High speed continuous flying shear and shearing method thereof

Abstract

The application discloses a high-speed continuous flying shear and a shearing method thereof. The high-speed continuous flying shear comprises an upper blade disc and a lower blade disc. A plurality of upper broken shear blades are arranged on the upper blade disc. Upper head shear blades and upper tail shear blades are arranged on the upper blade disc at intervals of 180 degrees. A plurality of lower broken shear blades are arranged on the lower blade disc. Lower head shear blades and lower tail shear blades are arranged on the lower blade disc at intervals of 180 degrees. Each of the upper broken shear blades is located on the steel entry side when running to a shear blade closing point. Each of the lower broken shear blades is located on the steel exit side when running to the shear blade closing point. The upper head shear blades and the lower tail shear blades are located on the steel exit side when running to the shear blade closing point. The lower head shear blades and the upper tail shear blades are located on the steel entry side when running to the shear blade closing point. The application can avoid the secondary shearing of a rolled piece by subsequent shear blades during the rolling piece swinging process, and realize shearing of a rolled piece with a higher running speed.

Description

Technical Field

[0001] This invention relates to the field of metallurgical machinery and equipment, and in particular to a high-speed continuous flying shear and its shearing method in a high-speed wire rod production line. Background Technology

[0002] With the development of high-speed wire rod production lines in metallurgical steel rolling, the rolling speed of high-speed finishing mills on these lines is increasing (currently reaching a maximum exit speed of 110 m / s). Furthermore, to improve product quality and dimensional accuracy, downstream sizing mills have been successively installed (currently reaching a maximum exit speed of 120 m / s). However, due to the location of the controlled cooling equipment within the mill, the original start-stop flying shears located at the mill inlet could no longer meet the production line's shearing speed requirements. Therefore, most start-stop flying shears have been replaced with high-speed continuous flying shears. These flying shears operate continuously, with a servo-driven switch at the front to switch the inlet guide tube entering the shear's shearing range between the rolling channel and the breaking channel. This allows the continuous flying shear to perform head-cutting, tail-cutting, and breaking functions on the high-speed rolled pieces running in the inlet guide tube. This type of continuous flying shear significantly increases the upper speed limit of the rolled pieces that can be sheared, adapting to high-speed rolled pieces with operating speeds of 40 m / s and below. However, the speed of the rolled pieces entering the spinning mill or reducing mill unit far exceeds the previous speed limit (the current maximum speed limit for rolled pieces is 120m / s). Conventional high-speed continuous flying shear shearing methods can no longer adapt to such high-speed rolled pieces. To address the above problems, a new type of high-speed continuous flying shear shearing method is the key to accurately shearing rolled pieces running at such high speeds. At the same time, the stability of this method has also become a technical challenge.

[0003] Typically, in existing high-speed continuous shears, the inlet switch, continuous shear, and outlet steel-separating guide chute are arranged sequentially along the rolling line direction. The inlet switch, through servo drive and inlet guide tube, switches the high-speed rolled piece within the shearing range of the flying shear between the rolling channel and the breaking channel in the outlet steel-separating guide chute. This allows the continuous disc shear to perform head-cutting, tail-cutting, and breaking functions on the high-speed rolled piece running in the inlet guide tube. The cut-off head of the rolled piece enters the breaking channel, while subsequent rolled pieces are switched back to the rolling channel to continue running.

[0004] The continuous disc shear operates on the principle of shearing the head or tail of the rolled piece in the break-off channel of the exit steel guide groove. Then, the inlet switch quickly swings the inlet guide tube from the break-off channel across the channel divider to the rolling channel, allowing the cut-off head of the rolled piece to fall into the break-off channel while the remaining rolled piece continues its journey into the rolling channel. This shearing method has the following disadvantages: 1) The distance between the shearing point and the channel partition plate significantly affects the upper limit of the running speed of the rolled piece. If this size is designed too small, the rolled piece in the inlet guide will hit the channel partition plate during the process of swinging over the channel partition plate to align with the rolling channel, causing a steel pile-up accident. If this size is designed too large, the cut-off head of the rolled piece will be carried into the rolling channel, also causing a steel pile-up accident.

[0005] 2) Since all shear blades are designed to be arranged with equal width, whether a single cutter head has three shear blades evenly arranged or four shear blades evenly arranged, there will be a phenomenon of secondary shearing of the rolled piece by the subsequent shear blades during the process of the rolled piece swinging into the rolling channel, which will cause steel piling accidents.

[0006] Therefore, based on years of experience and practice in related industries, the inventor proposes a high-speed continuous flying shear and its shearing method to overcome the shortcomings of existing technologies. Summary of the Invention

[0007] The purpose of this invention is to provide a high-speed continuous flying shear and its shearing method. It adopts a novel arrangement of non-uniform width shear blades and an outlet steel guide channel arrangement, which can solve the functional contradiction between the shearing point and the channel partition plate size, and avoid the secondary shearing phenomenon of subsequent shear blades on the rolled piece during the oscillation process, thus enabling the shearing of rolled pieces with higher operating speeds.

[0008] The objective of this invention is achieved as follows: a high-speed continuous flying shear includes an upper cutter head and a lower cutter head. The upper cutter head has multiple upper breaking shear blades evenly spaced along its circumference, and upper cutting head and upper cutting tail shear blades are spaced at 180° intervals along its upper edge. The lower cutter head has multiple lower breaking shear blades evenly spaced along its circumference, and lower cutting head and lower cutting tail shear blades are spaced at 180° intervals along its upper edge. Each upper breaking shear blade is located on the steel inlet side when it reaches the shear blade closure point, and each is arranged on a single side. Each lower breaking shear blade... All blades are located on the steel tapping side and are arranged on one side only. The upper cutting head blade and the lower cutting tail blade are both located on the steel tapping side when they reach the blade closing point, while the lower cutting head blade and the upper cutting tail blade are both located on the steel inlet side when they reach the blade closing point. The upper cutting head blade, the upper cutting tail blade, the lower cutting head blade, and the lower cutting tail blade are arranged on one side only and are staggered from each of the upper and lower breaking blades. The steel tapping side of the upper and lower cutter heads is provided with an outlet steel separating guide groove, which is divided into a rolling channel and a breaking channel.

[0009] In a preferred embodiment of the present invention, the blade width of each of the upper shredding blades is set to be the same, and the blade width of each of the lower shredding blades is set to be the same; the blade width of the upper shredding blade, the upper head cutting blade, the upper tail cutting blade, the lower shredding blade, the lower head cutting blade, and the lower tail cutting blade are set to be different.

[0010] In a preferred embodiment of the present invention, four upper breaking shear blades are evenly spaced along the circumference of the upper cutter disc, an upper cutting head shear blade is provided on the steel exit side of one of the upper breaking shear blades, and an upper cutting tail shear blade is provided on the steel entry side of another upper breaking shear blade spaced at 180° intervals; four lower breaking shear blades are evenly spaced along the circumference of the lower cutter disc, a lower cutting head shear blade is provided on the steel entry side of one of the lower breaking shear blades, and a lower cutting tail shear blade is provided on the steel exit side of another lower breaking shear blade spaced at 180° intervals.

[0011] In a preferred embodiment of the present invention, a horizontal partition plate and a vertical partition plate are provided in the outlet steel guide channel, and the horizontal partition plate and the vertical partition plate divide the vertical plane and the horizontal plane into a rolling channel and a breaking channel.

[0012] The object of the present invention can also be achieved as follows: a shearing method of a high-speed continuous flying shear, comprising: the workpiece enters the high-speed continuous flying shear as described above under the guidance of the inlet guide tube; the upper and lower shear blades break and shear the head of the workpiece while pressing the head of the workpiece below the horizontal shearing center line; the upper and lower shear blades shear the head of the workpiece; the head of the workpiece falls into the breaking channel; the workpiece is introduced into the rolling channel; and the head of the workpiece is separated from the workpiece.

[0013] In a preferred embodiment of the present invention, the rolled piece enters the shearing zone of the high-speed continuous flying shear through the inlet guide pipe, at which time the inlet guide pipe is located in the breaking channel of the outlet steel separating guide groove.

[0014] In a preferred embodiment of the present invention, the upper and lower shear blades shear the rolled piece on the steel inlet side at the shear blade closure point. The sheared head of the rolled piece falls into the shearing channel, while the unsheared head of the rolled piece is forcibly pressed below the horizontal shearing center line.

[0015] In a preferred embodiment of the present invention, the inlet guide oscillates toward the rolling channel, and the head of the rolled piece, pressed below the horizontal shearing center line, passes over the vertical partition plate and runs into the break channel below the rolling channel, waiting for the upper and lower cutting blades to shear its head.

[0016] In a preferred embodiment of the present invention, the upper and lower shear blades shear the head of the rolled piece at the steel tapping side of the shear blade closure point. The head of the rolled piece enters the breaking channel, and the rolled piece is forcibly lifted by the lower shear blade and passes over the horizontal partition plate. The rolled piece is then guided into the rolling channel, and the head of the rolled piece separates from the rolled piece.

[0017] As described above, the high-speed continuous flying shear and its shearing method of the present invention have the following beneficial effects: The high-speed continuous flying shear of this invention has the upper breaking shear blade located on the steel inlet side when it reaches the shear blade closure point, and the lower breaking shear blade located on the steel outlet side when it reaches the shear blade closure point. The upper head cutting shear blade and the lower tail cutting shear blade are both located on the steel outlet side when they reach the shear blade closure point, while the lower head cutting shear blade and the upper tail cutting shear blade are both located on the steel inlet side when they reach the shear blade closure point. The outlet steel guide groove is divided into a rolling channel and a breaking channel, which can prevent the head of the rolled piece being carried into the rolling channel and causing steel pile-up accidents. It can significantly increase the upper limit of the continuous shear speed for rolling pieces, and can shear pieces with a maximum speed of 150m / s. At the same time, the non-overlapping arrangement of each shear blade also avoids the phenomenon of the rolled piece being sheared twice, making the operation of the high-speed continuous flying shear more stable and reliable. The high-speed continuous flying shear of this invention, used for head cutting, tail cutting, and fragmentation of rolled pieces, has at least the following advantages: 1) The arrangement of the shear blades and the exit guide groove of the high-speed continuous flying shear prevents the head of the rolled piece from being carried into the rolling channel, and at the same time, it can significantly increase the upper limit of the shearing speed of the high-speed continuous flying shear, which can shear rolled pieces at a maximum speed of 150 m / s. 2) It solves the problem of secondary shearing of rolled pieces, making the operation of the high-speed continuous flying shear more stable and reliable. Attached Figure Description

[0018] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein: Figure 1 : This is a schematic diagram of the high-speed continuous flying shear of the present invention.

[0019] Figure 2 : This is a side view of the high-speed continuous flying shear of the present invention.

[0020] Figure 3-a1 : This is a schematic diagram of step a of the high-speed continuous flying shear cutting method of the present invention.

[0021] Figure 3-a2 :for Figure 3-a1 View from direction A.

[0022] Figure 3-b1 : This is a schematic diagram of step b of the high-speed continuous flying shear of the present invention.

[0023] Figure 3-b2 :for Figure 3-b1 View from direction A.

[0024] Figure 3-c1 : This is a schematic diagram of step c of the high-speed continuous flying shear of the present invention.

[0025] Figure 3-c2 :for Figure 3-c1 View from direction A.

[0026] Figure 3-d1 : This is a schematic diagram of step d of the high-speed continuous flying shear of the present invention.

[0027] Figure 3-d2 :for Figure 3-d1 View from direction A.

[0028] In the picture: 1. Upper blade plate; 11. Upper cutting blade; 12. Upper head cutting blade; 13. Upper tail cutting blade; 2. Lower blade; 21. Lower cutting blade; 22. Lower head cutting blade; 23. Lower tail cutting blade; 3. Outlet steel guide channel; 31. Horizontal partition plate; 32. Vertical partition plate; 4. Rolling channel; 5. Broken passageway; 6. Rolled piece; 61. Head of rolled piece; 7. Inlet catheter. Detailed Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0030] The specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "linked" should be interpreted broadly; for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figure 1 , Figure 2 As shown, this invention provides a high-speed continuous flying shear, including an upper cutter head 1 and a lower cutter head 2. The upper cutter head 1 has multiple upper breaking shear blades 11 evenly spaced along its circumference, and upper cutting head shear blades 12 and upper cutting tail shear blades 13 spaced at 180° intervals along its upper edge. The lower cutter head 2 has multiple lower breaking shear blades 21 evenly spaced along its circumference, and lower cutting head shear blades 22 and lower cutting tail shear blades 23 spaced at 180° intervals along its upper edge. Each upper breaking shear blade 11 is located on the steel inlet side when it reaches the shear blade closure point, and is arranged on one side only. Each lower breaking shear blade 21 is located on the steel inlet side when it reaches the shear blade closure point. When the blades close, they are all located on the steel discharge side and are arranged on one side. The upper cutting head blade 12 and the lower cutting tail blade 23 are both located on the steel discharge side when they reach the blade closure point, while the lower cutting head blade 22 and the upper cutting tail blade 13 are both located on the steel inlet side. The upper cutting head blade 12, the upper cutting tail blade 13, the lower cutting head blade 22, and the lower cutting tail blade 23 are arranged on one side and are staggered from each of the upper and lower breaking blades. The steel discharge side of the upper cutter head 1 and the lower cutter head 2 is provided with an outlet steel distribution guide groove 3, which is divided into a rolling channel 4 and a breaking channel 5.

[0033] In this invention, the high-speed continuous flying shear has the upper breaking shear blade located on the steel inlet side when it reaches the shear blade closure point, and the lower breaking shear blade located on the steel outlet side. The upper head cutting shear blade and the lower tail cutting shear blade are both located on the steel outlet side when they reach the shear blade closure point, while the lower head cutting shear blade and the upper tail cutting shear blade are both located on the steel inlet side. The outlet steel guide groove is divided into a rolling channel and a breaking channel, which can prevent the head of the sheared workpiece from being carried into the rolling channel, causing steel pile-up accidents. This significantly increases the upper speed limit of the continuous shear for shearing workpieces, allowing it to shear workpieces with a maximum speed of 150 m / s. Simultaneously, the non-overlapping arrangement of the shear blades avoids the phenomenon of secondary shearing of the workpiece, making the high-speed continuous flying shear operation more stable and reliable.

[0034] Furthermore, the blade widths of all upper shear blades 11 are set to be the same, and the blade widths of all lower shear blades 21 are set to be the same; the blade widths of the upper shear blades 11, upper head shear blades 12, upper tail shear blades 13, lower shear blades 21, lower head shear blades 22, and lower tail shear blades 23 are set to be different. This novel arrangement of non-uniform blade widths avoids the phenomenon of secondary shearing of the rolled workpiece.

[0035] Furthermore, such as Figure 1 As shown, four upper breaking shear blades 11 are evenly spaced along the circumference of the upper cutter disc 1. An upper cutting head shear blade 12 is provided on the steel exit side of one upper breaking shear blade 11, and an upper cutting tail shear blade 13 is provided on the steel entry side of another upper breaking shear blade 11 spaced at 180° intervals. Four lower breaking shear blades 21 are evenly spaced along the circumference of the lower cutter disc 2. A lower cutting head shear blade 22 is provided on the steel entry side of one lower breaking shear blade 21, and a lower cutting tail shear blade 23 is provided on the steel exit side of another lower breaking shear blade 21 spaced at 180° intervals.

[0036] Furthermore, such as Figure 1 As shown, a horizontal partition plate 31 and a vertical partition plate 32 are provided in the outlet steel guide channel 3. The horizontal partition plate 31 and the vertical partition plate 32 divide the vertical plane and the horizontal plane into the rolling channel 4 and the breaking channel 5.

[0037] This invention provides a shearing method for a high-speed continuous flying shear, comprising: the workpiece 6 enters the aforementioned high-speed continuous flying shear under the guidance of the inlet guide 7 (existing technology); the upper breaking shear blade 11 and the lower breaking shear blade 21 break and shear the head 61 of the workpiece while pressing the head of the workpiece below the horizontal shearing center line; the upper cutting head shear blade 12 and the lower cutting head shear blade 22 shear the head of the workpiece; the head of the workpiece falls into the breaking channel; the workpiece 6 is introduced into the rolling channel 4; and the head 61 of the workpiece is separated from the workpiece 6.

[0038] The specific cutting process is as follows: Step a: During operation, the rolled piece 6 enters the shearing zone of the high-speed continuous flying shear through the inlet guide pipe 7. At this time, the inlet guide pipe 7 is located in the breaking channel 5 of the outlet steel separating guide groove, such as... Figure 3-a1 , Figure 3-a2 As shown.

[0039] Step b: As the rolled piece moves at high speed, the upper shear blade 11 and the lower shear blade 21 first shear the rolled piece, and the head 61 of the rolled piece falls into the shearing channel. Simultaneously, because the upper shear blade 11 and the lower shear blade 21 are located on the steel inlet side when they reach the shear blade closure point (the position where the two shearing center lines coincide), the head of the rolled piece that has not yet been sheared is forcibly pressed below the horizontal shearing center line. Figure 3-b1 , Figure 3-b2 As shown.

[0040] Step c: At this point, as the inlet guide oscillates towards the rolling channel, the workpiece, pressed below the horizontal shear centerline, has passed the vertical partition plate and moved into the break-up channel directly below the rolling channel, awaiting head shearing by the upper cutting head blade 12 and the lower cutting head blade 22. Figure 3-c1 , Figure 3-c2 As shown.

[0041] Step d: When the upper cutting head blade 12 and the lower cutting head blade 22 perform the final head shearing on the rolled piece, the sheared head of the rolled piece has actually entered the breaking channel 5 and will fall into the breaking channel as the shearing ends. However, because the upper cutting head blade 12 and the lower cutting head blade 22 are arranged on the steel tapping side at the shearing closure point (the position where the two shearing center lines coincide), the rolled piece is forcibly lifted by the lower cutting head blade 22 and passes over the horizontal partition plate, and is guided into the rolling channel 4. This achieves the separation of the rolled piece head from the rolled piece. Figure 3-d1 , Figure 3-d2 As shown.

[0042] The cutting head rotation speed of the high-speed continuous flying shear follows the speed of the high-speed rolling workpiece. By using this shearing method, the high-speed continuous flying shear can adapt to higher rolling speeds and avoid the head of the workpiece being carried into the rolling channel, causing steel piling accidents. At the same time, the non-overlapping arrangement of its head cutting blade, tail cutting blade and fragmentation blade also avoids the phenomenon of the workpiece being sheared a second time.

[0043] The high-speed continuous flying shear method of the present invention for cutting off the head, tail, and breaking of rolled workpieces has at least the following advantages: 1) The arrangement of the shear blades and the exit guide groove of the high-speed continuous flying shear prevents the head of the rolled piece from being carried into the rolling channel. At the same time, it can greatly increase the upper limit of the speed of the high-speed continuous flying shear in shearing the rolled piece, and can shear the rolled piece at a speed of up to 150m / s.

[0044] 2) It solves the problem of the rolled workpiece being sheared twice, making the high-speed continuous flying shear operation more stable and reliable.

[0045] As described above, the high-speed continuous flying shear and its shearing method of the present invention have the following beneficial effects: The high-speed continuous flying shear of this invention has the upper breaking shear blade located on the steel inlet side when it reaches the shear blade closure point, and the lower breaking shear blade located on the steel outlet side when it reaches the shear blade closure point. The upper head cutting shear blade and the lower tail cutting shear blade are both located on the steel outlet side when they reach the shear blade closure point, while the lower head cutting shear blade and the upper tail cutting shear blade are both located on the steel inlet side when they reach the shear blade closure point. The outlet steel guide groove is divided into a rolling channel and a breaking channel, which can prevent the head of the rolled piece being carried into the rolling channel and causing steel pile-up accidents. It can significantly increase the upper limit of the continuous shear speed for rolling pieces, and can shear pieces with a maximum speed of 150m / s. At the same time, the non-overlapping arrangement of each shear blade also avoids the phenomenon of the rolled piece being sheared twice, making the operation of the high-speed continuous flying shear more stable and reliable. The high-speed continuous flying shear of this invention, used for head cutting, tail cutting, and fragmentation of rolled pieces, has at least the following advantages: 1) The arrangement of the shear blades and the exit guide groove of the high-speed continuous flying shear prevents the head of the rolled piece from being carried into the rolling channel, and at the same time, it can significantly increase the upper limit of the shearing speed of the high-speed continuous flying shear, which can shear rolled pieces at a maximum speed of 150 m / s. 2) It solves the problem of secondary shearing of rolled pieces, making the operation of the high-speed continuous flying shear more stable and reliable.

[0046] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A high-speed continuous flying shear, comprising an upper blade disc and a lower blade disc, characterized in that, The upper cutter head is provided with multiple upper breaking shear blades evenly spaced along its circumference, and the upper cutting head shear blade and the upper cutting tail shear blade are provided at 180° intervals along its upper edge. The lower cutter head is provided with multiple lower breaking shear blades evenly spaced along its circumference, and the lower cutting head shear blade and the lower cutting tail shear blade are provided at 180° intervals along its upper edge. Each of the upper breaking shear blades is located on the steel inlet side when it reaches the shear blade closure point, and each is arranged on one side. Each of the lower breaking shear blades is located on the steel outlet side when it reaches the shear blade closure point, and each is arranged on one side. The upper cutting head shear blade and the lower cutting tail shear blade are both located on the steel discharge side when they reach the shear blade closure point, and the lower cutting head shear blade and the upper cutting tail shear blade are both located on the steel inlet side when they reach the shear blade closure point. The upper cutting head shear blade, the upper cutting tail shear blade, the lower cutting head shear blade, and the lower cutting tail shear blade are arranged on one side and staggered from each of the upper and lower breaking shear blades. The steel discharge side of the upper cutter head and the lower cutter head is provided with an outlet steel separating guide groove, which is divided into a rolling channel and a breaking channel.

2. The high-speed continuous flying shear as described in claim 1, characterized in that, The blade widths of the upper shredding blades are all set to be the same, and the blade widths of the lower shredding blades are all set to be the same; the blade widths of the upper shredding blade, the upper head shredding blade, the upper tail shredding blade, the lower shredding blade, the lower head shredding blade, and the lower tail shredding blade are set to be different.

3. The high-speed continuous flying shear as described in claim 2, characterized in that, The upper cutter head is provided with four upper breaking shear blades evenly spaced along its circumference. The upper cutting head shear blade is provided on the steel exit side of one of the upper breaking shear blades, and the upper cutting tail shear blade is provided on the steel entry side of another upper breaking shear blade spaced at 180° intervals. The lower cutter head is provided with four lower breaking shear blades evenly spaced along its circumference. The lower cutting head shear blade is provided on the steel entry side of one of the lower breaking shear blades, and the lower cutting tail shear blade is provided on the steel exit side of another lower breaking shear blade spaced at 180° intervals.

4. The high-speed continuous flying shear as described in claim 1, characterized in that, The outlet steel guide channel is equipped with horizontal and vertical partition plates, which divide the vertical and horizontal planes into rolling channels and breaking channels.

5. A shearing method for a high-speed continuous flying shear, characterized in that, include: Guided by the inlet guide tube, the workpiece enters the high-speed continuous flying shear as described in any one of claims 1 to 4. The upper and lower shear blades break and shear the head of the workpiece while pressing the head of the workpiece below the horizontal shear center line. The upper and lower shear blades shear the head of the workpiece, and the head of the workpiece falls into the breaking channel. The workpiece is then introduced into the rolling channel, and the head of the workpiece separates from the workpiece.

6. The shearing method of the high-speed continuous flying shear as described in claim 5, characterized in that, The rolled piece enters the shearing zone of the high-speed continuous flying shear through the inlet guide pipe, at which point the inlet guide pipe is in the breaking channel of the outlet steel separating guide groove.

7. The shearing method of the high-speed continuous flying shear as described in claim 6, characterized in that, The upper and lower shear blades shear the rolled piece on the steel inlet side at the shear blade closure point. The sheared head of the rolled piece falls into the shearing channel, while the unsheared head of the rolled piece is forcibly pressed below the horizontal shearing center line.

8. The shearing method of the high-speed continuous flying shear as described in claim 7, characterized in that, The inlet guide oscillates towards the rolling channel. The head of the workpiece, pressed below the horizontal shearing centerline, passes over the vertical partition plate and runs into the break-up channel below the rolling channel, waiting for the upper and lower cutting blades to shear its head.

9. The shearing method of the high-speed continuous flying shear as described in claim 8, characterized in that, The upper and lower shear blades shear the head of the rolled piece at the steel tapping side of the shear blade closure point. The head of the rolled piece enters the breaking channel. The rolled piece is forcibly lifted by the lower shear blade and passes over the horizontal partition plate. The rolled piece is then guided into the rolling channel, and the head of the rolled piece separates from the rolled piece.

Images