US2747806A - Machine for operating upon bobbins - Google Patents

Description

May 29, 1956 R. E. BORCHARDT MACHINE FOR OPERATING UPON BOBBINS 4 Sheets-Sheet 1 Filed March 50, 1953 I a 4 a. w

INVENTOR.

Robert E. Borchardt JW ni 0% ATTORNEYS N Ni M y 1956 R. E. BORCHARDT MACHINE FOR OPERATING UPON BOBBINS Filed March so, 1953 4 Sheets-Sheet 2 INVENTOR. Robert E. Bore/vard ATTORNE Y6 May 29, 1956 R. E. BORCHARDT MACHINE FOR OPERATING UPON BOBBINS 4 Sheets-Sheet 3 Filed March 30, 1953 l INVENTOR.

Robert E. Borchardz:

ATTORNEYS May 29, 1956 R. E. BORCHARDT MACHINE FOR OPERATING UPON BOBBINS 4 Sheets-Sheet 4 FiledMarch 50, 1953 INVENTOR. Robert .E Borchardt BY Qqfigwiua (411A ATTORNEYS United States Patent MAGHJNE FOR OPERATING UPON vBOBBINS Robert E. Bprchardt; Rockford, 111., assignor to Barber- CdlmzihCOrnpany, Rockford, Ill.,-acorporati0n-of Illinois Application-March 30, 1953,-Serial No. 345,562

Claims. (CL 242-49) The invention pertains -to a machinefor. operatingupon bobbins,- of the type disclosed in copending application of Burt A. Peterson serial No. 169,636, filed June 22, l9-50,-now Patent-No. 2,696,90.1,-and the general object of the invention is to provide a carrier for transferring wound bobbins successively from one conveyor to another, with provision forreleasing each of: the bobbins following, removal thereof from the first conveyor to an intermediately'positioned mechanism for the performance thereon of a desired operation,- and' then restoring the same tothe carrier for delivery to the second conveyor.

A further object is: to provide in a machine of the foregoing character a surplus yarnremoving mechanism disposedbetween the two conveyors, in-combination with acarrier operative in timed relationship'to the actuation ofthe'co'nveyorsto effect the transfer of'the' woundbobbins successively from: the first conveyor to A the aforesaid mechanism, and then to the second'conveyor.

The: mechanism for removing surplus yarn from the bobbins is of the general character disclosed'and claimed in copendingapplieation of Russell P. Drake etall, Serial No: 309;122, filed September 11, 1952. The purposeof thismechanism is to remove from the bobbinsanysurplus yarn which may be wound upon the butt ends of the bobbins so as to-prevent the'same from interfering'with the proper unwinding of the yarn from the bobbins; Because the surplus yarn tends to assume the form of loops on t the bobbins, this 1 mechanism is sometimes it hereinafter referred to,. for the sake of brevity, as a loop cutter.

The objects of the invention thus' generally stated; together with other andancillary advantages, are attained by the construction and arrangement shown by way of illustration in the accompanying drawings, in which:

Figure 1 is a'fragmentary front elevational-viewshowing the improved bobbin transfer mechanism or carrier and an associated surplus yarn removing mechanism or loop cutter interposed between the receiving conveyor of the winding machine, to whichthe bobbins are delivered upon the completion of the: winding operation, and a condensing conveyor to which the bobbins are delivered followingtheremoval of surplus yarn therefrom;

Fig. 2 is a fragmentary plan view.

Fig: 3 is a" fragmentary vertical sectional view taken approximately in'lthe plane of line 3 -3 of Fig. 2.

Fig. 4 is a fragmentary vertical sectional view taken approximately in the plane o'f 'lin'e44' of Fig; 1.

As fully'disclosedin said Peterson. application, a bobbin windingmaehinegenerally designated lflhas a plurality of equidistantly spaced windingunits 11 (one only being shown by which a plurality of bobbins b are wound simultaneously. Uponithe completion ofa predetermined winding cycle, the wound bobbins are discharged into receptacles 12 on an endless conveyor 13, the receptacles being spaced apart accordingto the. spacing of the winding units. A second conveyor 14, to which the bobbins are to be transferred, is similarly equipped with bobbin receptacles 1'5", but in this instance the receptacles are arrangedin closely spaced relation.- according to, the space the bobbins are ultimately transferred. in the manner disclosed. in Peterson PatentNo. 2,543,931.

In accordance with the: present:invention a-carrier 16 is. provided between the? two conveyors,- together. with an associated mechanism for operating upon the bobbins, in this; instance a loop cutter generally designated 17, and said carrier istoperative in-timed. relation to'the'twov conveyors toseflect the transfer of the wound bobbins successively from the receptacles 12- of the receiving conveyor 13,- first to the loopeutter. 17.: and then'to the receptacles 15 of the'condensing; conveyor 14,- the bobbins being; released to the loop cutter where they remain for a predetermined. time interval and then are restored to the carrier for delivery to the condensing-conveyor.

The receiving, conveyor comprises" a pair. of endless chains 18 operating, upon sprockets 19 and. carrying. the receptacles: 12; The. conveyor is driven by an electric motor 20 (Fig; 1) throughthe medium of-a clutch 2-1- controlledby; the cycling mechanism. (not-shown)= of the bobbin winding. machine proper, as fully set forth in said Petersonpatent; Similarly, the condensing conveyon comprises. a pair: ofendless chains 22 supported by sprockets 23 (Fig. 3) and carrying the receptacles15= This-conveyor is. driven in timedrelation to the receiving conveyor. In this instance, a shaft 24' carrying. the sprockets- 23 at: one end of the condensing conveyorcarries the. drivenelement 25. (Fig. 2) of at Geneva mechanism 26. The driving: element 27 of-- the mechanism. is-in turn fast one shaft 28 (Fig; 3) parallel with the sprocket shaft. 24. Shaft 28 alsocarries asprocket 29connected' to the receiving conveyor by a chain and sprocket drive mechanism consisting of a'chain30'extending over sprockets 31g 32', and 33, aswell as over a sprocket. 19a rigid with the sprocket: 19 of the: receiving conveyor. Due to."- the presence in; this driving, connection between the conveyors of. the Geneva mechanism 26; the condensing. conveyor is driven with a step-by step motion.

The carrier 16 by which the bobbins are transferred from. the receiving conveyor to the condensing con: veyor, withapause. at. the: loop-cutter 17, is preferablyv of the rotary type set forth in-.said Peterson application.- SerialNo. 169,636. lt'comprises a pair. of clamping members with means operative intermittently to actuate the member. so; as to grip and release each of the bobbins successivelypresented to the carrier by the receiving-conveyor. As: shown, the clamping; members arein the form of-disks134vandr35-having peripheral bobbin gripping portions traveling inan arcuate path intersecting. the path of the bobbinsin their passage around thedischarge endof the receiving conveyor. The disks- 3'4': and 35, are mounted upon a shaft 36 spaced apart a distance approximatelyeorresponding to the length of the bobbins b. Also rigid with the. shaft is a sprocket 37. engaging with the chain 30 which drives the condensing conveyor sothat theca'rrier is-driven-continuously with the receiving conveyor 13.

Theclamping', disk 35 of the carrier isfast on the shaft 36 while' the disk 34- is keyedthereon for axial sliding movementito'wardz and from the diskv 35,. the arrangement being such that in av relative approaching or closing" movement of the disks the bobbins are gripped; and in the relative separating or opening movement of the disks the bobbins are released.

The aforesaid opening and' closing movements of. the carrier disks is achieved by cam means (Fig. 2') comprising a disk type: cam 38" fast on. the shaft and coacting with a follower. roller 3921 on one arm of' a bell crank 39. The other arm of the bell crank engages with a Patented; May 29, 1956 3 grooved collar 40 rigid with the disk 34 and urged by a spring 4011 (Figs. 2 and 4) in a clamping or closing direction. Bell crank 39 is pivoted on an arm 41 (Fig. 2) rigid with a bracket 42 which, in turn, is carried by a frame member 43. The bracket 42 also provides a support for the shaft 28 as well as for a shaft 44 which supports the idler sprocket 32.

It will be apparent that the cam 38, being fast on the shaft 36, operates in the rotation of the carrier 36 to actuate the clamping disks for the purpose of gripping and releasing the bobbins. Preferably, the cam 38 is composed of two plates secured together for relative circumferential adjustment by a clamp screw 45.

In the arrangement shown the carrier and its control cam are driven through a half revolution during the movement of the conveyor 13 a distance corresponding to the spacing of the pockets 12 thereof. Accordingly, the cam is formed with two diametrically opposed sets of actuating surfaces respectively consisting of recesses 46 and 46a separated by lobes 47 and 47a. In general, the arrangement is as follows: The clamping disks are separated or opened by the cam 38 so that the disks are conditioned to receive between them a bobbin in the receptacle 12, and at the same time to release previously gripped bobbins, one to the loop cutter 17 and the other to a receptacle of the condensing conveyor 14. Following such opening movement a relative approaching or closing movement is imparted to the disks so as to grip the next bobbin presented to the carrier by the receiving conveyor and also to grip a bobbin which has been restored to the carrier from the loop cutter in a manner which will presently appear, the bobbins thus gripped being then advanced by the carrier to the loop cutter and condensing chain respectively.

As shown in Figs. 3 and 4, one of the clamping disks (herein, the disk 34) is preferably provided with two diametrically opposed pairs of yieldable bobbin gripping elements in the form of spring plates 48, with the plates of each pair spaced apart according to the spacing of the receiving and delivery points. These plates have free end portions normally offset inwardly into the space between the disks for the purpose of resiliently engaging and holding the bobbins. As shown, the leading edge portions 49 at the free ends of the plates 48 are bent outwardly into notches 50 in the disk so as to form cam surfaces insuring that the bobbins will not catch on the edges of the plates, but will move freely into proper position between the disks.

As above indicated, the loop cutter 17 is the general type disclosed in said copending application of Drake et al., Serial No. 309,122. Preferably, it comprises (Figs. 3 and 4) a trough-like pocket 51 having a bottom slot 52 at the end thereof which receives the butt ends of the bobbins. Beneath the slot is a housing 53 having a pair of cutter elements 54 and communicating with an ex haust duct 55. The cutter elements 54, as in said Drake et al. application, are cylindrical in character, being provided with inter-meshing teeth which not only serve to provide a driving connection between them, but which additionally serve to remove the surplus yarn by a break ing action.

While in the pocket 51 the tip ends of the bobbins are supported in a notched holder 56 and the butt ends rest upon a continuously rotating driver 57 for revolving the bobbins, the direction of rotation being such as to unwind the surplus yarn from the butt ends of the bobbins and permit it to be drawn by suction into the cutter elements 54. The latter are driven by a separate electric motor 58 having a drive shaft 59 connected with one of the elements.

The bobbin rotating driver 57 is herein shown (Fig. 4) in the form of a cupped wheel rotatable on an inclined axis and lined with an annular friction element 60 the lower portion of which faces upwardly for engagement with the butt ends of the bobbins. This driving wheel 57 is fast on a shaft 61 supported in a bracket 62 and having a pulley 63 connected by a belt 64 with a driving pulley 65. T he latter is mounted on a shaft 66 (Fig. 2) having a chain and sprocket connection 67 with the drive shaft 28 for the condensing conveyor 14.

For restoring the bobbins to the carrier following operation thereon by the loop cutter 17 the condensing conveyor drive shaft 28 is equipped with a cam 68 arranged to operate a pair of lifter fingers 69 and 70 respectively underlying the tip and butt ends of the bobbins when supported in the loop cutter pocket 51. Cam 68 has a roller follower 71 carried by an arm of a yoke 72 journaled on sprocket shaft 24 of the condensing conveyor. As shown in Fig. 4 the holder 56 for the tip ends of the bobbins is spaced from the pocket 51 to accommodate the lifter finger 69, while finger 70 overlies the bottom of the pocket adjacent the bobbin drive wheel 57. The right hand wall of the pocket, as seen in Figs. 2 and 3, preferably extends laterally to form a guard plate 73 overlying the end of the condensing conveyor. This plate, and the adjoining wall of the pocket, are appropriately slotted for the passage of the lifter finger 70.

Operation In the relation of the parts shown in Fig. 3 the clamping disks 34 and 35 of the carrier 16 are held separated by the cam 38, the cam follower 39a being in engagement with the trailing end of the cam lobe 47a. Also shown is a bobbin in the loop cutter pocket 51. With the cams 38 and 68 rotating in a counterclockwise direction, the disks remain separated while the bobbin in receptacle 12 of the receiving conveyor moves into the gripping zone defined by the intersecting arcs of the conveyor and carrier and the bobbin in the loop cutter pocket 51 is shifted upwardly by the lifter fingers 69 and 70, the timing being such that the lobe of cam 68 engages with its follower 71 immediately prior to movement of recess 46 of cam 38 into position to receive the follower 39a.

Upon entry of the follower 3941 into the cam recess 46 the clamping disk 34 is moved by the force of the biasing spring 400 acting upon the collar 40 so as to grip the bobbins in positions A and B; and in the continued rotation of the earns 38 and 68 the lifter fingers 69 and 70 are lowered and the bobbin which was clamped in position A is advanced to position B while the bobbin restored to the carrier at position B is advanced to position C, in which latter position it overlies a receptacle 15 of the condensing conveyor. As the bobbins are thus advanced to positions B and C, follower 39a is engaged by cam lobe 47 to effect a separation of the disks and thus release the bobbins to the loop cutter and condensing conveyor simultaneously.

In the continued rotation of the carrier the clamping disks remain separated so as to be conditioned for the reception of the next bobbin delivered to the carrier by the receiving conveyor as well as for the restoration of the previous bobbin to the carrier from the loop cutter in a repetition of the cycle above described.

It will be observed that While the cam follower 39a is in engagement with either of the diametrically opposed recesses 46 or 46a, the bobbins are advanced by the carrier a distance corresponding to the spacing of positions A, B, and C, and that while the follower is in engagement with lobes 47 or 47a the bobbin in the loop cutter is operated upon and then restored to position between the disks While the next bobbin is also moved into position between such disks by the conveyor 13. In short, two bobbins are presented to the carrier and simultaneously gripped thereby at spaced points and after a predetermined advance are simultaneously released from the carrier.

I claim as my invention:

1. In a machine for operating upon bobbins, the combination of a first conveyor, a second conveyor driven in timed relation to the first conveyor, mechanism disposed between the two conveyors for operating upon bobbins to remove surplus yarn therefrom and means for transferring bobbins from the first conveyor to said mechanism and then from said mechanism to said second conveyor comprising a carrier having a pair of bobbin clamping members, means for alternately opening and closing said members at spaced points in the travel of the carrier, said first conveyor operating to deliver bobbins to the carrier while said members are open, and means also operating during said open relationship of the members to restore bobbins from said mechanism to the carrier.

2. The combination with a bobbin winding machine having a conveyor for receiving wound bobbins and delivering them to a predetermined discharge point successively, a second conveyor driven in timed relation to the receiving conveyor, mechanism disposed between the two conveyors for operating upon bobbins, and a rotary carrier operative to transport one bobbin from said mecha nism to the second conveyor and another bobbin from said discharge point to said mechanism simultaneously, said transporting means comprising a carrier having opposed clamping members and means for intermittently imparting relative separating and approaching movements .to said members whereby to clamp and release bobbins interposed therebetween, said receiving conveyor being adapted to move bobbins into position between clamping members while in separated relation, and means also operating during such separated relation of the members to transfer a bobbin from said mechanism into position be- ;tween the clamping members.

3. The combination with a bobbin winding machine having a conveyor for receiving wound bobbins and delivering them to a predetermined discharge point suc- "cessively, a mechanism for removing surplus yarn from :the bobbins, a carrier for transporting bobbins successively from said discharge point to said mechanism comprising a pair of clamping members and control means itherefor operative to impart relative separating and approaching movements to said members whereby to clamp :and release bobbins interposed therebetween, said con- :trol means being adapted to hold the members separated :so as to condition them for the reception of bobbins at :said delivery point and then to cause the bobbins to be gripped by the members for advance to said mechanism,- and means operative while one bobbin is being delivered by the carrier to said delivery point to restore the bobbin from said mechanism into position between the clamping members.

4. A rotary carrier for bobbins and the like comprising a pair of opposed rotary clamping members and control means for imparting relative approaching and sepa= rating movements to said members at spaced points in rotation of the carrier, and means for delivering bobbins into a predetermined position between the members while in separated relation, one of said clamping members l1av= ing yieldable bobbin gripping elements with leading cam faces for engaging the bobbins at one end thereof,

5. In a bobbin winding machine, the combination of, a conveyor for receiving wound bobbins and successively delivering them to a discharge point, a device spaced from said discharge point and operable to receive bobbins, mechanism for operating on wound bobbins disposed midway between said discharge point and said device, a carrier for transporting successive bobbins first from said discharge point to said mechanism and then from said mechanism to said device, said carrier comprising a pair of rotary clamping members spaced apart axially and having opposed clamping surfaces which extend around the periphery of the members, means supporting said members for relative separating and approaching movements to release and clamp bobbins interposed between said surfaces, and control means operable first to move said members toward each other to grip simultaneously a bobbin at said discharge point and a bobbin from said mechanism and then, after rotation of said members, to separate the members and thereby deliver the respective bobbins to said mechanism and said device.

References Cited in the file of this patent UNITED STATES PATENTS 531,616 Black Dec. 25, 1894 1,619,729 Howard Mar. 1, 1927 2,323,350 Paynter July 6, 1943 2,696,901 Peterson Dec. 14, 1954 2,699,265 Railton et al Ian. 11, 1955

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