Fluid type air duct dust removal structure of sawing machine

Abstract

The invention discloses a fluid type air duct dust removal structure of a sawing machine, and aims to overcome the defect that cuttings generated in the working process of the sawing machine are easy to splash to form dust. The device comprises a mounting rack, a saw blade is mounted on the mounting rack, an avoiding window is arranged on the mounting rack, a driving turntable and a driven turntable are mounted on the mounting rack, the saw blade is mounted between the driving turntable and the driven turntable, an air duct corresponding to the saw blade is arranged on the mounting rack, the air duct is arranged in the transmission direction of the saw blade, and openings in the two ends of the air duct are formed in the two sides of the avoiding window respectively. The saw blade penetrates through openings in the two ends of the air channel, and an exhaust pipe is installed on the installation frame and communicated with the air channel. According to the fluid type air duct dust removal structure of the sawing machine, cuttings are adsorbed and cleaned through the air duct in the working process of the sawing machine, cuttings are prevented from being accumulated, and the cuttings are prevented from splashing to form dust.

Description

Technical Field

[0001] The invention relates to the technical field of sawing machines, and more particularly to a fluid-type air duct dust removal structure of a sawing machine. Background Art

[0002] During the operation of the sawing machine, the workpiece is cut by the contact and friction between the saw blade and the workpiece. Chips are generated in the process of cutting the workpiece. After working for a long time, the chips accumulate, affecting the operation of the saw blade and the loading of the workpiece. Moreover, the chips generated in the cutting process are easy to splash and form dust, causing environmental pollution. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a fluid-type air duct dust removal structure for a sawing machine. During the operation of the sawing machine, the air duct absorbs and cleans the chips to avoid chip accumulation and prevent the chips from splashing to form dust.

[0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a fluid-type air duct dust removal structure for a sawing machine, comprising a mounting frame, a saw blade is mounted on the mounting frame, an avoidance window is arranged on the mounting frame, a driving turntable and a driven turntable are mounted on the mounting frame, the saw blade is mounted between the driving turntable and the driven turntable, air ducts are arranged on the mounting frame and corresponding to the saw blade, the air ducts are arranged along the transmission direction of the saw blade, openings at both ends of the air duct are respectively placed on both sides of the avoidance window, the saw blade passes through the openings at both ends of the air duct, an exhaust duct is installed on the mounting frame, and the exhaust duct is connected to the air duct.

[0005] During the operation of the sawing machine, the exhaust fan is used to evacuate the exhaust pipe, thereby generating negative pressure in the air duct. The chips generated during the saw blade cutting process are sucked into the air duct from the open end of the air duct and flow along the air duct to the exhaust pipe, thereby avoiding the accumulation of chips and preventing the chips from splashing to form dust. The air duct is arranged along the transmission direction of the saw blade, so that the chips remaining on the saw blade can be sucked away during the movement of the saw blade in the air duct, thereby avoiding the residual chips on the saw blade from affecting the cutting effect. The saw blade is installed between the active turntable and the driven turntable. The active turntable provides power to realize the operation of the saw blade. The avoidance window set on the mounting frame prevents the mounting frame from interfering with the workpiece to be sawed during the downward movement of the saw blade.

[0006] The fluid air duct dust removal structure of the sawing machine disclosed in the patent application absorbs and cleans the chips through the air duct during the operation of the sawing machine, thereby avoiding chip accumulation and preventing chips from splashing and forming dust.

[0007] Preferably, the openings at both ends of the air duct are respectively a saw inlet and a saw outlet, and the exhaust duct is arranged toward the saw inlet.

[0008] During the cutting transmission process, the saw blade moves outward from the saw outlet and moves from the saw entrance into the air duct. Most of the chips generated during the cutting process are carried out by the saw blade in the direction of the saw entrance, and the exhaust duct is set toward the saw entrance, so that the chips at the saw entrance are more easily absorbed into the air duct, which is beneficial to improve the air duct's adsorption and cleaning effect on the chips.

[0009] Preferably, the opening size of the saw entry is greater than the opening size of the saw exit.

[0010] During the cutting process, the chips mostly move toward the direction of the saw entry, and the opening of the saw entry is larger than the opening of the saw exit, which is conducive to the rapid adsorption and cleaning of the chips.

[0011] Preferably, the exhaust duct is connected to a corner of the mounting frame, and an opening end of the exhaust duct is arranged to open toward one end of the air duct.

[0012] The opening end of the exhaust pipe is arranged toward the air duct opening, which is beneficial to speeding up the speed at which the chips are adsorbed and moved toward the exhaust pipe, thereby improving the adsorption effect on the chips.

[0013] Preferably, a pressure storage chamber connected to the air duct is provided on the mounting frame at a position corresponding to the exhaust pipe, and an open end of the exhaust pipe is connected to a side wall of the pressure storage chamber accordingly.

[0014] The arrangement of the pressure storage chamber increases the chip holding space, which is conducive to the chips being adsorbed and collected into the pressure storage chamber, and then being sucked into the exhaust pipe and discharged outwardly.

[0015] Preferably, a baffle is installed in the pressure storage chamber near one end of the exhaust duct opening, and the end of the baffle is bent into an arc toward the pressure storage chamber; a guide plate is installed in the pressure storage chamber, the guide plate is inclined, one end of the guide plate is connected to the inner wall of the air duct, and the other end of the guide plate extends to the opening of the exhaust duct, and the guide plate and the baffle are arranged opposite to each other.

[0016] The baffle plate can accumulate the pressure of the pressure storage chamber to ensure the adsorption force on the air duct opening opposite to the exhaust pipe. The baffle plate can also block the chips to prevent the chips from moving away from the exhaust pipe.

[0017] The guide plate plays a role in guiding the airflow, which is beneficial for the airflow to flow toward the opening of the exhaust duct and ensures the adsorption force of the airflow.

[0018] Preferably, a ventilation hood is provided at the end of the exhaust pipe, the ventilation hood is connected to the air duct, and the ventilation hood is a trumpet-shaped structure.

[0019] The trumpet-shaped ventilation hood is conducive to the flow of air and the adsorption and collection of chips.

[0020] Preferably, the mounting frame includes a left frame and a right frame, a connecting beam is fastened between the left frame and the right frame, the air duct includes a left ventilation section, a transition ventilation section and a right ventilation section, the left ventilation section is arranged on the left frame, the right ventilation section is arranged on the right frame, and the transition ventilation section is arranged on the connecting beam.

[0021] The left frame and the right frame are connected by a connecting beam, so that an avoidance window is formed between the left frame and the right frame. The air duct includes a left ventilation section, a transition ventilation section and a right ventilation section, and is easy to lay out.

[0022] Preferably, a slide is installed on the mounting frame and corresponding to the driven turntable, the slide is slidably arranged, a tensioning piston cylinder is installed on the mounting frame, a telescopic rod of the tensioning piston cylinder is connected to the slide, and the driven turntable is rotatably mounted on the slide.

[0023] The tensioning piston cylinder works, and the telescopic rod of the tensioning piston cylinder extends to push the slide seat to move, thereby tightening the saw blade and ensuring the smooth operation of the saw blade.

[0024] Preferably, two sinking grooves are arranged on the mounting frame, the driving turntable and the driven turntable are respectively mounted in the two sinking grooves, and the corresponding positions of the two sinking grooves on the mounting frame are tightly connected to the closing cover.

[0025] The setting of the sinking trough facilitates the installation of the active turntable and the driven turntable.

[0026] Compared with the prior art, the beneficial effect of the present invention is that the fluid air duct dust removal structure of the sawing machine in the patent application absorbs and cleans the chips in the air duct during the operation of the sawing machine, thereby avoiding chip accumulation and preventing chips from splashing to form dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a schematic diagram of the layout of the air duct of the present invention.

[0029] Figure 3 It is a back structural diagram of the present invention.

[0030] Figure 4 It is a schematic diagram of installing the driven turntable of the present invention.

[0031] Figure 5 It is a schematic diagram of the position of the pressure storage chamber of the present invention.

[0032] Figure 6 It is a partial schematic diagram of embodiment 2 of the present invention.

[0033] Figure 7 It is a partial schematic diagram of Example 3 of the present invention.

[0034] In the figure: 1, mounting frame, 2, saw blade, 3, avoidance window, 4, active turntable, 5, driven turntable, 6, driving motor, 7, active pulley, 8, rotating shaft, 9, mounting seat, 10, driven pulley, 11, air duct, 12, exhaust pipe, 13, saw inlet, 14, saw outlet, 15, saw blade guide device, 16, left frame, 17, right frame, 18, connecting beam, 19, left ventilation section, 20, transition ventilation section, 21, right ventilation section, 22, sinking trough, 23, closing cover, 24, sliding seat, 25, tensioner Plug cylinder, 26, slide rail, 27, linear slider, 28, driven shaft, 29, waist-shaped groove, 30, sealing plate, 31, ventilation hood, 32, pressure storage chamber, 33, baffle plate, 34, guide plate, 35, baffle, 36, push plate, 37, transmission wheel, 38, slider, 39, push groove, 40, guide column, 41, push rod, 42, return spring, 43, push strip, 44, transmission teeth, 45, meshing teeth, 46, boss, 47, transmission rod, 48, roller, 49, long groove, 50, plug column, 51, chip removal brush. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Embodiment 1: A fluid-type air duct dust removal structure for a sawing machine (see attached Figure 1 To Attachment Figure 5 ), including a mounting frame 1, the mounting frame 1 is arranged obliquely, a saw blade 2 is installed on the mounting frame 1, an avoidance window 3 is set on the mounting frame 1, a driving turntable 4 and a driven turntable 5 are installed on the mounting frame 1, the saw blade 2 is installed between the driving turntable 4 and the driven turntable 5, a driving motor 6 is installed on the mounting frame 1 and the driving turntable 4, a driving pulley 7 is installed on the output shaft of the driving motor 6, the center of the driving turntable 4 is connected to a rotating shaft 8, a mounting seat 9 is set on the mounting frame 1 and the driving turntable 4, the rotating shaft 8 is rotatably installed on the mounting seat 9, a driven pulley 10 is installed on the rotating shaft 8, and a belt transmission is provided between the driving pulley 7 and the driven pulley 10. A bearing is installed between the rotating shaft 8 and the mounting seat 9.

[0036] An air duct 11 is arranged on the mounting frame 1 corresponding to the saw blade 2. The air duct 11 is arranged along the transmission direction of the saw blade 2. The openings at both ends of the air duct 11 are respectively placed on both sides of the avoidance window 3. The saw blade 2 passes through the openings at both ends of the air duct 11. An exhaust pipe 12 is installed on the mounting frame 1. The exhaust pipe 12 is connected to the air duct 11. The exhaust pipe 12 is connected to the exhaust fan. The exhaust fan exhausts the exhaust pipe 12 to generate negative pressure in the air duct 11.

[0037] The openings at both ends of the air duct 11 are respectively a saw inlet 13 and a saw outlet 14, and the exhaust pipe 12 is arranged toward the saw inlet 13. Saw blade guide devices 15 are arranged at the corresponding positions of the openings at both ends of the air duct 11 on the mounting frame 1, and the saw inlet 13 and the saw outlet 14 are placed on the two saw blade guide devices 15 respectively. The saw blade guide device 15 guides and corrects the saw blade 2 to ensure that the saw blade 2 is vertical to the workpiece to be sawed for cutting. The opening size of the saw inlet 13 is greater than the opening size of the saw outlet 14. During the cutting process, the chips mostly move toward the direction of the saw inlet 13, and the opening of the saw inlet 13 is larger than the opening of the saw outlet 14, which is conducive to the rapid adsorption and cleaning of the chips.

[0038] The mounting frame 1 includes a left frame 16 and a right frame 17, and a connecting beam 18 is fastened between the left frame 16 and the right frame 17. The air duct 11 includes a left ventilation section 19, a transition ventilation section 20 and a right ventilation section 21. The left ventilation section 19 is arranged on the left frame 16, the right ventilation section 21 is arranged on the right frame 17, and the transition ventilation section 20 is arranged on the connecting beam 18. The driven turntable 5 is rotatably mounted on the left frame 16, and the left ventilation section 19 is arranged on the periphery of the driven turntable 5. The driving turntable 4 is rotatably mounted on the right frame 17, and the right ventilation section 21 is arranged on the periphery of the driving turntable 4. Two sinking grooves 22 are arranged on the mounting frame 1, and the two sinking grooves 22 are respectively arranged on the left frame 16 and the right frame 17. The driving turntable 4 and the driven turntable 5 are respectively installed in the two sinking grooves 22, and the corresponding parts of the two sinking grooves 22 on the mounting frame 1 are tightly connected to the closing cover 23.

[0039] The mounting frame 1 is provided with a slide 24 corresponding to the driven turntable 5. The slide 24 is slidably arranged. The mounting frame 1 is provided with a tensioning piston cylinder 25. The telescopic rod of the tensioning piston cylinder 25 is connected to the slide 24. The driven turntable 5 is rotatably mounted on the slide 24. Two slide rails 26 are provided on the mounting frame 1 corresponding to the slide 24. A linear slider 27 is provided on the slide 24. The linear slider 27 is adapted to be connected to the slide rail 26. A driven shaft 28 is provided on the slide 24. The driven shaft 28 is rotatably arranged. A bearing is provided between the driven shaft 28 and the slide 24. The driven turntable 5 is tightly connected to the driven shaft 28. A waist-shaped groove 29 is provided on the mounting frame 1 corresponding to the driven shaft 28. A sealing plate 30 is provided on the driven shaft 28. The sealing plate 30 seals and covers the waist-shaped groove 29. The driven shaft 28 is movably inserted into the waist-shaped groove 29. During the movement of the slide seat 24 , the driven shaft 28 slides in the waist-shaped groove 29 , and the sealing plate 30 always seals and covers the waist-shaped groove 29 during the movement.

[0040] The exhaust pipe 12 is connected to the corner of the mounting frame 1, and the open end of the exhaust pipe 12 is arranged toward one end of the air duct 11. In this embodiment, the exhaust pipe 12 is installed at the lower right corner of the right frame 17, and the chips are more likely to enter the exhaust pipe 12 under gravity during the adsorption process. A ventilation hood 31 is arranged at the end of the exhaust pipe 12, and the ventilation hood 31 is connected to the air duct 11, and the ventilation hood 31 is a trumpet-shaped structure. The ventilation hood 31 gradually becomes larger in the direction close to the mounting frame 1.

[0041] A pressure storage chamber 32 connected to the air duct 11 is provided on the mounting frame 1 at a position corresponding to the exhaust pipe 12, and the open end of the exhaust pipe 12 is connected to a side wall of the pressure storage chamber 32. The pressure storage chamber 32 is provided at the lower right corner of the right frame 17, and the open end of the exhaust pipe 12 is connected to the pressure storage chamber 32. A baffle plate 33 is provided in the pressure storage chamber 32 near the opening end of the exhaust pipe 12, and the end of the baffle plate 33 is bent into an arc toward the pressure storage chamber 32; a plurality of baffle plates 33 are provided at intervals, and three baffle plates 33 are provided at intervals in this embodiment. A guide plate 34 is provided in the pressure storage chamber 32, and the guide plate 34 is provided at an angle, one end of the guide plate 34 is connected to the inner wall of the air duct 11, and the other end of the guide plate 34 extends to the opening of the exhaust pipe 12, and the guide plate 34 and the baffle plate 33 are provided opposite to each other. A baffle plate 35 is provided in front of the frontmost baffle plate 33, and the baffle plate 35 is provided downwardly inclined toward the exhaust pipe 12.

[0042] During the operation of the sawing machine, the exhaust fan is used to exhaust air from the exhaust pipe 12, thereby generating a negative pressure in the air duct 11. The chips generated during the cutting process of the saw blade 2 are sucked into the air duct 11 from the open end of the air duct 11, and flow along the air duct 11 to the exhaust pipe 12, thereby avoiding the accumulation of chips and preventing the chips from splashing to form dust. The air duct 11 is arranged along the transmission direction of the saw blade 2, so that the chips remaining on the saw blade 2 can be sucked away during the movement of the saw blade 2 in the air duct 11, thereby avoiding the residual chips on the saw blade 2 from affecting the cutting effect. The saw blade 2 is installed between the active turntable 4 and the driven turntable 5. The active turntable 4 provides power to realize the operation of the saw blade 2. The avoidance window 3 provided on the mounting frame 1 prevents the mounting frame 1 from interfering with the workpiece to be sawed during the downward movement of the saw blade 2.

[0043] Embodiment 2: A fluid-type air duct dust removal structure for a sawing machine (see attached Figure 1 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 ), including a mounting frame 1, the mounting frame 1 is arranged obliquely, a saw blade 2 is installed on the mounting frame 1, an avoidance window 3 is set on the mounting frame 1, a driving turntable 4 and a driven turntable 5 are installed on the mounting frame 1, the saw blade 2 is installed between the driving turntable 4 and the driven turntable 5, a driving motor 6 is installed on the mounting frame 1 and the driving turntable 4, a driving pulley 7 is installed on the output shaft of the driving motor 6, the center of the driving turntable 4 is connected to a rotating shaft 8, a mounting seat 9 is set on the mounting frame 1 and the driving turntable 4, the rotating shaft 8 is rotatably installed on the mounting seat 9, a driven pulley 10 is installed on the rotating shaft 8, and a belt transmission is provided between the driving pulley 7 and the driven pulley 10. A bearing is installed between the rotating shaft 8 and the mounting seat 9.

[0044] An air duct 11 is arranged on the mounting frame 1 corresponding to the saw blade 2. The air duct 11 is arranged along the transmission direction of the saw blade 2. The openings at both ends of the air duct 11 are respectively placed on both sides of the avoidance window 3. The saw blade 2 passes through the openings at both ends of the air duct 11. An exhaust pipe 12 is installed on the mounting frame 1. The exhaust pipe 12 is connected to the air duct 11. The exhaust pipe 12 is connected to the exhaust fan. The exhaust fan exhausts the exhaust pipe 12 to generate negative pressure in the air duct 11.

[0045] The openings at both ends of the air duct 11 are respectively a saw inlet 13 and a saw outlet 14, and the exhaust pipe 12 is arranged toward the saw inlet 13. Saw blade guide devices 15 are arranged at the corresponding positions of the openings at both ends of the air duct 11 on the mounting frame 1, and the saw inlet 13 and the saw outlet 14 are placed on the two saw blade guide devices 15 respectively. The saw blade guide device 15 guides and corrects the saw blade 2 to ensure that the saw blade 2 is vertical to the workpiece to be sawed for cutting. The opening size of the saw inlet 13 is greater than the opening size of the saw outlet 14. During the cutting process, the chips mostly move toward the direction of the saw inlet 13, and the opening of the saw inlet 13 is larger than the opening of the saw outlet 14, which is conducive to the rapid adsorption and cleaning of the chips.

[0046] The mounting frame 1 includes a left frame 16 and a right frame 17, and a connecting beam 18 is fastened between the left frame 16 and the right frame 17. The air duct 11 includes a left ventilation section 19, a transition ventilation section 20 and a right ventilation section 21. The left ventilation section 19 is arranged on the left frame 16, the right ventilation section 21 is arranged on the right frame 17, and the transition ventilation section 20 is arranged on the connecting beam 18. The driven turntable 5 is rotatably mounted on the left frame 16, and the left ventilation section 19 is arranged on the periphery of the driven turntable 5. The driving turntable 4 is rotatably mounted on the right frame 17, and the right ventilation section 21 is arranged on the periphery of the driving turntable 4. Two sinking grooves 22 are arranged on the mounting frame 1, and the two sinking grooves 22 are respectively arranged on the left frame 16 and the right frame 17. The driving turntable 4 and the driven turntable 5 are respectively installed in the two sinking grooves 22, and the corresponding parts of the two sinking grooves 22 on the mounting frame 1 are tightly connected to the closing cover 23.

[0047] The mounting frame 1 is provided with a slide 24 corresponding to the driven turntable 5. The slide 24 is slidably arranged. The mounting frame 1 is provided with a tensioning piston cylinder 25. The telescopic rod of the tensioning piston cylinder 25 is connected to the slide 24. The driven turntable 5 is rotatably mounted on the slide 24. Two slide rails 26 are provided on the mounting frame 1 corresponding to the slide 24. A linear slider 27 is provided on the slide 24. The linear slider 27 is adapted to be connected to the slide rail 26. A driven shaft 28 is provided on the slide 24. The driven shaft 28 is rotatably arranged. A bearing is provided between the driven shaft 28 and the slide 24. The driven turntable 5 is tightly connected to the driven shaft 28. A waist-shaped groove 29 is provided on the mounting frame 1 corresponding to the driven shaft 28. A sealing plate 30 is provided on the driven shaft 28. The sealing plate 30 seals and covers the waist-shaped groove 29. The driven shaft 28 is movably inserted into the waist-shaped groove 29. During the movement of the slide seat 24 , the driven shaft 28 slides in the waist-shaped groove 29 , and the sealing plate 30 always seals and covers the waist-shaped groove 29 during the movement.

[0048] The exhaust pipe 12 is connected to the corner of the mounting frame 1, and the open end of the exhaust pipe 12 is arranged toward one end of the air duct 11. In this embodiment, the exhaust pipe 12 is installed at the lower right corner of the right frame 17, and the chips are more likely to enter the exhaust pipe 12 under gravity during the adsorption process. A ventilation hood 31 is arranged at the end of the exhaust pipe 12, and the ventilation hood 31 is connected to the air duct 11, and the ventilation hood 31 is a trumpet-shaped structure. The ventilation hood 31 gradually becomes larger in the direction close to the mounting frame 1.

[0049] A pressure storage chamber 32 connected to the air duct 11 is provided on the mounting frame 1 at a position corresponding to the exhaust pipe 12, and the open end of the exhaust pipe 12 is connected to a side wall of the pressure storage chamber 32. The pressure storage chamber 32 is provided at the lower right corner of the right frame 17, and the open end of the exhaust pipe 12 is connected to the pressure storage chamber 32. A baffle plate 33 is provided in the pressure storage chamber 32 near the opening end of the exhaust pipe 12, and the end of the baffle plate 33 is bent into an arc toward the pressure storage chamber 32; a plurality of baffle plates 33 are provided at intervals, and three baffle plates 33 are provided at intervals in this embodiment. A guide plate 34 is provided in the pressure storage chamber 32, and the guide plate 34 is provided at an angle, one end of the guide plate 34 is connected to the inner wall of the air duct 11, and the other end of the guide plate 34 extends to the opening of the exhaust pipe 12, and the guide plate 34 and the baffle plate 33 are provided opposite to each other. A baffle plate 35 is provided in front of the frontmost baffle plate 33, and the baffle plate 35 is provided downwardly inclined toward the exhaust pipe 12.

[0050] The mounting frame 1 is provided with an air pressure regulating mechanism, which includes a push plate 36, a transmission wheel 37, and two oppositely arranged sliders 38. The two sliders 38 are slidably mounted on both sides of the air duct 11. The push plate 36 is provided with two inclined push grooves 39. The slider 38 is provided with a guide column 40. The two guide columns 40 are respectively connected with the two push grooves 39 by plugging. The transmission wheel 37 is connected with the driving turntable 4 by transmission. The push plate 36 is provided with a push rod 41. A return spring 42 is installed between the push plate 36 and the mounting frame 1. The transmission wheel 37 is provided with a push bar 43 which is arranged eccentrically in the circumferential direction. The push bar 43 pushes against the push bar 41 to push the push plate 36 to move. Since the slide column is connected with the inclined push groove 39 on the push plate 36 by plugging, during the movement of the push plate 36, the two sliders 38 are pushed closer to each other through the push groove 39, thereby reducing the ventilation gap of the air duct 11 at the slider 38, increasing the air pressure, and facilitating the adsorption of the chips at the far end of the air duct 11.

[0051] A circle of transmission teeth 44 is arranged on the outer wall of the transmission wheel 37, a convex ring is arranged on the active rotating disk 4, a section of meshing teeth 45 is arranged on the outer wall of the convex ring, and the meshing teeth 45 can be adapted to mesh with the transmission teeth 44. A circular boss 46 is arranged on the transmission wheel 37, and a push bar 43 is arranged on the outer wall of the boss 46. The opposite surfaces of the two sliders 38 are inclined, and the end faces of the two sliders 38 are arranged in an eight-shaped shape. The push grooves 39 on the two sliders 38 are inclined and arranged in an eight-shaped shape. The transmission wheel 37 is rotatably mounted on the closing cover 23. The wind pressure regulating mechanism is arranged at the upper left corner of the active rotating disk 4. The transmission wheel 37 rotates unidirectionally, a circle of ratchet teeth is arranged on the transmission wheel 37, and a ratchet is arranged on the mounting frame 1. The ratchet is stuck between two adjacent ratchet teeth to realize the unidirectional rotation of the transmission wheel 37.

[0052] During the operation of the sawing machine, the exhaust fan is used to exhaust air from the exhaust pipe 12, thereby generating a negative pressure in the air duct 11. The chips generated during the cutting process of the saw blade 2 are sucked into the air duct 11 from the open end of the air duct 11, and flow along the air duct 11 to the exhaust pipe 12, thereby avoiding the accumulation of chips and preventing the chips from splashing to form dust. The air duct 11 is arranged along the transmission direction of the saw blade 2, so that the chips remaining on the saw blade 2 can be sucked away during the movement of the saw blade 2 in the air duct 11, thereby avoiding the residual chips on the saw blade 2 from affecting the cutting effect. The saw blade 2 is installed between the active turntable 4 and the driven turntable 5. The active turntable 4 provides power to realize the operation of the saw blade 2. The avoidance window 3 provided on the mounting frame 1 prevents the mounting frame 1 from interfering with the workpiece to be sawed during the downward movement of the saw blade 2.

[0053] Embodiment 3: A fluid-type air duct dust removal structure for a sawing machine (see attached Figure 1 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 7 ), including a mounting frame 1, the mounting frame 1 is arranged obliquely, a saw blade 2 is installed on the mounting frame 1, an avoidance window 3 is set on the mounting frame 1, a driving turntable 4 and a driven turntable 5 are installed on the mounting frame 1, the saw blade 2 is installed between the driving turntable 4 and the driven turntable 5, a driving motor 6 is installed on the mounting frame 1 and the driving turntable 4, a driving pulley 7 is installed on the output shaft of the driving motor 6, the center of the driving turntable 4 is connected to a rotating shaft 8, a mounting seat 9 is set on the mounting frame 1 and the driving turntable 4, the rotating shaft 8 is rotatably installed on the mounting seat 9, a driven pulley 10 is installed on the rotating shaft 8, and a belt transmission is provided between the driving pulley 7 and the driven pulley 10. A bearing is installed between the rotating shaft 8 and the mounting seat 9.

[0054] An air duct 11 is arranged on the mounting frame 1 corresponding to the saw blade 2. The air duct 11 is arranged along the transmission direction of the saw blade 2. The openings at both ends of the air duct 11 are respectively placed on both sides of the avoidance window 3. The saw blade 2 passes through the openings at both ends of the air duct 11. An exhaust pipe 12 is installed on the mounting frame 1. The exhaust pipe 12 is connected to the air duct 11. The exhaust pipe 12 is connected to the exhaust fan. The exhaust fan exhausts the exhaust pipe 12 to generate negative pressure in the air duct 11.

[0055] The openings at both ends of the air duct 11 are respectively a saw inlet 13 and a saw outlet 14, and the exhaust pipe 12 is arranged toward the saw inlet 13. Saw blade guide devices 15 are arranged at the corresponding positions of the openings at both ends of the air duct 11 on the mounting frame 1, and the saw inlet 13 and the saw outlet 14 are placed on the two saw blade guide devices 15 respectively. The saw blade guide device 15 guides and corrects the saw blade 2 to ensure that the saw blade 2 is vertical to the workpiece to be sawed for cutting. The opening size of the saw inlet 13 is greater than the opening size of the saw outlet 14. During the cutting process, the chips mostly move toward the direction of the saw inlet 13, and the opening of the saw inlet 13 is larger than the opening of the saw outlet 14, which is conducive to the rapid adsorption and cleaning of the chips.

[0056] The mounting frame 1 includes a left frame 16 and a right frame 17, and a connecting beam 18 is fastened between the left frame 16 and the right frame 17. The air duct 11 includes a left ventilation section 19, a transition ventilation section 20 and a right ventilation section 21. The left ventilation section 19 is arranged on the left frame 16, the right ventilation section 21 is arranged on the right frame 17, and the transition ventilation section 20 is arranged on the connecting beam 18. The driven turntable 5 is rotatably mounted on the left frame 16, and the left ventilation section 19 is arranged on the periphery of the driven turntable 5. The driving turntable 4 is rotatably mounted on the right frame 17, and the right ventilation section 21 is arranged on the periphery of the driving turntable 4. Two sinking grooves 22 are arranged on the mounting frame 1, and the two sinking grooves 22 are respectively arranged on the left frame 16 and the right frame 17. The driving turntable 4 and the driven turntable 5 are respectively installed in the two sinking grooves 22, and the corresponding parts of the two sinking grooves 22 on the mounting frame 1 are tightly connected to the closing cover 23.

[0057] The mounting frame 1 is provided with a slide 24 corresponding to the driven turntable 5. The slide 24 is slidably arranged. The mounting frame 1 is provided with a tensioning piston cylinder 25. The telescopic rod of the tensioning piston cylinder 25 is connected to the slide 24. The driven turntable 5 is rotatably mounted on the slide 24. Two slide rails 26 are provided on the mounting frame 1 corresponding to the slide 24. A linear slider 27 is provided on the slide 24. The linear slider 27 is adapted to be connected to the slide rail 26. A driven shaft 28 is provided on the slide 24. The driven shaft 28 is rotatably arranged. A bearing is provided between the driven shaft 28 and the slide 24. The driven turntable 5 is tightly connected to the driven shaft 28. A waist-shaped groove 29 is provided on the mounting frame 1 corresponding to the driven shaft 28. A sealing plate 30 is provided on the driven shaft 28. The sealing plate 30 seals and covers the waist-shaped groove 29. The driven shaft 28 is movably inserted into the waist-shaped groove 29. During the movement of the slide seat 24 , the driven shaft 28 slides in the waist-shaped groove 29 , and the sealing plate 30 always seals and covers the waist-shaped groove 29 during the movement.

[0058] The exhaust pipe 12 is connected to the corner of the mounting frame 1, and the open end of the exhaust pipe 12 is arranged toward one end of the air duct 11. In this embodiment, the exhaust pipe 12 is installed at the lower right corner of the right frame 17, and the chips are more likely to enter the exhaust pipe 12 under gravity during the adsorption process. A ventilation hood 31 is arranged at the end of the exhaust pipe 12, and the ventilation hood 31 is connected to the air duct 11, and the ventilation hood 31 is a trumpet-shaped structure. The ventilation hood 31 gradually becomes larger in the direction close to the mounting frame 1.

[0059] A pressure storage chamber 32 connected to the air duct 11 is provided on the mounting frame 1 at a position corresponding to the exhaust pipe 12, and the open end of the exhaust pipe 12 is connected to a side wall of the pressure storage chamber 32. The pressure storage chamber 32 is provided at the lower right corner of the right frame 17, and the open end of the exhaust pipe 12 is connected to the pressure storage chamber 32. A baffle plate 33 is provided in the pressure storage chamber 32 near the opening end of the exhaust pipe 12, and the end of the baffle plate 33 is bent into an arc toward the pressure storage chamber 32; a plurality of baffle plates 33 are provided at intervals, and three baffle plates 33 are provided at intervals in this embodiment. A guide plate 34 is provided in the pressure storage chamber 32, and the guide plate 34 is provided at an angle, one end of the guide plate 34 is connected to the inner wall of the air duct 11, and the other end of the guide plate 34 extends to the opening of the exhaust pipe 12, and the guide plate 34 and the baffle plate 33 are provided opposite to each other. A baffle plate 35 is provided in front of the frontmost baffle plate 33, and the baffle plate 35 is provided downwardly inclined toward the exhaust pipe 12.

[0060] The mounting frame 1 is provided with an air pressure regulating mechanism, which includes a push plate 36, a transmission wheel 37, and two oppositely arranged sliders 38. The two sliders 38 are slidably mounted on both sides of the air duct 11. The push plate 36 is provided with two inclined push grooves 39. The slider 38 is provided with a guide column 40. The two guide columns 40 are respectively connected with the two push grooves 39 by plugging. The transmission wheel 37 is connected with the driving turntable 4 by transmission. The push plate 36 is provided with a push rod 41. A return spring 42 is installed between the push plate 36 and the mounting frame 1. The transmission wheel 37 is provided with a push bar 43 which is arranged eccentrically in the circumferential direction. The push bar 43 pushes against the push bar 41 to push the push plate 36 to move. Since the slide column is connected with the inclined push groove 39 on the push plate 36 by plugging, during the movement of the push plate 36, the two sliders 38 are pushed closer to each other through the push groove 39, thereby reducing the ventilation gap of the air duct 11 at the slider 38, increasing the air pressure, and facilitating the adsorption of the chips at the far end of the air duct 11.

[0061] A circle of transmission teeth 44 is arranged on the outer wall of the transmission wheel 37, a convex ring is arranged on the active rotating disk 4, a section of meshing teeth 45 is arranged on the outer wall of the convex ring, and the meshing teeth 45 can be adapted to mesh with the transmission teeth 44. A circular boss 46 is arranged on the transmission wheel 37, and a push bar 43 is arranged on the outer wall of the boss 46. The opposite surfaces of the two sliders 38 are inclined, and the end faces of the two sliders 38 are arranged in an eight-shaped shape. The push grooves 39 on the two sliders 38 are inclined and arranged in an eight-shaped shape. The transmission wheel 37 is rotatably mounted on the closing cover 23. The wind pressure regulating mechanism is arranged at the upper left corner of the active rotating disk 4. The transmission wheel 37 rotates unidirectionally, a circle of ratchet teeth is arranged on the transmission wheel 37, and a ratchet is arranged on the mounting frame 1. The ratchet is stuck between two adjacent ratchet teeth to realize the unidirectional rotation of the transmission wheel 37.

[0062] A V-shaped transmission rod 47 is rotatably mounted on the mounting frame 1, a roller 48 is mounted on one end of the transmission rod 47, a brush is arranged on the outer wall of the roller 48, a long groove 49 is arranged on the other end of the transmission rod 47, a plug post 50 is arranged on the push plate 36, the plug post 50 is inserted into the long groove 49, and the push plate 36 moves to drive the transmission rod 47 to rotate, so that the brush is close to the side wall of the active rotating disk 4. When the brush is close to the side wall of the active rotating disk 4, the chips remaining on the side wall during the rotation of the active rotating disk 4 can be removed by the brush, so as to avoid the wear caused by the chips remaining on the side wall of the active rotating disk 4, and ensure the transmission efficiency of the active rotating disk 4 and the saw blade 2.

[0063] Chip removal brushes 51 are installed on both sides of the saw blade 2 in the air duct 11. The chip removal brushes 51 are set at the upper left corner of the active turntable 4. The chip removal brushes 51 are rotatable. The bristles on the chip removal brushes 51 are attached to the surface of the saw blade 2. The chips remaining during the operation of the saw blade 2 can be cleaned up by the chip removal brushes 51.

[0064] During the operation of the sawing machine, the exhaust fan is used to exhaust air from the exhaust pipe 12, thereby generating a negative pressure in the air duct 11. The chips generated during the cutting process of the saw blade 2 are sucked into the air duct 11 from the open end of the air duct 11, and flow along the air duct 11 to the exhaust pipe 12, thereby avoiding the accumulation of chips and preventing the chips from splashing to form dust. The air duct 11 is arranged along the transmission direction of the saw blade 2, so that the chips remaining on the saw blade 2 can be sucked away during the movement of the saw blade 2 in the air duct 11, thereby avoiding the residual chips on the saw blade 2 from affecting the cutting effect. The saw blade 2 is installed between the active turntable 4 and the driven turntable 5. The active turntable 4 provides power to realize the operation of the saw blade 2. The avoidance window 3 provided on the mounting frame 1 prevents the mounting frame 1 from interfering with the workpiece to be sawed during the downward movement of the saw blade 2.

[0065] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A fluid duct dust removal structure for a sawing machine, comprising a mounting frame, on which a saw blade is mounted, characterized in that: An avoidance window is arranged on the mounting frame, an active turntable and a driven turntable are arranged on the mounting frame, a saw blade is arranged between the active turntable and the driven turntable, an air duct is arranged on the mounting frame and corresponding to the saw blade, the air duct is arranged along the transmission direction of the saw blade, openings at both ends of the air duct are respectively arranged on both sides of the avoidance window, the saw blade passes through the openings at both ends of the air duct, an exhaust duct is arranged on the mounting frame, and the exhaust duct is connected with the air duct.

2. A fluid-type air duct dust removal structure for a sawing machine according to claim 1, characterized in that: The openings at both ends of the air duct are respectively a saw inlet and a saw outlet, and the exhaust duct is arranged toward the saw inlet.

3. A fluid-type air duct dust removal structure for a sawing machine according to claim 2, characterized in that: The opening size of the entry saw cut is greater than the opening size of the exit saw cut.

4. The sawing machine fluid type air duct dust removal structure according to claim 1 is characterized in that: The exhaust pipe is connected to the corner of the mounting frame, and the opening end of the exhaust pipe is arranged toward one end of the air duct.

5. The sawing machine fluid type air duct dust removal structure according to claim 1 is characterized in that: A pressure storage chamber communicated with the air duct is arranged on the mounting frame at a position corresponding to the exhaust pipe, and an opening end of the exhaust pipe is correspondingly connected to a side wall of the pressure storage chamber.

6. A fluid-type air duct dust removal structure for a sawing machine according to claim 5, characterized in that: A baffle is installed in the pressure storage chamber near one end of the exhaust pipe opening, and the end of the baffle is bent into an arc toward the pressure storage chamber; a guide plate is installed in the pressure storage chamber, the guide plate is inclined, one end of the guide plate is connected to the inner wall of the air duct, and the other end of the guide plate extends to the opening of the exhaust pipe, and the guide plate and the baffle are arranged opposite to each other.

7. The sawing machine fluid type air duct dust removal structure according to claim 1 is characterized in that: A ventilation hood is arranged at the end of the exhaust pipe, the ventilation hood is communicated with the air duct, and the ventilation hood is in a trumpet-shaped structure.

8. The sawing machine fluid type air duct dust removal structure according to claim 1 is characterized in that: The mounting frame includes a left frame and a right frame, and a connecting beam is fastened between the left frame and the right frame. The air duct includes a left ventilation section, a transition ventilation section and a right ventilation section. The left ventilation section is arranged on the left frame, the right ventilation section is arranged on the right frame, and the transition ventilation section is arranged on the connecting beam.

9. A fluid-type air duct dust removal structure for a sawing machine according to any one of claims 1 to 8, characterized in that: A slide seat is installed on the mounting frame and in correspondence with the driven turntable, the slide seat is slidably arranged, a tensioning piston cylinder is installed on the mounting frame, a telescopic rod of the tensioning piston cylinder is connected with the slide seat, and the driven turntable is rotatably mounted on the slide seat.

10. A fluid-type air duct dust removal structure for a sawing machine according to any one of claims 1 to 8, characterized in that: Two sinking grooves are arranged on the mounting frame, and the driving turntable and the driven turntable are respectively mounted in the two sinking grooves, and the corresponding positions of the two sinking grooves on the mounting frame are tightly connected with the closing cover.

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