A circuit board double-sided hole position detection device

Abstract

The present invention relates to the technical field of circuit board detection, and discloses a double-sided hole position detection device for a circuit board, comprising a workbench, support plates are fixedly connected to both sides of the workbench, a moving rod is slidably connected to the inner wall of the top of the support plate, and an ultrasonic detector is fixedly connected to the bottom end of the moving rod; the inner wall of the workbench is provided with a clamping device for clamping and limiting the circuit board. The present invention can realize the double-sided hole position inspection of the circuit board, and at the same time, the hole position deviation on the circuit board can be accurately detected by ultrasonic detection of the hole position, and the subsequent robot arm is determined to clamp the circuit board to the next process, rework process or scrap process according to the hole position deviation, so as to improve the detection accuracy of the device, and the clamping plate will clamp the circuit board to prevent the circuit board from shaking during the ultrasonic detection process, thereby affecting the ultrasonic detection result.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board detection, in particular to a circuit board double-sided hole position detection device. Background Art

[0002] Circuit board hole position detection is one of the important steps in the circuit board manufacturing process. Its purpose is to ensure that all drilling positions and hole diameters on the circuit board meet the design requirements. Most of the existing detection is done manually or using detection tooling.

[0003] The patent with announcement number CN211178373U discloses a detection device for detecting the hole position of a circuit board; it belongs to the technical field of circuit board detection equipment; its technical points include a frame, a pair of baffles, a conveying device and a detection device, the detection device includes a first fixed bracket, a second fixed bracket, a cross bar, a rotating assembly, a fixing, a driving cylinder, and four groups of sliding assemblies. The lower ends of the first and second fixed brackets are fixedly connected to the frame and are respectively located on both sides of the conveying device. The two ends of the cross bar are respectively fixedly connected to the first and second fixed brackets through fixings and rotating assemblies. The driving cylinder is fixedly connected to one side of the cross bar. The output end of the driving cylinder is connected to a fixed plate. The four groups of sliding assemblies are respectively arranged at the four corners of the fixed plate. The lower end of the sliding assembly is fixedly connected to a test needle plate. The test needle plate is provided with multiple test steel needles, and a measuring sensor is provided on one side of the fixed plate. The patent aims to provide a detection device for detecting the hole position of a circuit board, which is used to detect the hole position of the circuit board.

[0004] However, the hole position on some circuit boards will be slightly offset, but the hole is still within the process requirements, or can be slightly reworked and continued to be used. However, this device will mark all circuit boards that do not meet the requirements as unqualified, and cannot distinguish between circuit boards that can be reworked and those that cannot be reworked. Therefore, a circuit board double-sided hole position detection device is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a circuit board double-sided hole alignment detection device in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a double-sided hole position detection device for a circuit board comprises a workbench, support plates are fixedly connected on both sides of the workbench, a moving rod is slidably connected to the inner wall at the top of the support plate, and an ultrasonic detector is fixedly connected to the bottom end of the moving rod; a clamping device for clamping and limiting the circuit board is provided on the inner wall of the workbench, a supporting device for lifting the circuit board away from the workbench is provided on the inner wall of the workbench, a positioning device for straightening the circuit board is provided on the surface of the clamping device, and an adjusting device for adjusting the distance between the ultrasonic detector and the circuit board is provided on the top end of the moving rod; the clamping device comprises a motor, a bidirectional screw, a moving plate, a support rod and a clamping plate, the motor is fixedly connected to the left side of the support plate, the bidirectional screw is fixedly connected to the output end of the motor, the number of the moving plates is set to two, and the two moving plates are both threadedly connected to the surface of the bidirectional screw, the support rod is fixedly connected to the top of the moving plate, and the clamping plate is fixedly connected to the end of the support rod away from the moving plate; The circumferential surface is rotatably connected to the inner wall of the support plate, the circumferential surface of the bidirectional screw is rotatably connected to the inner wall of the workbench, the surface of the movable plate is slidably connected to the inner wall of the workbench, and the surface of the support rod is slidably connected to the inner wall of the workbench. The circuit board is placed on the workbench by a manipulator, and the ultrasonic detector emits ultrasonic waves and detects the hole positions on the surface of the circuit board. After the hole positions on one side are detected, the manipulator flips the circuit board and then detects the hole positions on the other side, thereby realizing double-sided hole position inspection of the circuit board. At the same time, the hole position deviation on the circuit board can be accurately detected by ultrasonic detection of the hole positions, and the subsequent manipulator is determined to clamp it to the next process, rework process or scrap process according to the deviation of the hole positions, thereby improving the detection accuracy of the device. At the same time, during the detection, the motor starts and drives the bidirectional screw to rotate, and the bidirectional screw drives the two movable plates to gather together through the thread, and the two movable plates drive the two clamping plates to gather together through the support rod. The clamping plate will clamp the circuit board to prevent the circuit board from shaking during the ultrasonic detection process, thereby affecting the ultrasonic detection result.

[0007] Preferably, the supporting device includes a transmission rod, a guide rod, a slide plate, a supporting block, a push rod, a top plate and a guide groove, the transmission rod is fixedly connected to the bottom of the movable plate, the guide rod is fixedly connected to the surface of the transmission rod, the push rod is slidably connected to the inner wall of the workbench, the supporting block is fixedly connected to the bottom end of the push rod, the slide plate is fixedly connected to the surface of the support block, the top plate is fixedly connected to the top of the push rod, and the guide groove is provided on the surface of the slide plate; the surface of the top plate is in contact with the inner wall of the workbench, the surface of the transmission rod is slidably connected to the inner wall of the workbench, the circumferential surface of the guide rod is in contact with the inner wall of the guide groove, and when the two movable plates When gathering, the moving plate will drive the transmission rod to move, the transmission rod will drive the guide rod to move, the guide rod will push the slide plate upward through the guide groove, the slide plate will drive the support block upward, the support block will drive the top rod upward, the top rod will drive the top plate upward, so that the top plate drives the circuit board to move up and away from the workbench, and then the moving plate drives the clamping plate to clamp and limit the raised circuit board, so that the circuit board can be away from the workbench during ultrasonic testing, to prevent the circuit board from being too thick and roughly flush with the top of the workbench, resulting in the ultrasonic wave being roughly the same length of time after contact and reflection between the circuit board and the workbench, which can easily misjudge that the circuit board and the workbench are in the same plane, thereby affecting the detection judgment of the ultrasonic detector.

[0008] The cam is connected with the support rod by the support rod, and the cam is connected with the support rod by the support rod, and the cam is connected with the support rod by the support rod. The fixing block is driven to move, and the fixing block drives the roller to move on the top of the workbench, and the friction force makes the roller rotate while moving on the top of the workbench, and the roller drives the spiral rod to rotate, and the spiral rod drives the transmission plate limited by the fixed block to move in the direction of the clamping plate through the spiral groove, and the transmission plate drives the limit plate to move through the limit rod, and the limit plate moves and pushes the circuit board to align, ensuring that both sides of the circuit board are parallel to the sides of the clamping plate to prevent the circuit board from offsetting when placed, thereby causing damage to it when the clamping plate clamps it, and preventing the clamping plate from continuing to gather and clamp, the transmission plate will continue to move and drive the limit plate to move, but the limit plate has already contacted the circuit board, so the limit plate will not be able to move further, but the transmission plate can continue to move and drive the limit plate to compress the spring through the limit rod, so that the compressed spring can push the limit plate to elastically clamp on the front and back sides of the circuit board, further improving the stability of the circuit board.

[0009] Preferably, the adjusting device comprises a connecting plate, a rope, a fixing plate 1 and a pulley 1, the connecting plate is fixedly connected to the top end of the moving rod, the rope is fixedly connected to the bottom of the connecting plate, the fixing plate 1 is fixedly connected to the inner wall of the supporting plate, and the pulley 1 is rotatably connected to the surface of the fixing plate 1; the adjusting device also comprises a pulley 2 and a fixing plate 2, the fixing plate 2 is fixedly connected to the inner wall of the supporting plate, and the pulley 2 is rotatably connected to the surface of the fixing plate 2; one end of the rope away from the connecting plate is fixedly connected to a side of the clamping plate close to the supporting plate, the circumferential surface of the rope contacts the circumferential surfaces of the pulley 1 and the pulley 2, and the circumferential surface of the rope contacts the inner wall of the supporting plate. When the clamping plate clamps a larger circuit board, The moving distance of the splint is small, so the distance that the splint pulls the rope to move is also small. Therefore, the distance that the rope pulls the connecting plate down under the guidance of pulley one and pulley two is small, so that the connecting plate pushes the ultrasonic detector to move down a smaller distance through the moving rod. Conversely, when the circuit board is small, the ultrasonic detector moves down a larger distance. Therefore, the distance between the circuit board and the ultrasonic detector can be self-adjusted according to the size of the circuit board to prevent the distance between the ultrasonic detector and the circuit board from being small when the circuit board is large, resulting in the ultrasonic wave emitted by the ultrasonic detector being difficult to fully cover the circuit board. When the circuit board is small, the larger spacing will also cause most of the ultrasonic waves to be emitted on the workbench, which will cause waste and affect its detection accuracy.

[0010] The present invention adopts the above technical solution to bring the following beneficial effects:

[0011] 1. The double-sided hole position detection equipment for circuit boards can realize double-sided hole position inspection of circuit boards through the coordinated operation of the workbench, support plate, moving rod, ultrasonic detector, motor, bidirectional screw, moving plate, support rod and clamping plate. At the same time, the hole position deviation on the circuit board can be accurately detected through ultrasonic detection of the hole position, and the subsequent robot arm can be determined to clamp it to the next process, rework process or scrap process according to the hole position deviation, thereby improving the detection accuracy of the device, and the clamping plate will clamp the circuit board to prevent the circuit board from shaking during the ultrasonic detection process, thereby affecting the ultrasonic detection result.

[0012] 2. The double-sided hole position detection equipment for circuit boards, through the coordinated operation of the transmission rod, guide rod, slide plate, support block, ejector rod, ejector plate, and guide groove, enables the ejector rod to drive the ejector plate to move up, and the ejector plate drives the circuit board to move up and away from the workbench, and then the moving plate drives the clamping plate to clamp and limit the raised circuit board, so that the circuit board can be away from the workbench during ultrasonic testing to prevent the circuit board from being too thick and roughly flush with the top of the workbench, resulting in the ultrasonic wave being roughly the same length of time after contact and reflection between the circuit board and the workbench, which can easily misjudge that the circuit board and the workbench are in the same plane, thereby affecting the detection judgment of the ultrasonic detector.

[0013] 3. The double-sided hole position detection equipment for the circuit board moves the limit plate and pushes the circuit board to align through the coordinated operation of the fixed block, spiral rod, roller, transmission plate, limit rod, limit disk and limit plate, ensuring that the two sides of the circuit board are parallel to the sides of the clamping plate to prevent the circuit board from offsetting when placed, thereby causing damage to it when the clamping plate clamps it, and preventing the clamping plate from continuing to gather and clamp. The transmission plate will continue to move and drive the limit plate to move, but the limit plate has already contacted the circuit board, so the limit plate will not be able to move further, but the transmission plate can continue to move and drive the limit disk to compress the spring through the limit rod, so that the compressed spring can push the limit plate to elastically clamp on the front and back sides of the circuit board, further improving the stability of the circuit board.

[0014] 4. The double-sided hole position detection device for the circuit board cooperates with the connection plate, the rope, the fixed plate 1, the pulley 1, the pulley 2 and the fixed plate 2 to operate. When the clamp clamps a larger circuit board, the moving distance of the clamp is smaller, so the distance that the clamp pulls the rope to move is also smaller. Therefore, the rope pulls the connection plate down a smaller distance under the guidance of the pulley 1 and the pulley 2, so that the connection plate pushes the ultrasonic detector down a smaller distance through the moving rod. Conversely, when the circuit board is smaller, the ultrasonic detector moves down a larger distance. Therefore, the distance between the circuit board and the ultrasonic detector can be self-adjusted according to the size of the circuit board to prevent the distance between the ultrasonic detector and the circuit board from being small when the circuit board is larger, resulting in the ultrasonic wave emitted by the ultrasonic detector being difficult to fully cover the circuit board. When the circuit board is smaller, the larger spacing will also cause most of the ultrasonic wave to be emitted on the workbench, which will cause waste and affect its detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the support plate structure of the present invention;

[0017] Figure 3 A half-section diagram of the workbench structure of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the skateboard of the present invention;

[0019] Figure 5 It is a schematic diagram of the splint structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the fixed block of the present invention;

[0021] Figure 7 It is a schematic diagram of the connecting plate structure of the present invention.

[0022] In the figure: 1. workbench; 2. support plate; 3. moving rod; 4. ultrasonic detector; 5. clamping device; 51. motor; 52. bidirectional screw; 53. moving plate; 54. support rod; 55. clamping plate; 6. support device; 61. transmission rod; 62. guide rod; 63. slide plate; 64. support block; 65. push rod; 66. push plate; 67. guide groove; 7. positioning device; 71. fixed block; 72. screw rod; 73. roller; 74. transmission plate; 75. limit rod; 76. limit disk; 77. limit plate; 8. adjusting device; 81. connecting plate; 82. rope; 83. fixed plate 1; 84. pulley 1; 85. pulley 2; 86. fixed plate 2. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 7An embodiment of the present invention is: a double-sided hole position detection device for a circuit board, comprising a workbench 1, support plates 2 are fixedly connected to both sides of the workbench 1, a moving rod 3 is slidably connected to the inner wall of the top of the support plate 2, and an ultrasonic detector 4 is fixedly connected to the bottom end of the moving rod 3; a clamping device 5 for clamping and limiting the position of the circuit board is provided on the inner wall of the workbench 1, a supporting device 6 for lifting the circuit board away from the workbench 1 is provided on the inner wall of the workbench 1, a positioning device 7 for aligning the circuit board is provided on the surface of the clamping device 5, and a positioning device 7 for adjusting the position of the circuit board is provided on the top of the moving rod 3. The adjusting device 8 for adjusting the distance between the ultrasonic detector 4 and the circuit board is used. The circuit board is placed on the workbench 1 by a manipulator. At this time, the ultrasonic detector 4 will emit ultrasonic waves and detect the hole positions on the surface of the circuit board. After the hole positions on one side are detected, the manipulator will turn the circuit board over and then detect the hole positions on the other side, thereby realizing the double-sided hole position inspection of the circuit board; the clamping device 5 includes a motor 51, a bidirectional screw 52, ​​a moving plate 53, a support rod 54 and a clamping plate 55. The motor 51 is fixedly connected to the left side of the support plate 2, and the bidirectional screw 52 is fixedly connected to the output of the motor 51 The movable plate 53 is provided with two ends, and the two movable plates 53 are both threadedly connected to the surface of the bidirectional screw 52, ​​the support rod 54 is fixedly connected to the top of the movable plate 53, and the clamping plate 55 is fixedly connected to the end of the support rod 54 away from the movable plate 53; the circumferential surface of the bidirectional screw 52 is rotatably connected to the inner wall of the support plate 2, the circumferential surface of the bidirectional screw 52 is rotatably connected to the inner wall of the workbench 1, the surface of the movable plate 53 is slidably connected to the inner wall of the workbench 1, and the surface of the support rod 54 is slidably connected to the inner wall of the workbench 1. The hole position can be accurately detected by ultrasonic wave. The hole position deviation on the circuit board is detected, and the subsequent robot arm is determined to clamp it to the next process, rework process or scrap process based on the hole position deviation, thereby improving the detection accuracy of the device. At the same time, during detection, the motor 51 starts and drives the bidirectional screw 52 to rotate. The bidirectional screw 52 drives the two movable plates 53 to gather together through the thread. The two movable plates 53 drive the two clamping plates 55 to gather together through the support rod 54. The clamping plate 55 will clamp the circuit board to prevent the circuit board from shaking during the ultrasonic detection process, thereby affecting the ultrasonic detection result.

[0025] The supporting device 6 includes a transmission rod 61, a guide rod 62, a slide plate 63, a support block 64, a push rod 65, a top plate 66 and a guide groove 67. The transmission rod 61 is fixedly connected to the bottom of the movable plate 53, the guide rod 62 is fixedly connected to the surface of the transmission rod 61, the push rod 65 is slidably connected to the inner wall of the workbench 1, the support block 64 is fixedly connected to the bottom end of the push rod 65, the slide plate 63 is fixedly connected to the surface of the support block 64, the top plate 66 is fixedly connected to the top of the push rod 65, and the guide groove 67 is provided on the surface of the slide plate 63. When the two movable plates 53 are brought together, the movable plate 53 will drive the transmission rod 61 to move, the transmission rod 61 drives the guide rod 62 to move, the guide rod 62 pushes the slide plate 63 to move upward through the guide groove 67, and the slide plate 63 drives the support block 64 to move upward , the support block 64 drives the push rod 65 to move upward, and the push rod 65 drives the top plate 66 to move upward, so that the top plate 66 drives the circuit board to move upward and away from the workbench 1, and then the moving plate 53 drives the clamping plate 55 to clamp and limit the raised circuit board, so that the circuit board can be away from the workbench 1 during ultrasonic testing to prevent the circuit board from being too thin and roughly flush with the top of the workbench 1, resulting in the ultrasonic wave and the circuit board and the workbench 1 The time after reflection is roughly the same, it is easy to misjudge that the circuit board and the workbench 1 are in the same plane, thereby affecting the detection judgment of the ultrasonic detector 4; the surface of the top plate 66 is in contact with the inner wall of the workbench 1, the surface of the transmission rod 61 is slidably connected to the inner wall of the workbench 1, and the circumferential surface of the guide rod 62 is in contact with the inner wall of the guide groove 67.

[0026] Working principle: The circuit board is placed on the workbench 1 by a robot. At this time, the ultrasonic detector 4 will emit ultrasonic waves and detect the hole positions on the surface of the circuit board. After the hole position on one side is detected, the robot will turn the circuit board over and then detect the hole position on the other side, so as to realize the double-sided hole position inspection of the circuit board. At the same time, the hole position deviation on the circuit board can be accurately detected by ultrasonic detection, and the subsequent robot will clamp it to the next process, rework process or scrap process according to the hole position deviation, so as to improve the detection accuracy of the device. At the same time, during the detection, the motor 51 starts and drives the bidirectional screw 52 to rotate. The bidirectional screw 52 drives the two movable plates 53 to gather together through the thread. The two movable plates 53 drive the two clamping plates 55 to gather together through the support rod 54. The clamping plate 55 will clamp the circuit board to prevent the circuit board from shaking during the ultrasonic detection process, thereby affecting the ultrasonic detection result.

[0027] When the two movable plates 53 gather together, the movable plate 53 will drive the transmission rod 61 to move, the transmission rod 61 drives the guide rod 62 to move, the guide rod 62 pushes the slide plate 63 upward through the guide groove 67, the slide plate 63 drives the support block 64 upward, the support block 64 drives the top rod 65 upward, the top rod 65 drives the top plate 66 upward, so that the top plate 66 drives the circuit board to move up and away from the workbench 1, and then the movable plate 53 drives the clamping plate 55 to clamp and limit the raised circuit board, so that the circuit board can be away from the workbench 1 during ultrasonic testing, to prevent the circuit board from being too thin and roughly flush with the top of the workbench 1, resulting in the ultrasonic wave contacting and reflecting the circuit board and the workbench 1 for roughly the same time, which is easy to misjudge that the circuit board and the workbench 1 are in the same plane, thereby affecting the detection judgment of the ultrasonic detector 4.

[0028] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, the positioning device 7 includes a fixed block 71, a screw rod 72, a roller 73 and a transmission plate 74. The fixed block 71 is fixedly connected to the surface of the support rod 54, the screw rod 72 is rotatably connected to the inner wall of the fixed block 71, the roller 73 is fixedly connected to the end of the screw rod 72 away from the support rod 54, and the transmission plate 74 is slidably connected to the inner wall of the fixed block 71; the positioning device 7 also includes a limiting rod 75, a limiting plate 76 and a limiting plate 77, the limiting rod 75 is fixed The limit plate 76 is fixedly connected to one end of the limit rod 75 away from the transmission plate 74, and the limit plate 77 is slidably connected to the circumferential surface of the limit rod 75. When the support rod 54 moves, the fixed block 71 is driven to move, and the fixed block 71 drives the roller 73 to move on the top of the workbench 1, and the friction force causes the roller 73 to rotate while moving on the top of the workbench 1, and the roller 73 drives the spiral rod 72 to rotate, and the spiral rod 72 drives the fixed block 71 to limit the position through the spiral groove. The transmission plate 74 moves in the direction of the clamping plate 55, and the transmission plate 74 drives the limiting plate 77 to move through the limiting rod 75. The limiting plate 77 moves and pushes the circuit board to align, ensuring that the two sides of the circuit board are parallel to the sides of the clamping plate 55, preventing the circuit board from being offset when placed, thereby causing damage to it when the clamping plate 55 clamps it; a spring is provided between the limiting plate 77 and the limiting plate 76, and the spring is sleeved on the circumferential surface of the limiting rod 75, the circumferential surface of the spiral rod 72 is provided with a spiral groove, and the inner wall of the transmission plate 74 is provided with a clamping block, and the clamping block The block is located in the spiral groove, and the circumferential surface of the roller 73 contacts with the top of the workbench 1 to prevent the clamping plate 55 from continuing to gather and clamp. The transmission plate 74 will also continue to move and drive the limit plate 77 to move, but the limit plate 77 has been in contact with the circuit board, so the limit plate 77 will not be able to move further, but the transmission plate 74 can continue to move and drive the limit plate 76 to compress the spring through the limit rod 75, so that the compressed spring can push the limit plate 77 to elastically clamp on the front and back sides of the circuit board, further improving the stability of the circuit board.

[0029] The adjusting device 8 includes a connecting plate 81, a rope 82, a fixing plate 83 and a pulley 84. The connecting plate 81 is fixedly connected to the top of the moving rod 3, the rope 82 is fixedly connected to the bottom of the connecting plate 81, the fixing plate 83 is fixedly connected to the inner wall of the supporting plate 2, and the pulley 84 is rotatably connected to the surface of the fixing plate 83; the adjusting device 8 also includes a pulley 85 and a fixing plate 86. The fixing plate 86 is fixedly connected to the inner wall of the supporting plate 2, and the pulley 85 is rotatably connected to the surface of the fixing plate 86. When the clamping plate 55 clamps a larger circuit board, the moving distance of the clamping plate 55 is smaller, so the distance that the clamping plate 55 pulls the rope 82 to move is also smaller. Therefore, the rope 82 pulls the connecting plate 81 downward under the guidance of the pulley 84 and the pulley 85. A smaller distance allows the connecting plate 81 to pass through The distance that the moving rod 3 pushes the ultrasonic detector 4 downward is smaller. On the contrary, when the circuit board is smaller, the distance that the ultrasonic detector 4 moves downward will be larger. Therefore, the distance between the circuit board and the ultrasonic detector 4 can be self-adjusted according to the size of the circuit board to prevent the ultrasonic detector 4 from having a small distance between the circuit board when the circuit board is larger, which makes it difficult for the ultrasonic wave emitted by the ultrasonic detector 4 to fully cover the circuit board. When the circuit board is smaller, the larger spacing will also cause most of the ultrasonic waves to be emitted on the workbench 1, causing waste and affecting its detection accuracy; the end of the rope 82 away from the connecting plate 81 is fixedly connected to the side of the clamping plate 55 close to the support plate 2, the circumferential surface of the rope 82 contacts the circumferential surfaces of pulley 1 84 and pulley 2 85, and the circumferential surface of the rope 82 contacts the inner wall of the support plate 2.

[0030] Working principle: When the support rod 54 moves, it will drive the fixed block 71 to move, and the fixed block 71 will drive the roller 73 to move on the top of the workbench 1, and through the friction force, the roller 73 will rotate while moving on the top of the workbench 1, and the roller 73 will drive the spiral rod 72 to rotate, and the spiral rod 72 will drive the transmission plate 74 limited by the fixed block 71 to move toward the clamping plate 55 through the spiral groove, and the transmission plate 74 will drive the limiting plate 77 to move through the limiting rod 75, and the limiting plate 77 will move and push the circuit board to align, ensuring that both sides of the circuit board are aligned with the clamping plate 55. The side surfaces are parallel to each other to prevent the circuit board from shifting when it is placed, which would cause damage to the circuit board when the clamping plate 55 is clamped. To prevent the clamping plate 55 from continuing to gather and clamp, the transmission plate 74 will continue to move and drive the limit plate 77 to move, but the limit plate 77 has already contacted the circuit board, so the limit plate 77 will not be able to move further. However, the transmission plate 74 can continue to move and drive the limit plate 76 to compress the spring through the limit rod 75, so that the compressed spring can push the limit plate 77 to elastically clamp on the front and back sides of the circuit board, thereby further improving the stability of the circuit board.

[0031] When the clamp 55 clamps a larger circuit board, the moving distance of the clamp 55 is smaller, so the distance that the clamp 55 pulls the rope 82 to move is also smaller. Therefore, the rope 82 pulls the connecting plate 81 downward under the guidance of pulley 1 84 and pulley 2 85. The distance that the connecting plate 81 pushes the ultrasonic detector 4 downward through the moving rod 3 is smaller. On the contrary, when the circuit board is smaller, the distance that the ultrasonic detector 4 moves downward will be larger. Therefore, the distance between the circuit board and the ultrasonic detector 4 can be self-adjusted according to the size of the circuit board to prevent the distance between the ultrasonic detector 4 and the circuit board from being small when the circuit board is larger, resulting in the ultrasonic wave emitted by the ultrasonic detector 4 being difficult to fully cover the circuit board. When the circuit board is smaller, the larger spacing will also cause most of the ultrasonic wave to be emitted on the workbench 1, which will cause waste and affect its detection accuracy.

[0032] The present invention provides a circuit board double-sided hole position detection device. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A circuit board double-sided hole position detection device, comprising a workbench (1), characterized in that: Support plates (2) are fixedly connected to both sides of the workbench (1); a moving rod (3) is slidably connected to the inner wall of the top of the support plate (2); and an ultrasonic detector (4) is fixedly connected to the bottom end of the moving rod (3); The inner wall of the workbench (1) is provided with a clamping device (5) for clamping and limiting the position of the circuit board, the inner wall of the workbench (1) is provided with a supporting device (6) for lifting the circuit board away from the workbench (1), the surface of the clamping device (5) is provided with a positioning device (7) for aligning the circuit board, and the top end of the moving rod (3) is provided with an adjusting device (8) for adjusting the distance between the ultrasonic detector (4) and the circuit board; The clamping device (5) comprises a motor (51), a bidirectional screw (52), a movable plate (53), a support rod (54) and a clamping plate (55), wherein the motor (51) is fixedly connected to the left side of the support plate (2), the bidirectional screw (52) is fixedly connected to the output end of the motor (51), there are two movable plates (53), and both movable plates (53) are threadedly connected to the surface of the bidirectional screw (52), the support rod (54) is fixedly connected to the top of the movable plate (53), and the clamping plate (55) is fixedly connected to the end of the support rod (54) away from the movable plate (53); The supporting device (6) comprises a transmission rod (61), a guide rod (62), a slide plate (63), a support block (64), a push rod (65), a top plate (66) and a guide groove (67); the transmission rod (61) is fixedly connected to the bottom of the movable plate (53); the guide rod (62) is fixedly connected to the surface of the transmission rod (61); the push rod (65) is slidably connected to the inner wall of the workbench (1); the support block (64) is fixedly connected to the bottom end of the push rod (65); the slide plate (63) is fixedly connected to the surface of the support block (64); the top plate (66) is fixedly connected to the top of the push rod (65); and the guide groove (67) is provided on the surface of the slide plate (63); The surface of the top plate (66) is in contact with the inner wall of the workbench (1), the surface of the transmission rod (61) is slidably connected to the inner wall of the workbench (1), and the circumferential surface of the guide rod (62) is in contact with the inner wall of the guide groove (67).

2. A circuit board double-sided hole position detection device according to claim 1, characterized in that: The circumferential surface of the bidirectional screw (52) is rotatably connected to the inner wall of the support plate (2), the circumferential surface of the bidirectional screw (52) is rotatably connected to the inner wall of the workbench (1), the surface of the movable plate (53) is slidably connected to the inner wall of the workbench (1), and the surface of the support rod (54) is slidably connected to the inner wall of the workbench (1).

3. A circuit board double-sided hole position detection device according to claim 2, characterized in that: The positioning device (7) comprises a fixed block (71), a screw rod (72), a roller (73) and a transmission plate (74); the fixed block (71) is fixedly connected to the surface of the support rod (54); the screw rod (72) is rotatably connected to the inner wall of the fixed block (71); the roller (73) is fixedly connected to one end of the screw rod (72) away from the support rod (54); and the transmission plate (74) is slidably connected to the inner wall of the fixed block (71).

4. A circuit board double-sided hole position detection device according to claim 3, characterized in that: The positioning device (7) further comprises a limiting rod (75), a limiting disk (76) and a limiting plate (77); the limiting rod (75) is fixedly connected to a side of the transmission plate (74) away from the support rod (54); the limiting disk (76) is fixedly connected to an end of the limiting rod (75) away from the transmission plate (74); and the limiting plate (77) is slidably connected to the circumferential surface of the limiting rod (75).

5. A circuit board double-sided hole position detection device according to claim 4, characterized in that: A spring is arranged between the limit plate (77) and the limit disk (76), and the spring is sleeved on the circumferential surface of the limit rod (75). A spiral groove is provided on the circumferential surface of the spiral rod (72). A clamping block is provided on the inner wall of the transmission plate (74), and the clamping block is located in the spiral groove. The circumferential surface of the roller (73) is in contact with the top of the workbench (1).

6. A circuit board double-sided hole position detection device according to claim 5, characterized in that: The adjusting device (8) comprises a connecting plate (81), a rope (82), a fixing plate (83) and a pulley (84); the connecting plate (81) is fixedly connected to the top of the moving rod (3); the rope (82) is fixedly connected to the bottom of the connecting plate (81); the fixing plate (83) is fixedly connected to the inner wall of the supporting plate (2); and the pulley (84) is rotatably connected to the surface of the fixing plate (83).

7. A circuit board double-sided hole position detection device according to claim 6, characterized in that: The adjusting device (8) further comprises a second pulley (85) and a second fixing plate (86), wherein the second fixing plate (86) is fixedly connected to the inner wall of the supporting plate (2), and the second pulley (85) is rotatably connected to the surface of the second fixing plate (86).

8. A circuit board double-sided hole position detection device according to claim 7, characterized in that: One end of the rope (82) away from the connecting plate (81) is fixedly connected to a side of the clamping plate (55) close to the supporting plate (2), and the circumferential surface of the rope (82) contacts the circumferential surfaces of the pulley 1 (84) and the pulley 2 (85), and the circumferential surface of the rope (82) contacts the inner wall of the supporting plate (2).

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