Omnibearing anodic oxidation device for inner cavity of shell

Abstract

The utility model provides an omni-directional anodizing device for an inner cavity of a shell. The omni-directional anodizing device comprises an oxidation pond for bearing electrolyte, an anode assembly for fixing a workpiece for anodizing, and a cathode assembly arranged corresponding to the anode assembly, the cathode assembly is provided with a cathode extending-in assembly extending into the inner cavity of the shell, and the cathode assembly and the cathode extending-in assembly are connected together through a detachable part; the detachable part comprises a first detachable part arranged on the cathode assembly and a second detachable part arranged on the cathode stretching-in assembly, and in actual work, the cathode stretching-in assembly stretches into the inner cavity of the shell, so that current distribution on the surface of the inner cavity becomes relatively uniform, and a high-quality oxidation film is formed in the inner cavity; the cathode extension assembly is rapidly installed or replaced through the detachable part, modularization of a cathode tool is achieved, and the problem of adaptability of equipment to different inner cavity shapes is solved.

Description

Technical Field

[0001] This utility model relates to the field of anodizing technology, specifically to an omnidirectional anodizing device for the inner cavity of a housing. Background Technology

[0002] In traditional anodizing technology, for shell-type parts with complex deep cavities, blind holes, or internal channels, the significant electric field shielding effect and electrolyte exchange barrier in the internal cavity make it difficult for conventional hanger conduction and overall immersion methods to establish an effective and uniform electrochemical reaction field on the inner surface. This results in low quality or even absence of the oxide film in the internal cavity, which has become a long-standing technical bottleneck in the industry.

[0003] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0004] The purpose of this invention is to provide a highly automated and versatile omnidirectional anodizing device for the inner cavity of a housing.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] An omnidirectional anodizing apparatus for a housing cavity includes an oxidation tank carrying an electrolyte, an anode assembly for fixing a workpiece for anodizing, and a cathode assembly arranged corresponding to the anode assembly. The cathode assembly has a cathode insertion component extending into the housing cavity, and the cathode assembly and the cathode insertion component are connected together by a detachable component. The detachable component includes a first detachable part on the cathode assembly and a second detachable part on the cathode insertion component. The cathode assembly includes a cathode body connected to a power source and a cathode housing accommodating the cathode body. The cathode housing includes an upper cathode housing and a lower cathode housing, which are detachably connected together. The upper cathode housing has an upper housing mounting surface facing the anode assembly, and the first detachable part is provided on the upper housing mounting surface. The cathode insertion component includes a cathode insertion member, which has a cathode insertion section extending into the housing cavity and a cathode insertion mounting section with the second detachable part.

[0007] The first detachable part includes an annular boss on the mounting surface of the upper housing and a detachable mechanism for positioning the cathode insertion assembly. The detachable mechanism includes a positioning slider for axially positioning the cathode insertion assembly, a positioning groove for accommodating the positioning slider, and a return spring disposed between the positioning slider and the positioning groove. The positioning slider has a positioning protrusion for positioning the cathode insertion assembly and a gripping part for easy disassembly and assembly. The inner cavity of the cathode insertion mounting section is provided with an annular positioning groove that matches the annular boss, and the annular positioning groove is provided with a positioning slot that matches the positioning protrusion.

[0008] The anode assembly includes a clamping mechanism for clamping and positioning the workpiece and an anode lifting mechanism for driving the clamping mechanism to move up and down.

[0009] The clamping mechanism includes two clamping blocks, a first screw that drives the two clamping blocks to move closer or further apart, a first motor that drives the first screw to rotate, and a first mounting plate that carries the first motor. The first screw is rotatably mounted on the first mounting plate, and the two clamping plates have first threaded holes that are threadedly engaged with the first screw. The first mounting plate is also provided with a first guide rod, and the two clamping plates also have first guide holes that are slidably engaged with the first guide rod.

[0010] The anode lifting mechanism includes a second screw that drives the first mounting plate to move up and down, a second motor that drives the second screw to rotate, and a first mounting bracket that carries the second motor. The second screw is rotatably mounted on the first mounting bracket, and the first mounting plate has a second threaded hole that is threadedly engaged with the second screw. The first mounting bracket is also provided with a second guide rod, and the first mounting plate also has a second guide hole that is slidably engaged with the second guide rod. The first mounting bracket is located at the upper end of the oxidation tank.

[0011] The cathode assembly also includes an insertion drive mechanism that drives the cathode insertion assembly to extend into the housing, and a cathode lifting mechanism that drives the insertion drive mechanism to move up and down.

[0012] The extension drive mechanism includes a second mounting plate connected to the cathode body, a third screw that drives the second mounting plate to move, a third motor that drives the third screw to rotate, and a third mounting plate that carries the third motor. The third screw is rotatably mounted on the third mounting plate, and a third thread that is threadedly engaged with the third screw is formed on the second mounting plate. The third mounting plate is also provided with a third guide rod, and the second mounting plate is also provided with a third guide hole that is slidably engaged with the third guide rod.

[0013] The cathode lifting mechanism includes a fourth screw that drives the third mounting plate to move up and down, a fourth motor that drives the fourth screw to rotate, and a second mounting bracket that carries the fourth motor. The fourth screw is rotatably mounted on the second mounting bracket. The third mounting plate has a fourth threaded hole that is threadedly engaged with the fourth screw. The second mounting bracket is also provided with a fourth guide rod. The third mounting plate also has a fourth guide hole that is slidably engaged with the fourth guide rod. The second mounting bracket is located at the upper end of the oxidation tank.

[0014] By adopting the above technical solution, the omnidirectional anodizing device for the inner cavity of the shell of this utility model, in actual use, involves oriented the inner cavity of the workpiece toward the cathode and clamping it in place using a clamping mechanism. Then, the workpiece is immersed in the electrolyte using an anode lifting mechanism. Next, under the action of the insertion drive mechanism and the cathode lifting mechanism, the cathode insertion section extends into the inner cavity of the workpiece. Power is then switched on, and the anodizing process begins, achieving omnidirectional anodizing of both the outer surface and the inner cavity of the workpiece. Compared with existing technologies, the omnidirectional anodizing device for the inner cavity of the shell of this utility model has advantages such as high automation and strong versatility. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention from a top view.

[0016] Figure 2 This is a top-view three-dimensional structural diagram of the cathode body, upper cathode shell, lower cathode shell, and cathode extension assembly assembled together according to this utility model.

[0017] Figure 3 This is a cross-sectional view of the cathode body, upper cathode shell, lower cathode shell, and cathode extension assembly assembled together according to this utility model.

[0018] Figure 4 for Figure 3 A partially enlarged cross-sectional view of the structure at point A in the middle;

[0019] Figure 5 A three-dimensional structural diagram of the clamping mechanism viewed from below;

[0020] Figure 6 This is a three-dimensional structural diagram of the drive mechanism viewed from below.

[0021] In the picture:

[0022] 1-Oxidation pool; 2-Anode assembly, 21-Clamping mechanism, 211-Clamping block, 212-First screw, 213-First motor, 214-First mounting plate, 215-First guide rod, 22-Anode lifting mechanism, 221-Second screw, 222-Second motor, 223-First mounting bracket, 224-Second guide rod; 3-Cathode assembly, 31-Cathode body, 32-Cathode upper shell, 321-Annular boss, 322-Detachable mechanism, 3221-Positioning slider, 32211-Positioning protrusion, 32212-Handle 3222-Positioning slide, 3223-Reset spring, 33-Lower cathode housing, 34-Extension drive mechanism, 341-Second mounting plate, 342-Third screw, 343-Third motor, 344-Third mounting plate, 345-Third guide rod, 35-Cathode lifting mechanism, 351-Fourth screw, 352-Fourth motor, 353-Second mounting bracket, 354-Fourth guide rod; 4-Cathode extension, 41-Cathode extension section, 42-Cathode extension mounting section, 421-Annular positioning groove, 422-Positioning slot. Detailed Implementation

[0023] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0024] A device for omnidirectional anodizing of the inner cavity of a housing, such as Figures 1-6 As shown, the device includes an oxidation tank 1 carrying an electrolyte, an anode assembly 2 for fixing the workpiece for anodizing, and a cathode assembly 3 arranged corresponding to the anode assembly 2. The cathode assembly 3 has a cathode insertion component extending into the inner cavity of the housing. The cathode assembly 3 and the cathode insertion component are connected together by a detachable component. The detachable component includes a first detachable part on the cathode assembly 3 and a second detachable part on the cathode insertion component. In actual operation, by extending the cathode insertion component into the inner cavity of the housing, the current distribution on the surface of the inner cavity becomes relatively uniform, thereby forming a high-quality oxide film in the inner cavity. Furthermore, the cathode insertion component can be designed according to the specific inner cavity shape of the workpiece, and then quickly installed or replaced by the detachable component, realizing the modularity of the cathode tool and solving the problem of equipment adaptability to different inner cavity shapes.

[0025] The cathode assembly 3 includes a cathode body 31 connected to a power source and a cathode housing that houses the cathode body 31. The cathode housing includes an upper cathode housing 32 and a lower cathode housing 33, which are detachably connected together. The upper cathode housing 32 has an upper housing mounting surface facing the anode assembly 2, and a first detachable part is provided on the upper housing mounting surface. The cathode insertion assembly includes a cathode insertion member 4, which has a cathode insertion section 41 extending into the inner cavity of the housing and a cathode insertion mounting section 42 with a second detachable part. The cathode housing is made into a detachable housing, which facilitates the maintenance and replacement of the cathode body 31 and the cathode insertion assembly. The first detachable part includes an annular boss 321 on the mounting surface of the upper housing and a detachable mechanism 322 for positioning the cathode insertion assembly. The detachable mechanism 322 includes a positioning slider 3221 for axial positioning of the cathode insertion assembly, a positioning groove 3222 for accommodating the positioning slider 3221, and a return spring 3223 disposed between the positioning slider 3221 and the positioning groove 3222. The positioning slider 3221 has a positioning protrusion 32211 for positioning the cathode insertion assembly and a gripping part 32212 for easy disassembly and assembly. The inner cavity of the cathode insertion mounting section 42 is provided with an annular positioning groove 421 that matches the annular boss 321, and the annular positioning groove 421 is provided with a corresponding positioning protrusion 32211. When installing the cathode insertion assembly, the matching positioning slot 422 is used. The annular boss 321 guides the insertion into the annular positioning slot 421 to complete the initial positioning and centering. During this process, the positioning slider 3221 first moves towards the center of the annular boss 321, and then moves back under the action of the return spring 3223. The positioning protrusion 32211 is locked into the positioning slot 422, realizing the rapid, accurate positioning and reliable locking of the cathode insertion part 4. The operation is simple. When it is necessary to replace the cathode insertion assembly, it is only necessary to move the holding part 32212 towards the center of the annular boss 321, so that the positioning protrusion 32211 is separated from the positioning slot 422, and the cathode insertion assembly can be quickly disassembled. The operation is simple.

[0026] The anode assembly 2 includes a clamping mechanism 21 for clamping and positioning the workpiece and an anode lifting mechanism 22 for driving the clamping mechanism 21 to move up and down. The clamping mechanism 21 is responsible for fixing the workpiece and conducting electricity, while the lifting mechanism controls the depth of the workpiece immersed in the electrolyte, thus realizing automatic clamping and station switching of the workpiece. The clamping mechanism 21 includes two clamping blocks 211, a first screw 212 that drives the two clamping blocks 211 to move closer or further apart, a first motor 213 that drives the first screw 212 to rotate, and a first mounting plate 214 that supports the first motor 213. The first screw 212 is rotatably mounted on the first mounting plate 214. The two clamping plates have first threaded holes that are threadedly engaged with the first screw 212. The first mounting plate 214 is also provided with a first guide rod 215. The two clamping plates also have first guide holes that are slidably engaged with the first guide rod 215. The clamping mechanism 21 drives the first screw 212 through the first motor 213, which drives the two clamping blocks 211 to move synchronously towards or away from each other along the first guide rod 215 to clamp or release the workpiece. The screw drive converts the rotational motion of the motor into the linear clamping motion of the clamping blocks 211, realizing the automatic clamping and station conversion of the workpiece. The anode lifting mechanism 22 includes a second screw 221 that drives the first mounting plate 214 to move up and down, a second motor 222 that drives the second screw 221 to rotate, and a first mounting bracket 223 that supports the second motor 222. The second screw 221 is rotatably mounted on the first mounting bracket 223. The first mounting plate 214 has a second threaded hole that is threadedly engaged with the second screw 221. The first mounting bracket 223 is also provided with a second guide rod 224. The first mounting plate 214 also has a second guide hole that is slidably engaged with the second guide rod 224. The first mounting bracket 223 is located at the upper end of the oxidation tank 1. The anode lifting mechanism 22 drives the second screw 221 through the second motor 222, thereby driving the entire clamping mechanism 21 to move up and down along the second guide rod 224. The screw drive controls the position of the workpiece in the vertical direction.

[0027] The cathode assembly 3 also includes an insertion drive mechanism 34 that drives the cathode insertion assembly to extend into the housing, and a cathode lifting mechanism 35 that drives the insertion drive mechanism 34 to move up and down. The insertion drive mechanism controls the cathode insertion assembly to move horizontally into and out of the workpiece cavity. The cathode lifting mechanism 35 controls the initial height of the entire cathode assembly 3, realizing the precise positioning of the cathode insertion assembly into the workpiece cavity and ensuring accurate alignment with different workpieces. The insertion drive mechanism 34 includes a second mounting plate 341 connected to the cathode body 31, a third screw 342 that drives the second mounting plate 341 to move, a third motor 343 that drives the third screw 342 to rotate, and a third mounting plate 344 that supports the third motor 343. The third screw 342 is rotatably mounted on the third mounting plate 344. The second mounting plate 341 has a third thread that is threadedly engaged with the third screw 342. The third mounting plate 344 is also provided with a third guide rod 345, and the second mounting plate 341 also has a third guide hole that is slidably engaged with the third guide rod 345. The insertion drive assembly drives the third screw 342 through the third motor 343, thereby causing the cathode body 31 and the cathode insertion assembly to move horizontally, precisely controlling the position of the insertion part in the inner cavity, and ensuring the optimal working point. The cathode lifting mechanism 35 includes a fourth screw 351 that drives the third mounting plate 344 to move up and down, a fourth motor 352 that drives the fourth screw 351 to rotate, and a second mounting bracket 353 that supports the fourth motor 352. The fourth screw 351 is rotatably mounted on the second mounting bracket 353. The third mounting plate 344 has a fourth threaded hole that is threadedly engaged with the fourth screw 351. The second mounting bracket 353 is also provided with a fourth guide rod 354, and the third mounting plate 344 also has a fourth guide hole that is slidably engaged with the fourth guide rod 354. The second mounting bracket 353 is located at the upper end of the oxidation tank 1. The cathode lifting mechanism 35 drives the fourth screw 351 through the fourth motor 352, thereby driving the entire extended drive assembly to rise and fall, adjusting the height reference of the cathode system to match it with worktables or workpieces of different heights, thus enhancing the overall adjustment and adaptability of the equipment.

[0028] The product form of this utility model is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this utility model.

Claims

1. A shell cavity omnidirectional anodizing apparatus, comprising an oxidation tank carrying an electrolyte, an anode assembly for fixing the workpiece for anodizing, and a cathode assembly arranged corresponding to the anode assembly; characterized in that: The cathode assembly has a cathode insertion component extending into the inner cavity of the housing. The cathode assembly and the cathode insertion component are connected together by a detachable part. The detachable part includes a first detachable portion on the cathode assembly and a second detachable portion on the cathode insertion component. The cathode assembly includes a cathode body connected to a power source and a cathode housing accommodating the cathode body. The cathode housing includes an upper cathode housing and a lower cathode housing, which are detachably connected together. The upper cathode housing has an upper housing mounting surface facing the anode assembly, and the first detachable portion is provided on the upper housing mounting surface. The cathode insertion component includes a cathode insertion member, which has a cathode insertion section extending into the inner cavity of the housing and a cathode insertion mounting section with the second detachable portion.

2. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 1, characterized in that: The first detachable part includes an annular boss on the mounting surface of the upper housing and a detachable mechanism for positioning the cathode insertion assembly. The detachable mechanism includes a positioning slider for axially positioning the cathode insertion assembly, a positioning groove for accommodating the positioning slider, and a return spring disposed between the positioning slider and the positioning groove. The positioning slider has a positioning protrusion for positioning the cathode insertion assembly and a gripping part for easy disassembly and assembly. The inner cavity of the cathode insertion mounting section is provided with an annular positioning groove that matches the annular boss, and the annular positioning groove is provided with a positioning slot that matches the positioning protrusion.

3. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 1, characterized in that: The anode assembly includes a clamping mechanism for clamping and positioning the workpiece and an anode lifting mechanism for driving the clamping mechanism to move up and down.

4. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 3, characterized in that: The clamping mechanism includes two clamping blocks, a first screw that drives the two clamping blocks to move closer or further apart, a first motor that drives the first screw to rotate, and a first mounting plate that carries the first motor. The first screw is rotatably mounted on the first mounting plate, and the two clamping plates have first threaded holes that are threadedly engaged with the first screw. The first mounting plate is also provided with a first guide rod, and the two clamping plates also have first guide holes that are slidably engaged with the first guide rod.

5. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 4, characterized in that: The anode lifting mechanism includes a second screw that drives the first mounting plate to move up and down, a second motor that drives the second screw to rotate, and a first mounting bracket that carries the second motor. The second screw is rotatably mounted on the first mounting bracket, and the first mounting plate has a second threaded hole that is threadedly engaged with the second screw. The first mounting bracket is also provided with a second guide rod, and the first mounting plate also has a second guide hole that is slidably engaged with the second guide rod. The first mounting bracket is located at the upper end of the oxidation tank.

6. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 1, characterized in that: The cathode assembly also includes an insertion drive mechanism that drives the cathode insertion assembly to extend into the housing, and a cathode lifting mechanism that drives the insertion drive mechanism to move up and down.

7. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 6, characterized in that: The extension drive mechanism includes a second mounting plate connected to the cathode body, a third screw that drives the second mounting plate to move, a third motor that drives the third screw to rotate, and a third mounting plate that carries the third motor. The third screw is rotatably mounted on the third mounting plate, and a third thread that is threadedly engaged with the third screw is formed on the second mounting plate. The third mounting plate is also provided with a third guide rod, and the second mounting plate is also provided with a third guide hole that is slidably engaged with the third guide rod.

8. The omnidirectional anodizing apparatus for the inner cavity of the shell according to claim 7, characterized in that: The cathode lifting mechanism includes a fourth screw that drives the third mounting plate to move up and down, a fourth motor that drives the fourth screw to rotate, and a second mounting bracket that carries the fourth motor. The fourth screw is rotatably mounted on the second mounting bracket. The third mounting plate has a fourth threaded hole that is threadedly engaged with the fourth screw. The second mounting bracket is also provided with a fourth guide rod. The third mounting plate also has a fourth guide hole that is slidably engaged with the fourth guide rod. The second mounting bracket is located at the upper end of the oxidation tank.

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