A modular PCB probe station

Abstract

This application provides a modular PCB probe station, relating to the field of PCB probe stations. It includes a frame, with a base mounted on the frame between two sliding mechanisms. A support plate is slidably mounted on the side of the base, and a flip shaft is rotatably mounted on the top of the support plate. The inner end of the flip shaft is provided with a clamping assembly for holding the PCB board, and the outer end of the flip shaft is mounted with a first gear. A gear rack meshing with the first gear is mounted on the outer side of the support plate. A following mechanism is provided between the bottom of the support plate and the base. During the movement of the support plate from one end of the base to the other, the following mechanism drives the gear rack upwards, causing the first gear to rotate 180°. This application allows for flexible switching according to actual testing needs, effectively avoiding resource waste and cost increases caused by redundant double-sided probe mechanisms, and improving the applicability and economy of the equipment.

Description

Technical Field

[0001] This invention relates to the field of PCB probe stations, and more specifically, to a modular PCB probe station. Background Technology

[0002] A PCB probe station is a key device for electrical performance testing and fault analysis of printed circuit boards (PCBs). It achieves signal conduction and parameter measurement by having probes contact test points on the PCB. In existing technology, when double-sided testing of a PCB is required, a common practice is to set independent probe mechanisms on the upper and lower sides of the probe station. The upper probe mechanism contacts the test points on the top surface of the PCB, and the lower probe mechanism contacts the test points on the bottom surface, thus simultaneously completing the acquisition and detection of signals from both sides.

[0003] However, the PCB probe station with the above-mentioned double-sided probe mechanism still has some shortcomings in practical applications. For printed circuit boards that only need to perform single-sided testing, the probe mechanism on one side will be completely idle and cannot be effectively utilized, resulting in a waste of hardware resources. At the same time, the redundant probe mechanism not only increases the overall manufacturing cost of the equipment, but also makes the probe station structure more complex, thereby increasing the difficulty of daily maintenance and operating costs, and reducing its practicality.

[0004] Therefore, we have made improvements to this by proposing a modular PCB probe station. Summary of the Invention

[0005] The purpose of this invention is to address the problem that in existing PCB probe stations, when using double-sided probe mechanisms to inspect printed circuit boards with only one side, one side of the probe mechanism is idle and cannot be effectively utilized, resulting in a waste of hardware resources. At the same time, the redundant probe mechanism not only increases the overall manufacturing cost of the equipment, but also complicates the probe station structure, thereby increasing the difficulty of daily maintenance and operating costs.

[0006] To achieve the above-mentioned objectives, the present invention provides a modular PCB probe station to improve the aforementioned problems.

[0007] The application is as follows: A modular PCB probe station includes a frame on which a platform is mounted. Probe mechanisms are mounted on both sides of the platform via first sliding mechanism modules. A base is mounted on the platform between the two sliding mechanisms. A support plate is slidably mounted on the side of the base. A flip shaft is rotatably mounted on the top of the support plate. A clamping assembly for holding a PCB board is provided at the inner end of the flip shaft. A first gear is mounted at the outer end of the flip shaft. A gear rack meshing with the first gear is mounted on the outer side of the support plate. A following mechanism is provided between the bottom of the support plate and the base. During the movement of the support plate from one end of the base to the other, the following mechanism drives the gear rack to move upward, causing the first gear to rotate 180°.

[0008] As a preferred technical solution of this application, the base has a mounting cavity in the middle, a lead screw is rotatably mounted in the mounting cavity, a threaded seat is adapted to be mounted on the lead screw, and connecting rods are fixed at both ends of the threaded seat. First sliding slots are opened on both sides of the base, and the connecting rods pass through the first sliding slots and are fixedly connected to the support plate.

[0009] As a preferred technical solution of this application, a roller is rotatably installed on the connecting rod at the first sliding groove, and an installation plate for connecting and fixing the support plate is detachably installed on the outer end of the connecting rod.

[0010] As a preferred technical solution of this application, the accompanying mechanism includes a limiting plate fixedly installed on the bottom side of the base, an inclined linear groove is provided on the limiting plate, a connecting shaft is installed at the bottom of the toothed rack, and a roller bearing extending into the linear groove is installed at the inner end of the connecting shaft.

[0011] As a preferred technical solution of this application, the bottom of the support plate is provided with a vertical second sliding groove, the inner end of the connecting shaft passes through the second sliding groove and is equipped with a roller bearing that slides with the linear groove, and the top of the support plate is equipped with a guide kit for the vertical movement of the toothed row.

[0012] As a preferred technical solution of this application, the clamp assembly includes a mounting connector, an H-shaped hinge seat is fixedly fixed to the inner side of the connector, a clamping shaft is rotatably mounted in both the upper and lower openings of the H-shaped hinge seat, a clamping plate is mounted on the clamping shaft, a second gear is mounted on the end of the clamping shaft extending to the side of the H-shaped hinge seat, a piston cylinder is fixedly mounted on the side of the H-shaped hinge seat, and a toothed rod that meshes with the second gear is mounted on the piston cylinder.

[0013] As a preferred technical solution of this application, the connecting seat is provided with a pair of air passages, the inner ports of the two air passages are respectively connected to the two piston cylinders, the outer ports of the two air passages are located at the end of the connecting shaft and are arranged symmetrically, a pneumatic connector is fixed on the outer side of the support plate, the inner end of the pneumatic connector has an air inlet that is connected to one of the air passage ports, and the outer end of the pneumatic connector is connected to an external air source through an air pipe.

[0014] As a preferred technical solution of this application, a U-shaped block with a horizontally inward opening is fixed on the top of the support plate, the pneumatic connector is fixedly installed on the U-shaped block, and the flipping shaft is coaxial with the pneumatic connector.

[0015] As a preferred technical solution of this application, the inner end of the clamping plate has a connecting part adapted to the clamping shaft, and a rubber buffer pad is fixed on the clamping side of the clamping plate.

[0016] As a preferred technical solution of this application, the middle part of both ends of the base is also provided with a pneumatic adsorption seat, and the pneumatic adsorption seat is provided with an adsorption hole. Both adsorption seats are located on the outer side of the support plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. By setting a support plate that performs linear motion on the base, and setting a flipping shaft on the support plate with a gear mounted on the flipping shaft, and setting a gear rack and a following mechanism on the support plate, the gear rack performs linear motion to drive the first gear to rotate 180 degrees during the process of driving the support plate to move from one end of the base to the other, thereby flipping the clamped PCB board and facilitating double-sided sequential inspection. Correspondingly, when inspecting a PCB board that requires single-sided inspection, there is no need to control the movement of the support plate. The movement can be flexibly switched according to the actual inspection requirements, effectively avoiding the resource waste and cost increase caused by redundant double-sided probe mechanism settings, and improving the applicability and economy of the equipment.

[0018] 2. By providing a pair of air passages on the connector, the inner ports of the two air passages are connected to two piston cylinders respectively, and the outer ports of the two air passages are connected to the air inlet of the pneumatic connector. When the flip shaft drives the clamp assembly to rotate 180°, one air passage originally connected to the pneumatic connector will be closed, while the port of the other air passage will rotate to the position opposite to the air inlet and automatically connect. That is, no matter which side of the PCB board is facing up, the piston cylinder corresponding to the upper clamping plate is always connected to the air source. By controlling the air supply and cut-off of the air source, the gear on the piston cylinder can be driven to move, thereby driving the transmission gear and clamping shaft to rotate, so that the upper clamping plate flips up and opens, making it convenient for operators to safely and easily pick up and put down the PCB board. The lower clamping plate remains horizontal and is used to support the placed PCB board, improving the practicality of the probe station. Attached Figure Description

[0019] Figure 1 A schematic diagram showing the structure of the modular PCB probe station provided in this application, where the base and frame are separated; Figure 2 A schematic diagram of the base of the modular PCB probe station provided in this application; Figure 3 A schematic diagram of the lead screw and connecting rod of the modular PCB probe station provided in this application; Figure 4 This is a schematic diagram of the inner structure of the support plate of the modular PCB probe station provided in this application; Figure 5 A schematic diagram of the outer side of the support plate of the modular PCB probe station provided in this application; Figure 6 A schematic diagram of the fixture assembly for the modular PCB probe station provided in this application; Figure 7 A schematic diagram of the pneumatic connector of the modular PCB probe station provided in this application; Figure 8 This is a schematic diagram of the limiting plate of the modular PCB probe station provided in this application.

[0020] The image shows: 100. Frame; 101. Machine base; 102. First slide mechanism; 103. Probe mechanism; 200. Base; 201. Lead screw; 202. Threaded seat; 203. Connecting rod; 204. First sliding groove; 205. Roller; 206. Mounting plate; 300. Support plate; 3001. Second sliding groove; 301. Tilting shaft; 302. First gear; 303. Clamping plate; 3031. Connecting seat; 3032. H-shaped hinge seat; 3033. Clamping shaft; 3034. Second gear; 3035. Piston cylinder; 3036. Gear rack; 3037. Air passage; 304. Gear rack; 305. Limiting plate; 3051. Linear slide; 306. Connecting shaft; 307. Roller bearing; 308. Guide kit; 309. Pneumatic connector; 3091. Air inlet; 3092. Air pipe; 310. U-shaped block; 400, pneumatic adsorption seat; 401, adsorption hole. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] Example: Refer to Figures 1 to 8 As shown, a modular PCB probe station includes a frame 100, on which a platform 101 is mounted. Probe mechanisms 103 are mounted on both sides of the platform 101 via first slide mechanism 102 modules. Preferably, the first slide mechanism 102 modules are mounted on a second slide structure (not labeled in the figure). The first slide mechanism 102 modules cooperate with the second slide structure to allow the probe mechanisms 103 to move along the X and Y axes for PCB board testing. During testing, one end of the probe mechanism 103 is connected to an external testing instrument (such as an LCR bridge, multiplexer tester, etc.) via a coaxial cable, while the other end is contacted by a precision probe at the test point to sequentially collect electrical parameters such as contact resistance, insulation resistance, and capacitance. This is a mature existing technology and will not be elaborated upon here.

[0024] To address the issues of resource waste, increased costs, and structural complexity caused by the idleness of the existing double-sided probe mechanism 103 in practical applications, a base 200 is specifically installed on the machine tool 101 between two sliding mechanisms. A support plate 300 is slidably installed on the side of the base 200, and a flip shaft 301 is rotatably installed on the top of the support plate 300. A clamping assembly for holding the PCB board is provided at the inner end of the flip shaft 301, and a first gear 302 is installed at the outer end of the flip shaft 301. A gear rack 304 that meshes with the first gear 302 is installed on the outer side of the support plate 300. A following mechanism is provided between the bottom of the support plate 300 and the base 200. During the process of the support plate 300 moving from one end of the base 200 to the other end, the following mechanism drives the gear rack 304 to move upward, causing the first gear 302 to rotate 180°.

[0025] By using the accompanying mechanism, the PCB board is placed above the base 200 and its side edges are fixed by the clamping assembly. After the upper surface of the PCB board is inspected, the support plate 300 is driven to move from one end of the base 200 to the other end, causing the flipping shaft 301 to rotate 180°, thus achieving the purpose of flipping the PCB board. This eliminates the need to install multiple sets of probe mechanisms 103 on the machine tool 101 to inspect the upper and lower surfaces of the PCB board separately, thereby improving the applicability and practicality of the probe station.

[0026] Specifically, when only one side of the PCB board needs to be inspected, the operator can fix the PCB board with the clamping assembly and start the probe mechanism 103 located above the machine 101 for inspection. There is no need to drive the support plate 300 to move. At this time, the flip axis 301 and the clamping assembly remain stationary, and the whole equipment works in the conventional single-sided probe station mode.

[0027] When double-sided inspection of a PCB board is required, after the upper surface inspection is completed, the control drive unit causes the support plate 300 to move at a constant speed in a straight line along the base 200 from the initial end to the end. During the movement, the follower mechanism forces the gear rack 304 to move upward relative to the support plate 300, thereby driving the first gear 302 to drive the flip shaft 301 and its clamping assembly and PCB board to rotate synchronously. When the support plate 300 moves to the other end of the base 200, the flip shaft 301 completes a 180° rotation, and the original lower surface of the PCB board flips to the upward position. At this time, the other side can be inspected by the same set of probe mechanisms 103. Thus, this probe station only needs to set a set of probe mechanisms 103 on one side (above) of the machine 101 to flexibly complete double-sided inspection. For PCB boards that only require single-sided inspection, there is no need to drive the support plate 300 to move, and the probe mechanism 103 can still be used normally.

[0028] Through the combination of the above structures, flexible switching between single-sided and double-sided detection modes is achieved, effectively avoiding the waste of hardware resources and increased equipment manufacturing costs caused by the redundant setting of the double-sided probe mechanism 103. At the same time, the structure is simplified, the difficulty of daily maintenance and operating costs are reduced, and the practicality and economy of the probe station are significantly improved.

[0029] Preferably, the base 200 has a mounting cavity in the middle, and a lead screw 201 is rotatably mounted in the mounting cavity. A threaded seat 202 is adapted to be mounted on the lead screw 201. Connecting rods 203 are fixed at both ends of the threaded seat 202. First sliding slots 204 are opened on both sides of the base 200. The connecting rods 203 pass through the first sliding slots 204 and are fixedly connected to the support plate 300. The lead screw 201 is driven to make intermittent forward and reverse movements by a driving component (such as a servo motor or stepper motor, not labeled in the figure) installed in the base 200. During the unidirectional rotation of the lead screw 201, the threaded seat 202, the connecting rods 203 and the support plate 300 are driven to move linearly along the sliding slot seat, so that the support plate 300 moves from the base. The purpose of moving from one end of the base 200 to the other is to achieve the reciprocating linear motion of the support plate 300 at the end of the base 200 by rotating the lead screw 201 in both directions. A roller 205 is rotatably mounted on the connecting rod 203 at the first sliding groove 204. An mounting plate 206 for connecting and fixing the support plate 300 is detachably mounted on the outer end of the connecting rod 203, so that the sliding friction between the connecting rod 203 and the edge of the guide groove is transformed into rolling friction, which effectively reduces the motion resistance, reduces wear, and improves the transmission efficiency and long-term operation stability. The mounting plate 206 is fixed to the connecting rod 203 and the support plate 300 respectively by bolts or other detachable connection methods, which facilitates the disassembly, replacement and maintenance of parts.

[0030] Preferably, the accompanying mechanism includes a limiting plate 305 fixedly installed on the bottom side of the base 200. The limiting plate 305 has an inclined linear groove 3051. A connecting shaft 306 is installed at the bottom of the gear rack 304. A roller bearing 307 extending into the linear groove 3051 is installed at the inner end of the connecting shaft 306. A vertical second sliding groove 3001 is opened at the bottom of the support plate 300. The inner end of the connecting shaft 306 passes through the second sliding groove 3001 and is fitted with a roller bearing 307 that slides with the linear groove 3051. A guide kit 308 for vertical movement of the gear rack 304 is installed at the top of the support plate 300.

[0031] In specific implementation, the limiting plate 305 is fixed to the lower side wall of the base 200, and the linear slide groove 3051 on it is inclined as a whole, that is, the slide groove has different heights at different positions in the length direction of the base 200. The connecting shaft 306 extends horizontally, and its inner end passes through the second sliding groove 3001 at the bottom of the support plate 300 and enters the linear slide groove 3051 of the limiting plate 305. It forms a rolling fit with the linear slide groove 3051 through the roller bearing 307. The gear rack 304 is fixedly installed on the upper end of the connecting shaft 306. When the support plate 300 drives the connecting shaft 306 to move horizontally, the roller bearing 307 is forced to move upward in the inclined linear slide groove 3051, thereby pushing the gear rack 304 to rise vertically in the guide kit 308 through the connecting shaft 306, thereby driving the rotating gear to rotate. When the support plate 300 completes the journey from one end of the base 200 to the other end, the driving rotating gear of the gear rack 304 rotates half a revolution. The structure is compact and the operation is reliable.

[0032] It is understandable that the purpose of designing the support plate 300 to move from one end of the base 200 to the other is to clamp the side edge of the PCB board through the clamping assembly, so that the PCB board is always located in the area above the base 200 during the PCB board flipping process, avoiding spatial interference or obstruction of the PCB board flipping process by equipment components such as the base 200, the slide mechanism or the probe mechanism 103; correspondingly, when flipping the PCB board, the probe mechanism 103 can be driven to move to both sides of the base 200 through the corresponding slide mechanism.

[0033] Preferably, the clamping assembly includes a mounting connector 3031, an H-shaped hinge 3032 fixed to the inner side of the connector 3031, and a clamping shaft 3033 rotatably mounted in both the upper and lower openings of the H-shaped hinge 3032. A clamping plate 303 is mounted on the clamping shaft 3033, and the two clamping plates 303 are arranged opposite each other for clamping the edges of the PCB board. The inner end of the clamping plate 303 has a connecting part adapted to the clamping shaft 3033. A rubber buffer pad is fixed to the clamping side of the clamping plate 303. The rubber buffer pad can be made of elastic materials such as polyurethane or silicone, and its surface can be further provided with anti-slip textures to increase the friction between the clamping plate 303 and the edge of the PCB board, preventing the PCB board from slipping during inspection or flipping, and also serving to... To buffer the impact and prevent excessive clamping force from damaging the PCB board, a second gear 3034 is installed on the end of the clamping shaft 3033 extending to the side of the H-shaped hinge seat 3032. The second gears 3034 on the two clamping shafts 3033 are independent of each other. A piston cylinder 3035 is fixedly installed on the side of the H-shaped hinge seat 3032. There are two piston cylinders 3035, each corresponding to one of the two second gears 3034. A gear rod 3036 that meshes with the second gear 3034 is installed on the piston cylinder 3035. When the piston cylinder 3035 drives the gear rod 3036 to make linear reciprocating motion, the clamping shaft 3033 and the clamping plate 303 are driven to rotate around the axis through the transmission gear, thereby realizing the opening or closing action of the corresponding clamping plate 303.

[0034] Preferably, the connecting seat 3031 has a pair of air passages 3037. The inner ports of the two air passages 3037 are respectively connected to the two piston cylinders 3035. The outer ports of the two air passages 3037 are located at the end of the connecting shaft 306 and are arranged symmetrically. A pneumatic connector 309 is fixed to the outer side of the support plate 300. The inner end of the pneumatic connector 309 has an air inlet 3091 that is connected to one of the air passages 3037. When the flip shaft 301 drives the clamp assembly to rotate 180 degrees... After °, one air passage 3037 that was originally connected to the pneumatic connector 309 will be closed, while the port of the other air passage 3037 will rotate to the position opposite to the air inlet 3091 and automatically connect. The outer end of the pneumatic connector 309 is connected to an external air source through the air pipe 3092. The top of the support plate 300 is fixed with a U-shaped block 310 with the opening facing inward. The pneumatic connector 309 is fixedly installed on the U-shaped block 310. The flip shaft 301 is coaxial with the pneumatic connector 309.

[0035] In practice, regardless of which side of the PCB board is facing up, the piston cylinder 3035 corresponding to the upper clamping plate 303 is always connected to the air source. By controlling the supply and cut-off of the air source, the gear 3036 on the piston cylinder 3035 can be driven to move, thereby driving the transmission gear and clamping shaft 3033 to rotate, so that the upper clamping plate 303 flips up and opens, making it easy for operators to safely and conveniently pick up and put down the PCB board. The lower clamping plate 303 remains in a horizontal state to support the placed PCB board.

[0036] Preferably, the base 200 also has a pneumatic adsorption seat 400 at the middle of both ends. The pneumatic adsorption seat 400 has an adsorption hole 401. Both adsorption seats are located on the outer side of the support plate 300. When the support plate 300 moves to one end, the PCB board moves to that end. At this time, the other edge or bottom of the PCB board can be flipped over to cover the corresponding pneumatic adsorption seat 400. The adsorption hole 401 generates suction through the external negative pressure air source, which can firmly adsorb the edge of the PCB board onto the upper surface of the adsorption seat. This provides a stable and flat support platform for the probe mechanism 103 to perform accurate electrical detection, effectively avoiding the problem of poor probe contact caused by the PCB board being suspended or shaking, and further ensuring the detection accuracy and reliability of the detection results.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the scope of the patent. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this invention.

Claims

1. A modular PCB probe station, comprising a frame (100), wherein a stage (101) is mounted on the frame (100), and probe mechanisms (103) are mounted on both sides of the stage (101) via a first sliding mechanism (102) module, characterized in that, A base (200) is installed on the machine base (101) between the two slide mechanisms. A support plate (300) is slidably installed on the side of the base (200). A flip shaft (301) is rotatably installed on the top of the support plate (300). A clamping assembly for clamping the PCB board is provided at the inner end of the flip shaft (301). The outer end of the flipping shaft (301) is equipped with a first gear (302), and the outer side of the support plate (300) is equipped with a gear rack (304) that meshes with the first gear (302). A following mechanism is provided between the bottom of the support plate (300) and the base (200). During the process of the support plate (300) moving from one end of the base (200) to the other end, the following mechanism drives the gear rack (304) to move upward and drives the first gear (302) to rotate 180°.

2. A modular PCB probe station according to claim 1, characterized in that, The base (200) has a mounting cavity in the middle, and a lead screw (201) is rotatably mounted in the mounting cavity. A threaded seat (202) is adapted to be mounted on the lead screw (201). A connecting rod (203) is fixed at both ends of the threaded seat (202). A first sliding groove (204) is opened on both sides of the base (200). The connecting rod (203) passes through the first sliding groove (204) and is fixedly connected to the support plate (300).

3. A modular PCB probe station according to claim 2, characterized in that, A roller (205) is rotatably mounted on the connecting rod (203) at the first sliding groove (204), and an mounting plate (206) for connecting and fixing the support plate (300) is detachably mounted on the outer end of the connecting rod (203).

4. A modular PCB probe station according to claim 3, characterized in that, The accompanying mechanism includes a limiting plate (305) fixedly installed on the bottom side of the base (200). An inclined linear groove (3051) is provided on the limiting plate (305). A connecting shaft (306) is installed at the bottom of the toothed rack (304). A roller bearing (307) extending into the linear groove (3051) is installed at the inner end of the connecting shaft (306).

5. A modular PCB probe station according to claim 4, characterized in that, The bottom of the support plate (300) is provided with a vertical second sliding groove (3001). The inner end of the connecting shaft (306) passes through the second sliding groove (3001) and is equipped with a roller bearing (307) that slides with the linear slide groove (3051). The top of the support plate (300) is equipped with a guide kit (308) for the vertical movement of the toothed rack (304).

6. A modular PCB probe station according to claim 5, characterized in that, The clamp assembly includes a mounting connector (3031), an H-shaped hinge seat (3032) fixed on the inner side of the connector (3031), a clamping shaft (3033) rotatably mounted in both the upper and lower openings of the H-shaped hinge seat (3032), a clamping plate (303) mounted on the clamping shaft (3033), a second gear (3034) mounted on the end of the clamping shaft (3033) extending to the side of the H-shaped hinge seat (3032), a piston cylinder (3035) fixedly mounted on the side of the H-shaped hinge seat (3032), and a rack (3036) meshing with the second gear (3034) mounted on the piston cylinder (3035).

7. A modular PCB probe station according to claim 6, characterized in that, The connecting seat (3031) is provided with a pair of air passages (3037). The inner ports of the two air passages (3037) are respectively connected to the two piston cylinders (3035). The outer ports of the two air passages (3037) are located at the end of the connecting shaft (306) and are arranged symmetrically. The outer side of the support plate (300) is fixed with a pneumatic connector (309). The inner end of the pneumatic connector (309) has an air inlet (3091) that is connected to one of the air passages (3037) ports. The outer end of the pneumatic connector (309) is connected to an external air source through an air pipe (3092).

8. A modular PCB probe station according to claim 7, characterized in that, The top of the support plate (300) is fixed with a U-shaped block (310) with the opening facing inward. The pneumatic connector (309) is fixedly installed on the U-shaped block (310). The flipping shaft (301) is coaxial with the pneumatic connector (309).

9. A modular PCB probe station according to claim 8, characterized in that, The inner end of the clamping plate (303) has a connecting part adapted to the clamping shaft (3033), and a rubber buffer pad is fixed on the clamping side of the clamping plate (303).

10. A modular PCB probe station according to claim 9, characterized in that, The base (200) also has a pneumatic adsorption seat (400) at the middle of both ends. The pneumatic adsorption seat (400) has an adsorption hole (401) and both adsorption seats are located on the outer side of the support plate (300).

Images