Multilateral grinding device for PCB (printed circuit board)

Abstract

The invention belongs to the technical field of plate grinding, and particularly discloses a PCB multilateral grinding device which comprises a conveying belt, four first side frames are arranged on one side of the conveying belt, a grinding mechanism is arranged in each first side frame, and each grinding mechanism comprises a positioning frame. And six movable bins are evenly formed in the surface of the positioning frame, lifting mechanisms are arranged in the movable bins and matched with the polished rods, and six sweeping mechanisms are evenly arranged at the top end of the interior of the first side frame. Through the lifting mechanism, the polishing rod can move up and down while rotating, polishing of the end of a plate can be more accurate, in the upward moving process of the polishing rod, the cleaning mechanism can be driven to work, and the cleaning mechanism can clean dust generated by polishing of the surface of the plate.

Description

Technical Field

[0001] The invention belongs to the field of plate polishing, and specifically discloses a multilateral polishing device for a PCB circuit board. Background Art

[0002] PCB circuit boards are an indispensable part of electronic devices, mainly used for electrical connections of electronic components. It forms electrical connections between electronic components by laying conductive copper foil patterned on insulating materials. The main function of PCB boards is to provide electrical connections for electronic components and to support components fixed on the board. Fiberglass board is a material made of glass fiber and epoxy resin interwoven with each other. It has the advantages of low cost and easy processing, and has good electrical performance. It is an ideal material for PCB boards. In industrial production, the processing of fiberglass boards requires grinding of all four edges.

[0003] The existing multilateral grinding device usually uses a conveyor belt to drive the material to move on the surface of the grinding rod, so as to achieve the grinding of the end of the material. However, this method makes the end of the material not ground evenly and the grinding accuracy is also low, which affects the processing quality. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a multilateral grinding device for a PCB circuit board to solve the problem that the prior art usually uses a conveyor belt to drive the material to move on the surface of a grinding rod to achieve grinding of the end of the material, but this method makes the end of the material not ground evenly and the grinding accuracy is also low, affecting the processing quality.

[0005] To achieve the above purpose, the present invention provides a multilateral grinding device for a PCB circuit board, comprising a conveyor belt, four first side frames are arranged on one side of the conveyor belt, a grinding mechanism is arranged inside the first side frame, the grinding mechanism comprises a positioning frame, the positioning frame is fixedly installed on the inner wall of the first side frame, a top plate and a bottom plate are fixedly installed on the upper and lower end surfaces of the positioning frame close to the conveyor belt, six gears are arranged and installed on the upper surface of the bottom plate through a rotating shaft, and two adjacent gears are meshed, a polished rod is fixedly arranged at the center of the top of the gear, a rectangular rod is fixedly arranged on the top of the polished rod, a polishing rod is movably sleeved on the surface of the rectangular rod, and the surface of the polishing rod movably passes through the top plate, six movable bins are evenly opened on the surface of the positioning frame, and the six movable bins correspond to the six polished rods respectively, a lifting mechanism is arranged inside the movable bin, and the lifting mechanism cooperates with the polished rod, and six cleaning mechanisms are evenly arranged on the top of the first side frame, and the six cleaning mechanisms correspond to the six polishing rods respectively.

[0006] In the above technical solution, preferably, the lifting mechanism includes a tray, the tray is movably sleeved on the surface of the polished rod, the top of the tray is provided with a T-shaped slot, the bottom of the polishing rod is provided with a T-shaped slider slidably installed in the T-shaped slot, the two ends of the bottom of the tray are fixedly provided with side plates, the inner walls of the side plates are fixedly provided with cylinders, the inner wall of the movable warehouse is provided with a connecting shaft through a rotating shaft, the end of the connecting shaft is fixedly provided with a first connecting rod, the other end of the first connecting rod is provided with a sliding groove, the sliding groove is slidably clamped on the surface of the cylinder, A second connecting rod is fixedly arranged in the middle of the connecting shaft, and the second connecting rod and the first connecting rod are L-shaped. A movable groove is opened in the middle end of the bottom of the second connecting rod, and a limiting groove is opened on the inner wall of the movable groove. A limiting rod is slidably arranged between the two limiting grooves, and a push-pull rod is arranged on the surface of the limiting rod. The surface of the push-pull rod passes through the bottom of the movable bin, and a convex column is installed on the other end of the push-pull rod. An auxiliary disk is fixedly arranged on the bottom surface of the gear, and an elliptical groove is opened on the surface of the auxiliary disk. The surface of the convex column is slidably arranged in the elliptical groove.

[0007] In the above technical solution, preferably, a flat plate is provided on the surface of the first side frame close to the conveyor belt, a stabilizing roller is provided on the surface of the flat plate, and the stabilizing roller is located between the conveyor belt and the grinding mechanism.

[0008] In the above technical solution, preferably, the cleaning mechanism includes a support plate, which is fixedly mounted on the inner wall of the first side frame, and the support plate is above the polishing rod, an L-shaped rod is arranged above the polishing rod, the bending part of the L-shaped rod is connected to the support plate through a rotating shaft, a swing plate is fixedly mounted on one end of the L-shaped rod, a brush is arranged on the other end of the swing plate, the swing plate is located between the stabilizing roller and the polishing rod, and the other end of the L-shaped rod is directly above the polishing rod.

[0009] In the above technical solution, preferably, a stepper motor is installed at the bottom of the base plate by bolts, and the output end of the stepper motor is connected to one of the gears.

[0010] In the above technical solution, preferably, a second side frame is provided at the front end of each first side frame, a notch is provided on the surface of the second side frame close to the conveyor belt, a cylinder is provided inside the second side frame, a horizontal plate is installed at the output end of the cylinder, an extrusion block is provided on the top of the horizontal plate, the surface of the extrusion block passes through the notch, a turntable is installed on the top of the notch, and a disc is rotatably provided on the top of the horizontal plate.

[0011] In the above technical solution, preferably, two through holes are provided on the outer surface of the first side frame, and the two through holes are respectively connected to suction pipes.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a lifting mechanism, the grinding rod can move up and down while rotating, ensuring that all parts of the plate end can be evenly polished, thereby improving processing accuracy and stability, greatly improving production efficiency and ensuring processing quality; 2. When the grinding rod moves upward, it will drive the cleaning mechanism to work. The cleaning mechanism can clean the dust generated by grinding the surface of the plate. It can quickly deal with the generated dust, reduce the diffusion of dust in the air, keep the working area clean, and improve the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the conveyor belt of the present invention; Figure 3 For the present invention Figure 2 Another perspective structural diagram; Figure 4 It is a schematic diagram of the structure of the grinding mechanism of the present invention; Figure 5 It is a schematic structural diagram of the grinding mechanism of the present invention from another perspective; Figure 6 It is a schematic diagram of the lifting mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the grinding rod of the present invention; Figure 8 For the present invention Figure 6 The enlarged view of point A in the middle; Fig. 9 For the present invention Figure 5 The enlarged view of point B in the middle; Fig.10 A side cross-sectional view of a conveyor belt of the present invention; Fig.11 For the present invention Fig.10 Enlarged view of point C in the middle; Fig.12 It is a schematic diagram of the internal structure of the second side frame of the present invention.

[0014] In the figure: 1. Conveyor belt; 2. First side frame; 3. Stabilizing roller; 4. Grinding mechanism; 5. Positioning frame; 6. Bottom plate; 7. Top plate; 8. Gear; 9. Polished rod; 10. Grinding rod; 11. Stepper motor; 12. Movable bin; 13. Lifting mechanism; 14. Tray; 15. Side plate; 16. First connecting rod; 17. Connecting shaft; 18. Second connecting rod; 19. Movable groove; 20. Limiting groove; 21. Push-pull rod; 22. Boss; 23. Auxiliary plate; 24. Elliptical groove; 25. Cleaning mechanism; 26. L-shaped rod; 27. Support plate; 28. Swinging plate; 29. ​​Brush; 30. Second side frame; 31. Cylinder; 32. Horizontal plate; 33. Extrusion block; 34. Turntable. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] like Figure 1 - Fig.12 A multilateral grinding device for a PCB circuit board shown in the figure comprises a conveyor belt 1, four first side frames 2 are arranged on one side of the conveyor belt 1, a grinding mechanism 4 is arranged inside the first side frame 2, the grinding mechanism 4 comprises a positioning frame 5, the positioning frame 5 is fixedly installed on the inner wall of the first side frame 2, a top plate 7 and a bottom plate 6 are respectively fixedly installed on the upper and lower end surfaces of the positioning frame 5 close to the conveyor belt 1, six gears 8 are arranged on the upper surface of the bottom plate 6 through a rotating shaft, and two adjacent gears 8 are meshed, a polished rod 9 is fixedly arranged at the center of the top of the gear 8, a rectangular rod is fixedly arranged on the top of the polished rod 9, a polishing rod 10 is movably sleeved on the surface of the rectangular rod, and the surface of the polishing rod 10 movably passes through the top plate 7, and six uniformly opened on the surface of the positioning frame 5 A movable bin 12, six movable bins 12 correspond to six polished rods 9 respectively, a lifting mechanism 13 is arranged inside the movable bin 12, the lifting mechanism 13 cooperates with the polished rod 9, six cleaning mechanisms 25 are evenly arranged at the top of the inside of the first side frame 2, the six cleaning mechanisms 25 correspond to six polishing rods 10 respectively, when the gear 8 drives the polished rod 9 to rotate, the polished rod 9 will also drive the polishing rod 10 to rotate through the rectangular rod, and at the same time, by setting the lifting mechanism 13, the polishing rod 10 will move up and down while rotating, so that the polishing of the plate end can be more precise, and in the process of the polishing rod 10 moving upward, it will drive the cleaning mechanism 25 to work, and the cleaning mechanism 25 can clean the dust generated by the polishing of the plate surface.

[0018] The lifting mechanism 13 includes a tray 14, which is movably sleeved on the surface of the polished rod 9. A T-shaped slot is provided on the top of the tray 14, and a T-shaped slider is provided at the bottom of the polishing rod 10 to be slidably installed in the T-shaped slot, so that the tray 14 is connected to the polishing rod 10. During the up and down movement of the tray 14, the polishing rod 10 can also be driven to move up and down. Side plates 15 are fixedly provided at both ends of the bottom of the tray 14, and a cylinder is fixedly provided on the inner wall of the side plate 15. A connecting shaft 17 is installed on the inner wall of the movable bin 12 through a rotating shaft, and a first connecting rod 1 is fixedly installed at the end of the connecting shaft 17 6. A slide groove is provided at the other end of the first connecting rod 16, and the slide groove is slidably connected to the cylindrical surface. A second connecting rod 18 is fixedly provided at the middle of the connecting shaft 17. The second connecting rod 18 and the first connecting rod 16 are L-shaped. A movable groove 19 is provided at the middle end of the bottom of the second connecting rod 18. A limit groove 20 is provided on the inner wall of the movable groove 19. A limit rod is slidably provided between the two limit grooves 20. A push-pull rod 21 is provided on the surface of the limit rod. The surface of the push-pull rod 21 passes through the bottom of the movable bin 12. A convex column 22 is installed at the other end of the push-pull rod 21. An auxiliary disk 23 is fixedly provided on the bottom surface of the gear 8. The surface of the auxiliary disk 23 is provided with an elliptical groove 24, and the surface of the boss 22 is slidably arranged in the elliptical groove 24. When the gear 8 rotates, the auxiliary disk 23 at the bottom thereof will rotate synchronously, and the boss 22 will slide inside the elliptical groove 24, so that the boss 22 can drive the push-pull rod 21 to make a linear reciprocating motion. When the push-pull rod 21 is pushed into the movable bin 12, the push-pull rod 21 will push the limit rod, so that the bottom of the second connecting rod 18 moves deeper into the movable bin 12, and the movement of the second connecting rod 18 will also drive the connecting shaft 17 to rotate counterclockwise, and the rotation of the connecting shaft 17 will cause the first connecting rod 1 6 moves downward, at this time the slide groove will push the cylinder downward, the tray 14 moves upward as a whole, and the tray 14 will also drive the grinding rod 10 to move downward, when the push-pull rod 21 is pulled toward the outside of the movable warehouse 12, the push-pull rod 21 will pull the limit rod, so that the bottom of the second connecting rod 18 moves toward the outside of the movable warehouse 12, and the movement of the second connecting rod 18 will also drive the connecting shaft 17 to rotate clockwise, and the rotation of the connecting shaft 17 will cause the other end of the first connecting rod 16 to move upward, at this time the slide groove will push the cylinder upward, the tray 14 moves upward as a whole, and the tray 14 will also drive the grinding rod 10 to rise.

[0019] A flat plate is provided on the surface of the first side frame 2 close to the conveyor belt 1, and a stabilizing roller 3 is provided on the surface of the flat plate. The stabilizing roller 3 is located between the conveyor belt 1 and the grinding mechanism 4. The stabilizing roller 3 can press the end of the plate when the plate is transmitted, thereby playing a role of stability and ensuring the stability of the plate when the edge of the plate is being ground.

[0020] The cleaning mechanism 25 includes a support plate 27, which is fixedly mounted on the inner wall of the first side frame 2 and is located above the grinding rod 10. An L-shaped rod 26 is arranged above the grinding rod 10, and the bending part of the L-shaped rod 26 is connected to the support plate 27 through a rotating shaft. A swing plate 28 is fixedly mounted on one end of the L-shaped rod 26, and a brush 29 is arranged on the other end of the swing plate 28. The swing plate 28 is located between the stabilizing roller 3 and the grinding rod 10, and the other end of the L-shaped rod 26 is located directly above the grinding rod 10. When the grinding rod 10 moves upward, the top of the grinding rod 10 has an upward squeezing effect on one end of the L-shaped rod 26, so that the L-shaped rod 26 will rotate around the rotating shaft at the bending part, and the other end of the L-shaped rod 26 will drive the swing plate 28 to rotate, so that the swing plate 28 will drive the brush 29 to slide on the surface of the plate, so as to clean the dust generated by grinding the surface of the plate.

[0021] A stepper motor 11 is installed at the bottom of the base plate 6 by bolts. The output end of the stepper motor 11 is connected to one of the gears 8. The stepper motor 11 can drive the gears 8 to rotate. The rotation of one gear 8 will drive the other gears 8 to rotate.

[0022] A second side frame 30 is provided at the front end of each first side frame 2. A notch is provided on the surface of the second side frame 30 close to the conveyor belt 1. A cylinder 31 is provided inside the second side frame 30. A cross plate 32 is installed at the output end of the cylinder 31. An extrusion block 33 is provided on the top of the cross plate 32. The surface of the extrusion block 33 passes through the notch. A turntable 34 is installed on the top of the notch. A disc is rotatably provided on the top of the cross plate 32. When the conveyor belt 1 drives the plate to move, when the front end of the plate moves to the notch, the cylinder 31 will drive the cross plate 32 to rise, and the cross plate 32 will also drive the extrusion block 33 to move upward. The extrusion block 33 can lift one corner of the plate upward, and one corner of the plate is squeezed by the extrusion block 33 and the turntable 34. The conveyor belt 1 drives the other three end corners of the plate to move forward, and the plate as a whole will rotate under the rotation of the disc and the turntable 34, thereby realizing the side switching operation.

[0023] The outer surface of the first side frame 2 is provided with two through holes, and the two through holes are respectively connected with a suction pipe. The dust suction fan can absorb the dust generated by grinding through the suction pipe, remove the dust generated by grinding in real time, and keep the construction environment clean.

[0024] Working principle: first, place the plate on the conveyor belt 1 so that one side of the plate is stuck on the bottom of the stabilizing roller 3. At this time, the end of the plate is close to the grinding rod 10. Then, the stepper motor 11 can drive the gear 8 to rotate. The rotation of one gear 8 will drive the other gears 8 to rotate. When the gear 8 rotates, the polished rod 9 will also rotate. The polished rod 9 will also drive the grinding rod 10 to rotate through the rectangular rod. Then, when the gear 8 rotates, the auxiliary disk 23 at the bottom will rotate synchronously, and the boss 22 will slide inside the elliptical groove 24, so that the boss 22 can drive the push-pull rod 21 to do linear reciprocating motion. When the push-pull rod 21 is pushed toward the inside of the movable bin 12, the push-pull rod 21 will push the limiting rod, so that the bottom of the second connecting rod 18 moves toward the depth of the movable bin 12, and the movement of the second connecting rod 18 will also drive the connecting shaft 17 to rotate counterclockwise. The rotation of the connecting shaft 17 will cause the other end of the first connecting rod 16 to move downward. At this time, the slide groove will push the cylinder downward, and the tray 14 will drop as a whole. The tray 14 will also drive the grinding rod 10 to drop. When the push-pull rod 21 is pulled toward the outside of the movable bin 12, the push-pull rod 21 will pull the limiting rod, so that the bottom of the second connecting rod 18 moves toward the outside of the movable bin 12, and the movement of the second connecting rod 18 will also The connection shaft 17 will be driven to rotate clockwise, and the rotation of the connection shaft 17 will cause the other end of the first connecting rod 16 to move upward. At this time, the slide groove will push the cylinder upward, and the tray 14 will move upward as a whole. The tray 14 will also drive the grinding rod 10 to rise, so that the grinding rod 10 will move up and down while rotating, which can make the grinding of the end of the plate more accurate. Then, when the grinding rod 10 moves upward, the top of the grinding rod 10 has an upward pressing effect on one end of the L-shaped rod 26, so that the L-shaped rod 26 will rotate around the rotating shaft at the bend, and the other end of the L-shaped rod 26 will drive the swing plate 28 to rotate, so that the swing plate 28 will drive The brush 29 slides on the surface of the plate to clean the dust generated by grinding the surface of the plate. Finally, when the conveyor belt 1 drives the plate to move, when the front end of the plate moves to the notch, the cylinder 31 will drive the cross plate 32 to rise, and the cross plate 32 will also drive the extrusion block 33 to move upward. The extrusion block 33 can push one corner of the plate upward, and one corner of the plate is squeezed by the extrusion block 33 and the turntable 34. The conveyor belt 1 drives the other three end corners of the plate to move forward, and the plate as a whole will rotate under the rotation of the disc and the turntable 34, thereby realizing the side-changing operation. Repeating the above operation can grind the four sides of the plate.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A multi-sided polishing device for a PCB circuit board, comprising a conveyor belt (1), characterized in that: Four first side frames (2) are arranged on one side of the conveyor belt (1), a grinding mechanism (4) is arranged inside the first side frame (2), and the grinding mechanism (4) comprises a positioning frame (5), the positioning frame (5) is fixedly mounted on the inner wall of the first side frame (2), and the positioning frame (5) is respectively fixedly mounted with a top plate (7) and a bottom plate (6) on the upper and lower end surfaces close to the conveyor belt (1), six gears (8) are arranged on the upper surface of the bottom plate (6) via a rotating shaft, and two adjacent gears (8) are meshed with each other, and a polished rod (9) is fixedly mounted at the center of the top of the gear (8), and the polished rod (9) is A rectangular rod is fixedly arranged on the top, a grinding rod (10) is movably sleeved on the surface of the rectangular rod, and the surface of the grinding rod (10) movably penetrates the top plate (7). Six movable bins (12) are evenly arranged on the surface of the positioning frame (5), and the six movable bins (12) correspond to the six polished rods (9) respectively. A lifting mechanism (13) is arranged inside the movable bin (12), and the lifting mechanism (13) cooperates with the polished rod (9). Six cleaning mechanisms (25) are evenly arranged on the top of the first side frame (2), and the six cleaning mechanisms (25) correspond to the six polished rods (10) respectively.

2. A PCB circuit board multilateral grinding device according to claim 1, characterized in that: The lifting mechanism (13) comprises a tray (14), the tray (14) being movably sleeved on the surface of the polished rod (9), the top of the tray (14) being provided with a T-shaped slot, the bottom of the polishing rod (10) being provided with a T-shaped slider slidably mounted in the T-shaped slot, side plates (15) being fixedly mounted at both ends of the bottom of the tray (14), a cylinder being fixedly mounted on the inner wall of the side plate (15), a connecting shaft (17) being fixedly mounted on the inner wall of the movable bin (12) via a rotating shaft, a first connecting rod (16) being fixedly mounted on the end of the connecting shaft (17), a sliding groove being provided at the other end of the first connecting rod (16), the sliding groove being slidably clamped on the surface of the cylinder, and a second connecting rod (17) being fixedly mounted in the middle of the connecting shaft (17). The second connecting rod (18) and the first connecting rod (16) are L-shaped, a movable groove (19) is provided at the middle end of the bottom of the second connecting rod (18), a limit groove (20) is provided on the inner wall of the movable groove (19), a limit rod is slidably arranged between the two limit grooves (20), a push-pull rod (21) is provided on the surface of the limit rod, the surface of the push-pull rod (21) passes through the bottom of the movable bin (12), a convex column (22) is installed on the other end of the push-pull rod (21), an auxiliary disk (23) is fixedly provided on the bottom surface of the gear (8), an elliptical groove (24) is provided on the surface of the auxiliary disk (23), and the surface of the convex column (22) is slidably arranged in the elliptical groove (24).

3. A PCB circuit board multilateral grinding device according to claim 2, characterized in that: A flat plate is provided on the surface of the first side frame (2) close to the conveyor belt (1), and a stabilizing roller (3) is provided on the surface of the flat plate. The stabilizing roller (3) is located between the conveyor belt (1) and the grinding mechanism (4).

4. A PCB circuit board multilateral grinding device according to claim 3, characterized in that: The cleaning mechanism (25) comprises a support plate (27), the support plate (27) being fixedly mounted on the inner wall of the first side frame (2), and the support plate (27) being located above the grinding rod (10), an L-shaped rod (26) being arranged above the grinding rod (10), the bending part of the L-shaped rod (26) being connected to the support plate (27) via a rotating shaft, a swing plate (28) being fixedly mounted on one end of the L-shaped rod (26), a brush (29) being arranged on the other end of the swing plate (28), the swing plate (28) being located between the stabilizing roller (3) and the grinding rod (10), and the other end of the L-shaped rod (26) being located directly above the grinding rod (10).

5. A PCB circuit board multilateral grinding device according to claim 4, characterized in that: A stepper motor (11) is mounted on the bottom of the base plate (6) via bolts, and an output end of the stepper motor (11) is connected to one of the gears (8).

6. A PCB circuit board multilateral grinding device according to claim 1, characterized in that: A second side frame (30) is provided at the front end of each first side frame (2); a notch is provided on the surface of the second side frame (30) close to the conveyor belt (1); a cylinder (31) is provided inside the second side frame (30); a transverse plate (32) is installed at the output end of the cylinder (31); an extrusion block (33) is provided on the top of the transverse plate (32); the surface of the extrusion block (33) passes through the notch; a turntable (34) is installed on the top of the notch; and a disc is rotatably provided on the top of the transverse plate (32).

7. A PCB circuit board multilateral grinding device according to claim 1, characterized in that: The outer surface of the first side frame (2) is provided with two through holes, and the two through holes are respectively connected to a suction pipe.

Images