WO2020178902A1 - 溶接装置 - Google Patents

溶接装置 Download PDF

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Publication number
WO2020178902A1
WO2020178902A1 PCT/JP2019/008107 JP2019008107W WO2020178902A1 WO 2020178902 A1 WO2020178902 A1 WO 2020178902A1 JP 2019008107 W JP2019008107 W JP 2019008107W WO 2020178902 A1 WO2020178902 A1 WO 2020178902A1
Authority
WO
WIPO (PCT)
Prior art keywords
closed container
welding
container body
fitting portion
lid
Prior art date
Application number
PCT/JP2019/008107
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
悠大 高田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021503256A priority Critical patent/JP7012899B2/ja
Priority to CZ2021-377A priority patent/CZ309580B6/cs
Priority to CN201980093016.2A priority patent/CN113543918A/zh
Priority to PCT/JP2019/008107 priority patent/WO2020178902A1/ja
Publication of WO2020178902A1 publication Critical patent/WO2020178902A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors

Definitions

  • the present invention relates to a welding device for welding a hermetically sealed container of a hermetic compressor that can be used for an air conditioner, a hot water supply device, or the like.
  • the closed container of the hermetic compressor is a cylindrical closed container body having upper and lower openings, a closed container upper lid fitted to the upper part of the closed container body, and a closed container lower lid fitted to the lower part of the closed container body, It is composed of an installation leg attached to the bottom surface of the bottom lid of the closed container.
  • This type of closed container is configured by welding an upper fitting portion between the closed container body and the closed container upper lid, and a lower fitting portion between the closed container body and the closed container lower lid by a welding device. ..
  • a welding device for welding the upper fitting part and the lower fitting part of the closed container for example, a closed container in which the closed container upper lid and the closed container lower lid are fitted on the upper and lower sides of the closed container body is rotated by a rotating table.
  • a technique in which each of the upper fitting portion and the lower fitting portion is welded at the same time see, for example, Patent Document 1).
  • Patent Document 1 by assembling each of the upper fitting portion and the lower fitting portion at the same time, it is possible to assemble the sealed container inexpensively and highly accurately without the need to change the posture such as turning over and rolling over the sealed container during welding. Is possible.
  • the present invention is for solving the above problems, and can simultaneously weld the upper fitting portion and the lower fitting portion of the closed container body, and suppress the inclination of the closed container body during welding to obtain a good quality welded portion.
  • An object is to provide a welding device that can be obtained.
  • the welding apparatus includes an upper fitting portion and a lower fitting portion of a closed container configured by fitting a closed container upper lid and a closed container lower lid to the upper and lower sides of a cylindrical closed container body having upper and lower openings.
  • a welding device for arc-welding a portion which comprises two welding torches for performing arc welding, a turning mechanism for turning the two welding torches in the circumferential direction of the closed container body, and a closed container body portion of the closed container. It is equipped with a body holding mechanism for holding, and each of the upper fitting part and the lower fitting part of the closed container body held by the body holding mechanism is swiveled in the circumferential direction of the closed container body by the swivel mechanism. Then, arc welding is performed at the same time.
  • the upper fitting portion and the lower fitting portion of the closed container body can be simultaneously welded by turning the two welding torches in the circumferential direction of the closed container body by the turning mechanism, and the body holding member can be held during welding. Since the closed container body is held by the mechanism, the inclination of the closed container body during welding can be suppressed and a high-quality welded portion can be obtained.
  • FIG. 2 is an enlarged view of a portion surrounded by a dotted line A in FIG. 1.
  • FIG. 2 is an enlarged view of a portion surrounded by a dotted line B in FIG. 1.
  • It is a block diagram of the welding apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing of the positional relationship of the welding wire and the inclined surface of a lower fitting part in the welding apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing of the welding aim position of the welding wire in the welding apparatus which concerns on Embodiment 1 of this invention.
  • FIG. 3 is a process flow showing the operation of the welding device according to the first embodiment of the present invention. It is a schematic sectional drawing of the closed container lower lid hold
  • FIG. 3 is a plan view of the welding device according to the first embodiment of the present invention in which the transfer robot clamps the closed container body.
  • FIG. 3 is a plan view of the welding apparatus according to Embodiment 1 of the present invention in a state where the transfer robot unclamps the closed container body and retracts it.
  • hermetic compressor including a hermetic container to be welded will be described below.
  • Embodiment 1. 1 is a schematic cross-sectional view of a hermetic compressor that is a welding target of a welding device according to a first embodiment of the present invention.
  • the closed container 2 of the closed compressor 1 includes a cylindrical closed container body 2a that opens up and down, a dish-shaped closed container upper lid 2b that is fitted into an upper opening of the closed container body 2a, and the like. It has a dish-shaped closed container lower lid 2c fitted in the lower opening of the closed container body 2a.
  • the installation leg 2d is attached to the bottom surface of the closed container lower lid 2c.
  • the closed container 2 may cause vibration and noise if the closed container body 2a is tilted with respect to the installation surface defined by the installation legs 2d. Therefore, the hermetic compressor 1 is used in a posture in which the hermetic container body 2a stands upright with respect to the installation surface.
  • a compression mechanism 3 for compressing the refrigerant and an electric motor 4 for driving the compression mechanism 3 are shrink-fitted inside the closed container body 2a.
  • the electric motor 4 includes a rotor 4a that is connected to the crankshaft 5 and that transmits a rotational force from the crankshaft 5 to the compression mechanism 3, and a stator 4b.
  • the mounting surface 6 of the installation leg 2d with the closed container lower lid 2c has a dish shape
  • the bottom surface of the closed container lower lid 2c has a dish shape along the mounting surface 6.
  • FIG. 2 is an enlarged view of a portion surrounded by a dotted line A in FIG.
  • an inclined surface 10 having the same inclination angle is formed at the lower part of the closed container body 2a and the opening end of the closed container lower lid 2c.
  • the inclined surface 10 is an inclined surface that inclines upward from the inner peripheral side of the closed container 2 toward the outer peripheral side thereof, and the inclination angle b (see FIG. 5 described later) is, for example, from 15° to 25°. Has been formed.
  • the inclined surface 10 is formed over the entire circumference of the closed container body 2a and the closed container lower lid 2c. The closed container body 2a and the closed container lower lid 2c are fitted by being pressed and brought into close contact with each other on the inclined surface 10.
  • the fitting portion of the closed container body 2a and the closed container lower lid 2c (hereinafter referred to as the lower fitting portion 11) is inclined at the same inclination angle from the inner peripheral side to the outer peripheral side of the closed container 2.
  • the surface 10 the coaxiality between the central axis of the closed container body 2a and the central axis of the closed container lower lid 2c is ensured while ensuring these fitting margins.
  • FIG. 3 is an enlarged view of a portion surrounded by a dotted line B in FIG.
  • a protrusion 12 that regulates the insertion depth of the closed container upper lid 2b into the closed container body 2a.
  • the protruding portion 12 is provided so as to project outward from the outer peripheral surface of the closed container upper lid 2b.
  • the closed container upper lid 2b is inserted by being inserted into the closed container body 2a until the protrusion 12 comes into contact with the upper end of the closed container body 2a, and is pressed in that state to be fitted.
  • the mounting accuracy of the closed container top lid 2b and the closed container body 2a does not contribute to the vibration and noise of the closed compressor 1.
  • the protrusion 12 is used for the fitting portion (hereinafter, referred to as the upper fitting portion 13) between the closed container upper lid 2b and the closed container body 2a instead of the inclined surface 10.
  • the closed container 2 is welded by arc welding simultaneously around the entire circumference of each of the lower fitting portion 11 and the upper fitting portion 13 with two welding torches of a welding device described below.
  • FIG. 4 is a configuration diagram of the welding device according to the first embodiment of the present invention.
  • the x-axis indicates the horizontal direction and the y-axis indicates the vertical direction.
  • FIG. 5 is an explanatory diagram of the positional relationship between the welding wire and the inclined surface of the lower fitting portion in the welding apparatus according to the first embodiment of the present invention.
  • FIG. 6 is an explanatory diagram of a welding target position of the welding wire in the welding device according to the first embodiment of the present invention.
  • the welding device includes two welding torch 20a and a welding torch 20b for arc welding, a moving mechanism 30, a mounting table 70, a lower lid holding mechanism 80, a transfer robot 90, and a control device 100. ..
  • the work handled by the welding device of the first embodiment is the above-described closed container 2, and the lower fitting portion 11 and the upper fitting portion 13 are welded by the welding torch 20a and the welding torch 20b, respectively.
  • the welding torch 20a and the welding torch 20b send the welding wire 21 from the tip toward the welding target position, and weld the welding location by arc welding.
  • the welding wire is within the adjustment allowance d with respect to the inclination angle b of the inclined surface 10 of the lower fitting portion 11.
  • the aiming angle c of 21 is adjusted and welding is performed.
  • the target angle c is an angle formed by the welding wire 21 and the side surface of the closed container body 2a.
  • the moving mechanism 30 is a mechanism for moving the welding torch 20a and the welding torch 20b.
  • the moving mechanism 30 includes a turning mechanism 40, a traverse cylinder 50, and an individual adjustment mechanism 60.
  • the swivel mechanism 40 is a mechanism for swiveling the welding torch 20a and the welding torch 20b in the circumferential direction of the closed container body 2a.
  • the turning mechanism 40 drives the turning main shaft 41 that rotates about an axis extending in the y-axis direction, the single turning auxiliary shaft 42 that is provided orthogonal to the turning main shaft 41, and the turning main shaft 41. It includes a drive unit 43.
  • the drive unit 43 has a rotary motor 43a for transmitting a rotational force to the turning main shaft 41 and a power transmission mechanism (not shown).
  • the traverse cylinder 50 reciprocates the turning mechanism 40 in the x direction.
  • the traverse cylinder 50 is connected to the drive unit 43, and sets the welding position (the position shown in FIG. 1) for positioning the swivel spindle 41 on the central axis O of the closed container 2 and the swivel spindle 41 on the negative side of the x axis. Move to the origin position.
  • the individual adjustment mechanism 60 is a mechanism that is connected to the swivel shaft 42 of the swivel mechanism 40 and individually adjusts the welding target positions of the welding torch 20a and the welding torch 20b.
  • the individual adjustment mechanism 60 has a first mechanism 61a for adjusting the position of the welding torch 20a and a second mechanism 61b for adjusting the position of the welding torch 20b.
  • the first mechanism 61a and the second mechanism 61b can operate independently.
  • the first mechanism 61a includes an in-plane position adjusting mechanism 62 that adjusts the horizontal position x and the vertical position y from the welding aiming position, and an angle adjusting mechanism 63 that adjusts the aiming angle c with respect to the welding aiming position.
  • the second mechanism 61b has the same configuration and includes an in-plane position adjusting mechanism 62 and an angle adjusting mechanism 63.
  • the in-plane position adjusting mechanism 62 is a mechanism capable of moving the rod-shaped moving member 62a in the x-direction and the y-direction with respect to the swivel auxiliary shaft 42.
  • the angle adjusting mechanism 63 is a mechanism that rotatably supports a rod-shaped rotating member 63a connected to the lower end of the moving member 62a so that the tip of the rotating member 63a moves up and down.
  • a welding torch is connected to the tip of the rotating member 63a, and the angle adjusting mechanism 63 adjusts the target angle c of the welding torch according to the rotational position of the rotating member 63a.
  • the first mechanism 61a and the second mechanism 61b having the above configurations, the first mechanism 61a is connected to the inside of the turning auxiliary shaft 42 and the second mechanism 61b is connected to the outside of the turning auxiliary shaft 42. Then, the upper fitting portion 13 is welded by the welding torch 20a connected to the first mechanism 61a, and the lower fitting portion 11 is welded by the welding torch 20b connected to the second mechanism 61b.
  • the lower lid holding mechanism 80 is a mechanism which is arranged on the mounting table 70 and fixedly supports the work.
  • the lower lid holding mechanism 80 has a configuration in which three columns 82 extending in the y direction are erected concentrically on the pedestal 81 at different intervals, and each column 82 is attached to the installation leg 2d of the closed container 2.
  • the closed container lower lid 2c is held by being passed through the three through holes provided.
  • the transfer robot 90 has a body holding mechanism 91 for holding the closed container body 2a at the tip of the arm.
  • the transfer robot 90 holds the closed container body 2a by the body holding mechanism 91, and transfers the closed container body 2a from the apparatus of the previous process onto the lower lid holding mechanism 80 of the welding apparatus.
  • the body holding mechanism 91 is configured by a holding clamp that holds the closed container body 2a so as to be sandwiched from the surroundings, and holds the closed container body 2a in a preset holding posture.
  • the preset holding posture is a posture based on the upper surface of the pedestal 81, and is a posture in which the closed container body 2a stands upright with respect to the installation surface of the installation leg 2d.
  • the holding posture is recorded in advance in the internal memory of the control device 100.
  • the holding posture of the closed container body 2a is controlled in this way, the closed container body 2a with respect to the installation leg 2d when the closed container body 2a is transported to be fitted to the closed container lower lid 2c by the transfer robot 90.
  • the verticality of can be secured.
  • a holding clamp is used as the body holding mechanism 91 here, the holding clamp is not limited to this and may be any mechanism capable of holding the closed container body 2a.
  • the control device 100 controls the entire welding device, and is composed of, for example, a microprocessor unit. Note that the configuration of the control device 100 is not limited to this. For example, it may be configured with an updateable one such as firmware. Further, the control device 100 may be a program module that is executed by a command from a CPU (not shown) or the like.
  • FIG. 7 is a process flow showing the operation of the welding device according to the first embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional view of a closed container lower lid held by the installation leg holding mechanism of the welding apparatus according to the first embodiment of the present invention.
  • FIG. 9 is a diagram showing the closed container body in a state where the closed container upper lid is fitted in the upper opening, which is transferred by the transfer robot of the welding apparatus according to the first embodiment of the present invention.
  • FIG. 10 is a plan view of the welding apparatus according to the first embodiment of the present invention in a state where the transfer robot clamps the closed container body.
  • FIG. 11 is a plan view of the welding apparatus according to the first embodiment of the present invention in a state where the transfer robot unclamps and retracts the closed container body.
  • the lower lid 2c of the closed container is carried into the welding device by a transfer device (not shown) and set in the lower lid holding mechanism 80 (STEP 1).
  • the body holding mechanism 91 of the transfer robot 90 clamps the closed container body 2a to which the closed container upper lid 2b is fitted as shown in FIGS. 4 and 10 (STEP 2).
  • the body holding mechanism 91 of the transfer robot 90 clamps the central portion of the closed container body 2a so as to stably hold the closed container body 2a.
  • the transfer robot 90 transfers the closed container body 2a clamped by the body holding mechanism 91 from the previous step to the upper part of the closed container lower lid 2c inside the welding apparatus (STEP 3).
  • the welding torch 20a and the welding torch 20b are located at the origin by the traverse cylinder 50.
  • the transfer robot 90 lowers the closed container body 2a and fits it on the upper part of the closed container lower lid 2c (STEP 4).
  • the welding device operates the moving mechanism 30 to adjust the welding target positions of the two welding torches 20a and 20b (STEP 5). Specifically, the welding apparatus moves each welding torch to the welding position by the traverse cylinder 50, and adjusts the x direction, the y direction, and the aiming angle c of each welding torch by the individual adjustment mechanism 60.
  • the welding device starts welding while the transfer robot 90 clamps the closed container body 2a. That is, the welding device rotates the revolving main shaft 41 of the revolving mechanism 40 to move the welding torch 20a and the welding torch 20b in the circumferential direction with respect to the lower fitting portion 11 and the upper fitting portion 13, for example, in one 360° round. Rotate 210° (STEP 6) and perform arc welding. Then, when the welding torch 20a and the welding torch 20b are swiveled by 210 °, the welding device releases the clamp of the closed container body 2a by the transfer robot 90, and the transfer robot 90 is swiveled by the welding torch as shown in FIG. It is retracted outside f (STEP 7). This retreat is to prevent the transfer robot 90 from interfering with the welding torch 20a and the welding torch 20b when the welding torch 20a and the welding torch 20b weld the remaining portions.
  • the welding device turns the welding torch 20a and the welding torch 20b up to 360° and arc-welds the remaining portions (STEP 8). After the welding is completed, the welding device causes the welding torch 20a and the welding torch 20b to traverse to the origin position by the traverse cylinder 50 (STEP 9).
  • the transfer robot 90 clamps the closed container body 2a until the welding torch turns 210 °, but the clamp of the closed container body 2a is performed from the start of welding until the welding torch turns 180 ° at least half a circumference. I do. As a result, it is possible to prevent the closed container body 2a from inclining due to the strain generated during welding.
  • the welding apparatus of the first embodiment swivels the two welding torches 20a and the welding torch 20b and the two welding torches 20a and the welding torch 20b in the circumferential direction of the closed container body 2a.
  • a mechanism 40 and a body holding mechanism 91 for holding the closed container body 2a portion of the closed container 2 are provided.
  • the upper fitting portion 13 and the lower fitting portion 11 of the closed container body 2a held by the body holding mechanism 91 are respectively formed by two welding torch 20a and a welding torch 20b. Is rotated in the circumferential direction of the closed container body 2a by the turning mechanism 40 and simultaneously arc-welded.
  • each of the lower fitting portion 11 and the upper fitting portion 13 of the closed container 2 can be welded simultaneously. Further, since each of the lower fitting portion 11 and the upper fitting portion 13 of the closed container body 2a can be simultaneously welded by turning each welding torch, the closed container generated when the closed container 2 itself is rotated and welded is generated. It is possible to prevent the fitting portion between the body 2a and the closed container lower lid 2c from slipping. As described above, it is possible to suppress the inclination of the closed container body 2a during welding, and it is possible to obtain a high quality welded portion. As a result, the performance of the hermetic compressor can be improved.
  • the body holding mechanism 91 of the first embodiment holds the closed container body 2a from the start of welding to the completion of welding for at least half the circumference. As a result, it is possible to prevent the closed container body 2a from being inclined due to the strain generated during welding.
  • the welding apparatus includes an individual adjustment mechanism 60 that is connected to the swivel mechanism 40 and that individually adjusts the welding target positions of the two welding torches 20a and 20b. Thereby, the welding target positions of the welding torch 20a and the welding torch 20b can be adjusted individually.
  • a transfer robot 90 for transferring the closed container body 2a from the previous process onto the mounting table 70 is provided, and the transfer robot 90 is provided with a body holding mechanism 91. Accordingly, the configuration can be simplified as compared with the case where the transport robot 90 and the body holding mechanism 91 are separately configured.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)
PCT/JP2019/008107 2019-03-01 2019-03-01 溶接装置 WO2020178902A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2021503256A JP7012899B2 (ja) 2019-03-01 2019-03-01 溶接装置
CZ2021-377A CZ309580B6 (cs) 2019-03-01 2019-03-01 Svařovací zařízení
CN201980093016.2A CN113543918A (zh) 2019-03-01 2019-03-01 焊接装置
PCT/JP2019/008107 WO2020178902A1 (ja) 2019-03-01 2019-03-01 溶接装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/008107 WO2020178902A1 (ja) 2019-03-01 2019-03-01 溶接装置

Publications (1)

Publication Number Publication Date
WO2020178902A1 true WO2020178902A1 (ja) 2020-09-10

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ID=72338181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/008107 WO2020178902A1 (ja) 2019-03-01 2019-03-01 溶接装置

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JP (1) JP7012899B2 (cs)
CN (1) CN113543918A (cs)
CZ (1) CZ309580B6 (cs)
WO (1) WO2020178902A1 (cs)

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JPS5193751A (ja) * 1975-02-15 1976-08-17 Jidoyosetsusochi
JP2004132288A (ja) * 2002-10-11 2004-04-30 Fujitsu General Ltd 密閉型圧縮機
JP2004162657A (ja) * 2002-11-15 2004-06-10 Fujitsu General Ltd 密閉型圧縮機
JP2011132817A (ja) * 2009-12-22 2011-07-07 Mitsubishi Electric Corp 密閉型圧縮機、溶接方法
JP2019025519A (ja) * 2017-07-31 2019-02-21 ダイキン工業株式会社 タンクの製造方法、タンクの鏡板、及びタンク

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Publication number Priority date Publication date Assignee Title
JPS5490035A (en) * 1977-12-28 1979-07-17 Mitsubishi Heavy Ind Ltd Automatic welding method and apparatus
CN100393468C (zh) * 2006-02-16 2008-06-11 苏州工业园区华焊科技有限公司 一种管-管对接全位置自动焊接方法
KR20090091259A (ko) * 2008-02-24 2009-08-27 황용태 토치회전형 용접장치
CN202336648U (zh) * 2011-09-20 2012-07-18 兖矿新陆建设发展有限公司 冻结管接头自动焊接装置
CN203592215U (zh) * 2013-11-28 2014-05-14 宣城金盾防火设备有限公司 筒体转枪焊机
JP6234308B2 (ja) * 2014-04-04 2017-11-22 三菱電機株式会社 圧縮機容器の溶接方法及びそれを用いた圧縮機の製造方法
US11369950B2 (en) * 2018-02-21 2022-06-28 Saudi Arabian Oil Company Multi-functional composite catalyst materials and methods of synthesizing the catalyst materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5193751A (ja) * 1975-02-15 1976-08-17 Jidoyosetsusochi
JP2004132288A (ja) * 2002-10-11 2004-04-30 Fujitsu General Ltd 密閉型圧縮機
JP2004162657A (ja) * 2002-11-15 2004-06-10 Fujitsu General Ltd 密閉型圧縮機
JP2011132817A (ja) * 2009-12-22 2011-07-07 Mitsubishi Electric Corp 密閉型圧縮機、溶接方法
JP2019025519A (ja) * 2017-07-31 2019-02-21 ダイキン工業株式会社 タンクの製造方法、タンクの鏡板、及びタンク

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JP7012899B2 (ja) 2022-01-28
CZ2021377A3 (cs) 2022-05-04
CZ309580B6 (cs) 2023-04-26
CN113543918A (zh) 2021-10-22
JPWO2020178902A1 (ja) 2021-11-04

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