Forming device for low-softening-temperature glass

Abstract

The invention discloses a forming device for low-softening-temperature glass, and belongs to the technical field of glass forming, the forming device comprises a base mounted on a workbench, the base is rotatably connected with a disc, the disc is provided with a graphite mold, the outer wall of the base is provided with a protective wall, the protective wall is provided with a control background and a supporting frame, and the supporting frame is arranged on the base. A metering assembly is arranged on the supporting frame, a discharging component is arranged at the bottom of the metering assembly, a driving structure is arranged at the top of the metering assembly, the metering assembly comprises a driving rod and a limiting cylinder, one end of the driving rod is connected with a metering cylinder, and a material guide table is arranged at a discharging port in the bottom of the metering cylinder. A sliding plate is arranged on the driving rod, a spring is connected between the sliding plate and a fixing plate at the top of the metering cylinder, and a feeding port is formed in the top of the feeding cylinder. The invention discloses the forming device which improves the precision and quality stability of glass forming so as to meet the diversified requirements of the modern industry for glass products.

Description

Technical Field

[0001] The invention relates to the technical field of glass forming, and in particular to a forming device for low softening temperature glass. Background Art

[0002] The commonly used molding method for low softening temperature glass is compression molding, which involves steps such as crushing, granulation, molding and sintering, and can produce prefabricated parts with high requirements on size and quality. During the molding process, the molten glass needs to be dripped into the blank mold through a drip tube. The drip tube controls the volume of the molten glass dripping into the mold. The molten glass is formed in the mold and cooled for a certain period of time before being fixed.

[0003] However, in controlling the amount of glass liquid discharged, traditional glass molding mostly uses ordinary valves or simple pumping devices. The molding accuracy is difficult to accurately control, resulting in large deviations in product dimensions and unable to adapt to the production needs of glass products with different specifications and different production rhythm requirements. Summary of the invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a molding device that improves the precision and quality stability of glass drop molding to meet the diverse needs of modern industry and society for high-quality glass products.

[0005] To achieve this object, the present invention adopts the following technical solutions: The present invention provides a forming device for low softening temperature glass, comprising a base installed on a workbench, the base being rotatably connected with a disc via a rotating shaft, the disc being installed with a plurality of graphite molds, the outer wall of the base being provided with a protective wall, one side of the outer wall of the protective wall being provided with a preheating device, a cooling device and a replenishing device, the protective wall being provided with a control backstage and a supporting frame, the supporting frame being provided with a metering component for controlling glass forming, a discharging component being provided at the bottom of the metering component, and a driving structure for driving the metering component to realize stable discharging of glass being provided at the top of the metering component; The metering assembly includes a driving rod slidably connected to the feeding barrel and a limiting barrel fixed to the inner wall of the feeding barrel through a support rod. One end of the driving rod passes through the limiting barrel and is slidably connected to the metering barrel. A material guide platform is provided at the discharge port at the bottom of the metering barrel. A sliding plate is provided on the driving rod. A spring is connected between the sliding plate and the fixed plate at the top of the metering barrel. A feed port is provided at the top of the feeding barrel.

[0006] A preferred technical solution of the present invention is that a feed opening is provided around the inclined end surface of the metering cylinder, and the inclined end surface fits with the inclined surface of the bottom of the limiting cylinder.

[0007] The preferred technical solution of the present invention is that the material guide platform includes a material guide seat arranged at the bottom discharge of the metering cylinder, the material guide seat is cone-shaped, and a material guide groove is arranged around the top inclined surface, and a discharge port connected to the material guide groove is opened at the bottom of the material guide seat.

[0008] The preferred technical solution of the present invention is that the discharging component includes an insulation cylinder, a crucible device is arranged on the top of the inner wall of the insulation cylinder, a heating element is arranged inside the crucible device, the crucible device is connected to the bottom discharging end of the metering component, the bottom of the crucible device is connected to a discharging bin, the bottom of the discharging bin is connected to a dripping pipe, a resistance wire is installed at the bottom of the discharging bin, and the resistance wire is arranged around the dripping pipe.

[0009] The preferred technical solution of the present invention is that one side of the inner wall of the insulation cylinder is connected to a nitrogen storage box through a nitrogen purge pipe, and an induction probe is provided on the side of the insulation cylinder away from the nitrogen purge pipe to detect whether the glass is discharged, and the nitrogen purge pipe and the induction probe are both located below the outlet of the drip tube, and the drip tube is a corundum tube.

[0010] The preferred technical solution of the present invention is that the driving structure includes a support plate fixed to the top of the feeding barrel, the support plate is rotatably connected to an incomplete gear, one side of the support plate is slidably connected to a U-shaped frame fixedly connected to a driving rod, the inner side wall of the U-shaped frame is provided with a tooth portion meshing with the incomplete gear, and the gear shaft of the incomplete gear is connected to a motor.

[0011] The preferred technical solution of the present invention is that a connecting sleeve is installed between the upper and lower molds of the graphite mold, and the graphite mold is installed on a slot opened on a disc through the connecting sleeve. The cavity of the graphite mold is surrounded by connecting grooves and is not connected to the cavity. A protective sleeve is provided at the outlet end of the connecting groove, and the protective sleeve is slidably connected to the base. A limiting plate is provided on the inner wall of the protective wall, which is in contact with and slidably connected to the outer wall of the graphite mold, and openings for loading and unloading the graphite mold are provided on the protective wall and the limiting plate.

[0012] The preferred technical solution of the present invention is that the preheating device includes a heating box, on which are respectively provided a preheating pipe and a first reflux pipe connected to the two end ports of the annular connecting groove, and the preheating pipe passes through the protective wall and the limiting plate and is connected to the connecting groove port inside the graphite mold.

[0013] The preferred technical solution of the present invention is that the cooling device and the supplementing device both include a cooling box, and the cooling box is respectively provided with a cooling pipe and a second return pipe connected to the ports at both ends of the connecting groove, and a valve is installed on the cooling pipe.

[0014] The beneficial effects of the present invention are: 1. The present invention controls the meshing operation of the incomplete gear and the tooth portion on the inner wall of the U-shaped frame by cooperating with the driving structure and the metering component through the control background. The control background can set the speed of the motor according to the operation requirements to control the meshing time of the incomplete gear and the tooth portion, thereby controlling the time when the glass powder enters the metering cylinder. When the incomplete gear rotates to a position where the tooth portion does not mesh, the driving rod drives the metering cylinder to reset under the elastic force of the spring, thereby realizing the control of the flow rate of the glass powder. The glass powder is heated by the crucible device to form a glass melt and is discharged from the dripping pipe, so that the glass melt can form glass droplets of uniform size and accurate weight, thereby avoiding the product size being too large and affecting the quality of glass forming, and can meet the production needs of glass products with different specifications and production rhythm requirements; 2. The present invention preheats the graphite mold by arranging a preheating device, which can effectively avoid the stress concentration phenomenon caused by excessive temperature difference when the glass droplets fall into the mold, ensure that the glass droplets can be spread and formed quickly and evenly in the mold cavity, significantly improve the molding quality and reduce the generation of internal defects; 3. The present invention can timely and effectively cool the graphite mold by providing a cooling device and a supplementary device, so that the glass product blank can be quickly solidified in a relatively short time, thereby improving production efficiency and ensuring the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of a glass forming device provided in a specific embodiment of the present invention; Figure 2 is a schematic structural diagram of a glass forming device provided in a specific embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of the metering component and the discharging component provided in a specific embodiment of the present invention; Figure 4 It is provided in the specific embodiment of the present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 is a schematic diagram of the working state of the metering component provided in a specific embodiment of the present invention; Figure 6 is a schematic diagram of a driving structure provided in a specific embodiment of the present invention; Figure 7 It is a schematic diagram of the graphite mold structure provided in a specific embodiment of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Base; 11. Protective wall; 12. Limit plate; 13. Opening; 14. Support frame; 2. Disc; 21. Slot; 3. Graphite mold; 31. Connecting sleeve; 32. Protective sleeve; 4. Metering assembly; 41. Feed barrel; 42. Feed port; 43. Limit barrel; 44. Driving rod; 45. Guide platform; 451. Guide seat; 452. Guide slot; 453. Discharge port; 46. Metering barrel; 461. Feed opening; 47. Sliding plate; 48. Spring; 5. Discharge component; 51. Insulation Cylinder; 52, crucible device; 53, discharge bin; 54, dripping pipe; 55, resistance wire; 56, nitrogen purge pipe; 57, induction probe; 6, driving structure; 61, support plate; 62, incomplete gear; 63, U-shaped frame; 64, tooth; 65, motor; 7, preheating device; 71, heating box; 72, preheating pipe; 73, first reflux pipe; 8, cooling device; 9, replenishing device; 91, cooling box; 92, cooling pipe; 93, valve; 94, second reflux pipe; 10, nitrogen storage box. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0018] Embodiment 1 Refer to the attached Figure 1-7 , a forming device for low softening temperature glass, comprising a base 1 installed on a workbench, a disc 2 is rotatably connected to the base 1 through a rotating shaft, a plurality of graphite molds 3 are installed on the disc 2, a protective wall 11 is arranged on the outer wall of the base 1, a preheating device 7, a cooling device 8 and a replenishing device 9 are arranged on one side of the outer wall of the protective wall 11, a control backstage and a supporting frame 14 are arranged on the protective wall 11, a metering component 4 for controlling glass molding is arranged on the supporting frame 14, a discharging component 5 is arranged at the bottom of the metering component 4, and a driving structure 6 for driving the metering component 4 to realize stable discharging of glass is arranged on the top of the metering component 4; The metering assembly 4 includes a driving rod 44 slidably connected to a feeding cylinder 41 and a limiting cylinder 43 fixed to the inner wall of the feeding cylinder 41 through a supporting rod. One end of the driving rod 44 passes through the limiting cylinder 43 and is slidably connected to a metering cylinder 46. A material guide platform 45 is provided at the discharge port at the bottom of the metering cylinder 46. A sliding plate 47 is provided on the driving rod 44. A spring 48 is connected between the sliding plate 47 and the fixed plate at the top of the metering cylinder 46. A feeding port 42 is provided at the top of the feeding cylinder 41. The inclined end surface of the metering cylinder 46 is surrounded by a feed opening 461 , and the inclined end surface fits with the inclined surface of the bottom of the limiting cylinder 43 . The control backstage is electrically connected with the driving structure 6 , the preheating device 7 , the cooling device 8 and the replenishing device 9 .

[0019] The graphite mold 3 is preheated by starting the preheating device 7 through the control background, so that the graphite mold 3 is heated evenly. The preheating treatment can effectively avoid the stress concentration caused by the large temperature difference when the glass melt falls into the graphite mold 3, ensure that the glass droplets can be quickly and evenly spread and formed in the mold cavity, improve the quality of glass molding, and reduce the generation of internal defects. The glass powder is added to the feeding cylinder 41 from the feeding port 42, and the driving structure 6 is controlled by the control background to operate, so that the driving structure 6 drives the driving rod 44 to move downward. The driving rod 44 drives the metering cylinder 46 to slide downward along the inner wall of the limiting cylinder 43. When the feeding opening 461 moves downward, it is separated from the inclined surface at the bottom of the limiting cylinder 43, and the glass powder in the feeding cylinder 41 passes through the feeding opening 461 and enters the metering cylinder 4 6, the operating time of the driving structure 6 is set by controlling the background to control the amount of glass powder in the feeding cylinder 41 entering the metering cylinder 46, so that the glass powder can be stably and accurately discharged to the discharging component 5 through the guide table 45, so as to ensure that the subsequent glass powder can form glass droplets of uniform size and accurate weight after being heated by the discharging component 5, so as to avoid the product size being too large and affecting the quality of glass molding, and can adapt to the production needs of glass products with different specifications and production rhythm requirements. When the driving structure 6 works to the point where the driving rod 44 cannot be controlled to move, the driving rod 44 drives the metering cylinder 46 to move to a state where the inclined end face is in contact with the bottom inclined surface of the limiting cylinder 43 under the action of the spring 48. At this time, the metering cylinder 46 is no longer fed, thereby ensuring the volume of the glass powder in the metering cylinder 46; After the glass powder is formed into a glass melt by the discharge component 5, it is dripped into the graphite mold 3. The control background controls the rotation of the shaft to drive the disc 2 to rotate, so that the graphite mold 3 with the glass liquid dripped into it after preheating is rotated to a position connected with the cooling device 8. The next group of graphite molds 3 are preheated, and the control background controls the cooling device 8 to operate, so that the cooling device 8 cools the graphite mold 3 with the glass dripped into it. During the operation of the entire molding device, a supplementary device 9 is also provided. When the graphite mold 3 leaves the cooling device 8, in order to ensure the cooling effect of the glass product, the cooling effect on the graphite mold 3 is supplemented in time by the supplementary device 9, so as to ensure that the glass product can be quickly and evenly cooled and solidified to meet the demolding strength standard, while ensuring the quality and stability of the glass product.

[0020] Refer to the attached Figure 4 In order to ensure the glass forming accuracy and product quality and reduce product size deviation, as a possible implementation method of this scheme, preferably, the material guide platform 45 includes a material guide seat 451 arranged at the bottom discharge position of the metering cylinder 46, and the material guide seat 451 is conical, and a material guide groove 452 is arranged around the top inclined surface, and a discharge port 453 connected to the material guide groove 452 is opened at the bottom of the material guide seat 451.

[0021] The glass powder entering the metering cylinder 46 enters the interior of the material guide table 45 from the material guide grooves 452 opened around the material guide table 45, and is concentrated to flow to the discharge port 453 and then discharged to the discharge component 5, so that the glass powder can be concentrated and quickly discharged into the discharge component 5 before being discharged, which is convenient for the subsequent heating of the glass powder to improve the quality of subsequent molding.

[0022] Embodiment 2 Refer to the attached Figure 3 In order to avoid solidification of the glass melt during the discharging process and affect the glass molding, as a possible implementation method of the present scheme, preferably, the discharging component 5 includes an insulation cylinder 51, and a crucible device 52 is arranged on the top of the inner wall of the insulation cylinder 51. A heating element is arranged inside the crucible device 52 for heating the glass powder. The crucible device 52 is connected to the bottom discharging end of the metering component 4, and a discharging bin 53 is connected to the bottom of the crucible device 52. A dripping pipe 54 is connected to the bottom of the discharging bin 53. A resistance wire 55 is installed at the bottom of the discharging bin 53, and the resistance wire 55 is arranged around the dripping pipe 54.

[0023] The crucible device 52 is preheated in advance so that the glass powder can be heated to form a glass melt after entering the crucible device 52, and the glass melt is dripped into the graphite mold 3 through the drip tube 54. A resistance wire 55 is provided and the heating temperature is controlled by the control background to prevent the glass melt from solidifying due to excessive cooling during discharge, thereby affecting the quality of subsequent glass molding.

[0024] Refer to the attached Figure 3 In order to improve the quality of glass forming and ensure the discharging of glass melt, as a possible implementation method of the present scheme, preferably, one side of the inner wall of the insulation cylinder 51 is connected to the nitrogen storage box 10 through a nitrogen purge pipe 56, and a sensing probe 57 is provided on the side of the insulation cylinder 51 away from the nitrogen purge pipe 56 to detect whether the glass is discharged. The nitrogen purge pipe 56 and the sensing probe 57 are both located below the outlet of the drip pipe 54, and the drip pipe 54 is a corundum tube.

[0025] Through the nitrogen purge tube 56, when the glass melt is discharged, the nitrogen blown out can effectively prevent the glass from being oxidized, and the induction probe 57 can effectively monitor whether the glass melt falls, so that the glass melt can effectively drip into the graphite mold 3, and be expanded and formed in time, thereby improving the quality of glass forming.

[0026] Embodiment 3 Refer to the attached Figure 6In order to make the glass powder cooperate with the metering cylinder 46 and ensure that glass droplets of uniform size and precise weight can be formed after subsequent heating, as a possible implementation method of this scheme, preferably, the driving structure 6 includes a support plate 61 fixed to the top of the feeding cylinder 41, and the support plate 61 is rotatably connected to the incomplete gear 62. One side of the support plate 61 is slidably connected to a U-shaped frame 63 fixedly connected to the driving rod 44, and the inner side wall of the U-shaped frame 63 is provided with a tooth portion 64 meshing with the incomplete gear 62, and the gear shaft of the incomplete gear 62 is connected to a motor 65.

[0027] The control background controls the motor 65 to rotate, and the motor 65 drives the incomplete gear 62 to rotate. When the incomplete gear 62 meshes with the tooth portion 64 on the inner wall of the U-shaped frame 63, the U-shaped frame 63 and the driving rod 44 fixed to the bottom of the U-shaped frame 63 are driven to move downward. The control background can set the speed of the motor 65 according to the operation requirements to control the time when the incomplete gear 62 meshes with the tooth portion 64, thereby controlling the time when the glass powder enters the metering cylinder 46. When the incomplete gear 62 rotates to a position where the tooth portion 64 does not mesh, under the elastic force of the spring 48, the driving rod 44 drives the metering cylinder 46 to reset, that is, to fit the bottom inclined surface of the limit cylinder 43. At this time, the glass powder no longer enters the metering cylinder 46, thereby realizing the control of the glass powder flow rate, ensuring the flow accuracy of the glass melt after subsequent heating dripping into the graphite mold 3, and ensuring that the weight and volume of the glass droplets meet the production requirements.

[0028] Embodiment 4 Refer to the attached Figure 7 To facilitate the loading and unloading of the graphite mold 3, as a possible implementation mode of the present scheme, preferably, a connecting sleeve 31 is installed between the upper and lower molds of the graphite mold 3, and the graphite mold 3 is installed on the slot 21 opened on the disc 2 through the connecting sleeve 31. The cavity of the graphite mold 3 is surrounded by connecting grooves that are not connected to the cavity. A protective sleeve 32 is provided at the outlet end of the connecting groove. The protective sleeve 32 is slidably connected to the base 1. A limiting plate 12 is provided on the inner wall of the protective wall 11, which is in contact with and slidably connected to the outer wall of the graphite mold 3. An opening 13 for loading and unloading the graphite mold 3 is provided on the protective wall 11 and the limiting plate 12.

[0029] When installing the graphite mold 3, the assembled graphite mold 3 is inserted into the slot 21 of the disc 2. The stability of the installation of the graphite mold 3 is improved by setting the connecting sleeve 31. At the same time, it corresponds to the angle of the glass droplets to ensure that the glass droplets enter the graphite mold 3 and are formed, which also facilitates the subsequent removal of the graphite mold 3 for demolding.

[0030] Refer to the attached Figure 2 and 7In order to improve the efficiency of timely cooling and solidification of the glass product blank in the graphite mold 3, as a possible implementation mode of the present scheme, preferably, the preheating device 7 includes a heating box 71, and the heating box 71 is respectively provided with a preheating pipe 72 and a first reflux pipe 73 connected to the two end ports of the annular connecting groove, and the preheating pipe 72 passes through the protective wall 11 and the limiting plate 12 and is connected to the connecting groove port inside the graphite mold 3.

[0031] The cooling device 8 and the replenishing device 9 both include a cooling box 91 , on which a cooling pipe 92 and a second return pipe 94 communicating with ports at both ends of the connecting groove are respectively provided, and a valve 93 is installed on the cooling pipe 92 .

[0032] When the graphite mold 3 with the glass droplets dripped into it rotates to the position where the internal connecting groove is connected to the cooling pipe 92 under the operation of the control background, the control background control valve 93 is started, and the cooling air in the cooling box 91 enters the connecting groove through the cooling pipe 92 to cool the graphite mold 3. To ensure the cooling effect, when the graphite mold 3 leaves the position connected to the cooling pipe 92 and the second return pipe 94, the cooling air is supplemented to the graphite mold 3 through the supplement device 9, so that the glass product blank in the graphite mold 3 can be quickly solidified in a shorter time, thereby improving production efficiency and ensuring the consistency of product quality.

[0033] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A molding device for low softening temperature glass, characterized in that: The invention comprises a base (1) mounted on a workbench, a disc (2) being rotatably connected to the base (1) via a rotating shaft, a plurality of groups of graphite molds (3) being mounted on the disc (2), a protective wall (11) being arranged on the outer wall of the base (1), a preheating device (7), a cooling device (8) and a replenishing device (9) being arranged on one side of the outer wall of the protective wall (11), a control backstage and a support frame (14) being arranged on the protective wall (11), a metering component (4) for controlling glass molding being arranged on the support frame (14), a discharging component (5) being arranged at the bottom of the metering component (4), and a driving structure (6) for driving the metering component (4) to achieve stable discharging of glass being arranged at the top of the metering component (4); The metering assembly (4) comprises a driving rod (44) slidably connected to a feeding cylinder (41) and a limiting cylinder (43) fixed to the inner wall of the feeding cylinder (41) via a supporting rod; one end of the driving rod (44) passes through the limiting cylinder (43) and is slidably connected to a metering cylinder (46); a material guide platform (45) is provided at a discharge port at the bottom of the metering cylinder (46); a sliding plate (47) is provided on the driving rod (44); a spring (48) is connected between the sliding plate (47) and a fixed plate at the top of the metering cylinder (46); and a feeding port (42) is provided at the top of the feeding cylinder (41).

2. A forming device for low softening temperature glass according to claim 1, characterized in that: Feed openings (461) are formed around the inclined end surface of the metering cylinder (46), and the inclined end surface fits the inclined surface of the bottom of the limiting cylinder (43).

3. A forming device for low softening temperature glass according to claim 1, characterized in that: The material guide platform (45) comprises a material guide seat (451) arranged at the material discharge position at the bottom of the metering cylinder (46); the material guide seat (451) is in a cone shape, and material guide grooves (452) are arranged around the top inclined surface; and a discharge port (453) communicating with the material guide groove (452) is opened at the bottom of the material guide seat (451).

4. A forming device for low softening temperature glass according to claim 1, characterized in that: The discharge component (5) comprises a heat preservation cylinder (51), a crucible device (52) is arranged at the top of the inner wall of the heat preservation cylinder (51), a heating element is arranged inside the crucible device (52), the crucible device (52) is connected to the discharge end at the bottom of the metering component (4), the bottom of the crucible device (52) is connected to a discharge bin (53), the bottom of the discharge bin (53) is connected to a dripping pipe (54), and a resistance wire (55) is installed at the bottom of the discharge bin (53), and the resistance wire (55) is arranged around the dripping pipe (54).

5. A forming device for low softening temperature glass according to claim 4, characterized in that: One side of the inner wall of the heat preservation tube (51) is connected to a nitrogen storage box (10) via a nitrogen purge tube (56); a sensing probe (57) is provided on the side of the heat preservation tube (51) away from the nitrogen purge tube (56) to detect whether the glass has been discharged; the nitrogen purge tube (56) and the sensing probe (57) are both located below the outlet of the drip tube (54); and the drip tube (54) is a corundum tube.

6. A forming device for low softening temperature glass according to claim 1, characterized in that: The driving structure (6) comprises a support plate (61) fixed to the top of the feeding barrel (41), the support plate (61) being rotatably connected to an incomplete gear (62), one side of the support plate (61) being slidably connected to a U-shaped frame (63) fixedly connected to a driving rod (44), an inner side wall of the U-shaped frame (63) being provided with a tooth portion (64) meshing with the incomplete gear (62), and a gear shaft of the incomplete gear (62) being connected to a motor (65).

7. A forming device for low softening temperature glass according to claim 1, characterized in that: A connecting sleeve (31) is installed between the upper and lower molds of the graphite mold (3), and the graphite mold (3) is installed on the slot (21) provided on the disc (2) through the connecting sleeve (31). The mold cavity of the graphite mold (3) is surrounded by a connecting slot that is not connected to the mold cavity. A protective sleeve (32) is provided at the outlet end of the connecting slot. The protective sleeve (32) is slidably connected to the base (1). A limiting plate (12) is provided on the inner wall of the protective wall (11) and is in contact with and slidably connected to the outer wall of the graphite mold (3). The protective wall (11) and the limiting plate (12) are provided with openings (13) for loading and unloading the graphite mold (3).

8. A forming device for low softening temperature glass according to claim 7, characterized in that: The preheating device (7) comprises a heating box (71), on which a preheating pipe (72) and a first reflux pipe (73) are respectively provided, which are connected to the ports at both ends of the annular connecting groove, and the preheating pipe (72) passes through the protective wall (11) and the limiting plate (12) and is connected to the connecting groove port inside the graphite mold (3).

9. A forming device for low softening temperature glass according to claim 1, characterized in that: The cooling device (8) and the replenishing device (9) both comprise a cooling box (91), the cooling box (91) being provided with a cooling pipe (92) and a second return pipe (94) respectively connected to ports at both ends of the connecting groove, and the cooling pipe (92) being provided with a valve (93).

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