Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-06-27
1996-11-26
Sells, James
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 85, 1562735, 1562737, 1562755, 1562757, 156290, 1563798, 1563809, 156516, 156522, 264405, 4251744, B44C 302
Patent
active
055781551
DESCRIPTION:
BRIEF SUMMARY
INDUSTRIAL FIELD
The present invention relates to a method of forming a three-dimensional object through a sheet laminating process, and also to an apparatus for the same.
PRIOR ART
Apparatus for forming a three-dimensional object of a complicated shape have been disclosed in U.S. Pat. Nos. 4,961,154 and 5,031,120 by Pomerantz et al.
However, the kinds of materials that can be used in the conventional apparatus are limited, and it is impossible to form a three-dimensional object by laminating sheets of a desirable material.
An object of the present invention is accordingly to provide a method of forming a three-dimensional object with various kinds of sheet materials and an apparatus for the same.
DISCLOSURE OF THE INVENTION
The present invention is directed to a method of forming a three-dimensional object by laminating sheet members, comprising the steps of: (A) preparing a first sheet member, which is cut into an effective area constituting the three-dimensional object and a non-required area not constituting the three-dimensional object; (B) feeding a second sheet member above the first sheet member while interposing a non-solid adhesive layer between the first and second sheet members, the adhesive layer being formed in at least part of an area which is included in both of the effective area of the first sheet member and an effective area of the second sheet member; (C) attaching the first and second sheet members with each other by the adhesive layer; (D) cutting the second sheet member into the effective area and a non-required area; and (E) successively laminating sheet members through repetition of the steps (B) through (D) to form the three-dimensional object.
Through the steps (B) and (C), the effective areas of the first and second sheet members are attached with each other by an adhesive. In the subsequent step (D) where the second sheet member is cut into the effective area and a non-required area, the effective area of the second sheet member is separated from the non-required area of the second sheet member while being attached with the effective area of the first sheet member. A three-dimensional object constituted by laminating the effective areas can thus be produced by repeating the above steps.
Preferably, the adhesive is a powdery adhesive, and the step (B) comprises a step of depositing the powdery adhesive onto at least one of opposed surfaces of the first and second sheet members.
According to a preferred embodiment, the step (C) comprises a step of heating and pressing down the first and second sheet members by heating-pressing means to melt the powdery adhesive, thereby attaching the first and second sheet members with each other by the powdery adhesive.
The present invention is also directed to an apparatus for forming a three-dimensional object by laminating sheet members, comprising: a table vertically movable for holding a laminated object formed by laminating sheet members, each sheet member being cut into an effective area constituting the three-dimensional object and a non-required area not constituting the three-dimensional object; deposition means for depositing a powdery adhesive onto at least one of an upper surface of a first sheet member positioned uppermost on the laminated object and a lower surface of a second sheet member to be laminated on the first sheet member, the powdery adhesive being deposited in at least part of an area included in both of an effective area of the first sheet member and an effective area of the second sheet member; sheet feeding means for feeding and placing the second sheet member of a predetermined length onto the first sheet member; attaching means for attaching the first and second sheet members with each other by the powdery adhesive at least by applying a pressure onto the second sheet member; and cutting means for cutting the second sheet member into the effective area and a non-required area.
Preferably, the first and second sheet members are paper sheets which are cut in advance by the predetermined length.
According to a
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Sanyo Machine Works, Ltd.
Sells James
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