JP2013017977A - Dust removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust removing device efficiently performing cleaning work of an adhesive body.SOLUTION: The dust removing device 200 includes: a rubber drum 203 in contact with a paper sheet 1 and removing dust from the paper sheet 1; and an adhesive roller 210 rotatably supported so as to abut on the rubber drum 203 and having adhesiveness on the surface thereof. The device 200 is provided with: an air cylinder 213 and the like moving the adhesive roller 210 in the direction in contact with/getting away from the rubber drum 203; a drive motor 228 and the like drivingly rotating the adhesive roller 210; a cleaning belt 242 and the like abutting on the surface of the adhesive roller 210 when the adhesive roller 210 gets away from the rubber drum 203; and a one-way clutch 231 drivingly rotating the adhesive roller 210 by the drive force of the drive motor 228 when the adhesive roller 210 gets away from the rubber drum 203 and entraining the adhesive roller 210 accompanying rotation of the rubber drum 203 when the adhesive roller 210 is in contact with the rubber drum 203.

Description

  The present invention relates to a dust removing device that removes dust from a sheet or web, and in particular, a sheet paper fed to a printing unit of a printing machine, paper dust adhering to a web, powder for preventing set-off, and the like. It is effective when applied when removing dust.

  As a dust removing device for removing dust such as paper dust attached to a sheet fed to a printing unit of a printing press or powder for preventing set-off, it is described in, for example, Patent Document 1 below. Thus, by supplying only dampening water to the blanket surface of the rubber cylinder of the printing unit located on the most upstream side in the sheet distribution direction of the printing press, the dust is attached to the blanket surface of the rubber cylinder. It is known that an adhesive roller is used to transfer to an adhesive surface for removal.

Japanese Utility Model Publication No. 07-037871

  However, in the dust removing device described in Patent Document 1 or the like, when a large amount of dust is transferred to the surface of the adhesive roller and the adhesiveness of the surface of the adhesive roller is reduced, the adhesive roller is removed from the outside of the device. It was necessary to recover the adhesiveness of the surface of the dust removing roller by removing the adhesive roller and cleaning the surface of the dusting roller, so that the cleaning operation of the adhesive roller was very troublesome. .

  Such a problem is not limited to a sheet-fed printing machine that prints on a sheet of paper, but also a web printing machine that prints on a web, and rotation that removes dust from the sheet or web by contacting the sheet or web. If it is a dust removal device provided with a body and an adhesive body that is rotatably supported so as to come into contact with the rotating body and has adhesiveness on the surface, it can be produced in the same manner as described above.

  In view of the above, an object of the present invention is to provide a dust removal device that can efficiently perform the cleaning operation of the adhesive body.

  In order to solve the above-described problems, a dust removing device according to the present invention is configured to rotate on a rotating body that comes into contact with the sheet or the web and removes the dust from the sheet or the web, and to come into contact with the rotating body. In the dust removing apparatus provided with an adhesive body that is supported and has adhesiveness on the surface, an adhesive body moving means for moving the adhesive body in a contact and separation direction with respect to the rotating body, and connected to the adhesive body An adhesive body driving means for driving and rotating the adhesive body, and an adhesive body cleaning means for cleaning the surface of the adhesive body by contacting the surface of the adhesive body when the adhesive body is separated from the rotating body. The adhesive body is disposed between the adhesive body and the adhesive body driving means, and the adhesive body is driven to rotate by the driving force of the adhesive body driving means when the adhesive body is separated from the rotating body. While the adhesive body Characterized in that with the rotation of the rotary member and a power switching means for co-rotated the adhesive member when in contact pairs with respect to serial rotator.

  The dust removal device according to the present invention is characterized in that, in the above-described dust removal device, the power switching means is a one-way clutch.

  In the dust removal apparatus according to the present invention, when the adhesive body is driven and rotated by the adhesive body driving means, and the adhesive body is moved so as to contact the rotating body by the adhesive body moving means, the power switching means is As the rotating body rotates with the rotation of the rotating body, the adhesive body is always rotated at the same speed as the rotating body to ensure effective transfer and collection of dust from the rotating body by the adhesive body. In addition, when the adhesive body is moved away from the rotating body by the adhesive body moving means, and the adhesive body cleaning means is brought into contact with the surface of the adhesive body, the power switching means causes the adhesive body to move the adhesive body to the adhesive body driving means. Therefore, the surface of the adhesive body can be thoroughly cleaned with the adhesive body cleaning means, and the cleaning operation of the adhesive body can be performed efficiently.

1 is an overall schematic configuration diagram of a main embodiment of a sheet-fed printing press to which a dust removal device according to the present invention is applied. It is an extraction enlarged view of the principal part of the dust removal apparatus of FIG. FIG. 3 is a developed cross-sectional view of a main part of FIG.

  Embodiments of a dust removal device according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments described with reference to the drawings.

[Main embodiments]
A main embodiment when the dust removing apparatus according to the present invention is applied to a sheet-fed printing press will be described with reference to FIGS.

  As shown in FIG. 1, the paper feed device 100 is in communication with the base end side of a feeder board 102 that feeds the sheets 1 that are sheets stacked on the paper feed tray 101 one by one. A swing device 103 is provided on the front end side of the feeder board 102 to deliver the sheets 1 on the feeder board 102 to the transfer cylinder 201 one by one.

  The pressure drum 202 of the dust removing device 200 is in contact with the transfer drum 201. A rubber cylinder 203 which is a rotating body is in contact with the impression cylinder 202. A transfer drum 301 is in contact with the pressure drum 202 on the downstream side in the rotation direction of the pressure drum 202 with respect to the contact position of the pressure drum 202 with the rubber drum 203. The transfer drum 301 is in contact with the pressure drum 302 of the first printing unit 300. A rubber cylinder 303 is in contact with the impression cylinder 302. A plate cylinder 304 is in contact with the rubber cylinder 303. In the vicinity of the plate cylinder 304, there are a first ink supply device (not shown) for supplying the first ink to the plate cylinder 304 and a water supply device (not shown) for supplying dampening water to the plate cylinder 304. Each is arranged.

  A transfer drum 401 is in contact with the pressure drum 302 on the downstream side in the rotation direction of the pressure drum 302 with respect to the contact position of the pressure drum 302 with the rubber drum 303. The transfer drum 401 is in contact with the pressure drum 402 of the second printing unit 400. A rubber cylinder 403 is in contact with the impression cylinder 402. A plate cylinder 404 is in contact with the rubber cylinder 403. In the vicinity of the plate cylinder 404, there is a second ink supply device (not shown) for supplying the second ink to the plate cylinder 404 and a water supply device (not shown) for supplying dampening water to the plate cylinder 404. Each is arranged.

  A transfer drum 501 is in contact with the pressure drum 402 on the downstream side in the rotation direction of the pressure drum 402 with respect to the contact position of the pressure drum 402 with the rubber drum 403. The transfer drum 501 is in contact with the impression drum 502 of the third printing unit 500. A rubber cylinder 503 is in contact with the impression cylinder 502. A plate cylinder 504 is in contact with the rubber cylinder 503. In the vicinity of the plate cylinder 504, there is a third ink supply device (not shown) for supplying the third ink to the plate cylinder 504 and a water supply device (not shown) for supplying dampening water to the plate cylinder 504. Each is arranged.

  A transfer drum 601 is in contact with the pressure drum 502 on the downstream side in the rotation direction of the pressure drum 502 with respect to the contact position of the pressure drum 502 with the rubber drum 503. The transfer drum 601 is in contact with the impression drum 602 of the fourth printing unit 600. A rubber cylinder 603 is in contact with the impression cylinder 602. A plate cylinder 604 is in contact with the rubber cylinder 603. In the vicinity of the plate cylinder 604, a fourth ink supply device (not shown) for supplying the fourth ink to the plate cylinder 604 and a water supply device (not shown) for supplying dampening water to the plate cylinder 604 are provided. Each is arranged.

  A discharge drum 701 of the discharge device 700 is in contact with the pressure drum 602 on the downstream side in the rotation direction of the pressure drum 602 with respect to the contact position of the pressure drum 602 with the rubber drum 603. A sprocket (not shown) is coaxially provided on the discharge cylinder 701. An endless paper discharge chain 704 is attached to the sprocket. A plurality of grippers (not shown) having grippers are attached at predetermined intervals. The paper discharge chain 704 is stretched over the sprocket 703. A plurality of paper discharge trays 705 are disposed below the paper discharge chain 704.

  As shown in FIG. 2, an adhesive roller 210, which is an adhesive body having adhesiveness, is in contact with the rubber cylinder 203 of the dust removing device 200. As shown in FIGS. 2 and 3, the adhesive roller 210 is rotatably supported by an eccentric bearing 212 via a bearing 211. The eccentric bearing 212 is supported so as to be rotatable with respect to the frame 10 of the printing press. An arm 212 a is projected from the eccentric bearing 212. The distal end side of the air cylinder 213 is connected to the distal end side of the arm 212a of the eccentric bearing 212 via a pin 213a. The base end side of the air cylinder 213 is supported so as to be rotatable with respect to the frame 10.

  That is, the air cylinder 213 is expanded and contracted, and the eccentric bearing 212 is rotated via the arm 212 a, so that the outer peripheral surface of the adhesive roller 210 is in contact with and away from the outer peripheral surface of the rubber cylinder 203. It can be moved to.

  In the vicinity of the arm 212 a of the eccentric bearing 212, a rotation shaft 214 that is rotatably supported with respect to the frame 10 is disposed. A disc-shaped cam 215 is eccentrically attached to the rotating shaft 214. A cam follower 216 that is in contact with the cam surface (outer peripheral surface) of the cam 215 is rotatably supported in the middle of the eccentric bearing 212 in the longitudinal direction of the arm 212a.

  In the vicinity of the rotation shaft 214 of the frame 10, a through hole 217a that penetrates in the radial direction is rotatably attached so that the proximal end side of the support pin 217 formed on the distal end side protrudes the distal end side. It has been. A cylindrical screw cylinder 218 having a screw hole 218a formed inside is inserted into the through hole 217a of the support pin 217 so as to be rotatable in the circumferential direction.

  A gripper 219 for rotating the screw cylinder 218 in the circumferential direction is attached to the proximal end side of the screw cylinder 218. A stopper 218 b that restricts the axial movement of the screw cylinder 218 relative to the through hole 217 a of the support pin 217 is attached to the distal end side of the screw cylinder 218. In the screw hole 218a of the screw shaft 218, the base end side of the screw shaft 220 having a screw portion formed on the base end side is screwed. A connecting block 221 is attached to the tip of the screw shaft 220.

  One end of an arm 222 is connected to the rotation shaft 214. The connecting block 221 is connected to the other end side of the arm 222 via a pin 223 so that the connecting block 221 can rotate about the same axis as the rotating shaft 214 and the support pin 217.

  That is, if the gripper 219 is gripped and the screw cylinder 218 is rotated while the adhesive roller 210 is brought into contact with the outer peripheral surface of the rubber cylinder 203 by the operation of the air cylinder 213, the screw cylinder 218 is rotated. The screw shaft 220 moves in the axial direction along the screw hole 218 a of 218, and the other end side of the arm 222 swings through the connection block 221 and the pin 223. And the cam 215 is rotated. As the cam 215 is rotated, the cam follower 216 is moved to rotate the eccentric bearing 212 via the arm 212a. The pressing force of the adhesive roller 210 against 203 can be adjusted.

  A pad 241 is disposed in the vicinity of the outer peripheral surface of the adhesive roller 210 so as to face the outer peripheral surface of the adhesive roller 210, and the pad 241 contacts the outer peripheral surface of the adhesive roller 210. It can move in the direction of contact and separation. In the vicinity of the pad 241, a feeding roller 243 wound with a cleaning band 242 impregnated with a cleaning liquid and a winding roller 244 for collecting the cleaning band 242 fed out from the feeding roller 243 are disposed. The cleaning band 242 passes through the surface of the pad 241 facing the adhesive roller 210.

  As shown in FIG. 3, a support frame 224 is erected in the vicinity of the eccentric bearing 212 of the frame 10. One end of a rotating shaft 225 that is axially oriented along the axial center direction of the adhesive roller 210 is rotatably supported by the support frame 224 via a bearing 224a. The other end of the rotary shaft 225 is rotatably supported by a support base 226 fixed to the frame 10 via a bearing 226a.

  A support frame 227 is erected in the vicinity of the support base 226 of the frame 10. The support frame 227 supports a drive motor 228 that is oriented so that the drive shaft 228a faces the frame 10 side. A gear 229 is coaxially attached to the drive shaft 228 a of the drive motor 228. The gear 229 meshes with a gear 230 attached coaxially to the other end of the rotating shaft 225.

  In the middle of the rotating shaft 225 in the axial direction, the inner peripheral surface side of the cylindrical one-way clutch 231 is fitted coaxially. A gear 232 is coaxially attached to the outer peripheral surface of the one-way clutch 231. A gear 233 attached coaxially to the shaft end of the adhesive roller 210 is engaged with the gear.

  That is, when the rubber cylinder 203 is rotated by the operation of the machine motor, which is the machine drive means, and the drive motor 228 is operating, the air cylinder 213 is operated to start from the outer peripheral surface of the rubber cylinder 203. When the adhesive roller 210 is separated, the rotational force (driving force) of the drive shaft 228a of the drive motor 228 is transferred from the gears 229 and 230 and the rotary shaft 225 to the gears 232 and 233 via the one-way clutch 231. When the adhesive roller 210 is rotated (low speed) and the air cylinder 213 is operated to bring the adhesive roller 210 into contact with the outer peripheral surface of the rubber cylinder 203, the rotational force ( High speed) is greater than the rotational force (drive force) of the drive shaft 228a of the drive motor 228, in other words, the rubber Since the peripheral speed of 203 is faster than the peripheral speed of the adhesive roller 210, the outer peripheral side of the one-way clutch 231 is idle with respect to the inner peripheral side, and the adhesive roller 210 is accompanied by the rotation of the rubber cylinder 203. It turns around (high speed).

  In the present embodiment, the bearing 211, the eccentric bearing 212, the air cylinder 213, and the like constitute an adhesive body moving means, and the rotating shaft 214, the cam 215, the cam follower 216, and the support pin 217. The screw cylinder 218, the gripper 219, the screw shaft 220, the connecting block 221, the arm 222, the pin 223, etc. constitute an adhesive body position adjusting means, and the rotating shaft 225, the drive motor 228, the The gears 229, 230, 232, 233 and the like constitute an adhesive body driving means, and the one-way clutch 231 and the like constitute a power switching means, and the pad 241, the cleaning band 242, the feeding roller 243, the winding The roller 244 and the like constitute an adhesive body cleaning means.

  Next, the operation of the sheet-fed printing press according to this embodiment provided with the dust removing device 200 as described above will be described.

  The machine motor and the drive motor 228 are operated, and the air cylinder 213 is contracted so that the adhesive roller 210 of the dust removing device 200 comes into contact with the rubber cylinder 203, and then the paper feeding device 100. When the sheets 1 on the sheet feeding table 101 are fed one by one onto the feeder board 102 and delivered one by one to the transfer cylinder 201 by the swing device 103, the sheet 1 is transferred to the transfer cylinder 201 is transferred from the pressure drum 202 to the pressure drum 202 of the dust removing device 200, and passes through a contact position between the pressure drum 202 and the rubber drum 203, so that dust such as paper dust and powder for preventing set-off can be collected. After being attached to and removed from the rubber cylinder 203, the first ink supplied to the impression cylinder 302 of the first printing unit 300 through the transfer cylinder 301 and supplied to the plate cylinder 304 passes through the rubber cylinder 303. Is transferred is printed.

  Subsequently, the sheet 1 is transferred to the impression cylinder 402 of the second printing unit 400 via the transfer cylinder 401, and the second ink supplied to the plate cylinder 404 is transferred via the rubber cylinder 403. The third ink transferred to the impression cylinder 502 of the third printing unit 500 via the transfer cylinder 501 and transferred to the plate cylinder 504 is transferred via the rubber cylinder 503 for printing. After the fourth ink transferred to the impression cylinder 602 of the fourth printing unit 600 via the 601 and supplied to the plate cylinder 604 is transferred via the rubber cylinder 603 and printed, the discharge of the paper discharge device 700 is performed. The paper is transferred to the paper cylinder 701, is transferred by the gripper of the paper discharge chain, is transported, and is discharged onto a paper discharge tray 705.

  On the other hand, as described above, the dust removing device 200 that has removed the dust from the sheet 1 is rotated by the adhesive roller 210 as the rubber cylinder 203 is rotated by the operation of the motor of the machine. By (high speed), the dust adhering to the rubber cylinder 203 is transferred to the outer peripheral surface of the adhesive roller 210. As a result, the rubber cylinder 203 re-attaches and removes the dust adhering to the sheet 1 to be recycled and newly fed.

  When printing is performed while removing the dust adhering to the sheet 1 as described above, and the transfer and recovery ability of the dust from the rubber cylinder 203 by the adhesive roller 210 is reduced, the adhesive roller 210 is moved to the rubber. The air cylinder 213 is extended so as to be separated from the body 203.

  As a result, as described above, the rotational force (driving force) of the drive shaft 228 a of the drive motor 228 is transmitted from the gears 229 and 230 and the rotary shaft 225 via the one-way clutch 231 to the gears 232 and 233. The adhesive roller 210 is rotated (low speed).

  Then, by moving the pad 241 and the like so that the cleaning band 242 on the pad 241 is brought into contact with the adhesive roller 210, the dust transferred and collected to the adhesive roller 210 is allowed to pass through the cleaning band 242 for a predetermined time. After washing and removing to restore the adhesive performance of the adhesive roller 210, the pad 241 and the like are moved so that the cleaning band 242 on the pad 241 is separated from the adhesive roller 210, and the adhesive roller 210 is moved. The air cylinder 213 is shortened so that the rubber cylinder 203 comes into contact again.

  As a result, the adhesive roller 210 returns to the initial state, and as described above, the adhesive roller 210 rotates along with the rotation of the rubber cylinder 203 by the machine motor (high speed), and the sheet 1 Thus, the dust removed from the rubber cylinder 203 can be transferred and recovered again to the outer peripheral surface to regenerate the rubber cylinder 203.

  That is, the adhesive roller 210 is connected to the drive motor 228 via the one-way clutch 331, so that it is rotated (low speed) by the drive force of the drive motor 228 when separated from the rubber cylinder 203. On the other hand, when it comes into contact with the rubber cylinder 203, it can be rotated (high speed) with the rotation of the rubber cylinder 203 by the rotational force of the rubber cylinder 203 by the operation of the motor of this machine.

  For this reason, the adhesive roller 210 is rotationally driven at a speed (low speed) suitable for cleaning when the transferred and collected dust is cleaned by the cleaning band 241, and the dust that has adhered to and removed from the rubber cylinder 203. When transfer is recovered, it is possible to rotate at an appropriate speed (high speed) for transfer recovery from the rubber cylinder 203, that is, to always rotate at the same speed as the rubber cylinder 203 regardless of the outer diameter size.

  Therefore, according to the present embodiment, it is possible to efficiently perform the cleaning operation of the adhesive roller 210 while ensuring effective transfer and collection of the dust from the rubber cylinder 203 by the adhesive roller 210.

  Further, when the adhesive roller 210 contacts the rubber drum 203 rotating at a high speed, the drive motor 228 rotates the adhesive roller 210 via the one-way clutch 331. It is possible to reduce a load (impact) applied to both sides when contacting the rubber cylinder 203, and to suppress deterioration of the adhesive roller 210 and the rubber cylinder 203.

[Other Embodiments]
In the above-described embodiment, the case where the adhesive roller 210 is applied as the adhesive body has been described. However, as another embodiment, for example, an adhesive cylinder that is rotatably supported and has adhesiveness on the surface is applied. Is also possible.

  In the above-described embodiment, the case where the present invention is applied to a sheet-fed printing machine that performs printing on the sheet 1 has been described. However, the present invention is not limited thereto, and is applied to, for example, a web printing machine that performs printing on a web. Of course, a rotating body that contacts the sheet or web to remove dust from the sheet or web, and an adhesive that is rotatably supported so as to come into contact with the rotating body and has a sticky surface. If it is a dust removal apparatus provided with a body, the same effect as the case of embodiment mentioned above can be acquired.

  Since the dust removing apparatus according to the present invention can efficiently perform the cleaning operation of the adhesive body, it can be used extremely beneficially in various industries including the printing industry.

1 sheet 10 frame 100 paper feeder 101 paper feeder 102 feeder board 103 swing device 200 dust removal device 201 transfer drum 202 pressure drum 203 rubber drum 210 adhesive roller 211 bearing 212 eccentric bearing 212a arm 213 air cylinder 213a pin 214 times Driving shaft 215 Cam 216 Cam follower 217 Support pin 217a Through hole 218 Screw cylinder 218a Screw hole 218b Retaining stop 219 Gripper 220 Screw shaft 221 Connection block 222 Arm 223 Pin 224 Support frame 225 Rotating shaft 226 Support base 227 Support frame 228 Drive motor 228a Drive Shaft 229, 230 Gear 231 One-way clutch 232, 233 Gear 241 Pad 242 Cleaning zone 243 Feeding roller 244 Winding roller 3 0 first printing unit 301 transfer cylinder 302 impression cylinder 303 rubber cylinder 304 printing cylinder 400 second printing unit 401 transfer cylinder 402 impression cylinder 403 rubber cylinder 404 printing cylinder 500 third printing unit 501 transfer cylinder 502 impression cylinder 503 rubber cylinder 504 printing plate Cylinder 600 Fourth printing unit 601 Transfer cylinder 602 Pressure cylinder 603 Rubber cylinder 604 Plate cylinder 700 Discharge device 701 Discharge cylinder 703 Sprocket 704 Discharge chain 705 Discharge stand

Claims (2)

A rotating body that contacts the sheet or web to remove dust from the sheet or web;
In a dust removal apparatus comprising: an adhesive body that is rotatably supported so as to be in contact with the rotating body and has adhesiveness on a surface thereof;
An adhesive body moving means for moving the adhesive body toward and away from the rotating body;
An adhesive body driving means connected to the adhesive body to drive and rotate the adhesive body;
An adhesive body cleaning means for cleaning the surface of the adhesive body in contact with the surface of the adhesive body when the adhesive body is separated from the rotating body;
The adhesive body is disposed between the adhesive body and the adhesive body driving means, and drives and rotates the adhesive body with the driving force of the adhesive body driving means when the adhesive body is separated from the rotating body. On the other hand, a dust removal device comprising: a power switching unit that rotates the adhesive body with the rotation of the rotating body when the adhesive body is in contact with the rotating body. The dust removal device according to claim 1,
The dust removing device, wherein the power switching means is a one-way clutch.

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