JP3033051B2 - Method of manufacturing a rod and its rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a rod in which the handle portion of the rod is made larger in diameter than other rod parts in consideration of the easiness of operation by an angler and the rod. .

[0002]

2. Description of the Related Art To manufacture a rod of this type, a plurality of prepregs in which reinforcing fibers are aligned in one direction are laminated in a plurality of layers, and the directions of the reinforcing fibers in each layer are different from each other in a circumferential direction and an axial direction. In this way, the alignment direction was set. However, even if a rod is formed by winding a prepreg of a length equivalent to the shaft center length of the rod material, wrinkles may occur at this part due to the enlarged diameter part, and the groove part due to this wrinkle A large number of work steps are required to fill the gap, and the strength of the large-diameter portion may be insufficient.

[0003]

Therefore, a prepreg is formed on a narrow tape as a lower winding layer, and this tape is wound not only on the enlarged diameter portion but also on the entire length of the rod material. However, in this case, since the tape is wound over the entire length, the work time is lengthened and the production burden is increased. An object of the present invention is to provide a method of manufacturing a rod capable of securing a strength at an enlarged diameter portion and producing a rod that can be used stably for a long period of time with a reduced production load, and a point of proposing the rod.

[0004]

A characteristic feature of the method for manufacturing a rod according to the present invention is to provide a rod material having a large-diameter hand grip (1b) whose inner and outer diameters are rapidly increased near the rod end. An enlarged diameter part (1c) is formed in the cored bar (1) to be formed, and a reinforcing fiber is aligned with the enlarged diameter part (1c) in the circumferential direction and corresponds to the enlarged diameter part (1c). A plurality of prepreg-shaped lower winding layers (3) wound around the entire length, and reinforcing fibers are arranged in one direction in a length corresponding to the entire length of the rod material on the outer layer of the lower winding layers (3). Is that the prepregs (4) are laminated. Further, the characteristic configuration of the rod of the present invention is that the inner diameter and the outer diameter are sharply increased near the rod end, and the enlarged diameter portion (1 b) is formed to form a rod material having a large-diameter hand grip (1 b). 1c) a rod provided with the enlarged diameter portion (1c),
The prepreg-shaped lower winding layer (3) is wound around the reinforcing fiber in the circumferential direction and the length corresponding to the axial center length corresponding to the enlarged diameter portion (1c), and the lower winding layer (3) is wound. A plurality of prepregs (4) in which reinforcing fibers are aligned in one direction with a length corresponding to the entire length of the rod material are laminated on the outer layer of the above, and the operation and effect are as follows.

[0005]

The method of manufacturing a rod according to the present invention is based on a manufacturing method in which a prepreg having reinforcing fibers in one direction limited to an enlarged diameter portion is provided in an inner layer of a plurality of layers of prepreg forming a rod material. Since the strength of the enlarged diameter portion can be improved and the prepreg is wound around the enlarged diameter portion, the number of manufacturing steps is small, and the production cost can be reduced. In the rod of the present invention, since the prepreg is wound around only the enlarged diameter portion, the thickness of the prepreg, the orientation pitch of the reinforcing fibers, and the like can be arbitrarily set, and a strength configuration different from other portions can be adopted. Since the portion is strongly gripped by the angler, the strength against rubbing can be greater than other portions.

[0006]

Therefore, the following effects can be obtained.
Since the prepreg is wound around the enlarged diameter portion, wrinkles are less likely to occur at the portion where the small diameter portion suddenly changes to the large diameter portion. For this reason, it is possible to suppress the deterioration of the strength, and it is not necessary to refill the grooves formed between the wrinkles after the usual painting work, even when painting. Since the prepreg is wound only on the enlarged diameter portion, the thickness of the prepreg, the orientation pitch of the reinforcing fibers, and the like can be arbitrarily set, and a strength configuration different from other portions can be adopted. Since the portion is strongly gripped by the angler, the strength against rubbing can be greater than other portions. By wrapping the prepreg only at the enlarged diameter portion, the degree of diameter expansion can be reduced, and when wrapping the prepreg over the entire length of the rod material on the outer layer of this prepreg, wrinkles are less likely to occur, and between the layers of the laminated prepreg. It is possible to suppress generation of a poid or the like.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a cored bar 1 has a small-diameter portion 1a that gently expands toward the bottom of the rod, and a grip 1 at the bottom of the rod.
b, and a diameter-enlarging portion 1c that rapidly expands to connect the small-diameter portion 1a and the hand grip portion 1b. A method of forming a rod using the cored bar 1 will be described step by step.
As shown in FIG. 1, a cloth-shaped prepreg 2 in which the direction of the reinforcing fibers is oriented in the circumferential direction and the axial direction is wound around the grip portion 1b. As shown in FIG. 2, a slit tape 3 formed by connecting prepregs in which reinforcing fibers are aligned in the circumferential direction in a tape shape is used as a lower winding layer, and the enlarged diameter portion 1 is formed.
Wind around the area from c to the bottom of the rod. Since the width of the slit tape 3 is shorter than the axial length of the enlarged diameter portion 1c, the slit tape 3 has good conformability to a winding surface when wound around the enlarged diameter portion 1c and has good moldability. As shown in FIG. 3, a prepreg in which reinforcing fibers are aligned in the circumferential direction is wound as the first layer 4 over the entire length of the rod material. As shown in FIG. 4, a prepreg in which reinforcing fibers are aligned in the axial direction is wound as the second layer 5 over the entire length of the rod material. FIG.
As shown in (1), a prepreg in which reinforcing fibers are aligned in the circumferential direction is wound as the third layer 6 over the entire length of the rod material. In order to wind each of the above-mentioned layers around the core 1, as shown in FIG. 4, a prepreg is set on a platen, the core 1 is placed on the prepreg, and the core 1 is put together with the prepreg on its axis. Rotate around and wind and mold. A sponge mat 12 having a thickness of about 5 mm is inserted under the rubber mat 11 set on the surface plate.
The core metal 1 is placed so that the middle part of the enlarged diameter part 1c is located at the end of the rod side of the rod. Next, as shown in FIG.
The prepreg is wound and baked over the entire length of the prepreg to cure the prepreg.

Another manufacturing method corresponding to the above-described molding process will be described. As shown in FIG. 7, the first layer 4 is laminated on the upper surface of the second layer 5, and a reinforcing prepreg 8 in which reinforcing fibers are aligned in the circumferential direction is laminated on the rod tip of the first layer 4, and these are integrally formed. Wrap around cored bar 1. At this time, since the end portions of the second layer 5 are hardly aligned in the enlarged diameter portion 1c, they are covered with the auxiliary sheet 9 as shown in FIG. The periphery of the auxiliary sheet 9 is heated to reduce the level difference from the second layer 5. As shown in FIG. 8, a third layer 6 in which reinforcing fibers are aligned in the circumferential direction is laminated on a prepreg as a fourth layer 10 in which reinforcing fibers are aligned in the axial direction, and these are integrated into a second layer. Wrap over layer 5. Auxiliary sheet 9
Is the same as attaching. As a general manufacturing method, when the upper layer is wound on the lower layer, one end of the upper layer is initially bonded to the lower layer (so-called flagging), but by heating and melting one end of the upper layer, Initial bonding is performed on the lower layer. The initial bonding position needs to be displaced in the circumferential direction from 60 to 120 degrees from the winding end position of the lower layer.

[Another Embodiment] The lower winding layer 3 may be formed of a sheet-shaped prepreg having a length corresponding to the axial length of the enlarged diameter portion 1c instead of a tape shape. As the first layer 4, a configuration may be adopted in which a three-layer tape formed by connecting prepregs in a tape shape is wound.

[0010] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which a cloth prepreg is wound around a cored bar.

FIG. 2 is a plan view showing a state in which a tape-shaped prepreg is wound around an enlarged diameter portion.

FIG. 3 is a plan view showing a state in which the first layer prepreg is wound over the entire length of the rod material.

FIG. 4 is a plan view showing a state in which a second layer prepreg is wound over the entire length of the rod material.

FIG. 5 is a plan view showing a state in which a third layer prepreg is wound over the entire length of the rod material.

FIG. 6 is a plan view showing a state in which a forming tape is wound over the entire length of the rod material.

FIG. 7 is a plan view showing a state in which prepregs of a first layer and a second layer are wound over the entire length of the rod material.

FIG. 8 is a plan view showing a state in which prepregs of a third layer and a fourth layer are wound over the entire length of the rod material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core metal 1b Hand grip part 1c Enlarged diameter part 3 Lower winding layer 4 Prepreg

Claims (2)

(57) [Claims] In order to form a rod material having a large-diameter hand grip (1b), the inner diameter and the outer diameter are rapidly increased near the rod end.
An enlarged diameter portion (1c) is formed on the cored bar (1), and the reinforcing fibers are aligned in the circumferential direction on the enlarged diameter portion (1c) and a length corresponding to the axial core length corresponding to the enlarged diameter portion (1c). A plurality of prepregs (4) in which a prepreg-shaped lower winding layer (3) is wound around the outer layer of the lower winding layer (3) and reinforcing fibers are arranged in one direction in a length corresponding to the entire length of the rod material. ). 2. A rod having an enlarged-diameter portion (1c) formed so as to form a rod material having a large-diameter hand grip (1b) with an inner diameter and an outer diameter increased rapidly near a rod end. In the enlarged diameter portion (1c), the prepreg-shaped lower winding layer (3) is formed such that reinforcing fibers are aligned in the circumferential direction and has a length corresponding to the axial core length corresponding to the enlarged diameter portion (1c). A plurality of prepregs (4) in which reinforcing fibers are aligned in one direction with a length corresponding to the entire length of the rod material are laminated on the outer layer of the lower winding layer (3) while being wound. And a rod.