CN113415977B - Protective device, heating furnace and deformation prevention method - Google Patents
Protective device, heating furnace and deformation prevention method Download PDFInfo
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- CN113415977B CN113415977B CN202110547724.8A CN202110547724A CN113415977B CN 113415977 B CN113415977 B CN 113415977B CN 202110547724 A CN202110547724 A CN 202110547724A CN 113415977 B CN113415977 B CN 113415977B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
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- Engineering & Computer Science (AREA)
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of glass production equipment, in particular to a protection device, a heating furnace and a deformation prevention method. The protection device comprises a detection unit, a control unit and pushing units (1) which are arranged in pairs, wherein the pushing units in pairs are kept at intervals and are respectively arranged at two opposite sides of the overflow brick (8) in the width direction, the pushing units comprise pushing parts (2), and the pushing units in pairs can respectively prop against and tightly prop against the two sides of the overflow brick through the pushing parts so as to jointly clamp the overflow brick; the control unit is respectively and electrically connected with the detection unit and the paired pushing units, and can control the paired pushing units (1) to clamp the overflow bricks in real time through the pushing parts according to the pushing conditions of each pushing part detected by the detection unit and the overflow bricks. The protection device controls the paired pushing parts to clamp the overflow bricks in real time through the control unit according to the pushing conditions of each pushing part and the overflow bricks detected by the detection unit, thereby being beneficial to slowing down the creep deformation of the overflow bricks.
Description
Technical Field
The invention relates to the technical field of glass production equipment, in particular to a protection device, a heating furnace and a deformation prevention method.
Background
Currently, the photoelectric glass substrate mainly adopts two production modes of overflow downdraw method and float method. The specific process for producing the photoelectric glass substrate by adopting the overflow downdraw method is as follows: and (3) flowing molten glass into the overflow bricks, slowly overflowing from the two side brick edges of the overflow bricks to form two-side glass flows, converging the two-side glass flows to form a piece of glass when the two-side glass flows down to the brick tips of the overflow bricks, and pulling the glass to form a plate by a traction roller, so that the photoelectric glass substrate is manufactured. The width of the photovoltaic glass substrate is mainly determined by the length of the overflow bricks, and the longer the overflow bricks are, the wider the photovoltaic glass substrate is. In order to ensure that the molten glass flows smoothly within the overflow bricks, the overflow bricks are placed in a muffle furnace and heated to an elevated temperature of 1300 ℃.
However, the overflow brick is easy to creep deformation, the dimensional accuracy of the overflow brick is changed, the flow distribution of molten glass in the overflow brick is directly influenced, the thickness of a produced glass substrate is uneven, in addition, the overflow brick is broken even because of serious deformation, production is stopped, and the production cost is high.
Disclosure of Invention
In view of the above, the present invention provides a protection device, a heating furnace and a deformation prevention method, so as to solve the problem that the photoelectric glass substrate in the prior art cannot be produced smoothly due to easy creep deformation of overflow bricks.
In order to achieve the above object, an aspect of the present invention provides a protection device for preventing deformation of overflow bricks, the protection device comprising a detection unit, a control unit, and a pair of ejector units, wherein: the pushing units are spaced apart and respectively arranged on two opposite sides of the overflow brick in the width direction, each pushing unit comprises a pushing part, and the pushing units in the pair can respectively prop against and tightly prop against two sides of the overflow brick through the pushing parts so as to jointly clamp the overflow brick; the detection unit can detect the tight jacking condition between each pushing part and the overflow bricks; the control unit is respectively and electrically connected with the detection unit and the ejection units in pairs, and can control the ejection units in pairs to clamp the overflow bricks through the ejection parts according to the ejection conditions detected by the detection unit.
Optionally, the detecting unit includes a pressure detector capable of detecting a pressure applied to the overflow brick by the ejector and feeding back the detected pressure information to the control unit.
Optionally, the control unit is configured to:
comparing the pressure value detected by the pressure detector with a preset range; and
and when the pressure value is smaller than the preset range, controlling the pushing part to move towards the overflow brick so as to tightly prop against the overflow brick, and when the pressure value is larger than the preset range, controlling the pushing part to move away from the overflow brick so as to loosen the overflow brick.
Optionally, the pushing unit comprises a pushing body, and the pushing body is configured to enable the pushing portion to perform telescopic movement between the pushing body and the overflow brick, so that the pushing portion can push against or release the overflow brick.
Optionally, the pushing top is the screw rod, the pushing unit includes the guide piece that has the screw, the pushing main part sets up to can drive the screw rod carries out rotatory concertina movement, the guide piece passes through the screw spiro union in the screw rod and can guide the screw rod is followed the length direction of screw rod carries out concertina movement.
Optionally, the screws of the pair of ejector units are arranged opposite to each other and co-linear.
Optionally, the protection device comprises a pair of propping pieces, wherein the pair of propping pieces are kept at intervals and are respectively arranged at two sides of the overflow brick, and each pushing part is used for propping the overflow brick through the corresponding propping piece.
The second aspect of the invention also provides a heating furnace comprising the protection device, the heating furnace comprising a furnace body, the furnace body having a heating cavity to be able to accommodate and heat the overflow bricks, the ejector unit being mounted to the furnace body and the ejector part being able to extend into the heating cavity to eject the overflow bricks.
According to a third aspect of the present invention, there is provided a deformation preventing method for preventing deformation of overflow bricks by the guard device, the deformation preventing method comprising:
a. detecting the tight jacking condition between each pushing part and the overflow bricks through the detection unit;
b. and the control unit controls the paired ejection units to clamp the overflow bricks through the ejection parts according to the ejection conditions detected by the detection unit.
Optionally, in step a, the amount of pressure applied to the overflow brick by the ejector is detected by the detecting unit, and in step b, the control unit may control according to a comparison result between the pressure value detected by the detecting unit and a preset range, wherein: when the pressure value is lower than the preset range, controlling the pushing part to move towards the overflow brick so as to tightly push the overflow brick; and when the pressure value is higher than the preset range, controlling the pushing part to move away from the overflow brick so as to loosen the overflow brick.
Through the technical scheme, the protection device supports and jacks the two sides of the overflow bricks through the pushing parts of the paired pushing units so as to clamp the overflow bricks together, and controls the paired pushing units to clamp the overflow bricks through the pushing parts in real time according to the jacking condition between each pushing part and the overflow bricks detected by the detection unit through the control unit, so that the overflow bricks can be kept in a clamping state through the paired pushing units, creep deformation of the overflow bricks is facilitated to be slowed down, the deformation degree of the overflow bricks is remarkably reduced, the protection requirement of the overflow bricks is met, and the service life of the overflow bricks is greatly prolonged.
Drawings
FIG. 1 is a schematic view of a heating furnace according to the present invention;
fig. 2 is a left side view of the heating furnace shown in fig. 1.
Description of the reference numerals
1. A push unit; 2. pushing the top; 3. a mounting frame; 4. a guide member; 5. pushing the main body; 6. a furnace body; 7. a heating chamber; 8. overflow bricks; 9. and (5) a jacking piece.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
According to research, the overflow brick is generally made of special ceramic high-temperature resistant materials, and creep can occur under the high-temperature condition of a heating furnace (such as a muffle furnace and the like) for a long time, so that the middle part of the brick body of the overflow brick slowly sinks, and the middle part of the brick body is continuously narrowed (namely, the middle part of the brick body is continuously narrowed in the width direction of the brick body); and the longer the brick body, the larger the deformation is generated, and the more the brick body sinks. Along with the dimensional change of the overflow brick caused by the creep deformation, the flow distribution of molten glass in the overflow brick is directly influenced, and the thickness of the produced glass substrate is uneven.
In order to solve the above problems, a first aspect of the present invention provides a protection device for preventing deformation of overflow bricks 8, as shown in fig. 1 and 2, comprising a detection unit, a control unit, and a push unit 1 provided in pairs, wherein: the pairs of ejector units 1 are kept at intervals and are respectively arranged on two opposite sides of the overflow brick 8 in the width direction, the ejector units 1 comprise ejector parts 2, and the pairs of ejector units 1 can respectively prop against and tightly prop against two sides of the overflow brick 8 through the ejector parts 2 so as to jointly clamp the overflow brick 8; the detection unit can detect the propping condition between each pushing part 2 and the overflow bricks 8; the control unit is respectively and electrically connected with the detection unit and the paired pushing units 1, and can control the paired pushing units 1 to clamp the overflow bricks 8 in real time through the pushing parts 2 according to the tightly pushing conditions detected by the detection unit.
Through the technical scheme, the protection device supports and tightly pushes against two sides of the overflow bricks 8 through the pushing parts 2 of the paired pushing units 1 (for example, a pair of pushing units) so as to jointly clamp the overflow bricks 8, and the paired pushing units 1 are controlled to clamp the overflow bricks 8 in real time through the pushing parts 2 according to the tightly pushing condition between each pushing part 2 and each overflow brick 8 detected by the detection unit through the control unit, so that the overflow bricks 8 can be kept in a clamping state through the paired pushing units 1, creep deformation of the overflow bricks 8 is facilitated to be slowed down, the deformation degree of the overflow bricks 8 is obviously reduced, the protection requirement of the overflow bricks 8 is met, and the service life of the overflow bricks 8 is greatly prolonged.
Further, the detection unit comprises a pressure detector capable of detecting the amount of pressure applied by the ejector 2 to the overflow bricks 8 and of feeding back the detected pressure information to the control unit; by adopting the pressure detector as the detecting unit, the pressure applied by the pushing top 2 to the overflow bricks 8 can be obtained in real time, so that the control unit can control the paired pushing top units 1 to clamp the overflow bricks 8 in real time through the pushing top 2 according to the pressure value detected by the pressure detector, and the regulation and control are more rapid.
Further, the control unit is configured to: comparing the pressure value detected by the pressure detector with a preset range; when the pressure value is smaller than the preset range, the pushing part 2 is controlled to move towards the overflow brick 8 to tightly push the overflow brick 8, and when the pressure value is larger than the preset range, the pushing part 2 is controlled to move away from the overflow brick 8 to loosen the overflow brick 8, so that the control unit can control the overflow brick 8 to be always subjected to the pressure applied by the pushing part 2 in the preset range, and the protection device is controlled to apply the quantitative adjustable clamping effect to the overflow brick 8 by the pushing unit 1, so that the overflow brick 8 can be in a clamping state with more stable stress. The control unit may be in various forms, for example, a PLC control system or the like.
It is found that as the service time of the overflow brick 8 increases, the middle part of the brick body of the overflow brick 8 gradually sinks and narrows, and the deformation process of the overflow brick 8 can be divided into two stages, for example, a first stage in which the deformation of the overflow brick 8 is lighter and a second stage in which the deformation of the overflow brick 8 is more serious. In order to reasonably protect different deformation degrees of the overflow bricks 8, the preset range comprises a first preset range suitable for the first stage and a second preset range suitable for the second stage, wherein the first preset range can be x+/-0.4 kN (wherein the value range of x can be 6.5kN-8.5 kN), the second preset range can be y+/-0.4 kN (wherein the value range of y can be 6.2kN-8.2 kN), so that the protection device can reasonably control the paired pushing units 1 to apply proper clamping action to the overflow bricks 8 according to the specific deformation degrees of the overflow bricks 8, the creep deformation characteristics of the overflow bricks 8 are more met, the overflow bricks 8 can be guaranteed to be always in an optimal clamping state, the creep deformation of the overflow bricks 8 is further slowed down, and the service life of the overflow bricks 8 is remarkably prolonged. Wherein, during the use of the overflow bricks 8, the first stage and the second stage may be set to any form, for example, the first stage may be the first year of the use of the overflow bricks 8 and the second stage may be the second year of the use of the overflow bricks 8.
In general, when the material and dimensions of the overflow bricks are the same, the creep deformation rate of the overflow bricks is about the same. In order to simplify the overall structure of the above-mentioned protection device, the control unit of the protection device can also control the ejector 2 of the paired ejector units 1 according to time to eject the overflow bricks with reference to different preset ranges (for example, the protection device can design the above-mentioned first stage and second stage according to time), instead of the pressure control mode adopted by the above-mentioned protection device by providing the pressure detector. At this time, the guard may be provided in various forms, for example, a control unit of the guard may be designed with a timing function, or the guard may be additionally provided with a timer which is capable of timing and which is electrically connected to the control unit and is capable of feeding back the timing result to the control unit.
Further, the pushing unit 1 includes a pushing main body 5, where the pushing main body 5 is configured to enable the pushing portion 2 to perform telescopic movement between the pushing main body 5 and the overflow brick 8, so that the pushing portion 2 can push or release the overflow brick 8, and the pushing portion 2 can push or release the overflow brick 8 in a telescopic movement manner, so that the operation is more convenient.
According to one embodiment of the invention, the protection device can be arranged as a part of a heating furnace, in particular, the heating furnace comprises a furnace body 6, the furnace body 6 is provided with a heating cavity 7 so as to be capable of accommodating and heating the overflow bricks 8, the ejection bodies 5 of the ejection units 1 in pairs can be positioned outside the furnace body 6 and respectively arranged at two opposite sides of the furnace body 6, the two opposite sides of the furnace body 6 are respectively provided with a plurality of mounting holes, each ejection part 2 is arranged to be inserted into the heating cavity 7 from the corresponding mounting hole and tightly push the overflow bricks 8, the overflow bricks 8 are tightly pushed or released by the ejection units in a telescopic movement mode, and only the ejection parts 2 need to be extended into the heating cavity 7 of the heating furnace, so that the mounting space required by the ejection units is reduced, and the design is more reasonable. Furthermore, the pushing main body 5 can be assembled outside the furnace body 6 by adopting the mounting frame 3; the mounting frame 3 may take various forms, for example, a plate or other irregularly shaped support structure.
Further, the ejector unit 1 comprises a guide piece 4 with a screw hole, the ejector main body 5 is arranged to drive the screw rod to perform rotary telescopic motion, the guide piece 4 is in threaded connection with the screw rod through the screw hole and can guide the screw rod to perform telescopic motion along the length direction of the screw rod, and the overflow bricks 8 are prevented from being shifted due to the fact that the screw rods of the paired ejector units 1 deviate, are staggered with each other and the like when being telescopic, so that the paired screw rods can always apply force to two specific positions of the overflow bricks 8, and the protection device can clamp the overflow bricks 8 more stably.
It should be noted that the pushing body 5 may be provided in various forms, for example, the pushing body 5 may be a telescopic motor to cause the pushing portion 2 to perform the telescopic movement described above; preferably, the ejector body 5 may also be provided as a telescopic rotating motor (for example, a servo motor with adjustable rotation speed) to cause the aforementioned rotary telescopic movement of the ejector part 2.
Further, the screws of the paired pushing units 1 are opposite to each other and are arranged in a collinear manner, so that the paired screws can apply force to two specific opposite positions of the overflow bricks 8 all the time, and therefore the overflow bricks 8 can be guaranteed to be always in stress balance and still under the clamping action of the protection device, and smooth production of the photoelectric glass substrate is facilitated.
Further, the protection device comprises a pair of propping pieces 9, the pair of propping pieces 9 are kept at intervals and are respectively arranged on two sides of the overflow brick 8, each pushing part 2 is used for propping the overflow brick 8 through the corresponding propping piece 9, so that the pushing part 2 can apply pressure to each position on the corresponding side of the overflow brick 8 more uniformly through the corresponding propping piece 9, and therefore the overflow brick 8 can be kept still all the time under the clamping action of the protection device, and smooth production of the photoelectric glass substrate is facilitated.
A second aspect of the present invention provides a heating furnace, as shown in fig. 1 and 2, comprising the protection device, the heating furnace comprising a furnace body 6, the furnace body 6 having a heating chamber 7 to be able to accommodate and heat the overflow bricks 8, the ejector unit 1 being mounted to the furnace body 6 and the ejector 2 being able to extend into the heating chamber 7 to be able to eject the overflow bricks 8.
Through the technical scheme, the heating furnace can support and tightly prop against two sides of the overflow bricks 8 through the pushing parts 2 of the paired pushing units 1 of the protecting device so as to jointly clamp the overflow bricks 8, and the paired pushing units 1 are controlled to clamp the overflow bricks 8 in real time through the pushing parts 2 according to the propping conditions between each pushing part 2 and each overflow brick 8 detected by the detecting unit through the control unit, so that the overflow bricks 8 can be kept in a clamping state through the paired pushing units 1, creep deformation of the overflow bricks 8 is facilitated to be slowed down, the deformation degree of the overflow bricks 8 is obviously reduced, the protecting requirements of the overflow bricks 8 are met, and the service life of the overflow bricks 8 is greatly prolonged.
The third aspect of the present invention also provides a deformation preventing method for preventing deformation of the overflow bricks 8 by the guard, the deformation preventing method comprising:
a. detecting the propping condition between each pushing part 2 and the overflow bricks 8 through the detection unit; further, the detecting unit may be a pressure detector, so as to detect the pressure applied by the pushing portion 2 to the overflow bricks 8;
b. controlling the paired ejection units 1 to clamp the overflow bricks 8 in real time through the ejection parts 2 according to the ejection conditions detected by the detection units; further, the control unit may be configured to control according to a comparison result between the pressure value detected by the pressure detector and a preset range, where: when the pressure value is lower than the preset range, controlling the pushing part 2 to move towards the overflow bricks 8 so as to tightly push the overflow bricks 8; when the pressure value is higher than the preset range, the pushing part 2 is controlled to move away from the overflow bricks 8 to loosen the overflow bricks 8.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants can be made to the technical proposal of the invention, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (7)
1. A protection device for preventing deformation of overflow bricks (8), comprising a detection unit, a control unit and a pair of ejector units (1), wherein:
the pair of ejector units (1) are kept at intervals and are respectively arranged at two opposite sides of the overflow brick (8) in the width direction, the ejector units (1) comprise ejector parts (2), and the pair of ejector units (1) can respectively prop against and tightly prop against two sides of the overflow brick (8) through the ejector parts (2) so as to jointly clamp the overflow brick (8);
the ejector parts (2) are screw rods, and the screw rods of the paired ejector units (1) are opposite to each other and are arranged in a collinear way;
the detection unit can detect the tight jacking condition between each pushing part (2) and the overflow bricks (8);
the control unit is respectively and electrically connected with the detection unit and the paired pushing units (1), and can control the paired pushing units (1) to clamp the overflow bricks (8) in real time through the pushing parts (2) according to the tightly pushing conditions detected by the detection unit;
the detection unit comprises a pressure detector capable of detecting the pressure applied by the ejector (2) to the overflow bricks (8) and feeding back the detected pressure information to the control unit;
the control unit is configured to:
comparing the pressure value detected by the pressure detector with a preset range;
the preset range comprises a first preset range suitable for a first stage in which the overflow brick (8) is slightly deformed and a second preset range suitable for a second stage in which the overflow brick (8) is severely deformed, wherein the first preset range is x+/-0.4 kN, the value range of x is 6.5kN-8.5kN, the second preset range is y+/-0.4 kN, and the value range of y is 6.2kN-8.2kN; and
and when the pressure value is smaller than the preset range, controlling the pushing part (2) to move towards the overflow brick (8) so as to prop against the overflow brick (8), and when the pressure value is larger than the preset range, controlling the pushing part (2) to move away from the overflow brick (8) so as to loosen the overflow brick (8).
2. The protection device according to claim 1, characterized in that the ejector unit (1) comprises an ejector body (5), the ejector body (5) being arranged to enable a telescopic movement of the ejector part (2) between the ejector body (5) and the overflow brick (8), so that the ejector part (2) can be pushed against or released from the overflow brick (8).
3. Protection device according to claim 2, characterized in that the ejector unit (1) comprises a guide (4) with a screw hole, the ejector body (5) being arranged to be able to bring about a rotational telescopic movement of the screw, the guide (4) being screwed to the screw through the screw hole and being able to guide the screw in a telescopic movement in the longitudinal direction of the screw.
4. The protection device according to claim 1, characterized in that it comprises a pair of gripping members (9), a pair of said gripping members (9) being spaced apart and arranged on either side of said overflow brick (8), each of said ejection portions (2) being arranged to grip said overflow brick (8) by means of a respective said gripping member (9).
5. A heating furnace, characterized in that it comprises a protection device according to any one of claims 1-4, said furnace comprising a furnace body (6), said furnace body (6) having a heating cavity (7) to be able to house and heat said overflow bricks (8), said ejector unit (1) being mounted to said furnace body (6) and said ejector part (2) being able to extend into said heating cavity (7) to be able to eject said overflow bricks (8).
6. A method of preventing deformation of an overflow brick (8) by means of a protective device according to any one of claims 1-4, the method comprising:
a. detecting the propping condition between each pushing part (2) and the overflow bricks (8) through the detection unit;
b. the control unit controls the paired ejection units (1) to clamp the overflow bricks (8) in real time through the ejection parts (2) according to the ejection conditions detected by the detection unit.
7. The deformation prevention method according to claim 6, wherein in step a, the amount of pressure applied to the overflow bricks (8) by the ejector (2) is detected by the detection unit, and in step b, the control unit is capable of controlling based on the comparison of the pressure value detected by the detection unit with a preset range, wherein: when the pressure value is lower than the preset range, controlling the pushing part (2) to move towards the overflow brick (8) so as to tightly push the overflow brick (8); and when the pressure value is higher than the preset range, controlling the pushing part (2) to move away from the overflow brick (8) so as to loosen the overflow brick (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110547724.8A CN113415977B (en) | 2021-05-19 | 2021-05-19 | Protective device, heating furnace and deformation prevention method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110547724.8A CN113415977B (en) | 2021-05-19 | 2021-05-19 | Protective device, heating furnace and deformation prevention method |
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| CN113415977A CN113415977A (en) | 2021-09-21 |
| CN113415977B true CN113415977B (en) | 2023-06-09 |
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| CN114634293A (en) * | 2022-02-21 | 2022-06-17 | 河北光兴半导体技术有限公司 | Overflow brick mounting device and using method thereof |
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| CN87100958A (en) * | 1987-02-28 | 1988-09-07 | 机械工业部上海电缆研究所 | Drawing optical fibers-screening-secondary coated continuous production device |
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| WO2003014032A1 (en) * | 2001-08-08 | 2003-02-20 | Richard Pitbladdo | Sheet glass forming apparatus |
| US7681414B2 (en) * | 2001-08-08 | 2010-03-23 | Corning Incorporated | Overflow downdraw glass forming method and apparatus |
| US9233869B2 (en) * | 2001-08-08 | 2016-01-12 | Corning Incorporated | Overflow downdraw glass forming method and apparatus |
| US6895782B2 (en) * | 2002-08-08 | 2005-05-24 | Richard B. Pitbladdo | Overflow downdrawn glass forming method and apparatus |
| JP6017893B2 (en) * | 2012-08-30 | 2016-11-02 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass plate manufacturing method and glass plate manufacturing apparatus |
| CN106625232A (en) * | 2017-01-18 | 2017-05-10 | 东旭科技集团有限公司 | Overflow brick processing clamp |
| CN208562140U (en) * | 2018-05-23 | 2019-03-01 | 彩虹集团有限公司 | A kind of Muffle furnace overflow brick holding device |
| CN208545299U (en) * | 2018-05-23 | 2019-02-26 | 彩虹集团有限公司 | A kind of Muffle furnace overflow brick jacking mechanism for the production of G7.5 liquid crystal substrate glass |
| CN110845121B (en) * | 2019-11-20 | 2022-06-07 | 成都中光电科技有限公司 | Overflow brick structure suitable for high-temperature creep |
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| CN87100958A (en) * | 1987-02-28 | 1988-09-07 | 机械工业部上海电缆研究所 | Drawing optical fibers-screening-secondary coated continuous production device |
| CN101934299A (en) * | 2010-08-17 | 2011-01-05 | 大连康丰科技有限公司 | Continuous extrusion equipment using atomization cooling technology and cooling method |
| CN108918269A (en) * | 2018-07-27 | 2018-11-30 | 彩虹显示器件股份有限公司 | A kind of method of on-line checking overflow launder creep compliance |
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| CN113415977A (en) | 2021-09-21 |
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