CN112720227A

CN112720227A - Burnishing device for wood working

Info

Publication number: CN112720227A
Application number: CN202110007986.5A
Authority: CN
Inventors: 倪兰兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-04-30

Abstract

The invention relates to the technical field of wood processing equipment and discloses a polishing device for wood processing, which comprises a main body, wherein two conveying belts are fixedly arranged at the positions of the bottom surfaces of an inlet and an outlet of the main body, a front pressure cylinder is fixedly arranged at the position, above a right conveying belt, in the main body, a rear pressure cylinder is fixedly arranged at the position, above the left conveying belt, in the main body, and a mounting seat is movably arranged at the position, above the right conveying belt, in the main body. According to the wood polishing machine, the transmission mechanism is arranged, the front pressure cylinder is jacked up when wood enters the equipment, so that the polishing cylinder and the front pressure cylinder are raised to the same height, when the thickness of the wood to be polished is changed, the working height of the polishing cylinder is changed, the wood polishing machine can polish wood with various thicknesses, meanwhile, due to the arrangement of the transmission mechanism, the wood polishing machine does not need to be stopped and adjusted, and therefore the working efficiency of the polishing machine is indirectly improved.

Description

Burnishing device for wood working

Technical Field

The invention relates to the technical field of wood processing equipment, in particular to a polishing device for wood processing.

Background

Wood is an important part of building materials, and is a lignified tissue formed by secondary-grown plants, after primary growth of the plants is finished, a fiber-forming layer in roots and stems starts to move, bast is developed outwards, wood is developed inwards, and when the wood is used in buildings, because a plurality of burrs and flashes are left on the surface of the wood, the subsequent use of the buildings is influenced, and therefore, the surface of the wood needs to be polished.

However, the existing wood polishing machine is limited by the structure of the existing wood polishing machine, only can polish wood with the same thickness when in work, if wood with other thickness is to be polished, the equipment needs to be stopped for adjustment, then the wood with other thickness can be polished, but in this way, the working efficiency is greatly influenced, secondly, the existing wood polishing machine does not have the function of cleaning wood chips and dust due to the limitation of the structure, but the wood polishing machine can generate a large amount of wood chips and dust when in work, the wood chips and the dust can float around, and some wood chips and dust can be sucked into the body by workers, so that the health of the workers is influenced, and furthermore, when the existing wood polishing machine is used, a downward force is only applied to the wood to be polished through a pressure cylinder to achieve the function of fixing the wood, but the wood can be applied by a polishing cylinder or the angle of the workers to place the wood is not right, so that during operation, the wood deflects at a horizontal angle, thereby affecting the sanding effect.

Disclosure of Invention

Aiming at the defects of the existing wood polishing machine in the use process in the background technology, the invention provides the polishing device for wood processing, which has the advantages of no need of adjusting the structure of the polishing device, polishing of wood with various thicknesses, clearing of wood chips and dust and horizontal angle righting, and solves the technical problems in the background technology.

The invention provides the following technical scheme: a polishing device for wood processing comprises a main body, wherein a conveyor belt is fixedly arranged at the bottom surface of an inlet and an outlet of the main body, the number of the conveyor belts is two, a front pressure cylinder is fixedly arranged in the main body and positioned above the right conveyor belt, a rear pressure cylinder is fixedly arranged in the main body at the left upper position of the left side conveyor belt, a mounting seat is movably arranged in the main body at the right upper position of the left side conveyor belt, the inner cavity of the mounting seat is slidably provided with a polishing barrel which is fixedly connected with a rotating shaft of a driving motor, the driving motor is fixedly arranged at one side of the mounting seat, the dust absorption mechanism is fixedly arranged in the mounting seat, the dust collector is characterized in that transmission mechanisms are arranged on two sides of the mounting seat in a sliding mode, the transmission mechanisms and the dust collection mechanisms are fixedly connected with clamping mechanisms, and the clamping mechanisms are fixedly arranged at the positions, below the dust collection mechanisms, inside the main body.

Preferably, the clamping mechanism comprises a main chamber, a piston, a leather cup, an installation rod, a clamping wheel, an auxiliary chamber, a sliding piston, a hose, an airflow hole, an airflow valve, a magnetic part, a magnetic inner wall, a discharge hole, an air inlet hole and an exhaust hole II, the main chamber is fixedly installed in the main body, the piston is slidably installed on one side of the inner cavity of the main chamber, the leather cup is slidably installed on the other side of the inner cavity of the main chamber, the leather cup is fixedly sleeved at one end of the installation rod, the other end of the installation rod penetrates through one side of the main chamber, the clamping wheel is fixedly installed at the other end of the installation rod, the auxiliary chamber is fixedly installed on the upper side of the main chamber, the sliding piston is slidably installed in the auxiliary chamber, an air inlet pipe of the sliding piston penetrates through the upper side of the auxiliary chamber, the air inlet pipe is communicated with one end of, the one end and the intake pipe intercommunication in air current hole, the position fixed mounting that sliding piston one side is located the air current hole other end has the air current valve, the inside position slidable mounting that is located the air current hole of sliding piston has the magnetic part, the quantity of magnetic part is two, the position fixed mounting that the bottom surface of sub-cavity is located one side magnetic part has the magnetism inner wall, the inside downside position that is located the air current valve of sliding piston has seted up the earial drainage hole, the inlet port has been seted up to the bottom surface of sub-cavity, the quantity of inlet port is two, exhaust hole II has been seted up to the bottom surface of main cavity, exhaust hole II communicates the main cavity with the exterior space of main part.

Preferably, the transmission mechanism is fixedly installed inside the main body and consists of a first rack, a first gear, a first connecting rod, a second gear, a second rack, a first transmission chain, a third gear and a third rack, the first racks are fixedly arranged on two sides of the mounting seat and meshed with the first gear, the first gear is fixedly connected with a second gear through a first connecting rod, the second gear is meshed with a second rack, the second rack is fixedly arranged on a sliding rod of the front pressure cylinder, the first connecting rod is fixedly sleeved with a driving wheel of a first transmission chain, the driven wheel of the first transmission chain is fixedly arranged on the third gear, the driven wheel and the third gear rotate synchronously, the third gear is meshed with a third rack, and one end of the third rack is fixedly connected with one side of the piston.

Preferably, the dust collection mechanism is fixedly installed inside the installation seat, the dust collection mechanism is composed of a dust collection chamber, two dust collection chambers, an air exhaust fan, a second transmission chain, a second connecting rod, a second bevel gear, a first bevel gear, an exhaust hole I and a filter screen, the dust collection chamber is formed inside the installation seat and is communicated with the dust collection chambers, the number of the dust collection chambers is two, the air exhaust fan is fixedly installed on the inner wall of the middle of the two dust collection chambers, a rotating shaft of the air exhaust fan is fixedly connected with a driven wheel of the second transmission chain, a driving wheel of the second transmission chain is fixedly connected with one end of the second connecting rod, the other end of the second connecting rod is fixedly connected with the second bevel gear, the second bevel gear is meshed with the first bevel gear, the first bevel gear is fixedly sleeved on the rotating shaft of the driving motor, and the dust collection chambers are communicated with the exhaust hole I, exhaust hole I sets up in the inside of mount pad, exhaust hole I communicates with the other end of hose, I inside fixed mounting in exhaust hole has the filter screen.

Preferably, the magnetic member and the magnetic inner wall repel each other.

Preferably, the hose is of a flexible material.

Preferably, the first gear and the second gear rotate synchronously, and the number of teeth of the third gear is one fifth more than that of the first gear.

Preferably, when the first gear and the second gear rotate synchronously, the first rack and the second rack are driven to move for the same distance.

Preferably, the vertical height of the grinding cylinder is lower than the vertical height of the front pressure cylinder by a millimeter.

The invention has the following beneficial effects:

1. according to the wood polishing machine, the transmission mechanism is arranged, the front pressure cylinder is jacked up when wood enters the equipment, so that the polishing cylinder and the front pressure cylinder are raised to the same height, when the thickness of the wood to be polished is changed, the working height of the polishing cylinder is changed, the wood polishing machine can polish wood with various thicknesses, meanwhile, due to the arrangement of the transmission mechanism, the wood polishing machine does not need to be stopped and adjusted, and therefore the working efficiency of the polishing machine is indirectly improved.

2. According to the invention, through the arrangement of the dust collection mechanism, sawdust and dust generated by polishing wood by the polishing drum are limited in the inner cavity of the mounting seat through the mounting seat, and meanwhile, the driving motor is utilized to drive the suction fan to work, so that the sawdust and the dust are collected, and are prevented from being sucked into the body by workers, and the harm to the health of the workers is avoided.

3. According to the wood polishing machine, the air exhausted by the dust absorption mechanism is utilized through the arrangement of the clamping mechanism, the clamping wheel is pushed by the air to clamp and straighten the horizontal angle of the wood to be polished, so that the polishing effect is prevented from being influenced, and after the wood is polished, the clamping wheel completes resetting through the action of the transmission mechanism and the clamping mechanism, so that the subsequent wood can be polished smoothly.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of a dust suction mechanism according to the present invention;

FIG. 5 is a schematic view of a pressure tube prior to construction of the present invention;

FIG. 6 is a schematic view of the sliding piston in an initial state according to the present invention;

fig. 7 is a schematic view of the sliding piston of the present invention.

In the figure: 1. a main body; 2. a conveyor belt; 3. a front pressure barrel; 4. a rear pressure cylinder; 5. a mounting seat; 6. polishing the barrel; 7. a drive motor; 8. a clamping mechanism; 80. a main chamber; 800. a piston; 801. a leather cup; 802. mounting a rod; 803. a pinch wheel; 81. a secondary chamber; 810. a sliding piston; 811. a hose; 812. an airflow aperture; 813. an air flow valve; 814. a magnetic member; 815. a magnetic inner wall; 816. a vent hole; 817. an air inlet; 818. an exhaust hole II; 9. a transmission mechanism; 90. a first rack; 91. a first gear; 92. a first connecting rod; 93. a second gear; 94. a second rack; 95. a first drive chain; 96. a third gear; 97. a third rack; 10. a dust suction mechanism; 100. a dust suction chamber; 101. a dust collection chamber; 102. an air extracting fan; 103. a second drive chain; 104. a second connecting rod; 105. a second bevel gear; 106. a first bevel gear; 107. an exhaust hole I; 108. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, a polishing device for wood processing comprises a main body 1, wherein two conveyor belts 2 are fixedly arranged at the bottom surface of an inlet and an outlet of the main body 1, a front pressure cylinder 3 is fixedly arranged at the position above a right conveyor belt 2 in the main body 1, a rear pressure cylinder 4 is fixedly arranged at the position above the left conveyor belt 2 in the main body 1, a mounting seat 5 is movably arranged at the position above the right conveyor belt 2 in the main body 1, a polishing cylinder 6 is slidably arranged in the inner cavity of the mounting seat 5, the polishing cylinder 6 is fixedly connected with a rotating shaft of a driving motor 7, the driving motor 7 is fixedly arranged at one side of the mounting seat 5, when the polishing device works, wood to be polished is placed on the right conveyor belt 2, the wood jacks up the front pressure cylinder 3, then the wood moves to the left conveyor belt 2 through the right conveyor belt 2, and the driving motor 7 drives the polishing cylinder 6 to rotate and polish the wood, the outlet position of main part 1 is carried to the timber that polishes by left side conveyer belt 2 to press through back pressure cylinder 4, avoid timber to break away from the speed of equipment too fast, polish the produced dust of timber simultaneously and the saw-dust is restricted at the inner chamber of mount pad 5.

Wherein, the clamping mechanism 8 is composed of a main chamber 80, a piston 800, a leather cup 801, an installation rod 802, a clamping wheel 803, an auxiliary chamber 81, a sliding piston 810, a hose 811, an air flow hole 812, an air flow valve 813, a magnetic piece 814, a magnetic inner wall 815, a discharge hole 816, an air inlet 817 and an exhaust hole II 818, the main chamber 80 is fixedly installed in the main body 1, the piston 800 is slidably installed on one side of the inner cavity of the main chamber 80, the leather cup 801 is slidably installed on the other side of the inner cavity of the main chamber 80, the leather cup 801 is fixedly sleeved on one end of the installation rod 802, the other end of the installation rod 802 penetrates through one side of the main chamber 80, the clamping wheel 803 is fixedly installed on the other end of the installation rod 802, the auxiliary chamber 81 is fixedly installed on the upper side of the main chamber 80, the sliding piston 810 is slidably installed on the inner cavity of the auxiliary chamber 81, the hose 811 is made of flexible material, the inside of the sliding piston 810 is provided with an airflow hole 812, one end of the airflow hole 812 is communicated with an air inlet pipe, one side of the sliding piston 810 is fixedly provided with an airflow valve 813 at the position of the other end of the airflow hole 812, the inside of the sliding piston 810 is slidably provided with a magnetic member 814 at the position of the airflow hole 812, the number of the magnetic members 814 is two, the bottom surface of the sub-chamber 81 is fixedly provided with a magnetic inner wall 815 at the position of the magnetic member 814 at one side, the magnetic member 814 and the magnetic inner wall 815 repel each other, the communication between the airflow hole 812 and the sub-chamber 81 is controlled by the movement of the magnetic member 814, the inside of the sliding piston 810 is provided with a vent hole 816 at the lower side of the airflow valve 813, the bottom surface of the sub-chamber 81 is provided with an air inlet hole 817, the number of the air inlet holes 817 is two, after the air in the hose 811 enters the air inlet pipe of the sliding piston 810, the air will continue to flow through the air inlet hole 817 and the main chamber 80, and finally is discharged to the external environment, after the wood to be polished enters the device, the piston 800 will move through the transmission mechanism 9, then the piston 800 blocks the air discharged from the air inlet hole 817 from flowing to the external environment, so that the air pushes and pushes the leather cup 801 to move, the leather cup 801 drives the mounting rod 802 and the clamping wheel 803 to move, the clamping wheel 803 clamps the wood, thereby realizing the function of clamping the wood and righting the horizontal angle of the wood, after the wood is clamped, the leather cup 801 stops moving, along with the air inlet pipe of the sliding piston 810, the air pressure in the main chamber 80 gradually rises, so that the air flow valve 813 on one side of the sliding piston 810 is opened, the cavity on the side of the auxiliary chamber 81 is filled with the air, and the air pushes the sliding piston, when the air inlet pipe of the sliding piston 810 is communicated with the air inlet hole 817 on the other side, the opened air flow valve 813 is closed, air is exhausted to the external environment through the air outlet hole II 818, after wood polishing is finished, the transmission mechanism 9 drives the piston 800 to do return motion, the piston 800 drives the leather cup 801 to move in the same direction through the internal air pressure of the main chamber 80, the clamping wheel 803 is reset, when the piston 800 moves to the air inlet hole 817 where air is being conveyed, the air inlet hole 817 is blocked, the air in the air inlet pipe of the sliding piston 810 is opened through the air flow valve 813 on one side of the sliding piston 810, the sliding piston 810 further makes return motion, and the sliding piston returns to the initial position, and therefore subsequent wood polishing operation can be smoothly performed.

Wherein, the transmission mechanism 9 is fixedly installed inside the main body 1, the transmission mechanism 9 is composed of a first rack 90, a first gear 91, a first connecting rod 92, a second gear 93, a second rack 94, a first transmission chain 95, a third gear 96 and a third rack 97, the first rack 90 is fixedly installed at two sides of the installation seat 5, the first rack 90 is engaged with the first gear 91, the first gear 91 is fixedly connected with the second gear 93 through the first connecting rod 92, the first gear 91 and the second gear 93 synchronously rotate, the second gear 93 is engaged with the second rack 94, the second rack 94 is fixedly installed on the sliding rod of the front pressure cylinder 3, when the first gear 91 and the second gear 93 synchronously rotate, the first rack 90 and the second rack 94 are driven to move for the same distance, so that the front pressure cylinder 3 and the grinding cylinder 6 move for the same distance, and the device can polish wood with various thicknesses, a driving wheel of a first transmission chain 95 is fixedly sleeved on the first connecting rod 92, the driven wheel of the first transmission chain 95 is fixedly installed on the third gear 96, the driven wheel and the third gear 96 rotate synchronously, the number of gear teeth of the third gear 96 is one fifth larger than that of the first gear 91, the third gear 96 is meshed with the third rack 97, one end of the third rack 97 is fixedly connected with one side of the piston 800, when the first gear 91 drives the third gear 96 to rotate through the first transmission chain 95, the third gear 96 can drive the third rack 97 to travel a farther distance, the piston 800 can smoothly block gas discharged from the gas inlet 817 from flowing into the external environment, and therefore the clamping mechanism 8 can smoothly realize the functions of wood clamping and horizontal angle righting.

Wherein, the dust suction mechanism 10 is fixedly installed inside the mounting base 5, the dust suction mechanism 10 is composed of a dust suction chamber 100, a dust collection chamber 101, an air extracting fan 102, two transmission chains 103, a second connecting rod 104, a second bevel gear 105, a first bevel gear 106, an exhaust hole I107 and a filter screen 108, the dust suction chamber 100 is opened inside the mounting base 5, the dust suction chamber 100 is communicated with the dust collection chamber 101, the number of the dust collection chambers 101 is two, the air extracting fan 102 is fixedly installed on the middle inner wall of the two dust collection chambers 101, the rotating shaft of the air extracting fan 102 is fixedly connected with the driven wheel of the second transmission chain 103, the driving wheel of the second transmission chain 103 is fixedly connected with one end of the second connecting rod 104, the other end of the second connecting rod 104 is fixedly connected with the second bevel gear 105, the second bevel gear 105 is engaged with the first bevel gear 106, the first bevel gear 106 is fixedly connected on the rotating shaft of the driving motor 7, exhaust hole I107 is seted up in the inside of mount pad 5, exhaust hole I107 and hose 811's the other end intercommunication, the inside fixed mounting of exhaust hole I107 has filter screen 108, drive second drive chain 103 motion through driving motor 7, and then make the work of air extraction fan 102, the saw-dust of air extraction fan 102 in with the mount pad 5 inner chamber, the dust is pumped together to dust collection chamber 101 together with the air, thereby reach the function of clearance saw-dust and dust, avoid dust diffusion harm staff's healthy, afterwards, the air passes through exhaust hole I107 and gets into hose 811, and the saw-dust is blockked by filter screen 108 with the dust, this equipment is applicable to ligneous secondary polishing.

The use method (working principle) of the invention is as follows:

firstly, the conveyor belt 2 and the driving motor 7 work, the driving motor 7 drives the grinding cylinder 6 to rotate and drives the second transmission chain 103 to move, so that the air extracting fan 102 starts to work, then a worker puts wood to be polished on the right conveyor belt 2, the wood jacks up the front pressure cylinder 3, so that the second rack 94 rises, the second gear 93 rotates along with the second transmission chain, the first gear 91 synchronously rotates, the first gear 91 drives the first rack 90 to move upwards, so that the mounting seat 5 moves upwards and drives the grinding cylinder 6 to move upwards, meanwhile, the first gear 91 rotates and drives the first transmission chain 95 to move, so that the third gear 96 rotates and drives the third rack 97 to move, the third rack 97 pushes the piston 800 to move in the main chamber 80, the piston 800 blocks the exhaust hole II 818 in the moving process, so that air entering the main chamber through the air inlet pipe of the sliding piston 810 pushes the leather cup 801 to move, the leather cup 801 drives the mounting rod 802 and the clamping wheel 803 to move, the clamping wheel 803 clamps the wood, meanwhile, the wood continues to move forwards through the movement of the conveyor belt 2, when the clamping wheel 803 clamps the wood, the leather cup 801 stops moving, the air pressure in the main chamber 80 gradually rises along with the air inlet of the air inlet pipe of the sliding piston 810, the air flow valve 813 on one side of the sliding piston 810 is opened, the cavity on the side of the auxiliary chamber 81 is filled with air, the air pushes the sliding piston 810 to move in the other direction, when the air inlet pipe of the sliding piston 810 is communicated with the air inlet 817 on the other side, the opened air flow valve 813 is closed, the air is exhausted to the external environment through the air outlet hole II 818, when the grinding cylinder 6 polishes the wood, the generated wood chips and dust can be remained in the inner cavity of the mounting seat 5 and pumped into the dust collection cavity 101 by the air suction fan 102, and then the chips and dust can be, the air extracted by the air extracting fan 102 enters the hose 811 through the air exhaust hole i 107 and finally enters the air inlet pipe of the sliding piston 810, after the wood is polished, the mounting seat 5 moves downwards to drive the first rack 90 to move downwards, so that the first gear 91, the second gear 93, the first transmission chain 95 and the third gear 96 rotate, the second rack 94 moves downwards, the front pressure cylinder 3 resets, the third rack 97 drives the piston 800 to perform return motion, the piston 800 drives the leather cup 801 to perform the same-direction motion through the internal air pressure of the main chamber 80, so that the clamping wheel 803 resets, when the piston 800 moves to the air inlet hole 817 for conveying the air, the air inlet hole 817 is blocked, the air in the air inlet pipe of the sliding piston 810 opens the air flow valve 813 on one side of the sliding piston 810, so that the sliding piston 810 performs the return motion and returns to the initial position, the above-mentioned process is a working cycle of the present apparatus, the equipment is suitable for secondary polishing of wood.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A burnishing device for wood working, includes main body (1), its characterized in that: the utility model discloses a grinding machine, including main part (1), import and export bottom surface fixed mounting of main part (1) has conveyer belt 2, the quantity of conveyer belt (2) is two, the inside top fixed mounting that is located right side conveyer belt (2) of main part (1) has preceding pressure tube (3), the inside upper left side fixed mounting that is located left side conveyer belt (2) of main part (1) has back pressure tube (4), the inside upper right position movable mounting that is located left side conveyer belt (2) of main part (1) has mount pad (5), the inner chamber slidable mounting of mount pad (5) has a grinding section of thick bamboo (6), grinding section of thick bamboo (6) and the rotation axis fixed connection of driving motor (7), driving motor (7) fixed mounting is in mount pad (5) one side, the inside fixed mounting of mount pad (5) has dust absorption mechanism (10), the equal slidable mounting in both sides of mount pad (5) has drive mechanism (9), the transmission mechanism (9) and the dust collection mechanism (10) are fixedly connected with the clamping mechanism (8), and the clamping mechanism (8) is fixedly arranged in the main body (1) and is located below the dust collection mechanism (10).

2. The polishing device for wood working according to claim 1, characterized in that: the clamping mechanism (8) is composed of a main chamber (80), a piston (800), a leather cup (801), an installation rod (802), a clamping wheel (803), an auxiliary chamber (81), a sliding piston (810), a hose (811), an airflow hole (812), an airflow valve (813), a magnetic piece (814), a magnetic inner wall (815), a drainage hole (816), an air inlet (817) and an exhaust hole II (818), wherein the main chamber (80) is fixedly installed inside the main body (1), the piston (800) is installed on one side of an inner cavity of the main chamber (80) in a sliding mode, the leather cup (801) is installed on the other side of the inner cavity of the main chamber (80) in a sliding mode, the leather cup (801) is fixedly sleeved at one end of the installation rod (802), the other end of the installation rod (802) penetrates through one side of the main chamber (80), and the clamping wheel (803) is installed at the other end of the installation, an auxiliary chamber (81) is fixedly installed on the upper side of the main chamber (80), a sliding piston (810) is installed in the inner cavity of the auxiliary chamber (81) in a sliding mode, an air inlet pipe of the sliding piston (810) penetrates through the upper side of the auxiliary chamber (81), the air inlet pipe is communicated with one end of a hose (811), an air flow hole (812) is formed in the sliding piston (810), one end of the air flow hole (812) is communicated with the air inlet pipe, an air flow valve (813) is fixedly installed at the position, located at the other end of the air flow hole (812), of one side of the sliding piston (810), a magnetic part (814) is installed in the sliding piston (810) in a sliding mode at the position of the air flow hole (812), the number of the magnetic parts (814) is two, a magnetic inner wall (815) is fixedly installed at the position, located at one side of the magnetic part (814), of the bottom surface of the auxiliary chamber (81), a drainage hole (816) is, the bottom surface of the auxiliary chamber (81) is provided with two air inlet holes (817), the bottom surface of the main chamber (80) is provided with an exhaust hole II (818), and the exhaust hole II (818) communicates the main chamber (80) with the external space of the main body (1).

3. The polishing device for wood working according to claim 1, characterized in that: the transmission mechanism (9) is fixedly installed inside the main body (1), the transmission mechanism (9) is composed of a first rack (90), a first gear (91), a first connecting rod (92), a second gear (93), a second rack (94), a first transmission chain (95), a third gear (96) and a third rack (97), the first rack (90) is fixedly installed on two sides of the installation seat (5), the first rack (90) is meshed with the first gear (91), the first gear (91) is fixedly connected with the second gear (93) through a first connecting rod (92), the second gear (93) is meshed with the second rack (94), the second rack (94) is fixedly installed on a sliding rod of the front pressure cylinder (3), a driving wheel of the first transmission chain (95) is fixedly connected onto the first connecting rod (92), and a driven wheel of the first transmission chain (95) is fixedly installed on the third gear (96), the driven wheel and a third gear (96) rotate synchronously, the third gear (96) is meshed with a third rack (97), and one end of the third rack (97) is fixedly connected with one side of the piston (800).

4. The polishing device for wood working according to claim 1, characterized in that: the dust collection mechanism (10) is fixedly arranged in the mounting seat (5), the dust collection mechanism (10) consists of a dust collection cavity (100), a dust collection cavity (101), an air suction fan (102), a second transmission chain (103), a second connecting rod (104), a second bevel gear (105), a first bevel gear (106), an exhaust hole I (107) and a filter screen (108), the dust collection cavity (100) is formed in the mounting seat (5), the dust collection cavity (100) is communicated with the dust collection cavity (101), the number of the dust collection cavities (101) is two, the air suction fan (102) is fixedly arranged on the inner wall of the middle of the two dust collection cavities (101), a rotating shaft of the air suction fan (102) is fixedly connected with a driven wheel of the second transmission chain (103), a driving wheel of the second transmission chain (103) is fixedly connected with one end of the second connecting rod (104), and the other end of the second connecting rod (104) is fixedly connected with the second bevel gear (105), the dust collection device is characterized in that the second bevel gear (105) is meshed with the first bevel gear (106), the first bevel gear (106) is fixedly sleeved on a rotating shaft of the driving motor (7), the dust collection cavity (101) is communicated with an exhaust hole I (107), the exhaust hole I (107) is arranged in the mounting seat (5), the exhaust hole I (107) is communicated with the other end of the hose (811), and a filter screen (108) is fixedly mounted in the exhaust hole I (107).

5. The polishing device for wood working according to claim 2, characterized in that: the magnetic member (814) is mutually repulsive with the magnetic inner wall (815).

6. The polishing device for wood working according to claim 2, characterized in that: the hose (811) is of a flexible material.

7. A polishing apparatus for wood working according to claim 3, characterized in that: the first gear (91) and the second gear (93) rotate synchronously, and the number of the gear teeth of the third gear (96) is one fifth more than that of the first gear (91).

8. The polishing device for wood working according to claim 7, characterized in that: when the first gear (91) and the second gear (93) rotate synchronously, the first rack (90) and the second rack (94) are driven to move for the same distance.

9. The polishing device for wood working according to claim 1, characterized in that: the vertical height of the grinding cylinder (6) is 5 mm lower than that of the front pressure cylinder (3).