JP2013018183A - Drum cleaning device of printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum cleaning device of a printer in which a cleaning cloth with one used side can be used by utilizing the other unused side in a simple operation.SOLUTION: A cleaning cloth supplying part 17 having the cleaning cloth 12 taken up cylindrically mounted therein is provided. A cleaning part 18 making the cleaning cloth 12 supplied from the cleaning cloth supplying part 17 into contact with a blanket cylinder 11. A cleaning cloth taken-up part 20 taking out the cleaning cloth 12 having passed through the cleaning part 18 in the taking shaft 19 is also provided. The taking shaft 19 has shaft parts 24 at both ends in the axial direction, with one end 24 shaped so that a rotary driving force is transferable. The cleaning cloth supplying part 17 is provided with a bearing part which has detachable shaft parts 24 of both ends of the taking shaft 19 removed from the cleaning cloth taken-up part 20 after the cleaning cloth 12 has been taken up.

Description

  The present invention relates to a drum cleaning device for cleaning a drum of a printing press using a cleaning cloth.

  2. Description of the Related Art Conventionally, a drum cleaning device for a printing press has a cleaning cloth impregnated with a cleaning liquid in contact with the peripheral surface of the drum such as a blanket cylinder or an impression cylinder of the printing press, and the drum and the cleaning cloth are moved relative to each other. , Removes dirt such as drum ink and paper dust.

  In this drum cleaning device, a double-sided cleaning cloth wound around a winding tube is attached, and cleaning is performed by bringing one side of the cleaning cloth unwound from the winding tube into contact with the drum for cleaning. It is wound on the winding shaft. When all the cleaning cloth using one side has been wound on the winding shaft, remove the winding shaft from the drum cleaning device, remove the cleaning cloth from the winding shaft, and then remove the cleaning cloth from the winding shaft. Is mounted again on the drum cleaning device, and next, the unused cleaning cloth mounted on the drum cleaning device can be wound up (see, for example, Patent Document 1).

JP 2007-283522 A

  Conventionally, a drum cleaning device that uses a cleaning cloth to clean a drum of a printing machine is generally premised on the use of only one side of the cleaning cloth. In many cases, the cleaning cloth is removed from the winding shaft, and the unused surface of the cleaning cloth is not used. This is because if the unused surface of the cleaning cloth is to be used, the cleaning cloth must be rewound from the take-up shaft, which requires labor-intensive work.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a drum cleaning device for a printing press that can use an unused surface of a cleaning cloth using one surface with a simple operation. To do.

  A drum cleaning device for a printing press according to claim 1, wherein the cleaning cloth supply unit to which the cleaning cloth wound in a cylindrical shape is attached, and the cleaning cloth supplied from the cleaning cloth supply unit are brought into contact with the drum of the printing press. The shaft portion at both ends of the cleaning shaft and the winding shaft having shaft portions at both ends in the axial direction and at least one shaft portion having a shape capable of transmitting rotational driving force are detachably attached and attached. A cleaning cloth take-up unit that transmits a rotational driving force to the take-up shaft to rotate the take-up shaft and winds the cleaning cloth that has passed through the cleaning unit onto the take-up shaft, and the cleaning cloth supply unit. A bearing that is detachable from both ends of the take-up shaft removed from the wash cloth take-up portion after winding of the wash cloth, and rotatably supports the take-up shaft on the wash cloth supply portion Part.

  The drum cleaning device for a printing press according to claim 2 is the drum cleaning device for a printing press according to claim 1, wherein the cleaning cloth supply section is directed upward so that the cleaning cloth wound in the cylindrical shape can be mounted. The container is provided with side plates facing both ends of the cleaning cloth wound in the cylindrical shape at both ends, and the bearings are provided in both side plates of the container. It is what.

  The drum cleaning device for a printing press according to claim 3 is the drum cleaning device for a printing press according to claim 1 or 2, wherein a center of a bearing portion of the cleaning cloth supply portion and an outer peripheral surface of the cleaning cloth in the container are opposed to each other. The shortest distance between the inner surface and the inner surface is a distance equal to or greater than the radius from the center of the winding shaft to the outer peripheral surface of the cleaning cloth wound around the winding shaft.

  The drum cleaning device for a printing press according to claim 4 is the drum cleaning device for a printing press according to any one of claims 1 to 3, wherein the shape of the shaft portion capable of transmitting the rotational driving force of the winding shaft is a polygon. The bearing portion has a polygonal bearing hole into which the polygonal shaft portion is fitted.

  According to the drum cleaning device for a printing press according to claim 1, the winding shaft which has finished winding the cleaning cloth using one side is removed from the cleaning cloth winding portion, and this winding shaft is attached to the bearing portion of the cleaning cloth supply portion. Since it can be attached, the unused surface of the cleaning cloth using one surface can be used with a simple operation.

  According to the drum cleaning device for a printing press according to claim 2, in addition to the effect of the drum cleaning device for the printing press according to claim 1, the bearing portions are provided in the side plate portions on both sides of the container constituting the cleaning cloth supply portion. Therefore, even if the bearing portion is provided, the container is not enlarged, and the container can be installed in the conventional installation space.

  According to the drum cleaning device of the printing press according to claim 3, in addition to the effect of the drum cleaning device of the printing press according to claim 1 or 2, the center of the bearing portion of the cleaning cloth supply portion and the outer periphery of the cleaning cloth in the container The shortest distance between the inner surfaces facing each other is equal to or greater than the radius from the center of the winding shaft to the outer peripheral surface of the cleaning cloth that has been wound around the winding shaft. The shaft can be securely attached to the bearing portion of the cleaning cloth supply unit to supply the cleaning cloth.

  According to the drum cleaning device of the printing press according to claim 4, in addition to the effect of the drum cleaning device of the printing press according to any one of claims 1 to 3, the shaft portion capable of transmitting the rotational driving force of the winding shaft. Even if the shape is polygonal, since the bearing portion has a polygonal bearing hole into which the polygonal shaft portion of the winding shaft is fitted, the winding shaft can be reliably bearing.

1 shows a drum cleaning device of a printing press according to an embodiment, wherein (a) is a cross-sectional view in which a cleaning cloth that is not used on both sides is mounted on a cleaning cloth supply unit, and (b) is a cleaning cloth that uses one side of the cleaning cloth. FIG. 5C is a cross-sectional view of a cleaning cloth supply unit mounted with a winding shaft wound up with a cleaning cloth using one side. It is sectional drawing of a washing cloth supply part same as the above. It is a top view of a washing cloth supply part same as the above. The same bearing part is shown, (a) is a front view of the bearing part on the insertion mounting side, (b) is a front view of the bearing part on the slide mounting side. (A) is a front view of the winding shaft, (b) is an end view of the shaft portion on the insertion mounting side of the winding shaft, and (c) is a shaft on the slide mounting side of the winding shaft. It is an end view of a part.

  Hereinafter, an embodiment will be described with reference to the drawings.

  In FIG. 1, reference numeral 10 denotes a drum cleaning device. The drum cleaning device 10 removes dirt such as ink and paper dust adhering to the outer peripheral surface of a drum such as a blanket cylinder or an impression cylinder of a printing press. In the drum cleaning device 10 of the present embodiment, it is assumed that the blanket cylinder 11 as a drum is cleaned.

  In the drum cleaning device 10, the blanket cylinder 11 is cleaned using the cleaning cloth 12. The cleaning cloth 12 is made of, for example, a non-woven fabric, is formed in a band shape with a predetermined length, and has a width dimension corresponding to the length dimension in the axial direction of the blanket cylinder 11. The cleaning cloth 12 is wound around a cylindrical winding tube 13 in a state where both sides are unused. The cleaning cloth 12 is impregnated with a cleaning liquid in advance.

  The drum cleaning device 10 includes a cleaning unit 16 on which a cleaning cloth 12 is mounted, and the cleaning unit 16 is supported by a frame (not shown) so as to be movable in a direction in which the cleaning unit 16 comes in contact with and separates from the blanket cylinder 11.

  The cleaning unit 16 includes a cleaning cloth supply unit 17 to which a cleaning cloth 12 wound in a cylindrical shape is attached, and a cleaning cloth 12 supplied from the cleaning cloth supply unit 17 is brought into contact with the blanket cylinder 11 for cleaning. And a cleaning cloth winding unit 20 that winds the cleaning cloth 12 that has passed through the cleaning unit 18 around the winding shaft 19.

  As shown in FIG. 5, the winding shaft 19 includes a cylindrical winding portion 23 and shaft portions 24 and 25 that protrude from both ends of the winding portion 23.

  The winding unit 23 includes a shaft body 26 having a substantially D-shaped cross-section with a part of the peripheral surface chamfered, and a cylindrical member 27 having a substantially C-shaped cross-section with a part of the peripheral surface opened. A cylindrical member 27 is attached to the outer periphery so as to be movable in the circumferential direction. Then, when the chamfered portion of the shaft main body 26 and the opening of the cylindrical member 27 are displaced, the diameter becomes large, and the cleaning cloth 12 is wound up in this large diameter state, and the chamfered portion of the shaft main body 26 The diameter of the cylindrical member 27 is generally moved so that the opening coincides with the opening of the cylindrical member 27, and the cleaning cloth 12 wound in this small diameter state is moved in the axial direction of the take-up shaft 19 to take up the take-up shaft. It can be easily removed from 19.

  Of the shaft portions 24 and 25 at both ends, one end is the shaft portion 24 on the insertion mounting side to be inserted and mounted to the bearing portion, and the other end is slid from the direction orthogonal to the axial direction with respect to the bearing portion. A shaft portion 25 on the slide mounting side to be mounted. The shaft portion 24 on the insertion mounting side is formed in a shape capable of transmitting a rotational driving force, and is formed in a quadrangular shape in the present embodiment. The shape capable of transmitting the rotational driving force may be a polygon such as a hexagon or an octagon, and the polygon also includes a substantially D-shaped cross section obtained by chamfering a part of a cylinder. . The shaft portion 25 on the slide mounting side is formed in a flat plate shape parallel to a straight line orthogonal to the axial direction passing through the center of the winding shaft 19.

  As shown in FIGS. 1 to 3, the cleaning cloth supply unit 17 includes a container 30 on which the cleaning cloth 12 wound in a cylindrical shape is mounted. The container 30 has a saucer portion 31 that is open and widened upward, and side plate portions 32 and 33 that close both ends thereof, and is formed in a saucer shape having an open upper surface. In the container 30, the outer peripheral surface of the cleaning cloth 12 wound in a cylindrical shape on the tray portion 31 is opposed, and both ends of the cleaning cloth 12 wound in a cylindrical shape on the side plate portions 32 and 33 are opposed to each other. A cleaning cloth 12 wound in a cylindrical shape is attached. In the container 30, the cleaning liquid that has exuded from the cleaning cloth 12 can be stored.

  The cleaning cloth 12 that has not been used on both sides wound around the winding tube 13 is simply placed on the inner surface of the saucer 31 and the container 30 is removed when the cleaning cloth 12 is pulled out and rewound from the winding tube 13. Is allowed to rotate freely within.

  The side plate portions 32 and 33 on both sides are internally provided with bearing portions 34 and 35 for mounting the winding shaft 19 removed from the cleaning cloth winding portion 20 after the cleaning cloth 12 has been wound up to the cleaning cloth supply portion 17. Has been. Of the bearing portions 34 and 35 on both sides, one side is a bearing portion 34 on the insertion mounting side for bearing the shaft portion 24 on the insertion mounting side of the winding shaft 19, and the other side is a slide mounting of the winding shaft 19. This is a bearing portion 35 on the slide mounting side for bearing the shaft portion 25 on the side.

  These bearing portions 34 and 35 are formed in a cylindrical shape, and are rotatably disposed in a cylindrical hole portion 36 formed on the inner surface side of the side plate portions 32 and 33. A mounting member 37 that can be rotated from the outer surface side of the side plate portions 32 and 33 is connected to the bearing portions 34 and 35, and the bearing portions 34 and 35 are rotatably mounted in a state in which the bearing portions 34 and 35 are prevented from being detached from the side plate portions 32 and 33. It has been. Therefore, the bearing portions 34 and 35 are rotatably installed in the side plate portions 32 and 33 of the container 30 so as to be embedded in the width of the side plate portions 32 and 33.

  As shown in FIG. 4A, a rectangular bearing hole 38 into which the rectangular shaft portion 24 of the winding shaft 19 is inserted and fitted is formed in the bearing portion 34 on the insertion mounting side. The hole shape of the bearing hole 38 only needs to be formed in a polygonal shape corresponding to the shape of the shaft portion 24 described above.

  As shown in FIG. 4B, the bearing portion 35 on the slide mounting side is formed with a bearing groove 39 into which the flat shaft portion 25 of the winding shaft 19 is inserted from the radial direction perpendicular to the axial direction. ing. In addition, a detachable groove 40 is formed on the upper surface of the side plate portion 33 so as to communicate with the hole portion 36 and allow the flat shaft portion 25 of the winding shaft 19 to pass therethrough.

  Then, the bearing portions 34 and 35 are configured so that the shaft portions 24 and 25 at both ends of the winding shaft 19 removed from the cleaning cloth take-up portion 20 after the cleaning cloth 12 has been wound up can be attached and detached. The take-up shaft 19 is rotatably supported. In addition, the shortest distance between the center of the bearing portions 34 and 35 and the inner surface of the tray portion 31 where the outer peripheral surface of the cleaning cloth 12 in the container 30 faces is wound around the winding shaft 19 from the center of the winding shaft 19. The distance to the outer peripheral surface of the cleaning cloth 12 is greater than the radius.

  As shown in FIG. 1, the cleaning unit 18 includes a pressure-bonding pad 43 that presses the cleaning cloth 12 against the blanket cylinder 11 and a support portion 44 that supports the pressure-bonding pad 43.

  Further, the cleaning cloth winding unit 20 includes a winding shaft 19 that winds the cleaning cloth 12 that has passed through the cleaning unit 18, a bearing unit (not shown) that supports the winding shaft 19, and a winding shaft that is supported by the bearing unit. A drive mechanism (not shown) for rotating 19 in the winding direction is provided.

  The bearing section is formed in the same configuration as the insertion mounting side bearing section 34 and slide mounting side bearing section 35 described in the cleaning cloth supply section 17, and the shaft sections 24 and 25 at both ends of the take-up shaft 19 can be attached and detached. It is said.

  The drive mechanism uses, for example, an air cylinder, converts the linear motion of the air cylinder into rotational motion, and this rotational motion is inserted into the shaft portion on the insertion mounting side of the take-up shaft 19 via the bearing portion on the insertion mounting side. 24 is configured to rotate the winding shaft 19 in the winding direction.

  Next, the operation of the drum cleaning device 10 will be described.

  As shown in FIG. 1 (a), in the preparation of the drum cleaning device 10, the unused double-sided cleaning cloth 12 wound around the winding tube 13 is dropped into the container 30 of the cleaning cloth supply section 17, and placed. The tip of the cleaning cloth 12 drawn out from the winding tube 13 is wound around the winding shaft 19 attached to the cleaning cloth winding section 20 through the cleaning section 18 and attached. The cleaning cloth 12 is impregnated with a cleaning liquid in advance.

  During the cleaning process by the drum cleaning device 10, the cleaning unit 16 is moved closer to the blanket cylinder 11, and one side of the cleaning cloth 12 is pressed and brought into contact with the blanket cylinder 11 by the cleaning unit 18. At this time, the blanket cylinder 11 is rotating, and the blanket cylinder 11 is cleaned by removing dirt on the blanket cylinder 11 on one side by the relative movement of the blanket cylinder 11 and the cleaning cloth 12.

  Further, the cleaning cloth take-up unit 20 winds the cleaning cloth 12 around the take-up shaft 19, discharges the used part on one side of the cleaning cloth 12 from the cleaning part 18, and supplies the unused part to the cleaning part 18 to supply the blanket cylinder. Wash 11 securely.

  Then, as shown in FIG. 1B, as the cleaning process by the drum cleaning device 10 progresses, if the cleaning cloth 12 attached to the cleaning cloth supply unit 17 is used on one side, the cleaning unit 16 is replaced with the blanket cylinder 11. The cleaning cloth 12 is completely wound around the winding shaft 19, the winding shaft 19 that has finished winding the cleaning cloth 12 is removed from the cleaning cloth winding section 20, and the winding tube 13 is removed from the cleaning cloth supply section. Remove from 17 containers 30.

  As shown in FIG. 1 (c), the winding shaft 19 removed from the cleaning cloth take-up section 20 after winding the cleaning cloth 12 that has not been used on one side (used on one side) is wound around the cleaning cloth 12. It is mounted on the container 30 of the cleaning cloth supply unit 17 as it is. That is, first, the shaft portion 24 on the insertion mounting side of the winding shaft 19 is inserted into the bearing hole 38 of the bearing portion 34 on the insertion mounting side provided in the side plate portion 32 on one side of the container 30, and then the winding is performed. A direction in which the shaft portion 25 on the slide mounting side of the take-off shaft 19 is orthogonal to the bearing groove 39 of the bearing portion 35 on the slide mounting side through the attaching / detaching groove 40 provided on the side plate portion 33 on the other side of the container 30 Insert from.

  The cleaning cloth winding unit 20 is provided with another winding shaft 19 around which the cleaning cloth 12 is not wound. At this time, the take-up shaft 19 is attached to the bearing portion of the cleaning cloth take-up portion 20 in the same manner as the attachment to the bearing portions 34 and 35 of the cleaning cloth supply portion 17.

  The tip of the unused cleaning cloth 12 pulled out from the take-up shaft 19 attached to the cleaning cloth supply unit 17 is oriented so that the unused surface of the cleaning cloth 12 faces the blanket cylinder 11, and the cleaning cloth is wound through the cleaning section 18. It is wound around the take-up shaft 19 of the take-up section 20 and attached.

  If the cleaning liquid impregnated on the cleaning cloth 12 used on one side is insufficient, the cleaning cloth 12 attached to the cleaning cloth supply unit 17 may be replenished with the cleaning liquid. At this time, even when the cleaning cloth 12 drips down, the cleaning liquid can be received in the container 30 and can be prevented from dripping down to the printing press.

  Thereafter, the blanket cylinder 11 is cleaned using the unused surface of the cleaning cloth 12 by the cleaning process by the drum cleaning device 10 as described above.

  Then, as the cleaning process by the drum cleaning device 10 progresses, if the unused surface of the cleaning cloth 12 attached to the cleaning cloth supply unit 17 is used, that is, if both surfaces of the cleaning cloth 12 are used, the cleaning unit 16 Is moved away from the blanket cylinder 11, the cleaning cloth 12 is completely wound around the winding shaft 19, the winding shaft 19 that has finished winding the cleaning cloth 12 is removed from the cleaning cloth winding section 20, and the cleaning cloth supply section Remove the winding shaft 19 from 17.

  In order to remove the take-up shaft 19 from the cleaning cloth supply unit 17, first, the orientation of the shaft portion 25 on the slide mounting side of the take-up shaft 19 is changed to the attachment / detachment groove 40 provided on the side plate portion 33 on the other side of the container 30. Then, the shaft portion 25 is pulled out upward through the attachment / detachment groove 40, which is a direction perpendicular to the axial direction, and then the shaft portion 24 on the insertion mounting side of the winding shaft 19 is connected to the side plate portion 32 on one side of the container 30. It is removed from the bearing hole 38 of the provided bearing portion 34 on the insertion mounting side. It is also the same that the take-up shaft 19 is removed from the cleaning cloth take-up unit 20.

  The double-sided used cleaning cloth 12 is removed from the take-up shaft 19 and subjected to predetermined processing.

  After that, as described above, the unused double-sided cleaning cloth 12 wound around the winding tube 13 is attached to the cleaning cloth supply section 17, and the winding shaft 19 on which the cleaning cloth 12 is not wound is attached to the cleaning cloth winding section. Attach to 20 and perform cleaning.

  As described above, according to the drum cleaning device 10, the winding shaft 19 that has finished winding the cleaning cloth 12 using one side is removed from the cleaning cloth winding section 20, and the winding shaft 19 is removed from the cleaning cloth supply section 17. Since it can be attached to the bearing portions 34 and 35, an unused surface of the cleaning cloth 12 using one surface can be used with a simple operation.

  Further, since the bearing portions 34 and 35 are provided in the side plate portions 32 and 33 on both sides of the container 30 constituting the cleaning cloth supply portion 17, there is no increase in size even if the bearing portions 34 and 35 are provided. The container 30 can be installed in the installation space.

  In addition, the shortest distance between the center of the bearings 34 and 35 of the cleaning cloth supply unit 17 and the inner surface of the container 30 facing the outer peripheral surface of the cleaning cloth 12 is wound around the winding shaft 19 from the center of the winding shaft 19. Since the distance to the outer peripheral surface of the unused cleaning cloth 12 on one side that has been removed is greater than the radius, the take-up shaft 19 around which the cleaning cloth 12 has been wound is securely attached to the bearing sections 34 and 35 of the cleaning cloth supply section 17. Then, the cleaning cloth 12 can be supplied.

  Further, even if the shape of the shaft portion 24 capable of transmitting the rotational driving force of the winding shaft 19 is polygonal, the polygonal bearing into which the polygonal shaft portion 24 of the winding shaft 19 is fitted is the bearing portion 34. Since the hole 38 is provided, the winding shaft 19 can be reliably bearing.

10 Drum cleaning device
11 Blanket drum as a drum
12 Wash cloth
17 Cleaning cloth supply unit
18 Cleaning section
19 Winding shaft
20 Cleaning cloth take-up part
24, 25 Shaft
30 containers
32, 33 Side plate
34, 35 Bearing
38 Bearing hole

Claims (4)

A cleaning cloth supply unit to which a cleaning cloth wound in a cylindrical shape is attached;
A cleaning section for bringing the cleaning cloth supplied from the cleaning cloth supply section into contact with the drum of the printing press;
A shaft portion is provided at both ends in the axial direction, and at least one shaft portion is provided in a shape capable of transmitting a rotational driving force. A cleaning cloth take-up unit that transmits a rotational driving force to the shaft to rotate the take-up shaft, and winds the cleaning cloth that has passed through the cleaning unit onto the take-up shaft;
Shafts provided at the cleaning cloth supply unit, the shafts at both ends of the take-up shaft removed from the cleaning cloth winding unit after the cleaning cloth has been wound up are detachable, and the winding shaft is attached to the cleaning cloth supply unit. A drum cleaning device for a printing press, comprising: a bearing portion that rotatably supports the drum. The cleaning cloth supply unit is formed such that the cleaning cloth wound in the cylindrical shape is opened upward so that the cleaning cloth can be mounted, and both side ends of the cleaning cloth wound in the cylindrical shape are opposed to both ends. The drum cleaning device for a printing press according to claim 1, wherein the bearing portion is provided in both side plate portions of the container. The shortest distance between the center of the bearing portion of the cleaning cloth supply unit and the inner surface of the container facing the outer peripheral surface of the cleaning cloth is the cleaning cloth wound around the winding shaft from the center of the winding shaft. The drum cleaning device for a printing press according to claim 1, wherein the distance is equal to or greater than a radius to the outer peripheral surface of the printing press. The shape of the shaft part capable of transmitting the rotational driving force of the winding shaft is a polygon,
The drum cleaning device for a printing press according to any one of claims 1 to 3, wherein the bearing portion has a polygonal bearing hole into which the polygonal shaft portion is fitted.

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