JP2001353843A - Method and apparatus for regulating printing pressure in printing press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that skill or time is required in the regulation of printing pressure because the printing pressures between the plate cylinders and blanket cylinder of a conventional offset rotary press or between the blanket cylinders thereof are separately performed at the left and right bearing parts of the cylinders. SOLUTION: The gears for driving the left and right printing pressure regulating mechanisms of a cylinder are joined on the same shaft in order to drive the left and right printing pressure regulating mechanisms at the same time or mechanisms for applying the rotation of a drive motor to the printing pressure regulating mechanisms are provided and rod pressure is automatically applied to the cylinder to rotate the plate cylinder to a position capable of easily measuring rod pressure and the rod pressure is measured manually or automatically by a sensor to regulate printing pressure for a short time without requiring skill.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for adjusting a printing pressure between cylinders (plate cylinders, blanket cylinders) in a printing press.

[0002]

2. Description of the Related Art In a rotary offset printing press, the pressure of the plate cylinder, the blanket cylinder, and the blanket cylinder in contact with each other, that is, the printing pressure, is adjusted.
The transfer of ink to the ink is performed uniformly. However, since the conventional printing pressure adjustment mechanism is configured to perform the printing separately on the left and right bearing portions of the cylinder, there is a problem that the printing pressure adjustment requires skill and takes time.

The conventional printing pressure adjusting mechanism will be described below to clarify the problems. FIG. 8 shows a printing unit in an offset rotary printing press, in which ink 17 is sequentially transferred and supplied from an ink reservoir via an ink roller group.
Ink roller 1 on printing plate 20 wound on plate cylinder 3
6. Then, the pattern on the printing plate 20 to which the ink is supplied is transferred to the outer peripheral surfaces of the blanket cylinders 4 and 5, and further transferred to both sides of the web 19 running between the blanket cylinder 4 and the blanket cylinder 5, and printed. Is performed.

Among the cylinders arranged side by side, such as between the plate cylinder 3 and the blanket cylinders 4 and 5, between the blanket cylinder 4 and the blanket cylinder 5, etc.
In order to uniformly transfer the ink in a good state in the width direction of the web 19 as described above, usually, one of the two blanket cylinders 4 and 5, for example, the blanket cylinder 4 is fixed in position. The printing pressure of the engaging surface of the blanket cylinder 5 opposed to the blanket cylinder 4 via the web 19 is adjusted so that a constant printing pressure always acts on the web 19 running in the middle. this is,
The same applies to the printing pressure between the blanket cylinders 4 and 5 and the plate cylinder 3.

This printing pressure adjustment is performed, for example, as shown in FIG.
For example, in the blanket cylinder 4 and the blanket cylinder 5,
Bearling to the standing frames 1a and 1b (see FIG. 1)
G2 ₄Blanket cylinder 4 that supports the shaft 4a in a fixed position via the
In contrast, bearing 2 ₅Through both shaft ends of shaft 5a
Through the inner eccentric bearing 11 and the outer eccentric bearing 6, respectively.
The blanket cylinder 5 supported by the frames 1a and 1b
The structure is such that the core bearing 6 rotates and comes in contact with and separates from it.
I was

The mechanism for rotating the outer eccentric bearing 6 is as follows.
The swing bracket 21 is fixed to the outer eccentric bearing 6, and the adjustment bolt 2 is attached to a part of the swing bracket 21 via a pin 22.
3 is supported, and a female screw is formed at the other end of the adjusting bolt 23, and a handle 24 is screwed thereto. The handle 24 is supported by a rotatable shaft support fitting 25, and a scale for instructing the amount of rotation is provided in a part thereof. In the drawing, reference numerals 26a and 26b denote stoppers for restricting the movement of the handle 24 in the axial direction, and reference numeral 27 denotes a lock nut for defining a movement limit.
The inner eccentric bearing 1 fitted on the inner diameter side of the outer eccentric bearing 6
Reference numeral 1 is rotated via a link mechanism or the like, and functions as a mechanism for attaching / detaching (inserting / unloading) the blanket cylinder 5 and the plate cylinder 3.

With the above structure, by rotating the handle 24 in a predetermined direction, the adjustment bolt 23 moves in and out (moves left and right) with respect to the handle 24 whose position is regulated by the shaft support 25, and the swing bracket 21 is moved. The outer eccentric bearing 6 can be rotated through the intermediary. That is, the axial position of the blanket cylinder 5 supported by the inner eccentric bearing 11 and the outer eccentric bearing 6 is moved so as to be in contact with or separated from the mating cylinder, and the printing pressure with the fixed blanket cylinder 4 is appropriately adjusted. It has a structure that can be used.

In the conventional printing pressure adjusting device, the above-mentioned mechanisms are separately provided on both sides of the blanket cylinder 5 in the axial direction, and the adjustment is performed separately on the left and right sides. The same applies to the printing pressure adjustment of the blanket cylinder 4 or 5 with the plate cylinder 3, and the eccentric bearing supporting the shaft of each plate cylinder 3 is provided with a printing pressure adjusting device similar to that described in FIG. ing.

[0009] The result of the adjustment by these printing control devices is generally based on the fact that the cylinder coated with the ink is pressed to attach and detach the cylinder (insertion and removal of the cylinder), and the trace of the pressed nip (hereinafter referred to as bar pressure). Is measured to determine the quality.

[0010]

The above is a conventional printing pressure adjusting mechanism. As can be understood from the above description, (1) the printing pressure of each cylinder is separately adjusted on the left and right sides, and the bar pressure is printed each time. Then, the process of rotating the body and performing the measurement must be repeated, which takes time and is likely to cause misalignment on the left and right. (2) Therefore, long experience in adjusting printing pressure, that is,
High technology was required and required skilled personnel. (3) Also, when resetting is necessary, it takes exactly the same time as the initial setting, and the time cannot be reduced. There were various problems (problems).

To cope with such a problem, Japanese Patent Laid-Open No.
In JP-A-180978, a load generating means such as an air cylinder is attached to the left and right shafts of the cylinder, and the pressure cylinder type, the impression cylinder length, the impression cylinder radius, the impression cylinder Young's modulus, and the left and right of the impression cylinder are applied. A storage device for storing load ratio data such as a load ratio is prepared, and the data stored in the storage device and the printing surface pressure separately input and the plate cylinder radius and the impression cylinder type are applied to the load generating means. There is shown an apparatus capable of adjusting a printing pressure by using a personal computer or a workstation for calculating load data.

However, in such an apparatus, a personal computer or a work station must be prepared, and a load generating means such as an expensive air cylinder must be prepared, which is very expensive.

In view of the above, the present invention provides a mechanism capable of simultaneously performing left and right printing pressure adjustments, and automatically performs a printing pressure adjustment process so that printing pressure adjustment can be easily performed. Further, it is an object to provide an inexpensive method and apparatus for adjusting a printing pressure in a printing press which does not require a skilled person.

[0014]

According to the present invention, there is provided a printing press provided with printing pressure adjusting means on both sides in the axial direction of a cylinder. The pressure adjusting means was adjusted, and then the printing pressure adjusting means on both sides of the cylinder moved the axis of the cylinder parallel to the direction of contact and separation of the adjacent cylinders to adjust the printing pressure.

As described above, the printing pressure adjusting means provided on both sides in the axial direction of the cylinder is adjusted so that the cylinders in contact with each other are parallel to each other, and then the cylinders are moved in parallel in the direction of contact and separation of the cylinders in contact with each other. It is possible to adjust in a short period of time without requiring a skilled person as when adjusting the left and right printing pressure adjusting means separately like
Further, the configuration can be made inexpensively without using expensive air cylinders, personal computers or workstations.

Then, it is determined whether or not the adjusted printing pressure is appropriate. After adjusting the printing pressure by the printing pressure adjusting means, ink is adhered to the cylinder, the cylinder is attached / detached, the bar pressure is printed, and the bar pressure is measured. To this end, the torso is rotated to a position where the bar pressure can be easily measured using a rotational phase detecting means for detecting the rotational phase of the torso.

As described above, by printing the bar pressure after the printing pressure adjustment, and by rotating the bar pressure by a fixed angle so that the bar pressure can be easily measured, the printing pressure can be quickly adjusted without performing the operation of rotating the body each time. Becomes possible.

In order to automatically carry out these steps, a printing pressure adjusting means for adjusting the printing pressure by moving the aforementioned adjacent cylinders in parallel, applying ink to the printing cylinder after the printing pressure adjustment, and attaching / detaching the printing cylinder Means to print the bar pressure, means for measuring the bar pressure, and driving the printing pressure adjusting means so that the input target printing pressure and the mounting and dismounting of the cylinder to print the bar pressure on the cylinder, A control device for measuring the printing pressure from the bar pressure to calculate a difference from the target printing pressure and re-driving the printing pressure adjusting means so as to minimize the difference; Can be adjusted automatically.

By doing so, the printing pressure adjustment to the input target printing pressure, the printing of the bar pressure, and the measurement and readjustment of the bar pressure can be performed automatically, and in a short time, the skill can be improved. It is possible to provide an inexpensive printing pressure adjusting device for a printing press that does not require a user.

The mechanism for moving the printing pressure adjusting means on both sides in the body axis direction in parallel includes an eccentric bearing which supports both sides on the body axis direction, means for simultaneously rotating the two eccentric bearings, and a rotation amount. A means for simultaneously rotating both eccentric bearings, a sector gear fixed to the two eccentric bearings, a gear for rotating the sector gear, a shaft for simultaneously rotating the gear, A motor configured to drive a shaft, or a sector gear fixed to the two eccentric bearings, and a gear that rotates the sector gear,
The motor is configured to drive each of the gears.

By constructing the mechanism for moving the cylinder in parallel in this manner, it is possible to use a conventional mechanism at a low cost and to separately adjust the printing pressure adjusting mechanisms on both sides in the axial direction of the cylinder as in the prior art. This allows for a short time adjustment without taking time or making it difficult to readjust. In addition, by driving the printing pressure adjusting means on both sides in the body axis direction by different motors, even if the movement is left and right, it is possible to easily correct the movement.

[0022]

Embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention to them unless otherwise specified. This is just an example.

FIGS. 1 and 2 are explanatory views of the configuration of a first embodiment of a printing pressure adjusting device according to the present invention. FIG. 1 is a front view, FIG.
(A) is a side view as seen from the direction of the arrow (A) in FIG. 1, (b) is a side view as seen from the direction of the arrow (B), and FIG. FIG. 4 shows a third embodiment of the present invention.
FIGS. 5 and 6 are flow charts of a printing pressure adjusting operation of the embodiment.

In the drawings, reference numerals 1a and 1b denote frames standing on both width ends of the printing apparatus. Reference numerals 24 and ₂₅ denote bearings and reference numerals ₄ and ₅ denote blanket cylinders. In the following description, the blanket cylinder 4 will be described as a fixed side. . 6a, 6b are outer eccentric bearings for adjusting printing pressure, 7a, 7b
Is a sector gear, 8 is a motor, 9a and 9b are gears, 10 is a position detector (encoder), 11a and 11b are inner eccentric bearings for attaching / detaching (inserting and removing the trunk), 12 is a shaft, 13
a and 13b are bearings of the shaft 12, 14 is a driving force transmission device, 2
Reference numeral 8 denotes a drum attaching / detaching device, and 29 denotes a rotation phase detector provided in the drum drive system, and detects a rotation phase of the drum (plate cylinder, blanket cylinder). FIG.
Reference numeral 15 denotes a control device for appropriately controlling the amount of axial movement of the blanket cylinder 5 and the like, adhesion of ink, attachment and detachment of the cylinder, and the like.
An operation box 0 has manual, semi-automatic, automatic switching, input of a printing pressure set value, a bar pressure check command button, and the like.

As shown in FIGS. 1 and 2, a printing pressure adjusting device according to a first embodiment of the present invention comprises a blanket cylinder 4 mounted on a frame 1a, 1b provided on both width ends of a printing device, and a bearing 2 mounted thereon. ₄ , the shafts 4 a, 4 b are fixedly supported by shafts 4, and the inner eccentric bearings 11 a, 11 for bearing attachment / detachment having bearings ₂₅ inserted on the outer diameter sides of both shaft ends of the shafts 5 a, 5 b in the blanket cylinder 5.
b, and an outer eccentric bearing 6 for adjusting the printing pressure on its outer diameter side.
a and 6b are provided and supported by the frames 1a and 1b, and the blanket cylinder 5 can be moved in the contact and separation directions by rotating the blanket cylinder 4 and the outer eccentric bearings 6a and 6b.

The rotation of the outer eccentric bearings 6a, 6b is performed by fixing sector gears 7a, 7b on the basis of the center of a circle supporting the outer eccentric bearings 6a, 6b on the frame 1, and attaching the sector gears 7a, 7b respectively. The gears 9a and 9b fixed to the common shaft 12 are engaged with each other. This axis 12
A pair of bearings 13a whose both ends are supported by the frame 1,
13b, one end is connected to the shaft of the motor 8 via the driving force transmission device 14. Either the gear 9a or 9b fixed to the shaft 12 has a structure in which the relative position with respect to the shaft 12 can be adjusted.

Reference numeral 10 attached to the rear end of the motor 8 is a position detector (encoder) which detects the adjusted position of the drive system and outputs an external eccentric bearing through a shaft 12, a gear 9, and a sector gear 7 connected to each other. 6 by knowing the rotational phase angle of the outer eccentric bearings 6a and 6b,
The translation amount of the torso can be determined. The inner eccentric bearing 11 fitted on the inner diameter side of the outer eccentric bearings 6a and 6b is attached and detached by a trunk attaching / detaching device 28 including a link mechanism, an actuator and the like.

The operation of the printing pressure adjusting apparatus thus configured will be described with reference to the flowchart shown in FIG. The present invention can operate in three modes: manual, semi-automatic, and automatic. The following operation will be described in the case of the semi-automatic mode.

First, the gear 9 fixed to the shaft 12
Of the a or 9b, the one that can adjust the relative position with respect to the shaft 12 is adjusted, and the fixed blanket cylinder 4 and the blanket cylinder 5 are adjusted in advance so as to be parallel. Then, the operation box 30 is operated at 501 in FIG. 5 to switch between manual, semi-automatic, and automatic, and the printing pressure set value is input at 502,
At 503, the bar pressure check command button is pressed.

Then, the control device 15 drives the motor 8 at 504 until the position detector 10 constituted by the encoder indicates the printing pressure set value input at 502. Then, the rotation of the motor 8 is transmitted to the shaft 12 via the driving force transmission device 14, and the sector gears 7a, 7b are rotated by the gears 9a, 9b. Therefore, the outer eccentric bearings 6a and 6b to which the sector gears 7a and 7b are attached rotate together, and the shafts 5a and 5b of the blanket cylinder 5 move in parallel according to the amount of eccentricity, and the marks set by the blanket cylinder 5 and the blanket cylinder 4 are set. Move to the pressure position.

At the same time, according to the bar pressure check command of 503,
At 505, the printing press operates to supply an appropriate amount of ink to one of the cylinders. At 506, it is confirmed that the printing pressure adjustment has been completed. (Without body). As a result, the printing pressure width (bar pressure) between the cylinders is printed on the partner cylinder.
The cylinder is rotated at a fixed angle using the arrow, and stops while the bar pressure between the cylinders can be seen. Therefore, this bar pressure was measured at 509 and 51
The difference from the target value is calculated at 0, and the quality of the printing pressure is determined at 511 and whether the printing pressure is to be corrected or not.

The first embodiment of the present invention operates as described above, so that if a printing pressure target value is specified, the printing pressure can be set and the bar pressure can be measured. Therefore, since it is only necessary to measure the bar pressure and input the correction value, the skill of adjusting the printing pressure does not need to be advanced, and the operation time can be shortened. Also, at the installation stage, as described above, the gear 9a or 9b
Of these, the one whose relative position can be adjusted with respect to the shaft 12 is adjusted so that the adjacent cylinders are adjusted in parallel, so that the left and right outer eccentric bearings 6a, 6b of each cylinder are adjusted.
At the same time, and this also eliminates the need for advanced skills.

FIG. 3 is an explanatory view of the configuration of a printing pressure adjusting device according to a second embodiment of the present invention.
Same as (b). In the printing pressure adjusting device according to the second embodiment of the present invention, the left and right eccentric bearings in the first embodiment are not adjusted simultaneously by the common shaft 12, but can be adjusted individually on the left and right. In the figure, reference numerals 1a and 1b denote frames standing on both width ends of the printing apparatus, ₂₅ denotes a bearing, 5 denotes a blanket cylinder which moves for adjusting printing pressure, and in the following description, the blanket cylinder 4 is a fixed side. explain. 6a and 6b are outer eccentric bearings for adjusting printing pressure, 7a and 7b are sector gears, 8a and 8
b is a motor, 9a and 9b are gears, 10a and 10b are position detectors (encoders), 11a and 11b are inner eccentric bearings for attaching and detaching the body, 12a and 12b are shafts, 13a, 13aa, 1
3b and 13bb are bearings, and 14a and 14b are driving force transmission devices.

This operation will be described. First, 5 in FIG.
At 01, the operation box 30 is operated to switch between manual, semi-automatic, and automatic. At 502, the printing pressure set value is input, and at 503, the bar pressure check command button is pressed. Then, the control device 15
In step 04, the motors 8a and 8b are driven until the position detectors 10a and 10b formed of encoders indicate the printing pressure set value input in step 502. Then, the rotation of the motors 8a and 8b is controlled by the driving force transmission devices 14a and 14b.
12b, the sector gears 7a, 7b are rotated by the gears 9a, 9b. Therefore, the sector gears 7a, 7
b, the outer eccentric bearings 6a, 6b are rotated together, the shafts 5a, 5b of the blanket cylinder 5 move in parallel according to the amount of eccentricity, and the blanket cylinder 5 and the blanket cylinder 4 have the set printing pressure. Move up to.

At the same time, according to the bar pressure check command of 503,
At 505, the printing press operates to supply an appropriate amount of ink to one of the cylinders. At 506, it is confirmed that the printing pressure adjustment has been completed. As a result, the printing pressure width (bar pressure) between the cylinders is printed on the partner cylinder, and 5
At 08, the torso is rotated by a fixed angle using the rotational phase detector 29, and stops while the bar pressure between the torso is visible. Therefore 509
The bar pressure is measured at 510, the difference from the target value is calculated at 510, and the quality of the printing pressure is determined at 511, and whether to correct the printing pressure is determined.
In the case of correction, a correction value is input at 512 and the same operation is performed.

At this time, if the bar pressure is different between the left and right in the axial direction of the blanket cylinder 5, only the bar pressure that needs to be corrected is input to the operation box 30 in 512. Then, the control device 15
Is the position detector 10a or 10b that is instructed,
The motor 8a or 8b is driven until the printing pressure set value input in 512 is indicated, and the same operation as described above is performed. Therefore, even if the right and left outer eccentric bearings 6a and 6b move out of order, the correction can be performed simply by instructing the operation box 30 to the correction value, so that there is an effect that the correction is easy.

FIG. 4 is an explanatory view of the configuration of a printing pressure adjusting apparatus according to a third embodiment of the present invention. The mechanical configuration is the same as that of the first and second embodiments shown in FIG. 1 or FIG. Whereas, in the first or second embodiment, the measurement of the bar pressure was performed by a person, but as shown in (4-a), the sensors 18, 18 ', or (4) installed on the outer peripheral surface of the body 5 were used. As shown in FIG. 6B, the operation is automatically performed by the sensors 18 and 18 'installed facing the web 19, and FIG. 6 shows the operation flow thereof.

In FIG. 4, 3 is a plate cylinder, 4 and 5 are blanket cylinders, 15 is a control device, 16 is an inking roller, 17 is ink, 18 is a bar pressure detection sensor, 19 is a web, 20 is a printing plate, Reference numeral 30 denotes an operation box.

The third embodiment will now be described with reference to the flow chart of FIG. 6. The operation box 30 is operated to set the automatic mode at 601; the target value of the printing pressure (bar pressure) is input at 602; Press the bar pressure check command button.

Then, the control device 15 controls the motor 8 at 604.
Are driven until the position detector 10 constituted by the encoder shown in FIG. 1 or FIG. The rotation of the motor 8 is controlled by the driving force transmission device 14.
To the shaft 12, and the sector gears 7a, 7b are rotated by the gears 9a, 9b. Therefore, the outer eccentric bearings 6a and 6b to which the sector gears 7a and 7b are attached rotate together, and the shafts 5a and 5b of the blanket cylinder 5 move in parallel according to the amount of eccentricity, and the marks set by the blanket cylinder 5 and the blanket cylinder 4 are set. Move to the pressure position.

At the same time, according to the bar pressure check command of 603,
At 605, the printing press operates to supply an appropriate amount of ink to one of the cylinders. At 606, it is confirmed that the printing pressure adjustment has been completed. Thereby, the printing pressure width (bar pressure) between the cylinders is printed on the partner cylinder. Therefore, at 608, the bar pressure is measured by the bar pressure detection sensors 18 and 18 'by rotating the body at a fixed angle using the signal of the rotation phase detector 29 for detecting the rotation phase of the body.

The measurement result is sent to the control device 15 and
At 10 the difference is calculated by comparing with the target value and at 611 it is determined whether the difference is within an acceptable range. If it is unacceptable, a command to correct the difference is issued at 612, the process returns to 604, and a drive command is issued to the motor 8, and the same operation as described above is performed. When the bar pressure falls within the target value, the process ends. In this way, the printing pressure is adjusted completely automatically, no skilled technician is required, and the printing pressure can be adjusted in a short time.

The order of adjustment of the printing pressure is usually such that firstly the space between the fixed blanket cylinder 4 and the plate cylinder 3 is adjusted, and then the blanket cylinders 4 and 5 are adjusted.
And then between the moving blanket cylinder 5 and the plate cylinder 3. In the above description, the bar pressure is measured by the blanket cylinder. However, the sensors 18 and 18 'are installed at the position (4-b), the bar pressure is printed on the web 19, and the sensors 18 and 1' are printed.
The measurement may be performed at 8 '.

By doing so, the third aspect of the present invention is achieved.
In the embodiment, in addition to the effects of the embodiment 1 or the embodiment 2, the printing operation can be automatically performed until the printing pressure adjustment operation is completed, and there is an effect that a high level of skill is not required.

[0045]

As described above, according to the first and third aspects of the present invention, the printing pressure adjusting means provided on both sides in the axial direction of the cylinder is adjusted so that the cylinders in contact with each other are parallel. After that, by moving the torso in parallel in the direction of contact and separation of the torso,
Unlike the conventional case where the right and left printing pressure adjusting means are adjusted separately, adjustment is possible in a short period of time without requiring a skilled person, and without using expensive air cylinders, personal computers or workstations etc. Inexpensive configuration.

Further, as in the inventions according to the second and fourth aspects of the present invention, the bar pressure is printed after the printing pressure is adjusted, and the bar is rotated by a predetermined angle so that the bar pressure can be easily measured. The printing pressure can be quickly adjusted without performing an operation for causing the printing pressure to be adjusted.

According to a fifth aspect of the present invention, a control device for automatically performing printing pressure adjustment and bar pressure printing, and automatically performing the process from the measurement of the bar pressure to the readjustment of the printing pressure is provided. It is possible to adjust the printing pressure which does not require the printing.

Further, by constructing the mechanism for moving the barrel in parallel as described in the sixth, seventh and eighth aspects, it is possible to use a conventional mechanism at a low cost, and furthermore, as in the prior art, the barrel shaft is provided. By separately adjusting the printing pressure adjustment mechanisms on both sides in the direction, it is possible to perform adjustment in a short time without taking time or making it difficult to readjust. In addition, by driving the printing pressure adjusting means on both sides in the body axis direction by different motors, even if the movement is left and right, it is possible to easily correct the movement.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a side view showing a configuration of a main part according to the embodiment of the present invention.

FIG. 3 is a front view showing a configuration of a main part of a second embodiment of the present invention.

FIG. 4 is a diagram illustrating a configuration of a third embodiment of the present invention.

FIG. 5 is a flowchart in a case where the printing pressure adjusting work of the present invention is performed semi-automatically.

FIG. 6 is a flowchart in a case where the printing pressure adjusting work of the present invention is performed automatically.

FIG. 7 is an explanatory diagram of a conventional printing pressure adjusting device.

FIG. 8 is an explanatory diagram of a printing device for explaining printing pressure adjustment between blanket cylinders of the printing press.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Bearing 3 Plate cylinder 4 Fixed-side blanket cylinder 5 Moving-side blanket cylinder 6 Outer eccentric bearing 7 Sector gear 8 Motor 9 Gear 10 Position detector (encoder) 11 Inner eccentric bearing 12 Shaft 13 Bearing 14 Driving force transmission device 15 Control device Reference Signs List 16 Ink roller 17 Ink 18 Bar pressure detection sensor 19 Web 20 Printing plate 21 Swing bracket 28 Body attaching / detaching device 29 Rotational phase detector (rotary encoder) 30 Operation box

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsunari Morio 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. F-term in Paper & Printing Machinery Division (reference) 2C034 AA16 AE03 AE07

Claims (8)

[Claims] 1. A printing pressure adjusting method for a printing press, wherein printing pressures of cylinders in contact with each other in a printing press are adjusted by printing pressure adjusting means provided on both sides in the cylinder axis direction. The printing pressure adjusting means on both sides of the body are adjusted so that the printing pressure adjusting means on both sides of the body are moved in parallel in the direction of contact and separation of the body in contact with the axis of the body, thereby adjusting the printing pressure. Printing pressure adjustment method in a printing press. 2. A printing pressure adjusting method for a printing press, wherein a printing pressure of an adjacent cylinder in a printing press is adjusted by printing pressure adjusting means provided on both sides in the cylinder axis direction. After adjusting the pressure, ink is attached to the cylinder, the cylinder is attached / detached, the bar pressure is printed, and the bar pressure is measured. A printing pressure adjusting method for a printing press, characterized in that the cylinder is rotated to a position where the printing can be measured. 3. A printing pressure adjusting device for a printing press for adjusting the printing pressure of a cylinder which is in contact with printing pressure adjusting means provided on both sides in the cylinder axis direction of the printing press, wherein the printing pressure adjusting means comprises: Means for adjusting the axes of the cylinders so that they are parallel to each other, and means for moving the axes of the mutually adjacent cylinders in parallel in the direction in which the cylinders move toward and away from each other, and the printing pressure is adjusted by the parallel translation of the cylinders. Pressure adjusting device in a printing press. 4. A printing pressure adjusting means for adjusting a printing pressure by moving an adjacent cylinder in a printing machine in parallel, and applying ink to the printing cylinder after the printing pressure is adjusted, and attaching and detaching the printing cylinder to print a bar pressure. Means, and a rotational phase detecting means for detecting the rotational phase of the trunk,
Means for rotating the cylinder by a fixed angle using the output of the rotation phase detecting means, and the cylinder is rotated by a fixed angle to measure the bar pressure. 5. A printing pressure adjusting means for adjusting a printing pressure by moving an adjacent cylinder in a printing machine in parallel, and applying ink to the printing pressure-adjusted cylinder, attaching and detaching the cylinder to print a bar pressure. Means, a means for measuring the bar pressure, and driving the printing pressure adjusting means so that the inputted target printing pressure is attained, and mounting and dismounting of the body, printing the bar pressure on the body, and converting the printing pressure from the bar pressure. A control device for measuring and calculating a difference from the target printing pressure, and re-driving the printing pressure adjusting means so as to minimize the difference, and inputting the target printing pressure to adjust the printing pressure. A printing pressure adjusting device for a printing press, comprising: 6. The means for moving the body in parallel is an eccentric bearing which supports both sides of the body in the axial direction of the body, means for simultaneously rotating the two eccentric bearings, and means for detecting the amount of rotation. A printing pressure adjusting device for a printing press according to claim 3, 4, or 5. 7. A means for simultaneously rotating the two eccentric bearings includes a sector gear fixed to the two eccentric bearings, a gear for rotating the sector gear, a shaft for rotating the gear simultaneously, and a shaft for rotating the gear. The printing pressure adjusting device according to claim 6, wherein the printing pressure adjusting device is a driving motor. 8. The means for simultaneously rotating the eccentric bearings is a sector gear fixed to the eccentric bearings, a gear for rotating the sector gear, and a motor for driving each of the gears. The printing pressure adjusting device for a printing press according to claim 6.