JPH0742722Y2 - Conveying paper guide device for sheet-fed printing press - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a sheet-fed printing press, in which the paper is conveyed from the impression cylinder's claws to the discharge chain's claws while being attached to the peripheral surface of the discharge cylinder. The present invention relates to a transport paper guide device for guiding the paper tail portion of the paper.

[Conventional technology]

FIG. 4 is a schematic side view of a common impression cylinder type two-color printing sheet-fed printing machine as a type of sheet-fed printing machine. This will be described with reference to FIG. Unit 2, 3
And a paper discharging device 4, and the paper feeding device 1 has a paper 5
A paper stacking table 6 for stacking sheets and automatically rising, and a sucker device (not shown) are provided. Between the printing units 2 and 3, a double-diameter pressure cylinder 7 common to them is disposed, and a paper feed cylinder 8 is in contact with the peripheral surface thereof, and the paper feed device 1 and the paper feed cylinder are connected to each other. 8
A feeder board 9 and a difference plate 10 are continuously supported between and. Each of the printing units 2 and 3 is provided with a plate cylinder 11 on which a plate is mounted, and a blanket cylinder 12 that contacts the plate cylinder 11 and the impression cylinder 7. An ink device and a water supply device (not shown) for supplying ink and dampening water to the plate surface to form an image are provided.

The paper discharge device 4 includes a paper discharge cylinder 13 located below the impression cylinder 7 and in contact therewith, and a sprocket 14 coaxial therewith.
A pair of left and right paper discharge chains 16 having claws are stretched between the sprocket 15 and the sprocket 15 at the end of the paper discharge device 4. Below the paper discharge chain 16, a paper stack for stacking the paper 5 is provided. A stand 17 is provided.

With the above configuration, the sheets of paper 5 stacked on the sheet stacking base 6 are sucked one by one by the suction port of the sucker and fed to the feeder board 9, and further, the slippery sheet is fed by a paper feed tape or the like. It is sent to the top of 10 and the registration is aligned.
The paper 5 is gripped by the claws of the paper feed cylinder 8 and conveyed, and further gripped by the claws of the impression cylinder 7 and conveyed. At this time, since the images formed on both plate cylinders 11 are transferred to the blanket surface of the blanket cylinder 12, the image of the blanket cylinder 12 is printed on the paper 5 passing between the blanket cylinder 12 and the impression cylinder 7. Is transferred 2
Color printing is applied. The paper 5 after printing is replaced by the nail of the impression cylinder 7 with the nail of the paper ejection chain 16, and the paper ejection chain 16
After being conveyed by traveling, the paper is released from the grips of the nails at the end of the conveyance, and is dropped and stacked on the paper stacking table 17.

In such a printing operation, parts other than the gripping end of the paper 5 gripped by the claws of the impression cylinder 7 to the claws of the paper ejection chain 16 are sandwiched between the impression cylinder 7 and the paper ejection cylinder 13 at the beginning of gripping. However, when the conveyance progresses and the two cylinders 7 and 13 are released from the nip, it becomes a non-holding state and hangs down, and the printing surface becomes dirty or scratched.
An arcuate paper guide 18 and a linear paper guide 19 for guiding a portion other than the gripping end of the paper are provided along the conveyance path.

[Problems to be solved by the device]

In such a printing machine, if the surface of the discharge cylinder 13 is dirty or damaged, the printing surface of the paper 5 attached to the peripheral surface of the printing cylinder 13 becomes dirty or damaged. First, it is necessary to clean the surface of the discharge cylinder 13 or replace the special paper for preventing paper stains wrapped around the surface. In this case, the paper guide 18 gets in the way, but in the past,
Since the paper guide 18 was attached and detached by slackening or tightening the bolts inside the narrow machine and loosening and tightening the bolts, long time work in a cramped position requires a lot of labor, and the machine is idle for a long time. There was a problem that productivity was reduced due to extension.

[Means for Solving the Problems]

In the present invention for solving such a problem, a pair of levers pivotally supported on the frame side and a free end portion of the levers supported by a plate via a plate are ejected together with the swinging of the levers. An arc-shaped paper guide that is movable between an operating position that follows the peripheral surface of the cylinder and a storage position that retracts downward from the peripheral surface of the discharge cylinder and the free end portion of the lever are engaged, and this lever is A click mechanism that regulates rotation at the position where the paper guide operates,
The plate is swingably supported in the vertical and horizontal directions via a supporting member so that the tip portion can be engaged with and disengaged from the inverted L-shaped hole of the plate, and the tip portion is engaged with the inverted L-shaped hole to swing. With this, the rotation restriction of the lever by the click mechanism is released, and the paper guide moving operation rod that can be operated outside the machine that rotates the lever by removing the tip end from the inverted L-shaped hole and pushing and pulling is provided.

[Action]

During the printing operation, the paper guide is in the working position and its rotation is restricted by the click mechanism, and the paper is guided and conveyed by the paper guide. When servicing the output cylinder, swing the operating rod laterally from outside the machine to make it correspond to the vertical part of the inverted L-shaped hole on the plate side, and then push it forward while pushing down the operating lever. The lever integrated with the plate is reverse L
Due to the action of the character-shaped hole, the click mechanism is rotated against the restriction of rotation, and the paper guide integrated with the lever is moved and stored so as to be withdrawn from the peripheral surface of the discharge cylinder. After maintenance work on the output cylinder, pulling the operation rod forward and pushing it up to swing it laterally causes the lever to rotate due to the action of the inverted L-shaped hole and the paper guide integrated with the lever to act. It moves to the position and its rotation is restricted by the click mechanism.

〔Example〕

1 to 3 show an embodiment of a conveying paper guide device according to the present invention, FIG. 1 is a side view thereof, FIG. 2 is a partially cutaway front view of the same, and FIG. It is a III-III sectional view. Since the configuration of the entire printing press is the same as that of the conventional printing press described with reference to FIG. 4, description will be made later with reference to FIG. In the figure, the lever 21 is attached to the left and right frames 20.
Is rotatably pivoted by a pin 22 in the vicinity of the lower end of the shaft end of the paper discharge cylinder 13 that is in contact with the impression cylinder 7, and extends forward along the frame 20. The free ends of the left and right levers 21 are connected by a stay 23 formed in an L-shaped cross section, and a substantially square plate plate 24 orthogonal to the stay 23 is fixed to the center of the stay 23 with bolts 25. Has been this plate 24
A paper guide 26, which has a circular cross section formed by a plate material and is concentric with the peripheral surface of the paper discharge cylinder 13, is fixed by a bolt 27 to the upper end of the. The lower end of the paper guide 26 is
It is supported by a support fitting 28 bolted to 23.

Further, a pair of Ls projecting orthogonally to the plate 24
A rod receiver 30 is rotatably supported on the protruding end of the character-shaped bracket 29, and an operating rod 31 extending to the vicinity of the end of the frame 20 on the side of the sheet feeding device 1 is pin 32 on the rod receiver 30. Is rotatably pivoted horizontally. The other end of the operating rod 31 is engaged with an inverted L-shaped hole 33 formed in the plate 24. By rotating the operating rod 31 up, down, left and right, the tip end thereof is in the hole 33. Is configured to move along. The tip of the operating rod 31 is moved out of the hole 33 by moving the tip of the operating rod 31 to the lower end of the vertical portion of the hole 33 shown by reference numeral 33a in the figure. Then, by gripping the operation end of the operation rod 31 and pushing it down from the illustrated state, the paper guide 26 is rotated together with the lever 21 from the illustrated operating position along the peripheral surface of the paper discharge cylinder 13 via the plate 24. Move away from the waist circumference,
It is configured to occupy the storage position. The details of the operation will be described in the section of the operation description below.

Further, in the vicinity of the free end portion of the lever 21, a click mechanism 34 for restricting the rotation of the lever 21 with the paper guide 26 in the operating position is provided. That is, below the free end portion of the lever 21, a stop lever 35 having an inclined surface 35a at the upper end is pivotally attached to the frame 20 by a bolt 36, and the inclined surface 35a projects to the lever 21. The provided protrusions 21a are in contact with each other. Also, the studs 37 planted in the frame 21
A spring shaft 38 is slidably inserted in the spring shaft, one end of which is pivotally attached to the upper end of the stop lever 35.
An adjustable double nut 39 is screwed into the threaded portion of the other end of 38. A compression coil spring is provided on the spring shaft 38.
40 is interposed between the flange portion of the spring shaft 38 and the stud 37, and imparts a turning force to the stop lever 35 in a direction of pressing the inclined surface 35a against the protrusion 21a. When the lever 21 is rotated clockwise in FIG. 1 against the elastic force of the compression coil spring 40, the projection 21a slides on the inclined surface 35a and the stop lever 35 is moved to the timepiece shown in FIG. The projection 21
a descends along the vertical surface of the stop lever 35. 41 is adjustably fixed to the frame 20 with a bolt 42 inserted in the eccentric hole, and regulates the rotation limit of the lever 21 to control the paper guide 26.
It is a stopper that occupies a regular working position. Note that FIG. 1 shows the extended state of the operating rod 31.

The operation of the transport paper guide device configured as described above will be described. Since the operation of the entire printing machine has been described above, its explanation is omitted. During the printing operation, the operation rod 31 maintains a horizontal posture as shown in FIG. 1, and its tip is engaged with the horizontal portion of the hole 33. Further, the protrusion 21a of the lever 21 is in pressure contact with the inclined surface 35a of the stop lever 35 which is given rotational force by the compression coil spring 40, and the lever 21 is sandwiched between the stopper 41 and the inclined surface 35a. Rotation is restricted. As a result, since the paper guide 26 is at the normal operating position, the paper guide 26 is guided by the paper guide 26 without hanging down at a portion other than the gripping end of the paper 5 that is conveyed while being gripped by the claws of the paper discharge chain 16.

When performing maintenance work such as exchanging the special paper on the discharge cylinder 13, the operation end of the operation rod 31 is held outside the frame 20 and moved horizontally to move the third end. After the state shown by the chain line 31A in the figure, when the gripping end of the operating rod 31 is pushed down, the operating rod 31 moves to the paper guide 26 via the plate 24 while pressing its tip against the upper end surface of the hole 33 by the lever action. The lever 21 and the pin 32 are rotated about the pin 32. At this time, in the initial stage of rotation of the lever 21, the protrusion 21a
Slides on the inclined surface 35a to rotate the stop lever 35 in the clockwise direction in FIG. 1 against the elastic force of the compression coil spring 40, and after the projection 21a comes off the inclined surface 35a, 21a descends along the vertical surface of the stop lever 35. Operating rod
If the operating end touches the floor surface and you cannot rotate it while pushing down 31, push the operating end up slightly and the tip will reach the lower end 33a of the vertical part of the hole and will come out of the hole 33. After that, when the operation rod 31 is pushed in the horizontal direction, the lever 21 and the paper guide 26 rotate. The protrusion 21a is separated from the stop lever 35. Since the paper guide 26 rotated in this manner retreats to the position shown by the chain line 26A in FIG. 1 and occupies the storage position, the maintenance work of the discharge cylinder 13 becomes possible.

After completing the maintenance work, pull the operating rod 31 horizontally and push down the operating end slightly,
Since it engages with 33 and reaches its horizontal portion, the operating rod 31 is rotated in the horizontal direction to the state indicated by reference numeral 31B in FIG. Then, when the operating end of the operating rod 31 is grasped and pushed up, the operating rod 31 causes the distal end of the operating rod 31 to move into the hole 33.
The paper guide 26 and the lever 21 are rotated about the pin 32 in the counterclockwise direction in FIG. When the rotation progresses and the projection 21a comes into contact with the stop lever 35, it is rotated against the elastic force of the compression coil spring 40, and finally the projection 21a slides on the inclined surface 35a. The inclined surface 35a is pressed by the elastic force of the compression coil spring 40. Therefore, the paper guide 26 is fixed and fixed in rotation at the illustrated operating position, and returns to the printing operation state. In this state, the lever 21 is sandwiched between the stopper 41 and the inclined surface 35a.

[Effect of device]

As is apparent from the above description, according to the present invention, in the conveying paper guide device of the sheet-fed printing press, the pair of levers pivotally supported on the frame side and the plate at the free end portion of the levers are interposed. Supported by the swinging lever, the arc-shaped paper guide is movable between an operating position that follows the peripheral surface of the discharge cylinder and a storage position that retracts downward from the peripheral surface of the discharge cylinder.
A click mechanism that engages with the free end portion of the lever and restricts the rotation of the lever at the position where the paper guide operates, and a tip portion that is swingably supported by the plate vertically and horizontally through a support member. It can be freely engaged and disengaged in the reverse L-shaped hole of
By engaging and swinging the tip of the L-shaped hole to release the rotation regulation of the lever by the click mechanism, the tip is removed from the inverted L-shaped hole and pushed and pulled to rotate the lever outside the machine. By providing an operable operation rod for moving the paper guide, it is possible to operate the operation member from outside the machine to withdraw the paper guide from the peripheral surface of the paper ejection cylinder and return to the operating position during maintenance work of the paper ejection cylinder. The free end of the lever, which has been disengaged from the click mechanism by the paper guide moving operation rod, becomes free, and the lever is rotated by pressing the paper guide moving operating rod. Since the free end is largely separated from the discharge cylinder, the paper guide is pivoted and retracted to a storage position that is completely away from the working position. But Becomes easy, with effort is greatly reduced, saves time, and the productivity is improved.

[Brief description of drawings]

1 to 3 show an embodiment of a conveying paper guide device according to the present invention, FIG. 1 is a side view thereof, FIG. 2 is a partially cutaway front view of the same, and FIG. FIG. 4 is a schematic side view of a common impression cylinder type two-color printing press which is commonly used for the description of the conventional technique and the present invention. 13 …… Paper ejection cylinder, 21 …… Lever, 22 …… Pin, 24 …… Plate, 26,26A …… Paper guide, 31 …… Operating rod, 32 ……
Pin, 33 ... Hole, 34 ... Click mechanism, 35 ... Stop lever, 40 ... Compression coil spring.

Claims (1)

[Scope of utility model registration request] 1. A pair of levers swingably supported on a frame side, and an operating position supported by a free end portion of the levers via a plate and along with the swing of the levers along a peripheral surface of a sheet discharge cylinder. And an arcuate paper guide that is movable between the retracted position and the retracted position from the peripheral surface of the discharge cylinder, and the free end of the lever, and the lever is rotated at the position where the paper guide operates. The regulating click mechanism and the plate are supported by the plate so as to be swingable in the vertical and horizontal directions so that the tip portion can be engaged with and disengaged from the inverted L-shaped hole of the plate, and the tip portion is engaged with the inverted L-shaped hole. And swing to release the rotation restriction of the lever by the click mechanism, and the tip end is removed from the inverted L-shaped hole and pushed and pulled to rotate the lever. A sheet characterized by having a rod and Transport paper guide apparatus for a printing press.