JPH0450118Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a printing press in which the gap between the ink font roller and the blade is adjusted by moving the free end of the blade. The present invention relates to an ink fountain adjusting device for a printing press that can adjust the overall ink supply amount supplied to a printing section and the individual ink supply amount for each area.

[Conventional technology]

Conventionally, there are known ink supply amount adjusting devices for printing presses, such as one that adjusts the overall ink supply amount and one that adjusts the ink supply amount for each doctor knife area.

In the former case, it is difficult to adjust the ink supply amount for each area, and in the latter case, it is difficult to quickly adjust the overall ink supply amount, and because the ink supply amount is adjusted digitally, There is a drawback that the minimum fine adjustment amount tends to be large due to problems with the responsiveness of the solenoid, etc., and there are problems such as high precision fine adjustment is difficult.

The invention also includes an ink fountain roller and a blade attached to the ink fountain body parallel to the ink fountain roller, and a blade formed between the free end surface of the blade and the ink fountain roller. An example of an ink fountain adjustment device for a printing press that adjusts the gap by moving the blade and adjusts the amount of ink supplied to the printing section through the gap is the ink fountain adjusting device of Utility Model Publication No.
There is a device shown in Publication No. 290, but this device had a problem in that the gap could not be adjusted with high precision.

[The problem that the idea aims to solve]

Therefore, the present invention solves the above-mentioned conventional problems, makes it easy to adjust the overall ink supply amount and the ink supply amount of each adjustment block, and allows fine adjustment with high precision. Moreover, the purpose is to make it possible to uniformly and easily adjust the overall ink supply amount at the time of initial setting.

[Means to solve the problem]

An ink fountain adjustment device for a printing press according to the present invention includes an ink fountain roller disposed in the vertical direction and a blade attached to an ink fountain body parallel to the ink fountain roller. A gap formed between the free end surface of the ink fountain roller and the ink font roller is adjusted by moving the blade, and an amount of ink supplied to the printing unit through this gap is adjusted. In an ink fountain adjustment device of a printing press, the ink fountains are arranged in parallel in the vertical direction while coming into contact with the back surface of a block fixed to the back surface near the free end of the blade, have a wedge shape that is inclined in the horizontal direction, and are movable in the horizontal direction. a plurality of possible adjustment blocks; a plurality of screw-type adjustment means for individually supporting each of the adjustment blocks and screwing onto the ink fountain body to individually move each of the adjustment blocks in the lateral direction; and each of the above adjustments. The blade comes into contact with the back of the block and is rotatably installed on the ink fountain body, and the free end of the blade is moved forward and backward as a whole with respect to the ink fountain roller through the adjustment block and the block. It is equipped with a rotary eccentric adjustment means for adjusting the width of the gap.

[Function and Examples]

An embodiment of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 1 and 2, ink 1a
The ink fountain 1 in which the ink fountain is stored is formed long along the axial direction (that is, the vertical direction) of the ink fountain roller 2 disposed in the vertical direction.
The main body 3 is integrally formed with a horizontally long block 3a and left and right side blocks 3b, 3b fixed to both ends of the horizontally long block 3a in the longitudinal direction. A blade 4 is disposed parallel to the ink font roller 2 and is fixed at one end (the upper right end in FIG. 1) of the oblong block 3a of the ink fountain body 3, and at the other end. (lower left end in FIG. 1) is formed at the free end 4a, and between the surface of the free end 4a and the outer peripheral surface of the ink font roller 2, ink is applied to the printing section (not shown). A gap a for supply is formed. The gap a is adjusted to be wider or narrower by moving the free end 4a of the blade 4 toward and away from the ink font roller 2, and the ink is supplied to the printing section through the gap a. The total ink supply amount can be adjusted.

Further, a block 5 is fixed to the back surface near the free end 4a of the blade 4 in the vertical direction (perpendicular to the plane of the paper in FIG. 1), and a block 5 is slidably abutted on the back surface of the block 5. In this state, a plurality of adjustment blocks 6, 6, . . . are supported by respective screw type adjustment means 7, respectively. Therefore, by individually adjusting each screw type adjusting means 7, each adjusting block 6 can be individually moved in the direction A (ie, in the lateral direction) in FIG. 1.

Further, a rotary eccentric adjustment means 8 is mounted on the main body 3 so as to be rotatably operable in contact with the back surface (inclined surface 6a to be described later) of each of the adjustment blocks 6, 6, . The rotary eccentric adjustment means 8 is formed so that the adjustment blocks 6, 6, . . . can be moved and adjusted as a whole in the direction B in FIG. 6
The free end 4a of the blade 4 is moved forward and backward with respect to the ink font roller 2 through the block 5 and the width of the gap a to adjust the width of the gap a. The overall ink supply amount is adjusted accordingly.

Further, each of the adjustment blocks 6, 6, . It is formed into a wedge shape with an inclined surface (back surface) 6a.

Here, the screw type adjustment means 7 provided in each of the adjustment blocks 6, 6, . are doing.

As shown in the figure, the adjustment screw 7a and the adjustment block 6 are inserted into the extension portion 6b which is formed in the shape of the upper part of the adjustment block 6 from the front side, and pass through the hole 6c.
A pair of retaining rings 7c pass through the lower end of the adjustment screw 7a to prevent movement in the axial direction and are rotatably connected. With this configuration, when each adjustment screw 7a is rotated by each knob 7b, each adjustment block 6, 6, . . . can be moved forward and backward separately.

Further, as the rotary eccentric adjustment means 8, a first
Those formed as shown in FIGS. 5 to 5, respectively, are used. That is, in the case shown in FIGS. 1 to 4, the eccentric shaft 8a is rotatably installed between the side blocks 3b, 3b of the main body 3,
One end thereof penetrates one side block 3b and projects outward, and a knob 8b is fixed to the projecting end.
By gripping and rotating the knob 8b, the adjustment blocks 6, 6, .
is formed so as to be entirely movable in the B direction.

Here, the eccentric shaft 8a shown in FIGS. 1 and 2
The large diameter eccentric portion 8d, which is eccentric by a predetermined amount with respect to the small diameter shaft portion 8c supported by the side blocks 3b, 3b, is brought into contact with the inclined surface 6a of each of the adjustment blocks 6, 6, . ing. On the other hand, the third
4, a plurality of shaft portions 8c are formed coaxially and with a large diameter at regular intervals in the axial direction, and the shaft portions 8c, 8c, . . . are formed with a small diameter. The eccentric portions 8d, 8d, ... of the above-mentioned adjustment blocks 6,
6,..., and each of the above-mentioned shaft portions 8c, 8
c, . It is in contact with surface 6a).

Moreover, the one shown in FIG. 5 has a notch 8e on one side.
is provided to form an eccentric shaft 8f, and the shaft 8f is installed between the side blocks 3b, 3b so as to be rotatable and in contact with the flat plate portion 3c, and each adjusting block 6, 6, . . . It is brought into contact with the inclined surface (back surface) 6a of. In addition, each of the above adjustment blocks 6,
The axis of the rotary eccentric adjustment means 8 for moving the 6,... in the direction of the arrow B is not limited to the embodiments shown in FIGS. The configuration is arbitrary as long as it allows the adjustment blocks 6, 6, . . . to be moved simultaneously in the direction B by the same amount.

Further, the rotary eccentric adjustment means 8 is provided with a rotation stopper 10 so as to be held at an arbitrary rotated position. As this rotation stopper 10, as shown in FIG. 2, the eccentric shaft 8 is attached to the side block 3b.
A screw hole 3e is provided which communicates approximately perpendicularly with the shaft hole 3d into which the screws a and 8f are inserted.
The stopper 10a is pressed against the eccentric shafts 8a, 8f by spring force by screwing the stopper c, and the rotation of the eccentric shafts 8a, 8f is prevented by the frictional force. .

In the above configuration, when the rotary eccentricity adjustment means 8 is rotated by the knob 8b, each adjustment block 6, 6, etc. moves simultaneously and by the same amount in the direction B as a whole within the range of the eccentricity amount. The amount of movement is transmitted to the blade 4 via the block 5, and the blade 4 moves in the direction B, adjusting the gap a between it and the ink font roller 2 to be wider or narrower, and to completely close the gap. It can also be occluded.

Therefore, at the start of printing, the entire blade 4 is moved to the ink font tension roller 2 at the same time.
The total amount of ink supplied to the printing section can be quickly adjusted by moving in the direction to widen the gap a between the two at the same time, or conversely to narrow the gap a between the two at the same time. In addition, in this embodiment, since the rotation stopper 10 is attached to the rotary eccentricity adjustment means 8, the eccentric shaft 8a can be automatically locked by simply rotating the knob 8b. The conventionally complicated operations such as locking the device are no longer necessary, and the operability is greatly improved.

In addition, the knobs 7b in each screw type adjustment means 7
When the adjusting screw 7a is rotated in one direction, the adjusting screw 7a moves downward in FIG. 2, so that the wedge-shaped adjusting block 6 is lowered and pushed between the block 5 and the rotary eccentric adjusting means 8. Then,
Due to the wedge action of the adjusting block 6, the blade 4 is pressed and moved toward the upper left in FIG. 1 via the block 5, thereby adjusting the gap a to be narrower. Conversely, when the knob 7b is rotated in the other direction, the adjustment block 6 rises upward in FIG. 2, and the elastic blade 4 returns to its original position, thereby widening the gap a. be adjusted.

[Effect of the invention] As explained above, since the ink fountain adjusting device of the printing press according to the present invention is constructed, each adjusting block 6,
The width of the gap a between the blade 4 and the ink font tension roller 2 can be adjusted as a whole by moving the blades 6, . It is possible to quickly adjust the total amount of ink supplied to the printing unit through the ink cartridge, and at the time of initial setting, the entire blade 4 is operated simultaneously and uniformly with respect to the ink font tension roller 2 to close the gap a between the two. This will make it easier to widen the area.

In addition, by moving each adjustment block 6, 6, . . . individually using the screw type adjustment means 7 to adjust the width of the gap a for each area, the width of the gap a for each area can be adjusted. The amount of ink supplied can be easily adjusted. Furthermore, since the amount of rotation of the screw type adjusting means 7 and the amount of movement of the blade 4 are directly proportional, the gap a
Adjustments can be made with high precision and fine adjustments are possible.

Furthermore, each of the adjusting blocks 6, 6, .
Due to the wedge action of the inclined surface 6a, the blade 4
Since the members 5, 6, and 8 are always in contact with each other, there is no room for mechanical wobbling, and this allows the width of the gap a in each area to be finely adjusted. The amount of ink supplied to each area can be adjusted extremely minutely, thereby achieving highly accurate adjustment of the amount of ink supplied.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional side view showing an embodiment of the ink fountain adjustment device for a printing press according to the present invention, Fig. 2 is a partial front view of the same embodiment with the blade removed, and Fig. 3 4 is a partial longitudinal sectional side view showing a modified example of the rotary eccentric adjustment means in the same embodiment, FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIG. It is a partial vertical side view which showed the other modification of a means. 2... Ink fountain roller, 3... Ink fountain body, 4... Blade, 4a... Free end of blade, 5... Block, 6... Adjustment block, 6
a... Inclined surface (back side of adjustment block), 7... Screw type adjustment means, 8... Rotary eccentric adjustment means, a...
...Gap between the ink font roller and the blade.

Claims (1)

[Claims for Utility Model Registration] An ink fountain roller arranged in the vertical direction and a blade attached to the ink fountain body parallel to the ink fountain roller, the surface of the free end of the blade An ink fountain of a printing press that adjusts the amount of ink supplied to a printing unit through this gap by adjusting the gap formed between the ink fountain roller and the ink fountain roller by moving the blade. In the adjustment device, a plurality of adjustments are arranged in parallel in the vertical direction and in contact with the back surface of a block fixed to the back surface near the free end of the blade, have a wedge shape that is inclined in the horizontal direction, and are movable in the horizontal direction. a plurality of screw-type adjustment means for individually supporting each of the adjustment blocks and for individually moving each of the adjustment blocks in the lateral direction by screwing onto the ink fountain body; The blade is in contact with the ink fountain body and rotatably installed on the ink fountain body, and the width of the gap is adjusted by moving the free end of the blade forward and backward as a whole with respect to the ink fountain roller through the adjustment block and the block. An ink fountain adjusting device for a printing press, characterized in that it is equipped with a rotary eccentricity adjusting means.