Explosive welding local defect repairing device

Abstract

The utility model relates to the technical field of explosive welding, in particular to an explosive welding local defect repairing device. Comprising a workbench and a positioning device for erecting a gun barrel on one side of the workbench; the positioning device comprises an arc-shaped cantilever and a limiting sleeve, and the limiting sleeve is fixedly installed at the output end of the first motor. One end of the arc-shaped cantilever is inserted into the limiting sleeve, and a mounting seat is fixedly mounted at the other end of the arc-shaped cantilever; the top of the gun barrel is fixed through the mounting base, and the opening direction of the gun barrel faces the circle center of the arc-shaped cantilever all the time. A second motor is fixedly installed on one side of the limiting sleeve, an output shaft of the second motor extends into the limiting sleeve and is fixedly provided with a gear, and the gear is meshed with a first rack arranged on the back of the arc-shaped cantilever. The three-dimensional angle adjustment of the gun barrel relative to a certain defect area on the composite metal plate is realized by using a simple mechanical structure, and the precise repair requirements of local defects with non-uniform positions and shapes can be effectively met.

Description

Technical Field

[0001] This utility model relates to the field of explosive welding technology, and in particular to a device for repairing local defects in explosive welding. Background Technology

[0002] Explosive welding, as a special welding method, can produce composite plates with a combination of various metals. To date, there are more than 300 alloy metal composite plates that have been explosively welded together. Due to the simplicity of the explosive welding process, the composite metal plates have many advantages such as excellent bonding performance, high bonding strength, and strong reprocessing ability. Currently, explosively welded composite metal plates have been widely used in many industries such as petrochemical, metallurgical products, machinery casting, and aerospace.

[0003] However, during the explosive welding process, composite metal sheets are prone to small-area bulging, weak bonding in some areas, incomplete bonding at the edges, and poor welding in the detonator area. These issues significantly impact subsequent processing and reduce processing efficiency.

[0004] Small-scale defects in these composite metal plates after explosive welding present challenges in repair. Due to the different microstructures of the metal materials, some metal combinations are difficult to weld together, easily leading to post-weld cracking. For example, direct welding of titanium-steel composite metal plates readily produces Ti-Fe intermetallic compounds, resulting in cracks after welding repair. Therefore, welding repair of titanium-steel composite metal plates is difficult, leading to waste of the entire composite metal plate. To address these defects, existing methods utilize the impact energy generated by compressed gas within the gun barrel to strike the defect, correcting and repairing bulges and instability.

[0005] However, this repair process requires flexible adjustment of the impact angle of the gun barrel relative to the area to be repaired in order to ensure the accuracy and stability of the repair. Furthermore, since the location and shape of defects such as bulges and instability are not uniform, a high range and precision of gun barrel angle adjustment are required to achieve good repair results. Utility Model Content

[0006] This invention provides a device for repairing local defects in explosive welding, which allows for a wide range and more flexible adjustment of the angle between the gun barrel and the defect area, enabling precise repair of local defects in explosive welding. The specific method is as follows:

[0007] The explosive welding local defect repair device provided by this utility model includes a gun barrel, a piston and a composite plate are installed inside the gun barrel, and the piston is powered by an external air source to control the composite plate to rush towards the defect area of ​​the composite plate located at the gun barrel outlet to achieve local defect repair; it also includes a workbench and a positioning device for mounting the gun barrel on one side of the workbench.

[0008] The positioning device includes an arc-shaped cantilever and a limiting sleeve. The limiting sleeve is fixedly installed at the output end of a first motor. One end of the arc-shaped cantilever is inserted into the limiting sleeve, and the other end is fixedly installed with a mounting base. The mounting base fixes the top of the gun barrel, and the opening of the gun barrel always faces the center of the arc-shaped cantilever. A second motor is fixedly installed on one side of the limiting sleeve. The output shaft of the second motor extends into the limiting sleeve and is fixedly installed with a gear. The gear meshes with a first rack on the back of the arc-shaped cantilever.

[0009] In one embodiment, a slide groove is provided along the length of the workbench on the side near the No. 1 motor; the No. 1 motor is slidably installed in the slide groove, and a hydraulic rod is fixedly installed at one end of the slide groove; the extension end of the hydraulic rod is fixedly connected to the No. 1 motor.

[0010] In one embodiment, the mounting base has a mounting hole, and the gun barrel is inserted into the mounting hole; a No. 3 motor is fixedly mounted on one side of the mounting base, and a gear is fixedly mounted on the output shaft of the No. 3 motor. The gear is located in the mounting hole and meshes with a No. 2 rack mounted on the gun barrel body.

[0011] In one embodiment, airbags are installed on the upper and lower edges of the mounting hole.

[0012] In one embodiment, a limiting groove is formed on the lower surface of the arc-shaped cantilever; the opening of the limiting sleeve is provided with a limiting block extending into the limiting groove.

[0013] In one embodiment, the lower surface of the arc-shaped cantilever is further provided with a bundle tube groove.

[0014] In one embodiment, a baffle is installed between the legs of the workbench.

[0015] This invention, through ingenious spatial layout and structural design, uses a simple mechanical structure to achieve three-dimensional angle adjustment of the gun barrel relative to a defective area on a composite metal plate, effectively adapting to the precise repair requirements of such local defects with inconsistent positions and shapes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the overall structure of this utility model;

[0018] In the diagram: 1. Gun barrel; 2. Worktable; 3. Arc-shaped cantilever; 4. Motor 1; 5. Limiting sleeve; 6. Mounting base; 8. Motor 2; 9. Rack 1; 10. Slide groove; 11. Hydraulic rod; 12. Mounting hole; 13. Motor 3; 14. Rack 2; 15. Airbag; 16. Limiting groove; 17. Bundle tube groove; 18. Baffle. Detailed Implementation

[0019] 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.

[0020] See Figure 1-2 This utility model provides a device for repairing local defects in explosive welding, including a barrel 1, a piston and a composite plate are installed inside the barrel 1, and the piston is powered by an external air source to control the composite plate to rush toward the defect area of ​​the composite plate located at the outlet of the barrel 1 to achieve local defect repair; it also includes a workbench 2 and a positioning device for mounting the barrel 1 on one side of the workbench 2.

[0021] The positioning device includes an arc-shaped cantilever 3 and a limiting sleeve 5. The limiting sleeve 5 is fixedly installed at the output end of the first motor 4. One end of the arc-shaped cantilever 3 is inserted into the limiting sleeve 5, and the other end is fixedly installed with a mounting base 6. The mounting base 6 fixes the top of the gun barrel 1, and the opening direction of the gun barrel 1 always faces the center of the arc-shaped cantilever 3. A second motor 8 is fixedly installed on one side of the limiting sleeve 5. The output shaft of the second motor 8 extends into the limiting sleeve 5 and is fixedly installed with a gear. The gear meshes with a first rack 9 opened on the back of the arc-shaped cantilever 3.

[0022] The barrel 1 is similar to an air cannon. It is filled with air from an external air source. Valves and other valves are used as control switches so that the gas pressure can be converted into the power to drive the piston to push out. The piston pushes the compressed gas like a bullet to push the composite board out and rush towards the defect area of ​​the composite board, so as to use this impact force to repair the defect area.

[0023] However, during this repair process, the angle adjustment between the nozzle of the barrel 1 and the defective area is very important, because it relates to the impact angle of the composite plate being ejected, which directly affects the quality and effect of the repair.

[0024] When it is necessary to repair the defective area of ​​the composite board, the engineers observe the location, shape and size of the defect and start the No. 1 motor 4. The output shaft of the No. 1 motor 4 can drive the entire limiting sleeve 5 to deflect. Since one end of the arc-shaped cantilever 3 is inserted into the limiting sleeve 5, the arc-shaped cantilever 3 will deflect together with the limiting sleeve 5, which in turn drives the gun barrel 1 installed at the other end of the arc-shaped cantilever 3 to swing left and right, that is, adjust the left and right angle of the opening of the gun barrel 1 relative to the defective area.

[0025] Start the second motor 8. The output shaft of the second motor 8 can drive the gear to rotate. The rotating gear meshes with the first rack 9 on the back of the arc cantilever 3, driving the entire arc cantilever 3 to slide in and out relative to the limit sleeve 5, thereby adjusting the front and rear angle of the barrel 1 opening relative to the defect area.

[0026] Furthermore, because the opening of the barrel 1 always faces the center of the arc-shaped cantilever 3, neither the aforementioned front-to-back angle adjustment nor the left-to-right angle adjustment will cause the opening of the barrel 1 to leave the defect area, thus avoiding the problem of repeated calibration later. In other words, this embodiment, through the design of the arc-shaped cantilever 3, forms an approximately hemispherical angle adjustment area above the defect area, fully meeting the adjustment needs of various angles, ensuring the accuracy of the barrel 1's bombardment, and thereby improving the repair precision and quality.

[0027] A slide groove 10 is provided on the side of the workbench 2 near the first motor 4 along the length of the workbench 2; the first motor 4 is slidably installed in the slide groove 10, and a hydraulic rod 11 is fixedly installed at one end of the slide groove 10; the extended end of the hydraulic rod 11 is fixedly connected to the first motor 4.

[0028] A composite plate may have more than one defect. Instead of directly adjusting the position of the composite plate, the hydraulic rod 11 can drive the No. 1 motor 4 to slide horizontally along the slide groove 10, which makes it easier to change the center position of the arc cantilever 3 and then move the barrel 1 to another area to be repaired. This ensures the continuity of repairing multiple defective areas on a composite plate.

[0029] The mounting base 6 has a mounting hole 12, and the gun barrel 1 is inserted into the mounting hole 12. A No. 3 motor 13 is fixedly installed on one side of the mounting base 6. A gear is fixedly installed on the output shaft of the No. 3 motor 13. The gear is located in the mounting hole 12 and meshes with the No. 2 rack 14 installed on the body of the gun barrel 1.

[0030] When the composite plate is thick or the bulge or warped edge is high, the height of the lower end of the barrel 1 and the worktable 2 can be adjusted by the meshing transmission of the gear driven by motor 13 and rack 14 to meet the repair requirements. That is, the distance between the barrel 1 and the defect area can be adjusted by motor 13 to meet the repair requirements of different thicknesses and different defect heights.

[0031] Airbags 15 are installed on the upper and lower edges of the mounting hole 12.

[0032] The barrel 1 is inserted into the mounting hole 12. Apart from the clamping of the mounting hole 12 and the meshing of the gear with the second rack 14, the barrel 1 has no other means of fixing. Gas is continuously introduced into the barrel 1 to pressurize it and provide sufficient power to propel the composite material toward the defect area. During the impact, the reaction force will pose a new challenge to the stability of the barrel 1. Therefore, airbags 15 are installed at the upper and lower edges of the mounting hole 12. Before the barrel 1 impacts, airbags 15 are inflated to encircle and clamp the barrel 1, further enhancing the installation stability of the barrel 1 by the mounting base 6.

[0033] The lower surface of the arc-shaped cantilever 3 has a limiting groove 16; the opening of the limiting sleeve 5 has a limiting block extending into the limiting groove 16. The arc-shaped cantilever 3 is relatively long, and whether it swings left and right or rotates back and forth, it relies on the limiting sleeve 5 to limit the other end of the arc-shaped cantilever 3. In order to enhance the limiting stability of the limiting sleeve 5 for the arc-shaped cantilever 3, the limiting block at the opening of the limiting sleeve 5 is inserted into the limiting groove 16. During the back-and-forth sliding of the arc-shaped cantilever 3, the limiting block can slide in the limiting groove 16 to ensure the stability of the back-and-forth sliding of the arc-shaped cantilever 3.

[0034] The lower surface of the arc-shaped cantilever 3 is also provided with a bundle tube groove 17.

[0035] Both the airbag 15 and the barrel 1 require an external air source. However, the curved cantilever 3 needs to be adjusted in real time according to the location of the defect. Therefore, if the air pipes connecting the airbag 15 or the barrel 1 are allowed to be arranged haphazardly, the entire work site will become cluttered, and the air pipes are prone to damage. Therefore, the opening of the tube bundle slot 17 can accommodate all the air pipes, which not only protects the air pipes but also ensures the cleanliness of the work site.

[0036] A baffle 18 is installed between the legs of the workbench 2.

[0037] The lower end of the arc-shaped cantilever 3 is located below the workbench 2. That is, all areas under the workbench 2 that the arc-shaped cantilever 3 can move to should be protected to prevent the operator's feet or other parts from entering under the workbench 2 and colliding with the arc-shaped cantilever 3, causing damage to the arc-shaped cantilever 3 or injury to the personnel.

[0038] In summary, the design of the arc-shaped cantilever 3 allows the barrel 1, which faces the center of the arc-shaped cantilever 3, to be mounted above the defect area. The forward and backward, left and right sliding of the arc-shaped cantilever 3 creates an approximately hemispherical angle adjustment space for the defect area, which meets the adjustment requirements for the height and angle of various defects and ensures the quality and effect of defect repair.

[0039] 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. An explosive welding local defect repair device, comprising a barrel (1), wherein a piston and a composite plate are disposed inside the barrel (1), and an external air source provides power to the piston to control the composite plate to rush toward the defect area of ​​the composite plate located at the outlet of the barrel (1) to achieve local defect repair; characterized in that, It also includes a workbench (2) and a positioning device for mounting the gun barrel (1) on one side of the workbench (2); The positioning device includes an arc-shaped cantilever (3) and a limiting sleeve (5). The limiting sleeve (5) is fixedly installed at the output end of the first motor (4). One end of the arc-shaped cantilever (3) is inserted into the limiting sleeve (5), and the other end is fixedly installed with a mounting base (6). The mounting base (6) fixes the top of the gun barrel (1) and the opening direction of the gun barrel (1) always faces the center of the arc-shaped cantilever (3). A second motor (8) is fixedly installed on one side of the limiting sleeve (5). The output shaft of the second motor (8) extends into the limiting sleeve (5) and is fixedly installed with a gear. The gear meshes with a first rack (9) opened on the back of the arc-shaped cantilever (3).

2. The explosive welding local defect repair device according to claim 1, characterized in that: The workbench (2) has a slide groove (10) on the side near the first motor (4) along the length of the workbench (2); the first motor (4) is slidably installed in the slide groove (10), and a hydraulic rod (11) is fixedly installed at one end of the slide groove (10); the extension end of the hydraulic rod (11) is fixedly connected to the first motor (4).

3. The explosive welding local defect repair device according to claim 1, characterized in that: The mounting base (6) has a mounting hole (12), and the gun barrel (1) is inserted into the mounting hole (12). A No. 3 motor (13) is fixedly installed on one side of the mounting base (6), and a gear is fixedly installed on the output shaft of the No. 3 motor (13). The gear is located in the mounting hole (12) and meshes with the No. 2 rack (14) installed on the body of the gun barrel (1).

4. The explosive welding local defect repair device according to claim 3, characterized in that: Airbags (15) are installed on the upper and lower edges of the mounting hole (12).

5. The explosive welding local defect repair device according to claim 1, characterized in that: The lower surface of the arc-shaped cantilever (3) is provided with a limiting groove (16); the opening of the limiting sleeve (5) is provided with a limiting block extending into the limiting groove (16).

6. The explosive welding local defect repair device according to claim 1, characterized in that: The lower surface of the arc-shaped cantilever (3) is also provided with a bundle tube groove (17).

7. The explosive welding local defect repair device according to claim 1, characterized in that: A baffle (18) is installed between the legs of the workbench (2).

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