JP6210834B2 - Joining assembly apparatus and joining assembly pipe assembling method - Google Patents

Description

  The present invention relates to a joining assembly apparatus and a joining assembly pipe assembling method for assembling a joining assembly pipe constituting a fuel supply pipe for introducing fuel to a fuel tank.

  2. Description of the Related Art Conventionally, a fuel having a fuel supply pipe main body with one end connected to a fuel tank, and a short cylindrical retainer with one end connected to the other end of the fuel supply pipe main body and the other end constituting a fuel supply port. An oil supply pipe is known, and the oil supply pipe main body and the retainer are generally polymerized by fitting one end side of the retainer into the other end side of the oil supply pipe main body, and welding the overlap portion by welding. It is assembled by forming an annular joint.

  By the way, when the plating layer is formed in the outer peripheral surface of a retainer, if a retainer is internally fitted by the oil supply pipe main body, a plating layer will intervene in the superposition | polymerization part. Then, at the time of solidification of the melted part in welding, the plating layer evaporates, so that a recessed part or a blow hole is formed in the annular joint part, and the strength of the annular joint part may be lowered by the recessed part or the blow hole. is there.

  In order to avoid this, it is conceivable to remove in advance the plating layer interposed in the overlapping portion of the oil supply pipe body and the retainer before forming the annular joint. For example, in Patent Document 1, when two galvanized steel plates are overlapped and a joining portion by laser light is formed on the overlapped portion, laser light having a low energy density is previously applied to the portion where the joining portion is formed. Irradiation from the plate thickness direction is performed to evaporate and remove only the plating layer interposed in the overlapped portion without melting the two steel plates by the heat of the laser beam.

JP 2010-94701 A

  However, when the laser beam is irradiated from the thickness direction to the overlapped part of the steel plates as in Patent Document 1 to evaporate the plating layer interposed in the overlapped part, a large amount of heat of the laser light is applied to both the steel plates. Due to this, deformation due to thermal strain occurs in both steel sheets. If both steel sheets are deformed due to thermal strain, there is a risk that the accuracy of parts after manufacture will deteriorate, or that there will be a large gap between the two steel sheets, resulting in drilling of the joint due to the gap. is there. In order to avoid these component accuracy defects and bonding defects, it may be possible to correct both steel sheets deformed by thermal strain with a jig and irradiate laser light, but instead of bonding two steel sheets, When a metal cylinder member is fitted and an annular joint is formed in the overlapped part and assembled, the jig structure becomes complicated if an attempt is made to correct the deformation due to thermal strain generated in both cylinder members. This may increase costs.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a joint assembly apparatus and an assembly method for a joint assembly pipe that suppresses the occurrence of component accuracy defects and joint defects and is inexpensive. Is to provide.

  In order to achieve the above object, the present invention is characterized in that, in the step of assembling the joint assembly tube, the method of removing the plating layer by the heat of the laser beam has been devised.

  Specifically, a rotating means having a rotating shaft, a laser welding machine capable of continuously irradiating laser light, and a rotating operation of the rotating shaft and an irradiation operation of the laser light connected to the rotating means and the laser welding machine. And a control means for controlling the first cylindrical member having a storage portion for storing the first output value for welding and having a plating layer at least on the outer peripheral surface. The rotating means and the laser welding machine are controlled in a state where the assembled temporary assembled tube is set on the rotating shaft, and the overlapping portion of the temporary assembled tube is rotated while the temporary assembled tube is rotated one or more times. An annular joint portion is formed by continuously irradiating a laser beam at the first output value to a portion where two cylindrical member end portions and the outer peripheral surface of the first cylindrical member intersect to form a joined assembly tube. In the joining assembly equipment It took the resolution means.

That is, in the first invention, the storage unit stores a second output value that is lower than the first output value, and the control means includes the first cylinder member or the temporary assembly pipe. The first cylinder in which the annular joint is formed while the rotating means and the laser welding machine are controlled in a state where is set on the rotating shaft and the first cylinder member or the temporary assembly pipe is rotated one or more times. being configured to be evaporated a plating layer to form a base material剥出of the annular by continuously irradiating a laser beam in advance the second output value to a region of member outer peripheral surface, the base material The region of the outer peripheral surface of the first cylinder member to which the laser beam having the second output value is irradiated when forming the peeled portion is the region of the outer peripheral surface of the first cylinder member where the annular joint portion is formed. What is the second cylindrical member with respect to the overlapping portion of the temporary assembly pipe? Characterized in that it is a neighboring region adjacent to the contralateral.

  According to a second invention, in the first invention, when the base material stripping portion is formed on the outer peripheral surface of the first cylindrical member, the focal position of the laser light emitted from the laser welding machine is shifted to a predetermined amount. A focus position changing unit for focusing is provided.

  Further, the present invention provides the first cylindrical member outer peripheral surface and the second cylinder of the overlapping portion of the temporary assembly pipe assembled by fitting the first cylindrical member having a plating layer on at least the outer peripheral surface into the second cylindrical member. Also intended for a method of assembling a joint assembly pipe for forming a joint joint pipe for a fuel supply pipe by forming a ring joint by continuously irradiating a laser beam at a first output value to a portion where the member end intersects, The following solutions were taken.

That is, in the third aspect of the invention, the first cylindrical member or the temporary assembly tube is rotated at least once or more with respect to the region of the outer peripheral surface of the first cylindrical member where the annular joint portion is formed in advance. Including a base material stripping portion forming step of evaporating the plating layer by continuously irradiating a laser beam with a second output value lower than one output value to form an annular base material stripping portion; In the base material extruding portion forming step, the region of the outer peripheral surface of the first cylinder member that is irradiated with the laser beam at the second output value is an area of the outer peripheral surface of the first cylinder member where the annular joint portion is formed. The region is an adjacent region adjacent to the side opposite to the second cylindrical member with respect to the overlapping portion of the temporary assembly pipe .

  In the first and third inventions, the base material stripping portion of the first cylinder member from which the plating layer has been removed and the end of the second cylinder member are melted to form an annular joint portion. Defects caused by plating layers such as depressions and blowholes are unlikely to occur, and a sound joint can be formed. Further, when removing the plating layer of the temporary assembly pipe corresponding to the joint location, the laser beam is irradiated only on the outer peripheral surface of the first cylinder member, so deformation due to thermal distortion during the removal of the plating layer is mainly used for the first cylinder member. Compared to the case where deformation due to thermal strain occurs in the two members when the plating layer is removed as in Patent Document 1, the accuracy of the parts after manufacture is improved, and both cylinders even if thermal strain occurs. It is possible to suppress the occurrence of drilling by reducing the gap generated in the overlapping part of the member, and there is no need for a correction jig to correct the deformation caused by thermal distortion when joining both cylindrical members. The equipment cost can be kept low.

  In the second invention, the width of the base material stripping portion is widened by expanding the laser beam irradiation range with respect to the outer peripheral surface of the first cylindrical member. Therefore, even if the laser beam irradiation position varies during bonding, It is possible to prevent the irradiation position of the light from protruding from the base material stripping portion and to surely prevent a defect in the joint portion caused by evaporation of the plating layer. Further, since the laser beam is irradiated in a defocused state, the energy density applied to the outer peripheral surface of the first cylinder member when removing the plating layer is further smaller than that of the first invention, and the heat generated in the first cylinder member Deformation due to distortion can be further suppressed.

1 is a perspective view of a fuel supply pipe having a joint assembly pipe assembled by a joint assembly apparatus according to an embodiment of the present invention, a fuel tank to which the fuel supply pipe is connected, and a fuel supply cap that covers a fuel supply port. It is a schematic block diagram of the joining assembly apparatus which concerns on embodiment of this invention. FIG. 2 is a cross-sectional equivalent view taken along the line AA in FIG. It is a cross-sectional equivalent view in the AA line of FIG. 1, and shows the state immediately after removing the plating layer of a part of retainer outer peripheral surface with a laser beam. It is a cross-sectional equivalent view in the AA line of FIG. 1, and shows the state just before performing laser welding. It is a cross-sectional equivalent view in the AA line of FIG. 1, and shows the state immediately after starting laser welding. It is a cross-sectional equivalent view in the AA line of FIG. 1, and shows the state immediately after complete | finishing laser welding.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.

  FIG. 1 shows a fuel supply pipe 1 according to an embodiment of the present invention. The fuel refueling pipe 1 serves as a passage when fuel is supplied to a fuel tank 11 of a vehicle, and is a substantially circular cylinder having one end connected to the fuel tank 11 and the other end enlarged in diameter. An oil supply pipe main body 2 (second cylinder member) and a substantially circular short cylindrical retainer 3 (first cylinder member) connected to a diameter-enlarged portion of the oil supply pipe main body 2, and the oil supply pipe main body 2. By joining the retainer 3 and the retainer 3 together, the joint assembly pipe 1b is assembled.

  As shown in FIGS. 3 to 7, plating layers 2 a are respectively formed on the outer peripheral surface and the inner peripheral surface of the oil supply pipe body 2. Specifically, the oil supply pipe body 2 is formed by forming a plated layer 2a made of nickel zinc plating or hot dip galvanization on the outer peripheral surface and inner peripheral surface of a steel pipe having a thickness of about 0.8 to 1.0 mm. It is.

  The steel pipe of the fuel supply pipe body 2 can be made of a material equivalent to STKM11A or STKM12A according to the JIS standard, when the fuel supply pipe 1 to be manufactured does not require high outer surface rust prevention performance. For example, a plated steel pipe manufactured by Maruichi Steel Pipe Co., Ltd. in which a hot-dip galvanized layer is formed on the outer peripheral surface and the inner peripheral surface of a steel pipe equivalent to STKM11A can be applied. Moreover, when the steel pipe of the said fuel supply pipe body 2 requires high outer surface rust prevention performance with respect to the fuel supply pipe 1 to be manufactured, JIS standard SUS429, SUS430, SUS430LX, SUS430J1L, SUS403LX, SUS434, SUS436L, SUS436J1L SUS443J1 and SUS444 equivalent materials can be applied. For example, Nisshin Steel Co., Ltd. has a nickel zinc alloy plating (electroplating) layer formed on the outer peripheral surface and inner peripheral surface of a steel pipe of NSS439 (equivalent to SUS430LX of JIS standard). Coated steel pipe made by Co., Ltd. can be applied.

  Moreover, the plating layer 3a is formed in the outer peripheral surface and inner peripheral surface of the said retainer 3, respectively. Specifically, the retainer 3 is a short cylinder formed by press-forming a cold-rolled steel sheet having a plating layer 3a made of electrogalvanizing or electroless nickel plating with a thickness of about 1.2 to 1.6 mm. Or a ferritic stainless steel plate having a thickness of about 1.2 to 1.6 mm (for example, from materials equivalent to SUS429, SUS430, SUS430LX, SUS430J1L, SUS434, SUS436L, SUS436J1L, SUS443J1 and SUS444 in JIS standards) To a short cylinder by press molding.

  Then, when one end side of the retainer 3 is internally fitted to the other end side of the oil supply pipe body 2 to form the temporary assembly pipe 1a, plating layers 2a and 3a are interposed in the overlapping portion 1c of the temporary assembly pipe 1a. It is like that.

  3 to 7, the thickness of the plating layers 2a and 3a is exaggerated for convenience.

  One end side of the retainer 3 has a shape that gradually decreases in diameter toward the end portion, while the other end of the retainer 3 constitutes a fuel supply port 3 b of the fuel supply pipe 1.

  A female spiral portion 3c is formed on the inner peripheral surface of the other end side of the retainer 3 so as to be screwed with the male spiral portion 12a of the fuel cap 12, and the fuel filler port 3b can be opened and closed by the fuel cap 12. In addition, a nozzle of a fuel gun (not shown) is inserted.

  The joint assembly pipe 1b is assembled by the joint assembly apparatus 5 according to the embodiment of the present invention.

  As shown in FIG. 2, the joining and assembling apparatus 5 includes a rotating jig 6 (rotating means) capable of setting the temporary assembly pipe 1a and a laser welding machine 7 having a processing head 7a capable of continuously irradiating laser light Lz. A control panel 9 connected to the manipulator 8 (focal position changing means) for moving the machining head 7a, the rotating jig 6, the laser welding machine 7 and the manipulator 8, and outputting an operation signal to each of the devices. The control panel 9 controls the rotation operation of the rotating jig 6, the irradiation operation of the laser beam Lz, and the movement operation of the processing head 7a.

  The rotating jig 6 includes a box-shaped jig body 6a, and a servo motor 6b having a rotation axis oriented in the horizontal direction is provided inside the jig body 6a.

  A rotary shaft 6c extending substantially horizontally from the jig body 6a to the side is attached to the output shaft of the servo motor 6b. The rotary shaft 6c rotates in conjunction with the rotational drive of the servo motor 6b. It has become.

  A male spiral portion 6d that can be screwed to the female spiral portion 3c is formed on the outer peripheral surface of the rotating shaft 6c, and the male spiral portion 6d is screwed to the female spiral portion 3c of the temporary assembly tube 1a. As a result, the temporary assembly tube 1a is set on the rotary shaft 6c. When the servo motor 6b is driven to rotate in this state, the rotary shaft 6c rotates and the temporary assembly tube 1a is attached to the temporary assembly tube 1a. It rotates around the cylinder center line (horizontal axis) of the overlapping portion.

  The laser welder 7 includes a welder main body 7b that excites a laser beam Lz. Between the welder main body 7b and the processing head 7a, the laser beam Lz extends from the welder main body 7b to the processing head 7a. An optical fiber cable 7c is routed.

  The manipulator 8 includes an arm portion 8a for gripping the processing head 7a. By operating the arm portion 8a, the focal position of the laser light Lz emitted from the processing head 7a is changed to a laser beam in the irradiation direction X1. The irradiation position of Lz can be changed to the tube center line direction X2 of the temporary assembly tube 1a, and the irradiation angle of the laser light Lz can be changed to a predetermined angle.

  The control panel 9 has a storage unit 9a for storing a first output value 9b for welding and a second output value 9c that is lower than the first output value 9b.

  The control panel 9 outputs an operation signal to the manipulator 8 with the temporary assembly pipe 1a set on the rotating shaft 6c of the rotating jig 6, as shown in FIG. The processing head 7a is tilted by about 45 degrees so that the laser beam Lz is irradiated obliquely downward toward the end on the other end side, and the processing head 7a is moved in the irradiation direction X1 and the cylinder centerline direction X2. As a result, the irradiation position of the laser beam Lz is changed to the adjacent region R (region of the retainer 3 outer peripheral surface where an annular joint W described later) is formed on the outer peripheral surface of the retainer 3 with the overlapping portion 1c. The focal position of the light Lz is shifted to defocus a predetermined amount.

  Further, the control panel 9 outputs an operation signal to the rotating jig 6 and the laser welding machine 7 as shown in FIG. 4 in a state where the irradiation position of the laser beam Lz is the adjacent region R, By irradiating the laser beam Lz with the second output value 9c in advance while rotating the temporary assembly tube 1a once, the plated layer 3a is evaporated to form the annular base material extruding portion 3d. .

  When forming the base material stripping portion 3d, the portion of the plating layers 2a, 3a interposed in the superposed portion 1c that corresponds to the end of the oil supply pipe body 2 also receives the irradiation heat of the laser beam Lz. Evaporates slightly.

  Further, the control panel 9 outputs an operation signal to the manipulator 8 with the base material extruding portion 3d formed on the outer peripheral surface of the retainer 3, as shown in FIG. The distance L1 is moved to the oil supply pipe body 2 side in the line direction X2, and the distance L2 is moved outward in the radial direction of the temporary assembly pipe 1a, so that the laser light Lz is applied to the corner 2b at the end of the oil supply pipe body 2. The irradiation position is changed, and the focal position of the laser beam Lz is shifted to defocus a predetermined amount.

  In addition, the control panel 9 outputs an operation signal to the rotary jig 6 and the laser welding machine 7 as shown in FIG. 6 in a state where the irradiation position of the laser beam Lz is the corner 2b. The corner portion 2b is melted and collapsed by irradiating the laser beam Lz with the first output value 9b while rotating the temporary assembly tube 1a once.

  Then, the control panel 9 outputs an operation signal to the manipulator 8 in a state where the corner 2b is melted and collapsed, and the machining head 7a is moved in the cylinder center line direction as shown in FIG. The X2 is moved by a distance L1 toward the retainer 3 side, and is moved by a distance L3 to the inside in the radial direction of the temporary assembly pipe 1a, so that the end portion on the other end side of the oil supply pipe body 2 and the outer peripheral surface of the retainer 3 are moved. The focal position of the laser beam Lz is moved to the intersecting portion, and the laser beam Lz is irradiated with the first output value 9b while rotating the temporary assembly tube 1a once, and the corner portion 2b is collapsed. By connecting the outer peripheral surface of the retainer 3 with an annular joint W, the joint assembly pipe 1b is assembled.

  The joint assembly pipe 1b assembled by the joint assembly apparatus 5 includes branch pipes such as breather pipes and recirculation pipes and brackets for mounting on the vehicle (not shown) assembled by TIG welding or MIG brazing. Later, cationic electrodeposition coating and powder coating are applied through pretreatment for coating.

  Next, the assembly of the joint assembly pipe 1b by the joint assembly apparatus 5 will be described.

  First, an operator uses a fitting device (not shown) to fit one end side of the retainer 3 into the other end side of the oil supply pipe body 2 to make the temporary assembly pipe 1a, and the retainer 3 in the temporary assembly pipe 1a. The male spiral portion 6d of the rotating shaft 6c of the rotating jig 6 is screwed into the female spiral portion 3c, and the temporary assembly tube 1a is set on the rotating shaft 6c.

  Next, the operator presses a welding start button (not shown). Then, the control panel 9 outputs an operation signal to the manipulator 8, and on the basis of the signal, the manipulator 8 is irradiated obliquely downward with the laser light Lz toward the other end of the fuel supply pipe body 2. In this way, the processing head 7a is tilted by about 45 degrees, and the processing head 7a is moved in the irradiation direction X1 and the cylinder center line direction X2 so that the laser light Lz is applied to the adjacent region R of the outer peripheral surface of the retainer 3 with the overlapping portion 1c. Is changed, and the focal position of the laser beam Lz is shifted to defocus the laser beam Lz by a predetermined amount.

  Next, the control panel 9 outputs an operation signal to the rotating jig 6 and the laser welding machine 7, and based on the signal, the rotating jig 6 rotates the temporary assembly tube 1a once and the laser welding. The machine 7 irradiates the laser beam Lz with the second output value 9c, and evaporates the plating layer 3a to form an annular base material extruding portion 3d as shown in FIG.

  Thereafter, the control panel 9 outputs an operation signal to the manipulator 8, and based on the signal, the manipulator 8 moves the machining head 7a toward the oil supply pipe body 2 side in the cylinder centerline direction X2 as shown in FIG. The distance L1 is moved, and the distance L2 is moved outward in the radial direction of the temporary assembly tube 1a, and the focal position of the laser beam Lz is shifted and defocused by a predetermined amount.

  Thereafter, the control panel 9 outputs an operation signal to the rotating jig 6 and the laser welding machine 7, and based on the signal, the rotating jig 6 rotates the temporary assembly tube 1a once, and the laser The welding machine 7 irradiates the laser beam Lz with the first output value 9b, and melts and collapses the corner portion 2b as shown in FIG.

  The control panel 9 outputs an operation signal to the manipulator 8, and based on the signal, the manipulator 8 moves the machining head 7a toward the retainer 3 in the cylinder centerline direction X2 by a distance L1 and a temporary assembly pipe. The distance L3 is moved inward in the radial direction of 1a, and the focal position of the laser beam Lz is moved to the portion where the end of the other end of the oil supply pipe body 2 and the outer peripheral surface of the retainer 3 intersect.

  Thereafter, the control panel 9 outputs an operation signal to the rotating jig 6 and the laser welding machine 7, and based on the signal, the rotating jig 6 rotates the temporary assembly tube 1a once, and the laser The welding machine 7 irradiates the laser beam Lz with the first output value 9b and melts the outer peripheral surface (base material extruding portion 3d) of the retainer 3 as shown in FIG. The collapsed portion and the outer surface side of the retainer 3 are connected by an annular joint W to assemble the joint assembly tube 1b.

  After that, branch pipes such as breather pipes and recirculation pipes (not shown) and brackets for mounting on the vehicle are assembled to the joint assembly pipe 1b by TIG welding or MIG brazing, and then pretreatment for painting is performed. Then, cation electrodeposition coating or powder coating is applied to complete the fuel supply pipe 1.

  As described above, according to the embodiment of the present invention, the base material extruding portion 3d of the retainer 3 from which the plating layer 3a has been removed and the end portion of the oil supply pipe body 2 are melted to form the annular joint W. Defects caused by the plated layer 2a such as depressions and blowholes are less likely to occur in the annular joint W, and a sound joint W1 can be formed. Further, when removing the plating layer 3a of the temporary assembly tube 1a corresponding to the joint location, the laser beam Lz is irradiated only to the outer peripheral surface of the retainer 3. Therefore, deformation due to thermal distortion during the removal of the plating layer 3a is mainly the first. Compared to the case where deformation occurs due to thermal distortion in the two members when the plating layer 3a is removed as in Patent Document 1, the accuracy of the parts after manufacture is improved and thermal distortion occurs. In addition, the gap generated in the overlapping portion 1c of the oil supply pipe main body 2 and the retainer 3 can be reduced to suppress the occurrence of drilling, and deformation caused by thermal strain when the oil supply pipe main body 2 and the retainer 3 are joined can be suppressed. There is no need for a correction jig for correction, and the jig can be simplified to keep equipment costs low.

  Further, when the base material extruding portion 3d is formed on the outer peripheral surface of the retainer 3, the laser beam Lz is defocused by a predetermined amount. Therefore, the irradiation range of the laser light Lz is widened on the outer peripheral surface of the retainer 3, thereby Even when the width of the material stripping portion 3d becomes wide and the irradiation position of the laser beam Lz varies during bonding, the irradiation position of the laser beam Lz is prevented from protruding from the base material stripping portion 3d, and the plating layer 3a is evaporated. It is possible to ensure that the defect of the joint portion W1 due to the above does not occur. Further, since the laser beam Lz is irradiated in a defocused state, the energy density applied to the outer peripheral surface of the retainer 3 when removing the plating layer 3a is further reduced, and deformation due to thermal strain generated in the retainer 3 is further suppressed. be able to.

  In the embodiment of the present invention, the step of evaporating the plating layer 3a in the adjacent region R with the laser beam Lz to form the base material stripping portion 3d, and the corner portion 2b of the oil supply pipe body 2 with the laser beam Lz. In the melting step and the step of irradiating the laser beam Lz so as to connect the collapsed portion of the corner 2b and the outer peripheral surface of the retainer 3 with the annular joint W, the temporary assembly tube 1a is respectively rotated by the rotating jig 6. Although only one rotation is performed, the laser beam Lz may be irradiated while rotating a plurality of times in each step.

  Further, in the embodiment of the present invention, the case where one end side of the retainer 3 is internally fitted to the other end side of the oil supply pipe body 2 and the overlapped portion is connected by the annular joint portion W to assemble the joint assembly pipe 1b has been described. However, with the oil supply pipe body 2 as the first cylinder member of the present invention and the retainer 3 as the second cylinder member of the present invention, the other end side of the oil supply pipe body 2 is fitted into one end side of the retainer 3 and its overlapped portion. Even in the case where the joint assembly pipe 1b is assembled by connecting the two by the annular joint portion W, the joint assembly device 5 can be used.

  Further, in the embodiment of the present invention, one end of the retainer 3 in which the plating layer 3a is formed on the inner peripheral surface and the outer peripheral surface on the other end side of the oil supply pipe body 2 in which the plating layer 2a is formed on the inner peripheral surface and the outer peripheral surface. Although the case where the sides are internally fitted and joined to each other has been described, at least the other end of the retainer 3 having the plating layer 3a formed on the outer peripheral surface thereof is fitted to the one end of the oil supply pipe body 2 and joined. In this case, the method for assembling the joining / assembling apparatus 5 and the joining / assembling pipe 1b of the present embodiment can be applied.

  In the embodiment of the present invention, the base material extruding portion 3d is formed in the state of the temporary assembly tube 1a. However, the present invention is not limited to this, and only the retainer 3 before becoming the temporary assembly tube 1a is attached to the rotating shaft 6c. The base material extruding portion 3d is formed by irradiating the laser beam Lz while rotating the retainer 3 and then forming the other end side of the oil supply pipe body 2 on one end side of the retainer 3 with a fitting device (not shown). The temporary assembly pipe 1a may be formed by external fitting.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a joining assembly apparatus that assembles a joining assembly pipe that constitutes a fuel supply pipe that guides fuel to a fuel tank, and a joining assembly pipe assembling method.

DESCRIPTION OF SYMBOLS 1 Fuel supply pipe 1a Temporary assembly pipe 1b Joint assembly pipe 1c Polymerization part 2 Oil supply pipe main body (2nd cylinder member)
2a Plating layer 3 Retainer (first cylinder member)
3a Plating layer 5 Joining assembly device 6 Rotating jig (rotating means)
7 Laser welding machine 8 Manipulator (focal position change means)
9 Control panel (control means)
9a Storage portion R Adjacent region (region of the outer peripheral surface of the retainer where the annular joint is formed)
W annular joint Lz laser beam

Claims (3)

A rotating means having a rotating shaft;
A laser welding machine capable of continuously irradiating laser light;
Control means connected to the rotating means and the laser welding machine, for controlling the rotating operation of the rotating shaft and the irradiation operation of the laser beam;
The control means includes a storage unit for storing a first output value for welding, and a temporary assembly pipe assembled by fitting a first cylinder member having a plating layer on at least an outer peripheral surface thereof into the second cylinder member. The rotating means and the laser welding machine are controlled while being set on the rotating shaft, and the first cylindrical member outer peripheral surface of the overlapping portion of the temporary assembly pipe and the second are rotated while rotating the temporary assembly pipe one or more times. A joining assembly device configured to form an annular joint portion by continuously irradiating a laser beam at the first output value to a portion intersecting with a cylindrical member end portion to form a joint assembly tube,
The storage unit stores a second output value that is lower than the first output value,
The control means controls the rotating means and the laser welding machine in a state where the first cylindrical member or the temporary assembly pipe is set on the rotary shaft, and the first cylindrical member or the temporary assembly pipe is rotated one or more times. The plating layer is evaporated by continuously irradiating the laser beam with the second output value in advance to the region of the outer peripheral surface of the first cylindrical member where the annular joint is formed while rotating, and the annular base material is peeled off. Configured to form a part ,
The region of the outer peripheral surface of the first cylindrical member to which the laser beam having the second output value is irradiated when forming the base material stripping portion is the outer peripheral surface of the first cylindrical member where the annular joint portion is formed. The joining assembly apparatus according to claim 1, wherein the joining assembly apparatus is an adjacent region adjacent to the side opposite to the second cylindrical member with respect to the overlapping portion of the temporary assembly tube . The joining and assembling apparatus according to claim 1,
When the base material extruding portion is formed on the outer peripheral surface of the first cylindrical member, a focal position changing unit is provided that shifts the focal position of the laser light emitted from the laser welding machine to defocus a predetermined amount. A joining and assembling apparatus. The outer peripheral surface of the first cylindrical member and the end of the second cylindrical member of the overlapped portion of the temporary assembly pipe assembled by fitting the first cylindrical member having a plating layer on the outer peripheral surface into the second cylindrical member. A method for assembling a joint assembly pipe for forming a ring joint by continuously irradiating a laser beam with a first output value to a portion to form a joint assembly pipe for a fuel supply pipe,
An output value lower than the first output value in advance with respect to the region of the outer peripheral surface of the first cylinder member where the annular joint is formed while rotating the first cylinder member or the temporary assembly pipe at least once or more. Including a base material extruding part forming step of evaporating the plating layer by continuously irradiating a laser beam at the second output value to form an annular base material extruding part ,
In the base material extruding portion forming step, the region of the first cylindrical member outer peripheral surface to which the laser beam having the second output value is irradiated is the first cylindrical member outer peripheral surface in which the annular joint portion is formed. A method for assembling a bonded assembly pipe, characterized in that it is an adjacent area adjacent to the side opposite to the second cylindrical member with respect to the overlapping portion of the temporary assembly pipe in the area .

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