Continuous flying shear blade and shearing machine

Abstract

The utility model provides a continuous flying shear blade and a shearing machine, the continuous flying shear blade comprises an upper rotary drum and a lower rotary drum which are oppositely arranged up and down, at least two upper shear blades are arranged on the outer side of the circumferential direction of the upper rotary drum, and at least two lower shear blades which can be matched with the upper shear blades in a shearing manner are arranged on the outer side of the circumferential direction of the lower rotary drum; a continuously-running rolled piece is arranged between the upper rotary drum and the lower rotary drum, and in the state that the upper shear blade and the lower shear blade are in butt joint to continuously shear the rolled piece, the upper shear blade is located on the steel inlet side, and the lower shear blade is located on the steel outlet side. The running trend of a rolled piece after shearing is changed through the arrangement direction of the shear blades, steel flying is avoided, and then continuous shearing of the same rolled piece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling equipment, in particular to a continuous flying shear blade and a shearing machine. Background Art

[0002] The shearing machine for transverse shearing of rolled pieces is called flying shear. It is a processing equipment that can quickly cut iron plates, steel pipes, and paper rolls. It is a fixed-length shearing machine for the metallurgical steel rolling industry, high-speed wire and rebar, and a modern product for rolling bar shearing. It has the characteristics of low power consumption and low investment cost. High-speed flying shears are mainly used in ultra-thin slab continuous casting and rolling production lines. The traditional high-speed flying shear blade and drum device includes an upper drum and a lower drum, and the upper and lower shear blades are installed at corresponding positions. The two drums rotate in the same direction and shear the strip when they rotate to the corresponding positions where the upper and lower shear blades are installed.

[0003] Existing shear blade structures, especially shear blades used for continuous multiple shearing of the same rolled piece, have the following disadvantages:

[0004] 1) The upper shear blade is on the steel-out side of the equipment, and the lower shear blade is on the steel-in side of the equipment. The arrangement of the shear blades makes the rolled piece tend to be lifted upward by the lower shear blade after being sheared, which easily causes the rolled piece to fly out of the guide groove, resulting in flying steel, and thus making it impossible to perform continuous shearing.

[0005] 2) The cutting edge of the shear blade is in direct contact with the workpiece, which causes increased wear on the cutting edge and reduces the service life of the shear blade.

[0006] 3) Line contact is formed between the shear blade and the workpiece, which can easily cause the shear blade to break and cause an accident. Utility Model Content

[0007] The utility model aims to provide a continuous flying shear blade and shearing machine, which can change the running trend of the rolled piece after shearing by arranging the direction of the shear blade, avoid the generation of flying steel, and further realize the continuous shearing of the same rolled piece.

[0008] On the one hand, the utility model provides a continuous flying shear blade, which comprises an upper drum and a lower drum arranged opposite to each other, at least two upper shear blades are arranged on the circumferential outer side of the upper drum, and at least two lower shear blades capable of shearing with the upper shear blades are arranged on the circumferential outer side of the lower drum;

[0009] A continuously running rolled piece is arranged between the upper drum and the lower drum. When the upper shearing blade is butted against the lower shearing blade to continuously shear the rolled piece, the upper shearing blade is located at the steel input side, and the lower shearing blade is located at the steel output side.

[0010] The continuous flying shear blades described in the utility model are used for continuous shearing of the same rolled piece. The positional relationship of the shear blades during shearing is designed, with the upper shear blade being arranged on the steel entry side and the lower shear blade being arranged on the steel exit side. After the rolled piece is sheared, the upper shear blade generates a downward force on the head of the subsequent rolled piece, and the subsequent rolled piece tends to be pressed downward by the upper shear blade, thereby avoiding the generation of flying steel and ensuring that the rolled piece can be sheared continuously.

[0011] In a preferred embodiment of the present invention, the end of the upper shearing blade has a first flat cutting edge, and when the upper shearing blade starts to shear the workpiece, the first flat cutting edge forms a surface contact with the upper surface of the workpiece.

[0012] In this embodiment, when the upper shear blade contacts the workpiece, the contact between the cutting edge at its end and the workpiece is optimized from line contact to surface contact, and the stress per unit area of ​​the first flat cutting edge is reduced, thereby reducing the wear on the cutting edge of the shear blade and extending the service life of the upper shear blade.

[0013] In a preferred embodiment of the present invention, the end of the lower shearing blade has a second flat cutting edge, and when the lower shearing blade starts to shear the workpiece, the second flat cutting edge forms surface contact with the lower surface of the workpiece.

[0014] In this embodiment, when the lower shear blade contacts the workpiece, the contact between the cutting edge at its end and the workpiece is optimized from line contact to surface contact, and the stress per unit area of ​​the second flat cutting edge is reduced, thereby reducing the wear on the cutting edge of the shear blade and extending the service life of the lower shear blade.

[0015] In a preferred embodiment of the present invention, four upper shearing blades are provided at intervals on the circumferential outer side of the upper rotary drum, and four lower shearing blades are provided at intervals on the circumferential outer side of the lower rotary drum.

[0016] In this embodiment, four pairs of matched upper shear blades and lower shear blades are provided on the rotating drum; in other embodiments, the number of upper shear blades and lower shear blades can be adaptively adjusted.

[0017] In a preferred embodiment of the present invention, the rotation direction of the upper drum is opposite to the rotation direction of the lower drum.

[0018] In a preferred embodiment of the present invention, the movement direction of the bottom end of the upper drum and the movement direction of the top end of the lower drum are both the same as the running direction of the rolled piece.

[0019] In a preferred embodiment of the present invention, a plurality of grooves are provided on the upper rotary drum along its circumferential direction, and the plurality of upper shear blades are respectively fixed in the plurality of grooves.

[0020] In this embodiment, the provision of the groove can prevent the upper shearing blade from extending radially too long, thereby causing a larger gap to be formed between the upper drum and the lower drum.

[0021] In a preferred embodiment of the present invention, the axis of the upper drum and the axis of the lower drum are located in the same vertical plane.

[0022] In this embodiment, the upper drum and the lower drum are vertically opposed to each other to facilitate adjustment of their initial positions, thereby ensuring that the upper shear blade and the lower shear blade can butt against each other during the rotation process.

[0023] In a preferred embodiment of the present invention, the rolled piece runs in a horizontal direction toward a gap formed between the upper drum and the lower drum.

[0024] On the other hand, the utility model also provides a shearing machine, which includes a casing and two rotating shafts arranged in the casing, and the output sections of the two rotating shafts extend out of the side walls of the casing and are respectively connected to the upper drum and the lower drum as described above.

[0025] The shearing machine described in the utility model is used for continuous shearing of the same rolled piece, and an upper drum and a lower drum are connected to the rotating shaft, wherein the upper shearing blade on the upper drum is arranged on the steel entry side, and the lower shearing blade on the lower drum is arranged on the steel exit side. After the rolled piece is sheared, the upper shearing blade generates a downward force on the head of the subsequent rolled piece, and the subsequent rolled piece tends to be pressed downward by the upper shearing blade, thereby avoiding the generation of flying steel and ensuring that the rolled piece can be continuously sheared when passing through the shearing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0028] Figure 1 This is a schematic diagram of the structure of the continuous flying shear blade of the utility model;

[0029] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0030] Description of reference numerals:

[0031] 10. upper rotating drum; 11. upper shearing blade; 111. first flat cutting edge; 12. groove;

[0032] 20. lower rotary drum; 21. lower shearing blade; 211. second flat cutting edge;

[0033] 30. Rolled products;

[0034] M, steel inlet side; N, steel outlet side;

[0035] B. Rotation direction; C. Rotation direction; D. Running direction. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0037] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] Implementation method 1:

[0040] like Figure 1 and Figure 2As shown, the utility model provides a continuous flying shear blade, which includes an upper drum 10 and a lower drum 20 which are arranged opposite to each other in the upper and lower directions. At least two upper shear blades 11 are arranged on the circumferential outer side of the upper drum 10, and at least two lower shear blades 21 which can cooperate with the upper shear blades 11 in shearing are arranged on the circumferential outer side of the lower drum 20. A continuously running rolled piece 30 is arranged between the upper drum 10 and the lower drum 20. When the upper shear blade 11 is butt-jointed with the lower shear blade 21 to perform continuous shearing on the rolled piece 30, the upper shear blade 11 is located at the steel entry side M, and the lower shear blade 21 is located at the steel exit side N.

[0041] The continuous flying shear blades described in the utility model are used to continuously shear the same rolled piece 30. By designing the positional relationship of the shear blades during shearing, the upper shear blade 11 is set on the steel entry side M, and the lower shear blade 21 is set on the steel exit side N. After the rolled piece 30 is sheared, the upper shear blade 11 generates a downward force on the head of the subsequent rolled piece 30, and the subsequent rolled piece 30 tends to be pressed downward by the upper shear blade 11, thereby avoiding the generation of flying steel and ensuring that the rolled piece 30 can be sheared continuously.

[0042] Specifically, Figure 1 As shown, it is a schematic diagram of the side view of the upper drum 10 and the lower drum 20. The axis of the upper drum 10 is parallel to the axis of the lower drum 20 and the two are arranged opposite to each other up and down. A plurality of upper shearing blades 11 are arranged on the circumferential side of the upper drum 10, and the plurality of upper shearing blades 11 are evenly arranged circumferentially; a plurality of lower shearing blades 21 are arranged on the circumferential side of the lower drum 20, and the plurality of lower shearing blades 21 are evenly arranged circumferentially.

[0043] A gap is formed between the upper drum 10 and the lower drum 20, and the rolled piece 30 is arranged in the gap and can continuously run toward the gap. The rolled piece 30 in this embodiment is a bar steel. During the rotation of the upper drum 10 and the lower drum 20, the multiple upper shear blades 11 and the multiple lower shear blades 21 can be aligned and matched to shear the running rolled piece 30; the upper drum 10 and the lower drum 20 have the same rotation speed, and can perform multiple shearing operations on the rolled piece 30 for each rotation.

[0044] In the state where the upper shearing blade 11 and the lower shearing blade 21 are butted against each other to shear the workpiece 30 (eg Figure 2 The state shown in the figure) is shown in the figure. At this time, the upper shear blade 11 is located at the steel entry side M, and the lower shear blade 21 is located at the steel exit side N; the steel entry side M and the steel exit side N are relative to the running direction D of the workpiece 30. There are unsheared workpiece 30 and sheared workpiece 30 on both sides of the drum respectively. The side with the unsheared workpiece 30 is the steel entry side M, and the side with the sheared workpiece 30 is the steel exit side N.

[0045] Further, the vertical plane at the position where the upper shear blade 11 and the lower shear blade 21 meet is used as the boundary, the front side of the vertical plane is the steel entry side M, and the rear side of the vertical plane is the steel exit side N; the definition of the steel entry side M and the steel exit side N is actually to illustrate the relative position relationship between the upper shear blade 11 and the lower shear blade 21; in the actual production operation process, the process of the upper shear blade 11 and the lower shear blade 21 meeting to shear the rolled piece 30 is a dynamic process, Figure 1 or Figure 2 Only the state in which the upper shear blade 11 and the lower shear blade 21 are about to shear the workpiece 30 is shown, and the above-mentioned steel entry side M and steel exit side N also refer to this state; in fact, in the subsequent shearing process, the upper shear blade 11 is always located in front of the lower shear blade 21, that is, in the entire shearing process (a pair of upper shear blades 11 and lower shear blades 21 shear the workpiece 30 once), the upper shear blade 11 is always located at the steel entry side M, and the lower shear blade 21 is always located at the steel exit side N, so that after the workpiece 30 is sheared, the unsheared workpiece 30 located at the steel entry side M can be subjected to the downward pressure applied to its head by the upper shear blade 11, and the subsequent workpiece 30 tends to be pressed downward by the upper shear blade 11, avoiding its upward warping and producing flying steel, thereby ensuring that the subsequent workpiece 30 can continuously and stably run toward the gap between the upper drum 10 and the lower drum 20 to complete continuous shearing.

[0046] According to one embodiment of the present utility model, Figure 2 As shown, the end of the upper shear blade 11 has a first flat cutting edge 111 . When the upper shear blade 11 starts to shear the workpiece 30 , the first flat cutting edge 111 forms surface contact with the upper surface of the workpiece 30 .

[0047] The cutting edge of the existing shear blade is usually a pointed structure, which forms a line contact with the workpiece 30 to increase the shear force on the workpiece 30, which will cause the cutting edge to collapse. The cutting edge of the upper shear blade 11 of the utility model is pre-ground flat, so that the end thereof forms a first flat cutting edge 111; when the upper shear blade 11 contacts the workpiece 30, since the contact between the cutting edge at the end thereof and the workpiece 30 is optimized from the original line contact to the surface contact, the stress per unit area of ​​the first flat cutting edge 111 is reduced, thereby reducing the wear of the cutting edge of the shear blade and extending the service life of the upper shear blade 11.

[0048] Preferably, the end of the lower shearing blade 21 has a second flat cutting edge 211 , and when the lower shearing blade 21 begins to shear the workpiece 30 , the second flat cutting edge 211 forms surface contact with the lower surface of the workpiece 30 .

[0049] In this embodiment, the end of the lower shear blade 21 is also ground to form a second flat cutting edge 211 at its end. When the lower shear blade 21 contacts the workpiece 30, the contact between the cutting edge at its end and the workpiece 30 is optimized from line contact to surface contact. The stress per unit area of ​​the second flat cutting edge 211 is reduced, thereby reducing the wear on the cutting edge and extending the service life of the lower shear blade 21.

[0050] According to one embodiment of the present utility model, Figure 1 As shown, four upper shearing blades 11 are provided at intervals on the outer circumferential side of the upper drum 10 , and four lower shearing blades 21 are provided at intervals on the outer circumferential side of the lower drum 20 .

[0051] The shear blade structure described in the utility model needs to continuously shear the rolled piece 30, that is, the upper drum 10 and the lower drum 20 rotate continuously. On the basis of the fixed running speed of the rolled piece 30, when the rolling length of the rolled piece 30 needs to be adjusted, the rotation speed of the drum needs to be adjusted. If the number of the upper shear blades 11 and the lower shear blades 21 is too small, the rotation speed of the drum will be relatively large when the rolling length is short; if the number of the upper shear blades 11 and the lower shear blades 21 is too large, the rotation speed of the drum will be relatively small when the rolling length is long. In this embodiment, it is relatively reasonable to provide four pairs of matching upper shear blades 11 and lower shear blades 21 on the drum. Even when the rolling length is adjusted, it can ensure that the rotation speed of the drum remains within a reasonable range to avoid excessive or too low rotation speed. Of course, in other embodiments, the number of upper shear blades 11 and lower shear blades 21 can be adaptively adjusted according to actual needs.

[0052] According to one embodiment of the present utility model, Figure 1 As shown, the rotation direction B of the upper drum 10 is opposite to the rotation direction C of the lower drum 20; the movement direction of the bottom end of the upper drum 10 and the movement direction of the top end of the lower drum 20 are both the same as the running direction D of the rolled piece 30.

[0053] Specifically, in this embodiment, the upper drum 10 rotates counterclockwise and the lower drum 20 rotates clockwise, and the workpiece 30 therebetween runs toward the right side, that is, the movement direction of the upper shear blade 11 at the lower end of the upper drum 10, the movement direction of the lower shear blade 21 at the upper end of the lower drum 20, and the running direction D of the workpiece 30 are the same, all running toward the right side.

[0054] According to one embodiment of the present utility model, Figure 1 As shown, along the circumferential direction of the upper drum 10, a plurality of grooves 12 are provided thereon, and a plurality of upper shear blades 11 are respectively fixed in the plurality of grooves 12. The provision of the grooves 12 can prevent the upper shear blades 11 from extending too long in radial direction, thereby causing a larger gap to be formed between the upper drum 10 and the lower drum 20.

[0055] According to one embodiment of the present utility model, Figure 1 As shown, the axis of the upper drum 10 and the axis of the lower drum 20 are located in the same vertical plane, and a gap extending in the horizontal direction is formed therebetween, and the rolled piece 30 runs in the horizontal direction toward the gap.

[0056] The upper drum 10 and the lower drum 20 are vertically opposed to each other to facilitate adjustment of their initial positions, thereby ensuring that the upper shear blade 11 and the lower shear blade 21 can butt against each other during the rotation process.

[0057] Implementation method 2:

[0058] The utility model also provides a shearing machine, which includes a casing and two rotating shafts arranged in the casing. The output sections of the two rotating shafts extend out of the side wall of the casing and are respectively connected to the upper rotating drum 10 and the lower rotating drum 20 as described in the first embodiment.

[0059] The shearing machine of the utility model is used for continuously shearing the same rolled piece 30, and an upper drum 10 and a lower drum 20 are connected to the rotating shaft, wherein the upper shearing blade 11 on the upper drum 10 is arranged on the steel entry side M, and the lower shearing blade 21 on the lower drum 20 is arranged on the steel exit side N. After the rolled piece 30 is sheared, the upper shearing blade 11 generates a downward force on the head of the subsequent rolled piece 30, and the subsequent rolled piece 30 tends to be pressed downward by the upper shearing blade 11, thereby avoiding the generation of flying steel and ensuring that the rolled piece 30 can be continuously sheared when passing through the shearing machine.

[0060] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A continuous flying shear blade, characterized in that: It comprises an upper drum and a lower drum which are arranged opposite to each other, wherein at least two upper shearing blades are arranged on the circumferential outer side of the upper drum, and at least two lower shearing blades which can cooperate with the upper shearing blades are arranged on the circumferential outer side of the lower drum; A continuously running rolled piece is arranged between the upper drum and the lower drum. When the upper shearing blade is butted against the lower shearing blade to continuously shear the rolled piece, the upper shearing blade is located at the steel input side, and the lower shearing blade is located at the steel output side.

2. The continuous flying shear blade according to claim 1, characterized in that: The upper shearing blade has a first flat cutting edge at the end thereof. When the upper shearing blade starts to shear the workpiece, the first flat cutting edge forms surface contact with the upper surface of the workpiece.

3. The continuous flying shear blade according to claim 1 or 2, characterized in that: The lower shearing blade has a second flat cutting edge at the end thereof. When the lower shearing blade starts to shear the workpiece, the second flat cutting edge forms surface contact with the lower surface of the workpiece.

4. The continuous flying shear blade according to claim 1, characterized in that: Four upper shearing blades are arranged at intervals on the circumferential outer side of the upper rotating drum, and four lower shearing blades are arranged at intervals on the circumferential outer side of the lower rotating drum.

5. The continuous flying shear blade according to claim 1, characterized in that: The rotation direction of the upper drum is opposite to that of the lower drum.

6. The continuous flying shear blade according to claim 1 or 5, characterized in that: The movement direction of the bottom end of the upper drum and the movement direction of the top end of the lower drum are both the same as the running direction of the rolled piece.

7. The continuous flying shear blade according to claim 1, characterized in that: A plurality of grooves are provided on the upper rotating drum along its circumferential direction, and a plurality of upper shear blades are respectively fixed in the plurality of grooves.

8. The continuous flying shear blade according to claim 1, characterized in that: The axis of the upper drum and the axis of the lower drum are located in the same vertical plane.

9. The continuous flying shear blade according to claim 8, characterized in that: The rolled piece runs in a horizontal direction toward a gap formed between the upper drum and the lower drum.

10. A shearing machine, characterized in that: The machine comprises a casing and two rotating shafts arranged in the casing, wherein the output sections of the two rotating shafts extend out of the side walls of the casing and are respectively connected to the upper rotating drum and the lower rotating drum as described in any one of claims 1 to 9.

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