System for transferring circuit board

Abstract

The utility model discloses a system for transferring a circuit board, which comprises a conveying device, a driving device, a detection component, a locking component, a cart and supporting legs, the conveying device comprises a plurality of rollers, the driving device drives the conveying device to move up and down, the detection component is arranged below the conveying device, the locking component is arranged below the conveying device, and the cart is arranged below the rollers. A plurality of bearing rollers are arranged on the cart, the bearing rollers on the cart can be pushed above the conveying device, the bearing rollers and the rollers are arranged in a staggered mode in the longitudinal direction, the front end of the cart can abut against the detection component and trigger the detection component, the locking component can lock the front end of the cart, and the supporting legs can adjust the height of the conveying device. According to the system provided by the utility model, the circuit board does not need to be carried by an operator in the whole process of transferring the circuit board from the cart to the feeding area of the circuit board testing machine, so that 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] This utility model relates to a system for transferring circuit boards. Background Technology

[0002] Circuit board functional testing is a testing process for printed circuit boards in the electronics manufacturing industry. It aims to verify whether the entire circuit system on the circuit board is working properly according to the design specifications. This test is crucial for ensuring product quality, reliability, and performance.

[0003] In existing circuit board testing machines, the loading area is usually a loading conveyor belt. Before testing, operators use a trolley to push the cleaned circuit boards to the side of the loading conveyor belt. Then, the operators move the stacks of circuit boards to be tested from the trolley onto the loading conveyor belt. This method of transferring circuit boards is labor-intensive, which reduces the overall testing efficiency of the circuit boards. Moreover, the circuit boards are easily bumped and damaged during the handling process, resulting in defective products and increased costs. Utility Model Content

[0004] The purpose of this invention is to provide a system for transferring circuit boards to solve at least one of the above-mentioned technical problems.

[0005] According to one aspect of the present invention, a system for transferring circuit boards is provided, comprising:

[0006] A conveying device, comprising multiple parallel and rotatable rollers;

[0007] The drive unit drives the conveyor to move up and down.

[0008] The detection component is located below the conveying device;

[0009] A locking component is located below the conveying device;

[0010] The trolley has multiple parallel support rollers. These rollers are positioned above the conveyor and are staggered longitudinally from the rollers. The distance between two adjacent rollers is greater than the diameter of the rollers. The trolley is equipped with casters with brakes at the bottom.

[0011] When the support roller on the trolley is pushed above the conveying device, the front end of the trolley can abut against the detection component and trigger the detection component.

[0012] When the detection component is triggered, the locking component locks the front end of the cart to secure it; and

[0013] Support legs allow for adjustment of the height of the conveyor.

[0014] This invention relates to a system for transferring circuit boards. Multiple stacks of circuit boards to be tested are placed on a support roller. An operator pushes a trolley towards a conveyor device. The support roller is positioned above the rollers of the conveyor device. When the front end of the trolley abuts against a detection component, the detection component is triggered. Upon triggering, a locking component locks the front end of the trolley, fixing it in place. Simultaneously, the casters can be locked to further prevent movement. Then, under the action of a drive device, the rollers on the conveyor device move upwards. Because the support rollers and rollers are staggered longitudinally, and the distance between two adjacent support rollers is greater than the diameter of the roller, the roller moves upwards through the gap between adjacent support rollers and supports the circuit boards on the support rollers. As the roller continues to move upwards, the circuit boards on the support rollers are transferred to the roller. When the bottom of the roller is higher than the top of the support roller, the rotating roller on the conveyor device can then test the circuit boards. The conveyor system transports the circuit boards to be tested to the loading area of ​​the circuit board testing machine. Then, a locking mechanism unlocks the front of the trolley, pulling it out. When all the circuit boards on the rollers have been transported to the loading area, the drive unit moves the rollers on the conveyor downwards, preparing for the next transfer of circuit boards to be tested. Operators can adjust the height of the conveyor system using the support legs, based on the height of the support rollers on the trolley, ensuring that the support rollers on the trolley are above the rollers when the trolley is pushed towards the conveyor system. Throughout the entire process of transferring the circuit boards from the trolley to the loading area of ​​the circuit board testing machine, no manual handling is required. This avoids bumps and damage to the circuit boards during manual transport, ensuring their quality, reducing the labor intensity of operators, and improving the overall testing efficiency of the circuit boards.

[0015] Furthermore, it also includes a U-shaped support with an open side, on which the conveying device slides. Two contact switches are used as detection components, which are mounted on the U-shaped support. A crossbeam is located at the front of the trolley, with both ends of the crossbeam abutting against the two detection components. A locking component is located on the U-shaped support between the two detection components, and support legs are located at the bottom of the U-shaped support.

[0016] When both detection components are triggered simultaneously, the locking component locks the crossbeam at the front of the trolley to secure the trolley.

[0017] Therefore, the operator pushes the trolley from the open part of the U-shaped bracket towards the conveying device. When both ends of the crossbeam at the front of the trolley simultaneously abut against the two contact switches, the two contact switches are triggered at the same time. At this time, the locking component locks the crossbeam at the front of the trolley, fixing the trolley in place and preventing it from moving. Then, under the action of the drive device, the roller on the conveying device moves upward. The roller moves upward from the gap between two adjacent support rollers and supports the circuit board on the support roller. As the roller continues to move upward, the circuit board on the support roller is transferred to the roller. When the bottom of the roller is higher than the top of the support roller, the rotating roller on the conveying device can convey the circuit board. The locking component will only lock the crossbeam at the front of the trolley if both detection components are triggered simultaneously. If the two detection components are not triggered simultaneously, it means that the trolley is pushed in at an angle. When the trolley is pushed in at an angle, the roller cannot move upward from the gap between two adjacent support rollers, and the roller will interfere with the support roller. The setting of the two detection components ensures that the locking component will lock the crossbeam at the front of the trolley only after the trolley is pushed in correctly.

[0018] Furthermore, the locking mechanism includes a rotary telescopic cylinder and a locking rod, the rotary telescopic cylinder being able to drive the locking rod to rotate and move horizontally.

[0019] When both ends of the crossbeam can abut against the two detection components respectively, the rotary telescopic cylinder drives the locking rod to rotate and move horizontally so that the locking rod is hooked outward onto the crossbeam.

[0020] Therefore, when both ends of the crossbeam at the front of the trolley simultaneously abut against the two detection components, it indicates that the trolley has been correctly pushed in. At this time, the drive rod of the rotary telescopic cylinder drives the locking rod to rotate a certain angle (such as 90 degrees), and then the drive rod of the rotary telescopic cylinder retracts, so that the locking rod can be fastened outward to the crossbeam to complete the fixation of the trolley. When unlocking is required, the drive rod of the rotary telescopic cylinder extends, and then the drive rod of the rotary telescopic cylinder drives the locking rod to rotate in the opposite direction by a certain angle (such as 90 degrees), at which point the trolley can be pulled out.

[0021] Furthermore, it also includes a switch, which is mounted on a U-shaped bracket and is electrically connected to the rotary telescopic cylinder.

[0022] Therefore, when it is necessary to unlock the crossbeam at the front of the trolley, the operator can press the switch. After the switch is pressed, the drive rod of the rotary telescopic cylinder extends, and then the drive rod of the rotary telescopic cylinder drives the locking rod to rotate in the opposite direction by a certain angle, thus unlocking the crossbeam at the front of the trolley.

[0023] Furthermore, it also includes two mounting plates, the outer ends of which are both mounted on a U-shaped bracket. The two mounting plates are arranged longitudinally, and the two detection components are located between the two mounting plates. The inner ends of the mounting plates are provided with guide plates, which are arranged at an obtuse angle to the mounting plates.

[0024] Therefore, when the trolley is pushed in correctly, the crossbeam at the front of the trolley is located between the two mounting plates. During the process of pushing the trolley in, as long as both ends of the crossbeam are located between the two guide plates, the crossbeam can be accurately pushed between the two mounting plates so that both ends of the crossbeam can trigger the two detection components at the same time. The guide plates can guide the crossbeam at the front of the trolley to be smoothly pushed between the two mounting plates so as to trigger the two detection components at the same time.

[0025] Furthermore, the distance between the two mounting plates is greater than the length of the crossbeam.

[0026] Therefore, the distance between the two mounting plates can be slightly greater than the length of the crossbeam to ensure that the crossbeam can be smoothly pushed between the two mounting plates without tilting it. If the crossbeam is tilted between the two mounting plates, the roller cannot move upward from the gap between the two adjacent bearing rollers, and the roller will interfere with the bearing roller.

[0027] Furthermore, it also includes a support plate and guide columns. The driving device is a motor. The conveying device is located on the top of the support plate. The guide columns are located on the U-shaped bracket and arranged longitudinally. The bottom of the support plate slides on the guide columns. The driving device drives the support plate to move up and down.

[0028] Therefore, the drive unit can drive the conveying device to move up and down through the support plate. The bottom of the support plate slides on the guide column to ensure that the conveying device can move up and down smoothly.

[0029] Furthermore, the trolley includes a trolley body, a support frame, and a limiting rod. A hinge rod is provided at the front end of the top of the trolley body. One end of the support frame is hinged to the hinge rod, and a locking block is provided at the other end of the support frame. The end of the limiting rod is hinged to the trolley body, and a locking step is provided on the limiting rod. The bottom of the locking block can press against the locking step. The support rod is provided on the support frame.

[0030] Therefore, before transporting the circuit boards, the trolley rotates the limiting rod to separate the locking step on the limiting rod from the locking block on the carrier frame. Since one end of the carrier frame is hinged to the hinge rod, the other end of the carrier frame will move downwards and abut against the top of the trolley. At this time, the carrier frame is tilted, and the carrier rod on the carrier frame is also tilted, with the front end higher than the rear end, ensuring that the circuit boards on the carrier rod will not slip forward during transport. When the operator pushes the trolley toward the conveyor and the carrier rod is above the roller of the conveyor, the end of the carrier frame with the locking block is lifted upwards, and the limiting rod is rotated so that the bottom of the locking block on the carrier frame abuts against the locking step on the limiting rod. At this time, the carrier frame and the carrier rod on the carrier frame are in a horizontal state, preparing for the roller to move upwards from the gap between two adjacent carrier rods. If the carrier rod is tilted, during the process of the roller moving upwards from the gap between two adjacent carrier rods to support the circuit boards, one or more circuit boards at the top of each stack of circuit boards on the carrier rod may slip, causing the circuit boards to collide and become defective.

[0031] Furthermore, the bottom of the snap-fit ​​block is sloped, and the snap-fit ​​steps are arranged at an angle.

[0032] Therefore, the bottom of the inclined snap-fit ​​block cooperates with the inclined snap-fit ​​steps to ensure that the snap-fit ​​block and snap-fit ​​steps will not easily separate when the support frame and support rod are in a horizontal state.

[0033] Furthermore, it also includes an L-shaped limiting rod, the longitudinal section of which is located on the other end of the support frame, and the transverse section of which can hook upwards onto the vehicle body.

[0034] Therefore, when the operator pushes the trolley toward the conveyor and the bearing roller is above the roller of the conveyor, during the process of lifting one end of the mounting block of the bearing frame upward, the transverse section of the L-shaped limit rod can limit the height of the bearing frame being lifted upward, preventing the circuit board on the bearing roller from slipping due to excessive height of the bearing frame being lifted upward. Moreover, since the bottom of the mounting block is sloping and the mounting steps are arranged at an angle, when the limit rod is rotated, the mounting steps on the limit rod can be easily rotated to the bottom of the mounting block on the bearing frame. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a system for transferring circuit boards according to one embodiment of the present invention;

[0036] Figure 2 for Figure 1 The system shown is a side view with the trolley hidden.

[0037] Figure 3 for Figure 2 The diagram shown is a structural schematic of the system along direction A.

[0038] Figure 4 for Figure 2 The diagram shows another perspective of the system's structure.

[0039] Figure 5 for Figure 1 The diagram shows the structure of the trolley in the system shown.

[0040] Figure 6 for Figure 5 The diagram shows the structure of the trolley from another perspective;

[0041] Figure 7 for Figure 1 The diagram shows a trolley with its support frame tilted.

[0042] Figure 8 for Figure 1 The diagram shows a structural schematic of the system from another perspective. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0044] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0045] See Figures 1 to 8 A system for transferring circuit boards includes a conveying device 1, a driving device 2, a detection component 3, a locking component 4, a trolley 5, casters 501, a U-shaped bracket 6, a support leg 61, a switch 7, a mounting plate 8, a bearing plate 9, a guide post 10, and an L-shaped limiting rod 101.

[0046] See Figures 1 to 4 , Figure 8 The conveying device 1 includes multiple parallel and rotatable rollers 11. A drive motor 12 is installed on the side of the conveying device 1. The drive motor 12 can drive all the rollers 11 to rotate synchronously using existing transmission mechanisms (such as synchronous pulley + synchronous belt structure).

[0047] See Figure 2 and Figure 4 The U-shaped support 6 includes a connecting frame 601, a left side frame 602, and a right side frame 603. The left side frame 602, the connecting frame 601, and the right side frame 603 are connected in sequence to form a U-shaped support 6 with an open side.

[0048] Conveying device 1 is slidably mounted on U-shaped support 6. For details, please refer to [link / reference]. Figure 3 and Figure 4 The conveying device 1 is installed on the top of the bearing plate 9. The bottom of the bearing plate 9 is formed with a horizontal plate 91. The horizontal plate 91 is sleeved on the guide column 10 through a bushing. The bearing plate 9 can move up and down along the guide column 10. The connecting frame 601 is in the shape of a U-shape. The top and bottom of the guide column 10 are respectively fixed on the top and bottom of the connecting frame 601 of the U-shaped bracket 6. The guide column 10 is arranged longitudinally. In this embodiment, the driving device 2 is a motor. In other embodiments, the driving device 2 can also be a cylinder. The horizontal plate 91 at the bottom of the bearing plate 9 is fixed on the drive shaft of the driving device 2. The driving device 2 can drive the bearing plate 9 to move up and down. The bearing plate 9 can drive the conveying device 1 to move up or down.

[0049] See Figure 3 and Figure 4 In this embodiment, there are two drive devices 2 and two guide columns 10, which are arranged in parallel. The two drive devices 2 can simultaneously drive the support plate 9 to move smoothly up and down along the two guide columns 10, thereby ensuring that the conveying device 1 moves smoothly up and down. In other embodiments, the number of drive devices 2 and guide columns 10 can be adjusted appropriately according to the size of the conveying device 1.

[0050] The detection component 3 is installed below the conveying device 1; specifically, refer to [reference needed]. Figure 2 and Figure 3In this embodiment, the detection components 3 are contact switches, and there are two of them. There are also two mounting plates 8. The outer ends of both mounting plates 8 are fixed to the connecting frame 601 of the U-shaped bracket 6. The two mounting plates 8 are arranged longitudinally and parallel. The two detection components 3 are respectively fixed to the connecting frame 601 of the U-shaped bracket 6, located between the two mounting plates 8. The two detection components 3 are close to the two mounting plates 8. Guide plates 81 are formed on the inner ends of the mounting plates 8. The guide plates 81 are arranged at an obtuse angle to the mounting plates 8, and the two guide plates 81 are arranged in a V-shape. The operator pushes the trolley 5 between the left side frame 602 and the right side frame 603 of the U-shaped bracket 6. When the crossbeam 52 at the front end of the trolley 5 is pushed between the two mounting plates 8, the two ends of the crossbeam 52 at the front end of the trolley 5 can respectively... When the trolley 5 is pressed against the two detection components 3, both detection components 3 are triggered simultaneously. When both detection components 3 are triggered simultaneously, the locking component 4 locks the crossbeam 52 at the front end of the trolley 5, and the trolley 5 is fixed and cannot move. The locking component 4 will only lock the crossbeam 52 at the front end of the trolley 5 when both detection components 3 are triggered simultaneously. If the two detection components 3 are not triggered simultaneously, it means that the trolley 5 is pushed in at an angle. During the process of pushing the trolley 5 in, as long as the two ends of the crossbeam 52 at the front end of the trolley 5 are located between the two guide plates 81, the crossbeam 52 can be accurately pushed between the two mounting plates 8 so that the two ends of the crossbeam 52 can trigger the two detection components 3 simultaneously. The guide plate 81 can guide the crossbeam 52 at the front end of the trolley 5 to be pushed smoothly between the two mounting plates 8 so as to trigger the two detection components 3 simultaneously.

[0051] The distance between the two mounting plates 8 is greater than the length of the crossbeam 52 at the front end of the trolley 5. The distance between the two mounting plates 8 only needs to be slightly greater than the length of the crossbeam 52 to ensure that the crossbeam 52 can be pushed smoothly between the two mounting plates 8, and also to ensure that the crossbeam 52 is not pushed tilted between the two mounting plates 8. If the crossbeam 52 is pushed tilted between the two mounting plates 8, the roller 11 of the conveying device 1 will not be able to move upward from the gap between the two adjacent bearing rollers 51 on the trolley 5, and the roller 11 will interfere with the bearing roller 51.

[0052] The locking component 4 is installed below the conveying device 1; specifically, see [link to relevant documentation]. Figure 2 and Figure 3 The locking component 4 includes a rotary telescopic cylinder 41 and a locking rod 42. The rotary telescopic cylinder 41 is fixed on the connecting frame 601 of the U-shaped bracket 6. One end of the locking rod 42 is fixed on the drive rod of the rotary telescopic cylinder 41. The rotary telescopic cylinder 41 and the locking rod 42 are located between the two detection components 3. The rotary telescopic cylinder 41 can drive the locking rod 42 to rotate and move horizontally. Figure 3In the forward and backward direction, when both ends of the crossbeam 52 at the front end of the trolley 5 simultaneously abut against the two detection components 3, the two detection components 3 are triggered simultaneously, indicating that the trolley 5 has been pushed in correctly. At this time, the drive rod of the rotary telescopic cylinder 41 drives the locking rod 42 to rotate a certain angle (such as 90 degrees), and then the drive rod of the rotary telescopic cylinder 41 retracts, allowing the locking rod 42 to move outward. Figure 2 The lever 41 is fastened to the crossbeam 52 at the front end of the trolley 5 in direction A to secure the trolley 5. When unlocking is required, the drive rod of the rotary telescopic cylinder 41 extends, and then the drive rod of the rotary telescopic cylinder 41 drives the locking rod 42 to rotate in the opposite direction by a certain angle (such as 90 degrees). At this time, the trolley 5 can be pulled out from between the left side frame 602 and the right side frame 603 of the U-shaped bracket 6.

[0053] See Figure 2 and Figure 3 The switch 7 is fixed on the right side frame 603 of the U-shaped bracket 6. The switch 7 is connected to the rotary telescopic cylinder 41 through a wiring harness. When it is necessary to unlock the crossbeam 52 at the front of the trolley 5, the operator can press the switch 7. After the switch 7 is pressed, the drive rod of the rotary telescopic cylinder 41 extends. Then, the drive rod of the rotary telescopic cylinder 41 drives the locking rod 42 to rotate in the opposite direction by a certain angle (such as 90 degrees), thus unlocking the crossbeam 52 at the front of the trolley 5.

[0054] In other embodiments, the rotary telescopic cylinder 41 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 crossbeam 52 at the front end of the trolley 5 can respectively abut against the two detection components 3, the motor drives the locking hook to rotate so that the locking hook hooks onto the crossbeam 52. When unlocking is required, the motor drives the locking hook to rotate so that the locking hook disengages from the crossbeam 52.

[0055] See Figure 1 , Figures 5 to 7 The trolley 5 includes support rods 51, crossbeams 52, a body 53, a support frame 54, and limiting rods 55. Multiple support rods 51 are arranged in parallel. The ends of the support rods 51 are fixed to longitudinal plates 542 on the support frame 54. The support rods 51 are arranged parallel to the support frame 54. The longitudinal plates 542 can be used to mount and fix the support rods 51. When circuit boards are placed on the support rods 51, one side of each stack of circuit boards can abut against the longitudinal plate 542. This prevents the circuit boards from sliding backward during the movement of the trolley 5. The front end of the top of the body 53 ( Figure 1 A hinge rod 531 is installed at the right end of the top of the trolley body 53, and one end of the support frame 54 ( Figure 1 The right end of the middle support frame 54 is hinged to the hinge rod 531, and the other end of the support frame 54 ( Figure 1A snap-fit ​​block 541 is installed on the left end of the central support frame 54. The end of the limiting rod 55 is hinged to the vehicle body 53. A snap-fit ​​step 551 is formed on the limiting rod 55. The bottom of the snap-fit ​​block 541 can press against the snap-fit ​​step 551. The crossbeam 52 is set at the front end of the vehicle body 53. Figure 1 (Right end of the car body 53), the crossbeam 52 is integrally formed with the car body 53. When the trolley 5 is correctly pushed in, the crossbeam 52 is pushed between the two mounting plates 8. The two ends of the crossbeam 52 can respectively abut against the two detection components 3 and trigger the two detection components 3. The bottom height of the bearing roller 51 is higher than the top height of the roller 11. Figure 1 As shown), when the crossbeam 52 at the front end of the trolley 5 is pushed between the two mounting plates 8, the bearing roller 51 on the trolley 5 is pushed above the roller 11 of the conveying device 1, and the bearing roller 51 and the roller 11 are staggered in the longitudinal direction. The distance between two adjacent bearing rollers 51 is greater than the diameter of the roller 11, ensuring that the roller 11 can move upward from the gap between two adjacent bearing rollers 51 and support the circuit board on the bearing roller 51; before the trolley 5 moves the circuit board, it rotates the limiting rod 55 to separate the locking step 551 on the limiting rod 55 from the locking block 541 on the bearing frame 54. Since one end of the bearing frame 54 is hinged to the hinge rod 531, the other end of the bearing frame 54 ( Figure 1 The left end of the central support frame 54 will move downwards and rest against the top of the vehicle body 53, at which point the support frame 54 will be in an inclined state. Figure 7 As shown in the diagram, the support rod 51 on the support frame 54 is also tilted. Figure 7 As shown in the diagram, the bearing roller 51 is in a state where the front end is higher than the rear end. Figure 7 The right end of the middle support roller 51 is higher than the left end, ensuring that the stacks of circuit boards placed on the support roller 51 will not slide forward during transportation. When the operator pushes the trolley 5 between the left side frame 602 and the right side frame 603 of the U-shaped bracket 6 and the support roller 51 is above the roller 11 of the conveying device 1, one end of the locking block 541 of the support frame 54 is lifted upward, and the limiting rod 55 is rotated so that the bottom of the locking block 541 on the support frame 54 presses against the locking step 551 on the limiting rod 55. Figure 1 (as shown in the diagram), at this time the support frame 54 and the support rod 51 on the support frame 54 are in a horizontal state. Figure 1 (As shown in the diagram) This is to prepare for the roller 11 of the conveying device 1 to move upward from the gap between two adjacent support rollers 51. If the support rollers 51 are tilted, during the process of the roller 11 moving upward from the gap between two adjacent support rollers 51 to support the circuit board, one or more circuit boards at the top of each stack of circuit boards on the support rollers 51 may slip off, causing the circuit boards to collide and become defective. Therefore, before the roller 11 of the conveying device 1 moves upward from the gap between two adjacent support rollers 51, it must be ensured that the support rollers 51 are in a horizontal state.

[0056] See Figure 7 The bottom of the snap-fit ​​block 541 is sloping (lower on the left and higher on the right), and the snap-fit ​​steps 551 are arranged at an angle (lower on the left and higher on the right). The bottom of the sloping snap-fit ​​block 541 cooperates with the angled snap-fit ​​steps 551 to ensure that the snap-fit ​​block 541 and the snap-fit ​​steps 551 will not easily separate when the support frame 54 and the support rod 51 are in a horizontal state.

[0057] See Figure 6 The longitudinal section of the L-shaped limiting rod 101 is fixed on the support frame 54, and the transverse section of the L-shaped limiting rod 101 can hook the vehicle body 53 upward. When the operator pushes the trolley 5 between the left frame 602 and the right frame 603 of the U-shaped bracket 6 and the support roller 51 is above the roller 11 of the conveying device 1, during the process of lifting one end of the mounting locking block 541 of the support frame 54 upward, the transverse section of the L-shaped limiting rod 101 can limit the height of the support frame 54 to prevent the circuit board on the support roller 51 from slipping due to excessive height of the support frame 54 to lift upward. Moreover, since the bottom of the locking block 541 is sloping and the locking steps 554 are arranged at an angle, when the limiting rod 55 is rotated, the locking steps 551 on the limiting rod 55 can easily rotate to the bottom of the locking block 541 on the support frame 54.

[0058] See Figure 6 A handle 56 is installed on the support frame 54. After rotating the limit rod 55 to separate the locking step 551 on the limit rod 55 from the locking block 541 on the support frame 54, the operator can easily lift one end of the support frame 54 upwards through the handle 56. The trolley 5 can also be easily pushed through the handle 56.

[0059] The bottom of the trolley 5 is equipped with casters 501 with brakes; for details, please refer to [link / reference]. Figures 5 to 7 The four corners of the bottom of the cart body 53 are equipped with casters 501 with brakes. The cart 5 can be moved very easily by the casters 501. When the cart 5 is pushed to the desired position, the casters 501 with brakes can be locked to prevent the cart 5 from moving at will.

[0060] A controller (microcontroller or CPU) can be installed on the U-shaped bracket 6. The drive motor 12, drive device 2, detection component 3, and rotary telescopic cylinder 41 are connected to the controller through a wiring harness. When the detection component 3 is triggered, the switch signal generated can be sent to the controller. The working mode of the motor 12, drive device 2, and rotary telescopic cylinder 41 can be preset by the controller. The controller can control the drive motor 12, drive device 2, and rotary telescopic cylinder 41 to work together.

[0061] See Figures 2 to 4The bottom of the U-shaped bracket 6 is equipped with a support foot 61. The support foot 61 may include a support plate and an adjusting screw. The bottom of the adjusting screw is fixed on the support plate, and the top of the adjusting screw is screwed into the bottom of the U-shaped bracket 6. The bottom of the left frame 602 is equipped with one support foot 61, the bottom of the connecting frame 601 is equipped with two support feet 61, and the bottom of the right frame 603 is equipped with one support foot 61. According to the height of the carrying roller 51 on the trolley 5, the height of the roller 11 can be adjusted by the support foot 61, thereby ensuring that when the trolley 5 is pushed towards the conveying device 1, the carrying roller 51 on the trolley 5 can be positioned above the roller 11.

[0062] See Figures 1 to 8 In this utility model, the system for transferring circuit boards involves rotating the limiting rod 55 before the trolley 5 transports the circuit boards. This causes the locking step 551 on the limiting rod 55 to separate from the locking block 541 on the support frame 54, resulting in the support roller 51 on the support frame 54 being tilted. Figure 7 (As shown in the diagram), multiple stacks of circuit boards to be tested are placed on the support roller 51, with one side of each stack of circuit boards resting against the longitudinal plate 542. The operator pushes the trolley 5 along... Figure 8The trolley 5 is pushed in the F direction between the left side frame 602 and the right side frame 603 of the U-shaped bracket 6. The bearing roller 51 is located above the roller 11 of the conveying device 1. As the trolley 5 continues to be pushed in, under the guidance of the two guide plates 81, the crossbeam 52 at the front end of the trolley 5 is pushed between the two mounting plates 8. The two ends of the crossbeam 52 simultaneously abut against the two detection components 3. The two detection components 3 are triggered simultaneously. When the two detection components 3 are triggered simultaneously, the drive rod of the rotary telescopic cylinder 41 drives the locking rod 42 to rotate at a certain angle. Then the drive rod of the rotary telescopic cylinder 41 retracts, and the locking rod 42 snaps outward onto the crossbeam 52 at the front end of the trolley 5 to complete the fixation of the trolley 5. At the same time, the caster 501 can be locked to further prevent the trolley 5 from moving. At this point, the operator lifts one end of the locking block 541 on the support frame 54 upwards and rotates the limiting rod 55 so that the bottom of the locking block 541 on the support frame 54 presses against the locking step 551 on the limiting rod 55, ensuring that the support roller 51 is horizontal at this time, preparing for the roller 11 to move upwards from the gap between two adjacent support rollers 51. Then, under the action of the drive device 2, the roller 11 moves upwards. Since the support rollers 51 and the roller 11 are staggered in the longitudinal direction and the distance between two adjacent support rollers 51 is greater than the diameter of the roller 11, the roller 11 will move upwards from the gap between two adjacent support rollers 51 and support the circuit board on the support roller 51. As the roller 11 continues to move upwards, the multiple stacks of circuit boards on the support rollers 51 are transferred to the roller. When the bottom of roller 11 is higher than the top of support roller 51, under the action of drive motor 12, the rotating roller 11 can transport the circuit board to be tested to the loading area of ​​the circuit board testing machine. Then, the drive rod of the rotating telescopic cylinder 41 extends and drives the locking rod 42 to rotate in the opposite direction by a certain angle. At this time, the trolley 5 can be pulled out from between the left side frame 602 and the right side frame 603 of the U-shaped bracket 6. When all the circuit boards on roller 11 are transported to the loading area of ​​the circuit board testing machine (the working time of drive motor 12 can be set to T, after drive motor 12 has worked for time T, all the circuit boards on roller 11 can be transported to the loading area of ​​the circuit board testing machine), drive device 2 drives roller 11 to... The trolley 5 moves downward to prepare for the next transfer of the circuit board to be tested. If the two detection components 3 are not triggered simultaneously during the pushing process, it means that the trolley 5 is pushed in at an angle. When the trolley 5 is pushed in at an angle, the roller 11 of the conveyor device 1 cannot move upward from the gap between the two adjacent bearing rollers 51. The roller 11 and the bearing roller 51 will interfere. The setting of the two detection components 3 can ensure that the locking component 4 will lock the crossbeam 52 at the front end of the trolley 5 after the trolley 5 is pushed in correctly. In addition, the operator can adjust the height of the conveyor device 1 by using the support leg 61 according to the height of the bearing roller 51 on the trolley 5, thereby adjusting the height of the roller 11 to ensure that the bearing roller 51 on the trolley 5 can be above the roller 11 when the trolley 5 is pushed towards the conveyor device 1.This utility model discloses a system for transferring circuit boards. Throughout the entire process of transferring circuit boards from trolley 5 to the loading area of ​​the circuit board testing machine, no manual handling is required. This avoids bumps and damage to the circuit boards during manual transfer, ensuring their quality, while also reducing the labor intensity of operators and improving the transfer efficiency. Consequently, it effectively enhances the overall testing efficiency of the circuit boards.

[0063] The above descriptions are merely some embodiments of this utility model, intended to illustrate the technical means of this utility model, and are not intended to limit the technical scope of this utility model. Any obvious improvements made to this utility model by those skilled in the art in conjunction with existing common knowledge fall within the protection scope of this utility model.

Claims

1. A system for transferring circuit boards, characterized in that, include: A conveying device, comprising a plurality of parallel and rotatable rollers; A driving device is used to drive the conveying device to move up and down. A detection component is located below the conveying device; A locking component is provided below the conveying device; The trolley has multiple parallel-arranged support rollers. These rollers are positioned above the conveying device and are staggered longitudinally from the rollers. The distance between two adjacent rollers is greater than the diameter of the rollers. The bottom of the trolley is equipped with casters with brakes. When the support roller on the trolley is pushed above the conveying device, the front end of the trolley can abut against the detection component and trigger the detection component. When the detection component is triggered, the locking component can lock the front end of the cart to secure the cart. and The support legs are adjustable to adjust the height of the conveying device.

2. The system according to claim 1, characterized in that, It also includes a U-shaped support with an open side, on which the conveying device slides. The detection components are two contact switches mounted on the U-shaped support. A crossbeam is located at the front of the trolley, with both ends of the crossbeam abutting against the two detection components. A locking component is located on the U-shaped support between the two detection components. Support legs are located at the bottom of the U-shaped support. When both detection components are triggered simultaneously, the locking component locks the crossbeam at the front of the trolley to secure the trolley.

3. The system according to claim 2, characterized in that, The locking component includes a rotary telescopic cylinder and a locking rod. The rotary telescopic cylinder can drive the locking rod to rotate and move horizontally. When both ends of the crossbeam can abut against the two detection components respectively, the rotary telescopic cylinder drives the locking rod to rotate and move horizontally so that the locking rod is hooked outward onto the crossbeam.

4. The system according to claim 3, characterized in that, It also includes a switch, which is mounted on a U-shaped bracket and is electrically connected to the rotary telescopic cylinder.

5. The system according to claim 2, characterized in that, It also includes two mounting plates, the outer ends of which are mounted on U-shaped brackets. The two mounting plates are arranged longitudinally, and the two detection components are located between the two mounting plates. The inner ends of the mounting plates are provided with guide plates, which are arranged at an obtuse angle to the mounting plates.

6. The system according to claim 5, characterized in that, The distance between the two mounting plates is greater than the length of the crossbeam.

7. The system according to claim 2, characterized in that, It also includes a support plate and guide columns. The driving device is a motor. The conveying device is located on the top of the support plate. The guide columns are located on a U-shaped bracket and arranged longitudinally. The bottom of the support plate slides on the guide columns. The driving device drives the support plate to move up and down.

8. The system according to any one of claims 1 to 7, characterized in that, The trolley includes a body, a support frame, and a limiting rod. A hinge rod is provided at the front end of the top of the body. One end of the support frame is hinged to the hinge rod, and a locking block is provided at the other end of the support frame. The end of the limiting rod is hinged to the body, and a locking step is provided on the limiting rod. The bottom of the locking block can press against the locking step. The support rod is provided on the support frame.

9. The system according to claim 8, characterized in that, The bottom of the snap-fit ​​block is sloping, and the snap-fit ​​steps are arranged at an angle.

10. The system according to claim 8, characterized in that, It also includes an L-shaped limiting rod, the longitudinal section of which is located on the other end of the support frame, and the transverse section of which can hook upwards onto the vehicle body.

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