JP3856563B2 - Slitter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slitter that cuts a long thick sheet-like material such as a synthetic resin film, foil, or paper into a predetermined narrow sheet-like material.
[0002]
[Prior art]
In general, when cutting a long thick sheet-like material such as a synthetic resin film, foil, paper, or a material in which a synthetic resin is applied on one or both sides of a foil into a predetermined narrow sheet-like material, for example, A first blade mounted such that a plurality of annular blades as described in JP-A-51-67590 have a predetermined interval so that spacers and rubber rollers are alternately positioned between the blades. A shaft and a second blade shaft mounted such that a plurality of annular blades are in contact with each blade of the first blade shaft so that pressing spacers and rubber rollers are alternately positioned between the blades, A slitter having a configuration in which the first blade shaft and the second blade shaft are arranged in parallel, and the blade of the second blade shaft is brought into contact with the blade of the first blade shaft by an elastic body provided in the pressing spacer portion; Or it is described in JP-A-6-297228. Between blade spacer having a rubber layer of a predetermined width slitter configuration disposed with a predetermined interval is used as.
[0003]
[Problems to be solved by the invention]
In the slitter that cuts the sheet-like object with a rubber roller having a flat outer peripheral surface like the former described above, the rubber roller presses the sheet-like object with a large force. There is a problem that the upper blade is separated from the lower blade to cause a cutting failure. In addition, there is a problem that the outer peripheral portions of both ends of the rubber roller protrude from the side surface of the cutter to the cutting portion and are cut.
[0004]
In the slitter that cuts a sheet-like material with a gap between the side surface of the blade and the rubber layer side surface of the spacer like the latter, the sheet-like material is cut without being uniformly pressed by the rubber roller over the entire circumferential surface of the blade. The side is floating or the pressing force is reduced, and the foil stretches or tears. For this reason, the edge of the cut sheet-like material is deformed to a high-edge state, and the wound package is in an ear-high state and cannot be mounted on the post-processing machine, or the sending operation There is a problem that it sometimes causes wrinkles and breaks. When the foil is stretched and deformed, the synthetic resin 50b is separated from the foil 50a and opened on both sides (FIG. 4). There is a problem that it protrudes in a tongue shape and the other sheet-like material 50 is in a state in which the foil 50a is retracted (FIG. 5).
[0005]
It is an object of the present invention to provide a slitter that can be cut in a substantially right angle state without causing burrs, high edges, etc. in the cut portion of the cut sheet-like material, or wrinkles, etc. on the sheet-like material. It is.
[0006]
In order to solve the above problems, the invention of claim 1, a plurality of annular blade (6, 7) of the spacer (5) between blade (6,7) so as to have a predetermined gap rubber roller ( 4) and the first blade shaft (1) mounted so as to be alternately positioned, and a plurality of annular blades (16, 17) are the blades (6, 7) of the first blade shaft (1 ). And a second blade shaft (2) mounted so that pressing spacers (15) and rubber rollers (14) are alternately positioned between the blades (16, 17) so as to be in contact with the blades, the first blade shaft (1) and the second blade shaft (2) are arranged in a parallel state, and the blade (16, 17) of the second blade shaft (2) is an elastic body ( 16) provided on the pressing spacer (15) ( as brought into contact with a predetermined surface pressure to the side surface of the tool (6, 7) of the first blade shaft (1) by 23), each blade of the first blade shaft (1) (6 7) and the blades (16, 17) of the second blade shaft (2) are transported between the first blade shaft (1) and the second blade shaft (2) in a state where they overlap each other by a predetermined dimension. In the slitter that cuts the sheet-like article (50) into a plurality of strips, the rubber rollers (4, 14) are respectively arranged so that the circumferential center part in the width direction is smaller than the outer diameter dimension in the vicinity of the cutting part. A concave portion (12b, 22b) is formed, and the concave portion (12b, 22b) has a depth that allows the sheet-like object (50) to contact the bottom surface of the concave portion (12b, 22b) during the cutting. It is characterized by being made.
[0007]
According to a second aspect of the invention, each blade of said end faces each first blade shaft (1) side and said second blade shaft of each blade (6, 7) of (2) of each rubber roller (4, 14) ( 16, 17) are in contact with or very close to the sides .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic sectional view showing an embodiment of the slitter structure of the present invention, FIG. 2 is a schematic enlarged view showing a cutting state of a sheet-like material in the slitter of FIG. 1, and the slitter is a machine frame (not shown). A fixed-side first blade shaft 1 rotatably attached to a bearing by a bearing, and a second blade attached to the machine frame by a bearing so that the distance between the axes can be adjusted relative to the first blade shaft 1. The shaft 2 is constituted.
[0009]
The first blade shaft 1 described above includes a first rubber roller 4 for forming a gap having a width dimension equal to the width dimension (W) of the sheet-like material to be cut, an annular blade 6, an annular spacer 5, and an annular shape. The blade 7 is sequentially inserted into the shaft body 3, and the collar 8 is inserted into both ends of the blade 7, and is tightened from both sides by a washer 9 and a nut 10 to be formed as a single body. In this case, the first rubber roller 4 and the spacer 5 are fitted and inserted so that the first rubber roller 4 and the spacer 5 are alternately positioned inside the collar 8 according to the number of cut points.
[0010]
The first rubber roller 4 is composed of a boss 11 to be inserted into the shaft body 3 and a synthetic rubber such as urethane rubber, butyl rubber, silicon rubber, etc., having a thickness of 1 to 20 mm attached to the outer peripheral portion thereof by bonding, welding or the like. The rubber body 12 is used. The thickness dimension of the rubber body 12 is appropriately set according to the outer diameter dimension of the shaft body 3, the outer diameter dimensions of the cutters 6 and 7, the rubber hardness, and the like.
[0011]
The spacer 5 has a width dimension (Wa) obtained by subtracting the thickness dimension (T) of the cutters 6 and 7 from the width dimension (W) of the first rubber roller 4, and the outer diameter dimension is outside the cutters 6 and 7. It is preferable to have the same dimension as the diameter dimension.
[0012]
The spacer 5 can be formed of hard synthetic resin such as stainless steel, vinyl chloride resin, polyamide resin, or the like, or can be formed of the boss 11 and the rubber body 12 in the same manner as the first rubber roller 4.
[0013]
The above-mentioned second blade shaft 2 has a second rubber roller 14 for forming a gap, an annular blade 16, an annular pressing spacer 15, and an annular blade 17 sequentially inserted into the shaft 13 and both ends thereof. A collar 18 is inserted into the part and tightened from both sides by a washer 19 and a nut 20 to form an integrated object. In this case, inside the collar 18, the blade 16, the pressing spacer 15, and the blade 17 are disposed at a position facing the first rubber roller 4 on the fixed blade shaft 1, and the second rubber roller is disposed at a position facing the spacer 5 and the blades 6 and 7. It is inserted so that 14 is located.
[0014]
Similar to the first rubber roller 4, the second rubber roller 14 includes a boss 21 and a rubber body 22.
[0015]
The pressing spacer 15 has a thickness obtained by subtracting the thickness of the blades 16 and 17 and the movable gap so that the blades 16 and 17 can move smoothly in the axial direction.
[0016]
An annular groove 15a having a concave cross section is formed on both side surfaces of the pressing spacer 15, and a dish for bringing the blades 16, 17 into contact with the side surfaces of the blades 6, 7 of the first blade shaft 1 at a predetermined surface pressure. An elastic body 23 such as a spring or a synthetic rubber ring is attached.
[0017]
The second rubber roller 14 has the same width (W) as the first rubber roller 4.
[0018]
The above rubber bodies 12 and 22 set the thickness dimension according to the outer diameter dimension of the shaft body 3, the outer diameter dimension of the blades 6 and 7, the rubber hardness, etc. within the range of 1 to 20 mm, and the outer diameter dimension (D1) is It is set to be equal to the outer diameter (D) of the blades 6, 7, 16, and 17. The circumferential surfaces of the rubber bodies 12 and 22 are concave 12b and 22b at the center in the width direction.
[0019]
The width dimension (E) of the contact portions 12a2, 22a1 and the depth dimension (h) of the concave portions 12b, 22b are the thickness and material of the sheet-like material to be cut, the outer diameter of the blades 6, 7, 16, 17 It is set according to the dimension, the width dimension, the distance between the first blade shaft 1 and the second blade shaft 2, and the like.
[0020]
Then, the rubber body 12 is assembled with the side surface of the blades 6 and 7 and the side surface of the rubber body 22 in contact with or extremely close to the side surfaces of the blades 16 and 17 (there is almost no gap).
[0021]
When tightening the nuts 10 and 20 described above, it is preferable to provide a locking member such as a disc spring. Further, it is possible to form the washers 9 and 19 and the collars 8 and 18 as one body, and to omit the collars 8 and 18.
[0022]
The first blade shaft 1 and the second blade shaft 2 described above are rotated in a reverse direction at a predetermined speed by a driving device (not shown).
[0023]
In the cutting part of the sheet-like object 50 in the slitter described above, the shaft bodies 3 and 13 are arranged such that the blades 6, 7, 16, and 17 are overlapped by a predetermined dimension as shown in FIGS. Since it is attached to the machine frame (not shown), the contact parts 12a1, 12a2, 22a1, 22a2 of the rubber bodies 12, 22 are crushed and the concave parts 12b, 22b are formed with the sheet-like object 50 and the poles. The sheet-like object 50 is pressed against the circumferential surfaces of the blades 6, 7, 16, 17 in a state of being slightly separated or in contact with a low surface pressure.
[0024]
When the sheet-like object 50 is conveyed in such a state and the first blade shaft 1 on the fixed side and the second blade axis 2 on the movable side are rotated, the sheet-like object 50 is cut into the blades 6, 7, 16, 17. The portion is cut into a substantially right angle without tearing or extending.
[0025]
In the embodiment described above, the first blade shaft 1 is the fixed side and the second blade shaft 2 is the movable side, but it goes without saying that the first blade shaft 1 can be the movable side and the second blade shaft 2 can be the fixed side.
[0026]
The insertion positions of the blades 6 and 7, the first rubber roller 4 and the spacer 5 on the first blade shaft 1, and the insertion positions of the blades 16 and 17, the second rubber roller 13 and the pressing spacer 15 on the second blade shaft 2 are as follows. It sets suitably according to the cutting location of the sheet-like material to cut, and the number of cuts.
[0027]
【The invention's effect】
According to the present invention 請 Motomeko 1, sheet material of a thickness, a soft sheet material, different such sheet hardness in the thickness direction as synthetic resin or the like is applied to the foil Can be cut in a substantially right angle without causing burrs, high edges, etc. in the cut portion of the sheet-like material, or wrinkles in the sheet-like material, and the end of the rubber body protrudes from the cut portion of the blade. It is possible to prevent cutting.
[0028]
According to the present invention 請 Motomeko 2, it can be more reliably cut portion of sheet material substantially perpendicular state.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing one embodiment of the configuration of the slitter of the present invention.
FIG. 2 is a schematic enlarged view showing a cutting state of a sheet-like material in the slitter of FIG.
FIG. 3 is a schematic view showing a cut portion of a sheet-like material cut by the slitter of the present invention.
FIG. 4 is a schematic view showing a cut portion of a sheet-like material cut by a conventional slitter.
FIG. 5 is a schematic view showing a cut portion of a sheet-like material cut by a conventional slitter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st blade axis | shaft 2 2nd blade axis | shaft 3, 13 Shaft body 4 1st rubber roller 5 Spacer 6, 7, 16, 17 Cutting tool 11, 21 Boss 12, 22 Rubber body 14 2nd rubber roller 15 Pressing spacer 23 Elastic body
12a2,22a1 contact portions 12b, 22b recessed shaped part

Claims (2)

A first blade mounted such that the spacers (5) and the rubber rollers (4) are alternately positioned between the blades (6, 7) so that the plurality of annular blades (6, 7) have a predetermined interval. A pressing spacer ( 16, 17) between the blade (16, 17) so that the shaft (1) and the plurality of annular blades (16, 17) can come into contact with the blades (6, 7) of the first blade shaft (1). 15) and the second blade shaft (2) mounted so that the rubber rollers (14) are alternately positioned,
The first blade shaft (1) and the second blade shaft (2) are arranged in parallel, and the blades (16, 17) of the second blade shaft (2) are provided on the pressing spacer (15). The elastic body (23) is brought into contact with the side surface of the blade (6, 7) of the first blade shaft (1) at a predetermined surface pressure ,
The first blade shaft (1) in a state where the blades (6, 7) of the first blade shaft (1) and the blades (16, 17) of the second blade shaft (2) overlap each other by a predetermined dimension. And a slitter that cuts the sheet-like material (50) conveyed between the second blade shaft (2) into a plurality of strips,
The rubber rollers (4, 14) are respectively formed with concave portions (12b, 22b) such that the circumferential central portion in the width direction is smaller than the outer diameter in the vicinity of the cut portion, and the concave portions (12b, 12b, 22b) is a slitter characterized in that the sheet-like object (50) has such a depth that it can come into contact with the bottom surface of the concave parts (12b, 22b) during the cutting . Both end surfaces of the rubber rollers (4, 14) are respectively on the side surfaces of the blades (6, 7) of the first blade shaft (1) and the side surfaces of the blades (16, 17) of the second blade shaft (2). slitter according to 請 Motomeko 1 formed by or in close proximity in contact respectively.

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