JPS61295937A - Cassetteless snapshotting apparatus - Google Patents

Abstract

PURPOSE:To enhance the degree of accuracy in positioning an upper lid in a film discharge position, and a lower lid and a drive roller in a film charge position, by controlling the upper lid to position the drive roller with respect to the movable side front end section of a holder, and by controlling the lower lid to carrying out a final positioning. CONSTITUTION:A support frame 304 is moved rightward to clamp a photographed film between a drive roller 21a and an idle roller 21b. Further, after a lower lid 302 is rotated counterclockwise, a prephotographed film is clamped between the drive roller 21 and the idle roller 21c to carry out the discharge feed of the photographed film and the charge feed of the prephotographed film. During this period, an upper lid 301 is rotated until a roller 122 enters into a hardware 302a to roughly position a holder. Then, due to clockwise depression of hardware 302a by the roller 122, the lower lid 302 is set on the drive roller 21a at a predetermined position. With this arrangement it is possible to enhance the degree of accuracy in positioning the upper and lower lids 301, 302 and the drive roller 21a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a snapshot device used in a cassette-less X-ray fluoroscopic photographing table, and particularly relates to a cassette-less snapshot device having a suitable X-ray image recording medium (hereinafter referred to as film) feeding mechanism. It is related to the device.

[Background technology]

Conventional caseless X1! For example, as shown in FIG. 10, the fluoroscopic imaging table is configured to transmit X-rays upwards across a top plate 3 that is guided so as to be movable vertically and horizontally on a table support frame 2 that is rotatably supported by a support stand 1. A cassette-less copying device (hereinafter simply referred to as a copying device) 6 is placed below the tube device 5, and
The X-rays emitted from the ray tube device 5 pass through the subject 4 lying on the top plate 3, pass through the image intensifier 7 attached to the snapshot device 6, and enter the X-ray television 8. , and is configured to obtain an X-ray image. Snapshot device 6
The operator takes out a large number of stored unexposed films 11 one by one and moves them appropriately to the center of the X-ray irradiation field using the operation switch operated by the operator, thereby obtaining an X-ray photograph of the subject 4.

In order to obtain an X-ray photograph, a film is sandwiched between intensifying screens, brought into close contact with each other, and X-rays are irradiated.Then, the contact is released, the photographed film is taken out from between the intensifying screens, and the film is transported. A mechanism for storing in a storage magazine using rollers is required. FIG. 11 is a schematic diagram for explaining the schematic structure of the mechanism.

In FIG. 11, the unphotographed films stacked and housed in the supply magazine 12 are taken out one by one by the vacuum suction pad 13 and taken into the film holder 9 by the unphotographed film transport device 10. Film holder 9 is frame 3
04, an overwriting plate (hereinafter referred to as the upper lid) 301 fixed thereto, and a lower adhesion plate (hereinafter referred to as the lower lid) 302 rotatably attached around a shaft 303. It is composed of holder rollers 9a, 9b and a curved guide 305, and the unshot film is moved to the upper lid 3 by the holder rollers 9a, 9b.
01. The upper lid 301 and the lower lid 302 are inserted between the lower lids 302 and the lower lids 302 rotate upward.
It is placed in close contact between After shooting, the film is transferred to the film holder 9 by reversing the holder rollers 9a and 9b.
Sent from.

The storage magazine 1 is transported by the photographed film transport device 11.
It is stored in 4.

However, the above-mentioned conventional technology has the following problems.

(1) The guide 305 causes deterioration in image quality due to static marks caused by scratches and static electricity.

(2) When the film holder 9 moves from the film loading/unloading position to the photographing position, the holder roller 9a must be flipped up, making the mechanism complicated.

(3) In order to improve the image quality, it is necessary to bring the film as close as possible to the subject, and for this purpose it is necessary to bring the holder closer to the top plate of the snapshot case, but with the holder roller 9a, you can get it that much closer. It disappears.

(4) Since the holder rollers 9a and 9b must be rotated forward and backward, the drive circuit becomes complicated.

(5) The next film cannot be fed until after the film has been fed.

(6) Since the film feeding position and the top lid 301 are close to the same plane, even if there is a slight assembly error between the top lid 301 and the holder rollers 9a and 9b, the film may hit the top lid 301 during feeding, causing film trouble. This is likely to be the cause.

Therefore, in order to solve the above-mentioned problems of the prior art, the number of transport rollers, film guides, etc. in contact with the film surface is reduced as much as possible, thereby shortening the film transport distance, and at the same time, the film is not bent as much as possible. , carried into the holder.

A snapshot device in which the transport roller for transporting out is one drive roller and idle rollers are arranged above and below the transport roller, the position of the transport amount is separated, and the holder is configured to be tiltable so that the film can be caught by the roller at that position. has been proposed (Special application 1973)
No. 8-184126).

However, in this snapshot device, since the rotation of the holder is also used as a cam for opening and closing the upper and lower lids of the holder, it is difficult to align the movable end of the film holder with the drive roller. There was a problem.

[Purpose of the invention]

An object of the present invention is to provide a holder consisting of an upper lid and a lower lid that sandwich a film, a fixed frame that rotatably supports one end of each of the upper lid and lower lid, and a fixed frame that rotatably supports the upper lid and the lower lid. A holder driving means for tilting relative to the fixed frame, a transporting means for transporting one film to the film holder, and a transport driving roller provided between the fixed frame and the photographed film storage section for transporting the film. In the cassette-less speed copying apparatus, the movable tip of the film holder is provided with floating rollers provided above and below the transport drive roller, and a means for carrying in an unshot film and carrying out a shot film separately or simultaneously. An object of the present invention is to provide a technique for improving the accuracy of positioning between a roller and a transport drive roller.

The above and other objects and novel features of the present invention will become clear from the description of this specification and the accompanying drawings.

[Summary of the invention]

A brief overview of typical inventions disclosed in this application is as follows.

That is, a film holder consisting of an upper lid and a lower lid that sandwich the film, a fixed frame that rotatably supports one end of each of the upper lid and lower lid, and a fixed frame that supports the upper lid and the lower lid. a film holder drive means for tilting the film, a transport means for transporting one film to the film holder, and a transport drive roller for transporting the film provided between the fixed frame and the photographed film storage section; In the cassette-less speed copying apparatus, which is equipped with floating rollers provided above and below the transport drive roller, and a means for simultaneously carrying in an unshot film and carrying out a shot film, the tip of the movable side of the film holder and the transport A positioning means for positioning the film holder with the drive roller is provided to improve the precision of positioning the movable tip of the film holder and the transport drive roller.

[Structure of the invention]

Hereinafter, the configuration of the present invention will be explained along with examples.

In all the explanations of the embodiments, parts having the same functions are denoted by the same reference numerals, and repeated explanations thereof will be omitted.6 Figures 1 to 6 show a snapshot apparatus according to an embodiment of the present invention FIG.

FIG. 1 shows a schematic configuration of a film conveyance mechanism, with 20
indicates the film is on the same plane as when it was taken. The film 20 in this position is at the position 201 when the film is fed out.
Then, during feeding, it is moved to position 202. To do this, both the upper lid 301 and the lower lid 302 of the film holder (hereinafter simply referred to as holder) 300 are rotated around the axis 303 in the direction of arrow A, and as shown in FIG. Lower lid 302 is rotated clockwise in the direction of arrow A' to set film 20 at position 201. At this position 201, as shown in FIG. 3, the holder support frame 304 moves rightward (arrow D) to sandwich the photographed film 20a between the drive roller 21a and the idle roller 21b. Furthermore, as shown in FIG. 4, the lower lid 302 further rotates clockwise (in the direction of arrow E) to open the holder 300. In this state, the unphotographed film 20b is sandwiched between the drive roller 21a and the idle roller 21c, and the photographed film 20a is ejected and conveyed, and the unphotographed film 20b is inserted and conveyed. Next, when the insertion of the unshot film 20b is completed.

The upper lid 301 is further rotated clockwise to close the holder 300, as shown in FIG. Next, as shown in FIG. 6, the holder support frame 304 moves to the left (in the direction of arrow F), and the photographed film 20a and the unphotographed film 20a are moved to the left.
b is removed from the drive roller 21a and the idler rollers 21b and 21c.

That is, it is set at position 202 shown in FIG.

Here, the upper lid 301 and lower lid 302 of the holder 300
Rotate both counterclockwise (direction of arrow G) and remove holder 3.
It returns to 00 and enters the shooting standby state.

On the other hand, the photographed film 20a, as shown in FIG.
After being ejected from the boulder 300 while being sandwiched between the driving roller 21a and the idle roller 21b, the ejecting material is stored in the storage magazine 14 by the ejecting conveyance device 22.

Further, the unphotographed films stacked and stored in the supply magazine 12 are conveyed by the insertion conveyance device 25 to the drive roller 21a and the idle roller 21b.

FIG. 7 is a side view showing a schematic configuration of essential parts of an embodiment of the present invention based on the above principle.

The snapshot device of this embodiment is as shown in FIG.

A guide groove member 11 is attached to a shaft 303 rotatably attached to a holder support frame 304 that is movable within the same plane.
5 and the upper lid 301 are fixed.

The lower lid 302 is rotatably attached to a shaft 303. Rollers 119, 120, 121, 122 are rotatably attached to connecting rods 116, 117, respectively. The shafts 123, 124, and 125 are rotatably attached to a snapshot case (not shown). A connecting rod 117 is fixedly supported on the shaft 124, and a connecting rod 117 is fixedly supported on the shaft 123.
16 is fixedly supported. The connecting rods 116, 117 are connected to springs 126, 127 supported by the snapshot case, respectively, and bring the rollers 119, 120, 121 into contact with the guide groove member 115 and cams 128, 129.

Cams 128 and 129 are fixed to shaft 125. The drive roller 21a and the idler rollers 21b, 21c are supported by the snapshot case, and the idler rollers 21b, 21c are
Each of them can come into contact with or separate from the drive roller 21a. The spring 130 is attached to the holder support frame 30
4, and pushes up the lower lid 302 from below. The cam 128 is a cam that rotates the upper lid 301, and the cam 129 is a cam that rotates the lower lid 302. The motor 131 rotates the shaft 125 via a sprocket 132, a roller chain 133, and a sprocket 134. As a result, the cams 128 and 129 rotate,
As the cam 128 rotates, the rollers 120 and 119 move up and down, and the guide groove member 115 rotates about the shaft 303.

That is, the upper lid 301 also rotates around the shaft 303.

Further, due to the rotation of the cam 129, the roller 121 is moved to the shaft 12.
Since the roller 122 rotates around the shaft 124, the roller 122 also rotates around the shaft 124. Due to this.

The lower lid 302 rotates around a shaft 303.

Also, the spring 126 has the force to push down the upper lid 301, the spring 127 has the force to support the weight of the lower lid 302, and the spring 130 has the force to support the weight of the lower lid 302.
is a force that rotates the lower lid 302 upward when the holder 300 changes from the state shown in FIG. 6 to the state shown in FIG. However, if grooved cams are used as the cams 128, 129, the springs 126, 127 are not needed.

Moreover, as shown in FIG. 7, instead of positioning the three states at the tip of rotation, the movable tip O of the holder 300 is positioned near the (rotation center) of the shaft 303 by the guide groove member 115. Because we are positioning.

1. In order to set the film at the film positions 201 and 202 shown in FIG. 1, it is difficult to position the film due to deformation of the holder support frame 304, shaft 303, and other members, backlash, and manufacturing errors of the cam.

Therefore, in order to increase the accuracy of setting the holder 300 at the film positions 201° and 202, the upper lid 301 is moved by the guide groove member 115, and the roller 122 is moved to the lower lid 302.
As shown in FIG. 8, the holder 300 is positioned to a certain extent by rotating the holder 300 to the extent that it enters the metal fitting 302a fixed near the movable end of the holder 300. Next, for final positioning, as shown in FIG. 9, the roller 122 located near the movable end of the lower lid 302
By pushing down a clockwise, the position of the lower lid 302 is set to the predetermined position of the predetermined drive roller 21a.

As a result, the upper lid 301 and lower lid 3 of the holder 300
02 and the drive roller 21a is improved.

As can be seen from the above description, according to this embodiment, the following effects can be obtained.

(1) No curved guide is required inside the holder.

No problems caused by scratches or static electricity.

(2) Since there is no need to provide a conveyance roller inside the holder, the mechanism becomes simple.

(3) The distance between the film and the subject can be shortened by an amount equivalent to the upper roller in the holder.

(4) Since the next film can be inserted immediately after the start of film ejection, the time required to take in and take out the film can be shortened or the speed can be lowered. Note that lowering the speed has effects such as improving film stopping accuracy, reducing the capacity of the drive motor, and reducing noise.

(5) The holder is opened wide so that the film insertion position and the top or bottom lid are not on the same plane or close to the same plane, so the film may hit the top lid when inserting the film. No trouble occurs.

(6) By controlling the upper lid, the movable end of the holder 3°O and the drive roller 21a are positioned to some extent, and by controlling the lower lid, the final positioning is performed.
The positioning accuracy of the drive roller 21a and the upper lid 301 at the film ejection position and the lower lid 302 at the film insertion position can be improved.

The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔effect〕

As explained above, according to the present invention, the movable end of the holder and the drive roller 21 can be connected to a certain extent by controlling the upper lid.
Since the final positioning is performed by controlling the lower lid, it is possible to improve the positioning accuracy between the upper lid at the film ejection position, the lower lid at the film insertion position, and the drive roller.

[Brief explanation of the drawing]

FIGS. 1 to 6 are reproduction diagrams for explaining the principle of a snapshot device according to an embodiment of the present invention, and FIG. Figure 8 is a side view showing the schematic configuration; Figure 8 is a diagram showing a state in which a certain degree of positioning has been achieved with upper lid control; Figure 9 is a diagram showing a state in which final positioning accuracy has been achieved with lower lid control; FIG. 11 is a diagram showing a schematic configuration of a conventional cassette-less X-ray fluoroscopy table. FIG. 11 is a diagram showing a schematic configuration of a conventional snapshot apparatus. In the figure, 115... Guide groove member, 116, 117°.
... Connecting rod, 119, 120, 121, 122 ... Roller, 123, 124, 125 ... Shaft, 126, 12
7.130...Spring, 128,129...Cam, 1
31...Motor, 132,134...Sprocket. 133... Roller chain, 201... Film discharge position, 202... Film insertion position, 301... Upper lid. 302...Lower lid. 302a...metal fittings, 303...
- Axis, 304... is a holder support frame.

Claims (1)

[Claims] (1) An X-ray image recording medium holder consisting of an upper contact plate and a lower contact plate that sandwich an X-ray image recording medium, and a fixed frame that rotatably supports one end of each of the upper contact plate and the lower contact plate. a holder driving means for tilting the upper contact plate and the lower contact plate with respect to the fixed frame; a transport means for transporting one X-ray image recording medium to the X-ray image recording medium holder; and the fixed frame. a conveyance drive roller that conveys the X-ray image recording medium, which is provided between the image recording medium storage section and the photographed X-ray image recording medium storage section; idle rollers that are respectively provided above and below the conveyance drive roller; and the X-ray image recording medium. In a cassette-less snapshot device equipped with means for simultaneously carrying in unphotographed media and carrying out photographed media,
A cassette-less snapshot apparatus, characterized in that a positioning means is provided for positioning the movable end of the X-ray image recording medium holder and the conveyance drive roller.