JP2003103494A - Belt-like material cutting method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cutting quality in cutting a belt-like material to be cut in a belt-like cutting method and device. SOLUTION: A teremp ribbon is placed on a receiving surface 64 where a cutting blade recess groove 62 is opened, and the knife-like cutting blade 60 is moved into the cutting blade recess groove 62 through the teremp ribbon from the opposite side to the receiving surface 64 side to cut the teremp ribbon. In this cutting, the angles θ1, θ' of inclination of the knife edge tip slant faces 61, 61' forming the tip of the cutting blade 60 are made larger than the angles ω1, ω1' of inclination of groove slant faces 63, 63' formed in the opening part of the cutting blade recess groove 62 corresponding to the knife edge tip slant faces 61, 61'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-shaped material cutting method and apparatus, and more particularly to a belt-shaped material cutting method and apparatus for cutting a belt-shaped object using a knife-shaped cutting blade.

[0002]

2. Description of the Related Art Conventionally, there has been known an apparatus for cutting a strip-shaped object with a knife-shaped cutting blade. For example, in a device for cutting a light-shielding cloth-like member arranged at a film drawing port of a cartridge called a teremp ribbon when manufacturing a cartridge containing a photographic roll film, a teremp which becomes an object to be cut is used. This ribbon cutting is carried out by placing the ribbon on a cutting receiving portion having a placing surface and a cutting blade escape groove opening on the placing surface, and moving the cutting blade through the telemeter ribbon into the cutting blade escape groove. is doing.

When cutting an object to be cut with such a band-shaped object cutting device, the cutting blade extends in the width direction of the cutting blade escape groove orthogonal to the moving surface of the cutting blade when cutting the object. By limiting the runout within a predetermined range, the cutting blade is prevented from coming into contact with the mounting surface, the groove side surface of the cutting blade clearance groove, or the like.

As the material of the above-mentioned telemp ribbon, pile knitted fabric or pile woven fabric generally called velvet is used. These are ones in which pile yarns are implanted in the base fabric portion and the pile yarns are erected with respect to the plane of the base fabric, and the erected pile yarns ensure the necessary light-shielding property.

[0005]

By the way, in cutting the above-mentioned strip-shaped object, the sharpness of the cutting depends on the width of the cutting blade relief groove, and if the width of the cutting blade relief groove is wide, the cutting blade will be cut. When moving through the object to the cutting blade escape groove, the cutting blade pushes the object to be cut into the groove, causing slack in the object (that is, the waist of the object becomes weak during cutting). ), The cutting force of the cutting blade is not sufficiently concentrated on the cutting surface of the object to be cut, resulting in poor cutting sharpness, burrs on the cutting surface, and cutting scraps generated during cutting. Therefore, there is a demand for improving the cutting quality by narrowing the width of the cutting blade escape groove so that the looseness of the object to be cut does not occur.

Particularly, in the manufacture of the above cartridge,
Instead of the pile knitting or pile fabric, a raised fabric (a plain fabric woven by intersecting warp and weft yarns was scratched with a needle to pull out some fibers of the warp and / or weft to stand up. () Is used as the material for the Telemp ribbon, the weft thread easily protrudes from the cut surface of the Telemp ribbon and becomes uneven, and the standing fibers (hereinafter referred to as raised fibers) are not cut but pulled by the cutting blade. Is easily generated, and cutting waste (thread waste) is likely to be generated due to the occurrence of these burrs and fraying, which increases the dust level in the cutting process, or the cutting waste remains in the cartridge. There is a need to improve the cutting quality by narrowing the width of the cutting blade escape groove, as in the above, because problems such as adhesion to the film and the cause of image damage are likely to occur. The "fray" indicates that the fibers of the base cloth portion jump out, and the "boss" indicates that the fibers of the napped portion are entangled.

However, when the width of the cutting blade relief groove is narrowed, the cutting blade comes into contact with the mounting surface or the groove side surface of the cutting blade relief groove, so that the tip of the cutting edge arranged at the tip of the cutting blade. Is deteriorated, the sharpness is deteriorated, and the cutting quality is deteriorated.

The present invention has been made in view of the above circumstances, and makes it possible to reduce the width of the cutting blade escape groove without deteriorating the tip of the cutting blade, whereby a band-shaped object to be cut can be obtained. It is an object of the present invention to provide a belt-shaped material cutting method and device capable of improving the cutting quality when cutting the material.

[0009]

According to the method for cutting a band-shaped object of the present invention, a band-shaped object to be cut on the above-mentioned mounting surface of a cutting receiving portion having a mounting surface and a cutting blade relief groove opening to the mounting surface. Place an object,
In the band-shaped object cutting method of cutting the object to be cut by moving the knife-shaped cutting blade from the side opposite to the placing surface side of the object to be cut into the cutting blade escape groove through the object to be cut, A groove slope that is inclined in a direction in which the groove becomes narrower as the groove becomes deeper is provided in the opening of the cutting blade escape groove, and the slope angle of the blade tip tip slope corresponding to the groove slope that forms the tip of the cutting blade is The object to be cut is cut using the cutting blade having a larger inclination angle than the groove slope.

The band-shaped object cutting device of the present invention includes a cutting receiving portion having a knife-shaped cutting blade, a mounting surface on which a band-shaped object to be cut is mounted, and a cutting-blade escape groove opened on the mounting surface. , A cutting blade moving means for moving the cutting blade from the side opposite to the side of the mounting surface of the object to be cut placed on the mounting surface to the inside of the cutting blade escape groove through the object to be cut. In the band-shaped material cutting device provided with, the cutting blade escape groove is provided with a groove slope inclined in a direction in which the groove becomes narrower as the groove becomes deeper in the opening, and the tip of the cutting blade is formed. The slope angle of the blade tip tip slope corresponding to the groove slope is larger than the slope angle of the groove slope.

The hardness of the groove slope is preferably higher than the hardness of the cutting blade.

It is preferable that the groove slope is finished to Ra = 3 μm or less with an abrasive having a finer grain size than # 1000.

The band-shaped object to be cut means a flexible object made of a material such as resin, paper, metal or fiber. Specifically, for example, a cartridge tape teremp ribbon, a magnetic tape, It means photographic film, photographic paper, metal foil and the like.

Further, the blade tip end slope means a slope forming the tip end of the cutting blade.

Further, the inclination angle of the blade tip end inclined surface means the angle of inclination of the blade tip end inclined surface with respect to the moving surface on which the cutting blade is moved to the cutting blade escape groove through the object to be cut.

The inclination angle of the groove slope means the angle of inclination of the groove slope with respect to the moving surface on which the cutting blade is moved to the cutting blade escape groove through the object to be cut.

[0017]

According to the band-shaped material cutting method and apparatus of the present invention, the tip of the cutting blade has a groove slope inclined in the direction in which the groove becomes narrower as the groove becomes deeper in the opening of the cutting blade escape groove. The inclination angle of the blade tip tip slope corresponding to the groove slope forming the groove is set to be larger than the slope angle of the groove slope, so that the cutting blade is moved into the cutting blade escape groove to be cut on the mounting surface. Even when the cutting blade comes into contact with the groove slope when cutting an object, the tip of the cutting edge is moved into the cutting blade relief groove without contacting the groove slope, so the cutting edge of the cutting blade does not deteriorate. The width of the escape groove can be made narrower than in the past, and this prevents slack in the object to be cut that is pushed by the blade during cutting and moves the object to the cutting blade escape groove. ,
It is possible to sharply cut the object to be cut and improve the cutting quality.

If the slope of the groove is made to have a hardness higher than that of the cutting blade, or if it is finished to Ra = 3 μm or less with an abrasive having a finer grain size than # 1000, cutting at the time of cutting The wear of the cutting blade due to the contact of the blade with the groove slope can be reduced, and the life of the cutting blade can be extended.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing a thin plate connected body, and FIG. 2 is an enlarged view taken along line II-II in FIG.

As shown in the figure, the thin plate connecting body 1 is provided with a plurality of thin film bodies (body plates) 2 for forming a cartridge body part and two telescopic ribbons 3 and 4. Each thin plate 2 is a front-rear direction perpendicular to the left-right direction with both side ends (a gore-side end 2b and a straight-side end 2c described later) forming a film outlet 9 described later being positioned in the left-right direction. A plurality of thin telemeter ribbons 3 and 4 extending in the front-rear direction are continuously attached to the both side ends of each thin plate 2 over the plurality of thin plates 2.

The thin plate 2 has a flat central portion 2a, a goby-side end portion 2b which is diagonally raised from the central portion 2a and is bent in a dogleg shape at the tip portion, and a straight line which is diagonal from the central portion 2a. Straight side end 2c
It consists of and.

The above-mentioned teremp ribbons 3 and 4 are formed by using the above-mentioned raised fabric, and as shown in FIG. 3, a base cloth portion 5 made of a plain fabric woven by intersecting warp and weft yarns.
And a raised portion 6 formed by raising the warp and / or weft of the base cloth portion 5 by scratching the warp and / or weft with a needle or the like to pull out and cut a part of the fibers of the warp and / or weft, and the base cloth portion. And an adhesive layer 7 formed by applying an emulsion adhesive to the back surface of the adhesive layer 5. In this telempen ribbon, the adhesive layer 7 on the opposite side of the raised portion 6 is brought into contact with the goby-side end 2b and the straight-side end 2c of the plurality of thin plates, and is heated and pressed to be welded. It is attached to these thin plates.

The above-mentioned thin plate connected body 1 is carried to a cutting stage by a carrying means such as a bucket conveyor, and the telembling ribbons 3 and 4 are cut between the thin plates 2 adjacent to each other on the stage to separate each thin plate 2. By bending the flat central portion 2a of each of the separated thin plates 2 as shown in FIG. 2, a cylindrical cartridge body portion 8 is formed. Further, at that time, the gore side end 2b and the straight side end 2c of each thin plate are overlapped with each other and face each other, and a film outlet 9 (a film outlet of the cartridge body portion) 9 provided with the telemp ribbons 3 and 4 inside is formed. It is formed.

FIG. 4 is a side view showing an embodiment of a telemp ribbon cutting device which is a band cutting device according to the present invention, and FIG. 5 shows a relationship between a thin plate, a telemp ribbon, a receiving portion and a cutting blade in the above cutting device. FIG. 6 to FIG. 8 are enlarged bottom views showing the respective receiving portions.

As shown in FIG. 4, the telemp ribbon cutting device includes a goby-side cutting unit 10 for cutting the telemp ribbon 3 attached to the goby-side end 2b of the thin plate.
Telem ribbon 4 attached to the straight side end 2c
And a straight side cutting unit 40 for cutting. Both cutting units 10 and 40 are
As shown in FIG. 5, 4 is a front cutting position of the thin plate 2 (a center position of a gap between the thin plate 2 and the thin plate 2 adjacent to and in front of the thin plate 2) S1 and a rear cutting position (near the thin plate 2 and its rear side). Simultaneous cutting is performed at both of the center position (S2) of the gap between the thin plates 2 that are aligned with each other.

The goby-side cutting unit 10 and the straight-side cutting unit 40 have knife-shaped cutting blades 13 and 4, respectively.
2 and receiving surfaces 20, 25, 50 which are mounting surfaces on which the telemp ribbons 3, 4 which are strip-shaped objects are mounted, and cutting blade escape grooves 21, 26, 51 which are open to the receiving surfaces, respectively. The first receiving portion 11, the second receiving portion 12, the third receiving portion 41, which are the cutting receiving portions, and the cutting blades 13 and 42 are the cutting blade relief grooves 2
1, a cutting blade moving means 55 for moving the cutting blade moving means 55 into the inside of the receiving blades 20, 25 and 50, and mounting the cutting blades 3 and 4 on the receiving surfaces 20, 25 and 50. From the side opposite to the receiving surface side, it is moved to the inside of the cutting blade escape grooves 21, 26, 51 through the telemeter ribbon, and the telemeter ribbons 3, 4 are cut. The cutting blade moving means 55 includes the shafts 18, 46, the cutting blade holders 19, 47 rotatable about these shafts, and the cutting blade holder 1
It is configured by a known drive means (not shown) for rotating and driving 9, 47.

The goby-side cutting unit 10 includes a first receiving portion 11 and two second receiving portions 12 for pressing the telem ribbon 3 from the surface side thereof, that is, from the raised portion 6 side, and the first receiving portion 11.
Also, two cutting blades 13 are provided for moving the telemp ribbon 3 from the back surface side to the front surface side and cutting the telemp ribbon 3 in a state where the telemp ribbon 3 is pressed by the second receiving portion 12. The telemp ribbon 3 is bent in a dogleg shape along the goby-side end 2b of the thin plate, and the inner part of the bent part is pressed by the first receiving part 11, and the outer part is pressed by the second receiving part 12. .

The first receiving portion 11 is removably attached to a receiving portion holder 16 which is attached to the base portion 14 so as to be rotatable around a shaft 15, and the second receiving portion 12 is attached to the receiving portion holder 16 with an axis. The cutting blade 13 is attached so as to be rotatable about 17 as a center and detachable, and the cutting blade 13 is detachably attached to the base 14 for a cutting blade holder 19 which is rotatable about a shaft 18.

FIG. 6 is a detailed view of the first receiving portion 11, and FIG.
6A is a front view (viewed from the right in FIG. 4), FIG. 6 (b) is a left side view, FIG. 6 (c) is an arrow A view in FIG. 6 (b), and FIG.
(D) is a G1-G1 sectional view showing the relationship between the slope angle of the groove slope and the slope angle of the blade tip slope. As shown,
The first receiving portion 11 includes a receiving surface 20 facing the folded inner portion of the goby-side telemp ribbon 3, and the receiving surface 20.
And two cutting blade flanks 21 that are open to the receiving surface 20 at a cutting interval (distance between the front cutting position S1 and the rear cutting position S2) Ls, and the receiving surface 20 of the cutting blade flank groove 21. Is a relief recess 2 having a width in the front-rear direction larger than that of the cutting blade relief groove 21 formed by communicating with the opposite side.
3 and 3. As shown in FIG. 6 (d), each of the cutting blade relief grooves 21 has a groove slope 22 inclined in a direction in which the groove becomes narrower as the groove becomes deeper in the opening of the receiving surface 20,
22 'are provided on both sides of the groove, and the blade tip tip slopes J, J'corresponding to the groove slopes 22, 22' forming the tip of the cutting blade 13.
The inclination angles δ and δ ′ of the groove are larger than the inclination angles α and α (δ> α, δ ′> α ′) of the groove slopes 22 and 22 ′.
In addition, the inclination angles δ and δ ′ of the tip edge slopes J and J ′ and the inclination angles α and α ′ of the groove slopes 22 and 22 ′ are the moving surface F through which the cutting blade is moved through the object to the cutting blade escape groove.
It is the angle of each slope with respect to (α).

FIG. 7 is a detailed view of the second receiving portion 12, and FIG.
7A is a front view (view from the left in FIG. 4), FIG. 7B is a right side view, FIG. 7C is a plan view of FIG. 7B, and FIG.
7D is a view as viewed from the direction of the arrow in FIG. 7B, and FIG. 7E shows the relationship between the inclination angle of the groove slope and the inclination angle of the cutting edge tip slope.
-G2 sectional view. The two second receiving portions 12 are attached to the receiving portion holder 16 so as to face each of the two cutting blade relief grooves 21 of the first receiving portion 11, and each second receiving portion 12 is provided with a telescope. The receiving surface 25 facing the bent outer portion of the ribbon 3, the cutting blade relief groove 26 opened in the receiving surface 25, and the side of the cutting blade relief groove 26 opposite to the receiving surface 25. An escape recess 28 having a width in the front-rear direction larger than that of the cutting blade escape groove 26 formed by being connected is provided. Reference numeral 29 is an insertion hole for the shaft 17. As shown in FIG. 7 (d), each of the cutting blade relief grooves 26 has groove slopes 27, 27 'inclined in the opening of the receiving surface 25 in such a direction that the groove becomes narrower as the groove becomes deeper. Groove slope 2 that is provided on both sides of the groove and forms the tip of the cutting blade 13.
The inclination angles δ, δ ′ of the blade tip tip slopes J, J ′ corresponding to 7, 27 ′ correspond to the inclination angles β, β ′ of the groove slopes 27, 27 ′.
It is larger than (δ> β, δ ′> β ′). In addition,
The inclination angles β and β'of the groove slopes 27 and 27 'are the moving surfaces F through which the cutting blade is moved through the object to the cutting blade escape groove.
It is the angle of each groove slope with respect to (β).

The receiving surfaces 20 of the first receiving portion and the second receiving portion,
25, as shown in FIG.
Has a size facing substantially the entire width direction (the above-mentioned left-right direction) of the bent inner part and the outer part, and the cutting-blade relief grooves 21, 26 are in the width direction of the receiving surfaces 20, 25 (the left-right direction). The groove slopes 27, 27 'are provided so as to penetrate through the entire length, and the groove slopes 27, 27' are provided on both sides (both sides in the front-rear direction) of the grooves of the cutting blade relief grooves 21, 26. It is formed almost all over the width direction of the outer portion.

The two second receiving portions 12 are attached such that the positions of the cutting blade relief grooves 26 match the positions of the cutting blade relief grooves 21 of the first receiving portion, and the cutting blade 13 also has the same position as described above. It is attached so as to match the position of the cutting blade relief groove 21 of the first receiving portion.

Next, the straight side cutting unit 40 will be described. The straight-side cutting unit 40 includes a third receiving portion 41 that presses the telemp ribbon 4 attached along the straight-side end portion 2c of the thin plate from the front surface side thereof, that is, the raised portion 6 side, and the third receiving portion 41. Two cutting blades 42 that move the cutting tape 4 from the back side to the cutting side while pressing the receiving ribbon 41 with the receiving ribbon 41.
It has and.

The third receiving portion 41 is detachably attached to a receiving portion holder 45 which is attached to the base portion 43 so as to be rotatable around a shaft 44, and the cutting blade 42 is attached to the base portion 43 about a shaft 46. It is removably attached to the cutting blade holder 47 that is rotatably attached.

FIG. 8 is a detailed view of the third receiving portion 41.
8A is a front view (view from the left in FIG. 4), FIG. 8B is a right side view, FIG. 8C is an arrow A view in FIG. 8B, and FIG.
(D) is a G3-G3 sectional view showing the relationship between the inclination angle of the groove slope and the inclination angle of the blade tip tip slope. As shown,
The third receiving portion 41 has a receiving surface 50 facing the telemp ribbon 4.
And two cutting blade clearance grooves 51 opened in the receiving surface 50 by a cutting interval (a distance between the front cutting position S1 and the rear cutting position S2) Ls, and the receiving surface of the cutting blade clearance groove 51. A relief recess 53 having a width in the front-rear direction larger than that of the cutting blade relief groove 51 formed in communication with the side opposite to 50 is provided. As shown in FIG. 8 (d), each of the cutting blade relief grooves 51 has a groove slope 52 inclined in a direction in which the groove becomes narrower as the groove becomes deeper in the opening of the receiving surface 50,
52 'is provided on both sides of the groove, and the blade tip tip slopes K, K'corresponding to the groove slopes 52, 52' forming the tip of the cutting blade 42.
Of the groove slopes 52, 52 'are larger than the inclination angles γ, γ'(δ> γ, δ '>γ'). The inclination angles γ and γ ′ of the groove slopes 52 and 52 ′ are
It is the angle of each groove slope with respect to the moving surface F (γ) through which the cutting blade is moved to the cutting blade escape groove through the object to be cut.

The receiving surface 50 of the third receiving portion 41 is, as shown in FIG. 4, the width direction (the above-mentioned left-right direction) of the telemp ribbon 4.
The cutting blade relief groove 5 has a size facing almost the entire area.
1 is provided so as to penetrate through the entire length of the receiving surface 50 in the width direction (the above-mentioned left-right direction), and the groove slopes 52, 52 'are provided on both sides of the respective cutting-blade escape grooves 51 (both sides in the front-back direction). 4 is formed almost in the entire width direction.

The two cutting blades 42 are arranged such that their positions match the positions of the cutting blade escape grooves 51 of the receiving portion.

As shown in FIG. 5, each thin plate 2 is
Is the outermost first notch 2d and the inner second notch 2e for both the straight side end 2b and the goby side end 2c.
Are formed in a staircase shape and are adjacent to each other in the front-rear direction.
The gap L1 (L1
= 6.6 mm), the gap L2 (L2 of the second notch 2e portion)
= 1.4 mm).

Further, the groove slopes 22, 22 ', 27, 2
7 ', 52, 52' are finished to Ra = 3 μm or less with an abrasive having a finer grain size than # 1000. The hardness is HRC60 or more and the hardness of the cutting blades 13, 42 (H
It is higher than RC≈58).

Next, the cutting of the telemp ribbons 3 and 4 by the cutting units 10 and 40 will be described. The cutting units 10 and 40 are arranged on the cutting stage, and in the stage, the second receiving portion 12 of the goby-side cutting unit is rotated counterclockwise from the state shown in FIG. Direction by a predetermined amount,
The receiving portion 11 together with the receiving portion holder 16 is rotated clockwise by a predetermined amount around the shaft 15 by a known driving means (not shown), and the third receiving portion 41 of the straight side cutting unit is rotated by the shaft 44.
By rotating the receiving portion holder 45 together with the receiving portion holder 45 by a predetermined amount in the counterclockwise direction by a known driving means (not shown),
Further, by placing the cutting blades 13, 42 at the positions shown in the drawing, the respective receiving portions 11, 12, 41 and the cutting blades 13,
42 is placed in a retracted position that does not interfere with the thin plate connected body 1 when the thin plate connected body 1 moves to the cutting stage (the thin plate connected body 1 moves in the direction perpendicular to the paper surface in FIG. 4). .

Next, when the thin plate connected body 1 moves to the cutting stage, the first receiving portion 1 in the goby-side cutting unit.
1 together with the receiving part holder 16 is rotated counterclockwise about the shaft 15 and the second receiving part 12 is rotated clockwise about the shaft 17, and the third receiving part 41 in the straight side cutting unit. The receiving part holder 45 together with the shaft 44
As shown in FIG. 4, the receiving portions 11, 12, 41 are made to face the raised portions 6 side of the telemp ribbons 3, 4 by rotating the receiving portion 11, 12 and 41 in a clockwise direction, and the receiving surface is raised. 6 and presses the raised portion 6 toward the back side, and in this state, the cutting blade holder 19 on which the cutting blade 13 is arranged is moved by the cutting blade moving means.
4, the cutting blade holder 47, in which the cutting blade 42 is arranged, is rotated counterclockwise about the shaft 46 to pass through the cutting blade relief grooves 21, 26, 51 of each receiving portion 2 in FIG. By moving to the position shown by the dotted chain line, both the telemp ribbons 3 and 4 are cut at the cutting positions S1 and S2.

Here, the dimensional relationship of the cutting blade and the cutting blade relief groove will be described in detail.

First of all, the relationship that "the inclination angle of the blade tip slope corresponding to the groove slope forming the tip of the cutting blade is greater than the inclination angle of the groove slope" is the relationship between the blade tip slope of the cutting blade and the cutting blade. Description will be made regarding a case where both sides of the groove slope of the clearance groove are satisfied.

As shown in the conceptual diagram of the first embodiment of FIG. 9, when the cutting blade 60, which is a moving surface on which the cutting blade is moved to the cutting blade escape groove through the object to be cut, is rotated, the cutting edge tip P is moved. The reference plane of the trajectory drawn by (the reference plane where the deflection error is ± 0) is defined as the deflection error reference plane F, and the thickness T1 of the cutting blade 60,
The blade tip tip inclination angles θ1 and θ1 ′ are the inclination angles of the blade tip tip slopes 61 and 61 ′ on both sides of the cutting blade 60 with respect to the deflection error reference plane F, respectively. At this time, the groove slope opening width V1 that is the width in the front-rear direction of the groove slope opening where the width of the cutting blade escape groove 62 is the widest, and the groove slope narrowest mouth where the width of the cutting blade escape groove 62 is the narrowest Of the groove slope narrowest mouth width W1 that is the width in the front-back direction of
The groove slope inclination angles ω1 and ω1 ′, which are the inclination angles of the groove slopes 63 and 63 ′ with respect to the shake error reference plane F, can be determined as follows.

That is, the runout of the cutting edge tip P1 of the cutting blade 60 is within the range of the deviation error ± E1 from the runout error reference plane F, and the cutting edge tip P1 contacts the receiving surface 64 of the cutting edge clearance groove 62. In order to move the cutting blade 60 into the cutting blade escape groove 62 so as not to move, the width of the groove inclined surface opening of the cutting blade escape groove 62 is set to a range apart from the deviation error reference plane F by ± E1 or more. Two-sided runout error 2 x E1
Along with making it larger (V1> 2 × E1), the cutting edge tip P
1 so as not to come into contact with the groove slopes 63, 63 ', such that the blade tip tip inclination angles θ1, θ1' are larger than the groove slope inclination angles ω1, ω1 '(ω1 <θ1 and ω1'<θ1'), respectively. The slope angle of the slope is determined, and the width W1 of the slope narrowest mouth of the groove slope of the cutter escape groove 62 is set to be smaller than the thickness T1 of the cutter blade 60 so that the cutter blade 60 can pass through the inside of the cutter escape groove 62. It may be determined to be large (W1> T1).

When the cutting blade 60 is moved into the groove of the cutting blade escape groove 62 formed in the above-described size, the groove slope 6 as shown in FIG.
3 ′ may come into contact with the beveled tip sloped surface 61 ′ (see cutting blade 60A in FIG. 10), or the beveled tip 63 side of the cutting blade 60 may come into contact with the grooved slant surface 63 side (see cutting blade 60B in FIG. 10). Even if the cutting edge tip P1 of the cutting blade is 62
Groove side surfaces (groove inclined surfaces 63, 63 'and parallel groove surfaces 69, 6)
There is no contact with 9 '). Then, the cutting blade can be moved to the parallel groove surfaces 69, 69 'through the groove slope and the groove slope narrowest port (see the cutting blades 60C and 60D in FIG. 10).

On the other hand, as shown in FIG.
In the conventional method in which 0 is moved so as not to touch the parallel groove surfaces 79 and 79 ′ of the cutting blade escape groove 70, the groove slope narrowest mouth width W 2 is set to the thickness T 1 of the cutting blade 60 and the two-sided runout error 2 × E.
Greater than the sum of 1 and (2 × E1 + T1) (W2> (2 ×
E1 + T1)) is required. Therefore, the first
Compared with the groove slope narrowest mouth width W1 of the embodiment (in the first embodiment, the groove slope narrowest mouth width W1 is determined by W1> T1), the groove slope narrowest mouth width W2 is swung on both sides of the cutting blade. Greater than the error (2 × E1) ((W2-W1) ≧ 2 × E1)
There is a need to.

Specifically, in the first embodiment,
The thickness T1 of the cutting blade 60 is 0.25 mm, the angle of inclination of the tip of the cutting edge is θ1 = θ1 ′ = 15 °, and the deflection error E1 of the cutting blade 60 is E1 =.
If it is ± 0.3 mm, the groove slope opening width V1> 2E1 =
0.6 mm, groove slope inclination angle ω1 <θ1 = 15 °, ω
1 '<θ1' = 15 °, groove slope narrowest mouth width W1> T1 =
0.25 mm, for example, groove slope opening width V1 = 0.7
mm, the slope angle of the groove ω1 = ω1 ′ = 12 °, and the narrowest width of the groove slope W1 = 0.4 mm.

On the other hand, in the conventional method, the thickness T1 of the cutting blade is T1 = 0.25 m as in the case of the first embodiment.
m, blade tip inclination angle θ1 = θ1 ′ = 15 °, and cutting blade runout error E1 = ± 0.3 mm, groove slope narrowest mouth width W2> 0.85 mm (0.85 = 2 × 0.3 + 0. Two
5), and the minimum dimension of the groove slope narrowest mouth width W2 is the above first
It is necessary to increase by 0.6 mm as compared with the case where the groove slope has the narrowest opening width W1 (W1> 0.25) of the embodiment.

As described above, according to the first embodiment, the width of the groove slope narrowest port of the cutting blade escape groove can be made narrower than that of the conventional one, which enables sharp cutting of the object to be cut. It is possible to improve the cutting quality at the time of cutting the teremp ribbon. That is, as shown in FIG. 12, the front end of the telem ribbon 4 is placed on the receiving surface 95 such that the surface side of the telem ribbon 4, that is, the raised portion 6 side faces the receiving surface 95, and the cutting blade 97 is attached to the receiving surface 95. When the telemeter ribbon 4 is cut by moving it from the side opposite to the receiving surface 95 side through the telemeter ribbon 4 to the inside of the cutting blade escape groove 98, the groove slope surface opening width V9 of the cutting blade escape groove 98 and the groove slope surface narrowest. When the mouth width W9 is large, the cutting blade 97 pushes the cutting tape 97 when the cutting tape is cut, and the cutting tape 97 moves into the cutting blade escape groove, so that the cutting tape 4 is loosened. As shown in FIG. 13, when the dimensions of the groove slope opening width V9 'and the groove slope narrowest mouth width W9' of the cutting blade escape groove 98 'are small, Is loosened suppressed Bonn 4, it is possible to improve the cutting quality enables sharp cutting of plush ribbons.

The shape of the cutting edge of the cutting blade is not limited to those having equal cutting edge tip inclination angles θ = θ 'on both sides, and for example, as shown in FIG. It may have an angle θ3 <θ3 ′. In this case as well as above,
The size of the cutting blade relief groove 76 is the tip P3 of the cutting edge of the cutting blade 75.
Even if the edge is swung, the groove slope opening width V3 of the cutting blade clearance groove 76 is set so that the tip end P3 does not come into contact with the receiving surface 77. Error larger than 2 × E3 (W3> 2 × E
3), the groove slope inclination angles ω3 and ω3 ′ are set to be larger than the blade tip inclination angles θ3 and θ3 ′ so that the blade tip P3 does not contact the groove slopes 78 and 78 ′ (ω3 <
θ3 and ω3 ′ <θ3 ′), and the cutting blade relief groove 7 so that the cutting blade 75 can move between the parallel groove surfaces 79, 79 ′.
The narrowest width W3 of the groove slope of No. 6 can be set to be larger than the thickness T3 of the cutting blade 75 (W3> T3).

Further, as shown in FIG. 15, the shape of the cutting edge of the cutting edge is such that, in addition to the beveled tip slopes 80, 80 ', the beveled tip slopes are formed on the surface of the beveled tip slope opposite to the blade tip P4. It may have a blade edge rear slope 81, 81 'having an inclination angle different from that of 80, 80'. In this case as well, the groove slope inclination angles are set so that the blade tip tip inclination angles θ4 and θ4 ′ are larger than the groove slope inclination angles ω4 and ω4 ′ of the cutting blade relief groove 82 (ω4 <θ4 and ω4 ′ <θ4 ′), respectively. If determined, the inclination angle φ4 of the rear slope of the cutting edge,
The size of φ4 'can be set to an arbitrary size regardless of the groove slope inclination angle and the blade tip inclination angle, and the inclination angle of the blade rear slope can be smaller or larger than the blade tip inclination angle. The angles may be equal to each other. For example, the tip tip inclination angles θ4 and θ4 ′ are both 1
The angle of inclination of the rear slope of the cutting edge is set to 5 ° and both φ4 and φ4 'are set to 1
It can be 3 °.

Second Embodiment Next, the relationship that "the inclination angle of the blade tip slope corresponding to the groove slope forming the tip of the cutting blade is greater than the inclination angle of the groove slope" is the blade tip of the cutting blade. A case will be described in which only one side of the slope and the groove slope of the cutting blade clearance groove is satisfied. That is, a case will be described in which only the blade tip tip inclination angle of the blade tip tip slope corresponding to the groove slope on one side of the cutting blade escape groove is larger than the groove slope inclination angle of the one side groove slope.

As shown in the conceptual diagram of the second embodiment of FIG. 16, the thickness T5 of the cutting blade 85 and the inclination angles θ of the blade tips of the blade tip slopes 86 and 86 'on both sides of the cutting blade 85 are respectively.
5, θ5 ′, a deflection error of the cutting blade 85 when the cutting blade 85 is rotated by the cutting blade moving means ± E5, and a reference plane (vibration of the trajectory drawn by the tip P5 of the cutting edge when the cutting blade 85 rotates). A reference plane having an error of ± 0) is defined as a shake error reference plane F. In the second embodiment, the groove slope inclination angle ω5 <the cutting edge tip inclination angle θ5, the groove slope inclination angle ω5 ′.
> The precondition is that the blade tip tip inclination angle is θ5 ′. At this time, the dimensions of the cutting blade escape groove 87 (groove slope opening width V5, groove slope narrowest mouth width W5, and groove slope inclination angles ω5, ω5 ') can be determined as follows.

The runout of the tip P5 of the cutting blade 85 is within a range of runout error ± E5 from the runout error reference plane F, and on the right side (R side) of the cutting blade escape groove 87 in the figure, the groove slope inclination angle is set. ω5 ′> blade tip inclination angle θ5 ′, so that the tip P5 of the cutting blade 85 does not come into contact with the groove slope 89 ′, the parallel groove surface is separated from the error reference plane G by the one-side runout error E5. 90 'is arranged and groove slope 89'
The groove slope width C in the width direction of the cutting blade clearance groove along the inclination angle ω5 ′ and the receiving surface 88 can be formed to any dimension. On the other hand, on the left side (L side) in the drawing of the cutting blade escape groove 87, the groove slope inclination angle ω5 ′ <the cutting edge tip inclination angle θ
Since it is 5 ', the blade tip tip slope 86 of the cutting blade 85
May contact the groove slope 89, and the tip P5 of the cutting edge may receive the receiving surface 8
So that it does not hit 8
The groove slope 89 is arranged so that the groove slope opening on the L side is arranged at a position apart from 5, and the parallel groove surface 90 is separated from the parallel groove surface 90 'so that the cutting blade 85 can move in the groove. The cutting blade 85 is arranged at a position apart from the thickness T5. Therefore, the dimension of the groove slope opening width V5 of the cutting blade escape groove 87 is V
5> (2 x E5 + groove slope width C) and groove slope narrowest mouth width W
The dimension of 5 is set so that W5> T5.

As described above, in the case of the second embodiment, the method of determining the dimensions of the cutting blade escape groove is different between the R side (right side in the drawing) and the L side (left side in the drawing), but the cutting blade is The narrowest width of the groove slope can be set narrower than in the conventional case where the cutting blade is moved into the cutting groove escape groove so as not to contact the parallel groove surfaces on both sides.

Further, as shown in FIG. 17, a cutting blade 91
However, only the L side (left side in the figure) of the cutting blade 9
Even if it has two, the cutting blade tip slope 92 and the groove slope 94 of the cutting blade escape groove 93 corresponding to the cutting blade tip slope 92 correspond to the above-mentioned "groove slope forming the tip of the cutting blade". Slope angle of the blade tip tip slope is larger than the slope angle of the groove slope ”, even if the other side R side (right side in the figure) does not satisfy the above relationship, the cutting edge escape groove 93 The dimensions can be determined by the same method as in the second embodiment, and similarly to the above, the groove slope opening width V6 and the groove slope narrowest opening width W6 can be set narrower than in the conventional case.

The groove slopes 22, 22 ', 27, 2
7 ', 52, 52' are necessarily finished to Ra = 3 μm or less with an abrasive having a finer particle size than # 1000.
It is not necessary to set the hardness to HRC60 or higher to be higher than the hardness (HRC≈58) of the cutting blades 13 and 42, and the inclination angle of the cutting edge of the cutting blade is not dependent on the finish of the groove slope or the hardness of the groove slope. It is possible to obtain an effect of improving the cutting quality by setting the angle of inclination of the groove slope corresponding to the blade tip slope to be larger than that of the conventional case and narrowing the groove slope opening width and the groove slope narrowest mouth width.

In the above embodiment, FIG. 6, FIG. 7 and FIG.
As shown in, the width in the front-rear direction is larger than the width of the groove formed by the parallel groove surfaces of the cutting blade clearance grooves communicating with the receiving surface of each of the cutting blade clearance grooves 21, 26, 51. The relief recesses 23, 28, 53 are formed in the receiving portion, whereby cutting waste is easily pushed out from the gap between the side surface of the cutting blade escape groove and the side surface of the cutting blade into the escape recessed portion, Even if the clearance between the side surface of the escape groove and the side surface of the cutting blade is reduced to improve the sharpness, it is possible to reduce the possibility that the cutting waste will be clogged in the clearance.

Further, on the receiving surface of the receiving portion facing the surface of the telemp ribbon, there is formed a projection located on a side portion of the cutting blade clearance groove and protruding from the receiving surface. The cutting blade may be moved while pressing the front surface of the tape toward the back surface to cut the telemp ribbon. By forming such a protrusion, it is possible to press the vicinity of the cut portion of the telem ribbon with a higher pressure (the pressing force can be concentrated on the protrusion to press the vicinity of the cut portion of the telem ribbon). As a result, Sharp cutting is possible, and it is possible to suppress the occurrence of cutting scraps by reducing burrs and fraying.

Further, in the above-described embodiment, the telem ribbon using the woven fabric is the object to be cut, but of course, the present invention is also effective when cutting the telem ribbon made of other materials.

[Brief description of drawings]

FIG. 1 is a plan view of a thin plate connected body in which a telemp ribbon is continuously attached to a plurality of thin plates.

FIG. 2 is an enlarged sectional view taken along the line II-II in FIG.

FIG. 3 is a schematic cross-sectional view of a telemp ribbon.

FIG. 4 is a side view of the telemp ribbon cutting device.

FIG. 5 is a plan view showing the relationship between the thin plate, the telemp ribbon, the receiving portion, the cutting blade, and the like.

FIG. 6 is a view showing a first receiving portion of the goby-side cutting unit.

FIG. 7 is a diagram showing a second receiving portion of the goby-side cutting unit.

FIG. 8 is a view showing a receiving portion of the straight side cutting unit.

FIG. 9 is a conceptual diagram showing a dimensional relationship of a cutting blade, a cutting blade clearance groove, and the like according to the first embodiment.

FIG. 10 is a view showing a state where the cutting blade is moved into the cutting groove clearance groove.

FIG. 11 is a conceptual diagram showing a dimensional relationship between a conventional cutting blade, a cutting blade clearance groove, and the like.

FIG. 12 is a view showing a state in which the width of the relief groove of the cutting blade is increased to cut the telemp ribbon.

FIG. 13 is a view showing a state in which the width of the relief groove of the cutting blade is reduced to cut the telemp ribbon.

FIG. 14 is a conceptual diagram showing dimensions of a cutting blade clearance groove when cutting blades having different blade tip tip inclination angles on both sides are used.

FIG. 15 is a diagram showing a cutting blade having a beveled tip slope and a beveled rear bevel.

FIG. 16 is a view showing a case where one side of the blade tip tip inclination angle is larger than the corresponding groove slope inclination angle.

FIG. 17 is a view showing a cutting blade having a beveled tip edge only on one side.

[Explanation of symbols]

1 Thin plate connection 2 thin plates 2b Goby side end 2c Straight side end 3, 4 Telemp ribbon 8 Patrone 9 Film outlet 10 Goby side cutting unit 11 First receiver 12 Second receiving part 13 cutting blade 20, 25 Receiving surface 21, 26 Cutting blade relief groove 22, 27 protrusion 23, 28 escape recess 40 Straight side cutting unit 41 Third receiving part 42 cutting blade 50 Receiving surface 51 Cutting blade relief groove 52 protrusions 53 relief recess 55 Cutting blade moving means

Continued front page    (72) Inventor ▲ Taka ▼ Haruo Hashi             Fuji Photo, 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture             Within Film Co., Ltd. F-term (reference) 3C027 JJ04

Claims (4)

[Claims] 1. A cutting receiving part having a mounting surface and a cutting blade relief groove opening to the mounting surface, wherein a strip-shaped object is mounted on the mounting surface, and a knife-shaped cutting blade is provided. In the strip cutting method for cutting the cutting object by moving the cutting object from the side opposite to the side of the placing surface to the inside of the cutting blade clearance groove through the cutting object, the opening of the cutting blade clearance groove A groove slope inclined in a direction in which the groove becomes narrower as the groove becomes deeper, and the slope angle of the cutting edge tip slope corresponding to the groove slope forming the tip of the cutting blade is the slope angle of the groove slope. A method for cutting a strip, which comprises cutting the object to be cut using a larger cutting blade. 2. A cutting receiving part having a knife-shaped cutting blade, a mounting surface for mounting a strip-shaped object to be cut, and a cutting-blade escape groove opening on the mounting surface, and the cutting blade. A belt-shaped material cutting device provided with a cutting blade moving means for moving the cutting object placed on the mounting surface from the side opposite to the mounting surface side through the cutting object into the cutting blade escape groove. In the above, the cutting blade escape groove is provided with a groove slope inclined in a direction in which the groove becomes narrower as the groove becomes deeper in the opening,
A belt-shaped material cutting device, wherein an inclination angle of a blade tip tip slope corresponding to the groove slope forming the tip of the cutting blade is larger than an inclination angle of the groove slope. 3. The band cutting device according to claim 2, wherein the hardness of the groove slope is higher than the hardness of the cutting blade. 4. The belt cutting device according to claim 2, wherein the sloped surface of the groove is finished to have Ra = 3 μm or less with an abrasive having a fine grain size.