A welding process for magnetron A side

Abstract

The present invention discloses a magnetron A-side welding process, comprising the following steps: S1, assembling the anode cylinder assembly, the A-side magnetic pole and the output assembly in sequence to form the magnetron A-side to-be-welded assembly; S2, pre-welding the magnetron A-side to-be-welded assembly; S3, after the pre-welding is completed, performing A-side welding on the magnetron A-side to-be-welded assembly; S4, after the A-side welding is completed, performing a process inspection, and sending qualified products to a qualified product conveying line, and unqualified products to a defective product conveying line. The present invention pre-welds the A-side tube shell and the anode cylinder before performing the A-side automatic welding to initially fix them, and then conveys them to the next process manually / automatically to complete the A-side automatic welding, which completely solves the problems of bulk materials and magnetic pole displacement, can save anode cylinder materials, reduce the cost of a single branch pipe, and is conducive to realizing automatic welding of equipment, streamlined production operations, and improving the production efficiency of magnetrons.

Description

Technical Field

[0001] The invention relates to the technical field of magnetron production and processing technology, in particular to a magnetron A-side welding process. Background Art

[0002] Microwave ovens have become a common electrical appliance in people's daily lives, and their related technologies have been quite mature after years of development. Especially in recent years, with the improvement of people's living standards, people's demand for microwave ovens has also increased, which has also stimulated microwave oven manufacturers to carry out technological reforms to improve their production capacity. As the core component of microwave ovens, the efficiency and quality of the production and processing of magnetrons are the top priority of microwave oven production, which is directly related to the production capacity and quality of microwave oven production. Based on the structure of the magnetron core and the characteristics of the production process, in the production and processing of the magnetron core, the production of the magnetron core is usually divided into several component processes. In the specific production process, several related parts are first assembled into corresponding functional components, such as cathode components, anode components and exhaust pipe components, that is, these functional components are first assembled and fixed together to form a whole, and finally these functional components are assembled and processed into magnetron cores to facilitate process operation and improve production efficiency. Magnetron is also called vacuum tube. The internal vacuum degree of qualified magnetron must meet the design requirements. Welding is an indispensable processing technology for the production and processing of existing magnetron products. On the other hand, because the parts that constitute the magnetron are small and numerous, the production and processing process of the magnetron is multi-step and complicated, and there are many steps that require manual operation. That is, the existing magnetron production and processing technology still has a lot of room for improvement and optimization. Therefore, it is necessary to improve the design of the existing magnetron A-side welding process to improve production efficiency and product quality. Summary of the invention

[0003] In view of the above problems, the present invention provides a magnetron A side welding process, comprising the following steps:

[0004] S1, assembling the anode cylinder assembly, the A-side magnetic pole and the output assembly in sequence to form the A-side assembly to be welded of the magnetron;

[0005] S2, pre-welding the components to be welded on the A side of the magnetron;

[0006] S3, after the pre-welding is completed, the A side of the magnetron A side assembly to be welded is welded;

[0007] S4, after the A side welding is completed, a process inspection is performed, and qualified products are sent to a qualified product conveyor line, and unqualified products are sent to a defective product conveyor line.

[0008] As a further illustration of the present invention, step S1 comprises:

[0009] S101, placing the output assembly on a pre-welding fixture;

[0010] S102, assembling the A-side magnetic pole on the A-side tube shell of the output assembly;

[0011] S103, assembling the anode cylinder assembly on the A-side tube shell;

[0012] S104, checking and adjusting the mutual positional matching relationship among the anode cylinder assembly, the A-side magnetic pole and the output assembly so that they are assembled in place.

[0013] Furthermore, the pre-welding is spot welding, and at least two spot welding connections are completed between the anode cylinder of the anode cylinder assembly and the A-side tube shell connection.

[0014] Furthermore, the pre-welding is performed manually or with pre-welding equipment.

[0015] Furthermore, the A-side welding is a full weld, completing a full weld connection between the anode cylinder of the anode cylinder assembly and the A-side tube shell connection.

[0016] Furthermore, the A-side welding is performed manually or with A-side welding equipment.

[0017] Furthermore, after step S3, the anode cylinder assembly, the A-side magnetic pole and the output assembly are welded to form a magnetron core.

[0018] Furthermore, the process inspection in step S4 includes performing resistance detection on the magnetron core.

[0019] Furthermore, the pre-welding fixture includes a first pre-welding fixture and / or a second pre-welding fixture, and the pre-welding equipment includes a first pre-welding equipment and / or a second pre-welding equipment; the first pre-welding fixture and the first pre-welding equipment constitute a first pre-welding line, and the second pre-welding fixture and the second pre-welding equipment constitute a second pre-welding line.

[0020] Furthermore, the pre-welding fixture is a rotatable fixture, and a plurality of pre-welding points are arranged at intervals on the assembly to be welded on the A side of the magnetron, and the pre-welding of the plurality of pre-welding points is completed sequentially in the step S2.

[0021] Beneficial effects of the present invention:

[0022] The present invention pre-welds the tube shell and the anode tube on the A side before automatic welding on the A side, so that they are initially fixed, and then transports them to the next process manually / automatically to complete automatic welding on the A side, which completely solves the problems of bulk materials and magnetic pole displacement, can save materials for the anode tube, reduce the cost of a single branch tube, and is conducive to realizing automatic welding of equipment, streamlined production operations, and improving the production efficiency of magnetrons. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the magnetron of the present invention;

[0024] Figure 2 This is a process flow chart of the welding process of the magnetron A side of the present invention;

[0025] Figure 3 It is a schematic diagram of the pre-welding process of an embodiment of the present invention.

[0026] Figure numerals: anode cylinder 1, anode blade 2, antenna 3, lead terminal 4, K-side insulating ceramic 5, K-side tube shell 6, filament 7, exhaust pipe 8, A-side insulating ceramic 9, A-side tube shell 10, K-side magnetic pole 11, A-side magnetic pole 12, pre-welding point 13. DETAILED DESCRIPTION

[0027] Example:

[0028] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] like Figure 1 As shown, it is a common structure of the magnetron of the present invention, which can be roughly divided into an anode cylinder assembly, a cathode assembly and an output assembly; wherein the anode cylinder assembly comprises a cylindrical anode cylinder 1 and anode blades 2 radially distributed on the inner wall of the anode cylinder, and components such as a voltage equalizing ring and an antenna 3 are welded and fixed on the anode blades; the cathode assembly is the input end of the magnetron, mainly including lead terminals 4, K-side insulating ceramics 5, K-side tube shell 6 and filament 7 and other components; the output assembly is the output end of the magnetron, mainly including exhaust pipe 8, A-side insulating ceramics 9 and A-side tube shell 10 and other components. The end of the anode cylinder connected to the cathode assembly is called the K side, which is used for sealing connection with the cathode assembly, and a K-side magnetic pole 11 is arranged between the two; the side of the anode cylinder connected to the output assembly is called the A side, which is used for sealing connection with the output assembly, and an A-side magnetic pole 12 is arranged between the two. The A-side welding process of the magnetron described in the present invention is a process treatment method for realizing the above-mentioned sealing connection between the anode cylinder and the output assembly.

[0031] Specifically, see Appendix Figure 2As shown, the magnetron A side welding process of the present invention comprises the following steps:

[0032] S1, assemble the anode cylinder assembly, the A-side magnetic pole and the output assembly in sequence to form the magnetron A-side assembly to be welded; the anode cylinder assembly and the output assembly here are components that have been processed by the previous process steps and form a whole, that is, in the S1 step, the anode cylinder assembly, the A-side magnetic pole and the output assembly are regarded as an assembly between three components.

[0033] S2, pre-welding the magnetron A-side assembly to be welded; after the assembly of the above step S1, the anode cylinder is in direct contact with the edge of the A-side tube shell, and the A-side magnetic pole is wrapped inside the magnetron A-side assembly to be welded. The purpose of pre-welding is to preliminarily fix the anode cylinder and the A-side tube shell, and also to preliminarily fix the A-side magnetic pole between the two.

[0034] S3, after the pre-welding is completed, the A side welding is performed on the A side assembly to be welded of the magnetron; as described above, after the pre-welding process, the A side assembly to be welded of the magnetron has actually formed a whole, and general transportation and automatic welding actions will not cause the anode cylinder, the A side magnetic pole, and the output assembly to be displaced or scattered, thereby completely solving the problem of scattered materials and magnetic pole displacement that is prone to occur in the existing process of automatic welding of the A side of the magnetron.

[0035] S4, after the A side welding is completed, a process inspection is performed, and qualified products are sent to a qualified product conveyor line, and unqualified products are sent to a defective product conveyor line.

[0036] In order to improve the efficiency of the process, in some embodiments, the step S1 is implemented with the assistance of an operation assembly line, on which there is a pre-welding fixture that can assist in the assembly and transportation of the anode cylinder assembly, the A-side magnetic pole and the output assembly. In this embodiment, the pre-welding fixture at least has the function of carrying and positioning the output assembly, such as a groove-type fixture with a shape that matches the output assembly. When performing the specific operation of step S1, the following steps can be followed:

[0037] S101, placing the output assembly on a pre-welding fixture so that the inner side of the A-side tube shell of the output assembly faces upward;

[0038] S102, assembling the A-side magnetic pole on the A-side tube shell of the output assembly;

[0039] S103, assembling the anode cylinder assembly on the A-side tube shell;

[0040] S104, check and adjust the mutual position coordination relationship among the anode cylinder assembly, the A-side magnetic pole and the output assembly, mainly check whether the three are placed stably and whether there is any abnormal deformation of the appearance structure, so that they are assembled in place to reduce unnecessary product scrapping.

[0041] It should be noted that the purpose of pre-welding the assembly to be welded on the A side of the magnetron in the present invention is to achieve a preliminary fixing effect. Spot welding can meet the functional requirements of pre-welding. Therefore, the pre-welding described in this embodiment is spot welding, and at least two spot welding connections are completed between the anode cylinder of the anode cylinder assembly and the A side tube shell connection. It is easy to understand that the specific number of pre-welding points can be selected and designed according to the actual situation and needs. For example, in this embodiment, two pre-welding points 13 are set for a magnetron A side assembly to be welded, preferably in opposite directions. In some embodiments, the pre-welding points can also be set to three. When three pre-welding points are set, the three pre-welding points distributed in a triangular shape can have a better preliminary fixing effect, but the pre-welding man-hours and welding costs will be increased. In actual application, the selection can be made after considering various factors. Specifically, for the pre-welding of the assembly to be welded on the A side of the magnetron, it is feasible to use manual welding or pre-welding equipment to complete the pre-welding.

[0042] Many parts of the magnetron are sealed and connected to each other through welding, so that the designed vacuum degree can be maintained inside the magnetron. After pre-welding, the anode cylinder assembly, cathode assembly and output assembly are basically relatively fixed, which is convenient for subsequent A-side welding. Similarly, it is also feasible to complete the A-side welding manually or with A-side welding equipment. The A-side welding is a full weld, completing the full weld connection between the anode cylinder of the anode cylinder assembly and the A-side tube shell connection, as shown in the attached figure. Figure 2 As shown, when the A-side welding equipment is used to perform the A-side welding, the process flow can be designed as an automatic operation assembly line to improve the overall efficiency of the magnetron A-side welding.

[0043] It should be noted that the anode cylinder assembly of the present invention can be understood as a combination of conventional anode cylinders and anode blades and other parts. In these embodiments, the magnetron A-side assembly to be welded and the cathode assembly need to be welded later to form the magnetron core. In the embodiments shown in the drawings of the present invention, the anode cylinder assembly refers to a combination of the anode cylinder assembly and the cathode assembly, that is, after step S3, the anode cylinder assembly, the A-side magnetic pole and the output assembly are welded to form the magnetron core.

[0044] On the other hand, after the magnetron A side welding is completed, some necessary process inspection steps need to be performed, such as the air tightness test of the magnetron, including the magnetron A side leakage test and the K side leakage test, etc., to detect whether the welding process is qualified. In this embodiment, the process inspection in step S4 also includes conventional tests such as resistance test on the magnetron core.

[0045] As described above, in order to improve the efficiency of the welding process on the side A of the magnetron, it is preferably carried out in a streamlined manner. As shown in the embodiment shown in the accompanying drawings, according to the characteristics of the double-station A-side automatic welding equipment, the pre-welding fixture includes a first pre-welding fixture and a second pre-welding fixture, and the pre-welding equipment includes a first pre-welding equipment and a second pre-welding equipment; the first pre-welding fixture and the first pre-welding equipment constitute a first pre-welding line, and the second pre-welding fixture and the second pre-welding equipment constitute a second pre-welding line. The components to be welded on the side A of the magnetron travel from two pre-welding lines, and after completing pre-welding at the pre-welding machine, they are automatically fed to the double-station A-side automatic welding equipment and complete the welding of the side A of the magnetron, realizing streamlined operation.

[0046] As attached Figure 3 As shown, in this embodiment, two pre-welding points are set for the assembly to be welded on the side A of the magnetron, and the pre-welding fixture is a rotatable fixture. After one pre-welding of the assembly to be welded on the side A of the magnetron is completed at the pre-welding machine, the pre-welding fixture rotates the assembly to be welded on the side A of the magnetron and completes another pre-welding. In actual application, the position and number of pre-welding points can be designed according to specific needs, and the pre-welding of the several pre-welding points can be completed in sequence in the step S2.

[0047] Based on the magnetron A side welding process of the present invention, the A side tube shell and the anode tube are pre-welded to initially fix them before the A side automatic welding is performed, and then they are manually / automatically transported to the next process to complete the A side automatic welding, which completely solves the problems of bulk materials and magnetic pole displacement, can save anode tube materials, reduce the cost of a single branch tube, and is conducive to realizing automatic welding of equipment, streamlined production operations, and improving the production efficiency of magnetrons.

[0048] The above only describes the preferred embodiments of the present invention, but it cannot be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A magnetron A side welding process, characterized in that: The following steps are involved: S1, assembling the anode cylinder assembly, the A-side magnetic pole and the output assembly in sequence to form the A-side assembly to be welded of the magnetron, including: S101, placing the output assembly on a pre-welding fixture; S102, assembling the A-side magnetic pole on the A-side tube shell of the output assembly; S103, assembling the anode cylinder assembly on the A-side tube shell; S104, checking and adjusting the mutual position matching relationship of the anode cylinder assembly, the A-side magnetic pole and the output assembly so that they are assembled in place; S2, pre-welding the components to be welded on the A side of the magnetron; S3, after the pre-welding is completed, the A side of the magnetron A side assembly to be welded is welded; S4, after the A side welding is completed, a process inspection is performed, and qualified products are sent to a qualified product conveyor line, and unqualified products are sent to a defective product conveyor line; The pre-welding is spot welding, and at least two spot welding connections are completed between the anode cylinder of the anode cylinder assembly and the A-side tube shell connection; The pre-welding is performed by pre-welding equipment; The pre-welding fixture is a rotatable fixture, and a plurality of pre-welding points are arranged at intervals on the assembly to be welded on the A side of the magnetron. In the step S2, the pre-welding of the plurality of pre-welding points is completed in sequence.

2. The magnetron A side welding process according to claim 1, characterized in that: The A-side welding is a full weld, completing a full weld connection between the anode cylinder of the anode cylinder assembly and the A-side tube shell connection.

3. The magnetron A side welding process according to claim 1, characterized in that: The A-side welding is performed manually or by A-side welding equipment.

4. The magnetron A side welding process according to claim 1, characterized in that: After step S3, the anode cylinder assembly, the A-side magnetic pole and the output assembly are welded to form the magnetron core.

5. The magnetron A side welding process according to claim 4, characterized in that: The process inspection in step S4 includes performing resistance detection on the magnetron core.

6. The magnetron A side welding process according to claim 1, characterized in that: The pre-welding fixture includes a first pre-welding fixture and / or a second pre-welding fixture, and the pre-welding equipment includes a first pre-welding equipment and / or a second pre-welding equipment; the first pre-welding fixture and the first pre-welding equipment constitute a first pre-welding line, and the second pre-welding fixture and the second pre-welding equipment constitute a second pre-welding line.

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