Optical glass rod hot forming process and hot forming device thereof

Abstract

The application relates to the technical field of glass rod production, and discloses an optical glass rod material hot forming process and a hot forming device thereof, which comprises the following steps: S1: pretreatment, collecting waste optical glass, and putting the collected optical glass into a smelting furnace with a temperature of 1600-1700 DEG C to smelt into glass liquid to obtain optical glass rod material; the application further discloses an optical glass rod material hot forming device, which comprises a supporting frame, and a plug hole is arranged at the top of the supporting frame. The application can not only save the production cost of the optical glass rod, is suitable for batch production, can avoid material waste, save resources, save energy and protect the environment, can improve the strength of the optical glass rod, improves the strength and high-temperature resistance of the optical glass rod, can avoid the problems that the end surface of the optical glass rod blank hot explosion cutting is irregular and is not perpendicular to the cylindrical surface, and improves the aesthetic property of the optical glass rod.

Description

Technical Field

[0001] This invention relates to the field of glass rod production technology, specifically to a thermoforming process and apparatus for optical glass rod materials. Background Technology

[0002] With the continuous changes in the optical terminal market, the applications of optical glass materials have become more diversified. The shape of optical glass has gradually transformed from a single strip form to multiple forms, with optical glass rods being one of them. Glass rods are highly favored by the market due to their extremely high material utilization rate.

[0003] In the production process of optical glass rods, the glass rods produced by one melting process need to be precision machined to ensure that the straightness, roundness, cylindrical surface and end face roughness of the glass rods meet the accuracy requirements. However, the current production cost of optical glass rods is high, and the strength and high temperature resistance are poor. Therefore, it is very necessary to propose a thermoforming process for optical glass rod materials and its thermoforming device. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a thermoforming process and apparatus for optical glass rods, primarily to solve the problems of high production costs and poor strength and high-temperature resistance of current optical glass rods.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: S1: Pre-treatment: Collect waste optical glass and melt it into glass liquid in a melting furnace at a temperature of 1600-1700℃ to obtain optical glass rods; S2: Making a glass rod involves placing the optical glass rod material from S1 into a glass rod material thermoforming device for cooling and forming to obtain an optical glass rod blank. S3: Grinding. The optical glass rod blank from S2 is clamped on the end face grinding machine to grind the two end faces of the optical glass rod blank. Then, the optical glass rod blank is clamped on the chamfering machine to chamfer the two end faces of the optical glass rod blank. Finally, the optical glass rod blank is clamped on the clamping fixture of the external cylindrical grinding machine to grind the outer circle of the optical glass rod blank. The support plate of the external cylindrical grinding machine drives the external cylindrical grinding wheel frame on it to feed along the radial direction of the glass rod blank to obtain the ground optical glass rod. S4: Fine grinding. The polished optical glass rod from S3 is clamped on a centerless grinder and the outer circle of the polished optical glass rod is finely ground. Then, the polished optical glass rod is clamped on a six-station fine grinding machine and the cylindrical surface of the polished optical glass rod is finely ground. Finally, the polished optical glass rod is clamped on a glass rod fixture and the end face of the polished optical glass rod is finely ground using a fine grinding ring polisher to obtain a finely ground optical glass rod. S5: Polishing. Clean the cylindrical surface of the finely ground optical glass rod in S4, clamp it on the glass fixture, and polish the cylindrical surface using a six-station polishing machine. Then clean the end face of the finely ground optical glass rod, place it on the worktable of the polishing ring polisher, and polish the end face to obtain the optical glass rod. S6: Glass rod treatment. The surface of the optical glass rod in S5 is coated with a layer of paraffin. Then, a mark is made at one end of the glass rod and the paraffin at the mark is removed. The optical glass rod is then immersed in the first etching solution for 40-50 minutes. After immersion, the paraffin layer is removed and the rod is washed. The optical glass rod is then immersed in the second etching solution for 20-35 minutes. After immersion, the rod is washed. Finally, the optical glass rod is placed in a tempering furnace for tempering. The tempered optical glass rod is then immersed in warm water and then cooled by immersion in cold water. S7: Inspection and Packaging. Use inspection equipment to inspect the optical glass rods. If the inspection is qualified, package the optical glass rods and put them into the packaging box. If the inspection is unqualified, the optical glass rods will be reworked. Based on the aforementioned scheme, the rotational speed of the external cylindrical grinding machine spindle in S3 is 150-250 r / min, and the feed rate of the external cylindrical grinding wheel head is 0.15-1 mm.

[0006] As a further embodiment of the present invention, the grinding wheel speed of the centerless grinder in S4 is 20-55 r / min, the grinding wheel linear speed is 5-9 m / s, and the feed rate is 0.04-0.2 mm.

[0007] Furthermore, the first corrosive liquid in S6 is a mixture of hydrofluoric acid and dilute hydrochloric acid in a volume ratio of 1:1 to 1:7, and the dilute hydrochloric acid is a mixture of concentrated hydrochloric acid and water in a volume ratio of 1:4.

[0008] Based on the aforementioned scheme, the second corrosive liquid in S6 is a mixture of hydrofluoric acid and dilute sulfuric acid in a volume ratio of 1:1 to 1:5, and the dilute sulfuric acid is a mixture of concentrated sulfuric acid and water in a volume ratio of 1:5.

[0009] This invention also discloses a thermoforming apparatus for optical glass rods, including a support frame. The top of the support frame has an insertion hole, and a mold is fixedly connected to the insertion hole. The mold has an integrally formed cavity. Two sliding grooves are formed inside the support frame and communicate with the insertion hole. A push rod is fixedly connected to each sliding groove. A spring is fixedly connected to one end of the push rod and is fixed to the support frame. Two grooves are formed on the outer side of the mold, and the push rod is fixedly connected to the grooves. A baffle is fixedly connected to one side of the support frame and contacts the mold. A second cylinder is fixedly connected to one side of the support frame and is fixed to the baffle. Two cooling water pipes are provided inside the support frame and pass through the support frame.

[0010] As a further embodiment of the present invention, two connecting shafts are fixedly connected inside the support frame, and a collection bucket is fixedly connected between the two connecting shafts. A buffer pad is adhered inside the collection bucket. One end of one of the connecting shafts passes through the support frame and is fixedly connected to a gear. A first cylinder is fixedly connected to one side of the support frame, and a rack is fixedly connected to one end of the pneumatic rod of the first cylinder, and the rack meshes with the gear.

[0011] Furthermore, the top of the insertion hole is provided with a slope, a fixing ear is fixedly connected to one side of the support frame, and an auxiliary inclined bucket is fixedly connected to the other side of the support frame.

[0012] (III) Beneficial Effects Compared with the prior art, the present invention provides a thermoforming process and apparatus for optical glass rods, which has the following advantages: 1. This invention can further reduce the production cost of optical glass rods by collecting and reprocessing waste optical glass, making it suitable for mass production. At the same time, it can also avoid material waste, save resources, and save energy and protect the environment.

[0013] 2. This invention enables the optical glass rod to be used in high-temperature environments by subjecting it to high-temperature treatment. The manufacturing method is simple and low-cost, and the resulting high-temperature resistant glass rod has good high-temperature resistance. At the same time, tempering the optical glass rod can improve its strength, save on the production cost of the optical glass rod, and improve the strength and high-temperature resistance of the optical glass rod.

[0014] 3. The processing method for optical glass rods in this invention is simple and quick to operate, requires low labor intensity from workers, and has low investment costs. It is suitable for processing various types of glass rods, especially for processing small-sized, small-diameter optical glass rods, which facilitates the production of optical glass rods.

[0015] 4. By grinding the end face of the optical glass rod blank to make it perpendicular to its cylindrical surface, the two end faces are symmetrical when beveling. This avoids the problem of uneven end faces and non-perpendicularity of the optical glass rod blank after hot cutting, thus improving the aesthetics of the optical glass rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of an optical glass rod thermoforming device proposed in this invention; Figure 2 This is a cross-sectional view of the support frame structure of an optical glass rod thermoforming device proposed in this invention; Figure 3 This is a partial cross-sectional view of the optical glass rod thermoforming device proposed in this invention. Figure 4 This is an enlarged structural diagram of part A of the optical glass rod thermoforming device proposed in this invention; Figure 5 This is a schematic diagram of the flow structure of a thermoforming process for optical glass rods proposed in this invention.

[0017] In the diagram: 1. Cooling water pipe; 2. Support frame; 3. Collection bucket; 4. Auxiliary inclined bucket; 5. Fixing lug; 6. First cylinder; 7. Rack; 8. Gear; 9. Mold; 10. Mold cavity; 11. Buffer pad; 12. Baffle; 13. Second cylinder; 14. Insertion hole; 15. Inclined surface; 16. Groove; 17. Push rod; 18. Spring; 19. Slide groove. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Reference Figures 1-5 A thermoforming process for optical glass rods includes the following steps: S1: Pre-treatment: Collect waste optical glass and melt it into glass liquid in a melting furnace at a temperature of 1700℃ to obtain optical glass rod material. This invention can further save the production cost of optical glass rod by collecting waste optical glass and processing it again, which is suitable for mass production. At the same time, it can also avoid material waste, save resources, and save energy and protect the environment. S2: Making a glass rod involves placing the optical glass rod material from S1 into a glass rod material thermoforming device for cooling and forming to obtain an optical glass rod blank. S3: Grinding. The optical glass rod blank from S2 is clamped on the end face grinding machine to grind the two end faces of the optical glass rod blank. Then, the optical glass rod blank is clamped on the chamfering machine to chamfer the two end faces of the optical glass rod blank. Finally, the optical glass rod blank is clamped on the clamping fixture of the external cylindrical grinding machine to grind the outer circle of the optical glass rod blank. The support plate of the external cylindrical grinding machine drives the external cylindrical grinding wheel frame on it to feed along the radial direction of the glass rod blank to obtain the ground optical glass rod. S4: Fine grinding. The polished optical glass rod from S3 is clamped on a centerless grinder to fine grind the outer circle of the polished optical glass rod. Then, the polished optical glass rod is clamped on a six-station fine grinding machine to fine grind the cylindrical surface of the polished optical glass rod. Finally, the polished optical glass rod is clamped on a glass rod fixture and the end face of the polished optical glass rod is finely ground using a fine grinding ring polisher to obtain a finely ground optical glass rod. This invention grinds the end face to make it perpendicular to its cylindrical surface, which facilitates the symmetrical shape of the two end faces when chamfering the end face. It can avoid the problem of uneven end faces and non-perpendicularity to the cylindrical surface when the optical glass rod blank is hot-cut, thus improving the aesthetics of the optical glass rod. S5: Polishing. Clean the cylindrical surface of the finely ground optical glass rod in S4, clamp it on the glass fixture, and polish the cylindrical surface using a six-station polishing machine. Then clean the end face of the finely ground optical glass rod, place it on the worktable of the polishing ring polisher, and polish the end face to obtain the optical glass rod. S6: Glass rod treatment. The surface of the optical glass rod in S5 is coated with a paraffin layer. Then, a mark is engraved on one end of the glass rod and the paraffin at the mark is removed. The optical glass rod is then immersed in the first etching solution for 50 minutes. After immersion, the paraffin layer is removed and the rod is washed. The optical glass rod is then immersed in the second etching solution for 35 minutes. After immersion, the rod is removed and washed. Finally, the optical glass rod is placed in a tempering furnace for tempering treatment. The tempered optical glass rod is then immersed in warm water and then cooled by immersion in cold water. This invention enables the optical glass rod to be used in high-temperature environments by performing high-temperature resistant treatment. The manufacturing method is simple and low-cost, and the resulting high-temperature resistant glass rod has good high-temperature resistance. At the same time, the tempering treatment of the optical glass rod can improve its strength, save on the production cost of the optical glass rod, and improve the strength and high-temperature resistance of the optical glass rod. S7: Inspection and Packaging. The optical glass rod is inspected using inspection equipment. After passing the inspection, the optical glass rod is packaged and placed in a packaging box. The optical glass rods that fail the inspection are reworked. The optical glass rod processing method in this invention is simple and quick to operate, requires low labor intensity from workers, and has low investment costs. It is suitable for processing various types of glass rods, especially for processing small-sized and small-diameter optical glass rods, which facilitates the production of optical glass rods.

[0020] In this invention, the spindle speed of the external cylindrical grinding machine in S3 is 250 r / min, and the feed rate of the external cylindrical grinding wheel head is 1 mm. In S4, the grinding wheel speed of the centerless grinding machine is 55 r / min, the grinding wheel linear velocity is 9 m / s, and the feed rate is 0.2 mm. In S6, the first etching solution is a mixture of hydrofluoric acid and dilute hydrochloric acid in a volume ratio of 1:7, and the dilute hydrochloric acid is a mixture of concentrated hydrochloric acid and water in a volume ratio of 1:4. In S6, the second etching solution is a mixture of hydrofluoric acid and dilute sulfuric acid in a volume ratio of 1:5, and the dilute sulfuric acid is a mixture of concentrated sulfuric acid and water in a volume ratio of 1:5.

[0021] This invention also discloses a thermoforming apparatus for optical glass rods, including a support frame 2. The top of the support frame 2 has an insertion hole 14, into which a mold 9 is inserted. The mold 9 is integrally formed with a mold cavity 10. Two sliding grooves 19 are formed inside the support frame 2, and the sliding grooves 19 communicate with the insertion hole 14. A push rod 17 is slidably connected within the sliding grooves 19. A spring 18 is welded to one end of the push rod 17 and is fixed to the support frame 2. Two grooves 16 are formed on the outer side of the mold 9, and the push rod 17 engages with the grooves 16. A baffle 12 is inserted into one side of the support frame 2, and the baffle 12 contacts the mold 9. A third... Two cylinders 13 are fixed to the baffle 12. Two cooling water pipes 1 are provided in the support frame 2 and pass through the support frame 2. The mold 9 is inserted into the insertion hole 14. During the process of mold 9 entering, it will contact the ejector rod 17 and push the ejector rod 17 to move. The ejector rod 17 will squeeze the spring 18. When the mold 9 contacts the baffle 12, the ejector rod 17 will be reset by the force of the spring 18, thereby engaging with the groove 16 and fixing the position of the mold 9. The molten glass is poured into the mold cavity 10 of the mold 9. Cooling liquid is introduced into the cooling water pipe 1. The cooling liquid will absorb the heat of the molten glass and cool the molten glass to form a glass rod.

[0022] In this invention, it is particularly important to note that two connecting shafts are rotatably connected within the support frame 2. A collection bucket 3 is fixed between the two connecting shafts by bolts. A buffer pad 11 is adhered inside the collection bucket 3. One end of one of the connecting shafts passes through the support frame 2 and is keyed to a gear 8. A first cylinder 6 is fixed to one side of the support frame 2 by bolts. One end of the pneumatic rod of the first cylinder 6 is fixed to a rack 7 by bolts, and the rack 7 meshes with the gear 8. The top of the insertion hole 14 is provided with a slope 15. A fixing lug 5 is fixed to one side of the support frame 2 by bolts, and the other side of the support frame 2 is fixed by bolts. An auxiliary inclined bucket 4 is fixed in place. When the first cylinder 6 is activated, the first cylinder 6 contracts, causing the rack 7 to move. The rack 7 drives the gear 8 to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft then drives the collection bucket 3 to rotate. When the collection bucket 3 rotates to be level with the auxiliary inclined bucket 4, the first cylinder 6 is deactivated. Because the auxiliary inclined bucket 4 is inclined, the collection bucket 3 will also tilt when it rotates to be level with the auxiliary inclined bucket 4. At this time, the glass rods inside the collection bucket 3 will slide out along the inclined groove of the auxiliary inclined bucket 4 under the action of gravity, and the staff can then collect the glass rods.

[0023] Working principle: When glass rod material needs to be formed, mold 9 is inserted into insertion hole 14. During the insertion process, mold 9 will contact ejector rod 17 and push ejector rod 17 to move. Ejector rod 17 will compress spring 18. When mold 9 contacts baffle 12, ejector rod 17 will be reset by the force of spring 18, thus engaging with groove 16 and fixing the position of mold 9. Molten glass is poured into mold cavity 10 of mold 9. Coolant is introduced into cooling water pipe 1. Coolant absorbs the heat of molten glass, causing molten glass to cool and form into glass rod. After the glass rod is formed, second cylinder 13 is activated. Second cylinder 13 extends and pushes baffle 12 to move. When baffle 12 no longer blocks mold 9, second cylinder 13 is closed. The glass rod will fall into the collection bucket 3 under the action of gravity. The buffer pad 11 inside the collection bucket 3 will cushion the glass rod, reduce the force of the glass rod falling, and protect the glass rod. Then, the first cylinder 6 is activated. The first cylinder 6 retracts and drives the rack 7 to move. The rack 7 drives the gear 8 to rotate. The gear 8 drives the rotating shaft to rotate. The rotating shaft drives the collection bucket 3 to rotate. When the collection bucket 3 rotates to be level with the auxiliary inclined bucket 4, the first cylinder 6 is closed. Since the auxiliary inclined bucket 4 is inclined, the collection bucket 3 will also tilt when it rotates to be level with the auxiliary inclined bucket 4. At this time, the glass rod in the collection bucket 3 will slide out along the inclined groove of the auxiliary inclined bucket 4 under the action of gravity. The staff can then collect the glass rod.

[0024] Example 2 Reference Figures 1-5 A thermoforming process for optical glass rods, the preparation method of which includes the following steps: S1: Pre-treatment: Collect waste optical glass and melt it into glass liquid in a melting furnace at a temperature of 1600℃ to obtain optical glass rod material. This invention can further save the production cost of optical glass rod by collecting waste optical glass and processing it again, which is suitable for mass production. At the same time, it can also avoid material waste, save resources, and save energy and protect the environment. S2: Making a glass rod involves placing the optical glass rod material from S1 into a glass rod material thermoforming device for cooling and forming to obtain an optical glass rod blank. S3: Grinding. The optical glass rod blank from S2 is clamped on the end face grinding machine to grind the two end faces of the optical glass rod blank. Then, the optical glass rod blank is clamped on the chamfering machine to chamfer the two end faces of the optical glass rod blank. Finally, the optical glass rod blank is clamped on the clamping fixture of the external cylindrical grinding machine to grind the outer circle of the optical glass rod blank. The support plate of the external cylindrical grinding machine drives the external cylindrical grinding wheel frame on it to feed along the radial direction of the glass rod blank to obtain the ground optical glass rod. S4: Fine grinding. The polished optical glass rod from S3 is clamped on a centerless grinder to fine grind the outer circle of the polished optical glass rod. Then, the polished optical glass rod is clamped on a six-station fine grinding machine to fine grind the cylindrical surface of the polished optical glass rod. Finally, the polished optical glass rod is clamped on a glass rod fixture and the end face of the polished optical glass rod is finely ground using a fine grinding ring polisher to obtain a finely ground optical glass rod. This invention grinds the end face to make it perpendicular to its cylindrical surface, which facilitates the symmetrical shape of the two end faces when chamfering the end face. It can avoid the problem of uneven end faces and non-perpendicularity to the cylindrical surface when the optical glass rod blank is hot-cut, thus improving the aesthetics of the optical glass rod. S5: Polishing. Clean the cylindrical surface of the finely ground optical glass rod in S4, clamp it on the glass fixture, and polish the cylindrical surface using a six-station polishing machine. Then clean the end face of the finely ground optical glass rod, place it on the worktable of the polishing ring polisher, and polish the end face to obtain the optical glass rod. S6: Glass rod treatment. The surface of the optical glass rod in S5 is coated with a paraffin layer. Then, a mark is engraved on one end of the glass rod and the paraffin at the mark is removed. The optical glass rod is then immersed in the first etching solution for 40 minutes. After immersion, the paraffin layer is removed and the rod is washed. The optical glass rod is then immersed in the second etching solution for 20 minutes. After immersion, the rod is removed and washed. Finally, the optical glass rod is placed in a tempering furnace for tempering. The tempered optical glass rod is then immersed in warm water and then cooled by immersion in cold water. This invention enables the optical glass rod to be used in high-temperature environments by performing high-temperature resistant treatment. The manufacturing method is simple and low-cost, and the resulting high-temperature resistant glass rod has good high-temperature resistance. At the same time, the tempering treatment of the optical glass rod can improve its strength, save on the production cost of the optical glass rod, and improve the strength and high-temperature resistance of the optical glass rod. S7: Inspection and Packaging. The optical glass rod is inspected using inspection equipment. After passing the inspection, the optical glass rod is packaged and placed in a packaging box. The optical glass rods that fail the inspection are reworked. The optical glass rod processing method in this invention is simple and quick to operate, requires low labor intensity from workers, and has low investment costs. It is suitable for processing various types of glass rods, especially for processing small-sized and small-diameter optical glass rods, which facilitates the production of optical glass rods.

[0025] In this invention, the spindle speed of the external cylindrical grinding machine in S3 is 150 r / min, and the feed rate of the external cylindrical grinding wheel head is 0.15 mm. In S4, the grinding wheel speed of the centerless grinding machine is 20 r / min, the grinding wheel linear velocity is 5 m / s, and the feed rate is 0.04 mm. In S6, the first etching solution is a mixture of hydrofluoric acid and dilute hydrochloric acid in a 1:1 volume ratio, and the dilute hydrochloric acid is a mixture of concentrated hydrochloric acid and water in a 1:4 volume ratio. In S6, the second etching solution is a mixture of hydrofluoric acid and dilute sulfuric acid in a 1:1 volume ratio, and the dilute sulfuric acid is a mixture of concentrated sulfuric acid and water in a 1:5 volume ratio.

[0026] This invention also discloses a thermoforming apparatus for optical glass rods, including a support frame 2. The top of the support frame 2 has an insertion hole 14, into which a mold 9 is inserted. The mold 9 is integrally formed with a mold cavity 10. Two sliding grooves 19 are formed inside the support frame 2, and the sliding grooves 19 communicate with the insertion hole 14. A push rod 17 is slidably connected within the sliding grooves 19. A spring 18 is welded to one end of the push rod 17 and is fixed to the support frame 2. Two grooves 16 are formed on the outer side of the mold 9, and the push rod 17 engages with the grooves 16. A baffle 12 is inserted into one side of the support frame 2, and the baffle 12 contacts the mold 9. A third... Two cylinders 13 are fixed to the baffle 12. Two cooling water pipes 1 are provided in the support frame 2 and pass through the support frame 2. The mold 9 is inserted into the insertion hole 14. During the process of mold 9 entering, it will contact the ejector rod 17 and push the ejector rod 17 to move. The ejector rod 17 will squeeze the spring 18. When the mold 9 contacts the baffle 12, the ejector rod 17 will be reset by the force of the spring 18, thereby engaging with the groove 16 and fixing the position of the mold 9. The molten glass is poured into the mold cavity 10 of the mold 9. Cooling liquid is introduced into the cooling water pipe 1. The cooling liquid will absorb the heat of the molten glass and cool the molten glass to form a glass rod.

[0027] In this invention, it is particularly important to note that two connecting shafts are rotatably connected within the support frame 2. A collection bucket 3 is fixed between the two connecting shafts by bolts. A buffer pad 11 is adhered inside the collection bucket 3. One end of one of the connecting shafts passes through the support frame 2 and is keyed to a gear 8. A first cylinder 6 is fixed to one side of the support frame 2 by bolts. One end of the pneumatic rod of the first cylinder 6 is fixed to a rack 7 by bolts, and the rack 7 meshes with the gear 8. The top of the insertion hole 14 is provided with a slope 15. A fixing lug 5 is fixed to one side of the support frame 2 by bolts, and the other side of the support frame 2 is fixed by bolts. An auxiliary inclined bucket 4 is fixed in place. When the first cylinder 6 is activated, the first cylinder 6 contracts, causing the rack 7 to move. The rack 7 drives the gear 8 to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft then drives the collection bucket 3 to rotate. When the collection bucket 3 rotates to be level with the auxiliary inclined bucket 4, the first cylinder 6 is deactivated. Because the auxiliary inclined bucket 4 is inclined, the collection bucket 3 will also tilt when it rotates to be level with the auxiliary inclined bucket 4. At this time, the glass rods inside the collection bucket 3 will slide out along the inclined groove of the auxiliary inclined bucket 4 under the action of gravity, and the staff can then collect the glass rods.

[0028] Working principle: When glass rod material needs to be formed, mold 9 is inserted into insertion hole 14. During the insertion process, mold 9 will contact ejector rod 17 and push ejector rod 17 to move. Ejector rod 17 will compress spring 18. When mold 9 contacts baffle 12, ejector rod 17 will be reset by the force of spring 18, thus engaging with groove 16 and fixing the position of mold 9. Molten glass is poured into mold cavity 10 of mold 9. Coolant is introduced into cooling water pipe 1. Coolant absorbs the heat of molten glass, causing molten glass to cool and form into glass rod. After the glass rod is formed, second cylinder 13 is activated. Second cylinder 13 extends and pushes baffle 12 to move. When baffle 12 no longer blocks mold 9, second cylinder 13 is closed. The glass rod will fall into the collection bucket 3 under the action of gravity. The buffer pad 11 inside the collection bucket 3 will cushion the glass rod, reduce the force of the glass rod falling, and protect the glass rod. Then, the first cylinder 6 is activated. The first cylinder 6 retracts and drives the rack 7 to move. The rack 7 drives the gear 8 to rotate. The gear 8 drives the rotating shaft to rotate. The rotating shaft drives the collection bucket 3 to rotate. When the collection bucket 3 rotates to be level with the auxiliary inclined bucket 4, the first cylinder 6 is closed. Since the auxiliary inclined bucket 4 is inclined, the collection bucket 3 will also tilt when it rotates to be level with the auxiliary inclined bucket 4. At this time, the glass rod in the collection bucket 3 will slide out along the inclined groove of the auxiliary inclined bucket 4 under the action of gravity. The staff can then collect the glass rod.

[0029] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements.

Claims

1. A thermoforming apparatus for optical glass rods, comprising a support frame (2), characterized in that, The top of the support frame (2) is provided with an insertion hole (14), and a mold (9) is fixedly connected in the insertion hole (14). The mold (9) is integrally formed with a mold cavity (10). The support frame (2) is provided with two sliding grooves (19), and the sliding grooves (19) are connected to the insertion hole (14). A push rod (17) is fixedly connected in the sliding grooves (19). A spring (18) is fixedly connected to one end of the push rod (17), and the spring (18) is fixed to the support frame (2). Two grooves (16) are provided on the outside of the mold (9), and the push rod (17) is fixedly connected to the grooves (16). A baffle (12) is fixedly connected to one side of the support frame (2), and the baffle (12) is in contact with the mold (9). A second cylinder (13) is fixedly connected to one side of the support frame (2). The second cylinder (13) is fixed to the baffle (12). The support frame (2) is provided with two cooling water pipes (1), and the cooling water pipes (1) pass through the support frame (2). The support frame (2) is fixedly connected with two connecting shafts, and a collection bucket (3) is fixedly connected between the two connecting shafts. When the baffle (12) no longer blocks the mold (9), the second cylinder (13) is closed. At this time, the glass rod will fall into the collection bucket (3) under the action of gravity. A buffer pad (11) is glued inside the collection bucket (3). One end of one of the connecting shafts passes through the support frame (2) and is fixedly connected to a gear (8). The support frame (2) is fixedly connected to one side of the first cylinder (6). One end of the pneumatic rod of the first cylinder (6) is fixedly connected to a rack (7), and the rack (7) meshes with the gear (8).

2. The optical glass rod thermoforming apparatus according to claim 1, characterized in that, The top of the insertion hole (14) is provided with a slope (15), a fixed ear (5) is fixedly connected to one side of the support frame (2), and an auxiliary inclined bucket (4) is fixedly connected to the other side of the support frame (2).

3. A thermoforming process for optical glass rods, characterized in that, Includes the following steps: S1: Pre-treatment: Collect waste optical glass and melt it into glass liquid in a melting furnace at a temperature of 1600-1700℃ to obtain optical glass rods; S2: To make a glass rod, the optical glass rod material in S1 is placed into the optical glass rod material thermoforming device as described in claim 1 for cooling and forming to obtain an optical glass rod blank. S3: Grinding. The optical glass rod blank from S2 is clamped on the end face grinding machine to grind the two end faces of the optical glass rod blank. Then, the optical glass rod blank is clamped on the chamfering machine to chamfer the two end faces of the optical glass rod blank. Finally, the optical glass rod blank is clamped on the clamping fixture of the cylindrical grinding machine to grind the outer circle of the optical glass rod blank. The support plate of the cylindrical grinding machine drives the outer cylindrical grinding wheel holder on it to feed along the radial direction of the glass rod blank to obtain the polished optical glass rod. The spindle speed of the cylindrical grinding machine is 150-250 r / min, and the feed amount of the outer cylindrical grinding wheel holder is 0.15-1 mm. S4: Fine grinding. The optical glass rod from S3 is clamped on a centerless grinder and the outer circle of the optical glass rod is finely ground. Then, the optical glass rod is clamped on a six-station fine grinding machine and the cylindrical surface of the optical glass rod is finely ground. Finally, the optical glass rod is clamped on a glass rod fixture and the end face of the optical glass rod is finely ground using a fine grinding ring polisher to obtain a finely ground optical glass rod. The grinding wheel speed of the centerless grinder is 20-55 r / min, the grinding wheel linear speed is 5-9 m / s, and the feed rate is 0.04-0.2 mm. S5: Polishing. Clean the cylindrical surface of the finely ground optical glass rod in S4, clamp it on the glass fixture, and polish the cylindrical surface using a six-station polishing machine. Then clean the end face of the finely ground optical glass rod, place it on the worktable of the polishing ring polisher, and polish the end face to obtain the optical glass rod. S6: Glass rod treatment. The surface of the optical glass rod in S5 is coated with a layer of paraffin. Then, a mark is made at one end of the glass rod and the paraffin at the mark is removed. The optical glass rod is then immersed in the first etching solution for 40-50 minutes. After immersion, the paraffin layer is removed and the rod is washed. The optical glass rod is then immersed in the second etching solution for 20-35 minutes. After immersion, the rod is washed. Finally, the optical glass rod is placed in a tempering furnace for tempering. The tempered optical glass rod is then immersed in warm water and then cooled by immersion in cold water. S7: Inspection and Packaging. Use inspection equipment to inspect the optical glass rods. If the inspection is qualified, package the optical glass rods and put them into the packaging box. If the inspection is unqualified, the optical glass rods will be returned for repair.

Images