Switching device for heating wires of forming furnace

Abstract

The utility model discloses a switching device for a heating wire of a forming furnace, and relates to the technical field of glass production, the switching device for the heating wire of the forming furnace comprises a switching structure, a heat insulation structure, a support and an electric connection module, the switching structure extends along the horizontal direction, and the switching structure is detachably inserted into a mounting port; the two supports are arranged on the side, facing the mounting opening, of the switching structure in a spaced mode, and each support extends out of the mounting opening in the direction from the switching structure to the interior of the forming furnace. An electric heating wire is arranged between the two supports, and a heat insulation gap is formed between the electric heating wire and the switching structure; the heat insulation structure is arranged on the switching structure and contained in the heat insulation gap. The two electric connection modules and the two electric connection ports are arranged in a one-to-one correspondence mode. According to the utility model, the switching structure is detachably inserted into the side wall of the forming furnace, and the support, the heating wire, the heat insulation structure and the electric connection module are arranged on the switching structure, so that the heating wire can be quickly replaced, the production efficiency is improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass production technical field, especially a kind of switching device for forming furnace electric heating wire. BACKGROUND

[0002] With the rapid development of information technology and manufacturing, ultra-thin glass has been widely used in various electronic devices due to its excellent optical performance, mechanical strength and light and thin characteristics. As one of the main production methods of ultra-thin glass, the overflow down-draw forming technology has undergone years of development and improvement, and has gradually become the mainstream production process in the industry. The overflow down-draw forming equipment usually includes an overflow container and a forming furnace. The forming furnace is provided with a vertical forming channel. The glass liquid in the overflow container overflows through the forming channel and gradually cools and forms in the process.

[0003] In order to ensure that the glass liquid cools stably according to the viscosity-temperature curve of the glass characteristics, an electric heating wire is usually provided on the side wall of the forming channel. However, in the actual production process, when the glass ribbon formed by the overflow of the glass liquid flows through the forming channel, it may swing due to equipment stability or other reasons, which easily causes the glass ribbon to stick to the electric heating wire on the inner wall of the forming furnace body.

[0004] At present, the industry generally uses the method of manually using tools to extend into the forming channel to solve the problem of glass ribbon sticking and replace the damaged electric heating wire. However, this processing method is slow and may cause blockage, affecting production efficiency. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a switching device for electric heating wire of forming furnace, which aims to improve the maintenance efficiency of glass ribbon sticking to electric heating wire and improve the performance and production efficiency of overflow down-draw forming equipment.

[0006] To achieve the above purpose, the switching device for electric heating wire of forming furnace provided by the utility model is characterized in that the side wall of the forming furnace is provided with a mounting port and two electric connection ports. The mounting port extends along the horizontal direction, and the two electric connection ports are respectively arranged at both ends of the mounting port along the extension direction thereof.

[0007] The switching device for electric heating wire of forming furnace comprises:

[0008] The switching structure extends along the horizontal direction, and the switching structure is detachably inserted into the mounting port.

[0009] Two supports, two of the supports are arranged on a side of the switching structure facing the installation opening, and each of the supports extends out of the installation opening from the switching structure towards the inside of the forming furnace; the electric heating wire is arranged between the two supports, and the electric heating wire and the switching structure have a heat insulation gap therebetween;

[0010] A heat insulation structure is arranged on the switching structure and accommodated in the heat insulation gap;

[0011] Two electric connection modules, two of the electric connection modules are arranged one-to-one with two of the electric connection openings, and each of the electric connection modules is arranged on a side of the switching structure facing the installation opening.

[0012] In an embodiment, the switching structure comprises a mounting plate, a plug-in plate and an ear plate, the mounting plate and the plug-in plate both extend along the horizontal direction, the plug-in plate is mounted on a side of the mounting plate, the plug-in plate is detachably inserted into the installation opening, the ear plate is mounted on a side of the mounting plate away from the plug-in plate, and two of the supports are mounted on a side of the plug-in plate facing the installation opening.

[0013] In an embodiment, the area of the mounting plate is greater than the area of the installation opening, and the area of the plug-in plate is less than the area of the installation opening.

[0014] In an embodiment, the heat insulation structure comprises a heat insulation plate and a sealing ring, the heat insulation plate is mounted on a side of the plug-in plate facing the installation opening, and the sealing ring is arranged around the outer periphery of the heat insulation plate.

[0015] In an embodiment, the heat insulation plate is made of aluminum oxide, silicon nitride or silicon carbide.

[0016] In an embodiment, the heat insulation plate is integrally formed with the plug-in plate.

[0017] In an embodiment, the electric heating wire extends along the horizontal direction and is connected with a power supply wire.

[0018] In an embodiment, the switching structure is provided with a wire hole corresponding to the position of the electric connection module, the support is provided with a first wire slot, the heat insulation structure is provided with a second wire slot, the first wire slot and the second wire slot are both in communication with the wire hole, the power supply wire sequentially passes through the first wire slot and the second wire slot, and is then led out of the wire hole to be electrically connected with the electric connection module.

[0019] In an embodiment, the electric connection module is a male terminal, and the male terminal is electrically connected with the power supply wire.

[0020] In an embodiment, a female terminal adapted to the male terminal is installed in the electrical connection port, and the power supply line is electrically connected to an external power source through the male terminal and the female terminal.

[0021] The technical scheme of the utility model discloses detachably inserts the switching structure in the installation port of the side wall of the forming furnace, not only simplifies the installation process of the electric heating wire, improves the assembly efficiency, and is convenient for the maintenance and replacement of the later period. Two supports are arranged on the switching structure, and the electric heating wire is arranged between the two supports. When the glass ribbon is adhered to the electric heating wire, the damaged electric heating wire can be quickly replaced by pulling out the switching structure from the installation port, the replacement time is shortened, the production efficiency is improved, the blocking phenomenon caused by the slow manual processing speed is avoided, and the continuity and stability of production are ensured. In addition, a heat insulation gap is arranged between the switching structure and the electric heating wire, and a heat insulation structure is arranged in the heat insulation gap. The low thermal conductivity of the heat insulation material effectively blocks the influence of the high temperature of the electric heating wire on the switching structure, prevents the switching structure from deforming or being damaged due to long-term high-temperature environment, improves the service life and reliability of the switching device, and reduces the maintenance cost. At the same time, the switching structure is also provided with an electric connection module corresponding to the electric connection port of the side wall of the forming furnace, and reliable electrical connection between the electric heating wire and the external circuit is realized, and the circuit connection operation of the electric heating wire is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creating labor.

[0023] Figure 1 The structural schematic diagram of an embodiment of the switching device for the electric heating wire of the forming furnace provided by the utility model is shown in the figure.

[0024] Figure 2 The structural schematic diagram of another embodiment of the switching device for the electric heating wire of the forming furnace provided by the utility model is shown in the figure.

[0025] Figure 3 The structural schematic diagram of an embodiment of the installation port provided by the utility model is shown in the figure.

[0026] Figure 4 The structural schematic diagram of an embodiment of the switching structure provided by the utility model is shown in the figure.

[0027] Figure 5 The structural schematic diagram of an embodiment of the heat insulation structure provided by the utility model is shown in the figure.

[0028] BRIEF DESCRIPTION OF DRAWINGS:

[0029] 10, forming furnace; 11, mounting port; 12, electrical connection port;

[0030] 100, switching structure; 101, heat insulation gap; 200, support; 300, electric heating wire; 400, heat insulation structure; 500, electrical connection module; 600, female terminal; 110, mounting plate; 120, plug-in plate; 130, lug plate; 410, heat insulation plate; 420, sealing ring; 510, male terminal.

[0031] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0035] In order to ensure that the glass liquid is cooled according to the viscosity-temperature curve of the glass characteristics, the side wall of the forming channel is usually provided with an electric heating wire. However, in the actual production process, when the glass ribbon formed by the overflow of the glass liquid flows through the forming channel, it may swing due to the stability of the equipment or other reasons, which is easy to cause the glass ribbon to adhere to the electric heating wire on the inner wall of the forming furnace body.

[0036] At present, the industry generally uses the method of manually using tools to extend into the forming channel to solve the problem of glass ribbon adhesion and replace the damaged electric heating wire. However, this processing method is slow and may cause the occurrence of the blocking phenomenon, affecting the production efficiency.

[0037] In order to solve the technical problem, the utility model provides a switching device for electric heating wire of forming furnace.

[0038] Please refer to Figures 1 to 5 In an embodiment of the utility model, the side wall of the forming furnace 10 is provided with a mounting port 11 and two electric connection ports 12, the mounting port 11 extends along the horizontal direction, and the two electric connection ports 12 are respectively arranged at both ends of the mounting port 11 along the extension direction thereof; the switching device for the electric heating wire 300 of the forming furnace 10 includes a switching structure 100, a heat insulation structure 400, two supports 200 and two electric connection modules 500, the switching structure 100 extends along the horizontal direction, and the switching structure 100 is detachably inserted into the mounting port 11; the two supports 200 are arranged at one side of the switching structure 100 facing the mounting port 11, and each support 200 extends out of the mounting port 11 from the switching structure 100 towards the inside of the forming furnace 10; the electric heating wire 300 is arranged between the two supports 200, and the electric heating wire 300 has a heat insulation gap 101 with the switching structure 100; the heat insulation structure 400 is arranged on the switching structure 100 and is accommodated in the heat insulation gap 101; the two electric connection modules 500 are arranged one by one corresponding to the two electric connection ports 12, and each electric connection module 500 is arranged at one side of the switching structure 100 facing the mounting port 11.

[0039] Specifically, the switching device for the electric heating wire 300 of the forming furnace 10 is detachably inserted into the mounting port 11 of the side wall of the forming furnace 10 through the switching structure 100, so that the whole device can be conveniently mounted on the forming furnace 10 and form a detachable connection with the forming furnace 10. Two supports 200 are arranged at intervals on the switching structure 100, and the electric heating wire 300 is arranged between the two supports 200. When the glass ribbon is adhered to the electric heating wire 300, the damaged electric heating wire 300 can be quickly replaced by pulling out the switching structure 100 from the mounting port 11, thereby improving the replacement efficiency and production efficiency and avoiding the blocking phenomenon caused by slow manual processing. Meanwhile, the heat insulation gap 101 is arranged between the switching structure 100 and the electric heating wire 300, and the heat insulation structure 400 is arranged in the heat insulation gap 101, so that the influence of the high temperature of the electric heating wire 300 on the switching structure 100 can be effectively blocked, thereby improving the service life and reliability of the device. In addition, the electric connection module 500 corresponding to the electric connection port 12 of the side wall of the forming furnace 10 is arranged on the switching structure 100, so that the reliable electric connection between the electric heating wire 300 and the external circuit is realized.

[0040] In the technical scheme, the switching structure 100 is detachably inserted into the mounting port 11 of the side wall of the forming furnace 10, so that the mounting process of the electric heating wire 300 is simplified, the assembly efficiency is improved, and the device is convenient to maintain and replace in the later period. Two supports 200 are arranged at intervals on the switching structure 100, and the electric heating wire 300 is arranged between the two supports 200. When the glass ribbon is adhered to the electric heating wire 300, the damaged electric heating wire 300 can be quickly replaced by pulling out the switching structure 100 from the mounting port 11, thereby shortening the replacement time, improving the production efficiency, avoiding the blocking phenomenon caused by slow manual processing, and ensuring the continuity and stability of production. In addition, the heat insulation gap 101 is arranged between the switching structure 100 and the electric heating wire 300, and the heat insulation structure 400 is arranged in the heat insulation gap 101, so that the influence of the high temperature of the electric heating wire 300 on the switching structure 100 is effectively blocked by using the low thermal conductivity of the heat insulation material, the deformation or damage of the switching structure 100 caused by long-term exposure to a high-temperature environment is prevented, the service life and reliability of the switching device are improved, and the maintenance cost is reduced. Meanwhile, the electric connection module 500 corresponding to the electric connection port 12 of the side wall of the forming furnace 10 is arranged on the switching structure 100, so that the reliable electric connection between the electric heating wire 300 and the external circuit is realized, and the circuit connection operation of the electric heating wire 300 is simplified.

[0041] As an optional implementation manner, the heat insulation structure 400 includes a heat insulation plate 410, the heat insulation plate 410 is arranged along the extension direction of the switching structure 100, and one side of the heat insulation plate 410 facing the mounting port 11 is arranged in parallel with the electric heating wire 300, so that the heat insulation plate 410 can cover the whole area of the electric heating wire 300, and the heat insulation plate 410 can maximize the insulation of the heat of the electric heating wire 300 from the switching structure 100, thereby improving the heat insulation effect.

[0042] As another alternative, the switching structure 100 comprises a mounting plate 110 extending in the horizontal direction and detachably inserted into the mounting opening 11. The two supports 200 are fixedly spaced on the side of the mounting plate 110 away from the mounting opening 11. The two electrical connection modules 500 are fixed at the two ends of the mounting plate 110 close to the mounting opening 11, so that the mounting plate 110, the supports 200 and the electrical connection modules 500 form an integral whole, facilitating installation and disassembly.

[0043] Preferably, the mounting plate 110 is made of stainless steel plate, which has sufficient strength and rigidity to bear the heating wire 300 and related components. The supports 200 can be made of high-temperature ceramic or quartz glass, etc. high-temperature insulation materials to withstand the high temperature of the heating wire 300.

[0044] Please continue to refer to Figure 1 and Figure 4 In the embodiment of the present application, the switching structure 100 comprises a mounting plate 110, a plug plate 120 and an ear plate 130. The mounting plate 110 and the plug plate 120 both extend in the horizontal direction. The plug plate 120 is mounted on one side of the mounting plate 110 and is detachably inserted into the mounting opening 11. The ear plate 130 is mounted on the side of the mounting plate 110 away from the plug plate 120. The two supports 200 are mounted on the side of the plug plate 120 facing the mounting opening 11.

[0045] Specifically, by detachably inserting the plug plate 120 into the mounting opening 11, the entire device can be quickly and flexibly installed on or disassembled from the forming furnace 10, simplifying the installation and maintenance process of the heating wire 300. Secondly, by mounting the supports 200 on the side of the plug plate 120 facing the mounting opening 11, the supports 200 can extend into the mounting opening 11 and be located inside the forming furnace 10, so as to arrange the heating wire 300 at a suitable position of the forming channel. Furthermore, the mounting plate 110 and the ear plate 130 not only can enhance the overall strength and stability of the switching structure 100, but also facilitate the installation of other components such as the heat insulation structure 400 and the electrical connection module 500, etc.

[0046] As an alternative, the mounting plate 110 and the plug plate 120 can be made of stainless steel plate, which has sufficient strength and rigidity to bear the heating wire 300 and related components. The ear plate 130 can be integrally formed with the mounting plate 110, or can be fixed on the mounting plate 110 by welding or bolt connection. The supports 200 can be made of high-temperature ceramic or quartz glass, etc. high-temperature insulation materials to withstand the high temperature of the heating wire 300. The supports 200 and the plug plate 120 can be fixed by bonding or bolt connection.

[0047] As another optional embodiment, two electric connection modules 500 are respectively fixed on both ends of the plug-in plate 120 near the installation port 11, and are respectively electrically connected with the plug-in plate 120. When the switching structure 100 is inserted into the installation port 11, the two electric connection modules 500 are correspondingly connected with the two electric connection ports 12 on the side wall of the forming furnace 10, so as to realize reliable electrical connection between the electric heating wire 300 and the external power supply. The electric connection module 500 can adopt common electric connection components such as copper wiring terminals or conductive spring sheets, and is reliably connected with the plug-in plate 120 through bolts, rivets or conductive glue.

[0048] In the embodiment of the utility model, the area of the mounting plate 110 is larger than the area of the installation port 11, and the area of the plug-in plate 120 is smaller than the area of the installation port 11.

[0049] Specifically, the area of the mounting plate 110 is larger than the area of the installation port 11 of the side wall of the forming furnace 10, and the area of the plug-in plate 120 is smaller than the area of the installation port 11. Therefore, the plug-in plate 120 can be easily inserted into the installation port 11 and matched with it, while the mounting plate 110 cannot be inserted into the installation port 11 but is located outside the installation port 11.

[0050] More specifically, the area of the plug-in plate 120 is smaller than the area of the installation port 11, which ensures that the plug-in plate 120 can be smoothly inserted into the installation port 11 and form reliable surface contact with the inner wall of the installation port 11, thereby improving the stability and reliability of the connection between the device and the forming furnace 10. Secondly, the area of the mounting plate 110 is larger than the area of the installation port 11, so that the mounting plate 110 can completely cover the installation port 11 and tightly fit with the outer wall of the forming furnace 10 after the switching device is inserted into place, thereby playing a good sealing and heat insulation role and preventing the heat in the forming furnace 10 from being dissipated from the installation port 11.

[0051] As an optional embodiment, the mounting plate 110 and the plug-in plate 120 can be fixed by welding or bolt connection to form a whole. The mounting plate 110 and the plug-in plate 120 can both be made of stainless steel plate to obtain sufficient strength and rigidity. The area of the mounting plate 110 can be reasonably designed according to the size and shape of the installation port 11 of the forming furnace 10, and only needs to be slightly larger than the installation port 11. The area of the plug-in plate 120 should be comprehensively determined according to the size of the installation port 11, the size of the support 200 and the arrangement requirements of the electric heating wire 300, so as to be able to cooperate with the installation port 11 and provide sufficient installation space for the support 200 and the electric heating wire 300.

[0052] As another alternative, the thickness of the plug plate 120 is less than the depth of the mounting hole 11, so that the plug plate 120 can be fully inserted into the mounting hole 11 and tightly fit with the inner wall of the mounting hole 11. At the same time, the thickness of the mounting plate 110 can be greater than or equal to the thickness of the plug plate 120 to obtain better strength and stability. When the switching device is inserted in place, one side of the mounting plate 110 abuts against the outer wall of the forming furnace 10, forming a solid and reliable support structure.

[0053] Please continue to see Figures 1 to 3 In the embodiment of the present application, the heat insulation structure 400 includes a heat insulation plate 410 and a sealing ring 420, the heat insulation plate 410 is installed on the side of the plug plate 120 facing the mounting hole 11, and the sealing ring 420 is arranged around the outer periphery of the heat insulation plate 410.

[0054] Specifically, the heat insulation structure 400 includes a heat insulation plate 410 and a sealing ring 420. Among them, the heat insulation plate 410 is installed on the side of the plug plate 120 facing the mounting hole 11, and the sealing ring 420 is arranged around the outer periphery of the heat insulation plate 410. So that the heat insulation plate 410 and the sealing ring 420 can be located between the plug plate 120 and the mounting hole 11, and play a good heat insulation and sealing effect.

[0055] More specifically, the heat insulation plate 410 can effectively block the high temperature inside the forming furnace 10 from being transmitted outward, preventing the temperature of the switching device and other parts of the forming furnace 10 from being too high. The heat insulation plate 410 can be made of common high-temperature-resistant heat insulation materials such as ceramic fiber plate and aluminum silicate plate, which have excellent heat insulation performance and high strength. The size and shape of the heat insulation plate 410 can be reasonably designed according to the size of the plug plate 120 and the mounting hole 11 to achieve the best heat insulation effect. The heat insulation plate 410 and the plug plate 120 can be reliably fixed by bonding, bolt connection and other methods.

[0056] The sealing ring 420 is arranged around the outer periphery of the heat insulation plate 410, which can further improve the heat insulation effect and prevent heat leakage from the edge of the heat insulation plate 410, and also can play a sealing role to prevent gas leakage in the forming furnace 10. The sealing ring 420 can be made of high-temperature-resistant and aging-resistant elastic materials such as silicone rubber and fluororubber, which have good sealing performance and long service life. The cross-sectional shape of the sealing ring 420 can be O-shaped, rectangular or other special-shaped, as long as it can cooperate with the heat insulation plate 410 and the mounting hole 11 to achieve reliable sealing.

[0057] As an optional implementation, the heat insulation plate 410 and the sealing ring 420 are both in a rectangular ring shape, which is adapted to the rectangular plug-in plate 120 and the mounting port 11. The rectangular ring-shaped heat insulation plate 410 and the sealing ring 420 are simple to manufacture and convenient to assemble, and can form a good match and sealing with the plug-in plate 120 and the mounting port 11. Meanwhile, chamfers or arc transitions can be arranged at four corners of the heat insulation plate 410 and the sealing ring 420 to reduce stress concentration and improve the reliability and service life of the heat insulation structure 400. The sealing ring 420 can be inlaid in the annular groove of the heat insulation plate 410 in close contact, further improving the sealing performance.

[0058] In the embodiment of the utility model, the heat insulation plate 410 is made of aluminum oxide, silicon nitride or silicon carbide.

[0059] Specifically, the heat insulation plate 410 is made of aluminum oxide. Aluminum oxide is a common high-temperature insulation material with excellent high-temperature resistance, good insulation and high strength, and is widely used in high-temperature equipment. The heat insulation plate 410 made of aluminum oxide can work stably in a high-temperature environment above 1000 DEG C for a long time, and can effectively block the heat transfer from the forming furnace 10 to the outside, thereby protecting the switching device and other parts of the forming furnace 10 from high-temperature damage.

[0060] More specifically, the aluminum oxide heat insulation plate 410 can be prepared by pressing forming, sintering and the like. First, the aluminum oxide powder is mixed uniformly with a binder, and then pressed into the required shape and size in a mold, and after high-temperature sintering, a dense aluminum oxide heat insulation plate 410 is obtained. The obtained heat insulation plate 410 has a uniform microstructure and high density, and can provide stable and reliable heat insulation performance. The thickness of the heat insulation plate 410 can be reasonably selected according to the temperature and heat insulation requirements of the forming furnace 10, and is generally 5mm to 20mm. The heat insulation plate 410 and the plug-in plate 120 can be bonded by high-temperature adhesive, or reliably fixed by mechanical connection methods such as bolts and buckles.

[0061] As an optional implementation, the heat insulation plate 410 is made of silicon nitride material. Silicon nitride is also an excellent high-temperature insulation material with high strength, high hardness, corrosion resistance, impact resistance and the like, and can be used in an environment above 1200 DEG C for a long time. The heat insulation plate 410 made of silicon nitride not only has excellent heat insulation performance, but also has high mechanical strength, which can be reliably fixed on the plug-in plate 120 and withstand certain impact load, and has a longer service life. The preparation process of the silicon nitride heat insulation plate 410 is similar to that of the aluminum oxide heat insulation plate 410, and the heat insulation plate 410 with the required shape and size is obtained through pressing forming and sintering and the like.

[0062] As another optional implementation, the heat insulation plate 410 is made of silicon carbide material. Silicon carbide is another high-temperature heat insulation material with excellent performance, which has ultra-high high-temperature resistance and can be used at a temperature above 1500 DEG C. At the same time, silicon carbide also has excellent heat conduction performance and can quickly and uniformly conduct and diffuse heat. The heat insulation plate 410 made of silicon carbide not only blocks the high temperature in the forming furnace 10 from being transmitted outward, but also quickly conducts and diffuses the heat absorbed by the heat insulation plate 410, further reduces the temperature of the heat insulation plate 410 itself, and improves the heat insulation effect and service life. The silicon carbide heat insulation plate 410 can be prepared by a reaction sintering process, and the heat insulation plate 410 with the required shape and size is directly obtained by the reaction of carbon and silicon at high temperature.

[0063] In the embodiment of the utility model, the heat insulation plate 410 is integrally formed with the plug-in plate 120.

[0064] Specifically, the heat insulation plate 410 and the plug-in plate 120 can be integrally formed by using manufacturing processes such as powder metallurgy and ceramic injection molding. Taking the powder metallurgy process as an example, the heat insulation material powder (such as alumina, silicon nitride, etc.) and the metal powder (such as stainless steel, iron-nickel alloy, etc.) are mixed in a certain proportion, a binder and a lubricant are added to form a mixture, and then the mixture is pressed and formed in a mold to obtain a blank body with the structure of the heat insulation plate 410 and the plug-in plate 120. After subsequent treatments such as debinding and sintering, the heat insulation plate 410 and the plug-in plate 120 integrated component with excellent heat insulation performance and dense structure can be obtained.

[0065] More specifically, the integrally formed heat insulation plate 410 and the plug-in plate 120 are tightly connected without gaps, thereby significantly improving the heat insulation effect. Secondly, the integrally formed heat insulation plate 410 and the plug-in plate 120 reduce the manufacturing and assembly steps, reduce the production cost, and improve the production efficiency.

[0066] As an optional implementation, a certain transition structure such as a chamfer or a curved surface can be designed at the connection between the heat insulation plate 410 and the plug-in plate 120 to reduce thermal stress concentration and improve the reliability of the integrated component. At the same time, the through holes formed in the heat insulation plate 410 and the plug-in plate 120 can also be formed synchronously with the integrated component without the need for further machining, which improves the dimensional accuracy and further simplifies the manufacturing process.

[0067] In the embodiment of the utility model, the electric heating wire 300 extends along the horizontal direction and is connected with a power supply wire.

[0068] In a specific embodiment of the utility model, the electric heating wire 300 extends along the horizontal direction and is connected with a power supply wire. This arrangement of the electric heating wire 300 can effectively solve the problem of uniform heating of the glass ribbon in the forming furnace 10.

[0069] Specifically, the heating wire 300 is connected with an external power supply through a power supply wire to obtain the electric energy required for work.

[0070] More specifically, the heating wire 300 is coiled in a serpentine shape between the two supports 200, increasing the effective length and heated area of the heating wire 300 and improving the heating efficiency and uniformity. A heat insulation gasket is further arranged between the heating wire 300 and the support 200 to reduce heat conduction and prevent the support 200 from overheating.

[0071] In the embodiment of the utility model, the switching structure 100 is provided with a wire hole corresponding to the position of the electric connection module 500, the support 200 is provided with a first wire slot, the heat insulation structure 400 is provided with a second wire slot, the first wire slot and the second wire slot are both in communication with the wire hole, the power supply wire passes through the first wire slot and the second wire slot in sequence, and is then led out from the wire hole to be electrically connected with the electric connection module 500.

[0072] Specifically, the heating wire 300 is connected with an external power supply through a power supply wire to obtain the electric energy required for work. However, when the power supply wire is placed in a high-temperature environment, the insulating layer thereof is prone to aging or even burning out, leading to the risk of electric leakage. Meanwhile, the power supply wire itself also generates heat, aggravating the difficulty of heat insulation. To solve the above problems, the utility model opens a first wire slot on the support 200, a second wire slot on the heat insulation structure 400, and a wire hole on the switching structure 100 corresponding to the position of the electric connection module 500. The power supply wire passes through the first wire slot and the second wire slot in sequence, and is then led out from the wire hole to be electrically connected with the electric connection module 500.

[0073] More specifically, the power supply wire is placed in the wire slot, which can avoid direct contact of the power supply wire with the high-temperature heating wire 300 and the inner wall of the forming furnace 10, reduces the temperature of the insulating layer, and prolongs the service life. Secondly, the wire slot can fix and protect the power supply wire to some extent, preventing it from being abraded or broken during installation and use. Furthermore, the power supply wire is led out from the wire hole on the switching structure 100, so that the electric connection module 500 can be arranged at a safe position away from the high-temperature zone, which facilitates the connection operation and improves the electrical safety.

[0074] As an optional implementation manner, the first wire slot is opened at a position on the side of the support 200 close to the heat insulation plate 410, so that the power supply wire can directly enter the heat insulation structure 400 from the support 200, shortening the wiring length in the high-temperature zone. The second wire slot is opened at a position on the heat insulation plate 410 corresponding to the first wire slot and is in communication with the wire hole, forming a continuous wiring channel. The size of the wire slot should be reasonably designed according to the specifications and number of the power supply wire, which should facilitate the arrangement of the power supply wire and avoid occupying too much volume of the heat insulation material, reducing the heat insulation effect. The inner wall of the wire slot can also be coated with an insulating coating to further improve the insulation performance.

[0075] As another optional embodiment, the wire hole is in a stepped shape, and the hole diameter gradually increases from the end close to the heat insulation plate 410 to the end away from the heat insulation plate 410, which facilitates the arrangement of the power supply wire and forms a sealing structure at the wire hole to reduce the risk of heat leakage from the wire hole. The space between the electric connection module 500 and the wire hole is also filled with a sealing and heat insulation material, such as ceramic fiber cotton, to further improve the sealing and heat insulation performance of the wire hole. The power supply wire can use a special cable with high temperature resistance and high insulation level, such as a fluoroplastic insulated silicone rubber sheath cable, to adapt to harsh high temperature environments.

[0076] Please continue to refer to Figure 4 and Figure 5 In the embodiment of the present application, the electric connection module 500 is a male terminal 510, and the male terminal 510 is electrically connected with the power supply wire.

[0077] Specifically, the connection mode of the male terminal 510 and the power supply wire can be crimping, welding or screw connection, etc., and the factors such as reliability, operation convenience and cost of the connection should be considered comprehensively when selecting. For example, crimping connection is a quick and reliable connection mode, and the power supply wire and the crimping terminal of the male terminal 510 are reliably crimped together by a special crimping tool to form a stable electrical connection. The connection after crimping can also be covered with an insulating sleeve to improve the mechanical strength and insulation performance of the connection. The other end of the male terminal 510 is provided with a standardized connection structure, such as a tab or a threaded terminal, which can be quickly connected with the corresponding connecting piece of the external power supply to realize reliable electrical connection.

[0078] Please continue to refer to Figure 3 In the embodiment of the present application, a female terminal 600 adapted to the male terminal 510 is installed in the electric connection port 12, and the power supply wire is electrically connected with the external power supply through the male terminal 510 and the female terminal 600.

[0079] Specifically, as mentioned before, one end of the power supply wire is electrically connected with the male terminal 510 on the switching device to realize electrical connection with the switching device. The other end of the power supply wire needs to be connected with the external power supply to obtain the required electrical energy for work. To realize reliable and convenient electrical connection, the present application installs a female terminal 600 adapted to the male terminal 510 in the electric connection port 12 of the side wall of the forming furnace 10, and when the switching device is inserted in place, the male terminal 510 and the female terminal 600 form a reliable electrical connection, thereby realizing the electrical connection between the power supply wire and the external power supply.

[0080] More specifically, the female terminal 600 adopts a standardized structure matched with the male terminal 510, such as a jack or a threaded hole, to form a reliable contact connection with the male terminal 510. Preferably, the female terminal 600 adopts an elastic structure, such as a spring or a spring terminal, to generate a certain clamping force when the male terminal 510 is inserted, thereby ensuring the reliability of the contact. In addition, the female terminal 600 and the electrical connection port 12 should have good insulation and sealing performance, and an insulating bushing, a sealing ring 420, or the like can be arranged therebetween to prevent electric leakage and heat leakage. The material selection of the female terminal 600 is similar to that of the male terminal 510, and a high-conductivity material such as copper alloy can be used to make the female terminal 600, and the performance of the female terminal 600 can be improved through surface treatment.

[0081] As an optional embodiment, the female terminal 600 is connected with an external power supply through a wire, and the wire can be selected from a special cable resistant to high temperature and interference, and shielding measures are adopted to adapt to the harsh working environment of the forming furnace 10. The wire and the female terminal 600 can also be connected in a reliable manner such as crimping and welding, and are insulated and fixed through an insulating sleeve and a fixing clamp. The layout path of the wire should be as far away from the high-temperature area and the moving parts as possible, and a metal tube or a corrugated tube is used for physical protection to ensure the safety and reliability of the wire.

[0082] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application is included in the patent protection scope of the present application.

Claims

1. A switching device for a forming furnace heating element, characterized in that, The side wall of the forming furnace is provided with a mounting port and two electric connection ports, the mounting port extends in the horizontal direction, and the two electric connection ports are respectively arranged at the two ends of the mounting port along the extension direction of the mounting port; The switching device for the electric heating wire of the forming furnace comprises: A switching structure extending in the horizontal direction, which is detachably inserted into the mounting port; Two supports, which are arranged on the side of the switching structure facing the mounting port, and each of the supports extends out of the mounting port from the switching structure towards the inside of the forming furnace; the electric heating wire is arranged between the two supports, and there is a heat insulation gap between the electric heating wire and the switching structure; A heat insulation structure arranged on the switching structure and accommodated in the heat insulation gap; Two electric connection modules corresponding to the two electric connection ports, and each of the electric connection modules is arranged on the side of the switching structure facing the mounting port.

2. The switching device for the electrically heated wire of a forming furnace according to claim 1, wherein The switching structure comprises a mounting plate, a plug-in plate and an ear plate, the mounting plate and the plug-in plate both extend in the horizontal direction, the plug-in plate is mounted on one side of the mounting plate, the plug-in plate is detachably inserted into the mounting port, the ear plate is mounted on the side of the mounting plate away from the plug-in plate, and the two supports are mounted on the side of the plug-in plate facing the mounting port.

3. The switching device for the electrically heated wire of a forming furnace according to claim 2, wherein The area of the mounting plate is larger than the area of the mounting port, and the area of the plug-in plate is smaller than the area of the mounting port.

4. The switching device for the electrically heated wire of a forming furnace according to claim 2, wherein The heat insulation structure comprises a heat insulation plate and a sealing ring, the heat insulation plate is mounted on the side of the plug-in plate facing the mounting port, and the sealing ring is arranged around the outer periphery of the heat insulation plate.

5. The switching device for the heating wire of a forming furnace according to claim 4, wherein The heat insulation plate is made of aluminum oxide, silicon nitride or silicon carbide.

6. The switching device for the heating wire of a forming furnace according to claim 4, wherein The heat insulation plate is integrally formed with the plug-in plate.

7. The switching device for the electrically heated wire of a forming furnace according to any one of claims 1 to 6, characterized in that, The electric heating wire extends in the horizontal direction and is connected with a power supply wire.

8. The switching device for the electrically heated wire of a forming furnace according to claim 7, wherein The switching structure is provided with a wire hole corresponding to the position of the electric connection module, the support is provided with a first wire slot, the heat insulation structure is provided with a second wire slot, the first wire slot and the second wire slot are in communication with the wire hole, the power supply wire passes through the first wire slot and the second wire slot in sequence, and is then led out of the wire hole to be electrically connected with the electric connection module.

9. The switching device for the electrically heated wire of a forming furnace according to claim 8, wherein The electric connection module is a male terminal, and the male terminal is electrically connected with the power supply wire.

10. The switching device for the heating wire of a forming furnace according to claim 9, wherein The female terminal adapted to the male terminal is mounted in the electric connection port, and the power supply wire is electrically connected with the external power supply through the male terminal and the female terminal.

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