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WO1992015456A1 - Appareil et procede de decoration de recipients cylindriques - Google Patents

Appareil et procede de decoration de recipients cylindriques Download PDF

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Publication number
WO1992015456A1
WO1992015456A1 PCT/US1992/001623 US9201623W WO9215456A1 WO 1992015456 A1 WO1992015456 A1 WO 1992015456A1 US 9201623 W US9201623 W US 9201623W WO 9215456 A1 WO9215456 A1 WO 9215456A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
printing
blanket
decorating
set forth
Prior art date
Application number
PCT/US1992/001623
Other languages
English (en)
Inventor
Russell Didonato
Chester Chrobocinski
Original Assignee
Sequa Corporation
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
Application filed by Sequa Corporation filed Critical Sequa Corporation
Publication of WO1992015456A1 publication Critical patent/WO1992015456A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/007—Use of printing belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • B41F17/20—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors
    • B41F17/22—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors by rolling contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/02—Letterpress printing, e.g. book printing
    • B41M1/04—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/06—Lithographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks

Definitions

  • This invention relates to high speed con- tinuous motion can decorators and more particularly relates to a can decorator of this type which, in addition to utilizing offset means for printing a main image, provides auxiliary image printing plates that make direct engagement with the can.
  • U.S. Patent 4,921,093 issued May 1, 1990 to
  • A. Peters et al. entitled Infeed Means for High Speed Continuous Motion Can Decorator discloses high speed continuous motion can decorating apparatus that utilizes offset printing techniques for decorating all cans with the same indicia.
  • Other examples of con ⁇ tinuous motion high speed can decorators of this type are also disclosed in U.S. Patents Nos. 3,563,170, 3,766,851 and 3,976,187.
  • tn e device of the '093 patent is modified by adding a plurality of direct printing units the latter having print indicia that is changed for each revolution of a continuously rotating mandrel wheel that carries the cans through a printing zone where both main (printed by offset blanket segments) and auxiliary images
  • the primary object of the in ⁇ stant invention is to provide an improved construction for direct printing units that are carried by a con ⁇ tinuously rotating offset printing blanket wheel of a continuous motion apparatus for decorating cylindrical objects.
  • Another object is to provide apparatus of this type constructed so that the direct printing units are readily mounted and dismounted from the blanket wheel.
  • Still another object is to provide a direct printing unit of this type that having means that permits adjustment of direct printing pressure without dismounting the unit from the blanket wheel.
  • a further object is to provide apparatus of this type in which each of the direct printing units utilizes a timing belt to impart step-like motion to direct printing plates that are mounted along the length of the timing belt on the surface thereof opposite the timing belt surface having transverse driving teeth.
  • a still further object is to provide a novel method for decorating cylindrical objects by utilizing a combination of offset and direct printing techniques.
  • Yet another object is to provide a method of this type in which the container is positively rotated about its own axis during direct printing thereon at the same speed used for offset printing thereon.
  • FIG. 1 is a front elevation of continuous motion can decorating apparatus constructed in accord ⁇ ance with teachings of the instant invention.
  • Fig. 2 is an enlarged front elevation illustrating a fragmentary portion of the blanket wheel and one of the direct printing unit mounted thereto.
  • Fig. 3 is an enlarged front elevation of a direct printing unit constructed in accordance with teachings of the instant invention.
  • Fig. 4 is a cross-section taken through line 4-4 of Fig. 3 looking in the direction of arrows 4-4.
  • Fig. 5 is a fragmentary edge view of the blanket wheel looking in the direction of arrows 5-5 of Fig. 2.
  • Fig. 6 is a fragmentary cross-section of the eccentric for adjusting printing pressure of the direct print unit.
  • Fig. 7 is a fragmentary cross-section of one of the mounting pivots for the direct printing unit.
  • Fig. 8 is a fragmentary view of the front surface of a relatively narrow printing belt.
  • Fig. 9 is a cross-section taken through line 9-9 of Fig. 8 looking in the direction of arrows 9-9.
  • Fig. 10 is a side elevation of a decorated can mounted on a mandrel.
  • Fig. 11 is a side elevation of a direct printing unit constructed in accordance with teachings of a second embodiment of the instant invention.
  • Fig. 12 is an enlarged fragmentary end view of the direct printing unit of Fig. 11 looking in the direction of arrow 12 in Fig. 11.
  • Fig. 13 is a side elevation of a locking device looking in the direction of arrows 13-13 of Fig. 12.
  • Fig. 14 is an expanded view illustrating the relationship between the drive sprocket and certain other elements which define paths for the closed loop printing belts.
  • Figs. 15 through 18 are schematics illus- trating the paths taken by the respective closed loop printing belts.
  • FIG. 1 illustrates continuous motion cylindrical container decorating apparatus of the general type described in U.S. Patent No. 4,140,053 issued February 20, 1979 to J. P. Skrypek et al. for a Mandrel Mounting and Trip Mechanism for Continuous Motion Decorator, as well as in the aforesaid U.S. Patent No. 4,921,093 issued May 1, 1990 to A. Peters et al -
  • the apparatus of Fig. 1 includes infeed conveyor chute 15 which receives cans 16 from a supply not shown and directs them to arcuate cradles or pockets 17 along the periphery of spaced parallel rings secured to pocket wheel 12.
  • the latter is fixedly secured to continuously rotating mandrel carrier wheel 18 which in turn is keyed to continuously rotating horizontal drive shaft 19.
  • Horizontal spindles or mandrels 20, each rotatable about its own cylindrical axis, are mounted to wheel 18.
  • each spindle 20 is in spaced axial alignment with an individual pocket 17 in a short region extending downstream from infeed conveyor 15.
  • Each undecorated can 16 is transferred from each pocket 17 to a mandrel by wiping against stationary arm 42 which is angled inwardly in the downstream direction so as to function as a cam that drives can 16 horizontally (axially) toward mandrel 20. Suction applied to an axial passage of mandrel 20 draws the latter to final seating position.
  • cans 16 While mounted on mandrels 20 cans 16 are decorated by being brought into engagement with one of the image transfer mats or blanket segments 21 of the multicolor printing unit indicated generally by reference numeral 22. Thereafter, and while still mounted on mandrels 20 the outside of each decorated can 16 is coated with a protective film or varnish applied by engagement with the periphery of rotating applicating roll (not shown) rotating on shaft 23 in the overvarnish unit indicated generally by reference numeral 24. Can 16 with decorations and a protective coating thereon are then transferred from mandrels 20 to suction cups (not shown) mounted along the periphery of transfer wheel (not shown) rotating on shaft 28 of transfer unit 27. In transfer unit 27 cans 16 are deposited on generally horizontal pins 29 carried by chain-type output conveyor 30 which carries cans 16 through a curing oven (not shown).
  • each blanket segment 21 engages a plurality of printing cylinders 31 each of which is associated an individual ink unit 32.
  • each of the inker units 32 includes a plurality of doctor elements that produce a controlled film of ink that is applied to a printing cylinder 31.
  • Each unit 32 provides a different color ink and each printing cylinder 31 applies a different image segment to blanket segments 21. All of these image segments are combined to produce a main image on each blanket segment 21, which main image is trans ⁇ ferred to undecorated cans 16 in a printing region that commences slightly counterclockwise of the most counterclockwise printing cylinder 31.
  • each of the blanket seg ⁇ ments 21 is cemented to an individual segment 43 along the periphery of generally hollow blanket wheel 40 that rotates continuously about its central axis 44 as a center.
  • an individual direct printing unit 45 that includes anvil 46 disposed immediately upstream of segment 43 generally in curved alignment with blanket segment 21.
  • Each direct print ⁇ ing unit 45 is constructed of vertically extending spaced parallel side plates 51, 52 that support a plurality of horizontal shafts and elements mounted thereto including anvil 46. More particularly, lower shaft 53 extends between plates 51, 52 and through the former to the outside of unit 45 where manually engage ⁇ able knob 54 is mounted thereto.
  • sprocket 54 Keyed to shaft 53 is sprocket 54 that is connected through drive belt 55 to drive sprocket 56 that is pivotally mounted on upper shaft 57 which also extends between plates 51, 52 and projects through the former to the outside of unit 45 where ratchet wheel 58 is keyed to shaft 57.
  • drive sprocket 56 and shaft 57 are mounted on respective one-way clutches 61, 62.
  • Rocker 59 is pivotally mounted on shaft 57 outboard of plate 51. End 63 of pawl 60 is pivotally mounted to rocker 59 and the other end 64 of pawl 60 is biased clockwise with respect to Fig. 3 against the toothed periphery of ratchet wheel 58 by tension spring 65 that is connected at its ends 66, 67 to projections that extend respectively from pawl 60 and rocker 59.
  • tension spring 65 that is connected at its ends 66, 67 to projections that extend respectively from pawl 60 and rocker 59.
  • rocker 59 Clockwise pivoting of rocker 59 causes pawl end 64 to ride along the periphery of ratchet wheel 58 with the latter being maintained against movement by one-way clutch 62.
  • the end of rocker 59 remote from pawl 60 is connected at pivot means 71 to one end of connecting link means 70 whose other end is connected by pivot means 72 to another rocker 75 that is mounted by pivot means 76 to blanket wheel 40.
  • Cam follower roller 77 is mounted to freely rotate on rocker 75 at a point remote from the attachment of link 70.
  • follower 77 rides in closed loop cam track or groove 78 that is cut in the left fact of plate 79 (Fig. 5) which is fixedly secured to stationary frame 80 that supports blanket wheel 40.
  • cam track 78 drives follower 77 toward and away from the rotational axis for blanket wheel 40, with the most radial inward position of the center for follower 77 being indicated by arc 81 (Fig. 3) and the most outward position being indicated by arc 82.
  • Movement of follower 77 radially outward pivots rocker 75 counterclockwise with respect to Fig. 3 thereby driving link 70 so that rocker 59 also pivots counterclockwise and in so doing carries pawl 60 so that it steps ratchet wheel 58 an incre ⁇ mental distance counterclockwise.
  • the latter acts through timing belt 55 to drive sprocket 54 that is keyed to lower shaft 53.
  • sprockets 83, 84 that are maintained in spaced relationship by sleeve 86.
  • Sprockets 83, 84 drivingly support the ends of relatively wide flexible timing belt 85 in the form of a closed loop that is also defined by anvil 46 and tension roller 87.
  • a frag ⁇ mentary longitudinal cross-section of belt 85 is seen in Fig. 9.
  • Transverse teeth 95 are formed along the inner surface and raised portions 97 which form the auxiliary image receive ink that is applied directly to cans 16.
  • Roller 87 is mounted on arm 88 which is mounted to pivot 89 of anvil support 91 by connecting strip 92. The opposite ends of anvil support 91 are secured to the respective side plates 51, 52.
  • Eccentric 93 pivotally mounted on arm 88 and having its edge engaged with support 91, provides means for adjusting the position of roller 87 to tension belt 85.
  • belt 85 is stepped by an incremental distance so that a different portion on the outer surface thereof is supported by anvil 46 in a position to be engaged by an undecorated can 16 after the latter has most if not all of the main image applied thereto by rolling over blanket segment 31 counterclockwise of anvil 46 in Fig. 3.
  • Belt 85 is a timing belt having driving ribs ex ⁇ tending completely across the interior surface thereof. The exterior surface of belt 85 is divided into incre ⁇ mental lengths that will be supported one at a time by anvil 46.
  • Each of these incremental lengths comprises a different indicia in the form of illustrations, and/or numbers.
  • Ink is applied to the exterior or printing plate surface of the incremental length supported by anvil 46, either by a printing cylinder 31 dedicated for that purpose only or a printing cylinder 31 having a raised portion shaped and disposed to engage the direct printing plate segment of belt 85.
  • Direct printing unit 45 is provided with axially aligned apertures 91 in side plates 51, 52 which receive horizontally extending support pins 92 (Fig. 7) that extend in the same direction from spaced vertical walls of blanket wheel 40 with the pin 92 that extends through aperture 91 of plate 52 being longer than pin 92 that extends through aperture 91 of plate 51.
  • Plate 51 is also provided with vertically elon ⁇ gated oval aperture 93 to receive eccentric 94 (Fig. 5 6) that projects outboard from blanket wheel 40 and is pivotally mounted thereto.
  • eccentric 94 adjusts the position of anvil 46 by pivoting unit 45 about aligned mounting pins 92, 92 as a center thereby adjusting engagement pressure between printing belt 85 1 0 and can 16.
  • Side plate 51 is also provided with over ⁇ sized clearance apertures 96, 96.
  • An individual lock ⁇ ing screw 97 passes through each aperture 96 and is threadably received by an aperture in blanket wheel 40 to lock direct printing unit 45 in its adjusted posi- 15 tion on blanket wheel 40.
  • Belt 3 0 85 remains stationary with respect to anvil 46 while ink is applied to the printing plate that is supported by anvil 46. This fixed relationship is maintained while the auxiliary image is printed on can 16. Thereafter, each time anvil 46 moves past the eight o'clock position belt 85 is advanced an incremental distance. As seen in Fig. 5, blanket supporting seg ⁇ ment 43 and blanket segment 21 supported thereby are notched to form upstream extension 98 at one side of blanket segment 31. Anvil 46 is positioned in the notched portion of blanket segment support 43.
  • Ex- tension 98 frictionally engages the sidewall of can 16 adjacent the open end thereof and/or frictionally engages mandrel 20 so that can 16 is positively rotated about mandrel axis 99 while can 16 is in direct engage ⁇ ment with a printing plate that is supported by anvil 46 so that while the auxiliary image is being applied to can 16 rotation of the latter is not dependent solely upon a friction force derived from direct engagement between belts 85 and can 16.
  • the auxiliary image is printed by belt 85 in a field 101 (Fig. 10) that is formed when the main image is applied to can 16 by engagement thereof with offset blanket segment 21.
  • a portion of the main image is transferred from extension 98 of blanket segment 30.
  • field 101 is illustrated as being a blank rectangular space having its major axis parallel to the rotational axis for can 16.
  • field 101 is defined by spaced relatively long parallel main sides 102, 103 connected by relatively short ends 104, 105.
  • end 105 is the first boundary portion of field 101 to be formed.
  • side 102 is formed, followed by side 103 followed by end 104.
  • Stepping of belt means 85 may be discon ⁇ tinued by removing link 70. This may be accomplished readily by merely removing the connecting pins at opposite ends 71, 72 of link 70.
  • the direct printing belt means illustrated consists of a plurality of relatively narrow belts whose lengths differ from one another by an incremental length, as described in the aforesaid U.S. Patent No. 4,884,504.
  • Unit 145 includes side plates 146, 147 that are maintained in spaced parallel relationship by anvil support 148 and support a plurality of transverse shafts 149 through 155.
  • the end of shaft 150 that extends through side plate 146 is supported therein by one-way clutch 157.
  • Rocker 59 is pivotally mounted at the free end of shaft 150 that extends through plate 146 and ratchet wheel 65, keyed to shaft 156, is interposed between plate 146 and rocker 59. Keyed to shaft 150 is drive sprocket 156.
  • Unit 145 is provided with a plurality of relatively narrow printing belt means 201-204 which are stepped to move in the respective closed loop paths illustrated in Figs. 15 through 18.
  • Each of these loops is partially defined by an individual tensioner arm at a curved corner of relatively large radius. That is, belt 201 is supported at curved corner 163 of tensioner arm 159. Pivot 160 at the end of arm 159 remote from corner 163 mounts arm 159 to anvil support 148. Eccentric 162 is keyed to shaft 161 that is pivotally mounted to anvil support 148 and extends through a clearance aperture in plate 146. The edge of eccentric 162 engages the edge of arm 159 to adjust the position thereof relative to anvil support 148 and in so doing adjusts the tension for belt 201.
  • adjusting shaft 161 extends through a clearance aperture in lock member 143 and is clamped thereto by tightening screw 164.
  • screw 165 clamps adjusting shaft 166 that also extends through locking member 143.
  • shaft 166 mounts eccentric 177 which is engaged with tensioner arm 168 having large radius corner 169 which partially defines the path for belt 202.
  • Large radius corner 171 (Fig. 17) of tensioner arm 172 partially defines the path for belt 203.
  • Arm 172 is adjustable through the operation of cam 173 mounted on shaft 174 extending through a clearance aperture in another locking member 143 that is outboard of side plate 147.
  • Stub shaft 176 mounts eccentric 177 for adjusting tensioner arm 178 having relatively large diameter corner 179 that partially defines the loop path for printing belt 204 (Fig. 18) and extends through locking member 143 that is disposed outboard of side plate 147.
  • belt 202 is an incremental length longer than belt 201
  • belt 203 is an incremental length longer than ' belt 202
  • belt 204 is an incremental length longer than belt 203.
  • Each of the belts 201-204 is a so-called timing belt having transverse interior teeth that extend across the entire width thereof.
  • this idler is recessed at the center thereof so that the raised ink carrying printing components do not play any part in adjusting belt tension.
  • idlers 182 Fig. 14
  • narrow ledges 141, 142 which engage margins along the edges of the respective printing belts 201-204.

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  • Printing Methods (AREA)

Abstract

Appareil de décoration à mouvement continu pour récipients cylindriques doté d'une unité d'impression directe (45) utilisée pour imprimer une image auxiliaire sur la surface cylindrique d'un récipient sur lequel a été imprimée une image principale par un segment de blanchet offset (43) de l'appareil de décoration. L'unité d'impression directe (45) comprend une pluralité de plaques d'impression directe disposées en tandem sur une courroie (85) à boucle fermée, chacune de ces plaques portant une image auxiliaire différente. Les segments de blanchet offset (43) sont montés à la périphérie d'une roue de blanchet tournant en continu. Une unité d'impression directe individuelle (45), montée sur la roue de blanchet (40) est prévue pour chaque segment de blanchet (43) et elle comprend une enclume (46) disposée au niveau de l'extrémité amont du segment de blanchet (43) afin de supporter une plaque d'impression à la fois, dans sa position d'impression. A chaque révolution de la roue de blanchet (40), la courroie (85) est avancée d'une longueur incrémentielle afin d'amener une nouvelle plaque d'impression en position d'impression.
PCT/US1992/001623 1991-03-08 1992-02-28 Appareil et procede de decoration de recipients cylindriques WO1992015456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66638791A 1991-03-08 1991-03-08
US666,387 1991-03-08

Publications (1)

Publication Number Publication Date
WO1992015456A1 true WO1992015456A1 (fr) 1992-09-17

Family

ID=24673965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/001623 WO1992015456A1 (fr) 1991-03-08 1992-02-28 Appareil et procede de decoration de recipients cylindriques

Country Status (4)

Country Link
AU (1) AU1539692A (fr)
MX (1) MX9201007A (fr)
WO (1) WO1992015456A1 (fr)
ZA (1) ZA921685B (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261281A (en) * 1965-01-25 1966-07-19 Coors Porcelain Co Continous printer and transfer unit
US3348478A (en) * 1965-02-04 1967-10-24 American Paper Prod Rotary endless chain printing machine
US3613571A (en) * 1968-02-27 1971-10-19 Brown Machine Co Of Michigan Container printing machine and method of printing
US4327637A (en) * 1978-07-15 1982-05-04 Takeuchi Press Industries Co., Ltd. Apparatus for four-color halftone printing
US4884504A (en) * 1987-08-14 1989-12-05 Ian Sillars Method for printing of quasi random number tables on cylindrical objects

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261281A (en) * 1965-01-25 1966-07-19 Coors Porcelain Co Continous printer and transfer unit
US3348478A (en) * 1965-02-04 1967-10-24 American Paper Prod Rotary endless chain printing machine
US3613571A (en) * 1968-02-27 1971-10-19 Brown Machine Co Of Michigan Container printing machine and method of printing
US4327637A (en) * 1978-07-15 1982-05-04 Takeuchi Press Industries Co., Ltd. Apparatus for four-color halftone printing
US4884504A (en) * 1987-08-14 1989-12-05 Ian Sillars Method for printing of quasi random number tables on cylindrical objects

Also Published As

Publication number Publication date
AU1539692A (en) 1992-10-06
ZA921685B (en) 1992-12-30
MX9201007A (es) 1992-09-01

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