JPH0138596Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photographic film cutting device in a photographic film feeding device, and more particularly, to a photographic film cutting device in a film insertion box installed in a bright room type automatic film developing machine.

A conventional film insertion box includes a cartridge holder that is slidable on a guide rod provided in the film feeding direction within the film insertion box, and a cutter actuating coil spring that biases the cartridge holder in the opposite direction to the film feeding direction. A feed roller and a pressure roller that is constantly pressed against the feed roller are placed near the film feed opening, and a cutter driven by a motor is placed between the cartridge holder and the feed roller. When the cutter slides against the bias of the coil spring for operating the cutter, the switch of the motor is closed via a detection member installed at the front end of the cartridge holder, and the cutter cuts the film. Connect one end of the shot leader to the tongue-shaped end of the film pulled out from the cartridge,
The other end of the shot leader is inserted between the feed roller and the pressure roller, the cartridge is loaded into the cartridge holder, and the film is fed into the developing unit by the feed roller, and the cartridge holder is connected to the cutter operating coil. Since the film is biased by a spring in the opposite direction to the direction in which the film is fed, when a cut is made when cutting the film, a force is exerted on the cartridge holder to return the film, causing the cut end of the film to tear. This is a problem because the film may become twisted or the film may meander.

The present invention has been made in order to eliminate the above-mentioned disadvantages, and an object of the present invention is to provide a photographic film cutting device for a photographic film feeding device in which the film does not tear or meander when the film is cut. It is something.

In order to achieve the above-mentioned object, the present invention is designed to cause slack in the photographic film from the start to the end of cutting the photographic film. That is, the photographic film cutting device in the photographic film feeding device of the present invention includes a cartridge holder that is slidable on a guide rod provided in the film feeding direction in a film insertion box, and the cartridge holder is attached in the opposite direction to the film feeding direction. The cutter is equipped with a coil spring for actuating the cutter, a feed roller and a pressure roller cooperating with the feed roller are disposed near the film feed opening, and the cutter is driven by a motor between the cartridge holder and the feed roller. is placed, and when the cartridge holder slides against the bias of the coil spring for actuating the cutter, the switch of the motor is closed via a detection member installed at the front end of the cartridge holder, and the film is removed by the cutter. a cam for slightly moving the cartridge holder against the bias of the cutter actuating coil spring at the peripheral edge of the notch surface on the forward side of the notch disk mounted on the output shaft of the motor; A surface is formed in the circumferential direction and extends from the front surface to the rear surface of the notched disk, and a roller is provided at the rear end of the cartridge holder so as to enter the movement locus of the cam surface just before the cutter is operated. The present invention is characterized in that the rollers are engaged with the rear surface of the notch guide disk from the start to the end of cutting the photographic film, thereby causing slack in the photographic film.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an automatic developing machine equipped with a photographic film cutting device according to the present invention in a film insertion box, and FIG. 2 is a partially cutaway sectional view showing the inside of the film insertion box. In FIG. 1, X is a bright room type automatic film developing machine. The automatic processor
Similar to No. 51347, there is a developing device section 1, a drying device section 2 that is connected to the upper part of the developing device section 1 and dries the developed film, and a stocker 3 that stores the dried film. A control box 4 is provided, and a film insertion box 10 for feeding unprocessed film into the developing device section 1 is connected to the control box 4.

As shown in FIG. 2, the film insertion box 10 includes a main body 11 and a lid 12.
The rear edge is connected to be openable and closable by a pair of left and right hinges 15, 15, and is connected to the upper edge of the front plate 16 of the main body 11 and the lid 12.
A stopper 18 is attached across the lower edge of the front side plate 17. A film delivery port 19 is formed in the rear plate 13 of the main body 11. The film feed port 19 is connected to a film insertion port (not shown) of the developing device section 1. On the bottom surface of the top plate 14 of the lid 12 is a cartridge holder 2, which will be described later.
The pressing plate spring 12' is pressed so as to allow the cartridge P loaded in the film to slide in the film feeding direction.
is installed.

20 is a cartridge holder. The cartridge holder 20 is slidably mounted on a guide rod 30 installed between the rear side plate 13 and the front side plate 16 of the main body 11 of the box 10. The direction of the guide rod 30 is the film feeding direction. The cartridge holder 20 has a cartridge P on the top surface.
A loading recess 21 is formed in which the holder 20 is loaded, and a horizontal adjustment screw rod 23 is attached to the lower end of a support rod 22 fixed downward to the front end facing the front plate 16 of the main body 11 of the holder 20. switch actuator 2
4 is equipped. Further, a roller 26 is provided at the lower end of the support rod 25 fixed downward to the rear end of the holder 20, and furthermore, the support rod 25
A detection plate 27 is installed on the upper part of the sensor. When the detection plate 27 enters an optical sensor 28 consisting of a light emitting body and a light receiving body arranged in the main body 11,
The optical sensor 28 is connected to pressure rollers 41 and 4, which will be described later.
A crimping signal is emitted to a crimping actuator 44 such as a solenoid.

The guide rod 30 near the rear plate 13 and the front plate 16
A spring receiver 31 and a stopper 37 are formed in the shape of a flange at the end. In the guide rod 30, between the cartridge holder 20 and the spring holder 31, in order from the front to the rear, a weak coil spring 32 for operating the pressure roller, a slider 33, and a strong coil spring 34 for operating the cutter. is installed. A collar 35 is formed at the rear end of the slider 33. A stopper 36 for locking the collar 35 of the slider 33 is arranged on the main body 11 of the box 10. After the slider 33 slides forward under the force of the coil spring 34 for actuating the cutter and the collar 35 comes into contact with the stopper 36, the cartridge holder 20 is loaded with the force of the coil spring 32 for actuating the pressure roller. Due to the bias of the coil spring 32, the cartridge holder 20 slides and comes into contact with the stopper 37.

Reference numeral 40 denotes a feed roller disposed in the main body 11 of the box 10 near the film feed opening 19. The feed roller 40 is driven by a motor (not shown). 41,
41 is a pressure roller that cooperates with the feed roller 40. The pressure rollers 41, 41 are attached to the support frame 4.
2, and the support frame 42 is attached to the lid 12.
A supporting member 43 is connected to the lower end of an actuator 45 of a crimping actuating member 44 such as a solenoid provided on the lower surface of the top plate 14 . The pressing member 44 feeds the pressing rollers 41, 41 and presses them against the roller 40 in response to a pressing signal from the optical sensor 28. Guide plates 46 and 47 are arranged on the inlet and outlet sides of the feed roller 40, respectively.

50 is a cutter disposed between the cartridge holder 20 and the feeding roller 40. As shown in FIG. 3, the cutter 50 is composed of a bellcrank-shaped upper blade 51 and a fixed lower blade 52. The upper blade 51 is rotatably attached to a support member (not shown) by a pivot pin 53. The upper end of a crank rod 55 that can be expanded and contracted is connected to the lower end of the bell crank-shaped upper blade 51 by a connecting pin 54, and the lower end of the crank rod 55 is attached to a crank disk 57 by a crank pin 56, and the crank A disk 57 is attached to an output shaft 58' of a motor 58 with a speed reducer. The crank rod 5
5, a crank pin 56, and a crank disk 57 constitute a crank mechanism. 59 is a micro switch installed in parallel with the motor 58;
9' is a micro switch lever.

60 is a notched guide disk attached to the output shaft 58' of the motor 58. As shown in FIG. 4, the outline of the notched guide disk 60 includes a circumferential surface 61 obtained by cutting a disk into a fan shape and a notched surface 6 facing in the radial direction.
2, 63 and a circumferential surface 64 of the boss portion. At the peripheral edge where the cutout surface 62, which is on the forward side in the direction of rotation shown by arrow a, intersects with the circumferential surface 61, there is a groove extending from the front surface 65 of the notch guide disk 60 facing the cartridge holder 20 to the rear surface 66. A cam surface 67 is carved in a wedge shape.
When the cartridge holder 20 slides against the bias of the cutter actuating coil spring 34, a roller 26 provided at the rear end of the cartridge holder 20 with a support rod 25 starts the operation of the cutter 50. The cam surface 67 is configured to enter the movement trajectory of the cam surface 67 immediately before the movement of the cam surface 67 .

Note that the pressure rollers 41, 41 may be constantly pressed against the feed roller 40. In this case, the detection plate 27, the optical sensor 28, the coil spring 32 for operating the pressure roller, the slider 33, the stopper 36, the pressure operation member 44, and the actuator 45 are not necessary.

Next, the operation of the present invention will be explained. Open the lid 12, pull out the end of the unprocessed film inside the cartridge P using a dark bag, connect the base end of the shot leader to the end, and then feed the tip of the shot leader to the roller 40 and the pressure roller. 41
, load the cartridge P into the loading recess 21 of the cartridge holder 20, close the lid 12, hook the stopper 18, and then insert the cartridge P into the loading recess 21 of the cartridge holder 20.
Complete loading. At this time, the slider 33 is pressed forward in the direction opposite to the film feeding direction by the bias of the cutter operating coil spring 34, and the flange 35 of the slider 33 abuts against the stopper 36, causing the slider 33 to move forward. 33 is in an immobile state. The cartridge holder 20 is pushed forward by the urging force of the coil spring 32 for actuating the pressure roller, and is brought into contact with the stopper 37 and becomes immovable. The upper blade 51 of the cutter 50 is in the raised position, and the notch portion of the notch guide disk 60 is positioned so that the roller 26 can enter into the movement locus of the cam surface 67. The cartridge P is elastically pressed by a leaf spring 12' attached to the lower surface of the top plate 14 of the lid 12. Micro switch 59 is open. Next, when the motor 58 with a speed reducer is connected to a power supply (not shown) and the feed roller 40 is started by the motor (not shown), the shot leader is sent out and connects the film feed port 19 and the film insertion port (not shown) of the developing device section 1. Then, it is sent into the developing device section 1. Although not shown, when the perforation provided in the shot leader engages with the conveyance sprocket provided in the developing device section 1,
The short reader is transported, and the film f is fed from the cartridge P into the developing device section 1 by the transport of the short reader, and development processing is performed. When a load is applied to the film f during the development process, the cartridge holder 20 slides in the film feeding direction, that is, backward, against the bias of the weak coil spring 32 for operating the pressure roller. At this time, the collar 35 of the slider 33 is pressed against the stopper 36 by the strong bias of the coil spring 34 for actuating the cutter. Patrone holder 20
When the main body 1 slides backward, the detection plate 27 installed on the support rod 25 at the rear end of the holder 20
1, the optical sensor 28 presses the pressure rollers 41, 41 into the pressure-bonding actuating member 44.
emits a crimping signal. This crimping signal causes the actuator 45 of the crimping actuating member 44 to operate.
5 is operated by the pressure roller 4 via the support frame 42.
1 and 41 are pressed against the feed roller 40. This crimped state is maintained until the film is cut.
The detection plate 27, the optical sensor 28, the coil spring 32 for operating the pressure roller, the slider 33, the stopper 36, the pressure operation member 44, and the actuator 45
etc., if omitted, the pressure roller 41,
41 is always pressed against the feed roller 40.

Next, when the film f is fed out and the end of the film appears from the cartridge P, the cartridge holder 20 is strongly pulled by the film f, so that the cartridge holder 20 is biased by the coil springs 32 and 34. It resists and slides backwards. As the cartridge holder 20 slides, the roller 26 installed at the lower end of the support rod 25 fixed to the rear end of the holder 20 enters into the movement locus of the cam surface 67 of the notched guide plate 60. A switch actuator 24 installed at the lower end of the support rod 22 fixed to the front end of the holder 20 pushes the micro switch lever 59' to close the micro switch 59. When the micro switch 59 is closed, the motor 58 is started, and the notched guide disk 60 and crank disk 57 mounted on the output shaft 58' of the motor 58 are rotated.

Due to the rotation of the notch guide disk 60, the cam surface 67 moves in the direction of arrow a, and the cam surface 67 first moves in the direction of arrow a.
The roller 26 that is within the movement locus of the cam surface 6
Rear surface 6 of the notched guide disk 60 guided by 7
6, the cartridge holder 20 moves in the film feeding direction via the roller 26 and the support rod 25 against the bias of the coil springs 32 and 34, so that the photographic film f becomes slack.

As the crank disk 57 rotates, the upper blade 51 of the cutter 50 is operated by the crank mechanisms 54 to 57 including the crank disk 57 to cut the photographic film f. By forming the cam surface 67 and the rear surface 66 so that the roller 26 rolls on the rear surface 66 of the notch guide disk 60 from the start to the end of cutting the photographic film, the photographic film f can be cut. There is slack from the beginning to the end of cutting,
The biasing force of the coil springs 32 and 34 does not act on the photographic film f. This prevents the edges from tearing and the film from twisting.

In addition, the above-mentioned switch actuator 24 and detection plate 2
7. It goes without saying that the optical sensor 28 and the like may be replaced with other detection members.

The present invention is constructed as detailed above, and uses a roller attached to a cartridge holder, which is biased by a coil spring in the opposite direction to the film feeding direction, to cut the cutter from the start to the end of the film cutting. The cartridge holder is engaged with the rear surface of the notch guide disk attached to the output shaft of the operating motor, and the cartridge holder is moved in the film feeding direction to loosen the film, thereby preventing the cut edge of the film from tearing. The film will not become distorted or the film will meander. Since no film chips are produced and no damage is caused to other mechanical parts, daily inspections are not required. moreover,
The mechanism consisting of rollers and notched guide disks for creating slack in the film is simple and easy to manufacture. Excellent practical effects such as these can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of an automatic processor equipped with the photographic film cutting device of the present invention in a film insertion box, and FIG. 2 shows the inside of the film insertion box. 3 is an elevational view of the cutter, and FIG. 4 is a perspective view of the notch guide disk. 10: Film insertion box, 19: Film feeding port, 20: Cartridge holder, 22:
Support rod, 24: Detection member, 25: Support rod, 26:
Roller, 30: Guide rod, 34: Coil spring for cutter operation, 40: Feed roller, 41: Pressure roller, 50: Cutter, 54-57: Crank mechanism, 58: Motor, 58': Output shaft, 59: Micro switch , 60: notch guide disk, 66: rear surface of notch guide disk, 67: cam surface.

Claims (1)

[Scope of utility model registration request] A slideable cartridge holder and a coil spring for actuating the cutter that biases the cartridge holder in the opposite direction to the film feeding direction are attached to a guide rod provided in the film feeding direction in the film insertion box, and a slider is attached to the guide rod provided in the film feeding direction. A feed roller and a pressure roller cooperating with the feed roller are arranged nearby, a cutter driven by a motor is arranged between the cartridge holder and the feed roller, and the cartridge holder biases a coil spring for actuating the cutter. When sliding against the front end of the cartridge holder, the switch of the motor is closed via a detection member installed at the front end of the cartridge holder, and the film is cut with a cutter, and the notched disc attached to the output shaft of the motor a cam surface for slightly moving the cartridge holder against the urging force of the cutter actuating coil spring in the circumferential direction at the peripheral edge of the notch surface on the forward side;
and a roller is formed extending from the front surface to the rear surface of the cutout disk, and a roller is provided at the rear end of the cartridge holder so as to enter into the movement trajectory of the cam surface immediately before the cutter is operated, and starts cutting the photographic film. A photographic film cutting device for a photographic film feeding device, characterized in that said roller is engaged with the rear surface of a notch guide disk from the time to the end to cause slack in the photographic film.