Double-layer PCB edge trimming device

Abstract

This utility model discloses a double-layer PCB edge trimming device, specifically relating to the field of double-layer PCB edge trimming technology. It includes a frame and a work cabinet. The work cabinet is mounted on the upper surface of the frame, and a cabinet door is hinged to the side surface of the work cabinet. A grinding assembly is located inside the work cabinet, and a support mechanism is positioned directly below the grinding assembly. The support mechanism includes a support platform and a rotating platform. The support platform is installed on the upper surface of the inner side of the work cabinet, and the rotating platform is embedded in the center of the support platform. A pneumatic telescopic rod is mounted on the upper surface of the rotating platform, extending to the inner side of the rotating platform. The support mechanism supports and limits the PCB edge. During grinding, a cooling fan provides air cooling to the grinding area. The grinding rod adopts a three-section structure to prevent continuous friction. This structure effectively dissipates heat, preventing continuous heat generation at the grinding location, which could lead to localized overheating or uneven heat dissipation, affecting the overall performance of the circuit board.

Description

Technical Field

[0001] This utility model relates to the field of double-layer PCB edge trimming technology, and more specifically, to a double-layer PCB edge trimming device. Background Technology

[0002] A double-layer PCB edge trimming device is a piece of equipment used to trim and process the edges of double-layer printed circuit boards. Its main purpose is to improve the flatness and smoothness of the PCB edges, thereby ensuring the performance and reliability of the circuit board in subsequent processing or use. For example, application number CN202420531330.2 discloses a double-layer PCB edge trimming device. By adjusting the component settings and the height of the grinding equipment, it can be adjusted according to different workpiece sizes and shapes to ensure effective contact with the surface of the double-layer PCB during the grinding process. This allows it to handle workpieces of different sizes and shapes, improves the versatility and flexibility of the equipment, and thus improves the efficiency of the grinding process. Ensuring correct contact between the equipment and the surface of the double-layer PCB can achieve more uniform and precise grinding. The above device solves the problem of "inconsistent grinding effect". However, when grinding double-layer PCBs, heat is generated at the grinding position. Since the copper layer of the double-layer PCB is relatively thin, local overheating or uneven heat dissipation may occur during the edge trimming process, ultimately affecting the overall performance of the circuit board. Therefore, a double-layer PCB edge trimming device is proposed to address the above problems. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a double-layer PCB edge trimming device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-layer PCB edge trimming device, including a frame, a work cabinet, a cabinet door, a grinding component, and a support mechanism. The upper end face of the frame is provided with a work cabinet, and the side end face of the work cabinet is connected to a cabinet door via a hinge. The inner cavity of the work cabinet is provided with a grinding component, and a support mechanism is provided directly below the grinding component. The support mechanism includes a support platform and a rotating platform. The support platform is installed on the upper surface of the inner side of the work cabinet, and the rotating platform is embedded in the center of the support platform. A pneumatic telescopic rod is provided on the upper surface of the rotating platform, and the pneumatic telescopic rod extends to the inner side of the rotating platform. A first groove is carved on one side of the rotating platform, and a second groove is carved on the side of the rotating platform away from the first groove. A base is provided on the inner side of the first groove, and a support rod is connected to one corner of the base through a first servo motor. A cooling fan is provided on the end of the support rod away from the first servo motor. A dust cover is provided at the edge of the second groove, and an air pump is provided on the bottom surface of the work cabinet.

[0005] Preferably, the side wall of the work cabinet is provided with a fixing block, and the side of the fixing block away from the work cabinet is connected to a positioning camera via a second servo motor. The upper surface of the work cabinet is provided with an exhaust port, and the side wall of the dust cover is provided with a HEPA filter.

[0006] Preferably, the grinding assembly includes a robotic arm and a mounting frame. The robotic arm is mounted on the top surface inside the work cabinet, and the moving end of the robotic arm is provided with a mounting frame. A drive motor is provided on the side of the mounting frame away from the robotic arm, and the output end of the drive motor is connected to a grinding rod through a transmission shaft. A distance sensor is provided on the bottom surface of the mounting frame.

[0007] Preferably, the frame is connected to the work cabinet by detachable bolts, and a PLC controller is arranged on the bottom surface of the work cabinet. The rotary table, pneumatic telescopic rod, first servo motor, cooling fan and air pump are electrically connected to the PLC controller.

[0008] Preferably, the rotary table, the first groove and the second groove are both installed on the upper end face of the support platform, and the first groove and the second groove extend to the inner side of the rotary table. The pneumatic telescopic rod forms a rotating structure around the center of the rotary table through the rotary table and the support platform.

[0009] Preferably, the support rod forms a rotating structure around the output shaft center of the first servo motor by means of the first servo motor and the base. The pneumatic telescopic rod is connected to the air pump through an air pipe. Several sets of the pneumatic telescopic rod are provided, and the several sets of the pneumatic telescopic rod are evenly and symmetrically arranged.

[0010] Preferably, the positioning camera forms a rotating structure around the output shaft center of the second servo motor via the second servo motor and the fixed block, and the work cabinet forms a communication structure with the top of the work cabinet via the exhaust port.

[0011] Preferably, the drive motor forms a rod transmission structure with the grinding rod through a transmission shaft. The grinding rod has a three-section structure and is made of copper tubing. The outer surfaces of the three sections of the grinding rod are respectively bonded with sandpaper of different roughness. The robotic arm and distance sensor are electrically connected to the PLC controller.

[0012] The technical effects and advantages of this utility model are as follows: Compared with the prior art, this double-layer PCB edge trimming device supports and limits the PCB through a support mechanism. When grinding the PCB edge, a cooling fan provides air cooling to the grinding area. At the same time, the grinding rod adopts a three-section structure to avoid continuous friction in one position. The above structure achieves a heat dissipation effect, avoiding continuous heat generation at the grinding position, which could lead to local overheating or uneven heat dissipation and affect the overall performance of the circuit board.

[0013] Compared with existing technologies, this double-layer PCB edge trimming device, when in use, places the PCB on the telescopic end of a pneumatic telescopic rod, starts the air pump, and causes the pneumatic telescopic rod to extend and retract vertically. Simultaneously, the first servo motor is activated, causing the support rod to drive the cooling fan to rotate around the base. This facilitates air cooling of the PCB, especially the area where the grinding components are grinding the PCB. Grinding dust is also collected through a dust cover, entering the inner side of the dust cover and then being discharged through a HEPA filter, thus concentrating and collecting the dust and preventing dust splashing. A first groove facilitates the collection of the base, the first servo motor, the support rod, and the cooling fan. The rotating table can also drive several sets of pneumatic telescopic rods to rotate, adjusting the grinding position of the PCB. The cooling fan provides air cooling to the grinding area, preventing continuous heat generation that could lead to localized overheating or uneven heat dissipation, thus affecting the overall performance of the circuit board.

[0014] Compared with existing technologies, this double-layer PCB edge trimming device, when in use, involves opening the cabinet door, placing the PCB inside the work cabinet, activating the robotic arm and drive motor in the polishing assembly, and simultaneously activating the positioning camera. A second servo motor drives the positioning camera to move around a fixed block, facilitating PCB positioning via the camera. This allows the robotic arm to drive the polishing rod at the output end of the drive motor to polish the PCB. Furthermore, a distance sensor detects the contact distance between the polishing rod and the PCB. Because the polishing rod has a three-section structure made of copper tubing, and each of the three sections has sandpaper of different roughness bonded to its outer surface, continuous friction on the same spot is avoided, preventing continuous polishing of the PCB and avoiding continuous heat generation at the polishing location. This prevents localized overheating or uneven heat dissipation, which could affect the overall performance of the circuit board, thus achieving a heat dissipation effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional first-view structural diagram of the work cabinet of this utility model.

[0016] Figure 2 This is a first-view structural schematic diagram of the work cabinet of this utility model in cross-section.

[0017] Figure 3 This is a three-dimensional structural diagram of the support platform of this utility model.

[0018] Figure 4 This is a three-dimensional second-view structural diagram of the work cabinet of this utility model.

[0019] Figure 5 This is a second-view structural schematic diagram of the work cabinet of this utility model in cross-section.

[0020] Figure 6 This utility model Figure 5 Schematic diagram of the structure at point A in the middle.

[0021] The attached diagram is labeled as follows: 1. Frame; 2. Cabinet; 3. Cabinet door; 4. Grinding assembly; 41. Robotic arm; 42. Mounting bracket; 43. Drive motor; 44. Drive shaft; 45. Grinding rod; 46. Distance sensor; 5. Support mechanism; 51. Support platform; 52. Rotary table; 53. Pneumatic telescopic rod; 54. First groove; 55. Second groove; 56. Base; 57. First servo motor; 58. Support rod; 59. Cooling fan; 510. Dust cover; 511. Air pump; 6. Fixing block; 7. Second servo motor; 8. Positioning camera; 9. Exhaust port; 10. HEPA filter. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] As attached Figures 1 to 6The illustrated double-layer PCB edge trimming device includes a frame 1, a work cabinet 2, a cabinet door 3, a grinding assembly 4, and a support mechanism 5. The work cabinet 2 is mounted on the upper surface of the frame 1, and the cabinet door 3 is hinged to the side surface of the work cabinet 2. The cabinet door 3 is opened using the hinges to place the PCB inside the work cabinet 2. The grinding assembly 4 is located inside the work cabinet 2, and the support mechanism 5 is positioned directly below the grinding assembly 4. The support mechanism 5 includes a support platform 51 and a rotating platform 52. The support platform 51 is mounted on the upper surface of the inner side of the work cabinet 2, and the rotating platform 52 is embedded in the center of the support platform 51. A pneumatic telescopic rod 53 is mounted on the upper surface of the rotating platform 52, and the pneumatic telescopic rod 53 extends from the top. The rod 53 extends to the inner side of the rotary table 52, and the telescopic end of the pneumatic telescopic rod 53 is provided with an anti-slip pad to support and limit the PCB using the pneumatic telescopic rod 53. The PCB is placed on the telescopic end of the pneumatic telescopic rod 53. A first groove 54 is carved out on one side of the rotary table 52, and a second groove 55 is carved out on the side of the rotary table 52 away from the first groove 54. A base 56 is provided inside the first groove 54, and a support rod 58 is connected to one corner of the base 56 through a first servo motor 57. A cooling fan 59 is provided at the end of the support rod 58 away from the first servo motor 57 to provide air cooling for the polishing area. The first servo motor 58 is started. 7. The support rod 58 drives the cooling fan 59 to rotate around the base 56, facilitating air cooling of the PCB by the cooling fan 59 and cooling the area where the grinding component 4 grinds the PCB. A dust cover 510 is provided at the edge of the second groove 55. An air pump 511 is located on the bottom surface of the work cabinet 2. Activating the air pump 511 allows the pneumatic telescopic rod 53 to extend and retract vertically. The frame 1 is connected to the work cabinet 2 by detachable bolts, and a PLC controller is arranged on the bottom surface of the work cabinet 2. The rotary table 52, pneumatic telescopic rod 53, first servo motor 57, cooling fan 59, and air pump 511 are electrically connected to the PLC controller. The rotary table 52, the first groove 55, and the first groove 56 are all connected to the PLC controller. 4. Both the first groove 54 and the second groove 55 are installed on the upper end face of the support platform 51, and the first groove 54 and the second groove 55 extend to the inner side of the rotary table 52. The pneumatic telescopic rod 53 forms a rotating structure around the center of the rotary table 52 through the rotary table 52 and the support platform 51. The rotary table 52 can also drive several sets of pneumatic telescopic rods 53 to rotate so as to adjust the grinding position of the PCB. The support rod 58 forms a rotating structure around the center of the output shaft of the first servo motor 57 through the first servo motor 57 and the base 56. The pneumatic telescopic rod 53 is connected to the air pump 511 through the air pipe. Several sets of pneumatic telescopic rods 53 are provided, and the several sets of pneumatic telescopic rods 53 are evenly and symmetrically arranged. A fixing block 6 is provided on the side wall of the work cabinet 2. A positioning camera 8 is connected to the side of the fixing block 6 away from the work cabinet 2 via a second servo motor 7. Activating the positioning camera 8 causes the second servo motor 7 to move the positioning camera 8 around the fixing block 6, facilitating the positioning of the PCB. This allows the robotic arm 41 to drive the grinding rod 45 at the output end of the drive motor 43 to grind the PCB. An exhaust port 9 is provided on the upper surface of the work cabinet 2 to facilitate ventilation between the work cabinet 2 and the external environment. A dust cover 510 collects dust, and a HEPA filter 10 is provided on the side wall of the dust cover 510, through which grinding dust passes. Dust is collected by a dust cover 510. Dust enters the inside of the dust cover 510 and then passes through the HEPA filter 10, thus concentrating and collecting the dust to prevent dust from splashing. The positioning camera 8 forms a rotating structure around the output shaft center of the second servo motor 7 via the second servo motor 7 and the fixed block 6. The work cabinet 2 is connected to the top of the work cabinet 2 via the exhaust port 9. The grinding assembly 4 includes a robotic arm 41 and a mounting bracket 42. The robotic arm 41 is mounted on the top surface inside the work cabinet 2, and the moving end of the robotic arm 41 is provided with the mounting bracket 42. A drive motor 43 is provided on the side of the mounting bracket 42 away from the robotic arm 41 to start the robotic arm 41 in the grinding assembly 4. 1. A drive motor 43 is connected to a grinding rod 45 via a transmission shaft 44. A distance sensor 46 is installed on the bottom surface of the mounting bracket 42 to detect the distance between the grinding rod 45 and the PCB. The drive motor 43 and the grinding rod 45 form a rod drive structure via the transmission shaft 44. Since the grinding rod 45 has a three-section structure and is made of copper tubing, and different roughness sandpaper is bonded to the outer surfaces of the three sections of the grinding rod 45, continuous friction is avoided on the same position on the outer surface of the grinding rod 45, preventing continuous grinding of the PCB and avoiding continuous heat generation at the grinding position, which could lead to local overheating or heat dissipation issues. Unevenness affects the overall performance of the circuit board and has a heat dissipation effect. The robotic arm 41 and the distance sensor 46 are electrically connected to the PLC controller. In this embodiment, the robotic arm 41, drive motor 43, distance sensor 46, rotary table 52, pneumatic telescopic rod 53, first servo motor 57, cooling fan 59 and air pump 511, second servo motor 7, positioning camera 8 and HEPA filter 10 are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here we are only using them and have not made any structural or functional improvements. We will not go into details here.

[0024] The working process of this utility model is as follows: First, open the cabinet door 3, place the PCB inside the work cabinet 2, place the PCB at the telescopic end of the pneumatic telescopic rod 53, start the air pump 511, the air pump 511 causes the pneumatic telescopic rod 53 to extend and retract up and down, start the robotic arm 41 and drive motor 43 in the polishing assembly 4, start the positioning camera 8, the second servo motor 7 drives the positioning camera 8 to move around the fixed block 6 in order to position the PCB, and the robotic arm 41 drives the polishing rod 45 at the output end of the drive motor 43 to polish the PCB. The distance between the polishing rod 45 and the PCB is detected by the distance sensor 46. Since the polishing rod 45 has a three-section structure and is made of copper tube, and the outer surfaces of the three-section polishing rod 45 are respectively bonded with different coarseness The use of coarse sandpaper prevents continuous friction on the same spot on the outer surface of the grinding rod 45, thus avoiding continuous grinding of the PCB. The first servo motor 57 is activated, which causes the support rod 58 to drive the cooling fan 59 to rotate around the base 56. The cooling fan 59 provides air cooling for the PCB, and the grinding dust is collected through the dust cover 510. The dust enters the inner side of the dust cover 510 and then passes through the HEPA filter 10 for centralized collection. The rotating table 52 can also drive several sets of pneumatic telescopic rods 53 to rotate, so as to adjust the grinding position of the PCB. The cooling fan 59 provides air cooling for the grinding area. In summary, this solves the problem of "continuous heat generation at the grinding position, resulting in local overheating or uneven heat dissipation, affecting the overall performance of the circuit board".

Claims

1. A double-layer PCB edge trimming device, comprising a frame (1), a work cabinet (2), a cabinet door (3), a grinding assembly (4), and a support mechanism (5), characterized in that: The upper end face of the frame (1) is provided with a work cabinet (2), and the side end face of the work cabinet (2) is connected with a cabinet door (3) by a hinge. The inner cavity of the work cabinet (2) is provided with a grinding component (4), and a support mechanism (5) is provided directly below the grinding component (4). The support mechanism (5) includes a support platform (51) and a rotating platform (52). The support platform (51) is installed on the upper surface of the inner side of the work cabinet (2), and the rotating platform (52) is embedded in the center of the support platform (51). A pneumatic telescopic rod (53) is provided on the upper surface of the rotating platform (52), and the pneumatic telescopic rod (53) extends to the inner side of the rotating platform (52). A first groove (54) is dug on one side of the rotating platform (52), and a second groove (55) is dug on the side of the rotating platform (52) away from the first groove (54). A base (56) is provided on the inner side of the first groove (54), and a support rod (58) is connected to one corner of the base (56) through a first servo motor (57). A cooling fan (59) is provided on the end of the support rod (58) away from the first servo motor (57). A dust cover (510) is provided at the edge of the second groove (55), and an air pump (511) is provided on the bottom surface of the work cabinet (2).

2. The double-layer PCB edge trimming device according to claim 1, characterized in that: The side wall of the work cabinet (2) is provided with a fixing block (6), and the side of the fixing block (6) away from the work cabinet (2) is connected to a positioning camera (8) via a second servo motor (7). The upper surface of the work cabinet (2) is provided with an exhaust port (9), and the side wall of the dust cover (510) is provided with a HEPA filter (10).

3. The double-layer PCB edge trimming device according to claim 1, characterized in that: The polishing assembly (4) includes a robotic arm (41) and a mounting frame (42). The robotic arm (41) is mounted on the top surface inside the work cabinet (2), and the moving end of the robotic arm (41) is provided with a mounting frame (42). A drive motor (43) is provided on the side of the mounting frame (42) away from the robotic arm (41), and the output end of the drive motor (43) is connected to a polishing rod (45) through a transmission shaft (44). A distance sensor (46) is provided on the bottom surface of the mounting frame (42).

4. The double-layer PCB edge trimming device according to claim 1, characterized in that: The frame (1) is connected to the work cabinet (2) by detachable bolts, and a PLC controller is arranged on the bottom surface of the work cabinet (2). The rotary table (52), pneumatic telescopic rod (53), first servo motor (57), cooling fan (59) and air pump (511) are electrically connected to the PLC controller.

5. The double-layer PCB edge trimming device according to claim 1, characterized in that: The rotating platform (52), the first groove (54) and the second groove (55) are all installed on the upper surface of the support platform (51), and the first groove (54) and the second groove (55) extend to the inner side of the rotating platform (52). The pneumatic telescopic rod (53) forms a rotating structure around the center of the rotating platform (52) through the rotating platform (52) and the support platform (51).

6. The double-layer PCB edge trimming device according to claim 1, characterized in that: The support rod (58) forms a rotating structure around the output shaft center of the first servo motor (57) and the base (56) through the first servo motor (57). The pneumatic telescopic rod (53) is connected to the air pump (511) through the air pipe. Several sets of the pneumatic telescopic rod (53) are provided, and the several sets of the pneumatic telescopic rod (53) are evenly and symmetrically arranged.

7. The double-layer PCB edge trimming device according to claim 2, characterized in that: The positioning camera (8) forms a rotating structure around the output shaft center of the second servo motor (7) and the fixed block (6) through the second servo motor (7). The work cabinet (2) forms a communication structure with the top of the work cabinet (2) through the exhaust port (9).

8. The double-layer PCB edge trimming device according to claim 3, characterized in that: The drive motor (43) forms a rod transmission structure with the grinding rod (45) through the transmission shaft (44). The grinding rod (45) has a three-section structure and is made of copper tube. The outer surfaces of the three-section grinding rod (45) are respectively bonded with sandpaper of different roughness. The robotic arm (41) and the distance sensor (46) are electrically connected to the PLC controller.

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