Powder spraying device and laminated glass production line

Abstract

The utility model belongs to the technical field of glass production, and particularly relates to a powder spraying device and a laminated glass production line, the powder spraying device is used for spraying powder to glass, and the powder spraying device comprises a conveying structure used for conveying the glass and a plurality of powder spraying boxes arranged on the conveying structure; the powder spraying boxes are arranged at intervals in the conveying direction of the glass, each powder spraying box is provided with a cavity, the bottom of each powder spraying box is provided with an opening communicated with the corresponding powder spraying box, the openings face the conveying face of the conveying structure, and the inner wall of each powder spraying box is provided with nozzles used for spraying isolation powder to the conveying face; a collecting groove is further formed in the inner wall of the powder spraying box and used for collecting liquid drops flowing down along the inner wall of the powder spraying box. According to the utility model, the problems of how to enable the thickness of the isolation powder on the surface of the glass to meet the processing requirement, how to reduce the investment of manual labor and how to reduce the reject ratio of the glass can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass production, in particular to a powder spraying device and a laminated glass production line. Background Art

[0002] Laminated glass is a high-performance safety glass widely used in automotive and architectural applications. It's manufactured by placing one or more layers of film between two or more sheets of glass. Using a special process, the layers are subjected to high temperatures and high pressures for a period of time to form a composite. Through various combinations, these layers can be made into safety glass with multiple properties, including sound insulation, UV protection, excellent transparency, weather resistance, explosion resistance, and theft prevention. During the manufacturing process of laminated glass, especially heat-bent laminated glass, a powder spraying process is required before the glass is bent. A layer of isolation powder is sprayed on the upper surface of the lower glass layer. This isolates the two layers of glass during bending, preventing them from bonding during the heating and softening process.

[0003] However, the thickness of the isolation powder when sprayed by existing powder spraying equipment often fails to meet the production technical requirements, and the thickness of the isolation powder can only be increased by manual powdering, which increases the workload of the operators. In addition, since the powder spraying equipment sprays wet powder, water mist falls on the inner wall of the powder spraying box during powder spraying to form water droplets, and the water droplets fall on the glass to form water marks, thereby increasing the defective rate of the glass. Utility Model Content

[0004] The purpose of the embodiment of the present application is to provide a powder spraying device, aiming to solve the problems of how to make the thickness of the isolation powder on the glass surface meet the processing requirements, how to reduce the input of human labor and how to reduce the glass defect rate.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In a first aspect, a powder spraying device is provided for spraying powder on glass, wherein the powder spraying device includes a conveying structure for conveying glass and a plurality of powder spraying boxes arranged on the conveying structure, wherein the plurality of powder spraying boxes are arranged at intervals along the conveying direction of the glass, the powder spraying box has a cavity and the bottom of the powder spraying box is provided with an opening connected to the powder spraying box, the opening faces the conveying surface of the conveying structure, the inner wall of the powder spraying box is provided with a nozzle for spraying isolation powder onto the conveying surface, and the inner wall of the powder spraying box is also provided with a collecting trough, and the collecting trough is used to collect droplets flowing down along the inner wall of the powder spraying box.

[0007] In some embodiments, the nozzle is connected to a water pipe for conveying isolation powder liquid and an air pipe for conveying pressurized gas, and the water pipe and the air pipe are both arranged outside the powder spray box.

[0008] In some embodiments, the powder spraying device further includes a container for storing isolation powder liquid and a delivery pipeline connected to the container, and the water pipes connected to each of the powder spraying boxes are connected to the delivery pipeline through a control valve.

[0009] In some embodiments, the opening of the collecting trough is arranged upward, and the collecting trough is arranged transversely around the inner wall of the powder spray box.

[0010] In some embodiments, the nozzle is arranged on the top wall of the powder spray box, and the cross-sectional area of ​​the cavity is gradually expanded along the direction in which the nozzle points to the conveying surface.

[0011] In some embodiments, a powder collecting box is provided below the powder spraying box, the powder collecting box has a receiving cavity and the receiving cavity is communicated with the cavity, and the peripheral wall of the powder collecting box is connected to the peripheral wall of the powder spraying box.

[0012] In some embodiments, the powder collecting box contains a sedimentation liquid for absorbing the isolation powder.

[0013] In some embodiments, the conveying structure includes a conveying frame and a plurality of conveying rollers rotatably connected to the conveying frame. The plurality of conveying rollers are arranged at intervals along the conveying direction of the glass. The roller surfaces of the conveying rollers are in contact with the glass. The conveying rollers and the powder spray box are arranged at intervals along the vertical direction, and the powder spray box is arranged on the conveying frame.

[0014] In some embodiments, the side wall of the powder spray box is made of a transparent material.

[0015] In a second aspect, a laminated glass production line is provided, which includes the above-mentioned powder spraying device.

[0016] The powder spraying device provided in the present application is equipped with multiple powder spraying boxes, which can spray powder on the glass in sequence during the glass transmission process, so that the thickness of the isolation powder on the glass surface meets the processing requirements and can reduce the input of human labor; in addition, by providing a collection tank, when the wet powder sprayed from the nozzle adheres to the inner wall of the powder spraying box and condenses into droplets and slides downward, the collection tank can collect the droplets to prevent the droplets from falling on the glass surface, thereby reducing the defective rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1Schematic diagram of the overall structure of the powder spraying device provided in an embodiment of the present application;

[0019] Figure 2 This is a schematic structural diagram of a powder spray box provided in an embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the powder spray box provided in an embodiment of the present application.

[0021] Among them, the reference numerals in the figures are:

[0022] 10. Conveying structure;

[0023] 11. Conveyor rack;

[0024] 12. Conveyor roller;

[0025] 20. Powder spray box;

[0026] 21. Nozzle;

[0027] 22. Door panels;

[0028] 23. Open your mouth;

[0029] 24. Cavity;

[0030] 30. Collection tank;

[0031] 41. Water pipes;

[0032] 42. Transportation pipeline;

[0033] 43. Control valve;

[0034] 50. Powder collection box;

[0035] 60. Precipitation liquid;

[0036] 70. Container. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] See also Figures 1 to 3, an embodiment of the present application provides a powder spraying device for spraying powder on glass, the powder spraying device includes a conveying structure 10 for conveying glass and a plurality of powder spraying boxes 20 arranged on the conveying structure 10, the plurality of powder spraying boxes 20 are arranged at intervals along the conveying direction of the glass, the powder spraying box 20 has a cavity 24 and the bottom of the powder spraying box 20 is provided with an opening 23 connected to the powder spraying box 20, the opening 23 faces the conveying surface of the conveying structure 10, the inner wall of the powder spraying box 20 is provided with a nozzle 21 for spraying isolation powder onto the conveying surface, and the inner wall of the powder spraying box 20 is also provided with a collecting trough 30, the collecting trough 30 is used to collect droplets flowing down along the inner wall of the box.

[0042] It can be understood that the conveying structure 10 is arranged at the bottom of the powder spraying box 20, and the opening 23 of the powder spraying box 20 is spaced apart from the conveying surface of the conveying structure 10 in the vertical direction. When the glass is conveyed to the bottom of the powder spraying box 20, the powder spraying box 20 is equivalent to covering the glass, so that the glass can be powdered.

[0043] It is understood that the isolation powder sprayed by the nozzle 21 is a wet powder, which is formed by mixing the isolation powder filtered by a mesh and clean water in a certain proportion. Specifically, the isolation powder filtered by the mesh and clean water are placed in a mixing bucket, fully stirred by a blender, and then the stirred liquid is pumped to the nozzle 21. Optionally, the isolation powder in the embodiment of the present application is silicon powder.

[0044] The powder spraying device provided in the present application is equipped with multiple powder spraying boxes 20. The multiple powder spraying boxes 20 can spray powder on the glass in sequence during the glass transmission process, so that the thickness of the isolation powder on the glass surface meets the processing requirements and can reduce the input of human labor; in addition, by providing a collection tank 30, when the wet powder sprayed from the nozzle 21 adheres to the inner wall of the powder spraying box 20 and condenses into droplets and slides downward, the collection tank 30 can collect the droplets to prevent the droplets from falling on the glass surface, thereby reducing the defective rate of finished products.

[0045] In addition, by adding a powder spraying box 20, the original manual powdering is replaced, which can reduce pollution to the environment, avoid the impact on human health caused by inhalation, and avoid optical defects caused by uneven powdering. At the same time, it also solves the problem that silicone powder is not easy to handle cleanly during the production process, resulting in laminated impurities and waste products.

[0046] In some embodiments, the nozzle 21 is connected to a water pipe 41 for conveying isolation powder liquid and an air pipe for conveying pressurized gas. The pressurized gas can atomize the isolation powder liquid to form a mist-like isolation powder liquid, so that the isolation powder layer formed on the glass surface is more uniform.

[0047] Furthermore, the water pipe 41 and the air pipe are both arranged outside the powder spraying box 20, which can avoid the situation where the water pipe 41 and the air pipe are arranged inside the powder spraying box 20 and the powder drips onto the glass during spraying, which may easily cause optical distortion and waste products.

[0048] In some embodiments, the powder spraying device also includes a container 70 for storing isolation powder liquid and a delivery pipe 42 connected to the container 70. The water pipe 41 connected to each powder spraying box 20 is connected to the delivery pipe 42 through a control valve 43. The isolation powder liquid can be diverted to each nozzle 21 through the control valve 43, and the amount of isolation powder sprayed by each nozzle 21 can be controlled to be the same through the control valve 43, so that the thickness of the isolation powder is more controllable.

[0049] It can be understood that the powder spraying device further includes a water pump, which can drive the stirring liquid and the isolation powder liquid to be transported in the delivery pipe 42 and the water pipe 41.

[0050] In some embodiments, the powder spraying device further includes an airflow control electronic valve. The air pipes connected to each powder spray box 20 can be connected to the air source through the airflow control electronic valve, and the gas can be diverted to each nozzle 21 through the airflow control electronic valve.

[0051] In addition, the powder spraying equipment program can also be increased to control each powder spraying box 20 and adjust the powder spraying start and stop time.

[0052] It can be understood that since multiple powder spraying boxes 20 are set in the embodiment of the present application, the amount of isolation powder sprayed by each powder spraying box 20 each time will not be too much. Therefore, after each powder spraying is completed, the isolation powder on the glass can be air-dried during the process of conveying the glass to the next powder spraying box 20. Therefore, the embodiment of the present application does not need to set up a drying structure for drying, which can simplify the structure of the powder spraying device.

[0053] Optionally, in the embodiment of the present application, there are two powder spray boxes 20. Of course, in other possible implementations, the number of powder spray boxes 20 can also be three, four, five or more, which can be set according to actual needs. The present application does not limit the number of powder spray boxes 20.

[0054] In some embodiments, the opening 23 of the collecting trough 30 is set upward, and the collecting trough 30 is arranged horizontally around the inner wall of the powder spray box 20, so that the collecting trough 30 can block the droplets from falling on each inner wall of the powder spray box 20, further preventing the droplets from falling on the glass surface.

[0055] Optionally, the collection trough 30 is specifically a U-shaped trough with the opening 23 facing upward, with one sidewall of the U-shaped trough mounted on the inner wall of the powder spray box 20 so that the droplets are collected inside the U-shaped trough. In other embodiments, the inner wall of the powder spray box 20 can serve as one sidewall of the U-shaped trough, so that the collection trough 30 is a "J"-shaped structure protruding from the inner wall of the powder spray box 20.

[0056] In some embodiments, the nozzle 21 is disposed on the top wall of the powder spray box 20, and the cavity 24 is arranged to gradually expand in the direction of the nozzle 21 toward the conveying surface. Specifically, the width of the top of the powder spray box 20 is smaller than the width of the bottom of the powder spray box 20, that is, the powder spray box 20 is trapezoidal. This can increase the internal space of the powder spray box 20, making it easier to disperse the mist-like isolation powder during powder spraying. This shape of the powder spray box 20 can also ensure more uniform powder spraying.

[0057] Of course, in other possible implementations, the powder spray box 20 may also have other shapes and can be configured according to actual needs. This application does not impose a sole limitation on the shape of the powder spray box 20 .

[0058] In addition, the cross-sectional area of ​​the cavity 24 of the powder spray box 20 is gradually expanded in the direction of the nozzle 21 pointing to the conveying surface, so the inner wall of the powder spray box 20 is inclined, and the wet powder is not easily attached to the side wall, which can reduce the adhesion of the wet powder to the inner wall of the powder spray box 20.

[0059] In some embodiments, a powder collecting box 50 is provided below the powder spray box 20. The powder collecting box 50 has a receiving cavity and the receiving cavity is connected to the cavity 24. The peripheral wall of the powder collecting box 50 corresponds to the peripheral wall of the powder spray box 20, and the receiving cavity of the powder collecting box 50 is opposite to the opening 23 of the powder spray box 20.

[0060] The function of the powder collecting box 50 is to collect the isolation powder that is not attached to the glass surface, and the isolation powder can be recycled and reused, thereby improving resource utilization and avoiding waste.

[0061] Furthermore, the powder collecting box 50 contains a sedimentation liquid 60 for absorbing the isolation powder to prevent the isolation powder deposited in the powder collecting box 50 from being blown up by the nozzle 21 to form a powder ball. The bottom of the powder collecting box 50 is closed, and the sedimentation liquid 60 is placed in the powder collecting box 50. The depth of the sedimentation liquid 60 can be selected as needed. The powder collecting box 50 can be filled or not. It is preferred to fill the powder collecting box 50 so that more isolation powder can be absorbed.

[0062] Since the bottom of the powder collecting box 50 is closed and filled with sedimentation liquid 60, part of the isolation powder sprayed by the nozzle 21 falls on the glass, and the other part falls into the sedimentation liquid 60 in the powder collecting box 50. The isolation powder is absorbed by the sedimentation liquid 60 and then settles at the bottom of the powder collecting box 50. Since there is no dry isolation powder layer deposited, there is no possibility that the isolation powder is blown up by the nozzle 21 to form a powder ball and fall on the glass, thereby avoiding the generation of gluing impurities.

[0063] It is understandable that a valve may be provided at the bottom of the powder collecting box 50. After the powder spraying box 20 has been used for a period of time, the valve may be opened to discharge the sedimentation liquid 60 and add new sedimentation liquid 60. Optionally, the sedimentation liquid 60 is water.

[0064] In some embodiments, the conveying structure 10 includes a conveying frame 11 and a plurality of conveying rollers 12 rotatably connected to the conveying frame 11. The plurality of conveying rollers 12 are arranged at intervals along the conveying direction of the glass. The roller surfaces of the conveying rollers 12 are in contact with the glass. The conveying rollers 12 and the powder spray box 20 are arranged at intervals along the vertical direction, and the powder spray box 20 is arranged on the conveying frame 11.

[0065] The rotating conveying roller 12 contacts the glass, and the rotation of the conveying roller 12 can drive the glass to move forward. It can be understood that the height of the conveying roller 12 is lower than the top surface height of the conveying frame 11, so the height of the conveying surface can be ensured to be lower than the height of the opening 23 of the powder spraying box 20.

[0066] In some embodiments, the side wall of the powder spray box 20 is made of a transparent material, so that the internal conditions of the powder spray box 20 and the uniformity of the isolation powder spraying can be observed in real time through the side wall of the powder spray box 20. When a problem is found, the nozzle 21 is closed and the powder spray box 20 is opened to replace and maintain the internal components of the powder spray box 20.

[0067] In other possible embodiments, a door panel 22 may be installed on the side wall of the powder spray box 20 , and the door panel 22 may be opened or closed, which also facilitates the operator to maintain and replace components in the powder spray box 20 .

[0068] The present application also proposes a laminated glass production line, which includes a powder spraying device. The specific structure of the powder spraying device refers to the above embodiment. Since the laminated glass production line adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0069] To sum up, the powder spraying device provided in the present application, by setting up multiple powder spraying boxes 20, multiple powder spraying boxes 20 can spray powder on the glass in sequence during the glass transmission process, so that the thickness of the isolation powder on the glass surface meets the processing requirements and can reduce the input of human labor; in addition, by setting up a collection tank 30, when the wet powder sprayed by the nozzle 21 adheres to the inner wall of the powder spraying box 20 and condenses into droplets and slides downward, the collection tank 30 can collect the droplets to prevent the droplets from falling on the glass surface, thereby reducing the defective rate of finished products.

[0070] The above are merely optional 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 modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A powder spraying device for spraying powder on glass, characterized in that: The powder spraying device comprises a conveying structure (10) for conveying glass and a plurality of powder spraying boxes (20) arranged on the conveying structure (10), wherein the plurality of powder spraying boxes (20) are arranged at intervals along the conveying direction of the glass, the powder spraying box (20) has a cavity (24), and the bottom of the powder spraying box (20) is provided with an opening (23) connected to the powder spraying box (20), and the opening (23) faces the conveying surface of the conveying structure (10), the inner wall of the powder spraying box (20) is provided with a nozzle (21) for spraying isolation powder onto the conveying surface, and the inner wall of the powder spraying box (20) is also provided with a collecting trough (30), and the collecting trough (30) is used to collect droplets flowing down along the inner wall of the powder spraying box (20).

2. The powder spraying device according to claim 1, characterized in that: The nozzle (21) is connected to a water pipe (41) for conveying isolation powder liquid and an air pipe for conveying pressurized gas, and the water pipe (41) and the air pipe are both arranged outside the powder spraying box (20).

3. The powder spraying device according to claim 2, characterized in that: The powder spraying device further comprises a container (70) for storing the isolation powder liquid and a delivery pipe (42) connected to the container (70), and the water pipe (41) connected to each of the powder spraying boxes (20) is connected to the delivery pipe (42) through a control valve (43).

4. The powder spraying device according to claim 1, wherein: The opening (23) of the collecting trough (30) is arranged upward, and the collecting trough (30) is arranged transversely around the inner wall of the powder spraying box (20).

5. The powder spraying device according to claim 1, characterized in that: The nozzle (21) is arranged on the top wall of the powder spray box (20), and the cross-sectional area of ​​the cavity (24) is gradually expanded along the direction in which the nozzle (21) points to the conveying surface.

6. The powder spraying device according to any one of claims 1 to 5, characterized in that: A powder collecting box (50) is provided below the powder spraying box (20), the powder collecting box (50) having a receiving cavity which is communicated with the cavity (24), and a peripheral wall of the powder collecting box (50) corresponds to a peripheral wall of the powder spraying box (20).

7. The powder spraying device according to claim 6, characterized in that: The powder collecting box (50) contains a sedimentation liquid (60) for absorbing the isolation powder.

8. The powder spraying device according to any one of claims 1 to 5, characterized in that: The conveying structure (10) includes a conveying frame (11) and a plurality of conveying rollers (12) rotatably connected to the conveying frame (11), wherein the plurality of conveying rollers (12) are arranged at intervals along the conveying direction of the glass, and the roller surfaces of the conveying rollers (12) are in contact with the glass. The conveying rollers (12) and the powder spraying box (20) are arranged at intervals along the vertical direction, and the powder spraying box (20) is arranged on the conveying frame (11).

9. The powder spraying device according to any one of claims 1 to 5, characterized in that: The side wall of the powder spray box (20) is made of transparent material.

10. A laminated glass production line, characterized in that: The invention comprises the powder spraying device according to any one of claims 1 to 9.

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