PCBA board calibration clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a PCBA (printed circuit board assembly) board calibration clamp which comprises a workbench, a supporting rod is fixedly connected to the rear side of the upper surface of the workbench, a mounting plate is fixedly connected to the top end of the supporting rod, and a placing table is fixedly connected to the middle of the upper surface of the workbench. During working, a PCBA board is placed on the placement table, the threaded rod is rotated clockwise to drive the T-shaped block to move backwards, the T-shaped block pushes the second transmission rod, the second transmission rod pushes the lifting plate to move downwards, the lifting plate drives the movable plate to move downwards, the movable plate pushes the first transmission rod, and the first transmission rod pushes the two sliding plates to move synchronously and get close to each other. The two clamping plates can be driven to be close to each other synchronously to clamp and fix the PCBA board, calibration is facilitated, clamping can be completed only by rotating the threaded rod, operation is simple, the two clamping plates are close to each other synchronously for clamping, a workpiece cannot be stressed unevenly, damage is reduced, and convenience is brought to calibration and clamping work of the PCBA board.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a PCBA board calibration fixture. Background Technology

[0002] PCBA is short for Printed Circuit Board Assembly. It means that the entire process of a blank PCB board going through SMT component mounting or DIP insertion is called PCBA. After the PCBA board is processed, it needs to be tested and calibrated. Testing and calibrating the PCBA board can effectively reduce the product's failure rate and improve product quality control. When calibrating the PCBA board, the product needs to be fixed on the calibration device by a fixture, and then the PCBA board is calibrated by an RF head.

[0003] Chinese patented invention CN209425277U discloses a PCBA calibration fixture, including a placement frame, an adjustment mechanism, a calibration adjustment structure, a second telescopic tube, and a test head structure. The adjustment mechanism is symmetrically arranged on the placement frame. The second telescopic tube is vertically arranged at the middle of the bottom of the top plate of the placement frame. The calibration adjustment structure is arranged at one end of the bottom of the second telescopic tube, and the test head structure is arranged on the calibration adjustment structure. The placement frame includes a base, support feet, a top plate, and a PCBA placement plate. The support feet are fixedly connected to the four corners of the bottom of the base. One end of the top plate of the base is connected to a horizontally arranged top plate through a column.

[0004] The current PCBA board calibration fixture requires rotating two lead screws to press the two ends of the PCBA board with two pressure plates. The operation is cumbersome and the synchronization is difficult to control. It is easy to cause uneven force on the PCBA board due to operation errors, resulting in damage and loss. Therefore, a new PCBA board calibration fixture is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a PCBA board calibration fixture to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PCBA board calibration fixture, comprising a worktable, a support rod fixedly connected to the rear side of the upper surface of the worktable, a mounting plate fixedly connected to the top of the support rod, a placement platform fixedly connected to the middle of the upper surface of the worktable, two fixing plates symmetrically fixedly connected to both sides of the upper surface of the worktable, two fixing rods symmetrically fixedly connected between adjacent sides of each pair of opposite fixing plates, a sliding plate slidably connected to the outer wall of the fixing rod, and a connecting rod fixedly connected to the upper surface of the sliding plate. A clamp is fixedly connected to the top of the rod. Two movable plates are symmetrically slidably connected to the upper surface of the workbench. A transmission rod is hinged to the top of the outer wall of the movable plate. The bottom end of the transmission rod is hinged to the outer wall of the slide plate. A lifting plate is fixedly connected to the bottom of the movable plate. A fixing block is fixedly connected to the front side of the lower surface of the workbench. A threaded rod is threaded to the outer wall of the fixing block. A T-shaped block is rotatably connected to the rear end of the threaded rod through a bearing. A second transmission rod is hinged to the lower surface of the T-shaped block. The bottom end of the second transmission rod is hinged to the upper surface of the lifting plate.

[0007] As a further preferred embodiment of this technical solution: a spring is fixedly connected between the sliding plate and the opposite side of the fixed plate, and two springs are symmetrically fixedly connected between the upper surface of the lifting plate and the lower surface of the worktable.

[0008] As a further preferred embodiment of this technical solution: the lower surface of the workbench is fixedly connected to a guide rail, and the outer side wall of the T-shaped block is slidably connected to the inner side wall of the guide rail.

[0009] As a further preferred embodiment of this technical solution: a throttle is fixedly connected to the front end of the threaded rod.

[0010] As a further preferred embodiment of this technical solution: the lower surface of the workbench is fixedly connected to four corners with support legs.

[0011] As a further preferred embodiment of this technical solution: the lower surface of the support leg is bonded with a rubber foot.

[0012] As a further preferred embodiment of this technical solution, anti-slip rubber strips are adhered to the opposite sides of both clamps.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In operation, the PCBA board is placed on the placement table. By rotating the threaded rod clockwise, the threaded rod drives the T-shaped block to move backward. The T-shaped block pushes the transmission rod two, which in turn pushes the lifting plate downward. The lifting plate then drives the movable plate downward, which in turn pushes the transmission rod one. The transmission rod one pushes the two sliding plates to move synchronously closer to each other, which in turn moves the two clamping plates to move synchronously closer to clamp and fix the PCBA board, facilitating calibration. Clamping can be completed simply by rotating the threaded rod. The operation is simple, and the synchronous clamping of the two clamping plates prevents uneven force on the workpiece, reduces damage, and brings convenience to the calibration and clamping of PCBA boards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the left-side structure of this utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a front view structural diagram of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the movable plate and the lifting plate in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the sliding plate and clamping plate in this utility model.

[0020] In the picture:

[0021] 1. Workbench; 2. Support rod; 3. Mounting plate; 4. Placement platform; 5. Fixing plate; 6. Fixing rod; 7. Slide plate; 8. Connecting rod; 9. Clamping plate; 10. Movable plate; 11. Transmission rod one; 12. Lifting plate; 13. Fixing block; 14. Threaded rod; 15. T-block; 16. Transmission rod two; 17. Spring one; 18. Guide rail; 19. Throttle; 20. Spring two; 21. Support leg; 22. Rubber feet; 23. Anti-slip rubber strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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 protection scope of the present utility model.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a PCBA board calibration fixture, including a workbench 1, a support rod 2 fixedly connected to the rear side of the upper surface of the workbench 1, a mounting plate 3 fixedly connected to the top of the support rod 2, a placement platform 4 fixedly connected to the middle of the upper surface of the workbench 1, two fixing plates 5 symmetrically fixedly connected to both sides of the upper surface of the workbench 1, two fixing rods 6 symmetrically fixedly connected to adjacent sides of each pair of opposite fixing plates 5, a sliding plate 7 slidably connected to the outer wall of the fixing rod 6, a connecting rod 8 fixedly connected to the upper surface of the sliding plate 7, and a clamping plate 9 fixedly connected to the top of the connecting rod 8. The sliding connection has two movable plates 10. A transmission rod 11 is hinged to the top of the outer wall of the movable plate 10. The bottom end of the transmission rod 11 is hinged to the outer wall of the slide plate 7. A lifting plate 12 is fixedly connected to the bottom of the movable plate 10. A fixing block 13 is fixedly connected to the front side of the lower surface of the worktable 1. A threaded rod 14 is threadedly connected to the outer wall of the fixing block 13. A T-shaped block 15 is rotatably connected to the rear end of the threaded rod 14 through a bearing. A transmission rod 2 16 is hinged to the lower surface of the T-shaped block 15. The bottom end of the transmission rod 2 16 is hinged to the upper surface of the lifting plate 12. The mounting plate 3 is used to install the RF head to calibrate the PCBA board.

[0025] Under the above settings, the PCBA board is placed on the placement platform 4. By rotating the threaded rod 14 clockwise, the threaded rod 14 drives the T-block 15 to move backward. The T-block 15 pushes the transmission rod 16, which in turn pushes the lifting plate 12 downward. The lifting plate 12 then drives the movable plate 10 downward, which in turn pushes the transmission rod 11. The transmission rod 11 pushes the two sliding plates 7 to move synchronously closer to each other, which in turn drives the two clamping plates 9 to move synchronously closer to clamp and fix the PCBA board, facilitating calibration. Clamping can be completed simply by rotating the threaded rod 14. The operation is simple, and the synchronous clamping of the two clamping plates 9 prevents uneven force on the workpiece, reduces damage, and brings convenience to the calibration and clamping work of the PCBA board.

[0026] In this example, specifically: a spring 17 is fixedly connected between the slide plate 7 and the opposite side of the fixed plate 5; two springs 20 are symmetrically fixedly connected between the upper surface of the lifting plate 12 and the lower surface of the worktable 1; when clamping the PCBA board, the lifting plate 12 moves downward and the springs 20 are stretched, while the clamping plates 9 move closer to each other and the springs 17 are compressed. When it is necessary to release the clamping state, the threaded rod 14 is rotated counterclockwise, and the tension of the springs 20 can assist the lifting plate 12 to return to its original position. Similarly, the pushing force of the springs 17 can assist the slide plate 7 to return to its original position.

[0027] In this example, specifically: a guide rail 18 is fixedly connected to the lower surface of the workbench 1, and the outer side wall of the T-block 15 is slidably connected to the inner side wall of the guide rail 18; the T-block 15 slides within the guide rail 18, which can prevent the T-block 15 from rotating with the threaded rod 14.

[0028] In this specific example, the front end of the threaded rod 14 is fixedly connected to a throttle 19, which facilitates turning the threaded rod 14.

[0029] In this example, specifically: support legs 21 are fixedly connected to the four corners of the lower surface of the workbench 1; to facilitate the support of the workbench 1.

[0030] In this specific example: a rubber foot 22 is bonded to the lower surface of the support leg 21; the rubber foot 22 can increase the anti-slip performance of the support leg 21.

[0031] In this specific example, anti-slip rubber strips 23 are glued to the opposite sides of both clamps 9; the anti-slip rubber strips 23 can increase friction and prevent the PCBA board from slipping.

[0032] The working principle of this utility model is as follows: The PCBA board is placed on the placement platform 4. By rotating the threaded rod 14 clockwise, the threaded rod 14 drives the T-shaped block 15 to move backward. The T-shaped block 15 pushes the transmission rod 16, which in turn pushes the lifting plate 12 to move downward. The lifting plate 12 drives the movable plate 10 to move downward. The movable plate 10 pushes the transmission rod 11, which in turn pushes the two sliding plates 7 to move synchronously and move closer to each other. This allows the two clamping plates 9 to move closer synchronously and clamp the PCBA board, making calibration convenient. Clamping can be completed simply by rotating the threaded rod 14. The operation is simple, and the synchronous clamping of the two clamping plates 9 prevents uneven force on the workpiece, reduces damage, and brings convenience to the calibration and clamping work of the PCBA board.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCBA board calibration fixture, characterized in that: The workbench (1) includes a support rod (2) fixedly connected to the rear side of its upper surface. A mounting plate (3) is fixedly connected to the top of the support rod (2). A placement platform (4) is fixedly connected to the middle of the upper surface of the workbench (1). Two fixing plates (5) are symmetrically fixedly connected to both sides of the upper surface of the workbench (1). Two fixing rods (6) are symmetrically fixedly connected between adjacent sides of each pair of opposite fixing plates (5). A sliding plate (7) is slidably connected to the outer wall of the fixing rod (6). A connecting rod (8) is fixedly connected to the upper surface of the sliding plate (7). A clamping plate (9) is fixedly connected to the top of the connecting rod (8). The upper surface of the workbench (1) is symmetrical. The sliding connection has two movable plates (10). A transmission rod (11) is hinged to the top of the outer wall of the movable plate (10). The bottom end of the transmission rod (11) is hinged to the outer wall of the slide plate (7). A lifting plate (12) is fixedly connected to the bottom of the movable plate (10). A fixing block (13) is fixedly connected to the front side of the lower surface of the worktable (1). A threaded rod (14) is threadedly connected to the outer wall of the fixing block (13). A T-shaped block (15) is rotatably connected to the rear end of the threaded rod (14) through a bearing. A transmission rod (16) is hinged to the lower surface of the T-shaped block (15). The bottom end of the transmission rod (16) is hinged to the upper surface of the lifting plate (12).

2. The PCBA board calibration fixture according to claim 1, characterized in that: A spring (17) is fixedly connected between the sliding plate (7) and the opposite side of the fixed plate (5), and two springs (20) are symmetrically fixedly connected between the upper surface of the lifting plate (12) and the lower surface of the workbench (1).

3. The PCBA board calibration fixture according to claim 2, characterized in that: The lower surface of the workbench (1) is fixedly connected to a guide rail (18), and the outer side wall of the T-shaped block (15) is slidably connected to the inner side wall of the guide rail (18).

4. The PCBA board calibration fixture according to claim 3, characterized in that: The front end of the threaded rod (14) is fixedly connected to a throttle (19).

5. The PCBA board calibration fixture according to claim 4, characterized in that: The workbench (1) has four fixed legs (21) at the four corners of its lower surface.

6. The PCBA board calibration fixture according to claim 5, characterized in that: The lower surface of the outrigger (21) is bonded with a rubber foot (22).

7. The PCBA board calibration fixture according to claim 6, characterized in that: Anti-slip rubber strips (23) are glued to the opposite sides of both clamps (9).

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