JP6555480B2 - Plate glass attitude changing device and attitude changing method - Google Patents

Description

  The present invention relates to a technology for manufacturing plate glass, and more particularly to a plate glass posture changing device and a posture changing method.

  When manufacturing flat glass for flat panel displays (FPD) such as liquid crystal displays (LCD), plasma displays (PDP), organic EL displays (OLED), etc., a large glass substrate formed by a molding method such as a downdraw method. Is cut to form a plate glass of a predetermined size. Specifically, a plate glass is formed by cleaving a glass substrate using, for example, a scribe wheel such as a diamond cutter.

  When a glass substrate is cut to form a plate glass, a minute crack having a depth of about several μm to 100 μm is formed on the cut surface (end surface). Since this crack causes a decrease in the mechanical strength of the plate glass, it is removed by processing the end face of the plate glass. That is, in order to increase the mechanical strength of the plate glass, prevent cracking and chipping of the plate glass, and facilitate handling in the subsequent process, the end surface of the plate glass is subjected to grinding (chamfering) and polishing.

  As disclosed in Patent Document 1, an end face processing apparatus (end face processing line) for plate glass includes a first chamfering machine, a posture changing apparatus (reversing machine), and a second chamfering machine. This end face processing apparatus is for processing an end face of a rectangular plate glass. After processing (grinding / polishing) the end faces of the two sides of the plate glass with a processing tool of a first chamfering machine, the end face processing apparatus 90 horizontally converts the plate glass to 90 °. The posture is changed by rotating it, and then the end faces on the remaining two sides are processed (grinded / polished) by the processing tool of the second chamfering machine (see paragraph 0021 and FIG. 3 of the same document).

  In processing on the end face of the plate glass, a grinding wheel or a polishing wheel is used as a processing tool. If these tools are used for a long period of time, the abrasive grains fall off from the ground / polished surfaces, causing wear and clogging, and the ground / polished surfaces become hot due to friction, and the abrasive grains are damaged by heat. There is a fear. For this reason, in the end face processing apparatus, the grinding surface / polishing surface of the processing tool is cooled, and the friction resistance between the end surface of the plate glass and the grinding surface / polishing surface is adjusted between the processing tool and the end surface of the plate glass. A working fluid such as water is supplied (see paragraph 0004 of the same document).

JP2013-193892A

  In the end face processing of the plate glass by the end face processing apparatus as described above, the processing liquid supplied at the time of grinding remains on the upper surface of the plate glass. If the plate glass is lifted and rotated 90 ° in the horizontal direction while the processing liquid remains on the upper surface of the plate glass, the plate glass will be greatly bent so as to protrude downward due to the weight of the remaining processing liquid, which causes damage. May occur.

  The present invention has been made in view of the above circumstances, and provides a posture change device and a posture change method for a plate glass that can be stably rotated even if the processing liquid remains on the upper surface of the plate glass. Objective.

  The present invention is for solving the above-described problems, and is a device for changing the posture of a plate glass conveyed in a predetermined direction, and supports the plate glass by curving it so as to be convex upward And a lifting device that lifts and lowers the support, and a rotating device that rotates the support.

  According to such a configuration, the processing liquid remaining on the upper surface of the plate glass can be dropped from the plate glass when the support is raised by the lifting device by supporting the plate glass so as to be convex upward by the support. it can. Thereby, even if the processing liquid remains on the upper surface of the plate glass after the end face processing, the plate glass can be prevented from being damaged at the time of rising, and the plate glass can be rotated stably.

  In the plate glass posture changing device according to the present invention, the support includes at least two elongated support members provided so as to intersect with each other, and each of the support members projects the plate glass upward. It is desirable to be bent and supported.

  By supporting the plate glass so as to be convex upward by these support members, the plate glass is curved like a bowl. Thereby, the processing liquid remaining on the upper surface of the plate glass is dropped, and the amount of the processing liquid remaining on the upper surface of the plate glass can be reduced as much as possible.

  Moreover, it is desirable that the support has a discharge part for discharging a liquid. By discharging the liquid from the discharge section, the liquid can be interposed between the lower surface of the plate glass and the support when the support supports the plate glass. Thereby, the lower surface of plate glass is protected by this liquid, and generation | occurrence | production of the abrasion of plate glass at the time of attitude | position change can be prevented.

  The support preferably has a frame shape. Thereby, a support body can support the edge of a plate glass, Furthermore, a support body can be reduced in weight, and it becomes possible to reduce the driving force, when rotating a support body by a rotating apparatus.

  The present invention is for solving the above problems, and is a method for changing the posture of a sheet glass conveyed in a predetermined direction, and supports the sheet glass so as to be convex upward by a support, The posture of the plate glass is changed in the horizontal direction by rotating the support.

  According to such a configuration, the processing liquid remaining on the upper surface of the plate glass can be dropped from the plate glass by bending and supporting the plate glass so as to be convex upward. Thereby, the quantity of the process liquid which remains on the upper surface of plate glass after end surface processing can be reduced as much as possible, and damage to plate glass can be prevented.

  According to the present invention, even if the processing liquid remains on the upper surface of the plate glass, the plate glass can be stably rotated.

It is a top view which shows the processing apparatus containing an attitude | position change apparatus. It is a top view of a posture change device. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. It is a fragmentary sectional view in the support member of a support body. It is a side surface for demonstrating the attitude | position change of the plate glass by an attitude | position change apparatus. It is a side view which shows the other example of a support body. It is a side view which shows the other example of a support body. It is a side view which shows the other example of a support body.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 5 show an embodiment of a processing apparatus including a posture changing device (swivel machine) according to the present invention.

  As shown in FIG. 1, the processing device 1 includes a first processing device 1 a, a second processing device 1 b, and a posture changing device 2. The 1st processing apparatus 1a and the 2nd processing apparatus 1b are end surface processing apparatuses which process the end surface of the rectangular plate glass G. As shown in FIG. In addition, as shown in FIG. 1, the plate glass G is conveyed in order of the 1st processing apparatus 1a, the attitude | position change apparatus 2, and the 2nd processing apparatus 1b.

  In this processing apparatus 1, as shown in FIG. 1, after processing the end surfaces of the two sides of the glass sheet G by the first processing apparatus 1a, the attitude of the glass sheet G is changed by 90 ° in the horizontal direction by the attitude changing device 2 (solid line). And the two end faces are processed by the second processing apparatus 1b. In the present embodiment, as the first processing device 1a and the second processing device 1b, a grinding device that performs grinding (chamfering) on the end surface of the plate glass G is illustrated, but the present invention is not limited to this. That is, the first processing apparatus 1a and the second processing apparatus 1b may include a polishing apparatus that polishes the end surface of the plate glass G.

  The first processing apparatus 1a and the second processing apparatus 1b include a pair of processing tools 3a and 3b for processing the end surface of the plate glass G, and processing liquid supply devices 4a and 4b provided corresponding to the processing tools 3a and 3b, respectively. With. Each processing tool 3a, 3b is a pair of grinding wheels that chamfer the end face of the plate glass G. Each supply device 4a, 4b includes a nozzle 5 that discharges water or other processing liquid. The first processing device 1a and the second processing device 1b supply the processing liquid from the nozzle 5 toward the contact portion between the processing tools 3a and 3b and the plate glass G, while the processing tools 3a and 3b are moved along one side of the plate glass G. Each end face of the glass sheet G is ground over its entire length.

  The posture changing device 2 is disposed between the first processing device 1a and the second processing device 1b. As shown in FIGS. 2 and 3, the posture changing device 2 includes a support 6 that supports the plate glass G, a lifting device 7 that lifts and lowers the support 6, a rotating device 8 that rotates the support 6, and the plate glass G. And a plurality of transfer devices 9 for moving the device in a predetermined direction.

  As shown in FIG. 2, the support 6 is configured as a rectangular frame in a plan view. Specifically, the support 6 includes a plurality of first support members 10 and second support members 11 that intersect at a predetermined angle. In the present embodiment, the first support member 10 and the second support member 11 intersect at an angle of about 90 °, but are not limited to this angle. The support members 10 and 11 are both metal (for example, aluminum) and are hollow and long rod-shaped members. By crossing the plurality of first support members 10 and the second support member 11, the support 6 has a frame shape having a plurality of openings.

  Each of the support members 10 and 11 is configured to be curved so as to protrude upward. In FIG. 3, the curved shape of the second support member 11 is shown, but the first support member 10 also exhibits the same curved shape as the second support member 11. It is desirable that the radius of curvature of each of the support members 10 and 11 is 70000 mm or greater and 140000 mm or less. By making the curvature radii of the support members 10 and 11 different, the support body 6 is formed in a bowl shape that is convex upward as a whole. Thereby, the glass sheet G placed on the support 6 is curved in a bowl shape so as to protrude upward according to the shape of the support 6.

  As shown in FIG. 4, each support member 10, 11 is filled with a liquid L such as water. Specifically, the 1st support member 10 and the 2nd support member 11 are connected in each cross | intersection part so that the hollow part may connect. As a result, the liquid L flows through the first support member 10 and the second support member 11. Each support member 10, 11 has a hole 13 for discharging the liquid L inside. A pump (not shown) is connected to the support 6, and each support member 10, 11 is configured such that the internal liquid L is discharged from the hole 13 by a predetermined pressure. Not limited to the above configuration, a pipe through which the liquid L flows may be provided inside each of the support members 10 and 11, and the liquid L in this pipe may be discharged from the hole 13.

  As shown in FIG. 2 thru | or FIG. 4, each support member 10 and 11 has the some support part 12 for supporting the plate glass G on the upper surface. Each support portion 12 is formed in a rectangular shape and is formed of an elastic body such as rubber, for example. The material of each support portion 12 is not limited to an elastic body, and may be composed of a sponge or other shrinkable material. Each support portion 12 has a hole 14 communicating with the hole 13 of the support members 10 and 11. The hole 14 functions as a discharge unit that discharges the liquid L filled in the support members 10 and 11 onto the upper surface of the support unit 12.

  The elevating device 7 is constituted by a cylinder device or other actuator. As shown in FIG. 3, the lifting device 7 is disposed below the rotating device 8 and lifts and lowers the support 6 together with the rotating device 8. The lifting device 7 raises the support 6 from the standby position, thereby supporting the plate glass G on the transport device 9 on the support 6. When the posture change of the plate glass G by the rotating device 8 is finished, the support 6 is moved. Lower to the standby position.

  The rotating device 8 is configured by an actuator such as a motor. As shown in FIG. 3, the rotating device 8 has a rotating shaft 15, and the rotating shaft 15 is fixed to the lower surface side of the central portion of the support 6. The rotating device 8 rotates (rotates) the support 6 at an angle of about 90 ° around the rotating shaft 15 by rotating the rotating shaft 15, thereby changing the posture of the plate glass G in the horizontal direction.

  The transport device 9 transfers the plate glass G processed in the first processing device 1a to the posture changing device 2, and transfers the plate glass G from the posture changing device 2 to the second processing device 1b. As shown in FIG.2 and FIG.3, the conveying apparatus 9 is provided in the position corresponding to the opening part of the support body 6 comprised by frame shape.

  The conveyance device 9 includes a plurality of pairs of rollers 16 and a plurality of conveyance belts 17 wound around each roller 16. In the plural pairs of rollers 16, one roller 16 is disposed coaxially, and similarly, the other roller 16 is also disposed coaxially. Although the conveyance belt 17 is comprised by an endless rubber belt, for example, it is not limited to this.

  One of the plurality of conveyor belts 17 is for driving the rollers 16 in rotation. The conveyor belts 17 are driven to rotate by a driving device (not shown) so that they are wound around the other rollers 16. The other conveying belt 17 is rotated to convey the glass sheet G.

  Hereinafter, a method for changing the posture of the glass sheet G using the posture changing device 2 having the above-described configuration will be described.

  While the end faces relating to the two sides of the glass sheet G are processed by the first processing apparatus 1a, the posture changing apparatus 2 is in a standby state. In this standby state, the support 6 is positioned below the upper part of the conveyor belt 17 of the conveyor 9 as shown in FIGS. 3 and 5A. Thereby, the conveyance belt 17 is in a state in which the plate glass G can be received. In addition, the hole (discharge part) 14 of the support part 12 which concerns on the support body 6 continues discharging the liquid L with which the inside of each support member 10 and 11 is filled.

  When the processing by the first processing device 1a is completed, the transfer device 9 of the posture changing device 2 receives the plate glass G from the first processing device 1a. At this time, the processing liquid supplied from the supply device 4a of the first processing apparatus 1a is accumulated on the upper surface of the plate glass G (not shown). The conveying apparatus 9 arrange | positions this plate glass G above the support body 6, as shown to Fig.5 (a).

  Thereafter, the lifting device 7 raises the support 6 and brings the support 12 into contact with the lower surface of the plate glass G. At this time, since the support part 12 is comprised with the elastic body, it absorbs the impact when it contacts the lower surface of the plate glass G. FIG. The elevating device 7 further raises the support 6 and moves the support portion 12 above the transport belt 17 of the transport device 9 as shown in FIG. Thus, the plate glass G is separated from the transport belt 17 and is in a state where the plate glass G is supported only by the support 6.

  At this time, as shown in FIG. 5B, the plate glass G is curved so as to protrude upward according to the curved shape of the support 6. Due to this deformation, the processing liquid accumulated on the upper surface of the plate glass G moves toward the edge of the plate glass G and falls from the edge.

  When the lifting device 7 raises the glass sheet G to a predetermined position, the rotating device 8 drives the rotating shaft 15 and rotates the support 6 about the rotating shaft 15 by about 90 °. Thereby, the attitude | position of the plate glass G is changed along a horizontal direction. Thereafter, the lifting device 7 lowers the support 6 and moves it below the upper portion of the transport belt 17 of the transport device 9. Thereby, the plate glass G comes into contact with the transport belt 17 again and is separated from the support 6.

  Thereafter, the transport device 9 rotates the transport belt 17 to transport the plate glass G to the second processing device 1b. The 2nd processing apparatus 1b processes the end surface which concerns on the remaining two sides of the plate glass G with the processing tool 3b. When the processing by the second processing apparatus 1b is completed, the plate glass G is commercialized through a cleaning process.

  According to the posture change device 2 and the posture change method of the plate glass G according to the present embodiment described above, the plate 6 is curved and supported by the support 6 so as to be convex upward. The remaining working fluid can be dropped from the glass sheet G.

  Furthermore, each of the first support member 10 and the second support member 11 is configured to be curved so as to protrude upward, so that the support 6 can bend the plate glass G in a bowl shape. The processing liquid remaining on G can be moved radially from the center of the plate glass G. Thereby, the processing liquid remaining on the plate glass G can be reduced as much as possible. Therefore, when the plate glass G is moved up and down and when the plate glass G is rotated, excessive weight due to the processing liquid does not act on the plate glass G. Thereby, it becomes possible to rotate the plate glass G stably.

Moreover, the support body 6 can interpose this liquid L between the lower surface of the plate glass G, and the support part 12 by discharging the liquid L from the discharge part (hole 14) of the support part 12. FIG. Thereby, the lower surface of the plate glass G can be protected and the generation | occurrence | production of the abrasion of the plate glass G at the time of attitude | position change can be prevented.

  Further, by configuring the support body 6 in a frame shape, the vicinity of the edge of the plate glass G can be supported by the support body 6, and the support body 6 can be reduced in weight. Space that can be arranged can be secured. Thereby, when the support body 6 is rotated by the rotating device 8, the driving force can be reduced as much as possible, and the posture changing device 2 can be downsized.

  6 to 8 show other examples of the support 6. In the above embodiment, the support members 10 and 11 constituting the support 6 are configured in a curved shape over the entire length thereof, but the shapes are different in the examples illustrated in FIGS. 6 to 8. In the following description, the first support member 10 constituting the support 6 will be described as an example, but the second support member 11 may be configured in the same manner.

  In the example illustrated in FIG. 6, the first support member 10 is partially curved and the other part is configured in a straight line. Specifically, the first support member 10 is a curved portion 18 that is curved so that a middle portion (center portion) thereof is convex upward, and a linear portion 19 is connected to an end portion of the curved portion 18. It is a thing. Also in this example, the plate glass G is deformed into a curved shape so as to protrude upward according to the shape of the first support member 10 when supported by the support portion 12. By this bending, the processing liquid remaining on the upper surface of the plate glass G is dropped from the plate glass G, and the remaining amount of the processing liquid can be reduced.

  In the example shown in FIG. 7, the first support member 10 is configured in a bent shape so that a portion corresponding to the central portion of the support 6 is convex upward. Specifically, the first support member 10 includes a first straight portion 20 and a second straight portion 21 that are configured in a straight line. One end portion of the first straight portion 20 is connected to the second straight portion 21, and the other end portion is inclined so as to be positioned below the one end portion. Similarly, the second straight portion 21 is connected so that one end thereof is connected to the first straight portion 20 and the other end is positioned below the one end.

  In this way, by configuring the first support member 10 in a bent shape, the plate glass G is convex upward depending on the shape of the first support member 10 when supported by the support portion 12. Bend. By this deformation, the processing liquid remaining on the upper surface of the plate glass G can be dropped from the plate glass G, and the remaining amount of the processing liquid on the plate glass G can be reduced.

  In the example illustrated in FIG. 8, the first support member 10 is not a bent middle portion as in the example illustrated in FIG. 7, but is configured linearly from one end to the other end. In this example, about the some support part 12 arrange | positioned on the upper surface of the 1st support member 10, the plate glass G is curved so that it may become convex upwards by using what differs in thickness.

  In other words, the first support member 10 is formed with a plurality of support portions 12, and among these, the support portion 12 positioned in the middle is configured to be the thickest, and the first support member 10 has a thickness from the intermediate position. The thickness of the support portion 12 is gradually reduced toward each end portion. Furthermore, the upper surface of each support part 12 is comprised by the curved surface shape or the inclined surface shape.

  Thereby, the locus | trajectory which connects the upper surface of the support part 12 in the side view is formed in the curve shape which becomes convex upwards. Accordingly, the glass sheet G supported by the support 6 is curved so as to be convex upward along the curve drawn by the upper surface of the support 12. By this bending, the processing liquid remaining on the upper surface of the plate glass G can be dropped from the plate glass G, and the remaining amount of the processing liquid on the plate glass G can be reduced.

  In addition, this invention is not limited to the structure of the said embodiment, It is not limited to an above-described effect. The present invention can be variously modified without departing from the gist of the present invention.

  In said embodiment, although the example of the support body 6 which provided the support part 12 in the upper surface of each support member 10 and 11 was shown, it is not limited to this. That is, the plate glass G may be supported on the upper surfaces of the support members 10 and 11 without providing the support portion 12.

  In the above embodiment, an example in which the support 6 is rotated about 90 ° around the rotation shaft 15 of the rotating device 8 in order to change the posture of the plate glass G has been shown, but this rotation angle is limited to 90 °. Instead, it can be set to an arbitrary angle.

  In said embodiment, although the example which comprised the support body 6 in the frame shape was shown, it is not limited to this. For example, the support 6 may be configured in a cross shape by making two support members 10, 11, that is, one first support member 10 and one second support member 11 orthogonal to each other.

  In the above embodiment, the example in which the first support member 10 and the second support member 11 constituting the support 6 are similarly bent or bent is shown, but the present invention is not limited to this. For example, only one of the first support member 10 and the second support member 11 may be configured in a curved shape or a bent shape. Similarly, in the example according to FIG. 8, the thickness of the support portion 12 may be different only in one of the support members 10 and 11. The curved shape of each of the support members 10 and 11 includes a structure in which only these upper surfaces are convex upward and the lower surfaces thereof are linear.

DESCRIPTION OF SYMBOLS 3 Posture change apparatus 6 Support body 7 Lifting apparatus 8 Rotating apparatus 10 1st support member (support member)
11 Second support member (support member)
14 Hole of support part (discharge part)
G sheet glass

Claims (9)

An apparatus for changing the orientation of a sheet glass conveyed in a predetermined direction,
A support that curves and supports the plate glass so as to protrude upward, a lifting device that lifts and lowers the support, and a rotating device that rotates the support .
Said support comprises at least two of the elongated support member is provided so as to intersect, the support member is characterized that you support is curved in a convex said plate glass upward Posture change device. The posture changing apparatus according to claim 1 , wherein the support member is formed in a curved shape so as to protrude upward. The support is, the posture changing device according to claim 1 or 2 having an ejection portion for ejecting liquid. The support is, the posture changing device according to any one of claims 1 having a frame shape 3. An apparatus for changing the orientation of a sheet glass conveyed in a predetermined direction,
A support that curves and supports the plate glass so as to protrude upward, a lifting device that lifts and lowers the support, and a rotating device that rotates the support.
The posture changing apparatus according to claim 1, wherein the support includes a discharge unit that discharges the liquid. An apparatus for changing the orientation of a sheet glass conveyed in a predetermined direction,
A support that curves and supports the plate glass so as to protrude upward, a lifting device that lifts and lowers the support, and a rotating device that rotates the support.
The posture changing device, wherein the support has a frame shape. A method of changing the orientation of a sheet glass conveyed in a predetermined direction,
While supporting be curved so as to project the glass sheet upwardly by a support comprising at least two of the elongated support member provided so as to intersect the attitude of the plate glass by rotating the support The attitude | position change method of the plate glass characterized by changing in horizontal direction. A method of changing the orientation of a sheet glass conveyed in a predetermined direction,
While the liquid discharged from the discharge portion provided on the support is interposed between the support and the plate glass, the support is supported by curving the plate glass so as to protrude upward. A method of changing the orientation of the plate glass, wherein the orientation of the plate glass is changed in the horizontal direction by rotating the support. A method of changing the orientation of a sheet glass conveyed in a predetermined direction,
The plate glass is supported by curving the plate glass so as to be convex upward by a support having a frame shape, and the posture of the plate glass is changed in the horizontal direction by rotating the support. Modification method.

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