Three-chuck groove pipe cutting system

Abstract

The invention relates to the technical field of pipe cutting machines, in particular to a three-chuck groove pipe cutting system which comprises a side hanging frame, a portal frame, a first chuck, a second chuck, a third chuck, a laser cutting assembly, a follow-up device, an air draft dust removal device and a dust filtering device. The first chuck, the second chuck and the third chuck are sequentially arranged on the same side of the side hanging frame in the length direction of the side hanging frame, the gantry frame is arranged on the side hanging frame, the laser cutting assembly is arranged on the gantry frame, the follow-up device is arranged on the side hanging frame adjacent to the gantry frame, and the laser cutting assembly is arranged on the follow-up device adjacent to the gantry frame. The air draft and dust removal device and the dust filtration device are respectively arranged on the follow-up device, and the air draft and dust removal device is communicated with the dust filtration device. According to the three-chuck groove pipe cutting system, dust generated during cutting can be removed to the maximum extent, and the influence of the dust on the health of operators and the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pipe cutting machines, in particular to a three-chuck bevel pipe cutting system. Background Art

[0002] With the rapid development of the manufacturing industry, laser pipe cutting not only provides extremely high precision, but also produces smooth, burr-free edges, eliminating the need for subsequent grinding or finishing. This not only improves production efficiency but also reduces additional processing costs. However, existing laser beveling cutting machines not only generate harmful gases and dust during beveling, but the changing cutting direction of the laser cutting head also causes the generated harmful gases and dust to spread in different directions, seriously affecting the health of operators and increasing environmental damage.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a three-chuck bevel pipe cutting system to solve the problem that the existing bevel pipe cutting machine cannot remove the harmful gases and dust generated during cutting.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A three-chuck bevel pipe cutting system includes a side hanger, a gantry, a first chuck, a second chuck, a third chuck, a laser cutting assembly, a follower, an exhaust dust removal device and a dust filtering device. The first chuck, the second chuck and the third chuck are arranged in sequence on the same side along the length direction of the side hanger. The gantry is arranged on the side hanger, the laser cutting assembly is arranged on the gantry, the follower is arranged on the side hanger adjacent to the gantry, the exhaust dust removal device and the dust filtering device are respectively arranged on the follower, and the exhaust dust removal device and the dust filtering device are connected.

[0007] As described above, a three-chuck bevel pipe cutting system, the follower device includes a moving seat, a lifting device and a flipping device, the moving seat is slidably arranged on the side hanging frame, the lifting device is arranged on the moving seat, and the flipping device is arranged on one side of the lifting device on the same side as the first chuck, the exhaust and dust removal device includes an exhaust hood, a connecting pipe and a centrifugal fan, the exhaust hood is arranged on the side of the flipping device away from the lifting device, the centrifugal fan is arranged on the moving seat, the two ends of the connecting pipe are connected to the exhaust hood and the centrifugal fan respectively, and the dust filtering device is connected to the centrifugal fan.

[0008] As described above, a three-chuck bevel pipe cutting system, the lifting device includes a lifting plate, two supporting columns, two guide mechanisms and a drive assembly, the two supporting columns are adjacently arranged on the side of the movable seat facing away from the side hanger, the two supporting columns are respectively connected to the movable seat through the two guide mechanisms, the lifting plate is mounted on the two supporting columns, the drive assembly is arranged on the movable seat, the two ends of the drive assembly are respectively connected to the two supporting columns, and the flipping device is arranged on the side of the lifting plate away from the drive assembly.

[0009] As described above, a three-chuck bevel pipe cutting system, each of the guide mechanisms includes a fixed seat and a guide rail, the fixed seat is arranged on the movable seat, the guide rail is arranged on any one of the supporting columns, the fixed seat and the guide rail are slidably connected, the driving assembly includes a connecting plate, a driving motor, a gear and a rack, the two ends of the connecting plate are respectively connected to the two supporting columns, the rack is arranged on the movable seat, the driving motor is arranged on the connecting plate, the gear is arranged on the output end of the driving motor, and the gear and the rack are meshed and connected.

[0010] The three-chuck bevel pipe cutting system as described above, the flipping device includes a partition cover, a flange, a rotating column, a driven wheel, a rotating disk, a flipping motor, a driving wheel, a chain and two connecting rods, the partition cover is arranged on the lifting plate, the flange, the driving wheel, the driven wheel and the chain are all arranged in the partition cover, one end of the rotating column passes through the partition cover and is rotatably connected to the flange, the driven wheel is sleeved on the rotating column, the flipping motor is arranged on the side of the lifting plate facing away from the partition cover, the driving wheel is connected to the output end of the flipping motor, the chain is sleeved on the driving wheel and the driven wheel, the rotating disk is arranged on the other end of the rotating column, the two connecting rods are respectively arranged on the side of the rotating disk facing away from the partition cover, and the two connecting rods are both connected to the exhaust hood.

[0011] As described above, a three-chuck bevel pipe cutting system, the exhaust hood includes an outer hood, an inner hood, an air collecting hood and a plurality of partitions, the inner hood is arranged on the inner side of the air inlet end of the outer hood, the air collecting hood is arranged on the air outlet side of the outer hood and is connected to the connecting pipe, the plurality of partitions are respectively arranged on the inner side of the outer hood, the inner hood is provided with a plurality of air inlet hole groups, and the plurality of air inlet hole groups are arranged in sequence in the form of concentric circles along the radial direction of the inner hood.

[0012] In the three-chuck bevel pipe cutting system as described above, each of the partitions is provided with a notch on one end close to the wind collecting hood.

[0013] As described above, in a three-chuck bevel pipe cutting system, the inner cover body includes an outer concave portion and an inner convex portion, the inner convex portion is coaxially arranged at the center of the outer concave portion, the cross-sectional shape of the outer concave portion is trumpet-shaped, and the cross-sectional shape of the inner convex portion is an isosceles trapezoid.

[0014] As described above, a three-chuck bevel pipe cutting system, the dust filtering device includes a filter cartridge, an inner partition, a connecting cylinder and a rotating separation mechanism, the inner partition is arranged in the filter cartridge and forms a buffer chamber and a separation chamber in the filter cartridge, the buffer chamber is connected to the centrifugal fan, the connecting cylinder is passed through the inner partition, the rotating separation mechanism is arranged in the separation chamber, and an exhaust port is provided on the top of the separation chamber.

[0015] As described above, a three-chuck bevel pipe cutting system, the rotating separation mechanism includes a separation motor, an upper turntable, a lower turntable, a primary filter cartridge, a secondary filter cartridge and a tertiary filter cartridge, the separation motor is arranged on the filter cartridge, the upper turntable is arranged on the output end of the separation motor, the lower turntable is rotatably sleeved on the connecting cylinder, the primary filter cartridge, the secondary filter cartridge and the tertiary filter cartridge are coaxially sleeved in sequence, the upper turntable cover is arranged on the top of the primary filter cartridge, the secondary filter cartridge and the tertiary filter cartridge, and the lower turntable cover is arranged on the bottom of the primary filter cartridge, the secondary filter cartridge and the tertiary filter cartridge.

[0016] Beneficial effects:

[0017] The present invention discloses a three-chuck bevel pipe cutting machine, comprising a side hanging frame, a gantry frame, a first chuck, a second chuck, a third chuck, a laser cutting assembly, a follower device, an exhaust dust removal device and a dust filtering device, wherein the first chuck, the second chuck and the third chuck are arranged in sequence on the same side along the length direction of the side hanging frame, and the first chuck, the second chuck and the third chuck are respectively arranged on the side hanging frame for fixing the pipe, the gantry frame connects the laser cutting assembly and the side hanging frame, when the pipe is beveled, the pipe rotates axially and moves radially synchronously relative to the bevel pipe cutting machine, and at the same time, the laser cutting assembly moves following the movement of the pipe, and the exhaust dust removal device is driven by the follower device to move following the end of the pipe, and the exhaust dust removal device inhales the harmful gas and dust generated by cutting and transfers them to the dust filtering device for filtration and then discharges them. The three-chuck bevel pipe cutting system disclosed in the present application can remove the dust generated during cutting to the greatest extent, and reduce the impact of dust on the health of operators and the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of the three-chuck pipe cutting system provided by the present invention;

[0019] Figure 2A schematic structural diagram of the three-chuck pipe cutting system provided by the present invention involving the exhaust and dust removal part;

[0020] Figure 3 An exploded view of the follower device provided by the present invention;

[0021] Figure 4 An exploded view of the follower device provided by the present invention from another angle;

[0022] Figure 5 An exploded view of the exhaust hood provided by the present invention;

[0023] Figure 6 An exploded view of the exhaust hood provided by the present invention from another angle;

[0024] Figure 7 A cross-sectional view of the dust filtering device provided by the present invention;

[0025] Figure numerals: 1, side bracket; 2, gantry; 3, first chuck; 4, second chuck; 5, third chuck; 6, laser cutting assembly; 7, follower; 71, moving seat; 72, lifting device; 73, flip device; 731, partition cover; 732, flange; 733, rotating column; 734, driven wheel; 735, rotating disk; 736, flip motor; 737, driving wheel; 738, chain; 739, connecting rod; 74, lifting plate; 75, supporting column; 76, guide mechanism; 761, fixed seat; 762, guide rail; 77, driving assembly; 771, connecting plate; 772, driving motor Machine; 773, gear; 774, rack; 8, exhaust dust removal device; 81, exhaust hood; 82, connecting pipe; 83, centrifugal fan; 84, outer cover; 85, inner cover; 851, outer concave portion; 852, inner convex portion; 86, wind collecting hood; 87, partition; 88, air inlet hole group; 89, missing corner; 9, dust filtering device; 91, filter cartridge; 92, inner partition; 93, connecting cylinder; 94, rotary separation mechanism; 941, separation motor; 942, upper turntable; 943, lower turntable; 944, primary filter cartridge; 945, secondary filter cartridge; 946, tertiary filter cartridge; 95, buffer chamber; 96, separation chamber. DETAILED DESCRIPTION

[0026] The present invention provides a three-chuck bevel pipe cutting system. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0027] In the description of the present invention, it should be understood that the orientation or position relationship indicated by the term "top" is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and cannot be understood as a limitation of the present invention; in addition, the terms "installation" and "connection" should be understood in a broad sense. For ordinary technicians in this field, they can understand the specific meaning of the above terms in the present invention according to specific circumstances.

[0028] like Figure 1-3 As shown, an embodiment of the present application proposes a three-chuck bevel pipe cutting system, including a side hanger 1, a gantry 2, a first chuck 3, a second chuck 4, a third chuck 5, a laser cutting assembly 6, a follower 7, an exhaust dust removal device 8 and a dust filtering device 9, wherein the first chuck 3, the second chuck 4 and the third chuck 5 are sequentially arranged on the same side along the length direction of the side hanger 1, the gantry 2 is arranged on the side hanger 1, the laser cutting assembly 6 is arranged on the gantry 2, the follower 7 is adjacent to the gantry 2 and is arranged on the side hanger 1, the exhaust dust removal device 8 and the dust filtering device 9 are respectively arranged on the follower 7, and the exhaust dust removal device 8 and the dust filtering device 9 are connected.

[0029] The present invention discloses a three-chuck beveling pipe cutting machine, comprising a side hanger 1, a gantry 2, a first chuck 3, a second chuck 4, a third chuck 5, a laser cutting assembly 6, a follower 7, an exhaust dust removal device 8 and a dust filter 9. The first chuck 3, the second chuck 4 and the third chuck 5 are sequentially arranged on the same side along the length direction of the side hanger 1. The first chuck 3, the second chuck 4 and the third chuck 5 are respectively arranged on the side hanger 1 for fixing the pipe. The gantry 2 connects the laser cutting assembly 6 and the side hanger 1. When beveling the pipe, the pipe rotates axially and moves radially synchronously relative to the beveling pipe cutting machine. At the same time, the laser cutting assembly 6 moves along with the movement of the pipe, and the exhaust dust removal device 8 is driven by the follower device 7 to move along with the end of the pipe. The exhaust dust removal device 8 inhales the harmful gases and dust generated by the cutting and transfers them to the dust filter device 9 for filtration and discharge. The three-chuck bevel pipe cutting system disclosed in this application can remove the dust generated during cutting to the greatest extent, reducing the impact of dust on the health of operators and the environment.

[0030] The following device 7 includes a moving seat 71, a lifting device 72 and a flipping device 73. The moving seat 71 is slidably arranged on the side hanging frame 1. The lifting device 72 is arranged on the moving seat 71. The flipping device 73 is arranged on the same side of the lifting device 72 relative to the first chuck 3. The exhaust dust removal device 8 includes an exhaust hood 81, a connecting pipe 82 and a centrifugal fan 83. The exhaust hood 81 is arranged on the side of the flipping device 73 away from the lifting device 72. The centrifugal fan 83 is arranged on the moving seat 71. The two ends of the connecting pipe 82 are respectively connected to the exhaust hood 81 and the centrifugal fan 83, and the dust filtering device 9 is connected to the centrifugal fan 83. When the cutting angle of the laser cutting assembly 6 changes, the harmful gases and dust generated by the cutting are ejected toward different angles. The exhaust hood 81 is driven close to or away from the end of the pipe by the movable seat 71, and cooperates with the lifting device 72 and the flipping device 73 to enable the exhaust hood 81 to flexibly adapt to the position and angle changes during the pipe cutting process, thereby enhancing the effect of exhaust and dust removal.

[0031] The lifting device 72 includes a lifting plate 74, two supporting columns 75, two guide mechanisms 76 and a drive assembly 77. The two supporting columns 75 are adjacently arranged on the side of the moving seat 71 facing away from the side hanger 1. The two supporting columns 75 are connected to the moving seat 71 through the two guide mechanisms 76 respectively. The lifting plate 74 is mounted on the two supporting columns 75. The drive assembly 77 is arranged on the moving seat 71. The two ends of the drive assembly 77 are respectively connected to the two supporting columns 75. The flip device 73 is arranged on the side of the lifting plate 74 away from the drive assembly 77. The cooperation of the two guide mechanisms 76 and the two supporting columns 75 ensures the stability of the lifting plate 74 during the lifting process, thereby preventing the lifting plate 74 from shaking or deflecting during the movement, thereby affecting the exhaust and dust removal effect of the exhaust hood 81. The two ends of the connecting plate 771 are connected to the two supporting columns 75 respectively, and the rack 774 is provided on the moving seat 71, and the driving motor 772 is provided on the connecting plate 771. The gear 773 is provided on the output end of the driving motor 772, and the gear 773 and the rack 774 are meshed and connected. Through the meshing transmission of the gear 773 and the rack 774, the lifting height of the lifting plate 74 can be accurately controlled, and the lifting stability is improved, which is not easy to slip.

[0032] The flip device 73 includes a partition cover 731, a flange 732, a rotating column 733, a driven wheel 734, a rotating disk 735, a flip motor 736, a driving wheel 737, a chain 738 and two connecting rods 739. The partition cover 731 is arranged on the lifting plate 74, and the flange 732, the driving wheel 737, the driven wheel 734 and the chain 738 are all arranged in the partition cover 731. One end of the rotating column 733 passes through the partition cover 73 1 is rotatably connected to the flange 732, the driven wheel 734 is sleeved on the rotating column 733, the flip motor 736 is provided on the side of the lifting plate 74 facing away from the separation cover 731, the driving wheel 737 is connected to the output end of the flip motor 736, the chain 738 is sleeved on the driving wheel 737 and the driven wheel 734, the rotating disk 735 is provided on the other end of the rotating column 733, and the two connecting rods 739 are respectively provided On the side of the rotating disk 735 facing away from the separation cover 731, the two connecting rods 739 are connected to the exhaust hood 81. In actual application, when the cutting angle of the laser cutting assembly 6 is tilted toward the opening of the pipe cutting position, the optimal position of the exhaust hood 81 is located obliquely below the opening of the pipe cutting position, that is, parallel to the cutting angle of the laser cutting assembly 6; when the cutting angle of the laser cutting assembly 6 is tilted inward toward the opening of the pipe cutting position, the optimal position of the exhaust hood 81 is located parallel to the pipe. In this application, the flange 732 is used to effectively clamp the rotating column 733 and limit its rotation. The driving wheel 737 drives the driven wheel 734 to rotate through the chain 738, thereby driving the rotating column 733 and the rotating disk 735 to rotate, so that the exhaust hood 81 maintains the optimal relative position with the pipe cutting area, thereby maximizing the dust collection effect.

[0033] The exhaust hood 81 includes an outer cover 84, an inner cover 85, an air collecting hood 86 and a plurality of partitions 87. The inner cover 85 is arranged on the inner side of the air inlet end of the outer cover 84, and the air collecting hood 86 is arranged on the air outlet side of the outer cover 84 and is connected to the connecting pipe 82. The plurality of partitions 87 are respectively arranged on the inner side of the outer cover 84, and the inner cover 85 is provided with a plurality of air inlet hole groups 88. The plurality of air inlet hole groups 88 are arranged in sequence in the form of concentric circles along the radial direction of the inner cover 85. By providing a plurality of partitions 87, two adjacent partitions 87 and the outer cover 84 and the inner cover 85 form a small negative pressure cavity, which effectively increases the negative pressure effect relative to the large cavity formed by the outer cover 84 and the inner cover 85, and further optimizes the exhaust and dust removal effect.

[0034] Each of the partitions 87 is provided with a notch 89 on one end close to the wind collecting hood 86. When the notch 89 is not provided, the connection between the cavity formed by the two adjacent partitions 87 and the wind collecting hood 86 is limited by the size of the air outlet of the outer cover 84. By providing the notch 89, each notch 89 forms a cavity at the air inlet end of the wind collecting hood 86. On the one hand, the size of the connection between the cavity formed by the two adjacent partitions 87 and the wind collecting hood 86 is increased. On the other hand, the turbulence caused by the collision of airflows can be avoided to affect the airflow distribution.

[0035] The inner cover body 85 includes an outer concave portion 851 and an inner convex portion 852. The inner convex portion 852 is coaxially arranged at the center of the outer concave portion 851. The cross-sectional shape of the outer concave portion 851 is trumpet-shaped, and the cross-sectional shape of the inner convex portion 852 is an isosceles trapezoid. While increasing the air inlet area, different flow velocities of strong-weak-strong are formed in sequence from the center of the exhaust hood 81 toward the outside, thereby improving the dust removal effect.

[0036] The dust filtering device 9 includes a filter cartridge 91, an inner partition 92, a connecting cylinder 93 and a rotating separation mechanism 94. The inner partition 92 is arranged in the filter cartridge 91 and forms a buffer chamber 95 and a separation chamber 96 in the filter cartridge 91. The buffer chamber 95 is communicated with the centrifugal fan 83. The connecting cylinder 93 is passed through the inner partition 92. The rotating separation mechanism 94 is arranged in the separation chamber 96. An exhaust port is provided on the top of the separation chamber 96. The rotating separation mechanism 94 includes a separation motor 941, an upper turntable 942, a lower turntable 943, a primary filter cartridge 944, a secondary filter cartridge 945 and a tertiary filter cartridge 946. The separation motor 941 is arranged on the filter cartridge 91. The upper turntable 942 is provided with a At the output end of the separation motor 941, the lower turntable 943 is rotatably sleeved on the connecting cylinder 93, and the primary filter cylinder 944, the secondary filter cylinder 945 and the tertiary filter cylinder 946 are coaxially sleeved in sequence. The upper turntable 942 is covered on the top of the primary filter cylinder 944, the secondary filter cylinder 945 and the tertiary filter cylinder 946, and the lower turntable 943 is covered on the bottom of the primary filter cylinder 944, the secondary filter cylinder 945 and the tertiary filter cylinder 946. The impact force of the gas is slowed down by the buffer chamber 95, so that the gas can pass into the rotating separation mechanism 94 relatively smoothly, and the dust separation effect is improved through multi-stage filtration and centrifugal force.

[0037] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the scope of protection of the present invention.

Claims

1. A three-chuck bevel cutting system, characterized in that: The invention comprises a side hanging frame (1), a gantry frame (2), a first chuck (3), a second chuck (4), a third chuck (5), a laser cutting assembly (6), a follower device (7), an exhaust dust removal device (8) and a dust filtering device (9), wherein the first chuck (3), the second chuck (4) and the third chuck (5) are sequentially arranged on the same side along the length direction of the side hanging frame (1), the gantry frame (2) is arranged on the side hanging frame (1), the laser cutting assembly (6) is arranged on the gantry frame (2), the follower device (7) is adjacent to the gantry frame (2) and is arranged on the side hanging frame (1), the exhaust dust removal device (8) and the dust filtering device (9) are respectively arranged on the follower device (7), and the exhaust dust removal device (8) and the dust filtering device (9) are connected.

2. A three-chuck bevel pipe cutting system according to claim 1, characterized in that: The following device (7) includes a moving seat (71), a lifting device (72) and a flipping device (73); the moving seat (71) is slidably arranged on the side hanging frame (1); the lifting device (72) is arranged on the moving seat (71); the flipping device (73) is arranged on one side of the lifting device (72) relative to the first chuck (3); the exhaust dust removal device (8) includes an exhaust hood (81), a connecting pipe (82) and a centrifugal fan (83); the exhaust hood (81) is arranged on the side of the flipping device (73) away from the lifting device (72); the centrifugal fan (83) is arranged on the moving seat (71); the two ends of the connecting pipe (82) are respectively connected to the exhaust hood (81) and the centrifugal fan (83); the dust filtering device (9) is connected to the centrifugal fan (83).

3. A three-chuck bevel pipe cutting system according to claim 2, characterized in that: The lifting device (72) includes a lifting plate (74), two supporting columns (75), two guiding mechanisms (76) and a driving assembly (77). The two supporting columns (75) are adjacently arranged on a side of the movable seat (71) facing away from the side hanging frame (1). The two supporting columns (75) are respectively connected to the movable seat (71) through the two guiding mechanisms (76). The lifting plate (74) is mounted on the two supporting columns (75). The driving assembly (77) is arranged on the movable seat (71). The two ends of the driving assembly (77) are respectively connected to the two supporting columns (75). The flipping device (73) is arranged on a side of the lifting plate (74) away from the driving assembly (77).

4. A three-chuck bevel pipe cutting system according to claim 3, characterized in that: Each of the guide mechanisms (76) comprises a fixed seat (761) and a guide rail (762), wherein the fixed seat (761) is arranged on the movable seat (71), and the guide rail (762) is arranged on any one of the supporting columns (75). The fixed seat (761) and the guide rail (762) are slidably connected. The driving assembly (77) comprises a connecting plate (771), a driving motor (772), a gear (773) and a rack (774), wherein both ends of the connecting plate (771) are respectively connected to the two supporting columns (75), the rack (774) is arranged on the movable seat (71), the driving motor (772) is arranged on the connecting plate (771), the gear (773) is arranged on the output end of the driving motor (772), and the gear (773) and the rack (774) are meshed and connected.

5. The three-chuck bevel pipe cutting system according to claim 3, characterized in that: The turning device (73) comprises a partition cover (731), a flange (732), a rotating column (733), a driven wheel (734), a rotating disk (735), a turning motor (736), a driving wheel (737), a chain (738) and two connecting rods (739). The partition cover (731) is arranged on the lifting plate (74). The flange (732), the driving wheel (737), the driven wheel (734) and the chain (738) are all arranged in the partition cover (731). One end of the rotating column (733) passes through the partition cover (731) and is rotatably connected to the flange (732). The driven wheel (737) is connected to the rotating disk (735). The wheel (734) is sleeved on the rotating column (733), the flip motor (736) is arranged on the side of the lifting plate (74) facing away from the partition cover (731), the driving wheel (737) is connected to the output end of the flip motor (736), the chain (738) is sleeved on the driving wheel (737) and the driven wheel (734), the rotating disk (735) is arranged on the other end of the rotating column (733), the two connecting rods (739) are respectively arranged on the side of the rotating disk (735) facing away from the partition cover (731), and the two connecting rods (739) are both connected to the exhaust hood (81).

6. The three-chuck bevel pipe cutting system according to claim 2, characterized in that: The exhaust hood (81) comprises an outer hood (84), an inner hood (85), an air collecting hood (86) and a plurality of partitions (87); the inner hood (85) is arranged on the inner side of the air inlet end of the outer hood (84); the air collecting hood (86) is arranged on the air outlet side of the outer hood (84) and is connected to the connecting pipe (82); the plurality of partitions (87) are respectively arranged on the inner side of the outer hood (84); the inner hood (85) is provided with a plurality of air inlet hole groups (88); the plurality of air inlet hole groups (88) are sequentially arranged in a concentric circle along the radial direction of the inner hood (85).

7. The three-chuck bevel pipe cutting system according to claim 6, characterized in that: Each of the partitions (87) is provided with a notch (89) on one end close to the wind collecting cover (86).

8. The three-chuck bevel pipe cutting system according to claim 6, characterized in that: The inner cover (85) comprises an outer concave portion (851) and an inner convex portion (852), wherein the inner convex portion (852) is coaxially arranged at the center of the outer concave portion (851), the cross-section of the outer concave portion (851) is trumpet-shaped, and the cross-section of the inner convex portion (852) is an isosceles trapezoid.

9. The three-chuck bevel pipe cutting system according to claim 2, characterized in that: The dust filtering device (9) comprises a filter cartridge (91), an inner partition (92), a connecting cylinder (93) and a rotating separation mechanism (94); the inner partition (92) is arranged in the filter cartridge (91) and forms a buffer chamber (95) and a separation chamber (96) in the filter cartridge (91); the buffer chamber (95) is communicated with the centrifugal fan (83); the connecting cylinder (93) is passed through the inner partition (92); the rotating separation mechanism (94) is arranged in the separation chamber (96); and an exhaust port is provided on the top of the separation chamber (96).

10. The three-chuck bevel pipe cutting system according to claim 9, characterized in that: The rotary separation mechanism (94) comprises a separation motor (941), an upper turntable (942), a lower turntable (943), a primary filter cartridge (944), a secondary filter cartridge (945) and a tertiary filter cartridge (946), wherein the separation motor (941) is arranged on the filter cartridge (91), the upper turntable (942) is arranged on the output end of the separation motor (941), and the lower turntable (943) is rotatably sleeved on the connecting cartridge (93). The first-stage filter cartridge (944), the second-stage filter cartridge (945) and the third-stage filter cartridge (946) are coaxially sleeved in sequence, the upper turntable (942) is covered on the top of the first-stage filter cartridge (944), the second-stage filter cartridge (945) and the third-stage filter cartridge (946), and the lower turntable (943) is covered on the bottom of the first-stage filter cartridge (944), the second-stage filter cartridge (945) and the third-stage filter cartridge (946).

Images