Transfer method of circuit board

Abstract

The invention discloses a circuit board transfer method, which comprises the following steps that: a plurality of stacks of circuit boards to be tested are placed on a cart, the cart is provided with a bearing roller, and the plurality of stacks of circuit boards to be tested are placed on the bearing roller; the cart is pushed to the conveying device, a roller is arranged on the conveying device, and the bearing roller is located above the roller; the front end of the trolley triggers the detection part, and the bearing rollers and the rollers are arranged in a staggered mode in the longitudinal direction; when the detection part is triggered, the cart is locked; the rollers move upwards, and the rollers move upwards from the gaps between every two adjacent bearing rollers and support the circuit boards on the bearing rollers; and when the bottom of the roller is higher than the top of the bearing roller, the roller conveys the circuit board. According to the transferring method, in the whole process of transferring the circuit board from the cart to the feeding area of the circuit board testing machine, the circuit board does not need to be carried by an operator, the circuit board can be prevented from being collided and damaged in the manual transferring process, the labor intensity of the operator can be reduced, and the transferring efficiency of the circuit board is also improved.

Description

Technical Field

[0001] The present invention relates to a method for transporting a circuit board. Background Art

[0002] The functional test of a circuit board is a detection process for printed circuit boards in the electronics manufacturing industry, aiming to verify whether the entire circuit system on the circuit board works properly according to the design specifications. This test is crucial for ensuring product quality, reliability, and performance.

[0003] In the existing circuit board testing machine, the loading area is usually a loading conveyor belt. Before testing, the operator uses a cart to push the washed circuit boards to the side of the loading conveyor belt, and then the operator moves stacks of circuit boards to be tested on the cart onto the loading conveyor belt. This way of transporting circuit boards has a high labor intensity, resulting in a reduced overall testing efficiency of the circuit boards. Moreover, the circuit boards are easily bumped and damaged during the handling process, generating defective products and increasing costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for transporting a circuit board to solve at least one of the above technical problems.

[0005] The present invention provides a method for transporting a circuit board, including the following steps:

[0006] S1: Place multiple stacks of circuit boards to be tested on a cart. The cart is provided with a plurality of parallel arranged carrying rods, and the multiple stacks of circuit boards to be tested are placed on the carrying rods;

[0007] S2: Push the cart towards a conveying device. The conveying device is provided with a plurality of parallel arranged rotatable rollers, and the carrying rods on the cart are located above the rollers on the conveying device;

[0008] S3: The front end of the cart triggers a detection component below the conveying device, and the carrying rods on the cart and the rollers on the conveying device are arranged in a staggered manner longitudinally;

[0009] S4: When the detection component is triggered, the cart is locked and cannot move;

[0010] S5: The rollers on the conveying device move upward. The rollers move upward from the gap between two adjacent carrying rods on the cart and support the circuit boards on the carrying rods;

[0011] S6: When the bottom of the rollers on the conveying device is higher than the top of the carrying rods on the cart, the rotating rollers convey the circuit boards.

[0012] In the transfer method of the circuit board of the present invention, during the entire process of transferring the circuit board from the cart to the loading area of the circuit board testing machine, there is no need for an operator to carry it. This can not only avoid bumps and damages to the circuit board during manual transfer, ensure the quality of the circuit board, but also reduce the labor intensity of the operator, and improve the transfer efficiency of the circuit board, thereby effectively improving the overall testing efficiency of the circuit board.

[0013] Preferably, it further includes step S7: The cart is unlocked and pulled away.

[0014] Therefore, the cart can be prepared for transferring a new circuit board to be tested.

[0015] Preferably, in step S6, after the circuit board on the roller of the conveying device is conveyed, the roller on the conveying device moves downward to prepare for the next transfer of the circuit board.

[0016] Therefore, the roller on the conveying device after moving downward can be prepared for transferring a new circuit board to be tested.

[0017] Preferably, the distance between two adjacent carrier rods is greater than the diameter of the roller.

[0018] Therefore, it is ensured that when the roller moves upward, the roller can smoothly move upward from the gap between two adjacent carrier rods and hold the circuit board on the carrier rod.

[0019] Preferably, the detection component is a contact switch and the number is two.

[0020] When both ends of the front end of the cart trigger the two detection components simultaneously, the cart is locked and cannot move.

[0021] Therefore, the cart will be locked only when the two detection components are triggered simultaneously. If the two detection components are not triggered simultaneously, it means that the cart is not pushed in correctly. When the cart is not pushed in correctly, the roller on the conveying device cannot move upward from the gap between two adjacent carrier rods on the cart, and interference will occur between the roller and the carrier rod. The setting of the two detection components can ensure that the cart is locked only after it is correctly pushed in.

[0022] Preferably, in step S4, a locking component is provided below the conveying device. The locking component includes a driving component and a locking rod, and the driving component drives the locking rod to rotate.

[0023] When the two detection components are triggered simultaneously, the driving component drives the locking rod to rotate to lock the front end of the cart.

[0024] Therefore, when two detection components are triggered simultaneously, the driving component drives the locking rod to rotate to lock the front end of the cart, at which time the cart is fixed and cannot move, preparing for the transfer of the circuit board from the carrying rod by the roller. When it is necessary to unlock the front end of the cart, the driving component drives the locking rod to rotate in the reverse direction to unlock the front end of the cart and pull away the cart, preparing for the transfer of a new circuit board to be tested.

[0025] Preferably, the driving component is a rotary telescopic cylinder, and the rotary telescopic cylinder drives the locking rod to rotate and move horizontally.

[0026] When the detection component is triggered, the rotary telescopic cylinder drives the locking rod to rotate and move horizontally so that the locking rod is buckled outward on the cart.

[0027] Therefore, when the two ends of the front end of the cart respectively abut against the two detection components simultaneously, it indicates that the cart is correctly pushed in. At this time, the driving rod of the rotary telescopic cylinder drives the locking rod to rotate a certain angle (such as 90 degrees), and then the driving rod of the rotary telescopic cylinder makes a retracting action, and the locking rod can be buckled outward on the cart to complete the fixation of the cart. When unlocking is required, the driving rod of the rotary telescopic cylinder makes an extending action, and then the driving rod of the rotary telescopic cylinder drives the locking rod to rotate in the reverse direction by a certain angle (such as 90 degrees), and at this time the cart can be pulled away.

[0028] Preferably, it further includes a switch, and the switch is electrically connected to the driving component.

[0029] Therefore, when it is necessary to unlock the locking of the cart, the operator can press the switch. After the switch is pressed, the driving component drives the locking rod to rotate in the reverse direction to unlock the front end of the cart, and the front end of the cart can be automatically locked and unlocked through the switch.

[0030] Preferably, in step S3, two longitudinally arranged limiting plates are provided below the conveying device, and both detection components are located between the two limiting plates. A guiding plate is provided on the limiting plate, and the guiding plate and the limiting plate are arranged at an obtuse angle.

[0031] Therefore, when the cart is correctly pushed in, the front end of the cart is located between the two limiting plates. During the process of pushing the cart in, as long as it is ensured that the two ends of the front end of the cart are located between the two guiding plates, the front end of the cart can be accurately pushed between the two limiting plates so that the two ends of the front end of the cart can simultaneously trigger the two detection components. The guiding plate can guide the front end of the cart to be smoothly pushed between the two limiting plates to simultaneously trigger the two detection components.

[0032] Preferably, the distance between the two limiting plates is greater than the width of the front end of the cart.

[0033] Therefore, the distance between the two limit plates can be slightly greater than the width of the front end of the trolley, ensuring that the front end of the trolley can be smoothly pushed between the two limit plates and that the front end of the trolley will not be pushed between the two limit plates obliquely. If the front end of the trolley is pushed obliquely between the two limit plates, the rollers on the conveying device cannot move upward through the gap between two adjacent carrying rods on the trolley, and interference will occur between the rollers and the carrying rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a flowchart of a method for transporting a circuit board according to the present invention;

[0035] Figure 2 is a schematic structural diagram of a system for transporting a circuit board adapted to the transportation method of the present invention;

[0036] Figure 3 is Figure 2 a side view of the system shown in FIG. with the trolley hidden;

[0037] Figure 4 is Figure 3 a schematic structural diagram of another perspective of the system shown in FIG.

[0038] Figure 5 is Figure 2 a schematic structural diagram of another perspective of the system shown in FIG. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements.

[0041] First, the structure of the system for transporting circuit boards adapted to the transportation method of the present invention will be described.

[0042] Refer to Figures 2 to 5 , the system for transporting circuit boards adapted to the transportation method of the present invention includes a trolley 1, a conveying device 2, a detection component 3, a locking component 4, a switch 5, a limiting plate 6, a driving device 7, a U-shaped bracket 8, a bearing plate 9, and a guide post 10.

[0043] Refer to Figure 2 and Figure 5 , a plurality of parallel arranged bearing rods 11 are installed on the trolley 1, and the ends of the bearing rods 11 are fixed on the longitudinal plate 12 on the trolley 1. The longitudinal plate 12 can be used to install and fix the bearing rods 11. When circuit boards are placed on the bearing rods 11, one side of each stack of circuit boards can abut against the longitudinal plate 12, and during the movement of the trolley 1, the circuit boards can be prevented from sliding backward.

[0044] Refer to Figure 2 and Figure 5 , a cross beam 13 is provided at the front end of the trolley 1, and the cross beam 13 is integrally formed with the frame part of the trolley 1.

[0045] Refer to Figures 2 to 5 , the conveying device 2 includes a plurality of parallel arranged and rotatable rollers 21, and a driving motor 22 is installed on the side of the conveying device 2. The driving motor 22 can drive all the rollers 21 to rotate synchronously by using an existing transmission mechanism (such as a synchronous pulley + synchronous belt structure).

[0046] Refer to Figure 3 and Figure 4The U-shaped bracket 8 includes a connecting frame 801, a left frame 802 and a right frame 803. The left frame 802, the connecting frame 801 and the right frame 803 are sequentially connected as a whole to form a U-shaped bracket 8 with an open side and an overall U-shape.

[0047] The conveying device 2 is slidably mounted on the U-shaped bracket 8. Figure 4 The conveying device 2 is installed on the top of the carrying plate 9, and a horizontal plate 91 is formed at the bottom of the carrying plate 9. The horizontal plate 91 is sleeved on the guide column 10 through a shaft sleeve. The carrying plate 9 can move up and down along the guide column 10. The connecting frame 801 is in the shape of a U-shaped letter "U". The top and bottom of the guide column 10 are respectively fixed on the top and bottom of the connecting frame 801 of the U-shaped bracket 8. The guide column 10 is arranged longitudinally. In this embodiment, the driving device 7 is a motor. In other embodiments, the driving device 7 can also be a cylinder. The horizontal plate 91 at the bottom of the carrying plate 9 is fixed on the driving shaft of the driving device 7. The driving device 7 can drive the carrying plate 9 to move up and down, and the carrying plate 9 can drive the conveying device 2 to move up or down.

[0048] See also Figure 4 In this embodiment, there are two driving devices 7 and two guide posts 10, and the two guide posts 10 are arranged in parallel. The two driving devices 7 can simultaneously drive the carrier plate 9 to move up and down smoothly along the two guide posts 10, thereby ensuring that the conveying device 2 moves up and down smoothly. In other embodiments, the number of driving devices 7 and guide posts 10 can be appropriately adjusted according to the size of the conveying device 2.

[0049] The detection component 3 is installed below the conveying device 2. Figure 3, in this embodiment, the detection component 3 is a contact switch and the number thereof is two, the number of the limiting plates 6 is two, the outer ends of the two limiting plates 6 are both fixed on the connecting frame 801 of the U-shaped bracket 8, the two limiting plates 6 are arranged longitudinally and in parallel, the two detection components 3 are respectively fixed on the connecting frame 801 of the U-shaped bracket 8, the two detection components 3 are located between the two limiting plates 6, the two detection components 3 are respectively close to the two limiting plates 6, a guiding plate 61 is formed on the inner end of the limiting plate 6, the guiding plate 61 and the limiting plate 6 are arranged at an obtuse angle, the two guiding plates 61 are arranged in a V shape. An operator pushes the trolley 1 between the left side frame 802 and the right side frame 803 of the U-shaped bracket 8. When the cross beam 13 at the front end of the trolley 1 is pushed between the two limiting plates 6, the two ends of the cross beam 13 at the front end of the trolley 1 can respectively and simultaneously abut against the two detection components 3, and the two detection components 3 are triggered simultaneously. When the two detection components 3 are triggered simultaneously, the locking component 4 locks the cross beam 13 at the front end of the trolley 1, and the trolley 1 is fixed and cannot move. Only when the two detection components 3 are triggered simultaneously will the locking component 4 lock the cross beam 13 at the front end of the trolley 1. If the two detection components 3 are not triggered simultaneously, it means that the trolley 1 is pushed in obliquely. During the process of pushing the trolley 1, as long as it is ensured that the two ends of the cross beam 13 at the front end of the trolley 1 are located between the two guiding plates 61, the cross beam 13 can be accurately pushed between the two limiting plates 6 so that the two ends of the cross beam 13 trigger the two detection components 3 simultaneously. The guiding plate 61 can guide the cross beam 13 at the front end of the trolley 1 to be smoothly pushed between the two limiting plates 6 to trigger the two detection components 3 simultaneously.

[0050] The distance between the two limiting plates 6 is greater than the length of the cross beam 13 at the front end of the trolley 1. The distance between the two limiting plates 6 only needs to be slightly greater than the length of the cross beam 13, ensuring that the cross beam 13 can be smoothly pushed between the two limiting plates 6 and that the cross beam 13 will not be pushed between the two limiting plates 6 obliquely. If the cross beam 13 is pushed obliquely between the two limiting plates 6, the roller 21 on the conveying device 2 cannot move upward from the gap between two adjacent carrying rods 11 on the trolley 1, and interference will occur between the roller 21 and the carrying rod 11.

[0051] The locking component 4 is installed below the conveying device 2. Specifically, refer to Figure 3 , the locking component 4 includes a driving component 41 and a locking rod 42. In this embodiment, the driving component 41 is a rotary telescopic cylinder. The driving component 41 is fixed on the connecting frame 801 of the U-shaped bracket 8. One end of the locking rod 42 is fixed on the driving rod of the rotary telescopic cylinder. The rotary telescopic cylinder and the locking rod 42 are located between the two detection components 3. The rotary telescopic cylinder can drive the locking rod 42 to rotate and move horizontally ( Figure 2In the left - right direction), when the cross - beams 13 at the front end of the cart 1 respectively and simultaneously abut against the two detection components 3, the two detection components 3 are triggered simultaneously, indicating that the cart 1 is correctly pushed in. At this time, the driving rod of the rotary telescopic cylinder drives the locking rod 42 to rotate by a certain angle (such as 90 degrees), and then the driving rod of the rotary telescopic cylinder performs a retraction action, and the locking rod 42 can buckle outward ( Figure 3 in the A direction in) on the cross - beam 13 at the front end of the cart 1 to complete the fixation of the cart 1. When unlocking is required, the driving rod of the rotary telescopic cylinder performs an extension action, and then the driving rod of the rotary telescopic cylinder drives the locking rod 42 to rotate reversely by a certain angle (such as 90 degrees), and at this time, the cart 1 can be pulled out from between the left - hand frame 502 and the right - hand frame 503 of the U - shaped bracket 8.

[0052] Refer to Figure 3 , the switch 5 is fixed on the right - hand frame 803 of the U - shaped bracket 8. The switch 5 is connected to the driving component 41 through a wire harness. When unlocking the locking of the cross - beam 13 at the front end of the cart 1 is required, an operator can press the switch 5. After the switch 5 is pressed, the driving rod of the rotary telescopic cylinder performs an extension action, and then the driving rod of the rotary telescopic cylinder drives the locking rod 42 to rotate reversely by a certain angle (such as 90 degrees), and the unlocking of the cross - beam 13 at the front end of the cart 1 is completed.

[0053] In other embodiments, the rotary telescopic cylinder and the locking rod 42 can also be replaced by a motor and a locking hook. The motor can drive the locking hook to rotate. When the two ends of the cross - beam 13 at the front end of the cart 1 can respectively abut against the two detection components 3, the motor drives the locking hook to rotate so that the locking hook hooks the cross - beam 13. When unlocking is required, the motor drives the locking hook to rotate so that the locking hook disengages from the cross - beam 13.

[0054] Refer to Figure 5 , the distance between two adjacent carrying rollers 11 is greater than the diameter of the roller 21, ensuring that the roller 21 can move upward ( Figure 2 in the direction from bottom to top in) through the gap between two adjacent carrying rollers 11 and support the circuit board on the carrying roller 11.

[0055] A controller (micro - controller or CPU) can be installed on the U - shaped bracket 8. The driving motor 22, the driving device 7, the detection component 3, and the driving component 41 are connected to the controller through a wire harness. The switch signal generated when the detection component 3 is triggered can be sent to the controller. The working modes of the driving motor 22, the driving device 7, and the driving component 41 can be preset by the controller, and the controller can control the coordinated work of the driving motor 22, the driving device 7, and the driving component 41.

[0056] Refer to Figures 2 to 5 , for a system for transporting circuit boards adapted to the transfer method of the present invention, place multiple stacks of circuit boards to be tested on the carrying rollers 11 on the cart 1. One side of each stack of circuit boards abuts against the longitudinal plate 12, and the operator moves the cart 1 alongFigure 5 Push it in the F direction between the left frame 802 and the right frame 803 of the U-shaped bracket 8. The carrier rod 11 is located above the roller 21 of the conveying device 2. As the cart 1 continues to be pushed in, under the guiding action of the two guiding plates 61, the cross beam 13 at the front end of the cart 1 is pushed between the two limiting plates 6. Both ends of the cross beam 13 simultaneously abut against the two detecting components 3 respectively, and the two detecting components 3 are triggered simultaneously. When the two detecting components 3 are triggered simultaneously, the driving rod of the driving component 41 drives the locking rod 42 to rotate by a certain angle, and then the driving rod of the driving component 41 makes a retracting action. The locking rod 42 is buckled outward on the cross beam 13 at the front end of the cart 1 to complete the fixation of the cart 1. Then, under the action of the driving device 7, the roller 21 moves upward. Since the carrier rod 11 and the roller 21 are staggered in the longitudinal direction at this time and the distance between two adjacent carrier rods 11 is greater than the diameter of the roller 21, the roller 21 will move upward from the gap between two adjacent carrier rods 11 and support the circuit board on the carrier rod 11. As the roller 21 continues to move upward, multiple stacks of circuit boards on the carrier rod 11 are transferred to the roller 21. When the bottom of the roller 21 is higher than the top of the carrier rod 11, under the action of the driving motor 22, the rotating roller 21 can convey the circuit board, so as to convey the circuit board to be tested to the loading area of the circuit board tester. Then, the driving rod of the driving component 41 makes an extending action and drives the locking rod 42 to rotate reversely by a certain angle. At this time, the cart 1 can be pulled out between the left frame 802 and the right frame 803 of the U-shaped bracket 8. When all the circuit boards on the roller 21 are conveyed to the loading area of the circuit board tester (it can be set that the working time of the driving motor 22 is T. After the driving motor 22 works for time T, all the circuit boards on the roller 21 can be conveyed to the loading area of the circuit board tester), the driving device 7 drives the roller 21 to move downward to prepare for the next transfer of the circuit board to be tested. During the process of pushing the cart 1 in, if the two detecting components 3 are not triggered simultaneously, it means that the cart 1 is pushed in obliquely. When the cart 1 is pushed in obliquely, the roller 21 of the conveying device 2 cannot move upward from the gap between two adjacent carrier rods 11, and interference will occur between the roller 21 and the carrier rod 11. The setting of the two detecting components 3 can ensure that the locking component 4 will lock the cross beam 13 at the front end of the cart 1 only after the cart 1 is correctly pushed in; for the system for transferring circuit boards adapted to the transfer method of the present invention, during the whole process of transferring the circuit board from the cart 1 to the loading area of the circuit board tester, there is no need for operators to carry it, which can not only avoid bumps and damages of the circuit board during manual transfer, ensure the quality of the circuit board, but also reduce the labor intensity of the operators, and the transfer efficiency of the circuit board is also improved, so as to effectively improve the overall testing efficiency of the circuit board.

[0057] Figure 1 Schematically shows the flow of a method for transferring a circuit board according to the present invention.

[0058] Refer to Figure 1 and use Figures 2 to 5 a method for transporting a circuit board of the system for transporting a circuit board shown in Figures 2 to 5 , including the following steps:

[0059] 101: Place multiple stacks of circuit boards to be tested on the trolley 1. There are multiple parallel arranged carrying rods 11 on the trolley 1, and the multiple stacks of circuit boards to be tested are placed on the carrying rods 11.

[0060] 102: Push the trolley 1 towards the conveying device 2. There are multiple parallel arranged rotatable rollers 21 on the conveying device 2, and the carrying rods 11 on the trolley 1 are located above the rollers 21 on the conveying device 2.

[0061] 103: The front end of the trolley 1 triggers the detection component 3 below the conveying device 2, and the carrying rods 11 on the trolley 1 and the rollers 21 on the conveying device 2 are arranged staggeredly in the longitudinal direction;

[0062] The distance between two adjacent carrying rods 11 is greater than the diameter of the roller 21, ensuring that when the roller 21 moves upward, the roller 21 can smoothly move upward from the gap between two adjacent carrying rods 11 and support the circuit board on the carrying rod 11;

[0063] In this embodiment, the detection component 3 is a contact switch and the number is two. When the two ends of the cross beam 13 at the front end of the trolley 1 trigger the two detection components 3 simultaneously, the trolley 1 is locked by the locking component 4 and cannot move;

[0064] Two longitudinally arranged limiting plates 6 are installed below the conveying device 2. Both detection components 3 are located between the two limiting plates 6. A guiding plate 61 is formed on the limiting plate 6, and the guiding plate 61 is arranged at an obtuse angle with the limiting plate 6. When the trolley 1 is correctly pushed in, the cross beam 13 at the front end of the trolley 1 is located between the two limiting plates 6. During the process of pushing the trolley 1 in, as long as it is ensured that the two ends of the cross beam 13 at the front end of the trolley 1 are located between the two guiding plates 61, the front end of the trolley 1 can be accurately pushed between the two limiting plates 6 so that the two ends of the cross beam 13 at the front end of the trolley 1 trigger the two detection components 3 simultaneously. The guiding plate 61 can guide the cross beam 13 at the front end of the trolley 1 to be smoothly pushed between the two limiting plates 6 to trigger the two detection components 3 simultaneously;

[0065] The distance between the two limit plates 6 is greater than the length of the cross beam 13 at the front end of the trolley 1. The distance between the two limit plates 6 can be slightly greater than the length of the cross beam 13 at the front end of the trolley 1, ensuring that the cross beam 13 at the front end of the trolley 1 can be smoothly pushed between the two limit plates 6 and also ensuring that the front end of the trolley 1 will not be tilted and pushed between the two limit plates 6. If the cross beam 13 at the front end of the trolley 1 is tilted and pushed between the two limit plates 6, the rollers 21 on the conveying device 2 cannot move upward from the gap between two adjacent bearing rods 11 on the trolley 1, and interference will occur between the rollers 21 and the bearing rods 11.

[0066] 104: When the detection component 3 is triggered, the trolley 1 is locked and cannot move;

[0067] The locking component 4 is installed below the conveying device 2. The locking component 4 includes a driving component 41 and a locking rod 42. The driving component 41 drives the locking rod 42 to rotate. When the two detection components 3 are triggered simultaneously, the driving component 41 drives the locking rod 42 to rotate to lock the cross beam 13 at the front end of the trolley 1;

[0068] The driving component 41 is a rotary telescopic cylinder. The rotary telescopic cylinder drives the locking rod 42 to rotate and move horizontally. When the two detection components 3 are triggered simultaneously, the rotary telescopic cylinder drives the locking rod 42 to rotate and move horizontally so that the locking rod 42 buckles outward on the cross beam 13 at the front end of the trolley 1.

[0069] 105: The roller 21 on the conveying device 2 moves upward. The roller 21 moves upward from the gap between two adjacent bearing rods 11 on the trolley 1 and supports the circuit board on the bearing rod 11;

[0070] Under the action of the driving device 7, the roller 21 moves upward. Since the bearing rod 11 and the roller 21 are staggeredly arranged longitudinally at this time and the distance between two adjacent bearing rods 11 is greater than the diameter of the roller 21, the roller 21 will move upward from the gap between two adjacent bearing rods 11 and support the circuit board on the bearing rod 11.

[0071] 106: When the bottom of the roller 21 on the conveying device 2 is higher than the top of the bearing rod 11 on the trolley 1, the rotating roller 21 conveys the circuit board;

[0072] As the roller 21 continues to move upward, multiple stacks of circuit boards on the bearing rod 11 are transferred to the roller 21. When the bottom of the roller 21 is higher than the top of the bearing rod 11, under the action of the driving motor 22, the rotating roller 21 can convey the circuit board, thereby conveying the circuit board to be tested to the loading area of the circuit board tester;

[0073] When the circuit board on the roller 21 on the conveying device 2 is conveyed, under the action of the driving device 7, the roller 21 moves downward to prepare for the next transfer of the circuit board.

[0074] 107: The cart 1 is unlocked and pulled away;

[0075] The switch 5 is connected to the drive component 41 through a wire harness. When it is necessary to unlock the lock on the cross beam 13 at the front end of the cart 1, the operator can press the switch 5. After the switch 5 is pressed, the drive rod of the rotary telescopic cylinder extends, and then the drive rod of the rotary telescopic cylinder drives the lock rod 42 to rotate reversely by a certain angle (such as 90 degrees), and the unlocking of the cross beam 13 at the front end of the cart 1 is completed. The cart 1 is pulled away, and the pulled-away cart 1 can be prepared for transporting a new circuit board to be tested.

[0076] In the circuit board transfer method of the present invention, during the entire process of transferring the circuit board from the cart 1 to the loading area of the circuit board tester, there is no need for the operator to carry it. It can not only avoid bumps and damages to the circuit board during manual transfer, ensure the quality of the circuit board, but also reduce the labor intensity of the operator, and the transfer efficiency of the circuit board is also improved, thereby effectively improving the overall testing efficiency of the circuit board.

[0077] The above are only some embodiments of the present invention, aiming to illustrate the technical means of the present invention, not to limit the technical scope of the present invention. Obvious improvements made by those skilled in the art in combination with the existing common general knowledge fall within the protection scope of the present invention.

Claims

1. A method for transporting a circuit board, comprising the following steps: S1: Place multiple stacks of circuit boards to be tested on a trolley. Multiple parallel arranged bearing rods are provided on the trolley, and the multiple stacks of circuit boards to be tested are placed on the bearing rods; S2: Push the trolley towards the conveying device. Multiple rotatable rollers arranged in parallel are provided on the conveying device, and the bearing rods on the trolley are located above the rollers on the conveying device; S3: The front end of the trolley triggers the detection component below the conveying device, and the bearing rods on the trolley and the rollers on the conveying device are arranged staggeredly in the longitudinal direction; S4: When the detection component is triggered, the trolley is locked and cannot move; S5: The rollers on the conveying device move upward. The rollers move upward from the gap between two adjacent bearing rods on the trolley and support the circuit boards on the bearing rods; S6: When the bottom of the rollers on the conveying device is higher than the top of the bearing rods on the trolley, the rotating rollers convey the circuit boards.

2. The transfer method according to claim 1, characterized in that, It further includes step S7: The trolley is unlocked and pulled away.

3. The transfer method according to claim 1, wherein In step S6, when the circuit boards on the rollers of the conveying device are conveyed, the rollers on the conveying device move downward to prepare for the next transportation of the circuit boards.

4. The transfer method according to claim 1, characterized in that, In step S3, the distance between two adjacent bearing rods is greater than the diameter of the rollers.

5. The transfer method according to claim 1, characterized in that, In step S3, the detection component is a contact switch and the number is two. When the two ends of the front end of the trolley trigger the two detection components simultaneously, the trolley is locked and cannot move.

6. The transfer method according to claim 5, wherein In step S4, a locking component is provided below the conveying device. The locking component includes a driving component and a locking rod. The driving component drives the locking rod to rotate. When the two detection components are triggered simultaneously, the driving component drives the locking rod to rotate to lock the front end of the trolley.

7. The transfer method according to claim 6, characterized in that The driving component is a rotary telescopic cylinder. The rotary telescopic cylinder drives the locking rod to rotate and move horizontally. When the detection component is triggered, the rotary telescopic cylinder drives the locking rod to rotate and move horizontally so that the locking rod is buckled outward on the trolley.

8. The transfer method according to claim 6, wherein It further includes a switch, and the switch is electrically connected to the driving component.

9. The transfer method according to claim 5, characterized in that, In step S3, two longitudinally arranged limiting plates are provided below the conveying device. Both detection components are located between the two limiting plates. A guiding plate is provided on the limiting plate, and the guiding plate and the limiting plate are arranged at an obtuse angle.

10. The transfer method according to claim 9, characterized in that, The distance between the two limiting plates is greater than the width of the front end of the trolley.

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