CN200984677Y - Covered component spot welder - Google Patents
Covered component spot welder Download PDFInfo
- Publication number
- CN200984677Y CN200984677Y CN 200620136473 CN200620136473U CN200984677Y CN 200984677 Y CN200984677 Y CN 200984677Y CN 200620136473 CN200620136473 CN 200620136473 CN 200620136473 U CN200620136473 U CN 200620136473U CN 200984677 Y CN200984677 Y CN 200984677Y
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- CN
- China
- Prior art keywords
- rectangular tube
- electrode
- welding
- increased
- lower electrode
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a tack welding device for paneling components, which comprises a welding machine with an upper electrode and a lower electrode, a water pipe with water injection nozzle is arranged inside the lower electrode, the water pipe is communicated with a water inlet connector, a steel sleeve is bell socketed on the upper electrode ; the utility model is provided with a pipe connector and the water injection nozzle which can spray cooling water to the two sides of a rectangular steel tube, for the upper electrode is provided with the steel sleeve, the heat extraction on a thin plate can be reduced in process of tack welding and the melting rate of the thin plate is increased; in the later period of formation of welding spot, the steel sleeve can undertake most of the pressure of electrode, the pressure of electrode at the melting center location can be decreased, so the indentation is prevented to be increased, the heat extractions of the lower electrode and the rectangular tube are strengthened, the temperature of the rectangular tube is decreased, the contacting area between the lower electrode and the rectangular tube is increased, the rectangular tube is assured to get enough rigidity, the offset from the welding spot center to the side of a thick plate is further decreased; the welding spot is deviated from the centerline of the rectangular tube, the local rigidity at the welding spot is increased.
Description
Technical field
The utility model belongs to the automobile production welding equipment, is specifically related to a kind of covering assembly spot welding device.
Background technology
Passenger car covering assembly is made up of wall thickness 1.5-2.0mm mild steel rectangular tube skeleton and 0.8mm mild steel covering, if adopt conventional direct welding method, because the characteristics of structure, moderate finite deformation often takes place in welding process rectangular tube and spot welding place, serious impression, make solder joint fusing core shape undesired, Joint Strength seriously descends; Also directly have a strong impact on surface quality.
At present, producer mainly adopts the manual electric arc welding discontinuous welding to the welding of covering assembly, methods such as carbon dioxide gas arc welding discontinuous welding, and efficient is low, and covering particularly often takes place by the phenomenon of burn-through in poor working environment, directly influences surface quality.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provide a kind of and can prevent welding process rectangular tube generation moderate finite deformation, and prevent that the solder joint place from serious impression occurring than gross distortion and solder joint surface, solves the covering assembly spot welding device of solder joint fusing bigger skew of core and the undesired problem of shape.
For achieving the above object, the technical solution adopted in the utility model is: comprise the mash welder that has top electrode and bottom electrode, bottom electrode inside offers the waterway pipe of band water jet, and this waterway pipe is connected with water supply connector, is set with steel bushing on the top electrode.
Steel bushing of the present utility model tightly is enclosed within on the taper seat of top electrode by conical bore; Bottom electrode is a groove structure.
The utility model has pipe joint and the water jet that can give rectangular tube both sides spray cooling water, is set with steel bushing on the top electrode, can reduce the heat radiation of thin plate side in pinpoint welding procedure, increases the melting rate of thin plate; Form the later stage at solder joint, steel bushing is born most electrode pressure, and the electrode pressure at fusing core place is reduced, and has prevented the further increase of load mould; Strengthen the heat radiation of bottom electrode and rectangular tube, reduce the temperature of rectangular tube, increase the contact area between bottom electrode and rectangular tube, guarantee that rectangular tube has enough rigidity, further reduce the side-play amount of solder joint core to the slab side; Solder joint departs from the rectangular tube center line, increases solder joint place local stiffness.
Description of drawings
Fig. 1 is this novel overall structure schematic diagram;
Fig. 2 is the utility model device bottom electrode front view;
Fig. 3 is the utility model device bottom electrode left view;
Fig. 4 is the utility model device top electrode front view.
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.
Referring to Fig. 1-4, the utility model comprises the mash welder 7 that has top electrode 6 and bottom electrode 2, bottom electrode 2 is a groove structure, offer the waterway pipe 9 of band water jet 8 in bottom electrode 2 inside, this waterway pipe 9 is connected with water supply connector 1, and steel bushing 5 tightly is enclosed within on the taper seat of top electrode 6 by conical bore.
The course of work of the present utility model is as follows: rectangular tube 3 and covering 4 are contained in the groove of bottom electrode 2, weld, water supply connector simultaneously 1 feeds cooling water,, with the both sides of cooling water jet flow to rectangular tube 3 rectangular tube 3 is cooled off by the water jet on the bottom electrode 28.
Top electrode of the present utility model adds the cover steel bushing, reduces the heat radiation of covering side, increases the melting rate of covering, reduces the side-play amount of solder joint core to the slab side; Spot welding begins process, and just electrode tip contacts with workpiece, and contact area is little, current density is big, solder joint localizing electrode pressure is big, helps melting core and forms, in the spot welding later stage, must there be the load mould of trace at the solder joint place, the part steel bushing contacts with workpiece, and steel bushing has been born most electrode pressure, and the electrode pressure at fusing core place reduces, prevent the further increase of load mould, also helped the formation of the stable and solder joint of nugget; Bottom electrode adopts the flute profile electrode and sparge pipe is arranged, both increased the contact area between bottom electrode and rectangular tube, reduce the circulation distance of electric current in rectangular tube, reduce unnecessary caloric value, also, reduce the mean temperature of welding process rectangular tube, increase the rigidity of rectangular tube by water spray cooling to the rectangular tube both sides, avoid the rectangular tube distortion, also help reducing the side-play amount of solder joint core to the slab side; Make solder joint depart from the rectangular tube center line, increase solder joint place local stiffness, prevent that the welding process distortion is excessive.
Claims (3)
1, a kind of covering assembly spot welding device, comprise the mash welder (7) that has top electrode (6) and bottom electrode (2), it is characterized in that: bottom electrode (2) inside offers the waterway pipe (9) of band water jet (8), this waterway pipe (9) is connected with water supply connector (1), is set with steel bushing (5) on the top electrode (6).
2, covering assembly spot welding device according to claim 1, it is characterized in that: said steel bushing (5) tightly is enclosed within on the taper seat of top electrode (6) by conical bore.
3, covering assembly spot welding device according to claim 1, it is characterized in that: said bottom electrode * (2) is a groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136473 CN200984677Y (en) | 2006-12-22 | 2006-12-22 | Covered component spot welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136473 CN200984677Y (en) | 2006-12-22 | 2006-12-22 | Covered component spot welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200984677Y true CN200984677Y (en) | 2007-12-05 |
Family
ID=38914139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620136473 Expired - Fee Related CN200984677Y (en) | 2006-12-22 | 2006-12-22 | Covered component spot welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200984677Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814496A (en) * | 2019-11-18 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Method and structure for welding bush on flat pipe |
-
2006
- 2006-12-22 CN CN 200620136473 patent/CN200984677Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814496A (en) * | 2019-11-18 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Method and structure for welding bush on flat pipe |
| CN110814496B (en) * | 2019-11-18 | 2021-10-26 | 中国航发贵州黎阳航空动力有限公司 | Method and structure for welding bush on flat pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |