JPH0651443A - Photographic film rewinding method - Google Patents

Abstract

PURPOSE:To stably rewind a photographic film in a cartridge main body without damaging a flange in the case that the rigidity of a flange is low and even in the case that the flange and a spool shaft are separately formed. CONSTITUTION:The cartridge main body with an empty spool assembled is carried in a dark room and set on the nest of an index table 20. When a film is loaded, the cartridge is rotated by an L value >=0.3mm and by an angle thetacapable of inserting a film guide 27 in the cartridge main body, and an upper case 4 and a lower case 5 are separated. The leading end part of the film guide 27 is inserted close to the shaft of the spool 6. The photographic film 7 is carried by a pair of inserting rollers 26, the trailing end part 7b is inserted in a slit 15, and then, locked by a pawl 16 and a pressure rib 17. After the film guide 27 is retreated, the upper and lower cases 4 and 5 are closed, and then, the spool 6 is rotated so as to rewind the photographic film 7 in the cartridge main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a photographic film in a main body of a photographic film when assembling the photographic film cartridge.

[0002]

2. Description of the Related Art The most popular type 135 photo film cartridge has a thin metal plate cartridge body and two.
The cartridge body is composed of two caps, and the spool around which the photo film is wound is stored in it. As known from Japanese Patent Publication No. 2-691, a photo film is wound around a spool and prepared so that the photo film patrone can be wrapped in a patrone body by working in a dark room. Furthermore, as described in Japanese Patent Publication No. 60-48748, the assembled cartridge body is partially disassembled at the photo film installation part in the dark room, and the spool around which the photo film is wound is put in it. There is a method to reassemble the Patrone body.

According to US Pat. Nos. 4,834,306 and 4,846,418, and Japanese Patent Laid-Open No. 3-37645 by the present applicant, the cartridge body is assembled with a resin molded product, and the spool A photographic film cartridge having a function of sending the photographic film out of the body of the cartridge by rotation is known.
This photo film patrone is different from the previous ones, and the leader part of the photo film does not protrude from the patrone body in both unused condition and used condition, so not only can the photo film be stored more light-tightly,
It has the advantage that it can be easily handled before and after use.

In such a photographic film cartridge, it is necessary to prevent the photographic film from being loosened from the spool when the spool is rotated. For this reason,
The flanges that regulate the positions of both sides of the photo film roll wrapped around the spool are molded, for example, from a relatively soft material, or molded separately from the spool, and the flange is regulated inside the cartridge body by a regulating member. It is known that the photographic film roll is pressed from both sides by pressing it to.

[0005]

However, if the method of winding the photographic film around the spool having the low rigidity or the separate flange described above and loading the photographic film into the cartridge body is adopted, the spool is mounted in the cartridge body. Since the position of the flange is not stable when inserting or closing the cartridge body after inserting, the flange is bent or damaged by the restriction member, or the flange and the restriction member have a predetermined positional relationship (flange There is a problem in that a trouble often occurs such that the regulating member is not located outside).

According to the present invention, even when assembling a photographic film cartridge having a low flange rigidity or a photographic film cartridge in which the flange is separate from the spool shaft, the photographic film can be stably placed in the main body of the cartridge without damaging the flange. An object of the present invention is to provide a photographic film winding method capable of being rolled up.

[0007]

In order to achieve the above object, the present invention assembles a cartridge body in a state in which a spool is housed in advance, and then, in the process of winding the photographic film into the cartridge body, the flange is removed from the regulating member. The patrone body is opened to the extent that it does not come off, the end of the photo film is engaged with the spool to close the patrone body, and then the spool is rotated to wind the photo film into the patrone body.

FIG. 2 shows an example of a photographic film cartridge 1 according to the present invention. The photo film cartridge 1 is a cartridge main body 2 composed of a resin-molded upper case 4 and a lower case 5, a spool 6 rotatably mounted therein, and a cartridge main body 2 wound around the spool 6 in a roll shape. The photo film 7 is housed inside.

Flange 8a, 8b formed of a flexible resin is fitted on both ends of the shaft of the spool 6. A pair of ribs 9 are formed on the inner walls of the upper and lower cases 4 and 5, and when the spool 6 is housed in these upper and lower cases 4 and 5, the ribs 9 form the side surfaces of the flanges 8a and 8b from the outside to the inside. Press to prevent the photographic film 7 from winding loose. Therefore, when the spool 6 is rotated in the film feeding direction (clockwise in the drawing), the photographic film roll 7a in which the photographic film 7 is wound around the spool 6 is also rotated in the same direction as the spool 6. become. Reference numeral 11 indicates a tip separation claw, and when the photographic film roll 7a is rotated together with the spool 6, the tip separation claw 11 scoops the tip of the photographic film 7. In addition, the upper and lower cases 4 and 5 have port portions 4
a and 5a are provided, and a light-shielding telemp 1 is provided on each inner surface.
2 and 13 are attached.

A slit 15 is formed in the shaft portion 6a of the spool 6. Inside the slit 15, a pair of claws 1
6 and a pressing rib 17 are provided, and the pressing rib 17 projects downward between the claws 16. The slit 15 has an insertion opening on the left side in FIG. 1, and the rear end portion 7b of the photographic film 7 is inserted through this insertion opening. This rear end 7
Since a pair of locking holes (not shown) are formed in b, the claw 16 engages with this locking hole, and the pressing rib 17 presses the rear end portion 7b so as not to float, so that the slit Even if force is applied in the direction of pulling out the photographic film 7 from 15, the rear end portion 7b does not come off.

In FIG. 3, six work stations are provided around the index table 20 used in the winding process of the photographic film 7. Corresponding to this, six work stations are provided on the index table 20.
Six nests 22 for holding the patrone body 2 are attached. The work station is provided with a carry-in conveyor 24 and a robot 25, and the robot 25 transfers the cartridge body 2 conveyed by the carry-in conveyor 24 to the nest 22 waiting at the station. At the work station, a fork to be described later is engaged with the end of the spool 6, and at the next work station, the spool 6 is rotated so that the rear end 7b of the photographic film 7 can be inserted into the slit 15 of the spool 6. .

At the work station, a pair of insert rollers 26 and a film guide 27 are movably provided, the film guide 27 is inserted into the cartridge main body 2 opened by the nest 22, and the rear end portion 7 of the photographic film 7 is inserted.
Insert b into the slit 15 of the spool 6. At the work station, the spool 6 is rotated by a fork, and the photographic film 7 is wound into the cartridge body 2 up to the tip. The work station is an empty station. At the work station, the carry-out conveyor 28
A robot 29 is provided, and the robot 29 grabs the cartridge main body 2 in which the photo film 7 is caught and transfers it to the carry-out conveyor 28. The carry-out conveyor 28 conveys the cartridge body 2 to the next welding step.

As shown in FIGS. 4 and 5, the nest 22 is composed of upper and lower case holders 31 and 32 corresponding to the external shape of the cartridge main body 2. Upper case holder 3
1 is fixed to the upper surface of the index table 20, to which a clamper 33 is attached so as to be able to move up and down via a shaft 33a. A spring 35 is provided between the tip portion 34 of the shaft 33a and the lower surface of the index table 20, and the spring 33 urges the clamper 33 toward the index table 20. At the work station, the tip portion 34 is pressed by, for example, a hydraulic cylinder device or the like, and a space sufficient to receive the upper case 4 is formed between the upper case holder 31 and the clamper 33.

The lower case holder 32 is attached to the index table 20 via a shaft 32a so as to be rotatable and movable up and down. A lever 37 is fixed to the shaft 32a and is connected to a control mechanism via the lever 37 to control the rotation / elevation position of the lower case holder 32. Further, the lower case holder 32 is provided with clampers 38, 39 for holding the lower case 5 by sandwiching it from above and below so as to be able to move up and down with respect to the lower case holder 32.

Shafts 38a, 39a of the clampers 38, 39
Rack gears 41 and 42 are respectively formed in the rack, and these are connected by a pinion gear 43, so that the clampers 38 and 39 are moved up and down in conjunction with each other. The shaft 38b of the clamper 38 is attached to the lower case holder 3
The second shaft 32a penetrates through, and its tip 45 is exposed on the lower surface side of the index table 20. This tip 45
A spring 46 is provided between and the tip of the shaft 32a to urge the clamper 38 toward the index table 20. Further, the index table 20 between the case holders 31 and 32 is provided with a fork 48 which is engaged with the end of the spool 6 through a hole 20a and rotates the fork 48 so as to be vertically movable. A gear 49 is fixed to an end of the fork 48, and a rotation drive device for rotating the fork 48 is connected to the gear 49.

In FIG. 1 showing the process of connecting the rear end portion 7b of the photographic film 7 and the spool 6 at the work station, the lower case holder 32 is rotated about the shaft 32a by an angle θ, and the upper case 4 and the lower case 4 are rotated. 5 and 5 are separated. At this time, if L (see FIG. 6) indicating the amount of overlap between the flange 8a and the rib 9 of the lower case 5 becomes smaller than a predetermined value, the flange 8a will have the rib 9 when returning the lower case 5 to the original position. There is a problem that the rib 9 is damaged by the above or the rib 9 does not return to a predetermined position (outside the flange 8a). The value of this L is rib 9
It is a value that changes depending on the chamfered state of the flanges 8a and 8b, the rigidity, the friction resistance, and the like.

[0017]

EXAMPLES The following experiment was conducted to determine the range of L values. As shown in FIG. 1, for example, the outer diameter a of the flange 8a
Is 21.2 mm, the inside diameter b of the cartridge body 2 is 22 mm, the inner radius c of the rib 9 is 8 mm, the distance d from the center of rotation to the center point of the flange 8a is 14 mm, and the radius of curvature R of the outer peripheral surface of the rib 9 (Fig. 6) is 0.2 mm, the value of L is changed from 0.1 mm to 0.6 mm, and in each case, the patrone main body 2 is opened and closed 20 times, and the occurrence of the above-mentioned trouble is investigated. It was As a result, the following Table 1 was obtained.

[0018]

[Table 1]

The meanings of the symbols ◯, Δ, and × in Table 1 are as follows: ◯: no occurrence of trouble, Δ: less than 4 occurrences of trouble, ×: more than 4 occurrences of trouble. Therefore, the value of L should be 0.3mm or more,
It can be seen that it is sufficient to set the angle θ.

The insert roller pair 26 and the film guide 27 are, as shown in FIG. 1, a film guide 27.
The index table 20 and the film loading position for inserting the front end of the sheet into the inside of the Patrone body 2 in the open state.
It is advanced and retracted integrally with the retracted position that does not interfere with the rotation of. In the film loading position, the film guide 27
Of the photographic film 7 that has been conveyed by the insert roller pair 26, with the tip end of the photographic film 7 approaching near the axis of the spool 6.
The rear end portion 7b is inserted into the slit 15. After the rear end portion 7b of the photographic film 7 is locked to the spool 6 by the claw 16 and the pressing rib 17, the insert roller pair 26 and the film guide 27 are returned to the retracted position.

The operation of winding the photographic film 7 into the cartridge main body 2 using the index table 20 will be described. First, in a bright room, insert the telemps 12 and 13 cut into a certain length into the port portions 4 of the upper and lower cases 4 and 5.
A hot melt adhesive or the like is applied to the inner surfaces of a and 5a. After that, the upper and lower cases 4 and 5 are supplied to a temporary assembly device (not shown). This temporary assembling device accommodates the spool 6 inside and fits the upper and lower patrones 4 and 5 together. At this time, since the assembly is performed in a bright room, the soft flanges 8a and 8b can be securely and easily carried out without being damaged by the ribs 9. Next, the cartridge main body 2 is supplied to the carry-in conveyor 24.

The carrier body 2 is moved by the carry-in conveyor 24.
Are sent to the work station of the index table 20 installed in the dark room. The cartridge main body 2 is set in the nest 22 from above by the robot 25. When setting the cartridge main body 2, the lower case holder 32 is in the open position, and the clampers 33, 38,
Each 39 is in the unclamped position. Then, when the cartridge body 2 is transferred between the upper case holder 31 and the lower case holder 32, the lower case holder 32 is rotated to the closed position, and then the clampers 33, 38, 39.
Are moved to the clamp positions, and the upper case 4 is held by the upper case holder 31 and the lower case 5 is held by the lower case holder 32.

When the index table 20 is rotated and the cartridge body 2 is sent to the work station, the fork 48 engages with the end of the spool 6 and the spool 6
Is rotated. Then, the spool 6 is stopped at a position where the entrance side of the slit 15 formed in the shaft portion of the spool 6 faces the outside of the index table 20. After that, the index table 20 is rotated, and the L value of the lower case holder 32 is 0.3 mm or more between the work stations and the work guides.
The upper and lower cases 4 and 5 are separated by rotating 7 by an angle .theta. That can be inserted into the cartridge body 2.

At the work station, the pair of insert rollers 26 and the film guide 27 are moved to the film loading position, and the leading end of the film guide 27 is inserted between the port portions 4a and 5a to the vicinity of the axis of the spool 6. After that, the insert roller pair 26 is driven, and the photographic film 7 which is preliminarily cut into a predetermined length and perforated is guided by the film guide 27 and conveyed toward the spool 6. When the rear end portion 7b of the photographic film 7 is inserted into the slit 15, the nail 16
Then, the insert roller pair 26 and the film guide 27 are returned to the retracted position.

Next, while the index table 20 is rotated to move the cartridge body 2 from the work station to the work station, the lower case holder 32 is rotated toward its original position to fit the upper and lower cases 4 and 5. Are combined. At this time, the flanges 8a and 8b are set at predetermined positions inside the ribs 9 without causing troubles such that the flanges 8a and 8b are bent or damaged by the ribs 9.

When the cartridge main body 2 arrives at the work station, the fork 48 is driven to rotate the spool 6, and the photographic film 7 is wound around the shaft of the spool 6 from the rear end side. Photo film 7 is Telempu 1
It passes through between 2 and 13 and is drawn into the cartridge main body 2, and is wound up in the cartridge main body 2 to the tip.
Then, for example, when the tension of the photographic film 7 is detected by the sensor, the driving of the fork 48 is stopped,
The rotation of the spool 6 is stopped.

When the index table 20 is rotated and the cartridge main body 2 in which the photographic film 7 is stored passes through an empty work station and arrives at the work station, it is transferred to the carry-out conveyor 28 by the robot 29 and the next welding is performed. Transferred to the process. Empty nest 2
A new cartridge main body 2 is sequentially supplied to 2 at the work station, and the same work is repeated thereafter.

[0028]

As described above, according to the present invention, the cartridge main body incorporating the empty spool is opened within the range in which the flange does not come off the regulating member, and the end portion of the photographic film is engaged with the spool. Then close the Patrone body. The spool is rotated so that the photo film is wound inside the cartridge, so the flange is damaged even when assembling a photo film cartridge or a flange where the flange is separate from the spool shaft. The photographic film can be stably wound inside the Patrone body without any trouble. Further, since the work of loading the spool with the flange assembled into the cartridge body can be performed in the bright room, the reliability of the equipment for performing this work can be improved. Further, since the number of steps in the dark room can be reduced, the recovery time in the event of a failure is shortened, the operating rate of the equipment is improved, and the load on the operator is also reduced. Also,
Since this work is performed before inserting the photo film, even if a trouble should occur during this work, the loss of the photo film can be avoided.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a state in which an upper case and a lower case according to the present invention are separated.

FIG. 2 is an exploded perspective view of a photographic film cartridge.

FIG. 3 is a schematic diagram showing an index table.

FIG. 4 is a plan view showing a state in which a photographic film cartridge is set in a nest.

FIG. 5 is an end view showing the structure of a nest.

FIG. 6 is an explanatory diagram showing a relationship between a flange and a rib.

[Explanation of symbols]

 1 Photo film Patrone 2 Patrone body 4 Upper case 5 Lower case 6 Spool 7 Photo film 8a, 8b Flange 9 Rib 15 Slit 20 Index table 22 Nest 26 Insert roller 27 Film guide 31 Upper case holder 32 Lower case holder 33, 38, 39 Clamper

Claims (1)

[Claims] 1. A cartridge body comprising two members,
A spool that is rotatably housed therein and that winds the photo film in a roll shape, and flanges that are provided at both ends of the spool to prevent the photo film from being loosened by pressing the roll photo film from both sides. Provided on the inner peripheral wall surface of the Patrone body, in the method of winding the photo film into the photo film Patrone, which is composed of a regulating member for regulating the position of the flange, after assembling the Patrone body in a state in which the spool is stored in advance, In the process of winding the photo film into the cartridge body, open the cartridge body within the range where the flange does not come off from the regulating member, engage the end of the film with the spool, close the cartridge body, and then rotate the spool. Photo film winding, characterized by winding the film inside the cartridge How to imprint.