Preparation method of glass bottle with double-layer structure

Abstract

The invention discloses a preparation method of a glass bottle with a double-layer structure, and relates to the technical field of glass bottle preparation, glass composed of two raw materials is subjected to high-temperature founding, molding and annealing, the glass is prepared into particles with the particle size range of 1-100 microns, the particles are mixed with a photoinitiator and photosensitive resin to prepare slurry, and the slurry is prepared into the glass bottle with the double-layer structure. The two kinds of slurry are printed into the shape of a double-layer glass bottle through 3D printing equipment, degreasing and sintering are conducted, the glass bottle of a double-layer structure is obtained, multiple properties can be provided for the glass bottle, for example, the shape of the glass bottle can be changed, and the problem that the forming difficulty of the glass bottle is large is solved; the glass bottle with the double-layer glass structure has the advantages that the glass bottle is formed in one step, the performance of the glass is more stable than that of a film layer, and a reagent is not deteriorated after being stored for a long time, so that the complicated coating process is omitted, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of glass bottle preparation, and in particular relates to a method for preparing a double-layer glass bottle. Background Art

[0002] Glass bottles are traditional packaging containers used to package beverages, alcoholic beverages, chemicals, medicines, etc. They have stable chemical properties, good barrier properties and sealing properties, and can effectively protect the contents from the influence of the external environment. According to the needs of the application field, higher requirements will be placed on the performance of glass bottles, so it is difficult for a single glass composition to meet the requirements of multiple performances at the same time. Therefore, coating glass bottles is a common method, by coating metal or other compound films on the glass surface to change the optical, thermal, and electromagnetic properties of the glass bottle to meet specific usage requirements.

[0003] Reagents in the microelectronics industry have extremely high requirements for the precipitation of metal ions and other impurities in packaging materials, while glass materials have excellent optical, mechanical, thermal stability, chemical stability and other properties, and are excellent materials for the storage and packaging of reagents in the microelectronics industry. Since reagents in the microelectronics industry are easily reacted with alkali metals, their storage conditions have very high requirements for the precipitation of metal ions in glass storage bottles. Surface treatment of glass bottles, such as coating their inner surfaces with functional films, can enable glass bottles to achieve the performance required by the application environment and meet the storage conditions of reagents. Due to the large size, heavy weight, and special shape of glass storage bottles (especially some special-shaped parts of the bottle mouth), coating is difficult. At present, the industrial coating of glass bottles has the disadvantages of low energy utilization efficiency, low processing efficiency, and weak film bonding.

[0004] To this end, double-layer glass bottles can be printed out through 3D printing equipment to solve the above shortcomings. However, there are still some problems in the printing process of 3D printing equipment. Since the discharge port of the printing spray head in the 3D printing equipment is relatively small, it is easy to be blocked by glass slurry, and the solidified slurry is easy to adhere to the end of the printing spray head. Long-term accumulation is easy to cause uneven spraying, which in turn affects the quality of the produced glass bottles. Summary of the invention

[0005] In order to solve the problems raised by the above background technology, the present invention proposes a method for preparing a double-layer structure glass bottle.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for preparing a double-layer glass bottle comprises the following steps:

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

[0009] S2, crushing and grinding the obtained glass to obtain glass powder, preparing particles with a particle size range of 1 to 100 μm, and mixing with a photoinitiator and a photosensitive resin to prepare a slurry;

[0010] S3. Print the two slurries into a double-layer glass bottle shape through 3D printing equipment, degrease and sinter, and obtain a glass bottle with a double-layer structure.

[0011] As a further preferred embodiment of the present technical solution: S1 is a glass raw material composed of: 75wt% SiO2, 5wt% A12O3, 15wt% B2O3, 3.2wt% Na2O, 1.2wt% K2O, 0.3wt% NaCl, 0.2wt% CeO2 and 0.1wt% SnO;

[0012] Another glass composition: 70wt% SiO2, 2.2wt% A12O3, 5.8wt% B2O3, 11wt% Na2O, 0.8wt% K2O, 8.5wt% CaO, 0.6wt% MgO, 0.3% Fe2O3 and 0.8wt% C.

[0013] As a further preferred embodiment of the present technical solution: S1, the temperature of melting glass in the platinum crucible is 1500°C to 1600°C, and the insulation time after melting is 2 hours, the temperature in the annealing furnace is 500°C to 550°C, and the annealing time is 2 hours.

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

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

[0016] As a further preferred embodiment of the present technical solution: the 3D printing device comprises a 3D printer main frame and a 3D printing spray head, a moving mechanism is installed on the 3D printer main frame, a fixed seat is provided on the moving mechanism, and further comprises

[0017] The heating component is arranged on the main frame of the 3D printer and is used to heat the outer wall of the 3D printing nozzle to soften the solidified slurry inside the 3D printing nozzle;

[0018] The rotating assembly is arranged on the heating assembly and is used to rotate to the bottom of the 3D printing spray head;

[0019] A reciprocating assembly is provided on the rotating assembly and is used to clean the slurry that is blocked inside the 3D printing nozzle;

[0020] A waste residue collection assembly is arranged below the reciprocating assembly and is used to intercept the slurry dropped when the reciprocating assembly penetrates the hole;

[0021] The wiping component is arranged on the reciprocating component and is used to clean the solidified slurry on the outer wall of the 3D printing spray head.

[0022] As a further preferred embodiment of the technical solution: the heating assembly includes a No. 1 circular gear fixedly connected to the output end of the No. 1 driving motor, and the No. 1 driving motor is fixedly connected to the main frame of the 3D printer, the No. 1 circular gear is meshed with a No. 2 circular gear, and the No. 1 circular gear and the No. 2 circular gear are respectively fixedly connected to a connecting frame, and the two connecting frames are rotatably connected to the main frame of the 3D printer, and each of the connecting frames is fixedly connected to an electric heating plate;

[0023] The rotating assembly includes a first bevel gear fixedly connected to a second circular gear, the first bevel gear meshes with a second bevel gear, a rotating shaft is fixedly connected inside the second bevel gear, and the rotating shaft is rotatably connected to a main frame of the 3D printer.

[0024] As a further preferred embodiment of the present technical solution: the reciprocating assembly includes a No. 2 driving motor and a fixed frame, the output end of the No. 2 driving motor is fixedly connected to a driving shaft, the upper end of the driving shaft is fixedly connected to a tilted disc, the fixed frame is fixedly connected to the rotating shaft, and the end of the fixed frame away from the rotating shaft is fixedly connected to a guide rail, the inside of the guide rail is fixedly connected to a guide shaft, the guide shaft is fixedly connected to a slider, and the outer side of the guide shaft is sleeved with a spring, the spring is arranged between the guide rail and the slider, the slider is fixedly connected to a No. 2 connecting shaft, the No. 2 connecting shaft is fixedly connected to a No. 1 connecting shaft, the lower end of the No. 1 connecting shaft is provided with a rolling ball arranged in close contact with the disc, the No. 2 connecting shaft is also fixedly connected to a connecting seat, and a through-hole needle is fixedly connected to the connecting seat.

[0025] As a further preferred embodiment of the present technical solution: the waste residue collection assembly includes a connecting rod fixedly connected to the rotating shaft, the end of the connecting rod away from the rotating shaft is fixedly connected to a waste residue trough, the No. 2 drive motor is fixedly connected to the connecting rod, and the waste residue trough is arranged directly below the through-hole needle.

[0026] As a further preferred embodiment of the present technical solution: the wiping assembly includes a No. 3 connecting shaft fixedly connected to the No. 2 connecting shaft, a mounting shell is fixedly connected to the No. 3 connecting shaft, a base is provided inside the mounting shell, an external thread is provided on the base, and a thread groove matching the external thread is provided on the inner wall of the mounting shell, and a wiping block is provided at the upper end of the base.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, a double-layer glass bottle is prepared by a 3D printing device, which can provide the glass bottle with multiple properties. For example, the shape of the glass bottle can be changed, which solves the problem of difficulty in forming the glass bottle. In addition, compared with the method of increasing the performance of the glass bottle by coating, the glass bottle with a double-layer glass structure has the advantages of one-step forming, more stable performance of the glass than the film layer, and no deterioration of the reagent during long-term storage, eliminating the cumbersome process of coating and significantly improving production efficiency.

[0029] 2. In the present invention, the heating component can heat the spray head to soften the solidified slurry inside, and the reciprocating component can clean the slurry outlet of the 3D printing spray head by controlling the up and down reciprocating movement of the through-hole needle to clean out the blocked slurry, which is simple to operate.

[0030] 3. In the present invention, while the spray head reciprocates up and down, the solidified slurry attached to the end of the spray head is automatically cleaned by the wiping block. This automated maintenance process not only reduces manual intervention and operation complexity, but also ensures the continuous cleaning of the spray head. In addition, the detachable wiping block can facilitate the replacement of worn wiping blocks.

[0031] 4. In the present invention, the waste slurry dropped by the through-hole needle when drilling a hole can be caught by the waste residue groove and cleaned by the wiping block, thereby preventing the waste slurry from dropping onto the printing table and being difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the 3D printing device in the present invention;

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

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

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

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

[0038] Figure 7 for Figure 6 A magnified schematic diagram of the structure at B in the middle;

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

[0040] Fig. 9 for Figure 2 Exploded diagram of the local structure.

[0041] Legend: 1. 3D printer main frame; 2. Moving mechanism; 3. Fixed seat; 4. Rotating assembly; 41. Bevel gear No. 1; 42. Bevel gear No. 2; 43. Rotating shaft; 5. Waste slag collection assembly; 51. Connecting rod; 52. Waste slag trough; 6. Heating assembly; 61. Driving motor No. 1; 62. Circular gear No. 1; 63. Circular gear No. 2; 64. Connecting frame; 65. Electric heating plate; 7. Reciprocating assembly; 71. Circular gear No. 2 No. 1 driving motor; 72, driving shaft; 73, disc; 74, ball; 75, No. 1 connecting shaft; 76, fixing bracket; 77, guide rail; 78, guide shaft; 79, slider; 710, spring; 711, No. 2 connecting shaft; 712, through-hole needle; 713, connecting seat; 8, 3D printing spray head; 9, wiping assembly; 91, No. 3 connecting shaft; 92, mounting shell; 93, base; 94, external thread; 95, wiping block. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1 The present application provides a method for preparing a double-layer glass bottle, and the specific implementation steps are as follows:

[0044] The first glass (hereinafter referred to as A glass) used in the following Examples 1 to 5 is composed of the following raw materials in weight percentage: 75wt% SiO2, 5wt% A12O3, 15wt% B2O3, 3.2wt% Na2O, 1.2wt% K2O, 0.3wt% NaC1, 0.2wt% CeO2 and 0.1wt% SnO; the second glass (hereinafter referred to as B glass) is composed of the following raw materials in weight percentage: 70wt% SiO2, 2.2wt% A12O3, 5.8wt% B2O3, 11wt% Na2O, 0.8wt% K2O, 8.5wt% CaO, 0.6wt% MgO, 0.3% Fe2O3 and 0.8wt% C.

[0045] The A slurry used in the following examples 1 to 5 is composed of: 450g A glass particles, 4g trimethylbenzoyl-xylphosphine oxide (TMO), 46g epoxy (meth) acrylate, trimethylolpropane triacrylate, and a mixture of ethylenediamine (the contents are 4.5g, 12g, and 29.5g, respectively); the B slurry is composed of: 450g B glass particles, 4g trimethylbenzoyl-xylphosphine oxide (TMO), 46g epoxy (meth) acrylate, trimethylolpropane triacrylate, and a mixture of ethylenediamine (the contents are 4.5g, 12g, and 29.5g, respectively)

[0046] Embodiment 1:

[0047] (1) weighing the raw materials according to the composition, mixing them evenly and putting them into a platinum crucible, melting them at 1500°C, taking the glass liquid out of the high-temperature furnace after 2 hours of heat preservation, casting it into a mold, transferring the cast glass to a 500°C annealing furnace for annealing for 2 hours, and then cooling it to room temperature with the furnace;

[0048] (2) After preparing A glass sample, crushing and grinding it to obtain glass powder, using a precision screening system to obtain particles with a particle size of 50 to 100 μm, and then mixing the glass particles, a photoinitiator, and a photosensitive resin according to weight to prepare A slurry;

[0049] (3) Printing layer by layer by DLP light source to print 500 g of slurry A to obtain a single-layer glass bottle;

[0050] (4) Degreasing the printed single-layer glass bottle at 450°C;

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

[0052] Embodiment 2:

[0053] (1) weighing the raw materials according to the composition, mixing them evenly and putting them into a platinum crucible, melting them at 1500°C, taking the glass liquid out of the high-temperature furnace after 2 hours of heat preservation, casting it into a mold, transferring the cast glass to a 500°C annealing furnace for annealing for 2 hours, and then cooling it to room temperature with the furnace;

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

[0055] (3) Printing layer by layer through DLP light source irradiation, printing 280g of A slurry on the outer layer and 220g of B slurry on the inner layer, and printing a double-layer glass bottle;

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

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

[0058] Embodiment three:

[0059] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible, melt them at 1550°C, take the glass liquid out of the high-temperature furnace after 2 hours of heat preservation, cast it into a mold, transfer the cast glass to a 525°C annealing furnace for annealing for 2 hours, and then cool it to room temperature with the furnace;

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

[0061] (3) Printing layer by layer through DLP light source irradiation, printing 300g of A slurry on the outer layer and 200g of B slurry on the inner layer, and printing a double-layer glass bottle;

[0062] (4) Degreasing the printed double-layer glass bottle at 500° C.

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

[0064] Embodiment 4:

[0065] (1) weighing the raw materials according to the composition, mixing them evenly and putting them into a platinum crucible, melting them at 1600°C, taking the glass liquid out of the high-temperature furnace after 2 hours of heat preservation, casting it into a mold, transferring the cast glass to a 550°C annealing furnace for annealing for 2 hours, and then cooling it to room temperature with the furnace;

[0066] (2) crushing and grinding the prepared A glass and B glass samples to obtain glass powder, respectively, and obtaining particles with a particle size range of less than 20 μm through a precision screening system, and then mixing the glass particles, a photoinitiator, and a photosensitive resin according to weight to prepare A slurry and B slurry;

[0067] (3) Printing layer by layer by DLP light source, printing 320g of A slurry on the outer layer and 180g of B slurry on the inner layer, to obtain a double-layer glass bottle;

[0068] (4) Degreasing the printed double-layer glass bottle at 550° C.

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

[0070] Embodiment five:

[0071] (1) Weigh the raw materials according to the composition, mix them evenly and put them into a platinum crucible, melt them at 1570°C, take the glass liquid out of the high-temperature furnace after 2 hours of heat preservation, cast it into a mold, transfer the cast glass to a 535°C annealing furnace for annealing for 2 hours, and then cool it to room temperature with the furnace;

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

[0073] (3) Printing layer by layer through DLP light source irradiation, printing 300g of A slurry on the outer layer and 200g of B slurry on the inner layer, and printing a double-layer glass bottle;

[0074] (4) Degreasing the printed double-layer glass bottle at 525°C;

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

[0076] Based on the above examples 1 to 5, Figure 1As shown, from 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 3D printing with component A glass alone cannot meet the demand for containing reagents, while the B, Na, K, Ca, and Mg ion precipitations of Examples 2 to 5 are all less than 0.1 ppb, indicating that the use of a double-layer glass structure can well inhibit the precipitation of metal ions, so that the glass bottle can meet the demand for containing reagents.

[0077] Embodiment six:

[0078] Based on the above examples, please refer to Figure 2-Figure 9 The 3D printing device includes a 3D printer main frame 1 and a 3D printing spray head 8. A moving mechanism 2 is installed on the 3D printer main frame 1, and a fixed seat 3 is arranged on the moving mechanism 2. The 3D printer main frame 1 also includes a heating component 6 arranged on the 3D printer main frame 1, which is used to heat the outer wall of the 3D printing spray head 8 to soften the solidified slurry inside the 3D printing spray head 8; a rotating component 4 is arranged on the heating component 6, which is used to rotate to the bottom of the 3D printing spray head 8; a reciprocating component 7 is arranged on the rotating component 4, which is used to clean the slurry blocked inside the 3D printing spray head 8; a waste residue collecting component 5 is arranged below the reciprocating component 7, which is used to intercept the slurry dropped when the reciprocating component 7 is through-hole; a wiping component 9 is arranged on the reciprocating component 7, which is used to clean the solidified slurry on the outer wall of the 3D printing spray head 8;

[0079] The heating component 6 includes a No. 1 circular gear 62 fixedly connected to the output end of the No. 1 driving motor 61, and the No. 1 driving motor 61 is fixedly connected to the main frame 1 of the 3D printer, the No. 1 circular gear 62 is meshed with a No. 2 circular gear 63, and the No. 1 circular gear 62 and the No. 2 circular gear 63 are respectively fixedly connected with a connecting frame 64, and the two connecting frames 64 are rotatably connected to the main frame 1 of the 3D printer, and each connecting frame 64 is fixedly connected with an electric heating plate 65; the rotating component 4 includes a No. 1 bevel gear 41 fixedly connected to the No. 2 circular gear 63, the No. 1 bevel gear 41 is meshed with a No. 2 bevel gear 42, and the interior of the No. 2 bevel gear 42 is fixedly connected with a rotating shaft 43, and the rotating shaft 43 is rotatably connected to the main frame 1 of the 3D printer.

[0080] Specifically, first, when the 3D printing device is used, the 3D printing spray head 8 on 3 is driven by the moving mechanism 2 to reach the set position, that is, the position in the middle of the two electric heating plates 65, and the No. 1 driving motor 61 is started to drive the No. 1 circular gear 62 to rotate, and the No. 1 circular gear 62 drives the No. 2 circular gear 63 to rotate. The No. 1 circular gear 62 and the No. 2 circular gear 63 respectively drive the electric heating plates 65 thereon to rotate through the connecting frame 64 and wrap around the outside of the 3D printing spray head 8. It should be noted that the electric heating plate 65 is a prior art, which is used for heating by powering on, and the solidified slurry inside the 3D printing spray head 8 is heated and softened to increase the The fluidity of the slurry makes it easy to clean it out from the inside of the 3D printing spray head 8. Then, the rotation of the No. 2 circular gear 63 can drive the No. 1 bevel gear 41 to rotate, the No. 1 bevel gear 41 drives the No. 2 bevel gear 42 to rotate, the No. 2 bevel gear 42 drives the rotating shaft 43 to rotate, and the rotating shaft 43 drives the waste residue collection component 5, the reciprocating component 7 and the wiping component 9 thereon to rotate to the bottom of the 3D printing spray head 8. Through one drive, the electric heating plate 65 can be rotated and wrapped around the outside of the 3D printing spray head 8, while the rotating shaft 43 drives the reciprocating component 7, the waste residue collection component 5 and the wiping component 9 thereon to rotate to the bottom of the 3D printing spray head 8 at the same time.

[0081] The reciprocating assembly 7 includes a No. 2 driving motor 71 and a fixed frame 76, the output end of the No. 2 driving motor 71 is fixedly connected to a driving shaft 72, the upper end of the driving shaft 72 is fixedly connected to a disc 73 arranged in an inclined manner, the fixed frame 76 is fixedly connected to the 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 outer side of the guide shaft 78, and the spring 710 is arranged between the guide rail 77 and the slider 79, a No. 2 connecting shaft 711 is fixedly connected to the slider 79, and a No. 1 connecting shaft 75 is fixedly connected to the No. 2 connecting shaft 711, and a ball 74 is arranged in close contact with the disc 73 at the lower end of the No. 1 connecting shaft 75, and a connecting seat 713 is also fixedly connected to the No. 2 connecting shaft 711, and a through-hole needle 712 is fixedly connected to the connecting seat 713.

[0082] Specifically, the driving shaft 72 is driven to rotate by starting the second driving motor 71, and the driving shaft 72 drives the disc 73 to rotate. Since the disc 73 is arranged at an angle, a height difference is generated during the rotation process, thereby pushing the upper rolling ball 74 and the first connecting shaft 75 to move in a direction perpendicular to the ground, and the first connecting shaft 75 pushes the second connecting shaft 711 to move. Since the second connecting shaft 711 slides on the guide shaft 78 through the slider 79, the slider 79 will squeeze the spring 710 during the rising process of the second connecting shaft 711, and when the second connecting shaft 711 moves downward, it can be moved with the spring 710 under the action of the elastic force of the spring 710. Under its own gravity, the slider 79 is pushed to drive the second connecting shaft 711 to move downward, so that the ball 74 is always in contact with the disc 73, and the second connecting shaft 711 is caused to reciprocate up and down through the rotation of the disc 73. The second connecting shaft 711 drives the through-hole needle 712 to reciprocate up and down through the connecting seat 713. Since the through-hole needle 712 rotates to the bottom of the 3D printing spray head 8, when the through-hole needle 712 moves upward, it can be reciprocated and inserted into the slurry outlet of the 3D printing spray head 8, and cooperate with the heating of the electric heating plate 65 to clean out the slurry blocked inside the 3D printing spray head 8, so as not to affect the next glass cup printing preparation operation.

[0083] The waste residue collection assembly 5 includes a connecting rod 51 fixedly connected to the rotating shaft 43, and a waste residue trough 52 is 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 residue trough 52 is arranged directly below the through-hole needle 712.

[0084] Specifically, during the rotation of the rotating shaft 43, the waste residue trough 52 can be driven by the connecting rod 51 to rotate to the bottom of the 3D printing nozzle 8, so as to catch the slurry dropped by the reciprocating component 7 and the wiping component 9 to avoid the slurry dropping onto the printing table and being difficult to clean.

[0085] The wiping assembly 9 includes a No. 3 connecting shaft 91 fixedly connected to the No. 2 connecting shaft 711, and a mounting shell 92 is fixedly connected to the No. 3 connecting shaft 91. A base 93 is arranged inside the mounting shell 92, and an external thread 94 is arranged on the base 93. A thread groove matching the external thread 94 is arranged on the inner wall of the mounting shell 92, and a wiping block 95 is arranged at the upper end of the base 93.

[0086] Specifically, the No. 3 connecting shaft 91 can also be driven to reciprocate up and down during the up and down reciprocating motion of the No. 2 connecting shaft 711. The No. 3 connecting shaft 91 drives the wiping block 95 on the mounting shell 92 to reciprocate up and down to clean up the slurry solidified on the end of the outer wall of the 3D printing spray head 8. Among them, the wiping block 95 is made of rubber material, which has good ductility and a certain hardness. It can scrape off the solidified slurry to avoid the problem of uneven spraying. Secondly, the base 93 on the external thread 94 can be installed and disassembled in cooperation with the threaded groove on the inner wall of the mounting shell 92, so as to facilitate its replacement.

[0087] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A method for preparing a double-layer glass bottle, characterized in that: The following steps are involved: S1. Weigh two glass raw materials according to their composition, mix them evenly and put them into a platinum crucible for high-temperature melting. After heat preservation, take the glass liquid out of the high-temperature furnace and cast it into a mold. After that, transfer the cast glass to an annealing furnace for annealing, and then cool it to room temperature with the furnace; S2, crushing and grinding the obtained glass to obtain glass powder, preparing particles with a particle size range of 1 to 100 μm, and mixing with a photoinitiator and a photosensitive resin to prepare a slurry; S3. Print the two slurries into a double-layer glass bottle shape through 3D printing equipment, degrease and sinter, and obtain a glass bottle with a double-layer structure.

2. The method for preparing a double-layer glass bottle according to claim 1, characterized in that: S1 is a glass raw material composed of: 75wt% SiO2, 5wt% A12O3, 15wt% B2O3, 3.2wt% Na2O, 1.2wt% K2O, 0.3wt% NaCl, 0.2wt% CeO2 and 0.1wt% SnO; Another glass composition: 70wt% SiO2, 2.2wt% A12O3, 5.8wt% B2O3, 11wt% Na2O, 0.8wt% K2O, 8.5wt% CaO, 0.6wt% MgO, 0.3% Fe2O3 and 0.8wt% C.

3. The method for preparing a double-layer glass bottle according to claim 1, characterized in that: S1 The temperature of the platinum crucible for melting glass is 1500°C to 1600°C, and the insulation time after melting is 2 hours. The temperature in the annealing furnace is 500°C to 550°C, and the annealing time is 2 hours.

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

2.

5. The method for preparing a double-layer glass bottle according to claim 1, characterized in that: The degreasing temperature in S3 is 450°C to 550°C, and the vacuum sintering temperature of the glass bottle after degreasing is 1000°C to 1100°C.

6. The method for preparing a double-layer glass bottle according to claim 1, characterized in that: The 3D printing device comprises a 3D printer main frame (1) and a 3D printing spray head (8), wherein a moving mechanism (2) is installed on the 3D printer main frame (1), a fixed seat (3) is arranged on the moving mechanism (2), and further comprises A heating component (6) is arranged on the main frame (1) of the 3D printing machine and is used to heat the periphery of the outer wall of the 3D printing spray head (8) so as to soften the solidified slurry inside the 3D printing spray head (8); A rotating assembly (4) is disposed on the heating assembly (6) and is used to rotate to the bottom of the 3D printing spray head (8); A reciprocating assembly (7) is arranged on the rotating assembly (4) and is used to clean the slurry that is blocked inside the 3D printing spray head (8); A waste residue collecting assembly (5) is arranged below the reciprocating assembly (7) and is used to intercept the slurry dropped when the reciprocating assembly (7) is perforated; The wiping component (9) is arranged on the reciprocating component (7) and is used to clean the solidified slurry on the outer wall of the 3D printing spray head (8).

7. The method for preparing a double-layer glass bottle according to claim 6, characterized in that: The heating assembly (6) comprises a first circular gear (62) fixedly connected to the output end of a first driving motor (61), and the first driving motor (61) is fixedly connected to the main frame (1) of the 3D printer, the first circular gear (62) is meshed with a second circular gear (63), the first circular gear (62) and the second circular gear (63) are respectively fixedly connected to a connecting frame (64), and the two connecting frames (64) are rotatably connected to the main frame (1) of the 3D printer, and each connecting frame (64) is fixedly connected to an electric heating plate (65); The rotating assembly (4) comprises a first bevel gear (41) fixedly connected to a second circular gear (63); the first bevel gear (41) is meshed with a 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 a main frame (1) of the 3D printer.

8. The method for preparing a double-layer glass bottle according to claim 7, characterized in that: The reciprocating assembly (7) comprises a second driving motor (71) and a fixed frame (76); the output end of the second driving motor (71) is fixedly connected to a driving shaft (72); the upper end of the driving shaft (72) is fixedly connected to a circular disc (73) arranged in an inclined manner; the fixed frame (76) is fixedly connected to the 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 interior of the guide rail (77) is fixedly connected to a guide shaft (78); and a slider (79) is fixedly connected to the guide shaft (78). A spring (710) is sleeved on the outer side of the guide shaft (78), and the spring (710) is arranged between the guide rail (77) and the slider (79). A second connecting shaft (711) is fixedly connected to the slider (79), and a first connecting shaft (75) is fixedly connected to the second connecting shaft (711). A rolling ball (74) arranged in close contact with the disc (73) is arranged at the lower end of the first connecting shaft (75). 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).

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

10. The method for preparing a double-layer glass bottle according to claim 9, characterized in that: The wiping assembly (9) comprises 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 arranged inside the mounting shell (92); an external thread (94) is arranged on the base (93); a thread groove matching the external thread (94) is arranged on the inner wall of the mounting shell (92); and a wiping block (95) is arranged at the upper end of the base (93).

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