CN219767154U - Welding spot wiping device - Google Patents

Abstract

The utility model discloses a welding spot wiping device which comprises a workbench, a product jig, a support frame and a wiping module, wherein the product jig is arranged on the workbench and is used for installing a product of a welding spot to be wiped, the support frame is provided with a Z-axis sliding module which is used for driving the wiping module to move in the vertical direction, the wiping module comprises a main board, dust-free cloth arranged on the main board, a dust-free cloth retracting mechanism, a dust-free cloth feeding mechanism, a wiping head and a rotating mechanism, the wiping head is abutted against the dust-free cloth, and the rotating mechanism is connected with the wiping head and drives the wiping head to do reciprocating rotation. The utility model drives the wiping head and the dust-free cloth to rotate back and forth together to wipe the welding spots through the rotating mechanism, and has good cleaning effect.

Description

Welding spot wiping device

Technical Field

The utility model relates to the field of circuit board welding, in particular to a welding spot wiping device.

Background

The circuit board is an important electronic component, is a support body of the electronic component, is a carrier for electric connection of the electronic component, is usually soldered on the circuit board by tin soldering, and black carbide, rosin, tin slag and other foreign matters after soldering remain on the surface of the soldered product. The welded foreign matters have the defects of complex components, strong viscosity, large wiping difficulty and the like, and a large amount of manpower is required to be consumed for cleaning in the actual production process, so that the production capacity is seriously affected.

In order to solve the problems in the prior art, a patent document with publication number of CN210358197U discloses an automatic cleaning device for welding spots after FPC welding, comprising a dust-free cloth cleaning assembly; the dust-free cloth cleaning assembly comprises a second adjusting device, a mounting substrate connected with the second adjusting device, a dust-free cloth releasing device, a dust-free cloth tightening device, a second dispensing valve, dust-free cloth clamping devices positioned on two sides of the second dispensing valve and a wiping head arranged at a liquid outlet of the second dispensing valve, wherein the first dispensing valve and the second dispensing valve are respectively connected with a cleaning liquid supply system, and the wiping head is used for propping against the dust-free cloth to wipe and clean welding spots after the second welding of a product. However, in this patent, the second adjusting device drives the wiping head to move in the XYZ axis direction to wipe and clean the welded foreign matter, however, the wiping effect of the spot-shaped welded foreign matter, namely the welding spot, is poor.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a welding spot wiping device, which aims to solve the problem that an automatic welding spot cleaning device in the prior art has poor wiping effect on welding spots.

The technical scheme adopted for solving the technical problems is as follows:

a solder joint wiping device comprising:

a work table;

the product jig is arranged on the workbench and is used for installing products of welding spots to be wiped;

the wiping module comprises a main board, dust-free cloth arranged on the main board, a dust-free cloth collecting and releasing mechanism, a dust-free cloth moving mechanism, a wiping head and a rotating mechanism, wherein the wiping head is abutted against the dust-free cloth, and the rotating mechanism is connected with the wiping head and drives the wiping head to do reciprocating rotation;

the support frame set up in on the workstation, be provided with Z axle slip module on the support frame, Z axle slip module is used for the drive the module of wiping moves in vertical direction.

As a further improvement of the technical scheme, the rotating mechanism comprises a servo motor, the servo motor is arranged on the main board, a shaft sleeve is fixed on the wiping head, and the shaft sleeve is fixedly connected with a main shaft of the servo motor.

As a further improvement of the technical scheme, a wiping head telescopic assembly is arranged between the servo motor and the shaft sleeve, the wiping head telescopic assembly comprises a guide seat and a cylinder, a fixed ring is arranged on a main shaft of the servo motor, the guide seat and the cylinder are fixedly connected to the bottom of the fixed ring, a central hole is arranged on the guide seat, the shaft sleeve is slidably connected to the central hole, a connecting structure is arranged between the cylinder and the shaft sleeve, and the cylinder drives the shaft sleeve to move up and down through the connecting structure.

As a further improvement of the technical scheme, the connecting structure comprises a strip-shaped chute arranged on the guide seat and a connecting hole arranged on the shaft sleeve, wherein the strip-shaped chute is communicated with the central hole, a pushing block is connected to a piston rod of the air cylinder, a pushing rod is fixed on the pushing block, and the pushing rod penetrates through the strip-shaped chute and the connecting hole.

As a further improvement of the technical scheme, a spring seat and a pressure sensor connected with the spring seat are arranged in the central hole, a compression spring is fixedly connected between the spring seat and the shaft sleeve, a limiting groove is formed in the push block, the push rod is located in the limiting groove, and a avoiding space for the push rod to move is reserved in the limiting groove.

As a further improvement of the technical scheme, the bottom of the guide seat is provided with a guide part and a guide cover plate, the guide cover plate is provided with a through hole, dust-free cloth is positioned below the wiping head in a guiding way through the guide part, and the wiping head drives the dust-free cloth to pass through the through hole when moving downwards.

As a further improvement of the above technical solution, the dust-free cloth feeding mechanism includes:

the driving wheel assembly comprises a driving wheel, a cloth feeding motor, a pressing wheel and an elastic pressing rod, belt transmission is adopted between the cloth feeding motor and the driving wheel, one end of the elastic pressing rod is fixed on the main board, the other end of the elastic pressing rod is fixedly connected with the pressing wheel, and the elastic pressing rod drives the pressing wheel to abut against the driving wheel when in a natural state;

the driven wheel assembly comprises a driven wheel and a compression cylinder, wherein a piston rod of the compression cylinder is provided with a compression block, and one side of the compression block, which is close to the driven wheel, is provided with an arc-shaped groove;

the elastic wheel assembly comprises a first elastic wheel structure and a second elastic wheel structure which are identical in structure and are positioned at the left side and the right side of the wiping head, the elastic wheel assembly comprises an elastic wheel, a sliding rail, a sliding block, a fixed block and a return spring, the fixed block and the sliding rail are fixed on the main board, the sliding block is connected to the sliding rail in a sliding manner, the return spring is connected between the sliding block and the fixed block, and the elastic wheel is fixed on the sliding block;

the guide wheel assembly is used for guiding the dust-free cloth and comprises a plurality of guide wheels arranged on the main board.

As a further improvement of the technical scheme, the dust-free cloth collecting and releasing mechanism comprises a discharging wheel and a collecting wheel, and the dust-free cloth sequentially passes through the discharging wheel, the driven wheel, the elastic wheel in the first elastic wheel structure, the guide part, the elastic wheel in the second elastic wheel structure, the driving wheel and the collecting wheel when being distributed.

As a further improvement of the technical scheme, the welding spot wiping device further comprises a liquid adding module, the liquid adding module comprises a liquid storage tank, a guide pipe and a liquid outlet channel, the liquid storage tank is arranged on the workbench, the liquid outlet channel is arranged on the guide seat, the liquid outlet channel is connected with a pipe joint, and two ends of the guide pipe are respectively connected with the pipe joint and the liquid storage tank.

As a further improvement of the technical scheme, the jig assembly line is arranged on the workbench, the product jig is arranged on the jig assembly line, and the wiping module is provided with a plurality of wiping modules which are arranged on the supporting frame in a side-by-side manner.

The beneficial effects of the utility model are as follows: the liquid is led into the liquid adding module (alcohol or other cleaning liquid) on the dust-free cloth, the dust-free cloth is wet, then the spring pushes the wiping head and the dust-free cloth to extend out of the through hole on the guide cover plate together, the wiping head and the dust-free cloth are propped against the welding spot position on a product which is arranged on the product jig and positioned, and the servo motor continuously rotates positively and negatively so as to drive the wiping head and the dust-free cloth to rotate back and forth to wipe the welding spot.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the assembly of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a perspective view of one direction of the wiping module of the utility model;

FIG. 4 is a front view of a wiping module of the utility model;

FIG. 5 is a perspective view of another orientation of the wiping module of the present utility model;

FIG. 6 is a rear view of the wiping module of the utility model;

FIG. 7 is a perspective view of a rotation mechanism in the wiping module of the utility model;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a front view of a rotation mechanism in the wiping module of the utility model;

FIG. 10 is a cross-sectional view A-A of FIG. 9;

FIG. 11 is a right side view of the rotary mechanism in the wiping module of the utility model;

FIG. 12 is a cross-sectional view B-B of FIG. 11;

fig. 13 is an enlarged view at B in fig. 12;

FIG. 14 is a schematic view of the structure of a guide holder in the rotary mechanism of the present utility model;

FIG. 15 is a schematic view of the structure of the wiper head extension and retraction assembly of the present utility model;

fig. 16 is a schematic view of a guide wheel assembly of the present utility model.

Reference numerals: the workbench 1, the support frame 2, the Z-axis sliding module 3, the wiping module 4, the dust-free cloth 40, the main board 41, the dust-free cloth collecting and releasing mechanism 42, the collecting wheel 421, the discharging wheel 422, the dust-free cloth feeding mechanism 43, the driving wheel 431, the pressing wheel 432, the elastic pressing rod 433, the driven wheel 434, the pressing block 435, the pressing cylinder 436, the cloth feeding motor 437, the elastic wheel assembly 44, the fixed block 441, the return spring 442, the slide block 443, the elastic wheel 444, the slide rail 445, the rotating mechanism 45, the servo motor 451, the fixed seat 452, the first half ring 453, the cylinder 454, the push block 455, the limiting groove 4551, the guide seat 456, the guide portion 4561, the strip-shaped slide groove 4562, the second half ring 4563, the guide cover 457, the wiping head 46, the sleeve 461, the push rod 462, the compression spring 463, the spring seat 464, the pressure sensor 465, the guide wheel 47, the jig line 5, the product jig 6, the liquid storage tank 7, the guide pipe 8, the pipe joint 9, the liquid injection control valve 10, and the liquid outlet channel 11.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1 and 2, a welding spot wiping device comprises a workbench 1, a product jig 6, a support frame 2 and a wiping module 4, wherein a jig assembly line 5 is arranged on the workbench 1, the product jig 6 is arranged on the jig assembly line 5 and is used for installing a product of a welding spot to be wiped, the support frame 2 is arranged on the workbench 1, a Z-axis sliding module 3 is arranged on the support frame 2, the Z-axis sliding module 3 is used for driving the wiping module 4 to move in the vertical direction, and the wiping module 4 is provided with a plurality of rows arranged on the support frame 2 so as to wipe the welding spots of a plurality of products simultaneously, thereby improving the working efficiency.

Referring to fig. 3-6, the wiping module 4 includes a main board 41, and a dust-free cloth 40, a dust-free cloth retracting mechanism 42, a dust-free cloth moving mechanism 43, a wiping head 46 and a rotating mechanism 45 which are disposed on the main board 41, wherein the wiping head 46 is abutted against the dust-free cloth 40, the rotating mechanism 45 is connected with the wiping head 46 and drives the wiping head 46 to perform reciprocating rotation movement of back and forth rotation, specifically, the wiping head 46 and the dust-free cloth 40 rotate clockwise for 45 ° and then rotate counterclockwise for 90 ° and then rotate clockwise for 90 °, and the above-mentioned movements are repeated until the cleaning of welding spots is completed.

The dust-free cloth winding and unwinding mechanism 42 comprises a discharging wheel 422 and a collecting wheel 421, a cloth unwinding roll formed by the dust-free cloth 40 is arranged on the discharging wheel 422, the dust-free cloth 40 is connected to the collecting wheel 421 through the dust-free cloth feeding mechanism 43, and the used dust-free cloth 40 is wound.

The dust-free cloth feeding mechanism 43 comprises a driving wheel assembly, a driven wheel assembly, an elastic wheel assembly 44 and a guide wheel assembly, the driving wheel assembly comprises a driving wheel 431, a feeding motor 437, a pressing wheel 432 and an elastic pressing rod 433, one end of the elastic pressing rod 433 is fixed on the main board 41, the other end of the elastic pressing rod 433 is fixedly connected with the pressing wheel 432, the pressing wheel 432 is driven to abut against the driving wheel 431 when the elastic pressing rod 433 is in a natural state, the pressing wheel 432 presses the dust-free cloth 40 on the driving wheel 431, the feeding motor 437 drives the driving wheel 431 to rotate, the feeding motor 437 drives the dust-free cloth 40 to move under the action of friction force to realize feeding work, the pressing wheel 433 is operated to enable the pressing wheel 432 to leave the driving wheel 431, the dust-free cloth 40 is loosened, cloth changing work can be carried out, a belt transmission is adopted between the feeding motor 437 and the driving wheel 431, a first belt pulley is connected with a second belt pulley is connected with the material collecting wheel 421, a belt transmission is adopted between the first belt pulley and the second belt pulley, and thus the feeding motor 432 drives the dust-free cloth 40 to rotate, the dust-free cloth 40 is driven by the driving wheel 431 to move under the action of friction force, the action of the driving wheel 431, the feeding motor 437 drives the dust-free cloth 40 to move, the feeding motor to move, the dust-free cloth 421 is driven by the rolling, and the dust-free cloth 421 is driven by the rolling mode, and the dust-free cloth is driven by the driving wheel 421, and the rolling roll-free cloth, and the roller 421 is driven to rotate, and the dust is driven by the driving mode, and the roller and the driving roll and the dust is driven by the driving mode.

The driven wheel assembly comprises a driven wheel 434 and a compression cylinder 436, a piston rod of the compression cylinder 436 is provided with a compression block 435, one side of the compression block 435, which is close to the driven wheel 434, is provided with an arc-shaped groove, the compression cylinder 436 stretches to drive the compression block 435 to move so as to support the dust-free cloth 40 on the driven wheel 434, the tensioning cloth feeding work of the dust-free cloth 40 is realized, and the compression cylinder 454 stretches back to release the dust-free cloth 40, so that cloth changing work can be performed.

The elastic wheel assembly 44 includes a first elastic wheel structure and a second elastic wheel structure, which have the same structure and are located at the left and right sides of the wiping head 46, the elastic wheel assembly 44 includes an elastic wheel 444, a sliding rail 445, a sliding block 443, a fixed block 441 and a return spring 442, the fixed block 441 and the sliding rail 445 are fixed on the main board 41, the sliding block 443 is slidably connected to the sliding rail 445, the return spring 442 is connected between the sliding block 443 and the fixed block 441, the elastic wheel 444 is fixed on the sliding block 443, and by such arrangement, the dust-free cloth 40 can have a certain movement space, so that the deformation movement of the dust-free cloth 40 can be realized when the subsequent wiping head 46 drives the dust-free cloth 40 to rotate.

As shown in fig. 16, the guiding wheel assembly includes a plurality of guiding wheels 47 disposed on the main board 41, to limit and guide the dust-free cloth 40, so as to facilitate the cloth feeding operation of the dust-free cloth 40.

Referring to fig. 7-15, the rotating mechanism 45 includes a servo motor 451 and a fixing seat 452, the servo motor 451 is fixedly mounted on the main board 41 through the fixing seat 452, a shaft sleeve 461 is fixed on the wiping head 46, a wiping head 46 telescopic assembly is disposed between the servo motor 451 and the shaft sleeve 461, the wiping head 46 telescopic assembly includes a guide seat 456 and a cylinder 454 fixed on a side wall of the guide seat 456, a fixing ring is disposed on a main shaft of the servo motor 451, the fixing ring includes a first half ring 453 and a second half ring 4563, the second half ring 4563 is integrally formed at the top of the guide seat 456, the first half ring 453 is fixed on the second half ring 4563 by adopting a screw connection, so that the guide seat 456 is fixed on the main shaft of the servo motor 451, and the disassembly is also convenient, and the servo motor 451 drives the guide seat 456 to rotate so as to drive the whole wiping head 46 telescopic assembly and the wiping head 46 to rotate.

The bottom of guide holder 456 is provided with guiding portion 4561 and direction apron 457, dust-free cloth 40 warp guiding portion 4561 direction is located the below of wiping head 46, be equipped with the through-hole on the direction apron 457, it passes to drive when wiping head 46 moves down dust-free cloth 40 the through-hole, be provided with the centre bore on the guide holder 456, shaft sleeve 461 sliding connection in the centre bore, cylinder 454 with be provided with connection structure between the shaft sleeve 461, cylinder 454 passes through connection structure drive shaft sleeve 461 reciprocates, connection structure including set up in bar spout 4562 on the guide holder 456 and set up in the connecting hole on the shaft sleeve 461, bar spout 4562 with centre bore intercommunication, be connected with pusher 455 on the piston rod of cylinder 454, be fixed with push rod 462 on the pusher 455, push rod 462 pass bar spout 62 and the connecting hole, be provided with in the centre bore 464 and with be connected between shaft sleeve 461 a connection structure, cylinder 454 passes through connection structure drive the connection structure between the bar spout 4562 and the piston rod 463, thereby the piston rod 455 is moved up and is moved along with the connecting hole of the sleeve 463, and is compressed by the piston rod 455, thereby the compression space 45 is kept away from moving up to the top of the piston rod 455, and is realized the compression space 45, and the compression space 45 is kept away from the top is compressed by the compression groove 45, and is moved up to the top down, and is moved by the compression groove 45.

The cylinder 454 extends to drive the push block 455 to move downwards, the top of the limit slot 4551 contacts with the push rod 462 to drive the push rod 462 to move downwards, the wiping head 46 abuts against the dust-free cloth 40 and drives the dust-free cloth 40 to pass through the through hole on the guide cover plate 457, when the cylinder 454 stops and the compression spring 463 is in a natural state, the push rod 462 is a certain distance away from the top of the limit slot 4551, so that when the wiping head 46 abuts against a product, the upward deformation distance is provided, namely elasticity is provided for the wiping head 46 when the compression spring 463 makes the wiping head 46 wipe the product, the abutting force of the wiping head 46 against the product is prevented from being too strong to enable rotary wiping work, and the abutting pressure of the wiping head 46 against the product can be set through the arrangement of the compression spring 463 and the pressure sensor 465, for example, the height of a welding point is 0.2mm, the pressure given after the compression spring 463 is compressed when the pressure sensor 465 detects that the wiping head 46 abuts against the product is controlled to be 1-2N, the wiping head 46 is made of silica gel with hardness of 40 degrees, the elasticity modulus is approximately equal to 0.8, the elastic modulus is approximately equal to the elastic pressure of the compression spring is equal to 2N, the elastic pressure is approximately equal to 2N, when the pressure is equal to the pressure of the pressure is approximately 2N, and the pressure is approximately equal to 2N, when the pressure is equal to the pressure is 2N is completely 2N, and the pressure is completely can be 2 can be applied to the pressure can be completely and the pressure can be clean.

In some embodiments, the welding spot wiping device further includes a liquid adding module, the liquid adding module includes a liquid storage tank, a conduit 8, a liquid injection control valve 10, and a liquid outlet channel 11, the liquid storage tank is disposed on the workbench 1, the liquid outlet channel 11 is disposed on the guide seat 456, the liquid outlet channel 11 is connected with a pipe joint 9, and two ends of the conduit 8 are respectively connected with the pipe joint 9 and the liquid storage tank. In this embodiment, after the liquid outlet control valve is opened, the alcohol flows into the liquid outlet channel 11 through the conduit 8, and flows out from the outlet end of the liquid outlet channel 11, where the outlet end is located on the guide portion 4561 at the front end of the wiping head 46, so as to moisten the dust-free cloth 40, and the moistened dust-free cloth 40 section moves to the position right below the wiping head 46 through the cloth moving action, so that the wiping head 46 ejects to perform wiping operation, and thus the joint action of reciprocating rotary wiping of the alcohol and the dust-free cloth 40 improves the effect of wiping and cleaning the welding spots.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. A solder joint wiping device, comprising:

a work table;

the product jig is arranged on the workbench and is used for installing products of welding spots to be wiped;

the wiping module comprises a main board, dust-free cloth arranged on the main board, a dust-free cloth collecting and releasing mechanism, a dust-free cloth feeding mechanism, a wiping head and a rotating mechanism, wherein the wiping head is abutted against the dust-free cloth, and the rotating mechanism is connected with the wiping head and drives the wiping head to do reciprocating rotation;

the support frame set up in on the workstation, be provided with Z axle slip module on the support frame, Z axle slip module is used for the drive the module of wiping moves in vertical direction.

2. The welding spot wiping device according to claim 1, wherein the rotating mechanism comprises a servo motor, the servo motor is mounted on the main board, a shaft sleeve is fixed on the wiping head, and the shaft sleeve is fixedly connected with a main shaft of the servo motor.

3. The welding spot wiping device according to claim 2, wherein a wiping head telescopic assembly is arranged between the servo motor and the shaft sleeve, the wiping head telescopic assembly comprises a guide seat and a cylinder, a fixed ring is arranged on a main shaft of the servo motor, the guide seat and the cylinder are fixedly connected to the bottom of the fixed ring, a central hole is formed in the guide seat, the shaft sleeve is slidably connected in the central hole, a connecting structure is arranged between the cylinder and the shaft sleeve, and the cylinder drives the shaft sleeve to move up and down through the connecting structure.

4. The welding spot wiping device according to claim 3, wherein the connecting structure comprises a strip-shaped chute arranged on the guide seat and a connecting hole arranged on the shaft sleeve, the strip-shaped chute is communicated with the central hole, a push block is connected to a piston rod of the air cylinder, a push rod is fixed on the push block, and the push rod penetrates through the strip-shaped chute and the connecting hole.

5. The welding spot wiping device according to claim 4, wherein a spring seat and a pressure sensor connected with the spring seat are arranged in the central hole, a compression spring is fixedly connected between the spring seat and the shaft sleeve, a limit groove is arranged on the push block, the push rod is positioned in the limit groove, and an avoidance space for the push rod to move is reserved in the limit groove.

6. The welding spot wiping device according to claim 5, wherein a guide part and a guide cover plate are arranged at the bottom of the guide seat, a through hole is formed in the guide cover plate, the dust-free cloth is guided by the guide part to be positioned below the wiping head, and the wiping head drives the dust-free cloth to pass through the through hole when moving downwards.

7. A spot weld wiping apparatus according to any one of claims 3 to 6, wherein the dust-free cloth feeding mechanism comprises:

the driving wheel assembly comprises a driving wheel, a cloth feeding motor, a pressing wheel and an elastic pressing rod, belt transmission is adopted between the cloth feeding motor and the driving wheel, one end of the elastic pressing rod is fixed on the main board, the other end of the elastic pressing rod is fixedly connected with the pressing wheel, and the elastic pressing rod drives the pressing wheel to abut against the driving wheel when in a natural state;

the driven wheel assembly comprises a driven wheel and a compression cylinder, wherein a piston rod of the compression cylinder is provided with a compression block, and one side of the compression block, which is close to the driven wheel, is provided with an arc-shaped groove;

the elastic wheel assembly comprises a first elastic wheel structure and a second elastic wheel structure which are identical in structure and are positioned at the left side and the right side of the wiping head, the elastic wheel assembly comprises an elastic wheel, a sliding rail, a sliding block, a fixed block and a return spring, the fixed block and the sliding rail are fixed on the main board, the sliding block is connected to the sliding rail in a sliding manner, the return spring is connected between the sliding block and the fixed block, and the elastic wheel is fixed on the sliding block;

the guide wheel assembly is used for guiding the dust-free cloth and comprises a plurality of guide wheels arranged on the main board.

8. The welding spot wiping device according to claim 7, wherein the dust-free cloth collecting and releasing mechanism comprises a discharging wheel and a collecting wheel, and the dust-free cloth passes through the discharging wheel, the driven wheel, the elastic wheel in the first elastic wheel structure, the guide part, the elastic wheel in the second elastic wheel structure, the driving wheel and the collecting wheel in sequence when being distributed.

9. The welding spot wiping device according to claim 8, further comprising a liquid adding module, wherein the liquid adding module comprises a liquid storage tank, a guide pipe and a liquid outlet channel, the liquid storage tank is arranged on the workbench, the liquid outlet channel is arranged on the guide seat, the liquid outlet channel is connected with a pipe joint, and two ends of the guide pipe are respectively connected with the pipe joint and the liquid storage tank.

10. The welding spot wiping device according to claim 9, wherein a jig assembly line is arranged on the workbench, the product jig is installed on the jig assembly line, and the wiping module is provided with a plurality of wiping modules arranged on the supporting frame in parallel.