Seamless steel tube end face chamfering machine

Abstract

The utility model relates to the technical field of steel pipe machining, in particular to a seamless steel pipe end face chamfering machine which can be suitable for chamfering pipelines with different diameters, widens the application range of the device, and can collect and process sweeps generated by chamfering to prevent the sweeps from splashing. Comprising a feeding and discharging mechanism; the seamless steel pipe chamfering machine further comprises two lifting mechanisms, a transmission mechanism, a collecting mechanism, a chamfering mechanism and a blowing mechanism, the two lifting mechanisms are installed on the feeding and discharging mechanism and lift the seamless steel pipe, the transmission mechanism is installed on the feeding and discharging mechanism and drives the seamless steel pipe to move, and the collecting mechanism is installed on the feeding and discharging mechanism and conveniently collects waste scraps. The chamfering mechanism is mounted on the collecting mechanism and is used for chamfering the seamless steel pipe; and the purging mechanism is mounted on the chamfering mechanism and is used for purging sweeps.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a seamless steel pipe end chamfering machine. Background Technique

[0002] During the steel pipe processing, it is usually necessary to cut the steel pipe to obtain a steel pipe with appropriate dimensions. Due to problems such as uneven or beveled cutting surfaces of the steel pipe, and a large number of burrs are likely to exist on the cutting surface of the steel pipe, it is necessary to chamfer the cutting end of the steel pipe through a chamfering machine during the steel pipe processing.

[0003] For the existing seamless steel pipe end chamfering machine, for example, a seamless steel pipe processing chamfering machine disclosed in the utility model patent with the application number of 202320099264.1, its main structure includes a tabletop and two chamfering heads. Both chamfering heads are fixedly installed on the top of the tabletop. There are two side plates fixedly installed on the top of the tabletop. On one side of the two opposite side plates, there are two electric push rods penetrating the side plates. The output end of the electric push rod is fixedly installed with a chuck. A classification and collection component is arranged at the bottom of the tabletop; during use, the seamless steel pipe to be processed is pushed by the electric push rod after the output shaft extends to clamp and fix the chuck, and then the chamfering heads are used to chamfer both ends of the steel pipe. After the processing is completed, by controlling the contraction of the output shaft of the electric push rod, the steel pipe falls into the guide pipe under the action of gravity. Among them, the waste generated during the processing enters the guide pipe first and falls straight into the classification storage box directly below, and the steel pipe that falls later slides towards the opening and closing door due to the guiding of the guide plate and the guide strip, and pushes the opening and closing door under the action of gravity, and falls into another classification storage box along the guide groove.

[0004] However, most of the existing chamfering machines can only chamfer seamless steel pipes with the same diameter, and the applicable range is relatively narrow. Moreover, the waste chips generated during the chamfering process fly everywhere and are very likely to injure the staff. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a seamless steel pipe end chamfering machine that can not only be applicable to the chamfering of pipes with different diameters, expanding the use range of the device, but also can collect and process the waste chips generated by chamfering to avoid the flying of waste chips.

[0006] A seamless steel pipe end chamfering machine of the utility model includes a loading and unloading mechanism; it also includes two groups of lifting mechanisms, a transmission mechanism, a collection mechanism, a chamfering mechanism and a purging mechanism. The two groups of lifting mechanisms are installed on the loading and unloading mechanism and lift the seamless steel pipe. The transmission mechanism is installed on the loading and unloading mechanism and drives the seamless steel pipe to move. The collection mechanism is installed on the loading and unloading mechanism and is convenient for collecting waste chips. The chamfering mechanism is installed on the collection mechanism and chamfers the seamless steel pipe. The purging mechanism is installed on the chamfering mechanism and purges the waste chips; the loading and unloading mechanism drives the steel pipe to be loaded, then the two groups of lifting mechanisms lift the seamless steel pipe, the transmission mechanism transports one end of the seamless steel pipe into the collection mechanism, the lifting mechanism drives the seamless steel pipe to rotate, the chamfering mechanism is started, the chamfering mechanism chamfers the cross section of the seamless steel pipe, and at the same time the chamfering mechanism drives the purging mechanism to purge the waste chips, the waste chips fall into the collection mechanism for collection. After chamfering is completed, the transmission mechanism pulls out the steel pipe from the collection mechanism, the two groups of lifting mechanisms drive the steel pipe to descend, and the loading and unloading mechanism drives the chamfered steel pipe to be unloaded.

[0007] Preferably, the loading and unloading mechanism includes a working frame, a first stepping motor, a first reducer, a rotating shaft, two groups of turntables and multiple groups of limiting rods. The bottom end of the working frame is connected to the ground. The first stepping motor is installed on the working frame. The first reducer is installed on the first stepping motor. The rotating shaft is rotatably installed on the working frame and is longitudinally connected to the first reducer. The two groups of turntables are both installed on the rotating shaft. The multiple groups of limiting rods are respectively installed on the two groups of turntables; the first stepping motor is started, the first stepping motor drives the rotating shaft to rotate through the first reducer, the seamless steel pipe is transported between two adjacent groups of limiting rods, the two groups of limiting rods drive the seamless steel pipe to rotate to the highest point and then stop. When the two groups of lifting mechanisms place the seamless steel pipe on the turntable again, the first stepping motor is started again, the first stepping motor drives the rotating shaft and the two groups of turntables to rotate, and the two groups of turntables drive the seamless steel pipe to be discharged from the other side and transport a new seamless steel pipe to the highest point.

[0008] Preferably, the lifting mechanism includes two groups of hydraulic cylinders and a small conveyor. The two groups of hydraulic cylinders are both installed on the working frame. The bottom end of the small conveyor is connected to the top ends of the two groups of hydraulic cylinders. The two groups of lifting mechanisms are both installed on the working frame; the two groups of hydraulic cylinders push the small conveyor upward, the small conveyor pushes the seamless steel pipe upward, so that the bottom end of the seamless steel pipe is separated from the two groups of turntables and the top end of the seamless steel pipe abuts against the transmission mechanism. When the transmission mechanism transports one end of the seamless steel pipe into the collection mechanism, the two groups of small conveyors are started to drive the seamless steel pipe to rotate, which is convenient for the chamfering mechanism to chamfer the seamless steel pipe. After chamfering is completed, the two groups of lifting mechanisms drive the seamless steel pipe to return to the two groups of turntables again.

[0009] Preferably, the transmission mechanism includes a second stepping motor, a second speed reducer, two groups of conveyor rollers, two groups of first belt pulleys and a first belt. The second stepping motor is installed on the working frame, the second speed reducer is installed on the working frame, the two groups of conveyor rollers are rotatably installed on the working frame and one of the groups is longitudinally connected to the second speed reducer. The two groups of first belt pulleys are respectively installed on the two groups of conveyor rollers, and the first belt is tensioned and installed between the two groups of first belt pulleys. When the second stepping motor is started, the second stepping motor drives the conveyor roller connected thereto to rotate through the second speed reducer. The conveyor roller drives the other conveyor roller to rotate through the two groups of first belt pulleys and the first belt. The two groups of conveyor rollers drive one end of the seamless steel pipe into the collection mechanism, which facilitates the chamfering mechanism to chamfer the seamless steel pipe. After chamfering, the second stepping motor is started in the reverse direction to drive the seamless steel pipe to reset.

[0010] Preferably, the collection mechanism includes a dust-proof cover, a soft curtain, a drawer and a handle. The dust-proof cover is installed on the working frame, the soft curtain is installed at the connection between the working frame and the dust-proof cover. There is a discharge port on the dust-proof cover. The drawer is slidably installed at the discharge port of the dust-proof cover, and the handle is installed on the drawer. The seamless steel pipe passes through the soft curtain and enters the interior of the dust-proof cover. By setting the dust-proof cover and the soft curtain, the waste chips generated during the chamfering process by the chamfering mechanism are prevented from splashing. The waste chips fall into the drawer for collection. After long-term collection, the handle is pulled to draw out the drawer.

[0011] Preferably, the chamfering mechanism includes a motor, a third speed reducer, a first transmission shaft, a connecting shaft, a chamfering head, two groups of second belt pulleys and a second belt. The bottom end of the motor is connected to the top end of the working frame, the bottom end of the third speed reducer is connected to the top end of the working frame. The first transmission shaft is rotatably installed on the dust-proof cover and connected to the third speed reducer. The connecting shaft is rotatably installed inside the dust-proof cover, the chamfering head is installed on the connecting shaft. The two groups of second belt pulleys are respectively installed on the first transmission shaft and the connecting shaft, and the second belt is tensioned and installed between the two groups of second belt pulleys. When the motor is started, the motor drives the first transmission shaft to rotate through the third speed reducer. The first transmission shaft drives the connected second belt pulley to rotate. The second belt pulley drives the other second belt pulley and the connecting shaft to rotate through the second belt. The connecting shaft drives the chamfering head to rotate to chamfer the end face of the seamless steel pipe.

[0012] Preferably, the purging mechanism includes a second transmission shaft, a pump body, an air suction pipe, an air delivery pipe and two groups of high-pressure nozzles. The second transmission shaft is installed on the third speed reducer, the bottom end of the pump body is connected to the top end of the working frame, the air suction pipe is installed on the pump body, the air delivery pipe is installed on the pump body. The two groups of high-pressure nozzles are both installed inside the dust-proof cover and communicated with the interior of the air delivery pipe. When the motor is started, the motor drives the first transmission shaft to rotate through the third speed reducer. The first transmission shaft drives the connected second belt pulley to rotate. The second belt pulley drives the other second belt pulley and the connecting shaft to rotate through the second belt. The connecting shaft drives the chamfering head to rotate to chamfer the end face of the seamless steel pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The loading and unloading mechanism drives the steel pipe to be loaded, and then the two sets of lifting mechanisms lift the seamless steel pipe. The transmission mechanism conveys one end of the seamless steel pipe into the collection mechanism. The lifting mechanism drives the seamless steel pipe to rotate, and the chamfering mechanism is started. The chamfering mechanism chamfers the cross-section of the seamless steel pipe. At the same time, the chamfering mechanism drives the purging mechanism to purge the waste chips. The waste chips fall into the collection mechanism for collection. After chamfering, the transmission mechanism extracts the steel pipe from the collection mechanism. The two sets of lifting mechanisms drive the steel pipe to descend, and the loading and unloading mechanism drives the chamfered steel pipe to be unloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an isometric structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view structural schematic diagram of the loading and unloading mechanism of the present utility model;

[0016] Figure 3 is a sectional isometric structural schematic diagram of the lifting mechanism and the transmission mechanism of the present utility model;

[0017] Figure 4 is a top view sectional structural schematic diagram of the transmission mechanism of the present utility model;

[0018] Figure 5 is a partial enlarged sectional isometric structural schematic diagram of the collection mechanism, the chamfering mechanism and the purging mechanism of the present utility model;

[0019] Figure 6 is a partial enlarged isometric structural schematic diagram of the chamfering mechanism and the purging mechanism of the present utility model.

[0020] Reference numerals in the drawings: 01, loading and unloading mechanism; 11, working frame; 12, first stepping motor; 13, first reduction gear; 14, rotating shaft; 15, turntable; 16, limiting rod; 02, lifting mechanism; 21, hydraulic cylinder; 22, small conveyor; 03, conveying mechanism; 31, second stepping motor; 32, second reduction gear; 33, conveying roller; 34, first pulley; 35, first belt; 04, collection mechanism; 41, dust-proof cover; 42, soft curtain; 43, drawer; 44, handle; 05, chamfering mechanism; 51, motor; 52, third reduction gear; 53, first transmission shaft; 54, connecting shaft; 55, chamfering head; 56, second pulley; 57, second belt; 06, purging mechanism; 61, second transmission shaft; 62, pump body; 63, suction pipe; 64, delivery pipe; 65, high-pressure nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0022] Embodiment 1

[0023] A seamless steel pipe end chamfering machine of the utility model includes a loading and unloading mechanism 01; it also includes two groups of lifting mechanisms 02, a transmission mechanism 03, a collection mechanism 04, a chamfering mechanism 05 and a purging mechanism 06. The two groups of lifting mechanisms 02 are installed on the loading and unloading mechanism 01 and lift the seamless steel pipe. The transmission mechanism 03 is installed on the loading and unloading mechanism 01 and drives the seamless steel pipe to move. The collection mechanism 04 is installed on the loading and unloading mechanism 01 and is convenient for collecting waste chips. The chamfering mechanism 05 is installed on the collection mechanism 04 and chamfers the seamless steel pipe. The purging mechanism 06 is installed on the chamfering mechanism 05 and purges the waste chips; the loading and unloading mechanism 01 includes a working frame 11, a first stepping motor 12, a first reduction gear 13, a rotating shaft 14, two groups of turntables 15 and multiple groups of limiting rods 16. The bottom end of the working frame 11 is connected to the ground. The first stepping motor 12 is installed on the working frame 11. The first reduction gear 13 is installed on the first stepping motor 12. The rotating shaft 14 is rotatably installed on the working frame 11 and is longitudinally connected to the first reduction gear 13. The two groups of turntables 15 are both installed on the rotating shaft 14. The multiple groups of limiting rods 16 are respectively installed on the two groups of turntables 15; the lifting mechanism 02 includes two groups of hydraulic cylinders 21 and a small conveyor 22. The two groups of hydraulic cylinders 21 are both installed on the working frame 11. The bottom end of the small conveyor 22 is connected to the top ends of the two groups of hydraulic cylinders 21. The two groups of lifting mechanisms 02 are both installed on the working frame 11; the transmission mechanism 03 includes a second stepping motor 31, a second reduction gear 32, two groups of conveyor rollers 33, two groups of first belt pulleys 34 and a first belt 35. The second stepping motor 31 is installed on the working frame 11. The second reduction gear 32 is installed on the working frame 11. The two groups of conveyor rollers 33 are both rotatably installed on the working frame 11 and one of them is longitudinally connected to the second reduction gear 32. The two groups of first belt pulleys 34 are respectively installed on the two groups of conveyor rollers 33. The first belt 35 is tensioned and installed between the two groups of first belt pulleys 34; the collection mechanism 04 includes a dust-proof cover 41, a soft curtain 42, a drawer 43 and a handle 44. The dust-proof cover 41 is installed on the working frame 11. The soft curtain 42 is installed at the connection between the working frame 11 and the dust-proof cover 41. A discharge port is opened on the dust-proof cover 41. The drawer 43 is slidably installed at the discharge port of the dust-proof cover 41. The handle 44 is installed on the drawer 43; the chamfering mechanism 05 includes a motor 51, a third reduction gear 52, a first transmission shaft 53, a connecting shaft 54, a chamfering head 55, two groups of second belt pulleys 56 and a second belt 57. The bottom end of the motor 51 is connected to the top end of the working frame 11. The bottom end of the third reduction gear 52 is connected to the top end of the working frame 11. The first transmission shaft 53 is rotatably installed on the dust-proof cover 41 and is connected to the third reduction gear 52. The connecting shaft 54 is rotatably installed inside the dust-proof cover 41. The chamfering head 55 is installed on the connecting shaft 54. The two groups of second belt pulleys 56 are respectively installed on the first transmission shaft 53 and the connecting shaft 54. The second belt 57 is tensioned and installed between the two groups of second belt pulleys 56;When it is working, first, start the first stepping motor 12. The first stepping motor 12 drives the rotating shaft 14 to rotate through the first speed reducer 13. The seamless steel pipe is conveyed between two adjacent groups of limiting rods 16. The two groups of limiting rods 16 drive the seamless steel pipe to rotate to the highest point and then stop. The two hydraulic cylinders 21 push the small conveyor 22 upward. The small conveyor 22 pushes the seamless steel pipe upward, so that the bottom end of the seamless steel pipe is separated from the two turntables 15 and the top end of the seamless steel pipe abuts against the conveying roller 33. Start the second stepping motor 31. The second stepping motor 31 drives the connected conveying roller 33 to rotate through the second speed reducer 32. The conveying roller 33 drives another conveying roller 33 to rotate through two groups of first belt pulleys 34 and the first belt 35. The two groups of conveying rollers 33 drive the seamless steel pipe to pass through the soft curtain 42 and enter the inside of the dust-proof cover 41. Start the two small conveyors 22 to drive the seamless steel pipe to rotate. Start the motor 51. The motor 51 drives the first transmission shaft 53 to rotate through the third speed reducer 52. The first transmission shaft 53 drives the connected second belt pulley 56 to rotate. The second belt pulley 56 drives another group of second belt pulleys 56 and the connecting shaft 54 to rotate through the second belt 57. The connecting shaft 54 drives the chamfering head 55 to rotate to chamfer the end face of the seamless steel pipe. By setting the dust-proof cover 41 and the soft curtain 42, the waste chips generated during the chamfering process of the chamfering mechanism 05 are prevented from splashing. The waste chips fall into the drawer 43 for collection. After long-term collection, pull the handle 44 to draw out the drawer 43. After chamfering, the second stepping motor 31 is started in reverse to drive the seamless steel pipe to reset. The two lifting mechanisms 02 drive the seamless steel pipe to return to the two turntables 15 again. Start the first stepping motor 12 again. The first stepping motor 12 drives the rotating shaft 14 and the two turntables 15 to rotate. The two turntables 15 drive the seamless steel pipe to be discharged from the other side and convey the new seamless steel pipe to the highest point.;

[0024] Embodiment 2

[0025] As Figures 1 to 6As shown in the figure, a seamless steel pipe end chamfering machine of the present utility model is based on Embodiment 1; the purging mechanism 06 includes a second transmission shaft 61, a pump body 62, an air suction pipe 63, an air delivery pipe 64 and two groups of high-pressure nozzles 65. The second transmission shaft 61 is installed on the third speed reducer 52. The bottom end of the pump body 62 is connected to the top end of the working frame 11. The air suction pipe 63 is installed on the pump body 62. The air delivery pipe 64 is installed on the pump body 62. The two groups of high-pressure nozzles 65 are both installed in the dust-proof cover 41 and are internally communicated with the air delivery pipe 64. When it works, first, start the first stepping motor 12. The first stepping motor 12 drives the rotating shaft 14 to rotate through the first speed reducer 13. The seamless steel pipe is conveyed between two adjacent limiting rods 16. The two groups of limiting rods 16 drive the seamless steel pipe to rotate to the highest point and then stop. The two groups of hydraulic cylinders 21 push the small conveyor 22 upward. The small conveyor 22 pushes the seamless steel pipe upward, so that the bottom end of the seamless steel pipe is separated from the two groups of turntables 15 and the top end of the seamless steel pipe abuts against the conveying roller 33. Start the second stepping motor 31. The second stepping motor 31 drives the connected conveying roller 33 to rotate through the second speed reducer 32. The conveying roller 33 drives another conveying roller 33 to rotate through two groups of first belt pulleys 34 and the first belt 35. The two groups of conveying rollers 33 drive the seamless steel pipe to pass through the soft curtain 42 and enter the inside of the dust-proof cover 41. Start the two groups of small conveyors 22 to drive the seamless steel pipe to rotate. Start the motor 51. The motor 51 drives the first transmission shaft 53 to rotate through the third speed reducer 52. The first transmission shaft 53 drives the connected second belt pulley 56 to rotate. The second belt pulley 56 drives another second belt pulley 56 and the connecting shaft 54 to rotate through the second belt 57. The connecting shaft 54 drives the chamfering head 55 to rotate to chamfer the end face of the seamless steel pipe. At the same time, the third speed reducer 52 drives the second transmission shaft 61 to rotate. The second transmission shaft 61 drives the pump body 62 to draw air. The pump body 62 draws in external air through the air suction pipe 63, and then conveys the air to the two groups of high-pressure nozzles 65 through the air delivery pipe 64. The two groups of high-pressure nozzles 65 spray out the air to purge the chamfering head 55 and the seamless steel pipe to avoid waste chips remaining. By setting the dust-proof cover 41 and the soft curtain 42, the waste chips generated during the chamfering process of the chamfering mechanism 05 are prevented from splashing. The waste chips fall into the drawer 43 for collection. After long-term collection, pull the handle 44 to draw out the drawer 43. After chamfering is completed, the second stepping motor 31 starts in reverse to drive the seamless steel pipe to reset. The two groups of lifting mechanisms 02 drive the seamless steel pipe to return to the two groups of turntables 15 again. Start the first stepping motor 12 again. The first stepping motor 12 drives the rotating shaft 14 and the two groups of turntables 15 to rotate. The two groups of turntables 15 drive the seamless steel pipe to be discharged from the other side and convey a new seamless steel pipe to the highest point.

[0026] The first stepping motor 12, the first speed reducer 13, the second stepping motor 31, the second speed reducer 32, the motor 51, the third speed reducer 52 and the pump body 62 of the present utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the attached operation manuals, without the need for technicians in this field to perform creative labor.

[0027] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A seamless steel pipe end chamfering machine, including a loading and unloading mechanism (01); characterized in that, It also includes two sets of lifting mechanisms (02), a transmission mechanism (03), a collection mechanism (04), a chamfering mechanism (05) and a purging mechanism (06). The two sets of lifting mechanisms (02) are installed on the loading and unloading mechanism (01) and lift the seamless steel pipe. The transmission mechanism (03) is installed on the loading and unloading mechanism (01) and drives the seamless steel pipe to move. The collection mechanism (04) is installed on the loading and unloading mechanism (01) and facilitates the collection of waste chips. The chamfering mechanism (05) is installed on the collection mechanism (04) and chamfers the seamless steel pipe. The purging mechanism (06) is installed on the chamfering mechanism (05) and purges the waste chips.

2. The seamless steel pipe end chamfering machine according to claim 1, characterized in that The loading and unloading mechanism (01) includes a working frame (11), a first stepping motor (12), a first reduction gear (13), a rotating shaft (14), two sets of turntables (15) and multiple sets of limiting rods (16). The bottom end of the working frame (11) is connected to the ground. The first stepping motor (12) is installed on the working frame (11). The first reduction gear (13) is installed on the first stepping motor (12). The rotating shaft (14) is rotatably installed on the working frame (11) and is longitudinally connected to the first reduction gear (13). The two sets of turntables (15) are both installed on the rotating shaft (14). The multiple sets of limiting rods (16) are respectively installed on the two sets of turntables (15).

3. The seamless steel pipe end chamfering machine according to claim 2, characterized in that, The lifting mechanism (02) includes two sets of hydraulic cylinders (21) and a small conveyor (22). The two sets of hydraulic cylinders (21) are both installed on the working frame (11). The bottom end of the small conveyor (22) is connected to the top ends of the two sets of hydraulic cylinders (21). The two sets of lifting mechanisms (02) are both installed on the working frame (11).

4. The seamless steel pipe end chamfering machine according to claim 2, wherein, The transmission mechanism (03) includes a second stepping motor (31), a second reduction gear (32), two sets of conveyor rollers (33), two sets of first belt pulleys (34) and a first belt (35). The second stepping motor (31) is installed on the working frame (11). The second reduction gear (32) is installed on the working frame (11). The two sets of conveyor rollers (33) are both rotatably installed on the working frame (11) and one of them is longitudinally connected to the second reduction gear (32). The two sets of first belt pulleys (34) are respectively installed on the two sets of conveyor rollers (33). The first belt (35) is tensioned and installed between the two sets of first belt pulleys (34).

5. The seamless steel pipe end chamfering machine according to claim 2, characterized in that, The collection mechanism (04) includes a dust-proof cover (41), a soft curtain (42), a drawer (43) and a handle (44). The dust-proof cover (41) is installed on the working frame (11). The soft curtain (42) is installed at the connection between the working frame (11) and the dust-proof cover (41). A discharge port is opened on the dust-proof cover (41). The drawer (43) is slidably installed at the discharge port of the dust-proof cover (41). The handle (44) is installed on the drawer (43).

6. The seamless steel pipe end chamfering machine according to claim 5, characterized in that, The chamfering mechanism (05) includes a motor (51), a third speed reducer (52), a first transmission shaft (53), a connecting shaft (54), a chamfering head (55), two sets of second pulleys (56) and a second belt (57). The bottom end of the motor (51) is connected to the top end of the working frame (11), the bottom end of the third speed reducer (52) is connected to the top end of the working frame (11), the first transmission shaft (53) is rotatably installed on the dust-proof cover (41) and connected to the third speed reducer (52), the connecting shaft (54) is rotatably installed inside the dust-proof cover (41), the chamfering head (55) is installed on the connecting shaft (54), two sets of second pulleys (56) are respectively installed on the first transmission shaft (53) and the connecting shaft (54), and the second belt (57) is tensioned and installed between the two sets of second pulleys (56).

7. The seamless steel pipe end chamfering machine according to claim 6, characterized in that, The purging mechanism (06) includes a second transmission shaft (61), a pump body (62), an air suction pipe (63), an air delivery pipe (64) and two sets of high-pressure nozzles (65). The second transmission shaft (61) is installed on the third speed reducer (52), the bottom end of the pump body (62) is connected to the top end of the working frame (11), the air suction pipe (63) is installed on the pump body (62), the air delivery pipe (64) is installed on the pump body (62), and two sets of high-pressure nozzles (65) are both installed inside the dust-proof cover (41) and internally communicated with the air delivery pipe (64).

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