An edge puller and a float glass production line

Abstract

The utility model belongs to float glass technical field especially relates to a kind of edge puller and float glass production line.Edge puller includes: edge pull structure, including edge pull bar and the drive mechanism of connecting one end of edge pull bar, edge pull bar is horizontally arranged and another end sliding insertion mounting hole and extends to the inner chamber of tin bath, drive mechanism is used to drive edge pull bar reciprocating movement along horizontal direction;And sealing structure, including first sealing telescopic pipe, second sealing telescopic pipe and sealing sleeve, the telescopic property of second sealing telescopic pipe is greater than the telescopic property of first sealing telescopic pipe, first sealing telescopic pipe, second sealing telescopic pipe and sealing sleeve are all outer sleeve edge pull bar and sequentially set along the axial direction of edge pull bar.The utility model is sealed to edge pull bar and tin bath by segmentation, so that the sealing between first sealing telescopic pipe and tin bath is not prone to loosening, avoid air into tin bath.

Description

Technical Field

[0001] This utility model belongs to the field of float glass technology, and in particular relates to an edge-pulling machine and a float glass production line. Background Technology

[0002] Currently, in float glass production lines, the molten tin at the edges of the tin bath, especially in the wider sections, is largely exposed to the protective gas. If the tin bath is not properly sealed, oxygen from the air can seep into the interior. Since the internal temperature of the tin bath reaches 580–1200°C, the molten tin is oxidized into tin ash. Through convection, some of this tin ash is carried away by the glass conveyor belt. When there is a large amount of tin ash, the glass conveyor belt continuously carries it away, causing it to adhere to the transition rollers. This can easily lead to defects such as tin adhesion to the bottom of the glass sheets and tin ash marks, resulting in product quality losses. In severe cases, a single production line can lose millions of yuan annually. A temporary solution is to blow out the tin bath, typically every two months. However, each purging process requires approximately one hour of downtime, resulting in a loss of one hour's output.

[0003] Currently, the sealing telescopic tube of the edge-pulling machine is sealed to the edge of the solder bath using sealing putty. However, because the edge-pulling rod of the edge-pulling machine is movable and needs to move frequently inside the sealing telescopic tube, it causes the sealing telescopic tube to repeatedly extend and contract. This can easily lead to loosening of the sealing connection between the sealing telescopic tube and the solder bath, and the gaps in the sealing putty will gradually increase, resulting in poor sealing and allowing too much oxygen to enter the solder bath. Utility Model Content The purpose of this application is to provide an edge-pulling machine that addresses the problem of how to improve the sealing performance between the edge-pulling machine and the solder bath.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, an edge-pulling machine is provided for use in conjunction with a solder bath, wherein the wall of the solder bath has mounting holes communicating with its inner cavity, and the edge-pulling machine includes: A pull-edge structure includes a pull-edge rod and a drive mechanism connected to one end of the pull-edge rod. The pull-edge rod is horizontally arranged, and its other end is slidably inserted into the mounting hole and extends into the inner cavity of the solder bath. The drive mechanism is used to drive the pull-edge rod to reciprocate horizontally. The sealing structure includes a first sealing telescopic tube, a second sealing telescopic tube, and a sealing sleeve. The second sealing telescopic tube has a greater telescopic capacity than the first sealing telescopic tube. The first sealing telescopic tube, the second sealing telescopic tube, and the sealing sleeve are all fitted over the pull rod and arranged sequentially along the axial direction of the pull rod. One end of the first sealing telescopic tube and one end of the second sealing telescopic tube are sealed together. The other end of the first sealing telescopic tube is sealed together with the edge of the mounting hole. The sealing sleeve is detachably connected to the pull rod and fits over and seals the other end of the second sealing telescopic tube.

[0005] In some embodiments, the first sealing telescopic tube is a corrugated tube made of stainless steel.

[0006] In some embodiments, the inner diameter of the first sealing telescopic tube is larger than the inner diameter of the second sealing telescopic tube.

[0007] In some embodiments, the second sealing telescopic tube includes a tube spring that overlays the pull rod and a telescopic sleeve that covers the tube spring and is made of a heat-resistant and elastic material.

[0008] In some embodiments, the sealing sleeve has a first position state and a second position state. When the sealing sleeve is in the first position state, the sealing sleeve covers and seals the second sealing telescopic tube. When the sealing sleeve is in the second position state, the sealing sleeve moves a predetermined distance along the axial direction of the pull rod to disengage from the sleeve of the second sealing telescopic tube.

[0009] In some embodiments, the sealing structure further includes a fastening ring for locking the connection between the sealing sleeve, the second sealing telescopic tube, and the pull rod.

[0010] In some embodiments, the edge-pulling machine further includes a sealing ring, a first flange connected to the first sealing telescopic tube, and a second flange connected to the second sealing telescopic tube, wherein the first flange is detachably connected to the second flange, and the sealing ring is located between the first flange and the second flange.

[0011] In some embodiments, the edge-pulling machine further includes a third flange, which is connected to both ends of the first sealing telescopic tube, and the third flange is sealed to the tin bath and communicates with the mounting hole.

[0012] In some embodiments, the drive mechanism includes a drive motor, a reducer, and a controller, wherein the reducer is drively connected to the pull rod and the drive motor, and the controller is used to control the drive motor.

[0013] Secondly, a float glass production line is provided, which includes the edge-pulling machine and the float glass production line also includes a tin bath.

[0014] The beneficial effects of this application are as follows: The pull rod is driven to reciprocate horizontally via a drive mechanism. During this movement, the pull rod causes the first and second sealing telescopic tubes to undergo simultaneous elastic deformation. Since the elasticity of the first sealing telescopic tube is less than that of the second sealing telescopic tube, the second sealing telescopic tube undergoes the main elastic deformation to adapt to the reciprocating motion of the pull rod, while the first sealing telescopic tube undergoes only minor or negligible elastic deformation. This reduces the impact of the pull rod's reciprocating motion on the seal between the first sealing telescopic tube and the tin bath. This segmented sealing of the pull rod and the tin bath makes the seal between the first sealing telescopic tube and the tin bath less prone to loosening, preventing air from entering the tin bath and effectively preventing oxygen from seeping into the tin bath cavity. This reduces the oxidation of molten tin at high temperatures, improving the product quality and economic efficiency of the float glass production line, while also avoiding losses caused by frequent purging shutdowns. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the float glass production line provided in the embodiments of this application; Figure 2 This is a schematic diagram of the edge-pulling machine and solder bath provided in the embodiments of this application; Figure 3 This is a schematic diagram of the principle of the edge-pulling machine and the solder bath provided in another embodiment of this application.

[0017] The following are the labeling elements in the figure: 100. Float glass production line; 110. Edge-pulling machine; 101. Tin bath; 102. Mounting holes; 11. First flange; 12. Second flange; 13. Third flange; 20. Sealed structure; 21. First sealing expansion joint; 22. Second sealing expansion joint; 23. Sealing sleeve; 30. Edge-pulling structure; 31. Tie rod; 32. Drive mechanism; 321. Reducer; 322. Drive motor; 323. Controller. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of this application.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. 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 technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0020] Please see Figures 1 to 3 This application provides an edge-pulling machine 110 and a float glass production line 100 having the same.

[0021] The float glass production process is as follows: raw material preparation → melting into molten glass → narrow flow tank → float forming (using the combined effects of buoyancy, surface tension, gravity, and attraction of molten tin, molten glass, and protective gas, as well as the cooling effect of the forming water bath, to form glass sheets of various thicknesses and widths from the molten glass flowing down from the furnace) → annealing → inspection → cutting → stacking → packaging → flat glass products.

[0022] Terminology Explanation: 1. Tin bath 101 refers to the forming equipment in the float glass process. It is a sealed container filled with a large amount of liquid tin and its auxiliary equipment. The internal temperature reaches 580-1200℃ and is filled with a nitrogen and hydrogen mixed protective gas. This process is located after the melting process. The molten glass produced by melting flows into the tin bath 101 through the flow channel and trough. It floats, spreads, polishes, forms, and cools on the surface of the molten tin in the tin bath 101. Under the control of the edge-drawing machine 110 and the roller conveyor, it forms glass ribbons of various thicknesses and widths as required. The glass ribbons are then drawn by the transition rollers at the outlet of the tin bath 101 to the annealing furnace for annealing.

[0023] 2. The wide section of the solder bath 101 refers to the wider front section of the solder bath 101, which is wider than the rear section. The edge-pulling machine 110 operates in the wide section of the solder bath 101. Adjusting the width and thickness of the glass plate using the edge-pulling machine 110 is crucial for ensuring a tight seal between the edge-pulling machine 110 and the solder bath 101. Poor sealing allows oxygen from the air to seep into the solder bath 101, causing oxidation of the molten solder and producing solder ash and dripping material. The solder bath 101 has mounting holes 102 in its wall that connect to its internal cavity. Please see Figures 1 to 3 The edge-pulling machine 110 includes an edge-pulling structure 30 and a sealing structure 20.

[0024] The edge-pulling structure 30 includes an edge-pulling rod 31 and a driving mechanism 32 connected to one end of the edge-pulling rod 31. The edge-pulling rod 31 is arranged horizontally and its other end is slidably inserted into the mounting hole 102 and extends into the inner cavity of the tin bath 101. The driving mechanism 32 is used to drive the edge-pulling rod 31 to reciprocate in the horizontal direction to perform operations on the molten glass in the tin bath 101.

[0025] Please see Figures 1 to 3 The sealing structure 20 includes a first sealing telescopic tube 21, a second sealing telescopic tube 22, and a sealing sleeve 23. The telescopicity of the second sealing telescopic tube 22 is greater than that of the first sealing telescopic tube 21. Telescopicity refers to the elastic deformation capacity. Under the same tensile force, the second sealing telescopic tube 22 is more likely to undergo elastic deformation than the first sealing telescopic tube 21, and the degree of elastic deformation is greater. That is, when elastic tension occurs, the elongation of the second sealing telescopic tube 22 is greater than that of the first sealing telescopic tube 21.

[0026] Please see Figures 1 to 3 The first sealing telescopic tube 21, the second sealing telescopic tube 22, and the sealing sleeve 23 are all sleeved on the pull rod 31 and arranged sequentially along the axial direction of the pull rod 31. One end of the first sealing telescopic tube 21 and one end of the second sealing telescopic tube 22 are sealed together. The other end of the first sealing telescopic tube 21 is sealed together with the edge of the opening of the mounting hole 102. The sealing sleeve 23 is detachably connected to the pull rod 31 and sleeved on and seals the other end of the second sealing telescopic tube 22, thereby achieving a seal from the opening of the mounting hole 102 to the second sealing telescopic tube 22, preventing outside air from entering the tin bath 101.

[0027] Please see Figures 1 to 3The edge-pulling machine 110 provided in this application embodiment drives the edge-pulling rod 31 to reciprocate in the horizontal direction via the drive mechanism 32. During the movement, the edge-pulling rod 31 causes the first sealing telescopic tube 21 and the second sealing telescopic tube 22 to undergo elastic deformation simultaneously. Since the extensibility of the first sealing telescopic tube 21 is less than that of the second sealing telescopic tube 22, the second sealing telescopic tube 22 undergoes the main elastic deformation to adapt to the reciprocating motion of the edge-pulling rod 31, while the first sealing telescopic tube 21 undergoes a small elastic deformation or basically no elastic deformation. This variation reduces the impact of the reciprocating motion of the pull rod 31 on the seal between the first sealing telescopic tube 21 and the tin bath 101. This segmented sealing of the pull rod 31 and the tin bath 101 makes the seal between the first sealing telescopic tube 21 and the tin bath 101 less prone to loosening, preventing air from entering the tin bath 101, effectively preventing oxygen from seeping into the inner cavity of the tin bath 101, reducing the generation of tin ash from the oxidation of high-temperature tin liquid, improving the product quality and economic benefits of the float glass production line 100, and avoiding losses caused by frequent purging shutdowns.

[0028] It is understandable that the first sealing expansion tube 21 and the edge of the mounting hole 102 can be sealed with sealing mud or by setting an annular sealing element, such as a high-temperature resistant rubber part. There are no restrictions here, and the choice can be made according to the actual situation.

[0029] Please see Figures 1 to 3 In some embodiments, the first sealing telescopic tube 21 is a corrugated tube made of stainless steel.

[0030] Optionally, by using a stainless steel corrugated pipe as the first sealing expansion tube 21, the corrosion resistance and fatigue resistance in the high-temperature tin bath 101 environment (580~1200℃) are enhanced, the long-term stability and service life of the sealing structure 20 are improved, the gap expansion caused by loosening of the sealing mud is avoided, thereby continuously improving the sealing effect of the tin bath 101 and reducing the generation of tin ash caused by oxygen infiltration.

[0031] Please see Figures 1 to 3 In some embodiments, the inner diameter of the first sealing telescopic tube 21 is larger than the inner diameter of the second sealing telescopic tube 22.

[0032] Optionally, by designing the inner diameter of the first sealing telescopic tube 21 to be larger than the inner diameter of the second sealing telescopic tube 22, the friction between the pull rod 31 and the first sealing telescopic tube 21 during movement can be reduced. The stainless steel first sealing telescopic tube 21 has high temperature resistance, and the larger inner diameter of the first sealing telescopic tube 21 provides sufficient space to dissipate the heat conducted from the tin bath 101, reducing the impact of heat on the second sealing telescopic tube 22 and improving the overall sealing performance, reliability, and durability.

[0033] Please see Figures 1 to 3 In some embodiments, the second sealing telescopic tube 22 includes a tube spring that covers the pull rod 31 and a telescopic sleeve that covers the tube spring and is made of a heat-resistant and elastic material.

[0034] Optionally, the heat-resistant and elastic material can be high-temperature resistant silicone rubber. High-temperature resistant silicone rubber is a type of silicone rubber with excellent high-temperature resistance, typically maintaining stable physical properties within a temperature range of -60°C to 300°C. It is cross-linked from siloxanes and other modified materials, exhibiting good thermal stability, aging resistance, and oxidation resistance, thus making it widely used in various high-temperature environments. High-temperature resistant silicone rubber has a low coefficient of friction and good compressive strength, maintaining good elasticity and flexibility at high temperatures, and demonstrating strong corrosion resistance when exposed to greases, acids, alkalis, and other chemicals.

[0035] By combining the tube spring with the telescopic sleeve, the telescopic flexibility, elasticity, and high temperature resistance of the second sealing telescopic tube 22 are improved, ensuring that the second sealing telescopic tube 22 maintains the integrity of the seal during the frequent reciprocating movement of the pull rod 31, and preventing deformation that could lead to gas infiltration.

[0036] Please see Figures 1 to 3 In some embodiments, the sealing sleeve 23 has a first position state and a second position state. When the sealing sleeve 23 is in the first position state, the sealing sleeve 23 covers and seals the second sealing telescopic tube 22. When the sealing sleeve 23 is in the second position state, the sealing sleeve 23 moves a predetermined distance along the axial direction of the pull rod 31 to disengage from the sleeve of the second sealing telescopic tube 22.

[0037] Please see Figures 1 to 3 Optionally, the sealing sleeve 23 can be switched between the first position state and the second position state to switch between engaging and disengaging. In the second position state, it is convenient to maintain and inspect the second sealing telescopic tube 22, avoid sealing failure caused by disassembly difficulties, and improve the convenience of operation and maintenance of the sealing structure 20.

[0038] Optionally, the sealing sleeve 23 is made of aluminum carbonate fiber, typically produced by reacting aluminum sources (such as aluminum salts) and carbonate ions through high-temperature reaction or solution spinning. It combines the excellent properties of aluminum and carbonates, exhibiting high thermal stability, corrosion resistance, and good mechanical strength. Aluminum carbonate fiber can be used in high-temperature insulation, fire-resistant sealing, and other applications.

[0039] Please see Figures 1 to 3 In some embodiments, the sealing structure 20 further includes a fastening ring for locking the connection between the sealing sleeve 23, the second sealing telescopic tube 22, and the pull rod 31.

[0040] Optionally, the fastening ring can be a hose clamp, which locks the connection between the sealing sleeve 23, the second sealing telescopic tube 22 and the pull rod 31, thereby enhancing the fixing strength and sealing pressure between the multi-layer components, preventing loosening caused by vibration or thermal expansion, improving the overall sealing durability under high temperature conditions, and preventing oxidation of molten solder caused by oxygen infiltration.

[0041] Please see Figures 1 to 3 In some embodiments, the edge-pulling machine 110 further includes a sealing ring, a first flange 11 connected to the first sealing telescopic tube 21, and a second flange 12 connected to the second sealing telescopic tube 22. The first flange 11 is detachably connected to the second flange 12, and the sealing ring is located between the first flange 11 and the second flange 12.

[0042] Please see Figures 1 to 3 Optionally, the sealing ring is a graphite ring. The sealing ring is combined with the detachable connection of the first flange 11 and the second flange 12 to achieve reliable docking and sealing of the first sealing telescopic tube 21 and the second sealing telescopic tube 22, ensuring the airtightness of the pull rod 31 during movement, and improving the convenience of maintenance and the efficiency of component replacement.

[0043] Understandably, the first flange 11 and the second flange 12 are detachably connected by a plurality of bolts and nuts.

[0044] Please see Figures 1 to 3 In some embodiments, the edge-pulling machine 110 further includes a third flange 13, which is connected to both ends of the first sealing telescopic tube 21, and the third flange 13 is sealed to the tin bath 101 and communicates with the mounting hole 102.

[0045] Optionally, the first sealing expansion tube 21 is fixed to the mounting hole 102 via the third flange 13, and circumferential sealing is performed by sealing mud to strengthen the overall sealing connection between the pull rod 31 and the solder bath 101, ensuring a stable connection in a high-temperature solder environment.

[0046] Please see Figures 1 to 3 In some embodiments, the drive mechanism 32 includes a drive motor 322, a reducer 321, and a controller 323. The reducer 321 is connected to the pull rod 31 and the drive motor 322, and the controller 323 is used to control the drive motor 322.

[0047] Optionally, the drive motor 322 can be a servo motor. The drive motor 322 transmits power to the pull rod 31 through the reducer 321 to realize the precise reciprocating movement and speed control of the pull rod 31.

[0048] This utility model also proposes a float glass production line 100, which includes an edge-pulling machine 110. The specific structure of the edge-pulling machine 110 is as described in the above embodiments. Since this float glass production line 100 adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0049] In some embodiments, the float glass production line 100 further includes the tin bath 101.

[0050] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A stripping machine, used in conjunction with a solder bath, wherein the wall of the solder bath has mounting holes communicating with its inner cavity, characterized in that, The edge-pulling machine includes: A pull-edge structure includes a pull-edge rod and a drive mechanism connected to one end of the pull-edge rod. The pull-edge rod is horizontally arranged, and its other end is slidably inserted into the mounting hole and extends into the inner cavity of the solder bath. The drive mechanism is used to drive the pull-edge rod to reciprocate horizontally. The sealing structure includes a first sealing telescopic tube, a second sealing telescopic tube, and a sealing sleeve. The second sealing telescopic tube has a greater telescopic capacity than the first sealing telescopic tube. The first sealing telescopic tube, the second sealing telescopic tube, and the sealing sleeve are all fitted over the pull rod and arranged sequentially along the axial direction of the pull rod. One end of the first sealing telescopic tube and one end of the second sealing telescopic tube are sealed together. The other end of the first sealing telescopic tube is sealed together with the edge of the mounting hole. The sealing sleeve is detachably connected to the pull rod and fits over and seals the other end of the second sealing telescopic tube.

2. The edge-pulling machine as described in claim 1, characterized in that: The first sealing telescopic tube is a corrugated pipe made of stainless steel.

3. The edge-pulling machine as described in claim 1, characterized in that: The inner diameter of the first sealing telescopic tube is larger than the inner diameter of the second sealing telescopic tube.

4. The edge-pulling machine as described in claim 1, characterized in that: The second sealing telescopic tube includes a tube spring that covers the pull rod and a telescopic sleeve made of a heat-resistant and elastic material that covers the tube spring.

5. The edge-pulling machine as described in any one of claims 1-4, characterized in that: The sealing sleeve has a first position state and a second position state. When the sealing sleeve is in the first position state, the sealing sleeve covers and seals the second sealing telescopic tube. When the sealing sleeve is in the second position state, the sealing sleeve moves a predetermined distance along the axial direction of the pull rod to disengage from the sleeve of the second sealing telescopic tube.

6. The edge-pulling machine as described in any one of claims 1-4, characterized in that: The sealing structure also includes a fastening ring, which is used to lock the connection between the sealing sleeve, the second sealing telescopic tube, and the pull rod.

7. The edge-pulling machine as described in any one of claims 1-4, characterized in that: The edge-pulling machine also includes a sealing ring, a first flange connecting the first sealing telescopic tube, and a second flange connecting the second sealing telescopic tube. The first flange is detachably connected to the second flange, and the sealing ring is located between the first flange and the second flange.

8. The edge-pulling machine as described in claim 7, characterized in that: The edge-pulling machine also includes a third flange, which is connected to both ends of the first sealing telescopic tube, and the third flange is sealed to the tin bath and connected to the mounting hole.

9. The edge-pulling machine as described in any one of claims 1-4, characterized in that: The drive mechanism includes a drive motor, a reducer, and a controller. The reducer is connected to the pull rod and the drive motor, and the controller is used to control the drive motor.

10. A float glass production line, characterized in that, The float glass production line includes the edge-pulling machine as described in any one of claims 1-9, and further includes a tin bath.

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