Device for reducing strip damage at the entry of a recoiling train and recoiling train

Abstract

The application discloses a device for reducing scratch of strip steel at the entrance of a recoiling unit and the recoiling unit. The device comprises a rotating shaft, the two ends of the rotating shaft are rotatably connected with the structure of the recoiling unit; a guide plate mechanism, the first end of the guide plate mechanism is movable up and down around the rotating shaft; a guide roller mechanism, the guide roller mechanism is arranged at the first end of the guide plate mechanism; a power mechanism, the power mechanism is connected with the guide plate mechanism; and a control mechanism, the control mechanism is connected with the power mechanism. The device for reducing scratch of strip steel at the entrance of the recoiling unit and the recoiling unit provided by the application solve the problem that the entrance strip steel is scratched when being in contact with the entrance strip guiding plate without tension.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel rolling auxiliary equipment, and particularly relates to a device for reducing scratch of entry strip of a recoiling unit and the recoiling unit. BACKGROUND

[0002] The entry strip of the recoiling unit is scratched when it is contacted with the guide plate in the state of no tension because the tension is not established when the strip is threading and tailing, and the installation position and the matching relationship of the threading guide plate and the guide roller of the guide plate directly affect the threading effect and the scratch defect. The device sets the guide roller at the root of the swinging guide plate of the entry, the guide plate is swung up to complete the threading, the strip passes through the guide plate, the guide plate is swung down, the guide plate is completely separated from the strip, the guide roller at the root of the guide plate is just supported on the strip because of the position of the rotating shaft, the guide roller rotates with the strip to avoid the scratch defect.

[0003] However, the inventors of the present application found at least the following technical problems in the process of implementing the technical solutions of the embodiments of the present application: the entry strip is easily contacted with the entry threading guide plate to cause scratch in the state of no tension. SUMMARY

[0004] The present application aims to at least solve the technical problem that the entry strip is contacted with the entry threading guide plate to cause scratch in the state of no tension. To this end, the present application provides a device for reducing scratch of entry strip of a recoiling unit and the recoiling unit.

[0005] The technical solutions of the present application are as follows:

[0006] One aspect of the present application provides a device for reducing scratch of entry strip of a recoiling unit, which comprises:

[0007] a rotating shaft, both ends of which are rotatably connected with the structure of the recoiling unit;

[0008] a guide plate mechanism, a first end of which is movable up and down around the rotating shaft;

[0009] a guide roller mechanism, which is arranged at the first end of the guide plate mechanism;

[0010] a power mechanism, which is connected with the guide plate mechanism;

[0011] a control mechanism, which is connected with the power mechanism.

[0012] Further, the guide plate mechanism comprises:

[0013] The intermediate guide plate is provided with a fixed bottom plate, and the intermediate guide plate is arranged in the middle of the fixed bottom plate. The first end of the intermediate guide plate is provided with a movable guide plate, and the movable guide plate is in sliding connection with the intermediate guide plate. The end of the movable guide plate is provided with a material receiving guide plate head. The first end of the fixed bottom plate is arranged opposite to the first end of the intermediate guide plate.

[0014] Two side guide plates are fixedly arranged on the fixed bottom plate and located on both sides of the intermediate guide plate. The first end of the side guide plate is provided with a rotating shaft hole, and the rotating shaft is inserted into the rotating shaft hole. The first end of the side guide plate is connected with the fixed bottom plate, and the first end of the side guide plate is connected with the fixed bottom plate.

[0015] The outer side of the two side guide plates is provided with a safety pin hole, and the safety pin hole is connected with the safety pin seat on the structure of the rewinding machine group. Further, the guide roller mechanism comprises:

[0016] At least two guide roller supports are symmetrically arranged in the two cavities of the two side guide plates.

[0017] Two guide rollers are arranged on the guide roller supports respectively.

[0018] Further, the guide roller is fixed on the guide roller support through the pressing plate and the pressing plate bolt.

[0019] A plurality of horizontal adjusting shims are arranged between the guide roller and the guide roller support in the horizontal direction. The horizontal position of the guide roller can be adjusted by adjusting the number and position of the horizontal adjusting shims. The adjustment range of the horizontal position is controlled within ±2mm.

[0020] A plurality of height adjusting shims are arranged between the guide roller and the guide roller support in the longitudinal direction. The height of the guide roller can be adjusted by adjusting the number and position of the height adjusting shims. The adjustment range of the height is controlled within 0-3mm.

[0021] Further, the power mechanism comprises:

[0022] The extension oil cylinder fixed support is fixedly arranged at the bottom of the end of the movable guide plate.

[0023] The extension oil cylinder middle support is fixedly arranged at the bottom of the fixed bottom plate.

[0024] The intermediate guide plate extension oil cylinder is connected with the extension oil cylinder fixed support at one end and connected with the extension oil cylinder middle support at the other end.

[0025] A guide plate swing oil cylinder lifting support is fixedly arranged at the bottom of the fixed bottom plate;

[0026] A guide plate swing oil cylinder fixed support is fixedly arranged on the structure of the recoiling unit;

[0027] A guide plate swing oil cylinder is fixedly connected at one end to the guide plate swing oil cylinder fixed support and at the other end to the guide plate swing oil cylinder lifting support;

[0028] The intermediate guide plate extension oil cylinder and the guide plate swing oil cylinder are connected to the control mechanism.

[0029] Further, the surface of the guide roller is made of soft material, and the surface hardness is Shore A 85±5;

[0030] The diameter of the guide roller is controlled to be 60-80 mm;

[0031] The opening width of the cavity is greater than the diameter of the guide roller by 5-10 mm.

[0032] Further, when the intermediate guide plate falls to the lowest point, the center point of the guide roller coincides with the vertical line of the center point of the rotating shaft.

[0033] Further, when the intermediate guide plate is lifted to the highest point, the roller surface height of the guide roller is not lower than the upper surface height of the intermediate guide plate.

[0034] Further, when the intermediate guide plate falls to the lowest point, the roller surface of the guide roller should be higher than the top surface of the rotating shaft by 3-10 mm.

[0035] Another aspect of the present application provides a recoiling unit, which comprises the device for reducing scratch of the inlet strip steel of the recoiling unit according to any one of the above.

[0036] The present application has at least the following beneficial effects:

[0037] The device for reducing scratch of the inlet strip steel of the recoiling unit and the recoiling unit provided by the present application can solve the problem that the inlet strip steel is scratched when contacting the inlet strip guide plate under no tension, by arranging the guide roller mechanism at the first end of the guide plate mechanism, and when the guide plate mechanism is worn out, the guide roller mechanism at the first end of the guide plate mechanism is naturally exposed, and when the strip steel loses tension and falls down, it will be caught by the guide roller mechanism, and the guide roller mechanism can rotate with the strip steel to avoid scratch defects. BRIEF DESCRIPTION OF DRAWINGS

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a front view of the structure of the device for reducing strip scratches at the rewinding mill in this embodiment of the application;

[0040] Figure 2 for Figure 1 Side view of the structure shown;

[0041] Figure 3 for Figure 1 A schematic diagram of the working state of the structure shown;

[0042] Figure 4 for Figure 1 A schematic diagram of the guide roller mechanism shown in the diagram;

[0043] Figure 5 This is a schematic diagram of the guide plate mechanism in the embodiment of this application when it swings upwards;

[0044] Figure 6 This is a schematic diagram of the guide plate mechanism in the embodiment of this application when it is lowered.

[0045] Figure label:

[0046] 1-Rotating shaft; 2-Intermediate guide plate; 3-Side guide plate; 4-Rotating shaft hole; 5-Receiving guide plate head; 6-Guide roller bracket; 7-Guide roller; 8-Pressure plate; 9-Pressure plate bolt; 10-Horizontal adjustment shim; 11-Height adjustment shim; 12-Extension cylinder fixing support; 13-Extension cylinder intermediate support; 14-Intermediate guide plate extension cylinder; 15-Guide plate swing cylinder lifting support; 16-Guide plate swing cylinder fixing support; 17-Guide plate swing cylinder; 18-Safety pin hole; 19-Steel coil; A-Device to reduce scratches on the strip at the rewinding unit inlet. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] Furthermore, reference numerals and / or letters can be repeated in different instances in this application, such repetition is for simplification and clarity purposes and does not itself dictate a relationship between and / or among the various embodiments and / or arrangements discussed. Moreover, various specific process and material examples are provided in this application, but one of ordinary skill in the art will recognize that other processes can be applied and / or other materials can be used.

[0049] The application will be described below in connection with the drawings and specific embodiments:

[0050] Figure 1 , Figure 2 , Figure 3 A device for reducing the scratch of the strip steel at the entrance of the recoiling unit is provided in the embodiment of the application, which is combined with Figure 1 The device comprises a rotating shaft 1, a guide plate mechanism, a guide roller 7 mechanism, a power mechanism and a control mechanism. The rotating shaft 1 is rotatably connected to the structure of the recoiling unit at both ends. The first end of the guide plate mechanism is movable up and down around the rotating shaft 1. The guide roller 7 mechanism is arranged at the first end of the guide plate mechanism. The power mechanism is connected to the guide plate mechanism. The control mechanism is connected to the power mechanism.

[0051] In the embodiment of the application, the guide plate mechanism comprises a middle guide plate 2 and two side guide plates 3.

[0052] The middle guide plate 2 is arranged in the middle of the fixed base plate. The first end of the middle guide plate 2 is provided with a movable guide plate (not shown in the figure). The movable guide plate is slidably connected to the middle guide plate 2. The end of the movable guide plate is provided with a material receiving guide plate head 5. The first end of the fixed base plate is arranged opposite to the first end of the middle guide plate 2.

[0053] The two side guide plates 3 are fixedly arranged on the fixed base plate and located at the two sides of the middle guide plate 2. The first end of the side guide plate 3 is provided with a rotating shaft hole 4. The rotating shaft 1 is inserted into the rotating shaft hole 4. The first end of the side guide plate 3 is provided with a cavity. In order to ensure that the size of the cavity can meet the placement of the guide roller support 6, the opening width of the cavity should be greater than the diameter of the guide roller 7 by 5mm-10mm, usually 5mm, mainly to ensure that the guide roller 7 has enough space to rotate.

[0054] In the embodiment of the application, the guide roller 7 mechanism is combined with Figure 4 As shown in the figure, the guide roller 7 mechanism comprises at least two guide roller supports 6 and two guide rollers 7. The at least two guide roller supports 6 are symmetrically arranged in the two cavities of the two side guide plates 3. The two guide rollers 7 are arranged on the guide roller supports 6 respectively.

[0055] Specifically, the guide roller 7 is too small in diameter, low in strength, easy to be damaged, and difficult to control the height of the roller surface. If the diameter of the guide roller 7 is too large, the guide roller 7 is difficult to be placed into the cavity of the side guide plate 3. In order to facilitate construction and application, the diameter of the guide roller 7 is controlled to be 60mm-80mm, preferably 60mm. The appropriate diameter of the guide roller 7 can be better dragged and rotated by the strip steel, and no scratch is generated. The surface of the guide roller 7 is made of soft material, and the surface hardness is Shore A 85±5. The surface hardness can meet the wear resistance and durability of the roller surface, and the roller surface is not scratched. Through the setting of the diameter of the guide roller 7 and the surface material of the guide roller 7, the rotation and durability of the roller body are better guaranteed, and the quality of the strip steel is guaranteed.

[0056] In the embodiment of the present application, the guide roller 7 is fixed on the guide roller support 6 through the pressing plate 8 and the pressing plate bolt 9. A plurality of horizontal adjusting shims 10 are arranged between the guide roller 7 and the guide roller support 6 in the horizontal direction. The horizontal position of the guide roller 7 can be adjusted by adjusting the number and position of the horizontal adjusting shims 10, and the adjustment range is controlled to be ±2mm. A plurality of height adjusting shims 11 are arranged between the guide roller 7 and the guide roller support 6 in the longitudinal direction. The height of the guide roller 7 can be adjusted by adjusting the number and position of the height adjusting shims 11, and the adjustment range of the height is controlled to be 0-3mm. Through the adjustment of the horizontal position and the height of the guide roller 7, the guide roller 7 can better adapt to the height requirement of the roller system of the unit, and better meet the requirement that the strip steel is not scratched in the tension-free state.

[0057] In the embodiment of the present application, the power mechanism includes an extension oil cylinder fixed support 12, an extension oil cylinder middle support 13, a middle guide plate extension oil cylinder 14, a guide plate swing oil cylinder lifting support 15, a guide plate swing oil cylinder fixed support 16, and a guide plate swing oil cylinder 17. The middle guide plate extension oil cylinder 14 and the guide plate swing oil cylinder 17 are connected with the control mechanism.

[0058] The extension oil cylinder fixed support 12 is fixedly arranged at the bottom of the end of the movable guide plate. The extension oil cylinder middle support 13 is fixedly arranged at the bottom of the fixed bottom plate. One end of the middle guide plate extension oil cylinder 14 is connected with the extension oil cylinder fixed support 12, and the other end is fixedly connected with the extension oil cylinder middle support 13. The control mechanism controls the middle guide plate extension oil cylinder 14 to drive the movable guide plate to slide at the first end of the middle guide plate 2, so as to realize the adjustment of the extension distance of the middle guide plate 2.

[0059] The guide plate swing oil cylinder lifting support 15 is fixedly arranged at the bottom of the fixed bottom plate. The guide plate swing oil cylinder fixed support 16 is fixedly arranged on the structure of the recoiling unit. One end of the guide plate swing oil cylinder 17 is fixedly connected with the guide plate swing oil cylinder fixed support 16, and the other end is fixedly connected with the guide plate swing oil cylinder lifting support 15. The control mechanism controls the guide plate swing oil cylinder 17 to drive the fixed bottom plate to swing up and down, so as to realize the height adjustment of the middle guide plate 2.

[0060] Furthermore, in this embodiment, each of the two side guide plates 3 is provided with a safety pin hole 18 on its outer side. The safety pin hole 18 is connected to the safety pin seat on the rewinding unit structure. When the device for reducing the scratches on the strip at the rewinding unit inlet stops operating or is under maintenance, the safety pin is fixed by inserting it into the safety pin hole 18 and the safety pin seat to ensure the normal construction and safety of the on-site personnel.

[0061] In the embodiments of this application, combined with Figure 5 , Figure 6 As shown, the device A for reducing strip scratches at the rewinding unit entrance is located on one side of the steel coil 19. When the rewinding unit is ready to thread the strip, the control mechanism controls the guide plate swing cylinder 17 to drive the intermediate guide plate to swing upward along the rotating shaft 1 to the highest point. After the intermediate guide plate has finished threading the strip, the control mechanism controls the guide plate swing cylinder 17 to drive the intermediate guide plate to swing downward to the lowest point. At this time, the guide roller 7 in the cavity at the root of the side guide plate 3 is naturally exposed and supports the strip. When the strip loses tension and hangs down, it is caught by the guide roller 7. The guide roller 7 can rotate with the strip to avoid relative movement between the strip and the guide roller 7, which would cause scratches.

[0062] In this embodiment, when the intermediate guide plate 2 falls to its lowest point, the center point of the guide roller 7 coincides with the vertical line of the center point of the rotating shaft 1, so that the guide roller 7 and the intermediate guide plate 2 fit tightly. When the intermediate guide plate 2 is swung down, the center point of the guide roller 7 coincides with the vertical line of the center of the rotating shaft 1, so that the guide roller 7 is at the highest position of the entire intermediate guide plate 2, and the guide roller 7 can better support the strip steel.

[0063] In this embodiment, when the intermediate guide plate 2 is raised to its highest height, the height of the roller surface of the guide roller 7 is not lower than the height of the upper surface of the intermediate guide plate 2, which can prevent the strip from scratching the edge of the intermediate guide plate 2 during the threading process and solve the problem that the edge of the intermediate guide plate 2 is prone to scratching the strip.

[0064] In this embodiment, when the intermediate guide plate 2 falls to its lowest point, the roller surface of the guide roller 7 should be 3-10mm higher than the top surface of the rotating shaft 1. A preferred value is 5mm. This prevents the roller surface from being too high, causing the strip head to collide with the roller during threading, and prevents the roller surface from being too low, resulting in insufficient support distance for the strip and easy scraping of the guide plate, causing scratches. This ensures both good strip throughput and prevents scratches on the strip.

[0065] When using the device for reducing strip scratches at the rewinding unit inlet provided in this application embodiment for strip threading, during the strip threading process, the control mechanism controls the guide plate swing cylinder 17 to extend. The guide plate swing cylinder 17 drives the fixed base plate to move through the guide plate swing cylinder lifting support 15, so that the side guide plate 33 and the middle guide plate 2 rotate around the rotating axis 1, and the side guide plate 3 and the middle guide plate 2 rise and swing upward.

[0066] The control mechanism controls the intermediate guide plate extension oil cylinder 14 to extend, the guide plate extension oil cylinder drives the intermediate guide plate 2 to extend through the extension oil cylinder fixing support 12, the material receiving guide plate head 5 lifts the head of the strip, and the strip runs along the intermediate guide plate 2 to be threaded. The strip runs to the guide roller 7, and the guide roller 7 supports the strip. At this time, the height of the guide roller 7 is completed by increasing or decreasing the intermediate adjusting gasket, and the horizontal position of the guide roller 7 is completed by increasing or decreasing the horizontal adjusting gasket 10. After the strip passes through the guide roller 7, the intermediate guide plate extension oil cylinder 14 is retracted, the guide plate swing oil cylinder 17 is retracted, and the intermediate guide plate 2 falls down. At this time, the guide roller 7 supports the strip, and the threading process is completed.

[0067] In the embodiment of the present application, it should be noted that when the intermediate guide plate 2 is in the lifting state and threading, the head of the strip passes through the intermediate guide plate 2 to reach the guide roller 7. Since the guide roller 7 is 5 mm higher, the small height of the guide roller 7 makes the head of the strip easily pass through the guide roller 7, avoiding the problem of strip clamping caused by the head of the strip hitting the guide roller 7. When the strip passes through the guide roller 7, since the guide roller 7 is higher than the intermediate guide plate 2, the guide roller 7 naturally supports the strip and can rotate with the strip during the running of the strip, avoiding the contact of the lower surface of the strip with the intermediate guide plate 2 to cause the scratch of the strip.

[0068] Embodiment two

[0069] The embodiment of the present application provides a recoiling unit, and the recoiling unit comprises the device for reducing the scratch of the strip at the inlet of the recoiling unit.

[0070] The embodiment of the present application at least has the following beneficial effects:

[0071] The device for reducing the scratch of the strip at the inlet of the recoiling unit and the recoiling unit provided by the present application can solve the problem that the inlet strip is scratched when contacting the inlet threading guide plate under the condition that there is no tension. The guide roller mechanism is arranged at the first end of the guide plate mechanism. When the guide plate mechanism finishes threading, the guide plate mechanism is swung down. At this time, the guide roller mechanism at the first end of the guide plate mechanism is naturally exposed. When the strip loses tension and falls down, the strip is caught by the guide roller mechanism. The guide roller mechanism can rotate with the strip, avoiding the scratch defect, and effectively improving the product quality and production efficiency.

[0072] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0073] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0074] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0075] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0077] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0078] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0079] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, the scope of the present application is defined by the claims and their equivalents.

Claims

1. An apparatus for reducing entry strip damage in a recoiling train, characterized by, The device comprises: a rotating shaft, both ends of which are rotatably connected with the structure of the recoiling unit; a guide plate mechanism, a first end of which is movable up and down around the rotating shaft; a guide roller mechanism, which is arranged at the first end of the guide plate mechanism; a power mechanism, which is connected with the guide plate mechanism; a control mechanism, which is connected with the power mechanism; an intermediate guide plate, a bottom of which is provided with a fixed bottom plate, the intermediate guide plate is arranged at the middle of the fixed bottom plate, a first end of the intermediate guide plate is provided with a movable guide plate, the movable guide plate is slidably connected with the intermediate guide plate, an end of the movable guide plate is provided with a material receiving guide plate head, a first end of the fixed bottom plate is oppositely arranged with the first end of the intermediate guide plate; two side guide plates, which are fixedly arranged on the fixed bottom plate and located at both sides of the intermediate guide plate, a first end of each side guide plate is provided with a rotating shaft hole, the rotating shaft is inserted into the rotating shaft hole, each side guide plate is provided with a cavity at a position where the side guide plate is connected with the first end of the fixed bottom plate; a safety pin hole is arranged on the outside of each side guide plate, the safety pin hole is connected with a safety pin seat on the structure of the recoiling unit; at least two guide roller supports, which are symmetrically arranged in the cavities of the two side guide plates; two guide rollers, which are respectively arranged on the guide roller supports; when the intermediate guide plate falls to the lowest point, the center point of the guide roller coincides with the vertical line of the center point of the rotating shaft; when the intermediate guide plate falls to the lowest point, the roller surface of the guide roller should be 3-10 mm higher than the top surface of the rotating shaft.

2. The device for reducing the scratch of the strip steel at the inlet of the recoiling unit according to claim 1, wherein: the guide roller is fixed on the guide roller support through a pressing plate and a pressing plate bolt; a plurality of horizontal adjusting shims are arranged between the guide roller and the guide roller support in the horizontal direction, the horizontal position of the guide roller can be adjusted by adjusting the number and position of the horizontal adjusting shims, and the adjustment range of the horizontal position is controlled within ±2 mm; a plurality of height adjusting shims are arranged between the guide roller and the guide roller support in the longitudinal direction, the elevation of the guide roller can be adjusted by adjusting the number and position of the height adjusting shims, and the adjustment range of the elevation is controlled within 0-3 mm.

3. The apparatus of claim 2, wherein, the power mechanism comprises: an extension oil cylinder fixed support, which is fixedly arranged at the bottom of the end of the movable guide plate; an extension oil cylinder middle support, which is fixedly arranged at the bottom of the fixed bottom plate; an intermediate guide plate extension oil cylinder, one end of which is connected with the extension oil cylinder fixed support, and the other end is fixedly connected with the extension oil cylinder middle support; a guide plate swing oil cylinder lifting support, which is fixedly arranged at the bottom of the fixed bottom plate; a guide plate swing oil cylinder fixed support, which is fixedly arranged on the structure of the recoiling unit; a guide plate swing oil cylinder, one end of which is fixedly connected with the guide plate swing oil cylinder fixed support, and the other end is fixedly connected with the guide plate swing oil cylinder lifting support; The intermediate guide plate and the guide roller oscillation cylinder are connected with the control mechanism.

4. The device for reducing the scratch of the strip steel at the entrance of the recoiling unit according to claim 3, characterized in that: The surface of the guide roller is soft material, and the surface hardness is Shore A 85±5; The diameter of the guide roller is controlled within 60mm-80mm; The opening width of the cavity is 5mm-10mm larger than the diameter of the guide roller.

5. The device for reducing the scratch of the strip steel at the entrance of the recoiling unit according to claim 4, characterized in that: When the intermediate guide plate is lifted to the highest height, the roller surface height of the guide roller is not lower than the upper surface height of the guide plate.

6. A reel-up group, characterized by The recoiling unit comprises the device for reducing the scratch of the strip steel at the entrance of the recoiling unit according to any one of claims 1-5.

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