Tape attaching apparatus

Abstract

The technical concept of the present invention relates to a tape attaching apparatus. The tape attaching apparatus is configured to attach a first tape to a first surface of a workpiece and attach a second tape to a second surface of the workpiece. The tape attaching apparatus includes a tape holder configured to attach a central portion of the first tape and a central portion of the second tape respectively to the workpiece and attach a peripheral portion of the first tape to a peripheral portion of the second tape, wherein the tape holder includes a first holder for supporting the first tape and a second holder for supporting the second tape.

Description

Tape attachment device

[0001] The present invention relates to a tape attaching device.

[0002] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0021738, filed February 15, 2024, and all contents of the document in that Republic of Korea patent application are incorporated herein by reference.

[0003] With technological developments and growing demand for mobile devices, the demand for secondary batteries is also rapidly increasing. Lithium secondary batteries, in particular, are widely used as a power source for various mobile devices and electronic products due to their high energy density, high operating voltage, and excellent storage and lifespan characteristics. Recently, as the application areas for secondary batteries have expanded, demand for higher-capacity secondary batteries has skyrocketed. To enhance the safety of these secondary batteries, taping, which involves attaching protective tape to the batteries, is being implemented.

[0004] The technical problem to be solved by the present invention is to provide a tape attachment device.

[0005] In order to solve the above-described problem, the technical idea of ​​the present invention provides a tape attaching device configured to attach a first tape to a first surface of a work object and a second tape to a second surface of the work object, the tape attaching device including a first holder for supporting the first tape and a second holder for supporting the second tape, the tape holder configured to attach a central portion of the first tape and a central portion of the second tape to the work object, respectively, and an outer portion of the first tape to an outer portion of the second tape; wherein the first holder includes a central portion for supporting the central portion of the first tape and an outer portion for supporting the outer portion of the first tape, the second holder includes a central portion for supporting the central portion of the second tape and an outer portion for supporting the outer portion of the second tape, and the support surface of the outer portion of the first holder includes a portion protruding from the support surface of the central portion of the first holder.

[0006] In exemplary embodiments, the support surface of the central portion of the first holder is characterized in that it has a greater flatness than the support surface of the outer portion of the first holder.

[0007] In exemplary embodiments, the support surface of the outer portion of the second holder is characterized by including a portion protruding from the support surface of the central portion of the second holder.

[0008] In exemplary embodiments, the support surface of the central portion of the second holder is characterized in that it has a greater flatness than the support surface of the outer portion of the second holder.

[0009] In exemplary embodiments, the support surface of the outer portion of the first holder includes a plurality of first protrusions, and the support surface of the outer portion of the second holder includes a plurality of second protrusions.

[0010] In exemplary embodiments, the plurality of first protrusions are characterized in that they are not vertically aligned with the plurality of second protrusions.

[0011] In exemplary embodiments, the support surface of the outer portion of the first holder includes a plurality of first protrusions, the support surface of the outer portion of the second holder includes a plurality of grooves, and the plurality of first protrusions are each characterized in that they are aligned vertically to a corresponding groove among the plurality of grooves.

[0012] In exemplary embodiments, the outer portion of the first holder is characterized by including a first foam pad in contact with the first tape.

[0013] In exemplary embodiments, the outer portion of the second holder is characterized by including a second foam pad in contact with the second tape.

[0014] In exemplary embodiments, at least one of the outer portion of the first holder and the outer portion of the second holder comprises a heater.

[0015] In order to solve the above-described problem, the technical idea of ​​the present invention provides a tape attachment device configured to attach a first tape to a first surface of a work object and to attach a second tape to a second surface of the work object, the tape attachment device including a first holder for supporting the first tape and a second holder for supporting the second tape, the tape holder configured to attach a central portion of the first tape and a central portion of the second tape to the work object, respectively, and to attach an outer portion of the first tape to an outer portion of the second tape; wherein the first holder includes a first central block for supporting the central portion of the first tape and a first outer block for supporting the outer portion of the first tape, and the first central block and the first outer block are configured to move independently.

[0016] In exemplary embodiments, the invention further comprises a first pressing device configured to press the first outer block toward the second holder.

[0017] In exemplary embodiments, the first outer block is characterized by including a first heater.

[0018] In exemplary embodiments, the second holder includes a second central block supporting the central portion of the second tape and a second outer block supporting the outer portion of the second tape, wherein the second central block and the second outer block are configured to move independently.

[0019] In exemplary embodiments, the first outer block comprises a first heater, and the second outer block comprises a second heater.

[0020] According to exemplary embodiments of the present invention, the adhesive pressure between the first tape and the second tape can be strengthened in a section where the first tape and the second tape are directly adhered.

[0021] According to exemplary embodiments of the present invention, the work target may be a joint portion between an electrode tab and an electrode lead of a battery cell joined by welding, and the first tape and the second tape may be configured to be attached to the joint portion between the electrode tab and the electrode lead of the battery cell, thereby protecting the joint portion between the electrode tab and the electrode lead of the battery cell. Since the adhesive strength between the first tape and the second tape is strengthened, damage to the battery cell due to poor adhesion between the first tape and the second tape can be prevented, and ultimately, the reliability of the battery cell can be improved.

[0022] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0023] FIGS. 1A and 1B are cross-sectional views showing a tape attachment device according to exemplary embodiments of the present invention.

[0024] FIGS. 2A and 2B are cross-sectional views showing a tape attachment device according to exemplary embodiments of the present invention.

[0025] FIGS. 3A and 3B are cross-sectional views showing a tape attachment device according to exemplary embodiments of the present invention.

[0026] FIGS. 4A and 4B are cross-sectional views showing a tape attachment device according to exemplary embodiments of the present invention.

[0027] FIGS. 5A and 5B are cross-sectional views showing a tape attachment device according to exemplary embodiments of the present invention.

[0028] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0029] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0030] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0031] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0032]

[0033] (Example 1)

[0034] FIGS. 1A and 1B are cross-sectional views showing a tape attachment device (10) according to exemplary embodiments of the present invention.

[0035] Referring to FIGS. 1A and 1B, the tape attachment device (10) may include a tape holder (100) configured to support a tape and attach the tape to a work target (310), and a stage (200) that supports the work target (310).

[0036] The tape holder (100) can attach a first tape (320) to a first side (311) of a work target (310) and attach a second tape (330) to a second side (313) of the work target (310). The first side (311) and the second side (313) of the work target (310) can be opposite to each other. The length of the first tape (320) along a horizontal direction (e.g., X direction) can be greater than the length of the work target (310) along a horizontal direction (e.g., X direction), and the first tape (320) can include a central portion (321) attached to the first side (311) of the work target (310) and an outer portion (323) not attached to the work target (310). The first tape (320) may include a pair of outer portions (323) spaced apart in a horizontal direction (e.g., in the X direction) with a center portion (321) therebetween. A length of the second tape (330) in a horizontal direction (e.g., in the X direction) may be greater than a length of the work object (310) in a horizontal direction (e.g., in the X direction), and the second tape (330) may include a center portion (331) attached to a second side (313) of the work object (310) and outer portions (333) not attached to the work object (310). The second tape (330) may include a pair of outer portions (333) spaced apart in a horizontal direction (e.g., in the X direction) with a center portion (331) therebetween. The tape holder (100) can attach the center (321) of the first tape (320) and the center (331) of the second tape (330) to the work target (310), and can attach the outer part (323) of the first tape (320) to the outer part (333) of the second tape (330).

[0037] The tape holder (100) may include a first holder (110) supporting a first tape (320) and a second holder (150) supporting a second tape (330). The first holder (110) may be placed above a workpiece (310), and the second holder (150) may be placed below the workpiece (310). The first holder (110) may be referred to as an upper holder, and the second holder (150) may be referred to as a lower holder. The first holder (110) and the second holder (150) may be aligned in a vertical direction (e.g., in the Z direction) and may be spaced apart in a vertical direction (e.g., in the Z direction) with the workpiece (310) mounted on the stage (200) therebetween.

[0038] At least one of the first holder (110) and the second holder (150) may be configured to move in a vertical direction (e.g., in the Z direction). The movement of the first holder (110) in the vertical direction (e.g., in the Z direction) and / or the movement of the second holder (150) in the vertical direction (e.g., in the Z direction) may be controlled by a lifting actuator. By the movement of the first holder (110) in the vertical direction (e.g., in the Z direction) and / or the movement of the second holder (150) in the vertical direction (e.g., in the Z direction), the distance between the first holder (110) and the second holder (150) may be adjusted.

[0039] The first holder (110) may be configured to support the first tape (320) by suction. The first tape (320) has opposite adhesive and non-adhesive surfaces, and the support surface of the first holder (110) may support the non-adhesive surface of the first tape (320). The first holder (110) may include a plurality of suction holes extending from the support surface supporting the non-adhesive surface of the first tape (320). A vacuum pump connected to the first holder (110) may depressurize the plurality of suction holes of the first holder (110) so that the first tape (320) is attached to the support surface of the first holder (110). The vacuum pump connected to the first holder (110) may release the vacuum exhaust for the plurality of suction holes of the first holder (110), thereby breaking the vacuum suction for the first tape (320).

[0040] The second holder (150) may be configured to support the second tape (330) by suction. The second tape (330) has opposite adhesive and non-adhesive surfaces, and the support surface of the second holder (150) may support the non-adhesive surface of the second tape (330). The second holder (150) may include a plurality of suction holes extending from the support surface supporting the non-adhesive surface of the second tape (330). A vacuum pump connected to the second holder (150) depressurizes the plurality of suction holes of the second holder (150) so that the second tape (330) is attached to the support surface of the second holder (150). The vacuum pump connected to the second holder (150) releases vacuum exhaust for the plurality of suction holes of the second holder (150), thereby breaking the vacuum suction for the second tape (330).

[0041] The first holder (110) may include a central portion (111) that supports the central portion (321) of the first tape (320) and an outer portion (113) that supports the outer portion (323) of the first tape (320). The first holder (110) may include a pair of outer portions (113) that are spaced apart in a horizontal direction (e.g., in the X direction) with the central portion (111) therebetween. The central portion (111) and the outer portion (113) of the first holder (110) may be referred to as a first central block and a first outer block, respectively.

[0042] The support surface (123) of the outer portion (113) of the first holder (110) may include a portion protruding from the support surface (121) of the central portion (111) of the first holder (110). In exemplary embodiments, the support surface (121) of the central portion (111) of the first holder (110) may be a flat surface, and the support surface (123) of the outer portion (113) of the first holder (110) may include an unflat surface. In exemplary embodiments, the flatness of the support surface (121) of the central portion (111) of the first holder (110) may be greater than the flatness of the support surface (123) of the outer portion (113) of the first holder (110). In exemplary embodiments, the support surface (123) of the outer portion (113) of the first holder (110) may have a step portion at the boundary with the support surface (121) of the central portion (111) of the first holder (110).

[0043] The second holder (150) may include a central portion (151) that supports the central portion (331) of the second tape (330) and an outer portion (153) that supports the outer portion (333) of the second tape (330). The second holder (150) may include a pair of outer portions (153) that are spaced apart in a horizontal direction (e.g., in the X direction) with the central portion (151) therebetween. The central portion (151) and the outer portion (153) of the second holder (150) may be referred to as a second central block and a second outer block, respectively.

[0044] The support surface (163) of the outer portion (153) of the second holder (150) may include a portion protruding from the support surface (161) of the central portion (151) of the second holder (150). In exemplary embodiments, the support surface (161) of the central portion (151) of the second holder (150) may be a flat surface, and the support surface (163) of the outer portion (153) of the second holder (150) may include an unflat surface. In exemplary embodiments, the flatness of the support surface (161) of the central portion (151) of the second holder (150) may be greater than the flatness of the support surface (163) of the outer portion (153) of the second holder (150). In exemplary embodiments, the support surface (163) of the outer portion (153) of the second holder (150) may have a step portion at the boundary with the support surface (161) of the central portion (151) of the second holder (150).

[0045] In exemplary embodiments, the support surface (123) of the outer portion (113) of the first holder (110) may include a plurality of first protrusions (131) and may have an overall uneven structure. In exemplary embodiments, the support surface (163) of the outer portion (153) of the second holder (150) may include a plurality of second protrusions (171) and may have an overall uneven structure. In exemplary embodiments, the plurality of second protrusions (171) may be arranged so as not to be aligned with the plurality of first protrusions (131) in a vertical direction (e.g., in the Z direction). For example, the plurality of first protrusions (131) may be offset with the plurality of second protrusions (171) in a horizontal direction (e.g., in the X direction and / or the Y direction).

[0046] Hereinafter, with reference to FIGS. 1a and 1b, an exemplary tape attachment method using a tape attachment device (10) will be described.

[0047] Referring to FIG. 1a, the first holder (110) adsorbs and supports the non-adhesive surface of the first tape (320), and the second holder (150) adsorbs and supports the non-adhesive surface of the second tape (330).

[0048] Supporting the first tape (320) by suction with the first holder (110) may include a step of gripping the first tape fabric provided from the first tape supply section with the first tape extractor, a step of moving the first tape fabric with the first tape extractor so that the first tape fabric is positioned below the first holder (110), a step of applying vacuum pressure to the suction hole of the first holder (110) to suction the first tape fabric to the support surface of the first holder (110), and a step of cutting the first tape fabric portion between the first holder (110) and the first tape supply section with the first cutter.

[0049] Supporting the second tape (330) by suction with the second holder (150) may include a step of gripping the second tape fabric provided from the second tape supply section with the second tape extractor, a step of moving the second tape fabric with the second tape extractor so that the second tape fabric is positioned on the second holder (150), a step of applying vacuum pressure to the suction hole of the second holder (150) to suction the second tape fabric to the support surface of the second holder (150), and a step of cutting the second tape fabric portion between the second holder (150) and the second tape supply section with the second cutter.

[0050] Referring to FIG. 1B, the first holder (110) is lowered so that the first tape (320) comes into contact with the work target (310) mounted on the stage (200), and the second holder (150) is raised so that the second tape (330) comes into contact with the work target (310) mounted on the stage (200). The tape holder (100) forms an appropriate adhesive pressure between the first holder (110) and the second holder (150), thereby attaching the center (321) of the first tape (320) and the center (331) of the second tape (330) to the work target (310), and attaching the outer portion (323) of the first tape (320) to the outer portion (333) of the second tape (330).

[0051] According to the tape attachment device according to the comparative example, the support surfaces of the upper holder and the lower holder may each be entirely flat. In this case, during the tape attachment process of attaching two tapes (i.e., the upper tape and the lower tape) to each workpiece, the adhesive pressure formed between the upper holder and the lower holder in the section where the two tapes are directly bonded may be insufficient, resulting in unstable adhesion between the two tapes.

[0052] According to exemplary embodiments of the present invention, since the support surface (123) of the outer portion (113) of the first holder (110) and / or the support surface (163) of the outer portion (153) of the second holder (150) have a protruding portion, the adhesive pressure between the first tape (320) and the second tape (330) can be strengthened in the section where the first tape (320) and the second tape (330) are directly bonded without changing the adhesive pressure between the first tape (320) and the workpiece (310) and the adhesive pressure between the second tape (330) and the workpiece (310). Accordingly, since the adhesive force between the first tape (320) and the second tape (330) is strengthened, the bonding between the first tape (320) and the second tape (330) can be suppressed from being broken.

[0053] In exemplary embodiments, the plurality of first protrusions (131) of the support surface (123) of the outer portion (113) of the first holder (110) and the plurality of second protrusions (171) of the support surface (163) of the outer portion (153) of the second holder (150) may be misaligned in the vertical direction (e.g., the Z direction). In this case, during the tape attachment process, the adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330) may be strengthened, thereby strengthening the adhesive force between the first tape (320) and the second tape (330).

[0054] In exemplary embodiments, at least one of the outer portion (113) of the first holder (110) and the outer portion (153) of the second holder (150) may include a heater configured to apply heat to enhance adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330).

[0055] In exemplary embodiments, the work target (310) may be a joint portion between an electrode tab and an electrode lead of a battery cell joined by welding. The first tape (320) and the second tape (330) may be attached to the joint portion between the electrode tab and the electrode lead of the battery cell, and configured to protect the joint portion between the electrode tab and the electrode lead of the battery cell. According to exemplary embodiments of the present invention, since the adhesive strength between the first tape (320) and the second tape (330) is strengthened, damage to the battery cell due to poor adhesion between the first tape (320) and the second tape (330) can be prevented, and ultimately, the reliability of the battery cell can be improved.

[0056]

[0057] (Example 2)

[0058] FIGS. 2A and 2B are cross-sectional views illustrating a tape attachment device (11) according to exemplary embodiments of the present invention. Hereinafter, the tape attachment device (11) illustrated in FIGS. 2A and 2B will be described, focusing on differences from the tape attachment device (10) described with reference to FIGS. 1A and 1B.

[0059] Referring to FIGS. 2A and 2B, in the tape holder (100A) of the tape attachment device (11), the support surface (123A) of the outer portion (113) of the first holder (110A) may include a plurality of first protrusions (131), and the support surface (163A) of the outer portion (153) of the second holder (150A) may include a plurality of grooves (173). Each of the plurality of first protrusions (131) may be aligned vertically (e.g., in the Z direction) to a corresponding one of the plurality of grooves (173). In this case, during the tape attachment process, the adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330) may be strengthened, thereby strengthening the adhesive force between the first tape (320) and the second tape (330).

[0060]

[0061] (Example 3)

[0062] FIGS. 3A and 3B are cross-sectional views illustrating a tape attachment device (12) according to exemplary embodiments of the present invention. Hereinafter, the tape attachment device (12) illustrated in FIGS. 3A and 3B will be described, focusing on differences from the tape attachment device (10) described with reference to FIGS. 1A and 1B.

[0063] Referring to FIGS. 3A and 3B, in the tape holder (100B) of the tape attaching device (12), at least one of the outer portion (113) of the first holder (110B) and the outer portion (153) of the second holder (150B) may include a foam pad. The foam pad may have pores therein. The foam pad has a compressible characteristic, and when an external force is applied, the thickness of the foam pad decreases from the initial thickness, and when the external force is released, the thickness of the foam pad may be restored to the initial thickness.

[0064] In exemplary embodiments, the outer portion (113) of the first holder (110B) may include a first foam pad (135) that contacts the outer portion (323) of the first tape (320). For example, the first holder (110B) may include a body including a center portion and an outer portion, and a first foam pad (135) connected to the outer portion of the body of the first holder (110B). At this time, when vacuum pressure is applied to the suction hole of the body of the first holder (110B), the first tape (320) may be attached to the first foam pad (135) by the suction force provided through the first foam pad (135). The support surface (123B) of the outer portion (113) of the first holder (110B) may include the surface of the first foam pad (135).

[0065] In exemplary embodiments, the outer portion (153) of the second holder (150B) may include a second foam pad (175) that contacts the outer portion (333) of the second tape (330). For example, the second holder (150B) may include a body including a center portion and an outer portion, and a second foam pad (175) connected to the outer portion of the body of the second holder (150B). At this time, when vacuum pressure is applied to the suction hole of the body of the second holder (150B), the second tape (330) may be attached to the second foam pad (175) by the suction force provided through the second foam pad (175). The support surface (163B) of the outer portion (153) of the second holder (150B) may include the surface of the second foam pad (175).

[0066] During the tape attachment process, the adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330) sandwiched between the first foam pad (135) and the second foam pad (175) is strengthened, thereby strengthening the adhesive force between the first tape (320) and the second tape (330).

[0067]

[0068] (Example 4)

[0069] FIGS. 4A and 4B are cross-sectional views illustrating a tape attachment device (13) according to exemplary embodiments of the present invention. Hereinafter, the tape attachment device (13) illustrated in FIGS. 4A and 4B will be described, focusing on differences from the tape attachment device (10) described with reference to FIGS. 1A and 1B.

[0070] Referring to FIGS. 4A and 4B, in the tape holder (100C) of the tape attaching device (13), the first holder (110C) may include a central portion (111A) and an outer portion (113A) that are separated so as to be independently movable, and the second holder (150C) may include a central portion (151A) and an outer portion (153A) that are separated so as to be independently movable. The central portion (111A) and the outer portion (113A) of the first holder (110C) may be referred to as a first central block and a first outer block, respectively, and the central portion (151A) and the outer portion (153A) of the second holder (150C) may be referred to as a second central block and a second outer block, respectively.

[0071] The tape attachment device (13) may include a pressing device (180) configured to control the adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330) between the outer portion (113A) of the first holder (110C) and the outer portion (153A) of the second holder (150C). The pressing device (180) may be connected to the outer portion (113A) of the first holder (110C) and configured to press the outer portion (113A) of the first holder (110C) toward the support surface of the second holder (150C).

[0072] During the tape attachment process, the pressing device (180) can press the outer portion (113A) of the first holder (110C) toward the second holder (150C) so as to strengthen the adhesive pressure between the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330), thereby strengthening the adhesive force between the first tape (320) and the second tape (330).

[0073]

[0074] (Example 5)

[0075] FIGS. 5A and 5B are cross-sectional views illustrating a tape attachment device (14) according to exemplary embodiments of the present invention. Hereinafter, the tape attachment device (14) illustrated in FIGS. 5A and 5B will be described, focusing on differences from the tape attachment device (13) described with reference to FIGS. 4A and 4B.

[0076] Referring to FIGS. 5A and 5B, in the tape holder (100D) of the tape attachment device (14), at least one of the outer portion (113A) of the first holder (110D) and the outer portion (153A) of the second holder (150D) may include a heater. For example, the heater may be an electrical resistance heater and may include a heating electrode configured to heat by heating power applied from an external heating power source.

[0077] In exemplary embodiments, the outer portion (113A) of the first holder (110D) may include a first heater (137). For example, the first heater (137) may be embedded within the outer portion (113A) of the first holder (110D).

[0078] In exemplary embodiments, the outer portion (153A) of the second holder (150D) may include a second heater (177). For example, the second heater (177) may be embedded within the outer portion (153A) of the second holder (150D).

[0079] During the tape attachment process, at least one of the first heater (137) and the second heater (177) can apply heat to the outer portion (323) of the first tape (320) and the outer portion (333) of the second tape (330), thereby strengthening the adhesive strength between the first tape (320) and the second tape (330).

[0080]

[0081] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

1. A tape attachment device configured to attach a first tape to a first surface of a work target and to attach a second tape to a second surface of the work target, A tape holder comprising a first holder for supporting the first tape and a second holder for supporting the second tape, and configured to attach the center of the first tape and the center of the second tape to the work target, respectively, and to attach the outer portion of the first tape to the outer portion of the second tape; Including, The first holder includes a central portion supporting the central portion of the first tape and an outer portion supporting the outer portion of the first tape, The second holder includes a central portion supporting the central portion of the second tape and an outer portion supporting the outer portion of the second tape, A tape attachment device characterized in that the support surface of the outer portion of the first holder includes a portion protruding from the support surface of the central portion of the first holder.

2. In paragraph 1, A tape attachment device characterized in that the support surface of the central portion of the first holder has a greater flatness than the support surface of the outer portion of the first holder.

3. In paragraph 1, A tape attachment device characterized in that the support surface of the outer portion of the second holder includes a portion protruding from the support surface of the central portion of the second holder.

4. In paragraph 3, A tape attachment device characterized in that the support surface of the central portion of the second holder has a greater flatness than the support surface of the outer portion of the second holder.

5. In paragraph 1, The support surface of the outer portion of the first holder includes a plurality of first protrusions, A tape attachment device characterized in that the support surface of the outer portion of the second holder includes a plurality of second protrusions.

6. In paragraph 5, A tape attachment device characterized in that the plurality of first protrusions are not aligned vertically with the plurality of second protrusions.

7. In paragraph 1, The support surface of the outer portion of the first holder includes a plurality of first protrusions, The support surface of the outer portion of the second holder includes a plurality of grooves, A tape attachment device characterized in that each of the plurality of first protrusions is aligned vertically to a corresponding groove among the plurality of grooves.

8. In paragraph 1, A tape attachment device characterized in that the outer portion of the first holder includes a first foam pad that comes into contact with the first tape.

9. In paragraph 8, A tape attachment device characterized in that the outer portion of the second holder includes a second foam pad that contacts the second tape.

10. In paragraph 1, A tape attachment device characterized in that at least one of the outer portion of the first holder and the outer portion of the second holder includes a heater.

11. A tape attachment device configured to attach a first tape to a first surface of a work target and a second tape to a second surface of the work target, A tape holder comprising a first holder for supporting the first tape and a second holder for supporting the second tape, and configured to attach the center of the first tape and the center of the second tape to the work target, respectively, and to attach the outer portion of the first tape to the outer portion of the second tape; Including, The first holder includes a first center block supporting the center of the first tape and a first outer block supporting the outer portion of the first tape, A tape attachment device characterized in that the first center block and the first outer block are configured to move independently.

12. In paragraph 11, A tape attaching device further comprising a first pressing device configured to press the first outer block toward the second holder.

13. In paragraph 11, A tape attachment device, characterized in that the first outer block includes a first heater.

14. In paragraph 11, The second holder includes a second center block supporting the center of the second tape and a second outer block supporting the outer portion of the second tape, A tape attachment device characterized in that the second center block and the second outer block are configured to move independently.

15. In paragraph 14, The first outer block includes a first heater, A tape attachment device, characterized in that the second outer block includes a second heater.

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