A four-station circuit board collecting machine

Abstract

The utility model discloses a four station circuit board collecting machine, including conveying device, be located AOI ink -jet printing code reading device above the conveying device, be located mechanical arm one side of the conveying device, be located vacuum suction plate device of the mechanical arm end, be located first OK board storage station of the mechanical arm one side, second OK board storage station, NG board storage station and pad paper station and control device, AOI ink -jet printing code reading device, mechanical arm with control device electricity is connected. The four station circuit board collecting machine of the utility model, through reading on -line AOI ink -jet printing code identification product OK / NG, and through mechanical arm realizes automatic OK / NG and divides the heap and collects the board, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of printed circuit board processing equipment, specifically to a four-station circuit board take-up machine. Background Technology

[0002] In existing technologies, after online AOI (Automated Optical Inspection), PCBs are typically collected manually using adhesive strips. During this collection process, OK / NG sorting is not performed. After AI filtering, PCBs undergo online visual inspection (VRS), achieving a 100% re-inspection rate. Furthermore, the yield rate after AI filtering in online AOI is 80-90%. Therefore, the current PCB collection process is inefficient.

[0003] Therefore, it is necessary to provide an automated plate-collecting mechanism to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a four-station circuit board collecting machine that identifies OK / NG products by reading online AOI inkjet codes and automatically stacks OK / NG boards by a robotic arm, thereby improving work efficiency.

[0005] The technical solution of this utility model is: A four-station circuit board receiving machine includes a conveying device, an AOI inkjet printing device located above the conveying device, a robot arm located on one side of the conveying device, a vacuum suction device located at the end of the robot arm, a first OK board storage station, a second OK board storage station, an NG board storage station and a padding paper station located on one side of the robot arm, and a control device. The AOI inkjet printing device and the robot arm are electrically connected to the control device.

[0006] Furthermore, the conveying device includes a driving device, multiple conveying rollers driven by the driving device, multiple first rollers sleeved on the conveying rollers, and antistatic bars disposed above or on both sides of the conveying rollers, wherein the first rollers are conductive rollers.

[0007] Furthermore, the AOI coding device is one of a barcode scanner, a QR code scanner, or an AI code reader.

[0008] Furthermore, the vacuum suction plate device includes an air passage profile located at the end of the robotic arm, multiple connectors connected to the air passage profile, a vacuum suction cup connected to the connectors, and a first solenoid valve located between the connectors and the vacuum suction cup. The air passage profile is connected to a vacuum pipe, and the first solenoid valve is electrically connected to the control device, whose working state is controlled by the control device.

[0009] Furthermore, the vacuum suction cups are symmetrically distributed on both sides of the air passage profile.

[0010] Furthermore, the vacuum suction plate device also includes multiple vacuum nozzles connected to the air passage profile, and a second solenoid valve is connected between the vacuum nozzles and the air passage profile.

[0011] Furthermore, multiple vacuum nozzles are divided into several groups, symmetrically distributed on both sides of the air passage profile, and each group of vacuum nozzles is equipped with a corresponding second solenoid valve.

[0012] Furthermore, it also includes a clapping device and dual fiber optic sensors. The clapping device includes a first slider and a second slider respectively disposed on both sides of the conveying roller, a power device for driving the first slider and the second slider to move synchronously to both sides or the middle, a plurality of guide posts disposed on the first slider and the second slider, and an upper roller device. The guide posts are distributed between two adjacent conveying rollers. The upper roller device includes a plurality of second rollers, a connecting plate connected to the second rollers, and a cylinder connected to the connecting plate for driving the second rollers to move up and down. The second rollers are located between two adjacent conveying rollers. The dual fiber optic sensor is electrically connected to the controller. The dual fiber optic sensor is arranged back and forth along the circuit board conveying direction to detect whether the circuit board has reached the tapping position and send the detection signal to the controller. The controller controls the working status of the tapping device and the conveying device.

[0013] Furthermore, the power device includes a mounting base, a stepper motor fixed to the mounting base, a first screw connected to the output shaft of the stepper motor, a second screw connected to the first screw, and a linear guide rail. The first screw and the second screw have opposite helical directions. A first slider and a second slider are respectively connected to the first screw and the second screw, and both the first slider and the second slider are slidably connected to the linear guide rail.

[0014] Furthermore, the linear guide rail is provided with two sets of limiting devices for limiting the displacement of the first slider and the second slider, respectively.

[0015] Compared with the prior art, the four-station circuit board receiving machine provided by this utility model has the following advantages: I. The four-station circuit board collecting machine provided by this utility model is equipped with an AOI inkjet printing reading device above the conveying device. This device reads the online AOI inspection results, determines whether the circuit board is an OK board or an NG board, and sends the reading information to the control device. The control device then controls a robotic arm to pick up the corresponding circuit board and store it in the OK board storage station or the NG board storage station. The machine also has an automatic padding paper function, which realizes automatic collection and storage of circuit boards, reduces manual intervention, avoids re-judgment after AOI inspection, and improves work efficiency.

[0016] II. The four-station circuit board receiving machine provided by this utility model includes a vacuum suction device comprising an air passage profile located at the end of the robot arm, multiple connectors connected to the air passage profile, and vacuum suction cups connected to the connectors. Each vacuum suction cup is connected to the connector via a solenoid valve, enabling individual control of each vacuum suction cup. Therefore, the number of vacuum suction cups can be selected according to the product size of the circuit board, making the application more flexible. Preferably, a vacuum nozzle is used in combination with the vacuum suction cup. The vacuum nozzle can compensate for the vacuum leakage problem caused by the influence of components on the surface of the circuit board, thereby preventing the board from falling off.

[0017] Third, the four-station circuit board receiving machine provided by this utility model uses a clapping device to clap the circuit board during the conveying process, so that the circuit board is aligned and does not deviate, thus improving the accuracy of receiving the board; during the conveying process, conductive rollers and antistatic bars are used to remove the static charge generated by the circuit board during the conveying process, thereby improving the product yield.

[0018] IV. The four-station circuit board collecting machine provided by this utility model has two OK board storage stations, which can reduce manual intervention time and improve production efficiency. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a structural schematic diagram of the four-station circuit board take-up machine of this utility model; Figure 2 yes Figure 1 The diagram shows a structural schematic of the four-station circuit board take-up machine from another angle. Figure 3 yes Figure 1 The diagram shows the structure of the conveying device and the clapping device in the four-station circuit board receiving machine. Figure 4 yes Figure 3 A schematic diagram of the central clapping device; Figure 5 yes Figure 4 A schematic diagram of the clapper device from another angle; Figure 6 yes Figure 3 The diagram shows the structure of the upper roller device in the clapping device.

[0021] Figure 7 yes Figure 1The diagram shows the structure of the vacuum suction device in the four-station circuit board receiving machine. Detailed Implementation

[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 in conjunction with the accompanying drawings.

[0023] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding of the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to the following: Figure 1 and Figure 2 ,in Figure 1 This is a structural schematic diagram of the four-station circuit board take-up machine of this utility model; Figure 2 yes Figure 1 The diagram shows a structural schematic of the four-station PCB winding machine from another angle. This utility model's four-station PCB winding machine includes a conveying device 1, an AOI inkjet printing device 2 located above the conveying device, a clapping device 3 located on the conveying device, a robotic arm 4 located on one side of the conveying device, a vacuum suction device 5 located at the end of the robotic arm, a first OK board storage station 6, a second OK board storage station 7, an NG board storage station 8, and a padding paper station 9 located on one side of the robotic arm, and a control device.

[0025] Please refer to the following: Figure 3 ,yes Figure 1 The diagram shows the structure of the conveying device and the plate-tapping device in the four-station circuit board receiving machine. The conveying device 1 includes a drive device (not shown), multiple conveying rollers 11 driven by the drive device, multiple first rollers 12 sleeved on the conveying rollers, and antistatic bars 13 located above or on both sides of the conveying rollers. The first rollers 12 are used to support the circuit boards and prevent them from sagging and jamming. Preferably, along the circuit board conveying direction, the distance between the first rollers on two adjacent conveying rollers is 30-60mm, and the distance between two adjacent first rollers on the same conveying roller is 40-80mm. By optimizing the distance between the first rollers and increasing their density, the sagging of thin circuit boards can be effectively prevented, and jamming during conveying can be avoided. In this embodiment, the first rollers 12 are conductive rollers. The conductive rollers combined with the antistatic bars can remove the static charge generated on the circuit boards during conveying, thereby improving product yield.

[0026] During online AOI inspection, the circuit board's unique ID and the AOI inspection result are printed with inkjet printing. In this embodiment, the AOI inkjet printing reading device 2 is used to read the online AOI inspection results, and the inspection structure is divided into OK and NG. Specifically, the AOI inkjet printing reading device 2 is one of a barcode scanner, a QR code scanner, or an AI barcode reader, selected according to the inkjet printing type.

[0027] The clapping device 3 is located on the conveying device and is used to clasp the circuit board during the conveying process to straighten it. Dual fiber optic sensors (not shown) are installed at the front and rear positions of the circuit board in the conveying direction to detect whether the circuit board has reached the clapping position and send the detection signal to the control device. When the circuit board reaches the clapping position, the control device controls the clapping device to work.

[0028] Please refer to the following: Figure 4 , Figure 5 and Figure 6 ,in Figure 4 yes Figure 3 A schematic diagram of the central clapping device; Figure 5 yes Figure 4 A schematic diagram of the clapper device from another angle; Figure 6 yes Figure 3 The diagram shows the structure of the upper roller device in the clapping device. In this embodiment, the clapping device 3 includes a first slider 31 and a second slider 32 disposed on both sides of the conveying roller, a power device 33 for driving the first slider 31 and the second slider 32 to move synchronously to both sides or the middle, a plurality of guide posts 34 disposed on the first slider 31 and the second slider 32, and an upper roller device 35. The guide posts 34 are distributed between two adjacent conveying rollers, and when the clapping action is performed, the guide posts 34 contact the edge of the circuit board; the upper roller device 35 is used to lift the circuit board during the clapping action to prevent the circuit board from being damaged by friction.

[0029] In this embodiment, the power unit 33 includes a mounting base 331, a stepper motor 332 fixed to the mounting base 331, a first screw 333 connected to the output shaft of the stepper motor 332, a second screw 334 connected to the first screw 333, and a linear guide rail 335. The first screw 333 and the second screw 334 have opposite helical directions. The first slider 31 and the second slider 32 are respectively connected to the first screw 333 and the second screw 334. There are two linear guide rails 335, distributed on both sides of the first slider 31 and the second slider 32, and both the first slider and the second slider are slidably connected to the linear guide rails. When the stepper motor 332 starts, because the first screw 333 and the second screw 334 have opposite helical directions, the first slider and the second slider move synchronously to the sides or the center. During the movement, the first slider and the second slider move along the linear guide rail 335, preventing them from becoming misaligned.

[0030] The upper roller device 35 includes several second rollers 352, a connecting plate 353 connected to the second rollers 352, and a cylinder 354 connected to the connecting plate 352 for driving the second rollers 352 to move up and down. The second rollers 352 are located between two adjacent conveyor rollers. The upper roller device 35 is used to lift the circuit board during the tapping process, preventing damage from friction. In this embodiment, the second rollers 352 are soft rollers, and their rotation direction is perpendicular to the rotation direction of the first roller 23. During conveying, the position of the second rollers 352 is lower than that of the first roller 23.

[0031] In this embodiment, in order to facilitate the synchronous rise of all second rollers 352, preferably, all connecting plates 353 are connected as one unit by a support plate 355, and a cylinder 354 is connected to the support plate 355, thereby driving the second rollers 352 to move up and down by driving the support plate to move up and down.

[0032] Preferably, two sets of limiting devices 36 are provided on the linear guide rail to limit the movement of the first slider 31 and the second slider 32, respectively, to prevent the first slider / second slider from moving beyond its limit and colliding with the circuit board or frame, thereby ensuring the stability of the device operation. In this embodiment, each set of limiting devices 36 includes a first limiting block 361 and a second limiting block 362, which are correspondingly distributed on both sides of the first slider / second slider. Preferably, each set of limiting devices 36 also includes proximity switches 363 correspondingly distributed on both sides of the first slider / second slider. The proximity switches 363 are electrically connected to the controller. When the proximity switches detect that the first slider / second slider is close to the limiting block, the controller controls the stepper motor to stop working. By using the limiting blocks and proximity switches in conjunction, the accuracy of the movement position of the first slider / second slider can be improved.

[0033] In this invention, the dual fiber optic sensors, the power unit of the clapping device, the upper roller device, and the drive unit of the conveying device are all electrically connected to the control device. When the control device receives a signal that the circuit board has reached the clapping position, it controls the drive unit of the conveying device to stop working, and the circuit board stops being conveyed; it also controls the upper roller device to move, lifting the circuit board; then it controls the power unit of the clapping device to move, causing the first slider and the second slider to move towards the center simultaneously until the guide post contacts the edge of the circuit board, and clapping is performed to straighten the circuit board; after the circuit board is straightened, the dual fiber optic sensors send the detection signal to the controller again, and the controller controls the upper roller device to move, driving the circuit board down until the circuit board is supported on the first roller, and then controls the power unit of the clapping device to move, causing the first slider and the second slider to move away from the circuit board simultaneously, moving to both sides, and the circuit board is no longer constrained by the clapping device.

[0034] In this embodiment, the robotic arm 4 is used to grasp the aligned circuit board and transport it to the corresponding storage station. Specifically, the robotic arm can be a six-axis robotic arm, which has the characteristics of higher flexibility and higher control precision.

[0035] In this embodiment, the vacuum suction plate device 5 includes an air passage profile 51 located at the end of the robotic arm, multiple connectors 52 connected to the air passage profile, vacuum suction cups 53 connected to the connectors, and a first solenoid valve 54 located between the connectors and the vacuum suction cups. The air passage profile 51 is connected to a vacuum pipe, and the first solenoid valve 54 is electrically connected to a control device, whose operating state is controlled by the control device. When the first solenoid valve is open, a vacuum is provided to the corresponding vacuum suction cup, which can then be used for suction. When the first solenoid valve is closed, the corresponding vacuum suction cup is disconnected from the vacuum passage, and it cannot perform suction. By controlling the opening and closing of the first solenoid valve, each vacuum suction cup can be individually controlled. Therefore, the number of working vacuum suction cups can be selected according to the product size of the circuit board, making the application more flexible.

[0036] In this embodiment, the vacuum suction cups 53 are symmetrically distributed on both sides of the air passage profile 51, so that the points acting on the circuit board during suction are symmetrically distributed, and the suction action is more stable.

[0037] When electrical components are present at the location corresponding to the vacuum suction cup, vacuum leakage can easily occur, leading to board detachment. To solve this problem, this embodiment uses multiple vacuum nozzles 55 in conjunction with the vacuum suction cup. Specifically, the multiple vacuum nozzles 55 are connected to the air passage profile 51, and a second solenoid valve 56 connects the vacuum nozzles 55 to the air passage profile 51. The second solenoid valve 56 controls the opening and closing of the vacuum nozzles at different locations. Preferably, the multiple vacuum nozzles are divided into several groups, symmetrically distributed on both sides of the air passage profile, with each group of vacuum nozzles corresponding to a second solenoid valve.

[0038] The first OK board storage station 6, the second OK board storage station 7, the NG board storage station 8, and the padding paper station 9 are located on the side of the robot arm 4. Since AOI generally inspects more OK boards than NG boards, setting up dual OK board storage stations can reduce human intervention time. The padding paper station 9 is used to store padding paper, which separates the circuit boards during storage.

[0039] The working principle of this four-station circuit board receiving machine is as follows: The circuit board is transported by a conveyor, and the AOI inkjet printer reads the inkjet code on the circuit board to confirm whether it is an OK board or an NG board, and sends the information of the board to the control device so that the robot arm can be controlled to pick up the circuit board and place it in the corresponding storage position. When the circuit board reaches the tapping position, the tapping device is controlled to tap the circuit board to straighten it. After the circuit board is aligned, it reaches the gripping position and is gripped by the robotic arm. During the gripping process, the opening or closing of the first and second solenoid valves in the vacuum suction device is selected according to the size and structure of the circuit board to prevent the board from falling during the gripping process. The robotic arm picks up the circuit board and stores it in the OK storage station or NG storage station. It also picks up the padding paper stored in the padding paper station and places it on the surface of the circuit board, so that the circuit boards stored in the same storage station before and after are separated by the padding paper. When the number of circuit boards stored at the first OK board storage station or the second OK board storage station reaches the set quantity, they are transported to the next process.

[0040] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, 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 four-station circuit board receiving machine, characterized in that, The device includes a conveying device, an AOI coding reader located above the conveying device, a robotic arm located on one side of the conveying device, a vacuum suction plate device located at the end of the robotic arm, a first OK board storage station, a second OK board storage station, an NG board storage station and a padding paper station located on one side of the robotic arm, and a control device. The AOI coding reader and the robotic arm are electrically connected to the control device.

2. The four-station circuit board receiving machine according to claim 1, characterized in that, The conveying device includes a driving device, multiple conveying rollers driven by the driving device, multiple first rollers sleeved on the conveying rollers, and antistatic bars disposed above or on both sides of the conveying rollers, wherein the first rollers are conductive rollers.

3. The four-station circuit board receiving machine according to claim 1, characterized in that, The AOI coding device is one of a barcode scanner, a QR code scanner, or an AI code reader.

4. The four-station circuit board receiving machine according to claim 1, characterized in that, The vacuum suction plate device includes an air passage profile located at the end of the robotic arm, multiple connectors connected to the air passage profile, a vacuum suction cup connected to the connectors, and a first solenoid valve located between the connectors and the vacuum suction cup. The air passage profile is connected to a vacuum pipe, and the first solenoid valve is electrically connected to the control device, whose working state is controlled by the control device.

5. The four-station circuit board receiving machine according to claim 4, characterized in that, The vacuum suction cups are symmetrically distributed on both sides of the air passage profile.

6. The four-station circuit board receiving machine according to claim 4, characterized in that, The vacuum suction plate device also includes multiple vacuum nozzles connected to the air passage profile, and a second solenoid valve is connected between the vacuum nozzles and the air passage profile.

7. The four-station circuit board receiving machine according to claim 4, characterized in that, Multiple vacuum nozzles are divided into several groups, symmetrically distributed on both sides of the air passage profile, and each group of vacuum nozzles is equipped with a corresponding second solenoid valve.

8. The four-station circuit board receiving machine according to claim 2, characterized in that, It also includes a clapping device and dual fiber optic sensors. The clapping device includes a first slider and a second slider respectively disposed on both sides of the conveying roller, a power device for driving the first slider and the second slider to move synchronously to both sides or the middle, a plurality of guide posts disposed on the first slider and the second slider, and an upper roller device. The guide posts are distributed between two adjacent conveying rollers. The upper roller device includes a plurality of second rollers, a connecting plate connected to the second rollers, and a cylinder connected to the connecting plate for driving the second rollers to move up and down. The second rollers are located between two adjacent conveying rollers. The dual fiber optic sensor is electrically connected to the controller. The dual fiber optic sensor is arranged back and forth along the circuit board conveying direction to detect whether the circuit board has reached the tapping position and send the detection signal to the controller. The controller controls the working status of the tapping device and the conveying device.

9. The four-station circuit board receiving machine according to claim 8, characterized in that, The power unit includes a mounting base, a stepper motor fixed to the mounting base, a first screw connected to the output shaft of the stepper motor, a second screw connected to the first screw, and a linear guide rail. The first screw and the second screw have opposite helical directions. A first slider and a second slider are respectively connected to the first screw and the second screw, and both the first slider and the second slider are slidably connected to the linear guide rail.

10. The four-station circuit board receiving machine according to claim 9, characterized in that, The linear guide rail is equipped with two sets of limiting devices for limiting the displacement of the first slider and the second slider, respectively.

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