is loaded, the tooling opening mechanism is inserted into the soft connection positioning hole 102, and the soft connection positioning movable block 101 drives the second soft connection positioning block 104 to move in the direction away from the right positioning plate 4; the soft connection is placed in the space between the right positioning plate 4 and the second soft connection positioning block 104, and the soft connection positioning movable block 101 drives the second soft connection positioning block 104 to move toward the right positioning plate 4 under the action of the spring, thereby completing the positioning of the soft connection.

[0042] The movable contact positioning groove 11 is provided on the right positioning plate 4 and its shape is adapted to the shape of the movable contact. The movable contact positioning groove 11 is provided on the side of the soft connection positioning component close to the left positioning plate 3.

[0043] The finished welding product positioning assembly includes a positioning groove 121, a first mechanism seat positioning block 122, a second mechanism seat positioning block 123, a double gold sheet secondary positioning assembly, a terminal block secondary positioning assembly, an arc starting angle secondary positioning assembly, and a connecting plate secondary positioning block 125. The positioning groove 121 is located on the left positioning plate 3, and its shape is adapted to the mechanism seat and moving contact after welding. The first mechanism seat positioning block 122 is set on the left positioning plate 3, below the second terminal block positioning block 72, and is spaced apart from the lower side plate 723 of the second terminal block positioning block 72. The second mechanism seat positioning block 123 is located on the side of the first mechanism seat positioning block 122 close to the right positioning plate 4, and is spaced apart from the first mechanism seat positioning block 122. The lower side plate 723 of the second terminal block positioning block 72, the first mechanism seat positioning block 122, the second mechanism seat positioning block 123, and the positioning groove 121 cooperate to position the mechanism seat.

[0044] The arc striking angle secondary positioning assembly is mounted on the left positioning plate 3, above the positioning groove 121. It includes a first positioning block 1241, a second positioning block 1242, and a third positioning block 1243. The first and second positioning blocks 1241, 1242 are spaced apart, with the gap between them used to position the arc striking angle. The third positioning block 1243 is located on the side of the first and second positioning blocks 1241, 1242 closer to the right positioning plate 4. The position and distance between the third positioning block 1243 and the first and second positioning blocks 1241, 1242 are adapted to the shape of the arc striking angle.

[0045] The connecting plate secondary positioning block 125 is installed on the left positioning plate 3, on the side of the third positioning block 1243 of the arc-starting horn secondary positioning assembly that is closest to the right positioning plate 4. The connecting plate secondary positioning block 125 is spaced apart from the third positioning block 1243. After the arc-starting horn, double gold plate, and connecting plate are welded, the arc-starting horn and double gold plate are partially positioned between the space between the connecting plate secondary positioning block 125 and the third positioning block 1243. The welded portion of the connecting plate to the terminal block is placed on the other side of the connecting plate secondary positioning block 125.

[0046] The secondary positioning assembly for the wiring board is mounted on the left positioning plate 3 and includes a first L-shaped positioning block 1261 and a second L-shaped positioning block 1262. The first L-shaped positioning block 1261 is positioned below the secondary positioning block 125 of the connection plate, while the second L-shaped positioning block 1262 is located on the side of the first L-shaped positioning block 1261 closer to the right positioning plate 4. The second L-shaped positioning block 1262 is provided with a groove, which, together with the first and second L-shaped positioning blocks 1261, 1262, forms an L-shaped positioning slot for positioning the wiring board.

[0047] The double gold sheet secondary positioning assembly includes a double gold sheet secondary positioning movable block 1271, a double gold sheet secondary pressing pin 1272, a double gold sheet secondary positioning hole 1273 and a double gold sheet secondary positioning block 1274. The double gold sheet secondary positioning movable block 1271 is embedded in the base plate 2, and a spring is provided in the double gold sheet secondary positioning movable block 1271. The double gold sheet secondary positioning hole 1273 passes through the double gold sheet secondary positioning movable block 1271 and the base plate 2. The double gold sheet secondary positioning block 1274 is arranged on the left positioning plate 3, spaced apart from the above-mentioned first L-shaped positioning block 1261, and is located on the side of the above-mentioned first L-shaped positioning block 1261 away from the right positioning plate 4. The double gold sheet secondary pressing pin 1272 is fixed on the double gold sheet secondary positioning movable block 1271, and protrudes from the right positioning plate 4, and is located between the double gold sheet secondary positioning block 1274 and the above-mentioned first L-shaped positioning block 1261.

[0048] The micro-break moving contact assembly welding positioning tooling of the present application includes a connecting plate positioning assembly, a terminal board positioning assembly, a welding finished product positioning assembly, an arc striking angle positioning assembly, a double gold sheet positioning assembly, a soft connection positioning assembly and a moving contact positioning groove. By rationally arranging the positions of various components, there is no need to repeatedly transfer semi-finished products, which simplifies the loading process during the welding of the micro-break moving contact assembly; at the same time, corresponding positioning assemblies are set for each component, which can automatically position each component and welding point position, thereby improving production efficiency and product consistency.

[0049] A method for welding a micro-break moving contact assembly, using the aforementioned micro-break moving contact assembly welding positioning tool, comprises the following steps:

[0050] S1. The tool opening mechanism is inserted into the connection plate positioning hole. The loading mechanism places the connection plate between the first connection plate positioning block and the second connection plate positioning block. The connection plate pressing pin presses the connection plate onto the first positioning block.

[0051] S2. The loading mechanism places the terminal block on the terminal block positioning assembly, wherein the welding points of the connecting plate and the terminal block are overlapped;

[0052] S3, the welding mechanism welds the connecting plate and the terminal board;

[0053] S4, the loading mechanism places the moving contact in the moving contact positioning groove;

[0054] S5. The tool opening mechanism is inserted into the flexible connector positioning hole, and the loading mechanism places the flexible connector between the right positioning plate and the second flexible connector positioning block, wherein the welding points of the flexible connector and the moving contact are overlapped;

[0055] S6. The welding mechanism welds the soft connection and the moving contact;

[0056] S7. The tooling opening mechanism inserts the double gold sheet into the positioning hole. The loading mechanism places the double gold sheet into the positioning groove. The double gold sheet pressing pin presses the double gold sheet onto the right positioning plate. The double gold sheet contacts the welding position of the flexible connection.

[0057] S8, the welding mechanism welds the double gold sheets and the soft connection;

[0058] S9, the loading mechanism places the arc striking angle on the arc striking angle positioning assembly;

[0059] S10, the loading mechanism places the mechanism seat in the positioning groove;

[0060] S11. The tooling opening mechanism inserts the double gold sheet secondary positioning hole. The loading mechanism transfers the welded moving contact, flexible connector, and double gold sheet assembly to the welded finished product positioning assembly. The double gold sheet secondary pressing pin presses the double gold sheet onto the double gold sheet secondary positioning block. The mechanism seat and the welding point of the moving contact are placed overlapping.

[0061] S12, the welding mechanism welds the mechanism seat and the moving contact;

[0062] S13, the loading mechanism moves the arc striking angle to the arc striking angle secondary positioning assembly, wherein the arc striking angle overlaps with the welding point position of the double gold sheet;

[0063] S14, the welding mechanism welds the arc striking angle and the double gold sheet;

[0064] S15, the loading mechanism transfers the welded connecting plate and terminal board to the connecting plate secondary positioning block 125 and the terminal board secondary positioning assembly, wherein the double gold sheet overlaps with the welding point position of the connecting plate;

[0065] S16. The welding mechanism welds the double gold sheets and the connecting plate.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A welding method for a micro-break moving contact assembly, characterized in that: The following steps are involved: S1. The tool opening mechanism is inserted into the connection plate positioning hole. The loading mechanism places the connection plate between the first connection plate positioning block and the second connection plate positioning block. The connection plate pressing pin presses the connection plate onto the first connection plate positioning block. S2. The loading mechanism places the terminal block on the terminal block positioning assembly, wherein the welding points of the connecting plate and the terminal block are overlapped; S3, the welding mechanism welds the connecting plate and the terminal board; S4, the loading mechanism places the moving contact in the moving contact positioning groove; S5. The tool opening mechanism is inserted into the flexible connector positioning hole, and the loading mechanism places the flexible connector between the right positioning plate and the second flexible connector positioning block, wherein the welding points of the flexible connector and the moving contact are overlapped; S6. The welding mechanism welds the soft connection and the moving contact; S7. The tooling opening mechanism inserts the double gold sheet into the positioning hole. The loading mechanism places the double gold sheet into the positioning groove. The double gold sheet pressing pin presses the double gold sheet onto the right positioning plate. The double gold sheet contacts the welding position of the flexible connection. S8, the welding mechanism welds the double gold sheets and the soft connection; S9, the loading mechanism places the arc striking angle on the arc striking angle positioning assembly; S10, the loading mechanism places the mechanism seat in the positioning groove; S11. The tooling opening mechanism inserts the double gold sheet secondary positioning hole. The loading mechanism transfers the welded moving contact, flexible connector, and double gold sheet assembly to the welded finished product positioning assembly. The double gold sheet secondary pressing pin presses the double gold sheet onto the double gold sheet secondary positioning block. The mechanism seat and the welding point of the moving contact are placed overlapping. S12, the welding mechanism welds the mechanism seat and the moving contact; S13, the loading mechanism moves the arc striking angle to the arc striking angle secondary positioning assembly, wherein the arc striking angle overlaps with the welding point position of the double gold sheet; S14, the welding mechanism welds the arc striking angle and the double gold sheet; S15, the loading mechanism transfers the welded connection plate and terminal board to the connection plate secondary positioning block and the terminal board secondary positioning assembly, wherein the double gold sheet overlaps with the welding point position of the connection plate; S16. The welding mechanism welds the double gold sheets and the connecting plate.

2. The welding method of micro-break moving contact assembly according to claim 1, characterized in that: The method adopts a micro-break moving contact assembly welding positioning tool, and the micro-break moving contact assembly welding positioning tool comprises: The connecting plate positioning assembly includes a connecting plate positioning movable block, a connecting plate pressing pin and a connecting plate positioning hole. The connecting plate positioning movable block is provided with a spring. The connecting plate positioning hole passes through the connecting plate positioning movable block. The connecting plate pressing pin is fixed to the surface of the connecting plate positioning movable block. A wiring board positioning assembly is located below the connection board positioning assembly; The welding finished product positioning assembly includes a positioning groove, a double gold sheet secondary positioning assembly, a terminal board secondary positioning assembly, an arc striking angle secondary positioning assembly and a connecting plate secondary positioning block, the positioning groove is located on one side of the terminal board positioning assembly, the shape of the positioning groove is adapted to the mechanism seat and the moving contact after welding, the arc striking angle secondary positioning assembly is located above the positioning groove, the connecting plate secondary positioning block is located on the side of the arc striking angle secondary positioning assembly away from the connecting plate positioning assembly, the double gold sheet secondary positioning assembly includes a double gold sheet secondary clamping pin, a double gold sheet secondary positioning hole and a double gold sheet secondary positioning block, a spring is provided in the double gold sheet secondary positioning movable block, the double gold sheet secondary positioning hole passes through the double gold sheet secondary positioning movable block, the double gold sheet secondary clamping pin is fixed on the double gold sheet secondary positioning movable block, and the terminal board secondary positioning assembly is located on the side of the double gold sheet secondary positioning assembly away from the terminal board positioning assembly; An arc striking angle positioning assembly is located on a side of the connecting plate secondary positioning block away from the arc striking angle secondary positioning assembly; The double gold sheet positioning assembly is located below the arc striking angle positioning assembly and includes a double gold sheet positioning movable block, a double gold sheet pressing pin, and a double gold sheet positioning hole. A spring is provided in the double gold sheet positioning movable block, the double gold sheet positioning hole passes through the double gold sheet positioning movable block, and the double gold sheet pressing pin is fixed to the double gold sheet positioning movable block. A soft connection positioning assembly is located on a side of the double gold sheet positioning assembly close to the finished welding product positioning assembly; The moving contact positioning groove is located on a side of the soft connection positioning component away from the double gold sheet positioning component.

3. The welding method of micro-break moving contact assembly according to claim 2, characterized in that: The positioning tool further includes a base plate, a left positioning plate and a right positioning plate, and the left positioning plate and the right positioning plate are fixed on the base plate.

4. The welding method of micro-break moving contact assembly according to claim 3, characterized in that: The connecting plate positioning movable block, the double gold sheet positioning movable block and the double gold sheet secondary positioning movable block are all embedded in the base plate, and the connecting plate positioning hole, the double gold sheet positioning hole and the double gold sheet secondary positioning hole all pass through the base plate.

5. The welding method of micro-break moving contact assembly according to claim 4, characterized in that: The connecting plate positioning assembly further includes a first connecting plate positioning block and a second connecting plate positioning block, and the first connecting plate positioning block and the second connecting plate positioning block are spaced apart and arranged on the left positioning plate.

6. The welding method of micro-break moving contact assembly according to claim 5, characterized in that: The first connecting plate positioning block is a rectangular parallelepiped structure, the second connecting plate positioning block is a U-shaped structure, the U-shaped opening of the second connecting plate positioning block faces the first connecting plate positioning block, and the connecting plate clamping pin protrudes from the U-shaped groove of the second connecting plate positioning block.

7. The welding method of micro-break moving contact assembly according to claim 4, characterized in that: The double gold sheet positioning assembly further includes a double gold sheet positioning groove, which is arranged on the right positioning plate, and the double gold sheet pressing pin protrudes from the double gold sheet positioning groove.

8. The welding method of micro-break moving contact assembly according to claim 4, characterized in that: The soft connection positioning assembly includes a soft connection positioning movable block, a soft connection positioning hole, a first soft connection positioning block and a second soft connection positioning block. A spring is provided in the soft connection positioning movable block. The lower side of the soft connection positioning movable block protrudes from the lower end of the substrate. The first soft connection positioning block and the second soft connection positioning block are respectively located at the upper and lower ends of the soft connection positioning movable block and protrude from the surface of the soft connection positioning movable block. The soft connection positioning hole passes through the soft connection positioning movable block and is located at one end of the first soft connection positioning block.

9. The welding method for a micro-break moving contact assembly according to any one of claims 3 to 8, characterized in that: The positioning tool further includes an insulating component, which is arranged at a portion of the base plate that is not covered by the left positioning plate and the right positioning plate. The insulating component includes an insulating pin and an insulating plate.

10. The welding method for a micro-break moving contact assembly according to any one of claims 3 to 8, characterized in that: The positioning tool further includes a support plate, the base plate is arranged on the upper end of the support plate; and an RFID identification card is arranged on the support plate.

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