JPH0331160A - Impeller device for printer sheet discharge section - Google Patents

Abstract

PURPOSE:To prevent the interference between impellers and the printing paper at the portion where the chopper-folded printing paper passes by providing a rotating direction phase adjusting mechanism in the middle of a rotation transmitting passage to the rotary shaft of a rotary shaft driving mechanism, and providing a shift mechanism for moving part of impellers in the axial direction of the rotary shaft. CONSTITUTION:When the printing paper discharged from the sheet discharge section of a printer is chopper-folded, at least part 48 of multiple impellers receiving the printing paper and conveying it to the preset position are moved in the axial direction of a rotary shaft 35 by the rotation of the cylinder 42 of a shift mechanism 40. The interference between impellers at the portion where the chopper-folded printing paper passes and the printing paper can be prevented. When the printing paper not chopper-folded is discharged, moved impellers are returned to the original position, and the printing paper is conveyed to the preset position via these impellers. The rotary shaft is rotated by a rotating direction phase adjusting mechanism by the preset angle to adjust the rotating direction phase of impellers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an impeller device that conveys printed paper discharged from a paper discharge section of a printing machine to a predetermined position.

[Background technology]

Generally, a roll of paper printed with a rotary printing press or the like is printed and dried, then cut at the center of the paper width and introduced into two formers, where it is folded along the conveyance direction and then cut into a predetermined length. After being cut, the paper is folded in a direction perpendicular to the transport direction and discharged to the impeller device. This impeller device has a large number of substantially spiral blades each protruding a predetermined length along a tangential direction at a predetermined interval from the circumferential surface of a substantially disc-shaped base body, and a plurality of substantially spiral blades are formed between these blades. The folded printing paper as described above is introduced into the printing paper storage section and is transported to a predetermined position, for example, onto a discharge conveyor or a paper discharge table.

In this type of impeller device, it is necessary to discharge the printed paper in accordance with the timing when the printed paper storage section between each blade of the rotating impeller rotates. For this reason, the timing at which each blade of the rotating impeller turns, that is,
A mechanism for adjusting the rotational phase is required. Conventional examples of such rotational phase adjustment mechanisms include differential gear mechanisms and planetary gear mechanisms.

Incidentally, the printed paper folded as described above may be further folded along the conveying direction on the upstream side of the impeller device, so-called chopper folding.

The printed paper that has been chopper-folded in this way is not discharged to the impeller device, but is directly transferred from the front of the impeller device onto a carry-out conveyor or paper output table, and is then discharged through the underside of the impeller device. . In this case, since the chopper-folded printing paper is thicker than the non-chopper-folded printing paper, there is a risk that the chopper-folded printing paper may interfere with each impeller when passing under the impeller device. Therefore, in the past, methods have been adopted in which the impeller is moved upward by an air cylinder along with its drive system, or the impeller is fixed and the paper discharge conveyor or paper discharge table is released downward.

[Problem to be solved by the invention]

However, since the phase adjustment mechanism in the conventional impeller device uses a differential gear mechanism or the like as described above, there is a problem that the mechanism becomes complicated and large.

Furthermore, the conventional mechanism for avoiding chopped printed paper is complicated and large, and furthermore, the mechanism for lifting the impeller along with the drive system must be used in combination with the large phase adjustment mechanism. There is also the problem that it is not possible.

The object of the present invention is to provide a phase adjustment mechanism for the rotational direction of an impeller;
To provide an impeller device for a paper discharge section of a printing press having a simple structure and capable of being combined with a mechanism for preventing interference with chopper-folded printing paper.

[Means to solve the problem]

The present invention provides a mechanism for making at least a part of a plurality of impellers mounted on a rotating shaft movable in the axial direction of the rotating shaft to prevent interference with chopper-folded printing paper, and for simplifying the structure. This enables the simultaneous installation of an interference prevention mechanism and a rotational direction phase adjustment mechanism.

Specifically, the present invention provides a rotating shaft that is rotatably supported by a frame, an impeller that is attached to the rotating shaft and can rotate integrally with the rotating shaft, and a rotating shaft drive mechanism that rotationally drives the rotating shaft. a rotational direction phase adjustment mechanism provided in the middle of a rotation transmission path to the rotational shaft of the rotational shaft drive mechanism and capable of adjusting the phase of the rotational direction; This is an impeller device for a printing press paper discharge section, characterized in that it is equipped with an impeller axial direction shift mechanism for moving the impeller in the direction of the impeller.

In the present invention, the impeller axial direction shift mechanism includes, for example, a cylindrical body that is fitted onto the rotating shaft so as to be slidable in the axial direction and is rotatable integrally with the rotating shaft when moving to a predetermined position, and the cylindrical body and at least a portion of the impeller provided in the.

Further, in the present invention, the rotational direction phase adjustment mechanism may include:
For example, a rotating shaft and a drive pulley of a rotating shaft drive mechanism connected to this rotating shaft are connected via a threaded portion, and
An operating section for moving the drive pulley forward and backward in the axial direction of the rotating shaft is provided.

[Effect]

In the present invention configured as described above, when the printed paper discharged from the paper discharge section of the printing machine is chopper-folded, at least one of the plurality of impellers that receives the printed paper and transports it to a predetermined position is used. A portion of the impeller is moved in the axial direction of the rotating shaft to prevent interference between the impeller and the printing paper in a portion through which the chopper-folded printing paper passes. On the other hand, when printing paper that has not been chopper-folded is discharged, the moved impellers are returned to their original positions, and the printing paper is transported to a predetermined position via these impellers.

The mechanism that prevents interference with the chopper-folded printing paper is a simple mechanism that simply moves at least part of the impeller in the axial direction of the rotating shaft, so the phase of the impeller's rotation can be adjusted. It can be installed in parallel with other mechanisms, and there will be no problems.

Further, the rotational direction phase of the impeller is adjusted by changing the relative position in the rotational direction when transmitting the rotation of the drive source side of the rotary shaft drive mechanism to the impeller side. On this occasion,
In the configuration in which the drive pulley and the rotating shaft are connected by a threaded portion as described above, by moving the driving pulley in the axial direction of the rotating shaft, the rotating shaft is rotated by a predetermined angle by the action of the threaded portion, and the phase is adjusted. Ru.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

An embodiment of the present invention is shown in FIGS. 1 and 2. FIG.

In FIG. 2, the printing press discharge section 10 includes a frame 11, on which the terminal ends of a lower conveyor belt 12 and an upper conveyor belt 13, each consisting of a plurality of narrow belts, are wound.

The lower conveyor belt 12 is wound around a drive roller 14 connected to a belt drive source (not shown), then wound endlessly while being guided by a plurality of guide rollers 15 and a guide roller (not shown), and is driven to rotate. is made possible. on the other hand,
The upper conveyor belt 13 has its terminal end hooked around a drive roller 17 supported by a belt position adjustment mechanism 16, and is wound endlessly while being guided by a guide roller (not shown) via a presser roller 18. , the lower conveyor belt 12
It is designed to be rotated at the same speed. In addition, the descending side of these lower conveyor belts 12 and the upper conveyor belt 13
are disposed close to and facing each other with the descending sides, and the folded printing paper can be conveyed between these descending sides.

The rotation of the drive roller 14 of the lower conveyor belt 12 is transmitted to the drive roller 17 on the upper conveyor belt 13 side via gears 19A and 19B.

An impeller device 30 according to the present invention is provided on the frame 11 of the printing press paper discharge section 10 via a bracket 31.

As shown in detail in FIG. 1, the entire impeller device 30 is rotatably supported at one end by the bracket 31 via a bearing 32, and at the other end by a bearing 3.
3 and a bearing box 34, the rotary shaft 35 is rotatably supported by the frame 11 through a bearing box 34, but not movable in the axial direction.

One fixed impeller 38 is attached to the rotating shaft 35 near the bracket 31 side via a key 36 and a mounting bush 37. The mounting bush 37 can be attached to and detached from the rotating shaft 35 by the action of a bolt 39 and a slot groove 37A formed along its radial direction.

Further, a cylindrical body 42 is fitted onto the rotating shaft 35 via a pair of left and right slide bearings 41 so as to be slidable in the axial direction. This cylindrical body 42 engages the inner end of a positioning pin 43 provided in the center of the cylindrical body 42 so as to be insertable and removable in the radial direction into one of two grooves 44 and 45 provided in the middle of the rotating shaft 35. By doing so, the axial position with respect to the rotating shaft 35 is set. A dog clutch 46 that can be engaged with each other is provided at the left end of the cylindrical body 42 and the right end of the mounting bush 37 in the figure, and the dog clutch 46 has a positioning pin 43 that is engaged with a groove 44 on the left side. The rotation of the mounting bush 370, which rotates integrally with the rotating shaft 35, is transmitted to the cylindrical body 42.

A plurality of movable impellers 48, five in this embodiment, are detachably attached to the outer periphery of the cylinder 42 at predetermined intervals. At this time, the cylinder 4 to which the movable impeller 48 is attached
2 has an outer diameter equal to the outer diameter of the mounting bush 37,
The fixed impeller 38 and the movable impeller 48 have exactly the same configuration and can be attached to the mounting bush 37 or the cylindrical body 42.

Since the structures of the fixed impeller 38 and the movable impeller 48 are the same as described above, the same reference numerals will be used to describe each component.

That is, the fixed impeller 38 and the movable impeller 48 each include a substantially disk-shaped base 51 and a large number of substantially circular impellers each extending a predetermined length along the tangential direction from the circumferential surface of the base 51 at a predetermined interval. It is composed of spiral blades 52. The base body 51 is fixed to the base body 51 and can be fixed to or removed from the mounting bush 37 or the cylindrical body 42 by means of a fixture 53 having a radial slot groove 53A and a bolt 54.

Here, the impeller axial direction shift mechanism 40 includes a slide bearing 41, a cylindrical body 42, a positioning pin 43, two grooves 44° 45 provided on the rotating shaft 35, and a movable member attached to the cylindrical body 42 by respective fixing devices 53. Impeller 4
8.

A threaded portion 56 with a large lead angle is formed at the left end of the rotating shaft 35 in FIG. 1, and a rotating shaft drive mechanism 60 is connected to this threaded portion 56. This rotary shaft drive mechanism 60 includes a drive pulley 62 incorporating a nut 61 that is screwed into the threaded portion 56, and a reducer 64 (see FIG. 2) is connected to the drive pulley 62 via a timing belt 63. The speed reducer 64 is connected to a rotational drive source such as a motor (not shown).

A rotational direction phase adjustment mechanism 70 is connected to the drive pulley 62, which adjusts the rotational phase of the impeller 38, 48 by moving the drive pulley 62 in the axial direction. As shown in detail in FIG. 1, this rotational direction phase adjustment mechanism 70 has an operating section whose negative end (right end) is connected to the drive pulley 62 via a bearing 71 so as to be rotatable and immovable in the axial direction. The control shaft 72 is provided as an operating shaft 72. The operating shaft 72 is rotatably and axially movably supported by the frame 11 via a bearing 73 and a bearing box 74A, and the other end is supported by a bracket 74.
1 2 is supported by a nut 75 built in B. At this time, a threaded portion 72A having a normal lead angle or a smaller lead angle is formed in the portion of the operating shaft 72 that is supported by the nut 75.
2A is screwed into a female threaded portion 75A formed in the nut 75. Therefore, when the operating shaft 72 is rotationally driven, the operating shaft 72 moves forward and backward by a predetermined amount in the axial direction due to the action of the threaded portion 72A. A handle 76 is fixed to the other end (left end) of the operating shaft 72 to facilitate rotation of the operating shaft 72, and a locking member 77 is attached to the operating shaft 72 between the handle 76 and the bracket 74B. It is fitted. This locking member 77 is attached to the bracket 7
4B with screws, and as shown in FIG.
7A and is capable of tightening this slotted groove 77A, and by tightening this tightening screw 78, the operating shaft 72 can be fixed with the locking member 77,
The position of the rotated operating shaft 72 can be fixed by the handle 76.

Note that in FIG. 2, a take-out conveyor 80 is provided below the impeller device 30, and a stopper 81 is provided for allowing the printed paper transferred by the impeller device 30 to fall onto the take-out conveyor 80 side. . Further, the reference numeral 91A shown below the impeller 38, 48 in FIG. 1 indicates the size (width) and delivery position of the printing paper that has not been chopper-folded, and the reference numeral 91B indicates the delivery position of the chopper-folded printing paper. and the size (width).

Next, regarding the operation of this embodiment configured as described above,
explain.

In FIG. 2, the drive roller 14 side of the printing press ejection section 10 is driven, and the lower conveyor belt 12 and the upper conveyor belt 1 are
3 at the same speed. In this state, the rotating shaft drive mechanism 60 is also driven, and each impeller 38, 48 is also rotated. At this time, the timing for carrying out the folded printed paper sent from the terminal end of the lower and upper conveyor belts 12 and 13 and the storage space formed between each blade 52 of the impeller 38 and 48 of the impeller device 30 are determined. It is necessary to match the timing when the part rotates toward the discharge end side of both belts 12 and 13.
It is necessary to adjust the phase of the impeller 38, 48 in the rotational direction. This phase adjustment is performed by the rotational direction phase adjustment mechanism 70.

That is, the locking member 77 fixing the operating shaft 72 as the operating section of the rotational direction phase adjustment mechanism 70 is released, and the handle 76 is rotated in a predetermined direction. By rotating the handle 76, the operating shaft 72 is rotated by the action of the threaded portion 72A screwed into the female threaded portion 75A of the nut 75.
is moved by a predetermined amount in the axial direction, and with this movement, the operating shaft 72
A drive pulley 62 connected to one end of the drive pulley 62 also moves in that direction. As the drive pulley 62 moves in the axial direction, the rotating shaft 35 is rotated by a predetermined angle due to the action of the threaded portion 56 which is built into the drive pulley 62 and has a larger lead angle than the nut 61 . Therefore, the key 3 is attached to this rotating shaft 35.
6. The fixed impeller 38 mounted via the mounting bush 37 is displaced in the rotational direction, and the mounting bush 3
The cylindrical bodies 42 connected to the cylinders 7 through the dog clutches 46 are rotated in the same direction, and the movable impellers 48 respectively connected to the cylindrical bodies 42 are similarly rotated by the same angle. Thereby, the phase of each impeller 38, 48 in the rotation direction can be adjusted.

When the phase adjustment is completed in this way, the locking member 77
Tighten the tightening screw 78 to prevent the operating shaft 72 from rotating.

Next, the impeller axial direction shift mechanism 40 is operated depending on whether the printing paper discharged from the printing press discharge section 10 is to be chopper-folded or not.

That is, when not chopper folded, the printing paper 91A is
It is widely sent, and the impeller device 30
The positioning pin 43 is set to the position indicated by the solid line in FIG. Connect them. In this state, the rotation of the rotating shaft 35 is transmitted to the cylinder body 42 via the key 36, the mounting bush 37, and the dog clutch 46, so that the 5 6 movable impellers 48 attached to the cylinder body 42 It is rotated at the same time as the fixed impeller 38 attached to the mounting bush 37, making it possible to convey the printing paper 91A.

On the other hand, when transporting the chopper-folded printing paper 91B, out of the six impellers 38.48 in the figure, one impeller 38.48 at each end is excluded, and the four movable Since the impeller 48 gets in the way of conveying the printing paper 91B, the positioning pin 43 is removed from the groove 44, the cylinder body 42 is made slidable relative to the rotating shaft 35, and moved to the right in the figure. is engaged with the right groove 45. As a result, the cylindrical body 42 and the movable impeller 48 move to the position shown by the two-dot chain line in FIG.
It will no longer interfere with B. If the chopper folding operation is performed in this state, there will be no hindrance to the conveyance of the printing paper 91B by the discharge conveyor 80.

According to this embodiment as described above, there are the following effects.

That is, the chopper-folded printing paper 91B and the impeller 38
．． 48 is achieved by the impeller axial direction shift mechanism 40 that moves the movable impeller 48 in the axial direction of the rotating shaft 35, so there is no need to move the rotating shaft 35 and its drive system, so it is extremely simple and Can be made into a compact configuration.

Further, since the mechanism for preventing interference with the chopper-folded printing paper 91B does not move the drive system of the rotary shaft 35, the rotational direction phase adjustment mechanism 70 can be provided alongside the rotary shaft drive mechanism 60. Furthermore, an impeller axial direction shift mechanism 40
The cylindrical body 42 can be reliably positioned by the action of the positioning pin 43 and the grooves 44 and 45, so that malfunctions will not occur.

Further, the adjustment mechanism 70 that adjusts the phase of each impeller 38, 48 in the rotational direction is performed by a threaded portion 56 with a large lead angle provided on the rotating shaft 35 and a drive pulley 62 that is moved in the axial direction. Therefore, the configuration of the rotational direction phase adjustment mechanism 70 is simple and can be provided at low cost. Moreover, this rotational direction phase adjustment mechanism 70
Since it is provided in the axial direction of 5, it can be installed in a small space.

Furthermore, since the threaded portion 56 formed at one end of the rotating shaft 35 has a large lead angle, the rotating shaft 35 can be easily rotated by moving the drive pulley 62 in the axial direction by the rotational direction phase adjustment mechanism 70. Furthermore, since the lead angle is larger than that of the threaded portion 72A provided on the operating shaft 72, the rotational operation of the handle 76 can be transmitted to the rotating shaft 35 in an enlarged manner.

Further, since the fixed impeller 38 or the movable impeller 48 attached to the mounting bush 37 or the cylinder body 42 is detachably attached by a fixture 53, the printing paper discharged from the printing machine paper discharge section 10 is The mounting position of each impeller 38, 48 can be arbitrarily adjusted according to the width, etc.

Note that the present invention is not limited to the above embodiments,
Modifications, improvements, etc. within the range that can achieve the object of the present invention are included in the present invention.

That is, the drive pulley 62 of the rotational direction phase adjustment mechanism 70
As shown in Fig. 3, the mechanism for moving the
A circumferential groove 62A is provided on the outer periphery of one end of the drive pulley 62, and a spherical portion 79A at one end of a rotary lever 79 serving as an operating portion whose intermediate portion is rotatably supported is inserted into the circumferential groove 62A. By manipulating the rotation angle of the movable lever 79, the axial position of the drive pulley 62 may be changed, and the rotational phase of the rotating shaft 35 may be adjusted via the nut 61 and the threaded portion 56. Additionally, the rotational direction phase adjustment mechanism 70
As in the above embodiment, the drive pulley 62 and the rotating shaft 35
The phase adjustment is not limited to the one in which the phase is adjusted at the connection part with the rotary shaft 35, and other positions may be used.In short, the rotation of the rotary shaft drive mechanism 60 is
Furthermore, it is sufficient if the phase in the rotational direction can be adjusted in the middle of the path of transmission to the impellers 38, 48.

Further, in the above embodiment, the threaded portion 56 provided on the rotating shaft 35 is a male thread, and the threaded portion provided on the drive pulley 62 is a female threaded nut 61, but this may be reversed, and the center of the drive pulley 62 A male thread part is provided protruding from the part.
This male threaded portion may be screwed into a female threaded portion formed at one end of the rotating shaft 35. Further, the screws connecting the drive pulley 62 and the rotation shaft 35 do not necessarily have to have a large lead angle, but in order to easily rotate the rotation shaft 35 by operating the drive pulley 62 in the axial direction, screws with a large lead angle are necessary. Larger angles are advantageous.

However, if a ball screw or the like with a small friction coefficient is used, rotation is possible even with a small lead angle.

Further, when conveying the chiseled printing paper 91B, the number of movable impellers 48 that are moved in the axial direction does not necessarily have to be five as in the above embodiment, and the impellers in the portions that interfere with the printing paper 91B 48 may be moved. At this time, if the fixed impeller 38 in the above embodiment interferes with the printing paper 91B, it may also be moved at the same time.In short, in the present invention, at least a part of the plurality of impellers 38, 48 is moved to perform printing. What is necessary is to prevent interference with the paper 91B. At this time, the movement of the impellers 38 and 48 is not limited to those fixed to one cylinder body 42 as in the above embodiment, but may be movable individually, and the movement structure I don't care. However, if it is made movable using one cylinder 42 as in the embodiment described above, there is an advantage that the operation is simple. Further, this moving operation is not limited to manual operation of the positioning pin 43, but may be performed automatically using an air cylinder or the like.

Furthermore, the mechanism for transmitting or blocking the rotation of the rotary shaft 35 to the cylindrical body 42 side is the dog clutch 4 as in the previous embodiment.
The mechanism is not limited to 6, and other mechanisms such as a car pick coupling or screw fixing may be used. However, dog clutch 46
The advantage of using this is that the configuration is simple.

〔Effect of the invention〕

According to the present invention as described above, a rotational direction phase adjustment mechanism and a mechanism for preventing interference with chopper-folded printing paper can be provided together, and these mechanisms are also simple and compact. There is an effect.

[Brief explanation of drawings]

1 2 Fig. 1 is a sectional view of an impeller device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1 including the printing press paper discharge section, and Fig. 3 FIG. 3 is a cross-sectional view showing a main part of another embodiment of the present invention. 10... Printing machine paper discharge section, 30... Impeller device, 35
...Rotating shaft, 38... Fixed impeller, 40... Impeller axial direction shift mechanism, 42... Cylindrical body, 43... Positioning pin, 44.45... Groove, 48... Movable impeller, 56... Threaded portion, 60... Rotating shaft drive mechanism, 61
... Nut, 62 ... Drive pulley, 70 ... Rotation direction phase adjustment mechanism, 72 ... Operation shaft as operation section,
79... Rotating lever as operation unit, 80... Carrying out belt, 91A... Printing paper not folded by chopper, 91
B...Chopper-folded printing paper.

Claims (3)

[Claims] (1) A rotating shaft rotatably supported by a frame, an impeller attached to the rotating shaft and capable of rotating integrally with the rotating shaft, a rotating shaft drive mechanism that rotationally drives the rotating shaft, and the rotating shaft drive a rotational direction phase adjustment mechanism provided in the middle of a rotation transmission path to the rotational shaft of the mechanism and capable of adjusting the phase in the rotational direction; and an impeller shaft that moves at least a portion of the plurality of impellers in the axial direction of the rotational shaft. An impeller device for a paper discharge section of a printing press, characterized by comprising a direction shift mechanism. (2) In claim 1, the impeller axial shift mechanism includes a cylindrical body that is slidably fitted on the rotating shaft in the axial direction and is rotatable integrally with the rotating shaft when moving to a predetermined position. 1. An impeller device for a paper discharge section of a printing press, characterized in that the impeller device includes at least a portion of the impeller provided on the cylindrical body. (3) In claim 1 or 2, the rotational direction phase adjustment mechanism connects a rotational shaft and a drive pulley of a rotational shaft drive mechanism connected to the rotational shaft via a threaded portion, and An impeller device for a paper discharge section of a printing press, comprising an operation section for moving the drive pulley forward and backward in the axial direction of a rotating shaft.