The extension apparatus of fibre parent material
Technical field
The utility model relates to a kind of extension apparatus of fibre parent material, the mother metal ingot bar is extended to mother metal rod than minor diameter, reduce the bending of the fibre parent material rod after extending.
Background technology
Generally speaking, for the mother metal ingot bar being extended to mother metal rod than minor diameter, adopted by being arranged on the mother metal ingot bar thermoplastic of the electric furnace that connects longitudinal type on one side, send in the stove with certain speed by the inlet of electric furnace on one side, while is by the leading section of the outlet clamping mother metal ingot bar of electric furnace, introduce to send into the speed faster speed, and form the outbound course that more reduces the mother metal rod of diameter than the mother metal ingot bar.Extending the mother metal that forms in this way often produces crooked because of the curdled appearance difference of temperature distributing disproportionation in the extension stove and mother metal base.
As its countermeasure, open following extension method in some patent documentations (as: Japanese Patent 09-030825 and 09-030827): measure and be placed in the central axis of the mother metal base on the extension apparatus and the side-play amount between the extension apparatus axle center, and according to side-play amount, the clamping angle of change mother metal base, or one side is by the position of mobile mother metal base, revise the position of mother metal base, extension on one side, make the central axis of mother metal base consistent with the axle center of extension apparatus.
This set locational method of the position control of mother metal base at extension apparatus, can be because hang the part of mother metal base and draw the position of getting extension back mother metal rod part, because the maintenance of well heater exchange etc. can produce the actual effect variation issue.Also have,,, the problem that produces deviation is arranged still even mother metal is controlled at the target location because of producing reason such as wind drift in the peripheral temperature skewness of well heater and lagging material and the stove.
Adopt thisly will be unfavorable for the operability of drawing optical fiber processing procedure and the stability of optic fibre characteristic because of extension has produced crooked mother metal rod, therefore, adopt this produced crooked mother metal rod drawing optical fiber before, must have and revise crooked processing procedure in advance.But, do like this and can reduce production efficiency greatly, so need a kind of mother metal rod that can not make of exploitation to produce crooked mother metal base extension method.
Summary of the invention
The utility model purpose is to provide a kind of extension apparatus of fibre parent material at above-mentioned weak point, adopts this device and method not need to revise the processing procedure of mother metal bending, can directly extend the mother metal rod.
The extension apparatus of fibre parent material takes following scheme to realize.
The extension apparatus of fibre parent material comprises extending to be sent into mechanism's part, extend process furnace, extends feeding machine structure part and measures control section.Extension is sent into mechanism and partly is installed in extension process furnace top, extends the feeding machine structure and partly is installed in below the extension process furnace, and the measurement control section is installed in and extends the process furnace bottom.Wherein extend and send into mechanism's part by servomotor one, drive lead screw one, feed screw nut one, X-Y control unit one and hang chuck and form.Extending process furnace can adopt induction heating or resistive heating mode to heat.Extending feeding machine structure part is made up of with chuck servomotor two, drive lead screw two, feed screw nut two, X-Y control unit two and stretching.Measuring control section is made up of outside diameter measuring device, position measurement device, sinuousness time meter and programmable logic controller PLC.
Described extension process furnace adopts induction heater or resistance heading furnace.
Described outside diameter measuring device adopts commercially available outside diameter measuring device instrument; Described position measurement device adopts commercially available position measurement instrument; Described sinuousness time meter adopts commercially available curvature measurer; It all is the relative high product of measuring accuracy.
Described X-Y control unit one and X-Y control unit two adopt commercially available X-Y numerical control table, NC table, the X-Y numerical control table, NC table have X to planker, Y to planker, come transmission by servomotor by drive lead screw, feed screw nut respectively, by programmable logic controller PLC control adjust fibre parent material base and fibre parent material rod X to, Y to the position, guarantee that the excellent central position of fibre parent material base and fibre parent material is consistent.
The products such as FXZN series Programmable logic Controller (PLC) that described programmable logic controller PLC adopts commercially available MIT to produce.
The extension method of fibre parent material is as follows:
The clamping rod is connected on the both ends up and down of mother metal base respectively, weld in the clamping rod of mother metal base upside with the chuck clamping with hanging, and it is suspended on extends in the stove, carry out the position adjustment of horizontal direction by programmable logic controller PLC control X-Y control unit one, adopt heater heats mother metal base, heating and temperature control is at 2000~2200 ℃, partly draws and gets with extending feeding machine mechanism, is made into the mother metal rod of set diameter;
Mother metal base external diameter in the extension, be heated, fusion, measure the external diameter of the reduced neck bottom of diameter with the outside diameter measuring device, this value that measures as certain value, and the final external diameter of mother metal rod as target control value, control by programmable logic controller PLC and to draw the speed of getting, draw and get speed control at 20~100mm/min, at this moment, measure the external diameter of mother metal base neck upper/lower positions every 2 seconds with the outside diameter measuring device of decussate 2 directions, and as benchmark, the position by programmable logic controller PLC controls X-Y control unit two makes the central position of neck bottom consistent with the central position of outside diameter measuring device.Meanwhile, measure the position of mother metal base every 1 second with the position measurement device, and as benchmark, the position by programmable logic controller PLC controls X-Y control unit one makes the central position of mother metal base consistent with the central position of position measurement device.
Extending the back that finishes uses the sinuousness time meter to measure the amount of bow of the mother metal rod after extending, after amount of bow of measuring and the calculating of direction process, control the position of adjusting outside diameter measuring device and position measurement device by programmable logic controller PLC, carry out to extend next time and prepare.
The extension apparatus of fibre parent material is extending into the mother metal base in the fibre parent material manufacture method of the mother metal rod little than its diameter, the control section of being heated is in vertical direction and extends, wherein the measured deviation value of the X-Y position position-based time meter of mother metal base is adjusted, and extends and sends into mechanism's part and extend the measured deviation value adjustment of the X-Y position of feeding machine structure part based on outside diameter measuring device crossing at right angle direction; Carry out flexural measurement with the rod of the mother metal after extending is online, control the central position of adjusting two positions time meter and outside diameter measuring device automatically according to amount of bow and bending direction.
The extension apparatus of fibre parent material is reasonable in design, compact construction, adopt the utility model extension apparatus can reduce the bending that the mother metal base extends back mother metal rod, therefore needn't just can make the mother metal rod that is used for drawing optical fiber through revising crooked processing procedure as fibre parent material, can reduce the manufacturing cost of optical fiber, enhance productivity greatly.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing:
Fig. 1 is the synoptic diagram of the extension apparatus of the utility model fibre parent material.
Fig. 2 is the bending distribution situation map that extends back mother metal rod by traditional method.
Fig. 3 adopts the utility model to extend the crooked distribution situation map of back mother metal rod.
Mark among the figure: 1, mother metal base, 2, the mother metal rod, 3, the clamping rod, 4, hang and use chuck, 5, the extension process furnace, 6a, X-Y control unit one, 6b, X-Y control unit two, 7, well heater, 8, extend feeding machine structure part, 9, the neck bottom, 10, outside diameter measuring device, 11, position measurement device, 12, sinuousness time meter, 13, extend and to send into mechanism's part, 14, stretch and use chuck, 15, programmable logic controller PLC.
Embodiment
With reference to accompanying drawing 1~3, the extension apparatus of fibre parent material comprises extending to be sent into mechanism's part 13, extend process furnace 5, extends feeding machine structure part 8 and measures control section.Extension is sent into mechanism's part 13 and is installed in extension process furnace 5 tops, extends feeding machine structure part 8 and is installed in extension process furnace 5 belows, measures control section and is installed in extension process furnace 5 bottoms.Wherein extend and send into mechanism's part 13 by servomotor one, drive lead screw one, feed screw nut one, X-Y control unit one 6a and hang chuck 4 and form.Extending process furnace 5 can adopt induction heating or resistive heating mode to heat.Extending feeding machine structure part 8 is made up of with chuck 14 servomotor two, drive lead screw two, feed screw nut two, X-Y control unit two 6b and stretching.Measure control section and form 15 by outside diameter measuring device 10, position measurement device 11, sinuousness time meter 12 and programmable logic controller PLC.
Described extension process furnace 5 adopts induction heater or resistance heading furnace.
Described outside diameter measuring device 10 adopts commercially available outside diameter measuring device instrument; Described position measurement device 11 adopts commercially available position measurement instrument; Described sinuousness time meter 12 adopts commercially available curvature measurer; It all is the relative high product of measuring accuracy.
Described X-Y control unit one 6a and X-Y control unit two 6b adopt commercially available X-Y numerical control table, NC table, the X-Y numerical control table, NC table have X to planker, Y to planker, come transmission by servomotor by drive lead screw, feed screw nut respectively, by programmable logic controller PLC control adjust fibre parent material base and fibre parent material rod X to, Y to the position, guarantee that excellent 2 central positions of fibre parent material base 1 and fibre parent material are consistent.
The products such as FXZN series Programmable logic Controller (PLC) that described programmable logic controller PLC adopts commercially available MIT to produce.
Adopt the extension apparatus shown in the accompanying drawing 1, extend circular mother metal base 1, it is made into the littler mother metal rod 2 of diameter.
The extension method of fibre parent material is as follows:
Clamping rod 3 is connected on the both ends up and down of the mother metal base 1 of external diameter 100mm, useful length 1000mm respectively, weld in the clamping rod 3 of mother metal base 1 upside with chuck 4 clampings with hanging, and it is suspended on extends in the stove 5,6a carries out the position adjustment of horizontal direction by programmable logic controller PLC control X-Y control unit.With well heater 7 heating mother metal bases 1, heating and temperature control is at 2000~2200 ℃, draws with extension feeding machine mechanism part 8 and gets, and is made into the mother metal rod 2 of set diameter;
Mother metal base 1 external diameter in the extension, be heated, fusion, measure the external diameter of the reduced neck bottom 9 of diameter with outside diameter measuring device 10, this value that measures as certain value, and the final external diameter of mother metal rod 2 controlled by programmable logic controller PLC as 40mm (target control value) draw the speed of getting, draw and get speed control at 20~100mm/min.At this moment, measure the external diameter of mother metal base neck upper/lower positions with the outside diameter measuring device 10 of decussate 2 directions every 2 seconds, and, control the position of X-Y control unit two 6b by programmable logic controller PLC as benchmark.Make the central position of neck bottom 9 consistent with the central position of outside diameter measuring device 10.Meanwhile, measure the position of mother metal base every 1 second with position measurement device 11, and as benchmark, the position by programmable logic controller PLC controls X-Y control unit one 6a makes the central position of mother metal base consistent with the central position of position measurement device 11.
Extending the back that finishes uses sinuousness time meter 12 to measure the amount of bow of the mother metal rod 2 after extending, after amount of bow of measuring and the calculating of direction process, control the position of adjusting outside diameter measuring device 10 and position measurement device 11 by programmable logic controller PLC, carry out to extend next time and prepare.
For better understanding, be exemplified below: as seeing in the accompanying drawing 2: the amount of bow of extending the mother metal rod first is a lot of near the 0.4mm of right side and near the rear side 0.4mm.Calculate and control the central position of outside diameter measuring device 10 and position measurement device 11 according to formula and adjust 1.5mm to the right, adjust 1.5mm to rear side.And extend the measurement of the amount of bow of back mother metal rod after extending once more with preceding method, as shown in Figure 3, have more than 90% towards the off-centre of directions X and Y direction ± below the 0.2mm.