JP2007075173A - Plasma welding method for golf club head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plasm welding method for a golf club head which can achieve a production process of fully automated welding and furthermore, achieves a higher efficiency of the production process and a higher quality of the welding. <P>SOLUTION: The method comprises the step of fitting a face plate into a head body to connect, the step of getting a welding torch inclined at an angle of inclination facing one of the head body and the face plate in a vertical direction made on it and the step of making a connection by the plasm welding on the connection interface of at least one of the head body and the face plate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for plasma welding of a golf club head, and in particular, plasma for plasma welding with respect to a specific zone of a joint boundary line between a head body and a face plate by inclining a welding torch at a certain inclination angle. It relates to the welding method.

11 and 12, a conventional golf club head plasma welding method includes a head main body 91 and a face plate 92, and tungsten is selectively formed at a joint boundary line 93 between the head main body 91 and the face plate 92. Some types of welding are performed using welding methods such as inert gas arc welding, hard brazing, laser beam welding, and plasma welding (see, for example, Patent Documents 1, 2, 3, and 4). .
Republic of China Notification No. 585792 Republic of China No. I225421 Republic of China No. I226251 US 6,099,414 Publication

  In the conventional method of plasma welding of a golf club head as described above, when the bonding is selectively performed using the plasma welding method, it is sure to provide relatively good energy concentration or heat influence. The zone can be effectively kept low, the precision of welding can be increased, the welding speed and quality can be improved, but when plasma welding is actually performed, the welding torch 94 is normally movable. By attaching to a guide rail (not shown) in this manner, the head body 91 and the face plate 92 are moved to a position adjacent to the joint boundary line 93 and automatically welded to the joint boundary line 93. A manufacturing process can be performed. In effect, a neck portion 911 is formed in the head body 91, and the neck portion 911 is formed so as to be interposed between the head body 91 and the hosel 912. The hosel 912 is opposed to the face plate 92 of the head body 91. It is formed to be inclined so as to protrude and extend upward. For this reason, when the welding torch 94 is to be joined by welding to the joint boundary line 93 near the neck portion 911, the welding torch 94 and the neck portion 911 interfere with each other so that the welding torch 94 is connected to the joint boundary line 93. Since 93 cannot be moved to above the zone approaching the neck 911, there is a problem that welding cannot be performed. As described above, the conventional method of plasma welding of the golf club head described above is to perform automatic welding at a position away from the neck portion 911 with respect to the bond boundary line 93 by plasma welding. Then, using welding methods such as conventional tungsten inert gas arc welding, manual welding is performed on the bond boundary line 93 approaching the neck 911, thereby greatly limiting the realization of full automation of the manufacturing process. There was a problem of end. In addition, in some areas close to the joint boundary line 93 of the neck portion 911, the quality of the welding is lowered, the deformation amount of the welding member is increased, and the efficiency of the manufacturing process is further deteriorated. was there. Therefore, it is necessary to further improve the conventional plasma welding method of the golf club head as described above.

  The present invention has been invented in view of such problems, and its object is to incline the welding torch at an inclination angle relative to the vertical direction of the face plate so that the head body and the face plate are By performing plasma welding on the bonding site close to the neck, it is possible to reliably realize a fully automated welding manufacturing process, and further improve the efficiency of the manufacturing process and the quality of the welding of the golf club head. Is to provide a method.

  The first object of the present invention is to realize a fully automated welding manufacturing process by inclining the welding torch at a certain inclination angle relative to the head body or the face plate and performing plasma welding on the face plate. An object of the present invention is to provide a method for plasma welding a golf club head.

  The second object of the present invention is that an opening groove is formed at a joint portion where the head body and the face plate are close to the neck, and the welding torch is inclined at a certain inclination angle, and plasma welding is performed on the opening groove portion. By doing so, it is an object of the present invention to provide a method for plasma welding of a golf club head that can increase the penetration depth of the weld and the reliability of the bond.

In order to achieve the above object, the method of plasma welding a golf club head according to the present invention is as follows. That is,
The face plate is fitted between the toe portion, the sword portion, the neck portion, and the sole portion of the head main body and coupled, and the hosel is provided so as to protrude and extend upward from the neck portion on one side of the front surface of the head main body. And a step of inclining the welding torch of the automatic welding machine to an inclination angle relative to a vertical direction formed on one of the head body and the face plate, and the head body and the face plate using the welding torch. And bonding by plasma welding to at least one bond boundary line.

  According to the method of plasma welding of a golf club head according to the present invention, the welding torch is plasma welded to the joint boundary line where the head body and the face plate are close to the neck by tilting the welding torch at a certain inclination angle. You can also. Further, the outer peripheral edge of the face plate is formed with a cut surface at least near the neck portion of the head main body, and the cut surface and the opening of the head main body can jointly form an opening groove. In addition, a contact surface can be formed on the outer peripheral portion of the face plate other than the cut surface. Further, the outer peripheral edge of the face plate is formed with a first cross section at least at a portion close to the neck of the head body, and a second cut surface corresponding to the first cross section is formed at the opening of the head body. Any cross section and the second cut surface can also form an opening groove jointly. Further, the face plate can be brought into contact with the inner peripheral edge of the opening of the head body by forming a contact surface at the bottom edge of the first cross section. Further, at least one filler flange may be provided on the periphery of the opening of the head body so as to protrude.

  According to another aspect of the present invention, there is provided a method for plasma welding of a golf club head comprising: a step of fitting and coupling a first head member to a second head member; and a welding torch of an automatic welding machine comprising the first head member and the second head. Inclining at an inclination angle relative to the vertical direction of at least one bond boundary of the member, and using plasma welding to bond the bond boundary using a welding torch.

  Further, in the method of plasma welding a golf club head according to the present invention, the first head member can be selected from a face plate, a cover plate, a side plate, a bottom plate, a back plate, a weight, or a hosel. The second head member can also be selected from the head body. In addition, the welding torch is inclined at a certain inclination angle, so that the first head member and the second head member can perform plasma welding on the coupling boundary line approaching the interference site. Further, the outer peripheral edge of the first head member may have a cut surface at least at a portion close to the interference portion, and the cut surface and the opening of the second head member may jointly form an opening groove. In the first head member, a contact surface may be formed on the outer peripheral edge other than the cut surface. In addition, the outer periphery of the first head member is formed with a first cross section at least at a portion close to the interference portion, and a second cut surface corresponding to the first cross section is formed at the opening of the second head member. The first cross section and the second cut surface may be formed together to form an opening groove. In the first head member, a contact surface may be formed on the outer peripheral edge other than the cut surface. Further, the range of the inclination angle of the welding torch may be formed to be between 8 ° and 75 °. Further, the plasma welding current export method can be selected from pulse current or continuous current.

  According to the method of plasma welding of a golf club head of the present invention, the welding torch is inclined at a certain inclination angle relative to the head main body or the face plate, and plasma welding is performed on the face plate, thereby performing fully automatic welding. The manufacturing process can be realized.

  According to the method of plasma welding of a golf club head of the present invention, an opening groove is formed at a joint portion where the head body and the face plate are close to the neck portion, and the welding torch is further inclined to a certain inclination angle. By performing plasma welding on the surface, there is an advantage that the depth of penetration of welding and the reliability of bonding can be increased.

  Embodiments of the present invention will be described below with reference to the drawings.

  Referring to FIGS. 1, 2, and 3, in the first step in the plasma welding method of the golf club head according to the first embodiment of the present invention, the face plate 2 is fitted and joined to the head body 1. The head body 1 can be selected from various conventional head structures such as an iron type, a wood type, a utility type or a putter type. In the present invention, since an iron type head is taken as an example, the application of the same embodiment in other types will not be described in detail again.

  1, 2, and 3 again, the head body 1 according to the first embodiment of the present invention is provided with an opening 10 (see FIG. 3), a hosel 11, and a neck 12. The opening 10 is provided in front of the head body 1, and the face plate 2 can be accommodated in the opening 10. Since the hosel 11 is formed so as to be positioned on one side of the head body 1, it can be coupled to a shaft (not shown). The neck portion 12 is formed so as to be positioned inside the bent portion of the boundary between the head body 1 and the hosel 11, and the hosel 11 is opposed to the front surface of the head body 1 (that is, the face plate 2) and one side of the neck portion 12. And inclined so as to protrude and extend upward. The face plate 2 is fitted between a toe portion (not shown), a sword portion (not shown), a neck portion 12 and a sole portion (not shown) of the head body 1, and the head body 1 and the face plate 2. By forming a bond boundary line a between the two, welding can be performed in the subsequent manufacturing process.

Referring to FIGS. 1, 2 and 3 again, in the second step of the plasma welding method of the golf club head according to the first embodiment of the present invention, the welding torch 3 is moved relative to the direction perpendicular to the head body 1 or the face plate 2. and Aru is inclined in the inclination angle theta ₁ with. The welding torch 3 comprises a welding torch of a plasma automatic welding machine (not shown). The welding torch 3 for plasma welding is normally attached to a guide rail (not shown) in a freely movable manner so that it moves downward until it is adjacent to the joint boundary a of the head body 1 and the face plate 2 and is coupled. An automatic plasma welding manufacturing process can be performed on the boundary line a. In order to avoid interference caused by movement of the welding torch 3 with respect to the neck 12 of the head main body 1 during movement, the welding torch 3 is perpendicular to the head main body 1 or the face plate 2 (that is, the direction of the normal line or the direction of the hit ball). By tilting at an inclination angle θ ₁ relative to the direction), there is at least one suitable spacing (not shown) between the outlet end (not shown) of the welding torch 3 and the neck 12 of the head body 1. Since it is formed, the welding torch 3 can smoothly weld the portion where the joint boundary a approaches the neck 12. The angle range of the inclination angle θ ₁ is preferably formed so as to be interposed between 8 ° and 75 °, and in particular, formed so as to be interposed between 30 ° and 45 °. In the present invention, one of the head main body 1 or the welding torch 3 is employed, and the inclination angle θ ₁ is set between the welding torch 3 and the head main body 1 by using an appropriate means for inclination. Can be achieved.

  Referring again to FIGS. 1, 2, and 3, in the third stage of the plasma welding method of the golf club head according to the first embodiment of the present invention, the joining boundary between the head body 1 and the face plate 2 is utilized using the welding torch 3. Bonding by plasma welding is performed on at least one bonding site of line a. When the welding torch 3 is welded to a portion far from the neck 12 of the joint boundary line a, the welding torch 3 is vertically set using the conventional plasma welding method (that is, the vertical direction of the face plate 2). And then using the parameters of the conventional plasma welding method. However, if the welding torch 3 is to be welded to the portion of the joint boundary line a that is close to the neck 12, the welding torch 3 is tilted according to the second stage of the present invention, and then the plasma welding method is used. Set the parameters as follows. a) The range of the flow rate of the plasma gas is preferably set so as to be interposed between 1.50 LPM and 0.15 LPM (Liter Per Minute, 1 / m), and particularly set to 0.30 LPM. b) The peak current is preferably set to be between 120A and 55A, in particular 68A. c) The basic current is preferably set to be between 70A and 22A, in particular 31A. d) The method of current export selectively uses pulsed current or continuous current. e) The welding speed is preferably set to be between 5 cm / min and 45 cm / min, particularly 18 cm / min. As a result, the welding torch 3 can be plasma-welded to the portion of the joint boundary line a close to the neck 12 and at the same time has a sufficient welding penetration depth and welding quality. The manufacturing process of automated plasma welding can be realized. In addition, in the present invention, plasma welding can be performed using a keyhole welding method or a non-keyhole welding method.

4, 5 and 6, a method of plasma welding a golf club head according to a second embodiment of the present invention is posted. When compared with the first embodiment, a cut surface 21 (see FIGS. 5 and 6) is formed in advance on the outer peripheral edge of the face plate 2 of the second embodiment. The cut surface 21 is formed in a specific partial area of the outer peripheral edge of the face plate 2, that is, formed in a portion close to the neck 12 of the head body 1, and the cut surface 21 is formed on one side of the head body 1. It is formed on the outer peripheral edge far from the center. The cut surface 21 and the opening 10 of the head body 1 jointly form an opening groove b. A cutting angle θ ₂ (see FIGS. 4 and 6) is formed in the opening groove b, and the range of the cutting angle θ ₂ is preferably formed so as to be interposed between 10 ° and 45 °, particularly 30 °. Formed. In the face plate 2, a contact surface 22 is formed on the outer peripheral portion other than the cut surface 21, and the contact surface 22 is formed so as to approach the back surface of the face plate 2 (that is, one side close to the head body 1). Further, it can abut against the inner peripheral edge (see FIGS. 7 and 8) of the opening 10 of the head body 1, and the thickness range of the abutting surface 22 is preferably 10% to 50% of the thickness of the face plate 2. %, And in particular, 20%. Thereby, the penetration depth at the time of plasma welding can be further increased by the opening groove b, and the reliability of the coupling can be enhanced. Further, before plasma welding, it is preferable that the front surface of the head main body 1 and the face plate 2 are provided with an appropriate degree of processing freedom in advance. In this way, after plasma welding is performed, even if a minute dent is generated at the bonding site by welding, it can be easily modified by surface polishing processing, so a final head finished product is produced. be able to.

Referring to FIGS. 7, 8, and 9, a method of plasma welding a golf club head according to a third embodiment of the present invention is posted. When compared with the first and second embodiments, in the third embodiment, the cut surface 13 is formed so that the inner peripheral edge of the opening 10 of the head body 1 and the outer peripheral edge of the face plate 2 correspond to the portions close to the neck 12, respectively. And a cut surface 21 'is formed. Further, the cut surface 13 and the cut surface 21 'jointly form an opening groove c. A cutting angle θ ₃ (see FIGS. 7 and 9) is formed in the opening groove c, and the angle range of the cutting angle θ ₃ is preferably formed to be between 20 ° and 90 °, particularly 60 °. Formed. In the face plate 2, a contact surface 22 ′ is formed on the outer peripheral portion other than the cut surface 21 ′, and the contact surface 22 ′ is formed so as to approach the back surface of the face plate 2 (that is, one side close to the head body 1). In addition, it can be brought into contact with the inner peripheral edge (see FIGS. 8 and 9) of the opening 10 of the head body 1, and the thickness range of the contact surface 22 ′ is preferably the thickness of the face plate 2. It is formed so as to be interposed between 10% and 50%, particularly 20%. Thereby, the penetration depth at the time of plasma welding can be further increased by the opening groove c, and the reliability of coupling can be increased. Further, before plasma welding, it is preferable that the front surface of the head main body 1 and the face plate 2 are provided with an appropriate degree of processing freedom in advance. In this way, after plasma welding is performed, even if a minute dent is generated at the bonding site by welding, it can be easily modified by surface polishing processing, so a final head finished product is produced. be able to.

  Referring to FIG. 10, a method of plasma welding a golf club head according to a fourth embodiment of the present invention is posted. As compared with the first, second, and third embodiments, in the fourth embodiment, at least one filler flange 14 is provided on the periphery of the opening 10 of the head body 1 so as to protrude. Further, at least one filler groove 23 is provided around the peripheral edge of the front surface of the face plate 2 so as to correspond thereto. When assembling for the first time, the face plate 2 is first inserted into the opening 10 of the head main body 1 so that the filler flange 14 can be used as a filler during plasma welding.

  Referring to FIGS. 1 to 10, the method of plasma welding of a golf club head according to the first to fourth embodiments of the present invention can be selectively applied to a site where any interference occurs from the welding torch 3, for example, A joint part between the cover plate (not shown) and the head body 1, a joint part between the side plate (not shown) and the head body 1, a joint part between the bottom plate (not shown) and the head body 1, and a back plate (figure (Not shown) and the head body 1, a weight (not shown) and the head body 1, or the hosel 11 and the head body 1. In addition, in the method of plasma welding of the golf club head in the second and third embodiments of the present invention, the filler (not shown) is selectively placed inside the opening groove b or the opening groove c (FIGS. 4 to 9). Can be filled).

  As described above, according to the plasma welding method of the conventional golf club head shown in FIGS. 11 and 12, the bonding boundary line 93 is automated for the part far from the neck 911 by using the plasma welding method. The efficiency and quality of the manufacturing process are deteriorated by performing manual welding on the part where the joining boundary line 93 approaches the neck 911 using a conventional welding method such as tungsten inert gas arc welding. However, according to the method of plasma welding of the golf club head of the present invention shown in FIG. 1, the welding torch 3 is selectively set up vertically or tilted to be coupled to each other. Since plasma welding is performed on a part where the boundary line a is far from or close to the neck 12, a fully automated plasma welding manufacturing process is reliably realized. Preparative it is, it is possible to relatively increase the quality of the welding and the efficiency of the manufacturing process. In addition, by forming the opening grooves b and c between the head body 1 and the face plate 2, it is possible to reliably increase the penetration depth of welding and the reliability of coupling.

  The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

It is a block diagram which shows the manufacturing process by the method of plasma welding of the golf club head of the Example of this invention. It is a perspective view of the golf club head by the method of plasma welding of the golf club head of Example 1 of this invention. It is sectional drawing of the golf club head by the method of plasma welding of the golf club head of Example 1 of this invention. It is a perspective view of the golf club head by the method of plasma welding of the golf club head of Example 2 of this invention. It is sectional drawing of the golf club head by the method of the plasma welding of the golf club head of Example 2 of this invention. It is a one part enlarged view of the golf club head by the method of plasma welding of the golf club head of Example 2 of this invention. It is a perspective view of the golf club head by the method of plasma welding of the golf club head of Example 3 of this invention. It is sectional drawing of the golf club head by the method of the plasma welding of the golf club head of Example 3 of this invention. It is a one part enlarged view of the golf club head by the method of plasma welding of the golf club head of Example 3 of this invention. It is sectional drawing of the golf club head by the method of the plasma welding of the golf club head of Example 4 of this invention. It is a perspective view of the golf club head by the plasma welding method of the conventional golf club head. It is sectional drawing of the golf club head by the method of the plasma welding of the conventional golf club head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head main body 10 Opening part 11 Hosel 12 Neck part 13 Cutting surface 14 Filling material flange 2 Face board 21 Cutting surface 21 'Cutting surface 22 Abutting surface 22' Abutting surface 23 Filling material groove 3 Welding torch a Bonding boundary line b Opening Groove c Open groove θ ₁ Tilt angle θ ₂ Cut angle θ ₃ Cut angle

Claims (17)

a) The face plate (2) is fitted and coupled between the toe portion, the sword portion, the neck portion (12) and the sole portion of the head body (1), and the hosel (11) is connected to the head body (1). A step of projecting upward and extending from the neck (12) on one side of the front;
b) Inclining the welding torch (3) of the automatic welding machine to an inclination angle (θ ₁ ) relative to the vertical direction formed in one of the head body (1) and the face plate (2). When,
c) using plasma welding to couple at least one coupling boundary line (a) between the head body (1) and the face plate (2) using the welding torch (3);
A method of plasma welding a golf club head comprising: When the welding torch (3) is inclined at a certain inclination angle (θ ₁ ), the welding torch (3) is connected to the boundary line (a) where the head body (1) and the face plate (2) approach the neck (12). 2. The method of plasma welding of a golf club head according to claim 1, wherein plasma welding is performed on the golf club head.   A cut surface (21) is formed on the outer peripheral edge of the face plate (2) at least at a site close to the neck (12) of the head body (1), and the opening (10) of the cut surface (21) and the head body (1) is formed. The method for plasma welding of a golf club head according to claim 1, characterized in that the opening groove (b) is jointly formed.   4. The method of plasma welding of a golf club head according to claim 3, wherein a contact surface (22) is formed on an outer peripheral edge of the face plate (2) other than the cut surface (21).   The outer peripheral edge of the face plate (2) has a first cross section (21 ′) at least at a portion close to the neck (12) of the head main body (1), and further to the opening (10) of the head main body (1). Is formed with a second cut surface (13) corresponding to the first cross section (21 '), and the first cross section (21') and the second cut surface (13) together form an opening groove (c). 2. A method of plasma welding a golf club head according to claim 1, wherein:   The face plate (2) is in contact with the inner peripheral edge of the opening (10) of the head body (1) by forming a contact surface (22 ') at the bottom edge of the first cross section (21'). 6. The method of plasma welding of a golf club head according to claim 5, wherein:   6. The plasma welding of a golf club head according to claim 3, wherein at least one filler flange (14) is provided so as to protrude from the periphery of the opening (10) of the head body (1). Method. a) fitting and coupling the first head member to the second head member;
b) Inclining the welding torch (3) of the automatic welding machine to an inclination angle (θ ₁ ) relative to the vertical direction of at least one connecting boundary line (a) of the first head member and the second head member. When,
c) using plasma welding to bond boundary line (a) using welding torch (3);
A method of plasma welding a golf club head comprising:   9. The method of plasma welding of a golf club head according to claim 8, wherein the first head member is selected from a face plate (2), a cover plate, a side plate, a bottom plate, a back plate, a weight or a hosel.   9. The method of plasma welding of a golf club head according to claim 8, wherein the second head member is selected from a head body (1). When the welding torch (3) is inclined at a certain inclination angle (θ ₁ ), the first head member and the second head member perform plasma welding on the coupling boundary line (a) approaching the interference site. 9. The method of plasma welding a golf club head according to claim 8, wherein   The outer peripheral edge of the first head member is formed with a cut surface (21) at least at a portion close to the interference portion, and the cut surface (21) and the opening (10) of the second head member jointly form an opening groove (b 9. A method of plasma welding a golf club head according to claim 8, wherein:   The method of plasma welding of a golf club head according to claim 12, wherein a contact surface (22) is formed on an outer peripheral edge portion of the first head member other than the cut surface (21).   The outer peripheral edge of the first head member has a first cross section (21 ′) at least at a portion close to the interference portion, and the opening (10) of the second head member has a first cross section (21 ′). 9), a second cut surface (13) is formed, and the first cross section (21 ') and the second cut surface (13) jointly form an opening groove (c). A method of plasma welding of the described golf club head.   The golf club head plasma welding method according to claim 14, wherein a contact surface (22) is formed on a portion of the outer peripheral edge other than the cut surface (21) in the first head member. 9. The golf club head plasma welding according to claim 1, wherein the angle range of the inclination angle ([theta] ₁ ) of the welding torch (3) is formed to be between 8 [deg.] And 75 [deg.]. the method of.   9. The method of plasma welding of a golf club head according to claim 1, wherein the method of exporting the current of plasma welding is selected from pulse current or continuous current.

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