JPS6334522A - Divided photographing device - Google Patents

Abstract

PURPOSE:To enable exact positioning of >=3 stages of exposed images and exposing of said images onto a photosensitive material by providing a planetary gear mechanism in which an output end provided with >=3 points of top and bottom dead points is connected to a holding means during one rotation. CONSTITUTION:A pin 62 arrives at a 1st top dead point 62A of a trochoid locus 86 in the state in which a rotating gear 70 is disposed right above a stationary gear 76. The pin 62 moves slightly before a 1st bottom dead point 62B of the trochoid locus when a shaft 72 is rotated about 95 deg. clockwise from the above-mentioned state. The gear 70 moves to right under the gear 76 and the pin 62 arrives at the 2nd top dead point 62C of the trochoid locus 86 when the shaft 72 rotates further. The pin 62 moved slightly blockward of the 2nd bottom dead point 62D of the trochoid locus 86 on further rotating of the shaft 72. A cassette holding means 22 is exactly stopped regardless of the error in the stop position of a said top dead point position and bottom dead point position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a divisional photographic device that exposes a plurality of images onto a single sheet of photosensitive material.

[Background technology]

In the field of medical diagnosis, the image on a monitor TV is divided onto a single sheet film (often in the darkest area, and this sheet film containing multiple images may be cut into individual images after shooting is completed). be.

This divided photographic device was published in Japanese Patent Application Laid-Open No. 55-60937.
The device is disclosed in the publication No. In this photographic device, since the film is supported horizontally, there is a possibility that the film may lose its flatness due to gravity. In order to solve this problem, the applicant has proposed a segmented photographic device that holds the film vertically and exposes the image (Japanese Patent Application Laid-Open No. 58-1993-1).
No. 162,944), this divisional photographing device converts the rotation of a motor into vertical movement of a sheet film using a crank mechanism, and performs divisional exposure by moving the sheet film vertically relative to an exposed image.

In this split photographic device, when exposing images on the sheet film in two stages, upper and lower, if the sheet film is stopped at the top dead center and bottom dead center of the crank mechanism, the error in the stopping position will be reduced. Exposure to positions with positive values becomes possible.

However, with this crank mechanism, when exposing an image onto a sheet film over three or more stages above and below, the exposed image in the middle of the top and bottom does not correspond to the top dead center or bottom dead center of the crank, so the stop position of the crank mechanism cannot be adjusted. There is a problem that the error becomes large.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to provide a divided photographic apparatus capable of maintaining the image exposure position in the positive direction even when the exposed image is divided into three or more stages.

[Summary and operation of the invention]

The present invention provides a divisional photographic device that exposes images to a plurality of locations on a photosensitive material, comprising: holding means for the photosensitive material; and - an output end having three or more vertical dead centers during rotation is connected to the holding means; The planetary gear mechanism is characterized by having a planetary gear mechanism, and a driving means for driving the planetary gear mechanism.

Therefore, in the present invention, the planetary gear mechanism reliably stops the photosensitive material at the upper and lower dead centers, thereby making it possible to accurately position exposure images of three or more stages and expose them onto the photosensitive material gear 4.

If a super star gear mechanism is provided with a fixed gear and a rotating gear that meshes with the fixed gear and rotates around the fixed gear, the portion other than the axis of the rotating gear has a trochoidal curve locus, so that the top and bottom dead center If the rotary arm is fixed to a rotary gear having three or more locations, the rotary arm will have three or more vertical dead centers. Therefore, it is sufficient to pivotally support a connecting arm to this rotating arm, and connect this connecting arm to a photosensitive material holding means that can move up and down.

[Embodiments of the invention]

FIG. 1 shows a divided photographic apparatus 10 according to this embodiment. In this split photo studio rlO, the box-shaped main body 1
A monitor television 14 is disposed within 2, and its upper surface serves as a display surface. A photographing lens 16 corresponding to this display surface,
A shutter 18, a mirror 20 and a cassette 24 within a cassette holding means 22 are provided.

For this reason, the image on the monitor television 14 is projected and exposed onto the cassette 24 by opening and closing the shutter 18, and is imaged onto the film 26 inside the cassette 24.

The monitor television 14 is movable along a rail 28 laid in a direction perpendicular to the plane of FIG. 1, and can be moved on the rail 28 by the driving force of a motor 30.

This motor 30 has an output shaft 32 as shown in FIG.
One end of a rotating arm 34 is fixed to the rotating arm 34, and one end of a connecting arm 38 is pivotally supported at the tip of the rotating arm 34 by a pin 36. The other end of this connecting arm 38 is pivotally supported by a bin 40 to a bracket 42 to constitute a crank arm mechanism, and by fixing this bracket 42 to a monitor TV mount 44, the monitor TV 14 is driven in the left-right direction in FIG. be done.

In this case, the state shown in FIG. 2 of the bin 40 of the connecting arm 38 is the state in which it has been moved by the maximum amount to the left in FIG.
This is the state in which the rotating arm 34 is rotated by 180 degrees, as shown by the imaginary line, in which it has been moved to the right in FIG. 2 by the maximum amount. In other words, the pin 40 of the crank arm mechanism that includes the rotating arm 34 and the connecting arm 38 has the least amount of movement relative to the amount of rotation of the rotating arm 34 at these two dead centers, and the error in the monitor TV 14 at the two left and right locations is minimized. can be stopped accurately.

A cam plate 39A is fixed to the output shaft 32 of the motor 30, and limit switches 39B and 39C are provided to detect the movement of the cam plate 39A.
The rotation stop position of 0 is detected.

Inside the cassette holding means 22, the cassette 24 is pressed toward the projection side by a leaf spring 46, so that a through hole (not shown) provided in the cassette 24 is aligned with the exposure axis. This through hole can be closed with a cutter (not shown), and the cover is pulled out with the cassette 24 inserted into the cassette holding means 22.

Further, when the cassette 24 is inserted into the cassette holding means 22, the cassette insertion opening 50 of the main body 12 is closed by the cover 52. The cassette 24 may have through holes on the front and back to accommodate two films, and may be exposed from the front and back respectively.

A drive mechanism 53 for driving the cassette holding means 22 is shown in FIG. 3.4. As shown in FIG. 4, this drive mechanism is for exposing images to the film 26 in the cassette in three stages, upper and lower.

As shown in FIG. 3, both lateral ends of the cassette holding means 22 are inserted into grooves 56 of a guide 54 and guided so as to be movable up and down.

Further, one end of a connecting arm 60 is pivotally supported by a pin 58 at the lower end of the cassette holding means 22.
The other end of the 0 rotation arm 64 is pivotally supported via a pin 62 to one end of the rotation arm 64. A pin 66 is fixed to the other end of the 0 rotation arm 64, and this pin 66 passes through a support arm 68 to support the rotation arm 64. This pin 66 is pivotally supported on the arm 68.
A rotating float 70 is fixed to the penetrating tip of the thread.

A shaft 72 is fixed to the support arm 6 by a key 74, and a fixed gear 76 is attached to this shaft 72.
is pivotally supported, and this fixed 1'! The first wheel 76 meshes with the rotating gear 70.

A boss 78 projects from the stationary gear 76 and is secured to a stationary bracket 80 as shown in FIG. Therefore, the fixed gear 76 does not rotate, and the fixed gear 76 does not rotate.
6 constitutes a planetary gear mechanism in which a rotating float 70 revolves around and rotates on its own axis.

The shaft 72 is connected to the output shaft of a motor 82, and the motor 82 is supported by the main body 12 via a support bracket 84.

In this way, the drive mechanism 53 is a combination of a planetary gear mechanism and a crank arm mechanism, and as shown in FIG. 4, as the rotating gear 70 revolves around the fixed float 76, the rotating arm 64 revolves together with the rotating float 70. As the pin 62 rotates on its own axis, the pin 62 forms a trochoid locus 86 as shown in FIG. 4(A).

That is, when the rotating gear 70 is directly above the fixed gear 76 and the connecting arm 60, rotating arm 64, and support arm 68 are arranged in a straight line as shown in FIG. 62A of the first top dead center of
It has reached this point. From this state, the shaft 72 rotates approximately 95 degrees clockwise.
When rotated once, the state shown in FIG. 4(B) is obtained. In this state, the pin 62 is slightly before the first bottom dead center of the trochoid locus, and the rotating arm 64 is directed downward at an inclination of about 10 degrees with respect to the vertical direction. Here, the pin 58 has reached the lowest point in the vertical direction. As the shaft 72 further rotates, the rotating gear 70 comes directly under the fixed gear 76, and the rotating arm 64 overlaps the supporting arm 68 as shown in FIG. 4(C).
The pin 62 reaches the second top dead center 62C of the trochoid trajectory 86.

Further, the shaft 72 rotates, and the rotary gear 70 reaches a state symmetrical to the state shown in FIG. 4(B) via the fixed gear 76, as shown in FIG. 4(D). That is, in this state, the pin 62 is at a position slightly behind the second bottom dead center 62D of the trochoid locus 86, and the pin 58 is at the same position in the vertical direction as in the state of FIG. 4(B), that is, at the lowest point. It becomes.

In this way, the pin 62 forms a trochoidal locus 86, and the amount of movement of the pin 62 is determined by the pin 58 via the connecting arm 60.
However, since the pin 58 moves up and down linearly along the guide 54 together with the cassette holding means 22, the state shown in FIG. The state is shown in Figure 4 (
The states shown in B) and (D) are the states in which it has been pulled down to the lowest position, and the state shown in FIG. 4 (C) is the state in which it has reached the intermediate point.

Here, each of the upper and lower dead centers 62A to 62D of the trochoid locus 86
In this case, although the motor 82 rotates at the same speed, the amount of vertical movement of the motor 82 is reduced, so if the cassette holding means 22 and the cassette 24 are stopped near the top dead center position and the bottom dead center position, the motor 82 can be stopped. Despite the positional error, the cassette holding means 22 and the cassette 24 can be stopped at positive 6'α.

The shape of this trochoid trajectory is changed depending on the length of the support arm 68 and the like.

In addition, the reason why the pin 62 draws the trochoidal trajectory shown in Fig. 4 is as follows.
This is a case where the two planetary gears have the same number of teeth.

Further, rotation control of the motor 82 is performed by a structure similar to that of the cam 39A and limit switches 39B and 39G shown in FIG.

Next, the operation of this embodiment will be explained.

First, a case will be described in which ill projection exposure is performed from the upper frame to the lower frame at the left exposure position among the six exposure positions shown in FIG. 4(A).

The motor 30 shown in FIG. 1 is driven to arrange the rotary arm 34 and the connecting arm 38 on a straight line as shown in FIG. 2, so that the monitor television 14 corresponds to the n-point portion on the left side of FIG. 4.

Here, the motor 82 is driven to rotate the rotary gear 70 approximately 95 degrees as shown in FIG. 4(B).

Therefore, in the cassette holding means 22, the projected light from the monitor television 14 is
The top piece 26 in the left row as shown by the diagonal frame in Figure (13)
A is projected and exposed.

Here, the motor 82 is driven, and the rotating gear 70 is moved to the fixed gear 7.
6, the cassette holding means 22 is pulled up as shown in FIG. 4(C), so that the projection light is exposed to the intermediate frame 26B in the left row.

Here, the motor 82 is further driven, and the rotating gear 70 is rotated to the fourth position.
If it is rotated through the state shown in figure (D) to the state shown in (A),
The cassette holding means 22 is lifted to the highest position,
The projection light is exposed to the bottom frame 26C in the left row.

Since these exposures are all at and around the vertical dead center of the crank arm mechanism, the error in vertical movement relative to the rotation of the motor 82 is extremely small.

Next, when exposing the right column, the motor 30 is
The rotation stop position of this monitor television 14 is also set by the motor 3.
Since the vertical dead center of 0 is used, the error in the stopping position is considerably small. Therefore, inexpensive and easy-to-control motors such as induction motors and reversible motors can be used.

Note that the order of projection exposure can be changed as necessary, and when exposing in the order of the bottom frame 26C, middle frame 26B, and top frame 26A, it is sufficient to move in the order of FIG. 4(A), (C), and (D). Alternatively, the monitor television may be moved at each of the top and bottom dead centers to continuously expose two positions on the left and right sides of each row on the film.

The control Il of the drive mechanism described above may be performed by remote control.

Next, how to obtain the dimensions of each part when applying this embodiment will be explained.

First, the pitch P of the projection pieces is determined. Next, the pitch circle diameter of the gears 70 and 76 is determined in accordance with this piece pitch. That is, if the pitch diameter of both gears 70 and 76 is l, this is equal to the length 11 of the support arm 68, and as shown in FIGS. Height Ll and L from axis 72 at position
2 means (L, -t,, > -p ・ ・
・It is related to (1). Also, L+ = βl + i”13 ... (2) Lz
”” l+ + is + is ... (
3), where 12 is the length of the rotating arm 64, l,
is the length of the connecting arm 60. Therefore, (1) above, (
From equations 2) and (3), β, +Ilz +1. s −(1+ +βz ”
13) =P... (4) 2ffi, -P... (5) 1, = i-p/2... (6) It becomes. Therefore, when the vertical feed amount of the film 26 is determined, the diameter of the gear 70.76 is set to 1/2 of this value. Note that the value of i may not be designed depending on the value of P due to the gear module, number of teeth, strength, etc., and in that case, it is necessary to change the value of P to some extent.

Next, the length e of the connecting arm 60 is set to an appropriate value in consideration of the installation space and the like. Also, the length of the rotating arm 64 Ilt
is determined as follows. That is, the distance (y) between the pin 58 and the motor shaft is )'-L + -e + + 1g + 1s in Fig. 4(A).
... (7) Figure 4 (B) when the cassette is at its lowest position
In the state, the minimum value of y is )'-L3-jll +lt +ls 2P...
・The relationship (8) holds true. Here, if the rotation angles of the support arm 68, rotating arm 64, and connecting arm 60 are respectively θ, 2θ, and α as shown in FIG. 3, then y(θ)=l, cosθ+1 IC0320+13
cOsα・・・・(9) 1 3sinα x 1, sinθ = 12
12 is obtained so that cos2θ becomes 0th order ymax −y+min −2P.

In the above embodiment, a gear planetary mechanism having a fixed gear 76 and a rotating gear 70 is shown, but any other planetary gear mechanism having three or more vertical dead centers can be applied. Furthermore, if this drive mechanism consisting of a gear mechanism and a crank arm mechanism is used as a drive mechanism for the monitor television 14, it becomes possible to expose the film 26 in three rows to the left and right.

Furthermore, when performing divisional imaging over four or more stages above and below, a drive mechanism having dead centers at four or more locations above and below may be used.

The film 26 in the above embodiment may be placed directly into the cassette holding means 22 without using the cassette 24.

In the above embodiment, in FIGS. 4(B) and 4(D), the shaft 72 is moved clockwise by about 9 degrees from the state of FIGS. 4(A) and 4(C).
Although it has been explained that the film 26 is at the lowest position when rotated by 5 degrees, this rotation angle may vary depending on the length of each arm, the diameter of the gear, etc. Further, in the above embodiment, the vertical driving force is transmitted to the cassette holding means 22 via the rotating arm 64 and the connecting arm 60, but the connecting arm 60 is omitted, and the pin 62A can be moved relative to the cassette holding means 22 only in the horizontal direction. By attaching the trochoid locus 86 to the lowermost position of the cassette holding means 22, the bottom dead center of the trochoid locus 86 can be aligned with the lowest position of the cassette holding means 22.

〔Effect of the invention〕

As explained above, the present invention is a divisional photographic device that exposes images to a plurality of locations on a photosensitive material. Since it is characterized by having an f1 star gear mechanism connected to the holding means and a drive means for driving this planetary gear mechanism, even when there are three or more stop positions for divided photography, these stop positions can be easily adjusted. It has an excellent effect that can be maintained accurately.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a photographing device showing an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the line n--n in Fig. 1 showing a monitor TV drive part, and Fig. 3 is a main part showing a vertical drive mechanism of a cassette. FIGS. 4(A) to 4(D) are explanatory views of the operation of the cassette drive unit. IO...Division photography device, 14...Monitor television, 22...Cassette holding means, 24...Cassette, 26...Film, 53...Drive mechanism, 70...Rotating gear, 76...Fixed gear.

Claims (3)

[Claims] (1) A divisional photographic device that exposes images to multiple locations on a photosensitive material, in which a holding means for the photosensitive material and an output end having three or more vertical dead centers during one rotation are connected to the holding means. What is claimed is: 1. A split photographic device comprising: a planetary gear mechanism; and a drive means for driving the planetary gear mechanism. (2) The division according to claim 1, wherein the planetary gear mechanism includes a fixed gear and a rotating gear that meshes with the fixed gear and rotates around the fixed gear. Photography equipment. (3) The division according to claim (2), wherein a continuous arm whose one end is connected to the holding means is pivotally supported on the rotating arm fixed to the rotating gear. Photography equipment.