A high-density interconnection PCB drill burr processing device

Abstract

The utility model discloses a high density interconnect PCB drilling burr processing device relates to PCB board processing technical field, the utility model discloses a roller conveyor one side is connected with the support, and the inside one side of support is installed with two lifting mechanisms, and the loading platform is connected between two lifting mechanisms, and the first photoelectric switch and second photoelectric switch are installed respectively on the support top, and the travel switch is installed below the inside of support. The utility model discloses through the setting of lifting mechanism and loading platform, and lifting mechanism can drive the up and down movement of loading platform, so that loading platform can real -time adjustment height according to the stacking number of HDI PCB board, always keep the reasonable gap between roller conveyor, effectively avoid the collision problem of HDI PCB board falling and falling injury or stacking excess due to improper height, avoid the gap too big and lead to HDI PCB board fall injury, and avoid the gap too small and lead to temporary stacking amount less.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing technology, specifically to a high-density interconnect PCB drilling burr removal device. Background Technology

[0002] High-density interconnect PCB, or HDI PCB, is a type of printed circuit board with high line density, small aperture, and thin layer structure. Through fine wiring design and advanced manufacturing processes, it can meet the needs of miniaturization and high performance of electronic devices and is widely used in precision electronic fields such as smartphones, laptops, and communication equipment.

[0003] PCB drilling is a key process in its manufacturing. Through holes or blind holes are drilled on the substrate using specialized equipment to achieve electrical connections between different circuit layers. Blinders are the burrs and debris generated at the edge of the hole after drilling. If not treated in time, they may cause problems such as short circuits and poor assembly. Therefore, blister removal is a necessary step after PCB drilling. These excess materials are usually removed by grinding or other methods to ensure the performance and quality of the PCB.

[0004] In the existing PCB deburring process, the PCB boards that have been deburred are transported to the end via a roller conveyor and dropped directly onto a platform at a fixed height for stacking. Since the height gap between the platform and the conveyor is fixed, if the gap is large, the PCB boards that fall initially are easily damaged due to excessive impact. If the gap is small, the number of PCB boards that the platform can temporarily store is limited, and the PCB boards that are continuously delivered are prone to collisions due to excessive stacking, resulting in damage to the boards. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a high-density interconnect PCB drilling burr removal device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-density interconnect PCB drilling burr removal device, comprising a roller conveyor, a bracket connected to one side of the roller conveyor, and two lifting mechanisms installed inside one side of the bracket, with a platform connecting the two lifting mechanisms, a first photoelectric switch and a second photoelectric switch respectively installed on the top of the bracket, and a limit switch installed at the bottom inside the bracket.

[0007] By adopting the above technical solution, the platform is driven to move up and down by the lifting mechanism. With the cooperation of the first photoelectric switch and the second photoelectric switch to detect the stacking status of the HDI PCB board, the height gap between the platform and the roller conveyor can be adjusted in real time. At the same time, the limit switch is used to prevent excessive stacking, which effectively solves the problem of HDI PCB board being dropped or collided due to improper gap.

[0008] Furthermore, the first photoelectric switch is located above the outer surface of the second photoelectric switch.

[0009] By adopting the above technical solution, the setting of the upper and lower positions can distinguish between the obstructed state when the HDI PCB board is stacked and the unobstructed state after it is removed. The first photoelectric switch at the top can detect the falling HDI PCB board first and trigger the platform to descend, while the second photoelectric switch at the bottom can trigger the platform to move up in time after the HDI PCB board is removed, so as to achieve precise control of the platform height.

[0010] Furthermore, both the first and second photoelectric switches are tilted.

[0011] By adopting the above technical solution, the tilt angle design can avoid the normal operating area of ​​the staff around the platform, reduce the accidental triggering caused by non-HDI PCB board objects such as hands and tools blocking the light, and ensure that the photoelectric switch only responds to the state of the HDI PCB board on the platform, thereby improving the stability of control.

[0012] Furthermore, both lifting mechanisms are either fully dense series aluminum base linear modules or semi dense series aluminum base linear modules from JLCPCB, and the lifting mechanisms are equipped with servo motors and drivers.

[0013] By adopting the above technical solution, the selected aluminum base linear module has the characteristics of compact structure and stable operation. When paired with servo motor and driver, it can provide stable power and achieve precise position control, ensuring that the platform runs smoothly and is accurately positioned during the lifting process, thus meeting the height adjustment requirements when stacking HDI PCB boards.

[0014] Furthermore, the first photoelectric switch uses Omron's through-beam photoelectric sensor EE-SPW311, and the second photoelectric switch uses Omron's through-beam photoelectric sensor SPW411.

[0015] By adopting the above technical solution, the selected Omron through-beam photoelectric sensor has the characteristics of high detection sensitivity and fast response speed. It can accurately identify the PCB board's blocking state of light, ensuring that the detection signal is accurately transmitted to the control system, and providing a reliable basis for the lifting and lowering control of the platform.

[0016] Furthermore, the limit switch is an Omron ball-operated rocker type micro switch SS-5GL2, and the stage is in contact with the limit switch.

[0017] By adopting the above technical solution, the ball-bearing rocker structure of this type of limit switch has sensitive triggering performance. When the platform moves down to contact the limit switch due to excessive PCB board stacking, it can quickly trigger a stop alarm signal, interrupt the operation of the equipment in time, and avoid collision damage caused by continuous PCB board stacking.

[0018] Furthermore, a deburring machine is installed on one side of the top and one side of the bottom of the roller conveyor, and a vacuum cleaner interface is connected to the top of the deburring machine.

[0019] By adopting the above technical solution, the deburring machine can deburr the drilled edges of HDI PCB boards conveyed by the roller conveyor, ensuring that the board edges are smooth; the vacuum cleaner interface can remove copper shavings, resin debris and other impurities generated during the process in real time through external vacuuming equipment, ensuring that the surface of the HDI PCB board is clean and the working environment is tidy, and avoiding impurities from affecting the quality of subsequent processes.

[0020] Furthermore, a control panel is installed on the outer surface of the roller conveyor, and the roller conveyor, control panel, deburring machine, lifting mechanism, first photoelectric switch, second photoelectric switch and limit switch are all electrically connected to the control panel.

[0021] By adopting the above technical solution, the control panel, as the core control unit, can centrally receive detection signals from various components and coordinate the actions of the roller conveyor, the deburring machine, and the start and stop of the lifting mechanism according to the preset program, thereby realizing the automated operation of the device and improving work efficiency.

[0022] Furthermore, the stage has a triangular longitudinal section and is made of aluminum alloy, with an anodized coating on its surface.

[0023] By adopting the above technical solutions, the triangular longitudinal section design can enhance the structural stability of the platform and its support capacity for the DHIPCB board; the aluminum alloy material reduces the weight of the platform while ensuring sufficient load-bearing strength, making it easier for the lifting mechanism to drive; the anodized coating on the surface significantly improves the platform's corrosion resistance and surface wear resistance, extending its service life.

[0024] Furthermore, multiple mounting holes are provided on one side of the outer surface and one side of the back of the platform, and the platform is detachably connected to the output end of the lifting mechanism through the mounting holes and bolts.

[0025] By adopting the above technical solution, the multiple mounting holes and bolt connections make the platform and lifting mechanism a detachable structure, which facilitates quick disassembly and replacement when the platform is worn or damaged.

[0026] In summary, the present invention has the following main advantages: 1. This utility model, through the setting of a lifting mechanism and a platform, allows the lifting mechanism to drive the platform to move up and down, enabling the platform to adjust its height in real time according to the number of HDI PCBs stacked, always maintaining a reasonable gap with the roller conveyor. This effectively avoids the problem of HDI PCBs falling due to improper height or collisions caused by excessive stacking. The platform is made of aluminum alloy with a triangular cross-section, which not only improves the structural stability and load-bearing capacity of the platform, but also enhances its corrosion resistance and wear resistance through an anodized coating, extending its service life. It avoids the problem of excessive gaps causing damage to HDI PCBs and excessive gaps resulting in insufficient temporary stacking. 2. This utility model utilizes a first photoelectric switch and a second photoelectric switch. The first photoelectric switch is located above the second photoelectric switch, and both are tilted. The first photoelectric switch triggers the platform to descend when the HDI PCB board falls onto the platform and blocks light, stopping when light reception is restored. The second photoelectric switch triggers the platform to move upward when light reception is restored after the HDI PCB board is removed, stopping when it is blocked again. This coordinated action precisely controls the platform's start and stop, ensuring the height gap between the platform and the roller conveyor remains optimal. The tilted design effectively reduces malfunctions caused by workers accidentally blocking light with their hands or other body parts while moving on the sides, outer surface, or back of the platform, significantly improving control stability and automation, and enhancing control accuracy. 3. By incorporating a limit switch, this invention triggers the control panel to stop and sound an alarm when the platform moves down to the limit switch due to excessive stacking of HDI PCB boards. This promptly alerts staff to remove the HDI PCB boards, preventing collision damage caused by continuous stacking and further ensuring the safe storage of HDI PCB boards. It also reduces the risk of equipment failure due to overload operation and further improves the reliability of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the support structure of this utility model; Figure 3 This is a schematic diagram of the platform structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the bracket of this utility model; Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the image; Figure 6 This is a schematic diagram of the platform structure of this utility model from a bottom view.

[0028] In the diagram: 1. Roller conveyor; 2. Control panel; 3. Deburring machine; 4. Bracket; 5. Lifting mechanism; 6. Platform; 7. First photoelectric switch; 8. Second photoelectric switch; 9. Limit switch; 10. Mounting hole; 11. Vacuum cleaner interface. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of this utility model will be described below based on its overall structure.

[0031] Example 1: A high-density interconnect PCB drilling burr removal device, such as Figures 1-6 As shown, the system includes a roller conveyor 1, with a bracket 4 connected to one side of the roller conveyor 1. Two lifting mechanisms 5 are installed inside one side of the bracket 4. Both lifting mechanisms 5 are either fully-closed or semi-closed aluminum-based linear modules from JLCPCB. Each lifting mechanism 5 is equipped with a servo motor and a driver. A platform 6 connects the two lifting mechanisms 5, and the platform 6 is used to receive HDI PCBs that have been conveyed by the roller conveyor 1 and have undergone deburring treatment. A first photoelectric switch 7 and a second photoelectric switch 8 are respectively installed on the top of the bracket 4. The first photoelectric switch 7 is located above the outer surface of the second photoelectric switch 8. Both the first and second photoelectric switches 7 and 8 are tilted. The first photoelectric switch 7 uses an Omron through-beam photoelectric sensor EE-SPW311, and the second photoelectric switch 8 uses an Omron through-beam photoelectric sensor-SPW411. Both are used together to detect HDI. The stacking status of the PCB boards on the stage 6 triggers the lifting and lowering of the stage 6; a limit switch 9 is installed inside the lower part of the bracket 4. The limit switch 9 is an Omron ball-bearing rocker type micro switch SS-5GL2. The stage 6 is in contact with the limit switch 9. When the stage 6 moves down to contact the limit switch 9, a stop alarm can be triggered to prevent excessive stacking of HDI PCB boards.

[0032] See Figure 1In the above embodiment, a deburring machine 3 is installed on one side of the top and one side of the bottom of the roller conveyor 1. A vacuum cleaner interface 11 is connected to the top of the deburring machine 3. The vacuum cleaner interface 11 can remove copper shavings, resin debris and other impurities generated during the deburring process by using an external vacuum cleaner, so as to avoid the impurities remaining and affecting the quality of the PCB board or polluting the environment. A control panel 2 is installed on the outer surface of the roller conveyor 1. The roller conveyor 1, control panel 2, deburring machine 3, lifting mechanism 5, first photoelectric switch 7, second photoelectric switch 8 and limit switch 9 are all electrically connected to the control panel 2. The control panel 2 can centrally receive the signals fed back by each component and accurately control its operating status to realize the automated operation of the device.

[0033] Example 2: Based on the above embodiment 1, the following settings are made to improve the performance of the stage 6.

[0034] See Figures 1-6 In the above embodiment, the longitudinal section of the platform 6 is triangular. The platform 6 is made of aluminum alloy and has an anodized coating on its surface. The triangular longitudinal section design can enhance the structural stability of the platform and its support capacity for the HDI PCB board. The aluminum alloy material reduces the weight of the platform while ensuring load-bearing strength, which is convenient for the lifting mechanism to drive. The anodized coating significantly improves the corrosion resistance and surface wear resistance of the platform, extending its service life.

[0035] Example 3: Based on the above embodiment 1, the following settings are made to facilitate the maintenance and adaptation of the platform 6.

[0036] See Figure 6 In the above embodiment, multiple mounting holes 10 are provided on one side of the outer surface and the back side of the platform 6. The platform 6 is detachably connected to the output end of the lifting mechanism 5 through the mounting holes 10 and bolts. This detachable connection structure allows the platform 6 to be disassembled and replaced when wear or damage occurs.

[0037] The implementation principle of this utility model is as follows: First, the worker places the HDI PCB board to be deburred on the roller conveyor 1. The roller conveyor 1 drives multiple rollers on its surface to rotate synchronously through a drive component. Utilizing the friction between the rollers and the HDI PCB board, the HDI PCB board is smoothly conveyed into the deburring machine 3. When the HDI PCB is conveyed to the processing area of ​​the deburring machine 3, the deburring machine 3 starts, and its internal grinding components, such as abrasive rollers, contact the drilled edges of the HDI PCB board, thereby grinding away the burrs generated after drilling to ensure smooth edges of the HDI PCB board and avoid problems such as short circuits or poor assembly in subsequent processes. During the deburring process, the roller conveyor 1 maintains a uniform conveying speed, so that the area of ​​the HDI PCB board to be processed continuously passes through the grinding components of the deburring machine 3, achieving continuous and uniform burr removal. After processing, the roller conveyor 1 continues to convey the PCB board forward. Furthermore, when the deburring machine 3 polishes the HDI PCB board, the vacuum cleaner interface 11 connected to its top creates negative pressure through an external vacuum cleaner, which can remove copper shavings, resin debris and other impurities generated during the polishing process in real time. If these impurities remain on the surface of the HDI PCB board, they may cause short circuits or affect the subsequent assembly accuracy. The vacuum cleaner interface 11 ensures that the surface of the HDI PCB board is clean, while preventing impurities from accumulating inside the deburring machine 3 and causing wear on the equipment. This ensures the continuous and stable operation of the polishing components and maintains a clean working environment. The burred HDI PCB board is conveyed by roller conveyor 1 and falls onto platform 6 or the top of stacked HDI PCB boards on platform 6. Platform 6 is made of aluminum alloy with a triangular cross-section, which improves the structural stability and load-bearing capacity of platform 6, and enhances corrosion resistance and wear resistance through an anodized coating on the surface, extending its service life. At this time, the HDI PCB board will block the beam of the first photoelectric switch 7. The first photoelectric switch 7 transmits the signal to control panel 2 through a connector with a signal wire. Control panel 2 sends an electrical signal to the driver of lifting mechanism 5 through the signal wire, and then controls lifting mechanism 5 to start, driving platform 6 to move downward. When platform 6 moves down to the point where the receiver of the first photoelectric switch 7 receives the beam of light from the projector of the first photoelectric switch 7 again, the first photoelectric switch 7 transmits the signal to control panel 2 again. Control panel 2 controls lifting mechanism 5 to stop, and platform 6 stops moving downward. In this way, a reasonable gap is always maintained between platform 6 or the top of stacked HDI PCB boards and roller conveyor 1 to avoid damage to HDI PCB boards due to improper drop height. As the number of HDI PCBs stacked on platform 6 gradually increases, platform 6 continues to move down until it contacts limit switch 9. Limit switch 9 sends a signal back to control panel 2 through connector with signal wire. After receiving the signal, control panel 2 stops the control device and issues an alarm. In addition to stopping the lifting mechanism 5, control panel 2 also sends a stop signal to roller conveyor 1 and deburring machine 3, suspending the conveying and polishing of HDI PCBs until the staff removes the HDI PCBs and resets them. Then, the system is manually restarted through control panel 2 to ensure that the subsequent board conveying is completely blocked under the stacking limit state, avoiding the risk of collision from the source and ensuring the safety and orderliness of the subsequent HDI PCB storage process. After the staff removes the HDI PCB board from the platform 6, the receiver of the second photoelectric switch 8 receives the light from the projector again. The second photoelectric switch 8 transmits the signal to the control panel 2 through a connector with a signal wire. The control panel 2 controls the lifting mechanism 5 to run in reverse, driving the platform 6 to move upward. When the platform 6 moves to the point where the remaining few HDI PCB boards block the beam of the second photoelectric switch 8, the second photoelectric switch 8 transmits a signal to the control panel 2. The control panel 2 controls the lifting mechanism 5 to stop, and the platform 6 stops moving upward, restoring the platform 6 to its initial height suitable for receiving the next HDI PCB board. This ensures the continuity and automated operation of the entire storage process and improves overall work efficiency. Furthermore, during normal operation, the tilting of the first photoelectric switch 7 and the second photoelectric switch 8 avoids the normal operating areas of the staff on both sides and back of the platform 6. When the staff performs inspections or other operations around the platform 6, their hands, tools, and other parts are less likely to enter the beam path of the photoelectric switch, ensuring that the sensor only responds to the obstruction of the HDI PCB board, further reducing the probability of false triggering and making the lifting control of the platform 6 more precise.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-density interconnect PCB drilling burr removal device, comprising a roller conveyor (1), characterized in that: The roller conveyor (1) is connected to a bracket (4) on one side, and two lifting mechanisms (5) are installed inside the bracket (4) on one side. A platform (6) is connected between the two lifting mechanisms (5). A first photoelectric switch (7) and a second photoelectric switch (8) are installed on the top of the bracket (4), and a limit switch (9) is installed inside the bottom of the bracket (4).

2. The high-density interconnect PCB drilling burr removal device according to claim 1, characterized in that: The first photoelectric switch (7) is located above the outer surface of the second photoelectric switch (8).

3. The high-density interconnect PCB drilling burr removal device according to claim 2, characterized in that: The first photoelectric switch (7) and the second photoelectric switch (8) are both tilted.

4. The high-density interconnect PCB drilling burr removal device according to claim 1, characterized in that: Both of the lifting mechanisms (5) are either full-dense series aluminum base linear modules or semi-dense series aluminum base linear modules from JLCPCB, and the lifting mechanism (5) is equipped with a servo motor and a driver.

5. The high-density interconnect PCB drilling burr removal device according to claim 3, characterized in that: The first photoelectric switch (7) adopts Omron's through-beam photoelectric sensor EE-SPW311, and the second photoelectric switch (8) adopts Omron's through-beam photoelectric sensor -SPW411.

6. The high-density interconnect PCB drilling burr removal device according to claim 1, characterized in that: The limit switch (9) is an Omron ball-bearing rocker type micro switch SS-5GL2, and the stage (6) is in contact with the limit switch (9).

7. The high-density interconnect PCB drilling burr removal device according to claim 1, characterized in that: The roller conveyor (1) is equipped with a deburring machine (3) on one side of the top and one side of the bottom, and the top of the deburring machine (3) is connected to a vacuum cleaner interface (11).

8. The high-density interconnect PCB drilling burr removal device according to claim 7, characterized in that: The roller conveyor (1) is equipped with a control panel (2) on its outer surface, and the roller conveyor (1), control panel (2), deburring machine (3), lifting mechanism (5), first photoelectric switch (7), second photoelectric switch (8) and limit switch (9) are all electrically connected to the control panel (2).

9. The high-density interconnect PCB drilling burr removal device according to claim 1, characterized in that: The platform (6) has a triangular longitudinal section and is made of aluminum alloy. The surface of the platform (6) is provided with an anodized coating.

10. The high-density interconnect PCB drilling burr removal device according to claim 9, characterized in that: The platform (6) has multiple mounting holes (10) on one side of its outer surface and one side of its back. The platform (6) is detachably connected to the output end of the lifting mechanism (5) through the mounting holes (10) and bolts.

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