JPS58160945A - Film remover for film exchanger of x-ray device for medical purpose - Google Patents

Abstract

PURPOSE:To make construction simple, by providing two cam plates disposed coaxially with cam means, followers combined with the respective cam plates and means for transmitting the movement of the respective followers to arms. CONSTITUTION:A film remover has arms 21, 22 which supports a vacuum pad 3, an arm 23 which supports these arms turnably, and parallel link mechanism 25, 26, 28 which support the linearly movable arms 22, 23. The pad 3 is so constituted that the pad separates and sucks just one sheet film and ascends on rotating of the arms 21, 22 by a cam plate 30 from the state in which the pad is held in tight contact with the sheet film F and delivers the sheet film while sucking the same on moving of the arm 23 by a cam plate 31.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film holder device for a film exchanger in a medical XIIM machine.

In medical X@ devices, so-called cassette-less devices are widely used in which bare sheets of film are automatically fed one after another to the imaging position. A film changer for this purpose generally has a supply magazine that stores unshot film, a storage magazine that stores shot film, and a film holder that moves back and forth between the shooting position and a standby position distant from the shooting position. and a film transport mechanism located between the standby position and both magazines.
The unexploited film is sent to the film holder by the transport mechanism, the film holder moves the film to the photographing position, exposes it to X@, and then returns it to the standby position, and the transport mechanism transfers the photographed film to the storage magazine. It is intended to be incorporated into the

The film changer further includes a film ejection device located outside the supply magazine and between the supply magazine and the transport mechanism. This ejection device is equipped with a vacuum butt, and the film exchanger is provided with a vacuum butt, and the film ejection device is provided with a vacuum butt. By giving a movement of lowering it towards the bottom and a movement of moving it laterally towards the transport mechanism after rising, the vacuum vat picks up the stacked films in the magazine one by one and moves them outside the magazine! The current situation is that these movements require complex mechanisms.

SUMMARY OF THE INVENTION An object of the present invention is to provide a film MR dispenser for a film exchanger of a medical Xa apparatus which has a simple and compact structure.

The film unloading device according to the present invention is disposed inside a film exchanger as shown in FIG. 1, for example.

This film exchanger is configured as a 'dark box' with 9 main bodies and 10
A storage magazine 11 for storing unphotographed sheet film and a storage magazine 12 for storing photographed film are removably attached to the end of the main body. . A film holder 13 is also housed within the main body and can be moved between a standby position shown by a solid line and a photographing position shown by a chain line.A transport mechanism 14 is located between the standby position and both magazines and is movable within the main body. It is located in The unphotographed sheet film in the storage i magazine is sent to the film holder 13 by the transport mechanism 14. When the film holder Fi film is loaded, it closes and moves to the photographing position shown by the chain line. Film IfixI in the holder! From the source 15, the fluoroscopy of the subject 17 by the Xm East 16 is recorded.Then, the film holder is placed in the standby position.The film is sent to the transport mechanism by the rollers on the holder.
The film is delivered to the storage magazine 12 by the transport mechanism. The film take-out device 18 according to the present invention
It is provided in the main body between the storage magazine 11 and the supply magazine 11, and feeds the sheet films stacked in the storage magazine one by one to the transport mechanism. 2 to 4 show details of the film ejection device. This device has arms 21 and 22 that support the vacuum pad 3.
and arms that rotatably support these arms,
It has a parallel link mechanism 25.26°4 that supports the arm η and 23 so as to be movable in a straight line. Vacuum pad 3 is sheet film FK9! From the ljl state, remove the cam plate (9
) rotates the arms 21 and 22 to separate and attract one sheet of film and raise it, and the movement of the arm by the cam plate 31 feeds the sheet film to the film transport mechanism while it is being attracted. ing. Each part will be explained in detail.

The arms 21, 22 are arranged parallel to each other. Each arm is fixed to a shaft, and the shaft is held in a bearing on the arm.An arm 6.26 is rotatably connected to both of the shafts, and these arms are connected by axis n. This shaft has a bearing Bl in the main body lO,
It is held in B2. Further, an arm calculation/28 is rotatably connected to the arm. The arm 28 is held by a bearing in the body 10 (by the shaft 4). The arms 21 and 22 are arranged parallel to the arm δ, and these arms together form a parallel linkage.
The frame can be rotated in the direction of arrow B as well as the arm.
Can move horizontally in the direction of

These movements of the arms 21, 22, 23 are provided by the cam plates 30, 31, as described above.
These cam plates are fixed to a shaft 9, and can be rotated by holding this shaft in bearings B5 and aII on the main body. Follower 3 for cam plate (equipment)
3 is provided for arm recitation. This arm is fixed to a shaft held by a bearing B5 in the main body 10. The shaft extends to the side of the arm 14, and a cam plate that is approximately T-shaped is fixed to its end. A follower n attached to the side surface of the arm 21 is in contact with the cam plate 36.

In order to maintain contact between the cam plate I and the follower n, and between the cam plate I and the follower n, the shaft I is connected to a spring fI. On the other hand, the follower 38 relative to the cam plate 31
is attached to an arm 5 constituting a parallel link mechanism, and this arm is maintained in contact with the cam plate by connecting it to suitable spring means.

The shaft blades to which the cam plates 30 and 31 are fixed are connected to an electric motor built into the main body 1. When these cam plates are rotated counterclockwise, the driven blade moves along the cam contour of the cam plate I, and the shaft rotates counterclockwise. Then, the cam plate pushes down the follower 37, and the arm 21 is rotated counterclockwise on the arm. The vacuum pad 3 is thereby raised. When the vacuum vat rises to a predetermined height, the follower side is moved by the cam plate 31, and the arm δ rotates clockwise around the axis n.
When the arm is moved, 21 moves laterally. Arm 25.26.2
Since B forms a parallel link mechanism, the arms 4, 22 move in parallel, and the bat is thereby moved in parallel.

Sheet film F laminated inside supply 1 gazine 11
When the vacuum vat 3 rises, the film at the top is attracted to the vacuum vat and separated from other films, and due to the lateral movement of the vacuum vat, the suctioned film is transferred to the roller R1 in the conveying mechanism. It is held in R2's mouth. Although not shown, the vacuum vat is connected to a vacuum pump installed in the main body by a vacuum hose.
Air inside the film is expelled when it is pressed onto the film, and air is blown into the film when it is gripped by rollers.

As the camshaft β continues to rotate, the vacuum vat that has sent the film to the transport mechanism is laterally moved in the opposite direction, then lowered, is pressed against the next sheet of film, and repeats the same operation. Repeat.

In this mechanism, when the vacuum knot is raised,
Gradually, it is being tilted upwards. In order to perform such posture control, the knot 3 is mounted on a support base 4.
1, the arm 43 is attached so that it can rotate around the shaft 42.
Has been a fixed store through. The shaft 42 is held in bearings on the arms 4,22. The grooved cam 6 is provided with a rotational movement on the shaft 42, i.e. a cam profile which gives the knot a gradual upward inclination. Therefore, as the vacuum knot rises, it swings around the shaft 42, dropping the sheet film adhered by static electricity, etc., and reliably feeds the sheet film one by one. - In this film unloading device, by changing the cam profile of the cam plate (material), it is possible to make it possible for the vacuum knot to move vertically after adsorbing the film. Even if multiple sheets of film are attracted, it is possible to drop them into the magazine.
It shows one cam plate. In this cam plate, the knot is crimped onto the film by section 31A, and the knot is crimped onto the film by section 318K.
Therefore, after raising the bat, the bat is lowered again through section 31C, and then raised to a predetermined height through section 31D.

As shown in the embodiments described above, the film take-out device of the present invention has a first arm that supports the vacuum vat, a second arm that rotatably supports the first arm, and a second arm that rotatably supports the first arm. a guide means for supporting the second arm for linear movement of the arm; and a cam means for imparting rotational movement to the g-arm and linear movement to the second arm, the cam means being coaxial. From two disposed force plates, a follower combined with the valley cam plate, and means disposed between each follower and the arm for transmitting the movement of each follower. By rotating the cam plate by a single drive 11, the vacuum vat can be given sheet film separation and feeding motion, and this can be done by a single mechanism. , so the structure is extremely simple.

[Brief explanation of drawings]

The drawings show an embodiment of the film take-out device of the present invention, and FIG. 1 is an explanatory diagram showing an example of the state in which it is installed in a film exchanger, and FIG. 2 is an enlarged front view of the device itself. The drawings are a left side view of FIG. 2, FIG. 4 is a perspective view showing the overall configuration and is a modified version, and FIG. 5 is an explanatory view showing another configuration of the cam plate. 3... vacuum rose), 21.22... first arm,
... second arm, 25.26.28... guide means, (9), 31... cam plate, 33, 37...
- Follower, ah...transmission means. Patent Applicant Hitachi Medeico Co., Ltd. Agent Patent Attorney Masami Akimoto Figure 3 23 Figure 4 259-

Claims (1)

[Claims] 1. A first arm that supports the Makabe pad, a second arm that rotatably supports the first arm, a guide means that supports the second arm so as to move the second arm in a straight line, and a second arm that supports the first arm rotatably. cam means for imparting rotational motion to one arm and linear motion to the second arm, two cam plates on which the cam means are coaxially arranged, and a follower combined with each cam plate. and means disposed between the followers and the arms for transmitting the movement of each follower to each arm. .