Workpiece cleaning device for friction stir welding

Abstract

The utility model discloses a workpiece cleaning device for friction stir welding, particularly relates to the technical field of friction welding, and comprises a base, and two positioning seats are symmetrically mounted on the top surface of the base. Welding is conducted through the sliding stirring needle, the protective frame is driven to move together, the protective frame covers and protects a welding area and is in a sealed state, it is guaranteed that the clean environment is not interfered by the outside world, then the cleaning roller conducts rotating friction on a welding seam, metal filings generated in the welding process and impurities such as oxide on the surface are removed, and the welding quality is improved. After rotary cleaning, the brush sweeps and scrapes cleaned metal chips to the edge of the base, cleaning is facilitated, the sleeve and the mounting base are driven by the transmission plate to rotate synchronously, the cleaning roller and the brush rotate to the other side of the stirring needle at the moment, the cleaning roller and the brush clean the weld joint on the other side of the workpiece at the moment, and the cleaning efficiency is improved. And cleaning is more thorough through two times of cleaning in different directions.

Description

Technical Field

[0001] The utility model relates to the technical field of friction welding, in particular to a workpiece cleaning device for friction stir welding. Background Technique

[0002] Friction stir welding utilizes the heat generated by the friction between a high-speed rotating welding tool and a workpiece to locally melt the welded material. By moving the welding tool along the weld gap to be welded, the plasticized material flows from the front of the welding tool to the rear under the action of the rotational friction force of the welding tool and forms a dense solid-phase weld under the extrusion of the welding tool.

[0003] After welding, the cleaning of the workpiece usually requires grinding and cleaning the weld of the workpiece to remove impurities such as metal chips and surface oxides generated during the welding process. However, the grinding and cleaning environment is exposed to the external environment, which is likely to cause the splashing of metal chips and requires secondary cleaning, increasing the workload. Content of the Utility Model

[0004] The purpose of the utility model is to provide a workpiece cleaning device for friction stir welding to solve the problems mentioned in the above background technique.

[0005] The main problem solved by the utility model is:

[0006] The grinding and cleaning environment is exposed to the external environment, which is likely to cause the splashing of metal chips and requires secondary cleaning, increasing the workload.

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

[0008] A workpiece cleaning device for friction stir welding includes a base. Two positioning seats are symmetrically installed on the top surface of the base. A bearing seat is arranged between the two positioning seats. A protection mechanism is slidably arranged above the bearing seat. The protection mechanism includes a protection frame that moves up and down in the vertical direction. The inner cavity top surface of the protection frame is installed with an adjustment cylinder. A transmission plate is rotatably installed on the outer surface of the adjustment cylinder. And a stirring needle is installed at the bottom of the adjustment cylinder in a lifting manner. The end of the transmission plate is installed with a sleeve. An installation seat that rotates inside the protection frame is slidably arranged inside the sleeve. An installation plate and a cleaning roller are sequentially arranged on the bottom surface of the installation seat. A brush is installed on the lower surface of the installation plate. The diameter of the cleaning roller is adapted to the welding position.

[0009] A further technical improvement of the utility model lies in that: a fixed seat is arranged on one side of the bottom of the adjustment cylinder. A driving gear driven by a driving motor is installed on the upper surface of the fixed seat. One end of the driving gear meshes with a gear ring that rotatably sleeved outside the adjustment cylinder. The gear ring is fixed to the transmission plate through a connecting rod.

[0010] A further technical improvement of the present utility model lies in that: a limiting ring groove is provided on the bottom surface of the inner cavity of the protective frame, a sliding seat is installed inside the limiting ring groove, an electric push rod II is installed on the bottom surface of the sliding seat, and the telescopic end of the electric push rod II passes through the inside of the sleeve and is fixed to the top surface of the mounting seat.

[0011] A further technical improvement of the present utility model lies in that: an annular upper groove and an annular lower groove are successively provided from top to bottom on the bottom surface of the inner cavity of the protective frame, and a through groove for the end of the mounting seat to enter is provided between the annular upper groove and the annular lower groove.

[0012] A further technical improvement of the present utility model lies in that: a fixing frame with an L-shaped structure is provided in the middle of the top surface of the base, a linear guide rail is installed on the bottom surface of the fixing frame, a slider is slidably arranged outside the linear guide rail, an electric push rod I is installed on the bottom surface of the slider, and the pushing end of the electric push rod I is fixed to the top surface of the protective frame.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] The present utility model performs welding through a sliding stirring needle, drives the protective frame to move together, covers and protects the welding area through the protective frame, and is in a sealed state to ensure that the clean environment is not interfered by the outside. Then, the welding seam is rotated and rubbed by a cleaning roller to remove impurities such as metal chips and surface oxides generated during the welding process, so as to ensure the quality and strength of the welding seam. After the rotational cleaning, the metal chips after cleaning are swept to the edge of the base by a brush for easy cleaning. The sleeve and the mounting seat are driven by a transmission plate to rotate synchronously by a certain degree. At this time, the cleaning roller and the brush rotate to the other side of the stirring needle. At this time, the cleaning roller and the brush clean the welding seam on the other side of the workpiece. The cleaning in two different directions is more thorough. Description of the Drawings

[0015] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic plan structure diagram of the present utility model;

[0017] Figure 2 It is a schematic top view mounting structure diagram of the positioning seat of the present utility model;

[0018] Figure 3 For the present utility model Figure 1 The partial enlarged view at A in;

[0019] Figure 4 It is a schematic three-dimensional structure diagram of the protective frame of the present utility model.

[0020] In the figure: 1, base; 2, fixing frame; 3, linear guide rail; 4, first electric push rod; 5, protective frame; 6, limit ring groove; 7, positioning seat; 8, bearing seat; 9, adjusting cylinder; 10, fixed seat; 11, driving gear; 12, gear ring; 13, transmission plate; 14, second electric push rod; 15, sleeve; 16, mounting seat; 17, upper annular groove; 18, lower annular groove; 19, mounting plate; 20, brush; 21, cleaning roller. Specific implementation manner

[0021] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manner, structure, features and their effects of the present invention as follows.

[0022] Please refer to Figures 1-4 As shown in the figure, the present invention provides a workpiece cleaning device for friction stir welding, including a base 1. Two positioning seats 7 are symmetrically installed on the top surface of the base 1. A bearing seat 8 is arranged between the two positioning seats 7. A protective mechanism is slidably arranged above the bearing seat 8. The protective mechanism includes a protective frame 5 that moves up and down in the vertical direction. The inner cavity top surface of the protective frame 5 is installed with an adjusting cylinder 9. The outer surface of the adjusting cylinder 9 is rotatably installed with a transmission plate 13. And a stirring pin is installed at the bottom of the adjusting cylinder 9 for lifting. The end of the transmission plate 13 is installed with a sleeve 15. An installation seat 16 that rotates inside the protective frame 5 is slidably arranged inside the sleeve 15. The bottom surface of the installation seat 16 is successively provided with a mounting plate 19 and a cleaning roller 21. The lower surface of the mounting plate 19 is installed with a brush 20. The diameter of the cleaning roller 21 is adapted to the welding position. During use, two workpieces are respectively loaded into the positioning seats 7, so that the ends of the two workpieces are attached to the top surface of the bearing seat 8. During friction stir welding, as Figure 2 shown, collection boxes are placed on both end faces of the bearing seat 8. The bottom surface of the protective frame 5 is in contact with the top surface of the workpiece. Welding is carried out through the sliding stirring pin, and the protective frame 5 is driven to move together. The welding area is covered and protected by the protective frame 5. Then, the cleaning roller 21 rotates and rubs the weld to remove metal chips and surface oxides and other impurities generated during the welding process, thereby ensuring the quality and strength of the weld. After rotational cleaning, the brush 20 sweeps the cleaned metal chips to the edge of the base 1, that is, into the collection box on one side, for easy cleaning. The transmission plate 13 drives the sleeve 15 and the mounting seat 16 to rotate synchronously by 180 degrees. At this time, the cleaning roller 21 and the brush 20 rotate to the other side of the stirring pin. At this time, the cleaning roller 21 and the brush 20 clean from the weld on the other side of the workpiece and enter the collection box on the other side.

[0023] Refer to Figure 3As shown in the figure, a fixed seat 10 is provided on one side of the bottom of the adjusting cylinder 9. A driving gear 11 driven by a driving motor is installed on the upper surface of the fixed seat 10. One end of the driving gear 11 meshes with a gear ring 12 rotatably sleeved outside the adjusting cylinder 9. The gear ring 12 is fixed to the transmission plate 13 through a connecting rod. By driving the gear ring 12 to rotate around the center of the adjusting cylinder 9 with the driving gear 11, since the adjusting cylinder 9 is fixed to the transmission plate 13 through a connecting rod, the transmission plate 13 and the adjusting cylinder 9 rotate synchronously during rotation, and the transmission plate 13 drives the sleeve 15 and the mounting seat 16 to rotate together.

[0024] Refer to Figure 1 and Figure 3 As shown in the figure, a limiting ring groove 6 is provided on the bottom surface of the inner cavity of the protective frame 5. A sliding seat is installed inside the limiting ring groove 6. An electric push rod two 14 is installed on the bottom surface of the sliding seat. The telescopic end of the electric push rod two 14 passes through the inside of the sleeve 15 and is fixed to the top surface of the mounting seat 16. By pushing the mounting seat 16 up and down with the electric push rod two 14, the cleaning roller 21 and the brush 20 are made to fit the weld position, facilitating the cleaning of the weld on the workpiece. When the transmission plate 13 rotates, it drives the sliding seat on the electric push rod two 14 to slide in the limiting ring groove 6.

[0025] Refer to Figure 4 As shown in the figure, further, an annular upper groove 17 and an annular lower groove 18 are sequentially provided on the bottom surface of the inner cavity of the protective frame 5 from top to bottom. A through groove for the end of the mounting seat 16 to enter is provided between the annular upper groove 17 and the annular lower groove 18. Through the connection of the through groove, the mounting seat 16 is selected to rotate in the annular upper groove 17 or the annular lower groove 18.

[0026] Refer to Figure 1 As shown in the figure, a fixed frame 2 with an L-shaped structure is provided in the middle of the top surface of the base 1. A linear guide rail 3 is installed on the bottom surface of the fixed frame 2. A slider is slidably arranged outside the linear guide rail 3. An electric push rod one 4 is installed on the bottom surface of the slider. The pushing end of the electric push rod one 4 is fixed to the top surface of the protective frame 5. By pushing the protective frame 5 downward with the electric push rod one 4 to make it fit and contact the top surface of the workpiece, the protective frame 5 is driven to slide along the fitting end of the workpiece by the linear guide rail 3, and the friction stir welding and cleaning of the workpiece are always in a sealed state, ensuring that the clean environment is not interfered by the outside.

[0027] When the utility model is in use, welding is carried out by a sliding stirring needle, and the protective frame 5 is driven to move together. The welding area is covered and protected by the protective frame 5, and is in a sealed state to ensure that the clean environment is not interfered by the outside. Then, the cleaning roller 21 rotates and rubs the weld seam to remove impurities such as metal chips and surface oxides generated during the welding process, so as to ensure the quality and strength of the weld seam. After the rotational cleaning, the metal chips after cleaning are swept to the edge of the base 1 by the brush 20 for easy cleaning. The transmission plate 13 drives the sleeve 15 and the mounting seat 16 to rotate synchronously by 180 degrees. At this time, the cleaning roller 21 and the brush 20 rotate to the other side of the stirring needle. At this time, the cleaning roller 21 and the brush 20 clean from the weld seam on the other side of the workpiece. The cleaning in two different directions is more thorough.

[0028] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A workpiece cleaning device for friction stir welding, comprising a base (1), characterized in that: On the top surface of the base (1), two positioning seats (7) are symmetrically installed. A bearing seat (8) is arranged between the two positioning seats (7). Above the bearing seat (8), a protection mechanism is slidably arranged. The protection mechanism includes a protection frame (5) that moves up and down in the vertical direction. On the inner cavity top surface of the protection frame (5), an adjustment cylinder (9) is installed. On the outer surface of the adjustment cylinder (9), a transmission plate (13) is rotatably installed. And at the bottom of the adjustment cylinder (9), a stirring needle is installed in a lifting manner. At the end of the transmission plate (13), a sleeve (15) is installed. Inside the sleeve (15), a mounting seat (16) that rotates inside the protection frame (5) is slidably arranged. On the bottom surface of the mounting seat (16), a mounting plate (19) and a cleaning roller (21) are successively arranged. On the lower surface of the mounting plate (19), a brush (20) is installed. The diameter of the cleaning roller (21) is adapted to the welding position.

2. The workpiece cleaning device for friction stir welding according to claim 1, wherein, On one side of the bottom of the adjustment cylinder (9), a fixed seat (10) is arranged. On the upper surface of the fixed seat (10), a driving gear (11) driven by a driving motor is installed. At one end of the driving gear (11), a gear ring (12) that is rotatably sleeved outside the adjustment cylinder (9) is engaged. The gear ring (12) is fixed to the transmission plate (13) through a connecting rod.

3. The workpiece cleaning device for friction stir welding according to claim 1, characterized in that, On the inner cavity bottom surface of the protection frame (5), a limiting ring groove (6) is arranged. Inside the limiting ring groove (6), a sliding seat is installed. On the bottom surface of the sliding seat, an electric push rod two (14) is installed. The telescopic end of the electric push rod two (14) passes through the inside of the sleeve (15) and is fixed to the top surface of the mounting seat (16).

4. The workpiece cleaning device for friction stir welding according to claim 1, wherein, On the inner cavity bottom surface of the protection frame (5), an annular upper groove (17) and an annular lower groove (18) are successively arranged from top to bottom. Between the annular upper groove (17) and the annular lower groove (18), a through groove for the end of the mounting seat (16) to enter is arranged.

5. The workpiece cleaning device for friction stir welding according to claim 1, characterized in that, In the middle of the top surface of the base (1), an L-shaped fixing frame (2) is arranged. On the bottom surface of the fixing frame (2), a linear guide rail (3) is installed. Outside the linear guide rail (3), a slider is slidably arranged. On the bottom surface of the slider, an electric push rod one (4) is installed. The pushing end of the electric push rod one (4) is fixed to the top surface of the protection frame (5).

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