A circuit board OPE punching machine

Abstract

The utility model discloses a kind of circuit board OPE punchers, including puncher host computer, with the conveying device of puncher host computer inlet material end convergence, pre-alignment device being located in the conveying device, the pre-alignment device includes rack, be located in the alignment platform of conveying device, be located in the vacuum chuck for the alignment platform of circuit board positioning, for driving the jacking device of alignment platform lifting, for detecting circuit board to position signal sensor, be located in the pressing plate device and image capture unit of rack, with the XYY drive unit of the alignment platform connection, and control device, the vacuum chuck, jacking device, sensor, pressing plate device, image capture unit, XYY drive unit, conveying device respectively with the control device electricity is connected.The utility model's circuit board OPE puncher, pre-alignment processing is carried out before punching, improves the alignment accuracy of circuit board, to improve the yield of punching processing.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, specifically to a circuit board OPE punching machine. Background Technology

[0002] OPE punching is a high-precision punching process in PCB (printed circuit board) manufacturing. It achieves precise drilling by using a positioning target, solving the problem of interlayer misalignment in multilayer boards and ensuring reliable signal transmission.

[0003] Existing punching machines feed circuit boards into the machine for precise alignment, meaning both positioning and alignment are performed inside the machine. This single alignment operation easily introduces positional and angular errors, affecting the yield rate of the circuit boards.

[0004] Therefore, the purpose of this utility model is to provide an OPE punching machine with higher alignment accuracy. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a circuit board OPE punching machine that performs pre-alignment processing before punching, thereby improving the alignment accuracy of the circuit board and thus improving the yield of punching processing.

[0006] The technical solution of this utility model is:

[0007] A circuit board OPE punching machine includes a punching machine main unit, a conveying device connected to the feeding end of the punching machine main unit, and a pre-alignment device disposed on the conveying device. The pre-alignment device includes a frame, an alignment platform disposed on the conveying device, a vacuum chuck disposed on the alignment platform for positioning the circuit board, a lifting device for driving the alignment platform to rise and fall, a sensor for detecting the circuit board's positioning signal, a pressure plate device and an image capture unit disposed on the frame, an XYY drive unit connected to the alignment platform, and a control device. The vacuum chuck, lifting device, sensor, pressure plate device, image capture unit, XYY drive unit, and conveying device are all electrically connected to the control device.

[0008] Furthermore, the conveying device includes a strip conveyor belt, and the strip conveyor belt forms a well opening, with the alignment platform correspondingly located at the well opening; when the circuit board is in the conveying state, the alignment platform is on the same plane as the strip conveyor belt; when the circuit board is in the alignment state, the lifting device lifts the alignment platform, and the circuit board disengages from the conveying device.

[0009] Furthermore, the lifting device is a cylinder.

[0010] Furthermore, the image capture unit includes at least two CCD cameras, an LED light source, and a light guide plate mounted on the LED light source.

[0011] Furthermore, the XYY drive unit includes an X-axis servo motor, a Y1-axis servo motor, and a Y2-axis servo motor.

[0012] Furthermore, the sensor is a photoelectric through-beam sensor.

[0013] Furthermore, the pressure plate device includes a pressure plate cylinder and a pressure block connected to the piston rod of the pressure plate cylinder, and a buffer pad is provided on the side of the pressure block that contacts the circuit board.

[0014] Compared with the prior art, the OPE punching machine for circuit boards provided by this utility model has the following advantages:

[0015] The circuit board OPE punching machine provided by this utility model has a pre-alignment device set before the punching machine main unit to perform pre-alignment processing on the circuit board. After pre-alignment, the circuit board is sent into the punching machine main unit for precise alignment before punching, which improves the alignment accuracy of the circuit board and thus improves the drilling yield. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the OPE punching machine for circuit boards according to this utility model;

[0018] Figure 2 yes Figure 1 The diagram shows the structure of the conveying device in the OPE punching machine for circuit boards.

[0019] Figure 3 yes Figure 1 The diagram shows the connection between the alignment platform and the XYY drive unit in the OPE punching machine for circuit boards.

[0020] Figure 4 This is a schematic diagram of the control section in the circuit board OPE punching machine of this utility model.

[0021] Specific implementation methods

[0022] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, and to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described below.

[0023] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0024] Please refer to the following: Figures 1 to 4 ,in Figure 1 This is a schematic diagram of the OPE punching machine for circuit boards according to this utility model; Figure 2 yes Figure 1 The diagram shows the structure of the conveying device in the OPE punching machine for circuit boards. Figure 3 yes Figure 1 The diagram shows the connection between the alignment platform and the XYY drive unit in the OPE punching machine for circuit boards. Figure 4 This is a schematic diagram of the control section of the circuit board OPE punching machine of this utility model. The circuit board OPE punching machine of this utility model includes a punching machine main unit 1, a conveying device 2 connected to the feeding end of the punching machine main unit 1, and a pre-alignment device 3 disposed on the conveying device. The circuit board completes the alignment and punching operations within the punching machine main unit 1. Its structure can be referred to in the prior art punching machine, and will not be described in detail here.

[0025] The conveying device 2 is used to transport the circuit board into the punching machine main unit 1, and it can be a belt conveyor mechanism. In this embodiment, the conveying device 2 includes a strip conveyor belt 21, and multiple strip conveyor belts are distributed at intervals. At the pre-alignment point, the strip conveyor belts are discontinuous, forming a wellhead 22, and the alignment platform of the pre-alignment device 3 is correspondingly set at the wellhead.

[0026] The pre-alignment device 3 is located in the conveying section, that is, it completes the pre-alignment process before the circuit board enters the punching machine main unit. In this utility model, the pre-alignment device 3 includes a frame 31, an alignment platform 32 connected to the conveying device, a vacuum suction cup 33 on the alignment platform for positioning the circuit board, a lifting device 34 for driving the alignment platform to rise and fall, a sensor 35 for detecting the circuit board's arrival signal, a pressure plate device 36 and an image capture unit 37 on the frame, an XYY drive unit 38 connected to the alignment platform, and a control device 39. The vacuum suction cup 33, the lifting device 34, the sensor 35, the pressure plate device 36, the image capture unit 37, the XYY drive unit 38, and the conveying device 2 are all electrically connected to the control device 39.

[0027] The frame 31 is mounted on the outer edge of the conveying device 2 and has a protective cover, so that the circuit board is conveyed and pre-aligned inside the protective cover, which can avoid the influence of the external environment on the surface quality of the circuit board.

[0028] The alignment platform 32 is used to support the circuit board. A vacuum suction cup 33 is installed on the alignment platform 32 to vacuum-adhere the circuit board and prevent it from shifting. The vacuum suction cup 33 is connected to a vacuum line. When the circuit board reaches the alignment platform, the vacuum generator connected to the vacuum suction cup is activated, and the vacuum suction cup fixes the circuit board to the alignment platform. After the circuit board completes pre-alignment, the vacuum generator stops working. Specifically, the vacuum suction cup and the alignment platform are on the same plane, and the vacuum line connecting the vacuum suction cup passes through the bottom of the alignment platform. The vacuum generator is located below the alignment platform.

[0029] The lifting device 34 is a cylinder. By extending and retracting the cylinder, it drives the alignment platform to rise or fall. When the circuit board reaches the pre-alignment station, the lifting device drives the alignment platform to rise, raising it above the position of the strip conveyor belt, thus detaching the circuit board from the conveyor. After the circuit board completes pre-alignment, the lifting device drives the alignment platform to fall, making the alignment platform flush with the conveyor belt. Under the action of the conveyor, the circuit board is transported to the next station.

[0030] Sensor 35 is used to detect whether the circuit board has reached the pre-alignment position and sends the detection signal to the control device. When the circuit board is detected to have reached the designated position, the control device controls the conveying device to stop working and controls the lifting device to drive the alignment platform to move upward. In this embodiment, sensor 35 is a photoelectric through-beam sensor.

[0031] The pressure plate device 36 is located above the alignment platform 32 and is used to pressure the circuit board during the pre-alignment process to prevent the circuit board from shifting. Specifically, the pressure plate device 36 includes a pressure plate cylinder 361 and a pressure block 362 connected to the piston rod of the pressure plate cylinder 361, and a buffer pad 363 is provided on the side of the pressure block 361 that contacts the circuit board. The pressure block can rotate relative to the piston rod, and the pressure block and buffer pad can rotate when the alignment platform is adjusted to rotate.

[0032] The image capture unit 37, located above the conveying device, is used to capture images of the circuit board. It includes at least two CCD cameras 371, an LED light source 372, and a light guide plate 373 mounted on the LED light source. The light guide plate 373 increases the uniformity of the light source and improves the shooting accuracy of the CCD cameras. The CCD cameras are electrically connected to the control device, sending the captured data to it. The control device compares and analyzes the actual captured image data with preset image information, calculates the positional deviation of the circuit board, and then calculates the coordinate adjustment data of the alignment platform, generating control commands. These control commands are then sent to the XYY drive unit 38.

[0033] The XYY drive unit 38 is connected to the alignment platform 32. Based on received control commands, it drives the alignment platform to move along the X and Y axes, completing the pre-alignment action and ensuring the circuit board's position meets preset conditions. Specifically, the alignment platform 32 is supported above the lifting device 34 by a support base 30. The support base 30 and the lifting device are not rigidly connected, and an X-axis slide rail 301 is provided on the support base. The alignment platform is slidably connected to the X-axis slide rail via a slider.

[0034] The XYY drive unit 38 includes an X-axis servo motor 381, a Y1-axis servo motor 382, ​​and a Y2-axis servo motor 383, with the Y1-axis servo motor 382 and Y2-axis servo motor 383 located at opposite ends on the same side of the alignment platform. The X-axis servo motor 381 drives the alignment platform to move along the X-axis slide rail 301, while the Y1-axis servo motor 382 and Y2-axis servo motor 383 cooperate to achieve movement or rotation in the Y-axis direction. Specifically, when the Y1-axis servo motor 382 and Y2-axis servo motor 383 move synchronously, they push the alignment platform to move along the Y-axis direction; when the Y1-axis servo motor 382 and Y2-axis servo motor 383 move differentially, they achieve rotation of the alignment platform.

[0035] The working principle of this OPE punching machine for circuit boards is as follows:

[0036] Start the conveyor to transport the circuit board;

[0037] The photoelectric through-beam sensor detects the positioning signal of the circuit board in real time. When the circuit board reaches the preset position, the photoelectric through-beam sensor detects the positioning signal of the circuit board and sends the signal to the control device. The control device controls the motor of the conveying device to stop working, and the circuit board slides onto the alignment platform under the action of inertia.

[0038] The control device controls the extension of the cylinder of the lifting device, which drives the alignment platform to rise, causing the circuit board to fall off the conveying device.

[0039] The control device controls the vacuum generator connected to the vacuum chuck to turn on, and the vacuum chuck adsorbs the circuit board to fix it in place.

[0040] The control device controls the action of the pressure plate device. The pressure plate cylinder extends to make the pressure block abut against the surface of the circuit board and press it tightly to prevent the circuit board from shifting.

[0041] The CCD camera of the image capture unit takes a picture of the circuit board and sends the captured image information to the control device. The control device compares and analyzes the received image information with the pre-stored image information, calculates the position deviation of the circuit board, and then calculates the coordinate adjustment data of the alignment platform to form a control command. The control device then sends the coordinate adjustment control command of the alignment platform to the XYY drive unit.

[0042] The X-axis servo motor, Y1-axis servo motor, and Y2-axis servo motor in the XYY drive unit control the alignment platform to move accordingly according to the corresponding control commands, thereby realizing the displacement and angular deflection of the circuit board in the X-axis and Y-axis directions and completing automatic pre-alignment;

[0043] The control device controls the retraction of the pressure plate device, releasing the constraint on the circuit board;

[0044] The control device controls the retraction of the lifting device, and the alignment platform descends, so that the circuit board is supported on the strip conveyor belt;

[0045] Start the motor of the conveyor device to transport the circuit board to the punching machine host. After re-alignment inside the punching machine host, the punching operation is performed.

[0046] The circuit board OPE punching machine provided by this utility model has a pre-alignment device set before the punching machine main unit to perform pre-alignment processing on the circuit board. After pre-alignment, the circuit board is sent into the punching machine main unit for precise alignment before punching, which improves the alignment accuracy of the circuit board and thus improves the drilling yield.

[0047] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A circuit board OPE punching machine, characterized in that, The device includes a punching machine main unit, a conveying device connected to the feeding end of the punching machine main unit, and a pre-alignment device disposed on the conveying device. The pre-alignment device includes a frame, an alignment platform disposed on the conveying device, a vacuum chuck disposed on the alignment platform for positioning the circuit board, a lifting device for driving the alignment platform to rise and fall, a sensor for detecting the circuit board's positioning signal, a pressure plate device and an image capture unit disposed on the frame, an XYY drive unit connected to the alignment platform, and a control device. The vacuum chuck, lifting device, sensor, pressure plate device, image capture unit, XYY drive unit, and conveying device are all electrically connected to the control device.

2. The circuit board OPE punching machine according to claim 1, characterized in that, The conveying device includes a strip conveyor belt, which forms a wellhead, and the alignment platform is correspondingly located at the wellhead. When the circuit board is in the conveying state, the alignment platform is on the same plane as the strip conveyor belt. When the circuit board is in the alignment state, the lifting device lifts the alignment platform, and the circuit board is disengaged from the conveying device.

3. The circuit board OPE punching machine according to claim 1, characterized in that, The lifting device is a cylinder.

4. The circuit board OPE punching machine according to claim 1, characterized in that, The image capture unit includes at least two CCD cameras, an LED light source, and a light guide plate mounted on the LED light source.

5. The circuit board OPE punching machine according to claim 1, characterized in that, The XYY drive unit includes an X-axis servo motor, a Y1-axis servo motor, and a Y2-axis servo motor.

6. The circuit board OPE punching machine according to claim 1, characterized in that, The sensor is a photoelectric through-beam sensor.

7. The circuit board OPE punching machine according to claim 1, characterized in that, The pressure plate device includes a pressure plate cylinder and a pressure block connected to the piston rod of the pressure plate cylinder. A buffer pad is provided on the side of the pressure block that contacts the circuit board.

Images