Ceramic insulator core column trimming and fixing device

Abstract

The utility model provides a ceramic insulator core column trimming and fixing device which comprises a base and is characterized in that a pressing block and a top cover are sequentially arranged on the base, a plurality of through holes corresponding to each other up and down are formed in the base and the pressing block, conductive blocks and springs are arranged in the through holes in the pressing block, and ceramic insulators and core columns are arranged in the through holes in the base. After the base, the pressing block and the top cover are mutually connected through the connecting screws, the through holes in the base and the pressing block can ensure the coaxiality when the ceramic insulator and the core column are welded, and the conductive block can be always in contact with the core column through the spring, so that electrical conduction during wire cutting is ensured, and the service life of the ceramic insulator is prolonged. And the appearance quality and the size precision of the trimmed ceramic insulator meet the requirements. In addition, through the first through holes and the second through holes, the device can trim more ceramic insulators at a time, and the trimming efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a trimming and fixing device, in particular to a trimming and fixing device for a ceramic insulator core column, and belongs to the technical field of mechanical design and manufacturing. Background Art

[0002] Ceramic insulators, as an insulating control, are widely used in the manufacturing of semiconductor microelectronic devices. Their function is to connect the inner and outer porcelain-sealed metal shells in an insulated state. In the Dewar assembly of a cooled infrared detector, one or more ceramic insulators are often welded to the shell to connect the getter to achieve an electrical conduction circuit. They are key components for activating the getter. Currently, miniaturized and integrated ceramic insulators have become an important component in the development of cooled infrared detector assemblies. Due to the limited space of the Dewar packaging structure, the length of the ceramic insulator core column usually needs to be controlled within a relatively small size range. To achieve this, it is necessary to: 1) meet the insulation distance requirements between the thin wall of the cold finger (internal length control) to avoid increased heat leakage and even refrigeration frosting; 2) meet the space requirements for the installation of the entire machine (external length control) to avoid interference with other components. However, controlling the length of the core column during the production of ceramic insulators will inevitably increase the difficulty of the preparation process, and the shorter core column length will shorten the guide distance, which will bring great difficulties to the clamping during the preparation process, and may even cause the existing equipment to be unable to meet production needs, resulting in a decrease in the coaxial rate of the ceramic ring and the core column after welding, increasing the risk of welding residual stress, and posing a hidden danger to product quality. If manual clamping is used, it will undoubtedly increase the process cost and cycle. The traditional trimming fixture uses a radial clamping method, and due to the influence of the fixture length, the number of clamps is small, resulting in low trimming efficiency. After long-term use, the circular hole at the clamping position of the ceramic insulator core column is severely deformed, and the appearance quality and dimensional accuracy of the product after trimming cannot be guaranteed. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0003] In order to solve the problems of the existing ceramic insulator core post trimming and cutting device, such as small number of clamps, low trimming and cutting efficiency, and poor trimming and cutting accuracy, the utility model provides a ceramic insulator core post trimming and cutting fixing device.

[0004] The utility model is completed through the following technical solutions: a ceramic insulator core trimming and fixing device, including a base, characterized in that a pressure block and a top cover are sequentially provided on the base, and a plurality of through holes corresponding to each other are provided on the base and the pressure block, wherein: a conductive block and a spring are provided in the through holes on the pressure block, and a ceramic insulator and a core column are provided in the through holes on the base, so that after the base, the pressure block and the top cover are connected to each other, the coaxiality of the ceramic insulator and the core column during welding can be ensured through the through holes on the base and the pressure block, and the conductive block can always be in contact with the core column through the spring, so that when cutting is performed on the wire cutting equipment, electrical conduction is always maintained, so that the appearance quality and dimensional accuracy of the trimmed ceramic insulator meet the requirements.

[0005] The base is configured as a circular disk, and the through holes on the base are configured as first through holes. Several first through holes are configured in the middle of the base, and multiple rows of the first through holes are evenly spaced along the middle of the base, with multiple through holes evenly spaced in each row. The first through holes are all configured as first stepped holes that are larger at the top and smaller at the bottom. The ceramic insulator is located in the upper large hole of the first stepped hole, and the lower end of the core shaft extends downward through the center hole of the ceramic insulator to the lower small hole of the first stepped hole, so that the ceramic insulator can remain coaxial with the core shaft through the stepped hole.

[0006] The pressing block is set as a cylinder with a diameter that is adapted to the diameter of the base. The through hole on the pressing block is set as a second through hole. Several second through holes correspond one to the upper and lower parts of the first through hole. The second through holes are all set as second step holes that are larger at the top and smaller at the bottom. The conductive block is set at the bottom of the upper large hole of the second step hole. The spring is set in the upper large hole of the second step hole and is located on the conductive block. After the pressing block contacts the base, the upper end of the core shaft passes through the lower small hole of the second step hole and contacts the bottom of the conductive block, so as to ensure that the core shaft and the ceramic insulator remain coaxial through the pressing block and enable the core shaft to contact the conductive block.

[0007] The conductive block is configured as a cylinder with a diameter that matches the diameter of the upper large hole of the second through hole.

[0008] The top cover is set as a circular disk adapted to the diameter of the pressing block, with a center hole in the center of the top cover and a groove connected to the center hole at the center of the bottom of the top cover, so that the mounting screw can pass through the groove from bottom to top and extend upward out of the top cover through the center hole.

[0009] A circle of corresponding screw holes is arranged along the outer edges of the top cover, the pressing block and the base, and connecting screws are arranged in the screw holes so that the top cover, the pressing block and the base can be connected as a whole through the connecting screws.

[0010] The present invention has the following advantages and effects: Using the above-described solution, after the base, pressure block, and top cover are interconnected via connecting screws, the through-holes in the base and pressure block ensure coaxiality between the ceramic insulator and the core during welding. Furthermore, the spring ensures that the conductive block maintains contact with the core, thereby ensuring electrical continuity during wire cutting and ensuring that the appearance quality and dimensional accuracy of the trimmed ceramic insulator meet requirements. Furthermore, the use of multiple first and second through-holes enables the device to trim a large number of ceramic insulators at once, greatly improving trimming efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 for Figure 1 The base structure diagram in ;

[0014] Figure 3 for Figure 1 The briquetting structure diagram in . DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0016] The utility model provides a ceramic insulator core trimming and fixing device, comprising a base 3, on which a pressure block 2 and a top cover 1 are sequentially provided. The base 3 and the pressure block 2 are provided with a plurality of upper and lower through holes corresponding to each other, wherein: a conductive block 4 and a spring 5 are provided in the through holes on the pressure block 2, and a ceramic insulator 10 and a core 9 are provided in the through holes on the base 3, so that after the base 3, the pressure block 2 and the top cover 1 are stacked and connected, the coaxiality of the ceramic insulator 10 and the core 9 during welding is ensured through the through holes on the base 3 and the pressure block 2, and the conductive block 4 is always in contact with the upper end of the core 9 through the spring 5, so that electrical conduction is always maintained during cutting on conventional wire cutting equipment, so that the appearance quality and dimensional accuracy of the trimmed ceramic insulator 10 meet the requirements;

[0017] The base 3 is configured as a circular disk. The through-holes on the base 3 are configured as first through-holes 11. A plurality of first through-holes 11 are provided in the middle of the base 3 and are arranged in multiple rows evenly spaced along the middle of the base, with multiple through-holes 11 evenly spaced in each row. The first through-holes 11 are all configured as first stepped holes that are larger at the top and smaller at the bottom. The ceramic insulator 10 is located in the upper large hole of the first stepped hole. The lower end of the core shaft 9 passes through the center hole of the ceramic insulator 10 and extends downwardly into the lower small hole of the first stepped hole, and then extends downwardly so that the ceramic insulator 10 can remain coaxial with the core shaft 9 through the first stepped hole.

[0018] The pressing block 2 is configured as a cylinder having a diameter that matches the diameter of the base 3. The through holes on the pressing block 2 are configured as second through holes 12. The plurality of second through holes 12 correspond one to another above and below the first through holes 11. The second through holes 12 are configured as second stepped holes that are larger at the top and smaller at the bottom. The conductive block 4 is disposed at the bottom of the upper large hole of the second stepped hole. The spring 5 is disposed within the upper large hole of the second stepped hole and is located on the conductive block 4. After the pressing block 2 contacts the base 3, the upper end of the core shaft 9 passes through the lower small hole of the second stepped hole and contacts the bottom of the conductive block 4, so that the core shaft 9 is ensured to remain coaxial with the ceramic insulator 10 through the pressing block 2 and the core shaft 9 is able to contact the conductive block 4.

[0019] The conductive block 4 is configured as a copper cylinder having a diameter that matches the diameter of the upper large hole of the second through hole 12;

[0020] The top cover 1 is a circular disk adapted to the diameter of the pressure block 2. A center hole is provided in the center of the top cover 1, and a groove connected to the center hole is provided at the center of the bottom of the top cover so that the mounting screw 8 can pass through the groove and the center hole from bottom to top and extend upward out of the top cover.

[0021] A plurality of screw holes 6 are provided along the outer edges of the top cover 1, the pressing block 2 and the base 3, and connecting screws 7 are provided in the screw holes 6 so that the top cover 1, the pressing block 2 and the base 3 can be connected as a whole through the connecting screws 7.

[0022] During operation, the ceramic insulator core post trimming and fixing device of the present invention, on which a plurality of core shafts 9 and ceramic insulators 10 are fixed, is fed into a conventional wire cutting device, and the lower ends of the extended plurality of core shafts 9 can be cut, thereby ensuring that the appearance quality and dimensional accuracy of the ceramic insulators 10 after trimming meet the requirements, and more ceramic insulators 10 can be trimmed at one time, thereby greatly improving the trimming efficiency.

[0023] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0024] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic insulator core trimming and fixing device, comprising a base, characterized in that The base is provided with a pressure block and a top cover in sequence. The base and the pressure block are provided with a plurality of through holes corresponding to each other. Among them, the through holes on the pressure block are provided with conductive blocks and springs, and the through holes on the base are provided with ceramic insulators and core columns.

2. The ceramic insulator core trimming and fixing device according to claim 1, characterized in that The base is configured as a circular disk, and the through holes on the base are configured as first through holes. Several first through holes are configured in the middle of the base, and multiple rows of the first through holes are evenly spaced along the middle of the base, with multiple through holes evenly spaced in each row. The first through holes are all configured as first stepped holes that are larger at the top and smaller at the bottom. The ceramic insulator is located in the upper large hole of the first stepped hole, and the lower end of the core shaft passes through the center hole of the ceramic insulator and extends downward to the lower small hole of the first stepped hole.

3. The ceramic insulator core trimming and fixing device according to claim 1, characterized in that The pressing block is set as a cylinder with a diameter that is adapted to the diameter of the base. The through hole on the pressing block is set as a second through hole. Several second through holes correspond one to the upper and lower parts of the first through hole. The second through holes are all set as second step holes that are larger at the top and smaller at the bottom. The conductive block is set at the bottom of the upper large hole of the second step hole. The spring is set in the upper large hole of the second step hole and is located on the conductive block. After the pressing block contacts the base, the upper end of the core shaft passes through the lower small hole of the second step hole and contacts the bottom of the conductive block.

4. The ceramic insulator core trimming and fixing device according to claim 1, characterized in that The conductive block is configured as a cylinder with a diameter that matches the diameter of the upper large hole of the second through hole.

5. The ceramic insulator core trimming and fixing device according to claim 1, characterized in that The top cover is configured as a circular disk adapted to the diameter of the pressing block, a center hole is provided at the center of the top cover, and a groove connected to the center hole is provided at the center of the bottom of the top cover.

6. The ceramic insulator core trimming and fixing device according to claim 1, characterized in that A circle of screw holes corresponding to each other are arranged at intervals along the outer edges of the top cover, the pressing block and the base, and connecting screws are arranged in the screw holes.

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