JPS6114507B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holder for inspecting film cartridges used for 35 mm roll films and the like.

As is well known, 35mm roll film is normally sold on a spool and sealed in a cartridge, but in order to maintain the reliability of the finished product, various inspection processes are carried out. is necessary.
In other words, in these inspection processes, we check whether there are any external scratches on the cartridge, whether there is any deformation on the cartridge, whether the length of the film leader section pulled out from the cartridge is appropriate, and whether there are any tolerances between the spool and the cartridge. It is checked whether the dimensions are appropriate and whether the spool can be rotated with appropriate rotational torque.

By the way, in the conventional 35 mm roll film manufacturing process, sample products are taken out of the completed film and inspected by visual inspection or tactile sensation. However, such manual sampling inspection is not only inefficient, but also difficult to conduct such inspection on all inexpensive products, so the reliability of individual products is always affected. Questions remain. In particular, due to the recent rise in labor costs, securing this type of inspection personnel increases the cost of the product, so automation of the inspection process has been strongly desired in recent years.

In view of the above-mentioned problems in the roll film inspection process, the present invention proposes a film cartridge holder that can be used in various automated inspection processes.

Hereinafter, details of the cage of the present invention will be explained with reference to embodiments shown in the drawings.

The illustrated embodiment is an example in which the present invention is applied to a turntable type inspection device, in which a cartridge X containing a film is placed on a turntable 1 which is rotated intermittently
It is supported by a retainer 2 according to the present invention provided at the outer peripheral end of the retainer 2 . The cage 2 has a pair of chucks 3 and 4 that can hold the end plates x ₁ and x ₂ of the cartridge X, and has a base 7 that supports a pair of vertically opposed bearings 5 and 6. The upper chuck 3 and the lower chuck 4, which can contact the end plates x ₁ and x ₂ of the cartridge X, are rotatably supported on each of the bearings 5 and 6, respectively. The retainer 2 has a vertically slidable actuating rod 8, and an actuating ring 10 is attached to the upper part of the actuating rod 8, which is biased upwardly by a biasing spring 9. This actuation ring 10
is engaged with one end 12a of a shifter 12 whose intermediate portion is supported on the upper part of the base by a fulcrum shaft 11, and the other end 12b of this shifter 12 is connected to the upper chuck supported on the bearing 5 so as to be movable up and down. 3 is engaged with a driven ring 13 fixed to the upper part of 3. Further, a cam member 15 is fixed to the lower end of the actuating rod 8, which is selectively locked by a lock claw 14 at the bottom of the base 7. Therefore, when the lock claw 14 is disengaged from the cam member 15, the operating rod 8 is lowered than in the illustrated state and the upper chuck 3 is raised, so that the cartridge X is placed between the lower chuck 4 and the upper chuck 3. can be accepted. Further, in a loading station other than that shown in the drawings, when the cartridge X is positioned on the lower chuck 4, the actuating rod 8 is raised and the upper chuck 3 is lowered by the shifter 12, so that the cartridge is placed between the chucks 3 and 4. X is bitten and the lock pawl 14 is attached to the cam member 15.
are engaged and the biting state is maintained.

Further, a rotating arm 17 having a driven roller 16 is fixed to the lower end of the lower chuck 4, and by rotating this rotating arm 17, the cartridge X can be rotated together with the spool Y. However, in the illustrated spool play detection station, the rotary arm 17 is locked at the illustrated position, so that the cartridge X is fixedly held in the holder 2.

A core rod 18 is positioned inside the lower chuck 4, and a pusher 20 pushed upward by a spool biasing spring 19 is slidably fitted onto the core rod 18. Therefore, as shown in FIG. 2, the spool Y is constantly pressed upward by the pusher 20 that is in contact with the lower end surface. Further, a push rod 21 that is slidable in the vertical direction is located inside the upper chuck 3, and this push rod 21 is attached to the upper chuck 3.
It is constantly pressed upward by a weak recovery spring 22 interposed between the upper end surface of the holder and the upper end surface of the holder. Therefore, by applying a strong external force downward to the head 21a of the push rod 21, the pusher 2 at the lower end of the push rod 21 is
1b contacts the upper end surface of the spool Y, the spool Y resists the force of the spool biasing spring 19 and moves to the second position.
It is pushed down slightly to the position shown by the phantom line in the figure.

A post 24 is erected on the fixed table 23 facing the turntable 1, and the middle part of a lever bar 26 is rotatably supported on a fulcrum shaft 25 at the top of the post 24. . This lever 2
One end 26a of the lever 26 faces directly above the head 21a of the push rod 21, and the end 26a of the lever 26 is pushed by the force of the contact spring 27A stretched between the lever 26 and the fixed table 23. Head 21a of push rod 21
is in constant contact with.

Further, a differential transformer 28 for detecting displacement of the lever bar 26 is provided at the other end 26b of the lever bar 26, which is forcibly rotated by a pneumatic cylinder 27 provided between the fixed table 23. . This differential transformer 28 has a core 28 suspended from a lever bar 26.
a and a solenoid 28b installed on the fixed table 23, and outputs the displacement of the core 28a as an amplified output voltage.

Since the embodiment has the above configuration,
Patrone Spool Y for
The amount of play can be measured.

That is, as mentioned above, before compressed air is supplied, the spool Y is biased to the upper limit by the spool biasing spring 19 as shown by the solid line in FIG. When the force is applied, the push rod 21 is forcibly lowered and the spool Y is moved to the lower limit. Therefore, as shown in the time sequence of FIG. 3, the supply of compressed air P to the pneumatic cylinder 27 causes the lever rod 26 to rotate by an angle α, so that the differential transformer during the supply of compressed air The amount of play in the spool can be measured by simply finding the difference between the output voltage V ₁ of No. 28 and the output voltage V ₂ before and after this.

In the above embodiments, the case of inspecting the amount of play in the spool was illustrated, but since the cartridge can be fixed or rotated by locking or externally rotating the rotary arm, the holder according to the present invention can also be used for other inspection processes. It is clear that

As is clear from the above explanation, simply by attaching the film cartridge to the holder according to the present invention, various inspections can be performed automatically. Product reliability can be improved through comprehensive product inspection.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a spool play amount detection device to which the present invention is applied, FIG. 2 is an enlarged cross-sectional view of the main part of the detection device, and FIG. 3 is an inspection sequence. X...Patrone, Y...Spool, 2...Cage, 3, 4...Chuck, 5, 6...Bearing, 1
7... Rotating arm, 20... Push metal, 21... Push bar.

Claims (1)

[Claims] 1. A film cartridge having a built-in spool, a pair of chucks capable of gripping an end plate of the cartridge from the axial direction of the cartridge and supporting the cartridge rotatably about the shaft; It includes a pusher for pushing the spool in the axial direction, and a push rod for external operation that is built into the other side of the chuck and forcibly pushes the spool in the axial direction against the force of the pusher as necessary. Film cartridge holder.