CN213672333U - Graphite boat for welding axial diode - Google Patents
Graphite boat for welding axial diode Download PDFInfo
- Publication number
- CN213672333U CN213672333U CN202022226879.5U CN202022226879U CN213672333U CN 213672333 U CN213672333 U CN 213672333U CN 202022226879 U CN202022226879 U CN 202022226879U CN 213672333 U CN213672333 U CN 213672333U
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- graphite boat
- welding
- lead
- counter bore
- welded
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Abstract
The utility model discloses an axial diode welding is with graphite boat, it includes lead wire graphite boat and pre-welding graphite boat, lead wire graphite boat back-off is placed on the pre-welding graphite boat, be provided with a plurality of pre-welding counter bores on the pre-welding graphite boat, the pre-welding counter bore includes toper counter bore and cylindricality counter bore, the toper counter bore is located the below of cylindricality counter bore. The utility model provides an axial is graphite boat for diode welding, it can avoid soldering lug skew or the inhomogeneous problem of tin on the lead wire.
Description
Technical Field
The utility model relates to a graphite boat is used in axial diode welding.
Background
At present, in the soldering process of the axial diode, in order to control the soldering tin amount and the soldering tin position, a soldering lug and a lead are soldered in advance and then are soldered with a chip for a second time, which is generally called a lead pre-soldering process. In the process, the soldering lug is generally placed on the table top of the lead and melted through a tunnel furnace, and the soldering lug is in a free state in the process, so that the problems of soldering lug deviation or uneven tin feeding are easy to occur.
Disclosure of Invention
The utility model aims to solve the technical problem that, overcome prior art not enough, provide an axial is graphite boat for diode welding, it can avoid the soldering lug skew or lead wire go up the inhomogeneous problem of tin.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides an axial diode welding is with graphite boat, it includes lead wire graphite boat and prewelding graphite boat, lead wire graphite boat back-off is placed on the prewelding graphite boat, be provided with a plurality of prewelding counter bores on the prewelding graphite boat, the prewelding counter bore includes toper counter bore and cylindricality counter bore, the toper counter bore is located the below of cylindricality counter bore.
Furthermore, a plurality of lead mounting holes are formed in the lead graphite boat and correspond to the cylindrical counter bores.
Furthermore, the lead graphite boat and the pre-welding graphite boat are respectively provided with corresponding positioning holes, and positioning pins are inserted into the positioning holes.
According to the technical scheme, the utility model discloses a lead wire graphite boat welds in going into the pre-welding counter bore on the pre-welding graphite boat with the lead wire back-off, and the pre-welding counter bore comprises toper counter bore and cylindricality counter bore, and toper counter bore carries on spacing moulding to the soldering lug, and cylindricality counter bore carries on spacingly to the lead wire simultaneously, and it is more even to go up the tin, and the welding effect is better.
Drawings
FIG. 1 is a front view of a graphite boat for welding an axial diode according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the lead graphite boat and the pre-welded graphite boat of the present invention;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a state diagram of the soldering lug of the present invention before soldering;
fig. 5 is a state diagram of the soldering lug of the present invention after welding.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 to 5, the graphite boat for axial diode welding comprises a lead graphite boat 1 and a pre-welded graphite boat 2, wherein the lead graphite boat 1 is placed on the pre-welded graphite boat 2 in an inverted manner. The pre-welding graphite boat 2 is provided with a plurality of pre-welding counter bores, each pre-welding counter bore comprises a conical counter bore 21 and a cylindrical counter bore 22, the conical counter bores 21 are located below the cylindrical counter bores 22, and the conical counter bores 21 are used for placing soldering lugs 4 and positioning, limiting and shaping the soldering lugs 4 during welding. The cylindrical counterbore 22 serves to limit the lead 5.
As shown in fig. 2, a plurality of lead mounting holes 11 are formed in the lead graphite boat 1, the lead mounting holes 11 correspond to the cylindrical counter bores 22, the leads 5 are previously loaded into the lead mounting holes 11, and the lead graphite boat 1 loaded with the leads 5 is turned over on the pre-welded graphite boat 2 during welding.
As shown in fig. 3, four positioning holes 3 are formed in the lead graphite boat 1, four positioning holes 3 are correspondingly formed in the pre-welded graphite boat 2, positioning pins are respectively inserted into the positioning holes 3 after the lead graphite boat 1 is reversely buckled on the pre-welded graphite boat 2, and the lead graphite boat 1 and the pre-welded graphite boat 2 are limited to prevent displacement between the lead graphite boat 1 and the pre-welded graphite boat 2.
During welding, firstly, the soldering lug 4 is placed in the conical counter bore 21, then the lead graphite boat 1 with the lead 5 is buckled on the pre-welded graphite boat 2 in an inverted mode, the lead 5 falls into the cylindrical counter bore 22, the positioning pin is inserted, the graphite boat is placed into a tunnel furnace for welding, and the soldering lug 4 is melted and then can be concentrated on the table surface of the lead 5 to form a good water-drop-shaped structure.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. The utility model provides an axial is graphite boat for diode welding which characterized in that: the lead graphite boat comprises a lead graphite boat (1) and a pre-welded graphite boat (2), wherein the lead graphite boat (1) is placed on the pre-welded graphite boat (2) in a back-off mode, a plurality of pre-welded counter bores are formed in the pre-welded graphite boat (2), each pre-welded counter bore comprises a conical counter bore (21) and a cylindrical counter bore (22), and the conical counter bores (21) are located below the cylindrical counter bores (22).
2. The graphite boat for welding an axial diode according to claim 1, wherein: a plurality of lead mounting holes (11) are formed in the lead graphite boat (1), and the lead mounting holes (11) correspond to the cylindrical counter bores (22).
3. The graphite boat for welding an axial diode according to claim 1, wherein: the lead graphite boat (1) and the pre-welded graphite boat (2) are respectively provided with a positioning hole (3) which correspond to each other, and a positioning pin is inserted into the positioning hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022226879.5U CN213672333U (en) | 2020-10-09 | 2020-10-09 | Graphite boat for welding axial diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022226879.5U CN213672333U (en) | 2020-10-09 | 2020-10-09 | Graphite boat for welding axial diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213672333U true CN213672333U (en) | 2021-07-13 |
Family
ID=76752632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022226879.5U Active CN213672333U (en) | 2020-10-09 | 2020-10-09 | Graphite boat for welding axial diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213672333U (en) |
-
2020
- 2020-10-09 CN CN202022226879.5U patent/CN213672333U/en active Active
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