JPH06589B2 - Sheet film feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention takes out rectangular sheet films such as medical X-ray photographs and tomographic photographs one by one from a storage container and supplies them to a photographing device, a developing device and the like. Sheet film feeding device for

(Prior Art) This type of sheet film feeding device is housed in a sealed box and operates in a light-shielded state, so that the film cannot be taken out to the outside even if double feed occurs.

Therefore, this type of sheet film feeding device has a problem that it must be fed one by one.

However, the sheet film is easily charged with static electricity, and preventing double feed has been an extremely difficult problem to solve.

Therefore, in order to solve this problem, the applicant of the present application has already
A sheet film feeding device shown in JP-A-62-51526 has been proposed.

This conventional type has a magazine with an upper opening for accommodating rectangular sheet films in a laminated form, a suction means for suctioning the front upper surface of the film in the magazine, and a swinging mechanism for moving the suction means up and down and back and forth. A feed roller that feeds the front edge of the film sucked and lifted by the suction means and feeds it forward. When the feed roller has two or more films, the feed roller is The film is returned to the original magazine by rotating it in the reverse direction, and the film is again sent to the feed roller by the suction means, and the operation of taking-out and returning is repeated until the double feed is eliminated.

(Problems to be Solved by the Invention) Since the conventional sheet film feeding device repeats the operation of returning the film to the magazine and taking it out again when a double feed occurs, until the double feed is eliminated. There was a problem that it took time.

Further, there is a problem that the film is likely to be scratched when the number of repetitions increases.

Furthermore, the conventional type does not guarantee that the double feed will be eliminated because it simply repeats the ejecting operation.If the static electricity is strong and the contact is strong, repeat the ejecting operation many times. However, there was a problem that double feed could not be resolved.

Therefore, the present invention provides a sheet film feeding device forcibly preventing two sheets from being taken out before being bitten by a feed roller so as to surely prevent double feeding by one taking-out operation. With the goal.

(Means for Solving Problems) The present invention takes the following means in order to solve the problems. That is, a feature of the present invention is that a storage container having an upper opening for storing rectangular sheet films in a stacked form, a suction means for detachably suctioning a front upper surface of the film in the storage container, A sheet film feeding device comprising a swinging means for moving the suction means up and down and back and forth, and a pair of upper and lower feed rollers for feeding the front end edge of the film sucked and lifted by the suction means and sending it forward. A restraint means is provided above the storage container and behind the suction means so that a front end portion of the film is sucked by the suction means and is brought into contact with an upper surface of a midway portion in the front-rear direction of the film to regulate upward movement of the midway portion. The swinging means includes a film that is inclined forwardly between the restraining means and the suction means after the film whose front end is lifted contacts the restraining means. To curved with a center of curvature downwards lies in, wherein the swinging mechanism for moving the suction means temporarily rearward is provided.

(Operation) According to the present invention, the sheet films are stored in the storage container in a laminated form. The suction means descends by the swinging means, and the suction means comes into contact with the front upper surface of the film in the storage container,
Adsorb the film. The swinging means then raise the suction means, which raises the front of the top film. Further, as the suction means rises, the middle part and the rear part of the film also try to rise, but the upper surface of the middle part of the film comes into contact with the restraining means and its upward movement is restricted. After that, the suction means is moved rearward by the swing mechanism. By the rearward movement of the suction means, the film inclined forward and upward between the restraining means and the suction means is forcibly bent so as to have the center of curvature below it.

At this time, since the film between the restraining means and the suction means is forcibly bent by the swinging mechanism, another film is closely attached to the lower surface of the film sucked by the suction means and two or more films are lifted. However, the adhered film tends to separate from the film adsorbed by the adsorbing means by its own restoring force.

Further, in the present invention, in order to bend the film that is inclined forward and upward between the restraining means and the suction means, the self-weight of the lower film that is in close contact acts in a direction inclined with respect to the normal to the film surface, It promotes the occurrence of interlayer displacement between both films.

After that, the swinging means moves the suction means forward, and the front edge of only one sheet film sucked by the suction means is fed into the feed roller. At the same time, the suction of the suction means is released, and the film is fed forward by the feed roller.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In FIG. 1, the sheet film feeding device 1 has a sealed box 2 which completely blocks external light. An opening 3 is provided on the upper surface of the box 2, and the opening 3 is openably and closably closed by a lid 5 connected by a hinge 4. As shown in FIG. 2, a pair of left and right frames 6 are provided inside the box 2, and a storage container is provided between the frames 6.
7 is stored in a downward slope.

The storage container 7 is formed in a rectangular box shape having an upward opening, and the rectangular sheet films 8 are stored in the storage container 7 in a laminated shape. The sheet films 8 to be stored do not have to have the same size, and the size may be various. In this case, the front edge and one side edge of each film 8 are aligned and stored (see FIG. 3). The storage containers 7 are arranged in a downwardly sloping shape for facilitating the front end edges of the films 8 to be aligned at fixed positions.

A pair of right and left swing arms 9 are pivotally supported by a pair of left and right frames 6 (see FIG. 2) via a support shaft 10. The support shaft 10 is attached to the frame 6 so as to be located on the side of the middle portion of the storage container 7 in the front-rear direction.

A connecting rod 12 is attached to the lower part of the swing arm 9 via a pin 11 so as to extend forward, and a front end of the connecting rod 12 is pivotally supported by a crank 14 via a crank pin 13. This crank 14 is a pair of left and right frames
It is attached to a crankshaft 15 inserted through 6, and the crankshaft 15 is rotated in one direction by a drive motor 16. A position detecting protrusion 17 is provided on the crank 14. Two photosensors 18 and 19 for detecting the passage of the protrusion 17 and controlling the drive motor 16 are attached to the frame 6. One photo sensor 18 is a drive motor 16
Is temporarily stopped, and the other photosensor 19 completely stops the drive motor 16. Thus, the protrusion 17 and the temporary stop photo sensor 18 constitute a temporary stop means.

The upper portions of the pair of right and left swing arms 9 are connected by a horizontal rod 20, and the horizontal rod 20 is pivotally supported by the swing arm 9 so as to be rotatable. The frame 6 is provided with an opening 21 through which the horizontal rod 20 can be inserted (see FIG. 2).
The horizontal rod 20 is provided over the range in which it can move as the swing arm 9 swings.

The drive motor 16, the crank 14, the connecting rod 12, the swing arm 9, the horizontal rod 20 and the like constitute the swing means of the present invention.

The horizontal rod 20 is provided with a suction means 22. As shown in FIG. 2, a plurality of the suction means 22 are arranged along the longitudinal direction of the horizontal rod 20 at predetermined intervals, and four suction means 22 are provided in this embodiment. As shown in FIG. 3, the suction means 22 is arranged so as to be biased to one side so as to be within the widthwise range of the smallest film 8 stored in the storage container 7. ing.

FIG. 4 shows the details of the suction means 22. Four suction cup shaft insertion holes 23 are formed in the horizontal rod 20, and a cylindrical suction cup shaft 24 is inserted into each hole 23 so as to be slidable in the axial direction. The upper end of the suction cup shaft 24 projects upward from the insertion hole 23, the shaft mounting plate 25 is inserted through this projection, and the nut 26 is screwed into the suction cup shaft 24.
Prevents 24 falling down. A retaining ring 27 is fixed to the lower portion of the suction cup shaft 24, and a compression coil spring 28 is interposed between the retaining ring 27 and the lower surface of the horizontal rod 20. The suction cup shaft 24 is biased downward by the spring 28. When the suction cup shaft 24 is pushed upward against the spring 28, the spring 28 contracts and the suction cup shaft 24 moves relative to the insertion hole 23.

A suction cup 29 is provided at the lower end of the suction cup shaft 24.
Is fixed. The suction cup 29 has a parabolic recess 30, and a valve chamber 31 is formed between the back surface of the suction cup 29 and the lower end surface of the suction cup shaft 24. A through hole 32 that connects the valve chamber 31 and the recess 30 is provided at the back of the suction cup 29. The suction cup 29 is made of rubber or soft synthetic resin.

An inner hole 33 communicating with the valve chamber 31 is provided at the axial center of the suction cup shaft 24, and a valve shaft 34 is slidably inserted into the inner hole 33. The valve member 35 is fixed to the lower end of the valve shaft 34, and the valve member 35 comes into close contact with the lower end surface of the suction cup shaft 24, thereby closing the communication between the valve chamber 31 and the inner hole 33.

A compression spring 36 is interposed in the inner hole 33 to urge the valve shaft 34 upward so that the valve member 35 and the lower end surface of the suction cup shaft 24 are constantly brought into contact with each other. The suction cup shaft 24
An intake hole 37 communicating with the inner hole 33 is formed on the side surface of the.

The upper end of the valve shaft 34 projects above the upper end surface of the suction cup shaft 24, and the upper end surface of the valve shaft 34 is pushed downward by a valve lever 38.

The valve lever 38 includes a rotation restricting plate 39 fixed to one end of the horizontal rod 20 and a bracket 40 (first part) fixed to the other end of the horizontal rod 20.
(See FIG. 2) It is attached to a shaft 41 that is rotatably provided between them.

The end portion of the valve lever 38 is detachably engaged with a stopper 42 fixed to the frame 6, so that the valve lever 38 is a stopper.
When pushed by 42, the valve lever 38 rotates around the shaft 41 and pushes the valve shaft 34. Due to the pushing of the valve shaft 34, the contact between the valve member 35 and the lower end surface of the suction cup shaft 24 is released, and the valve chamber 31 and the inner hole 33 communicate with each other. An adjusting screw 43 is screwed onto the valve lever 38 so that the four valve shafts 34 come into uniform contact with the valve lever 38.

A tension spring 44 is locked to the upper end of the rotation restricting plate 39 fixed to one end of the horizontal rod 20, and a rear end of the spring 44 is locked to the frame 6. The rotation restricting plate 39
The rear end surface of the upper part of the contacting member abuts on a stopper pin 45 projecting from the swing arm 9, and the rearward rotation by the tension spring 44 is restricted.

A pin 46 is projectingly provided on the lower side surface of the rotation restricting plate 39. The pin 46 swings around the support shaft 10 by the swing of the swing arm 9, and a guide plate 47 is provided on the swing locus of the pin 46. One end of the guide plate 47 is rotatably supported by a support shaft 48 projecting from the frame 6, and is biased upward by a spring or the like, and abuts against a stopper pin 49 provided on the frame 6. In contact therewith, its upward rotation is prevented.

Therefore, when the pin 46 of the rotation restricting plate 39 moves downward from above, the guide plate 47 is pushed by the pin 46 and rotates downward,
Further, when the pin 46 moves downward, the guide plate 47 and the pin 46
When the engagement of 46 is released, the guide plate 47 rotates upward due to the spring force and contacts the stopper pin 49. When the pin 46 moves from the bottom to the top, the pin 46
Contacts the guide plate 47, but at this time, since the guide plate 47 cannot be rotated upward by the stopper pin 49,
The pin 46 moves rearward along the lower surface of the guide plate 47 against the spring 44. By the rearward movement of the pin 46, the swing arm 9 and the horizontal rod 20 relatively rotate, and the suction means 22 moves rearward. When the pin 46 further moves upward, the pin 46 and the guide plate 47
And the rotation restricting plate 39 is a tension spring.
It is pulled by 44 and returns to its original position.

Thus, the swinging restricting plate 39, the pin 46, the guide plate 47, the tension spring 44, etc. constitute the swinging mechanism of the present invention.

A restraint means 50 is provided behind the suction cup 29 and above the storage container 7. The restraint means 50 comprises rollers, and both ends of the restraint means 50 are supported by the frame 6. The restraining means 50 contacts the upper surface of the film 8 which is sucked up by the suction cup 29 and lifted up, and regulates the upward movement of the film 8.

A pair of upper and lower feed rollers 51, 52 are arranged in front of where the suction cup 29 is located when the swing arm 9 is slightly before the top dead center. The feed rollers 51, 52 are located behind a vertical line passing through the front edge of the film 8 in the storage container 7. To be precise, in the state where the front edge of the film 8 is in contact with the feed rollers 51, 52 and the rear portion of the film 8 is in contact with the upper surface of another film in the storage container 7,
The feed rollers 51 and 52 are arranged at positions where the front portion of the film 8 is naturally dropped and the film 8 is correctly dropped to the original position in the storage container 7.

The lower feed roller 52 is fixedly provided to the frame 6, but the upper feed roller 51 is supported by a bracket 54 rotatably supported by the frame 6 via a support shaft 53. There is. The bracket 54 is engaged with a timing detection limit switch 55 and a double feed detection limit switch 56 attached to the frame 6. A pair of left and right brackets 54 are provided, and a pair of left and right limit switches 55 and 56 are also provided.

That is, when the film 8 is inserted between the pair of feed rollers 51 and 52, the bracket 54 rotates about the support shaft 53 by the thickness of the film 8. The timing detection limit switch 55 detects the movement of the bracket 54 and controls the timing of each device. In addition, 2 to the feed rollers 51 and 52
When more than one film 8 is eaten, the double feed detection limit switch 56 is activated.

The lower feed roller 52 is a drive roller, and is linked to a motor 58 via a forward rotation gear 57. This motor
A drive shaft 59 of 58 is rotatably supported by the frame 6, a bracket 60 is rotatably supported by the drive shaft 59, and the forward rotation gear 57 is supported by the bracket 60. Further, a pair of reverse rotation gears 61 and 62 are supported by the bracket 60. By rotating the bracket 60 around the drive shaft 59, either the forward rotation gear 57 or the reverse rotation gear 62 is moved to the lower feed roller 52. Is configured to mesh with.

A heart-shaped groove 63 is formed at the bottom of the bracket 60,
A pin 64 is inserted into this groove 63, and the pin 64 is attached to a rotary arm 66 of a rotary solenoid 65. By swinging the arm 66 of this rotary solenoid 65,
The bracket 60 swings, and the feed roller 52 is switched between forward and reverse rotation.

By forming the groove 63 in a heart shape, the forward rotation position,
It is not necessary to lock the swing of the bracket 60 at any of the reverse rotation positions, and the self-locking effect is exerted.

A guide plate 67 is arranged in front of the feed rollers 51, 52, and a pair of upper and lower feed rollers 68, 68 are arranged in front of the guide plate 67. The delivery roller 68 is linked to the motor 58 via a chain 69. This delivery roller 68
An exit 70 is provided on the wall surface of the box 2 in front of
0 communicates with the developing device or the photographing device 71. This exit 70
A film passage detection sensor 72 is provided in the.

A saw-toothed scraping member 73 is arranged between the front end of the storage container 7 and the feed roller 52, and the scraping member 73 is configured so that the front end edge of the film 8 lifted by the suction means 22 is brought into sliding contact. ing.

A lock device 74 is provided at the rear part of the lid 5 that covers the opening 3 of the box 2. This locking device 74 has a lid
5, the locking tongue 75 provided inside the rear part of the
A locking portion 76 provided on the side of the box 2 so as to engage with and disengage from the box, an engagement release piece 77 provided on the side of the box 2 for pushing the locking tongue 75, Box 77
2, a push button 78 that is pushed from the outside, a lock piece 79 that restrains the movement of the push button 78, and a rotary solenoid 80 that rotates the lock piece 79.

By rotating the lock piece 79 with the rotary solenoid 80 and engaging the lock piece 79 and the push button 78, the push button 78 cannot be operated and the lid 5 cannot be opened from the outside.

When the rotary solenoid 80 is rotated to release the engagement between the lock piece 79 and the push button 78, and the push button 78 is pushed in, the engagement release piece 77 is pushed and the engaging tongue piece 75 is pushed and locked. The engagement between the tongue piece 75 and the locking portion 76 is released, and the lid 5 can be opened.

Incidentally, the reference numeral 81 in FIG. 1 is a film size detecting device, which operates in the case of a small film. That is, when the film 8 is picked up by the suction means 22,
It operates when processing a small film that does not come into contact with the restraint means 50. When a double feed is detected while the detection device 81 is operating, a buzzer is used to give an alarm.

Further, reference numeral 82 in the figure indicates a control device.

Further, reference numeral 83 in the figure is a roll film processing device for feeding a film wound in a roll shape, 84 is a micro switch for roll film detection, 85
Is a roll film guide plate, and the roll film is sent out to the developing machine 71 etc. by the sending out roller 68.

In FIG. 2, reference numeral 86 is an empty switch, which is composed of an infrared sensor and is fixed to the horizontal rod 20. This empty switch 86
Is for detecting whether the film 8 is stored in the magazine 7 or is empty in the magazine 7 by approaching the magazine 7 by the swing of the swing arm 9. By providing the empty switch 86 on the horizontal rod 20 in this manner, the approach time between the switch 86 and the film 8 is shortened, and the film 8 is prevented from being exposed to infrared rays.

Next, the operation of the embodiment of the present invention will be described.

First, the lid 5 is opened, and the sheet film 8 is stored in the storage container 7 through the opening 3. The sizes of the films 8 do not have to be uniform, and films 8 of various sizes can be stored at the same time. In this case, as shown in FIG. 3, the front end edge and the one side edge of each film 8 are aligned and stored.

Next, the lid 5 is closed. Lock device when lid 5 is closed
The rotary solenoid 80 of 74 operates, the lock piece 79 and the push button 78 are engaged, the push button 78 cannot be operated from the outside, and the lid 5 is prevented from being opened accidentally.

Next, by pressing a start button (not shown), the crank drive motor 16 and the feed roll drive motor 58 start rotating in the arrow direction shown in FIG. At this time, the feed roller 52 meshes with the forward rotation gear 57 and makes forward rotation, and the swing arm 9 is at the highest position.

By the rotation of the crank drive motor 16, the crank 14,
The swing arm 9 starts rotating downward around the support shaft 10 via the connecting rod 12. By the downward rotation of the swing arm 9, the suction means 22 and the rotation regulating plate 39 attached to the swing arm 9 also move downward. At this time, since the rotation restricting plate 39 is pulled rearward by the spring 44 and the rotation restricting plate 39 and the stopper pin 45 are in contact with each other, the angle formed by the rotation restricting plate 39 and the swing arm 9 changes. It keeps a certain angle without doing. Therefore, the pin 46 provided on the rotation restricting plate 39 draws an arc locus around the support shaft 10 of the swing arm 9 and moves downward.

As shown in FIG. 5, when the pin 46 moves downward, it abuts on the guide plate 47. Since the guide plate 47 is free to rotate downward, the guide plate 47 also rotates downward as the pin 46 descends, and then the pin 46 and the guide plate 47 are engaged with each other as shown in FIG. When released, the guide plate 47 returns to its original position and contacts the stopper pin 49.

Still further, the swing arm 9 is rotated downward, so that the seventh
As shown in the figure, the suction cup 29 of the suction means 22 comes into contact with the front upper surface of the film 8 in the magazine 7. At this time,
As shown in FIG. 4, the spring of the suction cup shaft 24
28 is compressed to soften the collision between the suction cup 29 and the film 8, and the air in the concave portion 30 of the suction cup 29 is removed to generate a negative pressure, and the film 8 is adsorbed to the suction cup 29. The suction cup shaft 24 and the valve shaft 34 move upward with respect to the horizontal rod 20 due to the compression of the spring 28, but the top of the valve shaft 34 and the adjusting screw 43 do not come into contact with each other in this movement. Therefore, the valve member 35 and the lower end surface of the suction cup shaft 24 are in close contact with each other, and the valve chamber 31 does not communicate with the outside, so that the negative pressure in the recess 30 of the suction cup 29 is maintained.

At this time, since the four suction cups 29 are provided so as to be offset to one side as shown in FIG. 3, even in the case of the small film 8, only the film 8 is adsorbed and the large film below is absorbed. 8 will not be adsorbed at the same time. Therefore, table feed is prevented.

Then, the swing arm 9 passes through the immortal point, the swing arm 9 starts to rotate upward as shown in FIG. 8, and the front portion of the film 8 attracted to the suction cup 29 is lifted. The front edge of the film 8 moves upward while slidingly contacting the scraping member 73, and if two or more films 8 are lifted at the same time, the scraping member 73 causes the lower film 8 to drop.

By further rotating the swing arm 9 upward, the film 8
The upper surface of the middle portion contacts the restraint means 50.

Further, the pin 46 of the rotation restricting plate 39 contacts the lower surface of the guide plate 47. Since the guide plate 47 is prevented from rotating upward by the stopper pin 45, the pin 46 cannot move upward in a circular arc locus around the support shaft 10. Then, the pin 46 moves along the lower surface of the guide plate 47 as shown in FIG. The movement of the pin 46 causes the rotation restricting plate 39 to move to the horizontal rod 20.
Rotate around the central axis of. At this time, the spring 44 is stretched.

Then, by the rearward rotation of the rotation restricting plate 39, the rotation restricting plate
The horizontal rod 20 fixed to 39 rotates, and the suction means 22 moves rearward. By this rearward movement of the suction means 22, the restraint means 50
The film 8 between the suction cup 29 and the suction cup 29 is forcibly curved so as to have a center of curvature therebelow.

By forcibly bending the film 8 in this way,
When another film 8 is closely adhered to the lower surface of the film 8 adsorbed to the suction cup 29, the film 8 on the lower surface is repelled by forced bending and dropped downward to be stored in the storage container 7, Double feed is prevented.

That is, since the film 6 between the restraint means 50 and the suction means 22 is forcibly bent by the backward movement of the suction means 22, another film 8 is attached to the lower surface of the film 8 sucked by the suction means 22.
Even if two or more films 8 are in close contact with each other and are lifted, the intimate contact of the films 8 tends to separate from the films 8 adsorbed by the adsorbing means 22 due to their own restoring force.

Further, at this time, since the film 8 is inclined forward and upward between the restraining means 50 and the suction means 22, the self-weight of the lower film 8 in close contact with the film 8 is inclined with respect to the normal to the surface of the film 8. It acts to cause a layer shift between both films 8 and ensures the separation of the lower film 8.

By the above action, the film 8 adhered on the lower side is sucked by the suction means 22.
It will be reliably ejected from the film 8 adsorbed on.

In the state of FIG. 9, the position detecting projection 17 of the crank 14 passes through the temporary stop detecting photo sensor 18, and the operation of the photo sensor 18 causes the drive motor 16 to temporarily stop, so that the state of FIG. It is maintained for a predetermined time. In this way, the swing of the swing arm 9 is temporarily stopped, and the movement of the suction means 22 is stopped to temporarily maintain the forced bending state (at the time of maximum bending) of the film 8 so that the film 8 is brought into close contact with the lower surface. The film 8 can be reliably dropped.

When a predetermined time has elapsed by the timer, the drive motor 16 starts to restart, the swing arm 9 starts to rotate upward, and the pin 46 also moves upward accordingly, and finally the contact with the guide plate 47 is released. . As a result, the rotation restricting plate 39 is pulled by the spring 44 to rotate, and the suction means 22 moves forward as shown in FIG. The forward movement of the suction means 22 causes the front edge of the film 8 to be a pair of upper and lower feed rollers 51, 52.
Be eaten by.

When the swing arm 9 further rotates upward, the valve lever 3
8 contacts the stopper 42, the valve lever 38 rotates around the shaft 41, the adjusting screw 43 pushes the valve shaft 34, and the contact between the valve member 35 and the lower end surface of the suction cup shaft 24 is released. Since the valve chamber 31 and the inner hole 33 communicate with each other, and the inner hole 33 communicates with the outside through the intake hole 37, the inside of the recess 30 of the suction cup 29 is at atmospheric pressure, and the suction force of the suction cup 29 is Then, the film 8 is released from the suction cup 29. By the film 8 biting of the feed rollers 51, 52, the upper feed roller 51 moves upward by the thickness of the film 8,
Bracket 54 turns to limit switch for timing
55 is activated and each device is timed.

Then, the film 8 is sent forward by the feed rollers 51 and 52, and is further sent to the developing machine or the photographing device 71 through the sending rollers 68 and 68 in front of the film.

When the swing arm 9 reaches the top dead center, the crank 14
The position detection protrusion 17 passes through the stop photo sensor 19, and the drive motor 16 is stopped by the operation of the photo sensor 19. This completes the operation of taking out one film.

If the feed rollers 51, 52 have two or more films 8
When the bite is caught, the upper feed roller 51 moves upward by more than the specified dimension, and the bracket 54 is largely rotated. This rotation is detected by the double feed detection limit switch 56. By the operation of the limit switch 56, as shown in FIG. 11, the rotary solenoid 65 operates and the rotating arm 66 rotates, and the pin 64 attached to the rotating arm 66 moves in the heart-shaped groove 63. While rotating, the bracket 60 is rotated.
By rotating the bracket 60, the lower feed roller 52
The forward rotation gear 57 that was meshing with the
Meshes with the lower feed roller 52, and the pair of upper and lower feed rollers 51, 52 starts reverse rotation. This feed roller 51,
By the reverse rotation of 52, the film 8 which has been slightly fed is fed backward, and finally the front edge of the film 8 is fed by the feed roller 51,
52 away.

Then, the film 8 naturally falls downward. At this time, the feed rollers 51, 52 move the film 8 in the storage container 7
Since it is placed behind the vertical line that passes through the front end of
The film 8 that falls naturally falls completely to its original position.

When the film 8 falls into the storage container 7, the feed roller
51 and 52 are switched to normal rotation, and crank drive motor 1
6 starts and repeats the film take-out operation. This operation is continued until one film 8 is surely eaten by the feed rollers 51, 52.

Incidentally, as shown in FIG. 12, when the large film 8 is lifted, the suction cup 29 is arranged to be biased to one side, so that the film 8 on the side where the suction cup 29 is not located is indicated by a phantom line in FIG. Although it hangs down as shown, in the present invention, the upper surface of the film 8 is the restraint means 5
Since the film 8 is pressed at 0 and the film 8 is forcibly bent, the film 8 can be lifted while maintaining a horizontal state without hanging down on one side.

Further, even when processing large and small films 8, since the storage container 7 is arranged in a front-down manner, the front edge of the film 8 is easily aligned. Furthermore, since the rear portion of the film 8 which is bitten by the feed rollers 51 and 52 and moves forward, the rear portion of the film 8 is pressed by the restraining means 50, and thus moves past the upper surface of the film 8 in the storage container 7. Therefore, since the film 8 below the film 8 is urged forward by the film 8 being taken out, the front end of each film 8 is always aligned at a predetermined position.

FIG. 13 shows another embodiment of the present invention, which is configured to store the storage container 7 horizontally. In this case, the sizes of the films 8 stored in the storage container 7 are uniform. The other structure is substantially the same as that of the above embodiment.

The present invention is not limited to the above embodiment.

(Effect of the invention) According to the present invention, since the film that is inclined forward and upward between the restraining means and the suction means is curved, the restoring force of the film adhered to the lower surface of the film sucked by the suction means and its Due to the gap between the two films due to the weight of the adhered film tilting from the normal to the film surface,
It is possible to reliably separate the film on the lower surface side that is in close contact with the film adsorbed by the adsorbing means, and to effectively prevent the occurrence of double feed.

[Brief description of drawings]

FIG. 1 is a sectional side view showing an embodiment of the present invention, FIG. 2 is a partial front view of a swinging means and a suction means, and FIG. 3 shows a positional relationship between a film stored in a magazine and the suction means. FIG. 4 is a plan view, FIG. 4 is a cross-sectional view of the suction means, FIGS. 5 to 10 are explanatory views of the film take-out operation, FIG. 11 is an explanatory view showing the processing in the case of double feed, and FIG. FIG. 13 is a side view showing another embodiment of the present invention when adsorbing. 1 ... Sheet film feeding device, 7 ... Storage container, 8 ...
Sheet film, 9 ... Swing arm, 12 ... Connecting rod, 14 ... Crank, 16 ... Drive motor, 17 ... Protrusion, 18 ...
Sensor, 20 ... Horizontal rod, 22 ... Adsorption means, 39 ... Rotation restriction plate, 44
... tension spring, 46 ... pin, 47 ... guide plate, 50 ... restraint means.

Claims (1)

[Claims] 1. A storage container (7) having an upper opening for storing rectangular sheet films (8) in a laminated form, and a front upper surface of the film (8) of the storage container (7) is removably adsorbed. Adsorption means (22)
And a swinging means for moving the suction means (22) up and down and back and forth, and a pair of upper and lower sides that feed the front end edge of the film (8) sucked and lifted by the suction means (22) and send it forward. In a sheet film feeding device provided with feed rollers (51) and (52), above the storage container (7) and behind the suction means (22),
A restraining means (50) is provided, the front end of which abuts against the upper surface of the midway portion of the front and rear direction of the film (8) which is sucked up by the suction means (22) and is restrained from moving upward in the midway portion. The front end of the film is lifted
After the (8) contacts the restraining means (50), the restraining means (50)
Between the suction means and the suction means (22)
A sheet film feeding device, characterized in that a swinging mechanism for temporarily moving the suction means (22) rearward is provided so that (8) has a curvature center below it and bends.