CN113510581B

CN113510581B - Abrasive band machine for wood working

Info

Publication number: CN113510581B
Application number: CN202111072084.6A
Authority: CN
Inventors: 翟其恒
Original assignee: Nantong Hengxiang Wood Industry Co ltd
Current assignee: Nantong Hengxiang Wood Industry Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-11-12
Anticipated expiration: 2041-09-14
Also published as: CN113510581A

Abstract

The invention relates to the technical field of wood processing equipment, in particular to an abrasive belt machine for wood processing, which comprises a machine frame, wherein two transverse plates are symmetrically and fixedly connected to the top of the machine frame, two belt wheels are rotatably connected between the two transverse plates, an abrasive belt is sleeved on each belt wheel, a C-shaped blocking frame is fixedly connected to the top end of the machine frame, a cleaning mechanism is arranged on the outer surface of the machine frame below the abrasive belt, and the cleaning mechanism is used for cleaning wood chips on the surface of the abrasive belt. The first screw rod is driven to rotate through the first motor, the sleeve in threaded connection with the first screw rod drives the push rod to move, the wood dust adhered to the outer surface of the abrasive belt is swept by the brush fixedly connected with the upper surface of the push rod, and the situation that the wood dust fills the pits in the surface of the abrasive belt to affect the grinding and polishing efficiency of the abrasive belt on wood is avoided.

Description

Abrasive band machine for wood working

Technical Field

The invention relates to the technical field of wood processing equipment, in particular to an abrasive belt machine for wood processing.

Background

The abrasive belt machine is common equipment for grinding and polishing wooden plates in the wood processing industry, utilizes an abrasive belt which circulates ceaselessly to grind and polish the wood, so that the surfaces of the plates are smoother and smoother, and the fatigue of operators working for a long time can be reduced.

The existing abrasive belt machine is characterized in that a plate is placed on an abrasive belt, then the machine is started, so that the abrasive belt polishes the plate, but when the plate is polished by the abrasive belt, wood fibers on the surface of the plate are ground into fine particles, so that the abrasive belt is stained with more powdery wood chips, and the powdery wood chips are filled in depressions of the abrasive belt, so that the friction coefficient of the abrasive belt is reduced, and the polishing efficiency of the abrasive belt on wood is influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an abrasive belt machine for wood processing.

The technical scheme adopted by the invention for solving the technical problems is as follows: the abrasive belt machine for wood processing comprises a machine frame, wherein two transverse plates are symmetrically and fixedly connected to the top of the machine frame, two belt wheels are rotatably connected between the two transverse plates, an abrasive belt is sleeved on each belt wheel, a C-shaped blocking frame is fixedly connected to the top end of the machine frame, a cleaning mechanism is arranged on the outer surface of the machine frame below the abrasive belt and used for cleaning wood chips on the surface of the abrasive belt;

the cleaning mechanism comprises a material receiving hopper, a first motor, a first screw rod, a sleeve, a movable plate, a push rod, brushes, fixed blocks, a connecting plate and a magnetic ring, wherein the material receiving hopper is fixedly connected with the outer surface of the frame, the first motor is fixedly connected with the outer surface of one side of the material receiving hopper, the output end of the first motor penetrates through the outer surface of the material receiving hopper and is fixedly connected with one end of the first screw rod, the other end of the first screw rod is inserted into the sleeve, the first screw rod is in threaded connection with the inner wall of the sleeve, one end of the sleeve, far away from the first screw rod, is fixedly connected with the outer surface of the movable plate, one end of the push rod is fixedly connected with the outer surface of the movable plate, the upper surface of the push rod is fixedly connected with a plurality of brushes, the inner surfaces of two opposite sides of the material receiving hopper are symmetrically and fixedly connected with the two fixed blocks, and the outer surfaces of the two fixed blocks are both rotatably connected with the connecting plate, one end of the connecting plate, which is far away from the fixed block, is rotatably connected with the outer surface of the push rod, and the outer surface of the moving plate is fixedly connected with a magnetic ring.

Specifically, the upper surface that the C shape kept off the frame is equipped with moving mechanism, moving mechanism includes backup pad, second screw rod, second motor and removes the frame, two backup pads of the upper surface symmetry fixedly connected with of C shape fender frame, two rotate between the backup pad and be connected with the second screw rod, the second motor is connected with the surface fixed of one of them backup pad, and the output of second motor and the one end fixed connection of second screw rod, the lower surface and the second screw rod threaded connection that remove the frame.

Specifically, the surface of removal frame is equipped with supports tight mechanism, support tight mechanism and include third screw rod, third motor, clamp plate, guide arm, top spring, C shaped plate, pressure sensor and centre gripping subassembly, the last fixed surface who removes the frame is connected with the third motor, the output of third motor run through the top of removing the frame and with the one end fixed connection of third screw rod, the other end of third screw rod run through the upper surface of clamp plate and rather than threaded connection, the top of guide arm run through the upper surface of clamp plate and rather than sliding connection, the bottom fixedly connected with C shaped plate of guide arm, the last fixed surface of C shaped plate is connected with pressure sensor, the top spring cover is located on the guide arm, and the top spring sets up between clamp plate and pressure sensor.

Specifically, the centre gripping subassembly includes double threaded screw, two splint and shakes the wheel, double threaded screw rotates with the inner wall of C shaped plate to be connected, double threaded screw runs through the surface of two splint and rather than threaded connection, shake wheel and double threaded screw's one end terminal surface fixed connection.

Specifically, two be equipped with balance mechanism between the diaphragm, balance mechanism includes fixed plate, belt, running roller, fixed column, top pearl and fourth motor, two bisymmetry fixedly connected with four fixed plates between the diaphragm, four rotate between the fixed plate and be connected with four running rollers, the external surface fixed connection of fourth motor and fixed plate, the output of fourth motor run through the surface of fixed plate and with one of them the external surface fixed connection of running roller, the belt cover is located four the surface of running roller, the even fixedly connected with a plurality of fixed columns of surface of belt, it is a plurality of the terminal surface of fixed column all is equipped with the top pearl.

The receiving hopper is characterized in that a receiving mechanism is arranged at the bottom of the receiving hopper, the receiving mechanism comprises a communicating pipe, an air suction pump, a discharge port, a collecting box and a through hole, the bottom of the receiving hopper is fixedly connected with the communicating pipe, the communicating pipe is communicated with the inside of the receiving hopper, the communicating pipe is kept away from the one end of the receiving hopper and is fixedly connected with the air suction pump, the outer surface of the communicating pipe above the air suction pump is provided with the discharge port, the collecting box is connected with the discharge port in a sliding mode, and the bottom of the collecting box is provided with a plurality of through holes uniformly.

Specifically, the top bead is made of a rubber material.

The invention has the beneficial effects that:

(1) the first screw rod is driven to rotate by the first motor, the sleeve in threaded connection with the first screw rod drives the push rod to move, the saw dust adhered to the outer surface of the abrasive belt is swept by the brush fixedly connected to the upper surface of the push rod, the situation that the pits on the surface of the abrasive belt are filled with the saw dust is avoided, and the grinding and polishing efficiency of the abrasive belt on wood is influenced is avoided; the direction of the brush is opposite to the direction of the moving mechanism driving the wood to move, so that the brush can push the abrasive belt in the opposite direction after the abrasive belt is far away from the wood, the abrasive belt returns to the central position again, the abrasive belt is prevented from deviating in work, the edge of the abrasive belt can be protected from being in contact with the frame, the edge of the abrasive belt is prevented from being abraded, and the service life of the abrasive belt is prevented from being influenced.

(2) The third motor drives the third screw rod to rotate, so that the pressing plate in threaded connection with the third screw rod moves towards the abrasive belt, and the top spring is arranged between the C-shaped plate and the pressing plate, so that when the pressing plate is pressed downwards, the pressing plate applies downward force to the clamping assembly, wood can be tightly attached to the abrasive belt, and the bottom end of the top spring abuts against the outer surface of the pressure sensor, so that the pressure sensor can detect the pressure applied to the top spring, and whether the third motor continues to apply pressure to the pressing plate or not is controlled, so that the pressure applied to the wood by the abutting mechanism can be better mastered, and the polished surface of the wood is more uniformly stressed; after a period of time is polished on wood, the polished surface of the wood is thinned, so that the pressure of the top spring on the pressure sensor is reduced, at the moment, the pressure sensor detects that the thrust of the top spring on the wood is insufficient, and the third motor is started to apply pressure on the pressing plate, so that the wood can be always kept under a relatively balanced stress.

(3) The second screw rod is driven to rotate by the second motor, so that the moving frame in threaded connection with the second screw rod moves left and right, the moving frame drives the pressing plate to move, the clamped wood can transversely move on the abrasive belt, and the problem that the abrasive belt is influenced by large difference of surface abrasion degrees due to long-time contact of the wood and the same surface of the abrasive belt is avoided; and can prevent the abrasive belt from overheating due to long-term sanding, which causes thermal deformation of the abrasive belt.

(4) The fourth motor drives one of the rollers to rotate, so that the belt sleeved on the rollers can rotate, and the fixed columns fixedly connected with the surface of the belt are driven to move along with the fixed columns.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a left side view structural schematic diagram of an abrasive belt machine for wood processing according to the present invention;

FIG. 2 is a schematic diagram of a right-view structure of an abrasive belt machine for wood processing according to the present invention;

FIG. 3 is a schematic side view of an abrasive belt machine for wood working according to the present invention;

FIG. 4 is a schematic view of a partial cross-sectional structure of an abrasive belt machine for wood processing according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 1;

FIG. 6 is an enlarged view of the structure at B in FIG. 2;

FIG. 7 is an enlarged view of the structure of FIG. 3 at C;

FIG. 8 is an enlarged view of the structure at D in FIG. 4;

fig. 9 is an enlarged view of the structure at E in fig. 4.

In the figure: 1. a frame; 2. a cleaning mechanism; 201. a receiving hopper; 202. a first motor; 203. a first screw; 204. a sleeve; 205. moving the plate; 206. a push rod; 207. a brush; 208. a fixed block; 209. a connecting plate; 210. a magnetic ring; 3. a moving mechanism; 301. a support plate; 302. a second screw; 303. a second motor; 304. a movable frame; 4. a tightening mechanism; 401. a third screw; 402. a third motor; 403. pressing a plate; 404. a guide bar; 405. a spring is supported; 406. a C-shaped plate; 407. a pressure sensor; 5. a clamping assembly; 501. a double-ended screw; 502. a splint; 503. shaking the wheel; 6. a balancing mechanism; 601. a fixing plate; 602. a belt; 603. a roller; 604. fixing a column; 605. a top bead; 606. a fourth motor; 7. a material receiving mechanism; 701. a communicating pipe; 702. an air pump; 703. a discharge port; 704. a collection box; 705. a through hole; 8. a transverse plate; 9. a pulley; 10. an abrasive belt; 11. c-shaped blocking frame.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-9, the belt sander for wood processing of the present invention comprises a frame 1, wherein two transverse plates 8 are symmetrically and fixedly connected to the top of the frame 1, two belt wheels 9 are rotatably connected between the two transverse plates 8, an abrasive belt 10 is sleeved on each belt wheel 9, a C-shaped retaining frame 11 is fixedly connected to the top end of the frame 1, a cleaning mechanism 2 is arranged on the outer surface of the frame 1 below the abrasive belt 10, and the cleaning mechanism 2 is used for cleaning wood chips on the surface of the abrasive belt 10;

the cleaning mechanism 2 comprises a material receiving hopper 201, a first motor 202, a first screw 203, a sleeve 204, a moving plate 205, a push rod 206, brushes 207, a fixed block 208, a connecting plate 209 and a magnetic ring 210, the material receiving hopper 201 is fixedly connected with the outer surface of the frame 1, the first motor 202 is fixedly connected with the outer surface of one side of the material receiving hopper 201, the output end of the first motor 202 penetrates through the outer surface of the material receiving hopper 201 and is fixedly connected with one end of the first screw 203, the other end of the first screw 203 is inserted in the sleeve 204, the first screw 203 is in threaded connection with the inner wall of the sleeve 204, one end of the sleeve 204 far away from the first screw 203 is fixedly connected with the outer surface of the moving plate 205, one end of the push rod 206 is fixedly connected with the outer surface of the push rod 205, the upper surface of the push rod 206 is fixedly connected with the moving plate 207, the inner surfaces of two opposite sides of the material receiving hopper 201 are symmetrically and fixedly connected with the two fixed blocks 208, the outer surfaces of the two fixed blocks 208 are rotatably connected with the connecting plate 209, one end of the connecting plate 209, which is far away from the fixed block 208, is rotatably connected with the outer surface of the push rod 206, the outer surface of the moving plate 205 is fixedly connected with a magnetic ring 210, and the push rod 206 is made of ferromagnetic material, so that after the push rod 206 is pushed, the magnetic ring 210 can attract the push rod 206, thereby resetting the push rod 206.

Thus, when the abrasive belt 10 rotates, the brush 207 fixedly connected to the upper surface of the push rod 206 will sweep off the wood chips adhered to the outer surface of the abrasive belt 10, so as to prevent the wood chips from filling the depressions on the surface of the abrasive belt 10, thereby affecting the polishing efficiency of the abrasive belt 10 on wood; the first motor 202 drives the first screw rod 203 to rotate, the sleeve 204 in threaded connection with the first screw rod 203 drives the moving plate 205 to move left and right, so that the push rod 206 is driven to move, and because two ends of the push rod 206 are rotationally connected with the inner wall of the material receiving hopper 201 through the connecting plate 209, a parallelogram structure is formed between the push rod 206 and the material receiving hopper 201, when the push rod 206 is pushed, the push rod 206 can move in a parallel state, so that the force applied by the brush 207 to the surface of the abrasive belt 10 is more uniform, and the surface of the abrasive belt 10 is prevented from being wrinkled and damaged; because the direction of the brush 207 is opposite to the direction of the moving mechanism 3 driving the wood to move, the brush 207 can push the abrasive belt 10 in the opposite direction after the abrasive belt is far away from the wood, so that the abrasive belt 10 returns to the central position again, the phenomenon of deviation of the abrasive belt 10 in the work process is avoided, the edge of the abrasive belt 10 can be protected from being in contact with the frame 1, and the service life of the abrasive belt 10 is prevented from being influenced due to abrasion caused by the edge of the abrasive belt 10.

Referring to fig. 5, specifically, the moving mechanism 3 is arranged on the upper surface of the C-shaped blocking frame 11, the moving mechanism 3 includes supporting plates 301, a second screw 302, a second motor 303 and a moving frame 304, the two supporting plates 301 are symmetrically and fixedly connected to the upper surface of the C-shaped blocking frame 11, the second screw 302 is rotatably connected between the two supporting plates 301, the second motor 303 is fixedly connected to the outer surface of one of the supporting plates 301, the output end of the second motor 303 is fixedly connected to one end of the second screw 302, and the lower surface of the moving frame 304 is in threaded connection with the second screw 302.

Referring to fig. 5 and 6, in particular, the outer surface of the moving frame 304 is provided with a tightening mechanism 4, the tightening mechanism 4 includes a third screw 401, a third motor 402, a pressing plate 403 and a guide rod 404, the upper surface of the moving frame 304 is fixedly connected with a third motor 402, the output end of the third motor 402 penetrates through the top end of the moving frame 304 and is fixedly connected with one end of a third screw 401, the other end of the third screw 401 penetrates through the upper surface of the pressing plate 403 and is in threaded connection with the upper surface, the top end of the guide rod 404 penetrates through the upper surface of the pressing plate 403 and is in sliding connection with the upper surface, the bottom end of the guide rod 404 is fixedly connected with a C-shaped plate 406, the upper surface of the C-shaped plate 406 is fixedly connected with a pressure sensor 407, the type of the pressure sensor 407 is PT124G-111, the top spring 405 is sleeved on the guide rod 404, and the top spring 405 is arranged between the pressing plate 403 and the pressure sensor 407.

Referring to fig. 6, in particular, the clamping assembly 5 includes a double-threaded screw 501, two clamping plates 502 and a rocking wheel 503, the double-threaded screw 501 is rotatably connected with the inner wall of the C-shaped plate 406, the double-threaded screw 501 penetrates through the outer surfaces of the two clamping plates 502 and is in threaded connection with the outer surfaces, and the rocking wheel 503 is fixedly connected with one end face of the double-threaded screw 501.

Thus, the wood to be polished is placed between the two clamping plates 502, and the rocking wheel 503 is rotated, so that the double-headed screw 501 drives the two clamping plates 502 to move, so as to clamp the wood;

starting a third motor 402, enabling the third motor 402 to drive a third screw rod 401 to rotate, so that a pressing plate 403 in threaded connection with the third screw rod 401 moves towards the abrasive belt 10, and because a top spring 405 is arranged between a C-shaped plate 406 and the pressing plate 403, when the pressing plate 403 is pressed downwards, the pressing plate 403 applies a downward force to a clamping component 5, so that wood can be tightly attached to the abrasive belt 10; after the wood is polished for a period of time, the polished surface of the wood is thinned, so that the pressure of the top spring 405 on the pressure sensor 407 is reduced, at the moment, the pressure sensor 407 detects that the thrust of the top spring 405 on the wood is insufficient, the third motor 402 is started to apply pressure to the pressing plate 403, and the wood can be always kept under relatively balanced stress.

The second motor 303 drives the second screw 302 to rotate, so that the moving frame 304 in threaded connection with the second screw 302 moves left and right, and the moving frame 304 drives the pressing plate 403 to move, so that the clamped wood can move transversely on the abrasive belt 10, and the problem that the difference of the surface wear degrees of the abrasive belt 10 is large and the service life of the abrasive belt 10 is influenced due to long-time contact between the wood and the same surface of the abrasive belt 10 is avoided; and it is possible to prevent abrasive belt 10 from being overheated due to long-term sanding, resulting in thermal deformation of abrasive belt 10.

Referring to fig. 8, specifically, be equipped with balance mechanism 6 between two diaphragm 8, balance mechanism 6 includes fixed plate 601, belt 602, running roller 603, fixed column 604, top pearl 605 and fourth motor 606, two bisymmetry fixedly connected with four fixed plates 601 between two diaphragm 8, it is connected with four running rollers 603 to rotate between four fixed plates 601, fourth motor 606 is connected with the surface fixed connection of fixed plate 601, the output of fourth motor 606 runs through the surface of fixed plate 601 and is connected with the surface fixed connection of one of them running roller 603, the surface of four running roller 603 is located to belt 602 cover, the even fixedly connected with a plurality of fixed columns 604 of surface of belt 602, the terminal surface of a plurality of fixed columns 604 all is equipped with top pearl 605.

Thus, when the moving mechanism 3 drives the wood to move laterally, the fourth motor 606 drives one of the rollers 603 to rotate, so that the roller 603 can drive the other rollers 603 to rotate through the belt 602, and after the belt 602 rotates, the plurality of fixing posts 604 fixedly connected to the surface of the belt 602 move therewith, because the end surfaces of the fixing posts 604 are provided with the top beads 605, and the top beads 605 are made of rubber material, when the wood is pushed to one side, the belt 602 drives the top beads 605 to move in the same direction therewith, so that the top beads 605 apply the same force as the moving direction thereof to the abrasive belt 10, thereby avoiding increasing the friction force between the abrasive belt 10 and the surface of the wood, and avoiding the occurrence of damage or sand shedding on the surface of the abrasive belt 10.

Referring to fig. 4 and 9, specifically, receiving hopper 201's bottom is equipped with receiving agencies 7, receiving agencies 7 include communicating pipe 701, aspiration pump 702, discharge gate 703, collect box 704 and through-hole 705, receiving hopper 201's bottom fixedly connected with communicating pipe 701, and communicating pipe 701 is linked together with receiving hopper 201's inside, communicating pipe 701 keeps away from receiving hopper 201's one end fixedly connected with aspiration pump 702, communicating pipe 701 is located the surface of aspiration pump 702 top and has seted up discharge gate 703, collect box 704 and the inside sliding connection of discharge gate 703, a plurality of through-holes 705 have evenly been seted up to the bottom of collecting box 704.

So, start aspiration pump 702, make aspiration pump 702 will connect the inside saw-dust gettering of hopper 201 through communicating pipe 701, avoid connecing the inside of hopper 201 to take place to block up, will fall into through communicating pipe 701 by the saw-dust of suction and collect in collecting box 704, treat that timber grinds to finish, directly take out and collect box 704 and can empty the saw-dust, conveniently clear up the saw-dust in the frame 1.

Referring to fig. 8, in particular, the top bead 605 is made of a rubber material.

In this way, top bead 605 is allowed to exert a certain friction force on sanding belt 10 in order to move sanding belt 10.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an abrasive band machine for wood working which characterized in that: the cleaning machine comprises a rack (1), wherein two transverse plates (8) are symmetrically and fixedly connected to the top of the rack (1), two belt wheels (9) are rotatably connected between the two transverse plates (8), an abrasive belt (10) is sleeved on each belt wheel (9), a C-shaped blocking frame (11) is fixedly connected to the top end of the rack (1), a cleaning mechanism (2) is arranged on the outer surface of the rack (1) below the abrasive belt (10), and the cleaning mechanism (2) is used for cleaning sawdust on the surface of the abrasive belt (10);

the cleaning mechanism (2) comprises a material receiving hopper (201), a first motor (202), a first screw rod (203), a sleeve (204), a moving plate (205), a push rod (206), a brush (207), a fixing block (208), a connecting plate (209) and a magnetic ring (210), the material receiving hopper (201) is fixedly connected with the outer surface of the rack (1), the first motor (202) is fixedly connected with the outer surface of one side of the material receiving hopper (201), the output end of the first motor (202) penetrates through the outer surface of the material receiving hopper (201) and is fixedly connected with one end of the first screw rod (203), the other end of the first screw rod (203) is inserted into the sleeve (204), the first screw rod (203) is in threaded connection with the inner wall of the sleeve (204), one end, far away from the first screw rod (203), of the sleeve (204) is fixedly connected with the outer surface of the moving plate (205), one end of the push rod (206) is fixedly connected with the outer surface of the moving plate (205), the upper surface of the push rod (206) is fixedly connected with a plurality of brushes (207), the inner surfaces of two opposite sides of the material receiving hopper (201) are symmetrically and fixedly connected with two fixed blocks (208), the outer surfaces of the two fixed blocks (208) are rotatably connected with a connecting plate (209), one end, far away from the fixed blocks (208), of the connecting plate (209) is rotatably connected with the outer surface of the push rod (206), and the outer surface of the moving plate (205) is fixedly connected with a magnetic ring (210).

2. The belt sander for wood working of claim 1, wherein: the upper surface that C shape kept off frame (11) is equipped with moving mechanism (3), moving mechanism (3) are including backup pad (301), second screw rod (302), second motor (303) and remove frame (304), two backup pad (301) of the upper surface symmetry fixedly connected with of C shape fender frame (11), two rotate between backup pad (301) and be connected with second screw rod (302), the outer fixed surface of second motor (303) and one of them backup pad (301) is connected, and the output of second motor (303) and the one end fixed connection of second screw rod (302), the lower surface and the second screw rod (302) threaded connection of removing frame (304).

3. The belt sander for wood working of claim 2, wherein: the outer surface of the moving frame (304) is provided with a pressing mechanism (4), the pressing mechanism (4) comprises a third screw (401), a third motor (402), a pressing plate (403), a guide rod (404), a top spring (405), a C-shaped plate (406), a pressure sensor (407) and a clamping assembly (5), the upper surface of the moving frame (304) is fixedly connected with the third motor (402), the output end of the third motor (402) penetrates through the top end of the moving frame (304) and is fixedly connected with one end of the third screw (401), the other end of the third screw (401) penetrates through the upper surface of the pressing plate (403) and is in threaded connection with the upper surface, the top end of the guide rod (404) penetrates through the upper surface of the pressing plate (403) and is in sliding connection with the upper surface, the bottom end of the guide rod (404) is fixedly connected with the C-shaped plate (406), the upper surface of the C-shaped plate (406) is fixedly connected with the pressure sensor (407), the top spring (405) is sleeved on the guide rod (404), and the top spring (405) is arranged between the pressing plate (403) and the pressure sensor (407).

4. The belt sander for wood working of claim 3, wherein: the clamping assembly (5) comprises a double-threaded screw (501), two clamping plates (502) and a rocking wheel (503), the double-threaded screw (501) is connected with the inner wall of the C-shaped plate (406) in a rotating mode, the double-threaded screw (501) penetrates through the outer surfaces of the two clamping plates (502) and is connected with the outer surfaces of the two clamping plates in a threaded mode, and the rocking wheel (503) is fixedly connected with one end face of the double-threaded screw (501).

5. The belt sander for wood working of claim 1, wherein: a balance mechanism (6) is arranged between the two transverse plates (8), the balance mechanism (6) comprises a fixed plate (601), a belt (602), rollers (603), a fixed column (604), a top bead (605) and a fourth motor (606), four fixed plates (601) are fixedly connected between the two transverse plates (8) in pairwise symmetry, four rollers (603) are rotatably connected between the four fixed plates (601), the fourth motor (606) is fixedly connected with the outer surface of the fixing plate (601), the output end of the fourth motor (606) penetrates through the outer surface of the fixing plate (601) and is fixedly connected with the outer surface of one of the rollers (603), the belt (602) is sleeved on the outer surfaces of the four rollers (603), a plurality of fixing columns (604) are uniformly and fixedly connected to the outer surface of the belt (602), and top beads (605) are arranged on the end faces of the fixing columns (604).

6. The belt sander for wood working of claim 1, wherein: the receiving hopper is characterized in that a receiving mechanism (7) is arranged at the bottom of the receiving hopper (201), the receiving mechanism (7) comprises a communicating pipe (701), an air suction pump (702), a discharge hole (703), a collecting box (704) and a through hole (705), the bottom of the receiving hopper (201) is fixedly connected with the communicating pipe (701), the communicating pipe (701) is communicated with the inside of the receiving hopper (201), the communicating pipe (701) is far away from the air suction pump (702) fixedly connected with the end of the receiving hopper (201), the outer surface of the communicating pipe (701) above the air suction pump (702) is provided with the discharge hole (703), the collecting box (704) is connected with the discharging hole (703) in a sliding mode, and the bottom of the collecting box (704) is uniformly provided with the through holes (705).

7. The belt sander for wood working of claim 5, wherein: the top bead (605) is made of rubber material.