JP2007209605A - Masking method of golf club head and manufacturing method of golf club - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a masking method of a golf club head capable of preventing inferior masking of a masking sheet to be stuck to a masking area of the golf club head and improving the productivity; and a manufacturing method of a golf club. <P>SOLUTION: At least a single circumferential edge of a plurality of masking sheets to be stuck to the masking area consisting of a curved face of the golf club head is constituted of a masking end formation part forming the edge of the masking area and a superposition part superposed on another masking sheet; the superposition part has notches, respective masking end forming parts of the plurality of masking sheets are continuously disposed along the end edge circumference of the masking area, and the superposition part is superposed on another masking sheet not to produce clearances due to the notches. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for masking a golf club head and a method for manufacturing a golf club. is there.

Conventionally, general golf club heads (hereinafter sometimes referred to as “heads”) have been coated on the head surface for the purpose of decorativeness or rust prevention. For example, as described in Japanese Patent Application Laid-Open No. 2001-95956 (Patent Document 1), the face is coated with the same color as the face and crown, or the face is made of a metal material. In many cases, the head is partially painted, for example, the crown is painted.
For example, when only the face portion 2 and the crown portion 3 are painted in the same color in the head 1 as shown in FIG. 6, the sole portion 4 and the side portion are previously painted when the face portion 2 and the crown portion 3 are painted. It is necessary to mask 5 and prevent the paint from adhering to those portions.

As described above, as a method for masking a region not to be painted as a masking range, a method in which a plurality of planar masking sheets are overlapped and pasted on the masking range is conventionally used.
However, when the masking range is a curved surface like a golf club head, it is difficult to follow a flat masking sheet along the curved surface, and a gap is also generated in the peripheral portion of the masking sheet serving as an edge of the masking range. There is a problem that the paint enters the gap in the painting process, resulting in poor painting, or blasting in the blasting process performed before painting. In order to prevent such masking defects that cause coating defects and blast defects, it is necessary to superimpose many small masking sheets. In this case, however, there is a problem that workability and productivity are lowered. .

JP 2001-95956 A

  The present invention has been made in view of the above problems, and by improving the alongness of the masking sheet to be attached to the masking range composed of the combination of the curved surfaces of the golf club head, the cause of poor coating and the like. It is an object to provide a golf club head masking method and a golf club manufacturing method capable of effectively preventing masking defects and increasing the productivity by reducing the number of masking sheets to be superimposed. It is said.

In order to solve the above problems, a first invention is a masking method at the time of painting a golf club head in a golf club manufacturing process,
Providing a plurality of masking sheets to be attached to a masking range consisting of a combined area of curved surfaces of the golf club head;
The peripheral edge of at least one masking sheet is composed of a masking edge forming portion that forms an edge of the masking range and an overlapping portion that is overlapped with another masking sheet. Provide a notch that can be fitted along the curved surface while deforming,
While each masking edge forming portion of the plurality of masking sheets is continuously disposed along the entire edge of the masking range,
Provided is a masking method for a golf club head, wherein the overlapping portion of the peripheral edge of the masking sheet is masked by overlapping with another masking sheet so as not to generate a gap due to the notch.

  As described above, the peripheral edge of the masking sheet used in the present invention is composed of the masking edge forming portion that forms the edge of the masking range and the overlapping portion that overlaps with another masking sheet, and the overlapping Notch is provided in the part. Thereby, the masking edge forming part is made to coincide with the edge of the masking range without a gap, and the overlapping parts separated by the notch are brought close to each other according to the curved surface, or the notch is deformed by overlapping. The masking sheet can be placed along the curved surface.

  Further, according to the above configuration, the entire periphery of the edge of the masking range is continuously formed without a gap at each masking edge forming portion of the plurality of masking sheets, and no gap is generated at the overlapping portion having the notch. Since it is superposed with another masking sheet, the entire masking range can be reliably masked. Therefore, it is possible to prevent masking defects that cause paint defects and blast defects.

  In addition, as described above, the masking sheet can be easily moved along the curved surface by deforming the notch in accordance with the degree of bending. If it is a size that can match the edge, it does not have to be further reduced. Therefore, it is possible to increase the size per sheet as compared with the conventional masking sheet, to reduce the number of sheets to be overlapped, and to improve workability.

If the degree of bending is large, the distance between the notches can be reduced and the number of notches can be increased to better follow the curved surface, while if the degree of bending is small, the number of notches can be reduced. Depending on the case, notches may not be provided in the overlapping portions of some masking sheets.
In some or all of the masking edges, the painted edges may be processed by polishing or the like by post-processing after painting to form the painted edges as the final head product. The masking end forming portion of the masking sheet may be provided with a notch that can be fitted along the curved surface while being deformed to further improve workability.

  The masking sheet used for masking one masking range is 2 to 5 sheets, and the notch provided in the masking sheet is a V-shaped notch formed at intervals along the edge of the overlapping portion and It is preferable to consist of slit-shaped notches.

  The number of the masking sheets used for masking one masking range varies depending on the size and shape of the masking range. Usually, in the masking of a golf club head, the number of sheets is two as described above. By using ˜5 sheets, it becomes possible to perform masking reliably without causing masking failure. When the number of the masking sheets exceeds 5, the workability tends to be lowered. In particular, the number of sheets is preferably 2 to 3.

The area of each masking sheet ^is preferably 2 cm 2 100 cm ^2. When the area of each masking sheet is less than 2 cm ² , the number of sheets to be overlapped increases, and the work becomes fine because it becomes a fine work. On the other hand, when the area of each masking sheet exceeds 100 cm ² , It tends to deteriorate along the curved surface. More preferably, the area of each masking sheet is 10cm ² ~80cm ^2, particularly ^preferably from 20cm ² ~70cm 2.

  In addition, as described above, the notch provided in each masking sheet has a V shape and / or a slit shape, so that it is difficult to form a gap even when overlapping portions separated by the notch are overlapped, and masking is performed. The sheet can smoothly follow the curved surface. The masking sheet can be produced by being punched with a punching die having a predetermined shape. However, if the notch is slit-shaped, the blades of the slit portion of the punching die intersect and the cost of the die is reduced. It is particularly preferable that the notch has a V shape because it may increase the durability or decrease the durability of the mold.

  The notch depth, which is the vertical distance from the upper end to the lower end of the notch, varies depending on the size of the masking sheet and the degree of curvature of the head, but is usually preferably 5 mm to 40 mm, and particularly preferably 10 mm to 30 mm. preferable. If the notch depth is less than 5 mm, the masking sheet may be difficult to follow along the curved surface, whereas if the notch depth exceeds 40 mm, the overlapping margin between the overlapping parts separated by the notch increases. Costs may increase.

Moreover, the said masking sheet consists of a resin sheet which consists of a vinyl chloride resin or polyolefin resin, and provided the adhesion layer on the back surface, and it is preferable that the thickness of this masking sheet shall be 0.08 mm-0.18 mm.
Even if the vinyl chloride resin is thick, it is easy to follow the curved surface, and even if the polyolefin resin is thin, high strength can be obtained, so these resins are suitable as a material for the masking sheet, and a resin sheet provided with an adhesive layer on the back surface This makes it very easy to attach the masking sheet.

  In addition, as described above, the thickness of the masking sheet is preferably 0.08 mm to 0.18 mm. If the thickness is less than 0.08 mm, the sheet is liable to be damaged in the blast treatment before coating. On the other hand, if the thickness exceeds 0.18 mm, it may be difficult to follow along the curved surface, or the difference in the presence / absence of coating at the masking end may become large, resulting in poor appearance. More preferably, the thickness of the masking sheet is 0.10 mm to 0.15 mm, particularly preferably 0.115 mm to 0.14 mm.

  In the case where the masking range is one region formed from the face part to another part (for example, the sole part), the face side masking sheet that forms the edge of the masking range in the face part, It is preferable to perform masking from the other part side masking sheet that forms the edge of the masking range in the other part.

The thickness of the face side masking sheet is preferably 0.08 mm to 0.15 mm. When the thickness of the face-side masking sheet exceeds 0.15 mm, the coating level difference becomes large, and coating peeling tends to occur when the ball hits that portion. On the other hand, if the thickness of the face-side masking sheet is less than 0.08 mm, as described above, the sheet is easily damaged in the blasting process before coating. The thickness of the face side masking sheet is more preferably 0.10 mm to 0.14 mm, and particularly preferably 0.11 mm to 0.13 mm.
Further, as the material of the face side masking sheet, it is preferable to use a polyolefin resin which can obtain a sufficient strength even if it is thin.

On the other hand, the masking sheet on the other part side is slightly thinner than the masking sheet on the face side, and is slightly thicker than the masking sheet on the face side in terms of increasing sheet strength and ensuring durability in blasting. preferable. Therefore, the thickness of the other site side masking sheet is preferably 0.10 mm to 0.18 mm, more preferably 0.11 mm to 0.15 mm, and particularly preferably 0.115 mm to 0.14 mm.
Further, as the material of the other part side masking sheet, it is preferable to use a vinyl chloride resin that easily follows the curved surface even if it is somewhat thick.
The value of the thickness of the face side masking sheet / the thickness of the other part side masking sheet is preferably 0.80 to 0.98, more preferably 0.85 to 097, and particularly preferably 0.8. 90-0.96.

  The second invention is a golf club manufacturing method including the step of masking with the golf club head masking method according to any one of claims 1 to 3 and coating the golf club head. providing.

  According to the above configuration, since the golf club head is coated by masking with the masking method which is excellent in workability and can greatly reduce the occurrence of masking defects, poor coating and blast defects can be prevented, and high quality golf can be prevented. Clubs can be manufactured with high productivity.

  As described above, according to the masking method for a golf club head of the present invention, the peripheral edge of at least one masking sheet of the plurality of masking sheets is formed on the masking edge forming portion that forms the edge of the masking range, and the other masking. It is composed of an overlapped part that is superposed on the sheet, and a notch is provided in the overlapped part, so that the notch of the overlapped part is curved while the masking end forming part is aligned with the edge of the masking range without any gap. By deforming according to the surface, the masking sheet can be made to follow the curved surface.

  In addition, the entire periphery of the edge of the masking area is continuously formed without gaps at each masking edge forming portion of the plurality of masking sheets, and the overlapping portions having notches are overlapped with other masking sheets so that no gap is generated. As a result, the entire masking range can be reliably masked, and masking defects that cause poor painting and blasting can be greatly reduced.

  Furthermore, by deforming the notch according to the degree of curvature, it becomes easier to follow the masking sheet along the curved surface, making it possible to increase the size per sheet and reduce the number of sheets to be stacked. , Masking workability can be improved.

  In addition, according to the golf club manufacturing method of the present invention, the golf club head is coated by masking with the masking method, which is excellent in workability and can greatly reduce the occurrence of masking defects. Thus, a high-quality golf club can be manufactured with high productivity.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1A, 1B, 2A, and 2B show masking sheets 10a, 10b, 11a, and 11b used in a golf club head masking method according to an embodiment of the present invention. Of these masking sheets 10a, 10b, 11a, 11b, 10a and 11a, or 10a and 11b, or 10b and 11a, that is, using one or two masking sheets having notches, Masking is performed with a curved surface region indicated by a portion surrounded by a thick line in the golf club head 12 shown in FIG. The masking range 13 is one region formed by connecting the sole portion 12a to the face portion 12b, and the thick lines (13a-13b-13c-13d-13e-13f-13g-13a) are the edges of the masking range (hereinafter referred to as the following). It is called a masking edge.)

  The masking sheets 10a and 10b are masking sheets on the sole side that form part of the masking edge of the sole portion 12a (13a-13b-13c), and the masking sheets 11a and 11b are one of the masking edges of the sole portion 12a. This is a face side masking sheet for forming masking end edges (13c-13d-13e-13f-13g-13a) of the face portion and the face portion 12b.

  The peripheral edge of the masking sheet 10a on the sole side is composed of a masking end forming portion 14 (portion forming the masking end edges 13a-13b-13c) and an overlapping portion 15, and the overlapping portion 15 is formed at an interval. Five V-shaped notches 16 are provided. The notch depth of the notch 16 is about 10 to 30 mm. In the present embodiment, the notch 16 is V-shaped, but may be a slit-like notch as shown in FIG.

  The masking sheets 10a and 10b are made of a vinyl chloride resin sheet having an adhesive layer on the back surface, and have a thickness of 0.115 mm to 0.14 mm. In this embodiment, a 0.12 mm thick vinyl chloride masking tape (“322G”, manufactured by Teraoka Seisakusho) is used.

  On the other hand, the peripheral edge of the masking sheet 11a on the face side is composed of a masking end forming portion 17 (portion forming the masking end edges 13c-13d-13e-13f-13g-13a) and an overlapping portion 18, and an overlapping portion. 18 is provided with five V-shaped notches 19 similar to the masking sheet 10a.

The face side masking sheets 11a and 11b are made of a polyolefin resin sheet provided with an adhesive layer on the back surface, and are thinner than the masking sheets 10a and 10b on the sole side in order to reduce the coating step at the masking end on the face side. The thickness is 0.11 mm to 0.13 mm. In this embodiment, a polyolefin masking tape (“# 2756L”, manufactured by 3M Company) having a thickness of 0.115 mm is used.
The value of the thickness of the masking sheets 11a and 11b on the face side / the thickness of the masking sheets 10a and 10b on the sole side is 0.90 to 0.96 (0.96 in this embodiment).

  Hereinafter, the attachment of the masking sheets 10a and 11a to the masking range 13 will be described. First, the masking end forming portion 14 of the masking sheet 10a is arranged without a gap along the masking end edges 13a-13b-13c of the masking range 13, and the notch 16 is deformed according to the curved surface to bend the masking sheet 10a. Paste it along the surface.

  Next, the masking edge forming portion 17 of the masking sheet 11a is arranged without a gap along the masking edge 13c-13d-13e-13f-13g-13a of the masking range 13, and the notch 19 is deformed according to the curved surface. By doing so, the masking sheet 11a is stuck along the curved surface. At this time, as shown in FIG. 4, the overlapping portion 18 of the masking sheet 11a is overlapped with the masking sheet 10a so as not to generate a gap due to the notches 16 and 19, and the masking ends of the two masking sheets 10a and 11a are overlapped. The formation portions 14 and 17 are continuously arranged without gaps along the entire edge of the masking range 13.

  After masking the masking range 13 as described above, blasting (sand blasting) is performed, and then coating including an undercoating, intermediate coating (coloring), and topcoating (clearing) process is performed. Thereby, it is possible to apply the coating only to the portions that are not masked.

  As described above, the peripheral edges of the two masking sheets 10a and 11a are covered with the masking end forming portions 14 and 17 that form the edges of the masking range 13, and the overlapping portions 15 and 18 that are overlapped with other masking sheets. Since the notches 16 and 19 are provided in the overlapping portions 15 and 18, the overlapping portions 15 and 18 are aligned with the edge of the masking range 13 without gaps. By deforming the notches 16 and 19 in accordance with the curved surface, the masking sheets 10a and 11a can be fitted along the curved surface.

  Further, as described above, the masking end forming portions 14 and 17 of the two masking sheets 10a and 11a continuously form the entire periphery of the edge of the masking range 13 with no gaps, and have the notches 16 and 19 overlapped. Since the mating portions 15 and 18 are also overlapped with the overlapping portions of other masking sheets so as not to generate a gap, the entire masking range 13 can be reliably masked, and masking failure that causes poor coating or blast failure. Can be greatly reduced.

In addition, according to the above configuration, the notches 16 and 19 can be deformed in accordance with the degree of bending so that the masking sheets 10a and 11a can be easily along the curved surface. Can be increased, the number of sheets to be superimposed can be reduced, and the masking workability can be improved.
Therefore, by coating the golf club head using the masking method having the above-described configuration, it is possible to suppress a blast failure and a coating failure and to manufacture a high-quality golf club with high productivity.
In the case where the masking sheets 10a and 11b and the masking sheets 10b and 11a are used, the masking can be performed satisfactorily and the same effect can be obtained.

It is the schematic of the masking sheet of the sole side used for the masking method of the golf club head of this embodiment. It is the schematic of the masking sheet of the face side used for the masking method of the golf club head of this embodiment. 1 is a schematic perspective view of a golf club head to be masked. It is a schematic perspective view of the state which affixed the masking sheet on the masking range of the golf club head. It is a figure which shows another example of a notch. It is drawing which shows a prior art example.

Explanation of symbols

10a, 10b Masking sheet 11a on the sole side, 11b Masking sheet 12 on the face side Golf club head 12a Sole part 12b Face part 13 Masking range 14, 17 Masking end forming part 15, 18 Overlapping part 16, 19 Notch

Claims (4)

A masking method for painting a golf club head in a golf club manufacturing process,
Providing a plurality of masking sheets to be attached to a masking range consisting of a combined area of curved surfaces of the golf club head;
The peripheral edge of at least one masking sheet is composed of a masking edge forming portion that forms an edge of the masking range and an overlapping portion that is overlapped with another masking sheet. Provide a notch that can be fitted along the curved surface while deforming,
While each masking edge forming portion of the plurality of masking sheets is continuously disposed along the entire edge of the masking range,
A masking method for a golf club head, comprising masking an overlapping portion of the peripheral edge of the masking sheet so as not to generate a gap due to the notch with another masking sheet.   The masking sheet used for masking one masking range is 2 to 5 sheets, and the notch provided in the masking sheet is a V-shaped notch formed at intervals along the edge of the overlapped portion. 2. The golf club head masking method according to claim 1, comprising a slit-shaped notch.   The said masking sheet consists of a resin sheet which consists of a vinyl chloride resin or polyolefin resin, and provided the adhesion layer in the back surface, The thickness of this masking sheet is 0.08 mm-0.18 mm. Golf club head masking method.   A golf club manufacturing method comprising the step of masking with the golf club head masking method according to any one of claims 1 to 3 and coating the golf club head.

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