US2635826A - Lateral web control - Google Patents

Description

5 Sheets-Sheet l INVENTOR. ADOLPH KUZINSKI BY ATroRA/Ex A KU ZINSKI LATERAL WEB CONTROL April 21 1953 Flled Nov 7 1947 A. KUZINSKI LATERAL WEB CONTROL April 21, 1953 5 Sheets-Sheet 2 Filed Nov. 7, 1947 INVENTOR. ADOLPH KUZ/NSKI BY/ W)/ ATTORNEY I April 21, 1953 A. KUZINSKI 2,635,326

LATERAL WEB CONTROL Filed Nov. '7, 1947 5 Sheets-Sheet 3 .INVENTOR. ADOLPH KuzmsK! s g gw A TTORN EY April 21, 1953 A. KUZINSKI LATERAL WEB CONTROL 5 Sheets-Sheet 4 Filed Nov. 7, 1947 uvmvrozef ADOLPH KUZINSKI ATTORNEY April 21, 1953 A. KUZINSKI LATERAL WEB CONTROL 5 Sheets-Sheet 5 Filed Nov. 7, 1947 INVEVTOR.

ADOLPH ATTORNEY Patented Apr. 21, 1 953 UNITED STATES PATENT OFFICE 2,635,826 LATERAL WEB CONTROL Adolph Kuzinski, Passaic, N. J. Application November 7, 1947, Serial No. 784,627

2 Claims. 1 The present invention relates to machines for transferring a web of material from one core or tube onto another.

I In the continuous processing of sheet materials, such as the dyeing of fabrics or the printing of wall paper, it is customary to stitch or paste together successive lengths of material which are thereupon wound into a roll. For sales purposes, however, it is desirable to rewind each manufacturing length of material on an individual tube, this being conveniently done by means of a machine usually referred to as a tubing ma-.

supply roll, means for holding a take-up tube,

and a motorfor driving the latter tube whereby the material will be unwound from the supply roll and wound upon the tube. The workman operating the machine has one hand (or his foot) on the control switch while with the fingers of the other hand he feels the material in order to detect the seam at the juncture of two successive lengths. When the seam is reached, he stops the machine, cuts or rips the material at the seam, removes the loaded tube and puts a new tube in its place. Frequently the operator is also required to control manually, e. g. by means of a handwheel, the lateral position of the web in order to compensate for transverse deviations from a predetermined course.

The described position of the operator during the running periods of the machine is fatiguing, as is the continuous vigilance required, thus detracting from his efficiency in changing the tubes whereby the output of the machine tends to drop appreciably below its theoretical value. The speed-of his reactions, furthermore, will vary so that the seam will not always be arrested in the most suitable position, hence either requiring the completion of the winding process by hand or theunwinding of the excess material from the takeup tube.

It is, therefore, an object of the present invention to provide a machine, of the character described, in which the detection of the seam and the stopping of the machine are carried out by fully automatic means.

Another object of the invention is to provide a machine, of the character described, in which the lateral control of the web is carried out by fully automatic means. i

A further object of the invention is to provide, in a machine of the character described, automatic means for lateral web control which may be adjusted in simple manner for different tolerances.

Yet another object of the invention is to provide, in a machine of the character described,

A still further object of the invention is to pro-' vide, in a machine of the character described, a control circuit of simplified design using switching means responsive to alternating current.

Thus the invention, according to certain features thereof, contemplates the provision of a tubing machine having means for holding a supply roll, means for holding .a take-up tube, a motor driving said tube, detector means adapted to stop the motor when the seam is reached, automatic means controlling the lateral position of the web while the material is being transferred from the supply roll to the take-up tube, and switch means whereby the operator, having removed the loaded tube and put a new tube in its place, may re-start the machine whereupon the cycle is repeated automatically.

The above and other features and objects will become more clearly apparent from the following detailed description, taken in conjunction with the accompanying drawing in which:

Fig. 1 is a front view,

F 2 is a side view, and

Fig. 3 is a rear view of a machine according to the invention;

I Figs. 4 and 5 show the seam detecting device in inoperative position and operative position, respectively;

Fig. 6 is a circuit diagram representing themain control circuit;

Fig. 7 is a circuit diagram representing-an arrangement for the lateral web control;

Fig. 8 shows the brake and seam detector circuits and gives a more detailed illustration of 29 lodged in bearings which are formed by acrossbar 3|] and a vertical member 3| of the frame 20, collars 32' serving to prevent any axial displacement of the shaft. Sprockets 24, :25 are fixed to a shaft 33 extending longitudinally of Motor 22 drives, by way of sprock-v the frame 20, said shaft having fixed to its other end a sprocket 34 connected by a chain 35 to a sprocket 36. Sprocket 36 turns a shaft 31 which is formed with peripheral grooves 38 cooperating with the teeth of a manually rotatable ratchet 39. Shaft 31 is slidably held in a bearing 40 supported by a vertical member 4| of the frame 28. Fig. 1 shows how a take-up tube 42 is mounted between chucks 43, 44 provided on the positively driven shafts 29 and 31, respectively. To remove the tube 42, the ratchet 39 is rota-ted clockwise (as viewed in Fig. 1) by means of a crank 45, thereby displacing the shaft 31 outwardly. After insertion of a new take-up tube, the crank 45 is rotated counter-clockwise (as viewed in Fig. 1) until the chucks 43, 44 are in tight engagement with the ends of the tube, insuring the rotation thereof under the control of motor 22.

Fastened to the frame 20 by any convenient means (not shown) is a plate 46, preferably formed by an angle iron, which supports the electroniccontrol cabinet 41, the auxiliary motor 48 and the gear box 49. The cabinet 41 contains the circuit elements subsequently discussed in connection with Figs. 6 and 8. The box 49 houses reduction gearing (not shown) which couples the motor 48 to a gear 50 by way of a pinion 5I mounted on the box. A carriage or frame generally indicated at 52 comprises a platform 53 to whose underside is secured a verticalblade 54 supported on two spaced rollers 55, 56. One of the rollers, e. g. 55, is driven from the gear 50 over a transmission. system not shown. Thecarriage 52 further comprises depending members 51,, 58 joined together by a horizontal member 59, these members supporting spaced rollers68, 6I engaging a guide rod 62. Also supported on the carriage 52, as by brackets 63, 64 secured to the members 51 and 58 thereof, is a rod 65 adapted to carry the supply roll 66 (Fig. 2). The rod 65 carries a brake comprising a disc 61,. ounted on the rod, and a steel band. 68 cooperating therewith. The band 68 is fixedat one point, as at 69, to a bracket I0 secured to member 58 and is attached at another point, I I, to the armature of a solenoidIZ which is also secured to the, member. 58 by means of a plate I3...

Carried on the platform 53 of a carriage 52 are a measuring roller I4, two tension rollers I5, I6

able means, such as crossbars (only one shown), on the frame 20, next around the roller I5 and finally around the measuring roller I4 whereupon it is taken up by the tube 42. The measuring roller I4, having a knurled surface as shown in Figs. I and 3, is entrainedby the web I8 andactuates a counting device 8 I which meas ures the number of revolutions of roller I4 and, thereby, the length of the material passing through the machine. The device 8| may be of any known construction.

Mounted on a rod 82, which may be supported in similar manner asthe roller I9, is the scanning apparatus 83 comprising a source of light 84' and two photocells 85, 86. The apparatus 83 is located adjacent the right-hand edge of the web 18', as viewed in Fig. 1, and its angular position on the rod 82 is adjustable as by means of a set screw 81. A rotation of the'ap'paratus 83' about the rod 82 will result in varying the sensitivity of the apparatus with respect to lateral deviations of the 4 web as will subsequently become clear from a description of the circuit diagram of Fig. '7.

The micro-switch 11 represents the seam detector mentioned above and its mechanical features are shown in detail in Figs. 4 and 5. A rod 88 is supported on the platform 53 by means of brackets 89, 90 (Fig. 3). The rod 88 carries the body 9| which may be of any convenient form, e. g. may be drum-shaped as shown in the drawing. (It will be understood that both the angular and the axial position of the drum onthe rod 88 are fixed.) Rising from the body 9| are an arm 92 supporting a metal plate 93, an arm 94 having pivoted thereon the switch box 95, and an arm 96 carrying an adjustable screw 97. The

box carries externally a button 98 and a switch latter contacts are in a first position when the switch is at rest, as, in Fig. 4, or when the arm 99 rides lightly on the material I8 as determined.

by the adjustment. of screw9'I. If now, in the position illustrated in Fig. 5, a seam shouldpass betweenthe'roller I6 and the switch arm 99,. the. latter will be lifted slightly, thus being displaced with respect to the box 95 which is seated on the This relative movement of the arm' screw. 97$. 99 will throw the internal contacts of the switch into a second position as will be more fully described hereinafter with reference to the circuit diagram of Fig. 8.

The contents of the control cabinet 4! are illustrated diagrammatically in Fig. 6. The cabi-' net has nineteen terminals I-I9 to the first two of which power is supplied externally from alternating current mains, not shown. A master switch I00 connects the conductors IOI, I02 extending fromthese terminals to conductors I03, I04. forming a pair of auxiliary bus bars. Conductors I83, I04 are connected. to the terminals 3 and 4', respectively. In similar manner, conductors I05 through I I9. are connected to respective terminals 5 through I9. v I Connected in parallel between the bus bars I03 and I041 are the primaries of a main or plate transformer I20 and four auxiliary or heater ..transformers I2I, I22, I23, I24. The secondary of transformer I2! supplies heater current to the filaments of two thyratrons I25, I26 forming a first full-wave rectifier IZ'I. The secondary of transformer I22 supplies heater currentto the filament of a second full-wave rectifier I 28 shown as a double diode. The secondaries of transformers I23 and I24 in parallel supply heater current to the filaments of two thyratrons I29, I 39 representing a third full-wave rectifier I3I. The output of rectifier I2'I is controlled by-a potentiometer I32, serving to shift the phase of the grid voltage applied to the thyratrons. I 25, I26 from conductors I03, I04 by way of 'transformers I33, I34; the potentiometer I32 forms part of a reactive coupling circuit which includes a condenser I35 and connects the secondary of transformer I 33 to the primary of transformer I34. The output of rectifier I3I is controlled in analogous manner by a potentiometer I36 which is in series with a condenser I3I, connected between the windings of two transformers I38, I39 wgicnazerve to energize the grids of thyratrons The plates of thyratrons I25 and I29 and the left-hand plate of double diode I28 are connected to the left-hand terminal of the secondary of main transformer I20, with the remaining rectifier plates connected to the right-hand terminal thereof. A plate switch I40, when thrown, serves to extend the conductor I01 to the center tap of this secondary so as to make this conductor the common plate lead for all the rectifiers. As the conductor I06 is connected to the center tap of the secondary of transformer I22, this conductor represents the cathode return for rectifier I28 which therefore will be connected between terminals 6 and 1 as soon as both the main switch I and the plate switch I40 are closed. From a glance at Fig. 9, it will be seen that the two shunt windings I4I, I42 of motor 22 are connected in series between terminals 6 and 1 so that these two windings will be energized as soon as the said switches are thrown.

Referring briefly to Fig. 8 wherein the switch box 95 and adjoining parts have been shown in dotted lines, it will be seen that the metal plate 93 and the button 98 are connected to terminals I9 and I0, respectively, by way of conductors II9a and H811. Thus, these two terminals will be short-circuited when the box 95 is in its upturned position as in Fig. 4. The switch arm 99 controls an armature I43 in switch box 95, said armature I43 being connected to a conductor I I6a and thereby normally short-circuits the terminals I6 and I1 over a back contact connected to a conductor II1a; when the switch arm is actuated, however, this short circuit is broken and the armature I43 short-circuits, instead, the terminals I and I6 over a front contact connected to a conductor II5a.

A main relay I44, Fig. 6, has its winding connected to conductor I I1 over a back contact of an interrupter relay I45. Since, in the normal condition of the micro-switch 11 (box 95 turned down, arm 99 unactuated), terminals I1 and I6 are short-circuited as described above, the circuit of relay I44 will be extended over conductor I I 6 to bus bar I04. Bus bar I03 may be connected to the winding of relay I44 by the closure of a push button I46, by way of a circuit breaker I41 which may also be in the form of a push button. Relay I44 thereupon energizes and locks over a front contact associated with the middle one of its three armatures, indicated at I48. Armature I48 also extends the bus bar I03 to the movable arm of a three way switch I94.

A forward relay I50 and a reverse relay I 5I have their windings connected in parallel to the bus bar I04. Switch I49, as shown in Fig. 8, is arranged to complete either the energizing circuit for relay I50 over its right-hand contact I52 or the energizing circuit for relay I5I over its lefthand contact I53. (These connections have not been completed in Fig. 6 so as not unduly to complicate the drawing.) Operation of the forward relay I50, for example, energizes the armature A and the series windings I54, I55 of motor 22 (Fig. 9) over a circuit which can be traced from plate terminal 1 through winding I 54 to terminal 8, thence over conductor I08, armature I56 and front contact of relay I50, conductor I I0 to terminal I0, via armature A to terminal 9, over conductor I09, front contact and armature I51 of relay I50, front contact and armature I58 of relay I44 and conductor I I I to terminal I I and through Winding I55 to terminal I2. Conductor I I2 is connected to the center taps of the secondaries of transformers I23 and I24 in parallel, thus completing the circuit through rectifier I3I. If the reverse relay I5I had operated, the circuit would have run from terminal 8 over conductor I08 to the armature I59 and front contact of relay I5I, thence via conductor I09, terminal 9, armature A (with the current flowing in a direction opposite as before to terminal I0 and over conductor I I0, front contact and armature I60 of relay I5I, front contact and armature I58 of relay I44 and conductor III to terminal I I, the remaining connections being identical.

The position of the three-way switch I49 will thus determine the sense of rotation of motor 22 whereby the material may be wound upon the take-up tube 42 in either a clockwise or a counterclockwise direction as desired.

When "the relay I44 was energized, its armature I 6I extended over a front contact the conductor I05 to the cathode'return of rectifier I21 at the center tapof the secondary of transformer I2I. Thus there was prepared an energizing circuit for the auxiliary motor 48 as will be seen from Fig. '7.

Fig. '1 illustrates the operation of the marginal control 83. Connected between the conductors I 03a and Ma, which extend from terminals 3 and 4, are the primaries of three step-down transformers I62, I63 and I64. Transformer I62 energizes the lamp B4. Transformer I63 forms part of an energizing circuit for a relay I65, said circuit also including the photocell and a gas filled tetrode I66. Transformer I64, photocell 86 and gas filled tetrode I61 are included in a similar energizing circuit for a relay I68. Since the two energizing circuits are identical, only one of them will be discussed in detail. Transformers. I63 and I64 supply heater current to the tetrodes I66 and I61, respectively.

' The plate of tetrode I66 is connected to the terminal 4 over the winding of relay I65, a resistor I69 in series therewith and a conductor I041). The series combination of relay I65 and resistor I69 is shunted by a condenser I10. In an actual embodiment the magnitude of resistor I69 was 2500 ohms and the capacity of condenser I10 was 4microfarads, these values as well as others indicated on the drawing being given merely by way of illustration and not limitation. The load circuit of tetrode I66 is completed by a connec tion between the cathode thereof and the terminal 3 which includes a resistor HI and the conductor I03a. A very large resistor I12, designed as a voltage divider, is shunted across the oath-- ode-anode circuit of tube I66.

The cathode of tetrode I 66 is coupled through a condenser I12 to the control grid I13 of that tube and is galvanically connected to the second grid I 14 thereof. Grid I13 is directly connected to the anode of photocell 85 and is also connected, by way of anode resistor I15 shunted by condenser I16, to the slider of a potentiometer I11 bridged across the secondary of transformer I63. The cathode of photocell 05 is connected to the intermediate terminal of voltage divider I 12. Resistor I'll also serves to connect one terminal of the primary winding of transformer I63 to a corresponding terminal of the secondary winding thereof, the coupling between the two windings being arranged in such a way that the plate potential and the control grid potential of tube I66 will be substantially in phase.

As long as the photocell 85 is non-conductive, the voltage on the control grid of tube I66 will rise sufficiently during each positive half-cycle to ignite the tube, thereby causing the flow of a pulsating current which will charge the condenser I10 and, after an interval determined by the time constant of the elements I69, I10 will energize the relay I55. If, however, the photocell 85 is excited and becomes conductive, the voltage drop across the anode resistor I15 will lower the potential on grid I13 during positive half-cycles so that the tube I66, having, been de-energized during a negative half-cycle will not reoperate whereupon relay I'65 releases.

The normal position of the web I8, with respect to the light source 84 and the photocells, 85 and 3B is as indicated in Fig. 7: by a dot-dash line with the arrowheads indicating the possible displacement of the web. Thus, under normal conditions, the light will impinge on the photocell 86 but will be cut off from the cell 85. This means that relay I65 will be operated while relay I68 will be at rest and none of the windings I18, I'I9 of motor 46 will be energized. Suppose, now, that the web I8 shifts in such a manner (upward in Fig. 7 that light may fall on the cell 85. Relay I65 will release and a circuit will be closed from terminal 5 over conductor I05a, armature and back contact of relay I65, winding I18 and armature A of motor 48, conductor IBM to terminal I. This energizes motor 48 in one sense of rotation whereby the position of the web will be restored. If, however, the web' deviates in the opposite direction (downward inv Fig. 7), the photocell 35 will become non-conductive and relay I68 will operate, closing an obvious circuit through armature A and winding I19 of motor 48' which thereupon rotates in the reverse sense, likewise restoring the web I8 to its normal position.

From an inspection of Fig. 7 it willalso be clear how a rotation of the scanning device 83 about the rod 82 (Fig. 2) varies the limits within which the web 18 may be laterally displaced without effecting the operation of motor 48. Thus it will be'seen that clockwise rotation of the apparatus 83 as viewed in Fig. 2 will have the effect of increasing the distance between the web 13 and the source of light 84 while bringing the web closer to the photocells 85, 86. In this position the tolerance will be greater since a wider linear displacement of the edge of the material within the limits of the triangle 84, 85, 86 will be possible. Conversely, a counter-clockwise rotation of the apparatus 83 about the rod 82, as viewed in Fig. 2, will decrease the tolerance by placing the web 18 closer tothe lamp 84. In this simple manner the desired degree of margin control may be conveniently selected.

Connected across the bus bars I03, I04 (Figs. 6-and 8) is a step-down transformer I80 which supplies low-voltage alternating current to conductors IIB and H9; The transformer also provides heater current for an amplifier I8I, shown as a tetrode in Fig. 8. The relay I45, previously referred to, is a low voltage relay in series with conductor I I 8 which becomes energized when the contacts 93, 98 are closed. Relay I45 opens the operating circuit of the main relay I44 which therefore cannot be energized when the switch box 95 is in its. upturned position as shown in Fig. I. At the same time a circuit through an alarm lamp I32 will be closed: Conductor I03, lamp I82, front contact and armature of relay I45, conductor II'I, terminal I'I', conductor IIIa, back contact and armature I43 of switch 11, conductor IIBa, terminal 65, conductor H6, conduc tor I04. This will advise the operator that the machine is not in condition to function and will cause him to lower the switch box 95, whereupon the relay I45 will become tie-energized, relay I44 8 will operate and'la'mp' I82 will be extinguished.

At this. point it may be well to note that the micro-switch II is preferably of a type in which the armature I43 is tripped by the arm 99 so as to remain in actuated position until manually rcstored to normal. In this case, since the energizing circuit for the main relay I44 leads over the back contact and armature of the switch, it will not be possible to start the machine with the'armature I43 oir normal and the alarm lamp I82 will be lit over a circuit which includes conductors H5 and 5a, front contact and armature I43 of switch TI, conductor II'oa'and conductor H6.

The load circuit of amplifier tube I8! extends from the cathode thereof over a back contact and" armature I48 of relay I44 to the bus bar I94 and from bus bar I53 by way of a relay I83 to the plate of the tube. Relay I83 is in series with a resistor I84 and is shunted by a con denser I85, the arrangement representing a time delay circuit similar to the circuit #652, I'EU, of Fig. '7. Two very large resistors I86 and I87, the latter designed as a potentiometer, are connected across the bus bars I 03 and I84, the control grid I88 of tube I8! being connected to the slider of potentiometer I3? by way of a condenser I89 and grid leak I535. The second grid I9i of tube I 8| is connected to the plate thereof. A large resistor I 92 is bridged across the tube as i-=. customary.

It will be seen that tube I8I will be energized assoon as the master switch Itfl has been closed and as long as the relay I44 remains unoperated. It. Will also be seen that an energizing circuit for the solenoid I2 of the brake described in connection with Fig. 2, shown here schematically as an impedance, leads from conductor I04 over conductor II4, terminal I4, conductor II4a, solenoid' I2, conductor IiBa, terminal 53, conductor II3, back contact and armature I93 of relay I5I, back contact and armature I54 of relay I59, back contact and armature of relay I83 to the conductor I93. Thus, when the switch It!) is initially thrown, the solenoid '22 will be energized over the circuit described; at the same time, however, the vacuum tube I3I will conduct pulsating direct current,'charging the condenser I and eventually operating the relay I83 which opens itsback contact de-energizing the solenoid i2 and releasing the brake. The period during which the brake is applied will be determined by the time constant of the circuit elements I84, I85.

The operation of the arrangement described is as follows: Let us assume that the machine has been running for a while, thus the condenser I85 is completely discharged. The main relay I44 is energized as is one of the start relays I55, I5I. Accordingly, although the circuit of solenoid I2 is closed at the armature of relay I83, it will be open either at the armature E93 or at the armature I94. Suppose, now, that the relay I44 is momentarily de-energized; this may happen as a result of an actuation of the switch arm 99 or upon manual depression of the release button I41 by the operator whereby the holding circuit of the relay will'b'e opened. Relay I56 or I5I (whichever had been energized) is relcased at armature I48, thereby closing the operating circuit for the solenoid I2 so that the brake is applied to the shaft 65 carrying supply roll 65. At the same time the release of the start relay de-energized motor 22 while the circuit of motor 48 is open at the armature I6I. The tube I8! becomes conductive, energizing in due time the relay I83 whereupon the brake is released and the machine is ready to be started up anew.

It will thus be seen that by the present invention I have produced a machine which is fully automatic to the extent that the operator need attend only to the changing of the take-up tubes and supply rolls and to the starting of the machine. The invention, however, is not limited to the particular embodiment described and illustrated; thus the arrangement need not be used for the detection of seams but may be utilized to detect other variations in the thickness of a web of material, in such a manner that the machine will be arrested automatically when either abnormally thick or (with obvious modifications of the switch 71) abnormally thin portions of material are encountered. Various other adaptions and modifications may be made by persons skilled in the art without exceeding the spirit and scope of the invention as defined in the objects and in the appended claims.

I claim:

1. In a tubing machine of the character described the combination of a frame; a motor driven tubing spindle adjustably mounted in said frame; a plurality of rollers rotatably mounted upon said frame; a second frame mounted upon said rollers supported by said first frame; a second motor drive mounted upon said first frame and coupled to one of said rollers carrying said second frame, whereby said second frame may be driven back and forth parallel to the axis of said tubing spindle; a supply roll rotatably mounted upon said second frame; a web of material to be tubed stretched from said supply roll to said tubing spindle; a plurality of guide rolls rotatably mounted in contact with said web between said supply roll and said tubing spindle; a pair of photo-electric cells mounted on said first frame near an edge of said web; a light source mounted on the other side of said web, in line with the edge of same, said light source being placed in such a position relative to said web that only one of said photo-electric cells is illuminated when the web is in its normal position, and electric control apparatus operated by said photo-electric cells whereby said second motor drive is actuated and whereby said supply roll and said web may be kept in proper relation to said tubing spindle.

2. A tubing machine as described in claim 1 where said pair of photo-electric cells and said. light source are adjustably mounted upon a.

transverse member in said first frame whereby said photo-electric cells and said light source may be set to control the tubing of webs of various widths.

ADOLPH KUZINSKI.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,012,379 Longden Dec. 19, 1911 1,412,994 Beadle Apr. 18, 1922 1,549,907 Clokey Aug. 1 8, 1925 2,078,669 King Apr. 27, 1937 2,129,847 Knodel Sept. 13, 1938 2,203,181 Potdevin et a1 June 4, 1940- 2,215,625 Thourot Sept. 24, 1940 2,332,104 Meyer Oct. 19, 1943

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