Method and apparatus for assembly welding of a wind tunnel honeycomb module

Abstract

The application discloses a kind of wind tunnel honeycomb module's combination welding manufacturing method and device in the technical field of wind tunnel honeycomb module production, including welding platform, the platform support of welding platform lower end, mobile adjusting mechanism can be moved along preset direction, fixed limiting mechanism cannot be moved, and the honeycomb tube array positioning mechanism for positioning honeycomb sheet, auxiliary control mechanism are included.The application forms reference plane by using combination welding platform work block, then positions honeycomb tube by high-precision bottom component and upper component, establishes unified manufacturing reference, ensures that each honeycomb tube from first layer to last layer is positioned according to same reference, fundamentally eliminates error accumulation phenomenon caused by repeated positioning or manual operation deviation, to manufacture size height consistent, shape tolerance extremely small, quality stable and reliable high-precision honeycomb module.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel cellular module manufacturing technology, and in particular to a method and apparatus for the combined welding manufacturing of wind tunnel cellular modules. Background Technology

[0002] A honeycomb array (usually composed of a large number of honeycomb modules with high dimensional accuracy and consistent honeycomb tube orientation) is a very important flow straightening device in a wind tunnel. Its main function is to correct the direction of airflow and break up large-scale vortices, thereby reducing the turbulence of the airflow and making its flow direction parallel to the wind tunnel axis. This provides a flow field with consistent direction and uniform velocity for the test section, improving the accuracy and reliability of the test. The honeycomb module is a welded structural component with an internal honeycomb tube array and an external rectangular frame composed of thin plates.

[0003] The honeycomb module of a wind tunnel project has a rectangular outer frame welded from thin plates of a certain thickness, with a required dimensional deviation of <±0.5mm and a verticality and parallelism of <0.7mm. The internal honeycomb tube is formed by stacking and spot welding multiple layers of pre-formed honeycomb sheets of fixed thickness. The honeycomb sheets are connected to each other and to the outer frame by spot welding, and the angle of attack and yaw angle between the honeycomb tube axis and the outer frame are required to be <0.1°. However, existing technologies primarily manufacture honeycomb modules by welding prefabricated square tubes together. This method has several drawbacks: low manufacturing precision, poor dimensional consistency in mass-produced honeycomb modules, large angle deviations in honeycomb tubes, difficulty in guaranteeing welding quality, and susceptibility to deformation and incomplete welds. Furthermore, if thin plates are stamped into honeycomb sheets and then manually stacked and welded, unavoidable relative positional deviations between the sheets will inevitably occur. These deviations accumulate geometrically with the increase in the number of layers, leading to out-of-tolerance angles in the honeycomb tubes and even scrapping them – a requirement unacceptable in wind tunnel honeycomb module design and manufacturing. Therefore, we propose a combined welding manufacturing method and apparatus for wind tunnel honeycomb modules. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method and apparatus for the combined welding manufacturing of wind tunnel cellular modules.

[0005] The objective of this invention is achieved as follows: a method for the combined welding manufacturing of wind tunnel cellular modules, comprising the following steps: S1. Level the welding table and clean the welding work surface; S2, the U-shaped outer frame of the cellular module is set based on the fixed limit component, and the horizontal and vertical directions are constrained by the moving adjustment mechanism; S3, the bottom honeycomb sheet is positioned using the bottom honeycomb tube positioning component and spot-welded to the bottom plate of the U-shaped outer frame; S4, combine the positioning plates on both sides, and stack and weld the upper honeycomb sheets based on the bottom honeycomb sheet; S5, weld the top plate of the honeycomb module and then cool and demold it.

[0006] Furthermore, the specific process of step S2 is as follows: Align the U-shaped outer frame with the reference line of the work block on the welding table, and check the gap between the bottom plate of the U-shaped outer frame and the work block 11; Rotate the lead screw transmission assembly to drive the moving adjustment assembly to clamp the U-shaped outer frame; Measure whether the distances between the bottom and top sides of the U-shaped outer frame are consistent; The gap between the movable adjustment mechanism and the height pad of the welding table is detected and adjusted by bolts.

[0007] Furthermore, the specific process of step S3 is as follows: Lay positioning strips along both sides of the working block of the welding table, and place the triangular positioning rods into the positioning grooves of the positioning strips on both sides in sequence; The bottom layer of honeycomb sheets is laid along the triangular positioning rod. After being pressed and shaped using a single-layer honeycomb sheet pressure plate, spot welding is performed using a handheld laser welder for positioning. Remove the single-layer honeycomb sheet pressure plate, call the odd-numbered layer welding program, and use a laser automatic spot welding device to weld the bottom honeycomb sheet to the outer frame bottom plate; The bottom layer of the honeycomb sheet is the first layer of the honeycomb sheet, which is an odd-numbered layer of honeycomb sheet. Subsequent odd-numbered layers of the honeycomb sheet are all referred to as single-layer honeycomb sheets.

[0008] Furthermore, the specific process of step S4 is as follows: The long side plate of the long side positioning plate and the short side plate of the short side positioning plate are respectively attached to the vertical plate surface of the honeycomb frame and positioned and clamped. The combined side plate clamps clamp the two side plates of the U-shaped outer frame to the contact surfaces of the fixed limiting component and the contact surfaces of the moving adjustment component; Cylindrical positioning rods are inserted sequentially between the long side positioning plate and the short side positioning plate, and a second layer of honeycomb sheets is laid. The second layer of honeycomb sheets is then placed in pairs with the bottom layer of honeycomb sheets. The second layer of honeycomb sheet is pressed by a double-layer honeycomb sheet pressing plate, so that the stacking height of the second layer of honeycomb sheet is flush with the transverse welding reference line on the long side positioning plate; After the second layer of honeycomb sheet is fixed by spot welding with a handheld laser welding device, the double-layer honeycomb sheet pressure plate is removed, the even-numbered layer welding program is switched, and the second layer of honeycomb sheet is welded to the bottom layer of honeycomb sheet using an automatic laser spot welding device. This is then used for subsequent honeycomb panel welding; The second layer of honeycomb sheet is an even-numbered layer of honeycomb sheet, and subsequent even-numbered layers of honeycomb sheet are all referred to as double-layer honeycomb sheet.

[0009] Furthermore, the subsequent honeycomb panel welding process is as follows: Insert the cylindrical positioning rods into the positioning holes of the upper layer of the second honeycomb sheet in sequence, and then lay the single layer of honeycomb sheet along the cylindrical positioning rods; The single-layer honeycomb sheet is used for pressing and shaping, and after spot welding, the single-layer honeycomb sheet is removed, the odd-numbered layer welding program is called, and the laser automatic spot welding device is used for welding. The above structure enables the end faces of the upper and lower honeycomb sheets to be aligned, and the horizontal and vertical reference lines of the welding area and the long side positioning plate to be aligned and flush.

[0010] Furthermore, the specific process of step S5 is as follows: place the top plate of the honeycomb module and check the alignment accuracy between the end face of the top plate and the two side uprights of the U-shaped outer frame. Detect the top surface gap between the lower surface of the top plate and the upper surface of the uppermost long-side positioning plate and short-side positioning plate; Set a top plate pressure plate and use intermittent welding, cross welding, and symmetrical argon arc welding process to weld the top plate of the honeycomb module; After the cellular module has completely cooled down, remove the long side positioning plates, cylindrical positioning rods, short side positioning plates, positioning strips, and triangular positioning rods in sequence. The cellular module is hoisted and detached from the assembly and welding device.

[0011] A combined welding device for wind tunnel cellular modules includes a welding table: a U-shaped outer frame for supporting and positioning the cellular modules; The welding platform is provided with a working block for installing and positioning the bottom honeycomb chip positioning component, and the welding platform is provided with a height pad. Fixed limiting component: Fixedly installed on the welding table, used to tightly fit the upright plate of the U-shaped outer frame from one side, forming a rigid constraint on the U-shaped outer frame in the first direction; The movable adjustment component is installed on the welding table and is connected to the welding table by a screw drive component. It can move on the welding table in a preset direction to tightly fit the upright plate of the U-shaped outer frame from one side, forming a rigid constraint in a second direction opposite to the fixed limit component. Cellular array control components: used to control the angle of attack and yaw angle deviations between the cellular panels and the U-shaped outer frame, as well as between the cellular panels; Auxiliary control mechanism: used to apply pressure and constrain the honeycomb sheets during the welding process, including single-layer honeycomb sheet pressure plate and double-layer honeycomb sheet pressure plate for pressing the honeycomb sheets, and top plate pressure plate and side plate pressure plate for preventing welding deformation.

[0012] Furthermore, the cellular array control component includes a bottom cellular chip positioning component and an upper cellular chip positioning component; The bottom honeycomb chip positioning component includes a positioning strip, which is installed on the side of the working block and has multiple sets of evenly distributed positioning grooves. Triangular positioning rods, installed on positioning strips, are used to support and position the bottom honeycomb sheets, and are set to correspond to the contours of the honeycomb sheets.

[0013] Furthermore, the upper honeycomb chip positioning assembly includes a long side positioning plate and a short side positioning plate, as well as corresponding long side side plates and short side side plates. Cylindrical positioning rods are inserted between the long-side positioning plate and the short-side positioning plate to support and limit the stacked honeycomb sheets.

[0014] Compared with the prior art, the beneficial effects of the present invention are that by using the working block on the welding table to form a reference plane, and then using high-precision bottom and top components to position the honeycomb tubes, a unified manufacturing reference is established. This ensures that every honeycomb tube from the first layer to the last layer is positioned according to the same reference, fundamentally eliminating the error accumulation caused by repeated positioning or manual operation deviations in traditional processes. This results in the manufacture of high-precision honeycomb modules with consistent dimensions, small shape and position deviations, and stable and reliable quality. It effectively solves defects such as poor edge quality of honeycomb modules, tilting and misalignment of honeycomb tubes, and enables the mass production of high-precision honeycomb modules.

[0015] Through modular positioning components and a standardized benchmark platform, it can be quickly and flexibly recombined and adjusted according to different cellular module specifications. Operators only need to replace or adjust some modular components to quickly adapt to new products without changing the main equipment structure, which greatly shortens the R&D and production preparation cycle of new products and reduces the unit production cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the combined welding manufacturing method for a wind tunnel honeycomb module provided by the present invention; Figure 2 This is a schematic diagram of the overall structure of a combined welding device for wind tunnel honeycomb modules provided by the present invention; Figure 3 This is a schematic diagram of the welding station structure provided by the present invention; Figure 4 This is a schematic diagram of the fixed limiting component structure provided by the present invention; Figure 5 This is a schematic diagram of the movable adjustment component structure provided by the present invention; Figure 6 This is a schematic diagram of the U-shaped outer frame structure of the cellular module provided by the present invention; Figure 7 This is a schematic diagram of the working state structure of the underlying honeycomb chip positioning component provided by the present invention; Figure 8 This is a schematic diagram of the overall structure of the bottom-layer honeycomb chip positioning component provided by the present invention; Figure 9 This is a schematic diagram of the positioning strip structure provided by the present invention; Figure 10 This is a schematic diagram of the triangular positioning rod structure provided by the present invention; Figure 11 This is a schematic diagram of the working state structure of the upper honeycomb chip positioning component provided by the present invention; Figure 12 This is a schematic diagram of the overall structure of the upper honeycomb chip positioning component provided by the present invention; Figure 13 This is a schematic diagram of the long-side positioning plate structure provided by the present invention; Figure 14 This is a schematic diagram of the short-side positioning plate structure provided by the present invention; Figure 15 This is a schematic diagram of the working state structure of the long-side positioning plate provided by the present invention; Figure 16 This is a schematic diagram of the working structure of the single-layer honeycomb sheet pressure plate provided by the present invention; Figure 17 This is a schematic diagram of the top plate pressure plate structure provided by the present invention; Figure 18 This is a schematic diagram of the single-layer honeycomb sheet pressure plate provided by the present invention; Figure 19 This is a schematic diagram of the double-layer honeycomb sheet pressure plate provided by the present invention.

[0018] In the diagram: 1. Welding table; 11. Working block; 12. Height pad; 13. Platform support; 14. Support feet; 15. Screw drive assembly; 2. U-shaped outer frame; 3. Fixed limit assembly; 4. Moving adjustment assembly; 41. Moving base plate; 42. Moving upright plate; 43. Moving column; 44. Adhesive plate; 5. Bottom layer honeycomb panel positioning assembly; 51. Positioning strip; 52. Triangular positioning rod; 6. Upper layer honeycomb panel positioning assembly; 61. Long side positioning plate; 62. Long side plate; 63. Long side plate; 64. Short side positioning plate; 65. Short side plate; 66. Short side plate; 7. Single layer honeycomb panel pressure plate; 71. Double layer honeycomb panel pressure plate; 72. Top plate pressure plate; 73. Side plate pressure plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 19 The method for assembling and welding a wind tunnel cellular module, as shown, includes the following steps: S1. Level the welding table and clean the welding work surface. The specific workflow is as follows: Place the level on the working block of the welding table, and level the welding table by rotating the bolts on the support feet. Ensure that the levelness of the worktable surface meets the welding accuracy requirements, and especially ensure that the extension direction of the welding table is strictly parallel to the preset gantry welding movement direction. After leveling, thoroughly clean the worktable surface to ensure that there is no debris. S2, the U-shaped outer frame of the cellular module is set based on the fixed limit component, and the horizontal and vertical directions are constrained by the moving adjustment mechanism; The specific process of step S2 is as follows: Align the U-shaped outer frame with the reference line of the work block on the welding table, and check the gap between the bottom plate of the U-shaped outer frame and the work block; Rotate the lead screw transmission assembly to drive the moving adjustment assembly to clamp the U-shaped outer frame; Measure whether the distances between the bottom and top sides of the U-shaped outer frame are consistent; The gap between the movable adjustment mechanism and the height pad of the welding table is detected and adjusted using bolts. It should be noted that the gap between the U-shaped outer frame base plate and the working block is less than 0.2mm, and the distance between the bottom and top of both sides of the U-shaped outer frame has a tolerance of ±0.5mm. S3, bottom layer honeycomb panel welding: the bottom layer honeycomb panel is positioned using the bottom layer honeycomb tube positioning component and spot-welded to the bottom plate of the U-shaped outer frame; The specific process of step S3 is as follows: Lay positioning strips along both sides of the working block of the welding table, and place the triangular positioning rods into the positioning grooves of the positioning strips 51 on both sides in sequence; The bottom layer of honeycomb sheets is laid along the triangular positioning rod. After being pressed and shaped using a single-layer honeycomb sheet pressure plate, spot welding is performed using a handheld laser welding positioner. Remove the single-layer honeycomb sheet pressure plate, call the odd-numbered layer welding program, and use a laser automatic spot welding device to weld the bottom honeycomb sheet to the outer frame bottom plate; The bottom honeycomb sheet is the first honeycomb sheet, which is an odd-numbered honeycomb sheet. Subsequent odd-numbered honeycomb sheets are all referred to as single-layer honeycomb sheets. It should be noted that during welding, the diameter of the weld points on the bottom honeycomb sheet should be 0.5 to 1.5 mm, the welding interval should be 10 mm, and the weld points should not be incomplete or misaligned. S4, combine the positioning plates on both sides, and stack and weld the upper honeycomb sheets based on the bottom honeycomb sheet; The specific process of step S4 is as follows: The long side plate of the long side positioning plate and the short side plate of the short side positioning plate are respectively attached to the vertical plate surface of the honeycomb frame and positioned and clamped. The combined side plate clamps clamp the two side plates of the U-shaped outer frame to the contact surfaces of the fixed limiting component and the contact surfaces of the moving adjustment component; Cylindrical positioning rods are inserted sequentially between the long side positioning plate and the short side positioning plate, and a second layer of honeycomb sheets is laid. The second layer of honeycomb sheets is then placed in pairs with the bottom layer of honeycomb sheets. The second layer of honeycomb sheet is pressed using a double-layer honeycomb sheet pressing plate. The superposition height of the second layer of honeycomb sheet is observed to be flush with the horizontal welding reference line on the long side positioning plate, and then adjusted to be consistent. After the second layer of honeycomb sheet is fixed by spot welding with a handheld laser welding device, the double-layer honeycomb sheet pressure plate is removed, the even-numbered layer welding program is switched, and the single-layer honeycomb sheet and the second layer honeycomb sheet are welded together using an automatic laser spot welding device. This is then used for subsequent honeycomb panel welding; The second layer of honeycomb sheet is an even-numbered honeycomb sheet, and subsequent even-numbered honeycomb sheets are all referred to as double-layer honeycomb sheets. The subsequent honeycomb panel welding process is as follows: Insert the cylindrical positioning rods into the positioning holes of the upper layer of the second honeycomb sheet in sequence, and then lay the single layer of honeycomb sheet along the cylindrical positioning rods; The single-layer honeycomb sheet is used for pressing and shaping, and after spot welding, the single-layer honeycomb sheet is removed, the odd-numbered layer welding program is called, and the laser automatic spot welding device is used for welding. Observe the end face alignment accuracy of the upper and lower honeycomb sheets layer by layer, and check whether there is any misalignment of the horizontal and vertical reference lines of the welding area and the long side positioning plate; If misalignment occurs, and the misalignment value is less than 0.5mm, try to fine-tune it using special tools (such as rubber hammers or levers) without damaging the weld joints and honeycomb structure, so that it is back in alignment before continuing to complete the welding. If the misalignment value is greater than 0.5mm, it is assessed as a serious misalignment. Production of the module should be stopped immediately, the module with the misalignment should be isolated as a defective product, and the misalignment location and layer number should be clearly marked. The positioning system and clamping condition were inspected, and the effects of thermal deformation were detected. It should be noted that if the long side positioning plates and short side positioning plates on both sides of the fixed limiting mechanism are not locked, the positional accuracy of the positioning holes on both sides cannot be guaranteed, which will result in the cellular module being scrapped due to excessive yaw angle. If the side panels of the U-shaped outer frame are not attached to the contact surface of the fixed limiting component or the contact surface of the moving adjustment component, it may cause a deviation in the verticality of the honeycomb module frame. S5, Weld the top plate of the honeycomb module and then cool and demold it; The specific process of step S5 is as follows: place the top plate of the honeycomb module and check the alignment accuracy between the end face of the top plate and the two side uprights of the U-shaped outer frame; Detect the top surface gap between the lower surface of the top plate and the upper surface of the uppermost long-side positioning plate and short-side positioning plate; Set a top plate pressure plate and use intermittent welding, cross welding, and symmetrical argon arc welding process to weld the top plate of the honeycomb module; After the cellular module has cooled to room temperature, remove the long side positioning plates, cylindrical positioning rods, short side positioning plates, positioning strips, and triangular positioning rods in sequence. The cellular module is hoisted off the welding table.

[0021] In summary, this invention utilizes a combined welding platform working block to form a reference plane, and then positions the honeycomb tubes using high-precision bottom and top components, establishing a unified manufacturing benchmark. This ensures that every honeycomb tube from the first layer to the last layer is positioned according to the same benchmark, fundamentally eliminating the error accumulation caused by repeated positioning or manual operation deviations in traditional processes. This results in the manufacture of high-precision honeycomb modules with consistent dimensions, minimal form and position tolerances, and stable and reliable quality, effectively solving defects such as poor edge quality and overall tilting and misalignment. Through modular positioning components and a standardized benchmark platform, it can be quickly and flexibly recombined and adjusted according to different cellular module specifications. Operators only need to replace or adjust some modular components to quickly adapt to new products without changing the main equipment structure. This not only greatly shortens the R&D and production preparation cycle of new products and reduces the unit production cost, but more importantly, it transforms the previous "non-standard" production that relied on experienced workers into "replicable" production that relies on standardized modules, improving production efficiency and equipment versatility. The gantry laser welding system automatically completes all laser spot welding between cellular cells according to a preset program, with good consistency in weld size, weld position and spacing. The welding quality is stable and efficient, meeting both usage requirements and suitable for large-scale mass production.

[0022] A combined welding device for wind tunnel cellular modules, used in the above-mentioned combined welding manufacturing method of wind tunnel cellular modules, includes a welding table 1 and a U-shaped outer frame 2 for supporting and positioning the cellular module; A working block 11 is provided on the welding table 1 for installing and positioning the bottom honeycomb sheet positioning component 5, and a height pad block 12 is provided on the welding table 1. Specifically, the bottom of the welding table 1 is provided with a platform support 13 and a support foot cup 14. The welding table 1 is provided with a working block 11 and a height pad 12. The height pad 12 is set perpendicular to the working block 11. The welding table 1 is provided with a limit block and a lifting ring. There are multiple lifting rings, which are evenly distributed and are located above the support foot cup 14.

[0023] Furthermore, the welding station 1 mainly includes the following parts: The platform support 13 and support feet 14 located at the bottom of the welding table 1 are used to support the welding table 1; The working block 11 located on top of the welding table 1 is used to support the cellular module product and ensure the parallelism of the cellular module base plate. The height pad 12 located at the top of the welding table 1 is used to support the fixed limiting mechanism and the moving adjustment mechanism to ensure the height dimension of the mechanism and to be perpendicular to the combined welding platform.

[0024] Furthermore, the welding table 1 is a flat plate structure, which is set on the platform support 13. Several support feet 14 are provided at the lower end of the platform support 13 for support, and the height of the support feet 14 can be adjusted to adjust the level of the welding table 1. The upper end of the welding table 1 is provided with a structure for installing various components, and the required holes are opened accordingly. In addition, the welding table 1 is also equipped with a lead screw limit seat located at the edge of the welding table 1, which is used to cooperate with the transmission components of the moving adjustment mechanism. Specifically, the platform support 13 includes a horizontal beam and a vertical beam. The horizontal beam is located at the bottom of the welding table 1 and is evenly distributed. The horizontal beam is fixed to the welding table 1 by welding. The vertical beam is set perpendicular to the horizontal beam. Triangular reinforcing ribs are provided at the connection between the horizontal beam and the vertical beam.

[0025] Furthermore, the crossbeam is used to support and form the main body of the platform support 13, and the vertical beam is set perpendicular to the crossbeam and is used to install the support feet 14. The crossbeams serve as the main support, distributed at the bottom of welding table 1, and are welded to the table surface to form a solid integrated structure, ensuring the rigidity and load-bearing capacity of the overall frame; The vertical structure with the vertical beam perpendicular to the horizontal beam not only serves to connect the horizontal beam and effectively transfer the load to the ground, but also provides an ideal and stable connection point for installing the support feet 14. This makes the entire platform support 13 more evenly and rationally stressed when bearing huge workloads. The triangular reinforcing ribs effectively disperse stress and resist deformation at the connection between the two. The overall structure can ensure load-bearing strength and rigidity, provide a reliable foundation for platform leveling, suppress equipment vibration during welding, and ensure the long-term stability and accuracy of the entire welding system. Specifically, the support foot cup 14 is set to correspond to the vertical beam, and a support pad is set between the support foot cup 14 and the vertical beam. The support foot cup 14 and the support pad are connected by threads.

[0026] Furthermore, by rotating the support foot cup 14, the thread between it and the support pad can be slightly displaced, thereby allowing for stepless high-precision adjustment of the platform height. The self-locking function of the thread enables precise positioning, ensuring that the platform reaches the ideal horizontal working state. Specifically, there are multiple working blocks 11. The working blocks 11 are connected to the welding table 1 by bolts. The edges of the working blocks 11 on both sides are provided with a recessed platform structure. The welding table 1 is provided with a lifting groove, which is located between the working blocks 11.

[0027] Furthermore, the number of working blocks 11 is blocks, with the middle working block 11 having a larger area and being used to mainly support the cellular module, while the working blocks 11 on both sides are relatively smaller and are used to support the sides of the cellular module and adjust the level of the cellular module. The working blocks 11 are connected to the welding table 1 by multiple bolts. When leveling, the horizontal height of the working blocks 11 can be adjusted by setting thin plates, etc., so as to achieve the ideal level of the cellular module. The lifting slots on both sides of the working block 11 are used for handling or installing the entire honeycomb module. The lifting equipment's slings can extend into the space formed by the lifting slots between the two working blocks 11. This allows the operator to lift the entire honeycomb module and the working block 11 that supports it at once, avoiding the imbalance, swaying and safety hazards that may be caused by lifting one or more points at a time, and improving work efficiency and safety. Specifically, a sliding groove is provided on the welding table 1, which is located on the recessed structure. A height pad 12 is provided corresponding to the sliding groove and is bolted to the sliding groove. Mounting grooves are provided on both sides of the height pad 12, and a limiting block is provided in the mounting groove.

[0028] Furthermore, the height pad 12 and the limiting blocks on both sides are installed using specific grooves. Whether it is the linear movement of the height pad 12 in the slide groove or the corresponding installation of the limiting blocks in the installation groove, it is restricted within the preset trajectory to ensure the accuracy of the installation position, effectively avoid errors that may be caused by manual operation, thereby improving the installation accuracy of the mechanism and ensuring the accuracy during welding. Fixed limiting component 3: It is fixedly installed on the welding table 1 and is used to tightly fit the upright plate of the U-shaped outer frame from one side, forming a rigid constraint on the U-shaped outer frame 2 in the first direction. The movable adjustment component 4 is installed on the welding table 1 and is provided with a screw drive component 15 between it and the welding table 1. It can move on the welding table 1 in a preset direction to tightly fit the upright plate of the U-shaped outer frame from one side, forming a rigid constraint in the second direction opposite to the fixed limit component 3. Specifically, the movable adjustment component 4 includes a movable base plate 41, which is slidably connected to the welding table 1. An L-shaped limiting plate is bolted to the movable base plate 41, and a movable horizontal plate is fixedly connected to the L-shaped limiting plate. Movable side plates are welded to both sides of the L-shaped limiting plate, and movable columns 43 are bolted to the movable side plates.

[0029] Furthermore, by bolting the L-shaped limiting plate and the core components such as the movable column 43 to the movable bracket, and by using the sliding reference of the movable base plate 41 on the welding table 1, the entire component can be moved synchronously, ensuring the uniformity of the positioning reference. Specifically, both the movable adjustment component 4 and the fixed limiting component 3 are provided with a bonding plate 44. The L-shaped limiting plate and the movable horizontal plate are combined to form a movable vertical plate 42. The bonding plate 44 and the movable vertical plate 42 are connected by bolts. The movable vertical plate 42 is arranged in a grid pattern. A boss is provided between the bonding plate 44 and the movable vertical plate 42. The bosses are distributed at the nodes of the movable vertical plate 42. Threaded holes for connection are provided on the bosses.

[0030] Furthermore, by using a grid-shaped frame layout and a multi-point distributed boss structure, the overall rigidity and uniformity of force transmission of the system are improved, overcoming the drawbacks of traditional point clamping that can easily cause workpiece deformation or local overpressure due to stress concentration. Multiple bosses are precisely distributed on the nodes of the structure to form a stable and balanced load-bearing support surface, providing extremely high structural strength for the leveling components, ensuring that they will not deform during the welding process, and can also evenly distribute the huge clamping force to multiple key support points of the workpiece through bolts, avoiding the local stress overload problem commonly found in traditional single-point or linear clamping methods. Furthermore, the verticality of each point can be adjusted by evenly distributed multi-point connections, thereby improving the clamping accuracy of the bonding plate 44 on the honeycomb module.

[0031] Furthermore, during specific adjustments, the operator can control the tightness of the bolts at the threaded holes of the bonding plate 44 and each boss, and add shims to perform micron-level perpendicularity calibration. Specifically, the movable column 43 has a square groove for connecting and installing the upper honeycomb panel positioning component 6; Specifically, the transmission assembly is located between the movable base plate 41 and the welding table 1. The transmission assembly includes a lead screw, which is rotatably connected to the welding table 1. A slider is slidably connected to the welding table 1, and the slider is fixedly connected to the movable base plate 41. Cellular array control components: used to control the angle of attack and yaw angle deviations between the cellular panels and the outer frame, as well as between the cellular panels; The cellular array control component includes a bottom cellular chip positioning component 5 and an upper cellular chip positioning component 6; The bottom honeycomb positioning component 5 includes a positioning strip 51, which is installed on the side of the working block 11 and has multiple sets of evenly distributed positioning grooves. Triangular positioning rod 52, installed on positioning strip 51, is used to support and position honeycomb sheets, and is set to correspond to the outline of the honeycomb sheets.

[0032] Furthermore, the positioning strip 51 is arranged in a trapezoidal shape, and a cylindrical positioning rod is provided on the positioning strip 51. The cylindrical positioning rod is correspondingly arranged with the bent part of the honeycomb sheet. A limiting groove is opened on the positioning strip 51, and the limiting groove is correspondingly arranged with the welding platform. The limiting grooves are symmetrically distributed on both sides of the positioning strip 51.

[0033] Furthermore, firstly, the formed cylindrical positioning rod precisely corresponds to the bent part of the honeycomb sheet, transforming the traditional scattered support into a multi-point, stable rigid constraint, fundamentally solving the problem of welding posture deviation caused by inaccurate positioning and unstable contact, and ensuring the stability of the working state of the honeycomb sheet during the welding process. Secondly, the symmetrical limiting grooves on both sides of the positioning strip 51 allow the entire bottom positioning structure to be flexibly adjusted in horizontal position on the welding platform, enabling it to quickly adapt to the installation requirements of different specifications of cellular modules and solve the problem of inconsistent assembly benchmarks caused by the inability of traditional tooling to make fine adjustments. Specifically, the positioning strip 51 is bolted to the welding platform, with the bolt passing through the limiting groove and threaded to the welding platform; It should be noted that the welding table 1 has grooves on its surface that correspond to the positioning strip 51, thereby further improving the installation accuracy of the positioning strip 51.

[0034] Furthermore, the positioning groove provides a reference surface for the positioning strip 51 to be embedded, forcibly restricting the positioning strip 51 within the preset track, fundamentally eliminating the possibility of any planar deflection or lateral movement of the positioning strip 51 in the horizontal plane. Through rigid constraint, the positioning strip 51 can be accurately and without shaking by relying on the bolt in the through groove for horizontal adjustment, ensuring that every fine adjustment is accurate. Specifically, the cylindrical positioning rod includes a connecting section and a working section. The connecting section is symmetrically distributed on both sides of the working section. The length of the cylindrical positioning rod corresponds to the honeycomb module. The number of cylindrical positioning rods is consistent with the number of bends in the honeycomb sheet. The connecting section is hexagonal. Positioning holes are opened on the positioning strip 51. The connecting section is corresponding to the positioning holes. The cylindrical positioning rod is snapped into the positioning strip 51. The working section is attached to the honeycomb sheet.

[0035] Furthermore, the working section is responsible for directly bonding with the honeycomb sheet to ensure precise positioning and support of its bending parts; the connecting section is specifically designed to achieve a quick and reliable connection with the positioning strip 51. The connection section is designed as a hexagon and engages with the positioning hole on the positioning strip 51, which greatly enhances the stability of the connection. The hexagonal structure can effectively resist rotation and prevent the cylindrical positioning rod from loosening or shifting during use, which is far superior to a simple round pin.

[0036] Furthermore, by matching the number of cylindrical positioning rods with the number of turning points of the honeycomb sheet, precise control of one-to-one positioning is achieved, ensuring that the turning point of each honeycomb sheet is firmly supported, thereby fully guaranteeing the accuracy of the overall outline of the honeycomb sheet. The upper honeycomb panel positioning assembly 6 includes a long side positioning plate 61 and a short side positioning plate 64, as well as a corresponding long side side plate 63 and a short side side plate 66. A cylindrical positioning rod is inserted between the long side positioning plate 61 and the short side positioning plate to support and limit the stacked honeycomb sheets. The upper honeycomb panel positioning component 6 is arranged in a spliced ​​structure. The upper honeycomb panel positioning component 6 includes a long side positioning plate 61 and a short side positioning plate 64. The long side positioning plate 61 and the short side positioning plate 64 are symmetrically distributed. A cylindrical positioning rod is erected between the long side positioning plate 61 and the short side positioning plate 64. The cylindrical positioning rod is set to correspond to the diameter of the honeycomb tube of the honeycomb module. The cylindrical positioning rod passes through the honeycomb tube. The two sides of the cylindrical positioning rod are respectively inserted into the long side positioning plate 61 and the short side positioning plate 64. The cylindrical positioning rod includes a working section and a connecting section. The connecting section is set to correspond to the positioning round hole. The working section is set to correspond to the honeycomb tube and passes through the honeycomb tube. The connecting section is distributed on both sides of the working section and is respectively inserted into the long side plate 62 and the short side plate 65. It should be noted that the upper honeycomb cell positioning component 6 provided in this application is installed on the limiting mechanism of the welding platform and is installed in a vertical direction, connecting layer by layer, thereby ensuring the stacking accuracy of each layer of honeycomb cells. In addition, a horizontal reference line for the layer height and a vertical reference line for the weld position matching the honeycomb tube are also provided on the inner surface of the upper honeycomb cell positioning component 6, which are used to compare the position accuracy of each layer of honeycomb cells.

[0037] Furthermore, the symmetrically distributed upper honeycomb panel positioning components 6 and the cylindrical positioning rods form a rigid skeleton, firmly clamping the honeycomb tube to prevent any slight displacement or rotation during the stacking process, ensuring that the absolute position of each honeycomb panel is precisely aligned in three-dimensional space, thus solving the problem of cumulative deviation caused by visual errors and clamping jitter in traditional stacking. Specifically, the long side positioning plate 61 includes a long side plate 62 and a long side plate 63. The long side plate 62 and the long side plate 63 are arranged perpendicularly and connected by bolts. The long side plate 62 has positioning holes, which are set based on the position of the honeycomb tubes in the honeycomb module. The positioning holes correspond one-to-one with the honeycomb tubes. The short side positioning plate 64 includes a short side plate 65 and a short side plate 66. The short side plate 65 and the short side plate 66 are arranged correspondingly and are arranged perpendicularly and connected by bolts.

[0038] Furthermore, each cylindrical positioning rod penetrating the positioning hole not only provides a stable bottom support for the current layer of honeycomb sheet, preventing it from sinking or shifting under gravity, but also forms a vertical constraint force on the cover layer honeycomb sheet from the upper layer, firmly locking the honeycomb sheet in the predetermined position. This makes the honeycomb sheet, the cylindrical positioning rod, and the positioning plate form a stable overall frame, eliminating the floating and shaking problems caused by poor clamping or external interference in traditional stacking. It ensures that the hexagonal core of each layer of honeycomb sheet can be precisely aligned with the lower layer with extremely high precision, thereby effectively suppressing the overall structural distortion and precision reduction caused by the accumulation of small offsets, and ensuring the consistency and reliability of the final current sharing and rectification performance of the honeycomb module. Specifically, a boss is provided on the long side plate 63. The boss is rectangular. The long side plate 63 is connected to the moving column 43 of the moving adjustment component 4 or the column of the fixed limiting component 3. The boss and the groove of the moving column 43 are correspondingly arranged. Two sets of positioning holes are provided on the long side plate 63. A connecting block is provided on the short side plate 66. The connecting block is engaged with the moving column 43. A set of positioning holes is provided on the short side plate 66.

[0039] Furthermore, the long side plate 63 and the short side plate 66 are respectively connected to the column of the limiting mechanism. After the connecting block of the short side plate 66 is engaged with the limiting mechanism, it is fixedly connected by bolts. The boss of the long side plate 63 can be slidably connected with the groove of the limiting mechanism, and the fixing range can be adjusted through two sets of first positioning holes, thereby adjusting the cellular module. Auxiliary control mechanism: used to apply pressure and constrain the honeycomb sheets during the welding process, including a single-layer honeycomb sheet pressure plate 7 and a double-layer honeycomb sheet pressure plate 71 for pressing the honeycomb sheets, and a top plate pressure plate 72 and a side plate pressure plate 73 for preventing welding deformation.

[0040] Furthermore, the single-layer honeycomb sheet pressure plate 7 and the double-layer honeycomb sheet pressure plate 71 are correspondingly set with the frame of the honeycomb module. The length of the honeycomb sheet pressure plate is consistent with that of the frame. The single-layer honeycomb sheet pressure plate 7 and the double-layer honeycomb sheet pressure plate 71 include a rectangular parallelepiped base. The two ends of the base are respectively attached to the inner wall of the frame. A toothed rack is provided at the lower end of the base. The outline of the toothed rack is corresponding to that of the honeycomb sheet.

[0041] Furthermore, by tightly fitting the end face of the honeycomb sheet pressure plate to the frame, a rigid positioning reference surface with the same reference as the module frame is provided for the honeycomb sheet pressure plate. The rack structure at the lower end of the pressure plate, which matches the outline of the honeycomb sheet, is equivalent to a mold or caliper. It not only applies uniform clamping force to ensure that the honeycomb sheet does not warp, but more importantly, each tooth of the rack can be aligned with the bending part of the honeycomb sheet. During the clamping process, the honeycomb sheet is actively forced to be constrained in the only correct position, thereby completely eliminating the random error of single-layer positioning, ensuring the high consistency and accurate transmission of the welding reference of each layer, and preventing the deformation problem of the honeycomb channel structure caused by the accumulation of layer-by-layer deviation. Specifically, the tooth pattern of the rack matches the center pattern of the honeycomb sheet bending section, the rack meshes with the bending section of the honeycomb sheet, the tooth pattern of the rack is trapezoidal, and the edges of the rack are all rounded.

[0042] Furthermore, the precise meshing relationship transforms the clamping force of the rack into a precise clamping force with positioning function acting on specific nodes of each honeycomb cell. Using the geometric center of the bending part as a reference, micron-level alignment calibration is achieved. Random errors that cannot be avoided by traditional processes, such as material tolerances and uneven stacking, are forcibly corrected to zero through physical meshing, ensuring that the posture of each honeycomb cell in three-dimensional space is uniform and stable, thereby guaranteeing the high regularity and high precision of the honeycomb tube. Specifically, the substrate has multiple connection holes that are evenly distributed.

[0043] Furthermore, the connecting holes are used to connect the honeycomb sheet pressure plate to an external drive or fixing mechanism, providing a stable and uniform clamping force source for the honeycomb sheet pressure plate; Specifically, the single-layer honeycomb sheet pressure plate 7 has protrusions at both ends of the rack. The protrusions are set in a half-tooth shape. The protrusions are provided with tooth surfaces, tooth top surfaces, and mating surfaces that are in contact with the frame. Specifically, the rack of the double-layer honeycomb sheet pressure plate 71 includes toothed portions at both ends, with toothed bottom surfaces provided on the toothed portions, and beveled surfaces provided between the toothed bottom surfaces and the substrate.

[0044] It should be noted that when honeycomb panels are stacked layer by layer, the bending profiles of the honeycomb sheets to be welded in odd-numbered layers and even-numbered layers are different. The honeycomb sheets to be welded in adjacent layers are staggered at the ends. Specifically, the welding point profiles at both ends of the odd-numbered honeycomb sheets are precisely designed as half-tooth-shaped grooves; while the even-numbered honeycomb sheets stacked with them have corresponding half-tooth-shaped protrusions at both ends. Therefore, racks are set up to correspond to two different contour structures. When the odd-numbered honeycomb sheets (with grooves at the ends) are pushed into position on their dedicated racks, the convex tooth surface and the tooth top surface fit with the honeycomb sheets to form a stable reference. After welding is completed, the honeycomb sheet pressure plate is removed, and then the even-numbered honeycomb sheets are laid. After replacing the honeycomb sheet pressure plate, the pressing and positioning are performed again. This provides a highly flat and perfectly fitted continuous welding surface for subsequent honeycomb sheet welding, ensuring the overall accuracy of the final honeycomb module.

[0045] The honeycomb module assembly welding device described in this invention includes an assembly welding platform, a fixed limiting mechanism, a moving adjustment mechanism, a honeycomb tube positioning mechanism, and an auxiliary positioning mechanism; and controls and ensures the shape and dimensional accuracy of the honeycomb module outer frame through the side plates of the fixed limiting mechanism and the moving adjustment mechanism; the honeycomb tube positioning mechanism, composed of positioning hole plates, triangular positioning rods, and cylindrical positioning rods, is used to ensure the deviation requirements of the angle of attack and yaw angle between the honeycomb tube and the honeycomb module outer frame. The modular welding platform adopts a modular design, separating the working blocks of the platform individually to reduce machining difficulty and area while ensuring the required flatness. The working blocks are further improved in assembly accuracy through positioning pins and countersunk bolt locking. A pad is designed between the upright plate and the bracket of the fixed limiting mechanism and the moving adjustment mechanism and is connected by countersunk bolts. The thickness of the pad can be adjusted. At the same time, L-shaped limiting blocks and positioning pins are designed on both sides to ensure that the fixed limiting mechanism and the moving adjustment mechanism are perpendicular to the combined welding platform and to ensure the verticality requirement of the honeycomb module frame. To ensure that the height of the moving adjustment mechanism meets the design requirements during movement, a standard height pad is designed at the bottom, and an oil reservoir is marked on the top of the pad to reduce the friction between the moving adjustment mechanism and the mechanism during movement. At the same time, forward and backward movement is achieved through a screw drive system to reduce workload. The long and short side positioning plates are positioned by both positioning holes and positioning grooves to ensure the positioning accuracy of the positioning plates. Positioning round holes of the corresponding size are opened on the long plate according to the outline size and position of the honeycomb module and honeycomb tube. Horizontal reference lines are drawn according to the layer height of the honeycomb tube and longitudinal reference lines are drawn according to the weld position to ensure the yaw angle size accuracy of the honeycomb tube. The auxiliary positioning mechanism, consisting of a single-layer honeycomb sheet pressure plate, a double-layer honeycomb sheet pressure plate, a top plate pressure plate, and a side plate pressure plate, further ensures that the honeycomb sheets, top plate, and side plate are completely fitted during the welding of the honeycomb module, preventing deformation of the honeycomb sheets, top plate, and side plate during the welding process.

[0046] The process method uses a honeycomb module assembly welding device to assemble the honeycomb module frame into place. The movable adjustment mechanism can adapt to the assembly requirements of honeycomb module frames of different sizes and specifications. A gantry laser welding system is used to automatically complete all laser spot welding between honeycomb sheets and between honeycomb sheets and the outer frame according to a preset program, ensuring consistent welding dimensions and welding strength that meets the usage requirements.

[0047] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A method for assembling and welding a wind tunnel honeycomb module, characterized in that, Includes the following steps: S1, Level the welding table (1) and clean the welding work surface; S2, based on the fixed limiting component (3), set the U-shaped outer frame of the cellular module, and use the moving adjustment mechanism to constrain it in the horizontal and vertical directions; the specific process is as follows: Align the U-shaped outer frame with the reference line of the working block (11) on the welding table (1) and check the gap between the bottom plate of the U-shaped outer frame and the working block (11); Rotate the lead screw transmission assembly (15) to drive the moving adjustment assembly (4) to clamp the U-shaped outer frame; Measure whether the distances between the bottom and top sides of the U-shaped outer frame are consistent; The gap between the moving adjustment mechanism and the height pad (12) of the welding table (1) is detected and adjusted by bolts; S3, the bottom honeycomb panel is positioned using the bottom honeycomb panel positioning component and then spot-welded to the base plate of the U-shaped outer frame; the specific process is as follows: Lay positioning strips (51) on both sides of the working block (11) of the welding table (1), and place the triangular positioning rods (52) into the positioning grooves of the positioning strips (51) on both sides in sequence; Lay the bottom layer of honeycomb sheets along the triangular positioning bar (52), press and shape it using a single-layer honeycomb sheet pressure plate (7), and then spot weld it using a handheld laser welder. Remove the single-layer honeycomb sheet pressure plate (7), call the odd-numbered layer welding program, and use a laser automatic spot welding device to weld the bottom honeycomb sheet to the outer frame bottom plate; The bottom layer honeycomb sheet is the first honeycomb sheet, which is an odd-numbered honeycomb sheet, and subsequent odd-numbered honeycomb sheets are all referred to as single-layer honeycomb sheets; S4, combine the positioning plates on both sides, and stack and weld the upper honeycomb sheets based on the bottom honeycomb sheet; The specific process is as follows: the long side plate (63) of the long side positioning plate (61) and the short side plate (66) of the short side positioning plate (64) are respectively attached to the vertical plate surface of the honeycomb frame and positioned and clamped. The combined side plate pressure plate (73) clamps the two side plates of the U-shaped outer frame with the contact surfaces of the fixed limiting component (3) and the contact surfaces of the moving adjustment component (4); Cylindrical positioning rods are inserted sequentially between the long side positioning plate (61) and the short side positioning plate (64), and a second layer of honeycomb sheets is laid. The second layer of honeycomb sheets is then placed in pairs with the bottom layer of honeycomb sheets. The second layer of honeycomb sheet is pressed by a double-layer honeycomb sheet pressing plate (71) so that the stacking height of the second layer of honeycomb sheet is flush with the transverse welding reference line on the long side positioning plate (61); After the second layer of honeycomb sheet is fixed by spot welding with a handheld laser welding device, the double-layer honeycomb sheet pressure plate (71) is removed, the even-numbered layer welding program is switched, and the second layer of honeycomb sheet and the bottom layer of honeycomb sheet are welded by an automatic laser spot welding device. This is then used for subsequent honeycomb panel welding; The second layer of honeycomb sheet is an even-numbered layer of honeycomb sheet, and subsequent even-numbered layers of honeycomb sheet are all referred to as double-layer honeycomb sheet; S5, Weld the top plate of the honeycomb module and then cool and demold it; the specific process is as follows: Place the top panel of the honeycomb module and check the alignment accuracy between the end face of the top panel and the two side panels of the U-shaped outer frame; Detect the top surface gap between the lower surface of the top plate and the upper surface of the uppermost long side positioning plate (61) and short side positioning plate (64); Set the top plate pressure plate (72), and use intermittent welding, cross welding, and symmetrical argon arc welding process to weld the top plate of the honeycomb module; After the cellular module has completely cooled down, remove the long side positioning plates (61), cylindrical positioning rods, short side positioning plates (64), positioning strips (51) and triangular positioning rods (52) in sequence. The cellular module is hoisted and detached from the assembly and welding device.

2. The method for assembling and welding a wind tunnel honeycomb module according to claim 1, characterized in that: The subsequent honeycomb panel welding process is as follows: Insert the cylindrical positioning rods into the positioning holes of the upper layer of the second honeycomb sheet in sequence, and then lay the single layer of honeycomb sheet along the cylindrical positioning rods; The single-layer honeycomb sheet pressure plate (7) is used for pressing and shaping, and the single-layer honeycomb sheet pressure plate (7) is removed after spot welding. The odd-numbered layer welding program is called and the laser automatic spot welding device is used for welding. To achieve alignment of the end faces of the upper and lower honeycomb sheets, and to align and align the horizontal and vertical reference lines of the welding area and the long side positioning plate (61).

3. A welding apparatus for wind tunnel honeycomb modules, used in the welding manufacturing method of wind tunnel honeycomb modules as described in any one of claims 1-2, characterized in that: Includes a welding station (1): a U-shaped outer frame (2) for supporting and positioning the cellular modules; The welding table (1) is provided with a working block (11) for installing and positioning the bottom honeycomb chip positioning component, and the welding table (1) is provided with a height pad (12). Fixed limiting component (3): Fixedly installed on the welding table (1), used to tightly fit the upright plate of the U-shaped outer frame (2) from one side, forming a rigid constraint on the U-shaped outer frame (2) in the first direction; The movable adjustment component (4) is installed on the welding table (1) and a screw drive component (15) is provided between it and the welding table (1). It can move on the welding table (1) in a preset direction to tightly fit the upright plate of the U-shaped outer frame (2) from one side, forming a rigid constraint in the second direction opposite to the fixed limiting component (3). Cellular array control component: used to control the angle of attack and yaw angle deviation between the cellular panels and the U-shaped outer frame (2) and between the cellular panels; Auxiliary control mechanism: used to apply pressure and constrain the honeycomb sheets during the welding process, including a single-layer honeycomb sheet pressure plate (7) and a double-layer honeycomb sheet pressure plate (71) for pressing the honeycomb sheets, and a top plate pressure plate (72) and a side plate pressure plate (73) for preventing welding deformation.

4. The combined welding device for wind tunnel honeycomb modules according to claim 3, characterized in that: The cellular array control component includes a bottom cellular chip positioning component (5) and an upper cellular chip positioning component (6). The bottom honeycomb positioning component (5) includes a positioning strip (51), which is installed on the side of the working block (11) and has multiple sets of evenly distributed positioning grooves. Triangular positioning rods (52) are installed on positioning strips (51) to support and position the bottom honeycomb sheets, and are set to correspond to the outline of the honeycomb sheets.

5. The combined welding device for wind tunnel honeycomb modules according to claim 4, characterized in that: The upper honeycomb positioning assembly (6) includes a long side positioning plate (61) and a short side positioning plate (64), as well as a corresponding long side plate (63) and a short side plate (66). A cylindrical positioning rod is inserted between the long side positioning plate (61) and the short side positioning plate (64) to support and limit the stacked honeycomb sheets.

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