Filament pin fixing structure and fixing structure forming tool

Abstract

The utility model provides a filament pin fixing structure and a fixing structure forming tool. The filament pin fixing structure comprises a ceramic plate and a nickel tube. N mounting holes are uniformly formed in the ceramic plate, and N is an even number greater than or equal to 2; the nickel pipe penetrates through the mounting hole of the ceramic plate and comprises a main body and an annular bulge; the annular protrusion is arranged on the outer side wall of the body and attached to the lower end face of the ceramic plate. A bending part is arranged at one end of the main body and attached to the upper end face of the ceramic plate. According to the filament pin fixing structure of the utility model, nickel plating processing does not need to be carried out on the related metal piece, metallization and nickel plating processing do not need to be carried out on the related ceramic, and the falling of the ceramic metallization layer is avoided. Meanwhile, the fixing structure forming tool is simple in structure and low in cost, forming of the fixing structure is more convenient, production and manufacturing time is further shortened, material and process cost is reduced, and reliability of the fixing structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray tubes, in particular to a filament pin fixing structure and a fixing structure forming tool. Background Art

[0002] X-ray tubes are widely used in medical imaging, industrial inspection, security inspection and other fields, and the market demand is huge. In the design and manufacturing process of X-ray tubes, the firmness, reliability and assembly size consistency of the filament pins in the cathode assembly determine the size, shape and stability of the X-ray tube focal spot.

[0003] The current fixing structure 10 for fixing the filament pin of an X-ray tube, such as Figure 1 and Figure 2 As shown, the filament assembly 11 is assembled in the fixed structure 10 to form an integral fixed filament assembly 1. The assembly method is carried out in two steps. The first step is to vacuum braze the metal tube 100 and the porcelain bead 110. The second step is to put the two pins of the filament assembly 11 into the two metal tubes 100 respectively. After adjusting the position, the root of the metal tube 100 and the connection of the pins of the filament assembly 12 are fixed by argon arc welding. In the above process, the metal tube 100 and the porcelain bead 110 need to be surface treated, wherein the surface of the metal tube 100 needs to be nickel-plated, and the inner hole and outer wall of the porcelain bead 110 need to be metallized and nickel-plated. The surface treatment of the parts and vacuum brazing take a long time and are costly. At the same time, there is a risk of the ceramic metallization layer falling off, which reduces the product reliability and is not conducive to mass production.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a filament pin fixing structure and a fixing structure forming tooling, which are used to solve the problem that the filament pin fixing structure in the prior art takes a long time and is costly to manufacture, and there is also the problem that the ceramic metallization layer may fall off.

[0006] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a filament pin fixing structure, the filament pin fixing structure comprising: a ceramic plate and a nickel tube;

[0007] The ceramic plate is evenly provided with N mounting holes, where N is an even number greater than or equal to 2;

[0008] The nickel tube passes through the mounting hole of the ceramic plate, wherein the nickel tube includes a main body and an annular protrusion; the annular protrusion is arranged on the outer side wall of the main body, and the annular protrusion is in contact with the lower end surface of the ceramic plate; a bending portion is arranged at one end of the main body, and the bending portion is in contact with the upper end surface of the ceramic plate.

[0009] Optionally, the ceramic plate is an alumina ceramic plate.

[0010] Optionally, the length of the nickel tube is set to 11 mm to 13 mm.

[0011] The utility model also provides a fixed structure forming tool, which includes: a base, a cover plate, a cavity, a knob device and a riveting die;

[0012] The upper end surface of the base is provided with a first ceramic plate fixing step and a nickel tube fixing step, the nickel tube fixing step is provided in the region of the first ceramic plate fixing step and the upper end surface is in contact with the lower end surface of the first ceramic plate fixing step; the base is also provided with a nickel tube accommodating hole, the nickel tube accommodating hole is provided in the region of the nickel tube fixing step and passes through the base;

[0013] The cover plate is arranged on the base, and the cover plate comprises a riveting die hole, and the riveting die hole penetrates the cover plate;

[0014] The cavity provides a storage space for the base and the cover plate, and a first fixing device for fixing the base is provided on the lower end surface of the cavity; a second fixing device and a rivet hole are provided on the upper end surface of the cavity, and the second fixing device passes through the upper end surface of the cavity to fix the base and the cover plate in the up and down directions; the rivet hole passes through the upper end surface of the cavity;

[0015] The riveting die mold is arranged in the riveting die hole, and the inner side wall of the riveting die hole is in contact with the outer side wall of the riveting die mold; the lower end surface of the riveting die mold is provided with a riveting step, and the corner between the riveting step and the lower end surface of the riveting die mold is a rounded corner;

[0016] The knob device is arranged in the riveting hole, and the external thread of the knob device corresponds to the internal thread of the riveting hole; the lower end surface of the knob device is fitted with the upper end surface of the riveting die.

[0017] Optionally, the central axis of the knob device, the central axis of the riveting die mold, the central axis of the nickel tube fixing step and the central axis of the nickel tube accommodating hole are on the same straight line.

[0018] Optionally, the upper end surface of the riveting die is configured as a guide arc.

[0019] Optionally, the shape of the guide arc is set to be concave.

[0020] Optionally, pin holes are provided at both left and right ends of the base; pin holes are also provided at both left and right ends of the cover plate, and the positions of the pin holes on the base and the pin holes on the cover plate are arranged in a one-to-one correspondence, so that the base and the cover plate can be fixed by placing pins in the pin holes.

[0021] Optionally, the knob device is configured as a riveting screw.

[0022] Optionally, a second ceramic plate fixing step is provided on the lower end surface of the cover plate, and the second ceramic plate fixing step is provided corresponding to the first ceramic plate fixing step.

[0023] As described above, the utility model provides a filament pin fixing structure and a fixing structure forming tool, which has the following beneficial effects:

[0024] 1. The metal parts (nickel tubes) involved in the filament pin fixing structure of the utility model do not need to be nickel-plated, and the ceramic plates involved do not need to be metallized and nickel-plated, thereby avoiding the shedding of the ceramic metallization layer. The utility model adopts a ceramic plate structure, which greatly simplifies the structure, reduces the difficulty of assembly and process processing, and improves the reliability of the filament pin fixing method.

[0025] 2. The fixed structure molding tooling of the utility model has a simple structure and low cost, and makes the molding of the fixed structure more convenient, simplifies the process flow, further shortens the production time, reduces material and process costs, improves the reliability of the fixed structure and the consistency of batch production, and ultimately improves the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure shows a schematic diagram of an integrally fixed filament assembly in the prior art.

[0027] Figure 2 Shown is a cross-sectional view of an integrally fixed filament assembly in the prior art.

[0028] Figure 3 Shown is a structural schematic diagram of the filament pin fixing structure of the utility model.

[0029] Figure 4 Shown is a cross-sectional view of the filament pin fixing structure of the present invention.

[0030] Figure 5 Shown is a schematic structural diagram of the ceramic plate of the present utility model.

[0031] Figure 6 Shown is a cross-sectional view of a ceramic plate of the present invention.

[0032] Figure 7 Shown is a schematic structural diagram of the nickel tube of the present utility model.

[0033] Figure 8 Shown is a cross-sectional view of the nickel tube of the present invention.

[0034] Fig. 9 It is a schematic diagram showing the structure of the nickel tube of the utility model being placed in the installation hole.

[0035] Fig.10 It is a schematic diagram showing the filament pin assembly of the present invention being arranged in a fixed structure.

[0036] Fig.11 It is a cross-sectional view showing the filament pin assembly of the present invention being arranged in a fixed structure.

[0037] Fig.12 Shown is a structural schematic diagram of the fixed structure forming tooling of the utility model.

[0038] Fig.13 Shown is a cross-sectional view of the fixed structure forming tooling of the present utility model.

[0039] Fig.14 Shown is a schematic structural diagram of the base of the utility model.

[0040] Fig.15 Shown is a cross-sectional view of the base of the present invention.

[0041] Fig.16 Shown is a schematic structural diagram of the cover plate of the present invention.

[0042] Fig.17 Shown is a cross-sectional view of the cover plate of the present invention.

[0043] Fig.18 Shown is a cross-sectional view of the pin of the present invention.

[0044] Fig.19 Shown is a schematic structural diagram of the cavity of the present utility model.

[0045] Fig. 20 Shown is a cross-sectional view of the cavity of the present invention.

[0046] Fig.21 Shown is a structural schematic diagram of the riveting die mold of the utility model.

[0047] Fig. 22 Shown is a cross-sectional view of the riveting die mold of the present invention.

[0048] Fig.23It shows a cross-sectional view of the device to be riveted of the utility model placed in a forming tooling of a filament pin fixing structure.

[0049] Component number description

[0050] 1 Integral fixed filament assembly

[0051] 10 Fixing structure of filament pin

[0052] 100 Metal pipe

[0053] 110 Porcelain beads

[0054] 2 Filament pin fixing structure

[0055] 20 Ceramic Plate

[0056] 201 Mounting hole

[0057] 21 Nickel tube

[0058] 210 Main Body

[0059] 211 Annular protrusion

[0060] 212 Bending Department

[0061] 3 Fixed structure forming tooling

[0062] 30 Base

[0063] 301 First Ceramic Plate Fixed Step

[0064] 302 Nickel Tube Fixed Step

[0065] 303 Nickel Tube Receptacle

[0066] 304 Pin hole

[0067] 305 Positioning device

[0068] 305a Positioning step

[0069] 305b Positioning hole

[0070] 31 Cover

[0071] 310 Second ceramic plate fixing step

[0072] 311 Riveting die hole

[0073] 312 Pin hole

[0074] 32 Cavity

[0075] 320 First Fixing Device

[0076] 320a First fixed step

[0077] 320b First fixing hole

[0078] 321 Second Fixing Device

[0079] 321a Fixing screw

[0080] 321b Second fixing hole

[0081] 322 Riveting holes

[0082] 33 Knob device

[0083] 34 Riveting die

[0084] 340 Guide arc

[0085] 341 Riveted Steps

[0086] α Corner

[0087] 35 Reserve gap

[0088] 36 Pins

[0089] 4 Filament assembly DETAILED DESCRIPTION

[0090] The following is a specific example to illustrate the implementation of the present invention. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0091] See also Figures 3 to 23 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any structural decoration, change in proportion relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantial changes in the technical content.

[0092] like Figure 3 and Figure 4 As shown, this embodiment provides a filament pin fixing structure 2, including: a ceramic plate 20 and a nickel tube 21.

[0093] like Figure 5 and Figure 6As shown, N mounting holes 201 are evenly arranged on the ceramic board 20, where N is an even number greater than or equal to 2.

[0094] Specifically, in this embodiment, the number of mounting holes 201 on the ceramic plate 20 includes but is not limited to 2, 4, and 6. In actual use, the number of mounting holes is determined by the number of filament pins to be fixed, which is not described in detail here. As an example, the ceramic plate 20 is an alumina ceramic plate, including but not limited to A-95 alumina ceramic plate, which has the advantages of good wear resistance, good electrical insulation performance and high temperature stability. In actual use, the material of the ceramic plate can be arbitrarily set according to needs, and is not limited to this embodiment.

[0095] like Fig. 9 As shown, the nickel tube 21 passes through the mounting hole 201 of the ceramic plate 20 .

[0096] Specifically, in this embodiment, Figure 8 As shown, the length dimension L of the nickel tube 21 is set to 11mm to 13mm. As an example, the length dimension of the nickel tube 21 is set to 11.2mm, 11.4mm, 11.8mm, and 12.5mm; in actual use, the length dimension of the nickel tube 21 is set as needed, which is not described in detail here. At the same time, the nickel tube 21 uses N6 pure nickel material with good mechanical properties, machinability, weldability and ductility. Compared with the nickel tube using Kovar alloy in the prior art, the nickel tube of N6 pure nickel material further avoids the influence of other redundant elements in Kovar alloy on the vacuum environment when the X-ray tube is working. In actual use, any material that can avoid the influence of redundant elements on the vacuum environment of the X-ray tube is suitable for the nickel tube of the utility model, which is not described in detail here.

[0097] like Figure 7 As shown, the nickel tube 21 includes a main body 210 and an annular protrusion 211; the main body 210 is set as a hollow cylinder with both ends penetrated. The annular protrusion 211 is set on the outer wall of the main body 210, and the annular protrusion 211 is in contact with the lower end surface of the ceramic plate 20, as shown in FIG. Fig. 9 shown.

[0098] Specifically, Fig. 9 As shown, an annular protrusion 211 is provided on the outer wall of the main body 210 and fits with the lower end surface of the ceramic plate 20 to support the ceramic plate 20, while improving the overall compactness and stability of the filament pin fixing structure 2. The shape of the annular protrusion 211 includes but is not limited to a rectangular protrusion and an arc-shaped protrusion. In actual use, any shape of the annular protrusion that can enhance the stability of the fixing structure is applicable to the present utility model, and will not be described one by one here.

[0099] like Figure 3 and Figure 4As shown, a bending portion 212 is provided at one end of the main body 210 , and the bending portion 212 is in contact with the upper end surface of the ceramic plate 20 .

[0100] Specifically, in the present embodiment, when the bending portion 212 contacts the upper end surface of the ceramic plate 20, the shape of the bending portion 212 includes but is not limited to an arc shape. In actual use, the shape of the bending portion in contact with the upper end surface of the ceramic plate is set as needed, which is not described in detail here. The angle of the bending portion 212 when it is an arc shape includes but is not limited to 60°, 120°, 130°, and 160°. In actual use, the angle of the arc-shaped bending portion is set according to the angle when the bending portion 212 contacts the upper end surface of the ceramic plate 20, which is not described in detail here. The fixed connection between the bending portion 212 and the ceramic plate 20 helps to improve the stability and long-term durability of the entire fixed structure 2.

[0101] As an example, Fig.10 and Fig.11 As shown, the two pins of the filament pin assembly 4 are respectively assembled in the two nickel tubes of the filament pin fixing structure 2, and the outer wall of the filament pin assembly 4 is attached to and fixed to the inner wall of the nickel tube 21.

[0102] like Fig.12 and Fig.13 As shown, this embodiment also provides a fixed structure forming tool 3, including: a base 30, a cover plate 31, a cavity 32, a knob device 33 and a riveting die 34.

[0103] like Fig.14 and Fig.15 As shown, the upper end surface of the base 30 is provided with a first ceramic plate fixing step 301 and a nickel tube fixing step 302 . The nickel tube fixing step 302 is arranged in the area of ​​the first ceramic plate fixing step 301 and the upper end surface is in contact with the lower end surface of the first ceramic plate fixing step 301 .

[0104] Specifically, in this embodiment, the first ceramic plate fixing step 301 is disposed on the upper end surface of the base 30. As an example, Fig.12 As shown, the shape of the first ceramic plate fixing step 301 and the base 30 is circular. In actual use, the shapes of the first ceramic plate fixing step and the base can be arbitrarily set according to needs, and will not be repeated here. The diameter size range of the circular first ceramic fixing step is set to 10mm~21.7mm, such as 11mm, 15mm, 18mm, 21mm. In actual use, the size of the first ceramic plate fixing step is arbitrarily set according to needs, not limited to this embodiment. As an example, the diameter size of the nickel tube fixing step 302 is smaller than the diameter size of the first ceramic plate fixing step 301.

[0105] like Fig.15As shown, the base 30 is also provided with a nickel tube accommodating hole 303, which is arranged in the area of ​​the nickel tube fixing step 302 and passes through the base 30. The diameter of the nickel tube accommodating hole 303 is smaller than the diameter of the nickel tube fixing step 302.

[0106] As an example, a positioning device 305 is also provided on the lower end surface of the base 30, and the positioning device 305 is configured as a positioning step 305a and a positioning hole 305b. The positioning hole 305b is located at any position of the lower end surface of the base 30, and the positioning step 305a is provided at the left and right ends of the lower end surface of the base 30.

[0107] like Fig.13 As shown, the cover plate 31 is disposed on the base 30 .

[0108] As an example, Fig.17 As shown, the lower end surface of the cover plate 31 is provided with a second ceramic plate fixing step 310, as shown in FIG. Fig.13 As shown, the second ceramic plate fixing step 310 is arranged corresponding to the first ceramic plate fixing step 301, wherein a gap 35 is reserved between the first ceramic plate fixing step and the second ceramic plate fixing step for placing the device to be riveted.

[0109] like Fig.16 and Fig.17 As shown, the cover plate 31 includes a riveting die hole 311 , and the riveting die hole 311 passes through the cover plate 31 .

[0110] Specifically, in this embodiment, Fig.13 As shown, the diameter of the riveting die hole 311 is larger than the diameter of the nickel tube accommodating hole 303 .

[0111] As an example, Fig.15 As shown, both left and right ends of the base 30 are provided with pin holes 304; Fig.17 As shown, the left and right ends of the cover plate 31 are also provided with pin holes 312, and the positions of the pin holes 304 on the base 30 and the pin holes 312 on the cover plate 31 are arranged one by one, so that the base 30 and the cover plate 31 are fixed by placing pins 36 in the pin holes, and the outer side walls of the pins 36 are correspondingly fitted with the inner side walls of the pin holes, as shown in FIG. Fig.18 and Fig.13 In actual use, any device that can fix the cover plate and the base is applicable to the utility model, and is not limited to this embodiment.

[0112] like Fig.19 As shown, the cavity 32 provides a containing space for the base 30 and the cover plate 31 , and a first fixing device 320 for fixing the base 30 is disposed on the lower end surface of the cavity 32 .

[0113] Specifically, in this embodiment, the first fixing device 320 is configured as a first fixing step 320a and a first fixing hole 320b. The first fixing hole 320b is located at the lower end surface of the cavity 32 and corresponds to the position of the positioning hole 305b on the base 30. The first fixing step 320a is arranged at the left and right ends of the lower end surface of the cavity and corresponds to the position of the positioning step 305a on the base 30. The positioning step 305a and the first fixing step 320a cooperate to facilitate the base 30 to be moved into the cavity 32. At the same time, the first fixing hole 320b cooperates with the positioning hole 305b to fix the base 30 on the lower end surface of the cavity 32. In actual use, any first fixing device that can fix the base on the lower end surface of the cavity and the positioning step that matches the first fixing device are applicable to the utility model, and will not be described one by one here.

[0114] like Fig. 20 As shown, the upper end surface of the cavity 32 is provided with a second fixing device 321 and a rivet hole 322 . The second fixing device 321 passes through the upper end surface of the cavity 32 to fix the base 30 and the cover plate 31 in the up and down directions; the rivet hole 322 passes through the upper end surface of the cavity 32 .

[0115] Specifically, as an example, the second fixing device 321 includes a fixing screw 321a and a second fixing hole 321b, and the outer thread of the fixing screw 321a is matched with the inner thread of the second fixing hole 321b, so that the fixing screw 321a is screwed into the second fixing hole 321b until the lower end surface of the fixing screw 321a contacts and tightens the upper end surface of the cover plate 31, so as to fix the cover plate 31 and the base 30, and avoid riveting failure due to the unfixed cover plate 31 and the base 30 during the riveting process, thereby increasing the cost. In actual use, any second fixing device that can fix the cover plate and the base is applicable to the utility model, and will not be described one by one here. As an example, the second fixing device 321 is arranged at both ends of the upper end surface of the cavity 32 corresponding to the position of the pin hole 312 on the cover plate 31, wherein the diameter of the lower end surface of the second fixing device 321 is larger than the diameter of the pin hole 312 on the cover plate 31, so as to prevent the lower end surface of the second fixing device 321 from directly entering the pin hole 312 due to its small diameter, thereby failing to contact the cover plate 31 and failing to achieve the purpose of fixing the cover plate 31. As another example, the second fixing device 321 is arranged at both ends of the cavity 32, staggered from the pin hole 312 on the cover plate 31, in which case the diameter of the lower end surface of the fixing screw 321a in the second fixing device 321 can be arbitrarily set as needed, and is not limited to the size of the pin hole, and will not be described in detail here.

[0116] like Fig.13 As shown, the riveting die mold 34 is disposed in the riveting die hole 311, and the inner wall of the riveting die hole 311 is in contact with the outer wall of the riveting die mold 34; Fig. 22As shown, the lower end surface of the riveting die 34 is provided with a riveting step 341 , and the corner α between the riveting step 341 and the lower end surface of the riveting die 34 is a rounded corner.

[0117] Specifically, in this embodiment, the corner α between the riveting step 341 and the lower end surface of the riveting die 34 is a rounded corner, and the angle of the rounded corner is greater than or equal to 90° and less than 180°, including but not limited to 90°, 100°, and 120°, wherein the shorter the end of the riveting step 341 away from the lower end surface of the riveting die 34, the greater the angle of the rounded corner. In actual use, the angle of the rounded corner can be arbitrarily set as needed, and will not be described in detail here.

[0118] More specifically, in this embodiment, if Fig.21 As shown, the upper end surface of the riveting die 34 is set as a guide arc 340, and the shape of the guide arc 340 includes but is not limited to a concave shape. By setting the concave guide arc, the contact area between the knob device and the riveting die 34 is increased, thereby improving the bearing capacity of the riveting point.

[0119] like Fig.13 As shown, the knob device 33 is disposed in the riveting hole 322 , and the external thread of the knob device 33 corresponds to the internal thread of the riveting hole 322 ; the lower end surface of the knob device 33 is in contact with the upper end surface of the riveting die 34 .

[0120] Specifically, when the lower end surface of the knob device 33 contacts the riveting die mold 34 whose upper end surface is a concave guide arc 340, a larger contact area is formed, which can distribute the load more evenly, reduce local stress concentration, and improve the stability and durability of the connection of the molding tooling. In actual use, the shape of the guide arc can be set arbitrarily as needed, and is not limited to this embodiment. The knob device 33 is set as a riveting screw. In actual use, any knob device that can apply pressure to the riveted device for riveting is applicable to the utility model, and will not be described one by one here.

[0121] It should be noted that the central axis of the knob device 33, the central axis of the riveting die 34, the central axis of the nickel tube fixing step 302 and the central axis of the nickel tube receiving hole 303 are on the same straight line. This avoids the riveting failure caused by the misalignment when riveting the riveting device, which increases the cost.

[0122] As another implementation of the present invention, the filament pin fixing structure 2 is formed by riveting the fixing structure forming tool 3, such as Fig.23 The specific steps are as follows:

[0123] S1, such as Fig. 9 As shown, a nickel tube 21 with an annular protrusion is placed in a mounting hole 201 corresponding to a ceramic plate 20 to form a device to be riveted;

[0124] S2, the distance between the first ceramic plate fixing step 301 and the second ceramic plate fixing step 310 is greater than or equal to the thickness of the ceramic plate 20. Fig.23 As shown, the device to be riveted of S1 is placed between the base 30 and the cover plate 31 in the fixed structure forming tooling 3; the upper end face of the ceramic plate 20 is fitted with the second ceramic plate fixing step 310, and the lower end face is fitted with the first ceramic plate fixing step 301. That is, the base 30 provides a stable and fixed support platform for the ceramic plate 20, and the cover plate 31 provides a fixing device for the ceramic plate 20, so that during the entire riveting process, the ceramic plate 20 will not move at will to cause riveting failure. The nickel tube 21 is fitted with the nickel tube accommodating hole 303, which further facilitates the installation and positioning of the nickel tube 21. The nickel tube fixing step 302 is correspondingly fitted with the annular protrusion 211 to prevent the nickel tube 21 from moving or deforming when squeezed by external force, causing the nickel tube 21 to be scrapped.

[0125] S3, placing the riveting die 34 in the riveting die hole 311, so that the corner α contacts one end of the main body 210, and the riveting step 341 passes through one end of the main body 210 and enters the hollow position of the main body 210;

[0126] S4, such as Fig.23 As shown, the knob device 33 is brought into contact with the guide arc surface 340 of the riveting die 34 through the riveting hole 322, and the knob device 33 is pressed toward the riveting die 34 through the riveting process, so that one end of the main body 210 is deformed to produce a bent portion 212, and the bent portion is fitted with the upper end surface of the ceramic plate 20 to form a filament pin fixing structure 2.

[0127] In summary, the utility model provides a filament pin fixing structure and a fixing structure forming tool, comprising: a ceramic plate and a nickel tube; N mounting holes are evenly arranged on the ceramic plate, N is an even number greater than or equal to 2; the nickel tube passes through the mounting holes of the ceramic plate, wherein the nickel tube comprises a main body and an annular protrusion; the annular protrusion is arranged on the outer side wall of the main body, and the annular protrusion is fitted with the lower end surface of the ceramic plate; a bending portion is arranged at one end of the main body, and the bending portion is fitted with the upper end surface of the ceramic plate. The metal parts (nickel tube) involved in the filament pin fixing structure of the utility model do not need to be nickel-plated, and the ceramic plate involved does not need to be metallized and nickel-plated, thereby avoiding the shedding of the ceramic metallization layer. The ceramic plate structure is adopted, which greatly simplifies the structure and reduces the difficulty of assembly and process processing. At the same time, the fixing structure forming tool of the utility model has a simple structure, low cost, and makes the forming of the fixing structure more convenient, simplifies the process flow, further shortens the production time, reduces the material and process costs, and improves the reliability of the fixing structure and the consistency of mass production. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0128] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A filament pin fixing structure, characterized in that: The filament pin fixing structure comprises: a ceramic plate and a nickel tube; The ceramic plate is evenly provided with N mounting holes, where N is an even number greater than or equal to 2; The nickel tube passes through the mounting hole of the ceramic plate, wherein the nickel tube includes a main body and an annular protrusion; the annular protrusion is arranged on the outer side wall of the main body, and the annular protrusion is in contact with the lower end surface of the ceramic plate; a bending portion is arranged at one end of the main body, and the bending portion is in contact with the upper end surface of the ceramic plate.

2. The filament pin fixing structure according to claim 1, characterized in that: The ceramic plate is an alumina ceramic plate.

3. The filament pin fixing structure according to claim 1, characterized in that: The length of the nickel tube is set to 11 mm to 13 mm.

4. A fixed structure forming tool, characterized in that: The fixed structure forming tooling comprises: a base, a cover plate, a cavity, a knob device and a riveting die; The upper end surface of the base is provided with a first ceramic plate fixing step and a nickel tube fixing step, the nickel tube fixing step is provided in the region of the first ceramic plate fixing step and the upper end surface is in contact with the lower end surface of the first ceramic plate fixing step; the base is also provided with a nickel tube accommodating hole, the nickel tube accommodating hole is provided in the region of the nickel tube fixing step and passes through the base; The cover plate is arranged on the base, and the cover plate comprises a riveting die hole, and the riveting die hole penetrates the cover plate; The cavity provides a storage space for the base and the cover plate, and a first fixing device for fixing the base is provided on the lower end surface of the cavity; a second fixing device and a rivet hole are provided on the upper end surface of the cavity, and the second fixing device passes through the upper end surface of the cavity to fix the base and the cover plate in the up and down directions; the rivet hole passes through the upper end surface of the cavity; The riveting die mold is arranged in the riveting die hole, and the inner side wall of the riveting die hole is in contact with the outer side wall of the riveting die mold; the lower end surface of the riveting die mold is provided with a riveting step, and the corner between the riveting step and the lower end surface of the riveting die mold is a rounded corner; The knob device is arranged in the riveting hole, and the external thread of the knob device corresponds to the internal thread of the riveting hole; the lower end surface of the knob device is fitted with the upper end surface of the riveting die.

5. The fixed structure forming tool according to claim 4, characterized in that: The central axis of the knob device, the central axis of the riveting die mold, the central axis of the nickel tube fixing step and the central axis of the nickel tube accommodating hole are on the same straight line.

6. The fixed structure forming tool according to claim 4, characterized in that: The upper end surface of the riveting die is arranged as a guide arc.

7. The fixed structure forming tool according to claim 6, characterized in that: The shape of the guide arc is set to be concave.

8. The fixed structure forming tool according to claim 4 or 5, characterized in that: The left and right ends of the base are both provided with pin holes; the left and right ends of the cover plate are also provided with pin holes, and the positions of the pin holes on the base and the pin holes on the cover plate are arranged in a one-to-one correspondence, so that the base and the cover plate are fixed by placing pins in the pin holes.

9. The fixed structure forming tool according to claim 4 or 5, characterized in that: The knob device is configured as a riveting screw.

10. The fixed structure forming tool according to claim 4 or 5, characterized in that: A second ceramic plate fixing step is disposed on the lower end surface of the cover plate, and the second ceramic plate fixing step is disposed correspondingly to the first ceramic plate fixing step.

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