CN112476201A

CN112476201A - Integrated circuit board welding pin cutting machine and using method thereof

Info

Publication number: CN112476201A
Application number: CN202011332797.7A
Authority: CN
Inventors: 黎鹏
Original assignee: Wenzhou Bingxi Environmental Protection Technology Co ltd
Current assignee: NANJING NORTH WEIHAW OPTICS ELECTRONICS CO.,LTD.
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-12
Anticipated expiration: 2040-11-25
Also published as: CN112476201B

Abstract

The invention discloses an integrated circuit board welding pin cutting machine, which comprises a shell, wherein a mounting cavity is arranged in the shell, a motor is arranged on the lower end wall of the mounting cavity, a grinding wheel is detachably arranged at the output shaft end of the motor, the mounting cavity is arranged in the shell, an adjusting device is arranged in the middle of the mounting cavity, a sliding device is arranged on two sides of the mounting cavity, and auxiliary devices are respectively arranged on two sides of the adjusting device. Wide application range and simple operation.

Description

Integrated circuit board welding pin cutting machine and using method thereof

Technical Field

The invention belongs to the electronic field of the invention, and particularly relates to a welding pin cutting machine for an integrated circuit board and a using method thereof.

Background

The integrated circuit board is an important electronic element in electronic equipment, a substrate of the integrated circuit board is made of a material which is insulating, heat-insulating and not easy to bend, a narrow circuit material which can be seen on the surface of the substrate is a copper foil called a lead, and various electronic elements are welded on the substrate to realize connection through the circuit; after each electronic component is welded on the substrate, a longer welding foot can appear at the welding position, so that the working performance of the circuit board is influenced, and the welding foot is easy to directly fall off when the welding foot of the integrated circuit board is trimmed in the prior art, so that the integrated circuit board is broken.

Disclosure of Invention

The invention provides an integrated circuit board welding pin cutting machine and a using method thereof, aiming at overcoming the defects of the prior art, and the cutting degree can be selected according to the actual condition of the integrated circuit board welding pin, so that the integrated circuit board is prevented from being damaged during cutting.

The technical scheme of the invention is as follows: a welding pin cutting machine for an integrated circuit board comprises a shell, wherein a placement cavity is arranged in the shell, a motor is arranged on the lower end wall of the placement cavity, a grinding wheel is detachably arranged at the output shaft end of the motor, the placement cavity is arranged in the shell, an adjusting device is arranged in the middle of the placement cavity, sliding devices are arranged on two sides of the placement cavity, auxiliary devices are respectively arranged on two sides of the adjusting device, the adjusting device is used for adapting to integrated circuit boards with different widths, the sliding devices are used for adjusting the height of the integrated circuit boards, the auxiliary devices are used for cutting and polishing the integrated circuit boards from the upper end face of the grinding wheel, each sliding device comprises an auxiliary groove formed in the left end wall of the placement cavity, an auxiliary sliding block is arranged in each auxiliary groove in a sliding mode, the lower end face of the auxiliary sliding block is connected with the lower end wall of, the sliding cavity is internally provided with a sliding block in a sliding mode, the sliding block and the opposite end faces of the auxiliary sliding block are fixedly connected through a fixed shaft, the lower end face of the sliding block is connected with the lower end face of the sliding cavity through a second spring, and the right end face of the sliding block is fixedly provided with a pressing plate.

The sliding device further comprises two groups of rolling assemblies which are arranged on the end face of the sliding block in a bilateral symmetry mode, each rolling assembly comprises rolling parts which are arranged on one end face of the sliding block in an up-down symmetry mode, each rolling part comprises a first rolling cavity formed in the end face of the sliding block, and first rolling balls are arranged in the first rolling cavities in a rolling mode.

Adjusting device is including fixed setting up the round platform on fixed axle, be equipped with the bearing chamber in the round platform, bearing chamber inner wall pressure equipment is equipped with ball bearing, ball bearing inner circle pressure equipment is equipped with the axis of rotation, the fixed first bevel gear that is equipped with of terminal surface under the axis of rotation, the axis of rotation up end is equipped with square chamber, it is equipped with square post to slide in the square chamber, terminal surface under the square post with square chamber lower extreme wall passes through third spring coupling, the fixed rolling disc that is equipped with of square post up end, the fixed hand pole that is equipped with of rolling disc up end, terminal surface bilateral symmetry is equipped with two locating pins under the rolling disc, a plurality of spacing holes have evenly been seted up to round platform up end circumference, spacing downthehole wall with the locating pin.

The adjusting device further comprises two groups of moving assemblies which are bilaterally symmetrically arranged on the fixed shaft, each moving assembly comprises a sliding plate which is sleeved on the fixed shaft, a through hole is formed in the sliding plate, the through hole is in sliding connection with the fixed shaft, a worm tooth cavity is formed in the sliding plate, worm teeth are arranged in the worm tooth cavity, a worm is arranged in the worm tooth cavity in a rotating mode, the worm is meshed with the worm teeth, two opposite end faces of the two worms are fixedly provided with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the two worms are bilaterally symmetric with respect to the second bevel gear, the right end face of the worm on the right side is rotationally connected with the left end face of the sliding block, and the left end face of the.

The auxiliary device is including the fixed plate that sets up terminal surface under the worm, a fixed plate terminal surface has been seted up circuit board and has been settled the chamber, circuit board is settled intracavity longitudinal symmetry and is equipped with two sets of clamping components, clamping component is including seting up the opening chamber of settling chamber end wall at the circuit board, it presss from both sides tight piece to slide in the opening chamber, press from both sides tight piece a terminal surface with opening intracavity wall passes through fourth spring coupling, press from both sides another terminal surface of tight piece and has seted up the second and roll the chamber, the second rolls the intracavity and rolls and is equipped with the second ball, two distance between the second ball is less than the thickness of integrated circuit board.

The circuit board is settled the intracavity and is slided and be equipped with first push pedal, the circuit board is settled the chamber and is still slided and be equipped with the second push pedal, the second push pedal with first push pedal terminal surface in opposite directions passes through fifth spring coupling, be equipped with the via hole in the second push pedal, it is equipped with the pull rod to slide in the via hole, the pull rod with terminal surface fixed connection before the first push pedal.

In addition, the invention also provides a using method of the integrated circuit board welding pin cutting machine, which comprises the following steps;

s1, selecting a grinding wheel with a proper size to be mounted at an output shaft end of a motor according to the size of an integrated circuit board to be cut;

s2, rotating the hand-operated lever to adjust the distance between the two fixing plates to be suitable for the width of the integrated circuit board, inserting the welding pin welding surface of the integrated circuit board downwards from the opening at the rear end of the circuit board mounting cavity, and abutting against the front end surface of the second push plate, wherein the rear end surface of the integrated circuit board is positioned on the front side of the grinding wheel;

s3, starting a motor to enable the grinding wheel to rotate, and manually pressing the pressing plate downwards to enable welding pins of the integrated circuit board to be cut to be lower than the upper end face of the grinding wheel;

s4, the pressing plate is pressed to prevent hands from being loosened, the pull rod is pulled backwards to enable welding feet of the integrated circuit board to be cut by the grinding wheel, and the pressing plate is adjusted back and forth by an operator according to the condition of the welding feet of the lower end face of the integrated circuit board to enable the welding feet of the lower end face of the integrated circuit board to be cut and polished to be smooth.

Has the advantages that:

the auxiliary device is arranged, so that the extrusion force between the integrated circuit board and the grinding wheel can be selected according to actual conditions when the integrated circuit board is used for cutting the welding pins, the situation that the welding pins directly fall off and the integrated circuit board is broken is avoided when the welding pins are cut, meanwhile, the grinding can be carried out at the dense positions of the welding pins, the lower surface of the integrated circuit board is as flat as possible, and the adjusting device is arranged, so that the integrated circuit board cutting device can be used for integrated circuit boards with various sizes, and is wide in application range and simple to operate.

Drawings

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is an enlarged schematic view at B in FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 5 is an enlarged schematic view of FIG. 1 at D;

fig. 6 is a sectional view at E-E in fig. 5.

In the figure, a housing 11, a mounting cavity 12, a motor 13, a grinding wheel 14, an auxiliary groove 15, a first spring 16, an auxiliary slider 17, a fixed shaft 18, a worm 19, a sliding plate 20, a through hole 21, a worm gear cavity 22, a worm gear 23, a rotating shaft 24, a first bevel gear 25, a second bevel gear 26, a sliding cavity 27, a second spring 28, a slider 29, a pressing plate 30, a first rolling cavity 31, a first ball 32, a circular table 33, a bearing cavity 34, a ball bearing 35, a positioning pin 36, a rotating disc 37, a hand lever 38, a limiting hole 39, a square cavity 40, a square column 41, a third spring 42, a fixing plate 43, a circuit board mounting cavity 45, an open cavity 46, a fourth spring 47, a clamping block 48, a second ball 49, a pull rod 50, a second push plate 51, a through hole 52, a first push plate 53, a second rolling cavity 55 and a fifth spring 56 are arranged.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. For convenience of description, the specific form of the spring attachment is not described below, and may be provided in the conventional manner of a mechanical design manual, i.e., by providing a groove or protrusion for positioning the spring.

As shown in fig. 1-6, an ic board welding foot cutting machine comprises a housing 11, a housing 11 is provided with a placement cavity 12, a motor 13 is provided on the lower end wall of the placement cavity 12, an output shaft end of the motor 13 is detachably provided with a grinding wheel 14, the housing 11 is provided with the placement cavity 12, an adjusting device is provided in the middle of the placement cavity 12, two sides of the placement cavity 12 are provided with a sliding device, two sides of the adjusting device are respectively provided with an auxiliary device, the adjusting device is used for adapting to ic boards with different widths, the sliding device is used for adjusting the height of the ic boards, the auxiliary device is used for grinding the ic boards from the upper end face side of the grinding wheel 14 while passing through, the sliding device comprises an auxiliary groove 15 arranged on the left end wall of the placement cavity 12, an auxiliary slider 17 is slidably provided in the auxiliary groove 15, the lower end face of the auxiliary slider 17 is connected with the, a sliding block 29 is arranged in the sliding cavity 27 in a sliding mode, the opposite end faces of the sliding block 29 and the auxiliary sliding block 17 are fixedly connected through a fixed shaft 18, the lower end face of the sliding block 29 is connected with the lower end face of the sliding cavity 27 through a second spring 28, and a pressing plate 30 is fixedly arranged on the right end face of the sliding block 29.

The sliding device further comprises two groups of rolling assemblies which are arranged on the end face of the sliding block 29 in a bilateral symmetry mode, each rolling assembly comprises a rolling part which is arranged on one end face of the sliding block 29 in an up-down symmetry mode, each rolling part comprises a first rolling cavity 31 arranged on the end face of the sliding block 29, and a first ball 32 is arranged in each first rolling cavity 31 in a rolling mode.

After the integrated circuit board is installed on the auxiliary device, the motor 13 is started to drive the grinding wheel 14 to rotate, an operator can manually press the pressing plate 30 downwards, the pressing plate 30 drives the sliding block 29 to move downwards, the second spring 28 is compressed, the sliding block 29 drives the fixing shaft 18 to move downwards, the fixing shaft 18 drives the auxiliary sliding block 17 to move downwards, the first spring 16 is compressed, the fixing shaft 18 moves downwards to drive the auxiliary device to move downwards, the integrated circuit board on the auxiliary device moves downwards, the relative height between the integrated circuit board and the grinding wheel 14 is adjusted through the mode, and the operator can independently select the degree of cutting the welding feet of the integrated circuit board.

Adjusting device is including the fixed round platform 33 that sets up on fixed axle 18, be equipped with bearing chamber 34 in the round platform 33, bearing chamber 34 inner wall pressure equipment is equipped with ball bearing 35, ball bearing 35 inner circle pressure equipment is equipped with axis of rotation 24, the terminal surface is fixed and is equipped with first bevel gear 25 under the axis of rotation 24, axis of rotation 24 up end is equipped with square chamber 40, it is equipped with square post 41 to slide in the square chamber 40, terminal surface passes through third spring 42 with square chamber 40 lower terminal wall under the square post 41 and is connected, the fixed rolling disc 37 that is equipped with of square post 41 up end, the fixed hand rod 38 that is equipped with of rolling disc 37 up end, terminal surface bilateral symmetry is equipped with two locating pins 36 under the rolling disc 37, a plurality of spacing holes 39 have evenly been seted up to round platform 33 up.

The adjusting device further comprises two groups of moving components which are arranged on the fixed shaft 18 in a bilateral symmetry mode, the moving components comprise a sliding plate 20 sleeved on the fixed shaft 18, a through hole 21 is formed in the sliding plate 20, the through hole 21 is connected with the fixed shaft 18 in a sliding mode, a worm tooth cavity 22 is formed in the sliding plate 20, worm teeth 23 are arranged in the worm tooth cavity 22, a worm 19 is arranged in the worm tooth cavity 22 in a rotating mode, the worm 19 is meshed with the worm teeth 23, a second bevel gear 26 is fixedly arranged on the opposite end faces of the two worm teeth 19, the second bevel gear 26 is meshed with a first bevel gear 25, the two worm teeth 19 are symmetrical in the bilateral direction of the second bevel gear 26, the right end face of the right worm 19 is connected with the left.

When the integrated circuit board needs to be installed on the auxiliary device, an operator manually pulls the hand lever 38 upwards, the hand lever 38 drives the rotating disc 37 to move upwards, the rotating disc 37 drives the positioning pin 36 to move upwards until the positioning pin 36 is separated from the limiting hole 39, the third spring 42 is stretched, at this time, the operator manually rotates the hand lever 38, the hand lever 38 drives the rotating disc 37 to rotate, the rotating disc 37 drives the rotating shaft 24 to rotate through the square column 41, the rotating shaft 24 drives the first bevel gear 25 to rotate, the first bevel gear 25 drives the second bevel gear 26 to rotate, the second bevel gear 26 drives the two worms 19 to rotate, the two worms 19 rotate to enable the two sliding plates 20 to be far away from each other, or the two sliding plates are close to the size of the integrated circuit board, the hand lever 38 is released, the third spring 42 resets, the positioning pin 36 is inserted into the limiting hole 39, and the distance between the two sliding plates, so as to fix the integrated circuit board.

The auxiliary device comprises a fixing plate 43 fixedly arranged on the lower end face of the worm 19, a circuit board arranging cavity 45 is formed in one end face of the fixing plate 43, two groups of clamping assemblies are symmetrically arranged in the circuit board arranging cavity 45 in an up-down mode, each clamping assembly comprises an opening cavity 46 formed in one end wall of the circuit board arranging cavity 45, a clamping block 48 is arranged in the opening cavity 46 in a sliding mode, one end face of the clamping block 48 is connected with the inner wall of the opening cavity 46 through a fourth spring 47, a second rolling cavity 55 is formed in the other end face of the clamping block 48, a second ball 49 is arranged in the second rolling cavity 55 in a rolling mode, and the distance between the two second balls 49 is smaller.

The first push plate 53 is arranged in the circuit board arranging cavity 45 in a sliding mode, the second push plate 51 is further arranged in the circuit board arranging cavity 45 in a sliding mode, the opposite end faces of the second push plate 51 and the first push plate 53 are connected through a fifth spring 56, a through hole 52 is formed in the second push plate 51, a pull rod 50 is arranged in the through hole 52 in a sliding mode, and the pull rod 50 is fixedly connected with the front end face of the first push plate 53.

When the edge of the integrated circuit board is inserted from the opening at the rear end of the circuit board placing cavity 45 to abut against the front end face of the second push plate 51, because the thickness of the integrated circuit board is greater than the distance between the two second balls 49, when the integrated circuit board is inserted, the two clamping blocks 48 are away from each other, the two fourth springs 47 are compressed, so that the two second balls 49 clamp the edge of the integrated circuit board, when the grinding wheel 14 cuts the welding feet of the integrated circuit board, an operator manually pulls the two box pull rods 50 to move backwards, the pull rods 50 drive the first push plate 53 to move forwards, the fifth springs 56 are compressed, the first push plate 53 extrudes the second push plate 51 to move forwards through the fifth springs 56, and the second push plate 51 drives the integrated circuit board to move forwards, so that the integrated circuit board passes through the upper end face of the grinding wheel 14.

The working principle is as follows:

when the integrated circuit board needs to be installed on the auxiliary device, an operator manually pulls the hand-operated lever upwards, the hand-operated lever drives the rotating disc to move upwards, the rotating disc drives the positioning pin to move upwards until the positioning pin is separated from the limiting hole, the third spring is stretched, the operator manually rotates the hand-operated lever at the moment, the hand-operated lever drives the rotating disc to rotate, the rotating disc drives the rotating shaft to rotate through the square column, the rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the two worms to rotate, and the two worms rotate to enable the two sliding plates to mutually move, or be close to each other when being fit for the integrated circuit board size, loosen the hand rocker, the third spring resets, and the locating pin inserts spacing downthehole, and the distance between two sliding plates can not change when integrated circuit board cutting welding foot to it is fixed with integrated circuit board.

When the edge of the integrated circuit board is inserted into the position where the rear end opening of the circuit board accommodating cavity is abutted to the front end face of the second push plate, the thickness of the integrated circuit board is larger than the distance between the two second balls, when the integrated circuit board is inserted, the two clamping blocks are in the mutual principle, the two fourth springs are compressed, the edge of the integrated circuit board is clamped by the two second balls, when a welding pin of the integrated circuit board is cut by a grinding wheel, an operator manually pulls the two pull rods to move backwards, the pull rods drive the first push plate to move forwards, the fifth springs are compressed, the first push plate extrudes the second push plate to move forwards through the fifth springs, the second push plate drives the integrated circuit board to move forwards, and the integrated circuit board passes through the upper end face of.

After installing integrated circuit board on auxiliary device, the motor starts, drive the emery wheel and rotate, the operator can manually press down the pressure board, press the pressure board and drive the slider downstream, the second spring is compressed, the slider drives the fixed axle downstream, the fixed axle drives supplementary slider downstream, first spring is compressed, the fixed axle downstream drives auxiliary device downstream, make the integrated circuit board downstream on the auxiliary device, adjust the relative height of integrated circuit board and emery wheel through this kind of mode, the degree that the welding foot of integrated circuit board was cut is independently selected to the operator.

Other parts in the present invention are not described in detail for the prior art.

Claims

1. The utility model provides an integrated circuit board welding foot cutting machine, includes casing (11), be equipped with in casing (11) and settle chamber (12), it is equipped with motor (13) to settle chamber (12) lower terminal wall, motor (13) output shaft end can be dismantled and be equipped with emery wheel (14), its characterized in that: a placing cavity (12) is arranged in the shell (11), an adjusting device is arranged in the middle of the placing cavity (12), sliding devices are arranged on two sides of the placing cavity (12), auxiliary devices are respectively arranged on two sides of the adjusting device, the adjusting device is used for being suitable for integrated circuit boards with different widths, the sliding devices are used for adjusting the height of the integrated circuit boards, the auxiliary devices are used for polishing the integrated circuit boards from the upper end face side of the grinding wheel (14), the sliding devices comprise auxiliary grooves (15) formed in the left end wall of the placing cavity (12), auxiliary sliding blocks (17) are arranged in the auxiliary grooves (15) in a sliding mode, the lower end faces of the auxiliary sliding blocks (17) are connected with the lower end wall of the auxiliary grooves (15) through first springs (16), a sliding cavity (27) is formed in the right end wall of the placing cavity (12), and sliding blocks (29) are arranged in the sliding cavity (27) in a, the opposite end faces of the sliding block (29) and the auxiliary sliding block (17) are fixedly connected through a fixed shaft (18), the lower end face of the sliding block (29) is connected with the lower end face of the sliding cavity (27) through a second spring (28), and a pressing plate (30) is fixedly arranged on the right end face of the sliding block (29).

2. The ic board solder pin cutter according to claim 1, wherein: the sliding device further comprises two groups of rolling assemblies which are arranged on the end face of the sliding block (29) in a bilateral symmetry mode, each rolling assembly comprises a rolling part which is arranged on one end face of the sliding block (29) in an up-down symmetry mode, each rolling part comprises a first rolling cavity (31) which is formed in the end face of the sliding block (29), and a first ball (32) is arranged in each first rolling cavity (31) in a rolling mode.

3. An ic board solder pin cutter as claimed in claim 1, wherein; the adjusting device comprises a round table (33) fixedly arranged on a fixed shaft (18), a bearing cavity (34) is arranged in the round table (33), a ball bearing (35) is arranged on the inner wall of the bearing cavity (34) in a press fit mode, a rotating shaft (24) is arranged on the inner ring of the ball bearing (35) in a press fit mode, a first bevel gear (25) is fixedly arranged on the lower end face of the rotating shaft (24), a square cavity (40) is arranged on the upper end face of the rotating shaft (24), a square column (41) is arranged in the square cavity (40) in a sliding mode, the lower end face of the square column (41) is connected with the lower end wall of the square cavity (40) through a third spring (42), a rotating disc (37) is fixedly arranged on the upper end face of the square column (41), a hand lever (38) is fixedly arranged on the upper end face of the rotating disc (37), two positioning pins (36) are arranged on the lower end face of, the inner wall of the limiting hole (39) is abutted to the positioning pin (36).

4. The ic board solder pin cutter according to claim 3, wherein: the adjusting device further comprises two groups of moving components which are arranged on the fixed shaft (18) in a bilateral symmetry manner, the moving components comprise sliding plates (20) sleeved on the fixed shaft (18), through holes (21) are formed in the sliding plates (20), the through holes (21) are in sliding connection with the fixed shaft (18), worm tooth cavities (22) are formed in the sliding plates (20), worm teeth (23) are arranged in the worm tooth cavities (22), worms (19) are rotationally arranged in the worm tooth cavities (22), the worms (19) are meshed with the worm teeth (23), two opposite end faces of the two worms (19) are fixedly provided with second bevel gears (26), the second bevel gears (26) are meshed with the first bevel gears (25), the two worms (19) are in a bilateral symmetry manner relative to the second bevel gears (26), and the right end face of the right worm (19) on the right side is rotationally connected with the left end face of the sliding block (29), the left end surface of the left worm (19) is rotationally connected with the right end surface of the auxiliary sliding block (17).

5. The ic board solder pin cutter according to claim 1, wherein: auxiliary device is including fixed plate (43) that sets up terminal surface under worm (19), circuit board arrangement chamber (45) has been seted up to fixed plate (43) a terminal surface, the circuit board is settled interior longitudinal symmetry of chamber (45) and is equipped with two sets of clamping components, clamping components is including seting up opening chamber (46) of circuit board arrangement chamber (45) an end wall, it is equipped with clamp piece (48) to slide in opening chamber (46), press from both sides a clamp piece (48) a terminal surface with opening chamber (46) inner wall is connected through fourth spring (47), press from both sides another terminal surface of clamp piece (48) and seted up second roll chamber (55), roll in second roll chamber (55) and be equipped with second ball (49), distance between second ball (49) is less than the thickness of integrated circuit board.

6. The ic board solder pin cutter according to claim 5, wherein: the circuit board is settled and is slided in chamber (45) and is equipped with first push pedal (53), the circuit board is settled chamber (45) and is still slided and is equipped with second push pedal (51), second push pedal (51) with first push pedal (53) terminal surface is connected through fifth spring (56) in opposite directions, be equipped with via hole (52) on second push pedal (51), slide in via hole (52) and be equipped with pull rod (50), pull rod (50) with terminal surface fixed connection before first push pedal (53).

7. The use method of the ic board solder pin cutter according to any one of claims 1 to 6, wherein: comprises the following steps;

s1, selecting a grinding wheel (14) with a proper size to be mounted at an output shaft end of a motor (13) according to the size of an integrated circuit board to be cut;

s2, rotating the hand-operated lever (38) to adjust the distance between the two fixing plates (43) to be suitable for the width of the integrated circuit board, inserting the welding surface of the welding pin of the integrated circuit board downwards from the opening at the rear end of the circuit board arranging cavity (45), and abutting against the front end surface of the second push plate (51), wherein the rear end surface of the integrated circuit board is positioned on the front side of the grinding wheel (14);

s3, starting a motor (13) to enable the grinding wheel (14) to rotate, and manually pressing the pressing plate (30) downwards at the moment to enable welding pins of the integrated circuit board to be cut to be lower than the upper end face of the grinding wheel (14);

s4, the pressing plate (30) is pressed to prevent hands from being loosened, the pull rod (50) is pulled backwards to enable welding feet of the integrated circuit board to be cut by the grinding wheel (14), and at the moment, an operator adjusts the pressing plate (30) back and forth according to the condition of the welding feet of the lower end face of the integrated circuit board, so that the welding feet of the lower end face of the integrated circuit board are cut and polished to be smooth.