US2382760A - Warping machine - Google Patents

Description

1945- G. WIGGERMANN ,7

. WARPING MACHINE Filed March 6, 1941 s Sheets-Sheet 1 1945 G. WIGGERMANN 2,382,750

WARPING MACHINE Filed March 6, 1941 s Sheets-Sheet 2 Aug. WIGGERMANN v WARPING MACHINE Filed March 6, 1941 s Sheets-Sheet s Patented Aug. 14, 1945 WARPING MACHINE Georg Wiggermann, Gladbach-Rheydt, Germany; vested in the Alien Property Custodian Application March 6, 1941, Serial No. 381,952

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19 Claims.

The invention relates to warping machines, in which either the beam or the pressure roller is driven. In machines of this type, the warping beam is usually journalled stationarily, whereas the pressure roller, which is positively driven is movably supported either in swinging arms or on a slide bearing. A regulatable friction resistance device is then inserted in the path of the pressure roller. The swinging arm support is a simpler solution of the problem but possesses certain inconveniences insofar as, owing to alermany January 25, 1940 on the other hand, the friction resistance device can be turned as a whole without alteration of its resistance, it is possible to carry out the movements of the beam swing by means of a motor. This motor may be controlled by means of a. hand switch or press button, or by the stop motion device, whereby these operations are considerably simplified. The motor may further teration of the turning moment of the swinging arms, the pressure existing at the line of contact between beam and pressure roller alters. This alteration of the pressure becomes especially noticeable if the driving motor for the pressure roller is oscillated at the same time, that is, if the turning moment of the swinging arms is still further increased.

The object of the invention is to produce a warping machine, in which, notwithstanding the journalling of the pressure roller on swinging arms, the pressure in the line of contact between the beam and pressure roller remains always invariable. This is effected chiefly by mounting the warping beam as well as the pressure roller on swinging arms and pressing them together by means of a regulatable friction resistance device in such a manner that any alteration of position of the axle of the beam or of the roller can take place only by overcoming the friction resistance. This arrangement makes it further possible to connect one half. of the friction resistance device with a worm drive so that, by turning the friction resistance device, the beam can be run in and out, that is, moved towards or away from the pressure roller, by means of racks hingedly mounted in known manner on its swinging arms; whereas, in the usual forms of construction, the friction resistance device had first to be lifted off for this operation. A single actuation is therefore sufiicient for running in the beam, the winding of the beam being then effected under any desired previously adjusted pressure. The advantage is, however, further obtained in that the motor is no longer to be mounted on the swinging arm itself but at the rocking axis thereof and the force is transmitted from thence to the shaft of the beam or of the roller.

A particular advantage of the invention is that the running in and out of the beam can take place automatically. Since the pressing pressure remains uniform, an accurate positioning of the beam as it is run is no longer necessary, and as,

serve to rock the beam when the diameter increases. According to the inventiomthis movement is controlled from the pressure roller in that the outward movement of this roller by the accumulating thread warp is transmitted to the switch of the motor so that, owing to the outward rocking of the beam, the pressure roller always returns again into its initial position.

With this mechanization of the chief moving procedure, it is no longer necessary to take into consideration the easy accessibility of the running-on point where the thread warp comes into contact with the beam; nor are additional auxiliary elements required, to bring the beam into a position favorable for the re-knotting of threads. Consequently,v the movement of the beam, in further development of the invention, can be restricted to the second quadrant and therewith the whole design of the machine can be simplified. The relative movement of the axles of the beam and of the pressure roller associated therewith would result in most known machines in especially unfavorable conditions for the uniformity of the pressing pressure. According to the invention on the other hand, not only is the pressing pressure kept uniform, even if beam and pressure roller are in the most unfavorable mutual position, but it is also possible to adjust this pressing pressure within very wide limits. For instance, the loading of the pressure roller may be effected through the intermediary of rocking levers, so that alterations of the pressure in the line of contact between beam and pressure roller caused by alteration of position of the axles are equalized by shifting of the contact points of the rocker levers.

If the movements take place by means of flowing pressure medium acting in suitable control cylinders, the medium is, according to the invention, employed at the same time to produce the pressing pressure between the beam and pressure roller. For this purpose, the cylinder acting for instance upon the swing arms of the pressure roller is connected to an automatic regulating valve, so that the pressure existing in the loading cylinder remains always uniform independently of the positions of the piston. The

desired winding pressure during warping can therefore be adjusted and regulated according to the indication of a pressure gauge.

In order to prevent any excess pressure, if the beam rocks out past the normal end when a flowing pressure medium is used, the cylinder acting upon the swing arms is preferably equipped with a pressure equalizing conduit, short-circuiting the cylinder sides. In a similar manner, when the movement of the beam is mechanically controlled, the occurrence of an undesired pressure between warping beam and its depositing point may be prevented by making the connection between the beam journalling and the 'drive means for rocking the same act positively only in one direction. The part of the drive which then continues to move freely can be arranged so that it automatically stops the drive.

Finally, the swinging movement in regulating gears built according to the invention is utilized for the adjusting of the gear which maintains the circumferential speed of the beam uniform notwithstanding the increasing diameter.

Several embodiments of the invention are illustrated by way of example in the accompanying drawings, in which vFig. 1 shows a warping machine embodying the invention in a somewhat diagrammatic side elevation;

Fig. 2 is an elevational view of a part of Fig. I seen from the rear with parts in section;

Fig. 3 is a diagrammatic side elevation of another embodiment showing the swinging of the beam by means of a control motor influenced by the pressure roller;

Fig. 4 is a diagrammatic side elevation of another such embodiment showing a construction employing a fluid medium for the swinging of the beam and the production of the predetermined loading;

Fig. 5 is a diagrammatic side elevation of still another embodiment employing a fluid medium;

and

Figs. 6 and 7 are sectional views showing details of the construction shown in Fig. 5.

Elements with similar functions are designated by similar reference characters. As can be seen from the drawings, the control impulses are derived from the pressure roller in the forms of construction shown and transmitted onto the beam; it is, however, clear for anyone skilled in the art that the operation may be carried out conversely. It is also evident that all control operations may be derived from one or both swing arms of the pressure roller and transmitted to one or both swing arms of the beam, or conversely.

The warp beam may be equipped with a continuous shaft or clamping hubs, which permit centering it on the axle l of the beam. By a tube, which if desired may have perforations, the discs 3 of the beam are connected to one another. In the form of construction shown, the beam is journalled in swing arms 4, which form a fork together with the strong shaft Ii connecting them. The beam is driven by a sprocket wheel I revolving on shaft 6 by means of a chain 6, which drives a sprocket wheel 8 coupled with the hub of the beam. The chain drive is enclosed in tubes (not shown).

By a bar 8 having teeth in its lower side at its free end, any swinging movement of the beam is transmitted in known manner to a pinion l0 fixed on a shaft II, this shaft being adapted to be turned by means of a hand wheel I! through the intermediary of a worm wheel I! and worm The pressure roller i5 is also movable and mounted in the form of construction illustrated in swing arms l8 rigidly connected by a, shaft l8. By means of a lever system l1, i9, 20, every swing movement of the pressure roller I5 is transmitted to a fork 2|, which is fixed at one end to a rockably mounted shaft 22, to which the lever arm 20 is also fixed. The other end of fork 2| is connected to a, pressure ring 23 of a multidisc clutch 24. The toothed discs of the clutch 24 engage in a bush connected with the worm wheel l3. The coupling pressure is regulated by a weight 25 shiftable on the lever arm 20.

The pressure in the line of contact between the beam and pressure roller, which, during warping, is produced by the pushing apart of beam and roller by the accumulating warp, owing to the connection of both through the friction clutch, always corresponds to the frictional pressure adjusted by the weight 25. Without the necessity to alter this pressure in any way, the beam may, on the other hand, be run out (that is, moved away from the pressure roller) by hand, by means of the worm gear l3, [4; whereas, a turning of the outer clutch bush fixed on the worm wheel I3 from the shaft ii is prevented by the worm gear connection.

When running-in the beam (that is, bringing itup to the pressure roller), no pressure increase in the line of contact can occur by the running-on of the pressure roller, as a swinging away of the pressure roller can only take place by overcoming the frictional pressure of the clutch, the clutch discs slipping, relative to each other when this pressure is overcome.

In the examples shown in Figs. 3 and 4. the swinging points of the arms 40. and 4b of the P beams are arranged above the point at which the control rods or bars 9a and 8b respectively act. All movements of the beam take place exclusively in the second quadrant, that is, in the space between the perpendicular and the swung oif position of the swing arms,

Fig. 3 illustrates firstly the employment of a control motorji for the movements of the beam, which motor acts through a friction clutch 26 upon the worm gear lta, Ma and moves the arm 4a by the turning of the whole resistance device through the spur wheel lfla and the rack 9a. The connection of the motor 3i to the current supply line for rotation in one direction or the other is effected through one of the switches 33, 36, either by means of the hand switch 32 or by the swing arm Ilia oi the pressure roller Ilia, through intermediate elements 35, 36, 31, 38, or by the cut-out switch operated by press knob controls on warping machine and bobbin frame.

As shown in Fig. 3, the roller 36 of the intermediate elements is thrust by spring pressure against the cam disc 37. By means of a rod 39 hingedly connected with the swing arms 5a of the beam, the cam disc 31 is turned, when the position or slope of the line of pressure passing through the axis of the beam and pressure roller is altered.

The loading of the pressure roller is effected in the construction shown in Fig. 3 by a spring 42 adjustable by means oi a hand wheel 4!. The adjusted pressure can be read on a scale 43 according to the position of a hand 44.

The swinging of the pressure roller l5a causes the common contact point of the levers 41, 48 to be correspondingly displaced.

' The connection ofthe swing arm 4a with the control rack bar 9a is effected by a slot 21 at the left hand end of, the rack bar 9a, so that the connection between the Journalling of the beam and the drive controlling its swinging movement is in force transmitting contact only in one direction. As soon therefore as the beam, during its swinging movement, strikes against the depositing point on the floor or on the conveying means, the force transmitting contact is suspended. The rack 9a, continuing to move, actuates the switch 28 and therefore completely cuts out the drive.

The operation of the construction shown in Fig. 3 is in deta l as follows:

After the beam 3a has been mounted between the swing arms ta, as shown in Fig. 3, and the yarn warp has been fixed on the beam, the motor 3! is switched in through the intermediary of the push knob control or the lever 32, whereby the beam is run in against the pressure roller i511. In the line of contact between beam and pressure roller, there then exists the adjusted pressure indicated by hand it and corresponding to the actually desired winding tightness. Owing to the automatic checking of the worm gear i3a, I ia, the movement of the arms 4a is blocked. The yarn warp running on during the warping therefore pushes the pressure roller l5a and the control roller 36 away towards the right, as shown in Fig. 3, closes the contact 33 and eifect's, through the motor 3!, worm gear l3a, I ia, toothed wheel We and rack 9a, a movement of the beam, in

.the form of construction shown towards the left.

Consequently, the control roller 36 and the pressure roller I5a return again into the normal position, the switch 33 opens and the swinging movement of the beam is interrupted again. As the beam diameter has further increased in the meantime, this operation repeats itself and continues until the desired circumference or the desired warp length has been attained.

Owing to the alteration of position of the-line of centers between axis of beam and axis of pressure roller, which may occur as a result of the mutual position of beam and pressure roller selectedin the embodiment shown by way of example, the pressure in the line of contact between the two would alter also. However, on account of the rotation of a cam disc 31, the position of roller 36 is altered and current is supplied to the motor 3! for a longer time. The beam is, therefore, swung farther to the left, so that the pressure roller can follow the beam and ascend accordingly in the embodiment shown. At this swinging movement of the pressure roller I5a, the contact point of the shiftable levers 41, 48 is shifted, so that the pressure indicated by the hand 44 is maintained in the line of contact between beam and roller.

When a thread breaks, the switch 34 is closed by the current of the stop motion, through the intermediary of a time switch, until the beam has moved from the pressure roller 15a as far as is necessary for tying the broken thread. In similar manner, the beam is automatically swung outwards to the position where it is deposited on the carriage 5|, as shown in Fig. 4, when the warp thread length has been attained, by the stopping arrangement of the machine.

The hand switch 32 makes it possible for the attendant at any time to sensitively move the beam in one direction or the other'through the intermediary of the motor, or to stop it.

The embodiments, according to Figs. 4 and 5,

show how the same proceedings can be controlled, for instance hydraulically, by employment of fluid media.

In the embodiment shown in Fig. 4, the control rod 8b of the swing arm 4b is connected with a piston 62 guided in a cylinder 53. A slide valve 54 connects the cylinder with the admission or discharge conduit 55, 58. The controlling of the slide valve is effected, in the embodiment illustrated, from the pressure roller I5b by means of an arm 38a connected with the swing ar mlfib of the roller, or from a control relay 58 influenced by the pushknob switch, stop motion, or cutout switch of the machine.

The loading of the pressure roller 45b is effected by a pressure piston 31 in accordance with the pressure in the cylinder 52. A regulating valve 63 maintains the pressure in the cylinder 62 independently of the position of the piston 6|, in that it connects the cylinder 62 with one of the conduits 55 or 56 when the pressure is above or below that set by the pressure gauge 6 The piston BI is connected with the pressure roller 68, in the embodiment illustrated, by a rod 69 and guided with the swing arm t of the beam by rods 65, 66 guided in a slot 61. The pressure roller I5b returns always into its initial position, after it has efiected, by arm 38a and slide 54 a rocking of the swing arms 6b of the beam corresponding to the increasing diameter of the warp of the beam according to above explained movements. The shape of the lever 48a. is selected so that the pressure indicated by the gauge 66 is maintained in the line of contact between the beam and roller, and also so that the stresses in rods 66, 66, will remain substantially constant regardless of the position occupied by roller 68 on the lever. As the slope of the line of pressure passing through the beam axle and pressure roller axle alters with the rocking of the beam, and as, on the other hand, the pressure in the cylinder 62 remains constant, the loading of the pressure roller l5b must also be altered according to the alteration of position of said line of pressure. This is attained by the shifting of the pressing roller 68 on the arm 48 owing to the shape of slot 61.

Figs. 5, 6, and 7 illustrate an embodiment of .the invention, in which the warp beam is moved through the first and second quadrant in the manner much used up to the present, whereas the embodiments shown in Figs. 3 and 4 may be employed with advantage also for movement in the other quadrants, for instance suspended mounting of the beam.

The control rod is in this instance hinged above the axle 5c of the swing arm 40 and connected with a piston H guided in a cylinder 12. The movement of the piston is controlled by the slide valve 54a. This slide valve can connect, according to its position in a slide box 13, as shown in Fig. 6, the conduits 55a, 56a with conduits 14, 15 leading to the cylinder 12, as soon as the control slide 54 has been actuated from the pressure roller I50 through the intermediate elements I60, 51, or by the hand switch 32a, or by the control relay 58a. In the mutual position shown in Fig. 5, a comparatively slight oscillation of the power station from the axles of beam and pressure roller occurs.

In order to provide an easy depositing of the beam, and to prevent the occurrence of an excess pressure, the cylinder 12 is equipped with an equalizing conduit 84, as shown in Fig. '1, which short-circuits the two ends of the cylinder when the piston has completed a travel :1: corresponding to the growth of the beam to the'desired diameter. At the running-in oiv the beam, a check valve 85 causes the overflow conduit to remain out of action in this direction of move- 5 merit.

Finally, it is shown in Fig. 5 how the swinging movement of the arms 40 oi the beam can be utilized to maintain uniform the circumferential speed of the beam, especially if the regulating gar is arranged on the swing arm lc. With this object in view, for instance the adjuster of the regulating gear, a regulating motor Bl or the like may be hingedly connected by rods 82, 83 with the swing arm 40 so that, according to the i5 alteration of angular position of arm 4c, the ratio of transmission is automatically altered.

It is evidently also possible to make the arrangement so that, when the pressure roller lie is driven, the adjuster oi the regulating gear controlling the driving speed is operated by the swinging movement of the arms.

What I claim as my invention and desire to secure by Letters Patent of the United States is:

1. In a warping machine, a beam element, a 1:5 pressure roller element coacting with said beam element, means for rockably supporting each of said elements, a driving means arranged coaxially with the rocking axis or one of said ele-- ments and drivingly connected with said latter 3n element, means for pressing said elements together with a predetermined pressure, said last means arranged so that its resistance must be overcome to alter the relative position of said elements, friction resistance means, rack and pinion means connecting the rockable support of said driven element with said friction resistance means, and means including said friction resistance means to move said driven element through the intermediary of said rack and pinion means.

2. In a warping machine, a beam element, a pressure roller element coacting with said beam element, means for rockably supporting each of said elements, a driving means arranged 00- axially with the rocking axis of one of said elements and drivingly connected with said latter element, means for pressing said elements together with a predetermined pressure, said last means arranged so that its resistance must be 0 overcome to alter the relative position of said elements, friction resistance means including a rack and pinion for connecting the rockable support of said driven element with said friction resistance means, means including said friction 65 resistance means to move said driven element through the intermediary of said rack and pinion means, and a motor for operating said means to move said driven element.

3. In a warping machine, a beam element, a pressure roller element coacting with said beam element, means for rockably supporting each of said elements, a driving means arranged coaxially with the rocking axis of one of said elements and drivingly connected with said latter element. for pressing said elements together with a predetermined pressure, said last means arranged so that its resistance must be overcome to alter the relative position of said elements, friction resistance means including a rack and pinion for connecting the rockable support of said driven element with said friction resistance means, means including said friction resistance means to move said driven element through the intermediary of said rack and pinion means, a motor for operating said means to move said driven element, and a switch for cutting out said motor actuated by the movementoi the rockable support of said driven element.

4.,In a warping machine, a beam element, a pressure roller element coacting with said beam .element, means for rockably supporting each of said elements, a driving means arranged coaxially with the rocking axis of one of said elements and drivingiy connected with said latter element, means for pressing said elements together with a predetermined pressure, said last means arranged so that its resistance must be overcome to alter the relative position of said elements, friction resistance means including a rack and pinion for connecting the rockable support of said driven element with said friction resistance means, means including said friction resistance means to move said driven element through the intermediary of said rack and pinion means, a motor for operating said means to move said driven element, and switch means operated by the rocking of said other element to control the supply of current to said motor.

5. A warping machine as described in claim 4, wherein the rocking movement of said driven element is restricted to the second quadrant.

6. A warping machine as described in claim 1, wherein the means connecting the rockable support of said driven element with said friction resistance means include a connection adapted to transmit force positively in only one direction.

7. In a warping machine, a rockably-supported warp beam, a rockably-supported pressure roller coacting therewith, and means for pressing said roller and warp beam together with a predetermined pressure, said last means including at least one rocking lever and means for varying the effective leverage of said lever in accordance with the slope of a line passing through the centers of said warp beam and said pressure roller, whereby the pressure between said beam and said pressure roller is maintained uniform notwithstanding the change of the position of said line through said centers.

8. In a warping machine, a beam element, a pressure roller element coacting with said beam element, means for rockably supporting each of said elements, fluid pressure means adapted to act upon the rocking support of one of said elements to move the latter with respect to the other element, fluid pressure means adapted to press said other element against said first element with a uniform pressure, and means controlled by the rocking of the support or said other element for operating said first fluid pressure means.

9. A warping machine as described in claim 8, comprising an automatic regulating valve and a pressure gauge connected with said valve so that the pressure with which said elements are pressed together can be adjusted and continuously read.

10. A warping machine as described in claim 8, wherein said first fluid pressure means is provided with an equalization conduit adapted to interconnect its cylinder spaces at both sides of its piston when the latter passes a given point.

11. A warping machine as described in claim 8, comprising driving means for rotatably driving one of said elements, a regulating gear for controlling the speed at which said driven element is rotated, and means for controlling said regulating gear by the movement of the element rocked by said first fluid pressure means.

12. In a warping machine, a swingably mounted beam element upon which sheet material such as warp yarn is adapted to be wound, a swingably mounted pressure roller element coacting with said beam element, means for rotatably driving one of said elements to cause said material to be wound on said beam element, means for yieldingly pressing one of said elements toward the other, means cooperating with said other element for resisting a predetermined pressure of said pressing element, and means controlled by said pressure resisting means for permitting said beam element away to rock from the pressure roller element an amount corresponding to the increase in diameter of the material on the beam element.

13. A machine as described in claim 12 wherein said pressure resisting means includes a slip coupling, rack and pinion means connecting said coupling with one of said elements, and worm gear means for turning said coupling to move said connected element through the intermediary of said rack and pinion means.

14. In a warping machine, a beam element, a pressure roller element coacting with said beam element, means for rockably supporting each of said elements, a driving means arranged coaxially with the rocking axisv of one of said elements and drivingly connected with said latter element, means for pressing said elements together with a predetermined pressure, said last means arranged so that its resistance must be overcome to alter the relative position of said elements, friction resistance means including a rack and pinion for connecting the rockable support of said driven element with said friction resistance means, means including said friction resistance means to move said driven element through the intermediary of said rack and pinion means, a motor for operating said means to move said driven element, said means connecting the rockable support of said driven element with said friction resistance means including a connection adapted to transmit force positively in only one direction, and switch means for cutting off said motor adapted to be operated by the rockable support of said driven element when the latter reaches a certain position.

15. In a warping machine, a swingably mounted beam element upon which sheet material such as warp yarn is adapted to be wound, a swingably mounted pressure roller element coacting with said beam element, means for rotatably driving one of said elements to cause said material to be wound on said beam element, means for yieldingly pressing one of said elements toward the other, and means cooperating -with said other element for resisting a predetermined pressure of said pressing element, said last means permitting said beam element to rock away from the pressure roller'element an amount corresponding to the increase in diameter of the material on the beam element when said predetermined pressure is exceeded.

16. In a warping machine, a, swingably mounted beam element upon which sheet material such as warp yarn is adapted to be wound, a swingably mounted pressure roller element coacting with said beam element, means for rotatably driving one of said elements to cause said material to be wound on said beam element, and means for permitting each of said elements to swing about its respective swing axis in response to the pressure produced by the increasing diameter of material wound on said beam element.

17. A warping machine according to claim 16 in which the swinging movement of one of said elements operates said last-named means to control the swinging movement of said other element.

18. In a warping machine, a swingably mounted beam element upon which sheet ma-'- terial such as warp yarn is adapted to be wound a swingably mounted pressure roller element coacting with said beam element, means for rotatably driving one of said elements to cause said material to be wound on said beam element, a let-01f device for resisting the swinging movement of said beam element away from said roller element, and means controlled by the swinging of said roller element for initiating the operation of said let-off device.

19. In a warping machine, a swingably mounted beam element upon which sheet material such as warp yarn is adapted to be wound, a swingably mounted pressure roller element coacting with said beam element, means for rotatably driving one of said elements to cause said material to bewound on said beam element, a. let-ofl device for resisting the swinging movement or said beam element away from said roller element, and means actuated by the swinging movement of said roller element for controlling said let-of! device.

GEORG WIGGERMANN.

Certificate of Correction Patent No. 2,382,760. August 14, 1945.

GEORG WIGGERMANN It is hereby certified that errors appear in the printed specification of the above numbered patent requiring correction as follows: Page 4, first column, line 66, before the Words for pressing insert means; page 5, first column, line 12, for away to rock read to rock away; line 16, for the claim reference numeral 12 read 15; and that the said Letters Patent should be read With these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 9th day of November, A. D. 1948.

[SEAL] THOMAS F. MURPHY,

Assistant Commissioner of Patents.

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