JP2005161825A - Ink cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink cleaner capable of efficiently carrying out cleaning operation of residual ink in an ink pot. <P>SOLUTION: A cleaning liquid storing room R is formed inside a storing case 11, and cleaning liquid W is fed into an ink pot of a printer via a cleaning liquid supply route L with a pump 18. Besides, a recovery separating room 52 is provided above the cleaning liquid storing room R. A recovery separation room 52 comes to be in a negative pressure state by an air jetted from an air jet hole 42c of an air jetting nozzle 42. A stained cleaning liquid containing a solid ink is recovered by absorbing into a recovery separating room 52 from inside the ink pot by the negative pressure. The cleaning liquid and the ink are separated with a filter 53. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ink cleaning device used for cleaning residual ink left in an ink fountain provided in an offset printing machine, for example.

  In an offset printing machine, when the ink contained in the ink fountain is changed, for example, for color change, the residual ink in the ink fountain is supplied by the cloth after the operator supplies the cleaning liquid into the ink fountain. It is cleaned and removed.

However, the cleaning operation of the residual ink by hand in the ink fountain is very troublesome and requires time, so that there is a problem that the work efficiency is low.
An object of the present invention is to provide an ink cleaning apparatus that can solve the above-described problems in the prior art and can efficiently clean the residual ink in the ink fountain.

  In order to solve the above-mentioned problems, the invention described in claim 1 includes a tank for storing the cleaning liquid, a cleaning liquid supply mechanism having a supply hose for supplying the cleaning liquid in the tank into the ink fountain, It is provided with a fouling cleaning liquid suction mechanism having a suction hose for sucking the fouling cleaning liquid used for cleaning together with air from the ink fountain, and a recovery mechanism for collecting the fouling cleaning liquid sucked by the fouling cleaning liquid suction mechanism And

  The invention according to claim 2 is summarized in that, in claim 1, the recovery mechanism includes a separation mechanism for removing the solid matter of the ink from the fouling cleaning liquid and returning the cleaning liquid to the tank.

  According to a third aspect of the present invention, in the first or second aspect, the power for operating the fouling cleaning liquid suction mechanism is pressure air supplied from a pressure air generation source, and the suction air flow is based on the principle of spraying. The gist of this is to generate the above.

  A fourth aspect of the present invention is the pump according to any one of the first to third aspects, wherein the cleaning liquid supply mechanism pumps the cleaning liquid from the tank and supplies the cleaning liquid to the supply hose. The gist is that it is configured to be operated by pressure air supplied from a pressure air generation source.

A fifth aspect of the present invention is summarized in that, in the third or fourth aspect, the pressure air generation source is provided in a printing press.
According to a sixth aspect of the present invention, in any one of the first to fifth aspects, cleaning is performed in contact with ink adhering to the inner wall of the ink fountain near the nozzle provided at the tip of the cleaning liquid supply hose. The gist is that an ink removing member is provided.

  The gist of a seventh aspect of the present invention is that, in any one of the first to sixth aspects, a supply hose for the cleaning liquid is inserted inside the suction hose for the dirty cleaning liquid.

  According to the present invention, the cleaning liquid in the tank storing the cleaning liquid is supplied into the ink fountain by the supply hose of the cleaning liquid supply mechanism, and the residual ink is cleaned. Further, the cleaning liquid containing the ink used for cleaning is sucked together with air from the ink fountain by the suction hose of the cleaning liquid suction mechanism. Further, the cleaning liquid and ink sucked by the cleaning liquid suction mechanism are collected by the collection mechanism. Accordingly, it is possible to efficiently clean the ink remaining in the ink fountain.

Hereinafter, an embodiment of an ink cleaning device embodying the present invention will be described with reference to the drawings.
This ink cleaning device is schematically shown in FIG. 1 showing a longitudinal section of the central portion of the ink cleaning device. As shown in FIG. 1, a cleaning liquid W for cleaning the ink remaining in the ink fountain is placed in the ink fountain of the printing press. Is provided with a cleaning liquid supply mechanism K1. The ink cleaning device also includes a cleaning cleaning liquid suction / recovery mechanism K2 for sucking and recovering a cleaning cleaning liquid containing ink after cleaning together with air from the inside of the ink fountain, and an ink solid from the recovered cleaning cleaning liquid. A cleaning liquid separation mechanism K3 for removing and reusing the cleaning liquid is provided.

  2 is a plan view of the ink cleaning device, FIG. 3 is a front view of the upper portion of the ink cleaning device, FIG. 4 is a circuit of an air supply path for driving the cleaning liquid supply mechanism K1 and the fouling cleaning liquid suction and recovery mechanism K2, and FIG. FIG. 6 shows a plane of the housing case.

Therefore, each of the mechanisms K1, K2, and K3 will be described.
(Cleaning liquid supply mechanism K1)
As shown in FIG. 1, a housing case 12 for housing a pump 18 and a rotating mechanism 25 described later is detachably connected to a lower end portion of a bottomed cylindrical housing case 11 that contains a cleaning liquid W. . An upper housing 13 is detachably connected to the upper end opening surface of the housing case 11, and an upper case 14 is detachably connected to the upper end surface of the upper housing 13. A bottom plate 15 is integrally formed at the lower end opening of the storage case 11, and a cleaning liquid storage chamber R is formed by the storage case 11 and the bottom plate 15.

  A mounting plate 17 is horizontally attached to the bottom surface of the bottom plate 15 via a connecting pipe 16, and the pump 18 is installed on the top surface of the mounting plate 17, and the cleaning liquid W in the cleaning liquid storage chamber R is pumped by the pipe 19. 18 to suck. One end of a pipe 20 is connected to the pump 18, and the other end is connected to a lower end opening of a cleaning liquid passage 11 a provided in the housing case 11. A cleaning liquid passage 13 a is formed in the upper housing 13 so as to communicate with the passage 11 a of the housing case 11, and an upper end portion of the passage 13 a is opened on the inner peripheral surface of the upper housing 13. A proximal end portion of the supply hose 21 is connected. The supply hose 21 penetrates upward through the ceiling wall 13b of the upper housing 13 and is led out to the outside as shown in FIG. 2, and the cleaning liquid is supplied from the tip 21a of the supply hose 21 into an ink fountain of a printing press (not shown). It comes to supply.

  In this embodiment, a cleaning liquid supply path L for supplying the cleaning liquid W from the pump 18 to the ink fountain is formed by the pipe 20, the cleaning liquid passage 11a, the passage 13a, the supply hose 21, and the like.

  The rotating mechanism 25 for rotating the pump 18 is mounted on the lower surface of the mounting plate 17. The rotating mechanism 25 includes a rotating shaft 26 connected to the pump 18, a fan 27 attached to the rotating shaft 26, and a case 28 attached to the lower surface of the mounting plate 17 so as to cover the rotating shaft 26 and the fan 27. It is constituted by.

Next, an air-type mechanism that operates the rotating mechanism 25 will be described.
As shown in FIG. 4, a diversion valve 30 having a flange 29 is attached to the upper outer peripheral wall of the upper housing 13, and the flange 29 is connected to a pressure air source (not shown) provided in the printing press. A plug 31a provided at the tip of the pressure air supply hose 31 is connected.

  A proximal end portion of an air pipe 32 is connected to the first port 30 a of the diversion valve 30. A bracket 13d having an air passage 13c is formed on the ceiling wall 13b of the upper housing 13, and a tip end portion of the air pipe 32 is connected to the air passage 13c, and a first on-off valve 33 is interposed in the air pipe 32. Has been. The air pipe 32 is opened and closed by the operation lever 34 of the first on-off valve 33. Further, a proximal end portion of an air pipe 35 is connected to the air passage 13 c, and a distal end portion of the air pipe 35 is connected to an air passage 13 e provided in the upper housing 13. A lower end portion of the air passage 13e is connected to an upper end of an air passage 11b provided in the wall portion of the housing case 11. A base end portion of a pipe 36 is connected to the lower end portion of the air passage 11b, and a tip end portion of the pipe 36 is communicated with an opening provided on the outer peripheral surface of the case 28 of the rotating mechanism 25.

  In this embodiment, the flange 29, the first port 30a of the flow dividing valve 30, the air pipe 32, the first on-off valve 33, the air passage 13c, the air pipe 35, the air passage 13e, the air passage 11b, the pipe 36, etc. A first air supply path R <b> 1 for supplying air from the air supply hose 31 to the rotation mechanism 25 is configured.

Accordingly, when air is supplied from the pressure air supply hose 31 into the case 28 through the first air supply path R1, the fan 27 and the rotary shaft 26 are rotated, and the pump 18 is operated. As a result, the cleaning liquid W in the cleaning liquid storage chamber R is jetted into the ink fountain of the printing press through the pipe 19, the pump 18, the pipe 20, the path 11a, the path 13a, and the supply hose 21 (cleaning liquid supply path L) as described above. The residual ink in the ink fountain is washed.
(Fouling cleaning liquid suction recovery mechanism K2 and cleaning liquid separation mechanism K3)
Next, the fouling cleaning liquid suction mechanism for sucking the fouling cleaning liquid in the ink fountain together with air and removing it from the ink fountain, and the fouling cleaning liquid suction / recovery mechanism K2 and the cleaning liquid separation comprising the recovery mechanism for collecting the sucked fouling cleaning liquid The mechanism K3 will be described.

  Inside the upper housing 13, a housing cylinder portion 13 f is integrally formed in the lateral direction. An air discharge cylinder 41 having a horizontal cylindrical air discharge passage 41a is housed and fixed inside the storage cylinder portion 13f, and the tip of an air injection nozzle 42 having an air passage 42a at the inner end of the air discharge cylinder 41. The part is fitted and fixed. An annular groove 42b is formed on the outer peripheral surface of the air injection nozzle 42, and air injection holes 42c are formed at a plurality of locations so as to connect the groove 42b and the air passage 42a obliquely.

  As shown in FIG. 4, a second air for supplying pressure air from the pressure air supply hose 31 to the groove 42b is provided between the second port 30b of the flow dividing valve 30 and the groove 42b of the air injection nozzle 42. An air supply path R2 is provided. A second on-off valve 44 is interposed in the middle of the second air supply path R2, and the operation lever 45 can stop the supply of pressure air to the air injection nozzle 42 by the second air supply path R2. ing. Since the second air supply path R2 is configured in the same manner as the first air supply path R1, a detailed description of the configuration is omitted.

  As shown in FIG. 1, a mortar-shaped partition member 51 is accommodated inside the lower portion of the upper housing 13, and the partition member 51 is fixed to the upper end opening edge of the housing case 11. On the upper side of the partition member 51, a recovery separation chamber 52 is formed for recovering the dirty cleaning liquid W, removing ink solids from the cleaning liquid, and recovering the cleaning liquid. A filter 53 for removing the solid matter of ink from the cleaning liquid W and separating the cleaning liquid is placed on the spherical upper surface of the partition member 51.

  As shown in FIGS. 2 and 3, a suction cylinder portion 54 is attached to the upper surface of the upper housing 13 so as to incline upward so as to communicate with the recovery / separation chamber 52. A proximal end portion of the flexible pipe 55 is connected to the distal end portion. A nozzle 56 is connected to the tip of the flexible pipe 55. A cleaning liquid supply hose 21 is accommodated inside the suction cylinder portion 54, the flexible pipe 55, and the nozzle 56.

  Therefore, when the second opening / closing valve 44 is opened, an air supply source (not shown) on the offset printing press side passes through the flange 29, the diversion valve 30, the second port 30b, the second air supply path R2, and the second opening / closing valve 44. Thus, the pressure air is supplied into the groove portion 42b of the air injection nozzle 42 and is injected obliquely from the groove portion 42b toward the air discharge passage 41a of the air discharge tube 41 through the air injection hole 42c. As a result, the air in the recovery / separation chamber 52 is sucked into the air passage 42a of the air injection nozzle 42 and discharged outside through the air discharge passage 41a. Therefore, the pressure in the recovery / separation chamber 52 is in a negative pressure state, whereby the pressure inside the suction cylinder portion 54, the flexible pipe 55 and the nozzle 56 is reduced, and air is sucked from the tip portion of the nozzle 56. Therefore, the fouling cleaning liquid containing ink in the ink fountain of the printing press is sucked together with air and sucked into the recovery / separation chamber 52. In the recovery / separation chamber 52, air is discharged to the outside from the air passage 42 a of the air injection nozzle 42 through the air discharge passage 41 a of the air discharge cylinder 41. On the other hand, the fouling cleaning liquid containing solid ink sucked into the recovery / separation chamber 52 is separated into cleaning liquid and ink by the filter 53, and the cleaning liquid is recovered into the cleaning liquid storage chamber R from the discharge port 51 a provided in the partition member 51. Is done. Further, the solid ink is collected on the upper surface of the filter 53.

  The solid ink recovered by the filter 53 is combined with the filter 53 in a state where the partition member 51 is connected to the upper surface of the storage case 11 in FIG. 1 and the upper housing 13 is removed from the upper end opening surface of the storage case 11. Discarded and replaced with a new filter 53.

  Next, when the ink cleaning device is interposed between the bottom plate 15 and the partition member 51 and the ink cleaning device is inclined, the cleaning liquid stored in the cleaning liquid storage chamber R is prevented from flowing back to the recovery separation chamber 52 side. The backflow prevention valve 61 for this will be described.

  A support 62 is erected at a predetermined position on the upper surface of the central portion of the bottom plate 15, and an inverted conical guide that is lowered toward the center on the upper surface of a mortar-shaped guide member 63 fixed to the upper end surface of the support 62 by welding or the like. A slope 63a is formed. A tilting holder 64 having a cylindrical shape is disposed above the guide member 63, and a holder 66 having a rolling element 65 is inserted and fixed in a lower end opening of the tilting holder 64. A holder 67 is screwed and fixed to the upper end opening of the tilting holder 64, and the upper end of the holder 67 is accommodated in a valve accommodating chamber 51 b formed so as to correspond to the discharge port 51 a of the partition member 51. A spherical valve body 68 is connected.

  Therefore, when the ink cleaning device is tilted, the rolling element 65 rolls on the guide slope 63a of the guide member 63 and moves upward, so that the tilt holder 64, the holder 67, and the valve body 68 are moved upward. The discharge port 51a is closed by the valve body 68. As a result, since the discharge port 51a is closed by the valve body 68 even when the ink cleaning device is overturned, the cleaning liquid W flows backward from the cleaning liquid storage chamber R to the recovery separation chamber 52 side, and from the recovery separation chamber 52 to the outside. Can be prevented.

According to the ink cleaning device of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the cleaning liquid W is supplied from the cleaning liquid storage chamber R provided in the storage case 11 to the supply hose 21 by the pump 18 driven by the rotation mechanism 25, and the cleaning liquid is supplied into the ink fountain. . In addition, by supplying pressure air to the groove portion 42b of the air injection nozzle 42 and discharging the air to the outside from the air injection hole 42c, the recovery separation chamber 52 is brought into a negative pressure state, so that the dirty cleaning liquid and ink after the ink cleaning are discharged into the air. At the same time, the air is recovered from the nozzle 56 into the recovery / separation chamber 52 through the flexible pipe 55 and the suction cylinder portion 54, and the air is discharged to the outside through the air passage 42a and the air discharge passage 41a. Was removed, and the cleaning liquid was collected in the cleaning liquid storage chamber R. For this reason, the cleaning operation of the residual ink in the ink fountain can be efficiently performed. In addition, the used cleaning liquid can be reused.

  (2) In the above embodiment, the pump 18 is operated using the pressure air supplied from the pressure air supply source of the printing press, and the pressure is supplied to the air injection nozzle 42. For this reason, it is not necessary to provide a separate pressurized air supply source or an electric motor, so that the number of components can be reduced, manufacturing can be facilitated, and cost can be reduced.

  (3) In the above embodiment, since the backflow prevention valve 61 for closing the discharge port 51a of the partition member 51 is provided, the ink is accidentally discharged from the cleaning liquid storage chamber R to the outside when the ink cleaning device falls. Can be prevented.

In addition, you may change the said embodiment as follows.
An electric motor may be used as a drive source for the pump 18.
As a mechanism for generating negative pressure in the recovery / separation chamber 52, a blower that discharges air from the recovery / separation chamber 52 to the outside of the upper housing 13 by an electric motor may be used.

  A brush, scraper, or other ink removing member for efficiently collecting ink remaining in the ink fountain may be provided at the tip of the nozzle 56.

The center part longitudinal cross-sectional view which shows one Embodiment which actualized the ink cleaning apparatus of this invention. The top view of an ink cleaning apparatus. The front view of the upper part of an ink cleaning apparatus. Sectional drawing which shows the structure of the air supply path | route of pressure air. The bottom view of the state which opened the storage case of the lower part of an ink cleaning apparatus. The top view of the storage case which forms a washing | cleaning liquid storage chamber.

Explanation of symbols

  W: Cleaning liquid, K1: Cleaning liquid supply mechanism, K2: Fouling cleaning liquid suction / recovery mechanism, K3: Cleaning liquid separation mechanism, 18 ... Pump, 21 ... Supply hose, 21a ... Tip, 56 ... Nozzle.

Claims (7)

A tank for storing cleaning liquid;
A cleaning liquid supply mechanism having a supply hose for supplying the cleaning liquid in the tank into the ink fountain;
A fouling cleaning liquid suction mechanism equipped with a suction hose for sucking the fouling cleaning liquid used for ink cleaning from the ink fountain together with air;
An ink cleaning apparatus comprising: a recovery mechanism for recovering the fouling cleaning liquid sucked by the fouling cleaning liquid suction mechanism. 2. The ink cleaning apparatus according to claim 1, wherein the recovery mechanism includes a separation mechanism for removing solid matter of ink from the fouling cleaning liquid and returning the cleaning liquid to the tank. The power for operating the fouling cleaning liquid suction mechanism according to claim 1 or 2 is pressure air supplied from a pressure air generation source, and generates a suction air flow according to a spraying principle. An ink cleaning device characterized by that. The cleaning liquid supply mechanism according to any one of claims 1 to 3, wherein the cleaning liquid supply mechanism pumps the cleaning liquid from the tank and supplies the cleaning liquid to the supply hose. The pump is supplied from a pressure air generation source. An ink cleaning device configured to be operated by pressure air. 5. The ink cleaning apparatus according to claim 3, wherein the pressure air generation source is provided in a printing press. 6. The ink removing member according to claim 1, wherein an ink removing member is provided in the vicinity of the nozzle provided at the tip of the cleaning liquid supply hose for cleaning in contact with the ink adhering to the inner wall of the ink fountain. An ink cleaning device characterized by that. 7. The ink cleaning apparatus according to claim 1, wherein a cleaning liquid supply hose is inserted into the fouling cleaning liquid suction hose.

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