WO2020170868A1 - Printing device - Google Patents

Printing device Download PDF

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Publication number
WO2020170868A1
WO2020170868A1 PCT/JP2020/004931 JP2020004931W WO2020170868A1 WO 2020170868 A1 WO2020170868 A1 WO 2020170868A1 JP 2020004931 W JP2020004931 W JP 2020004931W WO 2020170868 A1 WO2020170868 A1 WO 2020170868A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
conveyor belt
printing
push
support base
Prior art date
Application number
PCT/JP2020/004931
Other languages
French (fr)
Japanese (ja)
Inventor
孝一 一ノ▲瀬▼
克己 土肥
真一郎 西口
和俊 山城
Original Assignee
東伸工業株式会社
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 東伸工業株式会社 filed Critical 東伸工業株式会社
Priority to EP20760268.1A priority Critical patent/EP3928984A4/en
Priority to CN202080012266.1A priority patent/CN113396061B/en
Priority to JP2021501867A priority patent/JP7345900B2/en
Publication of WO2020170868A1 publication Critical patent/WO2020170868A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/24—Supports for workpieces for webs
    • 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
    • B41J11/007—Conveyor belts or like feeding devices
    • 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
    • B41J11/0085—Using suction for maintaining printing material flat
    • 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
    • B41J3/4078—Printing on textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/06—Advancing webs by friction band
    • B65H20/08—Advancing webs by friction band to effect step-by-step advancement of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/449—Features of movement or transforming movement of handled material
    • B65H2301/4493—Features of movement or transforming movement of handled material intermittent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/364—Means for producing, distributing or controlling suction simultaneously blowing and sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/174—Textile; fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00—Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0056—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics

Definitions

  • the present invention relates to a printing apparatus, and more particularly, to a printing apparatus having a function of supporting an intermittent feeding operation of a conveyor belt that conveys an object to be printed.
  • a printing device using a screen plate as disclosed in Patent Document 1 includes a conveyor belt that conveys the cloth with the cloth attached to the surface thereof, a drive roller that drives the conveyor belt, and a screen plate on the surface of the cloth on which patterns for printing are formed.
  • a plate-making region is formed on the screen plate.
  • the plate making area has an area where the ink is shielded and a hole through which the ink passes.
  • the ink By injecting the ink on the screen plate and moving the squeegee on the surface of the screen plate while pressing the screen plate against the fabric, the ink passes through the holes of the screen plate and the fabric under the screen plate is printed. It When the operation of the squeegee is completed, the cloth is intermittently fed by the drive roller and the conveyor belt, the surface area of the cloth to be printed next is located under the screen plate, and the surface of the cloth is sequentially printed.
  • a printing device for example, a printing device using an inkjet mechanism as disclosed in Patent Document 2 is known.
  • This printing apparatus has a plurality of nozzles accommodated in a print head, and each nozzle ejects a plurality of colors of ink, respectively.
  • the conveyor belt intermittently conveys the cloth at intervals of the printing pitch of the print head. Every time the cloth is intermittently conveyed, the print head is moved along a direction (width direction of the cloth) orthogonal to the conveyance direction of the cloth, ink is ejected from the nozzles, and a pattern is printed on the surface of the cloth.
  • the accuracy of intermittent feeding of fabric may be rough and a transport error may occur.
  • a transport error may occur when the cloth is conveyed by a distance shorter than the length of the printing pitch.
  • a large overlap may occur between a previously printed portion and a later printed portion, which may cause color unevenness.
  • the fabric is conveyed at a distance longer than the length of the printing pitch, there may be a gap between the previously printed portion and the later printed portion.
  • the conveyor belt of the printing apparatus is generally an endless belt, and is stretched between a driving roller and a driven roller provided on the upstream side and the downstream side of the cloth in the conveying direction.
  • a drive source such as a servo motor is connected to the drive roller. By intermittently operating the drive source, the drive roller rotates and the transport belt is intermittently fed. Even if there is no error in the drive of the drive roller, when the conveyor belt itself expands or contracts, the cloth conveyance position deviates from the desired position, resulting in a conveyance error.
  • the central portion of the transport belt in the transport direction is not supported by the drive roller or the driven roller like the both ends on the upstream side or the downstream side, and is likely to expand and contract.
  • the friction force between the lower surface of the conveyor belt and the upper surface of the support belt causes the conveyor belt to move. Stretch occurs in the central part of the. An error of about ⁇ 0.3 mm may occur depending on the material of the conveyor belt.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a printing device having a function of suppressing expansion and contraction of a conveyor belt during intermittent feeding operation of the conveyor belt.
  • a printing apparatus includes a conveyor belt that supports a print target from below and conveys the conveyor belt in a horizontal direction, a belt driving mechanism that intermittently feeds the conveyor belt, and a traveling path of the conveyor belt.
  • a printing mechanism that prints on an object, a support base that supports the conveyor belt from below during printing by the printing mechanism, and a belt feed assist mechanism that assists the intermittent feeding operation of the conveyor belt by the belt drive mechanism.
  • the belt feeding assist mechanism assists the intermittent feeding operation of the conveyor belt, so that expansion and contraction of the conveyor belt can be suppressed and accurate printing can be performed on the fabric.
  • the belt feeding support mechanism assists the intermittent feeding operation of the conveyor belt every time the intermittent feeding operation of the conveyor belt is performed by the belt driving mechanism.
  • the belt feeding support mechanism may be a gap forming mechanism that forms a gap between the lower surface of the conveyor belt and the support base.
  • the belt feeding support mechanism may include an air hole formed in the support base and an air supply mechanism that supplies air to be fed from the air hole toward the lower surface of the conveyor belt.
  • the belt feed assist mechanism is a push-up mechanism that pushes up the conveyor belt and separates the conveyor belt from the support base.
  • the push-up mechanism is configured so that the push-up member contacts the lower surface of the transport belt and pushes up the transport belt, and the upper end of the push-up member is projected and retracted with respect to the upper surface of the support base.
  • An elevating mechanism for elevating the push-up member may be provided.
  • the push-up member may be a push-up roller that rotates with the movement of the transport belt.
  • the intermittent feeding operation of the conveyor belt is supported by the belt feeding assist mechanism, the expansion and contraction of the conveyor belt can be suppressed, and the conveyance error of the cloth can be reduced to perform accurate printing. it can.
  • FIG. 3 is a plan view showing a schematic configuration of a main part of a transport belt and a support base which are partially cut away.
  • FIG. 3 is an enlarged perspective view of a main part with a transport belt and a support base partially cut away.
  • FIG. 3 is an enlarged cross-sectional view of a main part of the printing device.
  • It is a side view which shows the schematic structure of the whole printing apparatus which concerns on 2nd Embodiment.
  • FIG. 3 is a plan view showing a schematic configuration of a printing device. It is a perspective view of a push-up mechanism. It is a side view which shows the other example of a push-up mechanism. It is a side view which shows the other example of a push-up mechanism.
  • FIG. 6 is a plan view showing another example of the overall schematic configuration of the printing apparatus.
  • FIG. 1 to 4 show a printing device 10 according to a first embodiment of the present invention.
  • the printing device 10 is arranged on a transport belt 11 that supports a print target from below and transports it in a horizontal direction, a belt drive mechanism 12 that intermittently feeds the transport belt 11, and a traveling path of the transport belt 11 to perform printing.
  • a printing mechanism 13 that prints on an object
  • a support base 14 that supports the conveyor belt 11 from below during printing by the printing mechanism 13, and a conveyor belt every time the belt drive mechanism 12 intermittently feeds the conveyor belt 11.
  • 11 and a belt feeding support mechanism 20 for supporting the intermittent feeding operation.
  • the intermittent feeding operation includes an operation of transporting the transport belt 11 for a predetermined distance and an operation of stopping the transport belt 11, and refers to an operation in which the transport operation and the stop operation are repeated.
  • the print target is cloth C, for example.
  • the material of the cloth C is not particularly limited, and various materials composed of natural fibers such as cotton and silk and artificial fibers such as polyester, rayon and acetate can be used.
  • the cloth is conveyed from the left side to the right side in FIG. 1, the direction in which the cloth is conveyed is called the conveying direction, and the direction orthogonal to the conveying direction is called the width direction of the cloth.
  • the belt drive mechanism 12 includes drive rollers 12a and 12a that are provided on the upstream side and the downstream side in the transport direction and are driven to rotate, and a drive source (not shown) such as a servo motor connected to the rotation shafts of the drive rollers 12a and 12a. ) And.
  • a drive source such as a servo motor connected to the rotation shafts of the drive rollers 12a and 12a.
  • An endless conveyor belt 11 is hung between the drive rollers 12a and 12a, and the drive rollers rotate the drive rollers 12a and 12a to cause the conveyor belt 11 to be intermittently fed.
  • a driven roller may be used instead of the one driving roller 12a.
  • the conveyor belt 11 is made of an elastic material such as urethane rubber, and has an adhesive layer (not shown) provided on the upper surface thereof to support the cloth C.
  • the long cloth C wound in a roll shape is arranged on the upstream side of the conveyor belt 11, is unrolled by the unrolling roller 15a, and is stuck on the conveyor belt 11 by the sticking roller 15b.
  • the cloth C conveyed by the conveyor belt 11 has its surface printed, and is then wound by the winding roller 15c on the downstream side.
  • the surface of the conveyor belt 11 is cleaned by a cleaning device (not shown) installed in the return path from the downstream drive roller 12a to the upstream drive roller 12a, and a gluing device (not shown). ) Forms an adhesive layer on the surface.
  • the printing mechanism 13 is for performing screen printing, for example, and is on the frame 16 (FIG. 2) of the printing device 10 so as to face the support table 14 above and below the cloth C attached to the conveyor belt 11. It is provided in.
  • the printing mechanism 13 includes a plate 13a, a printing unit 13b, and a moving mechanism (not shown) that moves the plate 13a and the printing unit 13b.
  • the plate 13a has a screen (not shown) attached to the inside of a rectangular frame. Minute holes corresponding to the pattern to be printed are punched on the screen.
  • a pair of squeegee carriers reciprocates in the width direction along two guide frames extending in the width direction of the cloth C with the plate 13a interposed therebetween, and the squeegee supported by the squeegee carrier.
  • squeegee pressure is applied to the screen of the plate 13a during forward and backward movements.
  • the printing mechanism 13 first, the screen of the plate 13a is pressed against the surface of the cloth C, and then the squeegee moves on the screen.
  • the ink on the screen reaches the cloth C through the minute holes of the screen, and the desired pattern is printed on the cloth C.
  • the printing mechanism 13 is provided according to the number of colors of ink used.
  • FIG. 1 shows only one printing mechanism 13 for convenience of description.
  • the printing mechanism 13 is not limited to the configuration of this embodiment, and may be, for example, an inkjet printing mechanism.
  • the support base 14 is provided below the transport belt 11 on the outward path, and is supported by the frame 16 of the printing device 10. As shown in FIGS. 2 to 4, the support base 14 has a plurality of air holes 21 penetrating in the vertical direction.
  • a duct 22 having an open upper surface communicating with the air holes 21 is attached to the lower surface of the support base 14, and the duct 22 is connected to an air supply mechanism 23, which is, for example, a blower fan, via an air pipe 24.
  • the air supplied from the air supply mechanism 23 is blown out from the air holes 21 through the duct 22 and is sent toward the lower surface of the conveyor belt 11.
  • the air supports the load of the conveyor belt 11 located on the support base 14.
  • the amount of air blown out per a predetermined time and the velocity of the air blown out from each air hole 21 can be adjusted.
  • the transport belt 11 is lifted from the support base 14, a gap is formed between the lower surface of the transport belt 11 and the support base 14, and the upper surface of the support base 14 does not contact the lower surface of the transport belt 11.
  • the printing mechanism, the cloth, and the belt driving mechanism are not shown.
  • the air holes 21, the air pipes 24, and the air supply mechanism 23 provided in the support base 14 constitute a belt feeding assist mechanism 20, and in the present embodiment, the belt feeding assist mechanism 20 is provided on the conveyor belt 11. It is a space forming mechanism that forms a space between the lower surface and the support 14.
  • the belt feed assist mechanism 20 is not limited to one that forms a gap, and the conveyor belt 11 is supported depending on the amount of air fed in per predetermined time and the velocity of air ejected from each air hole 21.
  • the conveyance belt 11 may be in contact with the support base 14 without floating from the base 14.
  • the support base 14 includes nine support plates 14A to 14I having a length of 1200 mm in the transport direction, a length of 2400 mm in a direction orthogonal to the transport direction (width direction of the cloth C), and a thickness of 3 mm. , Are arranged continuously in the carrying direction.
  • the support base 14 is not limited to this configuration, and may be formed of one flat plate, and the number and size of the support plates are arbitrary.
  • the diameter of each air hole 21 is set to about 2 mm.
  • a total of four ducts 22 are provided in the width direction of the cloth C on each of the second, fifth, and eighth support plates 14B, 14E, and 14H. It is attached and the four ducts 22 are connected to one air supply mechanism 23 via an air pipe 24. That is, in the present embodiment, the support base 14 is provided with a total of three sets of one air supply mechanism 23 and four ducts 22. In the area corresponding to each duct 22 of each support plate 14B, 14E, 14H, seven air holes 21 are provided in the carrying direction and four air holes 21 are provided in the width direction of the cloth C. That is, a total of 48 air holes 21 are provided in each of the support plates 14B, 14E, and 14H.
  • the support plate in which the air holes 21 are formed, the number of the air holes 21 and the area in which the air holes 21 are provided are not limited to those in the present embodiment, and may be appropriately selected. It is only necessary to reduce the frictional force between the conveyor belt 11 and the support base 14.
  • the air holes 21 may be formed in any region of the support base 14.
  • the size and number of ducts 22, the number of air tubes 24, and the number of air supply mechanisms 23 are not limited as long as air can be supplied to the air holes 21, and for example, one for each support plate 14B, 14E, 14H.
  • One duct 22 may be provided.
  • the air supply mechanism 23 may be provided in each of the plurality of ducts 22. In this case, the amount of air supplied from the air holes 22 communicating with the duct 22 can be adjusted for each air supply mechanism 23.
  • the printing mechanism 13 is provided above the first, third, fourth, sixth, seventh, and ninth support plates 14A, 14C, 14D, 14F, 14G, and 14I in which the air holes 21 are not provided.
  • the printing mechanism 13 may be provided above the support plates 14B, 14E, and 14H as long as the diameter of the air holes 21 is large enough not to affect the printing on the fabric C by the printing mechanism 13. .. In FIG. 1, only the printing mechanism 13 above the support plate 14A is shown.
  • the drive source that drives the drive rollers 12a, 12a, the printing mechanism 13, and the air supply mechanism 23 are connected to a control device (not shown), and their operations are controlled by the control device.
  • the printing operation of the printing apparatus 10 is as follows. First, the cloth C is conveyed below the printing mechanism 13 by the intermittent feeding operation of the conveyor belt 11 and stopped. Then, the plate 13a of the printing mechanism 13 is pressed against the cloth C from above, and the ink is transferred from the fine holes provided in the plate 13a to the cloth C by the movement of the squeegee, whereby the cloth C is printed. At this time, the surface of the support plate 14A of the support base 14 contacts the lower surface of the conveyor belt 11 to support the cloth C. Next, the intermittent feeding operation of the conveyor belt 11 causes the cloth C to be conveyed and stopped so that the area of the cloth C to be printed next is positioned below the printing mechanism 13. Then, printing is performed on the area sent under the printing mechanism 13. Printing is performed on the fabric C by repeating these operations.
  • the air supply mechanism 23 supplies air to the air holes 21 of the support base 14 for each intermittent feeding operation of the conveyor belt 11 by the belt drive mechanism 12. That is, during the stop operation immediately before the conveyance operation of the conveyor belt 11, as shown by an arrow A1 in FIG. 4, air is supplied to the duct 22 via the air tube 24 by the air supply mechanism 23, and as shown by an arrow A2. The air is supplied to the air holes 21 of the support base 14 (support plate 14E in the illustrated example). As a result, air is sent from the air holes 21 toward the lower surface of the conveyor belt 11 as indicated by arrow A3, the conveyor belt 11 is lifted from the support base 14, and a gap is formed between the conveyor belt 11 and the support base 14. As a result, the support base 14 is not contacted.
  • the conveyor belt 11 is conveyed by the belt drive mechanism 12, moves a predetermined distance and stops, and then the supply of air by the air supply mechanism 23 is stopped. As a result, the conveyor belt 11 is lowered onto the support base 14 and comes into contact with the support base 14. After that, the printing mechanism 13 prints on the cloth C. As described above, during the transport operation of the transport belt 11, air is sent from the air holes 21 toward the lower surface of the transport belt 11, the transport belt 11 is lifted from the support base 14, and the transport belt 11 and the support base 14 are moved. A void is formed between the two, and the support base 14 is not contacted.
  • the air supply mechanism 23 supplies air to the air holes 21 of the support base 14, so that the transport belt 11 is supported from below by the air while floating from the support base 14, and when the transport belt 11 moves. Since the frictional force generated between the lower surface of the transport belt 11 and the upper surface of the support base 14 is reduced, it is possible to prevent the central portion of the transport belt 11 from being stretched and to reduce the transport error. As described above, according to the printing apparatus 10 of the present embodiment, the intermittent feeding operation of the conveyor belt 11 can be supported.
  • the conveyor belt 11 may be intermittently fed by the belt drive mechanism 12 while the conveyor belt 11 is in contact with the support base 14 without forming a gap between the conveyor belt 11 and the support base 14. Even in this case, the conveyor belt 11 is supported from below by the air, and the frictional force generated between the lower surface of the conveyor belt 11 and the upper surface of the support base 14 when the conveyor belt 11 moves is reduced. It is possible to prevent elongation from occurring in the central portion of the sheet, and it is possible to reduce the transport error.
  • the air supply mechanism 23 operates in synchronization with the intermittent feeding operation of the transport belt 11, and during the transport operation of the transport belt 11, the belt feed assist mechanism 20 moves air toward the lower surface of the transport belt 11. Is supplied, and air is not supplied while the conveyance belt 11 is stopped and printing is performed by the printing mechanism 13. However, when the supplied air does not affect the printing on the fabric C by the printing mechanism 13, the air is directed toward the lower surface of the conveyor belt 11 by the belt feeding assist mechanism 20 even during the printing operation of the printing device 10. It may continue to be supplied. That is, the conveyor belt 11 carries out the intermittent feeding operation to convey the cloth C, and the belt feeding assist mechanism 20 is always in operation during the printing operation from the start to the end of the printing on the roll-shaped cloth C by the cloth printing apparatus 10. Therefore, the air may be continuously supplied toward the lower surface of the conveyor belt 11. In this case, it is not necessary to control the air supply mechanism 23 during the operation of the printing device 10.
  • the belt feed assist mechanism 20 is not limited to the above-described configuration, and may have any form as long as it can support the load of the conveyor belt 11 and reduce the frictional force between the lower surface of the conveyor belt 11 and the support base 14. .
  • the air injection device is arranged at a height position that is aligned with the upper surface of the support base 14, and the air is injected by the air injection device at the time of the conveyance operation of the conveyance belt to convey the belt 11. It may be a void-forming mechanism that lifts up to form a void.
  • FIG. 5 to 7 show a printing device 10 according to the second embodiment of the present invention.
  • the same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
  • the support base 14 includes a set 14a of support plates 14A to 14C and a set 14b of support plates 14D to 14F, which are arranged at intervals in the transport direction.
  • Each of the set 14a and the set 14b is configured by disposing three support plates 14A to 14F, which are the same as those in the first embodiment, continuously in the transport direction.
  • the structure is not limited to this, and the support plates 14A to 14F of each set may be formed of one flat plate or an arbitrary number of flat plates. Is also optional.
  • a push-up mechanism 30 that constitutes a belt feed assist mechanism is arranged between the pair of support plates 14a and 14b.
  • the push-up mechanism 30 pushes up the transport belt 11 and separates the transport belt 11 from the support base 14. As shown in FIG. 7, the push-up mechanism 30 contacts the lower surface of the transport belt 11 and pushes up the transport belt 11.
  • the push-up member 31 is provided with two push-up rollers 31A and 31A having substantially the same length as the width of the support base 14.
  • the push-up rollers 31A, 31A are arranged at intervals in the carrying direction along the direction orthogonal to the carrying direction, that is, along the width direction of the cloth C.
  • Each of the push-up rollers 31A, 31A has a bearing and the like inside, is rotatably supported by the rotating shaft 31a, and comes into contact with the lower surface of the conveyor belt 11 to rotate by the movement of the conveyor belt 11.
  • the number of the push-up rollers 31A and 31A may be one or three or more, but the frictional force between the transport belt 11 and the push-up rollers 31A and 31A when the transport belt 11 is moved is reduced. From the viewpoint, the smaller number is preferable, and from the viewpoint of stably lifting the conveyor belt 11, the larger number is preferable, and in the present embodiment, the number is two.
  • the elevating mechanisms 32 are provided at both ends of the push-up rollers 31A, 31A in the length direction (width direction of the cloth), and as shown in FIG. 7, the movable plate 33, the frame 16 and the base of the printing apparatus 10 (see FIG. A pair of guide frames 34, 34 fixed to (not shown) or the like, and an actuator including, for example, a hydraulic cylinder 35 are provided.
  • a shaft support groove 33a is formed on the inner surface of the movable plate 33, and both ends of the rotating shaft 31a of each of the push-up rollers 31A and 31A are supported by the shaft support groove 33a.
  • the hydraulic cylinder 35 includes a cylinder body 35a and a rod 35b that moves in and out of the cylinder body 35a, and the tip of the rod 35b is connected to the lower surface of the movable plate 33. As the rod 35b moves in and out, the push-up rollers 31A and 31A attached to the movable plate 33 move up and down along the guide frames 34 and 34.
  • the push-up rollers 31A and 31A When the rod 35b is pulled into the cylinder body 35a, the upper ends of the push-up rollers 31A and 31A are located below the upper surface of the support base 14, and when the rod 35b extends from the cylinder body 35a, the push-up rollers 31A and 31A are located. Is located above the upper surface of the support base 14. With the push-up rollers 31A, 31A contacting the lower surface of the conveyor belt 11 and pushing up the conveyor belt 11, the height from the upper surface of the support base 14 to the upper ends of the push-up rollers 31A, 31A is set to about 5 to 10 mm. However, the present invention is not limited to this.
  • the drive source that drives the drive rollers 12a, 12a, the printing mechanism 13, and the actuator (hydraulic cylinder 35) of the lifting mechanism 32 are connected to a control device (not shown), and their operations are controlled by the control device. ..
  • the rod 35b of the hydraulic cylinder 35 of the lifting mechanism 32 extends and the movable plate 33 rises, and the upper ends of the push-up rollers 31A and 31A are supported by the support base 14.
  • the conveyor belt 11 is lifted above the upper surface of the conveyor belt 11 and is separated from the support base 14. Due to the lifting of the push-up rollers 31A and 31A, the conveyor belt 11 is lifted from the support base 14 and is not in contact with the support base 14. In this state, the conveyor belt 11 is conveyed by the belt drive mechanism 12 and moves a predetermined distance. At this time, the push-up rollers 31A and 31A rotate with the movement of the conveyor belt 11.
  • This rotation reduces the frictional force between the push-up rollers 31A, 31A and the conveyor belt 11 and prevents the conveyor belt 11 from expanding and contracting under the influence of the push-up rollers 31A, 31A.
  • the conveyor belt 11 moves a predetermined distance and stops, the rod 35b of the hydraulic cylinder 35 is drawn into the cylinder body 35a, the movable plate 33 descends, and the push-up rollers 31A and 31A move above the upper surface of the support base 14. It is in the lower position. As a result, the conveyor belt 11 is lowered onto the support base 14 and comes into contact with the support base 14. After that, the printing mechanism 13 prints on the cloth C. In this way, during the transport operation of the transport belt 11, the transport belt 11 is lifted from the support base 14 by the elevating mechanism 32, and the transport belt 11 does not come into contact with the support base 14.
  • the push-up rollers 31A, 31A lift the conveyor belt 11 and separate it from the support base 14 for each intermittent feeding operation of the conveyor belt 11, thereby supporting the lower surface of the conveyor belt 11 when the conveyor belt 11 moves. Since no frictional force is generated between the base 14 and the upper surface, it is possible to prevent the central portion of the conveyor belt 11 from being stretched, and to reduce the conveyance error. As described above, according to the printing apparatus 10 of the present embodiment, the intermittent feeding operation of the conveyor belt 11 can be supported.
  • the push-up rollers 31A and 31A do not rotate with the movement of the conveyor belt 11 and may be rod-shaped members. In this case, when the conveyor belt 11 is conveyed by the belt driving mechanism 12 and moves a predetermined distance, the push-up rollers 31A and 31A contact the lower surface of the conveyor belt 11 but do not rotate. Even in this case, the frictional force between the push-up rollers 31A, 31A and the conveyor belt 11 becomes smaller than that in the conventional technique.
  • the configuration of the elevating mechanism 32 is not limited to this embodiment, and may be any configuration as long as the push-up rollers 31A and 31A can be lifted.
  • the lifting mechanism 32 may be a rodless cylinder 40.
  • the rodless cylinder 40 is, for example, a cylinder tube 40b arranged between upper and lower base portions 40a, 40a fixed to a frame 16 or a base (not shown) of the printing apparatus 10.
  • a piston (not shown) is housed in 40b, and a slide body 40c is provided on the outer peripheral surface of the cylinder tube 40b so as to be slidable along the cylinder tube 40b.
  • the piston and the slide body 40c move integrally by a magnetic coupling force. For example, when the piston is moved by air, the slide body 40c follows the movement of the piston.
  • a pair of rodless cylinders 40 are provided for each push-up roller 31A, and the pair of rodless cylinders 40 are arranged on both ends of each push-up roller 31A (in the width direction of the cloth C).
  • the tip ends of both ends of 31a are fixed to the slide body 40c.
  • the push-up rollers 31A and 31A move up and down such that the upper ends thereof are located between the upper position and the lower position with respect to the upper surface of the support base 14.
  • a movable plate is attached to each of the slide bodies 40c of the pair of rodless cylinders 40, and the tip ends of both ends of the rotary shafts 31a of the two push-up rollers 31A and 31A are fixed to each movable plate.
  • the two push-up rollers 31A and 31A may be moved simultaneously by 40.
  • the lifting mechanism 32 may be the cam mechanism 50 shown in FIG.
  • the cam mechanism 50 has a rotating body 51 as a driving cam that is rotated by the rotation of a motor (not shown), and a rod-shaped member 52 as a driven cam arranged above the rotating body 51.
  • the rotating body 51 has a circular disk portion 51a having a central portion attached to the output shaft 51c of the motor, and a protruding portion 51b protruding outward from the disk portion 51a.
  • a roller 52a that is rotatable by the rotation of the rotor 51 is provided to reduce the frictional force between the rod-shaped member 52 and the rotor 51, and the upper end of the rod-shaped member 52 is provided at the upper end.
  • the tips of the rotary shafts 31a of the push-up rollers 31A and 31A are fixed.
  • the protrusion 51b faces upward due to the rotation of the output shaft 51c of the motor, the rod-shaped member 52 is lifted and the push-up rollers 31A and 31A fixed to the rod-shaped member 52 rise.
  • the projecting portion 51b faces a direction other than the upward direction, for example, the lateral direction or the downward direction, the rod-shaped member 52 and the push-up rollers 31A and 31A fixed to the rod-shaped member 52 descend.
  • the push-up member 31 is not limited to the push-up rollers 31A and 31A, and can be brought into contact with the lower surface of the conveyor belt 11 to push up the conveyor belt 11 so that the conveyor belt 11 does not contact the upper surface of the support base 14. Any form may be used as long as it is provided.
  • the push-up member 31 may be a spherical body rotatably supported by the base portion, or may include a plurality of spherical bodies.
  • the push-up mechanism 30 is arranged between the two pairs of support plates 14a and 14b, but the arrangement position of the push-up mechanism 30 is not limited to this, and for example, FIG.
  • the support base 14 may include three sets 14a to 14c of support plates, and the push-up mechanism 30 may be arranged between the sets 14a to 14c of support plates.
  • FIG. 10 between the set 14a of the support plates 14A, 14B and the set 14b of the support plates 14C, 14D, 14E, between the set 14b of the support plates 14C, 14D, 14E and the set 14c of the support plates 14F, 14G.
  • a push-up mechanism 30 is arranged in each of the above. Further, the push-up mechanism 30 may be arranged on both ends of the support base 14 in the transport direction.
  • Printing Device 11 Conveyor Belt 12 Belt Driving Mechanism 13 Printing Mechanism 14 Supporting Stand 20 Belt Feeding Support Mechanism 21 Air Hole 22 Duct 23 Air Supply Mechanism 30 Push-up Mechanism 31 Push-up Members 31A, 31A Push-up Roller 32 Lifting Mechanism 33 Movable Plate 35 Hydraulic Cylinder C fabric (print target)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Ink Jet (AREA)
  • Screen Printers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
  • Handling Of Sheets (AREA)

Abstract

Provided is a printing device having a function to suppress a transport belt from being stretched and contracted during an intermittent feeding operation of the transport belt.　This printing device 10 has: a transport belt 11 for supporting a printing target object from below and horizontally transporting the printing target object; a belt drive mechanism 12 for performing intermittent feeding operation of the transport belt 11; a printing mechanism 13 that is arranged in the travel path of the transport belt 11 and performs printing on the printing target object; a support base 14 for supporting the transport belt 11 from below during printing by the printing mechanism 13; and a belt feed assisting mechanism that assists the intermittent feeding operation of the transport belt 11 performed by the belt drive mechanism 12.

Description

印刷装置Printer
　本発明は、印刷装置に関し、詳しくは、印刷対象物を搬送する搬送ベルトの間欠送り動作を支援する機能を備えた印刷装置に関するものである。 The present invention relates to a printing apparatus, and more particularly, to a printing apparatus having a function of supporting an intermittent feeding operation of a conveyor belt that conveys an object to be printed.
　従来、例えば特許文献１に示すようなスクリーン版を用いた印刷装置が提供されている。特許文献１に記載の印刷装置は、表面に布地が貼付けられて布地を搬送する搬送ベルトと、搬送ベルトを駆動させる駆動ローラと、布地の表面に位置決めされ印刷する図柄が形成されたスクリーン版と、スキージを有する印刷ユニットと、印刷ユニットによる布地への印刷時に搬送ベルトを下面から支持する支持台とを備えている。スクリーン版には製版領域が形成されている。製版領域は、インクが遮蔽される領域とインクが通過する孔とを有する。スクリーン版上にインクを流し、スクリーン版を布地に押し当てた状態でスキージをスクリーン版の表面で移動させることにより、インクがスクリーン版の孔を通過し、スクリーン版下の布地に印刷が施される。スキージの動作が完了すると、駆動ローラ及び搬送ベルトにより布地が間欠送りされ、スクリーン版の下に次に印刷が施される布地の表面領域が位置し、順次布地の表面に印刷が施される。 Conventionally, for example, a printing device using a screen plate as disclosed in Patent Document 1 has been provided. The printing device described in Patent Document 1 includes a conveyor belt that conveys the cloth with the cloth attached to the surface thereof, a drive roller that drives the conveyor belt, and a screen plate on the surface of the cloth on which patterns for printing are formed. , A printing unit having a squeegee, and a support base for supporting the conveyor belt from the lower surface when printing on the fabric by the printing unit. A plate-making region is formed on the screen plate. The plate making area has an area where the ink is shielded and a hole through which the ink passes. By injecting the ink on the screen plate and moving the squeegee on the surface of the screen plate while pressing the screen plate against the fabric, the ink passes through the holes of the screen plate and the fabric under the screen plate is printed. It When the operation of the squeegee is completed, the cloth is intermittently fed by the drive roller and the conveyor belt, the surface area of the cloth to be printed next is located under the screen plate, and the surface of the cloth is sequentially printed.
　また、印刷装置として、例えば特許文献２に示すようなインクジェット機構による印刷装置が知られている。この印刷装置はプリントヘッドに収容された複数のノズルを有しており、各ノズルは複数色のインクをそれぞれ噴射する。搬送ベルトはプリントヘッドの印刷ピッチの間隔で間欠的に布地を搬送する。布地を間欠的に搬送する毎に、布地の搬送方向に直交する方向（布地の幅方向）に沿ってプリントヘッドを移動させ、ノズルからインクを噴射し、布地の表面に図柄の印刷を行う。 Further, as a printing device, for example, a printing device using an inkjet mechanism as disclosed in Patent Document 2 is known. This printing apparatus has a plurality of nozzles accommodated in a print head, and each nozzle ejects a plurality of colors of ink, respectively. The conveyor belt intermittently conveys the cloth at intervals of the printing pitch of the print head. Every time the cloth is intermittently conveyed, the print head is moved along a direction (width direction of the cloth) orthogonal to the conveyance direction of the cloth, ink is ejected from the nozzles, and a pattern is printed on the surface of the cloth.
特開２０１５－０４４３３０号公報JP, 2005-044330, A 特許５１１６５４２号公報Japanese Patent No. 5116542
　スクリーン版やインクジェット機構による印刷装置においては、布地の間欠送りの精度が荒く搬送誤差が生じる場合がある。印刷ピッチの長さよりも短い距離で布地が搬送されると、先に印刷された部分と後に印刷された部分とに大きな重なりが生じて色むらが発生することがある。また、印刷ピッチの長さよりも長い距離で布地が搬送されると、先に印刷された部分と後に印刷された部分との間に隙間が空いてしまうことがある。このように、搬送誤差があると布地に精度の良い印刷を施すことができない。このため、搬送誤差をできるだけ小さくし、搬送精度を向上させることが要望されている。 In a printing device using a screen plate or an inkjet mechanism, the accuracy of intermittent feeding of fabric may be rough and a transport error may occur. When the cloth is conveyed by a distance shorter than the length of the printing pitch, a large overlap may occur between a previously printed portion and a later printed portion, which may cause color unevenness. In addition, when the fabric is conveyed at a distance longer than the length of the printing pitch, there may be a gap between the previously printed portion and the later printed portion. As described above, if there is a transport error, it is not possible to perform accurate printing on the fabric. For this reason, it is desired to minimize the transport error and improve the transport accuracy.
　搬送誤差が生じる原因の一つに、搬送ベルト自体の伸縮がある。印刷装置の搬送ベルトは、一般に無端状ベルトであり、布地の搬送方向の上流側と下流側とに設けられた駆動ローラ及び従動ローラの間に掛け渡されている。駆動ローラにはサーボモータなどの駆動源が接続されている。駆動源を間欠動作させることで、駆動ローラが回転し搬送ベルトが間欠送りされる。駆動ローラの駆動には誤差がない場合であっても、搬送ベルト自体が伸縮すると布地の搬送位置が所望の位置からずれ、結果として搬送誤差が生じる。特に、搬送ベルトの搬送方向の中央部は、上流側又は下流側の両端部のように駆動ローラ又は従動ローラに支持されておらず伸縮が生じやすくなる。また、搬送ベルトの中央部の下面を支持台と接触させて支持台により支持しながら搬送ベルトを間欠的に移動させると、搬送ベルトの下面と支持台の上面との間の摩擦力により搬送ベルトの中央部に伸びが生じる。搬送ベルトの材質にもよるが、±０．３ｍｍ程度の誤差が生じる場合がある。 -One of the causes of conveyance error is expansion and contraction of the conveyor belt itself. The conveyor belt of the printing apparatus is generally an endless belt, and is stretched between a driving roller and a driven roller provided on the upstream side and the downstream side of the cloth in the conveying direction. A drive source such as a servo motor is connected to the drive roller. By intermittently operating the drive source, the drive roller rotates and the transport belt is intermittently fed. Even if there is no error in the drive of the drive roller, when the conveyor belt itself expands or contracts, the cloth conveyance position deviates from the desired position, resulting in a conveyance error. In particular, the central portion of the transport belt in the transport direction is not supported by the drive roller or the driven roller like the both ends on the upstream side or the downstream side, and is likely to expand and contract. In addition, when the lower surface of the central portion of the conveyor belt is brought into contact with the support table and the conveyor belt is intermittently moved while being supported by the support table, the friction force between the lower surface of the conveyor belt and the upper surface of the support belt causes the conveyor belt to move. Stretch occurs in the central part of the. An error of about ±0.3 mm may occur depending on the material of the conveyor belt.
　本発明は、上記した課題に着目してなされたものであり、搬送ベルトの間欠送り動作時に搬送ベルトの伸縮を抑制する機能を有する印刷装置を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a printing device having a function of suppressing expansion and contraction of a conveyor belt during intermittent feeding operation of the conveyor belt.
　本発明による印刷装置は、印刷対象物を下方より支持して水平方向へ搬送する搬送ベルトと、前記搬送ベルトを間欠送り動作させるベルト駆動機構と、前記搬送ベルトの走行経路上に配置され、印刷対象物への印刷を施す印刷機構と、前記印刷機構による印刷時に前記搬送ベルトを下方より支持する支持台と、前記ベルト駆動機構による前記搬送ベルトの間欠送り動作を支援するベルト送り支援機構とを有する。 A printing apparatus according to the present invention includes a conveyor belt that supports a print target from below and conveys the conveyor belt in a horizontal direction, a belt driving mechanism that intermittently feeds the conveyor belt, and a traveling path of the conveyor belt. A printing mechanism that prints on an object, a support base that supports the conveyor belt from below during printing by the printing mechanism, and a belt feed assist mechanism that assists the intermittent feeding operation of the conveyor belt by the belt drive mechanism. Have.
　上記の構成によれば、ベルト送り支援機構により搬送ベルトの間欠送り動作が支援されるので、搬送ベルトの伸縮を抑制し、布地に精度の良い印刷を施すことができる。 According to the above configuration, the belt feeding assist mechanism assists the intermittent feeding operation of the conveyor belt, so that expansion and contraction of the conveyor belt can be suppressed and accurate printing can be performed on the fabric.
　一実施形態においては、前記ベルト送り支援機構は、前記ベルト駆動機構により前記搬送ベルトの間欠送り動作が行われる毎に、前記搬送ベルトの間欠送り動作を支援する。 In one embodiment, the belt feeding support mechanism assists the intermittent feeding operation of the conveyor belt every time the intermittent feeding operation of the conveyor belt is performed by the belt driving mechanism.
　前記ベルト送り支援機構は、前記搬送ベルトの下面と前記支持台との間に空隙を形成する空隙形成機構であってもよい。 The belt feeding support mechanism may be a gap forming mechanism that forms a gap between the lower surface of the conveyor belt and the support base.
　前記ベルト送り支援機構は、前記支持台に形成された空気孔と、前記空気孔から前記搬送ベルトの下面に向けて送り込む空気を供給する空気供給機構とを有するものであってもよい。 The belt feeding support mechanism may include an air hole formed in the support base and an air supply mechanism that supplies air to be fed from the air hole toward the lower surface of the conveyor belt.
　他の実施形態においては、前記ベルト送り支援機構は、前記搬送ベルトを押し上げて前記搬送ベルトを前記支持台から離反させる押上機構である。 In another embodiment, the belt feed assist mechanism is a push-up mechanism that pushes up the conveyor belt and separates the conveyor belt from the support base.
　上記の他の実施形態においては、前記押上機構は、前記搬送ベルトの下面に当接して前記搬送ベルトを押し上げる押上部材と、前記押上部材の上端が前記支持台の上面に対して出没するように前記押上部材を昇降させる昇降機構とを備えたものであってもよい。 In the above-mentioned other embodiment, the push-up mechanism is configured so that the push-up member contacts the lower surface of the transport belt and pushes up the transport belt, and the upper end of the push-up member is projected and retracted with respect to the upper surface of the support base. An elevating mechanism for elevating the push-up member may be provided.
　前記押上部材は、前記搬送ベルトの移動とともに回転する押上ローラであってもよい。 The push-up member may be a push-up roller that rotates with the movement of the transport belt.
　本発明によれば、ベルト送り支援機構により搬送ベルトの間欠送り動作が支援されるので、搬送ベルトの伸縮を抑制することができ、布地の搬送誤差を小さくして精度の良い印刷を施すことができる。 According to the present invention, since the intermittent feeding operation of the conveyor belt is supported by the belt feeding assist mechanism, the expansion and contraction of the conveyor belt can be suppressed, and the conveyance error of the cloth can be reduced to perform accurate printing. it can.
本発明の第１の実施形態に係る印刷装置の全体の概略構成を示す側面図である。It is a side view which shows the schematic structure of the whole printing apparatus which concerns on the 1st Embodiment of this invention. 搬送ベルト、支持台の一部を切り欠いた要部の概略構成を示す平面図である。FIG. 3 is a plan view showing a schematic configuration of a main part of a transport belt and a support base which are partially cut away. 搬送ベルト、支持台の一部を切り欠いた要部の拡大斜視図である。FIG. 3 is an enlarged perspective view of a main part with a transport belt and a support base partially cut away. 印刷装置の要部の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a main part of the printing device. 第２の実施形態に係る印刷装置の全体の概略構成を示す側面図である。It is a side view which shows the schematic structure of the whole printing apparatus which concerns on 2nd Embodiment. 印刷装置の概略構成を示す平面図である。FIG. 3 is a plan view showing a schematic configuration of a printing device. 押上機構の斜視図である。It is a perspective view of a push-up mechanism. 押上機構の他の例を示す側面図である。It is a side view which shows the other example of a push-up mechanism. 押上機構の他の例を示す側面図である。It is a side view which shows the other example of a push-up mechanism. 印刷装置の全体の概略構成の他の例を示す平面図である。FIG. 6 is a plan view showing another example of the overall schematic configuration of the printing apparatus.
　本発明の実施形態を図面を参照して説明する。
　図１～図４は、本発明の第１の実施形態の印刷装置１０を示す。印刷装置１０は、印刷対象物を下方より支持して水平方向へ搬送する搬送ベルト１１と、搬送ベルト１１を間欠送り動作させるベルト駆動機構１２と、搬送ベルト１１の走行経路上に配置され、印刷対象物への印刷を施す印刷機構１３と、印刷機構１３による印刷時に搬送ベルト１１を下方より支持する支持台１４と、ベルト駆動機構１２により搬送ベルト１１の間欠送り動作が行われる毎に搬送ベルト１１の間欠送り動作を支援するベルト送り支援機構２０とを有する。なお、間欠送り動作とは、搬送ベルト１１を所定の距離搬送させる動作と停止させる動作とを含み、搬送動作と停止動作とを繰り返す動作をいう。 Embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a printing device 10 according to a first embodiment of the present invention. The printing device 10 is arranged on a transport belt 11 that supports a print target from below and transports it in a horizontal direction, a belt drive mechanism 12 that intermittently feeds the transport belt 11, and a traveling path of the transport belt 11 to perform printing. A printing mechanism 13 that prints on an object, a support base 14 that supports the conveyor belt 11 from below during printing by the printing mechanism 13, and a conveyor belt every time the belt drive mechanism 12 intermittently feeds the conveyor belt 11. 11 and a belt feeding support mechanism 20 for supporting the intermittent feeding operation. In addition, the intermittent feeding operation includes an operation of transporting the transport belt 11 for a predetermined distance and an operation of stopping the transport belt 11, and refers to an operation in which the transport operation and the stop operation are repeated.
　印刷対象物は例えば布地Ｃである。布地Ｃの素材は特に限定されるものではなく、綿、絹などの天然繊維や、ポリエステル、レーヨン、アセテートなどの人造繊維などで構成された種々のものを用いることができる。布地は、図１において左側から右側に向けて搬送されており、布地が搬送される方向を搬送方向といい、搬送方向に直交する方向を布地の幅方向という。 The print target is cloth C, for example. The material of the cloth C is not particularly limited, and various materials composed of natural fibers such as cotton and silk and artificial fibers such as polyester, rayon and acetate can be used. The cloth is conveyed from the left side to the right side in FIG. 1, the direction in which the cloth is conveyed is called the conveying direction, and the direction orthogonal to the conveying direction is called the width direction of the cloth.
　ベルト駆動機構１２は、搬送方向の上流側及び下流側に設けられて回転駆動する駆動ローラ１２ａ、１２ａと、駆動ローラ１２ａ、１２ａの回転軸と連結されるサーボモータなどの駆動源（図示せず）とを備えている。駆動ローラ１２ａ、１２ａ間に無端状の搬送ベルト１１が架けられており、駆動源により駆動ローラ１２ａ、１２ａが回転して搬送ベルト１１を間欠送り動作させる。なお、一方の駆動ローラ１２ａに替えて従動ローラを用いてもよい。 The belt drive mechanism 12 includes drive rollers 12a and 12a that are provided on the upstream side and the downstream side in the transport direction and are driven to rotate, and a drive source (not shown) such as a servo motor connected to the rotation shafts of the drive rollers 12a and 12a. ) And. An endless conveyor belt 11 is hung between the drive rollers 12a and 12a, and the drive rollers rotate the drive rollers 12a and 12a to cause the conveyor belt 11 to be intermittently fed. A driven roller may be used instead of the one driving roller 12a.
　搬送ベルト１１は、ウレタンゴム等の弾性体により構成されており、上面に粘着層（図示せず）が設けられて布地Ｃを支持している。ロール状に巻かれた長尺の布地Ｃが搬送ベルト１１の上流側に配置されており、繰り出しローラ１５ａにより繰り出され、貼付ローラ１５ｂにより搬送ベルト１１上に貼付けられる。搬送ベルト１１によって搬送された布地Ｃは、表面に印刷が施された後、下流側で巻取ローラ１５ｃにより巻き取られる。また、搬送ベルト１１の表面は、下流側の駆動ローラ１２ａから上流側の駆動ローラ１２ａに向かう復路の途中に設置されている洗浄装置（図示せず）によって洗浄され、糊付装置（図示せず）によって表面に粘着層が形成される。 The conveyor belt 11 is made of an elastic material such as urethane rubber, and has an adhesive layer (not shown) provided on the upper surface thereof to support the cloth C. The long cloth C wound in a roll shape is arranged on the upstream side of the conveyor belt 11, is unrolled by the unrolling roller 15a, and is stuck on the conveyor belt 11 by the sticking roller 15b. The cloth C conveyed by the conveyor belt 11 has its surface printed, and is then wound by the winding roller 15c on the downstream side. The surface of the conveyor belt 11 is cleaned by a cleaning device (not shown) installed in the return path from the downstream drive roller 12a to the upstream drive roller 12a, and a gluing device (not shown). ) Forms an adhesive layer on the surface.
　印刷機構１３は、例えばスクリーン印刷を行うものであり、搬送ベルト１１に貼付けられた布地Ｃの上方であって、支持台１４と上下に向き合うように、印刷装置１０のフレーム１６（図２）上に設けられている。印刷機構１３は、版１３ａと、印刷ユニット１３ｂと、版１３ａ及び印刷ユニット１３ｂとを移動させる移動機構（図示せず）とを備えている。版１３ａは、矩形状の枠の内側にスクリーン（図示せず）を取り付けたものである。スクリーンには、印刷される図柄に応じた微小の孔が穿孔されている。印刷ユニット１３ｂは、版１３ａを挟んで布地Ｃの幅方向に沿って延びる２本のガイドフレームに沿って、一対のスキージキャリアが幅方向に往復動するものであり、スキージキャリアに支持されたスキージが、往動および復動時に版１３ａのスクリーンにスキージ圧を作用させる。このような印刷機構１３による印刷は、まず、布地Ｃの表面に版１３ａのスクリーンが押しつけられ、次に、スクリーン上をスキージが移動する。これにより、スクリーン上のインクがスクリーンの微小孔を通過して布地Ｃに到達し、所望の図柄が布地Ｃに印刷される。印刷機構１３は、使用するインクの色の数に応じて設けられ、例えば１０色のインクを用いる場合には、１０つの印刷機構１３が搬送方向に沿って並べられる。なお、図１には、説明の便宜上、印刷機構１３は１つのみを示している。印刷機構１３は本実施形態の構成に限定されず、例えば、インクジェット印刷機構であってもよい。 The printing mechanism 13 is for performing screen printing, for example, and is on the frame 16 (FIG. 2) of the printing device 10 so as to face the support table 14 above and below the cloth C attached to the conveyor belt 11. It is provided in. The printing mechanism 13 includes a plate 13a, a printing unit 13b, and a moving mechanism (not shown) that moves the plate 13a and the printing unit 13b. The plate 13a has a screen (not shown) attached to the inside of a rectangular frame. Minute holes corresponding to the pattern to be printed are punched on the screen. In the printing unit 13b, a pair of squeegee carriers reciprocates in the width direction along two guide frames extending in the width direction of the cloth C with the plate 13a interposed therebetween, and the squeegee supported by the squeegee carrier. However, squeegee pressure is applied to the screen of the plate 13a during forward and backward movements. In such printing by the printing mechanism 13, first, the screen of the plate 13a is pressed against the surface of the cloth C, and then the squeegee moves on the screen. As a result, the ink on the screen reaches the cloth C through the minute holes of the screen, and the desired pattern is printed on the cloth C. The printing mechanism 13 is provided according to the number of colors of ink used. For example, when 10 colors of ink are used, the ten printing mechanisms 13 are arranged in the transport direction. It should be noted that FIG. 1 shows only one printing mechanism 13 for convenience of description. The printing mechanism 13 is not limited to the configuration of this embodiment, and may be, for example, an inkjet printing mechanism.
　支持台１４は、往路の搬送ベルト１１の下方に設けられており、印刷装置１０のフレーム１６に支持されている。図２～図４に示すように、支持台１４は、上下方向に貫通する複数の空気孔２１を有している。支持台１４の下面には空気孔２１と連通する上面が開口したダクト２２が取付けられ、ダクト２２は例えば送風ファンからなる空気供給機構２３に空気管２４を介して連結されている。空気供給機構２３から供給される空気は、ダクト２２を通って空気孔２１から吹き出し、搬送ベルト１１の下面に向けて送り込まれる。この空気により支持台１４上に位置する搬送ベルト１１の荷重が支持される。吹き出させる空気の所定時間当たりの量や各空気孔２１から噴出される空気の速度は調整することができる。これらを調整することで、搬送ベルト１１を支持台１４から浮き上がらせ、搬送ベルト１１の下面と支持台１４との間に空隙を形成して支持台１４の上面が搬送ベルト１１の下面と接触しない状態とする。なお、図２、図３において、印刷機構、布地、ベルト駆動機構は図示していない。 The support base 14 is provided below the transport belt 11 on the outward path, and is supported by the frame 16 of the printing device 10. As shown in FIGS. 2 to 4, the support base 14 has a plurality of air holes 21 penetrating in the vertical direction. A duct 22 having an open upper surface communicating with the air holes 21 is attached to the lower surface of the support base 14, and the duct 22 is connected to an air supply mechanism 23, which is, for example, a blower fan, via an air pipe 24. The air supplied from the air supply mechanism 23 is blown out from the air holes 21 through the duct 22 and is sent toward the lower surface of the conveyor belt 11. The air supports the load of the conveyor belt 11 located on the support base 14. The amount of air blown out per a predetermined time and the velocity of the air blown out from each air hole 21 can be adjusted. By adjusting these, the transport belt 11 is lifted from the support base 14, a gap is formed between the lower surface of the transport belt 11 and the support base 14, and the upper surface of the support base 14 does not contact the lower surface of the transport belt 11. State. 2 and 3, the printing mechanism, the cloth, and the belt driving mechanism are not shown.
　支持台１４に設けられた空気孔２１と、空気管２４と、空気供給機構２３とは、ベルト送り支援機構２０を構成しており、本実施形態ではベルト送り支援機構２０は、搬送ベルト１１の下面と支持台１４との間に空隙を形成させる空隙形成機構である。しかし、ベルト送り支援機構２０は空隙を形成するものに限定されるものではなく、送り込まれる空気の所定時間当たりの量や各空気孔２１から噴出される空気の速度によっては、搬送ベルト１１は支持台１４から浮き上がらずに搬送ベルト１１が支持台１４と接触した状態であってもよい。 The air holes 21, the air pipes 24, and the air supply mechanism 23 provided in the support base 14 constitute a belt feeding assist mechanism 20, and in the present embodiment, the belt feeding assist mechanism 20 is provided on the conveyor belt 11. It is a space forming mechanism that forms a space between the lower surface and the support 14. However, the belt feed assist mechanism 20 is not limited to one that forms a gap, and the conveyor belt 11 is supported depending on the amount of air fed in per predetermined time and the velocity of air ejected from each air hole 21. The conveyance belt 11 may be in contact with the support base 14 without floating from the base 14.
　本実施形態では、支持台１４は、搬送方向の長さが１２００ｍｍ、搬送方向に直交する方向（布地Ｃの幅方向）の長さが２４００ｍｍ、厚みが３ｍｍの９枚の支持板１４Ａ～１４Ｉを、搬送方向に連続して配置したものである。しかし、支持台１４はこの構成に限定されず、１枚の平板から形成されていてもよく、支持板の枚数やサイズも任意である。本実施形態では、各空気孔２１の直径は、約２ｍｍに設定している。 In the present embodiment, the support base 14 includes nine support plates 14A to 14I having a length of 1200 mm in the transport direction, a length of 2400 mm in a direction orthogonal to the transport direction (width direction of the cloth C), and a thickness of 3 mm. , Are arranged continuously in the carrying direction. However, the support base 14 is not limited to this configuration, and may be formed of one flat plate, and the number and size of the support plates are arbitrary. In this embodiment, the diameter of each air hole 21 is set to about 2 mm.
　本実施形態では、図１～図３に示すように、２枚目、５枚目、８枚目の各支持板１４Ｂ、１４Ｅ、１４Ｈそれぞれに、布地Ｃの幅方向に計４つのダクト２２が取付けられており、４つのダクト２２は空気管２４を介して１つの空気供給機構２３に連結されている。すなわち、本実施形態においては、支持台１４に、１つの空気供給機構２３と４つのダクト２２との組が計３組設けられている。各支持板１４Ｂ、１４Ｅ、１４Ｈの各ダクト２２に対応する領域には、搬送方向に７つ、布地Ｃの幅方向に４つの空気孔２１が設けられている。すなわち、１枚の各支持板１４Ｂ、１４Ｅ、１４Ｈにはそれぞれ計４８個の空気孔２１が設けられている。 In this embodiment, as shown in FIGS. 1 to 3, a total of four ducts 22 are provided in the width direction of the cloth C on each of the second, fifth, and eighth support plates 14B, 14E, and 14H. It is attached and the four ducts 22 are connected to one air supply mechanism 23 via an air pipe 24. That is, in the present embodiment, the support base 14 is provided with a total of three sets of one air supply mechanism 23 and four ducts 22. In the area corresponding to each duct 22 of each support plate 14B, 14E, 14H, seven air holes 21 are provided in the carrying direction and four air holes 21 are provided in the width direction of the cloth C. That is, a total of 48 air holes 21 are provided in each of the support plates 14B, 14E, and 14H.
　空気孔２１が形成される支持板、空気孔２１の数や設けられる領域は本実施形態に限定されず適宜選択されるものであり、支持台１４上に位置する搬送ベルト１１の荷重を支持して搬送ベルト１１と支持台１４との間の摩擦力を低減することができればよい。空気孔２１は支持台１４のいずれの領域に形成されていてもよい。また、空気孔２１に空気を供給することができれば、ダクト２２の大きさや数、空気管２４の数、空気供給機構２３の数は限定されず、例えば、各支持板１４Ｂ、１４Ｅ、１４Ｈに１つのダクト２２が設けられていてもよい。また、複数のダクト２２にそれぞれ空気供給機構２３が設けられていてもよい。この場合、ダクト２２と連通する空気孔２２から供給される空気の量を空気供給機構２３毎に調整することができる。 The support plate in which the air holes 21 are formed, the number of the air holes 21 and the area in which the air holes 21 are provided are not limited to those in the present embodiment, and may be appropriately selected. It is only necessary to reduce the frictional force between the conveyor belt 11 and the support base 14. The air holes 21 may be formed in any region of the support base 14. Further, the size and number of ducts 22, the number of air tubes 24, and the number of air supply mechanisms 23 are not limited as long as air can be supplied to the air holes 21, and for example, one for each support plate 14B, 14E, 14H. One duct 22 may be provided. Further, the air supply mechanism 23 may be provided in each of the plurality of ducts 22. In this case, the amount of air supplied from the air holes 22 communicating with the duct 22 can be adjusted for each air supply mechanism 23.
　本実施形態においては、空気孔２１の設けられていない１、３、４、６、７、９枚目の支持板１４Ａ、１４Ｃ、１４Ｄ、１４Ｆ、１４Ｇ、１４Ｉの上方に印刷機構１３を設けているが、空気孔２１の直径が印刷機構１３による布地Ｃへの印刷に影響を与えない程度の大きさであれば、支持板１４Ｂ、１４Ｅ、１４Ｈの上方に印刷機構１３を設けていてもよい。なお、図１においては、支持板１４Ａの上方の印刷機構１３のみを示している。 In this embodiment, the printing mechanism 13 is provided above the first, third, fourth, sixth, seventh, and ninth support plates 14A, 14C, 14D, 14F, 14G, and 14I in which the air holes 21 are not provided. However, the printing mechanism 13 may be provided above the support plates 14B, 14E, and 14H as long as the diameter of the air holes 21 is large enough not to affect the printing on the fabric C by the printing mechanism 13. .. In FIG. 1, only the printing mechanism 13 above the support plate 14A is shown.
　駆動ローラ１２ａ、１２ａを駆動する駆動源、印刷機構１３、空気供給機構２３は、制御装置（図示せず）に接続されており、制御装置によりその動作が制御されている。 The drive source that drives the drive rollers 12a, 12a, the printing mechanism 13, and the air supply mechanism 23 are connected to a control device (not shown), and their operations are controlled by the control device.
　第１の実施形態の印刷装置１０の印刷動作は以下の通りである。まず、布地Ｃが搬送ベルト１１の間欠送り動作により印刷機構１３の下方に搬送されて停止する。そして、印刷機構１３の版１３ａが布地Ｃに上方から押し付けられ、スキージの移動によりインクが版１３ａに設けられた微細孔から布地Ｃに移されることにより、布地Ｃに印刷が施される。このとき、支持台１４の支持板１４Ａの表面は搬送ベルト１１の下面と接触して布地Ｃを支持する。次に、搬送ベルト１１の間欠送り動作により、次に印刷が施される布地Ｃの領域が印刷機構１３の下に位置するよう、布地Ｃが搬送されて停止する。そして、印刷機構１３の下に送られた領域に印刷が施される。これらの動作を繰り返して布地Ｃに印刷が施される。 The printing operation of the printing apparatus 10 according to the first embodiment is as follows. First, the cloth C is conveyed below the printing mechanism 13 by the intermittent feeding operation of the conveyor belt 11 and stopped. Then, the plate 13a of the printing mechanism 13 is pressed against the cloth C from above, and the ink is transferred from the fine holes provided in the plate 13a to the cloth C by the movement of the squeegee, whereby the cloth C is printed. At this time, the surface of the support plate 14A of the support base 14 contacts the lower surface of the conveyor belt 11 to support the cloth C. Next, the intermittent feeding operation of the conveyor belt 11 causes the cloth C to be conveyed and stopped so that the area of the cloth C to be printed next is positioned below the printing mechanism 13. Then, printing is performed on the area sent under the printing mechanism 13. Printing is performed on the fabric C by repeating these operations.
　上記の印刷動作においては、空気供給機構２３がベルト駆動機構１２による搬送ベルト１１の間欠送り動作毎に空気を支持台１４の空気孔２１に供給する。すなわち、搬送ベルト１１の搬送動作の直前の停止動作中に、図４の矢印Ａ１に示すように、空気供給機構２３により空気が空気管２４を介してダクト２２に供給され、矢印Ａ２に示すように支持台１４（図示例では支持板１４Ｅ）の空気孔２１に供給される。これにより、矢印Ａ３のように空気孔２１から搬送ベルト１１の下面に向けて空気が送り込まれ、搬送ベルト１１が支持台１４から持ち上げられて搬送ベルト１１と支持台１４との間に空隙が形成され、支持台１４に接触しない状態となる。この状態で、ベルト駆動機構１２により搬送ベルト１１が搬送動作され、所定の距離を移動して停止動作した後、空気供給機構２３による空気の供給が停止される。これにより、搬送ベルト１１が支持台１４に降ろされ、支持台１４と接触した状態となる。この後、印刷機構１３により布地Ｃに印刷が施される。このように、搬送ベルト１１の搬送動作の間は、空気孔２１から搬送ベルト１１の下面に向けて空気が送り込まれ、搬送ベルト１１が支持台１４から持ち上げられて搬送ベルト１１と支持台１４との間に空隙が形成され、支持台１４に接触しない状態となる。 In the above printing operation, the air supply mechanism 23 supplies air to the air holes 21 of the support base 14 for each intermittent feeding operation of the conveyor belt 11 by the belt drive mechanism 12. That is, during the stop operation immediately before the conveyance operation of the conveyor belt 11, as shown by an arrow A1 in FIG. 4, air is supplied to the duct 22 via the air tube 24 by the air supply mechanism 23, and as shown by an arrow A2. The air is supplied to the air holes 21 of the support base 14 (support plate 14E in the illustrated example). As a result, air is sent from the air holes 21 toward the lower surface of the conveyor belt 11 as indicated by arrow A3, the conveyor belt 11 is lifted from the support base 14, and a gap is formed between the conveyor belt 11 and the support base 14. As a result, the support base 14 is not contacted. In this state, the conveyor belt 11 is conveyed by the belt drive mechanism 12, moves a predetermined distance and stops, and then the supply of air by the air supply mechanism 23 is stopped. As a result, the conveyor belt 11 is lowered onto the support base 14 and comes into contact with the support base 14. After that, the printing mechanism 13 prints on the cloth C. As described above, during the transport operation of the transport belt 11, air is sent from the air holes 21 toward the lower surface of the transport belt 11, the transport belt 11 is lifted from the support base 14, and the transport belt 11 and the support base 14 are moved. A void is formed between the two, and the support base 14 is not contacted.
　上記の構成によれば、空気供給機構２３が空気を支持台１４の空気孔２１に供給することで、搬送ベルト１１は支持台１４から浮きつつ空気により下方から支持され、搬送ベルト１１の移動時に搬送ベルト１１の下面と支持台１４の上面との間に生じる摩擦力が低減するため、搬送ベルト１１の中央部に伸びが生じるのを防ぐことができ、搬送誤差を小さくすることができる。このように、本実施形態の印刷装置１０によれば、搬送ベルト１１の間欠送り動作を支援することができる。 According to the above configuration, the air supply mechanism 23 supplies air to the air holes 21 of the support base 14, so that the transport belt 11 is supported from below by the air while floating from the support base 14, and when the transport belt 11 moves. Since the frictional force generated between the lower surface of the transport belt 11 and the upper surface of the support base 14 is reduced, it is possible to prevent the central portion of the transport belt 11 from being stretched and to reduce the transport error. As described above, according to the printing apparatus 10 of the present embodiment, the intermittent feeding operation of the conveyor belt 11 can be supported.
　なお、搬送ベルト１１と支持台１４との間に空隙が形成されずに搬送ベルト１１が支持台１４と接触した状態のまま、ベルト駆動機構１２により搬送ベルト１１が間欠送り動作されてもよい。この場合であっても、搬送ベルト１１は空気により下方から支持され、搬送ベルト１１の移動時に搬送ベルト１１の下面と支持台１４の上面との間に生じる摩擦力が低減するため、搬送ベルト１１の中央部に伸びが生じるのを防ぐことができ、搬送誤差を小さくすることができる。 The conveyor belt 11 may be intermittently fed by the belt drive mechanism 12 while the conveyor belt 11 is in contact with the support base 14 without forming a gap between the conveyor belt 11 and the support base 14. Even in this case, the conveyor belt 11 is supported from below by the air, and the frictional force generated between the lower surface of the conveyor belt 11 and the upper surface of the support base 14 when the conveyor belt 11 moves is reduced. It is possible to prevent elongation from occurring in the central portion of the sheet, and it is possible to reduce the transport error.
　本実施形態では、空気供給機構２３は搬送ベルト１１の間欠送り動作に同期して動作しており、搬送ベルト１１の搬送動作の間はベルト送り支援機構２０により搬送ベルト１１の下面に向けて空気が供給され、搬送ベルト１１の停止動作中であって印刷機構１３による印刷が施されている間は空気が供給されていない。しかし、供給される空気が印刷機構１３による布地Ｃへの印刷に影響を与えない場合には、印刷装置１０の印刷動作中においてもベルト送り支援機構２０により搬送ベルト１１の下面に向けて空気が供給され続けていてもよい。すなわち、搬送ベルト１１が間欠送り動作して布地Ｃを搬送し、布地印刷装置１０によるロール状の布地Ｃへの印刷が開始されて終了するまでの印刷動作の間、常に、ベルト送り支援機構２０により搬送ベルト１１の下面に向けて空気が供給され続けていてもよい。この場合、印刷装置１０の動作中に空気供給機構２３を制御する必要がない。 In the present embodiment, the air supply mechanism 23 operates in synchronization with the intermittent feeding operation of the transport belt 11, and during the transport operation of the transport belt 11, the belt feed assist mechanism 20 moves air toward the lower surface of the transport belt 11. Is supplied, and air is not supplied while the conveyance belt 11 is stopped and printing is performed by the printing mechanism 13. However, when the supplied air does not affect the printing on the fabric C by the printing mechanism 13, the air is directed toward the lower surface of the conveyor belt 11 by the belt feeding assist mechanism 20 even during the printing operation of the printing device 10. It may continue to be supplied. That is, the conveyor belt 11 carries out the intermittent feeding operation to convey the cloth C, and the belt feeding assist mechanism 20 is always in operation during the printing operation from the start to the end of the printing on the roll-shaped cloth C by the cloth printing apparatus 10. Therefore, the air may be continuously supplied toward the lower surface of the conveyor belt 11. In this case, it is not necessary to control the air supply mechanism 23 during the operation of the printing device 10.
　なお、ベルト送り支援機構２０は上記の構成に限定されず、搬送ベルト１１の荷重を支持して搬送ベルト１１の下面と支持台１４の間の摩擦力を低減することができればいずれの形態でもよい。例えば、支持台１４の幅方向の両側であって、支持台１４の上面と揃う高さ位置に空気噴射装置を配置し、搬送ベルトの搬送動作時に空気噴射装置により空気を噴射させて搬送ベルト１１を持ち上げて空隙を形成する空隙形成機構であってもよい。 The belt feed assist mechanism 20 is not limited to the above-described configuration, and may have any form as long as it can support the load of the conveyor belt 11 and reduce the frictional force between the lower surface of the conveyor belt 11 and the support base 14. .. For example, on both sides of the support base 14 in the width direction, the air injection device is arranged at a height position that is aligned with the upper surface of the support base 14, and the air is injected by the air injection device at the time of the conveyance operation of the conveyance belt to convey the belt 11. It may be a void-forming mechanism that lifts up to form a void.
　図５～図７は本発明の第２の実施形態の印刷装置１０を示す。本実施形態の印刷装置１０において、第１の実施形態と同一の構成については、対応する構成に同一の符号を付して詳細な説明は省略する。 5 to 7 show a printing device 10 according to the second embodiment of the present invention. In the printing apparatus 10 of the present embodiment, the same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
　本実施形態では、支持台１４は、支持板１４Ａ～１４Ｃの組１４ａと支持板１４Ｄ～１４Ｆとの組１４ｂとを搬送方向に間隔を開けて配置したものである。組１４ａと組１４ｂとは、それぞれ、第１の実施形態と同様の支持板１４Ａ～１４Ｆを搬送方向に３枚連続して配置することで構成されている。しかし、この構成に限定されず、各組の支持板１４Ａ～１４Ｆは１枚の平板から形成されていてもよく、任意の枚数の平板から形成されていてもよく、支持板１４Ａ～１４Ｆのサイズも任意である。 In the present embodiment, the support base 14 includes a set 14a of support plates 14A to 14C and a set 14b of support plates 14D to 14F, which are arranged at intervals in the transport direction. Each of the set 14a and the set 14b is configured by disposing three support plates 14A to 14F, which are the same as those in the first embodiment, continuously in the transport direction. However, the structure is not limited to this, and the support plates 14A to 14F of each set may be formed of one flat plate or an arbitrary number of flat plates. Is also optional.
　支持板の組１４ａ、１４ｂの間には、ベルト送り支援機構を構成する押上機構３０が配置されている。押上機構３０は、搬送ベルト１１を押し上げて搬送ベルト１１を支持台１４から離反させるものであり、図７に示すように、搬送ベルト１１の下面に当接して搬送ベルト１１を押し上げる押上部材３１と、押上部材３１の上端が支持台１４の上面に対して出没するように押上部材３１を昇降させる昇降機構３２とを備える。 A push-up mechanism 30 that constitutes a belt feed assist mechanism is arranged between the pair of support plates 14a and 14b. The push-up mechanism 30 pushes up the transport belt 11 and separates the transport belt 11 from the support base 14. As shown in FIG. 7, the push-up mechanism 30 contacts the lower surface of the transport belt 11 and pushes up the transport belt 11. An elevating mechanism 32 for elevating and lowering the push-up member 31 so that the upper end of the push-up member 31 is projected and retracted from the upper surface of the support base 14.
　押上部材３１は支持台１４の幅方向の長さと略同じ長さの２本の押上ローラ３１Ａ、３１Ａを備えている。各押上ローラ３１Ａ、３１Ａは搬送方向に直交する方向、すなわち布地Ｃの幅方向に沿って、搬送方向に間隔を開けて並べられている。各押上ローラ３１Ａ、３１Ａは内部にベアリング等を備え、回転軸３１ａに回転自由に支持されており、搬送ベルト１１の下面と接触して搬送ベルト１１の移動により回転する。なお、押上ローラ３１Ａ、３１Ａの数は、１本でもよく３本以上であってもよいが、搬送ベルト１１の移動時の搬送ベルト１１と押上ローラ３１Ａ、３１Ａとの間の摩擦力を低減する観点からは数が少ない方が好ましく、搬送ベルト１１を安定して持ち上げる観点からは数が多い方が好ましく、本実施形態では２本としている。 The push-up member 31 is provided with two push-up rollers 31A and 31A having substantially the same length as the width of the support base 14. The push-up rollers 31A, 31A are arranged at intervals in the carrying direction along the direction orthogonal to the carrying direction, that is, along the width direction of the cloth C. Each of the push-up rollers 31A, 31A has a bearing and the like inside, is rotatably supported by the rotating shaft 31a, and comes into contact with the lower surface of the conveyor belt 11 to rotate by the movement of the conveyor belt 11. The number of the push-up rollers 31A and 31A may be one or three or more, but the frictional force between the transport belt 11 and the push-up rollers 31A and 31A when the transport belt 11 is moved is reduced. From the viewpoint, the smaller number is preferable, and from the viewpoint of stably lifting the conveyor belt 11, the larger number is preferable, and in the present embodiment, the number is two.
　昇降機構３２は押上ローラ３１Ａ、３１Ａの長さ方向（布地の幅方向）の両端側にそれぞれ設けられ、図７に示すように、可動板３３と、フレーム１６や印刷装置１０の基台（図示せず）などに固定された一対のガイドフレーム３４、３４と、例えば油圧シリンダ３５からなるアクチュエータとを備えている。可動板３３は内面に軸支溝３３ａが形成されており、各押上ローラ３１Ａ、３１Ａの回転軸３１ａの両端が軸支溝３３ａに支持されている。可動板３３の長さ方向（搬送方向）の端部は、ガイドフレーム３４、３４に設けられたガイド溝３４ａにスライド自由に支持されている。油圧シリンダ３５は、シリンダ本体３５ａと、シリンダ本体３５ａに対して出没動作するロッド３５ｂを備え、ロッド３５ｂの先端が可動板３３の下面に接続されている。ロッド３５ｂの出没動作により、ガイドフレーム３４、３４に沿って可動板３３に取付けられた押上ローラ３１Ａ、３１Ａが昇降する。ロッド３５ｂがシリンダ本体３５ａに引き込まれた状態では、押上ローラ３１Ａ、３１Ａの上端は支持台１４の上面よりも下方に位置し、ロッド３５ｂがシリンダ本体３５ａから伸張した状態では、押上ローラ３１Ａ、３１Ａの上端は支持台１４の上面よりも上方に位置する。押上ローラ３１Ａ、３１Ａが搬送ベルト１１の下面に当接して搬送ベルト１１を押し上げた状態で、支持台１４の上面から押上ローラ３１Ａ、３１Ａの上端までの高さは、約５～１０ｍｍに設定されているがこれに限定されるものではない。 The elevating mechanisms 32 are provided at both ends of the push-up rollers 31A, 31A in the length direction (width direction of the cloth), and as shown in FIG. 7, the movable plate 33, the frame 16 and the base of the printing apparatus 10 (see FIG. A pair of guide frames 34, 34 fixed to (not shown) or the like, and an actuator including, for example, a hydraulic cylinder 35 are provided. A shaft support groove 33a is formed on the inner surface of the movable plate 33, and both ends of the rotating shaft 31a of each of the push-up rollers 31A and 31A are supported by the shaft support groove 33a. An end portion of the movable plate 33 in the length direction (conveyance direction) is slidably supported by a guide groove 34a provided in the guide frames 34, 34. The hydraulic cylinder 35 includes a cylinder body 35a and a rod 35b that moves in and out of the cylinder body 35a, and the tip of the rod 35b is connected to the lower surface of the movable plate 33. As the rod 35b moves in and out, the push-up rollers 31A and 31A attached to the movable plate 33 move up and down along the guide frames 34 and 34. When the rod 35b is pulled into the cylinder body 35a, the upper ends of the push-up rollers 31A and 31A are located below the upper surface of the support base 14, and when the rod 35b extends from the cylinder body 35a, the push-up rollers 31A and 31A are located. Is located above the upper surface of the support base 14. With the push-up rollers 31A, 31A contacting the lower surface of the conveyor belt 11 and pushing up the conveyor belt 11, the height from the upper surface of the support base 14 to the upper ends of the push-up rollers 31A, 31A is set to about 5 to 10 mm. However, the present invention is not limited to this.
　駆動ローラ１２ａ、１２ａを駆動する駆動源、印刷機構１３、昇降機構３２のアクチュエータ（油圧シリンダ３５）は、制御装置（図示せず）に接続されており、制御装置によりその動作が制御されている。 The drive source that drives the drive rollers 12a, 12a, the printing mechanism 13, and the actuator (hydraulic cylinder 35) of the lifting mechanism 32 are connected to a control device (not shown), and their operations are controlled by the control device. ..
　第２の実施形態の印刷装置１０の印刷動作について、第１の実施形態の印刷装置１０と異なる点を説明する。 Regarding the printing operation of the printing apparatus 10 of the second embodiment, the points different from the printing apparatus 10 of the first embodiment will be described.
　印刷動作において、搬送ベルト１１の搬送動作の直前の停止動作中に、昇降機構３２の油圧シリンダ３５のロッド３５ｂが伸張して可動板３３が上昇し、押上ローラ３１Ａ、３１Ａの上端が支持台１４の上面よりも上に持ち上げられ、搬送ベルト１１は支持台１４から離反する。押上ローラ３１Ａ、３１Ａの上昇により、搬送ベルト１１が支持台１４から持ち上げられて支持台１４に接触しない状態となる。この状態で、ベルト駆動機構１２により搬送ベルト１１が搬送動作され、所定の距離を移動するが、このとき、押上ローラ３１Ａ、３１Ａは搬送ベルト１１の移動に伴って回転する。この回転により押上ローラ３１Ａ、３１Ａと搬送ベルト１１との間の摩擦力が小さくなり、搬送ベルト１１が押上ローラ３１Ａ、３１Ａの影響を受けて伸縮するのを防いでいる。搬送ベルト１１が所定の距離を移動して停止動作をすると、油圧シリンダ３５のロッド３５ｂがシリンダ本体３５ａに引き込まれて可動板３３が下降し、押上ローラ３１Ａ、３１Ａは支持台１４の上面よりも下位置となる。これにより、搬送ベルト１１が支持台１４に降ろされ、支持台１４と接触した状態となる。この後、印刷機構１３により布地Ｃに印刷が施される。このように、搬送ベルト１１の搬送動作の間は、昇降機構３２により搬送ベルト１１が支持台１４から持ち上げられて搬送ベルト１１が支持台１４に接触しない状態となる。 In the printing operation, during the stop operation immediately before the conveyance operation of the conveyance belt 11, the rod 35b of the hydraulic cylinder 35 of the lifting mechanism 32 extends and the movable plate 33 rises, and the upper ends of the push-up rollers 31A and 31A are supported by the support base 14. The conveyor belt 11 is lifted above the upper surface of the conveyor belt 11 and is separated from the support base 14. Due to the lifting of the push-up rollers 31A and 31A, the conveyor belt 11 is lifted from the support base 14 and is not in contact with the support base 14. In this state, the conveyor belt 11 is conveyed by the belt drive mechanism 12 and moves a predetermined distance. At this time, the push-up rollers 31A and 31A rotate with the movement of the conveyor belt 11. This rotation reduces the frictional force between the push-up rollers 31A, 31A and the conveyor belt 11 and prevents the conveyor belt 11 from expanding and contracting under the influence of the push-up rollers 31A, 31A. When the conveyor belt 11 moves a predetermined distance and stops, the rod 35b of the hydraulic cylinder 35 is drawn into the cylinder body 35a, the movable plate 33 descends, and the push-up rollers 31A and 31A move above the upper surface of the support base 14. It is in the lower position. As a result, the conveyor belt 11 is lowered onto the support base 14 and comes into contact with the support base 14. After that, the printing mechanism 13 prints on the cloth C. In this way, during the transport operation of the transport belt 11, the transport belt 11 is lifted from the support base 14 by the elevating mechanism 32, and the transport belt 11 does not come into contact with the support base 14.
　上記の構成によれば、押上ローラ３１Ａ、３１Ａが搬送ベルト１１の間欠送り動作毎に搬送ベルト１１を持ち上げて支持台１４から離反させることで、搬送ベルト１１の移動時に搬送ベルト１１の下面と支持台１４の上面との間に摩擦力が生じないため、搬送ベルト１１の中央部に伸びが生じるのを防ぐことができ、搬送誤差を小さくすることができる。このように、本実施形態の印刷装置１０によれば、搬送ベルト１１の間欠送り動作を支援することができる。 According to the above configuration, the push-up rollers 31A, 31A lift the conveyor belt 11 and separate it from the support base 14 for each intermittent feeding operation of the conveyor belt 11, thereby supporting the lower surface of the conveyor belt 11 when the conveyor belt 11 moves. Since no frictional force is generated between the base 14 and the upper surface, it is possible to prevent the central portion of the conveyor belt 11 from being stretched, and to reduce the conveyance error. As described above, according to the printing apparatus 10 of the present embodiment, the intermittent feeding operation of the conveyor belt 11 can be supported.
　押上ローラ３１Ａ、３１Ａは搬送ベルト１１の移動に伴って回転せず、棒状部材であってもよい。この場合、ベルト駆動機構１２により搬送ベルト１１が搬送動作され、所定の距離を移動するとき、押上ローラ３１Ａ、３１Ａは搬送ベルト１１の下面と接触するが回転はしない。この場合であっても、従来技術に比べ、押上ローラ３１Ａ、３１Ａと搬送ベルト１１との間の摩擦力が小さくなる。 The push-up rollers 31A and 31A do not rotate with the movement of the conveyor belt 11 and may be rod-shaped members. In this case, when the conveyor belt 11 is conveyed by the belt driving mechanism 12 and moves a predetermined distance, the push-up rollers 31A and 31A contact the lower surface of the conveyor belt 11 but do not rotate. Even in this case, the frictional force between the push-up rollers 31A, 31A and the conveyor belt 11 becomes smaller than that in the conventional technique.
　また、昇降機構３２の構成は本実施形態に限られず、押上ローラ３１Ａ、３１Ａを持ち上げることができればいずれの構成であってもよい。例えば、図８に示すように、昇降機構３２がロッドレスシリンダ４０であってもよい。ロッドレスシリンダ４０は、例えば、フレーム１６や印刷装置１０の基台（図示せず）などに固定された上下位置の基部４０ａ、４０ａの間にシリンダチューブ４０ｂが配置されたものであり、シリンダチューブ４０ｂ内にはピストン（図示せず）が収容され、シリンダチューブ４０ｂの外周面に、スライド体４０ｃがシリンダチューブ４０ｂに沿ってスライド可能に設けられている。ピストンとスライド体４０ｃとは磁気結合力で一体に移動し、例えばエアによりピストンを移動させることにより、ピストンの移動にスライド体４０ｃが追従して移動する。 Further, the configuration of the elevating mechanism 32 is not limited to this embodiment, and may be any configuration as long as the push-up rollers 31A and 31A can be lifted. For example, as shown in FIG. 8, the lifting mechanism 32 may be a rodless cylinder 40. The rodless cylinder 40 is, for example, a cylinder tube 40b arranged between upper and lower base portions 40a, 40a fixed to a frame 16 or a base (not shown) of the printing apparatus 10. A piston (not shown) is housed in 40b, and a slide body 40c is provided on the outer peripheral surface of the cylinder tube 40b so as to be slidable along the cylinder tube 40b. The piston and the slide body 40c move integrally by a magnetic coupling force. For example, when the piston is moved by air, the slide body 40c follows the movement of the piston.
　１本の押上ローラ３１Ａにつき一対のロッドレスシリンダ４０を備え、この一対のロッドレスシリンダ４０を各押上ローラ３１Ａの両端側（布地Ｃの幅方向）に配置し、押上ローラ３１Ａ、３１Ａの回転軸３１ａの両端の先端部をそれぞれスライド体４０ｃに固定する。スライド体４０ｃが昇降することにより、押上ローラ３１Ａ、３１Ａは、その上端が支持台１４の上面に対して上方の位置と下方の位置との間となるように昇降移動する。なお、一対のロッドレスシリンダ４０のスライド体４０ｃにそれぞれ可動板を取付け、各可動板に２本の押上ローラ３１Ａ、３１Ａの回転軸３１ａの両端の先端部がそれぞれ固定され、一対のロッドレスシリンダ４０で２本の押上ローラ３１Ａ、３１Ａを同時に移動させてもよい。 A pair of rodless cylinders 40 are provided for each push-up roller 31A, and the pair of rodless cylinders 40 are arranged on both ends of each push-up roller 31A (in the width direction of the cloth C). The tip ends of both ends of 31a are fixed to the slide body 40c. As the slide body 40c moves up and down, the push-up rollers 31A and 31A move up and down such that the upper ends thereof are located between the upper position and the lower position with respect to the upper surface of the support base 14. A movable plate is attached to each of the slide bodies 40c of the pair of rodless cylinders 40, and the tip ends of both ends of the rotary shafts 31a of the two push-up rollers 31A and 31A are fixed to each movable plate. The two push-up rollers 31A and 31A may be moved simultaneously by 40.
　昇降機構３２は、図９に示すカム機構５０であってもよい。カム機構５０は、モータ（図示せず）の回転により回転する原動カムとしての回転体５１と、回転体５１の上側に配置された従動カムとしての棒状部材５２を有している。回転体５１は、中央部がモータの出力軸５１ｃに取付けられた円形の円盤部５１ａと、円盤部５１ａから外方に突出した突出部５１ｂとを有している。棒状部材５２の下端には、棒状部材５２と回転体５１との間の摩擦力の低減のために、回転体５１の回転によって回転自由なコロ５２ａが設けられ、棒状部材５２の上端部には押上ローラ３１Ａ、３１Ａの回転軸３１ａの先端が固定されている。モータの出力軸５１ｃの回転により、突出部５１ｂが上方向に向くと棒状部材５２が持ち上げられ、棒状部材５２に固定された押上ローラ３１Ａ、３１Ａが上昇する。突出部５１ｂが上方向以外の方向、例えば横方向や下方向に向くと、棒状部材５２と棒状部材５２に固定された押上ローラ３１Ａ、３１Ａが下降する。 The lifting mechanism 32 may be the cam mechanism 50 shown in FIG. The cam mechanism 50 has a rotating body 51 as a driving cam that is rotated by the rotation of a motor (not shown), and a rod-shaped member 52 as a driven cam arranged above the rotating body 51. The rotating body 51 has a circular disk portion 51a having a central portion attached to the output shaft 51c of the motor, and a protruding portion 51b protruding outward from the disk portion 51a. At the lower end of the rod-shaped member 52, a roller 52a that is rotatable by the rotation of the rotor 51 is provided to reduce the frictional force between the rod-shaped member 52 and the rotor 51, and the upper end of the rod-shaped member 52 is provided at the upper end. The tips of the rotary shafts 31a of the push-up rollers 31A and 31A are fixed. When the protrusion 51b faces upward due to the rotation of the output shaft 51c of the motor, the rod-shaped member 52 is lifted and the push-up rollers 31A and 31A fixed to the rod-shaped member 52 rise. When the projecting portion 51b faces a direction other than the upward direction, for example, the lateral direction or the downward direction, the rod-shaped member 52 and the push-up rollers 31A and 31A fixed to the rod-shaped member 52 descend.
　また、押上部材３１は押上ローラ３１Ａ、３１Ａに限定されず、搬送ベルト１１の下面に当接して搬送ベルト１１を押し上げて搬送ベルト１１が支持台１４の上面に接触しない状態とすることが可能であればいずれの形態であってもよい。例えば、押上部材３１は、基部に回転自由に支持された球状体であってもよく、複数の球状体を備えていてもよい。 Further, the push-up member 31 is not limited to the push-up rollers 31A and 31A, and can be brought into contact with the lower surface of the conveyor belt 11 to push up the conveyor belt 11 so that the conveyor belt 11 does not contact the upper surface of the support base 14. Any form may be used as long as it is provided. For example, the push-up member 31 may be a spherical body rotatably supported by the base portion, or may include a plurality of spherical bodies.
　さらに、図５に示す実施形態では、２組の支持板の組１４ａ、１４ｂの間に押上機構３０を配置しているが、押上機構３０の配置位置はこれに限定されず、例えば、図１０に示すように、支持台１４が３つの支持板の組１４ａ～１４ｃを備え、各支持板の組１４ａ～１４ｃの間にそれぞれ押上機構３０を配置してもよい。図１０においては、支持板１４Ａ、１４Ｂの組１４ａと支持板１４Ｃ、１４Ｄ、１４Ｅの組１４ｂとの間、支持板１４Ｃ、１４Ｄ、１４Ｅの組１４ｂと支持板１４Ｆ、１４Ｇの組１４ｃとの間にそれぞれ押上機構３０が配置されている。また、押上機構３０を支持台１４の搬送方向の両端側に配置してもよい。 Furthermore, in the embodiment shown in FIG. 5, the push-up mechanism 30 is arranged between the two pairs of support plates 14a and 14b, but the arrangement position of the push-up mechanism 30 is not limited to this, and for example, FIG. As shown in FIG. 3, the support base 14 may include three sets 14a to 14c of support plates, and the push-up mechanism 30 may be arranged between the sets 14a to 14c of support plates. In FIG. 10, between the set 14a of the support plates 14A, 14B and the set 14b of the support plates 14C, 14D, 14E, between the set 14b of the support plates 14C, 14D, 14E and the set 14c of the support plates 14F, 14G. A push-up mechanism 30 is arranged in each of the above. Further, the push-up mechanism 30 may be arranged on both ends of the support base 14 in the transport direction.
　以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。 Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
１０　印刷装置
１１　搬送ベルト
１２　ベルト駆動機構
１３　印刷機構
１４　支持台
２０　ベルト送り支援機構
２１　空気孔
２２　ダクト
２３　空気供給機構
３０　押上機構
３１　押上部材
３１Ａ、３１Ａ　押上ローラ
３２　昇降機構
３３　可動板
３５　油圧シリンダ
Ｃ　布地（印刷対象物） 10 Printing Device 11 Conveyor Belt 12 Belt Driving Mechanism 13 Printing Mechanism 14 Supporting Stand 20 Belt Feeding Support Mechanism 21 Air Hole 22 Duct 23 Air Supply Mechanism 30 Push-up Mechanism 31 Push- up Members 31A, 31A Push-up Roller 32 Lifting Mechanism 33 Movable Plate 35 Hydraulic Cylinder C fabric (print target)

Claims (7)

  1. 　印刷対象物を下方より支持して水平方向へ搬送する搬送ベルトと、
    　前記搬送ベルトを間欠送り動作させるベルト駆動機構と、
    　前記搬送ベルトの走行経路上に配置され、印刷対象物への印刷を施す印刷機構と、
    　前記印刷機構による印刷時に前記搬送ベルトを下方より支持する支持台と、
    　前記ベルト駆動機構による前記搬送ベルトの間欠送り動作を支援するベルト送り支援機構とを有する印刷装置。     A conveyor belt that supports the object to be printed from below and conveys it in the horizontal direction,
    A belt drive mechanism for intermittently feeding the conveyor belt,
    A printing mechanism that is arranged on the traveling path of the conveyor belt and prints on a printing object,
    A support base that supports the conveyor belt from below during printing by the printing mechanism,
    A belt feeding assist mechanism that assists the intermittent feeding operation of the conveyor belt by the belt driving mechanism.
  2. 　前記ベルト送り支援機構は、前記ベルト駆動機構により前記搬送ベルトの間欠送り動作が行われる毎に前記間欠送り動作を支援する請求項１に記載の印刷装置。 The printing apparatus according to claim 1, wherein the belt feeding support mechanism assists the intermittent feeding operation every time the belt driving mechanism performs the intermittent feeding operation of the conveyor belt.
  3. 　前記ベルト送り支援機構は、前記搬送ベルトの下面と前記支持台との間に空隙を形成する空隙形成機構である請求項１または２に記載の印刷装置。 The printing apparatus according to claim 1 or 2, wherein the belt feed assist mechanism is a gap forming mechanism that forms a gap between the lower surface of the transport belt and the support base.
  4. 　前記ベルト送り支援機構は、前記支持台に形成された空気孔と、前記空気孔から前記搬送ベルトの下面に向けて送り込む空気を供給する空気供給機構とを有する請求項１から３のいずれかに記載の印刷装置。 The belt feed assist mechanism has an air hole formed in the support base, and an air supply mechanism that supplies air to be sent from the air hole toward the lower surface of the conveyor belt. The printing device described.
  5. 　前記ベルト送り支援機構は、前記搬送ベルトを押し上げて前記搬送ベルトを前記支持台から離反させる押上機構である請求項１または２に記載の印刷装置。 The printing apparatus according to claim 1 or 2, wherein the belt feed assist mechanism is a push-up mechanism that pushes up the conveyor belt and separates the conveyor belt from the support base.
  6. 　前記押上機構は、前記搬送ベルトの下面に当接して前記搬送ベルトを押し上げる押上部材と、前記押上部材の上端が前記支持台の上面に対して出没するように前記押上部材を昇降させる昇降機構とを備える請求項５に記載の印刷装置。 The push-up mechanism includes a push-up member that abuts a lower surface of the transport belt to push up the transport belt, and an elevating mechanism that moves the push-up member up and down so that an upper end of the push-up member is projected and retracted from an upper surface of the support base. The printing apparatus according to claim 5, further comprising:
  7. 　前記押上部材は、前記搬送ベルトの移動とともに回転する押上ローラである請求項６に記載の印刷装置。 The printing apparatus according to claim 6, wherein the push-up member is a push-up roller that rotates with the movement of the transport belt.
PCT/JP2020/004931 2019-02-19 2020-02-07 Printing device WO2020170868A1 (en)

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JPH0485465U (en) * 1990-11-30 1992-07-24
JP2017144671A (en) * 2016-02-19 2017-08-24 セイコーエプソン株式会社 Recording device
JP2017144680A (en) * 2016-02-19 2017-08-24 セイコーエプソン株式会社 Recording device

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Publication number Priority date Publication date Assignee Title
CN2133442Y (en) * 1992-08-17 1993-05-19 廖敏三 Fully-automatic curved surface printer
PT1591257T (en) * 2004-04-29 2018-12-04 Xennia Holland B V Endless conveyor belt in an apparatus for printing a textile web
JP5196918B2 (en) * 2007-08-30 2013-05-15 株式会社ミマキエンジニアリング Manufacturing method of printing apparatus
JP5116542B2 (en) * 2008-04-11 2013-01-09 東伸工業株式会社 Inkjet printing apparatus for fabric
CN103568476B (en) * 2013-11-13 2015-06-17 济南鼎鑫机械制造有限公司 Woven bag double-face rotary press

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JPH0485465U (en) * 1990-11-30 1992-07-24
JP2017144671A (en) * 2016-02-19 2017-08-24 セイコーエプソン株式会社 Recording device
JP2017144680A (en) * 2016-02-19 2017-08-24 セイコーエプソン株式会社 Recording device

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CN113396061B (en) 2022-11-25
EP3928984A4 (en) 2022-11-16

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