A method for manufacturing a double-layer structure glass bottle

Abstract

The application discloses a kind of preparation methods of double-layer structure glass bottle, it is related to glass bottle preparation technical field, by the glass of two raw material compositions is high-temperature melting, shaping and annealing, it is prepared into the particle of the particle size range 1~100 μm, with photo initiator, photosensitive resin is mixed to prepare to obtain slurry, two kinds of slurry are printed out double-layer glass bottle shape by 3D printing equipment, and the glass bottle with double-layer structure is obtained by being carried out to the slurry of debinding, sintering, can provide multiple performance for glass bottle, such as being able to change glass bottle shape, solve the problem that glass bottle forming is difficult, in addition, compared with the way of increasing glass bottle performance by plating film, double-layer glass structure glass bottle has one-step forming, and the performance of glass is more stable than film layer, long-term storage reagent also does not have the advantages of metamorphic, reduces the cumbersome process of plating film, significantly improves production efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass bottle preparation, and particularly relates to a preparation method of a double-layer structure glass bottle. BACKGROUND

[0002] Glass bottles are traditional packaging containers, which are used for packaging beverages, wine, chemicals, medicines and the like. The glass bottles have stable chemical properties, good barrier property and sealing property, and can effectively protect the contents from the influence of the external environment. Higher requirements are put forward for the performance of the glass bottles according to the requirements of the application field, and therefore a single glass composition is difficult to meet the requirements of multiple performances. Therefore, coating a film on the glass bottle is a common means, and the optical, thermal and electromagnetic properties of the glass bottle are changed by coating a metal or other compound film on the surface of the glass, so as to meet the specific use requirements.

[0003] The microelectronic industry reagent has extremely high requirements for the precipitation of metal ions and other impurities of the packaging material, and the glass material has excellent optical, mechanical, thermal stability, chemical stability and the like, and is an excellent material for storing and packaging the microelectronic industry reagent. Since the microelectronic industry reagent is easy to react with alkali metals, the storage condition of the glass storage bottle has high requirements for the precipitation of metal ions. The surface of the glass bottle is treated, for example, a functional film is plated on the inner surface of the glass bottle, so that the glass bottle can meet the performance required by the application environment and meet the storage condition of the reagent. Since the glass storage bottle has large volume, heavy quality and special shape (especially some special-shaped parts of the bottle mouth), it is difficult to coat a film. The current industrialized glass bottle coating has the disadvantages of low energy utilization efficiency, low processing efficiency, weak film layer adhesion and the like.

[0004] Therefore, the double-layer structure glass bottle can be printed by the 3D printing equipment to solve the above-mentioned defects. However, there are still some problems in the printing process of the 3D printing equipment. Since the discharge port of the printing spray head in the 3D printing equipment is relatively small, the glass paste is easy to block the discharge port, and the solidified glass paste is easy to adhere to the end of the printing spray head, and long-term accumulation is easy to cause uneven spraying, thereby affecting the quality of the prepared glass bottle. SUMMARY

[0005] To solve the problems in the background art, the application provides a preparation method of a double-layer structure glass bottle.

[0006] The object of the application can be achieved by the following technical scheme.

[0007] The preparation method of the double-layer structure glass bottle comprises the following steps.

[0008] S1. Weigh the two glass raw materials according to the composition, mix them evenly and put them into a platinum crucible for high-temperature melting. After holding the temperature, take the glass liquid out of the high-temperature furnace and pour it into the mold to form a shape. Then, transfer the cast glass to an annealing furnace for annealing and then cool it to room temperature with the furnace.

[0009] S2. The obtained glass is crushed and ground to obtain glass powder, which is prepared into particles with a particle size range of 1 to 100 μm. The powder is then mixed with a photoinitiator and a photosensitive resin to prepare a slurry.

[0010] S3. Using 3D printing equipment, two slurries are printed into the shape of a double-layered glass bottle, which is then degreased and sintered to obtain a glass bottle with a double-layered structure.

[0011] As a further preferred embodiment of this technical solution: the glass raw material composition described in S1 is: 75wt% SiO2, 5wt% Al2O3, 15wt% B2O3, 3.2wt% Na2O, 1.2wt% K2O, 0.3wt% NaCl, 0.2wt% CeO2 and 0.1wt% SnO;

[0012] Another glass composition: 70 wt% SiO2, 2.2 wt% Al2O3, 5.8 wt% B2O3, 11 wt% Na2O, 0.8 wt% K2O, 8.5 wt% CaO, 0.6 wt% MgO, 0.3 wt% Fe2O3 and 0.8 wt% C.

[0013] As a further preferred embodiment of this technical solution: the temperature at which the platinum crucible melts the glass is 1500℃~1600℃, and the holding time after melting is 2h; the temperature in the annealing furnace is 500℃~550℃, and the annealing time is 2h.

[0014] As a further preferred embodiment of this technical solution: the mass ratio of glass particles: photoinitiator: photosensitive resin in S2 is 90:0.8:9.2.

[0015] As a further preferred embodiment of this technical solution: the degreasing temperature in S3 is 450℃~550℃, and the vacuum sintering temperature of the glass bottle after degreasing is 1000℃~1100℃.

[0016] As a further preferred embodiment of this technical solution: the 3D printing equipment includes a 3D printing machine main frame and a 3D printing nozzle, a moving mechanism is mounted on the 3D printing machine main frame, a fixed base is provided on the moving mechanism, and further includes...

[0017] The heating component is set on the main frame of the 3D printer and is used to fit around the outer wall of the 3D printing nozzle to heat it, so that the solidified paste inside the 3D printing nozzle softens.

[0018] A rotating component, mounted on the heating component, is used to rotate to a position below the 3D printing nozzle;

[0019] A reciprocating component, mounted on the rotating component, is used to clean the slurry clogging the inside of the 3D printing nozzle;

[0020] The waste collection component is located below the reciprocating component and is used to intercept the slurry falling through the through hole of the reciprocating component;

[0021] The wiping component, mounted on the reciprocating component, is used to clean the solidified paste on the outer wall of the 3D printing nozzle.

[0022] As a further preferred embodiment of this technical solution: the heating component includes a first sprocket fixedly connected to the output end of a first drive motor, and the first drive motor is fixedly connected to the main frame of the 3D printing machine. The first sprocket meshes with a second sprocket. A connecting frame is fixedly connected to the first sprocket and the second sprocket respectively, and the two connecting frames are rotatably connected to the main frame of the 3D printing machine. An electric heating plate is fixedly connected to each connecting frame.

[0023] The rotating assembly includes a first bevel gear fixedly connected to a second spur gear, the first bevel gear meshing with the second bevel gear, and a rotating shaft fixedly connected inside the second bevel gear, and the rotating shaft being rotatably connected to the main frame of the 3D printing machine.

[0024] As a further preferred embodiment of this technical solution: the reciprocating assembly includes a second drive motor and a fixed frame. The output end of the second drive motor is fixedly connected to a drive shaft. An inclined disk is fixedly connected to the upper end of the drive shaft. The fixed frame is fixedly connected to a rotating shaft, and a guide rail is fixedly connected to the end of the fixed frame away from the rotating shaft. A guide shaft is fixedly connected inside the guide rail. A slider is fixedly connected to the guide shaft, and a spring is sleeved on the outer side of the guide shaft. The spring is disposed between the guide rail and the slider. A second connecting shaft is fixedly connected to the slider. A first connecting shaft is fixedly connected to the second connecting shaft. A ball bearing that fits against the disk is disposed at the lower end of the first connecting shaft. A connecting seat is also fixedly connected to the second connecting shaft, and a through-hole needle is fixedly connected to the connecting seat.

[0025] As a further preferred embodiment of this technical solution: the waste collection assembly includes a connecting rod fixedly connected to the rotating shaft, a waste slag trough fixedly connected to the end of the connecting rod away from the rotating shaft, a second drive motor fixedly connected to the connecting rod, and the waste slag trough positioned directly below the through-hole needle.

[0026] As a further preferred embodiment of this technical solution: the wiping assembly includes a third connecting shaft fixedly connected to a second connecting shaft, a mounting shell fixedly connected to the third connecting shaft, a base provided inside the mounting shell, an external thread provided on the base, and a threaded groove provided on the inner wall of the mounting shell that mates with the external thread, and a wiping block provided at the upper end of the base.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. In this invention, a double-layer glass bottle is prepared by 3D printing equipment, which can provide the glass bottle with a variety of properties. For example, the shape of the glass bottle can be changed, which solves the problem of the difficulty of glass bottle forming. In addition, compared with the method of increasing the performance of glass bottles by coating, the double-layer glass bottle has the advantages of one-step forming, and the glass is more stable than the film layer. It will not deteriorate even after long-term storage of reagents. It also eliminates the cumbersome coating process and significantly improves production efficiency.

[0029] 2. In this invention, the heating component can heat the spray nozzle to soften the solidified slurry inside, while the reciprocating component controls the up-and-down reciprocating motion of the through-hole needle to clean the slurry outlet of the 3D printing spray nozzle and remove the blocked slurry. The operation is simple.

[0030] 3. In this invention, while the spray head moves up and down, the solidified slurry adhering to the end of the spray head is automatically cleaned by the wiping block. This automated maintenance process not only reduces manual intervention and operational complexity, but also ensures the continuous cleanliness of the spray head. In addition, the detachable wiping block makes it easy to replace the worn wiping block.

[0031] 4. In this invention, the waste residue tank can catch the waste slurry that falls off when the through-hole needle passes through the hole and the wiping block can clean up the waste slurry that falls off, thus avoiding the problem of it falling onto the printing table and being difficult to clean. Attached Figure Description

[0032] Figure 1 This is a graph showing the test results of metal ion precipitation in this invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the 3D printing equipment in this invention;

[0034] Figure 3 for Figure 2 Schematic diagram of local three-dimensional structure Figure 1 ;

[0035] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0036] Figure 5 for Figure 2Schematic diagram of local three-dimensional structure Figure 2 ;

[0037] Figure 6 for Figure 2 Schematic diagram of local three-dimensional structure Figure 3 ;

[0038] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B;

[0039] Figure 8 for Figure 2 Schematic diagram of local three-dimensional structure Figure 4 ;

[0040] Figure 9 for Figure 2 Exploded view of a local structure.

[0041] Legend: 1. Main frame of 3D printing machine; 2. Moving mechanism; 3. Fixed base; 4. Rotating assembly; 41. First bevel gear; 42. Second bevel gear; 43. Rotating shaft; 5. Waste collection assembly; 51. Connecting rod; 52. Waste trough; 6. Heating assembly; 61. First drive motor; 62. First sprocket; 63. Second sprocket; 64. Connecting frame; 65. Electric heating plate; 7. Reciprocating assembly; 71. Second... 72. Drive motor; 73. Disk; 74. Ball; 75. Connecting shaft 1; 76. Fixing bracket; 77. Guide rail; 78. Guide shaft; 79. Slider; 710. Spring; 711. Connecting shaft 2; 712. Through-hole needle; 713. Connecting seat; 8. 3D printing nozzle; 9. Wiping assembly; 91. Connecting shaft 3; 92. Mounting shell; 93. Base; 94. External thread; 95. Wiping block. Detailed Implementation

[0042] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1 This application provides a method for preparing a double-layered glass bottle, the specific implementation steps of which are as follows:

[0044] The first type of glass used in Examples 1 to 5 below (hereinafter referred to as Glass A) is composed of the following raw materials in weight percentages: 75 wt% SiO2, 5 wt% Al2O3, 15 wt% B2O3, 3.2 wt% Na2O, 1.2 wt% K2O, 0.3 wt% NaCl, 0.2 wt% CeO2 and 0.1 wt% SnO; the second type of glass (hereinafter referred to as Glass B) is composed of the following raw materials in weight percentages: 70 wt% SiO2, 2.2 wt% Al2O3, 5.8 wt% B2O3, 11 wt% Na2O, 0.8 wt% K2O, 8.5 wt% CaO, 0.6 wt% MgO, 0.3 wt% Fe2O3 and 0.8 wt% C.

[0045] The composition of slurry A used in Examples 1 to 5 below is as follows: 450g of A glass particles, 4g of trimethylbenzoyl-xylphosphine oxide (TMO), 46g of epoxy (meth)acrylate, trimethylolpropane triacrylate, and ethylenediamine (contents of which are 4.5g, 12g, and 29.5g, respectively); the composition of slurry B is as follows: 450g of B glass particles, 4g of trimethylbenzoyl-xylphosphine oxide (TMO), 46g of epoxy (meth)acrylate, trimethylolpropane triacrylate, and ethylenediamine (contents of which are 4.5g, 12g, and 29.5g, respectively).

[0046] Example 1:

[0047] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible. Melt at 1500℃. After 2 hours of heat preservation, take the glass liquid out of the high temperature furnace and pour it into the mold. Transfer the cast glass to an annealing furnace at 500℃ for 2 hours and then cool it to room temperature with the furnace.

[0048] (2) After obtaining glass sample A, it is crushed and ground to obtain glass powder. Particles with a particle size of 50-100μm are obtained through a precision sieving system. Then, glass particles, photoinitiator and photosensitive resin are mixed according to weight to prepare slurry A.

[0049] (3) A single-layer glass bottle was obtained by printing 500g of A slurry by irradiating it layer by layer with DLP light source;

[0050] (4) The printed single-layer glass bottle is then degreased at 450°C;

[0051] (5) The degreased glass bottle is vacuum sintered at 1000℃, kept at the temperature and then cooled to room temperature to obtain a glass bottle with a single-layer structure.

[0052] Example 2:

[0053] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible. Melt at 1500℃. After 2 hours of heat preservation, take the glass liquid out of the high temperature furnace and pour it into the mold. Transfer the cast glass to an annealing furnace at 500℃ for 2 hours and then cool it to room temperature with the furnace.

[0054] (2) The A glass and B glass samples prepared were crushed and ground to obtain glass powder. Particles with a particle size of 50-100 μm were obtained by a precision sieving system. Then, the glass particles, photoinitiator and photosensitive resin were mixed according to weight to prepare A slurry and B slurry.

[0055] (3) The glass bottle with a double-layer structure is printed by irradiating it with a DLP light source layer by layer. 280g of A slurry is printed on the outer layer and 220g of B slurry is printed on the inner layer.

[0056] (4) Degrease the printed double-walled glass bottle at 450°C;

[0057] (5) The degreased glass bottle is vacuum sintered at 1000℃, kept warm and then cooled to room temperature to obtain a glass bottle with a double-layer structure.

[0058] Example 3:

[0059] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible. Melt at 1550℃. After 2 hours of heat preservation, take the glass liquid out of the high temperature furnace and pour it into the mold. Transfer the cast glass to an annealing furnace at 525℃ for 2 hours and then cool it to room temperature with the furnace.

[0060] (2) The A glass and B glass samples prepared were crushed and ground to obtain glass powder. Particles with a particle size range of 20-50 μm were obtained by a precision sieving system. Then, the glass particles, photoinitiator and photosensitive resin were mixed according to weight to prepare A slurry and B slurry.

[0061] (3) The glass bottle with a double-layer structure is printed by irradiating it with a DLP light source layer by layer. 300g of A slurry is printed on the outer layer and 200g of B slurry is printed on the inner layer.

[0062] (4) The printed double-walled glass bottle was then degreased at 500°C;

[0063] (5) The degreased glass bottle is vacuum sintered at 1050℃, kept warm and then cooled to room temperature to obtain a glass bottle with a double-layer structure.

[0064] Example 4:

[0065] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible. Melt at 1600℃. After 2 hours of heat preservation, take the glass liquid out of the high temperature furnace and pour it into the mold. Transfer the cast glass to an annealing furnace at 550℃ for 2 hours and then cool it to room temperature with the furnace.

[0066] (2) The A glass and B glass samples prepared were crushed and ground to obtain glass powder. The particles with a particle size range of less than 20 μm were obtained by a precision sieving system. Then, the glass particles, photoinitiator and photosensitive resin were mixed according to weight to prepare A slurry and B slurry.

[0067] (3) The glass bottle with a double-layer structure is printed by irradiating the outer layer with DLP light source, printing 320g of A paste on the outer layer and 180g of B paste on the inner layer.

[0068] (4) The printed double-walled glass bottle was then degreased at 550°C;

[0069] (5) The degreased glass bottle is vacuum sintered at 1100℃, kept warm and then cooled to room temperature to obtain a glass bottle with a double-layer structure.

[0070] Example 5:

[0071] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible. Melt at 1570℃. After 2 hours of heat preservation, take the glass liquid out of the high temperature furnace and pour it into the mold. Transfer the cast glass to an annealing furnace at 535℃ for 2 hours and then cool it to room temperature with the furnace.

[0072] (2) The A glass and B glass samples prepared were crushed and ground to obtain glass powder. The mixed particles with particle sizes of less than 20 μm (18%), 20-50 μm (74%), and 50-100 μm (8%) were obtained by a precision sieving system. Then, the glass particles, photoinitiator and photosensitive resin were mixed according to weight to prepare A slurry and B slurry.

[0073] (3) The glass bottle with a double-layer structure is printed by irradiating it with a DLP light source layer by layer. 300g of A slurry is printed on the outer layer and 200g of B slurry is printed on the inner layer.

[0074] (4) The printed double-walled glass bottle was then degreased at 525°C;

[0075] (5) The degreased glass bottle was vacuum sintered at 1075℃, kept warm and then cooled to room temperature to obtain a glass bottle with a double-layer structure.

[0076] In summary, Regulations 1 through 5, such as Figure 1As shown in the gold impurity precipitation test of Example 1, it can be seen that the precipitation of Na ions is greater than 0.1 ppb, indicating that the metal ion precipitation after using A-component glass 3D printing alone cannot meet the requirements for holding reagents. However, the precipitation of B, Na, K, Ca, and Mg ions in Examples 2 to 5 is less than 0.1 ppb, indicating that the use of a double-layer glass structure can effectively suppress the precipitation of metal ions, enabling the glass bottle to meet the requirements for holding reagents.

[0077] Example 6:

[0078] Based on the above embodiments, please refer to Figures 2-9 The 3D printing equipment includes a 3D printing machine main frame 1 and a 3D printing nozzle 8. A moving mechanism 2 is installed on the 3D printing machine main frame 1, and a fixed seat 3 is provided on the moving mechanism 2. It also includes a heating component 6 provided on the 3D printing machine main frame 1, which is used to heat the outer wall of the 3D printing nozzle 8 to soften the solidified slurry inside the 3D printing nozzle 8. A rotating component 4 is provided on the heating component 6, which is used to rotate to the lower part of the 3D printing nozzle 8. A reciprocating component 7 is provided on the rotating component 4, which is used to clean the slurry that is clogging the inside of the 3D printing nozzle 8. A waste collection component 5 is provided below the reciprocating component 7, which is used to intercept the slurry that falls when the reciprocating component 7 passes through the hole. A wiping component 9 is provided on the reciprocating component 7, which is used to clean the solidified slurry on the outer wall of the 3D printing nozzle 8.

[0079] The heating assembly 6 includes a first spur gear 62 fixedly connected to the output end of a first drive motor 61, and the first drive motor 61 is fixedly connected to the main frame 1 of the 3D printing machine. The first spur gear 62 meshes with a second spur gear 63. A connecting frame 64 is fixedly connected to the first spur gear 62 and the second spur gear 63 respectively, and the two connecting frames 64 are rotatably connected to the main frame 1 of the 3D printing machine. An electric heating plate 65 is fixedly connected to each connecting frame 64. The rotating assembly 4 includes a first bevel gear 41 fixedly connected to the second spur gear 63. The first bevel gear 41 meshes with the second bevel gear 42. A rotating shaft 43 is fixedly connected inside the second bevel gear 42, and the rotating shaft 43 is rotatably connected to the main frame 1 of the 3D printing machine.

[0080] Specifically, firstly, after the 3D printing equipment is used, the moving mechanism 2 drives the 3D printing nozzle 8 on the 3D printing nozzle 8 to the set position, which is the middle position of the two electric heating plates 65. Then, the first drive motor 61 is started, which drives the first sprocket 62 to rotate. The first sprocket 62 drives the second sprocket 63 to rotate. The first sprocket 62 and the second sprocket 63 drive the electric heating plates 65 on them to rotate through the connecting frame 64 and wrap around the outside of the 3D printing nozzle 8. It should be noted that the electric heating plate 65 is existing technology, which is used to heat the solidified slurry inside the 3D printing nozzle 8 by applying electricity, thereby softening and increasing its density. The fluidity of the slurry makes it easy to clean out from the inside of the 3D printing nozzle 8. Then, the rotation of the second sprocket 63 drives the first bevel gear 41 to rotate, the first bevel gear 41 drives the second bevel gear 42 to rotate, the second bevel gear 42 drives the rotating shaft 43 to rotate, and the rotating shaft 43 drives the waste collection component 5, the reciprocating component 7 and the wiping component 9 on it to rotate directly below the 3D printing nozzle 8. With one drive, the electric heating plate 65 can be rotated and wrapped around the outside of the 3D printing nozzle 8, while the rotating shaft 43 drives the reciprocating component 7, the waste collection component 5 and the wiping component 9 on it to rotate simultaneously to the bottom of the 3D printing nozzle 8.

[0081] The reciprocating assembly 7 includes a second drive motor 71 and a fixed frame 76. The output end of the second drive motor 71 is fixedly connected to a drive shaft 72. The upper end of the drive shaft 72 is fixedly connected to an inclined disk 73. The fixed frame 76 is fixedly connected to a rotating shaft 43, and the end of the fixed frame 76 away from the rotating shaft 43 is fixedly connected to a guide rail 77. The inside of the guide rail 77 is fixedly connected to a guide shaft 78. A slider 79 is fixedly connected to the guide shaft 78, and a spring 710 is sleeved on the outside of the guide shaft 78. The spring 710 is located between the guide rail 77 and the slider 79. A second connecting shaft 711 is fixedly connected to the slider 79. A first connecting shaft 75 is fixedly connected to the second connecting shaft 711. The lower end of the first connecting shaft 75 is provided with a ball 74 that fits against the disk 73. A connecting seat 713 is also fixedly connected to the second connecting shaft 711, and a through-hole needle 712 is fixedly connected to the connecting seat 713.

[0082] Specifically, by activating the second drive motor 71, the drive shaft 72 rotates, which in turn rotates the disc 73. Since the disc 73 is tilted, a height difference is created during rotation, which in turn pushes the upper ball 74 and the first connecting shaft 75 to move in a direction perpendicular to the ground. The first connecting shaft 75 pushes the second connecting shaft 711 to move. Because the second connecting shaft 711 slides on the guide shaft 78 via the slider 79, the slider 79 compresses the spring 710 during the upward movement of the second connecting shaft 711. Conversely, when the second connecting shaft 711 moves downward, it is able to move under the elastic force of the spring 710 and... Under its own gravity, the slider 79 is pushed to drive the second connecting shaft 711 downward, so that the ball 74 is always in contact with the disk 73. The rotation of the disk 73 causes the second connecting shaft 711 to move up and down. The second connecting shaft 711 drives the through-hole needle 712 to move up and down through the connecting seat 713. Since the through-hole needle 712 rotates to be directly below the 3D printing nozzle 8, when the through-hole needle 712 moves upward, it can reciprocate to insert into the slurry outlet of the 3D printing nozzle 8. With the heating of the electric heating plate 65, the slurry blocked inside the 3D printing nozzle 8 is cleared out to avoid affecting the next glass printing preparation operation.

[0083] The waste collection assembly 5 includes a connecting rod 51 fixedly connected to the rotating shaft 43. A waste slag trough 52 is fixedly connected to one end of the connecting rod 51 away from the rotating shaft 43. A second drive motor 71 is fixedly connected to the connecting rod 51. The waste slag trough 52 is located directly below the through-hole needle 712.

[0084] Specifically, during the rotation of the rotating shaft 43, the waste residue tank 52 can also be rotated to directly below the 3D printing nozzle 8 via the connecting rod 51, so as to catch the reciprocating component 7 and the wiping component 9 to clean up the dropped paste, thus avoiding the problem of it falling onto the printing table and being difficult to clean.

[0085] The wiping assembly 9 includes a third connecting shaft 91 fixedly connected to a second connecting shaft 711. A mounting shell 92 is fixedly connected to the third connecting shaft 91. A base 93 is provided inside the mounting shell 92. An external thread 94 is provided on the base 93. A threaded groove that mates with the external thread 94 is provided on the inner wall of the mounting shell 92. A wiping block 95 is provided at the upper end of the base 93.

[0086] Specifically, during the reciprocating motion of the second connecting shaft 711, it can also drive the third connecting shaft 91 to reciprocate up and down. The third connecting shaft 91 drives the wiping block 95 on the mounting housing 92 to reciprocate up and down, cleaning away the paste solidified on the outer end of the 3D printing nozzle 8. The wiping block 95 is made of rubber, which has good ductility and a certain degree of hardness, and can scrape off the solidified paste to avoid uneven spraying. Secondly, the base 93 on the external thread 94 can be installed and disassembled by cooperating with the threaded groove on the inner wall of the mounting housing 92, making it easy to replace.

[0087] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A method for preparing a double-layered glass bottle, characterized in that: Includes the following steps: S1. Weigh the two glass raw materials according to the composition, mix them evenly and put them into a platinum crucible for high-temperature melting. After holding at the temperature, take the glass liquid out of the high-temperature furnace and pour it into the mold to form a shape. Then, transfer the cast glass to an annealing furnace for annealing and then cool it to room temperature with the furnace. S2. The two types of glass obtained are crushed and ground to obtain glass powder, which is prepared into particles with a particle size range of 1~100μm, and then mixed with photoinitiator and photosensitive resin to prepare slurry. S3. Using 3D printing equipment, the two slurries are printed into the shape of a double-layered glass bottle, which is then degreased and sintered to obtain a glass bottle with a double-layered structure. S1 describes a glass raw material composition of: 75wt% SiO2, 5wt% Al2O3, 15wt% B2O3, 3.2wt% Na2O, 1.2wt% K2O, 0.3wt% NaCl, 0.2wt% CeO2 and 0.1wt% SnO; Another glass composition: 70 wt% SiO2, 2.2 wt% Al2O3, 5.8 wt% B2O3, 11 wt% Na2O, 0.8 wt% K2O, 8.5 wt% CaO, 0.6 wt% MgO, 0.3 wt% Fe2O3 and 0.8 wt% C.

2. The method for preparing a double-layered glass bottle according to claim 1, characterized in that, The temperature at which the platinum crucible described in S1 melts the glass is 1500℃~1600℃, and the holding time after melting is 2 hours. The temperature in the annealing furnace is 500℃~550℃, and the annealing time is 2 hours.

3. The method for preparing a double-layered glass bottle according to claim 1, characterized in that, The mass ratio of glass particles, photoinitiator, and photosensitive resin described in S2 is 90:0.8:9.

2.

4. The method for preparing a double-layered glass bottle according to claim 1, characterized in that, The degreasing temperature described in S3 is 450℃~550℃, and the vacuum sintering temperature after degreasing of the glass bottle is 1000℃~1100℃.

5. The method for preparing a double-layered glass bottle according to claim 1, characterized in that, The 3D printing equipment includes a 3D printing machine main frame (1) and a 3D printing nozzle (8). A moving mechanism (2) is installed on the 3D printing machine main frame (1), and a fixed base (3) is provided on the moving mechanism (2). Heating component (6) is set on the main frame (1) of the 3D printing machine and is used to attach to the outer wall of the 3D printing nozzle (8) for heating, so that the solidified paste inside the 3D printing nozzle (8) softens. A rotating component (4) is mounted on the heating component (6) for rotating to a position below the 3D printing nozzle (8); The reciprocating component (7) is mounted on the rotating component (4) and is used to clean the slurry that is clogged inside the 3D printing nozzle (8); Waste collection component (5) is located below reciprocating component (7) and is used to intercept slurry falling from the through hole of reciprocating component (7); Wiping component (9), mounted on reciprocating component (7), is used to clean the solidified paste on the outer wall of 3D printing nozzle (8).

6. The method for preparing a double-layered glass bottle according to claim 5, characterized in that, The heating component (6) includes a first sprocket (62) fixedly connected to the output end of a first drive motor (61), and the first drive motor (61) is fixedly connected to the main frame (1) of the 3D printing machine. The first sprocket (62) meshes with a second sprocket (63). A connecting frame (64) is fixedly connected to the first sprocket (62) and the second sprocket (63) respectively, and the two connecting frames (64) are rotatably connected to the main frame (1) of the 3D printing machine. An electric heating plate (65) is fixedly connected to each connecting frame (64). The rotating assembly (4) includes a first bevel gear (41) fixedly connected to the second spur gear (63), the first bevel gear (41) meshing with the second bevel gear (42), the second bevel gear (42) having a rotating shaft (43) fixedly connected inside, and the rotating shaft (43) being rotatably connected to the main frame (1) of the 3D printing machine.

7. The method for preparing a double-layered glass bottle according to claim 6, characterized in that, The reciprocating assembly (7) includes a second drive motor (71) and a fixed frame (76). The output end of the second drive motor (71) is fixedly connected to a drive shaft (72). The upper end of the drive shaft (72) is fixedly connected to an inclined disk (73). The fixed frame (76) is fixedly connected to a rotating shaft (43), and a guide rail (77) is fixedly connected to the end of the fixed frame (76) away from the rotating shaft (43). A guide shaft (78) is fixedly connected inside the guide rail (77), and a slider (79) is fixedly connected to the guide shaft (78). Furthermore, a spring (710) is sleeved on the outer side of the guide shaft (78). The spring (710) is located between the guide rail (77) and the slider (79). A second connecting shaft (711) is fixedly connected to the slider (79). A first connecting shaft (75) is fixedly connected to the second connecting shaft (711). A ball (74) that fits against the disc (73) is provided at the lower end of the first connecting shaft (75). A connecting seat (713) is also fixedly connected to the second connecting shaft (711). A through-hole needle (712) is fixedly connected to the connecting seat (713).

8. The method for preparing a double-layered glass bottle according to claim 7, characterized in that, The waste collection assembly (5) includes a connecting rod (51) fixedly connected to the rotating shaft (43), and a waste trough (52) fixedly connected to one end of the connecting rod (51) away from the rotating shaft (43). The second drive motor (71) is fixedly connected to the connecting rod (51), and the waste trough (52) is located directly below the through-hole needle (712).

9. The method for preparing a double-layered glass bottle according to claim 8, characterized in that, The wiping assembly (9) includes a third connecting shaft (91) fixedly connected to a second connecting shaft (711). A mounting shell (92) is fixedly connected to the third connecting shaft (91). A base (93) is provided inside the mounting shell (92). An external thread (94) is provided on the base (93). A threaded groove that mates with the external thread (94) is provided on the inner wall of the mounting shell (92). A wiping block (95) is provided at the upper end of the base (93).

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