CN202010851U - Single-side double-layer spot welding structure - Google Patents
Single-side double-layer spot welding structure Download PDFInfo
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- CN202010851U CN202010851U CN2010206862644U CN201020686264U CN202010851U CN 202010851 U CN202010851 U CN 202010851U CN 2010206862644 U CN2010206862644 U CN 2010206862644U CN 201020686264 U CN201020686264 U CN 201020686264U CN 202010851 U CN202010851 U CN 202010851U
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Abstract
The utility model discloses a single-side double-layer spot welding structure comprising an inner plate and an outer plate, wherein the outer plate is resided at the outside of the inner plate; the end part of the outer plate is bent inwards to wrap the end part of the inner plate; the inner side surface of the end part of the inner plate is provided with an umbrella-type projection part which is protruded inwards; the outer side surface of the end part of the inner plate is provided with a corresponding dent and formed a gap with the outer plate; the end part of the outer plate is provided with a bump in response to the umbrella-type projection part; the bump is contacted with the electrode when the single-side double-layer spot welding is carried out. By virtue of this spot welding structure, the inner plate and the outer plate respectively have the umbrella-type projection part and the bump at a welding spot and form a gap when welding so that the heat can be rapidly irradiated and no burr and splatter is formed during welding, thus the outer appearance of the welding spot is not affected by the welding after welding.
Description
Technical field
The utility model relates to a kind of spot-welded structures, particularly relates to a kind of single-surface double-layer spot-welded structures.
Background technology
In auto industry now, in order to guarantee outside plate and inner panel bonding strength, a lot of main engine plants begin to adopt when the inner and outer plates bound edge mode that spot welding adds gluing with inner panel and outside plate administration of fixed, require inside and outside plate point postwelding outside plate outward appearance without any influencing and defective simultaneously.Traditional doorframe bound edge spot-welding technology is that weld in inner and outer plates is provided with electrode up and down respectively and welds, and so two-sided welding makes outside plate serious depression occur.
Therefore the indirect welding technology has appearred, its core is the surperficial copper coin expansion contact area that electric current passes through door skin when making welding, the welding current loop is made up of electrode, door skin flanging, inner plate of car door, referring to Fig. 1, the end of inner panel 1 is by the end bound edge of outside plate 2 ' among Fig. 1, and welded by electrode 3 ' on the bound edge position, the outside is supported by copper pad 4 '.Adopt this method that weld nugget 5 ' is formed between door skin flanging and inner plate of car door, presentation quality and weld strength have some improvement, its shortcoming also is tangible: 1, outside plate or be subjected to the influence of strong heat, outside plate still has tangible thermal deformation and weighs wounded.2, outside plate is under the situation of pressurized, and outer plate surfaces depression size changes with heating, and the product amount of reprocessing is big.3, in order to guarantee surperficial zero defect, require the spot welding heating little, can cause little spot welding current less than normal like this, phenomenons such as weldering nuclear instability.4, bottom electrode often need be processed into the product radian, and the spot-wedling electrode consumption is big up and down.Even therefore adopted single face two point welding technology, the outside plate of welding region still can produce depression and the surface weighs phenomenon wounded, and still need after welding, carry out the defective that sanding and polishing remedies the inner and outer plates surface, increase production cost, reduce the efficient of processing.
Summary of the invention
Technical problem to be solved in the utility model provides and has a kind ofly solved the spot welding heating problem, makes the little single-surface double-layer spot-welded structures of spot welding outer surface damage.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of single-surface double-layer spot-welded structures, comprise inner panel, be positioned at the outside plate in the inner panel outside, the inside bending in the end of described outside plate coats the end of described inner panel, it is characterized in that, has an inwardly outstanding umbrella shape protuberance on the medial surface of the end of described inner panel, have corresponding depression on the lateral surface of the end of described inner panel and also and between the outside plate form the space, has projection on the end of described outside plate, the electrode when described projection contacts single-surface double-layer spot welding corresponding to this protuberance.Such spot-welded structures, inner panel and outside plate have projection and formation space at the solder joint place of welding, make the heat of welding to spread rapidly, can not form burr and splash, and make the influence that the outward appearance at solder joint place is not welded after welding.
Preferably, the thickness of described inner panel is 1.0mm-1.2mm, and the thickness of outside plate is 0.8mm, and the height of described protuberance is 0.5mm, and diameter is 3mm.
In order to make splashing of when welding littler, outer surface is more level and smooth, and the electrode during described single-surface double-layer spot welding is a flat electrodes.
Compared with prior art, the invention has the advantages that described inner panel and the outside plate solder joint place when welding has projection and forms the space, heat when making welding can spread rapidly, can not form burr and splash, and adopt indirect welding can not influence the outward appearance of weld, and can weld 2 points simultaneously, the production efficiency when having improved welding has reduced production cost.
Description of drawings
Fig. 1 is a single-surface double-layer spot-welded structures of the prior art, and wherein Fig. 1 a is the spot-welded structures schematic diagram of inner panel and outside plate in the prior art, the structural representation when Fig. 1 b is welding.
Fig. 2 is a single-surface double-layer spot-welded structures in the utility model.
Fig. 3 is the structure of inner panel in the utility model single-surface double-layer spot-welded structures.
Fig. 4 is the formation schematic diagram of the utility model single-surface double-layer spot-welded structures.
Fig. 5 welds schematic diagram simultaneously for the single face two point of the utility model single-surface double-layer spot-welded structures.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Single-surface double-layer spot-welded structures of the present utility model, shown in Fig. 2-5, comprise inner panel 1, be positioned at the outside plate 2 in inner panel 1 outside, one end end, 22 bendings of outside plate 2 inwardly envelope the end 12 of described inner panel 1, and has an inwardly outstanding protuberance 11 on the medial surface of the end 12 that this inner panel 1 is coated by outside plate 2, have on the lateral surface of end 12 corresponding depression and and outside plate 2 between form space 13, accordingly, on the end 22 of the outside plate 2 that coats this inner panel 1 end 12, also have and correspond to the inwardly outstanding projectioies 21 of this protuberance 11.Protuberance 11 on this inner panel 1 is the protuberance of a umbrella, the height of this protuberance and size can be regulated according to the thickness of inner panel and outside plate, preferably, corresponding to the inner panel of 1.0mm-1.2mm thickness and the outside plate bound edge spot-welding technology of 0.8mm thickness, this protuberance 11 is that a height H is 0.5mm, and diameter D is the umbrella projection of 3mm.
The formation of the protuberance 11 of inner panel 1 and the projection 21 of outside plate 2 is in the bound edge process, adopts the umbrella shape thimble by punch forming in inner panel 1 processing earlier, make to form umbrella shape protuberance 11 on its end 12, and the another side of end 12 has corresponding depression; In the bound edge process, forming a diameter on the pressing plate 3 of bound edge mould is the hole 31 of 6mm again, owing to the own rigidity of inner panel 1, make in the bound edge process, on outside plate 2, to form a projection 21 automatically, and should projection 21 these protuberances 11 of applying.
Spot-welded structures of the present utility model is to adopt single face two point welding technology, and the upper/lower electrode 4 of mash welder contacts the projection 21 of outside plate 2 respectively.Electric current is 6 ± 0.5KA during welding, and the time is that 5～6 cycles are the most suitable, and once welding can be finished the welding of 2 of single faces.The heat that spot welding energising back produces merges the top of the protuberance 11 of inner panel 1, sees shown in Figure 5.Has depression owing to have protuberance 11 lateral surfaces on the medial surface of the end 12 of inner panel 1, the lateral surface of inner panel 1 and outside plate 2 are thoroughly isolated at the spot welding position, spot welding postwelding heat reduces rapidly, can not influence the surface in outside plate 2 outsides, avoid the outside plate local dent that causes owing to the spot welding heat and weigh phenomenon wounded.And this spot welding adopts ordinary telegram very good, spot-wedling electrode employing flat electrodes, and welding back protuberance 11 and projection 21 are pressed in the space 13, make spot welding inner and outer plates flat appearance, do not have burr and splash, and meet B level appearance requirement.Because the weldering nuclear diameter that obtains after the welding satisfies the drawing requirement fully greater than 4.5mm, the spot welding qualification rate reaches 100%.Spot welding current increases to the heat that 8KA causes can not cause the outward appearance damage, and spot welding current is very little to the welding influence of inner and outer plates.And this technology is stable in pinpoint welding procedure, the size of current in the time of can regulating the height of protuberance and size and welding according to different inner and outer plates thickness, welding parameter selectable range broad.
Adopt spot-welded structures of the present utility model to carry out dual-layer, single-sided point postwelding, outward appearance can be cancelled the sanding and polishing operation of doorframe point postwelding without any defective in process, satisfies client's the harsh requirement of outward appearance fully.And original salient point weldering protrusions is columniform, columniform area is little, have during welding and splash, protuberance in the utility model is the mild transition of umbrella shape and edge, better effects and if do not have the generation of splashing during welding, and this Welding Structure can directly weld two solder joints simultaneously, and the production efficiency when having improved welding has reduced cost.
In addition to the implementation, the utility model also includes other embodiments, and the technical scheme that all employing equivalents or equivalent substitute mode form all should fall within the protection domain of the utility model claim.
Claims (3)
1. single-surface double-layer spot-welded structures, comprise inner panel (1), be positioned at the outside plate (2) in inner panel (1) outside, the inside bending in the end (22) of described outside plate (2) coats the end (12) of described inner panel (1), it is characterized in that, has an inwardly outstanding umbrella shape protuberance (11) on the medial surface of the end (12) of described inner panel (1), have on the lateral surface of the end (12) of described inner panel (1) corresponding depression and and outside plate (2) between form space (13), has projection (21) on the end (22) of described outside plate (2), the electrode (4) the during spot welding of described projection (21) contact single-surface double-layer corresponding to this protuberance (11).
2. single-surface double-layer spot-welded structures as claimed in claim 1 is characterized in that: the thickness of described inner panel (1) is 1.0mm-1.2mm, and the thickness of outside plate is 0.8mm, and the height of described protuberance (11) is 0.5mm, and diameter is 3mm.
3. single-surface double-layer spot-welded structures as claimed in claim 1 is characterized in that: the electrode (4) during described single-surface double-layer spot welding is a flat electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206862644U CN202010851U (en) | 2010-12-17 | 2010-12-17 | Single-side double-layer spot welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206862644U CN202010851U (en) | 2010-12-17 | 2010-12-17 | Single-side double-layer spot welding structure |
Publications (1)
| Publication Number | Publication Date |
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| CN202010851U true CN202010851U (en) | 2011-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206862644U Expired - Fee Related CN202010851U (en) | 2010-12-17 | 2010-12-17 | Single-side double-layer spot welding structure |
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| CN (1) | CN202010851U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708189A (en) * | 2015-03-16 | 2015-06-17 | 武汉敏惠汽车零部件有限公司 | Two-sided single spot welding device for appearance surface metal plates |
| CN106041308A (en) * | 2016-08-18 | 2016-10-26 | 安徽巨自动化装备有限公司 | Method for controlling gaps of laser fusion weld plates of aluminum alloy vehicle bodies |
| CN106132623A (en) * | 2014-04-17 | 2016-11-16 | 日本精工株式会社 | Welder and method for resistance welding and for protruding the shape of the projection of welding |
| CN111710564A (en) * | 2020-06-19 | 2020-09-25 | 哈尔滨工业大学 | Small-size sealed electromagnetic relay reed that metal bonding of bending filled tin |
| CN112453667A (en) * | 2020-10-22 | 2021-03-09 | 奇瑞汽车股份有限公司 | Method for improving covering part edge-covering single-side spot welding quality and single-side spot welding convex hull die |
-
2010
- 2010-12-17 CN CN2010206862644U patent/CN202010851U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132623A (en) * | 2014-04-17 | 2016-11-16 | 日本精工株式会社 | Welder and method for resistance welding and for protruding the shape of the projection of welding |
| CN106132623B (en) * | 2014-04-17 | 2018-11-16 | 日本精工株式会社 | The shape of welder and resistance welding method and the protrusion for protruding welding |
| CN104708189A (en) * | 2015-03-16 | 2015-06-17 | 武汉敏惠汽车零部件有限公司 | Two-sided single spot welding device for appearance surface metal plates |
| CN106041308A (en) * | 2016-08-18 | 2016-10-26 | 安徽巨自动化装备有限公司 | Method for controlling gaps of laser fusion weld plates of aluminum alloy vehicle bodies |
| CN111710564A (en) * | 2020-06-19 | 2020-09-25 | 哈尔滨工业大学 | Small-size sealed electromagnetic relay reed that metal bonding of bending filled tin |
| CN111710564B (en) * | 2020-06-19 | 2022-05-03 | 哈尔滨工业大学 | Small-size sealed electromagnetic relay reed that metal bonding of bending filled tin |
| CN112453667A (en) * | 2020-10-22 | 2021-03-09 | 奇瑞汽车股份有限公司 | Method for improving covering part edge-covering single-side spot welding quality and single-side spot welding convex hull die |
| CN112453667B (en) * | 2020-10-22 | 2022-04-29 | 奇瑞汽车股份有限公司 | Method for improving covering part edge-covering single-side spot welding quality and single-side spot welding convex hull die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Mindao Auto Parts Co., Ltd. Assignor: Ningbo Xintai Machinery Co., Ltd. Contract record no.: 2012330000582 Denomination of utility model: Single-side double-layer spot welding structure Granted publication date: 20111019 License type: Exclusive License Record date: 20121226 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20151217 |
|
| EXPY | Termination of patent right or utility model |