JPH0530035Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a sheet film feeding device for correctly aligning and feeding rectangular sheet films used for medical X-ray photography and the like.

(Prior Art) For example, as a feeding device that takes out rectangular sheet films stored in a magazine one by one and sends them to a photographing device or a developing device, for example, Japanese Patent Application Laid-Open No. 1983-
The one described in Publication No. 51526 is publicly known.

This conventional sheet film feeding device includes a suction means for removably suctioning the front upper surface of sheet films stored in a stacked manner in a magazine, a swinging means for moving the suction means up and down and back and forth, and an adsorption means. It was equipped with a feed roll that bit the front edge of the film lifted by the film and sent it forward.

In such a feeding device, when the suction means picks up the film, the position of the film may shift, or when the film is fed into the feed roller, the position of the film may shift, causing the front edge of the film to move in the feeding direction. There was a risk that the paper would be sent at an angle rather than at a right angle.

Therefore, as a sheet film feeding device for conveying the film to a target position in the correct posture, for example, the device described in Japanese Utility Model Publication No. 62-26751 has been proposed.

As shown in FIG. 6, this conventional device guides the sheet film 40 that is sliding down due to its own weight so that its leading edge comes into contact with the surface of a pair of rollers 41 that are vertically different. The pair of rollers 41 is rotated in the feeding direction after a period of time has elapsed during which the tip side of the roller 40 uniformly contacts the one roller 41 and becomes perpendicular to the feeding direction.

(Problems to be Solved by the Invention) In the conventional device shown in FIG. 6, the leading edge of the sheet film 40 can be aligned at right angles to the feeding direction. Similarly, it was difficult to position the sheet film 40 in the left-right direction.

In particular, when the sheet films 40 have various sizes, it is extremely difficult to feed them out while aligning them at a fixed position.

In addition, in the conventional method, since the sheet film is made to be at a right angle due to its own weight as it slides down, there is a lack of certainty that the sheet film will be at a right angle when the weight of the sheet film is light, and feeding errors are likely to occur. It was hot.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a sheet film feeding device that can forcibly align sheet films and achieve reliable feeding.

(Means for solving the problems) In order to solve the above problems, the present invention takes the following measures. That is, the features of the present invention include a conveyor roller that is rotatably driven in the feeding direction and a conveyor roller that is rotatably driven in the feeding direction in order to place the sheet films fed one by one from the sheet film supply means and send them forward. and a pair of upper and lower feed rollers that feed the sheet film being fed, the conveyor roller having an inclined flange for aligning one side edge of the film in a predetermined position, and the feed roller The conveyor roller is provided so as to be able to rotate in reverse so that the film is temporarily stopped by the conveyor roller before the front edge is bitten.

(Function) According to the present invention, the sheet films are fed one by one from the sheet film supply means. The front edge of this sheet film is not perpendicular to the feeding direction, and its position in the left and right direction is also irregular. Such a sheet film is placed on a conveyor roller and sent forward. Then, the front end of the sheet film reaches a pair of upper and lower feed rollers arranged in front of the conveyor roller. At this time, the sheet film is still placed on the conveyor roller. At this time, the feed roller is rotating in the opposite direction, and therefore, the sheet film is obstructed by the feed roller and cannot advance, and is temporarily stopped on the conveyor roller. At this time, the front edge of the sheet film is in contact with the feed roller, which is rotating in reverse, so that it swings due to its rotation. Since the rear part of the sheet film is pressed by the conveyor roller, the entire front edge of the sheet film contacts the feed roller and is perpendicular to the feeding direction.

On the other hand, since the conveyor roller has an inclined flange, one side edge of the sheet film is moved to one side along the inclined flange, and the one side edge is aligned at a predetermined position.

Thus, the sheet film is properly perpendicular to the feeding direction, and one edge thereof is aligned at a predetermined position. Thereafter, the feed roller is switched to normal rotation. The sheet film is bitten between a pair of feed rollers and conveyed forward.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, reference numeral 1 denotes a sheet film supplying means, and a sheet film feeding device 2 of the present invention is connected to the supplying means 1. Both the supply means 1 and the delivery device 2 are provided in a dark room that is shielded from light from the outside.

The supply means 1 includes a magazine 4 with an upward opening that stores rectangular sheet films 3 in a stacked manner, a suction means 5 for suctioning the front upper surface of the sheet films 3 in the magazine 4, and a rotation of the suction means 5. A pair of upper and lower pinch rollers 7 are disposed in front of the suction means 5, and a presser roller 8 is disposed above the magazine 4 behind the suction means 5. There is.

The swing arm 6 is attached to a support shaft 9 on the side of the magazine 4.
A connecting rod 10 is connected to the lower part of the swing arm 6, and the connecting rod 10 is connected to a crank (not shown).

The suction means rotatably supported on the upper part of the swing arm 6 has the same structure as that disclosed in the above-mentioned Japanese Patent Application Laid-open No. 62-51526, so a description thereof will be omitted. 5 has a suction cup 11 at the tip.

A rotation regulating plate 12 is fixed to the suction means 5, and this regulating plate 12 is pulled backward by a spring 13, and the rearward rotation of the regulating plate 12 is controlled by a stopper pin 14 provided on the swing arm 6. 12
This is prevented by contacting the A pin 15 is provided protruding from the lower side of the rotation regulating plate 12.
When this pin 15 moves due to the swing of the swing arm 6, it comes into contact with a guide plate 16 provided on the fixed side so as to be freely rotatable in the vertical direction. This upward rotation of the guide plate 16 is prevented by a stopper member 17. Therefore, when the swing arm 6 rotates downward, the pin 1
5 pushes the guide plate 16 downward, and the pin 15
Circular arc trajectory a → b → c → d → e centered on the support shaft 9
pass through. When the swinging arm rotates from below to above, the pin 15 is restrained by the guide plate 16 and cannot draw an arcuate trajectory, but moves along the lower surface of the guide plate 16, and the pin 15 moves along the lower surface of the guide plate 16. →Draw a trajectory of d→f→b→a.

Therefore, the suction cup 11 of the suction means 5 fixed to the rotation regulating plate 12 also moves along the same trajectory as the pin 15.

That is, the suction cup 11 descends and attracts the sheet film 3, and the front part of the film 3 is lifted upward and rearward. At this time, the upper surface of the midway portion of the film 3 comes into contact with the presser roller 8. Thereafter, the suction cup 11 moves backward, and the film 3 is forcibly bent. Due to this curvature, the film 3 is lifted up.
If another film is in close contact with the lower surface of the film, the film on the lower surface will be flipped off, and one film at a time can be reliably taken out. Thereafter, the suction cup 11 moves forward, and the front edge of the sheet film 3 is bitten by the pinch rollers 7, 7, and is supplied to the feeding device 2.

The feeding device 2 includes an upper guide plate 1 that is curved upward.
8, and a lower guide plate 19 which is disposed below the guide plate and has a forward-sloping shape.

A conveyor roller 20 is placed in the middle of the lower guide plate 19.
is arranged, and a pair of upper and lower feed rollers 21, 21 are arranged in front of it at a position where the lower guide plate 19 and the upper guide plate 18 are close to each other.

The conveyor roller 20 is forcibly driven to rotate forward in the feeding direction. feed roller 2
1 and 21 are capable of forward and reverse rotation.

The conveyor roller 20 has an inclined flange 22 on one side thereof, as shown in FIG.
It is divided into 4. A projection 25 is provided on one side of the small diameter portion 24, and a guide flange 26 is provided at the end of the small diameter portion 24.

To explain the operation of the embodiment of the present invention,
When the sheet film 3 fed from the sheet supplying means 1 is large (long), the sheet film 3 is fed along the upper guide plate 18, and its front edge is bitten by the feed roller 21, so that the front side is photographed. device or developing device. In the case of such a large sheet film 3, the sheet film 3 is correctly positioned in the magazine 4 in the supply means 1, and even when taken out by the supply means 1, the sheet film 3 is taken out without shifting its position. The front edge of the sheet film 3 is perpendicular to the feeding direction, and one side edge thereof is in a fixed position.

However, if the sheet film 3 stored in the magazine 4 of the supply means 1 is smaller in size than the magazine 4, the sheet film 3 may be stored in the magazine 4 with a misaligned position. In addition, when the sheet film 3 is sucked by the suction means 5 and when it is bitten by the pinch roller 7, the position of the sheet film 3 is shifted, and the front edge of the sheet film 3 is not perpendicular to the feeding direction, and one side edge of the sheet film 3 is shifted from the predetermined position. There are many cases. When such a small sheet film 3 is fed by the pinch roller 7, it initially moves along the upper guide plate 18, but when the rear edge of the sheet film 3 leaves the pinch roller 7, the sheet film 3 moves along the lower guide plate 18. It falls onto the plate 19, is placed on the conveyor roller 20, and is sent forward.
At this time, the front feed rollers 21, 21 are rotating in the opposite direction and do not bite the sheet film 3. Therefore, the front edge of the sheet film 3 comes into contact with the feed rollers 21, 21, preventing its forward movement and stopping on the conveyor roller 20. However, since the sheet film 3 is pushed forward by the conveyor roller 20, even if the front edge of the sheet film 3 is not perpendicular to the feeding direction, the front edge of the sheet film 3 is in full contact with the feed roller 21, and is forced to be at right angles to.

In addition, the position of the sheet film 3 in the width direction is shifted, and one side edge of the sheet film 3 is a as shown in FIG.
-b, one side edge of the sheet film 3 is pushed by the rotating inclined flange 22 and forcibly moved to position b, and positioning in the width direction is performed.

When positioning in the width direction, the sheet film 3
The front edge of the conveyor roller 2 vibrates in contact with the feed roller 21 which is rotating in the opposite direction.
Since it is vibrated by the protrusion 25 of 0,
The sheet film 3 can be easily moved in the width direction.

Thus, the front edge of the sheet film 3 is perpendicular to the feeding direction, and one side edge of the sheet film 3 is located at position b, and then the feed roller 21
By switching to normal rotation, the sheet film 3 is correctly positioned and sent to the photographing device or developing device in front.

FIG. 3 shows another embodiment of the conveyor roller 20, which is provided with two stages of inclined flanges 22a and 22b, which enables positioning of two types of sheet films 3a and 3b. Also,
This conveyor roller 20 is formed in a tapered shape, so that when processing a large sheet film 3a, the edge portion of the small diameter inclined flange 22b does not damage the lower surface of the sheet film 3a. Further, the small diameter inclined flange 22b is provided with a surface trim 27 to prevent the film 3a from being damaged.

The one shown in FIG. 4 positions the sheet film 3 at the center, and the conveyor roller 2
Inclined flanges 22, 22 are provided at both ends of the 0.

In the case shown in FIG. 5, an inclined flange 22 is provided perpendicularly to the axis, and the flange surface thereof is inclined in a tapered shape. Even with such an inclined flange 22, the film 3 can be positioned in the width direction. However, if the flange is inclined with respect to the axis as shown in FIGS. 2 to 4, the width adjustment margin can be increased.

Note that the present invention is not limited to the above embodiments.

(Effects of the invention) According to the invention, by rotating the feed roller in the opposite direction, the movement of the sheet film on the conveyor roller is temporarily stopped, and the conveyor roller pushes the sheet film forward, so that the front edge of the sheet film is completely covered. comes into contact with the feed roller, and the front edge of the sheet film can be reliably and quickly made perpendicular to the feeding direction.

Moreover, since the conveyor roller is provided with an inclined flange, one side edge of the sheet film is positioned at a predetermined position by this inclined flange, and the sheet film can be sent out in the correct posture, which is very useful in practical use. This is effective.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a front view showing details of the conveyor roller, Figs. 3 to 5 are front views showing other embodiments of the conveyor roller, and Fig. 6 is a front view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Supply means, 2... Sheet film sending device, 20... Conveyor roller, 21... Feed roller, 22... Inclined flange.

Claims (1)

[Scope of utility model registration request] In order to place the sheet films fed one by one from the sheet film supply means and send them forward,
It has a conveyor roller that is rotationally driven in the feeding direction, and a pair of upper and lower feed rollers that are disposed in front of the conveyor roller and feed the sheet film being fed.The conveyor roller holds one side edge of the film at a predetermined position. A sheet film feeding device having an inclined flange for aligning the sheet film, and the feed roller is provided so as to be able to rotate in a reverse direction so as to temporarily stop the film on a conveyor roller before biting the front edge of the film. .