Discharging system and glass forming equipment
The discharging system adjusts the landing point and falling height of molten glass between rollers to address flow and temperature differences, improving glass product quality by preventing defects like uneven thickness and folding marks.
Patent Information
- Application Number
- CN202310804219.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2024-12-31
AI Technical Summary
The glass production process using tubular drainage or overflow down-draw methods results in uneven thickness and temperature-related defects in glass products due to flow and temperature differences between the forming rollers, leading to issues like uneven thickness, cold ribs, and folding marks.
A discharging system with a discharging assembly, limiting frame, and lifting mechanism adjusts the landing point and falling height of molten glass between calendering rollers, using a displacement mechanism and temperature sensors to ensure uniform flow and temperature distribution.
The system effectively prevents defects such as uneven thickness, cold ribs, and folding marks by ensuring consistent flow and temperature across the rollers, enhancing glass product quality and yield.
Smart Images
Figure CN119219309A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of glass production and manufacturing, and in particular to a discharging system and glass forming equipment. Background Art
[0002] In the known glass production process, the incoming molten glass is conveyed to the forming rollers through a tubular drainage or overflow down-draw method.
[0003] In the tubular drainage method, the glass melt falls too concentratedly to the forming roller, and the glass products after rolling will have uneven thickness defects and "cold rib" defects; while in the overflow down-draw method, the glass melt overflows through both sides of the overflow trough, flows downward evenly along the tapered part of the overflow trough, and merges together at the lower part of the cone. In this process, the glass melt is prone to a large heat exchange with the air, which affects the temperature of the glass melt, and the glass products after rolling will have folding mark defects. Summary of the invention
[0004] The applicant has studied the defects existing in glass products formed by rolling using two conveying methods, tubular drainage or overflow down-drawing, and found that the glass melt transported to the gap between the forming rollers by tubular drainage has a higher flow rate of the glass melt at the landing point than the glass melt flow rate on both sides of the landing point between the rollers. The flow difference will cause uneven thickness defects in the glass products. Since cooling water is supplied inside the forming rollers, the flow difference problem will cause the glass melt on both sides of the landing point between the rollers to contact the forming rollers less than the glass melt at the landing point, causing a lateral temperature difference in the glass melt, and then causing the "cold rib" defect in the rolled glass products. The glass melt transported to the gap between the forming rollers by overflow down-drawing has a temperature difference between its surface temperature and the internal temperature after a large heat exchange occurs when falling. When the glass melt falls into the gap between the rollers, a glass melt material beach with a large temperature difference and alternating mixing will be formed. After rolling, fold marks will eventually form on the glass products, causing quality defects. The quality of glass product molding can be effectively improved by eliminating the flow difference of the molten glass between the forming rollers and the temperature difference between the surface temperature and the internal temperature of the molten glass when it falls between the rollers.
[0005] The object of the present invention is to provide a discharging system and glass forming equipment capable of improving the quality of glass products.
[0006] The present invention is achieved by adopting the following technical solutions.
[0007] A discharging system is used to deliver molten glass to the gap between calendering rollers. The discharging system comprises a discharging assembly, a limiting frame and a lifting mechanism. The discharging assembly is provided with a discharging nozzle, which is arranged above the gap between the rollers. The discharging assembly is slidably connected to the limiting frame to adjust the landing point of the molten glass in the gap between the rollers. The lifting mechanism is transmission-connected to the limiting frame. The lifting mechanism is used to drive the limiting frame to rise or fall so that the discharging nozzle is away from or close to the gap between the rollers.
[0008] Optionally, the limiting frame includes a first crossbeam, a first connecting rod, a second crossbeam and a second connecting rod connected end to end, the discharging assembly is arranged between the first crossbeam and the second crossbeam, and is slidably matched with the first crossbeam and the second crossbeam at the same time, the displacement mechanism is installed on the first connecting rod, and the lifting mechanism is connected to the first connecting rod and the second connecting rod at the same time.
[0009] Optionally, a first pallet and a second pallet are arranged opposite to each other on both sides of the discharge assembly, the first pallet is provided with a first slide groove, the second pallet is provided with a second slide groove, the first cross beam is provided with a first guide rail, the second cross beam is provided with a second guide rail, the first pallet is mounted on the first cross beam, the first guide rail is slidably matched with the first slide groove, the second pallet is mounted on the second cross beam, and the second guide rail is slidably matched with the second slide groove.
[0010] Optionally, the discharging system further comprises a displacement mechanism, which is mounted on the limiting frame and is transmission-connected to the discharging assembly, and is used to drive the discharging assembly to slide relative to the limiting frame along the length direction of the discharging nozzle.
[0011] Optionally, the displacement mechanism includes a driving motor, a screw rod, a nut and a connecting piece. The driving motor is installed on the limit frame and connected to the screw rod. The nut is sleeved outside the screw rod and cooperates with the screw rod thread. One end of the connecting piece is connected to the nut, and the other end is connected to the discharge assembly.
[0012] Optionally, the discharging system also includes a controller, which is electrically connected to the lifting mechanism and the displacement mechanism at the same time. The controller is used to control the movement of the lifting mechanism and the displacement mechanism according to the falling height and landing point corresponding to the different viscosities of the glass melt under different compositions to adjust the position of the discharging nozzle.
[0013] Optionally, the discharging assembly includes multiple first temperature sensors, which are arranged at intervals and are all installed on the outer wall of the discharging nozzle. The multiple first temperature sensors are used to detect the temperature distribution in the length direction of the discharging nozzle. The multiple first temperature sensors are all electrically connected to the controller. The controller is used to control the displacement mechanism according to the temperature difference in the length direction of the discharging nozzle to drive the discharging assembly to slide relative to the limit frame.
[0014] Optionally, the lifting mechanism includes a driving motor, a screw rod, a nut and a connecting piece. The driving motor is connected to the screw rod, the nut is sleeved outside the screw rod and cooperates with the screw rod thread, the nut is connected to the connecting piece, and the connecting piece is connected to the limit frame.
[0015] Optionally, the discharging assembly includes an outer shell, a discharging bin and an insulation layer. The discharging bin is arranged in the outer shell, the insulation layer is arranged between the discharging bin and the outer shell, the outer shell is provided with a clearance opening, the discharging nozzle is arranged at the bottom of the discharging bin, and the discharging nozzle extends into the clearance opening.
[0016] Optionally, the insulation layer includes a first insulation layer and a second insulation layer, and the outer shell, the first insulation layer, the second insulation layer and the discharge bin are arranged in sequence from the outside to the inside, the first insulation layer is made of insulation cotton material, and the second insulation layer is made of aluminum oxide material.
[0017] Optionally, the discharging assembly also includes an insulation brick, which is arranged in the outer shell. The insulation brick is provided with an avoidance groove, which is connected to the make way port. The discharging nozzle is arranged in the avoidance groove, and the insulation brick is used to insulate the discharging nozzle.
[0018] Optionally, the discharge bin includes a bin body and a heating row, the heating row is connected to the bin body, and the heating row is used to be connected to a heat source to achieve heating of the bin body.
[0019] Optionally, the warehouse body is provided with a first arc-shaped flow guide portion and a second arc-shaped flow guide portion opposite to each other, and the distance between the first arc-shaped flow guide portion and the second arc-shaped flow guide portion gradually decreases along the discharging direction of the glass melt.
[0020] Optionally, a first reinforcing rib is provided on a side of the first arc-shaped guide portion away from the second arc-shaped guide portion, and a second reinforcing rib is provided on a side of the second arc-shaped guide portion away from the first arc-shaped guide portion.
[0021] Optionally, the discharging component further includes a plurality of first temperature sensors, which are arranged at intervals and are all installed on the discharging bin, and the plurality of first temperature sensors are used to detect the temperature distribution at different positions of the discharging bin.
[0022] A glass forming device comprises the above-mentioned discharging system, wherein the discharging system comprises a discharging assembly, a limiting frame and a lifting mechanism, wherein the discharging assembly is provided with a discharging nozzle, and the discharging nozzle is arranged above the gap between the two rollers, the discharging assembly is slidably connected to the limiting frame to adjust the landing position of the glass melt in the gap between the two rollers, and the lifting mechanism is transmission-connected to the limiting frame, and the lifting mechanism is used to drive the limiting frame to rise or fall so as to make the discharging nozzle move away from or close to the gap between the two rollers.
[0023] The discharging system and glass forming equipment provided by the present invention have the following beneficial effects:
[0024] The discharging system and glass forming equipment provided by the present invention, due to the use of a displacement mechanism slidably connected to the limit frame and a lifting mechanism transmission connected to the limit frame, can effectively adjust the landing position and falling height of the molten glass, ensure the uniformity of the overall flow and temperature of the molten glass between the calendering rollers, avoid quality defects such as uneven thickness, stripe dividing lines and folding marks in glass products, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 A left side view of the glass forming device provided by an embodiment of the present invention during the rolling process;
[0027] Figure 2 A schematic diagram of the structure of a discharging system provided in an embodiment of the present invention;
[0028] Figure 3 A front view of the glass forming device provided by an embodiment of the present invention during the rolling process;
[0029] Figure 4 A cross-sectional view of a discharging component in a discharging system provided in an embodiment of the present invention;
[0030] Figure 5 A schematic diagram of the structure of a displacement mechanism in a discharging system provided in an embodiment of the present invention;
[0031] Figure 6 for Figure 4 Axonometric view of the center discharge silo;
[0032] Figure 7 for Figure 4 Right view of the middle discharge bin;
[0033] Figure 8 for Figure 4 Schematic diagram of the structure of the middle shell;
[0034] Fig. 9 for Figure 4 Schematic diagram of the structure of medium insulation bricks.
[0035] Icons: 10-glass forming equipment; 100-discharging system; 110-discharging assembly; 111-discharging nozzle; 112-first support plate; 1121-first chute; 113-second support plate; 1131-second chute; 114-housing; 1141-giving port; 1142-first shell; 1143-second shell; 115-discharging bin; 1151-bin; 1152-heating row; 1153-first arc-shaped guide; 1154-second arc-shaped guide; 1155-first reinforcing rib; 1156-second reinforcing rib; 116-insulating layer; 1161-first insulating layer; 1162-second insulating layer temperature layer; 117-insulation brick; 1171-avoidance groove; 118-first temperature sensor; 119-second temperature sensor; 120-limiting frame; 121-first beam; 122-first connecting rod; 123-second beam; 124-second connecting rod; 125-first guide rail; 126-second guide rail; 130-displacement mechanism; 131-driving motor; 132-screw rod; 133-nut; 134-connecting piece; 1341-first extension arm; 1342-connecting rod; 1343-second extension arm; 140-lifting mechanism; 200-calendering rollers; 210-gap between rollers; 300-glass melt. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0039] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.
[0042] Please refer to Figure 1 The embodiment of the present invention provides a glass forming device 10 for producing glass products. The device can effectively adjust the falling point and falling height of the glass melt 300, ensure the uniformity of the overall flow and temperature of the glass melt 300 between the rolling rollers 200, avoid the glass products from having quality defects such as uneven thickness, stripe boundary lines and fold marks, thereby ensuring the quality of the glass products.
[0043] It should be noted that the glass forming device 10 includes a feed channel (not shown), a discharging system 100 and a calendering roller pair 200. The feed channel is used to feed the glass melt 300 into the discharging system 100, and the discharging system 100 is used to feed the glass melt 300 into the gap 210 between the calendering roller pairs 200 to form a material beach in the gap 210. Cooling water circulates inside the calendering roller pairs 200, and the calendering roller pairs 200 are used to roll and cool the glass melt 300 to form a glass product. It should be noted that the glass product can be glass or microcrystalline glass.
[0044] Please refer to Figure 2The discharging system 100 includes a discharging assembly 110, a limiting frame 120 and a lifting mechanism 140. The discharging assembly 110 is connected to a feeding channel, and the feeding channel is used to feed the glass melt 300 into the discharging assembly 110. The discharging assembly 110 is provided with a discharging nozzle 111, and the discharging nozzle 111 is used to discharge the glass melt 300 in a waterfall shape (such as Figure 3 ) is outputted into the gap 210 of the rollers, so that the glass melt 300 forms a material beach in the gap 210 of the rollers. Figure 4 The discharge nozzle 111 is disposed at one end of the discharge component 110 close to the gap 210 between the two rollers and is located above the gap 210 between the two rollers. The discharge nozzle 111 is flat and has a rectangular cross section. In other embodiments, it may be in other shapes, such as a rounded rectangle, an ellipse, etc. The length direction of the discharge nozzle 111 is the same as the horizontal extension direction of the gap 210 between the two rollers. The discharge component 110 is slidably connected to the limit frame 120 along the length direction of the discharge nozzle 111. The limit frame 120 can limit and support the discharge component 110. The discharge component 110 can slide relative to the limit frame 120 to adjust the landing point of the glass melt 300 in the gap 210 between the two rollers, disperse the landing points of the glass melt 300, and avoid the situation where the flow rate of the glass melt 300 at the landing point is high due to the concentration of the landing points, while the flow rate of the glass melt 300 on both sides of the rollers is low. The flow rate of the molten glass 300 in the gap 210 between the rollers is ensured to be consistent, so that the time for the molten glass 300 in the gap 210 between the rollers to flow through the roller gap is the same, and the thickness of the glass product is ensured to be uniform; it can also avoid the contact time between the molten glass 300 on both sides of the roller gap and the rolling roller 200 due to the concentrated landing point being shorter than the contact time between the molten glass 300 at the landing point and the rolling roller 200, thereby ensuring that the cooling time of the molten glass 300 in the gap 210 between the rolling rollers 200 provided with cooling water is the same, thereby ensuring that the molten glass 300 is transversely (i.e. Figure 3 The temperature of the molten glass 300 is evenly distributed along the axial direction of the rolling rollers 200, which prevents the molten glass 300 from forming cold ribs at the junction of the temperature difference, avoids the defect of obvious boundary lines between the two side glasses and the middle glass on the glass product after rolling, and improves the quality of the glass product.
[0045] The lifting mechanism 140 is connected to the limiting frame 120 by transmission. The lifting mechanism 140 is used to drive the limiting frame 120 to rise or fall, so that the discharge nozzle 111 is away from or close to the roller gap 210, thereby adjusting the falling height of the glass melt 300 flowing from the discharge nozzle 111 to the roller gap 210, preventing the glass melt 300 from falling too high, resulting in too long contact time between the glass melt 300 and the air, and causing a temperature difference between the surface temperature and the inside of the glass melt 300, resulting in the glass melt 300 falling into the roller gap 210. Rapid stacking, forming a glass melt material beach with alternating cold and hot, and folding mark defects after rolling. In addition, the staff can adjust the falling height according to the different viscosities of the glass melt 300 composed of different raw materials, ensuring that the temperature change of the glass melt 300 after falling is within the required range, so that the glass melt 300 reaches the most suitable viscosity for molding, and improves the molding quality of glass products.
[0046] In this way, the discharging system 100 can not only adjust the landing point of the glass melt 300, but also adjust the falling height of the glass melt 300 through the lifting mechanism 140, thereby realizing the flexible adjustment of the falling position of the glass melt 300, ensuring the uniformity of the overall flow rate and temperature of the glass melt 300 at the gap 210 between the two rollers, avoiding defects such as uneven thickness, cold ribs and folding marks in glass products, and ensuring product quality.
[0047] Please continue to refer to Figure 2 In one embodiment, it should be noted that in order to realize the automatic control of the discharge assembly 110 sliding relative to the limiting frame 120, the discharge system 100 further includes a displacement mechanism 130. The displacement mechanism 130 is mounted on the limiting frame 120 and is in transmission connection with the discharge assembly 110. The displacement mechanism 130 is used to drive the discharge assembly 110 to slide relative to the limiting frame 120 along the length direction of the discharge nozzle 111, which not only realizes the automatic control, but also ensures the sliding accuracy and sliding stability through mechanical transmission.
[0048] In one embodiment, the limiting frame 120 is a frame-type structure, which includes a first beam 121, a first connecting rod 122, a second beam 123 and a second connecting rod 124 connected end to end, the first beam 121 and the second beam 123 are symmetrically arranged, and the first connecting rod 122 and the second connecting rod 124 are symmetrically arranged. The discharging assembly 110 is arranged between the first beam 121 and the second beam 123, and is slidably matched with the first beam 121 and the second beam 123 at the same time. The discharging assembly 110 can slide relative to the first beam 121 and the second beam 123 at the same time, and the first beam 121 and the second beam 123 work together to guide the discharging assembly 110. The displacement mechanism 130 is installed on the second connecting rod 124, and the second connecting rod 124 is used to support the displacement mechanism 130. The driving end of the displacement mechanism 130 is transmission-connected with the discharging assembly 110 to drive the discharging assembly 110 to slide on the first beam 121 and the second beam 123. The lifting mechanism 140 is connected to the first connecting rod 122 and the second connecting rod 124 at the same time. The lifting mechanism 140 is used to simultaneously drive the first connecting rod 122 and the second connecting rod 124 to rise or fall, so as to drive the entire limiting frame 120 and the discharging assembly 110 to rise or fall, thereby ensuring the stability of the discharging assembly 110 during the lifting process.
[0049] In one embodiment, a first support plate 112 and a second support plate 113 are disposed oppositely on both sides of the discharge assembly 110. The first support plate 112 is provided with a first chute 1121, the second support plate 113 is provided with a second chute 1131, the first crossbeam 121 is provided with a first guide rail 125, the second crossbeam 123 is provided with a second guide rail 126, the first chute 1121, the second chute 1131, the first guide rail 125 and the second guide rail 126 are all extended along the length direction of the discharge nozzle 111. The first support plate 112 is mounted on the first crossbeam 121 through the sliding cooperation between the first guide rail 125 and the first chute 1121, the first crossbeam 121 is used to carry the first support plate 112, and the first guide rail 125 is used to guide and limit the first chute 1121. The second support plate 113 is mounted on the second crossbeam 123 through the sliding cooperation of the second guide rail 126 and the second slide groove 1131. The second crossbeam 123 is used to carry the second support plate 113, and the second guide rail 126 is used to guide and limit the second slide groove 1131. The first guide rail 125 and the second guide rail 126 work together to limit the sliding direction of the first support plate 112 and the second support plate 113, thereby limiting the sliding direction of the entire discharge assembly 110, ensuring that the discharge assembly 110 slides along the length direction of the discharge nozzle 111.
[0050] Please refer to Figure 2 and Figure 5In one embodiment, the displacement mechanism 130 includes a driving motor 131, a screw rod 132, a nut 133 and a connecting piece 134. The driving motor 131 is mounted on the second connecting rod 124 of the limiting frame 120 through the screw rod 132, and the nut 133 is sleeved outside the screw rod 132 and threadedly matched with the screw rod 132. One end of the connecting piece 134 is connected to the nut 133, and the other end is connected to the discharging assembly 110, such as the first support plate 112 and the second support plate 113, or connected to other positions of the discharging assembly 110. Specifically, the axial direction of the screw rod 132 is the length direction of the discharge nozzle 111, and the driving motor 131 is used to drive the screw rod 132 to rotate. The screw rod 132 moves along the length direction of the discharge nozzle 111 under the drive of the driving motor 131, and drives the discharge assembly 110 to move along the axial direction of the screw rod 132 through the nut 133 on the connecting piece 134, so that the discharge assembly 110 moves in the length direction of the discharge nozzle 111, thereby realizing the function of adjusting the landing position of the glass melt 300.
[0051] In one embodiment, the connecting member 134 is arranged in a U shape, and the connecting member 134 includes a first extension arm 1341, a connecting rod 1342, and a second extension arm 1343 which are connected in sequence. The first extension arm 1341 and the second extension arm 1343 are arranged at two ends of the connecting rod 1342 in a relative manner, the first extension arm 1341 is connected and matched with the first support plate 112, the second extension arm 1343 is connected and matched with the second support plate 113, and the middle part of the connecting rod 1342 is connected with the nut 133. The driving motor 131 can drive the connecting rod 1342 to move along the length direction of the discharge nozzle 111 through the cooperation of the screw rod 132 and the nut 133, thereby synchronously driving the first extension arm 1341 and the second extension arm 1343 to move along the length direction of the discharge nozzle 111, and then driving the first support plate 112 and the second support plate 113 to move along the length direction of the discharge nozzle 111, thereby realizing the displacement function of the discharge assembly 110.
[0052] In one embodiment, the displacement mechanism 130 drives the discharging assembly 110 to move through an electric cylinder structure (driven by a driving motor 131 and transmitted by a screw rod 132), but is not limited to this. In other embodiments, the displacement mechanism 130 can also drive the discharging assembly 110 to move through a hydraulic cylinder structure or a cylinder structure, and the type of the displacement mechanism 130 is not specifically limited.
[0053] In one embodiment, the specific structure of the lifting mechanism 140 is the same as the specific structure of the displacement mechanism 130, and will not be described in detail herein. In another embodiment, there are two lifting mechanisms 140, one of which is connected to the first connecting rod 122, and the other is connected to the second connecting rod 124. The two lifting mechanisms 140 move synchronously to smoothly drive the entire limiting frame 120 to rise or fall, thereby driving the discharging assembly 110 to rise or fall.
[0054] In one embodiment, the discharging system 100 further includes a controller (not shown), which is electrically connected to the lifting mechanism 140 and the displacement mechanism 130. The controller is used to control the movement of the lifting mechanism 140 and the displacement mechanism 130 according to the falling height and landing position corresponding to the different viscosities of the glass melt under different compositions, so as to adjust the position of the discharging nozzle 111, so that the falling height of the discharging nozzle 111 reaches a preset reasonable height, and the landing position of the discharging nozzle 111 is at a preset reasonable position, thereby ensuring the uniformity of the feeding temperature of the glass melt 300. Specifically, the controller presets a variety of control parameters of glass material squares, which can be obtained through the summary of production data of stable production in the early stage, and the falling height and landing position corresponding to different viscosities are preset in the controller. When it is necessary to produce glass products corresponding to the glass material square, it can be quickly and automatically adjusted to achieve automatic production and improve production efficiency.
[0055] In one embodiment, please refer to Figure 4 and Figure 6 The discharge assembly 110 includes a housing 114, a discharge bin 115, an insulation layer 116, insulation bricks 117, a plurality of first temperature sensors 118, and a plurality of second temperature sensors 119. The discharge bin 115 is disposed in the housing 114, and the housing 114 is used to shield and protect the discharge bin 115. The insulation layer 116 is disposed between the discharge bin 115 and the housing 114, and the insulation layer 116 is used to achieve the functions of heat insulation and insulation, reduce the heat loss of the glass melt 300 in the discharge bin 115, and prevent the staff from being scalded or electrically shocked, and also support the discharge bin 115 in the housing 114. The first support plate 112 and the second support plate 113 are relatively arranged on both sides of the outer shell 114. The outer shell 114 is provided with a clearance port 1141. The discharge nozzle 111 is arranged at the bottom of the discharge bin 115. The glass melt 300 in the discharge bin 115 can flow downward through the discharge nozzle 111 under the action of gravity. The discharge nozzle 111 extends into the clearance port 1141. The clearance port 1141 is used to make way for the discharge nozzle 111 to avoid affecting the discharge of the glass melt 300.
[0056] Please refer to Figure 8In one embodiment, the housing 114 includes a first shell 1142 and a second shell 1143. The first support plate 112 is disposed on the first shell 1142, and the second support plate 113 is disposed on the second shell 1143. A clearance opening 1141 is formed between the first shell 1142 and the second shell 1143. The first support plate 112 is welded to a side of the first shell 1142 away from the second shell 1143, and the second support plate 113 is welded to a side of the second shell 1143 away from the first shell 1142. The first shell 1142 and the second shell 1143 are detachably connected to facilitate the installation and maintenance of the thermal insulation layer 116. Specifically, the first shell 1142 and the second shell 1143 are both provided with fastening plates, which have long holes for bolts to pass through. The first shell 1142 and the second shell 1143 are assembled together through the matching connection between the fastening plates and the bolts to fasten the relative positions of the first shell 1142 and the second shell 1143; at the same time, the bottom of the first shell 1142 and the second shell 1143 are also provided with long holes for bolts to pass through, so as to ensure that the upper and lower positions of the first shell 1142 and the second shell 1143 can be fastened at the same time.
[0057] It should be noted that after the first shell 1142 and the second shell 1143 are spliced to form the outer shell 114, the outer shell 114 has a cavity in it, the discharge bin 115 is arranged in the cavity, and the gap between the discharge bin 115 and the outer shell 114 ranges from 50 mm to 80 mm, so as to facilitate the provision of the insulation layer 116 in the gap between the discharge bin 115 and the outer shell 114. In one embodiment, the first shell 1142 and the second shell 1143 are both made of metal materials, but are not limited thereto. In other embodiments, the first shell 1142 and the second shell 1143 may also be both made of plastic materials, and the materials of the first shell 1142 and the second shell 1143 are not specifically limited.
[0058] Please refer to Figure 7 In one embodiment, the discharge bin 115 includes a bin body 1151 and two heating bars 1152. The two heating bars 1152 are disposed on opposite sides of the bin body 1151 and are connected to the bin body 1151. The discharge nozzle 111 is disposed at the bottom of the bin body 1151. The heating bars 1152 are used to connect to a heat source to achieve heating of the bin body 1151. Specifically, the heat emitted by the heat source can be transferred to the bin body 1151 through the heating bars 1152, thereby achieving the heating function of the bin body 1151, so that the glass melt 300 in the bin body 1151 is maintained at a certain temperature, and the temperature uniformity of the glass melt 300 is improved.
[0059] In one embodiment, the bin body 1151 is V-shaped, and the V-shaped mouth (discharging nozzle 111) is small and can be easily inserted between the calendering rollers. The bin body 1151 is made of platinum and can be heated to a maximum of 1300 degrees Celsius. The portion of the bin body 1151 extending upward from the bottom with a height of 10 mm to 40 mm is the discharging nozzle 111. The discharging nozzle 111 is thickened with platinum-rhodium material to increase the strength of the discharging nozzle 111, avoid deformation of the discharging nozzle 111, and ensure the consistency of the lateral width of the discharging gap. The height of the discharging nozzle 111 is further selected from 10 mm to 30 mm, 20 mm to 30 mm, 20 mm to 25 mm, 15 mm to 25 mm, 15 mm to 20 mm, etc. The two heating rows 1152 located on both sides of the warehouse body 1151 extend downward to the discharge nozzle 111 at the bottom of the warehouse body 1151, so that the heat of the heating rows 1152 can be transferred to the discharge nozzle 111, thereby realizing the temperature increase function of the discharge nozzle 111. Specifically, the heating rows 1152 are provided with mounting holes, which are used to connect to the heat source. After the heat source is powered on, the heat emitted by it can be transferred to the warehouse body 1151 and the discharge nozzle 111 through the heating rows 1152 at the same time, so as to realize the synchronous temperature increase of the warehouse body 1151 and the discharge nozzle 111.
[0060] In one embodiment, the warehouse body 1151 is relatively provided with a first arc-shaped guide portion 1153 and a second arc-shaped guide portion 1154, and the discharge nozzle 111 is located below the first arc-shaped guide portion 1153 and the second arc-shaped guide portion 1154. The distance between the first arc-shaped guide portion 1153 and the second arc-shaped guide portion 1154 gradually decreases along the discharge direction of the glass melt 300. The glass melt 300 can flow from between the first arc-shaped guide portion 1153 and the second arc-shaped guide portion 1154 to the discharge nozzle 111. The arc-shaped first arc-shaped guide portion 1153 and the second arc-shaped guide portion 1154 can reduce friction resistance, ensure that the glass melt 300 flows downward smoothly, and prevent the glass melt from stagnating in the warehouse body 1151.
[0061] In one embodiment, a first reinforcing rib 1155 is provided on a side of the first arc-shaped guide portion 1153 away from the second arc-shaped guide portion 1154, and the first reinforcing rib 1155 can improve the strength of the first arc-shaped guide portion 1153, prevent the first arc-shaped guide portion 1153 from being deformed, and thus prevent the entire warehouse body 1151 from being deformed. A second reinforcing rib 1156 is provided on a side of the second arc-shaped guide portion 1154 away from the first arc-shaped guide portion 1153, and the second reinforcing rib 1156 can improve the strength of the second arc-shaped guide portion 1154, prevent the second arc-shaped guide portion 1154 from being deformed, and thus further prevent the entire warehouse body 1151 from being deformed.
[0062] Please refer to Figure 4 and Fig. 9In one embodiment, the insulation brick 117 is arranged in the housing 114, and the insulation brick 117 is provided with an avoidance groove 1171, which is connected to the give way port 1141, and the discharge nozzle 111 is arranged through the avoidance groove 1171 and the give way port 1141 in sequence, and the discharge nozzle 111 is arranged in the avoidance groove 1171. The insulation brick 117 is used to insulate the discharge nozzle 111 to prevent the temperature of the glass melt 300 in the discharge nozzle 111 from decreasing. The insulation brick 117 is also used to protect the discharge nozzle 111 to prevent the discharge nozzle 111 from deforming. The deformation of the discharge nozzle 111 will cause uneven flow of the glass melt 300 in the non-flow direction, affect the temperature uniformity of the material beach, and thus affect the molding quality of the product. Specifically, the insulation brick 117 is made of a refractory material with good heat resistance, good shock absorption effect, and low expansion coefficient, such as fused quartz.
[0063] In one embodiment, the insulation layer 116 includes a first insulation layer 1161 and a second insulation layer 1162. The outer shell 114, the first insulation layer 1161, the second insulation layer 1162 and the discharge bin 115 are arranged in sequence from the outside to the inside, the first insulation layer 1161 is made of insulation cotton material, the second insulation layer 1162 is made of aluminum oxide material, and the gap between the discharge bin 115 and the outer shell 114 is completely filled with the first insulation layer 1161 and the second insulation layer 1162. Specifically, the discharge bin 115 is made of platinum material, which is soft at high temperatures. The outside of the discharge bin 115 is first filled with soft alumina ramming material to make it plastic. Then, when the discharge bin 115 is heated, the alumina ramming material can be solidified to have a certain hardness, so as to better protect the discharge bin 115 and prevent it from deformation, and to play a role in heat preservation. A layer of thermal insulation cotton is arranged outside the alumina for heat preservation, so as to further improve the heat preservation effect and reduce the influence of the external environment on the temperature of the discharge bin 115. The thermal insulation cotton has elasticity and can reduce the pressure of the outer shell 114 on the discharge bin 115.
[0064] Specifically, in the process of filling the first thermal insulation layer 1161 and the second thermal insulation layer 1162, alumina powder and pure water are first mixed in a certain proportion, the mass proportion of alumina powder can be 60%-70%, and the mass proportion of pure water can be 30%-40%, to obtain a soft alumina ramming material; then the soft alumina ramming material is filled into the gap between the discharge bin 115 and the outer shell 114 to wrap the discharge bin 115 and expose the discharge nozzle 111. At this time, the soft alumina ramming material does not completely fill the gap between the discharge bin 115 and the outer shell 114; then the alumina ramming material is heated by a heat source to sinter and harden the alumina ramming material at high temperature to form a second thermal insulation layer 1162. At this time, the second thermal insulation layer 1162 has a certain strength, which can prevent the outer shell 114 from being clamped and causing the discharge bin 115 to deform; then the first thermal insulation layer 1161 (thermal insulation cotton) is stuffed into the remaining gap between the discharge bin 115 and the outer shell 114.
[0065] Please continue to refer to Figure 6 It should be noted that the multiple first temperature sensors 118 are arranged at intervals and are all installed on the outer wall of the discharge nozzle 111. The multiple first temperature sensors 118 are used to detect the temperature distribution in the length direction of the discharge nozzle 111. The multiple first temperature sensors 118 are all electrically connected to the controller, and the controller is used to obtain the temperature difference in the length direction of the discharge nozzle 111 according to the temperature distribution in the length direction of the discharge nozzle 111, so as to control the displacement mechanism 130 to drive the discharge assembly 110 to slide relative to the limit frame 120 along the length direction of the discharge nozzle 111, so as to adjust the landing point position of the glass melt 300 in the gap 210 between the rollers, change the flow rate of the glass melt 300 between the rolling rollers 200, and thus improve the uniformity of the temperature of the glass melt 300.
[0066] In one embodiment, a plurality of second temperature sensors 119 are arranged at intervals and are all installed on the discharge bin 115 . The plurality of second temperature sensors 119 are used to detect the temperature distribution at different positions of the discharge bin 115 and are used for monitoring the temperature rise of the bin 115 by the heating row 1152 .
[0067] In the discharging system 100 provided by the embodiment of the present invention, the discharging assembly 110 is slidably connected with the limit frame 120 to drive the discharging nozzle 111 to move, so as to adjust the landing position of the glass melt 300 in the gap 210 of the rollers, and the lifting mechanism 140 is transmission-connected with the limit frame 120, and the lifting mechanism 140 is used to drive the limit frame 120 to rise or fall, so as to make the discharging nozzle 111 away from or close to the gap 210 of the rollers. Compared with the prior art, the discharging system 100 provided by the present invention adopts the displacement mechanism 130 transmission-connected with the discharging assembly 110 and the lifting mechanism 140 transmission-connected with the limit frame 120, so that the landing position and the falling height of the glass melt 300 can be effectively adjusted, so as to ensure the uniformity of the overall flow rate and temperature of the glass melt 300 in the gap 210 of the rollers, avoid the glass products from having quality defects such as uneven thickness, stripe boundary lines and folding marks, so as to ensure the product quality. The glass forming equipment 10 has good product quality and high yield rate.
[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A discharging system for delivering molten glass to the gap between rolling rollers, characterized in that: The discharging system includes a discharging component, a limiting frame and a lifting mechanism. The discharging component is provided with a discharging nozzle, and the discharging nozzle is arranged above the gap between the two rollers. The discharging component is slidably connected to the limiting frame to adjust the landing position of the glass melt in the gap between the two rollers. The lifting mechanism is transmission-connected to the limiting frame, and the lifting mechanism is used to drive the limiting frame to rise or fall so as to make the discharging nozzle move away from or approach the gap between the two rollers.
2. The discharging system according to claim 1, characterized in that: The limiting frame includes a first crossbeam, a first connecting rod, a second crossbeam and a second connecting rod connected end to end. The discharging assembly is arranged between the first crossbeam and the second crossbeam, and is slidably matched with the first crossbeam and the second crossbeam at the same time. The displacement mechanism is installed on the first connecting rod, and the lifting mechanism is connected to the first connecting rod and the second connecting rod at the same time.
3. The discharging system according to claim 2, characterized in that: A first pallet and a second pallet are arranged opposite to each other on both sides of the discharging assembly, the first pallet is provided with a first slide groove, the second pallet is provided with a second slide groove, the first crossbeam is provided with a first guide rail, the second crossbeam is provided with a second guide rail, the first pallet is mounted on the first crossbeam, the first guide rail is slidably matched with the first slide groove, the second pallet is mounted on the second crossbeam, and the second guide rail is slidably matched with the second slide groove.
4. The discharging system according to claim 1, characterized in that: The discharging system further comprises a displacement mechanism, which is mounted on the limiting frame and is transmission-connected to the discharging assembly, and is used for driving the discharging assembly to slide relative to the limiting frame along the length direction of the discharging nozzle.
5. The discharging system according to claim 4, characterized in that: The displacement mechanism includes a driving motor, a screw rod, a nut and a connecting piece. The driving motor is installed on the limiting frame and connected to the screw rod. The nut is sleeved outside the screw rod and cooperates with the screw rod thread. One end of the connecting piece is connected to the nut, and the other end is connected to the discharging assembly.
6. The discharging system according to claim 4, characterized in that: The discharging system also includes a controller, which is electrically connected to the lifting mechanism and the displacement mechanism at the same time. The controller is used to control the movement of the lifting mechanism and the displacement mechanism according to the falling height and landing point corresponding to the different viscosities of the glass melt under different compositions, so as to adjust the position of the discharging nozzle.
7. The discharging system according to claim 6, characterized in that: The discharging assembly includes a plurality of first temperature sensors, which are arranged at intervals and are all installed on the outer wall of the discharging nozzle. The plurality of first temperature sensors are used to detect the temperature distribution in the length direction of the discharging nozzle. The plurality of first temperature sensors are electrically connected to the controller, and the controller is used to control the displacement mechanism to drive the discharging assembly to slide relative to the limit frame according to the temperature difference in the length direction of the discharging nozzle.
8. The discharging system according to claim 1, characterized in that: The lifting mechanism includes a driving motor, a screw rod, a nut and a connecting piece. The driving motor is connected to the screw rod. The nut is sleeved outside the screw rod and cooperates with the screw rod thread. The nut is connected to the connecting piece, and the connecting piece is connected to the limiting frame.
9. The discharging system according to claim 1, characterized in that: The discharging assembly includes an outer shell, a discharging bin and an insulation layer, the discharging bin is arranged in the outer shell, the insulation layer is arranged between the discharging bin and the outer shell, the outer shell is provided with a clearance opening, the discharging nozzle is arranged at the bottom of the discharging bin, and the discharging nozzle extends into the clearance opening.
10. The discharging system according to claim 9, characterized in that: The insulation layer includes a first insulation layer and a second insulation layer. The outer shell, the first insulation layer, the second insulation layer and the discharge bin are arranged in sequence from the outside to the inside. The first insulation layer is made of insulation cotton material, and the second insulation layer is made of aluminum oxide material.
11. The discharging system according to claim 9, characterized in that: The discharging assembly also includes an insulation brick, which is arranged in the shell. The insulation brick is provided with an avoidance groove, which is connected to the give way port. The discharging nozzle is arranged in the avoidance groove, and the insulation brick is used to insulate the discharging nozzle.
12. The discharging system according to claim 9, characterized in that: The discharge bin includes a bin body and a heating row, wherein the heating row is connected to the bin body and is used to be connected to a heat source to achieve heating of the bin body.
13. The discharging system according to claim 12, characterized in that: The warehouse body is provided with a first arc-shaped flow guide portion and a second arc-shaped flow guide portion opposite to each other, and the distance between the first arc-shaped flow guide portion and the second arc-shaped flow guide portion gradually decreases along the discharging direction of the glass melt.
14. The discharging system according to claim 13, characterized in that: A first reinforcing rib is disposed on a side of the first arc-shaped flow guide portion away from the second arc-shaped flow guide portion, and a second reinforcing rib is disposed on a side of the second arc-shaped flow guide portion away from the first arc-shaped flow guide portion.
15. A glass forming device, characterized in that: Comprising a discharging system as described in any one of claims 1 to 14.