PCB board station transfer device and flying probe testing machine

Abstract

The application relates to a PCB station transfer device which comprises a rack provided with a feeding area, a working area and a discharging area; an amplitude adjusting seat slidably arranged on the rack, a plurality of amplitude adjusting seats being divided into an upper connecting group and a lower connecting group; an amplitude adjusting pulley rotatably arranged on the rack; an amplitude adjusting belt sleeved on the amplitude adjusting pulley, one side of the amplitude adjusting belt being connected with the upper connecting group and the other side being connected with the lower connecting group; an amplitude adjusting motor connected with the amplitude adjusting pulley; a clamping plate assembly arranged in the working area, two clamping plate assemblies being respectively connected with the upper connecting area and the lower connecting group; two vertical plate limiting seats connected with one clamping plate assembly, one being located in the feeding area and the other being located in the discharging area, the vertical plate limiting seat being provided with a plate channel groove in communication with a clamping gap of the clamping plate assembly; and a plate feeding assembly arranged on the rack. The application has the effects that when the automatic feeding and discharging are performed, different width circuit boards can be matched, and the clamping stability of the circuit boards can be maintained.

Description

Technical Field

[0001] This application relates to the technical field of circuit board testing, and in particular to a PCB board station transfer device and a flying probe tester. Background Technology

[0002] Flying probe testers are used to test circuit boards and are divided into two main categories: one is for testing PCBs and the other is for testing PCBAs. Specifically, flying probe testers for testing PCBs are instruments designed for PCBs with high component density, many layers, high wiring density, and small test point distances. They mainly test the insulation and continuity of the circuit board.

[0003] In related technologies, flying probe testing machines are generally divided into PCB board station transfer devices and probe motion detection devices. For example, the utility model with publication number CN206531927U and the name "Flying Probe Testing Machine" discloses a flying probe testing machine, including a substrate, a clamping mechanism, and a conveying mechanism. The substrate is used to place the circuit board, the clamping mechanism is set on the substrate, and the clamping mechanism is used to clamp the circuit board on the substrate. The conveying mechanism is used to drive the circuit board forward along the length direction of the substrate. The substrate also includes a first partition and a second partition. The flying probe testing machine also includes a base and an adjustment mechanism. The adjustment mechanism is set on the base. The first partition and the second partition are slidably connected to the slide block. The adjustment mechanism is used to drive the first partition and the second partition to slide relative to the base, so as to change the entry position of the circuit board into the equipment between the first partition and the second partition. In summary, the substrate, clamping mechanism, conveying mechanism, base, and adjustment mechanism form a PCB board station transfer device.

[0004] The disadvantages of the above technology are as follows: First, the entire device is horizontally set up, so on the one hand, it is not convenient to carry out the installation and removal work on the underside of the circuit board. On the other hand, it is also necessary to rely on the adsorption mechanism to keep the circuit board flat in a horizontal state, so it is not convenient to perform double-sided testing. Second, it is also impossible to adapt and adjust according to the size of the circuit board.

[0005] For example, the utility model disclosed in CN203054123U, entitled "A Vertical Flying Probe Tester," discloses a vertical flying probe tester, including a frame, an X-axis, a Y-axis, a Z-axis, and a PCB board fixing device. The frame consists of two bases, a bed, and a frame. The bed is fixed to the two bases with bolts, and the frame is installed on the bed. The X-axis, Y-axis, Z-axis, and PCB board fixing device are all installed inside the frame. The PCB board fixing device includes an upper clamp, a lower clamp, upper and lower feed shafts, a belt, and pulleys. The lower clamp is fixed to the bottom of the frame, and the upper clamp is slidably connected to two guide rails set on the frame. The upper and lower feed shafts are set at the top of the frame, and the pulleys are set at both ends of the upper and lower feed shafts and at the bottom of the frame. The belt is sleeved between the pulleys at both ends of the upper and lower feed shafts and the pulleys at the bottom of the frame. The two ends of the upper clamp are also fixed to the belt on the same side, so that it can slide on the guide rails through the drive of the belt, thereby allowing the equipment to handle circuit boards of different sizes.

[0006] The above-mentioned technology has several disadvantages. First, the loading and unloading of the entire equipment still requires manual operation. Second, the equipment adapts to circuit boards of different sizes by moving the upper clamp. The movement of the upper clamp is achieved by the drive of the belt. Therefore, due to the weight of the upper clamp, the actual position of the upper clamp is lower than the predetermined position. As a result, when the upper clamp holds the circuit board, the circuit board does not completely fill the clamping depth of the upper clamp. At the same time, because the circuit board is large in size, there is a disadvantage of unstable circuit board clamping. Summary of the Invention

[0007] In order to achieve automatic loading and unloading in a vertical flying probe tester, adapt to circuit boards of different sizes, and maintain the clamping stability of the circuit boards, this application provides a PCB board station transfer device and a flying probe tester.

[0008] Firstly, this application provides a PCB board station transfer device, which adopts the following technical solution: A PCB board transfer device includes: The frame is equipped with a loading area, a working area, and a unloading area; An amplitude adjustment base is slidably mounted on the frame, and the plurality of amplitude adjustment bases are divided into an upper connecting group and a lower connecting group; An amplitude-adjusting pulley is rotatably mounted on the frame. An amplitude-adjusting belt is fitted onto the amplitude-adjusting pulley, with one side of the amplitude-adjusting belt connected to the upper connecting group and the other side connected to the lower connecting group; An amplitude modulation motor is mounted on the frame and connected to the amplitude modulation pulley; A clamping plate assembly is disposed in the working area, and two clamping plate assemblies are respectively connected to the upper connecting area and the lower connecting group; Vertical plate limiting seats, two of the vertical plate limiting seats are connected to one of the clamping plate assemblies, one is located in the loading area and the other is located in the unloading area, and the vertical plate limiting seats are provided with a plate channel groove that communicates with the clamping gap of the clamping plate assembly; The plate feeding assembly is mounted on the frame.

[0009] By adopting the above technical solution, on the one hand, when adjustments are needed based on the size of the circuit board, the amplitude-adjusting motor can drive the amplitude-adjusting pulley to rotate. During this process, the amplitude-adjusting belt will move the upper and lower connecting groups closer or further apart, thereby allowing the two clamping plate assemblies and the upper and lower vertical plate limiting seats to accommodate circuit boards of different sizes. Simultaneously, since the two sides of the amplitude-adjusting belt are connected to the upper and lower connecting groups respectively, the tension exerted on the amplitude-adjusting belt by the weight of the upper and lower connecting groups can be offset. Therefore, the error between the actual position and the predetermined position of the upper and lower connecting groups can be minimized. Therefore, the circuit board can fill more of the clamping gap of the clamping plate assembly, thereby improving the clamping stability of the circuit board. On the other hand, when the circuit board needs to be processed, the robot first uses a robot arm to insert the vertical circuit board into the board channel groove in the loading area, and then the board feeding assembly sends the circuit board into the working area for processing. After the processing of the circuit board is completed, the board feeding assembly sends it into the unloading area, and finally the robot arm moves the vertical circuit board out of the coarse board channel groove in the unloading area. Thus, this device can cooperate with other devices to realize the automatic loading and unloading of circuit boards.

[0010] Preferably, the clamping plate assembly is connected to an amplitude adjustment follower seat, which is slidably connected to the frame. The amplitude adjustment follower seat is provided with a series groove. A series block and a flexible contact block are connected between the amplitude adjustment follower seat and the amplitude adjustment seat. One end of the series block is connected to the amplitude adjustment seat, and the other end passes through the groove of the series groove. The flexible contact block is connected to the end of the series block away from the amplitude adjustment seat, and multiple flexible contact blocks abut against the upper or lower sidewall of the series groove, respectively.

[0011] By adopting the above technical solution, compared with the direct rigid connection or integral molding of the amplitude modulation follower seat and the amplitude modulation seat, this design, due to the cooperation between the flexible contact block and the connecting groove, can weaken the transmission of vibration in the path from the frame to the amplitude modulation follower seat, thereby reducing the impact of external vibration on the clamping plate assembly. This can maintain the posture stability of the circuit board during the working process by cutting off the vibration transmitted from the outside to the inside, thus helping to reduce the error rate of the working process.

[0012] Preferably, an amplitude-adjusting follower pulley and an amplitude-adjusting follower belt are connected between the amplitude-adjusting follower seat and the frame. The amplitude-adjusting follower pulley is rotatably mounted on the frame. The amplitude-adjusting follower belt is sleeved on the amplitude-adjusting follower pulley. One side of the amplitude-adjusting follower belt is connected to an amplitude-adjusting follower seat on one of the clamping plate assemblies, and the other side is connected to an amplitude-adjusting follower seat on another clamping plate assembly. The frame is provided with a following synchronous shaft and a rotating shaft brake. The following synchronous shaft is rotatably mounted on the frame and is connected to the amplitude-adjusting follower pulley. The rotating shaft brake is connected to the following synchronous shaft.

[0013] By adopting the above technical solution, on the one hand, the friction force experienced by the amplitude-adjusting motor, amplitude-adjusting pulley, and amplitude-adjusting belt when driving the two clamping plate assemblies can be increased through the cooperation between the amplitude-adjusting follower pulley and the amplitude-adjusting follower belt. As a result, after the amplitude-adjusting motor stops, the two clamping plate assemblies can return to a stationary state more quickly, thereby improving the position adjustment accuracy of the clamping plate assemblies. On the other hand, since the external working device also applies force to the circuit board during the working process, the setting of the follower synchronous shaft and the brake can prevent the vibration generated by the external working device on the circuit board from affecting the clamping plate assemblies by locking the follower synchronous shaft. This can maintain the posture stability of the circuit board during the working process by cutting off the transmission of vibration from the inside to the outside.

[0014] Preferably, the clamping plate assembly includes a clamping base plate, a clamping plate, and a clamping drive component. The clamping base plate is fixedly connected to the vertical plate limiting seat; the clamping plate is slidably connected to the clamping base plate; and the clamping drive component is connected to the clamping plate to move the clamping plate closer to or further away from the clamping base plate.

[0015] By adopting the above technical solution, compared to the clamping method where two clamping plates move closer or further apart to achieve clamping, this design has two advantages. First, because the clamping base plate is fixed, one sidewall of the board channel groove can be used as a reference, allowing the circuit board to pass more smoothly between the board channel groove and the clamping gap of the clamping assembly. Second, if it is necessary to process circuit boards of different thicknesses, only the displacement of the clamping plate needs to be changed to achieve clamping of circuit boards of different thicknesses. Since the position of the clamping base plate is fixed, even if the thickness of the circuit board is different, the software system can still establish a reference system corresponding to different thicknesses based on the clamping base plate, and the error between different reference systems will be very small. Thus, the equipment can process circuit boards of different thicknesses while maintaining the clamping and positioning accuracy of circuit boards of different thicknesses.

[0016] Preferably, the frame is provided with side clamps and side clamp shifting drives in the working area near the loading area and the unloading area. The side clamps are connected to the frame through the side clamp shifting drives, and the side clamp shifting drives are used to allow the clamping gap of the side clamps to enter or leave the workpiece. The side clamps near the loading area are also connected to side clamp amplitude adjustment drives, which are used to move the side clamps near the loading area toward the unloading area.

[0017] By adopting the above technical solution, on the one hand, because the circuit board has a large area, the part of the circuit board located between the two clamping plate assemblies is prone to bending. Therefore, the side clamps and the side clamp displacement drive can achieve the flatness of the circuit board during operation by clamping it without affecting the passage of the circuit board between the loading area, the working area and the unloading area. On the other hand, when the circuit board has different sizes, when the circuit board enters the working area, the end of the circuit board with different sizes near the unloading area can be moved to a predetermined position, that is, the position of the side clamp near the unloading area. Then, the side clamp amplitude adjustment drive can be used to move the side clamp near the loading area towards the unloading area, so that the side clamp can be adapted to circuit boards of different horizontal sizes.

[0018] Preferably, the side clip includes: The side clamp base is connected to the side clamp displacement drive component; Two base spindles are arranged parallel to each other and spaced apart on the side clamp base. The sliding mandrel is slidably mounted on the side clamp base; A tensioning and closing drive component is disposed on the side clamp base, and the tensioning and closing drive component is connected to the sliding mandrel; A secondary pressure seat is rotatably mounted on one of the base spindles. The secondary pressure seat is divided into a secondary drive arm and a secondary clamping arm. The secondary drive arm is provided with an opening and closing fitting hole, through which the sliding spindle is allowed to move and slide relative to the opening and closing fitting hole and move closer to or away from the base spindle. The secondary clamping arm is used to abut against the workpiece, and the abutting surface is on the same plane as the surface of the clamping base plate near the clamping plate. The main pressure seat is rotatably mounted on another base spindle. The main pressure seat is divided into a main opening drive arm, a main closing drive arm, and a main clamping arm. The main opening drive arm abuts against the sliding spindle, and a closing elastic element is connected between the main closing drive arm and the side clamping base.

[0019] By adopting the above technical solution, when using the side clamp, the sliding mandrel is first moved towards the auxiliary clamping arm and the main clamping arm by the opening and closing drive component. During this process, the auxiliary drive arm will rotate and slide relative to the sliding mandrel through the opening and closing mating hole, so that the rotation of the auxiliary pressure seat and the sliding of the sliding mandrel are compatible. Therefore, the sliding of the sliding mandrel can be converted into the rotation of the auxiliary pressure seat. The opening drive arm abuts against the sliding mandrel, so that the rotation of the main pressure seat and the sliding of the sliding mandrel are compatible. Therefore, the sliding of the sliding mandrel can also be converted into the rotation of the main pressure seat. Then, under the action of the side clamp shifting drive component and the side clamp amplitude adjustment drive component, the circuit board is allowed to enter the gap after the auxiliary pressure seat and the main pressure seat are opened, and then... The opening and closing drive unit moves the sliding mandrel away from the auxiliary clamping arm and the main clamping arm. During this process, the auxiliary pressure seat will directly return to its initial state and abut against the circuit board under the drive of the sliding mandrel. At the same time, the abutting surface and the surface of the clamping plate near the clamping plate are on the same plane. The main pressure seat will rotate to reset under the action of the closing elastic element until the main clamping arm abuts against the circuit board. At this time, due to the different thickness of the circuit board, there may be situations where the opening and closing drive arm abuts against the sliding mandrel or not. Therefore, the clamping reference system formed by the side clamp and clamping plate assembly when adapting to circuit boards of different thicknesses is consistent, so as to maintain the clamping and positioning accuracy of the circuit board while adapting to circuit boards of different thicknesses.

[0020] Preferably, one of the plate feeding assemblies is connected to one of the clamping plate assemblies and two of the vertical plate limiting seats, and the plate feeding assembly includes: The plate conveying pulleys are divided into three groups. The plate conveying pulleys are rotatably connected to the vertical plate limiting seat, or are rotatably mounted on the vertical plate limiting seat and the clamping plate assembly respectively. The conveyor belts are respectively fitted on three sets of conveyor pulleys. The interval between two adjacent conveyor belts is close to the boundary between the working area and the loading area or the unloading area. The conveyor belts are located in the plate channel groove and the clamping gap of the clamping plate assembly. Support blocks, a plurality of support blocks are respectively connected to the vertical plate limiting seat and the clamping plate, the support blocks are connected to the side of the conveyor belt for abutting against the workpiece, and the support blocks abut against the inner side of the conveyor belt; The series pulleys are divided into two groups, with each group of series pulleys located between two adjacent groups of conveyor belt pulleys. Each group of series pulleys is connected to a different group of conveyor belt pulleys. A series belt is fitted onto the series pulley; A drive pulley is disposed in a group of the series pulleys, and the drive pulley is fitted onto the series belt; A plate feeding motor is connected to the drive pulley; Tensioning seats, a plurality of tensioning seats are slidably disposed on the vertical plate limiting seat and the clamping plate, and each tensioning seat is rotatably connected to a tension adjusting wheel, which abuts against the conveyor belt or the series belt.

[0021] By adopting the above technical solution, firstly, when the board feeding motor starts, the belt drive mechanism formed by the series pulley, series belt, board conveying pulley, and board conveying belt can be activated. The movement of the board conveying belt on one side drives the circuit board forward, thus achieving circuit board transportation while integrating the board feeding assembly onto the vertical plate limit seat and clamping plate assembly, thereby simplifying the overall structure of the device. Secondly, because the movement path of the circuit board between the loading area, working area, and unloading area is very long, the support block provides support to the side of the board conveying belt that contacts the circuit board, maintaining the stability of the circuit board during transportation. Thirdly, since the operation of the three belt drive groups formed by the board conveying pulley and the board conveying belt is achieved through a single board feeding motor, but the movement path of the circuit board is long, the tension adjustment wheel can be moved by moving the tension seat to change the tension of the board conveying belt or series belt, maintaining the transmission synchronization between the three belt drive groups formed by the board conveying belt and the board conveying pulley, thus improving the stability of the circuit board during transportation.

[0022] Preferably, a limiting cylinder, a limiting connecting block, and a limiting stop are connected between the clamping plate assembly located below and the vertical plate limiting seat located in the unloading area. The limiting cylinder is connected to the clamping plate base, and a limiting notch is provided at the end of the piston rod of the limiting cylinder. The limiting connecting block is bolted to the piston rod of the limiting cylinder. The limiting connecting block is provided with a connecting groove for the piston rod of the limiting cylinder to be inserted. The connecting groove cooperates with the limiting notch to limit the relative rotation between the limiting connecting block and the piston rod of the limiting cylinder. The limiting stop is connected to the limiting connecting block to control the opening and closing of the clamping gap of the clamping plate assembly and the plate channel groove. The limiting stop is made of an alloy material with a hard oxide layer.

[0023] By adopting the above technical solution, firstly, the extension or retraction of the piston rod of the limiting cylinder can open or cut off the channel between the clamping gap of the clamping plate assembly and the plate channel groove by the limiting stop. Therefore, when the circuit board collides with the limiting stop, it indicates that the front end of the circuit board has reached the predetermined position, thus positioning the circuit board more accurately in the predetermined position. Secondly, compared with the method of not setting a connecting groove, which makes it inconvenient to use a wrench to clamp the limiting notch on the piston rod during disassembly, this design method, because the connecting groove on the limiting connecting block cooperates with the limiting notch, means that when the limiting connecting block and piston rod are disassembled by turning the bolt, the piston rod will not rotate, so there is no need to use a wrench for disassembly, thus achieving limited positioning in a confined space. The assembly and disassembly of the limit cylinder with other block components facilitates the adjustment of the limit switch installed on the limit cylinder. Thirdly, because the limit stop block needs to be insulated and frequently collides with the circuit board, while the limit connecting block only needs to connect to the limit cylinder, the limit stop block is made of an alloy material with a hard oxide layer, while the limit connecting block can be made of ordinary metal. Furthermore, the volume of the limit stop block is larger than that of the limit connecting block, so the manufacturing cost of the limit stop block is significantly higher than that of the limit connecting block. Therefore, compared to directly setting a connecting groove on the limit stop block, this design allows for the replacement of the limit connecting block only when the shape of the connecting groove cannot be adjusted, thus reducing the manufacturing cost of the limit components during maintenance.

[0024] Preferably, the frame includes a horizontal mounting base and a vertical mounting base. The horizontal mounting base is made of marble and two such bases are arranged in parallel and spaced apart. The vertical mounting base is made of metal and has a channel window for the workpiece to pass through. Two such vertical mounting bases are arranged in parallel and spaced apart. The two ends of the vertical mounting base are respectively bolted to the two horizontal mounting bases. An adhesive layer is provided between the two end faces of the vertical mounting base and the adjacent surfaces of the two horizontal mounting bases.

[0025] By adopting the above technical solution, if the entire vertical frame formed by the vertical horizontal mounting base and the vertical mounting base is made of marble, the structural strength of the entire vertical frame will be reduced due to the presence of passage windows. If the entire vertical frame formed by the vertical horizontal mounting base and the vertical mounting base is made of castings, it is difficult for the existing process to achieve the required shape accuracy of the vertical frame. Therefore, in this design, since the vertical mounting base is made of castings, it is easier to manufacture passage windows. Since the vertical mounting base is made of marble, it is only necessary to maintain the flatness accuracy of the two adjacent surfaces of the vertical horizontal mounting base. Thus, a simpler process can be used to produce a vertical frame with the required structural strength and higher shape accuracy. In addition, the adhesive layer can improve the stability of the vertical mounting base on the vertical horizontal mounting base when fastened with bolts.

[0026] Secondly, this application provides a flying probe testing machine, which adopts the following technical solution: A flying probe testing machine includes a PCB board station transfer device, an X-axis drive, a Y-axis drive, a probe base, a Z-axis linear motor, and a probe. The X-axis drive is connected to the frame; the Y-axis drive is connected to the X-axis drive; the probe base is connected to the Y-axis drive; the Z-axis linear motor is mounted on the probe base; the probe is slidably connected to the probe base and is connected to the output shaft of the Z-axis linear motor.

[0027] By adopting the above technical solution, on the one hand, the setting of the X-axis drive, Y-axis drive, probe base, Z-axis linear motor and probe enables flying probe testing of the circuit board in the working area; on the other hand, since the probe needs to be inserted into or pulled out of the circuit board repeatedly during the flying probe testing process, the setting of the Z-axis linear motor can make the reciprocating motion of the probe in the Z direction more accurate.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the frame, amplitude adjustment base, amplitude adjustment pulley, amplitude adjustment belt, amplitude adjustment motor, clamping plate assembly, vertical plate limit seat and feeding assembly, automatic loading and unloading can be achieved, which can not only adapt to circuit boards of different sizes, but also maintain the clamping stability of the circuit boards. 2. By using series blocks and flexible contact adhesive, the circuit board can maintain its posture stability during operation by cutting off the transmission of vibration from the outside to the inside, thereby helping to improve the error rate of operation. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the back of the PCB board station transfer device in the embodiments of this application.

[0030] Figure 2 This is a schematic diagram of the connection between the amplitude modulation seat and the amplitude modulation follower seat in an embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the structure of the rotating shaft brake in the embodiment of this application.

[0032] Figure 4 This is a structural schematic diagram of the clamping plate assembly located below and the limiting member provided thereon in the embodiments of this application.

[0033] Figure 5 This is a schematic diagram of the board feeding assembly in an embodiment of this application.

[0034] Figure 6 This is a front view of the PCB board station transfer device in the embodiments of this application.

[0035] Figure 7 This is a schematic diagram of the structure of the side clamp, the side clamp shifting drive, and the side clamp amplitude adjustment drive in the embodiments of this application.

[0036] Figure 8 This is a schematic diagram of the side clip structure in an embodiment of this application.

[0037] Figure 9 This is a structural schematic diagram of the rack portion in an embodiment of this application.

[0038] Figure 10 This is a schematic diagram of the testing mechanism installed on the PCB board station transfer device in the embodiments of this application.

[0039] Figure 11 This is a schematic diagram of the structure of the testing mechanism in the embodiments of this application.

[0040] Explanation of reference numerals in the attached figures: 1. Frame; 11. Loading area; 12. Working area; 13. Unloading area; 14. Following synchronous shaft; 15. Rotary shaft brake; 151. Auxiliary brake block; 152. Main brake block; 1521. Brake mating hole; 153. Brake cylinder; 1531. Connecting spindle; 154. Limit block; 16. Vertical horizontal mounting base; 17. Vertical vertical mounting base; 171. Channel window; 2. Amplitude adjustment base; 21. Amplitude adjustment pulley; 22. Amplitude adjustment belt; 23. Amplitude adjustment motor; 3. Clamping plate assembly; 31. Clamping base plate; 32. Clamping plate; 33. Clamping cylinder; 34. Sliding plate; 341. Push plate guide hole; 35. Push plate guide wheel; 4. Vertical plate limiting seat; 41. Plate channel groove; 42. Limiting cylinder; 421. Limiting notch; 43. Limiting connecting block; 431. Connecting groove; 44. Limiting stop block; 5. Plate feeding assembly; 51. Plate conveying pulley; 52. Plate conveying belt; 53. Support block; 54. Connecting pulley; 55. Connecting belt; 56. Drive pulley; 57. Plate feeding motor; 58. Tensioning seat; 59. Tension adjusting wheel; 6. Amplitude-adjusting follower seat; 61. Connecting groove; 62. Connecting block; 63. Flexible contact block; 64. Amplitude-adjusting follower pulley; 65. Amplitude-adjusting follower belt; 7. Side clamp; 71. Side clamp base; 72. Base spindle; 73. Sliding spindle; 74. Opening and closing drive component; 75. Secondary pressure seat; 751. Secondary drive arm; 7511. Opening and closing mating hole; 752. Secondary clamping arm; 76. Main pressure seat; 761. Main opening drive arm; 762. Main closing drive arm; 763. Main clamping arm; 77. Closing elastic component; 8. Side clamp shifting drive; 81. Side clamp amplitude adjustment drive; 9. X-axis drive; 91. Y-axis drive; 92. Needle base; 93. Z-axis linear motor; 94. Probe. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0042] This application discloses a PCB board transfer device at a workstation. (Refer to...) Figure 1 The PCB board transfer device includes a frame 1, an amplitude adjustment seat 2, amplitude adjustment pulleys 21, amplitude adjustment belts 22, amplitude adjustment motors 23, clamping plate assemblies 3, vertical plate limiting seats 4, and board feeding assemblies 5. The frame 1 is formed in a horizontal direction with a loading area 11, a working area 12, and a unloading area 13. The amplitude adjustment seat 2 is slidably mounted on the frame 1 via guide rails. Multiple amplitude adjustment seats 2 are provided. Specifically, in this embodiment, four amplitude adjustment seats 2 are used as an example. The four amplitude adjustment seats 2 are divided into an upper connecting group and a lower connecting group in pairs. The amplitude adjustment seats 2 in the upper connecting group and the amplitude adjustment seats 2 in the lower connecting group can move closer to or further away from each other. The amplitude adjustment pulleys 21 are rotatably mounted on the frame 1. Four amplitude adjustment pulleys 21 are provided. Two amplitude adjustment pulleys 21 are located below the lower connecting group, and two amplitude adjustment pulleys 21 are located above the upper connecting group.

[0043] Reference Figure 1An amplitude-adjusting belt 22 is fitted onto an amplitude-adjusting pulley 21. There are two amplitude-adjusting belts 22. The upper end of each amplitude-adjusting belt 22 is fitted onto the amplitude-adjusting pulley 21 located above the upper connecting group, and the lower end is fitted onto the amplitude-adjusting pulley 21 located below the lower connecting group. Therefore, the two amplitude-adjusting belts 22 are arranged vertically parallel and spaced apart. At the same time, one side of each amplitude-adjusting belt 22 is connected to the amplitude-adjusting seat 2 of the upper connecting group, and the other side is connected to the amplitude-adjusting seat 2 of the lower connecting group. An amplitude-adjusting motor 23 is fixedly mounted on the frame 1. There is one amplitude-adjusting motor 23. The output shaft of the amplitude-adjusting motor 23 is connected to one amplitude-adjusting pulley 21 located below the lower connecting group. At the same time, the two amplitude-adjusting pulleys 21 located below the lower connecting group are also synchronously connected through a cylindrical rod. The upper connecting group and the lower connecting group move closer or further apart through the belt drive formed by the two amplitude-adjusting pulleys 21 and one amplitude-adjusting belt 22.

[0044] In other embodiments, regardless of whether the number of amplitude adjustment seats 2 is the same as in this embodiment, the number of amplitude adjustment pulleys 21, amplitude adjustment belts 22 and amplitude adjustment seats 2 can still be changed according to the aforementioned proportional relationship; or other proportional relationships between amplitude adjustment pulleys 21, amplitude adjustment belts 22 and amplitude adjustment seats 2 can be selected according to the actual installation situation.

[0045] Reference Figure 1 The clamping plate assembly 3 is disposed in the working area 12. Two clamping plate assemblies 3 are provided: one is connected to the amplitude adjustment seat 2 of the upper connecting group, and the other is connected to the amplitude adjustment seat 2 of the lower connecting group. Four vertical plate limiting seats 4 are provided, arranged in pairs. Each pair of vertical plate limiting seats 4 is connected to one clamping plate assembly 3. One vertical plate limiting seat 4 connected to each clamping plate assembly 3 is located in the loading area 11, and the other vertical plate limiting seat 4 is located in the unloading area 13. Therefore, in this embodiment, the vertical plate limiting seats 4 and the clamping plate assembly 3 are horizontally aligned. The span occupied upwards is the horizontal span of the loading area 11, the working area 12, and the unloading area 13. In addition, each vertical plate limiting seat 4 has a plate channel groove 41 with a through groove structure on its upper side. The plate channel groove 41 is for the circuit board to be embedded, and the plate channel groove 41 is connected to the clamping gap of the clamping plate assembly 3. Moreover, the width of the plate channel groove 41 away from the clamping plate assembly 3 is greater than the width close to the clamping plate assembly 3 to meet the requirements of convenient loading and accurate subsequent positioning. The board feeding assembly 5 is installed on the frame 1 to provide power for the movement of the circuit board.

[0046] Reference Figure 1In summary, on the one hand, when adjustments are needed based on the size of the circuit board, the amplitude-adjusting motor 23 can drive the amplitude-adjusting pulley 21 to rotate. During this process, the amplitude-adjusting belt 22 will cause the upper and lower connecting groups to move closer or further apart, thereby allowing different sizes of circuit boards to be accommodated between the two clamping plate assemblies 3 and between the upper and lower vertical plate limiting seats 4. Simultaneously, since the two sides of the amplitude-adjusting belt 22 are connected to the upper and lower connecting groups respectively, the tension exerted on the amplitude-adjusting belt 22 by the weight of the upper and lower connecting groups can be offset. Therefore, the error between the actual position and the predetermined position of the upper and lower connecting groups can be smaller, thus ensuring a smoother circuit board. It can fill more of the clamping gap of the clamping plate assembly 3, thereby improving the clamping stability of the circuit board. On the other hand, when the circuit board needs to be processed, the robot first uses a robot arm to insert the vertical circuit board into the board channel groove 41 at the loading area 11, and then the board is fed into the working area 12 by the board feeding assembly 5 for processing. After the processing of the circuit board is completed, it is fed into the unloading area 13 by the board feeding assembly 5. Finally, the robot arm removes the vertical circuit board from the board channel groove 41 of the unloading area 13. Thus, the device can cooperate with other devices to realize automatic loading and unloading of circuit boards.

[0047] Reference Figure 1 and Figure 2 To ensure the circuit board is more stable in the working area 12, the following configuration is provided: First, each clamping plate assembly 3 is connected to an amplitude adjustment follower seat 6 at both ends along its length. Each amplitude adjustment follower seat 6 is slidably connected to the frame 1 via a light rod guide rail. Each amplitude adjustment follower seat 6 cooperates with an amplitude adjustment seat 2. A series groove 61 is provided on the side of each amplitude adjustment follower seat 6. At the same time, a series block 62 and a flexible contact block 63 are connected between each amplitude adjustment follower seat 6 and each amplitude adjustment seat 2. There is one series block 62. One end of the series block 62 is fixedly connected to the amplitude adjustment seat 2 by bolts, and the other end extends into the slot of the series groove 61.

[0048] Reference Figure 1 and Figure 2 The flexible contact block 63 is fixedly connected to one end of the connecting block 62 located in the connecting groove 61. The material of the flexible contact block 63 includes, but is not limited to, rubber and silicone. There are two flexible contact blocks 63, which are located on the upper and lower sides of the connecting block 62, respectively. At the same time, the two flexible contact blocks 63 abut against the upper and lower side walls of the connecting groove 61, respectively. Therefore, the flexible contact block 63 can weaken the transmission of external vibrations to reduce the impact of external vibrations on the clamping plate assembly 3. This can maintain the stability of the circuit board during the working process by cutting off the vibration transmitted from the outside to the inside, thereby helping to reduce the error rate of the working process.

[0049] Reference Figure 1 and Figure 2 Secondly, each amplitude-adjusting follower seat 6 is connected to the frame 1 by an amplitude-adjusting follower pulley 64 and an amplitude-adjusting follower belt 65. There are multiple amplitude-adjusting follower pulleys 64, which are divided into two groups. One group of amplitude-adjusting follower pulleys 64 cooperates with two amplitude-adjusting follower seats 6 near the loading area 11, and the other group cooperates with two amplitude-adjusting follower seats 6 near the unloading area 13. At the same time, each amplitude-adjusting follower pulley 64 is rotatably mounted on the frame 1. There are two amplitude-adjusting follower belts 65, which are respectively sleeved on the two groups of amplitude-adjusting follower pulleys 64. At the same time, one side of each amplitude-adjusting follower belt 65 is fixedly connected to the upper amplitude-adjusting follower seat 6, and the other side is fixedly connected to the lower amplitude-adjusting follower seat 6.

[0050] Reference Figure 1 and Figure 3 The frame 1 is also equipped with a following synchronous shaft 14 and a rotating shaft brake 15. The following synchronous shaft 14 is cylindrical and rotates through the frame 1. The following synchronous shaft 14 is also connected to the amplitude-adjusting following pulley 64. Specifically, one following synchronous shaft 14 is connected to two amplitude-adjusting following pulleys 64. The two amplitude-adjusting following pulleys 64 are located near the upper connecting group. At the same time, each of the two amplitude-adjusting following pulleys 64 is one of two sets of amplitude-adjusting following pulleys 64. The rotating shaft brake 15 is connected to the part of the following synchronous shaft 14 that is exposed outside the two amplitude-adjusting following pulleys 64. Specifically, it includes a secondary brake block 151, a main brake block 152, a brake cylinder 153, and a limit block 154. One end of the secondary brake block 151 is hinged to the frame 1 through a pin. The secondary brake block 151 abuts against the outer wall of the following synchronous shaft 14.

[0051] Reference Figure 1 and Figure 3The main brake block 152 and the auxiliary brake block 151 are symmetrically arranged with respect to the following synchronous shaft 14. One end of the main brake block 152 is hinged to the frame 1 via a pin. The hinge position of the main brake block 152 and the hinge position of the auxiliary brake block 151 are symmetrically arranged with respect to the center line of the following synchronous shaft 14. In addition, the main brake block 152 is also provided with an oval-shaped brake mating hole 1521. The housing of the brake cylinder 153 is fixedly connected to the auxiliary brake block 151. The extension and retraction direction of the piston rod of the brake cylinder 153 is the same as the length of the brake mating hole 1521. There is an angle between the directions. The piston rod of the brake cylinder 153 is connected to a connecting spindle 1531, which passes through the brake engagement hole 1521. At the same time, the connecting spindle 1531 will slide and rotate relative to the brake engagement hole 1521, moving closer to or away from the hinge of the main brake block 152, so that the piston rod of the brake cylinder 153 can move to accommodate the rotation of the main brake block 152. The limiting block 154 is fixedly connected to the frame 1, and the limiting block 154 abuts against the side of the main brake block 152 away from the auxiliary brake block 151.

[0052] Reference Figure 1 and Figure 3 When the piston rod of the brake cylinder 153 extends, the main brake block 152 first abuts against the following synchronous shaft 14 under the action of the piston rod. Then, the auxiliary brake block 151 abuts against the following synchronous shaft 14 under the reaction action of the brake cylinder 153 housing, thereby locking the following synchronous shaft 14. By locking the following synchronous shaft 14, the vibration generated by the external working device on the circuit board will not affect the clamping plate assembly 3, thus maintaining the stability of the circuit board's posture during operation by cutting off the transmission of vibration from the inside to the outside. When the piston rod of the brake cylinder 153 retracts, the main brake block 152 first disengages from the following synchronous shaft 14 until the main brake block 152 abuts against the limit block 154. Then, the auxiliary brake block 151 disengages from the following synchronous shaft 14 under the reaction action of the brake cylinder 153 housing, thereby releasing the brake from the following synchronous shaft 14.

[0053] In other embodiments, the brake may be selected from other structural forms, but it must be selected to lock the following synchronous shaft 14 by applying frictional force, so as to achieve the purpose of quickly braking the following synchronous shaft 14.

[0054] Reference Figure 1 and Figure 4In this embodiment, each clamping plate assembly 3 includes a clamping base plate 31, a clamping plate 32, and a clamping drive component. Specifically, the clamping base plate 31 is fixedly connected to two vertical plate limiting seats 4; the clamping plate 32 is slidably connected to the clamping base plate 31, and the clamping plate 32 can move closer to or further away from the clamping base plate 31 to clamp or release the circuit board. The clamping base plate 31 also serves as a reference surface to clamp circuit boards of different thicknesses. The clamping drive component includes a plate clamping cylinder 33, a sliding pressure plate 34, and a push plate guide wheel 35. The plate clamping cylinder 33 is fixedly connected to the clamping base plate 31, and the piston rod of the plate clamping cylinder 33 extends and retracts in the following directions. The length direction of the clamping base plate 31 is as follows: the sliding pressure plate 34 is connected to the piston rod of the plate clamping cylinder 33, and the sliding pressure plate 34 is provided with a push plate guide hole 341. The push plate guide hole 341 is inclined and the center line of the push plate guide hole 341 is perpendicular to the horizontal plane; the push plate guide wheel 35 is coaxially rotatably connected to the clamping plate 32, and the push plate guide wheel 35 is also in the push plate guide hole 341. When the piston rod of the plate clamping cylinder 33 extends or retracts, the sliding pressure plate 34 will slide horizontally, so that the clamping plate 32 can move closer to or away from the clamping base plate 31 through the cooperation between the push plate guide wheel 35 and the push plate guide hole 341.

[0055] Reference Figure 1 and Figure 4 In this embodiment, when the circuit board size is different, in order to facilitate the positioning of the circuit board in the working area 12, the front end of the circuit board always moves to a predetermined position in the working area 12 near the unloading area 13. Therefore, a limiting component is used between the clamping plate assembly 3 located below and the vertical plate limiting seat 4 located in the unloading area 13. The limiting component specifically includes a limiting cylinder 42, a limiting connecting block 43, and a limiting stop block 44. The limiting cylinder 42 is fixedly installed on the clamping plate 31. Two limiting notches 421 are opened on the piston rod of the limiting cylinder 42. The two limiting notches 421 are connected to each other. The piston rod is symmetrically arranged along its centerline so that the end face of the piston rod is oval. The limiting connecting block 43 is made of ordinary alloy material. The limiting connecting block 43 is connected to the piston rod of the limiting cylinder 42 by bolts. At the same time, a through groove 431 is opened on one surface of the limiting connecting block 43 near the limiting cylinder 42. The connecting groove 431 is for the piston rod of the limiting cylinder 42 to be inserted. The two opposite side walls of the connecting groove 431 will respectively cooperate with two limiting notches 421 to limit the relative rotation between the piston rod and the limiting connecting block 43.

[0056] Reference Figure 1 and Figure 4The limiting block 44 is made of aluminum-magnesium alloy with a hard oxide layer, so it is both insulating and has high hardness to contact the circuit board. The limiting block 44 is also fixedly connected to the limiting connecting block 43 by bolts. When the piston rod of the limiting cylinder 42 extends or retracts, the limiting block 44 can control the opening and closing of the clamping gap between the clamping plate assembly 3 and the plate channel groove 41, thereby achieving the purpose of accurately positioning the circuit board to the predetermined position. In addition, the limiting cylinder 42 is usually also equipped with a limit switch. Since the limit cylinder 42 needs to be removed during equipment use to adjust the position of the limit switch, the piston rod will not rotate when the limit connecting block 43 and piston rod are disassembled by rotating the bolt. Therefore, it is not necessary to use a wrench for disassembly. This allows the limit cylinder 42 to be assembled and disassembled with other block components in a narrow space, which facilitates the adjustment of the limit switch on the limit cylinder 42.

[0057] In this embodiment, since the limiting block 44 needs to be insulated and frequently collides with the circuit board, while the limiting connecting block 43 only needs to be connected to the limiting cylinder 42, the limiting block 44 is made of an alloy material with a hard oxide layer, while the limiting connecting block 43 can be made of ordinary metal. Furthermore, the volume of the limiting block 44 is larger than that of the limiting connecting block 43, so the manufacturing cost of the limiting block 44 is significantly higher than that of the limiting connecting block 43. Therefore, compared to directly setting the connecting groove 431 on the limiting block 44, this design allows for easy replacement of the limiting connecting block 43 when the shape of the connecting groove 431 cannot be adjusted. This reduces the manufacturing cost of the components formed by the limiting cylinder 42, the limiting connecting block 43, and the limiting block 44 during maintenance. Therefore, in other embodiments, if the manufacturing cost between the limiting block 44 and the limiting connecting block 43 is relatively low, the limiting connecting block 43 can be omitted, and the connecting groove 431 can be directly set on the limiting block 44.

[0058] Reference Figure 1 and Figure 5In this embodiment, a plate feeding assembly 5 is connected to a clamping plate assembly 3 and two vertical plate limiting seats 4 at the same height. Specifically, each plate feeding assembly 5 includes a plate conveying pulley 51, a plate conveying belt 52, a support block 53, a series pulley 54, a series belt 55, a drive pulley 56, a plate feeding motor 57, and a tensioning seat 58. Multiple plate conveying pulleys 51 are provided, each rotatably mounted on the vertical plate limiting seat 4 or the clamping plate 31. The multiple plate conveying pulleys 51 are divided into three groups, which are roughly distributed in the loading area 11, the working area 12, and the... In the unloading area 13, the two ends of the area occupied by a set of conveyor belt pulleys 51 distributed in the working area 12 will respectively extend to the loading area 11 and the unloading area 13. In other embodiments, the conveyor belt pulleys 51 can also be rotatably mounted on the vertical plate limiting seat 4. There are three conveyor belts 52 in total, and the three conveyor belts 52 are respectively sleeved on the three sets of conveyor belt pulleys 51. At the same time, the conveyor belts 52 in the loading area 11 and the unloading area 13 will be exposed in the board channel groove 41. The conveyor belts 52 in the working area 12 will be in the clamping gap of the clamping plate assembly 3 to drive the circuit board forward.

[0059] Reference Figure 1 and Figure 5 Multiple support blocks 53 are provided, and the multiple support blocks 53 are respectively connected to the vertical plate limiting seat 4 and the clamping base plate 31. The support blocks 53 are connected to the side of the conveyor belt 52 that abuts against the circuit board. Specifically, the support blocks 53 abut against the inner side of the conveyor belt 52 to support the conveyor belt 52, thereby maintaining the transmission stability of the circuit board during long-distance movement between the loading area 11, the working area 12 and the unloading area 13. In this embodiment, the support blocks 53 can be fixedly connected in the shape of cuboid blocks. In other embodiments, the support blocks 53 can also be rotatably connected in the shape of rollers. In this case, it is only necessary to adjust the number of support blocks 53 accordingly to maintain support for different positions of the conveyor belt 52.

[0060] Reference Figure 1 and Figure 5 Multiple series pulleys 54 are provided, and the multiple series pulleys 54 are divided into two groups. Each group of series pulleys 54 is located between two adjacent groups of conveyor pulleys 51. In each group of series pulleys 54, at least one series pulley 54 is coaxially connected to one conveyor pulley 51 in one group, and the other series pulley 54 is coaxially connected to one conveyor pulley 51 in the other group. Two series belts 55 are provided, and the two series belts 55 are respectively sleeved on the two groups of series pulleys 54 to realize the purpose of connecting the two adjacent groups of conveyor pulleys 51 in series.

[0061] Reference Figure 1 and Figure 5The active pulley 56 is disposed in one of the series pulleys 54. Specifically, in this embodiment, since the circuit board in the working area 12 is closer to being in a vertical state, the active pulley 56 is disposed in one of the series pulleys 54 located at the junction of the working area 12 and the unloading area 13. Therefore, the active pulley 56 is rotatably disposed on the vertical plate limiting seat 4, and the active pulley 56 is sleeved by the series belt. The plate feeding motor 57 is fixedly installed on the vertical plate limiting seat 4 located in the unloading area 13. At the same time, the output shaft of the plate feeding motor 57 is connected to the active pulley 56, thereby realizing the synchronous movement of the two sets of series pulleys 54 and series belts 55, the three sets of plate conveying pulleys 51 and the plate conveying belt 52.

[0062] Reference Figure 1 and Figure 5 Multiple tension seats 58 are provided. The multiple tension seats 58 are slidably and securely installed on the vertical plate limiting seat 4 and the clamping plate 31 through their own waist-shaped holes and bolts. At the same time, each tension seat 58 is rotatably connected to a tension adjusting wheel 59. The tension adjusting wheel 59 abuts against the conveyor belt 52 or the series belt 55. By moving the tension seat 58, the tension adjusting wheel 59 can change the tension of the conveyor belt 52 or the series belt 55, thereby maintaining the transmission synchronization between the three belt drive groups formed by the conveyor belt 52 and the conveyor pulley 51, which helps to improve the transportation stability of the circuit board.

[0063] Reference Figure 6 and Figure 7 In this embodiment, because the circuit board has a large surface area, the middle part of the circuit board is prone to bending after being clamped by the clamping plate assembly 3 at the upper and lower ends. Therefore, the following configuration is provided: the frame 1 is provided with a side clamp 7 and a side clamp shifting drive 8 in the working area 12 near the unloading area 13 and the loading area 11. The side clamp 7 clamps the middle part of the front or rear end of the circuit board. At the same time, the side clamp 7 is slidably connected to the frame 1 through the side clamp shifting drive 8. Specifically, the side clamp shifting drive 8 is implemented by connecting two cylinders so that the side clamp 7 can move parallel to the movement path of the circuit board and perpendicular to the movement path of the circuit board. Thus, the movement of the side clamp 7 allows the circuit board to enter or leave the clamping gap of the side clamp 7, so as to achieve the flatness of the circuit board during the working process by clamping. In other embodiments, the side clamp shifting drive 8 can also be an XY two-axis slide table or other structural forms.

[0064] In this embodiment, when the circuit board is in the working area 12, the front end of the circuit board will move to the position of the limiting member. In order to adapt to circuit boards of different horizontal sizes, the side clamp 7 near the loading area 11 is also connected to the side clamp amplitude adjustment drive 81. The side clamp amplitude adjustment drive 81 is in the form of a guide rail slide. The side clamp amplitude adjustment drive 81 is connected to the side clamp displacement drive 8 and is used to make the side clamp 7 move in a large span path towards the unloading area 13. In other embodiments, if the movement span of the side clamp 7 is not large, the side clamp amplitude adjustment drive 81 can also be selected as a cylinder structure.

[0065] Reference Figure 6 and Figure 7 The side clamp 7 includes a side clamp base 71, a base spindle 72, a sliding spindle 73, a tensioning drive 74, a secondary pressure seat 75, and a main pressure seat 76. The side clamp base 71 is connected to the side clamp shifting drive 8 to serve as the mounting base for the entire side clamp 7. The base spindle 72 is cylindrical, and two base spindles 72 are provided, which are vertically spaced and fixedly installed on the side clamp base 71. The sliding spindle 73 is also cylindrical, and a structure is connected to the sliding spindle 73. The limiting ring is in the form of a bearing. The side clamp base 71 has a waist-shaped stepped hole so that the sliding spindle 73 can be slidably connected to the side clamp base 71. The sliding spindle 73 is located between two base spindles 72, and the direction of movement of the sliding spindle 73 is perpendicular to the line connecting the two base spindles 72. The opening and closing drive 74 is fixedly installed on the side clamp base 71. The opening and closing drive 74 is in the form of a cylinder. The piston rod of the opening and closing drive 74 is connected to the sliding spindle 73.

[0066] Reference Figure 7 and Figure 8 The auxiliary pressure seat 75 is rotatably mounted on a base spindle 72. The auxiliary pressure seat 75 is then divided into an auxiliary drive arm 751 and an auxiliary clamping arm 752. The auxiliary drive arm 751 has an oval-shaped opening and closing fitting hole 7511. When the side clamp 7 is closed, the length direction of the opening and closing fitting hole 7511 is parallel to the line connecting the two base spindles 72. The opening and closing fitting hole 7511 allows the sliding spindle 73 to pass through it. A bearing is fitted onto the portion of the sliding spindle 73 at the opening and closing fitting hole 7511. The opening and closing fitting hole 7511 is oval-shaped so that the sliding mandrel 73 can rotate and slide relative to the opening and closing fitting hole 7511, so that the rotation of the auxiliary pressure seat 75 and the sliding of the sliding mandrel 73 are compatible. The auxiliary clamping arm 752 is used to abut against the circuit board. At the same time, the abutting surface and the surface of the clamping base plate 31 near the clamping plate 32 are on the same plane. Therefore, the clamping reference system formed by the side clamp 7 and the clamping plate assembly 3 to adapt to circuit boards of different thicknesses is consistent, so as to improve the clamping and positioning accuracy of the circuit board.

[0067] Reference Figure 6 and Figure 8 The main pressure seat 76 is also rotatably mounted on another base spindle 72. The main pressure seat 76 is thus divided into an opening drive arm 761, a closing drive arm 762, and a clamping arm 763. The opening drive arm 761 abuts against the sliding spindle 73 to ensure that the sliding of the sliding spindle 73 is compatible with the rotation of the main pressure seat 76. A closing elastic element 77 made of a hook spring connects the main closing drive arm 762 and the side clamping base 71. The main clamping arm 763 abuts against the circuit board. When the piston rod of the opening and closing drive member 74 extends, the auxiliary clamping arm 752 and the main clamping arm 763 open to provide a clamping gap for the circuit board to enter. When the piston rod of the opening and closing drive member 74 retracts, the auxiliary pressure seat 752 will... Driven by the sliding mandrel 73, it directly returns to its initial state to abut against the circuit board. At the same time, the abutting surface and the clamping reference surface of the clamping plate assembly 3 are on the same plane. The main pressure seat 76 will rotate to reset under the action of the closing elastic element 77 until the main clamping arm 763 abuts against the circuit board. At this time, due to the different thickness of the circuit board, there may be a situation where the main opening drive arm 761 abuts against the sliding mandrel 73 or not. In summary, the surface of the auxiliary pressure seat 75 that abuts against the circuit board can be used as the clamping reference surface for circuit boards of different thicknesses. Therefore, the clamping reference system formed when the side clamp 7 is adapted to circuit boards of different thicknesses is consistent, so that the clamping positioning accuracy of the circuit board can still be maintained while adapting to circuit boards of different thicknesses.

[0068] Reference Figure 6 and Figure 9 In this embodiment, the frame 1 includes a horizontal mounting base 16 and a vertical mounting base 17. The horizontal mounting base 16 is made of marble and is horizontally arranged in two at intervals. The vertical mounting base 17 is made of casting and has a channel window 171 for the circuit board to pass through. There are also two vertically spaced vertical mounting bases 17, each with both ends fixedly connected to two horizontal mounting bases 16 by bolts. Therefore, during manufacturing, because... The vertical mounting base 17 can be easily manufactured to form the passage window 171. Therefore, it is only necessary to maintain the flatness and accuracy of the two adjacent surfaces of the vertical horizontal mounting base 16. This allows for a simpler process to produce a vertical frame with structural strength that meets the requirements and higher shape accuracy. In addition, an adhesive layer is applied between the two end faces of the vertical mounting base 17 and the adjacent surfaces of the two vertical horizontal mounting bases 16 to improve the stability of the vertical mounting base 17 on the vertical horizontal mounting base 16 when fastened with bolts.

[0069] The implementation principle of the PCB board transfer device in this application embodiment is as follows: On the one hand, when adjustments are needed according to the size of the circuit board, the amplitude adjustment motor 23 drives the amplitude adjustment pulley 21 to rotate. During this process, the amplitude adjustment belt 22 causes the upper connecting group and the lower connecting group to move closer or further apart, so that the two clamping plate assemblies 3 and the upper and lower vertical plate limiting seats 4 can accommodate circuit boards of different sizes. At the same time, since the two sides of the amplitude adjustment belt 22 are connected to the upper connecting group and the lower connecting group respectively, the tension exerted on the amplitude adjustment belt 22 by the weight of the upper connecting group and the lower connecting group can be canceled out. Therefore, the actual position of the upper connecting group and the lower connecting group is different from the predetermined position. With smaller errors, the circuit board can fill more of the clamping gap of the clamping plate assembly 3, thereby improving the clamping stability of the circuit board. On the other hand, when the circuit board needs to be processed, the robot first uses a vertically oriented circuit board to pass through the board channel groove 41 in the loading area 11, and then the board is fed into the working area 12 by the board feeding assembly 5 for processing. After the processing of the circuit board is completed, it is fed into the unloading area 13 by the board feeding assembly 5. Finally, the robot removes the vertically oriented circuit board from the board channel groove 41 in the unloading area 13. Thus, this device can cooperate with other devices to realize automatic loading and unloading of circuit boards.

[0070] This application also discloses a flying probe testing machine. (See also...) Figure 10 and Figure 11 The flying probe tester includes the aforementioned PCB board station transfer device, X-axis drive 9, Y-axis drive 91, probe base 92, Z-axis linear motor 93, and probe 94. The X-axis drive 9 has a lead screw slide structure; the Y-axis drive 91 also has a lead screw slide structure, and the frame of the Y-axis drive 91 is connected to the slide of the X-axis drive 9. The probe base 92 is fixedly connected to the slide of the Y-axis drive 91. The Z-axis linear motor 93 is fixedly mounted on the probe base 92. The probe 94 is slidably connected to the probe base 92 through a slider guide structure. At the same time, the probe 94 is also connected to the Z-axis linear motor 93 to perform flying probe testing on the circuit board in the working area 12. In addition, compared with the method of realizing the reciprocating motion of the probe 94 in the Z-axis direction through motor belt drive, this design can improve the smoothness and motion accuracy of the reciprocating linear motion of the probe 94 by using the Z-axis linear motor 93.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A PCB board transfer device, characterized in that: include: The frame (1) is equipped with a loading area (11), a working area (12) and a unloading area (13); Amplitude adjustment base (2) is slidably disposed on the frame (1), and the plurality of amplitude adjustment bases (2) are divided into an upper connecting group and a lower connecting group; Amplitude adjustment pulley (21) is rotatably mounted on the frame (1); An amplitude-adjusting belt (22) is fitted on the amplitude-adjusting pulley (21). One side of the amplitude-adjusting belt (22) is connected to the upper connecting group, and the other side is connected to the lower connecting group. An amplitude modulation motor (23) is mounted on the frame (1), and the amplitude modulation motor (23) is connected to the amplitude modulation pulley (21); Clamping plate assembly (3) is disposed in the working area (12), and the two clamping plate assemblies (3) are respectively connected to the upper connecting group and the lower connecting group; Vertical plate limiting seat (4), two vertical plate limiting seats (4) are connected to one clamping plate assembly (3), one is located in the loading area (11) and the other is located in the unloading area (13). The vertical plate limiting seat (4) is provided with a plate channel groove (41) that communicates with the clamping gap of the clamping plate assembly (3). A plate feeding assembly (5) is mounted on the frame (1); The frame (1) is provided with side clamps (7) and side clamp shifting drive (8) in the working area (12) near the loading area (11) and the unloading area (13). The side clamps (7) are connected to the frame (1) through the side clamp shifting drive (8). The side clamp shifting drive (8) is used to allow the clamping gap of the side clamps (7) to enter or leave the workpiece. The side clamps (7) near the loading area (11) are also connected to a side clamp amplitude adjustment drive (81). The side clamp amplitude adjustment drive (81) is used to move the side clamps (7) near the loading area (11) towards the unloading area (13). The side clamp (7) includes: a side clamp base (71) connected to the side clamp shifting drive (8); a base spindle (72) disposed on the side clamp base (71), two base spindles (72) being parallel and spaced apart; a sliding spindle (73) slidably disposed on the side clamp base (71); a tensioning drive (74) disposed on the side clamp base (71), the tensioning drive (74) being connected to the sliding spindle (73); and a secondary pressure seat (75) rotatably sleeved on one of the base spindles (72), the secondary pressure seat (75) being divided into a secondary drive arm (751) and a secondary clamping arm (752), the secondary drive arm (751) being provided with a tensioning mating hole (7511), the tensioning mating hole (7511) being for the sliding spindle to... A shaft (73) is movably inserted to allow the sliding mandrel (73) to rotate relative to the opening and closing mating hole (7511) and slide closer to or away from the base mandrel (72). The auxiliary clamping arm (752) is used to abut against the workpiece, and the abutting surface is on the same plane as the surface of the clamping plate (31) near the clamping plate (32). The main pressure seat (76) is rotatably sleeved on another base mandrel (72). The main pressure seat (76) is divided into a main opening drive arm (761), a main closing drive arm (762), and a main clamping arm (763). The main opening drive arm (761) abuts against the sliding mandrel (73), and the main closing drive arm (762) is connected to the side clamping base (71) by a closing elastic element (77).

2. The PCB board transfer device according to claim 1, characterized in that: The clamping plate assembly (3) is connected to an amplitude adjustment follower seat (6), which is slidably connected to the frame (1). The amplitude adjustment follower seat (6) is provided with a series groove (61). A series block (62) and a flexible contact block (63) are connected between the amplitude adjustment follower seat (6) and the amplitude adjustment seat (2). One end of the series block (62) is connected to the amplitude adjustment seat (2), and the other end passes through the slot of the series groove (61). The flexible contact block (63) is connected to the end of the series block (62) away from the amplitude adjustment seat (2), and multiple flexible contact blocks (63) abut against the upper or lower sidewall of the series groove (61) respectively.

3. The PCB board station transfer device according to claim 2, characterized in that: The clamping plate assembly (3) includes a clamping base plate (31), a clamping plate (32), and a clamping drive. The clamping base plate (31) is fixedly connected to the vertical plate limiting seat (4). The clamping plate (32) is slidably connected to the clamping base plate (31). The clamping drive is connected to the clamping plate (32) and is used to move the clamping plate (32) closer to or further away from the clamping base plate (31).

4. The PCB board transfer device according to claim 1, characterized in that: One of the plate feeding assemblies (5) is connected to one of the clamping plate assemblies (3) and two of the vertical plate limiting seats (4). The plate feeding assembly (5) includes: a plate conveying pulley (51), a plurality of plate conveying pulleys (51) are divided into three groups, and the plurality of plate conveying pulleys (51) are rotatably connected to the vertical plate limiting seats (4) or rotatably mounted on the vertical plate limiting seats (4) and the clamping plate assembly (3); and three plate conveying belts (52), three of which are respectively sleeved on the three groups of plate conveying belts. On the pulley (51), the interval between two adjacent conveyor belts (52) is close to the boundary between the working area (12) and the loading area (11) or the unloading area (13). The conveyor belts (52) are located in the clamping gap between the plate channel groove (41) and the clamping plate assembly (3). Support blocks (53), a plurality of support blocks (53) are respectively connected to the vertical plate limiting seat (4) and the clamping plate (31). The support blocks (53) and the conveyor belts (52) are connected by... The support block (53) is connected to the side that abuts against the workpiece, and abuts against the inner side of the conveyor belt (52); multiple series pulleys (54) are divided into two groups, each group of series pulleys (54) is located between two adjacent groups of conveyor belt pulleys (51), and multiple series pulleys (54) in each group are respectively connected to different groups of conveyor belt pulleys (51); a series belt (55) is sleeved on the series pulleys (54); and a drive pulley (56) is set on a In the set of the series pulleys (54), the drive pulley (56) is fitted onto the series belt (55); the plate feeding motor (57) is connected to the drive pulley (56); the tensioning seat (58) is slidably disposed on the vertical plate limiting seat (4) and the clamping base plate (31), and the tensioning seat (58) is rotatably connected to the tension adjusting wheel (59), which abuts against the plate conveying belt (52) or the series belt (55).

5. The PCB board station transfer device according to claim 1, characterized in that: A limiting cylinder (42), a limiting connecting block (43), and a limiting stop block (44) are connected between the clamping plate assembly (3) located below and the vertical plate limiting seat (4) located in the unloading area (13). The limiting cylinder (42) is connected to the clamping plate (31), and a limiting notch (421) is provided at the end of the piston rod of the limiting cylinder (42). The limiting connecting block (43) is bolted to the piston rod of the limiting cylinder (42), and the limiting connecting block (43) is provided with a connecting groove (431). The connecting groove (431) is for the piston rod of the limiting cylinder (42) to be inserted. The connecting groove (431) cooperates with the limiting notch (421) to limit the relative rotation between the limiting connecting block (43) and the piston rod of the limiting cylinder (42). The limiting stop (44) is connected to the limiting connecting block (43) to control the opening and closing between the clamping gap of the clamping plate assembly (3) and the plate channel groove (41). The limiting stop (44) is made of an alloy material with a hard oxide layer.

6. The PCB board transfer device according to claim 1, characterized in that: The frame (1) includes a vertical horizontal mounting base (16) and a vertical vertical mounting base (17). The vertical horizontal mounting base (16) is made of marble and there are two vertical horizontal mounting bases (16) arranged in parallel and spaced apart. The vertical vertical mounting base (17) is made of metal and has a channel window (171) for the workpiece to pass through. There are two vertical vertical mounting bases (17) arranged in parallel and spaced apart. The two ends of the vertical vertical mounting base (17) are respectively bolted to the two vertical horizontal mounting bases (16). An adhesive layer is provided between the two end faces of the vertical vertical mounting base (17) and the surfaces of the two vertical horizontal mounting bases (16) that are close to each other.

7. A flying probe testing machine, characterized in that: The device includes a PCB board transfer station as described in any one of claims 1 to 6, an X-axis drive (9), a Y-axis drive (91), a needle base (92), a Z-axis linear motor (93), and a probe (94). The X-axis drive (9) is connected to the frame (1); the Y-axis drive (91) is connected to the X-axis drive (9); the needle base (92) is connected to the Y-axis drive (91); the Z-axis linear motor (93) is mounted on the needle base (92); the probe (94) is slidably connected to the needle base (92), and the probe (94) is connected to the output shaft of the Z-axis linear motor (93).

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