Sulfuric acid anodic oxidation device for aluminum alloy casting

Abstract

The utility model provides a sulfuric acid anodic oxidation device for an aluminum alloy casting, and relates to the technical field of aluminum alloy casting processing. An oxidation tank is formed in the upper part of the treatment box; a sulfuric acid tank is formed in the center in the treatment box; a dilution tank is formed in the lower part of the treatment box; the left part of the dilution tank is fixedly connected with a water outlet pipe; the right part of the dilution tank is fixedly connected with a water injection pipe; the right part of the treatment box is fixedly connected with a mounting plate; the top end face of the mounting plate is fixedly connected with a water pump through bolts; a water inlet of the water pump is connected with the sulfuric acid tank; a water outlet of the water pump is connected with the oxidation tank; and two cathode plates are symmetrically and fixedly connected in the oxidation tank. By starting a control motor, the control motor drives an incomplete gear to rotate, then a clamping frame is driven to reciprocate in an oxidation tank through a series of transmission, and the problem that when an aluminum alloy casting is subjected to fixed oxidation, the flowing states of electrolyte around different structures are different, and the uniformity of an oxidation film is easily affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy casting processing technology, and in particular to a sulfuric acid anodizing device for aluminum alloy castings. Background Technology

[0002] In the process of processing aluminum alloy castings, in order to improve the corrosion resistance of aluminum alloy castings, it is usually necessary to perform sulfuric acid anodizing on the aluminum alloy castings. In order to facilitate the sulfuric acid anodizing of aluminum alloy castings, workers usually use sulfuric acid anodizing equipment. Existing sulfuric acid anodizing equipment usually consists of a treatment box, fixtures, oxidation tank, sulfuric acid tank, water tank and water pump.

[0003] For example, utility model application CN201922032017.6 discloses a sulfuric acid anodizing device, specifically including a tank. A first partition is installed inside the tank, with a first valve installed at one end of the first partition. A second partition is installed inside the tank, located below the first partition, with a second valve extending from the side wall of the tank at one end. The tank is divided from top to bottom into a working tank, a sulfuric acid tank, and a water tank by the first and second partitions. A conductive column is installed at the upper end of the working tank, and a cathode plate is installed inside the working tank. A water pump is installed on the side of the tank, with a lower pipe connected to the inside of the sulfuric acid tank at the pump's inlet and an upper pipe connected to the inside of the working tank at the pump's outlet. A drain valve is installed on the side wall of the water tank, and an inlet valve is installed on the other side wall. The beneficial effects are: the working tank, sulfuric acid tank, and water tank are interconnected, enabling the recycling of sulfuric acid and avoiding waste; the sulfuric acid electrolyte is diluted and discharged through the water tank, preventing environmental pollution.

[0004] However, in the current traditional sulfuric acid anodizing equipment, aluminum alloy castings are usually clamped by fixtures and fixed in the oxidation tank for oxidation. However, since the shapes of aluminum alloy castings are often complex and diverse, with structures such as protrusions, depressions, and deep holes, the flow state of the electrolyte around these different structures is different when the aluminum alloy castings are fixed for oxidation. This can easily affect the uniformity of the oxide film, reduce the processing effect of the aluminum alloy castings, and make the equipment inconvenient to use. Utility Model Content

[0005] In view of this, the present invention provides a sulfuric acid anodizing device for aluminum alloy castings, which has a clamping frame that can improve the uniformity of the oxide film. By starting the control motor, the control motor drives the incomplete gear to rotate. When the incomplete gear is not meshed with the control gear but meshes with the control rack, the rotation of the incomplete gear will drive the control rack to move, causing the control rack to drive the control gear to rotate. When the incomplete gear is meshed with the control gear but not with the control rack, the incomplete gear will drive the control gear to rotate, causing the control gear to drive the control rack to move in the opposite direction, causing the control rack to reciprocate. As the control rack reciprocates, the clamping frame reciprocates within the oxidation tank.

[0006] This utility model provides a sulfuric acid anodizing device for aluminum alloy castings, specifically including: a treatment tank; an oxidation tank is provided at the top of the treatment tank; a sulfuric acid tank is provided in the center of the treatment tank; a dilution tank is provided at the bottom of the treatment tank; a water outlet pipe is fixedly connected to the left side of the dilution tank; a water injection pipe is fixedly connected to the right side of the dilution tank; a mounting plate is fixedly connected to the right side of the treatment tank; a water pump is bolted to the top surface of the mounting plate; the inlet of the water pump is connected to the sulfuric acid tank; the outlet of the water pump is connected to the oxidation tank; two cathode plates are symmetrically fixedly connected inside the oxidation tank; a connecting frame is fixedly connected to the top of the treatment tank; a third electric push rod is bolted to the top surface of the connecting frame; a connecting plate is fixedly connected to the end of the output shaft of the third electric push rod.

[0007] Optionally, a clamping frame is slidably connected to the bottom end face of the connecting plate; two clamping plates are symmetrically arranged on the inner side of the clamping frame; two control screws are symmetrically threaded inside the clamping frame; the ends of the two control screws are rotatably connected to the outside of the two clamping plates respectively; a set of guide slide rods is fixedly connected to the outside of each of the two clamping plates; the two sets of guide slide rods are slidably connected inside the clamping frame; two reflux pipes are symmetrically fixedly connected inside the oxidation tank; the ends of the two reflux pipes are both located inside the sulfuric acid tank.

[0008] Optionally, a control rack is fixedly connected to the front of the clamping frame; a mounting box is fixedly connected to the center of the front of the connecting plate; a control motor is bolted to the top surface of the mounting box; an incomplete gear is coaxially fixedly connected to the bottom surface of the control motor shaft; a control gear is rotatably connected to the right side of the mounting box; the control gear meshes with the incomplete gear; both the control gear and the incomplete gear mesh with the control rack.

[0009] Optionally, a drive shaft is rotatably connected inside the sulfuric acid tank; two control water wheels are symmetrically and fixedly connected to the outside of the drive shaft; the two control water wheels are respectively aligned with the positions of two return pipes; two first pulleys are symmetrically and coaxially fixedly connected to the outside of the drive shaft; two fixed shafts are symmetrically and rotatably connected inside the sulfuric acid tank; a second pulley is fixedly connected to the outside of each of the two fixed shafts; the two second pulleys are respectively connected to the two first pulleys via drive belts.

[0010] Optionally, a control cam is coaxially fixedly connected to the outside of each of the two fixed rotating shafts; a filter plate is slidably connected inside the sulfuric acid tank; two sets of return springs are symmetrically fixedly connected to the bottom end of the filter plate; the ends of the two sets of return springs are fixedly connected inside the sulfuric acid tank; and the two control cams are aligned with the position of the filter plate.

[0011] Optionally, a first electric push rod is provided at the lower part of the oxidation tank; a first baffle plate is fixedly connected to the end of the output shaft of the first electric push rod; a second electric push rod is provided at the lower part of the sulfuric acid tank; a second baffle plate is fixedly connected to the end of the output shaft of the second electric push rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In use, the operator starts the control motor, which drives the incomplete gear to rotate. The incomplete gear, control rack, and control gear work together to cause the control rack to reciprocate. This reciprocating motion of the control rack causes the clamping frame to reciprocate within the oxidation tank, allowing the sulfuric acid electrolyte to be more evenly distributed on the casting surface. This ensures a uniform oxidation reaction across the entire surface, resulting in a more uniform oxide film thickness. This effectively improves the sulfuric acid anodizing effect on aluminum alloy castings and enhances the practicality of the sulfuric acid anodizing device.

[0014] During the reflux of sulfuric acid through the return pipe, the refluxed sulfuric acid drives the control water wheel to rotate. Subsequently, through a series of transmissions, it drives the fixed shaft to rotate. During the rotation of the fixed shaft, it drives the control cam to rotate. As the control cam rotates, it squeezes the filter plate, and the elastic potential energy of the return spring causes the filter plate to vibrate. This effectively prevents impurities from accumulating on the filter plate, ensures the filtration effect of the filter plate, and effectively improves the convenience of the sulfuric acid anodizing device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] In the attached diagram:

[0017] Figure 1This is a schematic diagram of the isometric structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is an isometric structural diagram of the filter plate of this utility model.

[0020] Figure 4 This is a cross-sectional view of the connecting plate of this utility model.

[0021] Figure 5 This is a cross-sectional structural diagram of the installation box of this utility model.

[0022] List of reference numerals

[0023] 1. Processing tank; 101. Oxidation tank; 102. Sulfuric acid tank; 103. Dilution tank; 104. Water outlet pipe; 105. Water injection pipe; 106. Mounting plate; 107. Water pump; 108. Cathode plate; 109. Return pipe; 110. First electric actuator; 111. First baffle plate; 112. Second electric actuator; 113. Second baffle plate; 114. Drive shaft; 115. Control impeller; 116. Filter plate; 117. 118. Return spring; 119. First pulley; 120. Fixed shaft; 121. Second pulley; 122. Control cam; 123. Connecting frame; 124. Third electric push rod; 125. Connecting plate; 126. Clamping frame; 127. Control screw; 128. Clamping plate; 129. Guide slide rod; 130. Control rack; 131. Mounting box; 132. Control motor; 133. Incomplete gear; 134. Control gear. Detailed Implementation

[0024] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0025] Example 1:

[0026] This utility model proposes a sulfuric acid anodizing device for aluminum alloy castings. Please refer to [reference needed]. Figures 1 to 5 Includes: processing box 1;

[0027] An oxidation tank 101 is provided at the top of the treatment tank 1; a sulfuric acid tank 102 is provided in the center of the treatment tank 1; a dilution tank 103 is provided at the bottom of the treatment tank 1; a water outlet pipe 104 is fixedly connected to the left side of the dilution tank 103; a water injection pipe 105 is fixedly connected to the right side of the dilution tank 103; a mounting plate 106 is fixedly connected to the right side of the treatment tank 1; a water pump 107 is bolted to the top surface of the mounting plate 106; the inlet of the water pump 107 is connected to the sulfuric acid tank 102; the outlet of the water pump 107 is connected to the oxidation tank 101; two cathode plates 108 are symmetrically fixedly connected inside the oxidation tank 101; a connecting frame 122 is fixedly connected to the top of the treatment tank 1; a third electric push rod 123 is bolted to the top surface of the connecting frame 122; a connecting plate 124 is fixedly connected to the end of the output shaft of the third electric push rod 123.

[0028] A clamping frame 125 is slidably connected to the bottom end face of the connecting plate 124; two clamping plates 127 are symmetrically arranged on the inner side of the clamping frame 125; two control screws 126 are symmetrically threaded inside the clamping frame 125; the ends of the two control screws 126 are rotatably connected to the outside of the two clamping plates 127 respectively; a set of guide slide rods 128 are fixedly connected to the outside of each of the two clamping plates 127; the two sets of guide slide rods 128 are slidably connected inside the clamping frame 125; two return pipes 109 are symmetrically fixedly connected inside the oxidation tank 101; the ends of the two return pipes 109 are both located inside the sulfuric acid tank 102.

[0029] A control rack 129 is fixedly connected to the front of the clamping frame 125; a mounting box 130 is fixedly connected to the center of the front of the connecting plate 124; a control motor 131 is bolted to the top surface of the mounting box 130; an incomplete gear 132 is coaxially fixedly connected to the bottom surface of the shaft of the control motor 131; a control gear 133 is rotatably connected to the right side of the mounting box 130; the control gear 133 meshes with the incomplete gear 132; both the control gear 133 and the incomplete gear 132 mesh with the control rack 129.

[0030] A drive shaft 114 is rotatably connected inside the sulfuric acid tank 102; two control water wheels 115 are symmetrically and fixedly connected to the outside of the drive shaft 114; the two control water wheels 115 are respectively aligned with the positions of the two return pipes 109; two first pulleys 118 are symmetrically and coaxially fixedly connected to the outside of the drive shaft 114; two fixed shafts 119 are symmetrically and rotatably connected inside the sulfuric acid tank 102; a second pulley 120 is fixedly connected to the outside of each of the two fixed shafts 119; the two second pulleys 120 are respectively connected to the two first pulleys 118 via drive belts.

[0031] Two fixed rotating shafts 119 are coaxially fixedly connected to a control cam 121 on their exteriors; a filter plate 116 is slidably connected inside the sulfuric acid tank 102; two sets of return springs 117 are symmetrically fixedly connected to the bottom end face of the filter plate 116; the ends of the two sets of return springs 117 are fixedly connected inside the sulfuric acid tank 102; the two control cams 121 are aligned with the position of the filter plate 116.

[0032] The specific usage and function of this embodiment are as follows: When performing sulfuric acid anodizing on aluminum alloy castings, the aluminum alloy castings are placed in the clamping frame 125. Then, the control screw 126 is rotated, causing the control screw 126 to move the clamping plate 127. The clamping plate 127 is guided by the guide slide rod 128. As the clamping plate 127 moves, it clamps and fixes the aluminum alloy casting. Then, the third electric push rod 123 is activated, causing the third electric push rod 123 to move the clamping frame 125, allowing the aluminum alloy casting to enter the oxidation tank 101. Then, the water pump 107 is activated to pump sulfuric acid from the oxidation tank 101. The sulfuric acid electrolyte in tank 102 is drawn into oxidation tank 101. The aluminum alloy casting undergoes sulfuric acid anodizing through the sulfuric acid and cathode plate 108. Simultaneously, when the sulfuric acid electrolyte level exceeds the return pipe 109, excess sulfuric acid electrolyte flows back into sulfuric acid tank 102 through the return pipe 109. During sulfuric acid anodizing, the control motor 131 is activated, causing the incomplete gear 132 to rotate. When the incomplete gear 132 is not meshed with the control gear 133 but is meshed with the control rack 129, the rotation of the incomplete gear 132 drives the control rack 129 forward. The movement causes the control rack 129 to drive the control gear 133 to rotate. When the incomplete gear 132 meshes with the control gear 133 but not with the control rack 129, the incomplete gear 132 will drive the control gear 133 to rotate, causing the control gear 133 to drive the control rack 129 to move in the opposite direction, causing the control rack 129 to reciprocate. As the control rack 129 reciprocates, it will drive the clamping frame 125 to reciprocate within the oxidation tank 101. During the process of sulfuric acid returning through the return pipe 109, the returned sulfuric acid will drive the control water wheel 115 to move. The rotation of the water wheel 115 drives the transmission shaft 114 to rotate, which in turn drives the first pulley 118 to rotate. The rotation of the first pulley 118 drives the second pulley 120 to rotate via the transmission belt. The rotation of the second pulley 120 drives the fixed shaft 119 to rotate, which in turn drives the control cam 121 to rotate. The rotation of the control cam 121 compresses the filter plate 116 and causes the filter plate 116 to vibrate through the elastic potential energy of the return spring 117.

[0033] Example 2:

[0034] Based on Example 1, please refer to Figures 1 to 2 The system includes: a first electric push rod 110, a first baffle plate 111, a second electric push rod 112, and a second baffle plate 113. The first electric push rod 110 is provided at the lower part of the oxidation tank 101; the first baffle plate 111 is fixedly connected to the end of the output shaft of the first electric push rod 110; the second electric push rod 112 is provided at the lower part of the sulfuric acid tank 102; the second baffle plate 113 is fixedly connected to the end of the output shaft of the second electric push rod 112.

[0035] The specific usage and function of this embodiment are as follows: After the aluminum alloy casting is processed, the first electric push rod 110 and the second electric push rod 112 are activated to allow the first baffle plate 111 and the second baffle plate 113 to be collected. At this time, the sulfuric acid electrolyte in the oxidation tank 101 and the sulfuric acid tank 102 will flow into the dilution tank 103. Water is then injected into the dilution tank 103 through the water injection pipe 105 to dilute the sulfuric acid electrolyte. The diluted sulfuric acid electrolyte can be discharged through the water outlet pipe 104.

Claims

1. A sulfuric acid anodizing apparatus for aluminum alloy castings, comprising: The utility model provides a processing box (1), the upper portion of processing box (1) is opened with oxidation groove (101), the inside of processing box (1) is opened with sulfuric acid groove (102) in the middle, the lower portion of processing box (1) is opened with dilution groove (103), characterized by, the left portion fixed connection of dilution groove (103) has outlet pipe (104), the right portion fixed connection of dilution groove (103) has water injection pipe (105), the right portion fixed connection of processing box (1) has an installation plate (106), the top end surface bolt fastening of installation plate (106) is connected with a water pump (107), the water inlet of water pump (107) is connected with sulfuric acid groove (102), the water outlet of water pump (107) is connected with oxidation groove (101), the inside symmetrical fixed connection of oxidation groove (101) has two cathode plates (108), the upper portion fixed connection of processing box (1) has connecting frame (122), the top end surface bolt fastening of connecting frame (122) is connected with a third electric push rod (123), the output shaft end fixed connection of third electric push rod (123) has connecting plate (124).

2. The apparatus for sulfuric acid anodizing of aluminum alloy castings according to claim 1, characterized in that: The bottom end surface sliding connection of connecting plate (124) has a clamping frame (125), the inside symmetrical of clamping frame (125) is provided with two clamping plates (127), the inside symmetrical screw connection of clamping frame (125) has two control screws (126), and the outside of two clamping plates (127) is rotatably connected with the end of two control screws (126) respectively, and the outside of two clamping plates (127) is fixedly connected with a group of guide sliding rods (128), and two groups of guide sliding rods (128) are slidingly connected in clamping frame (125), and the inside symmetrical fixed connection of oxidation groove (101) has two return pipes (109), and the end of two return pipes (109) is arranged in sulfuric acid groove (102).

3. The apparatus for sulfuric acid anodizing of aluminum alloy castings as set forth in claim 2, characterized by: The front portion fixed connection of clamping frame (125) has control rack (129), and the front portion fixed connection of connecting plate (124) has installation box (130) in the middle, and the top end surface bolt fastening of installation box (130) is connected with a control motor (131), and the bottom end surface coaxial fixed connection of control motor (131) rotating shaft has an incomplete gear (132), and the right portion rotation of installation box (130) is connected with a control gear (133), and control gear (133) is engaged with incomplete gear (132), and control gear (133) and incomplete gear (132) are engaged with control rack (129).

4. The apparatus for sulfuric acid anodizing of aluminum alloy castings as set forth in claim 1, characterized by: The sulfuric acid tank (102) is rotationally connected with a transmission rotating shaft (114); the outer part of the transmission rotating shaft (114) is fixedly connected with two control water wheels (115) in a symmetrical manner; the two control water wheels (115) are respectively aligned with the positions of two backflow pipes (109); the outer part of the transmission rotating shaft (114) is fixedly connected with two first belt pulleys (118) in a symmetrical and coaxial manner; the sulfuric acid tank (102) is rotationally connected with two fixed rotating shafts (119) in a symmetrical manner; the outer part of the two fixed rotating shafts (119) is fixedly connected with a second belt pulley (120); the two second belt pulleys (120) are respectively connected with the two first belt pulleys (118) through transmission belts.

5. The apparatus for sulfuric acid anodizing of aluminum alloy castings as set forth in claim 4, characterized by: The outer part of the two fixed rotating shafts (119) is fixedly connected with a control cam (121) in a coaxial manner; the sulfuric acid tank (102) is slidingly connected with a filter plate (116); the bottom end surface of the filter plate (116) is fixedly connected with two groups of return springs (117) in a symmetrical manner; the ends of the two groups of return springs (117) are fixedly connected in the sulfuric acid tank (102); the two control cams (121) are aligned with the positions of the filter plate (116).

6. The apparatus for sulfuric acid anodizing of aluminum alloy castings as set forth in claim 1, characterized by: The lower part of the oxidation tank (101) is provided with a first electric push rod (110); the end of the output shaft of the first electric push rod (110) is fixedly connected with a first flow resistance plate (111); the lower part of the sulfuric acid tank (102) is provided with a second electric push rod (112); the end of the output shaft of the second electric push rod (112) is fixedly connected with a second flow resistance plate (113).

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