Slitter

Abstract

The present invention provides a slitter. The slitter comprises: a cutter configured to separate a fabric into a first exit portion and a second exit portion; an entry roll configured to adjust an entry angle formed between an entry portion of the fabric entering the cutter and a reference surface; a first distance measurement sensor configured to detect the vertical displacement of the entry roll; a first exit roll configured to adjust a first exit angle formed between the first exit portion of the fabric and the reference surface; a second distance measurement sensor configured to detect the vertical displacement of the first exit roll; a second exit roll configured to adjust a second exit angle formed between the second exit portion of the fabric and the reference surface; and a third distance measurement sensor configured to detect the vertical displacement of the second exit roll.

Description

Slitter

[0001] The present invention relates to a slitter.

[0002] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0053917, filed April 23, 2024, and all contents of the document in that Republic of Korea Patent Application are incorporated herein by reference.

[0003] Slitting is a process in which fabric is cut parallel to the direction of fabric travel with a knife, thereby separating the fabric into multiple segments. In this slitting process, the fabric entry / exit angle is a key factor affecting the quality of the cut surface and the occurrence of defects such as burrs. The fabric entry / exit angle includes the angle between the fabric entering the knife and a reference plane, and the angle between the fabric segments exiting the knife and the reference plane. To improve the reliability of products manufactured through the slitting process, precise monitoring of the fabric entry / exit angle is required.

[0004] The technical problem to be achieved by the present invention is to provide a slitter.

[0005] In order to solve the above-described problem, the technical idea of ​​the present invention comprises a cutter including a first knife and a second knife arranged in a vertical direction, and configured to cut a fabric passing between the first knife and the second knife to separate the fabric into a first exit portion and a second exit portion; an entrance roll configured to move in the vertical direction and adjust an angle of incidence that an entrance portion of the fabric entering the cutter makes with respect to a reference plane; a first distance measuring sensor configured to detect a vertical movement distance of the entrance roll, which is a distance that the entrance roll moves in the vertical direction from the reference plane; a first exit roll configured to move in the vertical direction and adjust a first angle of incidence that the first exit portion of the fabric makes with respect to the reference plane; a second distance measuring sensor configured to detect a vertical movement distance of the first exit roll, which is a distance that the first exit roll moves in the vertical direction from the reference plane; a second exit roll configured to move in the vertical direction and adjust a second angle of incidence that the second exit portion of the fabric makes with respect to the reference plane; And a third distance measuring sensor configured to detect a vertical movement distance of the second output roll, which is a distance that the second output roll moves in the vertical direction from the reference plane, is provided.

[0006] In exemplary embodiments, the invention further comprises a monitoring device configured to calculate the incident angle based on the vertical movement distance of the incident roll.

[0007] In exemplary embodiments, the monitoring device is configured to calculate a first contact point distance between a contact point between the contact point between the contact roll and the contact portion of the fabric and a contact point between the contact point between the first knife and the contact portion of the fabric based on the vertical movement distance of the contact roll, the horizontal distance along the horizontal direction between the center of the contact roll and the center of the first knife, the radius of the contact roll, and the radius of the first knife, and is configured to calculate the incident angle based on the first contact point distance, the radius of the contact roll, and the radius of the first knife.

[0008] In exemplary embodiments, when the input roll is lowered from the reference plane, the distance between the first contact points is calculated by the following equation (1):

[0009] ...Formula (1)

[0010] In the above equation (1), the L Id is the distance between the first contact points, and L IO is the horizontal distance between the center of the above-mentioned input roll and the center of the above-mentioned first knife, and h I is the vertical movement distance of the above-mentioned entrance roll, R is the radius of the first knife, and r I is the radius of the incident roll, and when the incident roll is lowered from the reference plane, the incident angle is calculated by the following equation (2).

[0011] ... Equation (2)

[0012] In the above equation (2), the above θ Id is characterized by the above incident angle.

[0013] In exemplary embodiments, when the incident roll rises from the reference plane, the distance between the first contact points is calculated by the following equation (3):

[0014] ...Formula (3)

[0015] In the above equation (3), the L Iu is the distance between the first contact points, and L IO is the horizontal distance between the center of the above-mentioned input roll and the center of the above-mentioned first knife, and h I is the vertical movement distance of the above-mentioned entrance roll, R is the radius of the first knife, and r I is the radius of the incident roll, and when the incident roll rises from the reference plane, the incident angle is calculated by the following equation (4).

[0016] ...Formula (4)

[0017] In the above equation (4), the above θ Iu is characterized by the above incident angle.

[0018] In exemplary embodiments, the invention further comprises a monitoring device configured to calculate the first exit angle based on the vertical movement distance of the first exit roll.

[0019] In exemplary embodiments, the monitoring device is configured to calculate a distance between a contact point between the first output roll and the first output portion of the fabric and a second contact point between the contact point between the first knife and the first output portion of the fabric based on the vertical movement distance of the first output roll, a horizontal distance along a horizontal direction between the center of the first output roll and the center of the first knife, a radius of the first output roll, and a radius of the first knife, and is configured to calculate the first output angle based on the distance between the second contact points, the radius of the first output roll, and the radius of the first knife.

[0020] In exemplary embodiments, when the first output roll is lowered from the reference surface, the distance between the second contact points is calculated by the following equation (5):

[0021] ... Equation (5)

[0022] In the above equation (5), the L Ud is the distance between the second contact points, and L UO is the horizontal distance between the center of the first output roll and the center of the first knife, and h U is the vertical movement distance of the first output roll, R is the radius of the first knife, and r U is the radius of the first output roll, and when the first output roll is lowered from the reference plane, the first output angle is calculated by the following equation (6).

[0023] ... Equation (6)

[0024] In the above equation (6), the above θ Ud is characterized by the above first exit angle.

[0025] In exemplary embodiments, when the first extrusion roll is raised from the reference surface, the distance between the second contact points is calculated by the following equation (7):

[0026] ... Equation (7)

[0027] In the above equation (7), the L Uu is the distance between the second contact points, and L UO is the horizontal distance between the center of the first output roll and the center of the first knife, and h U is the vertical movement distance of the first output roll, R is the radius of the first knife, and r U is the radius of the first output roll, and when the first output roll rises from the reference plane, the first output angle is calculated by the following equation (8).

[0028] ... Equation (8)

[0029] In the above equation (8), the above θ Uu is characterized by the above first exit angle.

[0030] In exemplary embodiments, the invention further comprises a monitoring device configured to calculate the second exit angle based on the vertical movement distance of the second exit roll.

[0031] In exemplary embodiments, the monitoring device is configured to calculate a distance between a third contact point between a contact point between the second output roll and the second output portion of the fabric and a contact point between the first knife and the second output portion of the fabric based on the vertical movement distance of the second output roll, a horizontal distance along a horizontal direction between a center of the second output roll and a center of the first knife, a radius of the second output roll, and a radius of the first knife, and is configured to calculate the second output angle based on the distance between the third contact points, the radius of the second output roll, and the radius of the first knife.

[0032] In exemplary embodiments, when the second extrusion roll is lowered from the reference surface, the distance between the third contact points is calculated by the following equation (9):

[0033] ... Equation (9)

[0034] In the above equation (9), the L Ld is the distance between the third contact points, and L LO is the horizontal distance between the center of the second output roll and the center of the first knife, and h L is the vertical movement distance of the second output roll, R is the radius of the first knife, and r L is the radius of the second output roll, and when the second output roll is lowered from the reference plane, the second output angle is calculated by the following equation (10).

[0035] ... Equation (10)

[0036] In the above equation (10), the above θ Ldis characterized by the second exit angle.

[0037] In exemplary embodiments, when the second extrusion roll rises from the reference surface, the distance between the third contact points is calculated by the following equation (11):

[0038] ... Equation (11)

[0039] In the above equation (11), the L Lu is the distance between the third contact points, and L LO is the horizontal distance between the center of the second output roll and the center of the first knife, and h L is the vertical movement distance of the second output roll, R is the radius of the first knife, and r L is the radius of the second output roll, and when the second output roll rises from the reference plane, the second output angle is calculated by the following equation (12).

[0040] ... Equation (12)

[0041] In the above equation (12), the above θ Lu is characterized by the second exit angle.

[0042] In exemplary embodiments, the input roll supports the upper surface of the input portion of the fabric, the first output roll supports the upper surface of the first output portion of the fabric, and the second output roll supports the bottom surface of the second output portion of the fabric.

[0043] In exemplary embodiments, the apparatus further comprises a monitoring device, wherein the monitoring device is configured to calculate the incident angle based on the vertical movement distance of the incident roll, the monitoring device is configured to calculate the first exit angle based on the vertical movement distance of the first exit roll, and the monitoring device is configured to calculate the second exit angle based on the vertical movement distance of the second exit roll.

[0044] According to exemplary embodiments of the present invention, the entry / exit angle of the fabric can be monitored in real time by utilizing the vertical movement distance of guide rolls (i.e., the entry roll, the first exit roll, and the second exit roll) configured to adjust the entry / exit angle of the fabric.

[0045] In addition, according to exemplary embodiments of the present invention, when theoretically deriving the entry / exit angle of the fabric using a trigonometric function, the entry / exit angle of the fabric is derived by considering the contact points between the fabric and the guide rolls (i.e., the entry roll, the first exit roll, and the second exit roll) and the contact points between the fabric and the knife, so that the entry / exit angle of the fabric can be accurately derived without theoretical error. Accordingly, the entry / exit angle of the fabric, which is a key factor in the slitting process, can be precisely monitored, and the reliability of products manufactured through the slitting process can be improved.

[0046] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0047] FIG. 1 is a perspective view showing a slit according to exemplary embodiments of the present invention.

[0048] FIG. 2 is a block diagram showing a partial configuration of a slitter according to exemplary embodiments of the present invention.

[0049] FIG. 3 is a schematic diagram showing a method for calculating an angle of incidence of an incident portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0050] FIG. 4 is a schematic diagram showing a portion of a slitter according to exemplary embodiments of the present invention.

[0051] FIG. 5 is a schematic diagram illustrating a method for calculating a first exit angle of a first exit portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0052] FIG. 6 is a schematic diagram illustrating a method for calculating a second exit angle of a second exit portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0053] FIG. 7 is a schematic diagram showing a method for calculating an angle of incidence of an incident portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0054] FIG. 8 is a schematic diagram illustrating a method for calculating a first exit angle of a first exit portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0055] FIG. 9 is a schematic diagram illustrating a method for calculating a second exit angle of a second exit portion of a fabric in a slitter according to exemplary embodiments of the present invention.

[0056] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0057] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0058] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0059] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0060] In the present disclosure, the vertical direction may refer to the Z direction, and the horizontal direction may refer to the X direction or the Y direction. The vertical position may refer to a position along the vertical direction, the vertical movement may refer to a movement along the vertical direction, the vertical movement distance may refer to a distance moved in the vertical direction, and the horizontal distance may refer to a distance along the horizontal direction.

[0061]

[0062] (Example 1)

[0063] Fig. 1 is a perspective view showing a slitter (10) according to exemplary embodiments of the present invention. Fig. 2 is a block diagram showing a partial configuration of a slitter (10) according to exemplary embodiments of the present invention.

[0064] Referring to FIGS. 1 and 2, a slitter (10) can perform a slitting process on a fabric (50). The slitter (10) can cut the fabric (50) in a direction parallel to the direction in which the fabric (50) is moving, thereby separating the fabric (50) into a plurality of segments. Through the slitting process, the plurality of segments of the fabric (50) are each cut to have a desired width.

[0065] The above fabric (50) may have a sheet shape. In exemplary embodiments, the fabric (50) may be an electrode fabric for manufacturing a secondary battery. The electrode fabric may include a substrate and an electrode slurry layer applied to at least one of both surfaces of the substrate. The substrate may serve as a current collector and may include, for example, copper or aluminum. The electrode slurry layer may include a positive electrode active material slurry or a negative electrode active material slurry.

[0066] In the slitter (10), the fabric (50) can move along a predetermined transport path. In the slitter (10), the fabric (50) can be configured to move along a predetermined transport path in a roll-to-roll manner. At the starting point of the transport path of the fabric (50), a supply roller that stores the fabric (50) wound in a roll shape can be arranged, and at the ending point of the transport path of the fabric (50), take-up rollers that take-up and store segments of the fabric (50) separated from each other by the slitting process can be arranged.

[0067] The slitter (10) may include a cutter (110), an input roll (120), a first output roll (130), a second output roll (140), a first distance measuring sensor (210), a second distance measuring sensor (220), a third distance measuring sensor (230), and a monitoring device (300).

[0068] The cutter (110) may be configured to cut the fabric (50) in a direction parallel to the direction in which the fabric (50) is moving. The cutter (110) may include a first knife (111) and a second knife (113) arranged in a vertical direction (Z direction). The first knife (111) and the second knife (113) may each be circular knives. When viewed in cross section, the profile of the outer edge of the first knife (111) and the profile of the outer edge of the second knife (113) may each be a circle having a constant diameter. The first knife (111) may be positioned below the fabric (50), and the second knife (113) may be positioned above the fabric (50).

[0069] The first knife (111) and the second knife (113) can each rotate about a rotation axis parallel to the width direction (e.g., Y direction) of the fabric (50). While the first knife (111) and the second knife (113) rotate, the fabric (50) passing through the gap between the first knife (111) and the second knife (113) can be cut. The cutter (110) can cut the fabric (50) to separate the fabric (50) into a first exit portion (53) and a second exit portion (55). In FIG. 1, the fabric (50) is separated into two segments by the cutter (110), but the present invention is not limited thereto, and the cutter (110) can include a plurality of knife sets arranged in the width direction (e.g., Y direction) of the fabric (50) and can separate the fabric (50) into three or more segments.

[0070] The input roll (120) can support the input portion (51) of the fabric (50) entering the cutter (110) and guide the movement of the input portion (51) of the fabric (50). The input roll (120) can be placed above the input portion (51) of the fabric (50) and can support the upper surface of the input portion (51) of the fabric (50). The input roll (120) can be configured to rotate around a rotational axis parallel to the width direction (e.g., Y direction) of the fabric (50). When viewed in cross section, the profile of the outer edge of the input roll (120) contacting the fabric (50) can be a circle having a constant diameter.

[0071] The input roll (120) is connected to an actuator and can be configured to move in a vertical direction (Z direction). The actuator can include a motor, a hydraulic cylinder, a pneumatic cylinder, or a combination thereof. The input roll (120) can move vertically while in contact with the fabric (50) to adjust the incident angle that the input portion (51) of the fabric (50) entering the cutter (110) forms with the reference plane (RS of FIG. 3). Here, the reference plane (RS) can be defined as any XY plane parallel to the vertical direction (Z direction) and can contact the top of the first knife (111). In addition, the incident angle can be defined as the angle that the portion of the input portion (51) of the fabric (50) extending between the input roll (120) and the cutter (110) forms with the reference plane (RS).

[0072] The first output roll (130) can support the first output portion (53) of the fabric (50) output from the cutter (110) and guide the movement of the first output portion (53) of the fabric (50). The first output roll (130) can be placed on the first output portion (53) of the fabric (50) and can support the upper surface of the first output portion (53) of the fabric (50). The first output roll (130) can be configured to rotate about a rotation axis parallel to the width direction (e.g., Y direction) of the fabric (50). When viewed in cross section, the profile of the outer edge of the first output roll (130) contacting the fabric (50) can be a circle having a constant diameter.

[0073] The first output roll (130) is connected to an actuator and can be configured to move in a vertical direction (Z direction). The actuator can include a motor, a hydraulic cylinder, a pneumatic cylinder, or a combination thereof. The first output roll (130) moves vertically while in contact with the first output portion (53) of the fabric (50), thereby adjusting a first output angle formed by the first output portion (53) of the fabric (50) with respect to the reference plane (RS). Here, the first output angle can be defined as an angle formed by a portion of the first output portion (53) of the fabric (50) extending between the first output roll (130) and the cutter (110) with respect to the reference plane (RS).

[0074] The second output roll (140) can support the second output portion (55) of the fabric (50) output from the cutter (110) and guide the movement of the second output portion (55) of the fabric (50). The second output roll (140) can be placed below the second output portion (55) of the fabric (50) and can support the bottom surface of the second output portion (55) of the fabric (50). The second output roll (140) can be configured to rotate around a rotational axis parallel to the width direction (e.g., Y direction) of the fabric (50). When viewed in cross section, the profile of the outer edge of the second output roll (140) contacting the fabric (50) can be a circle having a constant diameter.

[0075] The second output roll (140) is connected to an actuator and can be configured to move in a vertical direction (Z direction). The actuator can include a motor, a hydraulic cylinder, a pneumatic cylinder, or a combination thereof. The second output roll (140) moves vertically while in contact with the second output portion (55) of the fabric (50), thereby adjusting a second output angle formed by the second output portion (55) of the fabric (50) with respect to the reference plane (RS). Here, the second output angle can be defined as an angle formed by a portion of the second output portion (55) of the fabric (50) extending between the second output roll (140) and the cutter (110) with respect to the reference plane (RS).

[0076] The first distance measuring sensor (210) can detect the vertical position of the incident roll (120) and can detect the vertical movement distance of the incident roll (120). The first distance measuring sensor (210) can include a contact-type displacement sensor or a non-contact displacement sensor. In exemplary embodiments, when the reference position of the incident roll (120) is defined as the position where the lower end of the incident roll (120) contacts the reference surface (RS), the first distance measuring sensor (210) can detect and output the vertical movement distance that the incident roll (120) moves in the vertical direction (Z direction) from the reference position of the incident roll (120).

[0077] The second distance measuring sensor (220) can detect the vertical position of the first output roll (130) and can detect the vertical movement distance of the first output roll (130). The second distance measuring sensor (220) can include a contact displacement sensor or a non-contact displacement sensor. In exemplary embodiments, when the reference position of the first output roll (130) is defined as the position where the lower end of the first output roll (130) contacts the reference surface (RS), the second distance measuring sensor (220) can detect and output the vertical movement distance that the first output roll (130) moves in the vertical direction (Z direction) from the reference position of the first output roll (130).

[0078] The third distance measuring sensor (230) can detect the vertical position of the second output roll (140) and can detect the vertical movement distance of the second output roll (140). The third distance measuring sensor (230) can include a contact displacement sensor or a non-contact displacement sensor. In exemplary embodiments, when the reference position of the second output roll (140) is defined as the position where the lower end of the second output roll (140) contacts the reference surface (RS), the third distance measuring sensor (230) can detect and output the vertical movement distance that the second output roll (140) moves in the vertical direction (Z direction) from the reference position of the second output roll (140).

[0079] The monitoring device (300) receives data output from the first to third distance measuring sensors (210, 220, 230), and can calculate the incident angle of the incident portion (51) of the fabric (50), the first exit angle of the first exit portion (53) of the fabric (50), and the second exit angle of the second exit portion (55) of the fabric (50). The monitoring device (300) can provide the incident angle of the incident portion (51) of the fabric (50), the first exit angle of the first exit portion (53) of the fabric (50), and the second exit angle of the second exit portion (55) of the fabric (50) to an external worker in real time through the display unit. The monitoring device (300) can determine whether the incident angle of the incident portion (51) of the fabric (50), the first exit angle of the first exit portion (53) of the fabric (50), and the second exit angle of the second exit portion (55) of the fabric (50) are within a predetermined target value or target range.

[0080] The monitoring device (300) may include at least one memory device configured to store data, at least one processor configured to process data, and a control panel. For example, the memory device may include a random access memory (RAM) and / or a read only memory (ROM). The processor may include a central processing unit (CPU), a microprocessor unit (MPU), and / or a graphic processing unit (GPU). The monitoring device (300) may include a computer and / or a server.

[0081] The monitoring device (300) may include an incident angle calculation unit (311), a first incident angle calculation unit (312), a second incident angle calculation unit (313), and a storage unit (320).

[0082] The incident angle calculation unit (311) receives data on the vertical movement distance of the incident roll (120) from the first distance measuring sensor (210), and can calculate the incident angle of the incident portion (51) of the fabric (50) based on the vertical movement distance of the incident roll (120). The first exit angle calculation unit (312) receives data on the vertical movement distance of the first exit roll (130) from the second distance measuring sensor (220), and can calculate the first exit angle of the first exit portion (53) of the fabric (50) based on the vertical movement distance of the first exit roll (130). The second exit angle calculation unit (313) receives data on the vertical movement distance of the second exit roll (140) from the third distance measuring sensor (230), and can calculate the second exit angle of the second exit portion (55) of the fabric (50) based on the vertical movement distance of the second exit roll (140). The incident angle calculation unit (311), the first exit angle calculation unit (312), and the second exit angle calculation unit (313) may each include at least one processor configured to process data.

[0083] The storage unit (320) can store various data, such as data on the incident angle of the incident portion (51) of the fabric (50) calculated by the incident angle calculation unit (311), data on the first exit angle of the first exit portion (53) of the fabric (50) calculated by the first exit angle calculation unit (312), and data on the second exit angle of the second exit portion (55) of the fabric (50) calculated by the second exit angle calculation unit (313). The storage unit (320) can include a memory device.

[0084]

[0085] (Example 2)

[0086] Figure 3 shows the incidence angle (θ) of the incidence portion (51) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention. Id ) is a schematic diagram showing how to calculate it.

[0087] Hereinafter, referring to FIG. 3 together with FIG. 1 and FIG. 2, when the incident roll (120) is lowered from the reference plane (RS), the incident angle (θ) of the incident portion (51) of the fabric (50) Id ) is described. In Fig. 3, reference numeral "120i" indicates the reference position of the input roll (120).

[0088] First, the incident angle calculation unit (311) of the monitoring device (300) calculates the vertical movement distance (h) of the incident roll (120) transmitted from the first distance measuring sensor (210). I ), the first contact distance (L) between the contact point (P1) between the input roll (120) and the input portion (51) of the fabric (50) and the contact point (P2) between the first knife (111) and the input portion (51) of the fabric (50) Id ) can be calculated. When the circle formed by the outer edge of the input roll (120) and the circle formed by the outer edge of the first knife (111) have a common intangent line, the contact point (P1) between the input roll (120) and the input portion (51) of the fabric (50) and the contact point (P2) between the first knife (111) and the input portion (51) of the fabric (50) can be on the common intangent line. The vertical movement distance (h) of the input roll (120) I ) is a value output from the first distance measuring sensor (210), which is the distance that the incident roll (120) descends in the vertical direction (Z direction) from the reference position of the incident roll (120).

[0089] In exemplary embodiments, the incident angle calculation unit (311) calculates the vertical movement distance (h) of the incident roll (120). I ), horizontal distance (L) along the horizontal direction (X direction) between the center (C1) of the input roll (120) and the center (C0) of the first knife (111) IO ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111), the distance between the first contact points (L Id) is calculated. The center (C1) of the input roll (120) may refer to the center of the circle formed by the outer edge of the input roll (120) that contacts the fabric (50), and the center (C0) of the first knife (111) may refer to the center of the circle formed by the outer edge of the first knife (111) that contacts the fabric (50). The distance (L) between the first contact points Id ) can be calculated by the following equation (1).

[0090] ... Equation (1)

[0091] Vertical movement distance (h) of the input roll (120) I ) can be provided from the first distance measuring sensor (210). The horizontal distance (L) along the horizontal direction (X direction) between the center (C1) of the input roll (120) and the center (C0) of the first knife (111) IO ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0092] Next, the angle of incidence calculation unit (311) calculates the distance between the first contact points (L Id ), the incident angle (θ) of the incident portion (51) of the fabric (50) Id ) can be calculated. In exemplary embodiments, the incident angle calculation unit (311) calculates the distance between the first contact points (L Id ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111), the angle of incidence (θ) of the incident portion (51) of the fabric (50) Id ) can be calculated. When the incident roll (120) is lowered from the reference position, the incident angle (θ) of the incident part (51) of the fabric (50) Id ) can have negative values. The angle of incidence (θ Id ) can be calculated by the following equation (2).

[0093] ... Equation (2)

[0094] In the above equation (2), is θ in Fig. 3 I1 It can be an angle corresponding to, θ in Fig. 3 I2 It may be an angle corresponding to .

[0095]

[0096] FIG. 4 is a schematic diagram showing a portion of a slitter (10) according to exemplary embodiments of the present invention.

[0097] Referring to FIGS. 1 to 4, as a method for calculating an angle of incidence according to a comparative example, an angle formed by a straight line passing through one point (P1') among the four points of a circle formed by the outer edge of the incident roll (120) and one point (P2') among the four points of a circle formed by the outer edge of the first knife (111) is calculated with respect to a reference plane (RS), thereby calculating an angle of incidence (θ) of an incident portion (51) of a fabric (50). Id ') can be calculated. However, as shown in Fig. 4, the incident angle (θ) calculated by the incident angle calculation method according to the comparative example Id ') is the incident angle (θ) calculated by considering the contact point (P1) between the incident roll (120) and the incident portion (51) of the fabric (50) and the contact point (P2) between the first knife (111) and the incident portion (51) of the fabric (50). Id ) can be seen to be different.

[0098]

[0099] FIG. 5 shows the first exit angle (θ) of the first exit portion (53) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention. Uu ) is a schematic diagram showing how to calculate it.

[0100] Hereinafter, referring to FIG. 5 together with FIG. 1 and FIG. 2, when the first exit roll (130) rises from the reference plane (RS), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Uu ) is described. In Fig. 5, reference numeral “130i” indicates the reference position of the first output roll (130).

[0101] First, the first output angle calculation unit (312) of the monitoring device (300) calculates the vertical movement distance (h) of the first output roll (130) transmitted from the second distance measuring sensor (220). U ), the second contact distance (L) between the contact point (P3) between the first output roll (130) and the first output portion (53) of the fabric (50) and the contact point (P4) between the first knife (111) and the first output portion (53) of the fabric (50) Uu ) can be calculated. When the circle formed by the outer edge of the first output roll (130) and the circle formed by the outer edge of the first knife (111) have a common inner tangent line, the contact point (P3) between the first output roll (130) and the first output portion (53) of the fabric (50) and the contact point (P4) between the first knife (111) and the first output portion (53) of the fabric (50) can be on the common inner tangent line. The vertical movement distance (h) of the first output roll (130) U ) is a value output from the second distance measuring sensor (220), which is the distance that the first output roll (130) rises in the vertical direction (Z direction) from the reference position of the first output roll (130).

[0102] In exemplary embodiments, the first exit angle calculation unit (312) calculates the vertical movement distance (h) of the first exit roll (130). U ), the horizontal distance (L) along the horizontal direction (X direction) between the center (C2) of the first output roll (130) and the center (C0) of the first knife (111) UO ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111), the distance between the second contact points (L Uu ) is calculated. The center (C2) of the first output roll (130) may refer to the center of the circle formed by the outer edge of the first output roll (130) that contacts the fabric (50). The distance between the second contact points (L Uu ) can be calculated by the following equation (3).

[0103] ... Equation (3)

[0104] The vertical movement distance (h) of the first output roll (130) U ) can be provided from the second distance measuring sensor (220). The horizontal distance (L) along the horizontal direction (X direction) between the center (C2) of the first output roll (130) and the center (C0) of the first knife (111) UO ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0105] Next, the first exit angle calculation unit (312) calculates the distance between the second contact points (L Uu ), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Uu ) can be calculated. In exemplary embodiments, the first exit angle calculation unit (312) calculates the second contact distance (L Uu ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Uu ) can be calculated. When the first exit roll (130) rises from the reference position, the first exit angle (θ) of the first exit portion (53) of the fabric (50) Uu ) can have a positive value. The first emission angle (θ Uu ) can be calculated by the following equation (4).

[0106] ... Equation (4)

[0107] In the above equation (4), is θ of Fig. 5 U1 It can be an angle corresponding to, θ of Fig. 5 U2 It may be an angle corresponding to .

[0108]

[0109] Figure 6 shows the second exit angle (θ) of the second exit portion (55) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention. Ld) is a schematic diagram showing how to calculate it.

[0110] Hereinafter, referring to FIG. 6 together with FIG. 1 and FIG. 2, when the second exit roll (140) is lowered from the reference plane (RS), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Ld ) is described. In Fig. 6, reference numeral "140i" indicates the reference position of the second output roll (140).

[0111] First, the second output angle calculation unit (313) of the monitoring device (300) calculates the vertical movement distance (h) of the second output roll (140) transmitted from the third distance measuring sensor (230). L ), the third contact point distance (L) between the contact point (P5) between the second output roll (140) and the second output portion (55) of the fabric (50) and the contact point (P6) between the first knife (111) and the second output portion (55) of the fabric (50) Ld ) can be calculated. When the circle formed by the outer edge of the second output roll (140) and the circle formed by the outer edge of the first knife (111) have a common inner tangent line, the contact point (P5) between the second output roll (140) and the second output portion (55) of the fabric (50) and the contact point (P6) between the first knife (111) and the second output portion (55) of the fabric (50) can be on the common inner tangent line. The vertical movement distance (h) of the second output roll (140) L ) is the value output from the third distance measuring sensor (230), which is the distance that the second output roll (140) is lowered in the vertical direction (Z direction) from the reference position of the second output roll (140).

[0112] In exemplary embodiments, the second exit angle calculation unit (313) calculates the vertical movement distance (h) of the second exit roll (140). L ), the horizontal distance (L) along the horizontal direction (X direction) between the center (C3) of the second output roll (140) and the center (C0) of the first knife (111) LO ), the radius (r) of the second output roll (140) L) and the radius (R) of the first knife (111), the distance between the third contact points (L Ld ) is calculated. The center (C3) of the second output roll (140) may refer to the center of the circle formed by the outer edge of the second output roll (140) that contacts the fabric (50). The distance between the third contact points (L Ld ) can be calculated by the following equation (5).

[0113] ... Equation (5)

[0114] The vertical movement distance (h) of the second output roll (140) L ) can be provided from the third distance measuring sensor (230). The horizontal distance (L) along the horizontal direction (X direction) between the center (C3) of the second output roll (140) and the center (C0) of the first knife (111) LO ), the radius (r) of the second output roll (140) L ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0115] Next, the second exit angle calculation unit (313) calculates the distance between the third contact points (L Ld ), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Ld ) can be calculated. In exemplary embodiments, the second exit angle calculation unit (313) calculates the distance between the third contact points (L Ld ), the radius (r) of the second output roll (140) L ) and the radius (R) of the first knife (111), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Ld ) can be calculated. When the second exit roll (140) is lowered from the reference position, the second exit angle (θ) of the second exit portion (55) of the fabric (50) Ld ) can have negative values. The second emission angle (θ Ld ) can be calculated by the following equation (6).

[0116] ... Equation (6)

[0117] In the above equation (6), is θ of Fig. 6 L1 It can be an angle corresponding to, θ of Fig. 6 L2 It may be an angle corresponding to .

[0118]

[0119] Figure 7 shows the incidence angle (θ) of the incidence portion (51) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention. Iu ) is a schematic diagram showing how to calculate it.

[0120] Hereinafter, referring to FIG. 7 together with FIG. 1 and FIG. 2, when the incident roll (120) rises from the reference plane (RS), the incident angle (θ) of the incident portion (51) of the fabric (50) Iu ) is described.

[0121] First, the incident angle calculation unit (311) of the monitoring device (300) calculates the vertical movement distance (h) of the incident roll (120) transmitted from the first distance measuring sensor (210). I ), the first contact distance (L) between the contact point (P1) between the input roll (120) and the input portion (51) of the fabric (50) and the contact point (P2) between the first knife (111) and the input portion (51) of the fabric (50) Iu ) can be calculated. The vertical movement distance (h) of the input roll (120) I ) is a value output from the first distance measuring sensor (210), and is the distance that the incident roll (120) rises in the vertical direction (Z direction) from the reference position of the incident roll (120).

[0122] In exemplary embodiments, the incident angle calculation unit (311) calculates the vertical movement distance (h) of the incident roll (120). I ), horizontal distance (L) along the horizontal direction (X direction) between the center (C1) of the input roll (120) and the center (C0) of the first knife (111) IO ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111), the distance between the first contact points (L Iu) is calculated. The distance between the first contact points (L Iu ) can be calculated by the following equation (7).

[0123] ... Equation (7)

[0124] Vertical movement distance (h) of the input roll (120) I ) can be provided from the first distance measuring sensor (210). The horizontal distance (L) along the horizontal direction (X direction) between the center (C1) of the input roll (120) and the center (C0) of the first knife (111) IO ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0125] Next, the angle of incidence calculation unit (311) calculates the distance between the first contact points (L Iu ), the incident angle (θ) of the incident portion (51) of the fabric (50) Iu ) can be calculated. In exemplary embodiments, the incident angle calculation unit (311) calculates the distance between the first contact points (L Iu ), the radius (r) of the input roll (120) I ) and the radius (R) of the first knife (111), the angle of incidence (θ) of the incident portion (51) of the fabric (50) Iu ) can be calculated. When the incident roll (120) rises from the reference position, the incident angle (θ) of the incident portion (51) of the fabric (50) Iu ) can have positive values. The angle of incidence (θ Iu ) can be calculated by the following equation (8).

[0126] ... Equation (8)

[0127] In the above equation (8), is θ of Fig. 8 I1 It can be an angle corresponding to, θ of Fig. 8 I2 It may be an angle corresponding to .

[0128]

[0129] Figure 8 shows the first exit angle (θ) of the first exit portion (53) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention. Ud ) is a schematic diagram showing how to calculate it.

[0130] Hereinafter, referring to FIG. 8 together with FIG. 1 and FIG. 2, when the first exit roll (130) is lowered from the reference plane (RS), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Ud ) is described.

[0131] First, the first output angle calculation unit (312) of the monitoring device (300) calculates the vertical movement distance (h) of the first output roll (130) transmitted from the second distance measuring sensor (220). U ), the second contact distance (L) between the contact point (P3) between the first output roll (130) and the first output portion (53) of the fabric (50) and the contact point (P4) between the first knife (111) and the first output portion (53) of the fabric (50) Ud ) can be calculated. The vertical movement distance (h) of the first output roll (130) U ) is a value output from the second distance measuring sensor (220), which is the distance that the first output roll (130) is lowered in the vertical direction (Z direction) from the reference position of the first output roll (130).

[0132] In exemplary embodiments, the first exit angle calculation unit (312) calculates the vertical movement distance (h) of the first exit roll (130). U ), the horizontal distance (L) along the horizontal direction (X direction) between the center (C2) of the first output roll (130) and the center (C0) of the first knife (111) UO ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111), the distance between the second contact points (L Ud ) is calculated. The distance between the second contact points (L Ud ) can be calculated by the following equation (9).

[0133] ... Equation (9)

[0134] The vertical movement distance (h) of the first output roll (130) U ) can be provided from the second distance measuring sensor (220). The horizontal distance (L) along the horizontal direction (X direction) between the center (C2) of the first output roll (130) and the center (C0) of the first knife (111) UO ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0135] Next, the first exit angle calculation unit (312) calculates the distance between the second contact points (L Ud ), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Ud ) can be calculated. In exemplary embodiments, the first exit angle calculation unit (312) calculates the second contact distance (L Ud ), the radius (r) of the first output roll (130) U ) and the radius (R) of the first knife (111), the first exit angle (θ) of the first exit portion (53) of the fabric (50) Ud ) can be calculated. When the first exit roll (130) is lowered from the reference position, the first exit angle (θ) of the first exit portion (53) of the fabric (50) Ud ) can have negative values. The first emission angle (θ Ud ) can be calculated by the following equation (10).

[0136] ... Equation (10)

[0137] In the above equation (10), is θ of Fig. 8 U1 It can be an angle corresponding to, θ of Fig. 8 U2 It may be an angle corresponding to .

[0138]

[0139] FIG. 9 shows the second exit angle (θ) of the second exit portion (55) of the fabric (50) in the slitter (10) according to exemplary embodiments of the present invention.Lu ) is a schematic diagram showing how to calculate it.

[0140] Hereinafter, referring to FIG. 9 together with FIG. 1 and FIG. 2, when the second exit roll (140) rises from the reference plane (RS), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Lu ) is described.

[0141] First, the second output angle calculation unit (313) of the monitoring device (300) calculates the vertical movement distance (h) of the second output roll (140) transmitted from the third distance measuring sensor (230). L ), the third contact point distance (L) between the contact point (P5) between the second output roll (140) and the second output portion (55) of the fabric (50) and the contact point (P6) between the first knife (111) and the second output portion (55) of the fabric (50) Lu ) can be calculated. The vertical movement distance (h) of the second output roll (140) L ) is a value output from the third distance measuring sensor (230), which is the distance that the second output roll (140) rises in the vertical direction (Z direction) from the reference position of the second output roll (140).

[0142] In exemplary embodiments, the second exit angle calculation unit (313) calculates the vertical movement distance (h) of the second exit roll (140). L ), the horizontal distance (L) along the horizontal direction (X direction) between the center (C3) of the second output roll (140) and the center (C0) of the first knife (111) LO ), the radius (r) of the second output roll (140) L ) and the radius (R) of the first knife (111), the distance between the third contact points (L Lu ) is calculated. The distance between the third contact points (L Lu ) can be calculated by the following equation (11).

[0143] ... Equation (11)

[0144] The vertical movement distance (h) of the second output roll (140) L) can be provided from the third distance measuring sensor (230). The horizontal distance (L) along the horizontal direction (X direction) between the center (C3) of the second output roll (140) and the center (C0) of the first knife (111) LO ), the radius (r) of the second output roll (140) L ) and the radius (R) of the first knife (111) can be provided in the storage unit (320).

[0145] Next, the second exit angle calculation unit (313) calculates the distance between the third contact points (L Lu ), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Lu ) can be calculated. In exemplary embodiments, the second exit angle calculation unit (313) calculates the distance between the third contact points (L Lu ), the radius (r) of the second output roll (140) L ) and the radius (R) of the first knife (111), the second exit angle (θ) of the second exit portion (55) of the fabric (50) Lu ) can be calculated. When the second exit roll (140) rises from the reference position, the second exit angle (θ) of the second exit portion (55) of the fabric (50) Lu ) can have a positive value. The second emission angle (θ Lu ) can be calculated by the following equation (12).

[0146] ... Equation (12)

[0147] In the above equation (12), is θ of Fig. 9 L1 It can be an angle corresponding to, θ of Fig. 9 L2 It may be an angle corresponding to .

[0148]

[0149] In the slitting process, the entry / exit angle of the fabric (50) is a major factor affecting the quality of the cut surface of the fabric (50) and the occurrence of defects such as burrs. Therefore, the entry / exit angle of the fabric (50) is measured, and the vertical position of the guide roll guiding the fabric (50) is controlled so that the entry / exit angle of the fabric (50) has a target value. In general, in the slitting process, as a method for detecting the entry / exit angle of the fabric (50), there is a method using an angle sensor. In the case of the method using an angle sensor, the angle sensor is placed on the fabric (50) and the entry / exit angle of the fabric (50) is measured, but the fabric (50) sags due to the weight of the angle sensor, making it difficult to accurately measure the angle, and angle measurement is only possible when the movement of the fabric (50) is stopped, making it impossible to measure the entry / exit angle of the fabric (50) in real time while performing the slitting process.

[0150] According to exemplary embodiments of the present invention, the entry / exit angle of the fabric (50) can be monitored in real time by utilizing the vertical movement distance of the guide rolls (i.e., the entry / exit roll (120), the first exit roll (130), and the second exit roll (140)) configured to adjust the entry / exit angle of the fabric (50).

[0151] In addition, according to exemplary embodiments of the present invention, when theoretically deriving the entrance / exit angle of the fabric (50) using a trigonometric function, the entrance / exit angle of the fabric (50) is derived by considering the contact points between the fabric (50) and the guide rolls (i.e., the entrance roll (120), the first exit roll (130), and the second exit roll (140)) and the contact points between the fabric (50) and the knife, so that the entrance / exit angle of the fabric (50) can be accurately derived without theoretical error. Accordingly, the entrance / exit angle of the fabric (50), which is a major factor in the slitting process, can be precisely monitored, and the reliability of a product manufactured through the slitting process can be improved.

[0152]

[0153] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

1. A cutter comprising a first knife and a second knife arranged in a vertical direction, and configured to cut a fabric passing between the first knife and the second knife to separate the fabric into a first exit portion and a second exit portion; An input roll configured to move in the vertical direction and adjust an angle of incidence formed by the input portion of the fabric entering the cutter with respect to a reference surface; A first distance measuring sensor configured to detect a vertical movement distance of the incident roll, which is a distance that the incident roll moves in the vertical direction from the reference surface; A first output roll configured to move in the vertical direction and adjust a first output angle formed by the first output portion of the fabric with respect to the reference surface; A second distance measuring sensor configured to detect a vertical movement distance of the first output roll, which is a distance that the first output roll moves in the vertical direction from the reference surface; A second output roll configured to move in the vertical direction and adjust a second output angle formed by the second output portion of the fabric with respect to the reference surface; and A third distance measuring sensor configured to detect a vertical movement distance of the second output roll, which is a distance that the second output roll moves in the vertical direction from the reference surface; Slitter containing.

2. In paragraph 1, A monitoring device configured to calculate the incident angle based on the vertical movement distance of the incident roll; A slitter characterized by further including:

3. In paragraph 2, The above monitoring device, Based on the vertical movement distance of the input roll, the horizontal distance along the horizontal direction between the center of the input roll and the center of the first knife, the radius of the input roll, and the radius of the first knife, it is configured to calculate the first contact point distance between the contact point between the input roll and the input portion of the fabric and the contact point between the first knife and the input portion of the fabric. A slitter characterized in that it is configured to calculate the incident angle based on the distance between the first contact points, the radius of the incident roll, and the radius of the first knife.

4. In paragraph 3, When the above-mentioned entrance roll descends from the above-mentioned reference plane, the distance between the first contact points is calculated by the following equation (1), ... Equation (1) In the above equation (1), the L Id is the distance between the first contact points, and L IO is the horizontal distance between the center of the above-mentioned input roll and the center of the above-mentioned first knife, and h I is the vertical movement distance of the above-mentioned entrance roll, R is the radius of the first knife, and r I is the radius of the above-mentioned entrance roll, When the above incident roll descends from the above reference plane, the incident angle is calculated by the following equation (2), ... Equation (2) In the above equation (2), the above θ Id A slitter characterized by the above-mentioned angle of incidence.

5. In paragraph 3, When the above-mentioned entrance roll rises from the above-mentioned reference plane, the distance between the first contact points is calculated by the following equation (3), ... Equation (3) In the above equation (3), the L Iu is the distance between the first contact points, and L IO is the horizontal distance between the center of the above-mentioned input roll and the center of the above-mentioned first knife, and h I is the vertical movement distance of the above-mentioned entrance roll, R is the radius of the first knife, and r I is the radius of the above-mentioned entrance roll, When the above incident roll rises from the above reference plane, the incident angle is calculated by the following equation (4), ... Equation (4) In the above equation (4), the above θ Iu A slitter characterized by the above-mentioned angle of incidence.

6. In paragraph 1, A monitoring device configured to calculate the first exit angle based on the vertical movement distance of the first exit roll; A slitter characterized by further including:

7. In paragraph 6, The above monitoring device, It is configured to calculate a distance between a contact point between the first output roll and the first output portion of the fabric and a second contact point between the contact point between the first knife and the first output portion of the fabric based on the vertical movement distance of the first output roll, the horizontal distance along the horizontal direction between the center of the first output roll and the center of the first knife, the radius of the first output roll, and the radius of the first knife, A slitter characterized in that it is configured to calculate the first exit angle based on the distance between the second contact points, the radius of the first exit roll, and the radius of the first knife.

8. In paragraph 7, When the first output roll is lowered from the reference surface, the distance between the second contact points is calculated by the following equation (5). ... Equation (5) In the above equation (5), the L Ud is the distance between the second contact points, and L UO is the horizontal distance between the center of the first output roll and the center of the first knife, and h U is the vertical movement distance of the first output roll, R is the radius of the first knife, and r U is the radius of the first output roll, When the first exit roll is lowered from the reference plane, the first exit angle is calculated by the following equation (6). ... Equation (6) In the above equation (6), the above θ Ud A slitter characterized by the above first exit angle.

9. In paragraph 7, When the first extrusion roll rises from the reference surface, the distance between the second contact points is calculated by the following equation (7). ... Equation (7) In the above equation (7), the L Uu is the distance between the second contact points, and L UO is the horizontal distance between the center of the first output roll and the center of the first knife, and h U is the vertical movement distance of the first output roll, R is the radius of the first knife, and r U is the radius of the first output roll, When the first exit roll rises from the reference surface, the first exit angle is calculated by the following equation (8): ... Equation (8) In the above equation (8), the above θ Uu A slitter characterized by the above first exit angle.

10. In paragraph 1, A monitoring device configured to calculate the second exit angle based on the vertical movement distance of the second exit roll; A slitter characterized by further including:

11. In paragraph 10, The above monitoring device, It is configured to calculate a third contact distance between the contact point between the second output roll and the second output portion of the fabric and the contact point between the first knife and the second output portion of the fabric based on the vertical movement distance of the second output roll, the horizontal distance along the horizontal direction between the center of the second output roll and the center of the first knife, the radius of the second output roll, and the radius of the first knife, A slitter characterized in that it is configured to calculate the second exit angle based on the distance between the third contact points, the radius of the second exit roll, and the radius of the first knife.

12. In paragraph 11, When the second extrusion roll is lowered from the reference surface, the distance between the third contact points is calculated by the following equation (9). ... Equation (9) In the above equation (9), the L Ld is the distance between the third contact points, and L LO is the horizontal distance between the center of the second output roll and the center of the first knife, and h L is the vertical movement distance of the second output roll, R is the radius of the first knife, and r L is the radius of the second output roll, When the second exit roll is lowered from the reference plane, the second exit angle is calculated by the following equation (10). ... Equation (10) In the above equation (10), the above θ Ld A slitter characterized by the second exit angle.

13. In paragraph 11, When the second extrusion roll rises from the reference surface, the distance between the third contact points is calculated by the following equation (11). ... Equation (11) In the above equation (11), the L Lu is the distance between the third contact points, and L LO is the horizontal distance between the center of the second output roll and the center of the first knife, and h L is the vertical movement distance of the second output roll, R is the radius of the first knife, and r L is the radius of the second output roll, When the second exit roll rises from the reference surface, the second exit angle is calculated by the following equation (12): ... Equation (12) In the above equation (12), the above θ Lu A slitter characterized by the second exit angle.

14. In paragraph 1, The above-mentioned entrance roll supports the upper surface of the entrance portion of the above-mentioned fabric, The above first output roll supports the upper surface of the above first output portion of the above fabric, A slitter characterized in that the second output roll supports the bottom surface of the second output section of the fabric.

15. In paragraph 14, Including more monitoring devices, The above monitoring device, It is configured to calculate the incident angle based on the vertical movement distance of the incident roll, It is configured to calculate the first exit angle based on the vertical movement distance of the first exit roll, A slitter characterized in that it is configured to calculate the second exit angle based on the vertical movement distance of the second exit roll.

Images