JPS60206553A - Method and device for coiling thin metallic sheet - Google Patents

Abstract

PURPOSE:To produce a thin sheet having high thickness accuracy and guality by moving the position of a coiling center according to the quantity of coiling thereby maintaining the specified pass line position and measuring the thickness of the thin sheet metal with high accuracy. CONSTITUTION:The center of a coiling drum 6a moves on the revolving locus 10 of the drum 6a and advances to 01-0n from the start till end of coiling. The movement of the drum 6a is controlled according to the quantity of coiling of the thin sheet 5 coiled on the outside periphery of the drum 6a, i.e., the quantity of fatting-up by coiling so as to contact always tangently with the pass line 11 set in the stage of starting the coiling, by which the sheet is coiled up to the max. coil diameter 8 without fluctuation in the position of the pass line 11.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method and device for winding a thin sheet metal, and in particular to a winding method and device for winding a thin sheet metal, in particular a method for keeping the passing position (hereinafter referred to as a pass line) of continuously formed sheet metal always constant. The present invention relates to a method and device for winding a thin sheet metal suitable for preservation.

[Background of the invention]

Among the methods for producing thin sheet metals, methods for producing molten metal quenching, as typified by amorphous alloys, have traditionally been at the testing and research stage, so the production volume per charge is relatively small; There was also little need to control the plate thickness during one charge. However, in recent years, with the progress of research and development in manufacturing technology, the production volume has increased and continuous winding technology has been established.
With continuous charge or several charges,
It has become important to ensure optimal manufacturing conditions by measuring and controlling the thickness and other properties of the formed thin plate immediately after forming and before winding.

A conventional technique will be explained with reference to FIGS. 1 and 2.

The molten metal 1 is melted or held in a container 2, and is ejected from a nozzle 3 provided near the bottom of the container 2 onto the outer circumferential surface of a cooling roll 4 that is rotating at a high speed, and is rapidly blown onto the cooling roll 4. It solidifies into a thin plate 5, whose tip is captured by a winding drum 6a and continuously wound. The thin plate 5 that is continuously wound around the winding drum 6a gradually increases its diameter and becomes a coil 7, and reaches the maximum coil 8 when winding is completed.

The winding device shown in FIG. 1 has two winding drums 6a and 6b, and revolves on a circular locus 10 of the same radius around a central axis 9 common to both. 6b is used alternately to carry out continuous production.

The passing position of the formed thin plate 5 until winding is at the pass line 11 when winding is started by the winding drum 6a, and as the diameter of the winding coil 7 increases, it gradually moves upward until winding is completed. When the maximum coil is 8 at the end, the coil φ moves upward as the winding progresses, like the pass line 12. In addition, if it is necessary to measure the thickness of the formed thin plate 5 after it leaves the cooling roll 4 and before it is wound up, for example, the X-ray generator 13, the X-ray beam 14 and the detector 15 It is conceivable to provide an X-ray thickness gauge 16 composed of:

Fig. 2 shows the case where the X-ray thickness gauge 16 is used to measure three points in the width direction of the thin plate 5, at the center and near both ends. Total 1
6a, 16b and 16c will be provided. In this case, as the winding of the thin plate 5 progresses, the diameter of the coil 7 increases and the pass line of the thin plate 5 continuously moves from 11 to 12, so that the X-ray beams 14b and 14c at both ends are initially However, as the pass line moved from 11 to 12, the earlier X-ray beams 14b and 14c no longer crossed the thin plate 5, making it impossible to measure the plate thickness. .

As a means to solve this problem, the X-ray thickness gauge 16a,
There is a method in which the path lines 16b and 16c are moved upward at the same time, but this method has the disadvantage of requiring a large-scale device. In addition, as another means,
There is also a method in which only one set of 6 is used and the set is moved in the board width direction to measure the board thickness at each part in the board width direction, but this method also has the disadvantage of requiring a complicated scanning device.

In order to further improve the measurement accuracy, it is necessary to maintain the right angle between the X-ray beam 14 and the pass line 11 or 12. To do this, as the pass line changes from 11 to 12, the It also becomes necessary to provide a function to follow and change the angle. Furthermore, since the pass line changes from 11 to 12, there is also a drawback that the distance between the X-ray generator 13 and the detector 15 has to be widened.

The winding method in which the pass line of the thin plate 5 fluctuates as described above has a drawback as seen in the case of thickness measurement.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned points, and its object is to produce a thin sheet metal whose pass line can be kept constant from the start to the end of winding of continuously manufactured thin sheet metal. The present invention provides a winding method and device.

[Summary of the invention]

The present invention is configured such that a plurality of winding drums each driven by a motor for winding a thin metal sheet formed by a thin sheet metal forming roll are provided on a revolving disk and alternately wind up the thin metal sheet. In a so-called carrousel type winding device, a calculation device is provided to detect and calculate the amount of thickness of the winding drum, and the motor that drives the revolving disk is controlled by the calculation result via a winding drum position control device. The center of the winding drum is moved so that the pass line of the thin sheet metal is always at a constant position, and the outer periphery of the winding drum or the coil wound on the winding drum is always aligned with the pass line. The desired purpose is achieved by making the lines touch each other in the form of a tangential line.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 3 to 7. In this figure, parts that are the same as those of the conventional example shown in FIGS. 1 and 2 are indicated by the same symbols. As shown in FIG. 3, the molten metal 1 in the container 2 is ejected from the nozzle 3 onto the cooling roll 4 rotating at high speed, solidifies into a thin plate 5, and is wound onto the winding drum 6a or 6b. The configuration for measuring the thickness of the thin plate 5 using the X-ray thickness meter 16 is the same as the conventional example shown in FIGS. 1 and 2. Winding drum 6 which is a feature of the present invention
An embodiment of the moving mechanism will be described below with reference to FIGS. 4 and 5.

The winding drums 6a and 6b are attached to a frame 19 on which a guide disk 17 and a revolution gear 18 are coaxially fixed for making the winding drums revolve around the central axis 9, together with winding drum drive motors 20a and 20b, respectively. ing. These guide disk 17, revolving carrier 18, frame 19, and winding drum 6a.

6b and drive motors 20a, 20b, the winding device 21 is supported at the rear by a bearing 22, and is supported at the front by two rollers 23a, 23b provided at the bottom via a guide disk 17. It is rotatably supported and revolves around the central axis 9.

The revolving gear 18 meshes with the revolving pinion 24,
The revolution pinion 24 is driven by a revolution drive motor 25 to cause the entire winding machine 21 to revolve.

A rotation amount detector 26 such as a pulse counter type is provided coaxially with the revolving pinion 24, and the entire winding machine 21,
That is, the position of the minute axis movement of the winding drums 6a and 6b is detected.

The operation of one embodiment of the present invention configured as described above will be described below.

In FIG. 3, the winding drum 6a shown by the solid line ÷ shows the time when winding of the thin plate 5 is started, and the center of the winding drum 6a at this time is ol, and the winding drum 6a shown by the two-dot chain line
' indicates the end of winding, and at this time the center of the winding drum 6a' is on.

The center of the winding drum 6a is the revolution locus 1 of the winding drum 6a.
01゜02, OB from the start of winding to the end
,...On. The movement of the winding drum 6a is controlled by the means described later according to the winding amount of the thin plate 5 wound around the outer periphery of the winding drum 6a, that is, the winding thickness.
By always making a tangent contact with the pass line 11 set at the start of winding, winding can be performed up to the maximum coil diameter of 8 without causing any fluctuation in the position of the pass line 11.

The relationship between the amount of winding thickness and the amount of movement of the center of the winding drum is approximately expressed by the following equation. (See Figure 6) sin A θ
=C#Jr However, Ar: Increase amount of the winding coil radius in minute time Aθ: Movement angle of the winding drum center when the take-up coil radius increases by Ar C: Constant = 1/R R: The movement angle of the winding drum center The orbit radius, that is, the amount of movement (angle) of the winding coil is proportional to the increase in the winding coil diameter. Therefore the diameter or radius of the winding coil (or the diameter or radius of the winding drum at the start of winding)
By detecting this, the amount of movement of the center of the winding drum can be automatically controlled by means described later.

An example of control for maintaining the pass line constant against changes in the winding thickness will be described with reference to FIG.

The cooling roll 4 is driven by a motor M1 controlled by a speed control device 27 so as to rotate at a set constant speed. On the other hand, the winding drum 6a is controlled by a tension control device 28 and driven by a motor M2 so that the thin plate 5 passes through the pass line 11 and is wound at a preset constant tension. The amount of winding thickness of the thin plate 5 on the winding drum 6a is
Since the traveling speed of the cooling roll and the winding drum are the same, and the outer diameter D1 of the cooling roll 4 and the outer diameter D2 of the winding drum 6a are constant, the increase in the amount of winding thickening Δr and The outer diameter.

The following relationship holds true with D2.

However, N1: Number of rotations of the cooling roll 4 N2: Number of rotations of the winding drum 6a From this relationship, the revolution pinion 24 is controlled by the winding drum position control device 31 via the speed difference calculation device 29 and the winding thickness calculation device 30. It is driven by a motor M to perform revolution control. Further, the amount of revolution detected by the rotation amount detector 26 is fed back to this control to perform optimal control.

According to this embodiment, it is possible to keep the pass line position constant by moving the winding drum to follow the amount of winding thickening by using the revolution function of the winding drum used for continuous winding. It can be done easily.

In this embodiment, a case has been described in which a speed difference calculation device is used to detect the amount of winding thickness. However, there are other means to directly measure changes in the diameter of the winding coil, such as a dimension measurement method using radiation, ultrasonic waves, etc., or an image measurement method. A similar effect can be obtained by connecting to the winding drum treatment control of the control block using a measurement method such as processing.

Further, in this embodiment, a method and apparatus for directly forming a thin plate from molten metal have been described, but it goes without saying that similar means can be applied to the case where a thin plate is formed by rolling and then rolled up, and the same effect will be obtained. .

〔Effect of the invention〕

As described above, according to the present invention, the pass line position is kept constant by moving the disk that supports the take-up drum for winding the thin metal sheet according to the amount of thickness of the thin sheet wound on the take-up drum. Therefore, the thickness of the thin sheet metal can be measured with high precision, and by feeding back the measured value to the thin sheet metal forming process, high quality thin sheets with high thickness accuracy can be manufactured. The effect is great because it has become possible to do this. .

[Brief explanation of drawings]

Figure 1 is a configuration diagram showing a conventional thin sheet metal winding device;
The figure is a cross-sectional view of FIG.
5 is a front view showing the moving mechanism of the winding drum shown in FIG.
FIG. 6 is an explanatory diagram showing the relationship between the winding line and winding according to an embodiment of the present invention, and FIG. 7 is a side view showing the main parts of the present invention. It is a system diagram for controlling the pass line position to be constant. 4... Cooling roll, 5... Thin plate, 6a, 6b...
Winding drum, 7... Coil, 9... Center shaft, 11.
12...) (sline, 16...X-ray thickness gauge, 17.
...Guide disk, 18--Revolving gear, 19... Fray 4.20a, 20b... Winding drum drive motor, 2
1... Winding device. 24... Revolution pinion, 25... Revolution drive motor, 26... Rotation amount detector, 29... Speed difference calculation device, 30... Winding thickness calculation device, 31... Winding Drum position control device. Agent Patent Attorney Akio Takahashi Kaya S Tomoe 2423 23rd Part G

Claims (1)

[Scope of Claims] 1. A thin sheet metal winding method in which a winding center position for winding a thin sheet metal formed by a thin sheet metal forming roll is movable during winding, wherein the thin sheet metal is wound from the forming roll. The passing position of the thin metal sheet to the device remains constant from the start of winding to the end of winding. A method for winding thin sheet metal characterized by moving the winding center position according to the amount of winding. 2. In a thin sheet metal winding device in which a plurality of winding drums for winding the thin sheet metal formed by the thin sheet metal forming roll are provided on a revolving disk so as to be each driven by a motor, the winding drum a winding thickness calculation device that calculates the winding thickness of the thin sheet metal wound on the sheet metal; a motor that drives the revolving disk; and a winding drum position control device that controls the position of the winding drum. By setting up
The motor for driving the disc is driven via a winding drum position control device according to the winding thickness calculation result to maintain a passage position of the thin metal sheet from the forming roll to the winding device at a constant position; A winding device for thin sheet metal, characterized in that the winding device is configured to control the position of the winding drum.