CN203833818U - Optical glass bar drawing machine - Google Patents
Optical glass bar drawing machine Download PDFInfo
- Publication number
- CN203833818U CN203833818U CN201420248309.8U CN201420248309U CN203833818U CN 203833818 U CN203833818 U CN 203833818U CN 201420248309 U CN201420248309 U CN 201420248309U CN 203833818 U CN203833818 U CN 203833818U
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- China
- Prior art keywords
- bar
- servomotor
- optical glass
- drawing machine
- pulling
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- Expired - Fee Related
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- 238000010621 bar drawing Methods 0.000 title claims abstract description 13
- 239000005304 optical glass Substances 0.000 title abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000003028 elevating effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The utility model relates to an optical glass bar drawing machine, belonging to the technical field of post forming of optical glass. The optical glass bar drawing machine mainly solves the problems of low efficiency and high material cost in the existing minitype optical element blank preparation. The optical glass bar drawing machine is mainly characterized by comprising a master bar feeding device, a softening and heating device, a slave bar pulling device, a detection device, a blanking device and a control device, wherein the master bar feeding device is composed of double columns, a screw rod, a lifting lever and a feed servomotor; the softening and heating device is composed of a heating furnace and a resistance wire; the slave bar pulling device is composed of a left pulling wheel, a right pulling wheel, a left pulling servomotor, a right pulling servomotor and a clamping cylinder; the detection device is composed of a thermocouple and a caliper; and the blanking device is arranged below the slave bar pulling device. The optical glass bar drawing machine is more suitable for drawing production of optical glass bars, can enhance the production quality and efficiency and lower the equipment manufacturing cost, and is mainly used for drawing thick bars with diameters of more than 20mm into fine bars with controllable diameters of 5-15mm.
Description
Technical field
The utility model belongs to optical glass secondary field shaping technique, is specifically related to a kind of opticglass bar drawing machine that can complete easy by predetermined diameter, accurately, efficiently the drawing of opticglass bar.
Background technology
Along with the development of aspheric surface precise compression molding technology, optical element market is day by day towards miniaturization and high performance development.The at present preparation of compact optical element blank, after needing first cut large-size massive glass, then through round as a ball, grinding, polishing process, or whole mill, secondary press operation make, and not only production efficiency is low, and material takes highlyer, and the input of personnel and equipment is larger.For this problem, for the higher opticglass trade mark of added value, each manufacturer has released the bar product of corresponding minor diameter specification successively, to reduce the tooling cost of following process producer, improves product competition and share of market.In production practice, one-shaping technique can better complete the drawing of the above bar of diameter 20mm, the product for this below diameter range, and pulling process is difficult to control, and product good article rate is lower, and the general or method by secondary press realizes at present.How, by the good larger-diameter optical glass rod of once shaped, changing system into the product of the required small diameter in market by easier, efficient method, is development original intention of the present utility model.Research and development thinking aspect, existing comparatively proven technique can be for using for reference at present.Application number is that 200410026286.7 Chinese patent discloses a kind of fiber-pulling machine that is applicable to silica glass or polymkeric substance; feed and the heating unit of a kind of fibre-optical drawing by prefabricated rods are provided; be characterized in guaranteeing homogeneity and the stability of feed on physical structure; and can be filled with protective gas in heat-processed, but all do not do any explanation to drawing required towing mechanism and detection, control device.Application number is that the Chinese patent of CN201110322142 discloses the making method of glass preform for a kind of compression molding, introduced a kind of by fiber-pulling machine by the larger gas preform of diameter, be drawn into the method for required diameter product, but be only limited to the explanation to principle, do not relate to the explanation of machinery and control performance, do not possess practicality, and fiber-pulling machine cost is higher, in structure and aspect of performance, be only suitable for the drawing at the following optical fiber of 5mm and optical fiber accessory in diameter, and be not suitable for the drawing of the relatively large optical glass rod of diameter.The utility model attempts to develop a kind of special drawing device for minor diameter opticglass bar, by the prepared larger mother's rod of diameter of once shaped, re-start softening and draw, make the son rod of predetermined diameter specification, enhance productivity and product quality simultaneously, reduce material and take.
Summary of the invention
The utility model provides a kind of opticglass bar drawing machine for above-mentioned weak point exactly, can be by the prepared larger mother's rod of diameter of once shaped, easy by predetermined diameter, to complete accurately, efficiently opticglass bar drawing.
Technical solution of the present utility model is: a kind of opticglass bar drawing machine, is characterized in that: comprise female excellent feeding device, softening heating unit, sub excellent towing mechanism, proofing unit, blanking device and control device; Wherein, the excellent feeding device of described mother is comprised of two columns, leading screw, elevating lever and feed servo motor, and leading screw is arranged between two columns, and feed servo motor is arranged on two columns top, by shaft coupling, is connected with leading screw, and elevating lever is connected with leading screw by screw; Described softening heating unit is comprised of process furnace and resistance wire, and resistance wire is evenly distributed on the flat area at process furnace middle part along cylinder direction; The excellent towing mechanism of described son is comprised of left traction wheel, right traction wheel, left traction servomotor, right traction servomotor and clamping cylinder, left traction wheel, right traction wheel are arranged on respectively on the output shaft of left traction servomotor, right traction servomotor, and left traction servomotor, right traction servomotor are fixed on clamping cylinder; Described proofing unit is comprised of thermopair and caliper, and the installation of TC is in process furnace, and caliper is arranged between process furnace and sub excellent towing mechanism; Described blanking device is arranged on sub excellent towing mechanism below.
It is 1.8mm that resistance wire described in technical solution of the present utility model adopts diameter, and the Aludirome silk that power is 3～5KW is evenly distributed on process furnace middle part along cylinder direction, is of a size of the flat area of Φ 170 * Φ 120 * 90.
Described in technical solution of the present utility model, control device comprises programmable logic controller, man-machine interface, temperature control modules and servo-driven module.
On the basis of technological test, the set(ting)value of softening temperature, speed of feed and pulling speed is comprehensively set, in operating process, control device carries out PID according to detected result to set(ting)value to be adjusted in real time, realizes the accurate control of finished diameter.By rationally setting softening temperature and feeding, pulling speed, shorten as far as possible opticglass in the residence time in recrystallization temperature region simultaneously, can effectively control the generation of glass surface crystallization, guarantee product quality.
Compare with existing opticglass bar technology of preparing, the utility model has reduced middle processing link, has saved input and material expense artificial, equipment.Compare with existing fiber drawing technology, the utility model has improved heating, traction, detection and blanking device, has optimized technique and control program, and the drawing that is more suitable for opticglass bar is produced, and has improved production quality and efficiency, has reduced device fabrication cost.The utlity model has following effect: 1, the diameter of finished product bar is controlled within the scope of 5～15mm, be controlled at ± 0.1mm of diameter error, ovality is controlled at 0.05mm; 2, bar cylinder does not produce obvious crystallization in pulling process, and surface smoothness meets pre-provisioning request.The utility model is mainly used in bar more than diameter 20mm to be drawn into diameter controlled bar within the scope of 5～15mm.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model embodiment.
Fig. 2 is towing mechanism part-structure schematic diagram in Fig. 1.
Fig. 3 is the electrical schematic diagram of Controlling System core component programmable logic controller.
Description of reference numerals: two columns 1, leading screw 2, elevating lever 3, feed servo motor 4, female rod 5, process furnace 6, thermopair 7, resistance wire 8, caliper 9, son rod 10, left traction wheel 11, right traction wheel 12, blanking device 13, left traction servomotor 14, right traction servomotor 15, clamping cylinder 16.
Embodiment
As depicted in figs. 1 and 2, the utility model comprises female excellent feeding device, softening heating unit, sub excellent towing mechanism, proofing unit, blanking device 13 and control device.
Female excellent feeding device is comprised of two columns 1, leading screw 2, elevating lever 3 and feed servo motor 4, wherein, leading screw 2 is arranged in two columns 1, feed servo motor 4 is arranged on two columns 1 top, by shaft coupling, be connected with leading screw 2, elevating lever 3 is connected with leading screw 2 by screw, and can slide up and down along two columns 1, completes the feed motion of female rod.
Softening heating unit is comprised of process furnace 6 and resistance wire 8, and wherein, resistance wire 8 is evenly distributed on the flat area at process furnace 6 middle parts along cylinder direction.
The excellent towing mechanism of son is comprised of left traction wheel 11, right traction wheel 12, left traction servomotor 14, right traction servomotor 15 and clamping cylinder 16, traction wheel is arranged on the output shaft of traction servomotor, and carry out open and close movement with clamping cylinder, complete and clamp and drawing-in motion.
Proofing unit is comprised of thermopair 7 and caliper 9.
Blanking device 13 is arranged on sub excellent towing mechanism below, is the pneumatic collision type blanking device of routine.
Control device comprises programmable logic controller, man-machine interface, temperature control modules and servo-driven module, is conventional Industry Control element, and just sequence of control is different.Control device is connected with feeding, heating, traction, detection, blanking device, carries out softening temperature, speed of feed and pulling speed and controls.
Principle of work of the present utility model is as follows:
A large amount of technological tests show, the diameter of the optical glass rod finished product after drawing and ovality index the impact of temperature, speed control, depend on to a great extent the quality of female rod in being subject to pulling process, therefore the precondition that, optical glass rod draws is the satisfactory female rod of preparation.In the utility model embodiment, select the female rod of opticglass of diameter 35mm, can with mould once shaped, prepare at smelting furnace material mouth, proper as long as moulding process is controlled, can meet drawing requirement completely.
Before drawing starts, the temperature of softening process furnace 6 is controlled to preset value, actual temp value within the scope of 100 ℃～150 ℃, is determined by technological experiment more than the glass transition temperature Ts of the corresponding trade mark.The female rod 5 of opticglass is hung vertically in to softening process furnace 6 tops by elevating lever 3, and female excellent lower surface extends heating zone middle position in stove, keeps stationary state heating 15～20Min, until glass softens and drops out stub bar.When leading the stub bar of the thin rod 10 of glass and arrive the position of left and right traction wheels 11 and 12 through caliper 9, remove stub bar and start left and right traction servomotor 14 and 15, clamp traction wheel simultaneously, then, start lifting servomotor 4, female rod 5 is pressed setting speed feeding from top to down, and concrete speed considers furnace temperature, material situation and production efficiency, by technological test, determine, general control is at 5～25mm/Min.On the basis of initial set value, manually slowly finely tune the draw rate of traction electric machine 14 and 15, make the diameter of the thin rod 10 of glass become gradually large, when reaching predetermined diameter scope, the master mode of traction wheel is proceeded to automatically, and control device, according to the diameter measurement value of the X-direction of the feedback of caliper 9 and Y direction, calculates diameter mean value and the ovality numerical value of bar, use PID calculation function automatically to regulate pulling speed, realize the closed-loop control that bar draws.
Except the quality factor of female rod, the diameter of son rod and the control key of ovality index are also to guarantee the stability of the homogeneity of female excellent material and feeding, pulling speed.The structure of appropriate design heating unit, size and power, can guarantee the uniformity requirement of female excellent material.Preferably, the female rod of the opticglass that is 35mm corresponding to diameter, combustion chamber adopts the cylindric flat silicon carbide articles that is of a size of Φ 170 * Φ 120 * 90, and it is 1.8mm that stove silk adopts diameter, power is the Aludirome silk of 3～5KW, along cylinder direction, is evenly distributed in combustion chamber.This structure can be in furnace temperature and female excellent speed of feed stable in the situation that, guarantee female rod at the homogeneous heating of circumferential direction and soften, glass that flat heating region is conducive to reduce after softening is simultaneously excellent in the residence time of high-temperature zone, reduces the generation of glass surface crystallization.
The stability of feeding and pulling speed not only requires the absolute stabilization of speed of feeding and traction electric machine, and requires the speed of relative movement of the two also must stablize.Stability when realizing slow running, the output shaft of feeding and traction servomotor has all configured the precision speed reduction device of corresponding reduction ratio, can eliminate servomotor when low cruise, detrimentally affect speed being produced because moment of torsion is not enough.As previously mentioned, during production, first determine the speed of feed of female rod, then according to the characteristic requirements that the glass stick volume of feeding in the unit time and drawing should be consistent, by control device, by following relation, calculated the initial value of pulling speed:
In formula, V and D represent respectively linear velocity and female excellent, the sub excellent diameter of glass of feeding, traction.With the pulling speed calculating, draw, in theory can be by the diameter control of son rod in pre-determined range, but consider the impact of environmental factors on furnace temperature and material in production process, often need manually when drawing beginning, according to the changing conditions of the excellent diameter of son, this initial value is finely tuned, optimized.In stably manufactured state, control device on the basis of this optimal value, according to the value of feedback of the excellent diameter of son, according to the setting range of setting, carries out PID to pulling speed and automatically regulates again, realizes the accurate control of pulling finished goods diameter.
In pulling process, control device also, according to the transposition signal that is arranged on the encoder output in traction servomotor, calculates the length distance that son rod stretches, and when reaching preset value, starts blanking device and carries out cutting stock operation.On lifting column, be also provided with upper and lower limit bit switch, when female rod is fed into elevating lever and approaches lower position switch, feed-disabling is also reported to the police, and after being disposed, elevating lever can rapidly increase to upper limit position switch place, starts the drawing of the female rod of next root.
Fig. 3 is the electrical schematic diagram of Controlling System core component programmable logic controller.Wherein, heating unit and servo driving master loop are general fixed sturcture.The input terminus and instruction switch of programmable logic controller is connected with limit switch, receives instruction signal and position signal, output terminal output servo driving pulse and each execution and indicator signal.The communication terminal of programmable logic controller is connected with caliper, the diameter data of Real-Time Monitoring rod, and compare with set(ting)value, simultaneously in conjunction with mother's rod travelling speed of setting in advance, after PID computing, from the traction wheel servo pulse instruction of output terminal output corresponding frequencies.
Claims (3)
1. an opticglass bar drawing machine, is characterized in that: comprise female excellent feeding device, softening heating unit, sub excellent towing mechanism, proofing unit, blanking device (13) and control device; Wherein, the excellent feeding device of described mother is comprised of two columns (1), leading screw (2), elevating lever (3) and feed servo motor (4), leading screw (2) is arranged between two columns (1), feed servo motor (4) is arranged on two columns (1) top, by shaft coupling, be connected with leading screw (2), elevating lever (3) is connected with leading screw (2) by screw; Described softening heating unit is comprised of process furnace (6) and resistance wire (8), and resistance wire (8) is evenly distributed on the flat area at process furnace (6) middle part along cylinder direction; The excellent towing mechanism of described son is comprised of left traction wheel (11), right traction wheel (12), left traction servomotor (14), right traction servomotor (15) and clamping cylinder (16), left traction wheel (11), right traction wheel (12) are arranged on respectively on the output shaft of left traction servomotor (14), right traction servomotor (15), and left traction servomotor (14), right traction servomotor (15) are fixed on clamping cylinder (16); Described proofing unit is comprised of thermopair (7) and caliper (9), and thermopair (7) is arranged in process furnace (6), and caliper (9) is arranged between process furnace (6) and sub excellent towing mechanism; Described blanking device (13) is arranged on sub excellent towing mechanism below.
2. opticglass bar drawing machine according to claim 1, it is characterized in that: it is 1.8mm that described resistance wire (8) adopts diameter, power is the Aludirome silk of 3～5KW, along cylinder direction, be evenly distributed on process furnace (6) middle part, be of a size of the flat area of Φ 170 * Φ 120 * 90.
3. opticglass bar drawing machine according to claim 1 and 2, is characterized in that: described described control device comprises programmable logic controller, man-machine interface, temperature control modules and servo-driven module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248309.8U CN203833818U (en) | 2014-05-15 | 2014-05-15 | Optical glass bar drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248309.8U CN203833818U (en) | 2014-05-15 | 2014-05-15 | Optical glass bar drawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203833818U true CN203833818U (en) | 2014-09-17 |
Family
ID=51511688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420248309.8U Expired - Fee Related CN203833818U (en) | 2014-05-15 | 2014-05-15 | Optical glass bar drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203833818U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253821A (en) * | 2017-07-10 | 2017-10-17 | 北京工业大学 | It is a kind of that glass bar can be drawn to the method and apparatus that glass fiber is made in heating |
| CN109354399A (en) * | 2018-12-13 | 2019-02-19 | 武汉光盛通设备咨询有限公司 | A kind of vertical optical fiber preform bar stretching equipment |
| CN109704544A (en) * | 2019-01-07 | 2019-05-03 | 湖北新华光信息材料有限公司 | A kind of optical element blank prefabricated rods manufacturing device and element blank manufacturing method |
| CN110217975A (en) * | 2019-06-28 | 2019-09-10 | 成都光明光电股份有限公司 | The drawing method and device of optical glass bar |
| CN114315113A (en) * | 2021-12-16 | 2022-04-12 | 武汉光谷长盈通计量有限公司 | Glass capillary drawing forming equipment |
-
2014
- 2014-05-15 CN CN201420248309.8U patent/CN203833818U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253821A (en) * | 2017-07-10 | 2017-10-17 | 北京工业大学 | It is a kind of that glass bar can be drawn to the method and apparatus that glass fiber is made in heating |
| CN109354399A (en) * | 2018-12-13 | 2019-02-19 | 武汉光盛通设备咨询有限公司 | A kind of vertical optical fiber preform bar stretching equipment |
| CN109704544A (en) * | 2019-01-07 | 2019-05-03 | 湖北新华光信息材料有限公司 | A kind of optical element blank prefabricated rods manufacturing device and element blank manufacturing method |
| CN110217975A (en) * | 2019-06-28 | 2019-09-10 | 成都光明光电股份有限公司 | The drawing method and device of optical glass bar |
| CN110217975B (en) * | 2019-06-28 | 2021-11-09 | 成都光明光电股份有限公司 | Method and device for drawing optical glass bar |
| CN114315113A (en) * | 2021-12-16 | 2022-04-12 | 武汉光谷长盈通计量有限公司 | Glass capillary drawing forming equipment |
| CN114315113B (en) * | 2021-12-16 | 2024-05-03 | 武汉光谷长盈通计量有限公司 | Glass capillary tube drawing forming equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |