JP3093690B2 - Sheet feeder for printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-stop sheet feeding device for a sheet processing machine, and more particularly to a non-stop sheet feeding device for a sheet rotary printing press, which comprises a frame side wall, a main stack elevating device, and an individualizing device. When the auxiliary pile lifting device is provided, 該補
The auxiliary paper lifting device is connected to the guide rail and this guide rail.
Having a guide device consisting of a support member cooperating with
The auxiliary stack lifting device provides support for the sheet stack.
Place a support bar to take over the rest of the stack from the board
And a U-shaped support for the device.
The rear part formed is freely accessible to the sheet feeder
It is of a type that is removable so that it can be done .

[0002]

BACKGROUND OF THE INVENTION In sheet-fed paper feeders, it is possible to provide auxiliary devices for changing the stack for the continuous ejection of the sheets and for the uninterrupted supply of new sheets. It is known. In this case, the auxiliary pile supporting device is inserted below the rest of the pile and is received by the auxiliary pile lifting device. The sheets are then successively lifted to separate them, new sheet piles are loaded, lifted and removed again.

DE 42 28 616 B1 discloses a sheet feeder for such a printing press. The sheet feeder has a side wall. The auxiliary stack support consists of a plurality of individual bars which can be inserted below the rest of the stack. These bars are mounted on a lifting frame. The lifting frame is continuously raised by the auxiliary pile lifting device. The lifting frame and the auxiliary stack lifting device are guided around the frame, i.e. the side wall of the sheet feeder, in order to save space. A disadvantage of this sheet feeder is that it is a major change over conventional lifting devices. Furthermore, not only the number of transmissions but also the lifting frame must be provided on the outer surface of the feeder frame. Naturally all parts must be protected with extra effort. Furthermore, the lifting frame is guided on only one rail on both sides, which has an instability that cannot be neglected. This is because the front end of the frame is not guided. This is also why the lifting frame has to be transferred to the arm on the back of the lifting element. In order to achieve a certain stability, fixing the removable frame part is troublesome.

[0004]

SUMMARY OF THE INVENTION The object of the invention is to improve a sheet feeder of the type mentioned at the outset by saving space inside the side wall of a sheet feeder with a conventional lifting device. It is another object of the present invention to provide a sheet feeder which is assembled with a reduced number of transmission parts outside a sheet feeder frame, and which further enhances stability and improves handleability of the entire apparatus.

[0005]

In order to solve this problem, according to the configuration of the present invention, there is provided an apparatus for mounting a support rod in front of an apparatus for mounting the support rod.
One part is formed from the auxiliary stack lifting beam
The auxiliary stacking elevating horizontal beam is separate from the guide device.
The main stack and the auxiliary stack are integrated.
Having a probe strip for detecting, said U-shaped
The support can be directly locked to the support member .

[0006]

By arranging a U-shaped member, which is connected to the auxiliary stacking and lifting device inside the feeder frame, as a mounting device for the bar, this bar is mounted on the front side of the feeder in a conventional manner. On the auxiliary pile lifting rails of this type provides space savings for compact devices and overall unit stability for relatively large supporting loads. This is especially useful for the processing of heavy prints. This is because when the thickness of the sheet is large, the relatively high stack residue creates a significant weight load. Operation is simple and reliable.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 1 shows a sheet feeder 1 according to the invention. The sheet feeder 1 includes a main stack elevating device 2, a suction head 3 for separating the sheets from the stack surface, a sheet guide table 4,
An auxiliary pile lifting device 5 is provided. The sheet stack S is loaded by a pallet on the support plate 6 of the main stack lifting device 2. The main stack lifting device 2 is indicated by a broken line, and includes a lifting chain 7, a guide rail 8 and a support plate 6.
And a supporting member 9. The guide rail 8 and the elevating chain 7 are mounted inside the frame side wall 10 of the sheet feeder 1.

The auxiliary stacking and lifting device 5 is similarly displaced toward the rear end of the sheet feeding device 1 with respect to the main stacking and lifting device 2, and the frame side wall of the sheet feeding device 1 is similarly moved. 10 are arranged. The sheet feeder 1 of FIG. 1 is shown in a preparatory stage for stack replacement. Alternatively, the mode of operation when the U-shaped support 11 is assembled is shown. The U-shaped support 11 serves for receiving a support bar 12 for the auxiliary pile H. The manner of assembling the U-shaped support 11 is schematically shown. The U-shaped support 11 is inserted into each of the auxiliary pile elevating devices 5 on both sides of the sheet pile S and is locked. This function will be described in more detail later.

In FIG. 2, a U-shaped support 11 is assembled, and a support bar 12 is inserted below the auxiliary stack H. Furthermore, the pallet of the sheets S may be provided with, for example, longitudinal recesses. This longitudinal recess allows the support bar 12 to be easily inserted below the rest of the stack on the pallet. The rear end of the support rod 12 is located on the U-shaped support 11, and the front end is located on the auxiliary pile elevating horizontal beam 13. The auxiliary stacking elevating transverse beam 13 is arranged at the front end of the sheet feeding device 1 together with an elevating drive device 14. Auxiliary pile lifting device 5
The elevator drive device 15 is assigned to the. Since the lifting drive 14 of the auxiliary stacking lifting beam 13 and the lifting drive 15 of the auxiliary stacking lifting device 5 are connected to each other via the shaft 28, the lifting and lowering movement of these lifting drives 14, 15 is performed. Are performed synchronously.

In other words, the lifting device for the auxiliary stack H comprises an auxiliary stack lifting device 5 with an assembled U-shaped support 11 and a front auxiliary stack with a respectively assigned stack lifting device. And a horizontal beam 13 for elevating and lowering the paper.

In addition to the good accessibility of the device, the operating member and the sheet stack S, a good and reliable sheet feeder 1 is provided.
The mounting inside the can be clearly seen.

FIG. 3 shows in detail the rear part of the auxiliary pile lifting device, or the auxiliary pile lifting device 5 and its guide. Guide rails 16 are shown,
The guide rail 16 is disposed vertically inside the frame side wall 10 of the sheet feeder 1. Guide rail 1
6, together with a pair of guide rollers 17, on each side of the sheet feeder, one support member 18 for the U-shaped support 11 is arranged, and these support members 18 are attached to the lifting chain 19. It is suspended. U-shaped support 11
Are inserted on each one support base 20 arranged on each support member 18, and are locked at the pins 22 by the grooves 21. In this case, the U-shaped support 11 is mounted horizontally on a support 20 and is supported by a pin 22 in a groove 21. Support member 18 toward pin 22
The front end of the U-shaped support 11 is chamfered at an angle so that the U-shaped support 11 can be inserted into a narrow portion between the pin 22 and the support base 20.

FIG. 4 is a sectional view of FIG. A support member 18 surrounds the guide rail 16 from the outside with a lug 23 adjacent to the guide roller 17. A pin 22 for locking the U-shaped support 11 is located on the inner surface. The lifting chain 19 is arranged in the vicinity of the guide rail 16 for a symmetrical load.

FIG. 5 shows a vertically movable front auxiliary stacking elevating transverse beam 13 which is arranged at the front part of the sheet feeder 1. Its end forms a fixing device for the front lifting device. With this fixing device, the auxiliary pile lifting / lowering transverse beam 13 is suspended from the lifting / lowering chain. The auxiliary pile lifting beam 13 has a sensor 24. This sensor 24 detects the contact of the auxiliary stack H by the main stack S and switches to synchronize the drive via a corresponding control or, as usual, the auxiliary stack lifting drive 14, 15 And the auxiliary pile H is lifted by the main pile S together. The support bar 12 is pinched between the layers of paper and removed from the U-shaped support 11, which is the auxiliary pile holding device, and the auxiliary pile elevation beam 13.

FIG. 6 is a sectional view of FIG. The mode of operation normally selected is evident in this drawing.
Sensor 24 is shown in a horizontal position. A U-shaped probe strip 25 is slidably disposed on a plurality of springs 26 in the auxiliary pile lifting beam 13.

This device works as follows.

When the support rod 12 is assembled, its front end is positioned on the probe strip 25. This probe strip 25
Is pushed down against the force of the spring 26. The sensor 24 detects the correct acceptance of the auxiliary pile H by the auxiliary pile elevating device. Thereafter, the empty stacking pallet is removed and the sheet resting device 1 is emptied for a new sheet stack S.

The new sheet stack S is lifted up to the auxiliary stack H. When the auxiliary pile H is lifted by the main pile S, the support rod 12 placed on the probe strip 25
Is lifted. At the same time, the probe strip 25 is lifted from the auxiliary pile lifting beam 13 via the spring 26, and the sensor 24 detects a new operating state by the movement of the probe strip 25, and the auxiliary stacking signal is used. The paper elevating device 15 is stopped. After that, the support rod 1 between the sheet layers
You just need to remove 2.

[Brief description of the drawings]

FIG. 1 is an overall view of a sheet feeder having an assembled U-shaped member.

FIG. 2 is an overall view of a sheet feeder having an assembled U-shaped member in an auxiliary stacking operation state.

FIG. 3 is a view showing a rear auxiliary stacking paper elevating guide.

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is a diagram showing rails of an auxiliary stacking paper elevating guide.

FIG. 6 shows details of FIG. 5;

[Explanation of symbols]

1 sheet feeder, 2 main stack elevator, 3
Suction head, 4 sheet guide table, 5 auxiliary stacking lifting device, 6 support plate, 7 lifting chain, 8 guide rail, 9 support member, 10 frame side wall, 11 U-shaped support, 12 support rod,
DESCRIPTION OF SYMBOLS 13 Auxiliary stack raising / lowering horizontal beam, 14, 15 lifting drive, 16 guide rail, 17 guide roller, 18 support member, 19 lifting chain, 20
Support base, 21 grooves, 22 pins, 23 lugs,
24 sensors, 25 probe strips, 26 springs,
28 axes, S sheet pile, H auxiliary pile

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Wolfgang Matthuis Germany Offenbach Gustav-Stresemann-Strasse 13 (72) Inventor Jens Goebel Germany Zelligenstadt Schleifbachweg 1 (72) Inventor Karl-Heinz Nieten Germany Rolf Rhein-Apotekasse Gasse 1 (72) Inventor Harald Lang Germany Hammerschelling 41 (56) References JP-A-7-257761 (JP, A) −500803 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 1/30 320 B65H 1/14 322

Claims (3)

(57) [Claims] 1. A non-stop sheet feeding device for a sheet processing machine, comprising: a frame side wall (10) , a main stack elevating device (2) , an individualizing device, and an auxiliary stack elevating device.
And (5) the auxiliary pile lifting device.
(5) The guide rail (16) and this guide rail
And a supporting member (18) cooperating therewith.
6, 18), and an auxiliary stacking and lifting device (5)
From the support plate (6) for the sheet pile
For mounting a support rod (12) for taking over
A U-shaped support (11) for the device.
The rear part formed is freely accessible to the sheet feeder
In a form that is removable so that the front part of the device for mounting the support bar (12)
Is formed from an auxiliary pile elevating horizontal beam (13),
The auxiliary stacking elevating horizontal beam (13) is connected to the guide device (1
6, 18), and is separately arranged from the main stack (S).
For detecting the integration of the paper with the auxiliary stack (H)
The U-shaped support (1)
A sheet feeder for a sheet processing machine, characterized in that 1) is directly engageable with said support member (18) . 2. A probe strip (25) provided on the auxiliary pile lifting beam (13) between the end positions by means of a force acting against a spring (26). 13) U is loadable to be movable relative to
2. The device according to claim 1, wherein the device is formed as a letter-shaped member. 3. The auxiliary strip lifting beam (13) is connected to the probe strip (2) on the auxiliary stack lifting beam (13).
A sensor (24) for detecting the position of 5) is provided, and the sensor (24) is connected via a control device to at least the lifting drive of the auxiliary pile lifting device (15). An apparatus according to claim 2.