US2753124A

US2753124A - Method and apparatus for winding textile bobbins

Info

Publication number: US2753124A
Application number: US333952A
Authority: US
Inventors: Gutermann Richard Carl
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-02-01
Filing date: 1953-01-29
Publication date: 1956-07-03
Anticipated expiration: 1973-07-03
Also published as: CH299998A; GB734042A; CH300891A; FR1073669A

Description

ully 3, 1956 m. c. GUTERMANN M METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Filed Jan, 29, 1953 lO ISueetS--Slxee 2 MMI 3, 1956 R. c. GUTERMANN 2,753,24

METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Filed Jan. 29, 1955 10 Sheets-Sheet 3 JMW W l5 R. GUTERMANN 75%4 METHOD AND APPARATUS FUR WINDING TEXTILE BOBBINS Filed Jan. 29, 1953 l0 Sheets-Sheet 4 MEW W56 R. c. GUTERMANN METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Filed Jan. 29, 1953 l0 Sheets-Sheet 5 MW 3, 1956 R. c. GTERMANN 2,753,124

METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Filed Jan. 29, 1953 l0 Sheets-Sheet 6 JUNE? 1956 R. c. GUTERMANN 2,753,124

METHOD AND APPARATUS FOR WTNDTNG TEXTILE BOBBTNS Filed Jan. 29, 1953 1o sheets-sneer v 285 2ao`. I

July 3, 1956 R. c. GUTERMANN METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS 10 Sheets-Sheet 8 Filed Jan. 29, 1953 July 3, 1956 R. c. GUTERMANN 2,753,124

METHOD AND APPARATUS FOR VNDING TEXTILE BOBBINS Filed Jan. 29, 1953 10 Sheets-Sheet 9 July 3, 1956 R. c. GUTERMANN 2,753,124

METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Filed Jan. 29, 1953 l 10 Sheets-Sheet 10 Fig. 34

METHOD AND APPARATUS FOR WINDING TEXTILE BOBBINS Richard Carl Gtermann, Zollikon, Zurich, Switzerland Application January 29, 1953, sanar No. 333,952 Claims priority, application Switzerland February 1, 1952 27 Claims. (Cl. 242-48) The invention relates to a method of making a wounr. bobbin, in particular a wound cardboard, together with .an arrangement for carrying out the method.

' part shown on an enlarged scale, while Fig. 3 shows a cross-section taken on the line A-A yof Fig. 2.

Figs. 4 and 5 show, as viewed at the side and from above, the cutting member in the position for making the tongue in the cardboard tube to secure the starting end of the thread;

Figs. 6 and 7 show the cutting member, in side view and as seen from above, in the position for making the tongue to secure the final end of the thread.

Figs. 8 and 9 show the thread clip as viewed at the iside and from above, while Fig. l() is an end view of the nippers of the thread fclip.

Fig. ll shows diagrammatically in side View the tongue presser for securin g the iinal thread end.

Fig. l2 is a side view of the shears;

Fig. 13 is a side view of the thread clamp;

Fig. l4 is a side view of the tonge presser for securing the starting thread end;

Fig. 13 is a top view of the members according to Figs. S-ll arranged beside each other;

Figs. 16-20 show various stages in the operation of securing the final thread, while Figs. 2l and 22 illustrate diagrammatically the process of tightening, clamping and severing the thread after the end has been secured.

Figs. 23-26 show diierent stages of the method of securing the initial thread up to the starting of the winding operation.

Fig. 27 shows the means for actuating the winding spindle shown in Fig. l;

Figs. 28 and 29 show the means for moving the thread holding device as a unit with respect to the winding spindle;

Fig. 30 shows the parts of the thread holding device including the driving means and a winding spindle;

Fig. 3l is a diagram showing the developed perimeters of ten cams one above the other.

First of all, the design and method of working of the winding spindle and of the thread securing apparatus will be described followed by a disclosure of the whole method.

Referring to said annexed drawings, according to the `form of embodiment of the Winding Aspindle as in Figs.

f' nited States Patent O l-3, this incorporates a guide and bearing sleeve 1 (hereinafter called bush) rotatably carried in the machine gearbox la and designed to receive its rotational drive through a gearwheel lc firmly connected thereto by set screw 1b. Said bush 1 projects with its head la' beyond the gearbox la and forms at le an abutment for the bobbin tube 9 to be wound, and at 1f a shoulder as abutment against the corresponding end wall of the gearbox. The bush 1 is secured against endwise displacement by a set ring or collar 1g. The bush 1 has fixed thereon a nose 2 projecting inwardly and engaging a longitudinal groove 2a of the actual spindle sleeve 3 so that the latter is rotatably connected to the bush 1 and axially displaceable with respect thereto within the limits of the abutments 2b and 2c. At its front end-at the right in the drawingthe spindle sleeve 3 carries an expansible member "l, 8 in the form of an expansible body slit to a spring-cage 7, 8 (shown more particularly in Figs. 2 and 3) which serves for taking and clamping the bobbin tube. The spindle sleeve 3 carries a mandrel for endwise movement therein. At its front end, the mandrel 5' has a tapered expander head which works together' with enlargements S of the spring-cage. The mandrel with the expander head 6 isboth together with the spindle sleeve 3 as an unit and also independent of it and its sliding movement*axially displaceable in such a way that it can, with the springcage 7, il at any desired position outside the sleeve head 1d, expand or tighten said cage or loosen it. For the corresponding independent control on the one hand of the spindle 3 with the spring-

cage

7, 8 and on the other hand of the mandrel 5 with the expander head 6, the following devices are provided:

By means of a set screw 4b, a control head 4a is fixed on the portion of the spindle sleeve 3 projecting behind from the box la. Said control head la is rotatably carried in a stationary sleeve llc which, with diametrically disposed pins 4d, is surrounded by the fork 4e of a control lever 4f, said lever receiving a swivelling drive from the axle Alg, whereby the spindle sleeve 3 during its rotary movement with the bush l is longitudinally displaceable with respect to the bush l. The mandrel 5 projects behind beyond the spindle sleeve 3 and carries at its end a screw thread for engagement with a cap 5a. The cap has a lengthening which extends over the end of the bush and terminates in a shoulder 5b against which lies a control lever 11 that receives a swivelling drive through the axle 11a.

inserted between the end of the sleeve 3 and the rear portion of cap Sa is a spring 10 which tends to draw the mandrel 5 with the expander head 6 to the back with respect to sleeve 3, i. e. into a position in which the expander head 6 stresses, i. e. expands the spring-case on account of the enlargements 8 running on to the head 6.

In this stressed or bobbin-tube clamping position produced by spring action, the lever 1l has the position as in Fig. l. lf the lever 11 is swung to the front, i. e. to the right according to the drawing, coming to bear on the shoulder 5b and under tensioning of the spring it), the mandrel 5 moves to the front with respect to the sleeve 3, thus relieving the spring-cage from stress so that the bobbin tube 9 fitted on it is no longer held clamped.

From the described design of the winding spindle it may be seen that the

clamping part

3, 7, 8, as well as 5, 6 isaxially displaceable as a whole into any desired position by the control lever 11, when the latter is in its inoperative (dotted-line) position.

By swinging the control lever 11 into its operative position, thus bringing it to bear against the shoulder 5b of the cap 5a, the mutual displacing ofthe mandrel 5 with the expander head 6 in relation to the spindle sleeve 3 with the Ispring-

cage

7, 8 takes place in the sense of 3 an expanding of the cage. Because of this it is possible to it the bobbin tube 9 as deeply as desired onto the clamping part, i. e. to hold; it clamped in any position, whether only half theA tube for instance, or the whole; of it, is fitted on.

Let the particular modus operandi of the winding mandrel be explained with reference to a disclosure of the method, say for making a cross-wound bobbin of the, usual commercial type.

Prior to starting the winding, the spindle sleeve 3 with the spring-

cage

7, 8 and the mandrel 5 with the expander head 6 are retracted into the bush 1 by lever 11, the spring-case being then detensioned and the lever 4f takes up the dotted-line position. In this way, the clamping part 3, 7 andS as well as 5 and 6 are out of action.

Now if an empty cardboard tube 9 fed from a magazine or by a gripper arriv in front of the head 1a.' of the bush 1, the clamping part, i. e. the spindle sleeve 3 with the spring-cage 7, 3 together with the mandrel 5 with expander head 6, is pushed into the empty tube 9. Then the control lever 11 is swung into its dotted-line position, so tha-,t the spring 1,0 gets detensioned. Incidentally the mandrelS moves backwards with respect to the spindle sleeve 3, so that the expander head 6 runs onto the enlargements 8 of the spring-cage 7 and causes the cage toV open out, whereby the tube 9 gets clamped in its axial position whichin fact, does not correspond to that shown in Fig. 1, but to the position as in Fig. 4, so that tube 9 is not set on so deeply. In this position of the tube 9 on the clamping part of the winding spindle, the beginning of the thread to be Wound is secured in any desired manner. This may be accomplished, for instance, in that a tool stamps out a tongue 2 somewhere in the middle of the tube 9, and through this the beginning of the thread will be held, i. e. secured (see tongue 2 in Figs. 4, 2 2-25).

For t-he more accurate and symmetrical positioning of the bobbin part 9 in relation to the winding member (not shown), the clamping part of the winding spindle may be released as aforementioned, so that the clamping part is pushed deeper into the tube, and then a member simultaneously acting on the tube 9 causes same to rest on` the front-end 1e of the head 1d of the bush 1 so as to determine the position of tube 9 denitely.

The winding position of the tube on the clamping part of the winding spindle is illustrated in Fig. 1.

Now the tube 9 can be wound with the thread. The tube 9 having been Wound with the `desired length of thread, the securingV of the end of the thread to the free extremity of the tube will be etected in any desired manner, say, by a tool which stamps a tongue 2a into the; tube extremity in which the thread end is secured. Then the thread is severed (Figs. 6, -19).

Now the clamping part of the winding spindle is again loosened and retracted by control lever 4f'into the sleeve 3 so that the nished woundA bobbin, i. e. the wound tube 9, becomes free and falls, for instance downwards, out of the machine to be then led to the packing station, if necessary.

The thread securing apparatus disclosed below in detail with respect to design and method of working, according tofFigs. 4-15, is provided with a cutting member 12 for cutting the `tongue 2 to secure the starting end of the thread (Figs. 4 and 5.), and the tongue 2a for the nal'end. of the thread (Figs. 6 and 7), further with a thread clip 14 cooperating with the thread guide 13- of the winding machine, as vwell as with two

tongue pressers

15 and 16, of which the one adapted to` press down the tongue 2 for securing the starting thread end has the reference numeral 16,l while the other for pressing down the tongue 2a to secure the final thread end has the numeral' 15. In Vaddition to the aforementioned members, the thread securing apparatus also includesY a threadV nipper-117 with vshears 18. i

Preferably, vthe described thread securingv apparatus is mounted on the winding machine in front of each winding spindle (Fig. 1). During the winding period of the machine, the automatic thread securing apparatus remains disengaged. As soon as the set number of metres has been wound, the winding spindle is brought to rest, whereupon the control members will be engaged for operating the thread securing apparatus.

The member 12 for' cutting the tongues 2, 2fai'n the periphery of the bobbin tube V9, is represented in Figs. 4 and 5 as positioned for cuttingv the tongue 2 to secure the starting thread end, and in Figs. 6 and 7 as positioned for cutting theftongue 2a tosecure the final thread end..

The cutting member 12 comprises two

knives

19 and 20. The actual tongue-cutting knife 197 is formed as a lever swivably mounted on an axle 21 in a block 22 firmly located in the frame (not shown) of the thread securing apparatus. The block 22'` includes a bracket which serves as counter-knife 20` to the knife I9 and has two lateral cutting cheeks between whichy the knife 19 can swing. Iournalled in block 22 is the control axle 23 which, with an arm 24, drives the knife 19, i. e. swings it up and down through `the intermediary of a link 25. The cutting member 12 is so provided that the knife 19 can be introduced into the bobbin tube 9, the thread securing apparatus ,being approached to the tube 9 in such a way that the counter-knife 20 rests outside against the tube 9.

When swung up round the axle 21, the knife 19 introduced into the tube 9 cuts a,

tongue

2 or 2a from inside to outside out of the periphery of the tube 9 and bends, with its inclinedA face 19a, the tongue away upwards from the periphery of tube 9.

The block 22 is mounted as are independent block on the frame or bedplate of the; thread securing apparatus.

The thread clipr 14, illustrated in, detail in Figs. 8 and 9, includes two

nippers

26 and 27 so designed that in the closed position of the two nippers (Fig. 8), an open ing 28 is provided by which the thread is held in loose guiding. The nipper 27 forms part of a lever 27a swivably mounted on control axle 29 in a block 30 located on the frame or bedplate of the lthread securing apparatus.

The nipper 26 is swivably arranged on an axle on nipper 27. The nipper 26 is swivelled by a push rod 32 which by means of pin-and-slot connections 33 can be pushed along the lever 27a and engages at the front end a slot 34 in a pin 35 of the nipper 26, while the rear end projects beyond ,the lever 27a and, with a pin 36, bears on arm 37 of a control axle 38 journalled inl block 30. A tension spring 39 engages atone ond at 40 the push rod 32 and at the other-end 4-1 thelever 27a; The spring 39 continually retracts thepush rod 32,4 wherebythe pin 36 rests against the control arm 37. The spring 39 therefore tends to keep the nipper26 inthe closed position.

The position, of the partsl shown in Figs. 8 and 9 corresponds to the closed position of the thread clip.v If the control arm 37 is moved in the directionV of the arrow P by the control axle 38, the nipper 26 opens by movement of the push rod 32 (dotted line position in Fig.` 8).

The set-up of the further members of the thread se,- curing apparatus will bebetter understood, first of all with reference to the illustrative embodiment as in Figs. 12 and 13.

United to the block 30v or vintegral there-with `is a; block part 42 firmly connected to the bedplate or frame of the thread securing apparatus. By` a bracket 4-3, the part 42 forms the fixed' support'of a blade 44 of the shears 1.8, the blade being exchangeably fixed thereon. On the bracket 43, the second plate 46 in the form of a lever is fulcrumed to an axle 45, the end of said lever being connected through a link,47 to the arm 48 of the control axle 49,. By the up and` down movement ofthe. control arm 48, the closing and opening movements of the shears are etected in a. positive manner-(Fig: 12).-,`

y .The thread gripperv 1-7f as i'nIFig'. includesvmoreover a stationary clamping part 50 formed by the bracket 43 of block 42; on said part 50, the axle 51 has a lever 52 pivoted thereon and forming with respect to the clamping part S the second clamping part 53 having preferably a rubber sleeve to ensure perfect seizing and clamping of the thread. The other extremity of lever 52 projects into the path of a pin 54 of the control arm 48 of axle 49.

A spring S arranged between the bracket 43 or block 42 and lever S2 urges the

lever

52, 53 continually against the control pin 54, so that the

thread gripper

50, 53 is normally held by said spring in its closed position. By the up and down movement of the control arm. 48, the thread gripper 5l), 53 is opened and closed.

Both the movable blade 46 (Fig. 12) and the movable thread gripping member 52, 53 (Fig. 13), each controls one of the tongue pressers and 16 as described in what follows:

The tongue presser 15 for securing the nal end of the thread (Fig. ll) comprises a two-

armed lever

56, 57 pivotally carried on axle 53 in the bracket 43 of the block 42. The arm 56 is provided in the front part with a stamp, the actual tongue presser 15. The free end of the arm 57 is spring (6b) biassed so that its cross-pin 59 bears on blade It6 (Figs. l1 and l2). In the opened position of the shears as in Fig. l2, the tongue presser 15 is in disengaged condition. On closing the blade 46 through the control arm 4S, the

lever

56, 57 with the tongue presser 15 is caused to move anticlockwise into operative position.

The tongue presser 16 for pressing down the tongue 2 to secure the starting end of the thread is in a similar way pivotally connected to the

thread gripping member

52, 53, as is the tongue presser 15 to the blade 46. The presser 16 includes a two-

armed lever

61, 62 capable of swivelling round the axle 63 on the bracket 43 of block 4.12 (Fig. 14).

Attached to the

thread gripping member

52, 53 is a cross-piece 64 (Figs. 13 and 15) having a set screw 65 lying with its bottom part 65a in the path of the arm 61 of the tongue presser 16.

Attached to the free extremity of the arm 62 of the presser 16 is a tension spring 66 with its other end engaging the block 42. Due to the action of spring 66, the presser 16 tends to remain in its disengaged position.

On opening the

thread gripping member

52, 53, the tongue presser 16 is pressed down by set screw 65 into operative position on the tongue 2 to secure the starting end of the thread.

The different members according to Figs. ll-lll, i. e. the tongue presser 15, the shears 18, the thread nipper 17 and the tongue presser 16 are disposed alongside each other on block 42 and constitute a unit as in Fig. 15.

The mode of operation of the different members together with the thread guide 13 of the winding machine will be explained hereinafter with reference to a complete winding operation, whereby it must be pointed out that the different members are-through the control axles disclosed singly hereinbefore-actuated by control members which are moved for instance by different cam eccentrics of at least one preset program roller. Independent of this, the whole thread securing apparatus is also brought, together with said members, by means of preset program control members into the different positions necessary for carrying out the winding process.

For describing the method, we start from that step in which the thread guide 13 (Figs. 16-26) of the machine, after the winding of the bobbin tube 9, remains at rest at any desired position with respect to the winding machine (not shown) (Fig. l). The thread guide 13 is brought to the free fore end of the tube, the winding machine being run at a slow speed until this position is reached.

From this position the thread guide 13 will be raised a definite distance from the winding of the tube 9 (Fig. 16). The thread securing apparatus is then moved by its control members so that the knife 19 of the cutting member 12 comes into the position as in Figs. 6 and 7, i. e. into the front edge of the tube 9, held by the gripping member 7 of the winding spindle 1d. Thereby the tongue 2a is cut by the

blades

19 and 20 actuated through the control axle 23, and is bent up, whereupon the knife 19 is again brought down into the position shown in Figs. 6 and 7 and moved away by the thread securing apparatus. The thread clip 14 (Figs. 8-1()) now opens for the placing of the thread, engages with open nipper 26 over same and is closed, whereupon the clip is swung about the axle 29 and the thread will be brought over the extremity of the tube 9 to the other side of the tube (Fig. 17). Then the thread clip 14 moves approximately parallel to the axis of the tube (Fig. 18) and away from the end of the tube, until the thread portion 67 lies in front of the bent-up tongue 2a. Now the tongue goes down and is moved a slight distance in the Way towards the tube 9 (Fig. 19) so that the thread comes under the tongue. After this function, the thread guide 13 moves from the position shown in Fig. 19 somewhat away from the tube 9, i. e. from the position drawn in broken lines into that shown in full lines (Fig. 20). By this, the still existing open thread loop is tightened in the tongue 2a. Now the thread securing apparatus is approached in such a way that the tongue presser 15 comes over the tongue 2u. The presser 15 is moved downwards so that it presses the tongue 2a again flush with the peripheral surface of the tube 9, the thread end being thus clamped.. The operation of the presser 15 for pressing the tongue down is brought about by the arm 46 of the shears 13 (Figs. 1l and 12), whereby said arm swivels anticlockwise round the axle 45 so that simultaneously with the pressingdown of the tongue presser 15 the

shear blades

46 and 44 close and the thread is cut.

Incidentally, the thread gripper 17 (Fig. 13) has to make in the open position a movement on to the tube 9, whereby the thread-at the moment held tight between tongue 2a and thread guide 11S-comes into the thread gripper 17; this has closed and simultaneously clamped the thread, i. e. shortly before the shears cut the thread. The conditions are illustrated in Figs. 2l and 22.

Subsequently the thread securing apparatus moves away from the tube 9 or spindle 1d and remains closed for a short while. The winding spindle 1d which, by its clamping part 7, holds the tube 9 under tension from within, is now loosened and drawn back, thus setting the wound bobbin tube free for further use.

Then, for the winding of a fresh empty tube, a magazine therefor (not shown) located above the winding spindle 1d will for instance be lowered so far that the lowermost tube in the magazine is brought coaxial to the axis of the winding spindle. The

relaxed spindle

7, 1d projects into the new tube 9 to nearly the middle and clamps it. This position of the tube 9 on

spindle

7, 1d is shown in Figs. 4 and 5.

Subsequent to this, the thread securing apparatus isapproached to the tube until the knife 19 is introduced; towards the middle of the tube 9 (Figs. 4 and 5) whereupon the tongue 2 is cut in the tube and bent away from it,

The` thread gripper 17 which still keeps hold of the,` thread previously cut off and now forming the start, moves: axially away from the tube until coming in front of the;

free tube end (Fig. 23) and then to the other tube side; (Fig. 24) and thereafter again on to the tube (Fig. 25 ),A whereby the thread will be pushed under the tongue 2., Now the tongue presser comes into action., in that the thread nipper or its gripping parts 5l), 53 open and, by the

set screw

65, 65a, the tongue presser 16 is depressed by its lever 61 onto the tongue 2, thus clamping the thread in the tongue 2. In the meantime the thread gripper has let free the end piece of the thread.

Through the lever arm 61 being set free, the tongue presser 16 is swung away under action of spring 66,

7 whereupon the ythread securing apparatus isagain led away from the tube 9. New, an abutment (not shown) is broughtfrom above 1n front of the free end of the tube 9, and the winding

spindle

7, 1d is slightly detensioned; 'thisalines the tube 9 accuratelyy against the stop by pushing same forwards and. backwards, and clamps the tube rmly again by expanding from within. The thread guide 13' now lays itself sideways onto the tubel (Fig. 26), andthe winding machine is restarted automatically to wind the bobbin tube 95.

The particulars of my mechanism which are known per se in the art, shall nowbe described more in detail..

As shown in-Fig-l 30, a'magazine 200'for empty bobbin tubes 9 is arranged? above the front' part of the winding spindle 7K. The magaziney 200V has at the lower side thereof'an. exit opening allowingV only' one bobbin tube 9 to escape from the magazine at a time. In order to prevent the bobbin-tubes' 9' fromV escaping from the magazine 200 two resiliently yielding locking, members 201. are provided on the lower side thereofy which engage the. lowermost bobbintube 9; The locking members 201 may be designed as leaf springs yielding whenever the lowermost bobbin tube 9 is Vforcibly removed downwards. One end wall 202 of the magazine 200 is' shorter than the lateral' walls thereof so' that one end of the lowermost bobbin tube 9 is free soas to allow the winding spindle 7 to engage this bobbin tube. The opposite endv wall, however, of the magazine 200 is produced and' has an extension 203. extending beyond and below the lowermost bobbin tube so as tov form a stopy for the free end of the bobbin tube to be placed on the winding spindle 7; TheA magazine 200-is displaceable in vertical direction upwards and downwards by means of a guiding device (not shown) including a rod (not shown) andl a cam (not shown) having a perimeter shown in` Fig; 31 bythe lowermost curve K. It should be noted that according to the curve K the magazine 200- is twice moved downwards by different amounts-while the correspondingcam performs one revolution.

The winding spindle described'- hereinabove' in connection with Figs. l, 2 and 3- has an axially displaceable part 32 at the forward; end of which the expander head 7 is providedA which may be retracted by moving the part 3 backwardsA intov the headV 1d lof the spindle when the bobbin tube 9 is to be exchanged on the winding spindle. The axiall movement of the spindle part 3 is caused' by means of the lever 474 being swingable about the axle 4g. Asv shown in Fig. 27 a second lever 210 is supported by thel axle 4g, a pivot 2111 connecting the second lever 210 with a rocl- 212 connected by a further pivotu 213 with a lever'2l4 swingably supportedl on the frame ofthe machine by apivot 215. The lever 214 is provided with a touch roller 2216 rotatably supported by the same which abuts under the influence of a spring 2-17 against the perimeter of a cam 218. The spring 217 is connected:

with one end thereof to the-lever 214v and. with the other end to the stationary gear box 1a. The cam 218y is supported by a shaft 219 rotatably arranged onthev frame of the machine, the shaftV 21.9'carrying also the already mentioned cam (not shown) for moving the magazine 200. The perimeter of the cam 218 is shaped as shownby the curve-J of Fig.y 3.1.

The winding spindle comprises a centrally arranged mandrel 5 for expanding the: expander head 7 by means of the conical head 6 shown in Fig. l. The mandrel 5 is. maintained by the spring in such a position that the expander head 7 is expanded in order to clamp in.

position abobbin tube 9 placed over the same. By means of the lever 11 the mandrel, may be displaced so as to assume. the ineffectivefposition thereof in which. the expander head 7 is not expanded. Ther lever 11 is connected with a shaft. llaconnected.. with a second lever 220v as. shown, in Fig,... 27. The latter is. connected by a pivot 221 with one end of a rod 222 the other end' of which is coupled by means of a pivot 223 with a lever 224 arranged for rotationabout the axle 215. A touch roller 225'is supported for rotation by the lever 224 which under the tension of a spring 226 engages the perimeter of av cam 227 arranged on the shaft 219 mentioned hereinoefore, the cam 227 having a perimeter shaped in accordance with the curve H shown in Fig. 3l.

The three cams with the perimeters H, J, and K operate as follows:

When abobbinl tube 9 has been completely covered by thread, the mandrel 5 is advanced by means of the cams 227 and then the clamping action of the expander head 7 within the tube 9 is relieved. Then by means of the two cams 2'18 and 227. the spindle part 3 and the mandrel 5 are simultaneously retracted, the conical head 6 remaining always at a distance from the clamping part 8 of the.

expander head so that the latter is withdrawn from the fully wound bobbin tube and drawn into the spindle. head 1d whereupon the finished bobbin drops downward. Already during these movements the magazine 200 starts to lower its position so as to be, after the dropping of the nished bobbin, in a position in which the tube. 9 being lowermost in the magazine is situated coaxially in line with the winding spindle. This condition is shown in Fig'. 27. Then the cams 218 andI 227 control the motion of the spindle part 3 and the mandrel 5 (with the expander head' being released) Vtoward the front into the lowermost tubey 9 of the magazine 200, however only so far that the tube is only pushed with part of its length over the expander head. Then the cam 227 allows the mandrel to retract a little so that the head 6 advances toward the part S and the expanderhead 7 is expanded so; as to clamp lthe tube 9. Then the magazine 200 moves upward and causes the tube 9' to be removed from the magazine `in opposition to the action of the locking members 201.

Now byV means of the thread storing apparatus at the shell, therst tongue is punched out and the start of the thread clamped under the same. Subsequently the margin 200 moves again downwards, however only by so much thatthe extension 203 is. placed in front of the free end' ofv the tube 9 on the winding spindle. Then the cams'218- and 227 advance the mandrel 5 and the spindle part 3 farther soz that the clamping action of the expander head 7 ceases to be operative and the latter is completely shifted into the tube 9` which is thereby locked in, axial direction by the extension 203. Finally the cam 227 allows the mandrel 5 to withdraw a little so that the expander headV 7` is expanded and clamps the tube 9. Now the'magazine200 moves again upward into its original position shown in dotted lines in Fig. 27. The shaft 219 hasv now performed a complete revolution and is uncoupled whereas the means for revolving the spindleV are coupled with the same in order to wind a thread on the bobbin tube 9'.

The stamping or cutting* device of' the thread` storing apparatusV shown in Figs. 4-7'of the drawings'is drivenby the shaft 23; According to Fig. 30 of the drawings a leverarm 230 is' arranged on the axle v23`which is coupled by means'of a joint 231 with one end of a rod 232, the other end ofY which is connected by a joint 233 with a lever 234 pivoted about an axle 235 supported by the frame of the machine.. The lever 234 carries a roller 236 rotatably supported by the same which abuts against the perimeterY of a cam 23S under the influence of a spring 237. The cam 238 is supported by the shaft 219 mentioned hereinabove and has a perimeter the form of which is shown by the curve Dshown in Fig. 3l. During each revolution of the. shaft 219 the stamping or tonguecutting device 12. is twice actuated for a relatively short period of time so as to cut during the iirst operation thereof the. tonguefor securing the. end of the thread of a finished bobbin whereas during the secondV operation of thetongue-cutting device 1'2 the tongue is cut which secures the beginning of a thread4 to an empty'bobbin tube which has been placed in the meantime on the winding spindle.

The thread clip 14 shown in Figs. 8-10 of the drawings is provided with two control or driving

axles

29 and 38. On the axle 29 is arranged, as shown in Fig. 30 of the drawings, a lever 240 connected with one end of a rod 242 by means of the joint 241. The other end of the rod 242 is coupled by a joint 243 with a lever 244 which, as shown in Fig. 30, is fulcrumed by the shaft 235 mentioned hereinbefore to the frame of the machine. On the lever 244 a contact roller 245 is supported which abuts against the perimeter of a cam 247 under the influence of a spring 246, the ends of which are connected, respectively, with the lever 244 and a hook 248 secured to the frame of the machine. The perimeter of said cam 247 is shaped according to the curve F shown in Fig, 31.

On the control axle 38 a lever arm 254) is arranged which is connected by a joint 251 with a rod 252 the other end of which is connected by a joint 253 with a lever 254 swingable about the shaft 235. A contact roller 255 is rotatably supported by the lever 254 and abuts under the intlucnce of a spring 256 against the perimeter of a cam 257 shaped according to the curve E shown in Fig. 3l. The spring 256 is connected with the ends thereof with the hook 24S and the lever 254.

The cam 247 causes the thread clip or pincers 14 to ascend during the greater part of the revolution of the cam into an elevated position shown in Fig. 30 which it assumes under the intiuence of the spring 246. Only when a projecting part of the cam 247 acts on the roller 245, the forward part of the clip or pincers 14 equipped with the working elements or

nippers

26 and 27 is temporarily lowered, as shown in Fig. 30 in dotted lines. However, the other cam 257 allows during the greater part of the revolution thereof the lever 37 to assume a position being inoperative with respect to the nipper 26. Only when two recesses of the earn 257 travel under the roller 255, the lever 37 is rocked temporarily so as to move the nipper 26 away from the nipper 27 into the open position so as to grip or release the thread. During the rst rocking movement of the cutting member or pincers 12 downward the pincers are opened and subsequently closed again when the pincers are in lowered condition so as to grip the thread. During the subsequent raising the pincers remain closed so as to lift the thread. During the next lowering of the pincers the same remain closed, and during the following raising of the same it is opened. The remaining operations of the thread clip or pincers 14 have been described hereinbefore in detail in connection with Figs. 16-19.

For actuating the tongue presser shown in Fig. 1l and the shears 18 shown in Fig. l2, the axle 49 is provided on the thread storing device. As shown in Fig. of the drawings, the axle 49 is equipped with a lever arm 260 coupled by means of a joint 261 with one end of a rod 262, the other end of which is connected by a joint 263 with a lever 264 swingably supported by the axle 235 mentioned hereinabove and connected with a roller 265 rotatably supported by the lever 264. Under the influence of a spring 266 the roller 265 is pressed against the perimeter of a cam 267 which is shaped according to the curve G shown in Fig. 3l. As all cams so far described hereinabove, also the cam 267 is arranged on the shaft 219. The spring 266 is connected on the one hand with the lever 264 and on the other hand with a hook 268 secured to the frame ofthe machine.

The cam 267 effects during approximately half the period of one revolution thereof the closing of the shears 18 while during the remaining time the shears are in open position under the action of a spring 266. The tongue presser 15 for closing the tongues provided at the end of the tube 9 is actuated by the shears 18 themselves in opposition to the action of the spring 60 Whenever the shears are closed.

The actuation of the second tongue presser 16 for clos- 10 ing the tongue serving for the actuation of the nipper 17 is eected also from the axle 49 and thus in dependence on the cam 267 described hereinabove, as shown in Fig. 30.

All the elements of the thread storing device are ar-` ranged on a table 270 which at each end thereof is guided by means of a guiding member 271 of trapezoidal crosssection in a dovetail groove of a bed 272 so as to be longi` tudinally displaceable, i, e. parallel to the

axles

23, 29, 28 and 49 in order that the elements of the thread storing device may be brought into the correct positions with respect to the bobbin tube 9 when these elements have to operate. As shown in Fig. 28 the table 270 is provided with a rigid extension 273 which is connected by means of a joint 274 with one end of a rod 275 substantially parallel to the table 270 the other end of which is connected by means of a joint 276 with one arm of an angular lever 277 swingably supported by the frame of the machine about an axle 278. The other arm of the angular lever 277 is connected over a joint 279 with one end of a rod 280 the other end of which is positively connected over another joint 281 with a lever 282 being swingable about an axle 283 supported by the frame of the machine and supporting for rotation a roller 284, the lever 282 being under the iniluence of a spring 285 so that it abuts against the perimeter of a cam 286. The spring 285 is attached with one end thereof to the lever 282, the other end of the spring 285 being suspended from a nook 287 secured to the frame of the machine. The cam 286, as all the other cams, is attached to the shaft 219 mentioned hereinbefore and the perimeter of the cam 286 is shaped according to the curve B shown in Fig. 31 so that the table 278 during each revolution of the shaft 219 is several. times moved to and fro in one and the opposite direction as the working phases require.

Each of the two beds 272 guiding the table 270, one of which only is shown in Figs. 28 and 29, is provided with a trapezoidal guiding rib 298 the longitudinal direction of which is at right angles to the longitudinal direction of the rib 271. The guiding rib 298 is guided for displacement in a corresponding dovetail groove 291 (Fig. 29) of the frame of the machine so that the table 270 by means of the beds 272 thereof may be moved, if desired, in a direction parallel to the winding spindle. To the lower side of each bed 272 a toothed rail 292 is secured which is engaged by a toothed sector 293 attached to a shaft 294 rigidly secured to a lever arm 295 connected over a joint 296 with one end of a rod 297 the other end of which is connected over a joint 298 with a lever 299 pivotable about an axle 300 supported by the frame of the machine. By the lever 299 is rotatably supported a roller 301 engaging under the inuence of a spring 302 the perimeter of a cam 303 secured to the shaft 219 mentioned hereinbefore. The spring 302 is connected with one end thereof to the lever 299 and with the other end to a hook 364 secured to the frame of the machine. The perimeter of the cam 303 is shaped according to the curve C shown Fig. 31 so that during any revolution of the shaft 219 several movements are imparted to the table 279 forward and backward in a direction parallel to the spindle in order that the operative elements of the thread storing device are brought into the required positions with respect to the bobbin tube 9 which has to be wound, or has been wound, with thread.

The shaft 219 carries a further cam (not shown) having a perimeter shaped according to curve A shown in Fig. 3l. This cam serves for imparting to the thread guide 13 a motion transversal to the tube 9 as shown in Figs. 16-26. During a winding of the bobbin tube 9 the thread guide 13 is adjacent to the curved surface of the tube or the already generated winding. However, during the operation of the thread storing device the thread guide 13 is imparted a certain distance from the tube, this distance being variable as shown in Fig. 22. This is achieved by the last mentioned cam.

It should be noted that in practice several winding spindles maybe arranged parallel to, and alongside one. another, in which case for each winding spindle a sepa-rate thread storing device has to be provided, these devices, however, being arranged on one and the same table 270, the

shafts

23, 29, 28 and v49 running through all these devices. Thus all thread storing devices `are actuated positively Vand synchronously and driven by the same cams.

By the aforedescribed means, .independently controlled by preset program, the automatic production of wound bobbins, particularly of cardboard tubes, isy provided.

What I claim is.:

1. Methodof making a wound bobbin, particularly a wound cardboard tube, comprising the stepsof `placing an empty bobbin vtube in front of a winding spindle, introducing a controllable clamping part of the spindle into the bobbin to clamp same, securing the starting thread, Winding the. tube, securing the thus .effected final thread, cutting .the thread, releasing the `clamping part, and retracting. the Vsame into the spindle, in= that it is Withdrawn from the wound tube which thus becomes-free.

2. Method as claimed in claim l, comprising the additional steps of introducing the clamping part ofthe winding spindle at first only so far into the bobbin tube to clamp this, that the free end of the tube projects beyond the clamping part to carry out the securing of the starting thread end, whereas for the winding operation the clamping part is relaxed and, upon accurate symmetrical adjustment of ythe bobbin tube in relation to the winding member, again tensioned, and the tube thereby clamped in its winding position.

3. Arrangement for making a wound bobbin, comprising, in combination, a winding spindle, a stationarilytsupported and rotatably driven bush, and a clamping part introduced therein to clamp the bobbin tube, saidclamping part capable of being axially displaced between a retracted position in the bush and a position projecting from it, and controllable in such a way that the bobbin tube is rmly clamped.

4. Arrangement as claimed in claim 3, said clamping part of said winding spindle including two members axially displaceable with respect tothe bush, one of said members having an expandable part and the other an expander part adapted to influence the rst part.

5. Arrangement as claimed in claim 4, said expandable part form-ing one extremity Vof a sleeve displaceably arranged in said guide bush and rotatably connected thereto, the other extremity being connected to a .control member for operating the axial displacement.

6. Arrangement as claimed in claim 4, the expander part including a part displaceable in the spindle bush, one end -of said part having an expander-head cooperating with the expandable part, the other end thereof being connected to a control member for operating the `endwise displacement.

7 Arrangement as claimed in claim 6, said part carrying at its rear end a cap with a tubular extension terminating in a shoulder which engages over therear end of the spindle bush, a spring being inserted between said cap and rear` face of the spindle bush, said shoulder cooperating with ,the control lever for displacing said `part with respect to the spindle bush.

S. Arrangement as claimed in claim 3, a thread securing apparatus having a cutting member for producing cuts on :the bobbin tube to secure the thread, a thread clip associated with the thread guide of the winding machine, a thread gripper and shears, said lmembers being so controlled that the cutting member produces a cut inthe middle section ot-the empty bobbintube clamped on the windingmachine, the thread clip being then-caused to lead the starting thread into` the cut to secure it, whereupon, with bobbin wound, the cutting member makes a cut at the free end thereof, the thread clip then introduces the nal thread end into the cut to secure it,

and now the thread gripper clamps the thread between the cut in the tube and the thread guide of the winding m-achine, and the shears sever the thread.

9. Arrangement as claimed in claim 8, the thread securing apparatus including a cutting member for itself producing risingtongues from the periphery of the bobbin tube, a .thread clip associated with the thread guide of the winding machine, a thread nipper, at least one tongue presser, and shears, said .parts being so controlled that the cutting member cuts a tongue in the middle section of the empty bobbin clamped on the winding spindle, and bends the tongue away from the tube periphery, the thread nipper then laying the starting thread .on the tongue while the thread is held clamped, whereupon, `with wound bobbin, the cutting member cuts a tongue at the free extremity of the tube, and bends the tongue away, the thread clip then laying the final thread end on to the tongue, and the tongue presser again presses the tongue down flush with the periphery of the tube to thus secure the end thread, whereupon the thread is clamped by the gripper between bobbin tube and thread guide and severed by the shears.

10. Arrangement as claimed in claim 8, the members of the thread securing apparatus carrying out lthe ldifferent functions being mounted on the frame of the apparatus, a plurality of control members for said member of the thread securing apparatus, and further control members moving said apparatus as a whole.

l1. Arrangement as claimed in claim 8, the cutting members including a knife introducible `into the bobbin tube and a counter-knife led along outside on the tube, whereby the knife vmakes the cut on the tube from inside to outsideand bends the cut tongue outwards, away from the material of the tube.

12. Arrangement as claimed in claim 11, the knife being formed as a lever, and a block swivably supporting said lever, said blade being mounted fast on the apparatus frame and forming the counter-knife.

l3. Arrangement as claimed in claim 8, the thread clip comprising two nippers, one of which is formed as a lever mounted for swivelling about a control axle on the apparatus stand, while the other can swing on the former by a control axle on said stand and independent of the control axle of the former nipper.

14. Arrangement-as claimed in claim 13, the second nipper mounted for swivelling on the rst one being biassed by a spring which tends to keep the nippers closed.

15. Arrangement as claimed in claim 14, the spring being at one end attached to the nipper formed asalever and at the other end to ka rod which can berpushed on said lever, one end of said rod engaging the-swing nipper, while the other end cooperates with an arm of the respective control axle.

16. Arrangement as claimed in claim 15, said nippers being shaped so that, in their closed position, the-thread is loosely held and guided.

17. Arrangement as claimed in claim 8, the thread securing .apparatus including two tongue pressers for pressing down the cut-in and bent up tongues, one for the starting and theother for the final thread end. t

18. Arrangement as claimed in claim 17, the tongue presser for pressing-down the tongue to secure the final thread being operatively connected to the thread gripper.

19. Arrangement as claimed in claim 17, said tongue presser being operatively connected to the shears.

20'. Arrangement as claimed in claim 8, and a common control'axle actuating said thread gripper and said-shears.

21. Arrangement as claimed in claiml 8, one part of the shears being-.fixed to the stand of the apparatus, the other partbeing swingable by its control axle on the first part into the closed and open positions.

22. Arrangement as claimed in claim 21, and a spring biasing the movable blade of the shears. said spring tending to keep the shears open.

23. Arrangement as claimed in claim 19, the tongue 13 presser for pressing down the tongue to secure the final thread being arranged beside the shears and projecting with a driver into the path o1. the movable shear blade in such a way that the closed motion of the shear blade causes the tongue presser to be moved into operative position.

24. Arrangement as claimed in claim 8, one part of the thread gripper being Xed on a stand of the apparatus, while the other part can be swung by its control axle on the first part into the open and closed positions.

25. Arrangement as claimed in claim 24, and a rubber sleeve forming part of the clamping part mounted for swivelling on the stationary part of the thread gripper.

26. Arrangement as claimed in claim 24, the movable clamping part of the thread gripper being spring-biassed 14 so as to tend to keep the thread gripper in the closed position.

27. Arrangement as claimed in claim 8, the tongue presser for pressing down the tongue to secure the starting thread end being arranged beside the thread gripper, and a driver projecting from its movable part into the path of the tongue presser so as to cause the latter to move into operative position by the opening movement of the thread gripper.

References Cited in the le of this patent UNITED STATES PATENTS 544,949 Booth Aug. 20, 1895

Claims

1. METHOD OF MAKING A WOUND BOBBIN, PARTICULARLY A WOUND CARDBOARD TUBE, COMPRISING THE STEPS OF PLACING AND EMPTY BOBBIN TUBE IN FRONT OF A WINDING SPINDLE, INTRODUCING A CONTROLLABLE CLAMPING PART OF THE SPINDLE INTO THE BOBBIN TO CLAMP SAME, SECURING THE STARTING THREAD, WINDING THE TUBE, SECURING THE THUS EFFECTED FINAL THREAD, CUTTING THE THREAD, RELEASING THE CLAMPING PART, AND RETRACTING THE SAME INTO THE SPINDLE, IN THAT IT IS WITHDRAWN FROM THE WOUND TUBE WHICH THUS BECOMES FREE.

3. ARRANGEMENT FOR MAKING A WOUND BOBBIN, COMPRISING, IN COMBINATION, A WINDING SPINDLE, A STATIONARILY SUPPORTED AND ROTATABLY DRIVEN BUSH, AND A CLAMPING PART INTRODUCED THEREIN TO CLAMP THE BOBBIN TUBE, SAID CLAMPING PART CAPABLE OF BEING AXIALLY DISPLACED BETWEEN A RETRACTED POSITION IN THE BUSH AND A POSITION PROJECTING FROM IT; AND CONTROLLABLE IN SUCH A WAY THAT THE BOBBIN TUBE IS FIRMLY CLAMPED.