A welding device for magnetrons and a control method thereof

Abstract

The present application relates to magnetron welding technical field, especially to a kind of welding device for magnetron and its control method, comprising: first clamp, two second clamps, first moving mechanism, second moving mechanism, second rotating mechanism, to adjust the included angle of the straight line of the welding head with X axis, detection mechanism, control mechanism, to adjust the distance of the welding head and the outer edge of the sealing element according to the flatness characteristic parameter of the outer edge of the sealing element, and according to the weld distribution situation determine the welding characteristic parameter, according to the welding state determined by the welding characteristic parameter, according to the abnormal state of welding adjusts the rotating speed of the first rotating mechanism;According to the hot area distribution area of the magnetic pole and the sealing element, adjust the distance of the welding head and the magnetic pole and the sealing element, and adjust the included angle of the straight line of the welding head with X axis.The present application realizes the uniform heating of the welding head to sealing element and magnetic pole, improves the quality of welding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetron welding, in particular to a welding device for magnetron and a control method thereof. BACKGROUND

[0002] In the welding process, the welding head as the key component of energy transmission, its heat conduction characteristics, structure design and process parameter matching directly affect the welding quality. However, the existing technology generally has the problem of uneven heat distribution in the welding process, which causes local overheating or underheating phenomenon at the welding interface, and further causes insufficient welding strength, false welding, cracking of welding points, and even damage to the components to be welded.

[0003] Chinese Patent Publication No. CN117283176B discloses a magnetron A-side welding process, comprising the following steps: S1, assembling an anode cylinder assembly, an A-side magnet and an output assembly in sequence to form a magnetron A-side assembly to be welded; S2, pre-welding the magnetron A-side assembly to be welded; S3, after pre-welding is completed, A-side welding is performed on the magnetron A-side assembly to be welded; S4, after the A-side welding is completed, process inspection is performed, and the qualified products are sent to the qualified product conveying line, and the unqualified products are sent to the defective product conveying line. The present application pre-welds the A-side tube shell and the anode cylinder before A-side automatic welding, preliminarily fixes them, and then delivers them to the next process through a manual / automatic mode to complete the A-side automatic welding, completely solves the problems of scattered materials and magnet displacement, saves anode cylinder materials, reduces the cost of a single tube, and is beneficial to realize automatic welding of equipment, flow production operation and improvement of the production efficiency of magnetrons. As can be seen, the magnetron A-side welding process has the problem that when welding through the welding head, the two components to be welded are unevenly heated, resulting in poor welding quality and even damage to the components to be welded. SUMMARY

[0004] Therefore, the present application provides a welding device for magnetron and a control method thereof to overcome the problem that when welding through the welding head in the prior art, the two components to be welded are unevenly heated, resulting in poor welding quality and even damage to the components to be welded.

[0005] To achieve the above-mentioned purpose, the present application provides a welding device for magnetron, comprising: a clamping mechanism for clamping a filament, comprising a first clamp for restricting the spatial position of the filament and two second clamps symmetrically arranged on both sides of the first clamp, the second clamp comprising a fixing plate for placing a magnet, a plurality of fixing clamps for fixing the magnet, and an internal feed channel provided with a pushing piece for pushing and embedding a sealing element into the magnet;

[0006] a welding head arranged close to the embedded part of the magnet and the sealing element for welding the magnet and the sealing element;

[0007] a moving mechanism connected with the clamping mechanism and the welding head, comprising a first moving mechanism for adjusting the distance between the two second clamps and the first clamp respectively, and a second moving mechanism connected with the welding head for adjusting the distance between the welding head and the magnetic pole and the sealing element respectively;

[0008] a first rotating mechanism connected with the two second clamps respectively for rotating the two second clamps;

[0009] a second rotating mechanism connected with the welding head for adjusting the angle between the welding head and the straight line parallel to the X axis;

[0010] a control mechanism connected with the first moving mechanism, the second moving mechanism, the first rotating mechanism, the second rotating mechanism and the detecting mechanism respectively for determining the time of completing assembly according to the distance between the first clamp and the two second clamps, adjusting the distance between the welding head and the outer edge of the sealing element according to the flatness characteristic parameter of the outer edge of the sealing element, determining the welding characteristic parameter according to the distribution of the welding seam, determining the state of welding according to the welding characteristic parameter, adjusting the rotating speed of the first rotating mechanism according to the abnormal state of welding, adjusting the distance between the welding head and the magnetic pole and the sealing element according to the distribution area of the hot zone of the magnetic pole and the sealing element, and adjusting the angle between the welding head and the straight line parallel to the X axis.

[0011] Further, the control mechanism comprises an assembly control module for determining the time of completing assembly according to the time when the distance between the first clamp and the two second clamps is equal to the preset assembly distance.

[0012] Further, the control mechanism further comprises a first parameter adjustment module for reducing the distance between the welding head and the outer edge of the sealing element according to the flatness characteristic parameter of the outer edge of the sealing element being greater than the preset flatness characteristic parameter.

[0013] Further, the control mechanism further comprises a second parameter adjustment module for reducing the rotating speed of the first rotating mechanism according to the welding characteristic parameter being greater than or equal to the preset welding characteristic parameter to determine the abnormal state of welding.

[0014] Further, the control mechanism further comprises a welding head adjusting module, which is used to reduce the distance between the welding head and the magnetic pole and the sealing element according to the fact that the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element are both less than a preset heat zone distribution area, and adjust the included angle between the straight line parallel to the X axis and the welding head according to the fact that the absolute value of the difference between the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element is greater than or equal to a preset difference value, wherein the included angle between the straight line parallel to the X axis and the welding head is increased according to the fact that the heat zone distribution area of the magnetic pole is less than the heat zone distribution area of the sealing element, and the included angle between the straight line parallel to the X axis and the welding head is reduced according to the fact that the heat zone distribution area of the magnetic pole is greater than the heat zone distribution area of the sealing element.

[0015] A control method of a welding device for a magnetron, comprising:

[0016] Embedding the sealing element into the magnetic pole and assembling the sealing element with the filament fixed to the first clamp;

[0017] Driving the second clamp to rotate by the first rotating mechanism, detecting the flatness of the outer edge of the sealing element, and adjusting the distance between the welding head and the outer edge of the sealing element;

[0018] Driving the second clamp to rotate by the first rotating mechanism and welding the magnetic pole and the sealing element by the welding head;

[0019] Detecting the welding joint of the magnetic pole and the sealing element by the ultrasonic weld seam detector to determine the distribution of the weld seam;

[0020] Determining the welding characteristic parameters based on the distribution of the weld seam, determining the state of the welding according to the welding characteristic parameters, and adjusting the rotating speed of the first rotating mechanism according to the abnormal state of the welding;

[0021] Adjusting the distance between the welding head and the magnetic pole and the sealing element and adjusting the included angle between the straight line parallel to the X axis and the welding head according to the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element.

[0022] Further, the flatness detection comprises:

[0023] Obtaining the number of depressions, the area of depressions and the depth of depressions in the surface image of the outer edge of the sealing element by the image sensor and calculating the product of the three to determine the flatness characteristic parameters;

[0024] Comparing the flatness characteristic parameters with the preset flatness characteristic parameters;

[0025] If the flatness characteristic parameters are greater than the preset flatness characteristic parameters, the distance between the welding head and the outer edge of the sealing element is reduced.

[0026] Further, determining the state of the welding according to the welding characteristic parameter comprises:

[0027] Obtaining the welding characteristic parameter;

[0028] Comparing the welding characteristic parameter with the preset welding characteristic parameter;

[0029] If the welding characteristic parameter is greater than or equal to the preset welding characteristic parameter, determining that the welding state is abnormal.

[0030] Further, if the state of the welding is abnormal, reducing the rotating speed of the first rotating mechanism.

[0031] Further, adjusting the distance between the welding head and the magnetic pole and the sealing element and adjusting the included angle between the welding head and the straight line parallel to the X-axis according to the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element, comprising:

[0032] Obtaining the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element;

[0033] Comparing the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element with the preset heat zone distribution area respectively,

[0034] If the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element are both less than the preset heat zone distribution area, reducing the distance between the welding head and the magnetic pole and the sealing element;

[0035] Calculating the absolute value of the difference between the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element;

[0036] Comparing the absolute value of the difference between the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element with the preset difference value;

[0037] If the absolute value of the difference between the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing element is greater than or equal to the preset difference value, adjusting the included angle between the welding head and the straight line parallel to the X-axis;

[0038] If the heat zone distribution area of the magnetic pole is less than the heat zone distribution area of the sealing element, increasing the included angle between the welding head and the straight line parallel to the X-axis;

[0039] If the heat zone distribution area of the magnetic pole is greater than the heat zone distribution area of the sealing element, reducing the included angle between the welding head and the straight line parallel to the X-axis.

[0040] Compared with the prior art, the beneficial effects of the present application are that by controlling the distance between the welding head and the outer edge of the sealing piece according to the flatness characteristic parameter of the outer edge of the sealing piece, the problem that the welding head is set at the equidistance between the sealing piece and the magnetic pole in the prior art, which causes the distance between the welding head and the concave part of the sealing piece to be farther than the distance between the welding head and the magnetic pole, resulting in insufficient heating of the sealing piece and uneven heating of the sealing piece and the magnetic pole, is solved, and the uniform heating of the welding head on the sealing piece and the magnetic pole is realized, and the welding quality is improved.

[0041] Further, by the welding head adjustment module of the control mechanism, if the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing piece are both less than a preset heat zone distribution area, the distance between the welding head and the magnetic pole and the sealing piece is reduced, and if the absolute value of the difference between the heat zone distribution area of the magnetic pole and the heat zone distribution area of the sealing piece is greater than or equal to a preset difference, the included angle between the straight line parallel to the X-axis and the welding head is adjusted, wherein if the heat zone distribution area of the magnetic pole is less than the heat zone distribution area of the sealing piece, the included angle between the straight line parallel to the X-axis and the welding head is increased, and if the heat zone distribution area of the magnetic pole is greater than the heat zone distribution area of the sealing piece, the included angle between the straight line parallel to the X-axis and the welding head is reduced, which solves the problem that the heat zone distribution area of the magnetic pole and the sealing piece is not monitored during welding in the prior art, which causes the welding head to be unable to be adjusted according to the actual heating condition of the magnetic pole and the sealing piece, resulting in the problem that the magnetic pole and the sealing piece to be welded are easily unevenly heated, and the welding quality is poor or the to-be-welded component is damaged, the welding efficiency of the welding head is improved, the magnetic pole and the sealing piece are not unevenly heated during welding, and the welding quality is improved.

[0042] Further, by the control mechanism, the welding characteristic parameter is determined according to the weld distribution condition, the welding state is determined according to the welding characteristic parameter, and the rotating speed of the first rotating mechanism is adjusted according to the abnormal welding state, which solves the problem of uneven weld caused by the fixed rotating speed of the traditional rotating welding, realizes the real-time rotating speed regulation and control based on the weld distribution condition, and improves the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 The structure cross-sectional view before welding of the welding device for the magnetron in the embodiment of the present application;

[0044] Figure 2 The structure cross-sectional view during welding of the welding device for the magnetron in the embodiment of the present application;

[0045] Figure 3 The overall flowchart of the control method of the welding device for the magnetron in the embodiment of the present application;

[0046] In the figure, 1 - first clamp, 2 - second clamp, 3 - sealing element, 4 - magnetic pole, 5 - pushing element, 6 - welding head, 7 - filament, 21 - fixed plate, 22 - fixed clamp, 23 - feeding channel. DETAILED DESCRIPTION

[0047] In order to make the objects and advantages of the present application clearer, the following further describes the present application with reference to examples; it should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0048] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0049] It should be noted that, in the description of the present application, the terms indicating the direction or positional relationship of "up", "down", "left", "right", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In addition, it should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0051] Please refer to Figure 1 , Figure 2 and Figure 3 , which are respectively a structure cross-sectional schematic diagram before welding, a structure cross-sectional schematic diagram during welding of the welding device for magnetron of the embodiment of the present application and an overall flow chart of the control method of the welding device for magnetron;

[0052] The welding device for magnetron of the embodiment of the present application comprises:

[0053] The clamping mechanism is used to clamp the filament 7 and comprises a first clamp 1 used to constrain the spatial position of the filament 7 and two second clamps 2 respectively arranged symmetrically on both sides of the first clamp 1, the second clamp 2 comprises a fixed plate 21 used to place the magnetic pole 4, a plurality of fixed clamps 22 used to fix the magnetic pole 4 and a feeding channel 23 provided inside and used to push the sealing element 3 into the magnetic pole 4;

[0054] a welding head 6, which is arranged close to the joint of the magnetic pole 4 and the sealing member 3, for welding the magnetic pole 4 and the sealing member 3;

[0055] a moving mechanism, which is connected with the clamping mechanism and the welding head 6, including a first moving mechanism for adjusting the distance between the two second clamps 2 and the first clamp 1 respectively, and a second moving mechanism connected with the welding head 6 for adjusting the angle between the welding head 6 and the straight line parallel to the X axis respectively;

[0056] a first rotating mechanism, which is connected with the two second clamps 2 respectively, for rotating the two second clamps 2;

[0057] a second rotating mechanism, which is connected with the welding head 6, for adjusting the angle between the welding head 6 and the straight line parallel to the X axis;

[0058] a control mechanism, which is connected with the first moving mechanism, the second moving mechanism, the first rotating mechanism, the second rotating mechanism and the detecting mechanism respectively, for determining the time when the assembly is completed according to the distance between the first clamp 1 and the two second clamps 2, adjusting the distance between the welding head 6 and the outer edge of the sealing member 3 according to the flatness characteristic parameter of the outer edge of the sealing member 3, determining the welding characteristic parameter according to the distribution of the weld, determining the state of the welding according to the welding characteristic parameter, adjusting the rotating speed of the first rotating mechanism according to the abnormal state of the welding, adjusting the distance between the welding head 6 and the magnetic pole 4 and the sealing member 3 according to the distribution area of the hot zone of the magnetic pole 4 and the sealing member 3, and adjusting the angle between the welding head 6 and the straight line parallel to the X axis;

[0059] wherein the flatness characteristic parameter is the product of the number, area and depth of the recesses in the surface image of the outer edge of the sealing member 3, the distribution of the weld includes the number and size of the weld, and the welding characteristic parameter is the product of the number and size of the weld.

[0060] The welding device in the embodiment further includes a detecting mechanism, which includes distance sensors arranged on both sides of the first clamp 1 for detecting the distance between the first clamp 1 and the two second clamps 2, image sensors arranged above the sealing member 3 for obtaining the surface image of the outer edge of the sealing member 3, an ultrasonic weld detector for detecting the distribution of the weld between the magnetic pole 4 and the sealing member 3, and an infrared thermal imager for detecting the distribution image of the hot zone between the magnetic pole 4 and the sealing member 3.

[0061] In the implementation, by controlling the mechanism to adjust the distance between the welding head 6 and the outer edge of the sealing element 3 according to the flatness characteristic parameter of the outer edge of the sealing element 3, the problem that the welding head 6 is set at the equidistance between the sealing element 3 and the magnetic pole 4, which causes the distance between the welding head 6 and the recess of the sealing element 3 to be farther than the distance between the magnetic pole 4 and the recess of the sealing element 3, and the sealing element 3 is insufficiently heated, and the sealing element 3 and the magnetic pole 4 are unevenly heated, is solved, the uniform heating of the welding head 6 to the sealing element 3 and the magnetic pole 4 is realized, and the welding quality is improved.

[0062] Specifically, the control mechanism comprises an assembly control module configured to determine the assembly completion time point when the distance between the first clamp 1 and the two second clamps 2 is equal to the preset assembly distance.

[0063] Specifically, the control mechanism further comprises a first parameter adjustment module configured to reduce the distance between the welding head 6 and the outer edge of the sealing element 3 when the flatness characteristic parameter of the outer edge of the sealing element 3 is greater than the preset flatness characteristic parameter.

[0064] Specifically, the control mechanism further comprises a second parameter adjustment module configured to reduce the rotating speed of the first rotating mechanism when the welding characteristic parameter is greater than or equal to the preset welding characteristic parameter, which determines that the welding state is abnormal.

[0065] In the implementation, by controlling the mechanism to determine the welding characteristic parameter according to the weld distribution, to determine the welding state according to the welding characteristic parameter, and to adjust the rotating speed of the first rotating mechanism according to the abnormal welding state, the problem of uneven weld caused by the fixed rotating speed of the conventional rotating welding is solved, the real-time rotating speed regulation based on the weld distribution is realized, and the welding quality is improved.

[0066] In the implementation, the control mechanism further comprises a welding head 6 adjustment module, which is used to reduce the distance between the welding head 6 and the magnetic pole 4 and the sealing element 3 according to the fact that the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 are both less than a preset heat zone distribution area, and adjust the included angle between the straight line parallel to the X axis of the welding head 6 according to the fact that the absolute value of the difference between the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 is greater than or equal to a preset difference value, wherein the included angle between the straight line parallel to the X axis of the welding head 6 is increased according to the fact that the heat zone distribution area of the magnetic pole 4 is less than the heat zone distribution area of the sealing element 3, and the included angle between the straight line parallel to the X axis of the welding head 6 is reduced according to the fact that the heat zone distribution area of the magnetic pole 4 is greater than the heat zone distribution area of the sealing element 3. The problem that the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 cannot be monitored during welding in the prior art, so that the welding head 6 cannot be adjusted according to the actual heating conditions of the magnetic pole 4 and the sealing element 3, and the problem that the welded magnetic pole 4 and sealing element 3 are prone to uneven heating during welding, resulting in poor welding quality or even damage to the welded parts, are solved. The welding efficiency of the welding head 6 is improved, and the problem of uneven heating of the magnetic pole 4 and the sealing element 3 during welding is avoided, thereby improving the welding quality.

[0067] A control method of a welding device for a magnetron, comprising:

[0068] Step S1, embedding the sealing element 3 into the magnetic pole 4 and assembling with the filament 7 fixed to the first clamp 1;

[0069] The above step S1 is specifically:

[0070] The sealing element 3 is loaded into the feeding channel 23, the magnetic pole 4 is placed on the fixed plate 21 and clamped with the fixed clamp 22;

[0071] The sealing element 3 is pushed by the pushing element 5 until it is embedded in the magnetic pole 4;

[0072] The filament 7 is fixed to the first clamp 1, the second clamp is moved by the first moving mechanism, the distance between the first clamp and the second clamp is reduced, and when the distance between the first clamp and the two second clamps is equal to a preset assembly distance, the assembly is completed.

[0073] Step S2, pre-rotating the second clamp 2 by the first rotating mechanism, and detecting the flatness of the outer edge of the sealing element 3 to adjust the distance between the welding head 6 and the outer edge of the sealing element 3;

[0074] Step S3, rotating the second clamp 2 by the first rotating mechanism and welding the magnetic pole 4 and the sealing element 3 by the welding head 6;

[0075] Step S4, detecting the welding joint of the magnetic pole 4 and the sealing element 3 after welding by an ultrasonic welding seam detector to determine the welding seam distribution;

[0076] Step S5, determining the welding characteristic parameter based on the weld distribution, determining the welding state according to the welding characteristic parameter, and adjusting the rotating speed of the first rotating mechanism according to the abnormal welding state;

[0077] Step S6, adjusting the distance between the welding head 6 and the magnetic pole 4 and the sealing element 3 and adjusting the included angle between the welding head 6 and the straight line parallel to the X axis according to the heat zone distribution area of the magnetic pole 4 and the sealing element 3.

[0078] Specifically, the flatness detection comprises:

[0079] The number of depressions, the area of depressions and the depth of depressions in the sealing element 3 outer edge surface image are acquired by the image sensor, and the flatness characteristic parameter is determined by calculating the product of the three.

[0080] The flatness characteristic parameter is compared with the preset flatness characteristic parameter.

[0081] If the flatness characteristic parameter is greater than the preset flatness characteristic parameter, the distance between the welding head 6 and the outer edge of the sealing element 3 is reduced.

[0082] Specifically, the welding state is determined according to the welding characteristic parameter, which comprises:

[0083] The welding characteristic parameter is acquired.

[0084] The welding characteristic parameter is compared with the preset welding characteristic parameter.

[0085] If the welding characteristic parameter is greater than or equal to the preset welding characteristic parameter, it is determined that the welding state is abnormal.

[0086] Specifically, if the welding state is abnormal, the rotating speed of the first rotating mechanism is reduced.

[0087] Specifically, the distance between the welding head 6 and the magnetic pole 4 and the sealing element 3 and the included angle between the welding head 6 and the straight line parallel to the X axis are adjusted according to the heat zone distribution area of the magnetic pole 4 and the sealing element 3, which comprises:

[0088] The heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 are acquired.

[0089] The heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 are compared with the preset heat zone distribution area respectively.

[0090] If the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing element 3 are both less than the preset heat zone distribution area, the distance between the welding head 6 and the magnetic pole 4 and the sealing element 3 is reduced.

[0091] calculating an absolute value of a difference between the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing member 3;

[0092] comparing the absolute value of the difference between the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing member 3 with a preset difference value;

[0093] if the absolute value of the difference between the heat zone distribution area of the magnetic pole 4 and the heat zone distribution area of the sealing member 3 is greater than or equal to the preset difference value, adjusting the included angle of the straight line parallel to the X axis with the welding head 6;

[0094] if the heat zone distribution area of the magnetic pole 4 is less than the heat zone distribution area of the sealing member 3, increasing the included angle of the straight line parallel to the X axis with the welding head 6;

[0095] if the heat zone distribution area of the magnetic pole 4 is greater than the heat zone distribution area of the sealing member 3, decreasing the included angle of the straight line parallel to the X axis with the welding head 6.

[0096] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical scheme after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A welding device for a magnetron, characterized in that The application relates to a sealing assembly device for a lamp filament, comprising: a clamping mechanism for clamping the lamp filament, including a first clamp for restricting the spatial position of the lamp filament and two second clamps symmetrically arranged on the two sides of the first clamp, the second clamps including a fixed plate for placing a magnetic pole, a plurality of fixed clamps for fixing the magnetic pole and an internal feeding channel provided with a pushing piece for pushing the sealing piece into the magnetic pole; a welding head arranged near the joint of the magnetic pole and the sealing piece for welding the magnetic pole and the sealing piece; a moving mechanism connected with the clamping mechanism and the welding head, including a first moving mechanism for adjusting the distance between the two second clamps and the first clamp respectively and a second moving mechanism connected with the welding head for adjusting the distance between the welding head and the magnetic pole and the sealing piece respectively; a first rotating mechanism connected with the two second clamps respectively for rotating the two second clamps; a second rotating mechanism connected with the welding head for adjusting the included angle of the welding head with the straight line parallel to the X axis; a control mechanism connected with the first moving mechanism, the second moving mechanism, the first rotating mechanism, the second rotating mechanism and a detection mechanism respectively for determining the assembly completion time according to the distance between the first clamp and the two second clamps, adjusting the distance between the welding head and the outer edge of the sealing piece according to the flatness characteristic parameter of the outer edge of the sealing piece, determining the welding characteristic parameter according to the distribution of the welding seam, determining the welding state according to the welding characteristic parameter, adjusting the rotating speed of the first rotating mechanism according to the abnormal welding state, adjusting the distance between the welding head and the magnetic pole and the sealing piece according to the heat area distribution of the magnetic pole and the sealing piece and adjusting the included angle of the welding head with the straight line parallel to the X axis. The control mechanism comprises an assembly control module for determining the assembly completion time according to the time when the distance between the first clamp and the two second clamps is equal to the preset assembly distance. The control mechanism further comprises a first parameter adjustment module for reducing the distance between the welding head and the outer edge of the sealing piece according to the flatness characteristic parameter of the outer edge of the sealing piece being greater than the preset flatness characteristic parameter. The control mechanism further comprises a second parameter adjustment module for reducing the rotating speed of the first rotating mechanism according to the welding characteristic parameter being greater than or equal to the preset welding characteristic parameter. The control mechanism further comprises a welding head adjustment module for reducing the distance between the welding head and the magnetic pole and the sealing piece according to the heat area distribution of the magnetic pole and the sealing piece being less than the preset heat area distribution, adjusting the included angle of the welding head with the straight line parallel to the X axis according to the absolute value of the difference between the heat area distribution of the magnetic pole and the heat area distribution of the sealing piece being greater than or equal to the preset difference, increasing the included angle of the welding head with the straight line parallel to the X axis according to the heat area distribution of the magnetic pole being less than the heat area distribution of the sealing piece and reducing the included angle of the welding head with the straight line parallel to the X axis according to the heat area distribution of the magnetic pole being greater than the heat area distribution of the sealing piece. The application further relates to a sealing assembly method for a lamp filament, comprising the following steps: embedding a sealing piece into a magnetic pole and assembling the sealing piece with a lamp filament fixed to a first clamp. ​ 2. The welding device for magnetrons according to claim 1, characterized in that ​ 3. The welding device for magnetrons according to claim 2, characterized in that ​ 4. The welding device for magnetrons according to claim 3, characterized in that ​ 5. The welding device for magnetrons according to claim 4, characterized in that ​ 6. A control method for the welding device for magnetrons as claimed in claims 1-5, characterized in that, ​ ​ The first rotating mechanism drives the second clamp to rotate and the welding head welds the magnetic pole and the seal; The first rotating mechanism drives the second clamp to rotate and the welding head welds the magnetic pole and the seal; The welding joint of the magnetic pole and the seal is detected by an ultrasonic weld seam detector to determine the weld seam distribution; The welding characteristic parameters are determined based on the weld seam distribution, and the welding state is determined according to the welding characteristic parameters, and the rotating speed of the first rotating mechanism is adjusted according to the abnormal welding state. The distance between the welding head and the magnetic pole and the seal and the included angle of the welding head and the straight line parallel to the X-axis are adjusted according to the heat area distribution of the magnetic pole and the seal.

7. The control method of a welding device for a magnetron according to claim 6, characterized in that, The flatness detection includes: The number of recesses, the recess area and the recess depth in the seal outer edge surface image are obtained by the image sensor, and the flatness characteristic parameters are determined by calculating the product of the three; The flatness characteristic parameters are compared with the preset flatness characteristic parameters; If the flatness characteristic parameters are greater than the preset flatness characteristic parameters, the distance between the welding head and the seal outer edge is reduced.

8. The control method of a welding device for a magnetron according to claim 7, characterized in that, The welding state is determined according to the welding characteristic parameters, including: The welding characteristic parameters are obtained; The welding characteristic parameters are compared with the preset welding characteristic parameters; If the welding characteristic parameters are greater than or equal to the preset welding characteristic parameters, the welding state is determined to be abnormal.

9. The control method of a welding device for a magnetron according to claim 8, characterized in that, If the welding state is abnormal, the rotating speed of the first rotating mechanism is reduced.

10. The control method of a welding device for a magnetron according to claim 9, characterized in that, The distance between the welding head and the magnetic pole and the seal and the included angle of the welding head and the straight line parallel to the X-axis are adjusted according to the heat area distribution of the magnetic pole and the seal, including: The heat area distribution of the magnetic pole and the heat area distribution of the seal are obtained; The heat area distribution of the magnetic pole and the heat area distribution of the seal are compared with the preset heat area distribution respectively, If the heat area distribution of the magnetic pole and the heat area distribution of the seal are both less than the preset heat area distribution, the distance between the welding head and the magnetic pole and the seal is reduced; The absolute value of the difference between the heat area distribution of the magnetic pole and the heat area distribution of the seal is calculated; The absolute value of the difference between the heat area distribution of the magnetic pole and the heat area distribution of the seal is compared with the preset difference value; If the absolute value of the difference between the heat area distribution of the magnetic pole and the heat area distribution of the seal is greater than or equal to the preset difference value, the included angle of the welding head and the straight line parallel to the X-axis is adjusted; If the heat area distribution of the magnetic pole is less than the heat area distribution of the seal, the included angle of the welding head and the straight line parallel to the X-axis is increased; If the heat area distribution of the magnetic pole is greater than the heat area distribution of the seal, the included angle of the welding head and the straight line parallel to the X-axis is reduced.

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