JP2805682B2 - Ink supply device - 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 supply device for a printing press, and more particularly to an ink supply device in which the rotation speed of an ink ejection roller increases or decreases in a predetermined relationship as the printing operation speed increases or decreases. A groove formed by an outer peripheral surface, an inclined bottom member having a leading edge close to the outer peripheral surface, and a side plate member partitioning both sides of a V-shaped groove formed by the outer peripheral surface and the inclined bottom member of the ink supply roller. Ink is stored in the shape space, and with the rotation of the ink discharging roller, the stored ink is led out from the gap between the outer peripheral surface of the ink discharging roller and the leading edge of the inclined bottom member at the outer peripheral surface of the roller. The present invention relates to an ink supply device called a so-called ink fountain device.

[0002]

2. Description of the Related Art As a so-called ink fountain device as described above in the prior art, there is, for example, one disclosed in Japanese Patent Publication No. 1-49624 and Japanese Patent Publication No. 7-45244. Japanese Patent Publication No. 1-49624 discloses the following two types. One is that, in the above-described ink supply device, a thin steel plate is provided on the inclined surface of the ink storage means such that a lower end thereof is at a predetermined distance from an outer peripheral surface of a roller forming the ink storage means. On the back side, there is provided adjusting means for approaching the lower end of the thin steel sheet toward the outer peripheral surface of the roller, and by this adjusting means, the distance between the lower end of the thin steel sheet and the outer peripheral surface of the roller is predetermined. It changes for each section in the axial direction of the roller, and adjusts the amount of ink derived from the gap by the rotation of the roller according to the area of the printing image on the printing plate corresponding to each section, It is a format that is supplied to.

Another one is that, in the above-mentioned ink supply device, the inclined surface of the ink storing means is movable along the inclination while being divided at a predetermined width in an axial direction of a roller forming the ink storing means. A plurality of moving members are provided adjacent to each other, and the upper surfaces of the plurality of moving members are provided so as to be simultaneously covered with a thin steel plate except for a lower tip side thereof. Adjusting means for individually moving the outer peripheral surface with respect to the outer peripheral surface of the roller, the adjusting means changes the distance between the lower end of the moving member and the outer peripheral surface of the roller for each moving member, and rotates the roller. Is adjusted in accordance with the area of the printed image on the printing plate corresponding to the width of each moving member, and supplied to the printing plate.

[0004] Japanese Patent Publication No. 7-45244 discloses that in the above-described ink supply apparatus, the inclined surface of the ink storing means or a plate member provided on the inclined surface is used.
A thin steel plate is provided so that its tip is at a predetermined distance from the outer peripheral surface of the roller forming the ink storing means, and the roller is rotated to guide the thin steel sheet all over the entire width of the ink fountain from the gap at the distance, and further downstream. The ink on the outer peripheral surface is leveled by a leveling means so that the amount of ink on the outer peripheral surface becomes substantially uniform in any direction in the axial direction of the roller for each rotation of the roller regardless of the area of the printed image on the plate. It is like supplying it to a printing plate.

[0005]

In recent years, inks have been diversified, and inks exhibiting an intermediate fluidity between conventional hard inks having low fluidity and so-called loose inks having high fluidity have been developed. In conjunction with the diversification of the above, there has been a demand for a printing apparatus which supplies the ink having the intermediate fluidity by the ink supply means as shown in the above-mentioned prior art.

[0006] However, the ink supply means disclosed in the above-mentioned prior art is provided with a printing plate between an outer peripheral surface of a roller forming an ink storing means and a lower end portion of a member provided close to the outer peripheral surface. A gap is provided to guide the ink to be supplied to the printing machine, in accordance with the image portion on the printing plate or in the image portion on the printing plate, regardless of whether the printing press is operating or stopped. Since the ink is open regardless of the above, when the ink having the intermediate fluidity is used for the ink supply means, there is a problem to be solved that the ink drips from the gap when the printing press is stopped. Was.

[0007]

Means for Solving the Problems An ink supply device of the present invention is a printing machine for printing by supplying ink to the plate surface, the rotational speed of Tokoro accordance decrease the operating speed of the printing press
An ink fountain roller that increases or decreases in a fixed relationship, a base portion that is located on the side of the ink fountain roller, and has a slope whose lower end is close to the outer peripheral surface of the ink fountain roller, and an outer circumferential surface and an inclined surface of the ink fountain roller And an ink storage means comprising side walls partitioning both sides of a groove formed by the ink jet head, and ink for opening and closing an ink discharge port which is a gap between an outer peripheral surface of the ink discharging roller and a lower end of an inclined surface adjacent thereto. An opening / closing member provided on the base portion so as to be movable in the direction of contact and separation with respect to the outer peripheral surface of the ink supply roller; Moving means, connected to the opening / closing member moving means, operating the opening / closing member moving means in relation to the operation of the printing press;
Start and move position in relation to press speed
Switching control means for controlling the position .

The opening and closing member is provided when the printing press is stopped.
The ink closest to the outer peripheral surface of the
Position that substantially closes the feed outlet, for example,
The distance from the outer peripheral surface of the ink fountain roller is 0.0 to 0.5 mm.
1 mm position and operating speed determined by the printing press
Separated from the outer surface of the ink delivery roller when it reaches
The ink outlet to an amount exceeding the amount required for printing.
The distance between the position where the ink is ready to be sent out and the position
The ink is sent out and opened by the opening and closing member moving means.
The spout is in at each rotation speed of the ink delivery roller.
So that the key does not hang down
You.

In the above-described ink supply apparatus, the opening / closing control means controls the opening / closing member moving means to increase or decrease the speed of the printing press from a start to a desired operating speed and a deceleration from the desired operating speed to a stop. The member is moved toward and away from the outer peripheral surface of the ink discharging roller. When the printing press is stopped, the opening / closing member that is closest to the outer peripheral surface of the ink discharge roller and occupies the position that substantially closes the ink discharge port reaches a desired operating speed after the printing press starts. In the process, the roller is appropriately moved in a direction away from the outer peripheral surface of the roller, and at least at a desired operating speed, the ink discharge port is in a predetermined opening state exceeding a minimum necessary size for discharging a printable amount of ink. To The movement is controlled by an appropriate change pattern based on, for example, the operating speed of the printing press, for example, the following change pattern.

The opening / closing member is capable of printing from a position where the ink discharge port is substantially closed when the printing press is started or when the speed is increased to reach a predetermined operating speed equal to or lower than a desired operating speed. A pattern that immediately moves to a predetermined position where the opening exceeds the minimum size required for sending out the amount of ink, and is maintained in the opening state thereafter. From the position at which the ink delivery port is substantially closed from the time when the predetermined operating speed equal to or lower than the desired operating speed is reached to the other operating speed exceeding the predetermined operating speed and equal to or lower than the desired operating speed. A pattern that moves so as to gradually increase the opening to a predetermined position that opens beyond the minimum size necessary to send out the printable amount of ink, and is then maintained in that open state

(C) The opening / closing member is moved from the time when the printing press is started or when the speed is increased to reach a predetermined operating speed equal to or lower than the desired operating speed. The ink outlet is moved so as to open at predetermined operating speeds sequentially determined before reaching the speed, and a printable amount of ink is sent from a position where the ink outlet is substantially closed. The opening degree is gradually increased to a predetermined position where the opening exceeds the minimum necessary size, and thereafter the pattern is maintained in the opening state. A predetermined position where the ink outlet is opened beyond the minimum size necessary for sending a printable amount of ink at the start of deceleration or when the operating printing press is decelerated to the predetermined operating speed. To a position that is substantially closed. Pattern to move immediately

E The opening / closing member operates at a speed lower than the predetermined operating speed from the time when the printing press operating at the desired operating speed starts to decelerate or when the speed is reduced to reach a predetermined operating speed equal to or higher than zero. From a predetermined position opened beyond the minimum size necessary to discharge a printable amount of ink from a predetermined position to a substantially closed position while reaching another predetermined operating speed of zero or more. Pattern that moves to gradually reduce the opening and then remains closed

F The opening / closing member is operated at a speed lower than the predetermined operating speed from the time when the printing press operating at the desired operating speed starts to decelerate or when the speed is reduced to reach a predetermined operating speed equal to or higher than zero. It is necessary to move the ink discharge port so as to close the ink discharge port at every predetermined predetermined operation speed until reaching another predetermined operation speed of zero or more, and to discharge the printable amount of ink at the ink discharge port. A pattern in which the degree of opening is gradually reduced from a predetermined position opened beyond the minimum size to a position substantially closed, and thereafter maintained in a closed state

In any case, in the process of opening or closing the ink discharge port, the ink discharge port is coupled with the rotation speed of the ink discharge roller so that the used ink does not drool from the ink discharge port. I will When the ink discharge port is opened in the operating state of the printing press, the ink adhering to the outer peripheral surface of the rotating ink discharging roller is passed through the ink discharge port and is guided. The ink guided by the outer peripheral surface of the ink fountain roller is caused to reach a portion where the outer peripheral surface of the ink fountain roller and the outer peripheral surface of the adjacent roller on the downstream side are rotated by rotation of the ink fountain roller.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An ink supply device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a so-called keyless inking type printing machine to which an ink supply device according to an embodiment of the present invention is applied.
In the printing press, an ink reservoir roller 1, an ink fountain roller 10 provided with a so-called ink fountain device adjacent thereto is provided.
0, uneven roller 110, intermediate roller 120, measuring roller 130, setting rollers 140, 140 and plate cylinder 2
00 are arranged such that their outer peripheral surfaces are adjacent to or in contact with each other in order from the upstream side to the downstream side of the ink supply, and each roller except the ink fountain roller 100 has its opposing peripheral surfaces displaced in the same direction and at the same speed. To rotate.

Then, for the measuring roller 130,
The doctor means 150 which contacts the outer peripheral surface is provided, and the contact position thereof is located downstream of the contact position with the intermediate roller 120 in the rotation direction of the measuring roller 130.
It is upstream from the contact position with the wearing roller 140. The doctor means 150 includes a doctor blade 151 and a blade holder 152 supporting the doctor blade 151 as shown in FIGS. 1, 4 and 5, for example. It is provided so as to be selectively switchable between a contact state and a non-contact state. Then, at the time of printing operation, the doctor blade 151 contacts the outer peripheral surface of the measuring roller 130 over its entire length, and scrapes excess ink from the outer peripheral surface of the measuring roller 130.

The ink discharge roller 100 has a first gap 105 (FIG. 3 and FIG.
(See FIG. 3)
(In the direction indicated by the arrow in FIG. 3), and its rotational peripheral speed changes according to the change in the rotational peripheral speed of the plate cylinder 200, but is lower than the rotational peripheral speed of the plate cylinder 200 and is 1/30 of the rotational peripheral speed of the plate cylinder 200. To 1/100.

The uneven roller 110 is provided with the first gap 1
It is arranged adjacent to the ink supply roller 100 such that the outer peripheral surfaces thereof face each other via a second gap 115 (see FIGS. 4 and 5) smaller than the second gap 115. Uneven roller 110
For example, as shown in FIG.
A large number of projections 111 divided by 2 are formed, so that ink adhering to the outer peripheral surface of the ink discharging roller 100 can be easily received and received. Protrusion 111
Are provided at a pitch of, for example, 0.5 to 5.0 mm,
The shape of the top is not limited to the square shown in FIG. 6, but may be a triangle, a circle, or the like. In addition, the outer peripheral surface of the uneven roller 110 may be replaced with a regular uneven surface as shown in FIG.

The intermediate roller 120 in contact with the uneven roller 110 is provided with a rubber surface layer having a surface hardness of, for example, 20 to 40 degrees (Shore A). As shown in FIG. 7, on the outer peripheral surface of the measuring roller 130 in contact with the intermediate roller 120, a large number of fine concave portions capable of storing a predetermined amount of ink are formed in a uniform distribution. The concave groups are formed by forming microcavities 133 in a base material 132 forming an outer peripheral surface layer 131 of the measuring roller 130. Specifically, for example, a synthetic resin of the base material 132 has a diameter of 5 to It is formed by mixing and dispersing 300 μm micro hollow bodies. The outer peripheral surface layer 131 has a surface hardness of, for example, 70 to 100 degrees (Shore A).

The outer peripheral surface layer 131 in which the micro cavities 133 are mixed and dispersed in a uniform distribution, the micro cavities 133 are successively opened to the surface even if the micro cavities 133 are worn out by the ink scraping action by the doctor means 150, Since the distribution of the fine concave portions on the surface of the layer 131 does not substantially change, the amount of ink stored on the surface of the measuring roller 130 does not substantially change.

The recesses on the outer peripheral surface of the measuring roller 130 are replaced with micro-cavities 133 of uniform distribution in the outer peripheral surface layer 131, and regularly arranged depressions (cells) as shown in FIG.
134 and a bank 135 surrounding it. Such a depression 134 is, for example, a metal, a synthetic resin,
Rolling, laser processing, corrosion, etc. are performed on materials such as tungsten carbide, and 80 lines / cm to 200 lines /
It is formed with a density of cm. The application roller 140 is a roller having a surface hardness of, for example, rubber having a surface hardness of, for example, 20 to 40 degrees (Shore A). The doctor roller 150 removes excess ink from the outer peripheral surface of the measuring roller. A substantially uniform amount of ink is supplied over the entire length, and the ink is supplied to the printing plate of the plate cylinder 200.

As shown in FIG. 3, the ink storing means 1 comprises:
A base portion 11 forming a forward-downward slope toward the lower side of the outer peripheral surface of the ink discharge roller 100 rotated in a direction indicated by an arrow (counterclockwise) in FIG. 3 by a driving unit (not shown); It is constituted by side walls 12, 12 that partition both sides of a V-shaped cross-sectional groove formed by the inclined surface of the base 11 and the outer peripheral surface of the ink discharging roller 100. The upper surface of the front half portion of the base portion 11 is lower than the upper surface of the latter half portion with a step, forming an inclined surface having a forward and downward slope toward the ink discharging roller 100, and a rear end portion of the base portion 11. Is provided with a space in which an adjusting portion A (described later) is provided.

A bottom plate 13 attached to the upper surface of the rear half of the base portion 11 covers the adjusting portion mounting space, and is parallel to the inclined surface of the base portion 11 at a distance of the above-described step difference and forward. The lowermost edge of the bottom plate 13 extends and faces the outer peripheral surface of the ink fountain roller 100 with a small gap, and the gap between the lowermost edge of the bottom plate 13 and the outer peripheral surface of the fountain roller 100 is: It is an ink outlet.

Between the inclined surface of the base 11 and the bottom plate 13, a large number is divided in the axial direction (perpendicular to the plane of FIG. 1) of the single ink supply adjusting plate 2 or the ink supply roller 100. Are provided so as to be movable in the direction of contact and separation with respect to the ink discharging roller 100, and the front edge of the upper surface is provided so as to protrude from the inclined lowermost edge of the bottom plate 13. The divided ink supply adjusting plates 2, 2... Are provided in contact with each other so as not to leak ink, and both side surfaces of the single ink supply adjusting plate 2 and the divided ink Adjustment plate 2, 2,
The outer side surface of .. is in contact with the inner side surfaces of the side wall portions 12 and 12 so that ink does not leak.

A member having an appropriate width in the axial direction of the ink fountain roller 100 and contacting the outer peripheral surface of the ink fountain roller 100 so as not to leak ink is formed by the side wall 1.
2 and 12 are fixed to the inner surfaces of both members, and the outer side surfaces of the divided ink supply adjusting plates 2, 2... The sides are in contact so that there is no ink leakage. Projection front end and side wall 1 of bottom plate 13 and ink discharge adjusting plate 2
Ink is stored in a groove having a V-shaped cross section formed between 2, 2 and the outer peripheral surface of the ink discharging roller 100.

Single or divided ink discharge adjusting plate 2
The position of the bottom plate is adjusted by an adjusting unit A described below provided on the ink fountain adjusting plate 2 (or each divided ink fountain adjusting plate 2) so as to come into contact with and separate from the outer peripheral surface of the ink fountain roller 100. The opening of the ink discharge port, which is the gap between the inclined lowermost edge of 13 and the outer peripheral surface of the ink discharging roller 100, is adjusted by the top edge of the upper surface of the ink discharging adjusting plate 2. That is, the gap between the top edge of the ink ejection adjusting plate 2 and the outer peripheral surface of the ink ejection roller 100, that is, the opening degree of the first gap 105 controls the amount of ink withdrawn.

When the ink supply adjusting plate 2 is divided into many parts, each divided ink supply adjusting plate is individually slidable, and the opening degree of the first gap 105 may be different for each divided section. it can. The size of each divided section is, for example, in a printing machine capable of printing the width of four pages of newspaper, the size of two pages of newspaper, the size of one page, the size of １ ／ page, 1/4
The size of the division can be determined as appropriate, such as the size of a page or the size of a 1/8 page.

An adjusting section A provided on the ink discharge adjusting plate 2
Will be described. First, as shown in FIG. 3, a cutout space is formed in an intermediate portion of the ink discharge adjusting plate 2 (or each divided ink discharge adjusting plate 2), and the cutout space retreats to the ink discharge adjusting plate 2. Means for applying a directional force are provided. That is, between the projection attached to the bracket erected on the inclined surface of the base 11 at a position corresponding to the front end face of the cutout space and the projection attached to the rear end face of the cutout space. The compression coil spring 34 is opened, and the spring force of the compression coil spring 34 applies a backward force to the ink discharge adjusting plate 2.

In the rear half of the base portion 11, a guide hole penetrating from the front wall surface of the adjusting portion mounting space to the step is provided with the ink discharging adjusting plate 2 (or each of the divided ink discharging adjusting plates 2, 2,...).
..), The hemispherical tip of the push rod 31 slidably inserted into the guide hole is provided in the advance / retreat direction of the ink discharge adjusting plate, and the ink discharge adjusting plate 2 (or each divided ink discharge). The rear end of the push rod 31 which comes into contact with the rear end face of the adjustment plate 2) and protrudes into the adjustment part mounting space has a cam driven roller 3 which comes into contact with the cam surface of the end face cam member 33 (described later).
2 is attached rotatably about an axis perpendicular to the push rod 31.

A cam support shaft and an intermediate gear shaft are installed in the adjusting portion mounting space in parallel with and below the push rod 31. An end cam member 33 is rotatably mounted on the cam support shaft, and a first intermediate gear 35a is mounted on the intermediate gear shaft.
And the second intermediate gear 35b are supported so as to rotate integrally. The motor shaft of the pulse motor 36 attached to the rear wall of the base 11 protrudes into the adjustment unit attachment space in parallel with the push rod 31, and a drive gear 35c meshing with the first intermediate gear 35a is attached. An operation knob 37 is attached to the outer end of the motor shaft.

On the front surface of the end cam member 33, that is, on the surface on the side opposite to the push rod 31, a cam driven roller 32 of the push rod 31 to which a force in the backward direction is applied by the spring force of the compression coil spring 34 comes into contact. A surface (ring-shaped inclined surface) is formed, and a second surface is formed on the outer periphery of the end face cam member 33.
A gear portion 35d that meshes with the intermediate gear 35b is formed. The cam surface is a ring-shaped inclined surface formed in an annular shape so that the cam follower roller 32 can come into contact with the rotation of the end surface cam member 33, and with the highest surface and the lowest surface adjacent to each other.

Then, a cam driven roller 3 is provided near the highest surface.
2 is in contact with the ink discharge adjusting plate 2 at the position where the ink discharge port is substantially closed (the first gap 105).
(The position at which the opening degree becomes 0.0 to 0.1 mm), and at the time when the cam driven roller 32 is in contact with the vicinity of the lowest surface, the ink discharge adjusting plate 2 fully opens the ink discharge port. Back to position.

The control of the adjusting unit A, that is, the pulse motor 36
Is provided in association with the main drive system MD of the printing press or the plate cylinder 200 driven by the main drive system MD, as shown in FIG. 2, and outputs a pulse signal proportional to the operation speed of the printing press. Pulse output means (rotary encoder 40 in the illustrated example), F / V converter 41, A / D converter 42,
Programmable read only memory (P-RO)
M) 43, a first register 44, a second register 45, a comparator 46, a subtractor 47, a pulse motor controller 48, a timing generation circuit 50, and an open / close control unit B configured to be connected to a pulse motor driver 60. Is to be performed.

The opening / closing control section B will be described with reference to FIG.
The A / D converter 42 is connected so as to output a voltage signal by converting the voltage into a corresponding voltage based on a pulse signal proportional to the operation speed of the printing press input from the A / D converter. A D-conversion operation instruction signal T1 is input, and is connected so that a digital data signal is output by A / D converting a voltage signal input from the F / V converter 41 for each input.

The P-ROM 43 stores the rotation amount data of the pulse motor 36 of the adjustment unit A for each address corresponding to digital data proportional to the operation speed of the printing press. The operation instruction signal T2 is input, and the A / D converter 42
Is connected so as to output the rotation amount data of the pulse motor 36 stored at the address specified by the digital data signal input from the controller.

The fact that the rotation amount data of the pulse motor 36 corresponds to the moving distance from the original stop position which is the substantially closed position of the ink discharge adjusting plate 2 can be easily understood from the configuration of the adjusting section A described above. Like. That is, the rotation amount data of the pulse motor 36 stored at each address is appropriately determined between the original stop position (closed position) and the fully open position of the ink discharge adjusting plate 2 when the first gap 105 is substantially closed. Corresponds to the distance from the original stop position (the size of the first gap 105).

Each pulse corresponding to each rotation speed of the ink fountain roller 100 between the zero speed of the stop of the rotation speed of the ink fountain roller 100 and the maximum operation speed corresponding to the operation speed of the printing press. The rotation amount data of the motor 36 (the size of the first gap 105) is stored.

The rotation amount data of the pulse motor 36 stored at each address indicates that the first gap 105 has a substantial value when the printing press is stopped until the printing press is started to reach a desired operating speed state. The opening required for the ink to be normally pulled out from the ink fountain roller 100 from the initial closed state, that is, an opening exceeding the minimum necessary size for sending out a printable amount of ink, and Between the time when the printing press in the desired operating speed state is decelerated and stopped, the first gap 105 is opened from exceeding the minimum size necessary for sending out a printable amount of ink. The ink discharge adjusting plate 2 is set so as to be able to move in various movement patterns so as to be in a substantially closed state when the printing press stops.

The first gap 105 corresponds to the rotation speed of the rotating ink discharging roller 100, including that the ink discharging roller 100 is substantially closed in a stopped state so that the used ink does not drool. In addition, at least the ink is kept from dripping. That is, the desired change pattern of the first gap 105 is that the used ink does not droop downward at each rotation speed of the ink discharge roller 100 that changes between zero speed (stop) and the desired operation speed. The condition should be satisfied.

The following are examples of various movement patterns of the ink discharge adjusting plate 2. a The ink discharge adjusting plate 2 can print from the position where the first gap 105 is substantially closed at the time of starting the printing press or when the speed is increased to reach a predetermined operating speed equal to or lower than the desired operating speed. A pattern that immediately moves to a predetermined position that opens beyond the minimum size required to send out the amount of ink, and is then maintained in that open state

B The ink discharge adjusting plate 2 exceeds the predetermined operating speed from the time when the printing press is started or when the speed is increased to reach a predetermined operating speed equal to or lower than the desired operating speed. The first gap 10 to reach another operating speed
5 is moved from a substantially closed position to a predetermined position where the opening exceeds a minimum size necessary for sending a printable amount of ink to a predetermined position, and thereafter the opening state is established. Patterns maintained

(C) The ink discharge adjusting plate 2 exceeds the predetermined operating speed from the time when the printing press is started or when the speed is increased to reach a predetermined operating speed equal to or lower than the desired operating speed. It moves so as to open the first gap 105 at every predetermined operating speed that is sequentially determined before reaching another operating speed, and the printable amount from the position where the first gap 105 is substantially closed. A pattern in which the opening is gradually increased to a predetermined position where the opening exceeds the minimum size required to send out the ink, and thereafter the opening is maintained.

D The first ink gap adjusting plate 2 is moved to the first gap 1 at the start of deceleration of the printing press operating at a desired operating speed or when the operating printing press is decelerated to a predetermined operating speed.
05 is a pattern that immediately moves from a predetermined position opened beyond a minimum size necessary for sending out an amount of ink that can be printed to a position substantially closed.

E The ink discharge adjusting plate 2 starts rotating at a desired operating speed from the time when the printing press starts to decelerate or when the speed is reduced to reach a predetermined operating speed equal to or higher than zero, and becomes lower than the predetermined operating speed. While reaching the other predetermined operating speed equal to or higher than the operating speed of zero, the first gap 105 is substantially separated from a predetermined position opened beyond a minimum size necessary for sending out a printable amount of ink. The pattern moves so that the opening gradually decreases to the close position, and then remains substantially closed.

F The ink discharge adjusting plate 2 starts moving at a desired operating speed from the time when the printing press starts to decelerate or when the speed is reduced to reach a predetermined operating speed equal to or higher than zero, and becomes lower than the predetermined operating speed. The ink is moved so as to close the first gap 105 at predetermined operating speeds that are sequentially determined until the operating speed reaches another predetermined operating speed that is equal to or higher than zero. The opening is gradually reduced from a predetermined position opened beyond a minimum size required for sending out the nozzle to a substantially closed position, and thereafter the pattern is maintained in a substantially closed state

The first register 44 receives the first latch operation instruction signal T3 from the timing generation circuit 50,
It is connected so as to latch the rotation amount data of the pulse motor 36 input from the P-ROM 43 for each input. The second register 45 includes the timing generation circuit 5
A second latch operation instructing signal T6 is input from 0, and the input is connected so that the rotation amount data of the pulse motor 36 latched in the first register 44 is fetched and latched at each input.

The comparator 46 receives the comparison operation instructing signal T4 from the timing generation circuit 50.
The rotation amount data latched in the first register 44 is fetched, and the rotation amount data latched in the second register 45 is fetched, and the two rotation amount data are compared. When there is a relationship, a magnitude relation signal is output to a subtractor 47 described later, and when both are equal, an equivalent signal is output to the timing generation circuit 50. The subtractor 47 includes a comparator 46
When the magnitude relation signal is input from the first register 44 and the second register 45, the rotation amount data latched by the first register 44 and the second register 45 are fetched, and the larger or smaller value of the two rotation quantity data is read in accordance with the magnitude relation signal. Is subtracted to output data of the difference.

The pulse motor controller 48 receives the data fetch operation instruction signal T from the timing generation circuit 50.
5 is input, and for each input, a magnitude relation signal is fetched from the comparator 46, and difference data is fetched from the subtractor 47. The driving rotation direction of the pulse motor is determined based on the magnitude relation signal from the comparator 46, and the driving rotation amount of the pulse motor is determined based on the difference data from the subtractor 47. It is connected so as to output a motor rotation drive signal.

The pulse motor driver 60 is connected to rotate the pulse motor 36 based on a pulse motor rotation drive signal from the pulse motor controller 48. The timing generation circuit 50 does not output the second latch operation instruction signal T6 and the data fetch operation instruction signal T5 when the equivalent signal is input from the comparator 46. Therefore, if the rotation amount data of the pulse motor 36 input to the first register 44 does not change, the rotation amount data already input and latched to the second register 44 remains unchanged.

When the ink ejection adjusting plate 2 is wide, the plurality of adjusting portions A are arranged at intervals in the width direction of the ink ejecting adjusting plate 2, and the plurality of adjusting portions A are opened and closed by the opening / closing control portion B. May be configured to perform simultaneous opening and closing control in synchronization. Further, in the case of the divided ink discharge adjusting plates 2, an adjusting unit A may be provided for each divided ink discharging adjusting plate, and the opening and closing control may be individually performed by the opening and closing control unit B.

Thus, the opening and closing movement amount can be made different for each of the divided ink discharge adjusting plates 2. When the opening and closing movement amount is different for each of the divided ink supply adjusting plates 2, the roller group of the ink supply system from the ink supply roller 100 to the application roller 140 is replaced with an appropriate number of rollers having a normal smooth outer peripheral surface. In addition, the outer peripheral surfaces of these rollers are provided so as to be sequentially in contact with each other (not shown). Gap 105
Is supplied to the printing plate for each width of each ink discharge adjusting plate 2 by making the size of the first gap 105 opened by each ink discharging adjusting plate 2 different. It is also possible to adjust the amount of ink.

The operation of the above-described ink supply device will be described. In the ink storing means 1, the ink stored in the groove having the V-shaped cross section adheres to the outer peripheral surface of the ink discharging roller 100, and when the ink discharging roller 100 rotates in the direction of the arrow (counterclockwise) in FIG. A first gap 105 whose opening is regulated by the top end edge of the top adjustment plate 2,
That is, based on the gap between the top edge of the ink ejection adjusting plate 2 and the outer peripheral surface of the ink ejection roller 100, a limited amount of ink is formed into a film and is sequentially drawn out by the outer peripheral surface of the ink ejection roller 100.

Then, the ink delivery amount is adjusted, that is, the top edge of the upper surface of the ink ejection adjusting plate 2 and the ink ejection roller 10 are adjusted.
When adjusting the opening degree of the first gap 105, which is the gap with the outer peripheral surface of 0, the pulse motor 36 is controlled by the opening / closing control unit B and is driven to rotate forward or backward by a predetermined amount of rotation. Then, the end face cam member 3 via the drive gear 35c, the first intermediate gear 35a, the second intermediate gear 35b, and the gear portion 35d.
3, the cam surface rotates.

At this time, since the spring force of the compression coil spring 34 for retracting the ink discharge adjusting plate 2 presses the cam driven roller 32 against the cam surface via the pressing rod 31, the cam driven roller 32, that is, the pressing rod 31 Moves back and forth according to the shape of the cam surface. The advance and retreat of the push rod 31 in the guide hole is the advance and retreat of the ink ejection adjusting plate 2 with which the hemispherical tip of the push rod 31 comes into contact. Move in the direction of approaching and separating from the ink discharge roller 100 during the interval.

Therefore, the opening and closing of the first gap 105, which is the gap between the top edge of the ink ejection adjusting plate 2 and the outer peripheral surface of the ink ejection roller 100, is adjusted. The shape of the cam surface is such that, for example, when the pulse motor 36 rotates in the normal direction, the ink discharge adjusting plate 2 advances, and the opening degree of the first gap 105 decreases. It retreats and the opening of the first gap 105 increases.

The control of the forward / reverse rotation of the pulse motor 36 by the opening / closing controller B will be described. First, the ink discharge adjusting plate 2 is moved forward most and an appropriate ink is stored in a groove having a V-shaped cross section of the ink storing means 1 in a state where the first gap 105 is closed. When you start the printing press in this state,
With the operation of the main drive system MD, the respective rollers of the plate cylinder 200 and the ink supply system rotate, and during the rotation, that is, during the operation of the printing press, in response to the operation of the main drive system MD, The pulse output means 40 outputs a pulse signal to the F / V converter 41 at a cycle inversely proportional to the operation speed of the main drive system MD.

On the other hand, from the timing generation circuit 50, A
/ D conversion operation instruction signal T1, data output operation instruction signal T
2, first latch operation instruction signal T3, comparison operation instruction signal T
4. The data capture operation instruction signal T5 and the second latch operation instruction signal T6 are sequentially output. However, when an equivalent signal is input from the comparator 46 to the timing generation circuit 50 as described later, the data capture operation instruction signal T5 and the second latch operation instruction signal T6 are not output.

The F / V converter 41 converts the input pulse signal into a corresponding DC voltage and outputs it to the A / D converter 41. When the A / D conversion operation instruction signal T1 is input from the timing generation circuit 50, the A / D converter 41 converts the DC voltage input from the F / V converter 41 into digital data corresponding to the DC voltage. / D conversion and PR
Output to OM43. The digital data changes in relation to the operation speed of the main drive system MD, that is, the rotation speed of the ink fountain roller 100.

The P-ROM 43 has a timing generation circuit 5
When the data output operation instruction signal T2 is input from 0, A
The rotation amount data of the pulse motor 36 stored at the address specified by the digital data input from the / D converter 41 is output to the first register 44.

When the first latch operation instruction signal T 3 is input from the timing generation circuit 50, the first register 44 receives the pulse motor 36 input from the P-ROM 43.
Is latched. The second register 45
From the timing generation circuit 50, the second latch operation instruction signal T
When 6 is input, the rotation amount data of the pulse motor 36 latched in the first register 44 is fetched and latched.

Here, first, the printing machine, ie, the main drive system MD
The case where the speed is increased from the start of the vehicle will be described. The rotation amount data (hereinafter referred to as data A) of the pulse motor 36 latched in the first register 44 and the second register 4
The rotation amount data (hereinafter, referred to as data B) of the pulse motor 36 latched at 5 is the origin / zero (data A = 0, data A = 0, when the main drive system MD is stopped, that is, when the operating speed of the printing press is zero). B = 0), and the rotation amount data of the pulse motor 36 at the address corresponding to the digital data when the operating speed is zero is also set to the origin / zero.

When the main drive system MD is started and the speed is increased, the first
Each time the latch operation instruction signal T3 is input to the first register 44, the rotation amount data A of the pulse motor 36 at the address corresponding to the digital data of the operating speed at that time is latched in the first register 44. And the comparator 4
In step 6, the data A and the second register 45 are already stopped.
Is compared with the data B (= 0) which is latched.

Here, the following process is performed for the first gap 1
05 depends on the change pattern described above. As long as the rotation amount data A latched in the first register 44 after the start is equal to the data B (= 0), the data capture operation instruction signal T5 and the second latch operation instruction signal T6 are not output from the timing generation circuit 50, The pulse motor controller 48 does not operate. That is, the pulse motor controller 48 does not output a pulse motor rotation drive command. As it is, the main drive system MD is rotated at an increased speed, and the above-described comparison process is sequentially repeated.

Comparison process at start, or main drive system MD
When the rotation amount data Aa latched in the first register 44 is data Aa> data B (= 0) in the comparison process at the time when the speed is increased to the predetermined speed, the subtractor 47 The comparison signal, that is, the magnitude relation signal (data Aa> data B), the data Aa from the first register 44 and the data B from the second register 45 are input, respectively, based on the magnitude relation signal (data Aa> data B). Data B is subtracted from data Aa, and the difference data signal (data Aa-B) is output.

The pulse motor controller 48 receives the data fetch operation instruction signal T from the timing generation circuit 50.
5 is input, and the magnitude relation signal (data A
a> Data B) and a difference data signal (Data Aa-B) from the subtracter 47. Then, the driving rotation direction of the pulse motor is determined based on the magnitude relation signal from the comparator 46. That is, since data Aa> data B, it is determined in the reverse rotation direction, and the subtractor 47
The driving rotation amount of the pulse motor is determined based on the difference data signal (data Aa-B). Then, it outputs a pulse motor rotation drive command based on the two determinations.

If the first gap 105 is fully opened immediately after the pulse motor is driven, the end cam member 3
3 is equivalent to approximately one rotation, and the first gap 1
If it is a gradual or stepwise increase of 05, the amount of partial rotation of the end cam member 33 according to each pattern is obtained. Then, the second
The register 45 receives the second latch operation instruction signal T6 from the timing generation circuit 50, and
And latches the data Aa latched as the data B.

When the next first latch operation instructing signal T3 is inputted to the first register 44, the pulse motor 3 of the address corresponding to the digital data of the operating speed at that time is inputted.
6 is latched. Then, the comparator 46 compares the data Ab with the data B already latched in the second register 45, that is, the data Aa.
If data Ab = data Aa (B), the data capture operation instruction signal T5 and the second latch operation instruction signal T6 are not output from the timing generation circuit 50, and as a result, the pulse motor 36 does not operate.

If data Ab> data Aa (B),
The subtractor 47 outputs the comparison signal from the comparator 46, that is, the magnitude relation signal (data Ab> data Aa) to the first register 4
4 and the data Ab from the second register 45.
a is input, and data Aa is subtracted from data Ab based on a magnitude relation signal (data Ab> data Aa).
The difference data signal (data Ab-Aa) is output.

The pulse motor controller 48 receives the data fetch operation instruction signal T from the timing generation circuit 50.
5 is input, and the magnitude relation signal (data A
b> Data Aa) and the difference data signal (Data Ab-Aa) from the subtracter 47. Then, the driving rotation direction of the pulse motor is determined based on the magnitude relation signal from the comparator 46. That is, data Ab> data A
Since it is a, it is determined in the reverse rotation direction, and at the same time, the drive rotation amount of the pulse motor is determined based on the difference data signal (data Ab-Aa) from the subtractor 47. And
A pulse motor rotation drive command is output based on the two determinations. Subsequently, the second register 45 receives the second latch operation instruction signal T6 from the timing generation circuit 50, takes in the data Ab latched in the first register 44 as data B, and latches it.

The digital data output from the A / D converter 42 changes with the speed increase of the main drive system MD, and despite the fact that the address of the P-ROM 43 indicated by the digital data sequentially changes. , This sequentially changing PR
If the rotation amount data of the pulse motor 36 stored in each address of the OM 43 is the same, the P-ROM 4
In the first register 44, the data Am latched by the input of a certain first latch operation instruction signal T3 and the next first latch operation instruction signal T3 based on the rotation amount data of the pulse motor 36 stored in It becomes equal to the data An latched at the input. In this case, data Am is latched in the second register 45 as data B.

Then, the result of comparison by the comparator 46 is data An = data Am (B), and an equivalent signal thereof is input to the timing generation circuit 50. The signal T5 and the second latch operation instruction signal T6 are not output. Accordingly, neither the latch operation of taking in the rotation amount data of the pulse motor 36 in the second register 45 nor the judging operation of the driving rotation direction of the pulse motor 36 and the driving rotation amount of the pulse motor 36 in the pulse motor controller 48 are performed. That is, the pulse motor controller 48 does not output a pulse motor rotation drive command.

Some of the above-described controls are singly or sequentially or alternately combined, and are repeated in chronological order during the speed increase of the main drive system MD.

Term or

Following the control process described in the item, the minimum size required for sending out an amount of ink that can print the first gap 105 until the predetermined operation speed equal to or lower than the desired operation speed is reached. Open beyond.

The P-ROM 4 indicated by the digital data output from the A / D converter 42 when the operating speed of the main drive system MD is higher than the predetermined speed.
The same rotation amount data of the pulse motor 36 is stored in each address of No. 3. By doing so, while operating at an operating speed exceeding the predetermined speed, the P-ROM
The rotation amount data of the pulse motor 36 input to the first register 44 does not fluctuate based on the rotation amount data of the pulse motor 36 stored in 43. Therefore, during operation at an operation speed exceeding the predetermined speed, the opening of the first gap 105 is kept in an opening state exceeding the minimum size necessary for sending out the printable amount of ink. Can be maintained.

Next, a case where the operating main drive system MD is decelerated and stopped will be described. When the stop operation of the printing press starts, the operating speed decreases, and the first latch operation instruction signal T
3 is input to the first register 44, the rotation amount data A of the pulse motor 36 at the address corresponding to the digital data of the operating speed at that time is stored in the first register 44.
Latched.

Then, the comparator 46 compares the data A with the data B latched in the second register 45 during operation at the operation speed before the start of deceleration. Here, the following process differs depending on the desired change pattern of the first gap 105, similarly when the speed is increased from the start of the printing press.

As long as the rotation amount data A latched in the first register 44 after the start of the deceleration is equal to the data B, the data fetch operation instruction signal T5 and the second latch operation instruction signal T6
Is not output from the timing generation circuit 50, and the pulse motor controller 48 does not operate. That is, the pulse motor controller 48 does not output a pulse motor rotation drive command. Main drive system MD as it is
Is rotated at a reduced speed, and the above-described comparison process is sequentially performed.

In this comparison process, if the rotation amount data Ap latched in the first register 44 is data B> data Ap, the subtractor 47 outputs a comparison signal from the comparator 46, that is, a magnitude relation signal (data B> Data Ap) is
Data Ap is input from the first register 44, and data B is input from the second register 45, and the data Ap to the data Ap are output based on the magnitude relation signal (data B> data Ap).
, And outputs the difference data signal (data B-Ap).

The pulse motor controller 48 receives the data fetch operation instruction signal T from the timing generation circuit 50.
5 is input and the magnitude relation signal (data B
> Data Ap) and the difference data signal (Data B-Ap) from the subtractor 47. Then, the driving rotation direction of the pulse motor is determined based on the magnitude relation signal from the comparator 46. That is, since the data B> the data Ap, it is determined that the rotation is in the forward rotation direction.
The driving rotation amount of the pulse motor is determined based on the difference data signal (data B-Ap). Then, it outputs a pulse motor rotation drive command based on the two determinations.

Subsequently, the second register 45 receives the second latch operation instruction signal T6 from the timing generation circuit 50, takes in the data Ap latched in the first register 44 as data B, and latches it. If the first gap 105 is immediately fully closed, the drive rotation amount of the pulse motor becomes a rotation amount corresponding to substantially one rotation of the end face cam member 33, and the first gap 105 is gradually or stepwise reduced. If small, the amount of partial rotation of the end cam member 33 according to each pattern is obtained.

When the next first latch operation instructing signal T3 is inputted to the first register 44, the pulse motor 3 of the address corresponding to the digital data of the operating speed at that time is inputted.
6 is latched. Then, the comparator 46 compares the data Aq with the data B already latched in the second register 45, that is, the data Ap.

If data Aq = data Ap (B),
The data capture operation command signal T5 and the second latch operation command signal T6 are not output from the timing generation circuit 50,
As a result, the pulse motor 36 does not operate. Data Ap
If (B)> data Aq, the subtractor 47
6, a comparison signal, that is, a magnitude relation signal (data Ap> data Aq), a data Aq from the first register 44, and a data Ap from the second register 45, respectively, are converted into a magnitude relation signal (data Ap> data Aq). Data Aq is subtracted from data Ap based on the difference, and a difference data signal (data Ap-Aq) is output.

The pulse motor controller 48 receives the data fetch operation instruction signal T from the timing generation circuit 50.
5 is input, and the magnitude relation signal (data A
p> data Aq) and the difference data signal (data Ap-Aq) from the subtractor 47. Then, the driving rotation direction of the pulse motor is determined based on the magnitude relation signal from the comparator 46. That is, data Ap> data A
Since it is q, determination is made in the forward rotation direction, and the drive rotation amount of the pulse motor is also determined based on the difference data signal (data Ap-Aq) from the subtractor 47. And
A pulse motor rotation drive command is output based on the two determinations. Then, the second register 45 receives the second latch operation instruction signal T6 from the timing generation circuit 50,
The data Aq latched in the first register 44 is latched as data B.

The digital data output from the A / D converter 42 changes with the deceleration of the main drive system MD. Although the address of the P-ROM 43 indicated by the digital data sequentially changes, This sequentially changing PR
When the rotation amount data of the pulse motor 36 stored in each address of the OM 43 is the same, the P-ROM 3
4, the data Ar latched by the input of a certain first latch operation instruction signal T3 and the input of the next first latch operation instruction signal T3 in the first register 44 based on the rotation amount data of the pulse motor 36 stored in A latched by
is equal to s. In this case, data Ar is latched as data B in the second register 45.

Then, the result of comparison by the comparator 46 is data As = data Ar, and an equivalent signal thereof is input to the timing generation circuit 50.
The data capture operation instruction signal T5 from 0 and the second latch operation instruction signal T6 are not output. Therefore, the latch operation of taking in the rotation amount data of the pulse motor 36 in the second register 45 is also performed by the pulse motor controller 4.
In step 8, the drive rotation direction of the pulse motor 36 and the drive rotation amount of the pulse motor 36 are not determined.
That is, the pulse motor controller 48 does not output a pulse motor rotation drive command.

Some of the above-described controls are repeated chronologically during the deceleration of the main drive system MD, singly or sequentially or alternately combined.

Item or

By following the control progress described in the section, the first clearance 1 is not changed until the predetermined operating speed equals or exceeds the operating speed of zero.
Substantially block 05

When the operating speed of the main drive system MD is lower than the predetermined speed, the P-ROM indicated by the digital data output from the A / D converter 42 indicates the operating speed.
(0) is stored in each address 43 as rotation amount data of the pulse motor 36. By doing this,
While operating at an operating speed less than the predetermined speed,
The rotation amount data of the pulse motor 36 input to the first register 44 does not change based on the rotation amount data of the pulse motor 36 stored in the P-ROM 43. Therefore, the first gap 105 can be maintained in a substantially closed state during operation at an operation speed less than the predetermined speed. Then, even after the main drive system MD is stopped, the first gap 105 remains substantially closed.

That is, in any of the cases of “start-up / increase—constant speed operation at desired operating speed” and “constant speed operation at desired operating speed—deceleration—stop” of the printing press, the pulse motor 36 Each time the A / D conversion operation instruction signal T1 output from the timing generation circuit 50 at appropriate intervals, P-
The pulse motor 36 stored at the address of the ROM 43
Is controlled based on the rotation amount data. That is, A / D
A / D converter 4 corresponding to the output of conversion operation command signal T1
2 converts the rotation amount data of the pulse motor 36 stored at the designated address of the P-ROM 43 of the digital signal output from the A / D converter 42 into the A / D converter 42 in response to the immediately preceding output of the A / D conversion operation instruction signal T1. Is compared with the rotation amount data of the pulse motor 36 stored in the designated address of the P-ROM 43 of the digital signal output by the controller, and the rotation direction of the pulse motor 36 is determined based on which of the two rotation amount data is larger. The rotation amount of the pulse motor 36 is determined based on the difference between the two rotation amount data.

Subsequently, the pulse motor controller 4
8, a pulse motor rotation drive command based on the determination of the drive rotation direction and the drive rotation amount is transmitted to the pulse motor driver 6.
0, the pulse motor driver 60 rotationally drives the pulse motor 36 so as to rotate by the command rotation amount in the command rotation direction. The rotation of the pulse motor 36 in the command rotation direction / command rotation amount is controlled by the drive gear 35 c, the first intermediate gear 35 a, the second intermediate gear 35 b, and the gear 35.
The rotation is transmitted to the end face cam member 33 via d, and the cam face rotates in a predetermined direction by a predetermined amount of rotation.

The movement of the opening / closing member 2 with respect to the outer peripheral surface of the fountain roller 100 by the rotation of the cam surface of the end surface cam member 33, that is, the adjustment of the opening degree of the first gap 105 is as described above. If
The rotation of the pulse motor 36 in the commanded rotation direction and the commanded rotation amount is also repeated, and the cam surface is accumulated for a predetermined amount of rotation in a predetermined direction, and the total amount of rotation becomes an adjustment amount of the opening degree of the first gap 105. . Thus, in the process of starting or increasing the speed of the main drive system MD, the first gap 105 opens from a substantially closed state in an appropriate change pattern, and becomes fully open at a predetermined speed equal to or lower than a desired operating speed, and at a predetermined speed or higher. Is kept fully open.

In the process of deceleration or stopping, the first gap 1
05 is a fully open state until the predetermined speed is reached, and is closed in an appropriate change pattern from the fully open state to a stop, that is, an appropriate deceleration speed equal to or higher than the operating speed of zero,
At the appropriate deceleration speed, the state is substantially closed, and when the main drive system MD is stopped, the substantially closed state of the first gap 105 is maintained. In any case, the first gap 10
5, the first gap 105
The ink is put in a state where the used ink does not drool from the first gap 105 in combination with the rotation speed of the ink discharging roller 100 which rotates with the operation of the main drive system.

When the first gap 105 expands and becomes an opening state corresponding to the operation state of the printing press, the ink adhering to the outer peripheral surface of the rotating ink discharging roller 100 is removed by the first outer peripheral surface. Through the gap 105. The ink led out by the outer peripheral surface of the ink fountain roller 100 is caused to reach an opposing portion between the outer peripheral surface of the ink fountain roller 100 and the outer peripheral surface of the concave-convex roller 110 by the rotation of the ink fountain roller 100.
Roller 10 at an interval smaller than the gap 105 of
0 is supplied to the outer peripheral surface of the concave / convex roller 110 facing the outer peripheral surface.

The ink supplied to the outer peripheral surface of the concave and convex roller 110 is rotated by the rotation of the concave and convex roller 110 to contact the outer peripheral surface of the concave and convex roller 110 and the outer peripheral surface thereof. Roller 1
The outer peripheral surface of the roller 20 is supplied to the outer peripheral surface of the weighing roller 130 which rotates while being in contact with the outer peripheral surface. The ink supplied to the outer peripheral surface of the measuring roller 130 is partially accommodated in a number of fine recesses evenly arranged on the outer peripheral surface thereof, and the ink is supplied to the measuring roller 1.
By the rotation of 30, the doctor device 150 reaches a position where the doctor device 150 comes into contact with the outer peripheral surface of the measuring roller 130, and the excess is scraped off by the doctor device 150. As a result, the measuring roller 13 passing through the contact position of the doctor means 150
A substantially constant amount of ink is left on the outer peripheral surface over the entire length of which the majority of the ink is contained in the fine concave portions.

The ink on the outer peripheral surface of the measuring roller 130, which is a substantially constant amount over the entire length, is caused to reach a contact position between the outer peripheral surface of the measuring roller 130 and the outer peripheral surface of the setting roller 140 by the rotation of the measuring roller 130. The supply roller 140 is supplied to the image portion of the printing plate of the plate cylinder 200 with which the contact roller 140 is in contact via the outer peripheral surface of the rotating roller 140. The ink supplied to the image portion of the printing plate is printed on a printing medium (for example, paper (not shown)) directly or via an appropriate intermediate (for example, a blanket surface (not shown)).

[0094] In the above embodiment, 稼 printing machine
Move and open the ink discharge adjustment plate 2 in response to the change in the moving speed.
Although and it is controlled so as to start, instead of it, in correspondence with the other changes in the operation of the printing press ink fountain blade 2
It is also possible to control to start the movement .

Specifically, for example, the start signal of the printing press and the stop signal of the printing press are transmitted by the pulse motor controller 4.
Is input to 8, in the backward direction in the case of the start signal, starts moving the inking plate 2 in the forward direction when the stop signal
At the same time, a pulse motor rotation drive command of a drive rotation direction and a predetermined rotation amount for moving a predetermined distance is input from the pulse motor controller 48 to the pulse motor driver 60, and the pulse motor driver 60
The pulse motor 36 is configured to be rotationally driven so as to rotate by the command rotation amount in the command rotation direction.

For example, when the printing machine is configured to perform input / output of printing pressure and contact / separation of the setting roller with respect to the printing plate by sequence control, an appropriate signal for performing this sequence control, for example, The configuration is such that the operation signal of the contact of the setting roller with the printing plate is the same as the start signal in the above-described embodiment, and the operation signal of the separation of the setting roller from the printing plate is handled in the same manner as the stop signal in the above-described embodiment.

In each of the above specific examples,
The first gap 105 is substantially closed by moving the ink fountain adjusting plate 2 forward and backward by a predetermined distance, or an opening state necessary for operation of the printing press, that is, necessary for sending out a printable amount of ink. An open state exceeding the minimum size is obtained. Further, when each operating unit of the printing press is driven by an independent drive unit, the main drive system MD in the above-described embodiment is not necessarily limited to the drive unit that drives the plate cylinder 200. Alternatively, a driving unit that drives a group of rollers of the ink supply system may be used.

[0098]

According to the ink supply apparatus of the present invention,
The degree of opening of the ink discharge port, which is a gap between the outer peripheral surface of the ink discharging roller forming the ink storing means and the lower end of the inclined surface adjacent thereto, is related to the operating speed of the printing press.
An opening / closing member whose movement is controlled so as to adjust the opening / closing of the ink supply port when the printing press is stopped. At least when the printing press is in a predetermined operation state, the ink discharge port is in an open state so that the used ink does not drip downward at the rotation speed of the ink supply roller at that time. Movement of the opening and closing member so that the opening and closing member occupies the printing press.
Is automatically controlled in relation to the operating speed of the vehicle.

Therefore, no matter what kind of fluid ink is used, there is no danger that the ink drips downward from the ink discharge port during the start-up speed-up process and the deceleration stop process of the printing press. In addition, an ink supply state corresponding to the operation state of the printing press can appear. Therefore, the fluidity range of usable ink is wide, the operation efficiency of the printing press is improved, and various printed matter can be produced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration in which an ink supply device according to an embodiment of the present invention is applied to a so-called keyless inking type printing press.

FIG. 2 is a block diagram showing an ink supply port opening / closing control system of the ink supply device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of an ink storage unit of the ink supply device according to the embodiment of the present invention.

FIG. 4 is a side view showing a state in which an ink supply port of the ink supply device shown in FIG. 1 is closed.

FIG. 5 is a side view showing the ink supply port opening state of the ink supply device shown in FIG. 1;

FIG. 6 is a partial cross-sectional view showing a form of an outer peripheral surface of a concave-convex roller in the printing press shown in FIG.

FIG. 7 is a partial sectional view showing a form of an outer peripheral surface of a measuring roller in the printing press shown in FIG.

FIG. 8 is a partial cross-sectional view showing another form of the outer peripheral surface of the measuring roller in the printing press shown in FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 ink storing means 105 first gap 11 base portion 12 side wall portion 13 bottom plate 2 ink discharge adjusting plate A adjusting portion 31 push rod 32 cam driven roller 33 end face cam member 34 compression coil spring 35a first intermediate gear 35b second intermediate Gear 35c Drive gear 35d Gear part 36 Pulse motor B Open / close control system 40 Rotary encoder 41 F / V converter 42 A / D converter 43 Programmable read-only memory (PR)
OM) 44 First register 45 Second register 46 Comparator 47 Subtractor 48 Pulse motor controller 50 Timing generation circuit 60 Pulse motor driver 100 Fountain roller 110 Uneven roller 111 Projection 112 Groove 115 Second gap 120 Intermediate roller 130 Metering roller 131 Outer peripheral surface layer 132 Base material 133 Small cavity 134 Depression (cell) 135 Embankment 140 Wearing roller 150 Doctor means 151 Doctor blade 152 Blade holder 200 Plate cylinder

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41F 31/04 B41F 31/02 B41F 31/12

Claims (6)

(57) [Claims] 1. A printing press for supplying ink to a printing plate surface for printing, the printing press rotating in accordance with an increase or decrease in operating speed of the printing press.
An ink fountain roller whose speed increases and decreases in a predetermined relationship, a base portion having a slope located at a side of the ink fountain roller and having a lower end close to an outer peripheral surface of the ink fountain roller, and an outer peripheral surface of the ink fountain roller And an ink storage means comprising a side wall part that partitions both sides of a groove formed by the inclined surface and the inclined surface, and an ink discharge port which is a gap between the outer peripheral surface of the ink discharge roller and the lower end of the inclined surface adjacent thereto. An opening / closing member provided on the base portion so as to be movable in a direction of coming and going with respect to an outer peripheral surface of the ink fountain roller to open and close; Opening / closing member moving means for moving the opening / closing member moving means, and starting the opening / closing member moving means in relation to the operation of the printing press,
Opening / closing control means for controlling a moving position in relation to an operation speed , wherein the opening / closing member is configured to output ink when the printing press is stopped.
The ink outlet closest to the outer peripheral surface of the roller
And the operating speed determined by the printing press in advance.
Away from the outer surface of the ink delivery roller when it reaches
The ink outlet to an amount exceeding the amount required for printing.
Between the position where it can be sent to
Opening and closing movement by the closing member moving means, the ink delivery
The mouth is closed at each rotation speed of the ink delivery roller.
The ink supply device is configured so that the ink does not droop downward . 2. The distance between the opening / closing member and the outer peripheral surface of the ink supply roller at a position where the opening / closing member is closest to the outer peripheral surface of the ink supply roller and substantially closes the ink discharge port is 0.0 to 0.1 mm. The ink supply device according to claim 1, wherein 3. The opening / closing control means is configured to perform an operation control so as to start moving the opening / closing member away from the outer peripheral surface of the ink discharging roller forming the ink storing means when the printing press is started. Or the ink supply device according to claim 2. 4. A switching control means, in a direction in which operation speed of the printing press to separate the closing member from the outer peripheral surface of the ink fountain roller for forming an ink reservoir means with reaches a predetermined speed
2. The apparatus according to claim 1, wherein the operation is controlled to start moving.
Or the ink supply device according to claim 2. 5. An opening / closing control means controls the operation of an opening / closing member so that a distance from an outer peripheral surface of an ink fountain roller forming an ink storing means gradually increases in accordance with an increase in the operating speed of the printing press. When the operating speed is equal to or higher than a predetermined desired speed, the separation distance from the outer peripheral surface of the ink discharging roller is increased.
The ink supply device according to any one of claims 1 to 4, wherein the operation of the opening / closing member is controlled so as to maintain the maximum size. 6. An opening / closing control means for predicting an operation speed of a printing press.
The operation of the opening and closing member is controlled so that the separation distance from the outer peripheral surface of the ink fountain roller forming the ink storing means increases stepwise each time a predetermined set speed is reached, and the operating speed of the printing press is determined in advance. The ink according to any one of claims 1 to 4, wherein an operation of the opening / closing member is controlled such that a separation distance from the outer peripheral surface of the ink discharging roller maintains a maximum value at a speed higher than the desired speed. Feeding device.