Friction stir welding tool for aluminum alloy profile

Abstract

The utility model discloses a friction stir welding tool for an aluminum alloy profile, and particularly relates to the technical field of tool clamps. When the friction stir welding tool is used, a first support and a second support are close to each other, a blocking part on the first support is in contact with one end of the aluminum alloy profile, and a baffle on the second support is in contact with the other end of the aluminum alloy profile; the two sides of the aluminum alloy sections are preliminarily fixed without alignment installation, then the sliding plate is limited to slide on the base plate, the two aluminum alloy sections are made to get close to each other, then the first support and the second support continue to move close, one ends of the aluminum alloy sections are pushed by the blocking parts, and after the other ends of the aluminum alloy sections make contact with the abutting-pushing slopes, the aluminum alloy sections are fixed. And downward pressure is applied to the baffle, then the baffle elastically enters the mounting groove, at the moment, the top face of the baffle makes contact with the bottom face of the aluminum alloy profile, tight attachment is achieved through downward pressing of the pressing plate and tight abutting of the baffle, and the welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a tooling fixture used for friction stir welding of aluminum alloy profiles. Background Art

[0002] Friction stir welding uses the heat generated by the friction between the stirring head and the material to be welded to thermoplasticize the material, thereby achieving solid-phase connection between the workpieces. During the friction stir welding process, the welding head rotates at high speed and moves relative to the workpiece along the joint of the workpiece. It has the advantages of good welding quality, fast welding speed, no need for filler metal, and no smoke and dust, saving a lot of costs. The workpiece needs to be rigidly fixed on the tooling during the welding process to ensure the stability and quality of the welding process.

[0003] The existing friction stir welding tooling requires the workpiece to be placed on a pad, the pad and the workpiece to be aligned, and then to be compressed using multiple sets of clamping components. Each alignment of the pad and the workpiece and the compression require manual control, which is cumbersome to use. Utility Model Content

[0004] The purpose of the utility model is to provide a tool for friction stir welding of aluminum alloy profiles to solve the problems mentioned in the above background technology.

[0005] The main problems solved by this utility model are:

[0006] Each time the pad is aligned with the workpiece and pressed, manual control is required, which is cumbersome to use.

[0007] The utility model can be realized by the following technical solutions:

[0008] A tool for friction stir welding of aluminum alloy profiles, comprising a base plate, the top surface of which is slidably mounted with two limiting slides close to each other, the two edges of the top surface of each limiting slide being slidably mounted with a bracket one and a bracket two, the top surface end of the bracket one being provided with a blocking portion, the top surface end of the bracket two being a flat portion and provided with a mounting groove, a baffle being elastically mounted inside the mounting groove, and one side surface of the baffle being provided with a push-resisting slope.

[0009] A further technical improvement of the present invention is that a fixing block is fixed on the outer side surface of the second bracket, the fixing block is located below the mounting groove, the lower surface of the baffle is fixedly connected to a mounting portion of an I-shaped structure, an elastic member is sleeved on the outside of the mounting portion, one end of the elastic member is fixed to the upper surface of the fixing block, and the mounting portion and the fixing block are slidingly arranged.

[0010] A further technical improvement of the present invention is that a synchronous cylinder is installed in the middle of the edge of the top surface of the base plate, and the pushing end of the synchronous cylinder is fixed to the outer side surface of the corresponding limiting slide.

[0011] A further technical improvement of the present invention is that a fixing frame is installed on both sides of the upper surface of the base plate located on the synchronous cylinder, the fixing frame is arranged as an L-shaped structure, and a pressure plate pushed by an electric push rod is installed on the lower surface of the fixing frame, and the bottom surface of the pressure plate contacts the surface of the aluminum alloy profile.

[0012] A further technical improvement of the present invention is that two movable grooves are provided on the top surface of the limiting slide, and a lead screw driven by a dual-axis motor is installed inside each of the movable grooves. The thread directions of the outer surfaces of the two lead screws are opposite and are respectively threadedly connected to bracket one and bracket two, and bracket one and bracket two are both in sliding contact with the corresponding movable grooves.

[0013] A further technical improvement of the present invention is that a guide groove is provided on the upper surface of the base plate, and a sliding block that slides in the guide groove is installed on the bottom surface of the limiting slide plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When in use, bracket one and bracket two are close to each other, the blocking part on bracket one contacts one end of the aluminum alloy profile, and the baffle on bracket two contacts the other end of the aluminum alloy profile. The two sides of the aluminum alloy profile are initially fixed without alignment installation. Then the sliding plate is restricted from sliding on the base plate, so that the two aluminum alloy profiles are close to each other. Then bracket one and bracket two continue to move closer, and the blocking part pushes one end of the aluminum alloy profile. After the other end of the aluminum alloy profile contacts the push slope, downward pressure is applied to the baffle, which makes the baffle elastically enter the installation groove. At this time, the top surface of the baffle contacts the bottom surface of the aluminum alloy profile. By pressing down the pressure plate and tightening the baffle, a close fit is achieved, thereby improving the welding quality.

[0016] 2. Bracket 1 and bracket 2 change the distance through the lead screw with opposite thread directions to adapt to the loading of aluminum alloy profiles of different sizes. Then, the corresponding limiting slides are pushed synchronously by the synchronous cylinder to slide on the base plate. The sliding of the two limiting slides is simultaneous, so that the two adjacent aluminum alloy profiles contact each other, which is convenient for friction welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of the limiting slide plate and the base plate of the utility model;

[0020] Figure 3For this utility model Figure 1 A partial enlarged view of point A in the middle.

[0021] In the figure: 1. Base plate; 2. Limiting slide; 3. Fixed frame; 4. Pressing plate; 5. Synchronous cylinder; 6. Guide groove; 7. Sliding block; 8. Bracket 1; 9. Moving groove; 10. Lead screw; 11. Bracket 2; 12. Fixed block; 13. Mounting groove; 14. Baffle; 15. Pushing ramp; 16. Mounting part; 17. Elastic member. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0023] See also Figure 1-Figure 3 As shown, the utility model provides a tool for friction stir welding of aluminum alloy profiles, including a base plate 1, the top surface of the base plate 1 is slidably installed with two limiting slides 2 close to each other, and the two edges of the top surface of each limiting slide 2 are respectively slidably installed with a bracket 8 and a bracket 2 11, and the top surface end of the bracket 8 is provided with a blocking portion, which is C-shaped and is used to block and limit one end of the aluminum alloy profile. The top surface end of the bracket 2 11 is a flat portion and is provided with a mounting groove 13. A baffle 14 is elastically installed inside the mounting groove 13, and a side surface of the baffle 14 is provided with a push slope 15. Initially, the baffle 14 is elastically installed in the mounting groove 13 and is exposed. First, the aluminum alloy profile is placed between the bracket 1 8 and the bracket 2 11, as shown Figure 2 As shown, the aluminum alloy profile is supported by bracket 1 8 and bracket 2 11, and then bracket 1 8 and bracket 2 11 approach each other, the blocking portion on bracket 1 8 contacts one end of the aluminum alloy profile, and the baffle 14 on bracket 2 11 contacts the other end of the aluminum alloy profile, preliminarily fixing the two sides of the aluminum alloy profile, and then restricting the sliding plate 2 from sliding on the base plate 1, so that the two aluminum alloy profiles approach each other, and then bracket 1 8 and bracket 2 11 continue to move, and the blocking portion pushes one end of the aluminum alloy profile, and after the other end of the aluminum alloy profile contacts the push slope 15, downward pressure is applied to the baffle 14, so that the baffle 14 elastically enters the mounting groove 13, and at this time the top surface of the baffle 14 contacts the bottom surface of the aluminum alloy profile, pressing the aluminum alloy profile tightly.

[0024] See Figure 3As shown, a fixing block 12 is fixed on the outer side surface of the bracket 2 11, and the fixing block 12 is located below the mounting groove 13. The lower surface of the baffle 14 is fixedly connected with a mounting portion 16 of an I-shaped structure. An elastic member 17 is sleeved on the outside of the mounting portion 16, and one end of the elastic member 17 is fixed to the upper surface of the fixing block 12. The mounting portion 16 and the fixing block 12 are slidingly arranged. When the baffle 14 is subjected to a downward thrust, it pushes the mounting portion 16 to slide in the fixed block 12 and squeezes the elastic member 17 at the same time. When one end of the aluminum alloy profile passes above the mounting groove 13, the elastic member 17 restores its elastic deformation, pushing the top surface of the baffle 14 to contact the bottom surface of the aluminum alloy profile, and tightening the bottom surface of the aluminum alloy profile.

[0025] See Figure 1 and Figure 2 As shown, a synchronous cylinder 5 is installed in the middle of the top edge of the base plate 1, and the pushing end of the synchronous cylinder 5 is fixed to the outer side surface of the corresponding limiting slide plate 2;

[0026] The upper surface of the substrate 1 is located on both sides of the synchronous cylinder 5 and is equipped with a fixing frame 3. The fixing frame 3 is set to an L-shaped structure, and the lower surface of the fixing frame 3 is equipped with a pressure plate 4 pushed by an electric push rod. The bottom surface of the pressure plate 4 contacts the surface of the aluminum alloy profile, and the corresponding limiting slide 2 is synchronously pushed by the synchronous cylinder 5 to slide on the substrate 1. The sliding of the two limiting slides 2 is simultaneous, so that the two adjacent aluminum alloy profiles contact each other, which is convenient for friction welding. When the blocking part on the bracket 8 pushes one end of the aluminum alloy profile, the pressure plate 4 moves downward under the push of the electric push rod, and there is a gap with the aluminum alloy profile. When the end faces of the two aluminum alloy profiles are fitted together, the pressure plate 4 is pressed down to contact the top surface of the aluminum alloy profile. By pressing down the pressure plate 4 and tightening the baffle 14, a close fit is achieved, thereby improving the welding quality.

[0027] See Figure 2 As shown, the top surface of the limiting slide 2 is provided with two moving grooves 9, and a lead screw 10 driven by a dual-axis motor is installed inside each moving groove 9. The threads on the outer surfaces of the two lead screws 10 are in opposite directions and are respectively threadedly sleeved with the bracket 1 8 and the bracket 2 11. The bracket 1 8 and the bracket 2 11 are both in sliding contact with the corresponding moving grooves 9. The two lead screws 10 with opposite thread directions are driven by the dual-axis motor to rotate simultaneously. At this time, the bracket 1 8 and the bracket 2 11 slide in the moving groove 9 and approach each other, thereby achieving preliminary fixation of the aluminum alloy profile and alignment and fitting of the ends;

[0028] A guide groove 6 is provided on the upper surface of the base plate 1 , and a sliding block 7 is installed on the bottom surface of the limiting slide plate 2 to slide in the guide groove 6 , thereby ensuring stable sliding of the limiting slide plate 2 .

[0029] When the present invention is in use, the bracket 1 8 and the bracket 2 11 are close to each other, the blocking portion on the bracket 1 8 contacts one end of the aluminum alloy profile, and the baffle 14 on the bracket 2 11 contacts the other end of the aluminum alloy profile, and the two sides of the aluminum alloy profile are initially fixed without alignment installation. After that, the slide plate 2 is restricted from sliding on the base plate 1, so that the two aluminum alloy profiles are close to each other, and then the bracket 1 8 and the bracket 2 11 continue to move close to each other, and the blocking portion pushes one end of the aluminum alloy profile. After the other end of the aluminum alloy profile contacts the push slope 15, downward pressure is applied to the baffle 14, so that the baffle 14 elastically enters the installation groove 13. At this time, the top surface of the baffle 14 contacts the bottom surface of the aluminum alloy profile, and a close fit is achieved by the downward pressure of the pressure plate 4 and the tightening of the baffle 14, thereby improving the welding quality.

[0030] Bracket 1 8 and bracket 2 11 change the distance through the screw 10 with opposite thread directions to adapt to the loading of aluminum alloy profiles of different sizes. Then, the corresponding limiting slides 2 are pushed synchronously by the synchronous cylinder 5 to slide on the base plate 1. The sliding of the two limiting slides 2 is simultaneous, so that the two adjacent aluminum alloy profiles contact each other, which is convenient for friction welding.

[0031] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tool for friction stir welding of aluminum alloy profiles, comprising a base plate (1), characterized in that: Two limiting slides (2) close to each other are slidably mounted on the top surface of the substrate (1), and a bracket (8) and a bracket (11) are slidably mounted on the two edges of the top surface of each limiting slide (2), respectively. The top surface end of the bracket (8) is provided with a blocking portion, and the top surface end of the bracket (11) is a flat portion and is provided with a mounting groove (13). A baffle (14) is elastically mounted inside the mounting groove (13), and a side surface of the baffle (14) is provided with a push slope (15).

2. The tool for friction stir welding of aluminum alloy profiles according to claim 1, characterized in that: A fixing block (12) is fixed on the outer side surface of the bracket 2 (11), and the fixing block (12) is located below the mounting groove (13). The lower surface of the baffle (14) is fixedly connected to a mounting portion (16) of an I-shaped structure, and an elastic member (17) is sleeved on the outside of the mounting portion (16). One end of the elastic member (17) is fixed to the upper surface of the fixing block (12), and the mounting portion (16) and the fixing block (12) are slidably arranged.

3. The tool for friction stir welding of aluminum alloy profiles according to claim 1, characterized in that: A synchronous cylinder (5) is installed in the middle of the top edge of the base plate (1), and the pushing end of the synchronous cylinder (5) is fixed to the outer side surface of the corresponding limiting slide plate (2).

4. The tool for friction stir welding of aluminum alloy profiles according to claim 3, characterized in that: The upper surface of the base plate (1) is located on both sides of the synchronous cylinder (5), and a fixing frame (3) is installed. The fixing frame (3) is set to an L-shaped structure, and the lower surface of the fixing frame (3) is installed with a pressing plate (4) pushed by an electric push rod, and the bottom surface of the pressing plate (4) contacts the surface of the aluminum alloy profile.

5. The tool for friction stir welding of aluminum alloy profiles according to claim 1, characterized in that: The top surface of the limiting slide plate (2) is provided with two movable grooves (9), and a lead screw (10) driven by a dual-axis motor is installed inside each movable groove (9). The thread directions of the outer surfaces of the two lead screws (10) are opposite and are respectively threadedly connected to the bracket one (8) and the bracket two (11). The bracket one (8) and the bracket two (11) are both in sliding contact with the corresponding movable grooves (9).

6. The tool for friction stir welding of aluminum alloy profiles according to claim 1, characterized in that: A guide groove (6) is provided on the upper surface of the base plate (1), and a sliding block (7) that slides in the guide groove (6) is installed on the bottom surface of the limiting slide plate (2).

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