JP3022324B2 - Printing machine cylinder cleaning method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a printing press cylinder using a cleaning sheet used for cleaning a printing press cylinder such as a blanket cylinder of an offset printing press.

[0002]

2. Description of the Related Art Printing machine cylinders such as blanket cylinders are regularly cleaned of the surface because the printing operation causes surface contamination over time. A cleaning device using a cleaning sheet is used for cleaning the surface of such a printing press cylinder. This is to allow the cleaning sheet made of non-woven fabric impregnated with the cleaning liquid to be able to run on the pressing part that can be brought into contact with and separated from the surface of the printing machine cylinder,
By moving the pressing portion into contact with the cylinder surface during the cleaning operation, the surface dirt is wiped and removed using the nip pressure of the pressing portion and the rotation of the printing cylinder. Conventionally, in this type of cleaning apparatus, a cleaning sheet roll serving as a supply roll is disposed behind a pressing portion having a length equivalent to the cylinder length of a printing press cylinder to be cleaned. The sheet roll for cleaning is obtained by using a paper tube as a core tube material, fixing the surface of the paper tube and the starting end of the cleaning sheet with an adhesive, and winding the cleaning sheet around the paper tube in a roll shape. A winding metal shaft is arranged on the winding side. In order to be able to attach a cleaning sheet to the metal shaft for winding, a method of blasting a surface having a high friction coefficient or a method of bonding and fixing a wrap having a textured surface is used. Alternatively, a method is also used in which a metal shaft for winding and a cleaning sheet are directly adhered with tape. In the method of attaching a metal shaft for winding and a cleaning sheet using this tape, first, a fixing tape is prepared, and the tape is cut so as to correspond to the width of the cleaning sheet. Next, the cleaning sheet is positioned on the winding metal shaft, and both are fixed with the cut tape.

After the cleaning sheet is set in the cleaning apparatus, the cylinder is cleaned while the cleaning sheet is wound around the winding metal shaft by intermittently rotating the winding metal shaft. ing.

Here, when the winding of the cleaning sheet on the winding metal shaft proceeds and the cleaning sheet roll runs out, the pressing portion of the cleaning device is released from the cylinder of the printing press, and the cleaning device is stopped. After the cleaning device is stopped, an operator peels off the adhesive portion between the paper tube and the winding start end of the cleaning sheet roll in the cleaning sheet roll, or cuts the winding start end of the cleaning sheet with a tape cutter or the like. Remove the cleaning sheet. Then, the used cleaning sheet is removed from the cleaning device together with the winding metal shaft, moved to another location, the cleaning sheet is unwound from the winding metal shaft, and then wound again on the original paper tube. The used cleaning sheet wound around the original paper tube in this way is discarded together with the paper tube. Alternatively, the cleaning sheet is unwound from the winding metal shaft, and both the cleaning sheet and the paper tube are discarded. After these discarding operations are completed, a new cleaning sheet roll is placed in the cleaning device, and the cleaning sheet is attached to the winding metal shaft again to clean the printing press cylinder.

[0005]

A metal shaft for winding is used for winding the cleaning sheet. However, in order to fix the cleaning sheet on the surface of the metal shaft for winding, the friction coefficient is increased. It is necessary to perform a surface treatment to increase the surface roughness, or to bond and fix an uneven wrap. For this reason, there was a problem that an expensive metal shaft for winding had to be purchased. In the method of directly attaching the cleaning metal sheet and the cleaning sheet with a tape, it is necessary to perform a simultaneous operation of positioning the cleaning sheet on the winding metal shaft and fixing the cleaning sheet with the tape. However, this simultaneous operation is very difficult, and when the tape is applied, the relative position between the cleaning sheet and the winding metal shaft may be changed. When the used cleaning sheet is wound by the winding metal shaft due to the change in the relative position, there is a possibility that winding disorder may occur. In addition, it takes time and effort to attach the tape, which causes a reduction in work efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and has as its object to improve the work efficiency when attaching a cleaning sheet to a winding tube.

[0007]

[0008]

SUMMARY OF THE INVENTION A printing press cylinder cleaning method using a cleaning sheet is a printing press that wipes the surface of the printing press cylinder by moving the cleaning sheet into contact with a rotating printing press cylinder while moving the cleaning sheet. A method for cleaning a cylinder, wherein the cleaning sheet provided with a bonding portion to a take-up tube in advance at a feed-out end of the cleaning sheet having a winding start end bonded to a core tube material is provided at the bonding portion. adhered to, Ri taken up on the winding tube, feeding the cleaning sheet from the core tube member
After taking out, removing the cleaning sheet and the winding tube
The core tube material that has sent out the cleaning sheet is rolled up.
It was decided to use it as a canal.

[0009]

According to the above construction, an adhesive portion that can be attached to the take-up tube is provided in advance at the leading end of the feeding of the cleaning sheet. To attach the cleaning sheet thus configured to the cylinder cleaning device of a printing press, first, the winding start side of the cleaning sheet is set as the cleaning sheet supply side. Next, the leading end of the cleaning sheet is attached to a take-up tube on the take-up side. At this time, since the adhesive portion that can be attached to the take-up tube is provided in advance on the leading end portion of the washing sheet, the attachment of the wash sheet to the take-up tube is performed by:
All that is required is to press the leading end of the cleaning sheet against the take-up tube. Therefore, it is possible to shorten the replacement time of the cleaning sheet roll, and it is possible to improve work efficiency.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cleaning apparatus using a printing press cylinder cleaning method using a cleaning sheet roll according to the present invention will be described below in detail with reference to the drawings.

First, the overall structure of a printing press cylinder cleaning apparatus will be described with reference to FIGS. The printing press cylinder cleaning device 10 is disposed to face a blanket cylinder 12 serving as a printing press cylinder to be cleaned, and includes a pair of side plates 14 and a stay 16 having an H-shaped cross-section passed between the side plates. And a frame composed of Stay 1
Reference numeral 6 includes a main stay 20 which is opposed to the blanket cylinder 12 and to which the pressing portion 18 is attached, and a pair of upper and lower cleaning sheet guide stays 22. A cleaning sheet roll 26 serving as a supply roll formed by winding a cleaning sheet 24 made of a nonwoven fabric into a roll and a take-up tube 28 are arranged behind the stay 16, and the cleaning sheet 24 is fed out from the cleaning sheet roll 26. In the drawing, the upper guide stay 22U passes through the pressing portion 18, passes through the lower guide stay 22D, and is taken up by the rear take-up tube 28. Also, depending on the object to be cleaned, the cleaning sheet 24 may be fed out, wound from the lower guide stay 22D, via the pressing portion 18, through the upper guide stay 22U, and taken up by the rear take-up tube 28. The take-up of the cleaning sheet 24 is performed by intermittently rotating the take-up tube 28, and a drive mechanism for this is provided on the side plate 14. Further, a cleaning liquid supply nozzle 30 is arranged on the side (upper part in the drawing) of the pressing portion 18 inside the stay 16 so as to appropriately supply the cleaning liquid to the cleaning sheet 24. This allows
The cleaning sheet 24 that is intermittently fed reaches the leading end of the pressing portion 18 while being moistened with the cleaning liquid. At this time, the device frame is advanced by a mechanism (not shown) to bring the pressing portion 18 into contact with the surface of the blanket cylinder 12. As a result, a cleaning action is achieved.

An electric motor 32 for intermittently driving the winding tube 28 is mounted on the side plate 14, and a driving gear 36 is mounted on a rotating shaft 34 of the electric motor 32. The side plate 14 further includes a spindle 38 inserted into the opening of the winding tube 28 and the cleaning sheet roll 26.
The spindle 40 inserted into the opening of the core tube material is rotatably mounted, and the spindles 38, 40 are provided with gears 38A, 40A, respectively. These gears 38A and 40A are rotated by the driving force from the driving gear 36 to convey the cleaning sheet 24.

FIG. 1 is a state diagram showing the overall structure of the cleaning sheet roll 26. As shown in FIG. As shown in the figure, the cleaning sheet roll 26 is formed by winding the cleaning sheet 24 in a roll shape, and a paper tube 42 serving as a core tube material is placed at the center thereof. That is, the cleaning sheet roll 26 is
The winding start end of the cleaning sheet 24 is adhesively fixed to the paper tube 42 using an adhesive 44, and the cleaning sheet 24 is wound in a roll around the paper tube 42. Further, a double-sided pressure-sensitive adhesive tape 46 serving as an adhesive portion is provided at the leading end of the feeding of the cleaning sheet 24. The double-sided adhesive tape 46 is located on the side opposite to the surface in contact with the blanket cylinder 12, and a release paper 46A serving as a covering material is attached to the surface of the double-sided adhesive tape 46. The provision of the release paper 46A prevents the cleaning sheets 24 from sticking to each other even when the cleaning sheets 24 overlap.

A take-up tube 28 for taking up the cleaning sheet 24
Has a paper tube 48 which is used as a core tube material of a used sheet roll.
(See FIG. 4). Here, the paper tube 48 and the aforementioned paper tube 4
2 is only the difference before and after use, and since the members related to the paper tube 48 have the same configuration, the members related to the paper tube 48 are given the same numbers as those on the paper tube 42 side for explanation. .
That is, in the previous cleaning operation of the blanket cylinder 12 in which the paper tube 48 becomes a new roll, after all the cleaning sheets 24 are sent out, the paper tube 48 and the cleaning sheet 24 are separated. Next, the paper tube 48 from which the cleaning sheet 24 has been cut off is removed from the spindle 40. Then, the paper tube 48 is mounted on the spindle 38, and is provided in the printing cylinder cleaning device 10. The leading end of the cleaning sheet 24 drawn out from the new roll is brought closer to the paper tube 48 provided via the pressing portion 18. Then, the release paper 46A is peeled off, the double-sided adhesive tape 46 is attached to the paper tube 48, and the cleaning sheet 24 and the paper tube 48 are fixed.

An operation procedure for cleaning the blanket cylinder 12 using the printing press cylinder cleaning apparatus 10 configured as described above will be described.

FIG. 4 is a state diagram showing the progress from the cleaning operation of the blanket cylinder 12 to the replacement of the cleaning sheet roll 26. (1) in the same figure is a state diagram showing a state in which the blanket cylinder 12 is being cleaned. As shown in the drawing, an unused cleaning sheet roll 26 is rotatably mounted on a printing press cylinder cleaning device 10 by a spindle 40. The paper tube 48 used as the winding tube 28 is also rotatably mounted on the cylinder cleaning device 10 by the spindle 38.
Here, the cleaning sheet 24 pulled out from the cleaning sheet roll 26 is taken up by the pressing portion 18 toward the paper tube 48 by an intermittent operation while the blanket cylinder 12 is cleaned.

FIG. 2B is a diagram showing a state in which the cleaning sheet 24 is completely fed from the cleaning sheet roll 26.
Here, the cleaning sheet 24 is almost wound around the paper tube 48, and the surface of the paper tube 42 is exposed in the cleaning sheet roll 26, and only the winding start end of the cleaning sheet 24 is connected to the paper tube via the adhesive 44. 42 is fixed. In this state, the operator stops the cleaning operation of the printing press cylinder cleaning device 10 and performs the replacement operation of the cleaning sheet roll 26. First, the adhesive 44 fixing the paper tube 42 and the cleaning sheet 24 is peeled off, or the winding start end of the cleaning sheet 24 is cut with a tape cutter or the like, so that the paper tube 42 and the cleaning sheet 24 are separated. The cleaning sheet 24 separated from the paper tube 42 is all wound around the paper tube 48, removed from the printing press cylinder cleaning device 10 together with the paper tube 48, and discarded. After the paper tube 48 is removed from the spindle 38, the paper tube 42 is mounted on the spindle 38 and used as the winding tube 28. After the paper tube 42 is mounted on the spindle 38, the leading end of the cleaning sheet 24 is drawn out from the cleaning sheet roll 26, which is a new roll, and approached to the paper tube 42 via the pressing portion 18. Next, the release paper 46A is peeled from the double-sided adhesive tape 46 at the leading end of the cleaning sheet 24, and the double-sided adhesive tape 46 is attached to the paper tube 42, and the cleaning sheet 24 and the paper tube 4 are removed.
2 is fixed. A state diagram in which a paper tube 42 is used as the winding tube 28 and a new cleaning sheet roll is mounted on the spindle 40 is shown in FIG.

As described above, (1), (2),
When the procedure of (3) is repeatedly performed, an adhesive portion is provided at the leading end of the cleaning sheet 24, so that the leading end of the cleaning sheet 24 and the winding tube 28 can be easily fixed. Therefore, the cleaning sheet roll 2
The replacement time of No. 6 can be shortened. In addition, since the fixing means is provided at the leading end of the feeding of the cleaning sheet 24, both can be fixed only by positioning the front end of the cleaning sheet 24 to the winding tube 28. For this reason, the relative position does not fluctuate in the attaching operation, and the winding of the used cleaning sheet can be prevented.

When performing a new cleaning operation, for example, a cleaning sheet roll 26 is purchased and one of the blanket cylinders 12 is removed.
When the second cleaning is performed, the paper tube cannot be taken out from the used cleaning sheet roll 26 and used as the winding tube 28 because there is no used cleaning sheet roll 26. However, it is not necessary to unwind the purchased unused cleaning sheet roll 26 and take out the paper tube and use it as the take-up tube 28. The cleaning operation can be performed without any problem. And for the second and subsequent washing operations,
As described above, the paper tube taken out from the used cleaning sheet roll 26 may be used as the winding tube 28.

In this embodiment, the double-sided adhesive tape 46 is used as the adhesive portion, but an adhesive or another fixing means may be used for the purpose of fixing the cleaning sheet 24 and the paper tube.

[0021]

As described above, according to the present invention, the bonding portion to the take-up tube is previously provided at the leading end portion of the feeding sheet of the cleaning sheet to which the starting end to the core tube material is adhered. The work of attaching the cleaning sheet to the vehicle becomes easy. For this reason, it is possible to shorten the replacement time of the cleaning sheet roll, and it is possible to improve work efficiency.

[Brief description of the drawings]

FIG. 1 is a state diagram showing an overall configuration of a cleaning sheet roll 26.

FIG. 2 is a side view showing the overall configuration of the printing press cylinder cleaning device.

FIG. 3 is a front view showing the entire configuration of the printing press cylinder cleaning device.

FIG. 4 is a state diagram showing a process from a cleaning operation of the blanket cylinder to a replacement of a cleaning sheet roll.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 printing machine cylinder cleaning device 12 blanket cylinder 14 side plate 16 stay 18 pressing portion 20 main stay 22 (22U, 22D) guide stay 24 cleaning sheet 26 cleaning sheet roll 28 winding tube 30 cleaning liquid supply nozzle 32 electric motor 34 rotating shaft 36 Drive gear 38 Spindle 38A Gear 40 Spindle 40A Gear 42 Paper tube 44 Adhesive 46 Double-sided adhesive tape 46A Release paper 48 Paper tube

Claims (1)

(57) [Claims] 1. A printing press cylinder cleaning method for wiping the surface of a printing press cylinder by bringing a cleaning sheet into contact with a rotating printing press cylinder while moving the printing sheet, wherein the starting end of the winding is adhered to a core tube material. previously provided with the cleaning sheet adhesion portion of the winding tube feeding tip of the cleaning sheet adhered to the winding tube at the bonded portions, Ri wound <br/> taken to the winding tube After sending out the cleaning sheet from the core tube material
Before removing the cleaning sheet and the winding tube,
The core tube material that has sent out the cleaning sheet is referred to as the winding tube.
Cleaning method of a printing press cylinder characterized by being used .