Flange joint tapping device for galvanized sheet duct processing

Abstract

The utility model relates to flange interface trepanning device technical field and disclose galvanized sheet air pipe processing treatment is with flange interface trepanning device, including mounting bracket, is provided with conveying assembly on the mounting bracket, and conveying assembly includes installation box, and the upper surface of mounting bracket is fixedly connected in installation box, and the inside fixed mounting of installation box has drive motor, through setting conveying assembly, through double -shaft air cylinder, servo cylinder, drive motor, first conveying mechanism, second conveying mechanism, first servo motor and punch press bed coordinated action, each station can carry out to the flange of processing, flange middle part, the double clamping of lower part, flangeturn over, flange step -by -step punching (by punch press bed execution), the multi -process operation of finished flange, the whole process does not need manual positioning flange's continuous flow of artificial, avoid the efficiency loss and quality deviation caused by process discontinuity or artificial operation, and then enhance flange punching production efficiency and finished product punching accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of flange interface opening device, specifically a flange interface opening device for processing galvanized sheet air ducts. Background Technology

[0002] As a core component of ventilation and air conditioning systems, galvanized steel ductwork requires precise bolt holes in its end flanges for pipe connection. The accuracy of these flange holes (diameter deviation ≤ ±0.5mm, position deviation ≤ ±1mm) directly determines the sealing performance and structural stability of the ductwork after installation. Misalignment of the holes can lead to bolt misalignment, while diameter errors can easily cause air leakage at the connection gap. Currently, the flange hole-making process for galvanized steel ductwork in the industry generally relies on traditional processing methods, which presents significant technical shortcomings. The existing drilling process requires full manual intervention: workers first move the flange to a regular drilling platform, manually hold the flange in place (lacking a dedicated clamping structure), start the drilling machine to complete single-sided drilling, and then manually flip the flange to adjust its position, repeating the positioning and drilling operations. On the one hand, manual positioning is prone to insufficient accuracy in hole position and diameter due to hand tremors and flange placement deviations, resulting in a rework rate as high as 15%-20%. On the other hand, manual handling, flipping, and positioning are time-consuming and have strong intermittent processes, which cannot meet the continuous operation requirements of large-scale production. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a flange interface opening device for processing galvanized sheet ductwork, solving the problem that the existing opening process requires full manual intervention: workers first move the flange to a regular drilling platform, manually hold the flange in place (lacking a dedicated clamping structure), start the drilling machine to complete single-sided drilling, and then manually flip the flange to adjust its position, repeating the positioning and drilling operations. On the one hand, manual positioning is prone to insufficient hole position and diameter accuracy due to hand tremors and flange placement deviations, resulting in a rework rate as high as 15%-20%; on the other hand, manual handling, flipping, and positioning are time-consuming and have strong intermittent processes, which cannot meet the continuous operation requirements of large-scale production.

[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a flange interface opening device for processing galvanized sheet air ducts, including a mounting frame, a conveying assembly on the mounting frame, the conveying assembly including a mounting box, the mounting box being fixedly connected to the upper surface of the mounting frame, and a drive motor being fixedly installed inside the mounting box; The output end of the drive motor is fixedly connected to a connecting shaft. The upper end of the connecting shaft rotates through the upper surface of the mounting box. A rotating plate is fixedly connected to the upper end of the connecting shaft. Four cylinders are fixedly installed on the upper surface of the rotating plate. The four cylinders are arranged in a cross shape. An L-shaped moving plate is fixedly connected to the telescopic end of the cylinder. A concave frame is fixedly connected to the lower surface of the L-shaped moving plate. A servo motor is fixedly installed in the concave part of the concave frame. A circular plate is fixedly connected to the front surface of the concave frame. The circular plate has a circular groove on its front surface.

[0005] Preferably, the output end of the servo motor is fixedly connected to a rotating shaft, the front end of the rotating shaft rotates through the front surface of the circular plate, and the front end of the rotating shaft is fixedly connected to a circular rotating plate. The rear surface of the circular rotating plate is fixedly connected to four arc-shaped sliding plates arranged in a cross shape, and the rear ends of the four arc-shaped sliding plates are slidably connected to the inner wall of the circular groove.

[0006] Preferably, a dual-axis cylinder is fixedly installed on the front surface of the circular rotating plate, and L-shaped frames are fixedly connected to the left and right extension ends of the dual-axis cylinder. Among them, the opposite sides of the two L-shaped frames are fixedly connected with first fixing plates, and the two first fixing plates are used to clamp the middle part of the galvanized sheet air duct. The structures on the four cylinders are completely identical.

[0007] Preferably, an L-shaped support frame is fixedly connected to the rear surface and the right side of the mounting bracket, a support fixing plate is fixedly connected to the upper surface of the L-shaped support frame, and four rectangular support plates are fixedly connected to the upper surface of the support fixing plate. The upper surfaces of the four rectangular support plates are fixedly connected to placement plates, and the upper surfaces of the support plates are fixedly connected to two servo cylinders.

[0008] Preferably, the telescopic ends of the two servo cylinders are fixedly connected to a first L-shaped moving plate, and the opposite surfaces of the two first L-shaped moving plates are fixedly connected to a second fixed clamping plate, with the two second fixed clamping plates located above the placement plate. Among them, two second fixed clamping plates are used to clamp the lower part of the galvanized sheet air duct. Two second L-shaped moving plates are fixedly connected to the opposite sides of the two second fixed clamping plates. Auxiliary rods are fixedly connected to the ends of the four second L-shaped moving plates facing the rectangular support plate.

[0009] Preferably, the ends of the four auxiliary rods that are away from the second L-shaped moving plate slide through the outer surface of the corresponding rectangular support plate; Among them, the outer walls of the four auxiliary rods are movably sleeved with springs, and the four springs are respectively fixedly connected to the corresponding rectangular support plate and the second L-shaped movable plate; The structures on the two L-shaped support frames are completely identical.

[0010] Preferably, the front surface of the mounting frame is provided with a second conveying mechanism, and the left side of the mounting frame is provided with a first conveying mechanism; The mounting bracket has a drilling machine on its rear surface and right side.

[0011] Preferably, the first fixing clamp can be replaced with a fixing clamp with a soft arc-shaped pad. The clamping surface of the clamp is designed with an arc shape, and a 3mm thick silicone soft pad is pasted on the arc-shaped surface.

[0012] Preferably, the first fixing plate can be replaced with a fixing plate with semi-circular protrusions, the clamping surface of the plate having semi-circular protrusions evenly distributed, and the spacing between the protrusions being adapted to the surface texture of the flange.

[0013] Preferably, the first fixing plate can be replaced with a fixing plate with striped patterns. The clamping surface of the plate has parallel striped patterns that can be adapted to the small protrusions on the flange edge. (III) Beneficial Effects Compared with the prior art, this utility model provides a flange interface opening device for processing galvanized sheet ducts, which has the following advantages: By setting up a conveying assembly, through the coordinated action of a dual-axis cylinder, servo cylinder, drive motor, first conveying mechanism, second conveying mechanism, first servo motor and drilling machine, each station can simultaneously carry out multi-process operations such as the flange to be processed, double clamping of the flange middle and lower part, flange flipping, flange step-by-step drilling (executed by the drilling machine), and finished flange. The entire process is a continuous process that does not require manual positioning of the flange, avoiding efficiency loss and quality deviation caused by process interruption or manual operation, thereby improving flange drilling production efficiency and finished product drilling accuracy, while reducing quality problems such as workpiece scratches and deformation caused by manual intervention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the flange interface opening device for processing galvanized sheet air ducts according to this utility model; Figure 2 This is a schematic diagram of the L-shaped support frame of this utility model; Figure 3 This is a schematic diagram of the circular groove of this utility model; Figure 4 This is a schematic diagram of the auxiliary rod of this utility model; Figure 5 This is a schematic diagram of the fixing clamp with a soft arc-shaped pad according to the present invention; Figure 6 This is a schematic diagram of the fixing clamp with semi-circular protrusions of this utility model; Figure 7 This is a schematic diagram of the fixing clamp with striped patterns of this utility model.

[0015] In the diagram: 1. Mounting frame; 2. First conveying mechanism; 3. Drilling machine; 4. Second conveying mechanism; 5. Cylinder; 6. Rotating plate; 7. L-shaped moving plate; 8. Concave frame; 9. First servo motor; 10. Circular plate; 11. Circular rotating plate; 12. Dual-axis cylinder; 13. L-shaped frame; 14. Mounting box; 15. L-shaped support frame; 16. First fixed clamping plate; 17. Placement plate; 18. Rectangular support plate; 19. Arc-shaped sliding plate; 20. Rotating shaft; 21. Circular slide; 22. Servo cylinder; 23. Support fixing plate; 24. Second fixed clamping plate; 25. First L-shaped moving plate; 26. Second L-shaped moving plate; 27. Auxiliary rod; 28. Spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-7 This utility model provides a new technical solution: a flange interface opening device for processing galvanized sheet air ducts, including a conveying component. The conveying component includes a mounting box 14 fixed on the upper surface of the mounting frame 1, and a drive motor is fixedly installed inside; it provides protection and a mounting foundation for the drive motor to ensure stable power output.

[0018] The output end of the drive motor is fixedly connected to the connecting shaft; it drives the connecting shaft and the rotating plate 6 to rotate, providing power for the transfer of workpieces between various workstations.

[0019] The upper end of the connecting shaft extends through the upper surface of the mounting box 14 and is fixedly connected to the rotating plate 6; it transmits the power of the drive motor and drives the rotating plate 6 to rotate synchronously.

[0020] Four cylinders 5 arranged in a cross pattern are fixedly installed on the upper surface of the rotating plate 6; as the connecting shaft rotates, the cylinders 5 and the workpieces they hold are switched between different workstations, realizing continuous operation of multiple processes.

[0021] The cylinder 5 is fixedly connected to the L-shaped moving plate 7 at its telescopic end; by raising and lowering the telescopic end, the L-shaped moving plate 7 and the clamping assembly below it are moved up and down to adjust the workpiece height to adapt to the needs of different workstations.

[0022] The lower surface of the L-shaped moving plate 7 is fixedly connected to the concave frame 8; it receives the power of the cylinder 5 and drives the concave frame 8 and the flipping and clamping components to move synchronously.

[0023] The first conveying mechanism 2 is located on the left side of the mounting frame 1, and runs from right to left; it is used to convey the finished galvanized sheet duct flanges and transfer the finished products to the next process.

[0024] The second conveying mechanism 4 is located on the front surface of the mounting frame 1 and runs from front to back; it is used to convey the galvanized sheet duct flange to be processed and to transport the workpiece to the front clamping station.

[0025] The dual-axis cylinder 12 is fixedly installed on the front surface of the circular rotating plate 11, and the left and right telescopic ends are both fixedly connected to the L-shaped frame 13; by the telescopic ends retracting towards each other, the first fixed clamping plate 16 is driven to move closer together, thereby achieving the clamping and fixing of the middle part of the flange.

[0026] The L-shaped frame 13 is fixedly connected to the first fixed clamping plate 16 on opposite sides; it connects the dual-axis cylinder 12 and the first fixed clamping plate 16 to transmit clamping power and ensure that the clamping plates move synchronously.

[0027] The first fixing clamp 16 consists of two plates, used to clamp the middle of the galvanized sheet duct; rubber pads can be pasted on the inner wall to avoid rigid clamping scratching the flange surface, while also increasing friction to prevent workpiece displacement.

[0028] The L-shaped support frame 15 is fixed to the rear surface and right side of the mounting frame 1, and the upper surface is fixedly connected to the support fixing plate 23; it provides support for the support fixing plate 23 and the placement plate 17 to ensure the stability of the lower clamping position.

[0029] Four rectangular support plates 18 and two servo cylinders 22 are fixedly connected to the upper surface of the support plate 23; the rectangular support plates 18 and servo cylinders 22 are supported, providing an installation base for the lower clamping assembly.

[0030] A placement plate 17 is fixedly connected to the upper surface of a rectangular support plate 18, and a hole is provided through it for the auxiliary rod 27 to slide. The support plate 17 supports the placement plate 17 and provides guidance for the auxiliary rod 27, limiting its lateral displacement.

[0031] The placement plate 17 is located below the second fixing plate 24; it supports the lower part of the flange to be drilled and works with the second fixing plate 24 to achieve double clamping.

[0032] The telescopic end of the servo cylinder 22 is fixedly connected to the first L-shaped moving plate 25; by moving the telescopic ends towards each other, the second fixed clamping plate 24 is driven to move closer together, thereby achieving clamping and fixing of the lower part of the flange.

[0033] The first L-shaped moving plate 25 is fixedly connected to the second fixed clamping plate 24 on opposite sides; the servo cylinder 22 is connected to the second fixed clamping plate 24 to transmit clamping power.

[0034] The second fixed clamping plates 24 are in pairs and are used to clamp the lower part of the galvanized sheet duct; the opposite sides are fixedly connected to the second L-shaped moving plate 26 to ensure uniform force during clamping.

[0035] The second L-shaped movable plate 26 is fixedly connected to the auxiliary rod 27 at one end facing the rectangular support plate 18; the auxiliary rod 27 is driven to slide along the through hole of the rectangular support plate 18 to enhance the stability of the clamping assembly.

[0036] The auxiliary rod 27 is movably sleeved with a spring 28 on its outer wall; when it slides along the rectangular support plate 18, the spring 28 is compressed to generate elastic force, which buffers the impact force at the moment of clamping and avoids excessive clamping that could cause flange deformation.

[0037] The two ends of the spring 28 are fixed to the rectangular support plate 18 and the second L-shaped moving plate 26 respectively; the spring 28 buffers the impact force through elastic deformation and assists the clamping assembly in resetting.

[0038] A servo motor 9 is fixedly installed in the concave part of the concave frame 8, and a circular plate 10 is fixedly connected to the front surface; this provides installation support for the servo motor 9 and the circular plate 10, ensuring stable flipping action.

[0039] The output end of the servo motor 9 is fixedly connected to the rotating shaft 20; it drives the rotating shaft 20 and the circular rotating plate 11 to rotate, thereby turning the workpiece up and down.

[0040] A circular groove 21 is provided on the front surface of the circular plate 10 to provide sliding guidance for the arc-shaped sliding plate 19 and ensure that the circular rotating plate 11 rotates smoothly.

[0041] The front end of the rotating shaft 20 extends through the front surface of the circular plate 10 and is fixedly connected to the circular rotating plate 11; it transmits the power of the servo motor 9 and drives the circular rotating plate 11 to rotate synchronously.

[0042] Four arc-shaped sliding plates 19 arranged in a cross pattern are fixedly connected to the rear surface of the circular rotating plate 11, and a dual-axis cylinder 12 is fixedly installed on the front surface. The workpiece is flipped as it rotates with the rotating shaft 20. The arc-shaped sliding plates 19 cooperate with the circular sliding groove 21 to limit the offset and ensure accurate flipping.

[0043] The rear end of the curved slide plate 19 is slidably connected to the inner wall of the circular slide groove 21; it slides along the circular slide groove 21 as the circular rotating plate 11 rotates, enhancing the stability of the flipping assembly and preventing shaking during rotation.

[0044] Furthermore, when using the flange interface opening device for processing galvanized sheet ductwork, the second conveying mechanism 4 runs from front to back, and the second conveying mechanism 4 is used to convey the galvanized sheet duct flange to be processed. The first conveying mechanism 2 runs from right to left. The first conveying mechanism 2 is used to convey the processed galvanized sheet duct flanges. There are two flanges on the galvanized sheet duct. First, the second conveying mechanism 4 is activated to transport the processed galvanized sheet duct flange to the opposite sides of the two front first fixed clamping plates 16, and then the front double-shaft cylinder 12 is activated. Among them, the left and right telescopic ends of the front dual-axis cylinder 12 retract synchronously towards each other, driving the two L-shaped frames 13 to move towards the galvanized sheet duct flange. The L-shaped frames 13 drive the first fixed clamping plates 16 on opposite sides to move closer together. Until the inner walls of the two first fixed clamping plates 16 are tightly fitted with the middle of the flange, the middle of the flange is stably clamped. Rubber pads can be pasted on the inner walls of the first fixed clamping plates 16 to avoid the rigid clamping scratching the surface of the galvanized sheet flange. At the same time, it enhances the friction between the clamping plates and the flange, preventing the flange from shifting during subsequent adjustment or drilling, laying the foundation for accurate positioning. While the dual-axis cylinder 12 is clamping the middle of the flange, the corresponding servo cylinder 22 above the placement plate 17 is activated. The extension and retraction end of the servo cylinder 22 drives the first L-shaped moving plate 25 to move upward as a whole. Then, the drive motor is started, and the output end of the drive motor drives the rotating plate 6 to rotate to the right through the connecting shaft. When the first fixing clamp 16, which fixes the galvanized sheet air duct, rotates to the right side of the placement plate 17, the servo motor 7 is paused. Subsequently, the reset cylinder 5 moves the galvanized sheet duct downwards to above the right-side placement plate 17. Then, the two servo cylinders 22 located on the right side are activated. The extension and retraction ends of the two servo cylinders 22 move the two second fixed clamping plates 24 to opposite positions through the two first L-shaped moving plates 25. The second L-shaped moving plates 26 on opposite sides move the auxiliary rod 27 along the through hole of the rectangular support plate 18. The spring 28 on the outer wall of the auxiliary rod 27 is slightly compressed. The elastic force of the spring 28 can buffer the instantaneous impact force during clamping and avoid excessive clamping that could cause flange deformation. This continues until the two second fixed clamping plates 24 are tightly fitted to the lower part of the flange, completing the double clamping of the middle and lower parts of the flange and completely eliminating the possibility of flange shaking during drilling. Then, the drilling machine 3 located on the right side is started to drill holes in the upper flange. After the drilling is completed, the two servo cylinders 22 are reset. Then, the corresponding cylinder 5 and drive motor are started. The drive motor drives the galvanized sheet duct after the upper flange is drilled to move to the L-shaped moving plate 7 located on the rear side. During the movement to the right, the corresponding first servo motor 9 is activated. The extension end of the first servo motor 9 drives the circular rotating plate 11 to rotate through the rotating shaft 20, thereby changing the up and down position of the galvanized sheet air duct. Then, the two servo cylinders 22 located on the rear side and the drilling machine 3 are activated to drill holes. After drilling is completed, the two servo cylinders 22 and the corresponding cylinders 5 located on the rear side are reset, the drive motor is restarted, and the galvanized sheet air duct with the hole completed is moved to the first conveying mechanism 2. The dual-axis cylinder 12 is reset, the first conveying mechanism 2 is started, and the finished flange is conveyed to the next process. At the same time, the other cylinders 5 can simultaneously grab new galvanized sheet air ducts and then perform secondary drilling operations to achieve continuous drilling and improve drilling efficiency. By setting up a conveying assembly, and through the coordinated action of a dual-axis cylinder 12, a servo cylinder 22, a drive motor, a first conveying mechanism 2, a second conveying mechanism 4, a first servo motor 9, and a drilling machine 3, each station can simultaneously carry out multi-process operations such as the flange to be processed, the double clamping of the flange middle and lower part, the flange flipping, the flange step-by-step drilling (executed by the drilling machine 3), and the finished flange. The entire process is a continuous flow without the need for manual positioning of the flange, avoiding efficiency losses and quality deviations caused by process interruptions or manual operation, thereby improving the flange drilling production efficiency and the drilling accuracy of the finished product, while reducing quality problems such as workpiece scratches and deformation caused by manual intervention.

[0045] Example 1: Application of thin galvanized sheet flange clamping scenario where a fixing clamp with a soft arc-shaped pad replaces the original first fixing clamp 16. like Figure 5 As shown Scene background When processing 0.5mm thick thin galvanized sheet duct flanges in a ventilation equipment factory, the material is thin and weak, making it prone to deformation under stress. If the original first fixing clamp 16 used in conventional environments is used, because the original first fixing clamp 16 is a flat rigid clamp, core problems are exposed during clamping: First, the contact area between the rigid clamp and the thin flange is small, and the pressure is concentrated, which easily presses indentations or creases on the flange edge, resulting in a high deformation rate and affecting the subsequent flange interface splicing accuracy; Second, the inner wall of the clamp is smooth and has no cushioning, which easily scratches the galvanized layer during clamping, resulting in a decrease in the flange's corrosion resistance; Third, the thin flange is prone to slipping and shifting between the clamps, especially during flipping or transportation, requiring repeated manual adjustment of the position, affecting processing efficiency. At this time, the original first fixing clamp 16 is replaced with a fixing clamp with a soft arc-shaped pad. The clamping surface of the clamp is designed with the flange arc shape, and a 3mm thick silicone soft pad is pasted on the arc surface. Its texture is flexible and wear-resistant, and the fixed connection structure with the L-shaped frame 13 is retained to ensure installation compatibility; The soft silicone gasket can deform slightly with the surface of the thin flange, dispersing the clamping pressure (avoiding excessive local pressure) and completely solving the problem of the thin flange being dented and creased; the arc design fits the edge contour of the flange, reducing rigid compression on the thin material and ensuring that the flange remains flat after processing, without affecting the sealing of subsequent interface splicing. The silicone pad is soft and smooth, and there is no rigid friction when it comes into contact with the galvanized layer, which can prevent the clamp from scratching the galvanized layer; the intact galvanized layer can maintain the corrosion resistance of the flange, reduce the rust problem caused by the coating damage during subsequent use, and extend the overall service life of the duct. The contact area between the soft gasket and the thin flange is larger than that of the original rigid clamp. Combined with the arc-shaped fitting design, it can enhance the clamping stability and prevent the flange from slipping or shifting during flipping, transportation or drilling. No manual adjustment is required, reducing process interruptions and adapting to the continuous processing needs of thin galvanized sheet flanges.

[0046] Example 2: Application of using a fixed clamping plate with semi-circular protrusions to replace the original second fixed clamping plate 24 in the clamping of an oil-stained galvanized sheet flange. like Figure 6 As shown Scene background When processing and storing galvanized sheet duct flanges with slight oil stains on their surface during a certain project site (the oil stains reduce surface friction), if the original first fixing clamp 16 used in the conventional environment is used, there are obvious problems when clamping it because the original first fixing clamp 16 is a planar rigid clamp: First, the oil stains reduce the friction between the clamp and the flange, and it is easy to loosen and slip after clamping, especially when drilling, the flange is easily displaced by the impact force, resulting in the deviation of the hole diameter position; Second, to prevent slippage, the clamping force needs to be increased, and excessive force can easily damage the flange surface (especially the galvanized layer on the flange edge); Third, the clamp cannot "penetrate" the slight oil stains to contact the flange body, the clamping stability fluctuates with the amount of oil stains, and the processing quality is inconsistent. At this time, the original second fixing clamp 24 is replaced with a fixing clamp with semi-circular protrusions. The clamping surface of the clamp is evenly distributed with semi-circular protrusions (protrusion height 1.5mm, material is wear-resistant rubber), the protrusion spacing is adapted to the flange surface texture, and the fixed connection structure with the first L-shaped moving plate 25 is retained; The semi-circular protrusions can be embedded in the slight oil stains on the flange surface and directly contact the galvanized sheet body. At the same time, the protrusions increase the friction coefficient between the clamping plate and the flange, and even if there are oil stains on the surface, it can prevent the clamping from loosening or slipping. Especially during the drilling process, the flange can be firmly fixed on the placement plate 17, and the accuracy of the hole diameter position is significantly improved, without the need for repeated calibration. The "point contact" design of the raised dots reduces the impact of oil on the clamping effect, eliminating the need to increase the clamping force to compensate for friction and avoiding excessive pressure that could damage the flange surface or galvanized layer. After clamping, the flange surface remains free of indentations and scratches, maintaining its original appearance and performance.

[0047] Example 3: Application of a fixed clamping plate with striped patterns to replace the original first fixed clamping plate 16 in the clamping of irregular galvanized sheet flanges. like Figure 7 As shown Scene background A custom ventilation factory processes irregularly shaped galvanized sheet duct flanges. The flange edges have small, localized protrusions and are not completely flat, for special interface splicing. If the original first fixing clamp 16, used in conventional environments, is used, its flat, rigid nature presents several problems during clamping: First, the flat clamp cannot conform to the protruding surface of the irregular flange, resulting in uneven force during clamping. Excessive pressure on the protruding areas easily leads to damage, while insufficient pressure on the recessed areas easily causes loosening. Second, the large contact gap between the clamp and the flange makes the flange prone to tilting and shifting during flipping and transfer, and can cause misaligned holes during drilling. Third, manual placement of gaskets between the clamp and the flange to fill the gap is cumbersome, and the gaskets are prone to falling off, affecting processing efficiency. Therefore, the original first fixing clamp 16 is replaced with a fixing clamp with striped patterns. The clamping surface of the clamp has parallel striped patterns that can adapt to the small protrusions on the flange edges, while retaining the fixed connection structure with the L-shaped frame 13. The striped pattern can accommodate small protrusions on the flange edge, while the gaps between the stripes can fit the recessed parts of the flange, ensuring full contact and uniform pressure between the clamp and the surface of the irregular flange; preventing the protruding parts from being crushed and preventing the recessed parts from loosening due to insufficient pressure, thus adapting to the special structural requirements of irregular flanges. The texture fits the irregular surface well, reducing the gap between the clamp and the flange. Even during flipping or transportation, the flange will not tilt or shift. When drilling, the flange position is stable, and the hole diameter direction and position are accurate, which meets the interface splicing requirements of irregular flanges and requires no subsequent correction. The striped pattern directly adapts to irregular surfaces, eliminating the need for manual shims to fill gaps, simplifying the operation process and reducing manual intervention; it is especially suitable for small-batch, multi-specification processing of customized irregular flanges, and can quickly switch clamping to adapt to flanges with different protrusion sizes, improving the flexibility of customized processing.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flange interface opening device for processing galvanized sheet ductwork, comprising a mounting bracket (1), characterized in that: The mounting frame (1) is provided with a conveying assembly, which includes a mounting box (14). The mounting box (14) is fixedly connected to the upper surface of the mounting frame (1), and a drive motor is fixedly installed inside the mounting box (14). Among them, the output end of the drive motor is fixedly connected to a connecting shaft, the upper end of the connecting shaft rotates through the upper surface of the mounting box (14), the upper end of the connecting shaft is fixedly connected to a rotating plate (6), and four cylinders (5) are fixedly installed on the upper surface of the rotating plate (6). Among them, four cylinders (5) are arranged in a cross shape. An L-shaped moving plate (7) is fixedly connected to the telescopic end of the cylinder (5). A concave frame (8) is fixedly connected to the lower surface of the L-shaped moving plate (7). A servo motor (9) is fixedly installed in the concave part of the concave frame (8). A circular plate (10) is fixedly connected to the front surface of the concave frame (8). The circular plate (10) has a circular groove (21) on its front surface.

2. The flange interface opening device for processing galvanized sheet ducts according to claim 1, characterized in that: The output end of the servo motor (9) is fixedly connected to a rotating shaft (20), the front end of the rotating shaft (20) rotates through the front surface of the circular plate (10), and the front end of the rotating shaft (20) is fixedly connected to a circular rotating plate (11). The rear surface of the circular rotating plate (11) is fixedly connected with four arc-shaped sliding plates (19) arranged in a cross shape. The rear ends of the four arc-shaped sliding plates (19) are slidably connected to the inner wall of the circular groove (21).

3. The flange interface opening device for processing galvanized sheet ductwork according to claim 2, characterized in that: A dual-axis cylinder (12) is fixedly installed on the front surface of the circular rotating plate (11), and L-shaped frames (13) are fixedly connected to the left and right extension ends of the dual-axis cylinder (12). Among them, the opposite sides of the two L-shaped frames (13) are fixedly connected with first fixing plates (16), and the two first fixing plates (16) are used to clamp the middle part of the galvanized sheet air duct; The structures on the four cylinders (5) are completely identical.

4. The flange interface opening device for processing galvanized sheet ductwork according to claim 1, characterized in that: The rear surface and right side of the mounting bracket (1) are fixedly connected to an L-shaped support bracket (15), the upper surface of the L-shaped support bracket (15) is fixedly connected to a support fixing plate (23), and the upper surface of the support fixing plate (23) is fixedly connected to four rectangular support plates (18). Among them, the upper surface of the four rectangular support plates (18) is fixedly connected to the placement plate (17), and the upper surface of the support fixing plate (23) is fixedly connected to two servo cylinders (22).

5. The flange interface opening device for processing galvanized sheet ductwork according to claim 4, characterized in that: The telescopic ends of the two servo cylinders (22) are fixedly connected to a first L-shaped moving plate (25), and the opposite surfaces of the two first L-shaped moving plates (25) are fixedly connected to a second fixed clamping plate (24). The two second fixed clamping plates (24) are located above the placement plate (17). Among them, two second fixed clamping plates (24) are used to clamp the lower part of the galvanized sheet air duct. Two second L-shaped moving plates (26) are fixedly connected to the opposite surfaces of the two second fixed clamping plates (24). Auxiliary rods (27) are fixedly connected to one end of each of the four second L-shaped moving plates (26) facing the rectangular support plate (18).

6. The flange interface opening device for processing galvanized sheet ductwork according to claim 5, characterized in that: The four auxiliary rods (27) slide through the outer surface of the corresponding rectangular support plate (18) at the ends away from the second L-shaped moving plate (26); Among them, the outer walls of the four auxiliary rods (27) are movably sleeved with springs (28), and the four springs (28) are respectively fixedly connected to the corresponding rectangular support plate (18) and the second L-shaped moving plate (26); The structures on the two L-shaped support frames (15) are completely identical.

7. The flange interface opening device for processing galvanized sheet ductwork according to claim 1, characterized in that: The front surface of the mounting frame (1) is provided with a second conveying mechanism (4), and the left side of the mounting frame (1) is provided with a first conveying mechanism (2). Among them, the rear surface and right side of the mounting bracket (1) are provided with a drilling machine (3).

8. The flange interface opening device for processing galvanized sheet ductwork according to claim 3, characterized in that: The first fixing clamp (16) is replaced with a fixing clamp with a soft arc-shaped pad. The clamping surface of the clamp is designed to be arc-shaped with the flange arc, and a 3mm thick silicone soft pad is pasted on the arc-shaped surface.

9. The flange interface opening device for processing galvanized sheet ductwork according to claim 5, characterized in that: The second fixing plate (24) is replaced with a fixing plate with semi-circular protrusions. The semi-circular protrusions are evenly distributed on the clamping surface of the plate, and the spacing of the protrusions is adapted to the surface texture of the flange.

10. The flange interface opening device for processing galvanized sheet ductwork according to claim 3, characterized in that: The first fixing plate (16) is replaced with a fixing plate with striped patterns. The clamping surface of the plate has parallel striped patterns that can be adapted to the small protrusions on the flange edge.

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