Disc-shaped electronic gun filament firing tool

Abstract

The utility model discloses a kind of disc incense type electron gun filament firing frock, it is related to electron gun filament firing technical field, including ceramic frock table, disc incense type customization groove and electric heating base, the inside of the ceramic frock table is provided with disc incense type customization groove, and disc incense type customization groove bottom end is provided with disc and is set in the tungsten wire of disc incense type customization groove inside, the outside of the ceramic frock table is provided with electric heating base, and the side of electric heating base is installed with external connection pipe, the inside of the external connection pipe is provided with solenoid valve, the top of electric heating base is installed with external connection block, and the top of external connection block is provided with vacuum cover body, the inside of the external connection block is provided with sealing assembly for sealing the position of vacuum cover body, the device has the ceramic material of ceramic frock table frock adoption, heating process will not cause tungsten wire and ceramic frock adhesion one piece, and ceramic expansion coefficient is small, will not extrude tungsten wire in it, and then guarantee the integrity of firing.

Description

Technical Field

[0001] This utility model relates to the field of electron gun filament firing technology, specifically a coil-shaped electron gun filament firing tool. Background Technology

[0002] Currently, when making coil-shaped electron gun filaments, the material used for the filament is tungsten wire. It is usually wound by hand, with the tungsten wire and molybdenum wire made together. The diameter of the molybdenum wire is used to ensure the pitch during winding. Then, it is annealed and shaped in a vacuum furnace. After shaping, the filament is corroded with acid to remove the molybdenum. Finally, it is cleaned, dehydrated with alcohol, and dried.

[0003] However, the existing coil-type electron gun filament burning fixture has the following problems during use: the traditional operation requires certain skills from the operator to ensure that the filaments do not touch each other and to perform high-temperature annealing and shaping. After shaping, the perpendicularity of the two leads of the filament needs to be manually adjusted to ensure the spacing. Since the filament is made of tungsten wire, the material becomes more brittle after high-temperature shaping and annealing, which can easily cause the filament to break during operation. Since the shaped filament is wound by hand, it is impossible to accurately ensure that the pitch between each filament is consistent. Utility Model Content

[0004] The purpose of this invention is to provide a coil-type electron gun filament firing fixture to solve the related problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a coil-shaped electron gun filament firing fixture, including a ceramic fixture table, a coil-shaped custom groove, and an electric heating base. The ceramic fixture table has a coil-shaped custom groove inside, and a tungsten filament coiled inside the coil-shaped custom groove is provided at the bottom end of the coil-shaped custom groove. An electric heating base is provided on the outside of the ceramic fixture table, and an external pipe is installed on one side of the electric heating base. A solenoid valve is provided inside the external pipe. An external connecting block is installed on the top of the electric heating base, and a vacuum cover is provided above the external connecting block. A sealing component for sealing the position of the vacuum cover is provided inside the external connecting block.

[0006] As a preferred embodiment of the incense-shaped electron gun filament firing fixture of this utility model, the ceramic fixture table is made of alumina ceramic.

[0007] As a preferred embodiment of the incense-shaped electron gun filament firing fixture of this utility model, the distance from which the tungsten filament passes through the ceramic fixture table is 10mm.

[0008] As a preferred embodiment of the incense-shaped electron gun filament firing fixture of this utility model, an electric heating tube is provided on the inner side of the electric heating base to contact the ceramic fixture table.

[0009] As a preferred embodiment of the incense-shaped electron gun filament firing fixture of this utility model, the sealing component includes an arc-shaped sealing gasket and a sealing block. The inner wall of the outer block is provided with an arc-shaped sealing gasket, and the outer wall of the vacuum chamber is equipped with a sealing block that penetrates the arc-shaped sealing gasket. The outer wall of the sealing block is also equipped with an arc-shaped sealing ball that fits tightly against the inner wall of the arc-shaped sealing gasket.

[0010] The beneficial effects of the incense coil-type electron gun filament firing fixture of this utility model are as follows:

[0011] 1. The ceramic fixture of this utility model uses a ceramic material that prevents the tungsten wire from sticking to the ceramic fixture during the heating process. In addition, the ceramic has a small coefficient of expansion, so it will not squeeze the tungsten wire, thus ensuring the integrity of the firing process.

[0012] 2. This utility model uses an external vacuum pump to expel air from the electric heating base, creating a vacuum state. Then, the electric heating tube is activated to heat and shape the ceramic fixture for a few minutes. Heating within the vacuum chamber prevents oxidation of the filament. Finally, the filament is removed through a 10mm protrusion. No manual trimming or chemical treatment is required; it can be used directly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 3 For the present utility model Figure 1 A magnified structural diagram at point A;

[0016] Figure 4 This is a schematic diagram of the main structure of the ceramic tooling table of this utility model;

[0017] Figure 5 This is a top view sectional structural diagram of the present invention.

[0018] In the diagram: 1. Ceramic tooling table; 2. Incense coil-shaped custom trough; 3. Tungsten wire; 4. Electric heating base; 5. External pipe; 6. Solenoid valve; 7. External connecting block; 8. Arc-shaped sealing gasket; 9. Electric heating tube; 10. Sealing block; 11. Arc-shaped sealing ball; 12. Vacuum enclosure. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1, such as Figure 1-2 As shown, this utility model provides a technical solution: a coil-shaped electron gun filament firing fixture, including a ceramic fixture table 1, a coil-shaped custom groove 2, and an electric heating base 4. The ceramic fixture table 1 has a coil-shaped custom groove 2 inside, and a tungsten wire 3 is coiled inside the coil-shaped custom groove 2 at the bottom. The ceramic fixture table 1 is made of alumina ceramic. The tungsten wire 3 passes through the ceramic fixture table 1 by 10mm. The cleaned tungsten wire 3 is first passed through the ceramic fixture table 1 through a through hole on one side and exposed for 10mm. Then, the filament is wound along the direction of the processed spiral groove. Finally, it is wound out through the through hole on the tail side and exposed for 10mm. At this time, the shape of the entire coil-shaped filament is fired in the vacuum furnace. The ceramic fixture table 1 is made of ceramic material, which will not cause the tungsten wire 3 to stick to the ceramic fixture during the heating process. Moreover, the ceramic has a small coefficient of expansion and will not squeeze the tungsten wire 3, thus ensuring the integrity of the firing.

[0021] Example 2, as Figure 1-5 As shown, this utility model provides a technical solution: a coil-shaped electron gun filament firing fixture, including an electric heating base 4 on the outer side of a ceramic fixture table 1, an external pipe 5 installed on one side of the electric heating base 4, an electromagnetic valve 6 installed inside the external pipe 5, an external connecting block 7 installed at the top of the electric heating base 4, and a vacuum chamber 12 installed above the external connecting block 7. An electric heating tube 9 is installed inside the electric heating base 4, which is in contact with the ceramic fixture table 1. The ceramic fixture table 1 is placed into the electric heating base 4, and an external vacuum pump is started to expel the air inside the electric heating base 4, making the electric heating base 4 a vacuum state. Then, the electric heating tube 9 is started to electrically heat and shape the ceramic fixture table 1 for 10 minutes. Heating inside the vacuum chamber 12 will not cause oxidation of the filament. Finally, the filament is taken out through the 10mm lead of the tungsten filament 3. No manual trimming or chemical treatment is required, and it can be used directly.

[0022] Example 2, as Figure 1-5As shown, this utility model provides a technical solution: a coil-shaped electron gun filament firing fixture, including an outer block 7 with a sealing component inside for sealing the position of a vacuum chamber 12. The sealing component includes an arc-shaped sealing gasket 8 and a sealing block 10. The inner wall of the outer block 7 is provided with the arc-shaped sealing gasket 8, and the outer wall of the vacuum chamber 12 is equipped with a sealing block 10 that penetrates the arc-shaped sealing gasket 8. The outer wall of the sealing block 10 is equipped with an arc-shaped sealing ball 11 that fits tightly against the inner wall of the arc-shaped sealing gasket 8. The vacuum chamber 12 drives the sealing block 10 to be inserted into the outer block 7 to compress the arc-shaped sealing gasket 8. The arc-shaped sealing ball 11 compresses the arc-shaped sealing gasket 8, which facilitates tight fit and improves sealing performance.

[0023] Working principle: First, connect the external power supply. The pitch between each tungsten filament 3 is ensured by machining the custom incense-shaped groove 2 inside the ceramic fixture 1. The size of the tungsten filament 3 is determined by machining the corresponding custom incense-shaped groove 2. During machining, two through holes of the same diameter as the filament are machined at both ends of the custom incense-shaped groove 2 to ensure the perpendicularity of the leads. After completion, the cleaned tungsten filament 3 is passed through the ceramic fixture 1 through one through hole, protruding 10mm. Then, the filament is wound along the machined spiral groove direction, finally exiting through the through hole at the tail end, protruding 10mm. At this point, the shape of the entire incense-shaped filament placed in the vacuum furnace has been fired. The vacuum chamber 12 is inserted into the outer block 7 to squeeze the arc-shaped sealing gasket 8. The arc-shaped sealing ball 11 squeezes the arc-shaped sealing gasket 8, so that the vacuum chamber 12 and the electric heating base 4 are sealed and fixed. Then, the electric heating tube 9 is turned on to heat and shape the ceramic tooling table 1 for 10 minutes. Heating inside the vacuum chamber 12 will not cause oxidation of the filament. Finally, it is taken out through the 10mm lead of the tungsten wire 3. No manual trimming or chemical treatment is required, so it can be used directly.

[0024] Because the ceramic fixture 1 is made of ceramic material, the tungsten wire 3 will not stick to the ceramic fixture during the heating process. In addition, the ceramic has a small coefficient of expansion, so it will not squeeze the tungsten wire 3, thus ensuring the integrity of the firing process.

[0025] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A fixture for firing the filament of an incense coil-shaped electron gun, comprising a ceramic fixture table (1), an incense coil-shaped custom groove (2), and an electric heating base (4), characterized in that: The ceramic tooling table (1) has a custom incense-shaped groove (2) inside, and a tungsten wire (3) is coiled inside the custom incense-shaped groove (2) at the bottom end. An electric heating base (4) is provided on the outside of the ceramic tooling table (1), and an external pipe (5) is installed on one side of the electric heating base (4). A solenoid valve (6) is provided inside the external pipe (5). An external block (7) is installed at the top of the electric heating base (4), and a vacuum cover (12) is provided above the external block (7). A sealing component for sealing the position of the vacuum cover (12) is provided inside the external block (7).

2. The incense-shaped electron gun filament firing fixture according to claim 1, characterized in that: The ceramic tooling table (1) is made of alumina ceramic.

3. The incense-shaped electron gun filament firing fixture according to claim 1, characterized in that: The distance from the tungsten wire (3) passing through the ceramic tooling table (1) is 10mm.

4. The incense-shaped electron gun filament firing fixture according to claim 1, characterized in that: The electric heating base (4) is provided with an electric heating tube (9) that contacts the ceramic tooling table (1) on its inner side.

5. The incense-shaped electron gun filament firing fixture according to claim 1, characterized in that: The sealing assembly includes an arc-shaped sealing gasket (8) and a sealing block (10). The inner wall of the outer block (7) is provided with an arc-shaped sealing gasket (8). The outer wall of the vacuum shroud (12) is equipped with a sealing block (10) that penetrates the arc-shaped sealing gasket (8). The outer wall of the sealing block (10) is equipped with an arc-shaped sealing ball (11) that fits tightly against the inner wall of the arc-shaped sealing gasket (8).

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