US3718085A - Apparatus for printing on cylindrical articles - Google Patents

Apparatus for printing on cylindrical articles Download PDF

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Publication number
US3718085A
US3718085A US00109796A US3718085DA US3718085A US 3718085 A US3718085 A US 3718085A US 00109796 A US00109796 A US 00109796A US 3718085D A US3718085D A US 3718085DA US 3718085 A US3718085 A US 3718085A
Authority
US
United States
Prior art keywords
drum
printing
cradle
articles
cylindrical
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
US00109796A
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English (en)
Inventor
G Perret
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.)
GENECO Inc CH
Geneco Inc
Original Assignee
Geneco Inc
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 Geneco Inc filed Critical Geneco Inc
Application granted granted Critical
Publication of US3718085A publication Critical patent/US3718085A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F17/36—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on tablets, pills, or like small articles

Definitions

  • a printing machine for automatically printing cylindri- A e z V cal articles, such as tubes, has a stereotype on the Forelgn Apphcatlon Pnonty Data cylindrical surface of a rotatable drum.
  • a member Jan. 28. 1970 Switzerland ..1210/70 having a Surface in the form of a Sector of a cylinder is floatably mounted on a rigid orientable cradle.
  • This invention concerns the printing of generally cylindrically shaped articles such as, for example, tubes of glass or synthetic material of very small diameter.
  • SUMMARY OF THE INVENTION lt is an object of the invention to provide a machine for printing generally cylindrical shaped articles which is free of the above-mentioned drawbacks.
  • the invention therefore provides, in a printing machine for automatically printing generally cylindrical shaped articles, comprising printing means on a cylindrical surface of a drum rotatable about a central axis, the improvement comprising a member floatably mounted on a rigid orientable cradle.
  • Said member has a surface in the form of a sector of a cylinder located outside of and, when the member is in a rest position, concentric with said drum so as to define a delivery surface for articles to be printed.
  • Spring means urge the member towards the drum, and stop means on the cradle cooperate with the member to define said rest position in which the separation between delivery surface of the member and the cylindrical surface of the drum has a minimum value less than the diameter of an article to be printed.
  • a generally cylindrical shaped article rolled along said delivery surface by rotation of the drum is evenly pressed against the printing means by displacement of the floating member against the action of the spring, so as to enable compensation for any irregularity of shape of the generally cylindrical shaped articles.
  • the printing machine shown comprises a rotary drum 1 which can be rotated about a horizontal axis by conventional driving means (not shown), the drum 1 carrying a printing stereotype, for example in plastic material.
  • a cradle 2 is pivotally mounted about a positionally adjustable horizontal axle 3 fixed to the frame of the printing machine.
  • This cradle is formed of two flat bars 6 (only one being visible in the drawing) connected together by four cylindrical cross-bars 7.
  • Each bar 6 has an arcuate cut-away 4 arranged coaxial to the drum, the separation of the cut-aways from the stereotype being adjustable by adjustment of the position of axle 3 and corresponding adjustment of a regulating screw 5 connected to the frame.
  • a floating member 8 having a surface 11 in the shape of a cylindrical sector is freely mounted in the cradle 2, shoulders 9 of this member being urged against the two inner cross-bars 7 by means of a conical compression spring 10.
  • the surface 11 is, in its normal position, concentric to the drum surface and is covered by a rolling layer 12 in synthetic rubber having two ribs tangential to the drum, thereby forming a delivery surface along which cylindrical articles to be printed can be rolled.
  • a regulating screw 13 on the frame enables adjustment of the force of the spring 10 urging the member 8 towards the corresponding surface of the stereotype.
  • the spring 10 allows slight movement of the member 8 in all directions.
  • tubes 14 are fed to the drum 1 by means of a feed slope 15, and pass one by one into the space comprised between the delivery surface of the member 8 and the printing stereotype on the drum 1. During this passage, the tube 14 rolls about its axis and is pressed against the printing stereotype by means of the spring 10 and thus is printed with the impression of the stereotype. The unavoidable irregularities of shape of the tubes 14 are thus absorbed by the spring 10, which ensures perfect printing.
  • the member 8 urged by the spring 10 is held in place by the two inner cross-bars 7 of the cradle 2.
  • the latter is positionally adjusted so that the free space between the delivery surface of the member 8 and the surface of the stereotype is normally, i.e., when the shoulders 9 bear against the cross-bars 7, equal to three fifths of the mean diameter of the tubes 14, this space being accurately constant all along the delivery surface.
  • irregularities consisting of an ovalisation or conicity of the tubes 14, or caused by friction or by protrusion of the stereotype above the working surface of the drum, are absorbed by the mobility of the member 8 which floats between the bars 6 of cradle 2 and is held solely by its spring 10, which avoids any pivoting of the tube 14 away from its position parallel to the axis of the drum.
  • Two stop members (not shown) in supple rubber, aligned with one another, place the tube 14 at the moment of feed into the delivery space in a position exactly parallel to the drum axis before the tube is urged against the stereotype by the friction bands of the rolling surface.
  • the described device has several advantages over known devices.
  • the use of known printing machines is difficult in as much as adjustment of the delivery surface is difficult. It is always found that several tubes become skewed, which leads to defective printing. This fault is eliminated with the described device.
  • the mobility of the member 8 additionally enables an appreciable diminution of the spring pressure, which avoids streaks of ink upon printing the first line of the stereotype caused by a slight sliding of the article being printed at the moment when it overlaps the stereotype. The quality of the printing is thus greatly improved. Dismantleing of the member 8 for cleaning takes place easily by removing it from the stop-forming cross-bars after having reduced the pressure of the spring as much as possible.
  • the suppleness afforded by the described device enables printing of generally cylindrically shaped articles, such as tubes in supple plastic material, tubes in fragile glass, or rods of graphite, which are very difficult to print with known machines.
  • a printing machine for automatically printing generally cylindrical shaped articles, comprising printing means on a cylindrical surface of a drum rotatable about a central axis, a rigid orientable cradle mounted adjacent said drum, a member floatably mounted on said cradle in a manner to allow slight movement of said member in all directions, said member having a surface in the form of a sector of a cylinder located outside of and, when the member is in a rest position, concentric with said drum so as to define a delivery surface for articles to be printed, spring means urging said member towards said drum, and stop means on said cradle cooperating with said member to define said rest position in which the separation between the delivery surface of said member and said cylindrical surface of said drum has a minimum value, said minimum value being less than the diameter of an article to be printed.
  • a printing machine and additionally means for pivotally mounting said cradle about an axis parallel to the axis of rotation of said drum, to adjust for the radial separation between said cradle and said drum.

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  • Rotary Presses (AREA)
  • Printing Methods (AREA)
US00109796A 1970-01-28 1971-01-26 Apparatus for printing on cylindrical articles Expired - Lifetime US3718085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH121070A CH502187A (fr) 1970-01-28 1970-01-28 Dispositif de guidage de pièces cylindriques à imprimer dans une machine à imprimer

Publications (1)

Publication Number Publication Date
US3718085A true US3718085A (en) 1973-02-27

Family

ID=4205076

Family Applications (1)

Application Number Title Priority Date Filing Date
US00109796A Expired - Lifetime US3718085A (en) 1970-01-28 1971-01-26 Apparatus for printing on cylindrical articles

Country Status (2)

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US (1) US3718085A (fr)
CH (1) CH502187A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384518A (en) * 1980-12-01 1983-05-24 Remington Arms Company, Inc. Dry offset printer for cylindrical objects
US4441418A (en) * 1982-02-03 1984-04-10 Adolph Coors Company Overvarnish apparatus for decorator machine
US4572067A (en) * 1983-11-29 1986-02-25 Tecnomara Ag Petri dish imprinting apparatus
US6272983B1 (en) 2000-01-04 2001-08-14 Donna L. Plant Chupurdy Stamping device for irregular surfaces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581589B1 (fr) * 1985-05-13 1988-10-14 Cassou Robert Machine a imprimer des objets cylindriques

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US651329A (en) * 1899-09-21 1900-06-05 Nathan Weiss Cigar-marking machine.
US831323A (en) * 1905-09-28 1906-09-18 Concave And Convex Printing Company Printing-machine.
US988556A (en) * 1909-11-26 1911-04-04 Belding Brothers & Company Machine for printing cylindric surfaces.
US1066488A (en) * 1912-04-08 1913-07-08 Hawaiian Pineapple Co Ltd Machine for marking cans.
US1586310A (en) * 1924-07-01 1926-05-25 American Mach & Foundry Machine for printing arc-lamp carbons

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US651329A (en) * 1899-09-21 1900-06-05 Nathan Weiss Cigar-marking machine.
US831323A (en) * 1905-09-28 1906-09-18 Concave And Convex Printing Company Printing-machine.
US988556A (en) * 1909-11-26 1911-04-04 Belding Brothers & Company Machine for printing cylindric surfaces.
US1066488A (en) * 1912-04-08 1913-07-08 Hawaiian Pineapple Co Ltd Machine for marking cans.
US1586310A (en) * 1924-07-01 1926-05-25 American Mach & Foundry Machine for printing arc-lamp carbons

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384518A (en) * 1980-12-01 1983-05-24 Remington Arms Company, Inc. Dry offset printer for cylindrical objects
US4441418A (en) * 1982-02-03 1984-04-10 Adolph Coors Company Overvarnish apparatus for decorator machine
US4572067A (en) * 1983-11-29 1986-02-25 Tecnomara Ag Petri dish imprinting apparatus
US6272983B1 (en) 2000-01-04 2001-08-14 Donna L. Plant Chupurdy Stamping device for irregular surfaces

Also Published As

Publication number Publication date
CH502187A (fr) 1971-01-31

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