Tape reel

Abstract

A tape reel according to the present invention comprises a shaft part that has a cylindrical outer circumferential surface, a pair of flange parts that are respectively provided at one and the other end of the shaft part, a string that is fed from the outer circumferential surface of the shaft part, and a connection part that detachably connects the string and a carrier tape.

Description

Tape reel

[0001] The present invention relates to a tape reel.

[0002] Tape reels are used as core materials around which carrier tapes that accommodate a large number of components are wound. Patent Document 1 discloses a feeder that feeds and moves carrier tapes that are unwound from tape reels. Tape reels come in a variety of types with different flange widths and diameters to accommodate carrier tapes that vary in width, thickness, cavity shape, etc. depending on the various components.

[0003] International Publication No. 2017 / 098628

[0004] Feeder may have a limit on the diameter of the tape reel that can be used. Also, a single carrier tape may be divided to simultaneously supply the same type of components to multiple feeders. In such cases, the carrier tape wound on a specific tape reel is rewound onto another tape reel. In this case, depending on the method of connecting the end of the carrier tape to the tape reel and the type of carrier tape, a load may be applied to the carrier tape, potentially applying external force to components housed near the connection site.

[0005] An object of the present specification is to provide a tape reel that can reduce the load on the carrier tape being wound and prevent external force from being applied to components during the winding operation.

[0006] This specification discloses a tape reel comprising a shaft portion having a cylindrical outer peripheral surface, a pair of flange portions provided at both ends of the shaft portion, a string that is unwound from the outer peripheral surface of the shaft portion, and a connecting portion that detachably connects the string and carrier tape.

[0007] This specification also discloses the technical idea of ​​changing "the tape reel according to claim 1 or 2" in claim 4 originally filed to "the tape reel according to any one of claims 1 to 3," and the technical idea of ​​changing "the tape reel according to claim 1 or 2" in claim 6 originally filed to "the tape reel according to any one of claims 1 to 5." This specification also discloses the technical idea of ​​changing "the tape reel according to claim 1 or 2" in claim 8 originally filed to "the tape reel according to any one of claims 1 to 7," the technical idea of ​​changing "the tape reel according to claim 8" in claim 10 originally filed to "the tape reel according to claim 8 or 9," and the technical idea of ​​changing "the tape reel according to claim 10" in claim 12 originally filed to "the tape reel according to claim 10 or 11."

[0008] With this configuration, the wound carrier tape is connected to the shaft portion via the string, which reduces the load on the carrier tape, preventing deformation of the carrier tape and preventing external force from being applied to the housed components.

[0009] FIG. 1 is a side view showing the appearance of a feeder that accommodates tape reels. FIG. 2 is a perspective view showing a portion of a carrier tape. FIG. 3 is a diagram showing a procedure for dividing a carrier tape. FIG. 4 is an enlarged side view showing a state in which a carrier tape is wound around a tape reel that does not have a holding unit. FIG. 5 is an enlarged side view showing a state in which a carrier tape is wound around a tape reel that has a holding unit. FIG. 6 is a perspective view showing a first mode of a connecting portion. FIG. 7 is a perspective view showing a second mode of a connecting portion. FIG. 8 is a perspective view showing a third mode of a connecting portion. FIG. 9 is a perspective view showing a fourth mode of a connecting portion. FIG. 10 is an enlarged side view showing a state in which a string is wound around a holding unit.

[0010] 1. Overview of Tape Reel 30 The tape reel 30 is used as a core around which a carrier tape 60 containing a large number of components is wound. For example, as shown in FIG. 1, the tape reel 30 is housed in a feeder 20 and used to supply components to a component mounting machine 10. Note that hereinafter, the "tape reel" may also be simply referred to as a "reel."

[0011] 2. Configuration of Feeder 20 The configuration of feeder 20 will be described with reference to Fig. 1. The left-right direction in Fig. 1 is the transport direction of carrier tape 60, with the left side of Fig. 1 being the upstream side in the transport direction and the right side of Fig. 1 being the downstream side in the transport direction. In this embodiment, feeder 20 is a tape feeder that performs a supply operation to supply components by feeding and moving carrier tape 60.

[0012] The feeder 20 includes a feeder body 21. The feeder body 21 is formed in a flat box shape. The feeder body 21 is formed so as to be able to supply components to a component supply position Ps located at an upper portion on the downstream side in the conveyance direction of the carrier tape 60. The feeder body 21 is formed with a tape conveyance path 211 that guides the carrier tape 60 pulled out from the reel 30 to the component supply position Ps. The tape conveyance path 211 is formed in a rectangular cylindrical shape using, for example, a bottom plate, two side plates, and a ceiling plate.

[0013] The tape transport path 211 may also have a tape presser that presses the carrier tape 60 against the bottom plate. The tape transport path 211 may also have a portion of its cylindrical shape omitted. The tape transport path 211 starts at a position close to the reel 30, extends diagonally upward in the downstream direction, extends roughly horizontally in the downstream direction from midway, and ends at an upper portion of the downstream end of the feeder main body 21. A position close to the end of the tape transport path 211 is the component supply position Ps. The feeder main body 21 is mounted on the feeder holder 11 of the component mounting machine 10. When mounted on the feeder holder 11, the feeder 20 is supplied with power and is connected to be able to communicate with the control device of the component mounting machine 10.

[0014] The feeder 20 includes a drive unit 23 that feeds and moves the carrier tape 60 during component supply operations. The drive unit 23 has a sprocket 231 rotatably supported on the feeder body 21. Teeth of the sprocket 231 protrude from grooves formed in the bottom plate of the tape transport path 211 and engage with feed holes 66 formed at predetermined intervals in the carrier tape 60. The drive unit 23 has an electric motor 232 that generates driving force that is transmitted to the sprocket 231 via a speed reducer (not shown). The motor 232 is capable of intermittent and continuous operation and is switchable between forward and reverse rotation. The drive unit 23 rotates the sprocket 231 with the motor 232 to feed and move the carrier tape 60.

[0015] Feeder 20 includes tape guide 24. Tape guide 24 is detachably mounted on the top of feeder body 21. Tape guide 24 peels one widthwise end of base tape 61 from carrier tape 60, thereby opening cavities 65 that individually accommodate components. Opened cavities 65 are transported to component supply position Ps, exposing the accommodated components so that they can be picked up. After that, base tape 61 is discharged below feeder 20, along with base tape 61 that has passed above tape guide 24.

[0016] The feeder 20 includes a reel holding section 22. The reel holding section 22 replaceably holds the reel 30 around which the carrier tape 60 is wound. The reel holding section 22 rotatably holds the outer periphery or the center of the reel 30. In this embodiment, the reel holding section 22 prevents the reel 30 from slipping out of position by using an openable and closable holding cover.

[0017] 3. Structure of Carrier Tape 60 The carrier tape 60 is a tape that accommodates multiple components 69. The components 69 are components to be mounted on a substrate, and range from very small components such as 0201 size (0.2 mm x 0.1 mm) to large components. As shown in FIG. 2 , the carrier tape 60 has a base tape 61 and a cover tape 62.

[0018] The base tape 61 has a plurality of cavities 65 that individually accommodate components 69. The base tape 61 is made of a flexible material such as a resin material or a paper material. The carrier tape 60 includes a type in which the cavities 65 are contained within the thickness of the flat portion of the base tape 61, as well as an embossed type in which the cavities 65 protrude downward from the flat portion, as shown in FIG. 2. The cavities 65 are open on the top surface of the base tape 61. The cavities 65 are arranged in a row at predetermined intervals in the longitudinal direction of the tape.

[0019] The base tape 61 is provided with a plurality of feed holes 66. The feed holes 66 engage with the sprocket 231 of the feeder 20. The feed holes 66 are formed in a substantially circular or elliptical shape. The feed holes 66 are provided in a row in the tape longitudinal direction at predetermined intervals. The feed holes 66 are arranged in a row in the tape longitudinal direction on one side in the tape width direction (for example, the left side in the tape feed direction).

[0020] The cover tape 62 is a tape that closes the opening of the cavity 65 to prevent the component 69 from popping out. The cover tape 62 is made of, for example, a transparent polymer film. The cover tape 62 is adhered to the upper surface of the base tape 61 on both sides of the cavity 65 in the width direction so as to avoid the opening of the cavity 65. The cover tape 62 is formed so as to exclude the portion where the feed holes 66 are provided.

[0021] 4. Tape Reel Configuration 4-1. Shaft Portion 31 and Flange Portion 32 The reel 30 is used as a core around which the carrier tape 60 is wound. As shown in FIG. 3, the reel 30 includes a shaft portion 31. The shaft portion 31 is a central core around which the carrier tape 60 is wound. The shaft portion 31 is formed in a cylindrical shape and has an axial length sufficient to hold the carrier tape 60. As shown in FIG. 5, the shaft portion 31 has multiple slits 312 opening in its outer circumferential surface 311. The slits 312 are formed in a tapered shape such that the circumferential width of the shaft portion 31 gradually decreases from the radially inner side to the radially outer side of the shaft portion 31. In this embodiment, four slits 312 are formed at equal intervals (90 degrees) around the circumference. The shaft portion 31 is formed, for example, from a resin material.

[0022] The reel 30 includes a pair of flanges 32. The flanges 32 are disk members provided on both ends of the shaft 31. In this embodiment, the flanges 32 are arranged concentrically with the shaft 31. The pair of flanges 32 face each other and are spaced apart in the axial direction of the shaft 31, i.e., in the reel width direction. The pair of flanges 32 are arranged to sandwich the carrier tape 60 wound around the shaft 31 from both sides. The distance between the pair of flanges 32 (flange width) is set corresponding to the tape width of the carrier tape 60. The flanges 32 are formed, for example, from a resin material or a paper material such as cardboard.

[0023] The flange portion 32 is formed with a retaining hole 321 for holding the reel 30 and a plurality of locking grooves 322. The retaining hole 321 is a through-hole used by the feeder 20, an external setup device, a reel warehouse, etc. to hold the reel 30. The retaining hole 321 communicates with a retaining hole (not shown) in the shaft portion 31. The locking grooves 322 are formed in the pair of flange portions 32, extending radially outward. In this embodiment, the reel 30 has three locking grooves 322 formed at equal intervals (120 degrees) around the circumference. The locking grooves 322 are used to prevent the reel 30 from rotating, for example.

[0024] The carrier tape 60 generally has a tape width that is determined as a standard in advance, such as 4 mm, 8 mm, 12 mm, 16 mm, or 24 mm. The carrier tape 60 is available in types with a flat base tape 61 and the embossed type, and the width, thickness, and shape of the cavity 65 vary depending on the components to be housed. There are multiple types of reels 30 with different flange widths and diameters to accommodate the various carrier tapes 60.

[0025] 4-2. Holding Unit 40 4-2-1. Overview of Holding Unit 40 As shown in FIG. 5, the reel 30 includes a holding unit 40 that holds the end of the carrier tape 60. In this embodiment, the holding unit 40 is detachably attached to the shaft 31. Note that a feeder may have a set upper limit on the diameter of the reel that can be used. Specifically, as shown in FIG. 1, in a type that houses the reel 30 internally, the diameter is set to, for example, 13 inches or less so that the reel 30 can fit inside the feeder body 21. Therefore, if the carrier tape 60 containing a specific type of component is wound on a reel with a diameter larger than 13 inches (e.g., 15 inches), it becomes necessary to rewind it onto a reel with a diameter of 13 inches or less.

[0026] Furthermore, the carrier tape 60 wound around the reel 30 can accommodate a large number of components depending on the length of the carrier tape 60 and the pitch of the cavities 65. However, depending on the type of product board to be produced and the mounting processes assigned to each of the multiple component mounting machines, it may be necessary to supply the same type of components from multiple feeders 20 at the same time. In such cases, it may be necessary to divide one roll of carrier tape 60 into multiple pieces for use due to circumstances such as the components being relatively expensive or being consumed infrequently compared to the number in stock. In such cases, it may also be necessary to rewind the components by winding them onto multiple reels.

[0027] A tape rewinding device, for example, is used to wind the carrier tape 60. The tape rewinding device synchronously rotates the reels 30 held by the two reel holding portions. In this way, the tape rewinding device moves the carrier tape 60 a predetermined length between the two reels 30. In the winding operation accompanying the change in reel size described above, as shown in FIG. 3, all of the carrier tape 60 is wound by moving it from the 15-inch reel 30A to another spare reel 30B. Next, the carrier tape 60 is wound from the spare reel 30B onto each of the multiple 13-inch reels by moving it a predetermined length.

[0028] Incidentally, trailer sections 68 are formed on both ends of the new carrier tape 60 (see FIG. 4). The trailer sections 68 are set to a length within a specified range (e.g., 160 mm), and are sections in which cavities 65 within the specified range do not house components 69. In FIG. 4, cavities 65 that house components 69 are shown with diagonal lines, while cavities 65 that do not house components 69 are shown without diagonal lines. The trailer section 68 on the terminal side is connected to the shaft section 31 of the reel 30 by inserting the end into a slit 312, as shown in FIG. 4.

[0029] The connection between the trailer portion 68 on the terminal end side and the shaft portion 31 is severed when the carrier tape 60 is unwound from the reel 30, the portion wound around the shaft portion 31 disappears, and a predetermined tension is applied to further feed and move the carrier tape 60. Specifically, the terminal end inserted into the slit 312 is pulled out, and the carrier tape 60 is released from the reel 30.

[0030] Here, the first tape 60A having the trailer portion 68 of the carrier tape 60 to be rewound can be wound onto the 13-inch reel 30C by connecting the trailer portion 68 to the shaft portion 31, as shown in Figure 4. Furthermore, even if the cavity 65 of the trailer portion 68 is crushed toward the center of the shaft portion 31 due to the tension during winding, the component 69 is not housed in the cavity 65, and therefore deformation of the component 69 will not occur.

[0031] On the other hand, the second tape 60B of the carrier tape 60 that has been separated from the first tape 60A does not have a trailer portion 68 at its end. Therefore, if the end is inserted into the slit 312 and connected to the shaft portion 31, as with the first tape 60A, the tension applied during winding may apply a load to the carrier tape 60, which may crush the cavities 65 that house the components. This may apply an external force to the components 69 housed in the cavities 65, which may cause the components 69 to deform.

[0032] Therefore, the reel 30 of this embodiment is configured to reduce the load on the wound carrier tape 60 and prevent external force from being applied to components during the winding operation. Specifically, the reel 30 includes a string 42 and a connection portion 43. In this embodiment, the string 42 and the connection portion 43 constitute a holding unit 40 that holds the end of the carrier tape 60.

[0033] 4-2-2. Configuration of the Holding Unit 40 The holding unit 40 includes a unit body 41. The unit body 41 is formed in a cylindrical shape with a bottom. As shown in FIGS. 5 and 10 , the unit body 41 is placed in a tapered slit 312 so that the axial direction of the unit body 41 is parallel to the axial direction of the shaft portion 31. The outer dimensions of the unit body 41 are smaller than the width of the opening of the slit 312, and the unit body 41 is prevented from slipping out of the slit 312.

[0034] The holding unit 40 includes a string 42 that is unwound from the outer circumferential surface 311 of the shaft 31. In this embodiment, the string 42 is unwound from one of four slits 312 that open in the outer circumferential surface 311 of the shaft 31, as shown in FIG. 5 . The string 42 is a flexible, long member, one end of which is fixed directly or indirectly to the shaft 31. In this embodiment, the string 42 is an auxiliary tape 42A that is formed in a band shape. Note that the string 42 may also be an auxiliary wire that has a circular or elliptical cross section.

[0035] The holding unit 40 includes a connection portion 43 that detachably connects the string 42 and the carrier tape 60. The connection portion 43 is provided on the other end of the string 42 and connects the end of the carrier tape 60 wound around the reel 30 to the string 42. As a result, the carrier tape 60 is linked to the shaft portion 31 of the reel 30 via the connection portion 43 and the string 42. At this time, the string 42 and the connection portion 43 have a predetermined length (e.g., 160 mm) from the outer circumferential surface 311 of the shaft portion 31, and function as a pseudo trailer portion.

[0036] Various embodiments can be adopted for the above-described connecting portion 43. In a first embodiment, as shown in FIG. 6 , the connecting portion 43 has a chuck 43A that clamps the carrier tape 60 from both sides in the thickness direction. The chuck 43A can change the pair of gripping claws 43A1 from an open state to a closed state by retracting the pair of gripping claws 43A1 into the holder 43A2. At this time, the end portion of the carrier tape 60 is clamped between the pair of gripping claws 43A1, thereby causing the chuck 43A to be in a gripping state.

[0037] The connection portion 43 is configured to release the carrier tape 60 when a predetermined tension is applied to the carrier tape 60 while the string 42 and the carrier tape 60 are connected. Specifically, when a predetermined tension is applied to the chuck 43A, the pair of gripping claws 43A1 are pulled out from the holder 43A2. Accordingly, the pair of gripping claws 43A1 transition from a closed state to an open state, and the chuck 43A releases the end portion of the carrier tape 60. This causes the carrier tape 60 to detach from the chuck 43A.

[0038] The above-mentioned "predetermined tension" is set so that when the carrier tape 60 is unwound from the reel 30 and the portion wound around the shaft 31 is removed, an external force applied to further feed and move the carrier tape 60 causes the carrier tape 60 to detach from the connection part 43. In other words, the predetermined tension is set to be higher than the tension generated by the weight of the unwound carrier tape 60 at the portion located between the connection part 43 and the tape transport path 211 of the feeder 20, and lower than the maximum tension that can be applied to the carrier tape 60 when the feeder 20 feeds and moves the carrier tape 60.

[0039] In the first mode of the connecting portion 43, the predetermined tension is appropriately adjusted by the elastic force that tries to open the pair of gripping claws 43A1 and the sliding resistance that varies depending on the shapes of the pair of gripping claws 43A1 and the holder 43A2, etc. The connecting portion 43 may have a hook 43B that engages with an engaging hole 81 provided on the carrier tape 60 side instead of or in addition to the chuck 43A as described above.

[0040] In a second embodiment of the connection portion 43, the locking hole 81 is a feed hole 66 that engages with a sprocket 231 of the feeder 20 when the carrier tape 60 is fed by the feeder 20, as shown in Fig. 7. In a third embodiment of the connection portion 43, the locking hole 81 is a perforation 67 formed in the carrier tape 60 and dedicated to the hook 43B, as shown in Fig. 8. The perforation 67 is formed in the center of the base tape 61 in the width direction by, for example, a manual or automatic puncher.

[0041] In a fourth aspect of the connection portion 43, as shown in Fig. 9, the locking hole 81 is a through hole 73 formed in an extension tape 70 attached to the carrier tape 60. The extension tape 70 is a member dedicated to winding, for example, the divided carrier tape 60, and has an adhesive portion 71 with an adhesive bottom side that allows it to be attached to the top surface of the carrier tape 60, and a non-adhesive portion 72 that has non-adhesive surfaces on both sides and extends longitudinally beyond the end of the carrier tape 60. The extension tape 70 also has a through hole 73 formed in the non-adhesive portion 72, allowing the hook 43B to be inserted therethrough.

[0042] Here, in an embodiment in which the connecting portion 43 has a hook 43B, the carrier tape 60 may be configured to be released from the hook 43B when a predetermined tension is applied to the carrier tape 60. For example, in the second and third embodiments of the connecting portion 43, a notch may be formed in advance in at least a portion from the locking hole 81 to the terminal edge of the carrier tape 60, and when a predetermined tension is applied, the hook 43B passes from the locking hole 81 through the notch, thereby releasing the carrier tape 60 from the hook 43B. Furthermore, in a fourth embodiment of the connecting portion 43, the same configuration as above may be adopted, or the adhesive portion 71 and the non-adhesive portion 72 may be separated so that the carrier tape 60 is released from the hook 43B.

[0043] As described above, the holding unit 40 of this embodiment is set on the inner periphery of the shaft 31 (radially inward from the outer periphery 311), and the string 42 is unwound from the outer periphery 311 of the shaft 31 through the slit 312. In this type of reel 30 configuration, if the string 42 or the connection portion 43 moves loosely when the holding unit 40 is not in use, this could interfere with other components or reduce the operability of various tasks. Therefore, in this embodiment, the holding unit 40 has a winding mechanism 50 that winds up the string 42.

[0044] As shown in Fig. 10 , a general winding mechanism can be applied to the winding mechanism 50. In this embodiment, the winding mechanism 50 has a drum 51 and a spiral spring 52. The drum 51 is rotatably mounted on the unit main body 41 around a drum shaft 511. This allows the drum 51 to rotate relative to the shaft portion 31. The spiral spring 52 applies a biasing force that rotates the drum 51 in one rotational direction (counterclockwise in Fig. 10 ).

[0045] One end of the string 42 is fixed to the outer peripheral surface of the drum 51, and is wound around the drum 51 as the drum 51 rotates in one direction. When tension is applied to the string 42, the drum 51 rotates in the other direction against the elastic force of the spiral spring 52, and the string 42 is pulled out from the holding unit 40. In an initial state in which no tension is applied to the string 42, the string 42 is wound, and at least a portion of the connection portion 43 is housed inside the slit 312. When the string 42 is wound (initial state), the winding mechanism 50 causes at least a portion of the connection portion 43 to protrude from the outer peripheral surface 311 of the shaft portion 31.

[0046] The amount of protrusion 85 by which the tip of the connecting portion 43 protrudes from the outer circumferential surface 311 is preferably such that the connecting portion 43 does not get in the way when winding the carrier tape 60 onto the reel 30 without using the holding unit 40, and is also such that the connecting portion 43 is easy for an operator to grasp and pull out. The amount of protrusion 85 is adjusted by the set position of the holding unit 40, the rotation of the drum 51 relative to the unit main body 41, and the like. This improves the workability of the winding operation.

[0047] In this way, by providing the reel 30 with the string 42 and the connecting portion 43, even if the carrier tape 60 does not have a trailer portion 68 during the winding operation, the string 42 connected to the shaft portion 31 and the carrier tape 60 can be detachably connected by the connecting portion 43. As a result, as shown in Figure 5, the string 42 and the connecting portion 43 function as a pseudo trailer portion, and it is possible to prevent external force from being applied to the components 69 housed in the cavities 65 near the end of the carrier tape 60.

[0048] 5. Modifications to the Embodiment The winding mechanism 50 of the holding unit 40 may have a locking mechanism that locks the winding of the string 42. This may improve the ease of winding. In addition, although the winding mechanism 50 is configured to automatically wind the string 42 when tension on the string 42 is released, it may also be configured to wind the string manually, for example, without the spiral spring 52. Furthermore, the reel 30 may be provided with a storage section to prevent the string 42 and the connection portion 43 from moving loosely when the holding unit 40 is not in use, and the winding mechanism 50 may be omitted.

[0049] In the embodiment, the holding unit 40 is set in one of the multiple slits 312 on the inner periphery of the shaft 31. However, the holding unit 40 may be configured to be detachably set on the outer periphery 311 of the shaft 31, for example. Furthermore, the string 42 and the connection portion 43 may be configured so that the end of the string 42 is integrally fixed to a portion of the reel 30, and not constitute the holding unit 40 illustrated in the embodiment. Even with this configuration, similar to the embodiment, the load on the carrier tape 60 during the winding operation can be reduced to prevent deformation, and external force can be prevented from being applied to the housed components 69.

[0050] 10: Component mounting machine, 20: Feeder, 21: Feeder body, 211: Tape transport path, 22: Reel holding section, 23: Drive device, 231: Sprocket, 30: Tape reel, 30A: 15-inch reel, 30B: Spare reel, 30C: 13-inch reel, 31: Shaft section, 311: Outer circumferential surface, 312: Slit, 32: Flange section, 40: Holding unit, 41: Unit body, 42: String, 42A: Auxiliary tape, 43: Connection section, 43A: Chuck, 43B: Hook, 50: Winding mechanism, 51: Drum, 52: Power spring, 60: Carrier tape, 61: Base tape, 65: Cavity, 66: Feed hole (locking hole), 67: Perforation (locking hole), 62: Cover tape, 68: Trailer portion, 69: Part, 70: Extension tape, 71: Adhesive portion, 72: Non-adhesive portion, 73: Through hole (locking hole), 81: Locking hole

Claims

1. A tape reel comprising: a shaft portion having a cylindrical outer peripheral surface; a pair of flange portions provided on both ends of the shaft portion; a string that is unwound from the outer peripheral surface of the shaft portion; and a connecting portion that detachably connects the string and carrier tape.

2. The tape reel according to claim 1, wherein the string is a band-shaped auxiliary tape.

3. A tape reel according to claim 1 or 2, wherein the connecting portion has a chuck that clamps the carrier tape from both sides in the thickness direction.

4. A tape reel according to claim 1 or 2, wherein the connecting portion has a hook that engages with an engaging hole provided on the carrier tape.

5. A tape reel as described in claim 4, wherein the engagement hole is a feed hole that engages with a sprocket of the feeder when the carrier tape is fed by the feeder, a perforation formed in the carrier tape specifically for the hook, or a through hole formed in an extension tape attached to the carrier tape.

6. A tape reel according to claim 1 or 2, wherein the connection portion releases the carrier tape when a predetermined tension is applied to the carrier tape while the string and the carrier tape are connected.

7. A tape reel as described in claim 6, wherein the predetermined tension is set to be higher than the tension generated by the weight of the unwound carrier tape at the portion located between the connection portion and the tape transport path of the feeder, and lower than the maximum tension that can be applied to the carrier tape when the feeder feeds and moves the carrier tape.

8. A tape reel according to claim 1 or 2, wherein the string and the connecting portion are detachably attached to the shaft portion and form a holding unit that holds the end of the carrier tape.

9. A tape reel as described in claim 8, wherein the shaft portion has a slit that opens on the outer circumferential surface, and the holding unit is set on the inner circumferential side of the shaft portion and unwinds the string from the outer circumferential surface of the shaft portion through the slit.

10. The tape reel of claim 8, wherein the holding unit has a winding mechanism for winding the string.

11. The tape reel according to claim 10, wherein the winding mechanism causes at least a portion of the connection portion to protrude from the outer circumferential surface of the shaft portion when the string is wound.

12. A tape reel as described in claim 10, wherein the winding mechanism comprises a drum rotatably mounted on the shaft portion and around which the string is wound, and a power spring that applies a biasing force to rotate the drum in one direction.

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