Multi-cut flying shear blanking device and its usage method

Abstract

The present invention relates to a multi-splitting flying shear blanking device and a method for using the same. The device includes a guide groove frame, on which there are a plurality of parallel and spaced rolling piece slots; it also includes a first flap frame and a second flap frame arranged on both sides of the guide groove frame. The first flap frame and the second flap frame can be aligned below the multi-split rolling piece, and the first flap frame and the second flap frame can be turned over and separated away from the multi-split rolling piece; the first flap frame and the second flap frame are connected to a power source structure through a transmission structure, and the power source structure drives the first flap frame and the second flap frame to turn over through the transmission structure. By using a single power source structure to simultaneously drive and control the first flap frame and the second flap frame, the present invention can quickly open the bottom of the steel passing channel to enable the rolling piece to quickly blank, and can also widen the steel passing channel to realize the simultaneous operation of multiple rolling pieces without mutual interference, making the device have a high safety factor and reliable operation.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical mechanical equipment, and in particular to a multi-split flying shear blanking device and a using method thereof. Background Art

[0002] With the development of the multi-split process in metallurgical rolling (a rolling process in which a rolled piece is longitudinally cut into two or more rolled pieces by using special roll pass profiles and guide devices on a section mill, and then two or more finished rolled products are rolled), as Figure 5 shown, a pre-cooling device 84 and a multi-split flying shear 83 are introduced into the production line. The purpose is that after the rolled piece undergoes multi-split rolling, it needs to enter the pre-cooling device to improve the product performance. However, due to the system error of the rolling mill on the rolling line, the multi-split rolled pieces will generate a "line difference" between each other during the process of passing through the pre-cooling device, that is, a displacement difference between the rolled pieces, which makes the rolled pieces prone to steel piling accidents when entering the finishing mill group 81; moreover, the heads of the multi-split rolled pieces (two or more rolled pieces running and rolling simultaneously) passing through the pre-cooling device will generate black heads due to temperature drop, which also makes the rolled pieces prone to steel piling accidents when entering the finishing mill group. Therefore, the multi-split flying shear is arranged at the entrance of the finishing mill group to cut the heads of the multi-split rolled pieces and perform accident breaking. In this way, both the black heads generated by the rolled pieces passing through the pre-cooling device are cut off, and the "line difference" generated by the rolled pieces during operation is prevented from affecting the biting of the finishing mill group, greatly improving the stability of the rolling line. And the blanking device 82 for the multi-split rolled pieces cut off by the flying shear is the key to the operation of the flying shear and even the operation of the rolling line.

[0003] In the multi-split rolling process, the speed of the multi-split rolled pieces when entering the finishing mill group is generally relatively high, up to 10 - 14 m / s. In addition, due to the layout of the pass profiles of the finishing mill group and the requirements of the number of split pieces (usually four or five rolled pieces are rolled simultaneously), the channel width of the post-shearing blanking device becomes wider, which makes it a technical problem whether the blanking of the multi-root rolled pieces after being sheared during high-speed operation is reliable.

[0004] Normally, when the running speed of the multi-split rolled pieces is not very fast (speed < 4 m / s), the rolled pieces after being sheared by the flying shear can fall by their own weight to achieve blanking of the rolled pieces. The sheared rolled pieces 87 or the rolled pieces sheared during accident breaking fall freely to achieve blanking of the rolled pieces. This blanking method has the following disadvantages:

[0005] (1) As Figure 6As shown in the figure, it is difficult to control the distance between the flying shear and the edge of the bottom plate 86 of the outlet guide chute (provided in the outlet blanking device 85). If the distance is too small, the rolled piece cannot fall freely through the guide chute, and the rolled piece may stay on the bottom plate of the guide chute. When the subsequent rolled piece runs into the rolled piece staying on the bottom plate of the guide chute, it may cause a steel piling accident. If the distance is too large, although the sheared rolled piece can fall freely through the guide chute, it may cause the subsequent rolled piece to be unable to pass through this position, resulting in a steel piling accident.

[0006] (2) Due to the wire difference problem of the multi-split rolled piece, the lengths of multiple rolled pieces are different after being sheared, which will increase the probability of the sheared rolled piece staying on the bottom plate of the guide chute.

[0007] In addition, when the steel passing channel of the blanking device is not very wide (width < 320 mm), the bottom of the steel passing channel can be opened by the action of the single-side flap bracket to realize the blanking of the rolled piece. The sheared rolled piece can make the bottom of the steel passing channel open through the action of the single-side flap bracket to realize the blanking of the rolled piece. This assembly method has the following disadvantages:

[0008] (1) It is only applicable to the structure where the steel passing channel is not very wide. If the channel becomes wider, the stroke of the cylinder power source will become longer, resulting in slow movement of the mechanism.

[0009] (2) The single-channel structure may cause the multi-split rolled pieces to run chaotically after being sheared, increasing the probability of steel jamming.

[0010] Therefore, based on years of experience and practice in the relevant industry, the inventor proposes a multi-split flying shear blanking device and its use method to overcome the defects of the prior art. Summary of the Invention

[0011] The purpose of the present invention is to provide a multi-split flying shear blanking device and its use method. The present invention can simultaneously drive and control the first flap bracket and the second flap bracket through a single power source structure, quickly open the bottom of the steel passing channel to enable the rolled piece to quickly fall, and can also widen the steel passing channel to enable multiple rolled pieces to run simultaneously without affecting each other, making the device have a high safety factor and reliable operation.

[0012] The purpose of the present invention is achieved as follows. A multi-split flying shear blanking device includes a guide chute frame arranged along the running direction of the multi-split rolled piece, and a plurality of parallel and spaced rolled piece slots are provided on the guide chute frame; it also includes a first flap bracket and a second flap bracket arranged on both sides of the guide chute frame. The first flap bracket and the second flap bracket can be aligned below the multi-split rolled piece, and the first flap bracket and the second flap bracket can be flipped and separated away from the multi-split rolled piece; the first flap bracket and the second flap bracket are connected to a power source structure through a transmission structure, and the power source structure drives the first flap bracket and the second flap bracket to flip through the transmission structure.

[0013] In a preferred embodiment of the present invention, the transmission structure includes a cross beam, a first crank and a second crank. The cross beam is located above the guide groove frame and is connected to the power source structure. The first crank is hinged to a first hinge seat. A first end of the first crank is fixedly connected to the first flap frame. A second end of the first crank is hinged to a first slider. The first slider can slide along the cross beam. The first crank, the first hinge seat and the first slider form a first crank-slider mechanism. The second crank is hinged to a second hinge seat. A first end of the second crank is fixedly connected to the second flap frame. A second end of the second crank is hinged to a second slider. The second slider can slide along the cross beam. The second crank, the second hinge seat and the second slider form a second crank-slider mechanism.

[0014] In a preferred embodiment of the present invention, the first hinge seat and the second hinge seat are respectively arranged on two sides of the guide groove frame. A first guide groove and a second guide groove are respectively arranged on two sides of the guide groove frame. The first guide groove is for the first flap frame to pass through during flipping. The second guide groove is for the second flap frame to pass through during flipping.

[0015] In a preferred embodiment of the present invention, the first flap frame and the second flap frame are symmetrically arranged about the central axis of the guide groove frame. The first crank-slider mechanism and the second crank-slider mechanism are symmetrically arranged on two sides of the guide groove frame.

[0016] In a preferred embodiment of the present invention, a first chute and a second chute are provided on the cross beam. The first slider is slidably arranged in the first chute. The second slider is slidably arranged in the second chute.

[0017] In a preferred embodiment of the present invention, the first slider includes a first bearing capable of sliding along the first chute. A first rotating shaft is arranged at the second end of the first crank. The first rotating shaft rotatably passes through the first bearing.

[0018] In a preferred embodiment of the present invention, the second slider includes a second bearing capable of sliding along the second chute. A second rotating shaft is arranged at the second end of the second crank. The second rotating shaft rotatably passes through the second bearing.

[0019] In a preferred embodiment of the present invention, the first flap frame includes a first cross plate and a first vertical plate. The second flap frame includes a second cross plate and a second vertical plate.

[0020] In a preferred embodiment of the present invention, the power source structure includes a driving cylinder disposed above the guide groove frame. The driving cylinder includes a vertically arranged cylinder barrel and a cylinder rod. The cylinder rod is hermetically and slidably inserted into the cylinder barrel from the bottom, and the bottom end of the cylinder rod is fixedly connected to the cross beam.

[0021] The object of the present invention can also be achieved in the following way. A method for using a multi-splitting flying shear blanking device includes:

[0022] During normal operation, the cross beam is in the upper position. The first flap frame and the second flap frame are aligned below the multi-splitting rolled piece, and together with the guide groove frame, they form a closed channel for the multi-splitting rolled piece. The multi-splitting rolled piece runs in the closed channel for the multi-splitting rolled piece.

[0023] When blanking is required, the power source structure pushes the cross beam downward. The cross beam drives the first flap frame and the second flap frame to flip and separate simultaneously through the first crank-slider mechanism and the second crank-slider mechanism. The closed channel for the multi-splitting rolled piece is opened, and the multi-splitting rolled piece is blanked.

[0024] After the blanking is completed, the power source structure pulls the cross beam upward. The cross beam drives the first flap frame and the second flap frame to flip and align simultaneously through the first crank-slider mechanism and the second crank-slider mechanism, and a closed channel for the multi-splitting rolled piece is formed again. The multi-splitting rolled piece continues to run through the closed channel for the multi-splitting rolled piece.

[0025] As described above, the multi-splitting flying shear blanking device and its using method of the present invention have the following beneficial effects:

[0026] In the multi-splitting flying shear blanking device of the present invention, multiple rolled piece slots are provided in the guide groove frame, which avoids the phenomenon that the multi-splitting rolled piece may run chaotically after being sheared in a single-channel structure. The introduction of the double-sided flip plates can increase the width of the guide groove frame, enabling an increase in the number of multi-splitting rolled pieces. The steel-passing channel for the multi-splitting rolled pieces becomes wider, allowing multiple rolled pieces to run simultaneously without affecting each other, making the device have a high safety factor and reliable operation. After the multi-splitting rolled pieces have their respective channels, their movement laws after being sheared are easy to grasp, which is beneficial for guiding the blanking trajectory. The present invention uses a single power source structure to simultaneously drive and control the first flap frame and the second flap frame, which can quickly open the bottom of the steel-passing channel, enabling the multi-splitting rolled piece to quickly blank while running, solving the problem of slow movement of the overall mechanism after the steel-passing channel becomes wider, making the device operate more quickly and the blanking more smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0028] Figure 1 : Schematic structural diagram of the multi-splitting flying shear blanking device of the present invention when the cross beam is in the upper position.

[0029] Figure 2 : Schematic structural diagram of the multi-splitting flying shear blanking device of the present invention when the cross beam is in the lower position.

[0030] Figure 3 : Schematic working principle diagram of the multi-splitting flying shear blanking device of the present invention when the cross beam is in the upper position.

[0031] Figure 4 : Schematic working principle diagram of the multi-splitting flying shear blanking device of the present invention when the cross beam is in the lower position.

[0032] Figure 5 : Schematic diagram of the pre-cooling device and the multi-splitting flying shear introduced into the production line in the prior art.

[0033] Figure 6 : Schematic diagram of blanking when the running speed of the multi-splitting rolled piece is not very fast in the prior art.

[0034] In the figure:

[0035] 100. Multi-splitting flying shear blanking device;

[0036] 1. Guide groove frame; 11. Rolled piece notch;

[0037] 21. First flap frame; 22. Second flap frame;

[0038] 3. Power source structure;

[0039] 31. Cylinder barrel; 32. Cylinder rod;

[0040] 41. First crank-slider mechanism;

[0041] 411. First crank; 412. First hinge seat; 413. First slider;

[0042] 42. Second crank-slider mechanism;

[0043] 421. Second crank; 422. Second hinge seat; 423. Second slider;

[0044] 43. Cross beam;

[0045] 431. First chute; 432. Second chute;

[0046] 81. Finishing mill unit; 82. Blanking device; 83. Multi-splitting flying shear; 84. Pre-cooling device; 85. Outlet blanking device; 86. Guide groove bottom plate; 87. Cut-off rolled piece;

[0047] 91. Multi-splitting rolled piece; 92. Multi-splitting rolled piece closed channel. Detailed implementation manners

[0048] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0049] The specific embodiments of the present invention described herein are only for the purpose of explaining the objectives of the present invention and should not be construed in any way as a limitation of the present invention. Under the teachings of the present invention, those skilled in the art can conceive of any possible variations based on the present invention, and all of these should be considered to fall within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0051] As Figure 1 、 Figure 2 shown, the present invention provides a multi-splitting flying shear blanking device 100, which includes a guide groove frame 1 arranged along the running direction of the multi-splitting rolled piece 91. A plurality of parallel and spaced rolled piece slots 11 are provided on the guide groove frame 1. The multi-splitting flying shear blanking device 100 further includes a first flap frame 21 and a second flap frame 22 arranged on both sides of the guide groove frame. The first flap frame 21 and the second flap frame 22 can be aligned below the multi-splitting rolled piece 91, and the first flap frame 21 and the second flap frame 22 can be flipped and separated away from the multi-splitting rolled piece. The first flap frame 21 and the second flap frame 22 are connected to a power source structure 3 through a transmission structure, and the power source structure 3 drives the first flap frame 21 and the second flap frame 22 to flip through the transmission structure.

[0052] In the multi-split flying shear blanking device of the present invention, multiple workpiece grooves are provided in the guide groove frame, avoiding the phenomenon that the multi-split workpieces may run chaotically after being sheared in a single-channel structure. The introduction of the double-sided turning plates can increase the width of the guide groove frame, realizing an increase in the number of multi-split workpieces. The steel-passing channels for the multi-split workpieces become wider, enabling multiple workpieces to run simultaneously without affecting each other, making the device have a high safety factor and reliable operation. After the multi-split workpieces have their respective channels, their movement laws after being sheared are easy to grasp, which is beneficial for guiding the blanking trajectory. The present invention uses a single power source structure to simultaneously drive and control the first turning plate frame and the second turning plate frame, which can quickly open the bottom of the steel-passing channel, allowing the multi-split workpieces to quickly blank while running, solving the problem of slow movement of the overall mechanism after the steel-passing channel becomes wider, making the device operate more quickly and the blanking more smooth.

[0053] Further, as Figure 1 , Figure 2 shown, the transmission structure includes a cross beam 43, a first crank 411, and a second crank 421. The cross beam 43 is located above the guide groove frame 1 and is connected to the power source structure 3. The first crank 411 is hinged to the first hinge seat 412. The first end of the first crank 411 is fixedly connected to the first turning plate frame 21. The second end of the first crank 411 is hinged to the first slider 413. The first slider 413 can slide along the cross beam 43. The first crank 411, the first hinge seat 412, and the first slider 413 form a first crank-slider mechanism 41.

[0054] The second crank 421 is hinged to the second hinge seat 422. The first end of the second crank 421 is fixedly connected to the second turning plate frame 22. The second end of the second crank 421 is hinged to the second slider 423. The second slider 423 can slide along the cross beam 43. The second crank 421, the second hinge seat 422, and the second slider 423 form a second crank-slider mechanism 42.

[0055] The present invention uses a single power source structure to control the double crank-sliders. Through the double crank-slider mechanism, the linear motion of the power source structure is converted into bilateral circular motion, enabling the first turning plate frame and the second turning plate frame to generate rotational motion through the restraint of the cross beam, so that the first turning plate frame and the second turning plate frame can be quickly opened and closed, ultimately realizing rapid blanking of the workpieces. Using the present invention for blanking avoids the chaos of multi-split workpiece blanking, thereby improving the blanking rate, making the blanking smoother, and avoiding the phenomenon of workpiece accumulation due to unsmooth blanking.

[0056] Further, as Figure 1 , Figure 2 shown, the first hinge seat 412 and the second hinge seat 422 are respectively arranged on both sides of the guide groove frame 1. The first guide groove and the second guide groove are respectively arranged on both sides of the guide groove frame 1. The first guide groove is for the first turning plate frame to flip through, and the second guide groove is for the second turning plate frame to flip through.

[0057] Furthermore, the first flap frame 21 and the second flap frame 22 are symmetrically arranged about the central axis of the guide groove frame 1; the first crank-slider mechanism 41 and the second crank-slider mechanism 42 are symmetrically arranged on both sides of the guide groove frame 1.

[0058] Furthermore, as Figure 1 , Figure 2 shown, the cross beam 43 is provided with a first chute 431 and a second chute 432. The first slider 413 is slidably arranged in the first chute 431, and the second slider 423 is slidably arranged in the second chute 432.

[0059] Furthermore, as Figure 1 , Figure 2 shown, the first slider 413 includes a first bearing capable of sliding along the first chute. The second end of the first crank 411 is provided with a first rotating shaft, and the first rotating shaft is rotatably arranged in the first bearing.

[0060] Furthermore, as Figure 1 , Figure 2 shown, the second slider 423 includes a second bearing capable of sliding along the second chute. The second end of the second crank 421 is provided with a second rotating shaft, and the second rotating shaft is rotatably arranged in the second bearing.

[0061] Furthermore, the first flap frame 21 includes a first horizontal plate and a first vertical plate, and the second flap frame 22 includes a second horizontal plate and a second vertical plate. The support structures of the first flap frame 21 and the second flap frame 22 have high stability and avoid deformation and damage during use.

[0062] Furthermore, as Figure 1 , Figure 2 shown, the power source structure 3 includes a driving cylinder arranged above the guide groove frame. The driving cylinder includes a vertically arranged cylinder barrel 31 and a cylinder rod 32. The cylinder rod 32 is slidably arranged in the cylinder barrel 31 from the bottom in a sealed manner, and the bottom end of the cylinder rod 32 is fixedly connected to the cross beam 43. The power source structure 3 can be a pneumatic cylinder or a hydraulic cylinder.

[0063] The usage method of the multi-splitting flying shear blanking device 100 of the present invention includes:

[0064] During normal operation, the cross beam 43 is in the upper position (as Figure 1 , Figure 3 shown). The first flap frame 21 and the second flap frame 22 are aligned below the multi-splitting rolled piece 91 and form a multi-splitting rolled piece closed channel 92 with the guide groove frame 1. The multi-splitting rolled piece 91 runs in the multi-splitting rolled piece closed channel;

[0065] When blanking is required, when the system issues a multi-splitting shear cutting instruction, the power source structure 3 acts, and the power source structure 3 pushes the cross beam 43 to descend (as Figure 2 , Figure 4As shown in the figure, the crossbeam 43 drives the first flap frame 21 and the second flap frame 22 to flip and separate simultaneously through the first crank-slider mechanism 41 and the second crank-slider mechanism 42, the closed channel for multi-split rolled pieces is opened, and the multi-split rolled pieces 91 are discharged.

[0066] Specifically, while the crossbeam 43 descends, the first slider 413 and the second slider 423 slide towards each other along the first chute 431 and the second chute 432 respectively. As the crossbeam 43 descends, the first slider 413 and the second slider 423 approach the center line of the crossbeam 43. The first crank 411 drives the first flap frame 21 to rotate around the first hinge seat 412, and the second crank 421 drives the second flap frame 22 to rotate around the second hinge seat 422. The first flap frame 21 and the second flap frame 22 flip and separate simultaneously.

[0067] After the blanking is completed, the power source structure 3 pulls the crossbeam 43 to rise. The crossbeam 43 drives the first flap frame 21 and the second flap frame 22 to flip and close simultaneously through the first crank-slider mechanism 41 and the second crank-slider mechanism 42, and the closed channel for multi-split rolled pieces is formed again. The multi-split rolled pieces 91 continue to run through the closed channel for multi-split rolled pieces.

[0068] Specifically, after the blanking is completed, the system issues an instruction to close the closed channel for multi-split rolled pieces. At this time, the power source structure 3 acts to lift the crossbeam 43 to the upper position. While the crossbeam 43 rises, the first slider 413 and the second slider 423 slide away from each other along the first chute 431 and the second chute 432 respectively. As the crossbeam 43 rises, the first slider 413 and the second slider 423 move away from the center line of the crossbeam 43. The first crank 411 drives the first flap frame 21 to rotate around the first hinge seat 412, and the second crank 421 drives the second flap frame 22 to rotate around the second hinge seat 422. The first flap frame 21 and the second flap frame 22 flip and close simultaneously, and the closed channel for multi-split rolled pieces is formed again.

[0069] As described above, the multi-split flying shear blanking device and its use method of the present invention have the following beneficial effects:

[0070] In the multi-split flying shear blanking device of the present invention, multiple rolling piece notches are provided in the guide groove frame, avoiding the phenomenon that the multi-split rolling pieces may run chaotically after being sheared in a single-channel structure. The introduction of the double-sided turning plates can increase the width of the guide groove frame, realizing an increase in the number of multi-split rolling pieces. The steel-passing channels for the multi-split rolling pieces become wider, enabling multiple rolling pieces to run simultaneously without affecting each other, making the device have a high safety factor and reliable operation. After the multi-split rolling pieces have their respective channels, their movement laws after being sheared are easy to grasp, which is beneficial for guiding the blanking trajectory. The present invention can quickly open the bottom of the steel-passing channel by driving and controlling the first turning plate frame and the second turning plate frame with a single power source structure, allowing the multi-split rolling pieces to quickly blank while running, solving the phenomenon that the overall mechanism moves slowly after the steel-passing channel becomes wider, making the device operate more quickly and the blanking more smooth.

[0071] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A multi-segment flying shear blanking device, characterized in that It includes a guide groove frame arranged along the running direction of the multi-split rolled piece, and a plurality of parallel and spaced rolled piece notches are provided on the guide groove frame; it also includes a first flap frame and a second flap frame arranged on both sides of the guide groove frame. The first flap frame and the second flap frame can be aligned below the multi-split rolled piece, and the first flap frame and the second flap frame can be flipped and separated away from the multi-split rolled piece; the first flap frame and the second flap frame are connected to a power source structure through a transmission structure, and the power source structure drives the first flap frame and the second flap frame to flip through the transmission structure. The transmission structure includes a cross beam, a first crank and a second crank. The cross beam is located above the guide groove frame and is connected to the power source structure; the first crank is hinged on a first hinge seat. The first end of the first crank is fixedly connected to the first flap frame, and the second end of the first crank is hinged to a first slider. The first slider can slide along the cross beam. The first crank, the first hinge seat and the first slider form a first crank-slider mechanism; the second crank is hinged on a second hinge seat. The first end of the second crank is fixedly connected to the second flap frame, and the second end of the second crank is hinged to a second slider. The second slider can slide along the cross beam. The second crank, the second hinge seat and the second slider form a second crank-slider mechanism. The first hinge seat and the second hinge seat are respectively arranged on both sides of the guide groove frame. A first guide groove and a second guide groove are respectively arranged on both sides of the guide groove frame. The first guide groove is used for the first flap frame to flip through, and the second guide groove is used for the second flap frame to flip through.

2. The multi-cut flying shear blanking device according to claim 1, characterized in that, The first flap frame and the second flap frame are symmetrically arranged about the central axis of the guide groove frame; the first crank-slider mechanism and the second crank-slider mechanism are symmetrically arranged on both sides of the guide groove frame.

3. The multi-cutting flying shear blanking device according to claim 1, wherein, The cross beam is provided with a first chute and a second chute. The first slider is slidably arranged in the first chute, and the second slider is slidably arranged in the second chute.

4. The multi-segment flying shear blanking device according to claim 3, wherein, The first slider includes a first bearing that can slide along the first chute. A first rotating shaft is arranged at the second end of the first crank, and the first rotating shaft rotatably penetrates through the first bearing.

5. The multi-segment flying shear blanking device according to claim 3, characterized in that, The second slider includes a second bearing that can slide along the second chute. A second rotating shaft is arranged at the second end of the second crank, and the second rotating shaft rotatably penetrates through the second bearing.

6. The multi-segment flying shear blanking device according to claim 1, characterized in that, The first flap frame includes a first cross plate and a first vertical plate, and the second flap frame includes a second cross plate and a second vertical plate.

7. The multi-segment flying shear blanking device according to claim 1, wherein, The power source structure includes a driving cylinder arranged above the guide groove frame. The driving cylinder includes a vertically arranged cylinder barrel and a cylinder rod. The cylinder rod is hermetically and slidably penetrated through the cylinder barrel from the bottom, and the bottom end of the cylinder rod is fixedly connected to the cross beam.

8. A method for using the multi-cut flying shear blanking device according to any one of claims 1 to 7, characterized in that, It includes: During normal operation, the cross beam is in the upper position. The first flap frame and the second flap frame are aligned below the multi-split rolled piece and form a closed channel for the multi-split rolled piece with the guide groove frame. The multi-split rolled piece runs in the closed channel for the multi-split rolled piece. When blanking is required, the power source structure pushes the crossbeam downward. The crossbeam drives the first and second flap frames to flip and separate simultaneously through the first and second crank-slider mechanisms, opening the closed channel for the multi-split rolled piece, and the multi-split rolled piece is blanked. After the blanking is completed, the power source structure pulls the crossbeam upward. The crossbeam drives the first and second flap frames to flip and align simultaneously through the first and second crank-slider mechanisms, forming the closed channel for the multi-split rolled piece again, and the multi-split rolled piece continues to run through the closed channel for the multi-split rolled piece.

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