Vacuum atmosphere annealing equipment for optical glass lens production

Abstract

The invention discloses vacuum atmosphere annealing equipment for optical glass lens production, and belongs to the technical field of glass product annealing, the vacuum atmosphere annealing equipment comprises a sliding table and a furnace body fixedly mounted in the middle of the upper end of the sliding table, and feeding structures mounted on the sliding table are arranged on the left side and the right side of the furnace body through first electric guide rails in a horizontal sliding mode; the left side and the right side of the furnace body are each provided with a feeding structure composed of a heat preservation sleeve and a material frame, during annealing work, one set of material frames containing glass lenses are pushed into the furnace body to be subjected to vacuum atmosphere heating treatment, after heating work is completed, the material frames are retreated into the heat preservation sleeves, and then the glass lenses are subjected to vacuum atmosphere heating treatment; in the process, gas in the furnace body flows into the heat preservation sleeve, follow-up heat preservation and cooling treatment are carried out under atmosphere protection, the quality of the annealed product is improved, when the furnace body is in an idle state, the other set of material frames are pushed into the furnace body, the two sets of material frames operate alternately, the space of the furnace body is not occupied by heat preservation and cooling treatment, and the annealing efficiency is effectively improved.

Description

Technical Field

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

[0002] From the perspective of the production process of optical glass, there are several key steps including melting, forming, annealing and inspection. Annealing is a very critical step, which means slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. Vacuum annealing is to evacuate the workpiece or fill it with protective gas around it during heating, so as to avoid oxidation of the workpiece during heating.

[0003] After searching, the patent number CN118272618A discloses "A titanium alloy vacuum stress relief annealing equipment 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 remains 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, and then the motor is controlled to reverse, so that the fan blades can rotate to blow air on the titanium alloy workpiece, accelerate the cooling of the titanium alloy workpiece, and thus improve the annealing efficiency.

[0004] Although this patent can achieve uniform heating and cooling of the workpiece, during the cooling process, the titanium alloy workpiece is pushed out of the shell and heat is dissipated by blowing air. Firstly, slow temperature-controlled cooling is not achieved, making it difficult to ensure the mechanical properties of the product. Secondly, without atmosphere protection, the product surface is prone to oxidation and decarburization, reducing product quality. In addition, during the annealing process of the workpiece, the device can only perform one round of annealing at a time. After the product is pulled out of the shell, it is necessary to wait until the cooling work is completed and the material is unloaded before the next round of annealing can be performed.

[0005] Therefore, we propose a vacuum atmosphere annealing equipment for the production of optical glass lenses to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, a vacuum atmosphere annealing equipment for the production of optical glass lenses is provided. By arranging a feeding structure composed of an insulation sleeve and a material rack on the left and right sides of a furnace body, when performing annealing, one group of material racks with glass lenses placed thereon is pushed into the furnace body for vacuum atmosphere heating treatment. After the heating work is completed, the material rack is returned to the insulation sleeve. During this process, the gas in the furnace body flows into the insulation sleeve, and subsequent insulation and cooling treatments are carried out under atmosphere protection, thereby improving the quality of the product after annealing. When the furnace body is in an idle state, another group of material racks is pushed into the furnace body, and the two groups of material racks operate alternately. The insulation and cooling treatments do not occupy the furnace body space, thereby effectively improving the annealing efficiency.

[0007] The object of the present invention can be achieved by the following technical scheme: A vacuum atmosphere annealing device for the production of optical glass lenses, comprising a slide and a furnace body fixedly installed in the middle of the upper end thereof, wherein electric heating pipes are installed on the inner walls of the furnace body, and both sides of the furnace body are provided with a feeding structure installed on the slide which can slide horizontally through a first electric guide rail, wherein the feeding structure comprises an insulation cover installed on a pair of first electric guide rails, and a material rack which can move horizontally is installed in the insulation cover through a pair of second electric guide rails distributed up and down;

[0008] The left and right ends of the furnace body are fixedly connected with sealing ring sleeves that are sealed with the ends of the material rack. The inner end wall of one of the sealing ring sleeves is rotatably connected with an air supply structure connected thereto. The outside of the furnace body is provided with a gas storage tank that 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 gas storage tank. The inside of the furnace body is also connected to the air inlet of the gas storage tank through an air outlet pipe.

[0009] Furthermore, the material rack includes a pair of sealing disks, which are connected by a fixed shaft, one of the sealing disks is installed between a pair of first electric guide rails, and a plurality of material rods are distributed in an annular manner on the pair of sealing disks.

[0010] Furthermore, each material rod is provided with an annular groove with an opening at the upper end, and a material discharge groove for embedding and installing the glass lens is provided at the bottom end of the annular groove.

[0011] Furthermore, a plurality of air holes are provided on the end wall of the material rod, and the left and right ends of the material rod are rotatably mounted on a pair of end walls of the sealing disk, and the plurality of material rods are distributed in a ring shape, and a plurality of material discharge troughs are provided on the material rod, and a plurality of glass lenses to be processed are placed one by one on the material discharge troughs, and the material rack is pushed into the furnace body for annealing. The plurality of groups of glass lenses are distributed in a ring shape and are heated evenly. After annealing and cooling, the material rods can be rotated downward to the side individually, and a flexible material receiving plate is placed below the side of the material rod. After the material rod is tilted to one side, the plurality of glass lenses can be poured downward as a whole for collection.

[0012] Furthermore, a through groove 1 for embedding and connecting the end of the air supply structure is opened on the inner end wall of one of the sealing ring sleeves, and the inner end of the air inlet pipe passes through the furnace body and the sealing ring sleeve and is connected to the through groove 1.

[0013] Furthermore, the air supply structure includes a ventilation ring rotatably sleeved on one of the through grooves, the inner end of the ventilation ring is provided with a through groove 2 connected to the through groove 1, the outer end of the ventilation ring is annularly distributed with multiple ventilation pipes connected to the through groove 2, and the multiple ventilation pipes are horizontally distributed with multiple air nozzles toward the axial direction of the furnace body.

[0014] Furthermore, a driven gear is fixedly sleeved on the outer end wall of the ventilation ring, a transmission gear meshing with the driven gear is rotatably mounted on the outer end wall of the furnace body, and a driving motor for rotationally driving the transmission gear is fixedly mounted on the outer end wall of the furnace body.

[0015] The present invention also provides a method for using a vacuum atmosphere annealing device for producing optical glass lenses, comprising the following steps:

[0016] Step 1: Loading process, placing the glass lens on the feeding trough of the material rack;

[0017] Step 2: In the first round of heating treatment, after the material rack is pushed into the furnace body, the furnace body is evacuated to a certain degree of vacuum and heated, and then the protective gas is filled into the gas supply structure through the air inlet pipe. During the gas supply process, the ventilation ring drives multiple groups of ventilation pipes to rotate, and the protective gas is evenly sprayed from the multiple groups of ventilation pipes toward the material rack;

[0018] Step 3: The first round of heat preservation and cooling treatment. After the heating treatment is completed, the material rack is returned to the insulation cover. During the process of the material rack returning, the gas in the furnace body flows into the insulation cover, and the glass lens is kept warm and slowly cooled down under the action of the protective atmosphere;

[0019] Step 4: The second round of annealing treatment: during the first round of glass lens heat preservation and cooling process, another set of racks with glass lenses are pushed into the furnace, and the cycle continues, and the glass lenses on the two sets of racks are annealed alternately;

[0020] Step 5: unloading. After the glass lens is slowly cooled down in step 3, push the insulation cover together with the material rack outward, and then use the second electric guide rail to push the material rack out of the outer side of the insulation cover end 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:

[0022] (1) This scheme is to set a feeding structure composed of an insulation sleeve and a material rack on both sides of the left and right sides of the furnace body. When annealing is carried out, one group of material racks with glass lenses placed on them is pushed into the furnace body for heating treatment. During the heating process, the glass lenses of another group of material racks are loaded. After the heating of the glass lenses is completed, the material racks are returned to the insulation sleeve until the outer sealing disk is returned to the sealing ring sleeve adjacent to the insulation sleeve. During the return process of the material racks, the gas in the furnace body flows into the insulation sleeve, so that subsequent insulation and cooling treatments are carried out under the protection of the atmosphere, thereby improving the quality of the product after annealing. When the furnace body is in an idle state, another group of material racks is pushed into the furnace body for heating treatment. The two groups of material racks operate alternately, and the insulation and cooling treatments do not occupy the furnace body space, thereby effectively improving the annealing efficiency.

[0023] (2) The air supply structure in this scheme includes a rotatably installed ventilation ring and a plurality of ventilation pipes distributed in a horizontal ring shape in the furnace body. During the heating process, by driving the ventilation ring to rotate, the ventilation ring drives the plurality of ventilation pipes to rotate synchronously, which is conducive to the protective gas in the ventilation pipes to be evenly sprayed from all sides to the material rack. The extended ventilation pipes have a stirring effect on the gas in the furnace body, improve the fluidity of the atmosphere, and ensure 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0028] Figure 5 It is a structural schematic diagram of another viewing angle of the junction of the heat preservation sleeve and the material rack of the present invention;

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

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

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

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

[0033] Fig.10 It is a structural schematic diagram of the joint between the sealing ring sleeve and the air supply structure of the present invention;

[0034] Fig.11 It is a structural schematic diagram of the sealing ring sleeve and the air supply structure of the present invention when they are detached;

[0035] Fig.12 It is a structural schematic diagram from another perspective when the sealing ring sleeve and the air supply structure of the present invention are detached;

[0036] Fig.13 A partial cross-sectional view of the present invention when heating the glass lenses on one group of material racks;

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

[0038] Fig.15 This is a schematic diagram of the external structure of the present invention after another group of material racks loaded with raw glass sheets are pushed into the furnace body.

[0039] Description of the numbers in the figure:

[0040] 1. Furnace body; 2. Slide; 3. Insulation sleeve; 4. Material rack; 41. Sealing plate; 42. Material rod; 421. Material discharge trough; 5. First electric guide rail; 6. Second electric guide rail; 7. Sealing ring sleeve; Through groove 1 701, Through groove 1; 8. Ventilation ring; Through groove 2 801, Through groove 2; 9. Ventilation pipe; 901, Air nozzle; 10. Inlet pipe; 11. Outlet pipe; 12. Gas storage tank; 13. Driven gear; 14. Transmission gear; 15. Driving motor. DETAILED DESCRIPTION

[0041] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0042] Example 1: The present invention discloses a vacuum atmosphere annealing device for producing optical glass lenses, see Figure 1-Figure 3 , including a slide 2 and a furnace body 1 fixedly installed at the middle of the upper end of the slide 2, electric heating tubes are installed on the inner walls around the furnace body 1, and the electric heating tubes are tubular structures coiled along the inner walls of the furnace body 1, which are conducive to achieving uniform temperature distribution in the furnace body 1, and the left and right sides of the furnace body 1 are provided with a feeding structure installed on the slide 2 through a first electric guide rail 5 for horizontal sliding;

[0043] The feeding structure includes an insulation 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 2, and a material rack 4 that can move horizontally is installed in the insulation sleeve 3 through a pair of second electric guide rails 6 distributed up and down, and the pair of second electric guide rails 6 are installed up and down on the upper and lower inner walls of the insulation sleeve 3.

[0044] See also Figure 4-Figure 7 The material rack 4 includes a pair of sealing disks 41, which are connected by a fixed shaft, one of which is installed between a pair of first electric guide rails 5, and a plurality of material rods 42 are distributed annularly on the pair of sealing disks 41, each of which is provided with an annular groove with an upper end opening, and a material discharge groove 421 for embedding and installing the glass lens is provided at the bottom of the annular groove;

[0045] A plurality of vent holes are provided on the end wall of the material rod 42. The left and right ends of the material rod 42 are rotatably mounted on the end walls of a pair of sealing disks 41. The plurality of material rods 42 are distributed in a ring shape, and a plurality of material discharge grooves 421 are provided on the material rod 42. The vent holes are provided on the material rod 42, which is conducive to achieving uniform heating of the glass lens on the material rod 42.

[0046] During the heating operation, the material rod 42 is in a stable state, the annular groove of the material rod 42 opens upward, and a plurality of glass lenses to be processed are placed one by one on the material placing groove 421. Figure 3 and Fig.13 , push the material rack 4 into the furnace body 1 for annealing, and multiple groups of glass lenses are distributed in a ring and heated evenly;

[0047] The left and right ends of the furnace body 1 are fixedly connected with sealing ring sleeves 7 that are sealed with the ends of the material rack 4. The sealing ring sleeves 7 match the sealing disk 41 at the outer end of the material rack 4. When the material rack 4 is pushed into the furnace body 1, the end of the insulation sleeve 3 abuts against the outside of the sealing ring sleeve 7 on the side adjacent to it, and the sealing disk 41 on the side away from the insulation sleeve 3 is sealed and engaged with the sealing ring sleeve 7 on the other side, so that the material rack 4 is sealed and placed in the furnace body 1 for heating treatment.

[0048] The inner end wall of one of the sealing ring sleeves 7 is rotatably connected to a gas supply structure connected thereto, and a gas storage tank 12 is provided on the outside of the furnace body 1 and is connected to the inside of the sealing ring sleeve 7 through an air inlet pipe 10. The air inlet pipe 10 is connected to the air outlet of the gas storage tank 12, and the inside of the furnace body 1 is also connected to the air inlet of the gas storage tank 12 through an air outlet pipe 11. When the material rack 4 is pushed into the furnace body 1, the furnace body 1 is evacuated to a certain vacuum degree, and is heated and insulated by electric heating tubes evenly distributed on the inner end wall of the furnace body 1, and 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 multiple groups of ventilation pipes 9 to rotate, and the protective gas is evenly sprayed toward the material rack 4 from the multiple groups of ventilation pipes 9.

[0049] See also Fig.14 After the heating treatment is completed, the material rack 4 is retracted into the insulation sleeve 3 through a pair of second electric guide rails 6 until the sealing disk 41 at the outer end is retracted to the sealing ring sleeve 7 on the adjacent side. During the retraction of the material rack 4, the air outlet pipe 11 is closed, and the gas in the furnace body 1 flows into the insulation sleeve 3. In this process, the protective gas inside the furnace body 1 can be drawn into the insulation sleeve 3 with the help of the existing suction gas structure, so that the glass lens is kept warm in the insulation sleeve 3 and slowly cooled down under the action of the protective atmosphere. The slow cooling in the protective atmosphere effectively prevents the surface oxidation of the glass lens and improves the quality of the product after annealing.

[0050] When the furnace body 1 is in an idle state, the first electric guide rail 5 is used to push the material rack 4 at the front end of another group of insulation sleeves 3 into the furnace body 1, and the end of the insulation sleeve 3 abuts against the outer end of the sealing ring sleeve 7 adjacent to it. The sealing disk 41 at the front end of the material rack 4 is embedded in the sealing ring sleeve 7 and abuts against the sealing disk 41 on another group of heat-treated material racks 4. The width of the sealing ring sleeve 7 is greater than the sum of the widths of a pair of sealing disks 41, so that the glass lenses on one group of material racks 4 are kept warm and cooled while the glass lenses on the other group of material racks 4 are in a heated state. In this cycle, the glass lenses on the two groups of material racks 4 are alternately annealed with each other, which maximizes the rational use of space and time and effectively improves the annealing efficiency.

[0051] After annealing and cooling, the insulation sleeve 3 and the material rack 4 are pushed outward by the first electric guide rail 5, and then the material rack 4 is pushed toward the side close to the furnace body 1 by the second electric guide rail 6, and the material rack 4 is pushed out of the end of the insulation sleeve 3 to facilitate the unloading operation;

[0052] During the material unloading process, it should be added that a rotating groove for the material rod 42 to be rotatably embedded is opened on the sealing disk 41, and the end of the material rod 42 is rotatably connected with the rotating groove with high friction, and 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 material unloading, a flexible material receiving plate is placed below the side of the material rod 42, and the material rod 42 is rotated toward the side and downward with force to unlock the fixed installation mode of the material rod 42. After the material rod 42 is tilted to one side, multiple glass lenses can be poured downward as a whole for collection.

[0053] Embodiment 2: A through groove 701 for embedding and connecting 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 passes through the furnace body 1 and the sealing ring sleeve 7 and is connected to the through groove 701, the air supply structure includes a ventilation ring 8 rotatably sleeved at the through groove 701, the inner end of the ventilation ring 8 is provided with a through groove 2 801 connected to the through groove 1 701, and a plurality of ventilation pipes 9 connected to the through groove 2 801 are distributed in an annular manner on the outer end of the ventilation ring 8, and a plurality of air nozzles 901 are horizontally distributed on the plurality of ventilation pipes 9 toward the axial direction of the furnace body 1, and the plurality of ventilation pipes 9 are installed on the inner side of the electric heating pipe and on the outer side of the material rod 42. When the material rod 42 is pushed into the furnace body 1, the operation of the electric heating pipe and the ventilation pipe 9 is not affected;

[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 5: unloading processing. After the glass lenses are slowly cooled down in step 4, the insulation sleeve 3 together with the material rack 4 are pushed outward by the first electric guide rail 5, and then the material rack 4 is pushed toward the side close to the furnace body 1 by the second electric guide rail 6. The material rack 4 is pushed out of the outer side of the end of the insulation sleeve 3 to facilitate unloading of the glass lenses on the material rack 4.

[0062] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within 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: Both left and right sides of the furnace body (1) are 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 left and right ends of the furnace body (1) are fixedly connected with sealing ring sleeves (7) which are sealed with the ends of the material rack (4); the inner end wall of one of the sealing ring sleeves (7) is rotatably connected with an air supply structure which is arranged in communication with the sealing ring sleeve; the outer side of the furnace body (1) is provided with an air storage tank (12) which is connected with the inside of the sealing ring sleeve (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 to 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: 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).

3. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 2, 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.

4. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 3, 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).

5. 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).

6. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 5, 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 shape, 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).

7. The vacuum atmosphere annealing equipment for producing optical glass lenses according to claim 6, 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).

8. 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 7, 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) with glass lenses placed thereon 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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