Severing by tearing or breaking – Breaking or tearing apparatus – Combined with preliminary weakener or with nonbreaking cutter
Patent
1993-10-21
1995-05-09
Rada, Rinaldi I.
Severing by tearing or breaking
Breaking or tearing apparatus
Combined with preliminary weakener or with nonbreaking cutter
225 97, 225103, C03B 33033
Patent
active
054132630
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an apparatus suitable for breaking unshaped plate glass, e.g., to form a glass pane for an automobile.
BACKGROUND ART
Currently, glass panes applied to automobiles have increased thickness, for example, have a thickness of five to six millimeters.
In a conventional apparatus for breaking plate glass, plate glass on which a cutting line is formed is placed on a template by a belt, and pressed to be broken forcibly by an end cutter or pressing device. However, when the plate glass is thick as described above, a sufficient crack is not developed or does not advance although the cutting line is provided on the glass by means of stronger cutter pressure. In the forcible breaking by the above conventional breaking apparatus, the glass may not be accurately broken along the cutting line, but may be chipped, or sometimes cracked. In such case, these deficiencies cannot be cured even if the polishing work or other works are performed in the following processes.
In view of the above, it is an object of the present invention to provide an apparatus for breaking plate glass which makes cracks in the glass and then breaks the glass, even if the glass in which a crack is not sufficiently developed is supplied to the apparatus.
Another object of the present invention is to provide an apparatus for breaking glass plate which eliminates the use of a template required by conventional apparatus for breaking glass.
DISCLOSURE OF THE INVENTION
According to the present invention, the above objects are achieved by an apparatus for breaking plate glass, comprising a belt conveyor including a belt for conveying plate glass placed thereon, a breaking mechanism disposed above the belt for pressing the plate glass-and thereby-breaking the same along a cutting line formed on the plate glass placed on the belt, first moving means for moving the breaking mechanism relative to the plate glass in a plane parallel to the plate glass on the belt, a lifter provided above the belt for lifting the plate glass which is on the belt, a supporting base for supporting the plate glass on the belt through the belt, a movable glass support disposed under the belt for supporting the plate glass through the belt, a movable crack developing device disposed under the belt for developing a crack in the cutting line of the plate glass through the belt, second moving means for moving the glass support and the crack developing device in a plane parallel to the surface of the-plate glass to position the glass support and the crack developing device in registration with the breaking mechanism moved by the first moving means.
In one embodiment, the breaking mechanism according to the present invention comprises an end cutter for forming a cutting line for an end cutting on the plate glass which is on the belt and a press device for pressing the plate glass in the vicinity of a portion of the plate glass on which the cutting line is formed to thereby break that portion of the glass formed with the cutting line.
The present invention is also applicable to apparatus for breaking additional kinds of plate glass, for example, table top glass, and is not limited to the glass panes for use in automobiles.
The apparatus for breaking plate glass according to the present invention are preferably arranged such that the breaking operation and conveyance of the plate glass are performed by the numerical control system.
The present invention will be described hereinafter in more detail with respect to the embodiments thereof shown in the drawings. By this description, the above invention and its advantages as well as other inventions and their advantages will be clarified.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a front view of a breaking apparatus according to the present invention: and
FIG. 2 is a plan view of the breaking apparatus shown in FIG. 1.
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIGS. 1 and 2, a first motor 4 is secured to a frame 3 above a conveyor belt 20 of belt conveyor 2 on whi
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Bando Kiko Co., Ltd.
Dexter Clark F.
Rada Rinaldi I.
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