US3229629A - Cylinder supporting and separating mechanism for cloth printing machines - Google Patents

Cylinder supporting and separating mechanism for cloth printing machines Download PDF

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Publication number
US3229629A
US3229629A US380593A US38059364A US3229629A US 3229629 A US3229629 A US 3229629A US 380593 A US380593 A US 380593A US 38059364 A US38059364 A US 38059364A US 3229629 A US3229629 A US 3229629A
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Prior art keywords
printing
roll
gear
central
axle
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US380593A
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English (en)
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Conchon Andre Francois
Maspero Engelbert Robert
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders

Definitions

  • the cloth printing machine disclosed in the above-identified patent application Serial No. 822,629 employs a number of satellite printing rolls which are circumferentially arranged about the periphery of a large diameter central roll.
  • a longitudinal central axle connected with the central roll and passing therethrough is suitably journalled. so that a motor may rotate the central roll by directly rotating the axle.
  • a continuous web of cloth material or the like, which is to be printed upon, is situated between the surfaces of the large diameter central roll and the satellite printing rolls. As the large diameter central roll rotates, the continuous web is carried in a circumferential path around the rotating central roll. None of the satellite printing rolls, which are in pressure contact with the surface of the central roll through the intermediate web therebetween, has a separate direct drive means. Each of the satellite printing rolls is rotated by virtue of being in pressure contact with the web and the rotating central roll.
  • each satellite printing roll is in the form of a hollow cylinder and has situated in the interior thereof a squeegee roll, or dye-applying roll.
  • a printing dye, or ink is introduced into the hollow printing roll and the squeegee roll, having a smaller diameter than the diameter of the printing roll, rolls on the peripheral interior surface of the larger diameter satellite printing roll, thereby applying the printing dye, or ink, to the interior surface of the satellite printing roll; the dye, or ink, so applied passing through the pervious surface pattern of the printing roll and being applied to the web to be printed upon.
  • the squeegee roll, or dye-applying roll, situated within the hollow printing roll evenly distributes the dye, or ink, over the entire peripheral surface of the satellite printing roll, thereby contributing to the achievement of a uniformly printed pattern on the web.
  • the rotatable squeegee roll or dye-applying roll, was formed from a metal tubulation or other suitable material, for example stainless steel, which could be coated with a resilient plasice tic or elastomeric material.
  • the tubular squeegee roll was provided with an axle extending longitudinally through the tubular roll from both ends thereof. Arms rigidly fixed to an axle, or mandrel, of the printing roll have ball bearing journals at the ends thereof. These ball bearing journals support the respective extending ends of the longitudinal axle of the tubular squeegee roll and permit rotation of the tubular squeegee roll only about its own longitudinal axle.
  • the rotation of the satellite printing roll due to friction contact with the web and rotating central roll, causes rotation of the tubular squeegee roll due to friction contact of the internal peripheral surface of the printing roll with the squeegee rolls surface.
  • the printing roll assembly including the tubular squeegee roll situated therewithin, is relatively light in weight, and due to the speed at which the printing roll is rotated by friction with the web and central roll, it is necessary that the freely rotatable squeegee roll rotate at high speeds or low speeds, as desired, without encountering excessive frictional forces which would seriously impede rotation of the squeegee roll. Because of the dyes, or printing inks employed, great difficulty has been encountered in attempting to ensure the unimpededv accurate rotation of the squeegee roll.
  • support arms are provided for supporting the extending ends of the axles or mandrels of the printing rolls. These supporting arms, holding the printing rolls, are necessary in order to enable a shifting of the printing rolls; i.e., so that the printing rolls may be advanced or retracted with respect to the central rolls peripheral surface.
  • these supporting arms include worm screws which, when rotated, advance the satellite printing rolls toward the central roll and into contact therewith so that the required degree of pressure contact on the web between the printing rolls and the central roll is exerted.
  • Such an arrangement of complex hydraulic and/ or pneumatic means also function to achieve the high pressures required for the contact between the printing rolls and the central roll so that the ink can be transferred from the printing roll to the web to be printed.
  • visual indicators are required in order to enable the operator check the actual pressures occurring.
  • special controls such as switches or the like, are employed for regulating these pressures.
  • Another difficulty encountered with cloth printing machines of the types hereinbefore described is involved in synchronizing and aligning all of the satellite printing rolls relative to each other and to the central printing roll so that the designs, or patterns, on the surfaces of said printing rolls are in accurate register for enabling synchronous and accurate repetitive printing on the web.
  • Another problem encountered in the operation of many of the prior art printing machines heretofore marketed is the difficulty in maintaining accurate synchronism of all of the satellite printing rolls during the actual printing operation so that perfect and accurate printing of the design, or pattern, on these printing rolls can be made on the web.
  • misprinting occurred to a greater or lesser degree, depending upon whether the web to be printed on was relatively thin or relatively thick.
  • misprinting would occur and also at very high speeds of operation misprinting would occur due to loss of synchronism among the various printing rolls with respect to the central roll.
  • One object of the present invention is to provide an improved machine for printing designs, or patterns, on cloth webs or the like.
  • Another object of the present invention is to provide an improved bearing arrangement useful for mounting, among others, the squeegee roll, or dye-applying roll, employed in printing machines employing satellite printing rollers for the purpose of eliminating the difiiculties with respect thereto hereinbefore discussed.
  • Another object of the present invention is to provide a new and improved arrangement for advancing and retracting the satellite printing rolls relative to the central roll in order to eliminate the difficulties, hereinbefore discussed, experienced heretofore in the advancement and retraction of the printing rolls.
  • Another object of the present invention is to provide new and improved means for enabling the synchronous alignment of all of the printing rolls relative to each other and to the central roll prior to the actual printing operation so that the designs or patterns on the printing rolls can be printed on the web material in accurate registration, respectively.
  • Another object of the present invention is to provide new and improved means for synchronously maintaining accurate registration of the printing rollers during the actual printing operation so that an accurate registration of the designs on these printing rollers can be repetitively made on the web material.
  • FIG. 1 is a sectioned view of part of a squeegee, or dye-applying, roll showing its construction and axle portion according to the present invention
  • FIG. 2 is a sectioned view of part of the squeegee roll and axle of FIG. 1 showing a specific mounting arrangement in accordance with one embodiment of the present invention
  • FIG. 3 is a sectioned longitudinal view of a portion of the improved printing machine of the present invention showing, among other things, improvements in the arrangement according to the present invention for advancing and retracting the satellite printing rolls relative to the central roll;
  • FIG. 4 is an enlarged end view of the aforesaid advancement and retraction arrangement as viewed along the vantage line 44 in FIG. 3 particularly illustrating the arrangement of the advancing-retracting supporting arm and the particular means for controlling the advancement or retraction thereof;
  • FIG. 5 shows part of an axle or mandrel of a printing roll having a ring arranged in conjunction therewith;
  • FIG. 6 is an end view of the ring of FIG. 5;
  • FIG. 7 is a side view of another ring which is intended to be superimposed over the ring of FIG. 5;
  • FIG. 8 is an end view of the ring of FIG. 7;
  • FIG. 9 shows the rings of FIGS. 58 as assembled on the mandrel or axle of a satellite printing roll
  • FIG. 10 is an enlarged view showing the assembled arrangement of the rings of FIGS. 5-8 with a printing roll;
  • FIG. 11 is a side view of the arrangement shown at FIG. 10;
  • FIG. 12 is an end view of a synchronizing gear arrangement according to the present invention.
  • FIG. 13 is a side view of the gear arrangement of FIG. 12.
  • FIGS. 1 and 2 of the accompanying drawings Illustrated at FIGS. 1 and 2 of the accompanying drawings is the new and improved bearing arrangement for mounting the squeegee roll, or dye-applying roll, according to the present invention; the illustrated arrangement eliminating the drawbacks encountered with the known prior art arrangements.
  • the squeegee, or dye-applying, roll A is formed from a tube 1 which may advantageously be formed from. stainless steel or another like material which is suitable for the purpose. If desired, the tube 1 may be coated with a resilient or flexible material such as an elasto-meric material. Situated within the tubulation 1 is a rod-like body 2 which may be comprised of iron, aluminum, 'Duralumin, magnesium or the like. Although, as shown at FIGS. 1 and 2, only one end section of the squeegee roll A is illustrated, it is to be understood that the other end (not shown) of the squeegee roll A is constructed and arranged in the same manner as shown at FIGS. 1 and 2.
  • each end of the rod-like body 2 includes an internally threaded cavity therein.
  • Each of these internally threaded cavities of the rod-like body .2 receives an externally threaded axle portion 3, or end shaft, therein.
  • one suitable material for the axle shaft 3 is stainless steel, although other suitable metals or plastics may be employed.
  • one extremity of the axle portion 3 is provided with a generally hemispherically shaped cavity 4.
  • the cavity 4 is particularly adapted for receiving a spherical ball 5 (FIG. 2).
  • a suitable material such as a layer 9 of hard chromium.
  • another shaft, or axle, 6 is arranged in line with the axle portion or end shaft 3.
  • the shaft 6, like the shaft 3, has formed in one extremity thereof, a generally hemispherically shaped cavity, like the cavity 4, which is also coated with a layer, like the layer 9, of durable hard chromium.
  • a spherical ball 5 is received in the opposing cavities of the respective shafts 3 and 6.
  • One end of the shaft 6 has, as shown, an externally threaded end section 6a. It is to be understood that at the opposite end (not shown) of the squeegee roll A there extends another axle portion 3, another spherical ball 5, and another shaft '6. Also provided at the ends of each shaft 6 is an arm member 7, which, as shown at FIG. 2, has at one end thereof an internally threaded aperture threadably engaging the externally threaded end section 6a of the shaft 6. At an opposite end of the arm member 7 another aperture which receives the axle, or mandrel, 8 of a satellite printing roll, is provided. Two nuts 66, 6b are provided for locking the arm member 7 on the threaded end section 6a of the shaft 6.
  • the end portion 6a coacting with the internally threaded aperture of the arm 7 and the nuts 6b, 613 permits longitudinal shifting of the shaft 6 relative to the arm 7 and mandrel 8 so that a predetermined alignment of the shaft 6 and squeegee roll A may be achieved.
  • This shifting of the shaft 6 permits appropriate pressure contact of the end cavities of the respective shafts 3 and 6 against the spherical ball 5 to be achieved.
  • the squeegee roll A is permitted to rotate freely with minimum friction; the spherical ball 5 serving as a bearing to prevent excessive frictional heating during rotation of the squeegee roll A and further insuring, during such rotation, the accurate alignment of the freely rotating squeegee roll A relative to the internal peripheral surface of the satellite printing roll of the printing machine.
  • FIGS. 1 and 2 Experience has shown that according to the construction and arrangement illustrated at FIGS. 1 and 2, relatively little wear is experienced by the spherical balls 5 and the surfaces of the cavities in the ends of the shafts 3 and 6. Moreover, after a relatively long period of service, the worn spherical balls 5 can easily be replaced by new spherical balls.
  • a further advantage incident to the construction and arrangement according to FIGS. 1 and 2 is that lubrication of the spherical ball 5 is accomplished during operation by the printing ink or printing dye which is introduced into the hollow satellite printing roll in, for example, the same manner as is disclosed in patent application Serial No. 822,629.
  • FIGS. 3 and 4 Illustrated at FIGS. 3 and 4 is the new and improved system according to the present invention for advancing and retracting a satellite printing roll relative to the large diameter central roll; this construction and arrange ment eliminating the disadvantages hereinbefore described of the known prior art machines.
  • FIG. 3 there is the conventional large diameter central roll C. Extending longitudinally through the center roll C is its hollow axle 11, or mandrel, which, as shown, is journalled for rotation in the concentrically arranged ball bearing structure 14 of a fixed mount D; the axle 11 being rigidly connected to the central roll C. Situated coaxially within the hollow axle 11 is another smaller diameter axle 13 which is journalled for rotative movement independently of the hollow axle 11 and independently of the central roll C on the concentric ball bearing structure 12. Although only one end section of the printing machine is illustrated at FIG. 3, two large diameter bevel gears, such as the one gear 15, are mounted 6 at the opposing ends of the axle 13. As suggested at FIG. 3, and as indicated in more detail at FIG. 4, the bevel gears 15 meshingly engage with a pinion gear 16, one such pinion gear 16 being provided for each satellite printing roll B.
  • a pinion gear 16 one such pinion gear 16 being provided for each satellite printing roll B.
  • each pinion gear 16 includes a central body portion having an internally threaded aperture 17 passing coaxially therethrough. Also, as indicated at FIG. 4, a longitudinal externally threaded worm screw 18 is received in threaded engagement with the internally threaded aperture 17 of the body section of the pinion gear 16. At one end of the worm screw 18 there is provided the end section 19 which is coupled with the pillow member E. Formed in the pillow member E is the crescent-like bearing F, as indica-ted in FIG. 4.
  • a motor 32 rotates the bevel gear 15 through the driving pinion gear 10, whereby rotational movement of the bevel gear 15 is accomplished and, as a result, rotation of the pinion gear 16 is ultimately achieved.
  • longitudinal motion is imparted to the worm screw 18 thereby causing advancement or retraction (depending upon the direction of rotation of the bevel gear 15) of the pillow member E which carries the mandrel, or axle, 8 of the satellite printing roll B. Further fine adjustments may be eflected by turning the screw 20 (FIG. 4), thereby finely adjusting the pressure of the satellite printing roll B against the central roll C.
  • the construction and arrangement according to FIGS. 3 and 4 can easily accomplish accurate advancement and retraction of the printing rolls B to achieve the required pressure contact thereof against the central roll C by energizing the motor 32 for a predetermined duration of time to rotate in a clockwise or counterclockwise direction depending upon whether advancement or retraction of the printing rolls B relative to the central roll C is required.
  • FIGS. 5-11 illustrate the construction and arrangement of the system for the synchronous alignment of all of the satellite printing rolls so that the designs or patterns thereon will be in accurate registration for enabling accurately registered printing on the web material prior to the actual printing operation.
  • each printing roll such as prnting roll B (FIG. 3) is provided with a reference or indexing mark. This mark is aligned next to a hole in a side region of the printing roll.
  • a reference mark or index mark is aligned with a particular tooth on the side gear I.
  • the inner ring 21 is illustrated in FIGS. 5 and 6, whereas the outer ring 28 is illustrated in FIGS. 7 and 8. The inner ring shown in FIGS.
  • the inner ring (FIGS. 5 and 6) has three circumferential slots therein regularly spaced about the outer periphery of the inner ring.
  • the slot 38 has residing therein a spring 23 which is secured to a pin member 24.
  • the three screws or pins 25, 26, and 27 of the outer ring enter the longitudinal slots 37, 3S and 39 of the inner ring (FIGS. 5 and 6).
  • FIGS. 7 and 8 will be pulled in a direction opposite to the rotational direction imparted to the printing roll B during the printing operation and the pin member 29 (as shown at FIGS. 811) will automatically enter hole 30 (FIG. 11) by virtue of the biasing action of the spring 31 (FIG. 11), whereby the printing roll B will become aligned in the exact position required for the accurate printing registration of the design thereon.
  • the hole 30 is provided to coincide with a particular tooth on the side gear or end gear I so as to be coincident with the mark H (FIG. 9) on the printing roll B.
  • FIGS. -12 Will move such that the pin 29 will be automatically introduced into hole 36 whereby the particular printing roll B will be indexed in its appropriate registration position.
  • the hole 30 may be located in any position so that the pin 29 may be introduced thereinto, and after the machine is assembled, the mechanism illustrated in FIGS. -12 may be sequentially adjusted so that all of the printing rolls will be synchronously aligned in their appropriate orientations relative to the central roll C for the accomplishment of accurate registration of their designs or patterns for the repetitive printing on the web materials.
  • the particular teeth of the various side gears, such as I will mesh with the freely rotatable idler gear G (FIG. 3) to enable synchronism during operation of the machine.
  • the printing rolls are advanced by operation of a switch (not shown) which will energize the synchronizing motor 32, the operation of which will drive the bevel gear through the pinion gear 10.
  • the pinion gear 16 will rotate thereby advancing or retracting the worm screws 13 to cause the particular printing roll such as B to make contact with the central roll C.
  • the idler gears I will become emeshed with the side gears G when this is done.
  • the central roll can then be rotated directly by a motor (not shown), whereby the printing rolls such as B are rotated in directions opposite to that direction required to shift the inner ring (FIGS. 7 and 8), causing the pin 29 to slide upwardly in hole 30 so that the inner ring will become shifted away from the surface of the side gear I, the side gear I becoming freed thereafter during the actual printing operation.
  • the inner ring can be turned in the opposite direction to that of the normal rotation of the printing rolls B until the inner ring reaches a particular position whereat the pin 29 will be inserted automatically into the hole 30, the printing roll being then again in the right position for accurate registration of design.
  • FIGS. 3, 12 and 13 Illustrated at FIGS. 3, 12 and 13 is the new and improved arrangements for synchronously maintaining accurate registration of the printing pattern or design by maintaining all printing rolls such as B in synchronization during the actual printing operation.
  • an idler gear G which freely rotates on the bearing K encompassing the shaft or axle 11.
  • the teeth of the idler gear G mesh with the side gear I of the printing roller B so that all of the printing rolls are maintained in synchronism.
  • the coaction between the idler gear G, the side gears I and the printing roll such as B is discussed at great length in patent application Serial No. 822,629.
  • the idler gear construction was improved in order to allow the printing of any web of fabric from the flimsiest to the thickest (e.g., terrycloth towels).
  • the idler gear is comprised of the three toothed gears 34, 33, 33.
  • the two outer gears 33 have the middle or inner gear 34- -situated therebetween.
  • the two outer gears 33 are rigidly fixed to the common hub 35 while the middle gear 34 may be rotated relative thereto so that its teeth may be moved slightly out of alignment with the teeth on the outer gears 33, 33 by means of the spring 36 (FIG. 12) or by hydraulic piston rods or other means to move it out of alignment.
  • the spring 36 FIG. 12
  • hydraulic piston rods or other means to move it out of alignment As a result, it is possible to slightly decrease the space between the teeth of the three gears 33, 33 and 34.
  • the teeth of the side gears I mesh snugly with the idler gear construction shown at FIGS.
  • the teeth of the conventional side gears which actuate the printing rolls such as B generally have a modulus of l015. Further, in the above-described construction and arrangement, the side gears I have a modulus of 4.
  • a printing machine comprising a central axle, a central relatively large diameter roll secured to said central axle for rotation therewith and having stencil means on the surface thereof with means for distributing printing dye to said stencil means, means rotatably supporting said central axle, a printing roller registry gear rotatably mounted on said central axle and having external teeth on its periphery, at least one printing roller shaft, a satellite gear means connecting said satellite gear to said printing roller shaft for rotation therewith, a printing roller secured to said printing roller shaft for rotation therewith, movable cradle means for rotatably supporting said printing roller shaft in a position adjacent the periphery of said central roll, a printing roll positioning gear, means rotatably mounting said positioning gear for rotation independently of said central roller and concentrically to said central axle, gear means peripherally engaging said positioning gear and driving said cradle upon rotation of said positioning gear to displace said cradle radially in respect to said central roller in accordance with the rotation of said positioning gear, and motor means for rotating said positioning gear for positioning said printing roller in operative engagement
  • a printing machine comprising a central axle, a central relatively large diameter roll secured to said central axle for rotation therewith and having stencil means on the surface thereof with means for distributing printing dye to said stencil means, means rotatably supporting said central axle, a printing roller registry gear rotatably mounted on said central axle and having external teeth on its periphery, at least one printing roller shaft, a satellite gear means connecting said satellite gear to said printing roller shaft for rotation therewith, a printing roller secured to said printing roller shaft for rotation therewith, movable cradle means for rotatably supporting said printing roller shaft in a position adjacent the periphery of said central roll, a printing roll positioning gear, means rotatably mounting said print positioning gear for rotation independently of said central roller and concentrically to said central axle, gear means peripherally engaging said positioning gear and driving said cradle upon rotation of said positioning gear to displace said cradle radially in respect to said central roller in accordance with the rotation of said positioning gear, motor means for rotating said positioning gear for positioning said printing roller in operative engagement

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US380593A 1962-08-17 1964-07-06 Cylinder supporting and separating mechanism for cloth printing machines Expired - Lifetime US3229629A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563951A (en) * 1984-03-23 1986-01-14 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Clamping and adjusting device for the smoothing means on the storage cylinder of a sheet offset press
US4735141A (en) * 1986-04-30 1988-04-05 Heidelberger Druckmaschinen Ag Device for safeguarding a rotary printing mahine
US5481973A (en) * 1994-03-01 1996-01-09 Heidelberger Druckmaschinen Ag Device for stiffening a rotary printing press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900829C2 (de) * 1979-01-11 1983-06-01 Mathias 4815 Schloss Holte Mitter Rakelrolle für eine rotierende Schablone

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896899A (en) * 1907-12-04 1908-08-25 Wilhelm Jven Multicolor-printing machine.
US1159243A (en) * 1914-06-29 1915-11-02 Hans Jens Meyer Adjusting device for pattern-cylinders of printing-machines.
US1346377A (en) * 1920-07-13 Metal beabxktg
US1612949A (en) * 1926-04-05 1927-01-04 George W Simpson Fabric-printing machine
GB531258A (en) * 1939-01-23 1941-01-01 Thomas Green & Son Ltd Improvements in lawn mowers
US2581593A (en) * 1945-12-26 1952-01-08 Luttenauer Carlos Device for mounting engraved cylinders in machines for printing cloth and the like
US2587606A (en) * 1946-06-11 1952-03-04 Dungler Julien Cylinder adjusting means for machines for printing fabrics, paper, and other materials
US2874635A (en) * 1955-02-11 1959-02-24 Maschf Augsburg Nuernberg Ag Journal for printing cylinder
US2893310A (en) * 1954-08-11 1959-07-07 Johnson James Reid Roll moving means for rotary printing apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1346377A (en) * 1920-07-13 Metal beabxktg
US896899A (en) * 1907-12-04 1908-08-25 Wilhelm Jven Multicolor-printing machine.
US1159243A (en) * 1914-06-29 1915-11-02 Hans Jens Meyer Adjusting device for pattern-cylinders of printing-machines.
US1612949A (en) * 1926-04-05 1927-01-04 George W Simpson Fabric-printing machine
GB531258A (en) * 1939-01-23 1941-01-01 Thomas Green & Son Ltd Improvements in lawn mowers
US2581593A (en) * 1945-12-26 1952-01-08 Luttenauer Carlos Device for mounting engraved cylinders in machines for printing cloth and the like
US2587606A (en) * 1946-06-11 1952-03-04 Dungler Julien Cylinder adjusting means for machines for printing fabrics, paper, and other materials
US2893310A (en) * 1954-08-11 1959-07-07 Johnson James Reid Roll moving means for rotary printing apparatus
US2874635A (en) * 1955-02-11 1959-02-24 Maschf Augsburg Nuernberg Ag Journal for printing cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563951A (en) * 1984-03-23 1986-01-14 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Clamping and adjusting device for the smoothing means on the storage cylinder of a sheet offset press
US4735141A (en) * 1986-04-30 1988-04-05 Heidelberger Druckmaschinen Ag Device for safeguarding a rotary printing mahine
US5481973A (en) * 1994-03-01 1996-01-09 Heidelberger Druckmaschinen Ag Device for stiffening a rotary printing press

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AT252858B (de) 1967-03-10

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