Glass bench dedicated to an autoclave

Abstract

The application provides a glass bench special for an autoclave, and relates to the technical field of glass processing equipment, which comprises a chassis and at least one spacer mechanism arranged on the chassis, wherein the spacer mechanism comprises a plurality of arc-shaped spacer rods, both ends of each arc-shaped spacer rod are fixed on the chassis, each arc-shaped spacer rod is parallel to each other, an insertion plate gap is formed between adjacent arc-shaped spacer rods, each arc-shaped spacer rod is provided with an air hole, a plurality of capsules are arranged on the arc-shaped spacer rods in an alternating manner, the capsules are communicated with the air hole, the application further comprises an inflation tube, each arc-shaped spacer rod is connected with the inflation tube, and the end of the inflation tube is provided with a one-way valve allowing the inflation tube to be inflated. The application has the advantages of simple structure, less splicing defects and the like.

Description

Technical Field

[0001] This invention relates to the field of glass processing equipment technology, and in particular to a glass stand specifically designed for high-pressure autoclaves. Background Technology

[0002] Autoclaving is a crucial step in laminated glass production, as it involves using high temperature and pressure to firmly bond the PVB film to the glass.

[0003] The process includes: isolating and neatly placing the pre-pressed laminated glass semi-finished products one by one on a special frame (autoclave car). The glass is usually stacked at an angle (adjacent glass is separated by gaskets, etc.) on the glass frame. After loading, it runs along the track into the autoclave. After starting the autoclave, the temperature and pressure are increased synchronously according to the set process curve: the internal temperature fluctuates between 80 and 150°C (entry temperature, not process temperature), and the air pressure fluctuates between 0.75 and 1.5 MPa (atmospheric pressure at entry, not process air pressure). This causes the PVB film to completely melt and form a molecular-level bond with the glass surface, achieving high-strength adhesion. The high temperature and high pressure environment can dissolve the residual air in the interlayer into the film, avoiding the generation of bubbles.

[0004] Currently, the tilted stacking method (with the glass panel at an angle of 2-8° to the vertical plane) has the following problems: The weight of the glass itself will cause the glass to bear pressure, and the pressure will be uneven. The gas pressure inside the autoclave is to provide the bonding pressure, but there is also mutual squeezing pressure between the glass panels when they are stacked. This creates an uncontrollable factor in the bonding pressure of the glass. Obviously, the pressure on the glass in different positions is not the same when the glass is stacked. In addition, there is point or line contact between the glass panels and the platform, and adjacent glass panels are also separated by gaskets. There is also local contact between the glass panels and the gaskets. Under high temperature and high pressure, this contact between the glass surface and other objects can easily lead to gravity concentration and stain residue, which poses a quality risk to the glass. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a glass platform for maintaining the self-standing state of glass plates inside a reactor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a glass platform for a high-pressure reactor, characterized in that it includes a base frame and at least one partition mechanism disposed on the base frame. The partition mechanism includes several arc-shaped partition rods, both ends of which are fixed to the base frame. The arc-shaped partition rods are parallel to each other, and a gap is formed between adjacent arc-shaped partition rods. Each arc-shaped partition rod has a vent hole, and several bladders are arranged alternately on the arc-shaped partition rods. The bladders communicate with the vent hole. The invention also includes an inflation pipe, and each arc-shaped partition rod is connected to the inflation pipe. The end of the inflation pipe is provided with a one-way valve that allows inflation into the inflation pipe.

[0007] This design uses pre-inflation to expand the balloon until it contacts the glass plate surface. The balloon's contact with the glass plate ensures stability in a vertical position, facilitating the movement and transport of the test bench. Since the glass plate remains vertical when installed on the test bench, its own weight will not cause it to tilt. The pressure of the balloon against the glass plate is only used to prevent tilting caused by vibration during test bench movement. Therefore, during the process of the test bench entering and exiting the autoclave, because the external air pressure of the balloon is normal atmospheric pressure, the balloon's pressure and positioning on the glass plate surface can be maintained by inflating the curved partition rod. After entering the autoclave, the pressure inside the autoclave increases during the lamination process. As the external pressure of the capsule increases, the pressure difference between the inside and outside of the capsule decreases, causing the capsule to contract. This reduces the pressure exerted by the capsule on the glass plate, and the capsule may even detach from the glass plate. Thus, in a static state, the glass plate remains vertical and independent, not in contact with the capsule or only slightly detached. This avoids the adverse effects of high-temperature pressure on the glass plate and other objects on the lamination process, as well as uneven compressive stress and stains caused by pressure. After the glass plates are laminated in the autoclave, the pressure and temperature inside the autoclave decrease, and the capsule gradually resumes its clamping and positioning of the glass plate, facilitating the maintenance of the glass plate's clamping position during removal from the autoclave.

[0008] Furthermore, at room temperature, the internal pressure of the capsule is controlled between 0.3 and 0.5 MPa. The inflation pressure is selected according to the thickness of the glass plate; when the glass plate is thicker, it has better self-stability, and the inflation pressure can be appropriately reduced.

[0009] Furthermore, there are two partition mechanisms, and the base frame has a vertical partition frame in the middle, with the two partition mechanisms respectively arranged on both sides of the vertical partition frame.

[0010] Furthermore, the spherical caps on adjacent arc-shaped separators are misaligned.

[0011] Furthermore, the base frame is equipped with rollers.

[0012] Compared with existing technologies, this solution has the following advantages: It can accommodate glass plates of different shapes and sizes.

[0013] It can maintain the clamping of the glass plate during the movement of the platform, and when the glass plate is assembled in the reactor, the gas pressure in the reactor forms an external force of contraction on the capsule, causing the glass plate to detach from or slightly release from the capsule while in the reactor, thus maintaining the independent state of the glass plate in the reactor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the glass platform of the autoclave.

[0015] Figure 2 This is a schematic diagram of the arc-shaped separator bar.

[0016] Figure 3 This is a schematic diagram of the spherical deformation on the arc-shaped separator.

[0017] Illustration: 1. Base frame; 2. Arc-shaped divider bar; 3. Balloon; 4. Inflation tube; 5. Vertical divider frame; 6. Rollers. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, the device includes a base frame 1 and at least one partition mechanism mounted on the base frame 1. The partition mechanism includes several arc-shaped partition rods 2, both ends of which are fixed to the base frame 1. The arc-shaped partition rods 2 are parallel to each other, and a gap is formed between adjacent arc-shaped partition rods 2. Each arc-shaped partition rod 2 has a vent hole. Several balloons 3 are arranged alternately on the arc-shaped partition rods 2, and the balloons 3 communicate with the vent hole. The device also includes an inflation tube 4, and each arc-shaped partition rod 2 is connected to the inflation tube 4. The end of the inflation tube 4 is provided with a one-way valve that allows air to be injected into the inflation tube 4. At room temperature, the air pressure inside the balloons 3 is controlled between 0.3 and 0.5 MPa. The inflation pressure is selected according to the thickness of the glass plate. When the glass plate is thicker, it has better self-stability and the inflation pressure can be appropriately reduced. There are two partition mechanisms. The middle of the base frame 1 has a vertical partition frame 5. The two partition mechanisms are respectively set on both sides of the vertical partition frame 5. The spherical balls 3 on the adjacent arc-shaped partition rods 2 are staggered. Rollers 6 are set on the base frame 1.

[0020] Taking the combination of two 8mm glass plates as an example, with the pressure of the capsule 3 depressurized or maintained at 0.3MPa, the glass is loaded onto the platform. A glass plate can be inserted between adjacent curved partition plates. Adjust the pressure of the capsule 3 and the position of the glass plate to ensure that the glass plate is vertical and that the capsule 3 exerts a large compressive force on the glass plate. Then, push the platform into the autoclave, connect the track, and close the autoclave door. Initial pressurization: When the pressure inside the autoclave rises to about 0.75MPa, stop pressurizing to prevent air backflow at the unbonded edges. Heating stage: Increase the temperature to 120–150℃ at a rate of tens of degrees per hour, while continuing pressurization. When the temperature reaches 80℃, the pressure should be increased to 1.25MPa to ensure that the film flows fully and dissolves residual air bubbles. Maintain the target temperature, such as 132℃, and the pressure at 1.0–1.5MPa for 30 minutes to 3 hours. The specific time depends on the total thickness of the glass and the complexity of the structure. During this stage, the PVB film completely melts and forms a molecular-level bond with the glass surface, achieving high-strength adhesion. The high-temperature and high-pressure environment dissolves residual air in the interlayer within the film, preventing bubble formation. After the heat preservation period, the cooling stage begins. The cooling rate must be strictly controlled, first slowly cooling to below 90°C to allow the film to gradually solidify from a liquid state. Pressure can only be released when the temperature drops to around 40°C to avoid sudden changes in internal and external pressure differences that could cause delamination or cracking. After pressure release, the film is removed from the stand, completing the lamination process.

[0021] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A glass platform specifically for high-pressure reactors, characterized in that, The device includes a base frame (1) and at least one partition mechanism mounted on the base frame (1). The partition mechanism includes several arc-shaped partition rods (2), both ends of which are fixed to the base frame (1). The arc-shaped partition rods (2) are parallel to each other, and a gap is formed between adjacent arc-shaped partition rods (2). Each arc-shaped partition rod (2) has a vent hole. Several balloons (3) are arranged alternately on the arc-shaped partition rods (2). The balloons (3) are connected to the vent hole. The device also includes an inflation tube (4). Each arc-shaped partition rod (2) is connected to the inflation tube (4). The end of the inflation tube (4) is provided with a one-way valve that allows inflation into the inflation tube (4).

2. The glass stand for a high-pressure reactor according to claim 1, characterized in that, At room temperature, the air pressure inside the capsule (3) is controlled between 0.3 and 0.5 MPa. The inflation pressure should be selected according to the thickness of the glass plate. When the glass plate is thicker, it has better self-stability, and the inflation pressure can be appropriately reduced.

3. A glass platform for a high-pressure reactor according to claim 1 or 2, characterized in that, There are two partition mechanisms. The base frame (1) has a vertical partition frame (5) in the middle. The two partition mechanisms are respectively set on both sides of the vertical partition frame (5).

4. A glass platform for a high-pressure reactor according to claim 1 or 2, characterized in that, The sac-like spheres (3) on adjacent arc-shaped separators (2) are misaligned.

5. A glass platform for a high-pressure reactor according to claim 1 or 2, characterized in that, The base frame (1) is equipped with rollers (6).

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