Precision adjusting equipment for PCB (Printed Circuit Board) bonding pad

Abstract

The invention provides PCB welding disc precision adjusting equipment which comprises an equipment shell and a connecting cross beam, the inner side surface of the equipment shell is fixedly connected with the connecting cross beam, the bottom surface of the equipment shell is fixedly connected with an equipment base, and a welding gun is installed on the inner side surface of the connecting cross beam. A clamping and positioning mechanism is arranged on the surface of the bottom of the equipment shell, a transverse adjusting mechanism is arranged on the surface of the inner side of the connecting cross beam, a longitudinal adjusting mechanism is arranged on the surface of the outer side of the welding gun, and a pressure adjusting mechanism is arranged on the surface of the inner side of the connecting cross beam. The transverse adjusting mechanism can transversely move and limit transverse movement to achieve longitudinal control, the longitudinal adjusting mechanism can longitudinally move and limit longitudinal movement to achieve transverse control, the pressure adjusting mechanism can adjust the welding pressure of the welding gun, and proper pressure application can ensure the welding quality. It is ensured that the welding disc exerts uniform pressure on the welding area, so that good welding connection is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field related to printed circuits, and in particular to a device for adjusting the precision of a soldering pad of a PCB. Background Art

[0002] Printed circuit board is a key electronic component widely used in various electronic devices. It is a flat board that supports and connects electronic components. It contains conductive paths, connection points and soldering points for transmitting electronic signals and electricity. The main function of PCB board is to provide mechanical support and electrical connection for electronic components. It is usually made of insulating materials, such as glass fiber reinforced epoxy resin (FR-4), and the surface is coated with conductive copper layers, which form circuits and are made by printing, etching and other processing technologies. The advantages of PCB board are its highly reliable circuit connection, compact design, easy manufacturing and assembly, and support for miniaturization and automated production of electronic devices. It is suitable for various application fields, including consumer electronics, communication equipment, medical instruments, industrial control and aerospace, etc. In the process of use, there are usually small components and pads on the PCB board, which require high-precision welding. Poor control of welding displacement may lead to cold welding and short circuit, which may cause circuit failure, and proper welding pressure ensures that the solder joints are in uniform contact with the pads and components to provide good solder joint connections. This is the key to ensure circuit reliability and stability. Poor control of welding pressure. Too high or too low welding pressure may cause cold solder joints and short circuits, thus affecting the quality of solder joint connection. Incorrect welding pressure may cause uneven distribution of solder joints. Some solder joints may be excessive or insufficient, which may reduce the reliability of solder joint connection.

[0003] However, most of the existing PCB board welding pad equipment are in use. After searching the patent number CN201810608161.7 BGA pad welding machine and BGA pad welding method, it is stated in the article that "a driving device is used to drive the electric spark welding head to move in the direction close to the installation position. At this time, the BGA pad and the welding material can be welded together by the electric spark welding head, and finally the driving device is used to drive the electric spark welding head to move away from the installation position." The welding head can move, but the pressure control is not good. Appropriate welding pressure ensures the use of an appropriate amount of solder to avoid excessive waste, thereby saving costs. High welding pressure may cause damage to components, especially for surface mount components. If the displacement control is not good, it may cause the quality of the solder joints to decline, and problems such as uneven solder joints or cold solder joints may occur, which may reduce the reliability of the solder joints. Summary of the invention

[0004] The purpose of the present invention is to provide a PCB board welding pad precision adjustment device to solve the existing PCB board welding pad device proposed in the above background technology. During use, there are usually small components and pads on the PCB board, which require high-precision welding. Poor control of welding displacement may cause cold welding and short circuit, which may cause circuit failure, and proper welding pressure ensures that the solder joints are evenly in contact with the pads and components to provide good solder joint connections. This is the key to ensuring circuit reliability and stability. Poor control of welding pressure. Too high or too low welding pressure may cause cold welding and short circuit, thereby affecting the quality of solder joint connection, and incorrect welding pressure may cause uneven distribution of solder joints, and some solder joints may be excessive or insufficient, which may reduce the reliability of solder joint connection.

[0005] To achieve the above-mentioned purpose, the present invention provides a PCB board welding plate precision adjustment device, comprising a device housing and a connecting beam, the inner surface of the device housing is fixedly connected to the connecting beam, the bottom surface of the device housing is fixedly connected to the device base, the inner surface of the connecting beam is installed with a welding gun, the bottom surface of the device housing is provided with a clamping positioning mechanism, the inner surface of the connecting beam is provided with a lateral adjustment mechanism, the outer surface of the welding gun is provided with a longitudinal adjustment mechanism, and the inner surface of the connecting beam is provided with a pressure adjustment mechanism.

[0006] Preferably, the number of the device housings is two and they are symmetrically distributed, both ends of the connecting crossbeam are fixedly connected to the device housings, and the connecting crossbeam is made of stainless steel.

[0007] Preferably, the clamping and positioning mechanism includes a fixed block, a mounting rod, a tension spring, a clamping plate and a placement base, the bottom surface of the equipment housing is fixedly connected to the fixed block, the inner surface of the fixed block is fixedly connected to the mounting rod, the outer surface of the mounting rod is sleeved with a tension spring, the outer surface of the mounting rod is slidably connected to the clamping plate, and the inner surface of the clamping plate is slidably connected to the placement base.

[0008] Preferably, a fixed block is fixedly connected to the bottom surface of the connecting beam, the mounting rod passes through the fixed block and is fixedly connected to the fixed block, one end of the tension spring is fixedly connected to the fixed block, and the other end of the tension spring is fixedly connected to a clamping plate, and the number of the clamping plates is two and they are symmetrically distributed.

[0009] Preferably, the lateral adjustment mechanism includes a sliding groove, a sliding plate, a magnetic clamp, a mounting shaft and a locking block. The inner surface of the connecting beam is provided with a sliding groove, the inner surface of the sliding groove is slidably connected to the sliding plate, the outer surface of the connecting beam is slidably connected to the magnetic clamp, the top surface of the magnetic clamp is fixedly connected to the mounting shaft, and the outer surface of the mounting shaft is rotatably connected to the locking block.

[0010] Preferably, the number of the sliding plates is two and they are symmetrically distributed, and the locking block is slidably connected to the sliding plates.

[0011] Preferably, the longitudinal adjustment mechanism includes a mounting cylinder, a sliding cylinder, a connecting block, a threaded column, a clamping disk and a clamping knob, the outer surface of the welding gun is snap-connected with the mounting cylinder, the bottom surface of the mounting cylinder is fixedly connected with the sliding cylinder, the outer surface of the sliding cylinder is fixedly connected with the connecting block, the inner surface of the connecting block is threadedly connected with a threaded column, one end of the threaded column is fixedly connected with the clamping disk, and the other end of the threaded column is fixedly connected with the clamping knob.

[0012] Preferably, the number of the connecting blocks is two and they are symmetrically distributed on the outer surface of the sliding cylinder, the sliding plate passes through the connecting blocks and is slidably connected to the connecting blocks, and the clamping disk is slidably connected to the sliding plate.

[0013] Preferably, the pressure regulating mechanism includes a mounting block, a rotating column, a sliding groove, a threaded rod, a compression spring and a lifting base. The inner surface of the connecting beam is slidably connected to the mounting block, the top of the mounting block is rotatably connected to the rotating column, the top surface of the connecting beam is provided with a sliding groove, the inner surface of the rotating column is threadedly connected to the threaded rod, the outer surface of the threaded rod is sleeved with a compression spring, and the bottom of the threaded rod is fixedly connected to the lifting base.

[0014] Preferably, the mounting block is slidably connected to the sliding groove, and both ends of the mounting block are fixedly connected to the sliding plate.

[0015] Preferably, the rotating column is slidably connected to the sliding groove, the threaded rod passes through the mounting block, and the lifting base is slidably connected to the sliding groove.

[0016] Compared with the prior art, the invention has the following beneficial effects: the PCB board welding plate precision adjustment device has the following effects:

[0017] 1. Through the setting of sliding grooves, sliding plates, magnetic clamps, mounting shafts and locking blocks, during use, a sliding plate is slidably connected in the sliding grooves on the connecting beam to limit the sliding range of the sliding plate. A longitudinal adjustment mechanism and a welding gun are installed on the sliding plate to realize the lateral movement of the welding gun. The magnetic clamp can be freely adjusted on the connecting beam by magnetic adsorption. When aligned with the sliding plate, the locking block can be lowered. The locking block rotates around the mounting shaft and is stuck on the sliding plate to limit the lateral movement of the sliding plate. At this time, the longitudinal adjustment mechanism can be used to make the welding gun only move longitudinally, thereby realizing precision control of the longitudinal movement of the welding gun.

[0018] 2. Through the arrangement of the mounting cylinder, sliding cylinder, connecting block, threaded column, clamping disk and clamping knob, during use, the connecting block is penetrated by the sliding plate and slidably connected, so that the connecting block can slide on the sliding plate, and the welding gun is driven by the mounting cylinder and the sliding cylinder to realize longitudinal movement. The welding gun is clamped and installed in the mounting cylinder and the sliding cylinder to ensure that it is always perpendicular to the placement base at the bottom and perpendicular to the PCB board. The threaded column is rotated on the connecting block by the clamping knob, and the threaded column moves on the connecting block and drives the clamping disk to move. When the clamping disk approaches the sliding plate in the connecting block, the clamping disks on both sides clamp it to limit the longitudinal movement of the welding gun. At this time, the welding gun can be made to move only laterally through the lateral adjustment mechanism, thereby realizing precision control of the lateral movement of the welding gun.

[0019] 3. Through the arrangement of the mounting block, the rotating column, the sliding groove, the threaded rod, the compression spring and the lifting base, during use, the mounting block can slide on the threaded rod and the lifting base. When the welding gun is pressed for welding, the sliding plate will be pressed down together, and the sliding plate will move downward with the mounting block until it contacts the lifting base. When the welding gun is not pressed, the mounting block will be lifted and reset by the compression spring on the lifting base. The threaded rod is connected to the lifting base. The threaded rod is driven to move and change the position of the lifting base by rotating the rotating column. In this way, the downward movement range of the mounting block can be changed, thereby adjusting the welding pressure of the welding gun. Appropriate pressure application can ensure the welding quality and ensure that the welding disk applies uniform pressure to the welding area to ensure a good welding connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a side view schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the device housing and the fixing block cooperating with each other in the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping plate and the placement base cooperating with each other in the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the connecting beam and the sliding plate cooperating with each other in the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the sliding plate and the locking block cooperating with each other in the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the locking block and the connecting block cooperating with each other in the present invention;

[0027] Figure 8It is a cross-sectional schematic diagram of the structure of the connection block and the clamping disk cooperating with each other in the present invention;

[0028] Fig. 9 This is a schematic diagram of the structure of the sliding plate and the mounting block cooperating with each other in the present invention;

[0029] Fig.10 It is a cross-sectional schematic diagram of the structure in which the mounting block and the lifting base cooperate with each other according to the present invention.

[0030] In the figure: 1. Equipment housing; 2. Connecting beam; 3. Equipment base; 4. Welding gun; 5. Clamping and positioning mechanism; 501. Fixed block; 502. Mounting rod; 503. Tension spring; 504. Clamping plate; 505. Placement base; 6. Lateral adjustment mechanism; 601. Sliding groove; 602. Sliding plate; 603. Magnetic clamping plate; 604. Mounting shaft; 605. Locking block; 7. Longitudinal adjustment mechanism; 701. Mounting cylinder; 702. Sliding cylinder; 703. Connecting block; 704. Threaded column; 705. Clamping disk; 706. Clamping knob; 8. Pressure adjustment mechanism; 801. Mounting block; 802. Rotating column; 803. Sliding groove; 804. Threaded rod; 805. Compression spring; 806. Lifting base. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-10 The present invention provides a PCB welding plate precision adjustment device: comprising a device housing 1 and a connecting beam 2, the inner surface of the device housing 1 is fixedly connected with the connecting beam 2, the bottom surface of the device housing 1 is fixedly connected with a device base 3, the inner surface of the connecting beam 2 is installed with a welding gun 4, the bottom surface of the device housing 1 is provided with a clamping and positioning mechanism 5, the inner surface of the connecting beam 2 is provided with a lateral adjustment mechanism 6, the outer surface of the welding gun 4 is provided with a longitudinal adjustment mechanism 7, and the inner surface of the connecting beam 2 is provided with a pressure adjustment mechanism 8. During use, the device housing 1 and the device base 3 provide external protection and install the internal connecting beam 2, the connecting beam 2 is used to install most of the components, after the clamping and positioning mechanism 5 clamps the PCB board to be welded, the welding gun 4 adjusts the position through the lateral adjustment mechanism 6 and the longitudinal adjustment mechanism 7, and adjusts the pressure during welding through the pressure adjustment mechanism 8.

[0033] Furthermore, the number of device housings 1 is two and they are symmetrically distributed. Both ends of the connecting beam 2 are fixedly connected to the device housing 1. The connecting beam 2 is made of stainless steel. The symmetrically arranged device housing 1 clamps and protects both sides of the connecting beam 2 at the same time. Stainless steel can be used in conjunction with the magnetic suction component.

[0034] Furthermore, the clamping and positioning mechanism 5 includes a fixing block 501, a mounting rod 502, a tension spring 503, a clamping plate 504 and a placement base 505. The bottom surface of the device housing 1 is fixedly connected with the fixing block 501, the inner surface of the fixing block 501 is fixedly connected with the mounting rod 502, the outer surface of the mounting rod 502 is sleeved with a tension spring 503, the outer surface of the mounting rod 502 is slidably connected with the clamping plate 504, and the inner surface of the clamping plate 504 is slidably connected with the placement base 505. The base 505 is set up. During use, the fixed block 501 is used to support and install the mounting rod 502. The fixed block 501 is respectively located at the center of the equipment housing 1 and the connecting beam 2. The mounting rod 502 is sleeved with a tension spring 503 and is slidably connected with a clamping plate 504. The tension spring 503 is fixedly connected to the clamping plate 504 and the central fixed block 501. The clamping plate 504 is pulled toward the fixed block 501. The clamping plates 504 on both sides are simultaneously close to the center to clamp the PCB board placed on the base 505 for fixation, which is suitable for PCB boards of different sizes.

[0035] Furthermore, a fixing block 501 is fixedly connected to the bottom surface of the connecting beam 2, a mounting rod 502 passes through the fixing block 501 and is fixedly connected to the fixing block 501, one end of a tension spring 503 is fixedly connected to the fixing block 501, and the other end of the tension spring 503 is fixedly connected to a clamping plate 504, the number of the clamping plates 504 is two and they are symmetrically distributed, the fixing blocks 501 are respectively located at the center of the equipment housing 1 and the connecting beam 2 for supporting and installing the mounting rod 502, and the tension spring 503 pulls the clamping plates 504 on both sides toward the fixed block 501 for clamping.

[0036] Furthermore, the lateral adjustment mechanism 6 includes a sliding groove 601, a sliding plate 602, a magnetic clamping plate 603, a mounting shaft 604 and a locking block 605. The inner surface of the connecting beam 2 is provided with a sliding groove 601, the inner surface of the sliding groove 601 is slidably connected to the sliding plate 602, the outer surface of the connecting beam 2 is slidably connected to the magnetic clamping plate 603, the top surface of the magnetic clamping plate 603 is fixedly connected to the mounting shaft 604, and the outer surface of the mounting shaft 604 is rotatably connected to the locking block 605. Through the arrangement of the sliding groove 601, the sliding plate 602, the magnetic clamping plate 603, the mounting shaft 604 and the locking block 605, during use, the connecting beam 2 A sliding plate 602 is slidably connected in the sliding groove 601 opened on the connecting beam 2, which is used to limit the sliding range of the sliding plate 602. A longitudinal adjustment mechanism 7 and a welding gun 4 are installed on the sliding plate 602 to realize the lateral movement of the welding gun 4. The magnetic clamp 603 is adsorbed on the connecting beam 2 by magnetic attraction and can freely adjust its position. When aligned with the sliding plate 602, the locking block 605 can be lowered. The locking block 605 rotates around the installation axis 604 and is stuck on the sliding plate 602 to limit the lateral movement of the sliding plate 602. At this time, the longitudinal adjustment mechanism 7 can be used to make the welding gun 4 only move longitudinally, thereby realizing precision control of the longitudinal movement of the welding gun 4.

[0037] Furthermore, the number of sliding plates 602 is two and they are symmetrically distributed. The locking block 605 is slidably connected to the sliding plate 602. The symmetrically arranged sliding plate 602 is used to install the longitudinal adjustment mechanism 7. The locking block 605 can be stuck on the sliding plate 602 to limit the lateral movement of the sliding plate 602.

[0038] Furthermore, the longitudinal adjustment mechanism 7 includes a mounting cylinder 701, a sliding cylinder 702, a connecting block 703, a threaded column 704, a clamping plate 705 and a clamping knob 706. The outer surface of the welding gun 4 is engaged with the mounting cylinder 701, the bottom surface of the mounting cylinder 701 is fixedly connected to the sliding cylinder 702, the outer surface of the sliding cylinder 702 is fixedly connected to the connecting block 703, the inner surface of the connecting block 703 is threadedly connected to the threaded column 704, one end of the threaded column 704 is fixedly connected to the clamping plate 705, and the other end of the threaded column 704 is fixedly connected to the clamping knob 706. Through the arrangement of the mounting cylinder 701, the sliding cylinder 702, the connecting block 703, the threaded column 704, the clamping plate 705 and the clamping knob 706, during use, the connecting block 703 is clamped by the sliding plate 602 The connection is penetrated and slidably connected, so that the connecting block 703 can slide on the sliding plate 602, and drive the welding gun 4 to realize longitudinal movement through the installation tube 701 and the sliding tube 702. The welding gun 4 is clamped and installed in the installation tube 701 and the sliding tube 702 to ensure that it is always perpendicular to the bottom placement base 505 and the PCB board. The threaded column 704 is rotated on the connecting block 703 through the clamping knob 706, and the threaded column 704 moves on the connecting block 703 and drives the clamping plate 705 to move. When the clamping plate 705 is close to the sliding plate 602 in the connecting block 703, the clamping plates 705 on both sides clamp it to limit the longitudinal movement of the welding gun 4. At this time, the lateral adjustment mechanism 6 can be used to make the welding gun 4 only move lateral, thereby realizing the precision control of the lateral movement of the welding gun 4.

[0039] Furthermore, there are two connecting blocks 703 and they are symmetrically distributed on the outer surface of the sliding cylinder 702. The sliding plate 602 penetrates the connecting block 703 and is slidably connected to the connecting block 703. The clamping plate 705 is slidably connected to the sliding plate 602. The symmetrically arranged connecting block 703 disperses the force and balances the weight when moving through the sliding plate 602. The connecting block 703 is penetrated by the sliding plate 602 and the sliding connection allows the connecting block 703 to slide on the sliding plate 602. When the clamping plate 705 approaches the sliding plate 602 in the connecting block 703, the clamping plates 705 on both sides clamp it, thereby limiting the movement of the welding gun 4 in the longitudinal direction.

[0040] Furthermore, the pressure regulating mechanism 8 includes a mounting block 801, a rotating column 802, a sliding groove 803, a threaded rod 804, a compression spring 805 and a lifting base 806. The inner surface of the connecting beam 2 is slidably connected with the mounting block 801, the top of the mounting block 801 is rotatably connected with the rotating column 802, the top surface of the connecting beam 2 is provided with a sliding groove 803, the inner surface of the rotating column 802 is threadedly connected with the threaded rod 804, the outer surface of the threaded rod 804 is sleeved with a compression spring 805, and the bottom of the threaded rod 804 is fixedly connected with the lifting base 806. The lifting base 806 is set up, and during use, the mounting block 801 can slide on the threaded rod 804 and the lifting base 806. When the welding gun 4 is pressed for welding, the sliding plate 602 will be pressed down together, and the sliding plate 602 will move downward with the mounting block 801 until it contacts the lifting base 806. When the welding gun 4 is not pressed, the mounting block 801 will be lifted and reset by the compression spring 805 on the lifting base 806. The threaded rod 804 is connected to the lifting base 806, and the threaded rod 804 is driven to move and change the position of the lifting base 806 by rotating the rotating column 802. In this way, the downward movement range of the mounting block 801 can be changed, thereby adjusting the welding pressure of the welding gun 4.

[0041] Furthermore, the mounting block 801 is slidably connected to the sliding groove 601 , and both ends of the mounting block 801 are fixedly connected to the sliding plate 602 . The mounting block 801 moves in the connecting beam 2 along with the lateral adjustment mechanism 6 .

[0042] Furthermore, the rotating column 802 is slidably connected to the sliding groove 803, the threaded rod 804 passes through the mounting block 801, the lifting base 806 is slidably connected to the sliding groove 601, the rotating column 802 moves on the connecting beam 2 through the sliding groove 803, and the threaded rod 804 is controlled by the rotating column 802 to control the position in the mounting block 801 without affecting the movement of the mounting block 801.

[0043] Working principle: A PCB board welding plate precision adjustment device. During use, the device housing 1 and the device base 3 provide external protection, the connecting beam 2 installs the components, the clamping and positioning mechanism 5 clamps, the welding gun 4 adjusts the position through the lateral adjustment mechanism 6 and the longitudinal adjustment mechanism 7, and the pressure during welding is adjusted through the pressure adjustment mechanism 8. The clamping and positioning mechanism 5 fixes the block 501 to install the mounting rod 502, the tension spring 503 clamps the plate 504 toward the fixed block 501, the lateral adjustment mechanism 6 slide plate 602 drives the welding gun 4 to move, and the magnetic clamp plate 603 controls the lock. The position of the fixed block 605, the locking block 605 locks the displacement of the lateral adjustment mechanism 6, the longitudinal adjustment mechanism 7 can slide on the sliding plate 602 to drive the welding gun 4 to move, the threaded column 704 is rotated by the clamping knob 706 on the connecting block 703, and the clamping disk 705 is clamped when it approaches the sliding plate 602 in the connecting block 703 to lock the displacement of the longitudinal adjustment mechanism 7, and the pressure adjustment mechanism 8 drives the threaded rod 804 to move and change the position of the lifting base 806 by rotating the rotating column 802, thereby changing the downward movement range of the mounting block 801, thereby adjusting the welding pressure of the welding gun 4.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the implementation rules without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB soldering pad precision adjustment device, comprising a device housing (1) and a connecting beam (2), characterized in that: The inner surface of the device housing (1) is fixedly connected to a connecting beam (2), the bottom surface of the device housing (1) is fixedly connected to a device base (3), the inner surface of the connecting beam (2) is mounted with a welding gun (4), the bottom surface of the device housing (1) is provided with a clamping positioning mechanism (5), the inner surface of the connecting beam (2) is provided with a lateral adjustment mechanism (6), the outer surface of the welding gun (4) is provided with a longitudinal adjustment mechanism (7), and the inner surface of the connecting beam (2) is provided with a pressure adjustment mechanism (8); The pressure regulating mechanism (8) comprises a mounting block (801), a rotating column (802), a sliding groove (803), a threaded rod (804), a compression spring (805) and a lifting base (806); the inner surface of the connecting crossbeam (2) is slidably connected to the mounting block (801); the top of the mounting block (801) is rotatably connected to the rotating column (802); the top surface of the connecting crossbeam (2) is provided with a sliding groove (803); the inner surface of the rotating column (802) is threadedly connected to the threaded rod (804); the outer surface of the threaded rod (804) is sleeved with a compression spring (805); and the bottom of the threaded rod (804) is fixedly connected to the lifting base (806).

2. A PCB board welding pad precision adjustment device according to claim 1, characterized in that: The number of the device housings (1) is two and they are symmetrically distributed; both ends of the connecting crossbeam (2) are fixedly connected to the device housing (1); and the connecting crossbeam (2) is made of stainless steel.

3. A PCB board welding pad precision adjustment device according to claim 1, characterized in that: The clamping and positioning mechanism (5) comprises a fixing block (501), a mounting rod (502), a tension spring (503), a clamping plate (504) and a placement base (505); the bottom surface of the device housing (1) is fixedly connected to the fixing block (501); the inner surface of the fixing block (501) is fixedly connected to the mounting rod (502); the outer surface of the mounting rod (502) is sleeved with a tension spring (503); the outer surface of the mounting rod (502) is slidably connected to the clamping plate (504); and the inner surface of the clamping plate (504) is slidably connected to the placement base (505).

4. A PCB board welding pad precision adjustment device according to claim 3, characterized in that: A fixing block (501) is fixedly connected to the bottom surface of the connecting crossbeam (2), the mounting rod (502) passes through the fixing block (501) and is fixedly connected to the fixing block (501), one end of the tension spring (503) is fixedly connected to the fixing block (501), and the other end of the tension spring (503) is fixedly connected to a clamping plate (504), and the number of the clamping plates (504) is two and they are symmetrically distributed.

5. The PCB soldering pad precision adjustment device according to claim 1, characterized in that: The lateral adjustment mechanism (6) comprises a sliding groove (601), a sliding plate (602), a magnetic clamping plate (603), a mounting shaft (604) and a locking block (605); the inner surface of the connecting crossbeam (2) is provided with a sliding groove (601); the inner surface of the sliding groove (601) is slidably connected to the sliding plate (602); the outer surface of the connecting crossbeam (2) is slidably connected to the magnetic clamping plate (603); the top surface of the magnetic clamping plate (603) is fixedly connected to the mounting shaft (604); the outer surface of the mounting shaft (604) is rotatably connected to the locking block (605).

6. A PCB board welding pad precision adjustment device according to claim 5, characterized in that: The number of the sliding plates (602) is two and they are symmetrically distributed, and the locking block (605) is slidably connected to the sliding plates (602).

7. The PCB soldering pad precision adjustment device according to claim 1, characterized in that: The longitudinal adjustment mechanism (7) comprises a mounting cylinder (701), a sliding cylinder (702), a connecting block (703), a threaded column (704), a clamping disk (705) and a clamping knob (706); the outer surface of the welding gun (4) is snap-connected with the mounting cylinder (701); the bottom surface of the mounting cylinder (701) is fixedly connected with the sliding cylinder (702); the outer surface of the sliding cylinder (702) is fixedly connected with the connecting block (703); the inner surface of the connecting block (703) is threadedly connected with the threaded column (704); one end of the threaded column (704) is fixedly connected with the clamping disk (705); the other end of the threaded column (704) is fixedly connected with the clamping knob (706).

8. The PCB soldering pad precision adjustment device according to claim 7, characterized in that: The number of the connecting blocks (703) is two and they are symmetrically distributed on the outer surface of the sliding cylinder (702); the sliding plate (602) passes through the connecting blocks (703) and is slidably connected to the connecting blocks (703); and the clamping disc (705) is slidably connected to the sliding plate (602).

9. The PCB soldering pad precision adjustment device according to claim 1, characterized in that: The mounting block (801) is slidably connected to the sliding groove (601), and both ends of the mounting block (801) are fixedly connected to the sliding plate (602).

10. The PCB soldering pad precision adjustment device according to claim 1, characterized in that: The rotating column (802) is slidably connected to the sliding groove (803), the threaded rod (804) passes through the mounting block (801), and the lifting base (806) is slidably connected to the sliding groove (601).

Images