A flatness thickness detection device for PCB

Abstract

The utility model relates to a kind of flatness thickness detection devices for PCB, including rack, product fixture being located on the rack, XY axis servo movement module for driving the product fixture be connected on the rack and move in horizontal plane, scanner body and control host computer being located on the rack one side are co-linearly arranged on the upper and lower sides of the product fixture, the product fixture includes fixture body, PCB limiting slot hole is equipped on the fixture body, the upper end surface of the fixture body is located at the opening of the PCB limiting slot hole and is equipped with multiple ear plate limiting slots, one end of the ear plate limiting slot extends into the PCB limiting slot hole and forms opening. The device can scan and detect the upper and lower end surfaces of PCB by the two scanners bodies arranged up and down, without turning over PCB, thereby greatly improving the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the flatness and thickness of PCBs. Background Technology

[0002] Flatness inspection is sometimes called frontal flatness inspection or coplanarity inspection. Flatness inspection systems are specifically used to inspect the horizontal straightness, coplanarity, gaps, pin widths, and other indicators of pins of various electronic components such as IC chips and electronic connectors.

[0003] Application No. 202421913897.2 discloses a flatness testing device, including a frame, a fixture platform fixedly connected to the top of the frame, a finger groove on one side of the top of the fixture platform, multiple limit blocks fixedly connected to the top of the fixture platform, and multiple vacuum suction holes on the top surface of the fixture platform. Limit guide rails and drive guide rails are respectively provided on both sides of the top of the frame. Activating drive motor two controls the slide plate to move the testing instrument horizontally left and right on one side of the horizontal drive guide rail. Activating drive motor one controls the first support plate to move the testing instrument back and forth sequentially. Rotating the screw controls the mounting plate to move the testing instrument up and down. The height and position (front, back, left, right) of the testing instrument can be adjusted as needed, facilitating precise height adjustment and improving the adjustment effect. It is also suitable for adapting to workpieces of different sizes. However, this device can only test one side of the workpiece. When double-sided testing is required, the workpiece must be removed from the fixture and flipped, which is cumbersome. Therefore, this utility model proposes a flatness and thickness testing device for PCBs. Utility Model Content

[0004] The main objective of this invention is to provide a flatness and thickness detection device for PCBs to solve the problems mentioned in the background art.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a flatness and thickness detection device for PCBs, comprising a frame, a product fixture disposed on the frame, an XY-axis servo motion module connected to the frame for driving the product fixture to move in a horizontal plane, a scanner body collinearly disposed on the upper and lower sides of the product fixture, and a control host disposed on one side of the frame. The product fixture includes a fixture body, which is provided with a PCB limiting slot. The upper end face of the fixture body is provided with a plurality of ear plate limiting slots at the opening of the PCB limiting slot. One end of the ear plate limiting slot extends into the PCB limiting slot and forms an opening.

[0006] Preferably, the moving block of the XY axis servo moving module is vertically provided with a mounting plate, and a support plate is horizontally fixed on the front side of the mounting plate. The fixture body is connected to the support plate through a limiting component. A detection through hole is provided in the middle position of the support plate, and the projection of the PCB limiting slot hole in the horizontal plane falls within the projection range of the detection through hole.

[0007] Preferably, the limiting component includes multiple limiting blocks, which together form a fixture limiting groove. The fixture body is installed in the fixture limiting groove, and the limiting blocks are fixed to the support plate by bolts. The support plate is provided with multiple positioning screw holes.

[0008] Preferably, the scanner body is connected to the stand via an L-shaped bracket, and the L-shaped bracket is equipped with a height adjustment component for adjusting the height of the scanner body.

[0009] Preferably, the height adjustment assembly includes a vertical plate fixed to the end of the L-shaped bracket. Two sliders are slidably connected to the front of the vertical plate via a vertical slide rail. A movable plate is fixed to the front of the two sliders. The scanner body is fixed to the front of the movable plate. A connecting block is fixed to the front of the vertical plate. A screw is vertically rotatably provided on the connecting block. A knob is fixed to the top of the screw. A second connecting block is fixed to the back of the movable plate. The second connecting block has a screw hole. The screw passes through the screw hole and is threaded into the second connecting block.

[0010] Preferably, a fastening bolt is connected to one side of the slider, and the fastening bolt is screwed into the slider and abuts against the slide rail.

[0011] The beneficial effects of this utility model's technical solution are: The device can scan and inspect the top and bottom surfaces of a PCB by means of two scanner bodies set up one above the other, without having to flip the PCB, thus greatly improving the inspection efficiency. The XY axis servo moving module drives the product fixture to move in the plane to realize the scanning of the PCB by the scanner body, without having to set up moving modules for both scanner bodies, thus saving equipment costs. The product fixture is placed in a fixture limiting groove surrounded by multiple limiting blocks. The limiting blocks are fixed to the support plate by bolts, which makes it easy to adjust the number and position of the limiting blocks. This allows the fixture limiting groove to accommodate fixtures of various specifications, facilitating the inspection of PCBs of various specifications and enhancing practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the flatness and thickness detection device for PCBs, as shown in the embodiment.

[0013] Figure 2This is a schematic diagram of the product fixture structure.

[0014] Figure 3 This is a schematic diagram of the structure of a PCB flatness and thickness detection device.

[0015] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0016] The numbers in the image represent: 1. Stand; 2. Product fixture; 3. XY axis servo movement module; 4. Scanner body; 5. Barcode scanner; 6. Fixture body; 7. PCB limiting slot; 8. Ear plate limiting slot; 9. Mounting plate; 10. Support plate; 11. Limiting component; 12. Limiting block; 13. Fixture limiting slot; 14. Positioning screw hole; 15. L-shaped bracket; 16. Height adjustment component; 17. Vertical plate; 18. Slider; 19. Movable plate; 20. Connecting block; 21. Screw; 22. Fastening bolt. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments.

[0018] Example: like Figure 1-4 As shown, this utility model discloses a device for detecting the flatness and thickness of a PCB, comprising a frame 1, a product fixture 2 mounted on the frame 1, an XY-axis servo motion module 3 connected to the frame 1 for driving the product fixture 2 to move in a horizontal plane, a scanner body 4 collinearly mounted on the upper and lower sides of the product fixture 2, a barcode scanner 5 fixed to one side of the scanner body, and a control host mounted on one side of the frame 1. The product fixture 2 includes a fixture body 6, which has a PCB limiting slot 7. The upper end face of the fixture body 6 has multiple ear plate limiting slots 8 at the opening of the PCB limiting slot 7. One end of the limiting groove 8 extends into the PCB limiting groove hole 7 and forms an opening. The PCB to be inspected is placed into the PCB limiting groove hole 7, and the ear plate of the PCB is located in the ear plate limiting groove 8, thereby providing support for the PCB and preventing it from falling. The XY axis servo moving module 3 drives the product fixture 2 to move between the two scanner bodies 4, and then drives the product fixture 2 to move laterally. The two scanner bodies 4 respectively detect the flatness of the upper and lower end faces of the PCB. The scanner body 4 scans the product surface with a line laser to scan the height, position, shape, etc. of the components. The height of each component is calculated by the reflection of the light.

[0019] The XY-axis servo moving module 3 has a vertically mounted mounting plate 9 on its moving block. A support plate 10 is horizontally fixed to the front of the mounting plate 9. The fixture body 6 is connected to the support plate 10 through a limiting component 11. A detection through hole is provided in the middle of the support plate 10. The projection of the PCB limiting slot 7 in the horizontal plane falls within the projection range of the detection through hole, ensuring that the lower end face of the PCB in the PCB limiting slot 7 can be scanned.

[0020] The limiting component 11 includes multiple limiting blocks 12, which together form a fixture limiting groove 13. The fixture body 6 is installed in the fixture limiting groove 13. The limiting blocks 12 are fixed to the support plate 10 by bolts. The support plate 10 is provided with multiple positioning screw holes 14, so that the number and position of the limiting blocks 12 can be freely adjusted, allowing the limiting component 11 to adapt to fixtures and PCBs of various specifications.

[0021] The scanner body 4 is connected to the frame 1 via an L-shaped bracket 15. The L-shaped bracket 15 is connected to a height adjustment component 16 for adjusting the height of the scanner body 4, thereby allowing the height of the scanner body 4 from the workpiece to be freely adjusted.

[0022] The height adjustment assembly 16 includes a vertical plate 17 fixed to the end of the L-shaped bracket 15. Two sliders 18 are slidably connected to the front of the vertical plate 17 via a vertical slide rail. A movable plate 19 is fixed to the front of the two sliders 18. The scanner body 4 is fixed to the front of the movable plate 19. A connecting block 20 is fixed to the front of the vertical plate 17. A screw 21 is vertically rotatably mounted on the connecting block 20. A knob is fixed to the top of the screw 21. A second connecting block (not shown in the figure) is fixed to the back of the movable plate 19. The second connecting block has a screw hole. The screw 21 passes through the screw hole and is threaded into the second connecting block. Rotating the screw 21 drives the second connecting block to move the movable plate 19 and the scanner body 4 to slide vertically, thereby adjusting the height of the scanner body 4 for convenient adjustment and testing.

[0023] A fastening bolt 22 is connected to one side of the slider 18. The fastening bolt 22 is screwed into the slider 18 and abuts against the slide rail, thereby preventing the slider 18 from causing the scanner body 4 to slide down.

[0024] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A device for detecting the flatness and thickness of PCBs, characterized in that: The device includes a frame, a product fixture mounted on the frame, an XY-axis servo motion module connected to the frame for driving the product fixture to move in a horizontal plane, a scanner body collinearly mounted on the upper and lower sides of the product fixture, and a control host mounted on one side of the frame. The product fixture includes a fixture body, which has a PCB limiting slot. The upper end face of the fixture body has multiple ear plate limiting slots at the opening of the PCB limiting slot. One end of each ear plate limiting slot extends into the PCB limiting slot and forms an opening.

2. The flatness and thickness detection device for PCBs according to claim 1, characterized in that: The XY-axis servo moving module has a vertically mounted mounting plate on its moving block. A support plate is horizontally fixed to the front of the mounting plate. The fixture body is connected to the support plate through a limiting component. A detection through hole is provided in the middle of the support plate. The projection of the PCB limiting slot hole in the horizontal plane falls within the projection range of the detection through hole.

3. The flatness and thickness detection device for PCBs according to claim 2, characterized in that: The limiting component includes multiple limiting blocks, which together form a fixture limiting groove. The fixture body is installed in the fixture limiting groove. The limiting blocks are fixed to the support plate by bolts. The support plate is provided with multiple positioning screw holes.

4. The flatness and thickness detection device for PCBs according to claim 1, characterized in that: The scanner body is connected to the stand via an L-shaped bracket, and the L-shaped bracket is equipped with a height adjustment component for adjusting the height of the scanner body.

5. The flatness and thickness detection device for PCBs according to claim 4, characterized in that: The height adjustment assembly includes a vertical plate fixed to the end of the L-shaped bracket. Two sliders are slidably connected to the front of the vertical plate via a vertical slide rail. A movable plate is fixed to the front of the two sliders. The scanner body is fixed to the front of the movable plate. A connecting block is fixed to the front of the vertical plate. A screw is vertically rotatably mounted on the connecting block. A knob is fixed to the top of the screw. A second connecting block is fixed to the back of the movable plate. The second connecting block has a screw hole. The screw passes through the screw hole and is threaded into the second connecting block.

6. The flatness and thickness detection device for PCBs according to claim 5, characterized in that: A fastening bolt is connected to one side of the slider, and the fastening bolt is screwed into the slider and abuts against the slide rail.

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