阅读说明：本技术 一种钢管桌精准冲裁一次成型模具及冲裁方法 (Steel tube table accurate blanking one-step forming die and blanking method ) 是由 陈舒展 于 2021-09-01 设计创作，主要内容包括：本发明提出一种钢管桌精准冲裁一次成型模具,包括钢管固定器和冲裁器。本发明的一种钢管桌精准冲裁一次成型模具,根据想要的钢管长度,推动移动端带动冲裁刀头在移动滑道滑动,通过指示件在刻度标示的指示得到移动的距离,从而确实要冲裁多少,停止移动端启动冲裁刀头进行冲裁,得到钢管所需长度,只要放置好钢管通过移动冲裁刀头并有刻度标示和指示件的配合,就能很轻易的根据所需长度进行冲裁,增加生产效率。一种钢管桌精准冲裁一次成型冲裁方法,包括如下步骤：a.取钢管放置在钢管固定器内固定。本发明的一种钢管桌精准冲裁一次成型冲裁方法,实现同一机器上可以冲裁不同长度的钢管,且长度可随时自由切换,方便快捷。(The invention provides a steel tube table accurate blanking one-step forming die which comprises a steel tube fixer and a blanking device. According to the steel pipe table accurate blanking one-step forming die, the moving end is pushed to drive the blanking cutter head to slide on the moving slide way according to the required length of a steel pipe, the moving distance is obtained through the indication of the indication piece on the scale mark, so that the blanking amount is really obtained, the moving end is stopped to start the blanking cutter head to perform blanking, the required length of the steel pipe is obtained, and the steel pipe can be easily blanked according to the required length only by placing the steel pipe, moving the blanking cutter head, matching the scale mark and the indication piece, and the production efficiency is improved. A steel tube table accurate blanking one-time forming blanking method comprises the following steps: a. and taking the steel pipe, placing the steel pipe in a steel pipe fixer, and fixing. According to the steel tube table accurate blanking one-step forming blanking method, steel tubes with different lengths can be blanked on the same machine, the lengths can be freely switched at any time, and the method is convenient and rapid.)

1. The utility model provides an accurate blanking one shot forming mould of steel pipe table which characterized in that: the blanking device is arranged above the steel pipe fixer; the blanking device comprises a movable slide way, a movable end and a blanking cutter head, wherein the movable end is movably arranged on the movable slide way, the movable slide way is provided with scale marks along the direction of the movable end, an indicating piece for indicating the scale marks is formed on the movable end, the blanking cutter head is arranged below the movable end, and the blanking cutter head is arranged in the movable slide way.

2. The accurate blanking one shot forming mould of steel pipe table of claim 1, characterized in that: the movable slideway comprises a guide channel and a cavity, the guide channel is positioned at the top of the cavity, a guide block is connected between the movable end and the blanking tool bit, and the guide block is embedded in the guide channel; the blanking tool bit is arranged in the cavity, guide racks are respectively installed at the top and the bottom of the cavity, guide gears are installed on the sides of the blanking tool bit, and the guide gears are matched with the guide racks.

3. The accurate blanking one shot forming mould of steel pipe table of claim 2, characterized in that: the cavity is provided with an opening for lifting the blanking cutter head, and the opening extends along the moving direction of the blanking cutter head.

4. The accurate blanking one shot forming mould of steel pipe table of claim 1, characterized in that: the steel pipe fixer comprises an accommodating pipeline for accommodating a steel pipe, the accommodating pipeline comprises an inlet and an outlet which are coaxially arranged, a first stabilizer is installed on the inlet, a second stabilizer is installed on the outlet, an outlet pipe channel is formed in the side wall of the accommodating pipeline, a pipe pusher is installed on one side wall of the accommodating pipeline, which is symmetrical to the side wall, and the outlet pipe channel is located on the side wall between the inlet and the outlet.

5. The accurate blanking one shot forming mould of steel pipe table of claim 4, characterized in that: the first stabilizer comprises a first protection shell and two first clamping claws, a first through hole communicated with the inlet is formed in the first protection shell, and the two first clamping claws are symmetrically arranged on two sides of the first protection shell; the first clamping gripper comprises a clamping head and a first pushing cylinder, the first pushing cylinder is fixed on the first protection shell, the clamping head is fixed on the output end of the first pushing cylinder, and the side edge of the clamping head facing the first through hole is higher than the other symmetrical edge; the clamp head includes a plurality of mutual sliding connection's first tight piece of clamp, the output of first promotion cylinder has first propelling movement frame according to grabbing, the propelling movement frame includes push rod, pole setting and two connecting rods, the output at first promotion cylinder is fixed to the one end of push rod, the other end of push rod is connected in the pole setting interlude, and the both ends in the pole setting are connected respectively to the one end of two connecting rods, and the other end of one of them connecting rod is connected on a plurality of first tight pieces of clamp of the top of clamp, and the other end of another connecting rod is on the first tight piece of clamp of a plurality of first tight piece of clamp bottom.

6. The accurate blanking one shot forming mould of steel pipe table of claim 4, characterized in that: the second stabilizer comprises a second protective shell and two second clamping claws, the second protective shell is provided with an accommodating groove which is coaxially arranged with the output port and communicated with the output port, and the two second clamping claws are symmetrically arranged at two sides of the second protective shell; the second clamping claw comprises a clamping head and a second pushing cylinder, the second pushing cylinder is fixed on the second protective shell, the clamping head is fixed on the output end of the second pushing cylinder, and the side edge of the clamping head facing the accommodating groove is higher than the other symmetrical edge; the clamp head comprises a plurality of mutually sliding connected second clamping blocks, the output end of the second pushing cylinder is provided with a second pushing frame according to the grasping, the pushing frame comprises a push rod, a vertical rod and two connecting rods, one end of the push rod is fixed at the output end of the second pushing cylinder, the other end of the push rod is connected to the middle section of the vertical rod, one ends of the two connecting rods are respectively connected to two ends of the vertical rod, the other end of one connecting rod is connected to the second clamping block at the top end of the plurality of second clamping blocks, and the other end of the other connecting rod is connected to the second clamping block at the bottom end of the plurality of second clamping blocks.

7. The accurate blanking one shot forming mould of steel pipe table of claim 4, characterized in that: still include the storage ware, the storage ware includes first cavity, second cavity, transmission band and a plurality of backup pad, first cavity is linked together with exit tube passageway, the second cavity is connected the setting side by side with first cavity, the second cavity is equipped with upper and lower opening and is linked together with first cavity, the transmission band is installed between first cavity and second cavity to pass upper and lower opening setting, a plurality of backup pads are connected on the transmission band along the length equidistance of transmission band, the roller bearing is installed to opening part about second cavity and the connecting wall of first cavity are located, the inner wall setting of roller bearing laminating transmission band.

8. The accurate blanking one shot forming mould of steel pipe table of claim 7, characterized in that: the accommodating pipeline is internally provided with a bearing part, the bearing part is obliquely arranged from low to high towards the first cavity, and the lower end of the bearing part is sunken to form an arc-shaped groove matched with the steel pipe.

9. The blanking method of the steel tube table precision blanking one-step forming die based on the claims 1-8 is characterized by comprising the following steps:

a. placing the steel pipe in a steel pipe fixer for fixing;

b. the moving end moves to adjust the position according to the length of the steel pipe to be blanked;

c. the blanking cutter head performs blanking;

d. and taking out the punched steel pipe.

10. The steel tube table accurate blanking one-step forming blanking method according to claim 9, characterized in that: in the step b, the moving end moves on the moving slide way, the moving slide way moves to a proper position through the matching of the indicating piece and the scale marks according to the length of the steel pipe, and then the blanking cutter head is started to perform punching.

Technical Field

The invention relates to the technical field of steel pipe processing, in particular to a steel pipe table accurate blanking one-step forming die and a blanking method.

Background

In the steel pipe blanking process, the position to be blanked is usually measured and depicted on the steel pipe, then the steel pipe is blanked, and the length of the steel pipe used by the steel pipe table is different, so that the length of the steel pipe is measured all the time in the blanking process, or machines with different blanking lengths are replaced, the steel pipe blanking table is very inconvenient, the work progress is influenced, and the production efficiency is reduced.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

The invention aims to provide automatic ranging blanking of a steel pipe table accurate blanking one-step forming die.

The invention aims to provide a steel tube table accurate blanking one-time forming blanking method which is convenient and fast.

In order to achieve the purpose, the invention adopts the following technical scheme:

a steel tube table accurate blanking one-step forming die comprises a steel tube fixing device and a blanking device, wherein the blanking device is arranged above the steel tube fixing device; the blanking device comprises a movable slide way, a movable end and a blanking cutter head, wherein the movable end is movably arranged on the movable slide way, the movable slide way is provided with scale marks along the direction of the movable end, an indicating piece for indicating the scale marks is formed on the movable end, the blanking cutter head is arranged below the movable end, and the blanking cutter head is arranged in the movable slide way.

The movable slideway comprises a guide channel and a cavity, the guide channel is positioned at the top of the cavity, a guide block is connected between the movable end and the blanking tool bit, and the guide block is embedded in the guide channel; the blanking tool bit is arranged in the cavity, guide racks are respectively installed at the top and the bottom of the cavity, guide gears are installed on the sides of the blanking tool bit, and the guide gears are matched with the guide racks.

The cavity is provided with an opening for lifting the blanking cutter head, and the opening extends along the moving direction of the blanking cutter head.

The steel pipe fixer comprises an accommodating pipeline for accommodating a steel pipe, the accommodating pipeline comprises an inlet and an outlet which are coaxially arranged, a first stabilizer is installed on the inlet, a second stabilizer is installed on the outlet, an outlet pipe channel is formed in the side wall of the accommodating pipeline, a pipe pusher is installed on one side wall of the accommodating pipeline, which is symmetrical to the side wall, and the outlet pipe channel is located on the side wall between the inlet and the outlet.

The first stabilizer comprises a first protection shell and two first clamping claws, a first through hole communicated with the inlet is formed in the first protection shell, and the two first clamping claws are symmetrically arranged on two sides of the first protection shell; the first clamping gripper comprises a clamping head and a first pushing cylinder, the first pushing cylinder is fixed on the first protection shell, the clamping head is fixed on the output end of the first pushing cylinder, and the side edge of the clamping head facing the first through hole is higher than the other symmetrical edge; the clamp head includes a plurality of mutual sliding connection's first tight piece of clamp, the output of first promotion cylinder has first propelling movement frame according to grabbing, the propelling movement frame includes push rod, pole setting and two connecting rods, the output at first promotion cylinder is fixed to the one end of push rod, the other end of push rod is connected in the pole setting interlude, and the both ends in the pole setting are connected respectively to the one end of two connecting rods, and the other end of one of them connecting rod is connected on a plurality of first tight pieces of clamp of the top of clamp, and the other end of another connecting rod is on the first tight piece of clamp of a plurality of first tight piece of clamp bottom.

The second stabilizer comprises a second protective shell and two second clamping claws, the second protective shell is provided with an accommodating groove which is coaxially arranged with the output port and communicated with the output port, and the two second clamping claws are symmetrically arranged at two sides of the second protective shell; the second clamping claw comprises a clamping head and a second pushing cylinder, the second pushing cylinder is fixed on the second protective shell, the clamping head is fixed on the output end of the second pushing cylinder, and the side edge of the clamping head facing the accommodating groove is higher than the other symmetrical edge; the clamp head comprises a plurality of mutually sliding connected second clamping blocks, the output end of the second pushing cylinder is provided with a second pushing frame according to the grasping, the pushing frame comprises a push rod, a vertical rod and two connecting rods, one end of the push rod is fixed at the output end of the second pushing cylinder, the other end of the push rod is connected to the middle section of the vertical rod, one ends of the two connecting rods are respectively connected to two ends of the vertical rod, the other end of one connecting rod is connected to the second clamping block at the top end of the plurality of second clamping blocks, and the other end of the other connecting rod is connected to the second clamping block at the bottom end of the plurality of second clamping blocks.

Still include the storage ware, the storage ware includes first cavity, second cavity, transmission band and a plurality of backup pad, first cavity is linked together with exit tube passageway, the second cavity is connected the setting side by side with first cavity, the second cavity is equipped with upper and lower opening and is linked together with first cavity, the transmission band is installed between first cavity and second cavity to pass upper and lower opening setting, a plurality of backup pads are connected on the transmission band along the length equidistance of transmission band, the roller bearing is installed to opening part about second cavity and the connecting wall of first cavity are located, the inner wall setting of roller bearing laminating transmission band.

The accommodating pipeline is internally provided with a bearing part, the bearing part is obliquely arranged from low to high towards the first cavity, and the lower end of the bearing part is sunken to form an arc-shaped groove matched with the steel pipe.

A steel tube table accurate blanking one-time forming blanking method comprises the following steps:

a. placing the steel pipe in a steel pipe fixer for fixing;

b. the moving end moves to adjust the position according to the length of the steel pipe to be blanked;

c. the blanking cutter head performs blanking;

d. and taking out the punched steel pipe.

In the step b, the moving end moves on the moving slide way, the moving slide way moves to a proper position through the matching of the indicating piece and the scale marks according to the length of the steel pipe, and then the blanking cutter head is started to perform punching.

After the technical scheme is adopted, according to the steel pipe accurate blanking one-step forming die, the moving end is pushed to drive the blanking cutter head to slide on the moving slide way according to the required length of a steel pipe, the moving distance is obtained through the indication of the indication piece on the scale mark, so that the blanking amount is really needed, the moving end is stopped to start the blanking cutter head to perform blanking, the required length of the steel pipe is obtained, the steel pipe can be easily blanked according to the required length as long as the steel pipe is placed, the required blanking position is not required to be well marked on the steel pipe, and then the blanking is performed, so that the production efficiency is increased.

According to the steel tube table accurate blanking one-step forming blanking method, steel tubes with different lengths can be blanked on the same machine, the lengths can be freely switched at any time, and the method is convenient and rapid.

Drawings

FIG. 1 is a schematic structural view of a forming mold according to the present invention;

fig. 2 is a schematic cross-sectional view of the clicker according to the present invention;

fig. 3 is an enlarged schematic view of the section a of the blanking device according to the invention;

FIG. 4 is a schematic cross-sectional view of a first stabilizer according to the present invention;

FIG. 5 is a schematic cross-sectional view of a second stabilizer according to the present invention;

fig. 6 is a schematic sectional view of the storage device of the present invention.

In the figure:

the pipe fixing device comprises a steel pipe fixing device 1, an accommodating pipeline 11, a first stabilizer 12, a second stabilizer 13, a pipe outlet channel 14, a pipe pushing device 15, a first protecting shell 16, a first through hole 17, a first pushing cylinder 18, a first clamping block 19, a first pushing frame 110, a second protecting shell 111, an accommodating groove 112, a second pushing cylinder 113, a second clamping block 114, a second pushing frame 115 and a supporting part 116;

the device comprises a movable slide way 2, a scale mark 21, a guide channel 22, a cavity 23, a guide block 24, a guide rack 25, a guide gear 26 and an opening 27;

the moving end 3, the indicator 31;

a blanking cutter head 4;

a pipe storage device 5, a first chamber 51, a second chamber 52, a transmission belt 53, a support plate 54 and a roller 55.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

The invention discloses a steel tube table accurate blanking one-step forming die, which comprises a steel tube fixing device 1 and a blanking device, wherein the blanking device is arranged above the steel tube fixing device 1, as shown in figures 1-6; the blanking device comprises a movable slide 2, a movable end 3 and a blanking cutter head 4, wherein the movable end 3 is movably arranged on the movable slide 2, the movable slide 2 is provided with scale marks 21 along the direction of the movable end 3, an indicating piece 31 for indicating the scale marks 21 is formed on the movable end 3, the blanking cutter head 4 is arranged below the movable end 3, and the blanking cutter head 4 is arranged in the movable slide 2. According to the desired steel pipe length, the moving end 3 is pushed to drive the blanking cutter head 4 to slide on the moving slide way 2, the indication of the scale mark 21 through the indicating piece 31 obtains the moving distance, so that the blanking is really needed, the moving end 3 is stopped to start the blanking cutter head 4 to perform blanking, the required length of the steel pipe is obtained, as long as the steel pipe is placed, the blanking can be easily performed according to the required length by moving the blanking cutter head 4 and matching of the scale mark 21 and the indicating piece 31, the position to be blanked is not required to be well carved on the steel pipe, the blanking is performed again, and the production efficiency is increased.

Preferably, the moving slideway 2 comprises a guide channel 22 and a cavity 23, the guide channel 22 is positioned at the top of the cavity 23, a guide block 24 is connected between the moving end 3 and the blanking bit 4, and the guide block 24 is embedded in the guide channel 22; the blanking cutter head 4 is arranged in the cavity 23, the top and the bottom of the cavity 23 are respectively provided with a guide rack 25, the side of the blanking cutter head 4 is provided with a guide gear 26, and the guide gear 26 is matched with the guide rack 25. The movable end 3 is stably moved through the matching of the guide block 24 and the guide channel 22, the guide gear 26 on the blanking cutter head 4 is matched with the guide rack 25 in the cavity 23, and the guide gear 26 rotates along the guide rack 25 in a tooth-tooth manner in the moving process, so that a small distance is formed by crossing over one tooth, the moving distance can be more easily grasped relative to the flat pulley in the moving process, and the accuracy of the moving distance is improved.

Preferably, the cavity 23 is opened with an opening 27 for lifting and lowering the blanking blade 4, and the opening 27 extends along the moving direction of the blanking blade 4. The blanking tool bit 4 is convenient to descend for blanking the steel pipe.

Preferably, the steel pipe fixer 1 includes a holding pipe 11 for holding the steel pipe, the holding pipe 11 includes an inlet port and an outlet port coaxially disposed, the inlet port is mounted with the first stabilizer 12, the outlet port is mounted with the second stabilizer 13, the side wall of the holding pipe 11 is provided with an outlet pipe channel 14, a pipe pusher 15 is mounted on a side wall symmetrical to the side wall, and the outlet pipe channel 14 is located on the side wall between the inlet port and the outlet port. The steel pipe penetrates from the inlet to move to the outlet, the steel pipe is stably fixed through the first stabilizer 12 and the second stabilizer 13, and after blanking is completed, the steel pipe is pushed out from the pipe outlet channel 14 through the pipe pusher 15 and then extends into the steel pipe to perform next blanking.

Preferably, the first stabilizer 12 includes a first protective shell 16 and two first clamping jaws, the first protective shell 16 is formed with a first through hole 17 communicating with the inlet port, and the two first clamping jaws are symmetrically disposed at both sides of the first protective shell 16; the first clamping gripper comprises a clamping head and a first pushing cylinder 18, the first pushing cylinder 18 is fixed on the first protection shell 16, the clamping head is fixed on the output end of the first pushing cylinder 18, and the side edge of the clamping head facing the first through hole 17 is higher than the other symmetrical edge; the clamp head includes a plurality of mutual sliding connection's first clamp piece 19, the output of first promotion cylinder 18 is according to having grabbed first push frame 110, push frame includes the push rod, pole setting and two connecting rods, the output at first promotion cylinder 18 is fixed to the one end of push rod, the other end of push rod is connected on the pole setting interlude, the both ends in the pole setting are connected respectively to the one end of two connecting rods, the other end of one of them connecting rod is connected on a plurality of first clamp piece 19 at the top, the other end of another connecting rod is on a plurality of first clamp piece 19 at the bottom. The steel pipe passes through first through-hole 17 and gets into in the holding pipeline 11 from the inlet port through first protecting crust 16, then first pushing cylinder 18 drive pushing frame drive a plurality of first clamp tight piece 19 and move towards the steel pipe, is in the contact with the steel pipe first in the middle, just supports other first clamp tight piece 19 on the steel pipe and can continue to move along with first pushing cylinder 18 and support the arc wall of steel pipe to can adapt to the steel pipe of different diameters size.

Preferably, the second stabilizer 13 includes a second protective shell 111 and two second clamping claws, the second protective shell 111 is formed with an accommodating groove 112 coaxially arranged with the output port and communicated with the output port, and the two second clamping claws are symmetrically arranged at two sides of the second protective shell 111; the second clamping gripper comprises a clamping head and a second pushing cylinder 113, the second pushing cylinder 113 is fixed on the second protective shell 111, the clamping head is fixed on the output end of the second pushing cylinder 113, and the side edge of the clamping head facing the accommodating groove 112 is higher than the other symmetrical edge; the clamping head comprises a plurality of second clamping blocks 114 which are connected in a sliding mode, the output end of the second pushing cylinder 113 is provided with a second pushing frame 115 in a clamping mode, the pushing frame comprises a push rod, a vertical rod and two connecting rods, one end of the push rod is fixed at the output end of the second pushing cylinder 113, the other end of the push rod is connected to the middle section of the vertical rod, one ends of the two connecting rods are connected to two ends of the vertical rod respectively, the other end of one connecting rod is connected to the second clamping block 114 at the top end of each second clamping block 114, and the other end of the other connecting rod is arranged on the second clamping block 114 at the bottom end of each second clamping block 114. The steel pipe passes through the output port and enters the accommodating groove 112, then the second pushing cylinder 113 drives the pushing frame to drive the plurality of second clamping blocks 114 to move towards the steel pipe, the steel pipe at the middle first contacts, and other second clamping blocks 114 which are abutted against the steel pipe can continuously move along with the second pushing cylinder 113 and abut against the arc surface of the steel pipe, so that the steel pipe clamping device can adapt to steel pipes with different diameters.

Preferably, the first clamping block 19 and the second clamping block 114 are provided with anti-skid rubber pads in contact with the steel pipe. Preventing the slipping clamp from being unstable.

Preferably, still include storage device 5, storage device 5 includes first cavity 51, second cavity 52, transmission band 53 and a plurality of backup pad 54, first cavity 51 is linked together with exit tube passageway 14, second cavity 52 is connected the setting with first cavity 51 side by side, second cavity 52 is equipped with upper and lower opening and is linked together with first cavity 51, transmission band 53 installs between first cavity 51 and second cavity 52, and pass upper and lower opening setting, a plurality of backup pads 54 are connected on transmission band 53 along the length equidistance of transmission band 53, the connecting wall of second cavity 52 and first cavity 51 is located upper and lower opening and is installed roller 55, roller 55 laminates the inner wall setting of transmission band 53. An outlet is formed in the top end of the first cavity 51, so that a steel pipe can be conveniently taken out, the steel pipe after blanking is completed is pushed towards the pipe outlet channel 14 through the pipe pusher 15, the steel pipe is placed in the first cavity 51 and then is rotated through the transmission belt 53 to drive the supporting plate 54 to drag the lower portion of the steel pipe to move towards the outlet of the first cavity 51, the actions are repeated, one steel pipe is conveyed, and workers can conveniently take the steel pipe away.

Preferably, the accommodating pipe 11 is internally provided with a supporting part 116, the supporting part 116 is obliquely arranged from low to high towards the first chamber 51, and the lower end of the supporting part 116 is recessed to form an arc-shaped groove adapted to the steel pipe. The tube pusher 15 pushes the punched steel tube toward the first chamber 51 along the supporting portion 116, the steel tube is pushed to the highest point of the supporting portion 116 to stop leaking one of the three steel tubes, so that the steel tube is not pushed out of the supporting portion 116, then the conveying belt 53 drives the supporting plate 54 to move to the first chamber 51 and contact the steel tube, then the tube pusher 15 continues to push the steel tube to move to the supporting plate 54, and the conveying belt 53 continues to drive the supporting plate 54 to move so as to lift the steel tube.

Preferably, the side wall of the pipe storage 5 is provided with a slide rail, the moving end 3 is provided with a driving wheel corresponding to the slide rail, and the driving wheel is arranged on the slide rail in a rolling manner. The self-service movement of the mobile terminal 3 is realized through the driving of the driving wheel.

Preferably, the blanking cutter head 4 comprises a lifter connected with the moving end 3 and a cutter head fixed at the output end of the lifter, two supporting and positioning parts are installed below the lifter, the two supporting and positioning parts are symmetrically two sides of the cutter head, and rubber heads are installed on the contact surfaces of the supporting and positioning parts and the steel pipes. The tool bit is driven by the lifter to descend together with the two supporting positioning parts, then the rubber heads on the supporting positioning parts are attached to the steel pipe to form a positioning effect, and then the tool bit is blanked.

A steel tube table accurate blanking one-time forming blanking method comprises the following steps:

a. placing the steel pipe in a steel pipe fixer 1 for fixing;

b. the moving end 3 moves to adjust the position according to the length of the steel pipe to be punched;

c. the blanking cutter head 4 performs blanking;

d. and taking out the punched steel pipe.

The steel pipes with different lengths can be blanked on the same machine, the lengths can be freely switched at any time, and the blanking device is convenient and fast.

Preferably, in step b, the moving end 3 moves on the moving slideway 2, the moving slideway 2 moves to a proper position through the matching of the indicator 31 and the scale mark 21 according to the length of the steel pipe, and then the blanking cutter head 4 is started to perform the blanking.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.