Non-contact glass carrying device

Abstract

The utility model relates to a non-contact type glass carrying device. The non-contact type glass carrying device comprises a first adjusting assembly and a second adjusting assembly. The second adjusting assembly is movably installed on the first adjusting assembly and comprises a first moving structure and a second moving structure, the first moving structure comprises a first clamping jaw and a first suction cup, the second moving structure comprises a second clamping jaw and a second suction cup, and the first clamping jaw and the second clamping jaw are located on the same side of glass. The first suction cup and the second suction cup are located on the other side of the glass and have a carrying state close to the glass or a non-carrying state away from the glass, and in the carrying state, the first suction cup and the second suction cup are spaced from the glass. According to the technical scheme, the problem that in the prior art, an AG coating is prone to being damaged when glass coated with the AG solution is carried is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of AG coating processing, and in particular to a non-contact glass handling device. Background Art

[0002] In the production and manufacturing process of car screens in the LCD panel industry, one of the processes is AG spraying. When the screen is still glass, a layer of AG solution is sprayed on the glass surface to make the car screen anti-reflective or anti-glare. However, after spraying the AG solution, a thin layer is formed on the glass surface. At this time, any surface contact will destroy the AG film on the glass surface, which brings great difficulties to the transportation of glass. The traditional transportation method is manual transportation. How to design non-contact glass tooling to improve production efficiency is an issue that needs to be solved urgently.

[0003] The existing transport device (for example, the authorization announcement number is CN 215515031U, and the name is: A slot-type multi-layer fixing frame for AG glass transportation) is provided with a clamping component and an isolation component, so that the fixing frame can isolate multiple AG glasses and has a certain shock absorption effect, thereby avoiding collision and friction between AG glasses during transportation. However, this transport device has a large contact area with the AG glass, which is easy to damage the AG coating on the surface of the AG glass. Utility Model Content

[0004] The present application provides a non-contact glass handling device to solve the problem in the prior art that the AG coating is easily damaged when the glass coated with AG solution is handled.

[0005] According to the present application, a non-contact glass handling device is provided, comprising: a first adjustment component and a second adjustment component. The second adjustment component is movably mounted on the first adjustment component, the second adjustment component comprises a first moving structure and a second moving structure, the first moving structure comprises a first clamp and a first suction cup, the second moving structure comprises a second clamp and a second suction cup, the first clamp and the second clamp are located on the same side of the glass, the first suction cup and the second suction cup are located on the other side of the glass, the first suction cup and the second suction cup have a handling state close to the glass, or a non-handling state away from the glass, and in the handling state, the first suction cup and the second suction cup are spaced apart from the glass.

[0006] In some embodiments, the first movable structure also includes a first movable seat, a first adjustment screw and a first movable nut. The first adjustment screw is installed on the first movable seat. The first adjustment screw has a first left-handed section and a first right-handed section. The first movable nut has multiple groups, and the first movable nut is respectively engaged with the first left-handed section and the first right-handed section.

[0007] In some embodiments, the first movable structure also includes a first drive motor and a first connecting member, the output shaft of the first drive motor is connected to the first adjustment screw, the first movable nut is connected to the first connecting member, and the first clamp and the first suction cup are installed on the first connecting member.

[0008] In some embodiments, the second movable structure also includes a second movable seat, a second adjustment screw and a second movable nut. The second adjustment screw is installed on the second movable seat. The second adjustment screw has a second left-handed section and a second right-handed section. The second movable nut has multiple groups, and the second movable nut is respectively engaged with the second left-handed section and the second right-handed section.

[0009] In some embodiments, the second movable structure also includes a second drive motor and a second connecting member, the output shaft of the second drive motor is connected to the second adjustment screw, the second movable nut is connected to the second connecting member, and the second clamp and the second suction cup are installed on the second connecting member.

[0010] In some embodiments, the second adjustment assembly further includes a third movable structure, the third movable structure is movably mounted on the first adjustment assembly, and the first movable structure is movably mounted on the third movable structure.

[0011] In some embodiments, the third movable structure includes a third movable seat, a third drive motor, a third adjustment screw and a third movable nut. The third drive motor is installed on the third movable seat, the output shaft of the third drive motor is connected to the third adjustment screw, and the third movable nut is engaged with the third adjustment screw.

[0012] In some embodiments, the first adjustment component includes a fourth movable seat, a fourth drive motor, a fourth adjustment screw and a fourth movable nut. The fourth drive motor and the fourth adjustment screw are both installed on the fourth movable seat. The output shaft of the fourth drive motor is connected to the fourth adjustment screw. The fourth adjustment screw has a third left-handed section and a third right-handed section. The fourth movable nut has multiple groups, and the fourth movable nut is respectively engaged with the third left-handed section and the third right-handed section.

[0013] In some embodiments, the fourth movable nut is connected to the third movable structure and the second movable structure respectively.

[0014] In some embodiments, the first movable structure also includes a first air nozzle, and the second movable structure also includes a second air nozzle. Both the first air nozzle and the second air nozzle are facing towards the direction close to the glass. The first air nozzle is installed on the first movable seat, and the second air nozzle is installed on the second movable seat.

[0015] The technical solution of the present application is applied to a non-contact glass handling device, comprising: a first adjustment component and a second adjustment component. The second adjustment component is movably mounted on the first adjustment component, so that the second adjustment component can be adaptively adjusted according to the size of the glass, so as to facilitate the handling of the glass. The second adjustment component comprises a first moving structure and a second moving structure, the first moving structure comprises a first clamp and a first suction cup, the second moving structure comprises a second clamp and a second suction cup, the first clamp and the second clamp are located on the same side of the glass, the first clamp and the second clamp are in contact with the side of the glass where the AG solution is not sprayed, and are in contact with the circumferential side of the glass, so that the glass is more stable during the handling process, the first suction cup and the second suction cup are both located on the other side of the glass, the first suction cup and the second suction cup realize the handling of the glass by adsorption force, and the first suction cup and the second suction cup have a handling state close to the glass, or a non-handling state away from the glass. In the handling state, the first suction cup and the second suction cup are spaced apart from the glass, that is, the first suction cup and the second suction cup are not in direct contact with the glass. When in the transport state, the first suction cup and the second suction cup can suck up the glass, and then the first clamp and the second clamp hold up the side of the glass that is not sprayed with the AG solution, so that the glass can be transported while ensuring that the AG coating on the surface of the glass is not damaged. When in the non-transportation state, the adsorption force of the first suction cup and the second suction cup disappears, the opening and closing degree of the first clamp and the second clamp increases, and then the glass is removed for the next step. The technical solution of the present application effectively solves the problem in the prior art that the AG coating is easily damaged when transporting the glass coated with the AG solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic structural diagram of a non-contact glass handling device according to an embodiment of the present application is shown;

[0019] Figure 2 The overall structure schematic diagram of the non-contact glass handling device according to an embodiment of the present application is shown;

[0020] Figure 3 Shows Figure 2 A local enlarged schematic diagram of point A;

[0021] Figure 4 Shows Figure 2 A partial enlarged schematic diagram of point B.

[0022] The above drawings include the following reference numerals:

[0023] 10. First adjustment component; 11. Fourth moving seat; 12. Fourth drive motor; 13. Fourth adjustment screw; 14. Fourth moving nut; 20. Second adjustment component; 21. First moving structure; 211. First clamp; 212. First suction cup; 213. First moving seat; 214. First adjustment screw; 215. First moving nut; 216. First drive motor; 217. First connecting piece; 218. First air nozzle; 22. Second moving structure; 221. Second clamp; 222. Second suction cup; 223. Second moving seat; 224. Second adjustment screw; 225. Second moving nut; 226. Second drive motor; 227. Second connecting piece; 228. Second air nozzle; 23. Third moving structure; 231. Third moving seat; 232. Third drive motor; 233. Third adjustment screw; 234. Third moving nut; 100. Glass. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0027] like Figure 1 and Figure 2As shown, some embodiments of the non-contact glass handling device include: a first adjustment component 10 and a second adjustment component 20. The second adjustment component 20 is movably mounted on the first adjustment component 10, and the second adjustment component 20 includes a first moving structure 21 and a second moving structure 22. The first moving structure 21 includes a first clamping jaw 211 and a first suction cup 212, and the second moving structure 22 includes a second clamping jaw 221 and a second suction cup 222. The first clamping jaw 211 and the second clamping jaw 221 are located on the same side of the glass 100, and the first suction cup 212 and the second suction cup 222 are located on the other side of the glass 100. The first suction cup 212 and the second suction cup 222 have a handling state close to the glass 100, or a non-handling state away from the glass 100. In the handling state, the first suction cup 212 and the second suction cup 222 are spaced from the glass 100.

[0028] The non-contact glass handling device using the technical solution of this embodiment includes: a first adjustment component 10 and a second adjustment component 20. The second adjustment component 20 is movably mounted on the first adjustment component 10, so that the second adjustment component 20 can be adaptively adjusted according to the size of the glass, so as to facilitate the handling of the glass. The second adjustment assembly 20 includes a first moving structure 21 and a second moving structure 22. The first moving structure 21 includes a first clamping jaw 211 and a first suction cup 212. The second moving structure 22 includes a second clamping jaw 221 and a second suction cup 222. The first clamping jaw 211 and the second clamping jaw 221 are located on the same side of the glass. The first clamping jaw 211 and the second clamping jaw 221 are in contact with the side of the glass 100 that is not sprayed with the AG solution, and are in contact with the circumferential side of the glass 100, so that the glass 100 is more stable during the transportation process. The first suction cup 212 and the second suction cup 222 are both located on the other side of the glass 100. The first suction cup 212 and the second suction cup 222 realize the transportation of the glass 100 through the adsorption force. The first suction cup 212 and the second suction cup 222 have a transportation state close to the glass 100, or a non-transportation state away from the glass 100. In the transportation state, the first suction cup 212 and the second suction cup 222 are spaced apart from the glass, that is, the first suction cup 212 and the second suction cup 222 are not in direct contact with the glass. When in the transport state, the first suction cup and the second suction cup can suck up the glass, and then the first clamp 211 and the second clamp 221 hold up the side of the glass that is not sprayed with the AG solution, so that the glass can be transported while ensuring that the AG coating on the surface of the glass is not damaged. When in the non-transport state, the adsorption force of the first suction cup 212 and the second suction cup 222 disappears, the opening and closing degree of the first clamp 211 and the second clamp 221 increases, and then the glass is removed for the next step. The technical solution of this embodiment effectively solves the problem in the prior art that the AG coating is easily damaged when transporting the glass coated with the AG solution.

[0029] It should be noted that the first suction cup 212 and the second suction cup 222 are connected to an external pressure regulating structure. The first suction cup 212 and the second suction cup 222 both have tiny holes inside. By adjusting the air pressure, the gas can flow into the suction cup through the tiny holes inside the suction cup. At this time, the gas flow rate will be accelerated and the pressure will be reduced. A low-pressure area is formed on the surface where the suction cup contacts the glass 100. The adsorption force formed by the pressure difference is greater than the sum of the gravity of the glass 100 itself and the downward force on the object when the air flows out. The object is sucked by the air instead of using viscosity to adsorb the glass 100 to the surface of the suction cup. Therefore, it is not easy to damage the AG coating on the surface of the glass 100 (a layer of optical scattering particles is sprayed on the glass surface by the equipment, and the AG coating has the effect of anti-reflection and anti-glare). The non-contact glass handling device also includes a control component, which is electrically connected to the first adjustment component 10 and the second adjustment component 20. The control component is also electrically connected to the pressure regulating structure. Relevant parameters for handling the glass 100 are input into the control component. The control component can control the pressure regulating structure to control the pressure, thereby realizing non-contact adsorption of the glass 100. At the same time, the movement of the second adjustment component 20 can be controlled to make the handling of glass 100 of different sizes more stable. The specific control method and pressure regulating method are not repeated here.

[0030] It should also be noted that the first moving structure 21 also includes a cylinder, which is connected to the clamping jaws, and the clamping action of the first clamping jaw 211 can be achieved by controlling the pressure of the compressed gas. The second adjustment assembly 20 also includes a quick-connect air nozzle, which connects the first suction cup 212, the second suction cup 222 and the pressure regulating structure, and can play a role in connecting or disconnecting the pressure regulating structure. The shortest distance between the first clamping jaw 211 and the first suction cup 212 is greater than the thickness of the glass 100.

[0031] like Figure 3 As shown, in some embodiments, the first movable structure 21 also includes a first movable seat 213, a first adjusting screw 214 and a first movable nut 215. The first movable seat 213 is connected to the third movable nut 234 and can move with the third movable nut 234. The first adjusting screw 214 is rotatably mounted on the first movable seat 213. The first adjusting screw 214 has a first left-handed section and a first right-handed section. The first movable nut 215 has multiple groups. The first movable nut 215 is respectively engaged with the first left-handed section and the first right-handed section. As the first adjusting screw 214 rotates, the first movable nut 215 can move along the first left-handed section and the first right-handed section, respectively.

[0032] like Figure 3As shown, in some embodiments, the first movable structure 21 also includes a first drive motor 216 and a first connecting member 217. The first drive motor 216 is installed on the first movable seat 213. The output shaft of the first drive motor 216 is connected to the first adjusting screw 214, driving the first adjusting screw 214 to rotate. The first movable nut 215 is engaged with the first adjusting screw 214 to achieve axial movement along the first adjusting screw 214. The first movable nut 215 is connected to the first connecting member 217, driving the first connecting member 217 to move synchronously. The first clamp 211 and the first suction cup 212 are installed on the first connecting member 217, and move with the first connecting member 217. This arrangement enables adaptation to glass 100 of different sizes.

[0033] It should be noted that the first connecting member 217 is a plurality of groups of the first clamping jaws 211 , the first suction cups 212 and the first movable nuts 215 , and this arrangement makes the glass 100 more stable when being transported.

[0034] like Figure 4 As shown, in some embodiments, the second moving structure 22 further includes a second moving seat 223, a second adjusting lead screw 224 and a second moving nut 225, the second moving seat 223 is connected to the fourth moving nut 14, and can move with the second moving seat 223, the second adjusting lead screw 224 is rotatably mounted on the second moving seat 223, the second adjusting lead screw 224 has a second left-handed section and a second right-handed section, the second moving nut 225 has multiple groups, and the second moving nut 225 is respectively engaged with the second left-handed section and the second right-handed section. As the second adjusting lead screw 224 rotates, the second moving nut 225 can move along the second left-handed section and the second right-handed section respectively.

[0035] like Figure 4 As shown, in some embodiments, the second movable structure 22 further includes a second drive motor 226 and a second connecting member 227, the output shaft of the second drive motor 226 is connected to the second adjustment screw 224, the second movable nut 225 is connected to the second connecting member 227, and the second clamping jaw 221 and the second suction cup 222 are mounted on the second connecting member 227. The connection structure and installation method of the second drive motor 226 and the second connecting member 227 are the same as those of the first drive motor 216 and the first connecting member 217, and are not repeated here.

[0036] like Figure 1 and Figure 3As shown, in some embodiments, the second adjustment assembly 20 further includes a third moving structure 23, which is movably mounted on the first adjustment assembly 10, and the first moving structure 21 is movably mounted on the third moving structure 23. The third moving structure 23 is connected to the fourth moving nut 14 and can move with the fourth moving nut 14. The first moving structure 21 realizes axial movement along the third adjustment screw 233 through the first moving seat 213 and the third moving nut 234.

[0037] like Figure 1 and Figure 3 As shown, in some embodiments, the third movable structure 23 includes a third movable seat 231, a third drive motor 232, a third adjustment screw 233 and a third movable nut 234. The third drive motor 232 is installed on the third movable seat 231, and the third adjustment screw 233 is rotatably installed on the third movable seat 231. The output shaft of the third drive motor 232 is connected to the third adjustment screw 233, which can drive the third adjustment screw 233 to rotate. The third movable nut 234 is engaged with the third adjustment screw 233 and can move along the axial direction of the third adjustment screw 233.

[0038] It should be noted that the third movable nut 234 is connected to the first movable seat 213, thereby driving the first movable structure 21 to move. This arrangement allows the first movable structure 21 and the second movable structure 22 to be located on different lines, thereby being able to transport special-shaped glass.

[0039] like Figure 1 As shown, in some embodiments, the first adjustment assembly 10 includes a fourth moving seat 11, a fourth drive motor 12, a fourth adjustment screw 13 and a fourth moving nut 14. The fourth drive motor 12 and the fourth adjustment screw 13 are both mounted on the fourth moving seat 11. The output shaft of the fourth drive motor 12 is connected to the fourth adjustment screw 13, and can drive the fourth adjustment screw 13 to rotate. The fourth adjustment screw 13 has a third left-handed section and a third right-handed section. The fourth moving nut 14 has multiple groups, and the fourth moving nut 14 is respectively engaged with the third left-handed section and the third right-handed section, and can realize axial movement along the fourth adjustment screw 13. The fourth moving seat 11 is connected to an external manipulator or a supporting device, and can realize the movement of the entire device.

[0040] like Figure 1 As shown, in some embodiments, the fourth movable nut 14 is respectively connected to the third movable structure 23 and the second movable structure 22, and the fourth movable nut 14 can drive the third movable structure 23 and the second movable structure 22 to move synchronously. Since the third movable structure 23 is connected to the first movable structure 21, the distance between the first movable structure 21 and the second movable structure 22 is adjustable, which can adapt to glass 100 of different sizes and is more flexible.

[0041] like Figure 3 and Figure 4 As shown, in some embodiments, the first movable structure 21 further includes a first air nozzle 218, and the second movable structure 22 further includes a second air nozzle 228. Both the first air nozzle 218 and the second air nozzle 228 face toward the direction close to the glass 100. The first air nozzle 218 is mounted on the first movable seat 213, and the second air nozzle 228 is mounted on the second movable seat 223. The first air nozzle 218 and the second air nozzle 228 can cooperate with the first suction cup 212 and the second suction cup 222 to spray gas with an opposite suction force to the first suction cup 212 and the second suction cup 222, so as to prevent the first suction cup 212 and the second suction cup 222 from contacting the surface of the glass 100.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A non-contact glass handling device, characterized in that: include: A first adjustment component (10); A second adjustment component (20), wherein the second adjustment component (20) is movably mounted on the first adjustment component (10), and the second adjustment component (20) comprises a first movable structure (21) and a second movable structure (22), wherein the first movable structure (21) comprises a first clamping jaw (211) and a first suction cup (212), and the second movable structure (22) comprises a second clamping jaw (221) and a second suction cup (222), wherein the first clamping jaw (211) and the second clamping jaw (221) are located on the same side of the glass (100), and the first suction cup (212) and the second suction cup (222) are located on the other side of the glass (100), and the first suction cup (212) and the second suction cup (222) have a transport state close to the glass (100) or a non-transport state far away from the glass (100), and in the transport state, the first suction cup (212) and the second suction cup (222) are spaced apart from the glass (100).

2. The non-contact glass handling device according to claim 1, characterized in that: The first movable structure (21) also includes a first movable seat (213), a first adjusting screw (214) and a first movable nut (215), wherein the first adjusting screw (214) is mounted on the first movable seat (213), the first adjusting screw (214) has a first left-handed section and a first right-handed section, and the first movable nut (215) has multiple groups, and the first movable nut (215) is respectively engaged with the first left-handed section and the first right-handed section.

3. The non-contact glass handling device according to claim 2, characterized in that: The first movable structure (21) also includes a first drive motor (216) and a first connecting member (217), wherein the output shaft of the first drive motor (216) is connected to the first adjustment screw (214), the first movable nut (215) is connected to the first connecting member (217), and the first clamping jaw (211) and the first suction cup (212) are mounted on the first connecting member (217).

4. The non-contact glass handling device according to claim 3, characterized in that: The second movable structure (22) also includes a second movable seat (223), a second adjusting screw (224) and a second movable nut (225), wherein the second adjusting screw (224) is mounted on the second movable seat (223), the second adjusting screw (224) has a second left-handed section and a second right-handed section, and the second movable nut (225) has multiple groups, and the second movable nut (225) is respectively engaged with the second left-handed section and the second right-handed section.

5. The non-contact glass handling device according to claim 4, characterized in that: The second movable structure (22) also includes a second drive motor (226) and a second connecting member (227), the output shaft of the second drive motor (226) is connected to the second adjustment screw (224), the second movable nut (225) is connected to the second connecting member (227), and the second clamping jaw (221) and the second suction cup (222) are installed on the second connecting member (227).

6. The non-contact glass handling device according to claim 5, characterized in that: The second adjustment assembly (20) further comprises a third movable structure (23), wherein the third movable structure (23) is movably mounted on the first adjustment assembly (10), and the first movable structure (21) is movably mounted on the third movable structure (23).

7. The non-contact glass handling device according to claim 6, characterized in that: The third movable structure (23) comprises a third movable seat (231), a third drive motor (232), a third adjustment screw (233) and a third movable nut (234); the third drive motor (232) is mounted on the third movable seat (231); the output shaft of the third drive motor (232) is connected to the third adjustment screw (233); and the third movable nut (234) is meshed with the third adjustment screw (233).

8. The non-contact glass handling device according to claim 7, characterized in that: The first adjustment component (10) comprises a fourth movable seat (11), a fourth drive motor (12), a fourth adjustment screw (13) and a fourth movable nut (14); the fourth drive motor (12) and the fourth adjustment screw (13) are both mounted on the fourth movable seat (11); the output shaft of the fourth drive motor (12) is connected to the fourth adjustment screw (13); the fourth adjustment screw (13) has a third left-handed section and a third right-handed section; the fourth movable nut (14) has a plurality of groups; the fourth movable nut (14) is respectively meshed with the third left-handed section and the third right-handed section.

9. The non-contact glass handling device according to claim 8, characterized in that: The fourth movable nut (14) is connected to the third movable structure (23) and the second movable structure (22) respectively.

10. The non-contact glass handling device according to claim 9, characterized in that: The first movable structure (21) also includes a first air nozzle (218), and the second movable structure (22) also includes a second air nozzle (228). The first air nozzle (218) and the second air nozzle (228) are both facing a direction close to the glass (100). The first air nozzle (218) is installed on the first movable seat (213), and the second air nozzle (228) is installed on the second movable seat (223).

Images