Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Reexamination Certificate
1999-04-20
2001-04-24
Mayes, Curtis (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
C156S235000, C156S510000, C156S538000, C156S539000, C156S556000
Reexamination Certificate
active
06220331
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method and a device for attaching an adhesive tape onto variously shaped members to be attached, and particularly to a method and a device for attaching an adhesive tape such as masking tape and the like onto a plate-like body such as a bent vehicle window glass or the like automatically when painting, coating, chemical treatment or the like is given to the surface of the plate-like body.
2. Description of the Related Art
Conventionally, a wide variety of methods or devices for automatically attaching an adhesive tape to a member to be attached have been known. Particularly, various methods or devices for attaching masking tapes onto surfaces of flat plate-like members such as substrates, or labeling machines for attaching labels to curved surfaces of bottles, cans, etc., are known.
For example, JP-B-53-43794 discloses a labeling machine for attaching labels onto bottles or the like. The labeling machine includes a labeling mechanism constituted by absorption drums for absorbing labels from a label holder and an attaching drum for absorbing labels and pressing the labels onto side surface of bottles or the like. In the labeling machine, the absorption drums are disposed apart from the attaching drum, each of the absorption drums being provided with a receiving frame for receiving a label on the attaching drum side and in a position along the traveling direction of the attaching drum, and further provided with a member for pressing the label in the receiving frame onto the side surface of the attaching drum.
Further, as for the machine for attaching masking tape to a printed board, JP-U-5-69014 discloses a masking tape attaching machine. This machine includes a tape support portion for rotatably supporting a roll-like masking tape, two tape pressing rollers disposed side by side in the tape-attaching direction so as to be able to individually move up and down and to press the fed masking tape onto the printed board, a cutter disposed between the two tape pressing rollers for cutting the tape in the state where the tape pressing roller on the tape support portion side is in the moving-up position while the other tape pressing roller is pressing the masking tape, and a moving means for moving the tape support portion, the tape pressing rollers and the cutter as a whole in the tape attaching direction.
The related art-type masking and tape attaching machines have a main function that attaches tapes continuously. Accordingly, they are not good at partial tape attaching. In addition, most of mechanisms of a tape feeding unit, a cutting unit, and an attaching unit are integrated and disposed continuously, so that the posture of tape attaching is limited.
On the other hand, the labeling machines have a main function that attaches labels partially, and supplied paper is limited to paper with peeling sheet. Accordingly, there was a problem that it is necessary to prepare supplied paper attached with labels having a required size or length in advance.
For example, the method disclosed in JP-B-53-43794 discloses a method for attaching a label onto a substantially cylindrical portion of a bottle, a can or the like, in which a label is absorbed onto an absorption drum so as to be delivered to an attaching drum, and paste is applied to the label absorbed on the attaching drum by a pasting drum. Thus, the label is attached to a bottle or the like. In such a manner, the number of times of delivery of a label among the drums is very large. Further, means for absorbing a label onto the drums uses a vacuum. Accordingly, there is a problem that the structure and the timing control are so complicated that it is difficult to apply the method to such a case where tape is attached onto opposite surfaces of a large-sized and curved plate-like body.
On the other hand, in the machine disclosed in the above JP-U-5-69014, masking tape is attached onto the flat surface of a printed board or the like. It is therefore difficult to apply the machine to a case of attaching tape onto opposite surfaces of a curved plate-like body.
SUMMARY OF THE INVENTION
The present invention is intended to solve the foregoing problems. That is, it is an object of the invention to provide an simple adhesive tape attaching method and device, in which tape-like pieces cut in advance can be attached to a desired position of a member to be attached, in which various required size pieces of tape can be fed sequentially without using any peeling sheet, and in which adhesive tape pieces can be attached to various desired positions without being limited in its attaching posture and without causing bubbles or wrinkles when the tape pieces are attached onto the member to be attached.
In order to achieve the above object, according to an aspect of the present invention, there is provided a method for attaching an adhesive tape includes the steps of, disposing the adhesive tape having an adhesive surface on a support body with the adhesive surface down, rolling an attaching roller having adhesive strength on the other not-adhesive surface of the adhesive tape so that the adhesive tape is transferred onto the attaching roller and is come into tight contact therewith, and rolling the attaching roller on a surface of a member to be attached which is located in a predetermined position so that the adhesive tape adhered to the attaching roller is attached onto the surface of the member. Respective adhesive strengths A, B and C are set to have a relation of A<B<C, where A designates adhesive strength between the adhesive surface of the adhesive tape and the support body, B designates adhesive strength between the not-adhesive surface of the adhesive tape and the attaching roller, and C designates adhesive strength between the adhesive surface of the adhesive tape and the member to be attached.
According to another aspect of the present invention, there is provided a device for attaching an adhesive tape including, a tape cutting unit for cutting a roll-like adhesive tape into adhesive tape pieces, a tape feeding unit including a conveyor belt for conveying the adhesive tape pieces disposed thereon with their adhesive surfaces down so as to be in contact with the conveyor belt, an attaching roller having enough adhesive strength to press not-adhesive surfaces of the adhesive tape pieces arranged on the conveyor belt so that the adhesive tape pieces are transferred to come into tight contact with the attaching roller, and a robot for making the attaching roller movable and rotatable along X, Y, Z and &thgr; axes.
REFERENCES:
patent: 3625799 (1971-12-01), Way
patent: 3654038 (1972-04-01), Hottendorf
patent: 3765992 (1973-10-01), Stageberg
patent: 3892618 (1975-07-01), Griebat
patent: 3895989 (1975-07-01), Lucas
patent: 3963557 (1976-06-01), Patterson
patent: 4003780 (1977-01-01), Cohn
patent: 4181559 (1980-01-01), Hudson
patent: 4317694 (1982-03-01), Fuchs et al.
patent: 4925521 (1990-05-01), Asbury, Jr. et al.
patent: 5429576 (1995-07-01), Doderer-Winkler
patent: 5779830 (1998-07-01), Wakefield et al.
patent: 6022443 (2000-02-01), Rajala et al.
patent: 53-43794 (1978-11-01), None
patent: 5-69014 (1993-09-01), None
Kameda Nagahisa
Matsuda Naohiko
Toyoda Takanori
Central Glass Co. Ltd.
Mayes Curtis
Pillsbury & Winthrop LLP
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