A heat chamfering method for a glass panel includes bringing a heater into contact with an edge of a glass panel by causing the heater to approach a chamfering start point. heat-chamfering the edge by moving the heater from the chamfering start point to a chamfering end point along a chamfering line. and bringing the heater into non-contact with the glass panel by causing the heater to depart from the chamfering end point. The heat-chamfering may include maintaining contact pressure between the heater moving along the chamfering line and the glass panel within a predetermined range of change. In the approaching. an angle defined by a chamfering start point approach line and the chamfering line at the chamfering start point ranges from 155 to 175. In the departure, an angle defined by the chamfering line and a chamfering end point departure line ranges from 155 to 175.

A method of manufacturing a glass sheet involves forming a scribe in one surface of a glass sheet having a rectangular shape on a periphery of an edge portion of the glass sheet in parallel to the edge portion, and cutting the glass sheet along the scribe as a boundary. The method includes forming the scribe in a region other than both end portions of the glass sheet in a direction along the edge portion; and cutting the glass sheet along a bending portion in which the glass sheet is locally bent, the bending portion being continuously formed in a state of being connected to the scribe and gradually protruding from an edge portion side to an inner side as being shifted away from the scribe.

A method and apparatus for scoring thin glass for the purpose of score and break separation as well as an accordingly prepared scored thin glass are provided. The scoring tool is pressed onto the thin glass and drawn along the scoring line with an adjusted scoring contact pressure force as a vertical scoring force component. This permits to production of prescored ultrathin glass of Knoop hardness from 350 to 650 with a score depth from 1/20 to of the material thickness.

A cutter head includes: a support platform; a double curved surface member mounted on the support platform and having a first curved surface and a second curved surface; a cutter wheel support member and a roller wheel support member moveably mounted on the support platform, respectively; a cutter wheel and a roller wheel mounted on the cutter wheel support member and the roller wheel support member, respectively; a first transmission mechanism mounted on the support platform, configured to be mated with the first curved surface, and connected to the cutter wheel support member, so as to transmit a movement of the double curved surface member to the cutter wheel; and a second transmission mechanism mounted on the support platform, configured to be mated with the second curved surface, and connected to the roller wheel support member, so as to transmit a movement of the double curved surface member to the roller wheel. The cutter head has a compact structure, and it improves the levelness of the cutter wheel and the roller wheel, and increases the mechanical precision.

A cutter edge is pressed against a brittle-material substrate so that a protruding portion of the cutter edge is positioned between a first edge of the brittle-material substrate and a side portion of the cutter edge and that a side portion of the cutter edge is positioned between the protruding portion of the cutter edge and a second edge of the brittle-material substrate. A scribe line is formed by a scratch between a first position closer to the first edge of the first and second edges and a second position closer to the second edge of the first and second edges. After the formation of the scribe line, a crack is extended in a thickness direction from the second position toward the first position along the scribe line, thus forming a crack line.

A scribing apparatus 1 includes a horizontal table 3 on which a glass plate 2 is placed and fixed under vacuum suction; a feed screw 5 and a Y-axis control motor 6 for moving the table 3 along a pair of guide rails 4 under scribe numerical control; a guide rail device body 7 installed above the table 3 along an X-axis direction; a carriage 8 mounted on the guide rail device body 7 so as to move in the X-axis direction while being guided; a feed screw and an X-axis control motor 9 for moving the carriage 8 in the X-axis direction under numerical control; and a scribe head 10 installed on the carriage 8.

The present invention provides a method for cutting a single sheet of glass substrate, which includes the following steps: (1) providing a single sheet of glass substrate (10) to be cut and a cutting platform (20); (2) fixing the single sheet of glass substrate (10) on the cutting platform (20); (3) rotating the cutting platform (20) to have the single sheet of glass substrate (10) located under the cutting platform (20); (4) providing a cutting head (30) under the cutting platform (20) to proceed with a cutting operation on the single sheet of glass substrate (10) and also providing a vacuum suction device (40) and a static electricity elimination device (50) to remove glass chips generated by the cutting head (30) cutting the single sheet of glass substrate (10); and (5) after the cutting operation, moving the cutting platform (20) away from the cutting head (30), the vacuum suction device (40), and the static electricity elimination device (50) and rotating the cutting platform (20) to have the cut single sheet of glass substrate (10) located above the cutting platform.

The present invention relates to a waste fluorescent light end-cutting device. The waste fluorescent light end-cutting device includes a conveyor transferring a waste fluorescent light, a heating wire disposed on each of both sides of the conveyor, a cooling wire subsequently disposed on a rear side of the heating wire, and a suction duct disposed between the cooling wire and the heating wire. A base cap is separated from the waste fluorescent light by using a temperature difference between the heating wire and the cooling wire.

The invention relates to a method for breaking out at least one part to be broken out, called a margin (12_1, 12_2, 12_3), from a glass sheet (10) bearing at least one cutting line (10_1, 10_2, 10_3) separating said at least one margin from an internal zone (13) of said glass sheet. Said method includes steps of: gripping (E10) the glass sheet only in the internal zone, so as to hold the glass sheet in a position in which vibrations are able to propagate at the surface of said internal zone until said at least one cutting line is reached, vibrating (E20) said internal zone.

A heat chamfering method for a glass panel includes bringing a heater into contact with an edge of a glass panel by causing the heater to approach a chamfering start point, heat-chamfering the edge by moving the heater from the chamfering start point to a chamfering end point along a chamfering line, and bringing the heater into non-contact with the glass panel by causing the heater to depart from the chamfering end point. The heat-chamfering may include maintaining contact pressure between the heater moving along the chamfering line and the glass panel within a predetermined range of change. In the approaching, an angle defined by a chamfering start point approach line and the chamfering line at the chamfering start point ranges from 155 to 175. In the departure, an angle defined by the chamfering line and a chamfering end point departure line ranges from 155 to 175.