KR100662128B1 - Rewinding apparatus for copper foil and methods for rewinding copper foil using the same - Google Patents

Abstract

The present invention relates to a rewinding apparatus and method of copper foil, and more particularly to a rewinding apparatus and method of copper foil that can be rewound tightly while preventing a weeping phenomenon such as a loosely wound electrolytic copper foil for FPCB (flexible printed circuit board). It is about. To this end, the inventors of the present invention copper foil rewinding device, plate; A rotating shaft rotatably installed on the plate and inserted into the hollow portion of the spool; Fixing means provided on the rotating shaft to fix the spool to the rotating shaft; And a rotating motor for rotating the rotary shaft, wherein the copper foil loosely wound on the spool by the rotation of the rotary shaft is tightly rewound.

Copper foil, rewind

Description

Rewinding apparatus for copper foil and methods for rewinding copper foil using the same}

1 is a perspective view showing an electrolytic copper foil winding apparatus for an FPCB (flexible printed circuit board) having a winding shaft according to the prior art.

Figure 2 is a cross-sectional view showing a winding device having an outer tube member and a main shaft according to the prior art.

3 is a perspective view showing a rewinding device for copper foil according to the prior art.

FIG. 4 is a view showing an electrolytic copper foil rewound using the rewinding device of copper foil of FIG. 3. FIG.

5 is a perspective view showing a rewinding device of the copper foil according to a preferred embodiment of the present invention.

6 is a cross-sectional view taken along line AA ′ of FIG. 5.

FIG. 7 is a cross-sectional view taken along the line A-A 'of FIG. 5, showing that the spool is fixed to the rotating shaft.

The figure which shows the copper foil rewound using the rewinding apparatus of the copper foil of FIG.

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

10, 16: copper foil roll 14: copper foil

20: Electrolytic Copper Foil Winding Device for FPCB with Winding Shaft

30: winding device having an outer tube member and a main shaft

55: fixing means 60: spool

40, 100: Rewinding device of copper foil

The present invention relates to a rewinding apparatus and method of copper foil, and more particularly to a rewinding apparatus and method of copper foil that can be rewound tightly while preventing a weeping phenomenon such as a loosely wound electrolytic copper foil for FPCB (flexible printed circuit board). It is about.

In general, an electrolytic copper foil for FPCB is manufactured by slitting a copper foil produced at a width of about 1000 mm or more to a width of about 30 to 61 mm, and then winding the slated copper foil on a rotating shaft.

As shown in FIG. 1, the slitting step is performed by passing the electrolytic copper foil roll 10 provided on the unwinding shaft 22 through the slitting knife cartridge 24. The electrolytic copper foil 12 is slitting to correspond to the number of slitting rolls 25 mounted on the slitting knife cartridge 24. That is, as the number of slitting rolls 25 increases, the electrolytic copper foil 12 slits to a narrower width.

On the other hand, when the slitting electrolytic copper foil 14 is wound around one winding shaft, the crying phenomenon, the unwinding phenomenon, or the tearing phenomenon of the electrolytic copper foil 14 may occur due to the thickness variation of the electrolytic copper foil. In order to solve this problem, a method of separating and winding the slitting electrolytic copper foils 14 has been proposed.

That is, as a method of separating and winding the slitting electrolytic copper foil 14, a method of separating and winding the respective winding shafts, a method using a winding device having an outer tube member and a main shaft, and a loose winding of the electrolytic copper foil Afterwards, there is a method of rewinding closely.

As shown in FIG. 1, a method of separating and winding the winding shaft is performed by adjusting the rotational speed of each winding shaft 27 according to the tension acting on the slit electrolytic copper foil 14. It is a method of winding up the electrolytic copper foil 14.

Each winding shaft 27 is provided with a motor (not shown) and a tension sensor (not shown). That is, when the electrolytic copper foil 14 is wound by the motor, the tension sensor detects the tension acting on the electrolytic copper foil 14 and lowers the rotation speed of the motor when the management reference value according to the thickness and tensile strength of the electrolytic copper foil 14 is exceeded. If the control point is not met, the motor speed is increased.

The method of using the winding device having the outer tube member and the main shaft uses the winding device 30 shown in FIG. The winding device 30 includes a main shaft 32 that is rotated by a motor (not shown), an outer tube member 35 that is installed outside the main shaft 32 and includes a plurality of tubes 34, and an outer tube. A clutch member 36 connecting the 34 and the main shaft 32 and a sensor member (not shown) for measuring the tension of the electrolytic copper foil (not shown) wound around the outer tube member 35 are provided.

The outer tube member 35 is the outer tube 34 having the same curvature of the outer peripheral surface of the main shaft 32 is provided around the main shaft (32). Slitted electrolytic copper foil is wound around each of the outer tube members 35, and the outer tube member 35 selectively slides with respect to the main shaft 32 independently of the neighboring outer tube members 35 according to the tension of the electrolytic copper foil wound up. do.

The clutch member 36 causes the outer tube 34 to slide relative to the main shaft 32 in accordance with the tension acting on the electrolytic copper foil. That is, when the tension exceeds a predetermined management reference value, the clutch member 36 causes the outer tube 34 to slide toward the main shaft 32, and when the tension falls below the management reference value, the clutch member 36 includes the outer tube 34. ) Is fixed to the main shaft (32).

In this way, the electrolytic copper foil winding device 20 for the FPCB having the winding shaft and the winding device 30 having the outer tube member and the main shaft each have a respective winding shaft 27 or outer tube member 35 for slitting the electrolytic copper foil. ), The ringing, loosening or tearing of the electrolytic copper foil can be prevented. That is, the electrolytic copper foil roll wound up favorably can be obtained.

However, since the winding apparatuses 20 and 30 cannot use the wide slitter which is currently widely used, there is a problem that a new facility investment is required.

On the other hand, the method of winding up the electrodeposited copper foil loosely after tightly wound is a method of loosely winding the slittered electrolytic copper foil, and pulling the ends of the rolled electrolytic copper foil roll to make it compact.

The method can use a wide slitter used in the manufacture of an electrolytic copper foil for a general circuit board. The slitting roll of the slitting knife cartridge which separates and cuts the electrolytic copper foil is used by adjusting to correspond to the width of the electrolytic copper foil for FPCB. However, by winding all the slitting electrolytic copper foil on one winding shaft, but by winding loosely, to prevent the crying phenomenon.

The rewinding apparatus, as shown in FIG. 3, while the loosely wound electrolytic copper foil roll 16 is positioned on the lower plate 42, and presses the electrolytic copper foil roll 16 to a predetermined pressure using the upper plate 44. The end of the electrolytic copper foil 14 is pulled by hand to densify the electrolytic copper foil roll 16.

Since the rewinding device 40 can use the existing wide slitter, there is an advantage in that the electrolytic copper foil can be wound tightly without additional facility investment.

However, since the upper plate 44 is densified from the outside of the electrolytic copper foil roll 16 while pressing the electrolytic copper foil roll 16, the apparatus 40 is crying on the electrolytic copper foil roll 17, as shown in FIG. There is a problem that a phenomenon may occur. That is, the side end of the electrolytic copper foil 14 may be damaged.

The present invention has been made to solve the above problems, an object of the present invention is to provide a rewinding apparatus and method of copper foil that can reduce the capital investment cost by using a conventional wide slitter.

Another object of the present invention is to provide a rewinding apparatus and method for copper foil which can prevent the crying phenomenon, the unwinding phenomenon, or the tearing phenomenon of the electrolytic copper foil.

In order to achieve the above object, a copper foil rewinding apparatus according to the present invention includes a plate; A rotating shaft rotatably installed on the plate and inserted into the hollow portion of the spool; Fixing means provided on the rotating shaft to fix the spool to the rotating shaft; And a rotating motor for rotating the rotary shaft, wherein the copper foil loosely wound on the spool by the rotation of the rotary shaft is tightly rewound.

Preferably, the fixing means has a fastener installed inside the rotary shaft, the fastener is pushed out of the rotary shaft by hydraulic or pneumatic pressure to be in close contact with the spool to secure the spool to the rotary shaft.

More preferably, at least four fasteners are installed at a predetermined angle on the rotation shaft.

Rewinding method of the copper foil according to another aspect of the present invention, the hollow portion is formed along the longitudinal direction, the outer peripheral surface of the copper foil loosely wound spool is installed on the rotating shaft so that the rotating shaft is inserted into the hollow portion; Fixing the spool to a rotating shaft; And rotating the rotary shaft in a direction opposite to the direction in which the copper foil is wound to densely rewind the copper foil.

Preferably, the rewinding method of the copper foil has a torque of 7 to 15 kgcm at the time of rotation of the rotating shaft.

Hereinafter, an apparatus and a method of rewinding a copper foil according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

The rewinding apparatus and method of the present copper foil is proposed to solve the problem which the existing rewinding apparatus (40 of FIG. 3) has. That is, the apparatus is a device for rewinding tightly while preventing the crying phenomenon, the unwinding phenomenon, or the tearing phenomenon of the electrolytic copper foil wound loosely after slitting by the wide slitter. The wide slitter is used to manufacture an electrolytic copper foil for a general circuit board, and the slitting roll of the slitting knife cartridge for separating and cutting the electrolytic copper foil is used by adjusting the width of the electrolytic copper foil for FPCB.

5 is a perspective view showing the rewinding apparatus of the copper foil according to a preferred embodiment of the present invention. 6 is a cross-sectional view taken along line AA ′ of FIG. 5, and FIG. 7 is a cross-sectional view taken along line AA ′ of FIG. 5, showing that the spool is fixed to the rotating shaft.

Referring to the drawings, the rewinding apparatus 100 of the copper foil includes a plate 52, a rotating shaft 54 provided on the plate 52, and a spool 60 on which the copper foil 14 is loosely wound, the rotating shaft 54. And fixing means (55) for fixing to it.

The plate 52 is a flat plate having a predetermined width and thickness. The plate 52 is provided with a rotating shaft 54. The plate 52 has a surface which the copper foil roll 16 contacts and is slidable. To this end, the plate 52 is made of a metal such as stainless steel, ceramic, or a high molecular compound. Preferably, the plate 52 has a weight sufficient to prevent vibration.

The rotating shaft 54 is a shaft inserted into the hollow portion 62 of the spool 60. The rotating shaft 54 is selectively rotated by a rotating motor (not shown). The rotary shaft 54 is formed with an injection port 53 for injecting air or hydraulic oil, and a fixing means 55 for fixing the spool 60 is provided. Preferably, the rotating shaft 54 is made of any one of a metal, a ceramic, a polymer compound.

The spool 60 has a hollow portion 62 formed therethrough along its longitudinal direction. The copper foil 14 is wound up loosely on the outer peripheral surface of the spool 60. The rotating shaft 54 is inserted and installed in the hollow part 62.

The fixing means 55 selectively secures the spool 60 to the rotating shaft 54. The fixing means 55 has a fastener 56 provided on the rotating shaft 54. The fastener 56 is pushed out by the compressed air or hydraulic oil injected through the inlet 53 and is in close contact with the spool 60. As the fastener 56 is brought into close contact with the spool 60, the spool 60 is fixed to the rotation shaft 54.

The fastener 56 is installed in the circumferential direction at least four or more at a predetermined angle on the rotary shaft 54. Preferably, the fastener 56 is made of a material of high friction such as rubber so as to be in close contact with the spool 60.

The rotation motor (not shown) rotates the rotation shaft 54 at a predetermined rotation speed.

Preferably, the rotary motor rotates the rotary shaft 54 so that the torque of the rotary shaft 54 is 7-15 kgcm when the thickness of the copper foil 14 is 15-35 μm. When the torque is less than 7kgcm, the winding is not made from the inside of the copper foil 14, that is, the spool adjacent portion, and the winding is started from the middle or the outermost layer. In addition, when the torque exceeds 15 kgcm, partial stretching occurs at a specific portion of the copper foil 14. Due to such stretching, the copper foil 14 may not be used.

When the rotary shaft 54 is rotated by the rotary motor, the copper foil 14 wound on the spool 60 is tightly wound from the inside thereof, that is, the portion adjacent to the spool 60. That is, as shown in FIG. 8, the copper foil roll which has a smooth side surface can be obtained.

Then, an operation process of the rewinding apparatus 100 of the copper foil according to the preferred embodiment of the present invention will be described. Explaining the operation of the rewinding apparatus 100 may also describe a method of rewinding the copper foil using the rewinding apparatus 100. The rewinding apparatus 100 winds up again tightly while preventing the weeping, loosening, or tearing of the electrolytic copper foil wound loosely on the spool 60 after being slit by the wide slitter.

First, the spool 60 in which the copper foil 14 was loosely wound on the outer circumferential surface is installed on the rotary shaft 54. The rotary shaft 54 is inserted into the hollow portion 62 of the spool 60.

Next, the spool 60 is fixed to the rotation shaft 54 using the fixing means 55. That is, the fastener 56 is pushed out by the compressed air or the hydraulic oil injected through the injection port 57 to be in close contact with the spool 60.

After the spool 60 is fixed to the rotary shaft 54, the rotary shaft 54 is rotated in the direction opposite to the direction in which the copper foil 14 is wound, that is, in the direction of the arrow, using the rotary motor. It is preferable that the rotating shaft 54 is rotated so that the torque may become 7-15 kgcm.

When the rotating shaft 54 is rotated, the copper foil 14 loosely wound on the spool 60 is tightly wound from the inside, that is, the portion adjacent to the spool 60 by inertia.

As mentioned above, the rewinding apparatus and method of the copper foil which concerns on this invention have the following effects.

First, the use of existing wide slitters can reduce equipment investment costs.

Second, the copper foil can be rewound tightly while preventing the crying, loosening, or tearing of the copper foil.

Claims (5)

delete plate; A rotating shaft rotatably installed on the plate and inserted into the hollow portion of the spool; Fixing means provided on the rotating shaft to fix the spool to the rotating shaft; And A rotary motor for rotating the rotary shaft, wherein the copper foil loosely wound on the spool by the rotation of the rotary shaft is densely rewound; The fixing means has a fastener installed inside the rotary shaft, the fastener is pushed out of the rotary shaft by hydraulic or pneumatic pressure to be in close contact with the spool to secure the spool to the rotating shaft, characterized in that the copper foil. The method of claim 2, The fastener is rewinding device of the copper foil, characterized in that at least four or more installed on the rotating shaft at a predetermined angle. Installing a spool in which a hollow part is formed along a longitudinal direction and a copper foil is loosely wound on an outer circumferential surface thereof so that the rotating shaft is inserted into the hollow part; Fixing the spool to a rotating shaft; And And rewinding the copper foil densely by rotating the rotating shaft in a direction opposite to the direction in which the copper foil is wound. The method of claim 4, wherein Rewinding method of the copper foil, characterized in that the torque of the rotating shaft at the time of rotation of the rotating shaft is 7 to 15 kgcm.

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