CN1031068A - Glass-pulling technology and stove - Google Patents
Glass-pulling technology and stove Download PDFInfo
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- CN1031068A CN1031068A CN 87105341 CN87105341A CN1031068A CN 1031068 A CN1031068 A CN 1031068A CN 87105341 CN87105341 CN 87105341 CN 87105341 A CN87105341 A CN 87105341A CN 1031068 A CN1031068 A CN 1031068A
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Abstract
The rate of heating and the uniformity coefficient of control prefabricated rods processing district provide prefabricated rods to soften heat by forced convection in this technology in the glass-pulling operation, import temperature and all controlled fluid of speed with an isolating fluid heating zone.Can further control the processing district size by the position that changes movable exit sleeve.Reach before homogeneity and the accuracy that improves temperature near the normalizing temperature of preselected value by making prefabricated rods enter stove.The best glass-pulling equipment of finishing this technology is one " two Room stoves ", and it has with air delivery pipe and the hotair chamber that the drawing chamber is connected, and drawing the chamber has the prefabricated rods import and draw products export.The two ends that draw the chamber all have can regulate the diameter opening.Ingress is provided with the pre-cooled collar.The exit is provided with telescopic jacket.
Description
But the objective of the invention is to processing remollescent insulating material, specifically by primary and through the glass preform of processing draw covering arranged with unclad fibre and fibrous bundle.The present invention is specifically related to the technology by the fusion of the prefabricated rods that enters stove or softening end drawn glass fiber, fibrous bundle and composite product.
The effective ways that the glass-pulling technology is that current production is zonal, composite product (for example photoconductive fiber screen, fluorescent screen and various video setter) made up and be processed in flexible fibre or production after being used for than short element.Drawing technology of the present invention except being used to draw fiber and the multi-bundle, also is used for the post-processed of composite product.This processing comprises uniformly or the reduction of the cross section of gradual change that back one technology is used to form video extender and convergent device.This processing also comprise in various degree reverse and other the operation to form image directional devices (for example local turner, phase inverter etc.) again.
An important target is can even heating and strict controlled temperature in the critical softened zone of prefabricated rods or workpiece in the art.The heating of processing district is inhomogeneous to be the major cause that product produces defective and scraps, the material and the production time of the useless many costlinesses of its consumption.This consideration is particularly important when making product by the very complicated prefabricated rods of cross section characteristic, occurs optics in this cross section most probably, and physics and thermodynamic behaviour aspect huge is unexpected variation sometimes.Prefabricated rods and product cross-sectional dimension, heating and draw rate meet and exceed conventionally prescribes a time limit, and the requirement of even heating then reaches final criticality.Even heating in the draw machines that draws the required thermophilic of more accurate composite prod, this is the target that present technique field skilled labor fails to realize.The major cause of failing to reach this target is to be that the radiant heater element of 1100 ° to 1400 (600 to 750 ℃) is difficult to obtain uniform radiant heat by temperature.It is its natural characteristics that isolating radiating element produces non-uniform heating.Produce a kind of source of radiation of continued circling melting zone or in the matrix of disperse the trial of embedding interruption heating unit all do not obtain desirable homogeneity.Even and most of composite prod radiating capacity is evenly to import into evenly to absorb.This has just constituted the heterogeneous radiation source problem, even and the ideal uniform source of radiation also limited its homogeneity level.
This absorption difference problem is present in different glass in the identical product, have different infrared absorption characteristics the fuse of covering (for example with respect to) or relate to thick prefabricated rods or draw the major diameter product some use.Under the latter event, must carefully regulate the heating rate that the surface, processing district absorbs according to the speed that heat passes to workpiece centre.Towards the position at center, the penetrativity of the penetrativity specific surface of its radiating capacity self is low.
Use the method for approximate homogeneous radiation element to occur, it comprises makes prefabricated rods and product to be enough to eliminate speed rotation on its public axle of radiant heating source ununiformity.This technical requirements has the complex mechanism that can coordinate prefabricated rods and product rotation; If product needed also requires to have rotation and horizontal conversion tack-up spool.This technology produces level (layering) homogeneity at most only, but can not get vertical homogeneity, and its result has replaced " focus " with " heat ring ".And this technology does not propose the non-homogeneous absorption problem of composite prod.
Particularly when containing the unbalanced absorber element of resistates infrared absorption (for example EMA covering or fiber) in the product, the problem of non-homogeneous absorption is particularly serious.These elements produce irregular temperature of its inherent and viscosity in radiant-type furnace, this is restricted with regard to the selection that makes draw rate and is complicated.
Second consequence that can not obtain even heating in the drawing process is that the size and the reduction gear ratio in the pulling process of prefabricated rods is subjected to strict restriction.Consequently having the fibre-optic composite prod of very small diameter must just can obtain through multiple-stage treatment.These processing comprise: draw ultimate fibre, draw multi-bundle, draw compound multi-bundle, and back several prods bundle is melt into piece.This multiple-stage treatment expends the production time, and each level all has himself scrap rate (about 20%).
Therefore, the present invention's free-revving engine provides a kind of processing district that acts on prefabricated rods, makes the technology of the strict controlled and even heating of product.
Second purpose of the present invention provides a kind of technology that can relax greatly prefabricated rods, product size and the restriction of pulling-down rate.
The 3rd purpose of the present invention provide a kind of can be in a certain photoconductive fiber treating processes the once follow-up pulling-down operation of cancellation and technology that quality does not reduce at least.
The 4th purpose of the present invention provides a kind of technology, and it can select and control the size of the processing district that reduction takes place.On the other hand, the present invention also provides a kind of device that is particularly suitable for carrying out even heating and can be controlled the processing district that can draw prefabricated rods.
By the explanation of specific embodiment, all purposes of the present invention will be clearer.
、⑺１ひぶぷ１ひㄅ１ひㄊ丶刂 ３Ｍ 。
This technology also comprises the temperature regulation that just draws a bit of prefabricated rods of outside at stove, enter the processing district so that guarantee the prefabricated rods of handling through constant pre-temperature, thereby reduce the requirement of regulating envrionment temperature, and can compensate the different thermal conduction of different prefabricated rods and gripping unit thereof.In fact, this section forms a thermal insulator, has avoided undesirable heat to pass on the prefabricated rods from stove.
Technology of the present invention also is included as regulates import that stove draws the chamber and controls the mobile of telescopic adiabatic apparatus to the operating range of outlet, thereby also may command of the size of processing district.
Technology of the present invention be that draw machines is particularly suitable for finishing this technical process on the other hand.Stove comprises a drawing chamber and the preferably isolating heating chamber that controllable heater is arranged that prefabricated rods import and outlet are arranged.Isolated fluid heating chamber and drawing chamber are connected with forced convection method by an intake channel or air channel.It is that stove has the return airway between drawing chamber and heating chamber that the present invention also has characteristics, in the prefabricated rods ingress initial temperature setting device is housed, and the movable jacket that links to each other with the outlet of drawing chamber.
When technology and equipment all changed, the import of prefabricated rods can be in the bottom of stove, and product is then upwards pulled out by the outlet that stove draws on the top, chamber.Can the independent utility operation and the change of parts.
Technology disclosed by the invention and equipment have solved the technical problem that major diameter can draw the workpiece even heating, and this workpiece all may have complicated shape in all directions, and may be made up of the material with different radiation absorption characteristics.Supply with in the processing district that fluid high-speed, forced convection can pass to workpiece with heat energy and the difference of formed temperature great disparity radiation heating can not appeared at the time.Thereby the conductivity of avoiding surperficial focus or inner focus not to depend on entirely entering workpiece or a small amount of free convection of desirable air can also be controlled by regulating forced convection fluidic speed and temperature.In addition, when the heat energy utility ratio was set-point, control processing district size (this is related to the shape of drawing and the shape of reduced section) can be resolved very soon by jacket is stretched in the forced convection structure.
Can understand the present invention's technology and equipment well by the specific embodiment shown in the accompanying drawing, but this is illustration rather than restriction.
Fig. 1 illustrates the schema of the embodiment of technology of the present invention.
Fig. 2 is the sectional view that embodies the stove of implementing the principle of the invention.
Fig. 3 illustrates the simple embodiment of the pre-cooled ring of part.
Fig. 4 is the top view that the drawing chamber import optimised form of diameter regulating device is arranged.
Fig. 5 is V-V sectional view of the heating fluid distribution apparatus embodiment that illustrates of Fig. 2.
Fig. 6 illustrates the action of adjustable jacket.
Fig. 7 illustrates and can finish upwards the modified version furnace design that (rather than downwards) draws operation.
Because some details of the present invention becomes with the product of making and the starting material of processing, thereby available several diverse ways is implemented the present invention.Below be the detailed description of some successful Application, comprise and think the best way at present.For implementing the custom-designed device of technological process of the present invention also in this detailed description.
The process block diagram of Fig. 1 shows the basic working procedure of generalized flowsheet.Because this flow process can be carried out strict control to the prefabricated rods heating on through the basis of the air themperature of trying to achieve with test calculated and data on flows, therefore for making this flow process use the initial temperature that optimizing at first should be controlled prefabricated rods to a certain extent.Usually this initial temperature depends on that not only envrionment temperature (temperature that only controls environment is not enough) depends on that also the operation process furnace is by the thermal conductivity of prefabricated rods and feed mechanism thereof in the past.In flow process of the present invention owing to being provided with temperature regulation before together prefabricated rods can being entered process furnace has reduced these factors to the operation of " normalizing " temperature influence.In most cases this operation is refrigerating work procedure but during the course some stage and also may is slight heating under certain envrionment conditions.Temperature normalizing operation 10 simple embodiment are to blow on the prefabricated rods outside surface of furnace inlet from the hot gas source air that temperature is basicly stable.Simultaneously, prefabricated rods is being provided with presenting of suitable charging mechanism sent into stove in the operation 11 drawing chamber.Comprise the drving sprial that motor drives in these feed mechanisms.If fibre core and covering or one group of covering need be with different speed drive, this mechanism just may comprise several groups of drving sprials.In these mechanisms turning device needn't be set.These mechanisms all are that the complicated apparatus of establishing in order to make stove reach aforementioned homogeneity only obtains limited success.
Key of the present invention is that the operation that adds warm air or other heat exchanging fluid should be finished in a heating chamber, and this heating chamber preferably separates with the fibre-optical drawing chamber.If not separated, then should between processing district and indoor hot radiant element, shielding be set at least.Then, utilize controlled forced convection device such as blower fan, air pump etc. import warm air or send into the drawing chamber.Air heating operation 12 preferably utilizes the data of temperature survey operation 14 to control (for example change the resistance of heating unit or introduce adjustable cold air stream).This measurement is preferably in when air admission draws the chamber to be carried out.This measurement can utilize being come the control air heating unit and realized by a thermopair that inserts in the air flow channel by arithmetic system electric or the electronic processing device transmission of preliminary election.These treatment unit may comprise utilize to calculate and or tabulation and parameter feed back or feed-forward process, be that operation 15 is adjusted in continuous or discrete temperature control then.This operation also may comprise the variation of controlling hot air flowrate.Its objective is a certain given prefabricated rods in given workspace is set up a temperature/time curve that is suitable for even heating.For this reason, operation 16 is introduced warm air and is flow through the prefabricated rods workspace.The most handy turbulence type of air-flow, but the directivity of the workspace of flowing through should be arranged on a certain assigned direction.And air inlet preferably distributes along the garden week that draws chamber prefabricated rods entrance end.
When prefabricated rods reaches working temperature, can in drawing operation 17, utilize the acting in conjunction of gravity and tractive force to draw undergauge product in due form.Because the diameter decrement of draw rate and prefabricated rods product depends on temperature curve and workspace length (and other factors), thereby may need to be provided with an additional work district forming process 18.According to the characteristics of product requirement and/or prefabricated rods, the workspace shape can before drawing beginning, regulate or in pulling process the different stages adjust.
A kind of successful method that workspace is shaped is to regulate to draw the chamber import to the operating range between the actual outlet.It is to be noted that especially also may be provided with a jacket with tensile axis is concentric this moment.This cover can change length between the import in watch-keeping cubicle and outlet.Temperature control for convenience can be returned the warm air that will flow through workspace in the operation 19 at air and be drawn to reheat in the heating chamber from draws the chamber.Measure if carry out additional temp with operation 20, then can control accurately and regulate heat-processed to deflating.This adjusting can be carried out according to the principle of calculating heat absorption from the temperature difference.
After goods drew, common goods were handled and are promptly finished, illustrate with operation 21 usually.Then need to be equipped with the reciprocating type winding roll of revolution for the ribbon-like fibre goods.Also can carry out additional coatings handles.For shorter goods cycle silk section shut-off device can be set.This based article may be that work in-process also may be bundled into MULTIPLE COMPOSITE element (multi-and multi/multi-elemint composites) for further processing.
Because this process heating very evenly thereby can to draw large-diameter fibre-optical and find upwards to present from the process furnace bottom prefabricated rods wire drawing that makes progress from the great prefabricated rods of diameter be possible with favourable.This flow scheme improvements has advantageously been improved the influence of gravity to workspace shaping and goods winding quality aspect.This improvement is specially adapted to the long workspace with little tapering.
Common flow process of the present invention once was drawn into the optical fiber of diameter 0.030 inch (0.080cm) in the compound prefabricated rods of not using special control device condition diameter to be surpassed 4.5 inches (12cm) next time.This prefabricated rods was once handled to about 70 °F (21 ℃) with normalizing.Air heating just blasts the drawing chamber after about 1380 °F (750 ℃).Air is forced at high speed by workspace, about 1375 of the temperature during extraction (747 ℃).The productivity of this method and quality of item are at least not second to conventional radiation heating drawing.And need pass through repeatedly pulling in order to obtain identical footpath shrinkage conventional method.
In another case, can once just the prefabricated rods of 3 inch diameters be drawn into 1 inch goods owing to this flow process homogeneous heating, and quality is good, the productivity height.Prefabricated rods is sent into and from the top dragline from lower furnace.
The prefabricated rods size is not found that significantly restriction is the big advantage that this flow process is used.When being used for conventional pulling process, its productivity reaches 5～6 times of usual way and is under the condition that is subjected to existing up till now or improved dragline mechanics limit.
Because native system can be passed to large-size workpiece with heat effectively in the operation and not make its distortion thereby can extremely uncommon mode be used normal the drawing.Originally the major diameter goods of being made up of a large amount of fine-fibereds were to make with the extremely low method of a kind of efficient, and heated in order to get rid of the space and apply high pressure and make fiber overlapping and melt.Have been found that these class major diameter goods can be with following more efficient methods manufacturing.At first the fiber pack is become the diameter Shu Zuowei prefabricated rods bigger slightly than required goods.This fibrous bundle vacuumizes this cover after enclosing the resistance to air loss glass sock again.Subsequently with the prefabricated rods of gained by method of the present invention by stove, but only drawing-down a little can reach the diameter that needs.Can make by even fusion like this, void-free, there are not the fibrous major diameter goods of distortion.These goods can be cut into the resistance to air loss thin slice.In actually operating, may when drawing, continue big envelope is vacuumized.Because this control can cause slow distortion, thereby thereby might apply a twisting motion to workpiece and obtain the constant fibre product of the hand of spiral drawing the district.These goods can cut into image rotator or phase inverter.
Unit describe
The device that specialized designs is implemented flow process of the present invention is shown in Fig. 2～7, especially illustrates with the most intelligible improved schematic diagram in Fig. 2.
Though the process furnace of existing forced convection of past, process furnace disclosed by the invention is to have the unique system of other device and have the shape that is suitable for utilizing the special property of forced convection in the glass-pulling process.Use the forced convection heating method and make it draw diameter in glass-pulling technology, speed and quality (representing by the product scrap rate) aspect has obtained very unexpected surprising raising.
Total system is shown in Fig. 2 and represents with numeral 30.Comprising a feed mechanism assembly 31, it preferably has the ability of presenting compound prefabricated rods different components with different feed rates.May include the vacuum extractor 32 and the clamp mechanism 33 of seal in the feed mechanism assembly.The processing object of device is the prefabricated rods 34 that remollescent can draw of being heated.For realizing that prefabricated rods enters process furnace 40 temperature normalizing before and handles or pre-cooled processing, be provided with the hollow collar 35 or a thermal insulator in this example.Can feed near the homothermic air to this ring from source of the gas 36 through conduit 37 and control valve 38.Pre-cooled gas can be guided prefabricated rods into through the aperture 39 of a series of radial arrangement entad in encircling.Can be successfully easily selected one near the temperature of 70 of room temperatures (about 21 ℃) as the standard operation temperature.For realize keeping the accurate control of prefabricated rods homothermic should above the hollow collar and/or below temperature and/or the volume of temperature sensor with the control precooled air is set.
Prefabricated rods 34 enters process furnace through drawing chamber inlet 41.This ingress preferably is provided with the moderate with the assurance thermosteresis such as ideal refractory materials baffle plate assembly 42 of an adjustable diameter.
Comprise two chambers in the present embodiment process furnace, the first draws chamber 43, and another is the hotair chamber 44 that separates with it.The heating unit that heating chamber is equipped with can be a combustion-type, induction type, arc-induced formula, dielectric medium heating-type.But in preferred embodiment, comprise large-area resistance heating coil 45.Above-mentioned coil is by power supply 46 and controlling organization 47, as adjustable resistance or variable-voltage transformer power supply.
Forced convection device 50(is high-temperature blower for example, air pump etc.) will be through the drawing chamber 43 that the air of heating unit is extracted out and process passage 51 flow directions link to each other.This gas delivery is preferably finished by the distribution apparatus 52 that an inside has forced-draft chamber one class of radial hole.
A temperature sensor 54 is set in certain of gas flow on some signal is delivered to central control system 60.
Air-flow apace or middling speed ground by prefabricated rods/workpiece to form processing district 55.This district effectively ends near outlet 56 or its drawing the chamber.Air-flow continues across return flow line 57 and flows, and this place is provided with forced convection device 58 and reflux gas temperature sensor 59, and signal is also delivered to central control system 60.
Effective exit, watch-keeping cubicle can be provided with diameter regulating device 59, and it is similar to ingress setting device 42.
The effective outlet 56 that draws the chamber is separated by a jacket 62 with its actual outlet 61, and this cover can move in reality exports and stretch into the watch-keeping cubicle and towards import 41.In goods enter this cover behind the entrance end then can with add the hot-fluid isolation.This activity import end points promptly is defined as the terminal point of workspace 55.This movable sleeve can also can utilize class telescoping mechanisms 63 such as servo tooth bar and gear or friction wheel to realize tunable center control with bolt or chuck working fastening.
Goods utilize by gravity, and the dragline mechanism of tractive force etc. draws in normal way.These goods are resent to treatment unit of following step 65 subsequently, as winding roll, and stapling machine, trussing machine, slicing machine etc.
A kind of effective pre-cooled collar 35 can be by the detailed structure manufacturing shown in Fig. 3.Send into the cooling collar and in encircling, flow to prefabricated rods through conduit 37 pressurized air that temperature is constant substantially from a constant temperature source of the gas (as air compressor machine) by radial hole 39.
Fig. 4 is for drawing the detailed top plan view of chamber ingress, and it shows the diameter regulating device 42 of an embodiment.This device can make effective inlet diameter near the diameter (a typical single covering optical fiber prefabricated bar shown in the figure) of prefabricated rods 34.Effectively the diameter regulating device 59 of outlet 56 can use device similarly.
Fig. 5 illustrates the V-V detailed cross-sectional view of the airflow distribution device 52 among Fig. 2, and this device is used for the annular pressure plenum chamber that inside has radial hole 53.Hole shape should be convenient to flow control.In a preferred embodiment, should extend in the axis of workpiece direction during perforate.
Fig. 6 shows the detail drawing of a kind of effective embodiment of adjustable movable sleeve 62.Wherein also be shown in broken lines the regulation range that shortens workspace.This adjusting is to be finished by expansion mechanism 63 under the control of center control device.This expansion mechanism is the garden annular preferably.
Changing into when presenting prefabricated rods and drawing product from top from lower furnace also the device of available Fig. 2 when process finishes satisfactorily.But preferably according to circumstances change the modifying device shown in employing Fig. 7 in order to give full play to advantage of the present invention.In this improvement project, stove should be installed on the support 70,71 and can turn round around transverse axis as required.At this moment, feed mechanism 31 and dragline mechanism 64 just close at it how the straight Bo stern of extensive plum is bluffed prostitute in riotous profusion to the greatest extent in fact again
An organization plan for rotary type stove shown in Figure 7 is it can be made along central horizontal face symmetrical structure.Can be arranged in the middle part from heating chamber to the induction trunk and the airflow distribution device that draw between the chamber like this." import " that draw the chamber like this reaches " outlet " district and can similarly be provided with the return flow line, and flexible collet gives the cooling collar and opening diameter setting device.Use this method, then prefabricated rods and goods are upwards or all convenient equally downwards.Prefabricated rods is depended in its selection, article characteristic and productivity.
We can find out some industry application method thereof of the even heating that pulling process of the present invention provides significantly from the description of said apparatus and characteristics thereof, and other application and advantage then are all beyond one's expectations.
The scrap rate of using multiple operation manufacturing process interval scale in existing radiation furnace is about 20%.Flow process of the present invention and device have reduced this scrap rate widely.
The draw rate of intermediate diameters product is subjected to very big restriction, reason is to need suitable completely even heating to be provided and to have to slow down draw rate to prefabricated rods.It is more satisfactory that the prefabricated rods that flow process of the present invention then can heat larger diameter quickly and evenly makes the winding speed of some goods reach 5～6 times of conventional wire drawing shaping stove and quality.
Comprise can absorbing radiation the goods of the covering of heat and fiber need to carry out special processing after in common radiation furnace, drawing, flow process of the present invention does not then generally need.These goods comprise most of combination picture treatment articles such as window of tube, visual extender, phase inverter etc.
The common composite product in original technological process of the attention of special value is to make with multiple working procedure.This is that the product size decrement that can reach because make prefabricated rods not produce distortion is very limited.In order to obtain MIN heating uniformity, the prefabricated rods size must be limited in below a certain particular value in addition.But this process is the workspace of even heating prefabricated rods then, comprises compound prefabricated rods, and its size can reach 4.5 inches (12cm) even bigger at least.This means:
1. under common product prefabricated rods (undergauge) ratio, can draw large diameter final product.And may cancel last compacting, space and forming process are got rid of in annealing.
2. utilize undergauge might save a step or a few step manufacturing process of MULTIPLE COMPOSITE goods than big this advantage.Cancel these operations and saved time and labor and because the material unaccounted-for (MUF) expense due to inevitable refuse and the waste product.
Obviously, the scope that can not exceed its spirit doing less improvement aspect method of the present invention and structure and the process implementation method.Therefore preferably scope of the present invention is not limited within the particular content of the figure of front and description but should comprises the full content of institute's claim in the following claim.
More than be to explanation of the present invention.Should require as follows by the new invention claim that endorsement of patent is protected:
Claims (16)
1, drawn the technology of product by prefabricated rods, it comprises following step:
(a) prefabricated rods is fed into the import that draws the chamber,
(b) heating fluid makes it to surpass the processing temperature of prefabricated rods,
(c) impel heated fluid to flow through prefabricated rods on one's own initiative and be in the drawing temperature in the processing district up to prefabricated rods,
(d) pass the outlet that draws the chamber by prefabricated rods and draw product.
2, the described technology of claim 1, it also is included in the operation of heating fluid in the isolating heating chamber and will be heated the operation that fluid is delivered to heating chamber.
3, the described technology of claim 2, it also is included in heated fluid and flows through after the heating zone, again fluid is drawn back heating chamber and reheats.
4, the described technology of claim 3, it also is included in selected is to measure to be heated the fluidic temperature on discontinuity position at least, and regulates above-mentioned fluid heating process and above-mentioned speed of transporting operation with temperature value measured.
5, the described technology of claim 1, it comprises that also impelling the part prefabricated rods to enter draws the chamber, and reaches the controlled temperature of preliminary election.
6, the described technology of claim 1, it also is included in facing to the distance of chamber import preliminary election is last and inserts one and drawing chamber adiabatic device from drawing the exit, chamber
7, the described technology of claim 1, wherein prefabricated rods upwards charging below drawing the chamber, and product is upwards to pull out above drawing the chamber.
8, drawn the technology of product by prefabricated rods, it comprises:
(a) from the lower feed prefabricated rods of draw machines,
(b) in draw machines, heat prefabricated rods to processing temperature,
(c) upwards pull out product from draw machines.
9, prefabricated rods is drawn into the glass-pulling equipment of product, it comprises:
(1) stove, this stove has
(a) draw the chamber,
(b) have the independent fluid heating chamber of fluid heating,
(c) air is passed passage by heating chamber and sends into the forced convection parts that draw the chamber,
(d) draw the chamber import,
(e) draw the chamber outlet,
(2) be suitable for pack into the prefabricated rods feed mechanism of above-mentioned import of prefabricated rods.
(3) product that is suitable for product is pulled out above-mentioned outlet draws mechanism.
10, the described equipment of claim 9 also comprises making prefabricated rods draw the device that the chamber import reaches the normalizing temperature.
11, the described equipment of claim 10, the device that wherein makes prefabricated rods reach the normalizing temperature comprise that the collar has many holes of inwardly opening with a conduit and the air source that is connected around the collar that draws the chamber import.
12, the described equipment of claim 9 also comprise a jacket that is extended to drawing chamber import by the outlet of drawing chamber, and this extension is adjustable.
13, the described equipment of claim 9 also comprises the temperature measuring equipment that is arranged in the heating fluid runner.
14, the described equipment of claim 9 also comprises the center control machine structure that connects with the temperature measuring equipment function, control air heating unit and forced convection element, and pass through them and transmit heat with heated fluid.
15, the described equipment of claim 14, wherein, the center control machine structure connects with jacket adding set function, and control jacket setting device.
16, the described equipment of claim 9, wherein, prefabricated rods is to be formed by the element bundle, and this equipment comprises the airtight of sealing prefabricated rods and the shell that vacuumizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105341 CN1024181C (en) | 1987-08-03 | 1987-08-03 | Glass-pulling technology and furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105341 CN1024181C (en) | 1987-08-03 | 1987-08-03 | Glass-pulling technology and furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031068A true CN1031068A (en) | 1989-02-15 |
| CN1024181C CN1024181C (en) | 1994-04-13 |
Family
ID=4815285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87105341 Expired - Fee Related CN1024181C (en) | 1987-08-03 | 1987-08-03 | Glass-pulling technology and furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024181C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293004C (en) * | 2003-09-19 | 2007-01-03 | Hoya株式会社 | Glass forming body, blank, base plate and optical element mfg. method |
| CN101189194B (en) * | 2005-05-16 | 2011-07-06 | 赫罗伊斯石英玻璃股份有限两合公司 | Method for producing a tube of quartz glass by elongating a hollow cylinder of quartz glass |
| CN111408630A (en) * | 2020-03-26 | 2020-07-14 | 苏州铭德铝业有限公司 | Hot processing method of aluminum profile and aluminum profile prepared by hot processing method |
-
1987
- 1987-08-03 CN CN 87105341 patent/CN1024181C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293004C (en) * | 2003-09-19 | 2007-01-03 | Hoya株式会社 | Glass forming body, blank, base plate and optical element mfg. method |
| CN101189194B (en) * | 2005-05-16 | 2011-07-06 | 赫罗伊斯石英玻璃股份有限两合公司 | Method for producing a tube of quartz glass by elongating a hollow cylinder of quartz glass |
| CN111408630A (en) * | 2020-03-26 | 2020-07-14 | 苏州铭德铝业有限公司 | Hot processing method of aluminum profile and aluminum profile prepared by hot processing method |
| CN111408630B (en) * | 2020-03-26 | 2021-11-02 | 苏州铭德铝业有限公司 | Hot processing method of aluminum profile and aluminum profile prepared by hot processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1024181C (en) | 1994-04-13 |
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