JPH05134361A - Production of film unit with lens - Google Patents

Abstract

PURPOSE:To obtain the process for production of the film unit with a lens using a photographic film cartridge which winds even the front end of a film into a cartridge body in an unused state. CONSTITUTION:A body part 20 and a rear cover 22 of the film unit are supplied to the prescribed position on a base plate 48 mounted with the plural units on a transporting belt 54. The transporting belt 54 is fed stepwise by a known driving mechanism and passes a dark room 55 during the course of the traveling. A film unit supplying stage 56, a cartridge and winding shaft supplying stage 57, a rear cover fixing stage 58, a dark room operation stage 63, and a product taking-out stage 62 are determined respectively in correspondence to the feed position of the transporting belt 54 and a loading station 49 is provided in the corresponding position. The dark room operation stage 63 is further divided into three stages 59, 60, 61.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a lens-fitted film unit using a cartridge in which even the leading end of the film is stored.

[0002]

2. Description of the Related Art A film unit with a lens called "Sharanrun Hi" (trade name), which can be said to be a kind of camera with a built-in film in the unit body that incorporates a simple shooting mechanism so that you can easily take a picture at any time Is manufactured and sold by the applicant and is widely used. This lens-fitted film unit (hereinafter referred to as a film unit) has a very simple structure, as known from Japanese Patent Publication No. 2-332615, and after photographing, each film unit is the same as a conventional photographic film. You can request a DPE.

The film that has been used in the film unit so far is one with a 110 cartridge and a cartridge.
It was a 35 film, but the 110 cartridge was already stretched between the two axes, so I just loaded the cartridge into the film unit. Thirteen
When using 5 films, the film unit does not have a film rewind mechanism to reduce costs,
The unexposed film is drawn out of the photo film cartridge in advance, and the exposed film is wound into the film cartridge. Therefore, it was necessary to pull out the film from the cartridge in a dark room to make a film roll and then load it into the film unit.
Since the 35 film has the tip of the film protruding outside the cartridge, the winding operation was easy.

In these film units, a main body for accommodating the film and a back cover are adhered or fitted to each other, and an unexposed film pulled out from the patrone in the meantime is a roll film accommodating chamber and a patrone accommodating chamber. Is spread to the exposure position between. When the unexposed film that has been pulled out in advance in the film unit and stored in a roll is exposed, the film is taken up in the patrone at each shooting, and the film is put in the patrone at the end of all frame shooting. Can be stored completely.
At the photo lab, a cartridge containing the photo film already taken in the bright room is taken out from the recovered film unit and the photo film is developed.

On the other hand, as seen in US Pat. No. 4,834,306, US Pat. No. 4,846,418, etc., even the tip of the photographic film is wound in the cartridge body when it is not used, and the spool is rotated when it is used. Has proposed a photo film patrone in which the photo film is sent out. In such a photo film patrone main body, the spool shaft around which the photo film is wound is stored rotatably, and on the inner wall of the main body of the photo film, there is a rib that regulates the looseness of the photo film roll. It is arranged. Further, a tip separating claw is integrally formed on the inner wall of the cartridge main body so as to come into contact with the outermost peripheral surface of the photographic film roll at the back of the photographic film delivery port. When the spool shaft is rotated in the photographic film feeding direction by the mechanism on the camera side, the photographic film roll also rotates together with the spool shaft. When the leading edge of the photographic film reaches the position facing the photographic film discharge port, the leading edge of the photographic film is separated from the photographic film roll by the separating claw, and the photographic film is sent out between the light-shielding members attached inside the discharge port. Be done.

[0006]

From such a background, it is conceivable to manufacture a film unit using the photographic film cartridge described in the above publication. However,
In the unused state, the photographic film cartridge described in the above publication is wound into the main body of the photographic film even to the tip of the photographic film, and when the film roll is produced, the tip of the film protruding from the patrone like the 135 film is wound up. I can't go. It is also necessary to consider not scratching the leading end of the film when producing the film roll. The present invention has been made in consideration of the above problems, and provides a method for manufacturing a lens-fitted film unit using a photographic film cartridge in which the tip of the photographic film is wound into the main body of the photographic film in an unused state. It is also an object of the present invention to provide a method for producing a film roll from a photographic film cartridge without damaging the tip of the film.

[0007]

SUMMARY OF THE INVENTION To achieve the above object, the present invention firstly comprises, in a first step, a photographic film cartridge having a structure in which a spool is rotated in the feeding direction to feed the leading end of the film out of the inside of the cartridge body. The film is loaded in a cartridge chamber provided in the main body, and a winding shaft having a capturing means for the film tip is inserted into the film roll chamber. In the second step, a rear cover is attached to the back surface of the unit main body to cover the cartridge chamber and the film roll chamber, and in the third step, the film winding winding knob is prevented from being reversely operated. Release the pawl. Then, in the fourth step, the spool is rotated in the delivery direction, the tip of the film is delivered from the cartridge body and delivered to the film roll chamber, and the winding shaft is rotated faster than the delivery speed of the film, so that the film is attached to the winding shaft. Is wrapped in a roll. After forming the film roll in the film roll chamber in this way, the winding shaft may be pulled out from the film roll, or the winding shaft may be separated from the drive mechanism and left in the film roll chamber.

In still another aspect of the invention, in the first step, the photographic film cartridge having a structure in which the tip of the film is fed out from the inside of the cartridge body by rotation in the feeding direction of the spool is held outside the unit body, and the photographic film cartridge is held. The winding shaft is faced so that the film guiding means is sandwiched between and. In the subsequent second step, the spool is driven in the film feeding direction to feed the leading end of the film from the cartridge body toward the winding shaft through the film guiding means, and in the third step, the leading end of the film is wound by the winding shaft. And the winding shaft is driven to wind the film into a roll. Then, in the fourth step, the winding shaft around which the film is wound in a roll shape and the cartridge body are set in the film roll chamber and the cartridge chamber of the unit body, respectively, and then the rear cover is attached to the back surface of the unit body to install both of them. I tried to cover the room. Further, before the fourth step, a step of adjusting the interval between the cartridge body and the winding shaft to match the interval between the cartridge chamber and the film roll chamber may be added.

[0009]

EXAMPLE A photographic film cartridge shown in FIG. 12, for example, is used for the film unit produced by the manufacturing method of the present invention. This photo film patrone 2 has resin case bodies 3a and 3b that constitute the patrone body 3.
And a spool 4 rotatably accommodated therein and a film 5 wound around the spool 4. The film 5 is tightly wound around the flanges 4a and 4b of the spool 4, and by incorporating the film 5 into the cartridge body 3, the outermost circumference of the film 5 has outer peripheral regulating ribs 6, which are integrally provided on the inner walls of the case bodies 3a and 3b. It is held down by 7 and the film 5 does not loosen from the spool 4. Further, when the photo film cartridge 2 is assembled, the end 4c of the spool 4 coincides with the outer surface of the case bodies 3a and 3b, and at least does not project. Port portions 8 and 9 that serve as discharge passages for the film 5 are formed on the case bodies 3a and 3b, and a light-shielding teremp 10 is attached to the inner walls of the case portions 3 and 3 so as to face each other. The tips of the port portions 8 and 9 serve as the film discharge port 11. Further, a tip separation claw 12 is provided at the back of the port portion 9 of the case body 3b.

When the spool 4 is driven in the clockwise direction by using the key provided on the end 4c of the spool 4, the film 5 is tightly wound around the spool 4, so that the film 5 also rotates together with the spool 4. To do. Then, when the film front end portion 5a moves to a position facing the discharge port 11, the film front end portion 5a is scooped up by the front end separation claw 12, and the spool 4 is continuously driven, so that the film front end portion 5a.
Is discharged from the discharge port 11 through the space between the telemps 10.

In FIG. 2, which shows the external appearance of the film unit manufactured by the manufacturing method of the present invention, the unit main body 13 is mainly made of plastic and is entirely covered with the paper box 14. The paper box 14 includes a taking lens 15, a shutter button 16, a winding knob 17, a viewfinder window 18,
There are holes for exposing the display window 19 for checking the number of remaining films, and operation through these holes,
It is observable. In FIG. 1 showing the unit main body 13 disassembled into a main body portion 20 (the front cover 21 is already fixed) and a rear cover 22, an opening 20a extending from the back surface to the bottom surface is formed in the main body portion 20.
The shape of the rear cover 22 is determined so as to shield the light tightly.

The main body 20 is provided with a film roll chamber 24 and a cartridge chamber 25 so as to sandwich the exposure frame 23. On the upper wall of the cartridge chamber 25, a fork 26 for film winding, which is integrally formed on the lower portion of the winding knob 17, projects. Further, film rails 27 and 28 are provided above and below the exposure frame 23, and support the upper and lower portions of the film 5 so as not to damage the exposure range of the film 5. As shown, the film rails 27 and 28 are bulged in the middle on the rear cover 22 side, and the sprocket 29 is exposed above the sprocket 29.

In the unit main body 13 composed of the main body portion 20, the front cover 21 and the rear cover 22, the above-mentioned photographic film cartridge 2 for preliminarily storing the film 5 in a light-shielded state at the time of assembling, and this photographic film cartridge. Two
The film 5 pulled out from the patrone chamber 2
5 and the film roll chamber 24 are loaded respectively. The rear end of the film 5 is fixed to the spool 4 provided in the photographic film cartridge 2. This loading operation will be described in detail later, but after at least the photographic film cartridge 2 is loaded, the rear cover 22 is covered so as to shield the opening 20a from light, and the locking projections 30, 31 and the like provided on the bottom surface of the main body portion 20 are provided. Are engaged and fixed with locking holes 32 and 33 provided in the rear cover 22.

On the inner surface of the rear cover 22, there is formed a film regulating surface 34 which is curved similarly to the curvature of the film rails 27, 28 on the main body 20 side, and a predetermined exposure is performed from the back surface of the film 5. Positioned in position. A recess for receiving the protruding portion of the sprocket 29 is provided in a part of the film regulation surface 34. Rear cover 22
A film roll chamber lid 50 and a cartridge chamber lid 51 are provided on the bottom surface of each. Even after the main body 20 is covered with the rear cover 22, by opening the film roll chamber cover 50 and the cartridge chamber cover 51, the film roll chamber 24,
The bottom opening of the cartridge chamber 25 can be exposed.
For this reason, the photographic film cartridge 2 containing the exposed film can be easily taken out by opening the cartridge chamber lid 51 after the photographing is completed. Of course, when the film roll chamber lid 50 and the cartridge chamber lid 51 are closed, the unit main body 13 is completely shielded from light.

In FIG. 6 showing the main body 20 and the front cover 21 disassembled, an exposure applying mechanism for exposing the film 5 is provided between the film roll chamber 24 and the cartridge chamber 25 of the main body 20. There is. The film 5 is provided with a well-known perforation 5b, and the sprocket 29 is engaged with the perforation 5b, and one rotation of the sprocket 29 feeds the film 5 for exactly one frame. A cam 35 having a notch 35a on the outer periphery is provided coaxially with the sprocket 29, and a pawl of a locking lever 36 is in contact with the outer periphery of the cam 35. The locking lever 36 is rotatable around a shaft 37, and is biased in the clockwise direction by a spring 38 whose one end is locked to the bent piece 36a. Further, the locking lever 36 is provided with a winding stop claw 36b that engages with the tooth row portion 17a formed on the outer periphery of the winding knob 17 and prevents the winding knob 17 from rotating. Further, a check claw 17b made of a leaf spring is engaged with the tooth row portion 17a of the winding knob 17 to prevent it from rotating in the film feeding direction.

When the film 5 is wound up in the photographic film cartridge 2, the cam 3 together with the sprocket 29 is wound.
5 also rotates counterclockwise in the figure. The sprocket 29 is further provided with a one-tooth gear 39 coaxially and meshes with a tooth row formed on the outer periphery of the number display plate 40. Therefore, when the sprocket 29 makes one revolution, the one-tooth gear 39 also makes one revolution, and the number display plate 40 rotates one scale. A shutter drive lever 42 is provided below the number display plate 40 so as to be rotatable around a shaft 41. The shutter drive lever 42 is biased counterclockwise by the spring 38, and when the locking lever 36 is released, the shutter cover 4 is released.
The claws 44 provided at the ends of the shutter blades protruding from 3 are kicked and opened and closed. Further, the claw 42a of the shutter drive lever is in contact with a shutter charging cam formed integrally with the cam 35, and the shutter is charged by one rotation of the sprocket 29.

A bent piece 36a of the locking lever 36 is provided below the shutter button 16 provided on the upper surface of the front cover 21.
A rod 16a extending rearward so as to abut on is integrally molded. Therefore, when the shutter button 16 is pushed down, the locking lever 36 is rotated counterclockwise via the rod 16a against the bias of the spring 38, and the shutter driving lever 42 is unlocked. Also, on the front surface of the front cover 21,
In addition to the photographing opening 45 and the viewfinder window 18, the opening 4 is provided at a position located in front of the winding knob 17 and the rod 16a.
6, 47 are provided.

3 to 5 showing the film-loading production line, FIG. 4 shows the whole arrangement of the production line, and FIG. 3 is a plan view of a part thereof, showing the base plate 48 and the loading line. The positional relationship with the station 49 is shown. As shown in FIGS. 3 and 5, the base plate 4
Frames 48a and 48b are provided on the frame 8, and an automatic loading device 53 is provided at a position facing the frame 48a. A plurality of units of the base plate 48 are attached to the conveyor belt 54 for use. Conveyor belt 54
Is step-fed to the right in FIG. 4 by a well-known drive mechanism, and passes through the dark room 55 in the middle. A film unit supplying step 56, a cartridge / winding shaft supplying step 57, a rear cover fixing step 58, and a dark room working step 6 respectively corresponding to the feeding position of the conveyor belt 54.
3. The product take-out process 62 is determined. The darkroom working process 63 is further separated from the check claw releasing process 59, the film feeding / winding process 60, and the winding shaft extracting process 61.

In FIG. 7, which conceptually illustrates the structure of the automatic loading device 53, the sandwiching claw 64 engages with the end portion of the spool 4 housed in the photographic film cartridge 2 to transmit the rotation of the motor and to sandwich it. The photo film cartridge 2 can be held. The sandwiching claw 64 is provided on the front surface of the main body 65 of the automatic loading device 53.
6 and synchronizes with the rotation of a gear 67 provided at the rear. On the left side surface of the main body 65 in the figure, the connecting arm 6
8 is mounted so that it can move vertically.
A film winding shaft driving unit 69 is provided at the other end of the connecting arm 68, and a rotary shaft 71 having a film winding shaft 70 at its tip drives in synchronization with the rotation of the rear gear 72.

Drive gear 73 on the loading station 49 side
Is engaged with the gears 67 and 72, and the loading station 4
The rotation of the motor provided on the 9 side is transmitted. Also,
The holding release of the photo film cartridge 2 and the restriction or release of the reverse rotation of the film winding shaft 70 are controlled by a predetermined switch provided on the automatic loading device 53 when the core rods 74 and 75 project from the loading station 49 side. Manipulate. The winding shaft 70 has a plurality of protruding claws 70a around the shaft, and the pitch thereof is the same as the pitch of the take-up perforation of the film tip 5a, and the film tip 5a is captured without being bent or damaged. be able to.

A method of loading the photographic film cartridge 2 into the film unit by the film loading production line constructed as described above will be described. First, in the unit supply step 56 shown in FIG. 4, at the predetermined positions of the frames 48a and 48b on the empty base plate 48, as shown in FIG. The cover 22 is supplied manually. In the cartridge / winding shaft supply step 57, the loading station 4
9, the photo film cartridge 2 in which the film tip 5a of the unexposed film 5 is also wound and stored in the cartridge main body 3 is stored in the cartridge chamber 25 of the main body 20 supplied in the unit supplying step 56. To do. Also,
The film winding shaft 70 is inserted into the film roll chamber 24 of the main body 20.

For this reason, a loading station 49 is provided in the cartridge / winding shaft supply process 57.
The main body 65 of the automatic loading device 53 is pushed out by a constant stroke. The holding claw 64 at the tip of the arm 66 provided on the front surface of the main body 65 is engaged and held in advance with the end of the spool 4 in the photographic film cartridge 2, and the photographic film cartridge 2 is held by the holding claw 64. It stays in the cartridge chamber 25 while maintaining the engagement. At the same time, the film take-up shaft 70 held by the rotary shaft 71 on the front surface of the film take-up shaft drive section 69 is also moved to the film roll chamber 24.
Get inside. At this time, the position of the winding shaft 70 is previously positioned at an appropriate position by the connecting arm 68.

Subsequently, when the base plate 48 moves to the rear cover fixing step 58, the rear cover 22 supplied to a predetermined position on the base plate 48 by a robot hand or the like opens the film roll chamber lid 50 and the cartridge chamber lid 51. Meanwhile, the main body 20 is moved and placed so as to cover the back surface thereof. Further, a certain pressure is applied and fixed so that the locking projections 30 and 31 provided on the bottom surface of the main body portion 20 and the locking holes 33 and 32 provided on the bottom surface of the rear cover 22 are locked. The rear cover 22 is fixed in a state where the arm 66 is opened from the cartridge chamber 25 and the rotary shaft 71 is opened from the film roll chamber 24 and the film roll chamber lid 50 and the cartridge chamber lid 51 are opened and projected.

When the conveying belt 54 is step-fed and the automatic loading device 53 together with the base plate 48 is moved to the dark room working process 63, the check claw releasing process 59 is first performed by the mechanism provided in the base plate 48. First, when the main body 20 is preliminarily loaded on the base plate 48, the projection provided on the frame 48a pushes the shutter button 16 to the shutter release position, and the rod integrally formed under the shutter button 16 is formed. 16a presses the bent piece 36a of the locking lever 36,
The locking lever 36 is rotated counterclockwise in FIG. By this rotation, the winding stop claw 36b for preventing the rotation of the winding knob 17 provided on the locking lever 36 is provided in the tooth row portion 17a.
Further retract and unlock the winding knob 17. At the same time, the claws that are in contact with the cam 35 also retract, so that the locking of the cam 35 by the locking lever 36 is also released.

In the check claw releasing step 59, the mechanism provided in the base plate 48 causes the check claw 17b, which is a leaf spring engaged with the tooth row portion 17a of the winding knob 17, to be released.
Through the opening 46 provided in the front cover 21, the base plate 48 side is pulled to release the engagement with the tooth row portion 17a. Further, the claw 42a of the shutter drive lever 42 is in contact with a shutter charging cam that is integrally formed with the cam 35, and restricts the rotation of the sprocket 29. Then, the shutter drive lever 42 is rotated clockwise in FIG. 6 through the opening 47 provided in the front cover 21 by the mechanism provided in the base plate 48 to move the cam 3
The claw 42a is retracted from 5. As described above, the shutter button 16 is pushed in by the protrusion provided on the frame 48a, and the mechanism provided in the base plate 48 has the check claw 17b.
By pulling and rotating the shutter drive lever 42, the winding knob 17 and the sprocket 29 can freely rotate.

When the check claw is released, the base plate 4
8 is again stepwise fed by the conveyor belt 54, and moves to the film feeding / winding step 60. When the base plate 48 comes to a predetermined position and stops, the drive gear 73 projects from the loading station 49 and meshes with the gear 67 and the gear 72 of the automatic loading device 53. When the drive gear 73 rotates in the X direction as shown in FIG. 7, the gear 67 meshed with the drive gear 73 rotates in the Y direction, and rotates the spool 4 in the film feeding direction via the holding claw 64.
At this time, the film winding fork 26 integrally formed at the end 4c of the spool 4 and the lower portion of the winding knob 17 is used.
, And the winding knob 17 rotates together with the winding knob 17 in the film feeding direction, but there is no problem because the rotation restriction is released in the check claw releasing step 59. Since the photo film cartridge 2 winds the film 5 around the spool 4 without loosening it, the film 5 also rotates as the spool 4 rotates. When the film front end portion 5a moves to a position facing the discharge port 11, it is scooped up by the front end separation claw 12, and the spool 4 is driven continuously.
The film tip portion 5a is sent out from the discharge port 11 through the space between the telemeters 10.

The leading end 5a of the film sent out of the cartridge main body 3 is located between the film rails 27 and 28 provided on the main body 20 of the film unit and the film regulating surface 34 provided on the rear cover 22. The passage is sent to the film roll chamber 24. The sprocket 29 protruding above the film rail 27 is a perforation 5b of the film 5 moving in the film passage.
The film 5 rotates with the movement of the film 5, but since the restriction of the rotation is released in the check claw releasing step 59, there is no problem. The rotation of the drive gear 73 on the loading station 49 side in the X direction causes the gear 72 to rotate in the Z direction at the same time as the gear 67, so that the film winding shaft 70 rotates in the film winding direction in the film roll chamber 24. .. The film tip portion 5 that has moved to the film roll chamber 24
In a, the perforations 5b are captured by a plurality of protruding claws 70a provided around the winding shaft 70,
The film 5 is wound around the film winding shaft 70.

In order to ensure the capture of the film tip portion 5a of the film winding shaft 70, the film winding shaft 7
It is desirable that the rotation speed of 0 is twice or more the traveling speed of the film 5. Therefore, the gear 67 and the gear 7 of the automatic loading device 53 that are simultaneously rotated by one drive gear 73.
By setting the tooth ratio of 2 to 2: 1, the rotational linear velocity of the film winding shaft 70 was doubled to the running speed of the film 5. The drive gear 73 is driven by a motor provided in the loading station 49, and a slip mechanism is additionally provided in this drive system so that the drive gear 73 is rotated with a predetermined torque. Further, when the film take-up shaft 70 captures the film tip portion 5a,
The holding claws 64 rotate at the same rotation speed as the film winding shaft 70. For this reason, there is a difference in rotation speed between the gear 67 and the sandwiching claw 64, but this is absorbed by the clutch mechanism provided in the arm 66.

The film 5 is wound into the film roll chamber 24 by the rotation of the film winding shaft 70, and when it is completely wound, the loading station 49 is loaded.
Detects the torque of the drive gear 73 and stops the motor.
Even during film winding, a slight back tension is applied to the film 5 to rotate the spool 4 and the like, so that the film 5 can be wound on the film winding shaft 70 without slack. Motor stops and drive gear 73
When the rotation is stopped, all the films 5 in the photographic film cartridge 2 are pulled out to the film winding shaft 70, and the film roll is formed in the film roll chamber 24.

When the drive gear 73 stops, the drive gear 73 retreats from between the gears 67 and 72, and the base plate 48 is step-fed again by the conveyor belt 54 and moves to the winding shaft extracting step 61. Since the film winding shaft 70 is provided with a reverse rotation restricting mechanism, the film roll will not be loosened by the elasticity of the film 5 during the transfer by the conveyor belt 54. Core rod 7 from the loading station 49 side
4, 75 are projected and the photo film cartridge 2 of the holding claw 64 provided at a predetermined position of the automatic loading device 53.
Is released and the switch for releasing the restriction of the reverse rotation of the film winding shaft 70 is operated to withdraw. After that, the drive gear 73 protrudes from the loading station 49 side,
The gear 67 meshes with the gear 67 and the gear 72 of the automatic loading device 53, and slightly rotates in the direction opposite to the above-described film feeding / winding step 60 and retreats. At this time, the film winding shaft 70
Only the arm 66 is rotated by the clutch mechanism.

By this reverse rotation, the film winding shaft 70
The engagement between the projection claw 70a and the perforation 5b provided on the film is released, the film roll is loosened, and a gap is formed between the film winding shaft 70 and the innermost circumference of the film roll. Automatic loading device 53 by loading station 49
When the main body 65 of the film is pulled back by a constant stroke, the holding claw 64 retreats from the spool end 4c, and at the same time, a gap is formed between the film winding shaft 70 and the innermost circumference of the film roll. Leave from 24.
The film roll chamber lid 50 and the patrone chamber lid 51, which are still released, are moved to a closed position by a robot hand or the like and pressed to be fixed in a fitting manner. The photographic film cartridge 2 and the film roll are hermetically sealed in the unit body 13.

At this point, the lens-fitted film unit is completed as a product. The completed film unit is sent from the dark room 55 to the bright room by the next step feed of the transport belt 54. Then, in the product removing step 62, the product is taken out from the base plate 48, undergoes an inspection, etc., and then is packed in the paper box 14. A new main body 20 and a rear cover 22 are manually supplied and assembled to the vacant base plate 48 in the next unit supply step 56, so that in the product take-out step 62, products are successively fed at each step feed. Sent out.

Further, the film unit can be assembled by the film loading production line as shown in FIG. Similar to the above embodiment, the unit supply step 76
In FIG. 5, the main body 20 (the front cover 21 is fixed) and the rear cover 22 are manually supplied to predetermined positions of the frames 48a and 48b on the empty base plate 48, as shown in FIG. The base plate 48 supplied with the unit is sent to the dark room 55 by the next step feed of the transport belt 54. Film feeding and winding process 7
In FIG. 7, the patrone holding arm (not shown) of the automatic loading device 53 shown in FIG. 9 holds the photo film patrone 2 stored by being wound up in the patrone main body 3 up to the film leading end 5a, and also has a holding claw. 64 engages with the end of the spool 4.

The connecting arm 68 connecting the main body portion 65 of the automatic loading device 53 and the film winding shaft driving portion 69 drives the film winding shaft so that the distance between the two can be freely changed within a predetermined range. It supports the part 69. In the film feeding / winding process 77, first, the length of the connecting arm 68 is set so that the film winding shaft 70 is positioned immediately before the film discharge port 11 of the photo film cartridge 2. Drive gears 90 and 91 provided in the loading station 49 are sent out and mesh with gears 67 and 72 provided in the automatic loading device, respectively.
When the gear 67 is rotated by the drive gear 90, the photo film cartridge 2 held by the cartridge holding arm 2
The spool 4 rotates in the feeding direction of the film 5 via the holding claw 64. By the rotation of the spool 4, the film 5 is scooped up by the tip separation claw 12 provided on the cartridge body 3 as described above, and is sent out from the film discharge port 11.

On the front surface of the film discharge port 11, the film take-up shaft 70 rotates the rotation of the drive gear 91 via the gear 72 and the rotary shaft 71 at a rotation linear velocity twice the film traveling speed. The film tip portion 5a sent out from the film discharge port 11 is guided by the guide member 83 protruding from the loading station 49 and moved so as to come into contact with the film take-up shaft 70, and around the film take-up shaft 70. The perforations 5b are captured by the plurality of protruding claws 70a provided. When the film take-up shaft 70 catches the film tip portion 5a, the holding claw 6
4 rotates at the same rotation speed as the film winding shaft 70, but the rotation speed of the gear 67 is absorbed by the clutch mechanism provided in the arm 66. When the loading station 49 detects a change in the torque of the drive gear 91, the core rod 92 projects and the holding claw 64 releases the holding of the spool 4. Continue film winding shaft 7
When 0 winds up the film 5, the connecting arm 68 extends and the distance between the main body portion 65 and the film winding shaft drive portion 69 gradually increases.

When all the unexposed film 5 stored in the photographic film cartridge 2 is pulled out and the film roll has been formed around the film winding shaft 70, the drive gear 93 stops rotating. The distance between the main body portion 65 and the film winding shaft driving portion 69 is such that the film roll formed around the photographic film cartridge 2 and the film winding shaft 70 is located in the cartridge chamber 2 of the unit main body 13.
5 and the opening provided in the bottom surface of the film roll chamber 24 to a position facing the opening, and the extension of the connecting arm 68 is stopped. When the film winding is completed, the core rod 93 provided on the side of the loading station 49 is projected and the reverse rotation of the rotary shaft 71 is operated by operating the regulation switch to retreat. After that, the drive gears 90 and 91 are connected to the gear 6 of the automatic loading device 53.
Move away from the meshing position with 7,72. The finished film roll 5c is prevented from being loosened because the reverse rotation of the rotary shaft 71 is restricted.

The base plate 48 is again conveyed by the conveyor belt 54.
Is step-fed and moves to the cartridge / winding shaft supply step 78. As shown in FIG. 10, the film 5 stretched between the photo film cartridge 2 and the film winding shaft 70 is attached to the main body 20 of the film unit.
The cartridge chamber 25 and the film roll chamber 24 are loaded from the bottom opening. However, since the film rails 27 and 28 provided above and below the exposure frame 23 are curved in the rear cover direction, the film supporting member 94 projects from the loading station 49 and the vicinity of the center of the film 5 is extended. Lift to the top. Patrone holding arm,
The photographic film cartridge 2 and the film roll 5c held by the rotating shaft 71 and the film supporting member 94 are loaded in predetermined positions of the main body 20 by moving the automatic loading device 53 in the axial direction of the photographic film cartridge 2. It After loading, the cartridge holding arm and the film support member 94 retract from their respective positions.

When the base plate 48 is moved to the rear cover fixing step 79 by the step feed of the conveyor belt 54, the base plate 4 is moved by, for example, a robot hand.
The rear cover 22, which is supplied to a fixed position above 8, is moved and placed so as to cover the back surface of the main body 20 while opening the film roll chamber lid 50. Further, a fixed pressure is applied and fixed so that the locking projections 30 and 31 provided on the bottom surface of the main body 20 and the locking holes 33 and 32 provided on the bottom surface of the rear cover 22 are locked. The rear cover 22 is fixed from the film roll chamber 24 in a state where the rotary shaft 71 is projected by opening the film roll chamber lid 50. In the subsequent steps, the winding shaft removing step 80 and the product removing step 81 are performed as in the first embodiment, and the film loading in the film unit is completed. In the manufacturing line shown in FIG. 8, the process from the film feeding / winding process 77 to the winding shaft extracting process 80 is a dark room working process 82.
Therefore, the work is performed in the dark room 55.

Further, the film unit can be assembled by the film loading production line as shown in FIG. Let me briefly explain this flow. Similar to the above-mentioned two types of production lines, the unit supply process 95
At, the main body 20 and the rear cover 22 are manually supplied to the base plate 48. In the film feeding / capturing step 96, the unexposed film 5 from the photographic film cartridge 2 is loaded by the automatic loading device 53 shown in FIG.
The spool 4 is rotated and sent out, and the film discharge port 11
The film take-up shaft 70 that rotates in front of the film captures the film.
When the film take-up shaft 70 captures the film front end portion 5a, the drive gears 90 and 91 stop once, and the rotating shaft 7
After the reverse rotation of No. 1 is restricted, the gear 67, 72 is retracted from the meshing position.

When stepwise sent to the cartridge / winding shaft supplying step 97, the connecting arm 68 moves to a position where the film winding shaft 70 is loaded into the film roll chamber 24. While the film 5 spread between the photo film cartridge 2 and the take-up shaft 70 is lifted slightly upward by the film support member 94 provided at the loading station 49, the automatic loading device 53 causes the photo film cartridge 2 shaft. The film winding shaft 7 which moves in the direction and captures the photographic film cartridge 2 and the film tip 5a.
0 is loaded into the film unit at a predetermined position. In the rear cover fixing step 98, a robot hand or the like is used to project the arm 66 from the cartridge chamber 25 and the rotary shaft 71 from the film roll chamber 24 with the film roll chamber lid 50 and the cartridge chamber lid 51 open and protruding. Cover 2
2 is fixed.

In the non-return pawl releasing step 98, the winding knob 17 and the sprocket 29 can be freely rotated by the mechanism described in the explanation of the manufacturing line of FIG. In the next film winding process 100, the film winding shaft 70 completely winds the film 5 in the photographic film cartridge 2 and forms the film roll 5c in the film roll chamber 24. Thereafter, as in the case of the above-mentioned two types of production lines, the winding shaft extraction process 101 and the product removal process 102 are performed, and the film loading into the film unit is completed. In the manufacturing line shown in FIG. 11, the process from the film feeding / capturing process 96 to the winding shaft extracting process 101 is a dark room working process 103, which is a work in the dark room 55.

In the three types of production lines in which the method for producing a lens-fitted film unit of the present invention is carried out,
After forming the film roll, the winding shaft removal step 6
Although the film winding shaft 70 is pulled out by 1, 80 and 101, it is also possible to leave the winding shaft 70 inside the unit main body 13 with the film roll wound, and to withdraw only the rotating shaft 71.

[0043]

As described above, according to the method of manufacturing the lens-fitted film unit of the present invention, the structure of the conventional film unit is changed in the photo film cartridge of the type in which the spool is rotated in the film feeding direction to feed the film. The film roll can be easily loaded without any damage, and a film roll can be manufactured from a photographic film cartridge in which even the leading end of the film is wound in the main body of the film without damaging the leading end of the film.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a film unit according to the present invention.

FIG. 2 is an external perspective view of a film unit according to the present invention.

FIG. 3 is a plan view illustrating a part of the production line according to the present invention.

FIG. 4 is a side view illustrating an overall arrangement of a production line according to the present invention.

FIG. 5 is a perspective view of an essential part of a base plate on a manufacturing line according to the present invention.

FIG. 6 is an exploded perspective view of another portion of the film unit shown in FIG.

7 is an explanatory view of an automatic loading device provided in the manufacturing line shown in FIG.

FIG. 8 is a side view illustrating an overall arrangement of a manufacturing line different from the manufacturing line shown in FIG.

9 is an explanatory view of an automatic loading device provided in the manufacturing line shown in FIG.

10 is an explanatory diagram illustrating a part of the work in the manufacturing line illustrated in FIG. 8.

FIG. 11 is a side view illustrating an overall arrangement of a manufacturing line different from the manufacturing line illustrated in FIGS. 4 and 8.

FIG. 12 is an exploded perspective view of a photographic film cartridge according to the present invention.

[Explanation of symbols]

 2 Photo film cartridge 4 Spool 5 Film 5c Film roll 13 Unit body 16 Shutter button 16a Rod 17 Winding knob 17b Check claw 20 Body 22 Rear cover 24 Film roll chamber 25 Patrone chamber 29 Sprocket 35 Cam 36 Locking lever 48 Base plate 49 Loading station 50 Film roll chamber lid 51 Patrone chamber lid 53 Automatic loading device 54 Conveyor belt 55 Dark chamber 64 Clamping claw 70 Film winding shaft 73 Drive gear

Claims (6)

[Claims] 1. A film roll chamber and a cartridge chamber provided in a unit main body part respectively store a roll-shaped film and a cartridge main body in advance, and after the photographing, the winding knob is rotated to one side to rotate the cartridge. In a method of manufacturing a film unit with a lens in which a spool provided in the main body is rotated in a winding direction so that a film is wound in the cartridge main body, the tip of the film is rotated from the inside of the cartridge main body by rotating the spool in a delivery direction. A first step of loading a film cartridge with a structure for sending out the film into the cartridge chamber, and inserting a winding shaft having a capturing means at the leading end of the film into the film roll chamber, and attaching the rear cover to the rear surface of the unit main body. Second that covers the chamber and the film roll chamber
Steps, a third step of releasing the check claw that prevents the winding knob from rotating to the other side, and rotating the spool in the delivery direction to deliver the leading end of the film from the cartridge body to the film roll chamber. And a step of rotating the winding shaft at a speed higher than the feeding speed of the film, causing the catching means to catch the leading end of the film, and winding the film around the winding shaft in a roll shape. A method for manufacturing a film unit with a lens. 2. The method for producing a lens-fitted film unit according to claim 1, further comprising a fifth step of pulling out the winding shaft after winding the film in a roll shape. 3. The lens according to claim 1, wherein after winding the film into a roll, the winding shaft is separated from an external drive mechanism and left in the film roll chamber together with the roll-shaped film. Method of manufacturing film unit. 4. The film roll chamber and the cartridge chamber provided in the unit main body are pre-stored with the roll-shaped film and the cartridge main body, and the film winding knob is turned to one side after photographing to rotate the cartridge. In a method of manufacturing a film unit with a lens in which a spool provided in the main body is rotated in a winding direction so that a film is wound in the cartridge main body, the tip of the film is rotated from the inside of the cartridge main body by rotating the spool in a delivery direction. The first step of holding the photo film cartridge of the feeding structure outside the main body of the unit and facing the winding shaft so as to sandwich the film guiding means between the photo film cartridge and the photo film cartridge, and driving the spool in the film feeding direction. Direct the tip of the film from the cartridge body to the winding shaft through the film guiding means. A second step of feeding Te, a third step of winding the film into a roll by driving the captured winding shaft tip portion of the film in the winding axis,
A fourth step of setting the winding shaft around which the film is wound into a roll and the cartridge body in the film roll chamber and the cartridge chamber of the unit body, respectively, and then mounting a rear cover on the back surface of the unit body to cover both chambers. A method for manufacturing a film unit with a lens, comprising: 5. The method according to claim 4, further comprising a step of adjusting the distance between the cartridge body and the winding shaft so as to match the distance between the cartridge chamber and the film roll chamber before the fourth step. Method for manufacturing a film unit with a lens of. 6. The method of manufacturing a lens-fitted film unit according to claim 4, wherein the winding shaft is separated from an external drive mechanism and left in the film roll chamber together with the roll-shaped film.