KR20080041577A - Winding apparatus for rolled thin plate - Google Patents

Abstract

An apparatus and a method for coiling a thin strip to be rolled are provided to coil the thin strip to be rolled in a simple and inexpensive manner in a state that a pressing pressure to the thin strip to be rolled is not varied according to the diameter of a coiled coil, or product defects such as damages, coiling creases, and ruptures are not generated on the thin strip to be rolled. An apparatus for coiling a thin strip(3) to be rolled comprises: a coiling shaft(1) for coiling a thin strip to be rolled into a coil shape; an iron roller(4) which comes into contact with an outer surface of the thin strip to be rolled that has been coiled into the coil shape; an iron roller supporting member(5) for supporting the iron roller in a way that the iron roller advances or retreats; an iron roller pressing pressure imparting unit(8) for imparting a pressing pressure of the iron roller to the thin strip to be rolled of the coil shape through the iron roller supporting member; and a controller for controlling the pressing pressure to the thin strip to be rolled to a predetermined pressure. The controller includes an iron roller dead load compensation unit for compensating an influence due to dead load of the iron roller according to a change in the coil diameter of the thin strip to be rolled during coiling. The iron roller supporting member includes a contact pressure relieving unit(10) for relieving pressure of a contact between the iron roller and the thin strip to be rolled that is being coiled.

Description

Winding device of rolled sheet steel {WINDING APPARATUS FOR ROLLED THIN PLATE}

The present invention relates to a winding device of a rolled sheet to be rolled up while applying a pressing pressure to an outer surface of the rolled sheet rolled in a coil shape by an iron roller when the rolled sheet is wound in a coil shape by a winding shaft. will be.

When the rolled thin sheet (rolled material having a sheet thickness of about 0.05 mm or less) made of stainless steel or copper is wound on a spool attached to the winding shaft of the winding device, wrinkles may occur and lead to winding failure. . In the winding apparatus which is not equipped with the effective apparatus for preventing such wrinkle generation, the wrinkle operation was prevented by the study in the rolling operation which increases winding tension or slows down a rolling speed.

A winding device and a winding method according to a conventional example for the purpose of preventing the occurrence of wrinkles will be described below with reference to FIG. 4 is an explanatory view of a main part of a winding apparatus of a metal foil, showing an embodiment according to the prior art;

The winding apparatus of this metal foil according to the prior art includes a core drive mechanism 32 for applying a winding torque to the core 31 in a winding device of a metal foil of winding a metal foil around a core, and the core being wound up. The touch roller 34 which contacts the outer periphery of the winding coil 33 of the metal foil S formed on 31 by the required contact pressure, and the feeding roller which injects the metal foil S to the touch roller 34 ( 35 and a final nip roller 36 capable of inducing the metal foil S fed from the feed roller 35 to be wound onto the touch roller 34 and pressing the metal foil S to the touch roller 34. And the torque adjusting mechanism 37 of the touch roller 34 is provided.

And in such a winding apparatus WHEREIN: The winding method of the metal foil strip S which concerns on this conventional example is carried out to the said metal foil ribbon S by adjusting the torque of the touch roller 34 in the said torque adjustment mechanism 37. It is a method of applying the stretching force required to eliminate local relaxation and winding while applying the winding torque to the core 31 by the core driving mechanism 32 (see Japanese Patent Laid-Open No. 2001-150021).

However, in the winding apparatus which concerns on the said prior art example, it consists of a complicated roller structure and a control mechanism, and becomes large facility cost. Moreover, since the winding method of this winding apparatus is an upper winding system which winds up a metal foil band from the upper side of a core, it is the winding of the to-be-rolled thin plate which consists of stainless steel or copper material by the lower winding system which winds up from the lower side of the said spool. Not applicable Further, as can be clearly seen from Fig. 4, there are many rollers in contact with the metal foil, and there is a problem that the possibility of slip scratches or depression scratches due to the contact with the rollers increases.

As a wrinkle prevention in the winding apparatus of such a lower winding system, although the winding apparatus provided with the iron roller which gives press pressure to the to-be-rolled thin sheet at the time of winding is used conventionally, a winding point and a winding shaft Since it is the lower part of the spool mounted on the spool, the iron roller should be of the type pushing against the lower part of the spool. Therefore, it is largely changed under the influence of the self-weight of the iron roller according to the press pressure to the to-be-rolled thin plate set at the start of winding, and the increase in the coil diameter, and winding wrinkles generate | occur | produce throughout the coil from rolling start to completion. You may not be able to prevent this.

In other words, if the pressing set pressure of the iron roller at the start of winding is too high, wrinkles are rolled up by pushing too much, and bending occurs, resulting in product failure. This problem does not occur at the start of rolling, but may occur when the coil diameter increases. The product failure due to the bending may be transferred to the inside of the coil due to the coiling force of the coil. In this case, the inside of the coil to which the influence of the bending is transferred is also defective.

On the contrary, if the pressing pressure of the iron roller set at the start of winding is too low, it cannot be ironed uniformly in the plate width direction, and air is rolled into the coil at any point in the plate width direction at the start of winding. Winding wrinkles may arise due to this air which dried up. In this case, the wrinkles may be transferred up to a constant winding thickness. When such a winding wrinkle occurs, when a coil is rewound in a next process, problems, such as a flaw, bending, concavity, glossiness nonuniformity, etc. generate | occur | produce on the surface of a to-be-rolled thin sheet, and become a product defect.

Accordingly, it is an object of the present invention to provide a simple, low cost rolled product that does not change the pressing pressure on the rolled sheet according to the winding coil diameter and does not cause product defects such as damage, winding wrinkles or bending to the rolled sheet. It is to provide a winding method and apparatus for thin sheets.

In order to achieve the above object, the means employed by the winding method of the thin rolled sheet according to the present invention is a winding device of the thin rolled sheet, a winding shaft for winding the rolled sheet in a coil shape, and wound in a coil shape. Pressing pressure of the iron roller to the coiled rolled sheet through the iron roller in contact with the outer surface of the thin plate to be rolled, the iron roller support member for supporting the iron roller in a retractable manner, and the iron roller support member. And an iron roller pressurizing means for imparting a pressure and a controller for controlling the pressurized pressure on the rolled thin sheet to a predetermined pressure, wherein the controller is configured to change the coil diameter of the rolled thin sheet upon winding. By changing the position of the iron roller support member and controlling the pressing pressure of the iron roller, the eye at the time of winding of the rolled thin plate The pressing pressure on the rolled thin plate of the ron roller is controlled to be maintained at a predetermined pressure.

According to such a winding device of the rolled thin sheet, even if the coil diameter of the rolled thin sheet is changed at the time of winding, the pressing pressure of the iron roller to the rolled thin sheet of coil shape is maintained at a predetermined pressure, so that the winding wrinkles or bending It is possible to provide a low cost winding device with a simple configuration that contributes to the improvement of product yield without generating such quality defects.

In the above-mentioned winding apparatus of the thin sheet to be rolled, the controller further includes an iron roller self-weighting correction means for correcting an influence caused by the magnetic weight of the iron roller in accordance with a change in the coil diameter of the rolled sheet to be rolled up. It is preferable. According to this configuration, the influence of the iron roller self weight on the pressing pressure accompanying the increase in the coil diameter can be eliminated.

Moreover, in the winding apparatus of the said thin rolled sheet, it is preferable that the said iron roller support member is provided with the contact pressure relaxation means which moderates the contact pressure of the said iron roller and the said rolled thin sheet being wound. By this contact pressure mitigating means, the change of the said contact pressure accompanying subtle unevenness | corrugation of the wound coil surface is absorbed.

Moreover, in the above-mentioned winding apparatus of the rolled thin sheet, it is preferable that the winding method of the said winding shaft is a lower winding system which winds up the said to-be-rolled thin sheet from below the said winding shaft. This unwinding system is most suitable for winding of a rolled thin plate of stainless steel or copper.

According to the winding-up method of the thin rolled sheet according to the present invention, according to the change in the coil diameter of the rolled thin sheet at the time of winding so that the pressing pressure of the iron roller is maintained at a predetermined pressure, Since the pressing pressure of the coil-shaped thin sheet to be rolled is maintained at a predetermined pressure, a constant pressing pressure is applied to the thin sheet to be rolled from the start of winding up to the end of the coil, thereby reducing quality defects such as winding wrinkles and bending. It does not produce and contributes to the improvement of product yield.

Moreover, according to the winding device of the rolled thin sheet according to the present invention, the coil diameter of the rolled thin sheet at the time of winding is maintained such that the pressing pressure of the iron roller against the rolled thin sheet is maintained at a predetermined pressure when the rolled thin sheet is wound. According to the change, the pressure roller is provided with a pressing pressure holding means for maintaining the pressing pressure of the iron roller to the rolled sheet to be rolled at a predetermined pressure, so that no quality defects such as winding wrinkles or bending are generated. The winding device which consists of a simple structure which contributes to the improvement of a yield can be provided.

First, a method and apparatus for winding a rolled thin sheet according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a side view of a main part showing a main part of a winding apparatus of a rolled sheet to be rolled according to Embodiment 1 of the present invention, FIG. 2 is an arrow display diagram showing an arrow mark XX of FIG. 1 is a flowchart which shows the setting procedure of the pressurization pressure setting means of an electrostatic regulator.

First, the outline | summary of the winding method and apparatus of the rolled thin sheet which concerns on Embodiment 1 of this invention is demonstrated, referring FIG. Reference numeral 1 denotes a winding shaft, and the spool 2 is attached to the winding shaft 1. The rolled thin plate 3 is wound on the spool 2 from below by rotating the winding shaft 1 with a drive system (not shown). Reference numeral 4 denotes an iron roller, and the iron roller 4 is supported on the lower end side of the iron roller support member 5 so as to be rotatable through the bearing housing 7.

And the said iron roller support member 5 is rotatably supported by the point shaft 6 at the upper end, The support pin 9 is attached to the intermediate part of this point shaft 6 and the said bearing housing 7. The iron roller pressurizing means 8 is provided through this. By stretching the iron roller pressing force applying means 8, the iron roller 4 is moved forward or backward in the winding shaft 1 direction (represented by an arrow in FIG. 1), and the coil shape of the iron roller 4 is formed. It is comprised so that the pressing pressure to the said to-be-rolled thin plate 3 of may be carried out.

That is, the dashed-dotted line in FIG. 1 shows the pressure-pressure application state at the time of the winding start which advanced the said iron roller 4 to the said winding axis 1 direction, and the solid line shows the coil wound on the spool 2 ( 3a) The diameter is increased, and the pressing pressure applying state when the iron roller 4 is retracted is shown. And a press for maintaining the pressing pressure at a predetermined pressure by the iron roller pressing pressure applying means 8 and a controller (not shown) which will be described later configured to control the pressing pressure to the rolled sheet to a predetermined pressure. Pressure holding means is configured.

The iron roller 4 has the contact point at the winding point P1 to the spool 2 of the rolled thin plate 3 at the start of winding, and the winding point P2 to the coil 3a after the start of winding. The on-rolled thin plate 3 is disposed so as to coincide with the point of contact with the coil 3a. At this winding point P1 or P2, the iron roller pressing pressure applying means 8 causes the iron roller ( 4) is pressed in the coil 3a direction, and the pressing pressure to the to-be-rolled thin plate 3 is given. The reason why the iron roller 4 is disposed so as to substantially coincide with the winding point to the spool 2 or the coil 3a is to prevent the air from being rolled into the rolled thin plate 3 wound in the coil shape. For that.

Then, the iron roller pressing pressure is changed in accordance with the change of the diameter of the coil 3a wound on the spool 2 so that the pressing pressure of the iron roller 4 to the rolled thin plate 3 is maintained at a predetermined pressure. It is comprised so that the said iron roller support member 5 may advance and retract by the provision means 8, and the pressing pressure of the iron roller 4 is controlled by the below-mentioned iron roller pressing pressure control means accommodated in the controller.

In the winding apparatus of the rolled thin plate comprised as mentioned above, the winding method of the rolled thin plate 3 which concerns on Embodiment 1 of this invention is that the pressurization pressure with respect to the rolled thin plate 3 of the said iron roller 4 The iron roller support member 5 is advanced and retracted by the pressing pressure holding means in accordance with a change in the diameter of the coil 3a of the rolled thin plate 3 during winding so as to be maintained at a predetermined pressure. It is a method of controlling the pressing pressure to the said to-be-rolled thin plate 3 of the coil shape of (4).

Next, referring also to FIG. 2 and FIG. 3 together, the winding method and apparatus of the to-be-rolled thin plate which concerns on Embodiment 1 of this invention are demonstrated in detail. The iron roller support member 5 includes two iron roller support members, namely, a work side (hereinafter, WS), which are rotatably supported through a bearing 11 on a point shaft 6 fixed to the roller arm mounting base 13. And an iron roller arm 5a and a driving side (hereinafter, abbreviated as DS) iron roller arm 5b. And both ends of the said iron roller 4 are supported by the bearing housing 7 in the vicinity of the lower end of the WS iron roller arm 5a and DS iron roller arm 5b, respectively.

The bearing housing 7 has a ball bearing housed therein to allow the iron roller 4 to rotate, and is formed in a concave shape on the WS iron roller arm 5a side and the DS iron roller arm 5b side. The direction of the arrow shown in FIG. 1 along the guide groove by the action of the contact pressure mitigating means 10 fitted in the guide groove and interposed between the bearing housing 7 and the WS and DS iron roller arms. The slide is configured to be movable.

And when the said iron roller 4 advances by the action of the said iron roller pressurizing pressure supply means 8, and applies pressurization pressure to the to-be-rolled thin plate 3 wound by the coil 3a, the said contact is carried out. The pressure relieving means 10 is compressed by the reaction force of the pressing pressure, and the contact pressure between the iron roller 4 and the rolled thin plate 3 being wound is accompanied by subtle unevenness of the wound coil 3a surface. Absorb and mitigate fluctuations.

As the contact pressure alleviating means 10, a fluid cylinder, a buffer spring or the like using a fluid such as air or oil can be used. The iron roller support member 5 includes the WS iron roller arm 5a and the DS iron roller arm 5b in order to increase the overall rigidity including the iron roller 4 and to prevent twisting and deformation. It is connected by the upper stay 12a and the lower stay 12b.

In addition, the iron roller pressing pressure applying means 8, the WS air cylinder 8a and the DS air provided on the WS iron roller arm 5a and the DS iron roller arm 5b through the support pins 9, respectively. The pressing pressure is applied to the rolled thin plate 3 constituted by the cylinder 8b and wound on the spool 2 attached to the winding shaft 1 via the iron roller 4. The said WS air cylinder and DS air cylinder are comprised so that the said pressurization pressure can be changed by the output of the electropneumatic regulator which is not shown in figure.

In addition, the diameter of the coil 3a of the rolled thin plate 3 wound on the spool 2 is automatically calculated by the calculating means stored in the controller, and the iron roller 4 at any coil diameter during rolling. The self-weight vector of is configured to be corrected by the iron roller self-weight correction means described later stored in the controller. And the pressing force by the iron roller 4 to the to-be-rolled thin plate 3 in arbitrary coil diameters during rolling is calculated by the said calculation means, and is majored by the iron roller pressing pressure control means accommodated in the controller. The pressure of the regulator is set.

As the iron roller pressing pressure control means for controlling the pressing pressure of the electric regulator, the pressing force of the WS air cylinder 8a and the DS air cylinder 8b is set to a predetermined value according to the increase in the diameter of the coil 3a during rolling. In order to keep within a predetermined tolerance range, the following two systems are considered.

(1) A control system for increasing the pressure of the iron roller (4) proportionally or stepwise.

(2) A control system for setting the pressing pressure of the iron roller (4) in accordance with a predetermined program.

For easy understanding of the control method of (2), the following description will be made with reference to the flowchart in FIG. First, the following three values are input before rolling start (step 21).

A. WS Air Cylinder Pressing Force of Predetermined Value [= WSc]

B. Prestressing Force of DS Air Cylinder [= DSc]

C. Spool outer diameter (or coil diameter at the start of rolling)

And when rolling start (or winding start) (step 22), corresponding to the coil diameter R (x) computed separately during rolling, an iron roller self weight vector is correct | amended by the iron roller self weight correction means, and the following 2 data (WS) (x), DS (x)) is calculated (step 23).

In addition, the coil diameter R (x) is a rotation speed (value detected by the sensor) of the spool 2, the rotation speed (value detected by the sensor), and the input roller diameter (fixed value) of the spool 2, for example. It can be obtained by calculation using.

In order to correct the iron roller self-weight vector by the iron roller self weight correcting means, for example, the following may be used. The actual pressing pressure by the iron roller is obtained by subtracting the influence due to the weight of the iron roller support member 5 from the above-described air cylinder pressing force WSc, DSc of the predetermined value. Therefore, in order to keep the actual pressurization pressure by an iron roller constant, it is necessary to change the air cylinder press force from the said predetermined value so that the change of the influence part by the weight of the iron roller support member 5 may be canceled. It is iron roller self-weight correction that calculate | requires the change of this air cylinder press force. Here, since the rotation angle around the support shaft 6 of the iron roller support member 5 is calculated | required from R (x) by geometric relationship, the self-weight of the iron roller support member 5 is calculated by mechanical calculation from this rotation angle. Influence by

A. WS air cylinder pressing force during rolling [= WS (x)]

B. DS air cylinder press force during rolling [= DS (x)]

Next, it is determined whether WS (x) and DS (x) calculated next satisfy the following expressions (1) and (2), respectively (step 24).

Here, (alpha) and (beta) are preset upper limit values (the upper limit of an allowable range), respectively.

When the WS (x) and the DS (x) satisfy the equations (1) and (2), respectively, the pressure regulators of the electric regulators are applied to the electric regulators so that the WS (x) and the DS (x) are the same. The command value is set and changed (step 25), a predetermined pressing force is generated on the WS air cylinder 8a and the DS air cylinder 8b, and the process returns to the previous step 24. On the other hand, when WS (x) and DS (x) do not satisfy the above formulas (1) and (2), respectively, the process returns to step 23 again. In this way, after that, steps 22-25 are repeated, and the said pressing pressure with respect to the to-be-rolled thin plate 3 of the said iron roller 4 is maintained at predetermined pressure.

And when the winding of the to-be-rolled thin plate is complete | finished, the control demonstrated above also complete | finished. As the controller in which the iron roller pressing pressure control means is housed, another configuration may be adopted as long as the pressing pressure of the iron roller 4 is controlled to maintain the pressing force at a predetermined value (within a predetermined allowable range).

In addition, calculations for obtaining WS (x) and DS (x) may be simplified to subtract a value proportional to R (x) from WSc and DSc. As a result, the actual pressing pressure by the iron roller is kept approximately constant. This method becomes the above-mentioned "(1) control system which increases the pressure of the iron roller 4 proportionally or stepwise."

As described above, according to the winding-up method of the thin rolled sheet according to the present invention, according to the change in the coil diameter of the thin rolled sheet at the time of winding so that the pressing pressure of the iron roller is maintained at a predetermined pressure, Since the pressing pressure of the iron roller to the coiled thin sheet to be rolled is maintained at a predetermined pressure, a constant pressing pressure is applied to the thin sheet to be rolled from the start of winding up to the end of the coil, such as winding wrinkles or bending. It winds up without generating the quality defect of, and contributes to the improvement of product yield.

Moreover, according to the winding apparatus of the to-be-rolled thin sheet which concerns on this invention, the said iron roller is supported so that an iron roller support member can advance and retreat, and the said pressurizing pressure holding means is the said iron roller through this iron roller support member. An iron roller pressing force applying means for imparting a pressing pressure to the coiled thin sheet having a coil shape, and a controller for controlling the pressing pressure to the rolled thin sheet to a predetermined pressure, and thus the thin sheet to be rolled of the iron roller. By controlling the pressing pressure to the sheet, the pressing pressure on the rolled thin plate is reliably maintained at a predetermined pressure.

In addition, in the said embodiment, WS air cylinder press force and DS air cylinder press force are controlled separately. According to this system, when the rolled material is a tapered material, that is, a rolled material whose thickness is continuously changed in the plate width direction, the plate shift can be prevented by making the WS air cylinder pressing force and the DS air cylinder pressing force different. In the case of a rolled material with a constant sheet thickness, it may be controlled so that the pressing force of both air cylinders is the same.

Next, the winding method and apparatus of the to-be-rolled thin sheet which concerns on Embodiment 2 of this invention are demonstrated without using a following figure. However, since Embodiment 2 of this invention differs from the said Embodiment 1, it differs in the winding system of the to-be-rolled thin sheet, and since it is the same structure as the said Embodiment 1 except this, it is the following about the difference. Explain.

That is, while the winding method and apparatus of the rolled thin sheet according to the first embodiment is a lower winding system in which the rolled thin sheet is wound from below the spool attached to the winding shaft, the rolled thin sheet according to the second embodiment The winding method and the apparatus are comprised by the upper winding system which winds the said rolled thin plate from the upper side of the said spool.

Such an upper winding method is employed in a part for copper foil, a winding method and an apparatus for aluminum foil, and is often provided with the iron roller as described in Example 1 to prevent the occurrence of wrinkles. Also in the winding method and apparatus by the upper winding system provided with such an iron roller, as described in the winding method and apparatus of the rolled thin sheet according to the first embodiment, the roll of the iron roller is rolled when the rolled thin sheet is wound. Pressing pressure for maintaining the pressing pressure of the iron roller to the rolled thin sheet to be coiled at a predetermined pressure in accordance with the change in the coil diameter of the rolled thin sheet during winding so that the pressing pressure against the thin sheet is maintained at a predetermined pressure. The winding apparatus of the to-be-rolled thin sheet provided with the holding means can be used.

And in such a winding apparatus WHEREIN: By the winding method of the rolled thin sheet which controls so that the pressing pressure to the said to-be-rolled thin sheet of the coiled coil of the iron roller may be maintained at a predetermined | prescribed pressure, it will be said above than the conventional example over the whole winding. It is possible to maintain the pressing pressure uniformly and to prevent the occurrence of wrinkles.

BRIEF DESCRIPTION OF THE DRAWINGS The principal part side view which shows the principal part of the winding apparatus of the thin sheet to be rolled which concerns on Embodiment 1 of this invention.

FIG. 2 is an arrow display diagram showing an arrow mark (X-X) of FIG. 1 in a partial cross section; FIG.

3 is a flowchart showing the setting procedure of the pressure-pressure setting means of the electrostatic regulator according to Embodiment 1 of the present invention.

4 is an explanatory view of a main part of a winding apparatus of a metal foil according to an embodiment of the prior art;

<Explanation of symbols for the main parts of the drawings>

1: winding shaft

2: spool

3: rolled sheet steel

4: iron roller

5: iron roller support member

7: bearing housing

8: pressure applying means

9: support pin

Claims (4)

It is a winding device of a rolled sheet, A winding shaft for winding the rolled sheet into a coil shape, An iron roller in contact with the outer surface of the rolled thin sheet wound in a coil shape, An iron roller support member for supporting the iron roller in a retractable manner; An iron roller pressing force applying means for applying a pressing pressure of said iron roller to said coiled thin sheet to be rolled through said iron roller supporting member; A controller for controlling the pressing pressure to the sheet to be rolled to a predetermined pressure, The controller changes the position of the iron roller support member and controls the pressing pressure of the iron roller according to the change in the coil diameter of the rolled thin sheet at the time of winding, so that the iron roller is wound at the time of winding the rolled sheet. A winding device of a rolled thin sheet to control the pressing pressure on the rolled thin sheet to be maintained at a predetermined pressure. 2. The winding apparatus of claim 1, wherein the controller further comprises an iron roller self-weight correction means for correcting an influence caused by the weight of the iron roller according to a change in the coil diameter of the rolled sheet to be rolled up. . 2. The winding apparatus of claim 1, wherein the iron roller support member includes contact pressure alleviating means for alleviating the contact pressure between the iron roller and the rolled thin sheet being wound. The winding device of the to-be-rolled thin plate of Claim 1 whose winding method of the said winding shaft is a lower winding system which winds up the said rolled thin plate from the lower side of the said winding shaft.

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