EP3851288A1 - Dispositif d'impression - Google Patents

Dispositif d'impression Download PDF

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Publication number
EP3851288A1
EP3851288A1 EP19858730.5A EP19858730A EP3851288A1 EP 3851288 A1 EP3851288 A1 EP 3851288A1 EP 19858730 A EP19858730 A EP 19858730A EP 3851288 A1 EP3851288 A1 EP 3851288A1
Authority
EP
European Patent Office
Prior art keywords
moving
printing apparatus
driving
exemplary embodiment
moving unit
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.)
Pending
Application number
EP19858730.5A
Other languages
German (de)
English (en)
Other versions
EP3851288A4 (fr
Inventor
Hiroki Takada
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Can Corp
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 Showa Aluminum Can Corp filed Critical Showa Aluminum Can Corp
Publication of EP3851288A1 publication Critical patent/EP3851288A1/fr
Publication of EP3851288A4 publication Critical patent/EP3851288A4/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40731—Holders for objects, e. g. holders specially adapted to the shape of the object to be printed or adapted to hold several objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/413—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material for metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
    • B41J2/2114—Ejecting specialized liquids, e.g. transparent or processing liquids
    • B41J2/2117—Ejecting white liquids

Definitions

  • the present invention relates to a printing apparatus.
  • Patent Document 1 discloses a method of manufacturing a can body including a basic molding step molding a material into a cylindrical unprocessed can body and a printing step performing printing processing on an outer circumferential surface of the unprocessed can body molded in the basic molding step.
  • Patent Document 1 Japanese Patent Application Laid-Open Publication No. 2008-183613
  • a mode for detecting a phase of the can body and starting printing onto the can body can be considered.
  • a mode in which a detection unit to detect a phase of a can body is provided at an installation location of an image forming unit and the phase of the can body is detected after the can body reaches the image forming unit can be considered.
  • the time required to start image formation after the can body has reached the image forming unit becomes longer, and therefore printing efficiency for the can bodies is likely to be deteriorated.
  • An object of the present invention is to increase printing efficiency for the can bodies as compared to a case in which a unit of detecting a phase of a can body is provided on a main body side of a printing apparatus.
  • a printing apparatus to which the present invention is applied includes: an image forming unit performing image formation onto a can body; plural moving bodies each of which supports the can body in a rotatable state and moves toward the image forming unit; and a detection unit provided to each of the moving bodies to detect a phase of the can body.
  • the detection unit detects a phase of a rotation body rotating in synchronization with rotation of the can body to detect the phase of the can body.
  • each of the moving bodies is provided with a transmission shaft for transmitting a rotational driving force to the can body, and a rotation center of the rotation body is positioned at a location deviated from the transmission shaft.
  • the moving body supports plural can bodies, and a phase of each of the plural can bodies is detected by the detection unit that is shared.
  • the printing apparatus is provided with a driving source rotating the can body supported by the moving body, and the driving source is provided at a location different from the moving body.
  • transmission of a driving force from a driving-source-side rotation body provided on a driving source side to a moving-body-side rotation body provided on a moving body side rotates the can body supported by the moving body.
  • use of a magnetic force rotates the moving-body-side rotation body in synchronization with the driving-source-side rotation body to transmit the driving force from the driving-source-side rotation body to the moving-body-side rotation body.
  • the driving-source-side rotation body and the moving-body-side rotation body are disposed in a non-contact state.
  • the printing apparatus is provided with a transmission part disposed along a moving route of the moving body, receiving contact from a part of the moving body, and transmitting a detection result by the detection unit.
  • the printing apparatus is provided with the plural transmission parts, and each of the moving bodies is provided with the transmission part receiving contact from the part included in each of the moving bodies.
  • the plural transmission parts are disposed in line in a direction crossing a direction in which the moving route of the moving body extends.
  • a position of the part included in each of the plural moving bodies in the crossing direction is different per the moving body, and the transmission part with which the part included in each of the plural moving bodies comes in contact is different per the moving body.
  • the present invention it is possible to increase printing efficiency for the can bodies as compared to a case in which a unit of detecting a phase of a can body is provided on a main body side of a printing apparatus.
  • FIG. 1 is a side elevational view of a printing apparatus 500.
  • the printing apparatus 500 is provided with a can body supply part 510 to which can bodies 10 are supplied.
  • the can body 10 is supplied (attached) to a support member 20 supporting the can body 10.
  • the support member 20 is formed into a cylindrical shape and the support member 20 is inserted into the cylindrically-shaped can body 10; thereby the can body 10 is supplied to the support member 20.
  • the can body supply part 510 is provided with an inspection device 92.
  • the inspection device 92 inspects whether or not the can body 10 is deformed.
  • the inspection device 92 is provided with a light source 92A.
  • the light source 92A is provided on one end portion side of the can body 10 and the light source 92A emits laser light that proceeds in an axial direction of the can body 10 along the outer circumferential surface of the can body 10. Further, on the other end portion side of the can body 10, there is provided a light receiving part 92B that receives laser light from the light source 92A.
  • a discharge mechanism 93 discharges the can body 10 to the outside of the printing apparatus 500.
  • the discharge mechanism 93 is, as shown in FIG. 1 , disposed between the inspection device 92 and an inkjet printing part 700 (disposed on an upstream side of the inkjet printing part 700).
  • a deformed can body 10 is discharged from the printing apparatus 500.
  • compressed air is supplied to the inside of the cylindrically-formed support member 20, to move the can body 10 in the axial direction thereof (in the direction orthogonal to the page of FIG. 1 ).
  • the bottom portion 10A (the closed end portion) of the can body 10 is sucked by a not-shown suction member. Then, by the suction member, the can body 10 is conveyed to the outside of the printing apparatus 500; thereby the can body 10 is discharged to the outside of the printing apparatus 500.
  • the inkjet printing part 700 is provided on a downstream side of the discharge mechanism 93.
  • the inkjet printing part 700 as an example of an image forming unit forms an image on the can body 10 by use of the inkjet printing method, the can body 10 having moved from the upstream side.
  • moving units 550 sequentially move toward the inkjet printing part 700 from an upstream side of the inkjet printing part 700 (refer to the arrow 1A).
  • image formation by the inkjet printing part 700 is performed on the can bodies 10 on the moving units 550.
  • image formation by the inkjet printing method refers to image formation performed by ejecting ink from inkjet heads 11 to attach the ink to the can body 10.
  • a piezo system In the image formation by the inkjet printing method, known methods can be used. Specifically, for example, a piezo system, a thermal (bubble) system, a continuous system or the like can be used.
  • a light irradiation part 750 is provided as an example of a light irradiation unit.
  • the light irradiation part 750 includes a light source and irradiates the outer circumferential surface of the can body 10, on which image formation by the inkjet printing part 700 has been performed, with light, to thereby cure the image formed on the outer circumferential surface.
  • the image is formed by use of ultraviolet cure ink.
  • the image is formed by use of actinic radiation cure ink.
  • the formed image is irradiated with light, such as ultraviolet light. This cures the image formed on the outer circumferential surface of the can body 10.
  • the inkjet printing part 700 and the light irradiation part 750 are disposed on a lateral side of a first linear part 810 (details thereof will be described later).
  • the protection layer forming part 770 is disposed on the downstream side of the inkjet printing part 700 and the light irradiation part 750.
  • the protection layer forming part 770 attaches transparent paint onto an image formed by the inkjet printing part 700 to form a transparent layer covering the image. Consequently, in the exemplary embodiment, a transparent protection layer is formed as the outermost layer of the can body 10.
  • a detachment part 780 detaching the can body 10 from the support member 20 is provided.
  • the can body 10 is detached from the support member 20 in the detachment part 780 to be discharged to the outside of the printing apparatus 500.
  • the printing apparatus 500 is provided with plural moving units 550 as an example of moving bodies that move while supporting the can bodies 10.
  • the support member 20 supporting the can body 10 is attached to the moving unit 550, and the can body 10 moves together with the moving unit 550.
  • FIG. 1 shows the case in which the moving unit 550 supports a single can body 10; however, as described later (as shown in FIG. 4 ), two (plural) can bodies 10 may be placed on the moving unit 550 to thereby cause a single moving unit 550 to support plural can bodies 10.
  • plural inkjet heads 11 are installed at each stop location P for the moving unit 550 as described later (as shown in FIG. 4 ).
  • the support member 20 (refer to FIG. 1 ) is formed cylindrically, and further, provided in a state being rotatable in the circumferential direction.
  • the can body 10 is supported by the support member 20 that is rotatable in the circumferential direction, the can body 10 is also supported in the state being rotatable in the circumferential direction.
  • the can body 10 is formed into a cylindrical shape and an opening portion is provided to one end thereof. Moreover, the other end of the can body 10 is closed and the other end is provided with a bottom portion 10A.
  • the support member 20 is inserted into the can body 10 from the opening portion.
  • a moving mechanism 560 that functions as a mover unit that moves the moving units 550.
  • the moving mechanism 560 is provided with an annular-shaped guidance member 561 that guides the moving units 550.
  • Each of the moving units 550 is guided by the guidance member 561 and orbitally moves along a predetermined annular-shaped movement route 800.
  • the support member 20 provided to the moving unit 550 and the can body 10 supported by the support member 20 also move along the predetermined annular-shaped movement route 800.
  • the movement route 800 is disposed so that the axial center 800C thereof is arranged along the horizontal direction. To put it another way, the movement route 800 is disposed around the axial center 800C along the horizontal direction. Here, the axial center 800C extends in the direction orthogonal to the page in FIG. 1 .
  • the support member 20 and the can body 10 orbitally move around the axial center 800C extending in the direction orthogonal to the page in the figure.
  • the movement route 800 is provided with the first linear part 810, which is a linear movement route, and a second linear part 820, which is similarly a linear movement route.
  • first linear part 810 and the second linear part 820 are disposed to extend along the horizontal direction. Moreover, the first linear part 810 and the second linear part 820 are disposed to be substantially in parallel with each other. Further, in the exemplary embodiment, the first linear part 810 is disposed above the second linear part 820.
  • first linear part 810 is provided to an uppermost portion of the annular-shaped movement route 800
  • second linear part 820 is provided to a lowermost portion of the annular-shaped movement route 800.
  • the inkjet printing part 700 is provided above the first linear part 810 where the uppermost portion is positioned.
  • the movement route 800 is provided with a first curved part 830 and a second curved part 840, each of which is formed into an arc with a curvature.
  • the first curved part 830 connects a right end portion of the first linear part 810 in the figure and a right end portion of the second linear part 820 in the figure.
  • the first curved part 830 is formed to head downward from above.
  • the second curved part 840 connects a left end portion of the first linear part 810 in the figure and a left end portion of the second curved part 820 in the figure.
  • the second curved part 840 is formed to head upward from below.
  • the inkjet printing part 700 is disposed above the first linear part 810 to perform image formation onto the can body 10 positioned at the first linear part 810.
  • the inkjet printing part 700 is provided with plural inkjet heads 11 arranged in line in the left and right directions in the figure.
  • the portion where the plural inkjet heads 11 are provided can be grasped as an image forming unit that performs image formation onto the can body 10.
  • the inkjet printing part 700 is provided with the first inkjet head 11C ejecting the cyan ink, the second inkjet head 11M ejecting the magenta ink, the third inkjet head 11Y ejecting the yellow ink and the fourth inkjet head 11K ejecting the black ink.
  • inkjet heads 11 In the following description, in the case where there are no particular distinctions among the first inkjet head 11C to the fourth inkjet head 11K, the inkjet heads are simply referred to as “inkjet heads 11.”
  • the four inkjet heads 11, namely, the first inkjet head 11C to the fourth inkjet head 11K perform image formation onto the can body 10 by use of the ultraviolet cure ink.
  • the can body 10 is moved in a state of being laid (the can body 10 is moved in the state in which the axial direction of the can body 10 extends along the horizontal state), and a part of the outer circumferential surface of the can body 10 faces upward in the vertical direction.
  • ink is ejected downwardly from above the outer circumferential surface, to thereby perform image formation onto the outer circumferential surface of the can body 10.
  • the moving unit 550 stops below each inkjet head 11, and the ink is ejected onto the can body 10 on the moving unit 550, to thereby perform image formation onto the can body 10.
  • the moving unit 550 moves toward the inkjet head 11 positioned next in the downstream side, and image formation onto the can body 10 is further performed at the inkjet head 11.
  • the four inkjet heads 11 are arranged in line along the moving direction of the can body 10. Moreover, each of the four inkjet heads 11 is disposed along a direction orthogonal to (crossing) the moving direction of the can body 10.
  • ink is ejected to the can body 10 from above, and thereby an image is formed on the can body 10.
  • the moving unit 550 stops at the installation location of each of the plural inkjet heads 11 that have been provided.
  • Each of the moving units 550 moves at a predetermined moving speed.
  • each of the moving units 550 stops at each of the can body supply part 510, the inspection device 92, the discharge mechanism 93, each inkjet head 11, the light irradiation part 750, the protection layer forming part 770 and the detachment part 780.
  • the can body 10 on the moving unit 550 rotates in the circumferential direction at the predetermined rotation speed.
  • the moving units 550 of the number larger than the number of can bodies 10 positioned in the printing apparatus 500 are installed. Further, the moving units 550 move around the axial center 800C.
  • the moving mechanism 560 is provided with an annular-shaped guidance member 561 that guides the moving units 550. Inside the guidance member 561, electromagnets (not shown) are provided.
  • a permanent magnet (not shown) is installed.
  • a linear-motor mechanism is used to move the moving units 550.
  • the printing apparatus 500 of the exemplary embodiment is provided with a control part 900, and the control part 900 controls energization to the above-described electromagnets, to thereby generate magnetic fields and move each of the moving units 550.
  • the control unit 900 is composed of a program-controlled CPU (Central Processing Unit).
  • the moving unit 550 is provided with a pedestal part 551 guided by the guidance member 561.
  • the permanent magnet (not shown) is installed in the pedestal part 551.
  • a propulsive force occurs in the moving unit 550 by magnetic fields generated by electromagnets provided to the guidance member 561 and the permanent magnet provided to the pedestal part 551 of the moving unit 550, and thereby the moving unit 550 moves along the annular-shaped movement route 800.
  • the moving unit 550 of the exemplary embodiment is provided with the cylindrical support member 20 supporting the can body 10 and a fixing member 553 for fixing the support member 20 to the pedestal part 551.
  • the fixing member 553 is provided in the shape of standing from the pedestal part 551.
  • the support member 20 of the exemplary embodiment is formed into the cylindrical shape, and inserted into the can body 10 through the opening portion formed in the can body 10 to support the can body 10.
  • the support member 20 is disposed in the state of being laid (along the horizontal direction). Consequently, in the exemplary embodiment, the can body 10 is also disposed in the state of being laid.
  • the light irradiation part 750 is disposed on the downstream side of the inkjet printing part 700 and irradiates the can body 10 with the ultraviolet light being an example of light. Consequently, the image formed on the outer circumferential surface of the can body 10 (the image formed by the inkjet printing part 700) is cured.
  • thermosetting ink may also be used; in this case, for example, a heat source, not a light source, is installed at the location where the light irradiation part 750 is provided.
  • the moving unit 550 stops every time the moving unit 550 reaches below each of the inkjet heads 11. In other words, the moving unit 550 stops at each of predetermined stop locations.
  • an image is formed by the inkjet heads 11 as an example of the image forming unit.
  • ejection of ink from the inkjet head 11 is performed in the state in which the support member 20 (the can body 10) rotates in the circumferential direction, to thereby form an image onto the outer circumferential surface of the can body 10.
  • the support member 20 shown in FIG. 1 is disposed along the direction orthogonal to the page of FIG. 1 . To put it another way, the support member 20 is disposed to extend along the horizontal direction.
  • the support member 20 is disposed along the direction orthogonal to (crossing) the moving direction of the moving unit 550.
  • the inkjet heads 11 are positioned above the can body 10, and the ink is ejected to the can body 10 from above.
  • the inkjet printing part 700 (the plural inkjet heads 11) is provided on the lateral side of (above) the first linear part 810.
  • the inkjet printing part 700 (the plural inkjet heads 11) is provided on the lateral side of the curved part (the first curved part 830 or the second curved part 840), quality of the image to be formed on the can body 10 is likely to be improved.
  • the attitudes of the inkjet heads 11 are different in each of the inkjet heads 11.
  • the quality of the image to be formed is likely to be degraded due to occurrence of misregistration among images formed by the respective inkjet heads 11.
  • the inkjet printing part 700 is provided on the lateral side of the linear part (the first linear part 810) as in the exemplary embodiment, the attitudes of the plural inkjet heads 11 are easily aligned, and thereby degradation of quality of the image to be formed can be suppressed.
  • FIG. 4 is a diagram showing a case in which the first inkjet head 11C, the second inkjet head 11M, and the moving unit 550 are viewed from the direction of the arrow IV in FIG. 1 .
  • each of the stop locations P is provided with a servomotor M as an example of a driving source to rotate the can body 10.
  • a servomotor M that rotates the can body 10 supported by the moving unit 550 is provided.
  • the driving source (servomotor M) rotating the can body 10 is not provided to the moving unit 550, but is provided to the main body side of the printing apparatus 500 (refer to FIG. 1 ).
  • the driving source for rotating the can body 10 is not provided to the moving unit 550, but is provided to a different location from the moving unit 550.
  • the moving unit 550 can be made light, and therefore, vibrations of the printing apparatus 500 caused by movement of the moving units 500 are reduced.
  • the moving unit 550 is provided with the driving source and thereby the moving unit 550 has a large weight, vibrations of the printing apparatus 500 when the moving units 550 are stopped are likely to be increased. Then, in this case, the inkjet heads 11 and the like vibrate, to thereby lead to degradation of image quality.
  • the moving unit 550 in the configuration in which the driving source is provided to the main body side of the printing apparatus 500, the moving unit 550 is made lighter in weight, and thereby vibrations of the printing apparatus 500 when the moving units 550 are stopped are reduced.
  • the moving unit 550 is provided with the pedestal part 551.
  • the pedestal part 551 two can bodies 10 are provided.
  • the support member 20 is inserted into each of the can bodies 10, and thereby the can body 10 is supported by the support member 20.
  • the moving unit 550 is provided with a transmission shaft 555 for transmitting a rotational driving force to the can body 10; in the exemplary embodiment, the rotational driving force from the servomotor M is transmitted to the can body 10 via the transmission shaft 555.
  • the exemplary embodiment is provided with rotation gears 556 that are in contact with the respective support members 20 to rotate thereof; the rotation gears 556 are rotated by the transmission shafts 555, to thereby rotate the can bodies 10 in the circumferential direction.
  • the two can bodies 10 provided to each moving unit 550 are rotated in the same direction.
  • phase detection mechanism 570 as an example of a detection unit that detects a phase of the can body 10.
  • the phase detection mechanism 570 is provided with an encoder 571.
  • the encoder 571 is a publicly known encoder 571 and is provided with a rotation body 571A rotating in synchronization with the can body 10.
  • a slit (not shown) extending in the radial direction of the rotation body 571A is formed.
  • the encoder 571 is provided with a light source emitting light to the rotation body 571A and a light receiving part receiving light passed through the slit.
  • the phase (the rotation angle) of the rotation body 571A is detected, and thereby the phase (the rotation angle) of the can body 10 is detected.
  • the rotation body 571A is disposed to position the rotation center 571B of the rotation body 571A at a location deviated from the transmission shaft 555.
  • the size of the moving unit 550 in the direction indicated by the reference sign 4A is likely to be increased.
  • phase detection mechanism 570 is provided with a transmission mechanism 572 transmitting the rotational driving force from the transmission shaft 555 to the encoder 571.
  • the transmission mechanism 572 is provided with: a first rotation body 572A formed into a columnar shape and disposed coaxially with the transmission shaft 555; a circulating belt 572B orbitally moving upon receiving the driving force from the first rotation body 572A; and a second rotation body 572C disposed coaxially with the rotation body 571A and rotating upon receiving the driving force from the circulating belt 572B.
  • the rotational driving force is transmitted from the transmission shaft 555 to the encoder 571 by the transmission mechanism 572, and thereby the rotation body 571A is rotated.
  • the exemplary embodiment includes a configuration in which each of the moving units 550 is provided with plural can bodies 10, and the phase of each of the plural can bodies 10 is detected by the common phase detection mechanism 570.
  • phase detection mechanism 570 is not provided to every can body 10, but the single phase detection mechanism 570 is provided for two can bodies 10.
  • transmission of the driving force from the servomotor M, which is the driving source, to the moving unit 550 is carried out by so-called magnet coupling.
  • a driving-source-side rotation body 581 rotated by the servomotor M is provided on the servomotor M side (on the main body side of the printing apparatus 500).
  • a moving-body-side rotation body 582 disposed coaxially with the transmission shaft 555 is provided on the moving unit 550 side.
  • the driving force is transmitted from the driving-source-side rotation body 581 to the moving-body-side rotation body 582, and thereby the can body 10 is rotated.
  • use of the magnetic force rotates the moving-body-side rotation body 582 in synchronization with the driving-source-side rotation body 581, to thereby transmit the driving force from the driving-source-side rotation body 581 to the moving-body-side rotation body 582.
  • a magnet is provided to at least one of the driving-source-side rotation body 581 and the moving-body-side rotation body 582, and an attracted body to be attracted by the magnet is provided to the other one.
  • the magnetic force generated in the magnet is used to rotate the moving-body-side rotation body 582 in synchronization with the driving-source-side rotation body 581.
  • the transmission shaft 555 is rotated in response to the rotation of the moving-body-side rotation body 582, and, in accordance with this, the can body 10 is rotated in the circumferential direction.
  • the driving-source-side rotation body 581 and the moving-body-side rotation body 582 are disposed to face each other.
  • the driving-source-side rotation body 581 and the moving-body-side rotation body 582 are disposed in the non-contact state at this time.
  • a transmission part 300 for transmitting the phase detection result by the phase detection mechanism 570 to the control part 900 (refer to FIG. 1 ) is provided.
  • the transmission part 300 is disposed along the moving route R of the moving unit 550.
  • the transmission part 300 is composed of so-called signal rails.
  • part of the moving unit 550 is in contact with the transmission part 300, and thereby the detection result by the phase detection mechanism 570 provided to the moving unit 550 is forwarded to the control part 900 (refer to FIG. 1 ) via the transmission part 300.
  • a signal brush 558 to be brought into contact with the transmission part 300 is provided to a lower portion of the pedestal part 551 of the moving unit 550, and the detection result by the phase detection mechanism 570 is forwarded to the control part 900 via the signal brush 558 and the transmission part 300 (the signal rail).
  • control part 900 Upon receiving the detection result, the control part 900 controls image formation by use of the inkjet printing part 700.
  • FIG. 5 is a diagram showing a case in which the moving unit 550 is viewed from the direction of the arrow V in FIG. 4 .
  • plural (plural pairs of) transmission parts 300 are provided. Specifically, four transmission parts 300, namely, a first transmission part 310 to a fourth transmission part 340 are provided.
  • the four transmission parts 300 are disposed in line in a direction crossing the direction in which the moving route R (also refer to FIG. 4 ) of the moving unit 550 extends.
  • Each of the four transmission parts 300 is provided with plural signal rails SR.
  • a part of the signal rails SR of the plural signal rails SR supplies electric power to the encoder 571 (refer to FIG. 4 ).
  • the other part of the signal rails SR forwards the detection result by the phase detection mechanism 570 to the control part 900.
  • the signal brush 558 (refer to the reference sign 5E) provided to the moving unit 550 stopping at the installation location of the first inkjet head 11C is in contact with the first transmission part 310 among the four transmission parts 300.
  • a signal brush 558 provided to a moving unit 550 (the moving unit 550 indicated by the reference sign 1D in FIG. 1 ) immediately following the moving unit 550 (hereinafter, referred to as the "preceding moving unit 550") is also shown together (refer to the reference sign 5F); when arriving at the installation location of the first inkjet head 11C, the signal brush 558 is brought into contact with the second transmission part 320.
  • FIG. 5 also shows a signal brush 558 (refer to the reference sign 5G) provided to a moving unit 550 (the moving unit 550 indicated by the reference sign 1E in FIG. 1 ) following second after the preceding moving unit 550, and the signal brush 558 is brought into contact with the third transmission part 330.
  • a signal brush 558 (refer to the reference sign 5G) provided to a moving unit 550 (the moving unit 550 indicated by the reference sign 1E in FIG. 1 ) following second after the preceding moving unit 550, and the signal brush 558 is brought into contact with the third transmission part 330.
  • FIG. 5 also shows a signal brush 558 (refer to the reference sign 5H) provided to a moving unit 550 (the moving unit 550 indicated by the reference sign 1F in FIG. 1 ) following third after the preceding moving unit 550, and the signal brush 558 is brought into contact with the fourth transmission part 340.
  • a signal brush 558 (refer to the reference sign 5H) provided to a moving unit 550 (the moving unit 550 indicated by the reference sign 1F in FIG. 1 ) following third after the preceding moving unit 550, and the signal brush 558 is brought into contact with the fourth transmission part 340.
  • the transmission part 300 to be in contact with the signal brush 558 included in each moving unit 550 is provided for each moving unit 550.
  • the installation positions of the signal brushes 558 included in the respective plural moving units 550 are different among the moving units 550. Consequently, the transmission part 300 with which the signal brush 558 included by each moving unit 550 is in contact is different per each moving unit 550.
  • the installation positions of the signal brushes 558 included in the respective moving units 550 are different from one another.
  • the installation positions of the first transmission part 310 to the fourth transmission part 340 are different from one another in the direction crossing the moving direction of the moving unit 550.
  • the transmission part 300 to be in contact with the signal brush 558 included in each of the moving units 550 is different per each moving unit 550.
  • the four kinds of moving units 550 with the installation positions of the signal brushes 558 different from one another move on the moving route R in the order from the first kind to the fourth kind. Consequently, in the exemplary embodiment, at the installation location of the inkjet printing part 700, the transmission part 300 to be in contact with the signal brush 558 included in each of the moving units 550 is different per each moving unit 550.
  • different transmission parts 300 are provided to the respective moving units 550, to thereby enable the control part 900 to detect the phase of the can body 10 in each of the moving units 550.
  • each of the stop locations P (the main body side of the printing apparatus 500) for the moving units 550 is provided with a suction mechanism 980 sucking the can body 10.
  • the suction mechanism 980 is provided with a contacted part 981 with which the moving unit 550 is to be brought into contact and a suction tube 982 connected to the contacted part 981.
  • the moving unit 550 is provided with a contact part 591 coming into contact with the contacted part 981 and a connection tube 592 connecting the contact part 591 and the support member 20.
  • the contact part 591 comes into contact with the contacted part 981, and the suction tube 982 and the connection tube 592 are connected. Consequently, the can body 10 is sucked and the can body 10 is biased toward the root side of the support member 20.
  • positioning of the can body 10 in the axial direction thereof is performed by the biasing.
  • the control part 900 detects the phase of the can body 10 positioned below the first inkjet head 11C based on the detection result forwarded via the transmission part 300.
  • control part 900 detects the phase of the can body 10 on the moving unit 550 stopping below the first inkjet head 11C.
  • control part 900 detects the phase of the can body 10 when starting ink ejection onto the can body 10 positioned below the first inkjet head 11C.
  • the control part 900 retains the detected phase.
  • the retained phase is referred to as a "retained phase.”
  • the moving unit 550 moves to the second inkjet head 11M, and ink ejection by the second inkjet head 11M is started.
  • the control part 900 controls the ink ejection at the second inkjet head 11M to start ink ejection when the phase of the can body 10 has shifted to the retained phase.
  • the control part 900 Based on the detection result forwarded via the transmission part 300, the control part 900 has grasped the phase of the can body 10 positioned directly below the second inkjet head 11M; accordingly, the control part 900 controls the ink ejection at the second inkjet head 11M to start ink ejection when the phase has shifted to the retained phase.
  • control part 900 controls the ink ejection at the second inkjet head 11M to align the image formation starting position by the first inkjet head 11C and the image formation starting position by the second inkjet head 11M.
  • the can body 10 when the ink ejection by the second inkjet head 11M is started, the can body 10 is in the state of rotating in the circumferential direction.
  • the control part 900 controls the second inkjet head 11M to start the ink ejection from the second inkjet head 11M when the image formation starting position by the first inkjet head 11C reaches directly below the second inkjet head 11M.
  • the moving unit 550 moves to the third inkjet head 11Y and the fourth inkjet head 11K; then, the processes similar to the above are also performed.
  • control part 900 controls the ink ejection at the third inkjet head 11Y to align the image formation starting position by the first inkjet head 11C and the image formation starting position by the third inkjet head 11Y.
  • control part 900 controls the ink ejection at the fourth inkjet head 11K to align the image formation starting position by the first inkjet head 11C and the image formation starting position by the fourth inkjet head 11K.
  • the above-described image formation starting position is always located directly below each inkjet head 11. In this case, image formation onto the can body 10 can be performed without detecting the phase of the can body 10.
  • the can body 10 rotates from completion of image formation in the inkjet head 11 until arrival of the can body 10 at the next inkjet head 11; in this case, misregistration among the images formed by the respective colors is likely to occur.
  • occurrence of the misregistration can be suppressed by controlling the ink ejection in each inkjet head 11 based on the detection result of the phase of the can body 10 as in the exemplary embodiment.
  • the mechanism for detecting the phase of the can body 10 to, for example, each of the installation positions of the inkjet heads 11, not the moving unit 550, to thereby detect the phase of the can body 10 every time the moving unit 550 reaches the installation position.
  • the moving unit 550 is moved by using a so-called linear motor mechanism, but movement of the moving unit 550 is not limited to the linear motor mechanism; for example, the movement may be performed by attaching the moving unit 550 to an endless member (a member such as a belt or a chain) and orbitally moving the endless member.
  • an endless member a member such as a belt or a chain
  • a driving source such as a motor
  • a driving source for moving the moving unit 550 to each of the moving units 550, to thereby move the moving unit 550 autonomously.
  • the driving sources are provided to other locations, such as the inspection device 92 (refer to FIG. 1 ), the light irradiation part 750 and the protection layer forming part 770.
  • the can body 10 is rotated by the driving source provided separately from the moving unit 550.
  • the detection result from the moving unit 550 was outputted by use of the transmission part 300 coming into contact with the moving unit 550; however, the output of the detection result from the moving unit 550 (the detection result by the phase detection mechanism 570) is not limited to the contact system, and the detection result may be outputted by a non-contact system, such as outputting by use of wireless communication.
  • the transmission part 300 for transmitting the signal output from the moving unit 550 to the control part 900 may be provided above the moving unit 550.
  • a terminal for reading the detection result by the phase detection mechanism 570 may be provided to the installation location of each inkjet head 11 to read the detection result every time the moving unit 550 reaches each of the inkjet heads 11.
  • phase of the can body 10 was detected by using the encoder 571, but the phase detection of the can body 10 may be carried out by using other mechanisms.
  • an imaging unit such as a CCD (Charge Coupled Device) may be provided to the moving unit 550, and the imaging result by the imaging unit can be analyzed to detect the phase of the can body 10.
  • CCD Charge Coupled Device

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Controlling Sheets Or Webs (AREA)
EP19858730.5A 2018-09-12 2019-06-26 Dispositif d'impression Pending EP3851288A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018170658A JP7166114B2 (ja) 2018-09-12 2018-09-12 印刷装置
PCT/JP2019/025374 WO2020054178A1 (fr) 2018-09-12 2019-06-26 Dispositif d'impression

Publications (2)

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EP3851288A1 true EP3851288A1 (fr) 2021-07-21
EP3851288A4 EP3851288A4 (fr) 2021-09-29

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EP (1) EP3851288A4 (fr)
JP (1) JP7166114B2 (fr)
CN (1) CN112384372B (fr)
WO (1) WO2020054178A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP4904173B2 (ja) 2007-01-31 2012-03-28 昭和アルミニウム缶株式会社 複数品種の缶体の製造方法および缶体の分別装置
US20090255423A1 (en) * 2008-04-09 2009-10-15 Jose Valls Printing Device For Printing Cylindrical or Spherical Objects
DE102009014663B4 (de) * 2009-03-27 2013-03-14 Khs Gmbh Vorrichtung und Verfahren zur Erfassung der Drehposition zumindest einer zur Aufnahme eines Behälters vorgesehenen Drehvorrichtung
FR2985683B1 (fr) * 2012-01-16 2014-02-28 Jean Luc Perret Machine d'impression sur articles en trois dimensions et procede d'impression
JP5978957B2 (ja) * 2012-11-28 2016-08-24 セイコーエプソン株式会社 液体吐出装置、及び、被印刷物支持体
JP6200741B2 (ja) * 2013-09-24 2017-09-20 アイマー・プランニング株式会社 缶検査装置
JP6393548B2 (ja) * 2014-07-31 2018-09-19 アイマー・プランニング株式会社 缶印刷装置
JP6482315B2 (ja) * 2015-02-20 2019-03-13 昭和アルミニウム缶株式会社 印刷装置および缶体の製造方法
JP6568692B2 (ja) * 2015-03-04 2019-08-28 昭和アルミニウム缶株式会社 印刷装置
JP6131297B2 (ja) * 2015-07-16 2017-05-17 昭和アルミニウム缶株式会社 画像形成装置
WO2017187863A1 (fr) * 2016-04-28 2017-11-02 昭和アルミニウム缶株式会社 Dispositif d'impression
JP6202159B2 (ja) * 2016-07-25 2017-09-27 セイコーエプソン株式会社 液体吐出装置

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JP2020040718A (ja) 2020-03-19
CN112384372A (zh) 2021-02-19
JP7166114B2 (ja) 2022-11-07
WO2020054178A1 (fr) 2020-03-19
CN112384372B (zh) 2022-09-13
EP3851288A4 (fr) 2021-09-29

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