Seat support, and washing device and washing method of seat material

Abstract

To restrict damage to a seat material in a washing process.SOLUTION: A seat support 2 comprises: a frame 4; and a support wire 10 provided in the frame 4 to support a seat material GS. The frame 4 comprises: a first bar 5 and a second bar 6 facing each other; and side bars 9a, 9b coupling the first bar 5 and the second bar 6. The support wire 10 includes a plurality of support wires hung over the first bar 5 and the second bar 6. The support wire 10 supports one main surface GSa of the seat material GS.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sheet support for supporting a sheet material, a cleaning device for the sheet material, and a cleaning method.

Background Art

[0002] When manufacturing a glass sheet, a step of cleaning the glass sheet processed into a predetermined shape (cleaning step) is performed. For example, Patent Document 1 discloses a cleaning device used in the cleaning step, which includes a cleaning tank (water storage tank) for storing a cleaning liquid, a support (holder) for holding a glass substrate, and a swing mechanism for swinging the support.

[0003] The cleaning tank of the cleaning device is provided with an ultrasonic generator at its bottom. A base for supporting the swing mechanism is provided above the cleaning tank. The support has a frame shape or a box shape and is configured to hold a plurality of glass substrates. A fixing portion (10a) that is detachably fixed to the swing mechanism is provided above the support. The swing mechanism includes a motor provided on the base of the cleaning tank and a swing portion driven by the motor. The fixing portion of the support is fixed to the swing portion of the swing mechanism (see paragraphs 0006, 0007 and FIG. 1 of the same document).

[0004] In the cleaning step, the support holding a plurality of glass substrates is immersed in the cleaning liquid in the cleaning tank, and the glass substrates held by the support are cleaned by the vibration of the cleaning liquid by the ultrasonic generator and the swinging operation of the support by the swing mechanism (see FIG. 1 of the same document).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the conventional cleaning device as described above, for example, when cleaning an ultra-thin glass sheet with a thickness of 0.2 mm or less, it becomes difficult to prevent deformation or breakage of the glass sheet. That is, an ultra-thin glass sheet is likely to be greatly deformed and damaged when it is housed in a support tool, when the support tool housing the glass sheet is moved, or when cleaning is performed by vibrating the support tool.

[0007] The present invention has been made in view of the above circumstances, and aims to solve the technical problem of preventing breakage of a sheet material in a cleaning process.

Means for Solving the Problem

[0008] (1) The present invention is for solving the above problems, and is a sheet support tool including a frame and support wires provided on the frame for supporting a sheet material, wherein the frame includes a first bar and a second bar facing each other, and side bars connecting the first bar and the second bar, the support wires include a plurality of support wires spanned between the first bar and the second bar, and the support wires are configured to be able to support one main surface of the sheet material.

[0009] According to such a configuration, by supporting one main surface of the sheet material with the support wires spanned between the first bar and the second bar of the frame, breakage of the sheet material during cleaning can be prevented. That is, since the support wires support one main surface of the sheet material, even when the sheet support tool vibrates, the ends of the sheet material are not impacted. Thereby, breakage of the sheet material in the cleaning process can be effectively prevented.

[0010] (2) In the sheet support tool according to (1) above, it may further include a third bar facing the first bar, and a plurality of regulating wires spanned between the first bar and the third bar and regulating the movement of the sheet, and may have an accommodation space in which the sheet material can be inserted and removed between the support wires and the regulating wires.

[0011] According to such a configuration, the accommodation space formed between the regulating wire and the support wire can accommodate the sheet material without damaging it. That is, the regulating wire can prevent damage to the sheet material by coming into contact with the sheet material when the sheet material attempts to deform significantly and regulating the deformation of the sheet material.

[0012] (3) In the sheet support according to (2) above, the distance from the axis of the first bar to the axis of the third bar is shorter than the distance from the axis of the first bar to the axis of the second bar, and the regulating wire may be shorter than the support wire.

[0013] According to such a configuration, when inserting and removing the sheet material with respect to the accommodation space, the regulating wire does not get in the way.

[0014] (4) In the sheet support according to any one of (1) to (3) above, further comprising an end support body that supports the lower end portion of the sheet material, the end support body may fix each of the support wire and the regulating wire in a state where the support wire and the regulating wire are separated from each other and support the sheet material.

[0015] According to such a configuration, the support wire and the end support body can support the sheet material so as not to damage it.

[0016] (5) In the sheet support according to (4) above, the end support body includes a support portion that supports the lower end portion of the sheet material, and the support portion may be constituted by an elastic body.

[0017] According to such a configuration, by supporting the lower end portion of the sheet material with the support portion constituted as an elastic body, damage to the lower end portion of the sheet material can be effectively prevented.

[0018] (6) In the sheet support according to (2) or (3) above, the third bar is attached to the side bar, and the third bar may be fixed to the side bar so as to be position-changeable.

[0019] According to such a configuration, by changing the position of the third bar with respect to the side bar, it becomes possible to adjust the length of the regulating wire spanned between the first bar and the third bar. Thereby, the regulating wire can be set to a suitable length according to the size of the sheet material.

[0020] (7) In the sheet support according to the above (2) or (3), the support wire and the regulating wire may be made of a synthetic resin.

[0021] According to such a configuration, it is possible to prevent damage to the sheet material caused by contact between the support wire and the regulating wire.

[0022] (8) In the sheet support according to any one of the above (1) to (7), the support wire may be wound around the second bar.

[0023] According to such a configuration, the support wire can be easily fixed to the second bar without using a fixture for fixing the support wire to the second bar.

[0024] (9) In the sheet support according to the above (2) or (3), the regulating wire may be wound around the third bar.

[0025] According to such a configuration, the regulating wire can be easily fixed to the third bar without using a fixture for fixing the regulating wire to the third bar.

[0026] (10) In the sheet support according to the above (2) or (3), the support wire and the regulating wire may be wound around the first bar.

[0027] According to such a configuration, each wire can be easily fixed to the first bar without using a fixture for fixing the support wire and the regulating wire to the first bar.

[0028] (11) The present invention is for solving the above problems, and is a cleaning device for a sheet material, comprising the sheet support described in the above (2) or (3), and a cleaning tank capable of accommodating the sheet support and a cleaning liquid, further comprising a fourth bar fixed to the cleaning tank, wherein the third bar is located on the front side of the frame, and the fourth bar is located on the back side of the frame.

[0029] According to such a configuration, the frame of the sheet support can be easily and surely fixed to the cleaning tank by the fourth bar.

[0030] (12) The cleaning device for a sheet material according to the present invention is for solving the above problems, and is characterized by comprising the sheet support described in any one of the above (1) to (10), and a cleaning tank capable of accommodating the sheet support and a cleaning liquid.

[0031] According to such a configuration, by immersing the sheet support for supporting the sheet material in the cleaning liquid of the cleaning tank, the sheet material can be cleaned without being damaged.

[0032] (13) The cleaning device for a sheet material described in the above (12) may further comprise a support device for supporting the frame of the sheet support in an inclined posture.

[0033] According to such a configuration, by supporting the frame in an inclined posture by the support device, the sheet material can be supported in an inclined posture by this frame. Thereby, the sheet material can be cleaned in a stable posture.

[0034] (14) In the cleaning device for a sheet material described in any one of the above (11) to (13), the cleaning tank may further comprise an ultrasonic generating part for generating ultrasonic waves.

[0035] According to such a configuration, by vibrating the cleaning liquid, the frame and the glass sheet by the ultrasonic waves emitted from the ultrasonic generating part, the glass sheet can be suitably cleaned.

[0036] (15) The present invention is for solving the above problems, and is a method for cleaning a sheet material using the cleaning device described in any one of (11) to (14) above, characterized in that a glass sheet having a thickness of 0.2 mm or less is used as the sheet and is cleaned with the cleaning liquid.

[0037] According to such a configuration, even a glass sheet having a thickness of 0.2 mm or less can be cleaned without being damaged.

Effects of the Invention

[0038] According to the present invention, it is possible to prevent damage to the sheet material in the cleaning process.

Brief Description of the Drawings

[0039]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Embodiments for Carrying Out the Invention

[0040] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIGS. 1 to 14 show an embodiment of a sheet support, a cleaning device for a sheet material, and a cleaning method according to the present invention.

[0041] As shown in FIGS. 1 and 2, the cleaning device 1 includes a sheet support 2 for supporting a sheet material, and a cleaning tank 3 capable of accommodating the sheet support 2 and a cleaning liquid CL. In the present embodiment, a rectangular glass sheet GS is exemplified as the sheet material, but the shape and material of the sheet material are not limited to the present embodiment. The thickness of the glass sheet GS is, for example, 0.01 mm or more and 0.2 mm or less. The length of one side of the glass sheet GS is, for example, 100 mm or more and 1000 mm or less.

[0042] The sheet support 2 has a rectangular frame 4 for supporting the glass sheet GS. The frame 4 includes a first bar 5, a second bar 6 facing the first bar 5, a third bar 7 facing the first bar 5, a fourth bar 8 for fixing the frame 4 to the cleaning tank 3, and side bars 9a, 9b connecting the first bar 5 and the second bar 6.

[0043] The sheet support 2 further includes a plurality of support wires 10 spanned between the first bar 5 and the second bar 6, a plurality of regulating wires 11 spanned between the first bar 5 and the third bar 7, and a plurality of end supports 12 for supporting the lower end portion GSb of the glass sheet GS.

[0044] As shown in FIG. 1, the first bar 5, the second bar 6, the third bar 7, and the fourth bar 8 extend in parallel along the horizontal direction. Each of the bars 5 to 8 is configured as a synthetic resin tube having a circular cross-section, but the shape and material of each of the bars 5 to 8 are not limited to the present embodiment. In the following description, the direction along the longitudinal direction of each of the bars 5 to 8 may be referred to as the "width direction".

[0045] As shown in FIG. 1, the side bars 9a and 9b include a first side bar 9a that connects one end of the first bar 5 and one end of the second bar 6, and a second side bar 9b that connects the other end of the first bar 5 and the other end of the second bar 6. The first side bar 9a and the second side bar 9b are configured to be parallel along the vertical direction. Each of the side bars 9a and 9b is composed of a synthetic resin tube having a circular cross-section, but the shape and material of the side bars 9a and 9b are not limited to this embodiment.

[0046] The first bar 5 is located at the lowermost part of the frame 4, and the second bar 6 is located at the uppermost part of the frame 4.

[0047] The third bar 7 is located between the first bar 5 and the second bar 6 in the vertical direction. That is, the third bar 7 is provided at a position lower than the second bar 6 in the vertical direction. The fourth bar 8 is located between the first bar 5 and the third bar 7 in the vertical direction.

[0048] The distance from the axis of the first bar 5 to the axis of the third bar 7 in the vertical direction is shorter than the distance from the axis of the first bar 5 to the axis of the second bar 6 in the vertical direction. Therefore, the regulating wire 11 spanned between the first bar 5 and the third bar 7 is shorter than the support wire 10 spanned between the first bar 5 and the second bar 6. The length dimensions of the support wire 10 and the regulating wire 11 are larger than the length dimension of the glass sheet GS in the vertical direction.

[0049] As shown in FIG. 3, the third bar 7 is located on the front side of the frame 4, and the fourth bar 8 is located on the back side of the frame 4.

[0050] The third bar 7 is attached to the side bars 9a and 9b via the fixture 13. The length dimension of the third bar 7 is preferably larger than the interval between the first side bar 9a and the second side bar 9b so that the third bar 7 can be fixed to the side bars 9a and 9b by the fixture 13.

[0051] The fixture 13 of the third bar 7 fixes the third bar 7 to the side bars 9a and 9b so that the position of the third bar 7 with respect to the longitudinal direction of the side bars 9a and 9b can be changed. The fixture 13 includes a pair of fixtures that support one end and the other end of the third bar 7. As shown in FIG. 3, the fixture 13 has an annular portion 15 attached to the side bars 9a and 9b and a support portion 16 protruding from the annular portion 15.

[0052] The annular portion 15 is configured in an annular shape so that the side bars 9a and 9b can be inserted therethrough. The annular portion 15 has a threaded hole penetrating in its thickness direction. A fixing member 17 such as a bolt is attached to this threaded hole. The fixing member 17 contacts the surface of the side bars 9a and 9b inside the annular portion 15 through this threaded hole. The annular portion 15 can move (slide) along the longitudinal direction of the side bars 9a and 9b by releasing the fixation by the fixing member 17. Thereby, the position of the annular portion 15 in the longitudinal direction (vertical direction) of the side bars 9a and 9b can be adjusted according to the size of the glass sheet GS.

[0053] As shown in FIG. 3, the support portion 16 of the fixture 13 protrudes from the annular portion 15 toward the front side of the frame 4. The support portion 16 is constituted by a long plate member, but the shape of the support portion 16 is not limited to this embodiment. The support portion 16 has a hole through which the third bar 7 can be inserted. The third bar 7 is supported by each fixture 13 by inserting one end and the other end thereof into the holes of the respective support portions 16 engaged with the pair of fixtures 13.

[0054] The length dimension of the fourth bar 8 is larger than the interval in the width direction between the first side bar 9a and the second side bar 9b. That is, as shown in FIG. 1, each end portion of the fourth bar 8 protrudes outward in the width direction from each of the side bars 9a and 9b. The length dimension of the fourth bar 8 is preferably equal to or greater than the width dimension of the cleaning tank 3 so that the end portions of the fourth bar 8 are bridged over the upper portion of the cleaning tank 3.

[0055] The fourth bar 8 is attached to the side bars 9a, 9b via the fixture 14. The fixture 14 of the fourth bar 8 includes a pair of fixtures that support one end and the other end of the fourth bar 8. The fixture 14 has an annular portion 18 to be attached to the side bars 9a, 9b and a support portion 19 protruding from the annular portion 18.

[0056] The annular portion 18 has a threaded hole penetrating in its thickness direction. A fixing member 20 such as a bolt is attached to this threaded hole. The fixing member 20 is in contact with the surfaces of the side bars 9a, 9b inside the annular portion 18 through this threaded hole. The annular portion 18 can move (slide) along the longitudinal direction of the side bars 9a, 9b by releasing the fixing by the fixing member 20. Thereby, the position of the annular portion 18 in the longitudinal direction (vertical direction) of the side bars 9a, 9b can be adjusted according to the size of the glass sheet GS.

[0057] As shown in FIG. 3, the support portion 19 of the fixture 14 protrudes from the annular portion 18 toward the back side of the frame 4. The support portion 19 of the fixture 14 is constituted by a long plate member, but the shape of the support portion 19 is not limited to this embodiment. The support portion 19 has a hole through which the fourth bar 8 can be inserted. The fourth bar 8 is supported by each fixture 14 by inserting one end and the other end thereof into the holes of the respective support portions 19 engaged with the pair of fixtures 14.

[0058] As shown in FIG. 1, the support wire 10 is bridged between the first bar 5 and the second bar 6 so as to be parallel to the side bars 9a, 9b in a front view. Not limited to this, the support wire 10 may be provided so as to be inclined with respect to the side bars 9a, 9b. Similarly, the regulation wire 11 is bridged between the first bar 5 and the third bar 7 so as to be parallel to the side bars 9a, 9b in a front view. The regulation wire 11 may be provided so as to be inclined with respect to the side bars 9a, 9b.

[0059] As shown in FIGS. 4 and 5, the support wire 10 is configured to support one main surface GSa of the glass sheet GS. The support wire 10 is preferably made of a synthetic resin, but the material of the support wire 10 is not limited to this embodiment. The support wire 10 is supported by the second bar 6 by winding a single wire around the second bar 6. Thereby, the support wire 10 includes a first portion 10a that contacts the glass sheet GS and a second portion 10b that is located behind the first portion 10a and does not contact the glass sheet GS.

[0060] The regulating wire 11 is for regulating the movement of the glass sheet GS so that it contacts the glass sheet GS when the glass sheet GS is deformed and the glass sheet GS does not deform further. The regulating wire 11 is preferably made of a synthetic resin, but the material of the regulating wire 11 is not limited to this embodiment.

[0061] In this embodiment, the number of the regulating wires 11 is equal to the number of the support wires 10, but is not limited thereto, and may be different from the number of the support wires 10. The position of the regulating wire 11 in the width direction coincides with the position of the support wire 10 in the width direction, but is not limited thereto, and the position of the regulating wire 11 in the width direction and the position of the support wire 10 in the width direction may be different.

[0062] As shown in FIGS. 4 and 5, the regulating wire 11 is supported by the third bar 7 by winding a single wire around the third bar 7. Thereby, the regulating wire 11 has a first portion 11a that can contact the glass sheet GS and a second portion 11b that does not contact the glass sheet GS.

[0063] As shown in FIGS. 4 and 5, the first portion 10a of the support wire 10 and the first portion 11a of the regulating wire 11 are configured to face each other. With this configuration, a housing space S into which the glass sheet GS can be inserted and removed is formed between the first portion 10a of the support wire 10 and the first portion 11a of the regulating wire 11.

[0064] The accommodation space S for the glass sheet GS is formed by the first portion 10a of the support wire 10 and the first portion 11a of the regulating wire 11 making a predetermined angle θ1. This angle θ1 is preferably 5° or more and 10° or less. With this configuration, the distance between the support wire 10 and the regulating wire 11 gradually decreases downward (as going from the second bar 6 toward the first bar 5). That is, the accommodation space S is configured to easily accommodate the glass sheet GS and, after the glass sheet GS is accommodated, can minimize the deformation of the lower end portion GSb of the glass sheet GS as much as possible.

[0065] The support wire 10A and the regulating wire 11A located most outward in the width direction of the frame 4 have a different fixing method to the second bar 6 and the third bar 7 from that of the other wires 10, 11. That is, the support wires 10 and the regulating wires 11 located in the middle of the width direction had the first portions 10a, 11a and the second portions 10b, 11b in the examples shown in FIGS. 4 and 5, but the support wire 10A and the regulating wire 11A located most outward in the width direction have only the first portions 10a, 11a as shown in FIG. 6.

[0066] That is, in the example shown in FIG. 6, the ends of the respective wires 10A, 11A are wound around the second bar 6 and the third bar 7, and then, in the vicinity of the second bar 6 and the third bar 7, these ends are tied to the middle portions of the respective wires 10A, 11A.

[0067] As a result, in the support wire 10A and the regulating wire 11A located most outward in the width direction of the frame 4, the angle θ2 formed by the first portion 10a of the support wire 10A and the first portion 11a of the regulating wire 11A is larger than the above angle θ1 (θ2 > θ1).

[0068] According to this configuration, when the glass sheet GS is accommodated in the sheet support 2, even if the glass sheet GS is bent and the position of the end portion in the width direction of the glass sheet GS changes, the glass sheet GS can be suitably accommodated in the accommodation space S.

[0069] As shown in FIG. 7, the end support 12 is provided at the lower part of the frame 4. Specifically, the end support 12 is provided above the first bar 5 at a position in the vicinity of the first bar 5. In the present embodiment, the number of end supports 12 is equal to the number of support wires 10 or the number of regulating wires 11, but is not limited thereto, and may be less than the number of each of the wires 10 and 11.

[0070] The end support 12 has a structure into which the support wire 10 and the regulating wire 11 can be inserted. The end support 12 has a first support portion 21 that supports the lower end portion GSb of the glass sheet GS, and a second support portion 22 that supports the first support portion 21.

[0071] The first support portion 21 is formed in a disc shape by an elastic body such as rubber, but the material and shape of the first support portion 21 are not limited to this embodiment. The first support portion 21 has a first insertion hole 23 through which the support wire 10 is inserted, a second insertion hole 24 through which the regulating wire 11 is inserted, and a support surface 25 that supports the lower end portion GSb of the glass sheet GS.

[0072] The first insertion hole 23 and the second insertion hole 24 are formed in the first support portion 21 at a predetermined interval so that the support wire 10 and the regulating wire 11 do not come into contact with each other. This interval is preferably larger than the thickness of the glass sheet GS.

[0073] With this configuration, the first support portion 21 fixes each of the support wire 10 and the regulating wire 11 in a state where the support wire 10 and the regulating wire 11 are separated from each other. In other words, the support wire 10 and the regulating wire 11 are supported by the frame 4 and the end support 12 without crossing each other above the end support 12.

[0074] The support surface 25 is at the central part of the first support portion 21 and is formed between the first insertion hole 23 and the second insertion hole 24.

[0075] The second support portion 22 is formed in a cylindrical shape by synthetic resin or metal, but the material and shape of the second support portion 22 are not limited to this embodiment. The second support portion 22 is connected to the lower part of the first support portion 21. The second support portion 22 can insert the support wire 10 inserted into the first insertion hole 23 of the first support portion 21 and the regulation wire 11 inserted into the second insertion hole 24 together. The lower part of the second support portion 22 has an opening so that the support wire 10 and the regulation wire 11 can be led out to the outside.

[0076] As shown in FIG. 7, the lower part of the support wire 10 and the lower part of the regulation wire 11 are fixed to the first bar 5. By connecting the first part 10a and the second part 10b of the support wire 10 to the first bar 5, the support wire 10 can be interposed between the first bar 5 and the second bar 6 in a state where tension acts. Also, by connecting the first part 11a and the second part 11b of the regulation wire 11 to the first bar 5, the regulation wire 11 can be interposed between the first bar 5 and the third bar 7 in a state where tension acts.

[0077] The support wire 10 can move the portion wound around the first bar 5 along the longitudinal direction of the first bar 5. Similarly, the support wire 10 can move the portion wound around the second bar 6 along the longitudinal direction of the second bar 6. That is, the support wire 10 can change its position in the width direction. Thereby, the interval between the plurality of support wires 10 can be adjusted according to the size and thickness of the glass sheet GS.

[0078] Similarly, the regulation wire 11 can move the portion wound around the first bar 5 and the portion wound around the third bar 7 in the width direction. Thereby, the position and interval of the regulation wire 11 in the width direction can be adjusted.

[0079] FIG. 8 shows another example of the end support 12. In this example, the first support portion 21 of the end support 12 has an annular body 26 made of an elastic body such as rubber. The annular body 26 has a hole 26a through which the support wire 10 and the regulating wire 11 can be inserted at the central portion. In this example, a part of the upper surface of the annular body 26 serves as a support surface 25 that supports the lower end portion GSb of the glass sheet GS.

[0080] As shown in FIG. 2, the cleaning tank 3 can accommodate a plurality of sheet supports 2. The cleaning tank 3 includes an ultrasonic generating unit 3a that generates ultrasonic waves, and support devices 27a and 27b that support the frame 4 in an inclined posture.

[0081] The ultrasonic generating unit 3a is provided at the lower part of the cleaning tank 3, but the position and number of the ultrasonic generating unit 3a are not limited to this embodiment.

[0082] As shown in FIG. 1, the support devices 27a and 27b include a first support device 27a that supports one end portion of the fourth bar 8, and a second support device 27b that supports the other end portion of the fourth bar 8.

[0083] As shown in FIG. 9, each of the support devices 27a and 27b includes a pressing member 28 that contacts the fourth bar 8 of the frame 4, fixing members 29a to 29b that fix the pressing member 28 to the cleaning tank 3, and a support base 30 that supports the fourth bar 8 and the pressing member 28.

[0084] The pressing member 28 has a pressing portion 31 that contacts the fourth bar 8 and a fixing portion 32 that is fixed to the cleaning tank 3. The pressing portion 31 is configured in a curved shape (arc shape) so as to correspond to the shape of the fourth bar 8. The pressing portion 31 has a through hole (hereinafter referred to as "first through hole") 31a into which the fixing member 29a enters at its top. The first through hole 31a is constituted by a threaded hole.

[0085] The fixing portion 32 is a pair of flat plate-like portions integrally provided at one end portion and the other end portion of the pressing portion 31. Each fixing portion 32 has a pair of through holes (hereinafter referred to as "second through hole" and "third through hole") 32a and 32b into which the fixing members 29b and 29c enter.

[0086] The fixing members 29a to 29c include a first fixing member 29a that fits into the first through-hole 31a, a second fixing member 29b that fits into the second through-hole 32a, and a third fixing member 29c that fits into the third through-hole 32b. Each of the fixing members 29a to 29c is constituted by a screw member such as a bolt having a male screw portion.

[0087] As shown in FIG. 9, the end portion of the first fixing member 29a contacts the outer surface of the fourth bar 8 located inside the pressing portion 31 through the first through-hole 31a. The second fixing member 29b and the third fixing member 29c fix the fixing portion 32 to the support base 30 through the second through-hole 32a and the third through-hole 32b. Thereby, the fourth bar 8 can be fixed to the support base 30 so that the frame 4 is in an inclined posture.

[0088] The support base 30 is provided at the upper part of the wall portion in the cleaning tank 3. The support base 30 has a support surface 30a that contacts the fourth bar 8 of the frame 4 and the support devices 27a, 27b. The support surface 30a has a plurality of screw holes 30b, 30c into which the second fixing member 29b and the third fixing member 29c are inserted.

[0089] FIG. 10 shows another example of the support devices 27a, 27b. In this example, the support devices 27a, 27b do not have the first through-hole 31a and the first fixing member 29a in the example of FIG. 9. The support devices 27a, 27b can fix the fourth bar 8 to the support base 30 by pressing the fourth bar 8 by a pair of fixing members (second fixing member 29b and third fixing member 29c) inserted into the through-holes 32a, 32b of the pair of fixing portions 32 of the pressing member 28 and the pressing portion 31.

[0090] Hereinafter, a method for cleaning the glass sheet GS using the above-described cleaning device 1 will be described.

[0091] This method includes a preparation step and a cleaning step. The preparation step includes a housing step of housing the glass sheet GS in the sheet support 2, an immersion step of immersing the sheet support 2 housing the glass sheet GS in the cleaning liquid CL housed in the cleaning tank 3, and a fixing step of fixing the sheet support 2 to the cleaning tank 3.

[0092] As shown in FIG. 11, in the housing step, the glass sheet GS is housed in the housing space S formed in the frame 4. In the housing step, as shown by the solid line in FIG. 11, the glass sheet GS is lowered from above the frame 4, and its lower end GSb is brought into contact with the support wire 10 (the first portion 10a) of the frame 4. Then, the lower end GSb of the glass sheet GS is slid with respect to the support wire 10 and moved downward. That is, in the housing step, the support wire 10 functions as a guide portion for guiding the glass sheet GS into the housing space S. By bringing the lower end GSb of the glass sheet GS into contact with the support surface 25 of the end support 12, the housing step is completed. Thereby, the glass sheet GS is in a state where one main surface GSa is supported by the support wire 10 and the lower end GSb is supported by the end support 12 (the state shown by the two-dot chain line in FIG. 11).

[0093] As shown in FIG. 12, in the immersion step, the frame 4 housing the glass sheet GS is moved downward from a position above the cleaning tank 3. Thereby, the frame 4 is immersed in the cleaning liquid CL in the cleaning tank 3 from its lower part (the first bar 5).

[0094] As shown in FIG. 13, in the immersion step, in the process of immersing the frame 4 in the cleaning liquid CL, a part of the glass sheet GS may float and deform. In this case, the regulating wire 11 of the frame 4 contacts a part of the deformed glass sheet GS and prevents excessive deformation of the glass sheet GS. Thereby, it is possible to surely prevent breakage of the glass sheet GS due to deformation. The frame 4 descends in the cleaning tank 3 until the fourth bar 8 contacts the support bases 30 of the support devices 27a, 27b.

[0095] As shown in FIG. 14, in the fixing step, the fourth bar 8 of the frame 4 is brought into contact with the support surface 30a on the support base 30 of the cleaning tank 3. Then, the pressing member 28 is overlapped on the fourth bar 8. As a result, the pressing portion 31 of the pressing member 28 comes into contact with the fourth bar 8, and the fixing portion 32 of the pressing member 28 comes into contact with the support surface 30a of the support base 30. Then, the second through hole 32a and the third through hole 32b of the fixing portion 32 are aligned with a pair of screw holes 30b, 30c of the support base 30, and the second fixing member 29b and the third fixing member 29c are inserted into the through holes 32a, 32b and the screw holes 30b, 30c, respectively. Thereby, the pressing member 28 is fixed to the support base 30.

[0096] Thereafter, as shown in FIG. 9, the frame 4 is set in an inclined posture, the first fixing member 29a is inserted into the first through hole 31a of the pressing member 28, and the fourth bar 8 is fixed. As described above, the frame 4 is supported by the support devices 27a and 27b while maintaining the inclined posture. In this case, the inclination angle θ (see FIG. 2) of the frame 4 (side bars 9a and 9b) with respect to the vertical direction is preferably 65° or more and 85° or less. As a result, the entire glass sheet GS accommodated in the frame 4 is immersed in the cleaning liquid CL in the cleaning tank 3 while being supported by the frame 4 in the inclined posture.

[0097] In the cleaning step, the ultrasonic generator 3a of the cleaning tank 3 is started, and the glass sheet GS supported by the sheet support 2 is cleaned with the cleaning liquid CL.

[0098] When the cleaning step is completed, the fixing of the frame 4 by the support devices 27a and 27b is released, and the frame 4 is removed from the cleaning tank 3 together with the glass sheet GS.

[0099] According to the present embodiment described above, the support wire 10 of the sheet support 2 has an extremely small contact area with the glass sheet GS and does not apply a large impact to the glass sheet GS. Moreover, since the support wire 10 contacts only one main surface GSa without contacting the side end portion of the glass sheet GS, a large impact is not applied to the side end portion of the glass sheet GS. Thus, by supporting the glass sheet GS with the support wire 10, breakage of the main surface and end portions of the glass sheet GS in the preparation step and the cleaning step can be effectively prevented.

[0100] Furthermore, by configuring the first support portion 21 of the end support 12 of the sheet support 2 with an elastic body, the lower end portion GSb of the glass sheet GS can be suitably supported without being damaged.

[0101] Note that the present invention is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described operational effects. The present invention can be variously modified without departing from the gist of the present invention.

[0102] In the above embodiment, the support wire 10 and the regulating wire 11 were fixed by winding them around the first bar 5, but the present invention is not limited to this configuration. The support wire 10 and the regulating wire 11 may be fixed to the first bar 5 by adhesion or welding, or by pins or screw members. Further, a through hole may be formed in the first bar 5, and the support wire 10 and the regulating wire 11 may be inserted through this through hole to fix each wire 10, 11 to the first bar 5. By these fixing methods, the support wire 10 may be fixed to the second bar 6, and the regulating wire 11 may be fixed to the third bar 7.

Explanation of Reference Numerals

[0103] 1 Cleaning device 2 Sheet support 3 Cleaning tank 3a Ultrasonic generating unit 4 Frame 5 First bar 6 Second bar 7 Third bar 8 Fourth bar 9a First side bar 9b Second side bar 10 Support wire 11 Regulation wire 12 End support 21 First support portion of the end support 27a First support device 27b Second support device CL Cleaning liquid GS Glass sheet GSa One main surface of the glass sheet GSb Lower end portion of the glass sheet S Accommodation space

Claims

1. A sheet support device comprising a frame and a support wire provided on the frame for supporting a sheet material, The frame includes a first bar and a second bar facing each other, and a side bar connecting the first bar and the second bar, The support wire includes a plurality of support wires that are spanned between the first bar and the second bar, The support wire is configured to be able to support one main surface of the sheet material.

2. A third bar opposite the first bar; a plurality of restricting wires that are stretched across the first bar and the third bar and restrict movement of the seat; The sheet support tool according to claim 1 , further comprising an accommodation space between the support wire and the restriction wire, into which the sheet material can be inserted and removed.

3. A distance from the axis center of the first bar to the axis center of the third bar is shorter than a distance from the axis center of the first bar to the axis center of the second bar, The seat support device according to claim 2 , wherein the restraining wire is shorter than the supporting wire.

4. Further comprising an end support for supporting a lower end of the sheet material, The sheet support device according to claim 1 , wherein the end support fixes each of the support wire and the restricting wire in a state in which the support wire and the restricting wire are spaced apart, and supports the sheet material.

5. The end support member includes a support portion that supports the lower end portion of the sheet material, The seat support according to claim 4 , wherein the support portion is made of an elastic material.

6. the third bar is attached to the side bar; The seat support device according to claim 2 or 3, wherein the third bar is fixed to the side bar so that its position can be changed.

7. The seat support tool according to claim 2 or 3, wherein the supporting wire and the restricting wire are made of a synthetic resin.

8. 4. A seat support as claimed in any one of claims 1 to 3, wherein the support wire is wound around the second bar.

9. The seat support device according to claim 2 or 3, wherein the restricting wire is wound around the third bar.

10. The seat support device according to claim 2 or 3, wherein the support wire and the regulating wire are wound around the first bar.

11. The seat support according to claim 2 or 3, A sheet material cleaning device comprising the sheet support and a cleaning tank capable of containing a cleaning liquid, Further comprising a fourth bar fixed to the cleaning tank; the third bar is located on the front side of the frame, A sheet material cleaning device, wherein the fourth bar is positioned on the rear side of the frame.

12. A seat support according to any one of claims 1 to 3; A sheet material cleaning device comprising the sheet support and a cleaning tank capable of containing cleaning liquid.

13. The sheet material cleaning apparatus according to claim 11 , further comprising a support device that supports the frame of the sheet support in an inclined position.

14. The sheet cleaning device according to claim 11 , wherein the cleaning tank includes an ultrasonic generator that generates ultrasonic waves.

15. A method for cleaning a sheet material using the cleaning device according to claim 14, comprising the steps of: The sheet material cleaning method includes cleaning a glass sheet having a thickness of 0.2 mm or less with the cleaning liquid.

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