JP2553469B2 - Sheet-fed printing machine Automatic discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is capable of automatically ejecting a printed book accumulated on a lift table in a sheet ejection portion of a sheet-fed printing press such as offset printing. The present invention relates to an automatic copy ejecting device.

[Conventional technology]

In the current offset sheet-fed printing press, the following procedure is used to discharge a printed sheet. That is, when the stack of books stacked on the pallet placed on the lift table becomes full, the stack of paper is inserted above it using the guide rails, and the discharged stack of books is stored in the stack. It is loaded on the top one by one, and the elevator is lowered to the floor in the meantime. Next, the operator operates the hand lift to raise and hold the print book on the lift table together with the pallet, and pulls it out of the lift table. After that, quickly place an empty pallet at a predetermined position on the lifting platform, and raise the lifting platform to a position where the empty pallet that held contacts the paper stack inserted in the guide rails and can hold the paper stack. ,afterwards,
Remove the guide rails and hold the paper pile on the pallet on the lift. It should be noted that, during this time, since the printed books are sequentially stacked on the paper stack plate, it is desirable to complete the above work as soon as possible.

[Problems to be Solved by the Invention]

However, such a conventional book discharge operation is a series of manual work from the insertion of the stack to the opening of the stack guide rail, which completely restrains the worker.

The present invention has been made in view of the above problems, and provides an automatic booklet discharging device that enables automatic operation of discharging a booklet from an elevator and does not require supply of empty pallets to the elevator. The purpose is to provide.

[Means for solving the problem]

The present invention, which has been made to achieve the above object, has a fixed pallet provided on an elevating table of a sheet discharging unit of a sheet-fed printing press, and is moved adjacent to the elevating table located adjacent to the elevating table. A pair of transport carriages capable of moving together with a space which is wider than the width of the empty pallet, the transport carriage being located below the lowermost stacking plate held by the fixed pallet. SUMMARY OF THE INVENTION An outline of the automatic sheet ejecting device of a sheet ejecting section of a sheet-fed printing press having a holding surface for holding the stack of sheets and a lifting mechanism for holding the stack of sheets. .

[Action]

According to the automatic booklet discharging device having the above-described structure, the booklets are directly stacked on the fixed pallet on the elevating table via the paper stack. At the time of discharging the copy, the elevator is lowered to the floor surface, and then a pair of transport carriages are put under the stack of sheets held on the fixed pallet, and the holding surface of the transport carriage is raised to lift the stack of sheets and the stack above it. After holding the printing book, the pair of transport carriages is moved to a position where it sandwiches an empty pallet placed outside the lifting table, and the holding surface is lowered to hold the stacking board and the printing book on the empty pallet. After taking out the stack and the book from the lift with a pair of transport carriages, the lift is raised to hold the stack temporarily receiving the stack above. In this way, the pair of transport carriages move in and out of the lift table and the holding surface moves up and down, so that the printed book can be automatically discharged to the outside of the lift table.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the present invention, and FIG. 2 is a perspective view similar to FIG. 1 showing a part of the floor surface cut away. In the figure, 1 is a printing machine, 2 is an elevator for accumulating the printed sheets discharged from the printer 1, 3 is a floor surface, and 4 is an empty pallet placed beside the elevator 2. The automatic booklet ejecting apparatus of the present invention comprises a fixed pallet 5 fixed on the upper surface of the lifting table 2.
And a pair of transport carriages 6 that can be moved in and out of the lift 2 at a position sandwiching the fixed pallet 5 and the empty pallet 4. As shown in FIG. 3, the carrier vehicle 6 includes a holding surface 7 and a lifting mechanism 8 such as a hydraulic cylinder for moving the holding surface 7 up and down. When the holding surface 7 is lowered, the size of the carriage 6 can be set below the lowermost stacking plate 9 placed on the fixed pallet 5 of the lifting table 2 as shown in FIG. When the holding surface 7 is raised in this state, the lowermost paper stack 9 can be lifted and held as shown in FIG. In the figure, 10 is the paper stack 9
The printed books, 11 accumulated above are blocks arranged between the stacks 9.

As shown in FIG. 6, grooves 12 and 13 are formed in a part of the floor surface 3 and the lifting table 2, and a driving chain 14 is arranged below the grooves 12 and 13 as shown in FIG. It is designed to be driven by the motor 15. This drive chain 14
A leg 16 provided at the rear end of the carrier truck 6 is connected to the carrier truck 6. Therefore, the carrier truck 6 is driven by the drive motor 15. The groove 12 only needs to have a width that allows the legs 16 to pass therethrough, and therefore can be made smaller than the wheel width of a hand lift or the like and does not affect the passage of the hand lift or the like at all. The drive device for the carrier vehicle 6 is not limited to the one that uses the drive chain 14 shown in the figure, and can be changed as appropriate. For example, a hydraulic cylinder is used, or the wheels of the carrier vehicle are directly driven by a motor. It may be configured.

Next, the operation of the device of the present invention will be described with reference to FIGS. 7A to 7E.

When a predetermined amount of the books 10 are stacked on the fixed pallet 5 of the lifting table 2 via the stacking plate 9, the guide rails above the stack are provided.
Insert the paper stack 9 into 17 and receive the printed sheet sent from the printing machine (Fig. 7A). In parallel with this, the carrier truck 6 located under the lift 2 moves laterally. After that, the lift 2 descends to the floor 3 (Fig. 7B). When the lifting platform 2 reaches the floor surface, the transport carriage 6 enters the lifting platform 2 from the lateral direction at a height lower than the upper surface of the fixed pallet 5 as shown in FIG. 4, and stops. After stopping, the holding surface 7 of the carriage 6 is in the fifth position.
As shown in the figure, it rises higher than the upper surface of the fixed pallet 5, holds the lowermost paper stack plate 9 of the printing book 10 loaded on the lift table, and then the carrier truck 6 moves to the outside of the lift table 2. (7th C
Figure). A conventional empty pallet 4 is set in advance on the side of the lifting table 2 of the paper discharge section, and the carrier 6 moves the printing plate 10 and the paper stack 9 above the empty pallet 4 and then holds them. By lowering the surface 7, the copy book 10 and the stacking plate 9 are reloaded onto the empty pallet 4. On the other hand, after the carrier vehicle 6 moves to the outside of the lifting platform 2, the lifting platform 2 rises again (7D
(Fig.), The fixed pallet 5 is stopped near or in contact with the paper stack plate 9 held by the guide rails 17, and then the guide rails 17 are opened to hold the paper stack plate 9 on the fixed pallet 5. After that, the usual collection of printed books is conducted (7E
Figure).

After transferring the book 10 and the paper stack 9 onto the empty pallet 4, the transport carriage 6 is retracted into the paper discharge unit after the lift 2 is raised (Fig. 7D). After that, the printed sheets 10 stacked on the pallet 4 beside the paper discharge section can be transported by a conventional method. Also,
The transport carriage 6 waits in the paper discharge section until the next time the printed sheets are discharged (Fig. 7E).

In the above embodiment, the transport carriage 6 is retracted into the paper discharge unit, but the upper end surface of the transport carriage is the floor surface at a position farther than the side of the paper discharge unit or under the floor next to the paper discharge unit. You may evacuate by storing so that it may become the same height.

〔The invention's effect〕

As described above, according to the present invention, the printed book is held by the fixed pallet provided on the lift table, and the printed book is taken out from the lift table by the pair of transport carriages and waits in the vicinity of the lift table. Since it is configured so that it can be transferred to a pallet, it is possible to automate the work of discharging the printed sheets from the insertion of the stack of sheets into the guide rail to the opening of the guide rail, thus reducing the burden on the operator. Further, by automating the work of removing the pile of paper sheets and using it together with the device of the present invention, it is possible to perform the work of removing the plate and the discharge of the printed copy, even if unattended.
The number of elements that restrain the operator is reduced, and work can be performed efficiently.

Further, since the apparatus of the present invention transfers the book from the fixed pallet to the empty pallet when discharging the book, it is not necessary to supply the empty pallet onto the lift table during the work of discharging the book, and as a result, the pallet is supplied. It is possible to omit the device that is used, and to avoid the installation of devices that hinder the work around the paper discharge section, and to simplify the copy discharge device.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view similar to FIG. 1 in which a part of the floor surface is broken away, and FIG. 3 is a side view showing a part of a carriage. Figures 4, 5 and 5 are side views of the essential parts for explaining the operation of holding the printing book and the stack of sheets by the carrier, and Fig. 6 is a schematic plan view of the lift and the floor, and Figs. 7A to 7A.
FIG. 7E is a schematic side view showing the operation for discharging the book. 1 ... Printing machine, 2 ... Elevating table, 3 ... Floor surface, 4 ... Empty pallet, 5 ... Fixed pallet, 6 ... Conveyor, 7 ... Holding surface, 8 ... Lifting mechanism, 9 ... Paper Stack plate 10 …… Print book, 12,13 …… Groove 14 …… Drive chain, 15 …… Drive motor 16 …… Leg, 17 …… Guide rail

Claims (1)

(57) [Claims] 1. A fixed pallet provided on an elevating table of a sheet discharging unit of a sheet-fed printing press, and a width of an empty pallet which is arranged adjacent to the elevating table and is movable on the elevating table in a lowered position. A pair of transport carriages that can move together at a wider interval, the transport carriage having a size to fit under the lowermost stack of sheets held on the fixed pallet, and An automatic booklet ejecting device for a sheet ejecting section of a sheet-fed printing press, comprising a holding surface which is raised to hold the paper stack and an elevating mechanism thereof.