JP2013056541A - Wiping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and completely wash a wiping roller though a simple composition.SOLUTION: A wiping device includes: the wiping roller 19 that touches a rotatably supported intaglio cylinder 8 and removes the surplus ink of the ink supplied to the intaglio cylinder 8; a first wiping pad 32 that removes the surplus ink on the wiping roller 19 by wiping liquid by touching the wiping roller 19; a second wiping pad 33 that is provided at the downstream side in the rotation direction of the wiping roller 19; an external jet nozzle 34 and a jet nozzle 32C that supply the wiping liquid to the wiping roller 19 or the first wiping pad 32; and a jet nozzle 33C that supplies the wiping liquid to the wiping roller 19 or the second wiping pad 33 so that supply can be made to the downstream side in the rotation direction more than the jet nozzle 32C and to the upper stream side in the rotation direction of the wiping roller 19 more than the second wiping pad 33.

Description

  The present invention relates to a wiping device for removing excess ink, and more particularly to a wiping device suitable for use in an intaglio printing press.

  Conventionally, in a wiping device for an intaglio printing press, the cleaning liquid is not stored in the liquid tank, and the cleaning liquid is ejected from the nozzle holes of a plurality of spray pipes arranged along a plurality of support shafts toward the peripheral surface of the wiping roller. The wiping roller is cleaned by three thin plate pads 21 and one flocking group 19 (see, for example, Patent Document 1).

Utility model registration number 252216

  By the way, in the wiping device of the intaglio printing press described above, in order to completely remove the surplus ink adhering to the peripheral surface of the wiping roller which scraped off the surplus ink of the intaglio cylinder, three thin plate pads 21 and one There is a problem that the flocking group 19 is required and its configuration is complicated.

  The present invention has been made to solve such a problem, and an object of the present invention is to propose a wiping apparatus capable of efficiently and completely cleaning the wiping roller with a simple configuration.

  In order to solve such a problem, in the wiping apparatus of the present invention, a wiping roller that contacts the intaglio cylinder supported rotatably and removes excess ink of the ink supplied to the intaglio cylinder, and a contact with the wiping roller are contacted. A wiping roller cleaning member for removing the excess ink on the wiping roller with a wiping liquid, wherein the wiping roller cleaning member includes a first wiping member and the wiping roller more than the first wiping member. A second wiping member provided on the downstream side in the rotation direction and a contact portion where the first wiping member is in contact with the wiping roller on the upstream side in the rotation direction of the wiping roller with respect to the first wiping member. The wiping roller or the first wiping so that it can be fed to A first wiping liquid supply device that supplies the wiping liquid to the material, and the wiping liquid is applied to the first wiping member at a location downstream of the first wiping liquid supply device in the rotational direction of the wiping roller. A second wiping liquid supply device to be supplied, and at a location downstream of the second wiping liquid supply device in the rotation direction of the wiping roller, or upstream of the second wiping member in the rotation direction of the wiping roller, or A third wiping liquid supply device that supplies the wiping liquid to the wiping roller or the second wiping member so that the second wiping member can be supplied to a contact portion that contacts the wiping roller; Be prepared.

  According to the present invention, a simple configuration using only the first wiping member and the second wiping member, but the upstream direction of rotation of the wiping roller by the first wiping liquid supply device and the second wiping liquid supply device is provided. The wiping roller is roughly cleaned by the first wiping member in a state where a large amount of wiping liquid is supplied to the side to promote the dissolution of excess ink in advance, and then the wiping roller is driven by the third wiping liquid supply device. Since the wiping roller can be finished and cleaned by the second wiping member while supplying the wiping liquid to the downstream side in the rotation direction, the wiping roller can be efficiently and completely cleaned with a simple configuration.

It is a side view which shows the structure of the intaglio printing press in one embodiment which concerns on this invention. It is the side view to which the wiping apparatus shown in FIG. 1 was expanded.

  Next, an embodiment of the present invention will be described with reference to the drawings.

(1) Configuration of Intaglio Printing Machine In the intaglio printing press 1 shown in FIG. 1, a paper feeding device 3 as a sheet feeding device on which papers 2 as sheets are stacked is separated from an upper layer by a sucker mechanism of the paper feeding device 3. A feeder board 4 that conveys the paper 2 that has been sent out one by one is notified. The feeder board 4 is provided with a swing device 5 that swings in addition to the paper 2 on the feeder board 4.

  The swing device 5 is communicated via a transfer drum 7 in which a pressure drum 6 as a triple drum having three gripping claws arranged at equal intervals along the circumferential direction is opposed. The impression cylinder 6 and the transfer cylinder 7 are rotatably supported by a pair of frames. The transfer cylinder 7 is provided with a holding claw similar to the holding claw of the impression cylinder 6, and the paper 2 delivered from the swing device 5 is transferred from the holding claw of the transfer cylinder 7 to the holding claw of the impression cylinder 6. .

  An intaglio cylinder 8 serving as a triple cylinder, which is rotatably supported by a pair of frames 23 and to which three intaglio plates are attached along the circumferential direction, is opposed to the impression cylinder 6. The intaglio cylinder 8 is opposed to an ink collecting cylinder 9 as a quadruple cylinder to which four rubber blankets are attached along the circumferential direction. The ink collecting cylinder 9 is rotatably supported by a pair of frames 24.

  In the ink collecting cylinder 9, five pattern rollers (chavron cylinders) 10 having a single circumferential surface corresponding to the length of the blanket of the impression cylinder 6 and the intaglio surface of the intaglio cylinder 8 are arranged opposite to each other in the circumferential direction. Is done. Each pattern roller 10 is rotatably supported by a pair of frames 24.

  Corresponding to these pattern rollers 10, five ink supply devices 11 are supported by an inker frame 25 that is movably disposed between a solid line position and a two-dot chain line position shown in FIG. Each ink device 11 has an ink fountain (not shown) filled with different inks, and each color ink from each ink fountain is supplied to the ink collecting cylinder 9 via each roller group and each pattern roller 10. That is, in the intaglio printing machine 1, five pairs of the pattern roller 10 and the ink supply device 11 are arranged on the ink collecting cylinder 9 as a quadruple cylinder.

  A discharge drum 27 is disposed opposite to the pressure drum 6, and one sprocket (not shown) of the discharge device 22 is coaxially provided on the discharge drum 27. A pair of paper discharge chains 22 b are stretched between one sprocket (not shown) and the other sprocket 22 a provided at the rear end of the paper discharge device 22. A paper discharge claw (not shown) is attached to the paper discharge chain 22b at a predetermined interval. A plurality of paper discharge trays 22c as discharge devices are provided on the downstream side of the paper discharge chain 22b in the traveling direction.

  A wiping roller 19 of a wiping device 21 (cylinder cleaning device) is disposed opposite to the intaglio cylinder 8 in a state of being disposed in the wiping tank 20.

  Next, the operation of the intaglio printing machine 1 configured as described above will be described. The sheets 2 fed one by one from the sheet feeder 3 onto the feeder board 4 are transferred from the swing device 5 via the transfer cylinder 7 to the gripping claw of the impression cylinder 6 and conveyed. Ink from each ink supply device 11 is transferred to the ink collecting cylinder 9 via each pattern roller 10 and supplied onto the intaglio plate surface of the intaglio cylinder 8.

  The surplus ink (hereinafter referred to as surplus ink) supplied onto the intaglio surface of the intaglio cylinder 8 is wiped by the wiping roller 19 of the wiping device 21. When the paper 2 passes between the impression cylinder 6 and the intaglio cylinder 8, the ink in the intaglio cylinder 8 is transferred to the paper 2 and printed. Next, the paper 2 is conveyed by the paper discharge chain 22b of the paper discharge device 22 through the paper discharge drum 27 and discharged onto the paper discharge tray 22c.

(2) Configuration of Wiping Device The wiping device 21 in the intaglio printing press 1 will be described with reference to FIG.

  As shown in FIG. 2, the wiping device 21 shown in FIG. 1 has a main body 31 and a wiping liquid supply device 47 that supplies a wiping liquid for cleaning when the wiping roller 19 that contacts the lower portion of the intaglio cylinder 8 is accommodated. And a waste liquid processing device 51 for cleaning (regenerating) the waste liquid of the wiping liquid generated when the wiping roller 19 is washed, and pumps 44, 45, 46, 48, 52. The main body 31 includes a wiping tank 20 as a waste liquid tank, wiping pads 32 and 33 (wiping roller cleaning members) for removing excess ink attached to the peripheral surface of the wiping roller 19, and a drain 41.

  The wiping pad 32 as the first wiping member is provided on the upstream side in the rotational direction below the wiping roller 19, and the wiping pad 33 as the second wiping member is provided on the downstream side in the rotational direction below the wiping roller 19. When the wiping roller 19 wipes excess ink adhering to the intaglio surface of the intaglio cylinder 8, the excess ink adhering to the surface of the wiping roller 19 is removed by the wiping pad 32 and the wiping pad 33.

  The wiping pad 32 includes a pad main body 32a and a pad member 32b including a wire net, a sponge, a metal brush and the like attached on the pad main body 32a. When the wiping pad 32 comes into contact with the rotating wiping roller 19, excess ink attached to the peripheral surface of the wiping roller 19 is removed by the pad member 32 b.

  The wiping pad 32 has an ejection nozzle 32 c as a second wiping liquid supply device that ejects a wiping liquid containing strong alkaline caustic soda in order to remove excess ink attached to the surface of the wiping roller 19. The ejection nozzle 32c is attached to the side surface of the pad main body 32a so that the wiping pad 32 can be supplied to the peripheral surface of the wiping roller 19 from the back side of the pad member 32b. The wiping liquid from the spray nozzle 32 c is sprayed toward the contact surface between the pad member 32 b and the wiping roller 19.

  The main body 31 above the wiping pad 32 is externally provided as a first wiping liquid supply device that injects wiping liquid onto the peripheral surface of the wiping roller 19 upstream of the wiping pad 32 in the rotational direction of the wiping roller 19. The spray nozzle 34 is attached to the peripheral surface upstream of the wiping pad 32 in the rotational direction of the wiping roller 19. The wiping liquid from the external spray nozzle 34 is directly sprayed onto the peripheral surface of the wiping roller 19.

  Although the wiping liquid is ejected from the external ejection nozzle 34 on the upstream side of the wiping pad 32 in the rotational direction of the wiping pad 32, the present invention is not limited to this, and the pair of the pad member 32 b of the wiping pad 32 and the wiping roller 19 is not limited. You may make it inject directly to a contact location.

  The wiping pad 33 is provided downstream of the wiping pad 32 in the rotation direction of the wiping roller 19. The wiping pad 33 includes a pad main body 33a and a pad member 33b including a wire net, a sponge, a metal brush and the like attached on the pad main body 33a. When the wiping pads 32 and 33 come into contact with the rotating wiping roller 19, the residual ink after the excess ink is removed by the pad member 32 b of the wiping pad 32 is completely removed by the pad member 32 b of the wiping pad 33. .

  An ejection nozzle 33 c as a third wiping liquid supply device that ejects the wiping liquid is attached to the tip position of the pad member 33 a in the wiping pad 33. The attachment position of the ejection nozzle 33c is located downstream of the ejection nozzle 32c of the wiping pad 32 in the rotational direction of the wiping roller 19 and upstream of the pad member 33b in the rotational direction of the wiping roller 19. That is, the spray nozzle 33 c is attached so as to face at least one of the wiping pad 33 and the peripheral surface of the wiping roller 19 in the vicinity of the wiping pad 33. Thus, the wiping liquid is ejected from the ejection nozzle 33c toward the first contact surface between the pad member 33b and the wiping roller 19.

  Although the wiping liquid is directly sprayed from the spray nozzle 33c to the contact portion between the pad member 33b and the wiping roller 19, the wiping is not limited to this, and the wiping on the upstream side of the pad member 33b in the rotational direction is not limited thereto. The wiping liquid may be sprayed on the peripheral surface of the roller 19.

  In the wiping pad 32, the wiping liquid is sprayed to the peripheral surface of the wiping roller 19 from two locations of the spray nozzle 32 c and the external spray nozzle 34. This is because the excess ink adhering to the surface of the wiping roller 19 is dissolved by a large amount of wiping liquid at the first cleaning stage by the wiping pad 32 arranged upstream of the wiping pad 33 in the rotation direction of the wiping roller 19. This is because it needs to be easily removed.

  The external ejection nozzle 34 and the ejection nozzle 32c supply a large amount of wiping liquid to the peripheral surface of the wiping roller 19 to which the excess ink removed from the intaglio cylinder 8 is adhered, and promote the dissolution of the excess ink. Further, the ejection nozzle 32c ejects wiping liquid onto the pad member 32b, thereby preventing clogging of the excess ink scraped from the peripheral surface of the wiping roller 19 into the pad member 32b, and always maintaining a high scraping effect. To do.

  The ejection nozzle 33c serves to sufficiently wet the pad member 33b of the wiping pad 33 for performing finish removal for removing the residual ink of the excess ink that cannot be completely removed by the pad member 32b of the wiping pad 32 with the wiping liquid.

  The wiping pad 32 performs rough removal by first scraping off and removing excess ink adhering to the surface of the wiping roller 19. In this case, since the excess ink is melted by a large amount of wiping liquid supplied in advance by the external spray nozzle 34 and the spray nozzle 32c, the scraping effect is enhanced. Further, clogging of excess ink with respect to the pad member 32b is prevented by the wiping liquid from the ejection nozzle 32c, so that a high scraping effect is always maintained as rough removal.

  The wiping pad 33 performs finish removal in which the residual ink after the excess ink is removed by the pad member 32b of the wiping pad 32 is completely removed by the pad member 33b. In this case, the resin peripheral surface of the wiping roller 19 is polished while promoting the melting of the residual ink by the wiping liquid. After the wiping roller 19 is finished and removed by the wiping pad 33, the wiping liquid attached to the peripheral surface of the wiping roller 19 is removed by a doctor blade (not shown). Thereafter, excess ink adhering to the intaglio surface of the intaglio cylinder 8 is wiped.

  For this reason, a rough metal brush or sponge is selected as the pad member 32b of the wiping pad 32 as a material suitable for rough removal. As the pad member 33b of the wiping pad 33, a fine metal brush or sponge is selected as a material suitable for finishing removal. However, the two pad members 32b and 33b may be made of the same material.

  The wiping liquid supply device 47 includes a new liquid tank 47a that stores a wiping liquid used for cleaning, and a waste liquid tank 47b that stores a waste liquid of the wiping liquid (hereinafter referred to as a wiping waste liquid). The new liquid tank 47a stores a wiping liquid that is cleaned and reused or a newly purchased clean wiping liquid (hereinafter referred to as a new wiping liquid). The waste liquid tank 47a stores the wiping waste liquid in a state in which the wiping waste liquid is separated into a supernatant liquid and a precipitate by storing the wiping waste liquid for a predetermined time.

  The wiping tank 20 of the main body 21 temporarily stores, as a waste liquid tank, the wiping waste liquid 35 that is generated when the excess ink adhering to the surface of the wiping roller 19 is removed by the wiping pads 32 and 33. The wiping waste liquid 35 in the wiping tank 20 is returned to the waste liquid tank 47b via the drain 41 and the pump 45.

  When the storage state of the wiping waste liquid 35 in the waste liquid tank 47b elapses for a predetermined time or more, the ink component contained in the wiping waste liquid 35 is precipitated and separated into a precipitate and a supernatant liquid. The separated supernatant liquid is sucked up by the pump 46 and supplied to the external injection nozzle 34 and the injection nozzle 32 c of the wiping pad 32. On the other hand, the liquid containing the precipitate of the wiping waste liquid 35 in the waste liquid tank 47 b (hereinafter referred to as “precipitated liquid”) is discharged to the waste liquid processing apparatus 51 via the pump 48.

  In the waste liquid processing apparatus 51, the wiping liquid cleaned from the precipitation liquid is regenerated by filtering and cleaning the precipitation liquid of the wiping waste liquid 35 discharged from the waste liquid tank 47b of the wiping liquid supply apparatus 47. The cleaned wiping liquid is returned to the new liquid tank 47 a of the wiping liquid supply device 47 through the pump 52.

  In the present embodiment, the wiping waste liquid 35 is not discarded as it is, but is reused via the waste liquid tank 47b of the wiping liquid supply device 47, or via the waste liquid tank 47b and the waste liquid treatment device 51. Thereby, complicated operations such as replenishment of the wiping liquid and disposal of the wiping waste liquid 35 can be omitted, and the wiping roller 19 can be efficiently cleaned.

(3) Operation of Wiping Device In the wiping device 21 configured as described above, a large amount of wiping liquid is added to the excess ink removed from the intaglio cylinder 8 by the wiping roller 19 using both the external injection nozzle 34 and the injection nozzle 32c. Supply. As a result, the excess ink is roughly removed by the pad member 32b of the wiping pad 32 while accelerating the melting of the excess ink faster than when only the ejection nozzle 32c is used.

  At the same time, the spray nozzle 32 c sprays the wiping liquid onto the pad member 32 b of the wiping pad 32. Thereby, it is prevented in advance that the excess ink scraped off from the peripheral surface of the wiping roller 19 is clogged in the pad member 32b, and a high scraping effect is maintained.

  Next, the spray nozzle 33c sprays the wiping liquid onto the pad member 33b of the wiping pad 33 for finishing removal. As a result, the pad member 33b is wiped off from the peripheral surface of the wiping roller 19 in a state where the pad member 33b is sufficiently moistened with the wiping liquid, thereby performing finish removal.

  At this time, since the wiping pad 32 is for rough removal, the supernatant liquid of the wiping waste liquid 35 is supplied from the waste liquid tank 47b of the wiping liquid supply device 47 to the external injection nozzle 34 and the injection nozzle 32c. Thereby, the pad member 32 b of the wiping pad 32 is roughly removed using the supernatant liquid of the wiping waste liquid 35.

  On the other hand, since the wiping pad 33 is used for finishing and removing the residual ink of the surplus ink, clean wiping liquid is supplied from the new liquid tank 47a of the wiping liquid supply apparatus 47 to the ejection nozzle 33c. Thereby, the pad member 33b of the wiping pad 33 wipes the finish with respect to the wiping roller 19 using a clean wiping liquid.

  The wiping pad 32 roughly removes excess ink adhering to the surface of the wiping roller 19 by using a large amount of the supernatant liquid of the cheap wiping waste liquid 35. Thereby, since the clean wiping liquid in the new liquid tank 47a is not used by the wiping pad 32, consumption of the high-cost clean wiping liquid can be suppressed.

  On the other hand, the wiping pad 33 uses the clean wiping liquid supplied from the new liquid tank 47a of the wiping liquid supply device 47 as much as necessary, and completely removes the residual ink after the excess ink of the wiping roller 19 is removed. To do.

  According to the present embodiment, the wiping device 21 of the intaglio printing machine 1 applies the wiping waste liquid 35 to the excess ink adhering to the peripheral surface of the wiping roller 19 from both the external injection nozzle 34 and the injection nozzle 32c. Supply a large amount of supernatant. Thereby, rough removal is performed by the wiping pad 32 while accelerating the melting of the excess ink. Thereafter, a clean wiping liquid is supplied from the ejection nozzle 33c to the residual ink remaining on the peripheral surface of the wiping roller 19. The residual ink of the surplus ink in which the wiping liquid is sufficiently moistened is wiped off the peripheral surface of the wiping roller 19 by the wiping pad 33 and is removed by finishing.

  Further, a large amount of wiping liquid necessary for rough removal supplied to the wiping pad 32 via the external spray nozzle 34 and the spray nozzle 32 c is secured from the supernatant of the wiping waste liquid 35. Thereby, since it is not necessary to use a clean wiping liquid for rough removal of excess ink, the intaglio cylinder 8 can be reliably washed at low cost.

  Further, the wiping waste liquid 35 is separated into a precipitate and a supernatant liquid in the waste liquid tank 47b of the wiping liquid supply apparatus 47, and the supernatant liquid is reused for rough removal of excess ink. Accordingly, the wiping liquid can be circulated and reused without providing the waste liquid treatment device 51.

(4) Extended example In the above-described embodiment, the case where a large amount of the supernatant liquid of the wiping waste liquid 35 is supplied from the two external injection nozzles 34 and the injection nozzles 32c to the wiping pad 32 has been described. A large amount may be supplied through three or more injection nozzles.

  In the embodiment described above, the supernatant liquid after the wiping waste liquid 35 is separated into the precipitate and the supernatant liquid in the waste liquid tank 47 b is supplied to the wiping pad 32. However, the present invention is not limited to this, and instead of providing the waste liquid tank 47b, the supernatant liquid after storing the wiping waste liquid 35 in the wiping tank 20 for a predetermined time may be supplied to the wiping pad 32. Even when the waste liquid tank 47 b is provided, the supernatant liquid from the waste liquid tank 47 b and the supernatant liquid from the wiping tank 20 may be supplied to the wiping pad 32.

  DESCRIPTION OF SYMBOLS 1 ... Intaglio printing machine, 2 ... Paper, 3 ... Paper feeder, 4 ... Feeder board, 5 ... Swing apparatus, 6 ... Impression cylinder, 7 ... Transfer cylinder, 8 ... Intaglio cylinder, 9 ... Ink collecting cylinder, 10 ... Pattern Roller, 11 ... Ink supply device, 19 ... Wiping roller, 20 ... Wiping tank, 21 ... Wiping device, 22 ... Discharge device, 23, 24 ... Frame, 27 ... Discharge cylinder, 31 ... Main body, 32 ... First Wiping pad, 32C, 33C ... injection nozzle, 33 ... second wiping pad, 34 ... external injection nozzle, 35 ... wiping waste liquid, 41 ... drain, 44, 45, 46, 48, 52 ... pump, 47 ... wiping liquid Supply device, 47A ... new liquid tank, 47B ... waste liquid tank, 51 ... waste liquid treatment apparatus.

Claims (1)

A wiping roller that contacts the intaglio cylinder supported rotatably and removes excess ink from the ink supplied to the intaglio cylinder;
A wiping roller cleaning member for contacting the wiping roller and removing the excess ink on the wiping roller with a wiping liquid;
The wiping roller cleaning member is
A first wiping member;
A second wiping member provided downstream of the first wiping member in the rotational direction of the wiping roller;
The wiping roller or the first wiping so that the wiping roller can be supplied to the upstream side in the rotation direction of the wiping roller relative to the first wiping member or to the contact portion where the first wiping member is in contact with the wiping roller. A first wiping liquid supply device for supplying the wiping liquid to a member;
A second wiping liquid supply device for supplying the wiping liquid to the first wiping member at a location downstream of the first wiping liquid supply device in the rotational direction of the wiping roller;
At a location downstream of the second wiping liquid supply device in the rotational direction of the wiping roller, the upstream side of the second wiping member in the rotational direction of the wiping roller or the second wiping member is connected to the wiping roller. A wiping device comprising: a third wiping liquid supply device that supplies the wiping liquid to the wiping roller or the second wiping member so that the wiping roller or the second wiping member can be supplied to a contact portion that comes into contact.

Images