JPS5848044A - Sheet film feed-out device - Google Patents

Abstract

PURPOSE:To feed out a sheet film to a photographing part by small resistance, by holding a film bending preventive member by a return member for returning a sheet film of the outermost part in the direction opposite to the direction for feeding it into the photographing part. CONSTITUTION:To a return member 16, a shaft 61 is fix-provided, and also between the return needle members 16, a film holding roller 63 is held through a bearing 62 so as to be rotatable. In this state, when the return needle executes a rotating parallel motion clockwise, the return needle member 16 and the film holding roller 63 move as one body, therefore, not only the part against which a return needle 16' of a sheet film F' of the uppermost part, which is returned in the direction opposite to the photographing part, but also the center part are held by the film holding roller 63. In this way, the sheet film is fed out to the photographing part by small resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for separating a large number of laminated sheet films at high speed and feeding them into a photographing section in a sheet film photographing apparatus used in an Xa photographing system or the like.

Conventionally, sheet film separation means for high-speed sheet film imaging devices that need to take several images per second, such as in circulatory organ imaging, involves separating sheet films one by one into a separator provided in a supply magazine. The conventional method was to insert the camera into the camera and separate it using a scraping mechanism provided on the camera body.

However, this method has a problem in that the operation of sandwiching the sheet films one by one between separators must be performed in a dark room.

Furthermore, in order to obtain images with higher diagnostic ability,
There is a demand for high-speed sheet film photography equipment that can take pictures no matter what position it is placed in, and when it is used perpendicular to the floor or even upside down, it is necessary to The surface of the laminated sheet film becomes unstable because the sheet film that is being stacked falls down or the direction of gravity acting on the sheet film is in the downward direction. There is also a Frlfl point in how the film is separated and fed.

The purpose of the present invention is to eliminate the above-mentioned conventional problems in transportation, and more specifically, to load a large number of laminated sheet films into a supply magazine at once, and to The Lmost sheet film layer of the sheet film is once returned to the direction opposite to the direction in which it is fed into the photographing section to separate only the sheet film from the other laminated sheet films, and then this separated sheet The sheet film feeding device is designed so that only the film is not sent to the photographing unit, and the uppermost sheet film is transported at high speed while the surface of the stacked sheet films is stabilized.
Provide a means of separation.

Hereinafter, specific implementations of the present invention will be explained with reference to the drawings. Figures 1 to 8 show a sheet film feeding device according to the present invention, and 2 is a film tray, on which a large number of sheet films F are stacked. sent to the department. FIG. 1 is a side view in a stopped state, FIG. 2 is a cross-sectional view, and FIG. 3 shows the uppermost sheet film F being returned in the direction opposite to the photographing section, and the slit members 18, 19
FIG. 4 is a cross-sectional view showing the state in which the sheet film F' is inserted into the slit formed by the tapered member 26, and FIG.
The figure is a sectional view showing a state in which the uppermost sheet film F' has been sent out to the photographing section side and inserted into the feeding roller of the photographing section main body 1Fll. 6, 7, and 8 are A, -A, and BB in FIG. 2.

It is a figure showing a 'cc-c cross section, respectively.

Hereinafter, the configuration and operation of the sheet film feeding device according to the present invention will be explained in order.

? In FIG. 2, which shows the stopped state, a large number of sheet films F are stacked on the film tray, the return needle member 16 is not in contact with the uppermost sheet film F', and the scraping claw 41 is moved in the direction of the arrow. It shows you about to go back.

When a driving force to rotate the drive shaft 5 is transmitted from the imaging unit main body in this state, the rotation shaft 7.7' begins to rotate and at the same time the return needle member 16 rotates clockwise (in the direction of the arrow) in parallel. exercise. Eventually, the return needle 16' attached to the return needle part 116 begins to come into contact with the uppermost sheet film sheet. As the shafts 7, 7' continue to rotate further, the return needle 16' moves the uppermost sheet film F.
While maintaining contact with the photographing part, the sheet film is moved back in the direction opposite to the photographing part, and the sheet film is inserted into the autumnal equinox slit (Fig. 3.Bm) formed by the slit members 18 and 19. The center portion of the rear end of F' is inserted. At the same time, both side portions of the rear end of the returned uppermost sheet film F' curve upward along the 0 portion of the tapered member 26, resulting in a state as shown in FIG. Before reaching this state, the scraping claw 41 has returned to the position shown in FIG. 3.

When the shafts 7, 7' continue to rotate and the return needle 16' moves away from the uppermost sheet film F' and performs a rotational parallel movement, the scraping pawl 41 is moved to the photographing section by the action of the scraping cylindrical cam 270. The tapered member 26 engages both side portions of the rear end of the uppermost sheet film F', which is curved upward by the tapered member 26, and the sheet film F'
' is sent to the photography department. Immediately before this scraping operation begins, the film presser roller 248 is moved by the action of the film presser roller upper and lower cams 53. Guide claw 49. By pushing down the guide roller 50 and stopper 46 in the figure, and pushing down the tips of the sheet films F other than the uppermost sheet film F' on the photographing section side, only the uppermost sheet film F' is transferred to the photographing section main body. can be sent out.

(Fig. 5) If it operates in this way, by rotating the drive shaft 5 once, the stacked sheet films F can be separated one by one and sent to the photographing section. In the sheet film feeding device, a mechanism for returning the uppermost sheet film F' in the direction opposite to the direction in which it is fed into the photographing section will be briefly described. In Figure 2, 1
Reference numeral 6 denotes a return needle member that holds the tip of the return needle 16' with the tip protruding slightly from the film.
6 has a shaft 61 fixed thereto as shown in FIG. 7, and a film pressing roller 63 is rotatably held between the return needle members 16 via a bearing 62. Here, the return needle 16' and the film presser roller 63 are in a positional relationship such that the lower end of the film presser roller 63 is approximately 0.5 to 1.0 mm above the tip of the return needle 16' in FIG. It has become. Then, the return needle member 16 is moved in the time direction (
Since the return needle member 16 and the film pressing roller 63 move in unison, the return needle 16' of the uppermost sheet film F' returned in the opposite direction to the photographing section is rotated and parallel to the arrow). In addition to the part that is touched, the central part is also pressed by the film pressing roller 63. Therefore, the central part of the rear end of the sheet film F' is connected to the slit member 18.1.
When inserted into the slit formed by 9,
Since the surface of the sheet film F' is stable, the process is carried out smoothly.

In the previous implementation/column, the film presser row 263 held by the return needle member 16 was made rotatable, but it may also be fixed. The sheet metal 64 may be fixed. This is possible because the uppermost sheet film F' is reliably returned in the direction opposite to the photographing section by the return needle 16', so that the sheet film is not scratched by the film holding plate 64.

As explained above, if the film holding row 263 is attached between the return needle members 16 and moves together with the return needle member 16 to return the uppermost sheet film F' while pressing the surface, The stability of the surface of the sheet film F' can be measured, and the rear end central portion of the sheet film F' can be smoothly inserted into the slit. This may occur not only when this sheet film feeding device is used horizontally to the floor, but also vertically or even upside down, causing the stacked sheet films F75E to fall over. Since the direction of gravity applied to the sheet film is in the downward direction, the surface of the stacked sheet films becomes unstable, but according to this embodiment, this effect is further exhibited. In other words, in the example shown in FIG. 10 when the sheet film falls vertically, the stacked sheet films bend downward in the figure, so that the uppermost sheet film F' does not enter the sulin (section a). This is because, as shown in FIG. 11, the film pressing roller 63 suppresses the deflection of the central portion of the sheet film, so that the uppermost sheet film F' can be smoothly inserted into the slit.

Furthermore, when the sheet film F' that has been returned and separated in the direction opposite to the photographing section is sent out to the photographing section by the scraping claw 41, the center portion of the sheet film being sent out becomes unstable and tends to hit other members. As shown in factor 12, the presence of the film pressing roller 63 has the advantage that the sheet film does not hit other members and is fed to the photographing section with less resistance.

[Brief explanation of the drawing]

Fig. 1 is a side view of the sheet film feeding device of the present invention in a stopped state, Fig. 2 is a sectional view thereof, Figs.
5 and 5 are cross-sectional views during operation, and FIGS. 6, 7, and 8 are A-A, BB, and C in FIG. 2.
- It is a figure which shows the C cross section, respectively. FIG. 9 is a diagram showing another embodiment. FIGS. 10 to 12 are diagrams illustrating the effect when the device falls vertically. In the figure, 2 is a film receiver, 5 is a drive shaft, 16 is a return needle member, 16' is a return needle, 18.19 is a slit member, 2
6 is a tapered member, 27 is a cylindrical cam for scraping, 41 is a scraping pawl, 48 is a film press roller, 49 is a guide pawl, 5o is a guide roller, 53 is a film press roller upper and lower cam, 57 is a film ejection opening, 59.60 61 is a shaft, 62 is a bearing, 63 is a film press roller, 64 is a film press plate, F is a laminated sheet film, and F' is the uppermost sheet film. Applicant Canon Co., Ltd.

Claims (2)

[Claims] (1) Return the outermost sheet film of a large number of laminated sheet films in the direction opposite to the direction in which it is fed into the photographing section to separate only the sheet film from the laminated sheet film of the song, and then In the sheet film feeding device that sends out only the separated sheet film to the photographing section, one role is to hold the film deflection prevention member in the return member that returns the sheet film outside in the opposite direction to the direction in which it is fed into the prefectural shadow section. A sheet film feeding device characterized by: (2) The sheet film feeding device according to claim (1), wherein the film sag prevention member comprises a roller.