# US 2018/0044220 A1 · Method of cutting out glass plate and positioning cut-out glass plate and apparatus thereof

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- Number: US 2018/0044220 A1
- Document ID: US20180044220A1
- Status: Published application
- Kind: A1
- Application number: 15/549,654
- Filed: 2016-05-26
- Published: 2018-02-15
- Earliest claimed: 2015-06-10
- Assignees: Bando Kiko Co., Ltd.
- Applicants: Bando Kiko Co., Ltd.
- Inventors: Kazuaki BANDO
- Web page: https://patentgrep.com/patent/US20180044220A1

## CPC

- C03B 33/03: Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations
- B28D 1/22: by cutting, e.g. incising
- B28D 5/023: {with a cutting blade mounted on a carriage}
- B65G 49/064: {in a horizontal position (B65G49/066 takes precedence)}
- C03B 33/027: Scoring tool holders; Driving mechanisms therefor
- C03B 33/037: Controlling or regulating
- G05B 19/401: characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes (G05B19/19 takes precedence)
- G05B 19/40932: {Shape input}
- B65G 2249/04: Arrangements of vacuum systems or suction cups
- B65G 2249/045: Details of suction cups suction cups
- G05B 2219/50033: Align tool, tip with a calibration mask
- C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- B28D: WORKING STONE OR STONE-LIKE MATERIALS
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

A cut-out glass plate positioning apparatus includes: a cut line forming device 4 provided in a cut line forming position 4a; a bend-breaking and separating device 6 for cutting out unworked plate glasses 5 from an unworked plate glass 2 along the cut lines 3; a pair of position and angle correcting devices 8 for effecting correction of the position and angle with respect to the unworked plate glass 5; a pair of sucking and transporting devices 9 for suckingly lifting and transporting the unworked plate glass 5 to each position and angle correcting device 8; and two CCD cameras 10 respectively installed above the position and angle correcting devices 8.

## Claims

### Claim 1

A method of cutting out a glass plate and positioning the cut-out glass plate, comprising the steps of:
forming cut lines on an unworked plate glass with a preset work coordinate system in a cut line forming position with respect to the unworked plate glass;
applying an alignment mark onto at least two locations set in advance in the work coordinate system on each of a plurality of glass plates to be cut out from the unworked plate glass, before forming the plurality of cut-out glass plates cut out from the unworked plate glass along the cut lines;
detecting the position of an actual alignment mark on the cut-out glass plate by performing imaging and image processing of the alignment mark with a camera installed by setting as a reference position a coordinate value of the alignment mark set in the work coordinate system, in a positioning position for positioning the glass plate with the alignment mark applied thereto and cut out;
calculating an amount of positional deviation between the position of the actual alignment mark and the reference position; and
correcting a position and an angle of the cut-out glass plate on the basis of the amount of positional deviation.

### Claim 2

A method of cutting out a glass plate and positioning the cut-out glass plate, comprising the steps of:
forming cut lines on an unworked plate glass with a scribe head by moving the scribe head under numerical control along a glass plate surface of the unworked plate glass in an X-Y coordinate plane in a preset work coordinate system;
applying an alignment mark onto at least two locations set in the work coordinate system on each of a plurality of glass plates to be cut out from the unworked plate glass, before forming the plurality of cut-out glass plates cut out from the unworked plate glass along the cut lines;
detecting the position of an actual alignment mark on the cut-out glass plate by performing imaging and image processing of the alignment mark by a camera installed by setting as a reference position a coordinate value of the alignment mark set in the work coordinate system, in a positioning position for positioning the glass plate with the alignment mark applied thereto and cut out;
calculating an amount of positional deviation in an X-Y plane between the position of the actual alignment mark and the reference position; and
correcting a position and an angle of the cut-out glass plate in the X-Y plane on the basis of the amount of positional deviation.

### Claim 3

A method of cutting out a glass plate and positioning the cut-out glass plate, comprising the steps of:
forming cut lines on an unworked plate glass with a preset work coordinate system in a cut line forming position with respect to the unworked plate glass;
applying an alignment mark onto at least one location set in advance in the work coordinate system on each of a plurality of glass plates to be cut out from the unworked plate glass, before forming the plurality of cut-out glass plates cut out from the unworked plate glass along the cut lines;
detecting an actual alignment mark on the cut-out glass plate by performing imaging and image processing of the alignment mark with a camera installed by setting as a reference position a coordinate value of the alignment mark set in the work coordinate system, in a positioning position for positioning the glass plate with the alignment mark applied thereto and cut out; and
correcting a position and an angle of the cut-out glass plate on the basis of the position and form of the detected actual alignment mark and the reference position and the form of the applied alignment mark.

### Claim 4

An apparatus for effecting the cutting out of a glass plate and the positioning of the cut-out glass plate, comprising:
a cut line forming device having a scribe head which moves in an X-Y coordinate plane along a plate surface of an unworked plate glass so as to form cut lines on the unworked plate glass;
a mark imparting device which, before cutting out a cut-out glass plate from the unworked plate glass with the cut lines formed thereon by the scribe head, applies an alignment mark onto at least two locations in a region of the glass plate to be cut out;
a cutting-out device which cuts out the cut-out glass plate from the unworked plate glass along the cut lines formed by the cut line forming device;
a camera installed in a positioning position for positioning the cut-out glass plate cut out by the cutting-out device, by using as a reference position a mark coordinate value set in a work coordinate system set in the cut line forming device; and
a position and angle correcting device which detects a position of an actual alignment mark by performing image processing of the alignment mark imaged by the camera, and calculates an amount of positional deviation between the detected position of the actual alignment mark and the reference position of the alignment mark, to thereby correct the position and angle of the cut-out glass plate on the basis of the amount of positional deviation.

### Claim 5

An apparatus for effecting the cutting out of a glass plate and the positioning of the cut-out glass plate, comprising:
a cut line forming device having a scribe head which moves in an X-Y coordinate plane along a plate surface of an unworked plate glass so as to form cut lines on the unworked plate glass;
a mark imparting device which, before cutting out a cut-out glass plate from the unworked plate glass with the cut lines formed thereon by the scribe head, applies an alignment mark onto at least one location in a region of the glass plate to be cut out;
a cutting-out device which cuts out the cut-out glass plate from the unworked plate glass along the cut lines formed by the cut line forming device;
a camera installed in a positioning position for positioning the cut-out glass plate cut out by the cutting-out device, by using as a reference position a mark coordinate value specified in a work coordinate system set in the cut line forming device; and
a position and angle correcting device which detects a position of an actual alignment mark by performing image processing of the alignment mark imaged by the camera, and calculates an amount of positional deviation between the detected position of the actual alignment mark and the reference position of the alignment mark, to thereby correct the position and angle of the cut-out glass plate on the basis of the amount of positional deviation.