JP2009102204A - Ear part cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform bending and splitting along the cut line of a thin sheet glass used for a flat panel display or the like, particularly, to cleanly bend and split a narrow ear part. <P>SOLUTION: In the ear part cutting device used for glass sheet production by a float process, and composed of a cut line imparting part for ear part cutting, a roller for supporting and a press/split roller, an edge part supporting roller is provided, and the ear part supporting roller is supported by a rotating supporting arm freely rotatable to the width direction of a glass ribbon. Further, the rotating supporting part is movable to the upper and lower directions, and is also movable to the width direction of the glass ribbon. Further, the rotating supporting arm is connected with a supporting rod capable of horizontal movement and vertical movement at a slide part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a folding device and a folding method for thin glass used in a flat panel display or the like, and more particularly to a folding device and a folding method in which a narrow ear portion is clean and not scratched.

  In the production of a glass plate by the float process, after the glass ribbon is cooled, it is conveyed on a number of conveying rollers. It is necessary to cut the ear | edge part in which the roller ribbon of the both sides exists in this glass ribbon conveyed on the conveyance roller after this cooling.

  Regarding the cutting of the ear part, Patent Document 1 discloses an apparatus for cutting by using a supporting roller provided at the lower part of the glass ribbon and a split roller provided at the upper part of the glass ribbon. ing.

  Patent Document 2 describes that a cut ear is dropped by its own weight.

In recent years, thin glass plates with a thickness of 1 mm or less used for flat panel displays such as liquid crystal displays, plasma displays and organic EL displays have been manufactured by the float process, and such glass with a thickness of 1 mm or less. In the plate, it is necessary to fold and break the end face of the fold opening so that the end edge is not scratched.
JP-A-48-15909 JP-A-3-103331

  When cutting the ears with the ear cutting device disclosed in Patent Document 1, in the case of a glass plate having a thickness of 1 mm or less, the ears to be cut are light and thus the ears are cut and separated. Then, there is an uncut portion that is not cut off, and the cut off ear portion is bent, and the cut portion may not be cleanly cut due to contact between the end faces.

  Furthermore, there is a possibility that a non-uniform load may be generated on the scoring line from one end to the other end of the scoring line and a clean cut cannot be performed.

  The present invention has been made in view of the above points, and the ear cutting that enables reliable splitting and clean cutting of the ears without contacting each other with a simple configuration. It is an object to provide a device.

  The ear cutting device of the present invention is an ear cutting device, which is used for manufacturing a glass plate by a float method, and includes an incision cutting line applying portion, a supporting roller and a split roller. It is an ear | edge part cutting device characterized by being provided.

  The ear cutting device of the present invention is characterized in that, in the ear cutting device, the ear support roller is supported by a rotation support arm that is rotatable in the vertical direction and the width direction of the glass ribbon. It is a part cutting device.

  Further, the ear cutting device of the present invention is the ear cutting device according to the above-mentioned ear cutting device, wherein the rotation support portion of the rotation support arm is movable in the vertical direction and the width direction of the glass ribbon. is there.

  The ear cutting device of the present invention is characterized in that, in the ear cutting device, the rotation support arm is connected to a support rod capable of horizontal movement and vertical movement by a slide portion. Device.

  The present invention provides an apparatus capable of clean-cutting the ears in the production of a thin glass sheet having a thickness of 1 mm or less by the float process, and can improve the production yield.

  As shown in FIGS. 1 to 3, in the present invention, an edge side portion (commonly referred to as an ear portion) 3 of a thin glass (glass ribbon) 1 manufactured by a float process is parallel to the end portion of the glass ribbon 1. A device that sequentially breaks along the scoring line 2 applied to the above, and a folding device that can obtain a clean cut surface that does not cause scratches, chipping, etc. due to contact between the split end faces during splitting, and Is the method.

  As shown in FIGS. 1 to 3, the folding device of the present invention mainly includes a support roller 5, a push roller 4, an ear support roller 6 and their support members (not shown), and a scoring line. And a device (not shown).

  The support roller 5, the split roller 4 and the ear support roller 6 are all preferably made of hard rubber.

  As shown in FIG. 1 to FIG. 3, the cut ribbon 2 is applied to the glass ribbon, and the glass ribbon ear 3 is cut by the split roller 4 and the supporting roller 5. The ear is culleted as glass waste.

  The glass ribbon 1 is preferably cut to a predetermined dimension in a direction perpendicular to the width direction of the glass ribbon before cutting the ear portion.

  In the case of a glass plate having a thickness of 2 mm or more used for vehicles or construction, the ear part cut almost instantaneously at the scoring line 2 over the entire predetermined dimension due to the weight of the ear part, Dropped and removed.

  However, in the case of a thin glass plate having a thickness of 1 mm or less used for flat panel displays such as liquid crystal displays, plasma displays, and organic EL displays, the speed at which the cut ears fall is slow or predetermined. It is not cut at once over the dimensions, and the split end faces at the time of splitting easily come into contact with each other, and scratches or chips due to the contact occur.

  In the present invention, as shown in FIGS. 1 to 3, ear support rollers are provided in order to prevent the split end faces from contacting each other at the time of splitting.

  Since this ear | edge part support roller latches the ear | edge part to be cut | disconnected, the ear | edge part to be cut | disconnects does not move freely, and it can prevent the contact between folding end surfaces.

  As shown in FIG. 4, it is desirable to arrange the split roller 4 on the downstream side of the support roller 5 with respect to the conveyance direction of the glass ribbon 1. Moreover, it is desirable to provide the ear | edge part support roller 6 near the split roller 4 and the support roller 5, and you may install two or more. Further, the ear support roller is preferably provided on the downstream side of the split roller 4 and on the upstream side of the support roller 5.

  Further, the ear support roller is preferably adjustable so that the position of the glass ribbon in the width direction and the height can be appropriately changed in accordance with the thickness and the conveyance speed with respect to the direction in which the glass ribbon is conveyed. It is desirable that the glass ribbon is supported so as to be movable in the width direction and the vertical direction.

  As shown in FIG. 5, it is preferable that the ear support roller 6 is rotatably supported by the rotation support arm 10 because the orientation of the roller with respect to the glass ribbon can be adjusted.

  In addition, the rotation support arm 10 can move the position of the rotation support portion 11 in the vertical direction and the horizontal direction, and the ear portion support roller 6 in the vertical direction and the horizontal direction with respect to the ear portion 3 (the width direction of the ribbon). Can be adjusted.

  In addition, the side opposite to the side supporting the ear support roller 6 of the rotation support arm 10 is connected to the rotation support unit 11 by a horizontal movement bar 12 and a slide unit 13 that can move horizontally. It is desirable that

  By adjusting the position of the rotation support part 11 and the position of the horizontal movement bar 12, the orientation of the roller with respect to the glass ribbon can be adjusted in accordance with the adjustment of the position of the ear part support roller in the vertical and horizontal directions. Become.

  A servo motor, an air cylinder, etc. can be used as a horizontal movement means of the rotation support part 11, a vertical movement means, and a horizontal movement means of the horizontal movement bar 12.

It is a schematic front view which shows the position of an ear | edge support roller. It is a schematic side view which shows the position of an ear | edge support roller. It is a schematic plan view which shows the position of an ear | edge support roller. It is a figure for demonstrating the position with respect to the conveyance direction of the glass ribbon of a scissor roller, a support roller, and an ear | edge part support roller. It is a schematic front view which shows the support part of an ear | edge support roller.

Explanation of symbols

1 Thin glass (glass ribbon)
2 Cut line 3 Edge side part (ear part)
4 Split roller 5 Support roller 6 Ear support roller 7 Transport roller 10 Rotation support arm 11 Rotation support portion 12 Position adjustment bar 13 Slide portion

Claims (4)

  An ear cutting device comprising a cutting line providing portion for cutting an ear, a supporting roller, and a split roller, which is used for manufacturing a glass plate by a float method, and an ear supporting roller is provided. Partial cutting device.   The ear cutting device according to claim 1, wherein the ear support roller is supported by a rotation support arm that is rotatable in the width direction of the glass ribbon.   The ear part cutting device according to claim 1, wherein the rotation support part of the rotation support arm is movable in the vertical direction and the width direction of the glass ribbon.   The ear part cutting device according to any one of claims 1 to 3, wherein the rotation support arm is connected to a support bar capable of horizontal movement and vertical movement by a slide part.

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