JP3453295B2 - Ink storage device for printing press - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink storage device for a printing machine such as a rotary printing machine or a sheet-fed printing machine.

[0002]

2. Description of the Related Art As an ink storage device of this type of printing machine, for example, those shown in FIGS. 7 to 9 are known. Figure 7
8 and FIG. 8 are views for explaining a schematic configuration of an ink storage device of a general printing machine installed in a sheet-fed printing machine, FIG. 7 is a plan view, and FIG. 8 is a side sectional view. FIG. 9 is a diagram for explaining a defect of the ink storage device of this printing machine. That is, the ink storage device 1 of the conventional printing press is shown in FIGS.
, At least the ink source roller 8, the left and right side plates 5a and 5b (hereinafter collectively referred to as reference numeral 5),
It has a pot portion 100 constituted by an ink blade 9 serving as a bottom wall surface.

Each of the side plates 5 is located at both ends of the ink source roller 8 in the axial direction, and a part of the leading end is provided so as to be in sliding contact with the outer peripheral surface of the ink source roller 8. The ink blade 9 forms the bottom wall surface of the pot portion 100, and is configured by a plurality of ink keys 6a to 6n (a, b, ... . The ink 7 supplied into the pot 100 adheres to the ink source roller 8 through the gap between the outer peripheral surface of the ink source roller 8 and the tip of the ink blade 9, and is rotatably transferred. Subsequently, the ink is transferred to the ink roller group on the downstream side through a calling roller (not shown) that comes into contact with and separates from the ink source roller 8, and is used for printing.

The ink 7 which is about to flow outward from the pot portion 100 in the widthwise direction is supplied to the ink source roller 8 and the pot portion 100.
Outflow to the outside is prevented by the sliding contact portions with the side plates 5 provided on both sides of the. The thickness of the ink film attached to the outer peripheral surface of the ink source roller 8 is determined by appropriately adjusting the gap between the outer peripheral surface of the ink source roller 8 and the tip of the ink blade 9 described above. By the way, as a means for adjusting the thickness of the ink film formed on the outer peripheral surface of the ink source roller 8 in the axial direction of the ink source roller 8, a general ink blade 9 is divided into a plurality in the lateral direction of the apparatus. The ink keys 6 are structured so that the ink keys 6 independently swing around the fulcrum shaft 10, and the tip ends of the ink keys 6 can be moved up and down by a drive unit 11.

The ink 7 which is about to flow downward from the ink blade 9 itself is prevented by the sliding contact surface of the adjacent ink keys 6. Also, the pot part 10
The side plate 5 and the ink blade 9, which form 0, are attached to a pair of swing brackets 30a and 30b (hereinafter collectively referred to by the reference numeral 30). The swing bracket 30 is configured to swing with respect to the horizontal beam 27 installed in the lateral direction of the apparatus with reference to the rotation center axis 4. Therefore, the side plate 5 and the ink blade 9 can be swung so as to come into contact with and separate from the outer peripheral surface of the ink source roller 8.

On the other hand, an ink guide (trough) 33 is provided below the tip of the ink blade 9, and below the ink guide 33 is a tray for receiving the ink 7 flowing down from the ink guide 33. 2 is fixedly provided. The ink guide 33 is installed to guide the ink 7 flowing down from the tip of the ink blade 9 to the tray 2, and is formed slightly wider than the width of the ink blade 9 in the axial direction of the ink source roller 8. Side walls are provided along both width ends.

In the ink storage device 1 of the printing press constructed as described above, when exchanging the ink 7 due to, for example, an order change or the like, first, most of the ink 7 remaining in the pot portion 100 is removed with a dedicated spatula. Scoop and collect in a designated ink can. Thereafter, as shown in FIG. 9, the swing bracket 30 is swung in the opening direction A about the rotation center shaft 4 to separate the side plates 5 and the ink blades 9 of the pot 100 from the ink source roller 8. . Then, each ink key 6 constituting the ink blade 9 and each side plate 5
Alternatively, the ink 7 attached to the outer peripheral surface of the ink source roller 8 is wiped and washed.

[0008]

However, in the ink storage device 1 of the above-mentioned conventional printing machine, when the ink blade 9 is retracted from the ink source roller 8 in the above cleaning, the ink blade 9 and the ink are Since the close state with the original roller 8 is eliminated, the residual ink 7 flows down from between them. And the ink 7
Since it is diluted with a cleaning agent, a solvent, or the like to improve its fluidity, it flows from the tip of the ink blade 9 to the lower surface side of the ink blade 9, flows backward, and then drops.

For this reason, the ink 7 and the solvent drop not only on the ink guide 33 but also on the drive device 11 for adjusting the vertical position of each ink key 6 and its surroundings, not only soiling those parts but also dropping them. There is a risk that the ink 7 may become clogged in the rotating portion and the sliding portion of the driving device 11 to make the operation of the driving device 11 uncertain or to disable the operation. The present invention has been made in view of the above circumstances, and when the ink blade retracts from the ink source roller, the ink storage device of a printing machine that can reliably collect the ink, its solvent, and the like at a predetermined position. The challenge is to provide.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided with an ink source roller, a pot portion formed by an ink blade and both side plates,
In an ink storage device of a printing machine in which the ink source roller and the tip of the ink blade can contact and separate, ink flows down from the ink blade to the tray at the tip of the ink blade with the ink blade separated from the ink source roller. a guide extending downward for causing provided, a guide a of the guide is disposed below the tip of the ink blade,
A guide B provided so as to be swingable with respect to the guide A via a hinge and extending downward, and provided on the guide A, and extending from the guide A to the lower surface on the tip side of the ink blade. , A guide C elastically contacting the lower surface of the same. The invention according to claim 2 is
In the invention according to claim 1 , a flexible guide sheet is provided in the guide A instead of the hinge and the guide B, and the upper end portion of the flexible guide sheet is the guide A.
It is characterized in that the whole is extended downward.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described based on examples with reference to FIGS. 1 to 4 are the first embodiment, FIG. 5 is the second embodiment, and FIG. 6 is the third embodiment.
An example is shown.

First, a first embodiment will be described with reference to FIGS. However, elements common to the constituent elements of the conventional example shown in FIGS. 7 to 9 are designated by the same reference numerals to simplify the description. Ink storage device 1 of the printing machine shown in this embodiment
Is at least the ink source roller 8 and the ink blade 9
And a pair of both side plates 5a and 5b (hereinafter collectively referred to as reference numeral 5), which is provided below the tip of the ink blade 9 and fixed to each side plate 5. A guide A21, a guide B23 swingably supported via a hinge (swing joint) 22 fixedly provided on the back side of the guide A21, and a back surface of the guide B23 so as to contact the guide B23. A guide shaft 29 for movably guiding and the guide A21 provided on the guide A21.
From the ink blade 9 to the lower surface on the tip side of the ink blade 9, and a guide C26 elastically contacting the lower surface, and the guide B2.
3 is provided below the guide B23 and has a pan 2 having a breadth that complements the entire area of the position directly below the lower end of the guide B23 even if the lower end of the guide B23 moves.

The above structure will be described in more detail below. That is, as shown in FIG. 1, an ink storage device 1 of a printing machine is installed in a rotary printing machine, a sheet-fed printing machine, or the like, and includes at least an ink source roller 8, left and right side plates 5, and a bottom. It is provided with a pot portion 100 composed of an ink blade 9 which becomes a wall surface. Each side plate 5 is located at both ends of the ink source roller 8 in the axial direction, and is provided so that a part of its tip is in sliding contact with the outer peripheral surface of the ink source roller 8. The ink blade 9 forms the bottom wall surface of the pot 100, and is a, b ... n in the lateral direction of the apparatus.
Ink keys 6a to 6n (hereinafter,
(Generally indicated by reference numeral 6)).

Each ink key 6 swings independently about a fulcrum shaft 10 via a drive unit 11 so that the tip end portion moves up and down. The driving device 11 causes the corner portion R to abut on the lower surface on the tip side of each ink key 6 and the fulcrum pin 12
The arm plate 13 swinging around the center of the arm plate 13 is engaged with the lower end of the arm plate 13 and the knob 15 is rotated, or the fixed gear 15 is rotated by the gear 17 attached to the shaft end of the motor 16. The pusher 18 that expands and contracts in the left-right direction (axial direction) in FIG. 1 by moving it, and the rotation speed (rotation angle) from the gear 15 fixed to the pusher 18 through the gear 19 are measured, and the movement amount of the pusher 18 is measured. It is composed of an encoder 20 and the like for detecting.

Therefore, the drive unit 11 expands and contracts (moves in the front-rear direction) the pusher 18 by rotating the knob 14 manually or electrically as needed, and the arm plate 13 with which the tip of the pusher 18 abuts, The fulcrum pin 12 is used as a fulcrum for rocking. Also,
In conjunction with this swinging, the tip end of each ink key 6 contacting the corner portion R of the arm plate 13 is moved up and down, thereby making a gap between the tip end of each ink key 6 and the outer peripheral surface of the ink source roller 8. It can be set to the size of.

Further, the driving device 11 feeds back a detection signal from the encoder 20 provided side by side to the motor 16 via a control device (not shown), and controls the number of revolutions of the motor 16 to control each ink key 6.
It is also possible to perform remote operation so that the gap between the tip of the ink source roller and the outer peripheral surface of the ink source roller 8 can be automatically set to a value input to the control device. Further, the ink blade 9 and each side plate 5 are attached to swing brackets 30a and 30b (hereinafter collectively referred to by reference numeral 30) which swing on the basis of the rotation center axis 4 provided on the horizontal beam 27. , Fig. 3
As shown in FIG. 4, each tip is configured to be able to come into contact with and separate from the outer peripheral surface of the ink source roller 8.

With the above function, the thickness of the ink film transferred and supplied to the outer peripheral surface of the ink source roller 8 can be adjusted, and particularly, the thickness of the ink film can be adjusted over the entire axial direction of the ink source roller 8. Has become. In addition, the ink storage device 1 of the printing machine according to this embodiment includes the above-mentioned pot portion 10
Below 0, an ink guide as shown in FIGS. 2 to 4 is provided as a guide for guiding the ink 7 flowing down from the tip of the ink blade 9 to the tray 2. This ink guide is a guide A21 whose both width ends are fixed to each side plate 5 with bolts 3 along the axial direction of the ink source roller 8.
A guide B23 that is swingably attached to the guide A21 via a plurality of sets of hinges 22, and a guide A21.
Of the guide B23 is supported by the guide C26 which is sandwiched between the upper end of the guide B26 and the pressing plate 24 and fixed by the Sarabis 25, and the mounting plates 28 which are fixed by bolts at both ends of the horizontal beam 27. The guide shaft 29 is provided at least.

The guide A21 is adapted to move integrally with the swing bracket 30 by being fixed to each side plate 5 of the pot 100. The guide B23 swingably connected to the guide A21 has a bottom plate and side walls located on both left and right sides of the bottom plate and wider than the space between the side plates 5 and 5. Has become. On the other hand, the guide C26 is formed of a flexible elastic material such as rubber in a plate shape, and the lower end portion thereof is the guide A.
21 and the pressing plate 24 so that the upper end always comes into contact with the lower surface of the tip end side of the ink key 6 in close contact, and the left and right side surfaces at the upper end side come into close contact with the inner surface of each side plate 5. It is set. Further, the guide shaft 29 slidably supports the lower surface of the guide B23 that swings via the hinge 22, holds the guide B23 so as to extend obliquely downward, and holds the tip of the guide B23 in the tray. 2 It is functioning to guide you up.

In the ink storage device of the printing press constructed as described above, for example, when the ink 7 in the pot portion 100 is replaced due to an order change, the pot portion 10 is first used.
Ink 7 in 0 is collected in an ink can with a special spatula.
After that, the ink key group 6 that remains slightly is changed from the state of FIG. 3 to the state of FIG. 4, that is, the swing bracket 30 is retracted to the cleaning position about the rotation center shaft 4, and the side plates 5 and the ink blades 9 are removed. In a state of being separated from the ink source roller 8, in this state, the group of ink keys 6 (ink blade 9), each side plate 5 and the outer peripheral surface of the ink source roller 8 are wiped and cleaned.

During such cleaning, the ink blade 9
The guide B23 is lifted together with the side plate 5 in conjunction with the backward movement of. At this time, the bottom surface of the bottom plate of the guide B23 slides on the guide shaft 29 and rises. Further, the side plate 5 and the ink blade 9 are separated from the ink source roller 8, so that the ink 7 is removed from the ink blade 9.
The flow is such that it flows down from the tip of the ink, and part of it flows around the lower surface side of the ink blade 9 due to viscosity.

However, this flow is stopped by the guide C26 that is in close contact with the lower surface of the ink blade 9, flows down from this guide C26 through the pressing plate 24, the guide A21 and the guide B23, and is reliably collected in the receiving tray 2. Will be. That is, it is possible to prevent the ink 7 that has turned to the lower surface of the ink blade 9 from dropping as it is. Therefore, it is possible to solve the problem that the ink 7 and its solvent drop during cleaning and are scattered on the drive device 11 and its surroundings. Related labor saving can be achieved.

Next, a second embodiment of the present invention will be described with reference to FIG. However, elements common to those of the first embodiment are designated by the same reference numerals to simplify the description. This embodiment differs from the first embodiment in that a flexible seat (swing joint) 31 is provided in place of a plurality of sets of hinges 22. That is, the flexible sheet 31 is composed of an elastic plate having flexibility such as rubber,
One end portion (upper end portion) is fixedly connected to the back surface of the guide A21 by a fixing means such as a screw or adhesive, and the other end portion (lower part) is attached to the upper back surface of the guide B23. It is fixedly connected by a fixing means such as a screw or adhesive. That is, the flexible sheet 31 is fixed at the same position as the hinge 22 of the first embodiment in place of the hinge 22.

The flexible sheet 31 is arranged in the lateral direction of the apparatus,
That is, in the axial direction of the ink source roller 8, the guide A2
It may be one sheet having a length of 1 whole area,
Further, it may be in the form of a sheet that is divided into two or more sheets in the axial direction of the ink source roller 8. In addition,
Guide A21, pressing plate 24, guide C26, guide B
The configuration and functions of 23 and the like are similar to those of the first embodiment.

Since the flexible sheet 31 having a simpler structure than that of the hinge 22 is used in the ink storage device 1 of the printing press constructed as described above, the structure is simpler than that of the first embodiment. At the same time, the cost can be reduced. Others have the same effects as those of the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIG. However, elements common to those of the first embodiment are designated by the same reference numerals to simplify the description. The difference of this embodiment from the first embodiment is that a flexible guide sheet 32 is provided instead of a plurality of sets of hinges 22 and guides B23. That is, the flexible guide sheet 32 has its upper end fixedly connected to the back surface of the guide A21 by a fixing means such as a screw or adhesive, and
By contacting the guide shaft 29 at its intermediate portion, the whole extends obliquely downward, and its lower end is positioned above the tray 2.

The flexible guide sheet 32 is made of a flexible elastic plate such as rubber and has a length not less than the entire length of the guide A21 in the lateral direction of the apparatus, that is, in the axial direction of the ink source roller 8. Has a widthwise spread. In addition, the flexible guide sheet 32
Is an intermediate portion, that is, a predetermined portion between the upper and lower portions,
By being supported by, the lower end has rigidity such that it is guided onto the saucer 2, and the vertical direction (vertical direction)
Has a length of. In addition, the guide A21, the pressing plate 2
4, the configuration and functions of the guide C26 and the like are the same as in the first embodiment.

In the ink storage device 1 of the printing press constructed as described above, when the ink blade 9 moves backward,
The flexible guide sheet 32 rises together with the guide A21.
At this time, the soft guide sheet 32 rises while its lower surface slides on the guide shaft 29. Then, the ink blade 9 separates from the outer peripheral surface of the ink source roller 8, whereby the ink 7 flows down from the tip of the ink blade 9. The ink 7 wraps around from the tip of the ink blade 9 to the lower surface and tries to move to the rear end side. However, the flow of the ink 7 is blocked by the guide C26, and from the guide C26 to the pressing plate 24 and the guide A2.
First, it flows down through the flexible guide sheet 32 and surely falls on the tray 2 to be collected.

As a result of the above, it is possible to prevent the ink 7 and its solvent, etc. from scattering on the drive device 11 and its surroundings, and it is possible to obtain the same effects as in the first embodiment, and at the same time, the hinge 22 and the guide. B23 is a flexible guide sheet 3
Since it will be replaced by 2, there is an effect that handling is easy. Moreover, the hinge 2 having a complicated structure
Since one flexible guide sheet 32 having a simple structure is used instead of 2 and the guide B23, the structure can be simplified and the cost can be reduced.

The flexible guide sheet 32 is formed of a flexible flat plate, but may be formed in a U-shaped curved shape so that the central portion in the width direction is concave. Good. In this case, the flexible guide sheet 32
Even if the upper end of the guide is flat due to the guide A21, the lower part of the guide has a concave groove shape, so that the rigidity is high and the ink 7 and its solvent flowing down can be reliably transferred to the tray 2. It has the advantage of being able to guide you.

[0030]

According to the first aspect of the invention, since the guide is provided, the ink, the solvent and the like can be collected at a predetermined position. In the invention according to claim 2, since the guide C extends from the guide A to the lower surface on the tip side of the ink blade and is in elastic contact with the lower surface, the ink blade is retracted from the ink source roller. The ink, its solvent, etc., wrap around from the tip side of the ink blade to the lower surface and drop as it is above the guide C.
And the same ink or the like can be guided by the guide B and can be reliably collected at a predetermined position. Therefore, it is possible to prevent stains and the like due to dropping of ink or the like. In the invention according to claim 3, since the flexible guide sheet is provided instead of the swing joint and the guide B, the structure is simplified and the cost can be reduced. In addition, the same effect as the invention according to claim 1 is obtained.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an overall schematic configuration of an ink storage device of a printing machine shown as a first embodiment of the present invention.

FIG. 2 is a diagram showing an ink storage device of the printing machine,
It is an expansion perspective view which shows the (A) part of FIG.

FIG. 3 is a diagram showing an ink storage device of the printing machine,
It is a sectional side view which shows the state which comprised the pot part.

FIG. 4 is a diagram showing an ink storage device of the printing machine,
It is a sectional side view which shows the washing | cleaning state of the pot part.

FIG. 5 is a side sectional view showing an overall schematic configuration of an ink storage device of a printing machine shown as a second embodiment of the present invention.

FIG. 6 is a side sectional view showing an overall schematic configuration of an ink storage device of a printing machine shown as a third embodiment of the present invention.

FIG. 7 is a plan view of a main part of an ink storage device of a printing machine shown as a conventional example.

FIG. 8 is a diagram showing an ink storage device of the printing machine,
It is a sectional side view which shows the state which comprised the pot part.

FIG. 9 is a diagram showing an ink storage device of the printing machine,
It is a sectional side view which shows the washing | cleaning state of the pot part.

[Explanation of symbols]

1 Ink storage device of printing machine 5 side plates 8 Ink source roller 9 Ink blade 21 Guide A 22 Swing joint (hinge) 23 Guide B 26 Guide C 31 Swing Joint (Flexible Seat) 32 Flexible Guide Sheet 100 pots

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-18261 (JP, A) JP-A-63-99949 (JP, A) JP-A-53-53412 (JP, A) JP-A 58- 203058 (JP, A) JP-A-6-71861 (JP, A) JP-A-57-31574 (JP, A) Actually open 1-122935 (JP, U) Actually open 57-177740 (JP, U) Actual Kohei 4-20053 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41F 31/04 B41F 31/20 B41F 31/32

Claims (2)

(57) [Claims] 1. An ink storage device of a printing machine, comprising an ink source roller, an ink blade, and a pot portion formed by both side plates, wherein the ink source roller and the ink blade are capable of contacting and separating from each other. In the state of being separated from the ink source roller, a guide extending downward from the ink blade to the receiving tray is provided at the tip of the ink blade, and the guide is disposed below the tip of the ink blade. A guide A, a guide B provided so as to be swingable with respect to the guide A via a hinge and extending downward, and provided on the guide A.
An ink storage device for a printing press, comprising a guide C extending from the guide A to the lower surface of the ink blade on the front end side and elastically contacting the lower surface. 2. The guide A is provided with a flexible guide sheet in place of the hinge and the guide B, and the flexible guide sheet has an upper end portion connected to the guide A and extends entirely downward. The ink storage device according to claim 1, wherein the ink storage device is configured as follows.