Strip steel slitting shear

Abstract

The utility model belongs to the technical field of strip steel rolling equipment, and discloses a strip steel slitting shear which comprises a rack, an upper cutter beam, a lower cutter beam, a synchronizing mechanism and at least one hydraulic cylinder. The upper cutter beam is fixedly arranged on the machine frame, the lower cutter beam is located under the upper cutter beam, the lower cutter beam is driven by a hydraulic cylinder to do linear reciprocating motion so as to be close to or away from the upper cutter beam, and a channel for strip steel to penetrate through is formed between the upper cutter beam and the lower cutter beam. The left side and the right side of the cutter beam of the machine frame are respectively provided with a vertical guide column, the synchronizing mechanism comprises racks and gears, the racks are arranged on the left guide column and the right guide column, the gears are arranged on the left side and the right side of the lower cutter beam, and the two gears are meshed with the racks on the same side. And synchronous operation of the left and right sides of the lower cutter beam is ensured. The strip steel slitting shear has good stability, the shearing effect can be optimized, and the cutting efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel rolling equipment, in particular to a strip steel slitting shear. Background Art

[0002] In steel production lines, strip slitting shears are important equipment to ensure production continuity and safety, especially at the entrance of the rolling mill. Its main function is to accurately shear the passing strip through the relative movement of the upper and lower shearing parts. In the high-speed, continuous production process, when the strip breaks or needs to be repaired, the strip slitting shear can quickly and accurately cut the strip, thereby preventing the interruption of the production line and reducing production losses.

[0003] However, the traditional strip slitting shears have some shortcomings in structure and function, such as complex structure, low cutting stability and jamming during operation, which not only affect the cutting efficiency and equipment reliability, but may also cause damage to the equipment, further increasing maintenance costs and production losses.

[0004] In view of the above defects, the applicant proposes a new type of strip slitting shear to overcome the above technical defects. Utility Model Content

[0005] The utility model aims to provide a strip steel slitting shear, which is arranged at the entrance of a rolling mill and is used to cut the strip steel when the strip is broken or under maintenance. The utility model has a simple and stable structure and can cut the strip steel quickly and accurately, thus ensuring smooth operation.

[0006] To achieve the above purpose, the solution of the utility model is: a strip steel slitting shear, comprising a frame, an upper blade beam, a lower blade beam, a synchronization mechanism and at least one hydraulic cylinder; the upper blade beam is fixedly arranged on the frame, the lower blade beam is located directly below the upper blade beam, and the lower blade beam is driven by the hydraulic cylinder to perform linear reciprocating motion to approach or move away from the upper blade beam, and a channel for the strip steel to pass through is formed between the upper and lower blade beams;

[0007] The frame is provided with a vertical guide column on the left and right sides of the knife beam. The synchronization mechanism includes a rack and a gear. The rack is set on the left and right guide columns. Gears are provided on the left and right sides of the lower knife beam. The two gears are meshed with the racks on the same side. When the hydraulic cylinder drives the lower knife beam to move, the meshing of the gear and the rack ensures that the left and right sides of the lower knife beam run synchronously.

[0008] Furthermore, the cylinder body of the hydraulic cylinder is fixed on the frame and is located below the lower knife beam. The piston rod of the hydraulic cylinder is connected to the lower knife beam, and the piston rod is retracted to drive the lower knife beam vertically upward to approach the upper knife beam or vertically downward to move away from the upper knife beam.

[0009] Furthermore, there are two hydraulic cylinders driving the lower knife beam, one hydraulic cylinder is located on the front side of the lower knife beam, and its piston rod is connected to the front side of the lower knife beam, and the other hydraulic cylinder is located on the rear side of the lower knife beam, and its piston rod is connected to the rear side of the lower knife beam. The two hydraulic cylinders are arranged in a centrally symmetrical manner.

[0010] Furthermore, the upper blade beam and the lower blade beam are both provided with shear blades, and the upper and lower shear blades follow the blade beams to move to contact the surface of the strip steel for cutting the strip steel, and the shear blades are made of 6CrW2Si.

[0011] Furthermore, a gasket is provided on the upper blade beam or the lower blade beam, and the gasket is used to adjust the opening degree between the upper shear blade and the lower shear blade.

[0012] Furthermore, the opening between the upper shearing blade and the lower shearing blade ranges from 250 to 350 mm.

[0013] Furthermore, the left and right sides of the lower shear blade are inclined from one side to the other side, and the inclination angle is 2 degrees.

[0014] Furthermore, a plurality of small holes are provided on the upper shearing blade and the lower shearing blade.

[0015] Furthermore, the left fixed sleeve of the upper knife beam is arranged on the guide column on the left side of the frame, the right fixed sleeve of the upper knife beam is arranged on the guide column on the right side of the frame, the left movable sleeve of the lower knife beam is arranged on the left guide column, and the right movable sleeve of the lower knife beam is arranged on the right guide column.

[0016] After adopting the above scheme, the beneficial effects of the utility model are:

[0017] The strip steel slitting shears provided by the utility model realize efficient and stable cutting of the strip steel through the coordinated action of the upper blade beam, the lower blade beam, the synchronization mechanism and the hydraulic cylinder, thus providing a strong guarantee for the continuity and safety of the steel production line.

[0018] By introducing the gear rack synchronization mechanism, the stability and accuracy of the lower blade beam during movement can be ensured, thereby improving the cutting efficiency and quality of the cut surface of the strip. In addition, two symmetrically arranged hydraulic cylinders ensure the balance and stability of the lower blade beam during movement. This design avoids equipment deflection or distortion caused by uneven force, thereby extending the service life of the equipment and reducing production interruptions caused by equipment failure. The inclined design of the lower shear blade helps to reduce friction and resistance during the shearing process, thereby improving shearing efficiency and the quality of the sheared section. This design makes the cross section of the strip smoother after cutting, reduces the amount of subsequent processing, and improves production efficiency.

[0019] In summary, the strip steel slitting shears of the utility model have significant beneficial effects in improving cutting efficiency and accuracy, enhancing equipment stability, facilitating adjustment and maintenance, optimizing shearing effects and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a strip steel slitting shear according to an embodiment of the utility model;

[0021] Figure 2 It is a side sectional view of a strip steel slitting shear according to one embodiment of the utility model.

[0022] Description of labels:

[0023] 1. Frame; 2. Upper knife beam; 3. Lower knife beam; 4. Guide column; 5. Hydraulic cylinder; 51. Cylinder body; 52. Piston rod;

[0024] 6. Synchronous mechanism; 61. Rack; 62. Gear; 7. Upper shearing blade; 8. Lower shearing blade; 9. Small hole. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] The utility model provides a strip steel slitting shear, such as Figure 1 and 2 As shown, it includes a frame 1, an upper blade beam 2, a lower blade beam 3, a synchronization mechanism 6 and at least one hydraulic cylinder 5. Figure 1 As shown, the upper blade beam 2 is fixedly arranged on the frame 1 as a stationary cutting component, while the lower blade beam 3 is vertically movable relative to the upper blade beam 2. A channel for the strip steel to pass through is formed between the upper blade beam 2 and the lower blade beam 3. The size of the channel can be adjusted by the relative movement between the upper blade beam 2 and the lower blade beam 3.

[0027] The hydraulic cylinder 5 provides the power for the lower blade beam 3 to move, and the hydraulic cylinder 5 drives the lower blade beam 3 to perform linear reciprocating motion. Specifically, the cylinder body 51 of the hydraulic cylinder 5 is fixed on the frame 1 and is located below the lower blade beam 3. The piston rod 52 of the hydraulic cylinder 5 is connected to the lower blade beam 3. The piston rod 52 is telescopic to drive the lower blade beam 3 vertically upward to approach the upper blade beam 2 or vertically downward to move away from the upper blade beam 2. The output force of the hydraulic cylinder 5 is strong and stable, which can meet the force and speed requirements required for strip cutting. At the same time, the hydraulic cylinder 5 can also achieve rapid response and precise control to ensure the timeliness and accuracy of the cutting process.

[0028] In this embodiment, the number of hydraulic cylinders 5 driving the lower blade beam 3 is two to ensure the stability and precise movement of the lower blade beam 3. Among them, one hydraulic cylinder 5 is located at the front side of the lower blade beam 3, and its piston rod 52 is firmly connected to the front side of the lower blade beam 3 through a connecting mechanism (such as a pin, a connecting plate, etc.). Another hydraulic cylinder 5 is located at the rear side of the lower blade beam 3 and is connected to the rear side of the lower blade beam 3 through the piston rod 52 in the same way. The two hydraulic cylinders 5 are centrally symmetrically arranged in the design. Such a layout helps to produce a uniform force distribution during operation, avoids the deflection or distortion of the lower blade beam 3, thereby ensuring the stability and accuracy of the operation. At the same time, in order to ensure the synchronization and coordination of the two hydraulic cylinders 5, they can be connected to the same set of hydraulic control systems, and the control system can accurately control the extension and contraction of the piston rods 52 of the two hydraulic cylinders 5, thereby realizing accurate control and adjustment of the lower blade beam 3.

[0029] The frame 1 is provided with a vertical guide column 4 on the left and right sides of the knife beam, the left side of the upper knife beam 2 is fixedly sleeved on the guide column 4 on the left side of the frame 1, the right side of the upper knife beam 2 is fixedly sleeved on the guide column 4 on the right side of the frame 1, the left and right movable sleeves of the lower knife beam 3 are arranged on the left guide column 4, and the right side movable sleeve of the lower knife beam 3 is arranged on the right guide column 4.

[0030] The synchronization mechanism 6 is a key component to ensure the stable and accurate movement of the lower blade beam 3. The synchronization mechanism 6 is mainly composed of a rack 61 and a gear 62. Figure 1 As shown, the rack 61 is arranged on the left and right guide posts 4, and a gear 62 is arranged on the left and right sides of the lower blade beam 3, as shown in FIG. Figure 2 As shown. The two gears 62 are precisely meshed with the racks 61 on the same side of each other to form a stable transmission system. When the hydraulic cylinder 5 starts to drive the lower blade beam 3 to move, the gears 62 on the left and right sides will mesh with the racks 61 at the same time. This meshing mechanism ensures that the left and right sides of the lower blade beam 3 can operate synchronously. Through the cooperation of the gear 62 and the rack 61, the lower blade beam 3 can maintain extremely high stability and accuracy during the movement, avoiding the deflection or distortion caused by the lack of synchronization between the two sides. In addition, considering the wear resistance and reliability of the synchronization mechanism 6 for long-term use, the gear 62 and the rack 61 are made of high-strength, wear-resistant materials, and are precisely processed and strictly tested to ensure that they can maintain stable performance during use. At the same time, the meshing clearance between the rack 61 and the gear 62 is also carefully adjusted to ensure that the transmission efficiency and stability are in the best state.

[0031] The upper blade beam 2 and the lower blade beam 3 of the strip steel slitting shear are both provided with shear blades. When the upper blade beam 2 and the lower blade beam 3 move relative to each other, the upper shear blade 7 and the lower shear blade 8 will closely contact the surface of the strip steel, thereby effectively cutting the strip steel. In order to ensure the durability and shearing effect of the shear blades, the material of the shear blades is 6CrW2Si, which is a high-hardness, wear-resistant alloy steel, which is very suitable for shearing strip steel. In order to adjust the opening between the upper shear blade 7 and the lower shear blade 8 to adapt to strip steels of different thicknesses, a gasket (not shown in the figure) is provided on the upper blade beam 2 or the lower blade beam 3. By increasing or decreasing the number or thickness of the gaskets, the opening between the upper shear blade 7 and the lower shear blade 8 can be accurately adjusted to ensure the accuracy and stability of the shearing process. In actual operation, the opening range between the upper shear blade 7 and the lower shear blade 8 is usually set to 250-350mm, which can cover most common strip steel thicknesses. Of course, this opening range can also be fine-tuned according to specific production requirements and strip steel specifications. In this embodiment, the opening between the upper shearing blade 7 and the lower shearing blade 8 is preferably 300 mm.

[0032] The upper shear blade 7 and the lower shear blade 8 are both provided with a plurality of small holes 9, the function of the small holes 9 is to facilitate air circulation, to facilitate the separation of the strip and the shear blade after shearing, and to reduce the possibility of adhesion between the strip and the shear blade.

[0033] In addition, in order to optimize the shearing effect and reduce the shearing resistance, the left and right sides of the lower shear blade 8 are designed to be inclined from one side to the other, forming an inclination angle of 2 degrees. This design allows the lower shear blade 8 to better fit the surface of the strip, reducing friction and resistance during the shearing process, thereby improving the shearing efficiency and the quality of the sheared section.

[0034] The working process of the utility model strip steel slitting shear is as follows:

[0035] When the strip needs to be cut, first, the control system will issue a command to start the hydraulic cylinder 5. The piston rods 52 of the two hydraulic cylinders 5 extend upward synchronously under the precise control of the control system to push the lower blade beam 3, which moves upward steadily along the preset gear 62 rack 61 synchronization mechanism 6. As the lower blade beam 3 continues to rise, the lower shear blade 8 gradually approaches the upper shear blade 7. When the two reach the predetermined matching position, the lower shear blade 8 and the upper shear blade 7 will work together to cut the strip with sufficient pressure and precision.

[0036] After the cutting operation is completed, the control system will issue a command again to control the piston rod 52 of the hydraulic cylinder 5 to retract. The retraction of the piston rod 52 will simultaneously drive the lower blade beam 3 to reset downward, so that it returns to the initial position.

[0037] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0038] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A strip steel slitting shear, characterized in that: It includes a frame, an upper blade beam, a lower blade beam, a synchronization mechanism and at least one hydraulic cylinder; the upper blade beam is fixedly arranged on the frame, the lower blade beam is located directly below the upper blade beam, and the lower blade beam is driven by the hydraulic cylinder to make a linear reciprocating motion to approach or move away from the upper blade beam, and a channel is formed between the upper and lower blade beams for the strip to pass through; The frame is provided with a vertical guide column on the left and right sides of the knife beam. The synchronization mechanism includes a rack and a gear. The rack is set on the left and right guide columns. Gears are provided on the left and right sides of the lower knife beam. The two gears are meshed with the racks on the same side. When the hydraulic cylinder drives the lower knife beam to move, the meshing of the gear and the rack ensures that the left and right sides of the lower knife beam run synchronously.

2. A strip steel slitting shear according to claim 1, characterized in that: The cylinder body of the hydraulic cylinder is fixed on the frame and is located below the lower knife beam. The piston rod of the hydraulic cylinder is connected to the lower knife beam. The piston rod is telescopic to drive the lower knife beam vertically upward to approach the upper knife beam or vertically downward to move away from the upper knife beam.

3. The strip steel slitting shear according to claim 1, characterized in that: There are two hydraulic cylinders driving the lower knife beam, one hydraulic cylinder is located on the front side of the lower knife beam, and its piston rod is connected to the front side of the lower knife beam, and the other hydraulic cylinder is located on the rear side of the lower knife beam, and its piston rod is connected to the rear side of the lower knife beam. The two hydraulic cylinders are arranged symmetrically.

4. The strip steel slitting shear according to claim 1, characterized in that: The upper blade beam and the lower blade beam are both provided with shear blades, which move with the blade beam to contact the surface of the strip steel for cutting the strip steel, and the material of the shear blades is 6CrW2Si.

5. A strip steel slitting shear according to claim 4, characterized in that: A gasket is provided on the upper blade beam or the lower blade beam, and the gasket is used to adjust the opening degree between the upper shear blade and the lower shear blade.

6. A strip steel slitting shear according to claim 4, characterized in that: The opening range between the upper and lower shear blades is 250-350mm.

7. The strip steel slitting shear according to claim 4, characterized in that: The left and right sides of the lower shear blade are inclined from one side to the other side, and the inclination angle is 2 degrees.

8. The strip steel slitting shear according to claim 4, characterized in that: A plurality of small holes are provided on the upper shearing blade and the lower shearing blade.

9. The strip steel slitting shear according to claim 1, characterized in that: The left fixed sleeve of the upper knife beam is arranged on the guide column on the left side of the frame, the right fixed sleeve of the upper knife beam is arranged on the guide column on the right side of the frame, the left movable sleeve of the lower knife beam is arranged on the left guide column, and the right movable sleeve of the lower knife beam is arranged on the right guide column.

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