JPH0124700B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for changing the direction of sheets of printed paper.

This type of device includes a first conveyance mechanism, which is alternately connected via a switching means to a pair of direction changing mechanisms that can be driven intermittently and have a length of at least one sheet group. In addition, a second conveyance mechanism corresponds to each of these direction change mechanisms, and these second conveyance mechanisms are configured to receive the sheet group and carry it out in a direction opposite to the conveyance direction of the direction change mechanism.

Paper sheets, such as printing sheets fed from a folding device, may be intermediately accumulated in a stacking device before entering a subsequent working station, such as an insertion device, for example. In such a case, if the back wall of the stacking device is a blind wall, the sheets cannot be taken out from the stacking device in the direction in which they were fed.
It must be taken out in the opposite direction from the entrance of the stack device.

In such a case, it is necessary to change the direction of the sheet group.

JP-A No. 58-17215 discloses a direction in which, after a group of paper sheets is accumulated intermediately, the end portion that has been conveyed as a leading edge for this accumulation is conveyed to a location where the next process is performed using the end portion as a leading edge again. A conversion device is disclosed. In this known device, sheets transferred from an incoming conveyor belt to a first transfer point are wound onto a first hub via a point device, and then, upon switching of the point device, are unwound from the first hub. It is then rewound onto the second hub and finally, after the point device has been switched again, it is rewound from the second hub and sent to the outgoing conveyor belt, so that it can be wound both on the incoming conveyor belt and on the outgoing conveyor belt. However, the paper sheets are brought in or taken out with the same end as the tip.

However, in this known device, the sheets from the incoming conveyor belt are first wound onto a first hub, then unwound from the first hub and onto the second hub, and then unwound from the second hub. Not only does this make the mechanism complicated, but the process of winding the sheets around the two hubs and unwinding them becomes a complete idle time, and during this time the loading and unloading of the sheets is interrupted. There was a problem that this resulted in inefficiency.

An object of the present invention is to overcome the problems of the conventional paper sheet turning device and to provide a sheet turning device made of printed paper that improves work efficiency.

In order to achieve the above-mentioned problems, the paper sheet direction changing device based on the present invention includes a first conveyance mechanism that conveys a sheet group of a predetermined length of printed paper in one direction. A pair of second transport mechanisms for transporting in one direction and the opposite direction are provided so as to be able to be driven intermittently, and the pair of transport mechanisms having a length of at least one sheet group are connected to the first transport mechanism via a switching means. The second conveying mechanism has a portion guided in parallel with the corresponding feeding mechanism, and can be driven intermittently in cooperation with the feeding mechanism, and can be driven intermittently in cooperation with the feeding mechanism. A delivery means is provided for delivering a group of paper sheets to the second transport mechanism that is in a stationary state.
The structure is configured such that the transfer mechanism is delivered to the parallel portion of the conveyance mechanism.

Hereinafter, the present invention will be described based on examples with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a side plate of a machine frame, on which a driven shaft 2 is rotatably supported. A plurality of guide rollers 3 are fixedly installed adjacent to the driven shaft 2, some of these guide rollers 3 form the terminal end of the first conveyance mechanism 4, and the others form the starting end of the switching member 5. . The first transport mechanism 4 and the switching member 5 both include a plurality of endless belts. The switching member 5 constitutes a switching means, and is made swingable by a pneumatic cylinder 6 between an upper end position shown by a solid line and a lower end position shown by a chain line. This switching member 5 has feeding mechanisms 7 and 8 that are intermittently driven at the upper end position and the lower end position, respectively.
connected to. These feeding mechanisms 7, 8 have a length TS of one group of paper sheets at least. Therefore,
The feeding mechanisms 7, 8 are selectively connected to the first conveying mechanism 4 via the switching member 5. Central drive unit 11 that drives the belt between the first conveyor 4 and the switching member 5
selectively drives the belts of the feed mechanisms 7 and 8 via clutches 9 and 10, respectively. Second transport mechanisms 12 and 13 correspond to the transport mechanisms 7 and 8, respectively, and portions thereof extend parallel to the corresponding transport mechanisms 7 and 8. These second transport mechanisms 12 and 13 correspond to the corresponding feed mechanisms 7 and 8.
It is now possible to drive in the opposite direction to the transport direction.

Next, the feed mechanism 7 will be described in detail with reference to FIG. The other feeding mechanism 8 has a similar structure, so its explanation will be omitted. The guide rollers of the feed mechanism 7 are arranged on a carriage 14, which can be slid horizontally and at right angles to the direction of movement of the feed mechanism 7 by means of a plurality of guide rods 15. Further, these guide rods 15 are attached to a base 16. The base 16 has a pair of side plates 17 and 18 connected by a horizontal frame 19.

20 is a cylinder-piston unit whose piston rod engages with the carriage 14. The cylinder-piston unit 20 is connected to the side plate 17 and moves the carriage 14 together with the feed mechanism 7 between the position shown in solid lines and the position shown in dashed lines. In the solid line position, the switching member 5
is in the upper end position, the upper feed mechanism 7
Consistent with Further, the second transport mechanisms 12 and 13 each consist of a transport body that grips the sheet group TS from the side, and an example thereof is the one described in Swiss patent No.
Disclosed in No. 322276.

The operation of the illustrated embodiment will now be described.

Groups of paper sheets TS are sequentially placed on the belt of the first transport mechanism 4 at intervals L and are transported. When the switching member 5 is in the raised state as shown by the solid line in FIG. 1, the preceding sheet group TS is guided to the upper feeding mechanism 7. In this case, the belts of the first conveyance mechanism 4, switching member 5, and feed mechanism 7 are all driven at the same speed. This preceding group of leaves
As soon as the terminal end of the TS passes over the terminal end of the switching member 5, the cylinder 6 is actuated and the switching member 5 is swung to the position indicated by the dashed dot line in FIG. At the same time, the clutch 9 is disengaged and the feed mechanism 7 is stopped. Then, the subsequent sheet group TS is guided to the lower feeding mechanism 8. The cylinder-piston unit 20 is then actuated to move the upper transport mechanism 7 towards the upper second transport mechanism 7 (i.e. to the right in FIG. 2).
will be moved. Up to this point, the upper second transport mechanism 12 and the upper feed mechanism 7 are kept stationary. Next, the upper second transport mechanism 12 transports the paper sheet group.
When the TS is gripped laterally, the upper feeding mechanism 7 is returned to the second left end and is ready to receive the next sheet group TS. During this time, the upper second transport mechanism 12 transports the gripped sheet group TS to a usage site (not shown) in a direction opposite to the transport direction of the upper transport mechanism 7. In this way, the sheet group TS is conveyed to the above-mentioned usage site through the upper second conveyance mechanism 12 while maintaining its original arrangement.

While the upper feeding mechanism 7 is receiving the sheet group TS, the lower feeding mechanism 8 moves toward the lower second conveying mechanism 13 in the same way as the upper feeding mechanism 7 described above. The sheet group TS placed on the top is delivered to the second transport mechanism 13 on the lower side.

In the second embodiment shown in FIG. 3, the second conveyance mechanism 12 is constituted by a conveyor belt that is parallel to the feed mechanism 7 and performs a conveyance movement in the opposite direction.
The rail 21 connects the feed mechanism 7 and the second transport mechanism 12
A carriage 22 is provided on the rail 21, which extends laterally over the entire length of the upper region of the rail 21 and is movable between the following two end positions. The carriage 22 is the feed mechanism 7
is one of these end positions, and the carriage 22 is located above the second transport mechanism 1.
The position when it is above 2 is the current position.
The carriage 22 is moved by a cylinder-piston unit 24. The trolley 22 has a pair of guide members 25 that protrude downward and correspond to both arms of the fork.
A bar 26 is supported by these guide members 25 so as to be movable up and down. On this bar 26, the trolley 2
A cylinder/piston unit 2 that is attached to 2 and moves the bar 26 up and down as shown by the arrow in the figure.
8 piston rods 27 are engaged. Bar material 2
Threaded spindle 2 at each end of 6
9 is provided so as to extend along the axial direction of the bar 26. A link 30 is supported on each spindle 29. The nut 29' adjusts the distance between the links 30 and restricts the outward swinging position of the frame 31 connected to the links 30.
A support part 32 is formed at the lower end of the frame 31 by being bent so as to face inward from each other, so that both ends of the feeding mechanism 7 can hold both ends of the sheet group TS placed thereon. ing. frame 31
is rotated by the pneumatic cylinder-piston unit 31' between an outer position shown in dashed lines and an inner position shown in solid lines.

To explain the operation of the embodiment shown in FIG. 3, first, the cylinder-piston unit 28 is activated to lower the bar 26, and then the pneumatic cylinder-piston unit 31' is activated to lower the frame 31. The supporting part 32 is rotated from the outer position to the inner position, and holds the sheet group TS placed on the feeding mechanism 7 at both ends thereof. Next, the sheet group TS is pulled up from the feeding mechanism 7 by the frame 31 by operating the cylinder-piston unit 28. after that,
The trolley 22 travels to above the second transport mechanism 12, where the cylinder-piston unit 2 is moved again.
8, the sheet group TS is lowered down the bar 26 until it comes into contact with the second transport mechanism 12, and the frame 3 is moved down by the pneumatic cylinder piston unit 31'.
1 is rotated to the outer position, and the sheet group TS is placed on the second conveying device 12. Thereafter, the frame 31 is pulled up by the cylinder-piston unit 28 and placed back onto the feed mechanism 7. During the process of lifting the frame 31 by the cylinder-piston unit 28 and returning it upward to the feeding mechanism 7, the second conveying mechanism 12 is driven, and the sheet group TS placed thereon is transferred to the feeding mechanism 7. It is transported to the next processing site in the opposite direction to the transport direction.

In the third embodiment shown in FIG. 4, the feeding mechanism 7 is composed of a pair of conveyor belts 33 parallel to each other, and both side edges of the sheet group TS fed onto these conveyor belts 33 via the switching member 5 are is carried. In this embodiment, the second conveyance mechanism 12 consisting of a pair of mutually parallel conveyor belts 34 is arranged above the feed mechanism 7 rather than beside it. The conveyor belt 34 is supported by a frame 35 suspended in a pendulum shape, and can be driven by operating the clutch 9. Frame 35 is pivot 3
7, and is adapted to be rotated by a pneumatic cylinder/piston unit 36 between the solid line position and the dash-dotted line position in FIG. A plate 38 is arranged between the two conveyor belts 33 in such a way that it can be moved up and down by a cylinder-piston unit 39. As soon as the sheet group TS is placed on the feed mechanism 7, the cylinder piston unit 3
6 rotates the frame 35 and the belt 34 supported thereon outward. Next, the cylinder-piston unit 39 operates to push up the plate 38, and the sheet group TS placed on this plate 38 is pushed up from the conveyor belt 33.
At the same time that the plate 38 reaches the upper end position indicated by the dashed line in FIG.
The frame 35 is rotated inward by the unit 36, and when the conveyor belt 34 comes below both sides of the sheet group TS, the cylinder-piston unit 39 lowers the plate 38 to the solid line position. As a result, both side edges of the sheet group TS are placed on the conveyor belt 34, and the sheet group TS is conveyed by these conveyor belts 34 in the opposite direction to the conveyor belt 33 to the next processing site.

[Brief explanation of drawings]

The drawings show an embodiment of the device for changing the direction of paper sheets made of printed paper according to the present invention, and FIG. 1 is a side view of the first embodiment, and FIG. FIG. 3 is a sectional view of the second embodiment, and FIG. 4 is a sectional view of the third embodiment. 4...first conveyance mechanism, 5...switching member, 7,
8... Feeding mechanism, 12, 13... Second transport mechanism, 14... Carriage, 15... Guide rod, 20... Cylinder piston unit, 2
1...Rail, 22...Dolly, 23...Roller,
24...Cylinder piston unit, 25...
...Guide member, 26...Bar material, 27...Piston rod, 28...Cylinder piston unit,
29...Threaded spindle.

Claims (1)

[Claims] 1 Equipped with a first conveyance mechanism that conveys a group of printed sheets of a predetermined length in one direction, and can intermittently drive a pair of second conveyance mechanisms that convey the group of sheets in the opposite direction to the one direction. in which a pair of feeding mechanisms each having a length of at least one sheet group are alternately connected to the first feeding mechanism via a switching means, wherein the second feeding mechanism is a delivery mechanism that has a part guided in parallel with the feeding mechanism, can be driven intermittently in cooperation with the feeding mechanism, and delivers a group of paper sheets from the feeding mechanism to the corresponding part of the second conveying mechanism; Means is provided, and the sheet group placed on the feeding mechanism in a stationary state is delivered by the delivery means to the parallel part of the second conveying mechanism in a stationary state. Features: A device for changing the direction of paper sheets made of printed paper.