US2115404A - Spinneret polishing machine - Google Patents

Description

April 26, 1938'.

av-sPAANBRo-EK SPINNERET POLI SHING MACHINE Original Filed June 11, 1936 l' Patentedn Apr. 26, 1938 by wear or damage.

UNITED A Gerrit Spaanbroek,

American Enka Corporation,

STATES PATENT- olf-FICE sPmNEaET PousmNG AMACHINE poration of Delaware Original application J 84,757. 1937, Serial No. 141,807

Divided and 5 Claims.

This application is a4 division of my application Serial Number v84,757 flle'd ,June`11, 1936.- n relates to spinnerets The present inventio adapted for use in the manufacture of artificial silk, and more particularly to a machine for polishing spinnerets which have become impaired A normal spinneret as employed in the articial silk industry is in the form of a small cupdie, the base plate of whic minute o tion may is these thus forme subjected to conditions the solution comprise the ments used in the formation Due to the severe co nerets are normally subjec operations, they must be const which will withstand long and hard usag shaped h is perforated with A penings through which a cellulosic solube forced as individual ne streams. It d fine streams which whento cause coagulation of multiplicity. 'of laof artificial silk yarn.

nditions to which the spinted during spinning ructed of materials e with the necessity for the replacement thereof being maintained at a minimum.

various chemicals during use.

Attempts have been made able spinnerets of corrosionsuch as glass and bakelite, but the only materials found to be generally satisfactory are the noble l A adaptable for poli metals and their alloys.

that metallic spinnerets becomey The spinnerets must to manufacture lsnitresistant non-metals -It is found, however,

distorted by the pressure imposed in use. and further that the minute openings in the clogged by incrustations formed from the spinning it has been the ,practice to spinnerets and to reca nerets inthe desired c ondition.

spinnerets become and agglomeratio'ns solution. Heretofore melt down damaged st the metal to form spin- The past practice involving' the reconstructio of impaired spinn sary because of th nerets and the fact that the -so minute. Reconstruction sential in order that thespin precision required in the pro articial silk.

This `invention has as an of a device for polishing erets was thought to be necese fragile character `of the spinopenings therein are was considered es- I nerets have the exact duction of high grade,

object the provision and removing a coating 'previously applied to spinnerets'during'former reconditioning stages.

- It is a further object of the present inventionk to providel an improved polishing machine especially that hav/e become impaired Other objects and advan shing the faces of spinnerets during usage.

tages of this inven- Asheville; N. C., assignor to (Cl. 51-124i tion willbe apparent from the following detailed descriptionwhen considered in connection'with the accompanying d'awing wherein:

Figure'l is a top plan view of a spinneret facepolishing mechanism; and

Figure 2 is a side elevational view of the-polishing machine shown in Figure 1.

Referring to the drawing in detail, the apparatus for polishing the spinnerets is shown and includes a rigid frame-work 10 having spaced 10 upper and lower beds 1|-1I inter-connected by side supports -12. The apparatus polishes the spinnerets by rotating them individually, pref senting them to a rapidly rotating polishing element 13 and simultaneously oscillating the spin- 15 nerets transversely of the surface of the rotating polishing element. Said apparatus is driven from any suitable source of power (not shown) through ay belt 14 whichdrives a pulley 16 fast to a centra). shaft 11 suitably journaled in upperand 20 lower beds 1I. Above upper bed 1| polishing element 131s secured to the upper end of shaft 11.

Polishing element. 13 consists of a circular plate 18 covered with any suitable durable polishing fabric such Aas canton flannel xed to the exterior 25 fright vside out, and dressed with a. suitable polishing medium such as chrome-oxide suspended in' tallow. It will be understood that when pulley 16 is rotated circular plate 18 will be drivenat the same rate. f l

Rotation ofthe spinnerets is obtained throughl :worm 8l on shaft 11 in driving engagement lwith .worm wheel 82 fast to horizontal shaft 83. The shaft 83 isvcarried by suitable bearings 85 fixed on thelower bed1l. At one end, shaft 83 is pro- 35 vided Withbevel gear 86 meshing with,v bevel gear 81 secured to rotatable vertical shaft 89 on which is fixed sprocket wheel 90. Atl spaced points about 'the polishing element 13-rotatable vertical shafts 89a, 89h and 89o are disposed, journaled in 40 suitable bearings inthe beds 1|'. Adjacent the lower end said shafts are provided with' sprocket wheels a, 90b and 80e respectively,4 which are interconnected by continuous chainA 9| whereby,

fitwill be observed rotation of bevel gear 81 45 d 88e to be driven from 'v v 83, the shaft may be connected to drive only' Pivotall vertical rods |05 engage the under side v Sprocket wheels 91, 91a, 91h and 91oI keyedto the shafts 89, 89a, 89h and 89e are interconnected by chains 98 with sprockets |00 keyed to the spinneret shafts 96. Sprockets 91 and |00 have spacing hubs |0| which maintain them in horizontal alignmentiduring polishing, the sprockets |00 be' ing normally urged to alignmentv by expansion springs |02 retained thereon. Spinneret holders |03 are secured to the lower end of-the shafts 96. It will be observed that if the polishing plate 13 is rotated at any rateof speed the spinneret holders I 03 will be driven at a corresponding but lower rate of speed through worm 8|, wheel 82, shaft 03,' bevel gears 06 and 81, vertical shaft 09,

sprocket chain 9|, sprocket wheel 91. sprocketv chain 98 and spinneret shafts90.

In order to' insure optimum polishing conditions and to utilize substantially the entire sur-l face of polishing element 13, it is proposed to y cause the spinneret holders to traverse a constantly changing pathfwith respect thereto, and

this is accomplished by continuously oscillating horizontal arms 94 to carry the spinneret holders in an arcuate path between the axis and periphery of the polishing element. Mechanism for accomplishing this movement includes a horizontal spider |04 freely oscillatable about the main shaft 'I7 `as an axis immediately beneath upper bed 1|.

of horizontal arms 94 and extend through varcuate slots v|06 formed in the upper bed 1|. The projecting end of each therebeneath is fitted with a vpivotally connecting link '|08, the opposite end ofwhich is pivotally connected to the under side of spider arm I'| 0. 'Ihe `relationship of theoscillating elements described is such that when the spider is rocked about the shaft 11 the arms 94 connected thereto by means of rods |05 and links |08 will be oscillated across the polishing element 10, the extent of saidoscillation being limited by arcuate slots' |06.

Rocking of the spider |04 is I.

through `'power derived from the belt- 14 and central shaft 11, applied through the horizontalshaft 93 which carries a beveled gear keyed thereto on the end opposite bevel gear 96. The bevel gear IIIengages bevel gear II2 keyed -to verticalshaft III supported for rotation in fixed bearing .I I4. Secured on its upper extremity the shaft Iltis provided with disk III having a prol jectlng pin I I1 eccentrically disposed with respect movement vslot I I0.

' tion is adopted, it win also enable' the obtaining to the shaft H3. The pin ||1 rides from end to end of straight slot I|8 cut inthe spider |04. It will be observed that continuous rotation of the shaft ||3 'as driven from theshaft" causes rotation oi' diskil to rock the spider'throu'g'h Preferably the gear III is larger than the gear 101 in "order that there might be obtainedV unbalanced equilibriuin of the cooperating parts described, vsuch coaction producing, for example, driving, of the polishing disk at a speed of ap# proximately 2,000 B. P. M. while the spinneret oscillated approximately 40 times per minute.

In lieu of driving the gear II! from the shaft the gear 01, it being feasible to drive gear |I2 directly from the main shaft 'I1 `by connecting a suitably geared shaft between ythe worm II and the gear IIZ. Whenthis modified construcof different speed ratios between the cooperating parts as described above in order to even' of pin I |1 in opposite directions along distribution lof wear on the polishing element. Suitable arrangements lof gears andV shafting, and belts and pulleys may be substituted for the chain and. sprocket drive described.

Operation of these mechanisms has been found 'to insure that all portions of the face of the spinnerets carried on the holders |03 are subjected to the uniform action of the polishing (agent so'that at the endlf thepolishing operation the face of the spinneret will have been 1. A polishing machine particularly adapted y for the polishing of spinnerets during the reconing disc above the platform iixedly supported vupon a rotatably mounted shaft for lrotation therewith, said shaft extending ybelow the `platform, a plurality of armssupported at their outer vends upon rotatably mounted shafts with their" inner ends extending over the polishing disc, a

rotatably mounted spinneret holder at. the inner.

end of each arm, a plate mounted under the platform extending adjacent Veach of the arms, linkage connecting the plate with respective arms,

means connecting each spinneret holder with theshaft about which its respective arm is pivoted for rotating the holder upon rotation of the shaft, and means for concurrently driving the disk at a high speed, the spinneret holders at a relatively low speed, through the arm supporting shafts and connecting means and for causing the arms by movement ofthe plate to oscillate slowly with the spinnerets mounted thereon contacting the lA-polishing machine comprising a platform, a polishing disc above-the platform iixedly supvported on a rotatably mounted shaft for rotation therewith, a plurality of arms supported at their ends upon rotatably mounted shafts with the inner end of each arm, a plate mounted 14.5' their inner ends extending" over the disc, a rotatably mounted spinneret holder at under the platform extending adjacent each of' the arms, linkage connecting the plate .with re-vv spective arms, means connecting each spinneret holder with the shaft about which its respective arm is pivoted for rotatirrgthe holder upon rotation o'f the shaftan'd means for concur-l rently driving thedisc at a high speed, the spinneret'holders at a relatively low speed, through the medium of the arm supporting shaiftsan'd` connecting means, and for causing the arms by vmovement of the plate to oscillate slowly with the spinnerets mounted thereon contacting the disc from immediately adjacent its center to sub- 'means-for the arms and the disc being constructed to oscillate the arms at a'predetermined speed with respect to the speed of rotationeof the disc, such that each spinneretis contacted substantially with all portions of the disc prior to con'- tacting the disc in a path identical totliat pre'- viously traversed.

`3. n polishing machine particularly adapted ditioning thereof comprising a base andv a platform spacedthereabove, a polishingdisc above the platform iixedly supported upon a rotatably mounted shaft vfor rotation therewith, said shaft lvstantially the periphery thereof, said driving .-"Ioy for the polishing of spinnerets vduring the recon-Y 20 ditioning thereof comprising a platform, a polishextending -into the space between the base platform, a plurality of 4arms supported at their 'outer ends upon rotatably mounted shafts with their inner vends extending over the polishing disc, a rotatably mounted spinneret holder at the inner end ofl each arm for lightly urging a spinneret mounted thereon into contact ywith the disc,V means connecting each spinneret holder with the shaft about which its respective arm is pivoted for rotating the holder upon rotation of the shaft, means for concurrently driving the disc at high speed, the spinneret holders at a relativelyl low speed, through the medium of the arm supporting shafts and connecting means and for causing the yarms to oscillate slowly with the spinnerets mounted thereon contacting the disc from immediately adiacent its center to subl.stantially the periphery thereof, said driving means for the arms and the disc being constructed to oscillate the arms at a predetermined .speed with respect `to the speed' of rotation of the disc such that eacH spinneret is contacted substantially with all portions of the disc prior to contacting the disc in a path identical to that previously traversed. l

4. Apolishing machine particularly adapted for the polishing of spinnerets during the reconditioning' thereof comprising abase and a platform spaced thereabove, a polishing disc above the platform iixedly supported upon a rotatably mounted shaft' for rotation therewith, `said shaft extending into the space betweenv the base and platform,- a plurality of arms supported at their outer ends upon rotatablymounted shafts with their inner ends extendingover the polishing disc, a rotatably mounted spinneret holder at the inner end of each arm for lightly urging a spinneret mounted thereon into contact with the disc, a plate mounted under the platform extending adjacent each of the arms, linkage connecting the platewith respective arms.means connecting each spinneret holder with the shaft about which its respective arm is pivoted for rotating the holder upon rotation of the shaft, and means the 'spinneret holders at a relatively `low speed, through the medium of the arm shafts and for concurrently driving'the disc at a highspeed,

and connecting means and for causing the arms by movement of the plate tooscillate slowly with the spinnerets mounted thereon contacting the disc from. immediately adjacent its center to sub- `stantially the periphery thereof, said driving vmounted shaft for rotation therewith, said shaft extending into the space between the -base and platform, a plurality of arms supported at their outer ends upon rotatably mounted shafts with ltheir inner ends extending over the polishing disc, a rotatably mounted spinneret holder at the inner end of each arm for lightly Aurging a spinneret mounted thereon into contact withthe disc, a freely rotatable spider mounted under the platform and linked to each of the arms, means connectingfeach spinneret holder with the shaft about which" its respective arm is pivoted for rotating the holder upon rotation of the shaft,

i and means for concurrently driving the disc at a -high speed, the spinneret holders at a relatively low speed, through the medium of thel arm supporting shafts 'and connecting means and for causing the arms by movement of the spider to oscillate slowly with the spinnerets mounted thereon contacting thetdisc from immediately ;ad

jaoentits center to substantially the periphery thereof, said driving means for thearms and the disc being constructed to oscillate the arms at a predeterminedfspeed with respect to the speed of rotation of the disc such that leach spin- ,Ineret is contacted substantially with all portions of the disc prior to contacting the disc in a path identical to that previouslytraversed.

amari' sPAANBRoEK, V

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