JPH0585637U - Roller cleaning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To make a blade-shaped pressing member for rubbing a roller difficult to be soiled and to easily remove soil in a waste liquid receiver. [Structure] A portion of the wiping sheet 13 extending from the feeding roller 17 to the winding roller 18 is pressed against the surface of the roller 3 by a blade-shaped pressing member 12. The cleaning liquid is attached to the surface of the roller 3, and the wiping sheet 13 scrapes off the cleaning liquid and the ink residue. The cleaning liquid does not adhere to the pressing member due to the interposition of the wiping sheet. Further, a receiver 53 for receiving the waste liquid of the cleaning liquid is installed below the winding roller, and a covering member 55 is detachably attached to the inner surface thereof. Therefore, the dirt in the receiver can be easily removed by peeling off the covering member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for various rollers such as an ink roller and an impression cylinder in a printing machine.

[0002]

[Prior Art]

 The inking unit of the printing machine needs to be cleaned to remove stains or change colors. Since this cleaning is troublesome and dangerous, it has been conventionally performed by an automatic cleaning device.

Examples of this automatic cleaning device include those described in Japanese Patent Publication Nos. 55-6066 and 56-3195. In these devices, the cleaning liquid is sprayed toward the upper ink roller of the inking device, and the doctor blade is pressed against the lower ink roller to scrape the cleaning liquid. In addition, a brush is provided inside the case surrounding the doctor blade, and when the tip of the doctor blade returns from the outside of the case to the inside after cleaning, the tip is rubbed with a brush to automatically remove ink residue and the like adhering to it. It is like this.

For the same reason, the impression cylinder of a printing machine tends to be washed by an automatic washing machine.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional cleaning device, stains such as ink dregs adhere to and accumulate on the brush, so that the wiping effect of the doctor blade is reduced.

[0006] Furthermore, the ink splattered by the brush or the waste liquid flowing along the doctor blade adheres to the inner surface of the case to stain the case, which is troublesome to clean.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a continuous wiping sheet for wiping off the surface of a predetermined roller to which a cleaning liquid is attached, a feeding roller for feeding the wiping sheet, and a winding roller for winding the wiping sheet. A roller cleaning device including a take-up roller, a blade-shaped pressing member that presses a wiping sheet between the feeding roller and the take-up roller against the surface of the roller, and a receiver for the waste liquid of the cleaning liquid. The configuration of is adopted.

Further, the present invention is a roller cleaning device including a covering member detachably attached to an inner surface of the waste liquid receiver.

[0009]

[Action]

 When cleaning the roller, the blade-shaped pressing member projects toward the surface of the roller, and presses the wiping sheet against the surface of the roller.

The cleaning liquid is previously supplied to the surface of the roller, and the wiping sheet pressed by the pressing member wipes dirt such as ink residue from the surface of the roller together with the cleaning liquid. At that time, since the pressing member does not directly touch the roller, ink residue or the like does not adhere. In addition, the ink residue and the like will not be scattered behind the wiping sheet.

The cleaning liquid is adsorbed as a waste liquid on the wiping sheet and wound on a winding roller together with the sheet, or drops along the roller or the like into the receiver. Waste liquid and the like are collected in the receiver and removed from there. In addition, the dirty wipe sheet will be discarded while being wound up.

Although the inside of the receiver is contaminated by contact with waste liquid or the like, the dirt can be easily removed from the inside of the receiver by peeling off the covering member from the inner surface of the receiver.

[0013]

Embodiment An embodiment of a cleaning device for an ink roller will be described below with reference to the drawings.

As shown in FIG. 7, the ink roller cleaning device 1 faces a predetermined ink roller 3 of the inking device 2, and the left and right sides of the inking roller 3 are left and right frames (not shown) of the printing machine. Supported by.

Further, a cleaning liquid supply pipe 4 is arranged above the inking unit 2 in parallel with the center axis of the upper ink roller 5. Injection nozzles 6 for the cleaning liquid are arranged in the supply pipe 4 at a predetermined pitch so as to face the surface of the ink roller 5. When cleaning the inking device 2, all the rollers of the inking device 2 rotate with the inking roller 7 being separated from the surface of the plate cylinder 8, and the cleaning liquid is sprayed from the nozzle 6 toward the surface of the upper inking roller 5. To be done. As the cleaning liquid rotates, the cleaning liquid flows along the surface of the rollers and flows from the top to the bottom and from the bottom to the top. The installation position of the injection nozzle 6 is not limited to the above, and for example, the injection nozzle 6 may be installed in two or more places, and one of them may be installed in the vicinity of the cleaning device 1. ..

The inking roller 3 facing the cleaning device 1 is a roller located at a relatively lower position in the inking device 2, is made of metal, and is a rocking roller that rocks along its central axis. The ink roller on which the cleaning device 1 is to be arranged may be another ink roller.

As shown in FIGS. 1, 2, 4 and 5, the cleaning device 1 has a housing 9 extending along the central axis of the ink roller 3. The housing 9 is opposed to the left and right sides of the ink roller 3 and is provided with standing walls 9a and 9b along the inner surfaces of the left and right frames of the printing machine, and an upper wall that connects the upper portions of the standing walls 9a and 9b to each other. Part 9c. As shown in FIG. 4, an arm 10 extending to the frame side of the printing machine is attached to both the standing wall portions 9a and 9b, and the arm 10 is connected to a bracket 11 on the frame side of the printing machine. There is. As a result, the cleaning device 1 is supported by the frame of the printing machine.

As shown in FIGS. 1 to 3, a blade-shaped pressing member 12 is housed in the housing 9. The pressing member 12 is for pressing a wiping sheet 13 described below against the surface of the ink roller 3, and is made of hard rubber, synthetic resin, metal such as stainless steel, aluminum, etc. It has a plate shape. The tip of the blade-shaped pressing member 12 is chamfered, or it is desirable that the tip has a rounded shape. Alternatively, it may have an acute angle or an acute angle. The blade-shaped pressing member 12 has a suitable thickness of, for example, about 1 mm to 10 mm, and the tip has the same thickness or about 0.2 mm to 8 mm. , But is not limited to this.

The pressing member 12 extends along the central axis of the ink roller 3 and is detachably attached to the support member 14. Both side portions 14a of the support member 14 laterally pass through the guide grooves 15 formed in the standing wall portions 9a and 9b of the housing 9 and a gap between the standing wall portions 9a and 9b and the printing machine frame. It has reached inside. The guide groove 15 is inclined slightly downward from the horizontal, so that when the support member 14 moves along the guide groove 15, the pressing member 12 presses the wiping sheet 13 diagonally downward on the surface of the ink roller 3. Become.

As shown in FIGS. 1 and 3, a piston rod 16a of an air cylinder 16 is connected to both side portions 14a of the support member 14 which project outward from the guide groove 15. The air cylinder 16 is fixed to the upstanding walls 9a and 9b of the housing 9. The operation of the air cylinder 16 causes the pressing member 12 to project from the solid line position to the position indicated by the alternate long and two short dashes line to press the wiping sheet 13 against the surface of the ink roller 3, as shown in FIGS. Become.

In the housing 9, a feeding roller 17 and a take-up roller 18 of the wiping sheet 13 are installed so as to sandwich the pressing member 12 from above and below. The wiping sheet 13 is a sheet that can wipe off dirt on the surface of the ink roller 3 and absorb the cleaning liquid, and is continuous, and is made of, for example, a nonwoven fabric.

As shown in FIGS. 4 and 5, the pay-out roller 17 is formed by winding a new wiping sheet 13 around a tubular shaft 19, and the spline shafts 20 a and 20 b are engaged with both ends of the tubular shaft 19. Cylinders 21a and 21b having grooves for fixing are fixed. Spline shafts 20a, 20b are attached to both upstanding walls 9a, 9b of the housing 9 so as to correspond to the cylinders 21a, 21b on both sides of the cylinder shaft 19, respectively. By engaging the spline shafts 20a and 20b with the cylindrical bodies 21a and 21b, the feeding roller 17 is suspended between the upstanding walls 9a and 9b of the housing 9. The spline shafts 20a and 20b are engaged with support cylinders 22a and 22b having grooves that mesh with the spline shafts 20a and 20b, and the support cylinders 22a and 22b are supported by the upstanding walls 9a and 9b via bushes 23. As a result, the feeding roller 17 is connected to the support cylinders 22a and 22b via the spline shafts 20a and 20b and is rotatable with the support cylinders 22a and 22b. The spline shafts 20a, 20b are supported by pins 24 and compression coil springs 25 so as to be retractable on the support cylinders 22a, 22b side. Therefore, in order to take out the delivery roller 17 from the housing 9, the rear end of the pin 24 is held and pulled outward, and the spline shafts 20a and 20b are drawn into the support cylinders 22a and 22b to move the spline shafts 20a and 20b into the cylinder 21a. , 21b. On the contrary, in order to load the feeding roller 17 into the housing 9, the spline shafts 20a and 20b are retracted into the support cylinders 22a and 22b in the same manner as described above, and the cylinders 21a and 21b are moved to the support cylinder 22a and 22b. After matching with 22b, the spline shafts 20a, 20b may be released to project into the cylinders 21a, 21b.

As shown in FIGS. 4 and 5, the winding roller 18 is for winding the wiping sheet 13 fed from the feeding roller 17, and is a tube for winding the wiping sheet 13. It has a shaft 26. A slit 27 parallel to the central axis of the cylindrical shaft 26 is formed, and the starting end of the wiping sheet 13 is hooked on the slit 27. Since the slit 27 is seen through one end of the cylinder shaft 26, a ring 28 is fitted in the shaft end so as to obtain the rigidity of the cylinder shaft 26.

A cylinder 30 having a groove that engages with the spline shaft 29 is fixed to one end of the cylinder shaft 26. A spline shaft 29 is attached to one standing wall 9a of the housing 9 corresponding to the cylindrical body 30. The spline shaft 29 is supported by the upright wall 9a via the support cylinder 31, the bush 32, and the like, as in the feeding roller 17. A driven side flange 33 having a claw of a dog clutch is fixed to the other end of the cylinder shaft 26. A driving side flange 34 having a claw that meshes with the claw is attached to the other standing wall 9b of the housing 9 corresponding to the driven side flange 33.

Thus, in order to take out the take-up roller 18 from the housing 9, the rear end of the pin 35 is pulled and pulled outward, the spline shaft 29 is drawn into the support cylinder 31, and the spline shaft 29 is removed from the cylinder shaft 26. It suffices to disengage and disengage the claws of the flanges 33 and 34 of the meshing clutch. Conversely, in order to load the take-up roller 18 into the housing 9, the spline shaft 29 is retracted into the support cylinder 31 in the same manner as described above, the cylinder shaft 26 is aligned with the support cylinder 31, and the claws of the dog clutch are engaged with each other. After engaging, the spline shaft 29 may be released, and the spline shaft 29 may be released into the cylindrical body 30 of the cylindrical shaft 26.

The driving force for feeding the feeding roller 17 and the driving force for winding the winding roller 18 are obtained by the reciprocating movement of the pressing member 12. That is, the shaft 36 supporting the driving side flange 34 is supported by the standing wall 9b via the one-way clutch 37 and the bush 38. The one-way clutch 37 penetrates the upright wall 9b outward together with the shaft 36 of the driving side flange 34, and the spur gear 39 is fixed to the outer ring of the one-way clutch 37 protruding therefrom. As shown in FIG. 1, the one-way clutch 37 connects the spur gear 39 to the take-up roller 18 when the spur gear 39 rotates in the direction of arrow A, that is, in the direction of winding the wiping sheet 13. However, when the spur gear 39 rotates in the direction of arrow B, the spur gear 39 and the winding roller 18 are disengaged.

A sector gear 40 that meshes with the spur gear 39 is attached to the standing wall 9b via a pin 41. A tension coil spring 42 is provided between the sector gear 40 and the piston rod 16a for driving the pressing member 12 so that the sector gear 40 can be rotated in the arrow A direction when the piston rod 16a retracts. Are connected by. Further, the tension coil spring 42 is covered with a pipe 43 so as to rotate the sector gear 40 in the arrow B direction when the piston rod 16a projects. The pipe 43 has a length equal to the length of the tension coil spring 42 when there is no load, and both ends thereof are in contact with pins 44 and 45 for supporting the tension coil spring 42.

As shown in FIGS. 5 and 6, V-shaped grooves 46 and 47 are formed in each of the support cylinders 22 a and 31 of the feeding roller 17 and the take-up roller 18, and the V-shaped grooves 46 are formed. Circular belts 48 and 49 are hung on and 47, respectively. The round belts 48, 49 are pulled by the tension coil springs 51, 52 toward the bracket 50 protruding from the standing wall 9a. Therefore, the feeding roller 17 and the take-up roller 18 are constantly braked, and the rollers 17 and 18 are prevented from unintentionally rotating.

When the air cylinder 16 is actuated and the pressing member 12 projects from the solid line position to the position indicated by the chain double-dashed line as shown in FIGS. 1 and 2, the sector gear is pressed by the pressing force via the pipe 43. 40 and the spur gear 39 rotate in the arrow B direction. In this direction, the one-way clutch 37 is disengaged, so the take-up roller 18 does not rotate. On the other hand, since the pressing member 12 projects obliquely downward, the wiping sheet 13 between the feeding roller 17 and the winding roller 18 is pulled downward. Therefore, the wiping sheet 13 is fed from the feeding roller 17, and the fresh wiping sheet 13 comes into contact with the surface of the ink roller 3. In the case of this embodiment, the stroke of the air cylinder 16 is about 15 mm, and the wiping sheet 13 having a length substantially equal to the stroke is pulled out from the feeding roller 17.

When the piston rod 16 a and the pressing member 12 return to the original position shown by the solid line, the sector gear 40 and the spur gear 39 rotate in the arrow A direction by the tensile force via the tension coil spring 42. Since the one-way clutch 37 enters in this direction, the take-up roller 18 rotates in the direction of arrow A, and the wiping sheet 13 is taken up by the same length as the unwound sheet.

During the cleaning of the ink roller, the cleaning liquid sprayed from the spray nozzle 6 flows down along the wiping sheet 13 and the like. In order to receive the waste liquid of the cleaning liquid, as shown in FIG. 2, a container-like receiver 53 is installed below the winding roller 18. As shown in FIGS. 4 and 5, the receiver 53 is supported on the lower portions of the upstanding walls 9a and 9b of the housing 9 via a support member 54.

A covering member 55 is detachably attached to the inner surface of the receiver 53. The covering member 55 is formed by adhering the synthetic resin film having solvent resistance along the inner surface of the receiving member. Alternatively, it is formed of a synthetic resin molded product that is pre-molded in the same shape as the inner surface of the receiver 53.

Therefore, the waste liquid generated by cleaning the ink roller 3 does not adhere to the inner surface of the receiver 53, and the cleaning of the inner surface of the receiver 53 can be completed only by peeling the covering member 55 from the receiver 53 after the cleaning is completed.

Next, a series of operations of the cleaning device will be described. At the time of cleaning the inking device 2, the inking roller 7 is separated from the plate cylinder 8 and the cleaning liquid is ejected from the cleaning liquid ejecting nozzle 6 toward the ink roller 5. At that time, the respective ink rollers 3, 5, 7 etc. are rotating and the cleaning liquid flows as a film along the surface of all the ink rollers.

Next, the pressing member 12 is projected toward the ink roller 3 by the operation of the air cylinder 16, and the wiping sheet 13 is pulled out from the feeding roller 17 and pressed against the surface of the ink roller 3.

As a result, the surface of the ink roller 3 is rubbed by the wiping sheet 13, and the ink slag and the waste liquid of the cleaning liquid are scraped off. The cleaning liquid or the like on the surface of another ink roller is wiped off when it reaches the ink roller 3. Further, the excess waste liquid is received in the receiver 53 and then discarded. The inside of the receiver 53 is cleaned by peeling the covering member 55 from the inner surface of the receiver 53.

When the cleaning is completed, the air cylinder 16 returns to its original state and the pressing member 12 separates from the surface of the ink roller 3. Along with this, the winding roller 18 rotates in the direction of arrow A, and the dirty wiping sheet 13 is wound up. The wiping sheet 13 is separated from the surface of the ink roller 3 and comes into contact with the pressing member 12 to stop.

The cleaning device can also be applied to cleaning the impression cylinder of a printing machine.

[0039]

[Effect of the device]

 Since the present invention has the above-mentioned structure, the wiper sheet can be pressed against the surface of the roller such as the ink roller by the pressing member to wipe off the dirt such as the ink residue together with the cleaning liquid. Therefore, since it is possible to prevent the ink dregs and the like from adhering to the wiping sheet to be removed and from adhering and depositing to the pressing member, it is possible to enhance the cleaning effect. Further, since the scattering of waste liquid and the like to the rear can be blocked by the wiping sheet, it is possible to prevent the cleaning device from being contaminated.

Further, since the dirt inside the receiver can be removed by peeling it off from the inner surface of the receiver, the inside of the receiver can be cleaned easily and quickly.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of an ink roller cleaning device according to the present invention.

FIG. 2 is a cross section of a central portion of the cleaning device.

FIG. 3 is a partially cutaway plan view showing a pressing member and its supporting member.

FIG. 4 is a cross-sectional view of one side portion of the cleaning device.

FIG. 5 is a cross-sectional view of another one side portion of the cleaning device.

FIG. 6 is a partially cutaway cross-sectional view showing a brake device for a feeding roll and a winding roll.

FIG. 7 is a schematic side view of an inking device provided with the cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cleaning device 2 ... Ink device 3 ... Ink roller 6 ... Cleaning liquid injection nozzle 12 ... Pressing member 13 ... Wiping sheet 17 ... Delivery roller 18 ... Winding roller 53 ... Waste liquid receiving 55 ... Covering member

Claims (2)

[Scope of utility model registration request] 1. A continuous wiping sheet for wiping off the surface of a predetermined roller to which a cleaning liquid is attached, a feeding roller for feeding the wiping sheet, a winding roller for winding the wiping sheet, and the feeding roller. A blade-shaped pressing member that presses the wiping sheet between the roller and the winding roller against the surface of the roller,
A roller cleaning device comprising a waste liquid receiving the cleaning liquid. 2. The roller cleaning device according to claim 1, further comprising a covering member that is detachably attached to the inner surface of the waste liquid receiver.