JPS597079A - Ink supplier for printer - Google Patents

Abstract

PURPOSE:To obtain an ink supplier capable of preventing interruption with printing operation without overmuch contact pressure of form roller when attaching or detaching a plate cylinder by using a system in which a three-stepped cam for attaching or detaching the roller is turned in two steps before or after the insertion of the cylinder. CONSTITUTION:A three-stepped cam 60 for attaching or detaching form roller 9 to an upper plate cylinder 7 is fitted into the concentrical part of the plate cylinder in the eccentric bearing 42 for the upper plate cylinder. The cam 60 is connected to the eccentric bearing 65 for the lower blanket cylinder 6 with a link mechanism containing a hydraulic cylinder 64. The cam 60 for attaching or detaching the roller is turned in two steps before or after the insertion of the cylinder by the rotation of the eccentric bearing 65 and the expansion and shrinkage of the hydraulic cylinder 64.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ink supply device for supplying printing ink transferred from an ink fountain to an output L7 and between rollers to a plate surface on a metal plate cylinder in a printing press.

In a printing press, printing ink stored in an ink fountain flows out from the gap between a fountain roller rotating inside the ink fountain and an ink blade whose tip is in contact with the circumferential surface of the fountain roller, and is passed through a plurality of mixing rollers. After being transferred while being leveled in the circumferential direction and axial direction by the swinging roller, the plate i-1 is supplied onto the plate cylinder by a plurality of ink forming rollers. The ink forming roller, which is in contact with the plate surface during printing, separates from the plate surface in conjunction with the unloading operation of the printing cylinder when it enters the non-printing state, and also in conjunction with the retracting operation of the printing cylinder when it transitions to the printing state. It is then placed against the surface of the printing plate.

FIG. 1 is an example of a conventional printing press, and FIG. To explain the outline of the printing press based on Fig. 1, the printing unit 2 of the printing press 1 includes an upper printing device 3 and a lower printing device 4.
and blanket cylinders 5.6f: They are disposed vertically in opposition to each other, and each printing unit 3, 4 has, in addition to the gono cylinder 5.6, plate cylinders 7, 8 in opposition thereto. It is provided. A plurality of ink forming rollers 9,
10 are removably attached to each other, and an inking device is attached thereto, which includes an ink fountain 11.12 for storing ink for printing and a group of rollers (not shown), and transfers the ink to an ink forming roller 9.10. ing. Further, the upper blanket cylinder 5 has a transfer cylinder 13 and a transfer cylinder 14 in contact with each other, and the paper fed one by one onto the differential plate 16 by the paper feeder 15 is transferred to the swing 17 and the transfer cylinder 14. It passes through the cylinder 13 and is held in the claw of the rubber cylinder 5. On the other hand, the ink forming roller9.10
The image formed on the printing plate is transferred to the upper and lower blanket cylinders 5 and 6 by the water supply devices 18 and 19, respectively. 5,
The image on 6 is transferred and double-sided printing is performed, and the printed paper is sequentially picked up and conveyed by the transfer cylinder 14 and the claw of the paper ejection chain 20, and then released and placed on the paper stacking table 21. It falls and is loaded. To remove the printing cylinder when the state shifts to a non-printing state, first remove the lower blanket cylinder 6 from the upper blanket cylinder 5, then remove the transfer cylinder 14 from the upper blanket cylinder 5, and then remove the upper blanket cylinder 6 from the upper blanket cylinder 5. The cylinder 5 is removed from the plate cylinder 7 in this order.

Further, as described above, in conjunction with this, the inking rollers 9 and 10 are separated from the printing surface on the printing cylinders 7 and 8. Further, when transitioning from a non-printing state to a printing state, this reverse order is used.

However, when attaching and detaching the torso as described above,
The upper blanket cylinder 5 and the transfer cylinder 14, which are equipped with claws for conveying the paper, move each time the cylinder is attached, and as a result, the paper gripping position changes, making it impossible to ensure registration accuracy, or the cylinder There were problems with noise and scratches on the body surface when attaching and detaching.

Therefore, an arrangement has been proposed in which the arrangement of the trunks is the same as that shown in FIG. 1, but only the mechanism for attaching and removing the trunks is improved. That is, in this case, in FIG. 1, the lower blanket cylinder 6 is first removed from the upper blanket cylinder 5 and the lower plate cylinder 8, and then the upper plate cylinder 7 is removed from the upper blanket cylinder 5. In the case of doroi, this is done in the reverse order. By doing so, the body provided with the claws does not move every time the body is attached or detached, and the above-mentioned problem can be solved.

In line with this change in the order of making body garments, an ink supply device that can cope with this change has been proposed, and FIGS. 2 and 3 respectively show side views of the conventional ink supply device for this culm. ing. First, referring to FIG. 2, the plate cylinder 7 is supported by an eccentric bearing whose inner circumferential circle and outer circumferential circle are eccentric by an amount indicated by the symbol t in the figure, and this eccentric bearing can be rotated on the outer circumferential surface. The printing plate cylinder 7 is configured to be attached to and detached from the upper blanket cylinder 5. When starting printing, the air cylinder 22 is activated and the piston rod 23 is extended, causing the L-shaped lever 24 to rotate counterclockwise in the figure to the state shown in the figure. The cam follower 25a and cam follower 27 are rotated counterclockwise around .
Due to the action of the h-ra arm 28, the compression coil spring 29
The ink forming roller 9 supported by the roller arm 28 is pressed against the plate surface of the plate cylinder T, and ink is supplied. When the ink has been completely supplied to the entire plate surface, the paper is supplied between the upper blanket cylinder 5 and the lower blanket cylinder 6, and at the same time, the eccentric bearing of the plate cylinder 7 rotates, and the plate cylinder 7 is connected to the upper blanket cylinder 5. It is thrown into the body against the opponent. Moreover, in the case of removing the body, the process is performed in the reverse order.

However, in such a conventional ink supply device, when the plate cylinder 7 is in the unloaded state during printing, the cam lever 25 escapes and the ink inlet 29 is pressed, so that the plate cylinder γ is The ink form roller 9 will be pressed with a pressure greater than the normal contact pressure when the ink form roller 9 is inserted, and there is a risk that the durability of the ink form roller 9 will be reduced due to the overpressure. When the plate cylinder 7 is loaded, the contact pressure of the ink port 29 changes, resulting in a problem in that printing problems such as shock marks are likely to occur.

Therefore, as shown in FIG. 3, by providing a bolt-type stopper 30 on the roller arm 28 and bringing it into contact with the outer periphery of an eccentric bearing 31 that pivotally supports the plate cylinder 1, the movement of the ink forming roller 9 is prevented. It has been proposed to avoid the above-mentioned overpressure by following the movement of the entire plate cylinder, but in this case, skill is required to adjust the stopper 3o, and it is impossible to perform this FJMi while driving. In addition, the tip of the stopper 3o or the outer circumferential surface of the eccentric bearing 31 may have worn out in a short period of time, making adjustment difficult, or the direction of movement of the plate cylinder 7 and the stopper 3o may have become difficult to adjust.
There were many problems, such as difficulty in maintaining a constant contact pressure due to the axial direction of the zero being misaligned.

The present invention has been made in view of the above points, and includes a cam f for attaching and detaching an ink forming roller to and from the upper plate cylinder, and a cam f formed in three stages and fitted to a concentric portion of the plate cylinder of an eccentric bearing for the upper plate cylinder. This cam and the eccentric bearing for the lower plate cylinder are connected by a link mechanism including a fluid cylinder, and the rotation of this eccentric bearing and the expansion and contraction of the fluid cylinder allow the four-wheel attachment/detachment cam to be moved in two stages, before and after insertion into the cylinder. By rotating the ink forming roller, changes in the contact pressure of the ink forming roller against the plate cylinder before and during the printing operation are reduced, and overpressure is avoided, improving the durability of the ink forming roller and printing problems. An object of the present invention is to provide an ink supply device for a printing press that can prevent the above problems with a simple configuration. Embodiments of the present invention will be described in detail below with reference to the drawings.

This embodiment shows an example in which the present invention is applied to a single-color double-sided printing offset rotary printing press. 7 Figure 4 is a side view of the outside, Figure 5 is a developed plan view with one part cut away, and Figure 6 is a partially cutaway plan view. FIG. 7 is a side view of the vicinity of the ink forming roller. Of the two printing cylinder attachment/detachment devices described above, this device is applied to the latter device that attaches and detaches the plate cylinder to the gono cylinder, and is applicable to the overall configuration of the printing press and Since the order of attaching and detaching the trunk has been explained with reference to FIG. 1, the explanation thereof will be omitted, and will be explained later using the same figure when necessary. In these figures, in the frame 41 of the printing unit 2, there is an eccentric bearing 42 with a flange, in which the axis F of the outer circumferential circle 42a and the axis F+ of the inner circumferential circle 42b are eccentric by an amount indicated by the symbol t in the figures. Outer circumference circle 42a
The plate cylinder T is rotatably supported on the inner circumferential circle 42b. A rod 44 pivotally attached to the flange of the eccentric bearing 42 extends downward, and its lower end is pivotally attached to a lever with a roller (not shown), which receives signals from the paper feed side and a manual valve button. The eccentric bearing 42 is rotated by moving the eye vertically back and forth via an air cylinder and a cam, and the plate cylinder T is attached to and detached from the upper blanket cylinder 5 due to the eccentric action of the eccentric bearing 42. . A pair of swing rollers 45 are disposed above the plate cylinder 7 and are supported by the left and right frames 41. At both ends of each swing roller 45, as shown in FIG. 6 and FIG. Two sets of low arms, each consisting of a roller arm 46 formed in an L shape and a roller arm 4γ that does not bend in an L shape, are freely mounted adjacent to each other, and are prevented from moving in the axial direction by a nut 48. regulated. In addition, these 4-2 arms 46.4
1 has a different shape but the structure is the same, so only the roller arm 46 is shown in FIG. 4, and only the roller arm 46 side will be described thereafter. The roller arm 46 is
One free end is formed in a split-shape shape, and a roller holder 49 formed in three stages by a bearing part 49a, a shaft support 49b, and a fitting part 49c is installed in the shaft hole of this split part. The shaft support 49b is pivotally supported and fixed by split tightening. In this roller boulder 49, the axis F2 of the bearing part 49&, the fitting part 49c, which are concentric, and the axis F3 of the shaft support 49b are eccentric by an amount indicated by the symbol 1+ in the figure, and the bearing part 49aK is Ink forming roller 9
is rotatably supported with its circumferential surface facing the circumferential surface of the plate cylinder 7. A bearing pin 50 formed in a step shape is capped on the bent fitting part 49c and fixed with a positive screw.After loosening the split line of the roller arm 46, a spanner is applied to the hole in the bearing pin 50. By rotating the ink forming roller 9, the ink forming roller 9 is rotated eccentrically due to an eccentric action, and the contact pressure against the swinging roller 45 and the plate cylinder 7 is set in accordance with the thickness of the ink forming roller 9. Further, the small diameter portion and the large diameter portion of the bearing pin 50 are eccentric by an amount equal to the eccentricity amount indicated by the reference numeral 11, and the bearing pin 50 is in a state where its eccentric phase is the same as the eccentric phase of the opening-ra holder 49. A cam follower 51 is fitted and fixed to the small diameter portion of the roller 9, that is, the small diameter portion concentric with the inking roller 9. The one indicated by reference numeral 52 has a spring shaft that is fixed to the frame 41 with bolts and is slidably supported by a protruding post 53, and its lower end is connected to the other free end of the roller arm 46 with a pin 54. A compression coil spring 55 is mounted on the spring shaft 52 for applying a rotational force to the roller arm 46 in the direction of pressing the ink inlet port 29 against the plate cylinder 7 . An adjusting nut 56 for adjusting the contact pressure of the inking roller 9 against the plate cylinder 7 is screwed onto the threaded portion of the spring shaft 52 protruding from the ridged post 53. In C, a groove is provided to engage the protrusion of the locking plate spring 57.

The ink form roller device configured in this manner is provided with a detachable device for attaching and detaching the ink form roller 9 to and from the plate cylinder I. Cam 60 and this [L? It is composed of a drive device 61 that moves once. Roller attachment/detachment cam 6
0 is integrally formed with a disc-shaped cam body and a boss fitted into the circular hole and fixed with a set screw, and the boss is connected to the eccentric bearing 42 that protrudes inward of the frame 41. It is rotatably fitted into the outer circumferential stepped portion 42c. The outer peripheral stepped portion 42c is formed concentrically with the inner circular axis F+ of the eccentric bearing 42, that is, the axis of the plate cylinder 7.

The cam body has three elongated holes 62 extending in the circumferential direction.
A bushing 63 with a flange, which is drilled in equal parts and fitted into the elongated hole 62, is fixed to the frame 41 with bolts. By doing this, the roller attachment/detachment cam 60 is restricted from moving in the axial direction, and by making the outer diameter of the bushing 63 sufficiently smaller than the inner diameter of the elongated hole 62, eccentric movement of the plate cylinder 7 is prevented. It is configured so that it can follow and move. The outer cam surface of the roller attachment/detachment cam 60 mounted in this manner has a large diameter portion 60a and a medium diameter portion 60 for each ink forming roller 9.
b and a small diameter portion 60c, it is formed in three steps,
The diameter of each part is set as follows. That is, the large diameter portion 60a is a cam surface that makes the cam follower 51 come into contact with the plate cylinder 7 when the plate cylinder 7 is removed from the plate cylinder 5, and at this time, the ink forming roller 9 is removed from the plate cylinder 7. They are set to be separated. Also, the middle diameter part 60bi,j:,
It is a cam surface that brings the cam follower 51 into contact with the cam follower 51 just before the plate cylinder 7 is inserted into the blanket cylinder 5 and during the insertion operation, so that the ink inlet 29 is in pressure contact with the plate cylinder 7 at this time. It is set. Note that the cam follower 51 is located at the large diameter portion 6.
The roller arm 46 compresses the compression coil spring 55 when it is in contact with the middle diameter portion 60b and the adjusting nut 56, and a gap is formed between the adjustment nut 56 and the post 53.

Furthermore, the small diameter portion 60c is a cam surface that is brought into contact with the camfoil 51fK when the plate cylinder 1 is completely inserted into the blanket cylinder 5, and at this time, the ink forming roller 9 is pressed against the plate cylinder 1. 1 Natsuto 56 is Bost 5
3, and the ink port 259 is pressed against the plate cylinder T by a spring pressure set in advance by a compression coil spring.

The drive device 61 that drives the rotation of the roller attachment/detachment cup 60 configured as described above includes an air cylinder 64 and a 9
The air cylinder 64 is rotatably supported by a pin 66 on the outer periphery of an eccentric bearing 65 that pivotally supports the lower blanket cylinder 6 disposed below and in opposition to the upper blanket cylinder 5. .

In addition, in the eccentric bearing 65, the axis 9F4 of the outer circumferential circle 65a which is pivotally supported by the frame 41 in the same way as the eccentric bearing 42 and the axis F6 of the inner circumferential circle 65b which pivotally supports the rubber cylinder 6 are indicated by the symbol t2 in the figure. Only being eccentric. A rod end 68 screwed to the working end of the piston condo 6F0 of the air cylinder 64 is connected to a lever 70 that projects in the radial direction from the tip of a lever shaft 69 rotatably mounted between the left and right frames 41. The L/bar shaft 69 is pivotally connected to the free end of the piston rod 67 and is configured to reciprocate in forward and reverse directions as the p1 piston rod 67 expands and contracts.

A bracket 71 is fixed to the frame 41 and supports the protrusion of the lever shaft 69. The lever shaft 69 and the roller attachment/detachment cam 60 are connected in a link-like manner by a lever T2 fixed to the lever shaft 69 and a connecting rod T5 whose both ends are pivotally connected by pins 73 and 74. By doing this, the roller attachment/detachment cam 60 rotates by fully rotating the eccentric bearing 65 and by expanding and contracting the piston rod 67'ff of the air cylinder 64, but the rotation center of the air cylinder 64 is The relationship between the position of the pin 66, the r-ra attachment/detachment cup, the phase of 60, etc. is set as follows.

That is, when the eccentric bearing 65 is rotated to remove the lower blanket cylinder 6 from the upper blanket cylinder 5, the pin 66 is moved to the fourth position.
Move from 66a to 66c 1 in the figure [7, end of movement 66
The phase of pin 66 is set so that it crosses the dead center just before c. That's right, r for cam follower 51
The opposing position of the j-ra attachment/detachment cup 60 is that the pin 66 is at 66a.
The phase is set so that when the pin 66 is at the position 66b and 66c, it is the small diameter part 60c, and when the pin 66 is near the dead center, 66b and 66c, it is the medium diameter part 60b. From the medium diameter part 60b to the large diameter part 6
The roller attachment/detachment pin 60 is rotated by the expansion and contraction of the piston rod 67 to move the pin 66 to 0a.
The timing is set so that when bK is reached 7, the axis Fl of the upper plate cylinder 7 is moved by another cam mechanism via the rod 44 and the eccentric bearing 42, and removed from the upper blanket cylinder 5. has been done.

The operation of the ink supply device configured as above will be explained. Prior to printing, the plate cylinder T, lower blanket cylinder 6, and ink forming roller 9 are manually inserted, and then the ink is applied to the plate cylinder 7 by fully rotating the nut 56 and expanding and contracting the compression coil spring 55. Fully adjust the contact pressure at port 29. After rotating the eccentric cam 65 to move the position of the pin 66 from the point 66a to the point 66b, the secant of the roller arm 46.47, which is the shaft support of the ink form roller 9, is loosened, and the bearing bin 50 is completely moved. The contact state between the cam follower 51 and the cam 60 that matches the diameter of the ink layer 9 is adjusted by rotating it. Then, manually press the plate cylinder 7 against the blanket cylinder 5.
The inking roller 9 is removed from the plate cylinder 7, and the lower blanket cylinder 6 is removed from the upper blanket cylinder 5 and the lower plate cylinder 8. FIG. 4 shows this state, where the pin 66 is at a point 66c near the dead center and the piston rod 67 is extended. Therefore, the cam follower 51 is in contact with the large diameter portion 60a of the roller attachment/detachment cam 60, and the ink forming roller 9 is spaced apart from the plate cylinder 1.

In this state, when the cylinder attachment/detachment is switched to automatic and printing work is started, the Amazuma air cylinder 64 is actuated by a signal from a timing regulation device (not shown) and the piston rod 67 is contracted, so that the roller attachment/detachment cam 60 is activated via the link mechanism. (2) The cam follower 51 rotates counterclockwise in FIG. 4 on the outer circumferential surface 42c of the center bearing 42, and the cam follower 51 comes into contact with the middle diameter portion 60b of the cam 60. Therefore, the ink application roller 9 is pressed against the plate surface of the plate cylinder 1 by the swinging of the roller arms 46, 47 due to the elastic force of the compression coil spring 55, and ink is supplied. In this case, since the medium diameter portion 60b serves as a stopper, the contact pressure at the ink inlet 29 does not become excessive. A moment later, the eccentric bearing 65 of the lower blanket cylinder 6 begins to rotate counterclockwise in FIG. 4 for cylinder insertion, and the pin 66 passes the dead center and reaches a point 66b. At this time, the eccentric bearing 42 of the plate cylinder T is rotated by another mechanism, and the plate cylinder is inserted into the upper blanket cylinder 5 due to its eccentric action. In this case, pin 66
Even if it moves, the movement component of the air cylinder 64 in the axial direction can be ignored before and after the dead center, so the roller attachment/detachment cam 60 does not rotate and the cam follower 51 moves toward the middle diameter portion 60bll. ? Z is tangential. Further, the ink attachment/detachment cam 60 is fitted into the outer circumferential portion 42c concentric with the plate cylinder 7, and moves eccentrically following the movement of the plate cylinder 7, so that the ink forming roller 9 and the plate cylinder 7 are connected before and after insertion. Since the relative position does not change, the contact pressure of the ink deposit [1-29] does not change.

Furthermore, as the roller attachment/detachment cam 60 rotates, the elongated hole 62 is displaced relative to the bolt fixed to the υ frame 41, but by making the bushing 63 a sufficiently smaller diameter than the elongated hole 62, this interlocking movement can be prevented. There is no hindrance. Note that the adjustment nut 56, which was separated from the post 53 before the plate cylinder insertion, is removed from the plate cylinder 7.
When the body insertion is completed, the gap with the post 53 disappears.

After the plate cylinder 1 has been inserted, the eccentric bearing 6 of the lower plate cylinder 6
5 continues to rotate for loading, and the bottle 66 moves from point 66b to point 66a. Therefore, the roller attachment/detachment cam 60 further rotates via the link mechanism including the air cylinder 64 while the piston rod 67 is contracted, and the cam 7 lower 51 comes into contact with the small diameter portion 60c. in this case,
Since the ink inlet 29 is in pressure contact with the plate cylinder 7, the roller arms 46, 47 do not rotate any further, the cam follower 51 is separated from the small diameter portion 60c of the cam surface, and the adjusting nut 56 is Since it is still in contact with the post 53, a predetermined contact pressure preset in the compression coil spring 55 is applied to the ink inlet 29.

As the eccentric bearing 65 rotates in this manner, the lower blanket cylinder 6 is inserted into the upper blanket cylinder 5 and the lower plate cylinder 8, thereby completing the entire insertion operation. Then, in parallel with the ink being supplied to the printing plate, dampening water is supplied from the water supply device to form an image on the printing plate, which is transferred to the upper and lower blanket cylinders 5 and 6 and onto the paper passing between them. On the other hand, double-sided printing is performed.

Then, when the printing operation is completed or when paper feeding is stopped due to a paper feeding error or the like, the barrel removal is performed in the completely reverse order of the barrel insertion in response to a signal from the timing regulating device. That is, the lower blanket cylinder 6 is removed, the cam 60 is rotated to the medium diameter portion 60b, the cylinder 1 is removed, the bottle 66 is moved beyond the dead center, and the piston rod 67 is extended to the large diameter portion 60a of the cam 60. The rotation of the ink port 29 and the removal of the ink port 29 are performed in this order. In the case of cylinder removal, as in the case of cylinder insertion, the roller attachment/detachment cam rotates at the same time as the plate cylinder T is removed, and the cam 7 roller 51 comes into contact with the medium diameter portion 60b of the cam surface, so that the ink forming roller 9 It follows the movement of the plate cylinder 7 and escapes from the plate cylinder T, so that the contact pressure does not become excessive.

Although this embodiment shows an example in which the present invention is applied to a single-color printing press, it can also be applied to a multi-color printing press.

As is clear from the above description, according to the present invention, in the ink supply device of a printing press, the cam for attaching and detaching the ink form roller to and from the upper plate cylinder is formed in a three-stage shape, and one part of the plate cylinder is provided with an eccentric bearing. This cam is fitted to the concentric part of the plate cylinder, and this cam and the eccentric bearing for the lower plate cylinder are connected by a link mechanism that holds the fluid cylinder, and the roller attachment/detachment cam is inserted into the body by the rotation of this eccentric bearing and the expansion and contraction of the fluid cylinder. By rotating the ink form roller in two steps before and after the first plate cylinder, the contact pressure of the ink form roller does not become excessive when the first plate cylinder is attached and removed, and the durability of the ink form roller is significantly improved. The ink application roller moves to follow the movement during attachment and detachment.1. Since the tangential insect pressure of the ink forming roller does not change before and after the body check, printing failures such as shock eyes can be prevented and the quality of printed matter can be improved. In addition, the eccentric bearing for attaching and detaching the lower plate cylinder is cleverly used to drive part of the ink form roller attachment and detachment operation, which simplifies the structure and shortens the stroke of the fluid cylinder for attachment and detachment. Therefore, it can be made smaller.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of a single-color double-sided printing offset rotary printing press, Figs. 2 and 3 are side views of a conventional ink supply device, and Figs. An embodiment of the supply device is shown, and FIG. 4 is a side view thereof;
FIG. 5 is a partially cut-away developed plan view, FIG. 6 is a partially cut-away view of the rolling pressure surface, and FIG. 7 is a side view of the vicinity of the ink forming roller. 5... Upper rubber cylinder, 6... Lower rubber cylinder, 7...
... Upper plate cylinder, 8... Lower plate cylinder, 9... Ink forming roller, 26.27"... Roller arm, 42...
...Eccentric bearing, 42C...Outer peripheral step, 51...
Cam 7 oror, 52... Compression coil spring, 56φ.
・Φ nut, 60... Roller attachment/detachment cam, 60a ・
...Fist large diameter part, 60b ...Medium diameter part, 60c
... ・Small diameter part, 64・Φ・O air cylinder, 65・
...Fist eccentric bearing, 70...Lever, 72...Lever, 75...Connection rod. Patent applicant: Komori Printing Press Co., Ltd. Agent: Masaki Yamakawa (and one other person) Figure 5 Figure 6 1981 Patent Application No. 116565 29 Name of invention Printing press ink supply device 3 Person making the amendment Relationship to the case Patent Applicant name (name)
Komori Printing Machinery Co., Ltd. (amend claims 11 to a separate document. (2) "Upper blanket cylinder 5 and..." in lines 12 to 14 of page 5 of the specification. "Therefore," is corrected as follows. "The upper rubber cylinder 5 is removed, and then the lower rubber cylinder 6 is removed.
from the lower plate cylinder 8, and the upper plate 111i17 from the upper blanket cylinder 5.
(3) Same page 8 rA8
Correct the line "Eccentric bearing for lower plate cylinder" to "Eccentric bearing for lower blanket cylinder." (4) Correct "eccentric cam 65" in line 7 of page 17 to "1 eccentric bearing 65". (5) In Section 17n, lines 9 to 10, "Loosen the secant of the roller arm 46, 47, which is the pivot support," is corrected to "Loosen the set screw of the bearing pin 50." (6) In the 5th to 4th lines from the bottom of page 18, "point 66b has been reached." has been corrected to "point 66b has been reached, and the lower blanket cylinder 6 is inserted into the lower plate cylinder 8." do. (7) "Lower plate cylinder 6" in the 5th line from the bottom of page 19 is corrected to "lower blanket cylinder 6." (8) On page 20, lines 10 to 11, “and lower plate cylinder 8
Delete "and". (9) ``Lower blanket cylinder 6...beyond the dead center of bottle 66'' in the first line from the bottom of page 20 to the second line of page 21 is corrected as follows. "The lower rubber cylinder 6 is removed from the upper rubber cylinder 5 and the cam 6
0 to the middle diameter portion 60b, the upper plate cylinder 7 is removed, the lower blanket cylinder 6 is removed from the lower plate cylinder 8, and the bottle 66 crosses the dead center.'' ``For attaching and detaching the lower rubber body'' is corrected to ``For attaching and detaching the lower rubber body.'' 01) Correct Figure 3 as shown in the attached sheet. (Correction of Fig. 4 of 121 as per redline in attached sheet. Above attached) The upper plate cylinder is supported by a paper eccentric bearing and is attached to and detached from the upper blanket cylinder by the rotation of this eccentric bearing, and the roller arm which can swing freely. An ink forming roller is supported and attached to and detached from the upper plate cylinder by the swinging of the roller arm, and an ink forming roller is supported by an eccentric bearing and attached to and detached from the lower blanket cylinder and the lower plate cylinder by rotation of the eccentric bearing. In a printing press equipped with a lower blanket cylinder, the roller arm side cam 7 has an outer circumferential cam surface that contacts the roller arm side, and is rotatably fitted in a concentric circle of the plate cylinder of an eccentric bearing that pivotally supports the upper plate cylinder. a roller attachment/detachment cam equipped with the roller arm, and an ink form roller contact pressure adjusting means having a spring portion side that applies rotational force to the roller arm in the direction of pressing the cam follower against the cam surface, and ,”
A large diameter part that separates the ink application roller from the upper plate cylinder by making the cam followers face each other when removing the body of a two-part plate, and a large diameter part that makes the cam followers face each other just before the upper plate cylinder is inserted and during the body insertion operation to apply the ink. The roller is formed in a three-stage shape, with a medium diameter portion facing the upper plate cylinder and a small diameter portion opposing the cam 7 roller with a gap when the upper plate cylinder is completely loaded, and the ink attachment/detachment. The cam and the eccentric bearing for the lower blanket cylinder are connected by a link mechanism including a fluid cylinder, and the two-stage rotation of the ink attachment/detachment cam is performed by the rotation of the eccentric bearing for the lower blanket cylinder and the expansion/contraction of the fluid cylinder. An ink supply device d0 of a printing press configured to be driven step by step;

Claims (1)

[Claims] The upper plate cylinder is supported by an eccentric bearing and is attached to and detached from the upper blanket cylinder by the rotation of the eccentric bearing, and the upper plate cylinder is supported by a swingable roller arm and is attached to and detached from the upper blanket cylinder by the swing of the roller arm. and a lower blanket cylinder which is rotatably supported by an eccentric bearing and which is attached to and detached from the upper blanket cylinder and the lower plate cylinder by rotation of the eccentric bearing. a roller attachment/detachment cam rotatably fitted in a plate cylinder concentric circle of an eccentric bearing that pivotally supports the upper plate cylinder, and the cam follower is pressed against the cam surface; and a contact pressure adjusting means for the ink forming roller, which includes a spring member that applies rotational force to the roller arm in a direction in which the roller arm rotates. a large-diameter portion that separates the upper plate cylinder from the upper plate cylinder, a medium-diameter portion that brings the ink forming roller into contact with the upper plate cylinder by bringing the cam 7 roller into contact with the upper plate cylinder immediately before and during the cylinder-loading operation, and the upper plate cylinder. A link mechanism including a fluid cylinder is formed in three steps with a small diameter portion facing the cam follower with a gap when the plate cylinder is completely loaded, and the ink attachment/detachment cam and the eccentric bearing for the lower plate cylinder are connected. , and the two-step rotation of the ink attachment/detachment cam is driven one step each by the rotation of the eccentric bearing for the lower plate cylinder and the expansion/contraction of the fluid cylinder. Feeding device.