Rotary hanger for anodizing workpieces

Abstract

The utility model relates to a kind of rotary hangers for workpiece anodizing in surface treatment technical field, comprising: frame;Rotary seat, rotationally connected in the frame bottom, and by insulating material is made;The rotary seat circumferentially uniform interval ring is equipped with multiple extension beams, and extension beam extends along the radial direction of rotary seat and extends outward;Suspender, be equipped in each extension beam bottom, wherein the length of suspender of adjacent extension beam is different, and the length of suspender of same extension beam is identical;Clamping structure, installation is in suspender lower end, for fixing workpiece;Driving motor, be equipped in the frame top, the driving motor output shaft is connected rotary seat to drive extension beam rotation;The utility model drives workpiece symmetric or asymmetric agitating electrolyte by extension beam rotation, breaks fluid boundary layer;And electrolyte around workpiece is forced to update, so that concentration distribution is uniform, oxide film thickness deviation is ≤3%.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment technology, and in particular to a rotary lifting tool for anodizing workpieces. Background Technology

[0002] In the anodizing process of aluminum alloys and other workpieces, a hanger is often used to suspend the workpiece and immerse it in the electrolyte. In the prior art, the hangers used to suspend the workpiece in the electrolyte are generally statically suspended. For example, Chinese Patent Publication No. CN205893436U discloses an anodizing hanger. Using this hanger to suspend the workpiece during the oxidation process requires manual stirring or the use of other stirring equipment to ensure oxidation quality. Otherwise, the electrolyte concentration will significantly decrease in the area near the workpiece. Furthermore, since anodizing is an exothermic reaction, heat is generated when current passes through the electrolyte. This heat accumulates locally near the workpiece, causing the oxide film to dissolve rapidly, forming holes or blackening.

[0003] To address this, we designed a rotary lifting tool for workpiece anodizing. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a rotary lifting tool for workpiece anodizing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotating lifting fixture for anodizing workpieces, comprising:

[0007] frame;

[0008] A rotating base is rotatably connected to the bottom of the frame and is made of insulating material; the rotating base is circumferentially provided with multiple extending beams at uniform intervals, and the extending beams extend outward along the radial direction of the rotating base;

[0009] Hangers are installed at the bottom of each extension beam, wherein the hanger lengths of adjacent extension beams are different, and the hanger lengths of the same extension beam are the same;

[0010] A clamping structure, installed at the lower end of the lifting rod, is used to fix the workpiece;

[0011] A drive motor is located at the top of the frame, and the output shaft of the drive motor is connected to a rotating seat to drive the extension beam to rotate.

[0012] Furthermore, the extension direction of the extension beam forms an angle with the radial line of the rotating seat to achieve an eccentric arrangement.

[0013] Furthermore, the eccentricity angle of the extended beam ranges from 5° to 30°.

[0014] Furthermore, the clamping structure includes an n-shaped plate and a rotating handle. The rotating handle is screwed through one side wall of the n-shaped plate, and its head end cooperates with the other side plate of the n-shaped plate to clamp the workpiece.

[0015] Furthermore, each extension beam has at least two lifting rods at its bottom, all of which are at the same height and equipped with clamping structures, which can be used to jointly clamp large workpieces.

[0016] Furthermore, the clamping structure is rotatably mounted on the lower end of the boom.

[0017] Furthermore, both sides of the output shaft of the drive motor are connected to a rotating shaft via gear sets, and a winding drum is provided at the outer end of the rotating shaft; the winding drum is wound with a hoisting rope to facilitate the lifting and lowering of the frame by winding and unwinding the hoisting rope.

[0018] Furthermore, the outer ends of each rotating shaft are connected to two spaced-apart winding drums, forming a four-point lifting structure.

[0019] Furthermore, a contact ring is connected to the inner end of the extension beam.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Effectively eliminate electrolyte concentration gradient: The workpiece is symmetrically or asymmetrically agitated by the rotation of the extension beam, breaking the fluid boundary layer; the forward and reverse rotation + lifting composite motion (drive motor + winding drum) forcibly renews the electrolyte around the workpiece, making the concentration distribution uniform and the oxide film thickness deviation ≤3%;

[0022] 2. Suppress local high temperature: By accelerating heat diffusion through rotation and reciprocating motion, the temperature rise of the workpiece surface is reduced by 40%-60%, avoiding film ablation defects;

[0023] 3. Improved clamping compatibility: The single-extension beam multi-rod structure supports multi-point collaborative clamping of large workpieces (such as aluminum alloy plates). Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural schematic diagram of the present invention from another perspective;

[0026] Figure 3 for Figure 2 Enlarged view of part I in the image;

[0027] Figure 4 This is a schematic diagram of another structure of the present invention;

[0028] Figure 5 This is a front view of another structure of this utility model;

[0029] Figure 6 This is a right view of another structure of this utility model.

[0030] In the diagram: 1. Frame; 2. Rotating seat; 21. Extension beam; 22. Lifting rod; 3. Clamping structure; 31. N-shaped plate; 32. Rotating handle; 4. Drive motor; 5. Gear set; 6. Rotating shaft; 7. Rewind drum; 8. Lifting rope; 9. Electrical contact ring. Detailed Implementation

[0031] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0032] Example 1, in conjunction with Appendix Figure 1-3 A rotating lifting fixture for anodizing workpieces, comprising:

[0033] Frame 1; for example, frame 1 is made of 304 stainless steel welded into a rectangular frame structure with dimensions of 2000mm×1500mm×300mm.

[0034] The rotating seat 2 is rotatably connected to the bottom of the frame 1 and is made of insulating material; for example, the rotating seat 2 is rotatably connected to the center of the bottom surface of the frame 1 via a deep groove ball bearing; the rotating seat 2 is made of polytetrafluoroethylene with a thickness of 50 mm to achieve insulation. Multiple extending beams 21 are evenly spaced around the rotating seat 2, and the extending beams 21 extend radially outwards along the rotating seat 2; for example, there are a total of 8 extending beams 21, which are fixedly connected along the circumference of the rotating seat 2 by bolts; furthermore, a contact ring 9 is connected to the inner end of each extending beam 21.

[0035] Depending on the requirements, the central axis of the extension beam 21 may not be parallel to the radial line of the rotating seat 2, and the extension direction of the extension beam 21 may form an angle with the radial line of the rotating seat 2 to achieve an eccentric arrangement. Further, the eccentric angle of the extension beam 21 may range from 5° to 30°, for example, the extension direction of the extension beam 21 may form a 15° angle with the radial line of the rotating seat 2.

[0036] Hangers 22 are provided at the bottom of each extension beam 21. The lengths of hangers 22 on adjacent extension beams 21 are different, while the lengths of hangers 22 on the same extension beam 21 are the same. For example, the length of hangers 22 on extension beams 1, 3, 5, and 7 is 500 mm, and the length of hangers 22 on extension beams 2, 4, 6, and 8 is 800 mm.

[0037] Clamping structure 3 is installed at the lower end of the lifting rod 22 and is used to fix the workpiece;

[0038] Furthermore, the clamping structure 3 includes an n-shaped plate 31 and a rotating handle 32. The rotating handle 32 is screwed through one side wall of the n-shaped plate 31, and its head end cooperates with the other side plate of the n-shaped plate 31 to clamp the workpiece.

[0039] As needed, each extension beam 21 is provided with at least two lifting rods 22 at its bottom. Each lifting rod 22 is of the same height and is equipped with a clamping structure 3, which can be used to clamp large workpieces together. Preferably, an n-shaped plate 31 is rotatably mounted on the lower end of the lifting rod 22; for example, the top of the n-shaped plate 31 is connected to the lifting rod 22 through a universal joint, allowing for free deflection of ±30°.

[0040] The drive motor 4 is located at the top of the frame 1. The output shaft of the drive motor 4 is connected to the rotating seat 2 to drive the extension beam 21 to rotate.

[0041] Example 2, in conjunction with Appendix Figure 4-6 A rotating hoist for anodizing workpieces differs from Embodiment 1 in that it adds the function of moving the workpiece up and down. The output shaft of the drive motor 4 is symmetrically connected to the rotating shaft on both sides through the gear set 5. The rotating shaft is provided with a winding drum 7 at the outer end. The winding drum 7 is wound with a hoisting rope 8 so as to realize the lifting and lowering of the frame 1 by winding and unwinding the hoisting rope 8.

[0042] Preferably, the outer ends of each rotating shaft are connected to two spaced-apart winding drums 7 to form a four-point lifting structure.

[0043] Specifically, the rotating shaft is rotatably connected to the frame 1 via a bearing seat.

[0044] Working principle: By using a synergistic mechanism of dynamically perturbing the electrolyte and adaptive clamping, the problem of concentration gradient and temperature runaway during the anodizing process is solved. The specific principle is as follows:

[0045] Rotational disturbance mechanism: The drive motor 4 drives the insulated rotating seat 2 to run in both forward and reverse directions alternately; the extension beam 21 causes the workpiece to make non-circular motion, thereby breaking the electrolyte diffusion boundary layer, forcing ions to migrate to the workpiece surface, and maintaining the concentration balance in the reaction zone.

[0046] Lifting and convection mechanism: Gear set 5 drives symmetrically arranged winding drum 7 to synchronously wind and unwind the lifting rope 8, driving frame 1 to move up and down reciprocally; the workpiece is periodically lifted and lowered in the electrolyte, forming forced convection in the vertical direction, eliminating heat accumulation, and keeping the temperature fluctuation ≤5℃.

[0047] Clamping adaptive mechanism: Differentiated length of lifting rod 22: Short lifting rod 22 can clamp the protruding part of the workpiece, and long lifting rod 22 can hook the concave part to adapt to the irregular contour and avoid local stress concentration; The rotation design of clamping structure 3 enables n-shaped plate 31 to adapt to the tilt angle of the workpiece surface to ensure uniform conductive contact.

[0048] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A rotary lifting fixture for anodizing workpieces, characterized in that, include: Framework (1); Rotary seat (2) is rotatably connected to the bottom of the frame (1) and is made of insulating material; the rotating seat (2) is circumferentially spaced with multiple extension beams (21) and the extension beams (21) extend outward radially along the rotating seat (2); Hangers (22) are provided at the bottom of each extension beam (21), wherein the lengths of hangers (22) of adjacent extension beams (21) are different, and the lengths of hangers (22) of the same extension beam (21) are the same; The clamping structure (3) is installed at the lower end of the lifting rod (22) and is used to fix the workpiece; A drive motor (4) is located on the top of the frame (1), and the output shaft of the drive motor (4) is connected to a rotating seat (2) to drive the extension beam (21) to rotate.

2. The rotary lifting fixture for workpiece anodizing according to claim 1, characterized in that: The extension beam (21) extends at an angle to the radial line of the rotating seat (2) to achieve an eccentric arrangement.

3. The rotary lifting fixture for workpiece anodizing according to claim 2, characterized in that: The eccentric angle of the extension beam (21) ranges from 5° to 30°.

4. The rotary lifting fixture for anodizing workpieces according to claim 1, characterized in that: The clamping structure (3) includes an n-shaped plate (31) and a rotating handle (32). The rotating handle (32) is screwed through one side wall of the n-shaped plate (31), and its head end cooperates with the other side plate of the n-shaped plate (31) to clamp the workpiece.

5. A rotary lifting fixture for workpiece anodizing according to claim 1 or 4, characterized in that: Each extension beam (21) has at least two lifting rods (22) at its bottom. Each lifting rod (22) has the same height and is equipped with a clamping structure (3), which can be used to clamp large workpieces together.

6. A rotary lifting fixture for workpiece anodizing according to claim 5, characterized in that: The clamping structure (3) is rotatably mounted on the lower end of the boom (22).

7. The rotary lifting fixture for workpiece anodizing according to claim 1, characterized in that: The output shaft of the drive motor (4) is symmetrically connected to the rotating shaft (6) on both sides by a gear set (5). The outer end of the rotating shaft (6) is provided with a winding drum (7). The winding drum (7) is wound with a hoisting rope (8) so as to realize the lifting and lowering of the frame (1) by winding and unwinding the hoisting rope (8).

8. A rotary lifting fixture for workpiece anodizing according to claim 7, characterized in that: Each rotating shaft (6) has two spaced winding drums (7) connected to its outer end to form a four-point lifting structure.

9. A rotary lifting fixture for workpiece anodizing according to claim 1, characterized in that: The inner end of the extension beam (21) is connected to a power ring (9).

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