CN212350719U - Magnetron anode assembly brazing clamp - Google Patents

Abstract

The invention provides a brazing clamp for a magnetron anode assembly, wherein the anode assembly comprises an anode cylinder, a magnetic pole A side, an antenna and a plurality of anode plates, the brazing clamp comprises an upper clamp, a lower clamp and a center pin, the anode assembly is arranged between the upper clamp and the lower clamp, the upper clamp is attached to the top of the anode assembly, the lower clamp is matched with the bottom of the anode assembly, and each anode plate of the anode assembly is supported and limited in the vertical direction; the center pin is arranged in the anode assembly and is used for fixing and limiting each anode plate of the anode assembly in the radial direction; the brazing clamp for the anode assemblies of the magnetrons realizes the fixation and the limit of a plurality of anode plates in the vertical direction and the radial direction at the same time, avoids the dislocation of the anode plates and other anode assemblies, is favorable for ensuring the yield of the magnetrons and ensures the performance of the magnetrons.

Description

Magnetron anode assembly brazing clamp

Technical Field

The invention relates to a brazing clamp for a magnetron anode assembly.

Background

A magnetron is an electric vacuum device used to generate microwave energy; in the production of the magnetron, an anode assembly of the magnetron comprises an anode cylinder, an anode plate, an antenna and other parts; therefore, in the processing process of the anode assembly, all parts need to be assembled and limited through the brazing clamp, then welding is carried out, the anode assembly with an integrated structure is finally processed, and the phenomenon of air leakage cannot occur after welding and forming.

Because spare part is more in the anode assembly, especially the multi-disc anode plate, need the anchor clamps of brazing to fix spacing to relevant part in welding process, take place the part displacement when avoiding welding. In the prior art, due to the fact that the brazing clamp is unreasonable in structural design, particularly, the fixing and limiting conditions of the anode plate are poor, after all parts in the anode assembly are assembled in the clamp, in the welding process stage, slight dislocation of all parts in the anode assembly is caused by transportation, movement and the like, and particularly once the anode plate is slightly dislocated, the performance of the magnetron is seriously influenced, so that the yield is reduced; therefore, the structural improvement of the brazing clamp becomes a technical problem to be solved.

Meanwhile, the antenna is of a slender structure, so that the conditions of looseness, displacement and the like are easily caused in the transportation process of assembly welding, and the microwave emitting performance of the magnetron is influenced; therefore, how to fix and limit the antenna by the soldering fixture is also a technical problem which needs to be taken into consideration.

Disclosure of Invention

In view of the above, the present invention is directed to a brazing clamp for a magnetron anode assembly, so as to solve the problem that the brazing clamp in the prior art is unreasonable in structural design, and particularly, the brazing clamp fixes and limits a plurality of anode plates.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a magnetron anode assembly brazing clamp comprises an anode cylinder, a magnetic pole A side, an antenna and a plurality of anode plates, wherein the brazing clamp comprises an upper clamp, a lower clamp and a center pin; the center pin is arranged in the anode assembly and is used for fixing and limiting each anode plate of the anode assembly in the radial direction; after the anode assembly is arranged in the brazing clamp, the lower clamp bears the anode assembly in the vertical direction and limits the anode plate, the center pin limits the anode plate in the radial direction, and therefore the brazing clamp fixes and limits a plurality of anode plates simultaneously in the vertical direction and the radial direction, dislocation of the anode plates and parts of other anode assemblies is avoided, the yield of the magnetron is favorably ensured, and the performance of the magnetron is ensured; in addition, the antenna clamp, the upper clamp and the lower clamp all parts of the anode assembly in the vertical direction, so that all parts of the anode assembly are tightly connected, and dislocation of the parts is prevented.

Furthermore, the brazing clamp comprises an antenna clamp, the antenna clamp is attached to the top of the anode assembly, the upper clamp is provided with a groove body, the antenna clamp is arranged in the groove body, and an avoidance hole is formed between the antenna clamp and the inner wall of the groove body of the upper clamp and used for fixing and limiting the antenna of the anode assembly; therefore, the antenna clamp is matched with the upper clamp together to clamp, fix and limit the antenna, so that the antenna and parts of other anode assemblies are prevented from loosening or misplacing, and the performance of transmitting microwaves by the magnetron is favorably ensured.

Furthermore, the groove body comprises a limiting groove and an assembling groove which are communicated with each other, the opening size of the limiting groove is smaller than that of the assembling groove, and the opening size of the limiting groove is larger than or equal to the diameter of the rod body of the antenna, so that the antenna can be conveniently arranged in the limiting groove.

Furthermore, the antenna fixture comprises a limiting section and an assembling section, wherein the assembling section is arranged in the assembling groove and matched with the inner wall of the assembling groove, one end of the limiting section is connected with the assembling section, and the other end of the limiting section extends into the limiting groove and is matched with the inner wall of the limiting groove; form between the inner wall of spacing section and spacing groove and dodge the hole, the body of rod of antenna runs through and dodges the hole, and spacing section and the spacing groove of last anchor clamps are simultaneously common to the antenna butt for it carries out the centre gripping fixed, realizes fixed spacing to the antenna, prevents that the antenna from taking place to become flexible, the displacement.

Further, the upper clamp comprises a pressing plate and a boss which are concentrically arranged, and the boss is connected with the lower end face of the pressing plate and extends in a vertical downward direction; the lower end face of the pressing plate is attached to the upper end face of the side of the magnetic pole A, and the boss is attached to the concave part of the side of the magnetic pole A; thereby when last anchor clamps and magnetic pole A side assembly for last anchor clamps and magnetic pole A side fully contact, through the cooperation of the depressed part of boss and magnetic pole A side, be favorable to further carrying on spacingly to magnetic pole A side.

Furthermore, the lower end face of the boss is provided with a first weight reduction groove, so that the center pin is subjected to space avoidance in the assembling process, materials for an upper clamp are saved, and the weight of the upper clamp is reduced.

Furthermore, the upper fixture is provided with a plurality of first lightening holes so as to further reduce the weight of the upper fixture, save the material of the upper fixture, and meanwhile, in the high-temperature welding process, the flow of high-temperature gas between the anode assembly and the brazing fixture is facilitated, and the uniform temperature distribution is ensured.

Furthermore, the center pin is arranged on a center shaft of an anode cylinder of the anode assembly, the center pin is abutted against each anode plate in the anode assembly, and the other end of each anode plate is abutted against the inner wall of the anode cylinder, so that the anode plates are fixed and limited in the radial direction under the combined action of the center pin and the inner wall of the anode cylinder

Further, the magnetic pole a side is provided with a central hole at the central axis; the center pin, the anode cylinder and the side A of the magnetic pole are coaxially arranged, and the center pin penetrates through the center hole, so that the side A of the magnetic pole can be limited while the center pin is used for radially limiting the anode plate, and the side A of the magnetic pole is prevented from being dislocated with the anode cylinder;

compared with the prior art, the magnetron anode assembly brazing clamp has the following advantages:

according to the brazing clamp for the anode assemblies of the magnetrons, the anode plates are fixed and limited in the vertical direction and the radial direction at the same time, so that the anode plates and parts of other anode assemblies are prevented from being staggered, the yield of the magnetrons is favorably ensured, and the performance of the magnetrons is ensured; in addition, the antenna clamp, the upper clamp and the lower clamp all parts of the anode assembly in the vertical direction, so that all parts of the anode assembly are tightly connected, and dislocation of the parts is prevented.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an assembled anode assembly of a magnetron according to an embodiment of the invention before welding;

FIG. 2 is an exploded view of a magnetron anode assembly prior to welding in accordance with an embodiment of the invention;

FIG. 3 is a schematic view of an antenna and anode plate assembly in a magnetron anode assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of an assembly of an antenna fixture and an upper fixture in a brazing fixture for a magnetron anode assembly according to an embodiment of the present invention;

FIG. 5 is a top view of an antenna fixture in a magnetron anode assembly brazing fixture according to an embodiment of the invention;

FIG. 6 is a cross-sectional view of an antenna fixture in a magnetron anode assembly brazing fixture in accordance with an embodiment of the present invention;

FIG. 7 is a top view of an upper fixture of a magnetron anode assembly brazing fixture according to an embodiment of the present invention;

FIG. 8 is a bottom view of an upper fixture in a magnetron anode assembly brazing fixture according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8 according to an embodiment of the present invention;

FIG. 10 is a top view of a lower fixture of a magnetron anode assembly brazing fixture according to an embodiment of the present invention;

fig. 11 is a cross-sectional view taken along line B-B of fig. 10 in accordance with an embodiment of the present invention.

Description of reference numerals:

the antenna fixture comprises an antenna fixture 1, a limiting section 11, an assembling section 12, a first hole structure 13, a first cavity 131, a first cavity 132, a second cavity 133 and a second cavity 134; the upper fixture 2, the groove body 21, the limiting groove 211, the assembling groove 212, the first lightening hole 22, the pressing plate 23, the boss 24, the first lightening groove 25, the lower fixture 3, the first base 31, the second base 32, the central hole 33, the central groove 34, the second lightening hole 35, the bearing surface 36, the central pin 4, the anode cylinder 5, the small equalizing ring 51, the large equalizing ring 52, the magnetic pole A side 6, the central hole 61, the antenna assembling hole 62, the antenna 7, the clamping jaw 71, the anode plate 8, the clamping groove 81, the equalizing ring groove 82, the welding wire 9 and the lightening hole 10.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of their inclusion to those skilled in the art.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The words used herein to indicate orientation are to indicate orientation of the relevant element under normal circumstances of placement or normal assembly.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to solve the problems that in the prior art, the structural design of a brazing clamp is unreasonable, and especially, fixing and limiting of a plurality of anode plates are difficult in the process of assembling and welding an anode assembly, the embodiment provides the brazing clamp for the anode assembly of the magnetron, as shown in fig. 1-11, the brazing clamp comprises an upper clamp 2, a lower clamp 3 and a center pin 4, the anode assembly is arranged between the upper clamp 2 and the lower clamp 3, the upper clamp 2 is attached to the top of the anode assembly, the lower clamp 3 is matched with the bottom of the anode assembly, and each anode plate 8 of the anode assembly is supported and limited in the vertical direction; the center pin 4 is arranged in the anode assembly and is used for fixing and limiting each anode plate 8 of the anode assembly in the radial direction; specifically, the center pin 4 is arranged at the center shaft of the anode cylinder 5 of the anode assembly, the center pin 4 is abutted against each anode plate 8 in the anode assembly, and the other end of the anode plate 8 is abutted against the inner wall of the anode cylinder 5, so that under the combined action of the center pin 4 and the inner wall of the anode cylinder 5, the anode plate 8 is fixed and limited in the radial direction;

simultaneously, take place the problem of becoming flexible, displacement easily for the antenna of solving the positive pole subassembly to ensure to fix spacingly to the antenna of positive pole subassembly, the anchor clamps of brazing include antenna fixture 1, antenna fixture 1 laminates with the top of positive pole subassembly, it sets up cell body 21 to go up anchor clamps 2, antenna fixture 1 sets up in cell body 21, form between the cell body 21 inner wall of antenna fixture 1 and last anchor clamps 2 and dodge hole 10, dodge hole 10 and run through by the antenna 7 of positive pole subassembly for fix spacingly to the antenna 7 of positive pole subassembly.

After the anode assembly is arranged in the brazing clamp, the lower clamp 3 bears the anode assembly in the vertical direction and limits the anode plate 8, and the central pin 4 limits the anode plate 8 in the radial direction, so that the brazing clamp fixes and limits a plurality of anode plates 8 at the same time, the anode plates 8 and other anode assembly parts are prevented from being staggered, the yield of the magnetron is favorably ensured, and the performance of the magnetron is ensured; meanwhile, the antenna clamp 1 is matched with the upper clamp 2 together to clamp, fix and limit the antenna 7, so that the antenna 7 is prevented from loosening or misplacing with other anode assembly parts, and the performance of transmitting microwaves by a magnetron is ensured; in addition, the antenna clamp 1, the upper clamp 2 and the lower clamp 3 clamp each part of the anode assembly in the vertical direction, so that each part of the anode assembly is ensured to be tightly connected, and the dislocation of each part is prevented.

Before explaining the structure of the brazing clamp of the anode assembly of the magnetron, in order to introduce the assembling relation, the specific structure of the anode assembly is introduced;

before assembly, the anode assembly comprises an anode cylinder 5, a small grading ring 51, a large grading ring 52, a magnetic pole A side 6, an antenna 7 and a plurality of anode plates 8 which are independent of each other; meanwhile, in order to facilitate the welding of the various components, corresponding solders are also provided, such as: a welding wire 9 is arranged at the joint of the magnetic pole A side 6 and the anode cylinder 5, and solder is arranged at the joint of the antenna 7 and the anode plate 8; because in the welding process, the solder plays a role in connecting the related components into a whole, the components and the structure of the solder can be set according to the conditions of actual production needs, and the details are not repeated herein.

As shown in fig. 2-3, during assembly, the description is made in the order of assembly: the center pin 4 and a plurality of anode plates 8 are simultaneously arranged in the cylinder of the anode cylinder 5, the center pin 4 and the anode cylinder 5 are coaxially arranged, namely the center pin 4 is arranged on the center shaft of the anode cylinder 5 of the anode assembly, the center pin 4 is abutted against each anode plate 8 in the anode assembly, and the other end of each anode plate 8 is abutted against the inner wall of the anode cylinder 5; the number of the anode plates 8 is even, and the anode plates 8 are arranged in the anode cylinder 5 in an annular array mode by taking the central shaft of the anode cylinder 5 as the center; preferably, the number of the anode plates 8 is 8;

for the anode plate 8, pressure equalizing ring grooves 82 are formed at the upper end and the lower end of the anode plate; after the center pin 4, the anode plate 8 and the anode cylinder 5 are assembled, the small equalizing ring 51 and the large equalizing ring 52 are pressed into the equalizing ring groove 82 at the upper end of the anode plate 8, and the other small equalizing ring 51 and the other large equalizing ring 52 are pressed into the equalizing ring groove 82 at the lower end of the anode plate 8;

then, covering the side 6 of the magnetic pole A on the upper end of the anode cylinder 5, and arranging a welding wire 9 between the side 6 of the magnetic pole A and the anode cylinder 5; the side 6 of the magnetic pole A and the anode cylinder 5 are coaxially arranged;

for the pole a side 6, the pole a side 6 is provided with an antenna mounting hole 62, leaving a certain space for mounting the antenna 7; the center of the magnetic pole a side 6 has a recess, which is provided with a central hole 61 on the central axis of the magnetic pole a side 6; the center pin 4, the anode cylinder 5 and the magnetic pole A side 6 are coaxially arranged, and the center pin 4 penetrates through the central hole 61 and is matched with the magnetic pole A side 6, so that the magnetic pole A side 6 can be limited while the center pin 4 radially limits the anode plate 8, and the magnetic pole A side 6 and the anode cylinder 5 are prevented from being dislocated;

then, the antenna 7 is clamped with the anode plate 8; specifically, a clamping groove 81 is formed in the upper end of the anode plate 8, the claw 71 of the antenna 7 penetrates through the antenna assembling hole 62 on the side 6 of the magnetic pole a, and the claw 71 is clamped with the clamping groove 81, so that the antenna 7 is assembled;

finally, the antenna clamp 1 and the upper clamp 2 are placed on the side 6 of the magnetic pole A, and the antenna 7 is clamped, fixed and limited through the matching between the antenna clamp 1 and the upper clamp 2; and then, arranging the lower clamp 3 at the lower end of the assembled anode assembly to support the anode assembly, particularly to vertically support and limit each anode plate 8. The assembling of the anode assembly and the brazing fixture is completed, the anode assembly is sent into a hydrogen furnace for welding on the basis that the brazing fixture fixes and limits all parts of the anode assembly, and the brazing fixture is taken down after the welding is completed, so that the finished anode assembly is produced.

After the description of the components of the anode assembly, the structure of each fixture and the assembly of the anode assembly to each fixture are described:

go up anchor clamps 2 and set up cell body 21, antenna anchor clamps 1 and the cooperation of cell body 21, just form between the inner wall of antenna anchor clamps 1 and cell body 21 and dodge hole 10, dodge hole 10 and run through by antenna 7 for fix spacing antenna 7.

Specifically, the groove body 21 comprises a limiting groove 211 and an assembling groove 212 which are communicated with each other, the opening size of the limiting groove 211 is smaller than that of the assembling groove 212, and the opening size of the limiting groove 211 is larger than or equal to the diameter of the rod body of the antenna 7, so that the antenna 7 can be conveniently arranged in the limiting groove 211;

the antenna fixture 1 comprises a limiting section 11 and an assembling section 12, wherein the assembling section 12 is arranged in an assembling groove 212 and is matched with the inner wall of the assembling groove 212, one end of the limiting section 11 is connected with the assembling section 12, and the other end of the limiting section 11 extends into a limiting groove 211 and is matched with the inner wall of the limiting groove 211; form between spacing section 11 and the inner wall of spacing groove 211 and dodge hole 10, the body of rod of antenna 7 runs through dodge hole 10, and spacing section 11 and the spacing groove 211 of last anchor clamps 2 are simultaneously jointly to antenna 7 butt for it carries out the centre gripping fixed, realizes fixed spacing to antenna 7, prevents that antenna 7 from taking place not hard up, displacement.

The upper clamp 2 comprises a pressing plate 23 and a boss 24 which are concentrically arranged, and the boss 24 is connected with the lower end face of the pressing plate 23 and extends along the vertical downward direction; the lower terminal surface of clamp plate 23 and the up end laminating of magnetic pole A side 6, boss 24 and the depressed part laminating of magnetic pole A side 6 to when last anchor clamps 2 and magnetic pole A side 6 assembly, make last anchor clamps 2 and magnetic pole A side 6 fully contact, on the limiting displacement's of core pin 4 basis, continue the cooperation through the depressed part of boss 24 and magnetic pole A side 6, be favorable to further spacing magnetic pole A side 6. Preferably, the boss 24 is a circular truncated cone or a truncated cone, and the taper angle is 45 °.

However, considering that the center pin 4 penetrates through the center hole 61 of the magnetic pole a side 6, in order to avoid the upper clamp 2 from colliding with the center pin 4 when being assembled with the magnetic pole a side 6, the lower end surface of the boss 24 is provided with the first lightening groove 25, so that the center pin 4 is avoided in space during the assembly process, the material of the upper clamp 2 is saved, and the weight of the upper clamp 2 is reduced.

Meanwhile, on the basis that the first lightening grooves 25 are used as lightening structures, the upper clamp 2 is provided with a plurality of first lightening holes 22, so that the weight of the upper clamp 2 is further reduced, the material of the upper clamp 2 is saved, and meanwhile, in the high-temperature welding process, high-temperature gas can flow between the anode assembly and the brazing clamp, and the uniform temperature distribution is ensured.

The boss 24 and the pressing plate 23 are integrally formed, and the groove body 21 penetrates through a partial structure of the boss 24 and a partial structure of the pressing plate 23 in the vertical direction; thereby being beneficial to ensuring the integral mechanical strength of the upper clamp 2 on one hand and facilitating the production and the manufacture of the upper clamp 2 on the other hand.

For the antenna clamp 1, the antenna clamp and the upper clamp 2 are used together for limiting and fixing the antenna 7; however, as shown in the structures of fig. 2 and 3, during the assembly process of each part of the anode assembly and the brazing fixture, the antenna 7 is clamped with the clamping groove 81 of the anode plate 8 through the clamping jaw 71, and then the whole anode assembly is sent to a hydrogen furnace for welding after the assembly is completed;

in the process, in order to ensure that the antenna 7 and the anode plate 8 are welded firmly into an integral structure, rather than always keeping the clamping relationship, in the early magnetron production process of the applicant, solder is usually placed in the clamping groove 81 in the process of assembling each part of the anode assembly, and then the antenna 7 is clamped with the clamping groove 81 of the anode plate 8; because the sizes of the anode plate 8, the slot 81, the solder and the like are all small, for an operation worker, the operation difficulty is high when the position of the structure with the small size is placed, the solder is not convenient to be added between the antenna 7 and the anode plate 8, and the situation that the position of the solder deviates or the solder is separated from the slot 81 is easy to occur in the solder placing process, and the welding is performed under the situation, so that the situation that the antenna 7 and the anode plate 8 are not completely welded or even the antenna 7 and the anode plate 8 are not completely welded is easy to occur, and the antenna 7 and the anode plate 8 cannot be firmly welded according to the actual production requirement, so that the yield of the magnetron is influenced.

Therefore, in order to solve the problem that solder is not convenient to add between the antenna 7 and the anode plate 8, the antenna clamp 1 is improved by the application, specifically:

the antenna fixture 1 is provided with a first hole structure 13, and the first hole structure 13 penetrates through the assembling section 12 of the antenna fixture 1 from top to bottom; after the anode assembly and the brazing fixture are assembled, the lower outlet of the first hole structure 13 is sequentially communicated with the antenna assembling hole 62 on the side 6 of the magnetic pole A and the inner cavity of the anode cylinder 5 in the vertical direction, and the lower outlet of the first hole structure 13 is arranged above the clamping groove 81 in the vertical direction; it should be noted that, since the antenna 7 is only clamped with one anode plate 8, in the present application, the clamping slot 81 corresponding to the lower outlet of the first hole structure 13 refers to the clamping slot 81 of the anode plate 8 clamped with the antenna 7, but not the clamping slots 81 of the other anode plates 8 not assembled with the antenna 7.

By improving the antenna clamp 1, when solder is added between the antenna 7 and the anode plate 8, the solder does not need to be added in the assembly process of each part of the anode assembly, after each part of the anode assembly and the brazing clamp are assembled, the solder is put into the first hole structure 13, and under the action of self gravity, the solder sequentially passes through the first hole structure 13 and the antenna assembly hole 62, enters the inner cavity of the anode cylinder 5 and then falls into the clamping groove 81, so that the solder can be conveniently and quickly added between the antenna 7 and the anode plate 8, the operation of workers is facilitated, meanwhile, the first hole structure 13 is arranged on the antenna clamp 1, the position of the first hole structure is limited, the solder can accurately fall into the clamping groove 81, the antenna 7 and the anode plate 8 are favorably and firmly welded, and the yield of a magnetron is favorably improved; in addition, the arrangement of the first hole structure 13 is beneficial to reducing the weight of the antenna clamp 1, saving the material of the antenna clamp 1, and simultaneously, in the high-temperature welding process, the high-temperature gas is beneficial to flowing between the anode assembly and the brazing clamp, so that the uniform temperature distribution is ensured;

in order to facilitate the administration of the filling material into the first pore structure 13, said first pore structure 13 comprises at least one setback cavity and at least one cavity; the cavity is communicated with the hole cavity and sequentially arranged in the direction from top to bottom, namely in the vertical direction, the outlet of the cavity is communicated with the inlet of the hole cavity, the outlet of the hole cavity is sequentially communicated with the antenna assembly hole 62 on the side 6 of the magnetic pole A and the inner cavity of the anode cylinder 5 in the vertical direction, and the outlet of the hole cavity is vertically arranged above the clamping groove 81; the opening size of the cavity is gradually reduced in the vertical direction until the outlet of the cavity is communicated with the inlet of the cavity, the opening size of the outlet of the cavity is the same as that of the inlet of the cavity, the size of the solder is not more than that of the inlet of the cavity, and the size of the solder is not more than that of the antenna assembly hole 62; therefore, the top end of the first hole structure 13, i.e. the inlet of the cavity, is used as a feeding port of the solder, the opening size of the first hole structure is far larger than the size of the solder, so that an operator can easily feed the solder into the first hole structure 13, and the solder falls to an accurate position through the limitation and position correction of the cavity and the cavity, and falls into the clamping groove 81.

Because the solder is in the whereabouts in-process, if will guarantee its whereabouts position accuracy, often need position adjustment many times to this application proposes a specific setting mode of first pore structure 13 in antenna anchor clamps 1:

the first hole structure 13 comprises a first cavity 131, a first hole cavity 132, a second cavity 133 and a second hole cavity 134 which are sequentially communicated from top to bottom, the outlet of the second hole cavity 134 is sequentially communicated with the antenna assembly hole 62 on the side 6 of the magnetic pole A and the inner cavity of the anode cylinder 5 in the vertical direction, and the outlet of the hole cavity is arranged above the clamping groove 81 in the vertical direction;

the second hole cavity 134 is a cylindrical hole cavity, and the hole diameter of the second hole cavity is larger than or equal to the size of the solder; the outlet of the second reducing cavity 133 is communicated with the inlet of the second cavity 134, and the second reducing cavity 133 is a truncated cone-shaped cavity, and the aperture of the second reducing cavity 133 is gradually reduced in the vertical direction until the aperture of the outlet of the second reducing cavity 133 is the same as that of the inlet of the second cavity 134; the outlet of the first bore 132 is communicated with the inlet of the second reducing cavity 133, the first bore 132 is a cylindrical bore, and the bore diameter of the first bore 132 is the same as that of the inlet of the second reducing cavity 133; the outlet of the first buccal cavity 131 is communicated with the inlet of the first bore 132, the first buccal cavity 131 is a truncated cone-shaped bore, and the bore diameter of the first buccal cavity 131 is gradually reduced in the vertical direction until the bore diameter of the outlet of the first buccal cavity 131 is the same as that of the inlet of the first bore 132;

thereby through the setting of two shrinkage cavities and two vestibules in first pore structure 13, the size that the entry of first pore structure 13 was seted up is bigger on the one hand, the workman of being more convenient for puts into the solder in to first pore structure 13, on the other hand is in two shrinkage cavities, under the effect of two vestibules, make the solder can carry out position correction many times when falling in first pore structure 13, make the solder can fall to accurate position, fall into draw-in groove 81 comparatively accurately, be favorable to ensureing that antenna 7 and anode plate 8 firmly weld, be favorable to improving the yields of magnetron.

For the lower clamp 3, the upper end of the lower clamp 3 abuts against the center pin 4, the anode cylinder 5 and the anode plate 8 and is used for supporting and limiting the center pin 4, the anode cylinder 5 and the anode plate 8 in the vertical direction; specifically, as shown in fig. 10 to 11, the lower fixture 3 includes a first base 31 and a second base 32, the first base 31 abuts against the anode cylinder 5, one end of the second base 32 is connected to the first base 31, and the other end of the second base 32 abuts against the center pin 4 and the anode plate 8, respectively; preferably, the first base 31 and the second base 32 are concentrically arranged;

when second base 32 and anode plate 8 butt, second base 32 sets up central groove 34, the tank bottom of central groove 34 and the bottom butt of core pin 4 to through the setting of central groove 34, in the assembling process, form the space and dodge on the one hand, make second base 32 can carry out ascending support of vertical side to anode plate 8, core pin 4 simultaneously, on the other hand is favorable to saving the material of going up anchor clamps 2, reduces the weight of going up anchor clamps 2. Preferably, the central slot 34 is disposed concentrically with the second base 32.

In addition, the external diameter of first base 31 > the external diameter of anode cylinder 5, the external diameter of second base 32 is less than or equal to the internal diameter of anode cylinder 5 to when making first base 31 can fully support anode cylinder 5, second base 32 can not produce interference fit with anode cylinder 5, be favorable to guaranteeing on the one hand that second base 32 is spacing anode cylinder 5 on radial direction, prevent to take place the dislocation between the relevant part, on the other hand is convenient for after the welding of anode unit is accomplished, takes out from anchor clamps 3 down, is favorable to the operation of form removal.

In order to further save the material of the lower clamp 3 and reduce the weight of the lower clamp 3, the lower clamp 3 is provided with a weight reduction structure. Specifically, the weight reducing structure comprises a second weight reducing hole 35, and the second weight reducing hole 35 sequentially penetrates through the second base 32 and the first base 31 from bottom to top; preferably, the lower fixture 3 is provided with a plurality of second lightening holes 35, and the second lightening holes 35 are arranged in a circumferential array mode with the center of the lower fixture 3 as the center; thereby on the one hand reduced the weight of anchor clamps 3 down, saved the material of anchor clamps 3 down, on the other hand is in the high temperature welding in-process, is favorable to high-temperature gas to flow between anode assembly, the anchor clamps of brazing, guarantees temperature evenly distributed.

In addition, the weight-reducing structure further comprises a central hole 33, and the central hole 33 sequentially penetrates through the second base 32 and the first base 31 from bottom to top; preferably, the central hole 33 communicates with a central groove 34; further, the central hole 33 is concentrically disposed with the central groove 34; therefore, the material of the lower clamp 3 is further saved, the weight of the lower clamp 3 is reduced, and the uniform distribution and flow of high-temperature gas are ensured, so that the temperature between the anode assembly and the brazing clamp is uniform.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. The brazing clamp for the anode assembly of the magnetron comprises an anode cylinder (5), a magnetic pole A side (6), an antenna (7) and a plurality of anode plates (8), and is characterized in that the brazing clamp comprises an upper clamp (2), a lower clamp (3) and a center pin (4), the anode assembly is arranged between the upper clamp (2) and the lower clamp (3), the upper clamp (2) is attached to the top of the anode assembly, the lower clamp (3) is matched with the bottom of the anode assembly, and each anode plate (8) of the anode assembly is supported and limited in the vertical direction; the center pin (4) is arranged in the anode assembly and is used for fixing and limiting each anode plate (8) of the anode assembly in the radial direction.

2. The magnetron anode assembly brazing clamp according to claim 1, wherein the brazing clamp comprises an antenna clamp (1), the antenna clamp (1) is attached to the top of the anode assembly, the upper clamp (2) is provided with a groove body (21), the antenna clamp (1) is arranged in the groove body (21), and a relief hole (10) is formed between the inner walls of the groove body (21) of the antenna clamp (1) and the upper clamp (2) and used for fixing and limiting an antenna (7) of the anode assembly.

3. The brazing clamp for the magnetron anode assembly according to claim 2, wherein the groove body (21) comprises a limiting groove (211) and an assembling groove (212) which are communicated with each other, the opening size of the limiting groove (211) is smaller than that of the assembling groove (212), and the opening size of the limiting groove (211) is larger than or equal to the diameter of the rod body of the antenna (7).

4. The magnetron anode assembly brazing clamp as claimed in claim 3, wherein the antenna clamp (1) comprises a limiting section (11) and an assembling section (12), the assembling section (12) is arranged in the assembling groove (212) and matched with the inner wall of the assembling groove (212), one end of the limiting section (11) is connected with the assembling section (12), and the other end of the limiting section (11) extends into the limiting groove (211) and is matched with the inner wall of the limiting groove (211); spacing section (11) and spacing groove (211) inner wall between form dodge hole (10), the body of rod of antenna (7) runs through dodge hole (10).

5. The magnetron anode assembly brazing clamp as claimed in claim 1, wherein the upper clamp (2) comprises a pressing plate (23) and a boss (24) which are concentrically arranged, and the boss (24) is connected with the lower end face of the pressing plate (23) and extends in a vertically downward direction; the lower end face of the pressing plate (23) is attached to the upper end face of the magnetic pole A side (6), and the boss (24) is attached to the concave portion of the magnetic pole A side (6).

6. The magnetron anode assembly brazing jig according to claim 5, wherein a lower end surface of the boss (24) is provided with a first weight-reduction groove (25).

7. A magnetron anode assembly brazing jig according to claim 5, characterized in that the upper jig (2) is provided with a plurality of first lightening holes (22).

8. A magnetron anode assembly brazing jig according to claim 1, characterized in that the center pin (4) is provided at a center axis of an anode cylinder (5) of the anode assembly, the center pin (4) abuts each anode plate (8) of the anode assembly, and the other end of the anode plate (8) abuts an inner wall of the anode cylinder (5).

9. Magnetron anode assembly brazing clamp according to claim 8, characterized in that the pole a side (6) is provided with a central hole (61) at the central axis; the center pin (4), the anode cylinder (5) and the magnetic pole A side (6) are all arranged coaxially, and the center pin (4) penetrates through the center hole (61).

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