JPH0389237A - Film loading device - Google Patents

Abstract

PURPOSE:To eliminate the need for a driving source exclusive for shutter driving by energizing a shutter with a shutter driving means provided on an opening/ closing means and communicating a magazine-side chamber with a cassette-side chamber. CONSTITUTION:The opening/closing member 78 which opens/closes a cassette 22 by rocking its cassette main body 22a is provided with a projection part 85 as the shutter driving means. therefore, the opening/closing member 78 is only rocked while driven by a rotary driving source 62 to engage the projection part 85 with the engaging part 54 of the shutter 48, thereby communicating the opening part 52 of the shutter 48 with a film insertion slot 46. when the opening/closing member 78 is rocked to the side of a lid body 22b so as to close the cassette 22, on the other hand, the shutter 48 closes the film insertion slot 46 with the elastic force of a spring member 56. Namely, no exclusive driving source such as a linear solenoid need be used to open/close the shutter 48, the constitution is simplified greatly to easily miniaturize the device and the device is manufactured economically.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention has a structure in which a film is conveyed from a magazine to a cassette in a bright room, and a drive means for a light-shielding shutter is integrally provided with the opening/closing means for the cassette. The present invention relates to a film loading device.

[Prior Art] For example, when photographing a radiation image of a subject such as a human body on film, a cassette is used, and in recent years, the work of loading film into the cassette has been performed in a bright room.

That is, a supply magazine containing a plurality of unexposed films in a light-shielded state is attached to the film loading device.

Next, when a cassette is inserted into the film loading device, only one unexposed film in the supply magazine is taken out by a sheet feeding mechanism including a suction cup and loaded into the cassette. The cassette loaded with unexposed film is taken out from the film loading device and subjected to a predetermined radiographic work.

In this case, in order to prevent the unexposed film remaining in the magazine from being exposed to external light when taking out the cassette from the film loading device, there is a chamber in the film loading device on the magazine side on the film transport path. A light-shielding shutter is provided that allows communication with the chamber on the cassette side.

[Problems to be Solved by the Invention] However, in order to drive the shutter, a linear solenoid is generally used, and in particular, if the work of loading film into a cassette is done relatively frequently, the linear solenoid itself becomes very sensitive. The temperature will become high. Therefore, there is a risk that malfunctions may occur due to the temperature rise.
Usually, a thermoswitch or the like is provided to prevent the linear solenoid from becoming unnecessarily high temperature. Therefore, the structure becomes complicated, and the driving of the linear solenoid is frequently interrupted, making it impossible to achieve an efficient film loading operation.

The present invention has been made to solve the above problems, and provides a film loading device that can drive a shutter with a simple configuration and that can easily improve the efficiency of film loading work. The purpose is to provide.

[Means for Achieving the Object] In order to achieve the above object, the present invention provides a film loading device for use in a bright room for transporting a film stored in a magazine into a cassette, which comprises: a light-shielding shutter that can communicate freely between a chamber on the magazine side and a chamber on the cassette side; an opening/closing means for opening and closing the cassette; and a shutter that is integrally displaced with the opening/closing means and engaged with the shutter when the cassette is opened. and shutter driving means for bringing the shutter into an open state.

[Operations] In the film loading device according to the present invention constructed as described above, when a cassette is installed in the device, the opening/closing means is driven to open the cassette. At this time, the opening/closing means is provided with a shutter driving means, and when the opening/closing means is displaced, the shutter driving means engages a light-shielding shutter that blocks the magazine side chamber and the cassette side chamber. and open it. and,
Film is transported from the magazine into the cassette.

[Example] An example will be given regarding the film loading device according to the present invention,
A detailed description will be given below with reference to the accompanying drawings.

In FIG. 2, reference numeral 1O indicates a film loading device according to this embodiment. A magazine mounting section 14 is provided at one end of the upper part of the casing 12 in which the film loading device 10 is mounted, and a cassette mounting section 16 is formed within the casing 12 below the magazine mounting section 14. . In this case, a magazine 18 containing a plurality of stacked unexposed films F is attached to the magazine mounting section 14, while
The cassette 22 is inserted into the cassette mounting part 16 from the opening 20 formed in the housing 12 via a shutter I9 that can be opened and closed.
is placed.

A single sheet feeding mechanism 30 is disposed in the upper part of the housing 12 in close proximity to the magazine 18. The sheet body single-feeding mechanism 30 includes a plurality of suction cups 32 connected to a vacuum suction device (not shown), and the suction cups 32 are moved along a predetermined trajectory to apply a stirring action to the film F.

A guide plate 40a140b is provided below the sheet body single-fed mechanism 30.
and a conveying roller pair 42 are provided. The pair of conveying rollers 42 is close to a partition wall 44 horizontally suspended in the housing 12, and inserts the film F into a film insertion opening 46 formed in the partition wall 44 extending in a direction perpendicular to the drawing. Performs the sending function.

As shown in FIG. 1, a guide member 4 is attached to the lower end side of the partition wall 44.
A shutter 48 is attached via 7a and 47b so as to be movable forward and backward in the direction of the arrow. An opening 52 corresponding to the film insertion slot 46 is defined in the shutter 48, and
A locking portion 54 bent vertically downward is formed at the end,
A spring member 56 engages with this locking portion 54 .

A cassette opening/closing means 60 is provided below the shutter 48. The cassette opening/closing means 60 includes a rotational drive source 62, and one end of a link piece 64 is engaged with the rotational drive shaft of the rotational drive source 62. An arm 6 is attached to the other end of the link piece 64.
6 is engaged, a slide plate 68 is attached to the arm 66 via a rod 70 and a coil spring 72, and an opening/closing member 7 is attached to the end of the slide plate 68.
8 is engaged (see Figure 2). The opening/closing member 78 is swingably supported around a support pin 80 provided at its lower end. A stopper member 82 for holding the cassette 22 is provided at the bottom of the opening/closing member 78, and bendable locking members 84 are provided on both sides of the upper part.
A protruding portion 85 serving as a shutter driving means is integrally formed on the upper portion of the locking member 84 . Furthermore, a suppressing member 87 is provided inside the locking member 84 on the opening/closing member 78 .
is formed.

A set of cassette holding members 86 that are inclined opposite to the opening/closing member 78 are fixedly installed in the cassette mounting portion 16, and a set of suction members connected to a vacuum suction device (not shown) is connected between the cassette holding members 86 and 86. A board 88 is provided.

The cassette 22 installed in the cassette loading section 16 has a cassette main body 22a that accommodates a single film F and a lid 22b that can be opened and closed. The locking member 84 of the opening/closing member 78 can hold the cassette main body 22a in a position avoiding the lid 22b. The cassette 22 also includes a known locking means (not shown) for fixing the lid 22b to the cassette main body 22a.
is provided.

The film loading device according to this embodiment is basically constructed as described above, and its operation will be explained next.

A magazine 18 stacked with a plurality of films F is attached to the magazine loading section 14, while the opening 20 of the housing 12
Then, the unlocked cassette 22 is loaded into the cassette mounting portion 16, and the shutter 19 is closed. In this case, the cassette 22 is supported by the stopper member 82, the lid 22b is engaged with the cassette holding member 86, and the cassette main body 22a is held by the locking member 84.

Next, a shutter (not shown) of the magazine 18 is pulled out, and after the magazine 18 is opened into the housing 12,
The sheet body single feeding mechanism 30 is driven.

Therefore, the suction cup 32 suction-holds the film F, and after a stirring action is applied to the film F, the film F is supplied to the guide plates 40a, 40b and the pair of conveying rollers 42.

In the cassette mounting section 16, the cassette 22 is held open and on standby via a cassette opening/closing means 60. That is, the lid body 22b of the cassette 22 is positioned and held with respect to the cassette holding member 86 under the suction action of the suction cup 88, and on the other hand, the locking member 8 is attached to the main body 22a of the cassette 22.
4 is engaged.

Therefore, the link piece 64 is rotated under the driving action of the rotational drive source 62, and the opening/closing member 78 is moved to the cassette body 22a via the slide plate 68 under the tension action of the arm 66 that engages with the link piece 64.
The cassette main body 22a is oscillated integrally with the lid body 22b, and the cassette main body 22a is opened in a direction away from the lid body 22b.

Here, when the opening/closing member 78 swings about the support pin 80, a protruding portion 85 provided integrally with the locking member 84 engages with the locking portion 54 of the shutter 48 and springs it. It is moved in the direction of the arrow in FIG. 3a against the elastic force of the member 56. When the opening/closing member 78 is stopped at a predetermined angular position, the opening 52 of the shutter 48 reaches a position corresponding to the film insertion opening 46 of the partition wall 44, and the film F is transferred to the cassette main body via the pair of conveying rollers 42. 2
2a and the lid 22b.

Next, the cassette main body 22a is swung toward the lid body 22b via the arm 66 under the driving action of the rotational drive source 62,
Close the cassette 22 (see Figure 3). Arm 6
6 is further swung toward the lid 22b, the opening/closing member 78
A pressing member 87 provided on the cassette main body 22a comes into contact with the cassette main body 22a. Here, a slide plate 68 is engaged with the arm 66 via a rod 70 and a coil spring 72, and the pressing member 87 presses the cassette main body 22a through the elastic force of the coil spring 76 (third See Figure C>.This allows the cassette main body 22a and the lid body 22b to
and are fixed via a locking means (not shown).

Therefore, while the film F is housed in the cassette 22 in a light-shielded state, the shutter 48 moves to the right in FIG. 2 through the elastic force of the spring member 56 and closes the film insertion opening 46. . Therefore, by releasing the suction action of the suction cup 88 and opening the shutter 19, the cassette 22 can be taken out from the cassette mounting portion 16. At this time, the upper side of the housing 12, that is, the room in which the magazine 18 is loaded, is not unnecessarily irradiated with external light.

In addition, cassette 2 loaded with unexposed film F
2 is loaded into a radiographic image capturing apparatus (not shown) and used for capturing a radiographic image of a desired subject.

In this case, according to this embodiment, the protrusion portion 8 serving as a shutter driving means is attached to the opening/closing member 78 that swings the cassette main body 22a of the cassette 22 to open and close the cassette 22.
5 is provided. Therefore, by simply swinging the opening/closing member 78 under the driving action of the rotational drive source 62, the protruding portion 85
can be engaged with the locking portion 54 of the shutter 48 to allow the opening 52 of the shutter 48 to communicate with the film insertion slot 46 .

On the other hand, when the opening/closing member 78 is swung toward the lid 22b to close the cassette 22, the shutter 48 closes the film insertion opening 46 through the elastic force of the spring member 56.

That is, there is no need to use a dedicated drive source such as a linear solenoid to open and close the shutter 48, and the configuration can be simplified, easily miniaturized, and economically manufactured. In particular, unlike when using a linear solenoid, unnecessary temperature increases are not caused, and the film loading operation can be efficiently performed without interruption. .

[Effects of the Invention] The cassette opening/closing mechanism according to the present invention configured as described above has the following effects.

By displacing the opening/closing means to close the cassette, the shutter driving means provided in the opening/closing means can bias the shutter to communicate the chamber on the magazine side and the chamber on the cassette side. Therefore, a dedicated drive source for driving the shutter is not required, the configuration is simplified, and the manufacturing cost of the entire film loading device can be easily reduced.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of the main parts of the film loading device according to the present invention, FIG. 2 is a schematic configuration diagram of the film loading device, and FIG. 3 is an explanation of the operation of the main parts of the film loading device shown in FIG. It is a diagram.

Claims (2)

[Claims] (1) A film loading device for use in a bright room for transporting film stored in a magazine into a cassette, comprising a light-shielding shutter that allows free communication between a chamber on the magazine side and a chamber on the cassette side on the film transport path. an opening/closing means for opening and closing the cassette; and a shutter driving means for displacing integrally with the opening/closing means and engaging the shutter to open the shutter when the cassette is opened. Characteristic film loading device. (2) In the device according to claim 1, an elastic member is engaged with the shutter, and by displacing the opening/closing means so as to close the cassette, the shutter driving means is separated from the shutter and the elastic member is caused to spring. A film loading device characterized in that the shutter is configured to be closed at the bottom.