JP2017209739A - Film-formed article punching method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film-formed article punching method capable of increasing productivity by preventing a punched film member from staying in a reservoir in a blade-shaped cylinder to reduce punched film recovery work, and making easy and inexpensive manufacturing with a simple structure.SOLUTION: This film-formed article punching method is provided with a mechanism for conveying a punched film member to the outside in a spring piece added blade die having a film processing press cutting blade and a spring piece near the press cutting blade, and pinches a film by patches provided to the spring piece of the spring piece added blade and a press surface, cuts the film to be a film member by pressing, and conveys the film member pushed out by the spring piece after the cutting.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a punching method for a film-shaped molded product.

  With the increase in information capacity, development of optical interconnection technology that uses optical signals not only for communication fields such as trunk lines and access systems but also for information processing in routers and servers is underway. In particular, as an optical transmission path for using light for short-distance signal transmission between boards in a router or a server device, optical fibers that have a higher degree of freedom in wiring and can be densified than optical fibers. It is desirable to use a waveguide. Among them, an optical waveguide using a polymer material excellent in processability and economy is promising.

  As one method for processing the outer shape of the optical waveguide substrate with high accuracy, dicing (cutting) with a blade (rotating tooth) has been performed. In this method, the cut surface is cut while being polished with a blade, so that the cut surface is finished smoothly, and when it is joined to an optical element, an optical fiber or the like, light loss can be combined. However, since it is cutting by dicing, it takes time, and there are some aspects that cannot cope with complicated shapes. In order to cope with this, punching press processing using a die is performed, and Patent Document 1 proposes a method of punching an optical waveguide with a punching blade. This method uses a flat blade with an arithmetic mean roughness of the blade surface of less than 0.02 μm, and punches the optical waveguide from the substrate side, so that the light incident end surface and the light emitting end surface can be cut smoothly. Patent Document 2 proposes a method for cutting an optical film for display, and there is a method for cutting a belt-like sheet composed of a separator film, an adhesive layer, and an optical film body layer by pushing a punching blade from the optical film body layer side. Proposed. These patent documents show that the orientation of the layer structure to be cut is important using a sharp blade.

JP 2009-210806 A JP 2012-058574 A

In the punching of the belt-like sheet, deformation, undulation, and wrinkle are generated, and it is difficult to perform precise outer shape processing. When punching is performed in this state, the belt-like sheet may be broken or broken. In order to cope with this, a method of punching a film-shaped molded article using a blade with a spring piece was proposed.
However, this method is inferior in productivity because the punched film member must be taken out every time it is punched. In addition, the film member may get caught in the blade mold and may not be pushed even by the spring of the spring piece.
The present invention solves the above-mentioned problems, prevents the punched film member from collecting in the pool part in the blade-shaped cylinder, can improve the productivity by eliminating the work of collecting the punched film, An object of the present invention is to provide a punching method for a film-shaped molded product that can be easily and inexpensively manufactured with a simple structure.

  The present invention has been made to solve the above-mentioned problems. A cylindrical punching blade for punching is attached to a film, and the punched film (film member) is inserted into the cylindrical punching blade through the back side of the film (the processed film surface). In the punching blade die that is fed upward), the punching film (film member) is conveyed to the outside along the back surface of the film to be processed (lower surface of the backing plate).

That is, the present invention relates to the following.
(1) In a blade type with a spring piece having a pressing blade for film processing and a spring piece having an automatic discharge mechanism for a film member punched in the vicinity of the pressing blade, the punched film member is conveyed to the outside. A mechanism having a spring plate with a spring piece and a pressing plate provided on a pressing surface facing the blade, and sandwiching the film between the spring piece with the spring piece and the pressing plate, and cutting the film by pressing A film processing method for processing into a film member, comprising at least a process A for pressing the film with the spring piece, and a process B for cutting the film with the pressing blade to form the film member, wherein the process B includes A film which is carried out during the process A and which conveys the film member extruded by the spring piece after the cutting process to the outside. A punching method for lum shaped products.
(2) In the punching method for a film-shaped molded article according to (1) above, the punched film member is temporarily held in the cylinder of the press cutting blade, and the film member punched by the reaction of the spring piece is placed in the blade-shaped cylinder A punching method for a film-shaped molded product which is extruded from above to the film surface to be processed, grips the film member from the lower surface side of the backing plate, and transports it to the outside.
(3) The upper surface of the spring piece of the blade type with the spring piece before cutting is higher than the apex of the press cutting blade on the side of the contact plate provided on the press surface or the same height as the apex of the press cutting blade, In the step B, the upper surface of the spring piece is moved to the opposite side of the pressing plate provided on the pressing surface from the apex of the pressing blade while pressing the film, and the film is cut (1) or (2). The film processing method as described.
(4) The film processing method according to any one of (1) to (3), wherein the spring piece is provided on the film member side between the press cutting blades.
(5) The punching method for a film-shaped molded product according to any one of (1) to (4), wherein the pressing blade is a single blade having a vertical surface on the spring piece side.

  The method for punching a film-shaped molded article of the present invention can prevent the punched film (film member) from collecting in the pool portion in the blade-shaped cylinder, and can improve productivity by eliminating the work of collecting the punched film. Furthermore, it is possible to provide a method for punching a film-shaped molded article that can be easily and inexpensively manufactured with a simple structure.

It is sectional drawing of the blade type | mold with a film member automatic discharge mechanism which shows the punching method of the film-form molded product of this invention. It is sectional drawing explaining the mechanism which conveys the punched film member to the exterior.

In the present invention, when “film” is indicated, it indicates a workpiece before cutting or the cutting blade is in a non-penetrating state, and when “film member” is indicated, the pressing blade is in a through state or after cutting. It shall represent the workpiece.
Further, in the present invention, “film” represents a strip having a thickness of 2 mm or less, and is used synonymously with a sheet.

The present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view of a blade mold with a film member automatic discharge mechanism showing a punching method for a film-shaped molded article of the present invention.
A pressing blade 1 is fixed to a pedestal 5 and is sandwiched between the pressing blades, and a spring piece 2 is provided. The pressing blade 1 and the spring piece 2 constitute a blade die 3 with a spring piece. The spring piece 2 includes a piece and a spring. One end of the spring faces the lower surface of the piece, and the other end is fixed to a spring adjusting jig 10 fixed in the pedestal. The height of the piece is adjusted by a spring adjustment jig, and the upper surface of the piece is adjusted to be higher toward the contact plate 4 than the top of the pressing blade 1 or to be the same height as the top of the pressing blade 1. Select a spring that holds the film between the upper surface of the piece and the backing plate immediately before cutting, has a flat surface without wrinkles in the restrained film, and has a spring force that can push out the cut film member from the pressing blade 1. Use. For this reason, normally, the upper surface of the piece is set to be higher toward the contact plate 4 on the press surface side than the apex of the pressing blade 1.
In the film 7 to be cut, an alignment hole is processed in advance for alignment, and an alignment pin is inserted into the hole to align the cutting position.
The bladed die 3 with a spring piece provided on the pedestal 5 is installed on the bottom plate of the press machine together with the pedestal, and fixes the contact plate 4 to the top plate. When the switch of the press machine is pressed, the upper plate of the press machine is lowered, the distance from the lower plate is narrowed, the contact plate 4 and the film 7 are in contact, and while further contacting, the upper surface of the spring piece 2 and the film 7 are moved. The film is held between the contact plate 4 and the spring piece 2 so that the film is flat. When the pressing surface is further lowered, the pressing force by the spring piece 2 is strengthened and firmly fixed, the vertex of the pressing blade 1 comes into contact with the film surface at the planned cutting position, the cutting is continued, and the vertex of the pressing blade 1 is applied to the contact plate 4. When the cutting is completed on the surface of the backing plate 4, the press machine is stopped from descending, and the ascent starts.
As the upper surface of the press machine rises, the film member sandwiched and cut by the pressing blade 1 is pushed out of the cutting blade by the spring piece 2 and placed on the upper surface of the piece, so that the cut film member can be easily taken out. It becomes.
When the press machine is operated, the positioning pin 6 is pushed by the backing plate 4, compresses the spring provided on the base and sinks into the base, and a hole is made in a portion corresponding to the position of the positioning pin 6 of the backing plate. Make sure that the alignment pins are inserted.
Conditions such as the processing speed and stop position of the press machine are adjusted by the film to be cut.

At the time of punching, the punched film member is temporarily held in the cylinder of the pressing blade 1, and the film member 8 punched by the reaction of the spring piece 2 is pushed out from the pressing blade type cylinder to the upper side of the film to be processed. Then, as shown in FIG. 2, a grip portion 9 is inserted between the lower surface of the backing plate and the film to be processed to grip and take out the film member, and the film member is gripped from the lower surface of the backing plate and conveyed to the outside.
The gripping part 9 sucks and holds the punching member, takes it out from the punching press, transports it, and moves it to the punching member storage container.
And the blade type | mold 3 with a spring piece moves to the position for punching out a new film member. At this time, when the film to be processed has strength, if the film is moved as it is, the piece pushed out above the film to be processed can move to the lower surface side of the film to be processed by the elasticity of the spring. In general, this method may be used, and the use of plastic such as polyethylene, polypropylene, and polytetrafluoroethylene for the piece is effective in preventing scratches on the film. If the film to be processed is not strong, the film to be processed may be broken. Therefore, the upper surface of the spring piece is moved to the lower surface of the film to be processed and moved to the new lower surface of the film to be processed. The movement of the spring piece includes a mechanism for moving the spring adjustment jig 10 up and down, a mechanism for moving only the piece up and down, and the like. A system in which an electromagnet is provided in the spring adjustment jig 10 and the spring holding the spring adjustment jig is expanded and contracted by magnetic force is easy to control mechanically.

In the present invention, after the film is pressed by the spring piece or simultaneously with the pressing, the cutting process is performed by the pressing blade, so that deformation of the film at the time of the cutting process can be suppressed, and a film member that is not broken or broken is obtained. be able to.
Moreover, in this invention, since a deformation | transformation of a film can be suppressed by a series of cutting processes by providing a spring piece in the vicinity of a pressing blade, a film can be processed efficiently. In addition, by providing a spring piece in the vicinity of the press cutting blade, it is easy to secure the correlation between the position of the blade and the spring piece, and the film can be pressed accurately against the cutting processing position and can be cut.
Thereby, by making the upper surface of the spring piece of the blade type with the spring piece before the cutting process higher to the contact plate provided on the press surface side than the apex of the pressing blade, or the same height as the apex of the pressing blade, Since the film can be suppressed before the processing starts or simultaneously with the processing start, the shift of the film can be suppressed during the cutting process, and processing with high positional accuracy can be performed.
Moreover, since the state which always suppresses a film with a spring piece can be maintained from the beginning of a cutting blade entering a film to completion of cutting, it is preferable because deformation of the film occurring during processing can be suppressed.

  When the film is cut with a blade type having another pressing blade in the vicinity of one pressing blade, a compressive stress is generated in the film between the two pressing blades, and the compressive stress is bent and bent on the film member. There is a possibility of causing deformation such as breakage. Therefore, by providing the spring piece between the two press cutting blades, the film can be suppressed simultaneously with the cutting process or before the cutting process, and deformation such as bending, bending, and breaking can be suppressed.

When the film is cut without using the spring piece and the film member is sandwiched between the blades, it is necessary to physically eject the film member. In particular, forcibly discharging the film member between the blades may cause the film member to break or bend. However, in the present invention, since there is an automatic discharge mechanism capable of discharging the film member between the blades by the reaction of the spring piece, there is no concern about the above.
In addition, since it is possible to prevent the film member from being caught in the gap between the blades after cutting, there is no need for a separate process for forcibly discharging the film member from the gap between the blades, and more efficient processing. Can be done.
By using the blade type with a spring piece as described above, deformation of the film member can be suppressed, and the film can be cut with high productivity.
Hereinafter, each member used in the present invention will be described in detail.

[Process A]
The method for punching a film-shaped molded article of the present invention includes a step of pressing the film with a spring piece as step A. Step A is a step of pressing the film with a pressing plate on the press surface and a spring piece when cutting the film. By pressing, there is an effect of suppressing deformation of the film.

[Step B]
The method for punching a film-shaped molded article of the present invention includes a step of cutting the film with a pressing blade as step B.

[Order]
Process B is performed during process A. In the present invention, “performed during the process A” means that at least the process A is continued from when the pressing blade enters the film until the pressing blade penetrates the film to form a film member. Preferably, the process A is continued before the pressing blade enters the film.

[Step C]
The film processing method of this invention has the process of discharging | emitting a film member with a spring piece from a pressing blade as process C. The punched film member is temporarily held in the cylinder of the pressing blade, and the film member punched out by the reaction of the spring piece is pushed out from the inside of the pressing blade type cylinder above the film surface to be processed. Thereby, deformation of the film member when the film member is discharged from the pressing blade can be suppressed, and further, the film member can be prevented from being caught between the pressing blade and the cutting blade after the cutting process.

[Step D]
In the film processing method of the present invention, the film member punched as step D is gripped from the bottom surface side of the contact plate and conveyed to the outside.
Then, the blade type with the spring piece is moved to the next film cutting position.

[Blade type with spring piece]
The blade type with a spring piece in the present embodiment has a pressing blade and a spring piece for cutting the film. The press cutting blade is preferably a Thomson blade manufactured by bending a single blade and incorporating it into a plywood. From the viewpoint of processing accuracy, it is more preferable that it is a pinnacle blade finished by sharpening the tip of the etching blade, and from the viewpoint of the strength of the blade mold, it is integrated with a pedestal that can make the blade angle more acute by NC cutting A sculpture blade is more preferable.

[Blade shape]
As for the shape of the blade in this embodiment, the tip angle of the blade is preferably 15 to 60 degrees. From the viewpoint of the life of the blade, it is more preferable to be from 20 degrees to 50 degrees, and from the viewpoint of processing accuracy, it is more preferable to be from 25 degrees to 30 degrees. Further, in order to reduce the stress generated on the film surface between the blades in the process B, as shown in FIG. 1, a single blade with the spring piece side as a vertical surface (only the blade on the side opposite to the film member is inclined). A single blade) may be used.

[Spring piece (height, shape, material, spring strength)]
The spring piece in the present embodiment will be described in detail below.
The spring piece is also an automatic discharge mechanism for the film member installed between the blades. Furthermore, since the film can be cut while being pressed by the spring piece, the processing accuracy is improved. The height of the spring piece is preferably 0 mm to 0.3 mm protruding from the apex (tip) of the pressing blade, and more preferably 0.1 mm to 0.2 mm from the viewpoint of cutting while holding the film. The shape of the spring piece is preferably 0.1 mm to 0.5 mm smaller than the film member, more preferably 0.2 mm to 0.3 mm from the viewpoint of relaxation of deformation stress on the film member, and the outer periphery has a radius of curvature of 0. When the chamfering of 1 mm is performed, damage to the film member can be reduced.
The material of the spring piece may be any material that can be easily processed, such as plastic. Aluminum is preferably used from the viewpoint of reducing foreign matter generation during cutting, and stainless steel is more preferably used from the viewpoint of durability. Further, the strength of the spring is preferably 1 N / m to 50 N / m, more preferably 5 N / m to 20 N / m from the viewpoint of suppressing stress on the film member, and 10 N / m from the viewpoint of improving the discharge performance of the film member. More preferably, it is ˜15 N / m.

[Catch plate (shape, material, pressure)]
The backing plate used in the present embodiment will be described in detail below.
The material of the backing plate is preferably a flat plate having a certain degree of hardness, such as a phenol plate. An acrylic board is more preferable from the viewpoint of reducing the generation of foreign matter during cutting.
The processing pressure by the press machine is preferably 1 kN to 45 kN, more preferably 5 kN to 20 kN from the viewpoint of suppressing stress of the film member, and further preferably 10 kN to 15 kN from the viewpoint of processing position accuracy.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples unless it exceeds the gist.
Example 1
Below, the processing method of the film of this invention is demonstrated in detail.
As the press cutting blade, stainless steel (SUS304) was used, and “Pinnacle blade (manufactured by Kuramochi Co., Ltd.)” produced by an etching method was used. As a result of observing the cut surface shape of the film member, the blade angle was set to the best 30 degrees. The spring piece was made of stainless steel (SUS304), and the size was set 0.5 mm smaller than the pressing blade. Pinnacle blade alignment pins are inserted into the alignment holes designed in the film, and the blade type with the spring piece and the film incorporating the pinnacle blade and the spring piece and the film are hydraulic press machine (OBS-45, Komatsu Industries Co., Ltd.) Installed). Next, an acrylic plate (plate thickness: 4 mm) was fixed onto the film so as not to be displaced, and the film was pressed and cut by a hydraulic press.
The cut film member is adsorbed by the open cell polyethylene sintered body provided in the aluminum frame from the lower surface side of the backing plate of the hydraulic press as shown in FIG. 2, and is provided outside the hydraulic press. The container was taken out. The polyethylene sintered body can be adsorbed by being connected to a vacuum pump through a support tube holding an aluminum frame.
It was confirmed that the film member was automatically discharged by the spring piece by the cutting process. Moreover, the cutting process can provide a highly accurate film member that is free from deformation and misalignment of the film member, and the punched film member can be conveyed to an external storage container.

(Example 2)
The pinnacle blade used in Example 1 was changed from stainless steel (SUS304) to an engraving blade (manufactured by Kuramochi Co., Ltd.) integrated with the base by NC cutting. Except that, cutting was performed in the same manner as in Example 1. As a result, a more accurate film member free from abnormalities in the effects, deformation of the film member, and positional deviation could be obtained, and the punched film member could be transported to an external storage container.

  The punching method for a film-shaped molded product of the present invention can suppress deformation of the film during cutting, can obtain a punched product that is not broken or broken, and the punched film member is in a blade-shaped cylinder. It is possible to increase the productivity by preventing the film from being accumulated in the accumulation portion and eliminating the work of collecting the punched film. Furthermore, it can be easily and inexpensively manufactured with a simple structure, and can be applied to a wide range of fields such as optical relations, board / wiring board relations, and film relations.

1. Press cutting blade Spring piece 3. 3. Blade type with spring piece 4. Placing plate Pedestal 6. 6. Alignment pin Film 8. Film member9. Gripping part (film member unloading)
10. Spring adjustment jig

Claims (5)

  In a blade type with a spring piece having a pressing blade for film processing and a spring piece having an automatic discharge mechanism for a film member punched in the vicinity of the pressing blade, a mechanism for conveying the punched film member to the outside is provided. A cutting plate with a spring piece and a contact plate provided on the pressing surface facing the blade, and the film is sandwiched between the spring piece and the contact plate with a spring piece and pressed to cut the film. A film processing method for forming a film member, comprising at least a step A in which the film is pressed by the spring piece, and a step B in which the film is cut by the pressing blade to form the film member, wherein the step B is the step A film shape that is carried out during A and conveys the film member extruded by the spring piece after cutting. Stamping method of molding products.   2. A method for punching a film-shaped molded article according to claim 1, wherein the punched film member is temporarily held in the cylinder of the press cutting blade, and the film member punched by the reaction of the spring piece is processed from the blade-shaped cylinder into the film to be processed. A punching method for a film-like molded product, which is extruded above the surface, grips the film member from the lower surface side of the backing plate and transports it to the outside.   The upper surface of the spring piece of the blade type with the spring piece before cutting is higher than the apex of the press cutting blade on the side of the contact plate provided on the press surface or the same height as the apex of the press cutting blade, and the step B 3. The film according to claim 1, wherein the upper surface of the spring piece moves to the side opposite to the contact plate provided on the pressing surface from the top of the pressing blade while pressing the film, and cuts the film. Punching method for shaped products.   The punching method of the film-shaped molded product as described in any one of Claims 1-3 with which the said spring piece is comprised by the film member side between the said press cutting blades.   The punching method for a film-shaped molded product according to any one of claims 1 to 4, wherein the pressing blade is a single blade having a vertical surface on the spring piece side.

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