JP2678744B2 - Cylinder cleaning device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder and roller cleaning device for a printing machine, and more particularly to a cylinder and a roller for cleaning a cylinder by pressing a cleaning cloth against a blanket outer peripheral surface of the offset printing machine with a pressure pad. The present invention relates to a cylinder and roller cleaning device having a cleaning cloth reverse feeding function for cleaning a part of the cleaning cloth used at that time and returning it to the cleaning cloth supply side for reuse in the next cleaning. For example, when a blanket cylinder of an offset printing machine continues printing for a certain period of time, ink remains on the surface of the blanket and accumulates and stains, which causes deterioration of print quality. Various types of cylinder cleaning devices have been developed to remove the dirt on the blanket cylinder. An example of this type of cylinder cleaning device will be described. A pair of side plates are attached to the frames on both sides of the printer body, and a pair of cleaning cloth supply rolls and cleaning cloth take-up roll shafts are rotatably supported on the side plates in parallel with the axis of the blanket cylinder. ing. Both ends of a belt-shaped cleaning cloth are wound around the cleaning cloth supply roll and the cleaning cloth winding roll shaft, and a predetermined tension is applied thereto. The cleaning cloth take-up roll shaft is rotationally driven intermittently (for example, once every 3 seconds) at a predetermined speed by a driving device. A cleaning cloth pressing means for pressing the back surface of the cleaning cloth to press it against the surface of the blanket cylinder is arranged between the cleaning cloth supply roll and the cleaning cloth winding roll shaft. The cleaning cloth pressing means includes a pressure pad made of an elastic material such as resin or rubber, which is held by a pad stay, for example. An air chamber formed by the tip portion of the pad stay and the pressure pad is connected to a compressor provided outside. When air is supplied to the air chamber, the pressure pad expands and presses the cleaning cloth slidingly moving on the outer surface of the pressure pad against the blanket cylinder. In this state, the cleaning cloth wipes and cleans the surface of the blanket cylinder. In the case of a standard sheet-fed offset printing press, as an example, the amount of cleaning cloth consumed during one cycle of cleaning operation is roughly one cleaning cloth every three revolutions of the blanket cylinder when driven intermittently. It is sent intermittently, and the amount of one feed is about 5 mm. Here, since the step moves 20 times during one cycle of cleaning operation, the amount of cleaning cloth consumed in one cycle of cleaning is about 100 mm. Although detailed description of numerical values is omitted, in the case of a newspaper offset printing machine, the consumption amount of the cleaning cloth is about 450 mm per cycle. Among the cleaning cloths used in the cleaning operation, the cloth contacted with the cylinder at the initial stage of the cleaning operation wipes off a large amount of dirt and is saturated with dirt. ing. Among the used cleaning cloths, there is less soiling toward the end of the cleaning operation, and in the middle and later parts of the cleaning cloth, there is still sufficient ability to wipe off the soiling. However, conventionally, the used cleaning cloth is not reused, and the cleaning is always performed by a new cleaning cloth supplied from the cleaning cloth supply roll. It is also considered to manually rewind and reuse the used cleaning cloth, but there are variations in the rewinding amount, and the rewinding operation for each cleaning operation is troublesome, which reduces cleaning efficiency. It was Since the cleaning cloth used is required to have high quality such as tensile strength, dimensional accuracy, and wettability, extremely expensive materials such as non-woven fabric are used, resulting in an increase in running cost. An object of the present invention is to provide a cylinder cleaning device having a function of partially feeding back a cleaning cloth that has been used once and then reusing the part to save consumption. In order to achieve the above object, the cylinder cleaning device according to the invention of claim 1 has a cleaning cloth supply means for supplying cleaning cloth from a cleaning cloth supply roll and a side plate. A cleaning cloth winding roll shaft rotatably supported, and a cloth winding device for winding a cleaning cloth suspended between the cleaning cloth supply means and the cleaning cloth winding roll shaft by rotating the cleaning cloth winding roll shaft. A pressing means for pressing or releasing the cleaning cloth against the outer peripheral surface of the cylinder, and a swing roller arranged between the pressing means and the cleaning cloth winding roll shaft and swingably provided in a direction of feeding the cleaning cloth from the cleaning cloth supply roll. And a cleaning cloth feeding means for feeding the cloth of an arbitrarily set length by the swing roller, and when the cleaning is completed, the swing roller is returned to the original position to wash a part of the cloth feeding. The cleaning cloth rewinding means for feeding back to the cleaning cloth supply means side is provided. A cylinder cleaning device according to a second aspect of the present invention has a cleaning cloth supply means for supplying a cleaning cloth from a cleaning cloth supply roll, and a cleaning cloth take-up roll shaft rotatably supported by the side plate. A cloth winding means for winding the cleaning cloth suspended between the cloth supply means and the cleaning cloth winding roll shaft by rotating the cleaning cloth winding roll shaft; and a pressing means for pressing or releasing the cleaning cloth on the cylinder outer peripheral surface, Each of the two rods or rollers has a bar or a roller arranged in parallel between the cleaning cloth supply means and the pressing means and between the pressing means and the cleaning cloth take-up roll shaft in the feeding direction of the cleaning cloth. Is provided with cloth feeding means for reciprocating the cloth in the feeding direction and in the returning and unwinding direction. A cylinder cleaning device according to a third aspect of the present invention has a cleaning cloth supply means for supplying a cleaning cloth from a cleaning cloth supply roll, and a cleaning cloth take-up roll shaft rotatably supported by the side plate. A cloth winding means for winding the cleaning cloth suspended between the cloth supply means and the cleaning cloth winding roll shaft by rotating the cleaning cloth winding roll shaft, and a pressing means for pressing or releasing the cleaning cloth on the cylinder outer peripheral surface, The cleaning cloth take-up roll shaft is movably supported so as to change the relative position of the cleaning cloth take-up roll shaft with respect to the cleaning cloth supply roll, and the cleaning cloth take-up roll shaft is returned in the direction in which the cloth is fed out to wind the cloth. And a cloth feeding means for reciprocating in the returning direction. With the above construction, the cloth rewinding operation is started after the cleaning operation is completed, and the portion of the used cleaning cloth fed to the cleaning cloth winding means side that is less contaminated is returned to the cleaning cloth supply side. During the cleaning operation, the used cleaning cloth that has been rewound at the beginning is supplied and reused, so that the effective use of the cleaning cloth can reduce the consumption of the cleaning cloth and the running cost. Embodiments of the present invention will be described with reference to the drawings. (First Embodiment) FIGS. 1 and 2 show a schematic configuration of a first embodiment of the present invention. In this embodiment, a swing roller is used as a cloth rewinding means for rewinding a used cleaning cloth. In FIG. 1, a cleaning cloth supply roll 1
5, the cleaning cloth take-up roll shaft 16, and the pressure pad device (pressure pad 20, air chamber 21 and pedestal) as the pressing means are supported by the side plates 13 and 13a on both sides, and the side plates 13 and 13a are several. By the mounting studs 23, printing machine frames 2 on both sides of the machine
5, 25a. Cleaning cloth supply roll 1
The cleaning cloth 18 fed from 5 is the pressure pad 20.
And is further rotated around the swing roller 73 and is wound around the cleaning cloth winding roll shaft 16. The swing roller 73 is supported by two swing arms 69 and 69a, and one end of each of the swing arms 69 and 69a is fixed to a shaft 67 whose both ends are supported by the side plates 13 and 13a. A gear 68 is provided at the end of the shaft 67 penetrating one of the side plates 13, and the rotation of the gear 68 is transmitted to the shaft 67 to swing the swing arms 69, 69a. The swing arm 69 is always pulled in the Y direction, that is, upward by a spring 72, and a stopper 70 for restricting the upward movement (upper limit position) of the swing arm is provided. A spiral spring 49 is disposed at one of the cleaning cloth supply roll shaft ends 15a of the cleaning cloth supply roll 15. The spring 49 is housed in a spring case 47 fixed to the side plate. One end of the spring 49 is fixed to the spring case 47, and the other end of the spring 49 is fixed to the cleaning cloth supplying roll shaft end 15a. The direction is opposite to the direction in which the cleaning cloth 18 is supplied, that is, the cleaning cloth is supplied to the cleaning cloth. The cleaning cloth supply roll 15 is urged in the direction of rewinding to the roll. Where the spring 49
Is a drive means for applying rotational power in the cloth rewinding direction to the cleaning cloth supply roll of the cleaning cloth supply means. An intermittent drive device 50 as a cloth winding means is arranged at one end 16a of the cleaning cloth take-up roll shaft 16 as the cleaning cloth take-up roll shaft end 16a.
Drives the cleaning cloth take-up roll shaft 16 in the forward direction, that is, in the direction in which the cleaning cloth is taken up on the cleaning cloth take-up roll shaft 16.
Although the detailed structure of the intermittent drive device 50 is not shown, for example,
A mechanism as disclosed in Japanese Patent Publication No. 56-37069 is used. The cleaning cloth take-up roll shaft 16 is driven only in the forward direction, and is not driven in the reverse direction or rotated in the reverse direction. However, if necessary, the engagement with the intermittent drive device can be manually released to rotate freely forward and backward. A gear 68 attached to a swing arm shaft 67 is engaged with a gear 57 via an intermediate gear 62. The gear 62 can shift its position along the axis 60 and can stay in and out of engagement with the gear 68. The gear 57 is supported by a gear shaft 59 via a one-way clutch 58. One end of the gear shaft 59 is rotatably supported by the side plate 13,
A lever 55 is attached to the other end. Lever 5
When 5 swings, rotational movement is transmitted to the gear 57 via the gear shaft 59 and the one-way clutch 48. In this case, since the lever 55 and the gear 57 are engaged via the one-way clutch 58, the power is transmitted to the gear 57 only when one of the forward and reverse rotations of the gear shaft 59 is rotated. The swing of the lever 55 is performed by an air cylinder 51 connected to the other end of the lever 55 via a pin 54. That is, when the rod of the air cylinder 51 moves in the N direction, the lever 55 causes the gear 57 to rotate, the movement is transmitted to the gear 68 via the intermediate gear 62, and the swing arm 69 swings in the direction for supplying the cleaning cloth. To move.
This operation will be described with reference to FIGS. When the swing arm 69 swings, the swing roller 73 moves from point a to point b by one movement in the N direction of the air cylinder 51, and the cleaning cloth 18 is fed and supplied from the cleaning cloth supply roll 15 by that amount. . When the rod of the air cylinder 51 moves in the M direction, the gear shaft 59 rotates, but in this case, the one-way clutch 58 idles and power is not transmitted to the gear 57. Therefore, the swing roller 73 stops at the position b and does not return to the position a. In this way, the air cylinder 51
By repeating the reciprocating motion of the rod in the M direction or the N direction, the swing roller 73 steps in the direction of the arrow X as shown in the drawing, and intermittently feeds the cleaning cloth 18 forward. The above is called the primary cleaning cloth feeding mechanism. After the primary cloth feeding is completed, the swing roller 73 reaches the end point and maintains its position. Secondary cloth feeding starts from this state. For secondary cloth feeding, cleaning cloth take-up roll shaft 16
Intermittently winds a fixed amount of cleaning cloth. Then, when the cloth winding operation for the set number of times is completed and the cleaning step is completed, the cleaning cloth is fed back. First, when the gear 62 is shifted and disengaged from the gear 68, the shaft 67 becomes rotatable, the arm 69 is pulled by the spring 72, and the Y shown in FIG.
It swings in the direction, its movement is stopped by the stopper 70, and it returns to the original position a. At this time, the cleaning cloth 18 being fed out sags, but since the cleaning cloth supply roll 15 is biased by the spiral spring 49 in the direction in which the cleaning cloth 18 is unwound, the cleaning cloth 18 corresponding to the amount of slack is generated. That is, the cleaning cloth 18 having a length corresponding to the amount of the primary cloth fed by the swing roller 73 is rewound on the cleaning cloth supply roll 15. The cylinder cleaning apparatus according to the present invention performs all controls required for the cylinder cleaning operation, for example, control for spraying water, a solvent such as a cleaning liquid, onto a cleaning cloth with a spray nozzle, and air to a pressure pad constituting a pressing means. Send
Alternatively, it is equipped with a control system for executing control such as exhausting air from the pressure pad, and this control system is provided with a control function for reusing the cleaning cloth using the power featured by the present invention. Has been done. Next, the operation sequence of each part will be described in detail with reference to FIGS. (1) State before operation (see FIG. 3) Since the air chamber 21 on the back surface of the pad is not pressurized, the pressure pad 20 is in a contracted state and is separated from the surface of the blanket 12 as shown in the drawing. (2) State where the pressure pad 20 is pressure-bonded to the blanket 12 (see FIG. 4) Air is sent into the air chamber 21 and the pressure pad 20
Expands and presses the cleaning cloth 18 moistened by a solvent spray bar (not shown) onto the surface of the blanket 12. (3) First time of primary cloth feeding (see FIG. 5) Air is fed to the air cylinder 51, and the rod is moved to the arrow N
When the lever 55 is actuated in the direction, the lever 55 swings from the m position to the n position, the gears 57, 62, 68 rotate in the arrow directions by the corresponding angles, and the swing arm 69 moves the arrow X.
Rocks in the direction. With the movement of the swing arm 69, the swing roller 73 moves from point a to point b by about 3 to 5 mm.
The cleaning cloth 18 is moved and fed from the cleaning cloth supply roll 15. At this time, the cleaning cloth wound around the cleaning cloth take-up roll shaft also tries to be pulled out, but the cleaning cloth take-up roll shaft 16
Rotates only in the forward direction, the cleaning cloth 18 wound around the cleaning cloth winding roll shaft is not pulled out. (4) First end of primary cloth feeding (see FIG. 6) When the rod of the air cylinder 51 is actuated in the direction of arrow M, the lever 55 returns to point m. In this case, the lever 55 and the gear 57 are engaged by the one-way clutch 58, and the rotation is transmitted only when the lever 55 swings in the direction of m → n.
→ When moving in the direction of m, rotation is not transmitted. Therefore, even if the rod operates in the M direction, the swing arm 69 does not move, the swing roller 73 maintains the b position, and the cleaning cloth 18 does not move in either forward or reverse directions. (5) Second time of primary cloth feeding (see FIG. 7) The rod at the m position moves in the N direction again, and the arm 69 is swung in the X direction as in the first cloth feeding. As a result, the swing roller 73 moves from point b to point c, and the cleaning cloth 18 is fed in the direction of arrow A, that is, in the forward direction, as in the first time. The above-described steps from the first to the second feeding of the primary cloth are repeated several times (usually 5 to 6 times)
Is intermittently fed in the forward direction, and the primary cloth feeding of the cleaning cloth is completed. (6) Secondary cloth feed (see FIG. 8) After the primary cloth feed is completed, the rod of the air cylinder 51 returns to the original position m. At this point, the swing roller 73 is held at the position of the end point f of the primary cloth feeding. In this state, the secondary cloth feeding is started. The secondary cloth feeding is performed by driving the cleaning cloth winding roll shaft 16 in the direction of arrow A.
That is, the cleaning cloth take-up roll shaft end 16a is linked with the intermittent drive device 50 including the air cylinder 51, and the cleaning cloth 18 is intermittently wound up. Then, it is wound up a set number of times to finish the secondary cloth feeding. (7) Reverse feed of cleaning cloth (see FIG. 9) When the cleaning cloth 18 has been stepped a set number of times in the secondary cloth feeding step, the relative positions of the rollers, gears, levers and arms are set to the secondary cloth. It is kept in the feed state. When all the cleaning steps are completed, the step of feeding back a part of the used cleaning cloth 18 is started. First, the air in the air chamber 21 is removed from the state of the secondary cloth feed, and the pressure pad 20 is contracted.
Away from the surface of. Next, the gear 62 becomes the shift lever 65.
The gear 62 is disengaged from the gear 68. Then, the gear 68 is released from the restraint. The shaft 67 becomes free to rotate, and the swing arm 69 is pulled in the direction of the arrow Y by the spring 72 and hits the stopper 70 to return to the origin. By this operation, the cleaning cloth 18 existing between the cleaning cloth supply roll 15 and the cleaning cloth winding roll shaft 16 sags. The slack of the cleaning cloth causes the elastic force of the spring 49 on the cleaning cloth supply roll side to act. Therefore, the spring 49 causes the cleaning cloth supply roll 15 to rotate in the opposite direction, and the slack of the cleaning cloth 18 is rewound. The length of the loose cleaning cloth 18 is equal to the length of the cleaning cloth 18 fed by the primary cloth feeding. (Second Embodiment) FIG. 10 shows the configuration of the main part of a second embodiment of the present invention. In the present embodiment, the cleaning cloth is rewound by arranging two rods in parallel in the traveling direction of the cleaning cloth and moving them vertically. Since the basic configuration of the cylinder cleaning device is the same as that of the first embodiment described above, only the characteristic part of the second embodiment will be described here. The components having the same functions as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate. In FIG. 10, the upper guide roller 77 and the lower guide roller 78 are orthogonal to the traveling direction of the cleaning cloth 18,
Moreover, they are attached to the upper and lower sides of the upper and lower frames 76 so that they are parallel to each other. The upper and lower frames 76 are moved up and down by about 50 mm in the directions of arrows (a) and (b) by a drive mechanism (not shown). A cloth rewinding force by a spring is applied to the cleaning cloth supply roll 15. Further, the cleaning cloth take-up roll shaft 16 can be rotated only by a one-way clutch in a direction for winding the cleaning cloth fed from the cleaning cloth supply roll 15. Next, the operation sequence of each part will be described with reference to FIGS. (1) Cleaning start (see FIG. 11) When a cleaning start signal is given, water and cleaning liquid are sprayed onto the cleaning cloth 18 by the spray nozzle, and the air chamber 2
1. Air is sent to 1 and expands the pressure pad 20,
The cleaning cloth 18 is pressed against the surface of the blanket 12. (2) Primary cloth feeding (see FIG. 12) The upper and lower frames 76 are intermittently moved, and the upper guide roller 77 and the lower guide roller 78 are intermittently lowered in the direction of arrow (a). By moving the upper guide roller 77 and the lower guide roller 78, the cleaning cloth 18 is fed in the direction A. In the case of a sheet-fed offset printing machine, the feed amount of the cleaning cloth 18 per one time is typically about 5 mm, and the liquid is appropriately sprayed during the intermittent feed. Further, the cleaning cloth supply roll 15 has a cleaning cloth 18
And is rotated in the direction of arrow A to feed the cleaning cloth 18. At this time, the cleaning cloth take-up roll shaft 16 is not rotated by the one-way clutch. (3) Secondary cloth feed (see FIG. 13) When the primary cloth feed advances and the upper guide roller 77 and the lower guide roller 78 reach the lower limit position of the setting, the upper and lower frames 76 are restrained at that position. It The cleaning cloth take-up roll shaft 16 is intermittently rotated in the direction of arrow A by the intermittent drive device to feed the cleaning cloth 18 in the direction of arrow A. At this time, the cleaning cloth supply roll 15 is rotated in the direction of arrow A as in the case of the primary cloth feed. Either of the primary cloth feed and the secondary cloth feed described above may be operated first. (4) Reverse feed of cleaning cloth (see FIG. 14) When the secondary cloth feed reaches the set amount and the cleaning operation is completed, air is discharged from the air chamber 21 to contract the pressure pad 20 and the surface of the blanket 12. Keep away from. Next, when the upper and lower frames 76 are unconstrained and lifted in the direction of the arrow (b), the cleaning cloth 18 sags. By the way, since the cleaning cloth supply roll 15 is urged to rotate in the direction of arrow B, the slack of the cleaning cloth 18 is rewound to the cleaning cloth supply roll 15. When the upper and lower frames 76 return to their original positions, the amount of the cleaning cloth 18 sent during the primary cloth feeding is rewound. In this case, since the cleaning cloth take-up roll shaft 16 has a structure that does not reverse, even if the cleaning cloth 18 is fed in the direction of the arrow B, the cleaning cloth 18 of the cleaning cloth take-up roll shaft 16 is not pulled out. (5) End of cleaning process, return to original position (Fig. 1
5) The movement of the upper and lower frames 76 reaches the upper limit point, and the cleaning cloth 18
When the primary cloth feed amount of (3) is returned to the cleaning cloth supply roll 15, all the steps are completed, and the apparatus stands by for the next cleaning operation. (Third Embodiment) FIG. 16 shows the configuration of the main part of a third embodiment of the present invention. In this embodiment, the cleaning cloth take-up roll shaft is moved in parallel and the primary cloth is fed to rewind the cleaning cloth. Since the basic configuration of the cylinder cleaning device is the same as that of the first embodiment, only the characteristic part of the third embodiment will be described here.
The components having the same functions as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate. In FIG. 16, between the pressure pad 20 and the cleaning cloth winding roll shaft 16, a guide bracket 80 fixed to the side plates 13 and 13a shown in FIG.
A guide roller 81 attached to 80a is provided. The side frame has a cleaning cloth take-up roll shaft 1
Guide frames 82, 82a for moving 6 in parallel with the cylinder 11 are attached. The cleaning cloth take-up roll shaft end 16a is supported by the guide surface 83 of the guide frame, and the cleaning cloth take-up roll shaft 16 is moved along the guide surface 83 of the guide frame by a drive mechanism (not shown) along with the initial position X and the moving position. Translate to and from Y. A cloth rewinding force by a spring is applied to the cleaning cloth supply roll 15. The cleaning cloth take-up roll shaft 16
The one-way clutch can rotate only the direction in which the cleaning cloth fed from the cleaning cloth supply roll 15 is wound. Next, the operation sequence of each part will be described in detail with reference to FIGS. (1) Start of cleaning (see FIG. 17) When a signal of start of cleaning is given, water and cleaning liquid are sprayed onto the cleaning cloth 18 by the spray nozzle, and the air chamber 2
1. Air is sent to 1 and expands the pressure pad 20,
The cleaning cloth 18 is pressed against the surface of the blanket 12. (2) Primary cloth feed (see FIG. 18) When the cleaning cloth take-up roll shaft 16 is intermittently translated in the direction of arrow (a) without rotating, the cleaning cloth 18
Is fed in the direction of arrow A and supplied. (3) Secondary cloth feeding (see FIG. 19) When the cleaning cloth winding roll shaft 16 reaches the end point Y of the movement, the cleaning cloth winding roll shaft 16 is intermittently moved in the direction of arrow A by the intermittent drive device. Is rotated. As a result, the cleaning cloth 18 advances in the direction of arrow A. (4) Reverse feeding of cleaning cloth (see FIG. 20) When a predetermined amount of cleaning cloth 18 is wound around the cleaning cloth winding roll shaft 16 and the cleaning operation is completed, the air in the air chamber 21 is discharged and the pressure pad is pressed. 20 is contracted and the cleaning cloth 18 is separated from the blanket 12. Then, the cleaning cloth winding roll shaft 16 is moved from the Y position to the X position in the arrow (B) direction. In this case, the cleaning cloth take-up roll shaft 16 does not rotate. Since the cleaning cloth supply roll 15 is urged to rotate in the direction of arrow B, the slack of the cleaning cloth 18 is rewound onto the cleaning cloth supply roll 15. (5) Complete all cleaning steps, return to original position (Fig. 2
1) When the cleaning cloth take-up roll shaft 16 reaches the original position X and the slack of the cleaning cloth 18 is rewound to the cleaning cloth supply roll 15, all the steps of the cleaning operation are completed and the next cleaning operation is performed. Go into standby.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a first embodiment of a cylinder cleaning device according to the present invention. FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is an explanatory diagram showing a state before cleaning. FIG. 4 is an explanatory diagram when cleaning is started. FIG. 5 is an explanatory diagram when a cleaning cloth is supplied. FIG. 6 is an explanatory diagram when a cleaning cloth is not supplied. FIG. 7 is an explanatory diagram when a set amount of cleaning cloth is supplied. FIG. 8 is an explanatory diagram when the set amount supply of the cleaning cloth is completed. FIG. 9 is an explanatory diagram of a rewinding operation of the cleaning cloth. FIG. 10 is a configuration diagram of a main part of a second embodiment of a cylinder cleaning device according to the present invention. FIG. 11 is an explanatory diagram when cleaning is started. FIG. 12 is an explanatory diagram of a cleaning cloth supply operation. FIG. 13 is an explanatory diagram of a winding operation of the cleaning cloth. FIG. 14 is an explanatory diagram of the rewinding operation of the cleaning cloth. FIG. 15 is an explanatory diagram when the rewinding operation of the cleaning cloth is completed. FIG. 16 is a configuration diagram of a main part of a third embodiment of a cylinder cleaning device according to the present invention. FIG. 17 is an explanatory diagram when cleaning is started. FIG. 18 is an explanatory diagram of a cleaning cloth supply operation. FIG. 19 is an explanatory diagram of a winding operation of the cleaning cloth. FIG. 20 is an explanatory diagram of the rewinding operation of the cleaning cloth. FIG. 21 is an explanatory diagram when the rewinding operation of the cleaning cloth is completed. [Explanation of reference numerals] 11 ... Blanket cylinder, 12 ... Blanket, 13, 1
3a ... Side plate, 15 ... Cleaning cloth supply roll, 16
... Cleaning cloth winding roll shaft, 18 ... Cleaning cloth, 20 ... Pressure pad, 21 ... Air chamber, 23 ... Mounting stud, 2
5, 25a ... Printer frame, 47 ... Spring case, 48 ... Friction plate, 49 ... Spiral spring, 50 ... Intermittent drive device, 51 ... Air cylinder, 52 ... Mounting stay,
53 ... Knuckle, 54 ... Pin, 55 ... Lever, 56 ... Set screw, 57 ... Gear, 58 ... One-way clutch, 59 ... Gear shaft, 60 ... Shaft, 61 ... Bearing, 62 ... Gear, 63
... Shifter flange wheel, 64 ... Shifter roller, 65 ... Shifter lever, 66 ... Stopper, 67 ... Shaft, 68 ... Gear, 69, 69a ... Swing arm, 70 ... Stopper,
71 ... Spring hook, 72 ... Spring, 73 ... Swing roller, 74 ... Spring roller shaft, 76 ... Upper / lower frame, 77 ... Upper guide roller, 78 ... Lower guide roller, 80, 80a ... Guide roller bracket, 81 ... Guide roller

Claims (1)

(57) [Claims] A cleaning cloth supply means for supplying the cleaning cloth from the cleaning cloth supply roll, and a cleaning cloth take-up roll shaft rotatably supported by the side plate, and between the cleaning cloth supply means and the cleaning cloth take-up roll shaft. Cloth winding means for winding the suspended cleaning cloth by rotating the cleaning cloth winding roll shaft, pressing means for pressing or releasing the cleaning cloth to the cylinder outer peripheral surface, and between the pressing means and the cleaning cloth winding roll shaft. Placed,
Washing cloth feeding means having a swing roller swingably provided in a direction of feeding the washing cloth from the washing cloth supply roll, and feeding the cloth with a length arbitrarily set by the swing roller, and the washing is completed. And a cleaning cloth rewinding means for returning the swing roller to the original position and feeding a part of the cloth feed back to the cleaning cloth supply means side. 2. It has a cleaning cloth supply means for supplying cleaning cloth from a cleaning cloth supply roll and a cleaning cloth take-up roll shaft rotatably supported by the side plate, and is suspended between the cleaning cloth supply means and the cleaning cloth take-up roll shaft. A cloth winding means for winding the cleaning cloth thus wound by rotating a cleaning cloth winding roll shaft; a pressing means for pressing or releasing the cleaning cloth to the cylinder outer peripheral surface; and a cleaning cloth supply means in the feeding direction of the cleaning cloth. There are rods or rollers arranged in parallel between the pressing means and between the pressing means and the cleaning cloth take-up roll shaft, and these two rods or rollers are respectively arranged in a direction in which the cloth is fed out and a backward direction.
A cylinder cleaning device comprising: a cloth feeding unit that reciprocates in a direction in which the cloth is rewound . 3. A cleaning cloth supply means for supplying the cleaning cloth from the cleaning cloth supply roll, and a cleaning cloth take-up roll shaft rotatably supported by the side plate, and between the cleaning cloth supply means and the cleaning cloth take-up roll shaft. A cloth winding means for winding the suspended cleaning cloth by rotating the cleaning cloth winding roll shaft; a pressing means for pressing or releasing the cleaning cloth to the cylinder outer peripheral surface; and a cleaning cloth winding roll shaft for the cleaning cloth supply roll.
The cleaning cloth winding roll so that the relative position is changed.
The cleaning cloth take-up roll shaft is supported by a cloth
A cylinder cleaning device, comprising: a cloth feeding means that reciprocates in a feeding direction and a returning and unwinding direction of the cloth.