CN209056475U - A kind of DBC Module bond positioning fixture - Google Patents
A kind of DBC Module bond positioning fixture Download PDFInfo
- Publication number
- CN209056475U CN209056475U CN201822150800.8U CN201822150800U CN209056475U CN 209056475 U CN209056475 U CN 209056475U CN 201822150800 U CN201822150800 U CN 201822150800U CN 209056475 U CN209056475 U CN 209056475U
- Authority
- CN
- China
- Prior art keywords
- dbc
- positioning
- locating piece
- vacuum chamber
- gasket
- 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
Links
- 239000000758 substrate Substances 0.000 claims abstract description 31
- 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 claims abstract description 26
- 230000013011 mating Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
The utility model provides a kind of DBC Module bond positioning fixture, belongs to workpiece field of locating technology.It is unstable that it solves the problems, such as that existing DBC module is positioned by positioning fixture.This DBC Module bond positioning fixture, including pedestal and the positioning plate being fixedly connected with pedestal, the upper surface of the pedestal offers vacuum chamber, the lower surface of the pedestal offers the through-hole of connection vacuum chamber, the threaded hole of connection vacuum chamber is offered on positioning plate, DBC plate positioning component includes locating piece, the lower surface of locating piece has the interconnecting piece being threadedly coupled with threaded hole, the upper surface of locating piece is offered through interconnecting piece and the air flue that is connected to vacuum chamber, and the upper surface of locating piece is fixed with rectangular gasket.The substantially seamless gap in position that the DBC substrate of this structure is contacted with gasket, avoids vacuum chamber gas leakage, greatly improves the adsorption capacity to DBC substrate, improves the stability of DBC substrate positioning.
Description
Technical field
The utility model belongs to workpiece field of locating technology, is related to a kind of positioning fixture, especially a kind of DBC Module bond
Use positioning fixture.
Background technique
DBC module is to constitute the important component of IGBT module, and multiple DBC module connection combinations form IGBT module,
The muti-piece chip that DBC module generally comprises substrate and is disposed on the substrate is connected between chip and chip by bonding line, institute
First DBC module to be placed on positioning fixture and is positioned before bonding, it just can guarantee that DBC module does not occur when bonding in this way
It is mobile.
Currently, the positioning fixture for being traditionally used for positioning DBC module has generally comprised pedestal and positioning plate, have on pedestal
Vacuum chamber and the through-hole for being connected to vacuum chamber, positioning plate are fixed on one end of pedestal and close the open end of vacuum chamber, positioning plate
On offer the adsorption hole of connection vacuum chamber, in use, DBC module to be placed in the upper surface of positioning plate, DBC module and positioning
The upper surface of plate contacts and covers adsorption hole, and through-hole external air extractor carries out vacuum pumping, DBC module to vacuum chamber
The upper surface of positioning plate is attracted to by adsorption hole, since this absorption dynamics is limited, the DBC module in bonding process
It is easy that opposite sliding occurs with the upper surface of positioning plate, and is plane-plane contact, DBC module between DBC module and positioning plate
Lower surface and positioning plate upper surface between can not fit closely so that, the lower surface of DBC module and the upper surface of positioning plate
Between there are gas leakage gap, DBC module is unstable in the positioning of the upper surface of positioning plate, influences the bonding operation in later period.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of DBC Module bond use
Positioning fixture, the technical problem to be solved by the utility model is to how to improve the stability of DBC plate positioning.
The purpose of this utility model can be realized by the following technical scheme:
A kind of DBC Module bond positioning fixture, including pedestal and the positioning plate being fixedly connected with pedestal, the pedestal
Upper surface offers vacuum chamber, and the lower surface of the pedestal offers the through-hole of connection vacuum chamber, the lower surface of the positioning plate
It is bonded with the upper surface of pedestal, the threaded hole of connection vacuum chamber is offered on the positioning plate, which is characterized in that the locating clip
Tool further includes having the DBC plate positioning component connecting with threaded hole, and the DBC plate positioning component includes locating piece, the locating piece
Lower surface there is the interconnecting piece that is threadedly coupled with threaded hole, the upper surface of the locating piece offer through interconnecting piece and with it is true
The air flue of cavity connection, the upper surface of the locating piece are fixed with rectangular gasket, and the locating piece upper surface is located at
The position of gasket left and right sides is respectively and fixedly provided with positioning column.
In a kind of above-mentioned DBC Module bond positioning fixture, the gasket is bonded in locating piece by glue
Upper surface, the upper surface rounding off of the gasket.
In a kind of above-mentioned DBC Module bond positioning fixture, the upper surface of the positioning column has can be with DBC base
The mating positioning region of plate, the upper surface of the gasket are higher than the upper surface of positioning column.
In a kind of above-mentioned DBC Module bond positioning fixture, the threaded hole has several, and each threaded hole is equal
It is connected with the DBC plate positioning component.
In a kind of above-mentioned DBC Module bond positioning fixture, the through-hole have several, if several through-holes with
Dry threaded hole corresponds, and is respectively connected with gas-tpe fitting in each through-hole.
Compared with prior art, the DBC Module bond of the utility model has the advantage that vacuum chamber is taken out with positioning fixture
After vacuum, DBC substrate is adsorbed downwards by air flue, the DBC substrate power downward by one, so that under DBC substrate
Surface and the upper surface of gasket fit closely, and the substantially seamless gap in the position that DBC substrate is contacted with gasket avoids vacuum chamber from leaking
Gas greatly improves the adsorption capacity to DBC substrate compared with prior art, improves the stability of DBC substrate positioning.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model.
Fig. 2 is the enlarged structure schematic diagram of A in Fig. 1.
Fig. 3 is the top view of the locating piece of the utility model.
In figure, 1, pedestal；11, vacuum chamber；12, through-hole；2, positioning plate；21, threaded hole；3, DBC plate positioning component；31,
Locating piece；31a, interconnecting piece；31b, air flue；32, gasket；33, positioning column；33a, positioning region；4, gas-tpe fitting；5, DBC base
Plate.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, Figure 2 and Figure 3, this DBC Module bond positioning fixture, including pedestal 1 and be fixedly connected with pedestal 1
Positioning plate 2, the upper surface of the pedestal 1 offers vacuum chamber 11, and the lower surface of the pedestal 1 offers connection vacuum chamber 11
Through-hole 12, the lower surface of the positioning plate 2 is bonded with the upper surface of pedestal 1, offers connection vacuum chamber on the positioning plate 2
11 threaded hole 21, which is characterized in that the positioning fixture further includes having the DBC plate positioning component 3 connecting with threaded hole 21, institute
Stating DBC plate positioning component 3 includes locating piece 31, and the lower surface of the locating piece 31 has the connection being threadedly coupled with threaded hole 21
Portion 31a, the upper surface of the locating piece 31 is offered through interconnecting piece 31a and the air flue 31b that is connected to vacuum chamber 11, described fixed
The upper surface of position block 31 is fixed with rectangular gasket 32, and 31 upper surface of locating piece is located at 32 left and right sides of gasket
Position is respectively and fixedly provided with positioning column 33.
In use, having spliced eye that can be mating with positioning column 33 at the outer edge of DBC substrate 5, DBC is first put
Module is inserted into the upper end of positioning column 33 in the spliced eye on DBC substrate 5, positioning column 33 to DBC substrate 5 carry out front and back,
Left and right limit avoids DBC module appearance position mobile, and guarantees that position of the DBC module on positioning plate 2 is put accurately, realizes
The quick positioning of DBC module；The upper surface of gasket 32 and the following table face contact of DBC substrate 5, then the external pumping of through-hole 12 fills
It sets, air extractor carries out vacuumize process to vacuum chamber 11 by through-hole 12, will by air flue 31b after vacuum chamber 11 vacuumizes
DBC substrate 5 adsorbs downwards, the power downward by one of DBC substrate 5, so that the lower surface of DBC substrate 5 and gasket 32
Upper surface fit closely, the substantially seamless gap in the position that DBC substrate 5 is contacted with gasket 32 avoids 11 gas leakage of vacuum chamber, and existing
There is technology to compare the adsorption capacity greatly improved to DBC substrate 5, improves the stability of the positioning of DBC substrate 5.
As shown in Fig. 2, the gasket 32 is bonded in the upper surface of locating piece 31 by glue, the gasket 32 it is upper
End face rounding off.The structure to be conducive to gasket 32 and DBC base between gasket 32 and DBC substrate 5 for line face contact
Plate 5 fits closely, and avoids 11 gas leakage of vacuum chamber.
As shown in Fig. 2, the upper surface of the positioning column 33 has positioning region 33a that can be mating with DBC substrate 5,
The upper surface of the gasket 32 is higher than the upper surface of positioning column 33.In the structure, when DBC substrate and positioning region 33a are completed to insert
After connecing cooperation, the upper surface of gasket 32 mutually reclines with the lower surface of DBC substrate 5, at this time the lower surface of DBC substrate 5 and positioning
There are gaps between the upper surface of column 33, in this way after vacuum chamber 11 is evacuated, DBC substrate 5 by downward adsorption capacity, into
And DBC substrate 5 squeeze gasket 32, the gap can allow gasket 32 occur a certain amount of deformation make gasket 32 with
The lower surface of DBC substrate 5 fits closely.
As shown in Figure 1, the threaded hole 21 has several, each threaded hole 21 is respectively connected with the DBC plate positioning
Component 3.The structure makes have multiple DBC plate positioning components 3 on one piece of positioning plate 2, can determine simultaneously muti-piece DBC module
Position.
As shown in Figure 1, the through-hole 12 has several, several through-holes 12 and several threaded holes 21 are corresponded,
Gas-tpe fitting 4 is respectively connected in each through-hole 12.Gas-tpe fitting 4 enables vacuum chamber 11 by tracheae external air extractor
Vacuum pumping can be completed in a relatively short period of time, realize the quick positioning of DBC substrate 5.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. a kind of DBC Module bond positioning fixture, including pedestal (1) and the positioning plate (2) being fixedly connected with pedestal (1), institute
The upper surface for stating pedestal (1) offers vacuum chamber (11), and the lower surface of the pedestal (1) offers the logical of connection vacuum chamber (11)
The lower surface in hole (12), the positioning plate (2) is bonded with the upper surface of pedestal (1), and it is true that connection is offered on the positioning plate (2)
The threaded hole (21) of cavity (11), which is characterized in that the positioning fixture further includes having the DBC plate connecting with threaded hole (21) fixed
Hyte part (3), the DBC plate positioning component (3) include locating piece (31), and the lower surface of the locating piece (31) has and screw thread
Hole (21) be threadedly coupled interconnecting piece (31a), the upper surface of the locating piece (31) offer through interconnecting piece (31a) and with it is true
The air flue (31b) of cavity (11) connection, the upper surface of the locating piece (31) is fixed with rectangular gasket (32), described
The position that locating piece (31) upper surface is located at gasket (32) left and right sides is respectively and fixedly provided with positioning column (33).
2. a kind of DBC Module bond positioning fixture according to claim 1, which is characterized in that the gasket (32)
The upper surface of locating piece (31), the upper surface rounding off of the gasket (32) are bonded in by glue.
3. a kind of DBC Module bond positioning fixture according to claim 1, which is characterized in that the positioning column (33)
Upper surface have can be mating with DBC substrate positioning region (33a), the upper surface of the gasket (32) is higher than positioning
The upper surface of column (33).
4. a kind of DBC Module bond positioning fixture according to claim 1, which is characterized in that the threaded hole (21)
With several, each threaded hole (21) is respectively connected with the DBC plate positioning component (3).
5. a kind of DBC Module bond positioning fixture according to claim 4, which is characterized in that through-hole (12) tool
There are several, several through-holes (12) and several threaded holes (21) correspond, and are respectively connected with tracheae in each through-hole (12)
Connector (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822150800.8U CN209056475U (en) | 2018-12-20 | 2018-12-20 | A kind of DBC Module bond positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822150800.8U CN209056475U (en) | 2018-12-20 | 2018-12-20 | A kind of DBC Module bond positioning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209056475U true CN209056475U (en) | 2019-07-02 |
Family
ID=67055228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822150800.8U Expired - Fee Related CN209056475U (en) | 2018-12-20 | 2018-12-20 | A kind of DBC Module bond positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209056475U (en) |
-
2018
- 2018-12-20 CN CN201822150800.8U patent/CN209056475U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190702 Termination date: 20191220 |