Friction stir welding device

Abstract

The utility model discloses a friction stir welding device, and relates to the technical field of friction stir welding devices. The device comprises a water storage tank, a bearing plate and an electric guide rail body are fixedly installed on the top face of the water storage tank, a portal frame is slidably installed on the surface of the electric guide rail body, a first electric push rod is fixedly installed on the bottom face of the top of the portal frame, and an extrusion block is fixedly installed at the telescopic end of the first electric push rod; a friction welding head body is arranged on the surface of the lifting plate, a nozzle and a lifting cleaning mechanism are fixedly mounted on the surface of the lifting plate, and a water supply mechanism is fixedly connected between the top end of the nozzle and the water storage tank. Water is supplied to the spray head through the water supply mechanism, the spray head longitudinally moves under the action of the bearing plate and sprays water to a weld joint, water evaporates under the action of high temperature to achieve auxiliary cooling of the weld joint, material cooling is effectively accelerated, the effective working time of the friction stir welding device is prolonged, and welding efficiency is effectively improved.

Description

Technical Field

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

[0002] Friction stir welding refers to the use of the heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the material to be welded. When the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotating friction force of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool. Friction stir welding does not have high requirements for equipment. The most basic requirements are the rotation of the welding head and the relative movement of the workpiece. Even a milling machine can simply meet the requirements of small flat plate butt welding, but the rigidity of the welding equipment and fixture is extremely important.

[0003] The stir friction welding devices that are widely used at present lack a cooling structure, and the temperature at the joint of the two pieces of material welded together by friction is very high. For safety and welding stability considerations, it is generally necessary to leave it alone for a period of time, and the material can only be removed after the joint has cooled and stabilized. The cooling of the material takes up a lot of time, which greatly reduces the effective working time of the stir friction welding device, and the welding efficiency needs to be further improved.

[0004] For this purpose, a friction stir welding device is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems mentioned in the above background technology, and the utility model provides a stir friction welding device.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A friction stir welding device comprises a water tank, a supporting plate and an electric guide rail body are fixedly mounted on the top surface of the water tank, a gantry is slidably mounted on the surface of the electric guide rail body, a first electric push rod is fixedly mounted on the bottom surface of the top of the gantry, an extrusion block is fixedly mounted on the telescopic end of the first electric push rod, a lifting plate is slidably mounted on the front of the extrusion block, a lifting mechanism for driving the lifting plate to rise and fall is provided on the surface of the extrusion block, a friction welding head body is provided on the surface of the lifting plate, a nozzle and a lifting and cleaning mechanism are fixedly mounted on the surface of the lifting plate, a water supply mechanism for connecting the inside of the nozzle and the water tank is fixedly connected between the top of the nozzle and the water tank, and a material fixing mechanism is provided on the top surface of the supporting plate.

[0008] Furthermore, the extrusion block includes a mounting block, which is fixedly mounted on the bottom surface of the telescopic end of the first electric push rod. A groove is opened on the bottom surface of the mounting block. The number of the grooves is two and they are symmetrically arranged on the left and right sides. A rotating shaft is rotatably installed between the left and right sides of the inner wall of the groove. An extrusion roller is fixedly mounted on the surface of the rotating shaft, and the extrusion roller is arranged inside the groove.

[0009] Furthermore, the lifting mechanism includes a longitudinal slide groove, a first motor and a first threaded rod, the longitudinal slide groove is opened on the front surface of the mounting block, the first motor is fixedly installed on the top surface of the mounting block, the first threaded rod is rotatably connected to the top wall and bottom wall of the longitudinal slide groove, the output end of the first motor is fixedly connected to the first threaded rod, and the lifting plate is slidably installed on the inner wall surface of the longitudinal slide groove and is threadedly mounted on the surface of the first threaded rod.

[0010] Furthermore, the water supply mechanism includes a water supply pipe, which is fixedly connected to the top of the nozzle and fixedly inserted into the side wall of the water tank. A solenoid valve and a water pump are provided on the surface of the water supply pipe. The solenoid valve is fixedly installed on the side of the water tank, and the water pump is fixedly installed on the top surface of the lifting plate.

[0011] Furthermore, the lifting and cleaning mechanism includes a second electric push rod and a sponge block, the second electric push rod is fixedly installed on the surface of the lifting plate, the telescopic end of the second electric push rod is fixedly connected to the mounting plate, the bottom surface of the mounting plate and the top surface of the sponge block are fixedly installed with Velcro, the Velcro is arranged in pairs up and down, and the Velcro is used to fix the sponge block to the bottom surface of the mounting plate.

[0012] Furthermore, the material fixing mechanism includes a transverse slide groove and a second motor, the transverse slide groove is opened on the top surface of the supporting plate, the number of the transverse slide grooves is four and they are symmetrically arranged front to back and left to right, a slider is slidably installed on the inner wall surface of the transverse slide groove, the second motor is fixedly installed inside the supporting plate, a second threaded rod is fixedly connected to the output end of the second motor, the second threaded rod is rotatably installed on the inner wall surfaces of two symmetrical transverse slide grooves, the second threaded rod is a double-headed threaded rod, the surface of the second threaded rod is threadedly connected to the slider, and limiting plates are fixedly installed on the top surfaces of the two second threaded rods arranged front to back.

[0013] The beneficial effects of the utility model are as follows:

[0014] After welding is completed, water is supplied to the nozzle through the water supply mechanism. The nozzle moves longitudinally under the action of the support plate and sprays water onto the weld. The water evaporates under the action of high temperature to achieve auxiliary cooling of the weld, effectively accelerate the cooling of the material, increase the effective working time of the stir friction welding device, and effectively improve the welding efficiency. After the material is cooled, the lifting and cleaning mechanism moves down to contact the material surface. Under the action of the support plate, the lifting and cleaning mechanism wipes and removes the welding waste and water remaining on the surface of the material. No manual wiping is required, which is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a bottom view of the three-dimensional structure of the extrusion block of the utility model;

[0017] Figure 3 It is a schematic diagram of the partial structure explosion of the water absorption mechanism of the utility model;

[0018] Figure 4 It is a top cross-sectional view of the three-dimensional structure of the utility model;

[0019] 1. The electric guide rail body is provided with a plurality of push rods, each of which ... DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 4 As shown, a friction stir welding device comprises a water tank 1, a supporting plate 2 and an electric guide rail body 3 are fixedly installed on the top surface of the water tank 1, a gantry 4 is slidably installed on the surface of the electric guide rail body 3, a first electric push rod 5 is fixedly installed on the bottom surface of the top of the gantry 4, an extrusion block 6 is fixedly installed on the telescopic end of the first electric push rod 5, a lifting plate 7 is slidably installed on the front of the extrusion block 6, a lifting mechanism 8 for driving the lifting plate 7 to rise and fall is provided on the surface of the extrusion block 6, a friction welding head body 9 is provided on the surface of the lifting plate 7, a nozzle 10 and a lifting and cleaning mechanism 12 are fixedly installed on the surface of the lifting plate 7, a water supply mechanism 11 for connecting the inside of the two is fixedly connected between the top of the nozzle 10 and the water tank 1, and a material fixing mechanism 13 is provided on the top surface of the supporting plate 2.

[0026] More specifically, the two pieces of material to be welded are transversely limited and squeezed and fixed by the material fixing mechanism 13, and the extrusion block 6 is driven to descend by the telescopic end of the first electric push rod 5 so that the bottom of the extrusion block 6 contacts the top surface of the material, and the two pieces of material to be welded are vertically squeezed and fixed, and the lifting plate 7 is driven to descend by the lifting mechanism 8, which can drive the friction welding head body 9, the nozzle 10 and the lifting cleaning mechanism 12 to descend, and at the same time, the electric guide rail body 3 drives the gantry 4 to move longitudinally, so that the friction welding head body 9 gradually descends to the surface of the contact material and moves back and forth, so as to complete the stirring. After the friction stir welding is completed, water is supplied to the nozzle 10 through the water supply mechanism 11. The nozzle 10 moves longitudinally under the action of the support plate 2 and sprays water to the weld. The water evaporates under the action of high temperature to achieve auxiliary cooling of the weld, effectively accelerate the cooling of the material, increase the effective working time of the friction stir welding device, and effectively improve the welding efficiency. After the material is cooled, the lifting and cleaning mechanism 12 moves down to contact the material surface. Under the action of the support plate 2, the lifting and cleaning mechanism 12 wipes and removes the welding waste and water remaining on the surface of the material. There is no need for manual wiping, which is more efficient.

[0027] The extrusion block 6 includes a mounting block 601, which is fixedly mounted on the bottom surface of the telescopic end of the first electric push rod 5. A groove 602 is provided on the bottom surface of the mounting block 601. There are two grooves 602 and they are symmetrically arranged on the left and right sides. A rotating shaft 603 is rotatably installed between the left and right sides of the inner wall of the groove 602. An extrusion roller 604 is fixedly mounted on the surface of the rotating shaft 603, and the extrusion roller 604 is arranged inside the groove 602.

[0028] Specifically, when the telescopic end of the first electric push rod 5 drives the mounting block 601 to descend, the extrusion roller 604 squeezes and contacts the material surface. When the gantry 4 moves forward and backward under the action of the support plate 2, the mounting block 601 moves forward and backward with the gantry 4. The extrusion roller 604 rolls relative to the material surface while maintaining the extrusion and fixation of the material, preventing the material from flying due to the stress of the friction welding head body 9.

[0029] The lifting mechanism 8 includes a longitudinal slide groove 801, a first motor 802 and a first threaded rod 803. The longitudinal slide groove 801 is opened on the front side of the mounting block 601. The first motor 802 is fixedly installed on the top surface of the mounting block 601. The first threaded rod 803 is rotatably connected to the top wall and the bottom wall of the longitudinal slide groove 801. The output end of the first motor 802 is fixedly connected to the first threaded rod 803. The lifting plate 7 is slidably installed on the inner wall surface of the longitudinal slide groove 801 and is threadedly mounted on the surface of the first threaded rod 803.

[0030] Specifically, the output end of the first motor 802 drives the first threaded rod 803 to rotate, so that the lifting plate 7 slidably installed on the inner wall surface of the longitudinal slide groove 801 and threadedly installed on the surface of the first threaded rod 803 is lifted and lowered, thereby driving the friction welding head body 9 to gradually descend until it gradually contacts the material surface, completing the stir friction welding of the material.

[0031] The water supply mechanism 11 includes a water supply pipe 111, which is fixedly connected to the top of the nozzle 10 and fixedly inserted into the side wall of the water tank 1. A solenoid valve 112 and a water pump 113 are provided on the surface of the water supply pipe 111. The solenoid valve 112 is fixedly installed on the side of the water tank 1, and the water pump 113 is fixedly installed on the top surface of the lifting plate 7.

[0032] Specifically, when welding is completed, the solenoid valve 112 and the water pump 113 are opened. Under the suction action of the water pump 113, the water stored in the water tank 1 is transported to the nozzle 10 through the water supply pipe 111, and is sprayed on the surface of the welding part through the nozzle 10. The nozzle 10 moves back and forth synchronously with the gantry 4, which can complete the comprehensive spraying of the weld, and then use the evaporation of water to achieve rapid cooling of the weld.

[0033] The lifting and cleaning mechanism 12 includes a second electric push rod 121 and a sponge block 124. The second electric push rod 121 is fixedly installed on the surface of the lifting plate 7. The telescopic end of the second electric push rod 121 is fixedly connected to the mounting plate 122. The bottom surface of the mounting plate 122 and the top surface of the sponge block 124 are fixedly installed with Velcro 123. The Velcro 123 is arranged in pairs up and down. The Velcro 123 is used to fix the sponge block 124 to the bottom surface of the mounting plate 122.

[0034] Specifically, when welding is in progress, the sponge block 124 does not contact the surface of the material. When welding is completed, the lifting plate 7 rises under the action of the lifting mechanism 8. At this time, the telescopic end of the second electric push rod 121 drives the mounting plate 122 and the sponge block 124 to move downward, so that the sponge block 124 fits the surface of the material. As the gantry 4 moves back and forth, the sponge block 124 pushes and erases the residual water stains and welding waste after cooling at the weld. The sponge block 124 is fixed to the bottom surface of the mounting plate 122 by the Velcro 123, which is convenient for replacing the sponge block 124.

[0035] The material fixing mechanism 13 includes a transverse slide groove 131 and a second motor 133. The transverse slide groove 131 is opened on the top surface of the supporting plate 2. The number of the transverse slide grooves 131 is four and they are symmetrically arranged front to back and left to right. A slider 132 is slidably installed on the inner wall surface of the transverse slide groove 131. The second motor 133 is fixedly installed inside the supporting plate 2. The output end of the second motor 133 is fixedly connected to a second threaded rod 134. The second threaded rod 134 is rotatably installed on the inner wall surfaces of the two symmetrical transverse slide grooves 131. The second threaded rod 134 is a double-headed threaded rod. The surface of the second threaded rod 134 is threadedly connected to the slider 132. A limiting plate 135 is fixedly installed on the top surfaces of the two second threaded rods 134 arranged front to back.

[0036] Specifically, the output end of the second motor 133 drives the second threaded rod 134 to rotate. Since the second threaded rod 134 is a double-headed threaded rod, it can drive the two sliders 132 threadedly installed on the surface of the second threaded rod 134 and slidably installed in the horizontal slide groove 131 to move synchronously toward or away from each other, thereby driving the two limit plates 135 fixedly installed on the top surface of the slider 132 and arranged opposite to each other on the left and right to move synchronously, thereby adjusting the distance between the two limit plates 135, so that the limit plates 135 can clamp and limit materials of different specifications, ensuring that stir friction welding is safe and reliable.

[0037] In summary: After welding is completed, water is supplied to the nozzle 10 through the water supply mechanism 11. The nozzle 10 moves longitudinally under the action of the support plate 2 and sprays water onto the weld. The water evaporates under the action of high temperature to achieve auxiliary cooling of the weld, effectively accelerate the cooling of the material, increase the effective working time of the stir friction welding device, and effectively improve the welding efficiency. After the material is cooled, the lifting and cleaning mechanism 12 moves down to contact the surface of the material. Under the action of the support plate 2, the lifting and cleaning mechanism 12 wipes and removes the welding waste and water remaining on the surface of the material. No manual wiping is required, which is more efficient.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A friction stir welding device, characterized in that: The invention comprises a water tank (1), wherein a support plate (2) and an electric guide rail body (3) are fixedly mounted on the top surface of the water tank (1), a gantry (4) is slidably mounted on the surface of the electric guide rail body (3), a first electric push rod (5) is fixedly mounted on the bottom surface of the top of the gantry (4), an extrusion block (6) is fixedly mounted on the telescopic end of the first electric push rod (5), a lifting plate (7) is slidably mounted on the front of the extrusion block (6), a lifting mechanism (8) for driving the lifting plate (7) to rise and fall is provided on the surface of the extrusion block (6), a friction welding head body (9) is provided on the surface of the lifting plate (7), a nozzle (10) and a lifting and cleaning mechanism (12) are fixedly mounted on the surface of the lifting plate (7), a water supply mechanism (11) for connecting the insides of the nozzle (10) and the water tank (1) is fixedly connected between the top of the nozzle (10) and the water tank (1), and a material fixing mechanism (13) is provided on the top surface of the support plate (2).

2. A friction stir welding device according to claim 1, characterized in that: The extrusion block (6) comprises a mounting block (601), wherein the mounting block (601) is fixedly mounted on the bottom surface of the telescopic end of the first electric push rod (5), and a groove (602) is provided on the bottom surface of the mounting block (601). The number of the grooves (602) is two and they are symmetrically arranged on the left and right sides. A rotating shaft (603) is rotatably mounted between the left and right side surfaces of the inner wall of the groove (602), and an extrusion roller (604) is fixedly mounted on the surface of the rotating shaft (603), and the extrusion roller (604) is arranged inside the groove (602).

3. A friction stir welding device according to claim 2, characterized in that: The lifting mechanism (8) comprises a longitudinal slide groove (801), a first motor (802) and a first threaded rod (803); the longitudinal slide groove (801) is opened on the front side of the mounting block (601); the first motor (802) is fixedly mounted on the top surface of the mounting block (601); the first threaded rod (803) is rotatably connected to the top wall and the bottom wall of the longitudinal slide groove (801); the output end of the first motor (802) is fixedly connected to the first threaded rod (803); the lifting plate (7) is slidably mounted on the inner wall surface of the longitudinal slide groove (801) and is threadedly mounted on the surface of the first threaded rod (803).

4. A friction stir welding device according to claim 1, characterized in that: The water supply mechanism (11) comprises a water supply pipe (111), the water supply pipe (111) is fixedly connected to the top of the nozzle (10) and fixedly inserted into the side wall of the water storage tank (1), and a solenoid valve (112) and a water pump (113) are provided on the surface of the water supply pipe (111), the solenoid valve (112) is fixedly installed on the side of the water storage tank (1), and the water pump (113) is fixedly installed on the top surface of the lifting plate (7).

5. The friction stir welding device according to claim 1, characterized in that: The lifting and cleaning mechanism (12) comprises a second electric push rod (121) and a sponge block (124); the second electric push rod (121) is fixedly mounted on the surface of the lifting plate (7); the telescopic end of the second electric push rod (121) is fixedly connected to a mounting plate (122); the bottom surface of the mounting plate (122) and the top surface of the sponge block (124) are fixedly mounted with Velcro (123); the Velcro (123) is arranged in pairs up and down; the Velcro (123) is used to fix the sponge block (124) to the bottom surface of the mounting plate (122).

6. A friction stir welding device according to claim 1, characterized in that: The material fixing mechanism (13) comprises a transverse slide groove (131) and a second motor (133). The transverse slide groove (131) is provided on the top surface of the supporting plate (2). The number of the transverse slide grooves (131) is four and they are symmetrically arranged front to back and left to right. A slider (132) is slidably installed on the inner wall surface of the transverse slide groove (131). The second motor (133) is fixedly installed inside the supporting plate (2). A second threaded rod (134) is fixedly connected to the output end of the second motor (133). The second threaded rod (134) is rotatably installed on the inner wall surfaces of two symmetrical transverse slide grooves (131). The second threaded rod (134) is a double-headed threaded rod. The surface of the second threaded rod (134) is threadedly connected to the slider (132). A limiting plate (135) is fixedly installed on the top surfaces of the two second threaded rods (134) arranged front to back.

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