JPS5831143Y2 - Film changer for X-ray imaging equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a film exchanger for an X-ray imaging apparatus.

The film exchanger is designed to sequentially convey the unexposed cut films stored in containers to the imaging section of the X-ray imaging device, and send the cut films that have been exposed to X-rays to other containers. .

However, in the film changer installed in an X-ray imaging device in which the imaging unit is moved, such as an omnidirectional fluoroscopic imaging device, the cut film that has been exposed may not fit properly into the container due to the tilting or tilting of the imaging table. , it tends to remain protruding from the film insertion opening.

An object of the present invention is to provide a film exchanger for an X-ray imaging apparatus that can reliably load a cut film into a container.

Next, one embodiment of the film exchanger of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the main body 10 of this film exchanger includes:
It has mounting parts A and B for two film containers 11 and 21, and a connecting part C to the imaging part of the X-ray imaging apparatus in which this film exchanger is installed.

There is a conveying section inside the main body, and this conveying section feeds the unexposed films in the container 11 one by one to the connecting section, and transfers the cut films that have been exposed to X-rays, that is, the already photographed cut films. is carried to the container 21.

Figures 2 and 3 show details of the body and film container.

Films for unphotographed frames 1 are stored in a stack inside a container 11.

This container is engaged with a guide rail 13 in the mounting part of the main body 10.

The container itself is box-shaped and has an opening 12 at the end face attached to the main body 10.

This opening is always closed by a shutter (not shown) provided on the container, and this shutter opens the opening as soon as the container is attached to the main body.

The films laminated inside the container are made to pass one by one through the opening 12 by a vacuum pad 15 disposed inside the container, and are sent out to the conveying section.

That is, the vacuum pad is rotatably attached to pin 1 on lever 16.
By driving the lever by the cam plate 19 and guiding by the guide plate 20 so as to move this pin along the groove in the groove plate 18, the pad 15 guides the leading edge of the film through the opening 12. I'm trying to pass it.

On the other hand, the film that has been exposed to X-rays is also stored in container 21.
It is designed to be stacked and housed.

This container is also box-shaped, but has an opening 22 in the wall parallel to the cut film.

A shutter 23 is provided inside the container to keep this opening closed at all times.

The container is inserted into the body through an opening provided in the body 10 and guided by guide rails 24 in the body.
It is inserted into the main body.

When this container is pushed into a predetermined position, the shutter can be opened manually from outside the container.

The film F exposed to X-rays is transported toward the opening of such a container and is sent out obliquely toward the opening 22.

A roller 25 is arranged to enter the opening 22 of the container, and the fed-out film is further guided by this roller in an oblique direction toward the back of the container.

This roller is held by a lever 26, which is held in the main body by a pin 26a, and a coil spring 27 is provided between the lever and the main body.

This film exchanger further includes a lever 28 located above the film travel path.

This lever is fixed to a shaft 29 rotatably held in the main body 10, such that rotation of the shaft 29 positions the lever above and across the film travel path and within the film container. It has become.

Rotation of the lever 28 is achieved by extending the shaft 29 to the outside of the main body, fixing the lever 30a to this extended end, and linking one end of the lever 30a to the plunger of the electromagnetic solenoid 30b.
This is done by connecting the lever 30a to the other end of the lever 30a and connecting it to the lever 30a by connecting it to the main body.

The electromagnetic solenoid is controlled to be activated every time a cut film is fed into the container 21.

That is, the sensors, which are not shown, are located on the guide plates 32a, 3.
2b, and when the cut film passes this sensor, an electromagnetic solenoid is activated.

Now, the photographed cut film is sent out from the transport section,
When the solenoid is actuated, the lever 28 is rotated clockwise in the figure so that the free end of the lever 28 contacts the film and depresses the vicinity of the rear end of the film, causing the rear end of the film to enter the container 21. Push it in.

Thereafter, the lever 28 is rotated in the opposite direction by the coil spring 30C, and is ready to feed the next film.

In this film exchanger, the above steps are repeated every time the film is sent out, so even if the space inside the container becomes narrow, the film can be reliably loaded into the container without causing it to protrude from the container.

For this reason, films are stacked one after another inside the container, and the space between the topmost film and the container becomes narrow, and the leading edge of the newly fed film comes into contact with the already stacked films, causing the film to stack. It is possible to prevent accidents that would cause the vehicle to stop progressing.

In other words, even if the leading edge of the film causes friction with the already stored film, the push-down lever pushes the end of the film down into the container, bending the film, and the returning force of this bending causes the leading edge of the film to move forward. and the entire film can be contained within the container.

The transport section includes a film path that is approximately horizontally tilted in the shape of a Y.

In this passage, each of the two forked parts of the Y has a container 1.
1 and the container 21, and the remaining portion extends toward the imaging section of the X-ray imaging apparatus or the exit of the main body 10.

To explain more specifically, one of the former two passages is formed by guide plates 31 a and 31 b arranged approximately in parallel, and the other passage is formed by guide plates 32 a and 32 b arranged in the same manner. has been done.

The latter passage is formed by the circumferential surface of the drum 33 that is freely rotatably supported by the main body 10, and a guide plate 34a disposed along the drum circumferential surface. A guide plate 3 placed so as to be connected to a portion further extending from the surface and the peripheral surface of the drum.
4a and a substantially parallel guide plate 34b.

These guide plates are fixed to the main body 10.

One end of the guide plates 31 a and 31 b is connected to the slit of the container 11, and one end of the guide plates 32 a and 32 b is connected to the slit of the container 2.
1, respectively.

Between the ends of these guide plates and the container, there are −
A set of rollers 35a, 35b and rollers 36a, 3
6b are arranged.

Roller 35a and roller 36a have their shafts connected to main body 1.
0 and is forcibly rotated by means on the main body side.

Roller 35b and roller 36b are each connected to lever 3.
7 and lever 38 so as to be rotatable.

Each lever is fastened to the body 10 by a pin 39,41,
Coil springs 42, 43 are disposed between each lever and the body and keep rollers 35a, 36a in tension with roller 3.
5 b and 36 b are pressed against each other.

On the other hand, a set of rollers 44a, 4 is provided near the confluence of each passage.
4b is placed.

The roller 44a is rotatably held by the main body 10, and is forcibly rotated by means on the main body side.

The roller 44b is rotatably held by a lever 46, the lever is supported by the main body by a pin 47, and the roller 44a is supported by a coil spring 48 disposed between the lever and the main body.
is constantly pressed against the roller 44b.

The roller 44a is located approximately midway between the path formed by the guide plates 31a and 31b and the path formed by the guide plates 32a and 32b, and the roller 44b is located in the former path.

Further, a roller 49 is disposed in pressure contact with the drum 33, and its shaft is supported by the main body 10 and is forcibly rotated by means on the main body side.

The drum 33 is supported by a lever 50, and the lever is fastened to the main body by a pin 51. A coil spring 52 is disposed between the lever and the main body, and presses the drum 33 against the roller 49, and also serves as a guide plate. A passage is formed between 34a and 34a.

A pair of rollers 53 a and 53 b are arranged at the exit of the passage formed by the guide plates 34 a and 34 b, that is, at the connection portion with the imaging section of the X-ray imaging apparatus.

The roller 53a is rotatably held by the main body 10 and forced to rotate by means on the main body side, and the roller 53b is held by a lever 55 fixed to the main body 10 with a pin 54.

A coil spring 56 is disposed between the main body 10 and the lever 55, and presses the roller 53b against the roller 53a.

A sensor 57 is provided in this path to stop the rotation of roller 53a if no film is present in this path.

When the unphotographed cut film is sent out from the container 11 as described above, it is sent out to the path formed by the guide plates 31 a and 31 b by rollers 35 a and 35 b, and then to the drum 33 by rollers 44 a and 44 b. It is made to reach the circumferential surface of.

The film is transferred to the drum 33, roller 49, and guide plates 34a, 3.
4b, and is sent to the imaging section of the X-ray imaging apparatus by rollers 53a and 53b.

However, when the end of the film passes the sensor 57, the roller 3
5 a , 36 a , 44 a , and 53 a are stopped, and the film ends with the rollers 53 a ,
53b, and the remaining part is stopped in the imaging section of the X-ray imaging apparatus.

When the X-rays are irradiated and the photographing is completed, the roller 53b is reversed to transport the film toward the drum 33.

The rollers 49 are now being reversed and feed the film towards the intersection of the two paths.

Since the rotational direction of the roller 44a remains the same, it is guided into the path formed by the guide plates 32a and 32b.

At the exit of this path, the film passes over rollers 36 a
, 36b toward the container 21.

The push-down lever 26 is now located above the film, as described above, and guides the film towards the roller 25.

The photographed film is then guided by the rollers 25 and pushed into the container by the push-down lever 28, as described above.

As shown in the embodiments described above, in the film exchanger of the present invention, the push lever is placed in the main body with the film passage formed between the conveying section and the second container in the middle, and facing the second container. By moving the push-down lever, the push-down lever crosses the film path and at the same time pushes the film into the second container, thereby ensuring that the film does not protrude from the container. can be loaded into a container.

[Brief explanation of the drawing]

The drawings show an embodiment of the film exchanger for an X-ray imaging device according to the present invention, and FIG. 1 is a perspective view, and FIG.
3 is an enlarged view of a portion of FIG. 2. 10...Main body, 11...First container, 2
1...Second container, 28...Press lever, 30a-30C...Means for moving the push lever, 31-57...Transport unit.

Claims (1)

[Scope of utility model registration request] A first container that stores an unexposed cut film, a second container that stores an already photographed cut film, a mounting portion of these containers, a connecting portion to the imaging portion of the X-ray imaging device, and a cut film of the first container. and a conveying part for conveying the film to the connecting part and sending it out from the connecting part to the second container, and the conveying part is disposed facing the second container with the film path formed by the feeding in the middle. and a push lever movable between a first position across the film path and a second position retracted from the film path, and means for moving the push lever to the first position each time the cut film is fed out. A film exchanger for an X-ray imaging device, which is characterized by the following.