JPH0314366Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ink removal device used, for example, when replacing ink in a newspaper printing machine.

Generally, the printing machine 20 that prints newspapers has a first
As shown in the figure, the main body 21, ink pump 22, ink rail 23, ink cylinder 24, ink transfer roll 25, second ink cylinder 26, ink application roll 27, plate cylinder 28, blanket cylinder 2
9, it is composed of an impression cylinder 30, etc., and newsprint 3
1 is sent between a blanket cylinder 29 and an impression cylinder 30 for printing.

Printing ink is usually black, and it reaches the ink pump 22 from a supply source through a main pipe 32 and a branch pipe 34 having an on-off valve 33 .

The ink pump 22 is, for example, an eight variable pump, and has a single common suction port 35 to which a branch pipe 34 is connected, and eight discharge ports 3 connected to each pump section.
It is equipped with 6.

The ink rail 23 can be joined to the outer periphery of the ink cylinder 24 and can be rotated approximately 90 degrees around a fulcrum 37 during cleaning, and has eight rails at equal intervals in the axial direction that reach the application surface 38. Two ink jet ports 39 are bored, and the ink jet ports 3
9 and the discharge port 36 of the ink pump 22 are connected via piping 40, respectively.

Therefore, the ink that has reached the common suction port 35 of the ink pump 22 is branched and pressurized by each variable pump section, and then flows from each ink jet port 39 of the ink rail 23 via the discharge port 36 and piping 40. The ink is ejected and applied to the ink cylinder 24. That is, the ink deposited on the ink cylinder 24 is divided into eight sections in the axial direction, and the amount of ink can be adjusted for each section by the variable pump section of the ink pump 22.

Incidentally, most newspapers are printed only with black ink, but in recent years, color printing has become more common.

In such a case, close the on-off valve 33 of the branch pipe 34 to interrupt the supply of black ink from the supply source, and
The connection between the branch pipe 34 and the suction port 35 of the ink pump 22 is released, and instead, the conduit 42 of the transportable tank 41 storing other color ink is connected to the ink pump 22 as shown in the left half of FIG. Connect to the inlet 35 of the

Then, the ink rail 23 is reversed about the fulcrum 37 and separated from the ink cylinder 24, and the ink in the tank 41 is ejected from the ink ejection port 39 of the ink rail 23 by the ink pump 22.

In this case, the previously used black ink remains inside each of the ink pump 22, piping 40, and ink rail 23, so it takes until the ink in the tank 41 comes out from the ink spout 39. During this time, the residual black ink that is gradually extruded must be wiped off with a cloth or the like.

However, if residual ink is removed manually in this way, it takes a lot of time and effort, which leads to poor work efficiency, and the printing press has to be stopped during that time, which lowers the operating rate. This was extremely problematic.

This invention was devised to solve the problems mentioned above, and its purpose is to:
Residual ink when replacing ink can be removed extremely quickly and easily, dramatically improving work efficiency, and also reducing downtime of the printing press and reducing operating efficiency. An object of the present invention is to provide an ink removal device for a printing press that prevents ink from being removed.

The ink removing device for a printing press of the present invention includes an ink removing main body that can come into contact with the coating surface of an ink rail, a magnet that is embedded in the ink removing main body and can be magnetically attached to the ink rail, and a magnet that is installed in the ink removing main body. A suction port facing the ink jetting port of the ink rail, a delivery port provided on the ink removal body and connected to the suction pump, and a conduit provided on the ink removal main body that communicates the suction port and the delivery port. Its characteristics lie in its composition.

In other words, the residual ink is not manually wiped off, but is removed by forced mechanical suction.

Therefore, according to the present invention, residual ink can be removed extremely quickly and easily, and the work efficiency can be dramatically improved.

Furthermore, since the ink can be replaced quickly, the downtime of the printing press can be significantly shortened and the operating rate will not be reduced.

Furthermore, according to the present invention, since a magnet is provided and magnetically attached to the ink rail made of a magnetic material, it is possible to maintain a good correspondence between the ink jet port of the ink rail and the suction port of the ink removal body. In addition, the operator does not have to hold the device continuously during ink removal, making the work extremely easy.

Since the structure is simple, there is almost no fear of failure and it can be made at low cost.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram showing the structure of a newspaper printing machine. FIG. 2 is a front view showing an ink removal device for a printing press according to an embodiment of the present invention. Figure 3 is its bottom view. FIG. 4 is a side view showing the state of use.

The main parts of the ink removal device 1 for a printing press include an ink removal main body 2, a magnet 3, an inlet 4, an outlet 5, and a guide path 6.

The ink removal body 2 can abut the application surface 38 of the ink rail 23.

In this example, an elongated block-shaped joined body 7,
Eight small-diameter pipes 8 were established at equal intervals on this
, a horizontal large-diameter pipe 9 that connects the upper ends of the small-diameter pipes 8 to each other, a cap 10 that blocks both ends of the horizontal large-diameter pipe 9, and a vertical pipe 9 established in the middle of the horizontal large-diameter pipe 9. It is composed of large diameter pipes 11, and the insides of each pipe are in communication with each other.

The lower surface of the bonded body 7 is shallowly cut in the center part excluding the peripheral part to form a cavity 12, and the peripheral part has a convex arc shape so as to fit the application surface 38 of the ink rail 23. It is made on the joint surface 13.

The eight small diameter pipes 8 reach the cavity 12,
The lower end of the small diameter pipe 8 becomes the suction port 4, which faces the ink jet ports 39 of the ink rail 23, respectively.

The upper end of the vertical large-diameter pipe 11 serves as a delivery port 5, and the insides of the small-diameter pipe 8, horizontal large-diameter pipe 9, and vertical large-diameter pipe 10 serve as conduits 6 that communicate the suction port 4 and the delivery port 5. , a suction pipe 14 is provided at the outlet 5.
Suction pump 15 and storage tank 16 are connected via.

An appropriate number of magnets 3 are embedded in the bonded body 7 and reach the bonding surface 13, and can be magnetically attached to the ink rail 23 made of a magnetic material.

Furthermore, an outside air intake groove 17 facing each intake port 4 is cut in the lower surface of the joined body 7.

Next, based on such a configuration, a procedure for removing residual ink will be explained.

When exchanging ink, the conduit 42 of the tank 41 is replaced with a branch pipe 34 and connected to the common suction port 35 of the ink pump 22, and the ink rail 23 is separated from the ink cylinder 24 to be in a horizontal state.

The ink removing main body 2 is placed on the application surface 38 of the ink rail 23, and the ink removing main body 2 is magnetically attached in an upright state by the magnet 3. At this time, each suction port 4 is arranged so as to face the ink jet port 39 of the ink rail 23.

When the suction pump 15 connected to the outlet 5 of the ink removal main body 2 via the suction pipe 14 is started, the residual ink is sucked into the ink rail 23, piping 40, and ink pump 22 by its negative pressure. Then, the ink in the tank 41 is attracted, and the remaining ink is stored in the storage tank 16 connected to the suction pump 15. In the suction operation described above, since the outside air is sucked in through the outside air suction groove 17 provided on the lower surface of the ink removal main body 2, the residual ink is effectively sucked by this outside air flow.

When the suction removal of the residual ink and the cleaning of the ink cylinder 24, etc. are completed, the ink removal main body 2 is removed from the ink rail 23 and externally joined to the ink cylinder 24 as shown in the left half of FIG. 1, and the tank is removed. Printing is performed using the ink in 41.

In this embodiment, the ink removal main body 2 is composed of a joined body 7, a small diameter pipe 8, a horizontal large diameter pipe 9, a cap 10, a vertical large diameter pipe 11, etc., but the invention is not limited to this. For example, it is composed of a single block-like structure, and includes an inlet 4, an outlet 5, and a conduit 6.
etc. may be formed respectively.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the structure of a newspaper printing machine. FIG. 2 is a front view showing an ink removal device for a printing press according to an embodiment of the present invention. Figure 3 is its bottom view. FIG. 4 is a side view showing the state of use. DESCRIPTION OF SYMBOLS 1... Ink removal device for printing presses, 2... Ink removal main body, 3... Magnet, 4... Suction port, 5... Outlet port, 6... Guide path.

Claims (1)

[Scope of utility model registration request] An ink removal body that can come into contact with the application surface of the ink rail, a magnet that is embedded in the ink removal body and can be magnetically attached to the ink rail, and an inlet that is provided in the ink removal body and faces the ink jet port of the ink rail. An ink for a printing press, comprising: an outlet provided in the ink removing body and connected to a suction pump; and a conduit provided in the ink removing body and communicating the suction port and the outlet. removal device.