CN115692262A - Metal tube shell lead sintering frock - Google Patents
Metal tube shell lead sintering frock Download PDFInfo
- Publication number
- CN115692262A CN115692262A CN202211340665.8A CN202211340665A CN115692262A CN 115692262 A CN115692262 A CN 115692262A CN 202211340665 A CN202211340665 A CN 202211340665A CN 115692262 A CN115692262 A CN 115692262A
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- graphite
- lead
- hole
- positioning
- metal tube
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- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
A metal tube shell lead sintering tool comprises a graphite base, a graphite positioning seat, a graphite positioning column and a graphite pressing block; the upper end of the graphite base is provided with a first concave platform, the upper end of the graphite positioning seat is provided with a second concave platform for clamping the metal tube shell, and the second concave platform is provided with a through hole; the lower end of the graphite positioning seat is clamped in the first concave table, the graphite positioning column is inserted in the through hole, and a positioning hole of the lead is formed in the center of the graphite positioning column; a graphite pressing block for pressing the metal tube shell downwards is arranged above the graphite positioning seat, and a blind hole for limiting the position of the lead is formed in the lower end of the graphite pressing block. According to the invention, the graphite positioning seat and the graphite positioning column are in clearance fit, and the positioning hole and the blind hole for limiting the position of the lead are in clearance fit with the lead, so that the problem that the lead is deformed due to transverse stress in the sintering process because the thermal expansion coefficients of the metal shell and the graphite are different and the thermal displacement generated by thermal expansion in the sintering process is different is solved.
Description
Technical Field
The invention relates to the technical field of manufacturing of electronic equipment packaging shells, in particular to a metal tube shell lead sintering tool.
Background
The closest prior art to the present invention is "a metal package casing sintering mold for controlling the wire height consistency", CN202067780U ". The sintering mold comprises a bottom mold (1), a cover plate (2) is arranged on the bottom mold (1) in a matching mode, and lead holes (3) with the same depth are formed in the cover plate (2). The positions of the lead and the bottom plate are controlled by the bottom die during sintering, and the height of the lead is controlled by the depth of the lead hole on the cover plate, so that the height and size precision of the lead are ensured. However, due to the different thermal expansion coefficients of the metal shell and the graphite, the thermal displacement generated by thermal expansion in the sintering process is different, so that the lead is deformed under the transverse stress in the sintering process, and the demoulding is difficult to realize; secondly, the molten glass insulator is easy to adhere to the graphite mould in the sintering process, thereby causing product rejection.
Disclosure of Invention
The invention provides a metal tube shell lead sintering tool, which overcomes the defects of the prior art.
The technical scheme adopted by the invention is as follows: a metal tube shell lead sintering tool comprises a graphite base, a graphite positioning seat, a graphite positioning column and a graphite pressing block; the upper end of the graphite base is provided with a first concave platform, the upper end of the graphite positioning seat is provided with a second concave platform for clamping the metal tube shell, and the second concave platform is provided with a through hole; the lower end of the graphite positioning seat is clamped in the first concave table, the graphite positioning column is inserted in the through hole, and a positioning hole of a lead is formed in the center of the graphite positioning column; a graphite pressing block for pressing the metal tube shell downwards is arranged above the graphite positioning seat, and a blind hole for limiting the position of the lead is formed in the lower end of the graphite pressing block.
The top end of the positioning hole is provided with a first bell mouth, and the lower end of the blind hole is provided with a second bell mouth.
The inner diameters of the positioning hole and the blind hole are slightly larger than the outer diameter of the lead, and the outer diameter of the graphite positioning column is slightly smaller than the inner diameter of the through hole.
And a sewage discharge groove communicated with the second concave table is formed in the upper end of the graphite base.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the graphite positioning seat and the graphite positioning column are in clearance fit, and the positioning hole and the blind hole for limiting the lead position are in clearance fit with the lead, so that the graphite positioning column and the lead have certain transverse displacement, thereby solving the problems that the lead is deformed due to transverse stress in the sintering process because the thermal expansion coefficients of the metal shell and the graphite are different and the thermal displacement generated by thermal expansion in the sintering process is different.
2. According to the invention, the horn mouths are arranged at the positioning hole for limiting the lead position and one end of the blind hole adjacent to the glass insulator, so that the glass insulator is prevented from contacting with the graphite tool, and the problem that the glass insulator is adhered with graphite during sintering is avoided.
3. The graphite pressing block is arranged, so that the deviation of the lead can be limited again, impurities can be prevented from entering the molten glass insulator in the sintering process, and the insulating property is ensured.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1 to 3 and the embodiments.
A metal tube shell lead sintering tool comprises a graphite base 1, a graphite positioning seat 2, a graphite positioning column 3 and a graphite pressing block 4; the upper end of the graphite base 1 is provided with a first concave platform 1-1, the upper end of the graphite positioning seat 2 is provided with a second concave platform 2-1 for clamping the metal tube shell 5, and the second concave platform 2-1 is provided with a through hole 2-2; the lower end of the graphite positioning seat 2 is clamped in the first concave table 1-1, the graphite positioning column 3 is inserted in the through hole 2-2, and a positioning hole 3-1 of a lead 6 is formed in the center of the graphite positioning column 3; a graphite pressing block 4 for pressing the metal tube shell 5 downwards is arranged above the graphite positioning seat 2, and a blind hole 4-1 for limiting the position of the lead 6 is formed in the lower end of the graphite pressing block 4.
When the sintering furnace is used, one end of a sintering lead of the metal tube shell 5 is clamped in the second concave station 2-1, the lead 6 penetrates through a sintering hole in the metal tube shell 5 from top to bottom and then is inserted into the positioning hole 3-1, then the glass insulator 7 is sleeved on the lead 6 and is embedded into the sintering hole, finally the graphite pressing block 4 is pressed at the upper end of the metal tube shell 5, and the lead 6 is correspondingly inserted into the blind hole 4-1 and then is sent into the sintering furnace for sintering. The graphite positioning column 3 and the graphite pressing block 4 are used for limiting the deviation of the lead, so that the sintered product lead is basically free of deviation.
The method aims to solve the problem that the lead is deformed due to different thermal displacements caused by different thermal expansion coefficients of the metal tube shell and graphite in the sintering process. The inner diameters of the positioning hole 3-1 and the blind hole 4-1 are slightly larger than the outer diameter of the lead 6. The outer diameter of the graphite positioning column 3 is slightly smaller than the inner diameter of the through hole 2-2. The graphite positioning column 3 and the lead 6 have certain displacement, and the lead 6 is prevented from deforming under stress due to different thermal displacements in the sintering process.
In order to avoid the adhesion of the molten glass insulator to the graphite positioning post 3 and the graphite compact 4 during sintering. The top end of the positioning hole 3-1 is provided with a first bell mouth 3-2, and the lower end of the blind hole 4-1 is provided with a second bell mouth 4-2. Prevent glass insulator 7 and graphite reference column 3 and graphite briquetting 4 contact through setting up the horn mouth to avoid the problem of glass insulator and graphite reference column 3 and the adhesion of graphite briquetting 4 when the sintering.
In order to facilitate cleaning of dirt in the second concave station 2-1, a dirt discharge groove 1-2 communicated with the second concave station 2-1 is formed in the upper end of the graphite base 1.
The above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, so that the equivalent changes made by the contents of the claims of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a metal cartridge lead wire sintering frock which characterized in that: comprises a graphite base (1), a graphite positioning seat (2), a graphite positioning column (3) and a graphite pressing block (4); the upper end of the graphite base (1) is provided with a first concave table (1-1), the upper end of the graphite positioning seat (2) is provided with a second concave table (2-1) for clamping a metal tube shell (5), and the second concave table (2-1) is provided with a through hole (2-2); the lower end of the graphite positioning seat (2) is clamped in the first concave table (1-1), the graphite positioning column (3) is inserted in the through hole (2-2), and the center of the graphite positioning column (3) is provided with a positioning hole (3-1) of the lead (6); a graphite pressing block (4) for pressing the metal tube shell (5) is arranged above the graphite positioning seat (2), and a blind hole (4-1) for limiting the position of the lead (6) is formed in the lower end of the graphite pressing block (4).
2. The metal case lead sintering tool according to claim 1, wherein: the top end of the positioning hole (3-1) is provided with a first bell mouth (3-2), and the lower end of the blind hole (4-1) is provided with a second bell mouth (4-2).
3. The metal case lead sintering tool according to claim 1 or 2, wherein: the inner diameters of the positioning hole (3-1) and the blind hole (4-1) are slightly larger than the outer diameter of the lead (6), and the outer diameter of the graphite positioning column (3) is slightly smaller than the inner diameter of the through hole (2-2).
4. The metal case lead sintering tool according to claim 3, wherein: and a sewage draining groove (1-2) communicated with the second concave table (2-1) is formed in the upper end of the graphite base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340665.8A CN115692262A (en) | 2022-10-29 | 2022-10-29 | Metal tube shell lead sintering frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340665.8A CN115692262A (en) | 2022-10-29 | 2022-10-29 | Metal tube shell lead sintering frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115692262A true CN115692262A (en) | 2023-02-03 |
Family
ID=85046994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211340665.8A Pending CN115692262A (en) | 2022-10-29 | 2022-10-29 | Metal tube shell lead sintering frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115692262A (en) |
-
2022
- 2022-10-29 CN CN202211340665.8A patent/CN115692262A/en active Pending
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