JPS58118637A - X-ray film feeding device - Google Patents

Abstract

PURPOSE:To feed one kind of X-ray films out of various kinds of films with a simple structure, by installing a part which makes a common motion against all supply magazines and the 2nd part which is selectively stopped by a stopping mechanism to a moving mechanism. CONSTITUTION:Sucking disks 9a and 9b are located in a place separated from magazines 6a and 6b first, and, when, for example, a film 8a is selected, a sucking force is applied upon the sucking disk 9a through a sucking tube 50a connected to the sucking disk 9a at the selected side. Moreover, a solenoid 43 is turned on or off correspondingly to the selected film 8a and the projection of a non-selected film 8b of a swing lever 42 is tied with the hole of a side plate 32b. Simultaneously, an eccentric cam rotates and revolves a working lever 38 to the magazines 6a and 6b side. When slide rails 30a and 30b are inclined around fixed shafts 31a and 31b in an alternative way, the sucking disk 9a or 9b approaches the magazine 6a or 6b and adsorbs a selected film 8.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray film delivery device that takes out and transports X-ray films one by one from a supply magazine.

In recent X-ray imaging equipment, many X-rays are required from the viewpoint of labor saving.
There is a film changer that loads X-ray sheet film into a magazine at one time, transfers the film one by one to the imaging stage, and removes the film from the imaging stage and take after taking an X-ray photograph, and a film changer that loads a large number of X-ray sheet films into a magazine. There are film loading machines that load a magazine at a time, take out the films one by one, and insert them into a single-shot cassette, and others that store a large number of shooting films in a magazine and then take out the films one by one from this magazine. Auto feeders, which take out the film and feed it to an automatic processor, have become popular.

FIG. 1 is an explanatory diagram of the above-mentioned film changer in use, and the film changer 1 is fixed to a pedestal 2. As shown in FIG. The subject 3 is located in front of the film changer 1,
The subject 3 is irradiated with X-rays from an X-ray generator 4 placed behind the subject.

FIG. 2 is a cross-sectional view of a conventional film changer 1.
Near the rear surface 5, two supply magazines 6a and 6b for storing unshot film are vertically installed.
Rectangular openings 7a, 7b suitable for loading and unloading films are provided on the front surface of each magazine 6a, 6b. or,
Films 8a, 8b of first and second sizes having different widths are stored in these magazines 6a, 6b, respectively, and these films 8a, 8b are held by suction cups 9a, 9b.
8b is adapted to be pulled out from openings 7a, 7b of magazines 76a, 6b. The film 8 pulled out by either of the suction cups 9a, 9b when photographing is placed on the guide plate 1o.
and is transported by multiple sets of feed rollers 11, and the front part 1
It is fed between a front intensifying screen 13 and a rear intensifying screen 14 which are vertically arranged in the interior of the screen 2 , and its lower end is supported by a stopper 15 . The front intensifying screen 13 is fixed to a fixed plate having X-ray transparency, and the rear intensifying screen 14 is fixed to a fixed plate that can be moved back and forth. When the film 8 is inserted, the rear intensifying screen 14 moves forward and the film 8 is sandwiched. When the photographing is completed in this state, the rear intensifying screen 14 moves backward, the stopper 15 is pulled, the film 8 is dropped downward by the scraping lever 16°, and the bottom part 19 is moved by the feed roller 17 and the guide plate 18. It is collected into the receive magazine 20 placed horizontally.

FIG. 3 shows a perspective view of the film feeding mechanism of this film changer l, and shows the supply magazines 6a and 6.
A plurality of suction cups 9a, 9b arranged in front of each opening 7a, 7b of b are attached to support plates 21a, 2, respectively.
It is fixed at 1b. Both ends of the support plate 21a have a pair of "
It is fixed to one end of the ``''-shaped lever 22.22', and both ends of the support plate 21b are fitted into elongated holes 23.23' provided at approximately the center of the lever 22.22' so as to be freely movable one step downward. are combined. A shaft 24 is inserted into the other end of the lever 22, 22', and the shaft 24 is moved in the direction of rotation indicated by arrow A and in the vertical direction indicated by arrow B.

A predetermined movement can be applied to the suction cups 9a and 9b through the suction cups 9a and 9b. Furthermore, flexible tubes 25a and 25b are connected to the suction cups 9a and 9b, respectively, and suction force is applied to the suction cups 9a and 9b by a suction pump (not shown).
9b.

In this feeding mechanism, when the film 8a or 8b is selected, the suction force from the suction pump is applied to the suction cup 9 on the side of the selected film 8. As the shaft 24 rotates, the levers 22, 22' approach the magazines 6a, 6b, and the suction cup 9 suctions one film 8. Then lever 22.2
2' moves in a direction away from the magazines 6a, 6b, and at this time the shaft 24 rotates while descending slightly so that the film 8 separates from the front surface of the magazine 6 in the vertical direction.

Subsequently, after the end of the film 8 has been pulled out from the opening 7, the lever 22, 22' is raised and the film 8 is fed to the first feed roller 11.

In the film changer 1 shown in FIG. 2, two types of films 8a and 8b of different sizes are stored in two magazines 6.
It is convenient because you can store the film in the folders a and 6b and select the type of film as needed. In addition, this film changer l has suction cups 9 for two types of films 8a and 8b.
Since a and 9b are moved by the same driving source, the structure is simplified. However, since the suction cups 9a and 9b move at the same time, the suction cup 9 on the non-selected side also comes into contact with the film 6 once every time. If the number of these contacts is small,
Although this has little effect on the film 8, if the suction cup 9 comes into contact with the same film 8 several dozen times in a row, there is a risk that the film 8 will be fogged. To prevent this, when using a large number of films 8 of the same type in succession,
The opening 7 of the magazine 6 on the side not selected must be closed. However, this is not a complicated scale to operate, and even if the suction cup 9 touches the difference between the openings 7 of the magazine 6,
The suction cup 9 is attached to the support plates 21a and 21b so that it can escape sufficiently.
It must have a degree of freedom with respect to the body, and requires a complicated mechanism such as biasing with a spring.

An object of the present invention is to provide an X-ray film delivery device that prevents deterioration of the image quality of the film by interlocking a plurality of types of suction members using the same drive source and preventing the suction member on the side that is not selected from coming into contact with the film. The gist of this is to provide a plurality of supply magazines each storing sheet films, a plurality of suction mechanisms corresponding to each magazine that suction one film at a time, and a plurality of suction mechanisms that absorb sheets of film one by one. A moving mechanism that moves along a path and a stopping mechanism that selectively and temporarily stops at least a portion of the moving mechanism, the moving mechanism making a common movement for all supply magazines. The device is characterized in that it has a first portion and a second portion that is selectively stopped by the stopping mechanism.

Next, the present invention will be explained in detail based on the embodiments shown in FIGS. 4 and 5. FIG. 4 is a perspective view of the embodiment, and FIG. 5 is a side view of main parts as seen from direction C in FIG. 4, and the same reference numerals as in FIG. 3 indicate the same members.

In the feeding device according to the present invention, two slide rails 30a, 30b are arranged on the left side of the two supply magazines 6a, 6b, substantially parallel to the magazines 6a, 6b, and are arranged at the center of the films 8a, 8b. The fixed shafts 31a and 31b provided at almost the same level are the slide rails 3.
The shafts are rotatably passed through side plates 32a, 32b attached to the slide rails 30a, 30b, and the slide rails 30a, 30b can tilt around the fixed shafts 31a, 31b.

The fixed shafts 31a and 31b further include slide rails 30a.
Pressing levers 33a, 33b are rotatably mounted substantially parallel to the slide rails 30a, 30b by springs 34a, 34b.
It is biased in the direction of 0b. Press 8-33a, 33
Shafts 35a and 35b are provided at the lower end of b, respectively.
A connecting rod 36 is rotatably attached between these, and an operating rod 38 is connected between the shaft 35b and the fixed shaft 37. A tension spring 39 constantly acts on the operating rod 38 to pull it toward the magazines 6a and 6b, and a roller 40 is provided in the middle of the rod 38, and an eccentric cam 41 rotated by an electric motor (not shown) is attached to the roller 40. They are designed to touch each other. 42 is a rotary solenoid 43
The solenoid 43 is a rotating shaft attached to the shaft 44 of the solenoid 43, and can be rotated by a certain angle around the axis of the solenoid 43, and projections 45a and 45b are provided at both ends thereof. On the other hand, holes 46a, 46b are bored in side plates 32a, 32b attached to slide rails 30a, 30b, and suction cups 9a, 9b are attached to magazines 6a, 6b.
The protrusions 45a, 45b can engage the holes 46a, 46b, respectively, when the protrusions 45a, 45b are in a position away from the hole 46a, 46b.

Here, when the solenoid 43 is turned on and off, the turning lever 42 turns in either the left or right direction around the solenoid shaft 44, and the protrusion 45a and the hole 46a, or the protrusion 45b and the hole 4
One set of 6b is fitted together, and the other set is separated.

Sliders 49a and 49b are attached to the slide rails 30a and 30b so as to be able to slide vertically, respectively, and suction pipes 50a and 50b are fixed horizontally to these sliders 49a and 49b, respectively, and a plurality of suction cups 9a and 9b are arranged at equal intervals on the suction tubes 50a and 50b, and are directed toward the magazines 6a and 6b. Flexible tubes 51a and 51b are connected to the other ends of the suction tubes 50a and 50b, and are connected to a suction pump. Slider 49
a, 49b (7) On the left side, protruding shafts 52a, 52b are provided, and connecting rods 53a, 53b of different lengths are rotatably attached to the protruding shafts 52a, 52b, respectively. The other ends of the connecting rods 53a and 53b are connected by the same shaft 54 to an operating rod 56 that rotates around a fixed shaft 55. A tension spring 5 is attached to the operating rod 56.
A restoring force is applied to the lower blade of 7, and a roller 5 is applied to the middle part of the lower blade.
Eccentric cam 5 which is attached to 8 and rotated by an electric motor
9 comes into contact with the roller 58.

Next, the operation of this film feeding mechanism will be explained. First, the suction cups 9a, 9b are located at a distance from the magazines 6a, 6b. For example, if the film 8a is selected, a suction force acts on the suction cup 9a through the suction pipe 50a passing through the suction cup 9a on the selected side. Also, the selected film 8a
Accordingly, the lensoid 43 is turned on or off, and the protrusion 45b of the unselected film 8b of the turning lever 42 is engaged with the hole 46b of the side plate 32b. At the same time, the eccentric cam rotates to rotate the operating rod 38 toward the magazines 6a and 6b.

Now, when the actuating rod 38 is moved to the amount of force indicated by the arrow in Fig. 5, the protrusion 4
The slide rail 30a on the side that does not engage with the hole 46 and the connecting rod 36 and the pressing lever 33a is tilted and interlocked, and the suction cup 9a approaches the film 8a, but the slide rail 30a on the side that is not engaged with the film 8a Then, even if the suppression lever 33b is tilted, the protrusion 45b acts as a stopper, and the force is transferred to the spring 34.
b, and the slide rail 30b does not operate.

With such a mechanism, the slide rail 30a or 30b
is alternatively tilted around the fixed shafts 31a, 31b, the suction cup 9a or 9b is tilted around the magazine 6a or 6.
b, and pick up the selected film 8. Next, the eccentric cam 41 moves and the operating rod 38 moves the magazines 6a, 6b.
When the suction cup 9 on the selected side is rotated away from the magazine 6a or 6b, the suction cup 9 on the selected side leaves the magazine 6a or 6b while retaining the film 8. The fixed shafts 31a and 31b are the magazine 6a.

Since the film 8 is located at approximately the same level as the center of the films 8a and 8b in the film 6b, the film 8 is pulled out so as to draw a circle centered on the tip or the center of the film 8. Subsequently, the rotation of the eccentric cam 59 causes the operating rod 56 to rotate upward around the fixed shaft 55, and the connecting rods 53a, 53b
The sliders 39a and 39b rise via the sliders 39a and 39b, pick up the selected film 8, feed it to the first feed roller 11 shown in FIG. 2, and release the suction. After that, the suckers 9a, 9
b, and the swing lever 42 return to their original positions and prepare for the next operation.

In the above embodiment, the case where one of two types of films is selected and sent out is explained, but it is also possible to select one type of film from three or more types of films. .

Furthermore, by selectively tilting the slide rail, it is possible to realize a device with a simple structure without increasing the number of drive sources. Further, the means for selecting the tilting slide rail is not limited to the method of the embodiment, and other mechanisms may be employed. Further, this feeding device can be used not only in a film changer but also in a film loading machine and an auto feeder of a developing machine.

As explained above, according to the X-ray film feeding device according to the present invention, it is possible to select and feed one type of film from a plurality of types of films without increasing the number of drive sources and with a simple structure. Furthermore, since the suction member on the non-selected side does not come into contact with the film, even if films of the same type are continuously fed out, there is no adverse effect on other films that would cause deterioration in image quality. Therefore, there is an advantage that a complicated mechanism for closing the lid of the magazine on the side not selected is unnecessary.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the state in which the film changer is used.
FIG. 2 is a sectional view of a conventional film changer, FIG. 3 is a perspective view of a conventional film delivery mechanism, FIG. 4 is a perspective view showing an embodiment of the X-ray film delivery mechanism according to the present invention, and FIG. 5 is a perspective view of a conventional film delivery mechanism. It is a side view of the main part. Symbol l is film change +, 6a and 6b are supply magazines, 7a and 7b are openings, 8a and 8b are films, 9a and 9b are suction cups, 30a and 30b are slide rails, 31a and 31b are fixed shafts, 33a and 33b 3 is a pressing lever, 34a and 34b are springs, 36 is a connecting rod, 3
8.56 is an operating rod, 41.59 is an eccentric cam, 42 is a turning lever, 43 is a rotary solenoid, 45a, 45b are protrusions, 46a, 46b are holes, 49a, 49b are sliders,
50a and 50b are suction tubes. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] 1. A plurality of supply magazines each storing a sheet film, a plurality of suction mechanisms corresponding to each magazine and sucking films one by one, and a plurality of suction M mechanisms arranged in a predetermined path. a first movement mechanism that moves along the supply magazine; and a stop mechanism that selectively and temporarily stops at least a portion of the movement mechanism; An X-ray film delivery device comprising: a portion and a second portion selectively stopped by the stopping mechanism. 2. The X-ray film delivery device according to claim 1, wherein the stop mechanism comprises a lever having an engaging portion at an end. 3. The xm film feeding device according to claim 2, wherein the lever is operated by a solenoid. 4. The first part has a first lever provided for each suction mechanism, and the second part is a part connected to the first lever by a spring. The X-ray film delivery device according to item 1. 5. The X-ray film delivery device according to claim 4, wherein the second portion includes a retaining portion that engages with the stop mechanism.