An alkali-free amber glass easy to blow mold and a molding apparatus

Abstract

The application discloses an alkali-free amber glass easy to blow molding and a molding equipment, relates to the technical field of alkali-free amber glass, and the alkali-free amber glass raw material is composed of the following components in percentage by mass: 55-60% of SiO2, 0.1-5% of Al2O3, 0.1-5% of B2O3, 5-20% of CaO, 5-20% of BaO, 5-20% of ZnO, 0.1-1.5% of Fe2O3, 0.5-3.5% of TiO2, 0.1-3% of C and 0.1-3% of X2O3; wherein the total mass percentage of SiO2 and Al2O3 is 58-65%, the total mass percentage of CaO, BaO and ZnO is 26-32.5%, (CaO+BaO) / ZnO is 2.5-6, and X2O3 / TiO2 is 0.1-7.5; the alkali-free amber glass obtained by the above-mentioned ratio is not only easy to blow molding, but also has the characteristics of high chemical stability, is suitable for the storage glassware in the fields of high-end medicines, chemical reagents and the like, and only one driving cylinder is needed to combine multiple sets of molding molds in the molding equipment, so that the production cost is greatly reduced, compared with the mode that multiple driving cylinders are needed for the traditional multiple sets of molding molds.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of alkali-free amber glass, and particularly relates to alkali-free amber glass easy to be blow molded and a molding equipment. BACKGROUND

[0002] Glass bottles are widely used in beer, beverage and medicine fields as daily necessities. The molding methods of the glass bottles mainly include drawing molding and blow molding. The drawing molding is suitable for small-volume bottles, and the softened glass is cut and sealed after being drawn into a tube through mechanical traction. The blow molding is suitable for large-size bottles, and the softened glass is molded in a mold through air blowing. The blow molding includes blow-blow method and press-blow method, the former is used for small-mouth bottles, and the latter is used for wide-mouth bottles. The production of the glass bottles first needs to heat the batch material into a uniform and bubble-free glass liquid in a high-temperature tank kiln or tank furnace. Subsequently, the glass liquid is flowed into a mold through a feeding channel at 1000-1200 DEG C to be molded. The composition of the glass and the viscosity change of the molding temperature range are crucial to the molding quality.

[0003] At present, the commonly used glass bottle material is sodium-calcium glass or low-boron-silicon glass, which is easy to be molded but has poor chemical stability, and is not suitable for the storage of high-end medicines and chemical reagents, because the alkali metal ions are easy to react with the medicines to cause pollution, and the medium-boron-silicon glass and high-boron-silicon glass with high chemical stability are difficult to prepare large-size glass bottles due to high molding temperature and large viscosity. It is found in the blow molding process of the glass bottle that the existing blow molding device has high cost, for example, a glass bottle molding treatment equipment and method disclosed in CN118388115A needs one drive to drive the opening and closing of each mold, and the operation is complicated, and secondly, no cooling measures are taken after the glass is molded, so that the glass bottle solution solidification molding is very slow. SUMMARY

[0004] To solve the problems in the background art, the application provides an alkali-free amber glass easy to be blow molded and a molding equipment.

[0005] The object of the application can be achieved by the following technical scheme.

[0006] An alkali-free amber glass easy to be blow molded and a molding equipment are prepared by the following steps.

[0007] S1, the alkali-free amber glass raw materials composed according to a specific proportion are weighed and mixed, and a colorant is added and uniformly stirred;

[0008] S2, the mixed raw materials are sent into a glass melting furnace to be melted at a high temperature of more than 1400 DEG C. In the melting process, the coloring effect of Fe2O3 and TiO2 is controlled by adjusting the oxidation-reduction atmosphere in the melting furnace and utilizing the reducing property of C to obtain the required amber color.

[0009] S3, the molten glass liquid flows into the material drop in front of the forming mold through the feeding channel, the temperature of the glass liquid should be controlled within the range suitable for blow molding, and blow molding is carried out through the blow molding equipment to shape the required shape;

[0010] S4, the formed glass needs to be annealed to eliminate internal stress and prevent cracking.

[0011] As a further preferred embodiment of the present technical solution: the alkali-free amber glass raw material comprises, by mass percentage: 55%-60% of SiO2, 0.1%-5% of Al2O3, 0.1%-5% of B2O3, 5%-20% of CaO, 5%-20% of BaO, 5%-20% of ZnO, 0.1%-1.5% of Fe2O3, 0.5%-3.5% of TiO2, 0.1%-3% of C, and 0.1%-3% of X2O3.

[0012] Among them, the total mass percentage of SiO2+Al2O3 is 58%-65%, the total mass percentage of CaO+BaO+ZnO is 26%-32.5%, and (CaO+BaO) / ZnO is 2.5-6, and X2O3 / TiO2 is 0.1-7.5.

[0013] As a further preferred embodiment of the present technical solution: the SiO2 is introduced from low-iron silica sand, with Fe2O3≤0.008wt%, and the particle size range is: +0.6mm≤1%, 0.6mm-0.425mm<9.8%, 0.425mm-0.1mm≥85%, -0.1mm<5%, and the moisture content is 2%-5%.

[0014] As a further preferred embodiment of the present technical solution: the X2O3 is one or more of Bi2O3, La2O3, and Y2O3.

[0015] As a further preferred embodiment of the present technical solution: the blow molding equipment in step S3 includes a workbench and a blow molding assembly detachably mounted on the workbench through a third fixing frame, and further includes

[0016] An intermittent feeding mechanism is arranged at the lower end of the workbench and is used to drive the rotating table arranged at the upper end of the intermittent feeding mechanism to rotate intermittently for feeding;

[0017] A clamping mechanism is arranged above the workbench and is used to drive two mutually cooperating forming molds to close, and the clamping mechanism includes an automatic reset assembly for automatic mold opening.

[0018] As a further preferred of the technical solution: the clamping mechanism further comprises a fixed shaft, and an annular support frame arranged on the fixed shaft, a plurality of slide rails arranged in an annular array are arranged on the annular support frame, a first sliding block is slidably connected to the inner side of each slide rail, a connecting shaft is arranged on the upper end of the first sliding block, a first connecting rod and a second connecting rod are rotatably connected to the upper end of the connecting shaft, and the first connecting rod and the second connecting rod are arranged in a staggered manner and are rotatably connected, and a second sliding block is fixedly connected to the upper end of each of the first connecting rod and the second connecting rod.

[0019] As a further preferred of the technical solution: the automatic reset assembly comprises a fixed seat arranged on the slide rail, and a second rotating shaft rotatably connected to the fixed seat, a limiting plate is fixedly connected to the second rotating shaft, an inclined limiting block is arranged on the lower end of the limiting plate, an limiting groove is arranged on the first sliding block for cooperation with the limiting block, a second reset spring is arranged on the slide rail for resetting the first sliding block, an inclined triangular block is arranged on the upper end of the limiting plate, and a first reset spring is fixedly connected to the lower end of the limiting plate, and the end of the first reset spring away from the limiting plate is fixedly connected to the slide rail.

[0020] The automatic reset assembly further comprises a first fixed frame fixedly connected to the workbench, and a baffle arranged on the first fixed frame and inclined for cooperation with the triangular block.

[0021] As a further preferred of the technical solution: the clamping mechanism further comprises a fixed block arranged on the upper surface of the workbench, a cylinder is detachably installed on the fixed block, a push block is fixedly connected to the output end of the cylinder and arranged in close contact with the annular support frame or the first sliding block, and the surface of the push block close to the annular support frame or the first sliding block is arc-shaped.

[0022] As a further preferred of the technical solution: the intermittent feeding mechanism comprises a drive shaft rotatably connected to the lower end of the workbench, and a rotating disc fixedly installed on the drive shaft, a connecting frame is rotatably connected to the lower end of the rotating disc, a groove wheel is rotatably connected to the end of the connecting frame away from the rotating disc, a lever is eccentrically arranged on the rotating disc for driving the groove wheel to rotate, an incomplete disc is further arranged on the rotating disc for cooperation with the groove wheel, a first rotating shaft is rotatably connected to the workbench, a rotating table is fixedly connected to the upper end of the first rotating shaft, and a sliding groove for sliding a plurality of second sliding blocks is arranged on the rotating table.

[0023] Further comprising a driving mechanism for driving the drive shaft to rotate.

[0024] As a further preferred embodiment of this technical solution: the workbench is fixedly connected to a second fixing frame, and a fan for blowing air for cooling is detachably installed on the second fixing frame.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In this invention, the forming temperature of amber glass is reduced, ensuring that the glass material properties are easy to form by blowing, reducing the difficulty of the blowing process, and at the same time greatly improving the chemical stability of the glass.

[0027] 2. In this invention, multiple sets of molding dies can be closed by only one drive cylinder, which greatly reduces production costs compared to the traditional method of multiple sets of molding dies requiring multiple drives.

[0028] 3. In this invention, after the alkali-free amber glass is blown into shape, the mold can be opened automatically without human intervention or system control, making the operation simple.

[0029] 4. In this invention, after the alkali-free amber glass is blown into shape, the solidification time of the blown alkali-free amber glass is reduced by blowing air through a fan, thereby improving the quality of the blown alkali-free amber glass. Attached Figure Description

[0030] Figure 1 A three-dimensional structural diagram of the blow molding equipment;

[0031] Figure 2 for Figure 1 Schematic diagram of local three-dimensional structure Figure 1 ;

[0032] Figure 3 for Figure 1 Schematic diagram of local three-dimensional structure Figure 2 ;

[0033] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0034] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0035] Figure 6 for Figure 2 Enlarged view of point C in the middle;

[0036] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 3 .

[0037] The drawing illustrates: 1, workbench; 2, intermittent feeding mechanism; 21, driving shaft; 22, rotating disc; 23, incomplete disc; 24, shifting lever; 25, connecting frame; 26, grooved wheel; 27, No. 1 rotating shaft; 3, clamping mechanism; 31, fixed shaft; 32, annular support frame; 33, sliding rail; 34, No. 1 sliding block; 341, limiting groove; 35, automatic reset assembly; 351, fixed seat; 352, No. 2 rotating shaft; 353, limiting plate; 354, limiting block; 355, No. 1 reset spring; 356, No. 1 fixed frame; 357, baffle; 358, triangular block; 359, No. 2 reset spring; 36, connecting shaft; 37, No. 1 connecting rod; 38, No. 2 connecting rod; 39, No. 2 sliding block; 310, fixed block; 311, air cylinder; 312, push block; 4, forming die; 5, rotating table; 51, sliding groove; 6, No. 2 fixed frame; 7, fan; 8, No. 3 fixed frame; 9, blowing assembly. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0039] An alkali-free amber glass easy to be blow molded and a molding device are made by the following steps:

[0040] S1, weighing and mixing alkali-free amber glass raw materials composed according to specific proportions, adding colorant and stirring uniformly;

[0041] S2, sending the mixed raw materials into a glass melting furnace to be melted at a high temperature exceeding 1400℃, in the melting process, adjusting the oxidation-reduction atmosphere in the melting furnace and using the reducing property of C to control the coloring effect of Fe2O3 and TiO2 to obtain the required amber color;

[0042] S3, flowing the melted glass liquid into a material drop in front of a forming die through a feeding channel, controlling the temperature of the glass liquid in a range suitable for blow molding, and blow molding through a blow molding device to shape as required;

[0043] S4, the molded glass needs to be annealed to eliminate internal stress and prevent cracking;

[0044] The alkali-free amber glass raw material comprises, in percentage by mass, 55-60% of SiO2, 0.1-5% of Al2O3, 0.1-5% of B2O3, 5-20% of CaO, 5-20% of BaO, 5-20% of ZnO, 0.1-1.5% of Fe2O3, 0.5-3.5% of TiO2, 0.1-3% of C and 0.1-3% of X2O3; wherein the total amount of SiO2+Al2O3 is 58-65% in percentage by mass, it is to be noted that SiO2 is a glass former and is a component constituting the glass framework, Al2O3 is an intermediate oxygenated compound, controlling the total amount of SiO2+Al2O3 to be 58-65% in percentage by mass helps to enhance the compactness of the glass network structure, improve the chemical stability of the glass, and the viscosity will not be too high, which is conducive to blow molding, B2O3 can reduce the brittleness of the glass and improve the chemical stability of the glass, and B2O3 is also a good fluxing agent, which can greatly reduce the glass melting temperature and is beneficial to the glassification process, the total amount of CaO+BaO+ZnO is 26-32.5% in percentage by mass, and (CaO+BaO) / ZnO is 2.5-6, it is to be noted that the glass does not contain alkali metal oxides, which causes great difficulty in melting and molding, therefore, the content of alkaline earth metal oxides is increased, the mixture containing CaO+BaO components can significantly reduce the liquidus temperature of the glass, improve the glass melting performance and promote molding, and the total amount that is too low will result in insufficient effect, and the total amount that is too high will cause the glass to crystallize, and the addition of ZnO can improve the melting performance, ZnO has a tetrahedral structure and good thermal conductivity, which can improve the melting quality of the glass, improve the uniformity of the glass, and improve the chemical stability and thermal stability of the glass, but for the main components, ZnO is a low amount element, therefore, the proportion of ZnO needs to be limited to achieve the optimal ratio, so as to avoid the problem of insufficient hardness of the glass caused by the excessive tetrahedral structure and insufficient filler, therefore, (CaO+BaO) / ZnO is controlled to be 2.5-6, X2O3 / TiO2 is 0.1-7.5, and X2O3 is one or more of Bi2O3, La2O3 and Y2O3, iron-titanium coloring is adopted to achieve the amber color of the glass, but the introduction of TiO2 and the high content of alkaline earth metal cause the glass to crystallize, therefore, one or more of Bi2O3, La2O3 and Y2O3 is introduced, and X2O3 / TiO2 is limited to 0.5-6.5, which improves the anti-crystallization performance and chemical stability of the glass and prevents the glass from crystallizing, it is to be noted that;

[0045] The SiO2 of the formula is introduced by low-iron silica sand, Fe2O3≤0.008wt%, the particle size range is: +0.6mm≤1%, 0.6mm-0.425mm<9.8%, 0.425mm-0.1mm≥85%, -0.1mm<5%, and the moisture content is 2%-5%, wherein the particle size range is to facilitate the melting of the glass liquid and provide a basis for good forming; the moisture is to provide a suitable redox atmosphere, help glass coloring, and improve the uniformity of coloring; the amber glass viscosity at the working point (Tw) of 103Pa·s is ≤1005°C, the amber glass viscosity at the flame processing temperature (T2) of 102Pa·s is ≤1170°C, the polishing temperature interval range ΔT of the amber glass viscosity at 102.7-3.2Pa·s is 47°C-74°C, wherein by controlling the proportion range of alkaline earth metal oxides, Bi2O3, La2O3, and Y2O3 are introduced to reduce the blow molding interval temperature (T w , T2), and the polishing temperature interval range is controlled at 47-74°C, because too long glass frit will cause the glass bottle to be unable to be formed, and too short glass frit will cause the glass bottle to harden too quickly, resulting in faults, cracking, etc., the color tone of the amber glass is 4mm in thickness, Y is 17-29%, λd is 581-586, and Pe>90%, and the alkali leaching of the amber glass is ≤0.08mL;

[0046] According to the composition, the amber glass is prepared, and the composition and performance of the obtained glass samples of examples one to six and comparative examples one to two are shown in table 1, and the high-temperature viscosity is tested according to “ASTM C-965” using a rotary high-temperature viscometer, and the alkali leaching is tested according to the standard of the particle method in “GBT 4771-2015” as follows:

[0047] Table 1 Composition and performance of examples one to six and comparative examples one to two

[0048]

[0049]

[0050] In summary, examples one to eight, comparative examples one and two can see that the glass, Y is 17-29%, λ d is 581-586, and Pe>90%, the coloring is amber, and the viscosity characteristic point T w≤1005℃, T2≤1170℃, ΔT is 47-74℃, alkali dissolution is ≤0.08 mL; while the comparative example one does not introduce Bi2O3, La2O3, Y2O3, the comparative example two does not control the alkali earth metal oxide component and the proportion, the viscosity characteristic point and the chemical stability of the two are worse than the comparative example, thus it can be seen that the amber glass of the application reduces the forming temperature, ensures that the glass material interval is easy to blow molding, reduces the process difficulty of the blow molding method, and greatly improves the chemical stability of the glass.

[0051] Example seven:

[0052] On the basis of the above examples, as Figures 1-7 shown, the blow molding equipment in step S3 includes a workbench 1 and a blow assembly 9 detachably installed on the workbench 1 through a No. 3 fixing frame 8, and further includes an intermittent feeding mechanism 2 arranged at the lower end of the workbench 1 and used to drive the intermittent rotation feeding of a rotating table 5 arranged at the upper end of the intermittent feeding mechanism 2; a clamping mechanism 3 arranged above the workbench 1 and used to drive the clamping of two mutually cooperating molding dies 4, and the clamping mechanism 3 includes an automatic reset assembly 35 used to automatically open the mold.

[0053] The clamping mechanism 3 further includes a fixed shaft 31 and an annular support frame 32 arranged on the fixed shaft 31, the fixed shaft 31 is fixedly arranged on a No. 1 rotating shaft 27, the annular support frame 32 is arranged with a plurality of slide rails 33 arranged in an annular array, each slide rail 33 is slidably connected with a No. 1 sliding block 34 arranged inside, a connecting shaft 36 is arranged at the upper end of the No. 1 sliding block 34, a No. 1 connecting rod 37 and a No. 2 connecting rod 38 are rotatably connected at the upper end of the connecting shaft 36, and the No. 1 connecting rod 37 and the No. 2 connecting rod 38 are arranged in a staggered manner and are rotatably connected, a No. 2 sliding block 39 is fixedly connected at the upper end of each of the No. 1 connecting rod 37 and the No. 2 connecting rod 38, and the molding dies 4 are fixedly connected at the upper end of the No. 2 sliding block 39, and the two molding dies 4 arranged in pairs are symmetrically arranged; the clamping mechanism 3 further includes a fixed block 310 arranged on the upper surface of the workbench 1, a cylinder 311 is detachably installed on the fixed block 310, a push block 312 is fixedly connected at the output end of the cylinder 311 and arranged in close contact with the annular support frame 32 or the No. 1 sliding block 34, and one side of the push block 312 close to the annular support frame 32 or the No. 1 sliding block 34 is an arc surface.

[0054] Specifically, first, by adding the molten glass liquid to the two shaped molds 4 directly above the cylinder 311, in this process, the cylinder 311 needs to be started to drive the push block 312 to push the first sliding block 34 to slide in the slide rail 33, the first sliding block 34 drives the connecting shaft 36 on it to move, and then the first connecting rod 37 and the second connecting rod 38 rotate and the included angle becomes smaller, the first connecting rod 37 and the second connecting rod 38 drive the second sliding block 39 on them to slide in the corresponding sliding groove 51, and the directions of the second sliding blocks 39 on the first connecting rod 37 and the second connecting rod 38 are opposite, so that the two matched shaped molds 4 are combined together, then the cylinder 311 is started to drive the push block 312 to reset, and only one driving cylinder 311 can combine the multiple groups of shaped molds 4, compared with the traditional multiple groups of shaped molds 4 which need multiple driving modes, the production cost is greatly reduced.

[0055] The automatic reset assembly 35 comprises a fixed seat 351 arranged on the slide rail 33, a second rotating shaft 352 rotatably connected to the fixed seat 351, a limiting plate 353 fixedly connected to the second rotating shaft 352, a limiting block 354 with an inclined bottom surface arranged at the lower end of the limiting plate 353, a limiting groove 341 arranged on the first sliding block 34 and matched with the limiting block 354, a second reset spring 359 arranged on the slide rail 33 and used for resetting the first sliding block 34, a triangular block 358 with an inclined top surface arranged at the upper end of the limiting plate 353, a first reset spring 355 fixedly connected to the lower end of the limiting plate 353, and the end of the first reset spring 355 away from the limiting plate 353 fixedly connected to the slide rail 33. The automatic reset assembly 35 further comprises a first fixed frame 356 fixedly connected to the workbench 1, and a baffle 357 arranged on the first fixed frame 356 and matched with the triangular block 358 and arranged in an inclined manner.

[0056] Specifically, during the closing of the two cooperating forming molds 4, that is, when the push block 312 pushes the first sliding block 34 to slide in the sliding rail 33, since the limiting block 354 below the limiting plate 353 is arranged in an inclined manner, the limiting plate 353 close to one end of the first sliding block 34 will be lifted during the movement of the first sliding block 34, until the limiting block 354 moves to the position directly above the limiting groove 341, and under the elastic force of the first return spring 355, the limiting block 354 is clamped into the inside of the limiting groove 341, thus achieving the feeding until the blowing assembly 9, which is a prior art, is used only for the blowing assembly 9. During the blowing process of the blowing assembly 9, the two cooperating forming molds 4 always maintain a locked state, which provides a basic guarantee for the blowing assembly 9 to blow and form the glass raw materials in the two forming molds 4; after the blowing assembly 9 blows and forms the glass directly below, the rotating table 5 and the forming mold 4 above the rotating table 5 are driven to rotate again by starting the intermittent feeding mechanism 2. During the rotation, since there is a triangular block 358 arranged in an inclined manner above the limiting plate 353, the triangular block 358 will contact the baffle 357 and press the limiting plate 353 away from one end of the first sliding block 34, so that the limiting block 354 is separated from the inside of the limiting groove 341, thereby realizing that after the blowing assembly 9 blows and forms the glass in the two forming molds 4, the two forming molds 4 are automatically opened, and no manual or system control is required to automatically open the mold, which is simple to operate.

[0057] Embodiment eight:

[0058] On the basis of embodiment seven, the intermittent feeding mechanism 2 comprises a driving shaft 21 rotatably connected to the lower end of the workbench 1, and a rotating disc 22 fixedly installed on the driving shaft 21. The lower end of the rotating disc 22 is rotatably connected to a connecting frame 25, and the end of the connecting frame 25 away from the rotating disc 22 is rotatably connected to a grooved wheel 26. The rotating disc 22 is eccentrically provided with a lever 24 for driving the grooved wheel 26 to rotate. The rotating disc 22 is also provided with an incomplete disc 23 which can be used in cooperation with the grooved wheel 26. The grooved wheel 26 is provided with a first rotating shaft 27 rotatably connected to the workbench 1, and the upper end of the first rotating shaft 27 is fixedly connected to a rotating table 5. The rotating table 5 is provided with a plurality of sliding grooves 51 for sliding a plurality of second sliding blocks 39. The intermittent feeding mechanism 2 also comprises a driving mechanism for driving the driving shaft 21 to rotate.

[0059] Specifically, through the driving mechanism, specifically a rotating driving motor, the rotating driving motor drives the driving shaft 21 to rotate, the driving shaft 21 drives the rotating disc 22 to rotate, the rotating disc 22 drives the incomplete disc 23 and the push rod 24 thereon to rotate, the push rod 24 can drive the grooved wheel 26 to rotate, the grooved wheel 26 drives the rotating table 5 thereon to rotate, the rotating table 5 drives the two forming molds 4 filled with the molten glass and combined to move to the position directly below the blowing assembly 9, so that the blowing assembly 9 is blown and formed, and after the blowing and forming, the rotating table 5 rotates by a quarter of a circumferential track to move to the position directly below the fan 7, and then the rotating table 5 can rotate by a quarter of a circumferential track again, since the grooved wheel 26 is provided with only four grooves, for better description, the description is made according to the four grooves, and the glass is transferred to the next process by the external mechanical hand, and it needs to be noted that the incomplete disc 23 is arranged to limit the rotation of the grooved wheel 26 when the push rod 24 is separated from the grooved wheel 26, and prevent the self-rotation of the grooved wheel 26, and the number of the grooves on the grooved wheel 26 can be arranged according to the number of the two forming molds 4 above which cooperate with each other.

[0060] Embodiment Nine

[0061] On the basis of Embodiment Seven, the workbench 1 is fixedly connected with the second fixing frame 6, and the fan 7 for blowing and cooling is detachably installed on the second fixing frame 6.

[0062] Specifically, when the glass is blown and formed and the two forming molds 4 move to the position directly below the fan 7, the two forming molds 4 cooperate with each other in the open mold state, the blowing of the fan 7 is used to reduce the temperature of the glass, so as to accelerate the solidification of the glass liquid and avoid the softening of the glass liquid, thereby affecting the quality of the glass.

[0063] The above embodiments are only used to illustrate the technical method of the present application but not limit the present application, although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. A method for preparing alkali-free amber glass that is easy to blow into shape, characterized in that: Includes the following steps: S1. Weigh and mix the alkali-free amber glass raw materials in a specific ratio, and add the colorant and stir evenly. The alkali-free amber glass raw material is composed of the following components by mass percentage: 55%-60% SiO2, 0.1%-5% Al2O3, 0.1%-5% B2O3, 5%-20% CaO, 5%-20% BaO, 5%-20% ZnO, 0.1%-1.5% Fe2O3, 0.5%-3.5% TiO2, 0.1%-3% C, and 0.1%-3% X2O. 3； The total mass percentage of SiO2+Al2O3 is 58%-65%, the total mass percentage of CaO+BaO+ZnO is 26%-32.5%, and the ratio of (CaO+BaO) / ZnO is 2.5-6, while the ratio of X2O3 / TiO2 is 0.1-7.

5. The X2O3 mentioned is one or more of Bi2O3, La2O3, and Y2O3; S2. The mixed raw materials are fed into a glass melting furnace and melted at a high temperature of over 1400℃. During the melting process, the coloring effect of Fe2O3 and TiO2 is controlled by adjusting the redox atmosphere in the melting furnace and utilizing the reducing properties of C to obtain the desired amber color. S3. The molten glass flows into the droplet before the forming mold through the feeding channel. The temperature of the molten glass should be controlled within a suitable range for blowing. The glass is then blown into the desired shape using a blowing molding machine. S4. The formed glass needs to be annealed to eliminate internal stress and prevent cracking.

2. The method for preparing easily blown alkali-free amber glass according to claim 1, characterized in that, The SiO2 It is introduced from low-iron silica sand, with Fe2O3≤0.008wt%, and particle size range: +0.6 mm≤1%, 0.6mm-0.425mm<9.8%, 0.425mm-0.1mm≥85%, -0.1mm<5%, and moisture content of 2%-5%.

3. The method for preparing easily blown alkali-free amber glass according to claim 1, characterized in that, The blow forming equipment described in step S3 includes a worktable (1) and a blow forming assembly (9) detachably mounted on the worktable (1) via a third fixing frame (8), and also includes Intermittent feeding mechanism (2) is located at the lower end of the workbench (1) and is used to drive the rotating table (5) located at the upper end of the intermittent feeding mechanism (2) to rotate intermittently to feed materials; The clamping mechanism (3) is located above the workbench (1) and is used to drive the two cooperating molding dies (4) to close. The clamping mechanism (3) includes an automatic reset component (35) for automatic mold opening. The clamping mechanism (3) further includes a fixed shaft (31) and an annular support frame (32) provided on the fixed shaft (31). The annular support frame (32) is provided with a plurality of slide rails (33) arranged in an annular array. Each slide rail (33) is slidably connected to a first slider (34) on its inner side. The first slider (34) is provided with a connecting shaft (36) at its upper end. The upper end of the connecting shaft (36) is rotatably connected to a first connecting rod (37) and a second connecting rod (38). The first connecting rod (37) and the second connecting rod (38) are staggered and rotatably connected. A second slider (39) is fixedly connected to the upper end of each first connecting rod (37) and the second connecting rod (38). The automatic reset assembly (35) includes a fixed seat (351) disposed on a slide rail (33) and a second rotating shaft (352) rotatably connected to the fixed seat (351). A limit plate (353) is fixedly connected to the second rotating shaft (352). A limit block (354) with an inclined bottom surface is provided at the lower end of the limit plate (353). A limit groove (341) that cooperates with the limit block (354) is provided on the first slider (34). A second reset spring (359) for resetting the first slider (34) is provided on the slide rail (33). A triangular block (358) with an inclined top surface is provided at the upper end of the limit plate (353). A first reset spring (355) is fixedly connected to the lower end of the limit plate (353). The end of the first reset spring (355) away from the limit plate (353) is fixedly connected to the slide rail (33). The automatic reset assembly (35) also includes a first fixing frame (356) fixedly connected to the workbench (1), and the first fixing frame (356) is provided with a baffle (357) that works in conjunction with the triangular block (358) and is arranged at an angle.

4. The method for preparing easily blown alkali-free amber glass according to claim 3, characterized in that, The clamping mechanism (3) also includes a fixing block (310) disposed on the upper surface of the workbench (1). A cylinder (311) is detachably mounted on the fixing block (310). The output end of the cylinder (311) is fixedly connected to a push block (312) that fits against the annular support frame (32) or the first slider (34). The side of the push block (312) close to the annular support frame (32) or the first slider (34) is an arc surface.

5. The method for preparing easily blown alkali-free amber glass according to claim 4, characterized in that, The intermittent feeding mechanism (2) includes a drive shaft (21) rotatably connected to the lower end of the worktable (1) and a rotating disk (22) fixedly installed on the drive shaft (21). A connecting frame (25) is rotatably connected to the lower end of the rotating disk (22). A grooved wheel (26) is rotatably connected to the end of the connecting frame (25) away from the rotating disk (22). A lever (24) for turning the grooved wheel (26) is eccentrically provided on the rotating disk (22). An incomplete disk (23) that can cooperate with the grooved wheel (26) is also provided on the rotating disk (22). A first rotating shaft (27) rotatably connected to the worktable (1) is provided on the grooved wheel (26). A rotating platform (5) is fixedly connected to the upper end of the first rotating shaft (27). A sliding groove (51) for sliding multiple second sliders (39) is provided on the rotating platform (5). It also includes a drive mechanism for driving the drive shaft (21) to rotate.

6. The method for preparing easily blown alkali-free amber glass according to claim 5, characterized in that, The workbench (1) is fixedly connected to a second fixed frame (6), and a fan (7) for blowing air cooling is detachably installed on the second fixed frame (6).

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