JPS629717A - Coiler - Google Patents

Abstract

PURPOSE:To improve a responsiveness of a press roller and a winding property of a band plate on a mandrel by attaching pivotally a second frame supporting a press roller freely rotatably on an end of a first frame and by equipping respective cylinders for turning on said two frames. CONSTITUTION:A frame bearing 16, which is a rotation center of the second frame 9e unitedly supporting the unit roller (press roller) 7 and a circular guide 6c, together with the cylinder 13c rotating said turning are fixed on the first frame 9d. The second frame 9e is turned by the cylinder 13d supported with a trunnion 14 round the frame bearing 16 equipped outside the max. allowable coil 10 of the band plate 1. In the initial state of winding the band plate 1, the frame bearing 16 of the second frame 9e supporting the unit roller 7 and the circular guide 6c is positioned inside the max. allowable coil 10 and approached to the mandrel 8 to improve the winding property.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Field The present invention relates to a coiler in which a unit cooler presses a strip to be wound onto a mandrel in strip rolling equipment, and the coiler is guided by a circular guide.

<Prior Art> A coiler is a device that winds up a rolled strip and turns it into a coil for transportation or shipping after the primary process. This coiler is of the unit roller type, in which the strip is pressed against the mandrel by a unit roller, and both are guided by a circular guide, or the belt wrapper type, in which the belt is arranged so that the strip runs along the outer periphery of the mandrel. Or, a chain wrapper type with an A-latch installed instead of a belt, or a gripper installed on the outer periphery of the mandrel that temporarily stops the advance of the strip tip when it reaches the mandrel base. A gripper type gripper that grips the tip nA of the strip is known.

The above-mentioned unit roller type coiler includes a roller independent opening/closing type which has the function of opening and closing each of the unit coolers installed in the base coiler individually, and a roller independent opening/closing type which has the function of opening and closing each of the unit coolers installed in the base coiler individually. There is a roller-linked opening/closing type that opens and closes via a single actuator.

As shown in FIG. 3, which shows an example of such a conventional coiler, a rolled strip l is conveyed on a roller table 2 and drawn into a pair of pinch rolls 3a and 3b.

Then, he was guided through the gate 4, apron 5, over guide 6a, and throat guide 6b.
1- It is pressed against the outer periphery of the mandrel 8 by the roller 7. After the tip of the strip l reaches the mandrel 8, the strip l is moved to the mandrel 8 by a circular guide 6C that does not rotate integrally with the mandrel 8, the unit roller 7, and the mandrel 8, which are rotating at a circumferential speed faster than the entering speed. It is pressed and bent along the outer periphery ζ and wound around the outer periphery of the nodrel 8.

The unit roller 7 is controlled so that its outer peripheral speed is synchronized with the threading speed of the strip l from the time when the strip l reaches the unit a° - rough position and presses the strip l against the mandrel 8. However, the peripheral speed of the mandrel 8 is maintained at a speed higher than the advancing speed of the strip l until the strip l is integrally wound around the mandrel 8. and mandrel 8
The strip plate 1 located on the outer periphery of is.

By being pressed against the mandrel 8 by the unit roller rough, several turns are wound around the outer periphery of the mandrel 8 and then wound around the mandrel 8 integrally. After the strip l is wound around the mandrel 8, the unit roller 7 normally does not need to press the strip 1, so the unit roller 7 is retracted to the outside of the maximum permissible coil lO that can be wound on the mandrel 8. It will be done.

On the right side of the coiler, the purpose is to improve the winding property of the strip plate 1 against slips around the mandrel 8 and to reduce scratches that may occur on the surface of the strip plate 1.

It is important to reduce the number of turns that the strip l wraps around the mandrel 8. In addition, the responsiveness of the unit roller 7 is improved so that the unit roller 7 does not ride on the step-like overlapping portion that occurs at the tip of the band plate l when the winding is overlapping. It is important to improve the quality of the product coil by reducing the number of bruises (top marks) 8 that occur on the coil. Therefore, when 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 the position of the unit roller 7 must not be controlled. In this case, it is necessary to reduce the inertial reaction force of the unit roller 7 and its support mechanism in the radial direction of the mandrel 8.

In order to improve the windability of the strip l around the mandrel 8, it is necessary to minimize the slack between the winding of the strip l and the outer periphery of the mandrel 8.

Also, to improve the response of the unit low rough.

The weight of the unit roller rough and its supporting frame is reduced, and the opening/closing movement direction of the unit roller 7 is changed to the mandrel 8.
It is necessary to approximate the normal direction of the outer circumferential surface of the band l to reduce the amount of movement of the unit roller 7 due to the roll thickness of the band l.

Hereinafter, conventional coilers of the roller independent opening/closing type will be explained with reference to FIGS. 7 to 12. Of 6C, only the unit cooler that first presses the tip of the strip l that has entered the mandrel 8, the circular guide that guides it first, and their support frame are shown; are omitted from illustration.

In the one shown in FIG. 7, the rotation bearing part of the unit roller 7 and the circular guide 6C are integrated, and these are attached to the main frame 9a which is rotatably supported on the coiler housing 18 by a 7-frame bearing 16. Fixed, Koirano\Using 18
It is of the type that opens and closes by a hydraulic cylinder 13 supported by a trunnion 14.

This is the most common type of coiler that can open and close independently.

In order to improve the responsiveness of the unit roller 7 of the coiler shown in FIG. 7, the unit roller rough shown in FIG. A buffer spring 15 is incorporated between the roller frame 9b and the roller frame 9b.

In this coiler, one circular guide 6C is the main frame 9.
Since the roller frame 9b is rigidly supported by the main frame 9a, there is a drawback that the moving distance of the roller frame 9b relative to the main frame 9a cannot be increased.

The one shown in FIG. 9 has an auxiliary circular guide 17 fixedly attached to the CI-ra frame 9b,
Both the auxiliary circular guide 17 and the circular guide 6C are designed to have a comb-teeth shape so that they do not interfere with each other when the guide 7 moves relative to the circular guide 6C. can be alleviated somewhat.

The one shown in FIG. 1O has the support and opening/closing operation of the unit roller 7 separated from the circular guide 6C.
This is a turtle that has improved the responsiveness of the unit low rough.

The one shown in FIG. 11 is a type in which a hydraulic cylinder 13 is incorporated in place of the spring 15 in the coiler I shown in FIG. The position of the unit roller 7 can be controlled by a hydraulic cylinder 13 to prevent the unit roller 7 from shockingly increasing the riding force on the step-like overlapped portion that occurs where the parts are rolled up. .

The one shown in FIG. 12 is of a type in which the main frame 9a is opened and closed by a link mechanism composed of two arms 11.

<Problems to be Solved by the Invention> In various conventional coilers, there are mechanical limitations in improving the response of the unit roller and improving the winding ability of the strip around the mandrel. Therefore, it was difficult to make significant improvements. Next, these problems will be further analyzed and explained with reference to FIGS. 4 to 6.

In the coiler shown in FIG. 4, the frame bearing 1 is the center of rotation when the unit roller rough or circular guide 6C opens and closes.
6 is placed on the outside of the maximum permissible coil lO, or even if the coiler of the type shown in Fig. 9 is equipped with an auxiliary circular guide 17-i and can be rotated inside the permissible maximum coil lO.
The frame bearing 16, which is the center of rotation of the circular guide 6C itself, is located on the outside of the maximum allowable coil IO. In order to improve the responsiveness of the unit roller 7 in the coiler shown in FIG. must be brought close to zero. Therefore, since the unit roller 7 rides up the step of the 10-roll thick strip corresponding to the plate thickness t of the strip l, it is possible to use the unit roller 7 when the moving distance is small or when controlling the position of the unit roller 7. The distance the unit roller rough has to move to avoid this is small, which improves the responsiveness of the unit roller rough. Note that the minimum value of the unit roller rough movement distance is t when α=0 (degrees).

Therefore, the frame bearing 16 is the pivot point for the one circular guide 6C and the unit roller 7.

Suppose that the coil is moved to the left in the figure from the state shown in FIG. 4 outside the maximum allowable coil lO.

The winding thickness h of the strip l in this case.

As shown in FIG. 5, which shows the relationship between the outer circumferential surface of the band plate L and the distance 1 between the unit roller rough and the end of the circular guide 6C on the opposite side, the shapes are sequentially a, b, and c. In this case, the mechanism will not work. 1 circular guide 6c like the type of coiler shown in FIGS. 8, 9 and 11.
Even in the type in which the a-ra frame 9b that supports the unit cooler 7 is provided on the main frame 9a integrated with the main frame 9a, the movable distance of the unit roller 7 in the radial direction of the mandrel 8 with respect to the main frame 9a is small. The relationship between h and C is the same, but there is a drawback that α cannot be made small.

In FIG. 6, the distance δ between the tip of the strip l and the outer peripheral surface of the mandrel 8 when the tip of the strip l wraps around the mandrel 8 once and overlaps the mandrel 8, and the distance δ between the tip of the strip l and the outer peripheral surface of the mandrel 8 with respect to the rotation center of the mandrel 8. Regarding the relationship between the angle β between the end of the throat guide 6b and the center of rotation of the first knee knit me 9F0, the smaller the angle β, the smaller the index value δ of the slack of the strip l.

Further, the smaller the value of δ is, the smaller the slack of the first roll of the strip l on the mandrel 8 becomes, and the winding property of the strip l on the mandrel 81 is improved.

However, in a conventional coiler, when trying to move the unit roller 7 closer to the throat guide 6b in order to reduce the angle β, the frame bearing 16 cannot be moved to the left in FIG. 4, so the angle α gradually increases. As a result, the response of the unit me rough is poor.

As a result, it was not possible to reduce the angle β.

The present invention solves one or more of the above-mentioned problems in conventional coilers, and provides a coiler that can significantly improve the response of the unit roller and the winding property of the strip around the mandrel I. The purpose is to

Means for Solving the Problems> The coiler of the present invention has a distal end facing the outer periphery of a mandrel for winding a strip, and a proximal end that rotates about an axis [gI] parallel to the axis of the mandrel. a first frame rotatably supported; a first drive device for rotating the first frame; a second pivoted frame;
a second drive device provided on the second frame and the first frame to rotate the second frame; and a second drive device rotatably supported by the second frame to assist in winding the strip around the mandrel. The present invention is characterized in that a plurality of frame units each having a pressing roller 7 are provided.

Function: A second frame that rotatably supports the pressure cooler is pivotally attached to the tip of the first frame.

By providing these two frames with separate rotation cylinders, both the angle α shown in FIG. 4 and the angle β shown in FIG. 6 can be reduced.

<Embodiment> As shown in FIGS. 1 and 2 showing the schematic structure of an embodiment of the coiler according to the present invention, a unit roller (pressing roller) 7 and a circular guide 6C (!:) are integrally supported. The al-frame bearing 16 and the cylinder 13c for rotating the compact second frame 9e are both assembled to the first frame 9d.

The first frame 9e is rotated by a cylinder 13d supported by a trunnion 14 around a frame bearing 160 provided outside the maximum permissible coil lO of the strip l. In this way, the first frame 9d and the second frame 9e can be opened and closed independently. Furthermore, when the first L/- frame 9d is closed, the frame bearing 16, which is the center of rotation of the second frame 9e, is located inside the maximum allowable coil IO.

A powerful force is applied to force the band plate 1-9 onto the mandrel 84 and wrap it around the unit roller 7, supporting the unit mill rough and the circular guide 6c in the initial state of the band plate l winding shown in FIG. If the frame bearing 16 of the second frame 9e is located inside the maximum permissible coil IO and close to the mandrel 8, the angle α shown in FIG. 4 and the angle β shown in FIG. 6 are made small.

All of the problems in the conventional coiler described with reference to FIGS. 4 to 6 are solved.

<Effects of the Invention> / According to the coiler of the present invention, the coiler is divided into a second frame that supports the pressing roller as a frame for operating the unit roller, and a first frame that rotates the second frame. This eliminates the constraints on the arrangement of conventional coiler mechanisms, and greatly improves the ability to wrap the strip around the mandrel and the responsiveness of the pressing roller.

[Brief explanation of drawings]

FIGS. 1 and 2 are operational conceptual diagrams showing one embodiment of a coiler according to the present invention, and FIG. 3 is a conceptual diagram showing an example of a coiler in a strip rolling facility. Figure 4 is a conceptual diagram showing the winding state of the strip around the mandrel. Figure 5 is a graph showing the relationship between the winding thickness of the strip and the gap between the strip and the circular guide. Figure 6 shows that the tip of the strip is attached to the mandrel. FIGS. 7 to 12 are conceptual diagrams of mechanisms showing examples of conventional coilers. In the drawing, l is a strip plate, 5c is a circular guide, and 7 is a unit a.
8 is a mandrel, 9d is a first frame, 9e is a second frame, 10 is a maximum permissible coil, and 13c and 13d are cylinders.

Claims (1)

[Claims] A first frame whose distal end faces the outer periphery of a mandrel for winding a strip, and whose proximal end is rotatably supported around an axis parallel to the axis of the mandrel; a second frame rotatably supported at the distal end of the first frame about an axis parallel to the axis of the mandrel; and a second frame and the first frame. a frame unit comprising: a second driving device provided in the second frame for rotating the second frame; and a pressing roller rotatably supported by the second frame to assist in winding the strip around the mandrel. Koira is characterized by having multiple pieces.