CN111842674B

CN111842674B - Automatic reaming assembly line for steel pipes

Info

Publication number: CN111842674B
Application number: CN202010577683.2A
Authority: CN
Inventors: 黎忠琴
Original assignee: Shandong Tieyi Precision Steel Pipe Co ltd
Current assignee: Shandong Tieyi Precision Steel Pipe Co.,Ltd.
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2022-04-05
Anticipated expiration: 2040-06-23
Also published as: CN111842674A

Abstract

The invention relates to a steel pipe reaming assembly line, in particular to an automatic steel pipe reaming assembly line. The technical scheme is as follows: an automatic reaming assembly line for steel pipes comprises: the device comprises a first support, a second support, a first rotating shaft, a straight gear, a first belt wheel and a second belt wheel, wherein the first support is provided with a cross beam, the top of the cross beam is provided with a funnel, one side of the first support, which is close to the cross beam, is fixedly connected with the second support; the servo motor is arranged on one side, close to the second support, of the first support, an output shaft of the servo motor penetrates through the second support, a first gear is fixedly connected to the output shaft of the servo motor, and the first gear is meshed with the straight gear. The invention can conveniently bore the steel pipe by matching the intermittent rotating mechanism with the bore expanding mechanism, can automatically feed the steel pipe by the intermittent rotating mechanism, and can conveniently collect the steel pipe after bore expansion.

Description

Automatic reaming assembly line for steel pipes

Technical Field

The invention relates to a steel pipe reaming assembly line, in particular to an automatic steel pipe reaming assembly line.

Background

Steel pipes can be divided into two main categories according to production methods: seamless steel pipes and welded steel pipes, welded steel pipes are simply called welded pipes.

In the prior art, for example, patent with publication number CN107470484A discloses a cold extrusion reaming device, which includes a base, a supporting block, a positioning plate, a fastener, a first hydraulic system, a controller, a second hydraulic system and a reaming anchor bolt, wherein the supporting block is connected with the base, the positioning plate is connected with the supporting block, the fastener is connected with the base in a sliding manner, the controller is connected with the side surface of the base, and the second hydraulic system is connected with the reaming anchor bolt; this cold extrusion reaming equipment realizes the automatic feeding reaming to the steel pipe, and can conveniently collect the steel pipe after the reaming.

Aiming at the defects of the prior art, a steel pipe automatic reaming assembly line capable of achieving convenient automatic feeding and convenient collection is developed.

Disclosure of Invention

In order to overcome current cold extrusion reaming equipment, realize the automatic feeding reaming to the steel pipe, and can conveniently carry out the shortcoming of collecting to the steel pipe after the reaming, the technical problem that solves is: the automatic reaming assembly line for the steel pipes is convenient to automatically feed and collect.

The technical scheme is as follows: an automatic reaming assembly line for steel pipes comprises: the device comprises a first support, a second support, a first rotating shaft, a straight gear, a first belt wheel and a second belt wheel, wherein the first support is provided with a cross beam, the top of the cross beam is provided with a funnel, one side of the first support, which is close to the cross beam, is fixedly connected with the second support; the servo motor is arranged on one side, close to the second support, of the first support, an output shaft of the servo motor penetrates through the second support, a first gear is fixedly connected to the output shaft of the servo motor, and the first gear is meshed with the straight gear; two fixing plates are arranged on the first support and are arranged on one side, far away from the second support, of the first support, a worm is rotatably arranged between the two fixing plates, a second belt wheel is fixed on the worm, and a first flat belt is wound between the second belt wheel and the first belt wheel; the intermittent rotating mechanism is arranged on one side, close to the worm, of the first support, and a third support is fixedly connected to one side, far away from the cross beam, of the first support; and the hole expanding mechanism is arranged on the third support and is matched with the intermittent rotating mechanism so as to expand the hole of the steel pipe.

As a further preferable mode, the intermittent rotation mechanism includes: the second rotating shaft is connected with an intermittent gear, and a worm wheel is fixed on one side, close to the intermittent gear, of the second rotating shaft and matched with the worm; the third rotating shaft is rotatably arranged on one side, close to the second rotating shaft, of the first support, a third gear is arranged on the third rotating shaft and matched with the intermittent gear, a plurality of legs are arranged on the first support outside the third rotating shaft, a fifth support is fixedly connected among the tops of the legs, the third rotating shaft penetrates through the fifth support, and a discharging port is formed in the side wall of the fifth support; the circular plate is fixedly connected to the top end of the third rotating shaft, a plurality of limiting holes are formed in the circular plate, a plurality of placing grooves are formed in the circumferential wall of the circular plate, the connecting frame is installed at the bottom of the fifth support, two first springs are arranged on the connecting frame, a second baffle is fixedly connected between the two first springs, the second baffle penetrates through the fifth support, and the upper portion of the second baffle is slidably located in the corresponding limiting holes.

As a further preferable mode, the reamer mechanism includes: the vertical plate is fixedly connected to the side wall of the second support, the vertical plate is fixedly connected with the first support, a fourth rotating shaft is rotatably connected between the vertical plate and the third support, and a fourth belt wheel is fixed on the fourth rotating shaft; the third belt wheel is fixed on one side, far away from the first belt wheel, of the first rotating shaft, a second flat belt is wound between the third belt wheel and the fourth belt wheel, a fifth belt wheel is installed on one side, close to the fourth belt wheel, of the fourth rotating shaft, a fifth rotating shaft is rotatably connected to a third support on the upper side of the fourth rotating shaft, a sixth belt wheel is installed on the fifth rotating shaft, and a third flat belt is wound between the sixth belt wheel and the fifth belt wheel; the cam is fixedly connected to one side, close to the sixth belt wheel, of the fifth rotating shaft, a follower is arranged on a cross beam on the lower side of the cam in a sliding mode and is in contact with the cam, a fixing ring is fixedly connected to the follower, a buffer spring is fixedly connected between the fixing ring and the cross beam and wound on the follower, and a hole expanding block is arranged at the bottom of the follower.

As a further preferable embodiment, the method further comprises: a slide rail is arranged below the bottom of the first pressing plate, sliding blocks are arranged on the slide rail in a sliding mode, round-nose pliers are arranged on the inner side surfaces of the two sliding blocks, and the first pressing plate is arranged on the lower portion of the follower; the wedge frame is equipped with two, and equal rigid coupling is in the both sides of a clamp plate bottom, and the wedge frame passes slide rail and sliding block.

As a further preferable embodiment, the method further comprises: the two supports are arranged on one side, far away from the servo motor, of the first support, and a sixth rotating shaft is rotatably arranged between the two supports; the eighth belt wheel is fixed on the sixth rotating shaft, a seventh belt wheel is fixedly connected to one side, far away from the fifth belt wheel, of the fourth rotating shaft, and a fourth flat belt is wound between the seventh belt wheel and the eighth belt wheel; and the brush is fixedly connected to one side wall of the eighth belt wheel.

As a further preferable embodiment, the method further comprises: the poking plate is arranged on the other side wall of the eighth belt wheel, an oil baffle plate is arranged on one side, close to the first pressure plate, of the cross beam in a sliding mode, and the oil baffle plate is in sliding fit with the funnel; the fixed block is connected to one side of the beam far away from the oil baffle plate, and a second spring is fixedly connected between the fixed block and the oil baffle plate.

The invention has the following advantages:

1. according to the invention, the intermittent rotating mechanism is matched with the hole expanding mechanism, so that the steel pipe can be conveniently expanded, the intermittent rotating mechanism can be used for automatically feeding the steel pipe, and the expanded steel pipe can be conveniently collected;

2. the wedge-shaped frame moves downwards so that the two round-nose pliers are close to each other, and the steel pipe can be fixed and limited, so that the steel pipe can be conveniently reamed;

3. the brush can rotate to brush the lubricating oil on the steel pipe, so that the reaming block can conveniently ream the steel pipe;

4. the funnel can be opened to the right continuously by the oil baffle plate, so that a user does not need to pour lubricating oil into the funnel repeatedly, and the labor intensity of the user can be reduced.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the funnel of the present invention.

Fig. 3 is a partial perspective view of the intermittent rotation mechanism of the present invention.

Fig. 4 is a schematic perspective view of a circular plate according to the present invention.

Fig. 5 is a schematic perspective view of a bracket according to the present invention.

Fig. 6 is a schematic perspective view of a second baffle of the present invention.

Fig. 7 is a schematic perspective view of the reaming mechanism of the present invention.

Fig. 8 is a schematic perspective view of the round-nose pliers of the present invention.

Fig. 9 is a perspective view of the brush of the present invention.

Fig. 10 is a schematic perspective view of the oil deflector of the present invention.

Wherein: 1-bracket one, 101-crossbeam, 102-bracket two, 103-bracket three, 105-funnel, 106-fixing plate, 2-servo motor, 3-first gear, 4-first rotating shaft, 401-spur gear, 402-first belt wheel, 5-worm, 501-second belt wheel, 502-first belt, 6-intermittent rotating mechanism, 61-second rotating shaft, 601-intermittent gear, 602-worm gear, 7-third rotating shaft, 701-third gear, 702-bracket five, 703-stilt, 704-connecting frame, 705-first spring, 706-baffle two, 707-circular plate, 708-limit hole, 709-placing groove, 710-discharging port, 8-hole expanding mechanism, 81-vertical plate, 82-fourth rotating shaft, 83-third belt wheel, 801-fourth belt wheel, 802-second flat belt, 803-fifth belt wheel, 9-fifth rotating shaft, 901-sixth belt wheel, 902-third flat belt, 903-cam, 904-follower, 905-fixed ring, 906-buffer spring, 91-reaming block, 907-first pressing plate, 909-sliding rail, 910-sliding block, 911-round jaw, 913-wedge frame, 104-fourth support, 10-sixth rotating shaft, 107-seventh belt wheel, 1001-eighth belt wheel, 1002-fourth flat belt, 1003-brush, 1004-poking plate, 11-oil baffle, 1101-second spring and 1102-fixed block.

Detailed Description

The invention is further illustrated by the following specific examples in which, unless otherwise explicitly stated and limited, terms such as: the arrangement, installation, connection are to be understood broadly, for example, they may be fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

An automatic steel pipe reaming assembly line is shown in fig. 1, fig. 2 and fig. 3, and comprises a first support 1, a cross beam 101, a second support 102, a third support 103, a funnel 105, a fixing plate 106, a servo motor 2, a first gear 3, a first rotating shaft 4, a spur gear 401, a first belt wheel 402, a worm 5, a second belt wheel 501, a first flat belt 502, an intermittent rotating mechanism 6 and a reaming mechanism 8, wherein the cross beam 101 is installed at the top of the first support 1, the funnel 105 is embedded at the rear side of the top of the cross beam 101, the second support 102 is installed on the first support 1 on the left side of the cross beam 101, the first rotating shaft 4 is rotatably connected on the second support 102, the spur gear 401 is fixed on the first rotating shaft 4, the first belt wheel 402 is installed on the first rotating shaft 4 on the front side of the spur gear 401, the servo motor 2 is installed on the first support 1 on the rear side of the second support 102, an output shaft of the servo motor 2 penetrates through the second support 102, the first gear 3 is connected on the output shaft of the servo motor 2, the first gear 3 is meshed with the straight gear 401, the two fixing plates 106 are arranged on the first bracket 1 on the right side of the second bracket 102, a worm 5 is rotatably arranged between the two fixing plates 106, the worm 5 is connected with a second belt wheel 501, a first flat belt 502 is wound between the second belt wheel 501 and the first belt wheel 402, the first bracket 1 on the right side of the worm 5 is provided with an intermittent rotating mechanism 6, the third bracket 103 is installed on the first bracket 1 on the left side of the second bracket 102, the third bracket 103 is provided with a hole expanding mechanism 8, the hole expanding mechanism 8 is connected with the first bracket 1, and the hole expanding mechanism 8 is matched with the intermittent rotating mechanism 6 to expand a steel pipe.

When the steel pipe needs to be reamed, a user puts a proper amount of the steel pipe into the intermittent rotation mechanism 6, then the user starts the servo motor 2 to enable the first gear 3 to rotate, the first gear 3 rotates to enable the first rotation shaft 4 to rotate, the first rotation shaft 4 rotates to drive the first belt wheel 402 to rotate and the reaming mechanism 8 to work, the first belt wheel 402 rotates to enable the second belt wheel 501 to rotate through the first flat belt 502, the second belt wheel 501 rotates to drive the worm 5 to rotate, the worm 5 rotates to drive the intermittent rotation mechanism 6 to work, so that the steel pipe can rotate through the intermittent rotation mechanism 6, the steel pipe can rotate under the funnel 105, then the user pours a proper amount of lubricating oil onto the steel pipe through the funnel 105, when the steel pipe with the lubricating oil rotates under the reaming mechanism 8, the reaming mechanism 8 reams the steel pipe, and because the steel pipe is provided with the lubricating oil, can conveniently carry out the reaming to the steel pipe like this, and realized the automatic feeding to the steel pipe, can conveniently collect the steel pipe after the reaming simultaneously.

Example 2

In addition to embodiment 1, as shown in fig. 1, 3, 4, 5 and 6, the intermittent rotation mechanism 6 includes a second rotation shaft 61, an intermittent gear 601, a worm wheel 602, a third rotation shaft 7, a third gear 701, a bracket five 702, a leg 703, a connecting bracket 704, a first spring 705, a baffle two 706 and a circular plate 707, the second rotation shaft 61 is rotatably connected to the bracket one 1 on the right side of the worm 5, the intermittent gear 601 is connected to the second rotation shaft 61, the worm wheel 602 is connected to the second rotation shaft 61 on the lower side of the intermittent gear 601, the worm wheel 602 is engaged with the worm 5, the third rotation shaft 7 is rotatably provided on the bracket one 1 on the right side of the second rotation shaft 61, the third gear 701 is installed on the third rotation shaft 7, the third gear 701 is engaged with the intermittent gear 601, the six leg 703 are installed on the bracket one 1 on the outer side of the third rotation shaft 7, the bracket five 702 is installed between the tops of the six leg 703, the third rotating shaft 7 penetrates through a fifth support 702, a feed opening 710 is formed in the side wall of the fifth support 702, a circular plate 707 is fixed at the top end of the third rotating shaft 7, a plurality of limiting holes 708 are formed in the circular plate 707, a plurality of placing grooves 709 are formed in the circumferential wall of the circular plate 707, the bottom of the fifth support 702 is connected with a connecting frame 704, two first springs 705 are fixedly connected to the connecting frame 704, a second baffle 706 is arranged between the two first springs 705, the second baffle 706 penetrates through the fifth support 702, and the upper portion of the second baffle 706 is slidably located in the corresponding limiting hole 708.

When the steel pipe needs to be reamed, a user puts a proper amount of the steel pipe into the corresponding placing groove 709, the worm 5 rotates to enable the worm wheel 602 to rotate, the worm wheel 602 rotates to enable the second rotating shaft 61 to rotate, the second rotating shaft 61 rotates to enable the intermittent gear 601 to rotate, when the intermittent gear 601 rotates to be meshed with the third gear 701, the intermittent gear 601 continues to rotate, so the third gear 701 can rotate, the third rotating shaft 7 can enable the circular plate 707 to rotate, the circular plate 707 rotates to be matched with the bracket five 702, so the steel pipe can rotate, the second extrudable baffle 706 moves downwards when the circular plate 707 rotates, the first spring 705 compresses along with the third rotating shaft, when the intermittent gear 601 rotates not to be meshed with the third gear 701, the second baffle 706 can move upwards under the action of the elastic force of the first spring 705 to be clamped into the corresponding limiting hole, so the self-rotation of the circular plate 708 under the action of inertia can be prevented, cause inconvenience for the reaming of steel pipe, rotate through intermittent type gear 601 and cooperate with third gear 701, so can make plectane 707 rotate 30 degrees, so can make the steel pipe rotate 30 degrees and be located reaming mechanism 8 under, reaming mechanism 8 reams the steel pipe simultaneously, so can conveniently ream the steel pipe, when the steel pipe in standing groove 709 rotates and the feed opening 710 coincide, the steel pipe after the reaming in standing groove 709 drops downwards through feed opening 710 thereupon.

Example 3

In addition to embodiment 2, as shown in fig. 1, 7 and 8, the hole enlarging mechanism 8 includes a vertical plate 81, a fourth rotating shaft 82, a third pulley 83, a fourth pulley 801, a second flat belt 802, a fifth pulley 803, a fifth rotating shaft 9, a sixth pulley 901, a third flat belt 902, a cam 903, a follower 904, a fixing ring 905, a buffer spring 906 and a hole enlarging block 91, the vertical plate 81 is fixedly connected to the left side wall of the second bracket 102, the vertical plate 81 is fixedly connected to the first bracket 1, the fourth rotating shaft 82 is rotatably installed between the vertical plate 81 and the third bracket 103, the fourth rotating shaft 82 is provided with the fourth pulley 801, the third pulley 83 is fixed to the first rotating shaft 4 at the front side of the first pulley 402, the second flat belt 802 is wound between the third pulley 83 and the fourth pulley 801, the fifth pulley 803 is fixed to the fourth rotating shaft 82 at the rear side of the fourth pulley 801, the fifth rotating shaft 9 is rotatably connected to the third bracket 103 at the upper side of the fourth rotating shaft 82, a sixth belt wheel 901 is mounted on the fifth rotating shaft 9, a third flat belt 902 is wound between the sixth belt wheel 901 and the fifth belt wheel 803, a cam 903 is arranged on the fifth rotating shaft 9 at the rear side of the sixth belt wheel 901, a follower 904 is slidably arranged on the cross beam 101 at the lower side of the cam 903, the follower 904 is in contact with the cam 903, a fixing ring 905 is mounted on the follower 904, a buffer spring 906 is fixedly connected between the fixing ring 905 and the cross beam 101, the buffer spring 906 is wound on the follower 904, and an expanding block 91 is mounted at the bottom of the follower 904.

The rotation of the first rotating shaft 4 can drive the third belt wheel 83 to rotate, the rotation of the third belt wheel 83 can drive the fourth belt wheel 801 to rotate through the second flat belt 802, the rotation of the fourth belt wheel 801 can drive the fifth belt wheel 803 to rotate through the fourth rotating shaft 82, the rotation of the fifth belt wheel 803 can drive the sixth belt wheel 901 to rotate through the third flat belt 902, the rotation of the sixth belt wheel 901 can drive the fifth rotating shaft 9 to rotate, the rotation of the fifth rotating shaft 9 can drive the cam 903 to rotate, when the cam 903 rotates to press the follower 904 to move downwards, the follower 904 moves downwards to drive the fixing ring 905 to move downwards, the buffer spring 906 is compressed, the follower 904 moves downwards to enable the broaching block 91 to move downwards to ream the steel pipe, when the cam 903 rotates to not press the follower 904, under the action of the elastic force of the buffer spring 906, the reaming block 91 can move upwards to reset, and the steel pipe can be reamed by the continuous downward movement of the reaming block 91.

Example 4

On the basis of embodiment 3, as shown in fig. 1 and 8, the device further includes a first pressing plate 907, a sliding rail 909, a sliding block 910, a circular clamp 911 and a wedge frame 913, the first pressing plate 907 is installed at the top inside the beam 101 on both sides of the follower 904, the sliding rail 909 is installed below the bottom of the first pressing plate 907, the sliding block 910 is slidably installed on the sliding rail 909, the circular clamp 911 is connected to the inner side surfaces of the two sliding blocks 910, the first pressing plate 907 is installed on the lower portion of the follower 904, the wedge frame 913 is installed on both sides of the bottom of the first pressing plate 907, and the wedge frame 913 penetrates through the sliding rail 909 and the sliding block 910.

The follower 904 moves downwards to drive the part on the follower 904 to move downwards, so that the first pressing plate 907 moves downwards, the first pressing plate 907 moves downwards to enable the wedge frame 913 to move downwards, the wedge frame 913 moves downwards to enable the two sliding blocks 910 to close together, the two sliding blocks 910 close together to enable the two circular hole cutters 911 to close together, the two circular hole cutters 911 close together to fix and limit the steel pipe, meanwhile, the hole expanding block 91 moves downwards to expand the steel pipe, and therefore the steel pipe is prevented from shaking by itself to obstruct the hole expansion of the steel pipe when the steel pipe is expanded, and after the follower 904 moves upwards to reset, the two circular hole cutters 911 are away from and reset with the steel pipe.

Example 5

In addition to embodiment 4, as shown in fig. 1, 2 and 9, the present invention further includes a bracket four 104, a sixth rotating shaft 10, a seventh pulley 107, an eighth pulley 1001, a fourth flat belt 1002, and a brush 1003, wherein two brackets four 104 are mounted on the bracket 1 on the rear side of the servo motor 2, the sixth rotating shaft 10 is rotatably disposed between the two brackets four 104, the eighth pulley 1001 is mounted on the sixth rotating shaft 10, the seventh pulley 107 is connected to the fourth rotating shaft 82 on the rear side of the fifth pulley 803, the fourth flat belt 1002 is wound between the seventh pulley 107 and the eighth pulley 1001, and the brush 1003 is fixed to an eccentric position of a front side wall of the eighth pulley 1001.

The seventh pulley 107 can be rotated by the rotation of the fourth rotating shaft 82, the eighth pulley 1001 can be rotated by the rotation of the seventh pulley 107 through the fourth flat belt 1002, the brush 1003 can be rotated by the rotation of the eighth pulley 1001, meanwhile, a proper amount of lubricating oil is poured into the hopper 105 by a user, the lubricating oil in the hopper 105 falls down on the brush 1003 along with the lubricating oil, the lubricating oil can be coated on the steel pipe by the rotation of the brush 1003, and thus the steel pipe can be conveniently reamed.

As shown in fig. 1, 9 and 10, the device further includes a toggle plate 1004, an oil baffle plate 11, a second spring 1101 and a fixed block 1102, the toggle plate 1004 is fixedly connected to an eccentric position of a rear side wall of the eighth pulley 1001, the oil baffle plate 11 is slidably arranged on the cross beam 101 on the rear side of the second pressing plate 908, the oil baffle plate 11 is slidably fitted with the funnel 105, the fixed block 1102 is connected to the cross beam 101 on the left side of the oil baffle plate 11, and the second spring 1101 is fixedly connected between the fixed block 1102 and the oil baffle plate 11.

When the steel pipe needs to be reamed, a user pours a proper amount of lubricating oil into the funnel 105, the eighth belt wheel 1001 rotates to enable the poking plate 1004 to rotate, when the poking plate 1004 rotates to be in contact with the oil baffle plate 11, the poking plate 1004 continues to rotate, so that the oil baffle plate 11 can move rightwards, the second spring 1101 is stretched, the oil baffle plate 11 can open the funnel 105 rightwards, the lubricating oil in the funnel 105 falls downwards onto the brush 1003, the brush 1003 rotates to brush the lubricating oil on the steel pipe, when the poking plate 1004 rotates far away from the oil baffle plate 11, the oil baffle plate 11 can move backwards and reset under the action of the elastic force of the second spring 1101, so that the funnel 105 can be stopped, the lubricating oil does not need to be poured into the funnel 105 repeatedly by the user, and the labor intensity of the user can be reduced.

It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. The utility model provides an automatic reaming's of steel pipe assembly line which characterized in that, including:

the funnel-shaped support comprises a first support (1), wherein a cross beam (101) is installed on the first support (1), a funnel (105) is arranged at the top of the cross beam (101), a second support (102) is fixedly connected to one side, close to the cross beam (101), of the first support (1), the second support (102) is rotatably connected with a first rotating shaft (4), a straight gear (401) is installed on the first rotating shaft (4), and a first belt wheel (402) is fixedly connected to one side, close to the straight gear (401), of the first rotating shaft (4);

the servo motor (2) is arranged on one side, close to the second support (102), of the first support (1), an output shaft of the servo motor (2) penetrates through the second support (102), a first gear (3) is fixedly connected to the output shaft of the servo motor (2), and the first gear (3) is meshed with the straight gear (401);

two fixing plates (106), wherein the two fixing plates (106) are arranged on the first support (1) and are arranged on one side far away from the second support (102), a worm (5) is rotatably arranged between the two fixing plates (106), a second belt wheel (501) is fixed on the worm (5), and a first flat belt (502) is wound between the second belt wheel (501) and the first belt wheel (402);

the intermittent rotating mechanism (6) is arranged on one side, close to the worm (5), of the first support (1), and a third support (103) is fixedly connected to one side, far away from the cross beam (101), of the first support (1);

the hole expanding mechanism (8), the hole expanding mechanism (8) is arranged on the third support (103), and the hole expanding mechanism (8) is matched with the intermittent rotating mechanism (6) so as to expand the hole of the steel pipe;

the intermittent rotation mechanism (6) includes:

the second rotating shaft (61), the intermittent gear (601) is connected to the second rotating shaft (61), a worm wheel (602) is fixed to one side, close to the intermittent gear (601), of the second rotating shaft (61), and the worm wheel (602) is matched with the worm (5);

the third rotating shaft (7) is rotatably mounted on one side, close to the second rotating shaft (61), of the first support (1), a third gear (701) is mounted on the third rotating shaft (7), the third gear (701) is matched with the intermittent gear (601), a plurality of legs (703) are mounted on the first support (1) on the outer side of the third rotating shaft (7), a fifth support (702) is fixedly connected among tops of the legs (703), the third rotating shaft (7) penetrates through the fifth support (702), and a discharging opening (710) is formed in the side wall of the fifth support (702);

a circular plate (707), the circular plate (707) is fixedly connected to the top end of the third rotating shaft (7), a plurality of limiting holes (708) are formed in the circular plate (707), a plurality of placing grooves (709) are formed in the circumferential wall of the circular plate (707), a connecting frame (704) is installed at the bottom of the fifth support (702), two first springs (705) are arranged on the connecting frame (704), a second baffle (706) is fixedly connected between the two first springs (705), the second baffle (706) penetrates through the fifth support (702), and the upper portion of the second baffle (706) is slidably located in the corresponding limiting holes (708);

the reaming mechanism (8) comprises:

the vertical plate (81), the vertical plate (81) is fixedly connected to the side wall of the second support (102), the vertical plate (81) is fixedly connected with the first support (1), a fourth rotating shaft (82) is rotatably connected between the vertical plate (81) and the third support (103), and a fourth belt wheel (801) is fixed on the fourth rotating shaft (82);

the third belt wheel (83), the third belt wheel (83) is fixed on one side, far away from the first belt wheel (402), of the first rotating shaft (4), a second flat belt (802) is wound between the third belt wheel (83) and the fourth belt wheel (801), a fifth belt wheel (803) is installed on one side, close to the fourth belt wheel (801), of the fourth rotating shaft (82), a fifth rotating shaft (9) is rotatably connected to a third support (103) on the upper side of the fourth rotating shaft (82), a sixth belt wheel (901) is installed on the fifth rotating shaft (9), and a third flat belt (902) is wound between the sixth belt wheel (901) and the fifth belt wheel (803);

the cam (903), the cam (903) is fixedly connected to one side, close to the sixth belt wheel (901), of the fifth rotating shaft (9), a follower (904) is arranged on a cross beam (101) on the lower side of the cam (903) in a sliding mode, the follower (904) is in contact with the cam (903), a fixing ring (905) is fixedly connected to the follower (904), a buffer spring (906) is fixedly connected between the fixing ring (905) and the cross beam (101), the buffer spring (906) is wound on the follower (904), and a hole expanding block (91) is arranged at the bottom of the follower (904);

also includes:

the lower part of the bottom of the first pressing plate (907) is provided with a sliding rail (909), sliding blocks (910) are arranged on the sliding rail (909) in a sliding mode, the inner side surfaces of the two sliding blocks (910) are provided with round-nose pliers (911), and the lower part of the follower (904) is provided with the first pressing plate (907);

two wedge-shaped frames (913) are fixedly connected to two sides of the bottom of the first pressure plate (907), and the wedge-shaped frames (913) penetrate through the sliding rails (909) and the sliding blocks (910);

also includes:

two supports IV (104) are arranged on one side of the first support (1) far away from the servo motor (2), and a sixth rotating shaft (10) is rotatably arranged between the two supports IV (104);

the eighth belt wheel (1001) is fixed on the sixth rotating shaft (10), a seventh belt wheel (107) is fixedly connected to one side, far away from the fifth belt wheel (803), of the fourth rotating shaft (82), and a fourth flat belt (1002) is wound between the seventh belt wheel (107) and the eighth belt wheel (1001);

a brush (1003) fixedly connected to one side wall of the eighth belt wheel (1001);

also includes:

the poking plate (1004) is arranged on the other side wall of the eighth belt wheel (1001), an oil baffle plate (11) is arranged on one side, close to the first pressing plate (907), of the cross beam (101) in a sliding mode, and the oil baffle plate (11) is matched with the hopper (105) in a sliding mode;

and the fixing block (1102) is connected to one side, far away from the oil baffle plate (11), of the cross beam (101), and a second spring (1101) is fixedly connected between the fixing block (1102) and the oil baffle plate (11).