A grinding apparatus for pretreatment of circuit boards

Abstract

This utility model belongs to the field of circuit board manufacturing, and in particular, it is a grinding device for circuit board pretreatment. Addressing the problems of existing grinding methods that cannot effectively grind circuit boards of different sizes, and where the use of a fan to blow grinding debris causes it to scatter, making collection inconvenient and posing safety hazards, the following solution is proposed. It includes a working plate and a top plate. Rectangular holes are provided on both sides of the working plate, and support rods are fixedly connected to the four corners of the top of the working plate. The four corners of the bottom of the top plate are also fixedly connected to the tops of the four support rods. Operators can flexibly adjust the grinding rollers according to the actual size and position of the circuit board using a controller, enabling the device to adapt to the grinding needs of circuit boards of different specifications. Furthermore, it reduces debris splashing and pollution of the working environment, improving the working conditions for operators.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, and in particular to a grinding device for circuit board pretreatment. Background Technology

[0002] Printed circuits are generally defined as conductive patterns, printed circuit lines, printed components, or a combination of both, fabricated on insulating materials according to a predetermined design. Conductive patterns on insulating substrates that provide electrical connections between components are called printed circuit lines. Thus, the finished board of printed circuits or printed circuit lines is called a printed circuit board, also known as a printed circuit board or printed circuit. The grinding equipment for pre-processing printed circuit boards is a key piece of equipment in the electronics manufacturing industry to ensure the processing quality of printed circuit boards. Its core function is to remove burrs and other imperfections from the edges of the printed circuit board through physical friction.

[0003] A search revealed that patent CN117584035B discloses a grinding device and grinding method for circuit board pretreatment.

[0004] However, the above technical solution has the following problems: when grinding circuit boards, it cannot effectively grind circuit boards of different sizes, and the grinding waste is blown by a fan, which makes the waste scatter everywhere, making it inconvenient to collect and posing a safety hazard. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to effectively grind circuit boards of different sizes, the tendency for grinding debris to scatter due to fan blowing, the difficulty in collection, and the safety hazards. This invention proposes a grinding device for circuit board pretreatment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A grinding device for pre-processing circuit boards includes a working plate and a top plate. Rectangular holes are provided on both sides of the working plate. Support rods are fixedly connected to the four top corners of the working plate. The four bottom corners of the top plate are fixedly connected to the top ends of four support rods. Support columns are fixedly connected to the four bottom corners of the working plate. A fixing mechanism for pressing the circuit board is provided on the top plate. An adjustment mechanism for grinding circuit boards of different sizes is provided at the bottom of the top plate. A grinding mechanism is provided on the adjustment mechanism. A dust collection mechanism for absorbing waste is provided on the working plate.

[0007] In one possible design, the fixing mechanism includes a first electric telescopic rod, two positioning rods, and a pressure plate. The fixed end of the first electric telescopic rod is fixedly connected to the bottom center of the top plate, and the telescopic end of the first electric telescopic rod is fixedly connected to the top center of the pressure plate. The bottom ends of the two positioning rods are respectively fixedly connected to the top two sides of the same pressure plate. The top ends of the two positioning rods slide through the bottom of the same top plate and extend to the top of the top plate, and are fixedly connected to a limit plate. An anti-slip pad is fixedly provided on the bottom of the pressure plate.

[0008] In one possible design, the adjustment mechanism includes two side plates, two second-generation electric telescopic rods, two moving blocks, two first-generation motors, two lead screws, and two base blocks. The tops of the two side plates are fixedly connected to the bottom sides of the top plate, respectively. The fixed ends of the two second-generation electric telescopic rods are fixedly connected to the sides of the two side plates that are close to each other. The telescopic ends of the two second-generation electric telescopic rods are fixedly connected to the sides of the two moving blocks that are far from each other. The tops of the two moving blocks are slidably connected to the bottom sides of the same top plate, respectively. A first-generation plate is fixedly connected to the bottom sides of each of the two moving blocks. The two ends of the two lead screws are rotatably connected to one side of the four first-generation plates through bearings. One side of each of the two first-generation motors is fixedly connected to the outer side of the two first-generation plates through bolts, and the output shaft of the first-generation motor rotates through the first-generation plate and is fixedly connected to one end of the lead screw. The two base blocks are threaded onto the two lead screws, and their tops are slidably connected to the bottom of the two moving blocks, respectively.

[0009] In one possible design, the grinding mechanism includes two U-shaped frames, two secondary motors, and two grinding rollers. The two U-shaped frames are respectively fixed to the bottom of two base blocks by bolts. The two secondary motors are respectively fixed to the inner walls of the two U-shaped frames by bolts. The output shafts of the two secondary motors rotate through the U-shaped frames and are fixedly connected to the top of the grinding rollers. The top of the grinding rollers is rotatably connected to the center of the bottom of the two U-shaped frames.

[0010] In one possible design, the vacuuming mechanism includes two storage boxes, two primary filters, two bottom tubes, two connecting tubes, two inner plates, and two fans. The two storage boxes are respectively fixedly mounted on the bottom sides of the same working plate and located below two rectangular holes. The two primary filters are respectively fixedly mounted on the inner walls of the two storage boxes by bolts. The top of each of the two bottom tubes is fixedly connected to three pipes, which are respectively connected to the bottom of the two storage boxes and communicate with each other. The two connecting tubes are respectively fixedly mounted on the bottom of the two bottom tubes and communicate with each other. The two inner plates are respectively fixedly mounted on the inner walls of the two connecting tubes by bolts and each has a round hole. The two fans are respectively fixedly mounted on the inner walls of the two round holes by bolts.

[0011] In one possible design, the inner walls of the bottom ends of both connecting pipes are fitted with second filters to prevent foreign objects from entering, which are fixed by bolts.

[0012] In one possible design, connecting plates are fixedly connected to the front and rear sides of both storage boxes, and all four connecting plates are fixedly connected to the bottom of the same working plate by bolts.

[0013] In this application, during use, the circuit board to be pre-treated is placed at the top center of the work plate. The controller controls the first electric telescopic rod, and the telescopic end of the first electric telescopic rod starts to work, driving the pressure plate to move downward. Two positioning rods slide on the top plate, playing a guiding role and ensuring that the pressure plate descends smoothly. When the pressure plate presses on the circuit board, the anti-slip pad increases the friction between the pressure plate and the circuit board, stably fixing the circuit board on the work plate and preventing the circuit board from moving during the grinding process. The controller controls the two second electric telescopic rods, and the telescopic ends of the second electric telescopic rods extend and retract, pushing the two moving blocks to slide in the groove at the bottom of the top plate, thereby adjusting the horizontal position of the two grinding rollers to meet the needs of circuit boards of different sizes. The controller controls the two first motors to be powered on, and the output shaft of the first motor drives the lead screw to rotate. Since the bottom block is threadedly connected to the lead screw and the bottom of the bottom block is slidably connected to the bottom of the moving block, the rotation of the lead screw will cause the bottom block to slide at the bottom of the moving block. The controller also controls the two second motors, and the output shaft of the second motor drives the grinding roller to rotate through the coupling, thereby driving the grinding roller to grind the edge of the circuit board.

[0014] During the grinding process, the controller controls two fans. The rotation of the fans creates negative pressure in the connecting pipe, bottom pipe, and storage box. Under the action of negative pressure, the waste generated during the grinding process is sucked into the storage box through the rectangular holes on both sides of the working plate. The first filter screen blocks the waste from entering the fan, and the second filter screen prevents foreign objects from entering the connecting pipe, ensuring the normal operation of the dust collection mechanism.

[0015] The beneficial effects of this utility model are as follows: In this invention, the fixing mechanism, through the cooperation of the No. 1 electric telescopic rod and the pressure plate, can accurately fix the circuit board on the working plate. The anti-slip pad further enhances the stability of the fixing, effectively preventing the circuit board from moving due to force during the grinding process, thus ensuring the quality and precision of the grinding.

[0016] The adjustment mechanism uses a No. 2 electric telescopic rod to control the horizontal position of the grinding roller. Operators can flexibly adjust the grinding roller according to the actual size and position of the circuit board through the controller, so that the device can adapt to the grinding needs of circuit boards of different specifications, thus improving the versatility and flexibility of the device.

[0017] The dust collection mechanism can suck the waste generated during the grinding process into the collection box, reducing the pollution caused by waste splashing to the working environment and improving the working conditions of the operators. The setting of No. 1 and No. 2 filters not only ensures the normal operation of the dust collection mechanism, but also extends the service life of the device and reduces maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the fixing structure of this utility model; Figure 3 This is a schematic diagram of the adjustment structure of this utility model; Figure 4 This is an exploded view of the dust collection structure of this utility model; Figure 5 This is an enlarged schematic diagram of part A of the present invention.

[0019] In the diagram: 1. Working plate; 2. Top plate; 3. Side plate; 4. Rectangular hole; 5. Positioning rod; 6. Electric telescopic rod No. 1; 7. Pressure plate; 8. Electric telescopic rod No. 2; 9. Moving block; 10. Motor No. 1; 11. Lead screw; 12. Bottom block; 13. Motor No. 2; 14. U-shaped frame; 15. Grinding roller; 16. Storage box; 17. Connecting plate; 18. Filter No. 1; 19. Bottom tube; 20. Connecting tube; 21. Inner plate; 22. Fan; 23. Filter No. 2. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0021] Reference Figures 1-5 A grinding device includes a working plate 1 and a top plate 2. Four support columns are fixed to the four bottom corners of the working plate 1 by welding or bolting to provide stable support. Then, the bottom ends of the four support rods are fixed to the four top corners of the working plate 1 by welding or bolting. Finally, the four bottom corners of the top plate 2 are fixed to the top ends of the four support rods by welding or bolting, thus completing the construction of the main frame of the device.

[0022] The fixed end of the first electric telescopic rod 6 is fixed to the bottom center of the top plate 2 with bolts. The top center of the pressure plate 7 is connected to the telescopic end of the first electric telescopic rod 6 with bolts. The bottom ends of the two positioning rods 5 are fixed to the top sides of the pressure plate 7 by welding or bolting. The top ends of the two positioning rods 5 slide through the bottom of the top plate 2 and extend to the top of the top plate 2. Then, a limiting plate is fixedly connected to the top of the positioning rods 5 to prevent the positioning rods 5 from sliding out. Finally, an anti-slip pad is fixedly installed at the bottom of the pressure plate 7 by adhesive or bolting.

[0023] The tops of the two side plates 3 are fixed to the bottom sides of the top plate 2 by welding or bolting. The fixed ends of the two second electric telescopic rods 8 are fixed to the side of the two side plates 3 that are close to each other by bolting. The telescopic ends of the two second electric telescopic rods 8 are fixed to the side of the two moving blocks 9 that are far away by bolting. Slide grooves are opened on both sides of the bottom of the top plate 2. The tops of the two moving blocks 9 are slidably connected to the slide grooves by sliders, so that the tops of the two moving blocks 9 are slidably connected to the bottom sides of the same top plate 2. The first plate is fixed to the bottom sides of the two moving blocks 9 by welding or bolting. The two ends of the two lead screws 11 are rotatably connected to one side of the four first plates by bearings. The one side of the two first motors 10 is fixedly connected to the outside of the two first plates by bolting. The output shaft of the first motor 10 rotates through the first plate and is fixedly connected to one end of the lead screw 11 by a coupling. The two bottom blocks 12 are threaded onto the two lead screws 11, and the tops of the two bottom blocks 12 are slidably connected to the bottoms of the two moving blocks 9.

[0024] Two U-shaped frames 14 are fixed to the bottom of the two base blocks 12 by bolts. Two second motors 13 are fixed to the inner walls of the two U-shaped frames 14 by bolts. The output shafts of the two second motors 13 rotate through the U-shaped frames 14 and are fixedly connected to the top of the grinding roller 15 by a coupling. The top of the grinding roller 15 is rotatably connected to the bottom center of the two U-shaped frames 14 by bearings.

[0025] Two storage boxes 16 are respectively placed on the bottom sides of the work plate 1 and located below the two rectangular holes 4. Two No. 1 filters 18 are respectively fixed to the inner walls of the two storage boxes 16 by bolts. The tops of the two bottom tubes 19 are respectively fixedly connected to three pipes by welding. The three pipes are respectively connected to the bottom of the two storage boxes 16 and communicate with each other. Two connecting pipes 20 are respectively fixedly installed at the bottom of the two bottom tubes 19 by welding and communicate with each other. Inner plates 21 are respectively fixed to the inner walls of the two connecting pipes 20 by bolts, and round holes are opened on the inner plates 21. Two fans 22 are respectively fixed to the inner walls of the two round holes by bolts.

[0026] This application can be used in the field of circuit board manufacturing, or in other fields applicable to this application. Example 2

[0027] refer to Figures 1-5 Based on Embodiment 1, an improved grinding apparatus for circuit board pretreatment includes: Connecting plates 17 are fixed to the front and rear sides of the two storage boxes 16 by welding or bolting. All four connecting plates 17 are fixed to the bottom of the same working plate 1 by bolts. Second filter screens 23 are fixed to the inner walls of the bottom ends of the two connecting pipes 20 by bolts to prevent foreign objects from entering.

[0028] However, as is well known to those skilled in the art, the working principles and wiring methods of the No. 1 electric telescopic pole 6, the No. 2 electric telescopic pole 8, the No. 1 motor 10, the No. 2 motor 13, and the fan 22 are commonplace and belong to conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience. The No. 1 electric telescopic pole 6, the No. 2 electric telescopic pole 8, the No. 1 motor 10, the No. 2 motor 13, and the fan 22 are all connected to the controller fixedly installed on the top of the top plate 2 through wiring and are powered by an external power source.

[0029] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A polishing apparatus for pretreatment of a wiring board, characterized by comprising: The device includes a working plate (1) and a top plate (2). The working plate (1) has rectangular holes (4) on both sides. The top four corners of the working plate (1) are fixedly connected to support rods. The bottom four corners of the top plate (2) are fixedly connected to the top of the four support rods respectively. The bottom four corners of the working plate (1) are fixedly connected to support columns. The top plate (2) is provided with a fixing mechanism for pressing the circuit board. The bottom of the top plate (2) is provided with an adjustment mechanism for grinding circuit boards of different sizes. The adjustment mechanism is provided with a grinding mechanism. The working plate (1) is provided with a dust collection mechanism for collecting waste.

2. The polishing apparatus for pretreatment of a circuit board according to claim 1, wherein The fixing mechanism includes a first electric telescopic rod (6), two positioning rods (5) and a pressure plate (7). The fixed end of the first electric telescopic rod (6) is fixedly connected to the bottom center of the top plate (2). The telescopic end of the first electric telescopic rod (6) is fixedly connected to the top center of the pressure plate (7). The bottom ends of the two positioning rods (5) are respectively fixedly connected to the top two sides of the same pressure plate (7). The top ends of the two positioning rods (5) slide through the bottom of the same top plate (2) and extend to the top of the top plate (2) and are fixedly connected to a limit plate. The bottom of the pressure plate (7) is fixedly provided with an anti-slip pad.

3. The polishing apparatus for pretreatment of a circuit board according to claim 1, wherein The adjustment mechanism includes two side plates (3), two second-generation electric telescopic rods (8), two moving blocks (9), two first-generation motors (10), two lead screws (11), and two bottom blocks (12). The tops of the two side plates (3) are fixedly connected to the bottom sides of the top plate (2), respectively. The fixed ends of the two second-generation electric telescopic rods (8) are fixedly connected to the side of the two side plates (3) that is close to each other. The telescopic ends of the two second-generation electric telescopic rods (8) are fixedly connected to the side of the two moving blocks (9) that is far away from each other. The tops of the two moving blocks (9) are fixedly connected to the side of the two moving blocks (9) that is far away from each other. The bottom sides of a top plate (2) are slidably connected, and the bottom sides of the two moving blocks (9) are fixedly connected to a No. 1 plate. The two ends of the two screw rods (11) are rotatably connected to one side of the four No. 1 plates through bearings. The one side of the two No. 1 motors (10) is fixedly connected to the outside of the two No. 1 plates through bolts, and the output shaft of the No. 1 motor (10) rotates through the No. 1 plate and is fixedly connected to one end of the screw rod (11). The two bottom blocks (12) are threaded on the two screw rods (11) respectively, and their tops are slidably connected to the bottom of the two moving blocks (9).

4. The polishing apparatus for pretreatment of a circuit board according to claim 1, wherein The grinding mechanism includes two U-shaped frames (14), two second motors (13), and two grinding rollers (15). The two U-shaped frames (14) are respectively fixed to the bottom of the two base blocks (12) by bolts. The two second motors (13) are respectively fixed to the inner wall of the two U-shaped frames (14) by bolts. The output shafts of the two second motors (13) rotate through the U-shaped frames (14) and are fixedly connected to the top of the grinding rollers (15). The top of the grinding rollers (15) is rotatably connected to the bottom center of the two U-shaped frames (14).

5. The polishing apparatus for pretreatment of a circuit board according to claim 1, wherein The vacuuming mechanism includes two storage boxes (16), two No. 1 filters (18), two bottom tubes (19), two connecting tubes (20), two inner plates (21), and two fans (22). The two storage boxes (16) are respectively fixedly installed on the bottom sides of the same working plate (1) and located below the two rectangular holes (4). The two No. 1 filters (18) are respectively fixedly installed on the inner walls of the two storage boxes (16) by bolts. The top of the two bottom tubes (19) are each fixedly connected with three pipes. The three pipes are respectively connected to the bottom of the two storage boxes (16) and communicate with each other. The two connecting tubes (20) are respectively fixedly installed on the bottom of the two bottom tubes (19) and communicate with each other. The two inner plates (21) are respectively fixedly installed on the inner walls of the two connecting tubes (20) by bolts and each has a round hole. The two fans (22) are respectively fixedly installed on the inner walls of the two round holes by bolts.

6. The polishing apparatus for pretreatment of a circuit board according to claim 5, wherein The inner walls of the bottom ends of the two connecting pipes (20) are each fitted with a second filter screen (23) to prevent foreign objects from entering, which is fixed by bolts.

7. The polishing apparatus for pretreatment of a circuit board according to claim 5, wherein Both of the storage boxes (16) are fixedly connected to the front and rear sides with connecting plates (17), and all four connecting plates (17) are fixedly connected to the bottom of the same working plate (1) by bolts.

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