JP2904074B2 - Film rewinding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an efficient, automatic and miniaturized film rewinding device for rewinding a film from a new type of film cartridge to an intermediate cartridge.

[0002]

2. Description of the Related Art As a cartridge for storing a film, a so-called patrone of a cochlear shape, which is conventionally used with a terminal of the film slightly extended, is generally used.
However, such conventional ones have various problems when used,
Recently, a new type of cartridge has been disclosed in US Pat. No. 5,347,334 or US Pat. No. 5,031,8.
No. 52 has been proposed.

[0003] Although this new type of film cartridge is still cochlear in appearance, the cartridge case is downsized and a split type is adopted, and the film wound on a spool is opened as needed to open the case. And can be taken out freely. In addition to storing the unexposed raw film, it is considered that the negative film can be stored in the cartridge even after developing and printing after photographing.

[0004] Before the film is used for photography, the entire film is stored in a cartridge, the outlet for feeding out the film is completely closed by a lid which can be freely opened and closed, and at the time of photography, the lid is opened and the spool is rotated. The leading end of the film is fed out of the cartridge outlet by the spool output (thrust).

At the rear end of the film, a hole at the rear end of the film is locked by a locking claw projecting into a slit provided in the spool core, thereby securely fixing the film to the spool. or,
An edge material is provided on the spool flange for feeding the film, and between the flange and the inner wall of the case, the film is unexposed, exposed, developed, etc., and a bar code is displayed to prevent double exposure. For example, an arc-shaped disk plate or the like is provided.

The above-mentioned new type film cartridge M
This will be briefly described with reference to FIGS. This film cartridge M is known from, for example, the above-mentioned U.S. Pat. No. 5,347,334, and the original configuration is referred to in detail.

As shown in FIG. 15, the film cartridge M comprises a cochlear-shaped cartridge case 100 having a built-in spool 101 for film winding. The case 100 is divided into two halves as shown in FIG. Is different from the conventional patrone in that an opening / closing door 102 is provided at the film outlet. A rotation shaft is provided at one end of the spool 101 and the opening / closing door 102, and slots 103 and 104 are provided for connecting power shaft ends for transmitting power for rotating the respective rotation shafts. Further, a fan-shaped indicator plate 105 is provided on the same one end as the outer side of the flange of the spool 101, and display holes a to d indicating a film state depending on where the fan-shaped portion of the indicator plate 105 is located. Are bored in the case end plate 106. The display hole a indicates an unexposed state (unphotographed), b indicates an unexposed state partially using the film, c indicates an exposed state (undeveloped), and d indicates a developed state. Any of the above states can be confirmed by the white fan-shaped portion of the indicator plate 105.

[0008] As shown in FIG.
The film F wound around the spool shaft 101b of No. 01 is shielded from light by closing the film outlet of the film case with the opening / closing door 102 while the entire length is wound. When rotated, the film F is fed out only by the rotation.

When winding the film F around the spool 101, as shown in FIG. 16B, the end of the film F is inserted into the slit 107 of the spool shaft 101b, and the hole h near the end is engaged with the engaging claw. Wrap with hooking on 108. When the entire length of the film is wound on the spool 101, the notch 109 at the beginning of the film is stopped by being hooked on the skirt of the flange 101c of the spool.

On the premise of the above-described film cartridge, when a film stored in such a cartridge is developed and printed, the film unwound from the film cartridge is directly sent to a developing device or a printing device. Since the trailing end cannot be separated from the spool, the feeding is stopped at the end of the film, and the developing process cannot be performed efficiently and automatically. Therefore, as one method for efficiently performing the development processing without stopping the processing, an intermediate cartridge is prepared in advance, and the film is once wound around the intermediate cartridge.

A film unwinding device for winding a film around such an intermediate cartridge or a winding portion corresponding to the intermediate cartridge is known from Japanese Patent Application Laid-Open No. Hei 5-232633. In this unwinder, a film cartridge storage section and a film take-up section are provided at a predetermined distance, a film feed roller and a film guide are installed between them, and separate drive motors are attached to the film cartridge and the feed roller, respectively. Have been.

The leading end of the film is fed by rotating the spool in the cartridge by the motor for the film cartridge and sending it out. When the leading end of the film reaches the feed roller, the film is sent to the winding section by the motor for the feed roller. When the motor is fed to the rear end of the film, each motor stops. However, even after the motor stops, the spool slightly rotates in the film feeding direction due to the inertial force of the flywheel provided between the spool and the motor for the film cartridge.

Therefore, the rear end of the film is displaced with respect to the spool, whereby the hole at the rear end of the film is disengaged from the hook of the spool. Thereafter, when the motor of the feed roller is driven again to feed the film until the film comes off the feed roller, the film wound by the winding unit can be removed from the winding device.

A similar device is also disclosed in Japanese Patent Application Laid-Open No. Hei 6-130633, but in the separation device of "the locking device and separation device for photographic film" in this publication, the release plate is moved from the film outlet of the cartridge case. The rear end of the film that is inserted and engaged with the locking claw in the slit of the spool shaft is removed from the locking claw.

[0015]

The above-mentioned new type of film cartridge has been developed as a type capable of automatically feeding a film, and is used in a state where the leading end of the film slightly protrudes from the patrone as in the prior art. It is not premised that the entire length of the film, whether exposed or unexposed at the start of use, is contained in the cartridge as described above. Therefore, it is assumed that the leading end of the film is fed by rotating the spool.

When rewinding a film of a new type of film cartridge on the premise of such a film feeding method to an intermediate cartridge, the film fed by rotating the spool of the film cartridge rotates the spool of the intermediate cartridge to another spool. It is driven by an independent motor and re-wound onto its spool.When the film is near the end, insert a tool into the film cartridge to separate the end of the film locked on the protrusion of the spool, and remove the terminal from the spool. The separation method is generally used when the film is automatically rewound.

However, such a method of rewinding and separating the film has the following problems. First, a drive unit that drives a tool for separating a film from a film cartridge may be a drive unit that is independent of a drive unit of a film cartridge or an intermediate cartridge, or a system that also serves as a drive unit of a film cartridge, for example.

However, since the film separating tool is driven near the end of the film feeding of the film cartridge, it is preferable to drive the film separating tool in conjunction with the rotation of the spool of the film cartridge.

However, the above-mentioned tool has a small layout configuration,
It is advantageous to adopt an arc-moving type when making compact, but in this case, since the film feeding direction of the film cartridge and the insertion direction of the tool are opposite, the rotation direction of the arc movement of the tool is a problem. Become.

Further, as described above, when the rotational movement of the tool is driven by a common drive unit in conjunction with the rotation of the spool of the film cartridge, if the tool starts an arc movement near the end of the film feeding, the movement is started. May affect the feeding of the film, possibly damaging the film.

The present invention takes into account the problem of the above-described apparatus for rewinding a film into an intermediate cartridge using a new type of film cartridge, and makes the tool for separating the film end from the film cartridge into an arc-shaped tool. A small, compact and highly efficient film that rotates in the direction opposite to the film feed direction of the cartridge, shares a drive unit, and includes a rotation transmission mechanism to the tool, and minimizes the distance between the two cartridges. It is an object to provide a rewinding device.

[0022]

According to the present invention, as a means for solving the above-mentioned problems, a housing portion for a film cartridge and a winding portion for an intermediate cartridge are disposed at a predetermined distance in a main body case having a cover plate which can be opened and closed. The film guide that guides the film fed from the film cartridge in the storage unit to the winding unit, the drive unit that rotates the spools of both cartridges independently, and the film end when winding the film to the intermediate cartridge. With a tool for separating from the spool of the film cartridge,
The above-mentioned tool is arc-shaped so that it can be inserted into the film cartridge by an arm that rotates in the opposite direction to the spool of the film cartridge, and also uses a drive unit for rotating the spool of the film cartridge to rotate the arm so that it can swing freely. The film guide has an arc-shaped tool guide for guiding the tool, and is set to a minimum length including the tool guide so that the distance between the storage section and the winding section is minimized. The film rewinding device thus configured was used.

In the film rewinding apparatus of the present invention having the above-described structure, both cartridges are inserted, and the respective drive units are driven to rewind the film into the intermediate cartridge. When the film is unwound from the film cartridge, the leading end is fed by rotating the spool of the film cartridge. When the leading end reaches the intermediate cartridge, the leading end is wound on the spool of the intermediate cartridge by a drive unit that drives this spool.

When the winding start end of the film starts to be wound, the intermediate cartridge is wound while pressing the winding start end in a free state with a member that presses lightly. This is because the terminal can be freely detached from the spool when the terminal is fed to a developing machine or the like.

When most of the film is wound into the intermediate cartridge and the terminal on the film cartridge side approaches the end, an end mark is provided on the film at a fixed length from the terminal. Starts the reverse rotation. The drive unit is provided with a rotation transmitting mechanism for transmitting the reverse rotation to the tool when the drive unit rotates in the reverse direction, whereby the tool rotates in the direction opposite to the direction in which the film of the film cartridge is fed.

The tool is guided in the tool guide by the above rotation, and is inserted from the opening of the film guide, and the end of the film locked by the locking portion of the spool at its tip is cut off from the spool. Thereafter, the film is wound around the intermediate cartridge by the power of the drive unit on the intermediate cartridge side.

The rotation transmitting mechanism swings the tool by the reverse rotation of the drive unit. The tool is inserted into the film cartridge for separating the film, and after the film is separated, the tool is returned to the original position. To drive the tool. Therefore, when the tool returns to the initial standby position, the driving unit is stopped.

Such a tool is formed in an arc shape, and has an advantage that it is configured so as to swing in an arc motion in order to make the entire apparatus compact and requires a minimum space. In addition, if a tool guide for guiding such an arc-shaped tool is formed integrally with the film guide, the length of the film guide can be further reduced to a minimum length, and a feed roller need not be provided in the middle. This is advantageous for miniaturization and downsizing of the device.

As described above, when the drive unit for feeding the film from the film cartridge is shared with the tool rotation transmission mechanism, a one-way rotation transmission means is provided on a rotation shaft that rotationally drives the spool of the film cartridge.
When the drive unit rotates in the forward direction, the film is fed out, and when the drive unit rotates in the reverse direction, the rotating shaft is free, and the reverse drive force is transmitted to the tool rotation transmission mechanism so that the drive unit can be shared. Is preferred.

Thus, the rotation axis of the spool of the film cartridge continues to rotate forward even if the driving unit rotates in reverse to drive the tool, so that the film can be continuously fed to the end.

In order to break the nail provided on the end plate of the film cartridge by using the movement of the tool rotating to separate the film from the spool of the film cartridge, the nail can be freely folded according to the rotation movement of the tool. It is preferable to adopt a configuration.

The above-described nail folding mechanism ensures that when the nail of the target film cartridge has not been folded irrespective of the developed film, the nail folding is performed in order to prevent a malfunction in a subsequent processing step. It is advantageous to perform.

Further, in order to easily replace the tool with the arm on which the tool is mounted, the tool is detachably attached to the arm by means of a locking portion which is adjustable in position with an elastic member at the tip of the arm for rotating the tool. It is good to attach it.

This is advantageous when the tool is damaged or worn over a long period of use and needs to be replaced.

Other detailed features will be described in the following embodiments.

[0036]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of the film rewinding device, FIG. 2 is a plan view including a cross section from which only a cover plate is removed, and FIG. 3 is a cross-sectional plan view showing a mechanical portion provided on an intermediate bottom plate. As shown in FIG. 1, a lid plate 2 is provided on the upper surface of the front half of the main body case 1. When the lid plate 2 is opened, the film cartridge storage unit 3 and the intermediate cartridge winding unit 4 are separated by a predetermined distance. And a film guide 5 is provided between them.

As shown in FIG. 4, the cover plate 2 is formed by a front cover plate 2a and a back cover plate 2b so as to be doubled, and the knob plate 6 having the knob 6a is moved by the width of the opening 7 therebetween. It is freely inserted. On the back side of the knob plate 6, a knob 6
a is pulled to the state shown in FIG.
An engagement piece 6b for locking while being closed is attached. The cover plate 2 can be opened and closed by an opening and closing arm 10 around a support point 9 in FIG.

On the back surface of the cover plate 2, as described later,
Locking pieces 11, 12 for holding the shoulder of the intermediate cartridge N so as not to move are provided so as to protrude through the opening 2c of the back cover plate 2b. A pin 13 for opening and closing the lid of the film inlet of the intermediate cartridge N also penetrates and protrudes from the back surface of the knob plate 6.

As shown in FIG. 2, the pin 14 is engaged with the two long holes 6c, and the knob plate 6 can be moved between the front and rear positions shown by the solid line and the two-dot chain line within the distance of the long holes 6c. A gear mechanism 15 for opening and closing the opening and closing door of the film cartridge M (see FIG. 5) is provided at the right end of the knob plate 6. The gear mechanism 15 includes a rack 15a, a pinion 1
5b and a small gear 15c.

Further, a substantially triangular fixed plate 16 is provided on the back cover plate 2, and the right end protruding piece 6d of the knob plate 6 is engaged with one of the plurality of triangular grooves to move the knob plate 6. Is gradually suppressed. In addition, 1a in FIG. 2 is a display lamp.

As shown in FIG. 3, the distance between the axes of the film cartridge M and the intermediate cartridge N is set to the minimum distance (about 90 mm) for a reason to be described later, and the minimum length of the film guide 5 is set between them. Is provided. As can be seen from the drawing, the film guide 5 has no feed roller.

The film guide 5 includes a fixed guide member 5a.
And a rotatable guide member 5b. The pressing force for closing the cover plate 2 is adjusted by a mechanism (not shown).
The film is fed into the gap space 5c between both members in the closed state as shown in the figure, and the film F is guided at the upper and lower ends. 17a is an infrared sensor, and 17b is an LED type film sensor.

Reference numeral 18 denotes a holding pillar for opening and closing the cover plate of the intermediate cartridge N, the details of which are shown in FIG. The holding pillar 18 folds a plate having two forks into an L-shape, and the deep groove 19a above the column 1a of one of the forks receives the pin 13 described above.

Incidentally, the lower end of the intermediate cartridge N is not held by the bent bottom plate 18a of the holding pillar 18, but is supported by a member at the lower end of a cartridge housing portion (not shown). Cover plates n and n 'at the film entrance of the intermediate cartridge N are sandwiched between the sandwiching pillar 18 and the column 19,
When the pin 13 is moved by pressing the knob 6a, the cover plate n 'is pushed open by the pressing force, and the film F can be received. p and p 'are holding points on the fixed case end of the cartridge M.

Also, the small gear 15c of the gear mechanism 15 described above.
Is engaged with a rotating shaft b for opening and closing the cover plate c of the film cartridge M as shown in the figure, and converts the force for moving the knob 6a into a rotational force to open and close the cover plate c. .

As shown in FIG. 3, a release guide 21 is provided in the film guide 5 so that a tool 20 for separating the end of the film when the film is fed from the spool in the film cartridge M can be inserted.
The release guide 21 is formed in an arc shape, and the leading end of the tool 20 is inserted into the film cartridge M from a position slightly before the start end of the film guide 5 and substantially parallel to the film entrance end of the film guide 5 to separate the film end from the spool. It is provided to make it possible.

The radius of the arc of the release guide 21 is such that the tip of the tool 20 contacts the backside of the film when the tool 20 is inserted into the film cartridge M and is wound on the inner spool from the film outlet of the film cartridge M. The release arm 22 has a minimum diameter of the arc which is inserted tangentially to the vicinity of the drawer.
Set the radius of 22p is a rotation center of the release arm 22.

The connection end of the tool 20 to the release arm 22 is detachably provided to the release arm 22 by a pin 23 and a spring mechanism (not shown). This is to facilitate replacement of the tool 20 during maintenance and inspection.

The release arm 22 rotates around the rotation center 22p, and its rotational movement swings within a predetermined angle range. The release arm is engaged with an eccentric arm 25 by a pin 24 near its center, and the eccentric arm 25 is rotatably mounted on a gear 27 by a pin 26.

Another gear 28 is engaged with the gear 27, and a belt 30 is hung on a pulley 29 coaxial with the gear 28, and the belt 30 is driven to rotate by an output pulley 32 of a motor 31. The belt 30 is also engaged with a pulley 33 provided coaxially with a rotating shaft 34 that drives the spool of the film cartridge M to rotate, whereby the film F can be fed from the film cartridge M.

On the other hand, on the winding section 4 side of the intermediate cartridge N for rewinding the unwound film, a rotary shaft 35 for applying a rotational force to the intermediate cartridge N is provided, and a pulley 36 coaxial with the rotary shaft 35 is provided. , And a belt 39 is rotated by an output pulley 38 of a motor 39 provided at a position opposite to the rotating shaft 35.

The details of the rotary drive system described above are shown in the perspective view of FIG. 6, and the drive system will be more clearly understood with reference to the above description.

The above is the basic configuration of the film rewinding device of the embodiment, and the basic operation will be described below.

With the cover 2 of the film rewinding device opened, first, the film cartridge M and the intermediate cartridge N
Is inserted into the storage section 3 and the winding section 4, respectively. The cover plate 2 is closed, and the knob 6a is pulled out as described above to pull the knob plate 6.
The cover plate 2 is locked by the engagement piece 6b.

The operation of closing the cover plate 2 is simultaneously transmitted to the film guide 5, and one side of the film guide 5 can be opened and closed freely.
To close to the normal state of FIG. When the cover plate 2 is closed, the intermediate cartridge N is stably held by the locking pieces 11 and 12 on the back surface. Further, the movement of the knob plate 6 is transmitted to the film cartridge M and the intermediate cartridge N by the force transmission mechanism shown in FIG. 5, and the respective doors c and n are opened.

The above is the preparatory work up to the start of the rewinding operation of the film rewinding device, after which the rewinding operation is started. When the rewinding operation starts, the film cartridge M
The film is fed from. The unwound film is irradiated with the infrared sensor 17a to check whether the film is undeveloped or developed.

The film to be rewinded by this film rewinding device is mainly a rewinded film which is developed.
Undeveloped ones can also be re-wound. However, if the undeveloped image is irradiated with visible light, the exposed image frames will be damaged, so it is first checked whether the image is undeveloped by infrared irradiation.

If the film has been developed, the motor 3
1 is restarted, the film is fed out again, and rewinding is started. When the film is fed out and guided in the film guide 5 and its leading end reaches the intermediate cartridge N and is wound to some extent on the spool, the film is pulled by the driving force of the other motor 39 so that the intermediate cartridge N is pulled.
Rewinding is performed.

During rewinding by the motor 39 on the intermediate cartridge N, the motor 31 on the film cartridge M also rotates in the same direction to feed the film to the unwinding side.
Rewinding is performed with the film feed speed by the motor 39 on the take-up side being slightly faster than that on the pay-out side. In this case, although not shown, the rotation shaft 34 on the film cartridge side is provided with a one-way clutch, and a mechanism that is free from rotation in the opposite direction is used to reduce the film feed deviation due to the speed difference. Absorbing.

When the film is fed and the terminal approaches, although not shown, a small hole of an end mark is provided at a position at a fixed distance from the terminal, and the end mark is provided with an infrared sensor 17a and a film sensor 17b. , The motor 31 on the film cartridge side rotates in reverse according to the detection signal.

The tool 20 is started by the reverse rotation of the motor 31, travels through the arc-shaped tool guide 21, the tip of which is inserted through the film guide 5 from the door of the film cartridge M, and the tip reaches the spool. The position of the end mark, the feed speed of the film, and the moving speed of the tool are set so that the timing at which the rear end of the film appears at the spool end is the same, whereby the rear end of the film is removed from the spool by the tool 20. . FIG. 7 shows a change in the above operation.

Even if the rear end of the film comes off the spool of the film cartridge M, the film is further wound up, and the rewinding is stopped while the terminal is slightly hung on the film guide 5.

Next, the detailed structure and operation of the film rewinding device of this embodiment will be described with reference to FIGS.

First, a rotation transmitting mechanism to the tool 20 driven by sharing the power of the motor 31 of the driving unit for rotating the spool of the film cartridge M will be described with reference to FIGS. 3 and 8 to 10. I do.

As described above, the motor 31 is rotated forward (in the direction of the arrow in FIG. 3) from the spool of the film cartridge M to feed out the film F. The rotation of the rotation shaft 34 for transmitting rotation to the spool of the film cartridge M is performed. Figure 8
As shown in the figure, a one-way clutch 34 is provided between shaft systems for transmitting the rotational force of the belt 30 to the rotary shaft 34 via the pulley 33.
a is provided.

Another one-way clutch 34b is provided near the center of the rotating shaft 34. The one-way clutch 34b has an outer ring fixed to the lower end 3x of the storage portion 3 and the rotating shaft 34 is fixed. This is a one-way clutch that rotates freely in the reverse direction and prevents reverse rotation. On the other hand, the one-way clutch 34a transmits the rotation of the belt 30 in the forward direction to the rotating shaft 34, and can freely rotate in the opposite direction.

The two one-way clutches 34 as described above
The rotation force of the motor 31 is transmitted to the film cartridge M by a and b, and the spool 101 is rotated in the normal rotation direction to feed out the film F. When the end mark is detected near the end of the feeding of the film F as described above, From that moment, the motor 31 starts to reverse.

The rotation in the opposite direction is transmitted to the gear 29 via the belt 30, while the rotation shaft 29b is rotated via the clutch 29a, so that the pinion 28 and the gear 27 are rotated. The rotation of the gear 27 is in the direction of the arrow (dotted line) in FIG. 8, and when the gear 27 rotates, the pin 26 at the eccentric point rotates, whereby the arm 25 pushes the release arm 22 and the release arm 22 is centered on the pin 22p. Rotates counterclockwise.

When the release arm 22 rotates, the arc-shaped tool 20 provided at the tip thereof releases the release guide 2.
1, the tip of the tool 20 is inserted into the film cartridge 5 from the film guide 5a through the opening of the film cartridge M (see FIG. 10).

The cutting of the film from the spool of the film cartridge M at the tip of the inserted tool 20 is as described above.

When the gear 29 further rotates in the same direction after the leading end of the tool 20 separates the film F from the spool, the arm 25 pulls the release arm 22 in the rotating direction, and moves so that the tool 20 is pulled back. Return to the original position shown in FIG. 9 and stop. As a result, the power of the tool 20 and the release arm 22 is transmitted by converting the rotation of the gear 27 into a swinging motion by the arm 25.

The two-way clutches 34a and 34b are incorporated in the rotating shaft 34 for rotating the spool of the film cartridge M.
At the moment of the reverse rotation of 1, when the one-way clutch 34 a, which has been operating to transmit the power in the forward rotation direction until then, transmits the power in the reverse direction to the rotating shaft 34 without sufficiently disconnecting the power transmission member, The film was inserted in consideration of the risk of damaging the film that had been advanced in the direction in which the film was fed from the film cartridge M.

Next, the film separating tool 20 described above is used.
Regardless of whether the film of the film cartridge M has been developed by using the movement of the rotation mechanism, the claw e (see FIG. 15A) of the film cartridge expressing this is surely caught when the claw e (see FIG. 15A) is not broken. A claw folding mechanism for folding e will be described.

As described above, the case end plate 106 of the film cartridge M is provided with the display hole d for indicating that development has been completed. However, this can be confirmed visually, and in this rewinding device, whether or not the development has been completed is separately detected by an infrared sensor 17a.

Therefore, when the film cartridge M is inserted into the rewinding device and the film is re-wound to the intermediate cartridge N, the claw e indicating the film is not broken even though the film itself has already been developed. There is. In such a case, the nail folding mechanism shown in FIGS. 11 and 12 mechanically folds the nail to prevent a malfunction in various subsequent processes.

FIG. 3 schematically shows the above-mentioned claw folding mechanism with broken lines, FIGS. 9 and 10 are enlarged plan views thereof, and FIGS. 11 and 12 are detailed views thereof.

As shown in the figure, the claw folding mechanism 40 comprises a claw folding lever 41, a claw folding projection 44 provided at the distal end thereof, and a leaf spring 46 provided to press a roller 45 provided on the base end side. The claw folding lever 41 rotates about the hinge 42, and the claw folding projection 44 is brought into contact with the claw e of the film cartridge M by leverage to perform claw folding. 47 is a support member.

The claw folding lever 41 is always urged by an elastic spring 43 so as to be in a horizontal state. When the film cartridge M having the claw e is inserted into the storage section 3, the pushing force of FIG. As shown in FIG. In this state, the roller 45 at the end of the claw folding lever 41 comes into contact with the inclined end of the leaf spring 46 when the release arm 22 in FIG. 9 is stopped.

Therefore, as described above, the release arm 2
When the roller 2 starts rotating, the inclined end of the leaf spring 46 pushes down the roller 45, thereby rotating the claw folding lever 41 in a horizontal state. For this reason, the projection 4 at the tip of the claw folding lever 41
4 rises to push up the nail e of the film cartridge M, and the nail e is bent.

If the claw e of the film cartridge M has already been folded by some means before being inserted into the rewinding device, the claw-folding lever will remain the projection 44 even if the film cartridge M is inserted into the rewinding device. Since the claw-folding lever 41 is not tilted because it is inserted into the recessed part of e, the elastic spring 43 holds the claw-folding lever 41 in a horizontal state.

Thus, the nail folding lever 41 operates in conjunction with the movement of the release arm 22 to perform a nail folding operation. At this time, the operation of the nail folding lever 41 is detected by the sensor 48.

FIGS. 13 and 14 show details of the means for attaching the tool 20 to the release arm 22. FIG. The attachment means is configured to be easily replaced when the tool 20 is worn or damaged.

A long hole 22 is provided at the distal end of the release arm 22.
a is bored, and a rod 22b is inserted into the elongated hole 22a with the spring 22f on the back side. Rod 22
b is provided with a small hole 23 for receiving a thin rod D such as a driver inserted from a long hole 22c, and a small hole 22d for receiving a pin 22e inserted through the release arm 22. The tool 20 has a hole 20a at an end.

When attaching the tool 20 to the release arm 22, the rod D is inserted into the small hole 2 as shown in FIG.
3 and the rod 22b is pushed in the direction of the arrow (a), and the tool 20 is inserted.

When the driver D is returned to the position (a), the rod 22b is inserted into the hole 20a of the tool 20, and
The tool 20 is attached to the release arm 22. When the tool 20 is to be detached, the operation is performed in the opposite manner to the above, as shown in FIG.

[0086]

As described above in detail, the film rewinding device of the present invention has a film cartridge accommodating portion and an intermediate cartridge winding portion provided with a film guide in the main body case, and the two cartridges are independently provided. The drive is driven by a drive unit to separate the film from the spool of the film cartridge with a tool. The drive unit for this tool is shared with the one for the film cartridge and swings, and the tool guide is provided on the film guide and the film guide is provided. Is set to the minimum length, and the minimum distance between both cartridges is set, so the tool drive mechanism is rationalized, and the film rewinding device is miniaturized and compact with the minimum length of the film guide. There is an effect that an easy high-efficiency rewinding device can be obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a film rewinding device according to an embodiment.

FIG. 2 is a plan view showing a state where a cover plate is opened.

FIG. 3 is a plan view showing an internal mechanism of the film rewinding device.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a perspective view of a mechanism for opening and closing a cartridge door by a knob plate.

FIG. 6 is an overall schematic perspective view of a driving device.

FIG. 7 is an explanatory diagram of an operation of separating a film terminal from a spool with a tool.

FIG. 8 is a cross-sectional view of a rotation transmission mechanism at a lower portion of the film cartridge.

FIG. 9 is a partially enlarged plan view including a film guide, a tool, and a cartridge.

FIG. 10 is an explanatory view of the operation of the above.

FIG. 11 is a partial cross-sectional view including a claw folding mechanism at a storage portion position of the film cartridge.

FIG. 12 is an explanatory diagram of the operation of the above.

FIG. 13 is a detailed sectional view of a tool and a release arm.

FIG. 14 is an external perspective view of the above separated state.

FIG. 15A is an external perspective view of a film cartridge.
(B) Sectional view

FIG. 16A is a longitudinal sectional view of the same, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Cover plate 3 Storage part 4 Take-up part 5 Film guide 6 Knob plate 7 Opening 8 Opening 9 Support point 10 Opening / closing arm 11 Locking piece 12 Locking piece 13 Pin 14 Pin 15 Gear mechanism 16 Fixing plate 17a Infrared sensor 17b Film sensor 18 Nipping pillar 19 Column body 20 Tool 21 Release guide 22 Release arm 23 Pin 24 Pin 25 Eccentric arm 26 Pin 27 Gear 28 Gear 29 Pulley 30 Belt 31 Motor 32 Output pulley 33 Pulley 34 Rotation axis 35 Rotation axis 36 Pulley 37 Belt 38 Output pulley 39 Motor 40 Claw folding mechanism 41 Claw folding lever 42 Hinge 43 Elastic spring 44 Claw folding protrusion 45 Roller 46 Leaf spring 47 Support member 48 Sensor

Claims (4)

(57) [Claims] 1. A storage unit for a film cartridge and a winding unit for an intermediate cartridge are provided at a predetermined distance in a main body case having a cover plate that can be opened and closed, and a film fed from the film cartridge in the storage unit is wound. A film guide that guides the cartridge, a drive unit that independently rotates the spools of both cartridges, and a tool for separating the film end from the spool of the film cartridge when winding the film into the intermediate cartridge. It has a rotation transmission mechanism that can be inserted into the film cartridge by an arm that rotates in the direction opposite to the spool of the film cartridge in an arc shape, and that rotates the arm so that it can swing freely using a drive unit for rotating the spool of the film cartridge. The film guide is an arc-shaped tool for guiding the above tools. A film rewinding device having a roller guide and a length set to a minimum length including the tool guide so as to minimize the distance between the storage section and the winding section. 2. A one-way rotation transmitting means is provided on a rotation shaft for rotating and driving the spool of the film cartridge, and the film is fed by rotation of the drive unit in the normal rotation direction, and the rotation shaft is free when the drive unit is rotated in the reverse direction, The film rewinding device according to claim 1, wherein the reverse rotation driving force is transmitted to a tool rotation transmission mechanism so that the driving unit can be shared. 3. The film rewinding device according to claim 1, wherein the claw can be folded in accordance with the rotational movement of the tool. 4. The tool according to claim 1, wherein a tool is removably attached to the arm by means of a locking portion whose position can be adjusted by an elastic member at an end of the arm for rotating the tool. A film rewinding device according to any one of the above.