JPS6232194Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to prevent sheet films in the unexposed film storage magazine and the storage magazine body from being damaged by excessive force in caseless X-ray imaging equipment without damaging the properties of the sheet films. The present invention relates to a sheet film feeding device that can feed sheet films without damaging a magazine.

In a caseless X-ray imaging device, a large number of unexposed sheet films are stacked and stored in a storage magazine, and during imaging, the sheet films in the storage magazine are sucked up one by one by a suction cup and transported to the imaging unit. .

In this case, the suction cup is lowered by the drive mechanism to the surface of the sheet film stored in the storage magazine, and after checking the suction, it is reversed and raised to take out the sheet film, but the number of sheet films changes or the suction is confirmed. If there is a delay, excessive force is applied to the sheet film and storage magazine main body, resulting in disadvantages such as impairing the properties of the sheet film and damaging the storage magazine main body.

Therefore, this invention was devised to eliminate the above-mentioned drawbacks. Instead of the suction cup being raised and lowered directly by a drive mechanism, the pick-up portion of the suction cup or the like is moved by a drive mechanism that generates a predetermined amount of stroke using a drive source. In addition to engagingly supporting the pick-up part, the pick-up part is always pulled in the direction of the sheet film surface by a predetermined spring force, so that when the drive mechanism is lowered by a predetermined amount, the pick-up part is pulled up to the sheet film surface by the spring force. After the sheet film is sucked, the drive mechanism reverses and rises, and is supported again by the engagement fulcrum, and the pick-up portion rises to a predetermined position against the spring force. To provide a sheet film feeding device in which a pick-up part reaches the sheet film surface and does not apply excessive force. Embodiments of this invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing a sheet film feeding device according to this invention. In the figure, reference numerals 11 and 12 are storage magazines in which a large number of sheet films 13 and 14 are stored. 21, 22 are directly connected to and supported by the support arms 41, 42 with a suction cup, and as shown in FIG. is guide 3
1, 32, the support arms 41, 42 are supported by inserting their bases into the guides 31, 32.
are adapted to slide up and down along guides 31 and 32. Therefore, the support arms 41 and 42 move up and down while maintaining their vertical postures regardless of the tensile forces of springs 81 and 82, which will be described later. Also support arm 4
1, 42 are levers 61, 52 at side supports 51, 52,
62, and the levers 61, 62 also connect their upper ends to the circumferential edges of the gears 71, 72 as fulcrums 91, 9.
2, and the springs 81, 8
2, it is always pulled toward the sheet film surface side. The levers 61, 62 are provided with elongated holes 63, 64 whose thickness exceeds the maximum number of sheets stored in the storage magazine.
Even if the levers 61, 62, which are stopped to rotate freely, are pushed down while swinging, the fulcrums 51, 52 of the support arms 41, 42 escape in their respective elongated holes 63, 64, and are still driven even when the sheet film is fully stored. Source 10
The force from zero does not reach the sheet film surface through the suction cups 21 and 22. Also gear 7
1 and 72 are connected via an idler 110, and the vertical movement of the levers 61 and 62 is driven by one driving source 100.
It can be done with Reference numerals 200 and 201 are rollers for conveying the taken out sheet film to the photographing section.

In the above configuration, when the drive source 100 rotates, the lever 6
1 and 62 are pushed down while swinging from the uppermost position shown by the solid line in FIG. 1, and the lower end positions of the elongated holes 63 and 64 formed therein are lowered. As this descends, the two sets of pick-up parts consisting of the suction cups 21, 22 and the support arms 41, 42 are pulled by the springs 81, 82, respectively, and the guide 3
1, 32 and descend vertically. Figure 3 shows the state in which gear 71 is rotated 90 degrees (gear 72 is
(It is exactly the same when rotated 90 degrees.) After each suction cup 21, 22 reaches the sheet film surface in each storage magazine 11, 12, it does not descend any further, but only the levers 61, 62 descend to a predetermined position. In FIG. 1, the state shown by the two-dot chain line is the suction cups 21, 22 and the lever 61
62 lowest positions. And lever 61,
While the lever 62 is lowered to the lowest position, the suction cup (22 in the figure) on the side designated by a solenoid valve or the like and sucked by a vacuum pump suctions the sheet film, and the drive source 100 is reversed and the length of the levers 61 and 62 is lowered. hole 6
3, 64 is the fulcrum 51 of the support arms 41, 42,
When it reaches 52, it starts to rise again and rises to a predetermined position. By these operations, the sheet film on the selected side is taken out. In addition, in the figure, the state shown by the solid line is the state in which the suction cups 21, 22 and the lever 6
1 and 62, and the state shown by the two-dot chain line is the respective bottom position, and the intermediate position is not shown.

In the above embodiment, an example was shown in which two sets of pick-up parts each consisting of a storage magazine, a suction cup, and its supporting arm were provided, but this invention is not limited to the above embodiment, and similarly to the above, a single drive unit is provided. Not only one set, but also three or four sets of sheet film supply devices can be constructed from one set of sheet film supply devices.

As described above, according to this invention, when taking out the sheet film, the suction cup is not lowered directly by the drive mechanism, but the pick-up part reaches the sheet film surface by a predetermined spring force. To provide a sheet film feeding device capable of taking out a sheet film without applying excessive force to the sheet film and storage magazine as in the conventional case, without impairing the properties of the sheet film, and without damaging the storage magazine body. be able to. Further, since the drive mechanism itself simply repeats a predetermined stroke regardless of the number of remaining sheets of film, it can be simplified in terms of structure and control, and the stability of performance can be improved. Furthermore, with the same configuration as this embodiment for devices with multiple storage magazines, multiple pick-up sections can be driven by one drive source in combination with switching of suction, resulting in smaller devices, simpler control, and stability. It is possible to aim for

The same effect as described above can also be expected in a mechanism in which the suction cup itself escapes via a spring, but according to this invention, the suction cup can be supported reliably, and the spring can be lengthened to improve This has a great advantage in that an appropriate contact pressure between the suction cup and the sheet film can be selected regardless of the number of sheets by hanging the sheet film diagonally.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing an embodiment of the sheet film feeding device according to this invention, Fig. 2 is a sectional view of a part of this device seen from the front, and Fig. 3 explains the operating state of this device. FIG. 21, 22... Suction cup, 41, 42... Support arm, 51, 52... Fulcrum, 61, 62... Lever, 63, 64... Elongated hole, 81, 82... Spring,
100... Drive source.

Claims (1)

[Scope of claims for utility model registration] A large number of stacked sheet films 13,1
In the sheet film feeding device, the sheet film feeder takes out the sheets of film 4 one by one from storage magazines 11 and 12 in which they are stored using suction cups 21 and 22, and feeds the sheets to a film transport position. and the storage magazine 11 on the lowering levers 61 and 62,
Elongated hole 6 whose thickness exceeds the maximum number of films stored in 12
3, 64, engaged with the levers 61, 62 by means of fulcrums 51, 52 that can freely slide in the elongated holes 63, 64, and supported by the guides 31, 32 so as to be vertically movable up and down. The suction cup 21 is attached to the arms 41 and 42,
22 is held, and springs 81 and 82 are installed on the support arms 41 and 42 to urge them downward, and the predetermined elastic force of the springs 81 and 82 causes the support arms 41 and 42 to be held against the sheet films 13 and 14. A sheet film feeding device characterized in that it is constantly pulled in a direction.