JPS6228617Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for correctly regulating the position of signatures folded by a folder in a rotary printing press and directed toward a paper discharge device.

The web rotary printing press is equipped with a folding machine that cuts and folds the printed web into predetermined dimensions. Figure 1 is a schematic side view of this type of folding machine, in which a printed web 1 is cut origami into so-called signatures by a cutting cylinder 2, a folding cylinder 3, and a gripping cylinder 4, which are lined up in the width direction. It is conveyed by being sandwiched between a plurality of upper and lower conveyor belts 5 and 6. Then, at the end of the conveyance, the sheet falls between the blades of the rotating impeller 7, and as a result of the rotation, the sheet is discharged onto the sheet discharge belt 8, and then conveyed and discharged out of the machine. Further, a chopper 9 is provided in the conveyance path of the conveyor belts 5 and 6, and for example, an 8-page signature 10B is required, which is obtained by further folding a 4-page signature 10A in half at right angles. In this case, this chopper 9 is used. In other words, the signatures conveyed by the conveyor belts 5 and 6 are
The tipper 9 stops when it comes into contact with the front end of the signature position regulating device 11 provided above the terminal end, and the stopped signature is moved below the belt 6 by a thin plate-shaped chopper blade that descends from above. It is pushed between a pair of rollers provided parallel to the conveyance direction. By doing this, the signatures folded in the right angle direction are similarly discharged to the outside of the machine by the paper discharge belt 8.

FIGS. 2 and 3 are a cross-sectional view and an AA cross-sectional view of the conventional signature position regulating device 11, in which a signature 10 is conveyed above the conveyor belts 5 and 6 as indicated by an arrow B. A plurality of brackets 14 are pivotally attached to the front shaft 13 which is pivoted on the frames on both sides perpendicular to the direction.
4 is attached with a front stop 15 having an inverted L-shaped cross section. The front shaft 13 is connected to the pin 1
6 is pulled against the elastic force of the compression coil spring 17. By selecting and inserting the pin hole 18 into one of the two pin holes 18 provided in the frame 12, the rotation can be made in two places. It is configured to be locked. That is, in the case of choppy folding using the front stopper 15, the rotation is stopped at the position shown in Fig. 3, and when the front stopper 15 is not in use, it is moved in the direction shown by arrow C in Fig. 3. It is rotated and locked at a position away from the conveyor belts 5 and 6.

Note that the front stop 15 is provided with a plurality of corresponding notches in order to avoid the conveyance belts 5 and 6, and the front stop 15 is lowered until it comes into contact with the conveyance table 19.

However, in the conventional signature position regulating device 11 configured as described above, the front abutment 15 is not aligned with the front abutment shaft 1.
Since the web 1 is supported by a bracket 14 fixed to the web 3 and is always fixed in a position perpendicular to the conveying direction of the signature 10, the web 1 is folded in half in the width direction and then cut and origami is performed. Problems occur when the signature is folded in a certain way. In other words, in the case of format folding, a fold is formed on one side of the signature 10 in the width direction, and the fold side is stronger than the side without the crease, so this is transported and placed on the front cover 15. When they come into contact, the folded side, which has a strong stiffness, cannot be bent and suddenly stops, but the non-folded side, which has a weak stiffness, bends slightly and tries to stop ahead of the folded side. However, when driving at high speed,
When 0 hits the front guard 15, it is immediately folded by the chopper 9 before it stabilizes in the correct position along the line of the front guard 15, so the fold of the chipper fold is not at right angles and folding accuracy cannot be ensured. There was a problem.

The present invention was developed in view of the above points, and has one end in the width direction pivoted to a fixed bracket fixed to a support shaft, and the other end pivoted around the pivoted part as a swinging fulcrum. By making it possible to adjust the movement in the transport direction, it is possible to adjust the twist of the front cover to accommodate signatures of various specifications such as format folding, and to maintain a stable state with no play in the front cover after twist adjustment. The present invention provides a signature position regulating device for a rotary printing press that is designed to improve folding accuracy.

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

4 to 7 show the signature position regulating device according to the present invention, FIG. 4 is a partially cutaway plan view thereof, FIG. 5 is a DD sectional view of FIG. 4, and FIG. 6 is a sectional view of FIG. 4. EE of
The sectional view, FIG. 7, is a side view from F in FIG. 4. The overall structure of the folding machine and the mounting location of the signature position regulating device are the same as those of the conventional folding machine explained in FIG. In these figures, front support shafts 23 perpendicular to the direction of conveyance of signatures 22 are provided on both side frames 21 of the folding machine, and collars 24
and a fixed lever 25 and a spring receiver lever 2, which will be described later, which are provided adjacent to each other on the outside of the frame 21.
6, the shaft is rotatably supported with its movement in the axial direction restricted. A fixed bracket 27 is attached to the frame 21 at one end of the front support shaft 23.
The front support shaft 23
At the other end of the frame 21, a movable bracket 28 is formed near the frame 21 so as to be slidable but non-rotatable with a sliding key 29, and is fitted onto the front support shaft 23. The long front stopper 30, which has an inverted L-shaped cross section, has one end pivotally connected to the fixed bracket 27 by a pivot 31, and has an inclined long hole 32 provided at the other end and a movable front stopper 30. The other end is supported by the movable bracket 28 by engagement with a pin 33 screwed into the bracket 28.

On the other hand, the handle shaft 3 is attached to the frame 21 on one side.
4 is rotatably supported at the rear of the front support shaft 23 and close to it, with its movement in the axial direction being restricted by a pair of collars 35, and a handle 36 is attached to one end of the shaft.
is attached to the shaft. A shifter 37 that engages with the stepped portion of the movable bracket 28 is screwed onto the threaded portion of the other end of the handle shaft 34, and by rotating the handle shaft 34, the movable bracket 28 slides. , is configured to swing around a pivot 31 at the other end of the front stop 30 by the action of the oblique elongated hole 32 and the pin 33, so that the perpendicularity to the conveying direction of the signature 22 is adjusted. There is. Furthermore, the front support shaft 23
A spring bearing 38 formed in an inverted L shape is fixed with a bolt 39, and a spring shaft 41 whose one end is pivotally connected to the front stop 30 with a pin 40 is fixed to the spring bearing 38 with a bolt 39.
is inserted. A front stop 30 is provided between the collar 42 at the tip of the spring shaft 41 and the spring receiver 38.
A compression coil spring 43 is interposed which biases its free end side in a direction away from the conveyed signature 22,
Due to this bias, the inner wall of the elongated hole 32 on the side of the front support shaft 23 is pressed against the pin 33, so that the front support 30 is stably supported.

Furthermore, between the free end side of the fixed lever 25 that is loosely fitted to the other end of the front support shaft 21 and the free end side of the spring receiver lever 26 that is fixed to the front support shaft adjacent thereto, A compression coil spring 44 that applies a rotational force to both levers 25 and 26 in a direction that moves their free ends away from each other is interposed on a spring shaft 46 that is prevented from coming off by a collar 45. A stepped fixing pin 48 having a handle 47 is inserted into the free end of the fixing lever 25, and the fixing pin 48 is inserted between the stepped portion and the inner surface of the shaft hole of the fixing lever 25.
A compression coil spring 49 is interposed to bias the frame 21 side. The frame 21 is provided with two pin holes 50 into which the fixing pin 48 can be inserted.
8 and fixed to the frame 21, the lower end of the front support 30 is conveyed as shown in FIGS. 5 and 6 via the compression coil spring 44, the spring receiver lever 26, and the front support shaft 23. table 51
It is configured to be positioned so as to be in contact with the. In addition, by selecting the other pin hole 50 and fitting the fixing pin 48 to fix it to the frame 21, the front support shaft 23 can be rotated counterclockwise in FIGS. 5 to 7. 30 is positioned such that its lower end is spaced apart from the transport table 51.

The operation of the signature position regulating device configured as above will be explained. As mentioned above, when cutting origami the web 1 without using the chopper 9,
When the fixing pin 48 is inserted into one of the pin holes 50 and the front plate 30 is separated from the conveyance table 51, the signature 22 passes above the chopper 9, and the signature 10A is discharged.

When using the chopper 9, grasp the knob 47, pull the fixing pin 48 against the elastic force of the compression coil spring 49, and rotate the fixing lever 25 in this state. When the fixing pin 48 is inserted into the other pin hole 50, the lower end of the front stop 30 is inserted into the transport table 51 as shown in FIGS.
comes into contact with. In this case, the position of the pin hole 50 can be set by further rotating the fixing lever 25 after the front stopper 30 contacts the conveyance table 51 so that the fixing pin 48 and the pin hole 50 face each other. For example, at the position where the fixed lever 25 is fixed, the compression coil spring 44 is compressed and elastic force is accumulated.
Therefore, the lower end of the front support 30 is pressed against the conveyance table 51 due to the accumulated elastic force, so that play between the fixing pin 48 and the pin hole 50 and twisting of the front support shaft 23 may occur. However, this is absorbed and no gap is created between the front plate 30 and the conveyance table 51.

Furthermore, when the origami specification of the signature 22 changes, so-called twist adjustment is performed in which the front plate 30 is swung around its pivot point to adjust the perpendicularity to the conveying direction of the signature 22. It is done. That is, in the case of a folding method called form folding, in which the web 1 is folded in half in the width direction and then cut and origami is performed, the signature 22 sent above the chopper 9 has a width A crease is formed on one side of the direction. Therefore, since the folded side is stronger than the non-folded side, the amount of bending of the paper when it comes into contact with the front stop 30 is different on both sides of the signature 22. Moreover, at high speeds, when the signature 22 hits the front stop 30, it is immediately folded by the chopper 9 before it stabilizes in the correct position along the line of the front stop 30', so that the fold of the chip fold does not form a right angle. Therefore, in anticipation of this, the initial perpendicularity must be adjusted to a different position than in the case of non-former folding. Therefore, when performing this adjustment, when the handle 36 is gripped and the handle shaft 34 is rotated, the shifter 37 moves forward and backward, and the movable bracket 28 that engages with the shifter 37 slides. Through the action of the pin 33, the front abutment 30 swings about the pivot 31, achieving this purpose. In this case, by providing the compression coil spring 43, the inner wall of the elongated hole 32 is pushed against the pin 33 by its elastic force.
Since it is pressed against the front stop 30, even if there is play in each part of the support part of the front stop 30, all of this is absorbed and the front stop 30
0 is fixed at the adjusted position without wobbling.

After making the adjustments as described above, when the machine is operated, the signature 22 folded at the origami section is held between the conveyor belts 5 and 6 and conveyed on the conveyor table 51. As soon as the front end of the signature 22 comes into contact with the front stop 30, the chopper 9 operates to fold the signature 22 in a direction perpendicular to the conveying direction, and the folded signature 2
2 is discharged to the outside of the machine by a paper discharge belt 8. and,
Even if the portion of the signature 22 that is in contact with the front stopper 30 that does not correspond to the conveyor belt 6 sags due to its own weight, causing the entire signature 22 to wave in the width direction, the front stopper 3
0 is pressed against the conveyance table 51, the signature 22 is not drawn into between the front cover 30 and the conveyance table 51. Further, even if the signature 22 contacts the front stop 30 with force, the front stop 30 does not wobble, and folding accuracy by the chopper 9 is always ensured.

As is clear from the above explanation, according to the present invention, in the signature position regulating device of a rotary printing press,
A fixed bracket is fixedly supported at one end of the support shaft, a movable bracket is slidably supported at the other end, and one end is pivotally connected to the fixed bracket and the other end is engaged with the oblique oblong hole and the pin. and a front stop supported by the movable bracket, which is swing-adjustable so that the swing end thereof is moved in the signature conveying direction about the pivot point to the fixed bracket by the sliding of the movable bracket. By providing a front support, a spring that is interposed between the front support and the support shaft side and urges the front support in the swinging direction, and an adjustment mechanism that slides the movable bracket, the front support can be easily folded. The perpendicularity of the paper to the conveyance direction can be adjusted.
In addition, after adjustment, it is possible to maintain a stable state with no play in advance, so the folding accuracy of chip folding can be always ensured for various signatures, including format folding, and the quality of the product is improved. is significantly improved. In addition, since it is possible to absorb the play in each part, it is possible to lower the machining accuracy and assembly accuracy of parts, reducing machining costs and labor, and reducing overload on each part. It can be reduced.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the folding machine to explain the overall configuration of the folding machine, Fig. 2 is a cross-sectional view of a conventional folding position regulating device, Fig. 3 is a sectional view along AA of Fig. 2, 4 to 7 show the signature position regulating device for a rotary printing press according to the present invention, FIG. 4 is a partially cutaway plan view thereof, FIG. 5 is a sectional view of DD of FIG. 4, and FIG.
The figure is a sectional view of EE in FIG. 4, and FIG. 7 is a side view of F in FIG. 22...signature, 23...front support shaft, 27...fixed bracket, 28...movable bracket, 30...
... Front guard, 32... Long hole, 33... Pin, 34...
Handle shaft, 37...shifter, 43...compression coil spring.

Claims (1)

[Scope of utility model registration request] A support shaft 23 is supported perpendicularly to the conveying direction of the signatures 22, a fixed bracket 27 is fixedly supported on one end of the support shaft 23, and a movable bracket 28 is slidably supported on the other end of the support shaft 23. One end is pivotally connected to the fixed bracket 27, and the other end is connected to the oblique oblong hole 32.
A front part supported by the movable bracket 28 by engagement with the movable bracket 2 and the pin 33.
a front stop 30 that is swing-adjustable so that its swing end moves in the conveying direction of the signature 22 around the pivot point to the fixed bracket 27 by sliding the front stop 30; a spring 43 interposed between the shaft 23 side and biasing the front support 30 in the singing direction; and adjustment mechanisms 34, 3 that slide the movable bracket 28.
7. A signature position regulating device for a rotary printing press, characterized by comprising: