Belt sander for wood processing

Abstract

The invention discloses a belt sander for wood processing, and relates to the technical field of grinding and polishing, the belt sander comprises a rack, the top of the rack is fixedly provided with two side edge fixing plates with symmetrical positions, and a first abrasive belt roller and a second abrasive belt roller are rotatably arranged between the two side edge fixing plates; the surface of the first abrasive belt roller and the surface of the second abrasive belt roller are sleeved with abrasive belt bodies, and a plurality of supporting rollers are rotationally arranged between the two side edge fixing plates. The cleaning mechanism is arranged on the surface of the belt sander for wood processing, when the belt sander is used for polishing wood, wood chip waste adsorbed on the surface of the sanding belt body can be cleaned through a cleaning roller, meanwhile, a circulating air pump and a plurality of air nozzles are aligned with the surface of the cleaning roller to downwards spray high-pressure gas, and the surface of the cleaning roller is cleaned; and therefore, wood chips generated by cleaning the abrasive belt body are collected into the dust collection box below through the high-pressure gas, automatic collection of the wood chips is achieved, and subsequent wood chip cleaning by workers is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding and polishing, and particularly to a sanding machine for wood processing. Background Art

[0002] As a key equipment in the field of wood processing, sanding machines are widely used in processes such as surface grinding of boards, forming and polishing of special-shaped parts, and edge treatment. Traditional sanding machines mostly adopt a structure where a single motor drives a sanding belt to wind around a driving wheel and a driven wheel, and the grinding pressure is provided by a contact wheel or a pressing block.

[0003] However, in the actual use of the existing sanding machines for wood processing in the prior art, the board is usually placed on the sanding belt, and then the rotating and moving sanding belt is used to grind the board. Since the wood fibers on the surface of the board will be ground into fine particles when being ground by the sanding belt, a large amount of powdery wood chips will adhere to the sanding belt, and the granular wood chips are difficult to clean on the surface of the sanding belt, resulting in a reduction in the friction effect of the sanding belt, thereby affecting the grinding quality of the sanding belt on the wood. Therefore, we have designed a sanding machine for wood processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a sanding machine for wood processing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A sanding machine for wood processing, including a frame. Two symmetrically arranged side fixing plates are fixedly provided at the top of the frame. A first sanding belt roller and a second sanding belt roller are rotatably arranged between the two side fixing plates. A sanding belt body is sleeved on the surfaces of the first sanding belt roller and the second sanding belt roller. A plurality of support rollers are rotatably arranged between the two side fixing plates. A cleaning mechanism is arranged at the right end of the side fixing plate, and the cleaning mechanism is used for cleaning the waste chips adsorbed on the surface of the sanding belt body. The cleaning mechanism includes an extended frame fixedly connected to the surfaces of the two side fixing plates. A cleaning roller is rotatably connected to the inner surface of the extended frame. A wind shield is fixedly provided on the upper surface of the extended frame. A shunt air pipe is fixedly embedded in the surface of the wind shield. A plurality of jet nozzles are fixedly installed on the lower surface of the shunt air pipe. A dust collection box is fixedly connected to the lower surface of the extended frame, and a circulating air pump is fixedly connected to the side of the extended frame.

[0006] Preferably, an air suction duct is fixedly connected to the input end of the circulating air pump. The end of the air suction duct far from the circulating air pump extends into the interior of the dust collection box. An exhaust duct is fixedly connected to the output end of the circulating air pump. The end of the exhaust duct far from the circulating air pump is fixedly connected to the input end of the shunt air pipe. The circulating air pump is used to form an air circulation flow between the dust collection box and the interior of the wind shield.

[0007] Preferably, a dust-proof filter screen is fixedly connected to the inner wall of the dust collection box. The position of the dust-proof filter screen corresponds to the air inlet port of the air extraction duct. The position of the dust collection box corresponds to the cleaning roller, and the dust collection box is located directly below the cleaning roller. A dust cleaning port is formed in the side surface of the dust collection box, and a dust cleaning port baffle is rotatably connected to the side surface of the dust collection box. The position of the dust cleaning port baffle corresponds to the dust cleaning port.

[0008] Preferably, the cleaning roller is located at the right end of the sand belt body, and the cleaning roller is lapped on the surface of the sand belt body. A plurality of strip-shaped grooves are formed in the surface of the cleaning roller. The shunt air pipe is located directly above the cleaning roller. The air jet port of the air jet nozzle corresponds to the position of the cleaning roller.

[0009] Preferably, one end of the second sand belt roller extends to the outside of the side fixing plate and is fixedly connected with a first linkage gear. One end of the cleaning roller extends to the outside of the extension frame and is fixedly connected with a second linkage gear. The first linkage gear meshes with the second linkage gear.

[0010] Preferably, a mounting frame is fixedly connected to the upper surface of the side fixing plate. A feeding limiting assembly is arranged on the surface of the mounting frame. The feeding limiting assembly includes a first electric telescopic rod fixedly installed on the upper surface of the mounting frame. The telescopic end of the first electric telescopic rod extends below the mounting frame and is fixedly provided with a limiting frame. Two feeding pressure rollers are rotatably connected to the inside of the limiting frame. A driving box is fixedly arranged on the back surface of the limiting frame. A first driving motor for driving the two feeding pressure rollers to rotate is fixedly arranged on the surface of the driving box.

[0011] Preferably, one end of each of the two feeding pressure rollers extends into the driving box, and a driving synchronous wheel and a driven synchronous wheel are respectively fixedly connected to the ends of the two feeding pressure rollers. A transmission belt is installed between the driving synchronous wheel and the driven synchronous wheel. The output shaft of the first driving motor extends into the driving box and is fixedly connected to the surface of the driving synchronous wheel.

[0012] Preferably, two limiting slide bars are fixedly connected to the upper surface of the limiting frame. Limiting through holes matching the limiting slide bars are formed in the surface of the mounting frame. The limiting slide bars are slidably connected to the surface of the mounting frame through the limiting through holes. A support spring is sleeved on the surface of the limiting slide bars. The bottom end of the support spring is fixedly connected to the upper surface of the limiting frame, and the top end of the support spring is fixedly connected to the lower surface of the mounting frame.

[0013] Preferably, two second electric telescopic rods are fixedly installed on the surface of the mounting frame, and a T-shaped limiting plate is fixedly connected to the surface of the mounting frame. A touch switch is fixedly connected to the surface of the T-shaped limiting plate, and two circular through holes are formed in the surface of the T-shaped limiting plate. The telescopic ends of the two second electric telescopic rods are fixedly connected to a driving plate. Two movable push rods are fixedly connected to the surface of the driving plate. The movable push rods are slidably connected to the surface of the T-shaped limiting plate through the circular through holes, and a reset push plate is fixedly connected to one end of the two movable push rods away from the driving plate. The position of the reset push plate corresponds to the wood on the surface of the abrasive belt body.

[0014] Preferably, a motor mounting plate is fixedly arranged on the surface of the machine frame. A second driving motor is fixedly arranged on the surface of the motor mounting plate. One end of the first abrasive belt roller extends to the outside of the side fixing plate and is fixedly connected to a second synchronous pulley. The output shaft of the second driving motor is fixedly connected to a first synchronous pulley. A driving belt is installed between the first synchronous pulley and the second synchronous pulley. The second driving motor drives the first abrasive belt roller to rotate through the first synchronous pulley, the second synchronous pulley and the driving belt.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1). For this kind of abrasive belt machine for wood processing, by arranging a cleaning mechanism on the surface of the abrasive belt machine for wood processing, when using the abrasive belt machine to polish and process wood, the second abrasive belt roller can be used to drive the first linkage gear to rotate, and then drive the second linkage gear and the cleaning roller to rotate. The high-speed rotating cleaning roller is used to clean the wood chip waste adsorbed on the surface of the abrasive belt body. At the same time, the circulating air pump is used to convey air into the shunt air pipe, and a plurality of air nozzles on the surface of the shunt air pipe are used to spray high-pressure gas downward against the surface of the cleaning roller, so as to use the high-pressure gas to concentrate the wood chips generated by cleaning the abrasive belt body into the dust collection box below, so as to realize the automatic collection of wood chips and facilitate the subsequent cleaning of wood chips by the staff.

[0016] (2). For this kind of abrasive belt machine for wood processing, by arranging a feeding limiting component on the surface of the abrasive belt machine, when polishing and processing wood, the first electric telescopic rod can be used to drive the limiting frame to move towards the wood, and then the feeding pressure roller on the surface of the limiting frame can be used to press and limit the top of the wood, so that the bottom surface of the wood is closely attached to the surface of the abrasive belt body. This can not only maintain the stability of the wood during processing, but also enable the surface of the wood to be fully polished, which is beneficial to improving the polishing quality. The first driving motor can be used to drive the two feeding pressure rollers to rotate in the same direction, so as to use the feeding pressure rollers to move and convey the wood, which is convenient for polishing wood of different lengths.

[0017] (3) This type of sanding machine for wood processing is equipped with a second electric telescopic rod and a T-shaped limiting plate on the surface of the mounting frame. When the wood is moved to the right end of the sanding belt body by the feeding pressure roller, the T-shaped limiting plate can be used to limit and block the wood. At the same time, when the wood touches the touch switch on the surface of the T-shaped limiting plate, the second electric telescopic rod is activated by the touch switch. Then, the second electric telescopic rod drives the driving plate and the movable push rod to move to the left, thereby driving the reset push plate to push the wood for reset movement, enabling the wood to automatically return to directly below the feeding pressure roller. As a result, the wood can be sanded repeatedly multiple times, achieving the purpose of automated operation and saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view structural schematic diagram of the present invention; Figure 2 is a side view structural schematic diagram of the present invention; Figure 3 is a partial rear view structural schematic diagram of the present invention; Figure 4 is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 5 is a partial front cross-sectional structural schematic diagram of the present invention; Figure 6 is Figure 2 an enlarged structural schematic diagram of part A in Figure 7 is Figure 3 an enlarged structural schematic diagram of part B in Figure 8 is a partial top view structural schematic diagram of the feeding limiting component of the present invention; In the figure: 1, frame; 2, side fixing plate; 3, first sanding belt roller; 4, second sanding belt roller; 5, sanding belt body; 6, cleaning mechanism; 7, mounting frame; 8, feeding limiting component; 9, second driving motor; 10, second synchronous pulley; 11, first synchronous pulley; 12, driving belt; 13, supporting roller; 601, extending frame; 602, cleaning roller; 603, wind shield; 604, shunt air pipe; 605, air jet nozzle; 606, dust collection box; 607, circulating air pump; 608, air extraction conduit; 609, exhaust conduit; 610, dust-proof filter screen; 611, dust cleaning port baffle; 612, strip-shaped groove; 613, first linkage gear; 614, second linkage gear; 801, first electric telescopic rod; 802, limiting frame; 803, feeding pressure roller; 804, driving box; 805, first driving motor; 806, limiting slide bar; 807, supporting spring; 808, second electric telescopic rod; 809, T-shaped limiting plate; 810, touch switch; 811, driving plate; 812, movable push rod; 813, reset push plate. Specific Embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a sanding machine for wood processing, including a frame 1, two symmetrically arranged side fixing plates 2 are fixedly provided at the top of the frame 1, a first sanding roll 3 and a second sanding roll 4 are rotatably arranged between the two side fixing plates 2, and a sanding belt body 5 is sleeved on the surfaces of the first sanding roll 3 and the second sanding roll 4.

[0021] Please refer to Figure 2 , a motor mounting plate is fixedly provided on the surface of the frame 1, a second driving motor 9 is fixedly provided on the surface of the motor mounting plate, one end of the first sanding roll 3 extends to the outside of the side fixing plate 2 and is fixedly connected with a second synchronous wheel 10, the output shaft of the second driving motor 9 is fixedly connected with a first synchronous wheel 11, a driving belt 12 is installed between the first synchronous wheel 11 and the second synchronous wheel 10, and the second driving motor 9 drives the first sanding roll 3 to rotate through the first synchronous wheel 11, the second synchronous wheel 10 and the driving belt 12. A plurality of support rolls 13 are rotatably arranged between the two side fixing plates 2, a cleaning mechanism 6 is arranged at the right end of the side fixing plate 2, and the cleaning mechanism 6 is used for cleaning the waste chips adsorbed on the surface of the sanding belt body 5. By arranging the support rolls 13, the bottom of the sanding belt body 5 can be supported and limited by the support rolls 13, so as to support the bottom of the wood, and make the sanding belt closely adhere to the surface of the wood during the processing.

[0022] Please refer to Figure 1 and Figure 3 , an installation frame 7 is fixedly connected to the upper surface of the side fixing plate 2, a feeding limiting component 8 is arranged on the surface of the installation frame 7, and the feeding limiting component 8 includes a first electric telescopic rod 801 fixedly installed on the upper surface of the installation frame 7. The telescopic end of the first electric telescopic rod 801 extends below the installation frame 7 and is fixedly provided with a limiting frame 802. Two feeding pressure rolls 803 are rotatably connected inside the limiting frame 802, a driving box 804 is fixedly provided on the back of the limiting frame 802, and a first driving motor 805 for driving the two feeding pressure rolls 803 to rotate is fixedly provided on the surface of the driving box 804.

[0023] One end of each of the two feeding pressure rollers 803 extends into the driving box 804, and a driving synchronous pulley and a driven synchronous pulley are respectively fixedly connected to the end portions of the two feeding pressure rollers 803. A transmission belt is installed between the driving synchronous pulley and the driven synchronous pulley. The output shaft of the first driving motor 805 extends into the driving box 804 and is fixedly connected to the surface of the driving synchronous pulley.

[0024] It should be noted that by providing the feeding limit assembly 8 on the surface of the belt sander, when processing wood, the first electric telescopic rod 801 can be used to drive the limit frame 802 to move towards the top of the wood, and then the two feeding pressure rollers 803 on the surface of the limit frame 802 can be used to press and limit the top of the wood, so that the bottom surface of the wood is closely attached to the sand belt body 5. This can not only maintain the stability of the wood during processing, but also enable the surface of the wood to be fully polished, which is beneficial to improving the polishing quality. At the same time, the first driving motor 805 can be used to drive the driving synchronous pulley and the driven synchronous pulley to rotate, and then drive the two feeding pressure rollers 803 to rotate in the same direction. Then, the feeding pressure rollers 803 can be used to move and convey the wood, which is convenient for polishing wood of different lengths.

[0025] Please refer to Figure 3 and Figure 4 As shown in the figure, two limit sliding rods 806 are fixedly connected to the upper surface of the limit frame 802. Limit through holes matching the limit sliding rods 806 are provided on the surface of the mounting frame 7. The limit sliding rods 806 are slidably connected to the surface of the mounting frame 7 through the limit through holes. A support spring 807 is sleeved on the surface of the limit sliding rod 806. The bottom end of the support spring 807 is fixedly connected to the upper surface of the limit frame 802, and the top end of the support spring 807 is fixedly connected to the lower surface of the mounting frame 7.

[0026] Please refer to Figure 8 As shown in the figure, two second electric telescopic rods 808 are fixedly installed on the surface of the mounting frame 7, and a T-shaped limit plate 809 is fixedly connected to the surface of the mounting frame 7. A touch switch 810 is fixedly connected to the surface of the T-shaped limit plate 809, and two circular through holes are provided on the surface of the T-shaped limit plate 809. The telescopic ends of the two second electric telescopic rods 808 are fixedly connected to a driving plate 811. Two movable push rods 812 are fixedly connected to the surface of the driving plate 811. The movable push rods 812 are slidably connected to the surface of the T-shaped limit plate 809 through the circular through holes, and a reset push plate 813 is fixedly connected to one end of the two movable push rods 812 away from the driving plate 811. The position of the reset push plate 813 corresponds to the wood on the surface of the sand belt body 5.

[0027] It should be noted that a control panel is provided on the front surface of the side fixing plate 2. The control panel is electrically connected to the touch switch 810, the first driving motor 805, the second driving motor 9, the first electric telescopic rod 801, the second electric telescopic rod 808, and the circulating air pump 607.

[0028] It should be noted that by providing a second electric telescopic rod 808 and a T-shaped limit plate 809 on the surface of the mounting frame 7, when the wood is moved to the right end of the sand belt body 5 by the feeding pressure roller 803, the T-shaped limit plate 809 can be used to limit and block the wood. At the same time, the wood touches the touch switch 810 on the surface of the T-shaped limit plate 809, and the touch switch 810 is used to start the second electric telescopic rod 808. Then, the second electric telescopic rod 808 drives the driving plate 811 and the movable push rod 812 to move to the left, thereby driving the reset push plate 813 to push the wood to move back, so that the wood automatically returns to directly below the feeding pressure roller 803, so that the wood can be polished repeatedly for many times, achieving the purpose of automatic operation and saving labor.

[0029] Please refer to Figure 4 and Figure 7 , the cleaning mechanism 6 includes an extension frame 601 fixedly connected to the surfaces of two side fixing plates 2. A cleaning roller 602 is rotatably connected to the inner surface of the extension frame 601. One end of the second sand belt roller 4 extends to the outside of the side fixing plate 2 and is fixedly connected with a first linkage gear 613. One end of the cleaning roller 602 extends to the outside of the extension frame 601 and is fixedly connected with a second linkage gear 614. The first linkage gear 613 meshes with the second linkage gear 614.

[0030] It should be noted that the diameter of the first linkage gear 613 is much larger than that of the second linkage gear 614. Using the principle that a large gear drives a small gear to generate acceleration, the cleaning roller 602 can be driven to rotate at a high speed while the sand belt body 5 rotates, thus facilitating the cleaning of the sand belt body 5.

[0031] A wind shield 603 is fixedly arranged on the upper surface of the extension frame 601. A shunt air pipe 604 is fixedly embedded on the surface of the wind shield 603. A plurality of air nozzles 605 are fixedly installed on the lower surface of the shunt air pipe 604. A dust collection box 606 is fixedly connected to the lower surface of the extension frame 601, and a circulating air pump 607 is fixedly connected to the side surface of the extension frame 601. The position of the dust collection box 606 corresponds to that of the cleaning roller 602, and the dust collection box 606 is located directly below the cleaning roller 602.

[0032] Please refer to Figure 6 and Figure 7, the cleaning roller 602 is located at the right end of the abrasive belt body 5, and the cleaning roller 602 overlaps with the surface of the abrasive belt body 5. A plurality of strip-shaped grooves 612 are formed on the surface of the cleaning roller 602. The shunt air pipe 604 is located directly above the cleaning roller 602, and the air jet ports of the air jet nozzles 605 correspond to the position of the cleaning roller 602. By providing a plurality of strip-shaped grooves 612 on the surface of the cleaning roller 602, the friction between the cleaning roller 602 and the abrasive belt body 5 can be increased, so that the cleaning roller 602 is used to scrape and clean the dust and impurities adsorbed on the surface of the abrasive belt body 5.

[0033] It should be noted that by providing a cleaning mechanism 6 on the surface of the belt sander for wood processing, when using the belt sander to grind wood, the second abrasive belt roller 4 drives the first linkage gear 613 to rotate, and then drives the second linkage gear 614 and the cleaning roller 602 to rotate. The high-speed rotating cleaning roller 602 is used to clean the wood chips and waste adsorbed on the surface of the abrasive belt body 5. At the same time, the circulating air pump 607 is used to convey air into the shunt air pipe 604, and a plurality of air jet nozzles 605 on the surface of the shunt air pipe 604 are used to spray high-pressure gas downward against the surface of the cleaning roller 602, so that the wood chips generated by cleaning the abrasive belt body 5 are concentrated into the dust collection box 606 below, thereby realizing the automatic collection of wood chips and facilitating the subsequent cleaning of wood chips by the staff.

[0034] It should be noted that a dust cleaning port is provided on the side of the dust collection box 606, and a dust cleaning port baffle 611 is rotatably connected to the side of the dust collection box 606. The position of the dust cleaning port baffle 611 corresponds to the dust cleaning port. After the cleaning is completed, the staff can open the dust cleaning port baffle 611 to clean and discharge the wood chips and waste in the dust collection box 606.

[0035] Please refer to Figure 7 , the input end of the circulating air pump 607 is fixedly connected with an air extraction conduit 608. The end of the air extraction conduit 608 away from the circulating air pump 607 extends into the interior of the dust collection box 606. The output end of the circulating air pump 607 is fixedly connected with an exhaust conduit 609. The end of the exhaust conduit 609 away from the circulating air pump 607 is fixedly connected with the input end of the shunt air pipe 604. The circulating air pump 607 is used to form an air circulation flow between the dust collection box 606 and the windshield 603.

[0036] It should be noted that a dust-proof filter screen 610 is fixedly connected to the inner wall of the dust collection box 606. The position of the dust-proof filter screen 610 corresponds to the intake port of the air extraction conduit 608. The dust-proof filter screen 610 can block the wood chips in the dust collection box 606 to prevent the wood chips from entering the circulating air pump 607.

[0037] Working principle: When in use, first place the wood on the surface of the abrasive belt body 5, then start the first electric telescopic rod 801 to drive the limit frame 802 to move downward, drive the two feeding pressure rollers 803 to press and limit the upper surface of the wood, and then use the second drive motor 9 to drive the first synchronous wheel 11 to rotate, thereby driving the second synchronous wheel 10 and the first abrasive belt roller 3 to rotate, so as to drive the abrasive belt body 5 and the second abrasive belt roller 4 to rotate, and use the abrasive belt body 5 to polish the bottom of the wood. Then use the first drive motor 805 to drive the drive synchronous wheel and the driven synchronous wheel to rotate, thereby driving the two feeding pressure rollers 803 to rotate in the same direction, and use the feeding pressure rollers 803 to convey the wood to the right. When the right end of the wood touches the touch switch 810 on the surface of the T-shaped limit plate 809, start the two second electric telescopic rods 808 to drive the drive plate 811 to move, thereby driving the movable push rod 812 and the reset push plate 813 to move to the left, and use the reset push plate 813 to return the wood to below the feeding pressure rollers 803 to realize automatic reset of the wood, and then continue to polish the wood. Then use the feeding pressure rollers 803 to move the wood to realize repeated polishing of the wood and improve the polishing effect of the wood.

[0038] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0039] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those skilled in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A belt sander for wood processing, comprising a frame (1), characterized in that: Two symmetrically positioned side fixing plates (2) are fixedly arranged at the top of the frame (1). A first abrasive belt roller (3) and a second abrasive belt roller (4) are rotatably arranged between the two side fixing plates (2). An abrasive belt body (5) is sleeved on the surfaces of the first abrasive belt roller (3) and the second abrasive belt roller (4). A plurality of support rollers (13) are rotatably arranged between the two side fixing plates (2). A cleaning mechanism (6) is arranged at the right end of the side fixing plate (2). The cleaning mechanism (6) is used for cleaning the waste chips adsorbed on the surface of the abrasive belt body (5). The cleaning mechanism (6) includes an extension frame (601) fixedly connected to the surfaces of the two side fixing plates (2). A cleaning roller (602) is rotatably connected to the inner surface of the extension frame (601). A wind shield (603) is fixedly arranged on the upper surface of the extension frame (601). A shunt air pipe (604) is fixedly embedded on the surface of the wind shield (603). A plurality of jet nozzles (605) are fixedly installed on the lower surface of the shunt air pipe (604). A dust collection box (606) is fixedly connected to the lower surface of the extension frame (601), and a circulating air pump (607) is fixedly connected to the side of the extension frame (601).

2. The abrasive belt machine for wood processing according to claim 1, wherein: An air extraction duct (608) is fixedly connected to the input end of the circulating air pump (607). The end of the air extraction duct (608) far from the circulating air pump (607) extends into the interior of the dust collection box (606). An exhaust duct (609) is fixedly connected to the output end of the circulating air pump (607). The end of the exhaust duct (609) far from the circulating air pump (607) is fixedly connected to the input end of the shunt air pipe (604). The circulating air pump (607) is used to form an air circulation flow between the dust collection box (606) and the interior of the wind shield (603).

3. The belt sander for wood processing according to claim 2, characterized in that: A dust-proof filter screen (610) is fixedly connected to the inner wall of the dust collection box (606). The position of the dust-proof filter screen (610) corresponds to the air intake port of the air extraction duct (608). The position of the dust collection box (606) corresponds to the cleaning roller (602), and the dust collection box (606) is located directly below the cleaning roller (602). A dust cleaning port is formed on the side of the dust collection box (606), and a dust cleaning port baffle (611) is rotatably connected to the side of the dust collection box (606). The position of the dust cleaning port baffle (611) corresponds to the dust cleaning port.

4. The belt sander for wood processing according to claim 3, characterized in that: The cleaning roller (602) is located at the right end of the abrasive belt body (5), and the cleaning roller (602) is in contact with the surface of the abrasive belt body (5). A plurality of strip-shaped grooves (612) are formed on the surface of the cleaning roller (602). The shunt air pipe (604) is located directly above the cleaning roller (602). The jet ports of the jet nozzles (605) correspond to the position of the cleaning roller (602).

5. The abrasive belt machine for wood processing according to claim 1, characterized in that: One end of the second abrasive belt roller (4) extends outside the side fixing plate (2) and is fixedly connected to a first linkage gear (613). One end of the cleaning roller (602) extends outside the extension frame (601) and is fixedly connected to a second linkage gear (614). The first linkage gear (613) meshes with the second linkage gear (614).

6. The belt sander for wood processing according to claim 1, wherein: An installation frame (7) is fixedly connected to the upper surface of the side fixing plate (2). A feeding limiting component (8) is arranged on the surface of the installation frame (7). The feeding limiting component (8) includes a first electric telescopic rod (801) fixedly installed on the upper surface of the installation frame (7). The telescopic end of the first electric telescopic rod (801) extends below the installation frame (7) and is fixedly provided with a limiting frame (802). Two feeding pressure rollers (803) are rotatably connected inside the limiting frame (802). A driving box (804) is fixedly arranged on the back surface of the limiting frame (802). A first driving motor (805) for driving the two feeding pressure rollers (803) to rotate is fixedly arranged on the surface of the driving box (804).

7. The abrasive belt machine for wood processing according to claim 6, characterized in that: One end of each of the two feeding pressure rollers (803) extends into the driving box (804). The end parts of the two feeding pressure rollers (803) are respectively fixedly connected with a driving synchronous pulley and a driven synchronous pulley. A transmission belt is installed between the driving synchronous pulley and the driven synchronous pulley. The output shaft of the first driving motor (805) extends into the driving box (804) and is fixedly connected to the surface of the driving synchronous pulley.

8. The abrasive belt machine for wood processing according to claim 7, characterized in that: Two limiting slide bars (806) are fixedly connected to the upper surface of the limiting frame (802). Limiting through holes matching the limiting slide bars (806) are formed on the surface of the installation frame (7). The limiting slide bars (806) are slidably connected to the surface of the installation frame (7) through the limiting through holes. A support spring (807) is sleeved on the surface of the limiting slide bars (806). The bottom end of the support spring (807) is fixedly connected to the upper surface of the limiting frame (802), and the top end of the support spring (807) is fixedly connected to the lower surface of the installation frame (7).

9. The abrasive belt machine for wood processing according to claim 8, characterized in that: Two second electric telescopic rods (808) are fixedly installed on the surface of the installation frame (7). A T-shaped limiting plate (809) is fixedly connected to the surface of the installation frame (7). A touch switch (810) is fixedly connected to the surface of the T-shaped limiting plate (809). Two circular through holes are formed on the surface of the T-shaped limiting plate (809). The telescopic ends of the two second electric telescopic rods (808) are fixedly connected to a driving plate (811). Two movable push rods (812) are fixedly connected to the surface of the driving plate (811). The movable push rods (812) are slidably connected to the surface of the T-shaped limiting plate (809) through the circular through holes. One end of each of the two movable push rods (812) far away from the driving plate (811) is fixedly connected to a reset push plate (813). The position of the reset push plate (813) corresponds to the wood on the surface of the abrasive belt body (5).

10. A belt sander for wood processing according to claim 1, characterized in that: A motor mounting plate is fixedly arranged on the surface of the frame (1), and a second driving motor (9) is fixedly arranged on the surface of the motor mounting plate. One end of the first abrasive belt roller (3) extends to the outside of the side fixing plate (2) and is fixedly connected with a second synchronous pulley (10). The output shaft of the second driving motor (9) is fixedly connected with a first synchronous pulley (11). A driving belt (12) is installed between the first synchronous pulley (11) and the second synchronous pulley (10). The second driving motor (9) drives the first abrasive belt roller (3) to rotate through the first synchronous pulley (11), the second synchronous pulley (10) and the driving belt (12).

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