Vertical roller conveying and drying heating furnace

Abstract

The utility model discloses a vertical roller conveying, drying and heating furnace which comprises a feeding device, a first heating chamber, a second heating chamber, a third heating chamber, a first cooling chamber, a second cooling chamber, a discharging device and a movable fence gate device which are sequentially connected, wherein the feeding device, the first heating chamber, the second heating chamber, the third heating chamber, the first cooling chamber, the second cooling chamber, the discharging device and the movable fence gate device are sequentially connected; the glass substrate is conveyed between each device and the chamber through a roller device; the multi-section temperature zone design is adopted, a whole row of materials are vertically placed, hot air or cold air is filtered and stirred to heat or dissipate heat of the glass substrate, the heating intensity or the heat dissipation intensity of each zone is independently controllable, and the curing requirements of different coating materials can be met.

Description

Technical Field

[0001] This utility model relates to the technical field of heating furnaces, and in particular to a vertical roller conveyor drying heating furnace. Background Technology

[0002] In the manufacturing process of liquid crystal displays (LCDs), to achieve specific optical and functional requirements, glass substrates typically require double-sided screen printing (IR screen printing) to form coatings or patterns with specific properties on the surface. The screen-printed coatings then undergo further processing via a drying process. This drying process ensures strong adhesion of the layers, improving their durability and stability in subsequent processes. Insufficiently dried coatings are susceptible to contamination from dust particles or subsequent operations, leading to product defects and reduced yield. After double-sided screen printing, the coating thickness and material distribution on the glass substrate may vary. Uneven heating can result in incomplete curing or cracking of the coating. Furthermore, interactions may exist between the coatings after double-sided IR screen printing on the glass substrate, making it difficult for existing equipment to perform simultaneous and precise drying on both sides. Utility Model Content

[0003] The purpose of this invention is to provide a vertical roller conveyor drying and heating furnace to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A vertical roller conveyor drying and heating furnace includes a feeding device (1), a first heating chamber (2), a second heating chamber (3), a third heating chamber (4), a first cooling chamber (5), a second cooling chamber (6), a discharging device (7), and a movable gate device (8) connected in sequence; the glass substrate is transferred between the devices and chambers via the roller device.

[0006] To further elaborate, the feeding device (1) and the discharging device (7) have similar structures. Taking the feeding device (1) as an example, the feeding device includes a feeding device frame (11), a feeding roller conveyor (12), a furnace door device (13), and a feeding device door (14). The glass substrate is placed in a vertical array along the conveying direction in the feeding roller conveyor (12). The feeding device door (14) is at the front end of the feeding roller conveyor (12), and the furnace door device (13) is at the rear end of the feeding roller conveyor (12). In the discharging device, the furnace door device is located at the front end of the discharging roller conveyor, and the discharging device door is at the rear end of the discharging roller conveyor.

[0007] To further elaborate, the feeding roller conveying device (12) is divided into two parts, including a lower roller group (121), an upper roller group (122), a lifting bracket (123), and a lifting drive assembly (124). The lower roller group (121) is installed on the platform of the feeding equipment frame (11). The lifting drive assembly (124) is installed on the rear column of the feeding equipment frame (11). The lifting bracket (123) is installed on the slide rail of the lifting drive assembly (124) and can slide up and down. The upper roller group (122) is installed on the lifting bracket (123). The rollers of the lower roller group (121) and the upper roller group (122) are provided with V-shaped grooves, and the grooves are aligned in the vertical direction. When conveying the glass substrate, the edge of the glass substrate is stuck in the groove of the upper and lower aligned rollers.

[0008] Further explanation: the furnace door device (13) includes a lifting guide rail assembly (131), a return spring assembly (132), a clamping cylinder (133), and a feeding furnace door (134). The lifting guide rail assembly (131) is installed on the right column of the feeding equipment frame (11). The return spring assembly (132) is connected to the slide rail slider and the rodless cylinder slider of the lifting guide rail assembly (131) and can extend and retract. The feeding furnace door (134) is installed on... On the reset spring assembly (132), the clamping cylinder (133) is installed on the right column of the equipment frame (11). When the clamping cylinder (133) extends, the spring of the reset spring assembly (132) is clamped, and the feed furnace door (134) is tightly fitted with the outer wall of the first heating chamber (2). When the clamping cylinder (133) retracts, the spring of the reset spring assembly (132) is reset, and the feed furnace door (134) is separated from the outer wall of the first heating chamber (2).

[0009] To elaborate further, the first heating chamber (2), the second heating chamber (3), and the third heating chamber (4) have the same structure. A return air filter (21) is provided above the first heating chamber (2) to maintain the circulation of hot air inside the chamber. The heating zone conveyor roller (22) is located below the return air filter (21). A heating resistance wire (23) is installed below the heating zone conveyor roller (22). A suction pump (24) is installed below the heating resistance wire (23). The suction pump (24) and the return air filter (21) are connected by a pipe to form a return air circulation pipeline. A wind deflector plate (25) is provided between the return air filter (21), the heating zone conveyor roller (22), and the heating resistance wire (23). The wind deflector plate is designed with an array of porous structures to allow the heat to be evenly distributed.

[0010] To elaborate further, the first cooling chamber (5) and the second cooling chamber (6) have the same structure. A fan filter (51) and an exhaust fan assembly (53) are provided above the first cooling chamber (5). The fan filter (51) is used to maintain the air circulation in the first cooling chamber (5) so that the glass substrate can dissipate heat evenly during the cooling process. The fan filter (51) is located directly above the cooling chamber roller device (52). The exhaust fan assembly (53) is used to slowly extract the hot air in the first cooling chamber (5). The exhaust fan assembly (53) is located behind the fan filter (51).

[0011] Further explanation: A movable gate device (8) is provided between the third heating chamber (4), the first cooling chamber (5), and the second cooling chamber (6) to prevent hot air of different temperatures from flowing between the different chambers. The movable gate device (8) includes a fixed grid plate (81), a Teflon grid plate (82), a movable grid plate (83), a hinge seat (84), and a high-temperature resistant cylinder assembly (85). The fixed grid plate (81), the Teflon grid plate (82), and the movable grid plate (83) are all provided with elongated grid holes that match the size of the glass substrate. The fixed grid plate (81) is mounted on the frame of the second cooling chamber (6), and the Teflon grid plate (82) is mounted on the fixed grid plate (83). 1) The movable grid plate (83) is connected to the frame of the first cooling chamber (5) through the hinge seats (84) installed at its four corners. The cylinder body of the high-temperature resistant cylinder assembly (85) is connected to the first cooling chamber (5). The push rod of the high-temperature resistant cylinder assembly (85) is connected to the movable grid plate (83). When the high-temperature resistant cylinder assembly (85) extends and retracts, it drives the movable grid plate (83) to rotate around the fixed end of the hinge seat (84). When the movable grid plate (83) presses against the Teflon grid plate (82), the grid gaps on the two plates are misaligned, thus closing the grid door device. When the movable grid plate (83) moves away from the Teflon grid plate (82), the grid gaps on the two plates are aligned, thus opening the grid door device.

[0012] To further elaborate, the discharge equipment (7) includes a feeding equipment frame (71), a discharge roller conveyor (72), and a discharge furnace door device (73). The discharge furnace door device (73) is located at the front end of the discharge roller conveyor (72) and is used to maintain the sealing of the heating chamber during the drying process.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention adopts a multi-temperature zone design, with vertically arranged materials. Hot or cold air is filtered and stirred before heating or cooling the glass substrate. The heating or cooling intensity of each zone is independently controllable, which can meet the curing requirements of different coating materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a vertical roller conveyor drying and heating furnace.

[0016] Figure 2 This is a schematic diagram of the internal structure of a vertical roller conveyor feeding device for a drying and heating furnace.

[0017] Figure 3 A schematic diagram of the feeding furnace door device of a vertical roller conveyor drying and heating furnace feeding equipment;

[0018] Figure 4 A schematic diagram of the first heating chamber structure of a vertical roller conveyor drying and heating furnace;

[0019] Figure 5 A schematic diagram of the first cooling chamber structure of a vertical roller conveyor drying and heating furnace;

[0020] Figure 6 A schematic diagram of the grid door device of a vertical roller conveyor drying and heating furnace;

[0021] Attached diagram labels: 1-Feeding equipment, 2-First heating chamber, 3-Second heating chamber, 4-Third heating chamber, 5-First cooling chamber, 6-Second cooling chamber, 7-Discharge equipment, 11-Feeding equipment frame, 121-Lower roller assembly, 122-Upper roller assembly, 123-Lifting bracket, 124-Lifting drive assembly, 13-Feeding furnace door device, 131-Lifting guide rail assembly, 132-Complete Position spring assembly, 133-clamping cylinder, 134-feed furnace door, 21-return air filter, 22-heating zone conveyor roller, 23-heating resistance wire, 24-suction pump, 25-air duct, 51-fan filter, 52-cooling chamber roller device, 53-exhaust fan assembly, 81-fixed grid plate, 82-Teflon grid plate, 83-movable grid plate, 84-hinge seat, 85-high temperature resistant cylinder assembly. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0026] like Figure 1-6 As shown, this embodiment provides a vertical roller conveyor drying and heating furnace, including a feeding device (1), a first heating chamber (2), a second heating chamber (3), a third heating chamber (4), a first cooling chamber (5), a second cooling chamber (6), a discharging device (7), and a movable gate device (8) connected in sequence; the glass substrate is transferred between each device and chamber via the roller device.

[0027] In this embodiment, the feeding device (1) and the discharging device (7) have similar structures. Taking the feeding device (1) as an example, the feeding device includes a feeding device frame (11), a feeding roller conveyor (12), a furnace door device (13), and a feeding device door (14). The glass substrate is placed in a vertical array along the conveying direction in the feeding roller conveyor (12). The feeding device door (14) is at the front end of the feeding roller conveyor (12), and the furnace door device (13) is at the rear end of the feeding roller conveyor (12). In the discharging device, the furnace door device is located at the front end of the discharging roller conveyor, and the discharging device door is at the rear end of the discharging roller conveyor.

[0028] In this embodiment, the feeding roller conveying device (12) is divided into two parts, including a lower roller group (121), an upper roller group (122), a lifting bracket (123), and a lifting drive assembly (124). The lower roller group (121) is installed on the platform of the feeding equipment frame (11). The lifting drive assembly (124) is installed on the rear column of the feeding equipment frame (11). The lifting bracket (123) is installed on the slide rail of the lifting drive assembly (124) and can slide up and down. The upper roller group (122) is installed on the lifting bracket (123). The rollers of the lower roller group (121) and the upper roller group (122) are provided with V-shaped grooves, and the grooves are aligned in the vertical direction. When conveying the glass substrate, the edge of the glass substrate is stuck in the groove of the upper and lower aligned rollers.

[0029] In this embodiment, the furnace door device (13) includes a lifting guide rail assembly (131), a return spring assembly (132), a clamping cylinder (133), and a feeding furnace door (134). The lifting guide rail assembly (131) is installed on the right column of the feeding equipment frame (11). The return spring assembly (132) is connected to the slide rail slider and the rodless cylinder slider of the lifting guide rail assembly (131) and can extend and retract. The feeding furnace door (134) is installed on... On the reset spring assembly (132), the clamping cylinder (133) is installed on the right column of the equipment frame (11). When the clamping cylinder (133) extends, the spring of the reset spring assembly (132) is clamped, and the feed furnace door (134) is tightly fitted with the outer wall of the first heating chamber (2). When the clamping cylinder (133) retracts, the spring of the reset spring assembly (132) is reset, and the feed furnace door (134) is separated from the outer wall of the first heating chamber (2).

[0030] In this embodiment, the first heating chamber (2), the second heating chamber (3), and the third heating chamber (4) have the same structure. A return air filter (21) is provided above the first heating chamber (2) to maintain the hot air circulation inside the chamber. The heating zone conveying roller (22) is located below the return air filter (21). A heating resistance wire (23) is installed below the heating zone conveying roller (22). A suction pump (24) is installed below the heating resistance wire (23). The suction pump (24) and the return air filter (21) are connected by a pipe to form a return air circulation pipeline. A wind deflector (25) is provided between the return air filter (21), the heating zone conveying roller (22), and the heating resistance wire (23). The wind deflector is designed with an array of porous structures to allow the heat to be evenly distributed.

[0031] In this embodiment, the first cooling chamber (5) and the second cooling chamber (6) have the same structure. A fan filter (51) and an exhaust fan assembly (53) are provided above the first cooling chamber (5). The fan filter (51) is used to maintain the air circulation in the first cooling chamber (5) so that the glass substrate can dissipate heat evenly during the cooling process. The fan filter (51) is located directly above the cooling chamber roller device (52). The exhaust fan assembly (53) is used to slowly extract the hot air in the first cooling chamber (5). The exhaust fan assembly (53) is located behind the fan filter (51).

[0032] In this embodiment, a movable gate device (8) is provided between the third heating chamber (4), the first cooling chamber (5), and the second cooling chamber (6) to prevent hot air of different temperatures from flowing between the different chambers. The movable gate device (8) includes a fixed grid plate (81), a Teflon grid plate (82), a movable grid plate (83), a hinge seat (84), and a high-temperature resistant cylinder assembly (85). The fixed grid plate (81), the Teflon grid plate (82), and the movable grid plate (83) are all provided with elongated grid holes that match the size of the glass substrate. The fixed grid plate (81) is mounted on the frame of the second cooling chamber (6) on the mounting frame, and the Teflon grid plate (82) is mounted on the fixed grid plate (83). 1) The movable grid plate (83) is connected to the frame of the first cooling chamber (5) through the hinge seats (84) installed at its four corners. The cylinder body of the high-temperature resistant cylinder assembly (85) is connected to the first cooling chamber (5). The push rod of the high-temperature resistant cylinder assembly (85) is connected to the movable grid plate (83). When the high-temperature resistant cylinder assembly (85) extends and retracts, it drives the movable grid plate (83) to rotate around the fixed end of the hinge seat (84). When the movable grid plate (83) presses against the Teflon grid plate (82), the grid gaps on the two plates are misaligned, thus closing the grid door device. When the movable grid plate (83) moves away from the Teflon grid plate (82), the grid gaps on the two plates are aligned, thus opening the grid door device.

[0033] In this embodiment, the discharge device (7) includes a feeding device frame (71), a discharge roller conveyor (72), and a discharge furnace door device (73). The discharge furnace door device (73) is located at the front end of the discharge roller conveyor (72) and is used to maintain the sealing of the heating chamber during the drying process.

[0034] The overall equipment workflow is as follows: The loading robotic arm sequentially places glass in a vertical position into the grooves of the roller conveyor of the feeding equipment. When the number of glass pieces placed reaches the maximum buffer capacity of the feeding equipment, the loading robotic arm sends a start signal to the feeding equipment. The feeding equipment opens the feeding chamber door and sends a receiving signal to the first heating chamber. The roller device then transports the glass substrate to the first heating chamber. The heating resistance wire at the bottom of the first heating chamber begins to heat up. The suction pump draws the heated gas downwards into the return air duct and transports it to the return air filter at the top of the first heating chamber. After being filtered, the hot air passes through the porous structure of the air duct and is evenly blown over the glass substrate, drying and heating it. The glass substrate is then transported sequentially through the first, second, and third heating chambers via the roller device. The heating resistance wires in each heating chamber are at the same temperature, ensuring heating uniformity and improving production efficiency. The glass substrate then passes through the first and second cooling chambers. A grid door mechanism is installed between the third heating chamber, the first cooling chamber, and the second cooling chamber to prevent hot air from flowing between chambers of different temperatures, which could affect the uniformity of heat distribution on the glass substrate. As the glass substrate passes through the cooling chambers, a high-efficiency air filter above the cooling chamber blows filtered air from the outside towards the glass substrate. The heated air then passes through a return air duct and is drawn out of the cooling chamber by an exhaust pump, discharged into the factory's waste disposal system. Finally, the glass substrate, having undergone two cooling cycles, is transported by a roller device through the unloading furnace door to the unloading equipment, where an automatic material handling robot moves the glass substrate to the next process.

[0035] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vertical roller conveyor drying and heating furnace, characterized in that, It includes a feeding device (1), a first heating chamber (2), a second heating chamber (3), a third heating chamber (4), a first cooling chamber (5), a second cooling chamber (6), a discharging device (7), and a movable gate device (8) connected in sequence; the glass substrate is transferred between each device and chamber via a roller device.

2. The vertical roller conveyor drying and heating furnace according to claim 1, characterized in that, The feeding device (1) includes a feeding device frame (11), a feeding roller conveyor (12), a furnace door device (13), and a feeding device door (14). The glass substrate is placed in a vertical array along the conveying direction in the feeding roller conveyor (12). The feeding device door (14) is at the front end of the feeding roller conveyor (12), the furnace door device (13) is at the rear end of the feeding roller conveyor (12), the furnace door device (13) is located at the front end of the discharge roller conveyor, and the discharge device door is at the rear end of the discharge roller conveyor.

3. A vertical roller conveyor drying and heating furnace according to claim 2, characterized in that, The feeding roller conveying device (12) includes a lower roller group (121), an upper roller group (122), a lifting bracket (123), and a lifting drive assembly (124). The lower roller group (121) is installed on the platform of the feeding equipment frame (11). The lifting drive assembly (124) is installed on the rear column of the feeding equipment frame (11). The lifting bracket (123) slides on the slide rail of the lifting drive assembly (124) and can slide up and down. The upper roller group (122) is installed on the lifting bracket (123). The rollers of the lower roller group (121) and the upper roller group (122) are provided with V-shaped grooves for placing glass substrates. The grooves are aligned in the vertical direction.

4. A vertical roller conveyor drying and heating furnace according to claim 2, characterized in that, The furnace door device (13) includes a lifting guide rail assembly (131), a return spring assembly (132), a clamping cylinder (133), and a feeding furnace door (134). The lifting guide rail assembly (131) is installed on the right column of the feeding equipment frame (11). The return spring assembly (132) is connected to the slide rail slider and the rodless cylinder slider of the lifting guide rail assembly (131). The feeding furnace door (134) is installed on the return spring assembly (132). The clamping cylinder (133) is installed on the right column of the equipment frame (11).

5. A vertical roller conveyor drying and heating furnace according to claim 1, characterized in that, The structures of the second heating chamber (3) and the third heating chamber (4) are the same as those of the first heating chamber (2). A return air filter (21) is provided above the first heating chamber (2) to maintain the circulation of hot air inside the chamber. The heating zone conveyor roller (22) is located below the return air filter (21). A heating resistance wire (23) is installed below the heating zone conveyor roller (22). A suction pump (24) is installed below the heating resistance wire (23). The suction pump (24) and the return air filter (21) are connected by a pipe to form a return air circulation pipeline. A wind deflector plate (25) is provided between the return air filter (21), the heating zone conveyor roller (22), and the heating resistance wire (23). The wind deflector plate is designed with an array of porous structures to allow the heat to be evenly distributed.

6. A vertical roller conveyor drying and heating furnace according to claim 1, characterized in that, The structure of the first cooling chamber (5) is the same as that of the second cooling chamber (6). A fan filter (51) and an exhaust fan assembly (53) are provided above the first cooling chamber (5). The fan filter (51) is used to maintain the air circulation in the first cooling chamber (5) so that the glass substrate can dissipate heat evenly during the cooling process. The fan filter (51) is located directly above the cooling chamber roller device (52). The exhaust fan assembly (53) is used to slowly extract the hot air in the first cooling chamber (5). The exhaust fan assembly (53) is located behind the fan filter (51).

7. A vertical roller conveyor drying and heating furnace according to claim 1, characterized in that, A movable gate device (8) is provided between the third heating chamber (4), the first cooling chamber (5), and the second cooling chamber (6) to prevent hot air of different temperatures from flowing between the different chambers. The movable gate device (8) includes a fixed grid plate (81), a Teflon grid plate (82), a movable grid plate (83), a hinge seat (84), and a high-temperature resistant cylinder assembly (85). The fixed grid plate (81), the Teflon grid plate (82), and the movable grid plate (83) are all equipped with... The long strip grid holes that match the size of the glass substrate are fixed on the frame of the second cooling chamber (6) on the mounting frame of the fixed grid plate (81). The Teflon grid plate (82) is installed on the fixed grid plate (81). The movable grid plate (83) is connected to the frame of the first cooling chamber (5) through the hinge seats (84) installed at its four corners. The cylinder body of the high-temperature resistant cylinder assembly (85) is connected to the first cooling chamber (5). The push rod of the high-temperature resistant cylinder assembly (85) is connected to the movable grid plate (83).

8. A vertical roller conveyor drying and heating furnace according to claim 1, characterized in that, The discharge equipment (7) includes a feeding equipment frame (11), a discharge roller transmission device (72), and a discharge furnace door device (73). The discharge furnace door device (73) is located at the front end of the discharge roller transmission device (72) and is used to maintain the sealing of the heating chamber during the drying process.

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