CN1927522A - Rapid cold nut welding electrode - Google Patents
Rapid cold nut welding electrode Download PDFInfo
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- CN1927522A CN1927522A CN 200610124594 CN200610124594A CN1927522A CN 1927522 A CN1927522 A CN 1927522A CN 200610124594 CN200610124594 CN 200610124594 CN 200610124594 A CN200610124594 A CN 200610124594A CN 1927522 A CN1927522 A CN 1927522A
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Abstract
The invention relates to a cold nut welding electrode. Wherein, it comprises lower electrode, which is a tube with internal through hole; and its upper open is connected to the compressing cover whose middle is through hole; the chamber of electrode has cooling muffle whose upper end is open; the insulated base is fixed inside the chamber of fixing muffle; the upper open of cooling muffle is sealing connected to the upper end of electrode; the insulated base is fixed with the lower end of spring whose upper end is connected to the bottom of positioning pin; the positioning pin is in the middle hole of compressing cover to insulated connect the insulated muffle; the cooling water chamber with annular space and sealing upper end is formed between the cooling muffle and electrode, to connect the cooling water resource. Compared with traditional electrode, the invention can reduce its temperature, improve service life and confirm the welding quality.
Description
Technical field
The present invention relates to a kind of resistance welding electrode, particularly a kind of nut resistance welding electrode.
Background technology
Along with increasing sharply of China's car output, nut welder skill is adopted in the vehicle body manufacturing in a large number, because on a coachbuilt body 60-100 nut arranged generally, is used for fixing parts such as inside gadget and instrument board, than truck showed increased.
Nut-welding electrode structure and principle can be referring to the disclosed patent documentation ZL200520095803.6 of State Intellectual Property Office.
The nut-welding electrode of using has a kind of structure as shown in Figure 5 at present.Only comprise bottom electrode among the figure, omitted top electrode simple in structure, that only cooperate bottom electrode to use.Bottom electrode comprises alignment pin 1, gland 2, insulation sleeve 9, spring 3, electrode body 4 and insulating base 5.Electrode body 4 is the tubular body in open-blind hole, upper end, is the gland 2 of through hole in the middle of its upper end is connecting, and gland 2 is connected with electrode body 4 by being threaded.The cell body inner chamber of electrode body 4 is provided with insulating base 5, and insulating base 5 is fixed on the bottom of electrode body 4 cell bodies.Fixedly connected spring 3 lower ends on the insulating base 5, spring 3 upper ends connect and are fixed on the bottom of alignment pin 1.In the hole of alignment pin 1 in the middle of gland 2, and by insulation sleeve 9 maintenance insulation connections.Be provided with cooling water cavity 40 in the electrode body 4, cooling water cavity 40 in electrode body 4, the bottom of insulating base 5, and be communicated with cooling water source.
As can be seen from Figure 5, when above-mentioned traditional electrode welded nut and steel plate, cooling end distance of positions electrode surface is far away.In actual applications, cooling effect is undesirable, the high easy to wear and high easily inefficacy of spring temperature of electrode surface temperature, so service life is low, the nut poor welding quality.These problem has become the principal contradiction of vehicle body nut welding procedure.
Summary of the invention
At existing nut-welding electrode the electrode body temperature at present of working continue to maintain the condition of high temperature and its inner spring of causing because of high temperature easily lost efficacy, electrode surface phenomenon easy to wear, the present invention need solve is technical problem to bottom electrode body fast cooling, for this reason, the present invention proposes a kind of rapid cold nut welding electrode, comprise bottom electrode, wherein bottom electrode comprises alignment pin, gland, insulation sleeve, spring, electrode body and insulating base; Described electrode body is provided with the tubular body in hole for the center, upper end, is the described gland of through hole in the middle of its aperture, upper end is connecting.Be provided with described insulating base in the hole of described electrode body, fixedly connected described spring lower end on the insulating base, the spring upper end is connected the bottom of described alignment pin, in the hole of alignment pin in the middle of described gland, and, be provided with cooling water cavity in the described electrode body by described insulation sleeve maintenance insulation connection; It is characterized in that: described electrode body is for there being the tubular body of through hole in it, also be provided with coolant jacket in the electrode body inner chamber, coolant jacket is the upper end open container shapes, described insulating base is fixed in the coolant jacket inner chamber, coolant jacket upper end open place and described electrode body upper end are tightly connected, form the cooling water cavity of the annular gap of upper end sealing between coolant jacket and described electrode body, cooling water cavity is communicated with cooling water source.
Further improvement of the present invention is: also be fixed with insulating collar between described spring upper end and the alignment pin.Can better spring and electrode body main body be kept apart like this, thereby stop more heats from electrode body.
Compare with traditional electrode, between coolant jacket of the present invention and the bottom electrode body inner chamber annular gap is arranged, recirculated cooling water can arrive at herein coolant jacket and electrode body are cooled off rapidly.Obviously shorten to the electrode end surface distance on the coolant jacket top that cooling water arrives at, electrode inner chamber water-cooled area obviously increases, thereby effectively reduce electrode temperature, the present invention has given full play to the effect of recirculated cooling water, can effectively reduce the electrode bulk temperature, improve service life, guarantee nut and automobile body welding quality.
Description of drawings
Fig. 1 is a sectional structure chart of the present invention.
Fig. 2 is a vertical view among Fig. 1;
Fig. 3 is an A-A direction partial view among Fig. 2.
Fig. 4 is a water-cooled principle schematic of the present invention.
Fig. 5 is the nut weldering lower electrode arrangement figure of prior art.
Identifier declaration among the figure: alignment pin 1, gland 2, spring 3, electrode body 4, insulating base 5, coolant jacket 6, insulating collar 7, sealing ring 8, insulation sleeve 9, spring locating shaft 10, flat recess 20, cooling water cavity 40, fixed edge 60, electrode welder seat 11, sparge pipe 12.
The specific embodiment
Rapid cold nut welding electrode of the present invention is made of top electrode, bottom electrode, and wherein lower electrode arrangement is referring to Fig. 1 example structure.
Wherein bottom electrode mainly is made of alignment pin 1, gland 2, insulation sleeve 9, spring 3, electrode body 4, insulating base 5, coolant jacket 6, insulating collar 7, sealing ring 8 etc.Fixedly connected the thick lower end of tower spring 3 on the insulating base 5, the thin upper end of spring 3 is connected the bottom of alignment pin 1, and the bottom protrusion of alignment pin 1 is a spring locating shaft 10.Between spring 3 upper ends and alignment pin 1, be fixed with insulating collar 7, completely cut off the heat that alignment pin 1 transmits, guaranteed that spring 3 works under relatively low temperature.Coolant jacket 6 is the upper end open container shapes, and insulating base 5 is fixed on the bottom of coolant jacket 6 inner chambers, and there is the fixed edge of outwards routing up 60 at coolant jacket 6 upper end open edges, and fixed edge 60 is clipped between gland 2 and the electrode body 4.Electrode body 4 is the cell body of upper end open, and its upper end is the gland 2 of through hole in the middle of connecting by thread connecting mode.In the cell body inner chamber that is supported and fixed on electrode body 4 of coolant jacket 6 by fixed edge 60.In the hole of alignment pin 1 in the middle of gland 2, and by insulation sleeve 9 maintenance insulation connections.Form the cooling water cavity 40 of the annular gap of upper end sealing between coolant jacket 6 and electrode body 4, cooling water cavity 40 is communicated with cooling water source.Be provided with sealing ring 8 between the fixed edge 60 of coolant jacket 4 upper ends and the edge, electrode body 4 upper end, sealing ring 8 stops cooling water to infiltrate the possibility of alignment pin peripheral clearance and coolant jacket inner chamber.
Bottom electrode body 4 upper surfaces have the 1mm*1mm flat recess, and as shown in Figures 2 and 3, wherein Fig. 3 is figure A-A direction rotation 90.Partial enlarged drawing can effectively be derived the high temperature and high pressure gas that nut and top electrode and alignment pin form enclosure space, and fault such as occur when avoiding welding splashing and blow out.
The alignment pin material is 45 steel, surface hardening, and insulating collar, insulation sleeve, insulating base material are bakelite, and spring material is 65Mn, and sealing ring material is a rubber, and all the other materials are chromium zirconium copper.
Annular gap between coolant jacket 6 and bottom electrode body 4 inner chambers, recirculated cooling water can arrive at herein coolant jacket and electrode body are cooled off rapidly, and electrode water-cooled principle is referring to Fig. 4.Compare with traditional electrode, obviously shorten to the electrode end surface distance on the coolant jacket top that cooling water arrives at, and electrode inner chamber water-cooled area obviously increases, thereby effectively reduces electrode temperature.
Claims (7)
1, rapid cold nut welding electrode comprises bottom electrode, and wherein bottom electrode comprises alignment pin, gland, insulation sleeve, spring, electrode body and insulating base; Described electrode body is provided with the tubular body in hole for the center, upper end, is the described gland of through hole in the middle of its aperture, upper end is connecting.Be provided with described insulating base in the hole of described electrode body, fixedly connected described spring lower end on the insulating base, the spring upper end is connected the bottom of described alignment pin, in the hole of alignment pin in the middle of described gland, and, be provided with cooling water cavity in the described electrode body by described insulation sleeve maintenance insulation connection; It is characterized in that: described electrode body is for there being the tubular body of through hole in it, also be provided with coolant jacket in the electrode body inner chamber, coolant jacket is the upper end open container shapes, described insulating base is fixed in the coolant jacket inner chamber, coolant jacket upper end open place and described electrode body upper end are tightly connected, form the cooling water cavity of the annular gap of upper end sealing between coolant jacket and described electrode body, cooling water cavity is communicated with cooling water source.
2, rapid cold nut welding electrode according to claim 1 is characterized in that: also be fixed with insulating collar between described spring upper end and the alignment pin.
3, rapid cold nut welding electrode according to claim 1 and 2 is characterized in that: described spring is the thick tower spring in thin lower end, upper end.
4, rapid cold nut welding electrode according to claim 1 and 2 is characterized in that: the upper surface of described bottom electrode body has flat recess.
5, rapid cold nut welding electrode according to claim 3 is characterized in that: the upper surface of described bottom electrode body has flat recess.
6, rapid cold nut welding electrode according to claim 4 is characterized in that: described flat recess is wide * highly be 1mm * 1mm.
7, rapid cold nut welding electrode according to claim 5 is characterized in that: described flat recess is wide * highly be 1mm * 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610124594 CN1927522A (en) | 2006-09-21 | 2006-09-21 | Rapid cold nut welding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610124594 CN1927522A (en) | 2006-09-21 | 2006-09-21 | Rapid cold nut welding electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1927522A true CN1927522A (en) | 2007-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610124594 Pending CN1927522A (en) | 2006-09-21 | 2006-09-21 | Rapid cold nut welding electrode |
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| CN (1) | CN1927522A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862920A (en) * | 2009-04-17 | 2010-10-20 | Smk株式会社 | Welding lower electrode device |
| CN102151972A (en) * | 2011-05-13 | 2011-08-17 | 重庆平伟科技(集团)有限公司 | Compulsive air-cooling lower electrode specially used for resistance projection welding of annular nut |
| CN102294539A (en) * | 2011-08-17 | 2011-12-28 | 成都九鼎科技(集团)有限公司 | Two-piece set projection welding floating device |
| CN105057870A (en) * | 2015-08-14 | 2015-11-18 | 数码模冲压技术（武汉）有限公司 | Electrode for projection welding of resistor |
| CN105537746A (en) * | 2016-01-27 | 2016-05-04 | 大连嘉翔科技有限公司 | Projection welding bottom electrode capable of preventing water leakage and long in service life |
| CN106735822A (en) * | 2016-12-28 | 2017-05-31 | 重庆太乙机械有限公司 | A kind of cooling system of welding of projection welded nut special purpose device |
| CN107498170A (en) * | 2016-06-14 | 2017-12-22 | 无锡市华琳制冷设备有限公司 | A kind of electrode of electric resistance welding |
-
2006
- 2006-09-21 CN CN 200610124594 patent/CN1927522A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862920A (en) * | 2009-04-17 | 2010-10-20 | Smk株式会社 | Welding lower electrode device |
| CN102151972A (en) * | 2011-05-13 | 2011-08-17 | 重庆平伟科技(集团)有限公司 | Compulsive air-cooling lower electrode specially used for resistance projection welding of annular nut |
| CN102294539A (en) * | 2011-08-17 | 2011-12-28 | 成都九鼎科技(集团)有限公司 | Two-piece set projection welding floating device |
| CN105057870A (en) * | 2015-08-14 | 2015-11-18 | 数码模冲压技术（武汉）有限公司 | Electrode for projection welding of resistor |
| CN105537746A (en) * | 2016-01-27 | 2016-05-04 | 大连嘉翔科技有限公司 | Projection welding bottom electrode capable of preventing water leakage and long in service life |
| CN107498170A (en) * | 2016-06-14 | 2017-12-22 | 无锡市华琳制冷设备有限公司 | A kind of electrode of electric resistance welding |
| CN106735822A (en) * | 2016-12-28 | 2017-05-31 | 重庆太乙机械有限公司 | A kind of cooling system of welding of projection welded nut special purpose device |
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