Tape removal device

Abstract

The present invention relates to a tape removal device for automatically removing a tape attached to an electrode roll for fixing the electrode roll, and more particularly, to a tape removal device comprising: a sensing unit configured to sense the tape attached to the electrode roll; a spray unit configured to spray air toward the tape; a supporting unit configured to support a non-adhesive portion of the tape; and a clamp configured to fix the non-adhesive portion of the tape together with the supporting unit.

Description

Technical Field

[0001] This application claims the benefit of priority from Korean Patent Application No. 2020-0087012, filed on Jul. 14, 2020, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present invention relates to an adhesive tape removing device, and more particularly, to an apparatus capable of automatically removing an adhesive tape attached to an electrode roll without requiring a worker in a tape removing process. Background Art

[0003] Lithium secondary batteries, which can be charged and discharged without replacing battery cells, are suitable for use as built-in battery cells and have rapidly achieved functional improvements such as improved stability and increased capacity. As a result, the types of devices using lithium secondary batteries are gradually increasing.

[0004] For example, lithium secondary batteries have been widely used as energy sources for wireless mobile devices or wearable devices that are small multifunctional products, and have also been used as energy sources for electric vehicles and hybrid electric vehicles that have been proposed as alternatives to existing gasoline and diesel vehicles that cause air pollution.

[0005] The electrode assemblies of lithium secondary batteries are classified according to the structure of the electrode assembly, which includes a positive electrode, a separator, and a negative electrode. Generally, electrode assemblies include: a stacked electrode assembly, which is configured to have a structure in which one or more positive electrode plates and one or more negative electrode plates are stacked with a separator interposed therebetween; a stacked folding electrode assembly, which is configured to have a structure in which stacked unit cells, each including a positive electrode plate and a negative electrode plate, are wound with a separator; a laminated stacked electrode assembly, which is configured to have a structure in which stacked unit cells, each including a positive electrode plate and a negative electrode plate, are stacked with a separator interposed therebetween; and a jelly roll electrode assembly, which is configured to have a structure in which a positive electrode sheet and a negative electrode sheet are wound with a separator interposed therebetween.

[0006] The process of manufacturing electrodes including positive and negative electrodes includes the following steps: coating the remaining portion of an electrode sheet wound into a roll with an electrode agent except for the portion to form an electrode tab; drying and rolling the electrode agent; slitting the electrode sheet; and cutting the slit electrode sheet into unit electrodes.

[0007] To prevent electrode rolls from unwinding during the electrode manufacturing process, they are stored and transported with tape attached to the beginning or end of the roll. Furthermore, the tape must be removed to unwind the taped electrode roll for use in the electrode manufacturing process. Workers are required to apply and remove the tape. However, depending on the worker's skills, the tape application and removal process can be inconsistent, which can delay the electrode manufacturing process.

[0008] In this regard, Japanese Patent Application Publication No. 2008-162781 (hereinafter referred to as Patent Document 1) discloses a sewing machine including a rotating unit configured to rotate a paper roll and a tape removing unit configured to remove a winding fixing tape for fixing a winding end portion of the paper roll.

[0009] The tape removal unit of Patent Document 1 is used to remove a tape whose ends are bent so that the adhesive surfaces are bonded to each other, wherein the bent portion of the tape is lifted using a tape scraper, and the paper roll is further rotated in the winding direction with the bent portion supported, thereby removing the tape from the paper roll.

[0010] However, the tape removal unit of Patent Document 1 includes a frame composed of a column and a beam. Since the tape removal unit is configured to have a structure in which a paper roll is placed in the frame to remove the tape, the size of the paper roll is limited. Furthermore, the paper roll may be damaged when the bent portion of the tape is lifted using a tape scraper.

[0011] Therefore, there is a high demand for an apparatus capable of removing an adhesive tape attached to an electrode roll to prevent the electrode roll from being unwound, wherein the apparatus is applicable to the electrode roll without being limited by the size of the electrode roll and can automatically remove the adhesive tape from the electrode roll without requiring a worker.

[0012] (Prior art literature)

[0013] (Patent Document 1) Japanese Patent Application Publication No. 2008-162781 (July 17, 2008) Summary of the Invention

[0014] Technical issues

[0015] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a tape removal apparatus capable of automatically removing a tape attached to an electrode roll, thereby improving the productivity of an electrode manufacturing process.

[0016] Technical Solution

[0017] In order to achieve the above-mentioned objectives, the present invention provides a tape removal device for removing a tape attached to an electrode roll, the tape removal device comprising: a sensing unit, the sensing unit being configured to sense the tape attached to the electrode roll; a spray unit, the spray unit being configured to spray air toward the tape; a supporting unit, the supporting unit being configured to support a non-adhesive portion of the tape; and a clamp, the clamp being configured to fix the non-adhesive portion of the tape together with the supporting unit.

[0018] In the adhesive tape removal apparatus according to the present invention, the sensing unit may sense a color of the adhesive tape.

[0019] The adhesive tape removal apparatus according to the present invention may further include a rotating roller configured to rotate the electrode roll, wherein the sensing unit may sense the adhesive tape attached to the end of the electrode roll rotated by the rotating roller, and the spraying unit may spray air when the sensing unit senses the adhesive tape.

[0020] In the adhesive tape removal apparatus according to the present invention, the adhesive tape may include an adhesive portion attached to an end of the electrode roll and a non-adhesive portion extending from the adhesive portion, the non-adhesive portion not attached to the electrode roll, and the spray unit may spray air between the non-adhesive portion and an outer surface of the electrode roll.

[0021] In the adhesive tape removal apparatus according to the present invention, the rotating roller may be configured to be movable up and down, and the rotating roller may be moved downward so that the non-adherent portion of the adhesive tape is disposed on one surface of the supporting unit.

[0022] In the tape removal apparatus according to the present invention, the clamp may be configured to be movable up and down, left and right, and forward and backward, and the clamp may be moved toward the non-adhesive portion of the tape provided on the outer surface of the supporting unit to fix the non-adhesive portion of the tape.

[0023] In the adhesive tape removal apparatus according to the present invention, the jig may be provided with a sensor configured to sense the non-adherent portion of the adhesive tape.

[0024] In the adhesive tape removal apparatus according to the present invention, the rotating roller may rotate in a state in which the non-adhered portion of the adhesive tape is fixed by the supporting unit and the clamp, thereby removing the adhered portion of the adhesive tape from the electrode roll.

[0025] In the adhesive tape removal apparatus according to the present invention, the number of the spray units and the number of the clamps may be set to be equal to the number of the adhesive tapes, and the number of the adhesive tapes may be two or more.

[0026] In the adhesive tape removal apparatus according to the present invention, a position of the spray unit may be adjustable.

[0027] In the adhesive tape removal apparatus according to the present invention, the spray unit may include a structure capable of adjusting a direction in which the air is sprayed.

[0028] In another embodiment, a tape removal device for removing a tape attached to an electrode roll may be configured to have a structure including: a sensing unit configured to sense the tape attached to the electrode roll; and an adsorption unit configured to adsorb the tape to remove the tape from the electrode roll.

[0029] In addition, the adsorption unit may include a tape clamp configured to clamp a non-adhesive portion of the tape.

[0030] Beneficial effects

[0031] As apparent from the above description, the adhesive tape removal apparatus according to the present invention is configured to have a structure in which the electrode roll is fixed to a rotating roller that can move in the up and down directions and in which the clamp moves toward the adhesive tape attached to the electrode roll, so that the adhesive tape removal apparatus according to the present invention can be used regardless of the radius of the electrode roll.

[0032] Furthermore, a portion of the tape includes a non-adhesive portion that is not attached to the electrode roll, and air is sprayed toward the non-adhesive portion to separate the tape from the electrode roll, thereby preventing damage to the electrode roll during separation of the non-adhesive portion from the electrode roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 1 is a front view illustrating an operation process of the adhesive tape removal apparatus according to the first embodiment.

[0034] Figure 2 yes Figure 1 An enlarged perspective view of (a).

[0035] Figure 3 yes Figure 1 (c) is an enlarged perspective view of FIG.

[0036] Figure 4 yes Figure 1 (d) is an enlarged perspective view of the embodiment of the present invention.

[0037] Figure 5 yes Figure 1(e) is an enlarged perspective view of FIG.

[0038] Figure 6 yes Figure 1 (f) is an enlarged perspective view of FIG.

[0039] Figure 7 is a perspective view of an adhesive tape removal apparatus according to a second embodiment.

[0040] Figure 8 is a perspective view of an adhesive tape removal apparatus according to a third embodiment. DETAILED DESCRIPTION

[0041] Now, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the preferred embodiments of the present invention. However, in describing the working principles of the preferred embodiments of the present invention in detail, when the detailed description of known functions and structures incorporated herein may obscure the main purpose of the present invention, the detailed description will be omitted.

[0042] In addition, the same reference numerals will be used throughout the drawings to represent components that perform similar functions or operations. Where a component is referred to as being connected to another component throughout the application, the component may be directly connected to the other component and may also be indirectly connected to the other component via another component. In addition, the inclusion of an element does not mean the exclusion of other elements, but rather means that other elements may be further included unless otherwise specified.

[0043] Furthermore, unless otherwise limited, the description that specifies elements by limitation or addition is applicable to all inventions and does not limit the specific invention.

[0044] Furthermore, in the description of the present invention and the claims of this application, unless otherwise mentioned, the singular form is intended to include the plural form.

[0045] In addition, in the description of the present invention and the claims of this application, unless otherwise stated, "or" includes "and". Therefore, "including A or B" refers to three cases, namely, the case including A, the case including B, and the case including A and B.

[0046] Furthermore, all numerical ranges include the lowest value, the highest value and all intermediate values therebetween unless the context clearly dictates otherwise.

[0047] Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0048] Figure 1 is a front view illustrating an operation process of the adhesive tape removal apparatus according to the present invention.

[0049] Reference Figure 1 , which shows a process of removing the tape attached to the electrode roll, the electrode roll 101 can be rotated in a state of being mounted on the rotating roller 170. The tape attaching direction is determined by the winding direction of the electrode roll 101. Figure 1 The electrode roll 101 is shown as being wound in a counterclockwise direction.

[0050] The electrode roll 101 may be an electrode roll before punching is performed to form electrode tabs, or may be an electrode roll in a state in which electrode tabs are formed.

[0051] An adhesive tape 110 configured to prevent the electrode roll 101 from being unwound is attached to an end of the electrode roll 101 .

[0052] As described above, the tape removal device removes the tape attached to the electrode roll. Specifically, the tape removal device includes: a sensing unit 120 configured to sense the tape 110 attached to the electrode roll 101; a spray unit 130 configured to spray air toward the tape 110 to separate the non-adherent portion of the tape 110 from the outer surface of the electrode roll; a support unit 140 configured to support the non-adherent portion of the tape 110 that has been separated from the outer surface of the electrode roll by the air; and a clamp 150 configured to secure the non-adherent portion of the tape 110 together with the support unit 140.

[0053] Figure 1 (a) shows a state where the electrode roll 101 to which the tape 110 is attached is placed above the tape removal apparatus, wherein the electrode roll rotates in a clockwise or counterclockwise direction so that the sensing unit 120 senses the position of the tape 110 .

[0054] The sensing unit 120 may sense the color of the tape 110. The sensing unit 120 may include an ultraviolet sensor, an infrared sensor, a temperature sensor, or a visual sensor, which may be selectively provided according to the color of the tape or the type of the luminescent material added to the tape.

[0055] Figure 1 (b) shows a state where the tape 110 is disposed above the sensing unit 120. Specifically, the tape 110 may be disposed in a state deviating from the upper portion of the sensing unit 120 so that the tape 110 is located in a direction in which the spray unit sprays air, as shown in FIG. Figure 1 As shown in (c).

[0056] That is, the spray unit sprays air between the non-adhered portion of the tape and the outer surface of the electrode roll, so that the non-adhered portion is separated from the electrode roll.

[0057] Figure 1(d) shows a state in which the electrode roll moves downward in the y-axis direction so that the non-adherent portion separated from the electrode roll is disposed on one surface of the support unit 140 .

[0058] Figure 1 (e) shows a state in which the jig 150 moves toward the supporting unit 140 in the x-axis direction to fix the non-adhered portion of the tape.

[0059] At this point, the adhesive portion of the tape remains attached to the outer surface of the electrode roll, while the non-adherent portion of the tape is separated from the electrode roll. The non-adherent portion of the tape is then secured between the support unit and the clamp. Thus, the adhesive portion, which remains attached to the outer surface of the electrode roll, prevents the electrode roll from unwinding.

[0060] Figure 1 (f) shows a process of removing the adhered portion of the tape from the outer surface of the electrode roll while the electrode roll 101 rotates in the clockwise direction, wherein the electrode roll from which the tape is removed may be moved upward in the y-axis direction.

[0061] Figure 2 yes Figure 1 An enlarged perspective view of (a).

[0062] Reference Figure 2 , the electrode roll 101 is in a state of being wound in a counterclockwise direction, wherein the adhesive tape 110 is fixed to the end of the electrode roll by being attached.

[0063] The sensing unit 120, the spraying unit 130, and the supporting unit 140 are disposed on an upper surface of the base unit 103. The supporting unit 140 is configured to have a structure in which the supporting unit protrudes upward so that a non-adherent portion of the tape is disposed at the supporting unit.

[0064] The sensing unit 120 is provided at a portion of the upper surface of the support unit 140. The sensing unit 120 quickly senses the position of the tape attached to the outer surface of the electrode roll 101 while the electrode roll 101 rotates in a clockwise or counterclockwise direction.

[0065] although Figure 2 The linear sensing unit 120 is shown as being provided to have the same length as the supporting unit 140 in the z-axis direction, but the sensing unit 120 may protrude further than the upper surface of the supporting unit, or a plurality of sensing units may be provided spaced apart from each other.

[0066] The spray unit 130 is provided on one side of the support unit 140 and the sensing unit 120. The spray port 131 of the spray unit 130 is provided to face the electrode roll 101, and the spray unit 130 may have a structure capable of adjusting the direction of the sprayed air. Figure 2The spray port 131 is shown to open in a direction toward the support unit 140 , but in a case where the electrode roll is wound in a clockwise direction, the spray unit 130 may be reinstalled so that the spray port 131 opens in a direction opposite to the support unit 140 .

[0067] Figure 3 yes Figure 1 (c) is an enlarged perspective view of FIG.

[0068] Reference Figure 3 The sensing unit 120 senses the adhesive tape attached to the end of the electrode roll rotated by the rotating roller. When the sensing unit 120 senses the position of the adhesive tape 110, the spraying unit 130 sprays air.

[0069] The adhesive tape 110 includes an adhesive portion 111 that is attached to the end of the electrode roll and a non-adhesive portion 112 that extends from the adhesive portion 111 and is not attached to the electrode roll. The spray unit 130 sprays air between the non-adhesive portion 112 and the outer surface of the electrode roll 101. At this point, the non-adhesive portion 112 is separated from the outer surface of the electrode roll 101.

[0070] The electrode roll is attached to two adhesive tapes 110. Two spray units 130 are provided so that air can be sprayed toward the two adhesive tapes. The number of spray units 130 can be equal to the number of adhesive tapes 110 attached to the electrode roll 101. The position of the spray units 130 can be adjusted so that the spray units are positioned facing the adhesive tapes 110. The spray units can be moved along the z-axis.

[0071] Figure 4 yes Figure 1 (d) is an enlarged perspective view of the embodiment of the present invention.

[0072] Reference Figure 4 , while the rotating roller 170 that fixes and rotates the electrode roll 101 rotates in the clockwise direction, the non-adhesive portion 112 of the tape is disposed on one surface of the supporting unit 140 .

[0073] The rotating roller 170 may move downward in the y-axis direction so that the non-adhesive portion 112 of the tape is disposed on one surface of the support unit 140. Alternatively, the base unit 103 and the support unit 140 may be separated from each other, and the support unit 140 may move upward in the y-axis direction.

[0074] Figure 5 yes Figure 1 (e) is an enlarged perspective view of FIG.

[0075] Reference Figure 5 , the clamp 150 moves toward the non-adhesive portion 112 of the tape so as to fix the non-adhesive portion to the supporting unit.

[0076] The jig 150 may be mounted to the transfer unit 152. The transfer unit 152 may be moved in a direction toward the base unit 103, and further, the jig 150 may be moved toward the non-adhesion portion 112 on the transfer unit 152.

[0077] The jig 150 may be provided with a sensor 151 configured to sense the non-adhesive portion of the tape so that the jig 150 moves toward the non-adhesive portion of the tape. The sensor 151 may sense the non-adhesive portion 112 in the same manner as the sensing unit 120 provided on the upper surface of the support unit 140.

[0078] The fixture 150 can move forward and backward along the x-axis, can move up and down along the y-axis, and can move left and right along the z-axis. Figure 5 Move independently in the directions indicated by the arrows shown in .

[0079] There is no particular restriction on the movement of the clamp 150. The clamp 150 itself may move up and down. Alternatively, Figure 5 Unlike the example shown in , the substrate can be moved up and down while the jig is attached to the substrate as a separate member.

[0080] Figure 5 The electrode roll 101 is attached with two tapes, and in order to fix the tapes, two clamps 150 are provided so that the clamps are attached to the two tapes, respectively.

[0081] That is, the number of the clamps and the number of the spraying units may be equal to the number of the adhesive tapes. Preferably, the number of the adhesive tapes is two or more so that the electrode roll can be stably fixed by the adhesive tapes.

[0082] Figure 6 yes Figure 1 (f) is an enlarged perspective view of FIG.

[0083] Reference Figure 6 , the conveying unit 152 on which the clamp 150 is mounted moves in a direction toward the base unit 103 so that the base unit 103 and the conveying unit 152 abut against each other.

[0084] The clamp 150 further moves in the direction indicated by the arrow to abut against the adhesive tape, and the adhesive tape may be fixed between the supporting unit 140 and the clamp 150 .

[0085] In this state, the adhered portion 111 of the tape may be removed from the electrode roll 101 while the rotating roller 170 rotates in the clockwise direction.

[0086] The rotating roller 170 fixing the electrode roll 101 from which the tape has been completely removed may be moved upward to be away from the supporting unit 140 , and the electrode roll 101 may be moved for another process.

[0087] Figure 7 is a perspective view of an adhesive tape removal apparatus according to a second embodiment.

[0088] Reference Figure 7 ,and Figures 1 to 6 Unlike the electrode roll 101 shown in FIG, the electrode roll 201 has a structure in which the electrode roll is wound in a clockwise direction.

[0089] Therefore, the direction in which the tape is attached to the electrode roll 201 is changed compared to the electrode roll 101. The spraying direction of the spray unit 230 is opposite to that of the spray unit 130 so as to spray air between the non-adherent portion of the tape and the electrode roll 201.

[0090] In addition, with reference to Figures 1 to 6 In the same manner as described, the sensing unit 220 senses the tape 210 attached to the electrode roll 201, sprays air to separate the non-adhesive portion of the tape from the electrode roll, and the non-adhesive portion separated from the electrode roll by the air is set between the supporting unit 240 and the clamp 250, and the adhered portion of the tape is separated from the electrode roll while the electrode roll 201 rotates.

[0091] Figure 8 is a perspective view of an adhesive tape removal apparatus according to a third embodiment.

[0092] Reference Figure 8 , an adhesive tape 310 is attached to the end of the electrode roll 301 , and the adhesive tape 310 includes an adhesive portion 311 and a non-adhesive portion 312 .

[0093] The tape removal apparatus includes a sensing unit 320 configured to sense the tape 310 attached to the electrode roll 301 and a suction unit 380 configured to suction the tape 310 to remove the tape from the electrode roll 301 .

[0094] The adsorption unit 380 has an adsorption port formed in a surface to be engaged with the adhesive tape, and thus can adsorb the adhesive tape by vacuum adsorption.

[0095] At this time, the non-adherent portion of the tape is first separated from the electrode roll. The adsorption unit 380 may include a tape clamp 390 configured to first clamp the separated non-adherent portion and separate the adhered portion from the electrode roll.

[0096] As described above, the tape removal apparatus according to the present invention can automatically remove the tape attached to the outer surface of the electrode roll, thereby making it possible to use the electrode roll. Since the electrode manufacturing process is performed without stopping, a decrease in productivity can be prevented.

[0097] Those skilled in the art to which the present invention pertains will appreciate that various applications and modifications are possible within the scope of the present invention based on the above description.

[0098] (Explanation of Reference Numbers)

[0099] 101, 201, 301: electrode rolls

[0100] 103: Base unit

[0101] 110, 210, 310: tape

[0102] 111, 311: Adhesion part

[0103] 112, 312: non-adhesive part

[0104] 120, 220, 320: Sensing unit

[0105] 130, 230: injection unit

[0106] 131: Jet port

[0107] 140, 240: support unit

[0108] 150, 250: clamp

[0109] 151: Sensor

[0110] 152: Transmission unit

[0111] 170: Rotating roller

[0112] 380: Adsorption unit

[0113] 390: Tape clamp.

[0114] Industrial Applicability

[0115] As apparent from the above description, the adhesive tape removal apparatus according to the present invention is configured to have a structure in which the electrode roll is fixed to a rotating roller that can move in the up and down directions and in which the clamp moves toward the adhesive tape attached to the electrode roll, so that the adhesive tape removal apparatus according to the present invention can be used regardless of the radius of the electrode roll.

[0116] Furthermore, a portion of the tape includes a non-adhesive portion that is not attached to the electrode roll, and air is sprayed toward the non-adhesive portion to separate the tape from the electrode roll, thereby preventing damage to the electrode roll during separation of the non-adhesive portion from the electrode roll.

Claims

1. A tape removal device for removing a tape attached to an electrode roll, the tape removal device comprising: a rotating roller, the electrode roll being mounted and fixed to the rotating roller, and the rotating roller being configured to rotate the electrode roll; a sensing unit configured to sense the tape attached to the electrode roll; a spray unit configured to spray air toward the adhesive tape; a supporting unit configured to have a structure in which the supporting unit protrudes upward to support the non-adhesive portion of the tape, the sensing unit being disposed on a portion of an upper surface of the supporting unit; as well as a clamp configured to fix the non-adhesive portion of the tape together with the supporting unit, wherein the rotating roller is configured to be movable up and down relative to the supporting unit, and the rotating roller moves downward so that the non-adhesive portion of the tape is disposed on one side surface of the supporting unit, The clamp is configured to be movable up and down, left and right, and forward and backward relative to the supporting unit, and the clamp moves toward the non-adhesive portion of the tape provided on the outer surface of the supporting unit to fix the non-adhesive portion of the tape. 2 . The adhesive tape removal apparatus according to claim 1 , wherein the sensing unit senses a color of the adhesive tape.

3. The tape removal device according to claim 1, wherein The sensing unit senses the adhesive tape attached to the end of the electrode roll rotated by the rotating roller, and The spray unit sprays air when the sensing unit senses the adhesive tape.

4. The adhesive tape removal device according to claim 3, wherein the adhesive tape includes an adhesive portion attached to an end of the electrode roll and the non-adhesive portion extending from the adhesive portion, the non-adhesive portion not attached to the electrode roll, and wherein the spray unit sprays air between the non-adhesion portion and an outer surface of the electrode roll. 5 . The adhesive tape removal apparatus according to claim 1 , wherein the clamp is provided with a sensor configured to sense the non-adherent portion of the adhesive tape. 6 . The adhesive tape removal apparatus according to claim 4 , wherein the rotating roller rotates in a state in which the non-adherent portion of the adhesive tape is fixed by the supporting unit and the clamp, thereby removing the adhered portion of the adhesive tape from the electrode roll.

7. The tape removal device according to claim 1, wherein The number of the spraying units and the number of the clamps are set to be equal to the number of the tapes, and The number of the adhesive tapes is two or more.

8. The adhesive tape removal apparatus according to claim 1, wherein a position of the spray unit is adjustable. 9 . The adhesive tape removal apparatus according to claim 1 , wherein the spray unit comprises a structure capable of adjusting a direction of spraying air.

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