JP7140855B2 - Strip-shaped sheet cutting device and strip-shaped sheet cutting method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a strip-shaped sheet cutting device and a strip-shaped sheet cutting method.

Patent Document 1 discloses a strip-shaped sheet cutting device and a strip-shaped sheet cutting method as follows. Specifically, the cutting method of Patent Document 1 includes steps of winding a long ceramic green sheet around the outer peripheral surface of a cylindrical drum, rotating the drum to feed the ceramic green sheet, and transferring the ceramic green sheet to the drum. cutting the ceramic green sheet supported on the outer peripheral surface of the drum by moving the cutting blade toward the outer peripheral surface of the drum in the vicinity of the portion away from the outer peripheral surface.

JP-A-6-310389

The cutting blade is on standby at a position spaced radially outward of the drum from the ceramic green sheet conveyed by the drum. Then, when a predetermined timing for cutting the ceramic green sheet comes, the cutting blade is moved radially inward of the drum by a reciprocating means such as an air cylinder, thereby cutting the ceramic green sheet supported on the outer peripheral surface of the drum. disconnect. After cutting, the cutting blade is moved radially outward of the drum by a reciprocating means such as an air cylinder, and returned to a standby position away from the ceramic green sheet conveyed by the drum. By repeating this series of operations, a long ceramic green sheet (strip-shaped sheet) is continuously cut into constant dimensions.

However, in accordance with the conveying speed of the belt-shaped sheet conveyed in the circumferential direction of the drum by the rotation of the drum, the timing of cutting the belt-shaped sheet by moving the cutting blade inward in the radial direction of the drum by reciprocating means such as an air cylinder is adjusted. , it was difficult to always make it a constant interval. For this reason, it has been difficult to repeatedly cut the strip-shaped sheet into a constant size with high precision using the strip-shaped sheet cutting apparatus and the strip-shaped sheet cutting method described above.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a strip-shaped sheet cutting apparatus and a strip-shaped sheet cutting method capable of repeatedly cutting a strip-shaped sheet to a predetermined size with high accuracy. do.

According to one aspect of the present invention, there is provided a strip-shaped sheet cutting device that cuts a strip-shaped sheet extending in a longitudinal direction in a width direction perpendicular to the longitudinal direction, wherein the strip-shaped sheet is rotated in a circumferential direction to cut the strip-shaped sheet in a conveying direction along the longitudinal direction. A conveying roll that conveys the belt-shaped sheet to the conveying roll, and has one cutting blade extending in the axial direction of the conveying roll on the outer peripheral surface side of the conveying roll or a plurality of the belt-shaped sheets at equal intervals in the circumferential direction. A transport roll that transports the roll by winding it around the outer peripheral surface of the roll, and each of the cutting blades that move in the circumferential direction together with the strip-shaped sheet as the transport roll rotates are positioned at a first circumferential position of the transport roll. , a portion of the belt-shaped sheet positioned radially outward of the conveying roll with respect to the cutting blade is pressed against the cutting blade positioned radially inward to cut the belt-shaped sheet. and an anvil for cutting a belt-shaped sheet.

The cutting device described above includes a conveying roll that rotates in the circumferential direction and conveys the belt-shaped sheet in the conveying direction along the longitudinal direction. The conveying roll conveys the belt-shaped sheet by wrapping it around the outer peripheral surface of the conveying roll. Further, the transport roll has a cutting blade extending in the axial direction of the transport roll (the direction that matches the width direction of the belt-shaped sheet transported by the transport roll) on the outer peripheral surface side of the transport roll. One or a plurality of cutting blades are provided (fixed) at equal intervals in the circumferential direction on the outer peripheral surface side of the transport roll.

This cutting blade has, for example, a length equal to or greater than the width dimension (width-direction dimension) of the belt-shaped sheet, and extends over the entire width direction of the belt-shaped sheet so as to face the belt-shaped sheet conveyed by the conveying rolls. It is a cutting blade provided. For example, the cutting blade is provided on the conveying roll in a manner fixed to a groove recessed radially inward from the cylindrical outer peripheral surface. The cutting blade moves in the circumferential direction together with the belt-shaped sheet as the conveying roll rotates.

Furthermore, the cutting device described above comprises an anvil. When each of the cutting blades moving in the circumferential direction together with the belt-like sheet as the conveying roll rotates reaches the first circumferential position of the conveying roll, the anvil moves the conveying roll relative to the cutting blade of the belt-like sheet. The radially outer portion is pressed against the radially inner cutting edge to cut the strip sheet.

According to such a cutting device, it is possible to repeatedly cut the belt-like sheet into a constant size with high accuracy. The reason for this is that in this cutting device, the cutting position of the belt-shaped sheet can be set at the position (fixed position) of the cutting blade provided on the conveyor roll that conveys the belt-shaped sheet, and the cutting blade can be fixed to the conveyor roll. This is because one or more are provided at equal intervals in the circumferential direction of the transport roll. Therefore, when the conveying roll is provided with one cutting blade, the cutting length (cutting interval) of the belt-shaped sheet can be aligned with the outer peripheral length of the conveying roll. Further, when a plurality of cutting blades are provided at equal intervals in the circumferential direction of the conveying roll, the cutting length (cutting interval) of the belt-shaped sheet is determined by the cutting blades arranged at equal intervals along the outer peripheral surface of the conveying roll. can be aligned to the dimension of the arrangement interval (circumferential dimension). Therefore, the above-described cutting device can repeatedly cut the belt-like sheet into a constant size with high accuracy.

The method of cutting the belt-shaped sheet with the cutting blade is not particularly limited, and may be a score cut method (push cutting method) or a laser cut method (groove cutting method). Moreover, the strip-shaped sheet may be any sheet as long as it is a strip-shaped sheet extending in the longitudinal direction, and examples thereof include a strip-shaped electrode sheet for batteries and a strip-shaped separator sheet for batteries. Examples of the strip-shaped electrode sheet include a strip-shaped collector foil having an electrode mixture layer laminated on the surface thereof. As the belt-shaped separator sheet, for example, a belt-shaped polyolefin resin sheet can be used.

Another aspect of the present invention is a method for cutting a strip-shaped sheet extending in a longitudinal direction in a width direction orthogonal to the longitudinal direction using a cutting device, wherein the cutting device rotates in the circumferential direction. A conveying roll that conveys the belt-shaped sheet in the conveying direction along the longitudinal direction, wherein one cutting blade extending in the axial direction of the conveying roll is provided on the outer peripheral surface side of the conveying roll or at equal intervals in the circumferential direction and a plurality of conveying rolls for conveying the belt-shaped sheet by wrapping it around the outer peripheral surface of the conveying roll, and each of the cuts moving in the circumferential direction together with the belt-shaped sheet as the conveying roll rotates. When the blade reaches the first circumferential position of the conveying roll, the portion of the belt-shaped sheet that is positioned radially outward of the conveying roll with respect to the cutting blade is positioned radially inward of the conveying roll. and an anvil for cutting the strip-shaped sheet by pressing against the cutting blade. When each of the cutting blades moving in the direction reaches the first circumferential position, the portion of the belt-shaped sheet located outside the cutting blade in the radial direction of the conveying roll is cut by the anvil. In the method for cutting a belt-shaped sheet, the belt-shaped sheet is cut by pressing against the cutting blade located inside in the radial direction.

In the cutting method described above, the strip sheet extending in the longitudinal direction is cut in the width direction using the cutting device described above. Specifically, each of the cutting blades (one or more cutting blades) moving in the circumferential direction together with the strip-shaped sheet as the transport roll rotates while the strip-shaped sheet is transported by the transport roll is positioned at the first circumferential position. When the belt-like sheet is reached, the portion of the belt-like sheet positioned radially outside the conveying roll with respect to the cutting blade is pressed against the cutting blade positioned radially inward by the anvil to cut the belt-like sheet. The method of cutting the belt-shaped sheet with the cutting blade is not particularly limited, and may be a score cut method (push cutting method) or a laser cut method (groove cutting method).

According to such a cutting method, the belt-shaped sheet can be repeatedly cut to a constant size with high accuracy. The reason for this is that, in this cutting method, the cutting position of the belt-shaped sheet can be determined at the position (fixed position) of the cutting blade provided on the conveyor roll that conveys the belt-shaped sheet, and the cutting blade can be fixed to the conveyor roll. This is because one or more are provided at equal intervals in the circumferential direction of the transport roll. Therefore, when the conveying roll is provided with one cutting blade, the cutting length (cutting interval) of the belt-shaped sheet can be aligned with the outer peripheral length of the conveying roll. In addition, when a plurality of cutting blades are provided at equal intervals in the circumferential direction of the transport roll, the cutting length (cutting interval) of the belt-shaped sheet is determined by the number of cutting blades arranged at equal intervals along the outer peripheral surface of the transport roll. It can be aligned with the dimension of the arrangement interval (circumferential dimension). Therefore, in the above-described cutting method, it is possible to repeatedly cut the strip-shaped sheet into a constant size with high accuracy.

1 is a schematic diagram of a strip-shaped sheet cutting device according to an embodiment; FIG. It is a top view of a belt-shaped sheet. FIG. 2 is an enlarged view of a C portion in FIG. 1; It is a figure explaining the cutting method of the strip|belt-shaped sheet concerning embodiment. It is a figure explaining the cutting device of the strip|belt-shaped sheet concerning a deformation|transformation.

<Embodiment>
EMBODIMENT OF THE INVENTION Hereinafter, embodiment which actualized this invention is described in detail, referring drawings. In the present embodiment, a belt-shaped sheet cutting device 1 shown in FIG. 1 (hereinafter also simply referred to as a cutting device 1) is used to cut a belt-shaped sheet 10 extending in the longitudinal direction DL in the width direction DW (a direction orthogonal to the longitudinal direction DL). , perpendicular to the plane of the paper in FIG. 1). As the strip-shaped sheet 10, for example, a strip-shaped electrode sheet for batteries, a strip-shaped separator sheet for batteries, or the like can be used. Examples of the strip-shaped electrode sheet include a strip-shaped collector foil having an electrode mixture layer laminated on the surface thereof. As the belt-shaped separator sheet, for example, a belt-shaped polyolefin resin sheet can be used.

The cutting device 1 of the present embodiment cuts the strip-shaped sheet 10 in the width direction DW to produce a plurality of strip-shaped sheets 18 (see FIG. 1). This cutting apparatus 1 includes a transport roll 20, an anvil-equipped roll 30, a nip roll 50, and a storage case 70, as shown in FIG. The transport roll 20 rotates in the circumferential direction (clockwise in FIG. 1) to transport the belt-shaped sheet 10 in the transport direction DM along the longitudinal direction DL. The conveying roll 20 conveys the belt-shaped sheet 10 by wrapping it around the outer peripheral surface 20b of the conveying roll 20 .

Further, the transport roll 20 has a cutting blade 21 extending in the axial direction of the transport roll 20 (the direction in which the axis AX extends, the direction orthogonal to the paper surface in FIG. 1) on the outer peripheral surface 20b side of the transport roll 20. The axial direction of the transport roll 20 coincides with the width direction DW of the belt-shaped sheet 10 wound around the outer peripheral surface 20b of the transport roll 20 and transported. The cutting blade 21 has a length equal to or longer than the width dimension W (the dimension in the width direction DW, see FIG. 2) of the strip-shaped sheet 10, and the strip-shaped sheet that is wound around the outer peripheral surface 20b of the transport roll 20 and transported. 10 over the entire width direction DW.

Specifically, the cutting blade 21 is fixed to the bottom portion 23b of the groove portion 23 recessed radially inward from the cylindrical outer peripheral surface 20b of the transport roll 20, and the cutting edge 21b is directed radially outward. It is provided on the transport roll 20 (see FIGS. 1 and 3). The cutting blade 21 has a triangular cross section and extends in the axial direction of the transport roll 20 (the direction orthogonal to the paper surface in FIG. 3). The cutting blade 21 moves in the circumferential direction together with the strip-shaped sheet 10 as the transport roll 20 rotates.

The conveying roll 20 is a hollow cylindrical suction roll, and a large number of through holes 20d are formed in the cylindrical wall portion forming the outer peripheral surface 20b (see FIG. 1). A suction device (not shown) for sucking the air in the inner space of the transport roll 20 is connected to the transport roll 20 . The air in the transport roll 20 is sucked by this suction device, so that the belt-shaped sheet 10 wound around the outer peripheral surface 20b of the transport roll 20 is sucked toward the center of the transport roll 20 through the through holes 20d of the transport roll 20. receive the power to be As a result, the belt-shaped sheet 10 wound around the outer peripheral surface 20b of the transport roll 20 and the strip-shaped sheet 18 produced by cutting are attracted to the outer peripheral surface 20b of the transport roll 20 while being attracted to the outer peripheral surface 20b of the transport roll 20. transported along.

Further, four groove portions 23 recessed radially inward from the outer peripheral surface 20b are formed in the transport roll 20 at equal intervals in the circumferential direction of the transport roll 20 (see FIG. 1). The above-described cutting blade 21 is fixed to the bottom portion 23b of each groove portion 23. As shown in FIG. Therefore, four cutting blades 21 are provided (fixed) on the transport roll 20 at regular intervals in the circumferential direction of the transport roll 20 . In other words, four cutting blades 21 are arranged on the conveying roll 20 with their positions shifted by 90° around the axis AX. The tip of the cutting blade 21 (the tip of the cutting edge 21b) is arranged in the groove 23 (at the same radial position as the outer peripheral surface 20b, or radially inward from the outer peripheral surface 20b).

The anvil-equipped roll 30 has a cylindrical roll 32 and an anvil 31 fixed to the roll 32 (see FIGS. 1 and 3). The anvil 31 is an anvil for push cutting, and is provided on the roll 32 so as to protrude radially outward from the outer peripheral surface 32 b of the roll 32 . The anvil-equipped roll 30 is provided parallel to the transport roll 20 . Specifically, the anvil-equipped roll 30 is provided so that the outer peripheral surface 32b of the roll 32 faces (faces) the outer peripheral surface 20b of the transport roll 20 at the first circumferential position P1 of the transport roll 20 (Fig. 1).

Note that the first circumferential position P1 is transported further than the winding start position PS of the belt-shaped sheet 10 around the outer peripheral surface 20b of the transport roll 20 (the position where the outer peripheral surface 20b of the transport roll 20 and the outer peripheral surface of the nip roll 50 face each other). It is located downstream in direction DM. Specifically, the first circumferential position P1 is a position shifted by a first angle θ1 (45° in this embodiment) downstream in the transport direction DM from the winding start position PS around the axis AX of the transport roll 20. (see FIG. 1).

The diameter (outer diameter) of the roll 32 of the anvil-equipped roll 30 is ¼ of the diameter (outer diameter) of the transport roll 20, and the peripheral speed of the roll 32 is the same as the peripheral speed of the transport roll 20. . Therefore, the anvil-equipped roll 30 itself rotates once in the circumferential direction when the conveying roll 20 rotates 1/4 in the circumferential direction. That is, the anvil-equipped roll 30 rotates four times in the circumferential direction when the transport roll 20 rotates once in the circumferential direction. Then, when each cutting blade 21 of the transport roll 20 reaches the first circumferential position P1 of the transport roll 20, the anvil 31 reaches the first circumferential position P1 and the cutting blade 21 (cutting edge 21b) and the radial direction A transport roll 20 and an anvil-equipped roll 30 are provided so as to face each other (see FIGS. 1 and 3).

Therefore, when each of the cutting blades 21 moving in the circumferential direction together with the belt-shaped sheet 10 from the winding start position PS along with the rotation of the transport roll 20 reaches the first circumferential position P1 of the transport roll 20, the roll with anvil 30 By the anvil 31, the portion of the belt-shaped sheet 10 positioned radially outside of the conveying roll 20 with respect to the cutting blade 21 (referred to as a cutting blade facing portion 10c) is moved to the cutting blade 21 positioned radially inward. By pressing, the strip sheet 10 can be cut in the width direction DW (see FIG. 3). In this embodiment, the belt-shaped sheet 10 is cut by a score cut method (push cut method).

Further, in the present embodiment, the projection height of the anvil 31 (projection amount of the roll 32 radially outward) and the position of the tip of the cutting blade 21 are adjusted so that the anvil 31 does not come into contact with the cutting blade 21 during cutting. (the position in the radial direction of the transport roll 20) is set. Therefore, in the present embodiment, the strip-shaped sheet 10 is cut by the score cut method (push cut method) without bringing the anvil 31 into contact with the tip of the cutting edge 21b of the cutting blade 21 (see FIG. 3). 3 is an enlarged view of the portion C in FIG. 1, and is an enlarged cross-sectional view of the cutting device 1 when the cutting blade 21 reaches the first circumferential position P1 (in the direction orthogonal to the axial direction of the transport roll 20 enlarged cross-sectional view).

In this way, the strip-shaped sheet 18 is produced by cutting the strip-shaped sheet 10 in the width direction DW. The produced strip-shaped sheet 18 is transported along the outer peripheral surface 20b of the transport roll 20 as the transport roll 20 rotates, and then stored in the storage case 70 positioned below the transport roll 20 ( See Figure 1).

According to such a cutting device 1, at the first circumferential position P1, it is possible to repeatedly cut the strip-shaped sheet 10 into a constant size with high accuracy. The reason for this is that in the cutting device 1, the cutting position (the position of the cut portion 10b) of the strip-shaped sheet 10 is set at the position (fixed position) of the cutting blade 21 provided on the transport roll 20 that transports the strip-shaped sheet 10. Moreover, the cutting blades 21 are provided at equal intervals in the circumferential direction of the conveying roll 20 . As a result, the cutting length (cutting interval, that is, the length of the strip-shaped sheet 18) of the strip-shaped sheet 10 is the dimension of the arrangement interval (circumferential directional dimension).

In this embodiment, four cutting blades 21 are provided at regular intervals in the circumferential direction of the transport roll 20 . That is, the cutting blades 21 are arranged side by side in the circumferential direction of the transport roll 20 at regular intervals of a length L<b>1 that is 1/4 of the outer peripheral length of the transport roll 20 . Therefore, the cut length of the strip-shaped sheet 10 (cutting interval, that is, the length of the strip-shaped sheet 18) can be made equal to the length L1, which is 1/4 of the outer peripheral length of the transport roll 20. FIG. As described above, the cutting device 1 of the present embodiment can repeatedly cut the belt-shaped sheet 10 into the constant size L1 with high accuracy (see FIG. 4). FIG. 4 is a plan view of the belt-shaped sheet 10 that is cut by the cutting blade 21 while being conveyed in the conveying direction DM by the conveying rolls 20. As shown in FIG.

Next, a method for cutting the belt-shaped sheet 10 according to the embodiment will be described. In this embodiment, the cutting device 1 described above is used to cut the belt-shaped sheet 10 extending in the longitudinal direction DL in the width direction DW. Specifically, while conveying the belt-shaped sheet 10 by the rotating conveying roll 20, the cutting blade 21 moves in the circumferential direction together with the belt-shaped sheet 10 from the winding start position PS as the conveying roll 20 rotates. When reaching the first circumferential position P1, the portion of the belt-shaped sheet 10 positioned radially outside of the conveying roll 20 with respect to the cutting blade 21 reaching the first circumferential position P1 by the anvil 31 of the roll with anvil 30 (Cutting blade facing portion 10c) is pressed against the cutting blade 21 positioned radially inward (see FIGS. 1 and 3).

Thereby, the strip-shaped sheet 18 is produced by cutting the strip-shaped sheet 10 in the width direction DW. The produced strip-shaped sheet 18 is transported along the outer peripheral surface 20b of the transport roll 20 as the transport roll 20 rotates, and then stored in the storage case 70 positioned below the transport roll 20 ( See Figure 1). In this embodiment, the strip-shaped sheet 10 is cut by a score cut method (push cut method).

According to such a cutting method, the strip-shaped sheet 10 can be repeatedly cut to a constant size with high accuracy. The reason for this is that in this cutting method, the cutting position (the position of the cut portion 10b) of the strip-shaped sheet 10 is set at the position (fixed position) of the cutting blade 21 provided on the transport roll 20 that transports the strip-shaped sheet 10. Moreover, the cutting blades 21 are provided at regular intervals in the circumferential direction of the conveying roll 20 . As a result, the cut length of the belt-shaped sheet 10 (that is, the length of the strip-shaped sheet 18) is the dimension of the arrangement interval of the cutting blades 21 arranged at regular intervals along the outer peripheral surface 20b of the transport roll 20 (circumferential dimension ) can be aligned. Specifically, the cut length of the strip-shaped sheet 10 (that is, the length of the strip-shaped sheet 18) can be made equal to the length L1, which is 1/4 of the outer peripheral length of the transport roll 20. FIG. As described above, the cutting method of the present embodiment can repeatedly cut the belt-shaped sheet 10 to the constant size L1 with high accuracy (see FIG. 4).

<Deformed form>
In the embodiment, the strip-shaped sheet 10 is cut by a score cut method (push cut method). On the other hand, in this modification, as shown in FIG. 5, the belt-shaped sheet 10 is cut by a laser cutting method (groove cutting method). FIG. 5 is a view for explaining a strip-shaped sheet cutting device 101 according to a modified embodiment, and is a view corresponding to an enlarged view of the C section in FIG. A strip-shaped sheet cutting device 101 according to the modified embodiment differs from the cutting device 1 of the embodiment only in that the anvil-equipped roll 30 is changed to an anvil-equipped roll 40 .

The anvil-equipped roll 40 differs from the anvil-equipped roll 30 of the embodiment only in the anvil 41 . The anvil 41 is an anvil for grooving, and has a groove portion 41b that opens outward and into which the cutting edge 21b of the cutting blade 21 of the transport roll 20 can be inserted (see FIG. 5).

In this modification, a cutting device 101 is used to cut the belt-shaped sheet 10 extending in the longitudinal direction DL in the width direction DW. Specifically, when the cutting blade 21 moving in the circumferential direction together with the belt-shaped sheet 10 from the winding start position PS as the transport roll 20 rotates reaches the first circumferential position P1 of the transport roll 20, the roll with anvil 40 The anvil 41 moves a portion of the belt-shaped sheet 10 radially outward of the conveying roll 20 with respect to the cutting blade 21 reaching the first circumferential position P1 (cutting blade facing portion 10c) radially inward. Press against the cutting edge 21 located (see FIG. 5).

At this time, the tip portion 41 c of the anvil 41 enters the groove portion 23 of the transport roll 20 and is arranged radially inward of the outer peripheral surface 20 b of the transport roll 20 , and the cutting edge 21 b of the cutting blade 21 cuts into the belt-like sheet 10 . It penetrates through the cutting blade facing portion 10c and enters the groove portion 41b of the anvil 41 (see FIG. 5). Thereby, the strip-shaped sheet 18 is produced by cutting the belt-shaped sheet 10 in the width direction DW by a razor cutting method (groove cutting method). With the cutting device 101 and the cutting method of this modified embodiment, the strip-shaped sheet 10 can be repeatedly cut with high accuracy into the constant size L1, as in the embodiment (see FIG. 4).

In the above, the present invention has been described in accordance with the embodiments and modifications, but the present invention is not limited to the above-described embodiments and the like, and can be appropriately modified and applied without departing from the scope of the invention. Not even.

For example, in the embodiment and modification, the four cutting blades 21 are provided at equal intervals in the circumferential direction of the transport roll 20, but the number of cutting blades 21 is not limited to this, and any number of cutting blades 21 may be provided. can be For example, the belt-shaped sheet 10 may be cut using a cutting device in which only one cutting blade 21 is provided on the conveying roll 20 . In this case, the cut length of the strip-shaped sheet 10 (that is, the length of the strip-shaped sheet 18 ) can be aligned with the outer peripheral length of the transport roll 20 . As a result, the belt-shaped sheet 10 can be repeatedly cut to a certain size (peripheral length of the conveying roll 20) with high accuracy.

Alternatively, the belt-shaped sheet 10 may be cut using a cutting device in which two cutting blades 21 are provided at equal intervals in the circumferential direction of the transport roll 20 . In this case, the cut length of the strip-shaped sheet 10 (that is, the length of the strip-shaped sheet 18) can be made equal to half the outer peripheral length of the transport roll 20. FIG. As a result, the belt-shaped sheet 10 can be repeatedly cut to a certain size (half the length of the outer circumference of the transport roll 20) with high accuracy.

1, 101 strip-shaped sheet cutting device 10 strip-shaped sheet 20 transport roll 20b outer peripheral surface 21 cutting blades 30, 40 rolls with anvils 31, 41 anvils 32, 42 rolls DL longitudinal direction DM transport direction DW width direction P1 first circumferential position

Claims (2)

In a strip-shaped sheet cutting device for cutting a strip-shaped sheet extending in the longitudinal direction in a width direction orthogonal to the longitudinal direction,
A conveying roll that rotates in the circumferential direction and conveys the belt-shaped sheet in the conveying direction along the longitudinal direction, wherein one or more cutting blades extending in the axial direction of the conveying roll are provided on the outer peripheral surface side of the conveying roll. a plurality of conveying rolls arranged at equal intervals in the circumferential direction, and conveying the belt-shaped sheet by wrapping it around the outer peripheral surface of the conveying roll;
When each of the cutting blades moving in the circumferential direction together with the belt-shaped sheet along with the rotation of the conveying roll reaches a first circumferential position of the conveying roll, the cutting blades of the belt-shaped sheet and an anvil for pressing a radially outer portion of the conveying roll against the radially inner cutting blade to cut the belt-shaped sheet. In a method for cutting a strip-shaped sheet extending in the longitudinal direction, the strip-shaped sheet is cut in a width direction orthogonal to the longitudinal direction using a cutting device,
The cutting device
A conveying roll that rotates in the circumferential direction and conveys the belt-shaped sheet in the conveying direction along the longitudinal direction, wherein one or more cutting blades extending in the axial direction of the conveying roll are provided on the outer peripheral surface side of the conveying roll. a plurality of conveying rolls arranged at equal intervals in the circumferential direction, and conveying the belt-shaped sheet by wrapping it around the outer peripheral surface of the conveying roll;
When each of the cutting blades moving in the circumferential direction together with the belt-shaped sheet as the conveying roll rotates reaches the first circumferential position of the conveying roll, the cutting blades of the belt-shaped sheet an anvil that presses a portion located radially outward of the transport roll against the cutting blade located radially inward to cut the belt-shaped sheet,
The cutting method is
While conveying the belt-shaped sheet by the conveying roll, each of the cutting blades moving in the circumferential direction together with the belt-shaped sheet as the conveying roll rotates reaches the first circumferential position. A strip-shaped sheet is cut by pressing a portion of the sheet positioned radially outward of the conveying roll with respect to the cutting blade against the cutting blade positioned radially inward by the anvil. cutting method.

Images