JP2003231240A - Blade adjusting device of ink fountain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blade adjusting device of an ink fountain capable of certainly performing restoration of each blade and capable of always properly adjusting gap between a fountain roller and the blade to eliminate printing irregularity. <P>SOLUTION: The gap G between the edge 21h of the blade 21 attached to a fountain stand 14, and the outer peripheral surface 13a of the fountain roller 13 is adjusted to adjust the supply amount of the ink stored in an ink sump 19. A bracket 25 is attached to the back surface of the blade 21 while a push- pull rod 27 is connected to the bracket 25 through a cotter pin 26. A steel ball 28 is housed in the base end of the push-pull rod 27 and locked with the cam groove 36a formed to the outer peripheral surface of a cam member 36. The push-pull rod 27 is forcibly moved forwardly and rearwardly through the steel ball 28 by rotating the cam member 36 to properly perform the fine adjustment of the gap G. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink fountain blade adjusting device used in a printing press.

[0002]

2. Description of the Related Art In an offset printing machine, as shown in FIG. 11, an ink fountain 51 is arranged above and below a printing paper P, respectively. A plate cylinder 54 is connected to a fountain roller 52 constituting the ink fountain 51 via a plurality of rollers 53, and a printing paper P is supplied between a pair of rubber cylinders 55 provided for both plate cylinders 54. It is supposed to be done. Then, as the fountain roller 52 rotates, the ink in the ink fountain 51 is transferred to each roller 5.
It is supplied to the plate cylinder 54 via the outer peripheral surfaces of 2, 53, and is transferred from the plate cylinder 54 to the paper P via the rubber cylinder 55.

In the printing mode described above, printing on the paper P is performed with a predetermined width in the direction of the rotation axis of the pot roller 52. Usually, the ink transfer area at each position within the set width varies depending on the pattern of printing. Therefore, if the ink supply amount is the same at each position in the rotation axis direction of the fountain roller 52, print unevenness occurs on the printed paper P. In order to solve this, as shown in FIG. 12, a blade 57 is provided so as to close the ink delivery port 20 between the front end edge of the fountain base 56 forming the ink fountain 51 and the outer peripheral surface of the fountain roller 52. The blade 57 adjusts the amount of ink attached to the outer peripheral surface of the fountain roller 52. This blade 57
The crucible roller 52 is divided into, for example, 10 to 30 portions in the rotation axis direction, and can be independently tilted by the space adjusting mechanism 58. And the pot roller 5
2 by adjusting the gap formed between the blade 57 and
Prevents uneven printing.

The gap adjusting mechanism 58 includes an operating rod 59 which is in contact with the back surface of the blade 57 and the operating rod 5.
And a cam member 60 that pushes the base end surface of 9 in the axial direction. The cam member 60 is supported by a support shaft 61. Then, the operation of the geared motor 62 causes the cam member 60 to rotate forward and backward at a predetermined position via the gear transmission mechanism 63. Cam surface 6 of cam member 60
When 0a is advanced, the blade 57 is tilted toward the fountain roller 52 side through the actuating rod 59 against the elastic force of the blade 57 itself, and the gap of the ink delivery port 20 is reduced. On the contrary, when the cam surface 60a of the cam member 60 is retracted, the blade 57 is restored by the stored force, and the interval is increased.

[0005]

[Problems to be Solved by the Invention] Conventional ink fountain 51
Has a plurality of blades 57 independently formed,
The blades 57 are in contact with each other. For this reason, if maintenance and inspection work and cleaning work are not performed regularly, there is a risk that the blade 57 may not restore due to the elastic restoring force due to the ink that has adhered to the blade 57 and has stuck. The reason why the blades 57 are not restored is that it is difficult to clean the side surface of each blade 57 on the side of the pot roller 52, so that the inks adhered and cured across the adjacent blades 57 are independent of each other. This is to prevent movement.

If the restoration of the blade 57 is incomplete, the gap formed between the pot roller 52 and the blade 57 will be improperly adjusted, and uneven printing will occur. An object of the present invention is to eliminate the problems existing in the above-mentioned conventional technology, to reliably restore each blade, always properly adjust the gap between the pot roller and the blade, and eliminate printing unevenness. An object of the present invention is to provide an ink fountain blade adjusting device.

[0007]

In order to solve the above problems, the invention according to claim 1 is to install a pot roller and a pot stand on a frame, and to attach a bottom plate attached to the upper surface of the pot stand and the pot roller. A plurality of blades that form an ink pool between the outer peripheral surface of the fountain roller and the ink supply port corresponding to the ink supply port formed between the outer peripheral surface of the fountain roller and the tip edge of the bottom plate. Attached to the table, the gap formed by the pot roller and the blade is formed so that each blade can be restored to a predetermined opening by its own elastic restoring force or an elastic member separately arranged, and with respect to the pot table The gist is that a position adjusting mechanism for independently adjusting the position of each of the blades is provided, and the longitudinal movement of each blade by the position adjusting mechanism is forcibly performed.

According to a second aspect of the present invention, in the first aspect, the blade is attached obliquely upward with respect to the front end portion of the crucible base, and the blade and the bottom plate are attached to the upper end surface of each blade. The gist is that the tip edge of the sealing member for sealing is elastically pressed.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the above, the position adjusting mechanism is formed so as to be capable of rotating in the forward and reverse directions at a predetermined position of the crucible, and to be inclined with respect to the outer peripheral surface of the cam member in the circumferential direction. The gist of the present invention is that it is composed of a cam groove and a push-pull rod whose base end is engaged with the cam groove and whose tip is connected to the blade.

A fourth aspect of the present invention is based on the third aspect, wherein a steel ball engaged with the cam groove is engaged with a base end portion of the push-pull rod. According to a fifth aspect of the present invention, in the third or fourth aspect, the push-pull rod is loosely inserted in a guide groove formed in the crucible base so as to be slightly movable in the vertical direction, and the tip of the push-pull rod is relative to the blade. The push-pull rod is rotatably connected in the vertical direction by a connecting pin, and the base end upper surface of the push-pull rod is pressed downward by an urging member interposed between the upper surface and the lower surface of the bottom plate, so that the steel ball and the cam groove are separated. The point is that the backlash is removed.

According to a sixth aspect of the present invention, in any one of the third to fifth aspects, the cam groove of the cam member is discontinuously formed. According to a seventh aspect of the present invention, in any one of the third to fifth aspects, the cam member is screwed to the male screw portion of a support shaft having a male screw portion supported at a predetermined position of the pot base. However, when the cam member is rotated by the gear mechanism, the cam member reciprocates back and forth.

According to an eighth aspect of the present invention, in any one of the third to fifth aspects, the cam member has a male screw portion supported at a predetermined position of the crucible base, and the male screw of the rotary operation shaft. The gist of the invention is that the cam member is screwed to the portion and is reciprocally moved forward or backward while the rotation operation shaft is normally or reversely rotated without rotating.

A ninth aspect of the present invention is based on the first aspect, wherein the blade is interposed between the upper surface of the crucible base and the lower surface of the bottom plate.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1 showing a side section of the printing machine, an ink fountain 12 is mounted between a pair of left and right frames 11 (only the frame 11 on the back side of the paper in the direction orthogonal to the paper surface is shown in FIG. 1). The fountain roller 13 constituting the ink fountain 12 is rotatably supported at a predetermined position between the frames 11. A crucible base 14 is mounted in proximity to the crucible roller 13 by a support shaft 15 and a bearing portion 16 supported by the frame 11 so as to be vertically tiltable. Side plates 17 (only the back side of the paper in FIG. 1 is shown) are fixed to the left and right sides of the crucible base 14 by bolts. An ink reservoir 19 is a concave space formed by the upper surface 14a of the fountain base 14, the outer peripheral surface 13a of the fountain roller 13, and the pair of side plates 17. An arcuate seal surface 17a formed at the front end of the side plate 17 is in sliding contact with the outer peripheral surface 13a of the pot roller 13. Then, the ink in the ink reservoir 19 adheres to the outer peripheral surface 13a of the fountain roller 13 from an ink delivery port 20 formed between the front edge of the upper surface 14a of the fountain base 14 and the outer peripheral surface 13a of the fountain roller 13. It is designed to be guided downward.

A blade 21 for adjusting the amount of ink attached to the outer peripheral surface 13a of the fountain roller 13 is formed by forming a gap G in the front end of the fountain base 14 so as to close the ink delivery port 20. It is installed. Through holes 21a are formed at a plurality of positions in the blade 21 as shown in FIG. A mounting base 14b is integrally formed with the pot base 14. Bolts 22 as tightening members are passed through the through holes 21a formed in the blade 21 into screw holes 14c formed at a plurality of locations on the mounting base 14b, and the bolts 22 are screwed into the screw holes 14c of the mounting base 14b. By doing so, the blade 21 is attached at a predetermined position.

The blade 21 has a plurality of blade elements 21b (not shown in this embodiment, 16 points). As shown in FIG. 2, each blade element 21b is formed integrally with the base end connecting portion 21d without being separated by forming a plurality of slits 21c from the upper end surface of the blade 21 to the vicinity of the lower end portion. A thin-walled hinge portion 21e is formed at the base end portion of each blade element 21b so that each blade element 21b can be elastically deformed by an external force by the hinge portion 21e.
The upper end face 21f and the front side face 21 of each blade element 21b
A boundary portion with g, that is, an edge portion 21h approaches the outer peripheral surface 13a of the pot roller 13 to form the gap G.
Examples of the material of the blade 21 include metals such as iron-based alloys such as stainless steel and aluminum-based alloys.

A bottom plate 23 is provided on the upper surface 14a of the pot base 14.
Is supported. The bottom plate 23 is fixed to the upper surface 14a by screws 24. The pot roller 1 of the bottom plate 23
The tip portion on the 3 side is a seal plate portion 23a as a seal member that is thinly cut so as to be elastically deformable in the vertical direction. The tip edge of the seal plate portion 23a is elastically pressed against the upper end surface 21f of the blade 21 to seal the blade 21 and the bottom plate 23 and prevent ink from entering. A bracket 25 is fixed to the back surface of the blade element 21b of the blade 21 by welding or bolts. The tip of a push-pull rod 27 is connected to the bracket 25 via a split pin 26 as a connecting pin. The push-pull rod 27 has a distal end portion integrally formed with a mortar portion 27a to be inserted into the forked portion of the bracket 25. A hole 27b penetrating the split pin 26 is formed in the groove portion 27a.

The push-pull rod 27 is a pot stand 14.
A guide groove 14d formed on the upper surface 14a of the above is accommodated so as to be capable of reciprocating slidably upward. The guide groove 14d regulates the position of the push-pull rod 27 so as not to move in the horizontal direction orthogonal to the paper surface of FIG. A slight gap is formed between the upper surface of the push-pull rod 27 and the lower surface of the bottom plate 23 to allow fine movement of the push-pull rod 27 in the vertical direction. An engagement recess 27c is formed on the lower surface of the base end of the push-pull rod 27. The upper half of the steel ball 28 engaged with a cam groove 36a of a cam member 36 described later is engaged with the engaging recess 27c. A coil spring 29 as an urging member for urging the push-pull rod 27 downward is interposed between the base end upper surface of the push-pull rod 27 and the engagement recess 23b formed in the bottom plate 23. .

Next, a cam mechanism 31 for adjusting the gap G of the ink delivery port 20 by moving the steel ball 28 in the front-rear direction and moving the blade elements 21b back and forth will be described.
The push-pull rod 27 is provided at the rear end of the pot 14.
The screw shaft 14e provided in parallel with the central axis of the support shaft 32
A male screw portion 32a formed on the outer periphery of the rear end portion is screwed. A set bolt 33 is screwed into the rear end of the pot 14 toward the outer peripheral surface of the male screw portion 32a. A resin spacer 34 is interposed between the set bolt 33 and the male screw portion 32a. The support shaft 32 is fixed at a predetermined position by pressing the spacer 34 against the male screw portion 32a with the set bolt 33.

A cam member 36 is supported on the tip of the support shaft 32 via thrust bearings 35, 35 so as to be rotatable forward and backward at a predetermined position. The thrust bearing 35 located on the tip side of the support shaft 32 is held by a bolt 37 screwed onto the tip of the support shaft 32. A cam groove 36a is formed on the outer peripheral surface of the cam member 36 having a cylindrical shape with a slight inclination angle in the circumferential direction. The cam member 36 is formed with a hole 36b for penetrating the tip end portion of the support shaft 32.

A gear 36c is provided on the outer peripheral surface of the cam member 36.
Are integrally formed. A hexagonal hole 32b capable of engaging with a hexagonal wrench is formed on the outer end surface of the support shaft 32. Then, with the set bolt 33 tightened, a hexagon wrench is engaged with the hexagonal hole 32b of the support shaft 32, and the support shaft 32 is rotated to adjust the position of the cam member 36 in the front-rear direction. I am trying to do it. The blade 2 pushed by the push-pull rod 27 by this adjustment
The value of the gap G between 1 and the outer peripheral surface 13a of the pot roller 13 is set to zero.

Next, the electric drive mechanism 41 for rotationally driving the gear 36c of the cam member 36 will be described. The drive mechanism 41 includes a geared motor 42 fixed at a predetermined position of the pot base 14, and the geared motor 42.
And a first gear 43 fitted to the rotating shaft of the. or,
The drive mechanism 41 is rotatably supported by a support shaft 44 supported at a predetermined position of the crucible base 14, and the first gear 4
The second gear 45 meshed with the gear 3 is provided. Further, the drive mechanism 41 is constituted by a third gear 46 which is integrally formed with the second gear 45 so as to be rotatable in synchronization therewith and which is meshed with a gear 36c of the cam member 36.
The first gear 43, the support shaft 44, the second gear 45 and the third
A gear mechanism is configured by the gear 46 and the like.

In this embodiment, the push-pull rod 27, the support shaft 32, the cam member 36, the drive mechanism 41, etc. constitute a position adjusting mechanism for the blade 21. Next, the operation of the ink fountain configured as described above will be described.

In FIG. 1, the cam groove 36 of the cam member 36 is shown.
To set the origin position of a, the following operation is performed. FIG. 5 is a plan view in which the cam groove 36a of the cam member 36 is developed. In this plan view, by rotating the cam member 36, the steel ball 28 is positioned at a position corresponding to the end 36d of the cam groove 36a on the side closer to the blade 21.
In this state, the support shaft 32 shown in FIG. 1 is rotated by a hexagon wrench to move the support shaft 32 forward. As the support shaft 32 advances, the cam member 36, the steel ball 28, and the push-pull rod 27 advance, and the blade 21 is pushed while being elastically deformed. Then, the edge portion 21 of the blade 21
The h is brought into contact with the outer peripheral surface 13a of the pot roller 13. In this state, the gap G between the blade 21 and the pot roller 13 is zero, and the end 36d of the cam groove 36a of the cam member 36 is held at the original position.

In this state, the geared motor 42 of the drive mechanism 41 is operated to rotate the first gear 43, the second gear 45, the third gear 46 and the gear 36c in the reverse direction, and the cam member 36 is rotated.
Rotate. As shown in FIGS. 4 and 5, the cam groove 36a of the cam member 36 is inclined so as to come closer to the blade 21 toward the end portion 36d side (upper side in FIG. 5), so that the cam member 36 is centered on its central axis. Rotate in the direction of the arrow. Then, the cam groove 36a forcibly retracts the push-pull rod 27, and the push-pull rod 27 also forcibly retracts the blade 21.
Along with this, the gap G is adjusted to a desired opening degree, and the ink supply amount increases.

On the contrary, when it is desired to reduce the ink supply amount, the push-pull rod 27 can be pushed toward the blade 21 by rotating the geared motor 42 in the forward direction. Therefore, the gap G becomes smaller. As a result, the edge portion 21h of the blade element 21b approaches the outer peripheral surface 13a of the pot roller 13 and the desired gap G
Is formed.

At the time of printing, the pot roller 13 is shown in FIG.
The ink in the ink reservoir 19 is attached in a thin film form to the outer peripheral surface 13a of the fountain roller 13 at the ink outlet 20 and is supplied to the plate cylinder via a kneading roller (not shown). Printing is performed by transferring the ink from the plate cylinder to the paper through the rubber cylinder.

Next, the effects of the ink fountain constructed as described above will be listed together with the construction. (1) In the above embodiment, the blade 21 and the cam member 36 are connected by the push-pull rod 27. Therefore, the forward or backward movement of each blade element 21b can be reliably performed, and the adjustment work of the gap G can be reliably and easily performed.

(2) In the above embodiment, the cam groove 36a is formed on the outer peripheral surface of the cam member 36. Further, the push-pull rod 27 is connected to the cam groove 36a via the steel ball 28. Therefore, the movement of the steel ball 28 in the front-rear direction due to the rotation of the cam member 36 can be smoothly performed.

(3) In the above embodiment, since the push-pull rod 27 is accommodated in the guide groove 14d of the crucible base 14 so as to be finely movable in the vertical direction, the vertical direction of the split pin 26 when the position of the blade 21 is adjusted. It is possible to allow the movement and perform a stable adjustment work of the gap G.

(4) In the above embodiment, the end 36d of the cam groove 36a is formed and the cam groove 36a is discontinuous. Therefore, with the steel ball 28 positioned at the end portion 36d, the support shaft 32 is rotated to move the cam member 36 forward so that the gap G between the blade 21 and the pot roller 13 is reduced to zero. The origin position of the groove 36a can be easily adjusted.

(5) In the above embodiment, the coil spring 29 is used.
Thus, the steel ball 28 is pressed against the cam groove 36a. Therefore, the backlash of the steel ball 28 in the cam groove 36a can be prevented.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the blades 21 are housed between the upper surface 14a of the crucible base 14 and the lower surface of the bottom plate 23 so as to be reciprocally movable in the front-rear direction. This blade 21 does not have elastic restoring force by itself. As an elastic member that elastically restores the blade 21, a leaf spring 47 attached to the crucible base 14 with a bolt is used. This leaf spring 4
7, the blade 21 is always rearward, that is, the gap G
Is urged to increase. A bracket 25 is fixed to the lower surface of the tip of the blade 21, and a push-pull rod 27 is attached to the bracket 25 via a pin 26.
Are connected in parallel with the blade 21. Also, the support shaft 3
2 and the cam member 36 are integrally configured, and a gear 36c of the cam member 36 meshes with a gear 49 formed on an operation shaft 48 having a knob 48a for manual operation.

A small diameter portion 32c is provided at the base end of the support shaft 32.
A bolt 50 for adjusting the origin position is relatively rotatably fitted to the small diameter portion 32c, and a screw portion on the outer periphery of the bolt 50 is screwed into a screw hole 14e of the pot base 14. A thrust bearing 35 is interposed between the tip of the bolt 50 and the large diameter portion of the support shaft 32. The blade 21 can be moved back and forth by adjusting the screwing position of the bolt 50 in the front-rear direction.

An opening degree display panel 38 having a scale (not shown) for displaying the adjustment amount of the gap G is detachably fitted to the outer end portion of the small diameter portion 32c of the support shaft 32.
Further, on the rear end surface of the crucible base 14, the gap G of each blade 21 is formed.
A display plate 39 displaying a pointer serving as a reference for displaying the opening degree of is attached. Then, the opening display panel 38
The steel ball 28 is made to correspond to the end portion 36d of the cam member 36 (see FIG. 5) in a state in which is removed, and the bolt 50 is rotated to set the origin position where the gap G becomes zero. After that, the opening degree display board 38 is attached to the small diameter portion 32c, and zero of the scale of the opening degree display board 38 is aligned with the pointer of the display plate 39.

In this embodiment, members having the same functions as those in the above embodiment are designated by the same reference numerals. In this embodiment, when the cam member 36 is normally or reversely rotated via the gear 49 and the gear 36c by the forward or reverse rotation operation of the operation shaft 48, the push-pull rod 2
The blade 21 is moved forward or backward via the 7.
In this embodiment as well, the blade 21 is forcibly moved rearward, so that the gap G between the blade 21 and the pot roller 13 can be adjusted reliably and properly. The opening of the gap G can be known by the opening display panel 38 and the display plate 39.

The above embodiment can be modified and embodied as follows. As shown in FIG. 7, a cam follower 27d integrally formed with the push-pull rod 27 may be engaged with the cam groove 36a of the cam member 36.

In this case, since the steel ball 28 can be omitted, the number of parts can be reduced and the cost can be reduced. As shown in FIG. 8, the cam groove 36a of the cam member 36 may be formed in an inverted trapezoidal cross section, and an inverted trapezoidal cam follower 27d may be used instead of the steel ball 28.

In this case, backlash in the front-rear direction can be effectively prevented. As shown in FIG. 9, a male screw portion 32d is formed at the tip of the support shaft 32, and a female screw portion 36e of the cam member 36 is screwed into the male screw portion 32d. The cam groove 36a is formed parallel to the circumferential direction. The driving gear that meshes with the gear 36c is elongated in the axial direction.

In this example, when the gear 36c of the cam member 36 is rotated forward or backward, the cam member 36 is moved forward or backward while rotating, and the push-pull rod 27 is moved forward or backward through the steel ball 28. And the gap G between the blade 21 and the pot roller 13 is adjusted.

As shown in FIG. 10, the rotation operation shaft 48
A male screw portion 48b is formed at the tip of the
The female screw portion 36e of the cam member 36 is screwed into b. Instead of the cam groove 36a, a hemispherical engagement recess 36f for engaging the steel ball 28 is formed.

In this another example, when the rotary operation shaft 48 is normally or reversely rotated at a predetermined position, the cam member 36 is moved forward or backward without rotating. Then, the push-pull rod 27 is moved forward or backward via the steel ball 28, and the gap G between the blade 21 and the pot roller 13 is adjusted.

In this alternative example, the origin positions of the cam member 36 and the steel ball 28 can be easily set and the number of parts can be reduced only by bringing the blade 21 into contact with the outer peripheral surface 13a of the pot roller 13. You can .

In the embodiment shown in FIG. 6, although not shown, the connecting point between the blade 21 and the push-pull rod 27 may be changed to the rear end portion of the blade 21. Further, a recess for accommodating the steel ball 28 may be provided on the lower surface of the rear end portion of the blade 21 to accommodate the steel ball 28.

In place of the steel ball 28, a spherical or cubic cam follower made of various materials may be used.

[0046]

As described above in detail, according to the present invention, each blade can be surely restored, and the gap between the pot roller and the blade can always be properly adjusted to eliminate uneven printing. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an ink fountain showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a blade and a cam mechanism.

FIG. 3 is a side view of the vicinity of the blade.

FIG. 4 is a plan view of a blade and a cam mechanism.

FIG. 5 is a plan view showing a developed state of the cam member.

FIG. 6 is a cross-sectional view of an ink fountain showing another embodiment of the present invention.

FIG. 7 is a front view showing another example of the cam mechanism.

FIG. 8 is a front view showing another example of the cam mechanism.

FIG. 9 is a cross-sectional view showing another example of the cam mechanism.

FIG. 10 is a sectional view showing another example of the cam mechanism.

FIG. 11 is an explanatory diagram showing a schematic configuration of a printing machine.

FIG. 12 is a cross-sectional view showing a usage state of a conventional ink fountain.

[Explanation of symbols]

G ... Gap, 11 ... Frame, 13 ... Roller, 13a ... Outer peripheral surface, 14 ... Vessel base, 14a ... Top surface, 14d ... Guide groove, 32 ... Support shaft, 21 ... Blade, 21f ... Upper end surface,
23 ... bottom plate, 27 ... push-pull rod, 28 ... steel ball,
32a, 32d, 48b ... Male screw portion, 36 ... Cam member,
36a ... Cam groove, 48 ... Rotating operation shaft.

Claims (9)

[Claims] 1. A fountain roller and a fountain base are mounted on a frame, an ink reservoir is formed between a bottom plate attached to the upper surface of the fountain base and the outer peripheral surface of the fountain roller, and the outer peripheral surface of the fountain roller and the bottom plate are formed. A plurality of blades for adjusting the ink supply amount corresponding to the ink supply port formed between the tip edge is attached to the fountain base, and a gap formed by the fountain roller and the blade is attached to each blade by itself. Position adjusting mechanism for independently adjusting the position of each blade with respect to the pot base, the position adjusting mechanism being formed so as to be able to restore to a predetermined opening degree by the elastic restoring force of An ink fountain blade adjustment device that forces each blade to move back and forth. 2. The blade according to claim 1, wherein the blade is attached obliquely upward with respect to the front end of the crucible base,
A blade adjusting device for an ink fountain in which a tip edge of a sealing member for sealing the blade and the bottom plate is elastically pressed against the upper end surface of each blade. 3. The position adjusting mechanism according to claim 1, wherein the position adjusting mechanism includes a cam member arranged so as to rotate forward and backward at a predetermined position of the crucible and a circumference of the cam member with respect to an outer peripheral surface thereof. A blade adjusting device for an ink fountain, which comprises a cam groove formed so as to be inclined with respect to a direction and a push-pull rod having a base end portion engaged with the cam groove and having a tip connected to the blade. 4. The blade adjustment device for an ink fountain according to claim 3, wherein a steel ball engaged with the cam groove is engaged with a base end portion of the push-pull rod. 5. The push-pull rod according to claim 3 or 4, wherein the push-pull rod is loosely inserted in a guide groove formed in the crucible base so as to be slightly movable in the vertical direction, and the tip of the push-pull rod is vertically moved by a connecting pin with respect to the blade. Is rotatably connected in the direction, and the upper surface of the base of the push-pull rod is
An ink fountain blade adjusting device which is pressed downward by an urging member interposed between the upper surface and the lower surface of the bottom plate to remove the backlash between the steel ball and the cam groove. 6. The method according to any one of claims 3 to 5,
An ink fountain blade adjusting device in which a cam groove of the cam member is formed discontinuously. 7. The method according to any one of claims 3 to 5,
The cam member is screwed onto the male screw portion of the support shaft having a male screw portion supported at a predetermined position of the pot base, and when the cam member is rotated by the gear mechanism, the cam member reciprocates back and forth. Ink fountain blade adjustment device that is being moved. 8. The method according to claim 3, wherein
The cam member is screwed to the male screw portion of the rotary operation shaft having a male screw portion supported at a predetermined position of the pot base,
A blade adjusting device for an ink fountain, wherein the cam member is reciprocally moved forward or backward while the rotation operation shaft is rotated normally or reversely. 9. The blade adjusting device for an ink fountain according to claim 1, wherein the blade is interposed between an upper surface of the fountain base and a lower surface of the bottom plate.