JPH0435891Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a negative sheet feeding device in a so-called film enveloper, which is a device for cutting exposed and developed long negative films and storing them in negative sheets.

A device for cutting an exposed and developed long negative film and storing it in a negative sheet will be briefly explained with reference to FIG. The rolled negative sheet 3 is sent out at a fixed size per pitch by a negative sheet feed roller Insert the film halfway into the negative sheet 3 with the insertion roller 7, cut the 6th or 4th frame by operating the film cut lever Y, and at the same time as cutting, the film is cut off by operating the rear end insertion lever 5. A rear end insertion plate (not shown) protruding from the end insertion plate outlet 6 allows the film to be quickly inserted into the negative sheet 3.

Conventionally, a motor and a sensor were used as a fixed-size feeding mechanism to feed the negative sheet 3 one pitch at a time, but there were difficulties in adjusting the sensitivity, etc., and the perforations on the negative sheet 3 did not necessarily match the marks. This caused problems with sensor readings and impaired the reliability of the feeding mechanism itself.

In this invention, when a long negative film that has been exposed and developed is cut into short lengths and stored in a negative sheet, when the film cut lever used for the cutting is operated to a certain angle, When the film cut lever returns to its original position after the film has been cut to the required angle to cut the negative film, its operation will cause a ratchet, gear, timing belt, chain, etc. This system uses a transmission mechanism that uses a transmission mechanism to feed the film by a fixed length, and its structure is similar to that of a so-called film envelopper, which cuts exposed and developed long negative film into short pieces and stores them in negative sheets. By rotating the lock release plate in conjunction with the film cutting operation of the lever, the lock plate and the lock boss connected to the negative sheet feed roller are unlatched, and the film is removed when the film cutting operation of the fine cut lever is completed. The rotation of the lock release plate as the cut lever returns to its original state is transmitted to a transmission mechanism using a ratchet, gears, etc., and the transmission mechanism rotates the negative sheet feed roller to feed out the negative sheet by a fixed length. This device is characterized by a structure in which the negative sheet feed roller is hooked at the same time as the negative sheet is fed out.Examples of the present invention will be described below in detail with reference to the drawings.

1 and 2, especially in FIG. 2, Y is a film cut lever, a first gear 12 is fixed to a shaft 11 to which the lever Y is fixed, and a shaft 13
A second gear 14 that meshes with the gear 12 fixed to the shaft 11 is fixed to the shaft 11, and a ratchet wheel 15 and a third gear 16 integral with the ratchet wheel 15 are loosely fitted to the shaft 11.
A lock release plate 17 is fixed to the lock release plate 17, and a shaft 19 is fixed to the lock release plate 17, and a shaft 19 is rotatably provided with a claw 18 biased in a direction to engage with the ratchet wheel 15. ing. Further, a shaft 22 is provided at the lower end of the lock release plate 17.
A pin 21 is installed on the shaft 22 to rotate the lock plate 20 which is rotatably fitted loosely into the shaft 13.
A gear 23 is attached. Reference numeral 24 designates the shaft of the negative sheet feed roller
6 and 26' (see Fig. 3) are provided at an interval of 180°, and the fourth gear 23.
A fifth gear 27 that meshes with is fixedly attached. 28
29 is the return spring of the lock release plate 17, and 29 is the catch 2 of the lock plate 20.
0' to the lock boss 25 side, 30 is a spring for pressing the pawl 18 into engagement with the ratchet wheel 15, 31 is a pressure roller, and 32 is a stopper for the lock release plate 17.

The operation of the embodiment of the negative sheet feeding device constructed as described above will be explained. In the figure, the solid line arrow indicates the direction of rotation when operating the film cut lever Y to cut the film, and the dashed line arrow indicates the rotation direction when the film is cut by operating the film cut lever Y. Indicates the direction of rotation when feeding negative sheets.

Now, when the film cut lever Y is pressed in the film cutting direction below the solid line, the first gear 12 fixedly attached to the shaft 11 of the film cut lever Y is rotated in the direction of arrow A and meshed with the first gear 12. The second gear 14 fixed to the shaft 13 is rotated in the direction B, and at the same time the lock release plate 17 fixed to the shaft 13 is rotated by the return spring 2.
8 in the direction of arrow C (see Figure 3 A). As the lock release plate 17 rotates, the pin 21 implanted in the lower end of the plate 17 pushes the lock plate 20, which is rotatably loosely fitted onto the shaft 22, against the spring 29. Arrow D
axis 2 of the negative sheet feed roller
By releasing the latch 20' of the lock plate 20 from the recess 26 on the periphery of the lock boss 25 fixed to the roller 4 (see FIG. 3B), the negative sheet feed roller X is released from the locked state.

Further, when the lock release plate 17 is rotated, the pawl 18 rotatably provided at the tip of the shaft 19 supported by the plate 17 rotates while contacting the convex portion 15' of the ratchet wheel 15. (See Figure 4 A and B) and fit into the concave portion 15'' of the ratchet wheel 15 (the fourth
(See Figure C).

The film cut lever Y is pressed down, and during this time the film is cut into short pieces. When the film cut lever Y is pressed down necessary for this cutting and the pressing operation is released, the film is locked by the bias of the spring 28. The release plate 17 is rotated in the direction of the dashed line arrow c, that is, in the direction of returning to the original position. As the unlocking plate 17 rotates, the pawl 18 attached to a shaft 19 fixed to the plate 17 also rotates together with the shaft 19, causing the pawl wheel 15 with which the pawl 18 engages to rotate. Due to this rotation, the third gear 16 integrated with the ratchet wheel 15 is also rotated in the direction of the dashed line e. As the third gear 16 rotates in the direction of the dashed-dotted line e, the fourth gear 23 that meshes with the third gear 16 and the fifth gear 27 that meshes with the fourth gear 23 move in the direction of the dashed-dotted line f and g, respectively. Rotate it. The rotation of the fifth gear 27 causes the negative sheet feed roller X to rotate. That is, the engagement between the claw 18 and the ratchet wheel 15 causes the negative sheet feed roller X to rotate.

As described above, since the recesses 26 and 26' are provided in the peripheral edge of the lock boss 25, the shaft 24 of the negative sheet feed roller As a result of the rotation of the feed roller The catch 20' of the lock plate 20 is fitted into the recess 26' of the lock boss 25 to restrict the rotation of the negative sheet feed roller X and feed the negative sheet one pitch at a fixed size.

As is clear from the above description, the negative sheet feeding device in the film enveloper according to the present invention rotates the film cut lever beyond a certain angle when operating the film cut lever to cut the film. It is possible to release the lock plate through the lock boss connected to the negative sheet feed roller and the lock release lever, and the lock release lever is linked to the return operation of the film cut lever to its original state after cutting the film. The rotation to return the plate to its original state is transmitted to the negative sheet feed roller by a transmission mechanism using a pawl, gears, timing belt, chain, etc., the negative sheet feed roller is rotated, and when the negative sheet is fed one pitch, the negative sheet is fed. Since a lock plate and a lock boss are provided as a lock mechanism to prevent rotation of the roller, reliable feeding of the negative sheet by a fixed distance is ensured. Since this is carried out by a mechanical mechanism, it has practical effects such as a simple structure, fewer failures, and easy maintenance.

[Brief explanation of the drawing]

The drawings show an embodiment of a negative sheet feeding device in a film enveloper according to the present invention. FIG. 1 is an overall perspective view of the film enveloper, and FIG. 2 is a perspective view for explaining the negative sheet feeding device. Figures A and B in Figure 3 are explanatory diagrams of unlatching,
A, B, and C of FIG. 4 are explanatory diagrams of the operating conditions of the ratchet wheel and pawl. X...Negative sheet feed roller, Y...Film cut lever, 12, 14, 16, 23, 27...
...gear, 15 ... ratchet wheel, 17 ... lock release plate, 18 ... pawl, 20 ... lock plate,
25...Rock Boss.

Claims (1)

[Scope of Claim for Utility Model Registration] A film enveloper that cuts an exposed and developed long negative film into short lengths using a reciprocatingly rotatable film cutter lever and stores the short lengths in a negative sheet, comprising: the film cutter lever; a lock release plate that rotates back and forth in conjunction with the reciprocation rotation of the film cut lever; and a lock boss that is rotated via the lock release plate and connected to the negative sheet feed roller during the film cutting operation of the film cut lever. a lock plate that is released from the latched state and comes into a latched state through elastic contact with the lock boss as the film cut lever returns to its original state; and a lock plate for releasing the lock when the film cut lever returns to its original state. When the negative sheet feed roller is rotated via the plate and the lock plate is engaged with the lock boss,
A negative sheet feeding device for a film enveloper, comprising a transmission mechanism for stopping the rotation of the negative sheet feeding roller and feeding the negative sheet to a fixed length.