JPH07309004A - Ink tray fitted with shutter - Google Patents

Abstract

PURPOSE:To simplify the cleaning work at the time of color replacement by providing a shutter to the ink outflow opening part provided to the front end surface of an ink tray main body in a suspended state through a shutter guide and a shutter holding mechanism. CONSTITUTION:An ink tray 11 in such a state that a shutter 12 is closed is arranged on the ink key 9 in the ink pot 2 corresponding to a spot printing position so that the ink seal members 4 provided to the leading end parts of both side plates 11b of the ink tray 11 are brought into close contact with the outer periphery of an ink fountain roller 1. Subsequently, when a shutter holding mechanism 14 is moved in a circular arc state by rotating the screw thereof to open the shutter 12, the ink in the ink tray 11 becomes a state allowed to flow out to the surface of the ink fountain roller 1. When a printing press is started and the ink fountain roller 1 is rotated, ink is supplied to the spot printing position and an ink seal member 4 is brought into close contact with the outer periphery of the ink fountain roller 1 and the ink is supplied only to a spot printing surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a removable ink tray installed in an ink fountain for facilitating color changing work in a printing machine.

[0002]

2. Description of the Related Art In conventional spot color printing, one or more removable ink trays with a width smaller than the width of the ink fountain are installed in the ink fountain of the printing unit to facilitate the color change work. The ones that are aimed at are proposed. For example, in the case where spot color printing is performed only on one page surface through a paper having a width of 4 pages on a supplementary printing unit of a double-width newspaper rotary press, as shown in FIG. A removable ink tray 21 having a size of one page width is installed in the ink fountain 2 at a position corresponding to spot printing, and the spot color ink is supplied only to a required page surface. . Ink is leaked from the tips of both side plates 21b of the ink tray 21, and a separate partition plate for preventing ink leakage is provided adjacent to the ink tray 21 in order to prevent the leaked ink from diffusing out of the spot printing surface. 3 is mounted in the ink fountain.

An example of a device having the above structure is described in Japanese Patent Application No. 2-6464. In this example, as shown in FIG. 10, the ink tray 21 has a window 21d which is an opening for supplying ink for color change at the spot printing position of the ink source roller 1 and the front end of the ink tray main body 21. A shutter 22 for opening and closing the window 21d is provided on the wall 21c, and the shutter 22 can be moved up and down by a shutter holding mechanism 24. The ink tray 21 is replaced with the ink fountain 2.
When the shutter 22 is raised and the window 21d of the front end wall is opened after being set at a predetermined position inside, the ink in the ink tray 21 is supplied to the surface of the ink source roller 1. The ink supplied to the surface of the ink source roller 1 is the ink fountain 2
The thickness of the film is adjusted according to the pattern on the plate by operating the ink key 9 in FIG. After printing or when changing colors, the shutter 22 is lowered to close the window 21d, and the ink tray 21 is removed from the ink fountain 2 and then attached to the surface of the ink fountain 2 or the tip of the bottom plate 21a of the ink tray. The ink is being wiped off. When changing the color of the spot color, replace it with another ink tray containing ink of a different color, and when changing the application surface of the spot color, change the installation position of the ink tray according to the corresponding position. There is.

[0004]

In the above-mentioned conventional example, although the color changing work is facilitated, there are still the following problems. That is, since the shutter for preventing ink leakage when not in use is moved straight up and down to open and close the window, when removing the ink tray, even if the shutter is closed, the tip of the bottom of the ink tray is closed. A large amount of ink may remain on the. Therefore, when changing colors, not only does it take time to wipe off the ink adhering to the ink tray, but also this residual ink may drop on the machine or the floor surface, or may adhere to the clothes of workers and stain it. There were many. In order to prevent ink leaking from the tips of both side plates of the ink tray from spreading outside the spot printing surface, it is necessary to install a separate partition plate for ink leakage prevention inside the ink fountain adjacent to the ink tray. It was SUMMARY OF THE INVENTION The present invention is intended to solve the conventional problems described above and to provide an ink tray with a shutter that can easily and quickly perform a cleaning operation during color change.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in an ink supply device in which a removable ink tray is installed in an ink fountain of a printing machine, an ink outlet opening provided in a front end surface of an ink tray body. , A shutter that opens and closes the opening is hung via a shutter guide and a shutter holding mechanism, and an ink seal member that adheres to the outer circumference of the ink source roller is attached to the tip ends of both side plates of the ink tray body. In addition, at least the surface of the shutter of the ink tray is coated with an ink adhesion preventing layer, which serves as a means for solving the problem. Further, according to the present invention, a positioning member is attached to the ink fountain, and a positioning portion that engages with the positioning member is provided in the ink tray main body, and the ink tray is further closed when the shutter of the ink tray is closed. A lid for contacting the outer peripheral edge of the upper portion of the main body and the surface of the shutter is provided, which serves as means for solving the problem.

[0006]

According to the first aspect of the invention, when the ink tray with the shutter is used, the ink tray with the shutter closed is positioned in the ink fountain corresponding to the spot printing position, and the end portions of both side plates of the ink tray body are positioned. While the ink seal member of is in close contact with the outer circumference of the ink source roller,
When the shutter holding mechanism is operated and the shutter is moved upwards along the shutter guide and opened, the ink in the ink tray is discharged to the surface of the ink source roller, and the printing machine starts and the ink source Ink is supplied to the spot printing position by the rotation of the roller.
In this way, since the ink seal members attached to the tips of both side plates of the ink tray body are in close contact with the outer circumference of the ink source roller, the supplied ink does not leak to the outside side and does not leak to the spot printing surface. Only ink can be supplied. When color change or printing is completed and ink supply is no longer required, the shutter holding mechanism is operated to move the shutter downward along the shutter guide to close it, making sure that ink does not flow out. Remove the ink tray from the ink fountain.

Further, according to the invention of claim 3, a positioning member is previously attached to the ink fountain at a position corresponding to spot printing, and when an ink tray with a shutter is used, the positioning member is attached to the ink tray main body. When the alignment portion is engaged, the shuttered ink tray can be accurately and easily installed at a predetermined position in the ink fountain. Moreover, since the ink tray body is installed in the ink fountain so as not to move via the positioning member, the position of the ink tray does not shift during operation.
In addition, when changing colors or when printing is finished and ink supply is no longer necessary, when removing the ink tray with shutter, simply lift the ink tray body and remove the alignment part from the ink fountain positioning member. Can be easily removed from the ink fountain. This positioning member should be attached to the ink fountain even when printing with ink on the front surface of the ink fountain, without using the ink tray with shutter, unless it interferes with maintenance and inspection of the ink fountain. Good. According to the invention described in claim 4, when the ink tray with the shutter is left attached in the ink fountain as it is after printing, or when the ink tray with the shutter is removed from the ink fountain and left in the ink tray with the shutter. When storing the ink as it is, when the shutter is completely closed and the lid is placed on the ink tray, the lid comes into contact with the upper outer peripheral edge of the ink tray body and the surface of the shutter.
The ink in the shuttered ink tray can be shielded from the outside air.

[0008]

1 to 4 show a first embodiment of the present invention, and an ink tray 11 with a shutter is used for a supplementary printing unit of a newspaper rotary press. As shown in FIG. 1, the size is one page width. Further, as can be seen from the enlarged view of FIG. 4, the front end surface of the main body of the ink tray 11 has an opening 11d which constitutes a window for ink outflow, and the arc-shaped shutter 12 is provided in the opening 11d. The shutter 12 is configured to move in an up-and-down direction in an arc shape via the rod-shaped and plate-shaped shutter guides 13a and 13b and the screw-type shutter holding mechanism 14 to open and close the opening 11d for ink outflow. ing. Further, an arc-shaped ink seal member 4 that is in close contact with the outer circumference of the ink source roller 1 is attached to the leading ends of the side plates 11b arranged on both sides of the ink tray 11 in the roller axial direction.

In the case where the ink tray 11 with the shutter is used to perform spot color printing on only one page surface of a double-width newspaper printing press supplement unit through 4-page width paper, As shown in FIG. 4, the ink tray 11 with the shutter 12 closed is set to the ink key 9 in the ink fountain 2 corresponding to the spot printing position.
An ink seal member 4 provided on the tops of both side plates 11b of the ink tray 11 is placed on the top of the ink tray 11 in close contact with the outer circumference of the ink source roller 1. Then, the screw 14a of the shutter holding mechanism 14 is turned to move the arcuate shutter 12 in an arcuate direction upward along the shutter guides 13a and 13b, and the shutter 12 is opened as shown in FIG. Ink of the ink source roller 1 is in a state of being discharged onto the surface of the ink source roller 1, and the printing machine is activated to start the ink source roller 1
The ink is supplied to the spot printing position by rotating the. Further, since the ink seal member 4 attached to the tip portions of the both side plates 11b of the ink tray 11 is in close contact with the outer circumference of the ink source roller 1, the ink does not leak to the outside and the ink is applied only to the spot printing surface. Is supplied.

When the ink supply is no longer required at the time of color change or printing is completed, the shutter 12 is held by the shutter holding mechanism 1.
The screw 12 is turned in the opposite direction to lower the shutter 12 in an arc shape along the shutter guides 13a and 13b, and the shutter 12 is closed to prevent ink from flowing out, and the ink tray 11 is removed from the ink fountain 2. At this time, since the lower end of the shutter 12 is configured to slide in an arc shape with respect to the outer circumference of the ink source roller 1, little ink adheres. Then, the ink slightly attached to the ink key 9 in the ink fountain 2 and the tip of the ink tray 11 is wiped off. Next, when changing the color of the spot color, the ink tray 11 containing ink of another different color is replaced. When changing the spot color application surface, the installation position of the ink tray 11 may be changed to the corresponding position. The ink tray 11 according to the embodiment of the present invention is used.
In order that the ink tray 2 can be easily attached to and detached from the ink fountain 2, a handle 8 is attached to the upper portions of the ink tray side plates 11b.
A non-slip rubber sheet 7 is adhered to the contact surface between the bottom plate 11a and the ink key 9.

Further, in the second embodiment of the present invention, the ink is prevented from adhering to at least the surface of the shutter 12 and, if necessary, the inner surface of the ink tray 11, and the adhered ink is wiped off more easily. As described above, it is coated with Teflon or the like for preventing ink adhesion.

5 to 7 show a third embodiment of the present invention.
In the ink tray 30 with a shutter of the present embodiment, as shown in the figure, the shutter guide 33 is composed of a bar-shaped guide 33a having a protrusion at the center and a guide pin 33b. Also, the shutter holding mechanism 34 is of a hook type,
The same as the first and second embodiments except that the hooks 34b are fixed to the lower inner ends of the shutter and the holding pins 34c are fixed to the upper and lower sides of the ejection port side of the side plates 31b of the ink tray. Is the same as. However, in the third embodiment,
As shown in FIGS. 5 and 6, a positioning member 35 is formed by fixing two positioning pins 35b on a strip-shaped bracket 35a having mounting seats with both ends bent at right angles.
Attach it to the upper back surface of the ink fountain 2 with bolts. A positioning pin hole 31e that engages with the positioning pin 35b is formed in the upper portion of the bottom plate 31a of the ink tray.

When using the shuttered ink tray 30 of the third embodiment, the positioning member 35 is first attached in advance to a position corresponding to spot printing. The ink tray body 3 is attached to the pin 35b of the positioning member.
When the positioning pin hole 31e of No. 1 is fitted, the ink tray 30 with shutter is placed at a predetermined position in the ink fountain 2.
Can be installed accurately. Moreover, the ink tray installation position does not shift during operation. Further, when changing the color or when the printing is completed and the ink supply becomes unnecessary and the ink tray 30 is removed, the ink tray main body 31
By lifting up, the pin 35b of the positioning member can be easily dismounted. Further, except when the ink is put on the entire surface of the ink fountain 2 without using the ink tray 30, or when the positioning member 35 is an obstacle for maintenance and inspection of the ink fountain 2, this is used for the ink fountain 2. You can leave it attached. Further, when performing spot color printing using the ink tray 30 with the shutter, the shutter 32 is raised as shown in FIG.
The ink in the ink tray is supplied to the surface of the ink source roller 1 by hooking the holding pin 34c to the open state. Other functions are the same as those in the first embodiment.

According to the third embodiment, since the positioning member 35 is preliminarily attached to the ink fountain 2 at the position corresponding to spot printing, the ink tray 30 with a shutter is used.
When using, the ink tray 30 can be quickly, accurately, and immovably moved to a predetermined position in the ink fountain 2 simply by engaging the positioning portion of the ink tray body 31 with the positioning member 35. Can be installed. Therefore, the preparation work for printing is facilitated, and even if the stirrer is installed in the ink fountain 2, the ink tray 30 does not move during operation due to ink stirring resistance or the like, and the position does not shift. You can
Further, when the ink tray 30 with the shutter is removed when the color change or the printing is completed and the ink supply is not necessary, the ink tray main body 31 is lifted and the alignment portion is removed from the positioning member of the ink fountain. Can be easily removed from the ink fountain in the ink tray.

FIG. 8 shows a fourth embodiment of the present invention. As shown in the figure, the bottom plate 31a and both side plates 31 of the ink tray body are provided on the upper portion of the ink tray 40 with the shutter of this embodiment.
An easily attachable / detachable transparent lid 36 formed so as to come into contact with the outer peripheral edge of the upper portion of b and the surface of the shutter when the shutter 32 is closed. When printing is completed and the ink tray 40 with a shutter is left attached in a predetermined position in the ink fountain 2 as it is, or the ink tray 40 with a shutter is removed from the ink fountain 2 and the remaining ink is the same ink. When storing in the tray 40, as shown in FIG. 7, the shutter 32 is lowered and completely closed to hook the hook 34b on the holding pin 34c so that the ink does not flow out from the tip of the ink tray body. When the lid 36 is placed on the ink tray body 31, the lid 36 comes into contact with the outer peripheral edge of the upper portion of the ink tray body 31 and the surface of the shutter 32 in the closed state, and shields it from the outside air. Therefore, in the ink tray 40 with the shutter covered with the lid 36, since the ink in the ink tray is shielded from the outside air, even if the ink tray 40 is left attached in a predetermined position in the ink fountain, Even if the ink is removed from the ink tray and the remaining ink in the ink tray is left as it is, dust does not enter the tray and the ink does not get dirty. Furthermore, since the drying of the ink can be reduced, the storage becomes easy.

[0016]

As described in detail above, according to the ink tray with the shutter of the present invention, since the opening and closing of the shutter has a structure of sliding in an arc shape along the circumference of the ink source roller, the shutter is closed. When the ink tray is removed by removing the ink tray, ink does not remain on the bottom end of the ink tray. Therefore, the residual ink does not drop on the machine or the floor surface when changing colors, and does not adhere to the clothes of workers to be contaminated. Further, since the ink seal members attached to both side plates of the ink tray are in close contact with the surface of the ink source roller, the ink does not leak outside. Therefore, it is not necessary to install a separate partition plate for preventing ink leakage in the ink fountain, and unnecessary cleaning work due to the leaked ink is not necessary. Further, if an ink adhesion preventing material is applied to the inner surface of the ink tray and the surface of the shutter, it becomes difficult for the ink to adhere to these surfaces, and the adhered ink can be easily removed. As a result, not only the amount of ink adhering to the ink tray and ink fountain decreases, but also the amount of adhering ink wiping off is reduced, which greatly reduces ink wiping work and makes cleaning work easier. Can greatly contribute to the improvement of.

[Brief description of drawings]

FIG. 1 is a plan view of an ink tray with a shutter according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a view showing a state in which the shutter of FIG. 1 is fully opened.
It is an A section enlarged view.

4 is a view showing a state in which the shutter of FIG. 1 is fully closed;
It is an A section enlarged view.

FIG. 5 is a perspective view of an ink tray with a shutter according to another embodiment of the present invention.

6 is an enlarged cross-sectional view showing a state where the shutter of FIG. 5 is fully opened.

7 is an enlarged cross-sectional view showing a state where the shutter of FIG. 5 is fully closed.

FIG. 8 is a partial cross-sectional side view of an ink tray with a shutter according to still another embodiment of the present invention.

FIG. 9 is a plan view showing a state in which a conventional ink tray is installed in an ink fountain.

10 is an enlarged cross-sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Ink source roller 2 Ink fountain 4 Ink seal member 7 Non-slip 8 Handle 9 Ink key 11 Ink tray 11b Both side plates 11d Opening 12 Shutter 13 Shutter guide 14 Shutter holding mechanism 14a Screw 30, 40 Ink tray with shutter 31 Ink tray main body 31a Bottom plate 31b Side plate 31d Opening 31e Positioning pin hole 32 Shutter 33 Shutter guide 33a Guide rod 33b Guide pin 34 Shutter holding mechanism 34b Hook 34c Holding pin 35 Positioning member 35a Bracket 35b Positioning pin 36 Lid

Claims (4)

[Claims] 1. An ink supply device in which a removable ink tray is installed in an ink fountain of a printing press, wherein an ink outlet opening provided in a front end surface of an ink tray body is provided with a shutter guide and a shutter holding mechanism. An ink tray with a shutter, characterized in that a shutter for opening and closing the opening is suspended, and an ink seal member that is in close contact with the outer periphery of the ink source roller is attached to the tip of both side plates of the ink tray body. 2. The ink tray with a shutter according to claim 1, wherein at least a surface of the shutter of the ink tray is coated with an ink adhesion preventing layer. 3. The ink tray main body is provided with a positioning member attached to the ink fountain, and a positioning portion for engaging with the positioning member is provided in the ink tray main body.
Ink tray with shutter described. 4. The ink tray with a shutter according to claim 3, further comprising a lid for contacting an outer peripheral edge of an upper portion of the ink tray body with a surface of the shutter when the shutter of the ink tray is closed. .