CN119176407B

CN119176407B - A clamping tool for PCB board

Info

Publication number: CN119176407B
Application number: CN202411689213.XA
Authority: CN
Inventors: 陈士丰
Original assignee: Suzhou Shengfeng Electronic Technology Co ltd
Current assignee: Suzhou Shengfeng Electronic Technology Co ltd
Priority date: 2024-11-25
Filing date: 2024-11-25
Publication date: 2025-05-02
Anticipated expiration: 2044-11-25
Also published as: CN119176407A

Abstract

The invention relates to the technical field of clamping of workpieces, in particular to a clamping tool for pcb boards, which comprises a moving platform, wherein the moving platform is connected with a conveying mechanism, the clamping tool also comprises an adjusting mechanism and a plurality of groups of clamping mechanisms, each clamping mechanism comprises a connecting piece, clamping pieces, tensioning pieces, gaskets, a movable piece and a limiting piece, the connecting piece is connected with the adjusting mechanism, the two clamping pieces and the tensioning pieces are respectively provided with two clamping pieces which are in rotary fit with each other relative to the connecting piece, the two tensioning pieces are fixed relative to the connecting piece, the gaskets are sleeved outside each clamping piece and each tensioning piece at the same time, the clamping pieces are fixed relative to the gaskets, the tensioning pieces are movably abutted with the gaskets, the gaskets deform along with the movement of the clamping pieces, the movable piece is positioned between the two clamping pieces and is in sliding fit with the connecting piece, the movable piece is fixed with two opposite end faces of the gaskets at the same time, and the limiting piece limits the sliding state of the movable piece.

Description

Clamping tool for pcb

Technical Field

The invention relates to the technical field of clamping of workpieces, in particular to a clamping tool for pcb boards.

Background

Pcb boards, i.e. printed circuit boards, are an indispensable basic component in modern electronic products, pcb board design and fabrication involve circuit diagram design, wiring planning, cleaning, electroplating, etching, drilling, soldering etc., pcb may generate bubbles during processes involving liquid treatment, such as cleaning, electroplating, etching etc., in order to ensure that these chemical treatment processes can be performed uniformly and effectively, to avoid influencing pcb board quality due to the existence of bubbles, pcb boards need to be transferred to defoaming treatment process to perform defoaming treatment, during the treatment operation, pcb boards need to be moved using clamping tools, during the clamping and transferring operation of pcb boards, and damage to pcb boards during transferring or clamping needs to be minimized in order to ensure pcb board integrity and functionality.

The patent document with the authorized bulletin number of CN112008111B discloses a full-automatic conveying mechanism for flexible circuit board drilling equipment and a conveying method thereof, the full-automatic conveying mechanism comprises a conveying component and a compressing component, wherein the compressing component is arranged at the upper end of one side of the conveying component;

The conveying mechanism provided by the patent document can convey the flexible circuit board into the feeding groove firstly, the rising cylinder rod is used for propping against the bottom surface of the circuit board, the U-shaped clamping piece descends simultaneously to limit and fix the periphery of the flexible circuit board to be processed, the circuit board is moved by the feeding belt and the discharging belt in the conveying mechanism, the two ends of the circuit board are lapped in the feeding belt or the discharging belt, and the conveying mechanism cannot transport the circuit board in different processing procedures.

Patent document of the grant bulletin number CN112338245B discloses a PCB board separator with automatic feeding and discharging, which comprises a board separating processing mechanism, a PCB feeding mechanism, a carrier feeding mechanism and a carrying manipulator, wherein the PCB feeding mechanism is used for conveying a PCB, the carrier feeding mechanism is used for conveying a carrier, the carrying manipulator is used for feeding or discharging the carrier and the PCB on the board separating processing mechanism, and the PCB can be transported by the carrying manipulator.

In the production process of circuit boards, the size and the specification of the processed circuit boards are different, the end parts of the circuit boards are usually fixed in a clamping or vacuum adsorption mode when the circuit boards are carried by the carrying manipulator, when the circuit boards with larger sizes or lower material hardness are carried by the carrying manipulator, the middle parts of the circuit boards are prone to generating dents, and further the middle parts of the circuit boards are excessively extruded, so that the circuit boards are deformed or have a problem of local functional damage.

Disclosure of Invention

The invention provides a clamping tool for pcb boards, which aims to solve the problems that in the related art, the middle position of a circuit board is easy to generate a dent in the conveying process, so that the circuit board is locally deformed or damaged, and the processing quality of the circuit board is affected.

The invention discloses a clamping tool for pcb, which comprises a moving platform, wherein the moving platform is connected with a conveying mechanism, the conveying mechanism is used for conveying the moving platform to a circuit board processing station, the clamping tool also comprises an adjusting mechanism and a plurality of groups of clamping mechanisms, each clamping mechanism is connected with the moving platform through the adjusting mechanism, and the adjusting mechanism is used for adjusting the relative position of each clamping mechanism;

The clamping mechanism comprises a connecting piece, clamping pieces, tensioning pieces, gaskets and movable pieces, wherein the connecting piece is connected with the adjusting mechanism, the two clamping pieces and the two tensioning pieces are respectively provided with two clamping pieces which are in running fit relative to the connecting piece, the two tensioning pieces are fixed relative to the connecting piece, the gaskets are sleeved outside the clamping pieces and the tensioning pieces at the same time, the clamping pieces are fixed relative to the gaskets, the tensioning pieces are in movable abutting connection with the gaskets, the clamping mechanism further comprises a driving assembly for driving the two clamping pieces to be relatively close to or far away from each other, and the gaskets deform along with the movement of the clamping pieces;

The clamping mechanism is further provided with a movable part, the movable part is located between the two clamping parts and is in sliding fit with the connecting part along the symmetrical planes of the two clamping parts, the movable part is fixed relative to the two opposite end faces of the gasket at the same time, and the connecting part is further provided with a limiting part for limiting the sliding state of the movable part.

The clamping mechanism has the beneficial effects that the problem that the middle position is sunken in the conveying process of the circuit board is reduced, the risks of local deformation and functional damage of the circuit board are reduced, after each clamping mechanism moves to be in contact with the circuit board, the driving assembly drives the two clamping pieces to be relatively close to each other and clamp and fix the circuit board, meanwhile, the limiting piece releases the limiting state of the movable piece, and the movable piece pulls the liner contacted with the circuit board to move, so that after the clamping operation of the circuit board is completed, a pulling force in the horizontal direction is applied to the circuit board, the possibility of the occurrence of the sunken middle position of the circuit board is greatly reduced, the processing quality of the circuit board in the conveying process and the subsequent processing operation is ensured, and the overall processing quality of the circuit board is improved.

Preferably, the clamping piece comprises a connecting part and a clamping part, one end of the connecting part is in running fit with the connecting part, the other end of the connecting part is fixed with the clamping part, and a tooth part I is arranged at the circumference of the end part of the connecting part connected with the connecting part;

The driving assembly comprises a driving piece and an adjusting piece, the driving piece drives the adjusting piece to slide back and forth along the horizontal direction, and the adjusting piece is provided with a second tooth part in the horizontal direction, and the second tooth part is in movable contact with and meshed with the first tooth part.

The clamping mechanism has the beneficial effects that the flexibility of clamping and fixing the circuit board by the clamping mechanism is improved, when the driving piece pushes the adjusting piece to slide, the connecting part rotates under the meshing action of the first tooth part and the second tooth part and drives the two clamping parts to be relatively close to the clamping circuit board, after the circuit board is conveyed in place, the driving piece drives the adjusting piece to reversely move, so that the connecting part reversely rotates and drives the two clamping parts to be relatively far away from reset, the circuit board is released, and the work flexibility of the clamping mechanism is greatly improved.

Preferably, the limiting piece is in elastic sliding fit with the connecting piece, the connecting part is further provided with a deflector rod, the limiting piece comprises a first limiting part and a second limiting part, the first limiting part is in butt joint with the movable piece, the second limiting part is in movable butt joint with the deflector rod, and when the connecting part rotates to the position when the deflector rod is in butt joint with the second limiting part, the first limiting part is pushed to slide and separate from the movable piece.

Preferably, the side facing the circuit board is taken as the front side, the end face of the first rear side of the limiting part is inclined from front to back in a direction away from the movable part, the front end face of the second limiting part is inclined from front to back in a direction close to the movable part, the rear end face of the first limiting part is movably abutted with the front end of the movable part, and the deflector rod is abutted with the front end face of the second limiting part.

The circuit board clamping and stretching device has the beneficial effects that the consistency of the clamping mechanism on the circuit board clamping and stretching operation is improved, the deflector rod rotates along with the connecting part and is movably abutted with the second limiting part, so that the deflector rod pushes the second limiting part and contacts the limiting part to limit the sliding state of the second limiting part when the two clamping parts clamp the circuit board, and when the clamping mechanism clamps the circuit board, the circuit board is stretched, and finally the circuit board is clamped and conveyed in a flat state, so that the stability of the state in the conveying process of the circuit board is improved.

Preferably, the connecting piece comprises a frame body and two mounting parts, wherein the two mounting parts are fixed relative to the frame body, the two tensioning pieces are respectively fixed on the two mounting parts, and the two clamping pieces are respectively connected with the two mounting parts in a rotating way.

Preferably, the moving platform is provided with two moving parts in a sliding manner, the clamping mechanisms are four groups, any one of the moving parts is provided with two groups of clamping mechanisms, and the two moving parts are adjusted to be relatively close to or far away from each other by the adjusting mechanism.

The circuit board clamping device has the beneficial effects that by arranging a plurality of groups of clamping mechanisms, the stability of clamping the circuit board is improved, and the circuit board is conveniently and stably conveyed to the next processing procedure.

Preferably, the adjusting mechanism comprises a driving source and a driving shaft, the driving source drives the driving shaft to rotate, threads with opposite spiral directions are arranged at two ends of the driving shaft, and the two moving parts are respectively in threaded fit with the two ends of the driving shaft.

The circuit board clamping mechanism has the beneficial effects that when the driving source drives the driving shaft to rotate, the two moving parts synchronously approach or separate, so that the clamping requirements of circuit boards with different sizes are realized when the clamping mechanisms clamp and release the circuit boards, and the size of the circuit boards is conveniently adjusted by the space adaptation of the clamping mechanisms.

Preferably, the moving member is provided with two mounting blocks, and the connecting member is in lifting fit with the mounting blocks.

Preferably, the moving platform is in lifting fit with the conveying mechanism.

The beneficial effects of the invention are as follows:

(1) The problem that the intermediate position that appears in the circuit board transportation process is sunken is reduced, the risk that local deformation and function are impaired appears in the circuit board is reduced, each fixture moves to after contacting with the circuit board, two clamping pieces of drive assembly drive are close to relatively, and carry out the centre gripping to the circuit board and fix, the spacing state to the movable part is relieved to the locating part simultaneously, the movable part pulling moves with the liner of circuit board contact, in order to apply the pulling force on a horizontal direction to the circuit board after accomplishing the centre gripping operation of circuit board, greatly reduced the possibility that the circuit board intermediate position appears sunken, ensure the processing quality of circuit board in transportation and follow-up processing operation, promote the whole processingquality of circuit board.

(2) The clamping mechanism is lifted to the consistency of circuit board clamping and stretching operation, the deflector rod rotates along with the connecting part to be in movable abutting connection with the second limiting part, so that when the circuit board is clamped by the two clamping parts, the deflector rod pushes the second limiting part and contacts with the limiting part to limit the sliding state of the pair of movable parts, when the clamping mechanism is used for clamping operation, the circuit board is stretched in the horizontal direction, finally, the circuit board is clamped and conveyed in a flat state, and the stability of the state in the conveying process of the circuit board is lifted.

Drawings

Fig. 1 is a schematic structural diagram of a clamping tool installed relative to defoaming equipment in the invention.

Fig. 2 is a schematic diagram of the overall structure of the clamping tool in the present invention.

Fig. 3 is a schematic view of the overall structure of the clamping mechanism in an initial state.

Fig. 4 is a schematic view of the structure of the clamping mechanism in an initial state at another view angle.

Fig. 5 is a schematic view of the structure of the clamping mechanism in the clamped state.

Fig. 6 is a schematic view of the clamping mechanism in a clamped state at another view angle.

FIG. 7 is a schematic view of the coupling, clamping, tensioning and driving assembly of the present invention.

Fig. 8 is a schematic structural view of a stopper in the present invention.

Reference numerals:

1. The device comprises a defoaming device, 11 parts, a conveying mechanism, 2 parts, a moving platform, 21 parts, 22 parts, a mounting block, 23 parts, a driving source, 24 parts, a driving shaft, 3 parts, a frame body, 31 parts, a mounting part, 32 parts, clamping parts, 321 parts, a connecting part, 322 parts, a clamping part, 323 parts, a first tooth part, 324 parts, a deflector rod, 33 parts, a tensioning part, 34 parts, a driving part, 341 parts, an adjusting part, 342 parts, a second tooth part, 35 parts, a gasket, 36 parts, a movable part, 37 parts, limiting parts, 371 parts, a first limiting part, 372 parts, a second limiting part and 4 parts and a circuit board.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 and fig. 2, the clamping fixture for pcb boards of the present invention includes a moving platform 2, an adjusting mechanism and a plurality of groups of clamping mechanisms, wherein the clamping mechanisms are preferably provided with four groups, the four groups of clamping mechanisms are connected with the moving platform 2 through the adjusting mechanism, the four groups of clamping mechanisms are respectively used for clamping and fixing two opposite sides of a circuit board 4, the adjusting mechanism is used for adjusting the intervals of the four groups of clamping mechanisms so as to adapt to the circuit boards 4 with different sizes, the moving platform 2 is used for connecting the conveying mechanism 11, the conveying mechanism 11 in the present embodiment belongs to the prior art, 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 a suspension conveyor, the conveying mechanism 11 drives the moving platform 2 to move, and conveys the circuit boards 4 to corresponding processing stations, the processing stations in the present embodiment correspond to the positions where the defoaming equipment 1 is placed, the defoaming equipment 1 is used for executing the processing procedures of the circuit boards 4, in other implementation operations, the defoaming equipment can also be matched with the moving platform 11 in the corresponding processing stations in the moving platform 2 at the appropriate ranges, and the moving platform 2 can be avoided by the driving the corresponding processing stations.

The movable platform 2 is provided with two movable pieces 21 in a sliding manner, any movable piece 21 is provided with two groups of clamping mechanisms, the two movable pieces 21 are regulated by the regulating mechanism to be relatively close to or far away from each other, the regulating mechanism comprises 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 relatively fixed to the movable platform 2, the driving end of the driving source 23 is fixedly provided with a driving wheel, the driving wheel is fixedly sleeved with the driving wheel, the driving wheel and the driven wheel are sleeved with a driving belt, the driving wheel is driven by the driving wheel to rotate through the driving belt during operation, the driving shaft 24 rotates along with driven wheels, threads with opposite thread directions are formed at two ends of the driving shaft 24, the two movable pieces 21 are respectively in threaded fit with two ends of the driving shaft 24, and when the driving shaft 24 rotates, the two movable pieces 21 are driven to be synchronously close to or far away from each other, the clamping mechanism is satisfied to clamp and release a circuit board 4, and meanwhile, the distance of the clamping mechanism is convenient to adjust the size of the circuit board 4, the driving mechanism is driven by the driving rail, the driving rail is driven by the driving board 4, the driving rail is matched with the two movable pieces 2, the movable platform is provided with the movable platform 2, and the movable platform is provided with two sliding guide rails 2.

As shown in fig. 2 to 7, the clamping mechanism includes a connecting member, a clamping member 32, a tensioning member 33, a gasket 35 and a movable member 36, the connecting member includes a frame 3 and two mounting portions 31, two mounting blocks 22 are respectively disposed at two ends of the length of the movable member 21, in order to facilitate adjustment of the distance between two groups of clamping mechanisms connected to the same movable member 21, the mounting blocks 22 may be movably connected to the movable member 21, and the connection manner of the mounting blocks 22 and the movable member 21 includes, but is not limited to, threaded fit and sliding fit, in operation, by adjusting the relative positions of the mounting blocks 22 and the movable member 21, the relative distances between two groups of clamping mechanisms on the same movable member 21 may be adjusted, and in the actual production process, the widths of circuit boards 4 in different batches may have certain differences, and stable clamping operations on circuit boards 4 in different widths may be realized by adjusting the relative positions of the mounting blocks 22 and the movable member 21.

The frame body 3 is in lifting fit with the mounting block 22, specifically, the frame body 3 can be connected with the mounting block 22 through an air cylinder, the two mounting portions 31 are fixed with the frame body 3, the two mounting portions 31 are arranged adjacently in the longitudinal direction, the two tensioning pieces 33 and the two clamping pieces 32 are respectively arranged, the two tensioning pieces 33 are respectively fixed with the two mounting portions 31, the two clamping pieces 32 are respectively in rotating fit with the two mounting portions 31, the clamping mechanism further comprises a driving assembly, the driving assembly is used for driving the two clamping pieces 32 to rotate relative to the mounting portions 31, the clamping pieces 32 are relatively close to or far away from each other relative to the mounting portions 31, the gasket 35 is sleeved outside the tensioning pieces 33 and the clamping pieces 32 at the same time, the material of the gasket 35 comprises but is not limited to rubber, the gasket 35 is fixed with the clamping pieces 32 and is in movable contact with the tensioning pieces 33, the movable piece 36 is arranged between the two mounting portions 31, the gasket 35 is simultaneously matched with the two sliding pieces 37 in the horizontal direction along the sliding direction of the two mounting portions 36, and the sliding frame body 3 is horizontally matched with the sliding portions 37.

The clamping member 32 comprises a connecting portion 321 and a clamping portion 322, the connecting portion 321 is in a rod shape, two ends of the connecting portion 321 are arc-shaped, two connecting portions 321 are respectively arranged at two ends of the length of the mounting portion 31, one end of the connecting portion 321 is in running fit with the mounting portion 31, the other end of the connecting portion 321 is fixed with the clamping portion 322, wherein the clamping portion 322 can be in a round rod shape, a tooth portion one 323 is circumferentially arranged at the end of the connecting portion 321 connected with the connecting portion, the driving assembly comprises a driving member 34 and an adjusting member 341, the driving member 34 can be an electric telescopic rod, the driving member 34 is fixed relative to the frame body 3, an extending end of the driving member 34 is connected with the adjusting member 341 so as to face one side where the circuit board 4 is located as a front side, a tooth portion two 342 is arranged at the front end of the adjusting member 341, when the second tooth 342 is movably contacted with the first tooth 323 and meshed with the second tooth 342, the driving member 34 pushes the adjusting member 341 to move to the rear side, under the meshing action of the first tooth 323 and the second tooth 342, the two connecting portions 321 rotate inwards relative to the two mounting portions 31 and drive the two clamping portions 322 to be relatively close, until the two clamping portions 322 clamp the circuit board 4, when the two clamping portions 322 are relatively close, the gasket 35 is adapted to the circuit board 4 between the two clamping portions 322 to form a concave state and contact with the circuit board 4, and simultaneously under the deformation of the clamping portions 322, the rear side of the gasket 35 is abutted with the two tensioning members 33, in order to reduce the friction action 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 pad 35 is stretched between the two tensioning members 33 and drives the movable member 36 to move backwards, the movable member 36 pulls the pad 35 between the two clamping portions 322 to move backwards, the circuit board 4 moves along with the pad 35 under the action of friction force between the movable member and the pad 35, and the clamping mechanism applies a pulling force on the circuit board 4 in the horizontal direction after the clamping operation of the board body of the circuit board 4 is completed, so that the recess generated in the middle position in the conveying process of the circuit board 4 is reduced, the problems of local deformation and functional damage of the circuit board 4 are reduced, and the processing quality of the circuit board 4 is ensured.

The limiting piece 37 is in sliding fit with the connecting piece, the limiting piece 37 can be elastically connected with the connecting piece through a spring, referring to fig. 8, the limiting piece 37 comprises a first limiting portion 371 and a second limiting portion 372, the end face of the rear side of the first limiting portion 371 is inclined from front to back in a direction away from the movable piece 36, the end face of the rear side of the first limiting portion 371 is abutted with the movable piece 36, the end face of the front side of the second limiting portion 372 is inclined from front to back in a direction approaching the movable piece 36, and the end face of the front side of the second limiting portion 372 is movably abutted with the deflector rod 324;

In the initial state, under the action of the elastic force of the spring, the first limit part 371 is located at the rear side of the movable part 36 and blocks the movable part 36 from moving towards the rear side, when the clamping mechanism clamps the circuit board 4, the two connecting parts 321 rotate inwards and drive the deflector rod 324 to gradually abut against the second limit part 372 and push the whole limit part 37 to slide relative to the connecting part, so that the limit part 37 moves towards the direction away from the movable part 36 until the first limit part 371 is separated from the movable part 36, the movable part 36 is smoothly pulled to move backwards when the liner 35 at the rear side part of the movable part 36 is tensioned, and the spring is pressed when the limit part 37 is far away from the movable part 36, so that after the clamping mechanism returns to the initial state, the front side part of the liner 35 is tensioned again and pulls the movable part 36 to move forwards and reset, and the limit part 37 returns to reset under the action of the elastic force of the spring and abuts against the movable part 36 again.

The specific working mode of the clamping tool for the pcb provided by the invention is as follows:

as shown in fig. 3 and fig. 4, in the initial state, the two clamping members 32 of the clamping mechanism are longitudinally arranged, the front end surfaces of the gaskets 35 are vertical under the stretching action of the two clamping members 32, the rear sides of the gaskets 35 are not contacted with the tensioning members 33, after the adjusting mechanism drives each clamping mechanism to move in place, as shown in fig. 5 to fig. 7, the front end surfaces of the gaskets 35 on the clamping mechanism are attached to the side edges of the circuit board 4, then the driving members 34 of each clamping mechanism synchronously work to push the adjusting members 341 to move to the rear sides, and under the meshing action of the first tooth 323 and the second tooth 342, the two clamping members 32 rotate to the front sides until the clamping portions 322 are contacted with the circuit board 4 and clamp and fix the circuit board 4;

In the process of rotating the two clamping members 32 to the front side, the driving lever 324 on the connecting portion 321 gradually contacts with the second limiting portion 372, pushes the whole limiting member 37 to be far away from the movable member 36, releases the limiting effect of the first limiting portion 371 and the movable member 36, stretches and pulls the movable member 36 to move backwards by the rear side gasket 35, pulls the front side gasket 35 to move backwards by the movable member 36, and increases the pulling force on the circuit board 4 in the horizontal direction under the friction force of the front side gasket 35 and the circuit board 4, so as to reduce the concave generated at the middle position of the circuit board 4, reduce the problems of local deformation and function damage of the circuit board 4 in the conveying process, and ensure the quality of the circuit board 4 in the subsequent processing operation.

The clamping tool for the pcb reduces the problem of middle position sinking in the transportation process of the circuit board, reduces the local deformation and damage risks of the circuit board in the transportation process, and improves the processing quality of the circuit board.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the 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 tool also includes an adjustment mechanism and multiple groups of clamping mechanisms, each clamping mechanism is connected to the mobile platform through the adjustment mechanism, and the adjustment mechanism is used to adjust the relative position of each clamping mechanism; the clamping mechanism includes a connecting member, a clamping member, a tensioning member, a pad and a movable member, the connecting member is connected to the adjustment mechanism, the clamping member and the tensioning member are each provided with two, and the two clamping members are relative to the connecting member Rotationally matched, the two tensioning members are fixed relative to the connecting member, the pads are simultaneously sleeved on the outside of each clamping member and each tensioning member, the clamping member is fixed relative to the pads, the tensioning member and the pads are movably abutted, the clamping mechanism also includes a driving assembly for driving the two clamping members to be relatively close or away, and the pads are deformed with the movement of the clamping members; the movable member is located between the two clamping members, and is slidably matched with the connecting member along the symmetric planes of the two clamping members, the movable member is simultaneously fixed relative to the two opposite end faces of the pads, and a limiting member for limiting the sliding state of the movable member is also provided on the connecting member;

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 clamping tool for PCB board according to claim 1 is characterized in that 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.

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

4. The clamping tool for PCB board according to claim 3 is characterized in that the adjustment mechanism includes a driving source and a driving shaft, the driving source drives the driving shaft to rotate, and the two 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 the two ends of the driving shaft.

5. The clamping fixture for PCB board according to claim 3 is characterized in that two mounting blocks are provided on the moving part, and the connecting part cooperates with the mounting blocks in lifting and lowering.

6. The clamping tool for PCB board according to claim 1 is characterized in that the moving platform and the conveying mechanism are coordinated in lifting and lowering.