Friction stir welding follow-up auxiliary device

Abstract

The utility model discloses a friction stir welding follow-up auxiliary device, which relates to the technical field of friction welding, and comprises two groups of fixing frames, at least one group of fixing frames is provided with a first sliding chute, and the two groups of fixing frames are internally provided with a second sliding chute; the two sets of limiting frames are in sliding connection with the set of fixing frames through the first sliding grooves correspondingly; the two sets of adjusting pieces are in threaded connection with the set of fixing frames correspondingly, and one ends of the two sets of adjusting pieces are rotationally connected with the set of limiting frames correspondingly; the connecting frame is in sliding connection with the two sets of second sliding grooves; the connecting piece is detachably connected with the connecting frame; the pressing assembly is installed on the lower side of the connecting frame. The two sets of fixing frames can be installed on the two sides of the welding table respectively and matched with the limiting frame and the rotating roller, movement of the welding head can be restrained and reinforced, and therefore the stability of the welding head in the working process can be improved.

Description

Technical Field

[0001] This utility model relates to the field of friction welding technology, specifically to a follow-up auxiliary device for friction stir welding. Background Technology

[0002] Friction welding is a solid-state joining process that utilizes the heat generated by friction between the material contact surfaces to bring the materials to a plastic state, and then applies pressure to complete the weld. It is characterized by high efficiency and no melting, making it suitable for welding components of different materials. The rotational friction heat from the shoulder and stirring pin, along with the heat from the plastic deformation of the metal, heats the surrounding material to a plastic state. During welding, the temperature is below the melting point, and the stirring head moves along the surfaces to be welded at a specific welding speed. The thermoplastic material continuously transfers from the front to the back of the stirring head, thus forming a dense weld seam.

[0003] A search revealed a Chinese patent (publication number: CN112317952A) that discloses a follow-up auxiliary device for friction stir welding. The patent includes a main shaft, a connecting mechanism, and a pressure plate mechanism. A ring block is provided at the bottom end of the main shaft, and a rotating shaft is provided at the bottom end of the ring block. A welding head is provided at the bottom end of the rotating shaft. A sliding groove and a first fixing hole are provided at one end of the top of the ring block. The first fixing hole is located on both sides of the sliding groove. The connecting mechanism is located at one end of the ring block and is sleeved with the sliding groove.

[0004] In the prior art, during welding, it is necessary to maintain the stability of the welding head and the workpiece to improve the welding quality. Furthermore, during welding, the welding part of the workpiece needs to be kept in a close fit. Therefore, this utility model proposes a follow-up auxiliary device for friction stir welding. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a follow-up auxiliary device for friction stir welding, which solves the problem.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a friction stir welding follow-up auxiliary device, comprising two sets of fixing frames, which are distributed on both sides of the workpiece welding area during use and are respectively connected to both sides of the welding table for fixing;

[0007] Both sets of fixing frames have a first sliding groove at at least one end, the first sliding groove being perpendicular to the welding direction of the workpiece, and both sets of fixing frames have a second sliding groove inside, the two sets of second sliding grooves being parallel to each other and also parallel to the welding direction of the workpiece.

[0008] Both sets of fixing frames are slidably connected to the limiting frame through the first sliding groove, and both sets of fixing frames are threadedly connected to the side of the adjusting component. One end of each adjusting component passes through the corresponding fixing frame and is rotatably connected to the corresponding limiting frame.

[0009] After the adjustment component is rotated, it drives the corresponding limit frame to adjust along the first slide groove of the corresponding fixed frame, thereby changing the distance between the two sets of limit frames.

[0010] A connecting frame is slidably connected between the two sets of second slide grooves. A detachable connector is installed on one side of the connecting frame. When in use, the connector fits against one side of the welding head.

[0011] A pressing component is installed on the lower side of the connecting frame. The bottom of the pressing component is attached to the upper side of the welding part of the workpiece. When the connecting component moves with the welding head, the pressing component is driven to move along the welding part of the workpiece through the connecting frame.

[0012] Preferably, multiple rotating rollers are rotatably connected to the opposite side of each of the two sets of limiting frames.

[0013] Preferably, the second slide is inverted T-shaped, and one end of the second slide extends to the outside of the fixed frame to facilitate the replacement of the connecting frame by the staff.

[0014] Preferably, the connecting frame includes a frame body, and sliding parts are installed on the lower sides of both ends of the frame body;

[0015] Both sets of sliding members are inverted T-shaped. In use, the two sets of sliding members are respectively embedded in a second sliding groove and remain stationary by static friction with the second sliding groove.

[0016] Preferably, the pressing component includes a fixed post, which is fixedly connected to the connecting frame, and a sliding post is slidably connected inside the fixed post;

[0017] The fixed column has mounting grooves on both sides, and the sliding column has mounting holes inside. In use, a set of locking bolts are passed through the mounting grooves of the fixed column and the mounting holes of the sliding column, and then nuts are used to fix the fixed column and the sliding column, so as to facilitate the adjustment of the overall length of the fixed column and the sliding column.

[0018] Preferably, the side of the fixed column is provided with a side groove, and a side rod that passes through the side groove is installed on one side of the sliding column;

[0019] The bottom of the sliding column is rotatably connected to a rotating rod, and an elastic element is installed between the side of the rotating rod and the side rod.

[0020] A pressing wheel is rotatably connected to the bottom end of the rotating rod.

[0021] Beneficial effects

[0022] This invention provides a follow-up auxiliary device for friction stir welding. Compared with existing technologies, it has the following advantages:

[0023] The two sets of fixing frames in this utility model can be installed on both sides of the welding table respectively, and together with the limiting frame and rotating roller, the movement of the welding head can be constrained and reinforced, thereby improving the stability of the welding head during operation.

[0024] Furthermore, the connector allows for the establishment of a connection between the welding head and the connecting frame. When the welding head moves, the connecting frame allows the pressing component to move along the welding area of ​​the workpiece, thereby pressing the welding area of ​​the workpiece and keeping it in a close fit. The connector can also be replaced according to the shape of the welding head, thus improving its applicability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a side sectional view of the fixing frame in this utility model;

[0027] Figure 3 This is a side sectional view of the connecting frame and pressing assembly in this utility model.

[0028] In the diagram: 1. Fixed frame; 2. First slide groove; 3. Second slide groove; 4. Limiting frame; 5. Adjusting component; 6. Connecting frame; 7. Connecting component; 8. Pressing assembly; 9. Rotating roller; 61. Sliding component; 81. Fixed column; 82. Side groove; 83. Sliding column; 84. Rotating rod; 85. Pressing wheel; 86. Side rod; 87. Elastic component. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-3 This utility model provides a technical solution: a follow-up auxiliary device for friction stir welding, including two sets of fixing frames 1. When in use, the two sets of fixing frames 1 are distributed on both sides of the welding part of the workpiece and are respectively connected to both sides of the welding table for fixing.

[0031] Both ends of the two sets of fixing frames 1 are provided with first sliding grooves 2, which are perpendicular to the welding direction of the workpiece. The interior of the two sets of fixing frames 1 is provided with second sliding grooves 3, which are parallel to each other and also parallel to the welding direction of the workpiece.

[0032] Both sets of fixing frames 1 are slidably connected to the limiting frame 4 through the first sliding groove 2, and both sets of fixing frames 1 are threadedly connected to the side of the adjusting parts 5. One end of each set of adjusting parts 5 passes through the corresponding fixing frame 1 and is rotatably connected to the corresponding limiting frame 4.

[0033] After rotating the adjusting component 5, the corresponding limiting frame 4 is driven to adjust along the first slide groove 2 of the corresponding fixed frame 1, thereby changing the distance between the two sets of limiting frames 4.

[0034] A connecting frame 6 is slidably connected between the two sets of second slide grooves 3. A detachable connecting piece 7 is installed on one side of the connecting frame 6 by bolts. When in use, the connecting piece 7 fits against one side of the welding head, and the contact part between the connecting piece 7 and the welding head is selected based on the style of the welding head, thereby improving the applicability of the device.

[0035] A pressing component 8 is installed on the lower side of the connecting frame 6. The bottom of the pressing component 8 is attached to the upper side of the welding part of the workpiece. When the connecting piece 7 moves with the welding head, the pressing component 8 is driven to move along the welding part of the workpiece through the connecting frame 6.

[0036] Please see Figure 2 Each of the two sets of limiting frames 4 has multiple rotating rollers 9 rotatably connected to one side of the opposite side, and the rotation direction of each rotating roller 9 matches the movement direction of the welding head.

[0037] The second slide 3 is inverted T-shaped, and one end of the second slide 3 extends to the outside of the fixed frame 1 to facilitate the replacement of the connecting frame 6 by the staff.

[0038] Please see Figure 3 The connecting frame 6 includes a frame body, and sliding parts 61 are installed on the lower sides of both ends of the frame body;

[0039] Both sets of sliding members 61 are inverted T-shaped. In use, the two sets of sliding members 61 are respectively embedded in a set of second sliding grooves 3 and remain stationary by static friction with the second sliding grooves 3.

[0040] Furthermore, in this embodiment, an anti-slip coating is provided at the contact area between the slider 61 and the second groove 3;

[0041] The pressing component 8 includes a fixed post 81, which is fixedly connected to the connecting frame 6, and a sliding post 83 is slidably connected inside the fixed post 81.

[0042] The fixed column 81 has mounting grooves on both sides, and the sliding column 83 has mounting holes inside. In use, a set of locking bolts are passed through the mounting grooves of the fixed column 81 and the mounting holes of the sliding column 83, and then nuts are used to fix the fixed column 81 and the sliding column 83, so as to facilitate the adjustment of the overall length of the fixed column 81 and the sliding column 83.

[0043] The side of the fixed column 81 is provided with a side groove 82, and the side of the sliding column 83 is provided with a side rod 86 that passes through the side groove 82.

[0044] A rotating rod 84 is rotatably connected to the bottom of the sliding column 83, and an elastic element 87 is installed between the side of the rotating rod 84 and the side rod 86.

[0045] A pressing wheel 85 is rotatably connected to the bottom end of the rotating rod 84.

[0046] During work:

[0047] Install the two sets of fixing frames 1 on both sides of the welding table. After assembly, wrap the welding head around the middle. Then rotate the adjusting parts 5 on the sides of the two sets of fixing frames 1 to adjust the position of the two sets of limiting frames 4 until the rotating rollers 9 in the two sets of limiting frames 4 are respectively attached to both sides of the welding head.

[0048] Then the connecting frame 6 slides along the second slide groove 3, and the device fits the connecting piece 7 against one side of the welding head;

[0049] During welding, the welding head moves along the welding part of the workpiece. The stability of the welding head is reinforced by two sets of limiting frames 4. At the same time, when the welding head moves, it drives the pressing component 8 to move along the welding part of the workpiece through the connecting piece 7 and the connecting frame 6.

[0050] When the pressing assembly 8 moves, the elastic element 87, through the rotating rod 84, pushes the pressing wheel 85 against the upper side of the welding part of the workpiece, and at the same time, in conjunction with the reaction force of the pressing wheel 85, increases the friction between the sliding element 61 and the second sliding groove 3.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A follow-up auxiliary device for friction stir welding, characterized in that, include: The two sets of fixed frames (1) each have a first sliding groove (2) at least one end, and the two sets of fixed frames (1) each have a second sliding groove (3) inside. Limiting frame (4), the two sets of limiting frames (4) are slidably connected to a set of fixed frames (1) through the first sliding groove (2); Adjustment component (5), the two sets of adjustment components (5) are respectively threaded to a set of fixing brackets (1), and one end of the two sets of adjustment components (5) is respectively rotatably connected to a set of limiting brackets (4); The connecting frame (6) is slidably connected to the two sets of second sliding grooves (3); The connector (7) is detachably connected to the connector (6) and fits against one side of the welding head during operation; The pressing component (8) is installed on the lower side of the connecting frame (6), with its bottom end attached to the upper side of the welding part of the workpiece.

2. The follow-up auxiliary device for friction stir welding according to claim 1, characterized in that: The first groove (2) is perpendicular to the welding direction of the workpiece; Both sets of second chutes (3) are parallel to the welding direction of the workpiece.

3. The follow-up auxiliary device for friction stir welding according to claim 1, characterized in that: Both sets of limit frames (4) have multiple rotating rollers (9) rotatably connected to opposite sides.

4. The follow-up auxiliary device for friction stir welding according to claim 1, characterized in that: The second slide (3) is inverted T-shaped, and one end of the second slide (3) extends to the outside of the fixing frame (1).

5. The follow-up auxiliary device for friction stir welding according to claim 4, characterized in that: The connecting frame (6) includes a frame body, and sliding parts (61) are installed on the lower sides of both ends of the frame body; Both sets of sliding members (61) are inverted T-shaped and are respectively connected to a set of second sliding grooves (3).

6. The follow-up auxiliary device for friction stir welding according to claim 1, characterized in that: The pressing component (8) includes a fixed post (81), and a sliding post (83) is slidably connected inside the fixed post (81); The fixed column (81) has mounting grooves on both sides, and the sliding column (83) has mounting holes inside.

7. The follow-up auxiliary device for friction stir welding according to claim 6, characterized in that: The fixed column (81) has a side groove (82) on its side, and the sliding column (83) has a side rod (86) that passes through the side groove (82) on one side. The bottom of the sliding column (83) is rotatably connected to a rotating rod (84), and an elastic element (87) is installed between the side of the rotating rod (84) and the side rod (86); The bottom end of the rotating rod (84) is rotatably connected to a pressing wheel (85).

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