A spot welding device for manufacturing depth detection sensors with stable clamping

Abstract

The invention discloses a spot welding device for manufacturing a depth detection sensor with stable clamping, which belongs to the technical field of spot welding devices. The following scheme is proposed, which includes a spot welding machine body, and a first electrode connecting rod and a second electrode connecting rod installed on the spot welding machine body. The spot welding machine body is provided with a driving structure, and the driving structure is provided with a limiting structure for clamping the pins of the depth detection sensor; by setting the limiting structure, the connecting structure and the placement base, when the wedge blocks on the surfaces of the first limiting frame and the second limiting frame cross, they cooperate with the placement base to complete the clamping and fixing processing of the pins of the depth detection sensor and the metal wire to be spot welded, which can not only accurately lock the pin position of the depth detection sensor, but also ensure that the metal wire to be spot welded is in an ideal welding posture, effectively avoid the deviation and dislocation in the welding process, and greatly improve the welding quality and yield rate.

Description

Technical Field

[0001] The invention relates to the technical field of spot welding devices, and in particular to a spot welding device for manufacturing a depth detection sensor with stable clamping. Background Art

[0002] In the manufacturing process of depth detection sensors, spot welding technology plays a vital role as a key connection process. However, when traditional spot welding devices are used to weld depth detection sensor pins and metal wires, they often face a series of technical difficulties such as unstable clamping, low welding accuracy, and poor heat dissipation.

[0003] For example, the patent number disclosed on the China Patent Network is: 202410072644.5, and the patent name is: A spot welding device for manufacturing sensors with stable clamping, involving the field of spot welding devices including a base, the top of the base is fixedly connected to a welding machine body, the top of the base is fixedly connected to two groups of guide grooves extending into the interior of the base, and a welding mechanism is slidably connected between the two groups of guide grooves.

[0004] First, in the above-mentioned traditional spot welding device, during the workpiece placement stage, the limiting structure is often directly exposed in the working area, which not only occupies valuable operating space, but also may interfere with the operator's work and even cause safety hazards. In addition, due to the inflexible setting of the limiting structure, only rough limiting can be performed, and it is difficult to achieve accurate positioning and fixation of the pins and wires, which leads to easy deviation and misalignment during the welding process, seriously affecting the welding quality and yield rate.

[0005] Secondly, after welding is completed, traditional spot welding devices often lack an effective heat dissipation mechanism. The high temperature generated during the welding process will not only cause thermal damage to the welding parts, but may also cause problems such as welding deformation, weld porosity and inclusions, thereby reducing the density and strength of the weld, and adversely affecting the quality and performance of the depth detection sensor.

[0006] In view of the above problems, the present invention document proposes a spot welding device for manufacturing a depth detection sensor with stable clamping. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a spot welding device for manufacturing depth detection sensors that can not only accurately lock the pin position of the depth detection sensor, but also ensure that the metal wire to be spot welded is in an ideal welding posture, effectively avoiding deviation and dislocation during the welding process, and greatly improving the welding quality and yield rate.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A spot welding device for manufacturing a depth detection sensor with stable clamping, comprising a spot welding machine body, and a first electrode connecting rod and a second electrode connecting rod installed on the spot welding machine body, wherein the spot welding machine body is provided with a driving structure, the driving structure is provided with a limiting structure for clamping a pin of a depth detection sensor, the limiting structure is provided with a connecting structure, the connecting structure guides the limiting structure, an air outlet structure is installed on the second electrode connecting rod, a heat dissipation structure is provided inside the connecting structure, the air outlet structure and the heat dissipation structure cooperate with each other to cool the pin of the depth detection sensor after spot welding;

[0010] The driving structure includes an electric push rod installed on the spot welding machine body, the top of the movable rod of the electric push rod is fixedly connected to the first driving plate, the limiting structure includes two groups of mounting frames respectively fixedly connected to the two sides of the first driving plate, the two mounting frames of the same group are rotatably connected to the second driving plate, the end of the second driving plate away from the mounting frame is rotatably connected to the movable frame, and the two movable frames located on the top of the same group of mounting frames are respectively fixedly connected to the first limiting frame and the second limiting frame;

[0011] The connection structure includes a mounting sleeve fixedly connected to two mounting frames of the same group, a connecting column is slidably connected inside the mounting sleeve, a cross plate is fixedly connected to the top of the connecting column, and the movable frame is slidably connected inside the adjacent cross plate.

[0012] Preferably, the top of the second electrode connecting rod is fixedly connected to a placement base, the two horizontal plates are located at the bottom of the placement base, and when the two horizontal plates move away from the ground, they will contact the placement base, so that the mounting frame can move close to the horizontal plate, and a plurality of slide grooves are provided on the placement base.

[0013] Preferably, the shape between the two second drive plates located at the top of the same group of mounting frames is set to an eight-shape, and when the mounting frame moves close to the cross plate, the two second drive plates push the first limit frame and the second limit frame to move close to each other through the two movable frames.

[0014] Preferably, the first limiting frame and the second limiting frame are both provided with wedge blocks for limiting and fixing the depth detection sensor, and the wedge blocks fixedly connected to the first limiting frame and the second limiting frame are in a cross-distribution design.

[0015] Preferably, the air outlet structure includes a mounting plate fixedly connected to the side of the second electrode connecting rod, the top of the mounting plate is fixedly connected with an air outlet pipe, the shape of the air outlet pipe is set to be V-shaped, and the air outlet of the air outlet pipe is aligned with the top of the second electrode connecting rod.

[0016] Preferably, a connecting pipe is provided at the bottom of the air outlet pipe, and the connecting pipe is configured as a three-way pipe.

[0017] Preferably, the air outlet of the connecting pipe is connected to the air inlet of the air outlet pipe, and the two air inlets of the connecting pipe are respectively connected to the two mounting sleeves.

[0018] Preferably, a baffle is fixedly connected inside the mounting sleeve, the shape of the baffle is set to be a circular ring shape, and the connecting column passes through the baffle, and the baffle is located at the bottom of the air inlet of the connecting pipe.

[0019] Preferably, the heat dissipation structure includes a sealing plate fixedly connected to the bottom of the connecting column, a sealing gasket is fixedly connected to the top of the sealing plate, the sealing gasket fits against the inner wall of the mounting sleeve, a spring is fixedly connected to the bottom of the sealing plate, and a vent hole is provided at the bottom end of the mounting sleeve.

[0020] Preferably, one end of the spring away from the sealing plate is fixedly connected to the mounting sleeve, and the spring is located inside the mounting sleeve.

[0021] Compared with the prior art, the present invention provides a spot welding device for manufacturing a depth detection sensor with stable clamping, which has the following beneficial effects:

[0022] 1. The spot welding device for manufacturing the depth detection sensor with stable clamping is provided with a limit structure, a connection structure and a placement base. When the operator uses the spot welding device to spot weld the pins of the depth detection sensor, the pins of the depth detection sensor and the metal wire to be welded are placed inside the second electrode connecting rod and the placement base. When the driving structure drives the mounting frame to move away from the ground, the cross plate first drives the first limit frame and the second limit frame to rise to the top of the placement base. This design cleverly avoids the space obstacle that the limit structure may pose to the operator in the initial stage of workpiece placement, ensures the smoothness and efficiency of the operation process, and also improves The spot welding efficiency and safety of the operator are improved. When the cross plate contacts the placement base, as the mounting frame continues to move closer to the cross plate, the second driving plate pushes the first limit frame and the second limit frame to move closer to each other through the movable frame. When the wedge blocks on the surfaces of the first limit frame and the second limit frame intersect, they cooperate with the placement base to complete the clamping and fixing of the depth detection sensor pins and the metal wire to be spot welded. This not only can accurately lock the pin position of the depth detection sensor, but also ensure that the metal wire to be spot welded is in an ideal welding posture, effectively avoiding offset and dislocation during welding, and greatly improving the welding quality and yield rate.

[0023] 2. The spot welding device for manufacturing the depth detection sensor with stable clamping is provided with an air outlet structure and a heat dissipation structure. When the first electrode connecting rod and the second electrode connecting rod move toward each other until the spot welding process of the pins of the depth detection sensor is completed, the electric push rod contracts, so that the first driving plate drives the mounting frame to move close to the ground, and the cross plate releases the tight fit with the placement base. At this time, under the elastic force of the spring, the sealing gasket moves away from the bottom end of the mounting sleeve, so that the air at the top end of the mounting sleeve enters the air outlet pipe through the connecting pipe under the squeezing action of the sealing plate and the sealing gasket, and then is ejected through the air outlet pipe, so as to dissipate heat and cool the top of the second electrode connecting rod, which has just been spot welded. Rapid cooling helps to reduce the thermal stress generated during welding, thereby reducing the risk of welding deformation, and can also reduce pores and inclusions in the weld, improve the density and strength of the weld, and further ensure the quality of the processed depth detection sensor.

[0024] 3. The spot welding device for manufacturing the stable clamping depth detection sensor is provided with a baffle. When the sealing plate moves inside the mounting sleeve, the baffle can limit the sealing gasket to a certain extent, thereby preventing the sealing gasket from contacting the top of the inner wall of the mounting sleeve, thereby preventing the sealing gasket from forming a sealed state with the top of the mounting sleeve, making it difficult for outside air to enter the top of the mounting sleeve, thereby avoiding the situation where the sealing plate and the sealing gasket are difficult to slide inside the mounting sleeve, thereby ensuring that the spot welding device can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional view of a spot welding device for manufacturing a depth detection sensor with stable clamping proposed by the present invention;

[0026] Figure 2 It is a view of the electric push rod, the first driving plate, the limiting structure, the connecting structure and the second electrode connecting rod connecting structure of the present invention;

[0027] Figure 3 It is a view of the limiting structure, the connecting structure, the placement base, the second electrode connecting rod and the air outlet structure connecting structure of the present invention;

[0028] Figure 4 It is a view of the driving structure, the limiting structure, the connecting structure, the connecting pipe and the air outlet pipe connecting structure of the present invention;

[0029] Figure 5 A view of the connection structure of the installation sleeve, the connection column, the horizontal plate, the connecting pipe and the air outlet pipe of the present invention;

[0030] Figure 6 A view of the connection structure of the mounting frame, the second driving plate, the movable frame, the first limiting frame and the second limiting frame of the present invention;

[0031] Figure 7 A view showing the cross-distribution of the first limiting frame and the second limiting frame of the present invention;

[0032] Figure 8 A view of the connection structure of the installation sleeve, the connecting pipe, the air outlet pipe and the installation plate of the present invention;

[0033] Fig. 9 For the present invention Figure 8 A magnified view of .

[0034] In the figure: 1. spot welding machine body; 101. first electrode connecting rod; 102. second electrode connecting rod; 2. driving structure; 201. electric push rod; 202. first driving plate; 3. limiting structure; 301. mounting frame; 302. second driving plate; 303. movable frame; 304. first limiting frame; 305. second limiting frame; 4. connecting structure; 401. mounting sleeve; 402. connecting column; 403. horizontal plate; 5. placing base; 6. air outlet structure; 601. mounting plate; 602. air outlet pipe; 603. connecting pipe; 7. heat dissipation structure; 701. sealing plate; 702. sealing pad; 703. spring; 8. baffle. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example 1: Reference Figure 1-Figure 8 A spot welding device for manufacturing a depth detection sensor with stable clamping includes a spot welding machine body 1, and a first electrode connecting rod 101 and a second electrode connecting rod 102 installed on the spot welding machine body 1. The spot welding machine body 1 is provided with a driving structure 2, and the driving structure 2 is provided with a limiting structure 3 for clamping the pins of the depth detection sensor. The limiting structure 3 is provided with a connecting structure 4, and the connecting structure 4 guides the limiting structure 3. An air outlet structure 6 is installed on the second electrode connecting rod 102, and a heat dissipation structure 7 is provided inside the connecting structure 4. The air outlet structure 6 and the heat dissipation structure 7 cooperate with each other to cool the pins of the depth detection sensor after spot welding.

[0038] The driving structure 2 includes an electric push rod 201 installed on the spot welding machine body 1, and the top of the movable rod of the electric push rod 201 is fixedly connected to the first driving plate 202. The limiting structure 3 includes two groups of mounting frames 301 respectively fixedly connected to the two sides of the first driving plate 202, and the two mounting frames 301 of the same group are both rotatably connected to the second driving plate 302, and the end of the second driving plate 302 away from the mounting frame 301 is rotatably connected to the movable frame 303, and the two movable frames 303 located at the top of the same group of mounting frames 301 are respectively fixedly connected to the first limiting frame 304 and the second limiting frame 305;

[0039] The connection structure 4 includes a mounting sleeve 401 fixedly connected to the same group of two mounting frames 301, a connecting column 402 is slidably connected inside the mounting sleeve 401, a cross plate 403 is fixedly connected to the top of the connecting column 402, and the movable frame 303 is slidably connected inside the adjacent cross plate 403.

[0040] In the present invention, the top of the second electrode connecting rod 102 is fixedly connected with a placement base 5, and the two horizontal plates 403 are both located at the bottom of the placement base 5, and when the two horizontal plates 403 move away from the ground, they will contact the placement base 5, so that the mounting frame 301 can move close to the horizontal plate 403, and a plurality of slide grooves are provided on the placement base 5. By providing the placement base 5, when the operator places the pins of the depth detection sensor and the metal wire to be welded on the top of the second electrode connecting rod 102 and inside the placement base 5, the placement base 5 can provide a certain support and limiting effect on the pins of the depth detection sensor and the metal wire to be spot welded, thereby preliminarily ensuring the quality of the spot welding of the depth detection sensor, and when the mounting frame 301 drives the horizontal plate 403 to move away from the ground, the placement base 5 can intercept the horizontal plate 403, so that the mounting frame 301 can move close to the horizontal plate 403. Movement, so that the movable frame 303 can push the first limit frame 304 and the second limit frame 305 to move closer to each other, ensuring that the first limit frame 304 and the second limit frame 305 can clamp and fix the depth detection sensor pins placed on the surface of the base 5 and the metal wire to be spot welded, so that the two are unlikely to offset during spot welding, thereby ensuring the quality of the depth detection sensor processed by spot welding, and by arranging a plurality of slide grooves on the surface of the base 5, the wedge blocks fixedly connected on the first limit frame 304 and the second limit frame 305 can move closer to each other until they are tightly fitted with the pins of the depth detection sensor and the metal wire to be spot welded, which can not only accurately lock the pin position of the depth detection sensor, but also ensure that the metal wire to be spot welded is in an ideal welding posture, effectively avoiding offset and dislocation during welding, and greatly improving welding quality and yield rate.

[0041] In the present invention, the shape between the two second drive plates 302 located at the top of the same group of mounting frames 301 is set to an eight-shaped shape. When the mounting frame 301 moves close to the horizontal plate 403, the two second drive plates 302 push the first limit frame 304 and the second limit frame 305 to move close to each other through the two movable frames 303. By setting the shape between the two second drive plates 302 located at the top of the same group of mounting frames 301 to an eight-shaped shape, when the mounting frame 301 moves close to the horizontal plate 403, the second drive plates 302 can push the first limit frame 304 and the second limit frame 305 to move close to each other through the two movable frames 303, thereby ensuring that the first limit frame 304 and the second limit frame 305 can clamp and fix the pins of the depth detection sensor and the metal wire to be spot welded.

[0042] In the present invention, both the first limit frame 304 and the second limit frame 305 are provided with wedge blocks for limiting and fixing the depth detection sensor, and the wedge blocks fixedly connected on the first limit frame 304 and the second limit frame 305 are in a cross-distribution design. By providing the first limit frame 304 and the second limit frame 305 with wedge blocks fixedly connected, and the wedge blocks on the first limit frame 304 and the second limit frame 305 are in a cross-distribution design, it is avoided that the wedge blocks fixedly connected on the first limit frame 304 and the second limit frame 305 hinder each other, thereby ensuring that the first limit frame 304 and the second limit frame 305 can clamp and fix the pins of the depth detection sensor and the metal wire to be spot welded.

[0043] Example 2: Reference Figure 1-Figure 9 A spot welding device for manufacturing a depth detection sensor with stable clamping includes a spot welding machine body 1, and a first electrode connecting rod 101 and a second electrode connecting rod 102 installed on the spot welding machine body 1. The spot welding machine body 1 is provided with a driving structure 2, and the driving structure 2 is provided with a limiting structure 3 for clamping the pins of the depth detection sensor. The limiting structure 3 is provided with a connecting structure 4, and the connecting structure 4 guides the limiting structure 3. An air outlet structure 6 is installed on the second electrode connecting rod 102, and a heat dissipation structure 7 is provided inside the connecting structure 4. The air outlet structure 6 and the heat dissipation structure 7 cooperate with each other to cool the pins of the depth detection sensor after spot welding.

[0044] The driving structure 2 includes an electric push rod 201 installed on the spot welding machine body 1, and the top of the movable rod of the electric push rod 201 is fixedly connected to the first driving plate 202. The limiting structure 3 includes two groups of mounting frames 301 respectively fixedly connected to the two sides of the first driving plate 202, and the two mounting frames 301 of the same group are both rotatably connected to the second driving plate 302, and the end of the second driving plate 302 away from the mounting frame 301 is rotatably connected to the movable frame 303, and the two movable frames 303 located at the top of the same group of mounting frames 301 are respectively fixedly connected to the first limiting frame 304 and the second limiting frame 305;

[0045] The connection structure 4 includes a mounting sleeve 401 fixedly connected to the same group of two mounting frames 301, a connecting column 402 is slidably connected inside the mounting sleeve 401, a cross plate 403 is fixedly connected to the top of the connecting column 402, and the movable frame 303 is slidably connected inside the adjacent cross plate 403.

[0046] In the present invention, the air outlet structure 6 includes a mounting plate 601 fixedly connected to the side of the second electrode connecting rod 102, and an air outlet pipe 602 is fixedly connected to the top of the mounting plate 601. The shape of the air outlet pipe 602 is set to be V-shaped, and the air outlet of the air outlet pipe 602 is aligned with the top of the second electrode connecting rod 102. A connecting pipe 603 is set at the bottom of the air outlet pipe 602, and the connecting pipe 603 is set to be a three-way pipe. The air outlet of the connecting pipe 603 is connected to the air inlet of the air outlet pipe 602, and the two air inlets of the connecting pipe 603 are respectively connected to The two mounting sleeves 401 are interconnected, and the heat dissipation structure 7 includes a sealing plate 701 fixedly connected to the bottom of the connecting column 402, a sealing gasket 702 is fixedly connected to the top of the sealing plate 701, and the sealing gasket 702 is in contact with the inner wall of the mounting sleeve 401, and a spring 703 is fixedly connected to the bottom of the sealing plate 701. A vent hole is provided at the bottom end of the mounting sleeve 401, and one end of the spring 703 away from the sealing plate 701 is fixedly connected to the mounting sleeve 401. The spring 703 is located inside the mounting sleeve 401, and the air outlet structure is provided. Structure 6 and heat dissipation structure 7, when the first electrode connecting rod 101 and the second electrode connecting rod 102 move closer to each other until the pins of the depth detection sensor are spot-welded, the electric push rod 201 contracts, so that the first driving plate 202 drives the mounting frame 301 to move closer to the ground, and the cross plate 403 releases the close fit with the placement base 5. At this time, under the elastic force of the spring 703, the sealing gasket 702 moves away from the bottom end of the mounting sleeve 401, so that the air at the top of the mounting sleeve 401, under the extrusion of the sealing plate 701 and the sealing gasket 702, enters the inside of the air outlet pipe 602 through the connecting pipe 603, and then sprays out through the air outlet pipe 602, so as to perform heat dissipation and cooling treatment on the top of the second electrode connecting rod 102, which has just been spot-welded. Rapid cooling helps to reduce the thermal stress generated during welding, thereby reducing the risk of welding deformation, and can also reduce pores and inclusions in the weld, improve the density and strength of the weld, and further ensure the quality of the processed depth detection sensor.

[0047] In the present invention, a baffle 8 is fixedly connected to the inside of the mounting sleeve 401. The shape of the baffle 8 is set to be a circular ring shape, and the connecting column 402 passes through the baffle 8. The baffle 8 is located at the bottom of the air inlet of the connecting pipe 603. By setting the baffle 8, when the sealing plate 701 moves inside the mounting sleeve 401, the baffle 8 can play a certain limiting role on the sealing gasket 702, thereby preventing the sealing gasket 702 from contacting the top of the inner wall of the mounting sleeve 401, thereby preventing the sealing gasket 702 from forming a sealed state with the top of the mounting sleeve 401, making it difficult for outside air to enter the top of the mounting sleeve 401, thereby avoiding the situation where the sealing plate 701 and the sealing gasket 702 are difficult to slide inside the mounting sleeve 401, thereby ensuring that the spot welding device can work normally.

[0048] Working principle: When the operator uses the spot welding device to spot weld the pins of the depth detection sensor, the pins of the depth detection sensor and the metal wire to be welded are placed inside the second electrode connecting rod 102 and the placement base 5, the electric push rod 201 is extended, and the movable rod of the electric push rod 201 drives the mounting frame 301 to move away from the ground through the first driving plate 202. The mounting frame 301 first drives the first limiting frame 304 and the second limiting frame 305 to move away from the ground through the cross plate 403 until the first limiting frame 304 and the second limiting frame 305 are raised to the top of the placement base 5. When the cross plate 403 contacts the placement base 5, as the mounting frame 301 continues to move close to the cross plate 403 The connecting column 402 pushes the sealing plate 701 to move inside the mounting sleeve 401 close to the bottom of the mounting sleeve 401, and the sealing plate 701 squeezes the spring 703. At this time, the second driving plate 302 pushes the first limiting frame 304 and the second limiting frame 305 to move close to each other through the movable frame 303. When the wedge blocks on the surfaces of the first limiting frame 304 and the second limiting frame 305 cross, they cooperate with the placement base 5 to complete the clamping and fixing of the depth detection sensor pins and the metal wire to be spot welded. At this time, the first electrode connecting rod 101 descends until it cooperates with the second electrode connecting rod 102 to complete the spot welding of the depth detection sensor pins and the metal wire.

[0049] When the spot welding is completed, the electric push rod 201 contracts, so that the movable rod of the electric push rod 201 drives the mounting frame 301 to move closer to the ground through the first driving plate 202, and the cross plate 403 is released from the close fitting state with the placement base 5. At this time, under the elastic force of the spring 703, the sealing gasket 702 moves away from the bottom end of the mounting sleeve 401, so that the air at the top end of the mounting sleeve 401, under the squeezing action of the sealing plate 701 and the sealing gasket 702, enters the inside of the air outlet pipe 602 through the connecting pipe 603, and then is ejected through the air outlet pipe 602, thereby At the top of the pole connecting rod 102, the position just after the spot welding process is subjected to heat dissipation cooling treatment. When the distance between the mounting frame 301 and the horizontal plate 403 moves to the farthest, the two movable frames 303 automatically drive the first limit frame 304 and the second limit frame 305 to move away from each other, so that the distance between the first limit frame 304 and the second limit frame 305 is also automatically moved to the farthest. As the mounting frame 301 continues to move close to the ground, the mounting frame 301 drives the first limit frame 304 and the second limit frame 305 to descend to the bottom of the placement base 5 through the horizontal plate 403 and the movable frame 303.

[0050] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spot welding device for manufacturing a depth detection sensor with stable clamping, comprising a spot welding machine body (1), and a first electrode connecting rod (101) and a second electrode connecting rod (102) mounted on the spot welding machine body (1), characterized in that: The spot welding machine body (1) is provided with a driving structure (2), the driving structure (2) is provided with a limiting structure (3) for clamping the pins of the depth detection sensor, the limiting structure (3) is provided with a connecting structure (4), the connecting structure (4) guides the limiting structure (3), the second electrode connecting rod (102) is provided with an air outlet structure (6), the connecting structure (4) is provided with a heat dissipation structure (7) inside, the air outlet structure (6) and the heat dissipation structure (7) cooperate with each other to cool the pins of the depth detection sensor after the spot welding process; The driving structure (2) comprises an electric push rod (201) mounted on a spot welding machine body (1); the top of a movable rod of the electric push rod (201) is fixedly connected to a first driving plate (202); the limiting structure (3) comprises two groups of mounting frames (301) respectively fixedly connected to two sides of the first driving plate (202); the two mounting frames (301) of the same group are both rotatably connected to a second driving plate (302); one end of the second driving plate (302) away from the mounting frame (301) is rotatably connected to a movable frame (303); and the two movable frames (303) located at the top of the same group of mounting frames (301) are respectively fixedly connected to a first limiting frame (304) and a second limiting frame (305); The connection structure (4) comprises a mounting sleeve (401) fixedly connected to two mounting frames (301) of the same group, a connecting column (402) being slidably connected inside the mounting sleeve (401), a cross plate (403) being fixedly connected to the top of the connecting column (402), and the movable frame (303) being slidably connected inside the adjacent cross plate (403); The top of the second electrode connecting rod (102) is fixedly connected to a placement base (5), the two horizontal plates (403) are both located at the bottom of the placement base (5), and when the two horizontal plates (403) move away from the ground, they will contact the placement base (5), so that the mounting frame (301) can move closer to the horizontal plate (403), and the placement base (5) is provided with a plurality of sliding grooves; The shape between the two second drive plates (302) located at the top of both sides of the same group of mounting frames (301) is set to be an eight-shaped shape, and when the mounting frame (301) moves close to the horizontal plate (403), the top ends of the two second drive plates (302) are close to each other, and then the two movable frames (303) push the first limiting frame (304) and the second limiting frame (305) to move close to each other; The first limiting frame (304) and the second limiting frame (305) are both provided with wedge blocks for limiting and fixing the depth detection sensor, and the wedge blocks fixedly connected to the first limiting frame (304) and the second limiting frame (305) are in a cross-distribution design; A plurality of slide grooves are arranged on the surface of the placement base (5), so that the wedge blocks fixedly connected on the first limit frame (304) and the second limit frame (305) can move towards each other until the wedge blocks are tightly fitted with the pins of the depth detection sensor and the metal wire to be spot welded, thereby avoiding deviation and misalignment during the welding process.

2. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 1, characterized in that: The air outlet structure (6) comprises a mounting plate (601) fixedly connected to the side of the second electrode connecting rod (102); an air outlet pipe (602) is fixedly connected to the top of the mounting plate (601); the shape of the air outlet pipe (602) is set to be V-shaped, and the air outlet of the air outlet pipe (602) is aligned with the top of the second electrode connecting rod (102).

3. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 2, characterized in that: A connecting pipe (603) is provided at the bottom of the air outlet pipe (602), and the connecting pipe (603) is configured as a three-way pipe.

4. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 3, characterized in that: The air outlet of the connecting pipe (603) is connected to the air inlet of the air outlet pipe (602), and the two air inlets of the connecting pipe (603) are respectively connected to the two installation sleeves (401).

5. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 4, characterized in that: A baffle (8) is fixedly connected inside the mounting sleeve (401), the baffle (8) is configured to be in the shape of a circular ring, and the connecting column (402) passes through the baffle (8), and the baffle (8) is located at the bottom of the air inlet of the connecting pipe (603).

6. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 5, characterized in that: The heat dissipation structure (7) comprises a sealing plate (701) fixedly connected to the bottom of the connecting column (402), a sealing gasket (702) fixedly connected to the top of the sealing plate (701), the sealing gasket (702) fits against the inner wall of the mounting sleeve (401), a spring (703) fixedly connected to the bottom of the sealing plate (701), and a vent hole is provided at the bottom end of the mounting sleeve (401).

7. A spot welding device for manufacturing a depth detection sensor with stable clamping according to claim 6, characterized in that: One end of the spring (703) away from the sealing plate (701) is fixedly connected to the mounting sleeve (401), and the spring (703) is located inside the mounting sleeve (401).

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