JP2016182062A - Production method of fishing rod blank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved and inexpensive production method of a fishing rod blank, in which an inner wall face can exhibit water repellency and low friction with respect to a fishing line.SOLUTION: A blank is produced by: a cutting step; a thermal transfer material arranging step; a sticking step; a rolling step; a taping step; a calcination step; a core removing step; a tape removing step; and a finishing and cutting step. Before a prepreg is wound to a mandrel, a thermal transfer tape is wound to the mandrel in the thermal transfer material arranging step. The thermal transfer tape comprises a substrate and a water repellent coating 25 carried on the substrate. Because the substrate is removed after calcination, the water repellent coating 25 is coated in a uniform state to an inner wall face 24 of a blank 47.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for manufacturing a blank constituting an inner guide type fishing rod (so-called through rod).

  Since the inner guide type fishing rod supports the fishing line on the inner surface of the blank, there is no trouble of entanglement of the fishing line with the fishing rod. On the other hand, this type of fishing rod has a large resistance due to contact between the fishing line and the blank, and therefore it is not easy for the angler to handle the fishing line. Various improvements have been made to conventional through rods in order to reduce the contact resistance between the fishing line and the blank (for example, see Patent Documents 1 to 4).

JP-A-5-268858 JP 2005-160483 A JP 2004-283179 A JP 2004-248682 A JP-A-8-107737

  Patent Document 5 discloses a technique in which an uneven surface is formed in a spiral shape on the inner wall surface of a blank constituting a fishing rod, and Patent Documents 1 to 4 describe that a resin having water repellency is coated on the inner surface of the blank. Disclosed techniques are disclosed. These techniques reduce the contact resistance by reducing the contact area between the fishing line and the blank, and the two techniques are combined. In particular, the fluororesin particles are used as the water-repellent resin for the polyurethane resin coating material. By adopting a kneaded material, excellent water repellency and low friction are maintained on the inner surface of the blank.

  However, the conventional water-repellent resin cannot reduce the coating thickness on the inner wall surface of the blank (about 0.1 mm), and the coating thickness is difficult to be uniform. Therefore, the uneven surface approaches a smooth surface by the water-repellent resin, and the contact area between the fishing line and the inner wall surface of the blank tends to increase and the contact resistance tends to increase. In addition, the operation of applying the paint in which the fluorine resin particles are kneaded to the polyurethane resin coating material is not easy, and the coating cost has increased.

  The present invention has been made based on such a background, and an object thereof is to provide an inexpensive method for manufacturing a fishing rod blank that exhibits necessary and sufficient water repellency and low friction on the inner wall surface. .

  (1) The method for manufacturing a fishing rod blank according to the present invention includes a first step in which a sheet-like or tape-like prepreg reinforced with fibers is wound around a core metal, and a heating step is performed after the first step. This includes a second step in which the fishing rod blank is fired. In particular, this manufacturing method has a water-repellent paint, and a thermal transfer member that transfers the water-repellent paint to the prepreg during the firing is wound around the core before the prepreg is wound around the core. Including a third step.

  According to this invention, since the thermal transfer member is disposed inside the prepreg that forms the blank with the cored bar as the center, the water-repellent paint is transferred to the inner wall surface of the blank after the blank is fired. Thereby, the inner wall surface of the blank has sufficient water repellency. In addition, since the water-repellent coating is thermally transferred, the thickness of the water-repellent coating is thin and extremely uniform. Moreover, since this water-repellent paint is transferred by the heat at the time of baking of a blank, it is not necessary to provide the heating process for transferring separately. That is, the transfer of the water-repellent paint is simultaneously performed in the conventional blank baking step.

  (2) The thermal transfer member includes a sheet-like or tape-like base material having a front surface and a back surface, and the water-repellent paint carried on the surface of the base material. In the third step, the thermal transfer member is wound around the metal core so that the back surface of the thermal transfer member faces the metal core.

  In this configuration, since the thermal transfer member is formed in a tape shape, the winding work around the core is simplified.

  (3) The thermal transfer member may be spirally wound around the core metal so that no gap is generated in the longitudinal direction of the core metal.

  In this configuration, the entire inner wall surface of the blank is uniformly covered with the water repellent paint. For example, when no ridge is formed on the inner wall surface of the blank, the water repellent finish of the inner wall surface of the blank is facilitated.

  (4) The thermal transfer member may be spirally wound around the core metal so that a predetermined gap is formed in the longitudinal direction of the core metal.

  In this structure, the part to which the water-repellent paint is applied and the part to which the water-repellent paint is not applied appear alternately along the longitudinal direction on the inner wall surface of the blank. In addition, by winding the thermal transfer member in this way, a concave line corresponding to the thickness of the thermal transfer member is formed on the inner wall surface of the blank. The concave stripe has a spiral shape, and a water repellent paint is applied to the bottom of the concave stripe. That is, high water repellency and reduction in contact resistance when the fishing line contacts the inner wall surface of the blank are realized.

  (5) The first step may include a step in which a tape-shaped prepreg is spirally wound around the core metal at a predetermined pitch in order to form protrusions on the inner wall surface of the blank after firing. Good. In that case, the thermal transfer member is spirally wound around the core at the predetermined pitch before the step.

  According to this configuration, a sufficiently high ridge is formed on the inner wall surface of the blank, and the water-repellent paint is applied to the top of the ridge or the bottom of the groove formed by the ridge. Therefore, higher water repellency and reduction in contact resistance when the fishing line contacts the inner wall surface of the blank are realized.

  (6) In the fishing rod blank according to the present invention, a sheet-like or tape-like prepreg reinforced with fibers is wound around a cored bar and fired by a heating process. A water-repellent paint is transferred to the inner wall surface of the blank by heat during firing.

  In this invention, since the water-repellent paint is transferred to the inner wall surface of the blank, the water-repellent paint is simply and uniformly applied to the inner wall surface of the blank. In addition, since the water-repellent paint is thermally transferred by using heat at the time of baking, it is not necessary to separately provide a heating process for transferring. Therefore, the transfer of the water-repellent paint is simultaneously performed in the conventional blank baking step, and the blank is configured at low cost.

  According to the present invention, simply by adding a step of winding the thermal transfer member around the metal core in the blank manufacturing process, the water repellency and low friction can be exhibited on the inner wall surface of the blank easily and inexpensively. In particular, since the water-repellent paint is transferred to the blank by heat during firing, the thickness of the water-repellent paint becomes thin and uniform, and the weight of the blank can be reduced as compared with the conventional case.

FIG. 1 is an external perspective view of a fishing rod according to the first embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the second node according to the first embodiment of the present invention. FIG. 3 is a diagram schematically showing a manufacturing process of the second node according to the first embodiment of the present invention. FIG. 4 is a diagram schematically showing the manufacturing process of the second node according to the first embodiment of the present invention. FIG. 5 is a diagram schematically showing a manufacturing process of the second node according to the first embodiment of the present invention. FIG. 6 is a diagram schematically showing a manufacturing process of the second node according to the first embodiment of the present invention. FIG. 7 is a diagram schematically showing the manufacturing process of the second node according to the first embodiment of the present invention. FIG. 8 is a diagram schematically showing the manufacturing process of the second node according to the first embodiment of the present invention. FIG. 9 is a diagram schematically showing a blank manufacturing process according to a modification of the first embodiment of the present invention. FIG. 10 is a diagram schematically showing an inner wall surface structure of a blank according to a modified example of the first embodiment of the present invention. FIG. 11 is a diagram schematically showing a part of a blank manufacturing process according to the second embodiment of the present invention. FIG. 12 is a diagram schematically showing an inner wall surface structure of a blank according to the second embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings as appropriate. In addition, this Embodiment is only one aspect | mode of the manufacturing method of the blank which concerns on this invention, and it cannot be overemphasized that an embodiment may be changed in the range which does not change the summary of this invention.

<First Embodiment>

  FIG. 1 is an external perspective view of a fishing rod 10 according to the first embodiment of the present invention.

  This fishing rod 10 is a so-called inner guide type swing-out fishing rod. The fishing rod 10 includes a fishing rod main body 11 and a grip 12. The grip 12 is a portion where the angler grips the fishing rod 10.

  The fishing rod main body 11 is composed of five tubular members 13 to 17 (corresponding to “a fishing rod blank” recited in the claims). The cylindrical members 13 to 17 as components of the fishing rod main body 11 are respectively referred to as “nodes” and are referred to as a first node 13 and a second node 14 in order from the tip side of the fishing rod main body 11. The fourth clause 16 is particularly referred to as “original upper clause”, and the fifth clause 17 is particularly referred to as “original clause”. The manufacturing method of each section 13 to 17 will be described in detail later. The fishing rod 10 is equipped with a mechanism (so-called zoom mechanism) in which the fourth node 16 (that is, the original upper node 16) extends and contracts with respect to the fifth node 17 (that is, the original node 17). However, this mechanism is optional, and the mechanism may be omitted.

  The first node 13 is housed in the second node 14 so as to be freely drawn out. A top guide 18 from which the fishing line is led is provided at the tip of the first joint 13. The first node 13 is formed in a tapered shape, and is formed such that the outer diameter of the rear end portion is larger than the outer diameter of the front end portion. The rear end diameter of the first joint 13 is larger than the tip diameter of the second joint 14, and when the first joint 13 is pulled out from the second joint 14, The end portion is fitted to the tip portion of the second joint 14 so that both are fixed. The relationship between the second clause 14 and the third clause 15 and the relationship between the third clause 15 and the original upper clause 16 are the same. The fishing rod body 11 is in an extended state by pulling out the first node 13 to the former upper node 16 from the adjacent second node 14 to the original node 17, respectively.

  Rings R <b> 1 to R <b> 4 are attached to the tip ends of the second joint 14 to the original joint 17. The rings R1 to R4 improve the rigidity of the tip portions of the second joint 14 to the original joint 17 and ensure the fitting of adjacent nodes. Further, a fishing line introduction hole (not shown) is provided at the tip portion of the fourth joint 16, and an introduction guide 19 for guiding the fishing line is attached to the fishing line introduction hole. Further, a tail plug 39 is attached to the rear end of the original clause 17. Since the top guide 18, the introduction guide 19 and the bottom plug 39 have a known configuration, detailed description thereof is omitted.

  The original clause 17 includes a reel sheet 20. The reel seat 20 is used to detachably hold a fishing reel (not shown), and is formed integrally with the base clause 17 in this embodiment. The reel sheet 20 includes a placement surface 23 on which a reel is placed, a fixed hood 21 and a movable hood 22. The leg of the reel is placed on the placement surface 23, and one side of this leg is inserted into the fixed hood 21. When the movable hood 22 is moved to the fixed sheet 21 side in the direction of the arrow 30, the other side of the reel legs is inserted into the movable hood 22. Thereby, the leg of the reel is sandwiched between the fixed hood 21 and the movable hood 22, and the reel is fixed to the reel sheet 20. As shown in the figure, in the present embodiment, the reel seat 20 also serves as the grip 12, and the fisherman grips the reel seat 20 and operates the fishing rod 10 and the reel in actual fishing.

  FIG. 2 is an enlarged cross-sectional view of the second joint 14.

  The feature of this embodiment is that the structure of the inner wall surface 24 of each of the nodes 13 to 17 (particularly the first node 13 to the third node 15) and each of the nodes 13 to 17 (particularly the first node 13 to the first node). This is the manufacturing method of No. 3 Section 15). That is, as shown in the figure, the water repellent paint 25 is attached to the inner wall surface 24 of the second node 14, and the water repellent paint 25 has a small thickness t (in this embodiment, 1 μm). ˜12 μm) and uniformly applied. Thereby, the low friction property with respect to the fishing line of the said inner wall surface 24 and sufficient water repellency are ensured, and also the weight reduction of the 2nd node 14 is achieved. The first node 13 and the third node 15 have the same structure. In the present embodiment, the original upper joint 16 and the original joint 17 are not coated with the water repellent paint 25, but the water repellent paint 25 may also be applied thereto.

  Each section 13-17 is manufactured in the following manner. For simplification of description, the manufacturing process of the second clause 14 will be described.

  3 to 8 are diagrams schematically showing the manufacturing process of the second joint 14.

  First, a blank 47 (see FIG. 7) described later is formed. The blank 47 is manufactured by winding the mandrel 34 after the prepreg 41 is wound around the mandrel 43 (corresponding to the “core metal” described in the claims) and fired (cured). The second clause 14 is completed when the blank 47 is cut and finished.

  The manufacturing method of No. 2 clause 14 includes the following steps. (1) Cutting step, (2) Thermal transfer material placement step, (3) Bonding step, (4) Rolling step, (5) Taping step, (6) Firing step (heating step), (7) Decentering Through the process, (8) tape removing process and (9) finishing / cutting process, the second joint 14 is manufactured. The same applies to the first clause 13 and the other clauses 15-17.

  (1) Cutting process

  The prepreg 41 is a sheet in which a carbon fiber is impregnated with a resin. Examples of the resin include an epoxy resin (thermosetting resin). The mechanical strength of the second joint 14 which is a molded product is determined by the tensile elastic modulus of the carbon fiber. As shown in FIG. 3A, using the original fabric of the prepreg 41 as a raw material, as shown in FIG. 3B, the original fabric 41 is cut into a predetermined dimension to form a cross pattern 42. The dimension and shape of the cross pattern 42 are determined according to the length, thickness, action, and the like of the second joint 14 as a molded product.

  (2) Thermal transfer material placement process (corresponding to “third process” described in claims)

  As shown in FIG. 4A, the release agent 26 is applied to the outer peripheral surface of the mandrel 43. This mold release agent 26 may be omitted. Further, the thermal transfer tape 31 (corresponding to “thermal transfer member” described in claims) is wound around the mandrel 43.

  FIG. 5 is a perspective view of the thermal transfer tape 31 and shows the structure of the thermal transfer tape 31 in detail.

  The thermal transfer tape 31 includes a base material 32 and a water repellent paint 25. The base material 32 consists of elongate elongate polypropylene (PP). The thickness b of the base material 32 is about 22 μm, and the width dimension D is about 6 mm. In this embodiment, the water-repellent paint 25 is a urethane-modified acrylic silicone paint mixed with water-repellent silica. The thickness t of the water repellent paint 25 is set to 1 μm to 12 μm as described above. The water repellent paint 25 is carried on the surface 27 of the substrate 32. Since the main component of the water-repellent paint 25 is urethane-modified acrylic silicone, the water-repellent paint is easily separated from the substrate 32 by heating and transferred to the object.

  As shown in FIG. 4B, the thermal transfer tape 31 is wound around the mandrel 43 so that the water-repellent paint 25 is exposed. That is, the thermal transfer tape 31 is wound spirally so that the back surface 28 of the base material 32 faces the mandrel 43. At this time, in this embodiment, the thermal transfer tape 31 is tightly wound without forming a gap in the longitudinal direction of the mandrel 43.

  (3) Bonding process (4) Rolling process (5) Taping process

  As shown in FIG. 6A, the cross pattern 42 is positioned with respect to the mandrel 43. At this time, for example, an iron is used, and the edge 44 of the cross pattern 42 is attached to the mandrel 43 by the heat. Then, the cross pattern 42 is completely wound around the mandrel 43 (corresponding to the “first step” described in the claims). At this time, the mandrel 43 is rotated and the cross pattern 42 is wound up. When the cross pattern 42 is wound around the mandrel 43, the cross pattern 42 faces the water repellent paint 25 of the thermal transfer tape 31.

  As shown in FIG. 5B, the forming tape 45 is wound so that the cross pattern 42 is not peeled off from the mandrel 43. The molding tape 45 is made of polypropylene (PP), for example, and is wound so as to tighten the cross pattern 42 and the mandrel 43.

  (6) Firing process (heating process) (7) Decentering process

  As shown in FIG. 7A, the cross pattern 42 formed into a tubular shape and taped is put into a furnace 46 together with a mandrel 43. The furnace 46 is typically an electric oven, and the cross pattern 42 is heated for 120 minutes in an atmosphere of 140 ° C., for example. As a result, the resin contained in the cross pattern 42 is cured, and a lightweight blank 47 having excellent tensile strength and bending strength is formed (corresponding to the “second step” described in the claims).

  When the firing step is completed, the mandrel 43 is pulled out from the blank 47 as shown in FIG. At this time, the thermal transfer tape 31 remains inside the molded blank 47. The heat applied to the cross pattern 42 in this baking process also heats the thermal transfer tape 31. Thereby, the water-repellent paint 25 carried on the base material 32 is transferred to the cross pattern 42 side, that is, to the inner wall surface 24 of the blank 47 (see FIG. 2).

  (8) Tape removal process (9) Finishing and cutting process

  As shown in FIG. 8A, the molding tape 45 is removed from the outer peripheral surface of the baked blank 47. Reference numeral 48 is a line indicating a so-called spine, and constitutes the spine of the blank 47. Further, as shown in FIG. 5B, the base material 32 of the thermal transfer tape 31 is pulled out from the inside of the blank 47. As described above, since the water repellent paint 25 is transferred to the inner wall surface 24 (see FIG. 2) of the blank 47, the base material 32 is easily peeled off. Thereafter, the surface of the blank 47 is polished, cut into a predetermined size, and required coating is applied, whereby the second joint 14 is completed. The other sections are manufactured in the same manner.

  In the manufacturing method of the blank 47 according to the present embodiment, as shown in FIG. 2, the thermal transfer tape 31 is disposed inside the blank 47, and the water repellent paint 25 is easily applied to the inner wall surface 24 due to the influence of heat during firing. It is thermally transferred to. That is, since the inner wall surface 24 of the blank 47 is covered with the water repellent paint 25, the inner surface of the blank 47 exhibits high water repellency. Further, the fishing rod 10 shown in FIG. 1 is configured by combining the blanks 47. In that case, since the water-repellent paint 25 and the fishing line come into contact with each other, the frictional resistance between the fishing line and each of the nodes 13 to 17 can be kept low.

  As described above, in the manufacturing process of the blank 47, only the process of winding the thermal transfer tape 31 around the mandrel 43 is added, and the water repellency and low friction are formed on the inner surfaces of the nodes 13 to 17 constituting the fishing rod 10 easily and inexpensively. The ability to show off. In particular, since the water repellent paint 25 is thermally transferred, the thickness of the water repellent paint 25 is thin and uniform. As a result, the weight of the blank 47 can be reduced as compared with the conventional case, and the weight of the fishing rod 10 and the cost can be reduced.

  In this embodiment, since the water-repellent paint 25 is carried on the tape-like base material 32, the winding work around the mandrel 43 is easy. In the present embodiment, the base material 32 is formed in a tape shape, but it may of course be formed in a sheet shape by changing the width dimension D (see FIG. 5) of the base material 32. It is.

  As shown in FIG. 4B, in this embodiment, the thermal transfer tape 31 is wound so that no gap is generated in the longitudinal direction of the mandrel 43, and as described above, the entire inner wall surface 24 of the blank 47 is wound. Is uniformly covered with the water-repellent paint 25. Thereby, the desired water-repellent performance of the blank 47 is achieved easily and inexpensively.

<Modification of First Embodiment>

  FIG. 9 is a diagram schematically showing a manufacturing process of the blank 50 (typically the second joint 14) according to the modification of the present embodiment.

  In the above embodiment, the thermal transfer tape 31 is tightly wound without causing a gap in the longitudinal direction of the mandrel 43 (see FIG. 4), whereas in this modification, the thermal transfer tape 31 has a width dimension. It is wound around the mandrel 43 at a pitch exceeding D. That is, the thermal transfer tape 31 is wound spirally with a predetermined gap S formed in the longitudinal direction of the mandrel 43. By forming the gap S in this way, portions where the water repellent paint 25 is applied to the inner wall surface 24 of the blank 47 and portions where the water repellent paint 25 is not applied appear alternately.

  10A and 10B are diagrams schematically showing the inner wall surface structure of the blank 50, where FIG. 10A shows a state in which a cross pattern 42 is superimposed on the thermal transfer tape 31, and FIG. 10B shows a state after firing.

  As shown in FIG. 6A, when the thermal transfer tape 31 is wound around the mandrel 43 and the firing process proceeds thereafter, the cross pattern 42 is fastened by a forming tape 45 (not shown). The contained resin enters the gap S and hardens. Further, when the base material 32 is removed by the tape removing step, as shown in FIG. 5B, spiral concave portions 52 and convex portions 53 are formed on the inner wall surface 51 of the blank 50, and the concave portions 52 are repelled. The aqueous paint 25 is transferred.

  In this modification, the fishing line is supported by a convex portion 53 formed in a spiral shape inside the blank 50 and the inner wall surface 51 of the blank 50 is sufficiently water-repellent by the water-repellent paint 25 disposed in the concave portion 52. To demonstrate. By supporting the fishing line on the convex portion 53, the frictional resistance between the fishing line and the blank 50 is further reduced. Moreover, the water repellency of the blank 50 is also maintained as in the above embodiment.

<Second Embodiment>

  FIG. 11 is a diagram schematically showing a part of the manufacturing process of the blank 60 (typically the second node 14) according to the second embodiment of the present invention. FIG. 12 is a cross-sectional view showing the structure of the blank 60 after firing.

  The manufacturing method of the blank 60 according to the present embodiment differs from the manufacturing method of the blank 47 according to the first embodiment in that the thermal transfer tape 31 is spirally wound at a predetermined pitch P in the third step. The point and the first step include a step in which a prepreg tape 61 (corresponding to “tape-shaped prepreg” described in the claims) is spirally wound around the mandrel 43. In this case, the thermal transfer tape 31 is spirally wound with a predetermined gap S formed as in the modification of the first embodiment. The prepreg tape 61 is wound around the outside of the thermal transfer tape 31 so as to fill the gap S.

  The manufacturing method of the blank 60 according to the present embodiment includes the following steps.

  As shown in FIGS. 12 and 11A, similarly to the first embodiment, the thermal transfer tape 31 is wound around the mandrel 43 in the thermal transfer material arranging step. In this embodiment, the mold release agent is not applied to the mandrel 43 in advance. At this time, the thermal transfer tape 31 is spirally wound at a predetermined pitch P along the axial direction of the mandrel 43. As a result, a gap S is formed between adjacent thermal transfer tapes 31.

  As shown in FIG. 12 and FIG. 11C, the prepreg tape 64 is wound around the outside of the thermal transfer tape 31 (bonding process / rolling process). The prepreg tape 64 is wound around the gap S so as to fill the gap S. That is, the prepreg tape 64 is wound spirally along the longitudinal direction of the mandrel 43 at the same pitch P as the winding pitch P of the thermal transfer tape 31. The prepreg tape 64 forms a ridge 63 described later.

  Further, as shown in FIG. 12A, tape-shaped or sheet-shaped cross patterns 65 to 68 are laminated so as to cover the prepreg tape 64. However, the cross patterns 65 to 68 are formed in a required shape in a cutting process in advance as in the first embodiment. In the present embodiment, the cross patterns 65 to 68 are stacked, but the number thereof is not particularly limited. Further, the type or physical properties of the prepreg tape 64, the number of windings, and the types or physical properties of the cross patterns 65 to 68 can be variously changed in accordance with the mechanical strength of the blank 50 to be fired.

  FIG. 12B is a diagram schematically showing the inner wall surface structure of the blank 50 after firing.

  After the thermal transfer tape 31 and the prepreg tape 64 are wound around the mandrel 43 as shown in FIG. 5A, a molding tape (not shown) is wound so as to cover them. This step is the same as that in the first embodiment (taping step: see FIG. 6B). Furthermore, if a baking process is advanced after that, resin contained in the prepreg tape 64 and the cross patterns 65-68 will fuse | melt, and it will harden | cure after entering the said clearance gap S. FIG. Further, as in the first embodiment, when the base material 32 of the molding tape and the thermal transfer tape 31 is removed (tape removal step), as shown in FIG. A spiral recess 63 and recess 69 are formed on the inner wall surface 62 of the blank 60 by the resin. The water repellent paint 25 transferred from the thermal transfer tape 31 is attached to the recess 69.

  In this modification, the fishing line is supported by a convex portion 53 formed in a spiral shape inside the blank 50 and the inner wall surface 51 of the blank 50 is sufficiently water-repellent by the water-repellent paint 25 disposed in the concave portion 52. To demonstrate. By supporting the fishing line on the convex portion 53, the frictional resistance between the fishing line and the blank 50 is further reduced. Moreover, the water repellency of the blank 50 is also maintained as in the above embodiment. Thereafter, the surface of the blank 60 is polished, cut into a predetermined size, and required coating is applied (finishing / cutting process), whereby the second joint 14 is completed. The other sections are manufactured in the same manner.

  In the present embodiment, the ridge 63 is formed on the inner wall surface 62 of the blank 60 after the baking step by winding the prepreg tape 64 after the thermal transfer tape 31 is wound around the mandrel 43. Therefore, as in the modification of the first embodiment, when the blank 60 functions as a component of a fishing rod, the fishing line is supported by the ridge 63, and the frictional resistance between the fishing line and the blank 60 is reduced. Can be kept small. In particular, in the present embodiment, the shape of the ridge 63 can be changed depending on the number of windings and the winding method of the prepreg tape 64, whereby the frictional resistance between the fishing line and the blank 60 can be further reduced. Moreover, the water repellency of the blank 60 is also maintained as in the above modification.

  In the present embodiment, the prepreg tape 64 is wound so as to enter the gap S formed by spirally winding the thermal transfer tape 31, but is superimposed on the thermal transfer tape 31. It may be wound. In this case, the water repellent paint 25 is applied to the top of the ridge 63. Even in this case, high water repellency of the blank 60 and reduction in contact resistance between the fishing line and the blank 60 are realized.

DESCRIPTION OF SYMBOLS 10 ... Fishing rod 11 ... Fishing rod main body 13 ... 1st node 14 ... 2nd node 15 ... 3rd node 15 ... 4th node 16 ... 5th Section 24 ... Inner wall surface 25 ... Water repellent paint 26 ... Release agent 27 ... Front surface 28 ... Back side 31 ... Heat transfer tape 32 ... Base material 41 ... Prepreg 42 .. Cross pattern 43 ... Mandrel 44 ... Edge 45 ... Molding tape 46 ... Furnace 47 ... Blank 50 ... Blank 51 ... Inner wall surface 52 ... Recess 53 ...・ Protrusions 60 ... Blank 61 ... Pre-preg tape 62 ... Inner wall surface 63 ... Convex strips 64 ... Pre-preg tape 65 ... Cross pattern 66 ... Cross pattern 67 ... Cross pattern 68 ... Cross pattern 69 ... Recess

Claims (6)

A first step in which a sheet-like or tape-like prepreg reinforced with fibers is wound around a core metal, and a second step in which a fishing rod blank is fired by performing a heating step after the first step. A method for producing a fishing rod blank, comprising:
A fishing rod having a water repellent paint and including a third step in which a thermal transfer member for transferring the water repellent paint to the prepreg during the firing is wound around the core before the prepreg is wound around the core. Of manufacturing blanks. The thermal transfer member is
A sheet-like or tape-like substrate having a front surface and a back surface, and the water-repellent paint carried on the surface of the substrate;
The method for manufacturing a fishing rod blank according to claim 1, wherein in the third step, the thermal transfer member is wound around the core metal so that the back surface of the thermal transfer member faces the core metal.   The method for manufacturing a fishing rod blank according to claim 1 or 2, wherein the thermal transfer member is spirally wound around the core metal so that no gap is generated in the longitudinal direction of the core metal.   The method for manufacturing a fishing rod blank according to claim 1 or 2, wherein the thermal transfer member is spirally wound around the core metal so that a predetermined gap is formed in the longitudinal direction of the core metal. The first step includes a step in which a tape-shaped prepreg is spirally wound around the core metal at a predetermined pitch in order to form a protrusion on the inner wall surface of the blank after firing,
The fishing rod blank manufacturing method according to claim 4, wherein the thermal transfer member is spirally wound around the metal core at the predetermined pitch before the step. A fishing rod blank in which a sheet-like or tape-like prepreg reinforced with fibers is wound around a core metal and fired by a heating process,
A fishing rod blank in which water-repellent paint is transferred to the inner wall surface by heat during firing.

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