Fishing rod and method for forming a fishing rod grip

Abstract

To provide a fishing rod having a comfortable grip, and capable of obtaining a slip prevention effect, when forming a grip on a fishing rod by using an inkjet printer.SOLUTION: In a fishing rod, a protrusion constituting a grip on the rod surface is formed by an inkjet printer, and the protrusion is printed by multiple times of recoating so that the height becomes 80 μm or higher, and the surface is leveled so that edges do not exist.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a fishing rod having a grip that is characterized by its grip for holding and holding, and a method for forming a fishing rod grip. [Background technology]

[0002] Conventionally, a fishing rod is provided with a grip at the base end. Usually, the grip is formed by attaching a separate flexible member to the outer periphery of the rod shaft, but it is possible to form such a grip by printing. When forming the grip by printing, it is necessary to form it so that it is not slippery and is comfortable to hold when grasped and held.

[0003] Known methods for forming grips by printing include a method using screen printing as disclosed in Patent Document 1. Patent Document 2 also discloses a method using a transfer sheet having a printing ink layer and an adhesive layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 4-59857 [Patent Document 2] Japanese Patent Publication No. 7-298808 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventionally, when attempting to form a grip on the rod surface by printing as described above, various problems arise. With the screen printing disclosed in Patent Document 1, it is difficult to print thickly, and the printed portion is formed with sharp edges 90a of the raised printed portion (convex portion) 90 on the surface 80A of the rod 80, as shown in FIG. 7. In addition, performing screen printing multiple times to make the convex portion higher is not practical because accurate positioning is difficult. In addition, when a transfer sheet is used as in Patent Document 2, the cost is increased by the amount of the sheet. Furthermore, since a sheet member is adhered to the circumferential surface, the adhesion may be reduced depending on the adhesion conditions.

[0006] In addition, it is known to use an inkjet printer as a method for printing on the surface of a fishing rod, but such a printing method is usually designed to form patterns and characters. In this case, as shown in Figure 7, if the edge 90a of the printed portion 90 is not made as sharp as possible (the edge 90a is formed to be approximately a right angle), the pattern or character will become blurred and visibility will be poor. In other words, in inkjet printing, the corners are made as prominent as possible to improve visibility.

[0007] Furthermore, since it is not desirable to make a fishing rod heavy, there is no consideration given to ensuring a sufficient height (thickness) of the protrusions. According to an evaluation of gripping ability conducted by the present inventor, if the height is not at least 80 μm, it cannot be felt as a grip and the anti-slip effect is insufficient. When printing on a fishing rod using a conventional inkjet printer, there is no consideration given to forming a grip with protrusions of such height. In other words, when attempting to form a fishing rod grip by printing, the height of the printed protrusions and the shape of the surface are not sufficiently considered, so it is not possible to achieve a grip that is comfortable and prevents slipping.

[0008] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a fishing rod that is comfortable to hold and has an anti-slip effect when a grip is formed on the fishing rod using an inkjet printer, and a method for forming such a fishing rod grip. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the present invention provides a fishing rod in which a convex portion constituting a grip is formed on the surface of the rod by an inkjet printer, the convex portion being printed in multiple overlays to a thickness of 80 μm or more, and the surface being leveled so that no edges exist.

[0010] As described above, the grip having the convex portions formed by inkjet printing has a height of 80 μm or more, so that the grip is easy to grip with the palm and fingers when gripped, and has an anti-slip effect, improving the operability of the fishing rod. In addition, the surface of the convex portions is leveled and has no corners, so that the grip is comfortable.

[0011] The present invention also provides a method for forming a grip by printing convex portions on the surface of a rod using an inkjet printer, the method comprising the steps of: chucking and rotating the rod while scanning a head in the axial direction to eject ultraviolet-curable ink onto the surface of the rod; and curing the ink by irradiating the ink with UV light after the ink has been applied. (1) The rotation speed of the rod is set to 90 to 360 rpm. (2) The ink has a viscosity of 10.5±1.0 mPa·s (45°C). (3) The UV irradiation is performed 0.03 to 0.01 seconds after the ink is ejected. (4) The peak intensity of the UV radiation is 700 mW / cm 2 ~950mW / cm 2 Set to (5) Apply multiple coats of paint so that the thickness of the convex parts is 80 μm or more. The convex portions are formed by inkjet printing so as to satisfy the above condition.

[0012] By adjusting the above conditions, i.e., the rotation speed of the rod, the viscosity of the ink, the time from ink attachment to UV irradiation, the UV irradiation intensity, and multiple coatings (printing by rotating the rod multiple times), the centrifugal force acting on the rod, combined with the above conditions, makes it possible to form leveled convexities. In other words, with this printing method, it is possible to obtain a grip that is easy to grip in the palm of the hand when held, prevents slipping, and provides a comfortable grip. Effect of the Invention

[0013] According to the present invention, a fishing rod that is comfortable to hold and has an anti-slip effect can be obtained by using an inkjet printer, and a method for forming a grip for such a fishing rod. [Brief description of the drawings]

[0014] [Figure 1] 1 is a diagram showing an embodiment of a fishing rod according to the present invention. [Diagram 2] FIG. 4 is a schematic diagram showing an inkjet printer for forming the protrusions of the grip. [Diagram 3] FIG. 4 is a diagram showing an overview of a state in which a convex portion is formed on the surface of a rod. [Figure 4] FIG. 4 is a diagram showing the shape of a protrusion formed on the surface of a rod. [Diagram 5] 5A and 5B are diagrams showing an example of a protrusion formed on a grip, in which (a) is a perspective view and (b) is a cross-sectional view taken along line AA in FIG. [Figure 6] 5A and 5B are diagrams showing another example of a protrusion formed on a grip, in which (a) is a perspective view and (b) is a cross-sectional view taken along line BB in FIG. [Figure 7] 13 is a cross-sectional view of a rod having protrusions formed thereon by a conventional printing method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a fishing rod and a method for forming a grip thereof according to the present invention will be described with reference to the drawings.

[0016] 1 is, for example, a telescopic fishing rod, and includes a butt rod 3, and a plurality of middle rods 5 and a tip rod 7 that can be stored in the butt rod 3 (the number of joints is optional). In this case, the fishing rod may be of a parallel joint type, a spigot type, etc., and may be a fishing rod that includes a reel seat and a fishing line guide, and to which a reel is attached.

[0017] As is well known, each rod is formed by winding fiber reinforced plastic material (FRP; prepreg sheet), and a grip 10 having a convex portion is formed on the surface (material surface) of the butt rod 3 according to a printing method described below. The grip 10 is formed by printing ultraviolet-curing ink (hereinafter also referred to as UV ink) on the gripping and holding area of ​​the rod using an inkjet printer. The UV ink can be colorless (clear ink), colored (color ink), or shiny ink such as metallic color, and is applied to the surface of the base rod according to a preset printing pattern. In this case, the use of UV ink makes it possible to apply multiple coats of ink continuously, making it possible to form a convex portion with a certain height. Note that thermosetting ink requires a thermal curing process after application, so it cannot be applied multiple times and sufficient height cannot be ensured.

[0018] 2 is a schematic diagram of an inkjet printer 50 for forming the convex portions constituting the grip 10 of the base rod 3. The inkjet printer 50 used in the present invention includes a head 51 that is reciprocated in the scanning direction (the axial direction of the base rod) by a carriage equipped with a nozzle for discharging UV ink 30, and a UV curing light source 52 that is disposed in a position different from the installation position of the carriage (in the figure, a position opposite by 180°).

[0019] In the present invention, when forming a convex portion on a tubular body such as the base rod 3 by the inkjet printer 50, both ends of the base rod 3 are chucked and the head 51 of the inkjet printer is scanned in the axial direction while rotating the base rod 3, and the amount of droplets of the UV ink 30 discharged from the nozzle, the discharge position, the amount of light irradiated by the light source 52 for UV curing, the irradiation time, the time until irradiation, etc. are controlled according to the shape of the convex portion to be formed on the surface. That is, the UV ink 30 attached to the surface of the base rod 3 is cured by the light source 52 and fixed in that state. In this embodiment, a single color of clear ink is used, and therefore the discharge nozzle is configured to control the discharge of one color as the head 51 scans.

[0020] In the above-mentioned inkjet printing, the shape of the convex portion formed on the surface of the base rod can be adjusted by controlling the viscosity of the ejected UV ink, the rotation speed of the base rod, the time until the leveling process (the time from when the UV ink is attached to when the droplets spread due to the centrifugal force acting on the base rod and when they are hardened by irradiation with light), and the irradiation intensity of the light source. In this case, by controlling the amount of UV ink ejected from the ejection nozzle, it is possible to change the density of the ink that is attached to the surface in dots (ink concentration). Specifically, if the ink concentration is high, the surface is likely to become flat when leveled, and if the ink concentration is low, fine unevenness is likely to occur on the surface when leveled, making it possible to change the reflection state (glossiness).

[0021] When droplets of UV ink are discharged from a discharge nozzle using an inkjet printer, they are attached to the surface of the base rod 3 as shown in FIG. 2 (the attached droplets 30A are shown in an exaggerated manner). In this case, if light is immediately irradiated on the droplets in the attached state, the droplets will immediately harden, making it difficult to level them due to the centrifugal force acting on the rotation of the base rod. In other words, each convex part will not have a sufficiently leveled shape (a curved, smooth surface), and the edges will be sharp. In response to this, it is possible to transfer and harden the attached ink by applying ink of a certain viscosity (ink with transferability), adjusting the rotation speed and the time until light irradiation to a certain level, and irradiating light with a certain intensity.

[0022] That is, as shown in Figures 2 to 4, centrifugal force acts on the UV ink depending on the viscosity of the UV ink, the rotational speed of the base rod 3 after the ejected ink droplets 30 adhere to the surface, and the time until light is irradiated from the light source 52, causing the adhered droplets 30 to spread along the surface 3A. By irradiating the droplets thus spread with light of a predetermined intensity, it is possible to form a leveled convex portion (a convex portion 35 that is raised from the surface and has no edges).

[0023] In this case, the inventor conducted experiments under various conditions to form a grip 10 that is comfortable to hold and has an anti-slip effect, and found that by printing using inkjet printing under the following conditions, it was possible to form a convex portion 35 that provided such an effect.

[0024] (1) Rotation speed The rotation speed of the base rod depends on the specifications of the inkjet printer used, but if the rotation speed is too fast, the attached droplets will easily scatter, and if the rotation speed is too slow, sufficient centrifugal force effect cannot be obtained. Here, taking into consideration the viscosity of the UV ink used, the rotation speed of the base rod is set to 90 to 360 rpm (such a rotation speed is within the range covered by normal inkjet printers). This range is also set in consideration of the fact that the diameter of the base rod on which printing is performed may change.

[0025] (2) Viscosity of UV ink The viscosity of the ink is set in relation to the rotation speed of the base rod, but if the base rod is rotated within the above-mentioned range, the ink viscosity should be 10.5±1.0 mPa s (45°C). In other words, it is sufficient to use ink with a viscosity that allows the UV ink to spread and level when centrifugal force is applied before the UV ink is cured by the light source 12.

[0026] (3) Time until UV irradiation As mentioned above, if a light source is provided on the carriage and the UV ink is discharged and cured at the same time, the leveling effect due to the centrifugal force acting on the butt rod cannot be obtained sufficiently, so the ink is not cured at the same time as it is applied. Specifically, taking into consideration the rotation speed and the viscosity of the UV ink, the ink is irradiated 0.03 to 0.01 seconds after it is discharged.

[0027] (4) Peak intensity of UV irradiation If the UV light from the light source is too weak, it will not cure sufficiently, so a certain level of irradiation intensity is required. The peak intensity of UV irradiation is 700mW / cm 2 ~950mW / cm 2 By setting the temperature within this range, it is possible to obtain a sufficient hardening effect in a leveled state.

[0028] (5) Thickness of the protrusions formed The thickness (height) T of the protrusions 35 is preferably 80 μm (0.08 mm) or more in order to form a grip 10 that is comfortable to hold and has a slip prevention effect. In this case, when the protrusions are formed under the above conditions, the protrusions 35 are formed with a thickness of about 0.02 to 0.03 mm in one printing, so at least three recoats are applied. In this case, as shown in FIG. 4, in one printing, the protrusions 35 have no edges and have a so-called substantially semicircular (arc-shaped) surface, and even if recoats are applied on this, the thickness increases in a similar shape. In other words, even if recoats are applied three or more times, it is possible to form a grip 10 composed of a predetermined thickness and uneven parts without edges (the surface of the recess is the surface of the base rod).

[0029] In addition, while general printing methods (screen printing, etc.) do not allow for repeated application in the same position, by using inkjet printing as in the present invention, the position where the UV ink is applied can be controlled, so that the desired uneven shape can be easily and quickly formed. In addition, the thickness of the protrusions 35 is not limited, but is preferably 150 μm or less in consideration of processing time, stability, etc.

[0030] FIG. 5 is a diagram showing an example of a grip 10 on which protrusions 35 are formed by the printing method described above. By inkjet printing, various convex parts 35 (concave parts 35a) can be formed, but in this example, the convex parts formed on the surface are formed in a honeycomb pattern with adjacent polygonal shapes. That is, since the hexagonal parts are convex parts 35 and the borders are concave parts 35a (non-printed parts) in the honeycomb pattern, when gripped and held, the convex parts 35 having a predetermined height in all directions, axial, circumferential and inclined, are easily caught, and a grip structure that is comfortable to grip and has a high anti-slip effect is obtained. In the drawings, the honeycomb pattern is hexagonal, but it may be configured in other shapes such as pentagonal, octagonal, etc.

[0031] FIG. 6 is a diagram showing another example of a grip on which protrusions are formed by the above-mentioned printing method. In this example, the protrusions formed on the surface are formed in a honeycomb pattern, similar to the configuration shown in Figure 5, but the outline parts (boundaries) of the hexagons form the protrusions 35, and the insides of the hexagons form the recesses 35a (non-printed parts).

[0032] In this way, by using inkjet printing, it is possible to easily form a pattern of leveled convex parts (concave and concave parts). Therefore, it is possible to easily form a grip that is comfortable to hold and has a high anti-slip effect without attaching a soft member as in the past.

[0033] The convex portions 35 formed as described above may be printed directly on the surface 3A of the FRP material. In this case, the surface fibers create unevenness, which enhances the anchoring effect between the printed convex portions and the printed convex portions, making it difficult for the convex portions to peel off. Alternatively, the surface of the material is primed to form a base layer (such as by applying a primer or polishing the surface to form polishing streaks), which improves the adhesion strength of the UV ink and makes it difficult for the convex portions to peel off. In particular, if the surface 3A is a curved surface formed by a tubular body, polishing can remove adhering impurities and enhance the anchoring effect, making it possible to form stable convex portions.

[0034] It is also preferable to form a protective film of a clear layer (including a color clear layer) on the surface of the formed convex portion 35. Such a clear layer may be formed by applying a UV-curable transparent ink directly after forming the convex portion by the inkjet printing, or may be formed separately by a clear coating or the like. By forming such a protective film, the surface of the protrusion 35 can be protected, and in the case of a narrow protrusion shape as shown in Fig. 6, it is possible to effectively prevent breakage, chipping, etc. Also, the prism effect can enhance the three-dimensional effect.

[0035] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and can be practiced in various modifications without departing from the gist of the present invention. In the above embodiment, the grip formed by inkjet printing has been described using the butt rod 3 as an example, but it can be applied to other parts as well. For example, in casting rods and large fishing rods for boats, grips may be formed on parts other than the butt rod. For example, in the case of the fishing rod shown in FIG. 1, grips may be provided on the butt, tip or middle part of the middle rod 5 as anti-slip, and the above-mentioned inkjet printed grip may be formed on a specified area of ​​such rod.

[0036] For example, the base treatment may be performed by forming various color patterns (including multiple colors and transparent patterns) on the surface of the material through surface treatment such as printing, painting, plating, etc. Furthermore, the surface polishing may be performed by forming polishing streaks with directionality or by forming polishing streaks with random unevenness.

[0037] Furthermore, the shape (pattern) of the protrusions 35 is not limited as long as they are not slippery and provide a comfortable grip. Since the effect of preventing slipping can be obtained by forming the protrusions oriented in different directions, it is possible to appropriately modify the shape, for example, by forming protrusions oriented in multiple directions in a lattice pattern, forming multiple protrusions, combining different protrusion shapes and thicknesses, etc. Furthermore, the leveling may have some unevenness on the surface of the protrusions as long as it does not cause discomfort in the grip. [Explanation of symbols]

[0038] 1 fishing rod 3 Original rod 3A Material surface 10 Grip 35 Convex 35a Recess 50 Inkjet Printer

Claims

1. A fishing rod having a grip composed of a number of protrusions that rise to a certain height from the surface of the rod, A fishing rod characterized in that each of the numerous protrusions has a height of 80 μm or more, which is formed by applying ultraviolet-curable ink at least three times by inkjet printing while rotating the rod, and each protrusion has a curved, smooth surface formed by the centrifugal force caused by the rotation of the rod acting on droplets of the ultraviolet-curable ink.

2. The surface of the rod is formed of a prepreg sheet, 2. The fishing rod according to claim 1, wherein the plurality of protrusions are raised to a certain height from the surface of the rod when the surface of the rod is subjected to a base treatment.

3. 3. The fishing rod according to claim 1, wherein the plurality of protrusions are formed in a honeycomb pattern of adjacent polygonal shapes.

4. 4. The fishing rod according to claim 1, wherein the surfaces of the numerous protrusions are coated with a clear layer.

5. A method for forming a grip by printing a convex portion on a surface of a rod using an inkjet printer, comprising the steps of: a step of chucking and rotating the rod while scanning the head in the axial direction to eject ultraviolet-curable ink onto the surface of the rod; an ultraviolet curing step of curing the ink by irradiating it with UV light after the ink has been applied; having (1) The rotation speed of the rod is set to 90 to 360 rpm. (2) The ink has a viscosity of 10.5±1.0 mPa·s (45° C.) (3) The UV irradiation is performed 0.03 to 0.01 seconds after the ink is ejected. (4) The peak intensity of the UV radiation is 700 mW / cm ２ ~950mW / cm ２ Set to (5) Apply multiple coats of paint so that the thickness of the convex parts is 80 μm or more. The method for forming a fishing rod grip is characterized in that the convex portion is formed by inkjet printing so as to satisfy the above condition.

6. 6. The method for forming a fishing rod grip according to claim 5, further comprising the step of: after forming the protrusions, coating the surfaces with a clear layer.

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