JPH08238735A - Laminating method for metal laminate - Google Patents

Abstract

PURPOSE: To provide a method for laminating a metal laminate in which a film and a metal plate can be laminated at a predetermined position by a simple operation. CONSTITUTION: The method for laminating a metal laminate comprises the steps of detecting the edge of a metal plate 11 supplied to a laminating roll 13 to sense the zigzag movement of a metal plate 11, and rotating the roll 13 reversely to the zigzag direction of the plate 11 with the roll center C of the rolling 13 as a center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for laminating a metal laminate, and more particularly to a method for laminating a metal laminate, which comprises pressing and laminating a thermoplastic resin film on at least one side of a metal plate. The present invention relates to a method for laminating a metal laminated body capable of suppressing the occurrence of a defective appearance such as lack of a film during laminating and improving the yield.

[0002]

2. Description of the Related Art A metal laminate in which a thermoplastic resin film is laminated on one side or both sides of a metal plate in order to impart electrical insulation, rust prevention, decoration, chemical resistance, etc. to the metal plate. The body is known. This metal laminate is used in building materials, interior materials, etc. as it is in a plate shape, bent to various cases and chassis, and subjected to drawing processing to various cases such as capacitor cases, beverage cans, drug containers, etc. There is.

As shown in the schematic view of the apparatus in FIG. 5, the above-mentioned metal laminate is heated at a high temperature, usually at a melting point of the film 1 or higher, with a thermoplastic resin film (hereinafter, simply referred to as a film) 1 formed in advance. It is manufactured by a method in which the metal plate 2 is supplied between the pair of laminating rolls 3a and 3b and the both are pressure bonded.

However, in the above method for laminating the metal laminated body,
Due to the meandering of the supplied metal plate 2 or the like, the film 1 and the metal plate 2 may be displaced, and a state in which the film 1 is not laminated on a part of the metal plate 2, that is, a film lack may occur.
The width of the film 1 is made larger than the width of the metal plate 2 in order to suppress the occurrence of the film lack, but in order to completely prevent the film lack, the width of the film 1 must be made considerably large. Of course, the loss of the film 1 increases and the manufacturing cost is greatly affected.

Further, the film 1 and the metal plate 2 are displaced from each other,
The metal plate 2 does not have the film 1 interposed and the laminating roll 3a
When it was directly contacted with, the surface of the laminating roll 3a was scratched by the edge of the metal plate 2 and transferred to the film 1, which sometimes impaired the appearance of the metal laminate.

Therefore, usually, the method of controlling the position of the film 1 to be laminated while detecting the edge of the metal plate 2, or conversely, the method of detecting the edge of the film 1 and controlling the position of the metal plate 2. Either is adopted.

However, the method of controlling the positions of the film 1 and the metal plate 2 requires a separate control device when the number of films is large, and the equipment becomes large-scaled, so that the work space, equipment management, etc. I had a problem with.

[0008] Therefore, an object of the present invention is to provide a method for laminating a metal laminated body, which is capable of laminating a film and a metal plate at a fixed position by a simple operation.

[0009]

In order to achieve the above object, a method for laminating a metal laminate of the present invention comprises a thermoplastic resin film formed in advance and a metal plate heated to a predetermined temperature between lamination rolls. In the method for producing a metal laminate in which both are continuously supplied by pressure bonding to each other, the laminate roll is detected while detecting the meandering of the metal plate by detecting the edge of the metal plate supplied to the laminate roll,
It is characterized in that the laminating roll is rotated in the in-plane direction of the metal plate in a direction opposite to the meandering direction of the metal plate around the roll center.

[0010]

[Operation] If the laminating roll is rotated in the direction opposite to the meandering direction of the metal plate when the metal plate meanders, a force is generated in the laminating roll to return the metal plate to its original position, and the film is also laminated. Since they move together with the rolls, they can be laminated at a fixed position even if the metal plates meander. As a result, it is possible to prevent a defective appearance due to lack of a film or damage to the laminating roll.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail based on an embodiment shown in the drawings. FIG. 1 is a schematic plan view for explaining the present invention, FIG. 2 is a plan view showing an embodiment of a laminating apparatus to which the present invention is applied, FIG. 3 is a front view of the same, and FIG. 4 is a roll holding a laminating roll. It is a perspective view which shows the outline of a holding stand.

First, the metal laminate which is the object of the present invention is
A thermoplastic resin film formed in advance is laminated on at least one surface of a metal plate. The metal plate is not particularly limited, but for example, aluminum, iron,
It is a plate material such as steel or copper, and various surface treatments according to the material for improving the adhesiveness of the film on its surface, for example, chemical conversion treatments such as chromate treatment, titanate treatment, zirconium treatment, and electric field etching. A material that has been subjected to a physical treatment is used, and normally, a material that is wound into a coil is used while being unwound.

The film laminated on the metal plate is not particularly limited, but as a general film, polyamide such as 6-nylon, 66-nylon, 6-66 copolymer nylon, polyester such as polyethylene terephthalate, etc. Polyolefin such as polypropylene can be used.

Further, the metal plate and the film are laminated.
As a laminating roll for pressure bonding, a combination of a metal roll and an elastic roll having a surface formed of heat resistant rubber or the like is generally used, and the same laminating roll can be used in the present invention.

The present invention is a conventional method for laminating a metal laminated body as described above, and as shown in FIG. 1, the metal plate 11 is detected by detecting the edge of the metal plate 11 with a detector 12. Is detected and the laminating roll 13 is rotated according to the meandering direction of the metal plate 11 as shown by an imaginary line.

The laminating roll 13 is formed so that the rotating shaft 14 of the laminating roll 13 rotates about a roll center C of the laminating roll 13 in a plane parallel to the surface of the metal plate 11. 1
The rotation direction of 3 is set in the direction opposite to the meandering direction of the metal plate 11, and for example, when the metal plate 11 meanders upward as shown by an arrow A in FIG. , Rotate clockwise as indicated by arrow B.

The rotation angle of the laminating roll 13 at this time is usually 5 in both directions, although it depends on the conditions such as the width dimension.
The degree is appropriate, and wrinkles may be formed on the film when the turning angle is increased. Therefore, it may be set within an appropriate range in consideration of the meandering correction effect and the state of wrinkles. Further, as a drive source for rotating the laminating roll 13, it is possible to use an arbitrary drive source such as a hydraulic pressure or an electric motor. Further, as the detector 12 for detecting the edge of the metal plate 11, a contact type such as a photoelectric tube or a contact type can be arbitrarily used, and the material of the metal plate 11, the supply speed, etc. can be used. An appropriate one can be selected according to

2 and 3 show an example in which the present invention is applied to a laminating apparatus for laminating films 15 on both sides of a metal plate 11. This laminating apparatus holds a pair of upper and lower laminating rolls 13 in a rotatable manner, and unwinds a film 15 and a guide roll 17
A roll holder 19 that integrally holds the backup roller 18 and a roll holder 19, and a controller 20 that rotates the roll holder 19 in a predetermined direction by a predetermined angle.

The roll holding table 19 is rotatably provided with respect to the pedestal 21, and its rotation center axis passes through the roll center C of the laminating roll 13 and
It is set to be orthogonal to the surface of the metal plate 11. A hydraulic cylinder 22 is connected to the roll holder 19 as a drive source for rotating the laminating roll 13 in a predetermined direction via the roll holder 19.

The control unit 20 calculates the detector 12 for detecting the edge of the metal plate 11 and the meandering condition of the metal plate 11 from the detection result of the detector 12, and the laminate roll is based on the obtained meandering condition. It is provided with a computing means 23 for calculating the rotation angle of 13 and a hydraulic controller 24 for controlling the hydraulic pressure supplied to the cylinder 22 based on a signal from the computing means 23.

The metal plate 11 is heated by a heating device (not shown) to a predetermined temperature, usually higher than the melting point of the film 15 and supplied to the laminating device, and the lamination roll 13 is pressure-laminated with the film 15 supplied from the unwinding roll 16. To be done.

When the metal plate 11 is meandered due to the fluctuation of the thickness of the metal plate 11 or the driving fluctuation of the conveying device, the detector 12 detects the position change of the edge, and the arithmetic means 23 changes the position. The rotation direction and the rotation angle of the laminating roll 13 are calculated based on the direction, speed, and the like, and a signal is output to the hydraulic controller 24 based on the calculation result. The hydraulic controller 24 supplies the hydraulic pressure based on the signal from the computing means 23 to the cylinder 22 to move the laminating roll 13 in a predetermined direction via the roll holding base 19, that is, in the direction opposite to the meandering direction of the metal plate 11. Rotate.

As described above, when the laminating roll 13 is rotated in the direction opposite to the meandering direction of the metal plate 11, the metal plate 11 is rotated.
Since the laminating roll 13 is inclined with respect to the supply direction of the sheet metal, the metal plate 11 is moved in the direction opposite to the laminating roll 13 inclining direction, that is, the meandering direction, and returned to a predetermined position. On the other hand, since the film 15 moves together with the rotation of the laminating roll 13, its center position does not change.

Therefore, even if the metal plate 11 meanders, it is possible to keep the metal plate 11 and the film 15 in a constant state by returning the metal plate 11 to a predetermined position by rotating the laminating roll 13. It is possible to carry out pressure-bonding lamination at a fixed position, and it is possible to prevent the occurrence of product defects such as lack of film and transfer scratches on the laminating roll.

In the above embodiment, various rolls such as the laminating roll 13 and the unwinding roll 16 are integrally held by the roll holding base 19, but as shown in FIG. 4, only the laminating roll 13 is held. Alternatively, both laminating rolls 13 may be held separately and controlled.

[0026]

As described above, according to the method for laminating a metal laminate of the present invention, the laminating roll is rotated in a predetermined direction in accordance with the meandering direction of the metal plate. Can be put back in place by
The metal plate and the film can be pressure-bonded and laminated at a fixed position. As a result, it is possible to prevent the occurrence of product defects such as lack of a film and transfer scratches on the laminating roll to improve the yield, and to significantly reduce the manufacturing cost by minimizing the film width. Further, since it can be carried out only by rotating the laminating roll, problems such as work space and facility management can be solved.

[Brief description of drawings]

FIG. 1 is a schematic plan view for explaining the present invention.

FIG. 2 is a plan view showing an embodiment of a laminating apparatus to which the present invention is applied.

FIG. 3 is a front view of the same.

FIG. 4 is a perspective view showing an outline of a holding table for the laminating roll.

FIG. 5 is a schematic view showing an example of a metal laminated body manufacturing apparatus.

[Explanation of symbols]

11 ... Metal plate, 12 ... Detector, 13 ... Laminating roll, 14 ... Rotating shaft, 15 ... Film, 16 ... Unwinding roll, 19 ... Roll holding base, 20 ... Control part, 22 ... Hydraulic cylinder, 23 ... Computing means , 24 ... Hydraulic controller, C ... Roll center

Claims (1)

[Claims] 1. A method for producing a metal laminate in which a thermoplastic resin film formed in advance and a metal plate heated to a predetermined temperature are continuously supplied between lamination rolls to bond the two by pressure bonding, and the laminate is obtained. While detecting the edge of the metal plate supplied to the roll and detecting the meandering of the metal plate, the laminate roll is moved in a direction opposite to the meandering direction of the metal plate with the roll center of the laminate roll as the center. A method for laminating a metal laminate, which comprises rotating the metal laminate in the in-plane direction.