Fixing device convenient for clamping PCB (Printed Circuit Board)

Abstract

The utility model discloses a fixing device convenient for clamping a PCB, and relates to the technical field of PCB processing, the fixing device convenient for clamping the PCB comprises a rack, a first frame plate and a second frame plate which are adjacent to each other, the first frame plate is used for supporting the bottom of the PCB, and the second frame plate is used for supporting the side part of the PCB; the clamping piece is arranged on the second frame plate, the clamping piece is provided with two opposite clamping ends, the clamping piece has a first state and a second state, in the first state, the two clamping ends are separated from the PCB, and in the second state, the two clamping ends clamp the PCB; and the operating mechanism is arranged on the side, away from the first frame plate, of the second frame plate, and the operating mechanism is in driving connection with the clamping piece and used for driving the clamping piece to be switched between the first state and the second state. According to the technical scheme provided by the utility model, the PCB is convenient to store and transport.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing technology, and in particular to a fixing device that facilitates clamping PCBs. Background Technology

[0002] In the production process of printed circuit boards (PCBs), the storage and transfer of boards are indispensable. Currently, the industry commonly uses stacked storage and transfer methods, where multiple PCBs are directly stacked together for handling and temporary storage. However, this traditional stacking method has significant drawbacks in practical applications. Because PCBs are inevitably subjected to external forces such as vibration and displacement during transportation, boards are prone to bumping into each other, leading to surface scratches, edge damage, or impaired electrical performance, thus affecting the overall quality of the PCB. Utility Model Content

[0003] The main purpose of this invention is to provide a fixing device for easily clamping PCBs, which is intended to facilitate the storage and transportation of PCBs.

[0004] To achieve the above objectives, this utility model proposes a fixing device for easily clamping PCBs, comprising:

[0005] A frame having a first frame plate and a second frame plate adjacent to each other, the first frame plate being used to support the bottom of a PCB and the second frame plate being used to support the sides of the PCB;

[0006] A clamping member is disposed on the second frame plate. The clamping member has two opposing clamping ends. The clamping member has a first state and a second state. In the first state, the two clamping ends are disengaged from the PCB. In the second state, the two clamping ends clamp the PCB.

[0007] An operating mechanism is disposed on the side of the second frame plate opposite to the first frame plate. The operating mechanism is drivenly connected to the clamping member to drive the clamping member to switch between the first state and the second state.

[0008] In one embodiment, the clamping member includes:

[0009] A fixing part is connected to the second frame plate, and a clamping end is formed on one end of the fixing part facing the PCB;

[0010] The movable part is hinged to the fixed part, and another clamping end is formed on one end of the movable part facing the PCB;

[0011] The first elastic element elastically connects the fixed part and the movable part, so that the two clamping ends tend to move closer to each other;

[0012] A limiting part is hinged to the movable part. In the first state, the limiting part is engaged with the fixed part, and in the second state, the limiting part is disengaged from the fixed part.

[0013] The second elastic element elastically connects the limiting part and the movable part, so that the limiting part tends to remain in the first state.

[0014] In one embodiment, the operating mechanism includes:

[0015] A first adjusting member has a first fixed end and a first movable end, the first fixed end being connected to the frame, and the first movable end moving along a first direction;

[0016] The second adjusting member has a second fixed end and a second movable end, the second fixed end is connected to the first movable end, and the second movable end moves along a second direction;

[0017] The third adjusting member has a third fixed end and a third movable end, the third fixed end is connected to the second movable end, and the third movable end moves along a third direction;

[0018] A clamping assembly is provided at the third moving end, the clamping assembly is used to abut against the movable part and drive the limiting part to rotate.

[0019] In one embodiment, the clamping assembly includes:

[0020] A first gripper is disposed at the third moving end, and the first gripper is used to abut against the movable part;

[0021] The second gripper is slidably disposed on the third moving end so as to move closer to or away from the first gripper along the first direction;

[0022] A driving component is located at the third moving end and is drivingly connected to the second gripper.

[0023] In one embodiment, the first adjusting member is configured as an electric cylinder; and / or, at least one of the second adjusting member, the third adjusting member, and the driving member is configured as a pneumatic cylinder.

[0024] In one embodiment, the first gripper is detachably connected to the third movable end; and / or, the second gripper is provided with a first strip hole extending along the second direction, and a fastener passes through the first strip hole and is connected to the drive member.

[0025] In one embodiment, the thickness of the first gripper and the second gripper decreases in the direction close to the second frame plate.

[0026] In one embodiment, the first frame plate and the second frame plate are arranged perpendicularly, and the end of the second frame plate away from the ground is inclined toward the side opposite to the first frame plate.

[0027] In one embodiment, the operating mechanism further includes a connector disposed on the second movable end, the connector having a connecting surface at the bottom, the connecting surface being perpendicular to the second frame plate, and the third adjusting member disposed on the connecting surface.

[0028] In one embodiment, the connector includes:

[0029] A first connecting plate is disposed at the second movable end. The first connecting plate is provided with a second strip-shaped hole, and the long axis of the second strip-shaped hole extends toward one side of the second frame plate.

[0030] A second connecting plate is disposed at the bottom of the first connecting plate. Fasteners pass through the second strip hole and are connected to the second connecting plate. The connecting surface is formed at the bottom of the second connecting plate.

[0031] In one embodiment, multiple clamping members are provided, arranged side by side and spaced apart. Each clamping member is used to clamp one PCB. Multiple marking portions are provided on the second frame plate, and one marking portion is provided on one side of each clamping member.

[0032] In the technical solution of this utility model, by setting a first frame plate and a second frame plate on the frame to support the sides and bottom of the PCB, the PCB can be initially positioned. In addition, a clamping component is set on the second frame plate, which can clamp the PCB in a second state to achieve the positioning of the PCB, ensure the stability of the PCB position during transportation, and prevent the PCB from being bumped. Furthermore, an operating mechanism is added to operate the clamping component, driving the clamping component to switch between fixing the PCB and releasing the PCB, which facilitates the operator to place and fix the PCB, and also facilitates the operator to pick up the PCB after reaching the designated position, thus improving the convenience of PCB transfer and storage. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the structure of the fixing device for facilitating PCB clamping provided by this utility model;

[0035] Figure 2 Another structural schematic diagram of the fixing device for facilitating PCB clamping provided by this utility model;

[0036] Figure 3 A schematic diagram of the clamping component in the PCB clamping device provided by this utility model;

[0037] Figure 4 A schematic diagram of the operating mechanism in the PCB clamping device provided by this utility model;

[0038] Figure 5 A schematic diagram of the connecting component in the PCB clamping device provided by this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the fixing device for facilitating PCB clamping provided by this utility model.

[0040] Explanation of icon numbers:

[0041] 10. PCB; 100. Frame; 110. First frame plate; 120. Second frame plate; 200. Clamping component; 210. Fixing part; 220. Movable part; 230. First elastic component; 240. Limiting part; 250. Second elastic component; 300. Operating mechanism; 310. First adjusting component; 320. Second adjusting component; 330. Third adjusting component; 340. Clamping assembly; 341. First gripper; 342. Second gripper; 343. Driving component; 344. First slot; 350. Connecting component; 351. First connecting plate; 352. Second connecting plate; 353. Second slot.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] To facilitate the storage and transportation of PCB10, this technical solution proposes a fixing device for clamping PCB10, comprising: a frame 100 having a first frame plate 110 and a second frame plate 120 adjacent to each other, the first frame plate 110 supporting the bottom of PCB10 and the second frame plate 120 supporting the sides of PCB10; a clamping member 200 disposed on the second frame plate 120, the clamping member 200 having two opposing clamping ends, the clamping member 200 having a first state and a second state, in the first state, the two clamping ends are detached from PCB10, and in the second state, the two clamping ends clamp PCB10; and an operating mechanism 300 disposed on the side of the second frame plate 120 opposite to the first frame plate 110, the operating mechanism 300 being drivenly connected to the clamping member 200 to drive the clamping member 200 to switch between the first state and the second state.

[0047] In the technical solution of this utility model, by setting a first frame plate 110 and a second frame plate 120 on the frame 100 to support the sides and bottom of the PCB10, the PCB10 can be initially positioned. In addition, a clamping member 200 is set on the second frame plate 120. The clamping member 200 can clamp the PCB10 in a second state to achieve the positioning of the PCB10, ensure the stability of the PCB10 during transportation, and prevent the PCB10 from being bumped. In addition, an operating mechanism 300 is added to operate the clamping member 200, driving the clamping member 200 to switch between fixing the PCB10 and releasing the PCB10, which makes it convenient for the operator to place and fix the PCB10, and also convenient for the operator to pick up the PCB10 after reaching the designated position, thus improving the convenience of PCB10 transfer and storage.

[0048] Specifically, such as Figure 1The image shows the machine for placing PCB10. The machine has a workstation where a trolley can be pushed into the workstation. A robotic arm located in the workstation places PCB10 onto the trolley. In addition, the machine also has an operating mechanism 300, which can drive the clamping parts 200 on the trolley to fix PCB10. Figure 2 The diagram shows an overall view of the fixing device for clamping PCB 10. In this embodiment, the device includes a frame 100, which serves as the main frame of the whole and is used to accommodate other components. The frame 100 has a first frame plate 110 and a second frame plate 120 arranged adjacent to each other. The first frame plate 110 can be arranged horizontally, and the second frame plate 120 is disposed at one end of the first frame plate 110 and can be arranged vertically. The first frame plate 110 and the second frame plate 120 together form an L-shaped structure on which PCB 10 can be placed. The first frame plate 110 can support the bottom of PCB 10, and the second frame plate 120... The 120 supports the side of PCB10, thus providing initial positioning for PCB10. Additionally, a clamping member 200 is provided on the second frame. The clamping member 200 can adopt a common clamp style, with two opposing clamping ends. By squeezing the clamping member 200, the two clamping ends can be driven to move closer or further apart, allowing PCB10 to be placed between the two clamping ends. Then, by operating the two clamping ends to hold PCB10, its position can be fixed; this is the second state. Of course, the user can also operate the two clamping ends to separate, releasing PCB10 for easy placement and removal. In this design, multiple clamping members 200 can be provided, arranged side-by-side and spaced apart, allowing for simultaneous fixing of multiple PCB10s, thus improving the overall PCB10 storage capacity of the machine. In addition, an operating mechanism 300 is provided on the frame 100. This operating mechanism 300 can be located on the side of the second frame plate 120 opposite to the first frame plate 110. The operating mechanism 300 can be a robotic arm. The clamping member 200 is operated by the operating mechanism 300 to adjust its state. When PCB10 needs to be placed, the clamping member 200 can first be adjusted to the first state by the operating mechanism 300. Then, PCB10 is placed on the first frame plate 110 and the second frame plate 120. Then, the clamping member 200 is adjusted to the second state by the operating mechanism to complete the fixation of PCB10. In the above solution, the clamping member 200 can improve the stability of PCB10 during transportation and prevent damage to PCB10. In addition, the operating mechanism 300 can facilitate user operation and improve work efficiency.

[0049] Figure 3A structural design of the clamping member 200 is shown. In this design, the clamping member 200 includes: a fixed portion 210 connected to the second frame plate 120, with one end of the fixed portion 210 facing the PCB 10 forming a clamping end; a movable portion 220 hinged to the fixed portion 210, with one end of the movable portion 220 facing the PCB 10 forming another clamping end; a first elastic member 230 elastically connecting the fixed portion 210 and the movable portion 220, causing the two clamping ends to tend to move closer to each other; a limiting portion 240 hinged to the movable portion 220, wherein in a first state, the limiting portion 240 is engaged with the fixed portion 210, and in a second state, the limiting portion 240 is disengaged from the fixed portion 210; and a second elastic member 250 elastically connecting the limiting portion 240 and the movable portion 220, causing the limiting portion 240 to tend to remain in the first state.

[0050] Specifically, the fixing part 210 serves as the base of the clamping member 200 and can be fixed to the second frame plate 120 by means of screwing or other methods. One end of the fixing part 210 protrudes towards the PCB10 as one of the clamping ends. A hinge is provided on the fixing part 210, and the movable part 220 can be hinged to the fixing part 210. The end of the movable part 220 facing the PCB10 can also protrude to form another clamping end. The movable part 220 can rotate around the fixing part 210 under the action of the hinge to realize the opening and closing action of the clamping end. The first elastic member 230 can be a torsion spring structure, with its two ends connected to the fixing part 210 and the movable part 220 respectively, to provide elastic force so that the two clamping ends tend to move closer to each other. When no external force is applied, the first elastic member 230 drives the clamping member 200 to remain in the second state to ensure the stable fixation of the PCB10. The limiting part 240 is a hook, with one end hinged to the end of the movable part 220 away from the clamping end. In the first state, the limiting part 240 can hook onto the fixed part 210 at the end away from the clamping end, thus limiting the fixed part 210 and keeping it stationary in the first state. When it is necessary to adjust to the second state, the limiting part 240 disengages from the fixed part 210, and the movable part 220 clamps the PCB10 inward under the action of the first elastic member 230. The second elastic member 250 can be a torsion spring or a spring sheet structure. The two ends of the second elastic member 250 connect the limiting part 240 and the movable part 220, and provide a clamping force to the limiting part 240 and the fixed part 210, so that the limiting part 240 remains engaged with the fixed part 210 when no external force is applied, preventing accidental adjustment of the clamping member 200 to the second state due to misoperation, and improving the stability of the clamping member 200.

[0051] Figure 4An example structure of the operating mechanism 300 is shown. In this design, the operating mechanism 300 includes: a first adjusting member 310 having a first fixed end and a first movable end, the first fixed end being connected to the frame 100, and the first movable end moving along a first direction; a second adjusting member 320 having a second fixed end and a second movable end, the second fixed end being connected to the first movable end, and the second movable end moving along a second direction; a third adjusting member 330 having a third fixed end and a third movable end, the third fixed end being connected to the second movable end, and the third movable end moving along a third direction; and a clamping assembly 340 disposed at the third movable end, the clamping assembly 340 being used to abut against the movable part 220 and drive the limiting part 240 to rotate. The first direction is... Figure 2 The left and right directions, the second direction is Figure 2 The vertical direction is the same as the horizontal direction, while the third direction is the direction closer to or further away from PCB10. The first adjusting member 310, the second adjusting member 320, and the third adjusting member 330 can all be extendable devices such as cylinders or electric cylinders. The clamping assembly 340 is mounted on the third moving end and includes two grippers and a driving component that drives the two grippers closer to or further away from each other. When it is necessary to adjust to the second state, the first adjusting member 310, the second adjusting member 320, and the third adjusting member 330 can drive the clamping assembly 340 to a position directly opposite the clamping member 200. Then, the clamping assembly 340 clamps the limiting part 240 and the movable part 220, causing the limiting part 240 to disengage from the fixed part 210. The clamping assembly 340 then maintains the clamping action, and the first adjusting member 310, the second adjusting member 320, and the third adjusting member 330 continue to adjust their positions, driving the movable part 220 and the limiting part 240 to move to the second position. The position corresponding to the first state is determined by the clamping assembly 340, which then releases the movable part 220 and the limiting part 240. When the first state needs to be adjusted, the clamping assembly 340 moves to be directly opposite the position of the movable part 220 and the limiting part 240, and clamps the movable part 220 and the limiting part 240. The first adjusting member 310, the second adjusting member 320, and the third adjusting member 330 drive the movable part 220 and the limiting part 240 to the position corresponding to the first state. Then, the movable part 220 is released, so that the movable part 220 hooks onto the fixed part 210, completing the position adjustment. By adopting the above adjustment action, it can be ensured that the clamping member 200 can reach the designated position every time the state is switched, ensuring that the PCB10 can be fully clamped or fully released, thus improving the reliability of use. In addition, in the above solution, the clamping component 340 can be adjusted in three directions to ensure that the clamping component 340 and the clamping member 200 can be accurately positioned. It also meets the requirement of adjusting each clamping member 200 in the solution with multiple clamping members 200, realizes the automated operation of fixing PCB10, and expands the application scenarios of the fixing device.

[0052] like Figure 6As shown, in one embodiment of the present invention, the clamping assembly 340 includes: a first gripper 341 disposed on the third moving end, the first gripper 341 being used to abut against the movable part 220; a second gripper 342 slidably disposed on the third moving end, so as to move closer to or further away from the first gripper 341 along a first direction; and a driving member 343 disposed on the third moving end and drivenly connected to the second gripper 342. In this design, the first gripper 341 and the second gripper 342 are arranged in parallel and extend vertically. The first gripper 341 can be fixed to the third moving end. During operation, the first gripper 341 can abut against the outside of the movable part 220 as a support point. The second gripper 342 can be slidably connected to the third moving end via a slide rail slider structure and can move along the first direction. By sliding, the second gripper 342 can move closer to or further away from the first gripper 341 to switch between the first and second states. In addition, a drive member 343 is provided at the third moving end. The drive member 343 can drive the second gripper 342 to move, thereby switching the state of the clamping assembly 340. In the above scheme, the sliding design of the second gripper 342 allows the clamping assembly 340 to adapt to the operational needs of clamping parts 200 of different sizes, improving compatibility. The drive member 343 can use devices such as an electric cylinder to provide precise linear motion, ensuring the stability and reliability of the clamping part 200 during operation.

[0053] In one embodiment of this utility model, the first adjusting member 310 is configured as an electric cylinder; and / or, at least one of the second adjusting member 320, the third adjusting member 330, and the driving member 343 is configured as a pneumatic cylinder. In the above solution, the electric cylinder can provide higher precision position adjustment. For the solution with multiple clamping members 200, it can ensure that the clamping assembly 340 is aligned with the clamping member 200. The second adjusting member 320 and the third adjusting member 330 are pneumatic cylinders, which reduces costs while ensuring that the position of the clamping assembly 340 is consistent in the second direction and the third direction, and also ensures that the final clamping assembly 340 and the clamping member 200 are accurately aligned.

[0054] In one embodiment of this utility model, the first gripper 341 and the third movable end are detachably connected; specifically, the first gripper 341 and the third movable end can be fastened with screws, thus allowing the first gripper 341 to be replaced to adapt to clamping parts 200 of different specifications; additionally, as Figure 6 In another embodiment of this utility model, the second gripper 342 is provided with a first strip hole 344, which extends along the second direction. The fastener passes through the first strip hole 344 and is connected to the drive member 343. Thus, after the fastener is loosened, the second gripper 342 can slide along the second direction to adjust its position, which facilitates the adjustment of the position of the second gripper 342 and can also meet the usage requirements of clamping members 200 of different specifications, thus improving versatility.

[0055] like Figure 6In one embodiment of this utility model, the thickness of the first gripper 341 and the second gripper 342 decreases in the direction near the second frame plate 120. This design makes the ends of the first gripper 341 and the second gripper 342 that mate with the clamping member 200 thinner, which not only reduces their own weight and facilitates driving, but also reduces the possibility of interference between the first gripper 341 and the second gripper 342 and other components on the fixing device.

[0056] like Figure 2 As shown, in one embodiment of this utility model, the first frame plate 110 and the second frame plate 120 are arranged perpendicularly, and the end of the second frame plate 120 away from the ground is tilted towards the side opposite to the first frame plate 110. This design allows the PCB 10 to tilt towards the second frame plate 120 when it is placed on the first frame plate 110 and the second frame plate 120. Under its own weight, the PCB 10 tends to slide along the upper surface of the first frame plate 110 towards the second frame plate 120, which further limits the PCB 10 and prevents it from falling off the frame 100.

[0057] like Figure 4 and Figure 5 In one embodiment of this utility model, the operating mechanism 300 further includes a connecting member 350, which is disposed at the second movable end. The connecting member 350 has a connecting surface at its bottom, which is perpendicular to the second frame plate 120. A third adjusting member 330 is disposed on the connecting surface. The third adjusting member 330 and the second adjusting member 320 can be connected through the connecting member 350. In order to adapt to the inclined arrangement of the first frame plate 110 and the second frame plate 120, the connecting surface at the bottom of the connecting member 350 is also inclined accordingly, and the connecting surface is perpendicular to the first frame plate 110, so that the third adjusting member 330 can extend and retract perpendicular to the second frame plate 120. This ensures that the clamping assembly 340 can be accurately aligned with the clamping member 200, thus ensuring the working reliability of the operating mechanism 300.

[0058] like Figure 5As shown, in this embodiment, the connector 350 includes two parts: a first connecting plate 351 and a second connecting plate 352. The first connecting plate 351 is located at the second moving end and has a second strip-shaped hole 353, the long axis of which extends toward the side of the second frame plate 120. The second connecting plate 352 is located at the bottom of the first connecting plate 351. A fastener passes through the second strip-shaped hole 353 and connects to the second connecting plate 352, with the connecting surface formed at the bottom of the second connecting plate 352. When the fastener is loosened, the second connecting plate 352 can slide along the long axis of the second strip-shaped hole 353, allowing the clamping assembly 340 on the second connecting plate 352 to move closer to or further away from the clamping member 200 to adjust its position. This allows for fine-tuning of the relative position between the clamping assembly 340 and the clamping member 200, ensuring that the clamping member 200 can be smoothly driven by the clamping assembly 340.

[0059] like Figure 2 As shown, in one embodiment of this utility model, multiple clamping members 200 are provided, arranged side by side and spaced apart. Each clamping member 200 is used to clamp one PCB 10. Multiple marking parts are provided on the second frame plate 120, and one marking part is provided on one side of each clamping member 200. In the above scheme, multiple clamping members 200 are arranged side by side, so the device can clamp multiple PCB 10 boards at the same time, which significantly improves the efficiency of transportation and storage. In addition, each clamping member 200 corresponds to a marking part, which makes it easy for the operator to quickly identify and locate, reduce operational errors, and improve work efficiency.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fixture for facilitating the clamping of a PCB, characterized by, include: A frame having a first frame plate and a second frame plate adjacent to each other, the first frame plate being used to support the bottom of a PCB and the second frame plate being used to support the sides of the PCB; A clamping member is disposed on the second frame plate. The clamping member has two opposing clamping ends. The clamping member has a first state and a second state. In the first state, the two clamping ends are disengaged from the PCB. In the second state, the two clamping ends clamp the PCB. An operating mechanism is disposed on the second frame plate and drivenly connected to the clamping member. The operating mechanism is used to drive the clamping member to switch between the first state and the second state.

2. The fixture of claim 1, wherein the fixture is configured to hold the PCB in a vertical orientation. The clamping element includes: A fixing part is connected to the second frame plate, and a clamping end is formed on one end of the fixing part facing the PCB; The movable part is hinged to the fixed part, and another clamping end is formed on one end of the movable part facing the PCB; The first elastic element elastically connects the fixed part and the movable part, so that the two clamping ends tend to move closer to each other; A limiting part is hinged to the movable part. In the first state, the limiting part is engaged with the fixed part, and in the second state, the limiting part is disengaged from the fixed part. The second elastic element elastically connects the limiting part and the movable part, so that the limiting part tends to remain in the first state.

3. The fixing device for facilitating PCB clamping as described in claim 2, characterized in that, The operating mechanism includes: A first adjusting member has a first fixed end and a first movable end, the first fixed end being connected to the frame, and the first movable end moving along a first direction; The second adjusting member has a second fixed end and a second movable end, the second fixed end is connected to the first movable end, and the second movable end moves along a second direction; The third adjusting member has a third fixed end and a third movable end, the third fixed end is connected to the second movable end, and the third movable end moves along a third direction; A clamping assembly is provided at the third moving end, the clamping assembly is used to abut against the movable part and drive the limiting part to rotate.

4. The fixture of claim 3, wherein the fixture is configured to hold the PCB in a vertical orientation. The clamping assembly includes: A first gripper is disposed at the third moving end, and the first gripper is used to abut against the movable part; The second gripper is slidably disposed on the third moving end so as to move closer to or away from the first gripper along the first direction; A driving component is located at the third moving end and is drivingly connected to the second gripper.

5. The fixture of claim 4, wherein the fixture is configured to hold the PCB in a vertical orientation. The first adjusting member is configured as an electric cylinder; and / or, at least one of the second adjusting member, the third adjusting member, and the driving member is configured as a pneumatic cylinder.

6. The fixture of claim 4, wherein the fixture is configured to hold the PCB in a vertical orientation. The first gripper is detachably connected to the third movable end; and / or, the second gripper is provided with a first strip hole, the first strip hole extends along the second direction, and a fastener passes through the first strip hole and is connected to the drive member; and / or, the thickness of the first gripper and the second gripper decreases in the direction close to the second frame plate.

7. The fixture of any one of claims 3 to 6, wherein the fixture is configured to hold a PCB in a vertical orientation. The first frame plate and the second frame plate are arranged perpendicularly, and the end of the second frame plate away from the ground is inclined toward the side opposite to the first frame plate.

8. The fixture of claim 7, wherein the fixture is configured to hold the PCB in a vertical orientation. The operating mechanism further includes a connector, which is disposed on the second moving end. The connector has a connecting surface at the bottom, which is perpendicular to the second frame plate. The third adjusting member is disposed on the connecting surface.

9. The fixture of claim 8, wherein the fixture is configured to hold the PCB in a vertical orientation. The connector includes: A first connecting plate is disposed at the second movable end. The first connecting plate is provided with a second strip-shaped hole, and the long axis of the second strip-shaped hole extends toward one side of the second frame plate. A second connecting plate is disposed at the bottom of the first connecting plate. Fasteners pass through the second strip hole and are connected to the second connecting plate. The connecting surface is formed at the bottom of the second connecting plate.

10. The fixture of claim 1, wherein, Multiple clamping members are provided, arranged side by side and spaced apart. Each clamping member is used to clamp one PCB. Multiple marking parts are provided on the second frame plate, and one marking part is provided on one side of each clamping member.

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