CN111347300B - Grinding device for end face of steel pipe - Google Patents

Abstract

The invention discloses a grinding device for end faces of steel pipes, which mainly solves the problems of low efficiency and potential safety hazard in the existing manual grinding of the end faces of the steel pipes. Comprising the following steps: the conveying mechanism is internally provided with a conveying belt; the blanking mechanism is provided with a blanking frame; the clamping mechanism is provided with a supporting frame; the movable sliding block is arranged above the supporting frame; the movable arm is arranged in the movable sliding block, and a clamping hand is arranged at the bottom of the movable arm; the polishing mechanism is provided with a fixed seat; the first movable seat is provided with an inner polishing head which is used for polishing the inner wall end of the steel pipe; the second removes the seat, be provided with outer grinding head on the second removes the seat, interior grinding head passes outer grinding head, outer grinding head is used for polishing the outer wall end of steel pipe. The invention has the advantages of reducing the labor burden of workers and improving the polishing work progress.

Description

Grinding device for end face of steel pipe

Technical Field

The invention relates to the field of steel pipe polishing, in particular to a polishing device for the end face of a steel pipe.

Background

Seamless steel pipes have a hollow cross section and are used in large numbers as pipes for transporting fluids, such as oil, gas, water and certain solid materials. Compared with solid steel such as round steel, the seamless steel tube has lighter weight under the same bending and torsional strength; meanwhile, the seamless steel pipe is widely used for manufacturing structural parts and mechanical parts, such as a petroleum drill pipe, an automobile transmission shaft, a bicycle frame, a steel scaffold used in building construction and the like, and has the advantages of high material utilization rate, simple manufacturing process and reduced processing time.

When the seamless steel pipes are assembled in a building and are in butt joint with pipelines, the lengths of the seamless steel pipes are required to be adjusted in cutting, the cut steel pipes are short and cannot be used for long-distance pipeline butt joint, but the short steel pipes can be recycled and used as other places, and the cut uneven end faces can be continuously used as new places just by re-grinding and leveling.

The traditional grinding of the end face of the sample is carried out by manual grinding, namely, the end face of the sample is manually ground by manually adopting knife sharpening, but the grinding efficiency of the method is low, and potential safety hazards exist.

Disclosure of Invention

The invention aims to provide a grinding device for a steel pipe end face, which solves the problems of low efficiency and potential safety hazard in the existing manual grinding of the steel pipe end face.

In order to achieve the above purpose, the embodiment of the present invention adopts the following scheme:

a grinding device for end surfaces of steel pipes, comprising:

the conveying mechanism is internally provided with a conveying belt, a plurality of equidistant parting strips are arranged on the conveying belt, and a steel pipe can be accommodated between the parting strips;

unloading mechanism, unloading mechanism has

The blanking frame is fixed at the front end of the conveying mechanism, and steel pipes can be accommodated in the blanking frame;

Clamping mechanism, the clamping mechanism has

The supporting frame is positioned above the conveying belt;

The movable sliding block is arranged above the supporting frame and can move on the supporting frame;

The movable arm is arranged in the movable sliding block, and a clamping hand is arranged at the bottom of the movable arm and used for clamping the steel pipe;

Polishing mechanism, the polishing mechanism has

The fixed seat is arranged at the side edge of the conveying mechanism;

The first movable seat is arranged on the fixed seat, and is provided with an inner polishing head for polishing the inner wall end of the steel pipe;

The second removes the seat, the second removes the seat setting and is in on the first removes the seat, be provided with outer grinding head on the second removes the seat, interior grinding head passes outer grinding head, outer grinding head is used for polishing the outer wall end of steel pipe.

The movable arm, the inner polishing head and the outer polishing head are positioned at the same horizontal central position, so that the steel pipe can be conveniently adjusted to the horizontal central position for polishing.

The front end of interior polishing head is the toper, conveniently polishes the inner wall end burr of steel pipe, the inside chamfer of front end of outer polishing head and inwards slope, conveniently polishes the outer wall end burr of steel pipe.

Preferably, a dividing disc is arranged above the blanking frame, a first motor is arranged at the rear end of the dividing disc, the first motor can drive the dividing disc to rotate, the front end of the dividing disc is a front disc, the rear end of the dividing disc is a rear disc, the front disc and the rear disc are semicircular, and the distance between the front disc and the rear disc is the distance of the diameter of the steel tube. The front disc and the rear disc are used for separating the steel pipes, so that the steel pipes can fall down one by one to be polished, and the missing polishing caused by falling of redundant steel pipes is prevented.

Preferably, a first telescopic cylinder is arranged on one side of the conveying mechanism and used for pushing the steel pipe, a second telescopic cylinder is arranged on one side of the supporting frame and connected with the movable sliding block, and the movable sliding block can be driven to move.

Preferably, the rear part of the movable arm is provided with a rear plate, two sides in the rear plate are provided with a plurality of equidistant clamping strips, the inner side of the movable sliding block is provided with a transmission gear, the transmission gear is clamped with the clamping strips, the movable sliding block is also provided with a first bevel gear, a second bevel gear is connected with the transmission gear, the first bevel gear is meshed with the second bevel gear, and a second motor is arranged above the movable sliding block and connected with the second bevel gear. The second motor can drive the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the transmission gear is driven to rotate to drive the movable arm to move up and down, and the position of the steel pipe is convenient to adjust.

Preferably, the side of tong is equipped with the curb plate, be equipped with the connecting piece in the removal arm, the connecting piece rotates to be connected the curb plate, the top of removal arm is equipped with first lead screw motor, be equipped with the drive block on the transfer line of first lead screw motor, the drive block is connected the connecting piece.

Preferably, a sliding seat is arranged above the fixed seat, a positioning track is fixed on the side edge of the conveying mechanism, the sliding seat is arranged on the positioning track, a second screw motor is arranged at the bottom of the sliding seat, and the second screw motor can drive the sliding seat to slide.

Preferably, the top of sliding seat is fixed and is equipped with down the buckle, the top of buckle is equipped with down the buckle, down the buckle with go up the buckle and be semi-circular for clip the steel pipe, be fixed with the third motor in the sliding seat, be equipped with the driving gear on the transmission end of third motor, the both sides of driving gear are equipped with first driven gear and second driven gear, first driven gear with be equipped with the screw thread screw rod on the second driven gear, the screw thread screw rod passes the both sides of buckle down in the both sides connection of buckle, and the rotation of third motor drivable driving gear is used for removing the buckle.

Preferably, the grinding wheel is arranged in front of the fixing seat, the grinding wheel can be turned over, a third screw motor is arranged at the rear of the fixing seat, the third screw motor is connected with the first moving seat and can drive the first moving seat to move on the fixing seat, a fourth screw motor is arranged at the rear of the first moving seat and is connected with the second moving seat and can drive the second moving seat to move on the first moving seat.

Preferably, the first moving seat is provided with a first bearing seat and a second bearing seat, the first bearing seat and the second bearing seat penetrate through the inner polishing head, the bottom of the first moving seat is fixedly provided with a fourth motor, the fourth motor is used for driving the inner polishing head to rotate, the second moving seat is provided with a third bearing seat, the third bearing seat penetrates through the outer polishing head, and the bottom of the second moving seat is fixedly provided with a fifth motor, and the fifth motor is used for driving the outer polishing head to rotate.

A method for using a grinding device for end faces of steel pipes comprises the following steps:

placing the steel pipes into a feeding and discharging frame, wherein a front disc at the front end of a dividing disc at an initial position faces to the right, a rear disc faces upwards, the steel pipes are blocked by the front disc, then a first motor is started, the first motor drives the dividing disc to rotate, the front disc faces upwards, the rear disc faces to the left, the steel pipes are divided when the rear disc rotates, other steel pipes except the first steel pipe are blocked, the first steel pipe falls out of the feeding frame after the dividing disc rotates, and the feeding frame falls between division bars on a conveying belt;

starting a second motor, driving a movable arm to move downwards, then starting a first screw motor, driving a clamp to open, enabling a steel pipe to enter below the clamp under the driving of a conveying belt, enabling the clamp to move downwards to two sides of the steel pipe with the aid of the movable arm, then driving the clamp to fold reversely by the first screw motor, adjusting the steel pipe to the right-center position of a polishing mechanism, then driving a first telescopic cylinder, driving the steel pipe by the first telescopic cylinder, enabling the steel pipe to enter into a lower pinch plate and an upper pinch plate, and finally driving the movable arm to move upwards by the second motor;

Starting a second screw motor and a third motor, wherein the third motor drives a driving gear to rotate, the driving gear drives a first driven gear and a second driven gear to fold an upper pinch plate and a lower pinch plate, the front end of a fixed steel tube is clamped, and then a sliding seat is driven by the second screw motor to move upwards, so that the steel tube is aligned with an inner polishing head and an outer polishing head;

Starting a third screw motor and a fourth screw motor, driving a first movable seat to move forward by the third screw motor, turning down a polishing wheel, enabling the lower half part of the polishing wheel to be attached to the front end of a steel pipe for polishing and flattening, turning over again after polishing, then starting the fourth motor, driving an inner polishing head to rotate by the fourth motor, polishing burrs at the inner wall end of the steel pipe by the inner polishing head, driving a second movable seat to move by the fourth screw motor, driving an outer polishing head to rotate by the fifth motor, polishing burrs at the outer wall end of the steel pipe by the outer polishing head, returning to an initial position after polishing, loosening an upper buckle plate, then moving downwards by using a movable arm, clamping the steel pipe by a clamp hand, starting a second telescopic cylinder, driving the movable seat to move backwards, pulling the steel pipe back onto a conveying belt, and taking out the steel pipe under the transmission of the conveying belt to finish work.

The invention has the beneficial effects that:

the invention relates to a grinding device for the end face of a steel pipe, which is characterized in that a blanking frame is used for dropping out one steel pipe, the central position of the steel pipe is adjusted under the action of a clamping hand, then an upper buckle plate and a lower buckle plate are used for fixing, finally the end face of the steel pipe is ground by a grinding wheel, the inner wall end of the steel pipe is subjected to deburring by an inner grinding wheel, the outer wall end of the steel pipe is subjected to deburring by an outer grinding wheel, and an automatic assembly line can be formed; the invention has the beneficial effects of reducing the labor burden of workers, improving the polishing work progress and forming an automatic polishing assembly line.

Drawings

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

Fig. 2 is a cross-sectional view of a blanking mechanism in the present invention.

Fig. 3 is a schematic view of a split disc in the present invention.

Fig. 4 is a schematic view of the motion of the divider disk in the present invention.

Fig. 5 is a rear perspective view of the present invention.

Fig. 6 is a schematic view of a mobile arm in accordance with the present invention.

Fig. 7 is a cross-sectional view of a mobile arm in accordance with the present invention.

Fig. 8 is a schematic view of a securing mechanism in front of a grinding mechanism in accordance with the present invention.

Fig. 9 is a schematic view of the driving parts of the upper gusset and the lower gusset of the present invention.

Fig. 10 is a schematic view of the grinding mechanism of the present invention.

Fig. 11 is a cross-sectional view of the grinding mechanism of the present invention.

1. Transport mechanism 2, blanking mechanism 3 and clamping mechanism

4. Polishing mechanism 101, conveyer belt 102 and parting bead

103. First telescopic cylinder 21, blanking frame 22 and dividing plate

23. First motor 221, front plate 222, rear plate

31. Support 32, movable slide 33 and second telescopic cylinder

34. Moving arm 35, grip 6, and connector

37. A first lead screw motor 38, a second motor 39, and a first bevel gear

341. Rear plate 342, clamping bar 343, and transmission gear

344. Second bevel gear 351, side plate 41, positioning rail

42. Sliding seat 43, lower buckle 44 and third motor

45. Upper pinch plate 46, second screw motor 47 and fixing seat

48. First movable seat 49, second movable seat 50, and grinding wheel

441. Driving gear 442, first driven gear 443, second driven gear

471. Third screw motor 481, fourth screw motor 371, and driving block

482. Inner polishing head 483, first bearing seat 484 and fourth motor

485. Second bearing pedestal 491, third bearing pedestal 492, and outer sanding head

493. Fifth motor

Detailed Description

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. However, it is apparent that. It will be apparent to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

A grinding device for end surfaces of steel pipes, comprising: the conveying mechanism 1 is provided with a conveying belt 101, a plurality of equidistant parting strips 102 are arranged on the conveying belt 101, and a steel pipe can be accommodated between the parting strips 102; the blanking mechanism 2 is provided with a blanking frame 21, the blanking frame 21 is fixed at the front end of the conveying mechanism 1, and steel pipes can be accommodated in the blanking frame 21; the clamping mechanism 3 is provided with a supporting frame 31, and the supporting frame 31 is positioned above the conveying belt 101; a moving slider 32, the moving slider 32 is arranged above the supporting frame 31, and the moving slider 32 can move on the supporting frame 31; the movable arm 34, the movable arm 34 is arranged in the movable slide block 32, a clamping hand 35 is arranged at the bottom of the movable arm 34, and the clamping hand 35 is used for clamping the steel pipe; the polishing mechanism 4 is provided with a fixing seat 47, and the fixing seat 47 is arranged at the side edge of the conveying mechanism 1; the first movable seat 48, the first movable seat 48 is arranged on the fixed seat 47, the first movable seat 48 is provided with an inner polishing head 482, and the inner polishing head 482 is used for polishing the inner wall end of the steel pipe; and a second movable seat 49, the second movable seat 49 is arranged on the first movable seat 48, an outer polishing head 492 is arranged on the second movable seat 49, the inner polishing head 482 passes through the outer polishing head 492, and the outer polishing head 492 is used for polishing the outer wall end of the steel pipe.

The movable arm 34, the inner sanding head 482 and the outer sanding head 492 are positioned at the same horizontal central position, so that the steel pipe can be conveniently adjusted to the horizontal central position for sanding.

The front end of interior grinding head 482 is the toper, conveniently polishes the inner wall end burr of steel pipe, and the inside chamfer of front end of outer grinding head 492 and inwards slope, conveniently polishes the outer wall end burr of steel pipe.

Specifically, as shown in fig. 2-4, a sub-disc 22 is disposed above the blanking frame 21, a first motor 23 is mounted at the rear end of the sub-disc 22, the first motor 23 can drive the sub-disc 22 to rotate, the front end of the sub-disc 22 is a front disc 221, the rear end of the sub-disc 22 is a rear disc 222, the front disc 221 and the rear disc 222 are both semicircular, and the distance between the front disc 221 and the rear disc 222 is the distance of the diameter of the steel tube. The front disc 221 and the rear disc 222 are used for separating the steel pipes, so that the steel pipes can fall down one by one to be polished, and the missing polishing caused by the falling of redundant steel pipes is prevented.

Specifically, as shown in fig. 5, a first telescopic cylinder 103 is arranged on one side of the transport mechanism 1, the first telescopic cylinder 103 is used for pushing a steel pipe, a second telescopic cylinder 33 is arranged on one side of the support frame 31, and the second telescopic cylinder 33 is connected with a moving slide block 32, so that the moving slide block 32 can be driven to move.

Specifically, as shown in fig. 6, a rear plate 341 is disposed at the rear portion of the moving arm 34, a plurality of equidistant clamping bars 342 are disposed on two sides of the rear plate 341, a transmission gear 343 is disposed at the inner side of the moving slide 32, the transmission gear 343 is engaged with the clamping bars 342, a first bevel gear 39 is further disposed in the moving slide 32, a second bevel gear 344 is connected to the transmission gear 343, the first bevel gear 39 is meshed with the second bevel gear 344, a second motor 38 is disposed above the moving slide 32, and the second motor 38 is connected to the second bevel gear 344. The second motor 38 can drive the first bevel gear 39 to rotate, the first bevel gear 39 drives the second bevel gear 344 to rotate, and the transmission gear 343 is driven to rotate to drive the moving arm 34 to move up and down, so that the position of the steel pipe can be conveniently adjusted.

Specifically, as shown in fig. 7, a side plate 351 is provided on a side of the grip 35, a connecting piece 6 is provided in the moving arm 34, the connecting piece 6 is rotatably connected with the side plate 351, a first screw motor 37 is provided on a top of the moving arm 34, a driving block 371 is provided on a transmission rod of the first screw motor 37, and the driving block 371 is connected with the connecting piece 6.

Specifically, a sliding seat 42 is arranged above the fixed seat 47, a positioning rail 41 is fixed on the side edge of the transport mechanism 1, the sliding seat 42 is arranged on the positioning rail 41, a second screw motor 46 is arranged at the bottom of the sliding seat 42, and the second screw motor 46 can drive the sliding seat 42 to slide.

Specifically, as shown in fig. 8, a lower pinch plate 43 is fixedly arranged at the top of the sliding seat 42, an upper pinch plate 45 is arranged above the lower pinch plate 43, both the lower pinch plate 43 and the upper pinch plate 45 are semicircular and are used for clamping steel pipes, a third motor 44 is fixed in the sliding seat 42, as shown in fig. 9, a driving gear 441 is arranged at the transmission end of the third motor 44, a first driven gear 442 and a second driven gear 443 are arranged at two sides of the driving gear 441, threaded screws are arranged on the first driven gear 442 and the second driven gear 443, the threaded screws penetrate through two sides of the lower pinch plate 43 and are connected with two sides of the upper pinch plate 45, and the third motor 44 can drive the driving gear 441 to rotate and is used for moving the upper pinch plate 45.

Specifically, as shown in fig. 10, the grinding wheel 50 is disposed in front of the fixed seat 47, the grinding wheel 50 can be turned over, a third screw motor 471 is disposed at the rear of the fixed seat 47, the third screw motor 471 is connected to the first movable seat 48 and can drive the first movable seat 48 to move on the fixed seat 47, a fourth screw motor 481 is disposed at the rear of the first movable seat 48, the fourth screw motor 481 is connected to the second movable seat 49 and can drive the second movable seat 49 to move on the first movable seat 48.

Specifically, as shown in fig. 11, a first bearing seat 483 and a second bearing seat 485 are disposed on the first moving seat 48, an inner grinding head 482 is penetrated through the first bearing seat 483 and the second bearing seat 485, a fourth motor 484 is fixedly disposed at the bottom of the first moving seat 48, the fourth motor 484 is used for driving the inner grinding head 482 to rotate, a third bearing seat 491 is disposed on the second moving seat 49, an outer grinding head 492 is penetrated through the third bearing seat 491, a fifth motor 493 is fixedly disposed at the bottom of the second moving seat 49, and the fifth motor 493 is used for driving the outer grinding head 492 to rotate.

A method for using a grinding device for end faces of steel pipes comprises the following steps:

placing the steel pipes into the feeding and discharging frame 21, wherein a front disc 221 at the front end of a sub disc 22 at the initial position faces to the right, a rear disc 222 faces upwards, the steel pipes are blocked by the front disc 221, then a first motor 23 is started, the first motor 23 drives the sub disc 22 to rotate, the front disc 221 faces upwards, the rear disc 222 faces to the left, the steel pipes are separated when the rear disc 222 rotates, other steel pipes except the first steel pipe are blocked, the first steel pipe falls out of the discharging frame 21 after the sub disc 22 rotates, and the discharging frame 21 falls between the parting strips 102 on the conveying belt 101;

Starting a second motor 38, driving the movable arm 34 to move downwards, then starting a first screw motor 37, driving the clamping hand 35 to open, driving the steel pipe to enter below the clamping hand 35 under the driving of the conveying belt 101, enabling the clamping hand 35 to move downwards to two sides of the steel pipe with the help of the movable arm 34, then driving the clamping hand 35 to fold reversely by the first screw motor 37, adjusting the steel pipe to the right central position of the polishing mechanism 4, then driving a first telescopic cylinder 103, driving the steel pipe by the first telescopic cylinder 103, enabling the steel pipe to enter into a lower pinch plate 43 and an upper pinch plate 45, and finally driving the movable arm 34 to move upwards by the second motor 38;

Starting the second screw motor 46 and the third motor 44, driving the driving gear 441 to rotate by the third motor 44, driving the first driven gear 442 and the second driven gear 443 by the driving gear 441 to fold the upper pinch plate 45 and the lower pinch plate 43 and clamp the front end of the fixed steel pipe, and then driving the second screw motor 46 to move the sliding seat 42 upwards to enable the steel pipe to align with the inner polishing head 482 and the outer polishing head 492;

The third screw motor 471 and the fourth screw motor 481 are started, the first movable seat 48 is driven to move forward by the third screw motor 471, the grinding wheel 50 is turned over firstly, the lower half part of the grinding wheel 50 is attached to the front end of a steel pipe for grinding and flattening, the grinding wheel is turned over again after finishing grinding, then the fourth motor 484 is started, the fourth motor 484 drives the inner grinding head 482 to rotate, the inner grinding head 482 grinds burrs at the inner wall end of the steel pipe, finally the second movable seat 49 is driven by the fourth screw motor 481 to move, the outer grinding head 492 is driven by the fifth motor 493 to rotate, the outer grinding head 492 grinds burrs at the outer wall end of the steel pipe, the steel pipe returns to the initial position after finishing grinding, the upper pinch plate 45 is loosened, then moves downwards by the movable arm 34, the clamp 35 clamps the steel pipe, the second telescopic cylinder 33 is started, the movable seat is driven to move backwards and pull back to the conveying belt 101, and the steel pipe is carried out under the transmission of the conveying belt 101 to finish work.

The invention relates to a grinding device for the end face of a steel pipe, which is characterized in that a blanking frame 21 is used for dropping out one steel pipe, the central position of the steel pipe is adjusted under the action of a clamping hand 35, then an upper clamping plate 45 and a lower clamping plate 43 are used for fixing, finally the end face of the steel pipe is ground by a grinding wheel 50, the inner grinding head 482 is used for deburring the inner wall end of the steel pipe, and the outer grinding head 492 is used for deburring the outer wall end of the steel pipe, so that an automatic assembly line can be formed, the labor burden of workers is reduced, and the grinding work progress is improved.

While the foregoing describes the illustrative embodiments of the present invention so that those skilled in the art may understand the present invention, the present invention is not limited to the specific embodiments, and all inventive innovations utilizing the inventive concepts are herein within the scope of the present invention as defined and defined by the appended claims, as long as the various changes are within the spirit and scope of the present invention.

Claims (6)

1. A grinding device for end surfaces of steel pipes, comprising:

the conveying mechanism is internally provided with a conveying belt, a plurality of equidistant parting strips are arranged on the conveying belt, and a steel pipe can be accommodated between the parting strips;

unloading mechanism, unloading mechanism has

The blanking frame is fixed at the front end of the conveying mechanism, and steel pipes can be accommodated in the blanking frame;

Clamping mechanism, the clamping mechanism has

The supporting frame is positioned above the conveying belt;

The movable sliding block is arranged above the supporting frame and can move on the supporting frame;

The movable arm is arranged in the movable sliding block, and a clamping hand is arranged at the bottom of the movable arm and used for clamping the steel pipe;

Polishing mechanism, the polishing mechanism has

The fixed seat is arranged at the side edge of the conveying mechanism;

The first movable seat is arranged on the fixed seat, and is provided with an inner polishing head for polishing the inner wall end of the steel pipe;

The second movable seat is arranged on the first movable seat, an outer polishing head is arranged on the second movable seat, the inner polishing head penetrates through the outer polishing head, and the outer polishing head is used for polishing the outer wall end of the steel pipe;

a first motor is arranged at the rear end of the dividing disc, the first motor can drive the dividing disc to rotate, the front end of the dividing disc is a front disc, the rear end of the dividing disc is a rear disc, the front disc and the rear disc are semicircular, and the distance between the front disc and the rear disc is the diameter of a steel tube;

a sliding seat is arranged above the fixed seat, a positioning track is fixed on the side edge of the transport mechanism, the sliding seat is arranged on the positioning track, a second screw motor is arranged at the bottom of the sliding seat, and the second screw motor can drive the sliding seat to slide;

The top of the sliding seat is fixedly provided with a lower buckle plate, an upper buckle plate is arranged above the lower buckle plate, the lower buckle plate and the upper buckle plate are semicircular and are used for clamping a steel pipe, a third motor is fixed in the sliding seat, a driving gear is arranged at the transmission end of the third motor, a first driven gear and a second driven gear are arranged on two sides of the driving gear, a threaded screw is arranged on the first driven gear and the second driven gear, the threaded screw penetrates through two sides of the lower buckle plate and is connected with two sides of the upper buckle plate, and the third motor can drive the driving gear to rotate so as to move the upper buckle plate;

the front of fixing base is equipped with the grinding wheel, the grinding wheel can overturn, and the rear portion of fixing base is equipped with the third lead screw motor, the third lead screw motor is connected first movable seat, can drive first movable seat and remove on the fixing base, the rear portion of first movable seat is equipped with the fourth lead screw motor, the fourth lead screw motor is connected the second movable seat, can drive the second movable seat and remove on the first movable seat.

2. The grinding device for the end face of the steel pipe according to claim 1, wherein a first telescopic cylinder is arranged on one side of the conveying mechanism and used for pushing the steel pipe, a second telescopic cylinder is arranged on one side of the supporting frame and connected with the movable sliding block, and the movable sliding block can be driven to move.

3. The grinding device for the end face of the steel pipe according to claim 1, wherein a rear plate is arranged at the rear part of the movable arm, a plurality of equidistant clamping strips are arranged on two sides of the rear plate, a transmission gear is arranged on the inner side of the movable sliding block and is clamped with the clamping strips, a first bevel gear is further arranged in the movable sliding block and is connected with the transmission gear, a second bevel gear is further connected with the transmission gear, the first bevel gear is meshed with the second bevel gear, a second motor is arranged above the movable sliding block, and the second motor is connected with the second bevel gear.

4. The device for grinding the end face of the steel pipe according to claim 1, wherein a side plate is arranged on the side edge of the clamping hand, a connecting piece is arranged in the movable arm, the connecting piece is rotationally connected with the side plate, a first screw motor is arranged at the top of the movable arm, a driving block is arranged on a transmission rod of the first screw motor, and the driving block is connected with the connecting piece.

5. The grinding device for the end face of the steel pipe according to claim 1, wherein the first moving seat is provided with a first bearing seat and a second bearing seat, the first bearing seat and the second bearing seat penetrate through the inner grinding head, the bottom of the first moving seat is fixedly provided with a fourth motor, the fourth motor is used for driving the inner grinding head to rotate, the second moving seat is provided with a third bearing seat, the third bearing seat penetrates through the outer grinding head, the bottom of the second moving seat is fixedly provided with a fifth motor, and the fifth motor is used for driving the outer grinding head to rotate.

6. A method of using the apparatus for grinding end surfaces of steel pipes according to claim 1, comprising:

placing the steel pipes into a feeding and discharging frame, wherein a front disc at the front end of a dividing disc at an initial position faces to the right, a rear disc faces upwards, the steel pipes are blocked by the front disc, then a first motor is started, the first motor drives the dividing disc to rotate, the front disc faces upwards, the rear disc faces to the left, the steel pipes are divided when the rear disc rotates, other steel pipes except the first steel pipe are blocked, the first steel pipe falls out of the feeding frame after the dividing disc rotates, and the feeding frame falls between division bars on a conveying belt;

starting a second motor, driving a movable arm to move downwards, then starting a first screw motor, driving a clamp to open, enabling a steel pipe to enter below the clamp under the driving of a conveying belt, enabling the clamp to move downwards to two sides of the steel pipe with the aid of the movable arm, then driving the clamp to fold reversely by the first screw motor, adjusting the steel pipe to the right-center position of a polishing mechanism, then driving a first telescopic cylinder, driving the steel pipe by the first telescopic cylinder, enabling the steel pipe to enter into a lower pinch plate and an upper pinch plate, and finally driving the movable arm to move upwards by the second motor;

Starting a second screw motor and a third motor, wherein the third motor drives a driving gear to rotate, the driving gear drives a first driven gear and a second driven gear to fold an upper pinch plate and a lower pinch plate, the front end of a fixed steel tube is clamped, and then a sliding seat is driven by the second screw motor to move upwards, so that the steel tube is aligned with an inner polishing head and an outer polishing head;

Starting a third screw motor and a fourth screw motor, driving a first movable seat to move forward by the third screw motor, turning down a polishing wheel, enabling the lower half part of the polishing wheel to be attached to the front end of a steel pipe for polishing and flattening, turning over again after polishing, then starting the fourth motor, driving an inner polishing head to rotate by the fourth motor, polishing burrs at the inner wall end of the steel pipe by the inner polishing head, driving a second movable seat to move by the fourth screw motor, driving an outer polishing head to rotate by the fifth motor, polishing burrs at the outer wall end of the steel pipe by the outer polishing head, returning to an initial position after polishing, loosening an upper buckle plate, then moving downwards by using a movable arm, clamping the steel pipe by a clamp hand, starting a second telescopic cylinder, driving the movable seat to move backwards, pulling the steel pipe back onto a conveying belt, and taking out the steel pipe under the transmission of the conveying belt to finish work.