摘要:
The present invention is directed to an apparatus for grinding or polishing at least one edge of a glass substrate. The apparatus includes a grinding unit configured to remove a predetermined amount of material from the edge when in an aligned position. The grinding unit applies a predetermined force normal to the edge. An air bearing slide system is coupled to the grinding unit. The air bearing slide system is configured to slide along a predetermined axis on a thin film of pressurized air that provides a zero friction load bearing interface. A linear actuation motor is coupled to the air bearing slide system. The linear actuation motor is configured to control the movement of the air bearing slide system such that the grinding unit is moved from a non-aligned position to the aligned position.
摘要:
A glass treatment apparatus, in one example, can include a fluid dispensing device configured to dispense a substantially laminar flow of a fluid film. In another example, a shroud substantially circumscribes an outer peripheral surface of a working wheel. The shroud includes a slot configured to receive an edge portion of a glass sheet. Methods of treating glass, in one example, include the step of dispensing a substantially laminar flow of a fluid film along a fluid plane to subsequently land on a first side of a glass sheet. In further examples, a fluid is passed over an inner surface of a shroud to carry away machined particles from a glass sheet. In still further examples, an outer peripheral surface of a working wheel is impacted with a fluid stream to clean the working wheel from glass particles generated when machining an edge of the glass sheet.
摘要:
An apparatus for edge processing of a glass sheet, the apparatus including a shroud, a finishing member and a wiping device. The finishing member is substantially enclosed by the shroud. The apparatus uses pressurized air emitted by at least one slot in the wiping device to prevent contaminants resulting from the edge processing from settling on and/or adhering to surfaces of the glass sheet. The wiping device may include a jet of washing fluid directed at the glass sheet to further wash the surfaces and the processed edge of the glass sheet.
摘要:
A method for manipulating a glass sheet compound shape during a severing operation including, for example, positioning a scoring device against the first side of the central portion of the glass sheet, and temporarily bending an extended portion of the glass sheet located between the scoring device and a selected one of the edge portions from a first orientation to a severing orientation by applying a force to the extended portion of the glass sheet. In one example, the force can be applied to achieve a predetermined surface stress in the glass sheet. The method can further include forming a score line along the first side of the central portion of the glass sheet while the force is being applied to the extended portion, and breaking away the selected one of the edge portions from the glass sheet along the score line.
摘要:
A spray nozzle is used in a process of quenching a hot glass sheet during a laser scoring process or other high energy glass heating process. The scoring is conducted by a high energy means such as a laser. The nozzle is located in proximity to the glass sheet, creating gas in liquid used to quench the glass located in the nozzle (e.g., water). The gas (e.g., air bubbles) is removed from the quenching liquid. Then, the spray nozzle is used to spray the quenching liquid onto the sheet at a location trailing laser scoring of the sheet, such as using a traveling anvil machine at the bottom of the draw. The spray nozzle (purge nozzle) has a purge opening and tubing leading to a discharge location. The purge nozzle can have a sloped passageway that pre-stages gas bubbles near the purge opening in the nozzle. The spray nozzle can include a cooling coil passing around the nozzle passageway that enables a coolant to travel along the coil. This cools the quenching liquid passing through the nozzle, and increases the solubility of bubbles in the quenching liquid in the nozzle. A gas filter can receive gas-rich quenching liquid from the pressurized quenching liquid source, remove gas from the liquid, and send gas-depleted quenching liquid to the spray nozzle.
摘要:
A glass sheet guidance system includes a guidance member (22) having a small contact area with the glass sheet (12) and being taut to provide guidance to the glass sheet. In order to provide consistent guidance, even in environments where there is a large change in temperature, the guidance member is held taut by a tension member (24). The guidance member is supported by holders (10) so that, while remaining taut, the guidance member can be moved in three dimensions so as to accommodate glass sheets having different widths (1), heights (2), and thicknesses (3). Also, there is provided a method of guiding glass sheets with the guidance system.
摘要:
The present invention is directed to an apparatus for grinding or polishing at least one edge of a glass substrate. The apparatus includes a grinding unit configured to remove a predetermined amount of material from the edge when in an aligned position. The grinding unit applies a predetermined force normal to the edge. An air bearing slide system is coupled to the grinding unit. The air bearing slide system is configured to slide along a predetermined axis on a thin film of pressurized air that provides a zero friction load bearing interface. A linear actuation motor is coupled to the air bearing slide system. The linear actuation motor is configured to control the movement of the air bearing slide system such that the grinding unit is moved from a non-aligned position to the aligned position.
摘要:
An apparatus for edge processing of a glass sheet, the apparatus including a shroud, a finishing member and a wiping device. The finishing member is substantially enclosed by the shroud. The apparatus uses pressurized air emitted by at least one slot in the wiping device to prevent contaminants resulting from the edge processing from settling on and/or adhering to surfaces of the glass sheet. The wiping device may include a jet of washing fluid directed at the glass sheet to further wash the surfaces and the processed edge of the glass sheet.
摘要:
A method for edge finishing glass sheets. Glass sheets are separated into desired sizes, after which the edges of the glass sheets are finished using first grinding wheels to grind the edges, followed by polishing wheels to round off the ground edges by contacting and moving the edges of the glass sheet against stationary rotating grinding and polishing wheels which are each oriented approximately parallel to the major surface of the glass sheet.
摘要:
A method for finishing an edge of a glass sheet comprising a first grinding step and a second polishing step using different abrasive wheels. The method results in consistent finished edge quality and improved edge quality in term of sub-surface damage (SSD). The method can be advantageously utilized to finish the edges of a thin glass substrate for use as substrates of display devices, such as LCD displays and the like.