US1949854A - Driving mechanism for rotary braiders - Google Patents

Description

March 6, 1934. F. AUTEM 1,949,854

DRIVING MECHANISM FOR ROTARY BRAIDERS Filed March 2, 1952 2 Sheets-Sheet l fls i 55 50 INVENTOR Fred Auiem A TTORNEYS.

6', 1934. F. AUTEM DRIVING MECHANISM FOR ROTARY BRAIDERS Filed March 2, 1932 2 Sheets-Sheet Z INVENTOR. Red Auiem A TTORNEYS.

Patented Mo. 6, 1934 I I I Fred Autem, Wyomissing, Pa.', assignor to Textile Machine Works, Wyomissing, Pa, a corporation e of Pennsylvania Application March 2, 1932', Serial No. 596,181

' 4 Claims. (01. 96-7) My invention relates to rotary braiding machines and particularly to a device which is adapted to maintain continuous operating connections betweena driving shaftand the carriers for one set of bobbins as they passover threads from bobbins of another set and which is operable to cause said carriers to traverse said threads with-, out contactbetweensaid connecting device and said threadsf a 1 1 0. In the drawings: 1/ p 1 Figure 1 is a plan "view, partly brokenflaway, showing bobbin carriers in a braidingmachine embody n the invention. I i a Figure 2 is a sectional viewon the line 2,--2 P'lj of Figure 1 illustrating a connecting device according to my invention for one of the bobbin carriers; and a Y a 1 Figure 3 is a sectional elevation, taken substantially along the line- 33 of Fig.1, with cerparts omitted, of a portion of theqb'raiding machine. v f P w j I In the drawings the numeral 10 designates a platform rotatably mounted on 'a'hollow stand card 11 and carryingaplurality of brackets 12 each of which supports one of thebobbins 13 of the lower set. Suitable gearing, notshown, is provided for effecting rotation of a member I 21' aboutstandard 11 in the same direction as platform 1 and in unison therewith. a 230.; The bobbins 22 of theupper set are mounted on individual carrier-s23 each having a guide a rib 24'engaging a circumferential groove 25in a vertical flange 26 on member 21 and a fibre con-.

tact block 27 provided with a groove 28 engaging aiguide rib 30 on an inwardly extending annular'flange 31 near the upper end of flange 26. Contact blocks2'7 bear against anti-friction rollers 32 which are mounted on flange 31 and serve as a raceway for the carriers. Flange 31 is cut away at a plurality of circumferentially spaced points in alinement with slots 33 p'rovidedin the flange'26 for receiving threads from the lower bobbins as carriers 23 for the upper bob bins 22 pass thereover.

The'carriers 23 are driven on their raceway from 'ashaft 34 extending through standard 11 and carrying a plate 35 supporting brackets 36 on whichare mounted rotatable fliers 37 operable to maintain a continuous driving connection between shaft 34 and carriers 23 while at the same time permittingthe carriers to pass over a the threads from the lower bobbins without severing them. I

Each flier 3'7 comprises a sleeve '38 havingoa pair of diametrically positioned lugs or wings adjacent each end, the pair of lugs 40 at one end of sleeve 38 being angularly disposed with respect to the lugs 41 adjacent the other end thereof. The underside of contact block 27 is provided with spaced notches 42 and 43 for receiv- F ing 2. lug 40 or 41, respectively, to operatively connect the carrier 23 to shaft 34; Contact block 2'7 is provided with a rounded thread guiding edge 39 for preventing threads from the lower bobbins being caught in the slots 42and 4a. 9i

'Sleeve 38 is rotatably carried on a stud "4 9 mounted in a lug 44 on bracket 36 and is, provided with a bevel gear 45. In the arrangement shown the construction is simplified by providing a single bracket 36 for each pair of carriervdriving fliers 3'7 and their bevel gears 45 engagea single bevel gear 46. Bevel gear 46 is rotatable on a stud 47 on bracket 36 and is fixed to a pinion 48'wl'1ich meshes with a gear ring 50 secured to and movable with member 21 for turning the fliers 3'1. ,5,

As shown in Figs. 1 and 2, the stud-47 also jour nals one end of each of thestud's'49 for thepair ofsleeves 38'carried by bracket 36. The threads 51 from the lower bobbins extend around suitable tensioning devices 52 and through 9,

a sinuous braiding channel 53 between the ad: jacent edges of a pair of flxedcylindrical plates 54, one of which is mounted on a non-rotatable spider 17 mounted on standard .11. As the platform 10 and member 21 are rotated relatively to plates 54 the sinuous channel 53 causes each thread'to be alternatelyraised from and deposited in the corresponding slot 33 in, member 21 to pass alternately over and under one or more 7 of the bobbins 22 to the braiding point. Platform 10. and shaft 34 are driven in opposite directions by suitable driving means (not shown)- so that shaft 34 is operated to rotate thecarriers, 23 for bobbins 22 on their raceway about the 5 braiding point in the opposite direction to the movement of the lower bobbins and the raceway member 21. As a'carrier 23 for anupper bobbin 22 passes overa slot 33 in the flange 26 of member 21 the rotation of the associated flier 37 causes loo a driving lug 40 to be rotated out of engagement with the notch 42 in block 2'7 so that in the event a thread 51 lies in the slot 33 so as to extend under the carrier 23 to the braiding point it will not be contacted by the lug 40. At the same time a lug 41 at the other end of the flier sleeve is rotated into the notch 43 for maintaining the driving connection between the shaft 34 and the carrier 23, it being understood thatthe depth of notches 42 and 43 is such that lug 40 does 9 As shown in the drawings, the peripheral length of. the engaging end of a lug 40, 41 is desirably not substantially greater, and preferably less, than the length of the notches 42, 43 so that a particular lug engages in the corresponding notch for only a small part of a revolution of the flier. As a result, friction due to the faces of the lugs rotating in contactwith the walls of the notches is reduced. Further, becauseof the short intervals of engagement of the lugs it is not necessary to effect a fine adjustment in the initial positions of the lugs relatively to the carrier notches to maintain proper timing with respect to other machine parts in order to properly provide for passage of the lower bobbin threads; the short peripheral extent of the lugs permitting 'considerable latitude to provide ample clearance for thread passage in the interval between engagemerits of lugs corresponding in axial disposition on the flier.

it While the peripheral extent of the engaging end of the flier lugs is preferably considerably less than the length of the carrier: notch or slot, as shown, whereby it is possible to provide a plurality of lugs in each axial position, it might approach or slightly exceed the slot length. How ever, in order to maintain ample clearance for passage of lower bobbin threads it is necessary that the gaps between the lugs'should not be undesirably small and therefore, the peripheral extent of the lugs; should not be substantially v greaterthan their radial length.

The provision of a plurality of lugs at each axial position permits the passage of 'several lower bobbin threads at each revolution of the flier rather than a single thread as in certain prior constructions.

driving connection may be reduced with a consequent reduction of friction and wear. The arrangement also permits the braider to be operated at a more rapid rate and such increase of speed results in greater production.

-As carrier 23 progresses over slot 33 the rotation of the flier 37 moves the lug 41 from driving relation in slot 43 sothat it does not sever the thread 51, and the other lug at the opposite end of the flier sleeve enters the notch 42 to drive the carrier.

It is to be noted that, each upper bobbin carrier is continuously and .nninterruptedly connected to the driving shaft. therefor by its flier inasmuch as a lug atone or the other end of the. flier sleeve is positioned in the corresponding notch of the carrier block when a lugat the opposite end of theflier is rotated out of the corresponding notch to avoid contact with threads from the lower bobbins.

What I claim is:

L In'a braiding machine having bobbin carrier structure, driving means therefor comprising rotatable flier structure having a plurality of carrier engaging members arranged in pairs spaced axially along said flier structure, the members of each pair being diametrically disposed with respect to their axis andrelatively' narrow in width to provide large oppositely disposed openings between the sides of the members, said As a result, the'rate of op-' eration of the flier to maintain a continuous pairs of members being angularly disposed about said flier structure so that the members are successively engaged with and disengaged from said carrier structure to maintain a continuous driving connection between the carrier and flier structures while enabling a thread to pass therebetween, and means for maintaining a continuous driving connection with said flier structure for rotating the same.

2. In a braiding machine having bobbin carrier structure, driving means therefor compris ing rotatable flier structure having a plurality of carrier engaging members arranged in pairs spaced axially along said flier structure, the members of each pair being diametricallydisposed with respect to their axis and of such width that the angle of each of the two openings formed by the sides of the members of each pair is of the order of 180, said pairs of members being angularly disposed about said flier structure so that the members are successively engaged with and disengaged from said carrier structure to maintain a continuous driving connection between the carrier and flier structures while enabling a thread to pass therebetween, and means for main-- taining a continuous driving connection with said flier structure for rotating the same.

3. In a braiding machine having bobbin carrier structure with a plurality of slots therein, drive ing means therefor comprising rotatable flier structure having a plurality of relatively narrow lugs arranged in pairs spaced axially along said flier structure, the lugs of each pair being diametrically disposed with respect to their axis to provide large oppositely disposed openings between the'lugs, said pairs of lugs being angular-1y disposed approximately apart around .said flier structure so that the lugs are successively engaged with and disengaged from their respective slots in said carrier structure ,to maintain a continuous driving connection between the carrier and flier structures while enabling a thread to pass therebetween, and means for maintaining acontinuous driving connection with said flier structure for rotating the same.

4. In a braiding machine having bobbin car-, rier structure with a plurality of slots therein, driving means therefor comprising rotatable flier structure having a plurality of relatively narrow carrier engaging members'arranged in groupsof two only, said groups b'eingspaced axiallyalong the flier structure and adapted to engage in said slots in the bobbin carrier structure, the ,two members of each group extending in opposite directions and substantially along astraight, line passing through the axis of the flier structure thereby to provide large oppositely disposed openings between said members, the members of the said groups being angularly disposed about said flier structure so that the members are successively engaged with and disengaged from their respective slots in the carrier structure to maintain a continuous driving connection between the carrier and flier structures while enabling a thread to pass therebetween, and means for maintaining a continuous driving connection with said flier structure for rotating the same.

, FRED AUTEM.

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