JPH061335B2 - Film feeding device for film image reading device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a film image reading apparatus such as a microfilm for feeding and winding a cartridge type roll-shaped film for retrieval of a film image. It relates to the device.

BACKGROUND OF THE INVENTION Generally, as shown in FIG. 3, a cartridge-type microfilm is provided with a square hole 3 at the center of a reel 2 around which a roll-shaped microfilm is wound. The square hole 3 is fitted into the rotation angle shaft portion 5 of the film feeding device provided in the cartridge, and the cartridge is set in the microfilm reading device. Then, by rotating the square shaft portion, the reel is rotated to convey the film, and the leading end of the conveyed film is taken up by the take-up reel arranged in the apparatus. High speed rewinding of the film is performed by driving the take-up reel in the direction of unwinding the film from the cartridge, and rewinding the film by reverse rotation drive of the angular shaft portion.

On the other hand, when such a microfilm cartridge is set in the reading device main body, the angular hole and the angular shaft portion of the reel may not have the same relative rotation angle as shown in FIG. Since there are many, the square shaft part can be moved along its axial direction, and it is always urged toward the cartridge side by a spring etc., and the square shaft part is rotated and fits while pressing the square shaft part to the square hole of the reel. I am trying to let you.

By the way, the rotation of the angular shaft portion for fitting the angular shaft portion into the square hole of the reel is generally performed at high speed because the mating timing cannot be obtained by high-speed rotation such as when searching. Before, the angular shaft portion was rotated at a low speed for a predetermined time, and this predetermined time was applied for fitting the angular shaft portion and the square hole.

However, if the center of the square shaft portion and the center of the square hole of the reel are displaced relative to each other, the square shaft portion may not fit into the square hole within the low speed rotation time of the square shaft portion.

Therefore, since the reel does not rotate, the reel cannot be searched, and the end face of the square hole of the reel may be scraped due to the high speed rotation of the square shaft.

[Object of the Invention]

The present invention has been made to solve such conventional problems, and provides a film feeding device of a film image reading device capable of reliably rotating a reel and preventing scraping of the reel. That is the purpose.

[Outline of Invention]

A film feeding device of a film image reading apparatus according to the present invention includes an axially movable main shaft that is urged and inserted into a reel driving fitting portion of a film cartridge to rotationally drive the reel, and the main shaft. A spindle position detecting means for detecting whether the reel is fitted in the center fitting portion, and a control means for controlling rotation of the spindle based on a signal from the spindle position detecting means. It is what

Example of Invention

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a schematic view showing an embodiment of a film feeding apparatus according to the present invention.

In the figure, reference numeral 1 denotes a roll-shaped micro film, which is wound around a reel 2. A square hole 3 is provided at the center of the reel 2, and the square hole 3 is fitted in the tip square shaft portion 5 of the main shaft 4, and is formed on the rear end surface of the square shaft portion 5. The abutting surface 6 is inserted. Further, the tip end portion of the square shaft portion 5 is formed in a tapered shape so that it can be easily fitted into the square hole 3 of the reel 2. Reference numeral 7 denotes a hollow joint that transmits the rotation of the drive motor 8 to the main shaft 4.
The rear end side is inserted so as to be movable in the axial direction, and the main body 4 is biased toward the reel 2 side by a compression spring 9 installed therein. Further, a long hole 10 is bored in the peripheral wall of the joint 7 along the axial direction thereof, and a pin 11 is attached to the main shaft 4 through the long hole 10 to allow the main shaft 4 to move in the axial direction. At the same time, the main shaft 4 is connected to the joint 7
It is possible to rotate together with. Reference numeral 12 is a rotatable roller that supports the reel 2 biased by the elastic force of the compression spring 9, and is attached to the side wall 13 of the storage portion for storing the microfilm cartridge, and the cartridge is inserted from above the storage portion. In the set state, it comes into contact with the center of the reel. 14 is a fulcrum pin 15
A main shaft releasing arm that is swingable about the one end of the main shaft 4. One end of the main shaft 4 is disposed in close proximity to the front end surface of the flange portion 16 formed on the main shaft 4, and the engagement pin 17 is provided at the rear end. Has been. Reference numeral 18 denotes a spindle releasing solenoid connected to the spindle releasing arm 14, which is drive-controlled by a control circuit 19 and swings the arm 14 counterclockwise when an ON signal is input from the control circuit 19. When the arm 14 swings counterclockwise, as shown in FIG. 2, the tip portion of the arm 14 engages with the flange portion 16 of the main shaft 4, and the main shaft 4 is axially rearwardly moved through the flange portion 16. The film cartridge is moved to the end side so that the film cartridge can be inserted, and when the cartridge is replaced, the square shaft portion 5 is pulled out from the square hole 3 of the reel 2 so that the cartridge can be pulled out. Further, an engagement pin 17 provided at the rear end of the arm 14 engages with a notch of a latching arm described later so that the spindle releasing arm 14 can be held at that position. Reference numeral 20 denotes a latch arm that is swingable around a fulcrum pin 21, and is constantly urged clockwise by a spring 22. When the main shaft releasing arm 14 swings counterclockwise, the engaging pin 17 slides on the side edge and engages with the notch 24 formed on the swing side 23. To do. Reference numeral 25 is a latch release solenoid, and when an ON signal is input from the control circuit 19, the latch arm 20 is swung counterclockwise against the elastic force of the spring 22, and the notch of the latch arm 20 is provided. The latch 24 and the engaging pin 17 of the main shaft releasing arm 14 are released so that the angular shaft portion 5 of the main shaft 4 can move toward the angular hole 3 of the reel 2. Reference numeral 26 is a main shaft position detector composed of a micro switch, in a state where the main shaft 4 is pushed out toward the reel 2 as shown in FIG. 1, that is, the angular shaft portion 5 of the main shaft 4 is a square hole of the reel 2. 3, the switch actuating piece 27 rides on the flange portion 16 of the main shaft 4 to switch off, and the Sn signal indicating that the square shaft portion 5 is fitted in the square hole 3 is sent to the control circuit. It outputs to 19. Further, as shown in FIG. 2, the main shaft 4 has a joint 7
In the state of moving to the side (hereinafter referred to as the standby state), the engagement with the flange portion 16 is released, and the output of the Sn signal is stopped.

At the time of mounting the microfilm cartridge, the spindle 4 is in the standby state, and the spindle releasing solenoid 18 is in the OFF state.

Next, the operation of the control circuit 18 will be described based on the flowchart shown in FIG.

[S-1] A search command for a desired film image is received by a keyboard or the like.

[S-2] An ON signal is output to the latch release solenoid 25 to swing the latch arm 20 to release the latch of the spindle release arm 14 in the standby state. As a result, the angular shaft portion 5 of the main shaft 4 is driven by the elastic force of the compression spring 9 to reach the reel 2
It is pressed against the square hole 3 of. At this time, the spindle 4 and the reel 2
FIG. 3 shows the relationship with the square hole 3.

[S-3] The motor 8 is driven at a low speed in the film winding direction. That is, the slack of the roll film wound on the reel 2 is removed, and the angular shaft portion 5 of the main shaft 4 can be easily inserted into the angular hole 3 of the reel 2.

[S-4] Receive a signal from the spindle position detector 26.
If the Sn signal is output from the spindle position detector 26, the process proceeds to step 5, and if the Sn signal is not output, the process proceeds to step 6.

[S-5] Start the search operation. In this search operation, the motor 8 that has been rotating at a low speed is rotated at a high speed in the same direction for a predetermined time to quickly remove the slack of the film, and then the leading end of the film 1 is sent out from the reel 2 by a known film sending means. The film is conveyed to the take-up reel disposed inside the reading apparatus main body and taken up by the take-up reel, and the film is conveyed to the take-up unit side at the time of retrieval, by driving the take-up reel to the reel 2 side. Motor 8 for transportation
Is performed by driving the spindle 4. Then, the film is searched by these conveying means and the known film frame detecting means.

[S-6] A waiting time T is created by a fixed time timer.
Note that this timer is of a type that is not reset when it starts.

[S-7] It is detected whether the waiting time T has been reached. If the waiting time T has not been reached, the process returns to step S-3, and steps S-3, S-4, S are performed until the square shaft portion 5 of the spindle 4 is fitted and inserted into the predetermined position of the square hole 3 of the reel 2. The routine of -7 is repeated, and if the signal Sn is not output from the spindle position detector 26 within the predetermined time T, the process proceeds to step 8.

[S-8] The drive of the motor 8 is stopped.

[S-9] Display an error. The display of the error is displayed on the display unit provided in the operation unit of the reading device main body. With the above, the program ends, and when an error occurs, the trouble of the cartridge is corrected again and the search command is issued again.

As described above, according to this embodiment, the angular shaft portion 5 of the main shaft 4 is
Is correctly inserted into the square hole 3 of the reel 2 and fitted,
Since it is monitored by the spindle position detector 26, for example, when the slack of the film is large, the movement of the reel in the microfilm cartridge is bad, when the cartridge is loaded upside down, or in the square hole of the reel. If the spindle is not fitted into the square hole of the reel due to low speed rotation of the spindle due to foreign matter, etc., the operation of the next step is prevented so that the fitting state remains incomplete. High-speed rotation is not performed, and it is possible to prevent scraping of the reel square holes. Furthermore, if the main shaft is fitted, the next step can be immediately performed, so that there is an effect that a quick search operation with no time loss can be obtained.

In the above embodiment, the center fitting portion of the reel is a square hole and the tip of the main shaft is a square shaft. However, the present invention is not limited to this, and for example, as shown in FIG. It may be one.

Further, whether or not the spindle is correctly inserted and fitted in the fitting hole of the reel is detected by the spindle position detector 26 including a micro switch, but it is detected in a non-contact manner by using the light receiving element and the light emitting element. You may

Further, in the above embodiment, since the film cartridge is set from the direction orthogonal to the axial direction of the main shaft, the main shaft 4 is retracted rearward by the two solenoids and the link mechanism, and the latch is released at the time of retrieval. However, the present invention is not limited to this type, and may be a type in which the film cartridge is mounted in the axial direction of the main shaft.

〔The invention's effect〕

As described above, according to the present invention, the rotation of the spindle is controlled by detecting whether or not the spindle is fitted in the fitting portion of the reel. If the spindle is not properly inserted and fitted, it is possible to stop the rotation of the spindle, and it is possible to prevent scraping of the reel due to the rotation of the spindle. The effect that it can be transferred is obtained.

[Brief description of drawings]

1 and 2 are schematic views showing an embodiment of a film feeding apparatus according to the present invention. FIG. 1 shows a state where a spindle is fitted on a reel, and FIG. 2 shows a spindle pulled out from the reel. It shows the state. FIG. 3 is a plan view showing a state in which the relative rotation angle between the angular shaft portion of the spindle and the angular hole of the reel is deviated, FIG. 4 is a flowchart, and FIG. 5 shows another fitting structure of the spindle and the reel. It is a schematic diagram showing. 1: Micro film 2: Reel 3: Square hole 4: Main shaft 5: Square shaft part 6: Abutting surface 7: Joint 8: Drive motor 9: Compression spring 10: Long hole 11,21: Pin 12: Roller 13: Side wall 14 , 20: Arm 15: Support pin 16: Flange part 17: Engagement pin 18, 25: Solenoid 19: Control circuit 22: Spring 23: Oscillating piece part 24: Notch part 26: Spindle position detector

Claims (1)

[Claims] 1. A spindle movable in an axial direction, which is urged to be inserted into and fitted to a driving fitting portion of a reel of a film cartridge, and which is rotatably driving the reel, and the spindle is fitted to a fitting portion of the reel. A film for a film image reading apparatus, comprising: a spindle position detecting means for detecting whether or not they are fitted, and a control means for controlling rotation of the spindle based on a signal from the spindle position detecting means. Feeding device.