The slittering apparatus

Abstract

The present invention comprises a winding unit for winding a copper foil, a cutting unit for cutting the unwound copper foil, a winding unit for winding the cut copper foil, a touch roll unit for pressing the copper foil wound in the winding unit, and a control unit for controlling the operation of at least one of the winding unit and the touch roll unit, thereby preventing defects such as external damage to the copper foil and increasing copper foil productivity.

Description

Technology Field

[0001] The present invention relates to a slitter device, and more specifically, to a slitter device capable of improving productivity while preventing defects. Background Technology

[0002] Copper foil is used to manufacture various products, such as negative electrodes for secondary batteries and flexible printed circuit boards (FPCBs). This copper foil is manufactured through an electroplating method in which an electrolyte is supplied between the positive and negative electrodes and current is passed through it.

[0003] Copper foil produced by the electroplating method is cut to a predetermined width and wound onto a winding section. At this time, a touch roller presses the copper foil to minimize the air layer between the copper foil layers wound onto the winding section. In other words, since the touch roller presses the winding section while physically contacting the copper foil, the presence of air between the copper foil layers can be minimized.

[0004] However, if the vibration of the winding unit and the touch roller increases, irregular slip (stick-slip phenomenon, irregular contact pressure) occurs between the touch roller and the winding unit due to the vibration, causing a problem in which regular surface damage of within a few mm occurs on the surface of the wound copper foil. The problem to be solved

[0005] One embodiment of the present invention aims to provide a slitter device capable of maximizing copper foil production while minimizing the occurrence of defects in the copper foil. means of solving the problem

[0006] To achieve the above-mentioned purpose, a slitter device according to one embodiment of the present invention is characterized by comprising: a winding unit for winding a copper foil; a cutting unit for cutting the unwound copper foil; a winding unit for winding the cut copper foil; a touch roll unit for pressing the copper foil wound in the winding unit; and a control unit for controlling the operation of at least one of the winding unit and the touch roll unit.

[0007] In addition, the touch roll unit is characterized by including a vibration sensing module that measures the vibration of the touch roll unit.

[0008] In addition, the control unit is characterized by controlling at least one of the rotational speed of the winding unit and the pressure of the touch roll unit according to the signal of the vibration sensing module.

[0009] In addition, the control unit is characterized by reducing the pressure of the touch roll unit when the measured value by the vibration sensing module is greater than or equal to the set vibration value.

[0010] In addition, the control unit is characterized by reducing the rotational speed of the winding unit when the measured value by the vibration sensing module is greater than or equal to the set vibration value.

[0011] In addition, the control unit is characterized by increasing the rotational speed of the winding unit when the measured value by the vibration sensing module is smaller than the set vibration value.

[0012] In addition, the vibration sensing module is characterized by including an acceleration sensor.

[0013] In addition, the touch roller section is characterized by including a touch roller that rotates in contact with a copper foil, and a support arm that rotatably supports the touch roller.

[0014] In addition, the winding unit is characterized by including a product winding roller on which copper foil is wound, and a winding shaft connected to the product winding roller to rotate the product winding roller.

[0015] In addition, the winding shaft is characterized by including an air shaft.

[0016] In addition, the vibration sensing module is characterized by further including an MCU (micro controller unit) connected to communicate with an acceleration sensor.

[0017] In addition, the touch roller section is characterized by further including a pneumatic cylinder that adjusts the pressure of the touch roller. Effects of the invention

[0018] According to the present invention, it is possible to prevent regular surface damage to the copper foil caused by irregular slipping between the touch roller and the product winding roller.

[0019] In addition, it is possible to increase the productivity of copper foil while preventing external damage to the copper foil. Brief explanation of the drawing

[0020] FIG. 1 is a schematic diagram illustrating an electrolytic copper foil manufacturing apparatus according to one embodiment of the present invention. Figure 2 is a schematic block diagram of the electrolytic copper foil manufacturing apparatus shown in Figure 1. FIG. 3 is a schematic block diagram of a slitter device according to one embodiment of the present invention. Figure 4 is a graph for explaining the operation of the control unit illustrated in Figure 3. Figure 5 is a graph for explaining another operation of the control unit shown in Figure 3. FIG. 6 is a schematic diagram illustrating one embodiment of the winding section and touch roll section shown in FIG. 3. Specific details for implementing the invention

[0021] Embodiments of the present invention will be described in detail below with reference to the attached drawings. However, the embodiments described below are presented for illustrative purposes only to aid in a clear understanding of the present invention and do not limit the scope of the present invention.

[0022] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the matters shown in the drawings. Throughout the specification, identical components may be referred to by the same reference numerals. In describing the present invention, if it is determined that a detailed description of related known technology may unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0023] Where terms such as "includes," "has," or "consists of" are used in this specification, other parts may be added unless the expression "only" is used. Where a component is expressed in the singular, it includes the plural unless specifically stated otherwise. Furthermore, in interpreting a component, it is interpreted to include a margin of error even without separate explicit description.

[0024] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless expressions such as 'immediately' or 'directly' are used.

[0025] In the case of an explanation of a temporal relationship, for example, when the temporal sequence is explained using expressions such as 'after', 'following', 'next', or 'before', it may include cases where the sequence is not continuous unless expressions such as 'immediately' or 'directly' are used.

[0026] The term “at least one” should be understood to include all combinations that can be presented from one or more related items. For example, the meaning of “at least one of the first item, the second item, and the third item” may mean not only the first item, the second item, or the third item individually, but also all combinations of items that can be presented from two or more of the first item, the second item, and the third item.

[0027] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0028] FIG. 1 is a schematic diagram illustrating an electrolytic copper foil manufacturing apparatus according to one embodiment of the present invention, and FIG. 2 is a schematic block diagram of the electrolytic copper foil manufacturing apparatus illustrated in FIG. 1.

[0029] Referring to FIGS. 1 and 2, the electrolytic copper foil manufacturing apparatus according to the present invention manufactures copper foil using an electroplating method. The electrolytic copper foil manufacturing apparatus according to the present invention may include a negative electrode roller (3), an anode member (4), a copper foil winding roller (5), and a conveying roller (6).

[0030] The cathode roller (3) and the anode member (4) can electrodeposit a copper foil (2) onto the cathode roller (3) by an electroplating method using an electrolyte. When current flows through the cathode roller (3) and the anode member (4) by passing current through the electrolyte, copper ions dissolved in the electrolyte can be reduced at the cathode roller (3). Accordingly, a copper foil can be electrodeposited on the surface of the cathode roller (3).

[0031] The cathode roller (3) can rotate around a rotation axis. While rotating around the rotation axis, the cathode roller (3) can continuously perform an electrodeposition operation to electrodeposit copper foil onto a surface and a winding operation to remove the electrodeposited copper foil from the surface. The cathode roller (3) may be formed in the shape of a drum overall, but is not limited thereto; it may be formed in other shapes as long as it is capable of continuously performing the electrodeposition operation and the winding operation while rotating around the rotation axis. The cathode roller (3) can be rotated by a driving force generated by a cathode mechanism (not shown).

[0032] The positive member (4) is electrically connected to the negative roller (3) through an electrolyte. The positive member (4) may be positioned below the negative roller (3). The positive member (4) may be positioned spaced apart from the surface of the negative roller (3). The surface of the positive member (4) and the surface of the negative roller (3) may be formed in the same shape. For example, if the negative roller (3) is formed in the shape of a circular rectangle so that its surface forms a curved surface, the positive member (4) may be formed in the shape of a semicircular rectangle so that its surface forms a curved surface.

[0033] The copper foil winding roller (5) is used to wind copper foil. Copper foil produced by the above-mentioned cathode roller (3) can be wound onto the copper foil winding roller (5). The copper foil winding roller (5) can wind copper foil while rotating around a rotation axis. The copper foil winding roller (5) may be formed in the shape of a drum overall, but is not limited thereto; it may be formed in other shapes as long as it is capable of winding copper foil while rotating around a rotation axis. The copper foil winding roller (5) can be rotated by a driving force generated by a winding mechanism (not shown).

[0034] The copper foil winding roller (5) is positioned to be mountable and detachable from the electrolytic copper foil manufacturing device. When a predetermined amount of copper foil (2) is wound onto the copper foil winding roller (5), the copper foil winding roller (5) can be detached from the electrolytic copper foil manufacturing device. The copper foil winding roller (5) separated from the electrolytic copper foil manufacturing device can be moved to and mounted on the unwinding section (11) of the slitter device (1) according to the present invention, which will be described later.

[0035] The transport roller (6) transports the copper foil (2). The copper foil (2) can be transported from the negative roller (3) to the copper foil winding roller (5) by the transport roller (6). During the process of transporting the copper foil (2) from the negative roller (3) to the copper foil winding roller (5) by the transport roller (6), drying operations to dry the copper foil (2), cutting operations to cut the edges (edge ​​portions) of the copper foil (2), and anti-corrosion operations to perform anti-corrosion treatment on the copper foil can be carried out.

[0036] FIG. 3 is a schematic block diagram of a slitter device (1) according to one embodiment of the present invention, FIG. 4 is a graph for explaining one operation of the control unit (40) shown in FIG. 3, FIG. 5 is a graph for explaining another operation of the control unit (40) shown in FIG. 3, and FIG. 6 is a schematic diagram showing one embodiment of the winding unit (20) and the touch roll unit (30) shown in FIG. 3.

[0037] Referring to FIGS. 3 to 6, a slitter device (1) according to one embodiment of the present invention includes a winding unit (11), a cutting unit (10), a winding unit (20), a touch roll unit (30), and a control unit (40).

[0038] The unwinding unit (11) is equipped with a copper foil winding roller (5) of an electrolytic copper foil manufacturing device. The unwinding unit (11) can unwind the copper foil (2) from the copper foil winding roller (5). The cutting unit (10) cuts the copper foil (2) unwound from the unwinding unit (11). The cutting unit (10) can cut the copper foil (2) to produce a product having the length and width required by the customer. In one embodiment, the cutting unit (10) can cut a portion of the copper foil (2) to have a predetermined width. By doing so, the copper foil (2) can be cut to the required width.

[0039] The winding unit (20) winds the copper foil (2) having a predetermined width, which is cut at the cutting unit (10). The winding unit (20) includes a product winding roller (210) and a winding shaft (220). The product winding roller (210) may be a core that winds the copper foil (2), which is a product having a predetermined specification, which is cut at the cutting unit (10). The winding shaft (220) is connected to the product winding roller (210) and rotates the product winding roller (210). The winding shaft (220) may include an air shaft.

[0040] The touch roller section (30) applies pressure to the copper foil (2) wound on the winding section (20). The touch roller section (30) comes into contact with the copper foil (2) wound on the winding section (20). Specifically, the touch roller (310) rotates while applying pressure to the copper foil (2) wound on the product winding roller (210). By doing so, the air layer between the copper foil (2) layers can be minimized. The touch roller section (30) can adjust the pressure on the copper foil (2) by its weight and the pneumatic cylinder (330) described later.

[0041] The control unit (40) can control the operation of at least one of the winding unit (20) and the touch roll unit (30). Meanwhile, the touch roll unit (30) may include a vibration sensing module (300) that measures the vibration of the touch roll unit (30). The control unit (40) can control at least one of the rotational speed of the winding unit (20) and the pressure of the touch roll unit (30) according to the signal of the vibration sensing module (300). By doing so, external damage to the surface of the copper foil (2) wound on the winding unit (20) in the transverse direction (TD) direction, that is, the axial direction of the product winding roller (210), can be prevented. In addition, productivity can be maximized while minimizing the occurrence of defects. That is, productivity can be improved while ensuring excellent quality.

[0042] Referring to FIGS. 4 to 6, the control unit (40), in one embodiment, can reduce the pressure of the touch roll unit (30) when the measured value by the vibration sensing module (300) is greater than or equal to a set vibration value. Here, the pressure of the touch roll unit (30) can be adjusted through a pneumatic cylinder (330) described later. That is, the control unit (40) can adjust the pressure of the touch roll unit (30) by controlling the pneumatic cylinder (330).

[0043] Meanwhile, the control unit (40) can reduce the pressure of the touch roll unit (30) until the measured value by the vibration sensing module (300) decreases to below the set vibration value. As the pressure of the touch roll unit (30) decreases, the vibration magnitude decreases, thereby preventing external damage to the copper foil (2). However, the pressure of the touch roll unit (30) can be controlled to be maintained above a standard value. Here, the standard value may be the minimum value of the touch roll unit (30) required to remove the air layer between the copper foil (2) layers.

[0044] The control unit (40) can reduce the rotational speed of the winding unit (20) when the measured value by the vibration sensing module (300) is greater than or equal to the set vibration value. The rotational speed of the winding unit (20) can be adjusted through a motor (not shown) that rotates the product winding roller (210). As the rotational speed of the winding unit (20) decreases, the vibration magnitude decreases, thereby preventing external damage to the copper foil (2).

[0045] The control unit (40) can increase the rotational speed of the winding unit (20) when the measured value by the vibration sensing module (300) is smaller than the set vibration value. By doing so, the production volume of copper foil (2) can be improved. However, the control unit (40) does not increase the rotational speed of the winding unit (20) when the measured value by the vibration sensing module (300) is greater than the set vibration value.

[0046] The control unit (40) can adjust at least one of the rotational speed of the winding unit (20) and the pressure of the touch roll unit (30). That is, the control unit (40) can control the rotational speed of the winding unit (20) and the pressure of the touch roll unit (30) simultaneously or selectively. By doing so, the slitter device (1) can be operated under optimal conditions that prevent defects such as damage to the appearance of the copper foil (2) and increase productivity.

[0047] In one embodiment, the control unit (40) may prioritize adjusting (reducing) the pressure of the touch roll unit (20) among the rotational speed of the winding unit (20) and the pressure of the touch roll unit (30). Here, even if the pressure of the touch roll unit (30) is reduced to a standard value, if the measured value by the vibration sensing module (300) is greater than or equal to the set vibration value, the rotational speed of the winding unit (20) may be adjusted (reduced). Thus, defects can be prevented and productivity can be increased. It is not limited to this, and the control unit (40) may control the rotational speed of the winding unit (20) and the pressure of the touch roll unit (30) simultaneously or selectively as needed.

[0048] Referring to FIG. 6, the touch roll unit (30) may include a touch roller (310) and a support arm (320). The touch roller (310) rotates in contact with the copper foil (2). The support arm (320) rotatably supports the touch roller (310). Meanwhile, the vibration sensing module (300) includes an acceleration sensor (301). The acceleration sensor (301) is positioned on the support arm (320) to measure vibration acceleration according to the vibration of the support arm (320). Since the touch roll unit (30) rotates while in contact with the winding unit (20), the touch roll unit (30) vibrates according to the vibration of the winding unit (20). Accordingly, the acceleration sensor (301) can detect the vibration of the winding unit (20).

[0049] The vibration sensing module (300) may further include an MCU (micro controller unit, 302). The MCU (302) is connected to the accelerometer (301) so as to be communicable. The MCU (302) may be connected to the accelerometer (301) by 2 to 4 cables. In one embodiment, the MCU (302) and the accelerometer (301) may be connected by a communication method such as SPI, RS232, RS485, etc.

[0050] The touch roller section (30) may further include a pneumatic cylinder (330). The pneumatic cylinder (330) adjusts the pressure of the touch roller (310). The pneumatic cylinder (330) may be connected to a support arm (320). The pneumatic cylinder (330) can move the support arm (320) by means of the pneumatic pressure to press the touch roller (310) against the product winding roller (210).

[0051] Although the invention made by the inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the gist thereof. Explanation of the symbols

[0052] 1: Slitter device 11 : Volume 10: Cutting section 20 : Winding section 30 : Touch roll section 40 : Control unit 210 : Product winding roller 220 : Winding shaft 300 : Vibration sensing module 310 : Touch roller 320 : Jijiam 330 : Pneumatic cylinder

Claims

Claim 1 A slitter device comprising: a winding unit for winding copper foil; a cutting unit for cutting the unwound copper foil; a winding unit for winding the cut copper foil; a touch roll unit for applying pressure to the copper foil wound in the winding unit; a control unit for controlling the operation of at least one of the winding unit and the touch roll unit; and a vibration sensing module for measuring the vibration of the touch roll unit, wherein the control unit preferentially reduces the pressure of the touch roll unit until the pressure of the touch roll unit decreases to below the set vibration value when the measurement value by the vibration sensing module is greater than or equal to a set vibration value, and further reduces the rotational speed of the winding unit when the pressure of the touch roll unit decreases to a standard value, which is the minimum pressure of the touch roll unit required to remove the air layer between the copper foil layers, but the pressure of the touch roll unit decreases to a standard value, which is the minimum pressure of the touch roll unit required to remove the air layer between the copper foil layers. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 In claim 1, the control unit is a slitter device that increases the rotational speed of the winding unit when the measured value by the vibration sensing module is smaller than the set vibration value. Claim 7 In claim 1, the vibration sensing module is a slitter device including an acceleration sensor. Claim 8 In claim 1, the touch roller portion comprises: a touch roller that rotates in contact with a copper foil; and a support arm that rotatably supports the touch roller, forming a slitter device. Claim 9 In claim 1, the winding unit comprises a product winding roller on which copper foil is wound; and a slitter device including a winding shaft connected to the product winding roller to rotate the product winding roller. Claim 10 In claim 9, the winding shaft is a slitter device including an air shaft. Claim 11 In claim 7, the vibration sensing module is a slitter device further comprising an MCU (micro controller unit) that is communicably connected to an acceleration sensor. Claim 12 In claim 8, the touch roller part further comprises a pneumatic cylinder for adjusting the pressure of the touch roller, in a slitter device.

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