A glass furnace full-oxygen combustion melting system and a control method thereof

Abstract

The application is suitable for the technical field of glass kiln system, and provides a glass kiln full-oxygen combustion melting system and a control method thereof.The system comprises a full-oxygen kiln unit for melting glass raw materials, a material conveying unit for conveying glass liquid, and a forming station assembly for glass forming.The forming station assembly comprises a blank forming unit, a linking forming unit and a product forming unit connected in sequence.The blank forming unit, the linking forming unit and the product forming unit are installed on a base platform.The blank forming unit comprises a first blow molding table, a preliminary mold mechanism, a material receiving mechanism and a first gas grabbing mechanism arranged on the base platform.The full-oxygen combustion technology is used to replace the traditional air combustion mode, the full-oxygen kiln unit uses pure oxygen as a combustion medium, and the heat efficiency of the kiln is improved.The bottle mouth part is clamped by the bottom mold mechanism, and is turned over to the product forming unit as a whole by a turning mechanism, so that a separate bottle clamping mechanism is not needed for secondary clamping.

Description

Technical Field

[0001] This invention relates to the field of glass furnace system technology, and more specifically, to a glass furnace all-oxygen combustion melting system and its control method. Background Technology

[0002] Glass bottles, as rigid packaging containers widely used in food, pharmaceuticals, and daily chemicals, possess advantages such as good chemical stability, strong barrier properties, and recyclability, leading to a continuously expanding market demand. Their industrial production typically involves core processes including glass raw material melting, quantitative feeding of molten glass, initial shaping of the blank, and final shaping of the finished product. The energy efficiency of the melting furnace and the efficiency of the forming stations directly determine the energy consumption, capacity, and product quality of the entire production line.

[0003] Traditional glass production lines generally use air-fired furnaces for melting raw materials. Since approximately 78% of the nitrogen in the air does not participate in the combustion reaction, it not only carries a large amount of heat with it in the flue gas, resulting in low furnace thermal efficiency and high fuel consumption, but also generates large amounts of nitrogen oxide pollutants under high-temperature conditions. This leads to high flue gas treatment costs and makes it difficult to meet current low-carbon and environmentally friendly production requirements. Oxygen-based combustion technology, which uses pure oxygen instead of air as the combustion medium, can significantly improve flame temperature and thermal efficiency, reduce fuel consumption and pollutant emissions, and has become an important direction for the technological upgrading of glass melting furnaces.

[0004] However, most existing glass bottle forming equipment is designed based on the capacity and process parameters of traditional air-assisted melting furnaces. When used in conjunction with all-oxygen furnaces, there is a significant lack of compatibility, and the capacity advantage of all-oxygen combustion cannot be fully released.

[0005] Existing bottle-making equipment has its bottom mold fixedly installed below the initial mold station, possessing only the single function of forming the glass bottle neck. After the initial forming of the preform is completed, an independent clamping mechanism is required to hold the preform and transfer it from the initial mold station to the forming mold station. This transfer mode increases the number of process steps, and the preform is exposed to air for a long time, resulting in a large temperature drop during transfer. This can easily cause local hardening of the glass preform, a decrease in forming ductility, and quality problems such as uneven bottle wall thickness and numerous forming defects. On the other hand, the secondary clamping of the clamping mechanism can easily cause bottle neck deformation and positioning deviation, affecting the forming accuracy of the bottle neck and the consistency of product batches. This paper proposes a glass furnace all-oxygen combustion melting system and its control method to improve the existing problems. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a glass furnace all-oxygen combustion melting system and its control method.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An oxygen-fired glass furnace melting system includes an oxygen-fired furnace unit for melting glass raw materials, a material conveying unit for conveying molten glass, and a forming station assembly for glass forming.

[0008] The molding station assembly includes a blank molding unit, a connecting molding unit, and a product molding unit connected in sequence, and the blank molding unit, the connecting molding unit, and the product molding unit are installed on the base platform.

[0009] The blank forming unit includes a first blow molding table, a primary mold mechanism, a receiving mechanism, and a first air-puffing mechanism, all mounted on a base platform.

[0010] The connecting molding unit includes a flipping mechanism, a bottom mold mechanism, and a mounting platform for fixing the flipping mechanism. The bottom mold mechanism is located below the initial mold mechanism and is used to mold the bottle mouth part of the glass bottle. The flipping mechanism is used to drive the bottom mold mechanism and the blank held by the bottom mold mechanism to flip to the product molding unit.

[0011] The product molding unit includes a second blow molding table, a molding mechanism disposed on the second blow molding table, and a second air-puffing mechanism.

[0012] The material conveying unit is used to transport the molten glass output from the oxygen furnace unit to the receiving mechanism of the blank forming unit. The blank forming unit is used to work with the bottom mold mechanism to blow the molten glass into blanks. The product forming unit is used to blow the transferred blanks into final products.

[0013] The present invention is further configured such that: the initial mold mechanism is a split mold structure, which can be opened and closed in the horizontal direction. In the closed state, the initial mold mechanism and the bottom mold mechanism are sealed and connected, together forming the initial mold cavity of the glass preform.

[0014] The initial mold mechanism includes a mounting frame, an initial mold clamping component, and two sets of initial molds. The mounting frame is fixedly installed on the top of the base platform, and the initial mold clamping component is fixedly assembled on the mounting frame.

[0015] Each set of the initial mold consists of two initial mold halves, which are respectively installed on the two claw ends of the initial mold clamping member.

[0016] When the initial mold clamping component drives the two clamping jaws to open and close, it causes the two initial mold halves to align or separate in the horizontal direction. In the closed state, the two initial mold halves surround and form the initial mold cavity of the glass preform bottle body.

[0017] The present invention is further configured such that: the receiving mechanism is rotatably and vertically mounted on the first blow molding table, for receiving glass droplets conveyed by the conveying unit and guiding them into the initial mold cavity.

[0018] The receiving mechanism includes a first lifting and rotating drive and a receiving funnel fixedly connected to the first lifting and rotating drive. The first lifting and rotating drive can drive the receiving funnel to rotate and lift directly above the initial mold mechanism.

[0019] The present invention is further configured such that: the first air-blowing mechanism is rotatably and vertically disposed directly above the primary mold mechanism, and is used to introduce compressed gas into the primary mold cavity to complete the air-blowing of the blank.

[0020] The first air-blowing mechanism includes a second lifting and rotating drive component and a first air-blowing head fixedly connected to the second lifting and rotating drive component. The second lifting and rotating drive component can drive the first air-blowing head to rotate and rise directly above the initial mold mechanism.

[0021] The present invention is further configured such that the flipping angle of the flipping mechanism is °, and after flipping, the bottom mold mechanism drives the bottle mouth end of the blank to extend into the molding station of the product molding unit with the bottle body end facing down.

[0022] The present invention is further configured such that the flipping mechanism includes a flipping motor, a mounting base, and a placement rack.

[0023] The flip motor is mounted on the top of the mounting platform via a fixing bracket, and its output shaft is set in the horizontal direction.

[0024] One end of the mounting base is fixedly connected to the output shaft of the flipping motor, and the other end is rotatably connected to the placement frame via a rotating shaft. The placement frame is fixed on the mounting platform, providing rotational support for the mounting base.

[0025] The flip motor can drive the mounting base to rotate back and forth around the horizontal axis, realizing the switching of the bottom mold mechanism between the blank forming unit and the product forming unit.

[0026] The present invention is further configured such that: the bottom mold mechanism includes a bottom mold clamping member and two sets of bottom molds; the bottom mold clamping member is mounted on a mounting base and is fixedly mounted on the mounting base, rotating synchronously with the mounting base; each set of bottom molds consists of two bottom mold halves, which are respectively mounted on the two gripper ends of the bottom mold clamping member.

[0027] In the initial molding stage, the mounting base is in a horizontal position, the bottom mold is directly opposite the bottom opening of the initial mold, the bottom mold clamping component drives the bottom mold half to close, and seals and connects with the bottom of the initial mold. The two bottom mold half surrounds to form the bottom mold cavity of the glass bottle mouth. The bottom mold cavity and the initial mold cavity together constitute a complete initial molding cavity.

[0028] The invention is further configured such that: the top surface of the mounting platform is provided with an upward-opening clearance groove, the extension direction of the clearance groove is parallel to the output shaft axis of the flipping motor, and the position of the groove corresponds to the flipping trajectory of the mounting base and the bottom mold mechanism.

[0029] The invention is further configured such that: the molding mechanism is a split-type finished product mold, which, after being closed, forms the final mold cavity of the finished glass bottle. The second air-blowing mechanism is vertically and vertically disposed above the molding mechanism, and is used to introduce blowing gas into the blank to complete the final molding.

[0030] The molding mechanism includes a molding clamping component and two sets of molding molds. The molding clamping component is installed on the second blow molding platform. Each set of molding molds consists of two molding half molds, which are respectively installed on the two claw ends of the molding clamping component.

[0031] When the clamping jaws of the molding clamping component open and close, they drive the two molding half molds to align or separate in the horizontal direction. In the closed state, the two molding half molds enclose and form a final mold cavity that is consistent with the outer contour of the finished glass bottle.

[0032] The second air-blowing mechanism includes a third lifting and rotating drive component and a second air-blowing head fixedly connected to the third lifting and rotating drive component. The second air-blowing head can be moved to the top of the molding mechanism under the drive of the third lifting and rotating drive component.

[0033] A control method for an oxy-fuel combustion melting system in a glass furnace, using the aforementioned oxy-fuel combustion melting system, includes the following steps: S1. The glass raw materials are melted and clarified to form molten glass through the oxygen-filled furnace unit, and the molten glass is quantitatively transported to the receiving station of the blank forming unit through the material conveying unit.

[0034] S2. The receiving mechanism introduces the molten glass into the molded initial mold mechanism in the mold-closing state. The bottom mold mechanism and the bottom of the initial mold mechanism are sealed and connected to form the initial mold cavity. The first air-blowing mechanism introduces blowing gas into the initial mold cavity, so that the molten glass is formed into a glass preform with a bottle nozzle structure. The bottle nozzle part is formed in the bottom mold mechanism.

[0035] S3. The initial mold mechanism opens and releases the preform bottle body. The flipping mechanism drives the bottom mold mechanism and the clamped glass preform to flip, transferring the glass preform to the second blow molding stage of the product forming unit.

[0036] S4. The molding mechanism closes the mold to form the final mold cavity. The second gas blowing mechanism introduces blowing gas into the blank, causing the glass blank to extend and fit the inner wall of the final mold cavity. After shaping, the finished glass bottle is obtained.

[0037] In summary, this application includes at least one of the following beneficial technical effects: (1) By adopting full oxygen combustion technology to replace the traditional air-assisted combustion method, the full oxygen kiln unit uses pure oxygen as the combustion medium, which improves the thermal efficiency of the kiln and reduces fuel consumption.

[0038] (2) Through the bottom mold mechanism and the flipping mechanism, the bottom mold has the dual functions of bottle mouth forming and preform clamping and transfer. After the glass preform is initially formed, the bottle mouth part is directly clamped by the bottom mold mechanism and flipped to the product forming unit by the flipping mechanism. There is no need to set up a separate clamping mechanism for secondary clamping, which shortens the exposure time of the preform in the air and reduces the temperature drop during transfer. On the other hand, it reduces the risk of deformation and positioning deviation caused by secondary clamping of the bottle mouth.

[0039] (3) The bottom mold mechanism is flipped directly from below the initial mold station to the forming station by the flipping mechanism, realizing the connection of the blank from the initial forming to the final forming. The connection of the forming station makes the production line cycle time adaptable to the glass liquid output of the full oxygen furnace. In addition, the initial mold mechanism adopts a split horizontal opening and closing mold structure, and the bottom mold mechanism flips 180° with the flipping mechanism. The clearance groove opened on the top surface of the mounting platform provides clearance space for the bottom mold mechanism to flip, further improving the operating efficiency of the whole line.

[0040] (4) The final molding stage of the product adopts a graded pressure blowing process. Low-pressure gas is first introduced through the second air blowing head to make the middle of the blank expand evenly and initially extend. Then, high-pressure gas is switched to make the glass blank completely fit the inner wall of the final mold cavity, reducing the possibility of uneven force on the blank and inconsistent wall thickness distribution caused by instantaneous high pressure impact, and improving the stability of product quality. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of an oxygen-fired melting system for a glass furnace according to the present invention.

[0042] Figure 2 This is a system structure block diagram of the present invention.

[0043] Figure 3 This is a schematic diagram of the state of the molding station component in this invention when it is not ventilated.

[0044] Figure 4 for Figure 2 Top view.

[0045] Figure 5 This is a schematic diagram of the initial mold mechanism in this invention.

[0046] Figure 6 This is a schematic diagram of the connecting molding unit in this invention.

[0047] Figure 7 This is a schematic diagram of the state of the blank forming in this invention.

[0048] Figure 8 This is a schematic diagram of the product forming state in this invention.

[0049] Explanation of reference numerals in the attached drawings: 1. Blank forming unit; 11. First blow molding table; 12. Preliminary mold mechanism; 121. Mounting frame; 122. Preliminary mold clamping component; 123. Preliminary mold; 13. Receiving mechanism; 131. First lifting and rotating drive component; 132. Receiving funnel; 14. First air-puffing mechanism; 141. Second lifting and rotating drive component; 142. First air-puffing head; 2. Connecting molding unit; 21. Tilting mechanism; 211. Tilting motor; 212. Mounting base; 213. Placement rack; 22. Bottom mold mechanism; 221. Bottom mold clamping component; 222. Bottom mold; 23. Mounting platform; 231. Clearance groove; 3. Product molding unit; 31. Second blow molding table; 32. Molding mechanism; 321. Molding clamping component; 322. Molding mold; 33. Second air-blowing mechanism; 331. Third lifting and rotating drive component; 332. Second air-blowing head. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0052] Please see Figures 1-8 Example 1, see Figure 1 and Figure 2 A glass furnace oxy-fuel combustion melting system is mainly composed of an oxy-fuel furnace unit, a material conveying unit, a blank forming unit 1, a connecting forming unit 2, and a product forming unit 3 connected in sequence, realizing the production of glass raw materials from melting and quantitative feeding to the initial forming of blanks and the final forming of finished products.

[0053] The all-oxygen furnace unit uses pure oxygen as the combustion medium and natural gas as fuel. The furnace is equipped with a melting pool, a clarifying pool and a homogenizing pool in sequence. It can heat glass batch materials such as silica sand, soda ash and limestone to 1550~1600℃ to complete melting, clarification and homogenization, and output homogeneous glass liquid that meets the forming temperature requirements.

[0054] The material conveying unit includes a feeding channel and a feeding machine. The feeding end of the feeding channel is connected to the discharge port of the all-oxygen furnace unit. An electric heating structure is installed inside the channel to maintain the forming temperature of the glass melt. The feeding machine is located at the discharge end of the feeding channel and uses a shearing mechanism to quantitatively shear the glass melt into droplets of uniform weight, which are then transported to the receiving station of the blank forming unit 1 through a guide trough.

[0055] In order to adapt to the production capacity advantage of releasing full oxygen combustion in the full oxygen kiln unit, the forming station component was designed, which includes blank forming unit 1, connecting forming unit 2 and product forming unit 3.

[0056] See Figure 1 and Figure 2 The specific structure of the blank forming unit 1 is as follows: The blank forming unit 1 includes a first blow molding table 11, a primary mold mechanism 12, a receiving mechanism 13, and a first air-puffing mechanism 14.

[0057] The first blow molding table 11 is installed on the base platform 4, and the table surface of the first blow molding table 11 serves as the installation base for the initial molding station.

[0058] See Figure 3 and Figure 5 The initial mold mechanism 12 is a split mold structure that can open and close horizontally. Specifically, it includes a mounting frame 121, an initial mold clamping component 122, and two sets of initial molds 123. The mounting frame 121 is fixedly mounted on the top surface of the base platform 4, and the initial mold clamping component 122 is fixedly assembled on the mounting frame 121. Each set of initial molds 123 consists of two initial mold halves, which are respectively mounted on the two gripper ends of the initial mold clamping component 122. When the initial mold clamping component 122 drives the two grippers to open and close, it causes the two initial mold halves to align or separate horizontally. In the closed state, the two initial mold halves enclose and form the initial mold cavity of the glass preform bottle body.

[0059] See Figure 3 and Figure 4 The receiving mechanism 13 is located on one side of the initial mold mechanism 12 and includes a first lifting and rotating drive component 131 and a receiving funnel 132.

[0060] The first lifting and rotating drive component 131 is set corresponding to the receiving mechanism 13. Its cylinder body is vertically fixed to the base platform 4 via a base. The cylinder body is a stationary fixed component and does not generate displacement. The output end of the drive component is set upward, and a transition flange is fixedly connected to the end of the output end. A horizontally extending first cantilever is connected to the transition flange, and a receiving funnel structure is installed at the end of the first cantilever. The output end of the drive component can reciprocate around its own vertical axis, and can also extend and retract vertically along its own axis, thereby driving the first cantilever and the end receiving funnel 132 to complete the horizontal swing and vertical lifting actions.

[0061] In standby mode, the output end of the first lifting and rotating drive component 131 is in a rising and retracting state, causing the receiving funnel 132 to stop at the side and above the initial mold mechanism 12 to avoid interference with the actions of other workstations.

[0062] During the receiving operation, the drive unit first drives the first cantilever to rotate horizontally, so that the receiving funnel moves to the top of the cavity of the initial mold 123 and is aligned coaxially; then the output end moves down slightly, so that the lower end of the receiving funnel is close to the upper opening of the initial mold cavity, receives the glass droplets falling from the conveying unit and guides them into the initial mold cavity.

[0063] After receiving the material, the output end of the drive component first raises the receiving funnel 132 vertically upwards, so that it is removed from the top surface of the initial mold mechanism, and then rotates horizontally in the opposite direction back to the side clearance position, making room for the operation of the first air-puffing mechanism 14.

[0064] See Figure 3 The first air-puffing mechanism 14 is rotatably and vertically mounted on the base platform 4. The second lifting and rotating drive component 141 is positioned corresponding to the first air-puffing mechanism 14, with its cylinder body vertically fixed to the base platform 4 via a base. The first air-puffing mechanism 14 and the receiving mechanism 13 are located on opposite sides of the initial mold mechanism 12 to avoid motion interference. The drive component cylinder body is a stationary fixed component with its output end facing upwards. The output end is fixedly connected to a transition flange and to a horizontally extending second cantilever. The end of the second cantilever is vertically fixedly mounted with the first air-puffing head 142. The first air-puffing head 142 has an axial air passage inside, and its top end is connected to an external compressed air source via a flexible air pipe. The output end of the drive component can synchronously or independently complete the rotation around the vertical axis and the lifting and lowering motion along the vertical direction, driving the first air-puffing head 142 to achieve station switching and sealing and tightening.

[0065] In standby mode, the output end of the second lifting and rotating drive component 141 is in a rising and retracting state, which drives the first air-puffing head 142 to stay above the side of the initial mold mechanism 12, providing operating space for the material receiving mechanism 13 to operate and for the mold to open and close.

[0066] During the air-blowing operation, after the receiving mechanism 13 exits the initial mold station, the driving component drives the second cantilever to rotate horizontally, so that the first air-blowing head 142 is coaxially aligned with the cavity of the initial mold 123; then the output end moves vertically downward, pressing the lower sealing surface of the first air-blowing head 142 against the top surface of the initial mold 123, so that a sealed blowing space is formed inside the cavity.

[0067] An external air source introduces compressed air at a set pressure into the initial mold cavity through the first air-blowing head 142, causing the glass droplets to extend along the inner wall of the cavity, thus completing the initial blowing of the glass preform.

[0068] After the air is released, the output end of the drive component moves vertically upward, causing the first air release head 142 to detach from the initial mold 123, and then rotates horizontally in the opposite direction to the side standby position to make way for the subsequent initial mold opening and blank flipping actions.

[0069] See Figure 6 The specific structure of the connecting molding unit 2 is as follows: The connecting molding unit 2 includes a flipping mechanism 21, a bottom mold mechanism 22, and a mounting platform 23 for fixing the flipping mechanism 21. The mounting platform 23 is fixedly set on the base platform between the first blow molding table 11 and the product molding unit 3, providing mounting support for the flipping mechanism 21.

[0070] The flipping mechanism 21 includes a flipping motor 211, a mounting base 212, and a placement frame 213. The flipping motor 211 is mounted on the top of the mounting platform 23 via a fixed frame, and its output shaft is arranged horizontally. One end of the mounting base 212 is fixedly connected to the output shaft of the flipping motor 211, and the other end is rotatably connected to the placement frame 213 via a rotating shaft. The placement frame 213 is fixed on the mounting platform 23, providing rotational support for the mounting base 212. The flipping motor 211 can drive the mounting base 212 to reciprocate 180° around the horizontal rotating shaft, realizing the switching of the bottom mold mechanism 22 between the initial forming station and the final forming station.

[0071] See Figure 3 The bottom mold mechanism 22 is located below the initial mold mechanism 12 and is used to form the bottle mouth part of the glass bottle, while also undertaking the function of clamping and transferring the blank; it includes a bottom mold clamping component 221 and two sets of bottom molds 222. The bottom mold clamping component 221 is fixedly installed on the mounting base 212 and rotates synchronously with the mounting base 212; each set of bottom molds 222 consists of two bottom mold halves, which are respectively installed on the two gripper ends of the bottom mold clamping component 221.

[0072] See Figure 7 In the initial molding stage, the mounting base 212 is in a horizontal position, and the bottom mold 222 is directly opposite the bottom opening of the initial mold 123. The bottom mold clamping component 221 drives the bottom mold half to close, sealing and connecting with the bottom of the initial mold 123. The two bottom mold half enclose to form the bottom mold cavity of the glass bottle nozzle. The bottom mold cavity and the initial mold cavity together constitute a complete initial molding cavity. After the glass preform is formed, the bottle nozzle is fitted into the bottom mold cavity and stably clamped by the bottom mold 222.

[0073] The top surface of the mounting platform 23 has an upward-opening clearance groove 231. The extension direction of the clearance groove 231 is parallel to the output shaft axis of the flipping motor 211, and the position of the groove corresponds to the flipping trajectory of the mounting base 212 and the bottom mold mechanism 22. The depth of the clearance groove 231 is greater than the maximum rotation radius of the bottom mold mechanism when it flips with the mounting base 212. When the flipping motor 211 drives the mounting base 212 to rotate 180°, the clearance groove 231 provides clearance space for the bottom mold clamping member 221 and the bottom mold 222, ensuring that there is no structural interference throughout the flipping process.

[0074] See Figure 3 The specific structure of product molding unit 3 is as follows: Product molding unit 3 includes a second blow molding table 31, a molding mechanism 32, and a second air-puffing mechanism 33.

[0075] The second blow molding stage 31 is fixedly installed on the base platform and is arranged side by side with the first blow molding stage 11, serving as the mounting base for the final molding station.

[0076] See Figure 8 The molding mechanism 32 is a split-type finished product mold structure. After mold closing, it forms the final mold cavity of the finished glass bottle. Specifically, it includes a molding clamping component 321 and two sets of molding molds 322. The molding clamping component 321 is installed on the second blow molding table 31. Each set of molding molds 322 consists of two molding halves, which are respectively installed at the two gripper ends of the molding clamping component 321. When the molding clamping component 321 drives the gripper to open and close, it drives the two molding halves to align or separate in the horizontal direction. In the closed state, the two molding halves surround and form the final mold cavity that conforms to the outer contour of the finished glass bottle.

[0077] The third lifting and rotating drive component 331 is configured corresponding to the second air-blowing mechanism 33. Its cylinder body is vertically fixed to the base platform 4 via a base, and the cylinder body is a stationary fixed component. The output end of the drive component is set upwards, and the output end is fixedly connected to an adapter flange and connected to a horizontally extending third cantilever. The end of the third cantilever is vertically fixedly installed with the second air-blowing head 332. The second air-blowing head 332 has a built-in staged air passage, which is connected to a low-pressure air source and a high-pressure air source through flexible air tubes, respectively, which can realize two-stage pressure switching for blowing. The output end of the drive component can independently or synchronously complete the horizontal rotation and vertical lifting actions, driving the second air-blowing head 332 to complete the work position switching and bottle mouth sealing.

[0078] In standby mode, the output end of the third lifting and rotating drive component 331 is in a rising and retracting state, which drives the second air-puffing head 332 to stay on the side and above the molding mechanism 32, providing operating space for the blank to flip into place and for the molding mold 322 to open and close.

[0079] During the final blowing operation, after the glass preform is flipped into place and the molding mechanism 32 is closed, the drive component drives the third cantilever to rotate horizontally, so that the second air-blowing head 332 is coaxially aligned with the preform bottle mouth and the molding mold 322 cavity; then the output end moves vertically downward, pressing the lower sealing surface of the second air-blowing head 332 against the preform bottle mouth end face to form a sealed internal blowing space.

[0080] The blowing process adopts a staged pressurization process: first, the low-pressure air source is connected and compressed air is introduced for pre-blowing, so that the middle of the preform expands evenly and initially extends; then, the high-pressure air source is switched and compressed air is introduced for final blowing, so that the glass preform completely fits the inner wall of the mold 322 cavity, forming a finished bottle body that is consistent with the cavity contour.

[0081] After pressure holding, cooling and shaping, the output end of the drive component first moves vertically upward, driving the second air-puffing head 332 to disengage from the bottle mouth, and then rotates horizontally in the opposite direction to the side clearance position, making room for the molding mechanism to open the mold and the finished product to be discharged.

[0082] In this embodiment, the first lifting and rotating drive component 131, the second lifting and rotating drive component 141, and the third lifting and rotating drive component 331 all adopt rotary lifting cylinders, which can simultaneously complete the rotation and lifting actions. They have a compact structure, fast response speed, and are suitable for the fast-paced production needs of glass forming. The initial mold clamping component 122, the bottom mold clamping component 221, and the forming clamping component 321 all adopt electric grippers, which have high opening and closing position accuracy and stable clamping force, and can ensure the sealing of the mold and the forming accuracy.

[0083] Example 2: A control method for an oxy-fuel combustion melting system in a glass furnace, using the aforementioned oxy-fuel combustion melting system, includes the following steps: S1, Melt feeding: S11. The all-oxygen furnace unit heats the glass batch to 1550~1600℃ according to the preset temperature regime, and after melting, clarifying and homogenizing, it forms a glass liquid with a uniform temperature.

[0084] S12. The feeding channel of the conveying unit maintains the glass melt temperature in the forming range of 1180~1220℃. The feeder quantitatively cuts the glass melt into droplets of uniform weight and conveys them to the receiving station of the blank forming unit 1 through the guide trough.

[0085] S2, Initial shaping of the blank: S21, the initial mold clamping component 122 drives the initial mold half to close, forming the initial mold cavity.

[0086] S22, the bottom mold clamping component 221 drives the bottom mold half mold to close, the bottom mold 222 and the bottom mold 123 are sealed and connected, and the bottom mold cavity and the initial mold cavity are connected to form a complete initial forming cavity.

[0087] S23, the first lifting and rotating drive component 131 drives the receiving funnel 132 component to rotate to the top of the initial mold 123, receive the glass droplets and guide them into the initial mold cavity; after receiving the material, the receiving mechanism 13 rotates and moves out of the working area.

[0088] S24. The second lifting and rotating drive component 141 drives the first air-puffing head 142 to rotate to the top of the initial mold 123 and descend to seal, and introduces compressed air into the initial mold cavity to puff the glass droplet, so that the glass droplet extends and forms along the inner wall of the cavity, and obtains a glass preform with a complete bottle mouth structure.

[0089] The nozzle is formed in the cavity of the bottom mold 222 and is formed simultaneously with the bottle body of the preform. After forming, the nozzle is engaged in the bottom mold 222 for positioning.

[0090] S3. Raw material transfer: S31, the first air-puffing head 142 rises and rotates, the initial mold clamping part 122 drives the initial mold half to open horizontally, releasing the bottle body part of the glass blank, and the glass blank is only clamped and fixed on the bottom mold 222 through the bottle mouth part.

[0091] S32, the flip motor 211 starts, driving the mounting base 212 to rotate 180° around the horizontal axis, which in turn drives the bottom mold mechanism 22 and the glass blank held therein to move from above the first blow molding table 11 to above the second blow molding table 31.

[0092] S33. After the flipping is completed, the glass blank's posture changes from bottle mouth facing down to bottle mouth facing up and bottle body facing down, with the bottle body suspended at the center of the cavity of the molding mold 322.

[0093] S4. Final Product Formation: S41, the forming clamping component 321 drives the forming half mold to close quickly, forming the final mold cavity.

[0094] S42, the third lifting and rotating drive component 331 drives the second air-puffing head 332 to rotate to directly above the molding die 322 and then descends to align with the bottle opening of the preform.

[0095] S43. A graded pressure-boosting blowing process is adopted: first, low-pressure gas is introduced for pre-blowing to make the middle of the preform expand evenly and initially extend; then the pressure is increased for high-pressure final blowing to make the glass preform fit into the inner wall of the mold cavity of molding mold 322; pressure is maintained and cooled until the glass is shaped to obtain the finished glass bottle.

[0096] S5, Discharge reset: S51. After the shaping is completed, the molding clamping component 321 drives the molding half mold to open, and the bottom mold clamping component 221 drives the bottom mold half mold to open to release the bottle mouth. The finished glass bottle falls to the discharge conveyor line and is sent out.

[0097] S52, the reverse motor 211 drives the mounting base 212 to rotate 180°, driving the bottom mold mechanism 22 to reset below the initial mold mechanism 12, and enter the next production cycle to achieve continuous production.

[0098] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A glass furnace oxy-fuel combustion melting system, characterized in that: It includes an oxygen furnace unit for melting glass raw materials, a material conveying unit for conveying molten glass, and a forming station assembly for glass forming; The molding station assembly includes a blank molding unit (1), a connecting molding unit (2), and a product molding unit (3) connected in sequence. The blank molding unit (1), the connecting molding unit (2), and the product molding unit (3) are installed on the base platform (4). The blank forming unit (1) includes a first blow molding table (11), a primary mold mechanism (12), a receiving mechanism (13), and a first air-puffing mechanism (14) disposed on a base platform (4). The connecting molding unit (2) includes a flipping mechanism (21), a bottom mold mechanism (22), and a mounting platform (23) for fixing the flipping mechanism (21). The bottom mold mechanism (22) is located below the initial mold mechanism (12) and is used to form the bottle mouth of the glass bottle. The flipping mechanism (21) is used to drive the bottom mold mechanism (22) and the blank held by the bottom mold mechanism (22) to flip to the product molding unit (3). The product molding unit (3) includes a second blow molding table (31), a molding mechanism (32) disposed on the second blow molding table (31), and a second air-puffing mechanism (33). The material conveying unit is used to convey the glass liquid output from the oxygen furnace unit to the receiving mechanism (13) of the blank forming unit (1). The blank forming unit (1) is used to cooperate with the bottom mold mechanism (22) to blow the glass liquid into blanks. The product forming unit (3) is used to blow the transferred blanks into final products.

2. The all-oxygen combustion melting system for a glass furnace according to claim 1, characterized in that: The initial mold mechanism (12) is a split mold structure that can be opened and closed in the horizontal direction; in the closed state, the initial mold mechanism (12) and the bottom mold mechanism (22) are sealed and connected to form the initial mold cavity of the glass blank. The initial mold mechanism (12) includes a mounting frame (121), an initial mold clamping component (122), and two sets of initial molds (123). The mounting frame (121) is fixedly installed on the top of the base platform (4), and the initial mold clamping component (122) is fixedly assembled on the mounting frame (121). Each set of the initial mold (123) consists of two initial mold halves, which are respectively installed on the two claw ends of the initial mold clamping member (122); When the initial mold clamping component (122) drives the two clamping jaws to open and close, it drives the two initial mold halves to align or separate in the horizontal direction. In the closed state, the two initial mold halves surround and form the initial mold cavity of the glass preform bottle body.

3. The all-oxygen combustion melting system for a glass furnace according to claim 1, characterized in that: The receiving mechanism (13) is rotatably and vertically mounted on the first blow molding table (11) for receiving glass droplets conveyed by the conveying unit and guiding them into the initial mold cavity; The receiving mechanism (13) includes a first lifting and rotating drive (131) and a receiving funnel (132) fixedly connected to the first lifting and rotating drive (131). The first lifting and rotating drive (131) can drive the receiving funnel (132) to rotate and lift directly above the initial mold mechanism (12).

4. The all-oxygen combustion melting system for a glass furnace according to claim 1, characterized in that: The first air-blowing mechanism (14) is rotatably and vertically positioned directly above the initial mold mechanism (12) to introduce compressed gas into the initial mold cavity to complete the air-blowing of the blank. The first air-blowing mechanism (14) includes a second lifting and rotating drive (141) and a first air-blowing head (142) fixedly connected to the second lifting and rotating drive (141). The second lifting and rotating drive (141) can drive the first air-blowing head (142) to rotate and rise directly above the initial mold mechanism (12).

5. The all-oxygen combustion melting system for a glass furnace according to claim 1, characterized in that: The flipping mechanism (21) has a flipping angle of 180°. After flipping, the bottom mold mechanism (22) drives the bottle mouth end of the blank to face up and the bottle body end to face down to extend into the molding station of the product molding unit (3).

6. The all-oxygen combustion melting system for a glass furnace according to claim 5, characterized in that: The flipping mechanism (21) includes a flipping motor (211), a mounting base (212), and a placement rack (213). The flip motor (211) is mounted on the top of the mounting platform (23) by a fixing bracket, and its output shaft is set in the horizontal direction; One end of the mounting base (212) is fixedly connected to the output shaft of the flip motor (211), and the other end is rotatably connected to the placement frame (213) through a rotating shaft. The placement frame (213) is fixed on the mounting platform (23) and forms a rotational support for the mounting base (212). The flip motor (211) can drive the mounting base (212) to rotate 180° around the horizontal axis, thereby enabling the bottom mold mechanism (22) to switch positions between the blank forming unit (1) and the product forming unit (3).

7. The all-oxygen combustion melting system for a glass furnace according to claim 2, characterized in that: The bottom mold mechanism (22) includes a bottom mold clamping member (221) and two sets of bottom molds (222). The bottom mold clamping member (221) is mounted on the mounting base (212) and is fixedly mounted on the mounting base (212), rotating synchronously with the mounting base (212). Each set of bottom molds (222) consists of two bottom mold halves, which are respectively mounted on the two claw ends of the bottom mold clamping member (221). In the initial molding position, the mounting base (212) is in a horizontal position, the bottom mold (222) is facing the bottom opening of the initial mold (123), the bottom mold clamping part (221) drives the bottom mold half to close, and seals and connects with the bottom of the initial mold (123). The two bottom mold half surrounds to form the bottom mold cavity of the glass bottle mouth. The bottom mold cavity and the initial mold cavity together constitute a complete initial molding cavity.

8. The all-oxygen combustion melting system for a glass furnace according to claim 2, characterized in that: The top surface of the mounting platform (23) is provided with an upward-opening clearance groove (231). The extension direction of the clearance groove (231) is parallel to the output shaft axis of the flipping motor (211), and the position of the groove corresponds to the flipping trajectory of the mounting base (212) and the bottom mold mechanism (22).

9. The all-oxygen combustion melting system for a glass furnace according to claim 1, characterized in that: The molding mechanism (32) is a split-type finished product mold, which forms the final mold cavity of the finished glass bottle after the mold is closed; the second air-blowing mechanism (33) is vertically mounted above the molding mechanism (32) and is used to blow gas into the blank to complete the final molding. The molding mechanism (32) includes a molding clamping member (321) and two sets of molding molds (322). The molding clamping member (321) is installed on the second blow molding table (31). Each set of molding molds (322) consists of two molding half molds, which are respectively installed on the two claw ends of the molding clamping member (321). When the clamping jaws of the molding clamping component (321) open and close, they drive the two molding half molds to align or separate in the horizontal direction. In the mold-closed state, the two molding half molds enclose and form a final mold cavity that is consistent with the outer contour of the finished glass bottle. The second air-blowing mechanism (33) includes a third lifting and rotating drive (331) and a second air-blowing head (332) fixedly connected to the third lifting and rotating drive (331). The second air-blowing head (332) can be moved above the forming mechanism (32) under the drive of the third lifting and rotating drive (331).

10. A control method for an oxy-fuel combustion melting system in a glass furnace, using the oxy-fuel combustion melting system in a glass furnace as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. The glass raw material is melted and clarified to form glass liquid through the oxygen furnace unit, and the glass liquid is quantitatively transported to the receiving station of the blank forming unit (1) through the material conveying unit. S2. The receiving mechanism (13) introduces the molten glass into the molded initial mold mechanism (12) in the mold closing state. The bottom mold mechanism (22) and the initial mold mechanism (12) are sealed and connected at the bottom to form the initial mold cavity. The first gas blowing mechanism (14) introduces blowing gas into the initial mold cavity to form the molten glass into a glass preform with a bottle nozzle structure. The bottle nozzle part is formed in the bottom mold mechanism (22). S3, the initial mold mechanism (12) opens the mold to release the preform bottle body part, and the flipping mechanism (21) drives the bottom mold mechanism (22) and the clamped glass preform to flip, transferring the glass preform to the second blow molding table (31) of the product forming unit (3); S4. The molding mechanism (32) closes the mold to form the final mold cavity. The second gas blowing mechanism (33) introduces blowing gas into the blank, so that the glass blank extends and fits the inner wall of the final mold cavity. After shaping, the finished glass bottle is obtained.

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