WO2018045776A1 - 一种数码印刷设备 - Google Patents

一种数码印刷设备 Download PDF

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Publication number
WO2018045776A1
WO2018045776A1 PCT/CN2017/085330 CN2017085330W WO2018045776A1 WO 2018045776 A1 WO2018045776 A1 WO 2018045776A1 CN 2017085330 W CN2017085330 W CN 2017085330W WO 2018045776 A1 WO2018045776 A1 WO 2018045776A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust removing
blowing
suction
digital printing
adsorption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/085330
Other languages
English (en)
French (fr)
Inventor
杨付伟
赵义发
李继洲
杨琴
张建强
陈婷
田洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Handway Industrial Digital Equipment Co Ltd
Original Assignee
Shenzhen Handway Industrial Digital Equipment Co Ltd
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 Shenzhen Handway Industrial Digital Equipment Co Ltd filed Critical Shenzhen Handway Industrial Digital Equipment Co Ltd
Priority to JP2019514165A priority Critical patent/JP6706716B2/ja
Priority to ES17847949T priority patent/ES2879683T3/es
Priority to US16/305,961 priority patent/US10759197B2/en
Priority to EP17847949.9A priority patent/EP3511169B1/en
Publication of WO2018045776A1 publication Critical patent/WO2018045776A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • 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
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/08—Conveyor bands 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • B41J2/16541—Means to remove deposits from wipers or scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/17—Cleaning arrangements
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism

Definitions

  • the present invention relates to the field of printing technology, and more particularly to a digital printing apparatus.
  • the plate printing needs to print more than two colors, and the color registration accuracy between the two rollers is relatively poor.
  • the damper can only be roughly adapted to the width of the plate by opening and closing, and some suction is still present on both sides of the plate. Air leakage from the air hole causes a problem of poor suction adsorption.
  • the object of the present invention is to provide a digital printing device, which solves the problem that the prior art plate negative pressure adsorption conveying has poor conveying precision, high requirements on the plate, and the openable door on the negative pressure suction box cannot be accurately adjusted to the plate.
  • the same width results in a problem of poor vacuum adsorption.
  • a digital printing device comprising an adsorption conveying device, the adsorption conveying device comprising a conveying belt for conveying a sheet, which is provided in a space defined by the conveyor belt
  • Negative pressure causes at least one first suction box to be adsorbed on the conveyor belt during transportation, and a plurality of first suction holes communicating with the first suction box are opened on the conveyor belt
  • At least one side of the first suction box is provided with a movable door that moves in a direction perpendicular to the conveying direction to cause the first suction box to cooperate with the plate to maintain a negative pressure state.
  • the movable door is provided with a first nut, the first nut is sleeved on the first screw and moves with the rotation of the first screw, the first The lead screw is driven by the first drive.
  • the first driver drives the first screw to rotate by a transmission mechanism
  • the transmission mechanism includes a transmission shaft that is rotated by the first driver, and each of the first a connecting rod connecting the screw rods and a plurality of first bevel gears and second bevel gears meshed with each other, each of the second bevel gears being connected to each of the connecting rods one by one, each The first bevel gear is coupled to the transmission shaft, and the transmission shaft and the connecting rod are interlocked with each other by the first bevel gear and the second bevel gear.
  • a feeding device is disposed at the conveying start end of the adsorption conveying device, the feeding device includes an adsorption panel and a plurality of feeding wheels, and the second suction hole is opened on the adsorption panel.
  • the feed wheel is disposed at a position corresponding to the second air suction hole, and a movable cover area for covering the area is installed above the second air suction hole of the at least one side of the adsorption panel. Windshield body.
  • the windshield cover body includes a fixed end portion, a sliding end portion, and a telescopic portion, the fixed end portion being fixed on one side of the adsorption panel, and the telescopic portion is connected to the Between the fixed end portion and the sliding end portion, the sliding end portion moves in a direction perpendicular to the feeding direction and drives the expansion and contraction portion to be elongated and shortened, and the sliding end portion causes the expansion and contraction portion during movement Covering the area on one side of the adsorption panel.
  • a dust removing device is disposed above the conveying start end of the adsorption conveying device, and the dust removing device includes a first dust removing portion for removing floating dust on the surface of the sheet material, and is used for loosening the surface of the sheet material. a dust blowing portion and a second dust removing portion for removing dust from the surface of the sheet loosened by the blowing portion.
  • the first dust removing portion, the blowing portion, and the second dust removing portion are sequentially disposed along a conveying direction of the sheet material;
  • the first dust removing portion includes a first dust removing brush and for fixing the first a fixing member of the dust removing brush;
  • the second dust removing portion includes an air exhausting pipe, and an air suction tube is connected to a bottom end of the air exhausting pipe, the bottom end of the air blowing cylinder is provided with an air exhausting port, and a fourth side is disposed around the air guiding port a second dust removing brush;
  • the blowing portion includes a blowing duct, and a blowing tube is connected to a bottom end of the blowing duct, the bottom end of the blowing tube is provided with a blowing port and the blowing port is directed toward the second dust removing brush
  • a fixing member of the first dust removing portion is mounted on one side of the blowing duct, and the second dust removing portion is mounted on a side of the blow
  • each of the printing units is provided with a nozzle maintenance device, and the nozzle maintenance device includes a moisturizing component; And including a movable body movable between the first position and the second position, wherein the movable body is provided with a maintenance cavity for accommodating a nozzle for moisturizing the printing unit, and the maintenance cavity is provided with
  • Each of the heads of the printing unit corresponds to a blade for scraping off the ink of the head; the head of the printing unit is disposed above the first position.
  • the cleaning unit is provided above the second position for cleaning a cleaning assembly for the blade, the cleaning assembly including a fixing body, and a nozzle for spraying the cleaning liquid corresponding to each of the blades in a one-to-one direction on a side of the fixing body facing the second position, A liquid tank for holding the cleaning liquid in communication with each of the nozzles is disposed on a side of the fixing body facing away from the nozzle; a seal of the maintenance chamber of the moisturizing assembly is provided.
  • one end of the blade is formed with a curved blade;
  • the nozzle includes a main body on which a receiving groove for accommodating the blade is provided, and a groove in the receiving groove At least one liquid ejection hole is provided at the bottom.
  • the digital printing device embodying the invention has the following beneficial effects: the digital printing device of the invention uses the conveyor belt to transport the plate during the printing process, has no problem of poor color registration accuracy, improves the printing effect, and is provided in the first suction box.
  • the movable movable door precisely fits the width of the first suction box to the width of the plate to adapt to different specifications of the plate to be transported in the corresponding negative pressure adsorption zone, and there is no air leakage phenomenon, and the negative pressure adsorption effect is good.
  • FIG. 1 is a schematic structural view of a digital printing apparatus of the present invention
  • FIG. 2 is a schematic structural view showing a part of a structure of a digital printing apparatus of the present invention
  • Figure 3 is a schematic structural view of an adsorption conveying device in the present invention.
  • Figure 4 is an enlarged schematic view showing a partial structure of the adsorption conveying device of the present invention.
  • Figure 5 is a top plan view of the adsorption transport device of the present invention.
  • Figure 6 is a schematic structural view showing a combined structure of a feeding device and a dust removing device in the present invention
  • Figure 7 is a top plan view of the feeding device of the present invention.
  • Figure 8 is a side elevational view of the feeding device of the present invention.
  • Figure 9 is a front elevational view showing the dust removing device of the present invention.
  • Figure 10 is a side elevational view of the dust removing device of the present invention.
  • Figure 11 is a schematic structural view of the nozzle maintenance device in the first state of the present invention.
  • Figure 12 is a schematic view showing the structure of the nozzle maintenance device in the second state of the present invention.
  • Figure 13 is a schematic view showing the structure of a nozzle of the head maintenance device of the present invention.
  • the digital printing apparatus includes an adsorption conveying device 1, a feeding device 2, a dust removing device 3, a printing unit 4, and a head maintenance device 5 disposed on the printing unit 4.
  • the feeding device 2 is installed at the conveying start end of the adsorption conveying device 1
  • the dust removing device 3 is disposed above the conveying start end of the adsorption conveying device 1
  • at least one printing unit is disposed above the conveyor belt
  • the nozzle maintenance device and each printing device Units are configured one by one.
  • the printing unit may be arranged in plurality and arranged in the conveying direction, and the printing unit may also be one.
  • the adsorption conveying device 1 includes a conveyor belt 11 for conveying sheets, and drives the transmission.
  • the main drive roller 12 that moves the belt 11 moves, the driven drive roller 13 that rotates as the conveyor belt 11 moves, and a second actuator (not shown) that drives the main drive roller 12 to rotate.
  • the second driver may be a motor or a motor, and may be directly connected to the main drive roller 12 or may be connected to the main drive roller 12 via a transmission.
  • At least one negative pressure first suction box 14 which is adsorbed on the conveyor belt 11 by the negative pressure during the conveying process is disposed in the space defined by the conveyor belt 11, on the conveyor belt 11.
  • a plurality of first air suction holes (not shown) communicating with the negative suction first suction box 14 are provided, and at least one side of the negative pressure first suction box 14 is disposed to move in a direction perpendicular to the conveying direction.
  • the negative pressure first suction box 14 is engaged with the plate to maintain the movable door 15 in a negative pressure state.
  • the first suction device 14 (not shown) is mounted on the first suction box 14 and is vacuumed by the first vacuum device to form a negative pressure.
  • the first suction device 14 and the first vacuum device can directly Connected, it can also be connected to the first vacuuming device through the suction duct 16.
  • a vent hole 141 communicating with the first air suction hole is opened at a top end of the negative suction first suction box 14.
  • the number of negative pressure first suction boxes 14 is plural and arranged in order along the conveying direction, and each negative pressure first suction box 14 is located on both sides of the conveyor belt 11.
  • the side wall is set as the movable door 15, and each movable door 15 is provided with a first nut 18, and the first nut 18 is sleeved on the first screw rod 19 and moves with the rotation of the first screw rod 19, the first thread
  • the rod 19 is driven by the first driver 20.
  • the first driver 20 can be a motor or a motor.
  • the first nut 18 on the two opposite movable doors 15 of the same negative pressure first suction box 14 is sleeved on the same first screw rod 19.
  • the two ends of the first screw rod 19 are respectively formed with a positive thread segment and a reverse thread segment, and the two adjacent first screw rods are configured as follows: the A end of the first first screw rod forms a positive thread segment, and the phase The A end of the adjacent second first screw rod forms a reverse thread segment; the B end of the first first screw rod forms a reverse thread segment, adjacent The B end of the second first lead rod forms a positively threaded section.
  • the first screw rod 19 is rotated, the first nut 18 at both ends of the first screw rod 19 will move relative to each other or move away from each other at the same time, thereby driving the two opposite movable doors 15 on the first suction box 14 of the same negative pressure simultaneously. Move relative or move away from each other.
  • the first screw rod 19 is disposed perpendicular to the conveying direction of the conveyor belt 11, and the first nut 18 drives the movable door 15 to move along the length direction of the first screw rod 19, and each of the negative pressure first suction box 14 and the first wire
  • the rods 19 are arranged one by one.
  • the first driver 20 drives each of the first screws 19 to rotate by the transmission mechanism 10.
  • the transmission mechanism 10 includes a transmission shaft 101 driven by the first driver 20, a connecting rod 102 connected in one-to-one correspondence with each of the first screws 19, and a plurality of first bevel gears 103 and second bevel gears 104 coupled to each other.
  • Each of the second bevel gears 104 is connected to each of the connecting rods 102 one by one.
  • Each of the first bevel gears 103 is coupled to the transmission shaft 101, and the first bevel gear 103 is passed between the transmission shaft 101 and the connecting rod 102.
  • the second bevel gears 104 are interlocked with each other, wherein the connecting rod 102 and the first screw rod 19 are connected by a coupling 105.
  • the transmission shaft 101 is extended along the conveying direction of the conveyor belt 11, and the first bevel gear 103 and the second bevel gear 104 are vertically meshed with each other.
  • the first driver 20 When the width of the plate is smaller than the width of the conveyor belt 11, the first driver 20 is activated to drive the transmission shaft 101 to rotate, and the transmission shaft 101 drives each of the connecting rods 102 to rotate through the first bevel gear 103 and the second bevel gear 104, thereby driving the first
  • the screw 19 rotates, and the first nut 18 at both ends of the first screw 19 drives the movable door 15 to move, so that the distance between the movable doors 15 is substantially the same as the width of the plate, and the top and bottom of the first suction box 14 are under negative pressure.
  • the space formed by the two movable doors 15 is located just below the plate. When the vacuum is started, the space can form an approximate vacuum state, so that the plate maintains the negative pressure adsorption state.
  • the number of negative pressure first suction boxes 14 is one, and the whole is placed on the conveyor belt 11 Within the restricted space.
  • the number of the first screw rods 19 is also one, and both ends are respectively formed with a positive thread segment and a reverse thread segment.
  • each negative pressure first suction box 14 on one side of the conveyor belt 11 is set as the movable door 15, and the side wall of the other side is fixedly connected to the negative pressure first suction box 14. .
  • the first lead screw 19 is formed with a threaded section at an end close to the movable door 15.
  • the adjacent two first screw rods 19 have the following configuration: the first end of the first first screw rod forms a positive thread segment, and the adjacent second first portion The A end of the lead rod forms a reverse threaded section.
  • the sheet When the width of the sheet is smaller than the width of the conveyor belt 11, the sheet is placed near one side edge of the conveyor belt 11, and the movable door 15 is designed to be located on the other side of the conveyor belt 11, and the first driver 20 is activated to drive the transmission shaft 101 to rotate.
  • the shaft 101 drives each connecting rod 102 to rotate by the first bevel gear 103 and the second bevel gear 104, thereby driving the first screw rod 19 to rotate, and the first nut 18 on the first screw rod 19 drives the movable door 15 to move, so that the movement
  • the distance between the side wall of the door 15 opposite to the negative suction first suction box 14 is substantially the same as the width of the sheet, and the space formed by the top, bottom, side walls and a movable door 15 of the first suction box 14 is located at exactly Below the sheet, when vacuuming begins, the space can form an approximately vacuum state, maintaining the sheet under negative pressure adsorption.
  • the first screw 20 can be directly driven by the first driver 20 without the transmission mechanism 10.
  • each of the first screws 19 is configured.
  • a movable movable door is provided in the first suction box to realize the stepless adjustment, so that the width of the first suction box is The width of the plate is precisely matched to accommodate the different specifications of the plate in the corresponding negative pressure adsorption zone, there will be no air leakage, and the negative pressure adsorption effect is good.
  • the feeding device 2 includes an adsorption panel 21 and a plurality of feeding wheels 22, and the adsorption panel 21 is provided with a second air suction hole 23 for adsorbing the plate on the adsorption panel 21 by a negative pressure, and the feeding wheel 22 It is disposed at a position corresponding to the second air suction hole 23, and specifically, a gap exists between the feed wheel 22 and the hole wall corresponding to the second air suction hole 23.
  • a second suction box 24 for vacuum suction assembled with the adsorption panel 21 is disposed below the adsorption panel 21, and a second vacuuming device (not shown) is connected to the second suction box 24 to make the second A negative pressure is formed in the suction box 24.
  • the plurality of feed wheels 22 are arranged in a plurality of rows on the adsorption panel 21 in the feed direction, more preferably, the adjacent two rows of feed wheels 22 are staggered, and in other embodiments, the feed wheels 22 are also freely distributed.
  • Each row of feed wheels 22 is rotated by a roller shaft (not shown), wherein the feed wheel 22 is sleeved on the roller shaft, the roller shaft is driven to rotate by the third driver 25, and the third driver 25 can be a motor or a servo. Motor.
  • a windshield cover 26 for covering the side region second suction holes 23 to maintain the sheet material in a negative pressure adsorption state is attached above the second suction holes 23 in the region of at least one side of the adsorption panel 21.
  • the number of the windshield body 26 may be one.
  • the plate covers the second air suction hole 23 of the area of the suction panel 21, and the windshield body 26 is disposed on the other side of the adsorption panel 21 and covers the side area.
  • the windshield cover 26 includes a fixed end portion 261, a sliding end portion 262 and a telescopic portion 263.
  • the fixed end portion 261 is fixed on one side of the adsorption panel 21, and the telescopic portion 263 is connected to the fixed end portion 261.
  • the sliding end portion 262 moves in a direction perpendicular to the feeding direction and drives the expansion-contraction portion 263 to be elongated and shortened, and the sliding end portion 262 covers the side of the adsorption panel 21 with the expansion-contraction portion 263 during movement.
  • the sliding end portion 262 is provided An upright baffle 262a or a handle or the like is placed. The expansion and contraction portion 263 is folded and stretched, and the sliding end portion 262 is manually moved.
  • the telescoping portion 263 includes a plurality of plates that are connected to each other in a staggered manner. Each of the two adjacent plates is relatively movable, and the sliding end portion 262 is also manually moved.
  • the sliding end portion 262 is provided with a second nut, the second nut is sleeved on the second screw rod and moves with the rotation of the second screw rod, and the second screw rod is driven by the fourth driver or Manually driven, the second screw extends in a direction perpendicular to the conveying direction of the sheet, that is, the length direction is the same as the direction perpendicular to the conveying direction of the sheet.
  • the fourth driver can be a motor or a motor.
  • the thread directions of the second nuts on the sliding end portions 262 of the two windshield bodies 26 are opposite, and They are all sleeved on the same second screw rod, so that the sliding end portions 262 move toward each other at the same time or at the same time.
  • the two ends of the same second lead screw may respectively form a positive thread segment and a reverse thread segment, so that the sliding end portions 262 move toward each other at the same time or at the same time.
  • the windshield body 26 is a door body movable in a direction perpendicular to the feeding direction, that is, a common sliding door-like door body, and the windshield cover body 26 covers the adsorption panel during the moving process.
  • the second suction hole in the area on the 21 side.
  • the width of the sheet to be printed can be precisely adapted to completely cover the suction hole not covered by the sheet, thereby maintaining better Negative pressure adsorption effect
  • the dust removing device 3 includes a first dust removing portion 31 for removing floating dust on the surface of the sheet material, a blowing portion 32 for loosening the surface of the sheet material to bind the dust, and a sheet for removing the looseness by the blowing portion 32.
  • the second dust removing portion 33 is adhered to the surface.
  • the first dust removing portion 31, blowing The air portion 32 and the second dust removing portion 33 are sequentially disposed in the conveying direction of the sheet material.
  • the blowing portion 32, the second dust removing portion 33, and the first dust removing portion 31 may be sequentially disposed in the conveying direction.
  • the first dust removing portion 31 includes a first dust removing brush 311 and a fixing member 312 for fixing the first dust removing brush 311.
  • the second dust removing portion 33 includes an air exhausting duct 331, and an air blowing cylinder 332 is connected to the lower end of the air exhausting duct 331.
  • the bottom end of the air outlet 333 is provided with a second dust removing brush 334;
  • the blowing portion 32 includes a blowing duct 321 , and the lower end of the blowing duct 321 is connected with a blowing cylinder 322 , and the lower end of the blowing cylinder 322 is opened
  • the air outlet 323 and the air outlet 323 are blown toward the side where the second dust removing brush 334 is located;
  • the fixing member 312 of the first dust removing portion 31 is mounted on one side of the lower end of the air blowing duct 321, and the second dust removing portion 33 is mounted on the blowing portion 32 away from the first portion.
  • a support portion 34 for supporting the plate material is disposed below the first dust removing portion 31, the second dust removing portion 33, and the blowing portion 32.
  • the support portion 34 is located between the suction panel 21 of the feeding device 2 and the conveyor belt 11 of the adsorption conveying device 1.
  • the end of the first dust removing brush 311 and the end of the second dust removing brush 334 are respectively maintained at a predetermined distance from the supporting portion 34, which is equal to the thickness of the sheet material being conveyed or smaller than the thickness of the sheet material being conveyed.
  • the blowing duct 321 includes a blowing pipe 321a and a blowing beam 321b that communicate with each other.
  • the blowing pipe 321a and the blowing beam 321b are perpendicular to each other, the top end of the blowing pipe 321a is fixed by the fixing portion 35, and the blowing beam 321b is connected to the lower end of the blowing pipe 321a, and the blowing pipe 321a It is connected to a gas generating device (not shown), and a gas having a certain pressure is output through the gas generating device.
  • the blowing pipe 321a is erected on the blowing beam 321b, and the longitudinal direction of the blowing beam 321b extends in the vertical direction of the feeding direction, and one or more blowing pipes 321a can be erected on the blowing beam 321b.
  • the blower 322 is connected to the lower end of the blowing beam 321b near the second dust removing portion 33 and communicates with the blowing beam 321b.
  • the side of the blowing beam 321b facing away from the second dust removing portion 33 passes through the fixing member 312 and the first dust removing device.
  • the brush 311 is connected to each other.
  • the first dust removing brush 311 includes two rows of brushes and is respectively fixed to two sides of the fixing member 312, and the length of the first dust removing brush 311 is substantially the same as the length of the blowing beam 321b. In other embodiments, the first dust removing brush 311 may also include only one brush.
  • the fixing member 312 is provided with a plurality of elongated slots (not shown). The fixing member 312 can be fixed by a screw passing through the elongated slot. Since the elongated slot is provided, the fixing member 312 can be moved up and down when necessary. Further, the distance between the end of the first dust removing brush 311 and the support portion 34 is adjusted to accommodate plates of different thicknesses.
  • the blower cylinder 322 is gradually narrowed from the top to the bottom to the air outlet 323, which facilitates the airflow to be ejected at a faster speed, enhancing the strength of the blown air stream.
  • the air blowing cylinder 322 includes an upper air knife 322a and a lower air knife 322b.
  • the upper air knife 322a is provided with a plurality of elongated slots (not shown), and the upper air knife 322a is fixed by a long slotted screw, and the elongated slot can be passed through when needed.
  • the wind knife 322a is moved up and down so that the size of the air outlet 323 can be adjusted.
  • the exhaust duct 331 of the second dust removing portion 33 includes an air exhausting pipe 331a and a draft air beam 331b that communicate with each other.
  • the top end of the air exhausting beam 331b is fixed by the fixing portion 35, and the bottom end of the air exhausting beam 331b is connected to the top end of the air exhausting pipe 331a, and the air is exhausted.
  • the top end of the cylinder 332 is connected to the bottom end of the draft pipe 331a and communicates with the exhaust pipe 331a.
  • the exhaust beam 331b and the air exhaust pipe 331a are perpendicular to each other, that is, the air exhaust pipe 331a is erected below the air exhaust beam 331b, and one or a plurality of air exhaust pipes 331a may be erected below the air exhaust beam 331b.
  • the longitudinal direction of the exhaust beam 331b extends in the vertical direction of the feeding direction, that is, the same as the longitudinal direction of the blowing beam 321b.
  • the air extracting cylinder 332 has a substantially funnel shape, and the second dust removing brush 334 includes two brush brushes and is respectively disposed at two sides of the air extracting opening 333 at the bottom end of the air extracting cylinder 332. In other embodiments, the second dusting brush 334 may also include only one brush.
  • the exhaust beam 331b is connected to an air suction device (not shown), and the air suction device may be an air pump or a blower.
  • the length of the second dust removing brush 334 is substantially the same as the length of the air
  • the sheet is conveyed onto the support portion 34, and the surface to be printed of the sheet first comes into contact with the end of the first dust removing brush 311 of the first dust removing portion 31, since the distance between the end of the first dust removing brush 311 and the supporting portion 34 is equal to Or less than the thickness of the sheet, the end of the first dust removing brush 311 can sweep away the dust and paper dust on the surface to be printed; the sheet continues to move into the area of the blowing portion 32, and the airflow is ejected from the air outlet 323, and the surface to be printed can be printed.
  • the adhered dust is loosened; the sheet continues to move into the area where the second dust removing portion 33 is located, the distance between the end of the second dust removing brush 334 and the supporting portion 34 is equal to or smaller than the thickness of the sheet, and the second dust removing brush 334 can be swept away.
  • the dust that has been blown loosely is sucked away by the blower 332, the exhaust pipe 331a, and the exhaust beam 331b.
  • the first dust removing portion 31 and the second dust removing portion 33 are successively dedusted, and the surface to be treated of the sheet is subjected to dust removal twice, which can meet the requirements for high dust removing effect.
  • the nozzle maintenance device 5 includes a moisturizing assembly 51 including a movable body 511 movable between a first position 100 and a second position 200, and the movable body 511 is provided with slide rails at both ends thereof. (not shown in the figure) and the driving member 512, the movable body 511 has a slider (not shown) moving along the sliding rail, and the driving member 512 drives the slider to move, and the moving body 511 drives the movable body 511 along the sliding rail.
  • the drive member 512 can be a cylinder or a hydraulic cylinder or the like.
  • the movable body 511 can also be moved by the motor with the belt drive or the nut screw drive.
  • a maintenance chamber 513 for accommodating the nozzle of the moisturizing printing unit 4 is disposed on the movable body 511.
  • the maintenance chamber 513 is provided with a moisturizing liquid, and the maintenance chamber 513 is provided with a one-to-one correspondence with each nozzle of the printing unit 4.
  • the blade 514 for scraping the nozzle ink; the head of the printing unit 4 is disposed above the first position 100.
  • the blade 514 has a blade for scraping the head ink to be formed with a blade slightly curved obliquely upward (not shown).
  • a cleaning assembly 52 for cleaning the wiper 514 is provided above the second position 200.
  • the cleaning assembly 52 includes a fixing body 521, and a nozzle 522 for spraying the cleaning liquid corresponding to each of the blades 514 is provided on a side of the fixing body 521 facing the second position 200, when the movable body 511 moves to the second At position 200, substantially nozzle 522 is located directly above blade 514.
  • a liquid tank 523 for holding the cleaning liquid in communication with each of the nozzles 522 is opened.
  • each of the nozzles 522 includes a main body 522a.
  • the main body 522a is provided with a receiving groove 522b for receiving the blade of the blade 514, and at least one liquid discharging hole 522c is opened at the bottom of the receiving groove 522b.
  • a liquid discharge hole 522c is opened in the bottom of the groove of the accommodating groove 522b, and a plurality of liquid discharge holes 522c may be formed.
  • the receiving groove 522b is not provided in the main body 522a of the nozzle 522, and the liquid discharging hole 522c is directly provided in the main body 522a.
  • the cleaning liquid flows from the liquid tank 523 to each of the nozzles 522, and is ejected through the liquid ejecting holes 522c to clean the blade 514.
  • the edge of the maintenance chamber 513 of the moisturizing component 51 is provided with a sealing member 515, which may be a rubber strip or oil, which is sealed by an oil seal. This ensures that the maintenance chamber 513 is kept in a sealed state during the moisturizing process of the head of the printing unit 4, and the moisture in the maintenance chamber 513 is prevented from volatilizing.
  • a sealing member 515 which may be a rubber strip or oil, which is sealed by an oil seal.
  • the moisturizing component 51 enters the first position 100, and the printing unit 4 is in tight contact with the sealing member 515 to form a sealed state, thereby preventing the moisture in the maintenance chamber 513 from volatilizing.
  • the nozzle relies on a moisturizing liquid for moisturizing maintenance.
  • a plurality of escape grooves (not shown) for accommodating the blade 514 are formed on the bottom plate of the nozzle to ensure that the nozzle does not collide with the blade 514 when entering the moisturizing state.
  • the driving member 512 drives the movable body 511 to move to the second position 200, and the moisturizing assembly 51 enters the automatic cleaning position.
  • the nozzle 522 Directly above the blade 514, the cleaning liquid ejected from the nozzle 522 sprays the blade 514, and the cleaning liquid flows in the liquid tank 523 to ensure a cleaning effect.
  • the above-mentioned nozzle maintenance device can effectively wash the ink on the blade by spraying the cleaning liquid from the top to the bottom by a cleaning assembly that can be moved above the blade.
  • the above-mentioned blade is fixed in the moisturizing component as compared with the conventional blade and the moisturizing component as separate components, which facilitates simplification of the structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Ink Jet (AREA)
  • Handling Of Sheets (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

一种数码印刷设备，该数码印刷设备包括吸附输送装置(1)，该吸附输送装置(1)包括用于输送板材的输送带(11)，在输送带(11)所限定的空间内设置有通过负压使板材在输送过程中吸附在输送带(11)上的至少一第一吸风箱(14)，在输送带(11)上开设有与第一吸风箱(14)相连通的多个第一吸风孔，第一吸风箱(14)内至少一侧设置有沿与输送方向相垂直的方向移动进而使第一吸风箱(14)与板材配合保持负压状态的活动门(15)。该数码印刷设备在印刷过程中利用输送带(11)输送板材，不存在套色精度差的问题，提高了印刷效果，同时在第一吸风箱(14)设有可移动的活动门(15)，使第一吸风箱(14)的宽度与板材的宽度精确适配，以适应不同规格的板材在相应的负压吸附区域输送，不会有漏风现象，负压吸附效果好。

Description

一种数码印刷设备 技术领域
本发明涉及印刷技术领域，更具体地说，涉及一种数码印刷设备。
背景技术
传统的打印机(板材印刷机)上，在印刷板材输送中一般有两种方法：辊对辊拉纸输送与辊筒吸附输送。利用辊对辊拉纸输送板材，对板材的要求较高，板材需确保后端离开第一组辊时，前端已经进入第二组辊，才能保证板材正常前进，这就对板材进纸方向的长度有了最小的限制；而且两辊间隙大了会导致拉力不够不能送出板材，两辊间隙小了压力太大，导致板材被压溃，影响板材的强度。利用辊筒吸附输送板材，输送精度较差，通常板材印刷要印两个以上的颜色，两个辊筒之间的套色精度会相对差些。另外，现有技术中的吸附输送过程，负压吸风箱上虽然设置有手动开合的风门，但该风门通过开合只能粗略地与板材的宽度相适应，板材的两侧仍然存在部分吸风孔漏风，导致负压吸附效果差的问题。
发明内容
本发明的目的在于提供一种数码印刷设备，解决了现有技术中的板材负压吸附输送的输送精度差、对板材要求高以及负压吸风箱上可开合的门无法精确调节至与板材的宽度相同导致负压吸附效果差的问题。
本发明解决技术问题所采用的技术方案是：一种数码印刷设备，包括吸附输送装置，所述吸附输送装置包括用于输送板材的输送带，在所述输送带所限定的空间内设置有通过负压使板材在输送过程中吸附在所述输送带上的至少一第一吸风箱，在所述输送带上开设有与所述第一吸风箱相连通的多个第一吸风孔，所述第一吸风箱内至少一侧设置有沿与输送方向相垂直的方向移动进而使所述第一吸风箱与板材配合保持负压状态的活动门。
在本发明的数码印刷设备中，所述活动门上设置有第一螺母，所述第一螺母套设在第一丝杆上且随所述第一丝杆的转动发生移动，所述第一丝杆由第一驱动器驱动。
在本发明的数码印刷设备中，所述第一驱动器通过传动机构带动所述第一丝杆转动，所述传动机构包括由所述第一驱动器带动转动的传动轴、与每一所述第一丝杆一一对应连接的连接杆以及多个相互啮合连接的第一锥齿轮和第二锥齿轮，每一所述第二锥齿轮一一对应连接在每一所述连接杆上，每一所述第一锥齿轮连接在所述传动轴上，所述传动轴与连接杆之间通过第一锥齿轮和第二锥齿轮相互联动。
在本发明的数码印刷设备中，在所述吸附输送装置的输送起始端设置有送料装置，所述送料装置包括吸附面板与多个送料轮，所述吸附面板上开设有第二吸风孔，所述送料轮安置于所述第二吸风孔所对应的位置，所述吸附面板的至少一侧的区域的第二吸风孔的上方安装有用于覆盖该区域的可移动调节覆盖区域的挡风罩体。
在本发明的数码印刷设备中，所述挡风罩体包括固定端部、滑动端部和伸缩部，所述固定端部位于所述吸附面板的一侧固定，所述伸缩部连接在所 述固定端部与滑动端部之间，所述滑动端部沿与送料方向相垂直的方向移动并带动所述伸缩部伸长和缩短，所述滑动端部在移动过程中使所述伸缩部覆盖所述吸附面板一侧的区域。
在本发明的数码印刷设备中，在所述吸附输送装置的输送起始端的上方设置有除尘装置，所述除尘装置包括用于清除板材表面浮尘的第一除尘部、用于松动板材表面粘紧灰尘的吹风部和用于清除由所述吹风部松动的板材表面粘紧灰尘的第二除尘部。
在本发明的数码印刷设备中，所述第一除尘部、吹风部和第二除尘部沿板材的输送方向依次设置；所述第一除尘部包括第一除尘刷和用于固定所述第一除尘刷的固定件；所述第二除尘部包括抽风管道，在所述抽风管道的底端连接有抽风筒，所述抽风筒的底端开设有抽风口且在所述抽风口周围设置有第二除尘刷；所述吹风部包括吹风管道，在所述吹风管道的底端连接有吹风筒，所述吹风筒的底端开设有吹风口且所述吹风口朝向所述第二除尘刷所在的一侧吹风；所述第一除尘部的固定件安装在所述吹风管道的一侧，所述第二除尘部安装在所述吹风部背离所述第一除尘部的一侧。
在本发明的数码印刷设备中，在所述输送带的上方设置有至少一喷印单元，每一所述喷印单元配置有喷头维护装置，所述喷头维护装置包括保湿组件；所述保湿组件包括可在第一位置和第二位置之间移动的活动体，在所述活动体上开设有用于容纳保湿所述喷印单元的喷头的维护腔，在所述维护腔内设置有与所述喷印单元的每一喷头一一对应的用于刮除喷头墨水的刮片；所述喷印单元的喷头设置在所述第一位置的上方。
在本发明的数码印刷设备中，在所述第二位置的上方设有用于清洗所述 刮片的清洁组件，所述清洁组件包括固定体，在所述固定体朝向所述第二位置的一侧设置有与每一所述刮片一一对应的用于喷淋清洁液的喷嘴，在所述固定体背向所述喷嘴的一侧开设有与每一所述喷嘴相连通的用于盛放清洁液的液体槽；所述保湿组件的维护腔的边缘设置有密封件。
在本发明的数码印刷设备中，所述刮片的一端形成有弯曲的刀刃；所述喷嘴包括主体，在所述主体上设置有用于容纳所述刀刃的容纳槽，在所述容纳槽的槽底开设有至少一喷液孔。
实施本发明的数码印刷设备，具有以下有益效果：本发明的数码印刷设备在印刷过程中利用输送带输送板材，不存在套色精度差的问题，提高了印刷效果，同时在第一吸风箱设有可移动的活动门，使第一吸风箱的宽度与板材的宽度精确适配，以适应不同规格的板材在相应的负压吸附区域输送，不会有漏风现象，负压吸附效果好。
附图说明
图1为本发明的数码印刷设备的结构示意图；
图2为本发明的数码印刷设备的部分结构的结构示意图；
图3为本发明中的吸附输送装置的结构示意图；
图4为本发明中的吸附输送装置的局部结构放大示意图；
图5为本发明中的吸附输送装置的俯视示意图；
图6为本发明中的送料装置与除尘装置的组合结构的结构示意图；
图7为本发明中的送料装置的俯视示意图；
图8为本发明中的送料装置的侧视示意图；
图9为本发明中的除尘装置的正视示意图；
图10为本发明中的除尘装置的侧视示意图；
图11为本发明中的喷头维护装置在第一状态时的结构示意图；
图12为本发明中的喷头维护装置在第二状态时的结构示意图；
图13为本发明中的喷头维护装置的喷嘴的结构示意图。
具体实施方式
下面结合附图和实施例，对本发明的数码印刷设备的结构和作用原理作进一步说明：
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
如图1-2所示，数码印刷设备包括吸附输送装置1、送料装置2、除尘装置3、喷印单元4以及配置于喷印单元4上的喷头维护装置5。送料装置2安装在吸附输送装置1的输送起始端，除尘装置3设置在吸附输送装置1的输送起始端的上方，至少一喷印单元设置在输送带的上方，喷头维护装置与每一喷印单元一一对应配置。其中，喷印单元可以为多个且沿输送方向排列设置，喷印单元也可以为一个。
如图3所示，该吸附输送装置1包括用于输送板材的输送带11、带动输 送带11移动的主传动辊12、随输送带11移动而转动的从动传动辊13以及带动主传动辊12转动的第二驱动器(图中未标示)。其中第二驱动器可以为马达或电机，且可以直接与主传动辊12相连接，也可以通过传动装置与主传动辊12相连接。
如图3-4所示，在输送带11所限定的空间内设置有通过负压使板材在输送过程中吸附在输送带11上的至少一负压第一吸风箱14，在输送带11上开设有与负压第一吸风箱14相连通的多个第一吸风孔(未有图标示)，负压第一吸风箱14内至少一侧设置有沿与输送方向相垂直的方向移动进而使负压第一吸风箱14与板材配合保持负压状态的活动门15。负压第一吸风箱14上安装有第一抽真空装置(图中未标示)并由该第一抽真空装置抽吸形成负压，负压第一吸风箱14与第一抽真空装置可以直接相连，也可以通过吸风管16与第一抽真空装置相连接。在负压第一吸风箱14的顶端开设有与第一吸风孔相通的通风孔141。
在本实施例中，如图4和5所示，负压第一吸风箱14的数量为多个且沿输送方向依次排列设置，每个负压第一吸风箱14位于输送带11的两侧的侧壁设为活动门15，每个活动门15上设置有第一螺母18，第一螺母18套设在第一丝杆19上且随第一丝杆19的转动发生移动，第一丝杆19由第一驱动器20驱动。其中，第一驱动器20可以为电机或马达。其中，同一负压第一吸风箱14的两个相对的活动门15上的第一螺母18套设在同一第一丝杆19上。
其中第一丝杆19的两端分别形成有正螺纹段和反螺纹段，且相邻的两个第一丝杆的如下配置：第一个第一丝杆的A端形成正螺纹段，相邻的第二个第一丝杆的A端形成反螺纹段；第一个第一丝杆的B端形成反螺纹段，相邻 的第二个第一丝杆的B端形成正螺纹段。当转动第一丝杆19时，第一丝杆19两端的第一螺母18会同时相对移动或同时相背离移动，进而带动同一负压第一吸风箱14上的两个相对的活动门15同时相对移动或相背离移动。其中，第一丝杆19垂直于输送带11的输送方向设置，第一螺母18带动活动门15沿着第一丝杆19的长度方向移动，每一个负压第一吸风箱14与第一丝杆19一一对应配置。
第一驱动器20通过传动机构10带动每一个第一丝杆19转动。传动机构10包括由第一驱动器20带动转动的传动轴101、与每一个第一丝杆19一一对应连接的连接杆102以及多个相互啮合连接的第一锥齿轮103和第二锥齿轮104，每一个第二锥齿轮104一一对应连接在每一个连接杆102上，每一个第一锥齿轮103连接在传动轴101上，传动轴101与连接杆102之间通过第一锥齿轮103和第二锥齿轮104实现相互联动，其中连接杆102与第一丝杆19之间通过联轴器105连接。其中，传动轴101沿输送带11的输送方向延长设置，第一锥齿轮103和第二锥齿轮104相互垂直啮合。
当板材的宽度比输送带11宽度小时，启动第一驱动器20，带动传动轴101转动，传动轴101通过第一锥齿轮103和第二锥齿轮104带动每一个连接杆102转动，进而带动第一丝杆19转动，第一丝杆19的两端的第一螺母18带动活动门15移动，使得活动门15之间的距离与板材的宽度大致相同，则负压第一吸风箱14的顶部、底部和两个活动门15构成的空间恰好位于板材的下方，当抽真空开始，该空间能形成近似真空的状态，使板材保持负压吸附状态。
在另一实施例中，负压第一吸风箱14的数量为一个，整个置于输送带11 限制的空间内。第一丝杆19的数量也为一个，且两端分别形成有正螺纹段和反螺纹段。
在另一实施例中，每个负压第一吸风箱14位于输送带11的其中一侧的侧壁设为活动门15，另一侧的侧壁固定连接于负压第一吸风箱14上。第一丝杆19在靠近活动门15的一端形成有螺纹段。当第一丝杆19的数量为多个时，相邻的两个第一丝杆19的如下配置：第一个第一丝杆的A端形成正螺纹段，相邻的第二个第一丝杆的A端形成反螺纹段。当板材的宽度比输送带11宽度小时，板材靠近输送带11的一侧边缘放置，活动门15设计的位置位于输送带11的另一侧，启动第一驱动器20，带动传动轴101转动，传动轴101通过第一锥齿轮103和第二锥齿轮104带动每一个连接杆102转动，进而带动第一丝杆19转动，第一丝杆19上的第一螺母18带动活动门15移动，使得活动门15与负压第一吸风箱14相对的侧壁之间的距离和板材的宽度大致相同，则负压第一吸风箱14的顶部、底部、侧壁和一个活动门15构成的空间恰好位于板材的下方，当抽真空开始，该空间能形成近似真空的状态，使板材保持负压吸附状态。
在另一实施例中，也可以不需要传动机构10，由第一驱动器20直接带动第一丝杆19转动，当第一丝杆19的数量为多个时，每一个第一丝杆19配置一个第一驱动器20。
通过在印刷过程中利用输送带输送板材，不存在套色精度差的问题，提高了印刷效果，同时在第一吸风箱设有可移动的活动门，实现无极调节，使第一吸风箱的宽度与板材的宽度精确适配，以适应不同规格的板材在相应的负压吸附区域输送，不会有漏风现象，负压吸附效果好。
如图6-8所示，送料装置2包括吸附面板21与多个送料轮22，吸附面板21上开设有通过负压使板材吸附在吸附面板21上的第二吸风孔23，送料轮22安置于第二吸风孔23所对应的位置，具体地，送料轮22与第二吸风孔23对应的孔壁之间存有间隙。在吸附面板21的下方设置有与吸附面板21组装的用于负压抽吸的第二吸风箱24，第二吸风箱24上连接有第二抽真空装置(图中未标示)，使第二吸风箱24内形成负压。优选地，多个送料轮22在吸附面板21上沿送料方向多排排列设置，更优选地，相邻两排的送料轮22交错分布，在其它实施例中，送料轮22也可以自由分布。每排送料轮22由辊轴(图中未标示)带动转动，其中送料轮22套设在辊轴上，辊轴由第三驱动器25驱动转动，第三驱动器25可以是马达，也可以是伺服电机。
在吸附面板21的至少一侧的区域的第二吸风孔23的上方安装有用于覆盖该侧区域第二吸风孔23使板材保持负压吸附状态的挡风罩体26。其中挡风罩体26的数量可以为一个，板材将吸附面板21一侧区域的第二吸风孔23覆盖上，挡风罩体26设置在吸附面板21的另一侧且覆盖该侧区域未被板材盖住的第二吸风孔23；挡风罩体26的数量也可以为两个且分别设置在吸附面板21的两侧，板材放置在吸附面板21的中间位置，两个挡风罩体26分别在吸附面板21的两侧覆盖板材未盖住的第二吸风孔23。
其中，在本实施例中，挡风罩体26包括固定端部261、滑动端部262和伸缩部263，固定端部261位于吸附面板21的一侧固定，伸缩部263连接在固定端部261与滑动端部262之间，滑动端部262沿与送料方向相垂直的方向移动并带动伸缩部263伸长和缩短，滑动端部262在移动过程中使伸缩部263覆盖吸附面板21一侧的区域的第二吸风孔23。其中，滑动端部262上设 置有竖立的挡板262a或把手等。伸缩部263呈折叠伸缩状，通过手动移动滑动端部262。
在另一实施例中，伸缩部263包括多个相互错开叠加连接的板体，每两个相邻的板体可相对移动，也同样是通过手动移动滑动端部262。
在另一实施例中，滑动端部262上设置有第二螺母，第二螺母套设在第二丝杆上且随第二丝杆的转动发生移动，第二丝杆由第四驱动器驱动或手动驱动，第二丝杆是沿与板材的输送方向相垂直的方向延伸，即长度方向与板材的输送方向相垂直的方向相同。其中，第四驱动器可以为马达或电机。另外，当挡风罩体26的数量为两个且分别设置于吸附面板21的两侧，则两个挡风罩体26的滑动端部262上的第二螺母的螺纹方向是相反的，且均套设在同一第二丝杆上，从而使得滑动端部262同时相向运动或同时相背离运动。在其它实施例中，也可以是同一第二丝杆的两端分别形成正螺纹段和反螺纹段，进而使得滑动端部262同时相向运动或同时相背离运动。
在另一实施例中，挡风罩体26是可沿与送料方向相垂直的方向移动的门体，即普通的拉门似的门体，且挡风罩体26在移动过程中覆盖吸附面板21一侧的区域的第二吸风孔。
通过在送料装置的吸附面板的至少一侧设置可拉伸的挡风罩体，可以精确适配于待印刷的板材的宽度，完全覆盖未被板材盖住的吸风孔，进而保持较佳的负压吸附效果
如图6、9和10所示，除尘装置3包括用于清除板材表面浮尘的第一除尘部31、用于松动板材表面粘紧灰尘的吹风部32和用于清除由吹风部32松动的板材表面粘紧灰尘的第二除尘部33。在本实施例中，第一除尘部31、吹 风部32和第二除尘部33沿板材的输送方向依次设置，在其它实施例中，也可吹风部32、第二除尘部33、第一除尘部31沿输送方向依次设置。
第一除尘部31包括第一除尘刷311和用于固定第一除尘刷311的固定件312；第二除尘部33包括抽风管道331，在抽风管道331的下端连接有抽风筒332，抽风筒332的底端开设有抽风口333且在该抽风口333周围设置有第二除尘刷334；吹风部32包括吹风管道321，在吹风管道321的下端连接有吹风筒322，吹风筒322的下端开设有吹风口323且吹风口323朝向第二除尘刷334所在的一侧吹风；第一除尘部31的固定件312安装在吹风管道321下端的一侧，第二除尘部33安装在吹风部32背离第一除尘部31的一侧。
在第一除尘部31、第二除尘部33和吹风部32的下方设置有用于支撑板材的支撑部34，支撑部34位于送料装置2的吸附面板21与吸附输送装置1的输送带11之间，第一除尘刷311的末端与第二除尘刷334的末端分别与支撑部34之间保持预定距离，该预定距离等于输送中的板材的厚度或小于输送中的板材的厚度。
吹风管道321包括相互连通的吹风管321a和吹风横梁321b，吹风管321a与吹风横梁321b相互垂直，吹风管321a的顶端由固定部35固定，吹风横梁321b连接在吹风管321a的下端，吹风管321a与气体发生装置(未有图标示)相连接，通过气体发生装置输出具有一定压力的气体。其中，吹风管321a是竖立在吹风横梁321b上，吹风横梁321b的长度方向是沿送料方向的垂直方向延伸，且在吹风横梁321b上可以竖立一个或多个吹风管321a。吹风筒322连接在吹风横梁321b靠近第二除尘部33的一侧的下端且与吹风横梁321b相连通，吹风横梁321b背离第二除尘部33的一侧通过固定件312与第一除尘 刷311相连接，第一除尘刷311包括两排毛刷且分别固定于固定件312的两侧，且第一除尘刷311的长度与吹风横梁321b的长度大致相同。在其它实施例中，第一除尘刷311也可以仅包含一个毛刷。其中，固定件312上设置有多个狭长槽(图中未标示)，通过穿过狭长槽的螺钉可将固定件312固定，因设置有该狭长槽，在需要时，可上下移动固定件312，进而调整第一除尘刷311的末端与支撑部34之间的距离，以适应不同厚度的板材。
吹风筒322从上至下逐渐收窄至吹风口323，这样有利于气流以较快的速度喷出，增强吹出的气流的强度。吹风筒322包括上风刀322a和下风刀322b，在上风刀322a上设置有多个狭长槽(图中未标示)，通过狭长槽的螺钉将上风刀322a固定，在需要时，可通过该狭长槽上下移动上风刀322a，从而可以调整吹风口323的大小。
第二除尘部33的抽风管道331包括相互连通的抽风管331a和抽风横梁331b，抽风横梁331b的顶端由固定部35固定，抽风横梁331b的底端与抽风管331a的顶端相连接，抽风筒332的顶端与抽风管331a的底端相连接且与抽风管331a相互连通。抽风横梁331b与抽风管331a相互垂直，即抽风管331a竖立在抽风横梁331b的下方，在抽风横梁331b的下方可以竖立一个或多个抽风管331a。其中，抽风横梁331b的长度方向沿与送料方向的垂直方向延伸，即与吹风横梁321b的长度方向相同。抽风筒332大致呈漏斗状，第二除尘刷334包括两个毛刷且分别设置在抽风筒332底端的抽风口333的两侧。在其它实施例中，第二除尘刷334也可以只包括一个毛刷。抽风横梁331b与抽气装置(未有图标示)相连接，抽气装置可以为气泵或鼓风机等。第二除尘刷334的长度与抽风筒332的长度大致相同。
工作时，板材输送至支撑部34上，板材的待印刷表面首先与第一除尘部31的第一除尘刷311的末端接触，由于第一除尘刷311的末端与支撑部34之间的距离等于或小于板材的厚度，第一除尘刷311的末端能刷扫掉待印刷表面的灰尘与纸屑；板材继续移动会进入吹风部32的区域，气流从吹风口323喷出，能将待印刷表面粘紧的灰尘吹松动；板材继续移动进入第二除尘部33所在的区域，第二除尘刷334的末端与支撑部34之间的距离等于或小于板材的厚度，第二除尘刷334可扫掉被吹得松动的灰尘，通过抽风筒332、抽风管331a和抽风横梁331b将被吹松动的灰尘抽走。
板材在移动过程中，先后经第一除尘部31和第二除尘部33进行除尘，对板材的待处理表面进行两次除尘，能够满足对高除尘效果的要求。
如图11-12所示，喷头维护装置5包括保湿组件51，保湿组件51包括可在第一位置100和第二位置200之间移动的活动体511，活动体511的两端设有滑轨(图中未标示)和驱动件512，活动体511上具有沿着滑轨移动的滑块(图中未标示)，驱动件512带动滑块移动，进则带动活动体511沿滑轨在第一位置100和第二位置200之间移动，驱动件512可以为气缸或液压缸等。在其它实施例中，也可以用电机配合带传动装置或螺母丝杆传动装置带动活动体511移动。
在活动体511上开设有用于容纳保湿喷印单元4的喷头的维护腔513，维护腔513内盛装保湿液，在维护腔513内设置有与喷印单元4的每一个喷头一一对应的用于刮除喷头墨水的刮片514；喷印单元4的喷头设置在第一位置100的上方。刮片514具有用于刮除喷头墨水的一端形成有朝斜上方微微弯曲的刀刃(图中未标示)。
在第二位置200的上方设有用于清洗刮片514的清洁组件52。清洁组件52包括固定体521，在固定体521朝向第二位置200的一侧设置有与每一个刮片514一一对应的用于喷淋清洁液的喷嘴522，当活动体511移动至第二位置200时，基本上喷嘴522位于刮片514的的正上方。在固定体521背向喷嘴522的一侧开设有与每一个喷嘴522相连通的用于盛放清洁液的液体槽523。如图13所示，每个喷嘴522包括主体522a，在主体522a上设置有用于容纳刮片514的刀刃的容纳槽522b，在容纳槽522b的槽底开设有至少一喷液孔522c，即在容纳槽522b的槽底开设有一个喷液孔522c，也可以开设多个喷液孔522c。另外，在其它实施例中，在喷嘴522的主体522a上不设置容纳槽522b，直接在主体522a上设有喷液孔522c。清洁液从液体槽523流向每一个喷嘴522，通过喷液孔522c喷出，清洁刮片514。
保湿组件51的维护腔513的边缘设置有密封件515，密封件515可以为胶条，也可以为油，利用油封实现密封。这样可以保证在对喷印单元4的喷头的保湿过程中，使维护腔513保持密封状态，防止维护腔513内的保湿液挥发。
如图11所示，喷印单元4的喷头不工作时，保湿组件51进入第一位置100，喷印单元4与密封件515紧紧接触，形成密封状态，防止维护腔513内的保湿液挥发，喷头依靠保湿液进行保湿维护。在喷头的底板上开设有多个用于容纳刮片514的避让槽(图中未标示)，用于保证喷头进入保湿状态时不会与刮片514相撞。
如图12所示，喷印单元4的喷头需进行打印工作时，驱动件512驱动活动体511移动至第二位置200，保湿组件51进入自动清洁位。此时，喷嘴522 位于刮片514的正上方，自喷嘴522喷出的清洁液对刮片514进行喷淋清洗，此清洁液在液体槽523是流动的，可保证清洁效果。
上述喷头维护装置通过能移动到刮片上方的清洁组件由上向下喷射清洁液，能够有效的将刮片上的墨水冲洗掉。此外，相比于传统的刮片和保湿组件为独立的组件，上述刮片固定在保湿组件中，有利于结构的简化。
应当理解的是，对本领域技术人员来说，可以根据上述说明加以改进或变换，但这些改进或变换都应属于本发明所附权利要求的保护范围之内。

Claims (10)

  1. 一种数码印刷设备，包括吸附输送装置(1)，其特征在于，所述吸附输送装置(1)包括用于输送板材的输送带(11)，在所述输送带(11)所限定的空间内设置有通过负压使板材在输送过程中吸附在所述输送带(11)上的至少一第一吸风箱(14)，在所述输送带(11)上开设有与所述第一吸风箱(14)相连通的多个第一吸风孔，所述第一吸风箱(14)内至少一侧设置有沿与输送方向相垂直的方向移动进而使所述第一吸风箱(14)与板材配合保持负压状态的活动门(15)。
  2. 根据权利要求1所述的数码印刷设备，其特征在于，所述活动门(15)上设置有第一螺母(18)，所述第一螺母(18)套设在第一丝杆(19)上且随所述第一丝杆(19)的转动发生移动，所述第一丝杆(19)由第一驱动器(20)驱动。
  3. 根据权利要求2所述的数码印刷设备，其特征在于，所述第一驱动器(20)通过传动机构(10)带动所述第一丝杆(19)转动，所述传动机构(10)包括由所述第一驱动器(20)带动转动的传动轴(101)、与每一所述第一丝杆(19)一一对应连接的连接杆(102)以及多个相互啮合连接的第一锥齿轮(103)和第二锥齿轮(104)，每一所述第二锥齿轮(104)一一对应连接在每一所述连接杆(102)上，每一所述第一锥齿轮(103)连接在所述传动轴(101)上，所述传动轴(101)与连接杆(102)之间通过第一锥齿轮(103)和第二锥齿轮(104)相互联动。
  4. 根据权利要求1所述的数码印刷设备，其特征在于，在所述吸附输送 装置(1)的输送起始端设置有送料装置(2)，所述送料装置(2)包括吸附面板(21)与多个送料轮(22)，所述吸附面板(21)上开设有第二吸风孔(23)，所述送料轮(22)安置于所述第二吸风孔(23)所对应的位置，所述吸附面板(21)的至少一侧的区域的第二吸风孔(23)的上方安装有用于覆盖该区域的可移动调节覆盖区域的挡风罩体(26)。
  5. 根据权利要求4所述的数码印刷设备，其特征在于，所述挡风罩体(26)包括固定端部(261)、滑动端部(262)和伸缩部(263)，所述固定端部(261)位于所述吸附面板(21)的一侧固定，所述伸缩部(263)连接在所述固定端部(261)与滑动端部(262)之间，所述滑动端部(262)沿与送料方向相垂直的方向移动并带动所述伸缩部(263)伸长和缩短，所述滑动端部(262)在移动过程中使所述伸缩部(263)覆盖所述吸附面板(21)一侧的区域。
  6. 根据权利要求1所述的数码印刷设备，其特征在于，在所述吸附输送装置(1)的输送起始端的上方设置有除尘装置(3)，所述除尘装置(3)包括用于清除板材表面浮尘的第一除尘部(31)、用于松动板材表面粘紧灰尘的吹风部(32)和用于清除由所述吹风部(32)松动的板材表面粘紧灰尘的第二除尘部(33)。
  7. 根据权利要求6所述的数码印刷设备，其特征在于，所述第一除尘部(31)、吹风部(32)和第二除尘部(33)沿板材的输送方向依次设置；所述第一除尘部(31)包括第一除尘刷(311)和用于固定所述第一除尘刷(311)的固定件(312)；所述第二除尘部(33)包括抽风管道(331)，在所述抽风管道(331)的底端连接有抽风筒(332)，所述抽风筒(332)的底端开设有抽风口(333)且在所述抽风口(333)周围设置有第二除尘刷(334)；所述 吹风部(32)包括吹风管道(321)，在所述吹风管道(321)的底端连接有吹风筒(322)，所述吹风筒(322)的底端开设有吹风口(323)且所述吹风口(323)朝向所述第二除尘刷(334)所在的一侧吹风；所述第一除尘部(31)的固定件(312)安装在所述吹风管道(321)的一侧，所述第二除尘部(33)安装在所述吹风部(32)背离所述第一除尘部(31)的一侧。
  8. 根据权利要求1所述的数码印刷设备，其特征在于，在所述输送带(11)的上方设置有至少一喷印单元(4)，每一所述喷印单元(4)配置有喷头维护装置(5)，所述喷头维护装置(5)包括保湿组件(51)；所述保湿组件(51)包括可在第一位置(100)和第二位置(200)之间移动的活动体(511)，在所述活动体(511)上开设有用于容纳保湿所述喷印单元(4)的喷头的维护腔(513)，在所述维护腔(513)内设置有与所述喷印单元(4)的每一喷头一一对应的用于刮除喷头墨水的刮片(514)；所述喷印单元(4)的喷头设置在所述第一位置(100)的上方。
  9. 根据权利要求8所述的数码印刷设备，其特征在于，在所述第二位置(200)的上方设有用于清洗所述刮片(514)的清洁组件(52)，所述清洁组件(52)包括固定体(521)，在所述固定体(521)朝向所述第二位置(200)的一侧设置有与每一所述刮片(514)一一对应的用于喷淋清洁液的喷嘴(522)，在所述固定体(521)背向所述喷嘴(522)的一侧开设有与每一所述喷嘴(522)相连通的用于盛放清洁液的液体槽(523)；所述保湿组件(51)的维护腔(513)的边缘设置有密封件(515)。
  10. 根据权利要求9所述的数码印刷设备，其特征在于，所述刮片(514)的一端形成有弯曲的刀刃；所述喷嘴(522)包括主体(522a)，在所述主体 (522a)上设置有用于容纳所述刀刃的容纳槽(522b)，在所述容纳槽(522b)的槽底开设有至少一喷液孔(522c)。
PCT/CN2017/085330 2016-09-06 2017-05-22 一种数码印刷设备 Ceased WO2018045776A1 (zh)

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