CN103567617A - Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process - Google Patents

Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process Download PDF

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Publication number
CN103567617A
CN103567617A CN201210272039.XA CN201210272039A CN103567617A CN 103567617 A CN103567617 A CN 103567617A CN 201210272039 A CN201210272039 A CN 201210272039A CN 103567617 A CN103567617 A CN 103567617A
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CN
China
Prior art keywords
gag
reservoir
spot welding
crossbeam
hold
Prior art date
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CN201210272039.XA
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Chinese (zh)
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CN103567617B (en
Inventor
高岩
安福军
孙红霞
云增波
Original Assignee
南车青岛四方机车车辆股份有限公司
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Priority to CN201210272039.XA priority Critical patent/CN103567617B/en
Publication of CN103567617A publication Critical patent/CN103567617A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/10Spot welding; Stitch welding
    • B23K11/11Spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/36Auxiliary equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/02Iron or ferrous alloys
    • B23K2103/04Steel or steel alloys

Abstract

The invention relates to a compressing device for single-side spot welding of a stainless steel sidewall, a spot welding machine and a welding process. The spot welding machine comprises a welder gantry, a welding platform, and spot welding electrodes. The welding platform is used for holding a sidewall to be welded. The compressing device is disposed on the welding platform and comprises two vertical posts arranged on two sides of the welding platform, and a cross beam crossing over the welding platform and connecting the two vertical posts. The cross beam is provided with a plurality of compressing parts used for compressing the sidewall. The vertical posts are movably connected with the welding platform. A frame and a wallboard are integrally compressed with the compressing device, the frame is tightly attached to the outer face of the wallboard and the platform, corrugated deformation of a workpiece is eliminated by pressure of an air cylinder, the wallboard and the frame form a whole after spot welding, and the whole is higher in rigidity; after compressing force is removed, the outer surface can still be even and flatness is improved.

Description

Stainless steel curb wall is hold down gag, mash welder and welding procedure for indirect welding
Technical field
The invention belongs to welder technical field, relate to a kind of stainless steel curb wall hold down gag, mash welder and welding procedure for indirect welding.
Background technology
Stainless steel material is a kind of clean, environmental protection, durable, high strength, erosion-resisting excellent material, on vehicle body of railway vehicle, widely applies, and because of its special physical property feature, the larger distortion of as easy as rolling off a log generation after welding; And existing steel structure of car body side wall generally adopts slab and girder, Side fascia and beam column are used austenite stainless steel plate cold moudling, utilize indirect welding equipment spot welding moulding.
Figure mono-: prior art jig structure chart.
As shown in figure mono-, in pinpoint welding procedure, side wall unit is in a freedom without restrained condition.Because wall board material exists certain wave transformation, unit skeleton is also difficult to reach definitely smooth state, progressive spot welding under this state, and can there is larger wave transformation in side wall unit outer surface.Utilize welder to carry out in welding process the large-sized sheet material of other materials and other structures, also there will be sheet material cannot reach flatness requirement, or after welding, occur the phenomenon of larger modification, serious, can cause because of modification stress the phenomenon of solder joint cracking.
Summary of the invention
Main purpose of the present invention is to address the above problem and is not enough, provides a kind of simple in structure, can effectively eliminate workpiece wave transformation, improves the stainless steel curb wall indirect welding hold down gag of welded workpiece flatness and rigidity.
Another main purpose of the present invention is, provides a kind of simple in structure, can effectively eliminate workpiece wave transformation, improves the mash welder of welded workpiece flatness and rigidity.
Another main purpose of the present invention is, provides a kind of and can effectively eliminate workpiece wave transformation, improves the welding procedure of welded workpiece flatness and rigidity.
For achieving the above object, technical scheme of the present invention is:
A kind of stainless steel car body side wall single-side spot welding hold down gag, comprise two columns that are divided into jig both sides, be across the crossbeam that described jig top connects two described columns, on described crossbeam, be provided with a plurality ofly for compressing the compressing member of described side wall, described column is connected with described jig is removable.
Preferably, described jig both sides are provided with track base, on described track base, linear guides are installed, and described column lower end is built-in with guide rail slide block, and described guide rail slide block is embedded in described linear guides, along described linear guides, moves.
Preferably, be provided with lifting reservoir on described column, described crossbeam is fixedly connected with described lifting reservoir.
Preferably, on described column, be provided with the position limiting structure moving up for limiting described crossbeam.
Preferably, described compressing member is by compressing reservoir and reservoir pressure head forms, and described compression reservoir is connected with wind regime by pipeline, is serially connected with wind regime distributing valve in described pipeline, described compression reservoir is slidably connected with described crossbeam, and the action of described compression reservoir is controlled by reservoir control valve.
Preferably, described crossbeam is hollow structure, and described pipeline and described compression reservoir are arranged in described crossbeam, in the bottom of described crossbeam, are provided with elongated open slot, and described reservoir pressure head stretches out from the open slot of described crossbeam bottom.
Preferably, described pipeline comprises that wind path house steward and many wind paths are in charge of, described wind path house steward is provided with a plurality of air outlets, described wind path is in charge of one end and described air outlet is fixedly connected to form air-out path, the other end is connected with described compression reservoir, and described volume control damper is serially connected on described wind path house steward.
Preferably, described crossbeam is made by stainless steel tube.
Another technical scheme of the present invention is:
, comprise welding machine portal frame, for placing jig and the spot-wedling electrode of side wall to be welded, on described jig, be provided with above-mentioned hold down gag.
Another technical scheme of the present invention is:
, comprise the steps:
Side wall to be welded is placed on the jig of mash welder;
Utilize hold down gag that a certain bond pad locations of spot welding that transversely needs of side wall is carried out to integral body compression, use side wall skeleton and wallboard outer surface and described jig closely connected;
The solder joint being compressed by hold down gag is carried out to spot weld operation;
Unclamp hold down gag, hold down gag is adjusted to the position that next place needs spot welding, compress side wall, implement spot welding.
Content to sum up, a kind of stainless steel curb wall of the present invention is hold down gag, mash welder and welding procedure for indirect welding, owing to increasing and being provided with hold down gag on jig, utilize hold down gag by skeleton and the whole compression of wallboard, make skeleton and wallboard outerplanar and platform closely connected, utilize reservoir pressure that workpiece wave transformation is eliminated, spot welding rear wall plate and skeleton form integral body, and self rigidity strengthens, and discharge after thrust, it is smooth that outer surface still can keep, and improves flatness.Hold down gag height is adjustable simultaneously, thrust is adjustable, compresses reservoir and reservoir pressure head quantity corresponding one by one, compress reservoir and reservoir pressure head quantity and relative between position or a square adjustable, make whole hold down gag can adapt to different in width or compression demand, adapt to different welding needs.In addition, this hold down gag can be transformed on the basis of former mash welder jig, reduces production costs, and guiding linear guides is installed in platform both sides, also makes overall structure and the coordination of former machine, attractive in appearance, motion smoothing.
Accompanying drawing explanation:
Fig. 1 is prior art jig structural representation;
Fig. 2 is spot welding machine structure schematic diagram of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is hold down gag structural representation of the present invention;
Fig. 5 is that the A of Fig. 4 is to view;
Fig. 6 is that the B of Fig. 4 is to view;
Fig. 7 is the C-C cutaway view of Fig. 4.
As shown in Figures 1 to 7, welding machine portal frame 1, side wall 2, jig 3, hold down gag 4, crossbeam 5, column 6, track base 7, linear guides 8, guide rail slide block 9, locating detent 10, compress reservoir 11, reservoir pressure head 12, reservoir control valve 13, wind regime distributing valve 14, copper platform 15, top electrode 16, auxiliary electrode 17, lifting reservoir 18, bearing 19.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As shown in Figures 2 and 3, a kind of mash welder of the present invention, comprise welding machine portal frame 1, jig 3, hold down gag 4 and spot-wedling electrode, the superiors of jig 3 are copper platform 15, the top electrode 16 that spot welding is used and auxiliary electrode 17 are fixed on welding machine portal frame 1, auxiliary electrode 17 is connected with copper platform 15, and side wall 2 to be welded is placed on the copper platform 15 of jig 3 the superiors, and hold down gag 4 is for compressing side wall 2.
As shown in Figure 4, hold down gag 4 comprises the column 6 that is positioned at jig 3 both sides and the crossbeam 5 that connects two columns 6, and crossbeam 5, across the top of jig 3, is provided with a plurality of for compressing the compressing member of side wall 2 on crossbeam 5.According to the architectural feature of different automobile types side wall 2, can increase and decrease the quantity of compressing member, in the present embodiment, 11 groups of compressing members are preferably set on crossbeam 5.11 groups of compressing members can make skeleton and the whole compression of wallboard of side wall 2, make the skeleton of side wall 2 and the outer surface of wallboard closely connected in when welding and jig 3, and then the wave transformation of side wall 2 wallboards is eliminated, complete in this state spot welding, spot welding rear wall plate and skeleton form integral body, and self rigidity strengthens, and discharge after thrust, it is smooth that outer surface still can keep, and improves flatness.
As shown in Figures 2 to 6, the both sides of jig 3 are respectively equipped with track base 7, linear guides 8 is installed on track base 7, column 6 inner sides, lower end are near the jig 3 built-in guide rail slide blocks 9 in place, guide rail slide block 9 is embedded in linear guides 8, guide rail slide block 9 can move along linear guides 8, drives whole hold down gag 4 along the vertically moving of side wall 2, and adjusts the compacted position of hold down gag 4 with the position of spot welding as required.
As shown in Figure 5, be provided with lifting reservoir 18 on column 6, in the present embodiment, preferably lifting reservoir 18 be arranged on to the inside of column 6, the two ends of crossbeam 5 are fixedly connected on lifting reservoir 18, regulate the lifting of crossbeam 5 by controlling the action of lifting reservoir 18.While needing side wall 2 to be placed on jig 3 before welding, controlling lifting reservoir 18 moves upward, crossbeam 5 is risen, reserve enough height and place side wall 2, after side wall 2 is in place, control again lifting reservoir 18 and move downward, make crossbeam 5 drop to the position of the design that can compress side wall 2.
When compressing reservoir 11 compression side wall 2, can upwards there is larger reaction force, for fear of when compressing, crossbeam 5 moves up, and is provided with the position limiting structure moving up for limiting crossbeam 5 on column 6.As shown in Figure 4, what position limiting structure adopted is to extend two parallel triangle bearings 19 are set in each column 6 upward horizon direction, on two bearings 19, be relatively set with pin-and-hole, in pin-and-hole, insert locating detent 10, locating detent 10 is positioned at the top of crossbeam 5 ends, the position of locating detent 10 defines the height of crossbeam 5, so locating detent 10 can stop moving upward of crossbeam 5.When crossbeam 5 need to rise, locating detent 10 is pulled down, when crossbeam 5 drops to design attitude and need to locate, insert locating detent 10.
As shown in Figure 7, in the present embodiment, compress power and preferably adopt reservoir to compress, thrust is larger, easy to control, and stable action.Compressing member, by compressing reservoir 11 and reservoir pressure head 12 forms, compresses reservoir 11 and is connected with wind regime (not shown) by pipeline, compresses reservoir 11 and promotes reservoir pressure heads 12 and move downward, with the side wall 2 below compressing.Compress reservoir 11 and be slidably connected on crossbeam 5, so that according to the position of side wall 2 skeleton beam columns, arbitrarily regulate the position that compresses point.
As shown in Figure 7, crossbeam 5 is hollow structure, and in order to increase bulk strength and the rigidity of crossbeam 5, crossbeam 5 preferably adopts stainless steel tube to make, and connects the pipeline of wind regime and compress reservoir 11 to be all arranged in crossbeam 5.In the bottom of crossbeam 5, be provided with elongated open slot, reservoir pressure head 12 stretches out downwards from open slot, and every group compresses reservoir 11 and reservoir pressure head 12 all can be along open slot transverse shifting.
11 compress reservoir 11 and can be connected with wind regime respectively by 11 pipelines, but in order to realize centralized Control and simplified structure, in the present embodiment, the pipeline that connects wind regime comprises that a wind path house steward (not shown) and 11 wind paths are in charge of (not shown), one end of wind path house steward is connected with wind regime, wind path house steward's terminal is provided with 11 air outlets, one end and an air outlet that every wind path is in charge of are fixedly connected to form air-out path, and the other end that wind path is in charge of connects with corresponding compression reservoir 11.Wind regime is in charge of to 11 compression reservoir 11 air feeds by wind path house steward, 11 wind paths, controls the thrust that each compresses reservoir 11.On wind path house steward, be serially connected with for regulating the wind regime distributing valve 14 of blast, by wind regime distributing valve 14, controlled wind path house steward's blast, and then the unified thrust that respectively compresses reservoir 11 of controlling, the maximum pressure that compresses reservoir 11 is 6Kgf/cm 2, the maximum output thrust of single cylinder body is 50Kgf, and the compression and the release movement that respectively compress reservoir 11 control by reservoir control valve 13 is unified, can guarantee that like this thrust of side wall 2 each points is balanced and synchronously consistent.
Wind path house steward's terminal part and each wind path are in charge of the inside that is all arranged on crossbeam 5, and 13 of allocation of the amount of air valve 14 and reservoir control valves are arranged on column 6, handled easily personnel operation.
Wind path is in charge of and is can be common plastic tube or sebific duct, and wind path to divide length of tube to have reserved, can meet and compress the needs that reservoir 11 positions regulate arbitrarily.The wind path that is connected with air outlet of increase and decrease is in charge of simultaneously, can regulate the quantity that compresses reservoir 11 and reservoir pressure head 12, when required compression reservoir 11 and reservoir pressure head 12 quantity go up the quantity of air outlet over wind path house steward, can increase wind path house steward's quantity.
Describe welding procedure below in detail as follows:
1, control lifting reservoir 18 and move upward, crossbeam 5 is risen, reserve enough height, side wall 2 is placed on jig 3.
2, after side wall 2 is in place, control lifting reservoir 18 and move downward, make crossbeam 5 drop to the position of the design that can compress side wall 2, locating detent 10 is inserted in the pin-and-hole of bearing 19, the height of crossbeam 5 is fixed.
3, promote column 6 and move along track base 7, and then adjust the position of hold down gag 4, make the crossbeam 5 in hold down gag 4 be positioned at a certain top that transversely needs the solder joint of spot welding of side wall 2.Again according to side wall 2 skeleton structure transversely herein, the position that regulates each to compress reservoir 11, and the reservoir 11 that is fixed and clamped.
4, regulate wind regime distributing valve 14, control the force value that compresses reservoir 11 and reservoir pressure head 12, make it meet technological requirement.Control air cylinder control valve 13, starts and compresses reservoir 11 compression actions simultaneously, reservoir pressure head 12 is stretched out downwards and compress side wall 2.
5, the spot-wedling electrode on the welding machine of start-up point, carries out spot welding to all solder joints within the scope of reservoir pressure head 12 compressions.
Compression due to 11 reservoir pressure heads 12, make side wall 2 transversely to skeleton and wallboard, realize whole compression at this, the outer surface that makes skeleton and wallboard when welding and jig 3 closely connected, and rely on thrust that the wave transformation of side wall 2 wallboards is eliminated, and completing in this state spot welding, spot welding rear wall plate and skeleton form integral body, self rigidity strengthens, discharge after thrust, it is smooth that outer surface still can keep, and improves flatness.
6, control air cylinder control valve 13, discharge and compress reservoir 11 releases, and reservoir pressure head 12 upwards lifts, and then unclamps hold down gag 4.
7, repeat above-mentioned 3 to 6 step, hold down gag 4 is adjusted to the position that next place needs spot welding, compress side wall 2, implement spot welding, until all solder joint has welded.
8, the locating detent 10 at crossbeam 5 two ends is extracted, started lifting reservoir 18 and move upward, drive crossbeam 5 upwards to lift, the side wall 2 after welding is shifted out, then crossbeam 5 is set back.
Whole welding process finishes.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.

Claims (10)

1. a stainless steel car body side wall single-side spot welding hold down gag, it is characterized in that: comprise two columns that are divided into jig both sides, be across the crossbeam that described jig top connects two described columns, on described crossbeam, be provided with a plurality ofly for compressing the compressing member of described side wall, described column is connected with described jig is removable.
2. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 1, it is characterized in that: described jig both sides are provided with track base, on described track base, linear guides is installed, described column lower end is built-in with guide rail slide block, described guide rail slide block is embedded in described linear guides, along described linear guides, moves.
3. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 1, is characterized in that: on described column, be provided with lifting reservoir, described crossbeam is fixedly connected with described lifting reservoir.
4. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 3, is characterized in that:
On described column, be provided with the position limiting structure moving up for limiting described crossbeam.
5. the stainless steel car body side wall single-side spot welding hold down gag as described in claim 1 to 4 any one, it is characterized in that: described compressing member is by compressing reservoir and reservoir pressure head forms, described compression reservoir is connected with wind regime by pipeline, in described pipeline, be serially connected with wind regime distributing valve, described compression reservoir is slidably connected with described crossbeam, and the action of described compression reservoir is controlled by reservoir control valve.
6. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 5, it is characterized in that: described crossbeam is hollow structure, described pipeline and described compression reservoir are arranged in described crossbeam, in the bottom of described crossbeam, be provided with elongated open slot, described reservoir pressure head stretches out from the open slot of described crossbeam bottom.
7. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 5, it is characterized in that: described pipeline comprises that wind path house steward and many wind paths are in charge of, described wind path house steward is provided with a plurality of air outlets, described wind path is in charge of one end and described air outlet is fixedly connected to form air-out path, the other end is connected with described compression reservoir, and described volume control damper is serially connected on described wind path house steward.
8. stainless steel car body side wall single-side spot welding hold down gag as claimed in claim 6, is characterized in that: described crossbeam is made by stainless steel tube.
9. a mash welder, comprises welding machine portal frame, for placing jig and the spot-wedling electrode of side wall to be welded, it is characterized in that: on described jig, be provided with the hold down gag as described in claim 1 to 9 any one.
10. a welding procedure, is characterized in that, comprises the steps:
Side wall to be welded is placed on the jig of mash welder;
Utilize hold down gag that a certain bond pad locations of spot welding that transversely needs of side wall is carried out to integral body compression, use side wall skeleton and wallboard outer surface and described jig closely connected;
The solder joint being compressed by hold down gag is carried out to spot weld operation;
Unclamp hold down gag, hold down gag is adjusted to the position that next place needs spot welding, compress side wall, implement spot welding.
CN201210272039.XA 2012-08-01 2012-08-01 Stainless steel curb wall is hold down gag, mash welder and welding procedure for indirect welding Active CN103567617B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959745A (en) * 2015-08-05 2015-10-07 贵州汇通申发钢结构有限公司 Gantry type welding device used for welding boxcar side wall
CN105382393A (en) * 2015-12-08 2016-03-09 天津七所高科技有限公司 Single-face double-point welding process for automobile
CN110369847A (en) * 2019-08-21 2019-10-25 中车四方车辆有限公司 A kind of single-side resistance spot welding welding tooling and welding method for rail vehicle

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CN202317535U (en) * 2011-11-18 2012-07-11 株洲联诚集团有限责任公司 Electric locomotive roof assembly welding fixture
CN102554437A (en) * 2012-01-31 2012-07-11 福州星云自动化技术有限公司 Gantry-type automatic spot welding system for battery pack
CN202804471U (en) * 2012-08-01 2013-03-20 南车青岛四方机车车辆股份有限公司 Spot welder and compressing device for welding lateral wall units of the stainless steel

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US5020714A (en) * 1989-04-12 1991-06-04 The Boeing Company Method and press apparatus for manufacturing
US5409158A (en) * 1993-07-08 1995-04-25 Progressive Tool & Industries Company Automobile framing system
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959745A (en) * 2015-08-05 2015-10-07 贵州汇通申发钢结构有限公司 Gantry type welding device used for welding boxcar side wall
CN105382393A (en) * 2015-12-08 2016-03-09 天津七所高科技有限公司 Single-face double-point welding process for automobile
CN110369847A (en) * 2019-08-21 2019-10-25 中车四方车辆有限公司 A kind of single-side resistance spot welding welding tooling and welding method for rail vehicle

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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88

Patentee after: CRRC QINGDAO SIFANG CO., LTD.

Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88

Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd.

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