CN117584035B - A grinding device and grinding method for circuit board pretreatment - Google Patents

Abstract

The invention discloses a grinding device and a grinding method for pretreatment of a circuit board, and relates to the field of circuit board treatment. The device comprises a processing table horizontally placed on the ground, wherein a conveying seat is arranged at the top of the processing table, a conveying belt which is oppositely arranged is arranged on the conveying seat, grinding equipment for grinding a circuit board is further arranged at the top of the processing table, and the grinding equipment is located above the conveying seat. According to the circuit board polishing device, the surface of the circuit board is polished through the polishing equipment, and the circuit board can remove scraps generated by polishing in the polishing process, and the scraps falling onto the conveying roller can be cleaned, so that the circuit board conveyed later cannot be influenced.

Description

A grinding device and grinding method for circuit board pretreatment

Technical Field

The invention relates to the field of circuit board processing, and in particular to a grinding device and a grinding method for circuit board preprocessing.

Background Art

Usually, a conductive pattern made of printed circuits, printed components or a combination of the two on an insulating material according to a predetermined design is called a printed circuit, and a conductive pattern on an insulating substrate that provides electrical connections between components is called a printed circuit. In this way, the finished printed circuit or printed circuit board is called a printed circuit board, also known as a printed board or printed circuit board.

The existing patent (publication number: CN114952604A) discloses a grinding device for circuit board pretreatment and a method of using the same, including a base, the upper end of the base is connected to a top plate through a bracket, the left and right ends of the upper end of the base are provided with a conveying platform, the upper end of the base is provided with a magnetic imaging module corresponding to the position of the conveying platform at the right end, the magnetic imaging module is connected to an external display, a bearing platform is provided in the middle position of the upper end of the base, a clamping assembly is provided at the upper end of the base and located on the front and rear sides of the bearing platform, the clamping assembly includes a lifting rod slidably connected to the upper end of the base, a telescopic column is provided at the movable end of the lifting rod, a clamping block is rotatably provided at one end of the telescopic column close to the bearing platform, the side wall of the telescopic column is provided with tooth grooves at equal intervals, a motor is provided inside the lifting rod, a gear corresponding to the position of the tooth groove is provided at the output end of the motor, and a grinding assembly is provided at the lower end of the top plate. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: in order to improve the efficiency of circuit board grinding, the surface of the circuit board is usually ground during the transportation of the circuit board. Grinding during the transportation of the circuit board will cause the waste chips generated by the grinding to fall onto the conveying member, and the waste chips on the conveying member will stick to the surface of the circuit board that is subsequently transported, thereby affecting the subsequent processing of the circuit board.

Summary of the invention

The object of the present invention is to provide a grinding device and a grinding method for circuit board pretreatment to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grinding device for circuit board preprocessing, comprising a processing table horizontally placed on the ground, a conveying seat is provided on the top of the processing table, and conveying belts arranged relatively thereon are provided on the conveying seat, and a grinding device for grinding circuit boards is also provided on the top of the processing table, and the grinding device is located above the conveying seat.

Preferably, the grinding equipment includes a supporting platform fixedly arranged on the top of the processing table, a driving motor is fixedly arranged on the supporting platform, a main shaft transmission of the driving motor is connected to a rotating rod, the rotating rod is rotatably matched with the supporting platform, and a grinding roller is fixedly sleeved on the rotating rod.

Preferably, a driving disk is also provided on the rotating rod, and the side walls of the driving disk are provided with side strips arranged at an inclined slope. A moving part that interferes with the side strips is provided on the bearing platform, and the moving part includes a moving rod slidably arranged on the bearing platform, one end of the moving rod is fixedly connected to a moving frame, a connecting spring is sleeved on the moving rod, and both ends of the connecting spring are respectively connected to the moving frame and the bearing platform. A resisting rod is also provided on the moving frame, and the resisting rod interferes with the side strips on the driving disk.

Preferably, a rifle rod is fixedly provided at one end of the movable rod facing the grinding roller, a rotating shaft is provided on the rifle rod and the rotating shaft cooperates with the spiral line on the rifle rod, the rotating shaft rotates with the supporting platform, a plurality of fan blades are arranged on the outer wall of the rotating shaft around the circumference of the rotating shaft, and a plurality of the fan blades are arranged in the direction of the grinding roller and the conveying seat.

Preferably, the movable frame is further provided with a cleaning member, the cleaning member comprises a supporting frame hingedly arranged on the movable frame, the supporting frame is provided with a rotatably arranged cleaning roller, and a resisting spring is further provided between the supporting frame and the movable frame.

Preferably, a conveying roller is provided on the conveying seat between the two groups of conveying belts, and the conveying roller is located below the grinding roller. Oppositely arranged electric telescopic rods are provided on both sides of the conveying roller on the conveying seat, and a downward pressure block is provided at the telescopic end of the electric telescopic rod.

Preferably, the cleaning roller cooperates with the conveying roller under the pressure of the resisting spring, and the bottom of the conveying seat is also provided with a fixed wedge-shaped inclined block, the surface of the wedge-shaped inclined block is provided with a plurality of protrusions, and the cleaning roller cooperates with the wedge-shaped inclined block.

Preferably, the grinding method of the grinding device for circuit board pretreatment comprises the following steps:

S1: When the circuit board needs to be ground, the circuit board is conveyed to the conveyor roller by the conveyor belt on the conveyor seat, and then the electric telescopic rod drives the pressing block to press down and fix the circuit board on the conveyor roller, so that the circuit board will not be loosened when the grinding equipment is grinding the circuit board, which will affect the grinding effect of the circuit board. The conveyor roller is used to support the circuit board, so that the waste chips generated by the grinding equipment when grinding the circuit board can fall through the gap between the conveyor rollers, so that the residue after grinding will not be on the conveyor roller to affect the subsequent circuit boards;

S2: After the circuit board is restricted on the conveying roller, the driving motor will drive the rotating rod to rotate, and the rotating rod will drive the grinding roller to rotate. The grinding roller will grind the surface of the circuit board on the conveying roller, thereby making the surface of the circuit board smoother and facilitating the subsequent use of the circuit board;

S3: When the driving motor drives the rotating rod to make the grinding roller grind the surface of the circuit board, the rotating rod will drive the driving disk to rotate. When the driving disk rotates, the side strips arranged on the driving disk will contact the resistance rod, so that the resistance rod drives the moving frame to move horizontally. The movement of the moving frame will make the moving rod slide on the bearing platform. The rifle rod arranged on the moving rod will drive the rotating shaft to rotate. The fan blades arranged on the rotating shaft will blow air toward the grinding roller and the circuit board on the conveying roller. When the grinding roller grinds the circuit board, the fan blades can blow away the waste generated in the grinding process of the circuit board, so as to avoid the waste generated in the grinding process from remaining on the surface of the grinding roller and the circuit board to affect the subsequent grinding of the circuit board, and facilitate the subsequent processing of the circuit board.

S4: When the grinding roller grinds the surface of the circuit board, a part of the waste will fall onto the conveying roller. In order to prevent the waste from affecting the subsequent conveying of the circuit board, the support frame will make the cleaning roller contact the surface of the grinding roller under the pressure of the resistance spring, and then the cleaning roller will wipe the surface of the conveying roller while the moving frame moves, thereby cleaning the surface of the conveying roller and preventing the waste generated after grinding from affecting the subsequent circuit boards;

S5: When the cleaning roller moves to clean the surface of the conveyor roller, the cleaning roller will contact the wedge-shaped inclined block during the movement, and the several protrusions provided on the wedge-shaped inclined block will cause the cleaning roller to vibrate, thereby shaking off the waste on the cleaning roller, thereby achieving the self-cleaning effect of the cleaning roller.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, when the circuit board needs to be ground, the circuit board is conveyed to the conveying roller by the conveyor belt on the conveying seat, and then the electric telescopic rod drives the pressing block to press down and fix the circuit board on the conveying roller, so that when the grinding equipment grinds the circuit board, the circuit board will not become loose and affect the grinding effect of the circuit board. The conveying roller is used to support the circuit board, so that the waste chips generated when the grinding equipment grinds the circuit board can fall through the gap between the conveying rollers, so that the residues after grinding will not be on the conveying roller to affect the subsequent circuit boards.

In the present invention, when the driving motor drives the rotating rod to make the grinding roller grind the surface of the circuit board, the rotating rod will drive the driving disk to rotate. When the driving disk rotates, the side strips arranged on the driving disk will contact the resistance rod, so that the resistance rod drives the moving frame to move horizontally. The movement of the moving frame will make the moving rod slide on the supporting platform. The rifle rod arranged on the moving rod will drive the rotating shaft to rotate. The fan blades arranged on the rotating shaft will blow air toward the grinding roller and the circuit board on the conveying roller. Then, when the grinding roller grinds the circuit board, the waste generated in the grinding process of the circuit board can be blown away by the arranged fan blades, so as to avoid the waste generated in the grinding process from remaining on the surface of the grinding roller and the circuit board to affect the subsequent grinding of the circuit board, and facilitate the subsequent processing of the circuit board.

In the present invention, when the grinding roller grinds the surface of the circuit board, a part of the waste will fall onto the conveying roller. In order to prevent the waste from affecting the subsequently conveyed circuit board, the support frame will make the cleaning roller resist toward the surface of the grinding roller under the pressure of the resistance spring, and then the cleaning roller will wipe the surface of the conveying roller while the moving frame moves, thereby cleaning the surface of the conveying roller and preventing the waste generated after grinding from affecting the subsequent circuit boards.

In the present invention, when the cleaning roller moves to clean the surface of the conveying roller, the cleaning roller will contact the wedge-shaped inclined block during the movement, and the several protrusions provided on the wedge-shaped inclined block will cause the cleaning roller to vibrate, thereby shaking off the waste on the cleaning roller, thereby achieving the self-cleaning effect of the cleaning roller.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of a partial three-dimensional structure of the present invention;

FIG3 is a schematic diagram of a partial three-dimensional structure of a grinding device according to the present invention;

FIG4 is a second schematic diagram of a partial three-dimensional structure of the grinding equipment of the present invention;

FIG5 is a third schematic diagram of a partial three-dimensional structure of the grinding device of the present invention;

FIG6 is a second schematic diagram of a partial three-dimensional structure of the present invention;

FIG. 7 is a third schematic diagram of a partial three-dimensional structure of the present invention.

In the figure: 1. processing table; 2. conveying seat; 21. conveyor belt; 3. grinding equipment; 31. bearing platform; 32. driving motor; 33. rotating rod; 34. grinding roller; 4. driving disk; 41. side strip; 5. moving part; 51. moving rod; 52. moving frame; 53. connecting spring; 54. resistance rod; 6. rifle rod; 61. rotating shaft; 62. fan blade; 7. cleaning part; 71. supporting frame; 72. cleaning roller; 73. resistance spring; 8. conveying roller; 81. electric telescopic rod; 82. pressing block; 9. wedge-shaped inclined block.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 7. The present invention provides a technical solution: a grinding device for preprocessing of circuit boards, comprising a processing table 1 placed horizontally on the ground, a conveying seat 2 is provided on the top of the processing table 1, and a conveyor belt 21 is provided on the conveying seat 2. A grinding device 3 for grinding circuit boards is also provided on the top of the processing table 1, and the grinding device 3 is located above the conveying seat 2.

In this embodiment, as shown in Figures 1, 2, 3 and 4, the grinding device 3 includes a carrier 31 fixedly arranged on the top of the processing table 1, a driving motor 32 is fixedly arranged on the carrier 31, and a main shaft of the driving motor 32 is connected to a rotating rod 33, the rotating rod 33 is rotatably matched with the carrier 31, and a grinding roller 34 is fixedly sleeved on the rotating rod 33;

When the circuit board is restricted on the conveying roller 8, the driving motor 32 will drive the rotating rod 33 to rotate, and the rotation of the rotating rod 33 will drive the grinding roller 34 to rotate. The grinding roller 34 will grind the surface of the circuit board on the conveying roller 8, thereby making the surface of the circuit board smooth and convenient for the subsequent use of the circuit board.

In this embodiment, as shown in Figures 1, 2, 3, 4 and 5, a driving disk 4 is further provided on the rotating rod 33, and a side strip 41 is provided on the side wall of the driving disk 4 with an inclined slope. A moving member 5 that contacts and cooperates with the side strip 41 is provided on the bearing platform 31, and the moving member 5 includes a moving rod 51 slidably arranged on the bearing platform 31, and one end of the moving rod 51 is fixedly connected to a moving frame 52, and a connecting spring 53 is sleeved on the moving rod 51, and the two ends of the connecting spring 53 are respectively connected to the moving frame 52 and the bearing platform 31, and a resisting rod 54 is further provided on the moving frame 52, and the resisting rod 54 contacts and cooperates with the side strip 41 on the driving disk 4;

A rifle rod 6 is fixedly provided at one end of the moving rod 51 facing the grinding roller 34, a rotating shaft 61 is provided on the rifle rod 6 and the rotating shaft 61 cooperates with the spiral line on the rifle rod 6, the rotating shaft 61 rotates with the supporting platform 31, and a plurality of fan blades 62 are provided on the outer wall of the rotating shaft 61 around the circumference of the rotating shaft 61, and the plurality of fan blades 62 are arranged in the direction of the grinding roller 34 and the conveying seat 2;

When the driving motor 32 drives the rotating rod 33 to make the grinding roller 34 grind the surface of the circuit board, the rotating rod 33 will drive the driving disk 4 to rotate, and the side strips 41 arranged on the driving disk 4 will contact the resistance rod 54, so that the resistance rod 54 drives the moving frame 52 to move horizontally, and the movement of the moving frame 52 will make the moving rod 51 slide on the supporting platform 31, and the rifle rod 6 arranged on the moving rod 51 will drive the rotating shaft 61 to rotate, and the fan blades 62 arranged on the rotating shaft 61 will blow air toward the grinding roller 34 and the circuit board on the conveying roller 8, and then when the grinding roller 34 grinds the circuit board, the fan blades 62 can blow away the waste generated in the grinding process toward the circuit board, so as to avoid the waste generated in the grinding process from remaining on the surface of the grinding roller 34 and the circuit board, affecting the subsequent grinding of the circuit board and facilitating the subsequent processing of the circuit board.

In this embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 6 , the mobile frame 52 is further provided with a cleaning member 7, and the cleaning member 7 includes a support frame 71 hingedly arranged on the mobile frame 52, and a cleaning roller 72 is rotatably arranged on the support frame 71, and a resisting spring 73 is further provided between the support frame 71 and the mobile frame 52;

When the grinding roller 34 grinds the surface of the circuit board, a part of the waste will fall onto the conveying roller 8. In order to prevent the waste from affecting the subsequently conveyed circuit boards, the support frame 71 will cause the cleaning roller 72 to resist the surface of the grinding roller 34 under the pressure of the resistance spring 73, and then the cleaning roller 72 will wipe the surface of the conveying roller 8 while the moving frame 52 moves, thereby cleaning the surface of the conveying roller 8 and preventing the waste generated after grinding from affecting the subsequent circuit boards.

In this embodiment, as shown in FIGS. 1 , 2 and 7 , a conveying roller 8 is provided between the two sets of conveying belts 21 on the conveying seat 2, and the conveying roller 8 is located below the grinding roller 34. Electric telescopic rods 81 are provided on both sides of the conveying roller 8 on the conveying seat 2, and a lower pressing block 82 is provided at the telescopic end of the electric telescopic rod 81.

When the circuit board needs to be ground, the circuit board is conveyed to the conveying roller 8 by the conveyor belt 21 on the conveying seat 2, and then the electric telescopic rod 81 drives the pressing block 82 to press down and fix the circuit board on the conveying roller 8, so that the circuit board will not loosen when the grinding equipment 3 grinds the circuit board, which will affect the grinding effect of the circuit board. The conveying roller 8 is used to support the circuit board, so that the waste chips generated when the grinding equipment 3 grinds the circuit board can fall through the gap between the conveying rollers 8, so that the residue after grinding will not be on the conveying roller 8 to affect the subsequent conveying of the circuit board.

In this embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 7 , the cleaning roller 72 is in contact with the conveying roller 8 under the pressure of the contact spring 73 , and the bottom of the conveying seat 2 is also provided with a fixed wedge-shaped inclined block 9 , and the surface of the wedge-shaped inclined block 9 is provided with a plurality of protrusions, and the cleaning roller 72 is in contact with the wedge-shaped inclined block 9 ;

When the cleaning roller 72 moves to clean the surface of the conveying roller 8, the cleaning roller 72 will contact the wedge-shaped bevel block 9 during the movement. The several protrusions provided on the wedge-shaped bevel block 9 will cause the cleaning roller 72 to vibrate, thereby shaking off the waste on the cleaning roller 72, thereby achieving the self-cleaning effect of the cleaning roller 72.

The use method and advantages of the present invention: The grinding method for circuit board pretreatment has the following working process:

As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, and Figure 7:

S1: When the circuit board needs to be ground, the circuit board is conveyed to the conveying roller 8 by the conveying belt 21 on the conveying seat 2, and then the electric telescopic rod 81 drives the pressing block 82 to press down and fix the circuit board on the conveying roller 8, so that the circuit board will not be loosened when the grinding device 3 grinds the circuit board, which will affect the grinding effect of the circuit board. The conveying roller 8 is used to support the circuit board, so that the waste chips generated when the grinding device 3 grinds the circuit board can fall through the gap between the conveying rollers 8, so that the residue after grinding will not be on the conveying roller 8 to affect the subsequent circuit boards;

S2: After the circuit board is restricted on the conveying roller 8, the driving motor 32 drives the rotating rod 33 to rotate, and the rotating rod 33 rotates to drive the grinding roller 34 to rotate. The grinding roller 34 grinds the surface of the circuit board on the conveying roller 8, thereby making the surface of the circuit board smoother and facilitating the subsequent use of the circuit board;

S3: When the driving motor 32 drives the rotating rod 33 to make the grinding roller 34 grind the surface of the circuit board, the rotating rod 33 will drive the driving disk 4 to rotate. The driving disk 4 rotates, and the side strips 41 arranged on the driving disk 4 will contact the abutment rod 54, so that the abutment rod 54 drives the moving frame 52 to move horizontally. The movement of the moving frame 52 will make the moving rod 51 slide on the supporting platform 31, and the rifle rod 6 arranged on the moving rod 51 will drive the rotating shaft 61 to rotate. The fan blades 62 arranged on the rotating shaft 61 will blow air toward the grinding roller 34 and the circuit board on the conveying roller 8. Then, when the grinding roller 34 grinds the circuit board, the fan blades 62 can blow away the waste generated in the grinding process of the circuit board, so as to avoid the waste generated in the grinding process from remaining on the surface of the grinding roller 34 and the circuit board to affect the subsequent grinding of the circuit board, and facilitate the subsequent processing of the circuit board;

S4: When the grinding roller 34 grinds the surface of the circuit board, a part of the waste will fall onto the conveying roller 8. In order to prevent the waste from affecting the subsequent conveying of the circuit board, the support frame 71 will make the cleaning roller 72 contact the surface of the grinding roller 34 under the pressure of the resistance spring 73, and then the cleaning roller 72 will wipe the surface of the conveying roller 8 while the moving frame 52 moves, thereby cleaning the surface of the conveying roller 8 and preventing the waste generated after grinding from affecting the subsequent circuit boards;

S5: When the cleaning roller 72 moves to clean the surface of the conveying roller 8, the cleaning roller 72 will contact the wedge-shaped bevel block 9 during the movement. The several protrusions provided on the wedge-shaped bevel block 9 will cause the cleaning roller 72 to vibrate, and then the waste on the cleaning roller 72 will be shaken away, thereby achieving the self-cleaning effect of the cleaning roller 72.

The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (5)

1. A grinder for circuit board preliminary treatment, its characterized in that: the device comprises a processing table (1) horizontally placed on the ground, wherein a conveying seat (2) is arranged at the top of the processing table (1), a conveying belt (21) which is oppositely arranged is arranged on the conveying seat (2), grinding equipment (3) for grinding a circuit board is further arranged at the top of the processing table (1), and the grinding equipment (3) is positioned above the conveying seat (2);

The grinding equipment (3) comprises a bearing table (31) fixedly arranged at the top of the processing table (1), a driving motor (32) is fixedly arranged on the bearing table (31), a rotating rod (33) is connected with a main shaft of the driving motor (32) in a transmission manner, the rotating rod (33) is in rotating fit with the bearing table (31), and a grinding roller (34) is fixedly sleeved on the rotating rod (33);

The movable table is characterized in that a driving disc (4) is further arranged on the rotating rod (33), side strips (41) which are arranged in an inclined slope are arranged on the side walls of the driving disc (4), a movable piece (5) which is in interference fit with the side strips (41) is arranged on the bearing table (31), the movable piece (5) comprises a movable rod (51) which is arranged on the bearing table (31) in a sliding mode, one end of the movable rod (51) is fixedly connected with a movable frame (52), a connecting spring (53) is sleeved on the movable rod (51), two ends of the connecting spring (53) are respectively connected with the movable frame (52) and the bearing table (31), an abutting rod (54) is further arranged on the movable frame (52), and the abutting rod (54) is in interference fit with the side strips (41) on the driving disc (4);

The utility model discloses a movable rod, including grinding roller (34), movable rod (51), rotary shaft (61) and screw line on the movable rod (51), movable rod (51) is equipped with on the movable rod (6) to come to be equipped with on the lever (6) and pivot (61) and come to be equipped with on the lever (6) helix, pivot (61) and plummer (31) normal running fit, set up a plurality of flabellums (62) around the circumference of pivot (61) on the outer wall of pivot (61), a plurality of flabellums (62) are towards the direction setting of grinding roller (34) and conveying seat (2).

2. The grinding device for pretreatment of circuit boards according to claim 1, wherein: still be equipped with cleaning element (7) on removing frame (52), cleaning element (7) are including articulated support frame (71) that set up on removing frame (52), be equipped with cleaning roller (72) that rotate the setting on support frame (71), still be equipped with between support frame (71) and the removal frame (52) conflict spring (73).

3. A grinding device for pretreatment of circuit boards according to claim 2, wherein: the conveying device is characterized in that conveying rollers (8) are arranged between two groups of conveying belts (21) on the conveying seat (2), the conveying rollers (8) are arranged below the grinding rollers (34), electric telescopic rods (81) which are oppositely arranged are arranged on the two sides of the conveying rollers (8) on the conveying seat (2), and pressing blocks (82) are arranged at the telescopic ends of the electric telescopic rods (81).

4. A grinding device for pretreatment of circuit boards according to claim 3, wherein: the cleaning roller (72) is in interference fit with the conveying roller (8) under the pressure of an interference spring (73), a wedge-shaped inclined block (9) which is fixedly arranged is further arranged at the bottom of the conveying seat (2), a plurality of protrusions are arranged on the surface of the wedge-shaped inclined block (9), and the cleaning roller (72) is in interference fit with the wedge-shaped inclined block (9).

5. The polishing method of a polishing apparatus for pretreatment of circuit board according to claim 4, wherein: the grinding method comprises the following steps:

S1: when the circuit board is required to be ground, the circuit board is conveyed to the conveying rollers (8) through the conveying belt (21) on the conveying seat (2), then the pressing block (82) is driven by the electric telescopic rod (81) to press down and fix the circuit board on the conveying rollers (8), so that the grinding effect of the circuit board is not influenced by loosening when the grinding equipment (3) grinds the circuit board, the conveying rollers (8) are used for supporting the circuit board, and scraps generated when the grinding equipment (3) grinds the circuit board can fall through gaps between the conveying rollers (8), so that residues after grinding are located on the conveying rollers (8) and influence on the subsequent circuit board is avoided;

S2: when the circuit board is limited on the conveying roller (8), the driving motor (32) drives the rotating rod (33) to rotate, the rotating rod (33) rotates to drive the grinding roller (34) to rotate, and the grinding roller (34) grinds the surface of the circuit board on the conveying roller (8), so that the surface of the circuit board is smoother and convenient for the subsequent use of the circuit board;

S3: when a driving motor (32) drives a rotating rod (33) to grind the surface of a circuit board, the rotating rod (33) drives a driving disc (4) to rotate, a side bar (41) arranged on the driving disc (4) is in contact with a collision rod (54) in a rotating way, the collision rod (54) drives a movable frame (52) to transversely move, the movable frame (52) moves to enable the movable rod (51) to slide on a bearing table (31), a transfer rod (6) arranged on the movable rod (51) drives a rotating shaft (61) to rotate, fan blades (62) arranged on the rotating shaft (61) face the circuit board on the grinding roller (34) and a conveying roller (8), and when the grinding roller (34) grinds the circuit board, waste generated in the grinding process of the circuit board can be blown off through the fan blades (62), and the waste generated in the grinding process of the circuit board is prevented from being remained on the surface of the grinding roller (34) and the circuit board to affect the subsequent circuit board and the subsequent circuit board is convenient to process the circuit board;

S4: when the grinding roller (34) grinds the surface of the circuit board, a part of waste scraps can fall onto the conveying roller (8), in order to avoid the influence of the waste scraps on the circuit board which is conveyed subsequently, the supporting frame (71) can enable the cleaning roller (72) to collide with the surface of the conveying roller (8) under the pressure of the collision spring (73), and then the cleaning roller (72) can wipe the surface of the conveying roller (8) while the moving frame (52) moves, so that the surface of the conveying roller (8) is cleaned, and the influence of the scraps generated after grinding on the subsequent circuit board is avoided;

S5: when the cleaning roller (72) moves and cleans the surface of the conveying roller (8), the cleaning roller (72) is contacted with the wedge-shaped inclined block (9) in the moving process, and a plurality of bulges arranged on the wedge-shaped inclined block (9) can shake the cleaning roller (72), so that scraps on the cleaning roller (72) are removed in a shaking mode, and the self-cleaning effect of the cleaning roller (72) is achieved.