A kind of magnetron cathode end cap and anode cylinder eccentric adjusting device

Abstract

This utility model discloses an eccentric adjustment device for the cathode end cap and anode cylinder of a magnetron, including an indexing turntable assembly and a carrier cylinder. The indexing turntable assembly has a turntable, and the carrier cylinder is rotatably mounted on the turntable. It also includes a vision system, comprising a camera for upward imaging of the output end cap and the connecting ring; a carrier cylinder rotation drive mechanism for driving the magnetron assembly to rotate, including a carrier cylinder servo motor that drives the carrier cylinder to rotate; a pressing assembly, including a pressing block servo motor and a pressing block for pressing down the top outer periphery of the ceramic shaft, the pressing block servo motor driving the pressing block to move up and down; and a control system, which is signal-connected to the vision system and controls the indexing turntable assembly, the carrier cylinder rotation drive mechanism, and the pressing assembly. This eccentric adjustment device for the magnetron cathode end cap and anode cylinder improves the effectiveness of eccentric adjustment and increases work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for magnetron production, specifically to a device for adjusting the eccentricity of the cathode end cap and anode cylinder of a magnetron. Background Technology

[0002] Currently, microwave ovens are equipped with magnetrons, such as the "magnetron" in Chinese invention patent publication number CN105679627A and the "magnetron" in Chinese utility model patent publication number CN217081897U. The magnetron has a cathode, with cathode end caps at both ends. The cathode end caps include an input-side cap and an output-side cap. The magnetron has a central support rod, one end of which is fixedly connected to a ceramic shaft. The output-side cap is coaxially located at the corresponding end of the central support rod. The output-side cap needs to be coaxially aligned with the anode cylinder to ensure equal clearance between the output-side cap and the inner ends of each blade. However, the magnetron components inevitably have some degree of deformation. Positional and dimensional errors can occasionally cause the output-side end cap to exceed the eccentricity limit, or even cause the output-side end cap to contact the blades. Therefore, during the assembly of the magnetron, the eccentricity of the output-side end cap must be checked before sealing the anode cylinder of the magnetron. Currently, this is done by visual inspection by workers. If the output-side end cap is found to be significantly eccentric, it is manually adjusted with tools. In some cases, it may be necessary to disassemble the magnetron assembly (i.e., the incompletely assembled magnetron) and plastically deform the metal seal or central support rod to adjust it. However, manual adjustment is highly dependent on the worker's work condition and skill level, which is not conducive to improving the effectiveness and efficiency of eccentricity adjustment. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for adjusting the eccentricity of the cathode end cap and anode cylinder of a magnetron, which is beneficial to improving the effectiveness of eccentricity adjustment and improving work efficiency.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] This utility model discloses a magnetron cathode end cap and anode cylinder eccentricity adjustment device, including an indexing turntable assembly and a carrier cylinder for vertically placing the magnetron assembly. The indexing turntable assembly has a turntable, and the carrier cylinder is rotatably mounted on the turntable. It also includes a vision system for detecting the eccentricity of the output end cap of the magnetron assembly relative to the connecting ring. The vision system includes a camera for upward-facing images of the output end cap and the connecting ring, and the camera is fixedly mounted. Furthermore, it includes a carrier cylinder rotation drive mechanism for driving the magnetron assembly to rotate. The carrier cylinder rotation drive mechanism includes a carrier cylinder servo motor, which drives the carrier cylinder to rotate. It also includes a pressing assembly, which includes a pressure block servo motor and a pressure block for pressing down the top outer periphery of the ceramic shaft. The pressure block servo motor drives the pressure block to move up and down. Finally, it includes a control system, which is signal-connected to the vision system and controls the indexing turntable assembly, the carrier cylinder rotation drive mechanism, and the pressing assembly.

[0006] Preferably, the upper end of the carrier cylinder is formed with an inner ring step for adapting to the lower end of the anode cylinder supporting the magnetron assembly, and the carrier cylinder is formed with a central through hole, the inner ring step being coaxially arranged with the central through hole.

[0007] Preferably, a driven wheel is coaxially provided at the lower end of the carrier cylinder, and the carrier cylinder rotation drive mechanism includes a driving wheel and a pushing cylinder. The driving wheel is mounted on the output shaft of the carrier cylinder servo motor, and the pushing cylinder drives the carrier cylinder servo motor to move horizontally. The driving wheel and the driven wheel are arranged parallel to each other, and the driving wheel can contact the driven wheel.

[0008] Preferably, the pressing assembly includes a lifting plate that slides up and down, a pressing block is disposed on the lower side of one end of the lifting plate, and a pressing block servo motor is connected to the corresponding other end of the lifting plate via a ball screw pair.

[0009] Preferably, the pressure block is detachably connected to the lifting plate.

[0010] Compared with the prior art, the advantages of this utility model are as follows: By setting an indexing turntable assembly and a carrier cylinder for vertically placing the magnetron assembly, the indexing turntable assembly has a turntable, the carrier cylinder is rotatably mounted on the turntable, and a vision system for detecting the eccentricity of the output end cap of the magnetron assembly relative to the connecting ring is also provided. The vision system includes a camera for shooting upwards at the output end cap and the connecting ring, the camera is fixedly mounted, and a carrier cylinder rotation drive mechanism for driving the magnetron assembly to rotate is also provided. The carrier cylinder rotation drive mechanism includes a carrier cylinder servo motor. A servo motor drives the carrier cylinder to rotate. A pressing assembly is also provided, including a pressing block servo motor and a pressing block for pressing down the top outer periphery of the ceramic shaft. The pressing block servo motor drives the pressing block to move up and down. A control system signal is connected to a vision system. The control system controls the indexing turntable assembly, the carrier cylinder rotation drive mechanism, and the pressing assembly. This allows the magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model to replace manual detection of the eccentricity of the output end cap and to adjust the eccentricity of the output end cap, which is beneficial to improving the effectiveness of eccentricity adjustment and improving work efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model.

[0012] Figure 2 This is a cross-sectional structural schematic diagram of the magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model.

[0013] Figure 3 for Figure 2 A partial structural diagram.

[0014] Figure 4 This is a bottom-view three-dimensional structural diagram of the magnetron assembly.

[0015] Figure 5 This is a top-view three-dimensional structural diagram of the magnetron assembly.

[0016] Figure 6 This is a cross-sectional structural diagram of a magnetron assembly.

[0017] Labeling Explanation: Indexing turntable assembly 1; Turntable servo motor 11; Cam divider 12; Synchronous belt 13; Turntable 14; Carrier cylinder 2; Inner ring step 201; Central through hole 202; Driven wheel 21; Carrier cylinder rotation drive mechanism 3; Drive wheel 31; Carrier cylinder servo motor 32; Push cylinder 33; Camera 4; Pressing assembly 5; Pressing block 51; Pressing block servo motor 52; Ball screw pair 53; Lifting plate 54; Magnetron assembly 99; Output side cap 991; Interlocking ring 992; Ceramic shaft 993; Top outer periphery 9931; Anode cylinder 994; Open end 9940; Sealing body 995; Top cover 9951; Central support rod 996; Magnetic pole part 997; Blade 998. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] The present invention relates to an eccentric adjustment device for the cathode end cap and anode cylinder of a magnetron, such as... Figures 1 to 3 As shown, the assembly includes an indexing turntable assembly 1 and a carrier cylinder 2 for vertically placing the magnetron assembly 99. Specifically, the axis of the anode cylinder 994 of the magnetron assembly 99 placed on the carrier cylinder 2 is along the vertical direction. The indexing turntable assembly 2 has a turntable 14. Specifically, the indexing turntable assembly 2 also includes a turntable servo motor 11 and a cam divider 12. The turntable servo motor 11 is driven and connected to the input end of the cam divider 12 via a synchronous belt 13. The turntable 14 is installed at the output end of the cam divider 12, so the turntable servo motor 11 can drive the turntable 14 to rotate horizontally. The carrier cylinder 2 is rotatably mounted on the turntable 14. Specifically, there can be four carrier cylinders 2, which are evenly distributed circumferentially on the outer periphery of the turntable 14. That is, the cam divider 12 is a four-position cam divider. Figures 1 to 3 As shown, the magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model also includes a vision system for detecting the eccentricity of the output-side end cap 991 of the magnetron assembly 99 relative to the interlocking ring 992. The vision system includes a camera 4 for shooting upwards at the output-side end cap 991 and the interlocking ring 992. The camera 4 is fixedly installed and can be mounted on one side of the housing of the cam divider 12 via a bracket. Figures 1 to 3 As shown, the eccentric adjustment device between the cathode end cap and the anode cylinder of this utility model also includes a carrier cylinder rotation drive mechanism 3 for driving the magnetron assembly 99 to rotate. The rotation of the magnetron assembly 99 refers to the rotation of the magnetron assembly 99 around the axis of the anode cylinder 994. The carrier cylinder rotation drive mechanism 3 includes a carrier cylinder servo motor 32, which drives the carrier cylinder 2 to rotate. Figure 3 As shown, the axis of the carrier cylinder 2 is along the vertical direction. A rotating support is mounted on the turntable 14, and the carrier cylinder 2 coaxially passes through the rotating support. The carrier cylinder 2 and the rotating support are connected by an angular contact ball bearing. Figures 1 to 3 As shown, the eccentric adjustment device between the cathode end cap and anode cylinder of the magnetron of this utility model also includes a pressing component 5. The pressing component 5 includes a pressing block servo motor 52 and a pressing block 51 for pressing down the top outer periphery 9931 of the ceramic shaft 993. Figure 5 The top outer periphery 9931 of the ceramic shaft 993 of the magnetron is shown, and the pressure block servo motor 52 drives the pressure block 51 to move up and down. The magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model also includes a control system. The control system is signal-connected to the vision system, and the control system controls the indexing turntable assembly 2, the carrier cylinder rotation drive mechanism 3, and the pressing assembly 5. Examples of the vision system of this utility model can be found in Chinese Invention Patent Application Publication No. CN111707220A, "Concentricity Alignment Recognition Vision System," and Chinese Utility Model Patent Publication No. CN209485301U, "Concentricity Detection Platform."

[0020] The following is a brief explanation of the working principle of the magnetron cathode end cap and anode cylinder eccentricity adjustment device of this utility model: Figures 1 to 6 As shown, the magnetron assembly 99 is placed vertically onto the carrier cylinder 2 at the loading station by hand or a loading robot. The turntable servo motor 11 drives the turntable 14 to rotate, causing the magnetron assembly 99 on the carrier cylinder 2 to revolve (i.e., rotate around the axis of the turntable 14) to the inspection station. Figure 1 and Figure 2 As shown, at this time, camera 4 is located directly below the anode cylinder 994 (camera 4 is also directly below the carrier cylinder 2). The control system causes the vision system to detect the eccentricity of the output end cap 991 of the magnetron assembly 99 in the detection station relative to the interlocking ring 992. Specifically, the ceramic shaft 993 of the magnetron assembly 99 placed on the carrier cylinder 2 is located above the anode cylinder 994. The upper end of the anode cylinder 994 is covered by the corresponding magnetic pole part 997 and the sealing body 995, while the lower end of the anode cylinder 994 still retains the open end 9940. That is to say, the lower end of the anode cylinder 994 of the magnetron assembly 99 (the magnetron that has not been fully assembled) has not yet been fitted with the corresponding magnetic pole part. Therefore, the vision system controls camera 4 to capture images of the interlocking ring through the open end 9940. The system uses a combination of a series of interconnecting elements 992 and an output-side cap 991 to obtain a detection image. The vision system analyzes and calculates this image, specifically analyzing the eccentricity of the center of the output-side cap 991 relative to the center of the series 992, as well as the eccentricity orientation (eccentricity angle) of the output-side cap 991. If the eccentricity does not exceed a preset threshold, the vision system signals the control system, which records the magnetron assembly 99 as a good product. If the eccentricity exceeds the preset threshold, the vision system signals the control system, which records the magnetron assembly 99 as a defective product. Furthermore, the control system controls the carrier cylinder rotation drive mechanism 3 to rotate the carrier cylinder 2 and the magnetron assembly 99 at the detection station, thereby locating the eccentricity angle of the output-side cap 991. Figure 2 In the visual direction, for example, the carrier cylinder servo motor 32 drives the center of the eccentric output-side cap 991 to rotate to the exact left of the center of the interlocking ring 992, and then the control system controls the pressure block servo motor 52 to drive the pressure block 51 to move downwards, as shown. Figure 2 and Figure 6As shown, the pressure block 51 presses down on the top outer periphery 9931, and the ceramic shaft 993 applies downward pressure to the left end of the top cover 9951 of the sealing body 995, causing a slight plastic deformation of the left end (i.e., one side) of the top cover 9951 of the sealing body 995, causing the ceramic shaft 993 to tilt slightly to the left. Since the upper end of the central support rod 996 is fixedly connected to the ceramic shaft 993, the lower end of the central support rod 996 swings and shifts to the right. Since the output end cap 991 is coaxially connected to the lower end of the central support rod 996, the output end cap 991 moves and adjusts to the right, thereby shifting the center of the output end cap 991. During this process, the control system... The downward movement of the pressure block 51 is calculated based on the eccentricity of the output-side cap 991 detected by the vision system. Since the seal 995 will have a certain degree of rebound after the pressure block 51 leaves the ceramic shaft 993, the rightward movement of the output-side cap 991 is slightly greater than its eccentricity. Then, the control system instructs the vision system to capture images of the output-side cap 991 and the connecting ring 992. The vision system then analyzes the eccentricity of the output-side cap 991. If the vision system's analysis of the center position of the output-side cap 991 meets the requirements, the control system controls the pressure block servo motor 52 to drive the pressure block 51. If the center position of the output end cap 991 is not in compliance with the requirements after the vision system analyzes the upward reset, the control system controls the pressure block servo motor 52 to drive the pressure block 51 to move down slightly. Then the camera 4 takes a detection image again. This cycle continues until the center position of the output end cap 991 meets the requirements. After the pressure block 51 is reset upward (the output end cap 991 moves slightly to the left due to the rebound of the seal 995), the control system causes the camera 4 to take a detection image again. The vision system analyzes the concentricity of the output end cap 991 and the connecting ring 992. If it meets the requirements, the control system controls the turntable 14 to rotate, so that the magnetron assembly 99 with the eccentric adjustment is transferred to the next station, and at the same time, the next magnetron assembly 99 is transferred to the detection station. If the concentricity of the output end cap 991 and the connecting ring 992 is not in compliance with the requirements after the pressure block 51 is reset upward, the control system controls the carrier cylinder rotation drive mechanism 3 to drive the magnetron assembly 99 to rotate, that is, to perform the eccentric adjustment action again. Magnetron assemblies 99 that pass inspection (either good or defective after eccentric adjustment) can be picked up by a robotic arm at the unloading station. Since the control system has recorded whether the magnetron assembly 99 is good or bad, the robotic arm can separate good and defective products for unloading. As can be seen above, the eccentric adjustment device for the magnetron cathode end cap and anode cylinder of this invention can replace manual detection of the eccentricity of the output end cap 991 and perform eccentricity adjustment, which improves the effectiveness of eccentricity adjustment and increases work efficiency. Figure 4 and Figure 6As shown, since the blades 998 of the magnetron are set inside the anode cylinder 994 and the blades 998 are circumferentially distributed around the axis of the anode cylinder 994, and each blade 998 is engaged with the connecting ring 992, the connecting ring 992 and the blades 998 are mutually positioned. The connecting ring 992 and the anode cylinder 994 have high concentricity accuracy. Therefore, when the concentricity of the connecting ring 992 and the output end cap 991 meets the requirements, the output end cap 991 will not contact the blades 998.

[0021] Furthermore, such as Figure 3 As shown, the upper end of the carrier cylinder 2 has an inner ring step 201 for adapting to the lower end of the anode cylinder 994 that supports the magnetron assembly 99. The carrier cylinder 2 has a central through hole 202. The inner ring step 201 is coaxially arranged with the central through hole 202. That is, the bottom surface of the inner ring step 201 is close to the lower end surface of the supporting anode cylinder 994, and the side surface of the inner ring step 201 is an inner cylindrical surface. The side surface of the inner ring step 201 is close to the outer cylindrical surface of the anode cylinder 994, thereby providing good support and positioning for the magnetron assembly 99. The upper end of the carrier cylinder 2 has a flared opening.

[0022] Furthermore, such as Figure 3 As shown, a driven wheel 21 is coaxially mounted on the lower end of the carrier cylinder 2. The driven wheel 21 is sleeved on the outer side of the lower end of the carrier cylinder 2, so the driven wheel 21 will not block the central through hole 202. Figure 1 and Figure 2 As shown, the carrier cylinder rotation drive mechanism 3 includes a drive wheel 31 and a push cylinder 33. The drive wheel 31 is coaxially mounted on the output shaft of the carrier cylinder servo motor 32. The push cylinder 33 drives the carrier cylinder servo motor 32 to move horizontally. The push cylinder 33 can be a three-bar cylinder. A motor mount is mounted on the piston rod of the push cylinder 33. The motor mount is connected to the carrier cylinder servo motor 32. The drive wheel 31 and the driven wheel 21 are arranged parallel to each other, and the drive wheel 31 can contact the driven wheel 21. Specifically, after the magnetron assembly 99 is transferred to the inspection station, the control system controls the push cylinder 33 to drive the cylinder horizontally. The driving wheel 31 pushes against the driven wheel 21, causing the outer cylindrical surface of the driving wheel 31 to come into frictional contact with the outer cylindrical surface of the driven wheel 21. Then, the control system controls the servo motor 32 of the carrier cylinder to operate, causing the driving wheel 31 to rotate. The driving wheel 31 drives the driven wheel 21 and the carrier cylinder 2 to rotate through friction. During this process, the inner ring step 201 drives the magnetron assembly 99 to rotate through friction. The driving wheel 31 has a rubber outer layer. As mentioned above, after the eccentric adjustment of the magnetron assembly 99 is completed, the control system first controls the push cylinder 33 to drive the driving wheel 31 away from the driven wheel 21, and then the control system controls the turntable 14 to rotate. The above-mentioned carrier cylinder rotation drive mechanism 3 is set independently of the turntable 14, so only one carrier cylinder rotation drive mechanism 3 is needed to effectively drive the magnetron assembly 99 in the detection position to rotate. The above-mentioned drive connection structure between the driving wheel 31 and the driven wheel 21 is simple and easy to realize transmission clutch. Figure 1 and Figure 2 As shown, camera 4 captures images of the output-side cap 991 and the connecting ring 992 through the central through-hole 202.

[0023] Furthermore, such as Figure 1 and Figure 2 As shown, the pressing assembly 5 includes a lifting plate 54, which is slidably arranged up and down. The pressing assembly 5 also has a support frame. Specifically, the lifting plate 54 is slidably connected to the support frame via a linear bearing. The pressing block servo motor 52 is installed on the top of the support frame. The pressing block 51 is located on the lower side of one end of the lifting plate 54. The pressing block servo motor 52 is connected to the corresponding other end of the lifting plate 54 via a ball screw pair 53. The axis of the ball screw pair 53 is along the up and down direction. The above structure allows the pressing block 51 to extend above the magnetron assembly 99. The pushing cylinder 33 can be installed on the support frame.

[0024] Furthermore, the pressure block 51 is detachably connected to the lifting plate 54. Specifically, the lifting plate 54 has an elongated hole, through which a screw passes and is screwed to the pressure block 51. The right end of the pressure block 51 has a protrusion, which is used to contact the top outer periphery 9931 of the ceramic shaft 993. The pressure block 51 can be replaced by removing the screw.

Claims

1. A device for adjusting the eccentricity of the cathode end cap and anode cylinder of a magnetron, characterized in that: The system includes an indexing turntable assembly (1) and a carrier cylinder (2) for vertically placing the magnetron assembly (99). The indexing turntable assembly (1) is provided with a turntable (14), and the carrier cylinder (2) is rotatably mounted on the turntable (14). The system also includes a vision system for detecting the eccentricity of the output end cap (991) of the magnetron assembly (99) relative to the connecting ring (992). The vision system includes a camera (4) for shooting upwards at the output end cap (991) and the connecting ring (992). The camera (4) is fixedly mounted. The system also includes a carrier cylinder rotation drive mechanism (3) for driving the magnetron assembly (99) to rotate. The carrier cylinder rotation drive mechanism (3) includes a carrier cylinder servo motor (32), which drives the carrier cylinder (2) to rotate; it also includes a pressing assembly (5), which includes a pressing block servo motor (52) and a pressing block (51) for pressing down the top outer periphery (9931) of the ceramic shaft (993), and the pressing block servo motor (52) drives the pressing block (51) to move up and down; it also includes a control system, which is signal-connected to the vision system, and the control system controls the indexing turntable assembly (1), the carrier cylinder rotation drive mechanism (3) and the pressing assembly (5).

2. The magnetron cathode end cap and anode cylinder eccentricity adjustment device according to claim 1, characterized in that: The upper end of the carrier cylinder (2) is formed with an inner ring step (201) for adapting to the lower end of the anode cylinder (994) supporting the magnetron assembly (99). The carrier cylinder (2) is formed with a central through hole (202). The inner ring step (201) and the central through hole (202) are arranged coaxially.

3. The magnetron cathode end cap and anode cylinder eccentricity adjustment device according to claim 2, characterized in that: The lower end of the carrier cylinder (2) is coaxially provided with a passive wheel (21). The carrier cylinder rotation drive mechanism (3) includes a drive wheel (31) and a push cylinder (33). The drive wheel (31) is mounted on the output shaft of the carrier cylinder servo motor (32). The push cylinder (33) drives the carrier cylinder servo motor (32) to move horizontally. The drive wheel (31) and the passive wheel (21) are arranged in parallel. The drive wheel (31) can contact the passive wheel (21).

4. The magnetron cathode end cap and anode cylinder eccentricity adjustment device according to claim 1, characterized in that: The pressing component (5) includes a lifting plate (54), which is slidably arranged up and down. The pressing block (51) is arranged on the lower side of one end of the lifting plate (54). The pressing block servo motor (52) is connected to the other end of the lifting plate (54) through a ball screw pair (53).

5. The magnetron cathode end cap and anode cylinder eccentricity adjustment device according to claim 4, characterized in that: The pressure block (51) and the lifting plate (54) are detachably connected.

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