Solder paste printing test equipment

Abstract

The utility model relates to solder paste printing test equipment, which belongs to the technical field of test equipment and comprises a rack, a round frame is arranged in the rack, two half gear rings are fixedly connected to the inner wall of the round frame, two servo motors a are arranged on one side of the round frame, gears are fixedly connected to output shafts of the servo motors a, and the gears are connected with the two half gear rings. The gears are connected with the corresponding half gear rings in a meshed mode. The beneficial effects of the utility model lie in that the output shaft of the servo motor a rotates to drive the gear to rotate, so that the gear rolls on the corresponding half gear ring, and under the action of the limiting assembly, the servo motor a and the industrial camera above the servo motor a can do semi-circumferential motion, so that the industrial camera can be driven to rotate. According to the solder paste detection device, the industrial cameras can be used for carrying out multi-point detection on solder paste at different positions on the PCB, the detection efficiency and accuracy of the solder paste are improved, the two industrial cameras are arranged, the two-sided solder paste on the PCB can be detected, and halfway shutdown overturning is not needed.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a solder paste printing testing device. Background Technology

[0002] As components are assembled on circuit boards, their density increases and solder joints become smaller. During the circuit board manufacturing process, solder paste is usually printed. However, it is an indisputable fact that the solder paste printing process produces many defects. Some reports even indicate that these defects account for 80% of the total number of defects. Another well-known fact is that the amount of solder paste is an important indicator for judging the quality and reliability of solder joints.

[0003] A search revealed a Chinese patent disclosure for a solder paste thickness testing device (authorization announcement number CN202255299U), comprising a base, a support plate, and a fixture for the object to be tested. A first linear guide rail is mounted on the base, and a second linear guide rail spans above the first linear guide rail. The support plate is mounted on the first linear guide rail, and the fixture for the object to be tested is mounted on the support plate. The solder paste thickness testing device also includes a first driving mechanism, an image acquisition mechanism, and a second driving mechanism. The first driving mechanism is connected to the support plate and drives the support plate to reciprocate along the first linear guide rail. The image acquisition mechanism is mounted on the second linear guide rail and reciprocates along the second linear guide rail under the drive of the second driving mechanism. The image acquisition mechanism includes an industrial camera, a laser, and a third driving mechanism that drives the industrial camera and laser to move vertically up and down. This patented technology has the advantages of automated and comprehensive testing of solder paste printing quality, improved production efficiency, and reduced costs.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that when the industrial camera moves, it only detects the height of a certain point on the solder paste on the product. When the height of the solder paste fluctuates, it is easy to cause inaccurate detection. In addition, the product generally needs to be printed on both sides. After the solder paste on one side of the product is tested, the product needs to be flipped over to test the other side. The process is cumbersome and reduces the efficiency of detecting printed solder paste. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a solder paste printing test device.

[0006] The technical solution of this utility model is as follows: a solder paste printing test device includes a frame, a circular frame is provided inside the frame, two semi-toothed rings are fixedly connected to the inner wall of the circular frame, two servo motors a are provided on one side of the circular frame, gears are fixedly connected to the output shafts of the servo motors a, and the gears are meshed with the corresponding semi-toothed rings. A support plate is fixedly connected to the side of the servo motors a away from the gears, and an industrial camera is fixedly installed on the inner wall of the support plate. A limit component is provided inside the circular frame, and a moving component is provided inside the frame.

[0007] By adopting the above technical solution, the rotation of the output shaft of servo motor a can drive the gear to rotate, so that the gear rolls on the corresponding half-tooth ring. Under the action of the limiting component, servo motor a and the industrial camera above it can make semi-circular motion. The industrial camera can be used to perform multi-point detection of solder paste at different positions on the PCB board, thereby improving the detection efficiency and accuracy of solder paste.

[0008] In a preferred embodiment, the movable component includes four brackets fixedly connected to the bottom of the inner wall of the frame, wherein two of the brackets are rotatably connected to a screw, and the other two brackets are fixedly connected to a fixing rod.

[0009] By adopting the above technical solution, the rotation of the screw can drive the threaded seat to move and adjust the detection position of the circular frame and the industrial camera.

[0010] In a preferred embodiment, the movable component further includes a threaded seat threaded to the outside of the screw, and a slide block slidably connected to the outside of the fixed rod. The threaded seat and the slide block are respectively fixedly connected to the two sides of the circular frame.

[0011] By adopting the above technical solution, and through the combined use of the slide and the fixing rod, the circular frame can be made more stable during the adjustment process.

[0012] In a preferred embodiment, the limiting component includes a limiting groove formed inside the circular frame and located on one side of the semi-tooth ring. A limiting ball is slidably installed inside the limiting groove. An L-shaped plate is fixedly connected to the outer side of each servo motor a, and one end of each L-shaped plate is fixedly connected to the corresponding limiting ball.

[0013] By adopting the above technical solution, and through the combined use of the limiting groove, L-shaped plate and limiting ball, high stability can be provided for servo motor a, so as to ensure the stable operation of the test structure.

[0014] In a preferred embodiment, clamping frames are provided at both ends inside the rack, and a PCB board is clamped between the two clamping frames.

[0015] By adopting the above technical solution, the PCB board can be clamped and fixed.

[0016] In one preferred embodiment, a servo motor b is fixedly mounted on the outer side of one of the brackets, and the output shaft of the servo motor b passes through the bracket and is fixedly connected to a screw.

[0017] By adopting the above technical solution, the rotation of the output shaft of the servo motor b can provide a power source for the screw.

[0018] In a preferred embodiment, cylinders are fixedly installed on both sides of the frame, and the piston rods of the cylinders extend into the interior of the frame and are fixedly connected to the corresponding clamping frame.

[0019] By adopting the above technical solution, the clamping position of the clamping frame can be adjusted by extending and retracting the piston rod of the cylinder.

[0020] In a preferred embodiment, a controller is externally connected to the outside of the frame, and the cylinder, servo motor a, servo motor b and industrial camera are all electrically connected to the controller.

[0021] By adopting the above technical solution, the controller can control the cylinder, servo motor a, servo motor b, and industrial camera to start and stop.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] 1. In this utility model, the rotation of the output shaft of the servo motor a drives the gear to rotate, so that the gear rolls on the corresponding semi-gear ring. Under the action of the limiting component, the servo motor a and the industrial camera above it can perform semi-circular motion. The industrial camera can be used to perform multi-point detection of solder paste at different positions on the PCB board, improving the detection efficiency and accuracy of solder paste. Moreover, there are two industrial cameras, which can detect double-sided solder paste on the PCB board without stopping and flipping in the middle, thus improving the detection efficiency.

[0024] 2. In this utility model, the rotation of the screw can drive the threaded seat to move and adjust the detection position of the circular frame and the industrial camera, so as to better detect the printed solder paste on the PCB board. Through the cooperation of the slide and the fixing rod, the circular frame can be made more stable during the adjustment process and can play an important role in limiting the movement of the circular frame. Attached Figure Description

[0025] Figure 1 This utility model provides an overall perspective view of a solder paste printing test device;

[0026] Figure 2This utility model provides a schematic diagram of the moving component of a solder paste printing test device;

[0027] Figure 3 This utility model provides a front view of a solder paste printing test device;

[0028] Figure 4 This utility model provides a solder paste printing test device. Figure 3 Enlarged view of point A in the middle.

[0029] Legend: 1. Frame; 2. Cylinder; 3. Clamping frame; 4. Support; 5. Fixing rod; 6. Slide; 7. Circular frame; 8. Gear; 9. Screw; 10. Threaded seat; 11. Half-tooth ring; 12. Servo motor a; 13. Limiting groove; 14. L-shaped plate; 15. Limiting ball; 16. Servo motor b; 17. Support plate; 18. Industrial camera. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-4 A solder paste printing test device includes a frame 1, with a circular frame 7 inside the frame 1. Two semi-toothed rings 11 are fixedly connected to the inner wall of the circular frame 7. Two servo motors a12 are arranged on one side of the circular frame 7, and gears 8 are fixedly connected to the output shafts of each servo motor a12. Each gear 8 meshes with a corresponding semi-toothed ring 11. A support plate 17 is fixedly connected to the side of the servo motor a12 away from the gears 8. Industrial cameras 18 are fixedly mounted on the inner wall of the support plate 17. A limit component is arranged inside the circular frame 7, and a moving component is arranged inside the frame 1. This device is used for testing products... When testing the printed solder paste, the rotation of the output shaft of the servo motor a12 drives the gear 8 to rotate, causing the gear 8 to roll on the corresponding semi-gear ring 11. Under the action of the limiting component, the servo motor a12 and the industrial camera 18 above it can perform semi-circular motion. The industrial camera 18 can be used to perform multi-point detection of solder paste at different positions on the PCB board, improving the detection efficiency and accuracy of solder paste. Moreover, there are two industrial cameras 18, which can detect double-sided solder paste on the PCB board without stopping and flipping it in the middle, thus improving the detection efficiency.

[0032] Specifically, the moving assembly includes four brackets 4 fixedly connected to the bottom of the inner wall of the frame 1. A screw 9 is rotatably connected between two brackets 4. The rotation of the screw 9 moves the threaded seat 10, adjusting the detection position of the circular frame 7 and the industrial camera 18 for better detection of the solder paste on the PCB board. A fixing rod 5 is fixedly connected between the other two brackets 4. The moving assembly also includes a threaded seat 10 threaded to the outside of the screw 9. Through the cooperation of the slide 6 and the fixing rod 5, the circular frame 7 is made relatively stable during adjustment, and its movement is controlled. Playing an important limiting role, the outer side of the fixed rod 5 is slidably connected to the slide block 6. The threaded seat 10 and the slide block 6 are respectively fixedly connected to the two sides of the circular frame 7. The limiting component includes a limiting groove 13 opened inside the circular frame 7 and located on one side of the semi-tooth ring 11. A limiting ball 15 is slidably installed inside the limiting groove 13. Through the cooperation of the limiting groove 13, the L-shaped plate 14 and the limiting ball 15, the servo motor a12 can be provided with high stability to ensure the stable operation of the test structure. The outer side of the servo motor a12 is fixedly connected to the L-shaped plate 14, and one end of the L-shaped plate 14 is fixedly connected to the corresponding limiting ball 15.

[0033] Specifically, each end of the frame 1 is equipped with a clamping frame 3, which can clamp and fix the PCB board. The PCB board is clamped between the two clamping frames 3. A servo motor b16 is fixedly installed on the outside of one of the brackets 4. The output shaft of the servo motor b16 passes through the bracket 4 and is fixedly connected to the screw 9. The rotation of the output shaft of the servo motor b16 can provide power to the screw 9. Cylinders 2 are fixedly installed on both sides of the frame 1. The piston rods of the cylinders 2 extend into the inside of the frame 1 and are fixedly connected to the corresponding clamping frame 3. The clamping position of the clamping frame 3 can be adjusted by the extension and retraction of the piston rods of the cylinders 2. A controller is externally connected to the outside of the frame 1. The cylinders 2, servo motors a12, b16 and industrial camera 18 are all electrically connected to the controller. The controller can control the cylinders 2, servo motors a12, b16 and industrial camera 18 to start and stop.

[0034] Working Principle: First, when testing the solder paste printed on the product, the operator places the PCB board between two clamping frames 3 and controls the cylinder 2 to start, thus clamping and fixing the clamping frames 3. Then, the servo motor b16 is started, and the rotation of the screw 9 drives the threaded seat 10 to move, adjusting the detection position of the circular frame 7 and the industrial camera 18 for better detection of the solder paste printed on the PCB board. Simultaneously, the servo motor a12 is started, and the rotation of the output shaft of the servo motor a12 drives... The moving gear 8 rotates, causing it to roll on the corresponding semi-tooth ring 11. Through the cooperation of the limiting groove 13, the L-shaped plate 14, and the limiting ball 15, the servo motor a12 can be provided with high stability to ensure the stable operation of the test structure. This allows the servo motor a12 and the industrial camera 18 above it to perform semi-circular motion. The industrial camera 18 can be used to perform multi-point detection of solder paste at different locations on the PCB board. Since there are two industrial cameras 18, double-sided solder paste on the PCB board can be detected without stopping and flipping the machine midway, thus improving detection efficiency.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A solder paste printing test apparatus comprising a frame (1), characterized in that: The inside of the rack (1) is provided with a round frame (7), the inner wall of the round frame (7) is fixedly connected with two half-tooth rings (11), one side of the round frame (7) is provided with two servo motors a (12), the output shaft of the servo motor a (12) is fixedly connected with a gear (8), the gear (8) is meshed with the corresponding half-tooth ring (11), the side of the servo motor a (12) away from the gear (8) is fixedly connected with a support plate (17), the inner wall of the support plate (17) is fixedly installed with an industrial camera (18), the inside of the round frame (7) is provided with a limiting assembly, and the inside of the rack (1) is provided with a moving assembly.

2. The solder paste printing test apparatus according to claim 1, wherein: The moving assembly comprises four supports (4) fixedly connected to the inner wall of the rack (1), two of the supports (4) are rotatably connected with a screw rod (9), and the other two supports (4) are fixedly connected with a fixed rod (5).

3. The solder paste printing test apparatus of claim 2, wherein: The moving assembly further comprises a threaded seat (10) threadedly connected to the outer side of the screw rod (9), the outer side of the fixed rod (5) is slidably connected with a sliding seat (6), and the threaded seat (10) and the sliding seat (6) are fixedly connected with the two sides of the round frame (7).

4. The solder paste printing test apparatus of claim 1, wherein: The limiting assembly comprises a limiting groove (13) formed in the inside of the round frame (7) and located on one side of the half-tooth ring (11), the inside of the limiting groove (13) is slidably installed with a limiting ball (15), the outer side of the servo motor a (12) is fixedly connected with an L-shaped plate (14), and one end of the L-shaped plate (14) is fixedly connected with the corresponding limiting ball (15).

5. The solder paste printing test apparatus of claim 1, wherein: Both ends of the inside of the rack (1) are provided with clamping frames (3), and the two clamping frames (3) clamp a PCB board.

6. The solder paste printing test apparatus of claim 2, wherein: The outer side of one of the supports (4) is fixedly installed with a servo motor b (16), and the output shaft of the servo motor b (16) penetrates the support (4) and is fixedly connected with the screw rod (9).

7. The solder paste printing test apparatus of claim 6, wherein: Both sides of the rack (1) are fixedly installed with air cylinders (2), the piston rods of the air cylinders (2) extend into the inside of the rack (1) and are fixedly connected with the corresponding clamping frames (3).

8. The solder paste printing test apparatus of claim 7, wherein: The outer side of the rack (1) is circumscribed with a controller, and the air cylinder (2), the servo motor a (12), the servo motor b (16) and the industrial camera (18) are electrically connected with the controller.

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