CN102248271B - Lower welding electrode of projection welding nut - Google Patents
Lower welding electrode of projection welding nut Download PDFInfo
- Publication number
- CN102248271B CN102248271B CN 201110177196 CN201110177196A CN102248271B CN 102248271 B CN102248271 B CN 102248271B CN 201110177196 CN201110177196 CN 201110177196 CN 201110177196 A CN201110177196 A CN 201110177196A CN 102248271 B CN102248271 B CN 102248271B
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- China
- Prior art keywords
- alignment pin
- welding
- nut
- support unit
- welding nut
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- 238000003466 welding Methods 0.000 title claims abstract description 114
- 230000000153 supplemental effect Effects 0.000 claims description 39
- 230000000694 effects Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The invention provides a lower welding electrode of a projection welding nut. The lower welding electrode of the projection welding nut comprises a projection welding nut locating pin and a lower electrode connecting sleeve, and further comprises a locating pin lock sleeve and a locating pin spring. A fitting surface of an upper end of the projection welding nut locating pin and the projection welding nut is a conical surface. The lower part of the projection welding nut locating pin is arranged in the locating pin lock sleeve, and the projection welding nut locating pin is axially limited through the cone fitting of the projection welding nut locating pin and the locating pin lock sleeve; the locating pin lock sleeve is in thread fit with the lower electrode connecting sleeve and is arranged on the lower electrode connecting sleeve; the locating pin spring is arranged at the bottom of the projection welding nut locating pin and is contacted with the lower electrode connecting sleeve, and the upper end of the projection welding nut locating pin is exposed on an upper surface of the locating pin lock sleeve under the action of the locating pin spring. The lower welding electrode of the projection welding nut can achieve the function of locating nuts in a plurality of types by one locating pin, the operation strength in the process of welding is reduced and the working efficiency is improved; furthermore, the parts can be reliably and effectively located, and the welding quality is guaranteed.
Description
Technical field
The invention belongs to the welding procedure tooling device field of welding production line, be specifically related to the nut-welding location.
Background technology
In the middle of the welding production process, need the welding projection welding nut on many vehicle body parts, for reaching the position accuracy demand of nut, need to use fixed nut weld machine operation.
The alignment pin top that is used for the setscrew nut hole on the bottom electrode of the employed fixed nut welding machine of existing manufacturing works is cylindrical, the nut of the corresponding a kind of specification of the alignment pin of each diameter specifications, when welding the nut of different pore size, need to change alignment pin, very inconvenient like this, affect operating efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of lower welding electrode of projection welding nut, improve by the structure to alignment pin, the nut that can be used for the location different size, must switch the problem of project-welding nut alignment pin when solving the nut of welding different size, reduce the manipulation strength in the welding process, increase work efficiency; In addition, the effective location part guarantees welding quality reliably.
The technical solution used in the present invention is as follows:
A kind of lower welding electrode of projection welding nut, it comprises project-welding nut alignment pin and bottom electrode adapter sleeve, also comprises alignment pin lock tube and locating pin spring.
The upper end of described project-welding nut alignment pin and the mating surface of project-welding nut are taper surfaces.
The bottom of described project-welding nut alignment pin is contained in the alignment pin lock tube, and both carry out axial limiting by cone match to the project-welding nut alignment pin; The threaded engagement of alignment pin lock tube and bottom electrode adapter sleeve is assemblied on the bottom electrode adapter sleeve; Described locating pin spring is assemblied in project-welding nut alignment pin bottom and contacts with the bottom electrode adapter sleeve, and the upper end of project-welding nut alignment pin is exposed to alignment pin lock tube upper surface under the effect of locating pin spring.
The present invention is by adopting a kind of conical project-welding nut alignment pin, and cone angle can design according to part locating hole size and nut specification fit dimension.According to the variation of its tapering, different at diverse location place alignment pin diameter, and guarantee the nut-welding precision when utilizing the pressing speed control part applying bottom electrode of nut welding machine, thus reach the function of location different size nut.By conical setscrew nut, realize being accurately positioned in the welded nut of different pore size on the body structure, be fit to have on Same Part or the assembly situation of the welded nut of different pore size, can reduce the replacing frequency of alignment pin or nut weld machine electrode.
Further, in order to make the reliability of part location, also comprise part supplemental support unit, supplemental support unit lock tube and supplemental support unit spring; Described part supplemental support unit is assembled in the uniform axial hole of alignment pin lock tube periphery by the threaded engagement of supplemental support unit lock tube and alignment pin lock tube, supplemental support unit spring is assemblied in the bottom of part supplemental support unit and contacts with at the bottom of the hole of described axial hole, and upper end, part supplemental support unit is exposed to alignment pin lock tube upper surface under the effect of supplemental support unit spring.
As seen, the present invention has removed the restriction that a kind of project-welding nut alignment pin can only be located a kind of model nut, has reached the function that a kind of alignment pin can be located the nut of Multiple Type, reduces the manipulation strength in the welding process, increases work efficiency.
In addition, because lower welding electrode of projection welding nut has used part supplemental support unit among the present invention, satisfy the reliability of part location with this, for position degree and the perpendicularity that guarantees welded nut provides powerful guarantee, guaranteed welding quality.
Description of drawings
Fig. 1 is the structural representation of lower welding electrode of projection welding nut;
Fig. 2 is that body panel is installed in the structural representation on the lower welding electrode of projection welding nut;
Fig. 3 is the structural representation of the upper and lower electrode of welding of projection welded nut;
Fig. 4 is that the upper and lower electrode of welding of projection welded nut is installed in the structural representation on the fixed nut welding machine.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, lower welding electrode of projection welding nut comprises project-welding nut alignment pin 7, also comprises part supplemental support unit 8, supplemental support unit lock tube 9, supplemental support unit spring 10, alignment pin lock tube 11, locating pin spring 12 and bottom electrode adapter sleeve 13.
The structure of this project-welding nut alignment pin 7 is mainly that from the difference of common project-welding nut locating pin structure the project-welding nut alignment pin is different with the profile that cooperates of project-welding nut, common project-welding nut alignment pin and the mating surface of nut are the faces of cylinder, and the mating surface of project-welding nut alignment pin of the present invention 7 upper ends and nut is taper surface, thereby the present invention has utilized just and can find the cross-sectional sizes suitable with required welded nut internal diameter to realize location to the different size nut on the conical surface.
The bottom of project-welding nut alignment pin 7 is contained in the alignment pin lock tube 11, and both carry out axial limiting by cone match to project-welding nut alignment pin 7; The threaded engagement of alignment pin lock tube 11 and bottom electrode adapter sleeve 13 is assemblied on the bottom electrode adapter sleeve 13.Locating pin spring 12 is assemblied in project-welding nut alignment pin 7 bottoms and contacts with bottom electrode adapter sleeve 13, and the upper end of project-welding nut alignment pin 7 is exposed to alignment pin lock tube 11 upper surfaces under the effect of locating pin spring 12;
Because the difference of project-welding nut weldering alignment pin 7 structures is so that when welding the project-welding nut of certain model, before moving downward, welding of projection welded nut top electrode 2 has certain interval between body panel 5 and the alignment pin lock tube 11, this moment, part was difficult to guarantee steadily, in order to address this problem, the present invention designed 4 cover part supplemental support unit 8 be distributed in the project-welding nut alignment pin around.Part supplemental support unit 8 is assembled in the uniform axial hole of alignment pin lock tube 11 peripheries by the threaded engagement of supplemental support unit lock tube 9 with alignment pin lock tube 11, supplemental support unit spring 10 is assemblied in the bottom of part supplemental support unit 8 and contacts with at the bottom of the hole of described axial hole, and 8 upper ends, part supplemental support unit are exposed to alignment pin lock tube 11 upper surfaces under the effect of supplemental support unit spring 10.
Referring to Fig. 3 and Fig. 4, above lower welding electrode of projection welding nut 2 and top electrode 3 cooperate, and are installed on the project-welding nut welding machine, and welding comprises carriage 1 and pedestal 4.Installation and occupation mode are as follows:
At first assemble lower welding electrode of projection welding nut shown in Figure 1 during use, part supplemental support unit 8 is assembled on the alignment pin lock tube 11 by the threaded engagement of supplemental support unit lock tube 9 with alignment pin lock tube 11, supplemental support unit spring 10 is assembled to 8 bottoms, part supplemental support unit and contacts with alignment pin lock tube 11, part supplemental support unit amounts to 4 covers, is distributed on the alignment pin lock tube 11.
Afterwards project-welding nut alignment pin 7 is assembled on the bottom electrode adapter sleeve 13 by alignment pin lock tube 11 threaded engagement with bottom electrode adapter sleeve 13, locating pin spring 12 is assembled to nut part alignment pin 7 bottoms and contacts with bottom electrode adapter sleeve 13.
The project-welding nut welder lower electrode 3 of again assembling being finished and project-welding nut welding machine top electrode 2 are assembled on the pedestal 4 of project-welding nut welding machine.
When preparing welding body panel 5 is cooperated with project-welding nut alignment pin 7 by the project-welding nut via hole on it and overlap 8 supports of part supplemental support unit by 4, then project-welding nut 6 is set to above the project-welding nut alignment pin 7, during welding, welding of projection welded nut top electrode 2 moves downward, after project-welding nut 6 contacts, applied pressure compresses until body panel 5 contacts with alignment pin lock tube 11 upper surfaces the locating pin spring 12 of nut part alignment pin 7 bottoms and the secondary support surface spring 10 of 8 bottoms, part supplemental support unit, along with the energising of project-welding nut welding machine makes welding of projection welded nut top electrode 2, project-welding nut 6, body panel 5 and lower welding electrode of projection welding nut 3 form the closed-loop path, thereby the heat that has a resistance is implemented welding.
Claims (2)
1. lower welding electrode of projection welding nut, it comprises project-welding nut alignment pin (7) and bottom electrode adapter sleeve (13), it is characterized in that: also comprise alignment pin lock tube (11), locating pin spring (12), part supplemental support unit (8), supplemental support unit lock tube (9) and supplemental support unit spring (10);
The mating surface of the upper end of described project-welding nut alignment pin (7) and project-welding nut (6) is taper surface;
The bottom of described project-welding nut alignment pin (7) is contained in the alignment pin lock tube (11), and both carry out axial limiting by cone match to project-welding nut alignment pin (7); The threaded engagement of alignment pin lock tube (11) and bottom electrode adapter sleeve (13) is assemblied on the bottom electrode adapter sleeve (13); Described locating pin spring (12) is assemblied in project-welding nut alignment pin (7) bottom and contacts with bottom electrode adapter sleeve (13), and the upper end of project-welding nut alignment pin (7) is exposed to alignment pin lock tube (11) upper surface under the effect of locating pin spring (12);
Described part supplemental support unit (8) is assembled in the uniform axial hole of alignment pin lock tube (11) periphery by the threaded engagement of supplemental support unit lock tube (9) with alignment pin lock tube (11), supplemental support unit spring (10) is assemblied in the bottom of part supplemental support unit (8) and contacts with at the bottom of the hole of described axial hole, and upper end, part supplemental support unit (8) is exposed to alignment pin lock tube (11) upper surface under the effect of supplemental support unit spring (10).
2. welding of projection welded nut bottom electrode according to claim 1, it is characterized in that: described part supplemental support unit (8), supplemental support unit lock tube (9) and supplemental support unit spring (10) arrange quadruplet altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177196 CN102248271B (en) | 2011-06-28 | 2011-06-28 | Lower welding electrode of projection welding nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177196 CN102248271B (en) | 2011-06-28 | 2011-06-28 | Lower welding electrode of projection welding nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248271A CN102248271A (en) | 2011-11-23 |
| CN102248271B true CN102248271B (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110177196 Expired - Fee Related CN102248271B (en) | 2011-06-28 | 2011-06-28 | Lower welding electrode of projection welding nut |
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| Country | Link |
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| CN (1) | CN102248271B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528346B (en) * | 2012-01-08 | 2015-03-25 | 温州职业技术学院 | Flexible electrode welding fixture for keeping position of workpiece |
| CN103042298A (en) * | 2012-12-29 | 2013-04-17 | 广州松兴电器有限公司 | Device for preventing inverted welding of nut in automobile industry |
| CN114346393B (en) * | 2022-01-21 | 2023-09-12 | 东风汽车零部件(集团)有限公司通用铸锻分公司 | Nut projection welding compatibility locating pin and nut projection welding device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008463A (en) * | 1996-05-11 | 1999-12-28 | Aoyama; Yoshitaka | Resistance welding electrode with guide pin |
| DE10209492A1 (en) * | 2002-03-05 | 2003-10-09 | Daimler Chrysler Ag | Pressure welding machine for welding a nut to a metal sheet comprises a floating centering pin having a metal sheet-receiving region adjacent to a nut-receiving region for centering the metal sheet |
| CN201645106U (en) * | 2010-03-10 | 2010-11-24 | 浙江吉利汽车有限公司 | Projection welding nut locating device preventing current from dividing |
-
2011
- 2011-06-28 CN CN 201110177196 patent/CN102248271B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008463A (en) * | 1996-05-11 | 1999-12-28 | Aoyama; Yoshitaka | Resistance welding electrode with guide pin |
| DE10209492A1 (en) * | 2002-03-05 | 2003-10-09 | Daimler Chrysler Ag | Pressure welding machine for welding a nut to a metal sheet comprises a floating centering pin having a metal sheet-receiving region adjacent to a nut-receiving region for centering the metal sheet |
| CN201645106U (en) * | 2010-03-10 | 2010-11-24 | 浙江吉利汽车有限公司 | Projection welding nut locating device preventing current from dividing |
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| Publication number | Publication date |
|---|---|
| CN102248271A (en) | 2011-11-23 |
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Granted publication date: 20130327 |