Shear blade gap adjusting device of drum-type flying shear

Abstract

The utility model discloses a shear blade gap adjusting device of drum-type flying shears, which comprises a rack, a driving mechanism, a worm, a worm gear, an upper drum and a lower drum which are sequentially in transmission fit are mounted on the rack, a threaded shaft lever is arranged on the worm gear, a threaded piece is fixedly arranged on the rack, the threaded piece is provided with a threaded hole, and the threaded hole is communicated with the threaded shaft lever. A first bearing is connected between one end of the upper roller and the threaded shaft rod, a second bearing is installed between the upper roller and the machine frame, a third bearing is installed between the lower roller and the machine frame, the upper roller and the lower roller are in meshing transmission through a bevel gear, an upper shear blade is installed on the upper roller, and a lower shear blade is installed on the lower roller. The driving mechanism is used for driving the worm to rotate so as to drive the worm gear to rotate and move in the axis direction, then the upper roller is driven to move in the axis direction, the upper roller and the lower roller rotate relatively, then the shear blade gap between the upper shear blade and the lower shear blade is adjusted, and the operation process is simpler, easier and more labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical steel rolling technology, specifically to a shear blade gap adjustment device for a roller-type flying shear. Background Technology

[0002] Currently, flying shears are widely used in continuous strip steel production lines in the metallurgical industry. However, linkage-type flying shears, due to their large moment of inertia, are not well-suited for high-speed shearing. Drum-type flying shears, with their blades mounted on a circular drum, have a smaller moment of inertia, making them suitable for high-speed shearing. When shearing strip steel of different thicknesses, flying shears often require different blade gaps. Existing drum-type flying shears suffer from problems with blade gap adjustment, including complex operation, lack of ease and convenience, and low adjustment precision. This makes it impossible to adjust the blade gap to a suitable size when shearing strip steel of different thicknesses, affecting the shearing effect and the service life of the blades. Utility Model Content

[0003] The present invention aims to provide a blade gap adjustment device for a roller-type flying shear to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a shearing blade gap adjustment device for a roller-type flying shear, comprising a frame, on which a drive mechanism, a worm gear, a worm wheel, an upper roller, and a lower roller are installed in sequence. A threaded shaft is provided on the worm wheel. A threaded component is fixedly installed on the frame, the threaded component having a threaded hole. The threaded shaft is threadedly connected to the threaded hole of the threaded component. A first bearing is connected between one end of the upper roller and the threaded shaft. A second bearing is installed between the upper roller and the frame. A third bearing is installed between the lower roller and the frame. The upper roller and the lower roller are driven by helical gear meshing. An upper shearing blade is installed on the upper roller, and a lower shearing blade is installed on the lower roller. The drive mechanism is used to drive the worm gear to rotate, thereby driving the worm wheel to rotate and move along the axial direction, thereby driving the upper roller to move along the axial direction, so that the upper roller and the lower roller rotate relative to each other, thereby adjusting the shearing blade gap between the upper and lower shearing blades.

[0005] Preferably, the worm gear and the upper roller are coaxially arranged, the upper roller and the lower roller are arranged vertically parallel, and the axial directions of the worm gear, the upper roller and the lower roller are all parallel to each other in the left-right direction.

[0006] Preferably, the driving mechanism is a drive handwheel, and a reducer is connected between the drive handwheel and the worm gear. The reducer and the drive handwheel are located at the left and right ends of the top of the frame, respectively, and the axial direction of the worm gear is parallel to the vertical direction.

[0007] Preferably, the first bearing is a bearing that can only rotate and not move axially. The outer ring of the first bearing is fixedly mounted on the threaded shaft, and the inner ring of the first bearing is fixedly mounted on one end of the upper roller and rotates with the upper roller.

[0008] Preferably, the second bearing is a rotatable and axially movable roller bearing. The outer ring of the second bearing is fixedly mounted on the frame, and the inner ring of the second bearing is fixedly mounted on the outside of the upper roller and rotates with the upper roller and moves along the axial direction.

[0009] Preferably, the third bearing is a bearing that can only rotate and not move axially. The outer ring of the third bearing is fixedly mounted on the frame, and the inner ring of the third bearing is fixedly mounted on the outside of the lower roller and rotates with the lower roller.

[0010] This utility model has the following beneficial effects:

[0011] This invention simplifies, makes easy and effortless the adjustment of the blade gap in a roller-type flying shear, and improves the adjustment accuracy. It allows for the blade gap to be adjusted to a suitable size when shearing strips of different thicknesses, ensuring the shearing effect of the strip and extending the service life of the blades. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0013] Attached diagram labels: 1. Frame, 2. Drive mechanism, 3. Reducer, 4. Worm, 5. Worm wheel, 51. Threaded shaft, 6. Upper roller, 7. Lower roller, 8. Upper shear blade, 9. Lower shear blade, 10. Threaded component, 11. First bearing, 12. Second bearing, 13. Third bearing, 14. Helical gear. Detailed Implementation

[0014] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and 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 drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0015] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] See Figure 1 As shown in the figure, as an embodiment of the present invention, a blade gap adjustment device for a roller-type flying shear is provided, including a frame 1. A drive mechanism, a worm gear 4, a worm wheel 5, an upper roller 6, and a lower roller 7 are sequentially mounted on the frame 1. A threaded shaft 51 is provided on the worm wheel 5. A threaded component 10 is fixedly mounted on the frame 1, and the threaded component 10 has a threaded hole. The threaded shaft 51 is threadedly connected to the threaded hole of the threaded component 10. A first bearing 11 is connected between one end of the upper roller 6 and the threaded shaft 51. The first bearing 11 is a bearing that can only rotate and not move axially. The outer ring of the first bearing 11 is fixedly mounted on the threaded shaft 51. The inner ring of the upper roller 6 is fixedly installed on one end of the upper roller 6 and rotates with the upper roller 6. A second bearing 12 is installed between the upper roller 6 and the frame 1. The second bearing 12 is a rotatable and axially movable roller bearing. The outer ring of the second bearing 12 is fixedly installed on the frame 1. The inner ring of the second bearing 12 is fixedly installed on the outside of the upper roller 6 and rotates with the upper roller 6 and moves along the axial direction. A third bearing 13 is installed between the lower roller 7 and the frame 1. The third bearing 13 is a rotatable and non-axially movable bearing. The outer ring of the third bearing 13 is fixedly installed on the frame 1. The inner ring of the third bearing 13 is fixedly installed on the outside of the lower roller 7 and rotates with the lower roller 7.

[0018] The drive mechanism is a drive handwheel 2, and a reducer 3 is connected between the drive handwheel 2 and the worm 4. The reducer 3 and the drive handwheel 2 are located at the left and right ends of the top of the frame 1, respectively. The axis of the worm 4 is parallel to the vertical direction, that is, the worm 4 is set vertically. The worm wheel 5 and the upper roller 6 are set coaxially. The upper roller 6 and the lower roller 7 are set vertically parallel. The axis of the worm wheel 5, the upper roller 6, and the lower roller 7 are all parallel to the horizontal direction, thereby ensuring that the transmission effect between the various transmission components is more balanced and stable, and the accuracy is higher.

[0019] The upper roller 6 and the lower roller 7 are driven by the meshing of a helical gear 14. The upper roller 6 is equipped with an upper shear blade 8, and the lower roller 7 is equipped with a lower shear blade 9. The drive mechanism is used to drive the worm gear 4 to rotate, which in turn drives the worm wheel 5 to rotate and move along the axial direction, thereby driving the upper roller 6 to move along the axial direction. Due to the meshing action of the helical gear 14, the upper roller 6 and the lower roller 7 must rotate relative to each other in order for the upper roller 6 to move along the axial direction, thereby adjusting the shear blade gap between the upper shear blade 8 and the lower shear blade 9.

[0020] The working principle of this utility model is as follows: By rotating the drive handwheel 2, the worm 4 is driven to rotate under the transmission action of the reducer 3, which in turn drives the worm wheel 5 to rotate. Since the threaded shaft 51 rotates with the worm wheel 5 and is threadedly connected to the threaded hole of the threaded part 10, the threaded part 10 is fixed. Therefore, the threaded shaft 51 can move in the left and right direction (i.e., the axial direction) within the threaded hole during rotation. Since one end of the upper roller 6 is connected to the threaded shaft 51 by a first bearing 11 that can only rotate but not move axially, the threaded shaft 51 can drive the upper roller 6 to move in the left and right direction (i.e., the axial direction) without directly driving the upper roller 6 to rotate. However, due to the meshing action of the helical gear 14, the upper roller 6 and the lower roller 7 must rotate relative to each other in order for the upper roller 6 to move in the left and right direction (i.e., the axial direction), thereby adjusting the size of the shear blade gap between the upper shear blade 8 and the lower shear blade 9. This invention simplifies, makes easy and effortless the adjustment of the blade gap in a roller-type flying shear, and improves the adjustment accuracy. It allows for the blade gap to be adjusted to a suitable size when shearing strips of different thicknesses, ensuring the shearing effect of the strip and extending the service life of the blades.

[0021] The blade gap adjustment device of this roller-type flying shear is mainly used in continuous strip steel processing lines for carbon steel, stainless steel, etc. In other cases, the drive mechanism can also be other drive sources besides the drive handwheel 2, such as a motor; this is not a limitation.

[0022] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A blade gap adjustment device for a roller-type flying shear, characterized in that: The device includes a frame, on which are mounted a drive mechanism, a worm gear, a worm wheel, an upper roller, and a lower roller, all sequentially connected in a transmission configuration. A threaded shaft is mounted on the worm wheel. A threaded component with a threaded hole is fixedly mounted on the frame. The threaded shaft is threaded into the threaded hole of the threaded component. A first bearing connects one end of the upper roller to the threaded shaft. A second bearing is installed between the upper roller and the frame. A third bearing is installed between the lower roller and the frame. The upper and lower rollers are driven by helical gears. An upper shear blade is mounted on the upper roller, and a lower shear blade is mounted on the lower roller. The drive mechanism drives the worm gear to rotate, which in turn drives the worm wheel to rotate and move along its axis. This, in turn, drives the upper roller to move along its axis, causing the upper and lower rollers to rotate relative to each other, thereby adjusting the shear blade gap between the upper and lower shear blades.

2. The blade gap adjustment device for the roller-type flying shear according to claim 1, characterized in that: The worm gear and the upper roller are coaxially arranged, and the upper roller and the lower roller are arranged vertically parallel to each other. The axial directions of the worm gear, the upper roller, and the lower roller are all parallel to each other in the left-right direction.

3. The blade gap adjustment device for the roller-type flying shear according to claim 1, characterized in that: The drive mechanism is a drive handwheel, and a reducer is connected between the drive handwheel and the worm gear. The reducer and the drive handwheel are located at the left and right ends of the top of the frame, respectively, and the axis of the worm gear is parallel to the vertical direction.

4. The blade gap adjustment device for the roller-type flying shear according to claim 1, characterized in that: The first bearing is a bearing that can only rotate and cannot move axially. The outer ring of the first bearing is fixedly mounted on the threaded shaft, and the inner ring of the first bearing is fixedly mounted on one end of the upper roller and rotates with the upper roller.

5. The blade gap adjustment device for the roller-type flying shear according to claim 1, characterized in that: The second bearing is a rotatable and axially movable roller bearing. The outer ring of the second bearing is fixedly mounted on the frame, and the inner ring of the second bearing is fixedly mounted on the outside of the upper roller and rotates with the upper roller and moves along the axial direction.

6. The blade gap adjustment device for the roller-type flying shear according to claim 1, characterized in that: The third bearing is a bearing that can only rotate and not move axially. The outer ring of the third bearing is fixedly mounted on the frame, and the inner ring of the third bearing is fixedly mounted on the outside of the lower roller and rotates with the lower roller.

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