JPH0120354Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for suctioning and conveying sheet-like objects such as booklets of paper or sheets of paper.

For example, there are various ways to separate and transport stacked sheets one by one, such as feeding stacked signatures into a collating machine pocket in an unraveled state so that they can be taken out one by one. required in the case of However, in a conventional device of this type, for example, as shown in FIG. Since the system was used to send the product through two suction systems, it was necessary to use two systems of suction equipment and to adjust the suction power, which resulted in a complicated and large mechanism, and the drawbacks such as the weakening of the suction power if one suction system was divided into two. It was hot.

An object of the present invention is to provide a suction and conveyance device for sheet-like materials that can properly suction and convey with a single suction system and has a compact structure.

In order to achieve the above object, the suction conveyance device according to the present invention is characterized in that the suction force of one suction system is automatically switched by the action of an operating valve, and suction and conveyance are performed by one suction system. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, this suction conveyance device includes a suction tube 10 that is slidably provided, a hollow shaft 11 that is sealed at both ends, and a shaft that is rotatable around the hollow shaft 11. In this embodiment, a suction roller 12 is provided. Suction tube 10
is a guide 1 provided almost orthogonally to the hollow shaft 11
The rear end, that is, the upper end of the guide 13 is connected to a vacuum pipe 14. Note that a vacuum pipe is a tube or pipe that is connected to a suitable vacuum source and transmits vacuum power. The guide 13 is preferably formed of a tube or a cylinder as shown.

Both ends of the suction tube 10 are open and have horizontal holes 15 at appropriate positions. These horizontal holes communicate with the hollow part of the hollow shaft 11 when the suction cylinder is retracted, and it is preferable that there be two at opposite positions as shown in the figure, but there may be only one. In addition, the hollow shaft 11 has
At the position where each suction roller 12 engages, the suction cylinder 10
It has a hole 16 near the angular position where the tip of the tube protrudes. In the illustrated example, the suction rollers are provided on both sides of the suction cylinder 10, and therefore the holes 16 are provided on both sides, but the number of suction rollers 12 is not limited to two, and may be one. In addition, the hole 16 of the hollow shaft 11
It is not necessary that there be one for each suction roller 12, and in some cases, there may be a plurality of them close to each other. The suction roller 12 is provided with a plurality of radial holes 17 which can communicate with the holes 16 in the hollow shaft. These holes 17 preferably consist of a series of equally spaced holes as shown in FIG. Additionally, the device includes a device for rotating the suction roller 12, which device can be any suitable means such as a belt, gears, friction rollers, or the like.

During operation, the inside of the suction tube 10 is kept in a vacuum by the vacuum pipe 14, but before the suction tube 14 sucks the sheet, the suction tube 10 is in an extended position due to its own weight or in a lowered position, as shown in FIG. In this case, the hole 15 of the suction tube 10 is blocked by the guide 13 and does not communicate with the inside of the hollow shaft 11. Therefore,
All the suction force acts on the tip of the suction cylinder 10. When the sheet A is sucked at the tip, that is, the lower end, of the suction cylinder 10, the suction cylinder 10 along with the sheet is retracted or raised during the guide due to the suction force, and the suctioned sheet is moved to the suction roller 12 as shown in FIG. Contact the outer periphery. Therefore, in this case, the lower end of the suction cylinder 10 is approximately at the same level as the lower part of the outer circumference of the suction roller 12. When the suction cylinder is retracted in this way, the suction cylinder 1
0 communicates with the interior of the hollow shaft 11 via a hole 15, and the suction force is transmitted from each hole 16 of the hollow shaft to the hole 17 of each suction roller 12 that communicates with the hole 16, and the suction force The sheet is also sucked at the outer periphery of No. 12. Since the suction roller 12 is rotating, it suctions the sheet, as shown in FIG.
It is conveyed together with the rollers 12. Suction roller hole 17
are engaged with the holes 16 of the hollow shaft one after another, so that a suction force is applied and the sheets are sent out. When the suction roller 12 is acting on the sheet in this way, the suction force is dispersed to the suction roller via the hollow shaft, so the force acting on the suction cylinder 10 becomes weaker, and the suction cylinder acts on the sheet by the roller. It does not interfere with transmission. When the suction roller 12 sends out the sheet, air is sucked from the tip of the suction cylinder 10, and the suction cylinder 10 descends due to its own weight and returns to the state before suction.

FIG. 5 shows a second embodiment in which the guide 13 is provided as a generally cylindrical hole formed in the hollow shaft 11 and the suction roller 12
Instead, an endless belt 12' is used as the rotating body, which belt is likewise provided with holes 17' which can communicate with the holes 16 in the hollow shaft. In this case too,
It is clear that it can work similarly to the above case.

6 and 7 show a signature transfer device as an application of the device according to the present invention,
In addition to a suction cylinder 10, a hollow shaft 11, and a rotating body 12, this device also includes an endless belt 20 that is hung on both sides of the hollow shaft to drive the rotating body 12, and an endless belt 20 that is placed above the hollow shaft and that is hung on three rollers. Another endless belt 2 whose lower circulating portion contacts the rotating body 12
Contains 1. In operation, when the stacked signatures are lifted close to the transfer device by the lifting device,
When the suction tube 10 suctions and ascends the uppermost signature and brings it into contact with the rotating body 12, and the rotating body sends out the signature, a gap is formed between the endless belt 21, the hollow shaft rotating body 12, and the belt 20. Move it by pinching it and send it out onto the conveyor, etc. on the other side. It is clear that the device of the present invention can also be applied to other devices that handle sheet-like materials.

As mentioned above, the present invention performs a valve action using a hollow shaft and a suction cylinder slidably attached to the hollow shaft, so the suction force can be automatically adjusted and switched with an extremely simple configuration, and it is possible to use only one suction system. The sheet-like material can be conveyed by suction.
Therefore, this device can be made simple and compact, and its reliability can be significantly improved.

[Brief explanation of drawings]

Fig. 1 is a front view of a suction conveyance device according to an example of the present invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a longitudinal sectional view showing a state in which a sheet-like object is being sucked, and Fig. 4 is a longitudinal sectional view showing a state in which a sheet-like object is being sucked. FIG. 5 is a longitudinal sectional view showing another embodiment, FIG. 6 is a side view schematically showing a transfer device using this device, and FIG.
FIG. 3 is a front view of the device shown in FIG. FIG. 8 shows a conventional device. In the figure, 10...Suction tube, 11...Hollow shaft, 12
...Rotating body, 13...Guide, 14...Vacuum pipe, 15...Horizontal hole of suction tube, 16...Hole of hollow shaft, 17...Hole of rotating body.

Claims (1)

[Claims for Utility Model Registration] (1) A suction tube that has at least one horizontal hole and is open at both ends, and a hollow shaft that is sealed at both ends and has a hole at the position where the rotating body described below engages. the suction tube is slidably installed in a guide provided substantially perpendicular to the hollow shaft, an upper end of the guide is connected to a vacuum pipe, and further rotatably installed in the hollow shaft; The suction tube includes a rotating body having a plurality of holes that can communicate with the holes of the hollow shaft, and a device for driving the rotating body, and the suction cylinder sucks the sheet-like object at its lower end and when it rises, the suction tube passes through the horizontal hole. The inside of the hollow shaft communicates with the inside of the suction cylinder, and the lower end of the suction cylinder is approximately at the same level as the lower outer circumference of the rotating body. (2) Utility Model Registration The device according to claim 1, wherein the rotating body is a roller. (3) Utility Model Registration Scope of Claim 1. The apparatus according to claim 1, wherein the guide is a cylindrical body. (4) Utility Model Registration Scope of Claims 1. The device according to claim 1, wherein the holes in the rotating body are a series of holes provided at equal intervals.