CN111740197B

CN111740197B - Circulator assembling process

Info

Publication number: CN111740197B
Application number: CN202010708091.XA
Authority: CN
Inventors: 邓小林; 章革涛; 屈仁兵; 杨国华; 王雪颖
Original assignee: Sichuan Zhongguang Lightning Protection Technologies Co ltd
Current assignee: Sichuan Zhongguang Lightning Protection Technologies Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-12-22
Anticipated expiration: 2040-07-22
Also published as: CN111740197A

Abstract

The invention discloses a circulator assembling process, which comprises the steps of placing a circulator cavity shell pre-installed with a PIN needle into an assembling jig for positioning the circulator cavity shell, then assembling all parts of a laminated assembly into the circulator cavity shell by using a chip mounter to obtain a circulator semi-finished product I, placing an end cover on the circulator semi-finished product I by using an end cover assembling mechanism and fixedly connecting the end cover with the circulator cavity shell to obtain a circulator semi-finished product II, identifying the connection part of the PIN needle and a central conductor by using CCD visual positioning, spot-coating a welding flux by using a spot welding flux mechanism to obtain a circulator semi-finished product III, and then sending the circulator semi-finished product into reflow soldering equipment for reflow soldering processing to obtain a circulator finished product. The invention can accurately position and place the cavity shell of the circulator, realizes automatic high-precision assembly by adopting automatic equipment such as a chip mounter and the like, improves the assembly consistency, has high assembly efficiency, can effectively improve the assembly quality of the circulator, meets the requirement of high performance, greatly improves the production efficiency and increases the production economic benefit.

Description

Circulator assembling process

Technical Field

The invention relates to the technical field of production and processing of circulators, in particular to a circulator assembling process.

Background

The circulator is a multi-port device which transmits incident waves entering any port of the circulator into the next port according to the direction sequence determined by the static bias magnetic field, and the circulator is characterized in that high-frequency signal energy is transmitted in a single direction. It controls the transmission of electromagnetic waves along a certain circular direction. The characteristic of unidirectional transmission of high-frequency signal energy is mainly used between the output end of a high-frequency power amplifier and a load, and plays the role of mutual independence and mutual isolation. The load impedance does not affect the working state of the power amplifier under the condition of change, even open circuit or short circuit, thereby protecting the power amplifier.

The cavity shell of the circulator is internally provided with a laminated assembly, the laminated assembly comprises a central conductor, a plurality of laminated parts such as ferrite substrates positioned on the upper side and the lower side of the central conductor, the volume of the circulator is small, the assembly difficulty is high, manual assembly or nonstandard automatic equipment assembly is generally adopted in the prior art, the assembly efficiency is low, the assembly precision is low, the consistency is poor, the quality of the manufactured circulator is poor, and the performance is difficult to meet the requirements.

Disclosure of Invention

The invention aims to solve the technical problems and the technical task of improving the prior art, provides a circulator assembling process, and solves the problems that the circulator assembling mode in the prior art is low in efficiency, low in assembling precision and poor in consistency, and the quality of the circulator is influenced.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an circulator assembly process, comprising the steps of:

A. placing the circulator cavity shell pre-installed with the PIN needle into an assembly jig for positioning the circulator cavity shell;

B. assembling all parts of the laminated assembly into a circulator cavity shell loaded on an assembling jig by using a chip mounter to obtain a circulator semi-finished product I;

C. the end cover is placed on the circulator semi-finished product I by the end cover assembling mechanism and is fixedly connected with the circulator cavity shell to obtain a circulator semi-finished product II;

D. adopting CCD visual positioning to identify the connection position of the PIN needle of the circulator semi-finished product II and the central conductor in the laminated assembly, and spot-coating solder by a spot solder mechanism to obtain a circulator semi-finished product III;

E. and sending the assembly jig loaded with the third circulator semi-finished product into reflow soldering equipment for reflow soldering processing to obtain a circulator finished product.

The circulator assembling process of the invention firstly utilizes the assembling jig to accurately position and place the circulator cavity shell, thereby ensuring that the subsequent assembly process has high-precision positioning reference, adopting a chip mounter to carry out chip mounting assembly on each component of the laminated assembly, having high assembly precision and good assembly consistency, improving production stability, greatly improving assembly efficiency, reducing labor intensity, adopting equipment to carry out automatic processing for the assembly of the end cover, improving production efficiency, and spot coating of the solder is carried out in a visual positioning mode, the traditional manual operation is replaced, the spot coating position precision is high, the solder spot coating control precision is high, thereby guarantee PIN needle and center conductor's connection reliability, finally accomplish the welding through reflow soldering's mode, whole equipment process automation degree is high, very big improvement production efficiency, increases the productivity, increases production economic benefits.

And D, further, carrying out PIN needle coplanarity adjustment on the circulator semi-finished product II obtained in the step C, and then carrying out the step D, wherein the PIN needle coplanarity adjustment is to push the PIN needles through a pushing mechanism so that the bottom surfaces of all the PIN needles are flush. The PIN needle of circulator is used for being connected with external circuit welding, if the condition that the height appears in the PIN needle inconsistent, the condition of rosin joint can appear when using. The reliability of the electrical connection is poor, and the use stability is seriously influenced.

Furthermore, the end cover in the step C is connected with the circulator cavity shell in a riveting mode, and the end cover assembling mechanism adopts a riveting mechanism; or the end cover is connected with the circulator cavity shell in a threaded mode, the end cover assembling mechanism adopts a screwing mechanism, circulators in different connecting modes can meet different application requirements, the structural stability of the riveting mode is better, and the structure of the threaded mode is easy to process.

Further, the assembly jig is conveyed by the conveying belt device, the circulator cavity shell is sequentially processed in various working procedures along the conveying belt device, when the end cover is connected with the circulator cavity shell in a riveting mode, the circulator semi-finished product I is extracted from the assembly jig to the base of the riveting mechanism to be riveted, the circulator semi-finished product I is placed back to the assembly jig after riveting connection is completed, and when the end cover is connected with the circulator cavity shell in a threaded mode, the screwing mechanism directly places the end cover on the circulator semi-finished product I on the assembly jig to be screwed and assembled. Because the riveting mode needs great effort to accomplish, if directly implement riveting processing on the equipment tool, then can lead to equipment tool, conveyer belt device to be impaired, and the required effort of applying of assembly of screw thread mode is less, can not lead to the fact destructive influence to equipment tool, conveyer belt device, consequently can carry out the end cover assembly with taking out the circulator semi-manufactured goods from the equipment tool to the structure of the end cover assembly devices who implements the threaded connection mode is retrencied more, occupies smallly, and implementation cost is lower.

Furthermore, the spot welding mechanism in the step D adopts a screw valve, so that the control precision is high, and the quantity of the spot-coated solder is ensured to reach the milligram precision.

Furthermore, the reflow soldering device in the step E is provided with a plurality of temperature zones along the conveying direction, and the temperature of the temperature zones gradually rises along the conveying direction, so that the soldering quality is improved.

Furthermore, the assembly jig comprises a jig main body, wherein a positioning groove used for placing the circulator cavity shell is formed in the jig main body, the positioning groove comprises a central groove part matched with the outer wall of the circulator cavity shell and an extension groove part extending from the edge of the central groove part to the radial outer side, the bottom surface of the central groove part is a bearing surface attached to the bottom of the circulator cavity shell, and a positioning hole matched with a PIN needle preassembled on the circulator cavity shell is formed in the bottom surface of the extension groove part. The assembling jig can accurately position and place the circulator cavity shell, the PIN needle is assembled on the circulator cavity shell in advance, then the circular tube is placed in the positioning groove, the central groove part positions the central position of the cavity shell of the circulator so as to ensure the accuracy of the central position of the cavity shell of the circulator, thereby ensuring the accuracy of assembling circular components such as the ferrite substrate, the uniform magnetic sheet, the temperature compensation sheet and the like into the cavity shell, avoiding the situation that the components can not be assembled, simultaneously utilizing the positioning holes in the epitaxial groove part to be positioned and matched with the PIN needles, thereby realizing the circumferential positioning of the circulator cavity shell, leading the circulator cavity shell not to be capable of circumferential rotation, therefore, when the central conductor is assembled, the end part of the central conductor can be aligned to the notch of the circulator cavity shell, the end part of the central conductor can be accurately in butt joint with the PIN, and the situation that the central conductor is interfered with the circulator cavity shell and cannot be installed is avoided. The assembling jig realizes the high-precision positioning and placement of the cavity shell of the circulator, provides a high-precision reference for realizing high-precision assembly in subsequent assembling procedures, can accurately assemble each component of the stacked assembly into the cavity shell of the circulator by adopting a chip mounter, also can accurately assemble the end cover, also ensures the accurate positioning during solder feeding, effectively improves the assembling efficiency, reduces the labor intensity of workers, has high assembling precision and good consistency, effectively improves the quality of the circulator, and meets the requirement of high performance.

Furthermore, the tool main body is fixedly connected with a backing plate, the backing plate can enhance the structural strength of the tool main body, the structural stability of the tool main body is guaranteed, the positioning precision of the circulator cavity shell is guaranteed, and the PIN needle of the circulator and the central conductor need to be welded and connected, after the circulator assembling tool is adopted to complete the assembly of each part, tin paste is coated on the connecting point of the PIN needle and the central conductor, and then the welding connection is carried out in a reflow soldering mode, so that the tool main body can be in a heating environment, the tool main body is directly contacted with a heat source, the local temperature is easily overhigh and the deformation is easily caused, the tool main body is separated from the heat source by the backing plate, the tool main body can be heated more uniformly, the local temperature of the tool main body is prevented from overhigh and the deformation is avoided, the tool main body is guaranteed to have long-acting and stable positioning precision, and the assembling precision and the, the production quality of the circulator is guaranteed. The backing plate adopt synthetic stone to make, structural strength is high, the durability is good, long service life, can effectively avoid tool main part local high temperature, and the backing plate is fretwork frame construction, can alleviate the whole weight of circulator equipment tool, also avoid the excessive isolated heat of backing plate simultaneously, ensure that tool main part and circulator can effectively be heated, thereby make the tin cream between PIN needle and the central conductor effectively by the heating and the melting, and then make PIN needle and central conductor can pass through the firm connection of solder, improve the electric connection stability, avoid appearing the situation of rosin joint, ensure the quality of circulator.

Further, the tool main part stack gradually fixed plate layer one, plate layer two and plate layer three together including from top to bottom, plate layer one, plate layer two on set up the through-hole that runs through both simultaneously in order to constitute central slot portion, plate layer three constitute the bottom surface of central slot portion, plate layer one on still set up the through-hole in order to constitute epitaxial slot portion in the edge of central slot portion, plate layer two on set up the through-hole in order to constitute the locating hole in the corresponding position department of epitaxial slot portion. The processing of the locating slot can be more convenient and faster by adopting the structure, the precision is high, because the circulator has small structure size, the size of the locating slot is small, the depth difference is also arranged between the central slot part and the epitaxial slot part, if the jig main body is of a whole structure, then the locating slot is milled by a milling machine, the processing difficulty is high, the precision of the processed locating slot is difficult to meet the requirement, and once the locating slot is damaged, the whole jig main body needs to be replaced, and the mode that the jig main body is formed by combining the first plate layer, the second plate layer and the third plate layer is adopted, the processing is convenient firstly, the first plate layer, the second plate layer and the third plate layer only need to select the plate with preset thickness, the milling depth is not required to be controlled, the first plate layer and the second plate are directly processed in a penetrating way, the required locating slot can be formed after the first plate layer, the second plate and the third plate, the positioning accuracy of the positioning groove can be greatly improved in the mode, the jig main body with the structure is convenient to process and high in efficiency, only one of the first plate layer, the second plate layer and the third plate layer needs to be replaced when any one of the first plate layer, the second plate layer and the third plate layer is damaged, and the maintenance cost can be reduced.

Further, fretwork through-hole one has been seted up on sheet layer one, sheet layer two, sheet layer three go up to be provided with the fretwork through-hole two that runs through both simultaneously, the bore of fretwork through-hole one be greater than the bore of fretwork through-hole two to fretwork through-hole two is provided with a plurality of at the regional interval of fretwork through-hole one, can alleviate the weight of tool main part, reduces the consumption that conveyer belt device carried the equipment tool, and fretwork through-hole one, fretwork through-hole two can heat flux flow when carrying out reflow soldering and pass through, thereby be favorable to the homogeneity of heating, thereby improve the welding effect between PIN needle and the center conductor, improve electric connection stability, avoid appearing the situation of rosin joint.

Compared with the prior art, the invention has the advantages that:

the circulator assembling process can accurately position and place the circulator cavity shell, thereby realizing automatic high-precision assembly by adopting automatic equipment such as a chip mounter and the like, improving the assembly consistency, having good production stability and high assembly efficiency, reducing the labor intensity, effectively improving the assembly quality of the circulator, meeting the requirement of high performance, greatly improving the production efficiency, increasing the productivity and increasing the production economic benefit.

Drawings

FIG. 1 is a schematic view of an overall structure of a circulator assembling jig;

FIG. 2 is a schematic view of detail C of FIG. 1;

FIG. 3 is a schematic view of a positioning groove;

FIG. 4 is a schematic cross-sectional view of a positioning groove;

FIG. 5 is a schematic structural view of one embodiment of a circulator chamber housing;

FIG. 6 is a schematic view of the fitting structure of the circulator chamber housing and the positioning groove;

fig. 7 is an exploded view of the circulator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The circulator assembling process disclosed by the embodiment of the invention can accurately position the cavity shell of the circulator, is convenient for accurately assembling each component of the laminated assembly in the cavity shell, improves the assembling efficiency, and improves the assembling precision and consistency, thereby improving the production quality of the circulator and ensuring the service performance of the circulator.

As shown in fig. 1 to 7, a circulator assembling jig comprises a jig main body 1, the jig main body 1 is provided with a positioning groove 2 for placing a circulator cavity shell a, the positioning groove 2 comprises a central groove part 21 matched with the outer wall of the circulator cavity shell and an extension groove part 22 extending from the edge of the central groove part 21 to the radial outside, the bottom surface of the central groove part 21 is a bearing surface attached to the bottom of the circulator cavity shell a, the bottom surface of the extension groove part 22 is provided with a positioning hole 23 matched with a PIN a1 preinstalled on the circulator cavity shell a, as shown in fig. 5, a positioning medium piece a2 is preinstalled in the circulator cavity shell a, the positioning medium piece a2 is provided with a convex part protruding from a notch on the wall surface of the circulator cavity shell a to the radial outside, the PIN a1 is preinstalled on the convex part, when the circulator cavity shell a is placed in the positioning groove 2, the convex part of the positioning medium piece a2 is positioned in the extension groove part 22, and the PIN a1 on the convex part is inserted into the positioning hole 23;

tool main part 1 on still fixedly connected with backing plate 3, backing plate 3 and constant head tank 2 be located the bilateral sides of tool main part 1 respectively, in this embodiment, constant head tank 2 sets up at 1 top surface of tool main part, then backing plate 3 sets up the bottom surface at tool main part 1, backing plate 3 adopt synthetic stone to make to for fretwork frame construction, the equipment tool that has placed circulator chamber shell is whole to be placed and is carried by it on conveyor, backing plate 3 directly contacts with conveyor, conveyor drives the equipment tool and loops through range upon range of subassembly assembly station, end cover assembly station, goes up solder station and reflow soldering station, finally accomplishes the equipment of whole circulator. The backing plate can strengthen the structural strength of tool main part, thereby the structural stability guarantee of guarantee tool main part is to the positioning accuracy of circulator chamber shell, simultaneously, at reflow soldering's in-process, utilizes the backing plate can be spaced apart tool main part and heat source, avoids tool main part local temperature too high and warp, ensures that the tool main part has stable positioning accuracy for the tool main part is heated more evenly, ensures PIN needle and center conductor's welding quality.

In this embodiment, the jig main body 1 includes a first plate layer 11, a second plate layer 12 and a third plate layer 13 which are sequentially fixed together in a stacked manner from top to bottom, the backing plate 3 is disposed on a bottom surface of the third plate layer 13, through holes penetrating the first plate layer 11 and the second plate layer 12 are formed in the first plate layer 11 and the second plate layer 12 to form a central groove 21, the third plate layer 13 forms a bottom surface of the central groove 21, the third plate layer 13 contacts with the bottom surface of the circulator cavity shell a to further bear the whole circulator cavity shell a, the third plate layer 13 has good flatness, so that the circulator cavity shell a can be stably placed, the placing precision of the circulator cavity shell a is improved by the flatness of the third plate layer 13, the placing and stacking precision of the chip mounter is further ensured, the through holes are further formed in the edge of the central groove 21 in the first plate layer 11 to form an epitaxial groove 22, the through holes are formed in the positions corresponding to the epitaxial groove 22 in the second plate layer 12 to, the bottom surface of the positioning hole 23 is a third plate layer 13, the caliber of the positioning hole 23 is matched with the diameter of a PIN needle a1 on a circulator cavity shell a, so that the depth of the central groove part 21 is the sum of the thicknesses of the first plate layer 11 and the second plate layer 12, the depth of the epitaxial groove part 22 is the thickness of the first plate layer 11, the depth of the positioning hole 23 is the thickness of the second plate layer 12, the thicknesses of the first plate layer 11, the second plate layer 12 and the third plate layer 13 are selected according to a circulator needing to be assembled actually, the first plate layer 11, the second plate layer 12 and the third plate layer 13 are simple flat plate materials, the cleanliness can be effectively guaranteed, the first plate layer 11 and the second plate layer 12 directly carry out through hole processing, the milling depth does not need to be controlled, then the first plate layer, the second plate layer and the third plate layer are combined together to form the central groove part 21, the epitaxial groove part 22 and the positioning hole, therefore, the positioning precision of the circulator cavity shell is improved, the first plate layer 11, the second plate layer 12 and the third plate layer 13 are fixedly connected into a whole through a plurality of bolts distributed at intervals, the positioning precision is effectively guaranteed, the mounting and dismounting are convenient, and the maintenance and replacement cost is low.

The jig main body 1 is further provided with a hollowed through hole 4 penetrating through the jig main body 1, the weight of the jig main body is reduced, heat can flow through the hollowed through hole during reflow soldering, the heating uniformity is facilitated, the welding stability between the PIN needle and the central conductor is improved, specifically, the first hollowed through hole 41 is formed in the first board layer 11, the second board layer 12 and the third board layer 13 are provided with a hollowed through hole second 42 penetrating through the first board layer and the second board layer simultaneously, the caliber of the hollowed through hole first 41 is larger than that of the hollowed through hole second 42, a plurality of hollowed through holes second 42 are arranged at intervals in the area of the hollowed through hole first 41, the hollowed through hole first 41 and the hollowed through hole second 42 form the hollowed through hole 4 together, in the embodiment, the hollowed through hole first 41 is a through hole which is rectangular as a whole, the hollowed through hole second 42 is a circular through hole, and the thickness of the first board layer 11 is larger than that, therefore, the structural stability of the first board layer 11 cannot be damaged due to the large caliber of the first hollow through hole 41, the thicknesses of the second board layer 12 and the third board layer 13 are small, and the structural stability of the second board layer 12 and the third board layer 13 can be damaged due to the fact that the second hollow through hole 42 is too large in size, so that the mode that the caliber of the first hollow through hole 41 is larger than the caliber of the second hollow through hole 42 is adopted.

Still be provided with paster identification part 5 on sheet layer 11, paster identification part 5 for the circular slotted hole of seting up on sheet layer 11, utilize paster identification part 5 to fix a position when utilizing the chip mounter to pack into circulator chamber shell a with each part of range upon range of subassembly, ensure the precision of placing of part, in this embodiment, tool main part 1 on the interval be provided with a plurality of constant head tanks 2, specifically, constant head tank 2 is vertical and horizontal matrix distribution, all be provided with a paster identification part 5 that pairs with it respectively in the both sides of every constant head tank 2 to can fix a position respectively to the position of every constant head tank 2, further improve the precision of placing of part. If only set up solitary paster identification part 5 and constant head tank 2 has set up a plurality of again at the interval on tool main part 1, then a plurality of constant head tanks 2 that can appear the interval setting lead to the accumulative total increase of position error, the positional deviation of constant head tank 2 far away from paster identification part 5 can be great, the situation that the chip mounter is difficult to assemble into circulator chamber shell a with each part of range upon range of subassembly can appear, this embodiment adopts every constant head tank 2 to have the mode of paster identification part 5 of mating with it respectively, the assembly accuracy to circulator chamber shell a in every constant head tank 2 has been improved.

Example one

A circulator assembling process with the size of 7mm mainly comprises the following steps:

A. mounting the PIN needle a1 on a positioning medium piece a2, placing the positioning medium piece a2 in the circulator cavity shell, wherein a convex part of the positioning medium piece a2 protrudes from a notch on the wall surface of the circulator cavity shell a to the radial outer side, and the PIN needle a1 is positioned on the convex part, so that the circulator cavity shell in which the PIN needle is preinstalled is obtained;

then, the circulator cavity shell pre-installed with the PIN needle is placed into a positioning groove of an assembly jig, the circulator cavity shell is positioned in the heart groove part 21, the convex part of the positioning medium part a2 is positioned in the extension groove part 22, and the PIN needle a1 is inserted into the positioning hole 23, so that the circulator cavity shell is accurately positioned and placed;

the assembly jig is conveyed by a conveying belt device and sequentially carries out subsequent processing of various procedures on the circulator cavity shell along the conveying belt device;

B. the laminated assembly a3 comprises a central conductor, a ferrite substrate, a magnetic homogenizing sheet, a temperature compensation sheet and other components, and all the components of the laminated assembly are assembled into a circulator cavity shell loaded on an assembling jig by a chip mounter to obtain a circulator semi-finished product I;

the chip mounting assembly precision of the chip mounter can reach +/-0.035 mm, the chip mounting assembly of the next circulator can be carried out after the chip mounting assembly of all the laminated assemblies of a single circulator is completed, the next component can be placed after the same component is placed in all the circulator cavity shells, and the production efficiency of the second mode is higher;

in this embodiment, the end cover is connected with the circulator cavity shell in a riveting manner, the end cover assembly mechanism adopts a riveting mechanism, the circulator semi-finished product I is automatically extracted from the assembly jig to the base of the riveting mechanism through the material extraction mechanism, then the end cover is automatically placed on the circulator semi-finished product I through the end cover feeding mechanism, the structural riveting mechanism is used for riveting to fixedly connect the end cover circulator cavity shell, the circulator semi-finished product II is placed back to the assembly jig through the returning mechanism after the riveting connection is completed, and the assembly jig is continuously conveyed to the subsequent process through the conveying belt device;

the second circulator semi-finished product firstly carries out PIN coplanarity adjustment and then carries out the next process step, wherein the PIN coplanarity adjustment is to push the PIN PINs through a pushing mechanism so that the bottom surfaces of all the PIN PINs are flush;

D. the CCD visual positioning is adopted to identify the connection position of the PIN needle of the circulator semi-finished product II and the central conductor in the laminated assembly, and the spot welding mechanism is used for spot-coating the welding flux to obtain a circulator semi-finished product III, the CCD visual positioning identification is adopted to ensure the accuracy of the spot-coating position of the welding flux, the position accuracy can reach +/-0.02 mm, the spot welding mechanism adopts a screw valve to ensure that the quantity of the spot-coating welding flux reaches milligram accuracy, so that the welding quality of the PIN needle and the central conductor is ensured;

E. sending the assembly jig loaded with the third circulator semi-finished product into reflow soldering equipment for reflow soldering processing to obtain a circulator finished product;

the reflow soldering device is provided with a plurality of temperature zones along the conveying direction, the temperature of the temperature zones gradually rises along the conveying direction, specifically, the temperature zones of the reflow soldering device are totally arranged 8 along the conveying direction, the temperature is 170 ℃, 180 ℃, 190 ℃, 210 ℃, 245 ℃, 270 ℃ and 275 ℃ in sequence, and the conveying speed of the reflow soldering device is 0.7 m/min.

Example two

A circulator assembling process with the size of 10mm mainly comprises the following steps:

B. the laminated assembly comprises a central conductor, a ferrite substrate, a uniform magnetic sheet, a temperature compensation sheet and other parts, and all the parts of the laminated assembly are assembled into a circulator cavity shell loaded on an assembling jig by a chip mounter to obtain a circulator semi-finished product I;

in the process of assembling the patch, the same component is placed in all the cavity shells of the circulator, and then the next component is placed;

in this embodiment, the end cover is connected with the circulator cavity shell in a threaded manner, the end cover assembly mechanism adopts a screwing mechanism, the screwing mechanism mainly comprises a servo motor and a screwing head driven by the servo motor, the end cover is provided with a jack for screwing, the screwing head is in butt joint with the jack, then the servo motor drives the screwing head to rotate, and further the end cover is screwed and connected with the circulator cavity shell of the circulator semi-finished product I, and the processing process is directly carried out under the condition that the circulator semi-finished product I is positioned on an assembly jig without taking the circulator semi-finished product I out of the assembly jig;

D. the CCD visual positioning is adopted to identify the connection position of the PIN needle of the circulator semi-finished product II and the central conductor in the laminated assembly, and the spot welding mechanism is used for spot-coating the welding flux to obtain a circulator semi-finished product III;

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.

Claims

1. An circulator assembly process, comprising the steps of:

E. and the assembly jig loaded with the circulator semi-finished product III is sent into reflow soldering equipment to be subjected to reflow soldering processing to obtain a circulator finished product, the reflow soldering equipment is provided with a plurality of temperature zones along the conveying direction, and the temperature of the temperature zones gradually rises along the conveying direction.

2. The process for assembling the circulator of claim 1, wherein the second circulator semi-finished product obtained in the step C is subjected to PIN coplanarity adjustment after the PIN coplanarity adjustment, and the PIN coplanarity adjustment is performed by pushing the PINs through a pushing mechanism so that the bottom surfaces of all the PINs are flush.

3. The process for assembling the circulator of claim 1, wherein the end cap in the step C is connected to the circulator chamber housing by riveting, and the end cap assembling mechanism adopts a riveting mechanism; or the end cover is connected with the circulator cavity shell in a threaded mode, and the end cover assembling mechanism adopts a screwing mechanism.

4. The process of claim 3, wherein the assembly fixture is transported by the transport belt device and the circulator chamber housing is sequentially processed along the transport belt device in the steps, when the end cap is connected to the circulator chamber housing by riveting, the circulator semi-finished product is extracted from the assembly fixture to the base of the riveting mechanism for riveting, and then put back to the assembly fixture after riveting, and when the end cap is connected to the circulator chamber housing by screw thread, the screwing mechanism directly puts the end cap on the circulator semi-finished product on the assembly fixture for screwing the end cap.

5. The process of assembling the circulator of claim 1, wherein the spot welding mechanism of step D is a screw valve.

6. The assembly process of the circulator as claimed in any one of claims 1 to 5, wherein the assembly jig comprises a jig body (1), the jig body (1) is provided with a positioning groove (2) for placing the circulator cavity housing (a), the positioning groove (2) comprises a central groove portion (21) matched with the outer wall of the circulator cavity housing (a) and an extension groove portion (22) extending from the edge of the central groove portion (21) to the radial outside, the bottom surface of the central groove portion (21) is a bearing surface attached to the bottom of the circulator cavity housing (a), and the bottom surface of the extension groove portion (22) is provided with a positioning hole (23) matched with a PIN needle (a1) pre-installed on the circulator cavity housing (a).

7. The circulator assembling process according to claim 6, wherein a backing plate (3) is further fixedly connected to the jig main body (1), and the backing plate (3) is made of synthetic stone and has a hollow frame structure.

8. The assembly process of the circulator as claimed in claim 6, wherein the jig main body (1) comprises a first plate layer (11), a second plate layer (12) and a third plate layer (13) which are sequentially stacked and fixed together from top to bottom, through holes penetrating through the first plate layer (11) and the second plate layer (12) are formed in the first plate layer (11) and the second plate layer (12) to form a central groove portion (21), the third plate layer (13) forms a bottom surface of the central groove portion (21), through holes are formed in the edge of the central groove portion (21) of the first plate layer (11) to form an extension groove portion (22), and through holes are formed in the corresponding positions of the extension groove portion (22) of the second plate layer (12) to form positioning holes (23).

9. The circulator assembling process according to claim 8, wherein a first hollowed-out hole (41) is formed in the first plate layer (11), a second hollowed-out hole (42) which penetrates through the first hollowed-out hole and the second hollowed-out hole simultaneously is formed in the second plate layer (12) and the third plate layer (13), the caliber of the first hollowed-out hole (41) is larger than that of the second hollowed-out hole (42), and a plurality of the second hollowed-out holes (42) are arranged in the area of the first hollowed-out hole (41) at intervals.