Horizontal flying probe testing machine
By designing a horizontal flying probe tester, the X-axis and Y-axis linear motors are independently controlled. Combined with a suction cup worktable, this solves the problem that traditional flying probe testers cannot adapt to various FPC flexible circuit board models, thus improving testing accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU WANGTONGDA ELECTRONICS CO LTD
- Filing Date
- 2025-01-20
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional flying probe testing machines cannot simultaneously and accurately test multiple FPC flexible boards of different models, and the vibration and friction of traditional lead screws affect the testing accuracy.
It adopts a horizontal flying probe testing machine structure, using X-axis linear motors and Y-axis linear motors to independently control the movement of the flying probe testing module, combined with a suction cup worktable to adsorb multiple FPC flexible boards, reducing the vibration and friction of traditional lead screws.
It enables adaptive testing of FPC flexible boards of various shapes and specifications, improves testing accuracy and stability, and reduces control difficulty and cost.
Smart Images
Figure CN224231900U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flying probe testing for circuit boards, and in particular to a horizontal flying probe testing machine. Background Technology
[0002] Traditional flying probe testers are typically vertical testers. During testing, the circuit board is clamped vertically, and the flying probe moves horizontally to make vertical contact with the contacts on the circuit board to perform open / short circuit detection, or Kelvin testing. Because FPC flexible circuit boards are soft and easily deformed, the fixtures of traditional flying probe testers often cause the FPC flexible circuit board to deform and bend during clamping. Therefore, the fixtures of traditional flying probe testers can easily damage the FPC circuitry.
[0003] Furthermore, the size of the FPC boards being tested is limited by the size of the worktable. When testing large or extra-large FPC boards, the edges of the FPC boards will deform and bend outside the worktable, resulting in damage to the FPC board circuitry. Therefore, custom-made tooling is required based on the shape and size of the FPC boards. This makes it difficult for traditional flying probe testers to adapt to large FPC boards of various sizes.
[0004] Traditional flying probe testing machines typically use high-precision lead screws to drive the motion mechanism and ensure accurate prong displacement for precise alignment with solder joints. Multiple lead screw nuts on the lead screw move synchronously, allowing each flying probe testing module to move synchronously and test each circuit board. Because the displacement speed and direction of the lead screw nuts are the same, the flying probe testing modules can only move synchronously. This means that each flying probe testing module cannot be independently controlled, making it difficult to separately control the motion accuracy of each module. Furthermore, the long, high-precision lead screws are expensive, and the vibration and friction generated during operation inevitably reduce the accuracy of the flying probe movement.
[0005] Therefore, this utility model proposes a horizontal flying probe testing machine to solve the problem that existing flying probe testing machines cannot simultaneously and accurately test multiple FPC flexible boards of different models, and avoids the impact of vibration and friction from traditional lead screw operation on the alignment accuracy of the flying probe. Utility Model Content
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a horizontal flying probe testing machine, comprising: an upper frame, a lower frame, a middle frame, a suction cup worktable, an upper crossbeam, a lower crossbeam, a longitudinal beam, a flying probe detection module, an X-axis linear motor, and a Y-axis linear motor. The X-axis linear motor includes an X-axis stator and an X-axis mover, and the Y-axis linear motor includes a Y-axis stator and a Y-axis mover. The upper frame, middle frame, and lower frame are connected sequentially along the plumb line. The upper ends of the upper crossbeam, upper frame, and middle frame are connected sequentially along the horizontal direction. The lower crossbeam, lower frame, and lower middle frame are connected horizontally at their lower ends. The suction cup worktable is located at the center of the middle frame and has a workpiece placement area. The upper and lower ends of the two longitudinal beams are slidably mounted on the upper and lower crossbeams, respectively. The flying probe detection module is slidably connected to the longitudinal beams one-to-one. The X-axis stator is located on the upper and lower crossbeams, the X-axis mover is located at both ends of the longitudinal beams, the Y-axis stator is located in the middle of the longitudinal beams, and the Y-axis mover is located on the flying probe detection module.
[0007] The horizontal flying probe tester has its flying probes placed horizontally, and the flying probes move horizontally close to the circuit board for testing.
[0008] Preferably, the upper frame, middle frame and lower frame are all made of marble or metal profiles.
[0009] Preferably, the suction cup worktable includes a tabletop, and the tabletop array has suction holes communicating with the interior of the suction cup worktable. The tabletop is made of marble or metal profile.
[0010] Preferably, the flying probe detection module includes a slide table, a Z-axis motion device, a mounting plate, and a detection probe. The slide table, Z-axis motion device, mounting plate, and detection probe are sequentially connected along the positive Z-axis. The slide table is slidably connected to the longitudinal beams in a one-to-one correspondence. The detection probe is horizontally positioned, and one end of the detection probe near the suction cup worktable has a pointed tip, which can be any one of a cone, pyramid, frustum, prism, or hemisphere. The pointed part of the detection probe used to contact the circuit board is a triangular or spherical pointed probe, which can accurately and perpendicularly contact the lines or holes on the circuit board.
[0011] Preferably, a detection space, a first loading / unloading station, and a second loading / unloading station are provided between the lower frame and the upper frame. The first loading / unloading station, the suction cup worktable, the second loading / unloading station, and the flying probe detection module are arranged sequentially around the detection space. Both the first and second loading / unloading stations are equipped with robotic arms, each comprising a robotic arm body, a rotary cylinder, and a vacuum suction cup connected in sequence.
[0012] Preferably, the mounting plate also includes a visual inspection device, which, along with the inspection probe, is respectively disposed at both ends of the mounting plate. The visual inspection device can calibrate the inspection probe to ensure that it is aligned with the solder joint to be tested.
[0013] Preferably, the Z-axis motion device is a linear motor or a linear lead screw module. The Z-axis motion device, the X-axis linear motor, and the Y-axis linear motor are all driven by electrical energy, reducing the difficulty of control.
[0014] Preferably, the upper crossbeam and the upper frame are integrally formed, and the lower crossbeam and the lower frame are integrally formed.
[0015] Preferably, both the upper and lower crossbeams are L-shaped crossbeams, and the upper and lower crossbeams are symmetrically arranged, with the longitudinal section of the lower crossbeam being L-shaped.
[0016] Preferably, a rectangular groove is provided at the center of the surface of the intermediate frame near the flying probe detection module, the platform is covered by the rectangular groove, and an air inlet and an air outlet are provided on the surface of the intermediate frame away from the flying probe detection module. The air inlet and the air outlet communicate with the interior of the rectangular groove.
[0017] The working principle of this invention is as follows: the direction of movement of the two longitudinal beams is determined by the direction of the current flowing through the X-axis movers at both ends. The speed of movement of the two longitudinal beams is determined by the magnitude of the current flowing through the X-axis movers at both ends. By controlling the magnitude and direction of the current flowing through each X-axis mover, the speed and direction of movement of the two longitudinal beams can be controlled independently.
[0018] The direction of movement of the flying probe detection module is determined by the direction of the current flowing through its corresponding Y-axis mover. The speed of movement of the flying probe detection module is determined by the magnitude of the current flowing through its corresponding Y-axis mover. By controlling the magnitude and direction of the current flowing through each Y-axis mover individually, the speed and direction of movement of each flying probe detection module can be controlled independently.
[0019] The beneficial effects of this invention are as follows: The suction cup stage can simultaneously hold multiple different FPC flexible boards, adapting to various shapes and specifications. By controlling the magnitude and direction of the current of each X-axis and Y-axis actuator of the linear motor, multiple flying probe detection modules can move with high precision at different speeds and in different directions, quickly and accurately reaching the test point. Using linear motors reduces vibration and friction associated with traditional lead screw operation, improving the movement accuracy of the flying probes and thus enhancing detection accuracy. Furthermore, the structure is reliable and stable. Attached Figure Description
[0020] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.
[0021] Figure 1 This is a schematic diagram of a structure provided for an embodiment of the present utility model;
[0022] Attached reference numerals: 1: Upper frame; 2: Lower frame; 3: Middle frame; 4: Suction cup worktable; 5: Upper crossbeam; 6: Lower crossbeam; 7: Longitudinal beam; 8: Flying probe detection module; 9: X-axis stator; 10: X-axis mover; 111: Y-axis stator; 12: Y-axis mover; 13: Guide rail. Detailed Implementation
[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0024] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or an intervening element may be present simultaneously. When an element is referred to as "connected to" another element, it can be directly connected to the other element or an intervening element may be present simultaneously. The directional terms used, such as "up," "down," "left," and "right," generally refer to... Figure 1 The directions shown are up, down, left, and right. "Inner" and "outer" refer to the inner and outer parts of a specific outline. "Far" and "near" refer to the distance or proximity relative to a particular component.
[0025] like Figure 1 As shown in the figure, a horizontal flying probe testing machine provided in one embodiment of this utility model includes: an upper frame 1, a lower frame 2, a middle frame 3, a suction cup worktable 4, an upper crossbeam 5, a lower crossbeam 6, a longitudinal beam 7, a flying probe detection module 8, an X-axis linear motor, and a Y-axis linear motor. The X-axis linear motor includes an X-axis stator 9 and an X-axis mover 10, and the Y-axis linear motor includes a Y-axis stator 11 and a Y-axis mover 12. The upper frame 1, the middle frame 3, and the lower frame 2 are connected sequentially along the plumb line, and the upper ends of the upper crossbeam 5, the upper frame 1, and the middle frame 3 are connected sequentially along the horizontal direction. The lower crossbeam 6, lower frame 2, and middle frame 3 are connected horizontally at their lower ends. The suction cup worktable 4 is located at the center of the middle frame 3. The suction cup worktable 4 has a workpiece placement area. The upper and lower ends of the two longitudinal beams 7 are slidably mounted on the upper crossbeam 5 and lower crossbeam 6, respectively. The flying probe detection module 8 is slidably connected to the longitudinal beams 7 in a one-to-one correspondence. The X-axis stator 9 is mounted on the upper crossbeam 5 and lower crossbeam 6. The X-axis mover 10 is mounted on both ends of the longitudinal beams 7. The Y-axis stator 11 is mounted in the middle of the longitudinal beams 7. The Y-axis mover 12 is mounted on the flying probe detection module 8.
[0026] The horizontal flying probe tester has its flying probes placed horizontally, and the flying probes move horizontally close to the circuit board for testing.
[0027] The upper frame 1, the middle frame 3, and the lower frame 2 are all made of marble or metal profiles.
[0028] The suction cup worktable 4 includes a tabletop, and the tabletop array has suction holes that communicate with the interior of the suction cup worktable 4. The tabletop is made of marble or metal profile.
[0029] The flying probe detection module 8 includes a slide table, a Z-axis motion device, a mounting plate, and a detection probe. The slide table, Z-axis motion device, mounting plate, and detection probe are connected sequentially along the positive Z-axis. The slide table is slidably connected to the longitudinal beam 7 in a one-to-one correspondence. The detection probe is horizontally positioned, and the end of the detection probe near the suction cup worktable 4 has a pointed tip. The pointed tip can be any one of a cone, pyramid, frustum, prism, or hemisphere. The pointed part of the detection probe used to contact the circuit board is a triangular or spherical pointed probe, which can accurately and perpendicularly contact the lines or holes on the circuit board.
[0030] A detection space, a first loading / unloading station, and a second loading / unloading station are provided between the lower frame 2 and the upper frame 1. The first loading / unloading station, the suction cup worktable 4, the second loading / unloading station, and the flying probe detection module 8 are arranged sequentially around the detection space. A robot arm is provided in both the first loading / unloading station and the second loading / unloading station. The robot arm includes a robot arm body, a rotary cylinder, and a vacuum suction cup connected in sequence.
[0031] It also includes a visual inspection device, which, along with the inspection probe, is respectively mounted at both ends of the mounting plate. The visual inspection device can calibrate the inspection probe to ensure that the inspection probe is aligned with the solder joint to be tested.
[0032] The Z-axis motion device is a linear motor or a linear lead screw module. The Z-axis motion device, the X-axis linear motor, and the Y-axis linear motor are all driven by electrical energy, reducing the difficulty of control.
[0033] The upper crossbeam 5 is integrally formed with the upper frame 1, and the lower crossbeam 6 is integrally formed with the lower frame 2.
[0034] Both the upper crossbeam 5 and the lower crossbeam 6 are L-shaped crossbeams, and the upper crossbeam 5 and the lower crossbeam 6 are symmetrically arranged. The longitudinal section of the lower crossbeam 6 is L-shaped.
[0035] A rectangular groove is provided at the center of the surface of the intermediate frame 3 near the flying probe detection module 8. The platform is covered by the rectangular groove. An air inlet and an air outlet are provided on the surface of the intermediate frame 3 away from the flying probe detection module 8. The air inlet and air outlet communicate with the interior of the rectangular groove.
[0036] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.
Claims
1. A horizontal flying probe testing machine, characterized in that: include: The system comprises an upper frame, a lower frame, a middle frame, a suction cup worktable, an upper crossbeam, a lower crossbeam, longitudinal beams, a flying probe detection module, an X-axis linear motor, and a Y-axis linear motor. The X-axis linear motor includes an X-axis stator and an X-axis mover, and the Y-axis linear motor includes a Y-axis stator and a Y-axis mover. The upper frame, middle frame, and lower frame are connected sequentially along the plumb line. The upper crossbeam, upper frame, and middle frame are connected sequentially at their upper ends along the horizontal direction. The lower crossbeam, lower frame, and middle frame are connected sequentially at their lower ends along the horizontal direction. The suction cup worktable is located at the center of the middle frame and has a workpiece placement area. The upper and lower ends of the two longitudinal beams are slidably mounted on the upper and lower crossbeams, respectively. The flying probe detection module is slidably connected to each longitudinal beam. The X-axis stator is located on the upper and lower crossbeams, the X-axis mover is located at both ends of the longitudinal beams, the Y-axis stator is located in the middle of the longitudinal beams, and the Y-axis mover is located on the flying probe detection module.
2. The horizontal flying probe testing machine according to claim 1, characterized in that: The upper frame, middle frame, and lower frame are all made of marble or metal profiles.
3. The horizontal flying probe testing machine according to claim 2, characterized in that: The suction cup workbench includes a tabletop, and the tabletop array has suction holes that communicate with the interior of the suction cup workbench. The tabletop is made of marble or metal profile.
4. The horizontal flying probe testing machine according to claim 1, characterized in that: The flying probe detection module includes a slide table, a Z-axis motion device, a mounting plate, and a detection probe. The slide table, Z-axis motion device, mounting plate, and detection probe are connected sequentially along the positive Z-axis direction. The slide table is slidably connected to the longitudinal beam in a one-to-one correspondence. The detection probe is horizontally set, and the end of the detection probe near the suction cup worktable is provided with a tip. The tip can be any one of a cone, pyramid, frustum, prism, or hemisphere.
5. The horizontal flying probe testing machine according to claim 1, characterized in that: A detection space, a first loading / unloading station, and a second loading / unloading station are provided between the lower frame and the upper frame. The first loading / unloading station, the suction cup worktable, the second loading / unloading station, and the flying probe detection module are arranged in sequence around the detection space.
6. The horizontal flying probe testing machine according to claim 1, characterized in that: It also includes a visual inspection device, which and the inspection probe are respectively installed at both ends of the mounting plate.
7. The horizontal flying probe testing machine according to claim 4, characterized in that: The Z-axis motion device is a linear motor or a linear lead screw module.
8. The horizontal flying probe testing machine according to claim 2, characterized in that: The upper crossbeam is integrally formed with the upper frame, and the lower crossbeam is integrally formed with the lower frame.
9. The horizontal flying probe testing machine according to claim 8, characterized in that: Both the upper and lower crossbeams are L-shaped crossbeams, and the upper and lower crossbeams are symmetrically arranged. The longitudinal section of the lower crossbeam is L-shaped.
10. The horizontal flying probe testing machine according to claim 3, characterized in that: A rectangular groove is provided at the center of the surface of the intermediate frame near the flying probe detection module. The platform is covered by the rectangular groove. An air inlet and an air outlet are provided on the surface of the intermediate frame away from the flying probe detection module. The air inlet and air outlet communicate with the interior of the rectangular groove.