A vacuum atmosphere annealing device for the production of optical glass lenses

Abstract

The present invention discloses a vacuum atmosphere annealing device for the production of optical glass lenses, belonging to the technical field of glass product annealing. It includes a sliding table and a furnace body fixedly installed in the middle of its upper end. On both the left and right sides of the furnace body, there is a feeding structure installed on the sliding table and horizontally slid by a first electric guide rail; The present invention is provided with a feeding structure composed of a heat preservation sleeve and a material rack on both the left and right sides of the furnace body. During the annealing operation, one of the material racks with glass lenses placed on it is pushed into the furnace body for vacuum atmosphere heating treatment. After the heating operation is completed, the material rack is retracted into the heat preservation sleeve. During this process, the gas in the furnace body surges into the heat preservation sleeve to achieve subsequent heat preservation and cooling treatment under atmosphere protection, improving the quality of the product after annealing. When the furnace body is in an idle state, the other material rack is pushed into the furnace body, and the two material racks operate alternately. The heat preservation and cooling treatment do not occupy the space of the furnace body, effectively improving the annealing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of glass product annealing, and more specifically, to a vacuum atmosphere annealing device for the production of optical glass lenses. Background Art

[0002] From the perspective of the production process of optical glass, it includes several key steps such as melting, forming, annealing, and inspection. Among them, annealing is a very crucial step, which refers to slowly heating the metal to a certain temperature, maintaining it for a sufficient time, and then cooling it at an appropriate speed. Vacuum annealing is to evacuate the air during heating or fill the surrounding of the workpiece with a protective gas, so as to avoid the oxidation of the workpiece during heating.

[0003] After retrieval, the patent number CN118272618A discloses "A Titanium Alloy Vacuum Stress Relief Annealing Device and Annealing Process". During the annealing process, the titanium alloy workpiece rolls inside the material frame, so that the titanium alloy workpiece is heated evenly. After the titanium alloy workpiece is heated and left stationary inside the outer shell for a period of time, the electric push rod is controlled to move the titanium alloy workpiece out of the outer shell. Subsequently, the motor is controlled to reverse, so that the fan blades rotate to blow air on the titanium alloy workpiece, accelerating the cooling work of the titanium alloy workpiece, and thus improving the annealing efficiency.

[0004] Although this patent can achieve uniform heating and cooling of the workpiece, during the cooling process, pushing the titanium alloy workpiece out of the outer shell and using the blowing method for heat dissipation, on the one hand, it fails to achieve slow temperature-controlled cooling, making it difficult to ensure the mechanical properties of the product. Secondly, without atmosphere protection, the surface of the product is prone to oxidation and decarburization, reducing the product quality. In addition, during the annealing process of the workpiece by this device, only one round of annealing can be carried out at a time. After the product is pulled out of the outer shell, the next round of annealing operation can only be carried out after the cooling work is completed and the material is unloaded.

[0005] Therefore, in view of the above problems, we propose a vacuum atmosphere annealing device for the production of optical glass lenses. Summary of the Invention

[0006] The purpose of the present invention is to solve existing practical problems. Compared with the prior art, a vacuum atmosphere annealing device for the production of optical glass lenses is provided. By arranging a feeding structure composed of a heat insulation sleeve and a material rack on both the left and right sides of the furnace body, during the annealing work, one of the material racks with glass lenses placed on it is pushed into the furnace body for vacuum atmosphere heating treatment. After the heating work is completed, the material rack is retracted into the heat insulation sleeve. During this process, the gas in the furnace body surges into the heat insulation sleeve, realizing subsequent heat preservation and cooling treatment under atmosphere protection, improving the quality of the product after annealing. When the furnace body is in an idle state, the other material rack is pushed into the furnace body, and the two material racks operate alternately. The heat preservation and cooling treatment do not occupy the space of the furnace body, effectively improving the annealing efficiency.

[0007] The object of the present invention can be achieved by the following technical solutions: A vacuum atmosphere annealing device for the production of optical glass lenses, including a sliding table and a furnace body fixedly installed in the middle of its upper end. Electric heating tubes are installed on the inner walls around the furnace body. On both the left and right sides of the furnace body, there are feeding structures installed on the sliding table and horizontally slid by a first electric guide rail. The feeding structure includes a heat preservation sleeve installed on a pair of first electric guide rails. Inside the heat preservation sleeve, a material rack that can move horizontally is installed through a pair of second electric guide rails distributed vertically.

[0008] Sealing ring sleeves that are fixedly connected to the ends of the material rack and hermetically connected are provided at both the left and right ends of the furnace body. The inner end wall of one of the sealing ring sleeves is rotationally connected to a gas supply structure communicated with it. An air storage tank is provided outside the furnace body and is connected to the inside of the sealing ring sleeve through an air inlet pipe. The air inlet pipe is connected to the air outlet of the air storage tank. The inside of the furnace body is also connected to the air inlet of the air storage tank through an air outlet pipe.

[0009] Further, the material rack includes a pair of sealing discs, which are connected by a fixed shaft between the pair of sealing discs. One of the sealing discs is installed between a pair of first electric guide rails. A plurality of material rods are annularly distributed on the pair of sealing discs.

[0010] Further, an annular groove with an open upper end is provided on each material rod, and a material placing groove for embedding and installing glass lenses is provided at the bottom end of the annular groove.

[0011] Further, a plurality of air permeation holes are provided on the end wall of the material rod. The left and right ends of the material rod are rotatably installed on the end walls of a pair of sealing discs, and the plurality of material rods are annularly distributed. A plurality of material placing grooves are provided on the material rod, and a plurality of glass lenses to be processed are placed on the material placing grooves one by one. The material rack is pushed into the furnace body for annealing. The multiple groups of glass lenses are annularly distributed and uniformly heated. After annealing and cooling, the material rod can be rotated downward to the side one by one. A flexible material receiving plate is placed below the side of the material rod. After the material rod tilts to one side, it is convenient to pour and collect the multiple glass lenses downward as a whole.

[0012] Further, a first through groove for embedding and connecting the end of the gas supply structure is provided on the inner end wall of one of the sealing ring sleeves. The inner end of the air inlet pipe penetrates the furnace body, the sealing ring sleeve and is connected to the first through groove.

[0013] Further, the gas supply structure includes an air vent ring rotatably sleeved at the first through groove. A second through groove communicated with the first through groove is provided at the inner end of the air vent ring. A plurality of air vent pipes communicated with the second through groove are annularly distributed at the outer end of the air vent ring. A plurality of jet nozzles are horizontally distributed in the direction of the axis of the furnace body for the plurality of air vent pipes.

[0014] Further, a driven gear is fixedly sleeved on the outer end wall of the ventilation ring, a transmission gear meshed with the driven gear is rotatably installed on the outer end wall of the furnace body, and a driving motor for rotating and driving the transmission gear is fixedly installed at the outer end wall of the furnace body.

[0015] The present invention also provides a use method of a vacuum atmosphere annealing device for optical glass lens production, including the following steps:

[0016] Step 1: Loading treatment, placing the glass lens on the material placing groove of the material rack;

[0017] Step 2: First-round heating treatment, after pushing the material rack into the furnace body, evacuating the furnace body to a certain vacuum degree and heating it, and then filling the gas supply structure with protective gas through the air inlet pipe. During the gas supply process, the ventilation ring drives the multi-group ventilation pipes to rotate, and the protective gas is evenly ejected from the multi-group ventilation pipes towards the material rack;

[0018] Step 3: First-round heat preservation and cooling treatment, after the heating treatment is completed, retracting the material rack into the heat preservation sleeve. During the retraction process of the material rack, the gas in the furnace body surges into the heat preservation sleeve, and the glass lens is heat-preserved and slowly cooled under the action of the protective atmosphere;

[0019] Step 4: Second-round annealing treatment, during the first-round heat preservation and cooling process of the glass lens, pushing another material rack with glass lenses placed thereon into the furnace body, and so on in a cycle, and the glass lenses on the two material racks are alternately annealed;

[0020] Step 5: Unloading treatment, after the glass lens is slowly cooled in Step 3, pushing the heat preservation sleeve together with the material rack outwards, and then using the second electric guide rail to push the material rack out of the outer side of the end of the heat preservation sleeve towards the side close to the furnace body to unload the glass lens on the material rack.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] (1) In this solution, a feeding structure composed of a heat preservation sleeve and a material rack is arranged on both the left and right sides of the furnace body. During the annealing work, one of the material racks with glass lenses placed thereon is pushed into the furnace body for heating treatment, and during the heating process, the glass lenses of another material rack are loaded. After the heating work of the glass lens is completed, the material rack is retracted into the heat preservation sleeve until the outer sealing disc is retracted to the sealing ring sleeve adjacent to the heat preservation sleeve. During the retraction process of the material rack, the gas in the furnace body surges into the heat preservation sleeve, realizing subsequent heat preservation and cooling treatment under atmosphere protection, improving the quality of the product after annealing. When the furnace body is in an idle state, another material rack is pushed into the furnace body for heating treatment, and the two material racks operate alternately, and the heat preservation and cooling treatment do not occupy the space of the furnace body, effectively improving the annealing efficiency.

[0023] (2) The gas supply structure in this solution includes a rotatably mounted ventilation ring and a plurality of ventilation pipes annularly distributed horizontally in the furnace body. During the heating process, by driving the ventilation ring to rotate, the ventilation ring drives multiple groups of ventilation pipes to rotate synchronously, which is beneficial to evenly eject the protective gas in the ventilation pipes from all around to the material rack. The protruding ventilation pipes have a stirring effect on the gas in the furnace body, improving the gas flowability, and can ensure the uniform distribution of temperature and protective atmosphere in the furnace, thereby enhancing the effect and consistency of material heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a schematic structural diagram of another perspective of the present invention;

[0026] Figure 3 is a cross-sectional view of the present invention when pushing the heated glass lens from the material rack into the heat preservation sleeve;

[0027] Figure 4 is a schematic structural diagram of the joint between the heat preservation sleeve and the material rack of the present invention;

[0028] Figure 5 is a schematic structural diagram of another perspective of the joint between the heat preservation sleeve and the material rack of the present invention;

[0029] Figure 6 is a partial schematic structural diagram of the material rod of the present invention;

[0030] Figure 7 is a schematic structural diagram of the present invention after loading the glass lens onto the material rack;

[0031] Figure 8 is a schematic structural diagram of the furnace body of the present invention;

[0032] Figure 9 is an internal cross-sectional view of the furnace body of the present invention;

[0033] Figure 10 is a schematic structural diagram of the joint between the sealing ring sleeve and the gas supply structure of the present invention;

[0034] Figure 11 is a schematic structural diagram of the present invention when the sealing ring sleeve is detached from the gas supply structure;

[0035] Figure 12 is a schematic structural diagram of another perspective of the present invention when the sealing ring sleeve is detached from the gas supply structure;

[0036] Figure 13 is a partial cross-sectional view of the present invention when heating the glass lens on one of the material racks;

[0037] Figure 14 This is a cross-sectional view of the present invention after the heated glass lens is completely pushed into the heat preservation sleeve by the material rack;

[0038] Figure 15 This is a schematic external structure view of the present invention after another material rack loaded with glass blanks is pushed into the furnace body.

[0039] Description of the reference numerals in the figure:

[0040] 1. Furnace body; 2. Slide table; 3. Heat preservation sleeve; 4. Material rack; 41. Sealing disc; 42. Material rod; 421. Material discharging groove; 5. First electric guide rail; 6. Second electric guide rail; 7. Sealing ring sleeve; 701. First through groove, first through groove; 8. Ventilation ring; 801. Second through groove, second through groove; 9. Ventilation pipe; 901. Jet nozzle; 10. Air inlet pipe; 11. Air outlet pipe; 12. Air storage tank; 13. Driven gear; 14. Driving gear; 15. Driving motor. Specific embodiments

[0041] 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1: The present invention discloses a vacuum atmosphere annealing device for the production of optical glass lenses. Please refer to Figures 1 - 3 , which includes a slide table 2 and a furnace body 1 fixedly installed in the middle of the upper end of the slide table 2. Electric heating tubes are installed on the inner walls around the furnace body 1. The electric heating tubes are in a tubular structure coiled along the inner wall of the furnace body 1, which is beneficial to realizing uniform temperature distribution in the furnace body 1. Feeding structures horizontally slid by the first electric guide rails 5 are provided on both the left and right sides of the furnace body 1 and are installed on the slide table 2;

[0043] The feeding structure includes a heat preservation sleeve 3 installed on a pair of first electric guide rails 5. The pair of first electric guide rails 5 are horizontally installed on the slide table 2. A material rack 4 that can move horizontally is installed in the heat preservation sleeve 3 through a pair of second electric guide rails 6 distributed up and down. The pair of second electric guide rails 6 are vertically installed on the upper and lower inner walls of the heat preservation sleeve 3.

[0044] Please refer to Figures 4 - 7 , the material rack 4 includes a pair of sealing discs 41, which are connected by a fixed shaft between the pair of sealing discs 41. One of the sealing discs 41 is installed between the pair of first electric guide rails 5. A plurality of material rods 42 are annularly distributed on the pair of sealing discs 41. An annular groove with an upper opening is provided on each material rod 42, and a material discharging groove 421 for embedding and installing glass lenses is provided at the bottom end of the annular groove;

[0045] A plurality of air vent holes are provided on the end wall of the material rod 42. Both the left and right ends of the material rod 42 are rotatably installed on the end walls of a pair of sealing discs 41. The plurality of material rods 42 are annularly distributed, and a plurality of discharging grooves 421 are provided on the material rod 42. The air vent holes provided on the material rod 42 are conducive to uniformly heating the glass lenses on the material rod 42;

[0046] During the heating operation, the material rod 42 is in a stable state, and the opening of the annular groove of the material rod 42 faces upward. Place the plurality of glass lenses to be processed one by one on the discharging grooves 421. Please refer to Figure 3 and Figure 13 , push the material rack 4 into the furnace body 1 for annealing. The multiple groups of glass lenses are annularly distributed and uniformly heated;

[0047] Sealing ring sleeves 7 fixedly connected to the end portions of the material rack 4 in a sealed manner are provided at both the left and right ends of the furnace body 1. The sealing ring sleeves 7 match the sealing discs 41 at the outer end portions of the material rack 4. After the material rack 4 is pushed into the furnace body 1, the end portion of the heat preservation sleeve 3 abuts against the outside of the sealing ring sleeve 7 adjacent to one side of it, and the sealing disc 41 on the side away from the heat preservation sleeve 3 is hermetically fitted with the sealing ring sleeve 7 on the other side, so as to realize hermetically placing the material rack 4 in the furnace body 1 for heat treatment.

[0048] A gas supply structure communicated with it is rotatably connected to the inner end wall of one of the sealing ring sleeves 7. An air storage tank 12 communicated with the inside of the sealing ring sleeve 7 through an air inlet pipe 10 is provided outside the furnace body 1. The air inlet pipe 10 is connected to the air outlet of the air storage tank 12. The inside of the furnace body 1 is also connected to the air inlet of the air storage tank 12 through an air outlet pipe 11. After the material rack 4 is pushed into the furnace body 1, the inside of the furnace body 1 is evacuated to a certain vacuum degree, and the electric heating tubes uniformly distributed on the inner end wall of the furnace body 1 are used for heating and heat preservation. Then, a protective gas such as high-purity nitrogen is filled into the gas supply structure through the air inlet pipe 10. During the gas supply process, the ventilation ring 8 drives the multiple groups of ventilation pipes 9 to rotate, and the protective gas is uniformly ejected from the multiple groups of ventilation pipes 9 towards the material rack 4.

[0049] Please refer to Figure 14 , after the heat treatment is completed, the material rack 4 is retracted into the heat preservation sleeve 3 through a pair of second electric guide rails 6 until the sealing disc 41 at the outer end retracts to the sealing ring sleeve 7 adjacent to one side of it. During the retraction process of the material rack 4, the air outlet pipe 11 is closed, and the gas in the furnace body 1 surges into the heat preservation sleeve 3. This process can also draw the protective gas inside the furnace body 1 into the heat preservation sleeve 3 by means of an existing air extraction structure, so that the glass lenses are heat-preserved in the heat preservation sleeve 3 and slowly cooled under the action of the protective atmosphere. Slowly cooling in the protective atmosphere can effectively prevent the surface oxidation of the glass lenses and improve the quality of the product after annealing.

[0050] After the furnace body 1 is in an idle state, the first electric guide rail 5 is used to push the rack 4 at the front end of another set of heat preservation sleeves 3 into the furnace body 1. The end of the heat preservation sleeve 3 abuts against the outer end of the adjacent sealing ring sleeve 7. The sealing disc 41 at the front end of the rack 4 is fitted into the sealing ring sleeve 7 and abuts against the sealing disc 41 on the other set of heat-treated racks 4. The width of the sealing ring sleeve 7 is greater than the sum of the widths of a pair of sealing discs 41, so that during the heat preservation and cooling process of the glass lenses on one set of racks 4, the glass lenses on the other set of racks 4 are in a heating state. In this way, the glass lenses on the two sets of racks 4 are alternately annealed, making the best use of space and time to effectively improve the annealing efficiency.

[0051] After annealing and cooling, the first electric guide rail 5 is used to push the heat preservation sleeve 3 together with the rack 4 outwards, and then the second electric guide rail 6 is used to push the rack 4 towards the furnace body 1. The rack 4 is pushed out of the outer side of the end of the heat preservation sleeve 3, which is convenient for the blanking operation.

[0052] During the blanking process, it should be added that a rotating groove for the rotational embedding of the material rod 42 is provided on the sealing disc 41. The end of the material rod 42 is rotationally and frictionally connected to the rotating groove. A gear transmission structure can also be added to the end of the material rod 42. Under normal conditions, the material rod 42 is in a stable state. During blanking, a flexible blanking plate is placed below the side of the material rod 42, and the material rod 42 is rotated towards the side and downward with force to unlock the fixed installation method of the material rod 42. After the material rod 42 tilts to one side, it is convenient to pour and collect multiple glass lenses downward as a whole.

[0053] Embodiment 2: A through groove 701 for the embedding and connection of the end of the air supply structure is provided on the inner end wall of the sealing ring sleeve 7. The inner end of the air inlet pipe 10 penetrates through the furnace body 1 and the sealing ring sleeve 7 and is connected and communicated with the through groove 701. The air supply structure includes an air vent ring 8 rotatably sleeved at the through groove 701. A through groove 801 connected to the through groove 701 is provided at the inner end of the air vent ring 8. A plurality of air vent pipes 9 connected to the through groove 801 are annularly distributed at the outer end of the air vent ring 8. A plurality of air jet nozzles 901 are horizontally distributed in the direction of the axis of the furnace body 1 for the plurality of air vent pipes 9. The plurality of air vent pipes 9 are installed inside the electric heating tube and outside the material rod 42. When the material rod 42 is pushed into the furnace body 1, it does not affect the operation of the electric heating tube and the air vent pipes 9.

[0054] A driven gear 13 is fixedly sleeved on the outer end wall of the ventilation ring 8, and a transmission gear 14 meshing with the driven gear 13 is rotatably installed on the outer end wall of the furnace body 1. A driving motor 15 for rotationally driving the transmission gear 14 is fixedly installed on the outer end wall of the furnace body 1. During the heating process, by driving the ventilation ring 8 to rotate, the ventilation ring 8 drives multiple groups of ventilation pipes 9 to rotate synchronously, which is beneficial for the protective gas in the ventilation pipes 9 to be evenly sprayed from all sides to the material rack 4, and the extended ventilation pipes 9 have a stirring effect on the gas in the furnace body 1, thereby improving the fluidity of the atmosphere and ensuring that the temperature and protective atmosphere are evenly distributed in the furnace, thereby improving the effect and consistency of the heat treatment of the material.

[0055] In combination with Example 1 and Example 2, the present invention further provides a method for using a vacuum atmosphere annealing device for producing optical glass lenses, comprising the following steps:

[0056] Step 1: Loading treatment. In the initial state, a pair of heat preservation sleeves 3 are located outside the furnace body 1, a pair of material racks 4 are exposed outside, and the ends of the pair of material racks 4 are sealed and docked with the outer ends of a pair of sealing ring sleeves 7, and a plurality of glass lenses to be processed are placed one by one on the material discharge slots 421 of the material racks 4;

[0057] Step 2: The first round of heating treatment, the material rack 4 is pushed into the furnace body 1 through the second electric guide rail 6 until the end of the insulation sleeve 3 is sleeved and connected with the sealing ring sleeve 7 on the adjacent side, and the front sealing disk 41 is sleeved and connected with the sealing ring sleeve 7 on the other side, so that the glass lens on the material rack 4 is sealed in the furnace body 1;

[0058] The furnace body 1 is evacuated to a certain vacuum degree, and the electric heating tubes evenly distributed on the inner end wall of the furnace body 1 are used for heating and heat preservation, and then a protective gas such as high-purity nitrogen is filled into the gas supply structure through the gas inlet pipe 10. During the gas supply process, the ventilation ring 8 drives the multiple groups of ventilation pipes 9 to rotate, and the protective gas is evenly sprayed from the multiple groups of ventilation pipes 9 toward the material rack 4;

[0059] Step 3: After the first round of heat preservation and cooling treatment, the material rack 4 is retracted into the heat preservation sleeve 3 through the second electric guide rail 6 until the sealing disk 41 at the outer end is retracted to the sealing ring sleeve 7 on the side adjacent to it. During the retraction process of the material rack 4, the gas outlet pipe 11 is closed, and the gas in the furnace body 1 flows into the heat preservation sleeve 3. In this process, the protective gas inside the furnace body 1 can also be sucked into the heat preservation sleeve 3 with the help of the existing suction structure, and the glass lens is kept warm and slowly cooled down under the action of the protective atmosphere;

[0060] Step 4: The second round of annealing treatment. During the first round of heat preservation and cooling of the glass lenses, another group of racks 4 with glass lenses are pushed into the furnace body 1. This cycle is repeated, and the glass lenses on the two groups of racks 4 are annealed alternately.

[0061] Step Five: Blanking Processing. After the glass lens slowly cools down in Step Four, the first electric guide rail 5 is used to push the heat preservation sleeve 3 together with the material rack 4 outwards, and then the second electric guide rail 6 is used to push the material rack 4 towards the furnace body 1. The material rack 4 is pushed out of the outer side of the end of the heat preservation sleeve 3, which facilitates the blanking of the glass lens on the material rack 4.

[0062] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A vacuum atmosphere annealing device for producing optical glass lenses, comprising a slide table (2) and a furnace body (1) fixedly mounted at the middle of the upper end thereof, characterized in that: The left and right sides of the furnace body (1) are both provided with a feeding structure mounted on the slide table (2) and sliding horizontally via a first electric guide rail (5), the feeding structure comprising a heat preservation sleeve (3) mounted on a pair of first electric guide rails (5), a material rack (4) being mounted in the heat preservation sleeve (3) via a pair of second electric guide rails (6) distributed vertically; The material rack (4) comprises a pair of sealing disks (41), the pair of sealing disks (41) are connected via a fixed shaft, one of the sealing disks (41) is installed between a pair of first electric guide rails (5), and a plurality of material rods (42) are distributed in an annular manner on the pair of sealing disks (41); The left and right ends of the furnace body (1) are fixedly connected with sealing rings (7) which are sealed with the ends of the material rack (4), and the inner end wall of one of the sealing rings (7) is rotatably connected with an air supply structure which is arranged in communication with the sealing ring. The outside of the furnace body (1) is provided with an air storage tank (12) which is connected with the inside of the sealing ring (7) through an air inlet pipe (10), the air inlet pipe (10) is connected to the air outlet of the air storage tank (12), and the inside of the furnace body (1) is also connected with the air inlet of the air storage tank (12) through an air outlet pipe (11).

2. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 1, characterized in that: Each of the material rods (42) is provided with an annular groove with an opening at the upper end, and a material discharge groove (421) for embedding and installing the glass lens is provided at the bottom end of the annular groove.

3. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 2, characterized in that: A plurality of air holes are provided on the end wall of the material rod (42), and the left and right ends of the material rod (42) are rotatably mounted on the end walls of a pair of sealing disks (41).

4. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 1, characterized in that: A through groove (701) for embedding and connecting the end of the air supply structure is provided on the inner end wall of one of the sealing ring sleeves (7), and the inner end of the air inlet pipe (10) passes through the furnace body (1) and the sealing ring sleeve (7) and is connected to the through groove (701).

5. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 4, characterized in that: The air supply structure comprises a ventilation ring (8) rotatably sleeved on the through groove one (701), the inner end of the ventilation ring (8) is provided with a through groove two (801) connected to the through groove one (701), the outer end of the ventilation ring (8) is provided with a plurality of ventilation pipes (9) connected to the through groove two (801) distributed in an annular manner, and the plurality of ventilation pipes (9) are provided with a plurality of air nozzles (901) distributed horizontally toward the axial direction of the furnace body (1).

6. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 5, characterized in that: A driven gear (13) is fixedly sleeved on the outer end wall of the ventilation ring (8), a transmission gear (14) meshing with the driven gear (13) is rotatably mounted on the outer end wall of the furnace body (1), and a driving motor (15) for rotationally driving the transmission gear (14) is fixedly mounted on the outer end wall of the furnace body (1).

7. A method for using a vacuum atmosphere annealing device for producing optical glass lenses, using the vacuum atmosphere annealing device for producing optical glass lenses as described in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: loading process, placing the glass lens on the material discharging trough (421) of the material rack (4); Step 2: In the first round of heating treatment, after the material rack (4) is pushed into the furnace body (1), the furnace body (1) is evacuated to a certain vacuum degree and heated, and then the protective gas is evenly sprayed toward the material rack (4) through the air inlet pipe (10) and the air supply structure; Step 3: The first round of heat preservation and cooling treatment. After the heating treatment is completed, the material rack (4) is returned to the heat preservation sleeve (3), and the gas in the furnace body (1) flows into the heat preservation sleeve (3). The glass lens is kept warm and slowly cooled down under the action of the protective atmosphere; Step 4: a second round of annealing treatment. During the first round of heat preservation and cooling of the glass lenses, another group of racks (4) on which the glass lenses are placed are pushed into the furnace body (1). This cycle is repeated, and the glass lenses on the two groups of racks (4) are annealed alternately. Step 5: unloading processing. After the glass lens is slowly cooled in step 3, the insulation cover (3) together with the material rack (4) are pushed outward, and then the second electric guide rail (6) is used to push the material rack (4) out of the outer side of the end of the insulation cover (3) toward the side close to the furnace body (1), and the glass lens on the material rack (4) is unloaded.

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