A glass forming device and method

Abstract

The present invention provides a glass forming device and method. The glass forming device includes: a melting furnace, a forming die, a power mechanism and a pipeline. The melting furnace is provided with a first opening. The melting furnace heats and melts metal into molten metal and stores the molten metal. One end of the pipeline extends out of the melting furnace through the first opening, and one end of the pipeline is connected to the forming die. The other end of the pipeline is suspended in the molten metal. The pipeline is used to provide a flow channel for the molten metal. The power mechanism includes a driving part and a punch fixedly connected to the driving part. The punch is suspended above one end of the pipeline located in the molten metal. The driving part drives the punch to move in a direction close to or away from one end of the pipeline suspended in the molten metal, so as to drive the molten metal to flow into or out of the forming die through the pipeline. The forming die includes a cavity, and the cavity is connected to the melting furnace through the pipeline for the molten metal to flow in. A glass preform is fixed in the cavity and is softened and formed under the action of the molten metal to form a glass component. This application can form more complex glass components.

Description

Technical Field

[0001] The present invention relates to the field of glass forming, and particularly to a glass forming device and method. Background Art

[0002] For existing curved glass, flat glass is processed by a mold or machine tool equipment through a mold or cutter, and then a finished product with a curved arc is made into a glass plate.

[0003] In the existing method of manufacturing curved glass with a mold, there are upper and lower molds. A cavity with the shape of the curved glass to be processed is provided in the lower mold. After placing the flat glass on the cavity of the lower mold, the upper and lower molds and the flat glass are heated to the glass softening temperature, and the softened flat glass is pressed into curved glass by the way of aligning the upper mold with the lower mold.

[0004] Although the above-mentioned existing glass molding process can make flat glass into curved glass, it performs hot bending forming without changing the thickness of the flat glass, which has great limitations in the bending depth, angle and radian of glass products and cannot form more complex glass components. Summary of the Invention

[0005] The present invention provides a glass forming device and method, aiming to solve the technical problem that more complex glass components cannot be formed in the prior art.

[0006] The present application provides a glass forming device, including: a melting furnace, a forming mold, a power mechanism and a pipeline.

[0007] The melting furnace is provided with a first opening. The melting furnace melts metal into metal liquid and stores the metal liquid.

[0008] One end of the pipeline extends out of the melting furnace through the first opening, and one end of the pipeline is connected to the forming mold. The other end of the pipeline is suspended in the metal liquid. The pipeline is used to provide a flow channel for the metal liquid.

[0009] The power mechanism includes a driving part and a punch fixedly connected to the driving part. The punch is suspended above one end of the pipeline located in the metal liquid. The driving part drives the punch to move in a direction close to or away from one end of the pipeline suspended in the metal liquid, so as to drive the metal liquid to flow into or out of the forming mold through the pipeline.

[0010] The forming mold includes a cavity, which is connected to the melting furnace through the pipeline for the metal liquid to flow in. A glass preform is fixed in the cavity and softened and formed under the action of the metal liquid to form a glass component.

[0011] In a possible implementation manner of the present application, the mold includes: The forming mold includes a lower mold and an upper mold that cooperates with the lower mold. The cavity includes an injection cavity opened on the lower mold and a cavity opened on the upper mold. The cavity and the injection cavity face each other. The cavity is used to provide a forming space for the forming of the glass preform. The lower mold is provided with a feeding port, and the pipeline is connected to the injection cavity through the feeding port. Platform parts are provided on both sides of the injection cavity, and the height of the platform parts is lower than the height of the upper surface of the lower mold. The glass preform is placed on the platform parts.

[0012] In a possible implementation manner of the present application, the upper mold is provided with at least one upper mold vent hole that penetrates the upper mold and is used to discharge the gas in the cavity or inflate the cavity with gas.

[0013] In a possible implementation manner of the present application, the lower mold is provided with at least one lower mold vent hole that penetrates the lower mold and is used to discharge the gas in the injection cavity or inflate the injection cavity with gas.

[0014] In a possible implementation manner of the present application, the upper mold includes an upper mold core and an upper mold base. The upper mold base includes an upper cavity. The upper mold core is arranged in the upper cavity, and the upper mold core is detachably connected to the upper mold base. The cavity is formed on the upper mold core; the lower mold includes a lower mold core and a lower mold base. The lower mold base includes a lower cavity. The lower mold core is arranged in the lower cavity, and the lower mold core is detachably connected to the lower mold base. The injection cavity is formed on the lower mold core.

[0015] In a possible implementation manner of the present application, a first sealing groove is arranged on the lower surface of the upper mold core and is used to place a sealing gasket to prevent the metal liquid from flowing out of the forming mold.

[0016] In a possible implementation manner of the present application, the forming mold further includes a mold bushing. The mold bushing includes an opening, and the diameter of the opening is the same as the diameter of the feeding port. The mold bushing is detachably connected to the lower mold.

[0017] In a possible implementation manner of the present application, the power mechanism includes: a motor, a transmission system, and a lead screw. The motor is used to provide a rotational driving force. One end of the transmission system is fixedly connected to the output shaft of the motor, and the other end of the transmission system is rotatably connected to the lead screw. The lead screw is used to convert the rotational driving force provided by the motor into a linear driving force. The punch is fixedly connected to one end of the lead screw close to the pipeline and is used to move up and down under the drive of the lead screw. The lead screw penetrates the second opening, and the punch extends into the metal liquid to provide pressure for the metal liquid.

[0018] In a possible implementation manner of the present application, the outer wall of the pipeline near the end close to the molding die fits the first opening, and the outer wall of the punch fits the inner wall of the pipeline.

[0019] In a possible implementation manner of the present application, the glass molding device further includes a protection die, and the protection die includes a cavity, and the molding die is arranged in the cavity of the protection die.

[0020] The present invention also provides a glass molding method, including:

[0021] Placing a preheated glass preform in the molding die;

[0022] Heating the metal in the melting furnace to melt it into a metal liquid;

[0023] Applying pressure to the metal liquid in the melting furnace through a power mechanism, so that the metal liquid is transmitted to the molding die through the pipeline to mold the glass preform and form a glass component;

[0024] Relieving the pressure on the metal liquid in the melting furnace through the power mechanism, so that the metal liquid flows back to the melting furnace through the pipeline;

[0025] Cooling the glass component and taking out the glass component from the molding die.

[0026] The present invention uniformly applies pressure to the glass preform through the metal liquid, so that the pressures borne by the glass preform in all directions during the deformation process are the same, to ensure that more complex glass components can be molded under the condition of uniform thickness of the glass preform, thereby solving the technical problem in the prior art that more complex glass components cannot be molded. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic structural diagram of the glass molding device provided in Embodiment 1 of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the melting furnace provided in Embodiment 1 of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the protection die provided in Embodiment 1 of the present invention;

[0031] Figure 4It is a schematic structural diagram of a double-layer mold provided in the first embodiment of the present invention;

[0032] Figure 5 It is a flowchart of a glass forming method provided in the second embodiment of the present invention. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more unless otherwise specifically defined.

[0035] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or more advantageous than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood by those skilled in the art that the present invention can be realized without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in this application.

[0036] The embodiments of the present invention provide a glass forming device and method. The following will be described in detail respectively.

[0037] Embodiment 1

[0038] As Figure 1 and Figure 2 shown, the glass forming device includes: a melting furnace 100, a forming die 200, a power mechanism 300, and a pipeline 400. The melting furnace 100 is used to heat and melt metal into molten metal and store the molten metal. The melting furnace 100 is provided with a first opening 110. One end of the pipeline 400 extends out of the melting furnace 100 through the first opening 110, and one end of the pipeline 400 is connected to the forming die 200. The other end of the pipeline 400 is suspended in the molten metal. The pipeline 400 is used to provide a flow channel for the molten metal;

[0039] The power mechanism 300 includes a driving part 301 and a punch 302 fixedly connected to the driving part 301. The punch 302 is suspended above one end of the pipeline 400 located in the molten metal. The driving part 301 drives the punch 302 to move in a direction close to or away from one end of the pipeline 400 suspended in the molten metal, so as to drive the molten metal to flow into or out of the forming die 200 through the pipeline 400;

[0040] The forming die 200 includes a cavity, and the cavity is connected to the melting furnace 100 through the pipeline 400 for the molten metal to flow in. The glass preform is fixed in the cavity and is softened and formed under the action of the molten metal to form a glass element.

[0041] In this application, the molten metal uniformly applies pressure to the glass preform in the forming die 200, so that the pressures borne by the glass preform in all directions during the softening deformation process are the same, so as to ensure that more complex glass elements can be formed when the thickness of the glass preform is uniform; at the same time, by setting the power mechanism 300, the pressure borne by the glass preform during the deformation process can be controlled, and the forming accuracy of the glass element can be improved.

[0042] Further, as Figure 3 shown, the forming die 200 includes: a lower die 210 and an upper die 220 that cooperates with the lower die 210. The glass preform is fixed between the lower die 210 and the upper die 220. The cavity includes an injection cavity 211 opened on the lower die 210 and a cavity 221 opened on the upper die 220. The cavity 221 and the injection cavity 212 are opposite to each other. The cavity 221 is used to provide a forming space for the forming of the glass preform; the lower die 210 is provided with a feed port 211, and the pipeline 400 is connected to the injection cavity 212 through the feed port 211. The injection cavity 212 is used to hold the molten metal. Platform parts 213 are provided on both sides of the injection cavity 212. The height of the platform parts 213 is lower than the height of the upper surface of the lower die 210. The platform parts 213 are used to place the glass preform.

[0043] In this application, by providing the platform parts 213 with a height lower than the height of the upper surface of the lower die 210 for placing the glass preform, the placement stability of the glass preform can be ensured.

[0044] It should be noted that: in order to ensure the accuracy of the formed glass element, the opening width of the cavity 221 is smaller than the opening width of the injection cavity 212.

[0045] It should also be noted that: the thickness of the glass preform is equal to the distance between the platform portion 213 and the upper surface of the lower mold 210. Through the above settings, the stability of the glass preform can be ensured, and the glass preform can be prevented from floating and moving under the pressure of the molten metal, further improving the forming accuracy of the glass element.

[0046] Furthermore, the upper mold 220 is provided with at least one upper mold vent hole 222. At least one upper mold vent hole 222 penetrates through the upper mold 220 and is used to discharge the gas in the cavity 221 or inflate the cavity 221. By providing the upper mold vent hole 222, when the molten metal is filled into the cavity 221, the gas in the cavity 221 can be discharged, avoiding the problem that the molten metal cannot be filled due to too high air pressure in the cavity 221. At the same time, providing the upper mold vent hole 222 can also facilitate the removal of the formed glass element. Only by inflating the cavity 222 through the upper mold vent hole 222 can the glass element be quickly removed, which is convenient and fast.

[0047] Furthermore, the lower mold 210 is provided with at least one lower mold vent hole 214. At least one lower mold vent hole 214 penetrates through the lower mold 210 and is used to discharge the gas in the injection cavity 212 or inflate the injection cavity 212. By providing the lower mold vent hole 214, when the molten metal is filled into the injection cavity 212, the gas in the injection cavity 212 can be discharged, avoiding the problem that the molten metal cannot be filled due to too high air pressure in the injection cavity 212. At the same time, providing the lower mold vent hole 214 can also facilitate the molten metal to fall back into the melting furnace 100. Specifically: when the glass element is formed, only by inflating the injection cavity 212 through the lower mold vent hole 214 can the molten metal fall back into the melting furnace 100, avoiding the formation of negative pressure in the injection cavity 212 and the molten metal cannot flow back; furthermore, when the glass element is formed, by inflating the injection cavity 212 through the lower mold vent hole 214, the gas filled into the injection cavity 212 can hold the glass element to prevent the glass element from deforming, improving the yield rate of the glass element.

[0048] It should be understood that: the number and opening positions of the upper mold vent hole 222 and the lower mold vent hole 214 can be adjusted according to the sizes and shapes of the cavity 221 and the injection cavity 212 respectively, and are not limited herein.

[0049] Furthermore, as Figure 3As shown in the figure, the upper mold 220 includes an upper mold core 230 and an upper mold base 240. The upper mold base 240 includes an upper cavity. The upper mold core 230 is disposed in the upper cavity, and the upper mold core 230 is detachably connected to the upper mold base 240. A cavity 221 is formed on the upper mold core 230. The lower mold 210 includes a lower mold core 250 and a lower mold base 260. The lower mold base 260 includes a lower cavity. The lower mold core 250 is disposed in the lower cavity, and the lower mold core 250 is detachably connected to the lower mold base 260. An injection cavity 212 is formed on the lower mold core 250.

[0050] With the above settings, the manufacturing cost of the molding die 200 can be reduced, and the interchangeability of the molding die 200 can be improved. Specifically: Since the cavity 221 formed on the upper mold core 230 is the main factor determining the shape of the glass component, the lower mold core 250 is used to cooperate with the upper mold core 230 to form the glass component. The machining accuracy and material requirements of the upper mold core 230 and the lower mold core 250 are relatively high, while the upper mold base 240 and the lower mold base 260 do not directly contact the glass preform, and their accuracy and material requirements are relatively low. Therefore, in actual application, the upper mold core 230, the lower mold core 250, the upper mold base 240 and the lower mold base 260 can be machined separately, which has a lower manufacturing cost compared with the integral upper mold 220 and lower mold 210. At the same time, by setting the molding die 200 to be manufactured separately, when the mold core is damaged and the mold core is replaced, the molding die 200 can continue to be used. The operation is simple, the cost of replacing the entire molding die 200 is reduced, the production efficiency is improved, and the production cost is reduced.

[0051] Furthermore, as Figure 3 shown, a first sealing groove 231 is provided on the lower surface of the upper mold core 230 for placing a gasket to prevent the metal liquid from flowing out of the molding die 200.

[0052] Furthermore, as Figure 3 shown, the molding die 200 further includes a mold bushing 270. The mold bushing 270 includes an opening 271. The diameter of the opening 271 is the same as the diameter of the feed port 211, and the mold bushing 270 is detachably connected to the lower mold 210. Specifically, in some embodiments of the present application, the mold bushing 270 is detachably connected to the lower mold 210 by bolts. Since the feed port 211 is used to provide a flow path for the metal liquid, by setting the mold bushing 270, the wear of the feed port 211 itself can be reduced. When the mold bushing 270 is damaged and the mold bushing 270 is replaced, the molding die 200 can continue to be used. The operation is simple, and the cost of replacing the entire molding die 200 is further reduced. At the same time, the mold bushing 270 can also play a positioning role when the molding die 200 is installed.

[0053] Furthermore, as Figure 1As shown, in order to save labor, the molding die 200 further includes a hydraulic cylinder 280. The hydraulic cylinder 280 penetrates through the upper die 220 and abuts against the lower die 210. By pressurizing and depressurizing the hydraulic cylinder 280 through a controller, the closing and opening of the upper die 220 and the lower die 210 can be achieved, which is convenient and fast.

[0054] Further, as Figure 1 and Figure 2 shown, the melting furnace 100 further includes a second opening 120. The driving part 301 includes: a motor 310, a transmission system 320, and a lead screw 330. The motor 310 is used to provide a rotational driving force. One end of the transmission system 320 is fixedly connected to the output shaft of the motor 310, and the other end of the transmission system 320 is rotatably connected to the lead screw 330. The lead screw 330 is used to convert the rotational driving force provided by the motor into a linear driving force. The punch 302 is fixedly connected to one end of the lead screw 330 close to the pipe 400 and is used to move up and down under the drive of the lead screw 330. The lead screw 330 penetrates through the second opening 120, and the punch 302 extends into the molten metal to provide pressure for the molten metal.

[0055] It should be understood that: in order to avoid leakage of molten metal, the second opening 120 is cylindrical, and the diameter of the second opening 120 is the same as the outer diameter of the lead screw 330.

[0056] In this application, by setting the motor 310 and the lead screw 330 to control the moving distance of the punch 302, the control is precise, and the yield of glass components can be improved.

[0057] Preferably, the motor 310 is a servo motor. The servo motor has higher precision and stability compared to the stepper motor, and can control the moving distance of the punch 302 more precisely.

[0058] Further, as Figure 1 shown, the pipe of the pipe 400 close to the molding die 200 abuts against the bottom of the molding die 200. The first opening 110 is cylindrical, and the diameter of the pipe 400 is the same as the diameter of the first opening 110. The outer wall of the punch 302 abuts against the inner wall of the pipe 400.

[0059] In this application, by setting the diameter of the pipe 400 to be the same as the diameter of the first opening 110, the molten metal in the melting furnace 110 can be prevented from flowing out through the pipe 400 and the first opening 110, resulting in waste of molten metal; by setting the outer wall of the punch 302 to abut against the inner wall of the pipe 400, it can be ensured that the punch 302 can extend into the pipe 400 to provide pressure for the molten metal in the pipe 400, thereby ensuring that the glass preform can be formed into a glass component.

[0060] Further, the pipeline 400 includes a first vertical section 410, a parallel section 430, and a second vertical section 420, and the diameter of the first vertical section 410 is greater than the diameters of the parallel section 430 and the second vertical section 420. With the above settings, the pressure of the molten metal flowing to the forming die 200 can be increased, thereby ensuring the forming of the glass component.

[0061] Further, an inlet / outlet hole 411 is provided in the first vertical section 410 of the pipeline 400 for the molten metal to flow into or out of the pipeline 400.

[0062] It can be understood that the outer wall of the punch 302 is in contact with the inner wall of the first vertical section 410.

[0063] Further, as Figure 4 shown, the glass forming device further includes a protective die 500. The protective die 500 includes a cavity, and the forming die 200 is arranged in the cavity of the protective die 500. By providing the protective die 500 outside the forming die 200, the forming die 200 can be insulated, avoiding the technical problem that the operator cannot approach the forming die 200 when the temperature of the forming die 200 is too high.

[0064] Further, in order to improve the heat insulation effect of the protective die 500, in some embodiments of the present application, the glass forming device further includes a heat insulation pad 600 arranged between the protective die 500 and the forming die 200. By providing the heat insulation pad 600, the heat insulation property of the protective die 500 can be further improved.

[0065] It should be understood that: for the convenience of putting in and taking out the forming die 200, the protective die 500 includes a protective lower die 510 and a protective upper die 520 that cooperates with the protective lower die 510.

[0066] Further, as Figure 4 shown, the heat insulation pad 600 is arranged at the top and bottom of the forming die 200, and an inert gas is filled in the filling space 700 formed between the side surface of the protective die 500 and the side surface of the forming die 200 to prevent the oxygen in the air from oxidizing the molten metal, avoiding the deterioration of the molten metal and affecting the quality of the glass component. At the same time, the inert gas can also improve the heat insulation property of the protective die 500.

[0067] Further, a second sealing groove 511 is provided on the upper surface of the protective lower die 510, and a sealing pad is filled in the second sealing groove 511 to avoid the leakage of the inert gas and further improve the heat insulation property of the protective die 500.

[0068] It should also be understood that: in order to fill the protective die 500 with an inert gas, the protective die 500 is provided with at least one protective die gas injection hole 530 for filling the protective die 500 with an inert gas or discharging the inert gas in the protective die 500.

[0069] It should be noted that: Since the glass preform is pressure-formed by molten metal in this application, the softening temperature of the plastic metal should be lower than the melting point of the glass preform. Among them, the softening temperature of the glass preform is between 800 °C and 1000 °C. Therefore, the metal is one of zinc, tin or Babbitt alloy. The melting point of zinc is 420 °C, the melting point of tin is 230 °C, and the melting point of Babbitt alloy is 47 °C. In some embodiments of this application, the metal is tin.

[0070] Embodiment 2

[0071] This application provides a glass forming method, which is applicable to the glass forming device in Embodiment 1, as Figure 5 shown. The glass forming method includes:

[0072] S100. Place the preheated glass preform in the forming mold 200; specifically, place the preheated glass preform on the platform portion 213 of the lower mold 210, cover the upper mold 220 on the lower mold 210, and fixedly connect the upper mold 220 and the lower mold 210 through the hydraulic cylinder 280; among them, the preheating temperature of the glass is 200 °C to 400 °C;

[0073] S200. Heat the metal in the melting furnace 100 to melt it into molten metal; specifically, heat the melting furnace 100 through heating equipment, such as electric heating, electromagnetic or flame heating equipment;

[0074] S300. Apply pressure to the molten metal in the melting furnace 100 through the power mechanism 300, so that the molten metal is transferred to the forming mold 200 through the pipeline 400 to form the glass preform into a glass element; specifically: the motor 310 provides a forward rotation driving force, the lead screw 330 moves downward under the drive of the motor 310, and the punch 302 also moves downward under the drive of the lead screw 330. The punch 302 extends into the melting furnace 100 to provide pressure for the molten metal.

[0075] S400. Release the pressure on the molten metal in the melting furnace through the power mechanism 300, so that the molten metal flows back to the melting furnace 100 through the pipeline 400; specifically: the motor 310 provides a reverse rotation driving force, the lead screw 330 moves upward under the drive of the motor 310, and the punch 302 also moves upward under the drive of the lead screw 330 to provide pressure for the molten metal.

[0076] S500. Cool the glass element; it is convenient for the operator to take it out; and take out the glass element from the forming mold 200. Specifically: in order to avoid damaging the glass element during the taking-out process, inert gas can be filled into the cavity 221 to blow out the glass element, or a thimble can be used to hold the waste area around the glass element to push out the glass element.

[0077] It should be noted that in some embodiments of the present application, step S200 may be performed first, and then step S100.

[0078] Furthermore, in order to smoothly remove the glass element from the molding die 200 after the glass element is formed, in some embodiments of the present application, before step S100, a mold release agent may also be sprayed on the surface of the glass preform to avoid damage to the glass element during the demolding process.

[0079] Furthermore, step S300 includes:

[0080] S310: Quickly fill the molten metal to a position about 3 mm below the glass preform; the injection cavity 212 needs to exhaust gas synchronously to avoid air pressure in the injection cavity 212 causing the molten metal to be unable to be filled; wherein, the temperature of the molten metal is 800°C to 1000°C, which is the same as the softening temperature of the glass preform;

[0081] S320: Slowly fill the molten metal to the glass preform; through steps S310 and S320, the problems of the molten metal being filled too fast at one time, breaking the glass preform, and insufficient exhaust of the injection cavity 212 can be avoided, and the molding yield of the glass element can be improved;

[0082] S330: Stop pressurizing the molten metal, stay for 3 to 5 seconds, and heat the temperature of the glass preform to the same as the temperature of the molten metal;

[0083] S340: Fill the molten metal into the cavity 221 at a speed of 1 mm / s and a pressure of 2 to 5 Mpa to deform the glass preform; after the molten metal is filled, fill the tin liquid at a pressure of 2 to 5 Mpa to make the glass fully formed and consistent with the mold cavity;

[0084] S340: Keep the pressure of the molten metal for 2 to 4 seconds to form the glass preform into a glass element.

[0085] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the detailed descriptions of other embodiments above, and will not be elaborated here. Specifically in implementation, the above-mentioned various units or structures can be implemented as independent entities, or can be combined arbitrarily as the same or several entities, and will not be elaborated here.

[0086] The above has introduced in detail a glass molding device and method provided by the embodiments of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The descriptions of the above embodiments are only used to help understand the structure and core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A glass forming device, characterized in that: include: Furnaces, forming molds, power mechanisms and pipelines, The furnace is provided with a first opening, and the furnace heats the metal to melt it into molten metal and stores the molten metal; The pipeline includes a first vertical section, a parallel section, and a second vertical section. One end of the second vertical section extends out of the furnace through the first opening and is connected to the forming mold. One end of the first vertical section is suspended in the molten metal, and the other end is connected to the second vertical section through the parallel section. The pipeline is used to provide a flow channel for the molten metal, and the diameter of the first vertical section is larger than the diameters of the parallel section and the second vertical section. The power mechanism includes a driving portion and a punch fixedly connected to the driving portion, wherein the punch is suspended above the first vertical section, and the driving portion drives the punch to move in a direction approaching or away from the first vertical section to drive the molten metal to flow into or out of the forming die through the pipe; The forming mold includes a cavity, which is connected to the melting furnace through the pipe and allows the molten metal to flow in. The glass preform is fixed in the cavity and softened and formed under the action of the molten metal to form a glass element. The molding die includes a lower mold and an upper mold cooperating with the lower mold; the cavity includes an injection cavity provided on the lower mold and a mold cavity provided on the upper mold; the mold cavity and the injection cavity are opposite to each other and are used to provide a molding space for molding a glass preform; the lower mold is provided with a feed port, the pipeline is connected to the injection cavity through the feed port, the injection cavity is used to hold molten metal, and platforms are provided on both sides of the injection cavity, and the glass preform is placed on the platforms; Wherein, the opening width of the mold cavity is smaller than the opening width of the injection cavity; The lower mold is provided with at least one lower mold vent hole, which runs through the lower mold and is used to discharge the gas in the injection cavity or to inflate the injection cavity; the height of the platform portion is lower than the height of the upper surface of the lower mold.

2. The glass forming device according to claim 1, wherein: The upper mold is provided with at least one upper mold vent hole, and the at least one upper mold vent hole runs through the upper mold and is used to discharge the gas in the mold cavity or to inflate the mold cavity.

3. The glass forming device according to claim 1, wherein: The upper mold includes an upper mold core and an upper mold base, the upper mold base includes an upper cavity, the upper mold core is arranged in the upper cavity, and the upper mold core and the upper mold base are detachably connected, and the mold cavity is formed on the upper mold core; the lower mold includes a lower mold core and a lower mold base, the lower mold base includes a lower cavity, the lower mold core is arranged in the lower cavity, and the lower mold core and the lower mold base are detachably connected, and the injection cavity is formed on the lower mold core.

4. The glass forming device according to claim 3, wherein: A first sealing groove is provided on the lower surface of the upper mold core for placing a sealing gasket to prevent molten metal or gas from flowing out of the forming mold.

5. The glass forming device according to claim 1, wherein: The forming mold further includes a mold bushing, which includes an opening, the diameter of the opening is the same as the diameter of the feed port, and the mold bushing is detachably connected to the lower mold.

6. The glass forming device according to claim 1, wherein: The furnace also includes a second opening, and the driving part includes: a motor, a transmission system and a screw. The motor is used to provide a rotational driving force. One end of the transmission system is fixedly connected to the output shaft of the motor, and the other end of the transmission system is rotatably connected to the screw. The screw is used to convert the rotational driving force provided by the motor into a linear driving force. The punch is fixedly connected to one end of the screw close to the pipe and is used to move up and down driven by the screw. The screw passes through the second opening, and the punch extends into the molten metal.

7. The glass forming device according to claim 6, characterized in that The outer wall of the pipe close to one end of the forming die is fitted to the first opening, and the outer wall of the punch is fitted to the inner wall of the pipe.

8. The glass forming device according to claim 1, wherein: The glass forming device further comprises a protective mold, the protective mold comprises a cavity, and the forming mold is arranged in the cavity of the protective mold.

9. A glass forming method using the glass forming device according to any one of claims 1 to 8, characterized in that: include: placing a preheated glass preform in a forming mold; Heat the metal in the furnace and melt it into liquid metal; Applying pressure to the molten metal in the furnace through a power mechanism so that the molten metal is transferred to the forming mold through a pipeline to shape the glass preform to form a glass element. This step includes the following sub-steps: Quickly fill the molten metal to a position 3mm below the glass preform; the injection cavity needs to be vented simultaneously to avoid air pressure in the injection cavity that may cause the molten metal to be unable to be filled; Slowly fill the molten metal into the glass preform; Stop pressurizing the molten metal and wait for 3 to 5 seconds to heat the glass preform to the same temperature as the molten metal; Fill the mold cavity with molten metal at a speed of 1 mm / s and a pressure of 2 to 5 MPa to deform the glass preform. After the molten metal is filled, fill it with tin liquid at a pressure of 2 to 5 MPa to fully shape the glass into the mold cavity. Maintaining the pressure of the molten metal for 2 to 4 seconds to shape the glass preform into a glass component; Relieving the pressure of the molten metal in the furnace by a power mechanism so that the molten metal flows back to the furnace through the pipeline; The glass element is cooled and removed from the forming mold.

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