JP2016055472A - Printer maintenance device and printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer maintenance device provided in a pinter to simultaneously install a dying prevention cover for many discharge ports arrayed in a sheet width direction and clean many discharge ports, and a printing device.SOLUTION: The printer maintenance device includes: a cover for covering, in an exposing manner, a discharge port of a printer having a discharge port for discharging ink and configured to print an image on a sheet by discharging the ink from the discharge port; a wiping-off member 531 brought into contact with the discharge port to wipe out the ink from the discharge port when moved to a first position facing the discharge port; a biasing member for biasing the wiping-off member 531 to a first posture to be brought into contact with the discharge port during the movement to the first position; a cleaning part having a cleaning device moved via the first position; and a posture changing part brought into contact with the cleaning device moved to a second position shifted from the first position to change the posture of the wiping-off member 531 to a second posture not interfering with the covering of the discharge port with the cover.SELECTED DRAWING: Figure 19

Description

  The present invention relates to a printing press maintenance apparatus and a printing apparatus.

  Patent Documents 1 to 3 disclose a structure for wiping off stains on a print head in an ink jet printer that performs printing while moving in the paper width direction.

JP-A-8-174853 JP-A-9-226147 JP 2003-80720 A

  The present invention is a printing press maintenance device for a printing press having a large number of discharge ports arranged in the paper width direction, and includes a cover for preventing drying of the large number of discharge ports and cleaning of the large number of discharge ports. It is an object of the present invention to provide a printing press maintenance device that achieves both of the above and a printing device including the printing press maintenance device.

Claim 1
A cover portion that has a discharge port for discharging liquid and covers the discharge port of a printing press that discharges the liquid from the discharge port and prints an image of the liquid on paper;
A wiping member that comes into contact with the discharge port when moved to the first position facing the discharge port and wipes off the liquid in the discharge port, and the wiping member is moved to the first position when moved to the first position. A urging member that urges the first posture in contact with the cleaning portion, and a cleaning unit including a cleaning device that moves via the first position;
Posture change that changes the posture of the wiping member to a second posture that does not interfere with the cover portion covering the discharge port, in contact with the cleaning device that has moved to the second position that is out of the first position. And a printing press maintenance device.

  According to a second aspect of the present invention, the apparatus includes a wiping member wiping portion that is disposed at the second position and wipes the wiping member in contact with the wiping member of the cleaning device that has moved to the second position. The printing press maintenance device according to claim 1, wherein the maintenance device is a printing press maintenance device.

Claim 3 is a transport unit for transporting paper;
A printing unit that has a discharge port for discharging liquid and discharges the liquid from the discharge port to print an image of the liquid on paper;
A maintenance section that can freely advance and retreat at a position facing the discharge port;
The maintenance department
A cover that covers the discharge port of the printing machine so as to be exposed;
A wiping member that contacts the discharge port when moving to the first position facing the discharge port, and wipes off the liquid in the discharge port; and the wiping member that moves to the first position when moved to the first position An urging member that urges the first posture to contact, and a cleaning unit that moves via the first position;
Posture change that changes the posture of the wiping member into a second posture that does not interfere with the cover portion covering the discharge port, in contact with the cleaning portion that has moved to the second position that is out of the first position. A printing apparatus.

  According to the printing press maintenance apparatus of claim 1 and the printing apparatus of claim 3, the structure is compared with the configuration provided with a motor that reconciles the discharge port with cleaning and changes the attitude of the wiping member. It can be simplified.

  According to the printing press maintenance apparatus of the second aspect, the attitude of the wiping member is changed using the wiping member wiping portion.

1 is a schematic diagram of a printing apparatus as an embodiment of the present invention. It is the schematic diagram which showed an example of the continuous paper used in this embodiment. It is the figure which showed schematic structure and operation | movement of a guide apparatus. It is the figure which showed schematic structure and operation | movement of a guide apparatus. It is the figure which showed schematic structure and operation | movement of a guide apparatus. It is the flowchart which showed the operation | movement sequence at the time of printing. It is a schematic diagram of a paper drawer stabilizing device. It is the figure which showed the arrangement position of a fan. It is a schematic block diagram of a paper dust removal apparatus. It is the schematic diagram which showed the 1st modification of the paper dust removal apparatus. It is the schematic diagram which showed the 2nd modification of the paper dust removal apparatus. It is the schematic diagram which showed the 3rd modification of the paper dust removal apparatus. It is a perspective view of the printing press maintenance apparatus in this embodiment. It is a top view of the printing press maintenance apparatus in this embodiment. It is a front view of the printing press maintenance apparatus in this embodiment. It is a perspective view of the wiping member which comprises a wiping apparatus. It is a right view of the wiping member assembly incorporating the wiping member. It is sectional drawing which follows the arrow XX shown in FIG. 17 of the wiping member assembly incorporating the wiping member. FIG. 19 is a front view of a state in which the wiping member assembly shown in FIGS. 17 and 18 is supported by a support member. FIG. 19 is a left side view of a state where the wiping member assembly shown in FIGS. 17 and 18 is supported by a support member. It is the left view which showed the attitude | position after rotation of the wiping member assembly. It is the figure which showed operation | movement of the wiping member assembly which has approached the wiping member wiping part. It is the perspective view which showed the wiping member assembly when it has moved to the wiping member wiping part.

Embodiments of the present invention will be described below.
(Overall explanation)
FIG. 1 is a schematic diagram of a printing apparatus as an embodiment of the present invention.

  The printing apparatus 1 draws and conveys continuous form paper, so-called continuous paper P, which is folded and stored in a storage box 11 placed in a paper storage unit 10, from the storage box 11, and the continuous paper. A printing apparatus that prints an image on P.

  FIG. 2 is a schematic diagram showing an example of continuous paper used in the present embodiment.

  On the continuous paper P, perforations 12 are formed at regular intervals. Further, feed holes 13 arranged at a constant pitch in the longitudinal direction are formed at both ends in the width direction of the continuous paper P. The continuous paper P is folded for each perforation 12 with the perforation 12 as a fold, and is accommodated in the storage box 11 shown in FIG. Then, the continuous paper P stored in the storage box 11 is pulled out of the storage box 11 and conveyed.

  Returning to FIG. 1, the description will be continued.

  The tractor 30 and the driving device 80 carry the continuous paper P. The tractor 30 corresponds to an example of a retracting unit and an example of a feeding device, and the driving device 80 corresponds to an example of a first driving unit and an example of a conveying unit.

  The tractor 30 includes protrusions (not shown) that fit into feed holes 13 (see FIG. 2) formed at both ends in the width direction of the continuous paper P, and the continuous paper P is fed by the protrusions. Device.

  When the leading end of the continuous paper P is manually pulled out from the storage box 11 and passed to the tractor 30 according to the required paper passing route, it is fed by the tractor 30 and automatically passed through the required paper passing route. The At this time, the guide unit 701 constituting the guide device 70 is in the first position A close to the printing press 60 and the driving device 80 and guides the leading end of the continuous paper P that is being passed. Details of the guide device 70 and the guide unit 701 will be described later. The continuous paper P that has passed through the driving device 80 is folded and stored in the paper storage unit 90 according to the paper passing path switched in advance by the paper passing switching mechanism 91, or is provided in the subsequent stage of the printing device 1. It is conveyed toward a post-processing device (not shown). Note that the leading end of the continuous paper P is handed from the printing apparatus 1 to the post-processing apparatus. In addition, the printing apparatus 1 is provided with a control device 100 that controls the entire printing apparatus 1. The control apparatus 100 is provided with a user interface (UI) 101 for notifying the user of the state of the printing apparatus 1 and giving a user instruction to the printing apparatus 1.

The continuous paper P drawn out from the storage box 11 passes through the paper drawer stabilization device 20 provided with the fan 21, is given back tension by the back tension roll 29, passes through the tractor 30, and is further fed with paper dust. The drive device 80 is reached through a paper path that passes through the removal device 40, the printing press maintenance device 50 in the retracted position, the printing press 60, and the guide device 70. The continuous paper P further sent out by the driving device 80 is stored in the paper storage unit 90 according to the paper passing path switched by the paper passing switching mechanism 91 or sent out from the printing device 1 as described above.
(Driver)
In the following, first, the driving device 80 will be described.

  The driving device 80 is provided with a driving roll 81. The drive roll 81 is rotationally driven in the direction of arrow R in response to the driving force of the motor 83 transmitted via the relay gear 82.

The leading end portion of the continuous paper P fed by the tractor 30 and guided by the guide device passes between the guide roll 84 and the guide member 85 facing the guide roll and reaches the drive roll 81. Then, the guide member 86 is guided by the guide member 86 facing the drive roll 81, wound around the drive roll 81, and pressed against the drive roll 81 by the spring-biased pressing roll 87. Thereafter, as described above, the paper proceeds toward the paper storage unit 90 or is sent from the printing apparatus 1.
(Printer)
Next, the printing press 60 will be described. The printing machine 60 is an example of a printing unit and an example of a printing machine.

The printing machine 60 is a so-called inkjet type printing machine, and a large number of nozzles 61 that eject ink from the ejection ports 61 a toward the continuous paper P are arranged in the width direction of the continuous paper P. When printing the image on the continuous paper P, the printing machine 60 is moved in the direction of arrow D, is in the printing position shown in FIG. 1, and is suspended in the direction of arrow U when printing is paused. In position. Further, the printing press maintenance apparatus 50 moves in the direction of arrow B during printing and is in the retracted position shown in FIG. When the printing is stopped, the printing press maintenance device 50 moves in the direction of arrow A, moves up in the direction of arrow U, and is arranged immediately below the printing press 60 in the standby position. Detailed description of the printing press maintenance apparatus 50 will be given later.
(Guide device)
Next, the guidance device 70 will be described next. The guide device 70 includes a guide unit 701. The guide unit 701 includes a first guide unit 71 and a second guide unit 72 each having a plurality of rolls 711 and 721.

  The guide unit 701 is interposed between the printing press 60 and the driving device 80 with respect to the conveyance direction of the continuous paper P, and is horizontally between the first position A and the second position B (arrow XX direction). It can be reciprocated freely. The first position A is a position where the guide unit 701 is moved when the continuous paper P is passed and when printing is paused. The guide portion 701 at the first position A guides the leading end portion of the continuous paper P that has passed through the printing press 60 to the driving device 80. In the movement between the first position A and the second position B, the first guide part 71 and the second guide part 72 move together. When the guide unit 701 is at the second position B, the guide unit 701 bypasses the portion of the continuous paper P that has passed through the printing machine 60 to the second position B in the horizontal direction (arrow XX direction). Then, it is guided to the driving device 80.

  Further, in the present embodiment, the second guide portion 72 includes the first guide between the second position B and the third position C descending from the second position B in the vertical direction (arrow ZZ direction). The unit 71 is configured to be movable separately.

  That is, in the state where the second guide unit 72 is moved to the third position C, the guide unit 701 moves the portion of the continuous paper P that has passed the printing press 60 in the horizontal direction (arrows). Detour in the XX direction) and further detour to the third position C in the vertical direction (arrow Z-Z direction) by the second guide 72 and guide to the driving device 80. The horizontal direction (arrow XX direction) is an example of the first direction, and the vertical direction (arrow ZZ direction) is an example of the second direction.

  Since the printing machine 60 prints on the continuous paper P using ink that is liquid, it takes time for the printing to dry. Therefore, in the printing apparatus 1 of the present embodiment, when printing on the continuous paper P, it is largely bypassed to ensure the ink drying time.

  3 to 5 are diagrams showing a schematic structure and operation of the guide device.

  Here, FIG. 3 shows a state in which the guide portion 701 constituting the guide device 70 is in the first position A. FIG. 4 shows a state where the guide portion 701 has moved from the first position A and has approached the second position B. Further, FIG. 5 shows a state where the second guide part 72 constituting the guide part 701 is separated from the first guide part 71 and moved to the third position C.

  The guide part 701 has the 1st guide part 71 and the 2nd guide part 72 as above-mentioned. The guide device 70 includes a pair of guide frames 702 that extend in the horizontal direction (arrow XX direction) and guide the guide portion 701 in the horizontal direction (arrow XX direction), as well as the horizontal direction (arrow XX). A rack 703 extending in the X direction) is provided.

  On the other hand, a guide roller 712 and a motor 713 are provided in the first guide part 71 constituting the guide part 701.

  The guide roller 712 is a member that is fitted into the guide frame 702 and guided to the guide frame 702. In addition, a pinion gear (not shown) that meshes with the rack 703 is fixed to the motor 713 on its rotating shaft. Thus, when the motor 713 rotates, first, the first guide portion 71 is guided by the guide frame 702 and moves in the horizontal direction (arrow XX direction).

  In addition, the first guide portion 71 is provided with a coupling recess 714 (see also FIG. 5) that opens downward and is coupled to the second guide portion 72. 72 is provided with a coupling convex portion 722 that fits into the coupling concave portion 714 from below. The first guide portion 71 moves in the horizontal direction (arrow XX direction) in a state where the coupling convex portion 722 is fitted in the coupling concave portion 714, so that the second guide portion 72 is also integrated with the first guide portion 71. , Move in the horizontal direction (arrow XX direction). The second guide portion 72 is provided with a guide roller 723. When the guide roller 723 moves in the horizontal direction (arrow XX direction), the guide roller 723 is guided by a guide bar 704 extending horizontally.

  In the second position B, an elevating mechanism 705 for moving the second guide portion 72 in the vertical direction (arrow ZZ direction shown in FIG. 5) is reserved. The lifting mechanism 705 is provided with a groove 706 into which the guide roller 72 of the second guide portion 72 enters when the guide portion 701 moves to the second position B. Further, the guide device 70 includes a screw shaft 709 that extends vertically between the second position B and the third position C and is driven by a motor 708 to rotate. The elevating mechanism 705 moves in the vertical direction (arrow ZZ direction) separately from the first guide portion 71 while being guided by the guide pole 707 extending vertically by the rotation of the screw shaft 709.

  FIG. 6 is a flowchart showing an operation sequence during printing.

  One of the first control and the second control in this flowchart is selected in advance by the user operating the UI 101 (see FIG. 1). Image data for printing is sent from the image editing apparatus (not shown) to the printing apparatus 1 to instruct the start of printing. Then, the operation according to the operation sequence shown in FIG. 6 is executed.

  When the printing apparatus 1 is not printing, the first guide unit 71 returns to the first position A and stands by. On the other hand, the guide unit 701 moves to the printing position and stops at the printing position during printing. In this embodiment, typically, the first guide 71 is in the second position B, the second guide 72 is in the third position C, and the guide 701 is in the print position. It is called. However, the printing apparatus 1 employs quick-drying ink, and the guide unit 701 (both the first guide unit 71 and the second guide unit 72) is in the second position B, that is, continuous paper. When sufficient drying is performed only by detouring P to the second position B in the horizontal direction, the printing position may be that the guide portion 701 including the second guide portion 72 is at the second position B.

  When an instruction to start printing is received, it is first determined whether or not the guide unit 701 is at the first position A (step S01). When the guide unit 701 is at the first position A, it means that the printing is in a suspended state. The description of the operation when in the first position A will be described later.

  If it is determined that the guide unit 701 does not exist at the first position A (step S01), it is then determined whether or not the guide unit 701 is at the printing position (step S02). When neither the first position A nor the printing position is present, the guide unit 701 is in the process of moving between them, and the movement is continued (step S03).

  When it is confirmed that the guide unit 701 is at the printing position (step S02), it is determined whether the transport speed of the continuous paper P is at a specified transport speed or is currently increasing (step S04). ). When the speed is increasing, the speed increasing state is maintained until the specified transport speed is reached (step S05).

  If it is determined that the conveyance speed of the continuous paper P is at the specified speed (step S05), it is next determined whether or not the printing instructed before the current printing instruction is being performed. (Step S06). When printing is in progress, the current print instruction is in a print standby state, and printing is started after the previous printing is completed.

  If it is determined in step S06 that printing is not in progress, printing is started at a speed corresponding to the specified transport speed.

  Next, an operation when it is determined in step S01 that the guide unit 701 exists at the first position A will be described.

  In step S01, when it is recognized that the guide unit 701 exists at the first position A, the guide unit 701 starts moving toward the printing position (step S09), and accordingly the continuous paper P is slowly moved. The transport is completed (step S10).

  The subsequent operation sequence differs depending on whether one of the first control and the second control is set in advance by the user.

  In the case of the first control, the waiting time until the start of printing is shortened.

  In the case of the first control, when the movement of the guide unit 701 is started and conveyance of the continuous paper P is started at a slow conveyance speed, printing at a speed corresponding to the slow conveyance speed is started. (Step S11). When the guide unit 701 reaches the printing position (step S12), the transport speed of the continuous paper P is increased toward a specified speed (step S13), and the print speed is increased according to the increased transport speed. Is printed (step S14). When the transport speed of the continuous paper P reaches a specified transport speed (step S15), printing at a printing speed corresponding to the specified transport speed is started (step S16).

  That is, in the first control, printing is started from the point in time when the guide unit 701 starts moving from the first position A.

  Next, the second control will be described. In the case of the above-described first control, printing is performed while the guide unit 701 is moving and before the conveyance speed of the continuous paper P reaches a specified conveyance speed, so that it is difficult to ensure the quality of printing. On the other hand, in the second control described below, an operation focusing on print quality is performed.

  In the second control, the guide unit 701 starts to move in step S09, and even if the continuous paper P starts to be transported at a slow transport speed in step S10, the guide unit 701 is not immediately printed and is not printed. It waits until 701 reaches the printing position (step S22). Furthermore, even if the guide unit 701 reaches the printing position, printing is not yet started, and the conveyance speed of the continuous paper P is then increased (step S23). When the transport speed of the continuous paper P reaches a specified transport speed (step S25), printing at a printing speed corresponding to the specified speed is started (step S26).

  In the case of the second control, when printing is started, the guide unit 701 is moved to the printing position, and the transport speed of the continuous paper P is also stable at the specified transport speed. Therefore, compared to the case of the first control, stable high quality printing is performed (step S26).

That is, in the case of the second control, the guide unit 701 is in the state of being moved to the printing position, and the transport speed of the continuous paper P is also stable at the specified transport speed. Therefore, stable and high-quality printing can be expected as compared with the case of the first control.
(Paper drawer stabilization device)
Next, the paper drawer stabilizing device 20 shown in FIG. 1 will be described.

  As described above, the storage box 11 is placed in the paper storage unit 10, and the continuous paper P having the structure shown in FIG. 2 is folded and stored in the storage box 11 for each perforation. In the printing apparatus 1, the leading end of the continuous paper P is manually pulled out to the position of the tractor 30 and set on the tractor 30. After that, when a sheet is instructed by the operation of the UI 101, the continuous paper P is automatically conveyed on a prescribed sheet passing path and is passed.

After the paper is passed, printing on the continuous paper P is performed.
The remaining amount of the continuous paper P becomes smaller. The gap g between the inner wall surface of the storage box 11 and the continuous paper P in the storage box 11 is as narrow as several mm, and when the remaining amount of the continuous paper P decreases, the continuous paper P is pulled out. If the air does not catch up with the wedge-shaped part on the back side of the part, and if no measures are taken, the continuous paper P may be pulled out while being adsorbed on the inner wall surface of the storage box 11. is there. Then, since the continuous paper P is folded at the perforation 12 (see FIG. 2), the inner wall surface of the storage box is formed between the perforation 12 and the portions other than the perforation 12 of the continuous paper P. The tension of the continuous paper P varies greatly with the period of the perforation 12, and the variation of the tension is transmitted to the printing press 60, which may lead to deterioration in printing quality. In recent years, there has been a tendency to increase the conveyance speed in order to improve printing efficiency, and the effect of this variation in tension becomes more pronounced when conveyed at high speed.

  Therefore, in the present embodiment, the paper drawer stabilizing device 20 is disposed above the storage box 11 placed in the paper storage unit 10 to stabilize the drawer of the continuous paper P from the storage box 11. Yes.

  FIG. 7 is a schematic diagram of the paper drawer stabilizing device.

  Here, a guide member 21, a fan 22, and a support roll 23 are shown.

  The guide member 21 is an example of a guiding member, is installed at a position away from the storage box 11 placed in the paper storage unit 10, and indicates the direction of conveyance of the continuous paper P drawn from the storage box 11. It is a member to stabilize.

  The fan 22 is an example of an air blowing unit, and plays a role of sending sideways wind toward a portion of the continuous paper P that has been drawn from the paper storage unit 10 before reaching the guide member 21.

In this way, when the fan 22 is provided and a cross wind is applied to the portion of the continuous paper P drawn from the storage box 11, the continuous paper separates from the inner wall surface of the storage box 11.

  Here, if the fan 22 is installed in a direction in which air is actively sent into the gap g between the inner wall surface of the storage box 11 and the continuous paper P stored in the storage box 11, the continuous paper is provided. P is beaten in an uncontrollable posture, and becomes unstable.

  The support roll 23 is an example of a support member, and is a portion of the continuous paper P drawn out from the storage box 11 placed in the paper storage unit 10 and pushed sideways by the wind sent out from the fan 22. It plays a role in supporting the part from the side.

  The support roll 23 is disposed between the fan 22 and the guide member 21 in the vertical direction. That is, regarding the installation height, the guide member 21 (height H1), the support roll 23 (height H2), and the fan 22 (height H3) satisfy H1> H2> H3. In this embodiment, H1 = 750 mm, H2 = 450 mm, and H3 = 400 mm are set.

  When this support roll 23 is provided, the continuous paper P drawn from the storage box 11 is less likely to flutter than when the fan 22 is blown without the support roll 23. Further, H2> H3, that is, the posture of the continuous paper P is more than when the support roll 23 is disposed below the air outlet of the fan 22 than when it is disposed below the air outlet (H2 <H3). The accuracy of control is further increased.

  Here, the support roll 23 is a rotating body that is in contact with the continuous paper P and is driven by the conveyance of the continuous paper P. Instead of the support roll 23 of the rotary body, a non-rotating support member is disposed. May be.

  As a result of applying wind to the portion of the continuous paper P that is being pulled out of the storage box 11 with the fan 22, the inner wall surface of the storage box 11 on the side away from the fan 22 due to the wind. If the continuous paper P comes into contact with the paper, there is a risk that the contact causes fluctuations in tension and fluctuations in the conveyance speed. Therefore, here, even if the continuous paper P is pushed sideways by the air blown from the fan 22, the continuous paper P is prevented from coming into contact with the inner wall surface of the storage box 11 due to the air blow. The air volume (rotational speed of the fan 22), the arrangement position of the support roll 23, and the like are adjusted, and L / 2 = 3 so that the support roll 23 is at the center of the minimum folding length paper L (for example, 7 inches). .5 inch position.

  The continuous paper P drawn out while receiving the cross wind from the storage box 11 is stabilized in the direction of conveyance by the guide member 21, and further conveyed further downstream via the back tension roll 29 shown in FIG. Is done.

  FIG. 8 is a diagram showing the arrangement positions of the fans. Unlike FIG. 1 and FIG. 7, FIG. 8 shows the position of the fan 22 when the paper storage unit 10 is viewed from the fan 22 side.

  In the printing apparatus 1 of the present embodiment, three types of continuous forms of a minimum sheet width W1 (for example, 6.5 inch width), an intermediate sheet width W2 (for example, 15 inch width), and a maximum sheet width W3 (for example, 18 inch width). Paper P can be used.

  Therefore, in this embodiment, two fans 22A and 22B are arranged.

  When the continuous paper P having the minimum paper width W1 is used, only one of the two fans 22A and 22B acts on the continuous paper P. For this reason, the amount of air blown from the fan 22A is such that the continuous paper P being drawn from the storage box 11 containing the continuous paper P with the minimum paper width W1 is the continuous paper P with the minimum paper width W1. The air volume is set so as not to come into contact with the inner wall surface of the storage box 11 that stores the container.

When the continuous paper P having the intermediate paper width W2 or the maximum paper width W3 is used, both the two fans 22A and 22B act on the continuous paper P. For this reason, with respect to the fan 22B, the air volume balance in the paper width direction is not lost due to the air volume of the fan 22A, and the continuous paper P having the intermediate paper width W2 or the maximum paper width W3 is pulled out from the storage box 11. The air volume is set on the condition that the inner wall surface of the storage box 11 storing the continuous paper P is not contacted.
(Paper dust removal device)
Next, the paper dust removing device 40 will be described.

  The paper dust removing device 40 is an example of a removing unit, and plays a role of removing paper dust conveyed by an air flow accompanying conveyance of the continuous paper P. The paper dust removing device 40 is disposed upstream of the printing machine 60 in the conveyance direction of the continuous paper P, and reduces paper dust conveyed to the printing machine 60 to prevent image defects. .

  FIG. 9 is a schematic configuration diagram of the paper dust removing device.

  The paper dust removing device 40 includes a reflux forming unit 41 and a paper dust collecting unit 42.

  Here, the reflux forming part 41 includes a facing part 411 and an extending part 412. The facing unit 411 faces the continuous paper P with a space S between the continuous paper P being conveyed. In addition, the extending portion 412 extends from the portion of the facing portion 411 on the downstream side in the transport direction of the continuous paper P toward the continuous paper P and obliquely toward the upstream side in the transport direction. It extends to the vicinity. As long as this extended part 412 does not contact the continuous paper P, it is preferable to extend as close as possible to the continuous paper P. Specifically, since the paper powder carried by the airflow accompanying the conveyance of the continuous paper P is carried by the air layer of about 6 mm from the continuous paper P, the extending portion 412 is 6 mm on the continuous paper P. It is preferable to extend until it comes closer. Here, the extended portion 412 extends obliquely toward the upstream side in the transport direction toward the continuous paper P, but the extended portion 412 extends perpendicularly to the continuous paper P. May be.

  The reflux forming unit 41 peels the paper powder d, which has been conveyed by the airflow accompanying the conveyance of the continuous paper P, from the continuous paper P by the extending portion 412, and between the continuous paper P and the facing portion 411. It is held in the space S and refluxed to guide the airflow including the paper dust d to the paper dust collecting unit 42.

  The paper dust collecting unit 42 includes a dust collection filter 421 and a fan 422. The airflow guided to the paper dust collecting unit 42 is collected by the dust collecting filter 421 and the paper dust d in the airflow is finally exhausted to the outside of the printing apparatus 1 by the fan 422.

  Since the paper dust removing device 40 of the present embodiment includes the reflux forming unit 41 having the above-described configuration, the reflux forming unit 41 prevents the paper dust from being confined in the space S and greatly diffused. Therefore, paper dust is efficiently recovered by the paper dust recovery unit 42.

  FIG. 10 is a schematic diagram showing a first modification of the paper dust removing device.

  In the description of the first modified example and the second and third modified examples described later, the same or corresponding components as those of the paper dust removing device 40 shown in FIG. Differences from the paper dust removing device 40 shown in FIG. 9 will be described with the same reference numerals.

  A hollow slit 412a that is open at the tip adjacent to the continuous paper P is formed in the extending part 412 that constitutes the reflux forming part 41 of the paper dust removing device 40A of the first modification shown in FIG. The hollow slit 412a is connected to an air flow path 43 that takes in air from the air outlet side of the fan 422 provided in the paper dust collecting unit 42 and flows the air into the hollow slit 412a. As a result, air is blown out from the opening 412b at the front end portion of the extending portion 412 on the side close to the continuous paper P.

  In the case of this first modification, an air curtain is formed between the extending portion 411 and the continuous paper P by this air blowing, and the printing machine passes through the gap between the extending portion 411 and the continuous paper P. The paper dust d flowing to the 60 (see FIG. 1) side can be reduced, and the paper dust d can be efficiently refluxed toward the paper dust collecting unit 42. That is, in the case of this first modification, paper dust is collected more efficiently than the paper dust removing device 40 shown in FIG.

  FIG. 11 is a schematic view showing a second modification of the paper dust removing device.

  A slit 411a is formed at a position immediately above the space S side of the extending portion 412 in the facing portion 411 constituting the reflux forming portion 41 of the paper dust removing device 40B of the second modified example shown in FIG. A fan 413 is provided immediately above the slit 411a. When the fan 413 is operated, air flows through the slit 411a and an air flow that flows toward the continuous paper P along the space S side of the extending portion 412 is generated, and the air flow causes air to flow into the continuous paper P. Is sprayed.

  Also in the case of the second modification, as in the case of the first modification shown in FIG. 10, an air curtain is formed between the extension part 411 and the continuous paper P by this air flow, and the extension part 411. Paper dust d flowing to the printing press 60 (see FIG. 1) through the gap between the paper and the continuous paper P is reduced, and the paper dust d is efficiently recirculated toward the paper dust collecting unit 42. it can.

  FIG. 12 is a schematic view showing a third modification of the paper dust removing device. Here, FIG. 12A is a side view seen from the same direction as FIG. 9 to FIG. 11, and FIG. 12B is a plan view seen from the top of the continuous paper P.

  The reflux forming portion 41 constituting the paper dust removing device 40C of the third modified example is a region corresponding to the width direction end portion of the continuous paper P where the feed hole 12 (see also FIG. 2) is formed. Only installed. Here, only the paper dust removing device installed in the region corresponding to one end of the continuous paper P is shown, but in the region corresponding to the other end in the width direction of the continuous paper P. In addition, a paper dust removing device symmetrical to the paper dust removing device 40C shown here is installed.

  As described above, a projection (not shown) of the tractor 30 (see FIG. 1) is fitted into the feed hole 12, and the continuous paper P is conveyed by the projection. For this reason, the feed holes 12 are rubbed by the protrusions, and paper dust is likely to be generated. Further, when the continuous paper P is manufactured, paper dust is generated when the continuous paper P is cut or the feed holes 12 are formed, and the paper is entered into the storage box 11 together with the continuous paper P.

  The paper dust removing device 40C of the third modified example shown in FIG. 12 aims at the end in the width direction of the continuous paper P provided with the feed holes 12, and focuses on collecting the paper dust of that portion. It is.

  Further, the paper dust collecting unit 42 of the paper dust removing device 40C of the third modification is installed on the outer side in the width direction of the continuous paper P, and the air inlet 42a for sucking air faces the continuous paper P. In the case of the third modification, the air current is positively directed to the suction port 42a side of the paper dust collecting unit 42 by the fan 422 and sucked from the suction port 42a. The fan 422 in the third modified example is an example of an intake section.

  In the third modified example, the paper dust collecting unit 42 is installed at a position deviated from the continuous paper P in the width direction, so that paper dust collected near the suction port 42a is not deposited on the continuous paper P. It can be prevented that the image is easily dropped and leads to an image defect.

In addition, in the 3rd modification shown in this FIG. 12, although the recirculation | reflux formation part 41 is installed only in the area | region corresponding to the width direction edge part of the continuous paper P, the recirculation | reflux formation part 41 which spreads in the whole width direction is provided. The paper dust collecting unit 42 may be installed at a position deviated from the continuous paper P in the width direction, as shown in FIG.
(Printer maintenance device)
Next, the printing press maintenance apparatus 50 shown in FIG. 1 will be described.

  The printing machine 60 is a so-called inkjet type printing machine that prints an image on the continuous paper P by ejecting ink from the ejection port 61a. In the printing machine 60 of this embodiment, a large number of such nozzles 61 are arranged in a line in the width direction of the continuous paper P (direction perpendicular to the paper surface of FIG. 1), and an image is printed by these many nozzles 61. This type of printing machine.

  Here, when printing is paused, a cap is placed on the discharge port 61a for moisture retention. Further, since ink is attached to the discharge port 61a and is wet, dust such as paper dust is likely to be attached, which may cause deterioration in printing quality. For this reason, it is necessary to always clean the discharge port 61a by wiping off the discharge port 61a of the nozzle 61 from time to time.

  The printing press maintenance device 50 in the present embodiment is an example of a maintenance unit, and is a device that serves both to cover the discharge port 61a of the nozzle 61 and to wipe the discharge port 61a.

  The printing press 60 is raised in the direction of arrow U shown in FIG. 1 and held at the standby position when printing is paused. When the printing machine 60 starts printing, the printing machine 60 moves down to the printing position facing the continuous paper P in the direction of arrow D shown in FIG. FIG. 1 shows the printing press 60 in the printing position.

  The printing press maintenance device 50 can reciprocate in the direction of arrows A-B shown in FIG. 1, and when the printing press 60 is in the printing position, it is in the retreat position shown in FIG. . Then, this printing press maintenance device 50 pauses printing, and when the printing press 60 rises in the direction of arrow U, the printing press maintenance device 50 moves forward in the direction of arrow A, enters under the printing press 60, covers the nozzle 60, and covers the cap. Perform the action. Then, the printing press maintenance apparatus 50 moves in the direction of arrow B and retracts to the retracted position prior to the start of printing, and the printing press 60 descends to the printing position in the direction of arrow D.

  FIGS. 13, 14, and 15 are a perspective view, a plan view, and a front view, respectively, of the printing press maintenance apparatus according to the present embodiment.

  The printing press maintenance apparatus 50 includes a cover 51 that acts as a cap for the nozzle 61 and a cleaning unit 52 that cleans the nozzle 61 by wiping it.

  The cover 51 is formed with a recess 511 extending in the width direction of the continuous paper P (direction perpendicular to the paper surface of FIG. 1), and a sponge 512 containing moisture is disposed in the recess 511. Yes. As the printing press 60 descends and the nozzle 61 enters the recess 511, the nozzle 61 is covered with a cap. A waste liquid discharge pipe 513 extends beside the recess 511. Ink may be discharged from the discharge port 61a of the nozzle 61 into the recess 512 so that the ink in the nozzle 61 does not solidify. The water contained in the sponge 512 and the discharged ink are collected through the waste liquid discharge pipe 513. The water supply to the sponge 512 is performed by a water supply device (not shown) when the printing press maintenance device 50 is in the retracted position shown in FIG.

  The cleaning unit 52 is also provided with a long groove 521 extending in the width direction of the continuous paper P. The cleaning unit 52 is provided with a wiping device 53 for wiping the discharge port 61 a (see FIG. 1) of the nozzle 61. The wiping device 53 moves along the long groove 521 of the cleaning unit 51 in the direction of the arrow FR shown in FIGS.

  In cleaning the discharge port 61 a of the nozzle 61, the printing press maintenance device 50 is moved and stopped so that the nozzle 61 is positioned immediately above the long groove 521. Next, the wiping device 53 is moved along the long groove 521. Then, the wiping member 531 provided in the wiping device 53 wipes the discharge port 61 a of the nozzle 61.

  A wiping member wiping portion 54 is provided at the end of the long groove 521 on the left side in FIG. The wiping member wiping portion 54 is provided with a cleaning member 541 that wipes off dirt on the wiping member 531 provided in the wiping device 53. In FIG. 13, the wiping device 53 is almost hidden under the cleaning member 541 and is not shown. On the other hand, in FIG. 14, the wiping device 53 is in a position slightly moved in the arrow R direction from the state hidden under the cleaning member 541, and the wiping device 53 appears in FIG. 14. Details of the wiping device 53 will be described later.

  The printing press maintenance apparatus 50 is provided with two motors 55 and 56. One motor 55 is a motor for moving the printing press maintenance apparatus 50 in the direction of arrows AB shown in FIG. The other motor 56 is provided in the wiping device 53 and moves the wiping device 53 in the direction of the arrow FR along the long groove 512.

  In the printing press maintenance device 50, the relative height between the cover 51 and the cleaning unit 52 becomes a problem. As shown in FIG. 15, the wiping member 531 provided in the wiping device 53, which is a constituent element of the cleaning unit 52, wipes off the discharge port 61 a at the lower end of the nozzle 61 and is slightly smaller than other members. High position. On the other hand, the printing press 60 has a size sufficient to overlap the cleaning portion 52 in a situation where the cover portion 51 of the printing press maintenance device 50 is located immediately below the nozzle 61 of the printing press 60. For this reason, if this printing machine 60 tries to descend to a prescribed height at which the discharge port 61a of the nozzle 61 is sufficiently covered by the cover 51, the printing machine 60 will hit the wiping member 531 while descending.

  On the other hand, if the wiping member 531 is installed at a position lower than the cover portion 51, the cover portion 51 can sufficiently cover the discharge port 61a of the nozzle 61, but this time the cover portion 531 gets in the way, and the nozzle Thus, sufficient wiping cannot be performed by applying the wiping member 531 to the discharge outlet 61a of 61.

  In order to solve this, it is conceivable that the wiping device 53 or the wiping member 531 is moved up and down by a motor. However, in this case, a motor is newly provided, and a mechanism for moving the wiping device 53 or the wiping member 531 up and down is required, which complicates and increases the size and inevitably increases the cost.

  In contrast, in the present embodiment, the height of the wiping member 531 is changed as described below.

  FIG. 16 is a perspective view of a wiping member constituting the wiping device.

  The wiping member 531 has a configuration in which a wiping blade 531a is supported by a support member 531b. The support member 531b is provided with a positioning projection 531c. The wiping device 53 wipes the discharge ports 61a (see FIG. 1) of the nozzles 61 arranged in a line by rubbing with the wiping blade 531a.

  17 and 18 are a right side view and a cross-sectional view taken along arrows XX shown in FIG. 17, respectively, of the wiping member assembly incorporating the wiping member.

  As shown in FIG. 18, the wiping member 531 shown in FIG. 16 is fixed to the wiping member assembly 532 by being positioned by the protrusion 531c of the support member 531b and pressed by the leaf spring 533. The wiping member 531 is a consumable item and needs to be replaced. Therefore, here, a fixing method such as screwing is avoided to facilitate replacement of the wiping member 531 which is a consumable item.

  Further, the wiping member assembly 532 is supported at the center in the longitudinal direction so as to be slightly rotatable in the directions of arrows R1-R1 shown in FIG. 17 and is pulled by a coil spring 534. When the wiping member 531 is tilted, the coil spring 534 is extended, and a force for returning to a posture without tilting acts. The wiping member 531 needs to be applied to the discharge port 61a (see FIG. 1) of the nozzle 61. For this reason, here, the tolerance of the attachment error etc. between the nozzle 61 and the wiping apparatus 53 is raised, and the device which makes the wiping member 531 reliably apply to the discharge outlet 61a of the nozzle 61 is made.

  As shown in FIG. 18, the wiping member assembly 532 includes an arm 535 to which an arm 536 (see also FIG. 17) is fixed. The arm 536 fixed to the arm 535 serves as a rotation center with respect to the support member 538 when the wiping member assembly 532 is attached to a support member 538 described later.

  As shown in FIG. 17, the wiping member assembly 532 has two arms 536 and 537 that protrude in the longitudinal direction.

  19 and 20 are a front view and a left side view, respectively, in a state where the wiping member assembly shown in FIGS. 17 and 18 is supported by a support member.

  One arm 536 of the left and right arms 536 and 537 (see also FIG. 17) provided in the wiping member assembly 532 is rotatable to the support member 53 as shown in FIG. The other arm 537 penetrates the long hole 538a (see FIG. 19) of the support member 538. The support member 538 is provided with an arm 538b protruding left and right, and a coil spring 539 is bridged between the arm 538b and the arm 537 of the wiping member assembly 532 that has penetrated the long hole 538a. Yes.

  As shown in FIG. 19, the wiping member assembly 532 is supported in a slightly inclined posture with respect to the support member 538, and can further rotate around the arm 536 from the supported posture. . In FIG. 19, the posture before the rotation of the wiping member assembly 532 is shown by a solid line, and the distal end portion of the wiping member 531 (wiping blade 531a) in the rotated posture and the coil spring 539 in an extended state are shown. It is indicated by a dashed line.

  FIG. 21 is a left side view showing the post-rotation posture of the wiping member assembly.

  On the other hand, FIG. 20 described above is a left side view of the wiping member assembly in a posture before rotation.

  As can be seen from FIGS. 20 and 21, when the wiping member assembly 532 rotates, the wiping member 531 incorporated in the wiping member assembly 532 also rotates, but the wiping member 531 rotates. However, it has a structure that lowers its height. That is, before the wiping member assembly 532 including the wiping member 531 rotates, the wiping blade 531a of the wiping member 531 is at a higher position than the cover portion 51 (see FIGS. 13 to 15). After the rotation, it is lowered to a position lower than the cover portion 51. In other words, the wiping member 531 is wiped while rubbing the discharge port 61a of the nozzle 61 when it is in a high position before rotation, and in the rotated state, the cover 51 does not interfere with the cover of the discharge port 61a of the nozzle 61. The height is lowered to the position. The wiping member assembly 532 is in the second posture after rotation when a force in the rotating direction is applied, and returns to the first posture before rotation by the action of the coil spring 539 when the force is released.

  The wiping member assembly 532 supported by the support member 538 moves in the direction of the arrow FR shown in FIGS. 13 and 14 by the rotation of the motor 56 shown in FIGS.

  FIG. 22 is a diagram illustrating the operation of the wiping member assembly approaching the wiping member wiping portion.

  FIG. 23 is a perspective view showing the wiping member assembly when it has moved to the wiping member wiping portion.

  In the wiping member wiping portion 54 (see also FIG. 13 and FIG. 14), the wiping blade 531a of the wiping member 531 shown in FIG. 16 is wiped to clean the wiping blade 531a. A cleaning member 541 is provided.

  In FIG. 22, the wiping member assembly 532 is shown by both a solid line and a one-dot chain line. The solid line wiping member assembly 532 shows a state immediately after the wiping member assembly 532 has moved in the direction of arrow F (see also FIGS. 13 and 14) and has contacted the cleaning member 541. . Further, the wiping member assembly 532 indicated by a one-dot chain line shows a state in which the wiping member assembly 532 is further moved in the direction of arrow F and the wiping member assembly 532 is pushed by the cleaning member 541 and rotated. .

  FIG. 23 shows the wiping member assembly in the second posture after rotation, which is indicated by a dashed line in FIG. However, the cleaning member 541 shown in FIG. 22 is not shown in FIG. 23 so that the post-rotation posture of the wiping member assembly 532 appears.

  The cleaning unit 52 shown in FIGS. 13 and 14 includes a rack 522 and a guide bar 523 shown in FIG. 23 that extend along the long groove 521.

  A rotation shaft of the motor 56 shown in FIG. 13 is provided with a pinion gear 561 that meshes with the rack 522. The frame of the motor 56 is fixed to the support member 538. For this reason, the wiping member 532 moves in the direction of the arrow RF together with the motor 56 by the rotation of the motor 56.

  The wiping member assembly 532 in a posture inclined by being pushed by the cleaning member 541 as shown by the alternate long and short dash line in FIG. 22 moves in the direction of the arrow R and moves away from the cleaning member 541. It returns to the posture and proceeds along the long groove 521. Then, when proceeding to the forefront of the arrow R direction, the arm 537 of the wiping member assembly 532 is now applied to the abutting member 529 provided at the end of the long groove 521 in the arrow R direction (see FIG. 13). When it hits, it becomes the 2nd posture inclined again. As described above, the wiping member assembly 532 according to the present embodiment rotates both on the front side where the wiping member wiping portion 54 is provided and on the rear side where the abutting member 529 is provided. The second posture is inclined. Therefore, even if the wiping member assembly 532 is moved to either the front side or the rear side, the wiping member assembly 532 has a height that does not hinder the operation of the cover portion 51 covering the discharge port 61a of the nozzle 61. However, in this embodiment, since the operation sequence shown below is adopted, the rear side where the abutting member 529 is provided is set as the initial position of the wiping member assembly 532.

  When wiping the discharge port 61 a of the nozzle 61, the printing press maintenance device 50 is first moved so that the cover 51 is positioned directly below the nozzle 61, so that ink droplets can be generated at the discharge port 61 a of the nozzle 61. Ink is ejected from the ejection port 61a. This is because dust such as paper dust has entered the nozzle 61 from the discharge port 61a of the nozzle 61 in order to remove the dust. In addition, the reason why the cover 51 is disposed immediately below the nozzle 61 is to prepare for the case where ink drops.

  Thereafter, the printing press maintenance apparatus 50 is moved so that the cleaning unit 52 is located immediately below the nozzle 61. Then, the wiping member assembly 532 at the initial position is moved toward the front side (direction of arrow F). The wiping member assembly 532 in the initial position is in the second posture inclined by being abutted against the abutting member 529, but started to move toward the front side, and then stood up when it separated from the abutting member 529. First posture. And in the 1st attitude | position which stood up, the wiping blade 531a of the wiping member 531 wipes off the discharge outlet 61a of the nozzle 61 located in a line form. Then, when the wiping is completed and the wiping member assembly 532 reaches the front side, the wiping blade 531a of the wiping member 531 is wiped by the cleaning member 541 provided on the front side. Thereafter, the wiping member assembly 532 returns to the initial position on the rear side, and waits in a second posture inclined against the abutting member 529. After that, the printing press maintenance device 50 is moved so that the cover 1 is directly below the nozzle 61, the printing press 60 is lowered, and the discharge port 61 a of the nozzle 61 is covered with the cover 51. As a result, the printing press 60 enters a standby state in which the outlet 61a of the nozzle 61 is cleaned by wiping and is covered with the cover 51 and moisturized.

  Here, the rear side is the initial position of the wiping member assembly 532, but the wiping member assembly 532 is also connected to the cleaning member 541 provided in the wiping member wiping portion 54 on the front side. Since the second posture is inclined even if it strikes, this front side may be set as the initial position of the wiping member assembly 532.

  As described above, in this embodiment, the wiping member 531 has a height for wiping the discharge port 61a of the nozzle 61 in the first posture in which the wiping member assembly 532 is raised, and is inclined when moved to the front side or the rear side. The height is set so as not to interfere with the cover 51 covering the discharge port 61a of the nozzle 61 in the second posture. Therefore, in this embodiment, a mechanism for moving the wiping device 53 or the wiping member 531 up and down with a motor is unnecessary, which contributes to simplification of the device and cost reduction.

DESCRIPTION OF SYMBOLS 1 Printing position 10 Paper storage part 11 Storage box 20 Paper drawer stabilization apparatus 21 Guide member 22, 22A, 22B, 413, 422 Fan 23 Support roll 30 Tractor 40, 40A, 40B, 40C Paper dust removal apparatus 41 Reflux formation part 42 Paper dust collecting unit 42a Suction port 50 Printing machine maintenance device 51 Cover unit 52 Cleaning unit 53 Wiping device 54 Wiping member wiping unit 60 Printing machine 61 Nozzle 61a Discharge port 70 Guide device 71 First guide unit 72 Second guide unit DESCRIPTION OF SYMBOLS 80 Drive apparatus 81 Drive roll 91 Paper passing switching mechanism 100 Control apparatus 101 User interface 411 Opposite part 411a Slit 412 Extension part 412a Hollow slit 412b Opening 421 Dust collection filter 511 Depression part 512 Sponge 513 Waste liquid discharge pipe 521 Long groove 529 Impact member 531 Wiping member 53 a Blade 531b, 538 Support member 532 Wiping member assembly 534, 539 Coil spring 535, 536, 537 Arm 541 Cleaning member 701 Guide portion 702 Guide frame 705 Lifting mechanism 706 Groove 707 Guide pole 709 Screw shaft 711, 721 Roll 712, 723 Guide roller 714 Coupling recess 722 Coupling projection

Claims (3)

A cover portion that has a discharge port for discharging liquid and covers the discharge port of a printing press that discharges the liquid from the discharge port and prints an image of the liquid on paper;
A wiping member that comes into contact with the discharge port when moved to the first position facing the discharge port and wipes off the liquid in the discharge port, and the wiping member is moved to the first position when moved to the first position. A urging member that urges the first posture in contact with the cleaning portion, and a cleaning unit including a cleaning device that moves via the first position;
Posture change that changes the posture of the wiping member to a second posture that does not interfere with the cover portion covering the discharge port, in contact with the cleaning device that has moved to the second position that is out of the first position. And a printing press maintenance device.   The wiping member wiping portion disposed in the second position and wiping the wiping member in contact with the wiping member of the cleaning device that has moved to the second position is provided. The printing press maintenance apparatus according to 1. A transport unit for transporting paper;
A printing unit that has a discharge port for discharging liquid and discharges the liquid from the discharge port to print an image of the liquid on paper;
A maintenance section that can freely advance and retreat at a position facing the discharge port;
The maintenance department
A cover that covers the discharge port of the printing machine so as to be exposed;
A wiping member that contacts the discharge port when moving to the first position facing the discharge port, and wipes off the liquid in the discharge port; and the wiping member that moves to the first position when moved to the first position An urging member that urges the first posture to contact, and a cleaning unit that moves via the first position;
Posture change that changes the posture of the wiping member into a second posture that does not interfere with the cover portion covering the discharge port, in contact with the cleaning portion that has moved to the second position that is out of the first position. A printing apparatus.

Images