US2674074A

US2674074A - Roll heading machine

Info

Publication number: US2674074A
Application number: US246548A
Authority: US
Inventors: Lancaster Arthur Wesley; Patmore De Forest Charles
Original assignee: LONG Ltd E; Williams & Wilson Ltd
Current assignee: E LONG Ltd; LONG Ltd E; Williams & Wilson Ltd
Priority date: 1951-09-14
Filing date: 1951-09-14
Publication date: 1954-04-06
Anticipated expiration: 1971-04-06

Description

April 6, 1954' A. w. LANCASTER mm. 2,674,074

ROLL HEADING MACHINE Filed Sept. 14, 1951 4 sh t s t 1 A"? CIRCUIT PIPES AND VALVES Jaw/22%;! 4 (1/. Zdrzcmszer 'D, C. fatmore April 6, 1954 A. w. LANCASTER ETAL 2,674,074

ROLL HEADING MACHINE Filed Sept. 14 1951 4 Sheets-Sheet 2 I 1 ave/22 0215 AMI/[422605 er p f 1954 A. w. LANCASTER EIAL 2,674,074

ROLL HEADING MACHINE Filed Sept. 14, 1951 4 Sheets-Sheet 3 Q is April 6, 1954 A. w. LANCASTER ETAL 2,674,074

Y ROLL HEADING MACHINE Filed Sept. 14, 1951 4 Sheets-Sheet 4 51 fire/222m I74. Z 01260.22? 1115.13 361%,

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Patented Apr. 6, 1954 Arthur Wesley Lancaster and De Forest Charles Pat'more, rillia, Ontario, Canada, assignors, by direct and mesne assignments, of fifty per cent to Williams & Wilson Limited, Montreal.

Quebec, and fifty per cent to E. Long Limited, Orillia, Ontario, Canada Application September 14, 1951, Serial No. 246,548

This invention relates to roll heading machines employed for gluing protecting and sealing heads, consisting of adhesively coated paper disks, to the wrapper covered ends of wrapped shipping rolls of newsprint or other paper to protect the ends of the rolls during shipment.

One object of the invention is the provision of a roll heading machine which is designed and operated to ensure application of the protecting headsto the ends of the roll in a uniform manner and in a minimum amount of time.

Another object is the provision of a roll heading machine designedand operated so that the advancement and retraction of the roll heading units and the ejection of the headed roll from themachine'is accomplished with a minimum of manual labor.

Other objects, advantages and characteristic features of the invention will be apparent from the following detailed descriptionof the accompanying drawings, in which Fig. 1 is a plan view of my improved roll heading machine.

Fig. 2 is a view, mainly in side elevation, of said machine. In this view parts of the base of the machine are broken away to show elements that would otherwise be concealed.

Fig. 3 is a vertical sectional view taken substantially along the section line 3-3 of Fig. 2.

Fig. 4 is a vertical sectional view taken substantially along the section line 4-4 of Fig. 2.

Fig; 5 is an elevational view of the right hand endv of the machine shown in Figs. 1 and 2.

Fig. 6 is a sectional view taken substantially along the section line 66 of Fig. 2.

Fig. 7 is a fragmentary sectional view taken substantially along the section line 1-1 of Fig. 5.

Fig. 8 is a wiring diagram illustrating the electrical connections and control devices provided for operating electrically actuated valves through which pressure medium is routed to and from cylinder and piston devices which control the operation of the heading units and the roll ejecting. means of the machine illustrated in the preceding figures.

Figs. 9 to 13 inclusive are wiring diagrams il+ lustrating the sequential closing of the various circuits embodied in the complete wiring diagram shown in Fig. 8.

As shown in Figs. 1 to 7 inclusive, our improved heading machine comprises a hollow base member 5 supporting the

roll heading units

6 and 1 and other parts of the machine hereinafter re Ierred to- Each of the roll heading units 6 and '1 com- 7 Claims. (01. 53-64) prises a hollow platen 8 carried'by' a travelling bracket 9 extending downwardly through a slot ID in the top of frame 5. These platens are mounted so as to be self-aligning with the roll being headed. The lower end of each bracket 5 is slidably supported by a pair of guide plates ll (Figs. 2 and 4) having their inner portions fitted in the bracket slots l2 and their outer portions secured to underlying supporting angles 13 welded or otherwise secured to the side members 14 of frame 5.

The travelling bracket 9 of heading unit 6 is:

attached to the piston rod 15 of a piston I6 working in a cylinder ll. The travelling bracket 9 of heading unit I is similarly attached to the piston rod I8 of a piston I9 working in a cylinder 20.

The cylinders I1 and are arranged in opposite,

units

6 and 1 with the side edges of the platform" projecting beyond the sides of the frame. One

-. side of platform 23 and the adjacent side M of frame 5 are provided with interfitting pivotforming elements 24 and 25 affording a horizontal axis about which the platform may. be

tilted from its normal horizontal roll-supporting position shown by full lines in Fig. 6 to an inclined roll-ejecting position indicated by dotted lines in said figure. Platform 23 is connected to the piston rod 28 of a platform operating piston 29 working in a cylinder 30 arranged frame 5 directly below the platform. As shown to advantage in Fig. 6 platform 23 is shaped toprovide an upper concave roll-supporting surface 3| on which the wrapped roll to be headed issupported and centered during the roll heading operation.

As indicated by the full and dotted line showing of elements 24 and 25 in Fig. 6, the ejecting platform 23 may be'said to move the roll either through the header or in the reverse direction.

Each platen is provided with a plurality of vacu-i um nozzles 32 connected, through pipes 33 and shut-off cocks 34, to a suitable vacuum line 35.

The wrapped roll of paper to be headed is placed on the roll-receiving platform 23 with the wrapper covered ends of the roll facing the.

roll heading platens 8. The protecting'and sealing heads to be applied to the wrapped ends of the roll consist of paper disks 3'! (Fig. 2) having one side 38 coated with adhesive. The nonadheslve sides of these paper disks 31 are placed against the opposing working faces of the heading platens 8 and are held there-by vacuum applied through the vacuum nozzles 32. The platens carrying the paper disks 3! are then advanced against the wrapped ends of the rolls to apply the paper disks thereto. This is accomplished, as diagrammatically illustratedin Fig. 8, by supplying air under pressure to the, outer ends of cylinders H and 20 through solenoidcontrolled valves 4| and 42 and simultaneously exhausting air from the inner ends of said cylinders through solenoid-controlled valves 43; and

44. After the adhesively coated sides of the paper disks have been applied to the wrapped ends of the rolls and the required heading pressure has been built up in cylinders H and 20, the, valves 4|, 42, 43' and 44 are permitted to resume their normally. closed position and the pressure in the cylinders continues to hold the platens against the wrapped rolls for a suificient time. to ensure proper adhesion of the paper disksv 3.1 to. the portions of the. wrapping covering the ends of the roll. After the platens 8 have been held under pressure against the. wrapped ends of the roll for a suffiicient period of time, air under pressure is'supplied to the irmer ends of cylin ders H and 28 through solenoid-controlled valves platens 8, fromthe wrapped. ends of the roll air is supplied to the lower, endof the tiltingplatform operating cylinder so through a 4-way solehold-controlled valve 5| so that the piston 29. is raised to tilt the platform 23 to the roll eject-v ing position shown by dotted lines. in, Fig. 6, After ejection of the roll from the machine; valve. 5| is operated to a position in which airis suppliedv to the upper end, of cylinder 38. and is, simul-v taneously exhausted from the lower endof. the. cylinder to move the. piston 29 downwardly and thereby restore the. platform; '23 to its. normal horizontal roll supporting position.

The valves 4| to 48 inclusive, controlling oper-.

ation of the heading units 6 and I and the valve 5| controlling operation of the platform tilting. piston are operated in. proper sequence by the. automatic opening. and. closing of suitable. switches 53 and 54 through which the operating solenoids of the valves. are connected across a source of electrical energy. represented by the supply lines 55 and 5.5 in Fig. 3.. The opening and closing of switches 53. and. 54, is controlled by a timer 51 operatedby a timer motor 58 The timer 5! may be of any suitable design. In the present instance and for. illustrative purposes only the, timer is represented as, comprising a. cam shaft5la equipped with cams 59. controlling the opening and closing of a. plurality of sets of timer contacts indicated, respectively, at 59, 6|, B2 and 63. A drive connection between the timer shaft 510: and the timer driving motor 58 is established and disrupted by the engagement and 1 wrapped ends of the, roll.

disengagement of an electrically actuated clutch which is diagrammatically represented by the clutch actuating coil 54. The timer 51, the driving motor 58, and the clutch operating coil 64 are put into operation, to start the roll heading operation, by momentary closure-0t a, manually operable push button switch 55. The closure of this push button switch establishes circuit connections (Fig. 9) whereby the motor 58 andthe clutch coil 64 are connected across the

supply lines

55 and 55 to initiate operation of the timer. The initial operation of the timer 51 results, in closure of the timer contact 50 to establish suitable circuit connections (Fig. 10) whereby. the closed circuit condition of the motor 58 andthe; clutch coil 64 is maintained after the push button switch 65 is released and permitted to re-open. The timer contacts 69 remain closed until. the roll heading and ejecting operations have been completed and the roll heading units and the roll. ejecting piston. have been returned to their normal starting positions. The timer. contacts 60 are then re-opened to deenergize. the motor 58 and the clutch operating coil 55.

The closure of timer contact 60 is followedby closure of the timer contactsfil. The. closure. of, these last mentioned timer contacts establishes circuit connections (Fig. 11) whereby the oper--' ating coil 61 of the normally open valve con: trolling switch 53 is connected across the su p. ply

lines

55 and 55.. The. resulting closure. of. switch 53 connects the operating, solenoidsof the valves 4|, 42, 13 and 44 across the. supply. lines 55 and 5t. so thatthesevalves are opened. automatically to supply air to. the outer ends. oij cylinders IT and Hand to simultaneously. haust air from the inner ends of said cylinderst'o thereby cause the platens 8 to be advanced to their roll heading positions. After. a, pre d'et,er.-,

= mined time the contacts 6| of timer 5.1 are. re-,

opened to deenergize the operating coil 6] of. switch 53. and. the resultingre-opening ofswitch 53 permits the valves 4|, d2, 33 and it to. close leaving the platens B, pressed against the After the. platens 8 have been held against the. ends, of the roll, for

a suitable period, the timer contacts 62 arev closed,

to establish. circuit connections. (Fig.- 12) where.- by the operatingcoil. 88. of the. previously. men tioned normally open valve controlling. Switch 54 is connected across supply lines. 55 and 5s. The

resulting closure. of. switch 5.4. connects theoper ating solenoid of valves 15.45, 4.1 and 2.8. across. supply lines. 55 and 55.. so. .thatthese valves are opened to supply. air-to the inner. ends of. the.

cylinders. ||v and 2.0. and to, simultaneously ex;- haust air fromv the. outer endsjof said cylinders, This results, in the pistonslfi and i9. and the heading units, 6 and being. 'mo ved. outwardly and returned to. their starting positions, After the heading units 5 and. l have been moved oi 1 t-. wardly a short distance. by. thepistons I6. and;

H! to retract the v platens 8. from thelends of the roll, the timer. contacts. fizarepermitted to re open thus deenergizing the operating coil llfijof] operated to a position in which air is supplied to .the lower end of the platform tilting cylinder 3D and is simultaneously exhausted from the upper end of said cylinder. The resulting upward movement of the platform tilting piston 29 tilts the platform 23 to the dotted line position shown in Fig. 6 and thus ejects the headed roll from the machine. Immediately after the roll ejecting operation the timer contacts 63 are reopened and valve 5| returns to a position in which air is supplied to the upper end of cylinder 3!] and is exhausted from the lower end of said cylinder to return the piston '29 and the roll ejecting platform 23 to their starting position. As this cycle of operation is completed the timer contacts 90 are re-opened so that the motor '58 and the clutch coil 64 are de-energized and remain so until another cycle of. operation is initiatedby re-closure of the manually operable bush button switch 65.

Provision is made for adjusting the operation of the machine to suit the length of the rolls to be headed. This is accomplished by providing two additional manually operable push button switches 9| and 92 electrically connected as shown in Figs. 8, 11 and 12. By the operation of these switches 9i and 92 it is possible to vary the extent of travel of the heading

units

6 and 1 during both their working and return strokes. The closure of switch 9| energizes the operating coil 61 of switch 53 and closes the latter to connect the solenoid operated valves 4| to 44 inclusive across the

supply lines

55 and 56 to effect a working stroke of the heading units 6 and I. In this case the platens 8 will continue to approach each other as long as push button switch 9| is held in its circuit closing position. The extent to which the platens 8 of the heading units 6 and l are separated from each other by the return strokes of the heading units may be selectively controlled by closing the push button switch 92 and holding said switch closed until the platens have been separated a suitable distance with reference to the length of the roll to be headed. In this connection it will be noted that the closure of push button switch 92 connects the operating coil 88 of switch 54 across

supply lines

55 and 56 so that switch 54 is thus closed to connect the valves 45 to 48 inclusive, across said supply lines to thereby operate the heading units 6 and l on their return stroke.

It may be noted here that the vacuum at the vacuum nozzles 32 of platens 8 is not sufilciently strong to pull the applied paper disks or heads 31 away from the wrapped ends of the roll during the return stroke of the platens. In this connection it will also be clear from the preceding description that the return stroke of the platens is not initiated until after a dwell period during which the adhesive bonding the disk 31 to the wrapped ends of the roll has set sufficiently to hold the disk to the rolls as the vacuum sides of the platens 8 are moved away from the contacting non-adhesive sides of the paper disks 31.

The invention also contemplates the provision of an emergency stop switch indicated at 94 in Fig. 8. If the machine is started accidentally or something goes wrong during the operating cycle the opening of switch 94 stops the machine and results in the component parts being returned to their starting positions.

Having thus described a preferred embodiment of our invention it will be understood that various modifications may be restorted to within the scope and spirit of the invention as defined by the appended claims.

The embodimentsof the invention in which an exclusive property or privilege is claimed are defined as follows:

1. In a roll headingmachine of the character described, a pair of roll heading units movable toward and'away from each other, cylinder and piston devices connected to said units for moving the latter through their working and return strokes during aroll heading operation, automatic electrically actuated valves through which pressure medium is routed to and from said cylinder and piston devices to effect the aforesaid working and return strokes of said heading units, a source of electrical energy, a motor driven circuit-controlling timer operable 'to establish and. disrupt circuit connections whereby said valves are periodically connected to and disconnected from said source of electrical energy in predetermined sequence, and a normally open manually operable switch through which control contacts of the timer and the motor terminals are connected across said source of electrical energy in the closed circuit position of said manually operable switch.

-2. A roll heading machine as set forth in claim 1, including normally open timer contacts which are automatically closed at the commencement. of operation of the timer to establish circuit connections whereby the closed circuit condition of the timer and the timer operating motor is maintained after re-opening of the manually operable switch.

3. A roll heading machine as set forth in claim 1, in which the timer is automatically clutched to the motor through the agency of an electrically actuated clutch including an operating coil which is connected across the source of energy through the circuit connections established by closure of said manually operable switch and which coil is maintained in its closed circuit condition subsequent to the opening of said manually operable switch by the circuit connections established by closure of said timer contacts.

4. A roll heading machine as set forth in claim 1, including additional normally open manually operable switches and circuit connections through which said electrically actuated valves are connectable across the source of electrical energy independently of the timer and the first mentioned manually operable switch.

5. In a roll heading machine of the character described, a pair of roll heading units movable toward and away from each other, cylinder and piston devices connected to said units, automatically controlled electrically actuated valves through which pressure medium is routed to and from said cylinder and piston devices to effect the working and return strokes of said heading units, a source of electrical energy, a motor driven electric timing mechanism including a plurality of sets of normally open contacts con nected across said source, said sets of timer contacts being closed in predetermined sequence during a complete cycle of operation of the timer, normally open valve controlling switches through the agency of which groups of the electrically actuated valves are periodically connected and disconnected with said source of electrical energy in predetermined sequence, each of said valve operating switches including an operating coil connected across said source in series with one of the several sets of timer contacts, a normally open manually operable switch through which the timer operating motor is initially connected across the said source to commence operation 01' the timer and; means including one. of: the: sets of timer contacts for maintaining the closed circuit condition of said motor after re-opening: ot; saidv manually operable switch.

6. A roll heading machine as set forth in claim,

5,- including additional normally open manually operable switches and circuit connections through which said electrically actuated valves are connected across said source. of electrical energy independently of said timer and said first men-- tioned manually operable. switch.

'7. Ina roll heading machine of the character described, a stationary base frame, a pair of relatively movable roll heading units slidably supported by said frame, cylinder and piston devices connected to said units, a roll supporting and ejecting platform normally arranged in a horizontal position on a portion of the frame lying between said roll heading units, means pivotally connecting said platform to said frame to provide a horizontal pivotal axis about which the platform is swingable from its normal horizontal roll supporting position to an inclined roll ejecting position, a cylinder and piston device connected to said platform for swinging it about said horizontal axis, automatically controlled electrically actuated valves through which pressure medium is routed to and from said cylinder and piston: devicesto: efiectthe working andre-- tum strokes of said heading units and to effecttheroll ejecting operation: of said platform upon the completion of the roll heading operation and during thereturnstrokes of said heading units, a source of electrical energy, a motor driven circunt-controlling timer operable to establish and disrupt circuit. connections whereby said valves are periodically connected to and disconnected from said source of electrical energy in predetermined'sequence'and a normally open manually operable switch through which control contacts.

of the timerand the motor terminals, are connected across-said source or energy in the closed circuit position of said manually operable switch.

References Gited in: the. file of. this, patent UNITED STATES PA'I'ENTS Number Name Date 1,026,049 Power May 14, 1912 1,580,361 Anson Apr. 3., 1926. 1,840,222 Brown Jan. 5, 1932 2,198,644 Wettengel Apr. 30, 1940, 2,288,621 Greer July 7, 1942 2,311,969 Schenck,Jr. et al. Feb. 23, 1943' 23,448,478. White Aug, 31, 1948