JPH068125Y2 - Temporary paper receiving device for sheet-fed printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention temporarily inserts a sheet receiving member into a paper drop path before inserting a plate removing plate in the plate removing operation of a sheet-fed printing press. The present invention relates to a temporary paper receiving device that receives a sheet.

[Conventional technology]

In the printing operation by the sheet-fed printing press, after printing, the paper that is carried while being held by the claws of the traveling paper ejection chain is released from the claws of the carrying end part and is dropped and stacked on the paper stacking table. . In such a paper discharge operation, when a large amount of paper is stacked at one time, which is called stick stacking, the weight of the paper causes the printing surface to dry off, so it is possible to stack paper in small batches. The plate removing device has been conventionally attached.

This type of plate removing device has conventionally been provided with a pair of left and right guide rails that can be opened and closed in the horizontal direction, and a plate removing plate that is inserted into the closed guide rails. Paper is stacked by repeatedly inserting a corner between the stacking plates. Further, in recent years, a chamfering device has been developed in which a chamfering plate is inserted into hooks provided at regular intervals on an endless chain running in a vertical direction.

And, the inserting operation of the plate removing plate in this type of plate removing apparatus requires skill because a quick operation of instantaneously inserting it between the continuously falling paper and the paper is required, Further, since the paper may be damaged when it is inserted, a temporary paper receiving device for temporarily receiving the falling paper at the time of inserting the plate is attached to this type of plate removing device. This temporary paper receiving device is equipped with a telescope type rod-shaped body that is ejected by air pressure and a paper receiving member such as a piston rod that is advanced by the air pressure of the air cylinder. While temporarily receiving the falling paper, insert the planing plate below it, and after stacking the specified number of sheets, move this paper receiving member out of the paper drop path to move the paper from the paper receiving member onto the planing plate. It is something to transfer.

[Problems to be solved by the invention]

However, in such a conventional temporary paper receiving device, when the rod-shaped body serving as the paper receiving member enters or leaves the drop path of the paper, the paper rubs against the rod-shaped body and the paper is damaged. As a result, there is a problem in that the paper is damaged and the paper is misaligned due to the frictional resistance when rubbing against each other, resulting in poor paper alignment.

[Means for solving problems]

In order to solve such a problem, in the present invention,
A roller having a horizontal axis perpendicular to the axis of the piston rod is pivotally attached to the tip of the piston rod as a paper receiving member that enters the paper drop path by the pressure of the liquid sent to one end of the cylinder. A belt fixed at one end and stretched along the piston rod is attached to this roller and folded back, and then the other end is wrapped around a rotating body, and a spring member that applies a rotational force in the belt winding direction to this rotating body is attached. Provided.

[Action]

When a predetermined amount of paper is stacked on the front plate removing plate, the fluid is sent to the head end side of the cylinder, and the piston rod enters the paper dropping path at high speed. At the time of entry, the roller integrated with the piston rod advances and the belt abutting against it expands while being unwound against the spring force of the spring member, and the belt covers the piston rod and rolls the paper. receive. Therefore, the paper and the piston rod do not rub against each other, and the paper is not scratched or displaced due to frictional resistance. After inserting the plate removing plate, when the amount of paper received by the belt reaches a predetermined amount, the piston rod retracts, the paper on the belt rides on the plate removing plate, and shifts to regular paper ejection. When the piston rod retracts, the belt is wound around the rotating body that is rotated by the spring force of the spring member, so that the belt does not sag. Also, the paper and the piston rod do not rub against each other.

〔Example〕

1 to 9 show an embodiment of a temporary paper receiving device of a sheet-fed printing press according to the present invention. FIG. 1 is a side view thereof, FIG. 2 is a plan view thereof, and FIG. FIG. 4 is a front view as seen from A, FIG. 4 is a side view of a connecting portion between a belt and a spring member, FIG. 5 is a sectional view of a belt winding portion, and FIG. 7 and 8 are plan views, FIG. 8 is a cross-sectional view of the tip end portion of the piston rod, and FIG. 9 is a side view. This embodiment shows an example in which the present invention is applied to an endless chain type plate removing device, and a vertical endless chain having a plurality of hooks arranged at predetermined intervals at four corners of a paper ejecting device (not shown). No.) is stretched and is configured to run at a predetermined speed corresponding to the speed of the paper 1 that is discharged and falls. Reference numeral 2 denotes a plate removing plate that is horizontally inserted onto a hook that descends as the endless chain travels, on which falling paper is stacked, and a new plate removing plate 2 is inserted every time a predetermined amount is stacked. It is configured to be. A bracket 4 is supported by a pair of left and right screw shafts 3 (only one of which is shown) rotatably supported by left and right frames (not shown) sandwiching the drop path of the paper 1. A side-by-side plate 6 formed in the shape of a rectangular plate is fixed by a set screw 8 via a holder 7 to a tip end portion of a side-by-side shaft 5 that is pivotally supported by a bracket 4 so as to be movable back and forth. With this configuration, when the side-by-side shifting shaft 5 moves forward and backward by the cam mechanism (not shown), the side-by-side shifting plate 6 moves forward and backward with respect to the side edge of the stacked sheets 1 as shown by a solid line and a chain line in the figure. ,
The edges of the paper are aligned. Further, by rotating the left and right screw shafts 3 in synchronism with each other, the lateral aligning device as a whole is configured to correspond to the paper size.

A plurality of sets of temporary paper receiving devices 10 are provided in the vicinity of the lateral aligning devices on both sides configured as described above. That is, a plate 11 parallel to the horizontally long rectangular plate-shaped bracket 11 supported by the bracket 4 is supported by a plurality of pins 13, and an air cylinder 14 is axially mounted on the plate 12. It is fixed by a nut 15 so as to be orthogonal to the plane of the side-by-side plate 6. Reference numeral 16 is a piston rod that moves forward and backward by the air pressure of the air cylinder 14,
A U-shaped head 17 is screwed into its tip screw portion and is fixed by a nut 18, and a roller 19 is rotatably attached to the head 17 via a pin 20. Has been done. 21 is formed in an L shape and is a nut 18
It is a detent that is fixed to the head 17 with a bolt 22 and a bolt 22, and has a tip engaged with a groove of the pin 20.
It is configured to regulate the rotation and the movement in the axial direction. Reference numeral 23 is a bolt that connects the tip of the head 17. The piston rod 16 and the head 17 pass through the through hole 6 a provided in the side-by-side plate 6 and move back and forth.

Reference numeral 24 denotes a belt, one end of which is fixed to the bracket 11 on the side of the air cylinder 14 by a bolt 25 and a presser foot 26, and is a piston rod 16 at a forward position shown by a chain line in the drawing.
It is stretched along with and is folded back toward the air cylinder 14 while being in contact with the semicircle of the roller 19. On the other hand, below the head 17 retracted to the retracted limit, there are a pair of rectangular plates 27, three bolts 28 connecting the rectangular plates 27, and a cylinder 29 clamped and fixed to the plates 27 by tightening the bolts 28. The housing 30 is bolted to the bracket 11 via a pair of L-shaped brackets 31, and the other end of the belt 24 folded back from the roller 19 extends from the upper opening of the cylinder 29 to the housing. It has been led into 30. Housing 30
The spring shaft 32 fixedly supported at the center of the coil is wound with a winding spring 33 as a spring member formed in a band shape. The winding spring 33 wound around the winding spring 33 has a cylindrical shape. A rotatable winding tube 34 as a rotating body on the cylinder side is fitted. The belt 24 inserted from the opening of the cylinder 29 is wound around the winding tube 34, and an inner end of the winding is inserted from a split groove 34 a provided in the winding tube 34 to form a winding spring 33. Rivet 35
Is fixed by. In the wound state of the belt 24 shown in FIG. 5, the winding tube 34 is given a slight rotational force in the winding direction of the belt 24 by the winding spring 33 so that the belt 24 is tensioned, and the piston rod 16
When the belt 24 is moved forward and the belt 24 is rewound, the spring force is further accumulated in the winding spring 33, and the belt 24 holds the tension force.

It should be noted that the temporary paper receiving device 10 is provided in a plurality of right and left sets at predetermined intervals, and if necessary, a plurality of sets is also provided on one side in the front-rear direction.

The operation of the temporary paper receiving device configured as described above will be described. After printing, the paper 1 that is gripped and conveyed by the nail of the discharge chain is released from the grip of the nail at the discharge position,
It is dropped and stacked on the plate removing plate 2. At the time of loading, the sideways plates 6 are reciprocally moved by the cam mechanism, so that the edges of the sheets are vibrated and aligned. When the endless chain descends according to the paper discharge and a predetermined amount of paper 1 is loaded on the front plate removing plate 2, the air pressure to the air cylinder 14 causes each piston rod 16 to move forward at a high speed, and the paper 1 Enter the fall path. In this case, the roller 19 of the head 17 moves forward together with the piston rod 16, and the other end of the belt 24, which is abutted on the roller 19 and has one end fixed to the bracket 11, is unwound while rotating the winding tube 34. Since the winding spring 33 fixed to the spring shaft 32 is rotated at the other end as the winding tube 34 rotates, the winding spring 33 is twisted.
A torsion spring force is accumulated in the belt 3, and the belt 24 is rewound while maintaining a tension state. In this way, since the plural belts 24 enter into the falling path of the paper 1, the paper 1 that continues to fall is received by these belts 24 and is stacked thereon.

Since the next hook is located below the piston rod 16 while the paper 1 is loaded on the belt 24 in this manner, the next plate removing plate 2 is inserted into this hook. Next, when air is sent to the head end side of the air cylinder 14, the piston rod 16 retracts and the belt 24 tries to sag, but the winding tube 34 is rotated by the accumulated spring force of the winding spring 33. Therefore, the belt 24 is wound around the winding tube 34 while maintaining the tension state. In this way, the piston rod 16 retreats from the falling path of the paper 1, so that the paper 1 loaded on the belt 24 is transferred onto the lower plate removing plate 2 and a normal paper discharge state is entered.

In such a temporary paper receiving operation, the piston rod 17 that enters and leaves the falling path of the paper 1 is always covered with the belt 24 in a tensioned state, and the paper 1 directly contacts the piston rod 16. Smooth belt 2
Since it is in sliding contact with the surface of No. 4, the paper 1 is not scratched or displaced due to frictional resistance.

When the paper size is changed, when the left and right screw shafts 3 are rotated synchronously, the lateral shift plate 6 moves to correspond to the paper size and is temporarily supported by the bracket on the lateral shift device side. The paper receiving device 10 also corresponds to the paper size.

Although the present embodiment shows an example in which the present invention is applied to an endless chain type plate removing device, it can be similarly applied to a type plate removing device in which a plate removing plate is inserted into a freely openable guide rail.
Has the same effect.

[Effect of device]

As is apparent from the above description, according to the present invention, in the temporary paper receiving device of the sheet-fed printing press, the piston rod as the paper receiving member that enters the falling path of the paper by the pressure of the fluid sent to one end of the cylinder. A roller having a horizontal axis perpendicular to the axis is pivotally attached to the tip of the, and a belt fixed at one end on the cylinder side and stretched along the piston rod is attached to this roller and folded back, and then the other end. Is wound around a rotating body, and a spring member that applies a rotational force in the belt winding direction is provided on this rotating body, so that the piston rod that enters and leaves the paper falling path for receiving the paper is always Sliding contact with the smooth surface of the belt that holds the tension makes it possible to reduce the amount of wasted paper without damaging the paper, and because the friction resistance due to sliding contact is small, the paper does not slip and the paper alignment function is improved. improves.

[Brief description of drawings]

1 to 9 show an embodiment of a temporary paper receiving device of a sheet-fed printing press according to the present invention, FIG. 1 is a side view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is FIG. FIG. 4 is a front view of A of FIG. 4, FIG. 4 is a side view of a connecting portion between a belt and a spring member, FIG. 5 is a sectional view of a belt winding portion, and FIG. 6 is a partially cutaway front view of a belt and spring member housing. FIG. 7 is a plan view of the same, FIG. 8 is a cross-sectional view of the tip of the piston rod, and FIG. 9 is a side view of the same. 1 ... Paper, 2 ... Chamfering plate, 10 ... Temporary paper receiving device,
11 …… Bracket, 14 …… Air cylinder, 16 ……
Piston rod, 17 ... Head, 19 ... Roller, 24
...... Belt, 25 …… Bolt, 30 …… Housing, 3
2 ... Spring shaft, 33 ... Winding spring, 34 ... Winding tube.

Claims (1)

[Scope of utility model registration request] 1. A temporary paper receiving device for a sheet-fed printing press, comprising a cylinder and a piston rod that enters into a paper drop path by the pressure of a fluid fed to one end of the cylinder. A belt having a horizontal axis perpendicular to the axis is pivotally attached, one end is fixed to the cylinder side, and a belt stretched along the piston rod is attached to the roller and folded back to the cylinder side. At the same time, the other end of the belt is fixedly wound around the rotating body on the cylinder side, and a spring member is provided to apply a rotating force in the belt winding direction to the rotating body. Temporary paper receiving device.