US1721280A - Electric individual drive for spindles - Google Patents

Description

July 16, 1929. r w. PEINEKE ELECTRIC INDIVIDUAL DRIVE FOR SPINDLES Filed March 17. 1928 -2 Sheets-Sheet l WM M 16, 1923-v w. PEINEKE 1,721,280

ELECTRIC IND IVIDUAL DRIVE F 0R SPINDLES Filed March 17, 1928 2 Sheets-Sheet 2 Pat nted July iegiegs.

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ELECTRIC INDIVIDUAL DRIVE FOB SPINIDIiEB.

Applicatioa fl1ed much 17, was, ,Scrial no. 202,404, and in Germanyjaroh :4, 1m;

My invention relates to an electric individual drive for the spindles of spinning machines, artificial silk centrifugals, spinn n pots and other bodies revolving at big to mechanical damage.

speeds. In mechanical drives of this kind the rotation of the driving machine is generally transmitted tov the spindle or the like by means of pulleys and belts or cords. When the electric drive was adopted the pulley on the spindle was replaced by an electric mo-- tor and the shaft of this motor was joined to the spindle. The motor which in this design of the machine is located above the spindlerail is rather in the way of the working spindle; ly soiled by fiufi and dust and is also exposed tremely high speeds the bearing becomes very hot and provisions must be made for cooling the bearing'as well as the entiremotor, since the motor is fed with alternating current of high frequency and becomes heated by far more than a normal motor.

My invention relatestoan electric individu'al' spindle drive with vertical shaft,

Y which is suitable for very'high speeds, of the or channels at the motor frame armature is,

v order of 20,000 revolutions per minute. My

invention consists in locating the electric motor, the upwardly extending shaft of which serves as spindle, underneath the spindle rail .and drawing the cooling air through ducts and the wall of the bearing and ejecting it into the atmosphere by means of' a screen disc mounted on the spindle shaft.

Since the fiy-wheel efiect of the bobbin placed upon the spindle and the motor as'a rule, very small. any small eccentric irregularity of the bobbin or spool becomes noticeable by the unsteady run 0 the spindle. Preferably the-spinning s'pin-' dle is rendered indifferent against such disturbing unbalances by an additional disc flywheel.

Since the spinning spindles are subject to considerable wear in consequence of their mit a convenient care must be taken to per replacement of defective spindles by other spindles, a large number of which is preferably kept in readiness. An easy exchange of the spinning spindles is according to my invention rendered possible by securing the spindle, inserted into a recess of the spindle rail in its working posiy gh sp vofloosening any screw connections.

It becomes, furthermore, quick- Owing to the explace of attachment located between the sp ndle and them'otor is elastic, so that the splndle revolving at a high speed is free to set itself in the correct working position. The complete spindle together with its motor may furthermore" be bodily removed from the spindle rail without the necessity The electric connection of the motor to the supply system is eflected by elastic contact memers against the busbars. Various embodimentsof my invention are lllustrated in the drawings aflixed-hereto and forming part of my specification. In these drawings Fig. Lrepresents an elevation; partly in section, of'my improved individualspindle drlve, T

2, a modified detail, and

Flg. 3, a further, modification of my improved drive. 3

Referring to Fig. 1 of the drawin 1 is which in the operativeposition abut the driving motor vertically mounte 'm an opemng of the spindle rail 3 by means of a flange 2. The shaft 4 of the motor is extended upward and designed as-sp'indle, being, for instance, provided with a tube 5 for spooling a' thread er'filament. The

spindle is journaled in the bearing 7. Since f the bearing 7 form closed channels or ducts 8. Above the bearing 7 is located the screen disc 9 which owing to the high speed of rotation has a strongly exhausting ,action and thus draws the air through the channels in the motor casing and the ducts in the bearmg so that the motor and the bearing are efliciently cooled. The disc 9 consists preferably of sheet steel and need not be provided with fan a high speed that even. the smooth surface entrains the air and a sufiicient circulation of .the air is set up in this way. c

In the design illustrated Fig. 2 the screen disc has a comparatively considerable blades as it revolves at such spin spindle is pushed into" the openin in the thickness, so that it acts like a flywheeland thus. com nsates any unbalanced condition of the spindle which may exist. To reduce mechanicalmaterial stresses the mass of the disc is reduced in thickness at the circumferenc'e.

Fi' 3 of the drawings shows a spinning (fie secured in easily exchangeable man nor in the spindle rail 13, and maintained in working position by springs 18. These s rings 18 are attached to the flan es-12 xed upon'the casing of motor 11 an e a recessed portion 16 in the spindle rail 13 when the spindle occupies its working position. The supply of current to the motor lace by means of the busbars 21 takes locate underneath the spindle rail '13. Against these bus bars 21 are placed the elastic contacts 22 connected to the terminals of the motor 11, so that the motor is at once connected to the busbars when the spindle rail. Upon the casing of t e motor 11 isalso mounted the push-button switch 23. The spindle 14 carrying the bobbin 15 is provided with a disc 19 acting as flywheel. The rotor of the driving motor 11 is not as in Fig. 1 freely'suspended, but is supported at the bottom in the lower bearing 20 of p the motor casing besides being journalled- .ing 20, the motor 11,' as well in' the spindle bearing 17 at the top. For the eflicient cooling of these two bearings andof themotor the cooling ribs upon th casin ofthe motor 11 are surrounded by a she or jacket 2i, so that closed channels or ducts are formed through which the cooling air sucked in by the dlsc'flywheel 19 sweeps and thus effectively cools the lower motor bearas the upper spindle bearing 17. a The elastic attachment of the spindle in the spindle rail enables the axis of the spindle to set itself in the correct position, which is of vital importance for the steady run of the spindle at the high velocities attained.

e arrangement illustrated in Fig. .3 has the further advantage that theentire electric attended current carrying parts is efl'ectively avoided.

is completely se arated from the spindle, so that the spin to, whileunintentional'contact wit Various modificationsand changes may be made without departing scope of the invention, and I desire. there'- fore, that only such limitations shall be pllzoed thereon as are imposed by-the prior 9.

. claim as my invention: 1. In an electric. high speed individual spindle drive, in combination, a spindle rail,

an electric ,,motor having an upwardly extended vertical shaft end servmg as "spinning spindle,

a bearing located betweensaid motor andsaid spindle and having air coolupon the end of the bearing 17 and engag emay be easil from the spirit and.

' spindle ing ducts provided at its outside, a shell enclosing said ducts and having a flange for attaching the entire drive to said spindle rail, and a screening disc mounted upon said shaft between the spindle and said bearing and adapted to draw air through the cooling ducts of said bearing.

2. In an electric high speed individual spindle drive, in combination, a spindle rail, an electric motor having an upwardly extending vertical shaft end serving as sp1nning spindle, a bearinglocated between said motor and said spindle having air cooling ducts provided at its outside, a shell enclosing said ducts and having a flange for attaching the entire drive to said spindle rail, and a screening disc mounted upon said shaft between the spindle and said bearing, said disc being designed as flywheel and adapted to draw air through the cooling ducts'of said bearing. Y

3. In an electric high speed individual spindle drive,-in combination, a spindle rail, an'electric'motor having an upwardly'extended vertical shaft end serving as spinning spindle, a bearing located between said motor andsaid spindle and having air cooling ducts provided at its outside, a shell enclosing said ducts andhaving two flanges, said spindle rail having an opening for receivin gthe drive between said two flanges, "springs mounted upon said flanges adapted to maintain thedriving device elasticallyvin posi tion, and a screen .disc mounted on the said draw air through the cooling ducts.

. 4. In an electric high speed individual spindle drive, in combination, a spindle rail, an electric motor having an upwardly extended vertical shaft end serving as spinning spindle, a bearing located between said motor and said spindle and having air cooling ducts provided at its outside, a shell enclosing said ducts and having two flanges, said spindle rail having an opening for re-' ceiving the drive between saidtwo flange springsmounted upon said flanges adap to maintain the device elastically in position, and a screen disc mounted on the said adapted to draw air through the cooling ducts, ,elastic' contact elements mounted upon the motor frame and being motor winding, and bus bars located underneath the spindle rail against which said elastic contacts are adapted to abut plying the motor with current.

drive, in combination, a spindle rail, an electric motor having an upwardly extended vertical "shaft end serving as. spinning spindle, a shell surrounding the motor and being spaced from the motor to form pitssages' for cooling air, a bearing located tween said motor and said spindle and connected to the for sup-' an electric high speed individual bein provided at the for t e cooling air,

having an opening 5 ing device betweensaid outside with ducts a shell surrounding said said spindle rail flange and said motor, said flange forming a continuation of the shell surrounding and said motor, a screen said bearing ducts disc mounted on the i spindle above the said bearing and adtft d to-draw the air through the ooolin of the bearing as well as through e passages formed between said shelland the motor. casing. a t

In testimony whereof I my WILHELM PEINEKE,

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