PCB testing device

Abstract

The invention relates to the technical field of monitoring devices, and provides a PCB testing device which comprises a rack and a first conveying mechanism, a second conveying mechanism, a transfer mechanism, a testing mechanism and a positioning mechanism which are installed on the rack, and the transfer mechanism comprises a linear module and two clamping assemblies installed on the linear module. Wherein one set of clamping assembly is used for transferring the PCB on the first conveying mechanism to the testing mechanism, and the other set of clamping assembly is used for transferring the PCB on the testing mechanism to the second conveying mechanism; two opposite sides of the PCBs are respectively positioned as a first clamping surface and a second clamping surface, and the first clamping surface abuts against the clamping assembly; the positioning mechanism comprises an adjusting assembly and two positioning plates, the two positioning plates are slidably installed on the testing mechanism and used for abutting against the two second clamping faces, and the adjusting assembly is used for driving the two positioning plates to slide. According to the PCB testing device, the accuracy of the PCB placed in the detection area of the rack is improved.

Description

Technical Field

[0001] This application relates to the technical field of monitoring devices, and particularly to a PCB board testing device. Background Art

[0002] A PCB board, also known as a printed circuit board, is an electronic component with printed conductors and configured spaces for mounting electronic components. As the most important core component in electronic products, the requirements for its performance testing are getting higher and higher. The quality of the PCB board directly affects the quality of the entire electronic device.

[0003] Currently, a PCB board testing device is usually used to test PCB boards. The PCB board testing device includes a frame, a cylinder mounted on the frame, and a probe mounted on the piston of the cylinder. The specific testing method is to place the PCB board on the frame, then start the cylinder to drive the probe to press down on the pads or test points of the PCB board, and then, with the PCB board powered on, obtain typical values such as voltage values and current values of the test circuit, so as to observe whether the tested circuit is normal through an ammeter, voltmeter or device.

[0004] In actual operation, the precise positioning of the PCB board within the testing area of the frame has become a challenge. The position of the PCB board placed on the testing frame of the frame affects the accuracy of probe detection. Therefore, a testing device that improves the accuracy of placing the PCB board in the detection area of the frame is needed. Summary of the Invention

[0005] In order to improve the accuracy of placing the PCB board in the detection area of the frame, this application provides a PCB board testing device.

[0006] The PCB board testing device provided by this application adopts the following technical solutions: A PCB board testing device includes a frame and a first conveying mechanism, a second conveying mechanism, a transfer mechanism, a testing mechanism, and a positioning mechanism mounted on the frame. The transfer mechanism includes a linear module and two sets of clamping components mounted on the linear module. One set of the clamping components is used to transfer the PCB board on the first conveying mechanism to the testing mechanism, and the other set of the clamping components is used to transfer the PCB board on the testing mechanism to the second conveying mechanism; Two opposite sides of the PCB board are respectively defined as a first clamping surface and a second clamping surface, and the first clamping surface abuts against the clamping component; the positioning mechanism includes an adjusting component and two positioning plates. Both of the two positioning plates are slidably mounted on the testing mechanism, and the two positioning plates are used to abut against the two second clamping surfaces, and the adjusting component is used to drive the two positioning plates to slide.

[0007] By adopting the above technical solution, during the process of transferring the PCB board to the testing mechanism, the clamping assembly can adjust the position of the PCB board in the first direction (X-axis) by clamping the first clamping surface of the PCB board; and when the PCB board is placed on the testing mechanism, the two second positioning plates clamp the second clamping surface, so as to adjust the position of the PCB board in the second direction (Y-axis).

[0008] Under the combined action of the clamping assembly and the positioning mechanism, the PCB board can be completely fixed within the X-Y axis plane, ensuring that the probes of the testing mechanism can be directly opposite to the test points of the PCB board, thereby improving the accuracy of the detection of the PCB board and reducing the possibility of damage to the probes.

[0009] Optionally, two sliding grooves are formed on the upper surface of the testing mechanism, and the two positioning plates are respectively slidably mounted in the sliding grooves; the adjusting assembly includes an abutting plate, a pressing and unlocking component and two first springs. An installation groove communicating with the two sliding grooves is formed in the testing mechanism, the abutting plate is slidably mounted in the installation groove, and the sliding direction of the abutting plate is perpendicular to the sliding direction of the positioning plate; the opposite sides of the abutting plate are set as contact surfaces, and the distance between the two contact surfaces close to the testing mechanism is greater than the distance between the two contact surfaces away from the testing mechanism. The first spring is installed between the positioning plate and the sliding groove, and the elastic force of the first spring is used to keep the positioning plate in contact with the contact surface; the pressing and unlocking component is installed on the testing mechanism and connected to the abutting plate, and the pressing and unlocking component has a first state and a second state; when the pressing and unlocking component is in the first state, the positioning plate abuts against the upper side of the contact surface; when the pressing and unlocking component is in the second state, the positioning plate abuts against the lower side of the contact surface.

[0010] By adopting the above technical solution, the pressing and unlocking component is in the second state under normal conditions, that is, the positioning plate abuts against the lower side of the contact surface. At this time, the maximum distance is between the two positioning plates, so as to facilitate placing the PCB board between the two positioning plates.

[0011] After the PCB board enters between the two positioning plates, the pressing and unlocking component is switched to the first state. The positioning plate abuts against the upper side of the contact surface under the elastic force of the first spring. At this time, the distance between the two positioning plates decreases and can abut against the second clamping surface of the PCB board under the elasticity of the second spring, so as to realize the positioning of the PCB board in the second direction (Y-axis).

[0012] Optionally, the pressing and unlocking component includes a pressing block, a second spring, and an unlocking rod. A pressing groove communicating with the installation groove is formed on the upper surface of the testing mechanism. The pressing block is slidably installed in the pressing groove and connected to the abutting plate. The second spring is installed between the pressing block and the pressing groove, and the elastic force of the second spring is used to force the pressing block to move towards one side of the pressing groove. The pressing block is respectively provided with a first positioning groove and a second positioning groove along the sliding direction. Both ends of the first positioning groove and the second positioning groove are communicated through an unlocking groove. One end of the unlocking rod is rotatably installed on the inner wall of the pressing groove, and the other end of the unlocking rod is provided with an insertion block. The insertion block is slidably installed in the unlocking groove. When the insertion block is inserted into the first positioning groove, the pressing and unlocking component is in the first state. When the insertion block is inserted into the second positioning groove, the pressing and unlocking component is in the second state.

[0013] By adopting the above technical solution, the insertion block is normally located in the second positioning groove to make the maximum distance between the two positioning plates. After the PCB board enters between the two positioning plates, by pressing the pressing block, at this time the unlocking rod rotates, and the insertion block enters one of the unlocking grooves from the second positioning groove and is inserted into the first positioning groove through the unlocking groove. The elastic force of the second spring can drive the unlocking rod to be normally inserted into the first positioning groove to complete the switching between the first state and the second state of the pressing and unlocking part, so as to adjust the distance between the two second positioning plates, so that the two second positioning plates clamp the second clamping surface of the PCB board.

[0014] When it is necessary to cancel the abutment between the second positioning plate and the second clamping surface of the PCB board, by pressing the pressing block again, the insertion block is switched from the first positioning groove to the second positioning groove. This unlocking method is relatively simple and improves the switching efficiency.

[0015] Optionally, the clamping component is used to press the pressing block.

[0016] By adopting the above technical solution, the clamping component can press the pressing block during the process of putting the PCB board down / removing it from the testing mechanism, so as to change the contact position between the positioning plate and the abutting plate, and complete / cancel the contact between the positioning plate and the second clamping surface of the PCB board, further improving the convenience of switching the pressing and unlocking component.

[0017] Optionally, the distance between the sides of the two contact surfaces away from the testing mechanism is adapted to the distance between the two second clamping surfaces.

[0018] By adopting the above technical solution, by keeping the distance between the two contact surfaces the same as the distance between the two second clamping surfaces, it is possible to prevent the two positioning plates from squeezing the PCB board during the process of approaching each other under the elastic force of the first spring.

[0019] Optionally, the abutting plate includes a first plate and two second plates. The first plate is connected to the pressing and unlocking component. The two second plates are both mounted on the upper surface of the first plate. The first plate is provided with a distance adjusting component for adjusting the distance between the two second plates. The contact surface includes a first contact surface and a second contact surface. The first contact surface is provided on the first plate, and the second contact surface is provided on the side of the second plate away from the adjacent second plate.

[0020] By adopting the above technical solution, by setting the distance adjusting component, the distance between the two second plates can be changed, and further the distance between the two second contact surfaces can be changed, so that the positioning plate can clamp PCB boards of different sizes to adjust their positions in the second direction, further improving the practicability of the device.

[0021] Optionally, a guiding block is integrally formed on one side of the first plate close to the second plate. The guiding block has a guiding surface for guiding the positioning plate to abut against the first contact surface.

[0022] By adopting the above technical solution, the guiding block is provided to facilitate guiding the positioning plate to contact the first contact surface.

[0023] Optionally, the distance adjusting component includes a distance adjusting block, a fixing block, a threaded rod and two hinged rods. A distance adjusting groove is formed on the upper surface of the first plate. The distance adjusting block is slidably mounted in the distance adjusting groove. The two ends of the hinged rod are respectively rotatably connected to the distance adjusting block and the second plate. The fixing block is fixed to the first plate, and a first threaded groove is formed in the fixing block. The threaded rod passes through the first threaded groove and is rotatably connected to the distance adjusting block.

[0024] By adopting the above technical solution, by rotating the threaded rod, one end of the threaded rod is rotatably connected to the distance adjusting block, so that the distance adjusting block can be driven to slide in the distance adjusting groove. Since the two ends of the hinged rod are respectively rotatably connected to the distance adjusting block and the second plate, the two second plates can be made to approach / separate from each other, serving to adjust the distance between the two second contact surfaces.

[0025] Optionally, the first conveying mechanism includes a lifting cylinder and two conveying components. The lifting cylinder is located between the two conveying components. The conveying component includes a mounting frame, a conveyor belt, a driving motor and a plurality of conveying rollers. The conveying rollers are all rotatably mounted on the mounting frame. The driving motor is used to drive the conveying rollers to rotate. The conveyor belt is wound around the surfaces of all the conveying rollers. The PCB board is placed on the upper surfaces of the conveyor belts of the two conveying components.

[0026] By adopting the above technical solution, by driving the driving motor, the conveyor belt can be made to convey, and thus the PCB board can be conveyed; when the PCB board is conveyed to the designated position, the lifting cylinder is used to lift the PCB board, so that there is a gap between the PCB board and the conveyor belt, facilitating the clamping assembly to clamp it.

[0027] Optionally, rubber pads are provided on one side of the two positioning plates close to each other.

[0028] By adopting the above technical solution, by providing rubber pads, the positioning plate and the PCB board can be flexibly connected, avoiding damage to the PCB board.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adjusting the first direction of the PCB board by the clamping assembly and adjusting the second direction of the PCB board by the positioning mechanism, it can be completely fixed in the X-Y axis plane, ensuring that the probe of the testing mechanism can be directly opposite to the test point of the PCB board, thereby improving the accuracy of detecting the PCB board and reducing the possibility of damage to the probe; 2. By providing a pressing and unlocking component, the clamping component can press the pressing block during the process of putting down / removing the PCB board from the testing mechanism, so as to change the contact position between the positioning plate and the abutting plate, and complete / cancel the contact between the positioning plate and the second clamping surface of the PCB board, further improving the convenience of switching the pressing and unlocking component. Description of the Drawings

[0030] Figure 1 is a partial cross-sectional view of Embodiment 1; Figure 2 is Figure 1 a partial enlarged view of part a of Figure 3 is Figure 1 a partial enlarged view of part b of Figure 4 is a structural schematic diagram of the testing mechanism of Embodiment 1; Figure 5 is a partial cross-sectional view of the workbench of Embodiment 1, mainly showing the positioning plate abutted against the lower side of the abutting plate; Figure 6 is a partial cross-sectional view of the workbench of Embodiment 1, mainly showing the positioning plate abutted against the upper side of the abutting plate; Figure 7 is another partial cross-sectional view of the workbench of Embodiment 1, mainly showing the connecting rod; Figure 8 is a structural schematic diagram of the pressing and unlocking component of Embodiment 1; Figure 9 is a partial cross-sectional view of the workbench of Embodiment 2; Figure 10 It is a schematic structural diagram of the distance adjustment component in Embodiment 2.

[0031] Description of the reference numerals: 1, frame; 2, first conveying mechanism; 21, lifting cylinder; 22, conveying component; 23, mounting bracket; 24, conveyor belt; 25, driving motor; 26, lifting plate; 27, blocking member; 3, second conveying mechanism; 4, transfer mechanism; 41, linear module; 42, clamping component; 43, clamping bracket; 44, clamping cylinder; 45, clamping jaw; 46, mounting plate; 47, sliding seat; 5, testing mechanism; 51, gantry; 52, testing cylinder; 53, testing plate; 54, workbench; 541, sliding groove; 542, mounting groove; 543, pressing groove; 544, connecting groove; 545, connecting rod; 546, switching groove; 547, moving groove; 6, positioning mechanism; 61, positioning plate; 611, rubber pad; 62, adjusting component; 63, abutting plate; 631, first plate; 632, second plate; 633, sliding groove; 634, distance adjustment groove; 635, guiding block; 64, pressing and unlocking component; 641, pressing block; 642, second spring; 643, unlocking rod; 644, inserting block; 645, first positioning groove; 646, second positioning groove; 647, unlocking groove; 65, first spring; 66, contact surface; 661, first contact surface; 662, second contact surface; 7, distance adjustment component; 71, distance adjustment block; 72, fixed block; 73, threaded rod; 74, articulated rod; 75, threaded groove. Detailed implementation manners

[0032] The following further describes the present application in detail with reference to the Figure 1-10 accompanying drawings.

[0033] Embodiment 1: An embodiment of the present application discloses a PCB board testing device.

[0034] Referring to Figure 1 , a PCB board testing device includes a frame 1, a first conveying mechanism 2 mounted on the frame 1, a second conveying structure, a transfer mechanism 4, a testing mechanism 5 and a positioning mechanism 6. The first conveying mechanism 2 is used to transfer the PCB board from the production front end to the testing mechanism 5. The second conveying mechanism 3 is used to transfer the PCB board from the testing mechanism 5 to the production back end. The transfer mechanism 4 is used to transfer the PCB board on the first conveying mechanism 2 to the testing mechanism 5 and the PCB board on the testing mechanism 5 to the second conveying mechanism 3. The testing mechanism 5 is used to detect the PCB board.

[0035] Referring to Figure 2, the first conveying mechanism 2 includes a lifting cylinder 21 and two conveying components 22. The two conveying components 22 include mounting frames 23, conveyor belts 24, drive motors 25 and a plurality of conveying rollers. All the conveying rollers are rotatably mounted on the mounting frames 23, and all the conveyor belts 24 are wound around the outer walls of all the conveying rollers; the drive motors 25 are mounted on the mounting frames 23 and connected to one of the conveying rollers; both sides of the PCB board are placed on the upper surfaces of the two conveyor belts 24, and by driving the drive motor 25, the PCB board can be driven.

[0036] Refer to Figure 2 , the lifting cylinder 21 is mounted on the frame 1 and located between the two mounting frames 23. A lifting plate 26 is mounted on the piston of the lifting cylinder 21; when the conveying component 22 conveys the PCB board above the lifting plate 26, by driving the lifting cylinder 21, the lifting plate 26 can be brought into contact with the bottom of the PCB board, and there is a gap between the PCB board and the conveyor belt 24; so as to facilitate the rotating mechanism 4 to rotate the PCB board.

[0037] The first conveying mechanism 2 and the second conveying mechanism 3 have the same structure, and will not be described in detail here.

[0038] In this embodiment, two sets of blocking members 27 are provided between the two mounting frames 23. The two sets of blocking members 27 are arranged at intervals along the conveying direction of the conveying component 22 and located on both sides of the lifting cylinder 21; the blocking member 27 includes a blocking cylinder and a blocking block. The blocking cylinder is mounted on the frame 1, and the blocking block is mounted on the piston of the blocking cylinder; when the PCB board is transferred above the lifting plate 26; drive the two blocking cylinders so that the blocking plates are located on both sides of the PCB board respectively.

[0039] Refer to Figure 1 and Figure 3 , the transfer mechanism 4 includes a linear module 41 and two sets of clamping components 42 mounted on the linear module 41. One set of clamping components 42 is used to transfer the PCB board on the first conveying mechanism 2 to the testing mechanism 5, and the other set of clamping components 42 is used to transfer the PCB board that has completed the test on the testing mechanism 5 to the second conveying mechanism 3.

[0040] Refer to Figure 3, a linear module 41 is installed with a mounting plate 46, and two sets of clamping components 42 are both installed on the mounting plate 46; in this embodiment, the clamping component 42 includes a clamping frame 43, a clamping cylinder 44, an electric push rod, and two jaws 45. A sliding seat 47 is installed on the mounting plate 46, and the clamping frame 43 is slidably installed on the sliding seat 47; the clamping cylinder 44 is installed on the mounting plate 46 and is connected to the clamping frame 43, and the clamping cylinder 44 is used to drive the clamping frame 43 to approach / away from one side of the sliding mechanism; one of the jaws 45 is fixed to the clamping frame 43, and the other jaw 45 is slidably installed on the clamping frame 43. The electric push rod is installed on the clamping frame 43 and is connected to the jaw 45 slidably installed on the clamping frame 43. By driving the electric push rod, the two jaws 45 can be made to approach each other and clamp on opposite sides of the PCB board.

[0041] Referring to Figure 4 , the testing mechanism 5 includes a gantry 51, a testing cylinder 52, a testing board 53, a probe, and a workbench 54. The clamping component 42 is used to place / take out the PCB on / from the workbench 54; the gantry 51 is installed on the frame 1 and is located above the workbench 54. The testing cylinder 52 is fixed to the gantry 51, and the piston of the testing cylinder 52 is disposed opposite to the workbench 54; the testing board 53 is installed on the piston of the testing cylinder 52, and the probe is installed on the side of the testing board 53 close to the workbench 54. During testing, the piston of the testing cylinder 52 is driven to approach the workbench 54 side, so that the probe contacts the test points of the PCB board, thereby being able to test whether the circuit of the PCB board is normal.

[0042] Also referring to Figure 5 , the positioning mechanism 6 includes an adjusting component 62 and two positioning plates 61. Two sliding grooves 541 are formed on the upper surface of the workbench 54, and the two positioning plates 61 are respectively slidably installed in the two sliding grooves 541. The adjusting component 62 is used to drive the positioning plates 61 to slide on the workbench 54 to change the distance between the two positioning plates 61; in this embodiment, the two opposite sides of the PCB board are respectively defined as the first clamping surface and the second clamping surface. The two jaws 45 respectively clamp the first clamping surface of the PCB board, and the two positioning plates 61 respectively clamp the second clamping surface of the PCB board.

[0043] In this embodiment, rubber pads 611 are provided on the sides of the two positioning plates 61 close to each other. The rubber pads 611 are provided to enable the positioning plates 61 to be in flexible contact with the PCB board, avoiding damage to the PCB board.

[0044] Referring to Figure 5 , the adjusting component 62 includes a pressing plate, a pressing and unlocking component 64, and two first springs 65. The two ends of the first spring 65 are respectively connected to the positioning plate 61 and the sliding groove 541, and the elastic force of the first spring 65 is used to drive the two positioning plates 61 to approach each other.

[0045] Refer to Figure 6 , an installation groove 542 communicating with the sliding groove 541 is formed in the workbench 54, and one ends of the two positioning plates 61 protrude into the installation groove 542; the pressing plate is slidably installed in the installation groove 542, and the sliding direction of the pressing plate is perpendicular to the sliding direction of the positioning plate 61; contact surfaces 66 are provided on both opposite sides of the pressing plate, and the distance between the two contact surfaces 66 on the side close to the workbench 54 (i.e., the lower side of the contact surface 66) is greater than the distance between the two contact surfaces 66 on the side away from the workbench 54 (i.e., the upper side of the contact surface 66), and the distance between the upper sides of the two contact surfaces 66 is the same as the distance between the two second clamping surfaces of the PCB.

[0046] The pressing and unlocking member 64 has a first state and a second state. When the pressing and unlocking member 64 is in the first state, the two positioning plates 61 are abutted against the upper side of the contact surface 66 under the elastic force of the first spring 65. At this time, the distance between the two positioning plates 61 is the minimum, and they can be abutted against the second clamping surface of the PCB, so as to be able to adjust the second-direction position of the PCB and avoid squeezing the PCB; when the pressing member is in the second state, the two positioning plates 61 are abutted against the lower side of the contact surface 66 under the elastic force of the first spring 65. At this time, the distance between the two positioning plates 61 remains the maximum, so as to facilitate placing the PCB between the two positioning plates 61.

[0047] Refer to Figure 7 , the pressing and unlocking member 64 includes a pressing block 641, a second spring 642 and an unlocking rod 643. A pressing groove 543 is formed on the upper surface of the workbench 54. The pressing block 641 is slidably installed in the pressing groove 543 and can be pressed when the clamping jaw 45 moves close to the side of the workbench 54; the pressing groove 543 communicates with the installation groove 542 through a connecting groove 544. A connecting rod 545 is arranged in the connecting groove 544, and the two ends of the connecting rod 545 are respectively connected to the abutting plate 63 and the pressing block 641; the two ends of the second spring 642 are respectively connected to the pressing groove 543 and the pressing block 641, and the elastic force of the second spring 642 is used to drive the pressing block 641 to move towards one side of the pressing groove 543.

[0048] Refer to Figure 7 and Figure 8, a switching groove 546 is formed on the side of the pressing groove 543 away from the connecting groove 544. One end of the unlocking lever 643 is rotatably installed in the switching groove 546, and an insertion block 644 is installed at the other end of the unlocking lever 643. A first positioning groove 645 and a second positioning groove 646 are formed on the side of the pressing block 641 close to the switching groove 546. The first positioning groove 645 is located on the side of the second positioning groove 646 away from the pressing groove 543. Both ends of the first positioning groove 645 and the second positioning groove 646 are respectively communicated through an unlocking groove 647. The insertion block 644 is slidably installed in the unlocking groove 647 and is used for being inserted into the first positioning groove 645 and the second positioning groove 646.

[0049] The insertion block 644 is normally located in the second positioning groove 646, so that the maximum distance is maintained between the two positioning plates 61. After the PCB board enters between the two positioning plates 61, the clamping jaws 45 contact the pressing block 641 and press the pressing block 641. At this time, the unlocking lever 643 rotates, and the insertion block 644 enters one of the unlocking grooves 647 from the second positioning groove 646 and is inserted into the first positioning groove 645 through the unlocking groove 647. The elastic force of the second spring 642 can drive the unlocking lever 643 to be normally inserted into the first positioning groove 645, so as to complete the switching between the first state and the second state of the pressing unlocking part, thereby adjusting the distance between the two second positioning plates 61, so that the two second positioning plates 61 clamp the second clamping surface of the PCB board.

[0050] When it is necessary to cancel the contact between the second positioning plate 61 and the second clamping surface of the PCB board, the pressing block 641 is pressed again, so that the insertion block 644 is switched from the first positioning groove 645 to the second positioning groove 646. This unlocking method is relatively simple and improves the switching efficiency.

[0051] The implementation principle of Embodiment 1 of this application is as follows: During the process of transferring the PCB board to the testing mechanism 5, the two clamping jaws 45 can adjust the position of the PCB board in the first direction (X-axis) by clamping the first clamping surface of the PCB board. After the PCB board enters between the two positioning plates 61, the clamping jaws 45 will press the pressing block 641. At this time, the insertion block 644 enters the first positioning groove 645 from the second positioning groove 646, so that the pressing unlocking component 64 is switched to the first state. At this time, the two positioning plates 61 are abutted against the upper side of the abutting plate 63 under the elastic force of the positioning spring. The two positioning plates 61 are abutted against the second clamping surface of the PCB board, and can adjust the position of the PCB board in the second direction (Y-axis).

[0052] Under the combined action of the clamping component 42 and the positioning mechanism 6, the PCB board can be completely fixed in the X-Y axis plane, ensuring that the probes of the testing mechanism 5 can be directly opposite to the test points of the PCB board, thereby improving the accuracy of the detection of the PCB board and reducing the possibility of damage to the probes.

[0053] Example 2: The embodiment of the present application discloses a PCB board testing device.

[0054] Referring to Figure 9 , the difference between the second embodiment and the first embodiment of the present application is that: the abutting plate 63 includes a first plate 631 and two second plates 632. The first plate 631 is slidably installed in the installation groove 542 and is connected to the connecting rod 545; a guiding block 635 is integrally formed on the upper side of the first plate 631. Guiding surfaces are provided on opposite sides of the guiding block, and the distance between the two guiding surfaces gradually decreases from the side close to the installation groove 542 to the side far from the installation groove 542.

[0055] Referring to Figure 10 , a sliding groove 633 is formed on the upper surface of the guiding block 635. The extending direction of the sliding groove 633 is the same as that of the sliding groove 541. The two second plates 632 are respectively slidably installed in the two sliding grooves 633; a distance adjusting assembly 7 is provided on the guiding block 635, and the distance adjusting assembly 7 is used to change the distance between the two second plates 632.

[0056] The contact surface 66 includes a first contact surface 661 and a second contact surface 662. The first contact surface 661 is provided on the side of the first plate 631 close to the positioning plate 61, and the second contact surface 662 is provided on the side of the second plate 632 close to the positioning plate 61; when the positioning plate 61 abuts against the first contact surface 661, the pressing unlocking member 64 is in the second state, and when the positioning plate 61 abuts against the second contact surface 662, the pressing unlocking member 64 is in the first state.

[0057] The distance adjusting assembly 7 includes a distance adjusting block 71, a fixing block 72, a threaded rod 73 and two hinge rods 74. A distance adjusting groove 634 is formed on the upper surface of the guiding block 635. The distance adjusting groove 634 is located between the two sliding grooves 633, and the extending direction of the distance adjusting groove 634 is perpendicular to the extending direction of the sliding groove 633; the distance adjusting block 71 is slidably installed in the distance adjusting groove 634, and the two ends of the hinge rod 74 are respectively rotatably connected to the distance adjusting block 71 and the second plate 632.

[0058] The fixing block 72 is fixed to the guiding block 635 and is located at one end of the distance adjusting groove 634. The fixing block 72 is provided with a threaded groove 75. The threaded rod 73 is in threaded cooperation with the threaded groove 75. One end of the threaded rod 73 is rotatably connected to the distance adjusting block 71; a movable groove 547 communicating with the installation groove 542 is formed on the side wall of the workbench 54, and the other end of the threaded rod 73 passes through the movable groove 547 and is exposed to the outside.

[0059] The implementation principle of the second embodiment of the present application is: By rotating the threaded rod 73, one end of the threaded rod 73 is rotatably connected to the distance adjusting block 71, so as to be able to drive the distance adjusting block 71 to slide within the distance adjusting groove 634; since both ends of the hinge rod 74 are respectively rotatably connected to the distance adjusting block 71 and the second plate 632, it is further possible to move the two second plates 632 closer to / away from each other; this serves to change the distance between the two second contact surfaces 662, so that the positioning plate 61 can clamp PCB boards of different sizes to adjust their positions in the second direction, further improving the practicability of the device.

[0060] The above is the preferred embodiment of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A PCB board testing device, characterized in that: It includes a frame (1), a first conveying mechanism (2), a second conveying mechanism (3), a transfer mechanism (4), a testing mechanism (5) and a positioning mechanism (6) installed on the frame (1). The transfer mechanism (4) includes a linear module (41) and two sets of clamping components (42) installed on the linear module (41). One set of the clamping components (42) is used to transfer the PCB board on the first conveying mechanism (2) to the testing mechanism (5), and the other set of the clamping components (42) is used to transfer the PCB board on the testing mechanism (5) to the second conveying mechanism (3). The two opposite sides of the PCB board are respectively positioned as a first clamping surface and a second clamping surface, and the first clamping surface abuts against the clamping component (42). The positioning mechanism (6) includes an adjusting component (62) and two positioning plates (61). The two positioning plates (61) are both slidably installed on the testing mechanism (5), and the two positioning plates (61) are used to abut against the two second clamping surfaces, and the adjusting component (62) is used to drive the two positioning plates (61) to slide.

2. The PCB board testing device according to claim 1, characterized in that: Two sliding grooves (541) are formed on the upper surface of the testing mechanism (5), and the two positioning plates (61) are respectively slidably installed in the sliding grooves (541). The adjusting component (62) includes an abutting plate (63), a pressing and unlocking component (64) and two first springs (65). An installation groove (542) communicating with the two sliding grooves (541) is formed in the testing mechanism (5). The abutting plate (63) is slidably installed in the installation groove (542), and the sliding direction of the abutting plate (63) is perpendicular to the sliding direction of the positioning plate (61). Contact surfaces (66) are arranged on the opposite sides of the abutting plate (63). The distance between the two contact surfaces (66) on the side close to the testing mechanism (5) is greater than the distance between the two contact surfaces (66) on the side far from the testing mechanism (5). The first spring (65) is installed between the positioning plate (61) and the sliding groove (541), and the elastic force of the first spring (65) is used to keep the positioning plate (61) in contact with the contact surface (66). The pressing and unlocking component (64) is installed on the testing mechanism (5) and connected to the abutting plate (63). The pressing and unlocking component (64) has a first state and a second state. When the pressing and unlocking component (64) is in the first state, the positioning plate (61) abuts against the upper side of the contact surface (66). When the pressing and unlocking component (64) is in the second state, the positioning plate (61) abuts against the lower side of the contact surface (66).

3. A PCB board testing device according to claim 2, characterized in that: The pressing and unlocking component (64) includes a pressing block (641), a second spring (642), and an unlocking rod (643). A pressing groove (543) communicating with the installation groove (542) is formed in the upper surface of the testing mechanism (5). The pressing block (641) is slidably installed in the pressing groove (543) and is connected to the abutting plate (63). The second spring (642) is installed between the pressing block (641) and the pressing groove (543), and the elastic force of the second spring (642) is used to force the pressing block (641) to move towards one side of the pressing groove (543). The pressing block (641) is respectively provided with a first positioning groove (645) and a second positioning groove (646) along the sliding direction. The two ends of the first positioning groove (645) and the second positioning groove (646) are respectively communicated through an unlocking groove (647). One end of the unlocking rod (643) is rotatably installed on the inner wall of the pressing groove (543), and an insertion block (644) is arranged at the other end of the unlocking rod (643). The insertion block (644) is slidably installed in the unlocking groove (647). When the insertion block (644) is inserted into the first positioning groove (645), the pressing and unlocking component (64) is in the first state. When the insertion block (644) is inserted into the second positioning groove (646), the pressing and unlocking component (64) is in the second state.

4. A PCB board testing device according to claim 3, characterized in that: The clamping assembly (42) is used to press the pressing block (641).

5. The PCB board testing device according to claim 2, characterized in that: The distance between the two sides of the two contact surfaces (66) away from the testing mechanism (5) is adapted to the distance between the two second clamping surfaces.

6. A PCB board testing device according to claim 5, characterized in that: The abutting plate (63) includes a first plate (631) and two second plates (632). The first plate (631) is connected to the pressing and unlocking component (64). The two second plates (632) are both installed on the upper surface of the first plate (631). The first plate (631) is provided with an adjusting component (7) for adjusting the distance between the two second plates (632). The contact surface (66) includes a first contact surface (661) and a second contact surface (662). The first contact surface (661) is arranged on the first plate (631), and the second contact surface (662) is arranged on the side of the second plate (632) away from the adjacent second plate (632).

7. The PCB board testing device according to claim 6, characterized in that: A guiding block (635) is integrally formed on one side of the first plate (631) close to the second plate (632). The guiding block (635) has a guiding surface, and the guiding surface is used to guide the positioning plate (61) to abut against the first contact surface (661).

8. A PCB board testing device according to claim 6, characterized in that: The distance adjustment component (7) includes a distance adjustment block (71), a fixed block (72), a threaded rod (73), and two hinge rods (74). A distance adjustment groove (634) is formed on the upper surface of the first plate (631), and the distance adjustment block (71) is slidably installed in the distance adjustment groove (634); both ends of the hinge rod (74) are rotatably connected to the distance adjustment block (71) and the second plate (632) respectively; the fixed block (72) is fixed to the first plate (631), a first threaded groove (75) is formed in the fixed block (72), and the threaded rod (73) passes through the first threaded groove (75) and is rotatably connected to the distance adjustment block (71).

9. A PCB board testing device according to claim 1, characterized in that: The first conveying mechanism (2) includes a lifting cylinder (21) and two conveying components (22). The lifting cylinder (21) is located between the two conveying components (22); each conveying component (22) includes a mounting frame (23), a conveyor belt (24), a driving motor (25), and a plurality of conveying rollers. The conveying rollers are all rotatably installed on the mounting frame (23), and the driving motor (25) is used to drive the conveying rollers to rotate; the conveyor belt (24) is wound around the surfaces of all the conveying rollers, and the PCB board is placed on the upper surfaces of the conveyor belts (24) of the two conveying components (22).

10. A PCB board testing device according to claim 1, characterized in that: Rubber pads (611) are provided on one side of the two positioning plates (61) that are close to each other.

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