Golden finger beveled edge machine board thickness detection assembly

Abstract

The utility model discloses a golden finger beveling machine plate thickness detection assembly, which comprises a first base, a first lifting mechanism is arranged on the first base, two centering displacement detection assemblies are arranged on the side surface of the first lifting mechanism, and the two detection assemblies are respectively a first detection assembly and a second detection assembly. The first detection assembly and the second detection assembly each comprise a second lifting air cylinder, a second support and a probe, the second lifting air cylinders are installed on the side face of the first lifting mechanism, the second supports are installed on piston rods of the second lifting air cylinders, and the probes are fixedly connected to the second supports. High-precision probes are in direct contact with the upper surface and the lower surface of a PCB, thickness data are indirectly obtained in combination with a sensor, automatic separation is achieved after measurement is completed, space is reserved for detection of a next board, the device is fast in takt, high in efficiency and capable of being integrated with a production line, online real-time detection is achieved, manual intervention is reduced, personal errors are reduced, and the production consistency and the product quality control level are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board processing equipment, specifically to a component for detecting the thickness of a gold finger beveled edge machine. Background Technology

[0002] In the manufacturing process of gold finger PCBs, the contact points (i.e., gold fingers) on the board edge need to be machined into bevels at a certain angle to facilitate connector insertion. This machining process is usually completed by a precision beveling machine. Board thickness is a key quality indicator for PCBs, especially in the gold finger area. Insufficient thickness (too thick or too thin) will prevent smooth insertion into the connector slot, causing assembly difficulties for customers, affecting structural strength and electrical connection reliability, potentially leading to poor contact, affecting the consistency of a batch of products, and reducing yield. In traditional manufacturing processes, board thickness inspection is usually performed offline before or after machining (such as using a micrometer or offline measuring instrument). This method has significant drawbacks: it cannot provide real-time feedback on the quality status during machining. By the time an abnormal thickness is detected, a large number of defective products may have already been produced, resulting in a waste of materials and time. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a plate thickness detection component for a gold finger bevel edge machine.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A plate thickness detection component for a beveled edge machine includes a first base, on which a first lifting mechanism is mounted. Two centering displacement detection components are arranged on the side of the first lifting mechanism. The two detection components are a first detection component and a second detection component. Each of the first and second detection components includes a second lifting cylinder, a second bracket, and a probe. The second lifting cylinder is mounted on the side of the first lifting mechanism, and a second bracket is mounted on the piston rod of the second lifting cylinder. The probe is fixedly connected to the second bracket.

[0006] Preferably, the first lifting mechanism includes a first lifting cylinder, a first bracket, a second guide rail, a first slider, a first mounting plate, and a first upright plate. The bottom of the first upright plate is mounted on a first base. The second guide rail is mounted on the side of the first upright plate along the Z-axis. The first slider slides in cooperation with the second guide rail. The first mounting plate is fixedly connected to the first slider. The first lifting cylinder is fixedly connected to the top of the first upright plate. One end of the first bracket is fixedly connected to the first mounting plate, and the other end of the first bracket is fixedly connected to the piston rod of the first lifting cylinder.

[0007] Preferably, a first translation mechanism is provided between the first base and the first upright plate. The first translation mechanism is used to drive the two detection components to move along the X-axis direction. The first translation mechanism includes a first guide rail, a first lead screw, a slide table, and a first motor. The two ends of the first lead screw are fixedly connected to the first base through bearing seats. The first guide rail is fixedly connected to the first base along the X-axis direction. The slide table is slidably engaged with the first guide rail. The first upright plate is fixedly connected to the top of the slide table. The slide table is threadedly engaged with the first lead screw. The first motor is fixedly connected to the first base and is used to drive the first lead screw to rotate.

[0008] Preferably, a second lifting mechanism for driving the first mounting plate to move along the Z-axis is installed on the side of the first upright plate. The second lifting mechanism includes a third motor, a first nut seat, a third bracket, and a first threaded rod. The two ends of the first threaded rod are connected to the side of the first upright plate through bearing seats. The first nut seat is threadedly connected to the first threaded rod. One end of the third bracket is fixedly connected to the first nut seat, and the other end of the third bracket is fixedly connected to the first mounting plate. The third motor is fixedly connected to the side of the first upright plate, and the third motor is connected to the first threaded rod through a coupling.

[0009] Preferably, the first upright plate and the slide are connected by at least two L-shaped corners.

[0010] The beneficial effects of this utility model are:

[0011] The board thickness detection component adopts a dual-probe mechanical contact measurement. The high-precision probe (63) directly contacts the upper and lower surfaces of the PCB board, and the thickness data is indirectly obtained by the sensor. This effectively avoids common problems in optical measurement such as surface reflection and material light transmittance interference. After the PCB board is positioned by the conveying mechanism, the cylinder drives the upper and lower probes to contact the board surface at the same time. After the measurement is completed, they are automatically separated to make room for the next board to be detected. The cycle time is fast and the efficiency is high. It can be integrated with the production line to realize online real-time detection, reduce manual intervention, reduce human error, and improve production consistency and product quality control. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure of the first lifting mechanism of this utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the exploded structure;

[0015] In the diagram, 1. First base; 2. First translation mechanism; 21. First guide rail; 22. First lead screw; 23. Slide table; 24. First motor; 3. First lifting mechanism; 31. First lifting cylinder; 32. First bracket; 33. Second guide rail; 34. First slider; 35. First mounting plate; 36. First upright plate; 5. First detection component; 6. Second detection component; 61. Second lifting cylinder; 62. Second bracket; 63. Probe; 7. Second lifting mechanism; 71. Third motor; 72. First nut seat; 73. Third bracket; 74. First threaded rod; 8. L-shaped corner bracket. Detailed Implementation

[0016] like Figures 1-3 As shown, a PCB thickness detection component for a beveled edge machine is provided. Its core working principle involves mechanical contact measurement using two high-precision probes 63, combined with a sensor, to indirectly obtain PCB thickness information. The structure includes a first base 1, on which a first lifting mechanism 3 is mounted. Two centering displacement detection components are arranged on the side of the first lifting mechanism 3: a first detection component 5 and a second detection component 6. Both the first and second detection components are capable of centering displacement. Each component includes a second lifting cylinder 61, a second bracket 62, and probes 63. The second lifting cylinder 61 is mounted on the side of the first lifting mechanism 3, and the second bracket 62 is mounted on the piston rod of the second lifting cylinder 61. 3. Fixedly connected to the second bracket 62, the second lifting cylinder 61 drives the corresponding probe 63 to approach the center of the two along the Z-axis, so that the upper and lower probes 63 abut against the upper and lower sides of the PCB board, thereby detecting the PCB board thickness information. The PCB board is transported to the detection station by a conveying mechanism or fixing device and is located in the predetermined area between the two probes 63 (upper and lower probes 63). The two second lifting cylinders 61 are started at the same time, respectively driving the (upper) probe 63 of the first detection component 5 and the (lower) probe 63 of the second detection component 6 to move towards each other along the Z-axis, that is, to approach the PCB board at the same time. The upper probe 63 moves downward and the lower probe 63 moves upward until they just contact and slightly abut against the upper and lower surfaces of the PCB board respectively. The head of probe 63 is usually very precise to ensure the accuracy of the measurement. Let the displacement of the upper probe 63 be S1 and the displacement of the lower probe 63 be S2. The system knows the absolute distance between the initial positions of the two second lifting cylinders 61 as D. The thickness (T) of the PCB board can be calculated by the formula: T=D-(S1+S2). The two second lifting cylinders 61 move in opposite directions, driving the upper and lower probes 63 to separate and leave the PCB board surface, making room for the removal of the PCB board or the detection of the next board.

[0017] As the supporting foundation of the entire detection assembly, it provides stable and precise linear lifting motion in the Z-axis direction, thereby realizing the coarse adjustment of the height of the detection assembly and adaptability to PCB boards of different thicknesses. The first lifting mechanism 3 includes a first lifting cylinder 31, a first bracket 32, a second guide rail 33, a first slider 34, a first mounting plate 35, and a first upright plate 36. The bottom of the first upright plate 36 is mounted on the first base 1. Two L-shaped brackets 8 are fixedly connected between the first upright plate 36 and the slide table 23. The second guide rail 33 is mounted on the side of the first upright plate 36 along the Z-axis direction. The first slider 34 slides with the second guide rail 33. The first mounting plate 35 is fixedly connected to the first slider 34. The first lifting cylinder 31 is fixedly connected to the top of the first upright plate 36. One end of the first bracket 32 ​​is fixedly connected to the first mounting plate 35, and the other end of the first bracket 32 ​​is fixedly connected to the piston rod of the first lifting cylinder 31. The first lifting cylinder 31 is the power core of the mechanism. When compressed air enters the upper or lower chamber of the cylinder, it pushes the piston rod to extend or retract linearly. This linear motion is directly transmitted through the first bracket 32. One end of the first bracket 32 ​​is fixed to the piston rod, and the other end is fixed to the first mounting plate 35. Therefore, the extension and retraction of the piston rod is directly converted into the up and down movement of the first mounting plate 35. To ensure that the first mounting plate 35 and its load (two detection components) can move smoothly and accurately along the vertical (Z-axis) direction without swaying or tilting, the mechanism is equipped with a precision guiding system. The second guide rail 33 is precisely mounted on the first vertical plate 36 along the Z-axis direction. The first slider 34 and the second guide rail 33 form a sliding pair, and the first mounting plate 35 is fixedly connected to the first slider 34. Therefore, when the first mounting plate 35 is driven by the cylinder, it is forced to move smoothly in a straight line only along the direction of the second guide rail 33, i.e., the Z-axis. This greatly improves the stability and precision of the movement. The first lifting mechanism 3 has a large overall stroke adjustment, while the subsequent second lifting cylinder 61 is responsible for the micron-level precision measurement stroke.

[0018] A first translation mechanism 2 is provided between the first base 1 and the first upright plate 36. The rotational motion of the first motor 24 is precisely and smoothly converted into linear motion of the entire detection assembly (including the first upright plate 36, the first lifting mechanism 3, and the upper and lower probes 63) along the X-axis, thereby realizing flexible adjustment of the measurement point in the horizontal direction. The first translation mechanism 2 is used to drive the two detection assemblies to move along the X-axis. The first translation mechanism 2 includes a first guide rail 21, a first lead screw 22, a slide table 23, and a first motor 24. The two ends of the first lead screw 22 are fixedly connected to the first guide rail 21 through bearing seats. On the first base 1, a first guide rail 21 is fixedly connected to the first base 1 along the X-axis. A slide table 23 is slidably engaged with the first guide rail 21. A first vertical plate 36 is fixedly connected to the top of the slide table 23. The slide table 23 is threadedly engaged with the first lead screw 22. A first motor 24 is fixedly connected to the first base 1. The first motor 24 is used to drive the first lead screw 22 to rotate. In use, the manual control system issues a command, and the first motor 24 (usually a servo motor or stepper motor) starts. The motor output shaft is connected to the first lead screw 22 through a coupling, driving the first lead screw 22. The slide 23 rotates synchronously, and a nut precisely matched to the first lead screw 22 is installed inside the slide 23 (forming a lead screw and nut pair). When the rotating lead screw interacts with the stationary nut, the nut will produce linear motion along the lead screw axis. Since this nut is fixed inside the slide 23, the rotational motion of the lead screw is directly converted into linear motion of the slide 23 along the lead screw axis (i.e., the X-axis). To ensure that the slide 23 only produces linear motion in the X direction and does not rotate, warp, or deviate, the mechanism is equipped with a first guide rail 21. The bottom of the slide 23 is connected to the first slider 34. The first slider 34 is precisely locked onto the first guide rail 21, forming a high-precision sliding guide pair. The guide pair bears the weight (vertical load) from all the components above, as well as the torque and lateral force generated during movement, ensuring that the slide table 23 and all the loads on it move smoothly, stably, and without shaking in a straight line along the X-axis. When the slide table 23 moves in the X-direction, it directly drives the first vertical plate 36, the entire first lifting mechanism 3 mounted on the first vertical plate 36, and the two detection probes 63 to move synchronously and precisely in the X-direction.

[0019] Two lifting structures are provided for users to choose from. One serves as the main lifting drive, replacing or upgrading the original cylinder drive method. The other uses a more precise and stable electric control method to drive the first mounting plate 35 and all the detection components on it, making precise linear lifting movements along the Z-axis (vertical direction). A second lifting mechanism 7 is installed on the side of the first vertical plate 36 to drive the first mounting plate 35 to move along the Z-axis. The second lifting mechanism 7 includes a third motor 71, a first nut seat 72, a third bracket 73, and a first threaded rod 74. The two ends of the first threaded rod 74 are connected by bearings. A seat is connected to the side of the first upright plate 36. The first nut seat 72 is threadedly connected to the first threaded rod 74. One end of the third bracket 73 is fixedly connected to the first nut seat 72, and the other end of the third bracket 73 is fixedly connected to the first mounting plate 35. The third motor 71 is fixedly connected to the side of the first upright plate 36. The third motor 71 is connected to the first threaded rod 74 through a coupling. The control system (such as a PLC) sends motion commands to the third motor 71 (usually a servo motor or a stepper motor). The third motor 71 starts, and its output shaft begins to perform precise and controlled rotational motion. The rotational output of the motor is directly transmitted to the first threaded rod 74 through the coupling, driving it to rotate synchronously. The first nut seat 72 has threads inside that match the first threaded rod 74. The two form a screw-nut pair. When the rotating threaded rod is fixed and cannot move axially (constrained by the bearing seats at both ends), the nut seat that mates with it will produce linear motion along the axial direction of the threaded rod (i.e., the Z-axis direction). The rotational motion of the threaded rod is thus precisely converted into the linear lifting motion of the nut seat. The third bracket 73, as the power transmission rod, is firmly fixed at one end to the first nut seat 72 and at the other end to the first mounting plate 35. The vertical linear motion of the nut seat is transmitted through this rigid third bracket 73, which pushes and pulls the first mounting plate 35 without reservation, causing it to rise and fall together. In order to ensure that the first mounting plate 35 moves strictly vertically along the Z-axis without swaying, tilting, or rotating with the threaded rod, the mechanism relies on a pre-existing precision guiding system—namely, the second guide rail 33 mounted on the first vertical plate 36 and the first slider 34 that cooperates with it (the first mounting plate 35 and the first slider 34 are fixedly connected). The guide rail bears all lateral forces and torques, ensuring that the entire lifting process is smooth, stable, and highly precise. The first mounting plate 35 begins to rise and fall precisely along the Z-axis. Since the two high-precision detection components (the second lifting cylinder 61 and the probe 63) are both mounted on the first mounting plate 35, the entire measuring unit moves together.

Claims

1. A gold finger beveler board thickness detection assembly, characterized in that, The first base (1) is provided with a first lifting mechanism (3) installed on the first base (1). Two center displacement detection components are provided on the side of the first lifting mechanism (3). The two detection components are a first detection component (5) and a second detection component (6). The first detection component (5) and the second detection component (6) each include a second lifting cylinder (61), a second bracket (62) and a probe (63). The second lifting cylinder (61) is installed on the side of the first lifting mechanism (3). The second bracket (62) is installed on the piston rod of the second lifting cylinder (61). The probe (63) is fixedly connected to the second bracket (62).

2. The board thickness detection assembly of claim 1, wherein, The first lifting mechanism (3) includes a first lifting cylinder (31), a first bracket (32), a second guide rail (33), a first slider (34), a first mounting plate (35), and a first upright plate (36). The bottom of the first upright plate (36) is mounted on the first base (1). The second guide rail (33) is mounted on the side of the first upright plate (36) along the Z-axis. The first slider (34) is slidably engaged with the second guide rail (33). The first mounting plate (35) is fixedly connected to the first slider (34). The first lifting cylinder (31) is fixedly connected to the top of the first upright plate (36). One end of the first bracket (32) is fixedly connected to the first mounting plate (35), and the other end of the first bracket (32) is fixedly connected to the piston rod of the first lifting cylinder (31).

3. The board thickness detection assembly of claim 2, wherein, A first translation mechanism (2) is provided between the first base (1) and the first upright plate (36). The first translation mechanism (2) is used to drive the two detection components to move along the X-axis direction. The first translation mechanism (2) includes a first guide rail (21), a first lead screw (22), a slide table (23) and a first motor (24). The two ends of the first lead screw (22) are fixedly connected to the first base (1) through bearing seats. The first guide rail (21) is fixedly connected to the first base (1) along the X-axis direction. The slide table (23) is slidably engaged with the first guide rail (21). The first upright plate (36) is fixedly connected to the top of the slide table (23). The slide table (23) is threadedly engaged with the first lead screw (22). The first motor (24) is fixedly connected to the first base (1). The first motor (24) is used to drive the first lead screw (22) to rotate.

4. The board thickness detection assembly of claim 3, wherein, A second lifting mechanism (7) is installed on the side of the first upright plate (36) to drive the first mounting plate (35) to move along the Z-axis. The second lifting mechanism (7) includes a third motor (71), a first nut seat (72), a third bracket (73) and a first threaded rod (74). The two ends of the first threaded rod (74) are connected to the side of the first upright plate (36) through bearing seats. The first nut seat (72) is threadedly connected to the first threaded rod (74). One end of the third bracket (73) is fixedly connected to the first nut seat (72), and the other end of the third bracket (73) is fixedly connected to the first mounting plate (35). The third motor (71) is fixedly connected to the side of the first upright plate (36), and the third motor (71) is connected to the first threaded rod (74) through a coupling.

5. A board thickness detection assembly for a gold finger beveler as defined in claim 4, wherein At least two L-shaped brackets (8) are connected between the first upright plate (36) and the slide table (23).

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