Optical glass press with gas-liquid supercharging

Abstract

The utility model discloses a kind of optical glass presses with gas-liquid pressurization, it is related to optical glass press technical field, including bearing frame, first hydraulic cylinder, material placing table, guide plate and limiting silk;Pressure mechanism is arranged above the bearing frame, the pressure mechanism includes top plate, guide rod, bottom plate, first hydraulic cylinder and second hydraulic cylinder, the second hydraulic cylinder is set above top plate, the first hydraulic cylinder is set below bottom plate, the bottom plate is installed below bearing frame, the top plate is installed above guide rod, the guide rod is installed above bearing frame, the first hydraulic cylinder and second hydraulic cylinder are all using external hydraulic drive assembly, the pressure relief nozzle on piston sleeve, pressure relief head can be adjusted pressure relief according to demand, prevent the pressure in cavity from being too high and damaging equipment;Valve bead in first interface, second interface and check claw avoid gas-liquid backflow, guarantee equipment operation safety;Multiple sizes replaceable pressure relief head, adapt to different pressing demand, improve equipment applicability.

Description

Technical Field

[0001] This utility model relates to the field of optical glass press technology, specifically to an optical glass press with gas-liquid pressurization. Background Technology

[0002] An optical glass press is a core piece of equipment used for the precision molding of optical glass components. It heats the glass preform at high temperature and applies pressure to shape it in a mold. The specific process is as follows: the glass preform is placed into the forming chamber, the forming chamber is closed and a vacuum is drawn (in some cases, nitrogen is required), then the glass is heated to a deformable state using an infrared heating device, while the pressure is accurately controlled by a pressure sensor. The mold presses the glass into the desired shape, and finally the lens is cooled and removed. The precision optical glass press described in application number CN202220310263.2 facilitates unloading of the formed glass through a cooling ring, preventing damage to the outer circumference. When the second ball bearing wears out due to frequent use, the threaded design of the functional sleeve allows for timely removal and replacement. However, there is still room for improvement in terms of safety protection and forming stability control: Firstly, the equipment lacks clear safety protection devices, such as a pressure relief mechanism for excessive pressure within the chamber during pressing, and a check valve to prevent backflow of fluid in the gas-liquid transmission system. A sudden pressure surge or gas-liquid backflow during production could lead to overload damage to equipment components, or even safety hazards. Secondly, due to the lack of precise control and compensation design for pressure distribution, uneven force distribution between the upper and lower molds during pressing can cause excessive or insufficient local pressure on the glass blank, resulting in forming abnormalities such as dimensional deviations in the formed parts, internal stress concentration, and uneven optical performance, thus affecting the product qualification rate. Based on this, this solution proposes "an optical glass press with gas-liquid pressurization" to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an optical glass press with gas-liquid pressurization to solve the problem mentioned in the background art that existing equipment on the market may experience sudden pressure rise or gas-liquid backflow during production, which may lead to overload damage to equipment components or even safety hazards.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an optical glass press with gas-liquid pressurization, comprising a support frame, a first hydraulic cylinder, a material feeding platform, a guide plate, and a limiting wire; A pressure mechanism is provided above the support frame. The pressure mechanism includes a top plate, a guide rod, a bottom plate, a first hydraulic cylinder, and a second hydraulic cylinder. The second hydraulic cylinder is located above the top plate, and the first hydraulic cylinder is located below the bottom plate. The bottom plate is installed below the support frame, the top plate is installed above the guide rod, and the guide rod is installed above the support frame. Both the first and second hydraulic cylinders use external hydraulic drive components.

[0005] As a preferred technical solution of this utility model, the support frame is fixedly connected to the guide rod. The guide rod is divided into upper and lower parts. The diameter of the lower part of the guide rod is 1.3 times that of the upper part. The bottom of the guide rod is fixedly connected to the base plate. The center line of the base plate is fixedly connected to the first hydraulic cylinder. The telescopic shaft end above the first hydraulic cylinder is fixedly connected to the second drive plate. Four cylinders are evenly arranged above the second drive plate for pressing and forming. By adopting the above technical solution, the support frame and guide rod are fixedly connected, ensuring the stability of the guide rod after installation and providing reliable support for the overall structure of the press. This prevents the equipment's operating accuracy from being affected by the loosening of the guide rod. The lower part of the guide rod has a diameter 1.3 times that of the upper part. This differential diameter design enhances the load-bearing capacity of the lower part of the guide rod, better withstands the load from the base plate and the first hydraulic cylinder, and extends the service life of the guide rod. The first hydraulic cylinder is fixedly connected at the center line of the base plate, which allows the driving force of the first hydraulic cylinder to be evenly transmitted to the second drive plate, avoiding the impact of force deviation on the pressing effect. The four cylinders evenly arranged above the second drive plate can realize multi-point synchronous pressing of optical glass, ensuring uniform force on all parts of the glass, reducing problems such as glass deformation and cracking caused by uneven local force, and significantly improving the pass rate and product quality of optical glass pressing.

[0006] As a preferred technical solution of this utility model, the upper surface of the support frame is fixedly connected to the material placement platform, the material placement platform is fixed by four circular brackets, and the gap between the material placement platform and the support frame is filled with heat insulation material. The upper surface of the material placement platform has four forming cavities, and the forming cavities have a trumpet-shaped structure. Using the above technical solution, the upper surface of the support frame is fixed to the material placement platform by four circular brackets. The four brackets provide stable support to the material placement platform from multiple directions, ensuring that the platform will not shift or shake during press operation, thus guaranteeing the stable placement of optical glass raw materials. The gap between the material placement platform and the support frame is filled with heat insulation material, which can effectively block the heat generated during the pressing process from being transferred to the support frame, preventing structural aging and performance degradation of the support frame due to long-term heat exposure, extending the overall service life of the equipment, and reducing heat loss. This also helps maintain a stable temperature around the material placement platform, preventing temperature fluctuations from adversely affecting the physical properties and molding effect of the optical glass. The four horn-shaped openings on the upper surface of the material placement platform form cavities, facilitating the rapid placement and positioning of the optical glass raw materials, guiding the raw materials accurately into the molding area, and allowing the glass raw materials to flow fully and fill the molding cavities during the pressing process. This ensures higher dimensional accuracy and more regular shape of the molded optical glass, reducing the difficulty and cost of subsequent processing.

[0007] As a preferred technical solution of this utility model, a guide plate is fixedly connected above the guide rod, and four circular through holes are evenly opened on the surface of the guide plate for the piston sleeve to pass through; The above technical solution provides a stable mounting base for the piston sleeve by fixing the guide plate above the guide rod. The four circular through holes evenly opened on the surface of the guide plate can accurately guide the piston sleeve, ensuring that the piston sleeve maintains a stable trajectory during its up and down movement and avoiding deviation or tilting. This not only ensures that the piston sleeve is accurately connected to the forming cavity below, further improving the precision of optical glass pressing and forming, but also reduces frictional wear between the piston sleeve and other components, extends the service life of the piston sleeve, and reduces equipment maintenance costs.

[0008] As a preferred technical solution of this utility model, the top end of the guide rod is fixedly connected to the top plate, the upper surface of the top plate is fixedly connected to the second hydraulic cylinder, the lower telescopic shaft end of the second hydraulic cylinder is fixedly connected to the first drive plate, the first drive plate is an I-shaped structure, and the first drive plate is slidably connected to the guide rod; The above technical solution provides a stable mounting platform for the second hydraulic cylinder by fixing the top plate at the top of the guide rod, ensuring that the second hydraulic cylinder will not shake or shift during operation and ensuring stable and accurate pressure output. The second hydraulic cylinder, fixed to the upper surface of the top plate, has an I-shaped first drive plate fixed to its telescopic shaft end. This first drive plate has sufficient strength and rigidity to withstand the pressing force while effectively reducing its own weight, lowering the driving load of the second hydraulic cylinder, and reducing energy consumption. Furthermore, the first drive plate is slidably connected to the guide rod, which provides good limiting and guiding for the up-and-down movement of the first drive plate. This ensures that the first drive plate drives the subsequent components to move smoothly, avoiding deviation and ensuring the smoothness and accuracy of the pressing action. At the same time, it reduces vibration and noise during the movement process, improving the working environment of the equipment.

[0009] As a preferred technical solution of this utility model, the piston rod is bolted to the bottom of the first drive plate, and there are four piston rods arranged in a straight line. A piston sleeve is fitted under the piston rod, and the bottom of the piston rod has a conical structure that matches the molding cavity. Using the above technical solution, the piston rod is fixed to the bottom of the first drive plate by bolts. The bolt connection method is convenient for installation and disassembly, facilitating subsequent maintenance and replacement of the piston rod, and reducing the difficulty and cost of equipment maintenance. The four piston rods arranged in a straight line correspond one-to-one with the four forming cavities on the material placement platform and the four through holes on the guide plate, enabling simultaneous pressing of multiple sets of optical glass, greatly improving production efficiency and meeting the needs of mass production. The conical structure at the bottom of the piston rod fits into the forming cavity, ensuring a tight fit between the piston rod and the forming cavity. This allows the pressure of the second hydraulic cylinder to be transmitted evenly and effectively to the optical glass raw material, ensuring that the raw material fully fills every corner of the forming cavity. This guarantees that the shape and dimensional accuracy of the formed optical glass product meet the design requirements, reducing product defects and improving product quality.

[0010] As a preferred embodiment of this utility model, a fixing ring is fitted onto the surface of the piston sleeve, a pressure relief nozzle is slidably connected to the side of the fixing ring, and a pressure relief head is movably connected above the pressure relief nozzle. The pressure relief head is made of metal and has various configuration sizes for replacement. A threaded groove is opened on the inner wall of the pressure relief head, and a pair of limiting screws are fixedly connected to the inner wall of the pressure relief head. A first interface is fixedly connected to one side of the piston sleeve, and the first interface has an external thread structure facing upward. A second interface is fixedly connected to the other side of the piston sleeve, and the second interface has an external thread structure facing downward. An air filter is threadedly connected below the second interface. The air filter is covered with heat insulation material. A first valve ball and a second valve ball are respectively configured in the second interface and the first interface, and check claws are fixedly connected in both the second interface and the first interface, with the check claws facing the same direction.

[0011] The above technical solution utilizes a fixing ring on the piston sleeve surface to provide stable installation support for the pressure relief nozzle, ensuring its fixed position during operation. The metal pressure relief head, movably connected above the nozzle, possesses excellent strength and high-temperature resistance, adapting to the harsh working environment of the press and extending its service life. Its interchangeable design with various configuration sizes allows for adjustment of pressure relief specifications to meet different pressing requirements, enhancing equipment applicability. The threaded grooves and limiting screws on the inner wall of the pressure relief head facilitate precise connection and fixation between the pressure relief head and the nozzle, preventing loosening and instability during pressure relief. The first and second ports on both sides of the piston sleeve, with their different orientations and external threaded structures, facilitate connection to external pipelines. The first and second valve balls and check claws within the ports effectively prevent gas-liquid backflow, ensuring unidirectional and stable gas-liquid transmission and preventing backflow from affecting normal equipment operation. The air filter connected below the second port is covered with heat-insulating material. This material filters impurities from the gas entering the equipment, protecting internal components. The heat-insulating material reduces the impact of heat on the air filter, extending its service life and further ensuring stable equipment operation.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. From the perspective of structural stability, the support frame is fixedly connected to the guide rod, and the diameter of the lower part of the guide rod is 1.3 times that of the upper part, which not only ensures the stable installation of the guide rod, but also enhances its lower load-bearing capacity; the first hydraulic cylinder is fixed to the center line of the bottom plate and the second hydraulic cylinder is fixed to the top plate, providing a stable installation platform for the hydraulic cylinder, ensuring stable pressure output, and avoiding the impact of loose or offset components on the overall stability of the equipment during operation; 2. Regarding the improvement of pressing precision, four cylinders are evenly arranged above the second drive plate, and four piston rods arranged in a straight line are bolted below the first drive plate. The conical structure at the bottom of the piston rods matches the cavity of the horn on the material placement platform, realizing multi-point synchronous pressing and precise docking of components. The through hole of the guide plate guides the piston sleeve, and the first drive plate is slidably connected to the guide rod, further ensuring the stability of the component's movement trajectory during the pressing process, reducing deformation and defects in the glass due to uneven force or positional deviation, and improving the forming precision and product quality of optical glass. 3. In terms of production efficiency, the corresponding design of four cylinders, four piston rods and four forming cavities supports the synchronous pressing of multiple sets of optical glass, which greatly improves production efficiency and meets the needs of mass production; the horn-shaped forming cavity facilitates the placement and positioning of raw materials, reduces the difficulty of demolding, and the bolt-connected piston rods facilitate maintenance and replacement, reduce equipment downtime, and indirectly improve production continuity. 4. Regarding the extension of equipment lifespan, the space between the material placement platform and the support frame is filled with heat insulation material, and the outside of the air filter is covered with heat insulation material to block heat transfer and prevent the support frame and air filter from aging due to long-term heat exposure; the guide structure reduces component friction loss, and the metal pressure relief head is wear-resistant and high-temperature resistant. The durable design of each component together extends the overall service life of the equipment and reduces maintenance costs. 5. In terms of safety and applicability, the pressure relief nozzle and pressure relief head on the piston sleeve can be adjusted to relieve pressure as needed, preventing excessive pressure in the cavity from damaging the equipment; the valve balls and check claws in the first and second interfaces prevent gas and liquid backflow, ensuring safe operation of the equipment; and the pressure relief heads of various sizes can be replaced to adapt to different pressure requirements, improving the applicability of the equipment. Attached Figure Description

[0013] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the support frame and the first hydraulic cylinder of this utility model; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a schematic diagram of the piston sleeve and retaining ring structure of this utility model; Figure 5 This is a schematic diagram of the anti-return claw and the first interface structure of this utility model; Figure 6 This is a schematic diagram of the pressure relief nozzle and pressure relief head of this utility model.

[0014] In the diagram: 1. Support frame; 2. First hydraulic cylinder; 3. Material placement platform; 4. Guide plate; 5. First drive plate; 6. Top plate; 7. Guide rod; 8. Second hydraulic cylinder; 9. Bottom plate; 10. Forming cavity; 11. Second drive plate; 12. Piston rod; 13. Piston sleeve; 14. Fixing ring; 15. Air filter; 16. Pressure relief nozzle; 17. Pressure relief head; 18. First valve ball; 19. Second valve ball; 20. Check pawl; 21. First interface; 22. Second interface; 23. Limit screw. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6The technical solution of this utility model includes: a support frame 1, a first hydraulic cylinder 2, a material placement platform 3, a guide plate 4, a first drive plate 5, a top plate 6, a guide rod 7, a second hydraulic cylinder 8, a bottom plate 9, a forming cavity 10, a second drive plate 11, a piston rod 12, a piston sleeve 13, a fixing ring 14, an air filter 15, a pressure relief nozzle 16, a pressure relief head 17, a first valve ball 18, a second valve ball 19, a check claw 20, a first interface 21, a second interface 22, and a limiting screw 23; A pressure mechanism is installed above the support frame 1. The pressure mechanism includes a top plate 6, a guide rod 7, a bottom plate 9, a first hydraulic cylinder 2, and a second hydraulic cylinder 8. The second hydraulic cylinder 8 is located above the top plate 6, and the first hydraulic cylinder 2 is located below the bottom plate 9. The bottom plate 9 is installed below the support frame 1, and the top plate 6 is installed above the guide rod 7. The guide rod 7 is installed above the support frame 1. Both the first hydraulic cylinder 2 and the second hydraulic cylinder 8 adopt external hydraulic drive components.

[0017] The support frame 1 is fixedly connected to the guide rod 7. The guide rod 7 consists of two parts, upper and lower. The diameter of the lower part of the guide rod 7 is 1.3 times that of the upper part. The bottom of the guide rod 7 is fixedly connected to the base plate 9. The center of the base plate 9 is fixedly connected to the first hydraulic cylinder 2. The telescopic shaft end above the first hydraulic cylinder 2 is fixedly connected to the second drive plate 11. Four cylinders are evenly arranged on the upper part of the second drive plate 11 to press and form the support frame 1 and the guide rod 7. This ensures the stability of the guide rod 7 after installation and provides reliable support for the overall structure of the press, preventing the equipment's operating accuracy from being affected by the loosening of the guide rod 7. The diameter of the lower part of the guide rod 7 is 1.3 times that of the upper part. This differentiated diameter design enhances the load-bearing capacity of the lower part of the guide rod 7, better withstands the load from the base plate 9 and the first hydraulic cylinder 2, and extends the service life of the guide rod 7. The first hydraulic cylinder 2 is fixedly connected to the center line of the base plate 9, which allows the driving force of the first hydraulic cylinder 2 to be evenly transmitted to the second drive plate 11, avoiding the impact of force deviation on the pressing effect. The four cylinders evenly arranged above the second drive plate 11 can realize multi-point synchronous pressing of optical glass, ensuring that the force on each part of the glass is uniform, reducing problems such as glass deformation and cracking caused by uneven local force, and significantly improving the pass rate and product quality of optical glass pressing and forming. The upper surface of the support frame 1 is fixedly connected to the material placement platform 3, which is secured by four circular brackets. The gap between the material placement platform 3 and the support frame 1 is filled with heat-insulating material. Four forming cavities 10 are formed on the upper surface of the material placement platform 3, and these cavities are funnel-shaped. The material placement platform 3 is fixed to the upper surface of the support frame 1 by the four circular brackets. These four brackets provide stable support to the material placement platform 3 from multiple directions, ensuring that it will not shift or shake during press operation, thus guaranteeing the stable placement of the optical glass raw materials. The gap between the material placement platform 3 and the support frame 1 is filled with heat-insulating material, which effectively prevents the heat generated during the pressing process from flowing to the support frame. The frame 1 is used for transfer, which avoids structural aging and performance degradation of the support frame 1 due to long-term heat exposure, thus extending the overall service life of the equipment. At the same time, it can also reduce heat loss and maintain a stable temperature around the material placement platform 3, avoiding adverse effects of temperature fluctuations on the physical properties and molding effect of optical glass. The four horn-shaped openings on the upper surface of the material placement platform 3 form a cavity 10, which facilitates the rapid placement and positioning of optical glass raw materials, guides the raw materials to accurately enter the molding area, and allows the glass raw materials to flow fully and fill the molding cavity 10 during the pressing process, ensuring higher dimensional accuracy and more regular shape of the molded optical glass, and reducing the difficulty and cost of subsequent processing. A guide plate 4 is fixedly connected above the guide rod 7. Four circular through holes are evenly opened on the surface of the guide plate 4 for the piston sleeve 13 to pass through. The guide plate 4 fixedly connected above the guide rod 7 provides a stable installation base for the movement of the piston sleeve 13. The four circular through holes evenly opened on the surface of the guide plate 4 can play a precise guiding role for the piston sleeve 13, ensuring that the piston sleeve 13 maintains a stable trajectory during the up and down movement, avoiding deviation, tilting and other situations. This not only ensures that the piston sleeve 13 is accurately connected to the lower forming cavity 10, further improving the precision of optical glass pressing and forming, but also reduces frictional wear between the piston sleeve 13 and other components, extends the service life of the piston sleeve 13, and reduces equipment maintenance costs. The top of the guide rod 7 is fixedly connected to the top plate 6, and the upper surface of the top plate 6 is fixedly connected to the second hydraulic cylinder 8. The lower telescopic shaft end of the second hydraulic cylinder 8 is fixedly connected to the first drive plate 5. The first drive plate 5 has an I-shaped structure and is slidably connected to the guide rod 7. The top plate 6, which is fixedly connected to the top of the guide rod 7, provides a stable mounting platform for the second hydraulic cylinder 8, ensuring that the second hydraulic cylinder 8 will not shake or shift during operation, and ensuring that its pressure output is stable and accurate. The second hydraulic cylinder 8, which is fixed to the upper surface of the top plate 6, and the I-shaped first drive plate 5, which is fixed to the telescopic shaft end of the second hydraulic cylinder 8, have sufficient strength and rigidity to withstand the pressing force, while effectively reducing its own weight, reducing the driving load of the second hydraulic cylinder 8, and reducing energy consumption. Furthermore, the first drive plate 5 is slidably connected to the guide rod 7, and the guide rod 7 can play a good limiting and guiding role in the up and down movement of the first drive plate 5, ensuring that the first drive plate 5 drives the subsequent components to move smoothly, avoiding deviation, ensuring the smoothness and accuracy of the pressing action, and reducing vibration and noise during the movement, thus improving the working environment of the equipment. Piston rods 12 are bolted to the bottom of the first drive plate 5. There are four piston rods 12 arranged in a straight line. Piston sleeves 13 are fitted under the piston rods 12. The bottom of the piston rods 12 has a conical structure that fits into the forming cavity 10. The piston rods 12 are fixed to the bottom of the first drive plate 5 by bolts. The bolt connection method is convenient for installation and disassembly, which facilitates the subsequent maintenance and replacement of the piston rods 12 and reduces the difficulty and cost of equipment maintenance. The four piston rods 12 arranged in a straight line correspond one-to-one with the four forming cavities 10 on the material platform 3 and the four through holes on the guide plate 4. This allows for the simultaneous pressing of multiple sets of optical glass, which greatly improves production efficiency and meets the needs of mass production. The conical structure at the bottom of the piston rods 12 fits into the forming cavity 10, which allows the piston rods 12 to fit tightly into the forming cavity 10. This ensures that the pressure of the second hydraulic cylinder 8 is transmitted evenly and effectively to the optical glass raw material, ensuring that the raw material fully fills all corners of the forming cavity 10. This ensures that the shape and dimensional accuracy of the formed optical glass product meet the design requirements, reduces product defects, and improves product quality. A retaining ring 14 is fitted onto the surface of the piston sleeve 13. A pressure relief nozzle 16 is slidably connected to the side of the retaining ring 14. A pressure relief head 17 is movably connected above the pressure relief nozzle 16. The pressure relief head 17 is made of metal and comes in various sizes for interchangeability. A threaded groove is formed on the inner wall of the pressure relief head 17, and a pair of limiting screws 23 are fixedly connected to the inner wall of the pressure relief head 17. A first interface 21 is fixedly connected to one side of the piston sleeve 13, and the first interface 21 has an upward-facing external thread structure. A second interface 22 is fixedly connected to the other side of the piston sleeve 13. The second port 22 has an external thread structure facing downwards, and the air filter 15 is threadedly connected to the lower part of the second port 22. The air filter 15 is covered with heat insulation material. The first valve ball 18 and the second valve ball 19 are respectively installed in the second port 22 and the first port 21. Check pawls 20 are fixedly connected to both the second port 22 and the first port 21. The check pawls 20 face the same direction. The fixing ring 14 fitted on the surface of the piston sleeve 13 provides stable installation support for the pressure relief nozzle 16, ensuring that the pressure relief nozzle 16 is fixed in position during operation. The pressure relief nozzle 16 is movably connected to the upper part. The pressure relief head 17 is made of metal, which has good strength and high temperature resistance, can adapt to the harsh environment of the press, and extends its service life. The design allows for multiple interchangeable configurations and sizes, enabling the equipment to adjust its pressure relief specifications according to different pressing needs, thus improving its applicability. The threaded grooves and limiting screws 23 on the inner wall of the pressure relief head 17 facilitate precise connection and fixation between the pressure relief head 17 and the pressure relief nozzle 16, preventing the pressure relief head 17 from loosening and causing unstable pressure relief during the pressure relief process. The first interface 21 and the second interface 22 on both sides of the piston sleeve 13 have different orientations and external thread structures, facilitating connection to external pipelines. The first valve ball 18, the second valve ball 19, and the check claw 20 inside the interface effectively prevent gas-liquid backflow, ensuring the unidirectional and stable transmission of gas and liquid, and avoiding the impact of fluid backflow on the normal operation of the equipment. The air filter 15 connected below the second interface 22 is covered with heat insulation material. The air filter 15 filters impurities in the gas entering the equipment, protecting internal components. The heat insulation material reduces the impact of heat on the air filter 15, extending its service life and further ensuring stable operation of the equipment. Working principle: When using an optical glass press with gas-liquid pressurization, the equipment inspection and raw material placement work must be completed first. Before starting the equipment, it is necessary to confirm that the external hydraulic drive components of the first hydraulic cylinder 2 and the second hydraulic cylinder 8 are operating normally. Remove the air filter 15. The external gas-liquid system is connected to the piston sleeve 13 through the first interface 21. Check that the connection between the support frame 1 and the guide rod 7, the piston rod 12 and the first drive plate 5, and other components is secure. At the same time, select the appropriate size of the pressure relief head 17 according to the pressing requirements and fix it precisely to the pressure relief nozzle 16 through the limit screw 23. Then, the optical glass raw material is placed into the four horn-shaped cavities 10 of the material placement platform 3. The material placement platform 3 is fixed by four circular supports and the space between it and the support frame 1 is filled with heat insulation material, which can not only ensure the stable placement of the raw material, but also isolate the heat generated by subsequent pressing. After the equipment is ready, it enters the pressure drive and component linkage stage. The external hydraulic drive assembly is activated. The first hydraulic cylinder 2 drives upward, causing the second drive plate 11 to rise. The second hydraulic cylinder 8 drives downward, pushing the first drive plate 5 down along the guide rod 7. The diameter of the lower part of the guide rod 7 is 1.3 times that of the upper part, which can stably bear the upper and lower loads and ensure structural stability. When the first drive plate 5 descends, the four piston rods 12 below move down synchronously. Guided by the circular through hole of the guide plate 4, they drive the piston sleeve 13 to move smoothly until the conical structure at the bottom of the piston rod 12 fits into the forming cavity 10. At the same time, the cylinder of the second drive plate 11 lifts the bottom of the forming cavity 10, forming a bidirectional pressing posture. Next is the gas-liquid pressurization and precision pressing stage. The external gas-liquid system inputs the gas-liquid mixture into the piston sleeve 13 through the first interface 21. The second valve ball 19 and the check claw 20 ensure unidirectional gas-liquid entry. The first valve ball 18 and the check claw 20 achieve unidirectional pressure holding, providing continuous pressurization support for the piston rod 12. The first hydraulic cylinder 2 and the second hydraulic cylinder 8 continuously apply pressure. The I-shaped first drive plate 5 reduces the drive load. The dual guidance of the guide rod 7 and the guide plate 4 ensures the precision of the pressing trajectory. The raw material fully fills the forming cavity 10, forming a high-precision optical glass prototype. After pressing is completed, the pressure relief protection stage begins. The external hydraulic system stops outputting pressure, and the pressure relief nozzle 16 on the side of the piston sleeve 13 starts to release pressure. The metal pressure relief head 17 cooperates with the pressure relief nozzle 16 through the inner wall thread groove to slowly release the gas and liquid pressure, avoiding sudden pressure drop that could damage the glass. During the pressure relief process, the gas and liquid flow back through the first interface 21 and the second interface 22. The check claw 20 closes in the opposite direction to prevent impurities from entering. The heat insulation material on the outside of the air filter 15 protects it from high temperature and filters backflow gas and liquid impurities, extending the life of equipment components. Finally, the components are reset and the finished product is processed. The first hydraulic cylinder 2 retracts the telescopic shaft downward, driving the second drive plate 11 to reset. The second hydraulic cylinder 8 retracts the telescopic shaft upward, pulling the first drive plate 5, piston rod 12 and piston sleeve 13 back to their initial positions. Then, the finished optical glass is taken out from the molding cavity 10, and the residual debris on the surface of the molding cavity 10 is cleaned. Due to the effect of the heat insulation material, the temperature of the material placement platform 3 is safe, and the next batch of raw materials can be placed directly to achieve continuous production.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical glass press with gas-liquid pressurization, comprising a support frame (1); characterized in that: A pressure mechanism is provided above the support frame (1). The pressure mechanism includes a top plate (6), a guide rod (7), a bottom plate (9), a first hydraulic cylinder (2), and a second hydraulic cylinder (8). The second hydraulic cylinder (8) is located above the top plate (6), and the first hydraulic cylinder (2) is located below the bottom plate (9). The bottom plate (9) is installed below the support frame (1), and the top plate (6) is installed above the guide rod (7). The guide rod (7) is installed above the support frame (1). Both the first hydraulic cylinder (2) and the second hydraulic cylinder (8) are external hydraulic drive components.

2. The optical glass press with gas-liquid pressurization according to claim 1, characterized in that, The support frame (1) is fixedly connected to the guide rod (7). The guide rod (7) is divided into two parts: upper and lower. The diameter of the lower part of the guide rod (7) is 1.3 times that of the upper part. The bottom of the guide rod (7) is fixedly connected to the base plate (9). The center line of the base plate (9) is fixedly connected to the first hydraulic cylinder (2). The telescopic shaft end above the first hydraulic cylinder (2) is fixedly connected to the second drive plate (11). Four cylinders are evenly arranged above the second drive plate (11) for pressing and forming.

3. The optical glass press with gas-liquid pressurization according to claim 2, characterized in that, The upper surface of the support frame (1) is fixedly connected to the material placement platform (3), which is fixed by four circular brackets. The gap between the material placement platform (3) and the support frame (1) is filled with heat insulation material. The upper surface of the material placement platform (3) has four forming cavities (10), and the forming cavities (10) are in the shape of a trumpet.

4. An optical glass press with gas-liquid pressurization according to claim 3, characterized in that, The guide rod (7) is fixedly connected to the guide plate (4), and four circular through holes are evenly opened on the surface of the guide plate (4) for the piston sleeve (13) to pass through.

5. An optical glass press with gas-liquid pressurization according to claim 4, characterized in that, The top of the guide rod (7) is fixedly connected to the top plate (6), the upper surface of the top plate (6) is fixedly connected to the second hydraulic cylinder (8), the lower telescopic shaft end of the second hydraulic cylinder (8) is fixedly connected to the first drive plate (5), the first drive plate (5) is an I-shaped structure, and the first drive plate (5) is slidably connected to the guide rod (7).

6. An optical glass press with gas-liquid pressurization according to claim 5, characterized in that, The piston rod (12) is bolted to the bottom of the first drive plate (5). There are four piston rods (12) arranged in a straight line. The piston sleeve (13) is fitted under the piston rod (12). The bottom of the piston rod (12) has a conical structure that matches the molding cavity (10).

7. An optical glass press with gas-liquid pressurization according to claim 6, characterized in that, The piston sleeve (13) is fitted with a retaining ring (14). The retaining ring (14) is slidably connected to a pressure relief nozzle (16) on its side. A pressure relief head (17) is movably connected above the pressure relief nozzle (16). The pressure relief head (17) is made of metal and has multiple configuration sizes for replacement. The inner wall of the pressure relief head (17) has a threaded groove, and a pair of limiting screws (23) are fixedly connected to the inner wall of the pressure relief head (17). A first interface (21) is fixedly connected to one side of the piston sleeve (13), and the first interface (21) faces upward. The piston sleeve (13) has an external thread structure. The other side of the piston sleeve (13) is fixedly connected to the second interface (22). The second interface (22) has an external thread structure facing downwards. The air filter (15) is threadedly connected to the bottom of the second interface (22). The air filter (15) is covered with heat insulation material. The second interface (22) and the first interface (21) are respectively equipped with a first valve ball (18) and a second valve ball (19). The second interface (22) and the first interface (21) are both fixedly connected with check claws (20). The check claws (20) face the same direction.

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