CN203833793U - Optical glass molding device - Google Patents
Optical glass molding device Download PDFInfo
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- CN203833793U CN203833793U CN201420135181.4U CN201420135181U CN203833793U CN 203833793 U CN203833793 U CN 203833793U CN 201420135181 U CN201420135181 U CN 201420135181U CN 203833793 U CN203833793 U CN 203833793U
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- backform
- glass
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- optical glass
- temperature thermocouple
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Abstract
The utility model relates to an optical glass molding device and belongs to the technical field of molten optical glass production. The optical glass molding device mainly solves the problems of poor quality of strip molding, surface streak occurrence proneness and crystallization of existing large-diameter optical glass. The optical glass molding device is characterized by comprising a bottom mold, a top mold, a heating device, a bottom mold cooling channel, a top mold cooling channel, a first temperature thermocouple and a second temperature thermocouple; the top mold is a U-shaped groove, the bottom mold is a flat plate, and the top mold and the bottom mold are mounted together to form a glass molding cavity; the top mold cooling channel and the second temperature thermocouple are arranged on the upper inner wall of the top mold; the bottom mold cooling channel is arranged in the plate of the bottom mold; the heating device and the first temperature thermocouple are arranged in a U-shaped groove below the top mold. The optical glass molding device solves the problems of poor strip molding, inconsistent thickness, surface streak occurrence proneness and crystallization of optical glass and has significant effects on lanthanide optical glass with low viscosity and crystallization proneness.
Description
Technical field
The utility model belongs to opticglass and founds field shaping technique.Be specifically related to a kind of shaped device of optical glass strip material, particularly relate to and produce the shaped device that lanthanide optical glass billot molding thickness surpasses 40mm.
Background technology
At opticglass, found in forming field, billot moulding process is a kind of main moulding process.Opticglass is under molten state, and through the moulding of mould nature or clap molded and be cut into the optical glass strip material of certain size, the shaped device of glass billot is generally comprised of bed die, side form and plug.Because glass metal has the characteristic of the rapid solidification along with the reduction of temperature, the optical glass strip material of therefore producing in this way has larger fillet (being called for short R angle), as shown in Figure 5.R angle be opticglass in moulding process, under the surface tension effects of viscous glass liquid, at moulding edge, produce.While especially producing thickness over 40mm billot, because molding time is long, the R angle of glass is larger, product cuts in process at next process, and the glass of R angle part does not just meet service requirements, and material is useless very large, and the expense material of taking a lot of work in the course of processing, tooling cost is high.During opticglass is in early days produced, once attempt to rely on the molded technology of bat to solve this difficult problem, and at the plastic stage of moulding process, relied on external force to continue glass surface to clap pressure, to obtain the good opticglass of Forming Quality.This molding mode has been obtained good effect in the opticglass of the large viscosity of tradition.
In recent years, along with the development of lanthanide optical glass, the turnout of lanthanide optical glass also progressively increases, and the billot specification of producing also increases gradually aspect thickness, width.Because lanthanide glass has, viscosity is little, the characteristic of easy crystallization, and in producing the process of large specification lanthanide optical glass, because glass heat radiation is slow, surface temperature is high, and glass billot easily produces striated surface.Secondly, be subject to the impact of impurity in production environment, also easily at glass surface, occur crystallization, affect quality product.Therefore in the production process of lanthanide glass, this outer power is clapped the molding mode of pressing and also could not in the moulding process of lanthanide optical glass, be promoted.
Patent documentation CN 101186428A provides a kind of optical glass forming device, as shown in Figure 1, this device is comprised of bed die, side form and plug, and on side form, be provided with flame heating device, can be by the type of heating on glass metal surface is slowed down to solidifying of glass metal, thus reach the object of producing large specification glass billot.This mode of production can solve the large specification billot of producing ordinary optical glass preferably, R angle to billot also has some improvement, but when producing lanthanide optical glass billot, because lanthanide glass has, viscosity is little, the characteristic of easy crystallization, so when flame heats, glass surface receives that moulding striped easily appears in the heating of flame, and is subject to the induction of combustion impurities, and crystallization easily appears in glass surface.Obviously, this shaped device is not suitable for the large specification lanthanide glass billot of production.
Patent documentation 200610022703.X provides a kind of shaped device of fluorphosphate glass, and as shown in Figure 2, this installs described mould and consists of bed die, side form and block, and is provided with cooling cover plate on mould, is provided with ventilating pit on cooling cover plate.This invention is ventilated cooling to glass surface, solved the facial moulding striped that fluorphosphate glass causes because of glass surface volatilization in moulding process.But the Forming Quality of glass is not improved, and in process of cooling, increased the surface viscosity of glass metal, make the moulding R angle of glass larger.
The heating of above two patents by die surface or cooling, improved respectively R angle and the facial stripes problem of optical glass strip material in moulding process, but be all unilateral improvement, every invention can only solve in facial striped and two, R angle moulding problem, and the total quality after glass ware forming does not improve.
Summary of the invention
It is little that the purpose of this utility model is to design a kind of energy stably manufactured R angle, the shaped device that Forming Quality is high, and can effectively solve the easy crystallization of a lanthanide optical glass billot ground difficult problem.
Technical solution of the present utility model is: a kind of shaped device of opticglass, comprise bed die, and it is characterized in that: also comprise backform, heating unit, bed die cooling channel, backform cooling channel, the first temperature thermocouple and the second temperature thermocouple; Described backform is U-shaped groove, and bed die is plane bottom plate, and backform and bed die are installed together and form glass ware forming cavity; Described backform cooling channel, the second temperature thermocouple are arranged in the upper wall of backform; Described bed die cooling channel is arranged in the plate of bed die; Described heating unit, the first temperature thermocouple are arranged in the U-shaped groove of backform below.
Described in the technical solution of the utility model optical glass forming device, the groove width of U-shaped groove is 100～200mm, and groove is high is 40～80mm.
Described in the technical solution of the utility model optical glass forming device, heating unit is tubular heater.
Tubular heater described in the technical solution of the utility model optical glass forming device is that diameter is the stainless steel tubulose well heater that Ф 8～Ф 12mm, length are 80～150mm.
The front end of backform described in the technical solution of the utility model optical glass forming device is cut out the long inclined-plane of 50～100mm.
The diameter of backform cooling channel described in the technical solution of the utility model optical glass forming device is that Ф 8～Ф 12mm, length are 100～200mm, it is symmetrical that the draw direction of glass billot is pressed in backform cooling channel, and the spacing of backform cooling channel, both sides is 1/3～2/3 of glass billot width.
Described in the technical solution of the utility model optical glass forming device, the material of bed die, backform is xantal or die steel material.
The utility model comprises following processing step for optical glass forming production technique:
(1), the U-shaped groove backform of backform cooling channel and the second temperature thermocouple will be provided with in wall, be installed together and form glass ware forming cavity with the bed die that is provided with cooling channel in plate, and heating unit, the first temperature thermocouple be installed below backform, finally make bed die become skewed, and entrance is placed in Lou under material pipe port;
, to heating unit energising, glass ware forming cavity ingress temperature is reached in-150～+ 50 ℃ of temperature ranges of opticglass transition temperature;
(3), high temp glass liquid is flowed out from leaking material pipe, the thickness of glass metal progressively increases, until glass metal fills up cavity body of mould in the region of cooling channel, walk out after cavity body of mould to glass billot, beginning passes into heat-eliminating medium to cooling channel, controls the second temperature thermocouple place temperature is reached in the temperature range of-150～+ 50 ℃ of opticglass transition temperature;
, glass billot under the draw of self gravitation and Xu Lenglu guipure, to walk out cavity body of mould with the speed of glass load coupling, enter Xu Lenglu.
This device is in moulding process, and glass metal, from leaking material pipe and flowing out, enters the cavity body of mould that tilts to install, and in cavity body of mould thickening gradually, finally in the region of backform refrigerating unit, fill up whole cavity body of mould.Plasticity-due to high temp glass, glass metal forms cubic glass billot under the pressure of cavity body of mould, and by after backform refrigerating unit cooling, the surface of glass billot is by solidifying and setting rapidly, thereby obtain the very little optical glass strip material in R angle, the Forming Quality of glass is largely increased.Secondly, because glass metal surface is by rapid cooling curing, also avoided the generation of glass surface striped and crystallization.
Superiority of the present utility model:
1. shaped device adopts cavity cable-stayed type molding mode, under the pressure of cavity, can obtain cubic optical glass strip material, has greatly improved the Forming Quality of glass billot;
2. the backform of shaped device is provided with refrigerating unit, can make glass metal surface cooling curing fast, has avoided the generation of glass metal striated surface and crystallization, has improved the quality of glass billot;
3. the backform of shaped device is provided with heating unit that can be temperature automatically controlled, and the mold temperature precise control of mould is stable, has improved the stability that glass billot draws, and has improved the good article rate of glass condiment;
4. shaped device adopts cavity forming, and the thickness of glass billot has stability and the consistence of height.
The utility model has solved that optical glass strip material moulding is poor, and variable thickness causes, and is prone to the problem of striated surface and crystallization, especially to low viscosity, easily the lanthanide optical glass of crystallization has unusual effect.
Accompanying drawing explanation
Fig. 1 is the forming end plug structural representation of original the first shaped device.
Fig. 2 is the structural representation of original the second shaped device.
Fig. 3 is the structural representation of the utility model optical glass forming device.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the schematic cross-section of original glass billot product.
Fig. 6 is the schematic cross-section of glass billot product of the present utility model.
Fig. 7 is use view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Fig. 3, Fig. 4, Fig. 7.The shaped device of the utility model opticglass comprises bed die 2, backform 3, heating unit 4, bed die cooling channel 5, backform cooling channel 6, the first temperature thermocouple 7 and the second temperature thermocouple 8.Backform 3 is that 20～40mm is thick, the U-shaped groove that 300～600mm is long, and bed die 2 is that 30～80mm is thick, the long plane bottom plate of 500～800mm, backform 3 is installed together and forms glass ware forming cavity with bed die 2.The groove width of U-shaped groove (cavity body of mould width) is 100～200mm, and groove is high is 40～80mm, the optical glass strip material of various bores that can production respective chamber size.The front end of backform 3 is cut out the long inclined-plane of 50～100mm, is convenient to leak the installation of material pipe and leaks material control.The material of bed die 2, backform 3 is xantal or die steel material.Backform cooling channel 6, the second temperature thermocouple 8 are arranged in the upper wall of backform 3, can reach the object of controlling backform temperature by adjusting the flow of heat-eliminating medium.The diameter of backform cooling channel 6 is that Ф 8～Ф 12mm, length are 100～200mm, and it is symmetrical that the draw direction of glass billot is pressed in backform cooling channel 6, and the spacing of backform cooling channel, both sides 6 is 1/3～2/3 of glass billot width.Bed die cooling channel 5 is arranged in the plate of bed die 2.Heating unit 4, the first temperature thermocouple 7 are arranged in the U-shaped groove of backform 3 belows, can realize temperature automatically controlled.Heating unit 4 is tubular heater, each of left and right, and symmetrical.Tubular heater is that diameter is the stainless steel tubulose well heater that Ф 8～Ф 12mm, length are 80～150mm, uses automatic instrument and temperature thermocouple to realize temperature automatically controlled to mould molding region.Shaped device needs to be arranged in the mould vehicle of inclination in use, and the angle of inclination of mould is arranged on 5 °～20 °.
In the moulding process of glass billot 9, to tubular heater energising, improve the temperature of mold top holder 3 front ends, and by automatic instrument, control the temperature of temperature thermocouple 7, reduce the cold line that glass metal produces in piling up thickening journey.In addition, from cooling channel, 6 to pass into the heat-eliminating mediums such as cooling air or water coolant cooling through row to mold top holder 3, makes glass metal surface cooling curing rapidly, and the flow by adjusting heat-eliminating medium by temperature thermocouple 8 in constant temp.By controlling the temperature of temperature thermocouple 7 and temperature thermocouple 8, make the Forming Quality of glass billot 9 in best state.
Lower mask body is introduced the using method of this shaped device in moulding process, as shown in Figure 7, producing certain Tg temperature, it is 600 ℃, 100mm is wide, during the thick lanthanide glass billot of 40mm, at glass metal, from leaking material, manage 1 outflow, tubular heater 4 energising heating, the temperature of the first temperature thermocouple 7 is reached in the temperature range of opticglass Tg-150 ℃～Tg+50 ℃, glass metal is from leaking 1 outflow of material pipe, the thickness of glass metal progressively increases, until glass metal fills up cavity body of mould in the region of refrigerating unit 6, Deng glass billot 9, walk out after cavity body of mould, refrigerating unit 6 passes into heat-eliminating medium and carries out cooling, the flow of controlling heat-eliminating medium reaches in the temperature range of-150～+ 50 ℃ of opticglass transition temperature Tg the temperature of the second temperature thermocouple 8.The temperature of adjusting the first temperature thermocouple 7 is controlled the cold line of sidepiece and the parallelism of glass billot 9, the temperature of adjusting the second temperature thermocouple 8 is controlled the cold line of face and the parallelism of glass billot 9, adjust the pulling speed of glass billot 9 and control accumulation degree and the filling position of glass metal in mould, finally make the Forming Quality of glass billot 9 in optimum regime, thereby obtain the very little optical glass strip material in R1 angle, the Forming Quality of glass is largely increased, as shown in Figure 6.
In a word, the utility model has good suitability for heavy caliber glass billot, by controlling the temperature of the first temperature thermocouple 7 and the second temperature thermocouple 8, can obtain the optical glass strip material of the various bores that Forming Quality is high, and avoid lanthanide optical glass billot in moulding process, to be prone to the problem of striated surface and crystallization.
Claims (7)
1. the shaped device of an opticglass, comprise bed die (2), it is characterized in that: also comprise backform (3), heating unit (4), bed die cooling channel (5), backform cooling channel (6), the first temperature thermocouple (7) and the second temperature thermocouple (8); Described backform (3) is U-shaped groove, and bed die (2) is plane bottom plate, and backform (3) is installed together and forms glass ware forming cavity with bed die (2); Described backform cooling channel (6), the second temperature thermocouple (8) are arranged in the upper wall of backform (3); Described bed die cooling channel (5) is arranged in the plate of bed die (2); Described heating unit (4), the first temperature thermocouple (7) are arranged in the U-shaped groove of backform (3) below.
2. the shaped device of a kind of opticglass according to claim 1, is characterized in that: the groove width of described U-shaped groove is 100～200mm, and groove is high is 40～80mm.
3. the shaped device of a kind of opticglass according to claim 1 and 2, is characterized in that: described heating unit (4) is tubular heater, each of left and right, and symmetrical.
4. the shaped device of a kind of opticglass according to claim 3, is characterized in that: described tubular heater is that diameter is the stainless steel tubulose well heater that Ф 8～Ф 12mm, length are 80～150mm.
5. the shaped device of a kind of opticglass according to claim 1 and 2, is characterized in that: the front end of described backform (3) is cut out the long inclined-plane of 50～100mm.
6. the shaped device of a kind of opticglass according to claim 1 and 2, it is characterized in that: the diameter of described backform cooling channel (6) is that Ф 8～Ф 12mm, length are 100～200mm, it is symmetrical that the draw direction of glass billot is pressed in backform cooling channel (6), and the spacing of backform cooling channel, both sides (6) is 1/3～2/3 of glass billot width.
7. the shaped device of a kind of opticglass according to claim 1 and 2, is characterized in that: the material of described bed die (2), backform (3) is xantal or die steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135181.4U CN203833793U (en) | 2014-03-25 | 2014-03-25 | Optical glass molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135181.4U CN203833793U (en) | 2014-03-25 | 2014-03-25 | Optical glass molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203833793U true CN203833793U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135181.4U Expired - Fee Related CN203833793U (en) | 2014-03-25 | 2014-03-25 | Optical glass molding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203833793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922565A (en) * | 2014-03-25 | 2014-07-16 | 湖北新华光信息材料有限公司 | Forming device of optical glass and its production technology |
| CN105198192A (en) * | 2015-10-14 | 2015-12-30 | 湖北新华光信息材料有限公司 | Cover plate device for optical glass formation |
-
2014
- 2014-03-25 CN CN201420135181.4U patent/CN203833793U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922565A (en) * | 2014-03-25 | 2014-07-16 | 湖北新华光信息材料有限公司 | Forming device of optical glass and its production technology |
| CN105198192A (en) * | 2015-10-14 | 2015-12-30 | 湖北新华光信息材料有限公司 | Cover plate device for optical glass formation |
| CN105198192B (en) * | 2015-10-14 | 2017-08-29 | 湖北新华光信息材料有限公司 | A kind of optical glass forming cover board arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20170325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |