JPH048128Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a film enveloper for storing photographic negative film in a negative sheet.

While a negative sheet consisting of a number of bag-shaped negative film storage sections is intermittently conveyed by a conveyance roller at a fixed size, the negative film cut into a predetermined length by a film cutter is cut into a predetermined length by a film cutter. In the film enveloper that is inserted into each of the storage sections, in order to accurately position the film inlet/outlet provided in each storage section of the negative sheet at a position facing the negative film when storing the negative film, The negative sheet is intermittently conveyed in fixed size increments by a fixed size conveyance mechanism.

By the way, in the fixed size conveyance mechanism for negative sheets in conventional film envelopers,
A sensor reads a predetermined mark placed between each storage section of the negative sheet in advance, and the operation of the conveyance roller is controlled based on the read signal.However, in such a conventional mechanism, the sensitivity adjustment of the sensor is extremely difficult. Not only is it troublesome, but it also has drawbacks such as malfunctions due to nozzles, and if the marks are not placed at the appropriate positions between the storage compartments, it becomes impossible to store the negative film. It was hot.

This idea was made in view of the above points,
The predetermined marks that have been made on the negative sheet, which have been considered indispensable for conveying the negative sheet to a fixed size, are removed, and the conveyor roller is connected to the conveyor roller via a clutch mechanism that is operated in conjunction with the negative film cutting operation of the film cutter. It is an object of the present invention to provide a film enveloper having a setting mechanism for conveying a negative sheet to a fixed size, which has an extremely simple structure and has good reliability by connecting it to a drive motor that drives the film enveloper. That is.

In order to achieve the above object, the film enveloper of the present invention conveys a negative sheet, which is made up of a number of bag-shaped negative film storage sections, connected to a drive motor via a clutch. When the negative film is stopped while being intermittently transported by rollers by a fixed length, the negative film is fed into the negative film storage section by the negative film feed roller, and cut to a predetermined length by a film cutter placed on the negative sheet side from the negative film feed roller. In a film enveloper that cuts a negative sheet and stores it in a negative film storage section, the clutch is rotated by an input hub fixed to the output shaft of a drive motor and a conveying roller that are concentrically opposed to each other. A coil spring wound in the same direction as the rotational direction of the output shaft is wound between the outer peripheral surface of an output hub fixed to a transmission shaft that transmits force, and one end of the coil spring is connected to the input/output shaft. The clutch is fixed to a control collar fitted externally across both hubs of the clutch, forming a lap spring type clutch, and the control collar is provided with a locking portion, and the locking portion is connected to and released from the locking portion. The stopper, which is freely movable and is always biased in the engagement direction, forms a setting mechanism for fixed-size conveyance, and the film cutter has a stopper that engages with the stopper in conjunction with each negative film cutting operation of the cutter. The present invention is characterized in that an actuating member is provided to bring the clutch into the connected state by releasing the engagement with the clutch.

Hereinafter, the embodiment of the present invention will be described in detail based on the drawings. First, Figs. 1 to 6 show the first embodiment of the present invention, and in Fig. 1, 1 is a bag. A negative sheet 2 that is unwound from the roll 1 is a roll around which a negative sheet 2 is wound, which is made up of a number of negative film storage sections arranged in a row.
The negative sheet 2 is intermittently conveyed by a conveying roller 3 on a negative sheet guide 4 in fixed-size increments, with the width between the centers of each storage section of the negative sheet 2 being one pitch. Further, reference numeral 5 denotes a negative film reel attached to a support 6, and the negative film 7 fed out from the reel 5 is applied with an appropriate tension by a pair of tension rollers 8a and 8b to the extent that it does not bend. The negative film feed roller 9 guides and transports the negative film on a negative film guide 10 in fixed size increments according to the depth of the storage section of the negative sheet 2.

In this way, while the negative sheet 2 and the negative film 7 are intermittently transferred and stopped at different times, when most of the leading end of the negative film 7 is inserted into the storage section of the negative sheet 2, the negative film 7 is cut to a predetermined length by the film cutter 11, and then, by operating the rear end insertion lever 12, a negative film 7
The rear end portion of the negative sheet 2 is pushed and completely stored in the storage section of the negative sheet 2. Then, store 1 order or 1 film in the predetermined number of storage compartments of the negative sheet 2.
When the negative film 7 for each job is stored, the cutter actuating lever 14 is operated to cut the negative sheet 2 with a cutter (not shown) installed in the negative sheet cutter unit 15 to cut the negative film 2 for one order or film. It is constructed so that it can perform negative film enveloping for each roll.

Next, referring to FIG. 2, a description will be given of a conveyance mechanism that drives the conveyance roller 3 to intermittently convey the negative sheet 2 by a fixed length.

In FIG. 2, the conveyance roller 3 is a so-called pinch roller consisting of a freely rotatable pressure roller 3a and a drive roller 3b, and a driven gear 17 is attached to a rotating shaft 16 of the drive roller 3b. The driven gear 17 is connected to a driving force transmitting gear 20 attached to a transmission shaft 19 via an intermediate gear 18, and the driven gear 17 is decelerated by the driving force transmitting gear 20 according to their tooth ratio. It is designed to be rotated and driven.

The transmission shaft 19 is connected to a drive electric motor 21 for rotationally driving the transmission shaft 19 via a clutch 22. The clutch 22 may be, for example, a lap spring type rotary clutch as shown in FIG. is suitable. That is, in the same figure, 2
3 indicates an input hub key-coupled to the output shaft 21a of the electric motor 21, and 24 indicates an output hub key-coupled to the transmission shaft 19. Between the outer peripheral surfaces of the hubs 23 and 24, the winding direction is the output hub. A coil spring 25 is wound around the shaft 21a, and one end 25a of the coil spring 25 is fixed to a control collar 26 fitted over both input/output hubs 23 and 24. has been done.

Therefore, when the control collar 26 is left in a free state and the output shaft 21a is rotated, the input hub 23 is rotationally driven by the rotation of the output shaft 21a, and a force is applied in the direction of reducing the diameter of the coil spring 25. to tighten the output hub 24,
The output hub 24 rotates following this, and becomes in a clutch connected state in which power is transmitted to the transmission shaft 19.

On the other hand, when the rotation of the control collar 26 is restricted, even if the output shaft 21a rotates, no force is applied to the coil spring 25 whose end portion 25a is fixed to the control collar 26 in the direction of diameter reduction. As a result, the clutch becomes in a disengaged state in which no power is transmitted to the transmission shaft 19.

In this manner, in order to restrict the rotation of the control collar 26, a locking stepped wall 27 as a locking portion is provided protrudingly on the outer peripheral surface of the control collar 26, as is particularly clear from FIG. The locking step wall 27 has a stopper 29 pivotally attached to the shaft 28.
The stopper 29 is always urged by the spring 30 in the direction of engagement with the locking step wall 27.

On the other hand, the film cutter 11 consists of a fixed blade 11a and a rotating blade 11b, and the rotating blade 11b is attached to a shaft 31.
A block 32 is provided on the other side of the rotating blade 11b with a shaft 31 in between, and a spring 33 attached to the block 32 separates the rotating blade 11b from the fixed blade 11a. It is biased in the direction.

An operating plate piece 34 as an operating member is attached to the block 32, and when the rotating blade 11b is rotated to cut the negative film 7,
The actuation plate 34 pushes the stopper 29 and releases the spring 3.
0, the engagement between the stopper 29 and the locking step wall 27 can be released.

Further, the control collar 26 has a differential pin 35 protruding from its outer circumferential surface, and the differential pin 35 is used to disengage the stopper 29 and the locking stepped wall 27. After a slight rotation, the clutch is brought into contact with a stop wall 36 formed on the block 32, and after the rotary blade 11b is released, it can be moved to the clutch connected state.

When the clutch is connected, the transmission shaft 1
After the control collar 26 is rotated once together with 9, the stopper 29 again engages with the locking step wall 27 and the clutch is in the disconnected state. A setting mechanism for fixed-size conveyance is configured.

The present embodiment is constructed as described above. Next, the operation of the setting mechanism for conveying the negative sheet 2 to a fixed size will be explained with reference to FIGS. 4 and 5.

First, as shown in FIG. 4, when the rotary blade 11b is in an inoperative state separated from the fixed blade 11a, the stopper 29 is engaged with the locking step wall 27, and the clutch is held in the disconnected state. ing.

Next, when the rotary blade 11b is rotated and the negative film 7 is cut, the operating plate 34 of the block 32 is moved to the stopper 29, as shown in FIG.
As a result, the stopper 29, which is rotated about the shaft 28 in the direction of the arrow, is disengaged from the locking step wall 27. As a result, the control collar 26 of the clutch 22 and the transmission shaft 1
9 is rotated slightly, but the differential pin 35 comes into contact with the stop wall 36 of the block 32, and the clutch 22 is again in the disconnected state. Therefore, the negative sheet 2 will not move unnecessarily while the negative film 7 is being cut.

Furthermore, as shown in FIG. 6, the rotating blade 11b
When the differential pin 3 is returned to its original state of non-operation,
5 is separated from the restraining wall 36, and the control collar 26 of the clutch 22 is in a state where it can freely rotate.
The clutch is connected. As a result, the power of the drive motor 21 is transferred to the transmission shaft 19 via the clutch 22.
As shown by arrows in FIG. 2, the driving force transmission gear 20, intermediate gear 18, and driven gear 17
rotates sequentially to rotate the drive roller 3b, thereby transporting the negative sheet 2 inserted between the drive roller 3b and the pressure roller 3a.

When the clutch 22 rotates once, the clutch is in the disengaged state shown in FIG.

Therefore, by appropriately setting the tooth ratio between the driving force transmission gear 20 and the driven gear 17, it is possible to ensure that the negative film 7 is stored in the storage section next to the negative sheet 2.
It is then transported to the position where it should be inserted.

Next, FIGS. 7 to 11 show the second embodiment of the present invention.
In this embodiment, a long groove 42 is formed in a stopper 41 for a setting mechanism for fixed-size conveyance that engages with a locking stepped wall 27 formed on a control collar 26 of a clutch 22. By inserting a shaft 43 through the long groove 42, the stopper 41 can be rotated about the shaft 43 and can also be moved in the vertical direction along the long groove 42.

A spring 45 is provided between the stopper 41 and the pin 44, and the spring 45 is connected to the stopper 41.
1 in the direction of engagement with the locking step wall 27, and the coil spring 25 (third
(See figure) The stopper 41 is urged downward in the figure with a weaker spring force.

Further, the stopper 41 is formed with a notch 46 for overrun prevention.
The actuating plate piece 48 attached as an actuating member engages with a block 47 provided on the rotary blade 11b, thereby preventing the clutch 22 from overrunning.

Note that the configuration other than the above is substantially the same as the first embodiment, so the corresponding members include:
The same reference numerals are used to omit the explanation.

That is, as shown in FIG.
When the blade b is in an inoperative state away from the fixed blade 11a, the stopper 41 engages with the locking step wall 27, and the clutch is in the disconnected state.

When the rotary blade 11b is rotated to cut the negative film 7, the actuating plate 48 of the block 47 moves against the spring 45 to move the stopper 41 away from the locking step wall 27, as shown in FIG. The control collar 26 is then moved in the direction of separation, thereby allowing the control collar 26 to rotate freely and into the clutched state.

Then, as shown in FIG.
1 is displaced downward by the spring 45, thereby the stopper 41 is displaced in the direction of contacting the control collar 26, and the actuating plate piece 48 is fitted into the notch 46, but the control collar 26 has already rotated to some extent. , so rotation of the clutch 22 is not hindered.

Thereafter, when the rotary blade 11b is returned to the non-operating state, the clutch 22 rotates once and is stopped, as shown in FIG.

During this operation, move the rotary blade 11b to the negative film 7.
Even if the clutch 22 is kept in the disconnected state, the stopper 41 and the locking stepped wall 27 can be engaged with each other, as shown in FIG. 11, and overrun of the clutch 22 can be prevented.

As described above in detail, the film enveloper according to the present invention has a clutch which is operated in conjunction with each negative film cutting operation by the film cutter as a setting mechanism for conveying the negative sheet to a fixed size. Because the configuration connects the conveyance roller and the drive motor that drives it via the
The structure is extremely simple and can be manufactured at low cost.
Furthermore, there is no need to mark the negative sheet, and when the work of storing the negative film in the negative sheet storage section is completed, it is possible to reliably transport the next storage section to a position where the negative film can be stored. This makes it possible to reliably prevent inconveniences such as errors in negative film storage operations.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention. FIG. 1 is an overall configuration diagram of a film enveloper, and FIG. FIG. 3 is a sectional view of the clutch, FIGS. 4 to 6 are operation explanatory diagrams showing different operating states, and FIGS. 7 to 11 are diagrams of the present invention. FIG. 7 is a perspective view similar to FIG. 2 with some parts omitted, and FIGS. 8 to 11 are operation explanatory views showing different operating states. 1... Roll, 2... Negative sheet, 3... Conveyance roller, 3a... Pressure roller, 3b... Drive roller, 5... Negative film reel, 7... Negative film, 11... Film cutter, 11a... ...Fixed blade, 11b...Rotating blade, 19...Transmission shaft, 21
... Drive motor, 21a ... Output shaft, 22 ... Clutch, 23 ... Input hub, 24 ... Output hub,
25...Coil spring, 25a...One side end, 26
... Control collar, 27 ... Locking step wall, 2
9, 41... stopper, 32, 47... block, 34, 48... operating plate piece.

Claims (1)

[Scope of utility model registration request] A negative sheet consisting of a large number of bag-shaped negative film storage sections is intermittently conveyed by a conveyance roller connected to a drive motor via a clutch, and when the conveyance is stopped, the negative film is In a film enveloper, in which a negative film is fed into the negative film storage section by a negative film feed roller, the film is cut to a predetermined length by a film cutter disposed on the negative sheet side from the negative film feed roller, and the negative film is stored in the negative film storage section of the negative sheet. , the clutch is arranged between the outer peripheral surfaces of an input hub fixed to the output shaft of the drive motor and an output hub fixed to the transmission shaft that transmits rotational force to the conveyance roller, which are arranged concentrically opposite each other. A coil spring is wound in the same direction as the rotational direction of the output shaft, and one end of the coil spring is fixed and wrapped around a control collar fitted externally across both input/output hubs. A spring type clutch is provided, and the control collar is provided with a locking portion, and the locking portion and a stopper that can be freely engaged and disengaged from the locking portion and are always biased in the engagement direction are used for fixed size conveyance. The film cutter is provided with a setting mechanism, and the film cutter includes an actuating member that disengages the stopper from the locking portion and connects the clutch each time the cutter operates to cut a negative film. A film envelopper characterized by being attached.