PCB flying probe detection equipment and PCB

Abstract

The invention relates to the technical field of circuit board detection equipment, in particular to PCB flying probe detection equipment and a PCB.The PCB flying probe detection equipment comprises a machine table, a moving device and a positioning clamp device are installed on the machine table, the moving device comprises an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, and the Z-axis moving assembly comprises two Z-axis guide seats; a driving rotating roller, a driven rotating roller and a Z-axis driving part are arranged on each Z-axis guide seat, a transmission belt is wound between the driving rotating roller and the driven rotating roller, the Z-axis driving part is connected with the driving rotating roller, a detection assembly is arranged on the transmission belt and comprises a fixed seat, and a probe is arranged on the fixed seat; according to the device, after the transmission belt is tensioned through the tensioning pieces, the stability of the transmission belt is improved, and through the tension of the tensioning pieces, sufficient friction force is kept between the transmission belt and the fixed seat, and the probe moves on the transmission belt more stably.

Description

Technical Field

[0001] This application relates to the technical field of circuit board detection equipment, and particularly relates to a flying probe testing device for PCB boards and a PCB board. Background Art

[0002] Flying probe testing is an intelligent testing device that automatically tests on a PCB board to be tested by a computer-controlled moving probe and locates and discriminates PCB board faults. Due to its unique way of loading test probes, its minimum test pitch can be greatly reduced, meeting the test requirements of modern high-density PCB boards. The flying probe testing machine effectively solves the problem of low test coverage existing in traditional bed-of-nails testing and a type of testing system with a general interface plus an adapter. When performing flying probe testing, there is no need to manufacture a dedicated test bed and fixture for each variety, which greatly saves the enterprise's test cost and the R & D test cycle of new products. The adoption of flying probe testing technology has solved the urgent problems for some electronic device manufacturers, as well as repair and R & D enterprises, with small batch sizes and multiple varieties. Flying probe testing plays a huge role in the production line detection, repair detection, and electronic product R & D detection fields of PCB boards with its unique high precision, high coverage rate, and high flexibility.

[0003] Currently, during the repeated telescopic detection process of the probe in some flying probe testing machines towards the PCB board through a driving device, the probe may shake during the repeated telescopic process, causing the contact between the probe and the detection point on the PCB board to shift, resulting in deviation of the final detection result. Secondly, when the pin sizes on PCB boards of different sizes are often inconsistent, the same-width tip often has the problem of exceeding the width of the pin and contacting other pins when dealing with pins of different sizes. Therefore, it is necessary to replace different probe seats for PCB boards of different batch sizes, and it is rather troublesome to replace the probe seats. Therefore, further improvements can be made. Summary of the Invention

[0004] In order to reduce the occurrence of the situation where the detection result deviates due to the shaking of the probe during the detection process, this application provides a flying probe testing device for PCB boards and a PCB board.

[0005] In the first aspect, a flying probe testing device for PCB boards provided by this application adopts the following technical solution: Referring to Figure 1 、 2 , a flying probe testing device for PCB boards includes a machine table, on which a moving device and a positioning fixture device are installed. The moving device includes an X-axis moving component, a Y-axis moving component, and a Z-axis moving component. The Y-axis moving component is arranged on the X-axis moving component, and the Z-axis moving component is arranged on the Y-axis moving component; The Z-axis moving assembly includes two Z-axis guide seats. Each Z-axis guide seat is provided with a driving rotating roller, a driven rotating roller, and a Z-axis driving member. A transmission belt is wound between the driving rotating roller and the driven rotating roller. The Z-axis driving member is connected to the driving rotating roller. A detection assembly is arranged on the transmission belt. The detection assembly includes a fixed seat, and a probe is arranged on the fixed seat. Tensioning members are respectively arranged at both ends of the Z-axis guide seat where the driven rotating roller is located. A rotating rod passes through the driven rotating roller. Both ends of the rotating rod respectively extend towards both ends of the driven rotating roller and pass through the Z-axis guide seat to be connected to the tensioning members. The tensioning members tension the transmission belt by fixing both ends of the rotating rod.

[0006] By adopting the above technical solution, during the detection process of the PCB board, the probe on the fixed seat cooperates with the tensioning member, the driving rotating roller, the driven rotating roller, and the transmission belt. After the transmission belt is tensioned by the tensioning member, the stability of the transmission belt during repeated movement can be improved. Through the tension of the tensioning member, sufficient friction is maintained between the transmission belt and the fixed seat, reducing the slack caused by the long-term repeated movement of the transmission belt. Thus, the probe installed on the fixed seat moves more stably on the transmission belt, and further reduces the deviation of the probe detection result.

[0007] Optionally, tensioning grooves are respectively opened at both ends of the Z-axis guide seat where the driven rotating roller is located. Both ends of the rotating rod respectively pass through the Z-axis guide seat through the tensioning grooves. The tensioning member includes two fixing blocks. The two fixing blocks are respectively arranged at both ends of the Z-axis guide seat where the tensioning groove is located. Threaded holes are opened on the fixing blocks. Tightening bolts are arranged on the fixing blocks through the threaded holes. The two tightening bolts are oppositely arranged in the corresponding fixing blocks, and the ends of the two tightening bolts abut against both sides of the end of the rotating rod.

[0008] By adopting the above technical solution, the two tightening bolts are arranged to abut against the end of the rotating rod in opposite directions, thereby driving the transmission belt between the driving rotating roller and the driven rotating roller to be tensioned. The friction between the tensioned transmission belt and the fixed seat always maintains a stable magnitude, thereby reducing slipping caused by the reduction of friction, and further enabling the probe on the fixed seat to always maintain a stable movement state following the fixed seat.

[0009] Optionally, a connecting seat is sleeved on the transmission belt. The connecting seat is fixedly arranged on the transmission belt through bolts, and the fixed seat is fixedly arranged on the connecting seat. On both sides of the Z-axis guide seat near the fixed seat along its length direction, stable sliding grooves are respectively opened. On both sides of the fixed seat along its length direction, stable sliding blocks are respectively arranged. The stable sliding blocks are slidably arranged in the stable sliding grooves. When the transmission belt drives the fixed seat to move repeatedly through the connecting seat, the stable sliding blocks move synchronously in the stable sliding grooves.

[0010] By adopting the above technical solution, on the one hand, the fixed seat moves repeatedly under the action of the transmission belt and the connecting seat. On the other hand, when the transmission belt drives the fixed seat to move, the stable sliding blocks on the fixed seat move synchronously in the stable sliding grooves on the Z-axis guide seat along with the transmission belt, making the repeated movement of the fixed seat more stable.

[0011] Optionally, the fixed seat includes a locking part and a fixing part. The locking part and the fixing part are arranged at intervals on the connecting seat. A detection seat is arranged between the locking part and the fixing part. The probe is fixedly arranged on the detection seat. A detection circuit system is arranged in the detection seat; An elevating pressing part is arranged on the locking part. The pressing part abuts against one end of the detection seat. A fixing hole is opened on the fixing part. A fixing column is arranged on the detection seat. The fixing column can be inserted into the fixing hole. The detection seat is detachably arranged between the locking part and the fixing part through the pressing part and the fixing column.

[0012] By adopting the above technical solution, when it is necessary to quickly adjust the probe size according to the batch size of the PCB board, just make the pressing part away from the detection seat and pull out the fixing column on the detection seat from the fixing hole, then the detection seat and the probe as a whole can be quickly disassembled. After disassembly, install the suitable probe together with its detection seat between the locking part and the fixing part, and then use the pressing part to tighten, so as to increase the adaptability of the equipment to detect PCBs of different sizes.

[0013] Optionally, the pressing part includes a pressing screw. A threaded pressing hole is opened on the locking part. The pressing screw is threadedly arranged in the pressing hole. A locking block is arranged at the end of the pressing screw. The pressing screw passes through the locking part through the pressing hole so that the locking block is in tight contact with the detection seat Buffer grooves are respectively opened on both sides of the pressing hole in the locking part. Buffer parts are arranged in the buffer grooves. One end of the buffer part is connected to the locking block. The buffer part passes through the locking part through the buffer groove and is connected to the locking block.

[0014] By adopting the above technical solution, the locking block is driven by the pressing screw to fix the detection seat. When it is necessary to replace the detection seat, the pressing screw can also be made away from the detection seat, so as to replace the detection seat.

[0015] Optionally, the buffer member includes a buffer upper rod and a buffer lower rod. The buffer lower rod is fixedly arranged in the buffer groove. One end of the buffer upper rod penetrates through one end of the buffer lower rod, and one end of the buffer upper rod is telescopically arranged in the buffer lower rod. The other end of the buffer upper rod is connected to the locking block. A limiting groove is formed on the inner peripheral side of the buffer lower rod. A limiting block is arranged at the inner end of the buffer upper rod inserted into the buffer lower rod. The buffer upper rod is limited in the buffer lower rod through the cooperation of the limiting block and the limiting groove. A buffer spring is sleeved between the part of the buffer upper rod inserted into the buffer lower rod and the limiting block.

[0016] By adopting the above technical solution, when the tightening screw controls the locking block to be tightly fixed to the detection seat, the buffer upper rod connected to the locking block also moves towards the detection seat following the locking block, so that a part of the buffer upper rod in the buffer lower rod and the buffer spring are deformed, thereby absorbing the pressure and impact load of the locking block on the detection seat, and thus improving the stability of the locking block fixing the detection seat.

[0017] Optionally, the positioning fixture device includes two groups of vertical positioning fixtures, and the two groups of vertical positioning fixtures are arranged at intervals along the height of the machine table. The vertical positioning fixture includes a bearing seat, a fixed clamping plate and a clamping plate driving member are arranged on the bearing seat. The clamping plate driving member is fixedly arranged on the bearing seat, the fixed clamping plate is fixedly arranged on the movable end of the clamping plate driving member, and the fixed clamping plate and the bearing seat are arranged at intervals.

[0018] By adopting the above technical solution, the worker can place the PCB board between the two bearing seats, and use the clamping plate driving members on each bearing seat to drive the fixed clamping plates to approach the PCB boards on the bearing seats for clamping and fixing.

[0019] Optionally, the X-axis moving component includes two groups of transverse lead screws and two groups of guide rods. The two groups of transverse lead screws and the two groups of guide rods are arranged at intervals on the upper and lower sides of the positioning fixture device. The two groups of transverse lead screws are arranged at intervals and staggered along the height direction of the machine table in the machine table. Transverse driving members are respectively arranged at the opposite ends of the two groups of transverse lead screws. The two groups of guide rods are arranged at intervals in the machine table. The Y-axis moving component is arranged between the transverse lead screw and the guide rod.

[0020] By adopting the above technical solution, when the probe needs to move horizontally, the transverse driving member drives the transverse lead screw to rotate, and the Y-axis moving component moves horizontally through cooperation with the guide rod, so that the probe in the Z-axis moving component on the Y-axis moving component moves horizontally.

[0021] Optionally, the Y-axis moving assembly includes two sets of vertical moving seats. The vertical moving seats are arranged between the horizontal moving screw rod and the guiding rod, and the vertical moving seats can move horizontally following the rotation of the horizontal moving screw rod under the action of the horizontal moving driving member. A vertical moving screw rod and a vertical moving driving member are arranged on the vertical moving seats. The vertical moving driving member is arranged at the end of the vertical moving seat, and the vertical moving driving member drives the vertical moving screw rod to rotate. The X-axis moving assembly is arranged on the vertical moving screw rod.

[0022] By adopting the above technical solution, when the probe needs to move vertically, the vertical driving member drives the vertical moving screw rod to rotate, so that the probe in the Z-axis moving assembly arranged on the vertical moving screw rod moves vertically.

[0023] In a second aspect, the present application provides a PCB board, adopting the following technical solution: A PCB board includes a board body, and a plurality of electrical components are arranged on the board body.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the detection process of the PCB board, the probe on the fixing seat is cooperated with the tensioning member, the driving rotating roller, the driven rotating roller and the transmission belt. After the transmission belt is tensioned by the tensioning member, the stability of the transmission belt during repeated movement can be improved. Through the tension of the tensioning member, sufficient friction is maintained between the transmission belt and the fixing seat, reducing the slack caused by the long-term repeated movement of the transmission belt, so that the probe installed on the fixing seat moves more stably on the transmission belt, thereby reducing the deviation of the probe detection result; 2. The two fastening bolts are used to oppositely abut against the end of the rotating rod, thereby driving the transmission belt between the driving rotating roller and the driven rotating roller to be tensioned. The friction between the tensioned transmission belt and the fixing seat always maintains a stable magnitude, thereby reducing slipping due to reduced friction, and further enabling the probe on the fixing seat to always maintain a stable movement state following the fixing seat; 3. When it is necessary to quickly adjust the probe size according to the batch size of the PCB board, only need to move the fastening member away from the detection seat, and pull out the fixing column on the detection seat from the fixing hole, then the detection seat and the probe as a whole can be quickly disassembled. After disassembly, install the suitable probe together with its detection seat between the locking part and the fixing part, and then use the fastening member to fasten, thereby increasing the adaptability of the device to detect PCBs of different sizes. Description of the Drawings

[0025] Figure 1 is the overall structural schematic diagram in the embodiment of the present application.

[0026] Figure 2 is the partial cross-sectional schematic diagram of the machine table in the embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of a partial structure of the Z-axis guide base in an embodiment of the present application.

[0028] Figure 4 It is a schematic cross-sectional view of a partial structure of the Z-axis guide base in an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of a partial structure of the positioning fixture device in an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of a partial structure of the lateral positioning fixture in an embodiment of the present application.

[0031] Explanation of reference numerals: 1. Machine table; 2. Moving device; 3. X-axis moving component; 31. Transverse lead screw; 32. Guide rod; 33. Transverse driving member; 4. Y-axis moving component; 41. Vertical moving seat; 42. Vertical lead screw; 43. Vertical driving member; 5. Z-axis moving component; 51. Z-axis guide base; 511. Tensioning groove; 512. Stable sliding groove; 52. Driving rotating roller; 53. Driven rotating roller; 54. Z-axis driving member; 55. Transmission belt; 56. Rotating rod; 57. Connecting seat; 6. Positioning fixture device; 61. Vertical positioning fixture; 611. Carrying seat; 612. Fixed clamping plate; 613. Clamping plate driving member; 62. Lateral positioning fixture; 621. Clamping seat; 622. Adjusting clamping plate; 623. Adjusting bolt; 624. Transverse moving plate; 625. Transverse sliding rail; 626. Transverse sliding block; 7. Detection component; 71. Fixed seat; 711. Locking part; 7111. Buffer groove; 712. Fixing part; 7121. Fixing hole; 713. Buffer member; 7131. Buffer upper rod; 7132. Buffer lower rod; 7133. Buffer spring; 7134. Limiting groove; 714. Pressing member; 7141. Pressing screw; 7142. Locking block; 7143. First clamping block; 715. Stable sliding block; 72. Probe; 73. Detection seat; 731. Fixed column; 732. First clamping groove; 8. Tensioning member; 81. Fixed block; 82. Tightening bolt. Detailed implementation manners

[0032] The following further elaborates on the present application Figures 1-6 with reference to the attached drawings.

[0033] The embodiment of the present application discloses a flying probe testing device for PCB boards.

[0034] Refer to Figure 1 , 2, A PCB board flying probe testing device includes a machine table 1. Inside the machine table 1, a moving device 2 and a positioning fixture device 6 are installed. The moving device 2 includes an X-axis moving component 3, a Y-axis moving component 4, and a Z-axis moving component 5. The Y-axis moving component 4 is movably arranged on the X-axis moving component 3, and the Z-axis moving component 5 is movably arranged on the Y-axis moving component 4; The Z-axis moving component 5 includes two Z-axis guide seats 51. The Z-axis guide seats 51 are slidably arranged on the Y-axis moving component 4. The two groups of Z-axis guide seats 51 are arranged oppositely. On each opposite side of the Z-axis guide seat 51, a driving rotating roller 52, a driven rotating roller 53, and a Z-axis driving member 54 are arranged. The driving rotating roller 52 and the driven rotating roller 53 are spaced apart from each other at both ends inside the Z-axis guide seat 51, and a transmission belt 55 is wound between the driving rotating roller 52 and the driven rotating roller 53. The Z-axis driving member 54 is arranged at the bottom of the Z-axis guide seat 51, and its movable end passes through the Z-axis guide seat 51 and is connected to the driving rotating roller 52. A detection component 7 is arranged on the transmission belt 55. The detection component 7 includes a fixed seat 71, and a probe 72 is arranged on the fixed seat 71; Tensioning members 8 are respectively arranged at both ends of the Z-axis guide seat 51 where the driven rotating roller 53 is located. A rotating rod 56 is passed through the driven rotating roller 53. Both ends of the rotating rod 56 extend towards both ends of the driven rotating roller 53 and pass through the Z-axis guide seat 51 and are connected to the tensioning members 8. The tensioning members 8 move the position of the driven rotating roller 53 by fixing both ends of the rotating rod 56, thereby tensioning the transmission belt 55.

[0035] During the actual detection process of the PCB board, the probe 72 on the fixed seat 71 is cooperated with the tensioning members 8, the driving rotating roller 52, the driven rotating roller 53, and the transmission belt 55. After the transmission belt 55 is tensioned by the tensioning members 8, the stability of the transmission belt 55 during repeated movement can be improved. Through the pulling force of the tensioning members 8, sufficient friction is maintained between the transmission belt 55 and the fixed seat 71, reducing the slack of the transmission belt 55 caused by long-term repeated movement. Thus, the probe 72 installed on the fixed seat 71 moves more stably on the transmission belt 55, and further reduces the deviation of the detection result of the probe 72.

[0036] Refer to Figure 1 、 3 As shown in FIGS. 4, specifically, in this embodiment, tensioning grooves 511 are respectively opened at both ends of the Z-axis guide seat 51 along its length direction where the driven rotating roller 53 is located. Both ends of the rotating rod 56 pass through the Z-axis guide seat 51 through the tensioning grooves 511. Both ends of the rotating rod 56 are respectively provided with flat abutting portions, and are connected to the tensioning members 8 by using the abutting portions; The tensioning member 8 includes two fixing blocks 81. The two fixing blocks 81 are spaced apart from each other and parallel respectively, and are arranged at both ends of the tensioning groove 511 of the Z-axis guide seat 51. Threaded holes are formed in the fixing blocks 81, and tightening bolts 82 are arranged in the fixing blocks 81 through the threaded holes. The two tightening bolts 82 are oppositely arranged in the corresponding fixing blocks 81, and the ends of the two tightening bolts 82 are abutted against both sides of the end of the rotating rod 56. Thus, the drive belt 55 is tensioned by adjusting the length of the tightening bolts 82 inserted into the threaded holes.

[0037] During actual use, the two tightening bolts 82 are arranged to abut against the end of the rotating rod 56 in an opposite direction, so as to drive the drive belt 55 between the driving rotating roller 52 and the driven rotating roller 53 to be tensioned. The friction force between the tensioned drive belt 55 and the fixing seat 71 always maintains a stable magnitude, thereby reducing slippage caused by the reduction of the friction force. Furthermore, the probe 72 on the fixing seat 71 always maintains a stable motion state following the fixing seat 71.

[0038] Refer to Figure 1 、 3 、4. Specifically, in this embodiment, a connecting seat 57 is sleeved on the drive belt 55. The connecting seat 57 is fixedly arranged on the drive belt 55 through bolts, and the fixing seat 71 is fixedly arranged on the side of the connecting seat 57 away from the drive belt 55. In order to further increase the stability of the probe 72 during repeated movement in the detection process, on both sides along the length direction of the side of the Z-axis guide seat 51 close to the fixing seat 71, dovetail-shaped stable sliding grooves 512 are respectively formed. On both sides along the length direction of the fixing seat 71, dovetail-shaped stable sliding blocks 715 are respectively arranged. The stable sliding blocks 715 can be slidably arranged in the stable sliding grooves 512. And due to the characteristics of the dovetail shape, the stable sliding blocks 715 will not break away from the stable sliding grooves 512. When the drive belt 55 drives the fixing seat 71 to move repeatedly through the connecting seat 57, the stable sliding blocks 715 move synchronously in the stable sliding grooves 512.

[0039] During actual use, through the cooperation between the connecting seat 57 fixed on the transmission belt 55 and the stable slider 715 and the stable chute 512, on the one hand, the fixing seat 71 makes reciprocating movements under the action of the transmission belt 55 and the connecting seat 57. On the other hand, during the process of the transmission belt 55 driving the fixing seat 71 to move, the stable slider 715 on the fixing seat 71 synchronously moves with the transmission belt 55 in the stable chute 512 on the Z-axis guide seat 51, making the reciprocating movement of the fixing seat 71 more stable. These two methods cooperate with each other and are indispensable. It is precisely because the tensioning member 8 tensions the transmission belt 55 that the connecting seat 57 on the transmission belt 55 can be connected to the fixing seat 71. Without tensioning, if the connecting seat 57 on the transmission belt 55 is forcibly connected to the fixing seat 71, after using for a period of time, the transmission belt 55 will become loose, lacking the frictional force to drive the fixing seat 71 to move slowly, and the relative movement between the stable chute 512 and the stable slider 715 will also become difficult.

[0040] Refer to Figure 3 、 4 Specifically, in this embodiment, the fixing seat 71 includes a locking portion 711 and a fixing portion 712. The locking portion 711 and the fixing portion 712 are arranged at intervals on the connecting seat 57. The stable sliders 715 are respectively arranged on the sides of the locking portion 711 and the fixing portion 712 close to the stable chute 512. A detection seat 73 is arranged between the locking portion 711 and the fixing portion 712. The probe 72 is fixedly arranged on the detection seat 73, and a detection circuit system is arranged in the detection seat 73; The locking portion 711 is provided with a liftable pressing member 714. The pressing member 714 abuts against one end of the detection seat 73. A fixing hole 7121 is formed in the fixing portion 712. A fixing column 731 is arranged on the detection seat 73. The fixing column 731 can be inserted into the fixing hole 7121. The detection seat 73 is detachably arranged between the locking portion 711 and the fixing portion 712 through the pressing member 714 and the fixing column 731. Among them, the pressing member 714 includes a pressing screw 7141. A threaded pressing hole is formed in the locking portion 711. The pressing screw 7141 is threadedly arranged in the pressing hole. A locking block 7142 is arranged at one end of the pressing screw 7141 passing through the pressing hole. The pressing screw 7141 is rotatably arranged in the locking block 7142. Thus, by rotating the pressing screw 7141, the lifting of the locking block 7142 is driven. Two first clamping blocks 7143 are arranged at one end of the locking block 7142 close to the detection seat 73. Correspondingly, a first clamping groove 732 is arranged on the detection seat 73. When the locking block 7142 abuts against the detection seat 73, the first clamping blocks 7143 are clamped in the first clamping groove 732, so that the pressing screw 7141 passes through the locking portion 711 through the pressing hole to make the locking block 7142 and the detection seat 73 tightly arranged; In addition, a limiting post is also provided on the connecting seat 57. When the detection seat 73 is installed between the locking part 711 and the fixing part 712, one end of the detection seat 73 is limited and fixed by the limiting post.

[0041] During actual use, when it is necessary to quickly adjust the size of the probe 72 according to the batch size of the PCB board, only need to move the pressing member 714 away from the detection seat 73, and pull out the fixing post 731 on the detection seat 73 from the fixing hole 7121, then the detection seat 73 and the probe 72 as a whole can be quickly disassembled. After disassembly, install the suitable probe 72 together with its detection seat 73 between the locking part 711 and the fixing part 712, and then use the pressing member 714 to press tightly, so as to increase the adaptability of the device to detect PCBs of different sizes.

[0042] Refer to Figure 3 、 4 Specifically, in this embodiment, buffer grooves 7111 are respectively formed on both sides of the pressing hole in the locking part 711. A buffer member 713 is arranged in the buffer groove 7111. The buffer member 713 includes a buffer upper rod 7131 and a buffer lower rod 7132. The buffer lower rod 7132 is fixedly arranged in the buffer groove 7111. One end of the buffer upper rod 7131 penetrates through one end of the buffer lower rod 7132 and is telescopically arranged in the buffer lower rod 7132. The other end of the buffer upper rod 7131 is connected to the locking block 7142; A limiting groove 7134 is formed on the inner peripheral side of the buffer lower rod 7132. A limiting block is arranged at the inner end of the buffer upper rod 7131 inserted into the buffer lower rod 7132. The buffer upper rod 7131 is limited and arranged in the buffer lower rod 7132 by the cooperation of the limiting block and the limiting groove 7134. A buffer spring 7133 is sleeved between the part of the buffer upper rod 7131 inserted into the buffer lower rod 7132 and the limiting block.

[0043] During actual use, when the pressing screw 7141 controls the locking block 7142 to press tightly and fix the detection seat 73, the buffer upper rod 7131 connected to the locking block 7142 also moves towards the detection seat 73 along with the locking block 7142, so that a part of the buffer upper rod 7131 in the buffer lower rod 7132 and the buffer spring 7133 are deformed, thereby absorbing the pressure and impact load of the locking block 7142 on the detection seat 73, and thus improving the stability of the locking block 7142 in fixing the detection seat 73.

[0044] Refer to Figure 5 、 6 Specifically, in this embodiment, the positioning fixture device 6 includes two groups of vertical positioning fixtures 61, and the two groups of vertical positioning fixtures 61 are arranged at intervals along the height of the machine table 1; The vertical positioning fixture 61 includes a bearing seat 611, on which a fixed clamping plate 612 and a clamping plate driving member 613 are provided. The clamping plate driving member 613 is fixedly arranged on the bearing seat 611, and the fixed clamping plate 612 is fixedly arranged on the movable end of the clamping plate driving member 613. There is a gap between the fixed clamping plate 612 and the bearing seat 611.

[0045] In addition, two groups of horizontal positioning fixtures 62 are also arranged in the machine table 1, and the two groups of horizontal positioning fixtures 62 are arranged at intervals along the width of the machine table 1; The horizontal positioning fixture 62 includes a transverse moving plate 624 and a clamping seat 621. The clamping seat 621 is fixedly arranged in the middle of the transverse moving plate 624. Transverse moving slide rails 625 are arranged at both ends of the transverse moving plate 624. Correspondingly, transverse moving sliders 626 are respectively arranged at both ends of the transverse moving plate 624. The transverse moving sliders 626 are slidably arranged on the transverse moving slide rails 625, so that the clamping seat 621 can move and adjust along with the transverse moving plate 624; An adjusting clamping plate 622 and an adjusting bolt 623 are arranged on the clamping seat 621. There is a gap between the clamping seat 621 and the adjusting clamping plate 622. The adjusting bolt 623 passes through the adjusting clamping plate 622 and is connected to the clamping seat 621. When fixing, the PCB board is placed between the adjusting clamping plate 622 and the clamping seat 621, and the adjusting bolt 623 is used to adjust the adjusting clamping plate 622 to clamp and fix the PCB board.

[0046] During the actual use process, the worker can place the PCB board between the two bearing seats 611, and use the clamping plate driving member 613 on each bearing seat 611 to drive the fixed clamping plate 612 to approach the PCB board on the bearing seat 611 for clamping and fixing.

[0047] Refer to Figure 2 , specifically, in this embodiment, the X-axis moving assembly 3 includes two groups of transverse lead screws 31 and two groups of guide rods 32. The two groups of transverse lead screws 31 and the two groups of guide rods 32 are arranged at intervals on the upper and lower sides of the positioning fixture device 6; The two groups of transverse lead screws 31 are arranged at intervals and staggeredly along the height direction of the machine table 1 inside the machine table 1. Transverse driving members 33 are respectively arranged at the opposite ends of the two groups of transverse lead screws 31. The two groups of guide rods 32 are arranged at intervals inside the machine table 1; The Y-axis moving assembly 4 is arranged between the transverse lead screw 31 and the guide rod 32.

[0048] During the actual use process, when the probe 72 needs to move horizontally, the horizontal driving member drives the transverse lead screw 31 to rotate, and the Y-axis moving assembly 4 moves horizontally through cooperation with the guide rod 32, so that the probe 72 in the Z-axis moving assembly 5 on the Y-axis moving assembly 4 moves horizontally.

[0049] Refer to Figure 2, Specifically, in this embodiment, the Y-axis moving component 4 includes two sets of vertical moving seats 41. The vertical moving seats 41 are arranged between the horizontal moving screw rod 31 and the guiding rod 32. And the vertical moving seats 41 can move horizontally following the rotation of the horizontal moving screw rod 31 under the action of the horizontal moving driving member 33. A vertical moving screw rod 42 and a vertical moving driving member 43 are arranged on the vertical moving seats 41. The vertical moving driving member 43 is arranged at the end of the vertical moving seat 41, and the vertical moving driving member 43 drives the vertical moving screw rod 42 to rotate. The X-axis moving component 3 is arranged on the vertical moving screw rod 42.

[0050] During the actual use process, when the probe 72 needs to move vertically, the vertical driving member drives the vertical moving screw rod 42 to rotate, so that the probe 72 in the Z-axis moving component 5 arranged on the vertical moving screw rod 42 moves vertically.

[0051] The implementation principle of a PCB board flying probe testing device in an embodiment of the present application is as follows: On the one hand, the probe 72 is cooperated with the tensioning member 8, the driving rotating roller 52, the driven rotating roller 53 and the transmission belt 55 on the fixing seat 71. After the transmission belt 55 is tensioned by the tensioning member 8, the stability of the transmission belt 55 during repeated movement can be improved. Through the tension of the tensioning member 8, sufficient friction is maintained between the transmission belt 55 and the fixing seat 71, reducing the slack of the transmission belt 55 caused by long-term repeated movement. Thus, the probe 72 installed on the fixing seat 71 moves more stably on the transmission belt 55, and further reduces the deviation of the detection result of the probe 72. On the other hand, when it is necessary to quickly adjust the size of the probe 72 according to the batch size of the PCB board, only need to make the pressing member 714 away from the detection seat 73, and pull out the fixing column 731 on the detection seat 73 from the fixing hole 7121, then the detection seat 73 and the probe 72 as a whole can be quickly disassembled. After disassembly, the suitable probe 72 together with its detection seat 73 is installed between the locking portion 711 and the fixing portion 712, and then tightened by the pressing member 714, thereby increasing the adaptability of the device to detect PCBs of different sizes.

[0052] An embodiment of the present application also discloses a PCB board.

[0053] A PCB board includes a board body, and a plurality of electrical components are arranged on the board body.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same parts are denoted by the same reference numerals. Therefore: All equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flying probe testing device for PCB board, characterized by: The machine comprises a platform (1), on which a moving device (2) and a positioning fixture device (6) are installed, wherein the moving device (2) comprises an X-axis moving component (3), a Y-axis moving component (4) and a Z-axis moving component (5), wherein the Y-axis moving component (4) is arranged on the X-axis moving component (3), and the Z-axis moving component (5) is arranged on the Y-axis moving component (4); The Z-axis moving assembly (5) comprises two Z-axis guide seats (51), each Z-axis guide seat (51) is provided with an active rotating roller (52), a driven rotating roller (53) and a Z-axis driving member (54), a transmission belt (55) is wound between the active rotating roller (52) and the driven rotating roller (53), the Z-axis driving member (54) is connected to the active rotating roller (52), a detection assembly (7) is provided on the transmission belt (55), the detection assembly (7) comprises a fixed seat (71), and a probe (72) is provided on the fixed seat (71); The Z-axis guide seat (51) is located at both ends of the driven rotating roller (53) and is respectively provided with tensioning members (8); a rotating rod (56) is passed through the driven rotating roller (53); both ends of the rotating rod (56) respectively extend to both ends of the driven rotating roller (53) and pass through the Z-axis guide seat (51) to be connected with the tensioning member (8); the tensioning member (8) tensions the transmission belt (55) by fixing the two ends of the rotating rod (56).

2. A PCB flying probe testing device according to claim 1, characterized in that: The Z-axis guide seat (51) is provided with tensioning grooves (511) at both ends of the driven rotating roller (53), and the two ends of the rotating rod (56) are respectively passed through the tensioning grooves (511) and out of the Z-axis guide seat (51); The tensioning member (8) comprises two fixing blocks (81), the two fixing blocks (81) are respectively arranged at the two ends of the tensioning groove (511) of the Z-axis guide seat (51), a threaded hole is opened on the fixing block (81), a clamping bolt (82) is arranged on the fixing block (81) through the threaded hole, the two clamping bolts (82) are relatively arranged in the corresponding fixing blocks (81), and the ends of the two clamping bolts (82) are clamped on both sides of the end of the rotating rod (56).

3. A PCB flying probe testing device according to claim 2, characterized in that: The transmission belt (55) is sleeved with a connecting seat (57), the connecting seat (57) is fixedly arranged on the transmission belt (55) by means of bolts, and the fixing seat (71) is fixedly arranged on the connecting seat (57); The Z-axis guide seat (51) is provided with stable slide grooves (512) on both sides along the length direction of the fixed seat (71), and the fixed seat (71) is provided with stable sliders (715) on both sides along the length direction of the fixed seat (71). The stable sliders (715) can be slidably arranged in the stable slide grooves (512). When the transmission belt (55) drives the fixed seat (71) to move repeatedly through the connecting seat (57), the stable sliders (715) move synchronously in the stable slide grooves (512).

4. A flying probe detection device for PCB board according to claim 3, characterized in that: The fixing seat (71) comprises a locking portion (711) and a fixing portion (712); the locking portion (711) and the fixing portion (712) are arranged on the connecting seat (57) at an interval; a detection seat (73) is arranged between the locking portion (711) and the fixing portion (712); the probe (72) is fixedly arranged on the detection seat (73); and a detection circuit system is arranged in the detection seat (73); The locking portion (711) is provided with a liftable abutting member (714), the abutting member (714) abuts against one end of the detection seat (73), the fixing portion (712) is provided with a fixing hole (7121), the detection seat (73) is provided with a fixing column (731), the fixing column (731) can be inserted into the fixing hole (7121), and the detection seat (73) is detachably arranged between the locking portion (711) and the fixing portion (712) via the abutting member (714) and the fixing column (731).

5. A flying probe detection device for PCB board according to claim 4, characterized in that: The abutting member (714) comprises a abutting screw (7141), a threaded abutting hole is provided on the locking portion (711), the abutting screw (7141) is threadedly arranged in the abutting hole, a locking block (7142) is arranged at the end of the abutting screw (7141), and the abutting screw (7141) passes through the locking portion (711) through the abutting hole so that the locking block (7142) is abutted against the detection seat (73). The locking portion (711) is provided with buffer grooves (7111) on both sides of the abutting hole, and a buffer member (713) is provided in the buffer groove (7111). One end of the buffer member (713) is connected to the locking block (7142). The buffer member (713) passes through the locking portion (711) through the buffer groove (7111) and is connected to the locking block (7142).

6. A flying probe detection device for PCB board according to claim 5, characterized in that: The buffer member (713) comprises a buffer upper rod (7131) and a buffer lower rod (7132), wherein the buffer lower rod (7132) is fixedly arranged in the buffer groove (7111), one end of the buffer upper rod (7131) is passed through one end of the buffer lower rod (7132), and one end of the buffer upper rod (7131) is telescopically arranged in the buffer lower rod (7132), and the other end of the buffer upper rod (7131) is connected to the locking block (7142); A limiting groove (7134) is provided on the inner circumference of the buffer lower rod (7132); a limiting block is arranged on the inner end of the buffer upper rod (7131) inserted into the buffer lower rod (7132); the buffer upper rod (7131) is limitedly arranged in the buffer lower rod (7132) by the limiting block and the limiting groove (7134); a buffer spring (7133) is sleeved between the part of the buffer upper rod (7131) inserted into the buffer lower rod (7132) and the limiting block.

7. A flying probe testing device for PCB board according to claim 1, characterized in that: The positioning fixture device (6) comprises two groups of vertical positioning fixtures (61), and the two groups of vertical positioning fixtures (61) are arranged at intervals from each other along the height of the machine platform (1); The vertical positioning fixture (61) comprises a bearing seat (611), on which a fixed clamping plate (612) and a clamping plate driving member (613) are arranged, wherein the clamping plate driving member (613) is fixedly arranged on the bearing seat (611), and the fixed clamping plate (612) is fixedly arranged on the movable end of the clamping plate driving member (613), and the fixed clamping plate (612) and the bearing seat (611) are spaced apart.

8. A flying probe testing device for PCB board according to claim 1, characterized in that: The X-axis moving assembly (3) comprises two groups of transverse screw rods (31) and two groups of guide rods (32), and the two groups of transverse screw rods (31) and the two groups of guide rods (32) are arranged at intervals on the upper and lower sides of the positioning fixture device (6); The two groups of transverse screw rods (31) are spaced apart from each other along the height direction of the machine platform (1) and are staggeredly arranged in the machine platform (1); the two groups of transverse screw rods (31) are respectively provided with transverse driving members (33) at opposite ends; the two groups of guide rods (32) are spaced apart from each other and are arranged in the machine platform (1); the Y-axis moving assembly (4) is provided between the transverse screw rods (31) and the guide rods (32).

9. A flying probe testing device for PCB board according to claim 8, characterized in that: The Y-axis moving assembly (4) comprises two groups of vertical moving seats (41), wherein the vertical moving seats (41) are arranged between the transverse moving screw rod (31) and the guide rod (32), and the vertical moving seats (41) can move horizontally following the rotation of the transverse moving screw rod (31) under the action of the transverse moving driving member (33), and the vertical moving screw rod (42) and the vertical moving driving member (43) are arranged on the vertical moving seat (41), and the vertical moving driving member (43) is arranged at the end of the vertical moving seat (41), and the vertical moving driving member (43) drives the vertical moving screw rod (42) to rotate, and the X-axis moving assembly (3) is arranged on the vertical moving screw rod (42).

10. A PCB board, based on the PCB board flying probe detection device according to any one of claims 1 to 9, characterized in that: It comprises a plate body, on which a plurality of electrical components are arranged.

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