A kind of off-line adjusting device for gap between knife holder and blade of cold shearing sectional machine

Abstract

This utility model discloses an offline adjustment device for the blade gap of a cold shear slitting machine, relating to the technical field of steel production equipment. It includes: a slide rail frame, a cover plate, an adjusting screw, an upper dovetail, and a lower dovetail. The adjusting screw is connected to the top surface of the upper dovetail, and an adjusting nut is provided on the adjusting screw. An upper pressure plate spring is located on the lower right side of the upper dovetail, with one end connected to the upper dovetail and the other end connected to an upper pressure plate. The upper pressure plate has an inclined structure that cooperates with the upper blade holder, and a slider that cooperates with the slide rail is provided on the upper dovetail. A lower pressure plate spring is located on the upper left side of the lower dovetail, with one end connected to the lower dovetail and the other end connected to the lower pressure plate. The lower pressure plate has an inclined structure that cooperates with the lower blade holder. This utility model's device has a simple structure and is easy to operate, enabling rapid and precise adjustment of the blade gap of a cold shear machine, effectively improving the shearing efficiency and quality of the cold shear machine.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel production equipment, and in particular relates to an offline adjustment device for the blade gap of a cold shear slitting machine. Background Technology

[0002] In steel rolling mills, cold shears are used for fixed-length slitting. The shearing quality of the cold shear directly affects the product quality. In order to ensure the quality of the sheared end face, the gap between the upper and lower blades during shearing is crucial. If the blade gap is not properly adjusted, it will directly lead to quality defects such as burrs and bevels on the sheared end face of the round steel.

[0003] The cold shear machine blade holders currently in use are post-processed blade holders with significant machining errors. Direct use of these blade holders would result in excessive blade gaps, affecting product quality. Therefore, adjustments are necessary. However, due to space constraints, cold shear control limitations, and blade length restrictions, online adjustment of the blade gap is extremely difficult. Consequently, it is challenging to guarantee that the gaps of different blade specifications can meet the required 0.10-0.20mm usage gap. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to achieve safe and convenient adjustment of the blade gap of the cold shear machine blade holder, so as to improve the efficiency and quality of shearing production.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] This utility model provides an offline adjustment device for the blade gap of a cold shear segmenting machine, comprising:

[0007] The slide rail frame includes four slide rails;

[0008] A cover plate is located above the slide rail frame, and a through hole is provided in the center of the cover plate;

[0009] An adjusting screw passes through the through hole and connects to the top surface of the upper dovetail. An adjusting nut is provided on the adjusting screw, and the adjusting nut is located above the cover plate.

[0010] An upper pressure plate spring is provided on the lower right side of the upper dovetail. One end of the upper pressure plate spring is connected to the upper dovetail, and the other end is connected to the upper pressure plate. The upper pressure plate screw can rotate through the upper pressure plate and connect to the upper dovetail. The upper pressure plate is provided with a sloping structure that cooperates with the upper knife holder. The upper dovetail is provided with a slider that cooperates with the slide rail.

[0011] A lower pressure plate spring is provided on the upper left of the lower dovetail. One end of the lower pressure plate spring is connected to the lower dovetail, and the other end is connected to the lower pressure plate. The lower pressure plate screw can rotate through the lower pressure plate and connect to the lower dovetail. The lower pressure plate is provided with a bevel structure that cooperates with the lower tool holder.

[0012] The upper dovetail, lower dovetail, and cover plate are parallel, and the bottom surface of the lower dovetail is flush with the bottom surface of the slide rail frame.

[0013] The four slide rails are of the same length and are arranged symmetrically around the adjusting screw.

[0014] The included angle of the inclined surface structure that mates with the upper tool holder on the upper pressure plate is 55°-65°, and the included angle of the inclined surface structure that mates with the lower tool holder 4 on the lower pressure plate is 55°-65°.

[0015] The upper dovetail has a first dovetail groove in the middle to limit the upper tool holder, and the lower dovetail has a second dovetail groove in the middle to limit the lower tool holder.

[0016] The size of the adjusting nut is larger than that of the through hole.

[0017] The upper dovetail and the slide rail frame are both provided with side ribs, the slider is located on the side ribs, and the upper dovetail can move up and down within the slide rail frame.

[0018] At least two sliders are provided on each side rib.

[0019] Beneficial effects: The offline adjustment device for the blade gap of the cold shear segmenting machine can realize the rapid and precise adjustment of the blade gap of the cold shear machine, so that the gap of different specifications of blades can reach the usage gap requirement of 0.1-0.2mm. The device has a simple structure and is easy to operate, which can effectively improve the shearing efficiency and shearing quality of the cold shear machine. Attached Figure Description

[0020] Figure 1 This is a side view of the offline adjustment device for the blade gap of the cold shear segmenting machine according to this utility model;

[0021] Figure 2 This is a front view structural diagram of the offline adjustment device for the blade gap of the cold shear segmenting machine according to this utility model.

[0022] In the diagram: 1-Upper blade; 2-Lower blade; 3-Upper blade holder; 4-Lower blade holder; 5-Upper pressure plate; 6-Lower pressure plate; 7-Upper dovetail; 8-Lower dovetail; 9-Slide rail frame; 10-Slider; 11-Adjusting screw; 12-Adjusting nut; 13-Cover plate; 14-Upper pressure plate screw; 15-Lower pressure plate screw; 16-Upper pressure plate spring; 17-Lower pressure plate spring. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] refer to Figure 1 and Figure 2 As shown, an offline adjustment device for the blade gap of a cold shear slitting machine includes:

[0026] The slide rail frame 9 includes four slide rails of the same length, which are arranged symmetrically around the adjusting screw 11.

[0027] Cover plate 13 is disposed above slide rail frame 9, and a through hole is provided in the center of cover plate 13;

[0028] An adjusting screw 11 passes through the through hole and connects to the top surface of the upper dovetail 7. An adjusting nut 12 is provided on the adjusting screw 11. The adjusting nut 12 is located above the cover plate 13 and its size is larger than the through hole.

[0029] The slide rail frame 9 is provided with an upper dovetail 7 and a lower dovetail 8 that are parallel to the cover plate 13;

[0030] An upper pressure plate spring 16 is provided on the lower right side of the upper dovetail 7. One end of the upper pressure plate spring 16 is connected to the upper dovetail 7, and the other end is connected to the upper pressure plate 5. The upper pressure plate screw 14 is rotatably passed through the upper pressure plate 5 and connected to the upper dovetail 7. The upper pressure plate 5 is provided with a sloping structure that cooperates with the upper tool holder 3 to push the upper tool holder 3 to move. The upper dovetail 7 is provided with a dovetail groove in the middle that cooperates with the upper tool holder 3 to limit the upper tool holder 3 and prevent the upper blade 1 and the lower blade 2 from colliding and being damaged. The upper dovetail 7 is provided with a slider 10 that cooperates with the slide rail.

[0031] A lower pressure plate spring 17 is provided on the upper left of the lower dovetail 8. One end of the lower pressure plate spring 17 is connected to the lower dovetail 8, and the other end is connected to the lower pressure plate 6. The lower pressure plate screw 15 is rotatably connected to the lower dovetail 8 after passing through the lower pressure plate 6. The lower pressure plate 6 is provided with a sloping structure that cooperates with the lower tool holder 4 to push the upper tool holder 3 to move. The middle of the upper dovetail 7 is provided with a dovetail groove that cooperates with the upper tool holder 3 to limit the upper tool holder 3 and prevent the upper blade 1 and the lower blade 2 from colliding and being damaged.

[0032] The bottom surface of the lower dovetail 8 is flush with the bottom surface of the slide rail frame 9.

[0033] The included angle of the inclined surface structure on the upper pressure plate 5 that cooperates with the upper tool holder 3 is in the range of 55°-65°, and the included angle of the inclined surface structure on the lower pressure plate 6 that cooperates with the lower tool holder 4 is in the range of 55°-65°. In this embodiment, both included angles are set to 60°.

[0034] The upper dovetail 7 and lower dovetail 8, the upper pressure plate 5 and lower pressure plate 6, the upper pressure plate spring 16 and lower pressure plate spring 17, and the upper pressure plate screw 14 and lower pressure plate screw 15 are all centrally symmetrically arranged.

[0035] The adjustment process for the tool holder blade in this utility model is as follows:

[0036] Rotate the adjusting nut 12 clockwise. Since the adjusting screw 11 is fixedly connected to the upper dovetail plate 7, the upper dovetail plate 7 will move upward as the adjusting nut 12 rotates, adjusting the upper dovetail plate 7 to meet the installation height of the upper tool holder 3 and the lower tool holder 4.

[0037] Loosen the upper pressure plate screw 14. Since the upper pressure plate 5 is supported by the upper pressure plate spring 16, the upper pressure plate 5 will be lifted by the upper pressure plate spring 16, creating a gap between the upper pressure plate 5 and the upper dovetail plate 7. At this time, the upper cutter holder 3, which needs to adjust the gap, and the assembled upper cutter 1 can be installed into the device. Tighten the upper pressure plate screw 14 of the upper pressure plate 5. Since the inclined structure of the upper cutter holder 3 and the upper pressure plate 5 is a 60° angle fit, as the upper pressure plate screw 14 is tightened, the upper cutter holder 3 will move towards the center and press against the dovetail groove of the upper dovetail 7 until the pressure plate screw is tightened and the cutter holder no longer moves. Install and adjust the lower cutter holder 4 according to the above adjustment scheme for the upper cutter holder 3.

[0038] Rotate the adjusting nut 12 counterclockwise to move the upper dovetail plate 7 downwards until the upper blade 1 and lower blade 2 directly overlap by 5mm. This is the overlap during normal shearing of the cold shear machine. Because the four slide rails cooperate with the slider 10, the entire system will not tilt when the upper dovetail 7 moves up and down, and the gap between the slide rail frame 9 and the slider 10 will not affect the blade adjustment gap. At this time, use a feeler gauge to measure the gap between the upper and lower blades 2 from the inside to the outside, and add adjusting shims between the blade and the blade holder according to the gap, so that the gap between the upper blade 1 and the lower blade 2 meets the requirement of 0.10-0.20mm. At this time, the blade holder gap adjustment is completed.

[0039] Rotate the adjusting nut 12 clockwise to make the upper dovetail 7 face upward. When the upper blade 1 and the lower blade 2 have a sufficient distance, loosen the upper pressure plate screw 14 and the lower pressure plate screw 15. At this time, under the action of the upper pressure plate spring 16 and the lower pressure plate spring 17, the upper blade holder 3 and the lower blade holder 4 will return to a relaxed state, and the upper blade holder 3 and the lower blade holder 4 can be pulled out. At this time, the blade holders and blades meet the cold shearing gap requirements.

[0040] Example 2

[0041] In this embodiment, side ribs are provided at the connection between the upper dovetail 7 and the slide rail frame 9, and at least two sliders 10 that cooperate with the slide rail are installed on each side rib. The sliders 10 are high-precision sliders 10, which ensure that the upper dovetail 7 will not be tilted when it moves up and down in the slide rail frame 9, and can ensure that the gap between the slide rail frame 9 and the high-precision sliders 10 will not affect the blade adjustment gap.

[0042] In summary, the offline adjustment device for the blade gap of the cold shear segmenting machine can achieve rapid and precise adjustment of the blade gap of the cold shear machine, so that the gap of blades of different specifications can meet the usage gap requirements of 0.1-0.2mm. The device has a simple structure and is easy to operate, which can effectively improve the shearing efficiency and shearing quality of the cold shear machine.

[0043] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An offline adjustment device for the blade gap of a cold shear slitting machine, characterized in that, include: The slide rail frame includes four slide rails; A cover plate is located above the slide rail frame, and a through hole is provided in the center of the cover plate; An adjusting screw passes through the through hole and connects to the top surface of the upper dovetail. An adjusting nut is provided on the adjusting screw, and the adjusting nut is located above the cover plate. An upper pressure plate spring is provided on the lower right side of the upper dovetail. One end of the upper pressure plate spring is connected to the upper dovetail, and the other end is connected to the upper pressure plate. The upper pressure plate screw can rotate through the upper pressure plate and connect to the upper dovetail. The upper pressure plate is provided with a sloping structure that cooperates with the upper knife holder. The upper dovetail is provided with a slider that cooperates with the slide rail. A lower pressure plate spring is provided on the upper left of the lower dovetail. One end of the lower pressure plate spring is connected to the lower dovetail, and the other end is connected to the lower pressure plate. The lower pressure plate screw can rotate through the lower pressure plate and connect to the lower dovetail. The lower pressure plate is provided with a bevel structure that cooperates with the lower tool holder.

2. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 1, characterized in that, The upper dovetail, lower dovetail, and cover plate are parallel, and the bottom surface of the lower dovetail is flush with the bottom surface of the slide rail frame.

3. The offline adjustment device for the blade gap of the cold shear slitting machine according to claim 1, characterized in that, The four slide rails are of the same length and are arranged symmetrically around the adjusting screw.

4. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 1, characterized in that, The included angle of the inclined surface structure that mates with the upper tool holder on the upper pressure plate is 55°-65°, and the included angle of the inclined surface structure that mates with the lower tool holder on the lower pressure plate is 55°-65°.

5. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 1, characterized in that, The upper dovetail has a first dovetail groove in the middle to limit the upper tool holder, and the lower dovetail has a second dovetail groove in the middle to limit the lower tool holder.

6. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 1, characterized in that, The size of the adjusting nut is larger than that of the through hole.

7. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 1, characterized in that, The upper dovetail and the slide rail frame are both provided with side ribs, the slider is located on the side ribs, and the upper dovetail can move up and down within the slide rail frame.

8. The offline adjustment device for blade gap of the cold shear slitting machine according to claim 7, characterized in that, At least two sliders are provided on each side rib.

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