JP2010013229A - Reinforcing structure of half-split body of reel for carrier tape of electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent bending and deformation of a side plate part and enhance the strength of a shaft hole part, in a half-split body of a reel for a carrier tape of an electronic component. <P>SOLUTION: In the half-split body constituted by projectingly installing a circumferential rib at an outer peripheral edge end part on an inside surface of a disc-shaped side plate, providing a rectangular rib on the inner peripheral side, providing a doughnut-shaped half winding core part by leaving a circular recessed surface at a center part of the side plate, penetrating a shaft hole radially having locking cut-outs on the circular recessed surface, and providing a standing part at a peripheral edge of the shaft hole, one or a plurality of thin ribs are formed by further projecting the thin ribs along a circumferential direction on a projecting surface of the circumferential rib. An arc-shaped rib having an endless shape by connecting two concentrically circular shaped circular-arcuate end parts to each other in the circumferential direction having the shaft hole of the circular recessed surface as a center is formed by projecting the thin ribs. Alternatively, an endless shaft peripheral rib with a fixed width from the standing part along the outside at an outer peripheral edge of the shaft hole on the circular recessed surface is formed by projecting the thin ribs. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a half of a reel for carrier tape of an electronic component obtained by sheet molding (vacuum molding, compressed air molding, etc.) of a thin synthetic resin sheet, and particularly relates to a structure for reinforcing this. is there.

  Conventionally, in order to store, transport, and supply minute electronic components, carrier tapes that are continuously provided with component recesses have been widely used, and accordingly, reels for carrier tape that wind and hold the tape are also used. Various forms have been proposed. For example, there are aluminum integrals and plastic injection molding. However, these materials have problems that the material itself is expensive, the manufacturing process is complicated, and the manufacturing cost is high. In order to reduce the cost, a reel made of cardboard or other thick paper has been proposed, but there is a concern that paper dust is generated and adversely affects electronic components. Moreover, since these conventional reels are transported and carried in as finished products, they are bulky in transportation and storage, which is inconvenient.

  Therefore, a reel described in Patent Document 1 has been proposed as an inexpensive and relatively simple configuration. This reel is made of a thin synthetic resin that has a half-shaped body of the same type including a side plate having a rib with a complicated shape, a projecting surface having a height of about 1/2 the width of the tape, and a shaft hole having a locking notch. The reel is completed by vacuum forming with a sheet, and joining a pair of halves with the projections and recesses that can be fitted to each other.

  This type of reel has a low product cost due to its configuration, and when carrying and storing, if the protruding surfaces are stacked in the same direction, the protruding surfaces fit together and the bulk can be suppressed. And when a reel is configured, a reel having a winding core (hub) commensurate with the tape width between the side plates can be simply obtained by simply joining the protruding surfaces of a pair of halves facing each other. It can be obtained.

  However, since the reel having the above configuration may cause deformation, warpage, or deflection in the side plate portion depending on the accuracy at the time of sheet molding, the rotation of the reel becomes irregular due to this deflection or the like, and the carrier tape is wound or sent out. Inconvenience may occur.

  In addition, this type of reel has a shaft hole having a radial locking notch in which a drive shaft having a locking piece projecting around the shaft can be engaged. Since the shaft hole, especially the locking notch in which the locking piece is engaged, is applied to the shaft hole, especially when the drive shaft is started or stopped, the shaft hole or the locking notch However, there was a disadvantage that it was deformed or damaged.

  In order to solve such a strength problem around the shaft hole, the present applicant has proposed a simple reel according to Patent Document 2. That is, a reinforcing plate having a shape that fits closely into the inner concave surface of the shaft hole boss portion other than the shaft hole including the engagement notch is separately prepared, and this is adhered to the portion by ultrasonic welding or the like. .

  According to the simple reel having such a configuration, the engagement notch reinforced by the reinforcing plate bonded to the inner concave surface of the winding core receives the rotational torque of the locking piece, and can prevent deformation and breakage of the portion.

Japanese Utility Model Publication No. 60-85557 Utility Model Registration No. 3038586

  However, the simple reel having the above-described configuration needs to separately prepare a reinforcing plate having a shape corresponding to the inner concave surface of the winding core, and needs to accurately position and bond the reinforcing plate to the inner concave surface. Therefore, a plurality of production lines such as a manufacturing process of the reinforcing plate and an adhesion process thereof are necessary, and the entire manufacturing process is complicated, and the manufacturing cost of the reel remains high.

  In the half of the reel for a carrier tape of an electronic component, the present invention prevents the side plate portion from being bent and deformed, and also increases the strength of the shaft hole portion. The purpose is to propose a reinforcing structure.

  In order to solve the above-mentioned problems, the present invention has an inner surface of a disk-shaped side plate that has an outer edge of a predetermined width at its outer peripheral edge, and has a circumferential rib protruding endlessly. In addition to providing ribs, a donut-shaped half-winding core is provided at a height approximately half the width of the tape, leaving a circular concave surface at the center of the side plate, and through the shaft hole having locking notches radially on the circular concave surface. A halved carrier tape reel provided with a standing portion toward the inner side of the side plate at the peripheral edge of the shaft hole, the protruding surface of the circumferential rib along the circumferential direction A means of forming a reinforcing structure of a half-divided body of a reel for carrier tape of an electronic component by forming one or more thin ribs so as to protrude further was adopted.

  Further, the carrier tape reel is halved and has an arcuate shape in which the ends of two concentric circular arcs are connected to each other in the circumferential direction around the axial hole of the circular concave surface. The ribs are formed by protruding the thin ribs, thereby adopting a means for constituting a reinforcing structure of the half of the reel for carrier tape of the electronic component.

  Alternatively, the carrier tape reel halves may be provided with endless axial circumferential ribs with a certain width from the standing portion along the outer periphery of the outer peripheral edge of the circular concave shaft hole. The means for forming the reinforcing structure of the half of the reel for the carrier tape of the electronic component was adopted by forming the thin ribs so as to protrude.

  And on a reel in which a thin rib is formed on the protruding surface of the circumferential rib, a means for forming an arc-shaped rib around the shaft hole with a thin rib, or a reel in which a thin rib is formed on the circumferential rib, Further, a means for forming the axial peripheral rib around the axial hole with a thin rib was adopted to constitute a reinforcing structure for the half of the reel.

  In the carrier tape reel having such a configuration, the circumferential rib and the plurality of thin ribs provided on the protruding surface thereof have an effect of maintaining the shape of the side plate constant. In addition, the arc-shaped ribs and the shaft circumferential ribs made of fine ribs around the shaft reinforce the shaft hole and have the effect of reliably receiving the rotational torque applied thereto.

  The half of the reel for carrier tape of the electronic component is formed by sheet-molding a thin synthetic resin sheet, and each of the thin ribs is formed by folding the synthetic resin sheet in two at the time of molding. Adopted means.

  Since the thin rib is formed by folding the sheet in half, the strength of the portion can be remarkably increased.

  Since the reel half structure having the above-described structure is provided with one or more thin ribs on the protruding surface of the circumferential rib, the circumferential rib itself prevents the side plate from being warped, bent or deformed. The thin ribs provided in double can be expected to have an excellent effect of maintaining the shape of the side plate more firmly and preventing deformation and the like. Therefore, since the assembled reel can obtain a stable rotation, it is possible to obtain a ripple effect that there is no inconvenience in winding and feeding out the tape.

  On the other hand, in the case where an arc-shaped rib or a shaft circumferential rib comprising a thin rib around the shaft is provided around the shaft hole, even if a large rotational torque is applied to the shaft hole, the shaft hole is received by receiving the force. It can be protected and the shaft hole can be reliably prevented from being deformed or damaged. Similarly, it can be expected that the carrier tape using the assembled reel can be wound and fed out more reliably.

  In addition, by forming the arc-shaped rib or the shaft circumferential rib around the shaft hole with the thin rib on the reel formed with the thin rib on the projecting surface of the circumferential rib, the effects of both structures are combined. Each part is reinforced, and can provide a reel that is morphologically stable and has high utility value.

  In addition, since the thin synthetic resin sheet is formed into a sheet and each of the thin ribs is formed by folding the synthetic resin sheet in a two-fold state at the time of molding, it is possible to manufacture the halved body relatively easily. At the same time, the thin rib formed by folding the sheet in half greatly increases the reinforcement strength. Therefore, even if the thickness of the synthetic resin sheet is thinner than before, sufficient strength can be obtained, so that material can be saved, manufacturing cost can be reduced, and economically advantageous. It is a novel invention.

  Hereinafter, several preferred embodiments of a reinforcing structure for a half of a reel for carrier tape of an electronic component according to the present invention will be described with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a perspective view of a first embodiment of a reel half according to the present invention, FIG. 2 is a front view of the same, FIG. 3A is a longitudinal sectional view thereof, and FIGS. These are partial enlarged sectional views of FIG.

  This halved body is formed into the shape described below by sheet molding (vacuum molding, pressure molding, etc.) of a thin synthetic resin (eg, polystyrene) sheet having a thickness of about 0.1 to 0.5 mm. It was obtained.

  The specific configuration will be described. In each figure, reference numeral 1 denotes a disk-shaped side plate, and the circumferential rib 2 is endless over the entire circumference of the inner side surface, leaving an outer edge portion 1a having a predetermined width from the end portion of the outer circumferential edge. It is something that has erupted. Here, the inner side surface means a surface on the side facing the inside when the halves are joined to form a carrier tape reel for an electronic component.

  The circumferential rib 2 will be described in more detail. As is apparent from the cross-sectional view shown in FIG. 3B, as a whole, the circumferential rib 2 protrudes from the side plate 1 with a predetermined width to form one rib. Two thin ribs 2a and 2a parallel to the circumferential direction are formed on the surface so as to protrude. The thin rib 2a is formed by folding a synthetic resin sheet in half by an operation during vacuum forming, and a specific method for forming the thin rib 2a will be described later. Since the concentric double thin ribs 2a and 2a are formed over the entire circumference of the side plate 1, the side plate 1 maintains its planar shape and is less likely to bend, warp or deform. However, the number of the thin ribs is not limited to two, but may be one or more.

  Reference numerals 3 and 3 are rectangular ribs of a predetermined shape protruding from the circumferential rib 2 on the inner side surface of the side plate 1 to the inner circumferential side, and are provided symmetrically. This rectangular rib 3 also reinforces the side plate and maintains its flat surface. However, the specific shape of the rectangular rib is not particularly limited in the present invention. For example, it is possible to form thin ribs radially in the portion. In addition, 1b and 1b are fan-shaped through-holes provided by punching symmetrically in the same manner, and through this through-hole 1b, the starting end of the tape is easily engaged with the radial recess 4a described below, and This makes it possible to visually recognize the winding amount of the tape. In addition, an upright portion having a predetermined height may be provided at the peripheral edge of the through hole 1b for reinforcement.

  4 is a half-winding core portion protruding in a donut shape leaving a circular concave surface 5 of a predetermined diameter at the center of the side plate 1, and the protruding height is higher than that of the circumferential rib 2 and the rectangular rib 3. And at least a height of at least half the width of the carrier tape to be wound. Further, the half-winding core portion 4 is not formed in a continuous donut shape, but is divided into four by four radial concave portions 4a continuous with the circular concave surface 5, and is formed as a set of arcuate protruding portions 4b, 4b. ing. The reason why such a divided structure is adopted is that each recess 4a functions as a reinforcing rib, and it is possible to form a core having a higher strength in the axial direction than a continuous perfect circle, and the recess 4a. This is because the starting end of the tape is engaged with the tape to facilitate winding. The number of divisions is not limited to four, and is appropriately selected according to the size of the reel.

  Next, 6 is a shaft hole penetrating through the center of the side plate 1, and a plurality of (see FIG. 6) so that a drive shaft and a locking piece projecting around the shaft can be engaged in the winding device. In this case, three locking notches 6a are provided in the peripheral radial direction. Further, as shown in the cross-sectional view of FIG. 3, a standing portion 6b having a predetermined height is raised on the inner surface side at the peripheral edge of the shaft hole 6 including the locking notch 6a. The upright portion 6 b functions as a rib and contributes to reinforcement of the shaft hole 6.

  Subsequently, reference numeral 7 denotes arc-shaped ribs provided at three locations in the circumferential direction around the shaft hole 6 in the circular concave surface 5 of the central portion. This arc-shaped rib 7 has a shape in which the ends of two concentric circular arcs are connected to each other, and is formed by protruding a thin rib 7a as shown in FIG. The thin rib 7a is formed by folding the synthetic resin sheet in two at the time of molding. The arc-shaped rib 7 strongly reinforces the flat surface portion of the circular concave surface 5 formed between the shaft hole 6 and the semi-winding core portion 4 composed of the arc-shaped projecting portions 4b, 4b,. It is intended to prevent deformation and breakage due to rotational torque applied to the.

  The halved body having such a structure is a carrier tape reel completed by joining the respective half-winding core portions 4 of the pair of halves in the same manner as this conventional half-divided body. Yes, the double-circumferential circumferential rib 2 provided on the outer peripheral edge of the side plate 1 prevents the deflection and warpage, and the upright portion 6a provided around the shaft hole 6 and the plurality of arc-shaped ribs 7 Can provide a strongly reinforced reel.

(Second Embodiment)
Next, FIG. 4 is a perspective view of a second embodiment of a reel half according to the present invention, FIG. 5 is a front view of the same, FIG. 6A is a longitudinal sectional view thereof, and FIG. It is a partial expanded sectional view of (A).

  The second embodiment has basically the same configuration as that of the first embodiment, but the configuration around the shaft hole is different. Therefore, the same components will be described with the same numbers as in FIGS.

  In each figure, reference numeral 1 denotes a disk-shaped side plate, which has a circumferential rib 2 projecting endlessly over the entire circumference of its inner side surface, leaving an outer edge portion 1a having a predetermined width from the end portion of its outer peripheral edge.

  The circumferential rib 2 will be described in more detail. As is clear from the cross-sectional view shown in FIG. 6B, as a whole, the circumferential rib 2 protrudes from the side plate 1 with a predetermined width to form one rib. Two thin ribs 2a and 2a parallel to the circumferential direction are formed on the surface so as to protrude. The thin rib 2a is formed by folding the synthetic resin sheet in half by an operation during vacuum molding.

  Reference numerals 3 and 3 are rectangular ribs of a predetermined shape protruding from the circumferential rib 2 on the inner side surface of the side plate 1 to the inner circumferential side, and are provided symmetrically. The shape of the rectangular rib is not particularly limited in the present invention. In addition, 1b and 1b are fan-shaped through-holes provided by punching symmetrically in the same manner. In addition, an upright portion having a predetermined height may be provided at the peripheral edge of the through hole 1b for reinforcement.

  4 is a half-winding core portion protruding in a donut shape leaving a circular concave surface 5 of a predetermined diameter at the center portion of the side plate 1, and the protruding height is higher than that of each of the ribs 2 and 3 and is at least wound. It has a height that is about 1/2 of the width of the carrier tape to be taken. Further, the half-winding core portion 4 is not formed in a continuous donut shape, but is divided into four by four radial concave portions 4a continuous with the circular concave surface 5, and is formed as a set of arcuate protruding portions 4b, 4b. ing.

  Next, 6 is a shaft hole penetrating through the center of the side plate 1, and a plurality of (three in the figure) are provided so that the drive shaft in the winding device and the locking pieces protruding therefrom can be engaged. ) Is provided in the radial direction of the peripheral edge. Further, as shown in the cross-sectional view of FIG. 6, an upright portion 6b having a predetermined height is erected on the inner surface side at the peripheral edge of the shaft hole 6 including the locking notch 6a.

  The configuration so far is the same configuration as the halved body of the first embodiment. Subsequently, 8 is an axial rib provided along the outside of the outer peripheral edge of the shaft hole 6 in the circular concave surface 5 of the central portion. The axial rib 8 is formed by projecting the thin rib 8a around the shaft hole 6 from the upright portion 6a with a constant width and endlessly. The thin rib 8a is formed by folding a synthetic resin sheet in two at the time of molding. The shaft circumferential rib 8 strongly reinforces the flat surface portion of the circular concave surface 5 formed between the shaft hole 6 and the semi-winding core portion 4 composed of the arcuate protruding portions 4b, 4b,. It is intended to prevent deformation and breakage due to rotational torque applied to the periphery.

  Similarly to the above, the halves with such a configuration also complete the reel for the carrier tape by joining the respective half-winding core portions 4 of the pair of halves to each other. The double-structured circumferential rib 2 provided at the periphery prevents the deflection and warpage, and the reel is firmly reinforced around the shaft by the upright portion 6a provided on the periphery of the shaft hole 6 and the shaft peripheral rib 8. Can be provided.

  Next, a specific forming means of the half halves of the reel having the above configuration will be described. As described above, this halved body is obtained by vacuum molding or the like of a synthetic resin sheet. In other words, basically, a mold with desired irregularities (ribs, etc.) is covered with a synthetic resin sheet that has been softened by heating, and the sheet is sucked from the inside to adhere to the mold and molded. It is cooled and taken out, and excess burrs are removed.

  However, in each of the above configurations, the double thin rib 2a in the circumferential rib 2, the thin rib 7a in the arc-shaped rib 7, and the thin rib 8a in the axial circumferential rib 8 are all formed by folding the resin sheet in half. It is preferable that the conventional vacuum molding method is difficult to mold. For this reason, in this invention, as shown in FIG. 7, it has implement | achieved forming each thin rib with the shaping | molding method which combined the fixed type | mold and the movement type | mold.

  That is, in FIG. 7A, reference numeral 11 denotes a fixed mold, which is basically the same as a general mold. The fixed mold 11 has a first bottom surface 11a and a second bottom surface 11b that is one step lower on the inner side, and the first bottom surface 11a and the second bottom surface 11b are connected by a vertical surface 11c. For example, the circumferential rib 2 is formed so that the circumferential rib 2 protrudes due to the step between the first bottom surface 11a and the second bottom surface 11b. A through hole 11d is provided at an inner position at a distance of at least twice the thickness of the synthetic resin sheet from the outer periphery of the second bottom surface 11b of the fixed mold 11, and the movable mold 12 can enter and leave the through hole 11d closely. (Refer to FIG. 5B).

  At the time of molding, the movable mold 12 is initially on the same plane as the second bottom surface 11b. When the synthetic resin sheet S heated in this state is covered and sucked, the sheet S protrudes along the vertical surface 11c and the second bottom surface 11b. It becomes a shape. When the movable mold 12 is pushed up from this state, the resin sheet S is formed in a state along the inner shape of the mold. That is, since the vertical surface 11c of the fixed mold and the side surface of the movable mold 12 are separated by at least a distance of twice the thickness of the synthetic resin sheet, the resin sheet S is folded in half between them, A thin rib having a height half that of the pushed-up height is formed.

  The thin rib formed in this way has a thickness of at least twice the thickness of the synthetic resin sheet and rises close to the half-fold, so that it becomes a high-strength rib.

  3 and 6, the folded sheets are shown in close contact with each other. However, depending on the distance between the fixed mold and the movable mold, they are not in close contact as shown in FIG. Sometimes formed as a rise. Even in this case, the ribs are extremely strong because they are close to each other.

  Next, the handling of the half halves of the reel having the above-described configuration will be described basically in the same manner as this conventional half halves. That is, at the time of transportation and storage, the semi-winding core portions 4 are stacked in the same direction, so that the bulk can be kept low even when many are stacked, and space saving can be realized. Further, since the thin synthetic resin sheet is formed by sheet molding, it can be easily and inexpensively manufactured.

  In addition, in order to complete the reel for carrier tape, the same half-split body is made into a pair, and the half-winding core portions 4 (arc-shaped protruding portions 4b) are joined face to face to each other between the left and right side plates. A reel having a winding core with a width corresponding to the tape width can be completed. In this case, the bonding between the two is performed by an appropriate publicly known means such as adhesion by an adhesive, welding by ultrasonic waves or heat. Moreover, you may make it form the well-known fitting structure which consists of the unevenness | corrugation which can mutually be fitted in the said arc-shaped protruding part 4b, and may make it fit.

  Since the reel completed by such means is provided with the circumferential rib 2 and the rectangular rib 3 having the thin ribs 2a on the entire circumference of the edge of the inner facing surface, the side plate 1 may be bent, warped or deformed. In addition, stable rotation can be obtained even during rotation driving, and there is no inconvenience in winding and feeding out the tape. Further, since the outer edge portion 1a remains at the outer peripheral edge portion, there is an advantage that the tape is guided inward by a step with the circumferential rib 2 and the tape can be easily wound.

  Further, since the upright portion 6a is provided in the shaft hole 6 or the arc-shaped rib 7 or the shaft peripheral rib 8 is provided in the periphery thereof, the peripheral portion of the shaft hole 6 is reinforced, and at the time of rotational driving, the drive shaft It is possible to reliably suppress deformation and breakage of the shaft hole due to rotational torque.

  Moreover, since the thin rib 2a in the circumferential rib 2, the thin rib 7a in the arc-shaped rib 7, and the thin rib 8a in the axial circumferential rib 8 are all formed by folding the synthetic resin sheet in half, The strength is high, and sufficient strength can be obtained even if the thickness of the synthetic resin sheet is made thinner than before. Therefore, it is possible to save the material, and there is an advantage that the manufacturing cost can be suppressed low.

1 is a perspective view of a first embodiment of a reel half according to the present invention. It is a front view of the half of the reel. (A) is a longitudinal sectional view of the half of the reel, and (B) and (C) are partially enlarged sectional views thereof. 1 is a perspective view of a first embodiment of a reel half according to the present invention. It is a front view of the half of the reel. (A) is a longitudinal sectional view of the half of the reel, and (B) is a partially enlarged sectional view thereof. It is explanatory drawing which shows an example of the metal mold | die of sheet molding.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side plate 2 Circumferential rib 2a Thin rib 3 Rectangular rib 4 Semi-winding core part 4a Radial recessed part 4b Arc-shaped protruding part 5 Circular concave surface 6 Shaft hole 6a Locking notch 7 Arc-shaped rib 7a Thin rib 8 Shaft circumferential rib 8a Thin rib

Claims (6)

  On the inner side surface of the disk-shaped side plate, a circumferential rib is projected endlessly leaving an outer edge of a predetermined width at the outer peripheral edge, and a rectangular rib is provided on the inner peripheral side, and at the center of the side plate A donut-shaped half-winding core portion is provided at a height approximately half the width of the tape leaving a circular concave surface, and a shaft hole having locking notches radially formed in the circular concave surface, and at the peripheral edge of the shaft hole, A halved carrier tape reel provided with an upright portion directed toward the inside of the side plate, wherein one or more fine ribs are further projected along the circumferential direction on the projecting surface of the circumferential rib. A reinforcing structure for a half of a reel for a carrier tape of an electronic component.   On the inner side surface of the disk-shaped side plate, a circumferential rib is projected endlessly leaving an outer edge of a predetermined width at the outer peripheral edge, and a rectangular rib is provided on the inner peripheral side, and at the center of the side plate A donut-shaped half-winding core portion is provided at a height approximately half the width of the tape leaving a circular concave surface, and a shaft hole having locking notches radially formed in the circular concave surface, and at the peripheral edge of the shaft hole, A carrier tape reel halved with an upstanding portion directed toward the inside of the side plate, the ends of two concentric arcs in the circumferential direction centering on the shaft hole of the circular concave surface A reinforcing structure for a half of a reel for a carrier tape of an electronic component, wherein arc-shaped ribs that are connected and endless are formed by protruding thin ribs.   On the inner side surface of the disk-shaped side plate, a circumferential rib is projected endlessly leaving an outer edge of a predetermined width at the outer peripheral edge, and a rectangular rib is provided on the inner peripheral side, and at the center of the side plate A donut-shaped half-winding core portion is provided at a height approximately half the width of the tape leaving a circular concave surface, and a shaft hole having locking notches radially formed in the circular concave surface, and at the peripheral edge of the shaft hole, A halved carrier tape reel provided with an upright portion directed toward the inside of the side plate, which is endless with a certain width from the upright portion along the outer periphery of the outer peripheral edge of the shaft hole of the circular concave surface. A reinforcing structure for a half of a reel for a carrier tape of an electronic component, characterized in that an axial rib is formed by protruding a thin rib.   A reinforcing structure for a half of a reel for a carrier tape of an electronic component, wherein the reel having the thin rib formed on the circumferential rib according to claim 1 and the arc-shaped rib around the shaft hole according to claim 2 is formed by the thin rib.   A reinforcing structure for a half of a reel for carrier tape of an electronic component, wherein the reel having the thin rib formed on the circumferential rib according to claim 1 and the thin rib around the shaft hole according to claim 3 are formed. .   The half of the reel for carrier tape of the electronic component is formed by sheet-molding a thin synthetic resin sheet, and each of the thin ribs is formed by folding the synthetic resin sheet into two at the time of molding. 6. A reinforcing structure for a half-divided body of a reel for carrier tape of an electronic component according to any one of claims 1 to 5.

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