Welding device

Abstract

The utility model discloses a welding device. The device comprises a rack, a welding table arranged on the rack and a spot welding machine. The spot welding machine comprises a fixing frame, a longitudinal sliding rail, a sliding seat, a linear driving piece, an upper electrode and a lower electrode. The fixing frame is installed on one side of the silver point pushing assembly, the longitudinal sliding rail is vertically installed on the fixing frame, and the sliding base is slidably connected to the longitudinal sliding rail. The linear driving part is fixed to the fixing frame, and an output shaft of the linear driving part is connected with the sliding base and drives the sliding base and the upper electrode to vertically move along the longitudinal sliding rail, so that the upper electrode and the lower electrode located at the preset welding position of the welding table press a silver point and a workpiece under set pressure, and a welding current loop is formed. According to the welding device, the position of the upper electrode in the X and Y vertical directions in the horizontal plane is flexible and adjustable, the limitation that the electrode position of a traditional welding device is fixed and cannot be adjusted and the adaptability is poor is effectively overcome, and the welding device is remarkably superior to existing welding equipment especially in the field of silver spot welding.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric component manufacturing, especially relates to a welding device. BACKGROUND

[0002] Silver point as an important electric contact material is widely used in various switches, relays, circuit breakers and other electrical products. In the manufacturing process of electrical components, it is often necessary to accurately and reliably weld silver points on the specific position of the metal substrate (i.e. workpiece) to ensure good electrical conductivity and mechanical connection strength.

[0003] At present, the welding of silver points is mainly completed by electric welding machines (such as spot welding machines). The traditional welding device usually includes a fixedly installed spot welding machine and a welding table. The spot welding machine is generally equipped with fixed upper and lower electrodes, and the upper electrode is driven to press down by a pneumatic cylinder or a hydraulic cylinder, so that the silver point and the workpiece are in contact under the set pressure, and a large current is passed to melt the contact surface instantaneously to form a welding point. However, the existing technology has a significant limitation: the welding position is fixed and cannot be adjusted, which seriously restricts the versatility and production efficiency of the welding device, especially in small-batch, multi-variety or flexible production scenarios requiring welding position. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of the prior art and providing a welding device.

[0005] To achieve the above object, the utility model provides a kind of welding device, including rack, and the rack is equipped with welding table and spot welder, and the spot welder includes: fixed frame, installation in welding table one side;Longitudinal slide rail, vertical installation in fixed frame;Slide, slidingly connected to longitudinal slide rail;Linear drive, fixed on fixed frame and output shaft connection slide, for driving slide reciprocating along longitudinal slide rail;Upper electrode, setting in the lower end of slide;Lower electrode, at the predetermined welding position of welding table;Wherein, the linear drive drives the vertical motion of upper electrode, so that upper electrode and lower electrode are pressed together under the set pressure silver point and workpiece form welding current loop;The slide includes: fixed seat, with the output shaft connection of linear drive;First adjusting seat and fixed seat slidingly connected, realize displacement along X axis direction;Second adjusting seat and first adjusting seat slidingly connected, realize displacement along Y axis direction;Insulating backing plate, fixed in the bottom of second adjusting seat;Upper electrode mounting plate, fixed in the bottom of insulating backing plate and install the upper electrode;Lower electrode mounting plate, at the welding table and install the lower electrode;Wherein, the upper electrode, lower electrode, upper electrode mounting plate, lower electrode mounting plate are made of copper or copper alloy material;Wherein, the upper electrode and lower electrode inside are equipped with independent electrode cooling flow channel, and are equipped with electrode cooling liquid inlet and electrode cooling liquid outlet communicated with it respectively;Wherein, the upper electrode mounting plate and lower electrode mounting plate inside are equipped with independent mounting plate cooling flow channel, and are equipped with mounting plate cooling liquid inlet and mounting plate cooling liquid outlet communicated with it respectively.

[0006] As a preferred technical scheme of the utility model, the linear drive is electric cylinder, and the output shaft end portion is slidingly limited in the mounting cavity of slide;The mounting cavity is equipped with pressure sensor and compression spring, the pressure sensor is fixed in the bottom of mounting cavity, and the lower end of compression spring abuts against pressure sensor, and the upper end abuts against output shaft end portion.

[0007] As a preferred technical scheme of the utility model, the linear drive is configured as air cylinder, and the output shaft of air cylinder is connected with slide, and the air inlet channel of air cylinder is equipped with pressure regulating valve for adjusting air inlet amount.

[0008] As a preferred technical scheme of the utility model, the first adjusting seat is slidingly connected with fixed seat through first horizontal slide rail assembly, and the first horizontal slide rail assembly includes: first dovetail block at the bottom of fixed seat, first dovetail groove at the top of first adjusting seat, and sliding pair is formed with first dovetail block;The lower end of fixed seat is fixed with first connecting seat, which is embedded in the first movable groove of first adjusting seat, and the sidewall of first adjusting seat is screwed with first adjusting bolt, and first adjusting bolt is threadedly matched with first connecting seat transmission.

[0009] As a preferred technical scheme of the utility model, the second adjusting seat is slidably connected with the first adjusting seat through a second horizontal sliding rail assembly, the second horizontal sliding rail assembly comprises: a second dovetail groove arranged at the bottom of the first adjusting seat, a second dovetail block arranged at the top of the second adjusting seat, and a sliding pair formed by the second dovetail groove and the second dovetail block; a second connecting seat is fixedly arranged at the top of the second adjusting seat and embedded in a second movable groove of the first adjusting seat, and a second adjusting bolt is screwed on the side wall of the first adjusting seat and threadedly cooperates with the second connecting seat for transmission.

[0010] As a preferred technical scheme of the utility model, the rack is provided with a silver point vibrating disc and a silver point conveying track, a first end of the silver point conveying track is connected with a discharge port of the silver point vibrating disc to receive silver points, a silver point pushing assembly is arranged on one side of a second end of the silver point conveying track, and a welding table is arranged on the other side.

[0011] As a preferred technical scheme of the utility model, the second end of the silver point conveying track is provided with a positioning table, the silver point pushing assembly and the welding table are oppositely arranged on two sides of the positioning table, the pushing assembly comprises a pushing plate and a pushing driving member, the pushing direction of the pushing plate is perpendicular to the conveying direction of the conveying track, and the pushing plate can extend into the positioning table to push the silver points to the predetermined welding position of the welding table.

[0012] As a preferred technical scheme of the utility model, the upper surface of the welding table is provided with a positioning groove, a positioning plate is detachably arranged in the positioning groove, one side of the positioning plate facing the silver point pushing assembly is provided with a silver point limiting groove, and the contour of the silver point limiting groove matches the shape of the silver point.

[0013] As a preferred technical scheme of the utility model, the welding table is provided with a feeding port communicated with the positioning groove, and the positioning groove is located on the feeding track of the feeding port.

[0014] As a preferred technical scheme of the utility model, one side of the silver point vibrating disc is provided with a camera support, and a visual detection module for collecting and identifying the front and back surfaces of the silver point is arranged on the camera support.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. Through the sliding connection design of the first adjusting seat (X-axis direction) and the second adjusting seat (Y-axis direction), the position of the upper electrode in the horizontal plane is realized fine, continuous and two-way adjustable. This completely overcomes the fatal defect of the fixed position of the upper electrode in the traditional device. When the workpiece of different size specifications needs to be welded, or the preset welding position of the silver point on the workpiece changes, the operator does not need to reposition the workpiece, only needs to simply adjust the position of the first adjusting seat and / or the second adjusting seat, and the upper electrode can be quickly and accurately aligned with the new welding point, which significantly enhances the adaptability of the equipment to different products and different welding process requirements.

[0017] 2. Through the cooperative innovation structure of the silver point vibrating disc-conveying track-feeding assembly-spot welding machine, the silver point is accurately conveyed to the predetermined welding position and welded with the workpiece, the manual transplanting silver point link is eliminated, and the manual placement deviation rate is completely solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the whole machine of the utility model;

[0019] Figure 2 is a structural schematic diagram of the utility model without the rack;

[0020] Figure 3 is a structural schematic diagram of the utility model without the rack;

[0021] Figure 4 is Figure 3 is an enlarged view of the local part A;

[0022] Figure 5 is a sectional view of the linear driving part as an electric cylinder in the welding device of the utility model.

[0023] Figure 6 is a structural schematic diagram of the linear driving part as a gas cylinder in the welding device of the utility model;

[0024] Figure 7 is an exploded view of the sliding seat in the utility model;

[0025] Figure 8 is a structural schematic diagram of the top part of the first adjusting seat in the utility model;

[0026] Figure 9 is a structural schematic diagram of the bottom part of the first adjusting seat in the utility model;

[0027] Figure 10 is a sectional view of the upper and lower electrode mounting plates of the utility model;

[0028] Figure 11 is a sectional view of the upper and lower electrodes of the utility model.

[0029] Mark No. : 1, rack; 2, silver point vibrating disc; 3, silver point conveying track; 4, silver point pushing assembly; 5, welding table; 6, predetermined welding position; 7, spot welding machine; 8, positioning table; 9, pushing plate; 10, positioning groove; 11, silver point limiting groove; 12, feeding port; 13, fixing frame; 14, longitudinal slide rail; 15, slide; 16, linear driving piece; 17, upper electrode; 18, lower electrode; 19, mounting cavity; 20, pressure sensor; 21, compression spring; 22, pressure regulating valve; 23, fixed seat; 24, first adjusting seat; 25, second adjusting seat; 26, first dovetail block; 27, first dovetail groove; 28, second dovetail block; 29, second dovetail groove; 30, first movable groove; 31, second movable groove; 32, first connecting seat; 33, second connecting seat; 34, first adjusting bolt; 35, second adjusting bolt; 36, camera support; 37, exhaust hood; 38, dispenser; 39, needle cylinder; 40, blanking port; 41, blanking track; 42, discharge port; 43, positioning plate; 44, insulating pad plate; 45, upper electrode mounting plate; 46, lower electrode mounting plate; 47, electrode cooling flow channel; 48, electrode cooling liquid inlet; 49, electrode cooling liquid outlet; 50, mounting plate cooling flow channel; 51, mounting plate cooling liquid inlet; 52, mounting plate cooling liquid outlet. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0031] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0032] As Figures 1-11The welding device shown includes a rack 1, a silver dot vibrating disc 2 arranged on the rack 1, and a silver dot conveying track 3, the first end of the silver dot conveying track 3 is connected with the discharge port 42 of the silver dot vibrating disc 2 to receive silver dots; the second end of the silver dot conveying track 3 is provided with a silver dot pushing assembly 4 on one side and a welding table 5 on the other side; the silver dot pushing assembly 4 is used to push the silver dots at the second end to the predetermined welding position 6 on the welding table 5; the welding table 5 is provided with a spot welder 7 for welding the silver dots on the workpiece. In the embodiment, the silver dot pushing assembly 4 is provided with an exhaust hood 37 on one side, and the inside of the rack 1 is provided with an air extraction mechanism (which is prior art and is not the focus of the present application, so it is not specifically described), which is started during the silver dot welding process, and the harmful smoke generated during the silver dot welding process can be extracted from the working area through the exhaust hood 37, so as to avoid the workers from inhaling into the nose when manually placing the workpiece. In the embodiment, the rack 1 is provided with a glue dispenser 38 and a needle cylinder 39, which are connected by a hose (not shown in the figure), and in the silver dot welding process, the flux (solder paste) needs to be accurately applied to the workpiece welding position before welding to completely eliminate the virtual welding caused by the lack of solder paste; the rack 1 is further provided with a material falling port 40 and a material falling track 41 connected with the material falling port 40 on one side of the adjacent welding table 5, and the material falling track 41 is provided with a discharge port 42 on the side relatively far away from the material falling port 40, which is convenient for recycling the welding finished product.

[0033] Through the cooperative innovation structure of the silver dot vibrating disc 2-conveying track-pushing assembly-spot welder 7, the silver dot is accurately conveyed to the predetermined welding position 6 and welded with the workpiece, the artificial transplanting silver dot link is eliminated, and the artificial placing deviation rate is completely solved.

[0034] The second end of the silver dot conveying track 3 is provided with a positioning table 8, and the silver dot pushing assembly 4 and the welding table 5 are arranged on the two sides of the positioning table 8, the pushing assembly includes a pushing plate 9 and a pushing driving member, the pushing direction of the pushing plate 9 is perpendicular to the conveying direction of the conveying track, and the pushing plate 9 can extend into the positioning table 8 to push the silver dot to the predetermined welding position 6 of the welding table 5, and in the embodiment, the pushing driving member adopts an electric cylinder, an air cylinder or a hydraulic cylinder.

[0035] The upper surface of the welding table 5 is provided with a positioning groove 10, and a positioning plate 43 is detachably arranged in the positioning groove 10, one side of the positioning plate 43 towards the silver dot pushing assembly 4 is provided with a silver dot limiting groove 11, and the profile of the silver dot limiting groove 11 matches the shape of the silver dot. A feeding port 12 is formed in the welding table 5 and communicates with the positioning groove 10, and the positioning groove 10 is located on the feeding track of the feeding port 12.

[0036] The spot welding machine 7 includes: a fixed frame 13, which is installed on one side of the welding table 5; a longitudinal slide rail 14, which is vertically fixed to the fixed frame 13; a slide 15, which is slidably connected to the longitudinal slide rail 14; a linear drive member 16, which is fixed on the fixed frame 13 and the output shaft is connected to the slide 15, and is used to drive the slide 15 to move back and forth along the longitudinal slide rail 14; an upper electrode 17, which is arranged at the lower end of the slide 15; a lower electrode 18, which is located at a predetermined welding position 6 of the welding table 5; wherein the linear drive member 16 drives the upper electrode 17 to move vertically, so that the upper electrode 17 and the lower electrode 18 press the silver point and the workpiece under a set pressure to form a welding current circuit. In this embodiment, the lower electrode 18 is located directly below the silver point limit groove 11, which can provide support for the silver point.

[0037] The linear drive member 16 is an electric cylinder, and the sliding limit of the output shaft end thereof is located in the mounting cavity 19 of the slide 15; a pressure sensor 20 and a compression spring 21 are provided in the mounting cavity 19, and the pressure sensor 20 is fixed at the bottom of the mounting cavity 19. The lower end of the compression spring 21 abuts the pressure sensor 20, and the upper end abuts the output shaft end, which is used to control the contact pressure of the upper and lower electrodes 18. The compression spring 21 is squeezed during the downward pressure of the electric cylinder (the compression amount of the compression spring 21 gradually increases when the upper electrode 17 contacts the workpiece). When the pressure value of the pressure sensor 20 reaches the preset value, the electric cylinder stops working. This application does not involve improvements in circuit control, so it is not elaborated in detail. The pressure sensor 20 is a commercially available electronic component.

[0038] The linear drive member 16 is configured as a cylinder and the output shaft of the cylinder is connected to the slide 15. A pressure regulating valve 22 for adjusting the intake volume is provided on the air inlet channel of the cylinder. The cylinder output pressure is controlled by the pressure regulating valve 22 to maintain a constant air pressure drive during the electrode pressing process.

[0039] The sliding seat 15 comprises: a fixed seat 23 connected with the output shaft of the linear driving member 16; a first adjusting seat 24 slidably connected with the fixed seat 23 through a first horizontal sliding rail assembly to realize displacement along the X-axis direction; a second adjusting seat 25 slidably connected with the first adjusting seat 24 through a second horizontal sliding rail assembly to realize displacement along the Y-axis direction; the upper electrode 17 is fixedly arranged at the bottom of the second adjusting seat 25; wherein the X-axis and the Y-axis are perpendicular to each other in the horizontal plane, and the X-axis is parallel to the pushing direction of the silver dot pushing assembly 4; an insulating pad 44 is fixedly arranged at the bottom of the second adjusting seat 25; an upper electrode mounting plate 45 is fixedly arranged at the bottom of the insulating pad 44 and is provided with the upper electrode 17; a lower electrode mounting plate 46 is located at the welding table 5 and is provided with the lower electrode 18; wherein the upper electrode 17, the lower electrode 18, the upper electrode mounting plate 45 and the lower electrode mounting plate 46 are all made of copper or copper alloy material; wherein the upper electrode 17 and the lower electrode 18 are both provided with independent electrode cooling flow channels 47 and are respectively provided with electrode cooling liquid inlets 48 and electrode cooling liquid outlets 49 which are in communication with the electrode cooling flow channels 47; wherein the upper electrode mounting plate 45 and the lower electrode mounting plate 46 are both provided with independent mounting plate cooling flow channels 50 and are respectively provided with mounting plate cooling liquid inlets 51 and mounting plate cooling liquid outlets 52 which are in communication with the mounting plate cooling flow channels 50; in this embodiment, the positions of the electrode cooling liquid inlet 48 and the electrode cooling liquid outlet 49 can be adjusted, and the positions of the mounting plate cooling liquid inlet 51 and the mounting plate cooling liquid outlet 52 can also be adjusted; the positions are designed according to the actual situation, the pipe connection structure of the electrode cooling flow channel 47 and the mounting plate cooling flow channel 50 is not the focus of this application, which is prior art, and therefore is not specifically described, and can be adjusted according to the actual situation.

[0040] The first horizontal sliding rail assembly comprises a first dovetail block 26 arranged at the bottom of the fixed base 23, a first dovetail groove 27 arranged at the top of the first adjusting base 24, and a sliding pair formed by the first dovetail block 26 and the first dovetail groove 27; the second horizontal sliding rail assembly comprises a second dovetail groove 29 arranged at the bottom of the first adjusting base 24, a second dovetail block 28 arranged at the top of the second adjusting base 25, and a sliding pair formed by the second dovetail groove 29 and the second dovetail block 28; the lower end of the fixed base 23 is fixedly provided with a first connecting base 32, which is embedded in a first movable groove 30 of the first adjusting base 24; a first adjusting bolt 34 is screwed to the side wall of the first adjusting base 24 and threadedly cooperates with the first connecting base 32 for transmission; the top of the second adjusting base 25 is fixedly provided with a second connecting base 33, which is embedded in a second movable groove 31 of the first adjusting base 24; a second adjusting bolt 35 is screwed to the side wall of the first adjusting base 24 and threadedly cooperates with the second connecting base 33 for transmission; it should be noted that the first adjusting bolt 34 and the second adjusting bolt 35 are fixed-point rotating on the first adjusting base 24, and the two connecting bases are respectively provided with threaded holes matched with the adjusting bolts; it should be noted that the sliding pair structure formed by the combination of the dovetail block and the dovetail groove is not the core improvement, and a T-shaped or other geometric shape can also be used to ensure the relative movement between the two components, and the position can be adjusted and then fastened by the bolt alone.

[0041] Through the sliding connection design of the first adjusting base 24 (X-axis direction) and the second adjusting base 25 (Y-axis direction), the position of the upper electrode 17 in the horizontal plane is finely and continuously adjustable in two directions. This completely overcomes the fatal defect of the fixed position of the upper electrode 17 in the traditional device. When welding workpieces of different sizes or the preset welding position of the silver dot on the workpiece changes, the operator does not need to reposition the workpiece, but only needs to simply adjust the position of the first adjusting base 24 and / or the second adjusting base 25, so as to quickly and accurately align the upper electrode 17 with the new welding point, thereby significantly enhancing the adaptability of the equipment to different products and different welding processes. In this embodiment, the position of the lower electrode 18 can be adjusted according to the situation.

[0042] One side of the silver dot vibrating disc 2 is provided with a camera support 36, and a visual detection module (which is commercially available) for collecting and identifying the front and back surfaces of the silver dot is mounted on the camera support 36. The visual detection module is used to judge the front and back surfaces of the silver dot (the front and back surfaces have different colors and textures), so as to avoid welding errors.

[0043] The basic principle, main features and advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A welding device comprising a frame (1), characterized in that: The rack (1) is provided with a welding table (5) and a spot welding machine (7), the spot welding machine (7) comprises: a fixed frame (13) installed on one side of the welding table (5); a longitudinal slide rail (14) vertically installed on the fixed frame (13); a sliding seat (15) slidingly connected to the longitudinal slide rail (14); a linear drive (16) fixed on the fixed frame (13) and having an output shaft connected to the sliding seat (15), used for driving the sliding seat (15) to move back and forth along the longitudinal slide rail (14); an upper electrode (17) arranged at the lower end of the sliding seat (15); and a lower electrode (18) located at a predetermined welding position (6) of the welding table (5); wherein the linear drive (16) drives the upper electrode (17) to move vertically, so that the upper electrode (17) and the lower electrode (18) press together under a set pressure to form a welding current loop with a silver spot and a workpiece; the sliding seat (15) comprises: a fixed seat (23) connected to the output shaft of the linear drive (16); a first adjusting seat (24) slidingly connected to the fixed seat (23) to realize displacement along the X-axis direction; a second adjusting seat (25) slidingly connected to the first adjusting seat (24) to realize displacement along the Y-axis direction; an insulating pad (44) fixedly arranged at the bottom of the second adjusting seat (25); an upper electrode mounting plate (45) fixedly arranged at the bottom of the insulating pad (44) and having the upper electrode (17) mounted thereon; and a lower electrode mounting plate (46) located at the welding table (5) and having the lower electrode (18) mounted thereon; wherein the upper electrode (17), the lower electrode (18), the upper electrode mounting plate (45) and the lower electrode mounting plate (46) are all made of copper or copper alloy material; wherein the upper electrode (17) and the lower electrode (18) are both provided with independent electrode cooling channels (47) inside and are respectively provided with electrode cooling liquid inlets (48) and electrode cooling liquid outlets (49) in communication therewith; and wherein the upper electrode mounting plate (45) and the lower electrode mounting plate (46) are both provided with independent mounting plate cooling channels (50) inside and are respectively provided with mounting plate cooling liquid inlets (51) and mounting plate cooling liquid outlets (52) in communication therewith.

2. The welding device of claim 1, wherein: The linear drive (16) is an electric cylinder, and the output shaft end portion thereof is slidingly limited in a mounting cavity (19) of the sliding seat (15); the mounting cavity (19) is provided with a pressure sensor (20) and a compression spring (21), the pressure sensor (20) is fixed at the bottom of the mounting cavity (19), and the lower end of the compression spring (21) abuts against the pressure sensor (20) and the upper end thereof abuts against the output shaft end portion.

3. The welding device of claim 1, wherein: The linear drive (16) is configured as a gas cylinder, and the output shaft of the gas cylinder is connected to the sliding seat (15), and the gas inlet channel of the gas cylinder is provided with a pressure regulating valve (22) for adjusting the gas inlet amount.

4. The welding device according to any one of claims 1-3, characterized in that: The first adjustment seat (24) is slidably connected to the fixed seat (23) through a first horizontal slide rail assembly, and the first horizontal slide rail assembly includes: a first dovetail block (26) provided at the bottom of the fixed seat (23), a first dovetail groove (27) provided at the top of the first adjustment seat (24), and forming a sliding pair with the first dovetail block (26); a first connecting seat (32) is fixed at the lower end of the fixed seat (23), which is embedded in the first movable groove (30) of the first adjustment seat (24), and a first adjusting bolt (34) is screwed on the side wall of the first adjustment seat (24), and the first adjusting bolt (34) and the first connecting seat (32) are threadedly matched for transmission.

5. The welding device of any one of claims 1-3, wherein: The second adjustment seat (25) is slidably connected to the first adjustment seat (24) through a second horizontal slide rail assembly, and the second horizontal slide rail assembly includes: a second dovetail groove (29) provided at the bottom of the first adjustment seat (24), a second dovetail block (28) provided at the top of the second adjustment seat (25), and forming a sliding pair with the second dovetail groove (29); a second connecting seat (33) is fixed on the top of the second adjustment seat (25), which is embedded in the second movable groove (31) of the first adjustment seat (24), and a second adjusting bolt (35) is screwed on the side wall of the first adjustment seat (24), and the second adjusting bolt (35) and the second connecting seat (33) are threadedly matched for transmission.

6. The welding device of claim 1, wherein: The frame (1) is provided with a silver dot vibration plate (2) and a silver dot conveying track (3), wherein a first end of the silver dot conveying track (3) is connected to a discharge port (42) of the silver dot vibration plate (2) to receive silver dots; a silver dot pushing assembly (4) is provided on one side of a second end of the silver dot conveying track (3), and a welding table (5) is provided on the other side.

7. The welding device of claim 6, wherein: A positioning platform (8) is provided at the second end of the silver dot conveying track (3); the silver dot pushing assembly (4) and the welding platform (5) are relatively arranged on both sides of the positioning platform (8); the pushing assembly includes a pushing plate (9) and a pushing driving member; the pushing direction of the pushing plate (9) is perpendicular to the conveying direction of the conveying track, and the pushing plate (9) can extend into the positioning platform (8) to push the silver dot to a predetermined welding position (6) of the welding platform (5).

8. The welding device according to claim 6 or 7, characterized in that: The upper surface of the welding table (5) is provided with a positioning groove (10), a positioning plate (43) is detachably provided in the positioning groove (10), and a silver point limiting groove (11) is provided on the side of the positioning plate (43) facing the silver point pushing assembly (4), and the contour of the silver point limiting groove (11) matches the shape of the silver point.

9. The welding device of claim 8, wherein: The welding table (5) is provided with a feeding port (12) which is in communication with the positioning groove (10), and the positioning groove (10) is located on the feeding track of the feeding port (12).

10. The welding device of claim 6, wherein: A camera bracket (36) is provided on one side of the silver dot vibration plate (2), and a visual detection module for collecting and identifying the front and back sides of the silver dots is installed on the camera bracket (36).

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