KR910003857B1 - Coiler - Google Patents

Abstract

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Description

Coiler

1 and 2 is a working conceptual view showing one embodiment of a coiler according to the present invention.

3 is a conceptual diagram showing an example of a conventional coiler installed in a strip rolling mill.

4 is a conceptual diagram showing a state in which the band is wound on the mandrel.

4 (a) is a conceptual diagram showing a state in which FIG. 4 approaches α = 0.

Fig. 5a is a graph showing the relationship between the thickness of a band wound and the gap between the band and the circular guide.

FIG. 6 is a conceptual diagram showing the situation when the band end is wrapped around the mandrel.

7 is a conceptual view illustrating a mechanism each illustrating a conventional coiler.

Fig. 9 (a) is a front view showing the assembled portion seen in the direction A of Fig. 9;

* Explanation of symbols for main parts of the drawings

1: Band 6C: Round guide

7: unit roller 8: mendrill

9d: first frame 9e: second frame

10: Maximum allowable coil 13c, 13d: Cylinder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coiler of a type in which a band wound on a band rolling facility is pressed onto a mandrel with a unit roller and guided by a circular guide.

The coiler is a facility that winds the rolled strip and winds the strip in order to transport or ship the next step. The coiler is a unit roller type in which the band plate is pressed onto the mandrel with the unit roller and guided by a circular guide, and the belt is disposed so that the band plate can follow the outer periphery of the mandrel. Of belt wrappers, of chain wrappers with roller chains instead of belts, or when the tip of the band reaches the mandrel. Gripper-type etc. of the type which hold | grips the front-end | tip of a strip | belt in a gripper built on the outer periphery are known.

In addition, the unit roller-type coiler includes a roller-independent opening and closing type that has a function of opening and closing each of the plurality of unit rollers equipped in one coiler, and a plurality of unit rollers by a link mechanism or a slide mechanism. There is a roller interlocking opening / closing type of opening and closing via one actuator.

As shown in FIG. 3 showing an example of such a conventional coiler, the rolled strip 1 is carried on the roller table 2 and drawn by a pair of pinch rolls 3a and 3b. Thus, it is guided between the gate 4, the apron 5, the overburden 6a and the draw guide 6b, and is pressed against the outer periphery of the mandrel 8 by a plurality of unit rollers 7. Lose. After the tip of the band plate 1 reaches the mandrel 8, the band plate 1 is with the mandrel 8, the unit roller 7 and the mandrel 8 rotating at a circumferential speed faster than the entry speed thereof. While being pressed and bent along the outer periphery of the mandrel 8 by the circular guide 6c which does not rotate integrally, it is wound around the outer periphery of the mandrel 8 and is overlaid.

As for the unit roller 7, when the band plate 1 reaches the place where the unit roller 7 is installed and presses the band plate 1 to the mendrel 8, the outer peripheral speed is the plate of the band plate 1 I) It is controlled to be equal to the speed, but the outer circumferential speed of the mandrel 8 is maintained at a speed higher than the traveling speed of the band plate 1 until the band plate 1 is integrally wound on the mendrel 8. Thus, the band plate 1 located on the outer circumference of the mandrel 8 is pressed by the unit roller 7 to the mandrel 8, and thus, after being wound several times on the outer circumference of the mandrel 8, the mandrel ( 8) integrally wound.

After being wound on the mendrel 8 of the band plate 1, the unit roller 7 is usually not required to press the band plate 1, so that the permissible maximum coil 10 that can be wound by the mendrel 8 The unit roller (7) retreats to the outside.

In the coiler, in order to improve the performance of winding the band 1 on the mandrel 8 and to reduce the scratches that may occur on the surface of the band 1, the band 1 is the mendrel 8. It is important to reduce the number of colds before winding up. In addition, the responsiveness of the unit roller 7 is prevented from being shocked on the unit roller 7 on the wound and overlapped portion of the band plate 1, which is caused by the end of the band plate 1. In this way, it is important to improve the quality of the product coil in such a way as to reduce the scratches generated by the unit rollers on the wound and overlapped portions of the band plate 1 in which the stepped phases occur. Therefore, in the case of controlling the position of the unit roller 7, it is necessary to increase the instantaneous movement speed, that is, the response speed of the unit roller 7 in the radial direction of the mandrel 8, and also the unit roller ( When the position of 7) is not controlled, it is necessary to reduce the inertia reaction force in the radial direction of the mandrel 8 between the unit roller 7 and its supporting mechanism.

In order to improve the performance of winding the mendrel 8 of the band plate 1, it is possible to loosen between the outer periphery of the mendrel 8 of the band plate 1 when the band board 1 is wound once. There is a need to reduce one. In order to improve the responsiveness of the unit roller 7, the weight of the unit roller 7 and its jersey frame is reduced, and the opening and closing direction of the unit roller 7 is normal to the outer peripheral surface of the mendrel 8. It is necessary to approximate the direction in the direction, so as to reduce the amount of movement of the unit roller 7 as the band plate 1 is wound and becomes thicker.

In the following, a conventional independent type of roller among the coilers will be described with reference to FIG. 7 and FIG. 12. However, these coilers are a plurality of unit rollers 7 and circular guides 6c provided in one coiler. In addition, only the unit rollers for the first pressing of the front end of the band plate 1 entering the mendrel 8 and the circular guard for guiding the first and the supporting frame thereof are shown, and the rest of the above elements are not shown.

As shown in FIG. 7, the rotating side bearing portion of the unit roller 7 and the circular guide 6c are integrally formed, and these are rotatably supported by the frame bearing 16 on the coiler housing 18. It is a type fixed to the main frame 9a and opened and closed by a hydraulic cylinder 13 supported by a trunnion 14 to the coiler housing 18, and is the most common as a roller-opening and closing type coiler. will be.

8, in order to improve the responsiveness of the unit roller 7 of the coiler shown in FIG. 7, the unit roller 7 is integrally supported using a roller frame 9b having a small mass. On the other hand, the buffer spring 15 is incorporated between the main frame 9a and the roller frame 9b. In this coiler, since the circular guide 6c is integrally supported by the main frame 9a, there exists a fault which cannot move the movement distance of the roller frame 9b with respect to the main frame 9a.

9, the auxiliary circular guide 17 is fixedly attached to the roller frame 9b supported by the spring 15, and integrally with the main frame 9a downstream of this auxiliary circular guide. It shows a type in which the supported circular guide 6c is mounted, and when the external force is applied to the roller 7, the auxiliary circular guide 17 fixed to the roller frame 9b by the spring 15 is compressed. Relative to 6c). In this relative movement, as shown in FIG. 9 (a), the interfering collecting portions of the auxiliary circular guide 17 and the circular guide 16 are incited with each other so as not to interfere with each other. To some extent.

As shown in FIG. 10, the responsiveness of the unit roller 7 is improved by installing and supporting the unit roller 7 separately from the circular guide 6c.

11 is of the type which incorporated the hydraulic cylinder 13 instead of the spring 15 in the coiler of FIG. 8, or in parallel with the spring, and has a step difference due to the distal end of the band plate 1. As shown in FIG. The hydraulic cylinder 13 can control the position of the unit roller 7 so that the unit roller 7 does not ride on the wound and overlapped portion of the band plate 1 to be shocked.

12, the main frame 9a is of the type which opens and closes by the link mechanism which consists of two arms 11. As shown in FIG.

In various conventional coilers, it has been difficult to significantly improve both of them due to the limitations in the mechanism structure, in terms of improving the responsiveness of the unit roller and improving the coiling ability of the belt. Next, in order to analyze these problems more concretely, it demonstrates based on FIG. 4 thru | or FIG.

In the coiler shown in FIG. 4, the unit roller 7 or the circular guide 6c is provided with a frame bearing 16, which is a rotation center at the time of opening and closing operation, on the outside of the allowable maximum coil 10. Although the auxiliary circular guide 17 can be attached and rotated from the inside of the allowable maximum coil 10 like the coiler of the type shown in FIG. 9, the frame bearing which is the center of rotation of the circular guide 6c itself ( 16 is outside the permissible maximum coil 10. In order to improve the responsiveness of the unit roller 7 in the coiler of FIG. 4, the line segment connecting the moving direction of the unit roller 7 with the side core of the unit roller 7 and the side core of the mandrel 8 is shown. The angle α formed by the line must be folded to zero degrees.

In other words, the responsiveness of the roller depends on the movement time of the roller 7. This means that the smaller the moving distance of the roller is, the more responsive it is. When α is shown in FIG. 4, the roller moves along the center line of the mendrel 8 and the center of the roller 7. Is responsive. Especially in the coiler which controls the position of the roller 7, it is preferable to make alpha shown in FIG. 4 near zero, and to improve responsiveness. Here, in order to bring the angle α close to zero, the frame bearing 16, which is the pivot point of the circular guide 6c and the roller 7, is located outside the allowable maximum coil 10, i.e., in the state shown in FIG. To the left. This state is shown in FIG. 4 (a). In Fig. 4 (a), the position of the roller 7 and the circular guide 6c is the initial state of the winding of the band plate 1, and the position of the roller 77 and the circular guide 6cc is taken during the prerolling of the band plate 1. It shows an enlarged step. That is, since the roller 7 and the circular guide are mounted in the same roller and rotate around the frame bearing 16, the angle at which the roller 7 moves to the position of the roller 77 by the wound thickness of the band plate 1 is β1. ) And the circular guide (6c) to the circular guide (6cc) the angle (β2) is the same. At this time, the gap ε1 between the tip of the circular guide 6c and the outer circumferential surface of the band plate 1 and the gap ε2 between the end of the circular guide 6cc when the band 1 is wound and the outer circumferential surface of the band plate 1 are different. As shown in Fig. 4A, the gap in the case where the frame bearing 16 is moved to the left in the drawing of Fig. 4 becomes ε2 <

This state is shown in FIG. 5, where a is the state in which the frame bearing 16 is close to FIG. 4, and b and c are the states in which the frame bearing 16 is gradually moved to the left in the figure of FIG. In this case, the relationship between the thickness h of the strip 1 and the thickness of the strip 1 and the gap ε between the outer circumferential surface of the strip 1 and the tip of the circular guide 6c is reduced in the order of a, b, c, The state of c is a state in which the tip of the circular guide 6c penetrates into the outer peripheral surface of the band plate 1, and in this case, it does not hold as a mechanism. Like the coiler of the type shown in FIGS. 8, 9 and 11, the roller frame 9b for supporting the unit roller 7 in the main frame 9a integrated with the circular guide 6c is mounted. Even in the form of a built-in type, since the moving function distance of the unit roller 7 in the radial direction of the mendrel 8 relative to the main frame 9a is small, the relationship between h and ε is the same, and α can be made small. There was no flaw.

In FIG. 6, the space | interval (delta) between the front-end | tip part of the board | plate board 1 and the outer peripheral surface of the mendrel 8, and the mendrel 8 when the front-end | tip part of the board | plate 1 is rolled up by winding the mendrel 8 one turn. The relationship between the end of the draw guide 6b on the side of the mandrel 8 and the center of rotation of the first unit roller 7 with respect to the center of rotation of the side of the mandrel 8 is small when the angle β is small. The lower the index value δ of loosening of the band plate 1 becomes.

In addition, the smaller the value of δ, the smaller the loosening of the band 1 on the mendrel 8 once, and the better the winding performance of the band 1 on the mendrel 8. .

However, in the conventional coiler, if the position of the unit roller 7 is to approach the draw guide 6b in order to reduce the angle β, the frame bearing 16 cannot move to the left during the fourth time. Therefore, the angle α gradually increases, and the responsiveness of the unit roller 7 worsens, and as a result, the angle β cannot be reduced.

The present invention is to provide a coiler that can solve various problems described above in the conventional coiler as described above and can significantly improve the responsiveness of the unit roller and the winding performance of the band plate to the mandrel. The purpose.

The coiler of the present invention can freely rotate the shaft circumference where the distal end faces the outer circumference of the mandrel for winding the band plate and the proximal end is parallel to the shaft center of the mandrel. A first frame supported to be secured, a first driving device to rotate the first frame, and a second frame supported to be freely rotatable around the axis parallel to the shaft center of the mandrel at the tip of the first frame; And a second drive device installed on the second frame and the first frame to rotate the second frame, and supported by the second frame so as to be freely rotated so that the band plate is wound around the mendrel. And a plurality of frame units having auxiliary push rollers and circular guides mounted on the second frame and facing the mendrel.

A second frame for rotatably supporting the push roller is created at the front end of the first frame, and the two frames are provided with separate rotating cylinders, so that the angles α and 6 shown in FIG. The angle β can be reduced together.

As shown in FIG. 1 and FIG. 2 showing a schematic structure of one embodiment of the coiler according to the present invention, the unit roller (pushing roller) 7 and the circular guide 6c are integrally supported. The frame bearing 16, which is the center of rotation of the compact second frame 9e, and the cylinder 13c for rotating the second frame are assembled together in the first frame 9d. The first frame 9d is rotated around the frame bearing 160 mounted on the outside of the allowable maximum coil 10 of the belt plate 1 by the cylinder 13d supported by the trunnion 14. In this manner, the first frame 9d and the second frame 9e can be opened and closed independently of each other. When the first frame 9d is closed, the frame bearing 16, which is the center of rotation of the second frame 9e, is positioned inside the allowable maximum coil 10. As shown in FIG.

The unit roller 7 and the circular guide in the state of winding initial stage of the band plate 1 shown in FIG. 4 in the unit roller 7 are pressed and wound by the mendrel 8. Positioning the frame bearing 16 of the second frame 9e supporting 6c inside the allowable maximum coil 10 and approaching the mendrel 8, the angle α and the angle shown in FIG. If the angle β shown in Fig. 6 is made small, all the problems in the conventional coiler described on the basis of 4-6 will be solved.

Hereinafter, the effect of the invention of the present invention will be described.

According to the coiler of the present invention, the unit roller is operated and at the same time divided into a second frame for supporting the press roller (unit roller) and a first frame for rotating the second frame. Arrangement restrictions in the mechanism are eliminated, and the performance of the band board being wound around the mandrel and the responsiveness of the push roller are greatly improved.

Claims (1)

A first frame having a distal end facing the outer periphery of the mandrel for winding the band plate and supported so that the proximal end can freely rotate an axis circumference provided at a position parallel to the center of the mandrel; A first frame, a second frame supported at a leading end of the first frame so as to be freely rotatable around a side parallel to the axis center of the mandrel, and the second frame and the first frame mounted on the first frame A second drive device for rotating the second frame, a push roller which is supported to be freely rotatable in the second frame to assist the winding of the band plate on the mandrel, and is installed in the second frame so that A coiler, wherein a plurality of frame units having opposing circular guides are installed.

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