US2180761A - Control device for cleaning machines for textile materials - Google Patents

Description

Nov. 21, 1939. J, MElER Q 2.180,?61

CONTROL DEVICE FOR C LEANING MACHI NES FOR TEXTILE MATERIALS Filed Feb. 23, 1938 Patented Nov. 21, 1939 2,180,761 v v CONTROL DEVICE FOR: CLEANING CHINES FOR TEXTILE MATERIALS Josef Meier, Winterthur, Switzerland, assignor to the firm Actiengesell's cha ft 'Joh. Jacob Rie- 1 t -ter & Cie, Winterthur, Switzerland Application February 23, 1938; Serial No. 192,192

In Germany January 2, 1937 r r 5 Claims.

This invention relates to control devices for opening and cleaning machines for textile materials.

According to this invention, the control of coupling means between successive parts of the machinery is effected by a control device through the intermediary of mechanical expedients and a cooperating cylinder and piston means operated by a gaseous or liquid operating medium of a telemotor system.

By means of a power transmission device of' this kind, the operation of parts in any portion of a textile opening and cleaning machine can be conveniently regulated to any desired extent,

so that a gradually or rather rapidly increasing speed of a particular part can be obtained, in contrast to known electric arrangements which must be made more powerful throughout and thus are more expensive according to the effort required to be produced.

In using pistons included in cylinders, all that is necessary is to increase or decrease the size of the piston end surface and to vary the flow-area of the supply piping in adaptation to the speed of operation desired to be obtained. The piping for the conduction of gaseous or liquid operating medium is all fixed in position in distinction from rope drives and the like- Furthermore, the diameter of the piping can be made small, so that the pipe arrangement as such can be conveniently controlled, when attending the machine; and is not susceptible to damage by mechanical influences. For these reasons the pipe arrangement is not likely to cause disturbances.

If, however, disturbances should occasionally arise the souroe thereof can be easily traced even by unskilled operators, since the place where the operating medium'leaks out can be readily discerned, whereas, for example, in electrical arrangements the work of tracing the source of disturbance is complicated and requires the employment of skilled labor.

The cylinder and piston means 'used as elements of the telemotor system, as well as the valve means required for the purposes of the invention, can be manufactured in very simple manner, all of which contributes toward rendering the machine economical. The device according to the invention has the special advantages that the cylinders used are subjected to the pres- 1 sure of the operating medium only at one end thereof and that the piston is reset by spring action. By this means the employment of a second connecting pipe line can be dispensed with, so that the valve arrangement is considerably simplified. Naturally, if a second supply conduit were provided, it would have to be connected with the other end of the cylinder and controlled by separate'valves, but according to this invention, such second supply line and control means is unnecessary. I

Advantageously, in the device according to the invention the valves are electrically operated,'in which way, the operationof the control means is expedited, which is particularly advantageous when the machines concerned are located a con.-

siderable distance away from each other. In the accompanying drawing which illustrates an embodiment of the invention by way of example only:

Fig. 1 is a schematic view of an aggregate composed of a bale opener associated with a preliminary opener; a

. Fig. 2 is a schematicview of an aggregate composed of a hopper feeder associated with a scutcher; I

, Figs, 3 and 4 are schematic sectional views of mechanical expedients ofthe telemotor system,

and

Fig. 5 is a wiring diagram of an electric system for initiating the control movements of the telemotor system.

Referring to Fig. l of the drawing, the bale opener l is provided with loose and fixed pulleys 3 and 4 respectively which are driven by the succeeding preliminary opener which is provided with a driving pulley S-about which a drive belt 6 is slung which is controlled by a belt shipper fork. 8, as shown in Fig. 4. t The belt shipper fork 8. is connected to a rod 9 the other end of which carries a piston Ill. -The.piston Ill is arranged in a cylinder ll and is acted upon by a compression spring l2. s The raw materialv to be opened is conducted through a conduit 1.3 from the preliminary opener .2 into a hopper feeder 14 which is succeeded by the scutcher I5 provided with a rolling device. Driving motion is imparted tothe feed cylinder IS in the scutcher I 5 in a known manner, as indi cated inFig. 3 (the plane of which extends perpendicular to that of Fig. 2), by means of disengageable toothed coupling portions ll, 18. The coupling portion [8 is controlledby a bell crankv lever 19 which is loaded by a tension spring 22 and engages witha rod 20 carrying a piston 2| which is arranged in a cylinder 23. feeder l4 includes a sensing means or control member 25 similar to a regulating feeler of a known-type. The cylinders II and 23 are connected with a pressure vessel 26 through a pipe The hopper line a (Figs. 1 and 2), the vessel being supplied, i. e., charged with the operating medium used by means of a pump 21. Valve casings 28, 29 are included in the pipe line a.

The machine plant illustrated is intended to be operated by means of a gaseous medium, preferably, compressed air. In Fig. 2, a sensing means in the form of a drop lever 30, which stops the scutcher l5 in a manner known per se when the twisted stricks are completed, is shown in raised position so that valve 3i in the interior of casing 23 is opened by means of an auxiliary linkage.

The pressure prevailing in the pressure vessel 26 is thus transmitted through pipe line a into cylinder 23 so that piston 2| is forced upwardly, thereby moving coupling portion I8 into engagement with coupling portion II by means of the bell crank lever I9, whereupon the feed cylinder I6 is turned and, consequently, the feed of material is initiated. When valve 33 is opened by the sensing means or feeler 25 through auxiliary linkage (Fig. 2), the action of compression spring I2 is overcome by the pressure acting on piston l6, and the belt shipper 8 shifts the driving belt 6 over to the fixed pulley 4. In consequence thereof, the bale opener I is operated to feed the succeeding preliminary opener.

When the drop lever 38 descends, the pressure line is closed by valve 3! (Fig. 2) so that the discharge valve 32, which is-arranged in the same casing 28, is opened by means of the respective auxiliary linkage. At the same time the coupling portions l1, [8 are disengaged by the tension spring 22 acting on the bell crank lever l9, whereas by the compression spring !2 acting on the piston I0, the driving belt is shifted over to the loose pulley 3 in accordance with the movement of piston ID.

If the supply of raw material present in the hopper feeder M is sufiicient for maintaining the operation of the plant, the feeler 25 rocks in the corresponding direction, that is, rearwardly,

so that valve 33 is closed and a discharge valve 34 arranged in the interior of the same casing 29 is opened by means of the respective auxiliary linkage. In consequence thereof, pressure medium is discharged from the pipe line section leading from the valve casing 29 to the cylinder ll, whereupon the spring-loaded piston I shifts the driving belt 6 over to the loose pulley 3, whereby the feed of raw material is interrupted.

If the pressure line between the opener aggregate is of considerable length, the feeler 25 may cooperate with an electric switch 35, 36, 31 for setting the same (Fig. When the feeler 25 swings backwardly, the switch control lever 3'! is rocked onto contact member 35 so that circuit 27 is closed. Magnet winding 39 is then energised by battery 38, so that discharge valve 40 of casing 42 includedin pressure line a is opened, this valve providing the armature of said winding. Atthe same time circuit 0 is interrupted at contact 38 by the said rocking movement of the switch control lever 31. In this way the magnet winding 4!, which up to this time was traversed by current, becomes devoid of current so that valve 43, which is also arranged inside of casing 42 and constitutes the armature of an electromagnetic winding 4l, is released, thereby closing the corresponding pipe line section a.

Due to the discharge of pressure medium from cylinder H, the piston H3 is displaced, in consequence of which, the driving belt 6 is shifted over to the loose pulley 3, thereby interrupting the feed of raw material.

This arrangement operates very expeditiously, for the reason that cylinder H requires but a short length of pressure line, which length is emptied in a correspondingly short time. In order to further reduce the time of starting the feed of material, a supplementary pressure vessel may be arranged in the vicinity of cylinder II.

If it is desired to use gaseous or liquid operating mediums for the telemotor system, which for some season or other cannot be discharged to the outside, return conduits are arranged between the exits for the operating medium and the pump 21'. Alternatively, pivotal control flaps for pipe conduits can be conveniently changed over from one position into another with the aid of simple expedients of a construction similar to that described, due to the fact that high pressures can be transmitted by means of the same, in a manner disclosed in Figs. 3 and 4, provided that the parts are appropriately dimensioned.

' The pressure dropnecessary for operating the device may be set up by a partial vacuum instead of by superatmospheric pressure.

Various changes and modifications may be made in the practice of my invention without departing from the principle or spirit thereof, by adding customary practice and established knowledge of the art to the present disclosure, and the scope of the appended claims is not to be regarded as limited except as specified therein.

I claim:

1. In a control device for textile cleaning machines for textile materials, two successive power driven cleaning machine aggregates, a disengageable drive for said preceding aggregate, a cylinder containing a piston for mechanically controlling said drive, disengageable coupling means provided in the succeeding aggregate, a feeler arranged in said succeeding aggregate, a cylinder containing a piston for mechanically controlling said coupling means, a connecting pipe line between said cylinders including valve casings having valves for controlling the flow and content of fluid in said line and adjoining spaces, two magnet windings for lifting the valves of one of said casings, a current generator, two leads each having a terminal contact member for connecting said windings with the same pole of said generator, a switch control lever actuated by said ieeler for alternate contact making with said members, a fluid conduit system cooperating with both said cylinders of said two aggregates through said pipe line for controlling said drive from said succeeding aggregate.

2. A control system for the control of successively operating units of machinery for opening and cleaning textile material comprising first and second power driven units for treating textile material, couplings for connecting and disconnecting each of said units from the driving power, means for sensing the quantity of textile material present at a certain location in the second unit, a source of pressure fluid, a fluid-operated motor for operating one of said couplings, conduit system connecting said source with said motor, valves connected in said conduit system, one for opening and closing communication between said source and said motor, and another 7 connected to said system or conduits between the first-mentioned valve and said motor for opening and closing the portion of said system between said first-mentioned valve and said motor to and from the atmosphere, and means controlled by said sensing means for opening and closing said valves alternately to supply and release pressure'fluid to and from said motor to connect and disconnect the coupling controlled thereby in dependence on the quantity of textile material present at said location as sensed by said sensing means,

3. A control system for the control of successively operating units of machinery for opening and cleaning textile material comprising first and second power driven units for treating textile material, couplings for connecting and disconnecting each of said units from the driving power, means for sensing the quantity of textile material present at a certain location in the second unit, a source of pressure fluid, a fluid-operated motor for operating the coupling of the first unit, a system of conduits connecting said source with said motor, valves in said conduit system, one for opening and closing communication between said source andsaid motor, and another connected to said system of conduits between the first-mentioned valve and said motor for opening and closingthe portion of the conduit system between said first-mentioned valve and said motor to and from the atmosphere, and means controlled by said sensing means for opening and closing said valves alternately to supply and release pressure fluid to and from said motor to connect and disconnect the coupling controlled thereby in dependence on the quantity of textile material present at said location as sensed by said sensing means.

l. A control system for the control of successively operating units of machinery for opening and cleaning textile material comprising first and second power driven units for treating textile material, couplings for connecting and disconnecting each of said units from the driving power, means for sensing the quantity of textile material present at a certain location in the second unit, a source of pressure fluid, a fluid-operated motor for operating the coupling of the first unit, a system of conduits connecting said source with said motor, a pair of valves in said conduit system, one for opening and closing communication between said source and said motor, and another connected to said system of conduits between said first-mentioned valve and said motor for opening and closing the portion of said conduit system between said first mentioned valve and said motor to and from the atmosphere, means controlled by said sensing means for opening and lease pressure fluid to and from said motor to connect and disconnect the coupling controlled thereby in dependence on the quantity of textile material present at said location as sensed by said sensing means, a further sensing means for sensing' the quantity of textile material present at a location forwardly in the direction of movement of said material from the first-mentioned location, a second fluid-operated motor, said second motor being connected to operate the coupling of the second unit, said system of conduits connecting the source of fluid with said second motor, and a second pair of valves connected in said conduit between said source and said second motor, one of said second set of valves controlling supply from said source to said second motor, and the other controlling discharge to the atmosphere from a point in said system beyond said one valve of said second set, and means for operating said second set of valves oppositely to close off supply of fluid to said system of conduits and to open said system to the atmosphere between said two sets of valves when the sensing means at said second location senses the presence of a predetermined quantity of material at said second location.

5. A control system for control of successively operating units of machinery for opening and cleaning textile material comprising first and second power driven units for treating textile material, couplings for connecting and disconnecting each of said units from the driving power, the coupling of the first unit comprising driving pulleys and idler pulleys, a driving belt, and a belt shipper, means for sensing the quantity of textile material present at a certain location in the second unit, a source of pressure fluid, a fluidoperated motor for operating said belt shipper, a system of conduits connecting said source with said motor, valves connected in said conduit system, one for opening'and closing communication between said source and said motor, and another connected to said system between said first-mentioned valve and said motor for opening and closing the portion of said conduit system between said one valve and said motor to andfrom the atmosphere, and means controlled by said sensing'means for opening and closing said valves alternately to supply and release pressure fluid to and from said motor to ship said belt to driving or idling position in dependence on the quantity of textile material present at said location as sensed by said sensing means.

JOSEF MEIER.

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