US2769598A - Machine for operating upon bobbins - Google Patents

Description

Nov. 6, 1956 R. P. DRAKE ET AL 2,769,598

MACHINE FOR OPERATING UPON BOBBINS Filed Sept. 11, 1952 4 Sheets-Sheet l I jf k/ 7 2 I A 5 I "n /0 43 1 F T 75 w k LL min a 59 YINVENTOR.

Russell f. Dr'a/re, Robert fiBarc/mrdt and Char/ea B. Cranda BY Cou h, M445 ATTORN Y6 Nov. 6, 1956 R. P. DRAKE ET AL MACHINE FOR. OPERATING UPON BOBBINS 4 Sheets-Sheet? Filed Sept. 11, 1952 0/ r/ im m 0 E MOd rN 5/ K V E C T N e A i J ma r pm e Nov. 6, 1956 R. P. DRAKE ET AL 2,769,598

MACHINE FOR OPERATING UPON BOBBINS 4- Sheets-Sheet 3 INVENTOR. Fuss e// P Drake, Bake/z Z Bum/yard: I and Char/6.5 fl C'lafidafl y (Law, fl% m4 ,4 4/;4

A T TORNE Y6 Filed Sept. 11, 1952 Nov. 6, 1956 R. P. DRAKE ET AL 2,769,598

MACHINE FOR OPERATING UPON BOBBINS Filed Sept. 11; 1952 4 Sheets-Sheet 4 INVENTOR. Russ e// P Bra/Ye, Woke/*1 f. flora/mm;

5 p WK BY ATTORN f) 6 Unite States Patent MACHINE FOR OPERATING UPON BOBBINS Russell P. Drake, Caledonia, Robert E. Borchardt, Rockford, and Charles B. Crandall, Loves Park, Ill., assignors to Barber-Colman Company, RocHord, Ill., a corporation of Illinois Application September 11, 1952, Serial No. 309,122 11 Claims. (Cl. 242-35.5)

The invention relates to a machine for operating upon bobbins, and more particularly, bobbins of the filling wind type. In Marcellus Patent No. 2,409,639, dated October 22, 1946, is disclosed a machine for winding bobbins of this type and the present invention has for its general aim the provision of a mechanism, preferably in the form of an attachment to such bobbin winding machines, whose function it is to remove from the butt end of the bobbin any surplus yarn which may have been wound thereon in the operation of the winding machine.

Upon the completion of the operation of winding a bobbin in a machine such as that of the Marcellus patent, the bobbin is released or doffed from its normal winding position in which it is held between a chuck gripping the butt end and a centering slide supporting the tip end, and following such doifing operation the supply thread is sheared from the wound bobbin and clamped in the chuck into which a new or empty bobbin has been placed for the next winding cycle. It sometimes happens that at the beginning of this winding operation a number of turns of yarn are wound upon the butt end of a bobbin in advance of the normal winding operation. The presence of such surplus yarn on the wound bobbin is objectionable because it tends to foul the yarn as it is being unwound from the bobbin, resulting in breakage of the thread and in some instances causing imperfections in the woven cloth as may occur if the surplus end is broken off and not properly removed.

With the foregoing in view, the primary object of the present invention is to provide for the removal in a practical way of any surplus yarn accidentially or unintentionally wound upon the butt end of the bobbin. As disclosed in Peterson Patent 2,696,901, the bobbins produced in the operation of the winding machine are deposited in pockets carried by an endless receiving conveyor and advanced to one end of the machine where they are delivered to a transport conveyor also containing pockets for the reception of the bobbins.

Another object of the present invention is to provide a mechanism for removing surplus yarn from the bobbins which mechanism is especially designed to operate upon the bobbins at a point between the receiving conveyor of the bobbin winding machine and the transport conveyor.

Another and somewhat more specific object concerns a novel mechanism for unwrapping the surplus yarn from a bobbin, withdrawing it as it is unwrapped and finally severing it from the bobbin.

The objects of the invention thus generally stated, to-

gether with ancillary advantages, are attained by the con struction and arrangement set forth by way of illustration in the accompanying drawings wherein:

Figure 1 is a fragmentary side elevational view showing the surplus material removing mechanism interposed between the receiving conveyor of the bobbin winding machine andthe transport conveyor with a driving connection with the receiving conveyor. 1'

Fig. 2 is a fragmentary plan view on a somewhat larger scale.

Fig. 3 is a fragmentary longitudinal sectional view taken approximately along the line 3-3 of Fig. 2.

vFig. 4 is a fagmentary perspective view of a wound bobbin with surplus yarn wound about the butt end of the bobbin and taking its usual form of a number of turns.

Fig. 5 is a fragmentary transverse sectional view taken approximately in the plane of line 55 of Fig. 1.

Fig. 6 is a fragmentary longitudinal sectional view on a scale substantially larger than that of Fig. 3 and showing more particularly the manner in which the wound bobbins are delivered successively to the surplus yarn removing mechanism.

In the preferred embodiment of the invention, the aforesaid mechanism generally designated A is disposed at the delivery end of a bobbin winding machine B and operative upon the removal of the surplus yarn to transfer the bobbins to a transport conveyor C. The discharge end of the receiving conveyor of the winding machine is shown at the left in Figs. 1 to 3. It comprises a pair of endless chains 10 having spaced pockets 11 mounted thereon, the chains passing over sprockets 12.

The unit A comprises in general a hopper 13 (Figs. 3 and 5) opening toward the discharge end of the bobbin winding machine for the reception of wound bobbins from the receiving conveyor 10. In the bottom of the hopper is a discharge opening normally closed by a trap door 14 and below the opening is located a yarn severing means generally designated 15 for removing from the bobbins b any surplus yarn which may be wrapped about the butt end of the bobbin as shown at b (Fig. 4). A controlling cam mechanism 16 is operatively associated with the trap door 14 to release bobbins periodically in timed relation to the operation of the supply conveyor, and this cam mechanism additionally removes the bobbins from the severing unit 15 after removal of the surplus yarn, to the transport conveyor C.

The hopper 13 comprises in the form shown a pair of side walls 17 suitably supported on front and rear frame plates 17a and 1712 (Fig. 5), an end wall 18 and a bottom wall 19 formed by a stationary plate 20, a yieldably supported drop plate 21 and by the trap door 14. The trap door 14 is so disposed relative to the plates 20 and 21 as to form a trough shaped pocket at the extreme bot tom of the hopper in which pocket the bobbin comes to rest for delivery to the severing unit 15 when the trap door 14 is opened.

The side plates 17 respectively guide the butt and tip ends of the bobbin so that in the normal operation bobbins dropped onto the plate 21 roll downwardly into the pocket with the axis of the bobbin extending in a front to rear direction. The plate 21 is yieldably held in closed position by a spring 22 (Fig. 3), this plate being pivoted to swing on a stationary shaft 23. The purpose of this yieldable mounting of the plate 21 is to provide for the contingency that bobbins delivered to the hopper may accidentally become turned in such a Way as to clog the passage to the hopper and thus fail to move properly into the pocket at the bottom of the hopper. Should this occur, the accumulated weight of a number of bobbins on the plate 21 will overcome the tension of plate 22 and allow the bobbins to drop onto the floor or into a suitable container.

The severing unit 15 comprises means for rotatably supporting the bobbins upon release from the hopper, including in the present instance a trough shaped block 24 for the tip end of the bobbin, and a pair of rollers 25 (Fig. 5

mounted on spaced parallel axes immediately below the discharge opening normally closed by the'trap door 14.

The rollers 25 are operatively connected with the receiv-:

' transportation conveyor C.

' shaft 31, and the other arm 7 and 31, which carry, the guide plates 28 by the cam 43, the

V winder, filling-wound bobbins are the hopper 7 '3 ing conveyor 10 of the winding machine in a manner which will presently appear. As the bobbin is rotated,

' the loose or free end of the surplus thread is drawn downwardly by suction means 25 and the withdrawn strand is'acted upon by a second pair of rollers 27 provided with relatively sharp interstrand to an unobjectionable length. T o'insure free pas: sage of air between the severing rolls 27 the teeth at opposite sides of the rolls are preferably milled off as shown Figs. and 6. V V 7 I Upon discharge frorn' the hopper the bobbins pass downwardly between a pair of plates 25 and 29 respectively mounted on shafts 30 and 31 (Fig. 3), the tip ends of the bobbin being guided by'a stationary plate 32 (Fig. 5) carried by a bracket 32a and the butt ends by' a guide member 33, the surfaces being appropriately'inclined so as to direct the bobbin into position with the butt ends resting upon the rollers 25 with the tip ends supported in the trough shaped block 24 which are supported by inturned portions 35 of the plate 32. This construction provides supports for the tip and butt ends of the bobbins so as to support the yarn ma'sses clear of contact of any supporting surface. i

The cam means 16 has for its primary purpose the periodic operation of the trap door 14 and the actuation of the plates 28 and 29 following theremoval of the surplus'yarn' from the bobbins, to deliver the latter to the In the present instance the cam means 16 is driven from the winding machine through a chain and sprocket connection with the receiving conveyor 10. Thus, the shaft 37 of'the receiving conveyor has fast/thereon a driving sprocket 38 (Fig. 2) fora chain 39 running over sprockets 40 and 41 (Figs. 3 and 5) Sprocket 40 is mounted on a sub shaft 42 on frame plate 17b, carrying a cam 43.

Cam 43 is a two-lobed cam having a follower 44 (Figs.

'3 and 6) normally urged against the cam by-a spring 45;

Follower 44 is fast on a shaft carrying the trap door 14. A second follower 47 is urged cam. This follower is fast on a rock shaft 47a having rigid therewith a bell crank 49 (Fig. 6), which is connected by a link 5% and an arm 51 with the of which is connected by a link 52 with an arm 53 fast on the shaft 30. Shafts 30 and 29, are thus arranged for operation in unison arrangement being such that the plates 28 and 29 are first operatedbythe cam, the formenengaging with the bobbin to shift it onto a downwardly inclined plate 54 for delivery to the transport conveyor, and then upon return of the plates to normal position by the spring 48 as permit-ted by the cam, the follower 44 is operated to open the trapdoor and release the next bobbin to' the severing unit 15. As i shown, the transport conveyor Gcorhpriss a plurality of pockets 55 (Fig. 3) into which the bobbins are successively delivered, it being understood that this conveyor is advanced 'in proper timed rela-,

tion torthe main receiving conveyor; V

Chain 39 is also utilized to drive the bobbin supporting rollers 25fof the severing unit, as shown in Fig. 5. Sprocket 4-l has a gearing connection 57 witha pair of shafts SSreSpectiVely carryingrthe rollers'ZS; The severing rollers 2 7 are preferably driven directly by a separate 7 ,motor59 connected by a shaft 60 with one of the ,two j rollers 27.

By wayof summary, v

delivered one by one to 13, and. are successively'directed thereby to 15; The earn actuatedtrap door, 14

the severing unit 'at' the botto rn' of the hopper constitutes in effect an escapeby a spring 48 against the:

one arm of V in th e operation of the. bobbin 7 ment mechanism controlled by the cam 43 so th at the bobbins are released to the severing means in timed re- V meshing teeth which operate to break or chew off the lation to the operation of the winding machine and more particularly its receiving conveyor '10. delivered to the severing unit are supported for rotation in a direction to unwind from the butt ends ofthe bobbins any surplus yarn which may have in the operation of the winding machine. Coincidentally with such rotation of each bobbin, the unwrapped strand is withdrawn and presented to the severing means, namely, to the two rolls 27 with sharpened intermeshing teeth op-' erating to chew off the strand to an unobjectionable length. Upon the lapse of a predetermined time interval following the deposit of the bobbins onto the supporting V and rotating'means, theyare shifted laterally. by the op- I eration of the gm'de'plates 28, '29, again under the control of the cam 43, the laterally shifted bobbins being delivered to the pockets 55 of the transport conveyor C. We claim as our invention;

1. An apparatus for operating upon filling wound bobbins comprising, in combination, means for rotating a bobbin in a direction to unwrap a strand of yarn wound upon its butt end, a pair of rolls disposed below said bobbin rotating means and ha ving intermeshing' teeth, and continuously operating means: to exert a force other than gravity on the unwrapping strand to draw the same away from the bobbin and present it to said rolls to cut 7 or break off the strand from the bobbin.

2. The combination of a bobbin winding machine hav-- ing a conveyor for receiving filling wound bobbins, a

hopper for receivingthe bobbins ,as they are discharged by said conveyor, bobbin supporting and rotating means,

means operative in timed relation to said conveyor for from said hopper to said the last mentioned means,

supporting and rotating means,

' being operative to revolve the bobbins in a direction to i .and means for presenting the unwrapping strand to said V rotating rollers unwrap strands of yarn wrapped about the butt ends there-T of while leaving the filling intact, strand severing means,

severing means. 7 V

3. An apparatus for operating'upon filling wound bobbins comprising a hopper, a conveyor for delivering bobbins one by one to said hopper, means for unwrapping from the bobbins strandsof eXcessyarn wound upon the butt ends thereof while leaving the filling on thebobbins intact, and means operative in timed relation to said con-V veyor to deliver bobbins successively to said surplus strand removing means. 7 i V 4. In anapparatus for operating combination of a hopper forreceiving filling wound bobbins, said hopper having a' discharge opening and a 010 removing excessyarn wound ends of the bobbins including a pair of sure therefor, means for upon the butt 7 disposed side by side for supporting'and rotating the successive bobibns delivered on top of the rollers, and cam means operative first to remove a bobbin from position on said rollers and 'then to actuate said closure means to deliver a succeeding bobbin from the hopper onto the rollers.

5. Apparatus for operating upon filling wound bobbins, having, in combination, means for supporting and rotating a bobbin to unwrap a strand of yarn wound on; v e means defining a suction chamber maintainedunder a vacuum and disposed adjathe butt end, of the bobbin,

cent the rotating bobbin to draw the unwrapped end' away from the bobbin, and'a pair of rotatable rolls disposedbetween said bobbin and said inlet and having intermeshing teeth shaped to cut :or break oif the unwrapped strand frOmthbobbin. ,7 o

7 ,6, In'apparatus for removing'the surplus yarnwound "upon the butt end of'a filling wound bobbin, the combination of, ai pair ofvrollers-rotatable about adjacent horizontal axes and adapted toreceive and-support the butt end of a bobbin, a second support axially spaced from V said rollers to engage'iand, support the tipof the bobbln Bobbins thus j been wound thereon 7 upon bobbins, the

engaging said rollers, the filling of the bobbin being disposed between and out of contact with said rollers and support, means for delivering bobbins one by one sidewise and downwardly onto said rollers and support, means for turning said rollers in a direction to unwrap the yarn from the butt end of the supported bobbin, a suction chamber maintained under vacuum and having an inlet spaced below the supported bobbin to draw away the yarn unwrapped from said butt end, and means between the bobbin and said inlet and engageable with the unwrapped yarn and operable to draw the yarn downwardly and break oi the same down to the filling of the bobbin.

7. In apparatus for removing the surplus yarn Wound upon the butt end of a filling wound bobbin, the combination of, means for supporting and rotating the bobbin including a pair of rollers rotatable about adjacent horizontal axes and adapted to receive and support the butt end of a bobbin and a second support axially spaced from said rollers to engage and rotatably support the tip of the bobbin engaging said rollers, means for delivering bobbins one by one onto said rollers and means for turning said rollers in a direction to unwrap the yarn from the butt end of the supported bobbin, a suction chamber maintained under vacuum and having an inlet spaced below the supported bobbin, and rotary elements having intermeshing teeth and disposed between the bobbin and said inlet to engage and break 01f said yarn after unwrapping thereof.

8. In apparatus for removing the surplus yarn wound upon the butt end of a filling wound bobbin, the combination of, means for supporting and rotating the bobbin including a pair of rollers rotatable about adjacent horizontal axes and adapted to receive and support the butt end of a bobbin, means for delivering bobbins one by one onto said rollers and means for turning said rollers in a direction to unwrap the yarn from the butt end of the supported bobbin, a suction chamber maintained under vacuum and having an inlet spaced below the supported bobbin, and rotary cutting elements having intermeshing teeth and disposed between the supported bobbin and said inlet to engage and break ofi said yarn after unwrapping thereof.

9. In apparatus for removing the surplus yarn wound upon the butt end of a filling wound bobbin, the combination of, means for supporting and rotating the bobbin including a pair of rollers rotatable about adjacent horizontal axes and adapted to receive and support the butt end of a bobbin, means for delivering bobbins one by one onto said rollers and means for turning said rollers in a direction to unwrap the yarn from the butt end of the supported bobbin, a suction chamber maintained under vacuum and having an inlet spaced below the supported bobbin, means disposed between the bobbin and said inlet and operable to engage and break off said yarn after unwrapping thereof, an ejector movable laterally across and above said rollers to roll the bobbin sidewise and horizontally 011? from the rollers, and means for operating said ejector intermittently.

10. In apparatus for removing the surplus yarn wound upon the butt end of a filling wound bobbin, the combination of, two supports for receiving and supporting the butt and tip ends of the bobbin beyond the filling thereon, one of said supports including a pair of rollers rotatable in a direction to unwrap a strand of yarn from said butt end, means for delivering bobbins one by one onto said supports, a chamber maintained under vacuum and having an inlet spaced laterally from the supported butt end of the bobbin, and means disposed between the bobbin and said inlet and operable to engage and break off said yarn after unwrapping thereof.

11. In apparatus for removing the surplus yarn wound upon the butt end of a filling wound bobbin, the combination of, means for supporting and rotating the bobbin in a direction to unwind said surplus yarn down to the end of the filling on the bobbin, said means including a rotary drive member engageable with an end of the supported bobbin at a point outwardly beyond said filling, a suction chamber maintained under vacuum and having an inlet spaced below the supported bobbin, rotary elements having intermeshing teeth and disposed between the bobbin and said inlet to engage and break ofi" said yarn after unwrapping thereof, and mechanism including a rotary element engageable with the yarn as it is unwrapped from said butt end and operable to draw the yarn away from the bobbin and finally break off the yarn adjacent said filling.

References Cited in the file of this patent UNITED STATES PATENTS 1,073,388 Belz Sept. 16, 1913 1,175,710 Colman Mar. 14, 1916 1,227,754 Colman May 29, 1917 1,268,684 Colman June 4, 1918 2,070,193 Alderman Feb. 9, 1937 2,238,923 Abbott Apr. 22, 1941 2,443,002 Giffin et al. June 8, 1948 2,458,326 Wilson Jan. 4, 1949 2,499,810 Alix et a1. Mar. 7, 1950 2,611,547 May Sept. 23, 1952 FOREIGN PATENTS 714,038 France Aug. 24, 1931

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