CN220462542U

CN220462542U - PCB welding device

Info

Publication number: CN220462542U
Application number: CN202321881563.7U
Authority: CN
Inventors: 李彬霞
Original assignee: Chengdu Youcheng Intelligent Technology Co ltd
Current assignee: Chengdu Youcheng Intelligent Technology Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-02-09
Anticipated expiration: 2033-07-17

Abstract

The utility model discloses a PCB welding device, which belongs to the technical field of welding racks and comprises a device table, wherein a U-shaped frame is arranged on the device table, a plate clamp is arranged on the U-shaped frame through a rotating shaft, a ball seat is fixed on the table top of the device table, a spherical cavity is formed on the ball seat, a steel ball capable of rolling in the spherical cavity is arranged in the spherical cavity, the top of the steel ball is positioned outside the spherical cavity, the welding device further comprises a supporting rod, the bottom end of the supporting rod is fixedly connected with the top of the steel ball, and the U-shaped frame is fixed at the top end of the supporting rod. The structural design of the welding device is used for solving the problem of convenience when the welding spots on the PCB are inspected and processed.

Description

PCB welding device

Technical Field

The utility model relates to a welding bench, in particular to a PCB welding device.

Background

A Printed Circuit Board (PCB), also known as a printed circuit board, generally refers to a circuit board that is not provided with electronic components. The PCB is a basic component part of an electronic product, is used as a carrier for circuit connection of various electronic components on the electronic product, and in the prior art, the welding of the electronic components on the PCB is mostly finished by adopting an automatic assembly line, and in order to ensure the product quality, the PCB which finishes the welding of the electronic components is also required to be subjected to virtual welding detection, welding spot adhesion detection, manual repair of welding defects and the like, and the PCB welding device is widely applied to manual repair of the welding defects.

Among the prior art, dedicated PCB welding set includes grillage and support, and the grillage is used for centre gripping PCB to the grillage is through pivot rotatable coupling on the support, and such device structural style makes PCB unsettled fixed, rotates the grillage in-process and not only can not cause the part to receive striking and extrusion on the PCB, can make PCB expose in the operational environment to PCB with different angles simultaneously. Meanwhile, the bracket is provided with locking screws for locking the plate frame, so that the PCB can maintain a specific posture for manual inspection, welding and the like.

In the PCB welding device with the structural form, the rotating shaft enables the PCB to rotate around the axis of the rotating shaft, so that the lower welding spots of the PCB can be conveniently inspected and processed from the front or the rear of the part, and when the welding spots are inspected and processed in other directions, related personnel are often required to skew the body, and the efficiency and the labor intensity for performing related processing are unfavorable.

Disclosure of Invention

The utility model provides a PCB welding device which is used for solving the problem of convenience in checking and processing welding spots on a PCB.

The PCB welding device provided by the utility model solves the problems through the following technical points: the utility model provides a PCB welding set, includes the device platform, install the U-shaped frame on the device platform, the plate clamp is installed through the pivot to the U-shaped frame, be fixed with the ball seat on the mesa of device platform, be formed with spherical chamber on the ball seat, be provided with the steel ball that can roll in spherical chamber in the spherical chamber, the top of steel ball is located the outside in spherical chamber, still includes bottom and steel ball top fixed connection's vaulting pole, the top that the vaulting pole was fixed in to the U-shaped frame.

Among the prior art, including the structural style and the use mode of the PCB welding set of U-shaped frame, pivot and board clamp do: the U-shaped frame is the cell body structure of opening orientation, and the both ends of board clamp all form rotatable relation of connection through pivot and cell body structure's lateral wall, and PCB is fixed in on the board clamp, and when the board clamp rotated for the U-shaped frame through the pivot, can be with PCB adjustment back up, top surface up or other postures, and PCB welder or inspection personnel are when checking and repairing the target solder joint on the PCB, because PCB can be adjusted to have different postures, so PCB welding device of this kind of form has the advantage that conveniently accomplishes handling the solder joint of PCB different positions.

According to the scheme, on the basis of the structure, the U-shaped frame is further supported through the ball seat, the steel ball and the supporting rod, so that when the PCB fixing device is used, the plate clamp can form the degree of freedom for rotating around the rotating shaft, meanwhile, the whole structure formed by the U-shaped frame, the rotating shaft and the plate clamp can rotate along with the steel ball, the PCB fixed on the plate clamp can be rotated to other postures, for example, the PCB can only be tilted forwards and backwards under the action of the rotating shaft, the PCB can be tilted left and right or tilted to other directions through the rotation of the steel ball in the ball seat, and the PCB posture adjusting mode enables PCB disposal staff to inspect and repair welding spots on the PCB from more selectable angles under the fixed sitting postures, and is particularly suitable for inspecting and repairing the welding spots below electronic components on the PCB, so that the purpose of inspecting and processing the welding spots on the PCB is improved is achieved.

In this scheme, the vaulting pole is fixed in the top of steel ball to the top of steel ball is located the outside in spherical chamber, and like this, the vaulting pole is whole to be located the outside in spherical chamber, and when steel ball rotation, vaulting pole take place synchronous rotation and with the inconsistent steel ball of bulb seat, the steel ball rotates the biggest angle, and this biggest angle can set up according to actual need. Meanwhile, it is easy to understand that the steel ball and the ball seat form a ball head hinge structure, as an equivalent scheme, the steel ball can be set to be completely embedded in the spherical cavity, and the maximum angle is obtained by utilizing the gap between the supporting rod and the ball seat, but the steel ball is set to be larger in the application, so that the sensitivity of the rotation of the steel ball to the balance weight of the PCB on the plate clamp is reduced, the ball head hinge structure is only a preferable scheme in practice, and the realization mode of completely embedding the steel ball in the spherical cavity is considered as the technical scheme equivalent to the scheme.

In a specific embodiment, the plate clip is fixedly connected with the rotating shaft, the rotating shaft is rotatably connected with the U-shaped frame, and the plate clip further comprises a damper mounted on the U-shaped frame, and the damper enables the rotation of the rotating shaft to be damped rotation. In the prior art, the scheme of adopting the locking screw to rotate and lock the rotating shaft is adopted, but the application needs personnel to independently fasten and loosen the locking screw, the handling efficiency of the PCB is unfavorable in the operation process, based on the scheme, the damper is adopted as an alternative scheme of the locking screw, when the PCB is specifically used, the rotating shaft can not be forced to rotate only under the dead weight of the plate clamp and the PCB by adjusting the resistance of the damper, and when the rotating shaft is required to rotate to adjust the angle of the PCB, the rotating shaft is forced to overcome the resistance from the damper by applying external force to the PCB or the plate clamp, so that the adjustment and the fixing efficiency of the gesture of the PCB can be effectively improved. In a specific application, the damper may be configured to: the damper comprises a friction plate which is always in contact with a rotating shaft, the friction plate is supported by a compression spring, and acting force of the friction plate to the rotating shaft can be adjusted by adjusting initial compression amount of the compression spring, so that damping action exerted by the damper is adjustable.

In one embodiment, the brace is provided with a grip. The embodiment provides a set steel ball rotation driving mode: the PCB disposal personnel hold the sleeve swing steel ball by hand and are used for realizing standardized adjustment of the gesture of the PCB.

In one embodiment, the spherical cavity is provided with a clamping plate, and the spherical cavity further comprises a cylinder for driving the clamping plate to clamp the steel ball. When the technical scheme is specifically used, before the clamping plate does not restrict the steel ball to rotate, the steel ball is forced to roll towards all directions by external force, at the moment, welding spots at all positions of the PCB can be conveniently checked, after defects are detected, the air cylinder acts on the clamping plate and clamps the steel ball by the clamping plate, and the PCB can be enabled to maintain a specific gesture for people to handle the defective welding spots. In the concrete application, the cylinder pushes the clamping plate to move towards the steel ball, the steel ball can be fixed by the clamping plate, and after the welding point is treated, the cylinder retreats, and the clamping plate loses the clamping function on the steel ball.

In a specific embodiment, the air cylinder further comprises an air path controller connected to the air path of the air cylinder, and further comprises a foot controller, wherein the foot controller is connected with the air path controller through a signal wire, and the signal wire is used for realizing: and transmitting an action signal of the pedal controller to the air circuit controller, and controlling the air supply state of the air cylinder by the air circuit controller according to the action signal. This scheme is when concrete use, accomplishes the action of splint centre gripping and relaxation steel ball through foot controller to liberation PCB disposers's both hands. The pedal controller is preferably applied, before being stepped on, the piston in the air cylinder moves to a position where the clamping plate is separated from the steel ball under the action of the built-in spring, after being stepped on, the pedal controller supplies air to the air cylinder through the air circuit controller, so that the piston moves towards the direction of pushing the clamping plate to move towards the side where the steel ball is located, and the steel ball is locked by the clamping plate. In a specific application, the signal line may be a conductive line, so that the signal line is used to transmit a signal, after the air channel controller receives the signal, the actuating mechanism is used to adjust the state of the air channel valve to execute a related air channel control action, or the signal line may be set to be a signal line for transmitting a force, and the pedal controller itself is used as the actuating mechanism to directly pull the air channel valve on the air channel controller.

In a specific embodiment, two packing blocks are arranged in the ball seat, the two packing blocks are vertically stacked and fixedly connected, the lower end cavity of the spherical cavity is positioned on the lower packing block, and the upper end cavity of the spherical cavity is positioned on the upper packing block. The embodiment provides a specific ball seat form, namely, a spherical cavity is formed on a filler block, and when the ball seat is installed, the lower filler block, the steel ball and the upper filler block are installed in sequence, and the fixed connection is realized by bolts and the like. The better application is that the filler blocks are made of high polymer materials, and lubricating oil is injected into the spherical cavity of the filler block below so as to reduce the noise when the device is used.

In one embodiment, the device further comprises a dust cover, wherein one end of the dust cover is fixed on the top surface of the upper filler block, and the other end of the dust cover is fixed on the steel ball or the stay bar. In this scheme, the dust cover is used for shutoff steel ball and bulb seat clearance's open end, for guaranteeing the swing stroke of PCB under the steel ball effect, the preferred application is the upper end cover of dust cover is established in the outside of vaulting pole and is connected with the lateral wall sealing of vaulting pole, the lower extreme of dust cover covers the opening in spherical chamber on the below filler piece and is connected with the up end sealing of below filler piece.

In a specific embodiment, a counterweight is arranged at the bottom of the steel ball, and the gravity center of the counterweight is positioned on the axis of the stay bar. In this scheme, the counter weight is used for resume the gesture of U-shaped frame, namely: after the steel ball is forced to rotate under the external force, the gravity center position of the counterweight is changed while the steel ball rotates, and after the external force is removed, the steel ball can roll back spontaneously under the action of the gravity center. The U-shaped frame is preferably used for enabling the U-shaped frame to restore to the posture that the opening faces to the right upper direction under the action of the counterweight after the external force to the steel ball is removed.

In a specific embodiment, the steel ball is formed by welding an upper hemisphere and a lower hemisphere, the density of the upper hemisphere is smaller than that of the lower hemisphere, the stay bar is welded at the top of the upper hemisphere, and the lower hemisphere is used as a bottom counterweight of the steel ball. The scheme provides a scheme that the upper hemisphere and the lower hemisphere of the steel ball are arranged to have different densities, so that the center of gravity of the steel ball deviates from the center of the steel ball. The preferred application is: the lower hemisphere has higher density than the upper hemisphere, and the surface is more wear-resistant (the wear-resistant performance is not necessarily the material performance of the lower hemisphere material in implementation, and the wear-resistant purpose can be achieved through the surface treatment process).

In a specific embodiment, the plate clip is a door frame-shaped structure formed by a side plate and a middle plate, the side plate and the middle plate are provided with clamping grooves, all the clamping grooves are positioned on the same plane, the clamping grooves on the side plate are intersected with the clamping grooves on the middle plate, and the clamping grooves on the side plate extend to the free ends of the side plate. The scheme provides a scheme which is reliable in PCB fixation and simple in structure: the PCB to be fixed is embedded into the clamping groove through the opening side of the plate clamp, and the PCB can be locked on the plate clamp through the PCB locking screw arranged on the side plate after the PCB is embedded into the target position.

The utility model has at least the following beneficial effects:

the U-shaped frame is supported through the ball seat, the steel ball and the supporting rod, so that the plate clamp can not only form the degree of freedom of rotating around the rotating shaft through the rotating shaft when the PCB frame is used, but also rotate along with the steel ball through the U-shaped frame, the rotating shaft and the structure formed by the plate clamp, and the PCB posture adjustment mode enables PCB disposal staff to inspect and repair welding spots on the PCB from more optional angles under a fixed sitting posture, and is particularly suitable for inspecting and repairing the welding spots below electronic components on the PCB, so that the purpose of improving convenience in inspecting and processing the welding spots on the PCB is achieved.

Drawings

FIG. 1 is a front view of one embodiment of a PCB soldering apparatus according to the present utility model, the dust boot not being shown in the front view;

FIG. 2 is a cross-sectional view of the head seat portion of FIG. 1, showing only the cylinder rod mounting holes;

fig. 3 is a perspective view of the panel clip of fig. 1.

The reference numerals in the figures are in turn: 1. the device comprises a device table, 2, a pedal controller, 3, an air path controller, 4, an air cylinder, 5, a ball seat, 6, a steel ball, 7, a holding sleeve, 8, a supporting rod, 9, a U-shaped frame, 10, a damper, 11, a rotating shaft, 12, a plate clamp, 13, a clamping groove, 14, a filler block, 15, a clamping plate, 16 and a dust-proof sleeve.

Detailed Description

The present utility model will be described in further detail with reference to examples, but the structure of the present utility model is not limited to the following examples.

Example 1:

referring to fig. 1 to 3, a PCB welding device comprises a device table 1, a U-shaped frame 9 is mounted on the device table 1, a plate clip 12 is mounted on the U-shaped frame 9 through a rotating shaft 11, a ball seat 5 is fixed on the table top of the device table 1, a spherical cavity is formed on the ball seat 5, a steel ball 6 capable of rolling in the spherical cavity is arranged in the spherical cavity, the top of the steel ball 6 is located outside the spherical cavity, a supporting rod 8 with the bottom fixedly connected with the top of the steel ball 6 is further included, and the U-shaped frame 9 is fixed on the top of the supporting rod 8.

In the prior art, the structure form and the use mode of the PCB welding device comprising the U-shaped frame 9, the rotating shaft 11 and the plate clamp 12 are as follows: the U-shaped frame 9 is the cell body structure of opening orientation, and the both ends of board clamp 12 all form rotatable relation of connection through pivot 11 and cell body structure's lateral wall, and the PCB is fixed in on board clamp 12, and when board clamp 12 rotated for U-shaped frame 9 through pivot 11, can be with the PCB adjustment back up, top surface up or other postures, and PCB welder or inspection personnel are when checking and repairing the target solder joint on the PCB, because the PCB can be adjusted to have different postures, so this kind of PCB welding set has the advantage that conveniently accomplishes handling the solder joint of PCB different positions.

The scheme is further arranged to form a U-shaped frame 9 through the ball seat 5, the steel ball 6 and the supporting rod 8 to support on the basis of the structure, so that when the scheme is used, the plate clamp 12 not only can form the degree of freedom for rotating around the rotating shaft 11 through the rotating shaft 11, but also can rotate along with the steel ball 6 through the whole structure formed by the U-shaped frame 9, the rotating shaft 11 and the plate clamp 12, so that a PCB fixed on the plate clamp 12 can be rotated to other postures, for example, the PCB can only be tilted forwards and backwards under the action of the rotating shaft 11, and the PCB can be tilted leftwards and rightwards or in other directions through the rotation of the steel ball 6 in the ball seat 5.

In this scheme, stay bar 8 is fixed in the top of steel ball 6 to the top of steel ball 6 is located the outside in spherical chamber, and like this, stay bar 8 wholly is located the outside in spherical chamber, and when steel ball 6 rotates, stay bar 8 takes place synchronous rotation and inconsistent with bulb seat 5 steel ball 6 rotates the biggest angle, and this biggest angle can set up according to actual need. It is easy to understand that the steel ball 6 and the ball seat 5 form a ball hinge structure, as an equivalent scheme, the steel ball 6 can be set to be completely embedded in the spherical cavity, and the maximum angle is obtained by utilizing the gap between the supporting rod 8 and the ball seat 5, but in the application, the steel ball 6 is preferably set to be larger so as to reduce the sensitivity of the rotation of the steel ball 6 to the weight of the PCB on the plate clamp 12, so that the ball hinge structure is only a preferable scheme in practice, and the implementation mode of completely embedding the steel ball 6 in the spherical cavity should be considered as a technical scheme equivalent to the scheme.

The preferred scheme of this embodiment is: the plate clamp 12 is fixedly connected with the rotating shaft 11, the rotating shaft 11 is rotatably connected with the U-shaped frame 9, and the plate clamp further comprises a damper 10 arranged on the U-shaped frame 9, and the damper 10 enables the rotating shaft 11 to rotate in a damping mode. In the prior art, the scheme of adopting the locking screw to rotationally lock the rotating shaft 11 is adopted, but the application needs personnel to independently fasten and loosen the locking screw, the treatment efficiency of the operation process to the PCB is unfavorable, based on the scheme, the damper 10 is adopted as an alternative scheme of the locking screw, when the PCB is specifically used, the rotating shaft 11 can not be forced to rotate only under the dead weight of the plate clamp 12 and the PCB by adjusting the resistance of the damper 10 to the rotation of the rotating shaft 11, and when the rotating shaft 11 is required to rotate to adjust the angle of the PCB, the rotating shaft 11 is forced to overcome the resistance from the damper 10 by applying external force to the PCB or the plate clamp 12, so that the adjustment and the fixing efficiency of the gesture of the PCB can be effectively improved. In a specific application, the damper 10 may be configured to: the damper comprises a friction plate which is always in contact with a rotating shaft 11, the friction plate is supported by a compression spring, and the acting force of the friction plate on the rotating shaft 11 can be adjusted by adjusting the initial compression amount of the compression spring, so that the damping action exerted by the damper 10 can be adjusted.

The preferred scheme of this embodiment is: the stay bar 8 is provided with a holding sleeve 7. The embodiment provides a set steel ball 6 rotation driving mode: the PCB disposal staff holds the holding sleeve 7 to swing the steel ball 6 for realizing standardized adjustment of the gesture of the PCB.

The preferred scheme of this embodiment is: the spherical cavity is provided with a clamping plate 15 and further comprises a cylinder 4 for driving the clamping plate 15 to clamp 12 the steel ball 6. When the scheme is used specifically, before the clamping plate 15 does not restrict the steel ball 6 to rotate, the steel ball 6 is forced to roll towards all directions by external force, at the moment, welding spots at all positions of the PCB can be conveniently checked, after defects are detected, the air cylinder 4 acts on the clamping plate 15, the clamping plate 15 clamps the steel ball 6, and the PCB can be kept in a specific posture for people to handle the defective welding spots. In a specific application, the cylinder 4 pushes the clamping plate 15 to move towards the steel ball 6, the steel ball 6 can be fixed by the clamping plate 15, the cylinder 4 retreats after the welding point treatment is finished, and the clamping plate 15 loses the clamping function on the steel ball 6.

The preferred scheme of this embodiment is: still including connecting the gas circuit controller 3 on cylinder 4 gas circuit, still include pedal controller 2, pedal controller 2 passes through the signal line and links to each other with gas circuit controller 3, the signal line is used for realizing: the action signal of the foot controller 2 is transmitted to the air path controller 3, and the air path controller 3 controls the air supply state of the air cylinder 4 according to the action signal. When the scheme is specifically used, the action of clamping the steel ball 6 by the clamping plate 15 through clamping the steel ball 12 is completed through the pedal controller 2, so that the hands of a PCB disposal person are liberated. Preferably, before the pedal controller 2 is not stepped on, the piston in the air cylinder 4 moves to a position where the clamping plate 15 is separated from the steel ball 6 under the action of the built-in spring, after the pedal controller 2 is stepped on, air is supplied to the air cylinder 4 through the air channel controller 3, so that the piston moves in a direction of pushing the clamping plate 15 to move towards the side where the steel ball 6 is located, and the steel ball 6 is locked by the clamping plate 15. In a specific application, the signal line may be a conductive line, so that the signal line is used to transmit a signal, after the air channel controller 3 receives the signal, the actuating mechanism is used to adjust the state of the air channel valve to execute a related air channel control action, or the signal line may be set to be a signal line for transmitting a force, and the foot controller 2 itself is used as the actuating mechanism to directly pull the air channel valve on the air channel controller 3.

The preferred scheme of this embodiment is: two filler blocks 14 are arranged in the ball seat 5, the two filler blocks 14 are vertically stacked and fixedly connected, the lower end cavity of the spherical cavity is positioned on the filler block 14 below, and the upper end cavity of the spherical cavity is positioned on the filler block 14 above. The present embodiment provides a specific form of the ball seat 5, that is, a spherical cavity is formed on the packing block 14, and when the ball seat is installed, the installation of the lower packing block 14, the steel ball 6, the upper packing block 14 is sequentially completed, and the fixed connection is realized by using bolts and the like. The preferred application is that the filler block 14 is made of high polymer material, and lubricating oil is injected into the spherical cavity of the filler block 14 below, so as to reduce the noise when the device is used.

The preferred scheme of this embodiment is: the anti-dust device also comprises a dust cover 16, wherein one end of the dust cover 16 is fixed on the top surface of the upper filler block 14, and the other end of the dust cover is fixed on the steel ball 6 or the stay bar 8. In this scheme, the dust cover 16 is used for shutoff steel ball 6 and bulb seat 5 interval's open end, in order to ensure the swing stroke of PCB under the effect of steel ball 6, the preferred application is that the upper end cover of dust cover 16 is established in the outside of vaulting pole 8 and is connected with the lateral wall seal of vaulting pole 8, the lower extreme of dust cover 16 covers the opening in spherical chamber on the below filler piece 14 and is connected with the up end seal of below filler piece 14.

The preferred scheme of this embodiment is: the bottom of the steel ball 6 is provided with a counterweight, and the gravity center of the counterweight is positioned on the axis of the stay bar 8. In this solution, the counterweight is used to restore the attitude of the U-shaped frame 9, namely: after the steel ball 6 is forced to rotate under the external force, the gravity center position of the counterweight is changed while the steel ball 6 rotates, and after the external force is removed, the steel ball 6 can roll back spontaneously under the action of the gravity center. The U-shaped frame 9 is preferably recovered to the position of opening facing right upwards under the action of the counterweight after the external force to the steel ball 6 is removed.

The preferred scheme of this embodiment is: the steel ball 6 is formed by welding an upper hemisphere and a lower hemisphere, the density of the upper hemisphere is smaller than that of the lower hemisphere, the supporting rod 8 is welded at the top of the upper hemisphere, and the lower hemisphere is used as a bottom counterweight of the steel ball 6. The present solution provides a solution by setting the upper hemisphere and the lower hemisphere of the steel ball 6 to have different densities so that the center of gravity of the steel ball 6 deviates from the center of the steel ball 6. The preferred application is: the lower hemisphere has higher density than the upper hemisphere, and the surface is more wear-resistant (the wear-resistant performance is not necessarily the material performance of the lower hemisphere material in implementation, and the wear-resistant purpose can be achieved through the surface treatment process).

The preferred scheme of this embodiment is: the plate clamp 12 is a door frame-shaped structure formed by a side plate and a middle plate, clamping grooves 13 are formed in the side plate and the middle plate, all clamping grooves 13 are located on the same plane, the clamping grooves 13 in the side plate are intersected with the clamping grooves 13 in the middle plate, and the clamping grooves 13 in the side plate extend to the free ends of the side plate. The scheme provides a scheme which is reliable in PCB fixation and simple in structure: the PCB to be fixed is inserted into the clamping groove 13 from the opening side of the board clamp 12, and the PCB can be locked on the board clamp 12 by the PCB locking screw provided on the side board after being inserted into the target position.

The foregoing is a further detailed description of the utility model in connection with specific preferred embodiments, and it is not intended that the utility model be limited to these descriptions. Other embodiments of the utility model, which are apparent to those skilled in the art to which the utility model pertains without departing from its technical scope, shall be covered by the protection scope of the utility model.

Claims

1. The utility model provides a PCB welding set, includes device platform (1), install U-shaped frame (9) on device platform (1), board clamp (12) are installed through pivot (11) to U-shaped frame (9), a serial communication port, be fixed with ball seat (5) on the mesa of device platform (1), be formed with spherical chamber on ball seat (5), be provided with steel ball (6) that can roll in spherical chamber in the spherical chamber, the top of steel ball (6) is located the outside in spherical chamber, still includes bottom and steel ball (6) top fixed connection's vaulting pole (8), U-shaped frame (9) are fixed in the top of vaulting pole (8).

2. A PCB soldering device according to claim 1, wherein the plate clips (12) are fixedly connected to the shaft (11), the shaft (11) is rotatably connected to the U-shaped frame (9), and further comprising a damper (10) mounted on the U-shaped frame (9), the damper (10) being such that the rotation of the shaft (11) is a damped rotation.

3. A PCB soldering device according to claim 1, wherein the stay (8) is provided with a grip (7).

4. A PCB soldering device according to claim 1, characterized in that the spherical cavity is provided with clamping plates (15) and that it further comprises a cylinder (4) for driving the clamping plates (15) to clamp the steel balls (6).

5. The PCB soldering apparatus of claim 4, further comprising a gas path controller (3) connected to the gas path of the cylinder (4), further comprising a foot controller (2), wherein the foot controller (2) is connected to the gas path controller (3) through a signal line, and the signal line is configured to implement: and transmitting an action signal of the pedal controller (2) to the air circuit controller (3), and controlling the air supply state of the air cylinder (4) by the air circuit controller (3) according to the action signal.

6. A PCB soldering device according to claim 1, wherein two packing blocks (14) are arranged in the ball socket (5), the two packing blocks (14) are stacked up and down and fixedly connected, the lower end cavity of the spherical cavity is located on the packing block (14) below, and the upper end cavity of the spherical cavity is located on the packing block (14) above.

7. The PCB soldering apparatus of claim 6 further comprising a dust boot (16), one end of the dust boot (16) being secured to the top surface of the upper filler block (14) and the other end being secured to the steel ball (6) or to the brace (8).

8. A PCB welding device according to any one of claims 1-7, characterized in that the bottom of the steel ball (6) is provided with a counterweight, the centre of gravity of which is located on the axis of the stay (8).

9. A PCB welding apparatus according to claim 8, characterized in that the steel ball (6) is welded by an upper hemisphere and a lower hemisphere, the density of the upper hemisphere is smaller than that of the lower hemisphere, the stay bar (8) is welded on top of the upper hemisphere, and the lower hemisphere is used as a bottom counterweight of the steel ball (6).

10. A PCB soldering device according to any one of claims 1 to 7, wherein the clip (12) is a frame-like structure formed by side and intermediate plates, each of which has a slot (13), all slots (13) being located on the same plane, the slots (13) in the side plate intersecting the slots (13) in the intermediate plate, the slots (13) in the side plate extending to the free ends of the side plate.