CN216764699U

CN216764699U - Forming die for large-diameter sheet glass

Info

Publication number: CN216764699U
Application number: CN202220328983.1U
Authority: CN
Inventors: 谈建龙; 刘成; 辜健; 史思学
Original assignee: Cdgm LLC
Current assignee: Cdgm LLC
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-06-17
Anticipated expiration: 2032-02-17

Abstract

The utility model provides a forming die for large-caliber sheet glass. The forming die for the large-caliber sheet glass comprises a baking pan block, a combined bottom die, a side die and a side retainer, wherein the combined bottom die is formed by combining a first bottom die and a second bottom die; the left side block and the right side block are fixed on two side edges of the combined bottom die, the left side die and the right side die are arranged in the combined bottom die and abut against the two side blocks, and the baking pan block is arranged at the discharging end of the combined bottom die. The forming die for the large-caliber sheet glass can be used for producing large-caliber radiation-resistant glass sheet products with the width of more than or equal to 500mm and the thickness of less than or equal to 30mm, and has the advantages of long service life, simple structure, low cost, safe and reliable use process, convenient replacement and the like.

Description

Forming die for large-diameter sheet glass

Technical Field

The utility model belongs to the technical field of glass forming, and particularly relates to a forming die for large-caliber sheet optical glass and large-caliber radiation-resistant sheet glass.

Background

When the optical glass and the radiation-resistant glass are produced, the prepared powder is melted at high temperature in a kiln, the melted glass liquid is placed to a platinum part through a platinum guide pipe for high-temperature process treatment, then the glass liquid is discharged to a mold through a platinum discharge guide pipe for cooling and shaping, and the shaped optical glass is subjected to rough annealing of a mesh-belt annealing furnace and then cut to obtain the final optical glass or the radiation-resistant glass.

The mainstream production mode of the optical glass and the radiation-proof glass at present is the continuous melting production of the porcelain platinum, and the forming mode is the continuous drawing forming production. The continuous drawing forming is mainly that molten glass flows out to a specific mould through a platinum discharging guide pipe, the molten glass enters an annealing furnace through the heat conduction of the mould, the cooling and the shaping of the mould and the traction of a mesh belt type annealing furnace, and the batch production of the optical glass and the radiation-resistant glass is formed through continuous drawing and annealing. However, the existing drawing and forming mode is limited by the technological parameters and performances of viscosity, temperature, crystallization, flow rate and the like of molten glass, and the continuous drawing and forming mode can only produce optical glass and radiation-proof glass with the width less than or equal to 500mm and the thickness more than or equal to 30 mm.

The radiation-resistant glass sheets and the optical glass sheets with large calibers, the widths of which are more than or equal to 500mm and the thicknesses of which are less than or equal to 30mm, can be produced only by drawing thick products to perform sheet cutting processing or rolling forming, but the sheet cutting processing is performed by drawing the thick products to produce the sheet glass with the large calibers, the widths of which are more than or equal to 500mm and the thicknesses of which are less than or equal to 30mm, and the defects of long sheet cutting period, high sheet cutting cost, easy glass breakage in the sheet cutting process and the like exist; the large-caliber sheet glass with the width more than or equal to 500mm and the thickness less than or equal to 30mm is produced by a roll forming mode, and the defects of large flow required by roll forming, long roll forming debugging period, large fixed asset investment amount and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a forming die for large-caliber sheet glass.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the forming die for the large-caliber sheet glass comprises a baking pan block, a combined bottom die, a side die and a side block, wherein the combined bottom die is formed by combining a first bottom die and a second bottom die; the left side block and the right side block are fixed on two side edges of the combined bottom die, the left side die and the right side die are arranged in the combined bottom die and are abutted against the two side blocks, and the baking pan block is arranged at the discharging end of the combined bottom die.

Further, the upper surface of the first bottom die is a first bottom die working surface, and the first bottom die working surface is an inclined surface with an inclination angle of 5-30 degrees; the upper surface of the second bottom die is a second bottom die working surface, and the second bottom die working surface and the first bottom die working surface form a working surface of the combined bottom die together; the side die is characterized in that a side die working surface is arranged on the side die, the side die working surface is an inclined surface with an inclination angle of 10-30 degrees, and the side die working surface is matched with the first bottom die working surface in shape.

Furthermore, a first cooling hole is formed in the first bottom die in the longitudinal direction, a first through hole is formed in the side edge of the first bottom die, and all the first cooling holes in the first bottom die are communicated through the first through hole.

Furthermore, the second bottom die is provided with transverse through cooling holes with unequal intervals.

Furthermore, a notch matched with the shape of the first bottom die is formed in the second bottom die.

Further, the small pan blocks are provided with small pan block working surfaces, and the small pan block working surfaces are inclined surfaces with the inclination angle alpha of 15-75 degrees.

Furthermore, the rear end of the small pan block is provided with second cooling holes which are uniformly distributed, and the side edge of the small pan block is provided with second through holes which are used for communicating all the second cooling holes.

Furthermore, the lower end of the side die is provided with a hook.

Furthermore, the side blocks are fixed on two sides of the combined bottom die through screws.

Furthermore, an inverted groove is formed in the side block.

The utility model has the beneficial effects that: the forming die for the large-caliber sheet glass can be used for producing large-caliber radiation-proof glass sheet products with the width of more than or equal to 500mm and the thickness of less than or equal to 30mm, and has the advantages of long service life, simple structure, low cost, safe and reliable use process, convenience in replacement and the like.

Drawings

Fig. 1 is a schematic structural view of a molding die of the present invention.

Fig. 2 is a front sectional view of a first mold of the composite mold of the molding die of the present invention.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a front sectional view of a second mold of the composite mold of the molding die of the present invention.

Fig. 5 is a side view of fig. 4.

FIG. 6 is a sectional view of a front view of a pan block of the forming die of the present invention.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a schematic view showing the structure of a side mold of the molding die of the present invention.

Fig. 9 is a schematic structural view of a side stop of the forming die of the utility model.

FIG. 10 is a schematic view showing a state of use of the molding die of the present invention.

Detailed Description

As shown in fig. 1, the forming mold for large-caliber sheet glass of the present invention comprises a blank block 1, a combined bottom mold 2, a side mold 3 and a side block 4, wherein the combined bottom mold 2 is formed by combining a first bottom mold 21 and a second bottom mold 22; the left side baffle 4 and the right side baffle 4 are fixed on two side edges of the combined bottom die 2, the left side die 3 and the right side die 3 are arranged in the combined bottom die 2 and are close to the two side baffles 4, and the baking pan block 1 is arranged at the discharging end of the combined bottom die 2.

As shown in fig. 2-5, the combined bottom die 2 is formed by inlaying and combining a first bottom die 21 and a second bottom die 22 made of two different materials, wherein the first bottom die 21 is made of aluminum bronze, heat-resistant ductile cast iron or stainless steel, preferably aluminum bronze, and the second bottom die 22 is made of aluminum bronze, heat-resistant ductile cast iron or stainless steel, preferably heat-resistant ductile cast iron; the upper surface of the first bottom die 21 is a first bottom die working surface 23, the first bottom die working surface 23 is a 100-350mm long inclined plane, the inclination angle of the inclined plane is 5-30 degrees, and the inclined plane mainly has the function of facilitating the spreading of the high-temperature glass liquid on the combined bottom die 2 and spreading the high-temperature glass liquid into a large-caliber optical glass sheet or a large-caliber radiation-proof glass sheet product with the width of more than or equal to 500mm and the thickness of less than or equal to 30 mm; the first bottom die 21 is provided with a first cooling hole 24 in the longitudinal direction for heat dissipation of the first bottom die 21 and rapid cooling and shaping of glass in the forming process, the longitudinal direction refers to the flowing direction of the glass liquid, and the transverse direction refers to the direction perpendicular to the longitudinal direction, which is the same as the following; when the number of the first cooling holes 24 is odd, the cooling medium is introduced from the

middle

1 or 3 cooling holes; when the number of the first cooling holes 24 is even, the cooling medium is introduced from the

middle

2 or 4 cooling holes, and the remaining cooling holes discharge the medium to cool the first bottom mold 21; the first through hole 25 is formed in the side of the first bottom die 21, the first through hole 25 penetrates all the first cooling holes 24 of the first bottom die 21, and the inlet of the first through hole 25 is sealed by using an internal thread wound with a green tape to prevent air leakage and water leakage. The first through hole 25 is mainly used for conveying the cooling medium entering the first cooling hole 24 to a designated position of the first bottom die 21 to cool the die, and discharging the cooling medium along the corresponding first cooling hole 24 after cooling; the upper surface of the second bottom die 22 is a second bottom die working surface 26, and the second bottom die working surface 26 and the first bottom die working surface 23 form a working surface of the combined bottom die together; a notch 27 is formed in the second bottom die 22, the shape of the notch is matched with that of the first bottom die 21, and the notch is used for assembling the second bottom die 22 and the first bottom die 21; the second bottom die 22 is provided with transverse through cooling holes 28 with different intervals for cooling and shaping the glass transmitted from the first bottom die 21; the side edge of the second bottom die 22 is further provided with a plurality of threaded holes 29, so that the side block 4 and the combined bottom die 2 can be fixed through screws.

As shown in FIGS. 6-7, the pan block 1 is provided with a pan block working surface 11, the pan block working surface 11 is an inclined surface, and the inclination angle alpha is 15-75 degrees; the rear end of the small pan block 1 is provided with second cooling holes 12 which are uniformly distributed and used for cooling a mould in the forming process so as to prevent molten glass from being adhered to the small pan block 1; when the number of the second cooling holes 12 is odd, the cooling medium is introduced from the

middle

1 or 3 cooling holes; when the number of the second cooling holes 12 is even, the cooling medium is introduced from the 2 or 4 cooling holes at the center, and the remaining cooling holes are discharged with the medium, so as to achieve the purpose of cooling the pan block 1; the side of the pan block 1 is provided with a second through hole 13 which is used for penetrating all the second cooling holes 12 on the pan block 1. When the cooling device is in operation, the inlet of the second through hole 13 is sealed by using the mode of winding the internal thread with the adhesive tape to prevent air leakage and water leakage, the second through hole 13 is mainly used for conveying the cooling medium entering the second cooling hole 12 to the appointed part of the pan block 1, cooling the mould, and discharging the cooling medium along the corresponding second cooling hole 12 after cooling. The pan block 1 can be made of aluminum bronze, heat-resistant nodular cast iron or stainless steel, and is preferably made of aluminum bronze.

As shown in fig. 8, the side die 3 is provided with a side die working surface 31 with a length of 100-350mm, the side die working surface 31 is an inclined surface, the inclined angle of the inclined surface is 10-30 degrees, and the side die working surface 31 is matched with the first bottom die working surface 23 in shape, so that the side die is convenient to be matched with the combined bottom die 2 for use; the lower end of the side die 3 is provided with a hook 32; the side die 3 is made of aluminum bronze, heat-resistant nodular cast iron and stainless steel, and the aluminum bronze is preferably adopted.

As shown in fig. 9, side stoppers 4 are disposed on both sides of the combined bottom mold 2, and the side stoppers 4 are fixed on both sides of the combined bottom mold 2 by screws; the side block 4 is provided with an inverted groove 41, and the main function of the groove 41 is to not influence the use of the through cooling hole 28 on the second bottom die 22; the side baffle 4 is made of heat-resistant nodular cast iron or stainless steel, and preferably made of stainless steel.

According to the viscosity, the temperature and the flow of the produced molten glass, determining an inclination angle alpha on the small pan block 1, an inclined plane angle of the first bottom die working surface 23 and an inclined plane angle of the side die working surface 31, selecting the small pan block 1 and the side die 3 which are suitable for production, and polishing the inner sides of the small pan block working surface 11, the first bottom die working surface 23, the side die working surface 31 and the side die 3 by using sand paper or a hand grinding wheel for later use; the first bottom die 21 is placed on the notch 27 of the second bottom die 22, the side stoppers 4 are fixed on two side edges of the combined bottom die 2 through screws, the side die 3 is placed in the combined bottom die 2 and abuts against the two side stoppers 4, a side die working surface 31 on the side die 3 is tightly attached to the first bottom die working surface 23, the side die 3 is hooked on the combined bottom die 2 through a hook 32 on the side die 3, and finally the baking pan block 1 is placed at the discharging end of the combined bottom die 2.

After the forming die for the large-caliber sheet glass is assembled, the second cooling hole 12 on the small pan block 1, the first cooling hole 24 on the first bottom die 21 and the through cooling hole 28 on the second bottom die 22 are connected with a copper pipe and a hose, a cooling medium is introduced, the temperature of the discharge pipe is raised, so that molten glass 5 flows out of the discharge pipe onto the working surface 23 of the first bottom die, the molten glass is rapidly spread to the required production width and thickness through the inclined surface of the working surface 23 of the first bottom die, and then enters a traction furnace for annealing through the traction of a front traction furnace, and finally the required large-caliber optical glass sheet or large-caliber radiation-resistant glass sheet is obtained.

Claims

1. Heavy-calibre sheet glass's forming die, its characterized in that: the combined bottom die comprises a baking pan block (1), a combined bottom die (2), a side die (3) and a side block (4), wherein the combined bottom die (2) is formed by combining a first bottom die (21) and a second bottom die (22); the left side baffle and the right side baffle (4) are fixed on two side edges of the combined bottom die (2), the left side die and the right side die (3) are arranged in the combined bottom die (2) and are close to the two side baffles (4), and the baking pan block (1) is arranged at the discharging end of the combined bottom die (2).

2. The forming die for large-caliber sheet glass according to claim 1, wherein: the upper surface of the first bottom die (21) is a first bottom die working surface (23), and the first bottom die working surface (23) is an inclined surface with an inclination angle of 5-30 degrees; the upper surface of the second bottom die (22) is a second bottom die working surface (26), and the second bottom die working surface (26) and the first bottom die working surface (23) form a working surface of the combined bottom die together; the side die is characterized in that a side die working surface (31) is arranged on the side die (3), the side die working surface (31) is an inclined surface with an inclination angle of 10-30 degrees, and the side die working surface (31) is matched with the first bottom die working surface (23) in shape.

3. The forming die for large-caliber sheet glass according to claim 1, wherein: first die block (21) is provided with first cooling hole (24) on vertically, be provided with first through-hole (25) on first die block (21) side, first through-hole (25) link up all first cooling hole (24) on with first die block (21).

4. The forming die for large-caliber sheet glass according to claim 1, wherein: and transverse through cooling holes (28) with unequal intervals are formed in the second bottom die (22).

5. The forming die for large-caliber sheet glass according to claim 1, wherein: and a notch (27) matched with the first bottom die (21) in shape is formed in the second bottom die (22).

6. The forming die for large-caliber sheet glass according to claim 1, wherein: the small pan block (1) is provided with a small pan block working surface (11), and the small pan block working surface (11) is an inclined surface with an inclination angle alpha of 15-75 degrees.

7. The forming die for large-caliber sheet glass according to claim 1, wherein: the rear end of the small pan block (1) is provided with second cooling holes (12) which are evenly distributed, and the side edge of the small pan block (1) is provided with second through holes (13) which are used for communicating all the second cooling holes (12).

8. The forming die for large-caliber sheet glass according to claim 1, wherein: the lower end of the side die (3) is provided with a hook (32).

9. The forming die for large-caliber sheet glass according to claim 1, wherein: the side baffles (4) are fixed on two sides of the combined bottom die (2) through screws.

10. The forming die for large-caliber sheet glass according to claim 1, wherein: an inverted groove (41) is arranged on the side block (4).