JPS5814347Y2 - Cassette removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing cassettes of the type containing X-ray film.

A type of cassette commonly used to hold large sheets of X-ray film for recording X-ray busts, etc., consisting of a pair of wall plates that are pivotally connected at one end and lockable at the other end. There is a cassette consisting of a pair of wall plates holding the film sheet between them.

This type of cassette is suitable for use in daylight conditions, such as transporting film to a chest radiograph for exposure or transporting exposed film to processing equipment. This makes it possible to handle undeveloped film sheets.

Although the use of cassettes makes it easier to transport undeveloped film, it is usually necessary to carry the cassette containing the exposed film into the darkroom before removing the exposed film or placing it in the processor. be.

It would be possible to devise a complex removal mechanism for opening the cassette and transferring the film to the processing equipment while the operator is in broad daylight.

However, the film remover (un-1oade)
In order for r) to be widely accepted, it is necessary to be relatively simple, to keep the cost as low as possible and to maximize the reliability of the device.

It would also be desirable to be able to accommodate a plurality of different sized cassettes without substantially increasing the size or complexity of the device.

According to one embodiment of the present invention, a removal device for an X-ray film holding cassette utilizes a relatively simple and reliable mechanism for opening the cassette and allowing the film to fall into a processing device. is provided.

The removal device includes a light having guide buttons for slidingly receiving the cassette and a release pin at the end of the space between these guides for engaging a corresponding latch on the cassette to release the cassette. It has a housing that does not pass through.

The guides are inclined at an angle to the vertical,
When the cassette is released, it is opened wide to allow the film to drop out.

The housing includes an upper opening button for receiving the cassette and a cover that can be pivoted over the opening.

A spring biased retaining member holds the cassette slightly above the pin to prevent the cassette from opening while the cover is open.

When the cover is closed, the cover pushes the cassette down into engagement with the pins so that the cassette opens only when the housing is substantially closed from ambient light.

A plurality of guides are provided to receive cassettes of different sizes.

At the ends of the different guides, pins are placed so that when the bottom of the cassette is close to the pin, the upper edge of the cassette is slightly above the level of the cover, and when the cover is closed or The held cassette is pushed down and released.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 shows a cassette loading/unloading device 10 which is closed and capable of receiving a cassette 12 containing sheets of exposed X-ray film.
is exemplified.

This removal device opens the cassette while holding the cassette at an angle to the vertical without exposing the film to light, even in broad daylight, and allows the film inside to be dropped. The film can then be passed through processing equipment 14.

The removal device 10 includes a light-tight housing 16, the bottom of which rests on the processing device 14, and the top of the housing 16 has an opening 120 for receiving a cassette.

After the cassette is received, the cover 22 can be closed to make the housing light-tight.

A set of guide assemblies 24, 26 and 28 are provided for receiving cassettes of different sizes.

The illustrated cassette 12 is adapted to be received between a pair of guides 30, 30 of the guide assembly 2B.

The cassette 12 is a pair of wall plates 3 pivotally joined at one end 34.
It has 1 trigram and 32 trigrams.

These wall plates 31j, - and 32 are adapted to be locked to each other at their other ends 36.

As shown in more detail in FIG. 2, the base wall plate 31 includes a peripheral lip 38 surrounding the gravity one bar wall plate 32 against which the cassette is closed.

The cover-wall plate 32 is spring biased such that the end 42 protrudes from the cover wall plate 32 through a corresponding hole 44 in the peripheral lip of the base wall plate when the cassette is closed. It is equipped with a set of 1 latte 40.

However, the latte 40 is retracted to retract its end 42 to open and close the cassette.

The ejector 10 is intercepted to automatically operate their latches to open the cassette after the cassette is inserted into the ejector.

When the cassette 12 is inserted between the guides 30, 30 as shown in FIGS.
It descends until it abuts a spring-loaded retainer 46 on the bar 48 at the lower end of the space between 0 and 30.

When a downward force is applied to the cassette, the spring 50
The retainer 46 is depressed against the force of , causing the cassette to approach and engage a set of release members or bins 50 .

The release bottle 52 is positioned to fit into the cassette hole 44 (see FIG. 2) and press against the cassette latch end 42.

Thus, when the cassette is pushed down, the bin 52 retracts the latch and releases the wall plate 32.

A set of leaf springs 54 is disposed within the cassette to first push the wall release apart so that the cassette begins to open.

A leaf spring 54 is behind the lower edge of the film to push it out when the cassette is opened.

As shown in FIG. 4, the guide 30 is inclined at an angle A with respect to the vertical.

As a result, when the cassette latch is released and the cassette cover wall 32 is slightly opened, gravity causes the cover wall 32 to open further.

With the cassette sufficiently engaged and tilted so that the film 56 partially faces downwardly, the film 56 (the lower edge of which is pushed out by the cassette leaf) exits the cassette and enters the passageway 58. It may fall into the processing equipment located below.

The cassette must be inserted with the cover wall plate 32 facing down.

As shown in FIGS. 5 and 6, the guide 30 is
A shallow groove 30. have.

Therefore, the cover wall plate 32 can open freely when released.

When the cassette is removed from the removal device - Opening 2 at the top of the wasging
When first inserted through the opening 20, the cassette is exposed to light incident through the aperture 20.

It is important that when the cassette is released and opened, the cover 22 is sufficiently closed to prevent light from passing through.

Preferably, the cassette then opens automatically.

To do this, the cover 22 is inserted into the cassettes 3 and 4 in order to open the cassette immediately after it has been pushed down and moved into a sufficiently closed position to prevent light from passing through.
Used as shown.

As mentioned above, the inserted cassette is initially placed in the retainer 4.
It's on 6.

When the cassette is in the holder 46 as shown in FIG. 3, its upper end 34 projects into the travel path of the cover 22.

With the cover 22 lightly resting on the upper end of the cassette,
Although the cover 22 is sufficiently closed to prevent light from entering the removal device, the opening 20 is also not completely closed.

The operator can completely close the opening 20 by applying downward force to the cover, and at this time, the retaining member 60 of the cover...
to keep the cover fully closed.

When the cover is being fully closed, its cover 22 pushes the cassette 12 down against the biasing force of the retainer 46 so that the cassette latte engages the beef 52 at the bottom of the space between the guides 30. It will be done like this.

At this time, the bin 52 pushes down on the latch end of the cassette, opening the cassette and releasing the x-ray film.

As mentioned above, the removal device includes, in addition to the guide assembly 28 with the guide 30, two guide assemblies 24, 26 (see FIG. 1) for making it possible to remove cassettes of two other different sizes. ).

The size of these two cassettes is similar to that of the cassette 12 in terms of length and width.

Accordingly, one set of guides 64 . for each of these guide assemblies 24 and 26 . The spacing between the buttons 1, 66 and 66 is narrower, and the lower bar 68 and 7o are located higher than the lower bar 48 which holds the retainer 46 button and the pin 52.

The lower bars 68 and 70 also have corresponding pins and pins at each level that ensure that their upper ends are within the path of travel of the cover 22 when cassettes of corresponding size are inserted and rest on the spring-biased retainer. Holds the retainer.

Therefore, by completely closing the cover, the cassette can be pushed down and any of the three sizes of cassettes inserted therein can be opened.

The passageway 58 is wide enough to receive a film that is dropped from any of the three guide assemblies.

Also provided are channel side plates 72 which engage the side edges of the film as it passes through the channel 58 and are designated by the reference numeral 14a designed to receive small sheets of film from a small cassette. The processing apparatus as shown is provided with a side plate 74 with blades for accurately guiding these small sheets of film to the corresponding processing apparatus.

Use the release pin or release member 52 in place and -
・It would be a simple mechanism if the pins were pushed into the cassette using the waging force bar 22.
Other configurations other than this are also possible.

For example, by moving and buttoning their release pins...by a mechanism controlled from outside the wasging or by a mechanism actuated after the cover is fully closed on the wasging, they are held against the cassette. The release pin may be moved.

As previously mentioned, the channel side plates 72 (see FIG. 1) engage the side edges of the film falling toward the channel 58.

These side plates 72 prevent large films from being unloaded from large cassettes in guide assembly 28 from flipping over.

A pair of edge guides 80, 82 are provided to prevent the film emerging from the smaller cassettes from flipping over.

- the pair of edge guides 82 are pivotally mounted on the outside of the grooved guide 64 of the guide assembly 26;

These edge guides guide the edge of the film emerging from the cassette in guide 64.

In order for the edge guide 82 to be able to effectively guide the film, the edge guide 82 must extend across the space between the cassette guides 30, 300, as shown in FIG.

When free, the edge guide 82 pivots under the force of gravity to the position shown.

As shown in FIG.
When the receiver is inserted between 30 and 30, this large cassette 1
2 is a moving path of the cassette and a moving path of the film 56 falling from the cassette;
Deflect 2.

Similarly, the edge guide 80 (see FIG. 1) adjacent to the smallest guide assembly 24 is deflected by a medium sized cassette in guide assembly 26 and by a large cassette in guide assembly 30. Partially deflected.

Edge guide 80 has a slot 86 to prevent engagement with bar 68 of guide assembly 26.

Thus, the present invention provides a relatively simple device for removing sheets of X-ray film from a cassette by an operator in broad daylight.

using a light-tight housing and providing guide means for receiving the cassette within the housing;
Such a device is obtained by disposing a pin or release member in the wading for engaging and releasing the latches of the cassette when the cassette is inserted into the housing.

A cover is used to keep light out through the housing and to force the cassette against the release pin.

This cover is closed to a fully closed position that prevents the housing from passing light when the cassette is pushed against the release pin, allowing the cassette to open in the dark.

The biased retainer prevents the cassette from fully engaging the pin until pushed down by the cover.

The guide maintains the cassette at an angle,
When the cassette is released and opened, the film can fall therefrom into a passageway leading to a processing device.

A series of closely spaced guides can be used to allow the compact removal device to hold a plurality of different sized cassettes.

These guides are positioned such that each correspondingly sized cassette is pressed against each corresponding release pin by the cover being closed to the fully closed position.

A film edge guide is provided to guide the film through a space that can accommodate larger cassettes.

These edge guides can be deflected out of the travel path by larger cassettes.

The gist of the present invention is summarized as follows.

■) having a set of wall plates pivotally joined at one end and held together by at least one latch at the other end, the latch being depressed to pivot open the wall plates; A removal device for an X-ray film holding cassette comprises a light-tight housing, means for receiving said cassette within said housing, and said latches of said cassette held by said receiving means. a release member arranged to engage and pivot open the wall plate to release the film therein.

2) The housing has a cover, and the receiving means includes:
The cassette is slidably retained toward or away from the release member, and the cover button and release member are configured to hold the cassette completely in place when the release member first engages the cassette. 2. The removal device of claim 1, wherein the cassette latch is not closed but is positioned against the pivoted end of the cassette so that the cover presses the cassette latch against the release member when the cover approaches a fully closed position. .

3) The receiving means is substantially spaced apart from a first set of guides forming a first set of spacing grooves for slidably holding the cassette by a distance smaller than the spacing between the first grooves. a second set of grooves extending parallel to said first set of grooves and forming a second set of grooves holding small cassettes having similar latches, although shorter and narrower than the cassettes that fit between said first set of grooves; a set of guides, and the release member is located at an end of the space between the first set of guides and the release member is located at an end of the space between the second set of guides. a second release member is provided at a distance from said second release member such that said cover presses the latch of the small cassette against said second release member as said cover approaches a fully closed position; Removal device according to paragraph 2.

4) the receiving means comprises a first set of guides forming a first set of spacing grooves for slidingly retaining the cassette, the spacing being smaller than the spacing of the first grooves; a second set of grooves spaced apart a distance and extending substantially parallel thereto to form a second set of grooves for holding small cassettes that are shorter and narrower than the cassettes that fit between said first set of guides; a second receiving means including a set of guides, and a film receiving area below said first and second receiving means for receiving film dropping from a cassette in said first or second guide. and a set of film edge guides on each side of said second guide for guiding film from a cassette to said film receiving area, said edge guides extending from said first guide. 2. The removal device of claim 1, having a temple portion movable between an intervening first position and a second position displaced from the position between the first guides.

5) The receiving means holds only the first wall plate of the wall plates of the cassette, and the second wall plate is below the first wall plate and the second wall plate is
said first wall plate is held at an angle to the vertical so as to pivot open when said wall plate is released.
Removal device as described in Section.

6) having a first wall plate and a second wall plate narrower than the first wall plate, the wall plates being pivotally joined at one end and held together by a set of latches at the other end; When the latch is moved, the wall plates are released and a release device for the X-ray film retaining cassette is pivoted open, with the cassette being spaced apart for receiving the cassette. a set of parallel guides that are inclined relative to the vertical and allow the cassette to be installed with the second wall plate facing downward and retain only the first wall plate and release the second wall plate; and a set of release pin means for engaging the latches of the cassette held by said guides to release the wallboard. Removal 1-device characterized by:

7) said guide slidably retains said cassette, said release pin being substantially fixed in position and buttoned, and further biased to a position in a path of travel of said cassette sliding along said guide; a retainer for retaining the cassette so that the cassette is not in releasable engagement with the release pin; and restraining means for pushing the cassette toward the release pin with a force that overcomes the biasing force of the retainer. Removal device as described in Section.

8) a light-tight wazing surrounding said guide, said housing having a button with an opening for accessing said guide and a cover closing said opening; 8. The removal device according to claim 7, wherein the cover constitutes the suppressing means.

9) a second set of parallel guides spaced apart by a smaller distance than said first set of guides and for receiving narrower cassettes, said second set of parallel guides above said first set of guides and substantially disposed therewith; a second set of parallel guides inclined parallel to said first and second parallel guides; passage means disposed below said first and second parallel guides for receiving film from the cassettes of said guides; a set of edge guides pivotally mounted on each side of said tenth guide for guiding the edges of the film from the cassette in said second guide towards said passage means, typically said tenth guide cassette travel path; In the above-
- a set of edge guides having a portion that is removed from the space between the first parallel guides by a cassette being moved into the wading.

[Brief explanation of the drawing]

FIG. 1 of the accompanying drawings is a perspective view of the removal device button constructed according to the present invention and a cassette that fits into the removal device, with a part of the removal device waging cut away, and FIG. FIG. 3 is a perspective view showing the cassette of FIG. 1 with its lockable end slightly open, and FIG. 3 is a partial sectional view taken along line 3--3 of FIG. The figure shown in Figure 4 is a view similar to Figure 3 showing the cover completely closed and the cassette opened.
5 is a partial sectional view taken along the line 5--5 in FIG. 4, showing the cassette partially inserted into the removal device; FIG. 6 is a sectional view taken along the line 6--6 in FIG. , FIG. 7 is a sectional view taken along line 7-7 in FIG. 5. DESCRIPTION OF SYMBOLS 10... Cassette removal device, 12... Cassette, 14... Processing device, 16... Housing, 20...
...Opening, 22...Cover, 24, 26, 28...
Guide assembly, 3L32...wall plate, 40...latte, 46...retainer, 52...release pin.

Claims (1)

[Claims for Utility Model Registration] ■) comprising a first wall plate 31 and a second wall plate 32 which are pivotally joined at one end 34 and held together by at least one latch 40 at the other end 36; a light-tight housing 16 for the X-ray filter holding cassette 12, into which the latte 40 can be pushed and opened by pivoting the wall plates 31, 32 apart; guiding means 24, 26, 28 for slidingly receiving the first wall 31; said guiding means 24, 26.2;
said latch 4 of the cassette 12 received by 8
0 and thereby releasing the second wall plate 32. The guide means move the cassette 12 vertically. The cassette is held at an acute angle with respect to the release member 5.
2 and a structure for moving the cassette 12 against the bias of the retainer 46 into engagement with the release member 52. A cassette ejecting device characterized by: 2) The structure for moving the cassette 12 relative to the release member 52 is the cover 22 of the housing 16, and the cover 22 and the release member 52 are connected to the release member 5.
When the cover 2 is first engaged with the cassette 12, the other end 36 of the cassette 12 must be brought into contact with the cover 22.
is not fully closed, and the cover 22 is arranged to force the cassette latte 40 into engagement with the release member 52 against the bias of the retainer 46 as the cover 22 approaches a fully closed position. The removal device according to claim 1, which is a utility model. 3) the guide means 28 includes a first set of guides 30 forming a first set of spacing grooves 30r for slidingly holding the cassette 12; cassettes forming a second set of grooves spaced apart by a distance less than the spacing of the cassettes and extending substantially parallel to the first grooves, the receptacle being received between the first set of grooves; a second set of guides 64 holding a second cassette that is short and narrow and has latches 40, said release member 52 being at the end of the space between said first set of guides 30;
A release member 52 is provided at the end of the space between the second set of guides 640 at a distance from the cover 22 so that when the cover 22 approaches the fully closed position, the cover 3. The removal device according to claim 2, wherein the removal device presses the latte 40 of the second cassette against the second release member. 4) A film receiving area 58 of the first and second guide means 28.26 for receiving a film falling out of a cassette placed in the first or second guide 30.64 is provided. a device formed in the lower part and a cassette 1 in the side of the second guide 64;
a set of film edge guides 82 for guiding films from 2 to the film receiving area 58, the edge guides having a first position in which the edge guides are between the first guides 30 and 4. A device according to claim 3, characterized in that the portion has a portion movable between a position between the first guides 30 and a second position away from the first guide.