Friction stir welding broken needle extracting device

Abstract

The utility model relates to a friction stir welding broken needle extracting device which comprises a supporting frame and a fixing plate, the side face of the fixing plate is fixedly installed on the top of the supporting frame, a moving plate is arranged on the front face of the fixing plate in a sliding mode, and a clamping mechanism used for fixing a broken needle is arranged on the front face of the moving plate. A cooling mechanism for cooling the broken needle is arranged on one side of the moving plate; the extending end of a first hydraulic cylinder is controlled to extend, so that a moving plate drives two clamping arms to move downwards, the top of a broken needle is located between the two clamping arms, in the process, a rolling wheel slides to the side face, away from the moving plate, of the rolling wheel from the inclined face of a trapezoidal block, a transmission rod drives a piston to move transversely, grinding oil in an oil inlet pipe passes through a transverse pipe, and the grinding oil is ground. And in the transverse moving process of the piston, the sprayed grinding oil faces the broken needle and cools the broken needle and the aluminum alloy plate, so that a gap is formed between the broken needle and the aluminum alloy plate, and the effect of conveniently extracting the broken needle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy plate welding, and particularly relates to a friction stir welding broken needle extraction device. Background Technique

[0002] Friction stir welding is a solid-phase welding technology that can weld metals that are difficult to weld by traditional fusion welding. Especially in aluminum alloy welding, most aluminum alloy plates can be welded. During the friction stir welding process, the stirring pin will inevitably break after welding to a certain length. After the stirring pin breaks, the bottom of the broken pin is in a clamped state with the two aluminum alloy plates, and the top of the broken pin extends outside the two aluminum alloy plates. Since most of the broken pin is stuck between the two aluminum alloy plates, it is inconvenient to effectively extract the broken pin. Content of the Utility Model

[0003] The technical problem solved by this solution is:

[0004] (1) How to solve the problem that it is inconvenient to effectively extract the broken pin because most of the broken pin is stuck between the two aluminum alloy plates.

[0005] The purpose of the utility model can be realized by the following technical scheme: a friction stir welding broken needle extraction device, including a support frame and a fixing plate. The side of the fixing plate is fixedly installed on the top of the support frame, and a moving plate is slidably arranged on the front of the fixing plate through a first guide rail. A clamping mechanism for fixing the broken needle is arranged on the front of the moving plate, and a cooling mechanism for cooling the broken needle is arranged on one side of the moving plate.

[0006] The cooling mechanism includes a horizontal pipe fixedly connected to the fixing plate. The middle part of the top surface of the horizontal pipe is communicated with an oil inlet pipe for conveying grinding oil, and the middle part of the bottom surface of the horizontal pipe is communicated with a spray pipe. A piston for blocking the input end of the spray pipe is slidably arranged on the inner wall of the horizontal pipe. One end of the piston away from the moving plate is elastically provided with a thrust spring between the inner wall of the horizontal pipe.

[0007] A further technical improvement of the present utility model lies in that: a trapezoidal block is fixedly installed on the side wall of the moving plate facing the horizontal pipe, the inclined surface of the trapezoidal block faces the oil injection pipe, one end of the piston far from the thrust spring is fixedly connected with a transmission rod, one end of the transmission rod movably penetrates through the horizontal pipe and is rotatably provided with a roller, and the position of the roller corresponds to the position of the trapezoidal block; by controlling the extension of the extending end of the first hydraulic cylinder, the moving plate drives the two clamping arms to move downward, so that the top of the broken needle is located between the two clamping arms. During this process, the trapezoidal block also moves downward, and the roller slides from the inclined surface of the trapezoidal block to the side away from the moving plate, so that the transmission rod drives the piston to move horizontally, so that the grinding oil in the oil inlet pipe passes through the horizontal pipe and then enters the oil injection pipe. During the horizontal movement of the piston, the grinding oil ejected from the oil injection pipe faces the broken needle, cooling the broken needle and the aluminum alloy plate. Both the broken needle and the aluminum alloy plate contract when cooled and deform, so that a gap is generated between the broken needle and the aluminum alloy plate, which facilitates the extraction of the broken needle; during the resetting of the piston until the input end of the oil injection pipe is completely blocked, there is still a small amount of grinding oil ejected from the oil injection pipe, so that during the extraction of the broken needle by the cooperation of the two clamping arms and the first hydraulic cylinder, a small amount of grinding oil also enters the gap between the broken needle and the aluminum alloy plate, reducing the friction between the broken needle and the aluminum alloy plate and further improving the efficiency of extracting the broken needle.

[0008] A further technical improvement of the present utility model lies in that: the clamping mechanism includes two pins rotatably connected to the front surface of the moving plate, one end of each pin is fixedly connected with a clamping arm, and a gear is fixedly installed in the middle of each pin. A rack is arranged between the two clamping arms, and the rack is respectively meshed with the two gears.

[0009] A further technical improvement of the present utility model lies in that: the back surface of the rack is slidably connected with the moving plate through a second guide rail, and a second hydraulic cylinder for driving the rack to move up and down is also fixedly installed on the moving plate.

[0010] A further technical improvement of the present utility model lies in that: a first hydraulic cylinder for driving the moving plate to move up and down is also fixedly installed on the front surface of the fixed plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] When the utility model is in use, by controlling the extension of the extending end of the first hydraulic cylinder, the moving plate drives the two clamping arms to move downward, so that the top of the broken needle is located between the two clamping arms. During this process, the trapezoidal block also moves downward, and the roller slides from the inclined surface of the trapezoidal block to the side away from the moving plate, so that the transmission rod drives the piston to move horizontally, so that the grinding oil in the oil inlet pipe passes through the horizontal pipe and then enters the oil spray pipe. During the horizontal movement of the piston, the grinding oil sprayed from the oil spray pipe faces the broken needle, cools the broken needle and the aluminum alloy plate. The broken needle and the aluminum alloy plate both contract when cooled and deform, so that a gap is generated between the broken needle and the aluminum alloy plate, which facilitates the extraction of the broken needle; during the process of the piston resetting to completely block the input end of the oil spray pipe, there is still a small amount of grinding oil sprayed in the oil spray pipe, so that during the process of extracting the broken needle by cooperating with the first hydraulic cylinder through the two clamping arms, a small amount of grinding oil also enters the gap between the broken needle and the aluminum alloy plate, reducing the friction between the broken needle and the aluminum alloy plate and further improving the efficiency of extracting the broken needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the drawings.

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the cooling mechanism structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the clamping mechanism structure of the present utility model.

[0017] In the figure: 1, the first hydraulic cylinder; 2, the support frame; 3, the clamping mechanism; 4, the moving plate; 5, the cooling mechanism; 6, the fixing plate; 31, the gear; 32, the clamping arm; 33, the rack; 34, the pin shaft; 35, the second hydraulic cylinder; 51, the transmission rod; 52, the oil spray pipe; 53, the horizontal pipe; 54, the piston; 55, the oil inlet pipe; 56, the trapezoidal block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 3As shown in the figure, a friction stir welding broken needle extraction device includes a support frame 2 and a fixing plate 6. The side of the fixing plate 6 is fixedly installed on the top of the support frame 2, and a moving plate 4 is slidably arranged on the front of the fixing plate 6 through a first guide rail. A clamping mechanism 3 for fixing the broken needle is arranged on the front of the moving plate 4, and a cooling mechanism 5 for cooling the broken needle is arranged on one side of the moving plate 4.

[0020] Please refer to Figures 1 - 3 As shown in the figure, the above-mentioned cooling mechanism 5 includes a cross tube 53 fixedly connected to the fixing plate 6. An oil inlet pipe 55 for conveying grinding oil is communicated with the middle of the top surface of the cross tube 53, and an oil spray pipe 52 is communicated with the middle of the bottom surface of the cross tube 53. A piston 54 for blocking the input end of the oil spray pipe 52 is slidably arranged on the inner wall of the cross tube 53. One end of the piston 54 away from the moving plate 4 and the inner wall of the cross tube 53 are elastically provided with a thrust spring.

[0021] Please refer to Figures 1 - 3 As shown in the figure, a trapezoidal block 56 is fixedly installed on the side wall of the moving plate 4 facing the cross tube 53. The inclined surface of the trapezoidal block 56 faces the oil spray pipe 52. One end of the piston 54 away from the thrust spring is fixedly connected with a transmission rod 51. One end of the transmission rod 51 movably penetrates through the cross tube 53 and is rotatably provided with a roller. The position of the roller corresponds to the position of the trapezoidal block 56. By controlling the extension of the extending end of the first hydraulic cylinder 1, the moving plate 4 drives the two clamping arms 32 to move downward, so that the top of the broken needle is located between the two clamping arms 32. During this process, the trapezoidal block 56 also moves downward, and the roller slides from the inclined surface of the trapezoidal block 56 to its side away from the moving plate 4, so that the transmission rod 51 drives the piston 54 to move horizontally, so that the grinding oil in the oil inlet pipe 55 passes through the cross tube 53 and then enters the oil spray pipe 52. During the horizontal movement of the piston 54, the grinding oil sprayed from the oil spray pipe 52 faces the broken needle, cooling the broken needle and the aluminum alloy plate. Both the broken needle and the aluminum alloy plate contract when cooled and deform, so that a gap is generated between the broken needle and the aluminum alloy plate, which plays a role in facilitating the extraction of the broken needle. During the process of the piston 54 resetting to completely block the input end of the oil spray pipe 52, a small amount of grinding oil still sprays out in the oil spray pipe 52, so that during the process of extracting the broken needle by the cooperation of the two clamping arms 32 and the first hydraulic cylinder 1, a small amount of grinding oil also enters the gap between the broken needle and the aluminum alloy plate, reducing the friction between the broken needle and the aluminum alloy plate and further improving the efficiency of extracting the broken needle.

[0022] Please refer to Figures 1 - 3 As shown in the figure, the above-mentioned clamping mechanism 3 includes two pin shafts 34 rotatably connected to the front of the moving plate 4. One end of the pin shaft 34 is fixedly connected with a clamping arm 32, and a gear 31 is fixedly installed in the middle of the pin shaft 34. A rack 33 is arranged between the two clamping arms 32, and the rack 33 is meshed with the two gears 31 respectively.

[0023] Please refer toFigure 3 As shown, the back surface of the above-mentioned rack 33 is slidably connected to the moving plate 4 through a second guide rail, and a second hydraulic cylinder 35 for driving the rack 33 to lift is also fixedly installed on the moving plate 4.

[0024] Please refer to Figure 1 As shown, a first hydraulic cylinder 1 for driving the moving plate 4 to lift is also fixedly installed on the front surface of the above-mentioned fixed plate 6.

[0025] Working principle: When the present utility model is in use, first, during the friction stir welding process, if a needle breakage occurs, the support frame 2 needs to be placed at the needle-taking station. At this time, the positions of the two clamping arms 32 correspond to the position of the broken needle. By controlling the extension of the extending end of the first hydraulic cylinder 1, the moving plate 4 drives the two clamping arms 32 to move downward, so that the top of the broken needle is located between the two clamping arms 32. During this process, the trapezoidal block 56 also moves downward, and the roller slides from the inclined surface of the trapezoidal block 56 to its side away from the moving plate 4, so that the transmission rod 51 drives the piston 54 to move horizontally, so that the grinding oil in the oil inlet pipe 55 passes through the horizontal pipe 53 and then enters the spray pipe 52. During the horizontal movement of the piston 54, the grinding oil sprayed from the spray pipe 52 faces the broken needle, cools down the broken needle and the aluminum alloy plate. Both the broken needle and the aluminum alloy plate contract when cooled, deform, and a gap is generated between the broken needle and the aluminum alloy plate, which facilitates the extraction of the broken needle. Control the contraction of the extending end of the second hydraulic cylinder 35, so that the rack 33 moves upward, so that the two gears 31 drive the corresponding clamping arms 32 to rotate, clamp the top of the broken needle, and then control the contraction and reset of the extending end of the first hydraulic cylinder 1. During the process of the piston 54 resetting to completely block the input end of the spray pipe 52, there is still a small amount of grinding oil sprayed in the spray pipe 52, so that during the process of extracting the broken needle by the cooperation of the two clamping arms 32 and the first hydraulic cylinder 1, a small amount of grinding oil also enters the gap between the broken needle and the aluminum alloy plate, reducing the friction between the broken needle and the aluminum alloy plate and further improving the efficiency of extracting the broken needle.

[0026] The above is only a preferred embodiment of the present utility model, and it is not intended to limit the present utility model in any form. Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content within the scope of the technical solution of the present utility model to make equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A device for extracting broken needles of friction stir welding, comprising a support frame (2) and a fixed plate (6), wherein the side of the fixed plate (6) is fixedly mounted on the top of the support frame (2), and a movable plate (4) is slidably arranged on the front of the fixed plate (6), characterized in that: A clamping mechanism (3) for fixing the broken needle is arranged on the front of the movable plate (4), and a cooling mechanism (5) for cooling the broken needle is arranged on one side of the movable plate (4); The cooling mechanism (5) comprises a transverse tube (53) fixedly connected to the fixed plate (6); an oil inlet pipe (55) for conveying grinding oil is connected to the middle of the top surface of the transverse tube (53); and an oil injection pipe (52) is connected to the middle of the bottom surface of the transverse tube (53); a piston (54) for blocking the input end of the oil injection pipe (52) is slidably arranged on the inner wall of the transverse tube (53); and a thrust spring is elastically arranged between the end of the piston (54) away from the movable plate (4) and the inner wall of the transverse tube (53).

2. A friction stir welding broken needle extraction device according to claim 1, characterized in that: A trapezoidal block (56) is fixedly mounted on the side wall of the movable plate (4) facing the transverse tube (53), the inclined surface of the trapezoidal block (56) being arranged facing the oil injection tube (52), one end of the piston (54) away from the thrust spring being fixedly connected to a transmission rod (51), one end of the transmission rod (51) movably passes through the transverse tube (53) and is rotatably provided with a roller, the position of the roller corresponding to the position of the trapezoidal block (56).

3. The device for extracting broken needles in friction stir welding according to claim 1, characterized in that: The clamping mechanism (3) comprises two pins (34) rotatably connected to the front of the moving plate (4), one end of the pin (34) is fixedly connected to a clamping arm (32), and a gear (31) is fixedly installed in the middle of the pin (34), a rack (33) is arranged between the two clamping arms (32), and the rack (33) is respectively meshed and connected with the two gears (31).

4. A friction stir welding broken needle extraction device according to claim 3, characterized in that: The back side of the rack (33) is slidably connected to the movable plate (4), and a second hydraulic cylinder (35) for driving the rack (33) to rise and fall is also fixedly mounted on the movable plate (4).

5. The device for extracting a broken needle of a friction stir welding according to claim 1, characterized in that: A first hydraulic cylinder (1) for driving the movable plate (4) to move up and down is also fixedly mounted on the front side of the fixed plate (6).

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