Circuit board transmission track

Abstract

The utility model belongs to the technical field of optical detection transmission, and particularly relates to a circuit board transmission track. Comprising a base, a sliding rail, a roller, a transmission belt, a reset adjusting element and a first motor. The two sliding rails are parallel to each other and are in sliding connection with the base, and the sliding direction is perpendicular to the length direction of the sliding rails. The rollers are arranged in parallel and rotationally connected with the two sliding rails, the two ends of each roller are in transmission connection with the transmission belts respectively, the middle of each roller is telescopic, one end of one roller is in transmission connection with the first motor, and the first motor is fixedly connected with the base. One ends of the reset adjusting elements are fixed to the two opposite faces of the two sliding rails, and the other ends of the reset adjusting elements face the space between the two sliding rails. The problem that the circuit board deviates from a detection scanning area due to deviation in the transmission process can be avoided, and the detection requirements of circuit boards of different sizes can be met.

Description

Technical Field

[0001] This utility model belongs to the field of optical detection and transmission technology, and specifically relates to a circuit board transmission. Background Technology

[0002] In the process of circuit board manufacturing, electronic components after wave soldering need to undergo quality inspection. Automated optical inspection is an important process to ensure product quality when manufacturing electronic circuit boards. The circuit board is scanned and processed, and the presence of defects is displayed on the monitor, helping engineers to screen or make targeted improvements to the products in a timely manner.

[0003] According to the prior art document "A Novel Optical Inspection Equipment" with publication number "CN109351649A", the device drives the driven pulley to rotate through the active pulley, thereby causing the conveyor belt to operate and moving items such as circuit boards for loading and inspection.

[0004] However, in the existing technology, the circuit boards and other items to be inspected are prone to displacement due to vibration and other reasons during the transmission and movement process. This causes the circuit boards and other items to be inspected to deviate from the scanning area of ​​the optical inspection probe, resulting in inaccurate detection of the circuit boards and other items. Moreover, it is only applicable to the inspection of circuit boards of a single size. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a circuit board transport track. Through the cooperation of slide rails, rollers, a transmission belt, and a reset and adjustment element, this invention avoids positional shifts during circuit board transport that could lead to deviations from the optical detection scanning area. Furthermore, the distance between the two slide rails can be adjusted by the extension and retraction of the rollers and the lead screw driven by a lead screw motor. This adapts to the detection needs of circuit boards of various sizes while ensuring that the circuit board under test always passes through the guide section in the middle of the rollers, thus further enhancing the limiting effect on the circuit board under test.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A circuit board transmission track includes a base, two slide rails, multiple rollers, a transmission belt, multiple reset and adjustment elements, and a first motor. The two slide rails are parallel to each other and slidably connected to the base, with the sliding direction perpendicular to the length direction of the slide rails. The multiple rollers are arranged parallel to each other and are rotatably connected to the two slide rails. Each roller has two ends connected to a transmission belt for transmission. The middle of each roller is retractable. One end of one roller is connected to the first motor for transmission, and the first motor is fixedly connected to the base. One end of each of the multiple reset and adjustment elements is fixed to two opposite surfaces of the two slide rails, and the other end faces the space between the two slide rails. The reset and adjustment elements are configured to guide the circuit board towards the middle of the two slide rails when they come into contact with the circuit board.

[0008] Furthermore, the reset adjustment element includes a fixed shaft, an adjusting block, and a reset spring. One end of the fixed shaft is fixedly connected to the slide rail, and the other end is rotatably connected to the adjusting block. One end of the reset spring is fixedly connected to the slide rail, and the other end is fixedly connected to the side of the adjusting block near the slide rail. When the adjusting block touches the circuit board, the reset spring contracts, and the adjusting block pulls the circuit board. After the circuit board passes, the reset spring extends, and the adjusting block returns to its initial position and angle.

[0009] Furthermore, the adjustment block has a plurality of rotatable adjustment wheels on the side facing the circuit board, and the adjustment wheels are configured to rotate when touched by the circuit board.

[0010] Furthermore, a telescopic joint is provided in the middle of the roller, which can extend or shorten along the length of the roller.

[0011] Furthermore, the middle section of the roller is a guide section, and the diameter of the guide section gradually decreases from both ends towards the middle.

[0012] Furthermore, it includes a lead screw and a second motor. The lead screw is threadedly connected to the two slide rails. The length direction of the lead screw is consistent with the length direction of the roller. The lead screw is driven by the second motor, and the second motor is fixedly connected to the base.

[0013] Furthermore, the base has multiple grooves, in which sliders are slidably connected, and the sliders are fixedly connected to the slide rail.

[0014] Furthermore, multiple support columns are fixedly connected to the side of the base facing away from the slide rail.

[0015] Furthermore, the two ends of the slide rail are flush with the two ends of the base along its length.

[0016] Furthermore, the transmission belt can be a belt or a track.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This utility model, through the cooperation of slide rails, rollers, transmission belts, and reset adjustment elements, can avoid the problem of positional shift during circuit board transmission, which would cause deviation from the optical detection scanning area. Specifically, the area above the roller between the two slide rails forms a transmission channel for the circuit board. The circuit board is transmitted in the transmission channel, and the circuit board to be tested is transmitted to the scanning area of ​​the detector for detection. During transmission, the circuit board is prone to positional shift, causing it to deviate from the detection path in the transmission channel. The distance between the two slide rails is adjusted by the extension and retraction of the roller and the lead screw driven by the lead screw motor. This ensures that the circuit board to be tested is always kept on the guide section in the middle of the roller, i.e., on the detection path, and can adapt to the detection needs of circuit boards of various sizes, enhancing the limiting effect on the circuit board to be tested. Specifically, the roller is provided with a telescopic joint in the middle. The length is adjustable, and the slide rail can slide along the length of the roller. When the slide rail slides, it simultaneously drives the adjustment of the roller length. The two slide rails are connected by a screw, and the sliding of the slide rail and the length adjustment of the roller are realized by operating the screw motor. Moreover, the extension and retraction of the roller and the sliding of the slide rail are carried out synchronously and with the same length. This ensures that no matter how the length of the guide section changes, the guide section is always located in the detection path, which has an accurate guiding and limiting effect on the transmitted circuit board. Furthermore, since the length of the guide section of the roller can be adjusted according to the actual working conditions, the guide section in the middle of the roller remains adapted to the size of the circuit board to be detected when the size of the circuit board to be detected and the area of ​​the detection area change. This allows circuit boards of different sizes to be detected, thereby realizing the transmission and detection of circuit boards of various sizes in the transmission channel, improving detection efficiency and reducing detection costs.

[0019] (2) In this utility model, when the circuit board deviates from the detection route, it will come into contact with the reset adjustment elements set on both sides of the transmission channel. Under the pulling action of the reset adjustment elements, the circuit board will be pulled back onto the detection route and then enter the detection area for detection, thereby improving the accuracy of the entire detection process. The middle part of the roller has a guide section that is thick at both ends and thin in the middle. The guide section is located in the detection route. When the guide section with a certain slope rotates and transmits the circuit board to be tested, it can pull the circuit board to be kept within the range of the guide section, avoiding the circuit board to be tested from deviating from the set detection route, and further increasing the accuracy of circuit board detection. It is worth noting that when the reset adjustment element performs the pulling action, the adjustment block directly contacts the circuit board. The side of the adjustment block facing the slide rail is provided with a spring, so that the adjustment block pulls the circuit board when rotating around the fixed axis. Moreover, the contact surface of the adjustment block has multiple rotatable adjustment wheels. Under the contact rotation action of the adjustment wheels, the circuit board that deviates from the detection route can be pulled back onto the detection route more smoothly, avoiding the circuit board from getting stuck at the reset adjustment element. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a circuit board transmission track according to the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a reset adjustment element for a circuit board transmission track according to the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a circuit board transmission track according to the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of a circuit board transmission track according to the present invention. Figure 3 ;

[0024] Figure 5 This is a schematic diagram of the structure of a roller in a circuit board transmission track according to the present invention.

[0025] The attached figures are labeled as follows:

[0026] 10. Base; 101. Slide groove; 102. Slider; 103. Support column;

[0027] 20. Slide rail;

[0028] 30. Roller; 301. Telescopic joint; 302. Guide section;

[0029] 40. Transmission belt;

[0030] 50. Reset adjustment element; 501. Fixed shaft; 502. Adjusting block; 503. Reset spring; 504. Adjusting wheel;

[0031] 60. First motor;

[0032] 70. Lead screw;

[0033] 80. Second motor. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0035] refer to Figures 1-5 As shown, this embodiment provides a circuit board transmission track, including a base 10, two slide rails 20, multiple rollers 30, a transmission belt 40, multiple reset adjustment elements 50, and a first motor 60. The two slide rails 20 are parallel to each other and slidably connected to the base 10, with the sliding direction perpendicular to the length direction of the slide rails 20. The multiple rollers 30 are arranged parallel to each other and rotatably connected to the two slide rails 20. Each roller 30 has two ends connected to a transmission belt 40 for transmission. The middle of each roller 30 is retractable. One end of one roller 30 is connected to the first motor 60 for transmission, and the first motor 60 is fixedly connected to the base 10. One end of each reset adjustment element 50 is fixed to two opposite surfaces of the two slide rails 20, and the other end faces the space between the two slide rails 20. The reset adjustment elements 50 are configured to guide the circuit board towards the middle of the two slide rails 20 when they come into contact with the circuit board.

[0036] This invention, through the cooperation of slide rails 20, rollers 30, transmission belts 40, and reset adjustment elements 50, avoids the problem of positional shift during circuit board transmission, which could lead to deviation from the optical detection scanning area. Specifically, two slide rails 20 are arranged in parallel to fix multiple rollers 30. The rollers 30 are parallel to each other and rotatably connected to the slide rails 20. The area above the rollers 30 between the two slide rails 20 forms a transmission channel for the circuit board. Therefore, the circuit board to be tested can move and be transmitted in the transmission channel with the rotation of the rollers 30, thereby transmitting the circuit board to be tested to the scanning area of ​​the optical detector for detection. During transmission in the transmission channel, the circuit board is prone to positional shift, causing it to deviate from the detection path. When the circuit board's transmission path deviates beyond the set detection path, it will contact the reset adjustment elements 50 located on both sides of the transmission channel. Under the pulling action of the reset adjustment elements 50, the circuit board will be pulled back onto the detection path and then enter the detection area for detection, thereby improving the accuracy of the entire detection process.

[0037] In this embodiment, the reset adjustment element 50 includes a fixed shaft 501, an adjustment block 502, and a reset spring 503. One end of the fixed shaft 501 is fixedly connected to the slide rail 20, and the other end is rotatably connected to the adjustment block 502. One end of the reset spring 503 is fixedly connected to the slide rail 20, and the other end is fixedly connected to the side of the adjustment block 502 near the slide rail 20. When the adjustment block 502 touches the circuit board, the reset spring 503 contracts, and the adjustment block 502 pushes the circuit board. After the circuit board passes, the reset spring 503 extends, and the adjustment block 502 returns to its initial position and angle.

[0038] It is worth noting that when the reset adjustment element 50 performs its guiding action, the part that directly contacts the circuit board is the adjustment block 502. A reset spring 503 is provided on the side of the adjustment block 502 facing the slide rail 20. When the adjustment block 502 contacts the circuit board to be tested, the reset spring 503 contracts, allowing the adjustment block 502 to slowly rotate around the fixed shaft 501 during the guiding process. This allows the circuit board to receive a guiding force in the direction of the detection path. Furthermore, the contact surface of the adjustment block 502 has multiple rotatable adjustment wheels 504. Under the contact and rotation action of the adjustment wheels 504, circuit boards that have deviated from the detection path can be more smoothly guided back onto the detection path, preventing the circuit board from getting stuck at the reset adjustment element 50. After the circuit board passes the adjustment block 502, the reset spring 503 extends, and the adjustment block 502 resets, ready for the next adjustment guiding action.

[0039] In this embodiment, the adjustment block 502 has a plurality of rotatable adjustment wheels 504 on the side facing the circuit board, and the adjustment wheels 504 are configured to rotate when touched by the circuit board.

[0040] Figure 1 This is a schematic diagram of the overall structure of a circuit board transmission track according to the present invention. See also: Figure 1 The arrow in the figure indicates the direction of movement of the circuit board under test in the test channel. Because the adjustment block 502 has multiple rotatable adjustment wheels 504 on the side facing the circuit board, whenever the circuit board under test deviates from the set test path in the test channel, it will contact the adjustment wheel 504 on the adjustment block 502 in time. Under the contact and rotation action of the adjustment wheel 504, the circuit board that has deviated from the test path can be more smoothly guided back to the test path, avoiding the circuit board from getting stuck at the reset adjustment element 50.

[0041] In this embodiment, a telescopic joint 301 is provided in the middle of the roller 30, and the telescopic joint 301 can extend or shorten along the length direction of the roller 30.

[0042] Figure 5This is a schematic diagram of the structure of a roller 30 according to the present invention. See also Figure 5 In this invention, since the roller 30 is provided with a telescopic joint 301 in the middle, the length of the guide section 302 of the roller 30 can be adjusted according to the actual working conditions. Thus, when the size of the circuit board to be tested and the area of ​​the testing area change, the guide section 302 in the middle of the roller 30 still remains consistent with the size of the circuit board, so that circuit boards of different sizes can be stably held on the testing line for testing using this device.

[0043] It is worth noting that in this utility model, the slide rail 20 can slide along the length of the roller 30. When the slide rail 20 slides, it can simultaneously stretch or shorten the length of the roller 30. A lead screw 70 is threadedly connected to the two slide rails 20. The lead screw 70 is connected to the lead screw 70 motor. Therefore, the sliding of the slide rail 20 and the length adjustment of the roller 30 can be realized by operating the lead screw 70 motor, thereby realizing the transmission and testing of circuit boards of various sizes on the transmission channel, improving the testing efficiency and reducing the testing cost.

[0044] It is worth noting that the extension and retraction of the roller 30 and the sliding of the slide rail 20 are synchronized and of the same length. This ensures that no matter how the length of the guide section 302 changes, the reset adjustment element 50 will never block the detection path in the transmission channel.

[0045] In this embodiment, the middle part of the roller 30 is a guide section 302, and the diameter of the guide section 302 gradually decreases from both ends to the middle.

[0046] In this invention, the roller 30 has a guide section 302 that is thick at both ends and thin in the middle. The guide section 302 is always located in the detection path of the circuit board. When the guide section 302 rotates and transports the circuit board to be tested, it can pull the circuit board to be kept within the range of the guide section 302, so as to avoid the circuit board to be tested deviating from the set detection path and further increase the accuracy of circuit board detection.

[0047] It is worth noting that the projection of the reset adjustment element toward the roller 30 is exactly adjacent to the guide section 302, and the extension and retraction of the roller 30 and the sliding of the slide rail 20 are carried out synchronously. This ensures that no matter how the length of the guide section 302 changes, the reset adjustment element can always accurately guide the circuit board back onto the guide section 302, that is, onto the detection path, without obstructing the detection path.

[0048] In this embodiment, a lead screw 70 and a second motor 80 are included. The lead screw 70 is threadedly connected to the two slide rails 20. The length direction of the lead screw 70 is consistent with the length direction of the roller 30. The lead screw 70 is drivenly connected to the second motor 80, and the second motor 80 is fixedly connected to the base 10.

[0049] In this invention, the distance between the two slide rails 20 can be adjusted by the extension and retraction of the roller 30 and the motor-driven lead screw 70. This can not only adapt to the testing needs of circuit boards of various sizes, but also ensure that the circuit board to be tested can always be kept on the guide section 302 in the middle of the roller 30, thereby enhancing the limiting effect of the circuit board to be tested.

[0050] In this embodiment, the base 10 has a plurality of sliding grooves 101, and a slider 102 is slidably connected in the sliding groove 101. The slider 102 is fixedly connected to the slide rail 20.

[0051] Figure 4 This is a schematic diagram of the structure of a circuit board transmission track according to the present invention. See also: Figure 4 In this utility model, the slider 102 is fixedly connected to the slide rail 20, and the slider 102 can slide along the length direction of the slide groove 101 in the slide groove 101. At the same time, the sliding direction is consistent with the length direction of the roller 30. Therefore, the roller 30 can be extended and retracted by the linkage of the slider 102 and the slide rail 20, and the length of the roller 30 can be adjusted to suit the detection of circuit boards of different sizes.

[0052] In this embodiment, a plurality of support columns 103 are fixedly connected to the side of the base 10 facing away from the slide rail 20.

[0053] In this embodiment, the two ends of the slide rail 20 are flush with the two ends of the base 10 along its length.

[0054] In this embodiment, the transmission belt 40 may be a belt or a track.

[0055] It is worth noting that the roller 30 connected to the first motor 60 should be a roller 30 wrapped around the transmission belt 40, so that the torque output by the first motor 60 can be transmitted to the other rollers 30 through the transmission belt 40.

Claims

1. A circuit board transmission track, characterized in that, It includes a base (10), two slide rails (20), multiple rollers (30), a transmission belt (40), multiple reset and adjustment elements (50), and a first motor (60); The two slide rails (20) are parallel to each other and are slidably connected to the base (10), with the sliding direction perpendicular to the length direction of the slide rails (20); The plurality of rollers (30) are arranged in parallel to each other and are rotatably connected to the two slide rails (20). Each roller (30) is connected to a transmission belt (40) at both ends. The middle part of each roller (30) is retractable. One end of one roller (30) is connected to a first motor (60). The first motor (60) is fixedly connected to the base (10). One end of each of the plurality of reset adjustment elements (50) is fixed to two opposite surfaces of the two slide rails (20), and the other end faces the space between the two slide rails (20). The reset adjustment elements (50) are configured to push the circuit board toward the middle of the two slide rails (20) when they touch the circuit board.

2. The circuit board transmission track according to claim 1, characterized in that, The reset adjustment element (50) includes a fixed shaft (501), an adjustment block (502) and a reset spring (503). One end of the fixed shaft (501) is fixedly connected to the slide rail (20), and the other end is rotatably connected to the adjustment block (502). One end of the return spring (503) is fixedly connected to the slide rail (20), and the other end is fixedly connected to the side of the adjusting block (502) near the slide rail (20); When the adjusting block (502) touches the circuit board, the reset spring (503) contracts, the adjusting block (502) pushes the circuit board, and after the circuit board passes, the reset spring (503) extends, and the adjusting block (502) returns to its initial position and angle.

3. The circuit board transmission track according to claim 2, characterized in that, The adjustment block (502) has a plurality of rotatable adjustment wheels (504) on the side facing the circuit board, and the adjustment wheels (504) are configured to rotate when touched by the circuit board.

4. The circuit board transmission track according to claim 1, characterized in that, A telescopic joint (301) is provided in the middle of the roller (30), and the telescopic joint (301) can extend or shorten along the length direction of the roller (30).

5. The circuit board transmission track according to claim 1, characterized in that, The middle part of the roller (30) is a guide section (302), and the diameter of the guide section (302) gradually decreases from both ends to the middle.

6. The circuit board transmission track according to claim 1, characterized in that, It includes a lead screw (70) and a second motor (80). The lead screw (70) is threadedly connected to the two slide rails (20). The length direction of the lead screw (70) is consistent with the length direction of the roller (30). The lead screw (70) is driven by the second motor (80). The second motor (80) is fixedly connected to the base (10).

7. The circuit board transmission track according to claim 1, characterized in that, The base (10) has a plurality of grooves (101), and there are sliders (102) slidably connected in the grooves (101). The sliders (102) are fixedly connected to the slide rail (20).

8. The circuit board transmission track according to claim 1, characterized in that, Multiple support columns (103) are fixedly connected to the side of the base (10) facing away from the slide rail (20).

9. A circuit board transmission track according to claim 1, characterized in that, The two ends of the slide rail (20) are flush with the two ends of the base (10) along its length.

10. A circuit board transmission track according to claim 1, characterized in that, The transmission belt (40) can be a belt or a track.

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