JP4756772B2 - Cylinder cleaning device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a cylinder cleaning device that cleans the surface of a cylinder such as a blanket cylinder, an impression cylinder, and an ink roller of an offset printing machine with a cleaning fabric, and more particularly to a pressure pad mounting structure that presses the cleaning fabric against the outer periphery of the cylinder.
[0002]
[Prior art and problems]
Conventionally, in a cylinder cleaning apparatus for cleaning a cylinder surface such as a blanket cylinder of an offset printing machine, the cleaning fabric is pressed with a brush (Japanese Patent Publication No. 56-501197) or pressed with a solid pressure pad made of an elastic body. Or a pressure pad made of an elastic material having a uniform thickness, or an air pad that is pressed by expanding it with compressed air and pressed against the outer peripheral surface of the cylinder.
The pressing force of the pad means a force that presses the cleaning fabric against the cylinder surface when the cylinder is rotating. The appropriate pressing force varies depending on the rotational speed, and in practice, the appropriate pressing force is determined by whether ink is applied to the cylinder and the ink can be wiped off. On the other hand, the uniformity of the cleaning power is determined by whether or not the nip width is uniform over the longitudinal direction of the pad.
The pressure pad with a uniform thickness is cleaned with the cylinder rotating at a low speed, usually 8 RPM. When cleaning is performed by pressing a pressure pad against a rotating cylinder, the pressure pad hits the gap of the cylinder and receives an impact, generating sound and vibration. Therefore, the conventional pressure pad with uniform thickness is not suitable for cleaning by high speed rotation (70 RPM).
The air pad method is used for cleaning at high speed rotation, but there are disadvantages such as requiring an auxiliary device such as an air source, piping, and air control. In addition, as a countermeasure against the generation of sound and vibration, parts such as the support bar to which the pressure pad is attached are made by cutting an aluminum cast block and using it to make the entire device a rigid structure. There were problems that had to be improved, such as an increase in size and weight, and that it was not easy to attach and remove during maintenance.
Usually, when a pressure pad is attached to a support bar, a clamp bar is applied to the outer surface of the pad attachment portion and screwed. In such a mounting structure, the clamp bar must be prepared as a separate part. Since this clamp bar is screwed at several places, not only the screw for that purpose is required, but also the pressure pad over the entire length. There was a problem that fine adjustment was required for tightening of each screw so that a uniform contact with the outer periphery of the cylinder was obtained.
Furthermore, in order to improve the above problems, a structure in which the support bar and the crank bar are integrated has been proposed. However, when the pressure pad is fixed to the support bar, a single space is provided between the pressure pad and the support bar. The inner bar is inserted and the inner bar is fixed to the support bar. However, since the pressure pad is made of an elastic material, if the inner bar is inserted into a long tunnel-shaped space, it will be caught on the inner surface of the pressure pad in the middle of the pressure pad, and it will not be easy to fix it in the proper position, and workability Was bad. If a gap is formed between the pressure pad, the inner surface and the inner bar, it is easy to insert, but strong tightening cannot be performed. When the inner bar is formed of one member in this way, there is a problem that the pressure pad cannot be firmly fixed.
An object of the present invention is to provide a cylinder cleaning apparatus having a pressure pad that exhibits a cleaning effect equivalent to that of an air pad when cleaning is performed at high speed rotation and is firmly and easily mounted on a cleaning unit.
[0003]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention provides a cylinder cleaning device for cleaning a cylinder outer peripheral surface by pressing a cleaning fabric supplied from a cleaning fabric supply supported by a cleaning fabric supply support on a cylinder outer periphery. Because
A pressure pad formed of an elastic material and integrally formed with a central portion contacting the back surface of the cleaning fabric and a pad mounting portion facing the end side; and
A support bar that extends in the longitudinal direction of the cylinder and has a channel-shaped portion that is open on the side facing the cylinder, and that locks the pad mounting portion inside the channel;
An inner bar disposed on the inner side of the pressure pad with the pad mounting portion being locked to the support bar, and mounting the pressure pad on the support bar between the channel side walls; Prepared,
The inner bar includes two end inner bars that abut each of the opposing pad mounting portions, and a middle inner bar that applies a clamping force to the channel side wall of the pad mounting portion via the two end inner bars. Comprising the middle inner bar by fixing it to the support bar The two end inner bars are respectively moved toward the corresponding channel side walls, and the pad mounting portions are pressed against the channel side walls to It is characterized by generating a tightening force.
According to the invention of claim 1, since the inner bar is divided into three members consisting of the end inner bar and the middle inner bar, the narrower formed between the pressure pad deformed into a convex shape and the support bar. Each inner bar is easy to put in a long tunnel-like space. Further, the operation of fixing the inner inner bar to the support bar strongly tightens the pad mounting portion of the pressure pad to the channel side wall, so that the pressure pad can be firmly attached to the support bar. Thus, when cleaning the cylinder, the pressure pad can be stably pressed against the cylinder surface through the cleaning cloth, the nip width and the nip state are stable, and the pressure pad is provided, for example, for attaching a blanket. Even when the cylinder gap collides with the cylinder gap, the pressure pad does not loosen, and the life of the pressure pad is extended.
[0004]
According to a second aspect of the present invention, in the first aspect of the invention, the pad mounting portion is formed to project outward, and a groove into which the pad mounting portion is fitted is provided in the channel forming direction on the channel side wall. Features.
According to the second aspect of the present invention, when the pressure pad is mounted, if the top of the convex pressure pad is pushed by hand, the pad mounting portion enters the groove on the channel side wall, so that the inside of the convex pressure pad The space is widened, the end inner bar is stable, the middle inner bar is easily fitted, and the pressure pad can be easily and firmly attached to the channel.
[0005]
The invention of claim 3 is characterized in that, in the invention of claim 1, the pressure pad has a structure in which an elastic restoring force acts in the direction of the side wall of the channel when the pressure pad is inserted into the channel of the support bar.
According to the third aspect of the present invention, the force for spreading outward is exerted by the elastic restoring force of the pressure pad, so that the pad mounting portion enters the groove exactly and is stably held.
[0006]
The invention of claim 4 is characterized in that, in the invention of any one of claims 1 to 3, the pressure pad has a thin central portion and is thick from the central portion to the opposing pad mounting portion.
According to the invention of claim 4, since the impact received from the rotating cylinder is absorbed by the thick portion and the uniform pressing force can be secured by the thin portion, the impact during the rotation of the cylinder can also be effectively absorbed. At the same time, the cleaning fabric can be pressed against the outer periphery of the cylinder with the same pressing force as in the conventional air pad method.
If the pad mounting portion is not firmly fixed with such a pressure pad, the above-described effect cannot be exhibited and the thin-walled portion may be weakened. However, the present invention can surely obtain the above-described effect.
[0007]
The invention of claim 5 is characterized in that, in the invention of claim 1, the pressure pad is formed into a flat plate shape.
According to the fifth aspect of the present invention, the pressure pad is formed into a flat plate shape so that it does not lose its shape even in a roll form and can be made compact. Therefore, it is convenient to carry and the storage space can be reduced. In addition, when mounting on the cleaning unit, it is convex and inserted into the channel of the support bar, so the force to spread outward by the elastic restoring force of the pressure pad works, so that the pad mounting part fits into the groove exactly Can do.
[0008]
According to a sixth aspect of the present invention, in the first aspect of the invention, the two end inner bars have a tapered surface on the side opposite to the contact side with each of the opposing pad mounting portions, and the middle inner bar has two ends. It has a reverse taper surface opposite to the taper surface of the inner bar, and the reverse taper surface of the middle inner bar slides on the taper surfaces of the two end inner bars by the operation of fixing the middle inner bar to the support bar. Is moved in the channel side wall direction to generate a tightening force to the channel side wall of the pad mounting portion.
According to the invention of claim 6, since the middle inner bar moves along the reverse taper surface of the inner inner bar during the operation of fixing the inner inner bar to the support bar, the fixing operation can be performed smoothly and adjusted. Easy to attach firmly.
[0009]
According to a seventh aspect of the present invention, in the first aspect of the present invention, a pedestal portion extending in the longitudinal direction of the cylinder is provided at the center of the channel bottom wall of the support bar, and the end inner bar is positioned on the side of the pedestal portion. The extending part and the base part which contact | abut on the base part are provided, It is characterized by the above-mentioned.
According to the invention of claim 7, since the jaw portion of the end inner bar abuts on the upper surface of the pedestal portion and the extension portion is regulated by the pad mounting portion, the end inner bar is prevented from falling inward. In addition, since the space between the end inner bars is ensured, the middle inner bar can be easily inserted, and the workability is improved.
[0010]
The invention according to claim 8 is the invention according to claim 1, wherein the end plates connecting the three inner bars are fixed to both ends of the two inner end bars and the inner inner bar after the pressure pads are attached to the support bar. It is characterized by.
According to the present invention, the end inner bar may move in the longitudinal direction of the cylinder and jump out depending on the state of fixing the pressure pad to the support bar and depending on the cylinder rotation speed and the pressure pad. By connecting the individual inner bars, the above problem can be addressed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a cylinder cleaning apparatus of the present invention. FIG. 2 is a rear view. FIG. 3 is a plan view of the adapter plate. FIG. 4 is an exploded view of the cylinder cleaning device.
The cylinder cleaning device is configured as a cleaning unit that is attached to face the cylinder 1 of the printing press. The cleaning unit includes a cleaning fabric supply support 3 that supports a cleaning fabric supply 2, and a cleaning fabric supply 2. Cleaning fabric advancement section 5 for feeding out the cleaning fabric 4 from the cleaning fabric, cylinder pressing section 6 for pressing the cleaning fabric 4 stretched between the cleaning fabric supply support section 3 and the cleaning fabric advancement section 5 against the surface of the cylinder 1, and the cleaning fabric 4 A mechanism portion 7 is provided that presses or separates the cylinder from the cylinder outer peripheral surface.
[0012]
The present embodiment is a cylinder cleaning device using a cleaning fabric supply roll in which a cleaning fabric 4 preliminarily impregnated with a cleaning liquid is wound around a winding core as a cleaning fabric supply body 2. Each surface is provided with a protruding member. The projecting member is constituted by a core projecting portion in which the core is extended from the end face of the cleaning fabric supply roll, or another member that is extended by connecting the core to a part of the core through press-fitting or screwing.
The pressure pad 10 constituting the cylinder crimping portion 6 is made of an elastic material such as nitrile rubber, and the shape before being attached to the cleaning unit is formed into a flat plate shape as shown in FIG. For this purpose, the pad mounting part 11 is provided on the opposite side, the central part is thinned, and the pad part 11 is formed thick from the central part to the pad mounting part 11.
[0013]
Side plates 20 are arranged on opposite sides of the cleaning unit, and support bars 21 are fixed to the side plates 20. The portion of the support bar 21 facing the cylinder 1 has a channel-shaped portion 210 that extends in the longitudinal direction of the cylinder 1 and that is open on the side facing the cylinder 1. 11 is installed.
[0014]
In FIG. 6, a pedestal portion 211 is formed in the center of the bottom wall in the channel 210, and grooves 212 into which the pad mounting portions 11 are fitted are formed on the side walls on both sides of the pedestal portion 211. The pedestal 211 and the groove 212 extend in the channel forming direction. The end inner bars 213A and 213B have a tapered surface 213a on the side opposite to the contact side with the pad mounting portion 11 of the pressure pad 10, and an extension portion located on the side of the base portion 211 on the contact side. 213b is provided. An interval 214 between the inner side of the pad attachment portion 11 and the side end of the pedestal portion 211 is slightly larger than the thickness t of the end inner bar 213b.
[0015]
After the pad mounting portion 11 is fitted and locked in the groove 212 by the outward elastic restoring force of the pressure pad 10, the extension portion 213b of the end inner bars 213A and 213B is extended from the end portion of the support bar 21 to the pad mounting portion 11 and the base. When being inserted into the portion 211 after being aligned, the end inner bars 213A and 213B can be smoothly inserted without being caught by the inner surface of the pressure pad 10 by the gap 214, and the jaw portion 213c is placed on the upper surface of the pedestal portion 211. Since the contact portion and the extended portion 213b are restricted by the pad mounting portion 11, the end inner bars 213A and 213B are prevented from falling inward, and the subsequent middle inner bar 215 can be easily inserted.
After inserting the two end inner bars 213A and 213B, the middle inner bar 215 is inserted between the end inner bars 213A and 213B, and the middle inner bar fixing screw 216 is inserted from the back side of the support bar 21 into the middle inner bar 215. The screwed pressure pad 10 is attached to the.
[0016]
The middle inner bar 215 has reverse tapered surfaces 215a and 215b opposite to the tapered surfaces of the end inner bars 213A and 213B. When the middle inner bar fixing screw 216 is screwed into the middle inner bar 215, the middle inner bar 215 is reversed. The tapered surfaces 215a and 215b slide on the tapered surfaces 213a of the end inner bars 213A and 213B and move between the end inner bars 213A and 213B to move toward the side wall, thereby tightening the pad mounting portion 11 to the channel side wall. Generate power.
[0017]
After the screwing of the middle inner bar fixing screw 216 is completed, the end plate 217 is applied to the end inner bars 213A and 213B and both ends of the middle inner bar 215, and the screw holes 213d and 215c of each inner bar through the holes 218. Screw a screw (not shown) into the inner bar and connect the inner bars. This prevents the end inner bars 213A, 213B from shifting in the longitudinal direction of the support bar 21 due to vibrations transmitted through the pressure pad 10 during the cleaning operation, and prevents the end inner bars 213A, 213B from coming off and jumping out.
[0018]
A procedure for attaching the pressure pad will be described with reference to FIG. The flat pressure pad 10 is bent outwardly like a two-dot chain line, is inserted into the channel 210 of the support bar 21 from the direction of the arrow, and the pad mounting portion 11 is inserted into the groove 212 (FIG. 7 (1)). . At this time, the pressure pad 10 tries to spread outward by the elastic restoring force of the pressure pad 10 and is held in the channel (FIG. 7 (2)). The inner end bars 213A and 213B are inserted from one end side of the support bar 21 with the tapered surface inward (FIG. 7 (3)). Subsequently, the middle inner bar 215 is inserted in the same manner as the end inner bars 213A, 213B, the middle inner bar fixing screw 216 is screwed into the middle inner bar 215 from the back side of the support bar 21, and the end inner bars 213A, 213B and the middle inner bar The taper surface of the bar 215 is slid into and fixed (FIG. 7 (4)). The inner inner bar 215 wedges the end inner bars 213A and 213B in the direction of the pad mounting portion 11, presses the pad mounting portion 11 against the channel side wall to generate a tightening force, and the pressure pad 10 is applied to the support bar 21. Fix (FIG. 7 (5)). Thereafter, the end plate 217 is screwed 218 to the end inner bar and the middle inner bar at both ends of the support bar 21 to complete the mounting of the pressure pad 10.
[0019]
In FIG. 1, a slot-like guide portion 23 constituting the cleaning fabric supply body support portion 3 is screwed to the mutually opposing surfaces inside the plate 22. The slot-like guide portion 23 is disposed so as to guide the protruding member of the cleaning fabric supply roll 2.
[0020]
When the diameter of the cleaning fabric supply roll 2 is reduced by feeding the cleaning fabric 4 from the cleaning fabric supply roll 2, the slot-shaped guide portion 23 guides the displacement of the protruding member toward the support bar 21. The response member 30 shown acts on the outer periphery of the cleaning fabric supply roll 2 and restricts the movement of the cleaning fabric supply roll 2 in the slot-shaped guide portion 23 in the opposite direction. That is, the placement position of the cleaning fabric supply roll can be reliably stabilized by the guide function of the slot-shaped guide portion and the roll pressing function of the responding member.
[0021]
When the diameter of the cleaning fabric supply roll 2 becomes smaller and lighter, the cleaning fabric supply roll 2 tends to move in the delivery direction from the placement position by the tensile force when the cleaning fabric 4 is delivered. At this time, when the cleaning fabric supply roll 2 moves away from the placement position, the cleaning fabric supply roll 2 rotates and returns to the original placement position. Such a movement of the cleaning fabric supply roll 2 occurs every time the cleaning fabric 4 is sent out, and the dancing phenomenon of the cleaning fabric supply roll 2 occurs. When the cleaning fabric supply roll 2 dances, not only does the delivery of the cleaning fabric become unstable, but also the cleaning fabric 4 approaches the end and cannot detect accurately to know the remaining amount. As a countermeasure, a responding member 30 is provided to suppress the dancing of the cleaning fabric supply roll 2.
[0022]
The responding member 30 includes an arm 31 supported at one end by an arm shaft 34 rotatably attached to the side plate 20, and a rotating roller 32 provided at the other end of the arm 31. The arm 31 is urged in the direction of the slot-shaped guide portion 23 by urging means (see FIG. 4) including a spring 33, and the rotating roller 32 acts on the outer periphery of the roll with an appropriate pressing force. The arm shaft 34 is fitted with a rotatable sleeve 35 and guides the cleaning fabric 4 wound around the cleaning fabric winding shaft 40.
[0023]
The cleaning fabric advancing unit 5 is a cleaning fabric take-up bearing portion 41 that detachably supports one end of the cleaning fabric take-up shaft 40, and a cleaning fabric that transmits the rotational force by detachably connecting the other end of the cleaning fabric take-up shaft 40. It comprises a fabric winding shaft portion 42 and a cleaning fabric feed mechanism for rotating the shaft portion. One end of the cleaning fabric take-up shaft 40 is provided with a movable plug 43 that is movable in the axial direction and biased in a direction protruding from the shaft, and the movable plug 43 is a cleaning fabric take-up bearing portion. 41 is engaged with a socket having the same cross section.
[0024]
A fixed plug 44 having a square cross section is provided on the other end side of the cleaning fabric take-up shaft 40, and the fixed plug 44 is engaged with a socket having the same cross section of the cleaning fabric take-up shaft portion 42. When the cleaning fabric take-up shaft 40 is attached to the cleaning unit, the movable plug 43 is inserted into the socket of the bearing portion 41, and the other fixed plug 44 is inserted into the shaft portion while applying a force in the direction in which the movable plug 43 is retracted into the shaft. Insert into socket. Thereafter, when the force applied to the cleaning fabric take-up shaft 40 is released or the hand is released, the movable plug 43 protrudes and the engaged state is maintained.
[0025]
The cleaning fabric take-up shaft portion 42 is equipped with a one-way clutch, and the cleaning fabric take-up shaft 40 is rotated by a fixed angle in the direction of the arrow through the one-way clutch when the feed lever 45 swings. The feed lever 45 has a ring-shaped lever fixing portion 46 for fixing to the outer packet member of the one-way clutch. The feed lever 45 is swung in conjunction with the operation of moving the cleaning unit main body closer to the cylinder outer periphery and the operation of moving it away. The cleaning fabric take-up shaft 40 is rotated when the cleaning unit main body is pulled away.
[0026]
The driving device of the cleaning fabric feed mechanism is composed of an air cylinder 50 disposed on the adapter plate 51, and the piston rod 50 </ b> A of the air cylinder 50 is linked to a connecting portion 24 fixed to the rear portion of the side plate 20. The connecting portion 24 is provided with a stopper 25 for finely adjusting the moving amount of the cleaning unit main body. The stopper 25 is a screw type, and the amount of movement of the cleaning unit main body is changed by changing the distance between the stopper receiving portion 52 provided on the air cylinder side and the pressing force of the pressure pad 10 is adjusted.
[0027]
A traveling mechanism for moving the cleaning unit main body has a pair of wheels 26 attached to the front and rear of the side plate 20, and the wheels 26 are caused to travel by the guide portion 53 of the adapter plate 51. The adapter plate 51 is fixed to a fixed frame, for example, a frame of a printing press. The air cylinder 50 of the present embodiment also serves as a power source for each of a cleaning fabric feeding mechanism and a mechanism for moving the cleaning unit to press or separate the cleaning fabric from the cylinder outer peripheral surface. Reference numeral 49 denotes a stay for reinforcement passed between the side plates 20.
[0028]
In FIG. 1, when the cleaning fabric 4 is fed out from the cleaning fabric supply roll 2 set in the slot-shaped guide portion 23, the end of the upward bent portion from the side contacting the back surface of the support bar (the side opposite to the block 14). Then, it is wound around the cleaning fabric take-up shaft 40 along the sleeve 35 fitted into the shaft of the responding member 30 from the outside of the pressure pad 10 from the outside. The cleaning fabric 4 is fed out from the cleaning fabric supply roll 2 by winding the used cleaning fabric on the cleaning fabric winding shaft 40.
[0029]
The cleaning fabric fixed-sizing mechanism has a function of keeping the cleaning fabric feed amount constant even if the cleaning fabric supply roll diameter changes. The fixed dimension feed mechanism links the pin 60 that follows the change of the roll diameter to the feed lever 45 and regulates the swing angle of the feed lever 45 by bringing the pin 60 into contact with the cam surface of the cam body.
[0030]
The feed lever 45 is formed with a long hole facing the axial center, and a pin 60 is passed through the long hole and fixed to a pin block 63 shown in FIG. The pin block 63 is formed with a groove having a width of the feed lever 45. The feed lever 45 is inserted into this groove, the plate 64 is applied to the opposite side of the feed lever, and the plate 64 is pin-blocked so as to sandwich the feed lever 45. Fix to 63. As a result, the pin block 63 can move in the radial direction of the shaft 40 along the feed lever 45. The pin 60 has a roller shaft parallel to the cleaning fabric take-up shaft 40, and a detection roller 65 that abuts on the outer periphery of the roll is rotatably provided on the roller shaft.
[0031]
A manual feed knob 47 for manually operating the cleaning fabric take-up shaft 40 is provided. The manual feed knob 47 is attached to the lever fixing portion 46 of the feed lever. When the manual feed knob 47 is operated in the direction a, the one-way clutch is connected and the take-up shaft 40 rotates in the direction of the arrow to wind up the cleaning fabric 4. .
The feed lever 45 and the pin block 63 are urged in one direction by a spring. The feed lever 45 is urged in a direction opposite to the cleaning fabric winding direction by a spring stretched between the lever fixing portion 46 and the side plate 20. The pin block 63 is responsive to a spring stretched between both sides and the lever fixing portion 46 while the detection roller 65 contacts the outer periphery of the roll toward the center of the winding shaft 40. In the case of manual feed, when the operating force of the manual feed knob 47 is released, it returns to the b direction.
[0032]
The cleaning fabric remaining amount detection mechanism projects the arm shaft 34 of the responding member from the side plate 20, attaches a switch operation cam to the end of the arm shaft, and is pushed by the switch operation cam to change the switch state. 37. In FIG. 1, when the arm 31 comes to the position of the broken line, the switch knob acts on the cam surface, and the switch state changes. Therefore, the remaining amount of the cleaning fabric is detected by the switch state signal at this time.
[0033]
【The invention's effect】
According to the present invention, since the inner bar is divided into three members consisting of the end inner bar and the inner inner bar, a narrow and long tunnel shape formed between the pressure pad deformed into a convex shape and the support bar. It is easy to put individual inner bars in the space.
Further, the operation of fixing the inner inner bar to the support bar strongly tightens the pad mounting portion of the pressure pad to the channel side wall, so that the pressure pad can be firmly attached to the support bar. Thus, when cleaning the cylinder, the pressure pad can be stably pressed against the cylinder surface through the cleaning cloth, the nip width and the nip state are stable, and the pressure pad is provided, for example, for attaching a blanket. Even when the cylinder gap collides with the cylinder gap, the pressure pad does not loosen, and the life of the pressure pad is extended.
[Brief description of the drawings]
FIG. 1 is a side view showing a configuration of one side plate side of a cylinder cleaning apparatus according to the present invention.
FIG. 2 is a rear view of FIG.
FIG. 3 is a plan view of an adapter plate.
FIG. 4 is a plan development view of a cylinder cleaning device.
FIG. 5 is a cross-sectional view of a pressure pad.
FIG. 6 is an explanatory diagram of a pad mounting mechanism.
FIG. 7 is an explanatory diagram showing a procedure for attaching a pressure pad.
[Explanation of symbols]
1 cylinder
2 Cleaning fabric supplier
3 Cleaning fabric supplier support
4 Washing fabric
5 Cleaning fabric advancement
6 Cleaning fabric crimping part
7 Pressing and pulling mechanism
20 Side plate
21 Support bar
23 Slot-shaped guide
26 wheels (traveling part)
30 Response member
50 Air cylinder
213A, 213B end inner bar
215 Middle inner bar
217 End plate.

Claims (8)

A cylinder cleaning device that presses a cleaning fabric supplied from a cleaning fabric supply supported by a cleaning fabric supply support to the outer periphery of the cylinder to clean the outer peripheral surface of the cylinder,
A pressure pad formed of an elastic material and integrally formed with a central portion contacting the back surface of the cleaning fabric and a pad mounting portion facing the end side; and
A support bar that extends in the longitudinal direction of the cylinder and has a channel-shaped portion that is open on the side facing the cylinder, and that locks the pad mounting portion inside the channel;
An inner bar disposed on the inner side of the pressure pad with the pad mounting portion being locked to the support bar, and mounting the pressure pad on the support bar between the channel side walls; Prepared,
The inner bar includes two end inner bars that abut each of the opposing pad mounting portions, and a middle inner bar that applies a clamping force to the channel side wall of the pad mounting portion via the two end inner bars. The inner end bar is fixed to the support bar, and the two end inner bars are moved toward the corresponding channel side walls to press the pad mounting portions against the channel side walls to thereby apply the tightening force. A cylinder cleaning device characterized by being generated.  2. The cylinder cleaning apparatus according to claim 1, wherein the pad mounting portion is formed to project outward, and a groove into which the pad mounting portion is fitted is provided in the channel forming direction on the channel side wall. .  2. The cylinder cleaning device according to claim 1, wherein the pressure pad has a structure in which an elastic restoring force acts in a channel side wall direction when the pressure pad is inserted into the channel of the support bar.  2. The cylinder cleaning device according to claim 1, wherein the pressure pad has a thin central portion and is thick from the central portion to the opposing pad mounting portion.  2. The cylinder cleaning device according to claim 1, wherein the pressure pad is formed in a flat plate shape.  The two end inner bars have a tapered surface on a side opposite to a contact side with each of the opposing pad mounting portions, and the middle inner bar is formed on the tapered surface of the two end inner bars. The opposite inner tapered surface of the inner inner bar slides on the tapered surface of the two inner end bars by the operation of fixing the inner inner bar to the support bar, and the inner end bar moves in the direction of the channel side wall. A cylinder cleaning apparatus, wherein the cylinder cleaning device is moved to generate a clamping force to the channel side wall of the pad mounting portion.  2. The support base according to claim 1, wherein a pedestal portion extending in the longitudinal direction of the cylinder is provided at the center of the channel bottom wall of the support bar, and the end inner bar has an extension portion and a pedestal positioned on the side of the pedestal portion. A cylinder cleaning device, characterized in that a jaw part is provided on the part.  2. The cylinder cleaning according to claim 1, wherein both end portions of the two inner end bars and the inner inner bar are fixed with end plates for connecting the three inner bars after the pressure pads are mounted on the support bar. apparatus.

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