CN201579561U - Graphite boat for crystal particle welding - Google Patents
Graphite boat for crystal particle welding Download PDFInfo
- Publication number
- CN201579561U CN201579561U CN 200920257576 CN200920257576U CN201579561U CN 201579561 U CN201579561 U CN 201579561U CN 200920257576 CN200920257576 CN 200920257576 CN 200920257576 U CN200920257576 U CN 200920257576U CN 201579561 U CN201579561 U CN 201579561U
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- CN
- China
- Prior art keywords
- graphite boat
- fixed block
- cover plate
- portable plate
- strip boss
- 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
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Abstract
The utility model relates to a graphite boat for crystal particle welding, comprising a movable plate and a fixed block, wherein the fixed block is provided with a U-shaped guide groove; the edge of the movable plate, parallel to the strip-shaped convex step thereof, is positioned in the U-shaped guide groove of the fixed block; the fixed block and the movable plate are connected by at least one pair of oriented pins and long round holes; and a horizontal space which leads the movable plate (2) to move along the direction of the strip-shaped convex step (4) is left between the oriented pins (7) and the long round holes (8). The graphite boat overcomes the problem of deviation of crystal particles of the graphite boat caused by the expansion of a lead frame, improves the accuracy of crystal particle positioning, reduces the mass of the graphite boat, is beneficial to transferring heat and gas and improves the operating efficiency of a welding furnace.
Description
Technical field
The utility model relates to a kind of graphite boat, is specifically related to a kind of graphite boat (also claiming " graphite ship ") that is used for the crystal grain welding.
Background technology
Diode is the electronic device of using always.Existing diode crystal particle is when encapsulation, and graphite boat is adopted in welding.On the one hand, existing graphite boat design is often considered based on welding product size, when carrying out the diode crystal particle welding, fail to pay attention to the orientation problem of interior diode crystal particle of graphite boat and lead frame, graphite boat only solves by detent, but, because the lead frame material is generally copper, and the graphite boat material is a graphite, these two kinds of materials coefficient of expansion at high temperature is different, therefore must reserve certain expansion space in detent, this can cause crystal grain to be difficult to accurate location in welding process, diode crystal particle and lead frame off normal problem occur.On the other hand, existing graphite boat design is often considered based on welding product size, is failed to take into account graphite boat heat utilization ratio problem.Because the graphite boat quality is big, heat can not effectively be delivered to the diode crystal particle region.Therefore, how to research and develop positioning accuracy and heat utilization ratio that a kind of graphite boat improves diode crystal particle, just become the direction that those skilled in the art make great efforts.
Summary of the invention
The invention provides a kind of graphite boat that is used for the crystal grain welding, its objective is to solve existing graphite boat crystal grain positioning accuracy difference and the low problem of heat utilization ratio.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of graphite boat that is used for the crystal grain welding comprises cover plate, at least two portable plates and two fixed blocks.
Described at least two portable plates are placed side by side, wherein the upper surface of each portable plate is provided with at least one strip boss rank, be provided with the detent that at least one is used to place lead frame head and crystal grain in these strip boss rank, this portable plate upper surface is positioned at strip boss rank one example and is provided with the fixing pin that is used for fixing lead frame.
Has " U " type gathering sill on the described fixed block, the edge parallel with its strip boss rank is positioned at " U " type gathering sill of described fixed block on the described portable plate, be connected with slotted hole by at least one pair of directed pin between this fixed block and the described portable plate, leave the horizontal space that moves along its strip boss rank direction for portable plate between this orientation pin and the slotted hole.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described cover plate has been provided with the directed pin of cover plate at its two ends, on the described portable plate therewith the directed pin of cover plate corresponding position have microscler circular hole, the directed pin of this cover plate stretches in this microscler circular hole, and can move along this microscler circular hole.
2, in the such scheme, have pore in the described detent.
Design concept of the present utility model is: the utility model utilizes some portable plates to fix same lead frame; be provided with the orienting device of guaranteeing that portable plate moves along strip boss rank direction between portable plate and the fixed block; under the duty; because this lead frame and portable plate are fixed; lead frame expands when stretching under the high temperature; driving portable plate moves along strip boss rank direction; the diode crystal particle and the lead frame stretching motion that have guaranteed to be positioned at portable plate are synchronous; and reduced the headspace of detent in the portable plate; and the use fixed block has alleviated quality.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, by the fixing same lead frame of some portable plates, portable plate can move along specific direction at fixed block, has overcome existing graphite boat because the crystal grain off normal problem that lead frame expands and brings has improved the crystal grain locating accuracy greatly.
2, the utility model adopts fixed block, makes to be air layer below the portable plate, reduces the quality of graphite boat and helps heat and the transmission of gas, reaches and effectively utilizes heat, reduces the effect of furnace tube temperature, has improved the soldering furnace operational efficiency.
Description of drawings
Accompanying drawing 1 is looked perspective view for the utility model portable plate and fixed block master;
Accompanying drawing 2 is Fig. 1 left view;
Accompanying drawing 3 is the utility model cover plate front view;
Accompanying drawing 4 is Fig. 3 left view.
In the above accompanying drawing: 1, cover plate; 2, portable plate; 3, fixed block; 4, strip boss rank; 5, detent; 6, fixing pin; 7, directed pin; 8, slotted hole; 9, the directed pin of cover plate; 10, microscler circular hole; 11, pore; 12, " U " type gathering sill; 13, cover plate pore.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: a kind of graphite boat that is used for the crystal grain welding
A kind of graphite boat that is used for crystal grain welding comprises cover plate 1, five portable plates 2 and two fixed blocks 3.
Described five portable plates 2 are placed side by side, and wherein the upper surface of each portable plate 2 is provided with three strip boss rank 4, are provided with the detent 5 that is used to place lead frame head and crystal grain in these strip boss rank 4, have pore 11 in this detent 5.Wherein two strip boss rank 4 are respectively equipped with a registration groove 5, and another strip boss rank 4 are provided with two registration grooves 5.These portable plate 2 upper surfaces are positioned at strip boss rank 4 one sides and are provided with the fixing pin 6 that is used for fixing lead frame.
Has " U " type gathering sill 12 on the described fixed block 3, the edge parallel with its strip boss rank 4 is positioned at " U " type gathering sill 12 of described fixed block 3 on the described portable plate 2, be connected with slotted hole 8 by at least one pair of directed pin 7 between this fixed block 3 and the described portable plate 2, leave the horizontal space that moves along its strip boss rank 4 directions for portable plate 2 between this orientation pin 7 and the slotted hole 8.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. a graphite boat that is used for the crystal grain welding comprises cover plate (1), it is characterized in that: also comprise at least two portable plates (2) and two fixed blocks (3);
Described at least two portable plates (2) are placed side by side, wherein the upper surface of each portable plate (2) is provided with at least one strip boss rank (4), these strip boss rank (4) are provided with at least one detent that is used to place lead frame head and crystal grain (5), and this portable plate (2) upper surface is positioned at strip boss rank (4) one sides and is provided with the fixing pin (6) that is used for fixing lead frame;
Has " U " type gathering sill (12) on the described fixed block (3), described portable plate (2) is gone up " U " type gathering sill (12) that the edge parallel with its strip boss rank (4) is positioned at described fixed block (3), be connected with slotted hole (8) by at least one pair of directed pin (7) between this fixed block (3) and the described portable plate (2), leave between this orientation pin (7) and the slotted hole (8) for the horizontal space of portable plate (2) along its strip boss rank (4) direction motion.
2. graphite boat according to claim 1, it is characterized in that: described cover plate (1) has been provided with the directed pin (9) of cover plate at its two ends, on the described portable plate therewith the directed pin (9) of cover plate corresponding position have microscler circular hole (10), the directed pin of this cover plate (9) stretches in this microscler circular hole (10), and can move along this microscler circular hole (10).
3. graphite boat according to claim 1 is characterized in that: have pore (11) in the described detent (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920257576 CN201579561U (en) | 2009-11-13 | 2009-11-13 | Graphite boat for crystal particle welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920257576 CN201579561U (en) | 2009-11-13 | 2009-11-13 | Graphite boat for crystal particle welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201579561U true CN201579561U (en) | 2010-09-15 |
Family
ID=42721555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920257576 Expired - Fee Related CN201579561U (en) | 2009-11-13 | 2009-11-13 | Graphite boat for crystal particle welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201579561U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214592A (en) * | 2011-04-01 | 2011-10-12 | 石金精密科技（深圳）有限公司 | Assembling method for graphite boat location column |
| CN102263050A (en) * | 2011-08-01 | 2011-11-30 | 苏州固锝电子股份有限公司 | Device for moving semiconductor crystalline grains on graphite boat |
| CN111188029A (en) * | 2020-03-11 | 2020-05-22 | 上海弘枫实业有限公司 | Multi-frame graphite boat |
| CN111958078A (en) * | 2020-09-27 | 2020-11-20 | 淄博晨启电子有限公司 | Welding process of high-reliability high-surge impact capability semiconductor protection device |
-
2009
- 2009-11-13 CN CN 200920257576 patent/CN201579561U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214592A (en) * | 2011-04-01 | 2011-10-12 | 石金精密科技（深圳）有限公司 | Assembling method for graphite boat location column |
| CN102263050A (en) * | 2011-08-01 | 2011-11-30 | 苏州固锝电子股份有限公司 | Device for moving semiconductor crystalline grains on graphite boat |
| CN102263050B (en) * | 2011-08-01 | 2013-05-01 | 苏州固锝电子股份有限公司 | Device for moving semiconductor crystalline grains on graphite boat |
| CN111188029A (en) * | 2020-03-11 | 2020-05-22 | 上海弘枫实业有限公司 | Multi-frame graphite boat |
| CN111958078A (en) * | 2020-09-27 | 2020-11-20 | 淄博晨启电子有限公司 | Welding process of high-reliability high-surge impact capability semiconductor protection device |
| CN111958078B (en) * | 2020-09-27 | 2021-08-27 | 淄博晨启电子有限公司 | Welding process of high-reliability high-surge impact capability semiconductor protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20171113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |