JP2002154092A - Punching method and punching machine for strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve positioning accuracy in the width direction of a punching position to reduce displacement of formed holes. SOLUTION: A punching apparatus 11 comprises a punch block 16, a die block 32, and an vertically driving mechanism 33. A punch body 34 is attached to the punch block 16 to punch a film 15. On an upper portion of the die block 32, an air stripper plate 51 provided with small jet orifices 50 jetting air current to the film 15 is attached to be integral with the die block 32. When forming holes on the film 15, the punch block 16 is fell down to punch the film 15 by the bunch body 34, while the air current jets from the small jet orifices 50 on the film 15 to prevent the curve of the film 15 and the film is positioned by regulating the position in the width direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching method and a punching machine used for manufacturing a photographic film strip or the like.

[0002]

2. Description of the Related Art For forming holes in a band-shaped material such as a photographic film in a predetermined arrangement pattern, there is, for example, a punching machine described in JP-A-9-300289. In this punch, a punch and a die are operated while the running of the photographic film is intermittently stopped to form a hole in the photographic film. In order to intermittently feed the film to the punch and the die, a feed roller is arranged upstream of the die set portion in the film feed direction, and a film feed sprocket is arranged downstream of the die set portion. On the other hand, in the punching machine described in JP-A-6-339898, an air bar is arranged on the upstream side instead of the feed roller, and a vacuum drum is arranged on the downstream side instead of the sprocket roller. The air bar is formed with a large number of injection holes, and the photographic film is supported by the airflow from the holes.

In such a punch, as described in JP-A-62-136399, in order to prevent the photographic film from floating above the die during the formation of the hole, Is provided with a flat plate-shaped stripper above. This stripper is fixed to the die at regular intervals, and when operating the drilling machine,
A hole is formed in the gap between the die and the stripper through a photographic film. As a result, the position of the photographic film is regulated in the vertical direction, and the photographic film does not float upward.

Further, in a punching machine described in Japanese Patent Application Laid-Open No. 2-269598, an injection hole for injecting an airflow into a stripper and a die is provided, and the photographic film is moved up and down by the airflow injected from the injection hole. To prevent the die and stripper from contacting the photographic film. As a result, the photographic film is smoothly transported without being scratched due to contact with a die or a stripper.

[0005]

In the above conventional punch, guide members are fixed to the left and right sides of the film between the feed roller and the sprocket to restrict the position of the film in the width direction. In the case of the punching machine which performs such positioning, the interval between the left and right guide members is set to be larger than the dimension in the width direction of the film, and a play portion where the film can move in the width direction is provided. For this reason, there is a problem that the film moves between the guide members, and the positions of the holes to be formed vary greatly in the width direction.
Even when the gap between the guide members is reduced to reduce the play portion, variation occurs by the difference between the maximum value and the minimum value of the dimensional standard value of the film width, and the variation of the hole position is reduced in the width direction of the film. It cannot be smaller than the dimensional variation.

In particular, when a hole is formed in a movie film, the dimensional accuracy of the position in the width direction of the hole is extremely important in terms of product quality. It will cause it to happen.

[0007] In order to control the position of the film in the vertical direction, a stripper is provided as described above. However, if the distance between the stripper and the die is too narrow, the film is caught. The film cannot be fed smoothly. However, if the distance between the stripper and the die is too large, the film will bend in the width direction. Then, the position is shifted in the width direction by the amount of the curvature, and the positions where the holes are formed vary.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and improves the accuracy of positioning of a punching position in the width direction.
An object of the present invention is to provide a method and a punch for punching a band-shaped material in which the variation in the positions of the holes to be formed is made smaller than the variation in the dimensional standard value of the film width.

[0009]

According to the present invention, there is provided a punching apparatus comprising: a punch and a die;
An air roller that is disposed on the upstream side in the feed direction of the strip with respect to the punching device and supports the strip from the lower surface, and a sprocket roller that is disposed on the downstream side in the feed direction and feeds the strip from the punch to the downstream side. The method for perforating a band material in which a hole is formed by activating a punching device during a feed stop after intermittently feeding the band material with an air roller and a sprocket roller, wherein the band is formed between the air roller and the sprocket roller. The material is urged along a width direction orthogonal to the feed direction, and is brought into contact with a fixed guide member arranged along one side edge of the band material, thereby positioning the band material in the width direction. .

According to a second aspect of the present invention, in the method for perforating a strip material, the direction in which the air roller guides the strip material is arranged so as to be inclined with respect to the direction in which the sprocket roller feeds the strip material from the punching device. The strip is shifted and fed to the first fixed guide member fixed on the upstream side in the feed direction of the air roller so as to press one side edge of the strip, and the strip is shifted to the opposite side by the reaction force. The strip is positioned by guiding the strip by the air roller and pressing the other side edge of the strip against a second fixed guide member fixed to the punching device.

[0013] A belt-shaped punch according to a third aspect of the present invention is a punching device comprising a punch and a die, and is disposed on the upstream side of the punching device with respect to the feeding direction of the belt-shaped material. Using an air roller to be supported and a sprocket roller disposed downstream of the feed direction and feeding the band material from the punching device to the downstream side, the punching device stops feeding after the band material is intermittently fed by the air roller and the sprocket roller. In the band-shaped material punching machine for forming a hole by actuating, a fixed guide member arranged along one side edge of the band-shaped material and fixed to the punching device, and the other side edge of the band-shaped material Along the width direction of the belt-shaped material orthogonal to the feed direction, and biases the belt-shaped material toward the fixed guide member. And a de member.

[0012] Further, according to a fourth aspect of the present invention, there is provided a band-shaped material punch.
A punching device including a punch and a die, an air roller disposed on the upstream side in the feeding direction of the band-shaped material with respect to the punching device and supporting the band-shaped material from the lower surface, and disposed on the downstream side in the feeding direction to perforate the band-shaped material. A sprocket roller that feeds the belt material downstream from the device, and a punching device that operates a punching device during a feed stop after intermittently feeding the belt material with an air roller and a sprocket roller to form a hole. A first fixed guide member arranged along one side edge of the air roller and fixed to the upstream side in the feed direction of the air roller, and arranged along the other side edge of the band-shaped material and fixed to the punching device. And a direction in which the air roller guides the strip material, and a direction in which the sprocket roller sends the strip material from the punching device. The belt-like material is biased and sent in such a manner that one side edge of the belt-like material is pressed against the first fixed guide member, and the belt-like material that is biased toward the opposite side by the reaction force is disposed. It is guided by the air roller and pressed against and contacts the second fixed guide member.

[0013] The air roller has an outer peripheral surface facing the flat portion of the band material, and a plurality of injection small holes provided on the outer peripheral surface and arranged along a direction in which the band material is fed into the punching device. It is preferable that the strip material floats from the outer peripheral surface by the airflow injected from the injection small hole, and the sprocket roller has an outer peripheral surface facing a flat portion of the strip material, A meshing portion that meshes with the perforations perforated in the band-shaped member, and a plurality of injection small holes provided on the outer peripheral surface and arranged along a direction in which the band-shaped material is sent from the perforation device, It is preferable that the belt-like material is levitated from the outer peripheral surface by an airflow injected from the injection small hole.

According to a seventh aspect of the present invention, a plurality of injection holes are formed in a stripper plate provided above the die so as to face a flat portion of the band material. An air stream drilling machine characterized in that an air stream is guided from an air stream supply source to a hole, and the air stream is jetted toward a strip material passing through a gap between a die and a stripper plate. In addition, from the injection small holes formed in the stripper plate, the intermittent feeding of the band-shaped material is stopped, and when the punching device is operated to form the holes, the air flow is injected,
When the intermittent feeding of the band-shaped material is being performed, the injection of the airflow may be stopped, or the airflow may be constantly injected.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing the configuration of a film punch according to the present invention. Film drilling machine 1
Reference numeral 0 denotes a punching device 11, a film intermittent feed unit 12, and a control unit 13 that controls these components in an integrated manner. The perforation device 11 performs perforations on both sides of the photographic film 15 by one vertical movement of the punch block 16 while the intermittent film feeding section 12 stops the intermittent feeding of the continuous film 15 (hereinafter simply referred to as a film). 15a (see FIG. 6) are formed in large numbers.

The film intermittent feed section 12 includes a decompression chamber 20,
21, an air roller 22, a sprocket roller 23,
A pass roller 24 and a sprocket pass roller 25 are provided. The decompression chamber 20 is disposed upstream of the film 15 in the feed direction with respect to the punching device 11. The decompression chamber 21 is arranged downstream of the perforation device 11.

Each of the decompression chambers 20 and 21 is formed of a rectangular box having an inner width with a margin for the width of the film 15. At the top of this rectangular box, openings 20a, 2
1a is formed. The opening 20a of the decompression chamber 20
A pass roller 24 is disposed on the film entrance side of the above, and an air roller 22 is disposed on the film exit side of the opening 20a. Similarly, the decompression chamber 21
A sprocket roller 23 is disposed on the film entrance side of the opening 21a, and a sprocket pass roller 25 is disposed on the film exit side of the opening 21a.

The lower portions of the decompression chambers 20 and 21 are connected via a connection duct 27. This connecting duct 27
Is provided with a blower connection port 28, to which a blower 30 is connected via a duct 29. As a result, the film 15 of each of the decompression chambers 20 and 21 is sucked downward by maintaining the intake pressure of each of the decompression chambers 20 and 21 at a constant level, and the film 15 hangs down in a loop from the openings 20a and 21a. Thus, the film 1 is stored in the decompression chambers 20 and 21 located on the upstream side and the downstream side of the punching device 11.
5, the edges of the perforations formed on the film 15 are engaged with the teeth of the sprocket roller 23, so that the perforating device 11 and the film 1
The positioning in the feed direction of No. 5 is performed accurately.

As described above, as a method of applying tension to a film, a film intermittent feeding section provided with a decompression chamber on the upstream side and the downstream side of the punching device is disclosed in, for example, Japanese Patent Application Laid-Open No.
It is described in detail in Japanese Patent No. 300289.

The sprocket roller 23 is controlled by the control unit 13, and receives the rotation of a motor (not shown) in synchronization with the vertical movement of the punch block 16, and
Intermittently. The pass roller 24 and the sprocket pass roller 25 are continuously rotated by separately provided motors. The film feed amount L1 due to the intermittent feed of the sprocket roller 23 is set to be the same as the film feed amount in one cycle time due to the continuous feed of the pass roller 24 and the sprocket pass roller 25.

The sprocket roller 23 has a disk 2 at both ends.
3a is arranged. As shown in FIG. 3, sprocket teeth 23b arranged radially at the same pitch as the perforations 15a of the film 15 are provided on the outer peripheral surface of the disk 23a. Disk 2
3a is provided with a large number of injection holes (not shown) so as to be disposed on the entire outer peripheral surface thereof, and the sprocket teeth 23b are formed by airflow injected from the injection holes.
Is slightly lifted from the disk 23a. The location of the small injection hole may be any location as long as it faces the film 15, and may be provided on the outer peripheral surface of a portion sandwiched between two disks 23a provided with sprocket teeth 23b.

As shown in FIG. 3, the air roller 22 has a substantially fan-shaped cross section and is formed in a column shape longer than the width direction of the film 15. Of the outer peripheral surface of the air roller 22, the outer peripheral surface 22a whose section is an arc portion smoothly changes its direction from the loop portion where the film 15 is tensioned downward to the horizontal direction fed into the punching device 11. ,
Facing the film 15. A plurality of small injection holes 22b are arranged on the outer peripheral surface 22a of the air roller 22 along the direction B1 in which the film 15 is fed into the punching device 11, and the film 15 is discharged by the airflow injected from the small injection holes 22b. Is slightly raised from the outer peripheral surface 22a.

As described above, both the air roller 22 and the sprocket roller 23 cause the film 15 to float by the airflow injected from the injection small holes, so that the occurrence of scratches on the film 15 during intermittent feeding is suppressed. . An air roller 22 is disposed upstream of the punching device 11, but is not limited to this, and a cylindrical or disc-shaped feed roller is provided upstream of the punching device 11 similarly to a conventional film punch. The film 15 may be arranged, and the film 15 may be transported by the rotation of the feed roller.

The punching device 11 includes a punch block 16 and a die block 32, as shown in detail in FIGS.
Up and down drive mechanism 3 for vertically moving punch block 16
And 3. The punch block 16 is provided with two pairs of pilot guides 35 in addition to a punch body 34 for forming perforations. The punch body 34 and the pilot guide 35 are arranged in a line at the same pitch, and two lines are provided at positions corresponding to both sides of the film 15.

As shown in FIG. 3, the pilot guide 35 is provided so as to protrude from the punch body 34, and has a sharp guide surface with a tip 35a. The two pairs of pilot guides 35 perform positioning during drilling by entering each of the two perforations drilled by the punch body 34. For this reason, the film intermittent feed section 12 intermittently feeds the film 15 with the intermittent feed amount L1 so that two of the perforations perforated, which are the most upstream in the film feed direction, are located below the pilot guide 35. . As a result, the pitch between the perforations formed by each perforation is the same as that of the other perforations, and the perforations are formed at the same pitch. Note that the pilot guide 35 need only be one pair or more, and is not limited to two pairs.

The punch block 16 has a bush 36 provided thereon and a guide pin 37 provided on the die block 32.
And the guide pin 3 is driven by the vertical drive mechanism 33.
The film 15 is moved up and down between the punching position and the retracted position along 7 to pierce the film 15 set on the die block 32 to form perforations. Vertical drive mechanism 3
3, a rotary mechanism such as a well-known slider crank mechanism is used to convert the rotational force from the motor into a punch block 16.
Is converted to vertical movement. The vertical drive mechanism using the slider crank mechanism is disclosed in Japanese Patent Application Laid-Open No. 9-300028.
No. 9 is described in detail. The vertical drive mechanism 33 may use a pneumatic or hydraulic stroke type cylinder as described in Japanese Patent No. 2501310 or the like.

The die block 32 includes the punch block 16
Punch die 39 at a position corresponding to the punch body 34
However, a guide die 40 is provided at a position corresponding to the pilot guide 35, and when the punch block 16 is lowered to the punching position by the vertical drive mechanism 33, the pilot guide 35 is attached to the guide die 40 and the punch die 37 is attached to the punch die 37. The punch body 34 is inserted, and the film 15 is pierced.

As shown in FIGS. 2 and 4, above the die block 32, a film guide portion 42 for positioning the film 15 in the width direction is provided. The film guide portion 42 is arranged along one side edge of the film 15 and is fixed to the die block 32 at a position facing the fixed guide member 43. Film 1 placed along the edge
A moving guide member 44 movably attached along the width direction of the film 5;
And a spring 45 biased along the width direction. As a result, the film 15 set on the die block 32
The movable guide member 44 allows the fixed guide member 43
To the die block 32 and the film 15.
Since the positioning in the width direction is performed with high accuracy, the perforations 15a formed on the film 15 are less displaced in the width direction.

In the first embodiment, the positioning of the film 15 in the width direction is performed by using the moving guide member that urges the film 15 in the width direction. However, the present invention is not limited to this. As shown, the direction in which the air roller 22 guides the film 15 is arranged so as to be inclined with respect to the direction in which the sprocket roller 23 sends out the film 15, and the first direction is arranged upstream of the air roller 22 in the feeding direction.
The film 15 is shifted and fed in such a manner that one side edge of the film 15 is pressed against the fixed guide member 46, and the film 15 shifted to the opposite side by the reaction force is guided by the air roller 22 to form the die block 32. A method of pressing the other side edge against the second fixed guide member 47 fixed to the second fixing guide member 47 may be used. Hereinafter, a second embodiment of the present invention using this method will be described, but the same components as those described in the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

The air roller 22 shown in FIG.
The center axis 22c of the arrow a has an inclination a with respect to a direction Y perpendicular to a direction X in which the sprocket roller 23 intermittently feeds the film 15. The film 15 includes an air roller 22
In the feeding direction upstream side is fed with biased to be pressed with a force F ₁ on the first fixed guide member 46 disposed along one side edge, which is biased to the opposite side by the reaction force The film 15 is guided by the air roller 22 and is disposed along a second side edge of the film 15.
It is pressed with a force F ₂ on the fixed guide member 47. By being pressed against the second fixed guide member 47, the film 15 is positioned in the width direction.
5 is small in the width direction of the perforations 15a.

Incidentally, in the first and second embodiments, depending on the type of the film 15 or the first
Depending on the strength of the urging force of the moving guide member 44 in the second embodiment, the magnitude of the inclination a in the second embodiment, etc., the force for pressing the film 15 during positioning in the width direction may be too large. The film 15 may bend in the width direction. In this case, as described in the following example, an airflow is injected from above the film 15 and the film 15 is pressed against the die block 32 by this airflow, so that the film 15 is prevented from bending. I just need. In the following, an example in which the film 15 is pressed against the die block 32 by injecting an air current will be described. Regarding the positioning method in the width direction, the same method as in the first embodiment is applied, and the first method is applied. The same components as those described in the embodiment will be denoted by the same reference numerals, and detailed description will be omitted.

As shown in FIGS. 7, 8 and 9, a plurality of injection holes 50 are formed above the die block 32 so as to face the film 15 and to inject airflow toward the film 15. The air stripper plate 51 is provided. The air stripper plate 51 is screwed to the fixed guide member 43 with a plurality of screws 52 so as to be fixed to the die block 32 at a fixed interval. Die block 32 and air stripper plate 5
The distance from the gap 1 is set so that the film 15 can be smoothly intermittently fed without being caught by the die block 32 and the air stripper plate 51. In FIG. 7, the punch block is not shown in order to prevent the drawing from being complicated,
Actually, the same punch block 16 as in the first embodiment is used.
It has.

A large number of injection holes 50 are formed on the lower surface of the air stripper plate 51 so that the injection holes 50 are injected almost entirely over the film 15 located on the upper surface of the die block 32. One end of the air stripper plate 51 is connected to a hose 53 connected to a supply source for supplying air, such as a compressor. Further, the inside of the air stripper plate 51 is hollow, and an air supply passage 54 for guiding the air flowing from the hose 53 to the small injection hole 50 is formed.

The size of the small injection hole formed in the air stripper plate 51 is preferably as small as 3 mm or less, more preferably, so that the injection can be reliably performed toward the film 15. Has a diameter of 1 mm to 0.05 mm.

In this example, as shown in FIGS. 10 and 11, the moving guide member 44 is provided with a plurality of air flow guide notches 55. The airflow guide notch 55 is disposed facing one side edge of the film 15, and the airflow from the injection small hole 50 is injected onto the upper surface of the film 15. By providing the film, a part of the airflow from the small injection hole 50 is allowed to also reach the lower surface of the film 15. As a result, a small amount of airflow is also guided to the lower surface of the film 15 and the film 15 is slightly lifted from the die lock 32.
Does not directly touch the die block 32.

The air stripper plate 51 is provided on the upper surface side of the die block 32, that is, the punch block 16
, So that the punch body 34 and the pilot guide 35 provided integrally with the punch block 32 do not prevent the perforation from being formed.
Guide holes 56 are formed in the air stripper plate 51 at positions corresponding to the punch body 34 and the pilot guide 35.

In the case of this example, first, as shown in FIG.
When the intermittent feed 5 is performed, the supply of air from the hose 53 is stopped to prevent the airflow from being injected into the film 15. At this time, the film 15 is curved such that its cross section in the width direction becomes upwardly convex by the bias from the moving guide member 44. The film 15 is fed by one feed amount L1 and the sprocket roller 2
When the feeding by 3 is stopped, as shown in FIG. 12B, air is supplied from the hose 53 and the airflow is injected from the small injection hole 50 toward the film 15. Injection hole 5
The film 15 pressed against the die block 32 by the injection of the airflow from 0 has a curved cross section in the width direction.
It has a linear shape substantially parallel to the die block 32, and is also positioned in the width direction by the urging of the moving guide member 44.

Then, while the airflow is being injected from the small injection holes 50 to the film 15, the punch block 16 is lowered as shown in FIG.
Thus, a perforation 15a is formed on the film 15. At this time, the film 15 is prevented from being curved by the injection of the air current and has a linear cross section.
Since the positioning in the width direction is performed by the urging from the moving guide member 44, the perforations 15a formed on the film 15 are less likely to be displaced. Further, as described above, since the moving guide member 44 is provided with the airflow guide notch 55, the film 15 is not damaged by the contact with the air stripper plate 51 and the die block 32.

In the above example, the same method as in the first embodiment is applied to the positioning method in the width direction, but the present invention is not limited to this, and the same method as in the second embodiment is applied. You may. In the above example, when the intermittent feeding of the film 15 is stopped and the perforation 15a is formed, the airflow is injected from the injection small holes 50, and when the film 15 is intermittently fed, the airflow is injected from the injection small holes 50. However, the present invention is not limited to this, and the airflow may be constantly injected from the injection small holes 50 to press the film 15 against the die block 32.

In the above embodiment, an air flow source such as a compressor is connected, and the air stripper plate 51 is connected.
However, the present invention is not limited to this. For example, a bellows or the like is connected from above the air stripper plate 51 to the punch block 16 so as to form an airtight structure, and a valve is provided in the bellows so as to be openable and closable. When a hole is formed in the film 15 by using such a punching device, the air stripper plate 51
Since the volume in the bellows connecting the block and the punch block 16 decreases, the pressure increases. By utilizing the pressure increase, the air in the bellows is ejected from the ejection holes 50 formed in the air stripper plate 51, and the film 15
May be pressed toward the die block 32. Then, the punch block 1 after forming a hole in the film 15
When the valve 6 rises, a valve provided on the bellows is opened inward, and air is supplied from the valve into the bellows to supply air.

The film for carrying out the present invention may be applied not only to 135-type or advanced photo system type photographic films, but also to cinema films. Further, the present invention can be used for a web-like sheet formed of a material such as a resin film or paper.

[0042]

EXAMPLE In this example, the positioning of the film 15 in the width direction was performed by the method described in the second embodiment of the present invention. For this reason, the film 15 is shifted and sent in such a manner that one side edge of the film 15 is pressed against the first fixed guide member 46, and the film 15 shifted to the opposite side by the reaction force has an inclination a. A film punching machine was used, which was guided by the air roller 22 inclined as described above and pressed against the second fixed guide member 47.

At this time, the condition of the inclination a of the air roller 22 was changed, and the position of the perforation 15a formed on the film 15 was measured. The film 15 used for the measurement is a 35 mm movie film.

Table 1 shows the measured values under each condition. Note that E
The value is an interval from one side edge of the film 15 to the perforation 15a as shown in FIG. Also,
The guide member is fixed to the left and right sides of the film as used in the conventional film punch, and the positioning method for regulating the position of the film in the width direction is also described. .

[0045]

[Table 1]

According to this, it is understood that the inclination a = 1.5 ° is the optimum condition, and that there is little variation in the position in the width direction where perforations are formed. In a movie film, it is preferable that the position in the width direction where the perforations are formed is smaller than the JIS standard in order to reduce shaking during projection. In other words, the smaller the variation of the E value, the better. Therefore, the present invention is very effective especially when used in the production of movie films.

[0047]

As described above in detail, according to the present invention, between the air roller and the sprocket roller, the strip is urged in the width direction orthogonal to the feeding direction, and one of the strips is urged. By contacting the fixed guide member arranged along the side edge, or by arranging the direction in which the air roller guides the band material so as to be inclined with respect to the direction in which the sprocket roller sends the band material from the punching device, The belt-like material is shifted and fed so that one side edge of the belt-like material is pressed against the first fixed guide member fixed on the upstream side in the feeding direction, and the belt-like material shifted toward the opposite side by the reaction force is removed. Guided by an air roller, the other side edge of the strip is pressed against the second fixed guide member fixed to the punching device, thereby positioning the strip in the width direction. Variations in the width direction of the position of the Jo material hole formed is reduced.

Further, in the strip punching machine according to the seventh aspect, the airflow is injected above the die so as to face the flat portion of the strip and toward the strip passing through the gap with the die. Since the air stripper plate having the plurality of small injection holes is provided, it is possible to perform accurate positioning without bending the strip.

[Brief description of the drawings]

FIG. 1 is a schematic view of a film punch according to the present invention.

FIG. 2 is a perspective view showing a sprocket roller, a punching device, and an air roller.

FIG. 3 is a schematic diagram showing a configuration around a sprocket roller, a punching device, and an air roller.

FIG. 4 is a top view of the vicinity of the sprocket roller, the punching device, and the air roller when viewed from above the die block.

FIG. 5 shows a film punch according to a second embodiment of the present invention;
FIG. 4 is a top view of the vicinity of the sprocket roller, the punching device, and the air roller when viewed from above the die block.

FIG. 6 is an explanatory diagram showing measurement points when measuring the position of perforations formed on a continuous film.

FIG. 7 is a perspective view showing a perforation device of another embodiment different from that shown in FIGS. 2, 3, 4, and 5;

FIG. 8 is a schematic diagram showing the configuration of the punching device shown in FIG.

FIG. 9 is a top view of the periphery of a die block constituting the punching device shown in FIG. 7;

FIG. 10 is a cross-sectional view of a main part of the die block shown in FIG. 9;

FIG. 11 is a longitudinal sectional view of a main part of the die block shown in FIG. 9;

12 is an explanatory diagram showing an example of the operation of the punching device shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 film punching machine 11 punching device 12 film intermittent feeding section 15 continuous photo film 15a perforation 16 punch block 22 air roller 22a outer peripheral surface 22b injection small hole 23 sprocket roller 23a disk portion 23b sprocket tooth 32 die block 34 punch body 35 pilot guide 42 Guide part 43 Fixed guide member 44 Moving guide member 45 Spring 46 First fixed guide member 47 Second fixed guide member 50 Injection small hole 51 Air stripper plate 55 Air flow guide notch

Claims (9)

[Claims] 1. A punching device comprising a punch and a die, an air roller disposed on the upstream side in the feed direction of the band material with respect to the punching device and supporting the band material from the lower surface, and disposed on the downstream side in the feed direction. And a sprocket roller for feeding the strip material from the punching device to the downstream side, and a method for punching the strip material by forming a hole by operating the punching device while the feed is stopped after intermittently feeding the strip material by the air roller and the sprocket roller. In the above, between the air roller and the sprocket roller, the belt-like material is urged along a width direction orthogonal to the feed direction, and a fixed guide member is arranged along one side edge of the belt-like material. A method for perforating a strip material, wherein the strip material is positioned in the width direction by contacting the strip material. 2. A punching device comprising a punch and a die, an air roller disposed on the upstream side in the feed direction of the strip with respect to the punching device, and supporting the strip from the lower surface, and disposed on the downstream side in the feed direction. And a sprocket roller for feeding the strip material from the punching device to the downstream side, and a method for punching the strip material by forming a hole by operating the punching device while the feed is stopped after intermittently feeding the strip material by the air roller and the sprocket roller. In the first fixed guide, the direction in which the air roller guides the strip is inclined with respect to the direction in which the sprocket roller feeds the strip from the punching device, and the first fixed guide is fixed to the upstream side in the feed direction of the air roller. The strip is fed in a biased manner so that one side edge of the strip is pressed against the member, and the strip is biased to the opposite side by the reaction force. Perforating the band-shaped material by guiding the material with the air roller and pressing the other side edge of the band-shaped material against a second fixed guide member fixed to the punching device. Method. 3. A punching device comprising a punch and a die, an air roller disposed on the upstream side in the feed direction of the strip with respect to the punching device, and supporting the strip from the lower surface; and an air roller disposed on the downstream side in the feed direction. And a sprocket roller for feeding the strip material downstream from the punching device, and a punching machine for forming a hole by operating the punching device during the stoppage of the feed after intermittently feeding the strip material by the air roller and the sprocket roller. In the above, a fixed guide member arranged along one side edge of the band-shaped material and fixed to the punching device, and arranged along the other side edge of the band-shaped material, facing the fixed guide member. A moving guide member that moves along the width direction of the strip material orthogonal to the feed direction and biases the strip material toward the fixed guide member side. Drilling machine. 4. A punching device comprising a punch and a die, an air roller disposed on the upstream side in the feed direction of the strip with respect to the punching device, and supporting the strip from the lower surface; and an air roller disposed on the downstream side in the feed direction. And a sprocket roller for feeding the strip material downstream from the punching device, and a punching machine for forming a hole by operating the punching device during the stoppage of the feed after intermittently feeding the strip material by the air roller and the sprocket roller. A first fixed guide member arranged along one side edge of the band material and fixed to an upstream side in a feed direction of the air roller, and arranged along the other side edge of the band material, A second fixed guide member fixed to the apparatus, and the sprocket roller feeds the strip from the punching device in a direction in which the air roller guides the strip. The band is arranged so as to be inclined with respect to the direction in which the band is to be ejected, and the band is shifted in a direction so as to press one side edge of the band against the first fixed guide member. The band-shaped punching machine characterized in that the band-shaped material is guided by the air roller, pressed against the second fixed guide member and brought into contact therewith. 5. The air roller has an outer peripheral surface facing a flat portion of the band-shaped material, and a plurality of injection small holes provided on the outer peripheral surface and arranged along a direction in which the band-shaped material is fed into a punching device. The band-shaped punch according to claim 3 or 4, wherein the band-shaped material is levitated from the outer peripheral surface by an airflow injected from the injection small hole. 6. The sprocket roller is provided on the outer peripheral surface facing the flat portion of the band-shaped material, a meshing portion provided on the outer peripheral surface and meshing with a perforation formed in the band-shaped material, and provided on the outer peripheral surface. And comprising a plurality of injection holes arranged along a direction in which the band material is sent out from the punching device, wherein the band material is caused to float from the outer peripheral surface by an air flow injected from the injection holes. A drilling machine according to any one of claims 3 to 5. 7. A plurality of injection holes are formed in a stripper plate provided so as to face a plane portion of the strip material above the die, and an air flow is guided to the injection holes from an airflow supply source. A strip punching machine, characterized in that an air current is injected toward a strip passing through a gap between a die and a stripper plate. 8. The intermittent feeding of the band-shaped material is stopped from the small injection holes formed in the stripper plate, and when the perforation device is operated to form a hole, an air current is jetted, and the band-shaped material is discharged. 8. The band-shaped punch according to claim 7, wherein the injection of the air current is stopped when the intermittent feeding is performed. 9. The band-shaped punch according to claim 7, wherein an air current is constantly jetted from the jet holes formed in the stripper plate.