A positioning and calibration fixture for PCBA board processing

Abstract

This utility model relates to the field of PCBA board processing technology and discloses a positioning and calibration fixture for PCBA board processing, including a placement stage. A right-angle support frame is fixedly connected to the upper surface of the placement stage. This utility model drives a bidirectional lead screw to rotate via a drive motor, which in turn drives the threaded sleeve to move linearly towards the center along the limiting rod, realizing the synchronous clamping action of the clamping plate. By using a lever to pull the locking rod, it is disengaged from the mounting block. The mounting block can be removed by overcoming the magnetic attraction of the magnet. The operation is simple and quick, greatly shortening the time for changing the clamping plate and avoiding the time-consuming and laborious disassembly and assembly problems of the traditional bolt fixing method. In addition, the dual fixing method of the negative pressure suction cup and the clamping plate ensures that the PCBA board is firmly clamped and calibrated in the center of the placement stage. This not only effectively prevents processing errors caused by board offset and improves processing quality, but also avoids the problem of unstable clamping when dealing with boards with irregular shapes on both sides by the traditional single mechanical clamping method.

Description

Technical Field

[0001] This utility model relates to the field of PCBA board processing technology, and in particular to a positioning and calibration fixture for PCBA board processing. Background Technology

[0002] In the field of PCBA board processing, PCBA boards are the core components of electronic devices. Their processing accuracy and quality are directly related to the performance and reliability of electronic products. Positioning and calibration fixtures play a crucial role in the PCBA board processing process. They are mainly used to fix the PCBA boards and ensure that the boards can maintain a precise position and orientation during processing steps such as welding and testing.

[0003] Traditional PCBA board clamps mostly use bolts to fix the clamping components. While this design can provide a stable clamping effect, it has many inconveniences in actual operation. When it is necessary to change the clamping board of different shapes or sizes to adapt to the processing requirements of different PCBA boards, the operator must disassemble and install multiple bolts one by one. This process is not only time-consuming and labor-intensive, but also prone to damage to the clamp or insecure clamping due to improper operation. In addition, traditional clamps mostly use a single mechanical clamping method. When dealing with PCBA boards with irregular shapes on both sides, this single clamping method often cannot ensure the stable fixation of the board. The board is prone to displacement during the clamping process, which can not only lead to processing errors, but may also affect the quality and performance of the final product. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a positioning and calibration fixture for PCBA board processing.

[0005] This utility model is achieved using the following technical solution: A positioning and calibration fixture for PCBA board processing includes a placement platform. A right-angle support frame is fixedly connected to the upper surface of the placement platform. A drive motor is fixedly connected to the inner wall of the right-angle support frame. A bidirectional lead screw is fixedly connected to the output end of the drive motor. Threaded sleeves are threaded to both sides of the bidirectional lead screw. A storage sleeve is fixedly connected to the lower surface of the threaded sleeve. A magnet is provided on the inner wall of the storage sleeve. An installation block is snapped into the inside of the storage sleeve. A clamping plate is fixedly connected to the lower surface of the installation block. A recycling frame is fixedly connected to the surface of the storage sleeve. A telescopic spring is fixedly connected to the inner wall of the recycling frame. A movable plate is fixedly connected to the surface of the telescopic spring. A locking rod is fixedly connected to the surface of the movable plate. A lever is fixedly connected to the surface of the movable plate.

[0006] Through the above technical solution, the clamping plate can be quickly disassembled and assembled by the cooperation of the pry bar and the locking rod, which greatly improves the replacement efficiency of the clamping plate and avoids the time-consuming and laborious problem of replacing clamping parts when using multiple bolts for fixing in the traditional way. Personnel can quickly and flexibly adjust clamping plates of different sizes and shapes according to actual clamping needs to ensure that the plate can have a good clamping and positioning effect in the subsequent clamping process.

[0007] As a further improvement to the above solution, limit rods extend through both sides of the threaded sleeve, and the limit rods are fixedly connected to the inner wall of the right-angle support frame.

[0008] Through the above technical solution, the limiting rod restricts the movement direction of the threaded sleeve, ensuring that the threaded sleeve can move stably in a straight line when the bidirectional screw rotates, avoiding the threaded sleeve from deviating during the movement, and improving the stability and reliability of the fixture.

[0009] As a further improvement to the above solution, the storage sleeve has an embedded cavity inside, the magnet block is fixedly connected to the inner wall of the embedded cavity, and the embedded cavity is adapted to the mounting block.

[0010] The above technical solution allows the magnet to pre-position the mounting block, improving the convenience and accuracy of installation and ensuring that the mounting block can be accurately inserted into the storage sleeve.

[0011] As a further improvement to the above solution, a limiting groove is provided on the surface of the mounting block. The limiting groove is adapted to the locking rod, and the locking rod passes through the inside of the storage sleeve and the limiting groove.

[0012] The above technical solution, through the cooperation of the limiting groove and the locking rod, ensures that the mounting block is firmly locked inside the storage sleeve, preventing the mounting block from loosening during clamping, and improving the stability and reliability of the clamp.

[0013] As a further improvement to the above solution, a reinforcing sleeve is fixedly connected to the surface of the storage sleeve, and a groove adapted to the locking rod is opened on the surface of the reinforcing sleeve, and the locking rod is inserted into the inside of the groove.

[0014] Through the above technical solutions, the design of the reinforcing sleeve and groove further enhances the stability of the locking rod, ensuring that the locking rod will not loosen when locking the mounting block, thus improving the overall stability of the clamp.

[0015] As a further improvement to the above solution, a shaft block is fixedly connected to the lower surface of the right-angle support frame, and the bidirectional lead screw is rotatably connected to the surface of the shaft block.

[0016] As a further improvement to the above solution, a negative pressure pump is fixedly installed inside the placement platform, and a negative pressure suction cup is fixedly connected to the input end of the negative pressure pump.

[0017] Through the above technical solution, the dual fixing method of negative pressure suction cup and clamping plate effectively improves the clamping effect of the board and avoids the problem of unstable clamping when facing the irregular shape of the board by the traditional single mechanical clamping method. The negative pressure suction cup ensures that the board is clamped and fixed in the middle of the placement table, which facilitates the subsequent processing operation and improves the convenience and efficiency of processing.

[0018] As a further improvement to the above solution, the mounting block is made of metal, and the upper surface of the mounting block is in contact with the lower surface of the magnet block.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a drive motor to rotate a bidirectional lead screw, which in turn drives a threaded sleeve to move linearly towards the center along a limiting rod, achieving synchronous clamping of the clamping plate. A lever is used to pull the locking rod, disengaging it from the mounting block. Overcoming the magnetic attraction of the magnet allows the mounting block to be removed. The operation is simple and quick, significantly reducing the time required to replace the clamping plate and avoiding the time-consuming and laborious disassembly and assembly problems of traditional bolt-fixing methods. Furthermore, the dual fixing method of the negative pressure suction cup and the clamping plate ensures that the PCBA board is firmly clamped and aligned in the center of the placement platform. This not only effectively prevents processing errors caused by board misalignment and improves processing quality but also avoids the problem of unstable clamping when dealing with boards with irregular shapes on both sides, a common issue with traditional single mechanical clamping methods. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the clamping plate of this utility model; Figure 3 This is a schematic diagram of the structure of the bidirectional lead screw of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a cross-sectional view of the negative pressure pump of this utility model.

[0021] Explanation of key symbols: 1. Placement platform; 2. Right-angle support frame; 3. Drive motor; 4. Two-way lead screw; 5. Threaded sleeve; 6. Limiting rod; 7. Storage sleeve; 8. Embedded cavity; 9. Magnet block; 10. Mounting block; 11. Limiting groove; 12. Recycling frame; 13. Telescopic spring; 14. Movable plate; 15. Locking rod; 16. Paddle; 17. Reinforcing sleeve; 18. Clamping plate; 19. Shaft block; 20. Negative pressure pump; 21. Negative pressure suction cup. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example: Please combine Figure 1-5 This embodiment of a positioning and calibration fixture for PCBA board processing includes a placement platform 1. A right-angle support frame 2 is fixedly connected to the upper surface of the placement platform 1. A drive motor 3 is fixedly connected to the inner wall of the right-angle support frame 2. A bidirectional lead screw 4 is fixedly connected to the output end of the drive motor 3. Threaded sleeves 5 are threaded to both sides of the bidirectional lead screw 4. A storage sleeve 7 is fixedly connected to the lower surface of the threaded sleeve 5. A magnet block 9 is provided on the inner wall of the storage sleeve 7. An installation block 10 is snapped into the inside of the storage sleeve 7. A clamping plate 18 is fixedly connected to the lower surface of the installation block 10. A retrieval frame 12 is fixedly connected to the surface of the storage sleeve 7. A telescopic spring 13 is fixedly connected to the inner wall of the retrieval frame 12. A movable plate 14 is fixedly connected to the surface of the telescopic spring 13. A locking rod 15 is fixedly connected to the surface of the movable plate 14. A lever 16 is fixedly connected to the surface of the movable plate 14. By starting the drive motor 3, the bidirectional lead screw 4 is rotated, and the threaded sleeves 5 on both sides of the bidirectional lead screw 4 move towards the center along the axial direction of the right-angle support frame 2. The linear motion of the threaded sleeve 5, via the mounting block 10 engaged with the lower storage sleeve 7, drives the clamping plate 18 to move synchronously towards the center, thereby clamping and fixing the plate. When it is necessary to replace the clamping plate 18 with one of different shapes and sizes, the operator pulls the lever 16. The lever 16 drives the movable plate 14 to retract and compress the telescopic spring 13, causing the locking rod 15 to disengage from the storage sleeve 7 and the mounting block 10. The mounting block 10 is no longer locked. Subsequently, the operator pulls the mounting block 10 to overcome the magnetic attraction of the magnet 9. Remove the mounting block 10 from the storage sleeve 7 to complete the disassembly of the clamping plate 18. During installation, pull the lever 16 again to retract the locking rod 15, insert the mounting block 10 on the surface of the clamping plate 18 into the storage sleeve 7, and the magnet 9 pre-positions the mounting block 10. After releasing the lever 16, the telescopic spring 13 returns to its original position, and the locking rod 15 extends again, penetrating the storage sleeve 7 and the mounting block 10 to lock the mounting block 10 inside the storage sleeve 7, thus completing the installation of the clamping plate 18.

[0024] Limiting rods 6 pass through both sides of the threaded sleeve 5. The limiting rods 6 are fixedly connected to the inner wall of the right-angle support frame 2. The function of the limiting rods 6 is to restrict the movement direction of the threaded sleeve 5, so as to ensure that the threaded sleeve 5 can move linearly along the axis of the right-angle support frame 2 when the bidirectional screw 4 rotates, and to prevent the threaded sleeve 5 from deviating during the movement.

[0025] The storage sleeve 7 has an embedded cavity 8 inside, and a magnet block 9 is fixedly connected to the inner wall of the embedded cavity 8. The embedded cavity 8 is adapted to the mounting block 10. When the mounting block 10 is inserted into the storage sleeve 7, its top contacts the magnet block 9 in the embedded cavity 8, and the magnet block 9 pre-positions the mounting block 10.

[0026] The surface of the mounting block 10 is provided with a limiting groove 11, which is adapted to the locking rod 15. The locking rod 15 passes through the inside of the storage sleeve 7 and the limiting groove 11. When the locking rod 15 passes through the limiting groove 11, the mounting block 10 is locked inside the storage sleeve 7, ensuring that the mounting block 10 will not loosen.

[0027] A reinforcing sleeve 17 is fixedly connected to the surface of the storage sleeve 7. The surface of the reinforcing sleeve 17 has a groove that matches the locking rod 15. The locking rod 15 is inserted into the groove. During installation, after the locking rod 15 passes through the storage sleeve 7 and the limiting groove 11, its protruding part is inserted into the groove on the surface of the reinforcing sleeve 17 to further ensure the stability of the locking rod 15.

[0028] A shaft block 19 is fixedly connected to the lower surface of the right-angle support frame 2, and a two-way lead screw 4 is rotatably connected to the surface of the shaft block 19.

[0029] A negative pressure pump 20 is fixedly installed inside the placement platform 1. A negative pressure suction cup 21 is fixedly connected to the input end of the negative pressure pump 20. The negative pressure suction cup 21 is located in the middle of the placement platform 1. It moves synchronously towards the middle with the clamping plates 18 on both sides, which can ensure that the plate is clamped and fixed in the middle of the placement platform 1, making it convenient for personnel to carry out subsequent processing operations.

[0030] The mounting block 10 is made of metal, and its upper surface is in contact with the lower surface of the magnet block 9.

[0031] The implementation principle of a positioning and calibration fixture for PCBA board processing in this embodiment is as follows: When clamping the PCBA board, the drive motor 3 is started first, and the bidirectional lead screw 4 at its output end rotates accordingly. Since the thread directions on both sides of the bidirectional lead screw 4 are opposite, the threaded sleeve 5 will move linearly towards the center along the axial direction of the limiting rod 6 under the drive of the lead screw. The movement of the threaded sleeve 5 is transmitted through the storage sleeve 7 fixedly connected to its lower surface, thereby driving the mounting block 10 snapped inside the storage sleeve 7 and the clamping plate 18 fixedly connected to the lower surface of the mounting block 10 to move synchronously towards the center, ultimately achieving the clamping and fixing of the PCBA board.

[0032] When it is necessary to replace the clamping plate 18 with a different shape and size to adapt to the processing requirements of different PCBA boards, the operator first pulls the lever 16. After the lever 16 is under force, it drives the movable plate 14 to retract, and then squeezes the telescopic spring 13, so that the locking rod 15 fixedly connected to the surface of the movable plate 14 is disengaged from the storage sleeve 7 and the mounting block 10. At this time, the mounting block 10 is no longer locked. Subsequently, the operator pulls the mounting block 10 to overcome the magnetic attraction of the magnet block 9 in the inner wall of the storage sleeve 7 to the mounting block 10, and removes the mounting block 10 from the storage sleeve 7, thus completing the disassembly of the clamping plate 18.

[0033] When installing the new clamping plate 18, the operator pulls the lever 16 again to retract the locking lever 15 into the storage frame 12. At this time, the mounting block 10 on the surface of the clamping plate 18 is inserted into the storage sleeve 7. The top of the mounting block 10 contacts the magnet 9 in the embedded cavity 8, and the magnet 9 pre-positions the mounting block 10. Then, the operator releases the pull on the lever 16. Under the reset action of the telescopic spring 13, the locking lever 15 extends again, passing through the limiting groove 11 opened on the surface of the storage sleeve 7 and the mounting block 10. When the rod passes through the storage sleeve 7 and the limiting slot 11, its protruding part will insert into the groove opened on the surface of the reinforcing sleeve 17, ensuring that the locking rod 15 will not loosen when locking the mounting block 10, thereby completing the installation of the clamping plate 18. The mounting block 10 is made of metal, and its upper surface is in contact with the lower surface of the magnet block 9. The metal mounting block 10 has high strength and durability and can withstand large magnetic attraction force, ensuring a stable connection between the mounting block 10 and the magnet block 9 during the clamping process, further improving the stability and reliability of the clamp.

[0034] The negative pressure pump 20 fixedly installed inside the placement platform 1 and the negative pressure suction cup 21 fixedly connected to its input end provide another way to clamp and fix the PCBA board. The negative pressure suction cup 21 is located in the middle of the placement platform 1. It moves synchronously towards the middle with the clamping plates 18 on both sides, which can ensure that the PCBA board is firmly clamped and fixed in the middle of the placement platform 1, which is convenient for personnel to carry out subsequent processing operations.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A positioning and calibration fixture for PCBA board processing, characterized in that, The device includes a placement platform (1), a right-angle support frame (2) fixedly connected to the upper surface of the placement platform (1), a drive motor (3) fixedly connected to the inner wall of the right-angle support frame (2), a bidirectional lead screw (4) fixedly connected to the output end of the drive motor (3), threaded sleeves (5) threadedly connected to both sides of the bidirectional lead screw (4), a storage sleeve (7) fixedly connected to the lower surface of the threaded sleeve (5), a magnet block (9) provided on the inner wall of the storage sleeve (7), an installation block (10) snapped into the inside of the storage sleeve (7), a clamping plate (18) fixedly connected to the lower surface of the installation block (10), a recycling frame (12) fixedly connected to the surface of the storage sleeve (7), a telescopic spring (13) fixedly connected to the inner wall of the recycling frame (12), a movable plate (14) fixedly connected to the surface of the telescopic spring (13), a locking rod (15) fixedly connected to the surface of the movable plate (14), and a paddle (16) fixedly connected to the surface of the movable plate (14).

2. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: Both sides of the threaded sleeve (5) are penetrated by limiting rods (6), which are fixedly connected to the inner wall of the right-angle support frame (2).

3. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: The storage sleeve (7) has an embedded cavity (8) inside, and the magnet block (9) is fixedly connected to the inner wall of the embedded cavity (8). The embedded cavity (8) is adapted to the mounting block (10).

4. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: The mounting block (10) has a limiting groove (11) on its surface. The limiting groove (11) is adapted to the locking rod (15). The locking rod (15) passes through the storage sleeve (7) and the limiting groove (11).

5. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: The surface of the storage sleeve (7) is fixedly connected to a reinforcing sleeve (17), and the surface of the reinforcing sleeve (17) is provided with a groove that matches the locking rod (15), and the locking rod (15) is inserted into the inside of the groove.

6. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: The lower surface of the right-angle support frame (2) is fixedly connected to a shaft block (19), and the bidirectional lead screw (4) is rotatably connected to the surface of the shaft block (19).

7. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: A negative pressure pump (20) is fixedly installed inside the placement platform (1), and a negative pressure suction cup (21) is fixedly connected to the input end of the negative pressure pump (20).

8. The positioning and calibration fixture for PCBA board processing as described in claim 1, characterized in that: The mounting block (10) is made of metal, and the upper surface of the mounting block (10) is in contact with the lower surface of the magnet block (9).

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