Steel strip cold-rolling mill outlet guide and guard device

Abstract

The invention discloses a steel strip cold-rolling mill outlet guide and guard device which comprises a first jaw and a second jaw which are sequentially installed, the first jaw comprises two first jaw seats, first guide plates and first guide wheels, the first guide plates and the first guide wheels are arranged on the first jaw seats, and the first guide plates are arranged at the upper end and the lower end of each first jaw seat respectively. The first guide wheels are rotationally mounted on the first jaw seats, at least two first guide wheels are sequentially mounted on each first jaw seat, the outer arc surface of each first guide wheel forms a first steel belt moving side boundary, and a first steel belt moving channel is defined by the first guide wheels and the first guide plates on the two first jaw seats; the structure of the second jaw is the same as that of the first jaw, the first steel belt moving channel coincides with the center line of a second steel belt moving channel formed in the second jaw, and the boundary of the first steel belt moving side coincides with the boundary of the second steel belt moving side. According to the steel belt straightening device, the input steel belt can be guided and protected, and the steel belt can be leveled and straightened.

Description

Technical Field

[0001] The invention relates to steel saw blade production equipment, in particular to an exit guide device for a steel strip cold rolling mill. Background Art

[0002] At present, the steel strip production industry needs to flatten the welds of composite steel strips due to process requirements. During the rolling process, the internal structure of the steel strip will slip left and right and front and back. This slip is uneven, which will cause the steel strip coming out of the rolling mill to swing. This swing will further affect the stability of the rolling process, and ultimately the straightness of the steel strip along the rolling direction does not meet the requirements, and an S-shaped bend will appear.

[0003] Chinese patent CN115283462A discloses a rolled flat steel exit guide, which uses a flat steel moving channel surrounded by an upper clamping plate, a lower clamping plate and two clamping strips to guide the flat steel. Since the steel strip is in contact with a plate or a strip, it is a sliding friction when the steel strip is running. If the hardness of these plates (strips) is greater than that of the steel strip, the steel strip will be scratched. If the hardness is less than that of the steel strip, these plates (strips) are very easy to wear and cannot play a guiding role. In addition, the method of changing the thickness and width of the clamping strips to adapt to the rolling of strips of different specifications in this scheme has low production efficiency.

[0004] Chinese patent CN210280199U discloses a cold rolling mill inlet and outlet guide device, which achieves the purpose of guiding by setting two first vertical rollers, a first fixed flat roller, and a first movable flat roller to form a tic-tac-toe guide channel to clamp the steel strip. However, when this guide device is used, the steel strip is squeezed and easily twisted and deformed under the clamping force of the two first vertical rollers, and the first fixed flat roller and the first movable flat roller press against each other, which cannot level the steel strip. In addition, when this solution is used for different types of products, the adjustment of the guide channel is time-consuming and labor-intensive; it also does not have a straightening function for the steel strip.

[0005] In addition, the existing cold-rolled steel strip exit guides do not have the function of detecting the straightness of the steel strip while rolling. It is impossible to immediately understand whether the straightness of the rolled piece meets the requirements, and measures cannot be taken in time, resulting in the risk of scrapping the rolled piece. Summary of the invention

[0006] One of the purposes of the present invention is to provide a steel strip cold rolling mill outlet guide device with a straightening function.

[0007] A second object of the present invention is to provide a steel strip cold rolling mill outlet guide device with a leveling function.

[0008] The third object of the present invention is to provide a steel strip cold rolling mill outlet guide device that can detect straightness online.

[0009] A fourth object of the present invention is to provide a steel strip cold rolling mill exit guide device that can avoid scratching the steel strip.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] A steel strip cold rolling mill exit guide device, comprising a fixed mounting seat, on which a first jaw and a second jaw are sequentially mounted, the first jaw comprising two first jaw seats arranged opposite to each other, a first guide plate and a first guide wheel arranged on the first jaw seats, the first guide plate being respectively arranged at the upper and lower ends of the opposite surfaces of the two first jaw seats, the first guide wheel being rotatably mounted on the first jaw seats, and at least two first guide wheels being sequentially mounted on each of the first jaw seats, the outer arc surface of the first guide wheel forming a first steel strip moving side boundary, the first steel strip moving side boundaries formed on the two first jaw seats and the first guide plate forming a first steel strip moving channel; the structure of the second jaw is the same as that of the first jaw, the first steel strip moving channel coincides with the center line of the second steel strip moving channel formed in the second jaw, and the first steel strip moving side boundary of the first jaw coincides with the second steel strip moving side boundary defined by the second guide wheel of the second jaw.

[0012] In this way, when the steel strip passes through the first steel strip moving channel and the second steel strip moving channel, the two-point-one-line principle can be used to straighten the steel strip, that is, the first steel strip moving side boundary of the first jaw coincides with the second steel strip moving side boundary defined by the second guide wheel of the second jaw.

[0013] Preferably, a leveling mechanism is installed between the first jaw and the second jaw, the leveling mechanism includes at least two lower wheel groups for supporting the steel belt, at least two upper wheel groups for pressing the steel belt, and a telescopic cylinder for driving the upper wheel group, the lower wheel group and the upper wheel group are respectively arranged front and back along the moving direction of the steel belt, the lower wheel group includes at least two lower rollers arranged in parallel, the upper wheel group includes at least one upper roller, the upper roller is arranged above the lower roller, and the upper roller and the lower roller are staggered, the telescopic rod of the telescopic cylinder is connected to the upper wheel group, a steel belt moving gap is left between the upper roller and the lower roller, the steel belt moving channel of the first jaw, the steel belt moving gap and the steel belt moving channel of the second jaw are connected to form a steel belt moving passage. In this way, when the steel strip passes through the steel strip moving gap between the upper roller and the lower roller, when the telescopic cylinder is extended, the upper roller can press the steel strip downward and the lower roller can press the steel strip upward, so that the Bauschinger effect can be used to level the steel strip just rolled.

[0014] Preferably, the lower wheel assembly is mounted on a lower wheel seat, the upper wheel assembly is mounted on an upper wheel seat, the upper wheel seat is slidably mounted in the lower wheel seat, and the upper wheel seat is connected to the telescopic rod of the telescopic cylinder, so that by telescoping the telescopic rod of the telescopic cylinder, not only the width of the moving gap of the steel belt can be adjusted, but also the pressure of the upper roller of the upper wheel assembly on the steel belt can be adjusted.

[0015] Preferably, a guide mechanism is arranged between the lower wheel seat and the upper wheel seat, and the guide mechanism includes a locking nut installed on the lower wheel seat, a guide screw fixedly connected to the upper wheel seat, and the guide screw passes through the lower wheel seat and is threadedly connected to the locking nut to guide the movement of the upper wheel seat so that it moves smoothly.

[0016] Preferably, a straightness measuring device is arranged below the leveling mechanism, and the straightness measuring device includes a digital micrometer, the probe of the digital micrometer is pressed against one side of the midpoint of the steel belt between the two lower wheel groups, and the communication port of the digital micrometer is connected to the display terminal to facilitate online measurement of the straightness of the steel belt and real-time display output.

[0017] Preferably, the digital micrometer is mounted on a mounting seat, and the mounting seat is slidably mounted on a third guide rail arranged perpendicular to the steel belt moving path, so as to facilitate the corresponding movement of the digital micrometer according to steel belts of different specifications, so that its measuring head always presses against the midpoint side of the steel belt between the two lower wheel groups.

[0018] Preferably, it also includes a sliding mounting seat, which is slidably mounted on the fixed mounting seat via a guide rail arranged along the steel strip moving channel, so that the guide device of the present invention can extend into the interior of the cold rolling mill and be as close to the rolling roller as possible.

[0019] Preferably, the first jaw also includes a first guide rail arranged perpendicular to the steel strip moving channel, two first jaw seats are slidably mounted on the first guide rail, and the two first jaw seats are connected by a first adjusting screw so that the width of the first jaw can be adaptively adjusted according to the width of the steel strip.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The present invention provides a sliding mounting seat on the fixed mounting seat, so that the cold-rolled steel strip outlet guide device of the present invention can extend into the interior of the cold rolling mill and be as close to the rolling roller as possible;

[0022] 2) Separate adjustment screws are provided on both sides of the first and second jaws of the present invention to meet the guiding needs of different rolling positions and products of different rolling specifications. In addition, the present invention can also adjust the width of the first and second jaws, that is, adjust the position of the guide wheels on both sides of the first and second jaws, so that the first steel strip moving side boundary formed by the guide wheels on both sides of the first jaw coincides with the second steel strip moving side boundary formed by the guide wheels on both sides of the second jaw, thereby achieving the purpose of straightening the steel strip.

[0023] 3) In the first and second jaws of the present invention, guide plates are respectively arranged on the upper surface and the lower surface of the steel strip, ensuring that the steel strip will not twist when passing through, and the steel strip straightening function can be achieved through the first and second jaws arranged front and back.

[0024] 4) The present invention is provided with a leveling mechanism, which can realize the function of steel belt leveling by means of at least two sets of rollers of the upper wheel group and the lower wheel group that are staggered from each other and in combination with the pressure exerted on the upper wheel group by the telescopic cylinder.

[0025] 5) The present invention is provided with a straightness measuring device, which can monitor the straightness of the rolled product in real time and make timely adjustments accordingly.

[0026] 6) The present invention adopts guide wheels to form the side limits of the steel belt moving channel. When the steel belt moves, rolling friction is generated between the guide wheels and the steel belt, which can effectively avoid scratching the steel belt.

[0027] 7) After a year-long test, it was found that the present invention has a significant effect on improving the straightness of the product, and the present invention has no wearing parts and can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1 An embodiment of the steel strip cold rolling mill outlet guide device of the present invention includes a fixed mounting seat 1, a sliding adjustment seat 2, a first jaw 3, a straightness measuring device 4, a leveling mechanism 5, and a second jaw 6.

[0034] The fixed mounting seat 1 is fixedly mounted at the exit of the cold rolling mill, and the sliding mounting seat 2 is slidably mounted on the fixed mounting seat 1 through a guide rail and a slider arranged along the moving direction of the steel strip, and a locking structure (the locking structure is a prior art) is arranged between the fixed mounting seat 1 and the sliding mounting seat 2 at a suitable position. In this way, the sliding mounting seat 2 can slide on the fixed mounting seat 1 along the moving direction of the steel strip, and be locked by the locking structure after sliding to a suitable position as required.

[0035] The first jaw 3 is mounted at the front end of the fixed mounting seat 1. The first jaw 3 includes a first guide rail 31 arranged perpendicular to the moving direction of the steel belt, two first jaw seats 33 slidably mounted on the first guide rail 31, a first guide plate 32 and a first guide wheel 34 fixedly mounted on the first jaw seats 33, and a first adjusting screw 35 connecting the two first jaw seats 33, wherein the two first jaw seats 33 are arranged opposite to each other, the first guide plate 32 is respectively arranged on the upper and lower parts of the opposite surfaces of the two first jaw seats 33, a steel belt gap is left between the two first guide plates 32 on each first jaw seat 33, at least two first guide wheels 34 are sequentially rotatably mounted on each first jaw seat 33, the outer arc surface of each first guide wheel 34 forms the first steel belt moving side boundary, and the first guide wheels 34 (first steel belt moving side boundary) and the first guide plates 32 on the two first jaw seats 33 are surrounded to form a square first steel belt moving channel 36. The distance between the two first jaw seats 33 can be adjusted by rotating the first adjusting screw 35, that is, the position of the moving side boundary of the first steel strip can be adjusted, and the width of the steel strip gap can be adjusted by replacing the first guide plates 32 of different heights, so as to adapt to the use of steel strips of different specifications. The first guide plates 32 are preferably made of wear-resistant copper plates.

[0036] The second jaw 6 is mounted at the rear end of the fixed mounting seat 1. The second jaw 6 comprises a second guide rail 61 arranged perpendicular to the moving direction of the steel belt, two second jaw seats 63 slidably mounted on the second guide rail 61, a second guide plate 62 and a second guide wheel 64 fixedly mounted on the second jaw seat 63, and a second adjusting screw 65 connecting the two second jaw seats 63, wherein the two second jaw seats 63 are arranged opposite to each other, the second guide plate 62 is respectively arranged on the upper and lower parts of the opposite surfaces of the two second jaw seats 63, a steel belt gap is left between the two second guide plates 62 on each second jaw seat 63, at least two second guide wheels 64 are sequentially rotatably mounted on each second jaw seat 63, the outer arc surface of each second guide wheel 64 forms the second steel belt moving side boundary, and the second guide wheels 64 (second steel belt moving side boundary) and the second guide plates 62 on the two second jaw seats 63 are surrounded to form a second steel belt moving channel 66. The distance between the two second jaw seats 63 can be adjusted by rotating the second adjusting screw 65, that is, the position of the moving side boundary of the second steel strip can be adjusted, and the width of the steel strip gap can be adjusted by replacing the second guide plates 62 of different heights, so as to adapt to the use of steel strips of different specifications. The second guide plates 62 are preferably made of wear-resistant copper plates.

[0037] The center lines of the first steel belt moving channel 36 in the first jaw 3 and the second steel belt moving channel 66 formed in the second jaw 6 coincide with each other, and the first steel belt moving side boundary defined by the outer diameter of the first guide wheel 34 of the first jaw 3 coincides with the second steel belt moving side boundary defined by the second guide wheel 64 of the second jaw 6. The positions of the first and second steel belt moving side boundaries can be adjusted by rotating the first adjusting screw 35 and the second adjusting screw 65 so that the two coincide with each other, thereby achieving the purpose of straightening the steel belt.

[0038] A leveling mechanism 5 is installed between the first jaw 3 and the second jaw 6. The leveling mechanism 5 includes at least two lower wheel groups 51 for supporting the steel strip 7, at least two upper wheel groups 52 for pressing the steel strip 7, and a telescopic cylinder 54 for driving the upper wheel group 52. The lower wheel group 51 and the upper wheel group 52 are respectively arranged front and back along the moving direction of the steel strip, and the upper wheel group 52 is arranged above the upper wheel group 51, and a steel strip moving gap 57 is left between the upper wheel group 52 and the lower wheel group 51. The lower wheel group 51 includes at least two lower rollers arranged horizontally in parallel, and the upper wheel group 52 includes at least one upper roller installed horizontally, and the upper roller is arranged above the lower roller, and the upper roller is staggered with the lower roller. The telescopic rod of the telescopic cylinder 54 is connected to the upper wheel group 52, so as to facilitate the leveling of the steel strip just rolled out by using the Bauschinger effect.

[0039] The first steel strip moving channel 36 of the first jaw 3, the steel strip moving gap 57 and the second steel strip moving channel 66 of the second jaw 6 are connected to form a steel strip moving passage.

[0040] The leveling mechanism 5 further includes a lower wheel seat 56 for installing the lower wheel set 51 and an upper wheel seat 55 for installing the upper wheel set 52. The upper wheel seat 55 is slidably installed in the lower wheel seat 56, and the upper wheel seat 55 is connected to the telescopic rod of the telescopic cylinder 54 installed on the top of the lower wheel seat 56. The installation height of the upper wheel set 52 can be adjusted by telescoping the telescopic rod of the telescopic cylinder 54, thereby adjusting the height of the steel belt moving gap 57 to adapt to the use of steel belts of different specifications. At the same time, on the basis of the staggered arrangement of the rollers of the upper wheel set 52 and the rollers of the lower wheel set 51, the telescopic rod of the telescopic cylinder 54 can be used to adjust the pressure of the upper wheel set 52 on the steel belt 7, thereby leveling the steel belt just rolled out through the Bauschinger effect. The telescopic cylinder 54 is preferably a cylinder.

[0041] In order to ensure the smooth movement of the upper wheel seat 55, a guide mechanism 53 is arranged between the lower wheel seat 56 and the upper wheel seat 55, and the guide mechanism 53 includes a locking nut 531 installed on the lower wheel seat 56, and a guide screw 532 fixedly connected to the upper wheel seat 55, and the guide screw 532 passes through the lower wheel seat 56 and is threadedly connected to the locking nut 531. When the upper wheel seat 55 needs to be moved, the locking nut 531 is first removed, and then the telescopic cylinder 54 moves with the upper wheel seat 55. During the movement, the guide screw 532 is connected and guided with the lower wheel seat 56. After moving into position, the guide screw 532 is locked by the locking nut 531, and the upper wheel seat 55 can be positioned.

[0042] A straightness measuring device 4 is provided at the lower center of the leveling mechanism 5. The straightness measuring device 4 comprises a third guide rail 41 arranged perpendicular to the moving direction of the steel belt, a mounting seat 42 slidably mounted on the third guide rail 41, a digital dial gauge 43 and a probe 44 mounted on the mounting seat 42, the probe of the digital dial gauge 43 is pressed against one side of the midpoint of the steel belt between the two lower wheel assemblies 51, and the communication port of the digital dial gauge 43 is connected to a display terminal to timely feedback the straightness data. The display terminal can be a computer.

[0043] When the steel strip cold rolling mill outlet guide device of the present invention is used, the steel strip 7 flowing out of the steel strip cold rolling mill enters the steel strip moving passage formed on the first jaw 3, the leveling mechanism 5 and the second jaw 6 of the present invention in sequence. In this process, the first guide wheels 34 on both sides of the first steel strip moving passage 36 of the first jaw 3 clamp the two sides of the steel strip, and the first guide plates 32 on both sides of the first steel strip moving passage 36 clamp the upper and lower surfaces of the steel strip to limit the possible twisting of the steel strip; similarly, the second guide wheels 64 on both sides of the second steel strip moving passage 66 of the second jaw 6 clamp the two sides of the steel strip, and the second guide plates 62 on both sides of the second steel strip moving passage 66 limit the possible twisting of the steel strip. In this way, when the steel strip 7 passes through the guide device of the present invention, the first steel strip moving side boundary defined by the two first guide wheels 34 on the same side of the first jaw 3 and the second steel strip moving side boundary defined by the two second guide wheels 64 on the same side of the second jaw 6 coincide with each other, so the function of straightening the steel strip can be realized.

[0044] When the steel strip 7 passes through the leveling mechanism 5 of the present invention, the rollers of the upper wheel set 52 and the rollers of the lower wheel set 51 are arranged in a staggered manner, and the pressure applied by the upper wheel set 52 on the steel strip 7 is adjusted by the telescopic rod of the telescopic cylinder 54, so that the steel strip 7 just rolled can be leveled through the Bauschinger effect. When the steel strip 7 is leveled, the probe 44 of the digital micrometer 43 is pressed on one side of the steel strip 7, and when the steel strip 7 passes between the first jaw 3 and the second jaw 6, the bending value of the middle point of the steel strip relative to the first jaw and the second jaw at each instant is measured, which is used to calculate the straightness of a section of steel strip, thereby realizing online and instant measurement of the straightness of the steel strip, and facilitating timely judgment of whether the rolled product meets the straightness requirements.

[0045] The above is only a specific implementation scheme of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art can make many possible changes and modifications to the technical scheme of the present invention by using the technical content disclosed above without departing from the scope of the technical scheme of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical scheme of the present invention should fall within the protection scope of the technical scheme of the present invention.

Claims

1. A steel strip cold rolling mill outlet guide device, comprising a fixed mounting seat, characterized in that: The first jaw and the second jaw are sequentially installed on the fixed mounting seat, the first jaw comprising two oppositely arranged first jaw seats, a first guide plate and a first guide wheel arranged on the first jaw seats, the first guide plate being respectively arranged at the upper and lower ends of the opposite surfaces of the two first jaw seats, the first guide wheel being rotatably installed on the first jaw seats, and at least two first guide wheels being sequentially installed on each of the first jaw seats, the outer arc surface of the first guide wheel forming a first steel belt moving side boundary, the first steel belt moving side boundaries formed on the two first jaw seats and the first guide plate forming a first steel belt moving channel; the structure of the second jaw is the same as that of the first jaw, the first steel belt moving channel coincides with the center line of the second steel belt moving channel formed in the second jaw, and the first steel belt moving side boundary of the first jaw coincides with the second steel belt moving side boundary defined by the second guide wheel of the second jaw.

2. The steel strip cold rolling mill outlet guide device according to claim 1, characterized in that: A leveling mechanism is installed between the first jaw and the second jaw, and the leveling mechanism includes at least two lower wheel groups for supporting the steel belt, at least two upper wheel groups for pressing the steel belt, and a telescopic cylinder for driving the upper wheel group. The lower wheel group and the upper wheel group are respectively arranged front and back along the moving direction of the steel belt, the lower wheel group includes at least two upper rollers arranged in parallel, the upper wheel group includes at least one lower roller, the upper roller is arranged above the lower roller, and the upper roller and the lower roller are staggered. The telescopic rod of the telescopic cylinder is connected to the upper wheel group, and a steel belt moving gap is left between the upper roller and the lower roller. The steel belt moving channel of the first jaw, the steel belt moving gap and the steel belt moving channel of the second jaw are connected to form a steel belt moving passage.

3. The steel strip cold rolling mill outlet guide device according to claim 2, characterized in that: The lower wheel assembly is mounted on the lower wheel seat, the upper wheel assembly is mounted on the upper wheel seat, the upper wheel seat is slidably mounted in the lower wheel seat, and the upper wheel seat is connected to the telescopic rod of the telescopic cylinder.

4. The steel strip cold rolling mill outlet guide device according to claim 3, characterized in that: A guide mechanism is arranged between the lower wheel seat and the upper wheel seat, and the guide mechanism comprises a locking nut mounted on the lower wheel seat, a guide screw fixedly connected to the upper wheel seat, and the guide screw passes through the lower wheel seat and is threadedly connected to the locking nut.

5. The steel strip cold rolling mill outlet guide device according to claim 2, characterized in that: A straightness measuring device is arranged below the leveling mechanism, and the straightness measuring device comprises a digital micrometer, the probe of the digital micrometer is pressed against one side of the midpoint of the steel belt between the two lower wheel groups, and the communication port of the digital micrometer is connected to the display terminal.

6. The steel strip cold rolling mill outlet guide device according to claim 5, characterized in that: The digital micrometer is mounted on a mounting seat, and the mounting seat is slidably mounted on a third guide rail arranged perpendicular to the steel belt moving passage.

7. The steel strip cold rolling mill outlet guide device according to claim 1, characterized in that: It also includes a sliding mounting seat, which is slidably mounted on the fixed mounting seat via a guide rail arranged along the steel belt moving channel.

8. The steel strip cold rolling mill outlet guide device according to claim 7, characterized in that: The first jaw also includes a vertical A first guide rail is arranged perpendicular to the steel belt moving channel, and two first jaw seats are slidably mounted on the first guide rail. And the two first jaw seats are connected by a first adjusting screw.

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