US2823029A - Strip feeding arrangement - Google Patents

Strip feeding arrangement Download PDF

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Publication number
US2823029A
US2823029A US536706A US53670655A US2823029A US 2823029 A US2823029 A US 2823029A US 536706 A US536706 A US 536706A US 53670655 A US53670655 A US 53670655A US 2823029 A US2823029 A US 2823029A
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United States
Prior art keywords
machine
foil
feed
strip
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US536706A
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English (en)
Inventor
Ford Geoffrey Ewart
Waite Philip Sidney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fords (Finsbury) Ltd
Fords Ltd
Original Assignee
Fords Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of US2823029A publication Critical patent/US2823029A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/446—Feeding or removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/021—Control or correction devices in association with moving strips

Definitions

  • the printing is applied as a repeating pattern along a metal foil which is fed through the machine for making the caps, the machine cutting the foil or blanking and forming the foil to form the caps. It is necessary that the printing should accurately register with the final cap and, since the foil is liable to stretch and slippage may possibly occur during feeding,means must be provided for automatically controlling the feed to eliminate the errors which would otherwise result in the cap being formed with the printing out of register. Similar problems arise in feeding printed strips of paper or other material bearing printed or other markings which must be kept in register with a machine operation.
  • One object of the present invention is to provide a mechanism for adjusting the strip feed to maintain the required register.
  • the connecting rod slide member is moved to advance or retard the feed during a stroke in dependence upon the response of the detecting device to synchronising marks, perforations or the like on the strip as it is advanced through the machine.
  • a detecting device for this purpose comprising aphotocell adapted to respond to the spaced marks or perforations as it is advanced through the machine so that during each feed stroke a signal impulse will beproduced, the timing of which is compared with means such as a commutator device operating in timed relation with the machine.
  • the signal impulse occurs in any stroke in advance of the correct timing, it operates mechanism to move the connecting rod slide member closer to the oscillating pivot to retard the feed during that stroke, whereas if the signal impulse occurs late in the time cycle the mechanism is operated to move the connecting rod slide member away from the pivot to increase the feed during that stroke.
  • the timing of the signal impulse thus controls the feed during the actual stroke in which it occurs.
  • These additional means may be arranged to be operable whilst the machine is running.
  • manually-operable means are additionally provided to enable the strip-feed to be adjusted independently of the automatic adjustment.
  • additional means may be arranged to be operable whilst the machine is running.
  • the manually operable means are provided with indicating and gauging means to allow a predetermined manual adjustment to be effected.
  • Fig. 1 shows a side exterior view of a cap-forming machine embodying a feed mechanism according to the invention.
  • Fig. 2 shows a side view of the machine of Fig. l with the exterior cover members removed, and to a larger scale.
  • Fig. 3 shows a portion of pro-printed strip of the kind fed by the feed mechanism of the invention.
  • Fig. 4 shows a feed-length gauging device
  • Fig. 5 shows a schematic circuit diagram of the electrical control means.
  • the cap blanking and forming machine 1 may generally be of the type described in the specification of copending application Serial No. 445,639 filed July 26, 1954, in the name of Geoffrey Ewart Ford, and is designed to blank and form bottle caps from a strip of aluminum foil 2, which may be paper-backed, which is intermittently fed through the machine.
  • the foil 2 is provided with printed areas 3 ( Figure 3) at spaced intervals along its length where the foil is to be blanked and formed. Also printed at regularly spaced intervals along the side edges of the foil are synchronising marks 4.
  • photo-cell unit 50 When fed past a photo-cell unit 50, produce signal impulses which are used to control the feed of the strip and to maintain register between the printed areas 3 thereon and the blanking tool of the machine when the foil is stationary between successive strokes.
  • the photo-cell unit per se forms no part of the present invention, and may take any desired form, there is no need more fully to describe it here. However, generally speaking, it will comprise a photo-cell 48 (Fig. 5) in a casing positioned so as to receive light reflected to it from the foil surface, the light being emitted by an electric lamp 49 located in the casing and passing through a slit in the casing onto the foil. The photo-cell is shielded from the direct light of the lamp.
  • the foil is fed through the machine by the knurled rollers 5 which are driven by the gear wheel 6.
  • the gear wheel 6 is driven through a freewheel or uni-directional drive of any convenient kind, for
  • the disc 7 is reciprocated, to produce the intermittent drive of the rollers 5, by a connecting rod 8, the opposite end of which is connected to a slide member 9 attached to an oscillating lever arm 18 which is pivoted to the machine frame at 11, the arm being oscillated by the-connecting rod 12 which is driven by the crank pin 13 on the disc 14.
  • the disc 14 is driven by the machine in-timedrelationwith the blanking. tool so that the strip 2 will be advanced during part of the machine cycle and will remain stationary during the actual blanking operation
  • the stroke of the crank pin may be adjustable for initial, adjustment of the required foil feed.
  • the slide member 9 is movable towards and away from the pivot 11 on a rod 15 carried bythe lever arm 10, and is movedby a link 16 pivotally connected at one end to the-slidemember 9 and at its other end to a control lever 17 pivoted either directly to the machine frame at 18 or to a subsidiary member as will hereinafter be explained.
  • the control lever 17 When the control lever 17 is in its neutral position, the slide member 9 will be at the centre of the rod 15 and the pivot between the link 16 and the control lever 17 will be in alignment with the pivot 11.
  • the left-hand end of the control lever 17 upwardly (referring to the drawing), the.
  • control lever 9 will be moved further away from the pivot 11 and thus the stroke of the connecting rod 8, and the feed of the rollers 5, will be increased, whereas by lowering the left-hand end of the control lever. 17, the stroke willbe reduced.
  • the movementof the control lever may conveniently produce an increase, or decrease of the strip feed of 1 of an inch during one stroke.
  • control lever 17 The left-hand end of the control lever 17 is normally retained in its neutral position by a roller 19 thereon engaging in a V-notch 20 on an arm 21 pivoted to the machine frame at, 22. andurged towards the rod by a spring 23.
  • Raising or lowering of the control lever 17 is effected by a double-armed cam 24 .which is driven by a chain 25 from the shaft of the disc 14at half the speed of the disc 14.
  • Thecam lobes are adapted to engage with the ends of fingers 26, 27 pivoted respectively to the control lever 17 at 28 and 29 and normally urgedby light springs or gravity to the positions shown in the figure.
  • the control lever 17, also carries two relays30, 31 of which the armatures .32, .33 respectively are adapted, when the relays are energised, to engage beneath the outer ends of the fingers 26, 27 and prevent turning thereof about their pivots 28, 2%.
  • the armatures are clear of the ends of the fingers so that as the cam 24 rotates the lobes thereon can move the fingers 26, 27 without actuating the control arm 17.
  • the armature 32 is attractedto lock the finger 26 so that the cam lobe will then cause the control lever 17 to be, raised as the lobe moves past the finger 26.
  • the relay 31 is energised, the cam 24 will cause the control lever 17 to be depressed. Movement of the control lever causes the roller 19 to move away from the bottom of the V-notch 20 and thus tension the spring 23; the control lever 17 will be restored by the spring 23 and notch 28. to its neutral position as soon as the cam lobe disengages from the finger 26 or 27 as the case may be.
  • a cam 34 which is arranged to move a central contact 35 from engagement with one spring contact 36, against which it normally rests, into engagement with another spring contact 37 on the opposite side thereof;
  • the contacts 36, 37 are connected respectively to the control electrodes 3?, 40 of two thyratrons 41, 42 in an electronic control equipment and the central contact 35 is connected to the output electrode 42 of the photo-cell 48.
  • the cam 34 duringits cycle, subsequently actuates a further switch contact 38 which opens the anode current supply to the thyratrons 41, 42 at each cycle, so that, at the appropriate instant in each cycle, a thyratron which has previously been fired during that same cycle will be extinguished and the. control lever 17 will not operate during the ne-xt machine cycle unless one or other of the thyratrons has again fired.
  • a suitable power source schematically indicated at 46 which is also arranged to feed the photo-cell 48 and its associated lamp 49.
  • Fig. 5 the circuit arrangement shown in Fig. 5 is a skeleton arrangement-and. purely illustrative of many possible conventional arrangements. In practicemany other components may be used, depending upon the operating characteristicsof the thyratrons and relays selected at. the discretion of the, user.
  • the thyratrons and associated equipment may-be housed in a casing 47 beneath the machine 1 as shown-in Fig. 1 but this casing has been omitted from Fig. 2 as being unnecessary for a proper understanding of the invention.
  • the location and mounting of the equipment within the casing. 47. has also not beenshown in Fig. 2 as it may follow. conventional practice.v
  • the electrical leads from the photo-cell unit 50, cams35, 36, 37 and 38v and the relays 30 and 31 have also been. omitted in the interests of clarification of the drawings.
  • a manual control is extremely useful in setting. up the machine initially.
  • the pivot point 18 is transferred to a plate 51 (Fig. 2) pivoted to the machine at 52 and the plate 51 is.provided with a control handle 53 projecting away from the machine.
  • the plate 51 also carries an indicating pointer 54which travels over a scale 55 as handle 53 is moved.
  • the scale 55 may be engraved on a window 56 (Fig. 1) provided in a casing 57 of the upper part of the machine. Its spacial relationship to pointer 54 is also-indicated on Fig. 2.
  • the pivot 18 is in the form of a clamping screw.
  • a gauge is provided, which is shown in Fig. 4.
  • This gauge is in the form of a measuring rule 58 of transparent material at one end of which is a plurality of cap size lines 59 and at the other a scale 60 of numbered registration marks corresponding to the markings of scale 55.
  • the distance between that one of the lines 59 selected for the cap size in use and oneof the scale marks 60 represents a gauge length corresponding to a multiple of e. g. five times the diameter of the cap to be madeby the machine. Using a multiple gauge length gives greater accuracy.
  • a length of the printed foil 2 isplaced, printed side uppermost, on a flat surface and the, gauge 58 is laid over the foil with the line 59 representingthe selected cap size placed against one edge of one of. the registration marks 4, on the foil,2.
  • the long line 62 indicates the recommended length of the foil, whilst the short lines 61 and 63 on either side thereof denote the maximum and minimum five cap diameters which the machine can successfully accommodate. Provided the said fifth registration mark on the foil lies between the upper and lower limits represented by lines 61 and 63, the foil will be satisfactory for obtaining registration. If not, the foil should be rejected as non-standard.
  • the gauge 58 is then moved across the width of the foil 2 so that the registration marks 4 lie under the opposite edge of the gauge, still keeping the selected cap size line on one edge of the registration mark: five cap pitches or diameters are then counted down the gauge towards the scale 60 and the division under which the fifth registration mark falls is noted.
  • the handle 53 is then released by undoing pivot clamping screw 18 and moved until the pointer 54 is brought opposite the similarly numbered division on scale 55 and the screw 18 tightened.
  • a visual indication of the running characteristics is also provided.
  • This comprises a pointer 64 pivotally secured to the machine at 65 (Fig. 2) and at 66 to a lever arm 67 which is secured to the control lever 17.
  • a cursor 68 is pivoted to the free end of the pointer 64 so that during movement of control lever 17 the pointer tip moves in an arcuate path and the cursor travels up and down a scale 69 provided on a second window 70 in the casing 57.
  • the spacial relationship of cursor 68 to scale 69 is also indicated in Fig. 2.
  • the cursor 68 and scale 69 thus give an.indication of the corrections that are automatically being given to the feed by the control mechanism. When the cursor moves in an upward direaction a small increase of feed takes place and vice versa.
  • the manual feed adjustment handle 53 should be moved upwards by a small amount at a time (say half a division on the scale 55) until the cursor 66 moves occasionally in both directions.
  • a switch 71 is provided for manual operation to energise the increase feed relay 30 independently of energisation by relay 44. Thus, the switch button may be depressed until correctly registered caps are made.
  • an automatic cut-out is provided to allow the impulses from the photo-cell unit 50 to supersede the switch 71 when the caps are being made correctly in register. Such a cut-out may follow conventional practice and therefore has not been illustrated here.
  • the detection of a synchronising error may be arranged to shift the pivot 18 slightly in one direction or another through a high reduction gear so as to effect a slight shift of the neutral position of the slide member 9 relative to the arm 10.
  • the reduction gear may drive a screw which slightly raises or lowers the pivot 18.
  • the screw may be actuated either by each synchronising error detected or after a predetermined number of errors in the same direction have been occurred. This latter result may be achieved by driving the screw through a lostmotion connection. In this way any repetitive lack of synchronising in the same direction will produce semipermanent compensation.
  • Apparatus for forming bottle caps from metal foil bearing a repeating printed pattern representing areas of the caps to be formed comprising a strip-feed-controlling lever arm, means for driving said lever arm to cause it to oscillate about a pivot, a strip-driving means, a connecting rod for actuation of said strip-driving means, a detecting device for detecting any discrepancy in register in the forming of caps from the printed cap areas on the foil, a slide member slidable back and forth along said lever arm and connected to said connecting rod, and control means under control of said detecting device to effect adjustment of said slide member on said lever arm to vary the strip feed produced by a stroke of the arm.
  • said detecting device comprises a photo-cell arranged to respond to spaced marks along the length of the strip to produce signal impulses during each feed stroke, and means for comparing the timing of said impulses with means operating in timed relation with the machine.
  • Apparatus as claimed in claim 3, comprising indieating and gauging means on said manually-operable means to allow a predetermined manual adjustment to be effected.
  • Apparatus for forming bottle caps from metal foil bearing a repeating printed pattern representing areas of the caps to be formed comprising knurled rollers to feed the foil through the machine, a gear-wheel mounted to drive said rollers, a unidirectional drive including a disc mounted coaxially with and for driving said gear-wheel, a connecting rod, one end of which reciprocates said disc to produce intermittent drive of the knurled rollers, a slide member connected to the opposite end of said connecting rod, said slide member also being attached to an oscillating lever arm which is pivoted to a mounting frame for the apparatus, a second connecting rod connected to said lever arm for oscillation thereof, a crank pin located on a second driving disc and operatively connected to said second connecting rod to drive same, and means for driving said second driving disc in timed rela- 7 tion with cap blanking tools operating on said strip so that the said strip will be advanced during part of the machine cycleand will remain stationary during the said operation.
  • Apparatus for forming bottle caps from metal foil bearing a repeating printed pattern representing areas of the caps to be formed comprising a strip-feed-controlling lever arm, means for driving said lever arm to cause it to oscillate about a pivot, a strip-driving means, a connecting rod for actuation of said strip-driving means, a detecting device for detecting any discrepancy in register in the'forming of caps from the printed cap areas on the foil, a rod carried by said lever arm, a slide member carried by said rod, a link pivotally connected at one end to'said slide member and at its other end to a control lever mounted for pivotal movement with respect to said apparatus frame, and control means under control of said detecting device to effect adjustment of said slide member on said rod, to vary the strip feed produced by a stroke of the arm.
  • Apparatus as claimed in claim 8 comprising a second cam, means for driving said second cam from the apparatus drive, a central contact, and a spring contact on either side of said control contact, said control normally resting in engagement with one of said spring contacts, and said second cam being operative to move said control contact from said contact in engagement with which it normally rests to the other spring contact.
  • Apparatus for forming bottle caps from metal foil bearing a repeating printed pattern representing areas of the caps to be formed comprising a support member, a lever mechanism mounted on said support member for intermittently feeding said foil between a pair of blanking tools mounted for mutual reciprocation on said support, a deflecting device mounted on said support for detecting errors in register between said printed areas and said blanking tools, drive means mounted on said support and controlled by said detecting device to synchronise operation of said blanking tools with said printed areas in register, said controlled means including a control lever, 21. plate member pivoted to said support member, pivot means pivoting said control lever to said plate member, and a control handle projecting from said plate member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Labeling Devices (AREA)
US536706A 1954-09-29 1955-09-26 Strip feeding arrangement Expired - Lifetime US2823029A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1056495X 1954-09-29
GB2823029X 1954-09-29

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US2823029A true US2823029A (en) 1958-02-11

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US536706A Expired - Lifetime US2823029A (en) 1954-09-29 1955-09-26 Strip feeding arrangement

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US (1) US2823029A (de)
BE (1) BE541625A (de)
DE (1) DE1056495B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968430A (en) * 1956-12-13 1961-01-17 Colonial Press Inc Electronically controlled book case strip feed mechanism
WO2011000005A1 (de) * 2009-06-30 2011-01-06 Teich Aktiengesellschaft Verfahren zur herstellung geprägter platinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474748A (en) * 1921-07-02 1923-11-20 Riegel Sack Company Web-handling mechanism
US1968030A (en) * 1929-06-11 1934-07-31 Filippis Raymond De Automatic gearless transmission
US2541737A (en) * 1948-07-14 1951-02-13 Arthur F Bardsley Adjustable web feed device for label cutting and folding machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474748A (en) * 1921-07-02 1923-11-20 Riegel Sack Company Web-handling mechanism
US1968030A (en) * 1929-06-11 1934-07-31 Filippis Raymond De Automatic gearless transmission
US2541737A (en) * 1948-07-14 1951-02-13 Arthur F Bardsley Adjustable web feed device for label cutting and folding machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968430A (en) * 1956-12-13 1961-01-17 Colonial Press Inc Electronically controlled book case strip feed mechanism
WO2011000005A1 (de) * 2009-06-30 2011-01-06 Teich Aktiengesellschaft Verfahren zur herstellung geprägter platinen
US20120073352A1 (en) * 2009-06-30 2012-03-29 Constantia Teich Gmbh Method for producing embossed blanks
US8459087B2 (en) * 2009-06-30 2013-06-11 Constantia Teich Gmbh Method for producing embossed blanks

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BE541625A (de)
DE1056495B (de) 1959-04-30

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