Friction stir welding positioning and clamping device

Abstract

The invention relates to the technical field of clamping devices, in particular to a friction stir welding positioning and clamping device which comprises a bearing frame, a guide rod, a roller and a pressing plate, a vacant cavity is formed in the bearing frame, a hook groove is formed in the tail end of the guide rod, the guide rod is connected with the bearing frame in a sliding mode, and the guide rod can slide towards the interior of the cavity or slide towards the exterior of the cavity. A cavity is formed in the upper surface of the bearing frame, a groove communicated with the cavity is formed in the upper surface of the bearing frame, the rolling wheels are connected into the cavity of the bearing frame in a sliding mode, the rolling wheels can slide upwards to enable a part of the rolling wheels to penetrate through the groove or slide downwards to be completely arranged in the cavity, and the pressing plates are arranged in an array mode in the length direction of a workpiece and can press the workpiece downwards or lift and loosen the workpiece upwards. The friction stir welding positioning and clamping device is accurate in positioning and high in automation degree.

Description

Technical Field

[0001] The invention relates to the technical field of clamping devices, in particular to a friction stir welding positioning clamping device. Background Art

[0002] Friction stir welding refers to the use of heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the welded material. When the welding tool moves forward along the welding interface, the plasticized material flows from the front of the welding tool to the back under the action of the rotating friction of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool. Figure 1 The parts shown are fixed together by friction stir welding. The Chinese utility model patent with publication number CN219093955U discloses a T-shaped ribbed plate gantry friction stir welding device, which fixes two T-shaped plates together by a pressure plate and a push plate. Then the two T-shaped plates are welded and fixed using a welding gun. The disadvantage of this device is that the two workpieces cannot be positioned quickly. When the workpiece positioning is offset, the welding position will also be offset accordingly, affecting the welding effect. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a friction stir welding positioning clamping device, which is convenient for quickly positioning the workpiece to be welded.

[0004] To achieve the above-mentioned purpose, the present invention discloses a friction stir welding positioning clamping device, comprising:

[0005] A support frame, wherein an empty chamber is arranged in the support frame;

[0006] A guide rod, wherein a hook groove is arranged at the end of the guide rod, the guide rod is slidably connected to the support bracket, and the guide rod can slide into the chamber or out of the chamber;

[0007] A roller, wherein the upper surface of the support frame is provided with a groove communicating with the chamber, and the roller is slidably connected to the chamber of the support frame, and the roller can slide upward so that a part of it passes through the groove, or slide downward so that it is completely placed in the chamber;

[0008] The pressing plates are arranged in an array along the length direction of the workpiece, and the pressing plates can press the workpiece downwards, or lift up to loosen the workpiece.

[0009] Preferably, a supporting plate is connected in the chamber, the rollers are placed on the supporting plate, and the rollers correspond to the grooves one by one; a first telescopic rod is connected under the supporting frame, and the telescopic end of the first telescopic rod is connected to the supporting plate.

[0010] Preferably, sleeves are connected on both sides of the support bracket, the guide rod is slidably connected in the sleeve, a flange is provided at one end of the guide rod, the guide rod is connected to a spring, one end of the spring is press-connected to the inner wall of the support bracket, and the other end of the spring is press-connected to the flange, and under the action of the spring, the guide rod has a tendency to slide into the chamber.

[0011] Preferably, a guide plate is connected below the supporting plate, the guide plate gradually narrows from top to bottom, and one end of the guide rod is press-connected with the inclined surface of the guide plate.

[0012] Preferably, support frames are arranged on both sides of the supporting frame, one end of the pressure plate is hinged to the support frame, and a second telescopic rod is connected between the pressure plate and the support frame, one end of the second telescopic rod is hinged to the support frame, and the other end of the second telescopic rod is hinged to the pressure plate.

[0013] Preferably, the roller comprises a bracket and two wheel bodies, and the wheel bodies are rotatably connected to the bracket.

[0014] The present invention has the following technical effects:

[0015] The upward movement of the support plate can tighten the guide rod toward the center, thereby dragging the two parts to the middle and finally achieving positioning; while the guide rod is tightened toward the center, the roller will protrude from the upper surface of the support bracket to facilitate the movement of the parts, with accurate positioning and a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a welding workpiece of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the support bracket, the guide rod and the sleeve in the present invention;

[0018] Figure 3 It is a schematic diagram of the structure inside the support bracket of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the guide rod in the present invention;

[0020] Figure 5 It is a structural schematic diagram of the present invention.

[0021] In the figure, 1, support bracket; 2, chamber; 3, guide rod; 4, hook groove; 5, roller; 6, groove; 7, pressure plate; 8, workpiece; 9, support plate; 10, first telescopic rod; 11, sleeve; 12, flange; 13, spring; 14, guide plate; 15, support frame; 16, second telescopic rod; 17, bracket; 18, wheel body. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1To Attachment Figure 5 The principles and features of the present invention are described in detail with reference to the accompanying drawings and embodiments; the examples are only used to explain the present invention; they are not used to limit the scope of the present invention.

[0023] A friction stir welding positioning clamping device comprises a support bracket 1, a guide rod 3, a roller 5, a pressure plate 7 and a sleeve 11.

[0024] The support frame 1 is in the shape of a rectangular parallelepiped, and an empty chamber 2 is arranged inside the support frame 1. The function of the support frame 1 is to support the workpiece 8 to be welded. The sleeve 11 is fixedly connected to the two side walls of the support frame 1 by welding or bolts, and the sleeve 11 is evenly arranged in an array along the length direction of the support frame 1 (i.e., the length direction of the workpiece 8). The inner cavity of the sleeve 11 is connected to the chamber 2. The guide rod 3 corresponds to the sleeve 11 one by one, and the guide rod 3 is coaxially arranged in the sleeve 11 and the guide rod 3 and the sleeve 11 can slide axially. Based on this, the guide rod 3 forms a relative sliding connection with the support frame 1, and the guide rod 3 can slide into the chamber 2 or slide out of the chamber 2. A support plate 9 is connected to the chamber 2, and the roller 5 is placed on the support plate 9. Grooves 6 connecting the chamber 2 are evenly arranged in an array on the upper surface of the support frame 1, and the grooves 6 correspond to the rollers 5 one by one. The roller 5 is provided in the form of a wheel set, specifically, the roller 5 comprises a bracket 17 and two wheel bodies 18, the wheel bodies 18 are rotatably connected to the bracket 17, and the tangent direction of the rotation of the wheel bodies 18 is the length direction of the workpiece 8. A first telescopic rod 10 is connected below the support bracket 1, and the first telescopic rod 10 can be one of a hydraulic cylinder or a pneumatic cylinder, and the first telescopic rod 10 is used to support the support bracket 1 to slide up and down. The roller 5 is provided below the groove 6, and the support bracket 1 can slide upward to make the roller 5 protrude from the upper surface of the support bracket 1, or slide downward to make it completely placed in the chamber 2.

[0025] A flange 12 is provided at one end of the guide rod 3, and a hook groove 4 is provided at the other end of the guide rod 3. The hook groove 4 is provided outside the chamber 2 for moving the workpiece 8; the flange 12 is provided inside the chamber 2 for supporting the spring 13. The spring 13 is coaxially sleeved and connected with the guide rod 3, one end of the spring 13 is pressed against the inner wall of the chamber 2, and the other end of the spring 13 is pressed against the flange 12. Under the action of the spring 13, the guide rod 3 has a tendency to slide into the chamber 2. In order to prevent the guide rod 3 from sliding infinitely into the chamber 2, a guide plate 14 is connected below the support plate 9, and the guide plate 14 gradually narrows from top to bottom, and one end of the guide rod 3 is pressed against the inclined surface of the guide plate 14. Based on the design of the guide plate 14 and the guide rod 3, when the support bracket 1 rises upward, the guide rod 3 slides into the chamber 2 under the action of the spring 13.

[0026] Support frames 15 are arranged on both sides of the support frame 1, one end of the pressing plate 7 is hinged to the support frame 15, and a second telescopic rod 16 is connected between the pressing plate 7 and the support frame 15. The second telescopic rod 16 is a kind of cylinder or hydraulic cylinder, one end of the second telescopic rod 16 is hinged to the pressing plate 7, and the other end of the second telescopic rod 16 is hinged to the support frame 15. When the second telescopic rod 16 becomes longer, the pressing plate 7 moves downward to press the workpiece 8, and when the second telescopic rod 16 becomes shorter, it is lifted upward to release the workpiece 8.

[0027] Refer to the attached Figure 1 The function of this device is to connect two Figure 1 The profiles shown are joined together by friction stir welding. The workpiece 8 is placed on the support frame 1, and then the support plate 9 rises upward, and the guide rod 3 is tightened toward the center to join the two parts together. While the guide rod 3 is tightened toward the center, the roller 5 protrudes from the upper surface of the support frame 1, which facilitates the movement of the two parts toward the center position, and finally the two workpieces are welded together using a welding gun.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction stir welding positioning clamping device, characterized in that: include: A support frame (1), wherein an empty chamber (2) is arranged in the support frame (1); A guide rod (3), wherein a hook groove (4) is provided at the end of the guide rod (3), the guide rod (3) is slidably connected to the support bracket (1), and the guide rod (3) can slide into the chamber (2) or slide out of the chamber (2); A roller (5), wherein the upper surface of the support frame (1) is provided with a groove (6) communicating with the chamber (2), and the roller (5) is slidably connected to the chamber (2) of the support frame (1), and the roller (5) can slide upward so that a part of it passes through the groove (6), or slide downward so that it is completely placed in the chamber (2); A pressing plate (7) is arranged in an array along the length direction of the workpiece (8), and the pressing plate (7) can press the workpiece (8) downward, or lift up to release the workpiece (8).

2. The friction stir welding positioning clamping device according to claim 1, characterized in that: The chamber (2) is connected to a support plate (9), the roller (5) is placed on the support plate (9), and the roller (5) corresponds to the groove (6) one by one; the support frame (1) is connected to a first telescopic rod (10), and the telescopic end of the first telescopic rod (10) is connected to the support plate (9).

3. The friction stir welding positioning clamping device according to claim 2, characterized in that: Sleeves (11) are connected to both sides of the support frame (1), the guide rod (3) is slidably connected in the sleeve (11), a flange (12) is provided at one end of the guide rod (3), the guide rod (3) is connected to a spring (13), one end of the spring (13) is pressed against the inner wall of the support frame (1), and the other end of the spring (13) is pressed against the flange (12). Under the action of the spring (13), the guide rod (3) has a tendency to slide into the chamber (2).

4. The friction stir welding positioning clamping device according to claim 3, characterized in that: A guide plate (14) is connected below the support plate (9), and the guide plate (14) gradually narrows from top to bottom. One end of the guide rod (3) is pressed against the inclined surface of the guide plate (14).

5. The friction stir welding positioning clamping device according to claim 4, characterized in that: Support frames (15) are arranged on both sides of the support frame (1), one end of the pressure plate (7) is hinged to the support frame (15), and a second telescopic rod (16) is connected between the pressure plate (7) and the support frame (15), one end of the second telescopic rod (16) is hinged to the support frame (15), and the other end of the second telescopic rod (16) is hinged to the pressure plate (7).

6. The friction stir welding positioning clamping device according to claim 1, characterized in that: The roller (5) comprises a bracket (17) and two wheel bodies (18), wherein the wheel bodies (18) are rotatably connected to the bracket (17).

Images