Pouch roll change system

Abstract

A pouch roll replacement system according to one embodiment of the present invention includes a conveying unit that conveys a replacement pouch roll and is capable of adjusting the height of the central axis of the replacement pouch roll, a replacement chucking unit that is provided to chuck the replacement pouch roll conveyed through the conveying unit and has a predetermined chucking height, an unwinder chucking unit in which a traveling pouch roll is installed, a measuring unit that measures the distance to the replacement pouch roll mounted on the conveying unit before conveying the replacement pouch roll to the replacement chucking unit, and a control unit that controls the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit is adjusted based on measurement information of the measuring unit and the chucking height of the replacement chucking unit.

Description

[Technical field]

[0001] The present invention relates to a pouch roll replacement system and a pouch roll position correction method using the same, and more particularly, to a pouch roll replacement system and a pouch roll position correction method capable of matching the height of the central axis of a replacement pouch roll before transportation to the chucking heights of a replacement chucking section and an unwinder chucking section.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0072001 dated June 14, 2022, and all contents disclosed in the documents of that Korean patent application are incorporated herein by reference. [Background technology]

[0003] Rechargeable lithium secondary batteries are also used as energy sources for electric vehicles and hybrid electric vehicles, which are presented as alternatives to existing gasoline and diesel vehicles that cause air pollution.

[0004] A lithium secondary battery is formed by stacking a positive electrode and a negative electrode with a separator interposed therebetween, and can be repeatedly charged and discharged while lithium ions move between the positive electrode and the negative electrode.

[0005] In the case of pouch-type secondary batteries, an electrode assembly in which a positive electrode, a separator, and a negative electrode are cross-laminated is manufactured, and then the electrode assembly is placed in a pouch. In other words, the pouch is used as a case that forms the exterior of the secondary battery.

[0006] In the secondary battery manufacturing process, pouches are supplied in a roll-to-roll manner, but when a roll of pouches is exhausted, workers stop the equipment, connect the end of the pouch on the current pouch roll to the end of the pouch on a new pouch roll with tape, and then restart the equipment.

[0007] The pouch roll is chucked by an unwinder, and the pouches wound around the pouch roll are unwound by the unwinder and supplied to the battery manufacturing process.

[0008] Meanwhile, when the roll diameter of the replacement pouch roll supplied to the unwinder changes, the chucking height of the pouch roll may be changed, and conventionally, an operator manually adjusted the standby height of the replacement pouch roll to the chucking height.

[0009] Generally, a pouch roll weighs more than 200 kg, making it difficult to transport, and there is a risk of a safety accident occurring if the pouch roll falls.

[0010] Furthermore, in the past, the equipment had to be stopped when replacing the pouch roll, and frequent replacement work created a workload for workers. Summary of the Invention [Problem to be solved by the invention]

[0011] An object of the present invention is to provide a pouch roll replacement system capable of adjusting the chucking height of a replacement pouch roll according to the diameter of the replacement pouch roll, and a pouch roll position correction method using the same.

[0012] Another object of the present invention is to provide a pouch roll replacement system and a pouch roll position correction method using the same, which can adjust the height of the central axis of a replacement pouch roll before transportation to the chucking height of the replacement chucking section and the unwinder chucking section even if the roll diameter of each replacement pouch roll is different. [Means for solving the problem]

[0013] In order to solve the above problems, a pouch roll replacement system according to one embodiment of the present invention includes a conveying unit that conveys a replacement pouch roll and is capable of adjusting the height of the central axis of the replacement pouch roll, a replacement chucking unit that is provided to chuck the replacement pouch roll conveyed through the conveying unit and has a predetermined chucking height, an unwinder chucking unit in which a traveling pouch roll is installed, a measuring unit that measures the distance to the replacement pouch roll mounted on the conveying unit before conveying the replacement pouch roll to the replacement chucking unit, and a control unit that controls the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit is adjusted based on measurement information of the measuring unit and the chucking height of the replacement chucking unit.

[0014] In addition, the control unit may be configured to adjust the height of the central axis of the replacement pouch roll mounted on the conveying unit, and then control the operation of the conveying unit so that the replacement pouch roll is conveyed to the replacement chucking unit.

[0015] In addition, the control unit may be configured to calculate the diameter of the replacement pouch roll based on the measurement information, and to calculate the difference between the chucking height of the replacement chucking unit and the height of the central axis of the replacement pouch roll mounted on the conveying unit based on the diameter of the replacement pouch roll.

[0016] In addition, the control unit can calculate a difference between the chucking height of the replacement chucking unit and the height of the central axis of the replacement pouch roll mounted on the conveying unit as a height correction value, and control the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit is adjusted by the height correction value.

[0017] In addition, the control unit can adjust the height of the central axis of the replacement pouch roll mounted on the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit matches the chucking height of the replacement chucking unit.

[0018] Also, the unwinder chucking portion may have the same chucking height as the replacement chucking portion, and the transport portion may be configured to transport the replacement pouch roll from the replacement chucking portion to the unwinder chucking portion.

[0019] In addition, the transport unit may include a transport rail extending through the replacement chucking unit to guide the transport of the replacement pouch roll to the unwinder chucking unit, a mounting member on which the replacement pouch roll is mounted, and a shuttle movably disposed along the transport rail and a height adjustment unit for adjusting the height of the mounting member.

[0020] The shuttle may be provided to be capable of reciprocating along the transport rail, and may be provided to move to the unwinder chucking unit when the running pouch roll is replaced with a replacement pouch roll, and to move from the unwinder chucking unit to a measuring unit after the replacement pouch roll is chucked in the unwinder chucking unit.

[0021] Additionally, the mounting member may be curved with a predetermined curvature.

[0022] The measuring unit may also include a distance sensor that measures the distance to the replacement pouch roll attached to the conveying unit.

[0023] The distance sensor may also be an ultrasonic sensor.

[0024] In addition, the pouch roll replacement system may further include a pouch connection unit that grips an end of a pouch wound on the replacement pouch roll chucked in the replacement chucking unit and then transfers the end of the pouch to the unwinder chucking unit side.

[0025] In addition, the pouch connection unit may include a guide bar extending from an upper portion of the replacement chucking unit to an upper portion of the unwinder chucking unit, and a gripper movably installed along the guide bar, gripping an end of a pouch wound on the replacement pouch roll, and moving from the replacement chucking unit toward the unwinder chucking unit.

[0026] In addition, when the end of the pouch is gripped through the pouch connecting part, the control part can cause the replacement chucking part to release the chuck of the replacement pouch roll, and then transport the replacement pouch roll to the unwinder chucking part through the transporting part.

[0027] Also, the pouch roll replacement system may further include a roll core recovery unit that recovers the roll core of the traveling pouch roll that has been released from the unwinder chucking unit. Effect of the Invention

[0028] As described above, the pouch roll replacement system and the pouch roll position correction method using the same according to an embodiment of the present invention have the following advantages.

[0029] The roll diameter of the replacement pouch roll mounted on the conveying section can be measured, and the height of the central axis of the replacement pouch roll mounted on the conveying section can be adjusted to the chucking height of the replacement chucking section and the unwinder chucking section before transporting the replacement pouches to the replacement chucking section.

[0030] In addition, the position (height) of the replacement pouch roll mounted on the transport section can be automatically corrected so that the height of the central axis of the replacement pouch roll matches the chucking height of the running pouch roll.

[0031] In addition, even if the roll diameter differs for each replacement pouch roll, the roll diameter can be measured for each replacement pouch roll mounted on the conveying section, and the height of the replacement pouch roll can be automatically corrected so that the height of the central axis of the replacement pouch roll matches the height of the central axis of the running pouch roll, and the replacement pouch roll can be automatically supplied to the replacement chucking section and the unwinder chucking section. [Brief description of the drawings]

[0032] [Figure 1] 1 is a schematic diagram illustrating a side layout view of a pouch roll replacement system according to one embodiment of the present invention. [Diagram 2] 1 is a schematic diagram illustrating a plan layout of a pouch roll replacement system according to one embodiment of the present invention. [Diagram 3] 1 is a schematic diagram illustrating a configuration of a pouch roll replacement system according to an embodiment of the present invention. [Figure 4] 4 is a diagram illustrating a process of correcting the height of a replacement pouch roll in one embodiment of the present invention. [Diagram 5] 1 is a diagram illustrating an operating state of a conveying unit in a pouch roll replacement system according to an embodiment of the present invention. [Figure 6] 1 is a diagram illustrating an operating state of a conveying unit in a pouch roll replacement system according to an embodiment of the present invention. [Figure 7] 1 is a diagram illustrating an operating state of a conveying unit in a pouch roll replacement system according to an embodiment of the present invention. [Figure 8] 1 is a diagram illustrating an operating state of a conveying unit in a pouch roll replacement system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, a pouch roll replacement system and a pouch roll position correction method using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0034] In addition, regardless of the drawing symbols, identical or corresponding components will be given the same or similar reference numbers, and duplicate descriptions thereof will be omitted, and the size and shape of each component illustrated may be exaggerated or reduced for the convenience of explanation.

[0035] FIG. 1 is a schematic side layout view of a pouch roll replacement system according to an embodiment of the present invention, and FIG. 2 is a schematic plan layout view of the pouch roll replacement system according to an embodiment of the present invention.

[0036] The pouch roll replacement system 100 according to one embodiment of the present invention includes an unwinder chucking unit 130, a replacement chucking unit 140, a conveying unit 150, a measuring unit 160, and a control unit 190.

[0037] 1 and 2, the conveying unit 150 is provided to convey the replacement pouch roll 120 along a conveying direction (M, the x-axis direction in FIG. 1). The conveying unit 150 conveys the replacement pouch roll 120 to the replacement chucking unit 140. In addition, when chucking and dechucking are performed in the replacement chucking unit 140, the conveying unit 150 conveys the dechucking replacement pouch roll 120 to the unwinder chucking unit 130.

[0038] 2, the y-axis direction indicates the chucking and unchucking direction performed by the chucking units 130 and 140, and the y-axis direction may be perpendicular to the conveying direction M.

[0039] The unwinder chucking unit 130 chucks the running pouch roll and the replacement pouch roll, and unwinds the pouches wound around the chucked pouch roll, thereby supplying the pouches to the battery manufacturing process.

[0040] In this document, the term "traveling pouch roll 110" refers to a pouch roll that is chucked by the unwinder chucking unit 130 to supply pouches 115 to a battery manufacturing process. Also, the term "replacement pouch roll 120" refers to a new pouch roll that is chucked by the unwinder chucking unit 130 when the use of the traveling pouch roll 110 chucked by the unwinder chucking unit 130 is completed.

[0041] In addition, the running pouch roll 110 and the replacement pouch roll 120 each include a roll core and pouches 115, 125 wound around the roll core, and each pouch roll 110, 120 may have a cylindrical shape. At this time, the roll core has a central axis, and the running and replacement pouch rolls 110, 120 have their central axes chucked by the respective chucking units 130, 140. At this time, each chucking unit 130, 140 has a predetermined chucking height, and the chucking height may be a height (z-axis direction in FIG. 1) based on the bottom surface of the installation space in which the chucking unit is installed.

[0042] In addition, the unwinder chucking unit 130 chucks the replacement pouch roll 120 mounted on the conveying unit 150, and during chucking, the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 must be the same as the chucking height of the unwinder chucking unit 130. In this case, the height of the central axis of the replacement pouch roll 120 may be a height (z-axis direction in FIG. 1) based on the bottom surface of the installation space in which the conveying unit 150 is installed.

[0043] If the roll diameter of each newly supplied replacement pouch roll 120 is different, the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 will change. At this time, since the unwinder chucking unit 130 has a fixed chucking height, the height of the central axis of the replacement pouch roll 120 must be adjusted to be the same as the chucking height of the unwinder chucking unit 130 before chucking.

[0044] In addition, before the replacement pouch roll 120 is transported to the unwinder chucking unit 130, the replacement chucking unit 140 is provided to chuck the replacement pouch roll 120. At this time, the replacement chucking unit 140 has a predetermined chucking height, which may be a height based on the bottom surface of the installation space in which the chucking unit 140 is installed.

[0045] The replacement chucking unit 140 chucks the replacement pouch roll 120 mounted on the conveying unit 150, and during chucking, the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 must be the same as the chucking height of the replacement chucking unit 140. As described above, the height of the central axis of the replacement pouch roll 120 may be based on the bottom surface of the installation space in which the conveying unit 150 is installed.

[0046] In a battery manufacturing process, if the roll diameter of each newly supplied replacement pouch roll 120 is different, the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 will change. At this time, since the replacement chucking unit 140 has a fixed chucking height, the height of the central axis of the replacement pouch roll 120 must be adjusted to be the same as the chucking height of the replacement chucking unit 140 before chucking.

[0047] Referring to FIG. 1, when the replacement pouch 120 is chucked in the replacement chucking unit 140, an operation is performed to connect the end of the pouch 125 wound around the replacement pouch roll 120 to the end of the pouch 115 being supplied to the battery manufacturing process.

[0048] FIG. 3 is a schematic diagram of a pouch roll replacement system according to one embodiment of the present invention, and FIG. 4 is a diagram for explaining a process of correcting the height of a replacement pouch roll in one embodiment of the present invention.

[0049] A pouch roll replacement system 100 according to one embodiment of the present invention can automatically correct the height h1 of the replacement pouch roll 120 so that the height of the central axis of the replacement pouch roll 120 matches the chucking height of the replacement chucking unit 140 and the height of the central axis of the running pouch roll 110 chucked to the unwinder chucking unit 130.

[0050] Also, in this document, the chucking height of the replacement chucking unit 140 may be set to be the same as the chucking height h0 of the unwinder chucking unit 130. That is, the unwinder chucking unit 130 may have the same chucking height as the replacement chucking unit 140, and the conveying unit 150 may be configured to convey the replacement pouch roll 120 from the replacement chucking unit 140 to the unwinder chucking unit 130.

[0051] Also, in this document, the running pouch roll 110 and the replacement pouch roll 120 can be aluminum (AL) pouch rolls used in a packaging (PKG) process.

[0052] A pouch roll replacement system 100 according to one embodiment of the present invention includes a conveying unit 150 that conveys a replacement pouch roll 120 and is capable of adjusting the height h1 of the central axis of the replacement pouch roll 120, and a replacement chucking unit 140 that is configured to chuck the replacement pouch roll 120 conveyed through the conveying unit 150 and has a predetermined chucking height.

[0053] In addition, the pouch roll replacement system 100 includes an unwinder chucking unit 130 in which a running pouch roll 110 is installed, a measuring unit 160 that measures the distance to the replacement pouch roll 120 mounted on the conveying unit 150 before conveying the replacement pouch roll 120 to the replacement chucking unit 140, and a control unit 190 that controls the conveying unit 150 so that the height h1 of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 is adjusted based on the measurement information of the measuring unit 160 and the chucking height of the replacement chucking unit 140.

[0054] In addition, the pouch roll replacement system 100 may include a pouch connecting unit 180 that grips the end of a pouch wound on the replacement pouch roll 120 chucked in the replacement chucking unit 140 and then transfers the end of the pouch to the unwinder chucking unit 130.

[0055] In addition, when the end of the pouch is gripped through the pouch connecting unit 180, the control unit 190 can control the replacement chucking unit 140 to release the chuck of the replacement pouch roll 120, and then transport the replacement pouch 120 to the unwinder chucking unit 130 through the transport unit 150.

[0056] In addition, the pouch roll replacement system 100 may include a roll core recovery unit 170 that recovers the roll core of the traveling pouch roll 110 that has been released from the unwinder chucking unit 130 .

[0057] The control unit 190 controls the operations of the unwinder chucking unit 130, the replacement chucking unit 140, the measuring unit 160 and the pouch connecting unit 180.

[0058] In addition, the control unit 190 can adjust the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150, and then control the operation of the conveying unit 150 so that the replacement pouch roll 120 is conveyed to the replacement chucking unit 140.

[0059] In addition, the control unit 190 may be configured to calculate the diameter of the replacement pouch roll 120 based on the measurement information of the measuring unit, and to calculate the difference between the chucking height of the replacement chucking unit 140 and the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 based on the diameter of the replacement pouch roll 120.

[0060] In addition, the control unit 190 can calculate the difference between the chucking height of the replacement chucking unit 140 and the height of the central axis of the replacement pouch roll mounted on the conveying unit 150 as a height correction value, and control the conveying unit 150 so that the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 is adjusted only to the height correction value.

[0061] In addition, the control unit 190 can adjust the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 so that the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 matches the chucking height of the replacement chucking unit.

[0062] In addition, the measuring unit 160 may include a distance sensor for measuring the distance to the replacement pouch roll 120 mounted on the conveying unit 150, and the distance sensor may be an ultrasonic sensor.

[0063] Referring to FIG. 4, the measuring unit 160 may be configured to measure the distance between the replacement pouch roll 120 mounted on the conveying unit 150 and the replacement pouch roll 120 before the replacement pouch roll 120 is conveyed to the replacement chucking unit 140.

[0064] Also, the measuring unit 160 is installed to measure the distance to the replacement pouch roll 120 at a reference position (also called a "transport standby position") of the transporting unit 150. At this time, distance information according to the diameter of the replacement pouch roll 120 may be pre-stored in the control unit 190, the measuring unit 160 measures the distance to the replacement pouch roll 120, and the control unit 190 can calculate the diameter of the replacement pouch roll 120 by comparing the measured distance with the pre-stored distance information.

[0065] In addition, the control unit 190 can calculate the height h1 of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 based on height information of the conveying unit 150 and diameter information of the replacement pouch roll 120 at the reference position.

[0066] In addition, the control unit 190 stores the chucking heights of the replacement chucking unit 140 and the unwinder chucking unit 130, and the control unit 190 adjusts the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 so that the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 matches the chucking height of the replacement chucking unit.

[0067] 5 to 7 are views illustrating an operation state of the conveying unit 150 in the pouch roll replacement system according to an embodiment of the present invention.

[0068] The pouch roll replacement system 100 according to one embodiment of the present invention includes an unwinder chucking unit 130, a replacement chucking unit 140, a transport unit 150, a measuring unit 160, a roll core recovery unit 170, a pouch connecting unit 180, and a control unit 190.

[0069] The unwinder chucking unit 130 is installed in an unwinder for a secondary battery manufacturing process. The traveling pouch roll 110 is rotatably installed in the unwinder chucking unit 130 so that the pouches 115 wound around the traveling pouch roll 110 can be unwound.

[0070] The replacement chucking unit 140 is a device that chucks the replacement pouch roll 120. In this embodiment, the replacement pouch roll 120 is transported through the transport unit 150 to the replacement chucking unit 140 and the unwinder chucking unit 130 in this order.

[0071] In addition, the replacement chucking unit 140 may have the same chucking height as the unwinder chucking unit 130 on the transport path (M, x-axis direction) of the transport unit 150 and may be arranged in line with the unwinder chucking unit 130.

[0072] The conveying unit 150 conveys the replacement pouch roll 120 to the replacement chucking unit 140 and the unwinder chucking unit 130 in sequence. The conveying unit 150 includes a conveying rail 151, a shuttle 153, and a height adjusting unit 155.

[0073] Specifically, the conveying unit 150 may include a conveying rail 151 extending through the replacement chucking unit 140 to guide the conveying of the replacement pouch roll 120 to the unwinder chucking unit 130, a mounting member 154 on which the replacement pouch roll 120 is mounted, and a shuttle 153 movably arranged along the conveying rail 151, and a height adjustment unit 155 for adjusting the height of the mounting member 154.

[0074] In addition, the transport rail 151 forms a transport path (x-axis direction) that guides the transport of the replacement pouch roll 120 to the unwinder chucking unit 130. A shuttle 153 is installed on the transport rail 151 so as to be capable of reciprocating motion.

[0075] The shuttle 153 is installed so as to be movable back and forth along the transport rail 151. The shuttle 153 is moved from the transport standby position P0 of the transport unit 150 to the unwinder chucking unit 130 when the running pouch roll 110 is replaced with the replacement pouch roll 120.

[0076] Then, when the replacement pouch roll 120 is chucked by the unwinder chucking unit 130, the shuttle 153 is operated to return from the unwinder chucking unit 130 to the transport standby position P0.

[0077] The shuttle 153 is provided with a mounting member 154. The replacement pouch roll 120 is mounted on the mounting member 154. The mounting member 154 may have a curved shape with a predetermined curvature in order to stably support the replacement pouch roll 120, for example, the mounting member 154 may have an arc-shaped cross section.

[0078] In addition, a height adjustment unit 155 is coupled to the mounting member 154. The height adjustment unit 155 is installed on the shuttle 153 and serves to adjust the height of the mounting member 154. The height adjustment unit 155 may include a servo motor.

[0079] The operation of the height adjusting unit 155 is controlled by the control unit 190. The height adjusting unit 155 can adjust the height of the central axis of the replacement pouch roll 120 along the height direction (z-axis direction shown in FIG. 1) by a height correction value Δh calculated by the control unit 190.

[0080] In addition, the measuring unit 160 measures the distance to the replacement pouch roll 120 at the transport standby position P0. The measuring unit 160 includes a distance sensor that measures the vertical distance to the replacement pouch roll 120 attached to the transport unit 150 at the transport standby position P0. An ultrasonic sensor may be used as the distance sensor.

[0081] In this embodiment, the transport standby position P0 is a position where the measuring unit 160 is installed and the transport unit 150 is on standby with the replacement pouch roll 120 attached, and may be a fixed position.

[0082] In addition, the transport unit 150 may be located below the measurement unit 160 at the transport standby position P0.

[0083] In addition, the control unit 190 can control the operation of the conveying unit 150 based on the measurement information of the measuring unit 160 so that the height of the central axis of the replacement pouch roll 120 matches the height of the central axis of the running pouch roll 110 chucked on the unwinder chucking unit 130.

[0084] As described above, the height of the central axis of the traveling pouch roll 110 (also called the "chucking height") may be preset as a reference height h0 in the control unit 190. The control unit 190 may receive the measured distance information to calculate the diameter of the replacement pouch roll 120, and calculate the height h1 of the central axis of the replacement pouch roll 120 based on the diameter information of the replacement pouch roll 120.

[0085] 4, the control unit 190 can calculate a height correction value Δh, which is the difference between the chucking height h0 and the height h1 of the central axis of the replacement pouch roll 120. Then, the control unit 190 controls the operation of the conveying unit 150 so that the height of the central axis of the replacement pouch roll 120 is corrected by the height correction value Δh.

[0086] In addition, the pouch connection unit 180 may include a guide bar 181 extending from the top of the replacement chucking unit 140 to the top of the unwinder chucking unit 130, and a gripper 183 that is movably installed along the guide bar 181, grips the end of the pouch 125 wound on the replacement pouch roll 120, and moves from the replacement chucking unit 140 toward the unwinder chucking unit 130.

[0087] The guide bar 181 is installed above the unwinder chucking unit 130 and the replacement chucking unit 140, parallel to the transport path M of the transport unit 150. A gripper 183 is installed on the guide bar 181 so as to be capable of reciprocating back and forth.

[0088] The gripper 183 grips the trailing end of the pouch 125 wound on the replacement pouch roll 120 and moves forward from the replacement chucking portion 140 toward the unwinder chucking portion 130.

[0089] In addition, the roll core recovery unit 170 is installed adjacent to the unwinder chucking unit 130 on the transport path of the transport unit 150. The roll core recovery unit 170 recovers the roll core 111 of the traveling pouch roll 110 that has been released from chucking by the unwinder chucking unit 130.

[0090] The roll core recovery unit 170 may include a roll core guide member 171 and a roll core recovery tube 173. The roll core guide member 171 may be connected to the unwinder chucking unit 130, and the roll core guide member 171 may be installed alongside the transport rail 151. The roll core 111 of the traveling pouch roll 110 that has been released from chucking by the unwinder chucking unit 130 is recovered into the roll core recovery tube 173 along the roll core guide member 171.

[0091] 5 to 8 are diagrams illustrating an operation state of a conveying unit in a pouch roll replacement system according to an embodiment of the present invention.

[0092] Hereinafter, a pouch roll position correcting method using the pouch roll replacement system 100 will be described with reference to FIGS.

[0093] In the control unit 190, the height of the central axis of the traveling pouch roll 110 chucked by the unwinder chucking unit 130 is preset as a reference height h0. Here, the chucking height of the unwinder chucking unit 130 is a fixed height, and the chucking height of the unwinder chucking unit 130 is the same as the chucking height of the replacement chucking unit 140. The chucking height of the unwinder chucking unit 130 corresponds to the height of the central axis of the traveling pouch roll 110.

[0094] 5, the replacement pouch roll 120 is supplied to the transport unit 150. The transport unit 150 is located at a transport standby position P0. At the transport standby position, the replacement pouch roll 120 is attached to the mounting member 154.

[0095] 6, at the transport standby position, the height of the central axis of the replacement pouch roll 120 is measured as a measurement height h1. At the transport standby position P0, the measurement unit 160 measures the distance to the replacement pouch roll 120. At the transport standby position P0, the measurement unit 160 and the transport unit 150 are disposed one above the other.

[0096] At this time, the control unit 190 calculates the height of the central axis of the replacement pouch roll 120 as the measured height h1 based on the measurement information.

[0097] Subsequently, the control unit 190 can calculate a height correction value Δh of the replacement pouch roll 120 relative to the running pouch roll 110. The height correction value Δh is the difference between the reference height h0 and the measured height h1.

[0098] In addition, the control unit 190 controls the operation of the conveying unit 150 based on the information on the height correction value Δh so that the height of the central axis of the replacement pouch roll 120 matches the reference height h0. At this time, the height adjustment unit 155 adjusts the height of the central axis of the replacement pouch roll 120 by the height correction value Δh. Through this process, the height of the central axis of the replacement pouch roll 120 mounted on the conveying unit 150 matches the reference height h0.

[0099] 7, the replacement pouch roll 120 is transported from the transport standby position P0 to the replacement chucking unit 140 by the transport unit 150. The replacement pouch roll 120 is chucked by the replacement chucking unit 140 while being attached to the transport unit 150.

[0100] When replacing the traveling pouch roll 110, the replacement pouch roll 120 chucked in the replacement chucking unit 140 is released, and the replacement pouch roll 120 is separated from the replacement chucking unit 140. The replacement pouch roll 120 separated from the replacement chucking unit 140 is transported by the transport unit 150 to the unwinder chucking unit 130.

[0101] Also, when replacing the traveling pouch roll 110, the unwinder chucking unit 130 is operated to release the chucking of the traveling pouch roll 110. The traveling pouch roll 110 that has been used is collected from the unwinder chucking unit 130 to the roll core collecting unit 170.

[0102] 8, when the replacement pouch roll 120 is chucked by the unwinder chucking section 130, the transport section 150 is operated to return from the unwinder chucking section 130 to the transport standby position P0.

[0103] The above-described embodiment of the present invention has been disclosed for illustrative purposes, and a person skilled in the art having ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions are to be considered as falling within the scope of the following claims. [Industrial Applicability]

[0104] According to a pouch roll replacement system and a pouch roll position correction method using the same according to one embodiment of the present invention, the height of the central axis of the replacement pouch roll mounted on the conveying unit can be adjusted to the chucking height of the replacement chucking unit and the unwinder chucking unit by measuring the roll diameter of the replacement pouch roll mounted on the conveying unit before transporting the replacement pouches with the replacement chucking unit.

Claims

1. a conveying unit that conveys the replacement pouch roll and is capable of adjusting the height of a central axis of the replacement pouch roll; a replacement chucking section configured to chuck the replacement pouch roll transported through the transport section and having a predetermined chucking height; Unwinder chucking section with running pouch roll installed; a measuring unit that measures a distance to the replacement pouch roll mounted on the conveying unit before conveying the replacement pouch roll to the replacement chucking unit; and A pouch roll replacement system including a control unit that controls the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit is adjusted based on measurement information from the measuring unit and the chucking height of the replacement chucking unit.

2. The pouch roll replacement system of claim 1, wherein the control unit controls the operation of the conveying unit so that the replacement pouch roll is conveyed to the replacement chucking unit after adjusting the height of the central axis of the replacement pouch roll mounted on the conveying unit.

3. The pouch roll replacement system of claim 1, wherein the control unit is configured to calculate a diameter of the replacement pouch roll based on the measurement information, and to calculate a difference between a chucking height of the replacement chucking unit and a height of the central axis of the replacement pouch roll mounted on the conveying unit based on the diameter of the replacement pouch roll.

4. The pouch roll replacement system of claim 3, wherein the control unit calculates a difference between the chucking height of the replacement chucking unit and the height of the central axis of the replacement pouch roll loaded on the transport unit as a height correction value, and controls the transport unit so that the height of the central axis of the replacement pouch roll loaded on the transport unit is adjusted by the height correction value.

5. The pouch roll replacement system according to claim 3 or 4, wherein the control unit adjusts the height of the central axis of the replacement pouch roll mounted on the conveying unit so that the height of the central axis of the replacement pouch roll mounted on the conveying unit matches the chucking height of the replacement chucking unit.

6. the unwinder chucking portion has the same chucking height as the replacement chucking portion, The pouch roll change system of claim 1 , wherein the transport section is configured to transport the replacement pouch roll from the replacement chucking section to the unwinder chucking section.

7. The conveying unit is a transport rail extending through the replacement chucking portion to guide transport of the replacement pouch roll to the unwinder chucking portion; a shuttle including a mounting member to which the replacement pouch roll is mounted, the shuttle being movably mounted along the transport rail; and The pouch roll replacement system according to claim 6, further comprising a height adjustment unit for adjusting the height of the mounting member.

8. The shuttle is provided so as to be capable of reciprocating along the transport rail, The pouch roll replacement system of claim 7, wherein the shuttle is moved to the unwinder chucking section when the running pouch roll is replaced with the replacement pouch roll, and is moved from the unwinder chucking section to the measurement section after the replacement pouch roll is chucked to the unwinder chucking section.

9. The pouch roll change system according to claim 7 or 8, wherein the mounting member is curved with a predetermined curvature.

10. The pouch roll replacement system according to claim 1 , wherein the measurement unit includes a distance sensor that measures a distance to the replacement pouch roll attached to the transport unit.

11. 11. The pouch roll change system of claim 10, wherein the distance sensor is an ultrasonic sensor.

12. The pouch roll replacement system according to claim 1, further comprising a pouch connecting section that grips an end of a pouch wound on the replacement pouch roll chucked in the replacement chucking section and then transfers the end of the pouch to the unwinder chucking section.

13. The pouch connection portion is a guide bar extending from an upper portion of the replacement chucking portion to an upper portion of the unwinder chucking portion; 13. The pouch roll replacement system of claim 12, further comprising a gripper movably mounted along the guide bar, gripping an end of a pouch wound on the replacement pouch roll and moving from the replacement chucking section toward the unwinder chucking section.

14. The pouch roll replacement system according to claims 12 and 13, wherein when the end of the pouch is gripped through the pouch connecting portion, the control portion causes the replacement pouch roll to be released from the chuck by the replacement chucking portion, and then causes the conveying portion to convey the replacement pouch roll to the unwinder chucking portion.

15. The pouch roll replacement system according to claim 1 , further comprising a roll core recovery section that recovers the roll core of the traveling pouch roll that has been released from the unwinder chucking section.

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