JP2006021849A - Device and method for conveying thin plateglass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveying device for improving the conveying efficiency of a thin plate glass in a means to convey the thin plate glass from one predetermined position to another predetermined position. <P>SOLUTION: In the conveying device 1 of a thin plate glass 2, the conveying device 1 comprises a holding pad 3 which holds the glass 2 and consists of an elastic member having the area larger than that of the glass, and a member 4 to separate the glass 2 from the holding pad 3 while sucking the glass 2, and further comprises a mechanism to start separation of the held glass by blowing compressed gas from the diagonal direction with respect to the holding pad 3 on a corner part of the held glass 2 on the holding pad side, and a mechanism 9 to blow liquid 10 in a space between the glass 2 and the holding pad 3 formed after starting separation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus and a transport method for transporting a thin glass sheet from a predetermined position to a predetermined position.

  In the means for transporting a thin glass from a predetermined position to a predetermined position, in order to improve the transport efficiency of the thin glass, in Patent Document 1, gas is blown to the end of the thin glass held by the porous resin pad. Thus, a conveying device having a mechanism for starting the peeling of the thin glass from the pad is disclosed. However, in order to efficiently convey a large area of thin glass, it is not sufficient and further improvement is required.

In Patent Document 2, in order to promote separation of the surface plate and the thin glass from the side by lifting the thin glass placed on the surface plate with the holding claw member provided with the transport table around the thin glass plate. A conveying device provided with a nozzle for blowing the gas is disclosed. However, since the edge portion of the thin glass is held by a nail or the like, there is a problem that the probability that the glass is broken increases and the corresponding area is limited due to the holding mechanism. Moreover, the spraying of the thin glass is not sufficient to blow the gas only by blowing the gas, and this is particularly remarkable for the thin glass in a wet state.
Japanese Unexamined Patent Publication No. 7-41169 JP 2000-128344 A

In recent years, display devices such as liquid crystal televisions and PDP televisions tend to have a large screen, and accordingly, plate glass as a glass substrate used for them tends to have a large area. These display devices are not only larger screens, weight reduction are required, even sheet glass to be used, the area is 0.6m ² ~1.4m ² mm, a thickness 0.1mm~0 Thin glass of about 7 mm has been used.

  The surface of the thin glass as described above is polished with a water-soluble abrasive, and a cleaning operation with water is performed in order to maintain the cleanliness of the glass surface. The thin glass plate after the polishing operation is transported to a predetermined place and loaded and stored. Large-area thin glass is easily damaged, and when the glass surface becomes wet due to polishing or the like, it is likely to be in close contact with a pedestal, member, etc., making handling even more difficult.

  An object of the present invention is to provide means for improving the efficiency of transporting thin glass when the thin glass is transported from a predetermined position to a predetermined position in, for example, a polishing process.

  In order to solve the above-mentioned problems, the present invention provides a sheet glass conveying apparatus. That is, the transport device of the present invention includes a holding pad made of an elastic member having an area larger than the glass area for holding the glass, and a material for peeling the glass from the holding pad while adsorbing the glass. A mechanism for initiating the peeling of the held glass by blowing gas compressed from an oblique direction to the holding pad on the holding pad side corner of the glass, the glass and the holding pad formed after the start of peeling And a mechanism for spraying liquid into the gap.

  The thin plate glass held by the holding pad is adsorbed with the material for peeling the glass from the holding pad while adsorbing the glass, and the material is used for peeling the thin glass with the material. Peeling of the held glass starts by spraying compressed gas from the diagonal direction against the holding pad to the holding pad side corner of the held glass while pulling it away from the holding pad. Is done. At this time, it is preferable that the material for blowing the compressed gas so that the gas can be reliably blown to the holding pad side corner of the glass is movable in the horizontal direction with respect to the holding pad.

  By reliably blowing the gas to the holding pad side corner of the glass, the gas is also blown to the holding pad which is an elastic member, the portion is deformed into a concave shape, and the glass and the holding pad are partially separated. And since the gas sprayed on the part deform | transformed into this concave shape reflects and presses the glass holding pad side, peeling from the glass holding pad is started.

  The material for spraying the compressed gas is preferably sprayed with a gas compressed at an angle of 20 ° to 40 ° with respect to the horizontal surface of the holding pad, so that the start work of peeling can be efficiently performed.

  After the start of peeling of the glass from the holding pad, the liquid is sprayed on the gap between the glass formed by peeling and the holding pad, thereby promoting the peeling of the glass from the holding pad. This liquid spraying is preferably performed from the horizontal direction with respect to the holding pad in order to facilitate the exfoliation of the glass. By promoting the peeling by spraying on the liquid, it is possible to cope with even a large area glass, and since it is sprayed by the liquid, it is possible to efficiently promote the peeling even when the glass is wet. Come to play.

  The sprayed liquid is preferably sprayed. By making the liquid into a spray state, the probability that the glass is broken can be lowered, and the amount of liquid used can be reduced.

  And, after spraying the liquid to the gap between the glass formed by peeling and the holding pad, by spraying a gas compressed in the horizontal direction against the holding pad, the location where the peeling of the glass began to start, Alternatively, it is preferable because it can be surely sent to a place where the start of peeling has not started. By having such means, there are effects such as easy separation from the holding pad even if the glass sheet has a large area.

  Since the thin glass conveying device and the conveying method of the present invention can efficiently peel off a wet glass state or a large area thin glass held by a member for conveyance or polishing from the agent, Improves transport efficiency and, in turn, improves the efficiency of manufacturing processes for liquid crystal televisions, PDP televisions, and the like.

  The thin glass conveying apparatus and conveying method of the present invention will be described with reference to the drawings. FIG. 1 shows a conveying apparatus 1 according to the present invention, in which a thin glass 2 is held by a holding pad 3 and a material (peeling material) 4 for peeling the glass from the holding pad while adsorbing the glass is adsorbed to the glass. Shows the state. The material that blows the compressed gas is disposed obliquely with respect to the holding pad 3, and this acts as a mechanism (peeling start mechanism) 5 that starts the peeling of the thin glass plate 2 from the holding pad 3. The peeling start mechanism 5 is preferably configured such that the material for blowing the compressed gas so as to blow the gas reliably on the holding pad side corner of the glass is movable in the horizontal direction with respect to the holding pad. .

  The holding pad 3 uses an elastic member, and an elastic member such as polyurethane, polystyrene, polypropylene, acrylonitrile / butadiene rubber / styrene, olefin, etc., particularly foamable plastics can be suitably used for the elastic member. The thickness of about 0.3 mm to 3 mm can be used. For holding the thin glass plate 2 on the holding pad 3, a known technique such as vacuum suction and adsorption with water interposed therebetween is appropriately used. The mechanism 5 only needs to be able to blow a gas such as compressed air, and typically, an injection pipe or the like is used.

  In order to adsorb the thin glass 2 to the thin glass 2 held by the holding pad 3 by means of vacuum suction or the like with the peeling tool material 4 and to peel the thin glass 2 with the tool 5, the peeling tool material 4 is used. While performing an operation such as pulling away from the holding pad 3 (for example, an operation of pulling the peeling tool material in the direction of a in FIG. 3), the peeling start mechanism 5 is inclined with respect to the horizontal plane of the holding pad 3, preferably Peeling of the held thin glass 2 is started by blowing the compressed gas at an angle of 20 ° to 40 °.

  The operation when the thin glass 2 starts to be peeled will be described in detail with reference to FIG. FIG. 2 shows details when the thin glass starts to peel. A thin plate in which the compressed gas 7 for reliably starting the peeling is sprayed on the corners of the holding pad side of the glass, whereby the gas 7 is also sprayed on the holding pad 3 which is an elastic member, and a concave deformed portion 8 is generated. The glass 2 and the holding pad 3 are partially separated. And since the gas sprayed on the deformation | transformation part 8 reflects and presses the holding pad side of glass, peeling from the holding pad of glass is started.

  After starting the peeling of the thin glass 2 from the holding pad 3, the glass 10 from the holding pad 3 is sprayed by spraying a liquid 10 such as water emitted from the peeling facilitating mechanism 9 into the gap between the glass formed by peeling and the holding pad. Peeling is promoted. The spraying of the liquid 10 is preferably performed in the horizontal direction with respect to the holding pad 3 in order to facilitate the exfoliation of the glass. The liquid 10 is preferably sprayed. By making the liquid into a spray state, the probability that the glass is broken can be lowered, and the amount of liquid used can be reduced.

  The separation facilitating mechanism 9 only needs to be capable of spraying a liquid such as water. Typically, an injection tube or the like is used, and a sprayable liquid is preferably sprayed. Alternatively, the wiping of the liquid may be performed in a linear shape, but it is preferable to spray the liquid in a wide-angle shape because the number of peeling assisting mechanisms 9 to be installed can be reduced.

  Then, after spraying a liquid into the gap between the glass formed by peeling and the holding pad, a mechanism (liquid pushing mechanism) 11 for spraying a compressed gas for extruding the liquid in a horizontal direction with respect to the holding pad 3 By spraying the compressed gas, it is preferable because the liquid can be surely sent to a location where the peeling of the glass starts or a location where the peeling has not started. By having such means, there are effects such as easy separation from the holding pad even if the glass sheet has a large area.

  The liquid extruding mechanism 11 only needs to be able to spray a compressed gas, and typically an injection pipe is used. The mechanism 11 is preferably a mechanism that can move to a gap formed as the peeling between the thin glass plate 2 and the holding pad 3 proceeds. If the mechanism is provided, the liquid push-out mechanism 11 can be brought close to a place where peeling is likely to occur as shown in FIG. Therefore, even in the case of a thin glass sheet having a large area, the liquid can be reliably sent to a location where the peeling of the glass starts or a location where the peeling has not started, and the thin plate from the holding pad 3 can be sent. Peeling of the glass 2 is efficient and preferable.

It is a cross-sectional schematic diagram showing the conveyance apparatus of the thin glass of this invention. It is explanatory drawing when peeling of the thin glass from a holding pad starts. It is the figure which showed the state when peeling of the thin glass from a holding pad is promoted by spraying of a liquid. It is the figure which showed the state when spraying the gas compressed after spraying the liquid between a holding pad and a sheet glass.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thin glass conveying apparatus 2 Thin glass 3 Holding pad 4 Peeling tool material 5 Peeling start mechanism 6 for blowing compressed gas Holding pad holder 7 Compressed gas for starting peeling of thin glass from holding pad 8 Deformed deformation part 9 formed by compressed gas 9 Peeling promotion mechanism 10 for spraying liquid 11 Sprayed gas 11 Sprayed compressed gas for extruding gas sprayed between thin glass and holding pad Mechanism for

Claims (7)

It is a thin glass conveyance device, and the conveyance device is made of an elastic member having an area larger than the glass area for holding the glass, and a material for peeling the glass from the holding pad while adsorbing the glass A mechanism for starting the peeling of the held glass by blowing gas compressed from an oblique direction to the holding pad on the holding pad side corner of the held glass, and the glass formed after the start of peeling A device for transporting thin glass, characterized in that it has a mechanism for spraying liquid into the gap between the substrate and the holding pad. 2. The apparatus for transporting thin glass according to claim 1, further comprising a mechanism for blowing a gas compressed from the horizontal direction of the holding pad into a gap between the glass formed after the start of peeling and the holding pad. The thin glass conveying device according to claim 1 or 2, wherein the liquid spraying mechanism is a spraying liquid spraying mechanism. Adsorb thin glass to the holding pad, hold the glass while adhering the glass with the material for peeling the glass from the holding pad while adsorbing the glass, and hold the operation to peel the thin glass with the material By blowing a gas compressed from an oblique direction to the holding pad on the holding pad side corner of the held glass, peeling of the held glass is started, and after the start of peeling, the gap between the glass and the holding pad formed is started. A method for transporting thin glass, comprising a step of peeling glass from the holding pad by spraying a liquid. The method for transporting thin glass according to claim 3, wherein after the liquid is sprayed, a gas compressed from the horizontal direction of the holding pad is sprayed into a gap between the glass formed after the start of peeling and the holding pad. The method for conveying a thin glass according to claim 4 or 5, wherein the liquid is sprayed. 7. The gas compressed at an angle of 20 ° to 40 ° with respect to the horizontal surface of the holding pad is sprayed to the holding pad side corner of the held glass. Thin glass transport method.

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