CN201960263U - Projection welding device for cap nut - Google Patents

Projection welding device for cap nut Download PDF

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Publication number
CN201960263U
CN201960263U CN2010206704000U CN201020670400U CN201960263U CN 201960263 U CN201960263 U CN 201960263U CN 2010206704000 U CN2010206704000 U CN 2010206704000U CN 201020670400 U CN201020670400 U CN 201020670400U CN 201960263 U CN201960263 U CN 201960263U
Authority
CN
China
Prior art keywords
top electrode
bottom electrode
electrode
projection welding
acorn nut
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
Application number
CN2010206704000U
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Chinese (zh)
Inventor
吴道友
吴成明
回金楷
林全海
刘立权
李书福
杨健
赵福全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN2010206704000U priority Critical patent/CN201960263U/en
Application granted granted Critical
Publication of CN201960263U publication Critical patent/CN201960263U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a projection welding device for a cap nut, belongs to the technical field of welding, and solves the technical problems of low production efficiency, complex welding device and the like existing in the prior art. The projection welding device for the cap nut comprises a top electrode arm, a bottom electrode arm and a nut sleeve, wherein the top electrode arm is fixedly provided with a top electrode clamp; the lower end part of the top electrode clamp is connected with a top electrode; the bottom electrode arm is fixedly provided with a bottom electrode clamp; the upper end part of the bottom electrode clamp is connected with a bottom electrode; the top electrode can be arranged opposite to the bottom electrode; and the nut sleeve is used for connecting the top electrode with the cap nut. The device has a simple structure, low production cost, high universality for various vehicle types and high production efficiency for small-scale multi-type cap nuts; manual welding is adopted; and the nut sleeve is more stably sleeved on the cap nut through a cavity.

Description

A kind of projection welding device of acorn nut
Technical field
The utility model belongs to welding technology field, relates to a kind of projection welding device of acorn nut.
Background technology
Some local needs to use screw location on some sheet metal components on the body of a motor car, generally fixedly acorn nut and screw fit on sheet metal component.The lower end of acorn nut is a flat board, the upper end closed of nut.
Fixed form between acorn nut and the sheet metal component mainly contains welding and riveted joint at present, and in general welding manner is commonplace.
CO2 welding, spot welding and projection welding are adopted in welding between general acorn nut and the sheet metal component.CO2 welding, this welding manner cost height, quality do not guarantee, it is not enough to occur weld strength easily; Welding slag, the destruction internal thread etc. that splashes influence the next procedure assembling, and production efficiency is low, inconvenient operation.
Spot welding is divided into direct welding and indirect welding two big classes usually.During direct welding, electrode is by two side direction weld feeds of workpiece.Typical direct welding mode is a most common form, and at this moment all there is the electrode impression both sides of workpiece.The conductive plate of big bonding area is done bottom electrode, can eliminate or alleviate the impression of lower work piece like this.Be usually used in the spot welding of decorative panel.But the production efficiency of spot welding is lower, not as the projection welding height.
Projection welding is to process one or more protruding points on the binding face of a weldment in advance, makes the heating that contacts and switch on of itself and another weldment surface, presses then and collapses, and makes these contact points form the electric resistance welding method of solder joints.
Projection welding is compared also with spot welding and is had the following advantages:
1) in a weld cycle, can weld a plurality of solder joints simultaneously.Productivity ratio height not only, and do not have shunt influence.Therefore can on narrow position, arrange solder joint and the not restriction of receptor site distance.
2) because current density combines in salient point, and current density is big,, and can form less nugget reliably so available less current is welded.When spot welding, corresponding to a certain thickness of slab, the nugget that form less than a certain size is very difficult.
3) accurate, the consistent size in the position of salient point, the strength ratio of each point is more even.Therefore can be for the size of given intensity, projection welding spot less than spot welding.
4) owing to adopt big plane electrode, and salient point is arranged on the workpiece, so can alleviate the impression on another workpiece exposed surface to greatest extent.Simultaneously big plane electrode little, the good heat dissipation of current density, the wearing and tearing of electrode are more much smaller than spot welding, thereby greatly reduce the M R expense of electrode.
5) compare with spot welding, the oil of surface of the work, rust, oxide skin, coating and other coatings are less to the influence of projection welding, but clean surface still can obtain than stabilized quality.
The weak point of projection welding is the additional process that needs the punching out projection welding; The electrode more complicated; Owing to a plurality of solder joints of a less important weldering, need to use the high-power welding machine of high electrode pressure, high mechanical precision.
At present, for the on-the-spot cover type nut welding of welding and assembling production lines, because cover type nut belongs to special nut, the quantity of using is less relatively, there is not special projection welding electrode that it is carried out projection welding, the scene all is to adopt the interim electrode of making, and therefore is badly in need of a kind ofly can satisfying the projection welding requirement, and cost of investment is low, quality assurance, projection welding device easy and simple to handle.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist at existing technology, and the projection welding device of one kind of multiple acorn nuts that vehicle versatility is good, production efficiency is high is provided.
The purpose of this utility model can realize by following technical proposal: a kind of projection welding device of acorn nut, comprise upper electrode arm and bottom arm, it is characterized in that, set firmly the top electrode holder on the described upper electrode arm, the bottom of described top electrode holder is connected with top electrode, be installed with the bottom electrode holder on the described bottom arm, the upper end of described bottom electrode holder is connected with bottom electrode, described top electrode can be in over against the position with bottom electrode, and this device also comprises the ut socket of be used to the to Connect Power utmost point and an acorn nut.
The operation principle of this device is as follows: top electrode is connected the two poles of the earth of power supply with bottom electrode, have locating hole on the sheet metal component, and sheet metal component is connected on the bottom electrode, acorn nut is placed on the top of locating hole on the panel beating again.Ut socket is placed on the top of acorn nut, with top electrode be placed on ut socket on.Connect power supply again, the two poles of the earth of electric current arrive acorn nut and sheet metal component by top electrode and bottom electrode respectively, discharge between acorn nut and the sheet metal component, the edge, lower surface of acorn nut and the fusing of sheet metal component contact position, again ut socket is applied downward pressure, ut socket produces downward active force to acorn nut, and acorn nut and sheet metal component are welded together.This apparatus structure is simple, and production cost is low, adopts manual welding, and multiple vehicle versatility is good, in the face of the acorn nut production efficiency height of small lot polytypic.
In the projection welding device of above-mentioned a kind of acorn nut, described top electrode holder and bottom electrode holder are shaft-like, are located in respectively on upper electrode arm and the bottom arm.
In the projection welding device of above-mentioned a kind of acorn nut, the upper end of the bottom of described top electrode holder and bottom electrode holder all has axial shrinkage pool, and described top electrode and bottom electrode are shaft-like and can be plugged in the shrinkage pool of top electrode holder and bottom electrode holder by an end respectively.After top electrode or bottom electrode generation loss, can be easy to top electrode or bottom electrode are more changed.
In the projection welding device of above-mentioned a kind of acorn nut, described shrinkage pool is a bellmouth, and an end of described top electrode and an end of bottom electrode are all tapered.Bellmouth is more prone to mutual chucking.
In the projection welding device of above-mentioned a kind of acorn nut, have boss one on the upper surface of described bottom electrode, the upper surface of described boss one has boss two.Boss one is resisted against on the locating hole edge of sheet metal component, and boss two upper ends are resisted against on the acorn nut.
In the projection welding device of above-mentioned a kind of acorn nut, described boss one and boss two coaxial settings.Coaxial setting is more prone to processing.
In the projection welding device of above-mentioned a kind of acorn nut, the lower end of described ut socket has axial cavity, and described cavity can be set on the acorn nut.Ut socket is set on the acorn nut more stable by cavity.
Compared with prior art, this apparatus structure is simple, and production cost is low, adopts manual welding, and multiple vehicle versatility is good, in the face of the acorn nut production efficiency height of small lot polytypic; Be equipped with axial shrinkage pool in the bottom of top electrode holder and the upper end of bottom electrode holder, after top electrode or bottom electrode generation loss, can be easy to top electrode or bottom electrode are more changed; Ut socket is set on the acorn nut more stable by cavity.
Description of drawings
Fig. 1 is the structural representation of the projection welding device of this acorn nut.
Fig. 2 is the schematic diagram of ut socket.
Fig. 3 is the structural representation of top electrode.
Fig. 4 is the structural representation of bottom electrode.
Fig. 5 is the structural representation of acorn nut.
Among the figure, 1, upper electrode arm; 2, bottom arm; 3, top electrode holder; 4, bottom electrode holder; 5, top electrode; 6, bottom electrode; 6a, boss one; 6b, boss two; 7, ut socket; 7a, cavity; 8, sheet metal component; 9, acorn nut.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As Fig. 1, Fig. 2, shown in Figure 3, the projection welding device of this acorn nut 9, comprise upper electrode arm 1 and bottom arm 2, set firmly top electrode holder 3 on the upper electrode arm 1, the bottom of top electrode holder 3 is connected with top electrode 5, be installed with bottom electrode holder 4 on the bottom arm 2, the upper end of bottom electrode holder 4 is connected with bottom electrode 6, and top electrode 5 can be in over against the position with bottom electrode 6.Top electrode holder 3 and bottom electrode holder 4 are shaft-like, are located in respectively on upper electrode arm 1 and the bottom arm 2.The upper end of the bottom of top electrode holder 3 and bottom electrode holder 4 all has axial shrinkage pool, and top electrode 5 and bottom electrode 6 are shaft-like and can be plugged in the shrinkage pool of top electrode holder 3 and bottom electrode holder 4 by an end respectively.Shrinkage pool is a bellmouth, and an end of top electrode 5 and an end of bottom electrode 6 are all tapered.Bellmouth is more prone to mutual chucking.After top electrode 5 or bottom electrode 6 generation losses, can be easy to top electrode 5 or bottom electrode 6 are more changed.Have boss one 6a on the upper surface of bottom electrode 6, the upper surface of boss one 6a has boss two 6b.Boss one 6a is resisted against on the locating hole edge of sheet metal component 8, and boss two 6b upper end is resisted against on the acorn nut 9.Boss one 6a and the coaxial setting of boss two 6b, coaxial setting are more prone to processing.
As shown in Figure 4 and Figure 5, this device also comprises the ut socket 7 of be used to the to Connect Power utmost point 5 and an acorn nut 9.The lower end of ut socket 7 has axial cavity 7a, and cavity 7a can be set on the acorn nut 9.Ut socket 7 is set on the acorn nut 9 more stable by cavity 7a.The operation principle of this device is as follows: top electrode 5 is connected the two poles of the earth of power supply with bottom electrode 6, have locating hole on the sheet metal component 8, and sheet metal component 8 is connected on the bottom electrode 6, acorn nut 9 is placed on the top of locating hole on the panel beating again.Ut socket 7 is placed on the top of acorn nut 9, with top electrode 5 be placed on ut socket 7 on.Connect power supply again, the two poles of the earth of electric current arrive acorn nut 9 and sheet metal component 8 by top electrode 5 and bottom electrode 6 respectively, discharge between acorn nut 9 and the sheet metal component 8, the edge, lower surface of acorn nut 9 and the fusing of sheet metal component 8 contact positions, again ut socket 7 is applied downward pressure, 7 pairs of acorn nuts of ut socket 9 produce downward active force, and acorn nut 9 and sheet metal component 8 are welded together.This apparatus structure is simple, and production cost is low, adopts manual welding, and multiple vehicle versatility is good, in the face of the acorn nut 9 production efficiency height of small lot polytypic.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims (7)

1. the projection welding device of an acorn nut, comprise upper electrode arm (1) and bottom arm (2), it is characterized in that, set firmly top electrode holder (3) on the described upper electrode arm (1), the bottom of described top electrode holder (3) is connected with top electrode (5), be installed with bottom electrode holder (4) on the described bottom arm (2), the upper end of described bottom electrode holder (4) is connected with bottom electrode (6), described top electrode (5) can and bottom electrode (6) be in over against the position, this device also comprises the ut socket (7) of be used to the to Connect Power utmost point (5) and an acorn nut (9).
2. the projection welding device of a kind of acorn nut according to claim 1 is characterized in that, described top electrode holder (3) and bottom electrode holder (4) are shaft-like, is located in respectively on upper electrode arm (1) and the bottom arm (2).
3. the projection welding device of a kind of acorn nut according to claim 2, it is characterized in that, the upper end of the bottom of described top electrode holder (3) and bottom electrode holder (4) all has axial shrinkage pool, and described top electrode (5) and bottom electrode (6) are shaft-like and can be plugged in the shrinkage pool of top electrode holder (3) and bottom electrode holder (4) by an end respectively.
4. the projection welding device of a kind of acorn nut according to claim 3 is characterized in that, described shrinkage pool is a bellmouth, and an end of an end of described top electrode (5) and bottom electrode (6) is all tapered.
5. according to the projection welding device of claim 1 or 2 or 3 or 4 described a kind of acorn nuts, it is characterized in that have boss one (6a) on the upper surface of described bottom electrode (6), the upper surface of described boss one (6a) has boss two (6b).
6. the projection welding device of a kind of acorn nut according to claim 5 is characterized in that, described boss one (6a) and the coaxial setting of boss two (6b).
7. according to the projection welding device of claim 1 or 2 or 3 or 4 described a kind of acorn nuts, it is characterized in that the lower end of described ut socket (7) has axial cavity (7a), described cavity (7a) can be set on the acorn nut (9).
CN2010206704000U 2010-12-20 2010-12-20 Projection welding device for cap nut Expired - Fee Related CN201960263U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206704000U CN201960263U (en) 2010-12-20 2010-12-20 Projection welding device for cap nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206704000U CN201960263U (en) 2010-12-20 2010-12-20 Projection welding device for cap nut

Publications (1)

Publication Number Publication Date
CN201960263U true CN201960263U (en) 2011-09-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206704000U Expired - Fee Related CN201960263U (en) 2010-12-20 2010-12-20 Projection welding device for cap nut

Country Status (1)

Country Link
CN (1) CN201960263U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528346A (en) * 2012-01-08 2012-07-04 余胜东 Flexible electrode welding fixture for keeping position of workpiece
CN103737191A (en) * 2013-12-26 2014-04-23 芜湖中山科技有限公司 Sheet metal part projection welding structure and projection welding process thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528346A (en) * 2012-01-08 2012-07-04 余胜东 Flexible electrode welding fixture for keeping position of workpiece
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
CN103737191A (en) * 2013-12-26 2014-04-23 芜湖中山科技有限公司 Sheet metal part projection welding structure and projection welding process thereof
CN103737191B (en) * 2013-12-26 2017-03-22 芜湖中山科技有限公司 Projection welding process of sheet metal part projection welding structure

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110907

Termination date: 20131220