TW202327745A - Glass plate cleaning device and glass plate manufacturing method - Google Patents

Abstract

Provided is a glass plate cleaning device 1 comprising: a rotary cleaning body W which has a cleaning member 9 that contacts the upper surface Ga of a glass plate G, and a rotary shaft 8 that is coupled to the cleaning member 9 and rotates together with the cleaning member 9; and a support base 5 for supporting the rotary shaft 8. The support base 5 comprises a sliding support structure S for supporting the rotary shaft 8 so as to allow movement thereof in the axial direction.

Description

Glass plate cleaning device and glass plate manufacturing method

The invention relates to a glass plate cleaning device and a glass plate manufacturing method including a cleaning step.

Displays such as liquid crystal displays and organic electro-luminescence (EL) displays continue to advance in high-definition. Accordingly, in the manufacturing process of the display, a dense circuit is formed on the main surface of the glass plate used as the substrate for the display. Therefore, such a glass plate is required to have high cleanliness that does not adhere to dust or dirt.

Therefore, in the manufacturing process of a glass plate, the cleaning process of cleaning the main surface of a glass plate is generally provided after the cutting process of cutting an original glass plate into a predetermined size and obtaining a plurality of glass plates.

As a cleaning method of the main surface of a glass plate, the method disclosed by patent document 1 is mentioned, for example. In this document, each cleaning member is rotated in a state where a plurality of cleaning members are brought into contact with the main surface of the glass plate. Thereby, washing|cleaning is performed wiping the main surface of a glass plate. In addition, the cleaning member is attached to the head end of the rotating shaft (spindle). By rotationally driving the rotating shaft, the cleaning member rotates together with the rotating shaft. [Prior art literature] [Patent Document]

Patent Document 1: Japanese Patent Laid-Open No. 2020-7193

[Problem to be Solved by the Invention] Patent Document 1 discloses that a spacer is provided between the cleaning member and the rotation shaft in order to adjust the height position of the cleaning member with respect to the glass plate. By adjusting the thickness of the spacer, the height position of the cleaning member relative to the glass plate can be adjusted.

However, even if the spacer is provided, the height position of the cleaning member with respect to the glass plate may not be accurately adjusted due to variations in the thickness of the spacer or the like. As a result, the contact state between the cleaning member and the glass plate is insufficient, and cleaning unevenness may occur on the main surface of the glass plate.

The subject of this invention is to reduce the unevenness of cleaning of the main surface of a glass plate reliably. [Means to solve the problem]

(1) The glass plate cleaning device of the present invention created in order to solve the above-mentioned problems is characterized in that it includes: a rotating cleaning body, a cleaning member having contact with the main surface of the glass plate, and being connected to the cleaning member so as to rotate together with the cleaning member. and a supporting table supporting the rotating shaft; the supporting table includes a sliding support structure that supports the rotating shaft so that the rotating shaft can move in an axial direction.

In this way, by moving (sliding) the rotation shaft in the axial direction by the sliding support structure, it is possible to accurately adjust the height position of the cleaning member with respect to the main surface of the glass plate. As a result, the contact state between the cleaning member and the main surface of the glass plate is stabilized, and uneven cleaning of the main surface of the glass plate can be reliably reduced.

(2) In the structure of (1), it is preferable to include a plurality of rotating cleaning bodies, and one support table includes a plurality of sliding support structures, and the plurality of sliding support structures can make a plurality of rotating shafts rotate along their respective axes. A plurality of rotation axes are supported for movement.

In this way, a plurality of rotating shafts can be supported by one supporting platform, and the height positions of the cleaning members connected to the rotating shafts can be individually adjusted through the sliding support structures.

(3) In the structure of (1) or (2) above, it is preferable that the sliding support structure is configured so that the rotating shaft moves toward the main surface side by the self-weight of the rotating cleaning body.

In this way, since the rotation axis is always brought close to the main surface of the glass plate, the contact state between the cleaning member and the main surface of the glass plate becomes more stable.

(4) In the structure of (3) above, it is preferable that the rotary cleaning body includes a loadable and detachable weight.

In this way, the force of the rotating shaft toward the main surface side of the glass plate can be adjusted by the weight of the weight. Therefore, the contact state of the cleaning member and the main surface of the glass plate becomes more stable.

(5) In the structure of any one of (1) to (4), it is preferable that the sliding support structure includes a sliding bearing that can rotate the rotating shaft and support the rotating shaft in the axial direction. axis of rotation.

In this way, the axial movement of the rotary shaft is allowed, and the rotation of the rotary shaft is stabilized.

(6) The manufacturing method of the glass plate of the present invention created in order to solve the above-mentioned problems is characterized by comprising: a cleaning step using a glass plate cleaning device having the structure of any one of the above (1) to (5), Clean the main surface of the glass plate.

In this way, it is possible to enjoy the same operation and effect as the above-mentioned corresponding structure. [Effect of the invention]

According to the present invention, since the contact state between the cleaning member and the main surface of the glass plate is stabilized, unevenness in cleaning of the main surface of the glass plate can be reliably reduced.

Hereinafter, the washing|cleaning apparatus of the glass plate which concerns on this embodiment, and the manufacturing method of a glass plate are demonstrated, referring drawings. In addition, XYZ in the figure is an orthogonal coordinate system. The X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction. Since the same code|symbol is attached|subjected to the corresponding structural element in each embodiment, overlapping description may be abbreviate|omitted. When only a part of the structure is described in each embodiment, the structures of other embodiments described above can be applied to the other parts of the structure. Not only the combination of the structures explained in the description of the respective embodiments, but also partial combinations of the structures of the plurality of embodiments may be combined even if it is not explained, unless there is a particular hindrance to the combination.

(first embodiment) As shown in FIGS. 1 and 2 , the cleaning device 1 for a glass plate according to the first embodiment is moved horizontally by a conveying mechanism (not shown) such as a roller conveyor or a belt conveyor. The upper surface Ga and the lower surface Gb, which are a pair of main surfaces facing each other in the plate thickness direction of the glass plate G, are simultaneously cleaned while conveying the glass plate G in a posture.

Here, in this embodiment, the upper surface Ga of the glass plate G is a guaranteed surface, and the lower surface Gb of the glass plate G is a non-guaranteed surface. In the manufacturing process of the display and the like, circuits and the like are formed on the guaranteed surface. Therefore, the cleanliness of the upper surface Ga of the glass plate G serving as the guaranteed surface is particularly important.

The size of one side of the glass plate G is preferably from 500 mm to 4000 mm, and the plate thickness is preferably from 0.05 mm to 10 mm, more preferably from 0.2 mm to 0.7 mm.

The cleaning device 1 includes: an upper surface cleaning mechanism 2 for cleaning the upper surface Ga of the glass plate G; and a lower surface cleaning mechanism 3 for cleaning the lower surface Gb of the glass plate G.

Here, the lower surface cleaning mechanism 3 has a structure obtained by turning the upper surface cleaning mechanism 2 upside down, and has substantially the same structure as the upper surface cleaning mechanism 2 . Therefore, the structure of the upper surface cleaning mechanism 2 will be described below as an example, and the detailed description of the structure of the lower surface cleaning mechanism 3 will be omitted.

As shown in FIG. 1 , the upper surface cleaning mechanism 2 includes: a support table 5 formed as a shell structure storing a cleaning liquid 4 in an inner space; and a plurality of cleaning units 6 for cleaning the upper surface Ga of the glass plate G.

As the cleaning liquid 4 , a liquid such as a cleaning liquid (for example, liquid lotion) or a rinse liquid (for example, water) can be used.

The support table 5 is arrange|positioned so that it may straddle the width direction (X direction) of the glass plate G orthogonal to the conveyance direction (Y direction) of the glass plate G. Both ends in the width direction of the support stand 5 are supported by elevating devices 5 a that support the support stand 5 so as to be able to move up and down. In this embodiment, when washing the glass plate G, the support base 5 is fixed at a predetermined reference position. On the other hand, when the thickness of the glass plate G is greatly changed due to a change in the type of glass plate G, etc., before cleaning the glass plate G, the height position of the support table 5 is adjusted by the lifting device 5a, and the height position of the support table 5 is set in advance to match the glass plate G. The reference position corresponding to the thickness of G.

The several cleaning units 6 are arranged in a row along the width direction (X direction) of the glass plate G orthogonal to the conveyance direction (Y direction) of the glass plate G. Each cleaning unit 6 includes: an axis case 7 fixed to the support table 5 so as to face the inner space of the support table 5 ; The shell 7 and the cleaning member 9 are mounted on the head end of the rotating shaft 8 on the outside of the support table 5 and the shaft shell 7 . In each cleaning unit 6, the rotary shaft 8 and the cleaning member 9 constitute a rotary cleaning body W, and rotate integrally together. Here, the "head end" means the end on the glass plate G side, and the "basal end" means the end opposite to the head end on the glass plate G side (hereinafter the same).

The shaft housing 7 is a cylindrical member, and is fixed in a state of being inserted into holes respectively provided on the upper surface and the lower surface of the support table 5 .

A sliding bearing 10 and a sliding bearing 11 are press-fitted and fixed to the head end and base end of the shaft housing 7 , respectively. The sliding bearing 10 on the head end side has a cylindrical portion 10a and a flange portion 10b provided at the head end of the cylindrical portion 10a. The sliding bearing 11 on the base end side has a cylindrical portion 11a and a flange portion 11b provided on the base end portion of the cylindrical portion 11a. The sliding bearing 10 and the sliding bearing 11 may be made of metal, for example, and are made of resin (for example, made of engineering plastic) in this embodiment.

The rotating shaft 8 is rotatably held by the cylindrical portion 10 a of the sliding bearing 10 and the cylindrical portion 11 a of the sliding bearing 11 in a state where movement in the axial direction (Z direction) is permitted. That is, the sliding support structure S that supports the rotary shaft 8 so as to be movable in the axial direction is constituted by the sliding bearing 10 , the sliding bearing 11 , and the shaft housing 7 . In this embodiment, one support table 5 includes a plurality of sliding support structures S, and supports a plurality of rotating shafts 8 so as to be movable in the axial direction. That is, the plurality of rotary cleaning bodies W can move in the axial direction.

The cleaning member 9 is detachable from the rotary shaft 8 . The cleaning member 9 includes a cleaning part 9a for cleaning the upper surface Ga of the glass plate G by contacting the upper surface Ga of the glass plate G, and a support part 9b for supporting the cleaning part 9a.

The type of the cleaning unit 9 a may be, for example, a brush or the like, and is a sponge in the present embodiment. Although the shape of the cleaning part 9a is not specifically limited, In this embodiment, it is disc-shaped.

The shaft housing 7 is provided with a first supply path R1 that communicates the interior space of the support table 5 with the interior space of the shaft case 7, and the cleaning liquid 4 in the interior space of the support table 5 is supplied to the shaft through the first supply path R1 according to the arrow a. The inner space of shell 7.

The rotating shaft 8 is provided with a second supply path R2 that communicates the inner space of the shaft housing 7 with the cleaning member 9 , and the cleaning liquid 4 in the inner space of the shaft housing 7 is supplied to the cleaning member 9 through the second supply path R2 according to the arrow b.

The cleaning member 9 is provided with a through-hole R3 communicating with the second supply path R2, and the cleaning liquid 4 supplied by the second supply path R2 is supplied to the glass plate G through the through-hole R3 according to the arrow c. When the cleaning member 9 is formed of a material (such as a porous body) through which the cleaning liquid 4 can pass, the through hole R3 can be omitted.

The upper surface cleaning mechanism 2 includes a rotational drive mechanism 12 that rotationally drives the rotation shaft 8 of each cleaning unit 6 . The rotation drive mechanism 12 applies a rotation drive force to the base end portion of the rotation shaft 8 on the outside of the support base 5 and the shaft housing 7 .

The rotation drive mechanism 12 includes a gear mechanism 13 and a drive unit 14 . The gear mechanism 13 includes a plurality of gears 13a attached to the base ends of the respective rotating shafts 8, and adjacent gears 13a mesh with each other. The driving unit 14 includes a motor 14 a and a gear 14 b attached to the motor 14 a, and the gear 14 b meshes with the gear 13 a of the gear mechanism 13 . Therefore, when the gear 14b is rotated by the rotation of the motor 14a, the power of the rotation is transmitted to the gear mechanism 13, and the rotation shaft 8 of each cleaning unit 6 is rotated.

In the present embodiment, the rotation shafts 8 adjacent to each other in the width direction rotate in opposite directions (see FIG. 2 ), but may also rotate in the same direction. The power transmission unit is not limited to the gear mechanism 13 , and may be other mechanisms such as a belt, for example. A driving unit (motor) may be separately attached to each rotating shaft 8 .

Furthermore, the lower surface cleaning mechanism 3 has the cleaning unit 15, the cleaning member 16, the cleaning part 16a, the support part 16b, etc. similarly to the upper surface cleaning mechanism 2. The cleaning device 1 cleans the upper and lower surfaces Ga, Gb of the glass plate G between a pair of cleaning members 9 and 16 . However, in this embodiment, the cleaning member 9 of the upper surface cleaning mechanism 2 moves vertically so as to follow the upper surface Ga of the glass plate G, but the cleaning member 16 of the lower surface cleaning mechanism 3 does not follow the glass plate G. The way of the lower surface Gb moves in the up and down direction. That is, the height position of the cleaning member 16 of the lower surface cleaning mechanism 3 is also kept constant during cleaning.

As shown in FIG. 2 , the upper surface cleaning mechanism 2 has a plurality of rows (two rows in the illustration) cleaning rows L1 and L2 at intervals in the conveying direction (Y direction). The cleaning rows L1 and L2 are a plurality of cleaning rows. The cells 6 are arranged in a row in the X direction. The cleaning members 9 included in the cleaning row L1 on the upstream side and the cleaning members 9 included in the cleaning row L2 on the downstream side are arranged so as not to completely overlap each other when viewed from the conveyance direction. As a result, it is arranged in such a manner that, viewed from the conveyance direction, the cleaning members 9 of the cleaning row L2 on the downstream side overlap between the cleaning members 9 adjacent in the width direction in the cleaning row L1 on the upstream side. Clearance.

Different support tables 5 may be used for each of the cleaning rows L1 and L2. Alternatively, a common (one) support table 5 for a plurality of cleaning rows L1 and L2 may be used.

As shown in FIG. 3 , in the upper surface cleaning mechanism 2 , the sliding support structure S is configured so that the rotating shaft 8 moves toward the upper surface Ga side of the glass plate G by the self-weight of the rotating cleaning body W (rotating shaft 8 and cleaning member 9 ). . That is, the amount D1 of the head end of the rotating shaft 8 projecting from the bottom of the support table 5 in the state without the glass plate G is greater than the amount D2 of the head end of the rotating shaft 8 projecting from the bottom of the supporting table 5 in the state with the glass plate G. In other words, the protruding amount U1 of the proximal end of the rotary shaft 8 from the support base 5 without the glass plate G is smaller than the protruding amount U2 of the base end of the rotary shaft 8 from the support base 5 with the glass plate G present.

In the present embodiment, in the state where there is no glass plate G, the cleaning member 9 of the upper surface cleaning mechanism 2 is placed on the lower surface cleaning mechanism 3 for cleaning as the rotating shaft 8 falls due to the self-weight of the rotary cleaning body W. member 16. In addition, in the case of transmitting the rotational driving force through the gear mechanism 13, in order to maintain the meshing of the gears 13a, the maximum moving amount of the rotating shaft 8 (the amount of downward protrusion D1−the amount of downward protrusion D2) is preferably set to be smaller than that of the gears 13a. thickness (tooth width). The maximum movement amount of the rotary shaft 8 can be controlled by, for example, the size of the gap in the vertical direction (Z direction) between the lower surface of the gear 13 a and the upper surface of the shaft housing 7 (sliding bearing 11 ). The maximum movement amount of the rotary shaft 8 is set to, for example, 0.1 mm to 10 mm.

In this embodiment, an inclined guide surface 9aa and an inclined guide surface 16aa are provided on the peripheral portions of the cleaning parts 9a and 16a of the two cleaning members 9 and 16, and the inclined guide surface 9aa and the inclined guide surface 16aa guide the glass plate G Lead to the mutual between the two cleaning members 9,16. Thereby, glass plate G can enter between both cleaning members 9 and 16 easily in a cleaning process.

Next, the manufacturing method of the glass plate of this embodiment is demonstrated.

This manufacturing method includes, for example, a forming step, a slow cooling step, a panel cutting step, a cutting step, a cleaning step, an inspection step, and a packing step.

In the forming step, a glass ribbon is formed from molten glass by a known method such as an overflow down draw method or a float method.

In the slow cooling step, the formed glass ribbon is slowly cooled in order to reduce warpage and internal strain of the formed glass ribbon.

In the panel cutting step, the slow-cooled glass ribbon is cut in units of specified lengths to obtain multiple original glass panels.

In the cutting step, the original glass sheet is cut into a predetermined size to obtain one or more glass sheets G. As a method of cutting the original glass plate, for example, bending stress cutting, laser cutting, laser fusing, etc. can be used. The glass plate G is preferably rectangular.

In the cleaning process, the cleaning device 1 is used to clean the glass plate G while conveying it in a horizontal posture.

In the inspection step, it is inspected whether there is no damage, dust, dirt, etc. on the surface and/or internal defects such as air bubbles and foreign matter on the cleaned glass plate G. The inspection is performed using an optical inspection device such as a camera.

In the packing step, the glass plate G whose inspection result satisfies the required quality is packed. Packing is carried out by laminating a plurality of glass plates G in a horizontal arrangement or by laminating the glass plates G in a vertical arrangement with respect to a predetermined pallet. In this case, it is preferable to interpose the protective sheet which contains spacer paper, foamed resin, etc. between the lamination direction of glass plate G.

In addition, the manufacturing method may further include a heat treatment step after the panel cutting step, or further include an end surface processing step after the cutting step.

Next, the operation of the cleaning device 1 in the cleaning step will be described.

In the cleaning process, first, as shown in FIG. 4 , the glass plate G is conveyed in the conveyance direction (Y direction) from the upstream side of the cleaning device 1 . At this time, the cleaning member 9 of the upper surface cleaning mechanism 2 is placed on the cleaning member 16 of the lower surface cleaning mechanism 3 as the rotary shaft 8 descends due to the weight of the rotary cleaning body W, on standby. That is, in the standby state, both cleaning members 9, 16 are in contact with each other.

Then, when the glass plate G arrives at the two cleaning components 9, 16, as shown in Fig. 5 and Fig. 6, the glass plate G is entered into the two cleaning components 9, 16 in a manner that the two cleaning components 9, 16 are pushed away. each other.

Specifically, the cleaning member 9 of the upper surface cleaning mechanism 2 can move along the axial direction (up and down direction) of the rotating shaft 8 together with the rotating shaft 8 through the sliding support structure S. Therefore, when the glass plate G reaches both cleaning members 9 and 16, the cleaning member 9 of the upper surface cleaning mechanism 2 is pushed upward by the glass plate G in contact with the inclined guide surface 9aa (see FIG. 5 ). Thereby, the cleaning member 9 of the upper surface cleaning mechanism 2 covers the upper surface Ga of the glass plate G, moving upward together with the rotating shaft 8. As shown in FIG. After covering, the cleaning member 9 of the upper surface cleaning mechanism 2 continuously presses the upper surface Ga of the glass plate G downward by the lowering of the rotating shaft 8 due to the self-weight of the cleaning rotary unit W (see FIG. 6 ).

Furthermore, when the glass plate G withdraws from between the two cleaning members 9, 16, as shown in FIG. And again, it is placed on the cleaning member 16 of the lower surface cleaning mechanism 3 .

As described above, the rotary shaft 8 (cleaning rotary part W) of the upper surface cleaning mechanism 2 is movable in the vertical direction by the sliding support structure S. As shown in FIG. Therefore, the cleaning member 9 of the upper surface cleaning mechanism 2 automatically adjusts a height position so that it may follow the upper surface Ga of the glass plate G. As shown in FIG. Such actions also occur in each of the cleaning members 9 included in the upper surface cleaning mechanism 2 . Therefore, the contact state of each cleaning member 9 with the upper surface Ga of the glass plate G is stabilized, and the cleaning unevenness of the upper surface Ga of the glass plate G can be reliably reduced.

(Second Embodiment) As shown in FIG. 8 , the difference between the glass plate cleaning device 1 and the glass plate cleaning method of the second embodiment and the first embodiment is that the rotating cleaning body W of the upper surface cleaning mechanism 2 is provided with a detachable Heavy 21.

Specifically, the weight 21 is mounted on the support portion 9b of the cleaning member 9, and is detachably fixed to the support portion 9b by fastening members such as bolts.

The shape of the weight 21 is not particularly limited, but in the present embodiment is formed in an annular shape along the periphery of the disc-shaped cleaning portion 9a in plan view. Furthermore, the weight 21 is divided into multiple pieces (for example, in a semicircular ring shape) in the circumferential direction in consideration of mountability.

By providing the weight 21 in this way, the size of the self-weight of the rotary cleaning body W acting on the rotary shaft 8 can be adjusted. That is, the force of the rotating shaft 8 toward the upper surface Ga of the glass plate G can be adjusted. Therefore, there is an advantage that the contact state between the cleaning member 9 and the upper surface Ga of the glass plate G is very stable.

In addition, it is preferable that the weight 21 has a laminated structure in which a plurality of plate-shaped objects are stacked and arranged. In this way, the weight of the weight 21 can be easily adjusted by the number of laminated plates.

The weight 21 may be detachably installed on the rotating shaft 8 . The attachment position of the weight 21 is not particularly limited as long as it is within the range of the rotary cleaning body W.

The present invention is not limited to the structure of the above-described embodiment, and is not limited to the above-described operational effects. Various modifications can be made in the present invention without departing from the scope of the present invention.

In the above-described embodiment, the structure in which the cleaning liquid stored in the inner space of the support table is supplied to the glass plate via the rotating shaft and the cleaning member has been described, but the supply method of the cleaning liquid is not limited to this. For example, the washing liquid may be supplied by spraying the washing liquid onto the glass plate from a shower nozzle or the like. In other words, as long as the support table has a sliding support structure for supporting the rotating shaft, it may also include a structure for storing cleaning liquid.

In the above embodiment, the case where the cleaning member of the upper surface cleaning mechanism and the cleaning member of the lower surface cleaning mechanism are in contact with each other in the standby state without a glass plate has been described, but the present invention is not limited thereto. For example, in a standby state without a glass plate, a gap smaller than the thickness of the glass plate may be formed between the cleaning member of the upper surface cleaning mechanism and the cleaning member of the lower surface cleaning mechanism. That is, in the standby state without a glass plate, the cleaning member of the upper surface cleaning mechanism and the cleaning member of the lower surface cleaning mechanism may not contact each other. In this case, it is preferable that the rotating shaft of the upper surface cleaning mechanism is at the most downward protruding position (bottom dead center), and includes a stopper that engages with the sliding support structure (eg, shaft housing).

In the above-described embodiment, a case where a plurality of rotating shafts are supported by one support stand has been described, but it is also possible to provide a dedicated support stand for each of the rotating shafts.

In the above-mentioned embodiment, the case where the glass plate is moved relative to the cleaning member arranged at a fixed position has been described, but as long as there is relative movement between the cleaning member and the glass plate, either one may be moved. That is, the cleaning member may be moved with respect to the glass plate arranged at a fixed position, or both the glass plate and the cleaning member may be moved.

In the said embodiment, although the case where the upper and lower surfaces of a glass plate were washed simultaneously was demonstrated, it is also possible to wash only the upper surface of a glass plate.

In the above embodiment, when the glass plate is cleaned and conveyed, the glass plate may be inclined such that one end side is lower than the other end side in the width direction perpendicular to the conveyance direction. Thereby, excess liquid adhering to the upper surface of the glass plate can be prevented from dripping onto the upper surface of the glass plate due to its own weight and forming a liquid pool that causes stains on the upper surface of the glass plate.

1: Cleaning device 2: Upper surface cleaning mechanism 3: Bottom surface cleaning mechanism 4: cleaning solution 5: Support table 5a: Lifting device 6, 15: cleaning unit 7: Shaft housing 8: Rotation axis 9, 16: cleaning components 9a, 16a: cleaning part 9b, 16b: support part 9aa, 16aa: inclined guide surface 10, 11: Sliding bearings 10a, 11a: cylindrical part 10b, 11b: flange part 12: Rotary drive mechanism 13: gear mechanism 13a, 14b: gears 14: Drive Department 14a: Motor 21: heavy objects a, b, c: arrows D1, D2: Bottom protrusion G: glass plate Ga: upper surface Gb: lower surface L1, L2: cleaning columns R1: the first supply road R2: The second supply road R3: The third supply road S: sliding support structure U1, U2: Upper protrusion W: rotating cleaning body X, Y, Z: direction

Fig. 1 is a cross-sectional view showing a glass plate cleaning device according to a first embodiment. Fig. 2 is a plan view showing the glass plate cleaning device of Fig. 1 . Fig. 3 is an enlarged cross-sectional view showing the periphery of one cleaning unit included in the glass plate cleaning device of Fig. 1 . Fig. 4 is a side view for explaining a cleaning step using the glass plate cleaning device shown in Fig. 1 . Fig. 5 is a side view for explaining a cleaning step using the glass plate cleaning device shown in Fig. 1 . Fig. 6 is a side view for explaining a cleaning step using the glass plate cleaning device shown in Fig. 1 . Fig. 7 is a side view for explaining a cleaning step using the glass plate cleaning device shown in Fig. 1 . 8 is an enlarged cross-sectional view showing the periphery of one cleaning unit included in the glass plate cleaning device according to the second embodiment.

1: Cleaning device

2: Upper surface cleaning mechanism

3: Bottom surface cleaning mechanism

4: cleaning solution

5: Support table

6, 15: cleaning unit

7: Shaft housing

8: Rotation axis

9, 16: cleaning components

9a, 16a: cleaning part

9b, 16b: support part

9aa, 16aa: inclined guide surface

10, 11: Sliding bearings

10a, 11a: cylindrical part

10b, 11b: flange part

13a: gear

a, b, c: arrows

D1, D2: Bottom protrusion

R1: the first supply road

R2: The second supply road

R3: The third supply road

S: sliding support structure

U1, U2: Upper protrusion

W: rotating cleaning body

X, Z: direction

Claims (6)

A glass plate cleaning device for cleaning the main surface of a glass plate, the glass plate cleaning device is characterized in that it comprises: a rotary cleaning body having a cleaning member contacting the main surface of the glass plate and a rotating shaft connected to the cleaning member to rotate together with the cleaning member; and a supporting platform supporting the rotating shaft; The supporting table includes a sliding support structure that supports the rotating shaft so that the rotating shaft can move in the axial direction. The glass plate cleaning device according to claim 1, which includes a plurality of said rotating cleaning bodies, One support table includes a plurality of sliding support structures, and the plurality of sliding support structures supports the plurality of rotation shafts so that the plurality of rotation shafts can move along respective axial directions. The cleaning device for glass plates as described in claim 1 or claim 2, wherein The sliding support structure is configured such that the rotation shaft moves toward the main surface side of the glass plate by the weight of the rotary cleaning body. The cleaning device of glass plate as described in claim item 3, wherein The rotary cleaning body includes loadable and detachable weights. The cleaning device for a glass plate as described in any one of claim 1 to claim 4, wherein The sliding support structure includes a sliding bearing that supports the rotating shaft so as to be able to rotate the rotating shaft and move the rotating shaft in an axial direction. A method for manufacturing a glass plate, characterized by comprising: a cleaning step of cleaning the main surface of the glass plate using the glass plate cleaning device according to any one of claim 1 to claim 5 .