JPH0459530A - Device for feeding paper sheet by sheet - Google Patents

Abstract

PURPOSE:To automate a conveying work with high efficiency by forcibly deforming a topmost sheet material by means of a sucker and a press means to feed air in a space, formed between the topmost sheet and other sheet, by a blast means, and preventing a plurality of sheet materials from integral take- out. CONSTITUTION:A photograph sensitized material 14 is bent between a sucker 16 and a sheet press means 18, and based on a negative pressure detecting signal from a sensor, displacement operation of the sucker 16 is stopped. When a rotation drive source 40 is reversed and a rod 32 is separated away from a supply magazine 12, a rod 50 of the press means 18 presses the end part of the material 14 against the magazine 12 side, and the material 14 is further bent. In which case, air is fed through a nozzle 62 of a blast means 20 and fed between the topmost material 14 held by the sucker 16 and the next material 14 superposed therewith, the next material 14 is completely separated away from the topmost material 14 and contained in the magazine 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sheet-feeding device for taking out sheet bodies one by one from a magazine in which the sheet bodies are stacked.

[Prior Art] For conveying unexposed photographic materials (for example, sheets of film, etc.) from a supply magazine in which photographic materials are stacked and stored to an exposure position, or for transporting photographic materials after image recording is completed. In order to transport the
A sheet-feeding device is used that takes out the photographic material one by one.

In this case, the sheet body single-fed apparatus is basically configured to press a plurality of suction cups against the photographic photosensitive material, and to suction and hold the photographic photosensitive material with the suction cups under the action of a negative pressure generator. There is.

[Problems to be Solved by the Invention] However, when the suction cup is pressed against the photographic material in this way, the photographic material comes into close contact with the overlapping photographic material below it, and the suction cup is pressed against the photographic material. There is a problem in that a plurality of sheets of photographic material are simultaneously adsorbed by the disk.

The present invention was made in order to solve this kind of problem, and it is possible to use stacked sheets of photosensitive materials, etc.
It is an object of the present invention to provide a sheet body single-fed device capable of reliably and efficiently taking out sheets one by one.

Means for Solving the Problems - In order to solve the above problems, the present invention provides a suction system that sucks up and holds the uppermost layer of stacked sheet bodies in close proximity to it. a disc; a sheet body pressing means disposed at a position in contact with the vicinity of an end of the sheet body; and air between the sheet body suctioned and held by the suction cup and another sheet body overlapping this sheet body. and a blowing means for supplying air to peel off the other sheet body.

[Function] In the sheet body single-feeding device according to the present invention, the sheet body pressing means contacts the end side of the uppermost sheet body stacked, and the inner part of this sheet body is sucked up by the suction cup. Since the sheet body is suctioned and held, the suctioned sheet body is forcibly deformed, and a space is formed between it and another sheet body overlapping it. Then, when air is supplied to this space via the blowing means, other sheet bodies are reliably peeled off from the sheet body being sucked by the suction cup, thereby allowing the plurality of sheet bodies to be taken out in one piece. This can be prevented as much as possible.

[Example] An example will be given regarding the sheet body single wafer apparatus according to the present invention,
A detailed description will be given below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a sheet body single-fed apparatus according to this embodiment. This sheet body single-fed device 10 includes a suction cup 16 for sequentially suctioning and holding photographic light-sensitive materials (sheet bodies) 14 stacked in a supply magazine 12 after image recording has been completed, and an end portion of the photographic light-sensitive material 14. A sheet pressing means 18 disposed in a position where they are in close contact with each other, a photographic material 14 suctioned and held by the suction cup 16, and another photographic material 14 overlapping this photographic material 14.
and a blowing means 20 for supplying air between the photosensitive material 14 and the photosensitive material 14 to peel off the other photographic material 14.

The suction cup 16 and the sheet body pressing means 18 are connected to the driving means 22.
Displaced integrally through. This driving means 22 includes a rotational drive source 24, a guide bar 28 is inserted into a rotating shaft 26 connected to this rotational drive source 24, a holder 30a is fixed to this guide bar 28, and a holder 30a is fixed to this guide bar 28. 30a and another holder 30b are supported by a rod 32 (see FIG. 3).

Both ends of the rod 32 are inserted into the guide groove 34 and the ends are fixed to a pair of belts 36.
6 is hooked up to pulleys 38a and 38b, and a rotational drive source 40 is connected to this pulley 38a.

A suction cup 16 is attached to the holders 30a and 30b. This suction cup 16 has a substantially rectangular parallelepiped-shaped non-flexible base 42 and a flexible suction cup main body 44, and the lower end surface of this base 42 curves the photographic light-sensitive material 14 to produce a sheet-fed effect. It is formed wavy and curved to increase the height. The base body 42 has a thickness that is large enough not to deform during the suction operation of the photographic light-sensitive material 14, while the suction cup main body 44 has a thickness that corresponds to the bottom shape of the base body 42 during the suction operation of the photographic light-sensitive material 14. It is sufficient if the thickness is small enough to allow deformation. Holders 30a, 30b
, there is a conduit 46 whose one end communicates with a vacuum valve (not shown).
The other end side is fixed so as to communicate with the suction cup 16.

The sheet body pressing means 18 is a coil spring (elastic body).
A rod member 50 is provided which is engaged with 48 and supported by the rod 32 so as to be freely retractable.

A detection means 52 is disposed on the rod 32 in the vicinity of the sheet pressing means 18 and detects whether or not a sheet of photographic material 14 is suctioned and held by the suction cup 16. This detection means 52 has a roller 53 that comes into contact with the photosensitive material 14 that is suctioned and held by the suction cup 16, and the rod 32
The detection rod 54 is supported so that it can move forward and backward, and the boulder 30
A plate 56 fixed to a and provided on this detection rod 54
It has an optical sensor (sensor section) 58 driven by.

The air blowing means 20 has a fixing member 60 disposed at a predetermined height position on the end side of the photosensitive material f+14 corresponding to the sheet body pressing means 18, and a nozzle 6 is attached to this fixing member 60.
2 is supported at a predetermined angular position, and a conduit 64 communicating with an air supply source (not shown) is connected to this nozzle 62.

As shown in FIG. 2, a guide roller 70 is provided close to the supply magazine 12, and a conveyance mechanism 74 is provided for feeding the photosensitive material 14 taken out from the supply magazine 12 to the delivery lower 2. It will be done.

This conveyance mechanism 74 includes a plurality of rollers 76 and a bell I/78.
The photosensitive material 14 is once conveyed downward via the roller 76 and the belt 78, then directed upward, and then conveyed horizontally via the guide plate 80 from the lead-out lower 2. It is sent to an automatic developing device (not shown) or the like.

Next, the operation of the sheet body single-fed apparatus configured as described above will be explained.

After the supply magazine 12 is loaded into the sheet body single-fed device 10 and the lid is opened, the rotational drive source 40 operates to release a BOOM!
Rod 32 via J38a, 38b and belt 36
is displaced toward this double magazine 12 side. For this reason,
The roller 53 of the rod member 50 constituting the sheet body pressing means 18 and the detection rod 54 constituting the detecting means 52 is connected to the uppermost photographic material 14 in the supply magazine 12.
At the same time, the suction cup 16 approaches the photographic material 14 (see FIG. 3C).

Here, the detection rod 54 is displaced upward relative to the rod 32, the plate 56 provided on the detection rod 54 drives the optical sensor 58, and the suction cup 16 is moved to a predetermined position relative to the photosensitive material 14. It is detected that this has occurred.

The suction cup 16 starts suction at a predetermined height position,
This suction cup 16 sucks up the photographic light-sensitive material 14 without contacting it, and the photographic light-sensitive material 14 is suctioned. As a result, as shown in FIG.
4 is bent between the suction cup 16 and the sheet body pressing means 18. When the photosensitive material 14 is suctioned, a negative pressure is detected by a sensor disposed in relation to the suction cup 16, and the displacement operation of the suction cup 16 is stopped based on the detection signal.

Next, the rotational drive source 40 is driven in the opposite direction to the above,
When the rod 32 is separated from the print magazine 12, the rod member 50 constituting the sheet body pressing means 18 presses the end of the photosensitive material 14 toward the supply magazine 12 via the coil spring 48, and this photosensitive material 14 becomes even more bent (see Figure 3C).

Therefore, air is drawn out from the nozzle 62 constituting the air blowing means 20, and this air flows between the uppermost photographic material 14 held by the suction cup 16 and the next photographic material 14 overlapping it. The next photosensitive material 14 is completely peeled off from the uppermost photosensitive material 14 and stored in the supply magazine 12.

In this case, when a sheet of photographic material 14 is suctioned and held by suction cup 16, the end portion of this photographic material 14 is bent downward by sheet pressing means 18. In addition, the detection rod 54 that is in contact with the end portion of t1 descends, and the plate body 5
6 is detached from the optical sensor 58, and it is detected that a sheet of photographic material 14 is suctioned and held by the suction cup 16.

Here, if two or more photosensitive materials 14 are suctioned and held by the suction cup 16, the rigidity of the entire photosensitive material 14 increases, and the ends of these photosensitive materials 14 do not bend downward much. Therefore, the plate 56 is engaged with the optical sensor 58. This allows the suction cup 16 to hold a plurality of photosensitive materials 1.
It is detected that the photographic material 4 is being held by suction, and the effect of reliably and efficiently taking out the photographic material 14 is achieved.

When the suction cup 16 reaches a predetermined position under the action of the rotary drive source 40, the rotary drive source 40 is deenergized, and the rotary drive source 24 is driven to move the rod 32 through the rotary shaft 26.
swings within a predetermined angular range, and the photographic material 14, which is suctioned and held by the suction cup 16, is sent out to the transport mechanism 74 side.

While the adsorption action of the photosensitive material 14 by the suction cup 16 is released, the photosensitive material 14 is conveyed downwardly through the rollers 76 and belt 78 that constitute the conveying mechanism 74, and then upwardly. It is further conveyed in the horizontal direction via the guide plate 80 and sent from the lead-out lower 2 to an automatic developing device (not shown) or the like.

In this case, in this embodiment, the uppermost photosensitive material 14 stacked in the supply magazine 12 is sucked up and sucked by the suction cup 16, and a rod constituting the sheet pressing means 18 is attached to the end side of the suction cup 16. The member 50 abuts under the elastic action of the coil spring 48. For this reason,
When the suction cup 16 is displaced via the holders 30a and 30b under the driving action of the rotational drive source 40, the end side of the photographic light-sensitive material 14 is further deformed under the pressing action of the rod member 50, and the photographic light-sensitive material 14 and The air introduced into the space formed between the photosensitive material 14 and the next photosensitive material 14 through the air blowing means 20 ensures that the next photosensitive material 14 is peeled off. As a result, multiple sheets of photographic material 1
4 can be prevented from being sent out integrally to the transport mechanism 74 side as much as possible.

In this case, it is preferable for the air to be supplied from the nozzle 62 from slightly above the horizontal direction in order to enhance the single-wafer effect.

Furthermore, it becomes possible to easily and accurately detect whether or not one photographic light-sensitive material 14 is suctioned and held on the suction cup 16 through the detection means 52. If the suction cup 16 is suctioned, it is only necessary to raise and lower the suction cup 16 again. Therefore, it is possible to achieve the effect that processing of 140 sheets of photographic light-sensitive material can be carried out very quickly.

Furthermore, when using photographic materials 14 of different sizes,
In particular, in the case of a large-sized photographic material 14, the end side that is not sucked by the suction cup 16 at the light end on the take-out side (see Fig. 3a)
There is a risk that the inside (end side in the direction of the arrow) may sag significantly. However, since the guide roller 70 is disposed in the sheet body single-fed apparatus 10 in the vicinity of the supply magazine 12, the end side of the photosensitive material 14 that is not attracted by the suction cup 16 is attached to the guide roller 70. This allows the photographic material 14 to be reliably delivered to the transport mechanism 74.

In this example, the photographic material 1 after image recording is completed.
The case where 4 is transported to an automatic developing device has been explained, but
It can be similarly used when conveying unexposed photographic material 14 one by one to an image recording apparatus.

[Effects of the Invention] As described above, the sheet body single-fed apparatus according to the present invention has the following effects and advantages.

The uppermost stacked sheet body is forcibly deformed via a suction cup and a sheet body pressing means to form a space between it and other sheet bodies overlapping it, and a space is formed between the stacked uppermost sheet body and the other sheet bodies overlapping this, and air is sent to this space through a blowing means. By supplying air, other sheet bodies are reliably peeled off from the sheet body being sucked by the suction cup. As a result, it is possible to prevent a plurality of sheets from being taken out as one unit, and the sheet conveyance work can be performed efficiently and automatically.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a sheet body single-fed apparatus according to the present invention; FIG. 2 is a schematic vertical cross-sectional view of the sheet body single-fed apparatus; FIG. 3 is an explanatory diagram of the operation of the sheet body single-fed apparatus. 10...Sheet body single wafer device 12...Supply magazine 14...Photographic material 16... Suction cup 18... Sheet body pressing means 20...Air blowing means 22...Driving means 30a, 30b--Holder 32...Rod 50...Rod member 52...Detection means 54...Detection rod 58... Optical sensor 62... Nozzle 70...Guide roller 74...transport mechanism

Claims (3)

[Claims] (1) A suction cup that sucks up and suction-holds the top layer of the stacked sheet bodies in close proximity to the top layer of the sheet body; and a sheet that is placed in a position where it abuts near the end of the sheet body. body pressing means; and a blowing means for supplying air between the sheet body held by the suction cup and another sheet body overlapping with this sheet body to separate the other sheet body. A sheet-body single-fed device featuring: (2) The sheet body single-fed apparatus according to claim 1, wherein the sheet body pressing means includes a rod member that engages with the elastic body and is movable back and forth. (3) The apparatus according to claim 1, further comprising a detection means for detecting whether or not a sheet body is suctioned and held by the suction cup, and the detection means detects whether or not a sheet body is suctioned and held by the suction cup. What is claimed is: 1. A sheet body single-fed device comprising: a detection rod that is movable forward and backward in contact with a body; and a sensor section driven by the detection rod.