Method and system for producing square flat bottle

Abstract

The invention discloses a production method of a square flat bottle. The production method comprises the whole process of raw material treatment, forming, annealing and inspection and packaging. Precise positioning of the die is ensured through a specially-made positioning pin and a clamp, the die is uniquely designed and matched into a die plane steering positioning groove, and the appearance and physical performance of a product are improved by combining a prototype die variable balance technology. Quality and proportion of raw materials such as quartz sand and the like are strictly controlled, and the raw materials are mixed, crushed, screened and then melted at 1200-1500 DEG C. A blowing-blowing method is adopted for forming in an EF-type rank machine, and all parameters are accurately controlled. The linear annealing system eliminates internal stress in stages, and product stability is improved. Multi-link inspection is performed in the production process, irregular sampling inspection is performed after production is finished, and product quality is guaranteed. And packaging materials such as bubble films, cartons and foam plastic boxes are adopted to ensure the transportation safety. The production technology greatly improves the product quality and the production efficiency in the aspect of manufacturing the square flat bottle, reduces the cost, and meets the environmental protection requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of glass bottle production, and in particular to a production method and system for a square flat bottle. Background Art

[0002] In the field of glass product manufacturing, glass bottles are key packaging containers for alcoholic beverages, and the development of their production technology is crucial to improving product quality, reducing production costs, meeting the diversified needs of the market, and promoting the sustainable development of the industry. With the continuous expansion of the alcohol market, consumers have increasingly higher requirements for the quality, appearance, and functionality of glass bottles. At the same time, industry competition has become increasingly fierce, which has prompted glass bottle manufacturers to continuously seek technological innovation and process optimization. However, traditional glass bottle production technology has limitations in many aspects and is difficult to meet the needs of current market and industry development.

[0003] First, the mold positioning and molding accuracy are poor: in the traditional glass wine bottle production, there is a lack of precise technical means for mold positioning. The commonly used positioning method relies only on simple fixtures and rough measurements. It is impossible to accurately determine the reference surface positioning starting point like the special positioning pins and special fixtures used in this application, resulting in unstable mold processing. The glass wine bottles produced in this way have large size deviations, and the shapes of the bottle body and bottle mouth are irregular. For example, it is difficult to keep the inner diameter of the bottle mouth consistent, which not only affects the appearance, but also reduces the compatibility with the bottle stopper, resulting in poor sealing, and the wine products are easy to volatilize and deteriorate, which seriously affects the product quality.

[0004] Secondly, insufficient control over glass performance: In terms of glass performance control, traditional processes cannot achieve precise control and testing in stages. The lack of effective regulation of key indicators such as glass heat, stress, and material properties results in low strength and poor thermal shock resistance of glass bottles. When the temperature changes, the bottles are prone to breakage. During transportation and storage, cracks are common due to internal stress concentration, which greatly increases product losses and cannot meet the market demand for high-quality glass bottles.

[0005] Unscientific annealing process: Annealing is an important part of glass wine bottle production, but the traditional annealing system is not sophisticated enough. Most manufacturers cannot reasonably adjust the annealing temperature and time according to the shape, size, thickness and other factors of the glass products, and often adopt a one-size-fits-all approach. For example, the same annealing procedure is used for wine bottles of different thicknesses, resulting in incomplete stress elimination. This not only reduces the physical properties and chemical stability of the product, but also makes the wine bottle a safety hazard in subsequent use, prone to rupture, affecting product quality and consumer experience.

[0006] The molding process is inefficient: Traditional glass wine bottle molding processes, such as simple blowing or pressing methods, are complex to operate and rely on manual experience. Taking the traditional blowing process as an example, after the glass liquid is injected into the mold, the blowing force and time need to be adjusted manually many times, which makes it difficult to achieve automated and standardized production. Compared with the blow-blowing method combined with the EF-type row machine and vacuum-assisted molding of this application, the traditional process has a long production cycle and a small production quantity per minute. It cannot meet the large-scale order demand brought about by the rapid growth of the wine market and is at a disadvantage in market competition.

[0007] Imperfect inspection process: There are loopholes in the inspection process of traditional production. The inspection items are not comprehensive, often focusing on appearance inspection, ignoring key indicators such as stress and dimensional accuracy. Moreover, the inspection time is delayed and is mostly carried out in the late stage of production. Once quality problems are found, a large number of semi-finished products have been produced and can only be reworked or scrapped, resulting in serious waste of time and materials, affecting production progress and efficiency.

[0008] How to systematically solve or further improve the above production process is an important direction for the development of square flat glass bottles. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings of the prior art and propose a method for producing a square flat bottle, which comprises the following steps: Mouth die positioning: Use special positioning pins to embed into the corresponding holes of the mould, use special fixtures to fix the mould on the mould processing table, use measuring tools to accurately measure and adjust, determine the reference surface positioning starting point, and ensure that the mould processing process is stable and the position is accurate; Mouth molding: Make a uniquely designed bottle mouth, so that the inner diameter of the bottle mouth is a straight section, the outer edge of the mouth is rounded and there is a small hole on each side to ensure that the inside of the bottle mouth is round and smooth; Bottle bottom forming: Using the mold plane to turn to the positioning groove, the cooling air enters the mold from the gap of the mold and the gap at the positioning of the bottom mold seat, squeezes the embryo, and moves the inner side of the embryo inward to ensure the thickness and flatness of the bottle bottom; Prototype adjustment: Use professional tooling to detect the differences between the various variable parts of the prototype and the standard, and achieve collaborative balance of the various variables of the prototype; Glass performance control: accurately control the physical properties of glass in stages, and precisely detect the heat, stress, material properties and strength of glass material properties; Raw material processing and melting: select quartz sand, soda ash, limestone, feldspar and the like as the main raw materials, add auxiliary raw materials such as clarifiers, colorants, decolorizers and the like according to product requirements, mix, crush and screen the raw materials, and heat and melt them in a glass kiln at 1200℃-1500℃; wherein the purity of the quartz sand is not less than 98%, the impurity content is not higher than 0.5%, and the particle size distribution is 20-100 mesh; the mass proportion of the soda ash in the raw materials is 15%-20%; the mass proportion of the limestone in the raw materials is 5%-10%; the mass proportion of the feldspar in the raw materials is 8%-12%; Molding: Blow-blow method is adopted. Vacuum-assisted molding can be selected in the primary mold of the EF-type array machine. The first blowing is carried out in the primary mold to shape the mouth and blow it into a prototype, and then it is transferred to the molding mold for the second blowing. According to the feeding method, it is divided into two molding methods: vacuum suction and drip feeding; among them, the air pressure is 0.3-0.5MPa, the air blowing time is 0.5-1 second, and the vacuum degree of the mouth mold is -0.05--0.08MPa; the rising speed of the top core is 5-8mm / s; the reverse blowing time is 1-3 seconds; the prototype turning speed is 1-3 turns / second; the blowing pressure is determined according to the shape and weight of the product according to the blowing pressure (MPa) = 0.8-product weight (kg) × 0.1 (when the product weight is <8kg), and the blowing time is determined according to the product weight according to the blowing time (seconds) = product weight (kg) × 0.5 (when the product weight is <8kg); Annealing: A linear annealing method is used, including a preheating stage (300-400°C), a heating stage (400-500°C), a heat preservation stage (500-600°C) and a cooling stage (600°C-room temperature). The annealing process is adjusted according to factors such as the shape, size, thickness uniformity of the glass product and the uniformity of temperature distribution in the annealing furnace. Among them, the heating rate in the preheating stage is 10-15°C / minute, the heating rate in the heating stage is 5-8°C / minute, the heat preservation time in the heat preservation stage is determined according to the thickness of the product according to the heat preservation time (minutes) = product thickness (mm) × 2, and the cooling rate in the cooling stage is 3-5°C / minute; Inspection of production process: make a preliminary judgment on the weight, shape, color and other appearance of the product at the hot end of the production line and confirm the inner diameter of the bottle mouth; observe the influence of the belt speed and annealing time of the annealing furnace mesh belt on the stress and appearance of the product, and deal with problems in time; intercept a group of products containing each mold number on the annealing furnace mesh belt in a straight line to measure and record the data, and take photos of key items for preservation; carry out packaging tests on the inspected products, check the packaging height and tightness, and test the matching and sealing of the bottle stopper and bottle mouth if there is a bottle stopper, and keep samples of the products; carry out comprehensive quality inspection during the day, and conduct random inspections of glass bottles that are not put into storage at night according to time periods; among them, the number of each group of products intercepted on the annealing furnace mesh belt is 10, and the items for measuring product data include bottle body diameter, bottle height, and bottle wall thickness, with measurement accuracy of ±0.1mm, ±0.2mm, and ±0.05mm respectively; Inspection after production: According to product characteristics, local seasonal conditions and storage conditions, the packed products are inspected from time to time to check for quality differences caused by factors such as temperature difference between workshop and warehouse, storage conditions, etc., such as moldy packaging, sticky labels, etc., and deal with them in a timely manner.

[0010] Preferably, in the selection of raw materials, the purity of the quartz sand is not less than 98%, the impurity content is not higher than 0.5%, and the particle size distribution is 20-100 mesh; the mass proportion of the soda ash in the raw material is 15%-20%; the mass proportion of the limestone in the raw material is 5%-10%; the mass proportion of the feldspar in the raw material is 8%-12%.

[0011] Preferably, in the blow-blow molding process, the air puffing pressure is 0.3-0.5MPa, the air puffing time is 0.5-1 second, the vacuum degree of the mouth mold is -0.05-0.08MPa; the rising speed of the top core is 5-8mm / s; the reverse blowing time is 1-3 seconds; the prototype flipping speed is 1-3 revolutions / second; the blowing pressure is determined according to the shape and weight of the product according to the blowing pressure (MPa) = 0.8-product weight (kg) × 0.1 (when the product weight is <8kg), and the blowing time is determined according to the product weight according to the blowing time (seconds) = product weight (kg) × 0.5 (when the product weight is <8kg).

[0012] Preferably, during the annealing process, the heating rate in the preheating stage is 10-15°C / minute, the heating rate in the heating stage is 5-8°C / minute, the holding time in the holding stage is determined according to the thickness of the product according to the holding time (minutes) = product thickness (mm) × 2, and the cooling rate in the cooling stage is 3-5°C / minute.

[0013] Preferably, in the production process inspection, the number of each group of products intercepted on the annealing furnace mesh belt is 10, and the items of product data measured include bottle body diameter, bottle height, and bottle wall thickness, with measurement accuracy of ±0.1mm, ±0.2mm, and ±0.05mm respectively.

[0014] An equipment system for producing square flat bottles, comprising: Mold positioning device: including special positioning pins and special fixtures, used to position the mold during mold processing to ensure stable mold processing and accurate positioning; Forming mold: including a prototype mold and a forming mold with specific structures. The prototype mold is inverted and has a structure that cooperates with air blowing, vacuuming, and core pushing. The forming mold is used for secondary blow molding of the prototype and can heat and stretch the prototype; Raw material processing equipment: used for mixing, crushing and screening raw materials such as quartz sand and soda ash, with precise batching function and batching accuracy of ±0.5%; the mixing uniformity of the mixing device reaches more than 98%, and the mesh number of the screening device is 20-100 mesh; Glass kiln: used to heat the processed raw materials to 1200℃-1500℃ for melting; Annealing furnace: adopts linear annealing method, sets preheating zone (300-400℃), heating zone (400-500℃), insulation zone (500-600℃) and cooling zone (600℃-room temperature), and the temperature control accuracy of each zone is ±5℃; among them, the power of the heating device is 50-80kW, and the cooling rate adjustment range of the cooling device is 2-6℃ / minute; Testing equipment: used to test the weight, shape, color, inner diameter of the bottle mouth, stress, bottle size, etc. of the product during the production process, and to test the quality differences of the product after the production is completed; Packaging equipment: It has the function of packaging products using packaging materials such as bubble film, cartons, and foam plastic boxes.

[0015] Preferably, the mixing uniformity of the mixing device of the raw material processing equipment reaches more than 98%, and the mesh size of the screening device is 20-100 meshes.

[0016] Preferably, the turning speed adjustment range of the turning mechanism between the preliminary mold and the forming mold of the forming mold is 1-3 revolutions per second, and the pressure adjustment range of the blowing device is 0.2-0.8 MPa.

[0017] Preferably, the heating device of the annealing furnace has a power of 50-80 kW, and the cooling device has a cooling rate adjustment range of 2-6° C. / min.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the special positioning pins, special fixtures and the precise measurement and adjustment of the die positioning structure, the mold processing process can be stable and the position is accurate, thereby ensuring that the subsequent production of square flat bottles has accurate size and regular shape, greatly improving the appearance and structural quality of the product; 2. The unique design structure of the bottle mouth with a straight inner diameter, a rounded outer edge and a small hole on each side can ensure that the inside of the bottle mouth is round and smooth, which not only improves the touch and sealing of the bottle mouth, but also enhances the overall aesthetics and practicality of the product; 3. Through the die plane turning positioning groove, the cooling air enters the structure of the extruded material embryo from the die gap, which can effectively ensure the thickness and flatness of the bottle bottom, improve the pressure resistance and stability of the bottle bottom, and further improve the product quality; 4. By using professional tooling to detect the differences between various variable parts of the prototype and the standard, a structure with a coordinated balance of various variables of the prototype can be achieved, which can accurately control the uniformity of the bottle wall thickness, enhance the physical properties of the product, and reduce defects and scrap rates; 5. By accurately controlling the physical properties of glass in stages and accurately testing the heat, stress, material properties and the length and shortness of the material properties of the glass, the glass wine bottle can have good strength and stability, be able to better withstand temperature changes and mechanical external forces, and reduce the risk of breakage during transportation and use; 6. By adopting a linear annealing method and accurately controlling the annealing structure of the temperature and time in the preheating, heating, insulation and cooling stages, the internal stress of glass products can be effectively eliminated, the physical properties and chemical stability of the products can be greatly improved, and the cracking phenomenon caused by internal stress can be reduced; 7. Through the blow-blow method combined with the EF-type row machine, vacuum-assisted molding can be selected, and the molding structure of the air blowing parameters and the prototype turning speed can be reasonably controlled to improve the molding efficiency; blowing in advance can reduce the surface wrinkles of the product, and appropriately extend the reverse blowing time to reduce the heat dissipation difference of the glass material, which is conducive to increasing the machine speed, shortening the production cycle, and increasing the output per unit time; 8. By setting up multiple inspection structures such as hot end inspection, annealing furnace belt monitoring, product data measurement, and packaging testing during the production process, problems can be discovered and handled in a timely manner, batch quality problems can be avoided, rework and scrap losses can be reduced, production continuity can be guaranteed, and overall production efficiency can be improved; 9. The raw material control structure that accurately controls the quality, purity and proportion of raw materials such as quartz sand and soda ash can reduce unnecessary raw material consumption and waste, avoid excessive addition of auxiliary raw materials, and reduce raw material costs; 10 By using soda ash to lower the melting point of raw materials and make the raw materials melt at a lower temperature, the energy consumption in the glass melting process can be reduced. At the same time, the scientific annealing process can reasonably control the temperature and time of each stage, improve energy utilization efficiency and reduce production costs; 11 By improving product quality and optimizing the design structure of the bottle mouth, bottle body and bottle bottom structure, glass wine bottles can better meet the packaging needs of wine products. Good physical properties and chemical stability ensure the safety of wine storage and transportation; the unique mouth design facilitates filling and sealing, and the uniformity of the bottle shape and thickness improves the product's aesthetics and practicality, enhancing the product's market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention provides a method and system for producing a square flat bottle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Referring to the figure, this embodiment provides a method for producing a square flat bottle, which includes the following steps: Mouth die positioning: Use special positioning pins to embed into the corresponding holes of the mould, use special fixtures to fix the mould on the mould processing table, use measuring tools to accurately measure and adjust, determine the reference surface positioning starting point, and ensure that the mould processing process is stable and the position is accurate; Mouth molding: Make a uniquely designed bottle mouth, so that the inner diameter of the bottle mouth is a straight section, the outer edge of the mouth is rounded and there is a small hole on each side to ensure that the inside of the bottle mouth is round and smooth; Bottle bottom forming: Using the mold plane to turn to the positioning groove, the cooling air enters the mold from the gap of the mold and the gap at the positioning of the bottom mold seat, squeezes the embryo, and moves the inner side of the embryo inward to ensure the thickness and flatness of the bottle bottom; Prototype adjustment: Use professional tooling to detect the differences between the various variable parts of the prototype and the standard, and achieve collaborative balance of the various variables of the prototype; Glass performance control: accurately control the physical properties of glass in stages, and precisely detect the heat, stress, material properties and strength of glass material properties; Raw material processing and melting: select quartz sand, soda ash, limestone, feldspar and the like as the main raw materials, add auxiliary raw materials such as clarifiers, colorants, decolorizers and the like according to product requirements, mix, crush and screen the raw materials, and heat and melt them in a glass kiln at 1200℃-1500℃; wherein the purity of the quartz sand is not less than 98%, the impurity content is not higher than 0.5%, and the particle size distribution is 20-100 mesh; the mass proportion of the soda ash in the raw materials is 15%-20%; the mass proportion of the limestone in the raw materials is 5%-10%; the mass proportion of the feldspar in the raw materials is 8%-12%; Molding: Blow-blow method is adopted. Vacuum-assisted molding can be selected in the primary mold of the EF-type array machine. The first blowing is carried out in the primary mold to shape the mouth and blow it into a prototype, and then it is transferred to the molding mold for the second blowing. According to the feeding method, it is divided into two molding methods: vacuum suction and drip feeding; among them, the air pressure is 0.3-0.5MPa, the air blowing time is 0.5-1 second, and the vacuum degree of the mouth mold is -0.05--0.08MPa; the rising speed of the top core is 5-8mm / s; the reverse blowing time is 1-3 seconds; the prototype turning speed is 1-3 turns / second; the blowing pressure is determined according to the shape and weight of the product according to the blowing pressure (MPa) = 0.8-product weight (kg) × 0.1 (when the product weight is <8kg), and the blowing time is determined according to the product weight according to the blowing time (seconds) = product weight (kg) × 0.5 (when the product weight is <8kg); Annealing: A linear annealing method is used, including a preheating stage (300-400°C), a heating stage (400-500°C), a heat preservation stage (500-600°C) and a cooling stage (600°C-room temperature). The annealing process is adjusted according to factors such as the shape, size, thickness uniformity of the glass product and the uniformity of temperature distribution in the annealing furnace. Among them, the heating rate in the preheating stage is 10-15°C / minute, the heating rate in the heating stage is 5-8°C / minute, the heat preservation time in the heat preservation stage is determined according to the thickness of the product according to the heat preservation time (minutes) = product thickness (mm) × 2, and the cooling rate in the cooling stage is 3-5°C / minute; Inspection of production process: make a preliminary judgment on the weight, shape, color and other appearance of the product at the hot end of the production line and confirm the inner diameter of the bottle mouth; observe the influence of the belt speed and annealing time of the annealing furnace mesh belt on the stress and appearance of the product, and deal with problems in time; intercept a group of products containing each mold number on the annealing furnace mesh belt in a straight line to measure and record the data, and take photos of key items for preservation; carry out packaging tests on the inspected products, check the packaging height and tightness, and test the matching and sealing of the bottle stopper and bottle mouth if there is a bottle stopper, and keep samples of the products; carry out comprehensive quality inspection during the day, and conduct random inspections of glass bottles that are not put into storage at night according to time periods; among them, the number of each group of products intercepted on the annealing furnace mesh belt is 10, and the items for measuring product data include bottle body diameter, bottle height, and bottle wall thickness, with measurement accuracy of ±0.1mm, ±0.2mm, and ±0.05mm respectively; Inspection after production: According to product characteristics, local seasonal conditions and storage conditions, the packed products are inspected from time to time to check for quality differences caused by factors such as temperature difference between workshop and warehouse, storage conditions, etc., such as moldy packaging, sticky labels, etc., and deal with them in a timely manner.

[0022] Furthermore, in the selection of raw materials, the purity of the quartz sand is not less than 98%, the impurity content is not higher than 0.5%, and the particle size distribution is 20-100 mesh; the mass proportion of the soda ash in the raw materials is 15%-20%; the mass proportion of the limestone in the raw materials is 5%-10%; the mass proportion of the feldspar in the raw materials is 8%-12%.

[0023] Furthermore, in the blow-blow molding process, the air puffing pressure is 0.3-0.5MPa, the air puffing time is 0.5-1 second, the vacuum degree of the vacuum mold is -0.05-0.08MPa; the rising speed of the top core is 5-8mm / s; the reverse blowing time is 1-3 seconds; the prototype flipping speed is 1-3 revolutions / second; the blowing pressure is determined according to the shape and weight of the product as follows: blowing pressure (MPa) = 0.8-product weight (kg) × 0.1 (when the product weight is <8kg), and the blowing time is determined according to the product weight as follows: blowing time (seconds) = product weight (kg) × 0.5 (when the product weight is <8kg).

[0024] Furthermore, during the annealing process, the heating rate in the preheating stage is 10-15°C / minute, the heating rate in the heating stage is 5-8°C / minute, the holding time in the holding stage is determined according to the thickness of the product according to the holding time (minutes) = product thickness (mm) × 2, and the cooling rate in the cooling stage is 3-5°C / minute.

[0025] Furthermore, in the production process inspection, the number of products intercepted from the annealing furnace mesh belt is 10 in each group, and the items of product data measured include bottle body diameter, bottle height, and bottle wall thickness, with measurement accuracy of ±0.1mm, ±0.2mm, and ±0.05mm respectively.

[0026] An equipment system for producing square flat bottles, comprising: Mold positioning device: including special positioning pins and special fixtures, used to position the mold during mold processing to ensure stable mold processing and accurate positioning; Forming mold: including a prototype mold and a forming mold with specific structures. The prototype mold is inverted and has a structure that cooperates with air blowing, vacuuming, and core pushing. The forming mold is used for secondary blow molding of the prototype and can heat and stretch the prototype; Raw material processing equipment: used for mixing, crushing and screening raw materials such as quartz sand and soda ash, with precise batching function and batching accuracy of ±0.5%; the mixing uniformity of the mixing device reaches more than 98%, and the mesh number of the screening device is 20-100 mesh; Glass kiln: used to heat the processed raw materials to 1200℃-1500℃ for melting; Annealing furnace: adopts linear annealing method, sets preheating zone (300-400℃), heating zone (400-500℃), insulation zone (500-600℃) and cooling zone (600℃-room temperature), and the temperature control accuracy of each zone is ±5℃; among them, the power of the heating device is 50-80kW, and the cooling rate adjustment range of the cooling device is 2-6℃ / minute; Testing equipment: used to test the weight, shape, color, inner diameter of the bottle mouth, stress, bottle size, etc. of the product during the production process, and to test the quality differences of the product after the production is completed; Packaging equipment: It has the function of packaging products using packaging materials such as bubble film, cartons, and foam plastic boxes.

[0027] Furthermore, the mixing uniformity of the mixing device of the raw material processing equipment reaches more than 98%, and the mesh number of the screening device is 20-100 meshes.

[0028] Furthermore, the turning speed adjustment range of the turning mechanism between the preliminary mold and the forming mold of the forming mold is 1-3 revolutions per second, and the pressure adjustment range of the blowing device is 0.2-0.8 MPa.

[0029] Furthermore, the heating device of the annealing furnace has a power of 50-80 kW, and the cooling device has a cooling rate adjustment range of 2-6° C. / minute.

[0030] According to the above embodiments, the present application also has the following application scenarios: Application scenario 1: Conventional production process Raw material preparation stage: select quartz sand with a purity of 98.5%, an impurity content of 0.3%, and a particle size of 30-80 mesh, and weigh soda ash, limestone, and feldspar according to the weight ratio of 18%, 7%, and 10%. At the same time, according to product requirements, add arsenic oxide accounting for 0.3% of the total weight of the raw materials as a clarifier to remove bubbles in the glass and improve transparency. These raw materials are put into the raw material processing equipment. The mixing device of the equipment uses an efficient stirring method to make the raw material mixing uniformity reach 98.5%. The screening device screens the raw materials through a 50-mesh screen to remove particles that do not meet the particle size requirements to ensure the stability of the raw material quality.

[0031] Melting stage: put the processed raw materials into the glass kiln, set the temperature of the glass kiln at 1350℃, and continue heating to completely melt the raw materials. During the melting process, soda ash plays a role in lowering the melting point, so that the raw materials are fully melted at a relatively low temperature, effectively reducing energy consumption.

[0032] Forming stage: The forming operation is carried out on the EF-type row machine by the blow-blow method. The prototype mold is inverted, and after the glass drop is loaded, the air blowing head quickly blows air into the prototype mold. The air blowing pressure is set to 0.4MPa, and the air blowing time is 0.8 seconds. At the same time, the mouth mold is evacuated, and the vacuum degree reaches -0.06MPa, which prompts the glass material to fully enter the mouth mold to form the bottle head. The top core rises at a speed of 6mm / s to form the bottle mouth and air cavity. Subsequently, compressed air enters the air cavity through the gap between the core and the sleeve to blow air. The reverse blowing time is controlled at 2 seconds to form a symmetrical prototype. After the prototype mold is fully opened, the flipping mechanism flips the prototype 180° at a speed of 2 turns / second in the vertical plane and transfers it into the forming mold. In the forming mold, the prototype extends downward and stretches by its own weight. At the same time, the air blowing head presses the bottle mouth and passes compressed air calculated according to the weight and shape of the product. For a square flat bottle weighing 0.5kg, the blowing pressure is 0.75MPa and the blowing time is 0.25 seconds, and the prototype is blown into the desired product shape.

[0033] Annealing stage: The formed square flat bottle enters the annealing furnace for annealing. In the preheating stage, the product is heated from room temperature to 350℃ at a heating rate of 12℃ / minute, so that the glass products gradually adapt to the high temperature environment. Then enter the heating stage, the temperature is raised to 450℃ at a rate of 6℃ / minute. This process is a slow heating to avoid excessive internal stress. In the insulation stage at 550℃, the insulation time is 6 minutes based on the bottle thickness of 3mm, which fully eliminates internal stress. In the final cooling stage, the temperature is reduced from 600℃ to room temperature at a cooling rate of 4℃ / minute to ensure that the product's stress is completely eliminated and the physical properties and chemical stability are improved.

[0034] Inspection stage of production process: At the hot end of the production line, the operator makes a preliminary judgment on the weight, shape and color of the product, and uses a special measuring tool to measure the inner diameter of the bottle mouth to ensure that it meets the design requirements. On the annealing furnace mesh belt, 10 products containing each mold number are intercepted in a straight line at regular intervals, and the bottle body diameter is measured using a caliper with an accuracy of ±0.1mm, the bottle height is measured using a height gauge with an accuracy of ±0.2mm, and the bottle wall thickness is measured using a wall thickness gauge with an accuracy of ±0.05mm, and the data is recorded truthfully. If a product has quality problems, communicate with the quality inspector immediately, decide on the product selection according to the product quality control standards, take photos of the problem products, and send them to the relevant person in charge. The qualified products are packaged and tested, placed in cartons, and filled with kraft paper as shockproof material, and the height and tightness of the packaging are checked. If the product is equipped with a bottle stopper, the matching degree of the bottle stopper and the bottle mouth is tested, and the bottle stopper is installed and left to stand for 24 hours to observe whether there is leakage or pop-up cover. Samples of the products produced every day are retained to compare the color changes of the materials. During the day, the products are fully quality inspected, and at night, the glass bottles that are not put into storage are randomly inspected every 2 hours.

[0035] Inspection stage after production: After the product is packed, random inspections are carried out at irregular intervals according to the local season and storage conditions. In the rainy season, the inspection frequency is increased to check whether the product is moldy; for adhesive-labeled products, regular inspections are carried out to check whether the label stickiness meets the standard. If the packaging is found to be moldy, the packaging and pallets are replaced in time to ensure that the product is in good storage condition.

[0036] Application scenario 2: Production adjustments to meet special needs Raw material adjustment: If the customer has special color requirements for the square bottle, such as green glass wine bottles, add 0.5% of the total weight of iron oxide to the raw materials as a colorant. At the same time, in order to ensure that the transparency of the glass is not affected too much, the amount of decolorant is appropriately adjusted to remove the bad color caused by impurities and colorants to ensure product quality.

[0037] Adjustment of molding process: When producing a batch of large-sized square flat bottles, the blowing pressure and time in the molding process need to be adjusted due to changes in product weight and shape. For a large-sized flat bottle weighing 1kg, the blowing pressure is adjusted to 0.7MPa according to the blowing pressure calculation formula, and the blowing time is adjusted to 0.5 seconds according to the formula. At the same time, considering the flow and distribution of the glass material in the mold, the reverse blowing time in the primary mold is appropriately extended to 2.5 seconds to reduce the difference in heat dissipation of the glass material in the primary mold and the molding mold, ensuring uniform wall thickness of the bottle body and stable product quality.

[0038] Annealing process optimization: For large-sized square flat bottles, the holding time during the annealing process needs to be adjusted according to the thickness. If the bottle thickness is 5mm, the holding time is calculated as 10 minutes according to the formula to fully eliminate internal stress. The cooling rate in the cooling stage is appropriately reduced to 3℃ / minute to avoid product cracking or deformation due to too fast cooling, thereby ensuring product quality.

[0039] Inspection and packaging enhancement: During the production process inspection, for large-sized products, additional inspection items for bottle flatness and verticality are added. Products are inspected using a flatness inspection platform and a verticality measuring instrument to ensure that the products meet high standards in appearance and dimensional accuracy. In the packaging process, thicker bubble films and stronger cartons are used, and the amount of foam plastic filling is increased to better protect the safety of products during transportation and storage.

[0040] It can be seen from the above embodiments and application scenarios that the present application has the following advantages over the prior art: 1. Through the special positioning pins, special fixtures and the precise measurement and adjustment of the die positioning structure, the mold processing process can be stable and the position is accurate, thereby ensuring that the subsequent production of square flat bottles has accurate size and regular shape, greatly improving the appearance and structural quality of the product; 2. The unique design structure of the bottle mouth with a straight inner diameter, a rounded outer edge and a small hole on each side can ensure that the inside of the bottle mouth is round and smooth, which not only improves the touch and sealing of the bottle mouth, but also enhances the overall aesthetics and practicality of the product; 3. Through the die plane turning positioning groove, the cooling air enters the structure of the extruded material embryo from the die gap, which can effectively ensure the thickness and flatness of the bottle bottom, improve the pressure resistance and stability of the bottle bottom, and further improve the product quality; 4. By using professional tooling to detect the differences between various variable parts of the prototype and the standard, a structure with a coordinated balance of various variables of the prototype can be achieved, which can accurately control the uniformity of the bottle wall thickness, enhance the physical properties of the product, and reduce defects and scrap rates; 5. By accurately controlling the physical properties of glass in stages and accurately testing the heat, stress, material properties and the length and shortness of the material properties of the glass, the glass wine bottle can have good strength and stability, be able to better withstand temperature changes and mechanical external forces, and reduce the risk of breakage during transportation and use; 6. By adopting a linear annealing method and accurately controlling the annealing structure of the temperature and time in the preheating, heating, insulation and cooling stages, the internal stress of glass products can be effectively eliminated, the physical properties and chemical stability of the products can be greatly improved, and the cracking phenomenon caused by internal stress can be reduced; 7. Through the blow-blow method combined with the EF-type row machine, vacuum-assisted molding can be selected, and the molding structure of the air blowing parameters and the prototype turning speed can be reasonably controlled to improve the molding efficiency; blowing in advance can reduce the surface wrinkles of the product, and appropriately extend the reverse blowing time to reduce the heat dissipation difference of the glass material, which is conducive to increasing the machine speed, shortening the production cycle, and increasing the output per unit time; 8. By setting up multiple inspection structures such as hot end inspection, annealing furnace belt monitoring, product data measurement, and packaging testing during the production process, problems can be discovered and handled in a timely manner, batch quality problems can be avoided, rework and scrap losses can be reduced, production continuity can be guaranteed, and overall production efficiency can be improved; 9. The raw material control structure that accurately controls the quality, purity and proportion of raw materials such as quartz sand and soda ash can reduce unnecessary raw material consumption and waste, avoid excessive addition of auxiliary raw materials, and reduce raw material costs; 10 By using soda ash to lower the melting point of raw materials and make the raw materials melt at a lower temperature, the energy consumption in the glass melting process can be reduced. At the same time, the scientific annealing process can reasonably control the temperature and time of each stage, improve energy utilization efficiency and reduce production costs; 11 By improving product quality and optimizing the design structure of the bottle mouth, bottle body and bottle bottom structure, glass wine bottles can better meet the packaging needs of wine products. Good physical properties and chemical stability ensure the safety of wine storage and transportation; the unique mouth design facilitates filling and sealing, and the uniformity of the bottle shape and thickness improves the product's aesthetics and practicality, enhancing the product's market competitiveness.

[0041] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0042] In addition, in the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] Furthermore, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

Claims

1. A method for producing a square flat bottle, characterized in that: include: Die positioning: Use special positioning pins and fixtures to fix the die, and accurately adjust and determine the reference surface positioning starting point; Mouth molding: Make the mouth of the bottle, with a straight inner diameter, a rounded outer edge and small holes on both sides to ensure a smooth interior; Bottle bottom forming: Use the mold plane to turn the positioning groove to inlet and extrude the preform to ensure the thickness and flatness of the bottle bottom; Prototype mold adjustment: Use professional tooling to detect and balance the variable parts of the prototype mold; Glass performance control: Control the physical properties of glass in stages, and accurately detect heat, stress and material properties; Raw material processing and melting: Quartz sand, soda ash, limestone and feldspar are used as the main raw materials, and auxiliary raw materials are added, mixed, crushed and screened before melting at 1200℃-1500℃; Forming: Blow-blow method is adopted, and vacuum-assisted forming can be performed on the EF type row machine primary mold; Annealing: Linear annealing is adopted, which includes a preheating stage of 300-400℃, a heating stage of 400-500℃, a heat preservation stage of 500-600℃, and a cooling stage of 600℃-room temperature; Production process inspection: The hot end makes a preliminary judgment on the appearance and inner diameter of the bottle mouth, observes the influence of the annealing furnace mesh belt, intercepts multiple products from each group for measurement, and conducts packaging tests; Inspection after production: Randomly check the packed products from time to time to deal with quality differences.

2. The method for producing a square flat bottle according to claim 1, characterized in that: The specific requirements for the raw materials are that the purity of quartz sand is ≥98%, impurities are ≤0.5%, and the particle size is 20-100 mesh, soda ash accounts for 15%-20%, limestone accounts for 5%-10%, and feldspar accounts for 8%-12%.

3. The method for producing a square flat bottle according to claim 1, characterized in that: The molding process parameters are as follows: air blowing pressure 0.3-0.5MPa, time 0.5-1 second, vacuum degree -0.05-0.08MPa, core rising speed 5-8mm / s, reverse blowing time 1-3 seconds, prototype turning speed 1-3 revolutions / second, and the blowing pressure and time are determined by a specific formula.

4. The method for producing a square flat bottle according to claim 1, characterized in that: The parameters of each stage of the annealing process are preheating heating rate of 10-15°C / min, heating heating rate of 5-8°C / min, holding time = product thickness × 2 minutes, and cooling rate of 3-5°C / min.

5. The method for producing a square flat bottle according to claim 1, characterized in that: During the production process inspection, 10 products are cut from each group, and the measurement accuracy is ±0.1mm for bottle diameter, ±0.2mm for bottle height, and ±0.05mm for bottle wall thickness.

6. An equipment system for producing square flat bottles, characterized in that: include: Mould positioning device: special positioning pins and fixtures ensure accurate positioning of mould processing; Forming mold: including primary mold and forming mold, the primary mold is inverted to cooperate with related actions, and the forming mold is blown for the second time and heated and stretched; Raw material processing equipment: mixing, crushing and screening raw materials, batching accuracy ±0.5%, mixing uniformity ≥98%, screen mesh number 20-100 mesh; Glass kiln: heat the raw materials to 1200℃-1500℃ to melt; Annealing furnace: linear annealing, divided into four zones, temperature accuracy ±5°C, heating power 50-80kW, cooling rate 2-6°C / min; Testing equipment: to test product quality during and after the production process; Packaging equipment: Packaging products with a variety of materials.

7. The equipment system for producing square flat bottles according to claim 6, characterized in that: The mixing uniformity of the raw material processing equipment is ≥98%, and the mesh size of the screen is 20-100 meshes.

8. The equipment system for producing square flat bottles according to claim 6, characterized in that: The speed of the molding die turning mechanism is 1-3 revolutions per second, and the pressure of the blowing device is 0.2-0.8 MPa.

9. The equipment system for producing square flat bottles according to claim 6, characterized in that: The annealing furnace has a heating power of 50-80 kW and a cooling rate of 2-6° C. / min.

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