JPS60205441A - Film returning mechanism - Google Patents

Abstract

PURPOSE:To obtain a film returning mechanism which can return surely a film into a magazine and obviates deformation of the film by providing a means for lifting the film prior to attraction of the film by a means for attracting and moving the film. CONSTITUTION:A motor 54 is run to rotate clockwise a locking arm 36 after waiting for turning on of both of a push button switch 50 and a limit switch 44 in the case of removing a magazine 10 from a film taking-out device 20. The motor 54 is then turned off to stop the arm 36 and the end of a film 12 on the roller side is lifted after waiting for turning on of a limit switch 42. A device for attracting and moving the film is controlled to evacuate the air in a suction cup 18 to a negative pressure so that the film 12 is attracted by the cup 18. The plane of the film 12 and the base of the cup 18 are made approximately parallel in this state as the arm 36 lifts the film. The film is thus surely attracted without making the negative pressure of the air to an excessive value and the deformation of the film is thereby obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a film return mechanism for returning an X-ray film taken out from a magazine into the magazine.

[Background technology]

Automatic loading of unused X-ray films into a cassette is generally carried out by picking up unused films one by one from a magazine with a suction cup and loading the films into the cassette.

Here, as shown in FIG. 1, the suction cup 1 is
The film 12 taken out using rollers 14 and 16
The film 2 is held between the rollers 214 and 16 until preparations for loading a cassette (not shown) are completed, and after this preparation is completed, the rows 214 and 16 are rotated to convey the film 2 to the cassette. This reduces the time required for automatic equipment operation.

However, when the magazine 10 is pulled out and a new film is to be loaded, the film 12 held by the rollers 4.16 must be returned into the magazine 10. In this case, if the film cannot be returned completely into the magazine 10 simply by reversing the rows 214 and 16, when the magazine 10 is pulled out, the portion of the film that has not been completely returned to the magazine may be exposed. This may cause the product to become unusable. Also, due to the negative pressure of air, the suction cup 18
It is also possible to return the film 12 by suctioning it, but since the bottom surface of the suction cup 18 and the surface of the film 12 are not parallel, it may not be possible to suction it, or excessive stress will be applied to the film by using thick fLgLlE gold. The film may become deformed.

[Purpose of the invention]

The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain a film return mechanism that can reliably return a film into a magazine and that does not deform the film. [Structure of the Invention] Film return according to the present invention The mechanism includes a film lifting means for lifting the film before the film is attracted by the film attraction and moving means.

Therefore, the surface of the film can be made substantially parallel to the bottom surface of the suction cup, and the negative pressure of the air allows the suction cup to reliably suck the film and return it into the magazine.

[Embodiments of the invention]

An embodiment of the film return mechanism according to the present invention will be described according to the drawings.

FIG. 2 shows a film take-out device 20 equipped with a film return mechanism. This film take-out device 20
A box-shaped magazine 10 is inserted into an opening (not shown). There is an unused X-ray film 1 in the magazine 10.
2 are stacked and loaded. An opening 22 is provided on the top surface of the magazine, and this opening is connected to a lid 24.
It is opened and closed by sliding it in the direction indicated by the arrow in Figure 2.

A film suction and movement device 26 is disposed near the opening 22 . This film adsorption and movement device 26
8, a rotary arm 30 is pivotally supported by a bin 32, a telescopic arm 34 is provided on the rotary arm 30, and a telescopic arm 34 is provided on the rotary arm 30.
A suction cup 18 is fitted to the tip of the 0. therefore,
The suction cup 18 is rotatable around the bottle 32, and
It is movable in the radial direction. Telescopic arm 34
A pair of rollers 14 and 16 are located near the tip of the magazine 10, in which a pipe (not shown) is disposed for drawing out the air in the suction cup to create a negative pressure.
are arranged in parallel, and the film is sandwiched between the rollers 4 and 16 to transport the film to a cassette (not shown).

Also, near the tip of the magazine 10, an a-took arm 36 is provided.
is provided. This lock arm 36 is fixed to a shaft 38 at one end thereof.
8 is adapted to be rotated by a motor (not shown). The other end of the lock arm 38 is hook-shaped.

Rotate the lock arm 38 around the shaft 38 in the counterclockwise position 1i1 in Figure 2 (the position shown by the two-dot chain line in Figure 2).
When rotated to this point, the inner surface of the side wall of the tip end of the magazine lO is pressed, thereby preventing the magazine lO from becoming one heap.

Also, hold this lock arm 38 clockwise (#t
When the roller 1 is rotated to the position shown by the solid line in Figure 2,
The X-ray film 12 held between 4 and 16 is lifted near the holding part.

The locking and lifting positions of the locking arm 38 are detected by limit switches 40, 42.

Further, the insertion position of the magazine 10 is detected by a limit switch 44.

Next, FIG. 3 shows the connection of input/output equipment to the control circuit 46. The control circuit 46 is configured such that signals from the above-mentioned limit switches 40, 42, 44, pressure switch 48, and push button switch 50 are input manually. This pressure switch 48 is activated by the drop in air pressure that occurs when the suction cup 18 attracts the film 12. Further, the push button switch 50 is a switch that is pressed by the operator to remove the magazine.

From the control circuit 46, a motor 52 for rotating the roller 16,
A driving current is output to a motor 54 for rotating the lock arm 36, a film suction moving device 56, and a display rung 58. This display signal 58 is for notifying the completion of magazine ejection preparation.Next, the control flow of the control circuit 46 will be explained together with the operation of the first embodiment configured as described above.

When the magazine IO is inserted as shown in FIG. 2, the limit switch 44 is turned on, and the cover 24 is opened, the lock arm 36 is rotated counterclockwise in FIG. thwarted. Next, the film suction and movement device [26 is controlled to take out the film 12 from the magazine IO and sandwich it between the rollers 14 and 16. That is, the film 12 is sucked by the suction cup 1B, and the telescopic arm 34
is moved toward the pin 32 side, and the rotary arm 30 is rotated clockwise in FIG. 2 to fan the fill. This tilt K
As a result, the polymerized film is peeled off, and only one film can be taken out.

Next, the rotary arm 30 is rotated counterclockwise to sandwich the leading end of the film 12 between the rollers 14 and 16.

Next, the negative pressure inside the suction cup 18 is released, the telescoping arm 34 is moved toward the bin 32, the suction cup 18 is separated from the film 12, and the rotary arm 30 is rotated clockwise in FIG. 2 to the vertical position to move the next film. This is the suction preparation state, that is, the initial position.

When the lid of a cassette (not shown) is opened and preparations for film loading are completed, the roller 16 is rotated by the motor and the film 12 is conveyed to the cassette side. Next, the film suction and movement device 26 is controlled, and the above process is repeated. 1. The control flow when the magazine 10 is removed from the film ejecting device 20 will be described with reference to FIG. 4. 1. The push button switch 50 and After waiting until all limit switches 44 are turned on (step 100), the motor 54
, and the lock arm 36 is rotated clockwise in FIG. 2 (step 102). Wait until the limit switch 42 is turned on (step 104), turn off the motor 54, and stop the lock arm 36 (step 10).
6). As a result, the roller side end of the film 12 is lifted. Next, the film suction and movement device is controlled, and the air in the suction cup 18 is made negative pressure, and the suction cup 18 moves the film 1.
2 is adsorbed (step 108). At this time, by lifting the film with the lock arm 36, substantially parallel pressure can be applied to the surface of the film 12 and the bottom surface of the suction cup 18, and the film can be suctioned without increasing the negative pressure of the air to an excessive value r. Therefore, the film is not deformed.

Moreover, the film 12 can be reliably attracted. When the pressure switch 48 is turned on, that is, when the negative pressure of the air increases due to the suction t (step 110), the motor 52 is reversed (a one-way clutch (not shown) is provided in the row 216). Although the VCj crawler 16 idles, the frictional resistance when pulling out the film 12 from the roller is reduced).

At the same time, the film suction and movement device 26 is controlled to move the film into the magazine, release the negative air pressure, and move the film suction and movement device i& to the initial position (suaporop 112). Next, a lamp is displayed to indicate that the preparation for removing the magazine 1° is completed (step 114).

Seeing this display, the operator closes the lid 24 and then removes the magazine 0 from the film ejecting device 20.

Next, a second embodiment of the present invention will be described according to FIG.

In this second embodiment, an air blowing nozzle 70 is provided instead of using the lock arm 36 shown in FIG. It seems to be blowing out to the bottom of the. This trap lifts up the film 12 near the roller clamping portion, making it possible to make the bottom surface of the suction cup 18 and the surface of the film 12 substantially parallel.

〔Effect of the invention〕

The film returning mechanism according to the present invention has a film lifting means for lifting the film before suctioning the film, so that the surface of the film and the bottom surface of the suction cup can be made approximately parallel, and the negative pressure of the air can be reduced. It has the excellent effect of being able to reliably adsorb the film without making it excessively large, and (a) preventing the film from being deformed by the negative pressure of the air.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a conventional example, Fig. 2 is a front view showing a first embodiment of the film return mechanism according to the present invention, and Fig. 3 is a connection diagram showing the connection of the people handling device to the control circuit. , FIG. 4 is a flowchart showing a control flow, and FIG. 5 is a front view showing a second embodiment of the present invention. 10...Makajin 12...Film】8...IJ&
m 36-=Lock arm 70... Air blowing nozzle representative Patent attorney Atsushi Nakajima Figure 1 Figure 2 Figure 3 Figure 6

Claims (2)

[Claims] (1) A film lifting means that lifts the film whose one end is held between the rollers near the pinching part, and a film suction device that sucks the film with a suction cup using negative air pressure after the lifting and moves it into the magazine. A film return mechanism comprising means. (2) It has a film holder and means including a lock arm disposed near the roller holding part of the film and an actuator for moving the lock arm, and the tip of the lock arm is located on the film lifting side and on the magazine extraction side. The film closing mechanism 3° according to claim 1, wherein the film closing mechanism 3 is moved toward the inner wall side of the magazine to prevent the film from coming off.