CN214654436U - Overflow-method glass substrate forming thickness control device - Google Patents
Overflow-method glass substrate forming thickness control device Download PDFInfo
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- CN214654436U CN214654436U CN202120270109.2U CN202120270109U CN214654436U CN 214654436 U CN214654436 U CN 214654436U CN 202120270109 U CN202120270109 U CN 202120270109U CN 214654436 U CN214654436 U CN 214654436U
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- soaking box
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Abstract
The utility model provides an equipment of overflow method base plate glass shaping thickness adjustment, but through the U type cooling tuber pipe that sets up soaking box and independent control wind speed in overflow brick point below, and soaking box and U type cooling tuber pipe are connected respectively through screw thread and nut and on the outer wall of furnace body lower extreme both sides, to the vitreous body and then to the inconsistent condition of vitreous body coplanar thickness, through rotatory screw thread and nut, realize the independent control slip of soaking box and U type cooling tuber pipe respectively, and then become more meticulous and divide regional adjustment and vitreous body's distance, realize the rapid cooling of corresponding position, it slows down mobility to improve glass viscosity, play the purpose of thickness homogeneity, the cooling efficiency is low among the prior art has been solved simultaneously, slow in reaction, poor problem, and the process margin of controllability thickness adjustment has been extended.
Description
Technical Field
The utility model relates to a base plate glass makes and equips belongs to the professional equipment category, in particular to overflow method glass substrate shaping thickness control device.
Background
In the overflow downdraw method substrate glass production process, when molten glass flows down from the overflow brick tip and enters a forming area, in order to ensure that the glass plate is rapidly cooled and formed, the glass plate enters a stress strain area with uniform thickness, and a glass plate thickness control device is arranged in the area.
The general control and adjustment mode is to cool the soaking box body by cooling wind. However, with the continuous development of display technology, high definition, thinning and large size are inevitable development trends, which put higher demands on the manufacture of glass substrates, especially on the control of thickness uniformity.
On the other hand, as shown in fig. 1, the adjusting areas at adjacent positions affect each other, the air after heat exchange cannot be discharged quickly, the adjusting effect is affected, and the problems of low efficiency, slow reaction, poor controllability and the like occur in the adjusting process.
SUMMERY OF THE UTILITY MODEL
To the problem that has among the prior art in to glass board course of working uneven thickness, the utility model provides an overflow method glass substrate shaping thickness control device.
The utility model discloses a realize through following technical scheme:
the glass substrate forming thickness control device by the overflow method comprises a soaking box body;
the soaking box bodies are symmetrically arranged at two sides of the lower end in the furnace body, one side of each soaking box body, which is close to the overflow bricks, is a heat absorption inclined plane, and the other side of each soaking box body is provided with a box body pull rod; the included angles of the heat absorption inclined planes symmetrically distributed on the two sides are equal to the included angle of the inclined plane at the lower end of the overflow brick; the soaking box body is slidably supported at the lower end of the furnace body, and a box body pull rod is in threaded connection with a pull rod support arranged on the outer wall of the furnace body; a plurality of mutually independent U-shaped cooling air pipes are arranged in the soaking box body, and an air inlet and an air outlet of each U-shaped cooling air pipe are respectively connected with an air pipe support arranged on the outer wall of the furnace body through air pipe nuts; the air pipe bracket is arranged between the pull rod bracket and the furnace body.
Furthermore, the U-shaped cooling air pipe penetrates through the soaking box body in a sliding mode.
Furthermore, the bent part of the U-shaped cooling air pipe is parallel to the heat absorption inclined plane of the soaking box body.
Further, the soaking box body is made of a high thermal conductivity material with the thermal conductivity more than 55W/mk.
Further, the soaking box body is mirror-finished.
Further, the adjacent distance between the U-shaped cooling air pipes is 20-25 mm.
Compared with the prior art, the utility model discloses following profitable technological effect has:
a glass substrate forming thickness control device by an overflow method comprises soaking boxes, wherein the soaking boxes are symmetrically arranged on two sides of the lower end in a furnace body and are slidably supported by the lower end of the furnace body, and the included angles of symmetrically distributed heat absorption inclined planes are equal to the included angle of the inclined plane at the lower end of an overflow brick; so that the glass liquid can be cooled down and the cooling time can be prolonged when the glass liquid flows downwards at the two sides of the overflow brick. One side of the soaking box body, which is close to the overflow bricks, is a heat absorption inclined plane, and the other side of the soaking box body is connected with a box body pull rod which is connected with a pull rod bracket through threads; inside there are a plurality of mutually independent U type cooling tuber pipes of soaking box, and the air intake and the air outlet of U type cooling tuber pipe pass through the tuber pipe nut in the outside of furnace body and tuber pipe support and are connected, through rotating screw thread and tuber pipe nut, realize adjusting the soaking box alone and the distance of U type cooling tuber pipe and the glass body according to vitreous body thickness distribution feedback to can effectively solve the problem to the different temperature adjustment of vitreous body coplanar, can improve adjustment efficiency simultaneously and improve the product quality.
Furthermore, the U-shaped cooling air pipes slide to penetrate out of the soaking box body, and the distance between each U-shaped cooling air pipe and the glass body is convenient to adjust.
Furthermore, the bent part of the U-shaped cooling air pipe is parallel to the heat absorption inclined plane of the soaking box body, so that the temperature consistency of the soaking box body and the inclined plane at the side close to the glass body is ensured.
Furthermore, the soaking box body is a mirror surface tool and is made of a high-thermal-conductivity material with the thermal conductivity more than 55W/mk, so that the soaking box body has high thermal radiation capacity, and the cooling efficiency is improved.
Further, the adjacent distance of a plurality of U type cooling air pipes is 20 ~ 25mm, reduces the temperature influence between the U type cooling air pipe for temperature regulation to the glass body is more accurate.
Drawings
FIG. 1 is a schematic structural view of a conventional thickness control device for overflow forming of a glass substrate;
FIG. 2 is a cross-sectional view of a thickness control device for overflow forming of a glass substrate according to an embodiment of the present invention;
FIG. 3 is a diagram of a cooling module according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of the embodiment of the present invention;
fig. 5 is a schematic view of a first embodiment of the present invention;
fig. 6 is a schematic view of a second embodiment of the present invention;
fig. 7 is a schematic view of a third embodiment of the present invention;
in the figure: a glass body 1; an overflow brick 11; a furnace body 15; a soaking tank 23; an air inlet 20; a U-shaped cooling air duct 22; an air outlet 202; an air duct bracket 25; a duct nut 26; a connecting box body pull rod 261; a tie rod bracket 24; glass thickness test centerline 31; the actual thickness fluctuation curve 41; a first low point 311; a second low point 313; high points 312; a first U-shaped cooling air duct 611; a second U-shaped cooling duct 613; a high point U-shaped cooling air duct 612.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model relates to an overflow method glass substrate shaping thickness control device, its aim at provide this device for the problem that the cooling effect of the overflow brick downside cooling area that exists is poor among the solution prior art, the reaction is slow, can't realize the temperature control that becomes more meticulous. As shown in FIG. 2, when the molten glass flows down from both sides of the overflow brick 11, the glass is in a viscous state due to a high temperature, and the glass is combined and bonded at the brick tip to form the glass body 1, at this time, the glass body 1 is in a viscoelastic state due to a temperature decrease, the glass body 1 continues to flow downwards under the action of gravity, and the glass body 1 is continuously shrunk transversely along with the temperature decrease. In general, the non-flow direction of the glass body 1 causes the non-uniformity of the thickness distribution of the plate due to the presence of the transverse temperature unevenness or the unstable supply of the raw material.
In order to solve the phenomenon of uneven plate thickness, the thickness fine-tuning devices are symmetrically arranged on two sides of the lower portion of the overflow brick tip and comprise a soaking box body 23 with high heat conduction and high radiation, one end of the soaking box body 23 is a heat absorption inclined plane with a certain angle and is connected with the furnace body 15 through a steel structure sliding structure, the included angles of the inclined planes which are symmetrically distributed are equal to the included angle of the inclined plane at the lower end of the overflow brick 11, and the heat absorption inclined plane is parallel to the overflow inclined plane.
As shown in figure 3, the bent parts of the U-shaped air pipes 22 in the cold area are parallel to the heat absorption inclined planes of the soaking box body 23, and the U-shaped cooling air pipes 22 are uniformly distributed in the length direction of the soaking box body 23 at intervals of 20-25 mm. As shown in fig. 2, the U-shaped cold air pipes 22 are symmetrically installed inside the soaking boxes 23, respectively.
When the non-flow thickness of glass board is undulant, according to actual survey board thickness distribution data, the cooling air in the U type cooling tuber pipe 22 that the adjustment corresponds, the air-out after the heat exchange flows out behind U type cooling tuber pipe 22 internal circulation, the kink of U type cold zone tuber pipe 22 is parallel to each other with the heat absorption inclined plane of soaking box 23, the heat of the high temperature viscous vitreous body 1 of fuse state this moment rapidly passes through the heat absorption inclined plane of soaking box 23, form heat exchange with the cooling air, the cooling air passes through air outlet 202 discharge furnace body 15 afterwards, take the heat out, can be quick cool down glass, thereby the control board is thick at certain extent. The soaking box body 23 is made of high-radiation material, has the thermal conductivity of more than 55W/mk and is opposite to the inclined plane of the overflow brick 11, so that the aim of cooling the viscous glass body 1 with the inclined plane corresponding to the overflow brick 11 is fulfilled. Because the glass temperature is higher and the fluidity is good, the temperature adjustment can be correspondingly performed by slight temperature adjustment, and the thickness change of the glass plate is further influenced.
Meanwhile, according to the non-flow thickness distribution condition of the glass body 1, the cooling air quantity, the flow speed and the like of the U-shaped cold area air pipes 22 at the corresponding positions are adjusted, and the thickness of the glass plate can be accurately controlled due to the relative independence of the U-shaped cold area air pipes 22.
In the actual process adjustment process as shown in fig. 2 and 3, in addition to the adjustment of the cooling air volume and the air speed, a tie rod support 24 is arranged outside the furnace body, and the soaking box body 23 is driven to move integrally by adjusting the air pipe nut 26, so that the change of the distance between the heat absorption inclined plane of the soaking box body 23 and the inclined plane of the overflow brick 11, that is, the change of S2 shown in fig. 4 is realized.
The distance S1 between the U-shaped cold area air pipe 22 and the inner surface of the box body can be changed by arranging the air pipe bracket 25 outside the furnace body 15 and adjusting the air pipe nut 26.
When the utility model is used, if the thickness of the glass body exceeds the preset value, the distance between the soaking box body and the glass body is increased; if the thickness of the glass body is lower than the preset value, the distance between the soaking box body and the glass body is reduced; if the thickness of the glass body fluctuates up and down at a preset value, independently adjusting the cooling air quantity in the U-shaped cooling air pipe at the floating position; the technical scheme is simple to operate, and meanwhile, the temperature change of the corresponding adjustment required by the change of the thickness of the glass body can be met in a targeted manner.
Further, if the thickness of the glass body fluctuates up and down at a preset value, the cooling air quantity in the U-shaped cooling air pipe is reduced at the corresponding position of which the thickness exceeds the preset value, and meanwhile, the distance between the U-shaped cooling air pipe at the corresponding position and the heat absorption inclined plane of the soaking box body is increased through an air pipe nut; and the cooling air quantity in the U-shaped cooling air pipe is increased at the corresponding position with the thickness lower than the preset value, and the distance between the U-shaped cooling air pipe at the corresponding position and the heat absorption inclined plane of the soaking box body is reduced through an air pipe nut. According to the data of the non-flow direction thickness of the actual measurement vitreous body, and then the pertinence position to soaking box and U type cooling air pipe is adjusted, when vitreous body thickness is floated from top to bottom at the default, still can adjust the inside independent U type cooling air pipe of soaking box and the cooling amount of wind alone, convenient to use is nimble, through the inside U type cooling air pipe of independent regulation soaking box, the realization is to the adjustment of the different thickness in vitreous body coplanar, can reach the purpose that the accurate control vitreous body is thick.
When the glass substrate forming thickness control adopting the overflow method is used, the thickness central line preset for the glass body according to the comparison is adopted, the cooling intensity is improved aiming at the area which is lower than the thickness central line and appears on the surface of the actual glass body, the cooling intensity is reduced aiming at the area which is higher than the thickness central line and appears on the surface of the actual glass body, and the following three specific embodiments are provided;
the first implementation mode comprises the following steps: in practical application, as shown in fig. 5, when the thickness curve 31 is entirely above the center line 41, the position 51 of the box body is changed by moving the box body 21 as a whole, so as to increase the distance S1 between the box body and the glass body 1, reduce the overall cooling effect, and achieve the purpose of rapidly reducing the thickness of the entire glass plate.
The second embodiment: on the contrary, as shown in fig. 6, when the thickness curve 31 is below the central line 41 as a whole, the box position 51 is changed by moving the box as a whole, the distance S1 between the box and the glass body 1 is reduced, the whole cooling effect is enhanced, and the purpose of rapidly increasing the thickness of the whole glass plate is achieved.
The third embodiment is as follows: when the thickness curve of the thickness curve is shown in fig. 7, the thickness of the first low point 311 and the second low point 313 is below the center line, and the thickness of the middle high point 312 is above the center line, if the adjustment is performed by adjusting the cooling air volume, the cooling air volume corresponding to the first low point 311 and the second low point 313 needs to be increased, and the air volume corresponding to the high point 312 needs to be decreased, so that the adjustment may not achieve the desired effect. The utility model discloses well adoption removes corresponding first U type cooling tuber pipe 611 and second U type cooling tuber pipe 613, reduces interval S2 on the relative soaking box heat absorption inclined plane, and reinforcing cooling effect removes high point U type cooling tuber pipe 612 simultaneously, and interval S2 on the relative soaking box heat absorption inclined plane of increase reduces cooling effect, can play the purpose of the thickness adjustment that becomes more meticulous through this mode.
Claims (6)
1. The overflow glass substrate forming thickness control device is characterized by comprising a soaking box body (23);
the soaking box bodies (23) are symmetrically arranged on two sides of the lower end in the furnace body (15), one side of each soaking box body (23) close to the overflow bricks (11) is a heat absorption inclined plane, and the other side of each soaking box body is provided with a box body pull rod (261); the included angles of the heat absorption inclined planes symmetrically distributed on the two sides are equal to the included angle of the inclined plane at the lower end of the overflow brick (11); the soaking box body (23) is supported at the lower end of the furnace body (15) in a sliding way, and a box body pull rod (261) is in threaded connection with a pull rod bracket (24) arranged on the outer wall of the furnace body (15);
a plurality of mutually independent U-shaped cooling air pipes (22) are arranged in the soaking box body (23), and an air inlet (20) and an air outlet (202) of each U-shaped cooling air pipe (22) are respectively connected with an air pipe support (25) arranged on the outer wall of the furnace body (15) through air pipe nuts; the air pipe bracket (25) is arranged between the pull rod bracket (24) and the furnace body (15).
2. The overflow glass substrate forming thickness control device as claimed in claim 1, wherein the U-shaped cooling air pipe (22) is slidably disposed through the soaking chamber (23).
3. The overflow glass substrate forming thickness control device according to claim 1, wherein the bent portion of the U-shaped cooling air duct (22) is parallel to the heat absorbing slope of the soaking chamber (23).
4. The overflow glass substrate forming thickness control device as claimed in claim 1, wherein the soaking chamber (23) is made of a high thermal conductivity material having a thermal conductivity of more than 55W/mk.
5. The overflow glass substrate forming thickness control device according to claim 1, wherein the soaking chamber (23) is mirror finished.
6. The overflow glass substrate forming thickness control device as claimed in claim 1, wherein the adjacent distance between the plurality of U-shaped cooling air pipes (22) is 20-25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270109.2U CN214654436U (en) | 2021-01-29 | 2021-01-29 | Overflow-method glass substrate forming thickness control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270109.2U CN214654436U (en) | 2021-01-29 | 2021-01-29 | Overflow-method glass substrate forming thickness control device |
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| CN214654436U true CN214654436U (en) | 2021-11-09 |
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| CN202120270109.2U Active CN214654436U (en) | 2021-01-29 | 2021-01-29 | Overflow-method glass substrate forming thickness control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811793A (en) * | 2021-01-29 | 2021-05-18 | 彩虹显示器件股份有限公司 | Device and method for controlling forming thickness of glass substrate by overflow method |
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2021
- 2021-01-29 CN CN202120270109.2U patent/CN214654436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811793A (en) * | 2021-01-29 | 2021-05-18 | 彩虹显示器件股份有限公司 | Device and method for controlling forming thickness of glass substrate by overflow method |
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