JPS6116132Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for switching the movement of a transfer roller of an ink/water supply device in a printing press manually or in conjunction with the movement of an impression cylinder.

A rotary printing press is equipped with printing units corresponding to the number of printing colors. FIG. 1 is a schematic diagram of a printing unit in a multicolor sheet-fed rotary printing press. To explain this based on the figure, the printing unit 1 consists of a plate cylinder 2 on which a printing plate is installed, and a plate cylinder 2 on which a printing plate is installed. 2, and an impression cylinder 4 that rotates in contact with the blanket cylinder 3, and a paper transfer cylinder 5 is provided between adjacent printing units. Further, an inking device 6 equipped with a large number of roller groups and a water supply device 7 are respectively disposed above and in front of the plate cylinder 2, and both of these devices are used for the plate mounted on the plate cylinder 2. Devices 6 and 7 supply ink and water to form an image, which is transferred to the surface of blanket cylinder 3. Then, the printing paper transferred from the paper feeding device or the printing unit in the front stage to the claws of the paper transfer cylinder 5 and wound around its circumferential surface is transferred to the impression cylinder 5.
The image on the blanket cylinder 3 is transferred and printed when it passes between the blanket cylinder 3 and the impression cylinder 4, and is transferred to the downstream paper by the paper transfer cylinder 5 on the downstream side. Passed to a printing unit or non-paper device.

The inking device 6 of the printing unit 1, which is roughly configured as described above, includes an ink pot 8 containing printing ink, a pot roller 9 that rotates while immersed in the ink therein, and a swing roller 10. A transfer roller 12 supported by the tip of a swing arm 11 is provided between the roller 9 and the swing roller 10. The transfer roller 12 reciprocates between the pot roller 9 and the swing roller 10 by the swing of the swing arm 11 caused by the rotation of a cam (not shown).
The ink on the pot roller 9 is transferred to the shaking roller 10 by alternately contacting the circumferential surfaces of both rollers 9 and 10, and the ink transferred to the shaking roller 10 passes through a large number of roller groups and is transferred to the printing plate. It is supplied to the plate on cylinder 2. Also, the water source of the water supply device 7 is also connected to the inking device 6.
Since the configuration is almost the same as that, the same reference numerals will be given and the explanation thereof will be omitted. Both these devices 6,
During printing, the transfer roller 12 of 7 reciprocates between the rollers 9 and 10 as described above, but if it moves when there is no printing paper between the blanket cylinder 3 and the impression cylinder 4, the impression cylinder 4 Ink and water are supplied to the impression cylinder 4.
To avoid this, shake the transfer roller 12 before starting printing or when printing is interrupted.
It is configured to stop in a state where it is in contact with the 0 side and cut off the supply of ink and water. Similarly, when it is desired to cut off the supply of ink and water for only one color, the movement of the transfer roller 12 of the corresponding printing unit 1 is stopped.

On the other hand, the rubber cylinder 3 is supported by an eccentric bearing,
By rotating this bearing when not printing,
It is configured to separate the circumferential surface from the circumferential surfaces of the plate cylinder 2 and the impression cylinder 4 by eccentric action, thereby switching from a so-called cylinder insertion state to a cylinder removal state. In this way, when not printing, ink and water must be in a non-supplied state and the blanket cylinder 3 must be in an unloaded state. Therefore, in order to simplify the operation, the motion/stop switching operation of the transfer roller 12 is changed to a rubber cylinder. It is desirable to link this to the insertion and removal of the trunk 3. However, if they were always linked, for example, when you wanted to cut off the supply of ink or water for just one color, the cylinder would become unloaded and the printing paper would not feed properly.
Switching operation of the transfer roller 12 and insertion of the blanket cylinder 3,
It must be possible to perform both the body removal operation and the body removal operation independently.

The present invention was developed in view of the above points, and is a simple method in which a rotatable regulating member and a manual switching means are provided near the free end of a swinging lever that swings with the reciprocation of the transfer roller. With this configuration, the reciprocating movement and stopping of the transfer roller is linked to the insertion and removal operation of the printing cylinder, and the reciprocation and stopping of the transfer roller can be freely controlled manually regardless of the insertion and removal of the printing cylinder. Transfer roller switching implemented in the ink and water supply device of a printing press, which enables quick and easy ink and water supply and stop operations corresponding to various printing and non-printing modes. It provides equipment.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

2 to 4 show the transfer roller switching mechanism according to the present invention, with FIG. 2 being a side view thereof, FIG. 3 being a cross-sectional view showing the same developed, and FIG. 4 being an operation explanatory diagram. This embodiment shows an example in which the present invention is applied to a multi-color sheet-fed rotary printing press, and since the overall configuration of the printing unit in which this is implemented has been explained with reference to FIG. 1, a detailed explanation thereof will be omitted. The same diagram will be used later when necessary. In these figures, there is a fountain roller 9 that is immersed in ink stored in an ink fountain 8 at the upper end of the printing unit 1 and rotates at a low speed, and a swing roller 9 that is rotatably supported by a frame 21 and rotates at a high speed at the same circumferential speed as the plate cylinder 2. A calling shaft 22 is rotatably supported by a frame 21 between the roller 10 and the calling shaft 22 . A transfer roller 12 is rotatably supported on the swing arm 11 which is pivotally attached to the calling shaft 22, and the frame 2 of the calling shaft 22 is
A cam lever 23 and a swing lever 43, which will be described later, are pivotally attached to the protruding portion from 1. Furthermore, a cam shaft 24 is installed in the frame 21 diagonally below the calling shaft 22, and a cylindrical cam stand 25 rotatably mounted on the cam shaft 21 has a plate cylinder 2 on both end surfaces. A sprocket 26 and a cam 27, which rotate in synchronization with the cam 27, are each integrally mounted.
Among these, the cam 27 has a large diameter portion 27a and a small diameter portion 27.
The cam follower 28 at the tip of the cam lever 23 is in contact with this cam surface. The cam lever 23 is biased with a rotational force in the direction of pressing the cam follower 28 against the cam surface by a compression coil spring 29 mounted with one end supported by the frame 21 side.

On the other hand, the calling shaft 22 for the swinging roller 10
On the opposite side, the shaft 30 connects the frame 21 and the panel 3.
1, and a disc 32 is pivotally attached to the shaft 30 near the frame 21. Two pins 33 and 34, long and short, are planted near the front outer periphery of the disk 32 at an interval of about 70 degrees in circumferential angle. Further, on the outer circumferential surface of the disc 32, three notches 35, 36, 37 are provided at intervals of approximately 70 degrees in circumferential angle, while on the frame 21, these notches 35, 36, 37 are provided. A click spring 38 is provided which selectively engages. Therefore, the disk 32 is rotated to make the depth of cut 3.
By engaging any one of the springs 5, 36, and 37 with the click spring 38, the disc 32 is prevented from floating. Furthermore, on the shaft 30, a piece 42 as a regulating member is integrally formed with a cylinder 39, an arm 40 welded to both ends of the cylinder 39, and a piece plate 41. The piece 42 is rotatable with the piece plate 41 adjacent to the boss of the disk 32. is fitted in. The piece plate 41 of this piece 42 is formed in a rectangular shape and includes a protrusion 41a that can be engaged with the longer pin 33, and a notch 41b on the opposite side. On the other hand, a swinging lever 43 that swings together with the swinging arm 11 is pivotally attached to the calling shaft 22 with its swinging end facing between the disc 32 and the piece plate 41. A pin 44 that can engage with the notch 41b of the piece plate 41 is implanted in the portion.
Further, the shorter pin 34 is connected to the swing lever 4
It is formed to a length that restricts the swinging when it corresponds to No. 3. A handle 45 for manually operating the shaft 30 is rotatably attached to the distal end of the shaft 30 with a seat plate 46 made of an elastic material interposed between the handle 45 and the panel 31 .

On the other hand, between the plate cylinder 2 and the impression cylinder 4, a frame 21 is located between the plate cylinder 2 and the impression cylinder 4, whose axis is centered at the point indicated by the symbol F in FIG.
An eccentric bearing 47 is provided which is pivotally supported at a point F.
A rubber cylinder 3 having axes F ₁ , F ₂ , . . . is rotatably supported. During printing, the blanket cylinder 3 is placed in contact with the plate cylinder 2 as shown by the solid line in FIG. 2, and when not printing, the eccentric bearing 47 is rotated to control the blanket cylinder 3. The axis of the blanket cylinder 3 is moved from point F ₁ to F ₂ , and cylinder removal is performed to separate the circumferential surface of the blanket cylinder 3 from the plate cylinder 2 as shown by the chain line. The flange of the eccentric bearing 47 thus constructed and the lever 40 of the piece 42 are connected by a connecting rod 48. That is,
One end of the connecting rod 48 is rotatably connected to the flange of the eccentric bearing 47 by a pivot shaft 49.
The other end is swingably fitted into a square pin 49 rotatably provided at the tip of the lever 40. Then, the square pin 49 and the connecting rod 48
There is a square pin 4 between the upper collars 50 and 51.
Compression springs 52 and 53 are interposed to elastically repel 9 from both sides.

Next, the operation of the transfer roller switching mechanism configured as described above will be explained. First, during printing, the rubber cylinder 3
The axial center is point _F1 , the peripheral surface is in contact with the plate cylinder 2 and the impression cylinder 4, and printing pressure is applied to the printing paper passing between the blanket cylinder 3 and the impression cylinder 4. . Due to this position of the rubber cylinder 3, the connecting rod 48 is
Since the connecting rod 48 rotates the lever 40 clockwise in FIG. 2 via the springs 52 and 53, the bridge plate 41 integrated with the lever 40 is in the position shown by the solid line in FIG. It is located at an inclined position as shown in the figure. Therefore, as the cam 27 rotates, the cam lever 23, the swing arm 11, and the swing lever 43 freely swing together, and the transfer roller 12 reciprocates between the pot roller 8 and the swing roller 10. The ink on the pot roller 8 is transferred to the shaking roller 10. That is, since the bridge plate 41 is inclined and the notch 41b corresponds to the pin 44 of the swing arm 43, it is possible to prevent the swing lever 43 from swinging as shown by the solid line and chain line in FIG. 4a. The transfer roller 12 continues to reciprocate without any problem.

Next, when the eccentric bearing 47 of the blanket cylinder 3 is rotated clockwise in FIG. 2 during non-printing, the axis of the blanket cylinder 3 moves from the position indicated by _F1 to the position indicated by _F2 . Then, the circumferential surface of the blanket cylinder 3 is separated from the plate cylinder 2 to perform cylinder removal, and the pivot 49 at one end of the connecting rod 48 moves to the chain line position. Therefore, as shown in FIG. 4b, the connecting rod 48 rotates the lever 40 counterclockwise and the piece plate 41 stands up, so that the non-notched portion of the piece plate 41 engages with the swinging lever 4.
The swinging lever 43 faces the pin 44 of No. 3, and its swinging is restricted. That is, the transfer roller 12 stops in a state where it is in contact with the swing roller 10, and the supply of ink is cut off. In addition, in this case, the transfer roller 12
If you remove the body while the bottle is on the pot roller 8 side,
When the pin 44 is engaged with the notch 41b, the bridge plate 41 tries to rotate, but the springs 52, 53,
By providing this, only the connecting rod 48 is moved first, and the piece 42, that is, the piece plate 41 is moved by the transfer roller 1.
2 stands up after coming into contact with the swinging roller 10 and stops the swinging of the swinging lever 43.

Next, a case will be described in which the transfer roller 12 is independently reciprocated or stopped regardless of whether the blanket cylinder 3 is inserted or removed. First, when the handle 45 is grasped and the disk 32 is rotated in the direction of the arrow A in FIG. is notch 3 of disk 32
5 to restrict rotation of the disc 32. Therefore, the swing lever 43 is swingable as in FIG. 4a, and the transfer roller 12 reciprocates as the cam 27 rotates. In this case, spring 5
2 and 53, even if the connecting rod 48 slides while the rotation of the piece 41 is restricted, the springs 52 and 53 expand and contract to absorb the movement. There is no way to prevent the body insertion/removal action described in step 3. Moreover, when the handle 45 is grasped and the disk 32 is rotated in the direction of arrow B in FIG. 4d,
The shorter pin 34 passes between the piece plate 41 and the disk 32 and faces the upper surface of the tip of the swing lever 43,
The click spring 38 engages with the notch 37 of the disc 32 to restrict rotation of the disc 32. Therefore, the swinging lever 43 is restricted from swinging by the pin 34, and the transfer roller 12 stops in contact with the swinging roller 10. In this case, even if the disk 32 is rotated when the transfer roller 12 is on the pot roller 8 side, the pin 3
4 presses down the upper surface of the swing lever 43, so that the transfer roller 12 is forcibly moved toward the swing roller 10 side. Further, even if the blanket cylinder 3 is inserted or removed in this state, the operation will not be hindered since the piece 41 can be rotated as shown by the solid line and chain line in FIG. 4d.

The transfer roller switching mechanism in the inking device 6 has been described above, but a transfer roller switching mechanism with the same configuration is also provided between the transfer roller 12 of the water supply device 7 and the blanket cylinder 3. It is configured to move in synchronization with the roller switching mechanism. Its structure and operation are the same as those of the inking device 6, so a description thereof will be omitted.

As is clear from the above explanation, according to the present invention, in the ink/water supply device of a printing press, a rotatable regulating member is provided near the free end of the swinging lever that swings with the reciprocation of the transfer roller. By providing a manual switching means and connecting the regulating member and an eccentric bearing that supports the printing cylinder with a connecting rod with a spring interposed, the reciprocating movement and stopping of the transfer roller can be controlled by the cylinder loading of the printing cylinder. It can be linked to the cylinder unloading operation, and the reciprocating movement and stopping of the transfer roller can be selected and switched extremely easily manually from the outside regardless of the cylinder loading/unloading state of the printing cylinder. Therefore, when starting printing or when cutting off the ink or water supply for one color during multicolor printing, etc.
Ink and water supply and stop bonding can be performed extremely quickly and easily for various printing and non-printing situations, improving work efficiency and preventing paper waste. Furthermore, since the structure is simple, the number of parts is small, and the area occupied is small, maintenance is easy and can be provided at low cost, making it highly adaptable to small machines.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a printing unit in a multicolor sheet-fed rotary printing press, Figs. 2 to 4 show a transfer roller switching mechanism in an ink/water supply device of a printing press according to the present invention, and Fig. Side view, 3rd
The figure is a cross-sectional view showing the same expanded state, and FIG. 4 is an explanatory diagram of the operation. 3... Rubber cylinder, 9... Pot roller, 10... Swinging roller, 11... Swinging arm, 12... Transfer roller, 30... Disc shaft, 32... Disc, 41... Regulating member, 42... ... Piece, 43 ... Swing lever, 45
...Handle, 48...Connection rod, 52, 53
...Spring.

Claims (1)

[Scope of utility model registration request] A swinging lever 43 that swings integrally with the swinging arm 11 of the transfer roller 12 that reciprocates between the pot roller 9 and the swinging roller 10;
A regulating member 41 is rotatably supported on a frame near the free end of the pivoting lever 43 and is switched between a position where the swinging lever 43 is restricted and a non-regulating position where the swinging lever 43 is allowed to swing; The lever 41 is rotated into three positions: a holding position in which the regulating member 41 is held in position to restrict switching of the position, a non-holding position in which the regulating member 41 is allowed to switch its position, and a regulating position in which the regulating member 43 itself regulates the swinging of the swinging lever 43. a manual switching device 30 for switching by motion;
32, 45, springs 52, 53 on the regulating member 41;
A transfer roller switching device in a printing press, comprising a connecting rod 48 which is connected via a connecting rod 48 and transmits the removing and inserting operation of the printing cylinder 3 to change the position of the regulating member 41.