CN202240142U - Special fixture for spot welding of signal terminal of power module - Google Patents
Special fixture for spot welding of signal terminal of power module Download PDFInfo
- Publication number
- CN202240142U CN202240142U CN2011202297334U CN201120229733U CN202240142U CN 202240142 U CN202240142 U CN 202240142U CN 2011202297334 U CN2011202297334 U CN 2011202297334U CN 201120229733 U CN201120229733 U CN 201120229733U CN 202240142 U CN202240142 U CN 202240142U
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- CN
- China
- Prior art keywords
- signal terminal
- positioning seat
- special fixture
- spot welding
- compression leg
- 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 - Lifetime
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Abstract
The utility model relates to a special fixture for spot welding of a signal terminal of a power module. The special fixture comprises an upper pressing column, a lower positioning seat and a moving member, wherein the upper pressing column is mounted on a movable member of the moving member and electrically connected with a positive electrode; a V-shaped slot is arranged at the upper part of the lower positioning seat; and the lower positioning seat is electrically connected with a negative electrode. According to the utility model, an inner lead on the power module is positioned through the V-shaped slot at the upper part of the lower positioning seat, and the signal terminal is fixedly connected with the inner lead of the power module. The special fixture provided by the utility model is environment-friendly and can be used for improving the welding quality and production efficiency.
Description
Technical field
The utility model relates to a kind of spot welding special fixture of power model signal terminal, belongs to power model manufacturing technology field.
Background technology
The inner lead size of power model is less and be circular; Therefore being connected of the inner lead of signal terminal and power model is to realize through the manual welding mode of sending welding wire and flatiron to heat, but there is following defective in this welding procedure on the power device package application:
1, owing to is after melting through welding wire signal terminal to be welded on the inner lead; Therefore can produce welding stress at the layer place that inner lead is connected with signal terminal; Therefore and the working environment of power electronic device circulates at-40 ℃ to 125 ℃, after after a while, finally can cause coming off that inner lead is connected with signal terminal; And produce the solder joint fatigue phenomenon, thereby have influence on the life-span of overall power device.
2, weld owing to adopting welding wire to add flatiron, and welding wire is leaded bonding wire material, thus environment there is certain pollution, thus make the leaded not environmental protection of power model that encapsulates simultaneously.
3, owing to adopt manual welding, welding quality is unstable, and labour intensity is big, and production efficiency is low.
Summary of the invention
The purpose of the utility model provides a kind of environmental protection, can improve the spot welding special fixture of the power model signal terminal of welding quality and production efficiency.
The utility model is that the technical scheme that achieves the above object is: a kind of spot welding special fixture of power model signal terminal; It is characterized in that: comprise compression leg, following positioning seat and moving member; Last compression leg is installed on the movable part of moving member; And last compression leg is electrically connected with positive electrode, and the top of following positioning seat is provided with V-shaped groove, and following positioning seat is electrically connected with negative electrode.
The utility model adopts goes up compression leg and following positioning seat; Last compression leg is connected with moving member, go up compression leg through the moving member drive and move up and down, and the top of positioning seat is provided with V-shaped groove down; Can the inner lead on the power model be positioned; Put to the inner lead top when signal terminal, go up compression leg through moving member control and move down and signal terminal is pressed on the inner lead, because last compression leg is electrically connected with positive electrode and negative electrode respectively with following positioning seat; Short circuit makes the mash welder discharge when between positive and negative electrode, thereby accomplishes spot welding.The utility model compresses inner lead and signal terminal location through last compression leg and following positioning seat, and accurate positioning need not welding wire; So power model is not leaded, and can environmental pollution, environmental protection; Especially can reduce inner lead is connected the layer place with signal terminal welding stress; So can improve welding quality stable, reduce to alleviate operator's labour intensity, enhance productivity.
Description of drawings
Below in conjunction with accompanying drawing the embodiment of the utility model is made further detailed description.
Fig. 1 is the structural representation of the utility model.
Wherein: 1-moving member, the last compression leg of 2-, 3-signal terminal, 4-inner lead, positioning seat under the 5-.
The specific embodiment
See shown in Figure 1ly, the spot welding special fixture of the utility model power model signal terminal comprises compression leg 2, down positioning seat 5 and moving member 1; Last compression leg 2 is installed on the movable part of moving member 1; The moving member 1 of the utility model can be cylinder or oil cylinder or oil gas cylinder, and movable part is the piston of cylinder or oil cylinder or oil gas cylinder, goes up compression leg 2 through moving member 1 control and moves up and down; And the bottom of going up compression leg 2 is the awl column; Last compression leg 2 can adopt copper material to process, and last compression leg 2 is electrically connected with positive electrode, through positive electrode electric current is led to compression leg 2.See shown in Figure 1; The top of the following positioning seat 5 of the utility model is provided with V-shaped groove, can the inner lead 4 of power model be installed in this V-shaped groove, and following positioning seat 5 is fixed on the workbench; This time positioning seat 5 adopts copper material to process; Following positioning seat 5 is electrically connected with negative electrode, through negative electrode electric current is led to positioning seat 5 down, and the special fixture of the utility model is installed on the welding machine.
See shown in Figure 1ly, the utility model when work, earlier the inner lead 4 of power model is put to the V-type groove of positioning seat 5 down; Again signal terminal 3 is kept flat to inner lead 4 tops; Start moving member 1 and control and go up compression leg and move for 2 times signal terminal 3 is pressed on the inner lead 4, because positive electrode and negative electricity intereelectrode short-circuit, mash welder discharges; Utilize electric current to weld, accomplish spot welding through the contact-making surface of joint and the resistance heat of adjacent domain generation; Start moving member 1 control then and go up compression leg 2 risings, return back to normality owing to open circuit between positive electrode and negative electrode, this moment, inner lead 4 formed a solder joint on signal terminal 3, signal terminal 3 was fixedly connected on the inner lead 4 of power model.
Claims (3)
1. the spot welding special fixture of a power model signal terminal; It is characterized in that: comprise compression leg (2), following positioning seat (5) and moving member (1); Last compression leg (2) is installed on the movable part of moving member (1); And last compression leg (2) is electrically connected with positive electrode, and the top of following positioning seat (5) is provided with V-shaped groove, and following positioning seat (5) is electrically connected with negative electrode.
2. the spot welding special fixture of power model signal terminal according to claim 1 is characterized in that: said bottom of going up compression leg (2) is the awl column.
3. the spot welding special fixture of power model signal terminal according to claim 1 is characterized in that: described moving member (1) is cylinder or oil cylinder or oil gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202297334U CN202240142U (en) | 2011-06-30 | 2011-06-30 | Special fixture for spot welding of signal terminal of power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202297334U CN202240142U (en) | 2011-06-30 | 2011-06-30 | Special fixture for spot welding of signal terminal of power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202240142U true CN202240142U (en) | 2012-05-30 |
Family
ID=46101443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202297334U Expired - Lifetime CN202240142U (en) | 2011-06-30 | 2011-06-30 | Special fixture for spot welding of signal terminal of power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202240142U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262897A (en) * | 2017-05-31 | 2017-10-20 | 贵州天义电器有限责任公司 | A kind of self-correcting combination electrode and its application method |
| CN108406070A (en) * | 2018-05-04 | 2018-08-17 | 师海巍 | A kind of reinforcing bar butt-weld device |
| CN110814495A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Spot welding method for resistance element |
| CN110814494A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Resistance electric welding machine |
-
2011
- 2011-06-30 CN CN2011202297334U patent/CN202240142U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262897A (en) * | 2017-05-31 | 2017-10-20 | 贵州天义电器有限责任公司 | A kind of self-correcting combination electrode and its application method |
| CN108406070A (en) * | 2018-05-04 | 2018-08-17 | 师海巍 | A kind of reinforcing bar butt-weld device |
| CN110814495A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Spot welding method for resistance element |
| CN110814494A (en) * | 2019-11-14 | 2020-02-21 | 高力 | Resistance electric welding machine |
| CN110814495B (en) * | 2019-11-14 | 2021-12-07 | 中科同帜半导体(江苏)有限公司 | Spot welding method for resistance element |
| CN110814494B (en) * | 2019-11-14 | 2021-12-21 | 浙江腾洋电器有限公司 | Resistance electric welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213022 No. 18 middle Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: MACMIC SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 213022 No. 18 middle Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee before: MACMIC SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |