Strip steel shearing machine with adjustable shear blade backlash

Abstract

The utility model discloses a strip steel shearing machine with an adjustable shear blade backlash, which comprises a machine frame, an upper knife rest assembly and a lower knife rest assembly, the upper knife rest assembly and the lower knife rest assembly are movably connected to the machine frame, the strip steel shearing machine further comprises a driving device, one end of the driving device is installed on the machine frame, the driving end of the driving device is connected to the upper knife rest assembly, and the other end of the driving device is connected to the lower knife rest assembly. Under the driving of the driving device, the upper knife rest assembly moves in the horizontal direction and in the direction perpendicular to the running direction of strip steel. The upper knife rest assembly is in contact fit with the rack through a wedge-shaped matching surface in the vertical direction; the angle of the wedge-shaped matching surface is a preset determined value; when the upper knife rest assembly is driven by the driving device to transversely move, the upper knife rest assembly can longitudinally move under the action of the wedge-shaped matching face, then the lateral gap between the upper shear blade and the lower shear blade is changed, the shear blade lateral gap can be accurately adjusted, the adjusting efficiency is high, and the service life is long. And the requirements of an automatic production line on the backlash change of multiple varieties and multiple specifications of shear blades can be met.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to a strip shearing machine with adjustable shear blade clearance. Background Technology

[0002] In the metallurgical production field, strip steel production is quite common. Strip steel is divided into hot-rolled strip steel and cold-rolled strip steel. Hot-rolled strip steel production generally involves heating and rolling cast (continuous casting, pouring) slabs into coils, while cold-rolled strip steel production involves rolling hot-rolled steel coils into coils at room temperature. Both the entry and exit sections of the cold-rolled and hot-rolled strip steel processing lines are equipped with strip steel shearing machines for cutting off the ends and separating the coils.

[0003] Strip shearing machines are generally divided into transverse shearing machines (with blades arranged vertically) and longitudinal shearing machines (with blades arranged horizontally). Blade clearance refers to the gap between two overlapping blades. Transverse shearing machines are more commonly used. Since the thickness of cold-rolled strip steel ranges from 0.15 to 2.5 (3.0) mm, and the thickness of hot-rolled strip steel ranges from 0.8 to 6.0 (7.0) mm, the clearance between the upper and lower blades needs to be determined and adjusted according to the strip steel thickness to ensure shearing quality. In existing technologies, shearing machines mostly use fixed blade clearance or manual adjustment of blade clearance, which cannot meet the requirements of automated production lines for varying blade clearances across multiple varieties and specifications. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a strip shearing machine with adjustable shear blade clearance, which can precisely adjust the shear blade clearance, has high adjustment efficiency, and can meet the requirements of automated production lines for changes in shear blade clearance for multiple varieties and specifications.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A strip steel shearing machine with adjustable blade clearance includes a frame and an upper blade holder assembly and a lower blade holder assembly movably connected to the frame. The strip steel shearing machine also includes a drive device, one end of which is mounted on the frame and the drive end of which is connected to the upper blade holder assembly. Under the drive of the drive device, the upper blade holder assembly moves horizontally and perpendicular to the running direction of the strip steel.

[0007] The upper tool holder assembly and the frame are in contact and engaged through a wedge-shaped mating surface in the vertical direction;

[0008] The angle of the wedge-shaped mating surface is a preset and determined value;

[0009] When the upper blade holder assembly moves laterally under the drive of the drive device, it will move longitudinally under the action of the wedge-shaped mating surface, thereby changing the size of the lateral gap between the upper and lower shear blades.

[0010] Based on the above technical solution, the present invention can be further improved.

[0011] Furthermore, the driving device is a side clearance adjustment hydraulic cylinder that can be remotely controlled.

[0012] Furthermore, the wedge-shaped mating surface and the plane containing the overall frame of the machine frame form a wedge angle of 0.56 to 0.58 degrees.

[0013] Furthermore, the top of the upper tool holder assembly is fixedly connected to the top of the frame via several clamping devices, and the clamping devices can be remotely operated and controlled.

[0014] Furthermore, the strip shearing machine also includes a side clamping device;

[0015] The side clamping device includes a mounting part and a clamping part. The mounting part is fixedly connected to the frame, and the clamping part is in close contact with one side of the upper tool holder assembly.

[0016] The pressure from the side clamping device ensures that the upper tool holder assembly and the frame are always in close contact on the wedge-shaped mating surface.

[0017] Furthermore, the frame is an integral closed short stress line frame.

[0018] Furthermore, the strip shearing machine also includes an upper clamping roller assembly and a lower clamping roller assembly mounted on the frame;

[0019] The lower pinch roller assembly has coaxial gears at both ends, and a rack that meshes with the gears is installed on the frame. The gear and rack meshing transmission achieves consistent left and right lifting.

[0020] Furthermore, a buffer device is provided between the lower tool holder assembly and the frame.

[0021] A strip shearing machine with adjustable blade clearance.

[0022] The strip shearing machine with adjustable shear blade clearance disclosed in this utility model has the following beneficial technical effects compared with the prior art:

[0023] 1. It can automatically adjust the shear blade clearance to meet the requirements of continuous and automated production lines;

[0024] 2. The frame adopts an integrated closed short stress line frame structure, which can greatly improve the load-bearing capacity of the frame and adapt to the strong shear force of high-strength strip steel.

[0025] 3. Since the lower roller is driven to move up and down by hydraulic cylinders on both sides, in order to ensure that the left and right lifting is consistent, coaxial gears are installed on both sides of the lower roller and racks are installed on the frame. The meshing of the gears and racks achieves consistent left and right lifting.

[0026] 4. A buffer is installed under the lower tool post to reduce the impact on the machine frame when the lower tool post descends. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a specific embodiment of a strip steel shearing machine with adjustable shear blade clearance provided by this utility model;

[0028] Figure 2 for Figure 1 A front view schematic diagram of a specific embodiment of a strip shearing machine with adjustable shear blade clearance is shown.

[0029] Figure 3 for Figure 2 The schematic diagram shown is a cross-sectional view of the specific embodiment along the AA direction;

[0030] Figure 4 for Figure 2 A schematic diagram of a partial cross-sectional view of the specific embodiment shown along the BB direction;

[0031] Figure 5 for Figure 1 A three-dimensional structural schematic diagram of another angle of the specific embodiment shown.

[0032] The part numbers in the diagram are represented as follows:

[0033] 1. Frame, 2. Upper tool post assembly, 3. Lower tool post assembly, 4. Drive unit, 5. Wedge mating surface, 6. Clamping device, 7. Side clamping device, 71. Mounting part, 72. Clamping part, 8. Upper pinch roller assembly, 9. Lower pinch roller assembly, 91. Gear, 92. Rack, 10. Buffer device, 11. Lifting hydraulic cylinder. Detailed Implementation

[0034] The principles, features, and beneficial technical effects of this utility model are described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The examples given are only for explaining this utility model and are not intended to limit its scope. Furthermore, the omission of some components does not indicate a design defect or unclear principle description, but rather reflects that such parts are feasible under existing technology.

[0035] Please refer to Figures 1 to 5 , Figure 1This is a three-dimensional structural schematic diagram of a specific embodiment of a strip steel shearing machine with adjustable shear blade clearance provided by this utility model; Figure 2 for Figure 1 A front view schematic diagram of a specific embodiment of a strip shearing machine with adjustable shear blade clearance is shown. Figure 3 for Figure 2 The schematic diagram shown is a cross-sectional view of the specific embodiment along the AA direction; Figure 4 for Figure 2 A schematic diagram of a partial cross-sectional view of the specific embodiment shown along the BB direction; Figure 5 for Figure 1 A three-dimensional structural schematic diagram of another angle of the specific embodiment shown.

[0036] like Figures 1 to 5 As shown in the figure, a specific embodiment of a strip shearing machine with adjustable blade clearance disclosed in this utility model includes a frame 1 and an upper blade holder assembly 2 and a lower blade holder assembly 3 movably connected to the frame 1. It also includes a drive device 4, one end of which is mounted on the frame 1, and its driving end is connected to the upper blade holder assembly 2. Under the drive of the drive device 4, the upper blade holder assembly 2 moves horizontally and perpendicular to the running direction of the strip. The upper blade holder assembly 2 and the frame 1 are in contact and engaged through a vertical wedge-shaped mating surface 5. The angle of the wedge-shaped mating surface 5 is a preset value. When the upper blade holder assembly 2 moves laterally under the drive of the drive device 4, it will move longitudinally under the action of the wedge-shaped mating surface 5, thereby changing the lateral clearance between the upper and lower blades.

[0037] The lower blade holder assembly 3 includes a linkage mechanism, which is driven by a hydraulic cylinder to move the lower assembly upward and perform the shearing action.

[0038] Since the angle of the aforementioned wedge-shaped mating surface 5 is a preset value, the extension of the drive device 4 by a certain value can be precisely controlled as needed, causing the upper tool holder assembly 2 to also undergo a proportional longitudinal displacement, facilitating precise control. Preferably, the wedge-shaped angle formed between the wedge-shaped mating surface 5 and the plane containing the overall frame of the frame 1 is 0.56 to 0.58 degrees, and most preferably, the wedge-shaped mating surface 5 can be designed to be 0.57 degrees. Thus, when the drive device 4 drives the upper tool holder assembly 2 to move horizontally by 1 mm, the side clearance between the upper and lower blades increases / decreases by 0.01 mm.

[0039] To achieve remote control, the drive device 4 is a remotely controllable backlash adjustment hydraulic cylinder. By remotely controlling this backlash adjustment hydraulic cylinder to extend or retract it, the purpose of remotely and automatically adjusting the shear blade backlash can be achieved. Preferably, the backlash adjustment hydraulic cylinder is equipped with a linear sensor to achieve precise displacement control.

[0040] The top of the upper tool holder assembly 2 is fixedly connected to the top of the frame 1 via several clamping devices 6, and the clamping devices 6 can be remotely operated and controlled. The clamping devices 6 can consist of 3 to 7 remotely controllable clamping cylinders, arranged at intervals on the frame 1.

[0041] The strip shearing machine also includes a side clamping device 7; the side clamping device 7 includes a mounting part 71 and a clamping part 72, the mounting part 71 is fixedly connected to the frame 1, and the clamping part 72 is in close contact with one side of the upper blade holder assembly 2; through the pressure of the side clamping device 7, the upper blade holder assembly 2 and the frame 1 are always in close contact on the wedge-shaped mating surface 5. When the upper blade holder assembly 2 moves laterally under the action of the driving device 4, the clamping part 72 ensures that the upper blade holder assembly 2 is always in close contact with the frame 1 longitudinally, thereby ensuring that the frame 1 and the upper blade holder assembly 2 always slide along the wedge-shaped mating surface 5.

[0042] The above solution enables automatic adjustment of the gap between the upper and lower shear blades of the shearing machine. The specific steps are as follows:

[0043] 1. Control the clamping device 6 to put it in the loosened state;

[0044] 2. Remotely control the side clearance adjustment hydraulic cylinder at the end to extend or retract it;

[0045] 3. After measuring and adjusting the shear blade side clearance and reaching the target value, control the clamping device 6 to clamp the upper blade holder assembly 2 onto the frame 1 for fixation.

[0046] With the continuous advancement of materials science, high-strength strip steel is the direction of development, and the shearing force is getting larger and larger. Therefore, the frame 1 of the shearing machine needs to be able to withstand more shearing force. Therefore, in order to improve the load-bearing capacity of the frame 1, the frame 1 of the shearing machine disclosed in this application is an integral closed short stress line frame structure.

[0047] In the prior art, strip shearing machines generally include an upper clamping roller assembly 8 and a lower clamping roller assembly 9 mounted on the frame 1. To accommodate the thickness of the steel plate, the distance between the upper and lower clamping rollers also needs to be adjusted, which is generally achieved by adjusting the height of the lower clamping roller. Specifically, a lifting hydraulic cylinder 11 is usually set at each end of the lower clamping roller, with the fixed end installed on both sides of the frame 1 and the driving end installed on the lower clamping roller. Although this method can adjust the height of the lower clamping roller, it is difficult to ensure that the two ends can lift and lower in the same way because the lower clamping roller is generally long. To solve this problem, in this application, coaxial gears 91 are provided at both ends of the lower clamping roller assembly 9, and a rack 92 that meshes with the gears 91 is installed on the frame 1. The left and right lifting and lowering are consistent through the meshing transmission of the gears 91 and rack 92.

[0048] When the shearing machine is shearing steel plates, the shearing force is very large, which usually causes a very large impact on the frame 1. In order to improve the service life of the equipment, in this application, a buffer device 10 is provided between the lower blade holder assembly 3 and the frame 1. The number can be set to 3 to 5. The material is preferably rubber, which can be compressed and deformed during operation, thereby playing a buffering role.

[0049] In summary, the shearing machine provided in this application has the following characteristics:

[0050] 1. The shearing mechanism uses a linkage mechanism driven by a hydraulic cylinder;

[0051] 2. The shear blade clearance adjustment adopts a hydraulic cylinder-driven wedge surface mechanism;

[0052] 3. The shear blade is fixed using a short-distance high-pressure hydraulic clamping mechanism;

[0053] 4. Equipped with a hydraulic pinch roller mechanism to ensure synchronized gear and rack shearing quality;

[0054] 5. Equipped with a strip clamping and buffering mechanism to ensure shearing quality.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A strip steel shearing machine with adjustable blade clearance, comprising a frame and an upper blade holder assembly and a lower blade holder assembly movably connected to the frame, characterized in that, The strip shearing machine also includes a drive device, one end of which is mounted on the frame and the drive end is connected to the upper blade holder assembly. Under the drive of the drive device, the upper blade holder assembly moves horizontally and perpendicular to the running direction of the strip. The upper tool holder assembly and the frame are in contact and engaged through a vertical wedge-shaped mating surface; The angle of the wedge-shaped mating surface is a preset and determined value; When the upper blade holder assembly moves laterally under the drive of the drive device, it will move longitudinally under the action of the wedge-shaped mating surface, thereby changing the size of the lateral gap between the upper and lower shear blades.

2. The strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, The drive device is a side clearance adjustment hydraulic cylinder that can be remotely controlled.

3. The strip shearing machine with adjustable blade side gap according to claim 1, characterized in that The wedge-shaped mating surface and the plane containing the overall frame of the machine frame form a wedge angle of 0.56 to 0.58 degrees.

4. A strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, The top of the upper tool holder assembly is fixedly connected to the top of the frame via several clamping devices, and the clamping devices can be remotely operated and controlled.

5. A strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, The strip shearing machine also includes a side clamping device; The side clamping device includes a mounting part and a clamping part. The mounting part is fixedly connected to the frame, and the clamping part is in close contact with one side of the upper tool holder assembly. The pressure from the side clamping device ensures that the upper tool holder assembly and the frame are always in close contact on the wedge-shaped mating surface.

6. A strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, The frame is an integral closed short stress line frame.

7. A strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, The strip shearing machine also includes an upper clamping roller assembly and a lower clamping roller assembly mounted on the frame; The lower pinch roller assembly has coaxial gears at both ends, and a rack that meshes with the gears is installed on the frame. The gear and rack meshing transmission achieves consistent left and right lifting.

8. A strip shearing machine with adjustable blade clearance according to claim 1, characterized in that, A buffer device is provided between the lower tool holder assembly and the frame.

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