A clamping tool for PCB board

Abstract

The present invention relates to the technical field of clamping workpieces, and specifically discloses a clamping tool for a PCB board, comprising a moving platform, wherein the moving platform is connected to a conveying mechanism, the clamping tool also comprises an adjusting mechanism and a plurality of clamping mechanisms, the clamping mechanism comprising a connecting member, a clamping member, a tensioning member, a pad, a movable member and a limiting member, wherein the connecting member is connected to the adjusting mechanism, and two clamping members and two tensioning members are each provided, the two clamping members are rotatably matched with the connecting member, the two tensioning members are fixed with respect to the connecting member, the pads are simultaneously sleeved on the outer sides of each clamping member and each tensioning member, the clamping member is fixed with respect to the pads, the tensioning member is movably abutted with the pads, the clamping mechanism also comprises a driving component, the pads are deformed with the movement of the clamping member; the movable member is located between the two clamping members, and is slidably matched with the connecting member, the movable member is simultaneously fixed with the two end faces opposite to the pads, the limiting member limits the sliding state of the movable member, and the clamping tool can reduce the problem of middle depression generated when the PCB board is conveyed.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece clamping, and in particular to a clamping tool for a PCB board. Background Art

[0002] PCB board, or printed circuit board, is an indispensable basic component in modern electronic products. The design and production of PCB board involves circuit diagram design, wiring planning, cleaning, electroplating, etching, drilling, welding, etc. In the process involving liquid treatment, such as cleaning, electroplating, etching and other processes, bubbles may be generated. In order to ensure that these chemical treatment processes can be carried out evenly and effectively, and avoid affecting the quality of PCB board due to the presence of bubbles, it is necessary to transfer PCB board to defoaming treatment process for defoaming treatment. In this treatment operation, it is necessary to use clamping tooling to move PCB board. In the clamping and transfer operation of PCB board, in order to ensure the integrity and functionality of PCB board, it is necessary to minimize the damage to PCB board caused by transfer or clamping process.

[0003] The patent document with the authorization announcement number CN112008111B discloses a fully automatic conveying mechanism for a flexible circuit board drilling device and a conveying method thereof, which includes a conveying assembly and a clamping assembly. The clamping assembly is installed on the upper end of one side of the conveying assembly. When the flexible circuit board ejected by the cylinder rod approaches the outlet end of the square through groove, the conveying mechanism starts the hydraulic cylinder and uses the extension rod to drive the U-shaped clamping piece to descend, positioning the flexible circuit board in the inner cavity of the U-shaped clamping piece, and uses the trapezoidal pressing block and the square pressing block to press and limit the flexible circuit board respectively. After the circuit board is clamped, subsequent processing operations are performed;

[0004] The conveying mechanism provided in the above patent document can first transfer the flexible circuit board to the feed trough, use the rising cylinder rod to support the bottom surface of the circuit board and simultaneously lower the U-shaped clip to limit and fix the periphery of the flexible circuit board to be processed. The circuit board in the conveying mechanism is moved by the feed belt and the discharge belt, and the two ends of the circuit board are overlapped in the feed belt or the discharge belt. The conveying mechanism cannot transfer the circuit board in different processing steps.

[0005] The patent document with authorization announcement number CN112338245B discloses a PCB depaneling machine with automatic loading and unloading, including a depaneling processing mechanism, a PCB board feeding mechanism, a carrier feeding mechanism and a handling robot. The PCB board feeding mechanism is used to convey PCB boards, the carrier feeding mechanism is used to convey carriers, and the handling robot is used to load or unload carriers and PCB boards onto the depaneling processing mechanism. The depaneling machine provided by the patent document can transfer PCB boards through the handling robot.

[0006] In the production process of circuit boards, there are differences in the sizes and specifications of the circuit boards involved in the processing. When the handling robot handles the circuit boards, it usually fixes the ends of the circuit boards by clamping or vacuum adsorption. When using the handling robot to carry some larger or lower hardness circuit boards, the middle part of the circuit board is prone to depression, which in turn causes the middle part of the circuit board to be excessively squeezed, resulting in deformation of the circuit board or local functional damage. In addition, when the circuit board is defoaming, if the circuit board has a depression problem, there will be problems such as the defoaming agent cannot evenly cover the surface of the circuit board, and the defoaming agent stays at different positions on the surface of the circuit board for different times, which hinders the natural rupture and discharge of the foam, increases the complexity of the defoaming work, and affects the defoaming effect. Summary of the invention

[0007] The present invention provides a clamping tool for a PCB board, aiming to solve the problem in the related art that a circuit board is prone to depression in the middle during transportation, resulting in local deformation or damage of the circuit board, thus affecting the processing quality of the circuit board.

[0008] A clamping tool for a PCB board of the present invention comprises a mobile platform, the mobile platform is connected to a conveying mechanism, the conveying mechanism is used to convey the mobile platform to a circuit board processing station, the clamping tool also comprises an adjustment mechanism and a plurality of groups of clamping mechanisms, each of the clamping mechanisms is connected to the mobile platform through the adjustment mechanism, and the adjustment mechanism is used to adjust the relative position of each of the clamping mechanisms;

[0009] The clamping mechanism comprises a connecting member, a clamping member, a tensioning member, a pad and a movable member, wherein the connecting member is connected to the adjusting mechanism, and two clamping members and two tensioning members are provided, the two clamping members are rotatably matched with the connecting member, the two tensioning members are fixed with respect to the connecting member, the pad is simultaneously sleeved on the outside of each clamping member and each tensioning member, the clamping member is fixed with respect to the pad, the tensioning member is movably abutted with the pad, the clamping mechanism further comprises a driving component for driving the two clamping members to be relatively close to or away from each other, and the pad is deformed with the movement of the clamping member;

[0010] The clamping mechanism is also provided with a movable part, which is located between the two clamping parts and slidingly cooperates with the connecting part along the symmetry plane of the two clamping parts. The movable part is also fixed relative to the two opposite end faces of the pad. The connecting part is also provided with a limiting part for limiting the sliding state of the movable part.

[0011] The beneficial effects are: reducing the problem of depression in the middle position of the circuit board during transportation, reducing the risk of local deformation and functional damage of the circuit board, after each clamping mechanism moves to contact with the circuit board, the driving assembly drives the two clamping parts to be relatively close, and clamps and fixes the circuit board, and at the same time the limit part releases the limit state of the movable part, and the movable part pulls the pad in contact with the circuit board to move, so that after the clamping operation of the circuit board is completed, a horizontal pulling force is applied to the circuit board, which greatly reduces the possibility of depression in the middle position of the circuit board, ensures the processing quality of the circuit board during transportation and subsequent processing operations, and improves the overall processing quality of the circuit board.

[0012] Preferably, the clamping member comprises a connecting portion and a clamping portion, one end of the connecting portion is rotatably matched with the connecting member, the other end of the connecting portion is fixed to the clamping portion, and a tooth portion 1 is circumferentially provided at the end portion of the connecting portion connected to the connecting member;

[0013] The driving assembly comprises a driving member and an adjusting member. The driving member drives the adjusting member to slide back and forth in a horizontal direction. The adjusting member is provided with a second tooth portion in the horizontal direction. The second tooth portion is in active contact and meshing with the first tooth portion.

[0014] The beneficial effects are: improving the flexibility of the clamping mechanism for clamping and fixing the circuit board; when the driving member pushes the adjusting member to slide, the connecting part rotates under the meshing action of the tooth part one and the tooth part two, and drives the two clamping parts to be relatively close to clamp the circuit board; after the circuit board is delivered to the position, the driving member drives the adjusting member to move in the reverse direction, so that the connecting part can rotate in the reverse direction, and drive the two clamping parts to be relatively far away from each other to reset, thereby releasing the circuit board, thereby greatly improving the flexibility of the clamping mechanism.

[0015] Preferably, the limiting member is elastically slidably matched with the connecting member, and a lever is further provided on the connecting portion. The limiting member includes a limiting portion 1 and a limiting portion 2. The limiting portion 1 abuts against the movable member, and the limiting portion 2 abuts movably against the lever. When the connecting portion rotates until the lever abuts against the limiting portion 2, the limiting member is pushed to slide and the limiting portion 1 is disengaged from the movable member.

[0016] Preferably, with the side facing the circuit board as the front side, the end face of the rear side of the limiting part one is inclined from front to back in a direction away from the movable part, and the front side end face of the limiting part two is inclined from front to back in a direction close to the movable part, the rear side end face of the limiting part one is movably abutted against the front end of the movable part, and the lever is abutted against the front side end face of the limiting part two.

[0017] The beneficial effects are as follows: the consistency of the clamping and stretching operations of the clamping mechanism on the circuit board is improved, the lever rotates with the connecting part and movably abuts against the second limiting part, so that when the two clamping parts clamp the circuit board, the lever pushes the second limiting part and contacts the limit of the sliding state of a pair of movable parts of the limiting part, so that when the clamping mechanism performs the clamping operation, the circuit board is stretched, and finally the circuit board is clamped and conveyed in a flat state, thereby improving the stability of the state of the circuit board during the conveying process.

[0018] Preferably, the connecting member includes a frame and two mounting parts, the two mounting parts are fixed relative to the frame, the two tensioning members are respectively fixed on the two mounting parts, and the two clamping members are respectively rotatably connected to the two mounting parts.

[0019] Preferably, two moving parts are slidably provided on the moving platform, the clamping mechanisms have four groups, and any one of the moving parts is provided with two groups of clamping mechanisms, and the adjusting mechanism adjusts the two moving parts to be relatively close or far away from each other.

[0020] The beneficial effect is that by setting up multiple groups of clamping mechanisms, the stability of circuit board clamping is improved, so that the circuit board can be smoothly transported to the next processing step.

[0021] Preferably, the adjustment mechanism includes a driving source and a driving shaft, the driving source drives the driving shaft to rotate, both ends of the driving shaft are provided with threads with opposite spiral directions, and the two moving parts are respectively matched with the threads at both ends of the driving shaft.

[0022] The beneficial effect is that when the driving source drives the driving shaft to rotate, the two moving parts move closer or farther away synchronously, which not only satisfies the clamping and releasing actions of each clamping mechanism on the circuit board, but also facilitates the adjustment of the spacing of the clamping mechanism to adapt to the size of the circuit board, thereby realizing the clamping requirements of circuit boards of different sizes.

[0023] Preferably, the movable member is provided with two mounting blocks, and the connecting member cooperates with the mounting blocks in a lifting manner.

[0024] Preferably, the mobile platform cooperates with the conveying mechanism in lifting and lowering.

[0025] The beneficial effects of the present invention are:

[0026] (1) To reduce the problem of depression in the middle of the circuit board during transportation and reduce the risk of local deformation and functional damage to the circuit board, after each clamping mechanism moves to contact the circuit board, the driving assembly drives the two clamping parts to be relatively close and clamp the circuit board. At the same time, the limiter releases the limit state of the movable part, and the movable part pulls the pad in contact with the circuit board to move. After the clamping operation of the circuit board is completed, a horizontal pulling force is applied to the circuit board, which greatly reduces the possibility of depression in the middle of the circuit board, ensures the processing quality of the circuit board during transportation and subsequent processing operations, and improves the overall processing quality of the circuit board.

[0027] (2) To improve the consistency of the clamping and stretching operations of the clamping mechanism on the circuit board, the lever rotates with the connecting part and movably contacts the second limit part, so that when the two clamping parts clamp the circuit board, the lever pushes the second limit part and contacts the limit of the sliding state of a pair of movable parts of the limit part, so that when the clamping mechanism performs the clamping operation, the circuit board is stretched in the horizontal direction, and finally the circuit board is clamped and conveyed in a flat state, thereby improving the stability of the state of the circuit board during the conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the installation of the clamping tool relative to the defoaming equipment in the present invention.

[0029] Figure 2 It is a schematic diagram of the overall structure of the clamping tool in the present invention.

[0030] Figure 3 It is a schematic diagram of the overall structure of the clamping mechanism in the initial state.

[0031] Figure 4 It is a structural schematic diagram of the clamping mechanism in the initial state from another perspective.

[0032] Figure 5 It is a structural schematic diagram when the clamping mechanism is in a clamping state.

[0033] Figure 6 It is a structural schematic diagram from another perspective when the clamping mechanism is in a clamping state.

[0034] Figure 7 It is a schematic diagram of the structure of the connection member, the clamping member, the tensioning member and the driving assembly in the present invention.

[0035] Figure 8 It is a structural schematic diagram of the limiting member in the present invention.

[0036] Reference numerals:

[0037] 1. Defoaming equipment; 11. Conveying mechanism; 2. Mobile platform; 21. Moving part; 22. Mounting block; 23. Driving source; 24. Driving shaft; 3. Frame; 31. Mounting part; 32. Clamping part; 321. Connecting part; 322. Clamping part; 323. Tooth part 1; 324. Push rod; 33. Tensioning part; 34. Driving part; 341. Adjusting part; 342. Tooth part 2; 35. Pad; 36. Movable part; 37. Limiting part; 371. Limiting part 1; 372. Limiting part 2; 4. Circuit board. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figure 1 and Figure 2 As shown, the clamping tool for PCB board of the present invention comprises a mobile platform 2, an adjustment mechanism and a plurality of clamping mechanisms, wherein the clamping mechanism is preferably provided with four groups, the four groups of clamping mechanisms are connected to the mobile platform 2 through the adjustment mechanism, the four groups of clamping mechanisms are respectively used to clamp and fix the opposite sides of the circuit board 4, the adjustment mechanism is used to adjust the spacing between the four groups of clamping mechanisms to adapt to the circuit boards 4 of different sizes, the mobile platform 2 is used to connect the conveying mechanism 11, the conveying mechanism 11 in this embodiment belongs to the prior art, and the specific structure of the conveying mechanism 11 is not repeated here, the conveying mechanism 11 includes but is not limited to a chain conveyor or The conveying mechanism 11 drives the mobile platform 2 to move and conveys the circuit board 4 to the corresponding processing station. The processing station in this embodiment corresponds to the position where the defoaming device 1 is placed. The defoaming device 1 is used to perform the defoaming processing procedure of the circuit board 4. In other implementation operations, this processing station can also correspond to other processing procedures of the circuit board 4. The corresponding processing equipment can be set at the processing station. The mobile platform 2 can be lifted and lowered with the conveying mechanism 11 through a cylinder, so that the conveying mechanism 11 drives the mobile platform 2 to move within a suitable height range to avoid interference between the mobile platform 2 and the relevant equipment body during movement.

[0040] Two moving parts 21 are slidably provided on the moving platform 2, and two groups of the clamping mechanisms are provided on any of the moving parts 21. The adjusting mechanism adjusts the two moving parts 21 to be relatively close or far away from each other. The adjusting mechanism includes a driving source 23 and a driving shaft 24. The driving source 23 drives the driving shaft 24 to rotate. The driving source 23 can be a motor. The driving source 23 is fixed relative to the moving platform 2. A driving wheel is fixed on the driving end of the driving source 23. A driven wheel is fixedly sleeved on the driving shaft 24. A transmission belt is sleeved on the driving wheel and the driven wheel. When the driving source 23 is working, the driving wheel drives the driven wheel to rotate, and the driving wheel drives the driven wheel to rotate through the transmission belt. The driving shaft 24 rotates with the driven wheel. Threaded squares are provided at both ends of the driving shaft 24. The two moving parts 21 are respectively matched with the threads at both ends of the driving shaft 24 in opposite directions. When the driving shaft 24 rotates, the two moving parts 21 are driven to move closer or farther away synchronously, which satisfies the clamping and releasing actions of each clamping mechanism on the circuit board 4. At the same time, it is also convenient for the spacing of the clamping mechanism to adapt to the size of the circuit board 4 and adjust to meet the clamping requirements of circuit boards 4 of different sizes. In order to improve the stability of the movement of the two moving parts 21 relative to the moving platform 2, the moving platform 2 is also provided with a guide rail. Specifically, the moving platform 2 is provided with two relatively parallel guide rails, and the moving part 21 is provided with a slide groove that slidably cooperates with the guide rail, and the moving part 21 slidably cooperates with the guide rail on the moving platform 2 through the slide groove.

[0041] like Figures 2 to 7 As shown, the clamping mechanism includes a connecting member, a clamping member 32, a tensioning member 33, a pad 35 and a movable member 36. The connecting member includes a frame 3 and two mounting parts 31. A mounting block 22 is provided at each end of the length of the movable member 21. In order to facilitate the adjustment of the spacing between the two groups of clamping mechanisms connected to the same movable member 21, the mounting block 22 can be movably connected to the movable member 21. The connection method between the mounting block 22 and the movable member 21 includes but is not limited to threaded fit and sliding fit. In operation, by adjusting the relative position of the mounting block 22 and the movable member 21, the relative spacing between the two groups of clamping mechanisms on the same movable member 21 can be adjusted. In the actual production process, there are certain differences in the widths of the circuit boards 4 of different batches. By adjusting the relative position of the mounting block 22 and the movable member 21, stable clamping operation of circuit boards 4 of different widths can be achieved.

[0042] The frame 3 is lifted and lowered in coordination with the mounting block 22. Specifically, the frame 3 can be connected to the mounting block 22 via a cylinder. The two mounting portions 31 are fixed to the frame 3, and the two mounting portions 31 are arranged adjacent to each other in the longitudinal direction. The tensioning member 33 and the clamping member 32 are both provided with two, and the two tensioning members 33 are respectively fixed to the two mounting portions 31, and the two clamping members 32 are respectively rotatably coordinated with the two mounting portions 31. The clamping mechanism also includes a driving component, which is used to drive the two clamping members 32 to rotate relative to the mounting portion 31. The clamping members 32 are relatively When the mounting parts 31 are relatively close to or far away from each other when rotating, the gasket 35 is simultaneously sleeved on the outside of each tensioning member 33 and each clamping member 32. The material of the gasket 35 includes but is not limited to rubber. The gasket 35 is fixed to the clamping member 32 and is in active contact with the tensioning member 33. The movable member 36 is arranged between the two mounting parts 31. The movable member 36 is simultaneously fixed to the front and rear sides of the gasket 35 and is slidably matched with the two mounting parts 31 in the horizontal direction. The frame body 3 is also provided with a limit member 37 for limiting the sliding state of the movable member 36.

[0043] The clamping member 32 includes a connecting portion 321 and a clamping portion 322, wherein the connecting portion 321 is in the shape of a rod, and the two ends of the connecting portion 321 are in the shape of an arc, and the connecting portion 321 has two connecting portions, which are respectively arranged at the two ends of the length of the mounting portion 31, and one end of the connecting portion 321 is rotatably matched with the mounting portion 31, and the other end of the connecting portion 321 is fixed to the clamping portion 322, wherein the clamping portion 322 can be in the shape of a circular rod, and the end portion of the connecting portion 321 connected to the connecting member is circumferentially provided with a tooth portion 323, and the driving assembly includes a driving member 34 and an adjusting member. The driving member 34 can be an electric telescopic rod, the driving member 34 is fixed relative to the frame 3, the extended end of the driving member 34 is connected to the adjusting member 341, the side facing the circuit board 4 is the front side, the front end of the adjusting member 341 is provided with a second tooth portion 342, the second tooth portion 342 is in active contact and meshing with the first tooth portion 323, when the driving member 34 pushes the adjusting member 341 to move backward, under the meshing action of the first tooth portion 323 and the second tooth portion 342, the two connecting portions 321 are moved inward relative to the two mounting portions 31 The two clamping parts 322 are rotated and driven to be relatively close to each other until the two clamping parts 322 clamp the circuit board 4. When the two clamping parts 322 are relatively close to each other, the gasket 35 adapts to the circuit board 4 in the middle of the two clamping parts 322 to form a concave state and contacts the circuit board 4. At the same time, under the deformation of the clamping parts 322, the rear side of the gasket 35 abuts against the two tensioning members 33. In order to reduce the friction between the tensioning members 33 and the gasket 35, the positions of the two tensioning members 33 for abutting against the gasket 35 are arc-shaped surfaces. The portion between the tensioning members 33 is stretched and drives the movable member 36 to move backward. The movable member 36 pulls the pad 35 between the two clamping parts 322 to move backward. The circuit board 4 moves with the pad 35 under the action of the friction between it and the pad 35. After completing the clamping operation of the board body of the circuit board 4, the clamping mechanism applies a pulling force in the horizontal direction to the circuit board 4 to reduce the depression generated in the middle position of the circuit board 4 during the transportation process, reduce the local deformation and functional damage of the circuit board 4, and ensure the processing quality of the circuit board 4.

[0044] The limiting member 37 is slidably matched with the connecting member, and the limiting member 37 can be elastically connected to the connecting member through a spring. Figure 8The limiting member 37 includes the limiting portion 1 371 and the limiting portion 2 372. The rear end surface of the limiting portion 1 371 is in the shape of an inclined surface. The rear end surface of the limiting portion 1 371 is inclined from front to back in a direction away from the movable member 36. The rear end surface of the limiting portion 1 371 abuts against the movable member 36. The front end surface of the limiting portion 2 372 is in the shape of an inclined surface. The front end surface of the limiting portion 2 372 is inclined from front to back in a direction close to the movable member 36. The front end surface of the limiting portion 2 372 is in the shape of an inclined surface.

[0045] When the clamping mechanism recovers the initial state, the two connecting parts 321 rotate inwardly, driving the lever 324 to gradually contact the limiting part 2 372, and pushing the limiting part 37 to slide relative to the connecting part as a whole, so that the limiting part 37 moves away from the movable part 36 until the limiting part 1 371 is separated from the movable part 36, and the liner 35 at the rear part of the movable part 36 is tensioned to smoothly pull the movable part 36 backward, and when the limiting part 37 is away from the movable part 36, the spring is squeezed to store the spring force, so that after the clamping mechanism returns to the initial state, the front part of the liner 35 is re-tensioned, and the movable part 36 is pulled to move forward and reset, and the limiting part 37 is reset under the elastic force of the spring and is re-contacted with the movable part 36.

[0046] The specific working method of the clamping tool for PCB board provided by the present invention is as follows:

[0047] like Figure 3 and Figure 4 As shown, in the initial state, the two clamping members 32 of the clamping mechanism are both arranged longitudinally, and the front end surface of the liner 35 is in a vertical state under the stretching action of the two clamping members 32, and the rear side of the liner 35 does not contact the tensioning member 33. After the adjustment mechanism drives each of the clamping mechanisms to move into place, as shown in FIG. Figures 5 to 7 As shown, the front end surface of the pad 35 on the clamping mechanism is in contact with the side of the circuit board 4, and then the driving members 34 of each clamping mechanism work synchronously to push the adjusting member 341 to move backward, and under the meshing action of the tooth portion 1 323 and the tooth portion 2 342, the two clamping members 32 rotate forward until the clamping portion 322 contacts the circuit board 4 and clamps and fixes the circuit board 4;

[0048] During the process of the two clamping members 32 rotating toward the front side, the lever 324 on the connecting portion 321 gradually contacts the second limiting portion 372 and pushes the limiting member 37 as a whole away from the movable member 36, thereby releasing the limiting effect of the first limiting portion 371 and the movable member 36. The rear pad 35 is tensioned and pulls the movable member 36 backward, and the movable member 36 pulls the front pad 35 backward. Under the friction between the front pad 35 and the circuit board 4, the pulling force on the circuit board 4 is increased in the horizontal direction to reduce the depression in the middle position of the circuit board 4, reduce the problem of local deformation and functional damage of the circuit board 4 during the transportation process, and ensure the quality of the circuit board 4 in subsequent processing operations.

[0049] The clamping tool for PCB boards provided by the present invention reduces the problem of depression in the middle position of the circuit board during transportation, reduces the risk of local deformation and damage of the circuit board during transportation, and improves the quality of circuit board processing.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A clamping tool for a PCB board, comprising a mobile platform, the mobile platform is connected to a conveying mechanism, the conveying mechanism is used to convey the mobile platform to a circuit board processing station, characterized in that: The clamping tooling also includes an adjusting mechanism and multiple groups of clamping mechanisms, each clamping mechanism is connected to the mobile platform through the adjusting mechanism, and the adjusting mechanism is used to adjust the relative position of each clamping mechanism; the clamping mechanism includes a connecting piece, a clamping piece, a tensioning piece, a gasket and a movable piece, the connecting piece is connected to the adjusting mechanism, and two clamping pieces and two tensioning pieces are each provided, the two clamping pieces are rotatably matched with the connecting piece, the two tensioning pieces are fixed with respect to the connecting piece, the gasket is simultaneously sleeved on the outside of each clamping piece and each tensioning piece, the clamping piece is fixed with respect to the gasket, the tensioning piece is movably abutted with the gasket, the clamping mechanism also includes a driving assembly for driving the two clamping pieces to be relatively close to or away from each other, and the gasket is deformed with the movement of the clamping piece; the movable piece is located between the two clamping pieces, and slidably matched with the connecting piece along the symmetrical plane of the two clamping pieces, the movable piece is simultaneously fixed with respect to the two opposite end faces of the gasket, and the connecting piece is also provided with a limiting piece for limiting the sliding state of the movable piece; The clamping member comprises a connecting portion and a clamping portion, one end of the connecting portion is rotatably matched with the connecting member, the other end of the connecting portion is fixed with the clamping portion, and a tooth portion 1 is circumferentially arranged at the end portion where the connecting portion is connected to the connecting member; The driving assembly includes a driving member and an adjusting member. The driving member drives the adjusting member to slide back and forth in the horizontal direction. The adjusting member is provided with a second tooth portion in the horizontal direction. The second tooth portion is in active contact and meshing with the first tooth portion. The limiting member and the connecting member are elastically slidably matched, and a lever is also provided on the connecting part. The limiting member includes a limiting part 1 and a limiting part 2. The limiting part 1 abuts against the movable part, and the limiting part 2 abuts against the lever movably. When the connecting part rotates until the lever abuts against the limiting part 2, the limiting member is pushed to slide and the limiting part 1 is separated from the movable part. With the side facing the circuit board as the front side, the end face of the rear side of the limiting part one is inclined from front to back in the direction away from the movable part, and the front side end face of the limiting part two is inclined from front to back in the direction close to the movable part, the rear side end face of the limiting part one is movably abutted against the front end of the movable part, and the lever is abutted against the front side end face of the limiting part two.

2. The PCB clamping tool according to claim 1, characterized in that: The connecting member comprises a frame body and two mounting parts, the two mounting parts are fixed relative to the frame body, the two tensioning members are respectively fixed on the two mounting parts, and the two clamping members are respectively rotatably connected with the two mounting parts.

3. The PCB clamping tool according to claim 1, characterized in that: Two moving parts are slidably arranged on the moving platform, and there are four groups of clamping mechanisms. Two groups of clamping mechanisms are arranged on any moving part, and the adjusting mechanism adjusts the two moving parts to be relatively close or far away.

4. The PCB clamping tool according to claim 3, characterized in that: The adjusting mechanism comprises a driving source and a driving shaft. The driving source drives the driving shaft to rotate. The two ends of the driving shaft are provided with threads with opposite spiral directions. The two moving parts are respectively matched with the threads at the two ends of the driving shaft.

5. The PCB clamping tool according to claim 3, characterized in that: The moving part is provided with two mounting blocks, and the connecting part is lifted and lowered in coordination with the mounting blocks.

6. The PCB clamping tool according to claim 1, characterized in that: The mobile platform and the conveying mechanism are coordinated in lifting.

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