JP7451051B2 - Slitter device for hollowing out - Google Patents

Description

The present invention relates to a slitter device for cutting a strip-shaped member to be cut into a plurality of narrow strips along its length. Examples of materials to be cut include plastic films, metal foils, paper, cloth, and composite materials thereof, which are used in a wide range of fields such as electronics, automobiles, energy, medical, and food packaging. The present invention relates to a slitter device for cutting a cut material while maintaining the cut width dimension and the quality of the cut end with high precision.

As a slitter device for hollowing out, for example, as shown in FIG. 5 of Patent Document 1, a spacer is attached to the second rotating shaft 2. A pair of lower blades (thick blades) 55 are mounted on both sides of the blade (showing the wording) 6, and the pair of lower blades (thick blades) 55 are mounted on the first rotating shaft 1 with a slight inclination like a disc spring. The upper blade (thin blade) 56 is inserted into the narrow portion L2 with the circumferential side surfaces 10 of the upper blade (thin blade) 56 facing outward and in contact with a pair of lower blades (thick blade) 55. Then, the total length L3 of the length L1 of the wide part and the blade thickness of the two lower blades (thick blades) 55, 55 corresponds to the cutting width of the product, such as a metal foil sheet, and is located in the narrow part L2. The sheet-like material is disposed of as hollow waste.

In this case, as shown in FIG. 7(a) of this specification, the cut member cut by the total length L3 has a vertical plane 101 that is symmetrical in cross section with no sagging surface on both sides, and a vertical plane 102 and is used as the product 31 because it can maintain the quality of the cut end. On the other hand, the hollowed waste cut at the narrow portion L2 is removed by the cutting surface (slanted surface, described as "crossing" in Patent Document 1) of the upper blade (thin blade) 56 shown in FIG. 5 of Patent Document 1 (see FIG. 7 of this specification). As shown in b), sagging surfaces 103 and 104 are formed on both cut surfaces and are discarded as hollow waste 32. In other words, the slitter device shown in FIG. 5 of Patent Document 1 is a slitter device for hollowing out, which is used when a product that can maintain the cutting width dimension and the quality of the cut end with high precision is required.

By the way, in a slitter device for hollow cutting, the waste of the strip-shaped member to be cut is minimized by narrowing the hollow width and reducing the hollow waste as much as possible. In addition, a problem that arises in this case is that the hollowed out scraps are caught between the lower blades and become tangled. As a means to solve this problem, Document 2 discloses a slitter device for hollowing out flat printing plates having a thickness of about 0.1 mm to 0.5 mm. This is an abacus-shaped hollow holder 48 between the lower blade (lower blade for hollow cutting: the wording below, the words in parentheses indicate the wording described in Patent Document 2 up to the effect of the invention in paragraph 0013) 36. By arranging and bending the hollowed out scraps (hollowed scraps) 12B, a gap is created between the hollowed scraps (hollowed scraps) 12B and the lower blade (hollowed lower blade) 36. This prevents the punching waste (mid-cutting scraps) 12B from being caught between the lower blades (lower cutting blade) 36.

Japanese Patent Application Publication No. 8-318494 Japanese Patent Application Publication No. 2000-108536

However, in the case of Patent Document 2, when cutting the member to be cut (web) 12 into a plurality of narrow strips, a plurality of hollow holders 48 in the shape of an abacus bead are required. In addition, in order to support and bend the hollow waste (hollow waste) 12B with the abacus bead-shaped hollow holder 48, the hollow waste (hollow waste) 12B is bitten into the abacus bead-shaped hollow holder 48. You must do so. To do this, it is necessary to make the upper blade (hollowing upper blade) 52 deeply bite into the conveyance line of the material to be cut (web) 12 to increase the amount of overlap with the lower blade (hollowing lower blade) 36. be. However, in this case, exceeding a predetermined amount of overlap may adversely affect the life of the cutting edge and the cut surface of the product.

In addition, the spacer provided between the upper blade (hollowing upper blade) 52 or the spacer provided between the upper blades (hollowing upper blade) 52 is V-shaped to match the abacus bead-shaped hollowing holder 48. The structure becomes complicated because it is necessary to shape the hollow waste (hollow waste) 12B and bend it to plastically deform it.

In addition, in the case of a thick member to be cut (web) 12, the load for bending the hollow scraps (hollow scraps) 12B into a V-shape becomes large, so it is necessary to increase the capacity of the drive motor. In addition, in the case of a thick member to be cut (web) 12, if the width of the hollow scraps (hollow scraps) 12B is narrowed, it becomes difficult to bend the hollow scraps (hollow scraps) 12B into a V-shape.

Further, when cutting into a plurality of narrow strips, a plurality of hollowed wastes (hollowed waste) 12B are discharged in a bent state, so they are stored in a bulky manner, and post-processing may be time-consuming. In addition, it is effective for aluminum foil that easily deforms plastically, but plastics that are difficult to deform plastically return to their flat shape when they are cut and removed from the abacus bead-shaped hollow holder 48, leaving hollow waste ( It is conceivable that the hollow cutting waste) 12B may get caught between the lower blades (lower hollow cutting blades) 36, and it can be said that this method is not suitable for plastics that are difficult to plastically deform.

The present invention was made in view of the drawbacks of the conventional slitter device for hollow cutting as described above, and is suitable for cutting materials other than aluminum foil that are difficult to plastically deform (webs) and thick materials to be cut (webs). ), it has a simpler structure that does not adversely affect the cut surface of the product, and the width of the hollow waste can be reduced to reduce waste. To provide a slitter device for hollowing out which does not cause hollowing waste to be caught and tangled between lower blades even if the width of the waste is reduced.

In order to solve the above-mentioned problems, the present invention provides a hollow slitter that cuts a strip-shaped member to be cut along its length and discharges at least two or more products and at least one hollow waste. In the apparatus, a first rotation axis, a second rotation axis, and a third rotation axis are provided in parallel, and the first rotation axis is provided with at least one or more first upper blades, The second rotating shaft is provided with at least one second upper blade, and the first upper blade and the second upper blade are configured to cut one of the hollow scraps to be cut. The first upper blade is arranged back and forth in the cutting direction, with a surface facing the cutting surface of the first upper blade, and the other cut surface of the hollowed scrap to be cut facing the cutting surface of the second upper blade. The rotating shaft of No. 3 has a first lower blade whose cutting edge faces and overlaps the cutting edge of the first upper blade, and a cutting edge which faces and overlaps the cutting edge of the second upper blade. a second lower blade, the first lower blade and the second lower blade are arranged with their cutting edges facing each other and with an interval equal to the cutting width of the hollow scrap in the axial direction. A slitter device for hollow cutting is characterized in that the slitter device is characterized in that

By arranging the first upper blade and the second upper blade back and forth in the cutting direction to shift the cutting timing of the left and right cutting surfaces of the hollow waste, the hollow waste is distributed between the lower blades. Moreover, even if the workpiece to be cut has a thickness of 0.5 mm or more, it can be cut without any problem.

According to the present invention, even when cutting a material to be cut (web) that is difficult to plastically deform other than aluminum foil or a thick material to be cut (web), the structure is simpler and the cut surface of the product can be easily cut. It is possible to reduce waste by reducing the width of the hollow scraps without causing any negative effects, and even if the width of the hollow scraps is made small, there is no possibility that the hollow scraps will get caught between the lower blades and get tangled. It is possible to provide a slitter device for hollow punching.

FIG. 1 is a front view for explaining a slitter device for hollow cutting according to the present invention. 1 is a side view (view taken along the line AA in FIG. 1) for explaining a slitter device for hollowing out according to the present invention. Detailed view of B in FIG. CC sectional view of Figure 2 DD sectional view in Figure 2 FIG. 1 is a perspective view for explaining a slitter device for hollowing out according to the present invention. FIG. 3 is a cross-sectional view of a member to be cut cut by a slitter device for hollowing out. .

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.
The slitter device 100 for hollow cutting is equipped with a first rotating shaft 1, a second rotating shaft 2, and a third rotating shaft 3 in parallel, and the first rotating shaft 1 is provided with a first upper blade 4. , the second rotating shaft 2 is provided with a second upper blade 5. The first upper blade 4 and the second upper blade 5 are respectively directed from the cutting face 4b of the first upper blade 4 towards the cutting edge 4a side, and from the cutting face 5b of the second upper blade 5 towards the cutting edge 5a side. It has an annular dish shape that is slightly inclined and elastically deformable. On the third rotating shaft 3, a rigid cylindrical first lower blade 8 and a rigid cylindrical second lower blade 9 are arranged with a spacer 10c having a width W1 in between. The cutting edge 8a of the lower blade 8 and the cutting edge 9a of the second lower blade 9 are provided so as to face each other. Further, the spacer 10a is attached to the opposite side of the spacer 10c with the first lower blade 8 in between, and the spacer 10b is attached to the opposite side of the spacer 10c with the second lower blade 9 in between, 8 and the second lower blade 9, so that the portions of the cut products 31a, 31b that are distant from the first lower blade 8 and the second lower blade 9 in the axial direction do not sag. Responsible for providing guidance.

The cutting edge 4a of the first upper blade 4 and the cutting edge 8a of the first lower blade 8, and the cutting edge 5a of the second upper blade 5 and the cutting edge 9a of the second lower blade 9 are respectively opposed and overlapped by the S dimension. ing. In addition, the blade edge 4a of the first upper blade 4 which is elastically deformable, the blade edge 8a of the first lower blade 8, the blade edge 5a of the second upper blade 5 which is elastically deformable, and the blade edge 9a of the second lower blade 9. It is pressed into contact. The amount of pressure contact between the cutting edge 4a of the first upper blade 4 and the cutting edge 8a of the first lower blade 8 is determined by the axial width dimension of the spacer 7a and spacer 7b fitted to the first rotating shaft 1. It is determined by bringing the cutting edge 4a of No. 4 into pressure contact with the cutting edge 8a of the first lower blade 8 and elastically deforming it. The amount of pressure contact between the cutting edge 5a of the second upper blade 5 and the cutting edge 9a of the second lower blade 9 is determined by the axial width dimension of the spacer 6a and spacer 6b fitted to the second rotating shaft 2. It is determined by bringing the cutting edge 5a of No. 5 into pressure contact with the cutting edge 9a of the second lower blade 9 and elastically deforming it. The amount of pressure contact can be obtained by measuring in advance the relationship between the first upper blade 4 and the second upper blade 5 as a single unit and the amount of elastic deformation of the cutting edges.

The first rotating shaft 1, the second rotating shaft 2, and the third rotating shaft 3 are rotated in the directions of arrows 61, 62, and 63 shown in FIG. and the third rotating shaft 3, and the belt-shaped member to be cut 30 sent in the direction of the arrow 64 between the second rotating shaft 2 and the third rotating shaft 3 is cut into products 31a, 31b along the length direction. and cut into hollow scraps 32.

The workpiece 30 is first cut at the cutting point E by the cutting edge 4a of the first upper blade 4 and the cutting edge 8a of the first lower blade 8, as shown in FIGS. Among the members 30, the member to be cut 30 on the cutting edge 4a side of the first upper blade 4 is discharged as a product 31a having a width W0, as shown in FIGS. 4 and 6. Next, among the cut members 30 that have been cut, the cut member 30 on the side of the cutting surface 4b of the first upper blade 4 is sent to the second upper blade 5, and as shown in FIGS. 2 and 5, It is cut by the cutting edge 5a of the second upper blade 5 and the cutting edge 9a of the second lower blade 9 at the cutting point F, and among the cut members 30, the cut material on the cutting edge 5a side of the second upper blade 5 As shown in FIGS. 5 and 6, the member 30 is discharged as a product 31b with a width W0, and the member 30 to be cut on the side of the cutting surface 5b of the second upper blade 5 is discharged as hollow waste 32 with a width W1.

The hollowed waste 32 is first cut at the cutting point E by the cutting edge 4a of the first upper blade 4 and the cutting edge 8a of the first lower blade 8 as shown in FIGS. As shown in FIG. 5, the cutting timing of the left and right cutting surfaces is shifted so that the cutting edge 5a of the second upper blade 5 and the cutting edge 9a of the second lower blade 9 cut at the cutting point F. By simultaneously pushing the hollow waste between the two upper blades and between the lower blades, unlike when cutting with two upper blades at the same time, the hollow waste will not get caught between the lower blades and get tangled. .

In addition, the hollow waste 32 is first cut at a cutting point E, one cut surface is sent along the cutting surface 4b of the first upper blade 4, and then cut at a cutting point F. , the other cut surface is sent along the cutting surface 5b of the second upper blade 5. That is, the cut surfaces on both sides of the cut hollow scrap 32 are on the side of the cutting surface 4b of the first upper blade 4 and on the side of the cutting surface 5b of the second upper blade 5, as shown in FIG. 7(b). Sagging surfaces 103 and 104 are formed on both cut surfaces and are discarded as hollow waste 32.

In addition, as shown in the side view of FIG. 2, the hollowed waste 32 has a first rotating shaft and a second rotating shaft at a position where the cutting edges of the first upper blade 4 and the second upper blade 5 do not touch each other. As shown in the front view of FIG. 1 and the detailed view of FIG. The width W1 can be made smaller than the thickness t of the first upper blade 4 and the second upper blade 5.

By doing so, the product 31 can maintain the quality of the vertical surfaces 101 and 102 with high precision without being adversely affected by the cut surface, as shown in FIG. 7(a).

In the embodiment of the present invention, the cutting edge 4a of the first upper blade 4, the cutting edge 8a of the first lower blade 8, the cutting edge 5a of the second upper blade 5, and the cutting edge 9a of the second lower blade 9. Although the explanation has been given with respect to the cases in which they are overlapped and brought into pressure contact with each other, depending on the member to be cut, it is also possible to provide a gap (clearance) without bringing them into pressure contact with each other.

Further, in the embodiment of the present invention, a case has been described in which one hollow waste 32 is discharged, but it goes without saying that the same applies to a case where two or more hollow waste 32 are discharged.

1 First rotating shaft 2 Second rotating shaft 3 Third rotating shaft 4 First upper blade 4a Cutting edge 4b of first upper blade 4 Bake face of first upper blade 4 5 Second upper blade 5a The cutting edge 5b of the second upper blade 5 The cutting surface 6a of the second upper blade 5 Spacer 6b Spacer 7a Spacer 7b Spacer 8 First lower blade 8a The cutting edge 9 of the first lower blade 8 Second lower blade 9a Second Cutting edge 10a of lower blade 9 Spacer 10b Spacer 10c Spacer 30 Member to be cut 31 Product 31a Product 31b Product 32 Hollowed waste

Claims (1)

In a hollowing slitter device that cuts a strip-shaped member to be cut along its length and discharges at least two or more products and at least one hollowing waste,
A first rotation axis, a second rotation axis, and a third rotation axis are provided in parallel,
The first rotating shaft includes:
at least one or more first upper blades are provided;
The second rotating shaft includes:
at least one or more second upper blades are provided,
The first upper blade and the second upper blade are
One cut surface of the hollowed scraps to be cut is set to the side surface of the first upper blade,
The other cut surface of the hollowed waste to be cut is set as the hollow surface side of the second upper blade,
Arranged back and forth in the cutting direction,
The third rotating shaft includes:
a first lower blade whose cutting edge faces and overlaps the cutting edge of the first upper blade;
a second lower blade whose cutting edge faces and overlaps the cutting edge of the second upper blade,
The first lower blade and the second lower blade are
With the cutting edges facing each other,
A slitter device for hollowing, characterized in that the hollowing scraps are disposed at intervals equal to the cutting width of the hollowing scraps in the axial direction.

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