Runner flashboard replacing method suitable for Mini LED (Light Emitting Diode) back plate float glass

Abstract

The invention discloses a runner flashboard replacing method suitable for Mini LED backboard float glass. The runner flashboard replacing method comprises the steps that S1, a new lower flashboard is preheated; s2, the sealing strips around the standby flashboard are dismantled, the sealing strips around the runner flashboard are loosened, and the sealing strips around the runner flashboard are all dismantled after half of the runner flashboard is lifted; s3, lowering the standby flashboard, and when the standby flashboard is in contact with the molten glass, raising the runner flashboard to control the width of the onion head until the runner flashboard is lifted out of the molten glass; s4, the runner flashboard is lifted out of the runner, the lower flashboard is detached and moved out, and then the preheated new lower flashboard is moved to the position below the upper flashboard and then connected with the upper flashboard; s5, gradually descending the replaced runner flashboard, and meanwhile, raising the standby flashboard to control the width of the onion head until the standby flashboard leaves the glass liquid; and S6, the runner flashboard and the standby flashboard are sealed. The runner flashboard is designed into the upper part and the lower part, so that materials can be saved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of flow channel gate plate replacement, and in particular to a method for replacing a flow channel gate plate applicable to Mini LED backplane float glass. Background Art

[0002] The runner gate is a key component used to control and adjust the flow direction of molten glass in a glass production line. The runner gate is usually made of high-temperature and corrosion-resistant materials, such as refractory bricks, alumina ceramics or special alloy materials, which can withstand high temperatures of up to 1500°C in glass furnaces. The design of the runner gate is usually simple. It is generally a flat or slightly curved plate structure that can be inserted into the runner to control the flow direction of the glass liquid. The gate may have one or more openings to adjust the flow of the glass liquid. The runner gate usually has the following functions: 1) Control the flow direction: By adjusting the position of the gate, the flow direction of the molten glass in the runner can be controlled to flow to a specific production line or molding equipment. 2) Adjust the flow: By changing the opening of the gate, the flow of molten glass can be adjusted to adapt to different production speeds and product requirements. 3) Isolation and maintenance: When other components in the runner need to be maintained or replaced, the gate can be used to isolate the glass liquid to prevent the loss of molten glass.

[0003] The gate is usually installed at the inlet or outlet of the flow channel, and its movement is controlled by mechanical devices (such as hydraulic or pneumatic systems). During the production process, the gate may be opened and closed frequently to adapt to the changes in production rhythm. Due to long-term exposure to high temperature and chemical corrosion, the gate will gradually wear out, so it needs to be regularly inspected and replaced to ensure production continuity and glass quality.

[0004] In glass production, the lower part of the runner gate that directly contacts the glass liquid will be more severely corroded. However, the runner gate is usually replaced as a whole piece at present, which means that the upper part of the runner gate that is not corroded or less corroded is also replaced, resulting in a waste of this part of the material and an increase in production costs. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a method for replacing the flow channel gate plate suitable for Mini LED backplane float glass. The flow channel gate plate is designed to be divided into an upper and lower part, and a slide rail and a hydraulic cylinder are used to replace the lower gate plate that is more severely corroded. On the one hand, it can save materials and reduce production costs. On the other hand, it can more efficiently complete the gate plate replacement and improve work efficiency.

[0006] The technical solution of the present invention is: A method for replacing a flow channel gate plate applicable to a Mini LED backplane float glass, wherein the flow channel is provided with a flow channel gate plate and a spare gate plate, wherein the flow channel gate plate comprises an upper gate plate and a lower gate plate, and the upper gate plate and the lower gate plate are detachably connected; the method for replacing the flow channel gate plate comprises the following steps: S1 preheats the new lower gate; S2 Remove the sealing strips around the spare gate, loosen the sealing strips around the flow gate, and remove all the sealing strips around the flow gate when the flow gate is half lifted; S3 lowers the standby gate, and when the standby gate contacts the glass liquid, raises the runner gate to control the onion width until the runner gate is lifted out of the glass liquid; S4 lifts the flow channel gate out of the flow channel, removes the lower gate and moves it out, and then moves the preheated new lower gate under the upper gate and connects it to the upper gate; S5 gradually lowers the replaced runner gate and raises the spare gate to control the onion width until the spare gate leaves the glass liquid; S6 sealed flow gate and spare gate.

[0007] Preferably, before replacing the lower gate plate, the thickness of the glass is adjusted to 5 mm, the width is adjusted to 3500 mm, and the edge pressing amount of the edge drawing machine is adjusted to more than 300 mm.

[0008] Preferably, in step S4, after the lower gate plate is removed, the flat wall and the flow channel wall around the flow channel gate plate are cleaned.

[0009] Preferably, in step S4, reserved openings are provided on the two side walls of the flow channel, and two slide rails are pushed in from both sides of the flow channel through the reserved openings; when moving out the lower gate plate, the flow channel gate plate is first lowered onto the slide rail, the upper gate plate is lifted up after the lower gate plate is removed, and then the hydraulic cylinder is used on one side of the slide rail to move it out from the other side of the slide rail; when the new lower gate plate is moved in, it is first hung on the hydraulic cylinder on the slide rail, and then the hydraulic cylinder is used to push it into the middle position and then connect it with the lowered upper gate plate.

[0010] Preferably, a slide plate is provided on the slide rail, a pulley is provided at the bottom of the slide plate, and a slide groove matched with the pulley is provided on the slide rail. When the lower gate plate is moved out and a new lower gate plate is moved in, it is placed on the slide plate and then moved in and out.

[0011] Preferably, the hydraulic cylinder is arranged on a lift, and the lift is used to lift and lower the hydraulic cylinder to push the lower gate plate, the new lower gate plate and the slide plate.

[0012] Preferably, after the new lower gate is connected to the upper gate, the flow channel gate is moved upward, and then the slide rail is removed, and the reserved opening on the flow channel is filled tightly.

[0013] Preferably, in step S4, when the new lower gate is moved in, it is necessary to ensure that the gaps between the lower gate and the left and right sides of the flow channel wall are equal, both of which are 3-5 mm.

[0014] Preferably, in step S6, before sealing the flow channel gate and the sealing gate, the glass on the lower edge of the spare gate is scraped off with a hook, and then the glass on the lower edge of the spare gate is scraped clean repeatedly by tracking and observing.

[0015] Preferably, an inverted T-shaped card block is provided at the bottom of the upper gate plate, and an inverted T-shaped card slot is correspondingly provided at the top of the lower gate plate, and the card block is inserted into the card slot to detachably connect the upper gate plate and the lower gate plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In view of the problem that the flow gate plate is expensive and most of the parts that are not corroded by the glass liquid must be replaced when replaced, which leads to waste of materials and increased production costs, the invention proposes a method for replacing the flow gate plate suitable for Mini LED backplane float glass. The flow gate plate is designed to be divided into two parts, the upper and lower parts, and the lower gate plate that is more severely corroded is replaced with a slide rail and a hydraulic cylinder. On the one hand, it can save materials and reduce production costs, and on the other hand, it can more efficiently complete the gate plate replacement and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of replacing the flow channel gate plate of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the flow channel gate and the spare gate of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the upper gate plate and the lower gate plate of the present invention.

[0020] In the figure, 1, flow channel; 101, reserved opening; 201, upper gate; 202, lower gate; 3, spare gate; 4, slide rail; 5, slide plate; 501, pulley; 601, block; 602, slot. DETAILED DESCRIPTION

[0021] In order to enable persons skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0022] Example 1 This embodiment provides a method for replacing a flow channel gate for Mini LED backplane float glass, wherein the flow channel 1 is provided with a flow channel gate and a spare gate 3, the spare gate 3 is an integrated structure, the flow channel gate includes an upper gate 201 and a lower gate 202, the upper gate 201 and the lower gate 202 are detachably connected, and when replacing the flow channel gate, only the lower gate 202 needs to be replaced. The connection method of the upper gate 201 and the lower gate 202 is as follows: Figure 3 As shown, an inverted T-shaped block 601 is provided at the bottom of the upper gate plate 201, and an inverted T-shaped slot 602 is correspondingly provided at the top of the lower gate plate 202. The block 601 is inserted into the slot 602 from the side to detachably connect the upper gate plate 201 and the lower gate plate 202.

[0023] Specifically, the method for replacing the flow channel gate comprises the following steps: 1. Preparation before operation 1.1. Place the new lower gate 202 into the gate preheating furnace, and seal the gate brick part. Do not wrap the hanging steel structure inside when sealing; 1.2. Preheat the new lower gate plate 202 according to the conventional gate plate heating plan to prevent process defects caused by uneven temperature of the upper and lower gate plates 202 resulting in poor fitting; test whether the electric hoist and other equipment are normal.

[0024] 2. Operation plan 2.1. Remove the seals around the flow gate and spare gate 3 2.1.1 Notify PC and QC to start replacing the gate; 2.1.2. Before replacing the gate, adjust the edge pressing amount of the edge drawing machine to more than 300mm, adjust the glass thickness to 5mm and the width to 3500mm; 2.1.3. Remove the sealing strip around the spare gate 3, loosen the sealing strip around the flow channel gate, and remove all the sealing strips around the flow channel gate when the flow channel gate is half lifted.

[0025] 2.2. Start pouring to the spare gate 3 to control the flow 2.2.1. First lower the spare gate 3. When the spare gate 3 contacts the glass liquid, the onion head will be reduced. Appropriately raise the flow channel gate to control the onion head width. 2.2.2. Then continue to lower the standby gate 3 and lift the flow channel gate according to the width of the onion head; 2.2.3. When the runner gate is about to lift the glass liquid, slow down the speed. The onion head will suddenly increase in size when the runner gate is lifted from the glass liquid. Therefore, it is necessary to timely adjust the height of the standby gate 3, the speed, angle and depth of the edge drawing machine, the drawing speed, etc. to control the width of the onion head to prevent problems such as sticking to the edge, falling off the edge, full slot and broken plate due to the onion head being too large; 2.2.4. After the runner gate is raised to a certain height above the glass liquid, remove the bolts and springs on the hanging steel structure on the left and right sides of the runner gate.

[0026] 2.3. Replace the flow channel gate 2.3.1. Open the reserved openings 101 on both sides of the flow channel 1 (such as Figure 2 As shown), the on-site personnel extend the slide rail 4 from both sides into the glass liquid of the flow channel 1, and then place the elevator on one side of the slide rail 4, and the hydraulic cylinder is fixed on the elevator; a slide plate 5 is provided on the slide rail 4, a pulley 501 is provided at the bottom of the slide plate 5, and a slide groove adapted to the pulley 501 is provided on the slide rail 4; the slide plate 5 is pushed under the flow channel gate plate by the hydraulic cylinder, and the flow channel gate plate is lowered onto the slide plate 5, and the upper gate plate 201 is raised after the lower gate plate 202 is removed, and then the lower gate plate 202 is pushed out from the other side of the slide rail 4 by the hydraulic cylinder, and it is placed aside by the electric hoist, and the flat wall around the flow channel gate plate and the flow channel 1 wall are cleaned; then the hydraulic cylinder is moved to the other side of the slide rail 4 and the slide plate 5 is pushed to one end of the original position of the hydraulic cylinder; 2.3.2. Use an electric hoist to lift the new lower gate plate 202 from the gate plate preheating furnace, slowly hang it on the slide plate 5, and then use a hydraulic cylinder to push it to the middle position and connect it to the descending upper gate plate 201 through the clamping block 601 and the clamping groove 602 (such as Figure 1 As shown), during the process, it is necessary to ensure that the gaps between the new lower gate plate 202 and the left and right sides of the flow channel 1 wall are equal, both of which are 3-5mm; then the flow channel gate plate rises, the slide rail 4 and the elevator are removed, and the reserved opening 101 is filled tightly; 2.3.3. Install the bolts and springs on the hanging steel structure on the left and right sides of the flow gate.

[0027] 2.4. Start to reverse the flow channel gate to control the flow 2.4.1. The runner gate gradually descends, and when it is close to the glass liquid, it slows down. Because the flow rate will suddenly decrease when the runner gate contacts the glass liquid, and the onion head will shrink rapidly. It is necessary to raise the spare gate 3, reduce the speed of the edge drawing machine and the pulling speed, and push the edge drawing machine to prevent the edge from falling off; 2.4.2. Then continue to lower the flow channel gate, and lift the spare gate 3 according to the width of the onion head until the spare gate 3 leaves the glass liquid; 2.4.3. When the runner gate is lowered, observe the changes in the front, back, left and right gaps of the runner gate.

[0028] 2.5. Sealing channel gate and spare gate 3 2.5.1. After the spare gate 3 leaves the glass liquid, use a hook to scrape off the glass on the lower edge of the spare gate 3. Then follow up and observe repeatedly to scrape the glass on the lower edge of the spare gate 3 clean; 2.5.2. Seal the area around the flow channel gate and spare gate 3 to ensure that there is no fire leakage.

Claims

1. A method for replacing a flow channel gate plate for Mini LED backplane float glass, characterized in that: The flow channel (1) is provided with a flow channel gate and a spare gate (3), wherein the flow channel gate comprises an upper gate (201) and a lower gate (202), and the upper gate (201) and the lower gate (202) are detachably connected; the method for replacing the flow channel gate comprises the following steps: S1 preheats the new lower gate (202); S2 removes the sealing strip around the spare gate (3), loosens the sealing strip around the flow gate, and completely removes the sealing strip around the flow gate when the flow gate is halfway lifted; S3: lowering the standby gate (3), and when the standby gate (3) contacts the glass liquid, raising the flow channel gate to control the onion width until the flow channel gate is lifted out of the glass liquid; S4: lift the flow channel gate out of the flow channel (1), remove the lower gate (202) and move it out, then move the preheated new lower gate (202) under the upper gate (201) and connect it to the upper gate (201); S5 gradually lowers the replaced flow channel gate, and at the same time raises the spare gate (3) to control the onion width until the spare gate (3) leaves the glass liquid; S6 seals the flow channel gate and the backup gate (3).

2. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: Before replacing the lower gate plate (202), adjust the thickness of the glass to 5mm, the width to 3500mm, and the edge pressing amount of the edge drawing machine to more than 300mm.

3. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: In step S4, after the lower gate plate (202) is removed, the flat wall around the gate plate of the flow channel and the wall of the flow channel (1) are cleaned.

4. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: In step S4, reserved openings (101) are provided on the two side walls of the flow channel (1), and two slide rails (4) are pushed in from the two sides of the flow channel (1) through the reserved openings (101); when the lower gate plate (202) is moved out, the flow channel gate plate is first lowered onto the slide rail (4), the lower gate plate (202) is removed, and then the upper gate plate (201) is raised, and then the hydraulic cylinder is used on one side of the slide rail (4) to move it out from the other side of the slide rail (4); when the new lower gate plate (202) is moved in, it is first hung on the hydraulic cylinder on the slide rail (4), and then the hydraulic cylinder is used to push it into the middle position and then connect it to the lowered upper gate plate (201).

5. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 4, characterized in that: A slide plate (5) is arranged on the slide rail (4), a pulley (501) is arranged at the bottom of the slide plate (5), and a slide groove matched with the pulley (501) is arranged on the slide rail (4). When the lower gate plate (202) is moved out and a new lower gate plate (202) is moved in, it is placed on the slide plate (5) and then moved in and out.

6. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 5, characterized in that: The hydraulic cylinder is arranged on the lift, and the lift is used to lift and lower the hydraulic cylinder to push the lower gate plate (202), the new lower gate plate (202) and the slide plate (5).

7. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 4, characterized in that: After the new lower gate plate (202) is connected to the upper gate plate (201), the flow channel gate plate is moved upward, and then the slide rail (4) is removed, and the reserved opening (101) on the flow channel (1) is filled tightly.

8. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: In step S4, when the new lower gate plate (202) is moved in, it is necessary to ensure that the gaps between it and the left and right sides of the flow channel (1) are equal, both of which are 3-5 mm.

9. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: In step S6, before sealing the flow channel gate and the sealing gate, the glass on the lower edge of the spare gate (3) is scraped off with a hook, and then the glass on the lower edge of the spare gate (3) is scraped clean repeatedly by tracking and observing.

10. The method for replacing a flow channel gate plate applicable to Mini LED backplane float glass according to claim 1, characterized in that: An inverted T-shaped clamping block (601) is provided at the bottom of the upper gate plate (201), and an inverted T-shaped clamping groove (602) is correspondingly provided at the top of the lower gate plate (202); the clamping block (601) is inserted into the clamping groove (602) so that the upper gate plate (201) and the lower gate plate (202) are detachably connected.

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