Blade adjustable band shear flying shear machine

Abstract

The application discloses a blade-adjustable plate strip shearing flying shear which comprises a blade shaft, a blade, a blade clamping device and a blade adjusting assembly; the blade is fixed in a blade mounting groove arranged on the outer circle of the blade shaft through the clamping device; the blade adjusting assembly comprises an adjustable height component which is arranged at the bottom of the blade mounting groove and is used for supporting the blade and can be controlled in height so as to adjust the extension length of the blade; a plurality of groups of blades can be arranged, the used blade is adjusted to the working height, and the heights of the remaining blades are reduced to not interfere with the use of the working blade; the plurality of groups of blades can be straight blades, concave-convex blades and concave-convex blades with different shapes, or blades with the same function can be arranged, in the case that one group of blades is damaged, another group of blades can be used without replacement, the blades can be selected and used according to the requirement without dismounting and replacing, the operation cycle of the flying shear is greatly prolonged, the consumption of manpower, material resources and energy is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of metallurgical machinery technology, and particularly to a strip shear with adjustable blades. Background Technology

[0002] Flying shears are crucial equipment used in steel companies to shear metal billets, and their structural performance directly impacts the production efficiency of rolling production lines. There are many structural forms of flying shear mechanisms, with the drum-type flying shear being one example. This type of flying shear includes two cutter shafts, on which flying shear blades are mounted. The relative rotation of the cutter shafts drives the blades on the two shafts to complete the shearing process.

[0003] In existing technologies, the cutter shaft can only be equipped with a maximum of one set of blades (including head cutting blades and tail cutting blades) or only one blade. After a period of use, the blades will be damaged and the machine will need to be stopped for replacement, resulting in a short service life. Furthermore, there are different requirements in the practice of shearing sheet metal. For example, different head structures are needed when shearing the head of the sheet metal, such as local concave, to facilitate the mechanical biting of the next process and ensure smooth production. Sometimes, the shape of the concave also has different requirements.

[0004] In existing technologies, for applications requiring different sheet metal heads, an additional process is added after shearing, namely punching the slit, which increases the number of processes and wastes manpower, material resources, and energy.

[0005] Therefore, it is necessary to improve the existing flying shear machine to solve the problem of the single function of the flying shear blade in the existing technology. The blade can be selected and used as needed without disassembly and replacement. Even if the same type of blade is used without special requirements, the operating cycle of the flying shear machine can be extended, the consumption of manpower, material resources and energy can be reduced, and the production efficiency can be improved. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a strip shear with adjustable blades, which solves the problem of the single function of the blades in the prior art. The blades can be selected and used as needed without disassembly and replacement. Even if the same type of blade is used without special requirements, the operating cycle of the flying shear can be extended, reducing the consumption of manpower, material resources and energy, and improving production efficiency.

[0007] The blade-adjustable strip shear of the present invention includes a blade shaft, a blade, a blade clamping device, and a blade adjustment assembly;

[0008] The blade is fixed in the blade mounting groove on the outer circle of the cutter shaft by a clamping device. The blade adjustment assembly includes a height adjustable component located at the bottom of the blade mounting groove to support the blade and whose height can be controlled to adjust the extension length of the blade.

[0009] Furthermore, the adjustment assembly also includes an active component, which engages with the height-adjustable component via an inclined plane. The height-adjustable component supports the blade, and the active component can be driven to move along the inclined plane to adjust the height of the height-adjustable component, thereby adjusting the extension length of the blade.

[0010] Furthermore, both the active component and the height-adjustable component are plate-shaped structures. The active component is axially movable at the bottom of the blade mounting groove and has a driving slope on its high side surface. The height-adjustable component is movably disposed at the bottom of the blade in the blade height direction and has a driven slope that cooperates with the driving slope.

[0011] Furthermore, the blade adjustment assembly also includes an adjustment drive, which is disposed on the blade shaft and used to drive the active member to reciprocate along the axial direction, thereby driving the height adjustable member to move in the blade height direction.

[0012] Furthermore, the blade clamping device includes a clamping block that can be driven to reciprocate along the blade height direction. One side of the blade is close to one side wall of the blade mounting groove, and the other side of the blade is engaged with the clamping block through an inclined surface. When the clamping block is driven to reciprocate, the blade is clamped in the blade mounting groove or released.

[0013] Furthermore, the clamping device also includes a hydraulic cylinder assembly, which includes a piston, a piston rod, and an elastic element. The end of the piston rod extending out of the hydraulic cylinder body is connected to the clamping block. The elastic element generates a preload force on the piston, which drives the piston rod through the piston, thereby driving the clamping block to clamp the blade.

[0014] Furthermore, the side of the clamping block used to clamp the blade is beveled.

[0015] Furthermore, the cutter shaft includes an upper cutter shaft and a lower cutter shaft; the blade includes a head cutter blade and a tail cutter blade, and a head cutter blade and a tail cutter blade form a set;

[0016] The cutting blade includes a convex blade mounted on the upper cutting shaft and a concave blade mounted on the lower cutting shaft, or the cutting blade includes a concave blade mounted on the upper cutting shaft and a convex blade mounted on the lower cutting shaft.

[0017] The blade of the convex blade is formed by a straight edge and at least one raised edge, and the blade of the concave blade is formed by a straight edge and at least one recessed edge. The number and position of the recessed edge and the raised edge are corresponding and the shape is appropriate.

[0018] Furthermore, at least two sets of blades are installed on the upper blade shaft, and the number of blade sets on the lower blade shaft corresponds to that on the upper blade shaft. The extension length of the blades can be adjusted by the blade adjustment assembly according to usage requirements.

[0019] Furthermore, the protruding edge of the convex blade is shaped as a semi-circle, rectangle, trapezoid, triangle, or irregular protrusion, and the concave edge of the concave blade is shaped as a semi-circle, rectangle, trapezoid, triangle, or irregular concavity.

[0020] The beneficial effects of this invention are as follows: The adjustable blade strip shear flying shear of this invention adopts a structure with adjustable blade height, and can be equipped with multiple sets of blades. During operation, the blade in use is adjusted to the working height, while the height of the remaining blades is lowered to not interfere with the use of the working blade. The multiple sets of blades can be straight blades, concave-convex blades, and concave-convex blades of different shapes. Of course, blades with the same function can also be installed, so if one set is damaged, another set can be used without replacement. This solves the problem of the single function of the flying shear blades in the prior art. They can be selected and used as needed without disassembly and replacement, which greatly extends the operating cycle of the flying shear, reduces the consumption of manpower, material resources, and energy, and improves production efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the upper cutter shaft (with blade adjustment assembly);

[0024] Figure 3 Exploded view of the active component and height adjustment component in operation;

[0025] Figure 4 Side view of the drive unit and height adjustment unit;

[0026] Figure 5 This is a diagram showing the combined structure of the upper and lower cutter shafts (the clamping device is shown, but the adjustment components are not).

[0027] Figure 6 for Figure 5 Enlarged view at point A;

[0028] Figure 7 A schematic diagram showing the structure with two sets of blades;

[0029] Figure 8 A schematic diagram showing the structure with three sets of blades;

[0030] Figure 9 This is a diagram showing the results of shearing the sheet material. Detailed Implementation

[0031] As shown in the figure: The blade-adjustable strip shear flying shear of this embodiment includes a blade shaft, a blade, a blade clamping device 5 and a blade adjustment assembly 6;

[0032] The blade is fixed in the blade mounting groove on the outer circle of the cutter shaft by the clamping device 5. The blade adjustment assembly 6 includes a height adjustable component 602, which is located at the bottom of the blade mounting groove to support the blade and whose height can be controlled to adjust the extension length of the blade.

[0033] The mounting and mating structure of the cutter shaft and the blade adopts the clamping device 5, which can be the existing mounting structure. The blade mounting groove is an axial groove, the length of which should be able to accommodate the entire blade, and the width direction should be able to accommodate the blade and the components of the clamping device, which will not be described in detail here.

[0034] The height of the height-adjustable component 602 can be controlled by existing drive structures, such as driving a lead screw nut with a motor, where the nut can serve as a support for the blade, or direct drive by a hydraulic cylinder, all of which can achieve the purpose of the invention.

[0035] Of course, the flying shear machine also has an overall frame 7, a transmission structure (including transmission gear 8, backlash-free gear 9, and bearing 10), etc., which are existing technologies and will not be described in detail here.

[0036] In this embodiment, the adjustment component further includes an active member 601. The active member 601 and the height adjustable member 602 are engaged by an inclined plane. The height adjustable member is used to support the blade. The active member can be driven to move along the inclined plane to adjust the height of the height adjustable member, thereby adjusting the extension length of the blade.

[0037] The inclined plane mating refers to the two components fitting together using an inclined plane. When there is relative movement in the inclined plane direction, the height of the blade changes due to the action of the inclined plane, which in turn changes the height (extension length) of the blade, putting it into a working state or a retracted state. Of course, in this case, the structure needs to limit the bottom of the driving component, which should be located at the bottom of the groove or other limiting structure set at the bottom, to prevent the height adjustment component from moving downwards when driving it. Since the driving component is limited in height, when it moves in the inclined plane direction, the inclined plane acts on the height adjustment component, causing it to move upwards or return to its original position, thereby adjusting the extension length of the blade. Of course, the adjustment process requires the cooperation of a clamping device, such as loosening and using gravity or other external forces to lock the blade in and then tightening it.

[0038] In this embodiment, both the driving component 601 and the height-adjustable component 602 are plate-shaped structures. The driving component 601 is axially movably disposed at the bottom 101 of the blade mounting groove and has a driving inclined surface 6011 on its high side surface. The height-adjustable component 602 is movably disposed at the bottom of the blade in the blade height direction and has a driven inclined surface 6021 that cooperates with the driving inclined surface 6011. As shown in the figure, since the length of the driving component 601 should be adapted to the blade length, multiple driving inclined surfaces are also provided in the length direction, resulting in more uniform force distribution. At the same time, the driven inclined surface 6021... The driving ramps are located on the lower side surface of the height-adjustable component, and their number and slope are compatible with those of the driving ramps. Of course, the slope of both ramps, combined with the surface roughness, should have a certain self-locking capability, allowing the surface to slide open directly under the pressure of the blade. Simultaneously, locking components can be installed, such as automatic locking pins (locking pins driven by a motor or hydraulic cylinder). As shown in the figure, during use, the driving component 601 has its degree of freedom limited to reciprocating motion and has no degree of freedom in the height direction, while the height-adjustable component 602 has its degree of freedom limited to the height direction and has no degree of freedom in the lateral direction. Limiting components can be installed, such as... Figure 4 The limiting block 604 in the middle, combined with the setting on the cutter shaft, can achieve the limiting, which can be achieved by general mechanical means, and will not be elaborated here.

[0039] In this embodiment, the blade adjustment assembly further includes an adjustment drive 603, which is disposed on the blade shaft and used to drive the active member 601 to reciprocate axially, thereby driving the height-adjustable member to move in the blade height direction; as Figure 2 , 3 As shown in Figure 4 ( Figure 2 The dotted lines in the figure represent the driving component and the height adjustment component. In this embodiment, the adjustment drive component 603 is a hydraulic cylinder fixedly installed at the end of the cutter shaft. The driving component is connected to the piston rod 6031 of the hydraulic cylinder to realize reciprocating motion adjustment. The driving fluid of the hydraulic cylinder is provided through the pipeline rotary joint 11 installed at the end of the cutter shaft (which can also provide the power source required for the clamping device). Of course, the drive component can also be a motor-driven lead screw nut (with a good self-locking effect) or a mechanical structure such as a gear rack, which will not be described in detail here.

[0040] In this embodiment, the blade clamping device 5 includes a clamping block 501 that can be driven to reciprocate along the blade height direction. One side of the blade is close to one side wall of the blade mounting groove 101 (a protective block 102 is also fixed on this side wall to prevent the tool shaft from being worn). The other side of the blade is engaged with the clamping block 501 through an inclined surface. When the clamping block 501 is driven to reciprocate, the blade is either pressed into the blade mounting groove 101 or released. The inclined surface engagement refers to applying force along the inclined surface direction to make the inclined surface pair form a clamping force on the blade. If the inclined surface is set on the clamping block 501, it should be inclined towards the blade from low to high. If the inclined surface is set on the blade, it should also be inclined towards the blade from low to high. When the external force drives the clamping block to move to a lower position, the inclined surface will generate lateral and downward component forces to press the blade. At the same time, when the height adjustment component disengages from the driving component, the downward component force can press the blade into the retraction direction, realizing the switching between multiple sets of tools.

[0041] In this embodiment, the clamping device 5 further includes a hydraulic cylinder assembly 502, which includes a cylinder body 5021, a piston 5022, a piston rod 5023, and an elastic element 5024. The piston rod 5024 extends out of the end of the hydraulic cylinder 5021 and connects to the clamping block 501. The elastic element 5024 generates a preload force on the piston, which drives the piston rod through the piston, thereby driving the clamping block 501 to clamp the blade. As shown in the figure, the hydraulic cylinder body 5021 is installed in the mounting groove (which communicates with the blade mounting groove 101) provided in the cutter shaft. The piston rod 5023 extends outward and connects to the clamping block 501. At the same time, the hydraulic cylinder body 5021 is fitted with a disc spring assembly (elastic element 5024) inside and outside the piston rod 5023, which applies a downward preload force to the piston 5022 to lock the blade when there is no hydraulic drive. When it is necessary to release the blade, the hydraulic cylinder drives the piston to overcome the disc spring force and move upward to release the blade.

[0042] In this embodiment, the side of the clamping block 501 used to clamp the blade is inclined. The inclined surface is set on the clamping block, which has good active force application, is easy to replace and has low cost.

[0043] It should be noted that the aforementioned clamping and adjusting devices are applicable to the installation of each blade. For flying shears, there are generally two blade shafts. Figure 6 As shown by the curved arrow (the straight arrow represents the direction of sheet metal movement), the relative rotation completes the shearing. Therefore, the clamping devices and height adjustment components used for the blades on both cutter shafts are identical. The clamping devices described in this manual all adopt... Figure 6 The structure shown is omitted here; the adjustment components are as follows. Figure 2 , 3 The structure shown in Figure 4 is illustrated using the blade on the upper cutter shaft 1 as an example. The height adjustment components of the other blades are all the same in structure and will not be described in detail here.

[0044] In this embodiment, the cutter shaft includes an upper cutter shaft 1 and a lower cutter shaft 2. The matching relationship between the upper cutter shaft 1 and the lower cutter shaft 2 is prior art and will not be described in detail here. The blade includes a head cutter blade and a tail cutter blade, and one head cutter blade and one tail cutter blade form a group. As shown in the figure, the head cutter blade and the tail cutter blade in a group of blades are arranged in the diameter direction of the corresponding cutter shaft, which will not be described in detail here.

[0045] The cutting blade includes a convex blade 3 mounted on the upper cutting shaft 1 and a concave blade 4 mounted on the lower cutting shaft 2, or the cutting blade includes a concave blade mounted on the upper cutting shaft 1 and a convex blade mounted on the lower cutting shaft; the two can be interchanged to achieve the purpose of the invention; correspondingly, the tail cutting blade 3a on the upper cutting shaft and the convex blade 3 are arranged in the diametrical direction of the upper cutting shaft 1, and the tail cutting blade 4a on the lower cutting shaft 2 and the concave blade 4 are arranged in the diametrical direction of the lower cutting shaft 2.

[0046] As shown in the figure, the cutting edge of the convex blade 3 is formed by a straight edge 301 and at least one raised edge 302, and there are three raised edges 302 in the figure; the concave blade 4 is formed by a straight edge 401 and at least one recessed edge 402. The number and position of the recessed edge 402 and the raised edge 302 are corresponding and their shapes are conformal. Conformal means that the shapes are exactly the same, the only difference is that one is raised and the other is recessed; the direction of the protrusion and the concavity here is the rotational tangential direction, which can cut a suitable concavity at the head of the plate.

[0047] The convex and concave blades work together to cut out the head of the plate with a concave inlet, which can meet the biting requirements of the next process. This can be achieved using a flying shear, avoiding the need for additional equipment, saving manpower and resources and improving production efficiency. As shown in the figure, the blade is installed in the blade mounting groove through blade shims. By replacing the shims, the cutting clearance of the blade can be adjusted, which will not be described in detail here.

[0048] In this embodiment, at least two sets of blades are mounted on the upper blade shaft 1, such as... Figure 7 As shown, two convex blades 3' are installed on the upper cutter shaft for shearing the head of the sheet metal, and two corresponding tail blades 3a' are arranged in the diameter direction. Similarly, two concave blades 4' are installed on the lower cutter shaft for shearing the head of the sheet metal, and two corresponding tail blades 4a' are arranged in the diameter direction. The number of blade sets on the lower cutter shaft corresponds to that on the upper cutter shaft, and the extension length of the blades can be adjusted according to usage requirements via the blade adjustment assembly. Figure 8 As shown in this embodiment, two or three sets of blades can be installed on the cutter shaft to meet different shearing needs. Furthermore, even if all blades have the same shape, production can continue after one set of blades is damaged, greatly improving production efficiency.

[0049] In this embodiment, the protruding edge of the convex blade is semi-circular, rectangular, trapezoidal, triangular, or irregularly protruding, and correspondingly, the recessed edge of the concave blade is semi-circular, rectangular, trapezoidal, triangular, or irregularly recessed. Figure 9 As shown, the different shapes of the blades achieve different functions, and can cut the sheet material a into the required shape, which will not be elaborated here.

[0050] The directional terms "high" and "low" mentioned in this invention are relative to the blade. The direction in which the blade extends out of the mounting groove (i.e., the direction of the cutting edge) is "high," and conversely, the bottom of the mounting groove is "low." This will not be elaborated further here.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A strip shear with adjustable blades, characterized in that: Includes a cutter shaft, cutter blades, cutter blade clamping device, and cutter blade adjusting assembly; The blade is fixed in the blade mounting groove on the outer circle of the cutter shaft by a clamping device. The blade adjustment assembly includes a height adjustable component located at the bottom of the blade mounting groove to support the blade and whose height can be controlled to adjust the extension length of the blade. The cutter shaft includes an upper cutter shaft and a lower cutter shaft; the blade includes a head cutter blade and a tail cutter blade, and one head cutter blade and one tail cutter blade form a set; The cutting blade includes a convex blade mounted on the upper cutting shaft and a concave blade mounted on the lower cutting shaft, or the cutting blade includes a concave blade mounted on the upper cutting shaft and a convex blade mounted on the lower cutting shaft. The blade of the convex blade is formed by a straight edge and at least one raised edge, and the blade of the concave blade is formed by a straight edge and at least one recessed edge. The number and position of the recessed edge and the raised edge are corresponding and the shape is appropriate. At least two sets of blades are installed on the upper cutter shaft, and the number of blade sets on the lower cutter shaft corresponds to that on the upper cutter shaft. The extension length of the blades can be adjusted by the blade adjustment assembly according to the usage requirements. During operation, the blade in use is adjusted to the working height, and the height of the remaining blades is lowered so as not to interfere with the use of the working blade.

2. The blade-adjustable strip shear flying shear according to claim 1, characterized in that: The adjustment assembly also includes an active component, which engages with a height-adjustable component via an inclined plane. The height-adjustable component supports the blade, and the active component can be driven to move along the inclined plane to adjust the height of the height-adjustable component, thereby adjusting the extension length of the blade.

3. The blade-adjustable strip shear flying shear according to claim 2, characterized in that: Both the active component and the height-adjustable component are plate-shaped structures. The active component is axially movable at the bottom of the blade mounting groove and has a driving slope on its high side surface. The height-adjustable component is movably disposed at the bottom of the blade in the blade height direction and has a driven slope that cooperates with the driving slope.

4. The blade-adjustable strip shear flying shear according to claim 3, characterized in that: The blade adjustment assembly further includes an adjustment drive, which is disposed on the blade shaft and used to drive the active component to reciprocate along the axial direction, thereby driving the height adjustable component to move in the blade height direction.

5. The blade-adjustable strip shear flying shear according to claim 4, characterized in that: The blade clamping device includes a clamping block that can be driven to reciprocate along the blade height direction. One side of the blade is close to one side wall of the blade mounting groove, and the other side of the blade is engaged with the clamping block through an inclined surface. When the clamping block is driven to reciprocate, the blade is either clamped in the blade mounting groove or released.

6. The blade-adjustable strip shear flying shear according to claim 5, characterized in that: The clamping device further includes a hydraulic cylinder assembly, which includes a piston, a piston rod, and an elastic element. The end of the piston rod extending out of the hydraulic cylinder body is connected to the clamping block. The elastic element generates a preload force on the piston, which drives the piston rod through the piston, thereby driving the clamping block to clamp the blade.

7. The blade-adjustable strip shear flying shear according to claim 5, characterized in that: The side of the clamping block used to clamp the blade is beveled.

8. The blade-adjustable strip shear flying shear according to claim 6, characterized in that: The protruding edge of the convex blade is shaped as a semi-circle, rectangle, trapezoid, triangle, or irregular protrusion, and the concave edge of the concave blade is shaped as a semi-circle, rectangle, trapezoid, triangle, or irregular concavity.

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