JPH0426310B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-sided printing press, and more particularly to a blanket cylinder and plate cylinder loading mechanism.

[Conventional technology]

Generally, double-sided printing machines are known that have two printing machines installed side by side, each equipped with a blanket cylinder, a plate cylinder, and an impression cylinder, but such printing machines tend to have large equipment. There are some problems.

Therefore, the method shown in Utility Model Application No. 55-86816 has been proposed. Since the two rubber cylinders also function as impression cylinders, the structure is simple and compact.

[Problem that the invention seeks to solve]

However, in the device shown in the above-mentioned Utility Application No. 55-86816, the rubber cylinder and the plate cylinder are inserted and removed in synchronization, so the insertion and removal of each cylinder is performed simultaneously. There is a problem in that it cannot be carried out in the notch and waste paper is generated.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a double-sided printing press in which each cylinder can be inserted and removed at each notch.

[Means for solving problems]

The present invention includes a first rubber cylinder whose holding position is fixed, and a first rubber cylinder that is provided so as to be able to come into contact with and separate from the first rubber cylinder.
a second blanket cylinder, which is provided on the opposite side of the first blanket cylinder and is movable toward and away from the first blanket cylinder;
A blanket cylinder, and a second plate cylinder that is provided on the opposite side of the first blanket cylinder with respect to the second blanket cylinder and that can be brought into contact with and separated from the second blanket cylinder, and the printing paper is placed between the two blanket cylinders. In the supplied double-sided printing machine, a body insertion cam is provided concentrically on the first blanket cylinder, and the movement of the body insertion cam is transmitted to the eccentric shaft of the second blanket cylinder, and the movement of the body insertion cam is transmitted to the eccentric shaft of the second blanket cylinder. A first link mechanism section for loading and unloading the printing paper, a paper feed detection device for detecting the supply of printing paper, and a movement of the first link mechanism section is controlled by a signal from the paper feed detection device. a first link mechanism actuator that activates and deactivates the first link mechanism; and a first blanket cylinder of the first plate cylinder that transmits the movement of the body insertion cam to the eccentric shaft of the first plate cylinder. a second link mechanism for inserting and removing the blanket from the second blanket cylinder; A third link mechanism section for performing extraction; and a third link mechanism section provided branching from the first link mechanism section, and locking the second link mechanism section in conjunction with the movement of the first link mechanism section. A fourth link mechanism section into which the first plate cylinder is inserted; and a fourth link mechanism section that is provided branching off from the first link mechanism section and locks the third link mechanism section in conjunction with the movement of the first link mechanism section. and a fifth link mechanism portion into which the second plate cylinder is inserted.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a schematic diagram of a double-sided printing machine according to the present invention. Reference numeral 1 in the figure is a frame of the printing press, and a paper feeder 5 is located at the upper right of the frame 1 in the figure.
5 are arranged. Further, a paper feed tray 91 for conveying printing paper is provided on the paper feed side (left side in the figure) of this paper feed device 55, and downstream of this paper feed tray 91, the first blanket cylinder 2 and the first rubber cylinder 2 are provided. Two rubber cylinders 5 are rotatably provided. Further, downstream of the first and second blanket cylinders 2 and 5 (on the left side in the figure), a chain delivery 92 for conveying printing paper is provided, and a paper discharge device 56 is provided. Further, below the chain delivery 92 in the figure, a paper discharge tray 44 is provided to receive printed paper. Further, a first plate cylinder 4 is in contact with the first blanket cylinder 2, and a first inking device 45 and a first moisturizing device 46 are connected to the first plate cylinder 4 via a plurality of rollers. It is connected. Further, in the vicinity of the first plate cylinder 4, a first plate feeding device 47 for supplying plates to the first plate cylinder 4 is arranged. Further, on the opposite side of the first plate feeding device 47 with respect to the first plate cylinder 4, a first plate discharging device 49 for discharging the plate is disposed. On the other hand, a second plate cylinder 8 is in contact with the second blanket cylinder 5, and a second inking device 50 and a second moisturizing device 51 are connected to the second plate cylinder 8 via a plurality of rollers. It is connected. Further, in the vicinity of the second plate cylinder 8, a second plate feeding device 52 that supplies plates to the second plate cylinder 8 is disposed. Further, on the opposite side of the second plate feeding device 52 with respect to the second plate cylinder 8, there is a second plate discharging device 54 for discharging the plate.
is being discharged. In addition, the first and second rubber cylinders 2,
5 are provided with first and second blanket cleaning devices 48 and 53 for cleaning each blanket cylinder, respectively.

By the way, the first rubber cylinder 2, the second rubber cylinder 5,
The first plate cylinder 4 and the second plate cylinder 8 are configured to be able to move toward and away from each other, and the approaching and separating drive mechanism will be described in detail with reference to FIG.

A first blanket cylinder shaft 3 is provided concentrically at both ends of the first blanket cylinder 2, and a blanket insertion cam 10 is fixed to the first blanket cylinder shaft 3. This body cam 1
0, and frame 1 has stud axis 1.
2 is fixed, and an arm 15 is swingably provided on this stud shaft 12. A cam follower 15a that can come into contact with the cam surface of the body insertion cam 10 is rotatably provided at one end of the swing arm 15. Further, one end of a dart 23 is pivotally attached to the other end of the arm 15. This dart arrow 2
An arm 62 is rotatably provided near the other end of the stud shaft 61 fixed to the frame 1. When the dart 23 pushes pins 62a and 62b of the arm 62, the arm 62 rotates. is configured to operate. The arm 62 has a link 24
One ends of the two links 39 and 39 are pivotally connected. An end of an arm 18 projecting from an eccentric shaft 7 provided on the second rubber cylinder 5 is pivotally attached to the other end of one link 24. here,
Arm 15, dart 23, arm 62, link 2
4. The arm 18 constitutes a first link mechanism section.

The other end of the other link 39 is connected to the stud shaft 3.
It is pivotally connected to an arm 36 which is rotatably provided at the base 5. One end of a link 37 is pivotally attached to the arm 36, and a latch 32 rotatably provided on the stud shaft 34 is pivotally attached to the other end of the link 37. An arm 19 having an engaging portion 19a that can be engaged with the latch portion of the latch 32 is fixed to the eccentric shaft 9 of the second plate cylinder 8. Further, the arm 19 and the latch 32 are each provided with a spring 4.
1 and 43 are provided so that the arm 19 and the latch 32 are biased in the direction away from each other. Here, link 39, arm 36,
The link 37, latch 32, and arm 19 constitute a fifth link mechanism section.

Further, one end of a link 38 is pivotally attached to the arm 36, and a latch 3 rotatably provided on the stud shaft 33 is attached to the other end of the link 38.
1 is pivoted. An arm 17 having an engaging portion 17a that can be engaged with the latch portion of the latch 31 is fixed to the eccentric shaft 6 of the first plate cylinder 4. Also,
The arm 17 and the latch 31 are provided with springs 40 and 42, respectively, which bias the arm 17 and the latch 31 in directions away from each other. Here, the link 39, arm 36, link 38, latch 31, and arm 17 constitute a fourth link mechanism section.

On the other hand, an arm 14 is provided next to the arm 15 of the casing cam 10 fixed to the first blanket cylinder 2 in the clockwise direction in the figure, and is rotatable on a stud shaft 11. A cam follower 14a that can come into contact with the cam surface of the body insertion cam 10 is rotatably provided at one end of the cam follower 14a. Further, one end of a link 20 is pivotally connected to the other end of the arm 14, and a stud shaft 63 is attached to the other end of the link 20.
One end of an arm 21 that is rotatably provided is pivotally attached to the arm 21 . One end of an adjustment rod 22 whose length can be adjusted (expanded and contracted) is pivotally attached to the other end of the arm 21.
The other end of the adjusting rod 22 is pivotally connected to an arm 17 fixed to the eccentric shaft 6 of the first plate cylinder 4. Here, arm 14, link 20, arm 21, adjustment rod 2
2. The arm 17 constitutes a second arm mechanism section.

Further, an arm 16 is provided next to the arm 15 of the body insertion cam 10 in a counterclockwise direction in the drawing so as to be rotatable on the stud shaft 13. A cam follower 16a that can come into contact with the cam surface of the cam follower 16a is rotatably provided. Also, a link 2 is provided at the other end of the arm 16.
One end of the link 25 is pivotally connected, and one end of an arm 26 rotatably provided on a stud shaft 64 is pivotally connected to the other end of the link 25. This arm 2
One end of a link 27 is pivotally connected to the other end of 6.
One end of an arm 66 rotatably provided on a stud shaft 65 is pivotally connected to the other end of the link 27 . One end of an adjustment rod 28 whose length can be adjusted (expanded and contracted) is pivotally connected to the other end of the arm 66, and the other end of the adjustment rod 28 is attached to an arm 19 fixed to the eccentric shaft 9 of the second plate cylinder 8. It is pivoted to. Here, the third
A link mechanism section will be constructed.

On the other hand, one end of a link 30 is pivotally attached to the intermediate portion of the dart 23 that constitutes the first link mechanism, and the other end of this link 30 is connected to a solenoid 29 that is the actuator of the first link mechanism. It is connected.
Furthermore, this solenoid 29 is connected to a paper feed detection device (not shown) such as a phototube.

Further, the arm 17 and latch 31 on the side of the first plate cylinder 4 are provided with springs 40 and 42, respectively, to bias the arm 17 and the latch 31 in the direction away from each other. moreover,
The arm 19 and latch 32 on the second plate cylinder 8 side are provided with springs 41 and 43, respectively.
Arm 19 and latch 32 are biased away from each other.

Further, a link 67 is fixed to the eccentric shaft 6 of the first plate cylinder 4, and one end of an arm 68 rotatably provided on the stud shaft 33 is pivotally connected to the end of this link 67. . A shaft 69 is pivotally attached to the other end of the arm 68. This shaft 69 passes through a block 70 fixed to the frame, and the shaft 69
A double nut 71 is screwed into the end of the holder. Further, a nut 72 is screwed between the block 70 of the shaft 69 and the arm 68, and a spring 74 is wound around the shaft 69 via spring receivers 73, 73 between the block 70 and the nut 72. has been done. In this way, the plate pressure adjustment mechanism is configured.

Further, one end of an arm 76 rotatably provided on a stud shaft 75 is fixed to the eccentric shaft 7 of the second blanket cylinder 5, and a shaft 77 is fixed to the other end of this arm 76.
is pivoted. This shaft 77 passes through a block 78 fixed to the frame, and a double nut 79 is screwed into the end of the shaft 77. Also, the shaft 77
There is a nut 8 between the block 78 and the arm 76.
0 is screwed on, block 78 and nut 80
A spring 82 is inserted between the spring receivers 81 and 81.
is wound around the shaft 77. In this way, the rubber cylinder pressure adjustment mechanism is configured.

Further, a link 83 is fixed to the eccentric shaft 9 of the second plate cylinder 8, and one end of an arm 84 rotatably provided on the stud shaft 34 is pivotally attached to this link 83. Furthermore, a shaft 85 is pivotally attached to the other end of this arm 84, and has a configuration similar to that of the plate pressure adjustment mechanism described above.

Reference numeral 57 in the figure is a link which is moved upward by a manual lever (not shown) to operate the latches 31 and 32 to a position where they can be locked with the arms 19 and 17 via the arm 36. be. This is because ink is transferred from the plate cylinder to the blanket cylinder at the start of printing, etc., so the second blanket cylinder 5 is not inserted into the first blanket cylinder 2, and the first and second blanket cylinders 2,
The first and second plate cylinders 4 and 8 are inserted into the plate cylinder 5.

Note that FIG. 7 is a diagram showing the arrangement positions of the arms 15, 14, and 16 around the body insertion cam 10.
In this way, the cam follower 15a and the cam follower 1
The angle between cam follower 14a and cam follower 16a is 150°, and the angle between cam follower 14a and cam follower 16a is 85°.
The angle between the cam follower 6a and the cam follower 15a is set to 125°. Thereby, each body insertion and body removal operation is adjusted to be performed at the notch position of each body.

First, the operation of the cylinder insertion and cylinder removal mechanism of the double-sided printing press constructed as described above will be explained.

First, when the barrel is not inserted at all, the dart 23 moves back and forth due to the rotation of the barrel insertion cam 10, but this movement is not transmitted to the arm 62 because the solenoid 29 is not activated. Further, as the body inserting cam 10 rotates, the arm 17 rotates via the arm 14 etc., and the arm 19 rotates via the arm 16 etc., and the first plate cylinder 4 rotates.
The second plate cylinder 8 moves toward and away from the first blanket cylinder 2 and the second blanket cylinder 5, respectively, and this movement toward and away from each other is performed at the notch position of each cylinder, as described above. The positions of arm 14 and arm 16 are adjusted as shown in FIG.

When inserting the paper in this state, when a paper detection device (not shown) detects printing paper, a detection signal is sent to the solenoid 29, and the link 30 is moved to the left in the figure. In this state, when the arm 15 is rotated clockwise about the stud shaft 12 by the body insertion cam 10. The dart 23 presses the pin 62b of the arm 62, causing the arm 62 to rotate counterclockwise about the stud shaft 61. Then, the link 24 is moved in the direction of arrow C in the figure, and the arm 18 is rotated counterclockwise about the eccentric shaft 7. As a result, the second blanket cylinder 5 is inserted into the first blanket cylinder 1. At this time, as shown in FIG. 3, the body insertion cam is used so that the body is inserted when the positions of the notch 2a of the first blanket cylinder 2 and the notch 5a of the second blanket cylinder 5 are opposite to each other. 10 has been adjusted.

Also, since the arm 62 rotates counterclockwise around the stud shaft 61, the link 39 moves in the direction of arrow D in the figure, and the arm 36 rotates clockwise around the stud shaft 35 (in the direction of arrow B in the figure).
Rotate to. As a result, the link 37 moves in the direction of arrow E in the figure, and the latch 32 rotates clockwise about the stud shaft 34 against the biasing force of the spring 43. This causes the latch 32 to rotate to a position where it can engage with the engaging portion 19a of the arm 19. Note that FIG. 1 shows the state at this time.

Further, as the arm 36 rotates in the direction of arrow B, the link 38 moves in the direction of arrow E in the figure, and the latch 31 moves around the stud shaft 33 and springs 42.
It rotates counterclockwise against the urging force of. This causes the latch 31 to engage the engaging portion 17a of the arm 17.
It will rotate to a position where it can be engaged with. Note that FIG. 1 shows the state at this time.

Thereafter, when the body insertion cam 10 further rotates by 150 degrees in the direction of arrow A, the arm 14 is rotated counterclockwise about the stud shaft 11. Then, the link 20 moves in the direction of arrow C in the figure, and the arm 21
rotates counterclockwise around the stud shaft 63. As a result, the adjustment rod 22 moves in the direction of arrow H in the figure, and the arm 17 fixed to the eccentric shaft 6 rotates clockwise about the eccentric shaft 6. At this time, the arm 17 rotates while the engaging portion 17a of the arm 17 rotates the latch 31 slightly clockwise about the stud shaft 33. As a result, the engaging portion 17a of the arm 17 engages with the latch 31, as shown in FIG. 8, and the first plate cylinder 4 is inserted into the first blanket cylinder 2. Note that, as shown in FIG.
The positions of the inserting cam 10 and the arm 14 are adjusted so that the inserting cam 10 and the arm 14 are inserted when the positions of the cutout portion 4a of the first plate cylinder 4 and the cutout portion 4a of the first plate cylinder 4 are opposite to each other.

Thereafter, when the body insertion cam 10 further rotates by 85 degrees in the direction of arrow A, the arm 16 is rotated counterclockwise about the stud shaft 13. Then, the link 25 moves in the direction of arrow I in the figure, and the arm 26
rotates counterclockwise around the stud shaft 64. Accordingly, the link 27 moves in the direction of arrow J in the figure, and the arm 66 rotates counterclockwise about the stud shaft 65. As a result, the adjustment rod 28 moves in the direction of arrow K in the figure, and the arm 19 fixed to the eccentric shaft 9 rotates counterclockwise about the eccentric shaft 9. At this time, the engaging portion 19a of the arm 19 rotates the latch 32 slightly counterclockwise about the stud shaft 34, and
will rotate. As a result, as shown in FIG.
, and the second plate cylinder 8 is inserted into the second blanket cylinder 5. In addition, this body insertion operation is performed by moving the body insertion cam 1 so that the body is inserted when the positions of the notch 5a of the second blanket cylinder 5 and the notch 8a of the second plate cylinder 8 are opposite to each other.
0 and the positions of arm 16 have been adjusted.

In this way, the insertion of each cylinder is completed. In this state, by conveying the printing paper between the first blanket cylinder 2 and the second blanket cylinder 5, double-sided printing is performed.

The contact pressure and contact position between the respective shells after the shell insertion is completed are adjusted by nuts 72, 80 and double nuts 71, 79.

Next, when removing the cylinder, if the paper detection device (not shown) does not detect the printing paper, the solenoid 29
A signal to that effect is transmitted, and the link 30 is moved to the right in the figure. In this state, when the arm 15 is rotated clockwise around the stud shaft 12 by the body insertion cam 10, the dart 23 presses the pin 62a of the arm 62, causing the arm 62 to rotate around the stud shaft 61. Rotate clockwise as shown. Then, the link 24 is moved in the direction opposite to the direction of arrow C in the figure, and the arm 18 is rotated clockwise about the eccentric shaft 7. As a result, the second blanket cylinder 5 is removed from the first blanket cylinder 1. In addition,
At this time, as shown in FIG. 5, when the positions of the notch 2a of the first blanket cylinder 2 and the notch 5a of the second blanket cylinder 5 are opposite to each other, the body inserting cam 10 is moved so that the body is removed. is being adjusted.

Further, since the arm 62 rotates clockwise around the stud shaft 61, the link 39 moves in the direction opposite to the direction of arrow D in the figure, and the arm 36 rotates counterclockwise around the stud shaft 35. As a result, the link 37 moves in the direction opposite to the direction of arrow E in the figure, and the latch 32 is moved to the stud shaft 34.
With the help of the biasing force of the spring 43,
Rotate counterclockwise. By this, latch 3
2 is disengaged from the engagement portion 19a of the arm 19.

Furthermore, as the arm 36 rotates counterclockwise, the link 38 moves in the opposite direction to the direction of arrow F in the figure, and the latch 31 moves clockwise around the stud shaft 33 with the help of the biasing force of the spring 42. Rotate. This causes the latch 31 to
7 will be released from its engaged state with the engaging portion 17a.

Thereafter, when the body insertion cam 10 further rotates by 150° in the direction of arrow A, the arm 14 is rotated clockwise about the stud shaft 11. Then, the link 20 moves in the direction opposite to the direction of arrow G in the figure, and the arm 21 rotates clockwise about the stud shaft 63. As a result, the adjusting rod 22 moves in the direction opposite to the direction of arrow H in the figure, and the arm 17 fixed to the eccentric shaft 6 rotates counterclockwise about the eccentric shaft 6. As a result, the first plate cylinder 4 is removed from the first blanket cylinder 2. In this case, the position of the body insertion cam 10 and the arm 14 is adjusted so that the body is inserted when the notch 2a of the first blanket cylinder 2 and the notch 4a of the first plate cylinder 4 face each other. is being adjusted.

Thereafter, when the body insertion cam 10 further rotates by 85 degrees in the direction of arrow A, the arm 16 is rotated clockwise about the stud shaft 13. Then, the link 25 moves in the direction opposite to the direction of arrow I in the figure, and the arm 26 rotates clockwise about the stud shaft 64. Accordingly, the link 27 moves in the direction opposite to the direction of arrow J in the figure, and the arm 66 rotates clockwise about the stud shaft 65. As a result, the adjustment rod 28 moves in the direction opposite to the direction of arrow K in the figure, and the arm 19 fixed to the eccentric shaft 9 rotates clockwise about the eccentric shaft 9. As a result, the second plate cylinder 8 is removed by the second blanket cylinder 5.
Note that this body removal operation is performed in the second stage as shown in Fig. 6.
Notch 5a of blanket cylinder 5 and notch 8a of second plate cylinder 8
The positions of the body insertion cam 10 and the arm 16 are adjusted so that the body insertion cam 10 and the arm 16 are inserted when the positions of the two are opposite to each other.

In this way, the removal of each cylinder is completed.

〔Effect of the invention〕

By configuring the present invention as described above, the timing of inserting and removing the shells can be staggered, so that inserting and removing the shells can be performed at the notch of each shell. Further, since the body can be inserted and removed at the notch, it is possible to prevent waste paper from being generated. Furthermore, this configuration only needs to be installed on one side of the printing press, and has advantages such as being able to be downsized and manufactured at low cost.

[Brief explanation of drawings]

Figure 1 shows the case of the double-sided printing press according to the present invention;
A front view of the body removal mechanism, Figure 2 is a schematic diagram of a double-sided printing press, Figure 3 is an explanatory diagram of the action during body insertion, Figure 4 is an illustration of the action during body insertion, and Figure 5 is an illustration of the action during body removal. Fig. 6 is an explanatory diagram of the action when the trunk is removed, Fig. 7 is a diagram showing the arrangement of the arm around the trunk insertion cam, Fig. 8 is a diagram showing the state in which the arm is engaged with the latch, and Fig. 9 is a diagram showing the arm engaged with the latch. FIG. 6 shows the arm engaged with the latch. 1...Frame, 2...First blanket cylinder, 4...First plate cylinder, 5...Second blanket cylinder, 8...Second plate cylinder,
6, 7, 9...Eccentric shaft, 10...Body insertion cam, 1
4, 15, 16... Arm, 23... Charge arrow, 2
0, 24, 27... link, 21, 26... arm, 29... solenoid, 31, 32... latch.

Claims (1)

[Claims] 1. A first blanket cylinder whose holding position is fixed, a first plate cylinder provided so as to be able to approach and separate from the first blanket cylinder, and a first plate cylinder provided on the opposite side of the first blanket cylinder to the first blanket cylinder. , a second rubber cylinder that can be moved into and out of contact with the first rubber cylinder;
a second printing cylinder provided on the opposite side of the first blanket cylinder with respect to the second blanket cylinder and capable of coming into contact with and separating from the second blanket cylinder, and a double-sided printing paper is supplied between the two blanket cylinders; In the printing press, a blanket inserting cam is provided concentrically on the first blanket cylinder, and the movement of the blanket inserting cam is transmitted to an eccentric shaft of the second blanket cylinder to insert and remove the second blanket cylinder. a first link mechanism for detecting printing paper, a paper feed detection device for detecting the supply of printing paper, and a first link mechanism for controlling the movement of the first link mechanism based on a signal from the paper feed detection device a first link mechanism actuating section that activates and deactivates the first plate cylinder; a second link mechanism for carrying out blanking; and a second link mechanism for transmitting the movement of the blanking cam to the eccentric shaft of the second plate cylinder to carry out blanking of the second plate cylinder to the second blanket cylinder; A third link mechanism section is provided branching off from the first link mechanism section, and locks the second link mechanism section in conjunction with the movement of the first link mechanism section, thereby controlling the first plate cylinder. A fourth link mechanism section into which body insertion is performed, and a fourth link mechanism section that is provided branching off from the first link mechanism section, and locks the third link mechanism section in conjunction with the movement of the first link mechanism section. A double-sided printing machine characterized by comprising: a fifth link mechanism section in which a second plate cylinder is inserted.