CN111825308A - Optical glass strip forming device - Google Patents
Optical glass strip forming device Download PDFInfo
- Publication number
- CN111825308A CN111825308A CN201910317089.7A CN201910317089A CN111825308A CN 111825308 A CN111825308 A CN 111825308A CN 201910317089 A CN201910317089 A CN 201910317089A CN 111825308 A CN111825308 A CN 111825308A
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- Prior art keywords
- optical glass
- glass
- die
- bottom mold
- forming device
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses an optical glass strip forming device which comprises a base, a bottom die fixed on the base, side dies detachably fixed on two sides of the bottom die respectively and a plug, wherein the two side dies are arranged in parallel, so that a rectangular groove structure is formed between the two side dies, and one end of the rectangular groove structure is provided with the plug detachably fixed on the bottom die; a heating device is arranged in each side die; the base, the die block with the end cap is inside all to be provided with the cooling tube. The problems that the conventional forming device is utilized to process optical glass strips, the glass temperature is difficult to rapidly span a crystallization temperature range, so that the surface of glass is crystallized, deep stripes are generated, the product yield is low, and meanwhile, the formed strips are irregular in shape, and the components of molten glass are easy to volatilize in the forming process to cause stripe defects are solved.
Description
Technical Field
The invention relates to the field of optical glass melting and forming, in particular to an optical glass strip forming device.
Background
In the field of optical glass melting and forming, a strip material forming process is a main forming process, molten glass in a molten state flows out through a discharge pipe, enters a forming die, is naturally formed through the die, is annealed through a traction furnace, and is finally cut into required sizes through frying. The traditional forming device for optical glass generally comprises a bottom die, a base, a side die and a plug, the traditional forming device is used for processing optical glass strips, the glass temperature is difficult to rapidly span a crystallization temperature range, so that the crystallization on the surface of glass is caused, deep stripes are generated, the product yield is low, the shape of the formed strips is irregular, and the components of glass liquid are easy to volatilize in the forming process to cause stripe defects.
Disclosure of Invention
The invention aims to provide an optical glass strip forming device, which solves the problems that the conventional forming device is used for processing optical glass strips, the glass temperature is difficult to rapidly cross a crystallization temperature range, so that the surface of glass is crystallized, deep stripes are generated, the product yield is low, the formed strips are irregular in shape, and components of glass liquid are easy to volatilize in the forming process to cause stripe defects.
In order to achieve the purpose, the invention provides an optical glass strip forming device which comprises a base, a bottom die fixed on the base, side dies and plugs detachably fixed on two sides of the bottom die respectively, wherein the two side dies are arranged in parallel, so that a rectangular groove structure is formed between the two side dies, and one end of the rectangular groove structure is provided with the plug detachably fixed on the bottom die;
a heating device is arranged in each side die;
the base, the die block with the end cap is inside all to be provided with the cooling tube.
Preferably, cooling gas is introduced into the cooling pipe;
the cooling gas is compressed air or inert gas.
Preferably, the heating means comprises a rectangular heater;
the length of the rectangular heater is 450-470mm, the width is 18-22mm, and the height is 18-22 mm;
wherein, the cold end of the rectangular heater is 250-270mm, and the hot end of the rectangular heater is 180-200 mm.
Preferably, the heating device further comprises a temperature thermocouple fixed on the side die and used for monitoring the heating temperature of the rectangular heater.
Preferably, the cooling pipe located inside the bottom die is of a bellows structure.
Preferably, the two ends of the bottom die from left to right are respectively the front end and the rear end of the bottom die, and the plug is close to the front end of the bottom die;
a discharging pipe is arranged above the rectangular groove structure and close to the front end of the bottom die, so that high-temperature glass liquid flowing out of the discharging pipe can flow into the rectangular groove.
Preferably, the cooling pipe inside the bottom die is close to the rear end of the bottom die.
Preferably, the heating device is close to the front end of the bottom die.
Preferably, the optical glass strip forming device further comprises a laser thickness gauge arranged above the bottom die.
Preferably, the laser thickness gauge is located 1.5-2m above the bottom die.
According to the technical scheme, the invention provides an optical glass strip forming device which comprises a base, a bottom die fixed on the base, side dies and plugs detachably fixed on two sides of the bottom die respectively, wherein the two side dies are arranged in parallel, so that a rectangular groove structure is formed between the two side dies, and one end of the rectangular groove structure is provided with the plug detachably fixed on the bottom die; a heating device is arranged in each side die; cooling pipes are arranged in the base, the bottom die and the plug; the forming device provided by the invention adopts a concave body type forming mode, and can obtain a cuboid-shaped optical glass strip under the pressure of three sides (a bottom die, a side die and a plug) of a concave body; the side mold is provided with a heating device, the temperature difference between the side surface of the glass and the middle inner part of the glass is controlled, so that the two sides of the glass and the middle glass liquid have similar moving speeds, the heat dissipation consistency is achieved, and the phenomenon that the temperature difference of the glass is too large to generate stripes is avoided; the cooling pipes are arranged in the base and the rear end of the bottom die, so that the incoming glass liquid can be quickly cooled, and the stripes are prevented from being deepened due to uneven heat dissipation of glass; the laser thickness tester is arranged above the forming device, so that the change of the glass thickness in the forming process can be monitored, the effect of ensuring the consistency of the glass thickness is achieved, and the integral quality of the formed optical glass is effectively improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an optical glass ribbon forming apparatus according to the present invention;
FIG. 2 is a top view of an optical glass ribbon forming apparatus provided by the present invention;
FIG. 3 is a cross-sectional view of a bottom mold in the optical glass ribbon forming apparatus provided by the present invention;
FIG. 4 is a view showing the structure of a stopper in the optical glass strip forming apparatus according to the present invention;
FIG. 5 is a structural view of a heating apparatus in the optical glass ribbon molding apparatus according to the present invention.
Description of the reference numerals
1-bottom die 2-base
3-side mould 4-plug
5-laser thickness gauge 6-discharge pipe
7-liquid glass strand 8-softened glass strand
9-solid glass strand 10-glass strand
11-cooling tube 12-rectangular heater.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "rear", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally used to place products of the present invention, or orientations or positional relationships routinely understood by those skilled in the art, and are used merely for convenience of describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," "provided," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the present invention, unless otherwise specified, directional words such as "front end", "rear end", and the like included in a term merely represent the orientation of the term in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the term.
As shown in fig. 1-5: the invention provides an optical glass strip forming device which comprises a base 2, a bottom die 1 fixed on the base 2, side dies 3 and plugs 4 detachably fixed on two sides of the bottom die 1 respectively, wherein the two side dies 3 are arranged in parallel, so that a rectangular groove structure is formed between the two side dies 3, and one end of the rectangular groove structure is provided with the plug 4 detachably fixed on the bottom die 1; a heating device is arranged in each side die 3; and cooling pipes 11 are arranged in the base 2, the bottom die 1 and the plug 4. The front end of the optical glass strip forming device mainly plays a role in the process of converting high-temperature glass liquid from liquid state to solid state, and as can be seen from fig. 2, a glass strip 10 is respectively a liquid glass strip 7, a softened glass strip 8 and a solid glass strip 9 from left to right (namely from the front end to the rear end), and the device can ensure that the high-temperature glass liquid can be rapidly, uniformly and gradiently cooled in the forming process, so that the glass strip is formed; the forming device provided by the invention adopts a concave body type forming mode, and can obtain a cuboid-shaped optical glass strip under the pressure of three sides (a bottom die, a side die and a plug) of a concave body; the side mold is provided with a heating device, the temperature difference between the side surface of the glass and the middle inner part of the glass is controlled, so that the two sides of the glass and the middle glass liquid have similar moving speeds, the heat dissipation consistency is achieved, and the phenomenon that the temperature difference of the glass is too large to generate stripes is avoided; the cooling pipes are arranged in the base and the rear end of the bottom die, so that the incoming glass liquid can be quickly cooled, and the stripes are prevented from being deepened due to uneven heat dissipation of glass; the laser thickness tester is arranged above the forming device, so that the change of the glass thickness in the forming process can be monitored, the effect of ensuring the consistency of the glass thickness is achieved, and the integral quality of the formed optical glass is effectively improved.
In a preferred embodiment of the present invention, in order to keep the cooling rate of the upper surface and the lower surface of each part (liquid glass strand 7, softened glass strand 8, and solid glass strand 9) of glass strand 10 uniform, cooling gas is introduced into cooling pipe 11;
the cooling gas is compressed air or inert gas.
In a preferred embodiment of the present invention, in order to control the temperature difference between the two sides of the glass strip 10 and the temperature of the middle inner part, and ensure that the movement speeds of the two sides and the inner part of the glass strip 10 in the cavity are consistent, and avoid the occurrence of stripes, the heating device comprises a rectangular heater 12;
the length of the rectangular heater 12 is 450-470mm, the width is 18-22mm, and the height is 18-22 mm;
wherein, the cold end of the rectangular heater 12 is 250-270mm, and the hot end of the rectangular heater is 180-200 mm.
In a preferred embodiment of the present invention, in order to facilitate detecting the temperature of the rectangular heater 12 and to facilitate timely temperature control, the heating apparatus further includes a temperature thermocouple fixed on the side mold 3 for monitoring the heating temperature of the rectangular heater 12.
In a preferred embodiment of the present invention, the cooling pipe 11 located inside the bottom mold 1 has a bellows structure in order to increase the amount of heat radiation and the heat radiation area of the glass strand 10 and to reduce the amount of striae.
In a preferred embodiment of the present invention, for convenience of feeding, two ends of the bottom mold 1 from left to right are a bottom mold front end and a bottom mold rear end, respectively, and the plug 4 is close to the bottom mold front end;
a discharging pipe 6 is arranged above the rectangular groove structure and close to the front end of the bottom die, so that high-temperature glass liquid flowing out of the discharging pipe 6 can flow into the rectangular groove.
In a preferred embodiment of the present invention, the cooling pipe 11 inside the bottom mold 1 is located near the rear end of the bottom mold in order to further improve the quality of the glass strand produced.
In a preferred embodiment of the present invention, the heating means is located near the front end of the bottom mold in order to further improve the quality of the glass strand produced.
In a preferred embodiment of the present invention, in order to monitor the change of the glass thickness during the forming process, and achieve the effect of ensuring the consistent glass thickness, so as to achieve the purpose of effectively improving the overall quality of the formed optical glass, the optical glass strip forming apparatus further includes a laser thickness gauge 5 disposed above the bottom mold 1.
In a preferred embodiment of the present invention, the laser thickness gauge 5 is located 1.5-2m above the bottom die 1.
In the actual operation process, the bottom die 1, the base 2, the plug 4 and the side die 3 are installed together to form a rectangular groove structure, the rectangular heater 12 is installed in a reserved hole of the side die 3, high-temperature glass liquid flows out of the discharge pipe 6 and is slowly gathered and flows into the rectangular groove structure, the thickness of the glass liquid is slowly increased, and the rectangular groove structure is filled with the glass liquid. The shape of the glass is controlled by monitoring the temperature of the forming furnace and the temperature of the connecting part, and the current of the rectangular heater is adjusted by measuring the temperature of thermoelectricity in the hole of the side mold 3, so that the temperature difference between the temperatures of two sides and the temperature of the middle inner part of the strip glass is controlled, the movement speed of the two sides and the inner part of the glass in the cavity is kept consistent, and the occurrence of stripes is avoided; the temperature reduction speed of the upper surface and the lower surface of the glass strip 10 is controlled to be consistent by monitoring the gas cooling of the bottom die 1, the base 2 and the plug 4 and controlling the air quantity of a gas cooling channel; the glass ribbon 10 is drawn into the lehr by gravity-induced squeeze flow and the pulling force of the pulling furnace.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The optical glass strip forming device is characterized by comprising a base (2), a bottom die (1) fixed on the base (2), and side dies (3) and plugs (4) which are respectively detachably fixed on two sides of the bottom die (1), wherein the two side dies (3) are arranged in parallel, so that a rectangular groove structure is formed between the two side dies (3), and one end of the rectangular groove structure is provided with the plug (4) detachably fixed on the bottom die (1);
a heating device is arranged in each side die (3);
the base (2), the bottom die (1) and the plug (4) are internally provided with cooling pipes (11).
2. The optical glass ribbon forming apparatus according to claim 1, wherein a cooling gas is introduced into the cooling pipe (11); the cooling gas is compressed air or inert gas.
3. An optical glass strand forming device according to claim 1, characterized in that the heating device comprises a rectangular heater (12); the length of the rectangular heater (12) is 450-470mm, the width is 18-22mm, and the height is 18-22 mm; wherein the cold end of the rectangular heater (12) is 270mm, and the hot end of the rectangular heater is 200 mm.
4. The optical glass ribbon forming apparatus according to claim 3, wherein the heating apparatus further comprises a thermo-thermocouple fixed to the side mold (3) for monitoring a heating temperature of the rectangular heater (12).
5. Optical glass strand forming device according to claim 1, characterized in that the cooling pipe (11) inside the counter-die (1) is of a bellows construction.
6. The optical glass strip forming device according to claim 1, wherein the two ends of the bottom mold (1) from left to right are a bottom mold front end and a bottom mold rear end respectively, and the plug (4) is close to the bottom mold front end; a discharging pipe (6) is arranged above the rectangular groove structure and close to the front end of the bottom die, so that high-temperature glass liquid flowing out of the discharging pipe (6) can flow into the rectangular groove.
7. The device for forming optical glass strands according to claim 6, characterized in that the cooling tube (11) inside the bottom mold (1) is located near the rear end of the bottom mold.
8. Optical glass strand forming device according to claim 6, characterized in that the cooling tube (11) inside the bottom mold (1) is close to the bottom mold rear end.
9. The optical glass strand forming apparatus according to claim 1, further comprising a laser thickness gauge (5) disposed above the bottom mold (1).
10. The optical glass strand forming apparatus according to claim 1, further comprising a laser thickness gauge (5) disposed above the bottom mold (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317089.7A CN111825308A (en) | 2019-04-19 | 2019-04-19 | Optical glass strip forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317089.7A CN111825308A (en) | 2019-04-19 | 2019-04-19 | Optical glass strip forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111825308A true CN111825308A (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317089.7A Pending CN111825308A (en) | 2019-04-19 | 2019-04-19 | Optical glass strip forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111825308A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2831158A1 (en) * | 2001-10-24 | 2003-04-25 | Corning Inc | Device for fabrication of molded glass components made up of a molten glass feed system and two mold parts that can be displaced to form a mold cavity of variable volume |
| CN105271644A (en) * | 2015-09-29 | 2016-01-27 | 湖北新华光信息材料有限公司 | Glass strip thickness control system and method thereof |
| CN105837009A (en) * | 2016-03-21 | 2016-08-10 | 中国建筑材料科学研究总院 | Glass forming mold and forming device, and glass forming method |
| CN206858421U (en) * | 2017-05-23 | 2018-01-09 | 成都光明光电股份有限公司 | Glass bar mould |
| CN108483871A (en) * | 2018-03-09 | 2018-09-04 | 湖北新华光信息材料有限公司 | A kind of optical glass forming mold device |
-
2019
- 2019-04-19 CN CN201910317089.7A patent/CN111825308A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2831158A1 (en) * | 2001-10-24 | 2003-04-25 | Corning Inc | Device for fabrication of molded glass components made up of a molten glass feed system and two mold parts that can be displaced to form a mold cavity of variable volume |
| CN105271644A (en) * | 2015-09-29 | 2016-01-27 | 湖北新华光信息材料有限公司 | Glass strip thickness control system and method thereof |
| CN105837009A (en) * | 2016-03-21 | 2016-08-10 | 中国建筑材料科学研究总院 | Glass forming mold and forming device, and glass forming method |
| CN206858421U (en) * | 2017-05-23 | 2018-01-09 | 成都光明光电股份有限公司 | Glass bar mould |
| CN108483871A (en) * | 2018-03-09 | 2018-09-04 | 湖北新华光信息材料有限公司 | A kind of optical glass forming mold device |
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Application publication date: 20201027 |