Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F35/00—Cleaning arrangements or devices
  • B41F35/04—Cleaning arrangements or devices for inking rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F35/00—Cleaning arrangements or devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2235/00—Cleaning
  • B41P2235/10—Cleaning characterised by the methods or devices
  • B41P2235/20—Wiping devices
  • B41P2235/24—Wiping devices using rolls of cleaning cloth
  • B41P2235/242—Unwinding the cleaning cloth
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2235/00—Cleaning
  • B41P2235/10—Cleaning characterised by the methods or devices
  • B41P2235/20—Wiping devices
  • B41P2235/24—Wiping devices using rolls of cleaning cloth
  • B41P2235/246—Pressing the cleaning cloth against the cylinder

Definitions

• the present invention relates to an ink supply roller of a printing machine for automatically injecting ink remaining on an ink supply roller into a cleaning cloth or a sheet material and holding the ink.
• the present invention relates to a method and an apparatus for cleaning an ink supply roller, which is excellent in quickness and easy handling of a cleaning work.
• an offset printing press has three cylindrical cylinders, a plate cylinder 51, a blanket cylinder 52, and a press cylinder 53 ; They are arranged in parallel and can contact each other.
• a plate (not shown) made of zinc or aluminum is wound around the plate cylinder 51, and a thin blanket made of rubber or the like is wound around the blanket cylinder 52.
• the printing plate is watered by a dampening device 54 to keep the surface of the printing plate wet except for the text and image layers. 5 5 Oily ink applied-'
• the ink supply device is equipped with an ink supply roller machine for uniformly applying the ink stored in the ink pot 59 to the plate cylinder surface.
• the ink supply roller mechanism includes a metal ink source roller 60 that transfers ink from the ink fountain 5 and an ink inlet roller 61 that receives ink from the ink source roller.
• the metal ink reciprocating ⁇ -La 2 receives the ink from the ink retrieving roller and contacts the ink reciprocating roller, and the ink reciprocating roller passes through the ink kneading roller 63.
• the final stage ink reciprocating roller 64 which receives the ink, and the ink received from the final stage reciprocating roller 64, is applied to the surface of the plate cylinder.
• the ink pot 5 9 is called a metal plate of the number of rafts arranged via elastic rollers. Ink reciprocating roller uniformly spreads the ink on the roller surface. Is applied evenly to the plate cylinder surface.
• the ink supply D-cleaner is washed when changing colors to be printed or when printing is stopped.
• this cleaning first, a gap is provided between the ink setting roller 65 and the plate cylinder surface, and between the ink retrieving roller 61 and the ink reciprocating roller 62 to supply the ink and apply ink to the plate cylinder. After the stop, the operation is performed in a state where the ink supply roller is idling.
• the cleaning of the rollers provided with the ink has been mainly performed by two methods.
• the first cleaning method is that a solvent such as washing oil, for example, white kerosene or linseed oil, is sprinkled on the idle ink supply roller, and the solvent reaches all the rollers and the ink is sufficiently softened.
• Check the ink first remove the ink on the roller with a spatula, and then The ink is wiped off with a cloth, a so-called complete manual operation:
• the second cleaning method uses the manual ink cleaning device b ⁇ shown in Fig. 11. .
• the Lee down key cleaning apparatus 6 6 the support 6 7 which is fixed to the press Sai Dofure over arm, movably and detachably mounted to Lee Nki pan 6 S 3 ⁇ 4 in the direction perpendicular to the roller shaft Then, attach the doctor 69 to the roller side of the ink tray of ⁇ , and make sure that the ink roller comes in contact with the ink 71 on the roller surface with this 1 It is provided to face. Then, when cleaning the roller, set the ink tray 68 into place, and spray the solvent on the surface of the roller in an idling state (no operation until the solvent reaches each ⁇ -la. after, Bruno, by operating the down $ 7 0, to advance the Lee Nki pan doctor 6::.
• the ink 71 on the roller has a property of flowing from the darker to the thinner: at this time, the rollers 71 other than the roller with which the doctor 1 is in contact are used.
• the ink is removed by moving in the direction of the roller.
• the ink collected in the ink tray The waste oil containing the solvent or the like is removed from the support 67 to remove the ink tray.
• the first cleaning method is to remove the ink on the roller surface with a spatula, and then wipe the remaining ink by hand using a cloth soaked with a solvent. It was cleaning. Therefore, when the ink supply roller mechanism is constituted by multi-stage rollers, it takes time to clean all the rollers, and it takes time to clean the hands of the worker.
• the second method of cleaning was that the hands did not directly touch the rollers during the cleaning operation, so there was no longer any need to contaminate the rollers during this operation.
• the waste oil collected in the tray was troublesome to clean up after the waste oil treatment.
• the waste tray is cleaned for the next roller cleaning operation. Cloth and solvent are used for this cleaning, so the worker's hands are stained and the work must be performed every time the mouth is cleaned. Therefore, it is very troublesome for the worker. Hot c
• the cleaning cloth used in conventional blanket cleaning or in the case of hand wiping does not have a large oil absorption capacity, so if these materials are used, a large amount of cloth can be cleaned. Every need.
• 1 m of non-woven fabric was used, with the amount of the solvent used being about 200 cc-times per unit per 1 unit of A-size machine.
• An object of the present invention is to provide a method of cleaning an ink supply roller in which ink remaining on an ink supply roller is automatically soaked in a cleaning cloth or a sheet material and retained, and then this member is discarded. It is an object
• the present invention provides an ink supply port roller cleaning device for a printing press, which can automatically soak the ink remaining on the ink cleaning roller into a cleaning cloth and hold the ink. It is intended to be
• the present invention provides a method of automatically removing the ink extracted by a doctor into a sheet.
• the present invention provides an ink supply roller cleaning device equipped with a means for forcibly holding the ink impregnated in a cleaning cloth or sheet material with the member. It is intended for this purpose.
• DISCLOSURE OF THE INVENTION ⁇ the ink remaining on the ink supply roller for applying ink to the plate cylinder is softened with a solvent, and then the cleaning cloth is pressed against the ink supply roller. Then, the ink is moved continuously, and the softened ink is impregnated and held in the oil absorbing layer of the cleaning cloth, and the cleaning cloth is treated.
• the present invention removes the ink softened by the solvent by intermittently or continuously moving the cleaning cloth by pressing the cleaning cloth against the ink supply roller.
• a cleaning cloth having an oil absorbing layer for retaining the ink soaked therein, and a cloth processing unit for treating the cleaning cloth.
• Cleaning cloth sent to the processing unit either cut by mosquitoes Tsu coater, by a saw c This discarding processing for each roll from taking wind-fixed length in Certificates preparative roll, used wash - cloth It can be easily discarded, improving workability.
• a cleaning cloth supply roller for winding the cleaning cloth, a tension roll for extracting the cleaning cloth from the cleaning cloth supply roll, and a cleaning cloth supply roller are disposed between the two rolls. The pressure contact is pressed against the surface.
• the cleaning cloth has a two-layer structure of an oil-absorbing layer and an oil-impermeable layer, or a three-layer structure of an oil-permeable layer, a non-backflow oil-permeable layer, an oil-absorbing layer, and an oil-impermeable layer. Therefore, the softened ink has good absorbency and only the absorbed ink leaks out. Especially, in the case of non-refluxed oil permeable debris, the absorbed ink is completely absorbed by the absorption layer. It is excellent in handling because it is kept at
• the two-layer cleaning cloth has an oil absorbing layer impregnated or mixed with an oil coagulant.
• the absorbed ink is solidified or gelatinized by cooling after heating, and the subsequent treatment of the cleaning cloth is simplified.
• the ink softened by the solvent is removed by intermittently or continuously moving the cleaning cloth by pressing the cleaning cloth against the ink supply roller, and the solvent is softened by the solvent.
• a long or sheet-like cleaning cloth having an oil absorbing layer containing an oil coagulant in the oil absorbing layer, and dissolving the oil coagulant;
• a ripening section for mixing the oil coagulant and the ink impregnated with the ink, and a cloth processing section for processing the cleaning cloth in which the ink is held in the oil absorbing layer by cooling after ripening. ing.
• the present invention provides an ink tray provided with a doctor on the ink supply roller side, and an ink which is spread on the ink tray and which is softened by the solvent removed by the doctor and impregnated.
• a sheet-like cleaning cloth having an oil-absorbing layer for holding the oil-absorbing layer containing an oil-coagulant, softening the oil-coagulant, and dissolving the dissolved oil-coagulant, the solvent and the ink; And It consists of a maturation part.
• FIG. 1 is a schematic view of an ink supply roller cleaning device for an ink by a cleaning cloth system according to a first embodiment of the present invention
• FIG. 2 is a cleaning cloth in which an oil absorbing layer contains an oil coagulant.
• Fig. 3 is a cross-sectional view of a washing cloth coated with an oil-absorbing layer with an oil-absorbing layer
• Fig. 4 is a side view of an automatic cloth cutting device
• Fig. 5 is a plan view of Fig. 4.
• FIG. 6 is a diagram for explaining the cloth processing by the take-up / droplet
• FIG. 7 is a schematic diagram of an ink supply roller cleaning device provided with a heating means according to the second embodiment of the present invention.
• FIG. 9 is a schematic configuration diagram of an offset printing press for explaining the ink supply device.
• FIG. 10 is a schematic view of a conventional ink supply roller cleaning device.
• FIG. 1 is a schematic view of a cleaning cloth type ink supply port cleaning apparatus showing a first embodiment of the present invention.
• the ink supply roller cleaning device is made of a metal material that glares the ink supply ⁇ -la machine shown in FIG. i reciprocating roller (hereinafter referred to as ink supply ⁇ -roller).
• the cloth supply roll 1 and the tension roller 2 are parallel to the axis of the ink supply ⁇ -roller.
• the cleaning cloth 4 wound around the cloth supply roll is given a predetermined tension by a tension roller 2.
• the pulling roller 2 is formed by a pair of opposing rollers 2a and 2b.
• the roller 2a is on the driving side, and the other roller 2b is on the driven side.
• the cloth is rotated intermittently or continuously, and the cleaning is performed intermittently for a long time during cleaning, or intermittently drawn out, or between the cloth supply roll 1 and the pulling roller 2,
• a cleaning cloth pressing mechanism 6 including a pressing pad ba made of an elastic member for pressing the cleaning cloth against the ink supply roller is provided.
• the cleaning pressure welding mechanism is provided with a drive device (not shown) for advancing or retreating the pressure 6a in the direction of the ink supply roller R g (arrow).
• a cloth processing unit 8 for processing the cleaning cloth is provided on the outlet side of the pulling roller 2.
• FIG. 2 shows a first embodiment of the cleaning cloth, in which an oil absorbing layer 10 made of a material having a good ink absorbency in contact with the ink supply roller R, and the oil absorbing layer And an oil-impermeable layer 12 covering the portion of the layer except for the surface where the ink supply roller contacts.
• the oil-absorbing layer 10 is formed of a non-woven cloth having a thickness of 3 to 5 nm and made of polypropylene fiber.
• the oil impervious layer is formed of a 10- to 30-micron thick poly-propylene with “plus hands./kulum.”
• the oil impervious layer 1 2 is wound so as to enclose a part 14 of the oil absorption layer, and the wound oil impermeable layer is formed.] 6 is an oil impregnated in the oil absorption layer.
• the cleaning cloth usually requires about 200 cc of solvent for one roller cleaning, so it must be able to absorb all of the solvent. It is also necessary to use a small amount (for example, about 10 cm) of cleaning cloth to absorb the amount of solvent used.
• the washing 713 is made of a material having a good oil absorbency, and the oil in the oil absorbable layer is solidified or turned into a solid by cooling after ripening.
• Oil coagulant 18 eg, trade name “Oyatsutsu” manufactured by Lion Co., Ltd. impregnated or made into microcassels.
• Fig. 3 shows a second embodiment of the cleaning cloth.
• the cleaning cloth permeates the waste oil containing ink and solvent from the ink supply roller side and does not permeate in the reverse direction. It has a three-layer structure including a layer 20, an oil absorbing layer 22 for absorbing waste oil that has passed through the oil permeable layer, and an oil impermeable layer 24 for preventing waste oil from leaking from the oil absorbing layer. Since the oil-absorbing layer 22 completely covers the oil-permeable layer 20 with the oil-impermeable layer 24, the waste oil that has infiltrated the oil reservoir will not flow out again. 5 .
• FIG. 1 shows the structure of a cloth treatment in which a cleaning cloth 4 is cut off by a cutter 3 and discarded, and a force cutter receiving plate 5 is provided at an outlet side of the pulling roller 2.
• Fig. 4 shows that the cutter 3 is turned into a power drive.
• the cleaning cloth 4 is moved along the receiving plate 5 and the cleaning cloth 4 is automatically cut.
• the cutter drive 7 has a guide shaft 9 parallel to the pulling roller ⁇ and a force / tar mount 11 supported by a ';', and the two-stroke mount penetrates in the same direction as the guide shaft.
• Female screw 13 is formed.
• the external thread of the motor mounting base is screwed with a feed screw> 15.
• the feed screw is reversibly rotated by a motor (not shown) attached to a side frame constituting the cleaning device main unit *, and moves the cutter mounting base in the direction of the arrow shown in FIG.
• the force / tar drive unit 7 is started after the tension roller 2 is stopped and the drawing of the cleaning cloth is stopped, and the cutting operation of the cleaning cloth by the force / tar 3 is started.
• FIG. 6 shows a cloth processing unit constituted by a take-up roll 17.
• a take-up roll 17 winds the cleaning cloth 4 in synchronization with a cleaning operation by a driving device (not shown), or continuously, and a fixed amount of used cloth is taken up by the take-up roll.
• a driving device not shown
• a fixed amount of used cloth is taken up by the take-up roll.
• FIG. 7 is a schematic diagram of an ink supply roller cleaning device equipped with a heating means for solidifying or gelatinizing waste oil soaked in the cleaning cloth.
• a heating unit 3 is arranged between the pressing pad 6a and the cloth processing unit 8, and the ripening unit is provided with a heater 30 in a case 28 made of a heat insulating material.
• the top surface is covered with a heat-resistant shochu oil-based sheet 32, such as Teflon, and a ⁇
• the cleaning cloth 4 that has passed through the heating section 26 enters the cloth processing section 8') and is processed for disposal.
• the cloth processing section is constituted by the cloth cutting device described above : 7 ⁇ volume ⁇ -; 17.
• '' Next, the operation of the ripening section will be described.
• the oil softened by the solvent enters the ripening section while being soaked in the oil absorbing layer of the cleaning cloth.
• the ripening section heats the washing cloth through the child noflon and dissolves the coagulant in the oil absorbing layer of the washing cloth.
• the ripening temperature at this time is about 100 degrees.
• FIG. 8 is a doctor one blade using cleaning cloth It is a schematic diagram of the ink supply roller cleaning device by the method.
• a support base 36 is provided on a base (not shown) attached to the frame of the printing press main body so as to be able to advance and retreat in the radial direction of the ink supply roller, and the ink receiver 3 is provided on the support base. Wear 8! ), The support is advanced by a driving device (not shown) in the direction of the ink supply port to perform the cleaning operation.
• the ink tray 38 is formed by a bottom plate 40, both side plates 42 inclined in the direction of ink supply ⁇ -la, and side plates 44 located opposite to the ink supply roller side.
• the enclosed part is an oil pan 46, and this oil pan is equipped with a doctor 48 on the bottom plate on the common supply D-ra side.
• a heater 50 for heating the entire rear surface is provided on the back of the heater, and a heater 52 for ripening from the upper surface of the cleaning cloth, for example, an infrared heater is provided above the oil receiver.
• a sheet-like cleaning cloth 54 with an oil-absorbing layer containing an oil coagulant is laid.
• This sheet-like cleaning cloth has one side of the side plate of the ink sink 4 4 It is fixed by the clamp 56 provided on the other side, and the other side is folded back to the back side around the doctor's tip so as to enclose the doctor 48. Received to be attached to the dish.
• the ink that has been softened by the solvent is brought into contact with the doctor by the doctor. In this process, it flows into the cleaning cloth 54 laid on the bottom plate.
• the thickness and size of the sheet-like cleaning cloth are set so that the solvent used for one cleaning is soaked. Therefore, the ink flowing down along the slope of the bottom plate is absorbed by the cleaning cloth without being accumulated in the oil receiver.
• the cleaning cloth is subjected to processing such as solidification of ink, etc .: That is, when the heater is turned on after the support base is retracted, the cleaning cloth is added. As a result, the oil coagulant dissolves and mixes with the ink. From this state, heater communication! When: is cut off, the washing cloth is air-cooled, and the ink is solidified or gelatinized by the oil coagulant. Then, the clamp 56 is released (two-dot chain line), and the cleaning cloth is removed from the ink tray and discarded. At this time, the portion of the cleaning cloth that has been clamped is not dirty, so that holding the portion can perform the processing without soiling the hands.
• the heaters are arranged on the back surface of the bottom plate and above the cleaning cloth.
• this requirement is not necessarily required, and only one of them can be selected if necessary.
• the contact portion with the ink supply port roller which is the front part of the pressure pad, is formed with a width in the circumferential direction of the ink supply roller. Since the front surface of the contact portion has a concave shape with a curvature substantially equal to the curvature of the ink supply roller, the contact area of the cleaning cloth with the ink supply roller is increased, and the wiping effect is improved.
• the ink supply roller cleaning method and apparatus according to the present invention are useful for removing the ink remaining on the ink supply roller that applies ink to the plate cylinder. It is suitable for improving the handling of used cleaning cloth.

Landscapes

• Inking, Control Or Cleaning Of Printing Machines (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=12457947

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (32)

Citations (3)

Family Cites Families (13)

• 1989
  • 1989-02-17 JP JP1036016A patent/JPH02215533A/ja active Granted
• 1990
  • 1990-02-16 US US08/071,034 patent/US5367955A/en not_active Expired - Fee Related
  • 1990-02-16 DE DE69021805T patent/DE69021805T2/de not_active Expired - Fee Related
  • 1990-02-16 KR KR1019900701343A patent/KR0157037B1/ko not_active Expired - Fee Related
  • 1990-02-16 WO PCT/JP1990/000191 patent/WO1990009283A1/ja not_active Ceased
  • 1990-02-16 EP EP90903221A patent/EP0414909B1/en not_active Expired - Lifetime

Patent Citations (3)

Also Published As

Similar Documents

Legal Events