A production process for tempered laminated glass

Abstract

The present invention relates to the technical field of laminated glass production, and in particular to a production process for tempered laminated glass, the process comprising the following steps: step 1: placing a glass substrate on a workbench in a cleaning section for cleaning; step 2: placing the cleaned glass substrate into a laminating chamber for laminating, laying a PVB intermediate film on the glass substrate, covering the intermediate film with another glass substrate, and cutting off excess film; step 3: allowing the laminated glass to enter a rolling section, placing the laminated glass on a rolling platform, and performing exhaust and edge sealing treatments through a rolling mechanism; step 4: wrapping a vacuum bag on the laminated glass after rolling, using an edge sealing machine to seal the vacuum bag, and then evacuating the air; step 5: allowing the laminated glass treated in step 4 to enter an autoclave, and finally forming the laminated glass. The production process for tempered laminated glass of the present invention ensures the exhaust effect of the exhaust process and improves the quality of laminated glass manufacturing.

Description

Technical Field

[0001] The invention relates to the technical field of laminated glass production, in particular to a production process of tempered laminated glass. Background Art

[0002] Laminated glass is a composite glass product consisting of two or more pieces of glass with one or more layers of organic polymer interlayer sandwiched between them. After a special high-temperature pre-pressing and high-temperature and high-pressure process, the glass and the interlayer are permanently bonded together. The commonly used interlayer for laminated glass is PVB, a polymer material formed by plasticizing and extruding polyvinyl butyral resin with a plasticizer. It has a translucent appearance, is free of impurities, has a smooth surface, a certain degree of roughness and good softness, has excellent adhesion to inorganic glass, and is transparent, heat-resistant, cold-resistant, moisture-resistant, and has high mechanical strength. It is the best adhesive material for manufacturing laminated and safety glass in the world. Bonding is completed through high-pressure compounding and heating. PVB laminated glass is widely used in the construction, automotive and photovoltaic industries due to its multiple functions such as safety, heat preservation, noise control and UV isolation.

[0003] In recent years, as the demand for glass applications in buildings continues to expand and more and more people are aware of the safety characteristics of laminated glass, the market demand for laminated glass products has also increased significantly. Some require metal plates to be sandwiched between the glass, some require special impact-resistant materials, some require personalized decorative patterns, and some require curved glass interlayers, etc.

[0004] In the existing production process of tempered laminated glass, the exhaust process is particularly important during the production process, especially for glass substrates with curvature. If the air is not completely exhausted and the edge sealing is completed, bubbles will remain in the final product, resulting in defective products and increased production costs. Therefore, in view of the above situation, there is an urgent need to develop a production process for tempered laminated glass to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The object of the present invention is to provide a production process for tempered laminated glass to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A production process for tempered laminated glass, comprising the following steps:

[0008] Step 1: Place the glass substrate on the workbench of the cleaning section for cleaning;

[0009] Step 2: Place the cleaned glass substrates in the laminating chamber for lamination. Set the temperature and humidity of the laminating chamber and lay a PVB interlayer on the glass substrate. The length and width of the PVB interlayer are both larger than those of the glass substrate. Place another glass substrate on top of the interlayer and trim the excess film.

[0010] Step 3: The laminated glass enters the rolling section, is placed on the rolling platform, and is subjected to exhaust and edge sealing treatment by the rolling mechanism provided on the rolling platform;

[0011] Step 4: Wrap a vacuum bag on the laminated glass after rolling, seal the vacuum bag with an edge sealing machine, and then evacuate the bag;

[0012] Step 5: Place the laminated glass processed in step 4 into an autoclave. Through three processes of heating, constant temperature, and cooling in the autoclave, the temperature and pressure of the autoclave are utilized to bond the PVB interlayer to the glass substrate, thereby forming laminated glass.

[0013] As a further solution of the present invention: in step 2, the temperature of the laminating chamber is 18° C.-25° C., and the relative humidity is controlled between 30%-50%.

[0014] As a further solution of the present invention: in the step, the rolling mechanism includes:

[0015] a support frame connected to the rolling platform; and

[0016] A rolling assembly and a guide assembly, wherein the rolling assembly is connected to the rolling platform and the support frame respectively; the guide assembly is located on the support frame and is installed in conjunction with the rolling assembly.

[0017] As a further solution of the present invention: the rolling assembly includes:

[0018] A conveying platform, the conveying platform is located on the rolling platform;

[0019] a chassis connected to the support frame; and

[0020] Pressing rollers, there are two sets of pressing rollers, one set of pressing rollers is rotatably mounted on the support frame, and the other set of pressing rollers is rotatably mounted on the rolling platform, and both sets of pressing rollers are connected to the chassis.

[0021] As a further solution of the present invention: the guide assembly includes:

[0022] a telescopic cylinder, the telescopic cylinder being fixedly mounted on the support frame;

[0023] A movable notch, the movable notch is provided on the support frame, a rotating shaft is rotatably installed in the movable notch, a support rod is fixedly installed on the rotating shaft, the support rod passes through the movable notch, and an arc-shaped support rod is fixedly installed at the bottom end of the support rod;

[0024] A connecting rod, both ends of which are hinged to the support rod and the telescopic cylinder respectively; and

[0025] A guide roller is connected to the arc-shaped support rod.

[0026] As a further solution of the present invention: it also includes: a right-angled trapezoidal limiting plate and a triangular prism limiting plate, the right-angled trapezoidal limiting plate and the triangular prism limiting plate are both located in the movable groove, the right-angled trapezoidal limiting plate is arranged opposite to the triangular prism limiting plate, and the right-angled trapezoidal limiting plate and the triangular prism limiting plate are also detachably connected to the support rod.

[0027] As a further solution of the present invention: further comprising: a sleeve, the sleeve being connected to the arc-shaped support rod;

[0028] an adjusting rod, one end of which is sleeved in the sleeve and the other end of which is rotatably connected to the guide roller; and

[0029] A positioning screw passes through the sleeve and is threadedly connected to the sleeve, and the positioning screw is also detachably connected to the adjusting rod.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The glass cleaned by the cleaning section enters the lamination chamber for lamination. The temperature and humidity of the lamination chamber are very important. After the PVB film is laid between the two curved glass substrates, the excess film is cut out. During this process, attention should be paid to the overlap between the two glass substrates. After the lamination is completed, it enters the rolling section. After rolling, the edge sealing effect and the exhaust condition in the middle are used to judge whether the rolling effect is good. If the effect is not good, the speed, temperature and pressure of the roller press need to be adjusted. After the rolling is completed, the laminated glass after rolling is wrapped in a vacuum bag to exhaust the air in the bag to achieve a vacuum effect. It is then placed on the loading vehicle of the autoclave. In the autoclave, the bonding between the PVB interlayer and the glass substrate is completed to achieve a better lamination effect and finally form the effect of laminated glass. In the rolling exhaust process, the rolling mechanism can be set to roll and guide the curved glass substrate to avoid insufficient rolling due to the existence of curvature during the rolling process, which causes bubbles between the two layers of glass substrates, ensuring the exhaust effect of the exhaust process and improving the quality of laminated glass manufacturing. It is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Flowchart of the production process of tempered laminated glass in an embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the main structure of the rolling mechanism part in an embodiment of the present invention.

[0034] Figure 3 For the embodiment of the present invention Figure 2 Schematic diagram of the top view of part A.

[0035] Figure 4 It is a side structural schematic diagram of the guide roller part in an embodiment of the present invention.

[0036] In the figure: 1-roller platform, 2-chassis, 3-support frame, 4-conveyor platform, 5-pressure roller, 6-guide roller, 7-adjusting rod, 8-sleeve, 9-support rod, 10-rotating shaft, 11-connecting rod, 12-telescopic cylinder, 13-right-angle trapezoidal limiting plate, 14-movable notch, 15-triangular prism limiting plate, 16-arc-shaped support rod, 17-positioning screw. DETAILED DESCRIPTION

[0037] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] See also Figure 1-Figure 4 The embodiment of the present invention provides a production process for tempered laminated glass, which comprises the following steps:

[0040] Step 1: Place the glass substrate on the workbench of the cleaning section for cleaning;

[0041] Step 2: Place the cleaned glass substrates in the laminating chamber for lamination. Set the temperature and humidity of the laminating chamber and lay a PVB interlayer on the glass substrate. The length and width of the PVB interlayer are both larger than those of the glass substrate. Place another glass substrate on top of the interlayer and trim the excess film.

[0042] Step 3: The laminated glass enters the rolling section, is placed on the rolling platform 1, and is subjected to exhaust and edge sealing treatment by the rolling mechanism provided on the rolling platform 1;

[0043] Step 4: Wrap a vacuum bag on the laminated glass after rolling, seal the vacuum bag with an edge sealing machine, and then evacuate the bag;

[0044] Step 5: Place the laminated glass processed in step 4 into an autoclave. Through three processes of heating, constant temperature, and cooling in the autoclave, the temperature and pressure of the autoclave are utilized to bond the PVB interlayer to the glass substrate, thereby forming laminated glass.

[0045] In step 2, the temperature of the laminating chamber is 18° C.-25° C., and the relative humidity is controlled between 30%-50%.

[0046] The glass cleaned by the cleaning section enters the lamination chamber for lamination. The temperature and humidity of the lamination chamber are very important. After the PVB film is laid between the two curved glass substrates, the excess film is cut out. During this process, attention should be paid to the overlap between the two glass substrates. After the lamination is completed, it enters the rolling section. After rolling, the edge sealing effect and the exhaust condition in the middle are used to judge whether the rolling effect is good. If the effect is not good, the speed, temperature and pressure of the roller press need to be adjusted. After the rolling is completed, the laminated glass after rolling is wrapped in a vacuum bag to exhaust the air in the bag to achieve a vacuum effect. It is then placed on the loading vehicle of the autoclave. In the autoclave, the bonding between the PVB interlayer and the glass substrate is completed to achieve a better lamination effect and finally form the effect of laminated glass. In the rolling exhaust process, the rolling mechanism can be set to roll and guide the curved glass substrate to avoid insufficient rolling due to the existence of curvature during the rolling process, which causes bubbles between the two layers of glass substrates, ensuring the exhaust effect of the exhaust process and improving the quality of laminated glass manufacturing. It is worthy of promotion.

[0047] In one embodiment of the present invention, see Figure 2-Figure 4 In step 3, the rolling mechanism includes:

[0048] A support frame 3, the support frame 3 is connected to the rolling platform 1; and

[0049] A rolling assembly and a guide assembly, wherein the rolling assembly is connected to the rolling platform 1 and the support frame 3 respectively, and the guide assembly is located on the support frame 3 and is installed in conjunction with the rolling assembly.

[0050] The rolling assembly includes: a conveying platform 4, which is located on the rolling platform 1;

[0051] a chassis 2, the chassis 2 being connected to the support frame 3; and

[0052] Pressing rollers 5 , there are two sets of pressing rollers 5 , one set of pressing rollers 5 is rotatably mounted on the support frame 3 , and the other set of pressing rollers 5 is rotatably mounted on the rolling platform 1 , and both sets of pressing rollers 5 are connected to the chassis 2 .

[0053] The guide assembly includes: a telescopic cylinder 12, which is fixedly mounted on the support frame 3;

[0054] A movable notch 14 is provided on the support frame 3 , a rotating shaft 10 is rotatably mounted in the movable notch 14 , a support rod 9 is fixedly mounted on the rotating shaft 10 , the support rod 9 passes through the movable notch 14 , and an arc-shaped support rod 16 is fixedly mounted at the bottom end of the support rod 9 ;

[0055] A connecting rod 11, both ends of which are hinged to the support rod 9 and the telescopic cylinder 12 respectively; and

[0056] The guide roller 6 is connected to the arc-shaped support rod 16.

[0057] See also Figure 3 , also includes: a right-angled trapezoidal limiting plate 13 and a triangular prism limiting plate 15, the right-angled trapezoidal limiting plate 13 and the triangular prism limiting plate 15 are both located in the movable slot 14, the right-angled trapezoidal limiting plate 13 is arranged opposite to the triangular prism limiting plate 15, and the right-angled trapezoidal limiting plate 13 and the triangular prism limiting plate 15 are also detachably connected to the support rod 9.

[0058] See also Figure 2 and Figure 4 , further comprising: a sleeve 8, wherein the sleeve 8 is connected to the arc-shaped support rod 16;

[0059] an adjusting rod 7, one end of which is sleeved in the sleeve 8, and the other end of which is rotatably connected to the guide roller 6; and

[0060] A positioning screw 17 , which passes through the sleeve 8 and is threadedly connected to the sleeve 8 , and is also detachably connected to the adjusting rod 7 .

[0061] After the chassis 2 is started, it can drive the two sets of pressure rollers 5 to rotate, so that the laminated glass can be exhausted. When the laminated glass enters between the two sets of pressure rollers 5, the telescopic cylinder 12 is started to push the connecting rod 11, and drive the support rod 9 and the rotating shaft 10 to rotate in the movable notch 14. Under the limiting action of the right-angled trapezoidal limiting plate 13, the support rod 9 can be changed from an inclined state to a vertical state. At this time, the guide roller 6 just rotates into the lower part of the laminated glass. The distance between the guide roller 6 and the bottom end of the support rod 9 can be adjusted between the adjusting rod 7 and the sleeve 8, and finally positioned by the positioning screw 17, so that the guide roller 6 and the support rod 9 can be adjusted. The distance between them is equal to the diameter of the glass substrate with an arc, so that the laminated glass can be supported and guided, so that the laminated glass can be evenly entered between the two sets of pressure rollers 5 to ensure that all bubbles are discharged. When the exhaust is completed, the telescopic cylinder 12 is started again to pull the connecting rod 11 and reverse the support rod 9. The triangular prism-shaped limiting plate 15 limits it, so that the guide roller 6 can be separated from the bottom of the laminated glass, so that the laminated glass after the exhaust treatment can continue to be transported to the next process on the conveying platform 4. In addition, through the cooperation of the adjusting rod 7 and the sleeve 8, it can also be used for glass substrates with different curvatures, thereby improving the practicality and flexibility of the equipment.

[0062] In summary, the glass cleaned by the cleaning section enters the laminating room for lamination. The temperature and humidity of the laminating room are very important. After the PVB film is laid between the two curved glass substrates, the excess film is cut out. During this process, attention should be paid to the overlap between the two glass substrates. After lamination, it enters the rolling section. After rolling, the edge sealing effect and the exhaust condition in the middle are used to judge whether the rolling effect is good. If the effect is not good, the speed, temperature and pressure of the roller press need to be adjusted. After the rolling is completed, the laminated glass after rolling is wrapped in a vacuum bag for treatment. The air in the bag is exhausted to achieve a vacuum effect, and then it is placed on the loading vehicle of the autoclave. In the autoclave, the bonding between the PVB interlayer and the glass substrate is completed to achieve a better lamination effect and finally form the effect of laminated glass. In the rolling and exhaust process, the roller mechanism is set to roll and guide the curved glass substrate to avoid insufficient rolling due to the curvature during the rolling process, which will cause bubbles between the two layers of glass substrates, thereby ensuring the exhaust effect of the exhaust process and improving the quality of laminated glass manufacturing.

[0063] It should be noted that, in the present invention, unless otherwise expressly specified or limited, the terms "sliding," "rotating," "fixed," and "provided with," etc., should be understood in a broad sense. For example, they may refer to welded connections, bolted connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise expressly specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A production process for tempered laminated glass, characterized in that: The process includes the following steps: Step 1: Place the glass substrate on the workbench of the cleaning section for cleaning; Step 2: Place the cleaned glass substrates in the laminating chamber for lamination. Set the temperature and humidity of the laminating chamber and lay a PVB interlayer on the glass substrate. The length and width of the PVB interlayer are both larger than those of the glass substrate. Place another glass substrate on the interlayer and trim the excess film. Step 3: The laminated glass enters the rolling section, is placed on the rolling platform, and is subjected to exhaust and edge sealing treatment by the rolling mechanism provided on the rolling platform; Step 4: Wrap a vacuum bag on the laminated glass after rolling, seal the vacuum bag with an edge sealing machine, and then evacuate the bag; Step 5: The laminated glass processed in step 4 is placed in an autoclave. The temperature and pressure of the autoclave are used to bond the PVB interlayer to the glass substrate through three processes: heating, constant temperature, and cooling. Finally, the laminated glass is formed. In step 3, the rolling mechanism includes: a support frame connected to the rolling platform; and A rolling assembly and a guide assembly, wherein the rolling assembly is connected to the rolling platform and the support frame respectively, and the guide assembly is located on the support frame and is installed in conjunction with the rolling assembly; The rolling assembly includes: a conveying platform, the conveying platform is located on the rolling platform; a chassis connected to the support frame; and Pressing rollers, the number of which is two sets, one set of which is rotatably mounted on the support frame, and the other set of which is rotatably mounted on the rolling platform, and both sets of which are connected to the chassis; The guide assembly includes: a telescopic cylinder, which is fixedly mounted on the support frame; A movable notch, the movable notch is provided on the support frame, a rotating shaft is rotatably installed in the movable notch, a support rod is fixedly installed on the rotating shaft, the support rod passes through the movable notch, and an arc-shaped support rod is fixedly installed at the bottom end of the support rod; A connecting rod, both ends of which are hinged to the support rod and the telescopic cylinder respectively; and A guide roller connected to the arc-shaped support rod; Also included: a right-angled trapezoidal limiting plate and a triangular prism limiting plate, wherein the right-angled trapezoidal limiting plate and the triangular prism limiting plate are both located in the movable notch, the right-angled trapezoidal limiting plate is arranged opposite to the triangular prism limiting plate, and the right-angled trapezoidal limiting plate and the triangular prism limiting plate are also detachably connected to the support rod; It also includes: a sleeve, the sleeve is connected to the arc-shaped support rod; an adjusting rod, one end of which is sleeved in the sleeve and the other end of which is rotatably connected to the guide roller; and A positioning screw passes through the sleeve and is threadedly connected to the sleeve, and the positioning screw is also detachably connected to the adjusting rod.

2. The production process of tempered laminated glass according to claim 1, characterized in that: In step 2, the temperature of the laminating chamber is 18° C.-25° C., and the relative humidity is controlled between 30%-50%.

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