JP7172863B2 - Sheet glass conveying device and sheet glass manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sheet glass conveying apparatus and a sheet glass manufacturing method.

Patent Literature 1 discloses a sheet glass manufacturing apparatus including a conveying roller that conveys a hot sheet glass that has been rolled out and a water crusher that crushes the sheet glass by spraying water on the sheet glass conveyed by the conveying roller. ing. A water crusher is used to continuously crush sheet glass when the sheet glass cannot be collected as a product, such as when part of the apparatus is replaced or when the molded sheet glass does not have the desired thickness.

When the plate glass is crushed by the water crusher on the conveying roller, the surface of the conveying roller may become uneven due to the glass powder generated when the plate glass is crushed. If such unevenness occurs, there is a risk that problems such as scratches will occur on the surface of the plate glass in contact with the conveying roller. Therefore, the sheet glass manufacturing apparatus described above reduces the contact area between the conveying roller and the sheet glass, thereby suppressing the occurrence of problems with the sheet glass conveyed by the conveying roller.

JP-A-2016-88808

An object of the present invention is to provide a sheet glass conveying apparatus capable of suppressing the occurrence of problems in the sheet glass conveyed by the conveying unit along with the crushing process of the sheet glass, as in the sheet glass manufacturing apparatus as described above, and the sheet glass conveying apparatus. An object of the present invention is to provide a sheet glass manufacturing method.

Means for solving the above problems and their effects will be described below.
A sheet glass conveying apparatus for solving the above problems is a sheet glass conveying apparatus comprising a conveying section that conveys sheet glass molded from molten glass, and a crushing section that crushes the sheet glass conveyed by the conveying section, wherein the conveying The portion has a support shaft whose axial direction is perpendicular to the conveying direction of the plate glass, and a movable portion disposed radially outside the support shaft and movable in the axial direction on the support shaft. and the movable part includes a first roller capable of conveying the plate glass.

The sheet glass conveying apparatus having the above configuration moves the movable portion into the sheet glass conveying area when conveying the sheet glass, and moves the movable portion outside the sheet glass conveying area when crushing the sheet glass. Therefore, the plate glass conveying apparatus can suppress adhesion of glass powder or the like generated when crushing the plate glass to the first roller of the movable portion. Therefore, the plate glass conveying apparatus can suppress problems occurring in the plate glass conveyed by the conveying unit due to the glass powder adhering to the first roller of the movable unit.

In the sheet glass conveying apparatus described above, it is preferable that the movable portion includes a cylinder into which the support shaft is inserted, and the first roller is fixed to the cylinder.
In the plate glass conveying device having the above configuration, the movable portion can be moved between the conveying position and the retracted position by axially moving the cylinder into which the support shaft is inserted. In other words, the plate glass conveying device can move the movable portion with respect to the support shaft with a simple configuration.

In the plate glass conveying apparatus, it is preferable that the movable portion includes a second roller for moving the movable portion in the axial direction.
In the sheet glass conveying device having the above configuration, the movable portion can be smoothly moved in the axial direction by the second roller.

In the plate glass conveying device, the second rollers are arranged in a plurality so as to be aligned in the circumferential direction of the cylindrical body, and when the cylindrical body moves in the axial direction with respect to the support shaft, the second rollers are arranged on the outer peripheral surface of the support shaft. It is preferable to rotate while in contact with the

In the plate glass conveying device having the above configuration, when the movable portion moves in the axial direction, the plurality of second rollers rotates with respect to the support shaft. Therefore, the plate glass conveying device can move the movable portion more smoothly in the axial direction.

In the plate glass conveying device, the support shaft includes a planar rolling surface on an outer peripheral surface, and the rolling surface is a portion with which the plurality of second rollers contact when the plurality of second rollers rotate. It is preferably formed in

The plate glass conveying device having the above configuration can increase the contact area between the second roller and the support shaft. Therefore, the plate glass conveying device can stabilize the posture of the movable portion when the movable portion moves in the axial direction.

In the sheet glass conveying apparatus, when the position of the movable part when the first roller is positioned in the conveying area of the sheet glass is defined as the conveying position, the movable part has a locking mechanism that restrains the movable part at the conveying position. is preferably included.

The plate glass conveying device having the above configuration can suppress the movement of the movable portion in the axial direction when the conveying portion conveys the plate glass.
In the plate glass conveying apparatus, the cylindrical body is formed with a receiving hole penetrating in a radial direction, and the support shaft is configured to extend through the receiving hole of the cylindrical body when the movable portion is positioned at the conveying position. and an engaging recess is formed at a position radially overlapping with the locking mechanism, and the locking mechanism includes an engaging body received in the receiving hole and a biasing member biasing the engaging body toward the support shaft. preferably included.

In the sheet glass conveying device having the above configuration, when the movable portion moves to the conveying position, the engaging body biased by the biasing member is accommodated in the engaging recess formed in the support shaft. That is, the engagement of the engaging member with the support shaft restricts the movement of the movable portion in the axial direction. Thus, the glass sheet conveying device can lock the movable part in the conveying position.

In the plate glass conveying device, the position of the movable portion when the first roller is positioned in the plate glass conveying region is defined as the conveying position, and the position of the movable portion when the first roller retreats from the plate glass conveying region. When the position is set to the retracted position, the conveying section is fixed to the support shaft and contacts the movable section moving from the retracted position toward the conveying position to position the movable section at the conveying position. It is preferred to have a stopper.

In the sheet glass conveying device having the above configuration, the movable portion can be arranged at a fixed conveying position when the movable portion moves from the retracted position toward the conveying position.
In the plate glass conveying device, the first roller is preferably configured to be divisible in the circumferential direction.

In the sheet glass conveying apparatus having the above configuration, the first roller can be easily replaced because the first roller does not need to be pulled out from the cylinder in the axial direction when the first roller is replaced.
A plate glass manufacturing method for solving the above problems is a plate glass manufacturing method using the above-described plate glass manufacturing apparatus, wherein the position of the movable portion when the first roller is positioned in the plate glass transport area is the transport position, When the position of the movable part when the first roller is retracted from the conveying area of the plate glass is set to a retracted position, the movable part is moved from the conveying position to the retracted position, and then crushing the plate glass, After the sheet glass has been crushed, the movable portion is moved from the retracted position to the transport position.

The plate glass conveying apparatus and the plate glass manufacturing method can suppress the occurrence of problems in the plate glass conveyed by the conveying unit due to the crushing process of the plate glass.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows schematic structure of the plate glass manufacturing apparatus which concerns on one Embodiment. The top view which shows schematic structure of the said plate-glass manufacturing apparatus. The front view of the 2nd conveyance part of the said plate glass manufacturing apparatus. Sectional drawing of a said 2nd conveyance part. The exploded perspective view of the component of a said 2nd conveyance part. 6-6 line arrow sectional view of FIG. FIG. 4 is a plan view showing a schematic configuration of the glass manufacturing apparatus when the movable portion is positioned at the retracted position; Sectional drawing of a said 2nd conveyance part when a movable part is located in a use position.

Hereinafter, one embodiment of a sheet glass manufacturing apparatus and a sheet glass manufacturing method will be described with reference to the drawings. The sheet glass manufactured by the sheet glass manufacturing apparatus is, for example, crystallized glass having excellent heat resistance. Applications of plate glass include display applications, touch panel applications, photoelectric conversion panel applications, electronic device applications, window glass applications, building material applications and vehicle applications.

As shown in FIG. 1, the plate glass manufacturing apparatus 10 includes a forming unit 20 that forms molten glass G1 supplied from a supply unit (not shown) into a plate shape, and a heat treatment unit that heats the plate glass G2 formed by the forming unit 20. 30, and a plate glass conveying device 40 (hereinafter also referred to as “conveying device 40”) for conveying the plate glass G2.

The forming section 20 has a pair of forming rollers 21 . A pair of forming rollers 21 rolls the molten glass G1 to form a plate glass G2. That is, the sheet glass manufacturing apparatus 10 is an apparatus for forming the sheet glass G2 by the roll-out molding method.

The heat treatment section 30 is an annealing furnace that removes strain from the plate glass G2 immediately after molding. The interior of the thermal processing section 30 has, for example, a temperature gradient such that the temperature decreases as the sheet travels in the conveying direction.

As shown in FIGS. 1 and 2, the conveying device 40 includes a first conveying unit 41 and a second conveying unit 42 as an example of a "conveying unit" for conveying the sheet glass G2, and a sheet glass conveyed by the second conveying unit 42. and a crushing unit 43 for crushing G2. A region indicated by a chain double-dashed line in FIG.

As shown in FIG. 2 , the first conveying section 41 has a support shaft 51 whose axial direction is perpendicular to the conveying direction of the plate glass G2, and includes a plurality of substantially cylindrical conveying rollers 50 . The transport roller 50 is driven to rotate about the axis of the support shaft 51 by a motor (not shown).

As shown in FIG. 2, the second conveying section 42 includes a support shaft 60 whose axial direction is perpendicular to the conveying direction of the plate glass G2, a movable section 70 that moves in the axial direction with respect to the support shaft 60, a support and a stopper 80 that limits the movement of the movable part 70 with respect to the shaft 60 . Among the components of the second conveying portion 42, the support shaft 60 has a shape symmetrical in the axial direction, and the movable portion 70 and the stopper 80 are provided so as to form a pair on both sides of the support shaft 60 in the axial direction. . In the following description, the configuration of one side of the second conveying section 42 in the axial direction will be described.

As shown in FIGS. 3 and 4, the support shaft 60 has a substantially cylindrical shape. As shown in FIG. 4, an engaging recess 61 is formed in the central portion of the support shaft 60 in the axial direction. The engagement recess 61 is a substantially hemispherical space recessed in the radial direction from the outer peripheral surface of the support shaft 60 . Further, as shown in FIGS. 3 and 4 , a plurality of flat rolling surfaces 62 are formed on the outer peripheral surface of the support shaft 60 . The multiple rolling surfaces 62 extend axially. In this embodiment, four rolling surfaces 62 are formed at equal intervals in the circumferential direction of the support shaft 60 . The rolling surface 62 is formed by grinding or cutting the outer peripheral surface of the support shaft 60, for example. The support shaft 60 is driven to rotate about the axis of the support shaft 60 by a motor (not shown), like the transport rollers 50 of the first transport unit 41 .

As shown in FIGS. 3 and 4, the movable part 70 includes a cylinder 110 into which the support shaft 60 is inserted, a first roller 120 capable of transporting the sheet glass G2, and the first roller 120 fixed to the cylinder 110. A fixed flange 130 and a movable flange 140 are provided. The movable portion 70 includes a second roller 150 that rotates in contact with the rolling surface 62 of the support shaft 60 , a bearing portion 160 that rotatably supports the second roller 150 , and the movable portion 70 on the support shaft 60 . and a locking mechanism 170 that positions against. As shown in FIG. 3, among the components of the movable portion 70, the first roller 120, the fixed flange 130, the movable flange 140, the second roller 150, and the bearing portion 160 form a pair in the axial direction of the movable portion 70. is provided as follows.

As shown in FIGS. 3 and 4 , the cylindrical body 110 has a cylindrical shape, and the inner diameter of the cylindrical body 110 is larger than the outer diameter of the support shaft 60 . As shown in FIG. 4 , the support shaft 60 is inserted into the tubular body 110 . In this respect, the movable portion 70 is arranged radially outside the support shaft 60 .

As shown in FIG. 4 , a housing hole 111 is formed through the cylindrical body 110 in the radial direction at a portion near the first end in the axial direction of the cylindrical body 110 . A plurality of housing grooves 112 are formed through the cylindrical body 110 in the radial direction at positions advanced toward the second end in the axial direction from the portion of the cylindrical body 110 where the housing holes 111 are formed. In this embodiment, four housing grooves 112 are formed at equal intervals in the circumferential direction of the cylindrical body 110 .

As shown in FIGS. 4 and 5, the first roller 120 is composed of a plurality of split rollers 121 split in the circumferential direction. Specifically, the first roller 120 is composed of a divided roller 121 divided into two in the circumferential direction. A plurality of insertion holes 122 are formed through the split roller 121 in the axial direction. A plurality of insertion holes 122 are formed at equal intervals in the circumferential direction of the dividing roller 121 . It is preferable that the first roller 120 is made of a carbon material at least at a portion including the outer peripheral surface.

As shown in FIG. 4, fixed flange 130 is attached to barrel 110 so as to be immovable relative to barrel 110, and movable flange 140 is attached to barrel 110 so as to be axially movable relative to barrel 110. Attached to body 110 . As shown in FIGS. 4 and 5, a plurality of fixing holes 131 are formed through the fixed flange 130 in the axial direction, and a plurality of insertion holes 141 are formed through the movable flange 140 in the axial direction. be done. A plurality of fixing holes 131 are formed at equal intervals in the circumferential direction of the fixed flange 130 , and a plurality of insertion holes 141 are formed at equal intervals in the circumferential direction of the movable flange 140 . A thread groove is formed on the inner peripheral surface of the fixing hole 131 of the fixing flange 130 .

When fixing the first roller 120 to the cylinder 110 , a plurality of split rollers 121 are arranged between the fixed flange 130 and the movable flange 140 . Subsequently, the fastening member 180 passed through the insertion hole 141 of the movable flange 140 and the insertion hole 122 of the split roller 121 is fixed to the fixing hole of the fixed flange 130 . By fixing the plurality of divided rollers 121 to the fixed flange 130 in this way, the plurality of divided rollers 121 , that is, the first roller 120 is fixed to the cylindrical body 110 .

As shown in FIGS. 3 and 4 , the second roller 150 and the bearing portion 160 are arranged in the housing groove 112 of the cylindrical body 110 . Specifically, as shown in FIG. 6 , the second roller 150 is housed in the housing groove 112 of the tubular body 110 , and the bearing portion 160 is arranged around the housing groove 112 of the tubular body 110 . Bearing portion 160 supports second roller 150 such that the rotation axis of second roller 150 extends in the circumferential direction of cylindrical body 110 . When the bearing portion 160 supports the second roller 150 , the second roller 150 protrudes radially inward from the inner peripheral surface of the tubular body 110 .

As shown in FIG. 6 , when the support shaft 60 is inserted into the cylindrical body 110 , the second roller 150 contacts the rolling surface 62 of the support shaft 60 . In this respect, the rolling surface 62 of the support shaft 60 is formed at a portion of the support shaft 60 with which the second roller 150 contacts when the second roller 150 rotates. Moreover, the bearing portion 160 supports the second roller 150 so that the second roller 150 biases the rolling surface 62 of the support shaft 60 .

As shown in FIGS. 3 and 4, the lock mechanism 170 includes a ball 171 as an example of an "engagement member" accommodated in the accommodation hole 111 of the movable part 70, and a "biasing member" that biases the ball 171. It has a leaf spring 172 as an example and a support portion 173 that supports the leaf spring 172 . Ball 171 is a metal ball smaller than accommodation hole 111 . The leaf spring 172 has a free end that biases the ball 171 at its distal end and a fixed end that is supported by the support portion 173 at its base end. The support portion 173 is installed at a position axially adjacent to the accommodation hole 111 of the cylindrical body 110 . When the support shaft 60 is inserted into the cylindrical body 110 , the ball 171 is biased toward the rolling surface 62 of the support shaft 60 by the plate spring 172 . Thus, the balls 171 contact the rolling surface 62 of the support shaft 60 .

As shown in FIGS. 3 and 4, the stopper 80 is fixed to the support shaft 60. As shown in FIG. Specifically, the stopper 80 is fixed at a position closer to the intermediate portion of the support shaft 60 than the engaging recess 61 . The stopper 80 may be composed of a fastening member or the like that can be fastened to the support shaft 60 .

As shown in FIG. 2, the crushing section 43 is arranged at a position facing the area where the second conveying section 42 conveys the sheet glass G2. The crushing unit 43 crushes the plate glass G2 by thermal shock by spraying cooling liquid such as water on the plate glass G2 during slow cooling. The crushing unit 43 crushes the sheet glass G2 when, for example, the sheet glass G2 does not have a desired thickness at the start of molding of the sheet glass G2, when maintenance and inspection of the manufacturing apparatus is performed, and when components of the manufacturing apparatus are replaced. is transported to a post-process to produce the sheet glass G2, the sheet glass G2 is continuously crushed.

Operations of the second conveying section 42 and the crushing section 43 of the present embodiment will be described.
In the following description, in the second conveying unit 42, the position of the movable part 70 when the first roller 120 is positioned within the conveying area Ar is also referred to as a "conveying position", and the first roller 120 is positioned outside the conveying area Ar. The position of the movable portion 70 at this time is also referred to as a "retracted position". When the movable part 70 is positioned at the transfer position, the second transfer part 42 can transfer the plate glass G2, and when the movable part 70 is positioned at the retracted position, the second transfer part 42 cannot transfer the plate glass G2.

As shown in FIG. 2, when the crushing section 43 does not crush the plate glass G2, the movable section 70 of the second conveying section 42 is arranged at the conveying position. In this case, the 1st conveyance part 41 and the 2nd conveyance part 42 convey the plate glass G2 towards a post process.

On the other hand, as shown in FIG. 7, when the crushing section 43 crushes the sheet glass G2, the movable section 70 of the second conveying section 42 is moved from the conveying position to the retracted position as indicated by the solid line arrow. Specifically, while the molten glass G1 is being supplied to the molding section 20, the movable section 70 of the second conveying section 42 is moved from the conveying position to the retracted position. The movable portion 70 is moved to the retracted position by being sandwiched by a clamp or the like and being pulled outward in the axial direction by the clamp.

In this way, the movable portion 70 of the second conveying portion 42 is moved to a position where the cooling liquid discharged from the crushing portion 43 is not sprayed. Therefore, even when the crushing unit 43 crushes the plate glass G2, adhesion of glass powder and foreign substances in the cooling liquid to the first roller 120 of the second conveying unit 42 is suppressed. be done.

After that, as shown in FIG. 4, when the situation in which the plate glass G2 cannot be conveyed to the post-process is resolved, the supply of cooling liquid from the crushing section 43 is stopped, and then the movable section 70 of the second conveying section 42 is retracted. position to the transport position. Specifically, the first roller 120 of the second conveying section 42 is moved to the conveying area Ar of the plate glass G2. At this time, as shown in FIG. 8 , the movable portion 70 is positioned with respect to the axial direction of the support shaft 60 by contacting the stopper 80 . Specifically, the first end of the cylindrical body 110 contacts the stopper 80 and the movable portion 70 is positioned. Further, the movable portion 70 is locked from moving in the axial direction with respect to the support shaft 60 by engaging the ball 171 biased by the leaf spring 172 with the engagement recess 61 of the support shaft 60 . In this way, the 1st conveyance part 41 and the 2nd conveyance part 42 convey the plate glass G2 to a post process, and it will be in the state which can manufacture the plate glass G2.

Effects of the present embodiment will be described.
(1) The conveying device 40 moves the movable portion 70 to the conveying position when conveying the sheet glass G2, and moves the movable portion 70 to the retracted position when crushing the sheet glass G2. Therefore, the conveying device 40 can suppress adhesion of glass powder and the like generated when crushing the plate glass G<b>2 to the first roller 120 of the movable portion 70 . Therefore, the conveying device 40 can prevent problems from occurring in the plate glass G<b>2 conveyed by the second conveying unit 42 due to the glass powder adhering to the first roller 120 of the movable unit 70 .

(2) The conveying device 40 can move the movable portion 70 between the conveying position and the retracted position by axially moving the cylinder 110 into which the support shaft 60 is inserted. That is, the transport device 40 can move the movable portion 70 with respect to the support shaft 60 with a simple configuration.

(3) In the conveying device 40, the second roller 150 rotates with respect to the support shaft 60 when the movable portion 70 moves between the conveying position and the retracted position. Therefore, the transport device 40 can smoothly move the movable portion 70 between the transport position and the retracted position.

(4) Since the planar rolling surface 62 is formed on the outer peripheral surface of the support shaft 60 , the conveying device 40 can increase the contact area between the second roller 150 and the support shaft 60 . Therefore, the transport device 40 can stabilize the attitude of the movable part 70 when the movable part 70 moves between the transport position and the retracted position.

In addition, the plurality of second rollers 150 press the plurality of rolling surfaces 62 of the support shaft 60 , so that the cylindrical body 110 is positioned with respect to the support shaft 60 in the radial direction. As a result, when the support shaft 60 rotates around the axis for transporting the plate glass G2, the movable portion 70 is easily rotated together with the support shaft 60 . In other words, the movable portion 70 is less likely to rotate relative to the support shaft 60 during transport of the plate glass G2.

(5) The movable section 70 includes a lock mechanism 170 that restrains the movable section 70 at the transport position. Therefore, the conveying device 40 can suppress axial movement of the movable portion 70 when the second conveying portion 42 conveys the plate glass G2.

(6) In the conveying device 40 , when the movable portion 70 moves to the conveying position, the ball 171 biased by the plate spring 172 is accommodated in the engaging recess 61 formed in the support shaft 60 . In other words, the ball 171 is engaged with the support shaft 60 to restrict the movement of the movable portion 70 in the axial direction. Thus, the transport device 40 can lock the movable portion 70 in the transport position.

Further, when a predetermined load acts on the movable portion 70 in the axial direction, the conveying device 40 can unlock the movable portion 70 at the conveying position by pushing up the plate spring 172 with the ball 171 . That is, the transport device 40 can prevent the movable portion 70 from being difficult to move from the transport position to the retracted position.

(7) The second conveying section 42 has a stopper 80 fixed to the support shaft 60 . Therefore, the conveying device 40 can place the movable portion 70 at a fixed conveying position when the movable portion 70 moves from the retracted position toward the conveying position.

(8) The first roller 120 is configured to be divisible in the circumferential direction. Therefore, the conveying device 40 does not need to remove the first roller 120 from the cylindrical body 110 in the axial direction when replacing the first roller 120 , which facilitates replacement of the first roller 120 .

This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- The molding method of the sheet glass G2 of the molding unit 20 is not limited to the roll-out molding method. The forming method of the sheet glass G2 of the forming unit 20 may be, for example, a downdraw forming method, an overflow forming method, or a float forming method.

- The crushing part 43 may employ|adopt the structure which cools the plate glass G2 by methods other than discharging a liquid to the plate glass G2, and crushes the plate glass G2.
- The crushing part 43 may employ|adopt the structure which crushes the plate glass G2 by giving a physical impact to the plate glass G2.

- It is not necessary to form the flat rolling surface 62 on the outer peripheral surface of the support shaft 60 . In this case, the second roller 150 may roll on the curved rolling surface of the support shaft 60 .
- The movable part 70 may be configured to be manually movable between the transport position and the retracted position, or may be configured to be movable between the transport position and the retracted position by being driven by an actuator.

- In the movable portion 70, the stopper 80 may be omitted, and the lock mechanism 170 may be omitted. In this case, the conveying device 40 preferably has a configuration such as a fastening member for fixing the movable portion 70 to the support shaft 60 at the conveying position.

- The number of the first rollers 120 and the second rollers 150 installed in the movable portion 70 can be changed as appropriate.
- The division number of the 1st roller 120 in the movable part 70 can be changed suitably. Here, the first roller 120 may be a roller that cannot be split in the circumferential direction.

- The movable part 70 may not have the second roller 150 . In this case, it is preferable that the cylinder 110 moves between the transport position and the retracted position by sliding the cylinder 110 on the support shaft 60 .

A plurality of lock mechanisms 170 may be arranged in the circumferential direction with respect to the cylindrical body 110 .
- The leaf spring 172 of the lock mechanism 170 may be replaced by another spring such as a coil spring, or may be replaced by an elastic body such as rubber or resin. In this case, such an elastic body corresponds to an example of a "biasing member".

- The configuration of the lock mechanism 170 can be changed as appropriate. For example, the lock mechanism 170 is configured to lock or unlock the movable portion 70 at the transfer position by inserting or removing a pin into the engagement recess 61 of the support shaft 60 and the accommodation hole 111 of the cylindrical body 110 . good too.

DESCRIPTION OF SYMBOLS 10... Plate glass manufacturing apparatus, 20... Forming part, 21... Forming roller, 30... Heat treatment part, 40... Plate glass conveying apparatus (conveying apparatus), 41... First conveying part (an example of conveying part), 42... Second conveying part (Example of Conveying Section) 43 Crushing section 50 Conveying roller 51 Support shaft 60 Support shaft 61 Engagement recess 62 Rolling surface 70 Movable section 80 Stopper 110 Cylindrical body 111 Accommodating hole 112 Accommodating groove 120 First roller 121 Divided roller 122 Insertion hole 130 Fixed flange 131 Fixed hole 140 Movable flange 141 Insertion hole 150 Second roller 160 Bearing portion 170 Lock mechanism 171 Ball (an example of an engaging member) 172 Plate spring (an example of a biasing member) 173 Support portion 180 Fastening member Ar Conveyance Area, G1... Molten glass, G2... Plate glass.

Claims (10)

a conveying unit that conveys sheet glass formed from molten glass;
A plate glass conveying device comprising a crushing unit that crushes the plate glass conveyed by the conveying unit,
The conveying portion includes a support shaft having an axial direction perpendicular to the conveying direction of the plate glass, a movable portion arranged radially outside the support shaft and movable in the axial direction on the support shaft, has
The plate glass conveying device, wherein the movable portion includes a first roller capable of conveying the plate glass. the movable part includes a cylinder into which the support shaft is inserted;
The sheet glass conveying apparatus according to claim 1, wherein the first roller is fixed to the cylinder. The plate glass conveying apparatus according to claim 2, wherein the movable portion includes a second roller for moving the movable portion in the axial direction. A plurality of the second rollers are arranged so as to line up in the circumferential direction of the cylindrical body, and rotate in contact with the outer peripheral surface of the supporting shaft when the cylindrical body moves in the axial direction with respect to the supporting shaft. The sheet glass conveying apparatus according to claim 3. The support shaft includes a flat rolling surface on its outer peripheral surface,
The plate glass conveying apparatus according to claim 4, wherein the rolling surface is formed at a portion with which the plurality of second rollers come into contact when the plurality of second rollers rotate. When the position of the movable part when the first roller is positioned in the plate glass transport area is the transport position,
The sheet glass conveying apparatus according to any one of claims 2 to 5, wherein the movable portion includes a locking mechanism that constrains the movable portion to the conveying position. An accommodation hole is formed through the cylindrical body in a radial direction,
An engaging recess is formed in the support shaft at a position overlapping the housing hole of the cylindrical body in the radial direction when the movable portion is positioned at the transport position,
The sheet glass conveying apparatus according to claim 6, wherein the lock mechanism includes an engaging body accommodated in the accommodation hole, and a biasing member that biases the engaging body toward the support shaft. The position of the movable portion when the first roller is positioned in the conveying region of the plate glass is defined as the conveying position, and the position of the movable portion when the first roller is retracted from the conveying region of the plate glass is defined as the retreat position. when
The conveying unit has a stopper fixed to the support shaft and positioning the movable unit at the conveying position by coming into contact with the movable unit moving from the retracted position toward the conveying position. Item 8. The sheet glass conveying device according to any one of Item 7. The sheet glass conveying apparatus according to any one of claims 1 to 8, wherein the first roller is configured to be splittable in the circumferential direction. A sheet glass manufacturing method using the sheet glass conveying apparatus according to any one of claims 1 to 9,
The position of the movable portion when the first roller is positioned in the conveying region of the plate glass is defined as the conveying position, and the position of the movable portion when the first roller is retracted from the conveying region of the plate glass is defined as the retreat position. when
After moving the movable part from the conveying position to the retracted position, the sheet glass is crushed, and after the crushing of the sheet glass is completed, the movable part is moved from the retracted position to the conveying position. A sheet glass manufacturing method.

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