JP3271503B2 - Spool positioning device for film attachment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a spool positioning device for positioning an attachment portion of a spool at a position suitable for a film attachment position when a film is attached to rewind a film into a cartridge. is there.

[0002]

2. Description of the Related Art In general cartridges, a film outlet is shielded from light by a black cloth. Recently, a cartridge C capable of storing and storing a developed film has been proposed. In this cartridge C, a shutter C2 is attached to the film entrance C1 so as to be freely opened and closed (FIG. 5).
And FIG. 7), the spool C4 is provided with an attachment portion C42 formed by a hooking claw (FIGS. 6 and 7), and is configured so that the leading end of the film F is hooked onto the attachment portion C42 and wound up. ing.

When the cartridge C is located at the film rewinding section of the film developing apparatus, the operation of attaching the film F to the spool C4 of the cartridge C is performed. This attaching operation is performed using an attaching tool 51 that enters the cartridge C at a predetermined angle as shown in FIGS. That is, the center attaching hole F1 at the end of the film F is hooked on the hooking claw 50 formed at the tip of the attaching tool 51, and the tip of the attaching tool 51 is caused to enter the cartridge C through the film entrance C1 of the cartridge C. This is performed by hooking a side attach hole F2 at the end of the film F on the attach portion C42 of the spool C4.

However, in such attaching work,
Attach portion C42 of spool C4 is attached to attach tool 5
Since it is premised that the film F inserted in the cartridge C at 1 is located at a position where the film F can be hooked (the film attach position shown in FIG. 8), the attach portion C42 is previously located at the film attach position. Thus, it is necessary to adjust the rotation angle of the spool C4.

In order to adjust the rotation angle of the spool C4, as shown in FIG. 10, the spool rotation shaft 102 is inserted into the shaft hole C40 of the spool C4 of the cartridge C located at the film winding section 101 of the film developing apparatus. It is performed by fitting and rotating the spool C4. That is, the positional relationship (shown in FIG. 6) of the attachment portion C42 in the rotation direction of the attachment portion C42 with respect to the key groove C41 of the spool C4 of the cartridge C is considered, and the key 103 of the spool rotation shaft 102 matches the key groove C41 of the spool C4. It is assumed that the key 1 of the spool rotation shaft 102 is
03, the position of the attachment portion C42 of the spool C4 can be grasped.
By stopping the key 103 of 02 at a predetermined position, the attachment portion C42 of the spool C4 can be located at the film attachment position.

Therefore, the angle adjustment of the spool C4
It is assumed that the key 62 of the spool rotation shaft 61 and the key groove C41 of the spool C4 are surely aligned. However, the key groove C41 of the spool C4 of the cartridge C located at the film winding section 101 of the film developing processing apparatus.
And the key 103 of the spool rotation shaft 102 do not always match, and if the spool rotation shaft 102 is forcibly inserted into the shaft hole C40 of the spool C4 in a state where they do not match, the cartridge C is broken. There was a problem.

Therefore, as shown in FIG. 11, a key 103 is attached to the outer periphery of the spool rotating shaft 102 by a spring 104 so as to be able to protrude and retract, and the key
When the key groove 3 and the key groove C41 of the spool C4 do not coincide with each other, a device has been proposed in which the key 103 is retracted so that the spool rotation shaft 102 can be inserted into the shaft hole C40 of the spool C4.

[0008]

However, when such a conventional apparatus is employed, when the spool rotating shaft 102 is rotated, the key 103 of the spool rotating shaft 102 and the spool C are rotated.
Even if the 4 keyways C41 do not match, the spool C4 may rotate due to frictional force. In this state, if an attempt is made to determine the rotation angle of the spool C4 for film attachment, the attachment portion C42 of the spool C4
However, there is a problem that the film cannot be attached because it is not located at the film attaching position.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to prevent the cartridge from being damaged by a spool rotating shaft, and to use a key for the spool rotating shaft as a key for the spool. An object of the present invention is to provide a spool positioning device for film attachment which can determine a rotation angle of a spool in a state where the spool is securely fitted to a groove.

[0010]

According to the present invention, there is provided a spool positioning device for attaching a film, wherein a key of a spool rotating shaft coincides with a keyway of a shaft hole of a spool of a cartridge, and a spool rotating shaft is aligned with a keyway of the spool. By rotating the spool rotating shaft with the driving means in the fitted state, the spool positioning device for film attachment that positions the film winding attachment portion of the spool at the film attachment position is elastic toward the cartridge. When the key is biased and the key does not match the key groove of the shaft hole of the spool of the cartridge, the spool rotating shaft pushed back by the cartridge and the spool rotating shaft when the pushed spool rotating shaft is detected are turned on. Rotate and the spool rotation shaft fits into the shaft hole of the cartridge spool. Therefore, when the spool rotation axis is not detected, the spool rotation axis detection sensor that stops the spool rotation axis, the detection body that rotates together with the spool rotation axis, and the detection body when the spool attach unit is located at the film attach position, And a spool rotation angle control sensor for detecting and stopping the spool rotation shaft.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a cartridge C with a shutter C2 will be described with reference to FIG. A shutter C2 is pivotally supported at the film entrance C1 of the cartridge C so as to be openable and closable, and a disk C3 with a barcode for providing film information is attached to the spool C4.

When the shutter C2 is closed, the spool C4 is locked by a cam mechanism (not shown) to prevent the disc C3 with a bar code from being displaced. When the shutter C2 is opened, the spool C4 is locked by the cam mechanism. Is released so that the spool C4 can rotate. A keyway C41 is provided at the shaft end of the spool C4.
A shaft hole C40 is formed, and a shaft hole C21 is provided at an end of the shutter C2.

Next, the automatic film processing apparatus will be described. The automatic film processing apparatus pulls out the undeveloped film F from the cartridge C and develops the film.
A case supply unit 1 for rewinding the developed film F1 back to the original cartridge C, and for supplying a storage case A containing the cartridge C containing the undeveloped film F one by one as shown in FIG. And this case supply unit 1
The film rewinding unit 2 for pulling out the undeveloped film F from the cartridge C of the storage case A supplied by the rewinding cartridge 21 and rewinding the film to the rewinding cartridge 21 and the film rewinding unit 4 supplied from the film reader supplying unit 3 A splicing section 5 for splicing the undeveloped film F wound around the cartridge 21; a developing section 6 for developing the undeveloped film F spliced by the film reader 4; And a transport belt 10 for transporting the storage case A, in which the undeveloped film F is pulled out and the empty cartridge C is stored, from the film rewinding unit 2 to the film rewinding unit 9. Then, the storage case A containing the cartridge C on which the developed film F1 has been rewound is stored. Case stock portion 11 for click
It is composed of

In the film rewinding section 9, the cartridge C of the storage case A located in the film rewinding section 9
A rewinding device for rewinding the developed film F1 separated from the film reader 4 is provided. The rewinding device includes an attach tool 12, a shutter opening / closing device (not shown), and a spool positioning device 8. .

The attachment tool 12 employs the same configuration as that described in the prior art.

The shutter opening / closing device is constituted by a shutter rotating shaft (not shown) rotated by a driving means (not shown). The shutter C2 of the cartridge C is opened and closed by rotating the shutter rotating shaft with the tip of the shaft fitted.

Next, the spool positioning device 8 will be described with reference to FIG. 8A is the spool C4 of the cartridge C
And a spool rotating shaft 8 for rotating the spool rotating shaft 8.
A key 81A protrudes from the tip of A. A mounting hole 82A is formed in the middle of the spool rotation shaft 8A in the radial direction. A parallel pin 83A is inserted into the mounting hole 82A, and both ends of the parallel pin 83A protrude from the outer periphery of the spool rotation shaft 8A. ing.

The spool rotation shaft 8A is connected to a drive shaft of a motor (drive means) via a transmission mechanism, and is driven to rotate by the drive shaft of the motor. 8H is a gear constituting a part of the transmission mechanism, and has a central hole 81H of the gear 8H.
A cylindrical body 8G is attached to the edge of the cylindrical body. A pair of long holes 81G are formed in the length direction of the cylindrical body 8G, and a spring storage recess 8I is formed on the inner peripheral side of the cylindrical body 8G.

Reference numeral 8B denotes a mounting body, and a mounting hole 8C is formed in the mounting body 8B. A first bearing 8D and a second bearing 8E are mounted on both ends of the mounting hole 8C, an outer cylinder 8F is integrally mounted on the first bearing 8D, and a gear 8H and a cylindrical body 8G are integrally mounted on the second bearing 8E. ing.

Then, the spool rotation shaft 8A has an outer cylinder 8F,
It is loosely fitted in the central hole 81H of the gear 8H and the cylindrical body 8G. Both ends of the parallel pin 83A of the spool rotation shaft 8A are loosely fitted in the elongated holes 81G of the cylindrical body 8G of the gear 8H. A spring body (coil spring) 8J, which is a compression spring, is housed in a spring housing recess 8I of the cylindrical body 8G, and the spool rotating shaft 8A is moved by the spring body 8J in the direction of the cartridge C located in the film rewinding section 9. The spring is biased.

S1 is a transmission type spool rotation axis detection sensor for detecting the rear end (indicated by a two-dot chain line in FIG. 2) of the spool rotation axis 8A withdrawn from the cartridge C located at the film rewinding section 9. Then, the drive circuit of the motor M1 is turned on to rotate the spool rotating shaft 8A. As shown by a solid line in FIG.
When the rear end of A comes off the spool rotation axis detection sensor S1, the drive circuit of the motor M1 is turned off and the rotation of the spool rotation axis 8A stops.

Reference numeral 8K denotes a disk-shaped detector, in which a through hole 80K into which the spool rotating shaft 8A is loosely fitted is formed in the center, and a notch 81K is provided in the outer peripheral portion (FIG. 2). ,
(Fig. 3). S2 is a spool rotation angle control sensor,
By detecting the notch 81K of the detector 8K, a control signal is output to turn off the drive circuit of the motor M1.

The detecting body 8K is integrally attached to the gear 8H, and the insertion hole 80K of the detecting body 8K matches the central hole 81H of the gear 8H. The rotation of the gear 8H rotates together with the spool rotation shaft 8A. The key 81A of the spool rotation shaft 8A and the cutout 81 of the detection body 8K are formed.
When the spool rotation angle control sensor S2 detects the notch 81K, the spool C4
Is set to stop at the above-described film attachment position (shown in FIG. 8). That is, the key groove C41 of the spool C4 and the attachment portion C42
6 in consideration of the rotational direction (shown in FIG. 6), and the key 81A of the spool rotating shaft 8A is
4, the notch 81K of the detector 8K is detected by the spool rotation angle control sensor S2 when the attachment portion C42 of the spool C4 is located at the film attachment position. Is set to the position of the notch 81K.

The spool positioning device 8 also has a function of rotating the spool C4 with the spool rotating shaft 8A to take up the film into the cartridge C, and reversing the spool C4 to feed out the film from the cartridge C. .

Each part of the spool positioning device for film attachment is controlled by a controller (not shown).

Next, an attachment portion C42 of the spool C4 for film attachment by the spool positioning device 8
Will be described. (1) When the empty cartridge C in the storage case A sent from the film rewinding unit 2 is located at the film rewinding unit 9, the shutter C2 of the cartridge C is closed, and therefore, the spool C4 is locked and the spool C4 is locked. The rotation of C4 is regulated.

The key 81A of the spool rotating shaft 8A
When the keyway C41 of the spool C4 does not match,
The spool rotating shaft 8A is moved by the spring C
Retracted by being pushed back against the spring force of J (Fig. 2 (A)
Is indicated by a two-dot chain line). When the empty cartridge C is located in the film rewinding section 9, the spool rotating shaft 8
The projecting position of the spool rotation shaft 8A is set so that the axis of the spool A coincides with the axis of the spool C4 of the cartridge C. Therefore, the tip of the spool rotation shaft 8A that has been retracted is positioned at the shaft hole C40 of the spool C4 of the cartridge C. Press against

(2) When the spool rotation shaft 8A retreats, the spool rotation shaft detection sensor S1 detects the rear end of the spool rotation shaft 8A, and turns on the drive circuit of the motor M1 to rotate the spool rotation shaft 8A. . At this time, since the shutter 2C of the cartridge C is closed and the spool C4 is locked, the spool C4 does not rotate due to frictional force. (3) As a result of rotating the spool rotating shaft 8A, when the key 81A of the spool rotating shaft 8A matches the key groove C41 of the shaft hole C40 of the spool C4, the spool rotating shaft 8A is moved by the spring force of the spring body 8J. It fits in the shaft hole C40.

When the spool rotation shaft 8A is fitted into the shaft hole C40 of the spool C4, as shown by the solid line in FIG.
1, the drive circuit of the motor M1 is turned off, and the spool rotating shaft 8A stops. (4) Next, the shutter C2 is opened by the shutter opening / closing device 9.
Is opened to enable film attachment from the film entrance C1 of the cartridge C and unlock the spool C4. (5) Next, the drive circuit of the motor M1 is turned on to rotate the spool rotation shaft 8A. (6) When the spool rotation angle control sensor S2 detects the notch 81K of the detector 8K, the spool rotation angle control sensor S2 outputs a control signal to turn off the drive circuit of the motor M1. As a result, the attachment portion C42 of the spool C4 is stopped and positioned at the film attachment position. (7) Attachment part C4 of spool C4 of cartridge C
When 2 is located at the film attaching position, as described above, the developed film F1 is hooked on the attaching portion C42 of the spool C4 using the attaching tool 12, and the film is attached. Then, the developed film F1 is rotated by rotating the spool rotation shaft 8A to remove the spool C of the cartridge C.
4 to complete the rewinding of the developed film F1 to the cartridge C.

[0030]

As is apparent from the above description, according to the spool positioning device for film attachment of the present invention, when the key of the spool rotating shaft does not match the key groove of the spool of the cartridge, Since the rotating shaft is withdrawn from the cartridge, the cartridge is not broken by the spool rotating shaft.

In addition, since the film attachment position of the spool attachment portion can be determined in a state where the key of the spool rotation shaft is securely aligned with the key groove of the spool of the cartridge, the film attachment position is reliably determined. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an automatic film processing apparatus.

FIG. 2A is a sectional view of a spool positioning device for film attachment according to the present invention, and FIG. 2B is an exploded perspective view of the device.

FIG. 3 is a front view of a detection body of the spool rotation angle control sensor of the embodiment.

FIG. 4 is a perspective view of a cartridge with a shutter.

FIG. 5 is a perspective view of a cartridge with a shutter.

FIG. 6 is a perspective view of a spool of the cartridge.

FIG. 7 is a sectional view of the cartridge.

FIG. 8 is a sectional view showing an operation for attaching a film using an attach tool.

FIG. 9 is a perspective view showing the same operation.

FIG. 10 is a perspective view showing a setting operation of the cartridge.

FIG. 11 is a sectional view showing a conventional example.

[Explanation of symbols]

 8A Spool rotation shaft 81A Key 8J Spring body 8K Detector S1 Pool rotation shaft detection sensor S2 Spool rotation angle control sensor C Cartridge C4 Spool C40 Shaft hole C41 Spool keyway C42 Attachment

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-110183 (JP, A) JP-A-7-261363 (JP, A) JP-A-7-219200 (JP, A) JP-A-7-219 261362 (JP, A) JP-A-4-142540 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03D 13/00

Claims (1)

(57) [Claims] The spool rotating shaft is rotated by a driving means in a state in which the key of the spool rotating shaft matches the key groove of the shaft hole of the spool of the cartridge and the spool rotating shaft is fitted in the key groove of the spool. Thus, in the spool positioning device for film attachment that positions the film winding attachment portion of the spool at the film attachment position, the cartridge is elastically urged toward the cartridge, and the key is formed in the keyway of the shaft hole of the spool of the cartridge. When it does not match, the spool rotating shaft pushed back by the cartridge and when the pushed spool rotating shaft is detected, the spool rotating shaft is rotated, and the spool rotating shaft fits into the shaft hole of the spool of the cartridge. Stop the spool rotation shaft when the spool rotation shaft is not detected due to jamming A spool rotation axis detection sensor to be rotated, a detection body that rotates together with the spool rotation axis, and a spool rotation angle control sensor that detects the detection body and stops the spool rotation axis when the attachment part of the spool is located at the film attachment position. A spool positioning device for film attachment, comprising: