A cleaning structure of a copper-aluminum friction stir welding tool

Abstract

The utility model discloses a kind of cleaning structure of copper aluminium friction stir welding head, including workbench, the side of workbench is a plurality of friction stir welding units, the other side is cleaning platform, stirring head switches between both, the cleaning platform includes support seat, transversely provided with induction welding ring on the support seat, steel wire brush array is arranged below the induction welding ring;By the above mode, the utility model uses the combined mode of induction heating, mechanical cleaning and visual inspection, not only can effectively control the temperature of stirring head, greatly reduce cleaning time, without material loss, and easy to realize automated production, effectively improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal welding technology, and in particular to a cleaning structure for a copper-aluminum friction stir welding head. Background Technology

[0002] Copper-aluminum friction stir welding is an advanced solid-state joining technology, mainly used to join copper and aluminum, two metals with significantly different physical and chemical properties. It utilizes the principle of frictional heat and plastic deformation between a high-speed rotating stirring head and the workpiece to join the two dissimilar metals. This solid-state joining technology overcomes the problem of brittle intermetallic compounds that are easily generated by traditional fusion welding methods, and has the advantages of high efficiency, energy saving, and high quality.

[0003] like Figure 1 The image shows the state of a common stirring head after friction stir welding. Residual material is usually attached to the threaded groove at the top of the stirring head. In copper-aluminum friction stir welding technology, cleaning the stirring head is an important step in the friction stir welding process. It is mainly used to remove residual material, impurities and oxide layer from the surface of the stirring head to ensure the processing performance of the stirring head and the welding quality.

[0004] To address the above issues, existing technologies offer several solutions, such as: 1. Scrubbing with a wire brush or nylon brush. This method is simple and easy to operate, but it can only clean the surface oxide layer and is difficult to remove residues inside the threaded grooves; 2. High-speed abrasive jetting of fine particles onto the surface of the mixing head using sandblasting equipment. Sandblasting can effectively remove stubborn stains, but the pressure and time of sandblasting must be strictly controlled to avoid damaging the mixing head; 3. Placing the mixing head in an ultrasonic cleaning tank, utilizing the high-frequency vibration of ultrasound to generate cavitation, removing surface residues and impurities. This method has good cleaning results, but requires the use of a suitable cleaning solution and control of cleaning temperature and time, making it difficult to meet mass production requirements; 4. Soaking the mixing head in acidic or alkaline solutions to remove the surface oxide layer and residues. Acid washing is effective, but the concentration of acid and soaking time must be strictly controlled to avoid excessive corrosion of the mixing head; 5. Cleaning the mixing head with brass plates. The cleaning effect is also significant, but it requires increasing the welding cycle, increasing the cost of brass plates and exacerbating wear and tear on the mixing head. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a cleaning structure for copper-aluminum friction stir welding heads. It adopts a combination of induction heating, mechanical cleaning and visual inspection, which can not only effectively control the temperature of the stirring head and greatly reduce the cleaning time, but also eliminate material loss and facilitate automated production, thus effectively improving production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides a cleaning structure for a copper-aluminum friction stir welding head, including a worktable. One side of the worktable is a plurality of friction stir welding units, and the other side is a cleaning table. The stirring head can be switched between the two. The cleaning table includes a support base, on which an induction welding ring is arranged laterally, and below the induction welding ring is a wire brush array.

[0007] Preferably, the support base includes a pad, a fixing block is disposed above the pad, and the induction welding ring is disposed laterally on the fixing block.

[0008] Preferably, the induction welding ring is a circular coil with a single-layer multi-turn structure.

[0009] Preferably, the diameter of the copper tube used for the circular coil is between 5-6 mm.

[0010] Preferably, the induction welding ring is selected as an induction welding ring with temperature detection function.

[0011] Preferably, the length of the wire brush array is greater than the length of the support base.

[0012] Preferably, an adjustment plate is provided below the wire brush array, and waist-shaped grooves are provided on both sides of the adjustment plate.

[0013] Preferably, a visual inspection system is provided on the side of the wire brush array away from the support.

[0014] The beneficial effects of this utility model are:

[0015] This invention addresses the shortcomings of existing processing methods by proposing a novel cleaning structure for copper-aluminum friction stir welding heads. It employs a combination of induction heating, mechanical cleaning, and visual inspection to effectively avoid the use of additional materials (such as acids, alkalis, and abrasives). Cleaning can be completed quickly on the worktable, eliminating the need for offline cleaning of the friction stir welding head and frequent head replacements. This facilitates automated production, effectively shortens the cleaning time of the stirring head on the production line, significantly improves production efficiency, and reduces production costs, demonstrating significant practical and promotional value. Attached Figure Description

[0016] Figure 1 This is the state of a common stirring head after friction welding in the background technology of this utility model;

[0017] Figure 2 This is an overall schematic diagram of the cleaning structure of a copper-aluminum friction stir welding head according to this utility model.

[0018] Figure 3 This is a partial schematic diagram of the cleaning structure of a copper-aluminum friction stir welding head according to the present invention, used to illustrate the structural design of the cleaning station;

[0019] The components in the attached diagram are labeled as follows:

[0020] 1. Workbench; 2. Friction stir welding unit; 3. Cleaning station; 4. Stirring head; 5. Induction welding ring;

[0021] 6. Wire brush array; 7. Pad; 8. Fixing block; 9. Adjusting plate; 10. Vision inspection system. Detailed Implementation

[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0023] Example:

[0024] like Figure 2 and Figure 3 As shown, a cleaning structure for a copper-aluminum friction stir welding head includes a worktable 1. A friction stir welding unit is arranged on one side of the worktable 1. Welding of metal materials is achieved through frictional heat and plastic deformation between the high-speed rotating stirring head 4 and the workpiece. After welding, the stirring head 4 is switched to a cleaning table to clean the residual material, impurities, and oxide layer on the surface of the stirring head 4, ensuring the performance of the stirring head 4 and the welding quality. Figure 1 As can be seen, the top of the stirring head 4 is grooved, and welding residue usually accumulates in the groove, making it difficult to clean.

[0025] like Figure 2 and Figure 3 As shown, a support base is provided on the cleaning table 3. The support base includes a pad 7, and a fixing block 8 is provided above the pad 7. The induction welding ring 5 is horizontally arranged on the fixing block 8. The welded stirring head 4 will stay in the middle of the induction welding ring 5. This utility model innovatively uses the induction welding ring 8 to heat the stirring head 4, so that the residual material on the surface of the stirring head 4 can be raised to 600-800°C in a short time. These residual materials and impurities will soften rapidly at high temperature, making it easier to clean later. Furthermore, the power supply used for the induction welding ring 8 in this utility model is a 5kW high-frequency induction heating power supply with a frequency of 10-50KHz. It can automatically track the frequency change according to the load to ensure the stability of the power output during the heating process.

[0026] like Figure 2 and Figure 3As shown, the induction welding ring 5 is selected as an induction welding ring with temperature detection function. The induction welding ring with temperature detection function heats the stirring head 4, which can effectively control the damage of high temperature to the stirring head 4 material and is easy to realize automated production. The induction welding ring 5 will stop heating when the temperature reaches the set value or when the stirring head 4 stays for a certain period of time, and will start to rotate and move downward. In the structural design of this utility model, the induction welding ring 5 adopts a single-layer multi-turn circular coil, and the copper tube used for the circular coil has a diameter of 5-6mm. This size of copper tube can meet the requirements of mechanical strength and cooling while ensuring electrical efficiency. Moreover, under the conditions of heat insulation and insulation, the gap between the induction coil and the stirring head 4 should be as small as possible, and the turns should be as close to each other as possible to improve the electrical efficiency of the inductor.

[0027] like Figure 2 and Figure 3 As shown, the residual material heated by the induction welding ring 5 by the stirring head 4 softens and, during its downward rotation, inserts into the wire brush array 6 for mechanical brushing cleaning. The stirring head 4 inserts 5-8mm below the surface of the wire brush array, pauses for 3 seconds, and then begins to move upward, stopping its rotation after being 5mm away from the wire brush surface. The stirring head 4 completes one cleaning cycle and can then switch to the friction stir welding unit for the next welding operation. Furthermore, the length of the wire brush array 6 is greater than the length of the support base, facilitating the lifespan of the brushes. To ensure full utilization of the brushes, an adjustment plate 9 is provided below the wire brush array 6. The position of the brushes is adjusted by the waist-shaped grooves on both sides of the adjustment plate 9, facilitating the cleaning of the stirring head 4. Furthermore, a vision inspection system 10 is provided on the side of the wire brush array 6 away from the support base. The vision inspection system 10 assists in checking the cleaning effect of the stirring head 4. If the residual material is not completely removed, a second cleaning can be performed, repeating the above process.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cleaning structure for a copper-aluminum friction stir welding head, comprising a workbench (1), wherein one side of the workbench (1) is a plurality of friction stir welding units (2), and the other side is a cleaning table (3), and a stirring head (4) is switched between the two, characterized in that: The cleaning table (3) includes a support base, on which an induction welding ring (5) is arranged laterally, and below the induction welding ring (5) is a wire brush array (6).

2. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: The support base includes a pad (7), a fixing block (8) is provided above the pad (7), and the induction welding ring (5) is arranged laterally on the fixing block (8).

3. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: The induction welding ring (5) adopts a single-layer multi-turn circular coil.

4. The cleaning structure for a copper-aluminum friction stir welding head according to claim 3, characterized in that: The diameter of the copper tube used for the circular coil is between 5-6 mm.

5. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: The induction welding ring (5) is selected as an induction welding ring with temperature detection function.

6. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: The length of the wire brush array (6) is greater than the length of the support base.

7. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: An adjustment plate (9) is provided below the wire brush array (6), and waist-shaped grooves are provided on both sides of the adjustment plate (9).

8. The cleaning structure for a copper-aluminum friction stir welding head according to claim 1, characterized in that: A visual inspection system (10) is provided on the side of the wire brush array (6) away from the support.

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