WO2022210211A1 - 液体吐出装置および液体吐出装置の組み立て方法 - Google Patents

液体吐出装置および液体吐出装置の組み立て方法 Download PDF

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Publication number
WO2022210211A1
WO2022210211A1 PCT/JP2022/013711 JP2022013711W WO2022210211A1 WO 2022210211 A1 WO2022210211 A1 WO 2022210211A1 JP 2022013711 W JP2022013711 W JP 2022013711W WO 2022210211 A1 WO2022210211 A1 WO 2022210211A1
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WO
WIPO (PCT)
Prior art keywords
head
fixing member
cap
liquid ejection
ejection device
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.)
Ceased
Application number
PCT/JP2022/013711
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English (en)
French (fr)
Japanese (ja)
Inventor
伸明 山口
兼好 槐島
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.)
Kyocera Corp
Original Assignee
Kyocera 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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP2023511088A priority Critical patent/JP7447355B2/ja
Priority to CN202280025199.6A priority patent/CN117083180A/zh
Priority to EP22780425.9A priority patent/EP4316851A4/en
Priority to US18/552,900 priority patent/US20240190150A1/en
Publication of WO2022210211A1 publication Critical patent/WO2022210211A1/ja
Anticipated expiration legal-status Critical
Priority to JP2024028116A priority patent/JP7670890B2/ja
Priority to JP2025068007A priority patent/JP2025096610A/ja
Ceased 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/34—Bodily-changeable print heads or carriages
    • 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
    • B41J2/135—Nozzles
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/1433—Structure of nozzle plates
    • 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
    • B41J2/135—Nozzles
    • B41J2/16—Production of nozzles
    • B41J2/1606—Coating the nozzle area or the ink chamber
    • 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
    • B41J2/135—Nozzles
    • B41J2/16—Production of nozzles
    • B41J2/1621—Manufacturing processes
    • B41J2/1623—Manufacturing processes bonding and adhesion
    • 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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
    • B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
    • 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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16523—Waste ink transport from caps or spittoons, e.g. by suction
    • 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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • 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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • B41J2/16544—Constructions for the positioning of wipers
    • B41J2/16547—Constructions for the positioning of wipers the wipers and caps or spittoons being on the same movable support
    • 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
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16585—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles for paper-width or non-reciprocating print heads
    • 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
    • B41J11/0015—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 for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • 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
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B41J15/06—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles characterised by being applied to printers having stationary carriages
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/21—Line printing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49401—Fluid pattern dispersing device making, e.g., ink jet

Definitions

  • the disclosed embodiments relate to a liquid ejection device and a method for assembling the liquid ejection device.
  • liquid ejection devices Inkjet printers and inkjet plotters using an inkjet recording method are known as liquid ejection devices.
  • a liquid ejection head for ejecting liquid is mounted in such an inkjet type liquid ejection apparatus.
  • a liquid ejection device includes a head, a holding section, a cap, and a second fixing member.
  • the head has a first surface that ejects liquid.
  • the holding section holds the head.
  • a cap is secured to the head using a removable first securing member and covers the first surface.
  • a second fixing member fixes the head and the holding portion.
  • FIG. 1 is an explanatory diagram (Part 1) of the liquid ejection device according to the embodiment.
  • FIG. 2 is an explanatory diagram (part 2) of the liquid ejection device according to the embodiment.
  • FIG. 3A is a perspective view showing the configuration of the main part of the liquid ejection device according to the first embodiment;
  • FIG. 3B is a perspective view of the liquid ejection device shown in FIG. 3A viewed from another direction.
  • FIG. 4 is a perspective view showing a state in which the cap is removed from the liquid ejection device according to the first embodiment.
  • FIG. 5 is a perspective view showing a state in which the cap is removed from the liquid ejection device according to Modification 1 of the first embodiment.
  • FIG. 1 is an explanatory diagram (Part 1) of the liquid ejection device according to the embodiment.
  • FIG. 2 is an explanatory diagram (part 2) of the liquid ejection device according to the embodiment.
  • FIG. 3A is a perspective view showing the configuration of the main part of the liquid
  • FIG. 6 is a perspective view showing an example of a liquid ejection device according to Modification 2 of the first embodiment.
  • 7 is a perspective view showing a state in which the cap is removed from the liquid ejection device shown in FIG. 6.
  • FIG. FIG. 8 is a plan view showing the vicinity of the second fixing member.
  • FIG. 9 is a cross-sectional view showing the vicinity of the second fixing member.
  • FIG. 10 is a cross-sectional view showing the vicinity of the first fixing member.
  • FIG. 11 is a diagram showing the configuration of the essential parts of the liquid ejecting apparatus according to the second embodiment.
  • FIG. 12 is a diagram showing the configuration of a main part of a liquid ejection device according to a modification of the second embodiment.
  • 13A and 13B are diagrams illustrating an example of a method for assembling the liquid ejection device according to the first embodiment.
  • 14A and 14B are diagrams showing an example of a method for assembling the liquid ejection device according to the modification of the first embodiment.
  • FIG. 1 and 2 are explanatory diagrams of the printer according to the embodiment. Specifically, FIG. 1 is a schematic side view of the printer, and FIG. 2 is a schematic plan view of the printer.
  • a printer according to an embodiment is, for example, a color inkjet printer.
  • the liquid ejection device 1 includes a paper feed roller 2, a guide roller 3, a coating machine 4, a head case 5, a plurality of transport rollers 6, a plurality of frames 7, and a plurality of heads. 8 , a conveying roller 9 , a dryer 10 , a conveying roller 11 , a sensor section 12 , and a collection roller 13 .
  • the transport roller 6 is an example of a transport section.
  • the liquid ejection device 1 includes a paper feed roller 2, a guide roller 3, a coating machine 4, a head case 5, a plurality of transport rollers 6, a plurality of frames 7, a plurality of heads 8, a transport roller 9, a dryer 10, a transport A control unit 14 that controls the roller 11 , the sensor unit 12 and the collecting roller 13 is provided.
  • the liquid ejection device 1 records images and characters on the printing paper P by causing droplets to land on the printing paper P.
  • the printing paper P is an example of a recording medium.
  • the printing paper P is wound around the paper feed roller 2 before use. Then, the liquid ejection device 1 conveys the printing paper P from the paper feed roller 2 to the inside of the head case 5 via the guide rollers 3 and the applicator 4 .
  • the coating machine 4 evenly coats the printing paper P with the coating agent. As a result, since the printing paper P can be surface-treated, the printing quality of the liquid ejection device 1 can be improved.
  • the head case 5 accommodates a plurality of transport rollers 6, a plurality of frames 7, and a plurality of heads 8. Inside the head case 5, a space is formed that is isolated from the outside, except for a part that is connected to the outside, such as a portion where the printing paper P enters and exits.
  • At least one of the control factors such as temperature, humidity, and air pressure in the internal space of the head case 5 is controlled by the control unit 14 as necessary.
  • the transport roller 6 transports the printing paper P to the vicinity of the head 8 inside the head case 5 .
  • the frame 7 is a rectangular flat plate, and is positioned above and close to the printing paper P transported by the transport rollers 6 . Further, as shown in FIG. 2, the frame 7 is positioned so that its longitudinal direction is perpendicular to the direction in which the printing paper P is conveyed. A plurality of (for example, four) frames 7 are positioned along the transport direction of the printing paper P inside the head case 5 .
  • the head 8 is a liquid ejection head that ejects liquid supplied from a liquid tank.
  • the control unit 14 controls the head 8 based on data such as images and characters to eject liquid toward the printing paper P.
  • the distance between the head 8 and the printing paper P is, for example, approximately 0.5 to 20 mm.
  • the head 8 is fixed to the frame 7.
  • the head 8 is positioned so that its longitudinal direction is perpendicular to the direction in which the printing paper P is conveyed.
  • the liquid ejection device 1 according to the embodiment is a so-called line printer in which the head 8 is fixed inside the liquid ejection device 1 .
  • the liquid ejection apparatus 1 according to the embodiment is not limited to a line printer, and may be a so-called serial printer.
  • a serial printer alternately performs an operation of recording while moving the head 8 back and forth in a direction intersecting the conveying direction of the printing paper P, for example, in a direction substantially orthogonal to the conveying direction, and conveying the printing paper P. It is a method printer.
  • FIG. 2 shows an example in which three heads 8 are positioned forward and two rearward in the transport direction of the printing paper P, and the centers of the respective heads 8 do not overlap in the transport direction of the printing paper P.
  • the head 8 is positioned as follows.
  • a plurality of heads 8 positioned on one frame 7 constitute a head group 8A.
  • the four head groups 8A are positioned along the direction in which the printing paper P is transported.
  • the same color ink is supplied to the heads 8 belonging to the same head group 8A.
  • the liquid ejection device 1 can perform printing with four color inks using the four head groups 8A.
  • the colors of ink ejected from each head group 8A are, for example, magenta (M), yellow (Y), cyan (C) and black (K).
  • the control unit 14 can print a color image on the printing paper P by controlling each head group 8A to eject a plurality of colors of ink onto the printing paper P.
  • a coating agent may be ejected from the head 8 onto the printing paper P in order to treat the surface of the printing paper P.
  • the number of heads 8 included in one head group 8A and the number of head groups 8A mounted on the liquid ejection device 1 can be appropriately changed according to the target to be printed and printing conditions. For example, if the color printed on the printing paper P is a single color and a printable range is printed with one head 8, the number of heads 8 mounted in the liquid ejection device 1 may be one.
  • the print paper P printed inside the head case 5 is transported outside the head case 5 by transport rollers 9 and passes through the inside of the dryer 10 .
  • the dryer 10 dries the printing paper P that has been printed.
  • the printing paper P dried by the dryer 10 is conveyed by the conveying roller 11 and collected by the collecting roller 13 .
  • the liquid ejecting apparatus 1 by drying the printing paper P with the dryer 10, it is possible to suppress adhesion of the printing papers P that are wound together in the collection roller 13 and prevent undried liquid from rubbing against each other. be able to.
  • the sensor unit 12 is composed of a position sensor, a speed sensor, a temperature sensor, and the like.
  • the control section 14 can determine the state of each section of the liquid ejection device 1 based on the information from the sensor section 12 and control each section of the liquid ejection device 1 .
  • the printing paper P is used as the printing target (that is, the recording medium), but the printing target in the liquid ejection device 1 is not limited to the printing paper P. etc. may be printed.
  • the liquid ejection device 1 may transport the printing paper P by placing it on a transport belt. By using the transport belt, the liquid ejecting apparatus 1 can print on sheet paper, cut cloth, wood, tiles, and the like.
  • the liquid ejecting apparatus 1 may print a wiring pattern of an electronic device by ejecting liquid containing conductive particles from the head 8 . Further, the liquid ejecting apparatus 1 may eject a predetermined amount of liquid chemical agent or liquid containing the chemical agent from the head 8 toward a reaction vessel or the like to produce a chemical agent.
  • the liquid ejection device 1 may include a cleaning section that cleans the head 8 .
  • the cleaning section cleans the head 8 by, for example, a wiping process or a capping process.
  • the wiping process is, for example, a process of removing the liquid adhering to the head 8 by wiping the surface of the portion where the liquid is to be discharged with a flexible wiper.
  • the capping process is performed, for example, as follows. First, a cap is put so as to cover a portion where the liquid is to be ejected, for example, the first surface 23a (see FIG. 3B) of the nozzle plate 23 where the ejection holes are located (this is called capping). Thereby, a substantially closed space is formed between the first surface 23a and the cap. Next, liquid ejection is repeated in such a closed space. As a result, it is possible to remove the liquid, the foreign matter, etc., which are clogged in the ejection holes of the first surface 23a and have a viscosity higher than that in the standard state.
  • the liquid ejecting apparatus 1 is not limited to an apparatus for transporting a print target (recording medium) as described above, but a coating machine (liquid ejecting apparatus) that moves while the print target is fixed. It's okay.
  • a liquid ejection device 1 may be, for example, a device having a robot arm.
  • FIG. 3A is a perspective view showing the configuration of the main part of the liquid ejection device according to the first embodiment
  • FIG. 3B is a perspective view of the liquid ejection device shown in FIG. 3A viewed from another direction.
  • the liquid ejection device 1 has a head 8 , a first fixing member 31 , a second fixing member 32 , a frame 40 and a cap 50 .
  • the head 8 has a first surface 23a for ejecting liquid.
  • a cap 50 is attached to the head 8 using a first fixing member 31 .
  • the head 8 is fixed to the frame 40 using the second fixing member 32 .
  • the material of the frame 40 is, for example, stainless steel or aluminum.
  • the frame 40 is a holding portion that holds the head 8 .
  • the frame 40 may be a part of the frame 7 shown in FIGS. 1 and 2 or a member fixed to the frame 7 .
  • the cap 50 is fixed to the head 8 using the first fixing member 31.
  • the cap 50 protects the first surface 23a.
  • the first surface 23a is an ejection surface having ejection holes through which liquid is ejected.
  • the material of cap 50 may be, for example, metal or resin. If metallic, the material of cap 50 may be, for example, stainless steel or aluminum.
  • the material of the cap 50 may be, for example, a thermoplastic resin or a thermosetting resin that is resistant to the liquid discharged from the first surface 23a.
  • the first fixing member 31 and the second fixing member 32 are screw members, for example.
  • the first fixing member 31 and the second fixing member 32 shown in FIG. 3 are provided toward the same side along the thickness direction of the head 8 .
  • the first fixing member 31 is provided from the frame 40 toward the cap 50 side (from above to below), and the second fixing member 32 is also provided. It is provided in the same direction from the head 8 toward the frame 40 side (from above to below).
  • the first fixing member 31 and the second fixing member 32 are attached in the direction of gravity, which facilitates the assembly of the liquid ejection device 1 and improves workability during assembly. can.
  • the first fixing member 31 is detachably provided. Therefore, the cap 50 can be removed from the head 8 by removing the first fixing member 31 .
  • FIG. 4 is a perspective view showing a state in which the cap is removed from the liquid ejection device according to the first embodiment.
  • the first fixing member 31 is detachably provided in a hole 21 passing through the head 8 and a hole 51 provided in the cap 50 .
  • the first fixing member 31 can be removed away from the cap 50 .
  • the cap 50 can be removed while the head 8 is fixed to the frame 40 in the liquid ejection apparatus 1 . Therefore, workability can be improved, and reliability in assembly can be improved by protecting the first surface 23a with the cap 50 until use.
  • FIG. 5 is a perspective view showing a state in which the cap is removed from the liquid ejection device according to Modification 1 of the first embodiment.
  • the first fixing member 31 and the second fixing member 32 are provided along the thickness direction of the head 8 toward opposite sides.
  • the first fixing member 31 is detachably provided in a hole 21 provided in the head 8 and a hole 51 passing through the cap 50 .
  • the liquid ejecting apparatus 1 can remove the cap 50 from the head 8 while the head 8 is fixed to the frame 40 .
  • the first fixing member 31 is provided from the frame 40 toward the cap 50 side (from above to below), and the second fixing member 32 is provided It is provided from the head 8 toward the frame 40 side (from the bottom to the top) in the opposite direction to the first fixing member 31 .
  • the first fixing member 31 and the second fixing member 32 can be inserted from an object with a large mass to an object with a small mass, and workability can be improved. Reliability in assembly can be improved by protecting the first surface 23a.
  • the first fixing member 31 can be removed in the same direction as the cap 50, which is the direction away from the first surface 23a. Therefore, since it is not necessary to secure a path for removing the first fixing member 31 separately from the path for removing the cap 50, for example, the degree of freedom in design increases.
  • FIG. 6 is a perspective view showing an example of a liquid ejection device according to modification 2 of the first embodiment.
  • 7 is a perspective view showing a state in which the cap is removed from the liquid ejection device shown in FIG. 6.
  • the liquid ejection device 1 has a housing 40A instead of the frame 40.
  • the housing 40A is a holding section that holds the head 8 .
  • the housing 40A has a space in which a part of the head 8 is accommodated.
  • the housing 40A may be, for example, a structure that isolates the internal space from the external space.
  • Such a liquid ejecting apparatus 1 is applied to, for example, a coating application that ejects a volatile liquid.
  • the housing 40A has a hole 42 for fixing the head 8 using the second fixing member 32.
  • the cap 50 has a through portion 52 at a position corresponding to the hole 42 .
  • the through portion 52 is a through hole penetrating the cap 50 in the thickness direction of the head 8 .
  • the penetrating portion 52 is used not for fixing the cap 50 but for inserting the second fixing member 32 to fix the head 8 to the housing 40A.
  • the penetrating portion 52 may be, for example, positioned at the end of the cap 50 and may have a shape that penetrates the cap 50 in the thickness direction of the head 8, that is, a notch.
  • FIG. 7 is a perspective view showing a state in which the cap is removed from the liquid ejection device shown in FIG.
  • the cap 50 can be removed from the head 8 by removing the first fixing member 31 located outside the first surface 23a in the longitudinal direction.
  • the head 8 has a through portion 26 positioned outside in the lateral direction of the first surface 23a. The through portion 26 is used to fix the head 8 to the housing 40A using the second fixing member 32. As shown in FIG.
  • FIG. 8 is a plan view showing the vicinity of the second fixing member.
  • FIG. 9 is a cross-sectional view showing the vicinity of the second fixing member. 8, illustration of the cap 50 is omitted.
  • the head 8 includes a nozzle plate 23, a channel member 24, and a base plate 25, as shown in FIG.
  • the nozzle plate 23 has a first surface 23a for ejecting liquid and a second surface 23b facing the first surface 23a.
  • the flow path member 24 is positioned on the second surface 23b and has a plurality of reservoir plates stacked in the thickness direction of the head 8 .
  • the base plate 25 is located on the opposite side of the nozzle plate 23 with the channel member 24 interposed therebetween.
  • the base plate 25 is a member that is thicker than each reservoir plate of the flow path member 24 .
  • the base plate 25 may be a highly rigid and strong metal cut part or resin molded product.
  • the flow path member 24 has a through portion 26 that penetrates in the thickness direction. As shown in FIG. 8 , the through portion 26 has a notch shape facing the end surface 27 of the flow path member 24 .
  • the penetrating portion 26 is located away from a second fixing member 32 indicated by a dashed line, and the second fixing member 32 fastens the base plate 25 and the housing 40A to fix the head 8 to the housing 40A. do.
  • the penetrating portion 26 being positioned apart from the second fixing member 32 means that the inner wall of the penetrating portion 26 is not in contact with the second fixing member 32 .
  • the flow path member 24 is not subjected to shear stress accompanying the mounting of the second fixing member 32. Since each reservoir plate that constitutes the flow path member 24 is thinner than the base plate 25 , if it receives stress due to the fastening of the second fixing member 32 , there is a possibility that the ejection performance will be impaired due to deformation, for example.
  • the base plate 25 receives the shear stress accompanying the mounting of the second fixing member 32 . Since the base plate 25 is thicker than each reservoir plate of the channel member 24, it is less likely to deform when the second fixing member 32 is attached.
  • the durability of the head 8 is enhanced, for example. It should be noted that the size of the head 8 does not have to be larger than necessary, and the size of the head 8 can be reduced.
  • FIG. 10 is a cross-sectional view showing the vicinity of the first fixing member.
  • the cap 50 has a hole 51.
  • the base plate 25 has holes 21 at positions corresponding to the holes 51 .
  • the first fixing member 31 removably fixes the base plate 25 and the cap 50 by being positioned inside the holes 21 and 51, for example.
  • FIG. 10 shows an example in which the first fixing member 31 is provided from the base plate 25 side, it may be provided from the cap 50 side by changing the shape of the holes 21 and 51 .
  • FIG. 11 is a diagram showing the configuration of the essential parts of the liquid ejecting apparatus according to the second embodiment.
  • a holding part 101 is positioned at the tip of the robot arm 100 .
  • the robot arm 100 is positioned so that the holding portion 101 faces downward, and the head 8 held by this holding portion 101 is moved upward from the lower side of the head 8 by moving the second fixing member 32 upward. It may be fixed to the holding portion 101 by using. By positioning the robot arm 100 and fixing the head 8 in this way, the first surface 23a of the head 8 is protected by the cap 50 until use, even in the liquid ejecting apparatus 1A equipped with the robot arm 100. Reliability can be improved.
  • FIG. 12 is a diagram showing the configuration of the essential parts of a liquid ejection device according to a modification of the second embodiment.
  • the controller 140 positions the robot arm 100 so that the holder 101 faces upward, and moves the head 8 held by the holder 101 downward from the upper side of the head 8. You may fix to the holding
  • the robot arm 100 and fixing the head 8 By positioning the robot arm 100 and fixing the head 8 in this way, for example, the load associated with the mass of the head 8 and the second fixing member 32 can be easily transmitted to the holding portion 101, thereby improving workability, for example.
  • FIGS. 13A and 13B are diagrams illustrating an example of a method for assembling the liquid ejection device according to the first embodiment.
  • the cap 50 covering the first surface 23a of the head 8 is attached (step S11).
  • the first fixing member 31 is provided along the thickness direction of the head 8 .
  • the first fixing member 31 may be provided downward from above the head 8 as illustrated, or may be provided upward from below the cap 50 .
  • the frame 40 is positioned below the head 8 to which the cap 50 is attached (step S12), and the head 8 and the frame 40 are fixed using the second fixing member 32 (step S13).
  • the second fixing member 32 may be provided downward from above the head 8 as illustrated, or may be provided upward from below the cap 50 . This completes the liquid ejection device 1 with the removable cap 50 attached (step S14).
  • step S21 is the same as step S11 described above.
  • the frame 40 is positioned above the head 8 to which the cap 50 is attached (step S22), and the head 8 and the frame 40 are fixed using the second fixing member 32 (step S23).
  • the second fixing member 32 may be provided from the bottom to the top of the cap 50 as illustrated, or may be provided from the top to the bottom of the head 8 . This completes the liquid ejection device 1 with the removable cap 50 attached (step S24).
  • frame 40 or housing 40A may be positioned as holding portion 101 positioned at the tip of robot arm 100 shown in FIGS. 11 and/or 12 .
  • the liquid ejection device 1 includes the head 8, the holding portion, the cap 50, and the second fixing member 32.
  • the head 8 has a first surface 23a for ejecting liquid.
  • the holding section holds the head 8 .
  • a cap 50 is fixed to the head 8 using a removable first fixing member 31 and covers the first surface 23a.
  • the second fixing member 32 fixes the head 8 and the holding portion.
  • first fixing member 31 and the second fixing member 32 according to the embodiment are provided toward the same side along the thickness direction of the head 8 .
  • the workability can be improved, and the first surface 23a can be protected by the cap 50 until the head 8 is used, so that the reliability in assembling the liquid ejection device 1 can be improved.
  • first fixing member 31 and the second fixing member 32 according to the embodiment are provided along the thickness direction of the head 8 toward opposite sides. As a result, the workability can be improved, and the first surface 23a can be protected by the cap 50 until the head 8 is used, so that the reliability in assembling the liquid ejection device 1 can be improved.
  • the first fixing member 31 according to the embodiment is detachably provided in the direction in which the cap 50 is positioned from the holding portion. As a result, the workability can be improved, and the first surface 23a can be protected by the cap 50 until the head 8 is used, so that the reliability in assembling the liquid ejection device 1 can be improved.
  • the liquid ejection device 1A includes a robot arm 100 having a holding portion 101 positioned at its tip.
  • the first surface 23a of the head 8 can be protected by the cap 50 until the head 8 is used, and the reliability in assembling the liquid ejecting apparatus 1 can be improved. can.
  • the head 8 includes a nozzle plate 23 having a first surface 23a and a second surface 23b facing the first surface 23a, and a nozzle plate 23 positioned on the second surface 23b and laminated in the thickness direction of the head 8.
  • a flow path member 24 having a plurality of reservoir plates and a base plate 25 located on the opposite side of the nozzle plate 23 across the flow path member 24 and having a greater thickness than each reservoir plate are provided.
  • the base plate 25 has a first hole for mounting the first fixing member 31 and a second hole for mounting the second fixing member 32 . This increases the durability of the head 8 .
  • the channel member 24 has a first through portion located away from the second fixing member 32 at a position corresponding to the second hole.
  • the cap 50 according to the embodiment has a second through portion located away from the second fixing member 32 at a position corresponding to the second hole. Thereby, workability can be improved.
  • Reference Signs List 1 1A liquid ejection device 4 applicator 6 transport roller (an example of a transport unit) 8 head 10 dryer 14 controller 23 nozzle plate 23a first surface 24 channel member 25 base plate 31 first fixing member 32 second fixing member 40 frame 50 cap

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Coating Apparatus (AREA)
PCT/JP2022/013711 2021-03-31 2022-03-23 液体吐出装置および液体吐出装置の組み立て方法 Ceased WO2022210211A1 (ja)

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Application Number Priority Date Filing Date Title
JP2023511088A JP7447355B2 (ja) 2021-03-31 2022-03-23 液体吐出装置および液体吐出装置の組み立て方法
CN202280025199.6A CN117083180A (zh) 2021-03-31 2022-03-23 液体喷出装置及液体喷出装置的组装方法
EP22780425.9A EP4316851A4 (en) 2021-03-31 2022-03-23 Liquid ejection device and assembly method for a liquid ejection device
US18/552,900 US20240190150A1 (en) 2021-03-31 2022-03-23 Liquid discharge device and assembly method for liquid discharge device
JP2024028116A JP7670890B2 (ja) 2021-03-31 2024-02-28 液体吐出装置および液体吐出装置の組み立て方法
JP2025068007A JP2025096610A (ja) 2021-03-31 2025-04-17 液体吐出装置および液体吐出装置の組み立て方法

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JP2021061817 2021-03-31

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JP2024054406A (ja) 2024-04-16
EP4316851A4 (en) 2025-04-02
JP7670890B2 (ja) 2025-04-30
EP4316851A1 (en) 2024-02-07
JP2025096610A (ja) 2025-06-26
US20240190150A1 (en) 2024-06-13

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