Compressor air duct welding positioning device and method

Abstract

The invention provides a compressor air duct welding and positioning device and method, and belongs to the technical field of compressor air duct automatic welding, the compressor air duct welding and positioning device comprises a supporting plate, an adjustable limiting device and a pressing device parallel to the supporting plate, and clamping and positioning of an air duct for completing welding seam welding on an automatic welding machine are completed through cooperation of the limiting device and the pressing device; the workpiece is limited through movement of the limiting device, the pressing device presses and fixes the workpiece on the supporting plate after the workpiece is limited so as to adapt to different sizes, placement modes and placement angles of the workpiece, the workpiece is rapidly and stably positioned and pressed on the supporting plate, and the workpiece is accurately positioned. The problems that in a traditional clamping mode, due to the fact that the curved surface of an air duct workpiece is smooth and has no acting point, clamping is not stable, and deviation is prone to occurring are solved, a reliable clamping foundation is provided for follow-up automatic welding, and therefore the stability and consistency of the welding process can be improved.

Description

Technical Field

[0001] This application belongs to the field of automatic welding technology for compressor air ducts, specifically relating to a welding positioning device and method for compressor air ducts. Background Technology

[0002] In modern industrial production, the compressor duct, as a crucial component of turbine compressors, directly impacts product performance and lifespan through its welding quality. Traditional MCL compressor duct manufacturing involves assembling stamped sheet metal and manually welding it into a complete workpiece, resulting in inherent drawbacks such as low efficiency, high labor intensity, and inconsistent weld quality. With increasing demand, manual welding can no longer meet production cycle requirements, making the application of automated welding equipment inevitable. Currently, while attempts are being made to introduce automated welding machines to replace manual labor, existing automated welding equipment still faces numerous technical challenges when welding compressor ducts.

[0003] During automatic welding, two half-air duct plates are usually welded together to form an air duct, and then the air duct is welded to the flange. However, since the surface of the air duct is a smooth conical curved surface and there are no positioning or clamping points inside or outside, the air duct is difficult to be stably clamped on the worktable of the automatic welding machine, which affects the stability and quality consistency of the welding. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, a first aspect of the present invention provides a compressor duct welding positioning device.

[0006] A second aspect of the present invention provides a method for welding and positioning a compressor duct.

[0007] In view of this, a first aspect of the embodiments of this application provides a compressor duct welding positioning device, comprising: Pallet, the workpiece is placed on the pallet; The limiting assembly includes several limiting devices, which are adjustablely mounted on the pallet to limit the workpiece. The clamping assembly includes several clamping devices arranged parallel to the pallet, which clamp the workpiece onto the pallet.

[0008] In one feasible implementation, the compressor duct welding positioning device further includes: A movable block assembly, comprising a plurality of first movable blocks, the first movable blocks being slidably connected to a tray; The limiting device is mounted on the first moving block so that the limiting device can be moved relative to the tray by the first moving block.

[0009] In one feasible implementation, the compressor duct welding positioning device further includes: The first slide rail group includes two first slide rails. The first slide rails are arranged radially on the first end face of the tray. The first slide rails extend from the side wall of the tray to the center of the tray, and the two first slide rails are located on the same radial line of the tray. The second slide rail group, the first slide rail group includes a number of second slide rails, the second slide rails are disposed on the first end face of the tray, and the second slide rails are arranged at an angle to the first slide rails; The third slide group includes at least one third slide, which is disposed through the first end face of the tray and is vertically disposed between the two first slides. The first end face is the contact surface between the pallet and the workpiece.

[0010] In one feasible implementation, the compressor duct welding positioning device further includes: The first claw assembly includes two first claws, which are slidably connected in the first groove. The second jaw assembly includes two second jaws, which are slidably connected in the third groove. The second jaws cooperate with the first jaw to limit the flange workpiece.

[0011] In one feasible implementation, a first movable block is slidably connected within the second groove; The flange workpiece is placed horizontally on the pallet, and the limiting device includes: A first screw is set perpendicular to the support plate, and the first end of the first screw is fixedly connected to the first movable block. The first threaded sleeve is fitted onto the outside of the second end of the first screw, and the first end of the first threaded sleeve is threaded into the first screw. The limiting device is threaded to the second end of the first threaded sleeve, so that the distance between the limiting device and the support plate can be adjusted by screwing the first threaded sleeve.

[0012] In one feasible implementation, the clamping assembly includes: The second screw has a first end that is embedded in the second end of the first screw sleeve, and the first end of the second screw is threadedly engaged with the second end of the first screw sleeve. The clamping block has a limit groove and is located at the second end of the second screw. By screwing the first threaded sleeve, the flange workpiece is embedded in the limit groove, so that the clamping block presses the flange workpiece onto the support plate.

[0013] In one feasible implementation, a first movable block is slidably connected in a first groove, a second groove, and a third groove. The semi-ventilation duct sheet workpiece is placed longitudinally on the pallet, with the end face of the first end of the semi-ventilation duct sheet workpiece in contact with the pallet; The limiting device includes: The first set screw is set perpendicular to the support plate. The first set screw is threadedly engaged with the first moving block. After the first set screw passes through the first moving block, the first set screw abuts against the support plate to fix the first moving block on the support plate. The clamping part is set parallel to the support plate. The clamping part is threadedly engaged with the first moving block. After the clamping part passes through the first moving block, it abuts against the outer wall of the semi-ventilation duct plate workpiece to limit the semi-ventilation duct plate workpiece.

[0014] In one feasible implementation, the moving block component further includes: The second movable block, several of which are adjustablely arranged on the tray, and the pressing device is arranged on the second movable block so that the pressing device can be moved relative to the tray by the second movable block; A second moving block is slidably connected within the third groove; The clamping device includes: The third screw is set perpendicular to the support plate. The first end of the third screw is connected to the second moving block, and the second end of the third screw extends out of the second end of the half-ventilation duct plate workpiece. The pressure block has an elongated hole, through which the third screw passes. The nut is fitted onto the outside of the second end of the third screw. The nut is threaded into the third screw and is located on the side of the pressure block away from the semi-ventilation duct plate workpiece. The pressure block is pressed onto the end face of the second end of the semi-ventilation duct plate workpiece by tightening the nut.

[0015] In one feasible implementation, a first movable block is slidably connected within the third groove; The air duct workpiece is placed horizontally on the pallet, and the limiting device includes: The pressure plate is set parallel to the support plate and is connected to the first moving block; The clamping device includes: The adjusting screw is set perpendicular to the support plate, passes through the pressure plate, and is threadedly engaged with the pressure plate. A clamping plate is arranged parallel between the pressure plate and the support plate. The clamping plate is connected to the adjusting screw so that the clamping plate can be pressed and fixed on the inner wall of the air duct workpiece by turning the adjusting screw.

[0016] According to a second aspect of the embodiments of this application, a method for welding and positioning a compressor duct is provided, applicable to a compressor duct welding and positioning device as described in any of the above technical solutions, comprising: Select the placement posture of the workpiece on the pallet according to the welding type; Adjust the position of the limiting device on the pallet to limit the workpiece; Adjust the clamping device to press the workpiece onto the pallet; After clamping, the workpiece is automatically welded.

[0017] The compressor air duct welding positioning device and method disclosed in this application have the following advantages compared with the prior art: The compressor duct welding positioning device provided in this application embodiment is equipped with a support plate, an adjustable limiting device, and a clamping device arranged parallel to the support plate. The universal limiting device and clamping device work together to complete the clamping and positioning of the duct for welding on an automatic welding machine. The limiting device moves to limit the workpiece, and the clamping device presses the workpiece onto the support plate after it is limited. This adapts to different workpiece sizes, placement methods, and placement angles, quickly and stably positioning and pressing the workpiece onto the support plate, and accurately positioning the workpiece. This avoids the problems of unstable clamping and easy deviation caused by the smooth curved surface of the duct workpiece and lack of force points in traditional clamping methods, providing a reliable clamping foundation for subsequent automated welding, thereby helping to improve the stability and consistency of the welding process. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of the compressor duct welding positioning device according to the first embodiment of this application at a first angle; Figure 2 A schematic structural diagram of the compressor duct welding positioning device according to the second embodiment of this application, showing the first angle. Figure 3 A schematic structural diagram of the first angle of the compressor air duct welding positioning device according to the third embodiment of this application; Figure 4 A schematic structural diagram of the compressor air duct welding positioning device according to the fourth embodiment of this application, showing the first angle. Figure 5 A schematic structural diagram of the slide groove of a compressor air duct welding positioning device according to an embodiment of this application; Figure 6 A schematic structural diagram of the compressor duct welding positioning device according to the first embodiment of this application from a second angle; Figure 7A schematic structural diagram of the second angle of the compressor duct welding positioning device according to the second embodiment of this application; Figure 8 A schematic structural diagram of the compressor duct welding positioning device according to the fourth embodiment of this application from a second angle; Figure 9 A schematic flowchart illustrating the steps of a compressor duct welding and positioning method according to an embodiment of this application; in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows: 11. Pallet; 12. Limiting device; 13. Clamping device; 14. Moving block assembly; 15. First slide rail; 16. Second slide rail; 17. Third slide rail; 18. First claw; 19. Second claw; 20. Flange workpiece; 21. Half-air duct plate workpiece; 22. Air duct workpiece; 121. First screw; 122. First threaded sleeve; 123. First set screw; 124. Tightening part; 125. Pressure plate; 131. Second screw; 132. Clamping block; 133. Third screw; 134. Clamping block; 135. Nut; 136. Adjusting screw; 137. Clamping plate; 141. First moving block; 142. Second moving block. Detailed Implementation

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0023] like Figures 1 to 4 As shown, according to a first aspect of the embodiments of this application, a compressor duct welding positioning device is proposed, comprising: a pallet 11, a limiting component, and a pressing component; a workpiece is placed on the pallet 11; the limiting component includes a plurality of limiting devices 12, which are adjustablely disposed on the pallet 11 to limit the workpiece; the pressing component includes a plurality of pressing devices 13, which are arranged parallel to the pallet 11 and press the workpiece onto the pallet 11.

[0024] The compressor duct welding positioning device provided in this embodiment includes a support plate 11, an adjustable limiting device 12, and a clamping device 13 arranged parallel to the support plate 11. The universal limiting device 12 and the clamping device 13 work together to complete the clamping and positioning of the duct for welding on an automatic welding machine. The limiting device 12 moves to limit the workpiece, and the clamping device 13 presses the workpiece onto the support plate 11 after it is limited. This adapts to different sizes, placement methods, and placement angles of the workpiece, allowing for quick and stable positioning and clamping of the workpiece onto the support plate 11. It also provides precise positioning of the workpiece, avoiding the problems of unstable clamping and easy deviation caused by the smooth curved surface of the duct workpiece 22 and the lack of a point of force in traditional clamping methods. This provides a reliable clamping foundation for subsequent automated welding, thereby helping to improve the stability and consistency of the welding process.

[0025] In some examples, when longitudinal weld seam welding is required, the workpiece is two and a half duct plates, and the two and a half duct plates are longitudinally clamped on the support plate 11; when circumferential weld seam welding is required, the workpiece is a flange, and the flange is horizontally clamped on the support plate 11; when large-size duct welding is required, the workpiece is a duct, and the duct is horizontally clamped on the support plate 11.

[0026] Furthermore, the shape and quantity of the limiting device 12 and the clamping device 13 can be flexibly changed and adjusted according to workpieces of different sizes and shapes, and can also be flexibly changed and adjusted according to the welding requirements of the weld seam, so as to adapt to the wind ducts of different diameters and heights, realize the modularization of the positioning device, and make the positioning device highly versatile and easy to use, so as to clamp the wind duct workpiece 22 on the automatic welding machine worktable in two different ways, horizontal clamping or vertical clamping; reduce the number of tooling parts for the positioning device, reduce the manufacturing cost and management difficulty of the positioning device; at the same time, only a few key tooling parts need to be replaced to meet the welding requirements of wind ducts of different sizes, improve production efficiency, and directly reduce the production cost of wind ducts.

[0027] In some examples, the tray 11 is mounted on the automated welding workbench. The tray 11 is a fundamental component of the device, used to support the workpiece. The shape and size of the tray 11 are designed based on statistical data of the existing duct's outline and dimensions to ensure the workpiece can be stably placed on it. The surface of the tray 11 is coated with an anti-stick coating to prevent welding slag, weld beads, and other impurities from adhering to its surface. The surface of the tray 11 is engraved with anti-slip knurling to increase friction between the tray 11 and the workpiece, preventing displacement of the workpiece during welding.

[0028] like Figures 1 to 4 As shown, in one feasible embodiment, the compressor duct welding positioning device further includes: a moving block assembly 14; the moving block assembly 14 includes a plurality of first moving blocks 141, the first moving blocks 141 being slidably connected to the support plate 11; a limiting device 12 is disposed on the first moving blocks 141, so as to drive the limiting device 12 to move relative to the support plate 11 through the first moving blocks 141.

[0029] In this technical solution, a first moving block 141 is added and slidably connected to the pallet 11, and a limiting device 12 is set on the first moving block 141, so as to make quick and flexible adjustment of the position of the limiting device 12 in the plane of the pallet 11, enhance the adaptability of the positioning device to workpieces of different sizes and shapes, simplify the adjustment process, improve the clamping efficiency of workpieces on the pallet 11, and facilitate the rapid changeover and multi-type production of duct welding.

[0030] like Figure 5As shown, in one feasible embodiment, the compressor duct welding positioning device further includes: a first slide rail group, a second slide rail group, and a third slide rail group; the first slide rail group includes two first slide rails 15, which are radially disposed on the first end face of the support plate 11, extending from the side wall of the support plate 11 towards the center of the support plate 11, and the two first slide rails 15 are located on the same radial line of the support plate 11; the first slide rail group includes a plurality of second slide rails 16, which are disposed on the first end face of the support plate 11, and are arranged at an angle to the first slide rails 15; the third slide rail group includes at least one third slide rail 17, which is disposed through the first end face of the support plate 11, and is vertically disposed between the two first slide rails 15; wherein, the first end face is the contact surface between the support plate 11 and the workpiece.

[0031] In this technical solution, by setting a first radially extending slide 15, a second slide 16 arranged at an angle, and a third slide 17 that penetrates radially on the pallet 11, a multi-directional and multi-functional slide system is formed. This system guides various functional components such as moving blocks, clamping devices, and chucks and provides reasonable movement paths and installation foundations, enabling the positioning device to systematically achieve radial, circumferential, and specific angle positioning and clamping of workpieces, thereby enhancing the versatility and flexibility of the positioning device clamping.

[0032] like Figure 1 As shown, in one feasible embodiment, the compressor duct welding positioning device further includes: a first jaw group and a second jaw group; the first jaw group includes two first jaws 18, which are slidably connected in the first slide groove 15; the second jaw group includes two second jaws 19, which are slidably connected in the third slide groove 17, and the second jaws 19 cooperate with the first jaws 18 to limit the flange workpiece 20 of the workpiece.

[0033] This technical solution provides a clamping method for welding the circumferential weld of the air duct. The first jaw 18 moves within the first slide groove 15, and the second jaw 19 moves within the third slide groove 17. The first jaw 18 and the second jaw 19 work together to tighten and limit the side wall of the workpiece, ensuring the stability of the flange workpiece 20 during the welding process. This method is suitable for circumferentially limiting the flange part of the air duct, effectively preventing the flange from shifting during the welding process and ensuring the orientation accuracy of the flange during circumferential weld welding.

[0034] Furthermore, the positions of the first jaw 18 and the second jaw 19 can be adjusted according to the size of the workpiece to ensure that the clamping force of the jaws on the workpiece is evenly distributed. The heads of the first jaw 18 and the second jaw 19 are equipped with protective caps to prevent damage such as indentations to the workpiece after clamping.

[0035] like Figure 1 and Figure 6 As shown, in one feasible embodiment, a first moving block 141 is slidably connected within the second slide groove 16; the flange workpiece 20 is horizontally placed on the pallet 11, and the limiting device 12 includes: a first screw 121 and a first threaded sleeve 122; the first screw 121 is arranged perpendicular to the pallet 11, and the first end of the first screw 121 is fixedly connected to the first moving block 141; the first threaded sleeve 122 is fitted outside the second end of the first screw 121, and the first end of the first threaded sleeve 122 is threadedly engaged with the first screw 121; the limiting device 12 is threadedly engaged with the second end of the first threaded sleeve 122, so as to adjust the distance between the limiting device 12 and the pallet 11 by screwing the first threaded sleeve 122.

[0036] In this technical solution, the cooperation method between the limiting device 12 and the flange during the welding of the circumferential weld of the wind tunnel is further given. The first claw 18 moves in the first slide groove 15, and the first moving block 141 moves in the second slide groove 16. When the flange workpiece 20 needs to be clamped parallel to the support plate 11, the first moving block 141 drives the first screw 121 to move in the third slide groove 17, thereby adjusting the horizontal distance between the clamping assembly and the flange workpiece 20. By rotating the first threaded sleeve 122, the height of the clamping device 13 relative to the support plate 11 is adjusted, thereby adjusting the longitudinal distance between the clamping device 13 and the flange workpiece 20, so that the clamping device 13 presses the flange workpiece 20 tightly onto the support plate 11 from the top surface of the flange workpiece 20. It can adapt to flange workpieces 20 of different thicknesses. Through the cooperation of multiple clamping devices 13 and limiting devices 12, flange workpieces 20 with unevenness can also be clamped and positioned, and the flange is firmly pressed on the worktable of the automatic welding machine to ensure the smooth welding of the circumferential weld and improve the quality and reliability of the circumferential weld of the wind tunnel.

[0037] like Figure 1 and Figure 6 As shown, in one feasible embodiment, the clamping assembly includes: a second screw 131 and a clamping block 132; the first end of the second screw 131 is embedded in the second end of the first threaded sleeve 122, and the first end of the second screw 131 is threadedly engaged with the second end of the first threaded sleeve 122; a limiting groove is formed on the clamping block 132, and the clamping block 132 is disposed at the second end of the second screw 131. By screwing the first threaded sleeve 122, the flange workpiece 20 is embedded in the limiting groove, so that the flange workpiece 20 is pressed onto the support plate 11 by the clamping block 132.

[0038] In this technical solution, the structure of the clamping device 13 when clamping the flange is further provided. The second screw 131 is embedded in the threaded connection with the first screw sleeve 122. When the first screw sleeve 122 is screwed, the first screw sleeve 122 rotates relative to the first screw 121 and the second screw 131, changing the engagement length between the first screw 121 and the first screw sleeve 122, changing the engagement length between the second screw 131 and the first screw sleeve 122, and thus changing the longitudinal distance between the clamping block 132 at the end of the second screw 131 and the support plate 11. The flange workpiece 20 is firmly pressed onto the support plate 11 by the clamping block 132. By setting a limiting groove on the bottom surface of the clamping block 132, the limiting groove can better accommodate and hold the edge of the flange workpiece 20, preventing the flange workpiece 20 from slipping. Meanwhile, this type of clamping device 13 optimizes the transmission path of clamping force and eliminates the protruding screw and nut 135 structure at the end of the clamping device 13, fundamentally solving the problem of positional interference between the welding torch and the clamping device 13. This ensures the continuous automatic welding of circumferential welds, improves welding efficiency, achieves one-time welding, eliminates the need for manual repair of some welds, reduces the risk of welding defects, improves welding quality, extends product service life, and enhances product safety.

[0039] like Figure 2 , Figure 3 and Figure 7 As shown, in one feasible embodiment, a first moving block 141 is slidably connected in a first groove 15, a second groove 16, and a third groove 17; a semi-ventilation duct plate workpiece 21 is placed longitudinally on a support plate 11, with the end face of the first end of the semi-ventilation duct plate workpiece 21 abutting against the support plate 11; the limiting device 12 includes a first set screw 123 and a tightening part 124; the first set screw 123 is arranged perpendicular to the support plate 11, the first set screw 123 is arranged perpendicular to the support plate 11, the second set screw 123 is arranged perpendicular to the support plate 11, the third ... A set screw 123 is threadedly engaged with a first moving block 141. After passing through the first moving block 141, the set screw 123 abuts against the support plate 11 to fix the first moving block 141 on the support plate 11. A tightening part 124 is arranged parallel to the support plate 11. The tightening part 124 is threadedly engaged with the first moving block 141. After passing through the first moving block 141, the tightening part 124 abuts against the outer wall of the semi-ventilation duct plate workpiece 21 to limit the position of the semi-ventilation duct plate workpiece 21.

[0040] This technical solution provides a method for cooperating the limiting device 12 with the half-duct plate during longitudinal weld welding of the duct. When two half-duct plates need to be clamped perpendicular to the support plate 11, the first moving block 141 drives the corresponding tightening part 124 to move within the first slide groove 15, the second slide groove 16, and the third slide groove 17, so that the tightening part 124 approaches and fits against the side wall of the half-duct plate workpiece 21. Then, by turning the first set screw 123, the position of the first moving block 141 is fixed; by rotating the tightening part 124, the tightening part 124 is tightened. The pressure plate 124 presses against the outer wall of the half-duct plate workpiece 21, thereby fixing the two half-duct plate workpieces 21 on the support plate 11. It effectively limits the horizontal movement of the half-duct plate workpieces 21, aligning the two half-duct plate workpieces 21 and preventing them from shifting due to horizontal displacement during welding. The pressing part 124 limits the half-duct plate workpieces 21 from multiple angles, providing lateral stable support for curved surface workpieces such as cones, and realizing precise positioning and stable clamping of the workpiece on the worktable of the automatic welding machine.

[0041] like Figure 2 , Figure 3 and Figure 7 As shown, in one feasible embodiment, the movable block assembly 14 further includes: a second movable block 142; a plurality of second movable blocks 142 are adjustablely disposed on the support plate 11, and a clamping device 13 is disposed on the second movable blocks 142 to drive the clamping device 13 to move relative to the support plate 11 via the second movable blocks 142; the second movable blocks 142 are slidably connected in the third slide groove 17; the clamping device 13 includes: a third screw 133, a pressure block 134, and a nut 135; the third screw 133 is disposed perpendicular to the support plate 11, and the third screw... The first end of the third screw 133 is connected to the second moving block 142, and the second end of the third screw 133 extends out of the second end of the half-ventilation duct plate workpiece 21. The pressure block 134 is provided with an elongated hole, through which the third screw 133 passes. The nut 135 is fitted on the outside of the second end of the third screw 133, and the nut 135 is threadedly engaged with the third screw 133. The nut 135 is located on the side of the pressure block 134 away from the half-ventilation duct plate workpiece 21, so that the pressure block 134 can be pressed onto the end face of the second end of the half-ventilation duct plate workpiece 21 by tightening the nut 135.

[0042] In this technical solution, during the longitudinal weld of the wind duct, the clamping assembly clamps the end faces of the two longitudinally placed half-wind duct plates. The second moving block 142 drives the clamping device 13 to move along the third slide groove 17. By tightening the nut 135, the pressure block 134 is pushed. The radial position of the pressure block 134 and the third screw 133 is adjusted through the elongated hole so that the pressure block 134 can simultaneously press on the end faces of the two butted half-wind duct plate workpieces 21. With the lateral limiting of the limiting device 12, the two aligned half-wind duct plate workpieces 21 are pressed onto the support plate 11. By constraining multiple degrees of freedom during longitudinal clamping, the support plate 11 holding the half-wind duct plate workpieces 21 can be positioned at a specific angle on the worktable of the automatic welding machine, improving the accuracy and convenience of the butt welding operation of the two half-wind duct plate workpieces 21. Thus, the automatic welding machine can be used to quickly and automatically weld the longitudinal weld of the wind duct, improving welding efficiency.

[0043] like Figure 4 and Figure 8 As shown, in one feasible embodiment, a first moving block 141 is slidably connected within the third chute 17; the air duct workpiece 22 is placed laterally on the support plate 11, and the limiting device 12 includes: a pressure plate 125; the pressure plate 125 is arranged parallel to the support plate 11 and is connected to the first moving block 141; the pressing device 13 includes: an adjusting screw 136 and a pressing plate 37; the adjusting screw 136 is arranged perpendicular to the support plate 11, passes through the pressure plate 125, and is threadedly engaged with the pressure plate 125; the pressing plate 37 is arranged parallel between the pressure plate 125 and the support plate 11, and is connected to the adjusting screw 136, so that the pressing plate 37 is pressed onto the inner wall of the air duct workpiece 22 by turning the adjusting screw 136.

[0044] In this technical solution, a welding positioning and clamping scheme for horizontally placed air ducts is designed for air ducts that are too tall and have a large diameter at the air outlet. Through the combination of pressure plate 125, adjusting screw 136 and clamping plate 37, the air duct workpiece 22 is pressed onto the support plate 11 from inside the air duct. This provides uniform support force for the large-diameter air duct workpiece 22, which is difficult to clamp externally, and prevents the air duct workpiece 22 from deforming. This solves the problem that large-sized air duct workpieces 22 cannot be installed on the automatic welding machine workbench. At the same time, there is no need to invest heavily in the production of new tooling parts, saving tooling production costs and improving the adaptability and practicality of the positioning device.

[0045] like Figure 9 As shown, according to a second aspect of this application, a method for positioning the welding of a compressor duct is proposed, applicable to the compressor duct welding positioning device of any of the above-mentioned technical solutions, comprising: Step 100: Select the placement posture of the workpiece on the pallet according to the welding type; Step 200: Adjust the position of the limiting device on the pallet to limit the workpiece; Step 300: Adjust the clamping device to press the workpiece onto the pallet; Step 400: After clamping, the workpiece is automatically welded.

[0046] The compressor duct welding positioning method provided in this application combines a modular clamping device with a specific welding process to form an efficient and reliable clamping operation flow. The clamping and positioning of the duct on the automatic welding machine is completed by a universal limiting device and a clamping device. The limiting device moves to limit the workpiece, and the clamping device presses the workpiece onto the pallet after it is limited. This adapts to different workpiece sizes, placement methods, and placement angles, quickly and stably positioning and pressing the workpiece onto the pallet, and accurately positioning the workpiece. This avoids the problems of unstable clamping and easy displacement caused by the smooth curved surface of the duct workpiece and the lack of a point of force in traditional clamping methods. It can handle clamping tasks of different weld types and different sizes of workpieces, thereby improving the level of welding automation, process consistency, and production efficiency, and reducing the dependence on operator experience.

[0047] The compressor duct welding and positioning method provided in this application embodiment is applied to the compressor duct welding and positioning device of any of the above technical solutions. Therefore, the compressor duct welding and positioning method has all the beneficial effects of the compressor duct welding and positioning device of the above technical solutions, which will not be elaborated here.

[0048] It will be readily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A compressor air duct welding positioning device, characterized in that, The compressor air duct welding positioning device includes: The workpiece is placed on the pallet; A limiting assembly, comprising a plurality of limiting devices, wherein the limiting devices are adjustablely disposed on the pallet to limit the workpiece; A clamping assembly, comprising a plurality of clamping devices arranged parallel to the pallet, wherein the clamping devices press the workpiece onto the pallet.

2. The compressor air duct welding positioning device according to claim 1, characterized in that, The compressor air duct welding positioning device also includes: A movable block assembly, the movable block assembly comprising a plurality of first movable blocks, the first movable blocks being slidably connected to the tray; The limiting device is mounted on the first moving block so that the limiting device can be moved relative to the tray by the first moving block.

3. The compressor air duct welding positioning device according to claim 2, characterized in that, The compressor air duct welding positioning device also includes: The first slide group includes two first slides, which are arranged radially on the first end face of the tray. The first slides extend from the side wall of the tray towards the center of the tray, and the two first slides are located on the same radial line of the tray. The second slide rail group, the first slide rail group includes a plurality of second slide rails, the second slide rails are disposed on the first end face of the pallet, and the second slide rails are arranged at an angle to the first slide rails; The third slide group includes at least one third slide, which is disposed through the first end face of the tray and is vertically disposed between the two first slides. The first end face is the contact surface between the pallet and the workpiece.

4. The compressor duct welding positioning device according to claim 3, characterized in that, The compressor air duct welding positioning device also includes: The first claw group includes two first claws, which are slidably connected within the first groove; The second jaw assembly includes two second jaws, which are slidably connected within the third groove. The second jaws cooperate with the first jaws to limit the movement of the flange workpiece.

5. A compressor duct welding positioning device according to claim 4, characterized in that, The first moving block is slidably connected within the second groove; The flange workpiece is placed horizontally on the pallet, and the limiting device includes: A first screw is arranged perpendicular to the support plate, and the first end of the first screw is fixedly connected to the first movable block. The first threaded sleeve is fitted onto the outside of the second end of the first screw, and the first end of the first threaded sleeve is threaded into the first screw. The limiting device is threadedly engaged with the second end of the first threaded sleeve to adjust the distance between the limiting device and the support plate by screwing the first threaded sleeve.

6. A compressor duct welding positioning device according to claim 5, characterized in that, The clamping assembly includes: The second screw has a first end embedded in the second end of the first screw sleeve, and the first end of the second screw is threadedly engaged with the second end of the first screw sleeve. A clamping block is provided, which has a limiting groove. The clamping block is located at the second end of the second screw. By screwing the first threaded sleeve, the flange workpiece is embedded in the limiting groove, so that the clamping block presses the flange workpiece onto the support plate.

7. A compressor duct welding positioning device according to claim 3, characterized in that, The first moving block is slidably connected in the first groove, the first moving block is slidably connected in the second groove, and the first moving block is slidably connected in the third groove; The semi-ventilation duct sheet workpiece is placed longitudinally on the pallet, with the end face of the first end of the semi-ventilation duct sheet workpiece in contact with the pallet; The limiting device includes: A first set screw is provided perpendicular to the support plate. The first set screw is threadedly engaged with the first movable block. After the first set screw passes through the first movable block, the first set screw abuts against the support plate to fix the first movable block on the support plate. The clamping part is arranged parallel to the support plate. The clamping part is threadedly engaged with the first moving block. After passing through the first moving block, the clamping part abuts against the outer wall of the semi-ventilation duct plate workpiece to limit the position of the semi-ventilation duct plate workpiece.

8. A compressor duct welding positioning device according to claim 7, characterized in that, The moving block assembly also includes: A second movable block, a plurality of second movable blocks are adjustablely disposed on the tray, and the pressing device is disposed on the second movable block so as to drive the pressing device to move relative to the tray through the second movable block; The second moving block is slidably connected within the third groove; The clamping device includes: The third screw is arranged perpendicular to the support plate. The first end of the third screw is connected to the second moving block, and the second end of the third screw extends beyond the second end of the semi-ventilation duct plate workpiece. A pressure block, wherein an elongated hole is provided on the pressure block, and the third screw passes through the elongated hole; A nut is fitted onto the outside of the second end of the third screw. The nut is threaded into the third screw and is located on the side of the pressure block away from the semi-ventilation duct plate workpiece. The pressure block is pressed onto the end face of the second end of the semi-ventilation duct plate workpiece by screwing the nut.

9. A compressor duct welding positioning device according to claim 3, characterized in that, The first moving block is slidably connected within the third groove; The air duct workpiece is placed horizontally on the pallet, and the limiting device includes: A pressure plate, which is arranged parallel to the support plate and is connected to the first movable block; The clamping device includes: An adjusting screw is provided, which is perpendicular to the support plate and passes through the pressure plate. The adjusting screw is threadedly engaged with the pressure plate. A pressure plate is arranged parallel between the pressure plate and the support plate. The pressure plate is connected to the adjusting screw so that the pressure plate can be pressed against the inner wall of the air duct workpiece by turning the adjusting screw.

10. A method for welding and positioning a compressor air duct, characterized in that, The compressor duct welding positioning device as described in any one of claims 1 to 9 comprises: Select the placement posture of the workpiece on the pallet according to the welding type; Adjust the position of the limiting device on the pallet, and limit the workpiece by means of the limiting device; Adjust the clamping device to press the workpiece onto the pallet; After clamping, the workpiece is automatically welded.

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