Vacuum ultrasonic vibration auxiliary infrared heating multi-energy-field precision glass mold pressing device

Abstract

The invention relates to the field of optical glass production equipment, in particular to a vacuum ultrasonic vibration auxiliary infrared heating multi-energy-field precise glass mold pressing device which comprises an upper mold base and an ultrasonic vibration element which are coaxially arranged, and the machining face of the upper mold base and the machining face of the ultrasonic vibration element below the upper mold base are oppositely arranged. Two rows of U-shaped infrared radiation heating elements arranged up and down are evenly and circumferentially arranged in the vacuum cavity periphery heating furnace, and a temperature feedback unit is installed on the machining plane of the upper die base. According to the vacuum ultrasonic vibration auxiliary infrared heating multi-energy-field precise glass mold pressing device, the ultrasonic vibration element, the U-shaped infrared radiation heating elements and the temperature feedback unit are matched with one another, and working parameters of the ultrasonic vibration element and the U-shaped infrared radiation heating elements are precisely controlled through computer programming; and high-efficiency and high-quality preparation of the glass optical element can be realized.

Description

Technical Field

[0001] The invention relates to the field of optical glass production equipment, in particular to a vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device. Background Art

[0002] Glass molding machine is an important mechanical equipment for glass molding, mainly used to manufacture various optical glasses and other glass products. The multi-energy field glass molding machine places the glass on an ultrasonic vibration module and heats it to a certain temperature through infrared radiation, then applies a certain pressure to quickly obtain the desired shape.

[0003] The precision glass molding devices in the prior art cannot realize fast and high-quality molding, filling and forming processing of complex micro-nano optical glass elements with large aspect ratios. Summary of the invention

[0004] In order to solve the above problems, a vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device is proposed. The present invention solves the problem that the prior art cannot realize fast and high-quality molding, filling and forming processing of complex optical glass elements with large aspect ratio.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device comprises an upper loading component, a lower loading component, a heating furnace, a quartz cover, an upper mold base and an ultrasonic vibration element, wherein the heating furnace is located between the upper loading component and the lower loading component, the heating furnace comprises a quartz cover forming a vacuum cavity inside, the upper mold base and the ultrasonic vibration element are both located in a space enclosed by the quartz cover, an upper mold base is arranged below the upper loading component, an ultrasonic vibration element is arranged on the top of the lower loading component, and a vibration generating component of the ultrasonic vibration element is vertically opposite to the upper mold base.

[0006] Preferably, the heating furnace further comprises a plurality of U-shaped infrared radiation heating elements, two rows of U-shaped infrared radiation heating elements arranged vertically are evenly arranged in a circumferential manner in the heating furnace, each row of the U-shaped infrared radiation heating elements is fixed to the inner wall of the heating furnace by a ceramic fixing clip, and the U-shaped infrared radiation heating elements are arranged in a circular array with the upper mold base and the ultrasonic vibration element as the center.

[0007] Preferably, the upper part of the heating furnace has an upper water cooling module, the quartz cover is connected to the upper water cooling module through a quartz cover fixing clamp, and the upper loading assembly includes an upper mold pressing shaft, which passes through the upper water cooling module into the vacuum chamber and is connected to the upper mold base.

[0008] Preferably, the upper die base processing plane is provided with a plurality of mounting holes, which are arranged in a circular array on the upper die base processing plane with the axis of the upper die base and the lower ultrasonic vibration element as the center, and a temperature feedback unit is installed in each mounting hole.

[0009] Preferably, the outside of the heating furnace has a spiral cooling pipe for cooling the heating furnace.

[0010] Preferably, the lower loading assembly includes a molded loading shaft, a lower water cooling module is provided below the heating furnace, and the molded loading shaft passes through the lower water cooling module and is connected to the ultrasonic vibration element.

[0011] Preferably, the upper loading assembly comprises a linear actuator, an upper cover plate is mounted on the lower end of the linear actuator, and the heating furnace is fixed to the upper cover plate by a screw rod.

[0012] Preferably, the vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device also includes a vacuum pump and a nitrogen production system. The vacuum pump is connected to the vacuum chamber through an upper loading assembly. The vacuum pump is used to evacuate the vacuum chamber. The nitrogen production system is connected to the vacuum chamber and is used to transport nitrogen into the vacuum chamber to maintain a non-oxidizing environment.

[0013] Preferably, the vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device also includes a cooling system, and the cooling system is connected to the external cooling system of the heating furnace through a pipeline.

[0014] Preferably, the feed load resolution of the mold-pressing loading shaft is 0.1N, and the positioning accuracy is 0.1μm; the load range of the mold-pressing loading shaft is 0 to 15KN.

[0015] The beneficial effects of using the present invention are: The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device adopts the mutual cooperation of ultrasonic vibration elements and multiple U-shaped infrared radiation heating elements and temperature feedback units, and accurately controls the working parameters of the ultrasonic vibration elements and the U-shaped infrared heating elements through computer programming, so as to realize high-efficiency and high-quality preparation of glass optical elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device of the present invention.

[0017] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device of the present invention.

[0018] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0019] Reference numerals include: 1-Cooling system, 2-Vacuum pump, 3-System control module, 4-Casing, 5-Heating furnace, 6-Cooling pipe, 7-Nitrogen production system, 8-Aviation plug electrode, 9-Upper mold shaft, 10-Linear actuator, 11-Screw rod, 12-Quartz cover, 13-Mold loading shaft, 14-Upper water cooling module, 15-Upper cover, 16-Lower water cooling module, 17-Mold loading shaft connecting flange, 18-Mold loading mechanism, 19-Quartz cover fixing clamp, 20-Ceramic fixing clamp, 21-Temperature feedback unit, 22-Upper mold base, 23-Vacuum chamber, 24-U-type infrared radiation heating element, 25-Ultrasonic vibration element. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the technical solution more clear, the technical solution is further described in detail below in conjunction with specific implementation methods. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

[0021] In order to solve the problem that the precision glass molding device in the prior art cannot realize the rapid and high-quality molding filling and molding of complex micro-nano optical glass components with large aspect ratio, such as Figure 1 As shown, this embodiment proposes a vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device, which is mainly composed of a cooling system 1, a vacuum pump 2, a nitrogen generation system 7 and a molding device body. The molding device body includes a system control module 3, which is used to servo-control the electronic equipment and power equipment inside the molding device body, so that the necessary processing conditions for multi-energy field precision glass molding are formed inside the molding device body. The molding device body includes a shell 4, which serves as a frame structure of the molding device body, wherein the system control module 3 is located at the upper part of the shell 4, and a working platform for placing main components is provided in the middle position of the shell 4, wherein a heating furnace 5 is located on the working platform, and a cooling pipe 6 is provided on the outer jacket of the heating furnace 5. Multi-energy field precision glass molding is carried out in the heating furnace 5, and the cooling pipe 6 arranged outside the heating furnace 5 is connected to the cooling system 1 through a pipeline, and the cooling system 1 servo-flows a cooling medium into the cooling pipe 6 to ensure that the outer wall of the heating furnace 5 is kept at the working temperature.

[0022] like Figure 2 As shown, in this embodiment, an upper mold pressing shaft 9 and a linear actuator 10 are arranged above the heating furnace 5, and the upper mold pressing shaft 9 and the linear actuator 10 constitute an upper loading assembly, and a system power and auxiliary control element, a mold loading shaft 13 and a mold loading mechanism 18 are arranged below the heating furnace 5.

[0023] The upper part of the equipment platform is the glass molding loading area, and a vacuum chamber 23 is formed inside the outer quartz cover 12, which is composed of the outer quartz cover 12, the upper water cooling module 14, the lower water cooling module 16, the upper mold pressing shaft 9 and the molding loading shaft 13. The quartz cover 12 is connected to the upper water cooling module 14 through the quartz cover fixing clamp 19, and the upper water cooling module 14 is installed on the upper cover plate 15. The upper mold base 22, the temperature feedback unit 21 and the ultrasonic vibration element 25 are arranged inside the vacuum chamber 23. The nitrogen making system 7 and the vacuum pump 2 are connected to the vacuum chamber 23 through the upper mold pressing shaft 9 and the molding loading shaft 13. The vacuum pump 2 is used to evacuate the vacuum chamber 23, and the nitrogen making system 7 is used to transport nitrogen into the vacuum chamber 23 to maintain a non-oxidizing environment.

[0024] The outside of the vacuum chamber 23 is a heating furnace 5, and two rows of U-shaped infrared radiation heating elements 24 arranged up and down are evenly arranged in a circumference in the heating furnace 5. The U-shaped infrared radiation heating elements 24 are fixed to the inner wall of the heating furnace 5 by a ceramic fixing clip 20, and the heating furnace 5 is fixed to the upper cover plate 15 by a screw 11. In this embodiment, after the U-shaped infrared radiation heating element 24 is powered on by the system control module 3, the U-shaped infrared radiation heating element 24 forms heat radiation through the quartz cover 12, and heats the mold and the glass material inside the mold to make the temperature reach the preset processing temperature. In this application, the cooling pipe 6 outside the heating furnace 5, and the upper water cooling module 14 and the lower water cooling module 16 in other directions of the heating furnace 5 are connected to the cooling system 1 through a pipeline. In the process of infrared heating multi-energy field precision glass molding, the upper water cooling module 14, the lower water cooling module 16 and the cooling pipe 6 can circulate the refrigerant and protect the heating furnace 5 around the heating furnace 5.

[0025] In this embodiment, the upper cover plate 15 is connected to the linear actuator 10 , and the linear actuator 10 drives the upper cover plate 15 to move up and down to close and protect the upper cover plate 15 outside the heating furnace 5 .

[0026] The upper die pressing shaft 9 passes through the upper water cooling module 14 and enters the vacuum chamber 23 to be connected to the upper die base 22. The die pressing loading shaft 13 passes through the lower water cooling module 16 and is connected to the ultrasonic vibration element 25. Specifically, the die pressing loading shaft 13 and the die pressing loading mechanism 18 are connected through the die pressing loading shaft connecting flange 17. In addition, a plurality of mounting holes are provided on the processing plane of the upper die base 22. The mounting holes are evenly arranged on the circumference of the processing plane of the upper die base 22 with the axis of the upper die base 22 and the lower ultrasonic vibration element 25 as the center. A temperature feedback unit 21 is installed in each mounting hole. The temperature feedback unit 21 and the ultrasonic vibration element 25 are connected to the system control module 3 through the aerial plug electrode 8.

[0027] The upper die pressing shaft 9 is used to drive the upper die holder 22 to apply die pressing. The die pressing loading shaft 13 can drive the ultrasonic vibration element 25 to move so as to adjust the distance between the ultrasonic vibration element 25 and the upper die holder 22.

[0028] As a preference, in this embodiment, part of the upper die pressing shaft 9, part of the die pressing loading shaft 13, the cooling pipe 6 of the heating furnace 5, the upper water cooling module 14 and the lower water cooling module 16 are all connected to the water cooling system through pipelines. Since the heating furnace 5 maintains a relatively high temperature, in this embodiment, the outer wall of the vacuum chamber 23 and the part of the upper die pressing shaft 9 that penetrates into the heating furnace 5 and the part of the die pressing loading shaft 13 that penetrates into the heating furnace 5 are all provided with water cooling passages to avoid loss of matching accuracy and processing accuracy, as well as damage to the equipment.

[0029] In this embodiment, precise regulation within the range of 0 to 15 KN can be achieved between the upper mold base 22 and the ultrasonic vibration element 25, the ultrasonic vibration element 25 can achieve frequency control above 20 kHz, and the infrared radiation heating element can achieve single-channel control. Through closed-loop control, the temperature fluctuation of the infrared radiation heating element within the range of 0.5°C can be achieved. By establishing a control model of the heating system, rapid and precise regulation of the internal temperature of the vacuum chamber 23 can be achieved.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present technical content. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of this patent.

Claims

1. A vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device, characterized in that: The invention comprises an upper loading assembly, a lower loading assembly, a heating furnace, a quartz cover, an upper mold base and an ultrasonic vibration element, wherein the heating furnace is located between the upper loading assembly and the lower loading assembly, the heating furnace comprises a quartz cover forming a vacuum chamber inside, the upper mold base and the ultrasonic vibration element are both located in a space enclosed by the quartz cover, an upper mold base is arranged below the upper loading assembly, an ultrasonic vibration element is arranged on the top of the lower loading assembly, and a vibration generating component of the ultrasonic vibration element is vertically opposite to the upper mold base.

2. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 1 is characterized in that: The heating furnace also includes a plurality of U-shaped infrared radiation heating elements, two rows of U-shaped infrared radiation heating elements arranged vertically and evenly arranged in a circle in the heating furnace, each row of the U-shaped infrared radiation heating elements is fixed to the inner wall of the heating furnace by a ceramic fixing clip, and the U-shaped infrared radiation heating elements are arranged in a circular array with the upper mold base and the ultrasonic vibration element as the center.

3. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 2 is characterized in that: The upper part of the heating furnace is provided with an upper water cooling module, the quartz cover is connected to the upper water cooling module through a quartz cover fixing clamp, and the upper loading assembly comprises an upper die pressing shaft, which passes through the upper water cooling module, enters the vacuum chamber and is connected to the upper die seat.

4. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 3 is characterized in that: The upper die base processing plane is provided with a plurality of mounting holes, which are arranged in a circular array on the upper die base processing plane with the axis of the upper die base and the lower ultrasonic vibration element as the center, and a temperature feedback unit is installed in each mounting hole.

5. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 2 is characterized in that: The heating furnace has a spiral cooling pipe on the outside for cooling the heating furnace.

6. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 2 is characterized in that: The lower loading assembly comprises a molded loading shaft, a lower water cooling module is arranged below the heating furnace, and the molded loading shaft passes through the lower water cooling module and is connected to the ultrasonic vibration element.

7. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 2 is characterized in that: The upper loading assembly comprises a linear actuator, an upper cover plate is installed at the lower end of the linear actuator, and the heating furnace is fixed to the upper cover plate through a screw rod.

8. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 1 is characterized in that: The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device also includes a vacuum pump and a nitrogen production system. The vacuum pump is connected to the vacuum chamber through an upper loading component. The vacuum pump is used to evacuate the vacuum chamber. The nitrogen production system is connected to the vacuum chamber and is used to transport nitrogen into the vacuum chamber to maintain a non-oxidizing environment.

9. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 1, characterized in that: The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device also includes a cooling system, and the cooling system is connected to the external cooling system of the heating furnace through a pipeline.

10. The vacuum ultrasonic vibration assisted infrared heating multi-energy field precision glass molding device according to claim 6, characterized in that: The feed load resolution of the die-stamping loading axis is 0.1N, and the positioning accuracy is 0.1μm; the load range of the die-stamping loading axis is 0 to 15KN.

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