JPH0966499A - Film punching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching device capable of punching an end of a film into a predetermined shape while simultaneously punching an engaging hole used for connecting a leader or connecting a winding core of a film cartridge. SOLUTION: An anvil 5 is mounted onto a base 1 and provided on one side with a film inserting groove 11. The anvil 5 is provided on the other side with a clip 14 for nipping the tip of the film movable relative to the anvil 5. A punching blade 38 and punching pin 39 to punch a wind starting end of the film into a predetermined shape are mounted to the lower surface of a cutter holder 28 vertically moved relative to the anvil 5 by the swing of a lever 32. The wind starting end of the film sent from the film inserting groove 11 onto the anvil 5 is inserted and nipped between a pair of nipping pieces 15, 16. The blade holder 28 is lowered by the depression of the lever 32 to punch the tip of the film into the predetermined shape with the punching blade 38 while an engaging hole is punched by the punching pin 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film punching device for punching the leading end of a film into a desired shape.

[0002]

2. Description of the Related Art Generally, when developing a film by an automatic film developing apparatus, the leading end of the film is connected to a flexible leader and the film is transferred to the film developing section by the leader of the leader. I am trying to let you.

For connecting the leader and the film, a method of applying a splice tape across both members is known, but the reliability of the connection is poor, and the splice tape is expensive and can be reused. It is financially problematic because it cannot.

[0004] In order to solve such a problem, the present applicant has already proposed a connecting method in which a protruding piece is provided at the rear end of the reader in the transport direction and the front end of the film is disengaged from the protruding piece. doing.

In this case, as shown in FIG. 8 (II), it is necessary to provide an engaging hole a at the leading end of the film F with which the projecting piece can be engaged. When the engaging hole a is one, Since the leader and the film F may be relatively inclined, the engagement hole a
It is necessary to make a plurality of holes and to pierce them accurately according to the position of the protrusion provided on the reader.

Further, when printing a photograph, the film is taken up by a spool 51 incorporated in a film cartridge 50 shown in FIG. 9, and when the image density of the film is detected by a scanner unit or when a color image of the film is detected. When a photographic light-sensitive material is printed, a film F is pulled out from the film cartridge 50, and after each process, the film F is rewound into the film cartridge 50.

[0007] In the adoption of the above-described printing process,
In order to wind and rewind the film, it is necessary to accurately form a plurality of engaging holes a at the winding start end of the film that can engage with the plurality of protrusions 52 provided on the spool 51. In order to facilitate the insertion of the film F into the film cartridge 50, it is necessary to form a tapered tongue portion b at the tip of the film F.

When the film F is pulled out from the film cartridge 50 in the developing or printing process of the film, if the film F is pulled out while being in contact with the inner surface of the film cartridge 50, the film F may be damaged. .

In order to solve such a problem and to facilitate the drawing of the film, Japanese Patent Application Laid-Open No. 2-27253 has been proposed.
In the film cassette described in Japanese Patent No. 9, a pair of flanges are provided on a spool provided in the cassette shell, and an annular lip provided on the outer periphery of the flanges suppresses the expansion of the diameter of the film roll wound on the spool. However, the film is prevented from coming into contact with the inner surface of the cassette shell.

Further, a notch 64 shown in FIG. 10 is formed on one side of the winding end portion of the film roll, and a tip portion 65 is provided on the front side thereof, and the notch 64 is engaged with an annular lip to make the tip portion. Is released from the outer peripheral surface of the film roll, and when the spool rotates in the film unwinding direction, the film peeling guide provided on the inner surface of the cassette shell guides the chip portion to the film passage to facilitate the withdrawal of the film. I am trying.

When the developed film is wound up using the film cassette (film cartridge) as described above, if the developed film is damaged and the notch is torn, the notch is formed. Since the annular lip cannot be engaged, the film wound on the spool cannot be easily pulled out and the notch must be recreated.

Even if the winding start end of the film is damaged, it is necessary to remake the engaging hole a and the tongue portion b at the film winding start end.

[0013]

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost film punching device capable of easily punching the winding start end and winding end end of a film into a predetermined shape.

[0014]

In order to solve the above-mentioned problems, in the present invention, a flat plate-shaped anvil is attached to the upper surface of a base, and the movement of both side edges of the film is guided to one side of the anvil. A film insertion groove for guiding the film is provided on the anvil, a dust drop hole is formed on the other side of the anvil, and a swingable lever is provided on the platform and the lever is swung to the anvil. A blade holder that moves up and down is provided, and a punching blade that punches the leading end of the film into a predetermined shape by abutting against the anvil is attached to the lower surface of the blade holder.

Here, the punching blade may punch the winding start end of the film in the width direction to form a tapered tongue portion, or alternatively, the winding end end of the film in the width direction. At the same time as punching, a notch may be formed on the side edge of the winding end portion.

Further, the blade holder is provided with a punching blade for punching the winding start end of the film in the width direction to form a tapered tongue portion, and a punching pin for forming an engaging hole at the winding start end of the film. A pin hole into which the punching pin is inserted may be formed in the attachment and the anvil so that the engaging hole can be formed simultaneously with the formation of the tongue portion.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the base 1 has a waste space 2 that opens at the lower surface, and the waste space 2 is closed by a bottom lid 3 that is detachably attached to the lower surface of the base 1. ing.

A recess 4 is provided on the upper surface of the base 1, and the upper surface of the flat plate-shaped anvil 5 fitted in the recess 4 is held at the same level as the upper surface of the base 1.

A holder guide frame 6 mounted on the upper surface of the base 1.
As shown in FIG. 5, a pair of side plates 8 are provided on both sides of the top plate 7, and mounting plates 9 are formed from the lower end of each side plate 8 toward the outside. It is attached to the base 1 via the above.

As shown in FIGS. 1 and 2, the holder guide frame 6 covers the anvil 5. The holder guide frame 6 is provided with a guide plate 10 on one side of the anvil 5,
The lower surface of the guide plate 10 is provided with a film insertion groove 11 for guiding the movement of both side edges of the film F and guiding the film F onto the anvil 5.

A fitting groove 12 is provided on the other side of the anvil 5 on the upper surface of the base 1, and a dust drop hole 13 is formed on the bottom surface of the fitting groove 12.

The fitting groove 12 is provided with a clip 14 for holding the leading end of the film F. The clip 14 is composed of a pair of sandwiching pieces 15 and 16 which are vertically overlapped with each other, and the lower sandwiching plate 16 is prevented from coming out upward by a holding plate 44 screwed onto the base 1. Also, the lower clamping piece 1
The tip of 6 is a forked portion 16a, and the forked portion 16a faces both sides of a scraping claw 17 provided at the peripheral edge of the scrap dropping hole 13.

The rear end portion of the upper holding piece 15 is made thick, and the thick portion is joined to the rear end portion of the lower holding piece 16 by tightening a screw and is provided at the lower end portion of the lower holding piece 15. The protrusion 18 is in elastic contact with the protrusion 19 provided at the tip of the lower holding piece 16. Here, the protrusion 18 is provided at a position facing the forked portion 16a.

Guide pins 20 are provided on both sides of the lower surface of the lower sandwiching piece 16, and each guide pin 20 is inserted into a guide hole 21 formed in the base 1. The guide hole 21 is a long hole extending toward the anvil 5, and the clip 1 is provided in a range where the guide pins 20 abut on both ends of the guide hole 21.
4 is movable, and the clip 14 is deflected toward the anvil 5 by the spring 22 connected to each guide pin 20.

A positioning plate 23 is superposed on the upper surface of the upper holding piece 15 of the clip 14. Positioning plate 2
3 has a bent piece 24 at its tip, and the bent piece 24 is formed from an opening 25 formed in the upper holding piece 15 to a pair of holding pieces 15,
The front end of the film F, which faces the space 16 and is inserted between the pair of holding pieces 15 and 16, is positioned.

The positioning plate 23 is provided with a long hole 26, and the positioning plate 23 is fixed by tightening a fixing screw 27 screwed into the upper holding piece 15 from the long hole 26.

Here, the long hole 26 becomes longer toward the anvil 5, and therefore, by loosening the fixing screw 27,
The position of the positioning plate 23 can be adjusted with respect to the anvil 5.

A blade holder 28 is provided inside the holder guide frame 6. The blade holder 28 is slidably supported along a plurality of guide pins 29 protruding from the upper surface of the anvil 5, and can move up and down with respect to the anvil 5.

The blade holder 28 has a connecting pin 30 projecting laterally from both side surfaces, and both ends of the connecting pin 30 are inserted into a vertically elongated hole 31 formed in the side plate 8 of the holder guide frame 6 and the lever is provided. Sideways holes 3 formed in side plates 33 of 32
It is inserted in 4 and is retained.

Here, the lever 32 is swingably supported by support pieces 35 provided on both sides of the upper surface of the base 1 via a shaft 36, and the spring 3 supported by the shaft 36.
7 deflects the lever 32 upward.

Therefore, by swinging the lever 32, the blade holder 28 moves up and down.

As shown in FIG. 3, a punching blade 38, a plurality of first punching pins 39, and a second punching pin 40 between the first punching pins 39 are attached to the lower surface of the blade holder 28. .

The punching blade 38 is composed of a strip-shaped blade plate, and the punching blade 38 punches the film F in the width direction by abutting or biting the cutting edge with respect to the upper surface of the anvil 5, and at the winding start end of the film F, as shown in FIG. A tapered tongue portion b as shown in II) is formed.

The first punching pin 39 and the second punching pin 40 are inserted into the pin holes 41, 42 formed in the anvil 5 when the blade holder 28 descends. Pin holes 41, 42
The opening edge of is a cutting blade, and the engaging hole a shown in FIG. 8 (II) is punched at the leading end of the film F by the intrusion of the punching pins 39, 40 into the pin holes 41, 42.

Now, when the winding start end portion of the film F shown in FIG. 8 (I) is inserted into the film insertion groove 11 of FIG. 1, both sides of the film F are guided by the film insertion groove 11 and the film F is placed on the anvil 5. Be induced. When the film F is further inserted, the winding start end portion of the film F is inserted between the pair of holding pieces 15 and 16 of the clip 14, and the positioning plate 23 is inserted.
The tip is positioned by the contact with the bent piece 24 of.

After positioning the leading edge of the film F, the lever 3
When 2 is pushed down, the blade holder 28 descends, and the first punching pin 39 and the second punching pin 40 enter the pin holes 41, 42 as shown in FIG.
As shown in FIG. 8 (II), a circular engaging hole a is punched at the winding start end of the film F, and an oval engaging hole c is formed by the second punching pin 40. After punching the engaging holes a and c, the tip of the punching blade 38 contacts the anvil 5, and the punching blade 38 punches the winding start end of the film F in the width direction as shown in FIG. 8 (II). The tapered tongue portion b is formed by being pulled out.

Punching scraps are generated by the punching as described above, and the punching scraps A at the leading end of the film shown in FIG. So clip 1
When 4 is moved in a direction away from the anvil 5, the punching waste A comes into contact with the scraping claw 17, and the relative movement of the punching waste A and the clip 14 in the stopped state causes the punching scrap A to move as shown in FIG. The sandwiching of the punching waste A is released, and the punching waste A falls from the waste dropping hole 13 into the waste storage space 2.

On the other hand, the punching dust formed by punching the first punching pin 39 and the second punching pin 40 passes through the pin holes 41, 42 and the discharging hole 43 communicating with the pin holes 41, 42 to collect the dust. It falls into the space 2.

In the punching device shown in the embodiment, in addition to the case where the tongue portion b and the engaging hole a are newly formed in the film F, the tip of the film F in which the tongue portion b and the engaging hole a are formed is damaged. It may be used when the bellows portion b and the engagement hole a are recreated after being received unusable.

In punching the film F, the position of the leading end of the film F can be adjusted by adjusting the position of the positioning plate 23, so that the punching dimension from the leading end of the film F can be set arbitrarily.

FIG. 7 shows another example of the blade holder 28.
A punching blade 50 made of a strip-shaped blade plate is attached to the lower surface of the blade holder 28. The punching blade 50 is a film F
Has a first cutting blade 51 for punching out the winding start end of the film F in an oblique direction, and a V-shaped second cutting blade 52 for punching out a notch 64 at the side edge of the winding end end of the film F.

The blade holder 28 is provided on the anvil 5 shown in FIG. 1, the winding end end of the film F is positioned on the anvil 5, and then the lever 32 is pushed down to lower the blade holder 28. The film F shown in 10 can be formed.

[0044]

Since the present invention is constructed as described above,
The following effects are obtained.

After inserting the end portion of the film into the film insertion groove, positioning the end portion of the film on the anvil, and pushing down the lever to lower the blade holder, the tip portion of the film is predetermined. It can be punched into the shape of.

When the upper blade is attached to the blade holder, the lower blade is attached to the base, and the upper blade and the lower blade punch out the leading edge of the film into a predetermined shape, mounting of the both blades is highly accurate. Although mounting is required, in the case of the present invention, since the leading edge of the film is cut in the width direction by the contact of the punching blade with the anvil, precision is not required for mounting the punching blade, and assembly is easy. Therefore, the cost can be reduced.

By providing the blade holder with the punching blade and the punching pin, it is possible to form the engaging hole at the same time as punching the end portion of the film.

A clip for holding the leading end of the film is movably provided on the base plate with respect to the anvil, and a scraping claw is provided at the peripheral edge of the scrap drop hole, so that punching scraps at the end of the film are scraped. It can be reliably discharged into the drop hole.

By providing the positioning plate so that the position of the positioning plate can be adjusted with respect to the anvil, the punching dimension from the leading end of the film can be arbitrarily adjusted.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an exploded perspective view of the above.

FIG. 6 is a sectional view showing an operating state of the above.

FIG. 7 (I) is a plan view showing another example of the blade holder,
(II) is a perspective view

FIG. 8 (I) is a plan view showing a winding start end portion of the film,
(II) is a plan view showing the film after punching

FIG. 9 is a partially cutaway perspective view showing a film cartridge.

FIG. 10 is a plan view showing the winding end portion of the film.

[Explanation of symbols]

 1 Platform 5 Anvil 11 Film insertion groove 13 Scrap drop hole 14 Clips 15 and 16 Clamping piece 17 Scrap drop claw 23 Positioning plate 24 Bending piece 28 Blade holder 32 Lever 38 Punching blade 39 First punching pin 41 Pin hole

Claims (4)

[Claims] 1. A flat plate-shaped anvil is attached to the upper surface of a base, and a film insertion groove for guiding the movement of both side edges of the film to guide the film on the anvil is provided on one side of the anvil. A scrap drop hole is formed on the side, a swingable lever and a blade holder that moves up and down with respect to the anvil by the swing of the lever are provided on the base, and the anvil is formed on the lower surface of the blade holder. A film punching device equipped with a punching blade that punches the leading end of the film into a predetermined shape by abutting against the film. 2. The film punching apparatus according to claim 1, wherein a punching pin is attached to the leading end of the film so that the lower portion of the holder penetrates into the pin hole formed in the anvil when the holder descends. 3. A clip, which elastically clamps the leading end of the film fed from the film insertion groove toward the waste drop hole from above and below by a pair of clamping pieces, is movable with respect to the anvil on the base. The punching scraps clamped by the clip are stopped on the peripheral portion of the scrap dropping hole by the backward movement of the clip, and the punching scraps are moved from the clip by the relative movement of the punching scrap and the clip. The film punching device according to claim 1 or 2, further comprising a scraper for removing the scraps. 4. A bent piece at the front end of a positioning plate for positioning the front end of the film is arranged between the upper and lower clamp pieces of the clip, and the positioning plate is provided so as to be positionally adjustable in the moving direction of the clip. The film punching device according to.