JP6316657B2 - Ink washing table for digital printing machine - Google Patents

Description

  The present invention relates to an ink washing stand for a digital printing machine, and more particularly, an ink for a digital printing machine for washing ink adhering to an ink tank and a sensor section of a digital printing machine by circulating imaging oil through the ink washing stand. It relates to a washing table.

  The digital printing machine is a printing apparatus in which a plate making mechanism and a printing mechanism are integrated, and plate making and printing can be performed by the same printing machine.

  For example, in HP Indigo press 3000, 5000, 7000 and WS4000, WS6000 series digital printing presses of Hewlett-Packard (HP), units used for a plurality of image forming processes arranged around a photo imaging plate (PIP) ( BID) is provided with an ink tank containing a plurality of different color inks, and printing is performed by supplying ink from the ink tank to the drum of the PIP unit from the BID and adhering to it while the photo imaging plate is rotating. .

  The ink density in the ink tank is detected by a sensor provided in the ink tank, and the ink density is adjusted by imaging oil. In addition, the ink tank and the sensor were periodically removed from the BID, and washed manually with the ink tank and sensor cleaning liquid on the floor near the digital printing machine.

Special table 2007-510185 gazette

  However, when cleaning the ink tank and sensor of this type of conventional digital printing machine, the ink tank and sensor removed from the BID are placed on the floor of the workplace near the digital printing machine with a suitable sheet. A bucket was placed and placed in it, and an operator used a cleaning tool such as a brush to manually drop the imaging oil onto the surface of the ink tank and the sensor to wash the ink adhering thereto.

  However, in such a manual operation by an operator, for example, it takes a long time of about 20 minutes to clean one set of ink tanks, and the imaging oil can be used only once, and a large amount (16 to 20 liters) can be used. ) To deteriorate the working environment and cause a fire.

Therefore, in order to solve the above-mentioned problems, the ink washing stand for the digital printing machine of the present invention is provided with a washing liquid reservoir at one end of the short side of the rectangular washing tank in plan view, and directed toward the washing liquid reservoir. A bottom surface of the cleaning tank inclined at a predetermined angle extends from the other end of the short side of the cleaning tank, and the cleaning liquid flowing down from the bottom surface of the cleaning tank is configured to be stored in the cleaning liquid reservoir, and the bottom surface of the cleaning tank The predetermined inclination angle of the portion is in the range of 2 degrees to 4 degrees.

  Further, in the ink washing stand for a digital printing machine of the present invention, a filter is provided at the outflow end of the washing tank in the longitudinal direction of the washing tank, and the washing liquid in the washing liquid reservoir is disposed downstream of the filter with a washing liquid suction pipe. In addition, an electric pump for suction is provided, and a clean cleaning liquid primarily filtered by the filter is circulated to the cleaning tank through a cleaning liquid supply pipe.

  Furthermore, a filter is further provided on the downstream side of the electric pump, and the cleaning liquid is subjected to secondary filtration in addition to the primary filtration of the cleaning liquid.

Further, the cleaning liquid is imaging oil.
In the ink washing stand for the digital printing machine of the present invention, a clean cleaning liquid is discharged and circulated to the cleaning tank by a cleaning brush attached to the tip of the cleaning liquid supply pipe via the cleaning liquid supply pipe, and further, The feature is that the amount used can be reduced.

  Legs are provided vertically at the four corners of the bottom surface of the cleaning tank, and casters are provided at the lower ends of the legs.

  The cleaning time of the ink tank and the sensor is greatly shortened, and the cleaning liquid is not diffused to the work place and can be cleaned and used repeatedly, so that the work environment is improved and there is no possibility of fire.

It is a partially broken front view of the ink washing stand for digital printing machines of the present invention. It is a side view of the ink washing stand for digital printing machines of this invention shown in FIG. It is a front view of the upper filter provided in the ink washing stand for digital printing machines of this invention shown in FIG. It is a perspective view of the washing | cleaning part of the ink washing stand for digital printing machines of this invention shown in FIG. It is a circulation circuit diagram of the washing | cleaning liquid of the ink washing stand for digital printing machines of this invention shown in FIG.

  Embodiments of an ink washing stand for a digital printing machine according to the present invention will be described below with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the ink washing stand 1 for a digital printing machine according to the present invention is suitable for the ink used for printing, which is used as the washing liquid L, and inexpensive imaging oil in the ink washing stand 1. A liquid reservoir 2a (which can store about 9 liters of imaging oil) is provided at the end of the cleaning liquid in the width direction in the short side direction of the cleaning tank 2 which is circulated and stored. Then, a rectangular shape in a plan view provided by extending the cleaning tank bottom surface portion 2b inclined at a predetermined angle θ, for example, a range of 2 to 4 degrees and an optimum inclination of 3 degrees toward the outflow end. A cleaning tank 2 is configured.

  Moreover, the upper lid 3 attached to one end of the side surface in the longitudinal direction of the cleaning tank 2 through a connecting pin 4 and a safety plate 5 so as to be rotatable and openable, and the cleaning tank 2 is movably mounted on the floor surface 4. Legs 8 are provided at the four corners of the bottom surface of the cleaning tank 2 in a direction perpendicular to the floor of the book.

  Here, the cleaning tank 2 is configured to be movable on the floor surface of the work place by a caster 9 rotatably provided at the lower end of each leg portion 8. Therefore, even if a fire or the like occurs in the workplace, the upper lid 3 is automatically closed by releasing a damper (not shown) by heat. In addition, a drain stopper (not shown) is provided on the bottom surface of the liquid reservoir 2 a so that the cleaning liquid in the liquid reservoir 2 a can be appropriately discharged out of the ink cleaning table 1.

  Further, FIG. 5 is added to FIGS. 1 and 2 described above to describe the configuration of the ink washing stand 1 for the digital printing machine of the present invention. The ink washing stand 1 is immersed in the cleaning liquid L made of imaging oil in the cleaning liquid reservoir 2a. An upper filter (liquid filter) 6 arranged in such a manner is provided on the inner wall facing the outflow end in the longitudinal direction of the cleaning tank 2, and is collected in the cleaning liquid reservoir 2 a by an electric pump 10 provided close to the upper filter 6. The washed liquid L is sucked from the pores (strainers) 6 a of the upper filter 6. Then, the cleaning liquid is primarily filtered by the filtering material built in the upper filter 6, and further the cleaning liquid is further filtered by the filtering material built in the lower filter 7 fixed to the leg portion 8 provided immediately below the cleaning liquid reservoir 2 a. Filter.

  Next, a clean cleaning liquid filtered from the cleaning liquid supply pipe 2c is supplied to the cleaning brush 2d, and the cleaned cleaning liquid (imaging oil) is discharged from the tip of the cleaning brush 2d. The ink adhering to these is removed.

  Here, as shown in FIG. 5, the electric pump 10 rotates the electric motor 11 of the electric pump 10 by closing the power switch 12 provided in the electric circuit of the electric motor 11. Note that a variable speed electric motor may be used as the electric motor 11 to adjust the discharge amount of the cleaning liquid discharged from the cleaning brush 2d.

  Here, as shown in FIG. 3, a plurality of pores (strainers) 6a are formed at the lower end portion of the upper filter 6 facing the cleaning liquid reservoir 2a, and the cleaning liquid used for cleaning stored in the cleaning liquid reservoir 2a. The suction to the upper filter 6 is facilitated.

  As shown in FIG. 4, the cleaning liquid (imaging oil) used for cleaning in the cleaning liquid reservoir 2 a is sucked from the pores 6 a provided in the upper filter 6, filtered, and then connected to the side surface of the upper filter 6. It is sent from the cleaning liquid supply pipe 2c to the lower filter 7 (see FIG. 1), and after filtration, is supplied from the cleaning liquid supply pipe 2c connected to the short side wall of the cleaning tank 2 to the cleaning brush 2d.

  Next, based on FIG. 5 which shows the circulation circuit diagram of the washing liquid of the ink washing stand for the digital printing machine of the present invention, the ink tank of the digital printing machine using the ink washing stand for the digital printing machine of the present invention and the ink tank provided therein are provided. How to clean the sensor will be explained.

  First, the ink tank and sensor removed from the main body of the digital printing machine are placed on the inclined cleaning tank bottom surface 2b of the cleaning tank 2, and a clean cleaning liquid (imaging oil) L is ejected from the cleaning brush 2d. Clean the sensor. Here, the cleaning liquid L used for cleaning flows down the inclined surface of the cleaning tank bottom surface 2 b (optimal inclination angle θ is 3 degrees) by gravity and is stored in the cleaning liquid reservoir 2 a provided at the downstream end of the cleaning tank 2. It is done.

  Next, the used cleaning liquid (imaging oil) L collected at one end in the cleaning liquid reservoir 2a is operated by driving the electric pump 10 by turning on the electric circuit 11 with the power switch 12 closed and turning on the electric circuit, thereby driving the upper filter. 6 is suctioned from the 6 pores (strainer) 6a, primary filtered, and sent to the cleaning liquid suction pipe 2e.

  Thereafter, the primary filtered cleaning liquid (imaging oil) L is sent to the lower filter 7 through the cleaning liquid circulation pipe 13a, subjected to secondary filtration, sent to the cleaning liquid supply pipe 2c through the cleaning liquid circulation pipe 13b, and finally cleaned. The converted cleaning liquid L is discharged into the cleaning tank 2 from the cleaning brush 2d. In the ink washing stand for the digital printing machine of the present invention, the washing liquid L is circulated in this way.

  According to the ink washing stand for the digital printing machine of the present invention configured and functioning as described above, the cleaning liquid (imaging oil) circulates in the ink washing stand 1 by driving the electric pump 10 and is washed. Since the ink is discharged from the brush 2d into the cleaning tank 2, the working efficiency of cleaning the ink tank and the sensor is greatly improved.

  For example, according to the verification test of the present inventor, the working time was reduced from about 20 minutes to about 10 minutes with the ink tank and one sensor set.

  Further, since the cleaning liquid (imaging oil) is primary and secondary filtered by the upper filter and the lower filter and then sent to the cleaning brush 2d to be used for cleaning the ink tank and the sensor, the cleaning liquid (imaging oil) is always clean. As a result, the ink tank and the sensor are cleaned.

  In addition, even if a fire occurs in the workplace, the damper is released by heat and the upper lid 3 of the ink cleaning table 1 is automatically closed, so that the safety of the workplace can be ensured. Further, since the casters 9 are provided at the lower ends of the four leg portions 8 provided on the lower surface of the ink cleaning table 1, the ink cleaning table 1 can be easily moved to a desired place.

DESCRIPTION OF SYMBOLS 1 Ink cleaning stand for digital printing machines 2 Cleaning tank 2a Cleaning liquid reservoir part 2b Cleaning tank bottom part 2c Cleaning liquid supply pipe 2d Cleaning brush 2e Cleaning liquid suction pipe 3 Upper cover 4 Connection pin 5 Safety plate 6 Upper filter 6a Filter hole 7 Lower filter 8 Leg Part 9 Caster 10 Electric pump 11 Electric motor 12 Power switch 13a Cleaning liquid circulation pipe 13b Cleaning liquid circulation pipe θ Inclination angle L at the bottom of the cleaning tank Cleaning liquid

Claims (6)

A cleaning liquid reservoir is provided at one end of the short side of the rectangular cleaning tank in plan view, and a bottom surface of the cleaning tank inclined at a predetermined angle toward the cleaning liquid reservoir extends from the other end of the short side of the cleaning tank. And the cleaning liquid flowing down from the bottom surface of the cleaning tank is stored in the cleaning liquid reservoir, and the predetermined inclination angle of the bottom surface of the cleaning tank is in the range of 2 to 4 degrees. Ink washing stand for digital printing machines. A filter is provided at the outflow end of the cleaning liquid reservoir in the longitudinal direction of the cleaning tank, and an electric pump for sucking the cleaning liquid in the cleaning liquid reservoir through a cleaning liquid suction pipe is provided downstream of the filter. 2. The ink washing stand for a digital printing machine according to claim 1, wherein the filtered cleaning liquid is then circulated to the washing tank through a washing liquid supply pipe.   3. The ink washing stand for a digital printing machine according to claim 2, wherein a filter is further provided on the downstream side of the electric pump to perform the secondary filtration of the washing liquid in addition to the primary filtration of the washing liquid. . The ink washing stand for a digital printing machine according to claim 1, wherein the washing liquid is imaging oil. The clean cleaning liquid is discharged and circulated to the cleaning tank by a cleaning brush attached to the tip of the cleaning liquid supply pipe via the cleaning liquid supply pipe, and the usage amount of the cleaning liquid can be further reduced. Ink washing stand for digital printing machines. The ink washing stand for a digital printing machine according to claim 2, wherein legs are vertically provided at four corners of the bottom of the washing tank, and casters are provided at a lower end of the leg.