CN219819091U

CN219819091U - Multifunctional polishing device

Info

Publication number: CN219819091U
Application number: CN202321048679.2U
Authority: CN
Inventors: 邱吉欣; 邱肖剑; 陆财伟; 刘陈陈
Original assignee: Fujian Huisenbao Overall Home Furnishing Co ltd
Current assignee: Fujian Huisenbao Overall Home Furnishing Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-10-13
Anticipated expiration: 2033-05-05

Abstract

The utility model belongs to the technical field of polishing devices, in particular to a multifunctional polishing device which comprises a workbench; a U-shaped column is fixedly connected to the top end of the outer wall of the workbench; a sliding block is arranged on one side of the inner wall of the U-shaped column through a U-shaped plate; the bottom end of the outer wall of the sliding block is fixedly connected with a grinding machine body; an adjusting piece is arranged on one side of the inner wall of the U-shaped plate, and the sliding block moves through the adjusting piece; a cleaning piece is arranged on one side of the outer wall of the sliding block; in order to solve the timber grinding device among the prior art at the during operation most not have the function of clearance sweeps, most is to clear up the sweeps after polishing, and when the sweeps is stopped on the timber of polishing, not only can influence the staff and observe the condition of polishing of timber, and some tiny sweeps can float in the air, get into staff's health through the respiratory tract, cause the problem of harm to staff's health.

Description

Multifunctional polishing device

Technical Field

The utility model belongs to the technical field of polishing devices, and particularly relates to a multifunctional polishing device.

Background

The main effect of the polishing device is to polish and polish the object to be polished, so that the concave-convex parts on the surface of the object are polished to be smooth, and therefore the polishing device is commonly used for polishing wood, so that the surface of the wood is polished to be smoother and smoother, thereby not only ensuring that the appearance of the wood is more attractive, but also facilitating the next process of the wood.

The utility model discloses a chinese patent with publication No. CN215588736U discloses a multi-functional timber grinding device, comprises a workbench, the bottom fixed mounting of workstation has the support column, there is the first unable adjustment base that fixed mounting is located the workstation top at the top of support column, this multi-functional timber grinding device, through motor assembly's setting, can effectually drive the subassembly of polishing, utilize undercut template and second connecting rod, can polish ligneous lateral wall, the effectual work efficiency of timber that has improved, carry out through the setting of subassembly of polishing, can effectually polish work to timber, through the setting of first unable adjustment subassembly and second unable adjustment subassembly, can fix timber, the effectual in-process of having avoided timber to polish appears the skew condition, make things convenient for people to polish the operation to timber.

Most wood polishing devices in the prior art have no function of cleaning scraps during working, most waste scraps are cleaned after polishing, and when the waste scraps stay on polished wood, the wood polishing conditions can be observed by workers, and some fine waste scraps can float in the air and enter the body of the workers through respiratory tracts, so that the health of the workers is endangered.

To this end, the utility model provides a multifunctional grinding device.

Disclosure of Invention

In order to make up the deficiency of the prior art, solve the prior art timber grinding device in the work most have not clear up the function of sweeps, most clear up the sweeps after polishing, and when the sweeps are stopped on the timber being polished, not only can influence staff's observation timber polishing condition, and some tiny sweeps can float in the air, get into staff's health through the respiratory tract, cause the problem of harm to staff's health, the utility model provides a multifunctional grinding device.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a multifunctional polishing device, which comprises a workbench; a U-shaped column is fixedly connected to the top end of the outer wall of the workbench; a sliding block is arranged on one side of the inner wall of the U-shaped column through a U-shaped plate; the bottom end of the outer wall of the sliding block is fixedly connected with a grinding machine body; an adjusting piece is arranged on one side of the inner wall of the U-shaped plate, and the sliding block moves through the adjusting piece; a cleaning piece is arranged on one side of the outer wall of the sliding block; a pair of square through grooves are formed in the top end of the outer wall of the workbench, and the grinding machine body is positioned in the middle of each square through groove; the bottom end of the outer wall of the tabletop of the workbench is provided with a collecting box, a pair of square through grooves are positioned between the top end openings of the collecting box, and the top end of the outer wall of the collecting box is in contact with the bottom end of the outer wall of the tabletop of the workbench; the outer side wall of the grinding machine body is fixedly connected with a pair of square shells through a pair of fixed blocks, the bottom ends of the square shells are in an opening shape, and the pair of square shells are symmetrical relative to the central line of the grinding machine body; the top ends of the inner walls of the square shells are fixedly connected with cleaning plates through springs, and the outer side walls of the cleaning plates are in contact with the inner side walls of the square shells; make this device not only more convenient the ligneous circumstances of polishing of observing, and safer.

Preferably, the adjusting member includes a small-sized motor; the outer side wall of the small motor is fixedly connected to the bottom end of the inner wall of the U-shaped plate; the output end of the small motor is provided with a threaded rotating shaft, one end of the outer wall of the threaded rotating shaft penetrates through the sliding block, and the threaded rotating shaft is in threaded connection with the sliding block; the top end of the outer wall of the sliding block is connected to the top end of the inner wall of the U-shaped plate in a sliding manner; make this device not only can be high-efficient and simple with timber polishing, and can clear up the sweeps.

Preferably, the cleaning member comprises a dust collection device body; the bottom end of the outer wall of the dust collection device body is fixedly connected to the center of the top end of the outer wall of the U-shaped column; an inclined plate is fixedly connected to one side of the outer wall of the sliding block; one end of the outer wall of the inclined plate is fixedly connected with a dust collection opening which is inclined; the output end of the dust collection device body is provided with a hose, one end of the outer wall of the hose is fixedly connected to the top end of the outer wall of the dust collection port, and the hose is communicated with the dust collection port; the device can ensure the health of the staff.

Preferably, a first through groove is formed in one side of the outer wall of the U-shaped column; the outer side wall of the U-shaped plate is connected to the inner side wall of the first through groove in a sliding manner, and one end of the outer wall of the U-shaped plate is in contact with one side of the inner wall of the U-shaped column; the top end of the outer wall of the U-shaped column is connected with a first threaded rod in a threaded manner, the bottom end of the outer wall of the first threaded rod penetrates through the U-shaped column, and the first threaded rod is connected to the top end of the outer wall of the U-shaped plate in a rotating manner; make this device can carry out height-adjusting according to the ligneous condition of polishing to and can adjust the position of polisher body according to the degree of depth that timber needs to polish.

Preferably, the top end of the outer wall of the workbench is connected with a sliding plate in a sliding manner; a handle is fixedly connected to one side of the outer wall of the sliding plate; a sliding through groove is formed in the bottom end of one side of the outer wall of the sliding plate; the inner side wall of the sliding through groove is connected with a pair of clamping blocks in a sliding manner; the edge of one side of the outer wall of the sliding plate is fixedly connected with a fixed plate, one side of the outer wall of the fixed plate is rotationally connected with a bidirectional threaded rod, one end of the outer wall of the bidirectional threaded rod penetrates through the fixed plate and the pair of clamping blocks, and the bidirectional threaded rod is in threaded connection with the pair of clamping blocks; the pair of clamping blocks are symmetrical about the center line of the workbench; make this device not only can control the speed that timber polished when timber polishes, still conveniently run through the condition that timber polished to and make timber more convenient to the polisher body remove.

Preferably, the outer side wall of the handle is provided with anti-skid patterns; the pushing plate can slide the plate more conveniently.

The beneficial effects of the utility model are as follows:

1. according to the multifunctional polishing device, the sliding block reciprocates on the U-shaped plate through the forward and reverse rotation of the small motor, so that the sliding block drives the polishing machine body to reciprocate, the reciprocating motion of the polishing machine body is matched with the manual pushing of the wood to the polishing machine body slowly, the wood can be polished completely, and the reciprocating motion of the polishing machine body can drive the cleaning plate to reciprocate, and therefore the device can polish the wood efficiently and simply and clean scraps.

2. According to the multifunctional polishing device, the dust collection opening is fixedly connected to the sliding block through the inclined plate and is inclined, so that the dust collection opening can be aligned to a polishing place of the polishing machine body, waste scraps polished by the polishing machine body can be sucked and cleaned through the dust collection opening and the hose by the dust collection device body through suction, and the dust collection opening is fixedly connected to the sliding block through the inclined plate and moves when the sliding block and the polishing machine body move, so that the dust collection opening is always aligned to the polishing place of the polishing machine body, and the dust collection opening is connected with the dust collection device body through the hose, so that the movement of the dust collection opening does not influence the operation of the device, the dust collection opening can absorb the tiny waste scraps, and the device can ensure the health of workers.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a schematic view of a partial structure in the present utility model;

FIG. 4 is an exploded view of the square shell and the clearance plate;

FIG. 5 is an exploded view of the clamp block and slide plate;

in the figure: 1. a work table; 2. a U-shaped column; 3. a U-shaped plate; 4. a sliding block; 5. a sander body; 6. square through groove; 7. a collection box; 8. a square shell; 9. a cleaning plate; 10. a small motor; 11. a threaded spindle; 12. a dust collection device body; 13. a sloping plate; 14. a dust collection port; 15. a hose; 16. a first through groove; 17. a first threaded rod; 18. a sliding plate; 19. a handle; 20. sliding through grooves; 21. a clamping block; 22. a fixing plate; 23. a bi-directional threaded rod.

Detailed Description

The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1 to 5, a multifunctional polishing device according to the present utility model includes a table 1; the top end of the outer wall of the workbench 1 is fixedly connected with a U-shaped column 2; a sliding block 4 is arranged on one side of the inner wall of the U-shaped column 2 through a U-shaped plate 3; the bottom end of the outer wall of the sliding block 4 is fixedly connected with a grinding machine body 5; an adjusting piece is arranged on one side of the inner wall of the U-shaped plate 3, and the sliding block 4 moves through the adjusting piece; a cleaning piece is arranged on one side of the outer wall of the sliding block 4; a pair of square through grooves 6 are formed in the top end of the outer wall of the workbench 1, and a polisher body 5 is located in the middle of each square through groove 6; the bottom end of the outer wall of the tabletop of the workbench 1 is provided with a collecting box 7, a pair of square through grooves 6 are positioned between the top end openings of the collecting box 7, and the top end of the outer wall of the collecting box 7 is in contact with the bottom end of the outer wall of the tabletop of the workbench 1; the outer side wall of the grinding machine body 5 is fixedly connected with a pair of square shells 8 through a pair of fixed blocks, the bottom ends of the square shells 8 are in an opening shape, and the pair of square shells 8 are symmetrical about the central line of the grinding machine body 5; the top ends of the inner walls of the square shells 8 are fixedly connected with cleaning plates 9 through springs, and the outer side walls of the cleaning plates 9 are in contact with the inner side walls of the square shells 8; in the prior art, the wood polishing device in the prior art has no function of cleaning the scraps when in operation, the scraps are cleaned after polishing, and when the scraps stay on the polished wood, the polishing condition of the wood is not only influenced by workers, but also some tiny scraps float in the air, enter the body of the workers through the respiratory tract, and cause harm to the health of the workers, therefore, the wood polishing device in the utility model does not describe the prior art, the polishing body 5 is placed on the workbench 1, then the sliding block 4 is driven to move through the adjusting piece, thereby the sliding block 4 drives the polishing body 5 to reciprocate to polish the wood, when the polishing body 5 is polished, the back and forth movement of the polishing body 5 drives the fixed block and the square shell 8 to move, thereby driving the cleaning plate 9 to move, and the cleaning plate 9 is fixedly connected to the top of the inner wall of the square shell 8 through springs, so that the cleaning plate 9 is propped against the polished wood, the scraps polished by the body 5 can be pushed to move in the process of the cleaning plate 9, thereby falling down from the prior art, the wood can not be blocked by the adjusting piece, and the wood polishing device in the process of polishing device in the utility model can not be more convenient for the dust cleaning by the people.

The adjusting member comprises a small motor 10; the outer side wall of the small motor 10 is fixedly connected to the bottom end of the inner wall of the U-shaped plate 3; the output end of the small motor 10 is provided with a threaded rotating shaft 11, one end of the outer wall of the threaded rotating shaft 11 penetrates through the sliding block 4, and the threaded rotating shaft 11 is in threaded connection with the sliding block 4; the top end of the outer wall of the sliding block 4 is connected to the top end of the inner wall of the U-shaped plate 3 in a sliding manner; during operation, through the positive and negative rotation of small-size motor 10, make slider 4 reciprocating motion on U-shaped board 3 to make slider 4 drive polisher body 5 reciprocating motion, thereby make the reciprocating motion cooperation staff of polisher body 5 slowly push away timber to polisher body 5, make timber can be polished completely, and the reciprocating motion of polisher body 5 can drive clearance board 9 reciprocating motion, thereby make this device not only can be high-efficient and simple polish timber, and can clear up the sweeps.

The cleaning member includes a dust collection device body 12; the bottom end of the outer wall of the dust collection device body 12 is fixedly connected to the center of the top end of the outer wall of the U-shaped column 2; an inclined plate 13 is fixedly connected to one side of the outer wall of the sliding block 4; a dust collection opening 14 is fixedly connected to one end of the outer wall of the inclined plate 13, and the dust collection opening 14 is inclined; the output end of the dust collection device body 12 is provided with a hose 15, one end of the outer wall of the hose 15 is fixedly connected to the top end of the outer wall of the dust collection port 14, and the hose 15 is communicated with the dust collection port 14; during operation, the dust collection device body 12 is not described in the prior art, the dust collection opening 14 is fixedly connected to the sliding block 4 through the inclined plate 13, and the dust collection opening 14 is inclined, so that the dust collection opening 14 can be aligned to a place where the grinding machine body 5 is ground, therefore, the dust collection device body 12 can suck and clean waste scraps ground by the grinding machine body 5 through the dust collection opening 14 and the hose 15 through suction, and the dust collection opening 14 is fixedly connected to the sliding block 4 through the inclined plate 13, so that the dust collection opening 14 moves when the sliding block 4 and the grinding machine body 5 move, the dust collection opening 14 is always aligned to the place where the grinding machine body 5 is ground, and the dust collection opening 14 is connected with the dust collection device body 12 through the hose 15, so that the movement of the dust collection opening 14 does not affect the operation of the device, and the dust collection opening 14 can absorb tiny waste scraps, so that the device can ensure the health of staff.

A first through groove 16 is formed in one side of the outer wall of the U-shaped column 2; the outer side wall of the U-shaped plate 3 is connected to the inner side wall of the first through groove 16 in a sliding manner, and one end of the outer wall of the U-shaped plate 3 is contacted with one side of the inner wall of the U-shaped column 2; the top end side of the outer wall of the U-shaped column 2 is connected with a first threaded rod 17 in a threaded manner, the bottom end of the outer wall of the first threaded rod 17 penetrates through the U-shaped column 2, and is rotatably connected to the top end of the outer wall of the U-shaped plate 3; during operation, through rotating first threaded rod 17, make first threaded rod 17, upwards move, thereby make first threaded rod 17 drive U-shaped board 3 upwards move, when reversing first threaded rod 17, can drive U-shaped board 3 and move downwards, thereby make this device can adjust the height of polisher body 5 according to ligneous height, thereby make polisher body 5 can polish the timber of different height, thereby make this device can adjust the height according to polishing ligneous condition, and can adjust the position of polisher body 5 according to the degree of depth that timber needs to polish, because of small-size motor 10 and polisher body 5 and U-shaped board 3 etc. are lighter, when making the position of rotating first threaded rod 17 regulation U-shaped board 3, it is lighter, and can also use the instrument help to rotate first threaded rod 17.

The top end of the outer wall of the workbench 1 is connected with a sliding plate 18 in a sliding manner; a handle 19 is fixedly connected to one side of the outer wall of the sliding plate 18; a sliding through groove 20 is formed at the bottom end of one side of the outer wall of the sliding plate 18; the inner side wall of the sliding through groove 20 is connected with a pair of clamping blocks 21 in a sliding manner; a fixed plate 22 is fixedly connected to the edge of one side of the outer wall of the sliding plate 18, a bidirectional threaded rod 23 is rotatably connected to one side of the outer wall of the fixed plate 22, one end of the outer wall of the bidirectional threaded rod 23 penetrates through the fixed plate 22 and the pair of clamping blocks 21, and the bidirectional threaded rod 23 is in threaded connection with the pair of clamping blocks 21; a pair of the clamping blocks 21 are symmetrical about the center line of the workbench 1; during operation, through placing timber on workstation 1, then rotate two-way threaded rod 23 and make a pair of grip block 21 remove to the center, thereby make a pair of grip block 21 grasp timber, and make timber by centre department that the centre gripping is located workstation 1, make things convenient for sweeps more when cleaning board 9 clearance sweeps drop collecting box 7, then promote sliding plate 18, make sliding plate 18 drive timber and slowly remove to polisher body 5, thereby make polisher body 5 clean timber with polishing completely, thereby make this device not only can control the speed that timber was polished when timber was polished, still conveniently run through the condition that timber was polished, and make timber more convenient remove to polisher body 5.

The outer side wall of the handle 19 is provided with anti-skid patterns; in operation, the anti-slip patterns are formed on the outer side wall of the handle 19, so that the push plate is more convenient to slide on the plate 18.

Working principle: the grinding machine body 5 and the dust collection device body 12 are both in the prior art, not described, by placing wood on the workbench 1, and then by forward and reverse rotation of the small motor 10, the sliding block 4 reciprocates on the U-shaped plate 3, so that the sliding block 4 drives the grinding machine body 5 to reciprocate, and the reciprocating motion of the grinding machine body 5 is matched with the pushing of workers to the grinding machine body 5, so that the wood can be completely ground, when the grinding machine body 5 grinds the wood, the reciprocating motion of the grinding machine body 5 can drive the fixing block and the square shell 8 to move, so that the cleaning plate 9 is driven to move, the cleaning plate 9 is propped against the ground wood by the springs through the fixedly connected cleaning plate 9 on the top end of the inner wall of the square shell 8, so that scraps of the grinding machine body 5 can be pushed to move in the moving process of the cleaning plate 9, so that the wood falls off under the movement of the cleaning plate 9, falls into the collecting box 7, is fixedly connected on the sliding block 4 through the inclined plate 13 by the dust collection opening 14, and the dust collection opening 14 is inclined, so that the dust collection opening 14 can be aligned with the polishing place of the polishing machine body 5, the dust collection device body 12 can suck and clean the waste scraps polished by the polishing machine body 5 through the dust collection opening 14 and the hose 15 by suction, the dust collection opening 14 is fixedly connected on the sliding block 4 through the inclined plate 13, the dust collection opening 14 moves along with the movement of the sliding block 4 and the polishing machine body 5, so that the dust collection opening 14 is always aligned with the polishing place of the polishing machine body 5, the movement of the dust collection opening 14 does not influence the operation of the device because the dust collection opening 14 is connected with the dust collection device body 12 through the hose 15, so that the dust collection opening 14 can absorb tiny waste scraps, so that the device can ensure the health of workers, collect and clean the scraps when the wood is polished, so that the scraps can not cover the sight of the workers, and fine scraps can not enter the respiratory tract of the workers, thereby ensuring that the device is more convenient for observing the polishing condition of the wood, is safer, and can drive the U-shaped plate 3 to move upwards by rotating the first threaded rod 17, and can drive the U-shaped plate 3 to move downwards when the first threaded rod 17 is reversed, so that the device can adjust the height of the polisher body 5 according to the height of the wood, so that the polisher body 5 can polish the wood with different heights, thereby ensuring that the device can adjust the height according to the polishing condition of the wood, and the position of the grinding machine body 5 can be adjusted according to the depth of the wood to be ground, because the small motor 10, the grinding machine body 5, the U-shaped plate 3 and the like are lighter, when the U-shaped plate 3 is adjusted by rotating the first threaded rod 17, the first threaded rod 17 can be rotated easily, tools can be used for assisting in rotating the first threaded rod 17, and by placing the wood on the workbench 1 and then rotating the bidirectional threaded rod 23, the pair of clamping blocks 21 move towards the center, so that the pair of clamping blocks 21 clamp the wood, the wood is clamped at the center of the workbench 1, the cleaning plate 9 is enabled to more conveniently drop into the collecting box 7 when the waste is cleaned, then the sliding plate 18 is pushed, the sliding plate 18 drives the wood to move slowly towards the grinding machine body 5, so that the grinding machine body 5 can clean the wood completely, the device can control the wood grinding speed when the wood is ground, it is also convenient to run through the condition that timber was polished to and make timber more convenient to the polisher body 5 remove, and offered anti-skidding line through the lateral wall of handle 19, more convenient when making push pedal sliding plate 18.

The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A multifunctional polishing device is characterized by comprising a workbench (1); a U-shaped column (2) is fixedly connected to the top end of the outer wall of the workbench (1); one side of the inner wall of the U-shaped column (2) is provided with a sliding block (4) through a U-shaped plate (3); the bottom end of the outer wall of the sliding block (4) is fixedly connected with a grinding machine body (5); an adjusting piece is arranged on one side of the inner wall of the U-shaped plate (3), and the sliding block (4) moves through the adjusting piece; a cleaning piece is arranged on one side of the outer wall of the sliding block (4); a pair of square through grooves (6) are formed in the top end of the outer wall of the workbench (1), and the grinding machine body (5) is located in the middle of each square through groove (6); the bottom end of the outer wall of the table top of the workbench (1) is provided with a collecting box (7), a pair of square through grooves (6) are arranged between the top end openings of the collecting box (7), and the top end of the outer wall of the collecting box (7) is in contact with the bottom end of the outer wall of the table top of the workbench (1); the outer side wall of the grinding machine body (5) is fixedly connected with a pair of square shells (8) through a pair of fixed blocks, the bottom ends of the square shells (8) are in an opening shape, and the pair of square shells (8) are symmetrical with respect to the central line of the grinding machine body (5); the top ends of the inner walls of the pair of Fang Ke (8) are fixedly connected with cleaning plates (9) through springs, and the outer side walls of the cleaning plates (9) are in contact with the inner side walls of the square shell (8).

2. A multi-function grinding apparatus as defined in claim 1, wherein: the adjusting member comprises a small motor (10); the outer side wall of the small motor (10) is fixedly connected to the bottom end of the inner wall of the U-shaped plate (3); the output end of the small motor (10) is provided with a threaded rotating shaft (11), one end of the outer wall of the threaded rotating shaft (11) penetrates through the sliding block (4), and the threaded rotating shaft (11) is in threaded connection with the sliding block (4); the top end of the outer wall of the sliding block (4) is slidably connected to the top end of the inner wall of the U-shaped plate (3).

3. A multi-function grinding apparatus as defined in claim 2, wherein: the cleaning piece comprises a dust collection device body (12); the bottom end of the outer wall of the dust collection device body (12) is fixedly connected to the center of the top end of the outer wall of the U-shaped column (2); an inclined plate (13) is fixedly connected to one side of the outer wall of the sliding block (4); one end of the outer wall of the inclined plate (13) is fixedly connected with a dust collection opening (14), and the dust collection opening (14) is inclined; the output end of the dust collection device body (12) is provided with a hose (15), one end of the outer wall of the hose (15) is fixedly connected to the top end of the outer wall of the dust collection opening (14), and the hose (15) is communicated with the dust collection opening (14).

4. A multi-purpose grinding apparatus as defined in claim 3, wherein: a first through groove (16) is formed in one side of the outer wall of the U-shaped column (2); the outer side wall of the U-shaped plate (3) is connected to the inner side wall of the first through groove (16) in a sliding mode, and one end of the outer wall of the U-shaped plate (3) is in contact with one side of the inner wall of the U-shaped column (2); the U-shaped column (2) is connected with a first threaded rod (17) through threads on one side of the top end of the outer wall of the U-shaped column (2), and the bottom end of the outer wall of the first threaded rod (17) penetrates through the U-shaped column (2) and is connected to the top end of the outer wall of the U-shaped plate (3) in a rotating mode.

5. A multi-purpose grinding apparatus as defined in claim 4, wherein: the top end of the outer wall of the workbench (1) is connected with a sliding plate (18) in a sliding manner; a handle (19) is fixedly connected to one side of the outer wall of the sliding plate (18); a sliding through groove (20) is formed in the bottom end of one side of the outer wall of the sliding plate (18); the inner side wall of the sliding through groove (20) is connected with a pair of clamping blocks (21) in a sliding manner; a fixed plate (22) is fixedly connected to the edge of one side of the outer wall of the sliding plate (18), a bidirectional threaded rod (23) is rotatably connected to one side of the outer wall of the fixed plate (22), one end of the outer wall of the bidirectional threaded rod (23) penetrates through the fixed plate (22) and the pair of clamping blocks (21), and the bidirectional threaded rod (23) is in threaded connection with the pair of clamping blocks (21); the pair of clamping blocks (21) are symmetrical with respect to the center line of the workbench (1).

6. A multi-purpose grinding apparatus as defined in claim 5, wherein: anti-skid patterns are formed in the outer side wall of the handle (19).