Multi-point welding accurate positioning device for structural part machining

Abstract

The utility model discloses a multi -point welding accurate positioning device for structural member processing, including the welding platform, the top of welding platform is through the upright column symmetrical hinged with two first clamping plates, the top of welding platform is through the upright column fixedly connected with two second clamping plates, the top center of welding platform is installed the slide rail, one end of slide rail is installed motor, the rotation axis of motor is fixedly connected with the lead screw, the utility model uses, and the second clamping plate is structural member one side positioning fixed reference surface, and the first clamping plate is hinged with the upright column and can rotate, and the slide block is moved along the slide rail through starting motor drive, and the angle of telescopic pneumatic cylinder is adjusted through the connecting plate movement, and after adjusting the angle, the first clamping plate is driven around the upright column positive and negative rotation through starting cylinder piston rod extension or contraction, and the structural member is clamped in cooperation with the second clamping plate, and the structural member processing positioning of different size, shape can be adapted without replacing the fixture, and the versatility of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structural component processing technology, specifically to a multi-point welding precision positioning device for structural component processing. Background Technology

[0002] Structural component processing and welding in engineering machinery and equipment is a core manufacturing technology that uses welding processes to connect metal components (such as steel plates and profiles) into structures with specific functions. It is widely used in construction, mechanical engineering, automotive, aerospace, and other fields. The processing flow typically includes preliminary preparation, welding operations, and post-weld treatment. Its core requirements are to ensure the strength, sealing, and durability of the welded joints, while also considering structural design requirements to ensure that the finished product meets mechanical performance standards such as load-bearing capacity and fatigue resistance. It is one of the key technologies in modern equipment manufacturing and infrastructure construction.

[0003] Existing welding platform positioning fixtures are mostly fixed-size integrated structures, whose clamping plate spacing and clamping angles cannot be flexibly adjusted, and can only be adapted to structural parts of specific sizes or shapes. When the size or cross-sectional shape of the structural parts to be welded changes, the original fixtures must be disassembled and replaced with special fixtures of corresponding specifications. At the same time, frequent fixture disassembly and assembly will accelerate the wear of the fixture connection parts, resulting in a shortened service life of the fixtures, an increased frequency of subsequent maintenance and replacement, and further increase the company's equipment operation and maintenance costs. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one objective of this utility model is to propose a multi-point welding precision positioning device for structural component processing. This device adjusts the angle of the telescopic cylinder by starting a motor. After adjusting the angle, the piston rod of the starting cylinder extends or retracts, causing the first clamping plate to rotate forward and backward around the column. This, in conjunction with the second clamping plate, clamps the structural component. This device can adapt to the processing and positioning of structural components of different sizes and shapes without changing the fixture.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-point welding precision positioning device for structural component processing, comprising a welding platform, wherein two first clamping plates are symmetrically hinged to the top of the welding platform via columns, and two second clamping plates are symmetrically fixedly connected to the top of the welding platform via columns. A slide rail is installed at the center of the top of the welding platform, and a motor is installed at one end of the slide rail. A lead screw is fixedly connected to the rotating shaft of the motor, and the lead screw passes through the slide rail. A slider is threadedly connected to the outer wall of the lead screw, and a connecting plate is fixedly connected to the top of the slider. Telescopic cylinders are hinged to both ends of the connecting plate, and the piston rods of the telescopic cylinders are hinged to one side of the first clamping plates.

[0007] Preferably, the outer walls of both the first clamping plate and the second clamping plate are fixedly connected with rubber blocks and metal plates.

[0008] Preferably, a limiting plate is fixedly connected to the end of the slide rail away from the motor.

[0009] Preferably, one side of the limiting plate is connected to an end cover plate via a threaded post, and one end of the lead screw passes through the limiting plate and is rotatably mounted on one side of the end cover plate via a bearing.

[0010] Preferably, the top of the welding platform is provided with several expansion holes.

[0011] Preferably, two support plates are symmetrically installed on the top of the welding platform, and the telescopic cylinder is located on top of the support plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When this utility model is used, the second clamping plate is a positioning and fixing reference surface on one side of the structural component, the first clamping plate is hinged to the column and can rotate, the slider is driven by the starter motor to move along the slide rail, and the angle of the telescopic cylinder is adjusted by the movement of the connecting plate. After the angle is adjusted, the piston rod of the starter cylinder extends or retracts, driving the first clamping plate to rotate around the column in both directions, and the second clamping plate clamps the structural component. It can adapt to the processing and positioning of structural components of different sizes and shapes without changing the fixture, thus improving the versatility of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the multi-point welding precision positioning device for processing structural components according to an embodiment of the present utility model; Figure 2 This is a top view of the multi-point welding precision positioning device for processing structural components according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the vertical cross-section of the multi-point welding precision positioning device for processing structural components according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the first clamping plate in the multi-point welding precision positioning device for processing structural components according to an embodiment of this utility model.

[0014] In the diagram: 1. Welding platform; 2. Slide rail; 3. Motor; 4. Lead screw; 5. Connecting plate; 6. Slider; 7. Telescopic cylinder; 8. First clamping plate; 9. Second clamping plate; 10. Rubber block; 11. Metal plate; 12. Column; 13. Expansion hole; 14. Threaded column; 15. End cover plate; 16. Support plate; 17. Limiting plate. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 The present invention provides a multi-point welding precision positioning device for structural component processing, including a welding platform 1.

[0017] Among them, such as Figure 1 and Figure 2 As shown, the top of the welding platform 1 is symmetrically hinged with two first clamping plates 8 via columns 12, and the top of the welding platform 1 is symmetrically fixedly connected with two second clamping plates 9 via columns 12. The outer walls of the first clamping plates 8 and the second clamping plates 9 are both fixedly connected with rubber blocks 10 and metal plates 11.

[0018] In use, welding platform 1 is used to place the structural component to be welded. Two second clamping plates 9 serve as fixed reference surfaces for positioning one side of the structural component. Two first clamping plates 8 are hinged to the column 12 and rotate around the hinge point, forming a movable clamping component on the other side of the structural component. During welding positioning, the structural component to be processed is placed on top of welding platform 1, with one side of it adhering to the second clamping plate 9 to complete the initial positioning. (Refer to...) Figure 4 The rubber block 10 and the metal plate 11 can be used as structural components for two clamping surfaces, respectively. The rubber block 10 can be used for flexible clamping and positioning, and the metal plate 11 can be used for rigid clamping and positioning.

[0019] Furthermore, the top of the welding platform 1 is provided with several expansion holes 13. The expansion holes 13 can be used to install additional positioning components, clamping devices or other auxiliary tools. By installing corresponding accessories on the expansion holes 13, the functions of the welding platform 1 can be expanded.

[0020] In this embodiment, as Figures 1-4 As shown, a slide rail 2 is installed at the top center of the welding platform 1. A motor 3 is installed at one end of the slide rail 2. A lead screw 4 is fixedly connected to the rotating shaft of the motor 3, and the lead screw 4 passes through the slide rail 2. A slider 6 is threadedly connected to the outer wall of the lead screw 4. A connecting plate 5 is fixedly connected to the top of the slider 6. Telescopic cylinders 7 are hinged to both ends of the connecting plate 5. The piston rods of the telescopic cylinders 7 are hinged to one side of the first clamping plate 8.

[0021] In use, the motor 3 is started to drive the lead screw 4 to rotate. The lead screw 4 and the slider 6 are threaded together to make the slider 6 move linearly along the slide rail 2. Then, the angle of the telescopic cylinders 7 at both ends is adjusted by the connecting plate 5 at the top of the slider 6. When the angle and position of the piston rod of the telescopic cylinder 7 are adjusted to the right position, the piston rod is driven to extend and apply a pushing force to the hinged first clamping plate 8, causing the first clamping plate 8 to rotate around the column 12 until it is tightly attached to the other side of the structural component. The second clamping plate 9 is used to clamp and fix the structural component from both sides.

[0022] It should be noted that, based on the requirements for both the flexibility and rigidity of the structural components, when rigid clamping is required, the piston rod of the telescopic cylinder 7 extends outward and applies a pushing force toward the structural component to the side of the hinged first clamping plate 8 with the metal plate 11. This causes the metal plate 11 on the first clamping plate 8 to rotate around the column 12 toward the structural component until it is tightly fitted to the other side of the structural component. This, together with the second clamping plate 9, forms a positive clamping and fixing of the structural component from both sides.

[0023] When flexible clamping is required, the piston rod of the telescopic cylinder 7 retracts in the opposite direction, applying a pulling force away from the structural component to the hinged first clamping plate 8, causing the side of the first clamping plate 8 with the rubber block 10 to rotate in the opposite direction around the column 12 until the rubber block 10 fits against the specific clamping surface of the structural component, and forms a flexible clamping and positioning with the second clamping plate 9.

[0024] Furthermore, refer to Figure 3 A limiting plate 17 is fixedly connected to the end of the slide rail 2 away from the motor 3. When the slider 6 moves along the slide rail 2 away from the motor 3, the limiting plate 17 can limit the movement range of the slider 6. An end cover plate 15 is connected to one side of the limiting plate 17 through a threaded post 14. One end of the lead screw 4 passes through the limiting plate 17 and is rotatably mounted on one side of the end cover plate 15 through a bearing. The end cover plate 15 is connected to the limiting plate 17 through the threaded post 14, providing a stable support point for the end of the lead screw 4 away from the motor 3. At the same time, the bearing allows the lead screw 4 to rotate flexibly on the end cover plate 15, reducing the frictional resistance when the lead screw 4 rotates.

[0025] Specifically, two support plates 16 are symmetrically installed on the top of the welding platform 1. The telescopic cylinder 7 is located on the top of the support plate 16. The support plate 16 supports the telescopic cylinder 7, raising it to a suitable height so that the piston rod of the telescopic cylinder 7 is more matched with the hinge position of the first clamping plate 8.

[0026] Based on the above technical solution, the working steps of this solution are summarized as follows: When this utility model is used, the welding platform 1 is used to place the structural component to be welded, wherein the two second clamping plates 9 serve as fixed reference surfaces for positioning one side of the structural component, and the two first clamping plates 8 are hinged to the column 12 and rotate around the hinge point to form a movable clamping component on the other side of the structural component.

[0027] During welding positioning, the structural component to be processed is placed on the top of the welding platform 1, with one side of it adhering to the second clamping plate 9 for initial positioning. Then, the motor 3 is started to drive the lead screw 4 to rotate. Utilizing the threaded engagement between the lead screw 4 and the slider 6, the slider 6 moves linearly along the slide rail 2. The angles of the telescopic cylinders 7 at both ends are adjusted by the connecting plate 5 at the top of the slider 6. Once the angle and position of the piston rod of the telescopic cylinder 7 are adjusted to the correct position, the piston rod is driven to extend, applying a pushing force to the hinged first clamping plate 8, causing the first clamping plate 8 to rotate around the column 12 until it is tightly adhering to the other side of the structural component. Together with the second clamping plate 9, the structural component is clamped and fixed from both sides. This allows for the processing of structural components of different sizes and shapes without the need to change the fixtures, reducing equipment replacement costs and improving the versatility of the device.

[0028] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model 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 this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-point welding precision positioning device for structural component processing, comprising a welding platform (1), characterized in that: The top of the welding platform (1) is symmetrically hinged with two first clamping plates (8) via a column (12). The top of the welding platform (1) is symmetrically fixed with two second clamping plates (9) via a column (12). A slide rail (2) is installed at the center of the top of the welding platform (1). A motor (3) is installed at one end of the slide rail (2). A lead screw (4) is fixedly connected to the rotating shaft of the motor (3), and the lead screw (4) passes through the slide rail (2). A slider (6) is threaded to the outer wall of the lead screw (4). A connecting plate (5) is fixedly connected to the top of the slider (6). Telescopic cylinders (7) are hinged to both ends of the connecting plate (5). The piston rods of the telescopic cylinders (7) are hinged to one side of the first clamping plate (8).

2. The multi-point welding precision positioning device for structural component processing according to claim 1, characterized in that: The outer walls of the first clamping plate (8) and the second clamping plate (9) are fixedly connected with rubber blocks (10) and metal plates (11).

3. The multi-point welding precision positioning device for structural component processing according to claim 1, characterized in that: A limiting plate (17) is fixedly connected to one end of the slide rail (2) away from the motor (3).

4. The multi-point welding precision positioning device for structural component processing according to claim 3, characterized in that: One side of the limiting plate (17) is connected to an end cover plate (15) via a threaded post (14). One end of the lead screw (4) passes through the limiting plate (17) and is rotatably mounted on one side of the end cover plate (15) via a bearing.

5. The multi-point welding precision positioning device for structural component processing according to claim 1, characterized in that: The welding platform (1) has several expansion holes (13) on its top.

6. The multi-point welding precision positioning device for structural component processing according to claim 1, characterized in that: Two support plates (16) are symmetrically installed on the top of the welding platform (1), and the telescopic cylinder (7) is located on the top of the support plate (16).

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