JPH0741731Y2 - Paper flow prevention device in the paper output section of the printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a paper flow prevention device for a paper discharge section of a printing press.

<Prior Art> A sheet-fed printing machine is equipped with a paper ejection device for ejecting and accumulating printed paper sheets (hereinafter simply referred to as paper), and the paper is ejected on a paper ejection claw arranged in a paper ejection chain. The end of the paper is clamped and transported,
At the transfer end portion, the paper is released from the paper ejection claws and accumulated on the paper stacking table. Then, each time a predetermined amount of this paper is accumulated, it is taken out from the paper discharge device. In this case, in order to take it out without stopping the machine, a work called board removal is performed.

FIG. 3 is a schematic front view of the paper ejecting unit of the printing machine for explaining the plate removing work, and a paper ejecting chain 2 running between the side frames 1 on both sides from the paper spine side toward the front in the figure.
, A plurality of pawl shafts 3 are arranged at a predetermined interval, and several paper ejection pawls 4 are juxtaposed on the pawl shafts 3. Furthermore, below the transfer end of the paper discharge chain 2,
A paper stacking base 5 is provided so as to be able to move up and down, and a pair of left and right plate cutting guides 6 which are moved in parallel by a link device as shown by a solid line and a chain line in the figure are provided above the paper stacking base 5. Then, the paper 7 held by the paper ejection pawl 4 and transferred is released from the paper ejection pawl 4 and accumulated on the paper stacking table 5, and
Automatically descends as the deposition progresses. When a predetermined amount is accumulated and is taken out of the machine, first, the plate removing guide 6 is moved from the chain line position in the figure to the solid line position and set, and then a paper receiver (not shown) is inserted while watching the falling timing of the paper 7. Then, the gripping side of the falling paper 7 is received, and then the prepared plate removing plate 8 is inserted along the groove of the plate removing guide 6 from the front side of the drawing. Then, when the paper tray is pulled out, the paper 7 that continues to fall is deposited on the inserted chamfering plate 8, so the paper stacking table 5 is lowered to the floor until it is taken out, and it is replaced with an empty car to replace it. When the plate removing guide 6 is opened to the outside after being raised until it contacts the lower surface of the plate 8, the plate removing operation is completed.

The general board removing work has been described above. Further, FIG. 4 shows a state accumulated as a result of the board removing work for preventing back printing, which is called sludge removal. On the table 5, the paper 7 accumulated on the planing plate 8
However, several layers are stacked through the horizontal bar 9. In the case of this sludge removal, every time a predetermined amount of paper 7 is accumulated, the paper stacking platform 5 is slightly lowered and a cross bar 9 is placed. The operation of raising the plate 9 until it contacts the new plate 8 is repeated.

Further, in the paper discharge device, when the weight of the paper on the plate removing plate increases, the plate removing plate lowers against the biasing force of the biasing member,
As a result, a large amount of falling paper can be stacked, and there is a system in which the stacked paper can be taken out even if the printing speed is not reduced.

For example, as shown in FIG. 5, a support bearing 11 is supported on a bracket 10 fixed to the side frame 1 so as to be rotatable in the horizontal direction, and a compression coil spring 13 is provided on a spring shaft 12 of the support bearing 11. The rail-shaped plate removing guide 6 into which the plate removing plate 8 is inserted is fixedly connected to the rail holder 14 which is biased upward and fitted and supported. Needless to say, various types of structures can be considered as the device for raising and lowering the plate removing guide 6.

By the way, in the above-mentioned planing and sludge removing work, prior to the insertion of the planing plate 8, the paper stacking platform 5 is lowered to an eye slightly larger than the thickness of the planing plate 8 within a predetermined time, which is referred to as a constant drop. Although the paper 7 and the planing plate 8 are prevented from interfering with each other, the falling paper 7 does not always settle immediately below. In many cases, the paper 7 is touched and displaced in the insertion direction of the planing plate 8, and along with this, the paper 7 in the upper layer portion that has already been accumulated is also displaced, and there is a problem that waste paper occurs.

Therefore, the applicants previously mentioned in Japanese Patent Publication No. Sho 60-11676, etc., the same as the backing plate that can move forward and backward with respect to the stacking end face of the board stacking plate insertion end side of the printing paper stacked on the paper stacking table. A flat plate is provided with a shift prevention member pivotally attached to the flat plate, and when the plate cutting plate is inserted, the backing plate is moved forward and the shift prevention member is hung so as to contact these with the laminated end surface of the printing paper. In this way, a paper flow prevention device for the paper discharge section of the printing press has been proposed, which is configured so as to restrict the movement of the printing paper and prevent the occurrence of spoiled paper during the plate removing operation.

For example, as shown in FIGS. 6 to 8, chain rails 17 are horizontally installed in the left and right side frames 1 in the front-rear direction via brackets 15 and rail receivers 16. A contact plate bearing 18 composed of a pair of bearing plates is restricted from moving in the vertical direction and is slidably fitted on the chain rail 17 on the chain rail 17.

A contact plate shaft 19 is slidably and rotatably supported by the contact plate bearing 18, and a handle 20 is pivotally attached to one end of the shaft. Further, a pair of sprockets 21 are located on the left and right contact plate bearings 18 and are slidably and non-rotatably fitted on the contact plate shaft 19. The sprocket 21 meshes with the chain rail 17, and when the handle 20 rotates the contact plate shaft 19, the sprocket 21 rotates together to roll on the chain rail 17, and the contact plate shaft 19 is chained. The rail 17 is configured to advance and retreat in the axial direction, that is, in the perspective direction with respect to the rear stacking end surface of the paper 7. Further, a guide shaft 22 parallel to the backing plate shaft 19 is supported between the left and right backing plate bearings 18 behind the backing plate shaft 19.

Then, on the contact plate shaft 19, a pair of contact plate bases 23 are fitted so as to be slidably adjustable, and the leg portions 23a thereof are
The other circular hole is fitted on the guide shaft 22, and the contact plate base 23 is fixed to the contact plate shaft 19 by a bolt 24 screwed into the leg portion 23a.
It is fixed to the guide shaft 22 at the slide adjusting position while allowing the sliding of. Then, in the upper half of the front end surface of the backing plate base 23, the backing plate
25 is screwed on. Further, a slip stopper 26 formed in an elongated rectangular shape is rotatably pivotally attached to a side end portion of the handle 20 of the pad plate base 23. Furthermore, on the backing plate shaft 19,
A cam plate base 27 is located on the operating side of the contact plate base 23, is restricted from moving in the axial direction, and is fitted so as to follow the contact plate base 23 and be slidably adjustable. A cam plate 28 is fixed to the lower surface of the cam plate base 27 with its tip end facing the base end of the stopper 26, and the cam plate 28 holds the contact plate shaft 19 on the operating side. When the pad plate shaft 19 is moved to the opposite side, the stopper plate 26 is pushed to push it in the horizontal direction as shown by the chain line in FIG. It is configured.

In FIG. 6, 29 is a paper pad and 30 is a paper aligning plate.

With this configuration, when the stacking amount of the sheets 7 on the sheet stacking plate 5 reaches a predetermined amount during the sheet discharging operation, the plate removing operation is performed as follows.

That is, first, the left and right plate removing guides 6 are moved from a chain line position in FIG. 7 to a solid line position capable of plate removing by operating a lever (not shown). Then, when the handle 20 is rotated counterclockwise in FIG. 6, the sprocket 21 is moved to the chain rail.
Rolling while meshing with 17, the contact plate 25 moves in a direction approaching the stacking end surface of the paper 7.

Then, when the contact plate 25 comes into contact with a predetermined stacking end surface of the paper 7 and at the same time the handle 20 at the chain line position in FIG. 7 is pulled to the solid line position in the drawing, the cam plate base 27 together with the contact plate shaft 19 is pulled out. Moves toward the operation side, and the left and right detents 26 simultaneously hang down along the stacking end surface of the paper 7 by its own weight.

Next, when the fixed amount lowering push button is pushed, the paper stacking platform 5 lowers for a fixed time set by a timer.

In this way, when the paper stacking platform 5 is started to be lowered by the fixed amount lowering push button, the plate removing plate 8 is inserted into the plate removing guide 6 from the front. The paper 7 is dropped on the planing plate 8 and laminated. At the time of inserting the plate removing plate 8, not only the paper 7 falling directly under the plate removing plate 8 but also some of the upper layers of the already stacked paper 7 are not yet settled but floated. So
These papers 7 are pushed backward by the wind pressure due to the insertion of the plate removing plate 8. However, since the contact plate 25 and the slip stopper 26 are provided here, the movement of the paper 7 is not restricted. Further, since the slip stopper 26 hangs down and presses the laminated paper 7 to the lower layer portion, the laminated sheet will not be broken.

After inserting the plate removing plate 8 in this manner, the pad plate 25
To the original position. Then, the paper 7 is placed on the planing plate 8.
While the sheets are being stacked, lower the paper stack 5 until it touches the floor, take it out of the machine, replace it with an empty car, and then remove it with the planing plate 8
Raise until it touches the lower end surface of the. After that, the plate removing guide 6 is opened to complete the plate removing operation.

<Problems to be Solved by the Invention> However, in the above-described conventional paper flow prevention device, since both the plate removing plate 8 and the backing plate 25 are movable parts,
Since a certain amount of gap is provided in advance between the two, the problem that the printed paper 7 flows out from the gap due to the wind pressure when inserting the plate removing plate 8 into the plate removing guide 6 during the sheet discharging operation. was there. In particular, in the case where the upper and lower devices of the plate removing guide 6 as shown in FIG. 5 are provided, the gap is inevitably increased or decreased and becomes the maximum when the plate removing plate 8 is inserted. Prevention of paper flow was an important issue.

Therefore, it is an object of the present invention to provide a paper flow prevention device for a paper discharge section of a printing machine, which can reliably prevent paper flow by simple means.

<Means for Solving the Problems> In order to achieve the above-mentioned object, a paper flow prevention device of a paper discharge section of a printing machine according to the present invention is a board cutting of a printing paper stacked below a board cutting board to be inserted. This is a paper flow prevention device for a paper discharge section of a printing machine, which is provided with a backing plate supported by a flat surface facing the stacking end surface on the plate insertion end side and supported so as to move forward and backward with respect to the stacking end surface, and a drive means for moving the backing plate back and forth. Then, an elastic member capable of closing a gap between the backing plate and the plate removing plate is fixedly provided.

<Operation> According to the above configuration, when the plate removing plate is inserted, the gap between the backing plate and the plate removing plate is closed by the elastic member, so that the paper flow from the gap is prevented.

Further, the elastic member easily responds to an increase / decrease in the gap.

<Embodiment> An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, in the present embodiment, a pair of left and right contact plate shafts 19, which slidably fit and support the contact plate 25 via the contact plate base 23, are fixed on the plate shaft 19 in a pair. Is moved in the front-rear direction by a pair of left and right racks 33 installed in the front-rear direction via the support rods 32 on the left and right side frames 1 of the paper 7 (see FIG. 2). It is adapted to move back and forth with respect to the stacking plate insertion end side laminated end surface.

Further, the contact plate shaft 19 is a guide shaft 22 (see FIG. 2).
At the same time, it is movably suspended in the front-rear direction with respect to the support rod 32 via a connecting bracket 34 and the like.

A pair of left and right plate removing guides 6 into which the plate removing plate 8 is inserted are installed above the contact plate shaft 19 so as to be openable and closable in the left and right direction via a link device 35.

Further, the pad plate 25 is a flexible brush as an elastic member capable of closing a gap between the pad plate 25 and the plate removing plate 8.
However, it is fixed by being divided into three over the entire length of the pad plate 25.

As shown in FIG. 2 and FIG. 2a, the brush 36 has a sufficient number of bristles 36a having a non-uniform length so that the bristles 36a are sequentially elongated from the front to the rear and the paper flow is prevented. Only, the handle 36b is bundled with a handle 36b having a U-shaped cross section, and the handle 36b is screwed to the rear surface of the contact plate 25 with a predetermined number of bolts 37 whose head does not protrude from the front surface of the contact plate 25. .

In the other construction, a cam plate 28 as a means for rotating the shift stopper 26 pivotally attached to the front surface of the contact plate 25 is bent and formed in an L shape and is attached to the contact plate shaft 19 by the collars 38 on both sides. No. 6 except that the movement in the direction is restricted and it is fitted directly.
Since they are the same as those in FIGS. 6 to 8, the same members as those in FIGS. 6 to 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

With such a configuration, by rotating the handle 20 axially attached to the shaft end portion of the pad plate shaft 19, the pad plate 25 is moved to the paper 7
By moving the backing plate shaft 19 in the axial direction via the handle 20 while moving back and forth with respect to the above-mentioned stacking end surface (see the arrow in FIG. 2), the slip prevention 26 becomes a storage position on the backing plate 25 side. It is self-evident that it pivots with respect to the hanging position from the pad 25.

Further, in this embodiment, when the plate removing plate 8 is inserted into the plate removing guide 6 during the sheet discharging operation, the gap between the upper end surface of the backing plate 25 and the lower surface of the plate removing plate 8 is blocked by the brush 36. As a result, the flow of paper from the gap due to the wind pressure when the plate removing plate is inserted is effectively prevented. Further, since the brush 36 has elasticity, even if the insertion height of the planing plate 8 changes within the range of the free state (see the chain line in FIG. 2) or less (see the chain line in FIG. 2),
The gap can always be closed in response to the change without providing a mechanical mechanism for vertically moving the contact plate 25.

It is needless to say that the elastic member that can close the gap in the above embodiment is not limited to the brace 36, and various other materials such as a leaf spring can be used.

<Advantages of the Invention> As described above, according to the present invention, since the elastic member that can close the gap between the backing plate and the plate removing plate is fixed, the cost can be greatly increased by a simple means. It is possible to surely prevent the paper flow without causing the loss of the waste paper, and it is possible to obtain the effect that it is particularly effective for the printing machine having the upper and lower devices of the plate removing guide.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a first view.
Fig. 2 is a sectional view taken along the line II-II, Fig. 2a is a side view of a brush, Fig. 3 is a schematic front view of a paper discharge unit of a printing machine for explaining plate removing work, and Fig. 4 is an explanation of sludge removing work. Fig. 5 is a front view of the main part of the vertical device of the plate removing guide, Fig. 6 is a side view of a conventional example, Fig. 7 is a front view, and Fig. 8 is a sectional view taken along line VIII-VIII in Fig. 7. is there. In the drawings, 6 is a chamfering guide, 7 is paper, 8 is a chamfering plate, 19 is a contact plate shaft, 20 is a handle, 25 is a contact plate, 26 is a stopper, 28 is a cam plate, 31 is a pinion, 33 Is a rack and 36 is a brush.

Claims (1)

[Scope of utility model registration request] 1. A pad plate which is placed below a plate cutting plate to be inserted and has a flat surface facing the plate stacking plate insertion end side stacking end face, and a backing plate supported so as to be movable back and forth with respect to this stacking end face. A paper flow prevention device for a paper discharge section of a printing machine, comprising a drive means for moving a plate forward and backward, wherein an elastic member capable of closing a gap between the backing plate and the plate removing plate is fixed. A paper flow prevention device for the paper discharge section of a printing machine.