PCB edge grinding equipment

Abstract

The invention relates to the field of PCB machining equipment, in particular to PCB edge grinding equipment, and aims to solve the problem that the grinding efficiency is low due to the fact that a clamping mechanism is adopted to clamp PCBs one by one to grind the PCBs. The PCB edge grinding equipment comprises a rack, a conveying line is arranged on the rack, and a material taking and grabbing assembly is arranged at the position, located at the starting end of the conveying line, of the rack; a plurality of material grabbing adjusting assemblies are further arranged on the portion, located on the conveying line, of the rack, polishing assemblies are arranged between the adjacent material grabbing adjusting assemblies and between the material taking grabbing and releasing assembly and the material grabbing adjusting assemblies, and the material grabbing adjusting assemblies grab PCBs and adjust the direction so that the polishing assemblies can polish the unpolished edges. The PCB grinding device has the effect of improving the PCB grinding efficiency.

Description

Technical Field

[0001] The present application relates to the field of PCB board processing equipment, and in particular to a PCB board edge grinding equipment. Background Art

[0002] PCB boards are widely used in the electronics manufacturing industry, especially in situations where complex circuit designs and high precision are required. In order to ensure the quality and performance of PCB boards, their edges usually need to be finely polished to remove burrs, sharp edges and other irregularities.

[0003] Among the existing PCB board edge grinding technologies, manual grinding is the most basic method, where workers use handheld grinding tools to grind the edges of PCB boards. This method is highly flexible, but labor-intensive, inefficient, and prone to human errors. Semi-automatic grinding equipment is usually equipped with a fixed fixture and a grinding head. Workers fix the PCB board on the fixture and then start the grinding head for grinding. This method is more efficient than manual grinding, but it still has certain limitations, such as the need to frequently change workstations and adjust fixtures. Most equipment can only grind one edge at a time, which is a cumbersome process and inefficient. Summary of the invention

[0004] In order to improve the grinding efficiency of PCB boards, the present application provides a PCB board edge grinding device.

[0005] The PCB board edge grinding equipment provided in this application adopts the following technical solution: A PCB board edge grinding device comprises a frame, a transmission line is arranged on the frame, a material picking and placing assembly is arranged at the beginning of the transmission line, a plurality of material grabbing and adjusting assemblies are also arranged on the frame located on the transmission line, and grinding assemblies are arranged between adjacent material grabbing and adjusting assemblies, material picking and placing assemblies and material grabbing and adjusting assemblies, and the material grabbing and adjusting assemblies grab the PCB board and adjust the direction so that the grinding assembly grinds the ungrinded edge.

[0006] By adopting the above technical solution, the material picking and placing component places the PCB board on the transmission line, and the PCB board moves along the transportation direction of the transmission line under the action of the transmission line. During the movement, the first edge is first polished. After the polishing is completed, the material grabbing and adjusting component grabs and adjusts the direction of the PCB board to polish the second edge, and then the material grabbing and adjusting component grabs and repeats the above steps, and finally all the edges of the PCB board are polished. This design allows the PCB board to be automatically transmitted and adjusted and polished multiple times to ensure that each edge can be effectively processed; it significantly improves the polishing efficiency of the PCB board, reduces manual intervention, improves the level of production automation, and realizes an efficient and continuous PCB board edge polishing equipment.

[0007] Preferably, the material grabbing adjustment assembly includes an adjustment motor, an adjustment disk and a plurality of adjustment nozzles, the adjustment motor is mounted on a frame, the adjustment disk is mounted on a driving shaft of the adjustment motor, a plurality of adjustment nozzles are mounted on the adjustment disk, and the plurality of adjustment nozzles adsorb and grab the PCB board on the transmission line and rotate the PCB board 90° to adjust the transmission direction of the PCB board.

[0008] By adopting the above technical solution, when the PCB board moves to the bottom of the adjustment nozzle, the adjustment nozzle absorbs the PCB board, and the adjustment motor drives the adjustment disk to rotate 90°, so that the PCB board can achieve angle adjustment; the material grabbing adjustment component realizes accurate grabbing and direction adjustment of the PCB board through the adjustment motor, adjustment disk and several adjustment nozzles, so that the PCB board can automatically complete a 90° rotation on the transmission line, ensuring that each edge can smoothly enter the grinding component for grinding. This not only improves the grinding accuracy of the PCB board, but also significantly improves the grinding efficiency, reduces manual intervention, and reduces labor intensity.

[0009] Preferably, the material grabbing adjustment component also includes an angle detection component, which includes a controller and a number of distance sensors. A detection mounting rod is provided on the frame, and the detection mounting rod is provided along the width direction of the transmission line. A number of the distance sensors are sequentially provided along the length direction of the detection mounting rod; the detection directions of a number of the distance sensors are perpendicular to the width direction of the transmission line, a number of the distance sensors and the adjustment motor are electrically connected to the controller, a number of the distance sensors detect the distance between the PBC board and the distance sensor, and send a distance signal to the controller, the controller receives a number of distance signals to determine the angle of the skew angle between the PCB board and the transmission direction of the transmission line, controls the adjustment motor to start, and rotates the PCB board after deducting or adding the angle of the skew angle, so that the edge of the PCB board is parallel to the transmission direction of the transmission line.

[0010] By adopting the above technical solution, the angle detection component can monitor the position deviation of the PCB board in real time. For some PCB boards that deviate during the transmission of the transmission line, the controller can accurately calculate the skew angle between the PCB board and the transmission direction of the transmission line. The adjustment motor adjusts the rotation angle of the PCB board according to the angle to ensure that the edge of the PCB board can remain parallel to the transmission direction of the transmission line after adjustment by the adjustment motor, thereby improving the grinding accuracy and efficiency.

[0011] Preferably, the material grabbing adjustment assembly also includes a plurality of adjustment mounting rods, which are sequentially mounted on the adjustment disk and are fanned out from the adjustment disk toward the direction of the transmission line; and a plurality of adjustment nozzles are mounted on each of the adjustment mounting rods.

[0012] By adopting the above technical solution, the design of the adjustment mounting rod enables the adjustment nozzle to adsorb and adjust the PCB board at different positions, thereby improving the flexibility and accuracy of the PCB board position adjustment, thereby ensuring that the edge of the PCB board can accurately enter the grinding assembly for efficient grinding. At the same time, it is suitable for PCB boards of different sizes, ensuring that large-sized PCB boards can be stably adsorbed by the adjustment nozzle.

[0013] Preferably, an adjustment position rod is provided between each of the adjustment nozzles and the adjustment mounting rod, the adjustment position rod is slidably installed on the adjustment mounting rod along the length direction of the adjustment mounting rod, and the adjustment nozzle is installed at one end of the adjustment position rod away from the adjustment mounting rod.

[0014] By adopting the above technical solution, an adjustment position rod is provided between each adjustment nozzle and the adjustment mounting rod, and the adjustment position rod is slidably installed along the length direction of the adjustment mounting rod, so that the adjustment nozzle can be flexibly moved on the adjustment mounting rod, thereby adapting to PCB boards of different sizes. The adjustment nozzle is installed at the end of the adjustment position rod away from the adjustment mounting rod, ensuring that the nozzle can accurately absorb and adjust the position of the PCB board, thereby improving the accuracy and stability of the grinding process.

[0015] Preferably, the position adjustment rod can adjust the angle between itself and the adjustment installation rod.

[0016] By adopting the above technical solution, the position adjustment rod can adjust the angle between itself and the adjustment mounting rod, so that the adjustment nozzle can more flexibly adapt to PCB boards of different sizes and shapes, improve the accuracy of grasping and adjustment, and thus further improve the grinding quality and efficiency of the PCB boards.

[0017] Preferably, the transmission line includes a transmission motor and a plurality of rollers, the transmission motor is mounted on a frame, the plurality of rollers are arranged in sequence along the length direction of the frame, the driving shaft of the transmission motor passes through the frame and is connected to one of the rollers, a transmission belt is tensioned between the rollers at the beginning and the end of the frame, and the plurality of rollers are in contact with the transmission belt.

[0018] By adopting the above technical solution, the design of the transmission line realizes efficient and stable transmission of PCB boards, ensures the stability and accuracy of PCB boards during transmission, and thus improves the working efficiency and reliability of the entire grinding equipment. Specifically, the combined design of the transmission motor and the roller enables the PCB board to move smoothly on the transmission line, while the tensioning design of the transmission belt ensures the stability of the PCB board during transmission, avoiding grinding quality problems caused by unstable transmission.

[0019] Preferably, expansion rollers are provided at the beginning and the end of the frame, and the transmission belt is tensioned on the expansion rollers; the frame is provided with a lifting assembly below each material grabbing adjustment assembly, and the lifting assembly controls multiple rollers located directly below the material grabbing adjustment assembly to descend synchronously; the minimum distance between the adjustment nozzle and the roller is equal to the thickness of the PCB board, and the lifting assembly and the adjustment nozzle are started in sequence. When the adjustment nozzle is started, the distance between the adjustment nozzle and the roller is greater than the thickness of the PCB board and less than the sum of the thickness of the PCB board and the suction range of the adjustment nozzle.

[0020] By adopting the above technical solution, the expansion rollers set at the beginning and end of the frame keep the transmission belt in a good tension state, ensuring the stability of the PCB board during the transmission process. When the material grabbing adjustment component is started, the lifting component first controls the multiple rollers to descend synchronously, thereby releasing the PCB board, so that the adjustment nozzle can accurately adsorb and adjust the direction of the PCB board. The minimum distance between the adjustment nozzle and the roller is designed to be the thickness of the PCB board to ensure that the PCB board will not be damaged during the adjustment process. At the same time, when the adjustment nozzle is started, the distance from the roller is greater than the thickness of the PCB board but less than the sum of the thickness of the PCB board and the suction range of the adjustment nozzle, ensuring that the adjustment nozzle can effectively adsorb the PCB board without collision, thereby improving the grinding efficiency and quality; that is, due to the descent of the roller, the PCB board will not rub against the roller during the angle adjustment process.

[0021] Preferably, the lifting assembly includes a lifting cylinder and a lifting platform, the lifting cylinder is installed at the bottom of the frame, the lifting platform is installed on the piston rod of the lifting cylinder, and a plurality of rollers located directly below the grabbing adjustment assembly are rotatably connected to the lifting platform; the lowest point of the roller's descent is higher than the position of the expansion roller.

[0022] By adopting the above technical solution, the setting of the lifting cylinder and the lifting platform allows multiple rollers located directly below the material grabbing adjustment assembly to descend synchronously. At the same time, the lowest point of the roller descent is higher than the position of the expansion roller, which prevents the roller from interfering with the transmission belt during the descent process, ensuring the stability and reliability of the equipment operation.

[0023] Preferably, the roller comprises a shaft and a plurality of rollers mounted on the shaft, the shaft is rotatably connected to the frame, and there are gaps between the rollers on the shaft.

[0024] By adopting the above technical solution, the roller column is composed of a shaft and a plurality of rollers mounted on the shaft, the shaft is rotatably connected to the frame, and there is a gap between the rollers on the same shaft. This design allows the gap between the rollers to reduce friction during the transmission of the PCB board, avoiding wear caused by continuous contact, thereby improving the transmission stability and service life of the PCB board and further improving the grinding efficiency.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The material picking and placing component places the PCB board on the transmission line. Under the action of the transmission line, the PCB board moves along the transportation direction of the transmission line. During the movement, the first edge is polished first. After the polishing is completed, the material picking and adjusting component grabs and adjusts the direction of the PCB board to polish the second edge, and then grabs it again by the material picking and adjusting component to repeat the above steps, and finally all the edges of the PCB board are polished. This design allows the PCB board to be automatically transported and adjusted and polished multiple times to ensure that each edge can be effectively processed; it significantly improves the polishing efficiency of the PCB board, reduces manual intervention, improves the level of production automation, and realizes an efficient and continuous PCB board edge polishing equipment; 2. The angle detection component can monitor the position deviation of the PCB board in real time. For some PCB boards that deviate during the transmission of the transmission line, the controller can accurately calculate the skew angle between the PCB board and the transmission direction of the transmission line. The adjustment motor adjusts the rotation angle of the PCB board according to the angle to ensure that the edge of the PCB board can remain parallel to the transmission direction of the transmission line after adjustment by the adjustment motor, thereby improving the grinding accuracy and efficiency; 3. The expansion rollers set at the beginning and end of the frame keep the transmission belt in a good tension state, ensuring the stability of the PCB board during the transmission process. When the material grabbing adjustment component is started, the lifting component first controls multiple rollers to descend synchronously, thereby releasing the PCB board, so that the adjustment nozzle can accurately adsorb and adjust the direction of the PCB board. The minimum distance between the adjustment nozzle and the roller is designed to be the thickness of the PCB board to ensure that the PCB board will not be damaged during the adjustment process. At the same time, when the adjustment nozzle is started, the distance from the roller is greater than the thickness of the PCB board but less than the sum of the thickness of the PCB board and the suction range of the adjustment nozzle, ensuring that the adjustment nozzle can effectively adsorb the PCB board without collision, thereby improving the grinding efficiency and quality; that is, due to the descent of the roller, the PCB board will not rub against the roller during the angle adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a PCB board edge grinding device in the implementation scheme of the present application.

[0027] Figure 2 It is a schematic diagram used to illustrate the specific structure of the material picking and placing component in the implementation scheme of this application.

[0028] Figure 3 It is a schematic diagram used to reflect the specific structure of the grinding component in the implementation scheme of this application.

[0029] Figure 4 It is a schematic diagram used to reflect the specific structure of the grinding tool in the implementation scheme of this application.

[0030] Figure 5 It is a schematic diagram used to reflect the specific structure of the material grabbing adjustment component in the implementation scheme of this application.

[0031] Figure 6 It is a schematic diagram used to reflect the specific structure of the lifting component in the implementation scheme of this application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 2. Transmission line; 21. Transmission motor; 22. Roller; 221. Shaft; 222. Roller; 23. Transmission belt; 24. Expansion roller; 3. Material picking and releasing assembly; 4. Material grabbing and adjusting assembly; 41. Adjustment motor; 42. Adjustment disk; 421. Adjustment mounting rod; 43. Adjustment nozzle; 431. Adjustment position rod; 44. Angle detection part; 441. Controller; 442. Distance sensor; 443. Detection mounting rod; 45. Laser sensor; 5. Grinding assembly; 6. Lifting assembly; 61. Lifting cylinder; 62. Lifting platform. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The present application embodiment discloses a PCB board edge grinding device. Figure 1 and Figure 2 The PCB board edge grinding equipment includes a frame 1, which is placed on the ground. A transmission line 2 is arranged on the frame 1. The transmission line 2 is arranged along the length direction of the frame 1 to transmit the PCB board from the beginning of the frame 1 to the end. The frame 1 is provided with a material picking and placing assembly 3 at the beginning of the transmission line 2. The frame 1 is also provided with a plurality of material picking and adjusting assemblies 4 on the transmission line 2. The plurality of material picking and adjusting assemblies 4 are sequentially arranged on the transmission line 2. A grinding assembly 5 is arranged between adjacent material picking and adjusting assemblies 4, material picking and placing assemblies 3 and material picking and adjusting assemblies 4. The material picking and adjusting assemblies 4 grab the PCB board and adjust the direction so that the grinding assembly 5 can grind the unpolished edge.

[0035] The material picking and placing component 3 places the PCB board on the transmission line 2. The PCB board moves along the transportation direction of the transmission line 2 under the action of the transmission line 2. During the movement, the first edge is first polished. After the polishing is completed, the material grabbing and adjusting component 4 grabs and adjusts the direction of the PCB board to polish the second edge, and then the material grabbing and adjusting component 4 is grabbed again to repeat the above steps, and finally all the edges of the PCB board are polished. This design allows the PCB board to be automatically transported and adjusted and polished multiple times to ensure that each edge can be effectively processed; it significantly improves the polishing efficiency of the PCB board, reduces manual intervention, improves the level of production automation, and realizes an efficient and continuous PCB board edge polishing equipment.

[0036] Reference Figure 1 and Figure 3 The transmission line 2 includes a transmission motor 21 and a plurality of rollers 22. The transmission motor 21 is mounted on the outer wall of the frame 1 by bolts, and the drive shaft of the transmission motor 21 observes the side wall of the frame 1. The plurality of rollers 22 are arranged in sequence along the length direction of the frame 1; the rollers 22 include a shaft 221 and a plurality of rollers 222 mounted on the shaft 221, and the shaft 221 is rotatably connected to the frame 1 through a bearing, and the drive shaft of the transmission motor 21 passes through the frame 1 and is connected to one of the shafts 221. In this embodiment, the drive shaft of the transmission motor 21 observes the frame 1 and is connected to the shaft 221 at one end of the frame 1. Expansion rollers 24 are provided at the beginning and the end of the frame 1, and the expansion rollers 24 are rotatably connected to the frame 1 through bearings, and the two expansion rollers 24 are located below the shaft 221 and have the same height; a transmission belt 23 is tensioned on the two shafts 221 and the two expansion rollers 24 at the ends of the frame 1, and the remaining shafts 221 located on the frame 1 are all in contact with the transmission belt 23.

[0037] Multiple rollers 222 are mounted on each shaft 221 , and there are gaps between the rollers 222 on the same shaft 221 . The rollers 222 may be cylinders with arc-shaped edges made of rubber or plastic. The rollers 222 on adjacent shafts 221 are arranged alternately.

[0038] Reference Figure 2 and Figure 3 In this embodiment, the material picking and placing component 3 is a suction nozzle structure with a screw rod to suck the PCB board and move the PCB board unidirectionally to the top of the roller 22. After the suction of the suction nozzle is removed, the PCB board falls on the roller 22, the suction nozzle is reset and the above action is repeated.

[0039] Reference Figure 3 and Figure 4 The grinding assembly 5 includes a guide area formed by multiple rollers and belts, and is rotatably connected to a PCB board grinding tool at the end of the frame 1 through a bearing. The middle of the blade of the edge grinding tool has a groove matching the edge of the PCB board. The edge grinding tool rotates to grind the edge of the PCB board and grind the straight edge of the PCB board into an arc edge. The specific edge grinding tool is Figure 4 shown.

[0040] Reference Figure 5 and Figure 6The material grabbing adjustment assembly 4 includes an adjustment motor 41 and an adjustment disk 42. The adjustment motor 41 is mounted on the frame 1 and suspended above the transmission line 2. The adjustment motor 41 may also be a servo motor. The adjustment disk 42 is mounted on the drive shaft of the adjustment motor 41. The adjustment disk 42 may be circular or polygonal. A plurality of adjustment mounting rods 421 are provided on the adjustment disk 42. The plurality of adjustment mounting rods 421 are fixedly mounted on the adjustment disk 42 in sequence by bolts and nuts. In this embodiment, the adjustment mounting rods 421 are installed in a scattered manner starting from the adjustment disk 42 in the direction of the transmission line 2, and when the adjustment disk 42 rotates at a preset angle, the side adjustment mounting rods 421 are difficult to exceed the edge of the transmission line 2.

[0041] Each adjustment mounting rod 421 is provided with a plurality of adjustment position rods 431. The adjustment mounting rod 421 is provided with a slide groove along its length direction. The adjustment position rod 431 is slidably installed on the adjustment mounting rod 421 along the length direction of the slide groove. Specifically, the adjustment position rod 431 is provided with a dovetail block and inserted into the dovetail slide groove corresponding to the dovetail block. The adjustment position rod 431 is fixed to the adjustment mounting rod 421 by bolts. The adjustment position rod 431 can adjust the angle between itself and the adjustment mounting rod 421. Each adjustment mounting rod 421 is provided with an adjustment nozzle 43. The adjustment nozzle 43 is installed at one end of the adjustment position rod 431 away from the adjustment mounting rod 421. The adjustment nozzle 43 can be a vacuum nozzle or other types of nozzles. By adjusting the position and angle of the position rod 431, the working position of the adjustment nozzle 43 can be more accurately controlled.

[0042] When the PCB board moves to the bottom of the adjustment nozzle 43, the adjustment nozzle 43 absorbs the PCB board and the adjustment motor 41 drives the adjustment disk 42 to rotate, so that the PCB board completes the angle adjustment and makes the edge of the PCB board that needs to be polished parallel to the transportation direction of the transmission line 2; in most cases, the adjustment motor 41 drives the PCB board to rotate 90°.

[0043] The material gripping and adjusting component 4 can accurately grasp and adjust the direction of the PCB board by adjusting the motor 41, the adjusting disk 42 and the plurality of adjusting nozzles 43, so that the PCB board can automatically complete a 90° rotation on the transmission line 2, ensuring that each edge can smoothly enter the grinding component 5 for grinding. This not only improves the grinding accuracy of the PCB board, but also significantly improves the grinding efficiency, reduces manual intervention, and reduces labor intensity.

[0044] A small part of the PCB board will tilt when transported on the transmission line 2, so an angle detection member 44 is also provided at each adjustment motor 41, and the angle detection member 44 includes a controller 441 and a plurality of distance sensors 442. A detection mounting rod 443 is provided on the frame 1, and the detection mounting rod 443 is provided along the width direction of the transmission line 2, and a plurality of distance sensors 442 are sequentially provided along the length direction of the detection mounting rod 443. In this embodiment, four distance sensors 442 can be provided, which are respectively located at the two ends and the middle position of the detection mounting rod 443, and the distance sensor 442 can be a photoelectric sensor or an ultrasonic sensor. The detection direction of the distance sensor 442 is perpendicular to the width direction of the transmission line 2.

[0045] The controller 441 is installed on the frame 1, and the distance sensor 442 and the adjustment motor 41 are electrically connected to the controller 441. The controller 441 can be a PLC controller 441 or a single-chip microcomputer. Each distance sensor 442 detects the distance between the PCB board and the distance sensor 442 and sends a distance signal to the controller 441. The controller 441 receives multiple distance signals to determine the angle of the skew angle between the PCB board and the transmission direction of the transmission line 2, and controls the adjustment motor 41 to start according to the angle of the skew angle. The PCB board is rotated after deducting or adding the angle of the skew angle based on the original preset rotation of 90° of the adjustment motor 41, so that the unpolished edge of the PCB board is parallel to the transmission direction of the transmission line 2.

[0046] The angle detection member 44 can monitor the position deviation of the PCB board in real time, and the controller 441 can accurately calculate the skew angle between the PCB board and the transmission direction of the transmission line 2 for some PCB boards that deviate during the transmission process of the transmission line 2. The adjustment motor 41 adjusts the rotation angle of the PCB board according to the angle, ensuring that the edge of the PCB board can remain parallel to the transmission direction of the transmission line 2 after adjustment by the adjustment motor 41, thereby improving the grinding accuracy and efficiency.

[0047] Reference Figure 5 and Figure 6 The frame 1 is provided with a lifting assembly 6 below each material grabbing adjustment assembly 4, and the lifting assembly 6 controls the multiple rollers 22 located directly below the material grabbing adjustment assembly 4 to descend synchronously. In this embodiment, the minimum distance between the adjustment nozzle 43 and the top of the roller 222 is equal to the thickness of the PCB board, so the lifting assembly 6 and the adjustment nozzle 43 are started in sequence. When the adjustment nozzle 43 is started, the distance between the adjustment nozzle 43 and the roller 22 is greater than the thickness of the PCB board and less than the sum of the thickness of the PCB board and the suction range of the adjustment nozzle 43.

[0048] The lifting assembly 6 includes a lifting cylinder 61 and a lifting platform 62. The lifting cylinder 61 is installed at the bottom of the frame 1. A laser sensor 45 is provided on the adjustment mounting rod 421 of each material grabbing adjustment assembly 4 near the end of the transmission line 2. The lifting cylinder 61 and the laser sensor 45 are electrically connected to the controller 441. When the laser sensor 45 senses the PCB board, it sends an arrival signal to the controller 441. After receiving the arrival signal, the controller 441 controls the lifting cylinder 61 to start; the lifting platform 62 is installed on the piston rod of the lifting cylinder 61, and several shafts 221 located directly below the material grabbing adjustment assembly 4 are rotatably connected to the lifting platform 62 through bearings; under the lifting action of the lifting cylinder 61, the lowest point of the shaft 221 is higher than the position of the expansion roller 24.

[0049] The PCB board moves along the direction of the transmission line 2 under the action of the transmission line 2. When the PCB board moves below the laser sensor 45, the laser of the laser sensor 45 is blocked by the PCB board. The laser sensor 45 sends an arrival signal of the arrival of the PCB board to the controller 441. After receiving the arrival signal, the controller 441 controls the lifting cylinder 61 to start and drive the shaft 221 at the corresponding position to descend, and then controls the adjustment nozzle 43 to accurately adsorb and adjust the direction of the PCB board.

[0050] The implementation principle of a PCB board edge polishing device in an embodiment of the present application is as follows: the PCB board is first grasped and placed on the transmission line 2 by the material picking and placing component 3, and at the same time, the board edge of the PCB board to be polished is aligned with the edge located on the transmission line 2, and the PCB board enters the polishing component 5 for polishing. After the first edge of the PCB board is polished, it is moved out by the polishing component 5 under the action of the transmission line 2 and moves in the direction of the grasping and adjusting component 4. During the movement, multiple distance sensors 442 sense the distance between the PCB board and each distance sensor 442 during the movement, and send the distance signal to the controller 441. The controller 441 accurately calculates the skew angle between the PCB board and the transmission direction of the transmission line 2; at the same time, the PCB The board continues to move. When the PCB board moves below the laser sensor 45, the laser of the laser sensor 45 is blocked by the PCB board. The laser sensor 45 sends an arrival signal of the PCB board to the controller 441. After receiving the arrival signal, the controller 441 controls the lifting cylinder 61 to start and drive the shaft 221 at the corresponding position to descend; and sequentially starts the adjustment nozzle 43 to adsorb the PCB board located directly below the laser sensor 45. When the adsorption of the adjustment nozzle 43 is completed, the controller 441 controls the adjustment motor 41 to start according to the angle of the skew angle, and rotates the PCB board after deducting or adding the angle of the skew angle on the basis of the original preset rotation of 90° of the adjustment motor 41, so that the unpolished edge of the PCB board is parallel to the transmission direction of the transmission line 2 and is located at the edge of the transmission line 2. The PCB board enters the polishing assembly 5 for polishing. After the second edge of the PCB board is polished, it is moved out of the polishing assembly 5 under the action of the transmission line 2 and moves in the direction of the next material grabbing adjustment assembly 4. The above actions are repeated until the four board edges of the PCB board are polished.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PCB board edge grinding device, characterized by: The invention comprises a frame (1), a transmission line (2) is arranged on the frame (1), a material picking and placing assembly (3) is arranged on the frame (1) at the beginning of the transmission line (2), a plurality of material picking and adjusting assemblies (4) are also arranged on the frame (1) on the transmission line (2), and a grinding assembly (5) is arranged between the adjacent material picking and placing assemblies (4), the material picking and placing assemblies (3) and the material picking and adjusting assemblies (4), and the material picking and adjusting assemblies (4) grab a PCB board and adjust its direction so that the grinding assembly (5) can grind the ungrinded edge.

2. The PCB board edge grinding device according to claim 1, characterized in that: The material grabbing and adjusting component (4) comprises an adjusting motor (41), an adjusting disk (42) and a plurality of adjusting suction nozzles (43); the adjusting motor (41) is mounted on a frame (1); the adjusting disk (42) is mounted on a driving shaft of the adjusting motor (41); a plurality of adjusting suction nozzles (43) are mounted on the adjusting disk (42); and the plurality of adjusting suction nozzles (43) adsorb and grab the PCB board on the transmission line (2) and rotate the PCB board 90 degrees to adjust the transmission direction of the PCB board.

3. The PCB board edge grinding device according to claim 2, characterized in that: The material grabbing adjustment component (4) also includes an angle detection component (44), the angle detection component (44) includes a controller (441) and a plurality of distance sensors (442), a detection mounting rod (443) is provided on the frame (1), the detection mounting rod (443) is provided along the width direction of the transmission line (2), and a plurality of distance sensors (442) are sequentially provided along the length direction of the detection mounting rod (443); the detection directions of the plurality of distance sensors (442) are perpendicular to the width direction of the transmission line (2), and the plurality of distance sensors (442) are arranged in sequence along the length direction of the detection mounting rod (443); (442) and the adjustment motor (41) are both electrically connected to the controller (441); a plurality of the distance sensors (442) detect the distance between the PCB board and the distance sensors (442) and send distance signals to the controller (441); the controller (441) receives the plurality of distance signals to determine the angle of the skew angle between the PCB board and the transmission direction of the transmission line (2), controls the adjustment motor (41) to start, and rotates the PCB board after deducting or adding the angle of the skew angle, so that the edge of the PCB board is parallel to the transmission direction of the transmission line (2).

4. The PCB board edge grinding device according to claim 3, characterized in that: The material grabbing adjustment assembly (4) also includes a plurality of adjustment mounting rods (421), which are sequentially mounted on the adjustment disk (42) and are dispersedly arranged in a direction of the transmission line (2) with the adjustment disk (42) as a starting point; and a plurality of adjustment nozzles (43) are mounted on each of the adjustment mounting rods (421).

5. The PCB board edge grinding device according to claim 4, characterized in that: An adjustment position rod (431) is provided between each of the adjustment suction nozzles (43) and the adjustment mounting rod (421); the adjustment position rod (431) is slidably mounted on the adjustment mounting rod (421) along the length direction of the adjustment mounting rod (421); and the adjustment suction nozzle (43) is mounted on one end of the adjustment position rod (431) away from the adjustment mounting rod (421).

6. The PCB board edge grinding device according to claim 5, characterized in that: The position adjustment rod (431) is capable of adjusting the angle between itself and the adjustment installation rod (421).

7. The PCB board edge grinding device according to claim 2, characterized in that: The transmission line (2) comprises a transmission motor (21) and a plurality of rollers (22); the transmission motor (21) is mounted on a frame (1); the plurality of rollers (22) are arranged in sequence along the length direction of the frame (1); a driving shaft of the transmission motor (21) passes through the frame (1) and is connected to one of the rollers (22); a transmission belt (23) is tensioned between the rollers (22) at the beginning and the end of the frame (1); and the plurality of rollers (22) are in contact with the transmission belt (23).

8. The PCB board edge grinding device according to claim 7, characterized in that: The frame (1) is provided with expansion rollers (24) at the beginning and the end, and the transmission belt (23) is tensioned on the expansion rollers (24); the frame (1) is provided with a lifting assembly (6) below each material grabbing adjustment assembly (4), and the lifting assembly (6) controls a plurality of rollers (22) located directly below the material grabbing adjustment assembly (4) to descend synchronously; the minimum distance between the adjustment suction nozzle (43) and the rollers (22) is equal to the thickness of the PCB board, and the lifting assembly (6) and the adjustment suction nozzle (43) are started in sequence. When the adjustment suction nozzle (43) is started, the distance between the adjustment suction nozzle (43) and the rollers (22) is greater than the thickness of the PCB board and less than the sum of the thickness of the PCB board and the suction range of the adjustment suction nozzle (43).

9. The PCB board edge grinding device according to claim 8, characterized in that: The lifting assembly (6) comprises a lifting cylinder (61) and a lifting platform (62); the lifting cylinder (61) is mounted at the bottom of the frame (1); the lifting platform (62) is mounted on the piston rod of the lifting cylinder (61); a plurality of rollers (22) located directly below the material grabbing adjustment assembly (4) are rotatably connected to the lifting platform (62); the lowest point at which the rollers (22) descend is higher than the position of the expansion rollers (24).

10. The PCB board edge grinding device according to claim 7, characterized in that: The roller column (22) comprises a shaft (221) and a plurality of rollers (222) mounted on the shaft (221); the shaft (221) is rotatably connected to the frame (1); and there is a gap between the rollers (222) on the shaft (221).

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