Bending device for glass production

Abstract

The invention belongs to the field of tempered glass production equipment, and discloses a bending device for glass production, which comprises a base and a back box arranged at the rear part of the top of the base, the back box is internally hollow, a lifting assembly is arranged at the upper part in the back box, a transmission assembly is arranged at the lower part in the back box, and the lifting assembly is provided with an upper air box; a lower bellows is embedded in the top of the base; an upper blast pipe and a lower blast pipe are respectively arranged on the side surfaces of the upper bellows and the lower bellows. The height of the upper air box and the position of the mold frame can be flexibly and accurately adjusted through the lifting and transmission assembly, and the operation process is simplified; the limiting plate frame and the roll shaft frame stably position the glass. A blowing system is optimized, a sealing ring prevents leakage, a universal rotating pipe and a blowing head accurately control force, and the glass damage rate is reduced. The safety chain guarantees operation safety. The device is suitable for glass manufacturing enterprises, processing factories and scientific research institutions and can be used for hot bending forming processing of glass in the fields of buildings, automobiles, household appliances and the like, the operation difficulty is reduced, and the efficiency and quality are improved.

Description

Technical Field

[0001] The present invention belongs to the field of tempered glass production equipment and relates to a bending device, in particular to a bending device for glass production. Background Art

[0002] Glass is an amorphous, inorganic, non-metallic material, typically made from a variety of inorganic minerals, with small amounts of auxiliary materials added. Its primary components are silicon dioxide and other oxides. It can be categorized into quartz glass, high-pressure-resistant glass, UV-resistant glass, and explosion-proof glass. It is widely used in architecture, daily necessities, art, medicine, chemistry, electronics, and instrumentation.

[0003] The Chinese utility model patent with application number 202321342283.9 relates to a glass processing hot pressing and bending device, including a processing box, the output end of the power supply mechanism is fixedly connected to the hot pressing plate, the side of the processing box is provided with a cooling mechanism, the bottom of the processing box is provided with a plurality of leakage holes, the bottom of the processing box is fixedly connected with a guide pipe, the side of the guide pipe is provided with guide holes, the bottom of the guide pipe is fixedly connected with a water storage tank, and the cooling mechanism provided on the side of the processing box can be used to spray the cooling water in the water storage tank onto the glass by relying on the cooling mechanism, so that the glass can be cooled. Although this utility model patent relies on the leakage holes opened at the bottom of the processing box, the guide pipe fixedly connected to the bottom of the processing box, and the guide holes opened on the side of the guide pipe, the cooling water after spraying flows to the interior of the processing box, and flows to the interior of the water storage tank by relying on the leakage holes and the guide holes, the cooling water can be reused, which can save water resources.

[0004] However, this patent has the disadvantages of complex structure, difficult operation, low processing efficiency due to long hot pressing and cooling time and limited number of glass processed at a single time, uncontrollable temperature and pressure uniformity, easy damage to the glass, making it difficult to ensure processing quality, high maintenance cost and high energy consumption. Summary of the Invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention aims to provide a bending device for glass production, so as to reduce the difficulty of equipment operation, improve glass processing efficiency, and at the same time control the force of bending glass, reduce the glass damage rate, and improve the quality of produced glass.

[0006] To achieve the above object, the technical solutions adopted by the present invention are as follows: A bending device for glass production includes a base and a back box arranged at the rear of the top of the base. The back box is hollow, and a lifting assembly is arranged at the upper part of the back box, and a transmission assembly is arranged at the lower part. The lifting assembly is provided with an upper bellows; a lower bellows is embedded in the top of the base; and an upper blower pipe and a lower blower pipe are respectively arranged on the sides of the upper bellows and the lower bellows.

[0007] As a limitation of the present invention, the lifting assembly includes multiple groups of lifting gears arranged inside the back box, each lifting gear is mounted on a power shaft, one end of the power shaft is fixedly connected to the power output end of the rotating motor; the lifting assembly includes multiple groups of lifting rods fixedly arranged on the side of the upper air box facing the back box.

[0008] As a further limitation of the present invention, each lifting gear is correspondingly provided to each lifting rod, and the lifting gear and the lifting rod are meshed.

[0009] As another limitation of the present invention, a transmission assembly is provided at the lower part of the back box, and the transmission assembly includes a spiral rotating rod passing through the lower part of the back box, a rotating handle is provided at one end of the spiral rotating rod, and a plurality of transmission connecting rings are sleeved on the end away from the rotating handle, each transmission connecting ring is provided with an internal thread matching the external thread of the spiral rotating rod, and a mold frame is fixedly provided on the outside of each transmission connecting ring.

[0010] As the third limitation of the present invention, a limiting plate frame and a roller frame are respectively provided at both ends of the top of the base along the width direction, the limiting plate frame is fixed with a limiting plate perpendicular to the length direction of the back box, the limiting plate frame and the roller frame are clamped with a limiting plate parallel to the length direction of the back box, and each limiting plate is provided with a groove.

[0011] As a further limitation of the present invention, the side of the mold frame away from the transmission connecting ring is clamped in the groove of the limit plate parallel to the length direction of the back box, and the side of the mold frame away from the transmission connecting ring can slide back and forth in the groove of the limit plate parallel to the length direction of the back box.

[0012] As a further limitation of the present invention, a roller shaft parallel to the width direction of the bottom box is movably provided on the roller shaft frame, and the roller shaft is arranged below the mold frame.

[0013] As another limitation of the present invention, a plurality of air vents are evenly provided at the bottom of the upper bellows and the top of the lower bellows, an upper blowing pipe is movably inserted into the air vents opened at the bottom of the upper bellows, and an upper sealing ring is provided at the contact position between the upper blowing pipe and the air vents opened at the bottom of the upper bellows; a lower blowing pipe is movably inserted into the air vents opened at the bottom of the lower bellows, and a lower sealing ring is provided at the contact position between the lower blowing pipe and the air vents opened at the bottom of the lower bellows.

[0014] As a fourth limitation of the present invention, safety chains are provided on the four corners of the top of the upper bellows, and one end of the safety chain away from the top of the upper bellows is fixed to the ceiling.

[0015] As another limitation of the present invention, the upper blowing pipe and the lower blowing pipe are each provided with a universal swivel pipe at one end away from the respective bellows, and a blowing head is provided at one end of the universal swivel pipe away from the blowing pipe.

[0016] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art: (1) The present invention relates to a bending device for glass production. A rotating motor in a lifting assembly drives a power shaft, causing a lifting gear mounted thereon to rotate, which in turn engages with a lifting rod, thereby raising and lowering an upper bellows. This design allows the height of the upper bellows to be flexibly adjusted, allowing for adaptive adjustment to glass of varying thicknesses and bending requirements, thereby improving the device's applicability to a variety of glass production situations.

[0017] (2) The present invention relates to a bending device for glass production. A rotating handle is provided at one end of a spiral rod in a transmission assembly. The rotating handle can rotate the spiral rod. A transmission connecting ring mounted on the spiral rod can move along the spiral rod due to the cooperation between the internal thread and the external thread of the spiral rod, thereby driving the mold frame fixed to the outside of the spiral rod to move. The mold frame can slide back and forth within the groove of the limit plate, facilitating the precise adjustment of the mold frame position to meet the mold position requirements in different glass bending processes.

[0018] (3) The present invention relates to a bending device for glass production. The device comprises a limit plate frame and a roller frame provided at both ends of the top of the base. The limit plates on the limit plate frame cooperate with the roller frame to stably position and support the glass. During the glass bending process, the limit plates and rollers prevent the glass from deflecting, thereby ensuring the accuracy and quality of the glass bending.

[0019] (4) The present invention relates to a bending device for glass production. By arranging an upper sealing ring between an upper blowing pipe at the bottom of an upper bellows and an air outlet, and arranging a lower sealing ring between a lower blowing pipe at the bottom of a lower bellows and an air outlet, the leakage of gas during the blowing process is effectively prevented, the blowing effect of the upper and lower bellows on the glass is ensured, and the efficiency and quality of glass bending are improved.

[0020] (5) The present invention relates to a bending device for glass production. By arranging a universal swivel tube and a blowing head at one end of the upper blowing pipe and the lower blowing pipe away from the bellows, the angle of the blowing head can be flexibly adjusted according to the specific requirements of the glass bending, so that the hot air can act more accurately on the part of the glass that needs to be bent, thereby further improving the process effect of the glass bending and the flexibility of operation.

[0021] (6) The present invention relates to a bending device for glass production, in which safety chains are arranged at the four corners of the top of the upper bellows and fixed to the ceiling. Even if an abnormal situation occurs during the operation of the equipment and the upper bellows becomes loose, the safety chains can still play a protective role and prevent the upper bellows from falling, thereby ensuring the safety of the operator and the stable operation of the equipment.

[0022] In summary, the present invention relates to a bending device for glass production, which effectively reduces the difficulty of equipment operation and significantly improves the efficiency of glass processing. The setting of the lifting assembly and the transmission assembly enables the height of the upper bellows and the position of the mold frame to be flexibly and accurately adjusted. The operator can conveniently adjust the equipment parameters according to the bending requirements of different glasses, which greatly simplifies the operation process; the limit plate frame and the roller frame on the top of the base cooperate to play a stable positioning role for the glass, reduce the deviation of the glass during the processing, and lay the foundation for efficient processing. At the same time, through the optimization of the blowing system, the upper and lower sealing rings effectively prevent gas leakage, the universal swivel tube and the blowing head can flexibly adjust the angle, and can accurately control the blowing force on the glass, thereby achieving accurate control of the force of bending the glass and reducing the damage rate of the glass during the bending process. In addition, the safety chain design of the upper bellows ensures the safe operation of the equipment and avoids accidents caused by equipment failure. The synergistic effect of multiple designs not only reduces the difficulty of equipment operation and improves the efficiency of glass processing, but also reduces the glass damage rate by accurately controlling the bending force, and ultimately improves the quality of the produced glass.

[0023] The present invention is applicable to various glass manufacturing enterprises, glass deep processing factories and relevant scientific research institutions, and is used for the hot bending forming of different types of glass, such as architectural decorative glass (such as curtain wall glass, door and window glass), automotive glass (windshield, car window glass), and household appliance glass (refrigerator panel, oven glass). BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic structural diagram of Example 1 of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the back box of Example 1 of the present invention; Figure 3 This is a schematic diagram of the upper and lower blowing pipe structures of Example 1 of the present invention; Figure 4 This is a schematic structural diagram of part A in Example 1 of the present invention; Figure 5 This is a structural diagram of Example 2 of the present invention.

[0026] In the figure: 1. Back box; 2. Transmission connecting ring; 3. Mold frame; 4. Roller; 5. Roller frame; 6. Lower bellows; 7. Limit plate frame; 8. Lower blast pipe; 9. Base; 10. Turning handle; 11. Upper blast pipe; 12. Upper bellows; 13. Screw rod; 14. Lifting rod; 15. Lifting gear; 16. Lower blast pipe; 17. Lower sealing ring; 18. Upper sealing ring; 19. Upper blast pipe; 20. Universal swivel pipe; 21. Blowing head; 22. Telescopic arm. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention and are not intended to limit the present invention.

[0028] Example 1 A bending device for glass production like Figures 1 to 4 As shown, this embodiment relates to a bending device for glass production, which includes a base 9 and a back box 1 arranged at the top rear of the base 9. The back box 1 is hollow, and a lifting assembly is provided at the upper part of the back box 1, and a transmission assembly is provided at the lower part. The lifting assembly is provided with an upper bellows 12; a lower bellows 6 is embedded in the top of the base 9; an upper blower pipe 11 and a lower blower pipe 8 are respectively provided on the sides of the upper bellows 12 and the lower bellows 6.

[0029] The lifting assembly includes multiple groups of lifting gears 15 arranged inside the back box 1, each lifting gear 15 is mounted on a power shaft, one end of the power shaft is fixedly connected to the power output end of the rotating motor; the lifting assembly includes multiple groups of lifting rods 14 fixedly arranged on the side of the upper air box 12 facing the back box 1.

[0030] Each lifting gear 15 is correspondingly provided to each lifting rod 14 , and the lifting gear 15 and the lifting rod 14 are meshed.

[0031] A transmission assembly is provided at the lower part of the back box 1, and the transmission assembly includes a spiral rotating rod 13 passing through the lower part of the back box 1, a rotating handle 10 is provided at one end of the spiral rotating rod 13, and a plurality of transmission connecting rings 2 are sleeved on the end away from the rotating handle 10, each transmission connecting ring 2 is provided with an internal thread matching the external thread of the spiral rotating rod 13, and a mold frame 3 is fixedly provided on the outside of each transmission connecting ring 2.

[0032] A limiting plate frame 7 and a roller frame 5 are respectively provided at both ends of the top of the base 9 along the width direction. The limiting plate frame 7 is fixed with a limiting plate perpendicular to the length direction of the back box 1. The limiting plate frame 7 and the roller frame 5 are clamped with a limiting plate parallel to the length direction of the back box 1, and each limiting plate is provided with a groove.

[0033] The side of the mold frame 3 away from the transmission connecting ring 2 is clamped in the groove of the limit plate parallel to the length direction of the back box 1, and the side of the mold frame 3 away from the transmission connecting ring 2 can slide back and forth in the groove of the limit plate parallel to the length direction of the back box 1.

[0034] A roller shaft 4 parallel to the width direction of the bottom box is movably provided on the roller shaft frame 5 , and the roller shaft 4 is arranged below the mold frame 3 .

[0035] A plurality of air vents are evenly arranged at the bottom of the upper bellows 12 and the top of the lower bellows 6. An upper blowing pipe 19 is movably inserted into the air vent opened at the bottom of the upper bellows 12, and an upper sealing ring 18 is provided at the contact position between the upper blowing pipe 19 and the air vent opened at the bottom of the upper bellows 12; a lower blowing pipe 16 is movably inserted into the air vent opened at the bottom of the lower bellows 6, and a lower sealing ring 17 is provided at the contact position between the lower blowing pipe 16 and the air vent opened at the bottom of the lower bellows 6.

[0036] Safety chains are provided on the four corners of the top of the upper bellows 12 , and one end of the safety chain away from the top of the upper bellows 12 is fixed to the ceiling.

[0037] The upper air blowing pipe 19 and the lower air blowing pipe 16 are both provided with a universal rotating pipe 20 at one end away from the respective bellows, and a blowing head 21 is provided at one end of the universal rotating pipe 20 away from the air blowing pipe.

[0038] When using this embodiment, the operator needs to make preliminary adjustments to the device according to the specifications and bending requirements of the glass to be processed.

[0039] Turning the handle 10 at one end of the spiral rod 13 in the transmission assembly rotates the spiral rod 13. Since the internal threads of the transmission connecting ring 2 match the external threads of the spiral rod 13, the transmission connecting ring 2 moves along the spiral rod 13, thereby driving the mold frame 3 fixed on the outside to slide within the groove of the limit plate parallel to the length of the back box 1, adjusting the mold frame 3 to the appropriate position.

[0040] Start the rotary motor, the rotary motor drives the power shaft to rotate, and the lifting gear 15 sleeved on the power shaft rotates accordingly. The lifting gear 15 engages with the lifting rod 14 fixed to one side of the upper bellows 12, driving the upper bellows 12 to rise or fall, and adjusting the upper bellows 12 to a suitable height.

[0041] The angle of the blowing head is adjusted by using the universal rotating tube 20 at the end of the upper blowing tube 19 and the lower blowing tube 16 so as to align it with the part of the glass that needs to be bent.

[0042] The glass to be processed is placed on the roller shaft 4 of the roller shaft frame 5. The limiting plate between the limiting plate frame 7 and the roller shaft frame 5 will position and support the glass to prevent the glass from shifting during the processing.

[0043] Hot air is introduced into the upper and lower bellows 12 and 6, respectively. The hot air passes through vents at the bottom of the upper bellows 12 and the top of the lower bellows 6, and is blown out of the blowing head through the upper and lower bellows 16, heating the glass. An upper sealing ring 18 is provided between the upper bellows 19 and the vent of the upper bellows 12, and a lower sealing ring 17 is provided between the lower bellows 16 and the vent of the lower bellows 6, effectively preventing leakage of the hot air and ensuring effective heating.

[0044] Under the effect of hot air, the glass gradually reaches a bendable temperature. At this moment, because the mold frame 3 has been adjusted to the proper position, the glass will begin to bend under the combined effect of hot air and mold frame 3 to form a required shape.

[0045] During the entire processing process, the safety chains installed at the four corners of the top of the upper bellows 12 are fixed to the ceiling. If an abnormal situation such as equipment failure causes the upper bellows 12 to loosen, the safety chains can prevent the upper bellows 12 from falling, ensuring the safety of the operator and the stable operation of the equipment.

[0046] When the glass is bent into a specified shape, stop blowing hot air into the upper wind box 12 and the lower wind box 6 and wait for the glass to cool and set.

[0047] The operator removes the bent glass from the roller, completing the glass bending process.

[0048] Example 2 A bending device for glass production like Figure 5 As shown, this embodiment relates to a bending device for glass production, which includes a base 9, an upper bellows 12 and a lower bellows 6 embedded on the top of the base 9.

[0049] A telescopic arm 22 is provided on the top of the upper bellows 12 , one end of the telescopic arm 22 is fixed to the center of the top of the upper bellows 12 , and the other end away from the top of the upper bellows 12 is fixed to the ceiling.

[0050] A transmission assembly is provided on one side of the base 9 , and the transmission assembly includes a plurality of roller frames 5 , and each roller frame 5 is movably provided with a roller 4 parallel to the base 9 .

[0051] Limiting plate frames 7 are fixedly set around the top of the base 9. Except for one side corresponding to the moving end of the roller shaft 4, the limiting plate frames on the other three sides are provided with limiting plates at one end away from the top of the base, and a rear slot is provided on the side of the limiting plate facing the lower bellows 6.

[0052] A plurality of air vents are evenly provided at the bottom of the upper bellows 12 and the top of the lower bellows 6. An upper blowing pipe 19 is movably inserted into the air vent opened at the bottom of the upper bellows 12, and an upper sealing ring 18 is provided at the contact position between the upper blowing pipe 19 and the air vent opened at the bottom of the upper bellows 12; a lower blowing pipe 16 is movably inserted into the air vent opened at the bottom of the lower bellows 6, and a lower sealing ring 18 is provided at the contact position between the lower blowing pipe 16 and the air vent opened at the bottom of the lower bellows 6.

[0053] Safety chains are provided on the four corners of the top of the upper bellows 12 , and one end of the safety chain away from the top of the upper bellows 12 is fixed to the ceiling.

[0054] The upper air blowing pipe 19 and the lower air blowing pipe 16 are both provided with a universal rotating pipe 20 at one end away from the respective bellows, and a blowing head 21 is provided at one end of the universal rotating pipe 20 away from the air blowing pipe.

[0055] When using this embodiment, the telescopic arm 22 is first used to adjust the height of the upper bellows 12. The operator operates the telescopic arm 22 to place the upper bellows at a suitable height according to the thickness and bending requirements of the glass to be processed, preparing for subsequent glass bending operations.

[0056] The angle of the blowing head can be flexibly adjusted through the universal swivel tube 20 at the ends of the upper blowing pipe 19 and the lower blowing pipe 16 to ensure that the blowing head can be accurately aligned with the part of the glass that needs to be bent, so as to achieve effective heating in subsequent processing.

[0057] The rollers 4 in the transmission assembly transport the glass to be processed to the processing area between the upper bellows 12 and the lower bellows 6. During the glass conveying process, the stopper plates 7 and the stopper plates around the top of the base 9 function to position and guide the glass, preventing it from shifting during conveyance and ensuring it reaches the intended processing position. The slots in the stopper plates further help secure the glass, keeping it stable during subsequent processing.

[0058] Hot air is introduced into the upper and lower bellows 12 and 6, respectively. The hot air passes through multiple vents evenly spaced at the bottom of the upper bellows 12 and the top of the lower bellows 6, and then through the upper and lower air pipes 19 and 16 before being blown out of the air blower head, heating the glass. The upper and lower sealing rings 18 and 17 prevent hot air from leaking, ensuring sufficient heat is applied to the glass, gradually bringing it to a bendable temperature.

[0059] When the glass is heated to the appropriate temperature, it becomes somewhat flexible. At this point, the glass can be bent into the desired shape through external mechanical force or the pressure differential created by the hot air. Thanks to the precise adjustment of the blowing head 21 angle and the stable positioning of the glass by the stopper plate, the accuracy and effectiveness of the glass bending can be guaranteed.

[0060] During the entire processing process, the safety chains set at the four corners of the top of the upper bellows 12 are fixed to the ceiling. If an abnormal situation such as equipment failure causes the upper bellows 12 to loosen, the safety chain can prevent the upper bellows 12 from falling, ensuring the safety of the operator and the stable operation of the equipment.

[0061] When the glass is bent to the required shape, the hot air is stopped from entering the upper and lower air boxes 12 and 6, and the glass is allowed to cool and set. After that, the roller 5 of the transmission assembly is used again to transport the bent glass out of the processing area, completing the glass bending operation.

[0062] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bending device for glass production, characterized in that: The bending device includes a base and a back box arranged at the rear of the top of the base. The back box is hollow inside, and a lifting assembly is arranged at the upper part of the back box, and a transmission assembly is arranged at the lower part. The lifting assembly is provided with an upper bellows; a lower bellows is embedded in the top of the base; an upper blower pipe and a lower blower pipe are respectively provided on the sides of the upper bellows and the lower bellows.

2. The bending device for glass production according to claim 1, characterized in that: The lifting assembly includes multiple groups of lifting gears arranged inside the back box, each of the lifting gears is mounted on a power shaft, and one end of the power shaft is fixedly connected to the power output end of the rotating motor; the lifting assembly includes multiple groups of lifting rods fixedly arranged on the side of the upper wind box facing the back box.

3. The bending device for glass production according to claim 2, characterized in that: Each of the lifting gears is correspondingly arranged to each of the lifting rods, and the lifting gears are meshed with the lifting rods.

4. The bending device for glass production according to claim 1, characterized in that: The transmission assembly is provided at the lower part of the back box, and the transmission assembly includes a spiral rotating rod passing through the lower part of the back box, one end of the spiral rotating rod is provided with a rotating handle, and the end away from the rotating handle is sleeved with a plurality of transmission connecting rings, each of the transmission connecting rings is provided with an internal thread matching the external thread of the spiral rotating rod, and a mold frame is fixedly provided on the outside of each transmission connecting ring.

5. The bending device for glass production according to claim 1, characterized in that: A limiting plate frame and a roller frame are respectively provided at both ends of the top of the base along the width direction. The limiting plate frame is fixed with a limiting plate perpendicular to the length direction of the back box. The limiting plate frame and the roller frame are clamped with a limiting plate parallel to the length direction of the back box, and each of the limiting plates is provided with a groove.

6. The bending device for glass production according to claim 4, characterized in that: The side of the mold frame away from the transmission connecting ring is clamped in the groove of the limit plate parallel to the length direction of the back box, and the side of the mold frame away from the transmission connecting ring can slide back and forth in the groove of the limit plate parallel to the length direction of the back box.

7. The bending device for glass production according to claim 5, characterized in that: A roller shaft parallel to the width direction of the bottom box is movably arranged on the roller shaft frame, and the roller shaft is arranged below the mold frame.

8. The bending device for glass production according to claim 1, wherein: A plurality of air vents are evenly provided at the bottom of the upper bellows and the top of the lower bellows, the upper blowing pipe is movably inserted into the air vents opened at the bottom of the upper bellows, and an upper sealing ring is provided at the contact position between the upper blowing pipe and the air vents opened at the bottom of the upper bellows; the lower blowing pipe is movably inserted into the air vents opened at the bottom of the lower bellows, and a lower sealing ring is provided at the contact position between the lower blowing pipe and the air vents opened at the bottom of the lower bellows.

9. The bending device for glass production according to claim 1, characterized in that: Safety chains are arranged on the four corners of the top of the upper bellows, and one end of the safety chain away from the top of the upper bellows is fixed to the ceiling.

10. The bending device for glass production according to claim 1, characterized in that: The upper air blowing pipe and the lower air blowing pipe are both provided with a universal rotating pipe at one end away from the respective bellows, and the universal rotating pipe is provided with a blowing head at one end away from the air blowing pipe.

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