A flanging device for welding a pipe sheet metal part

Abstract

The application discloses a flanging tool device for pipeline sheet metal welding, and relates to the technical field of flanging tools, which comprises a work platform, the top surface of the work platform is detachably provided with a positioning support, and further comprises a flanging work tool, a flanging positioning assembly, a manual flanging punch rod assembly, an inspection tool assembly and a pipeline sheet metal part used for completing the flanging work. The flanging work tool is used as a pipeline sheet metal flanging die to clamp and install the pipeline sheet metal part. The flanging work tool comprises a flanging tool bottom plate. Through the cooperation of the clamping positioning structure, the supporting and supporting structure, the manual flanging structure and the inspection and finishing structure, the flanging position precision and the flanging height consistency of the pipeline sheet metal part can be improved, the hole peripheral plate deformation can be reduced, and the flanging work and the post-flanging inspection and finishing can be completed by one person, so that the overall flanging quality is improved and the processing cost is reduced. The application is particularly suitable for the manual flanging processing of single-piece and small-batch pipeline sheet metal parts.

Description

Technical Field

[0001] This invention relates to the field of flanging fixture technology, specifically to a flanging fixture device for welding sheet metal parts for pipelines. Background Technology

[0002] Pipeline sheet metal parts are widely used in aerospace, machinery and equipment, vehicle manufacturing and related welding and assembly fields. In actual production, some pipeline sheet metal parts often need to be flanged at the preset hole positions in order to meet the requirements of subsequent welding connection, sealing fit or structural installation, so as to form a flanged structure that meets the welding size requirements.

[0003] Existing methods for flanging sheet metal parts for pipelines mostly rely on stamping equipment, special molds, or batch flanging devices. Although such equipment is suitable for mass production, it usually has problems such as complex tooling structure, high manufacturing cost, long debugging time, and insufficient operational flexibility. Especially when used in single-piece, small-batch, or trial production stages, it is easy to cause low equipment utilization, long preparation cycle, and high overall processing cost.

[0004] On the other hand, for irregularly shaped pipe sheet metal parts with high positioning requirements, some existing simple flanging methods usually only use manual processing with ordinary punches, lacking special positioning, support and limiting structures, which can easily lead to unstable workpiece placement, displacement during the flanging process, and problems such as inconsistent flanging height, collapse and deformation of the sheet metal around the hole, and unstable flanging quality.

[0005] Meanwhile, existing manual flanging solutions often require multiple people to work together during clamping and operation, which is not conducive to a single person quickly completing operations such as loading, positioning, flanging and inspection, and is difficult to meet the needs of low-cost and highly flexible on-site operations.

[0006] To address this issue, we propose a flanging fixture for welding sheet metal parts for pipelines. Summary of the Invention

[0007] In view of this, and in view of the shortcomings of the prior art, the present invention provides a flanged tooling device for welding sheet metal parts of pipelines, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a flanging fixture for welding pipe sheet metal parts, comprising a working platform, a positioning support component detachably mounted on the top surface of the working platform, and further comprising a flanging work fixture, a flanging positioning component, a manual flanging punch component, an inspection fixture component, and a pipe sheet metal part for completing the flanging operation. The flanging tooling serves as a flanging mold for pipe sheet metal parts, which is used to snap and install the pipe sheet metal parts. The flanging tooling includes a flanging tooling base plate, a pipe installation groove is opened on the top surface of the flanging tooling base plate, a positioning pin is opened on the top surface of the flanging tooling base plate, and multiple flanging holes are opened through the interior of the flanging tooling base plate. The flange positioning assembly includes a tooling working base plate fitted inside the positioning support. The upper surface of the tooling working base plate is provided with an irregular support surface for supporting the sheet metal parts of the track. The interior of the tooling working base plate is provided with clearance flange holes that correspond one-to-one with the flange holes. The periphery of the clearance flange holes is provided with annular bearing steps. The manual flanging punch assembly includes a clamping support rotatably mounted on the top surface of the work platform, a hand-held force-applying handle rotatably mounted inside the top surface of the clamping support, a guide punch slidably mounted inside the clamping support, a punch head detachably mounted at the bottom of the guide punch, and a punching baffle fixedly mounted on the top surface of the work platform to limit the downward depth of the punch head. The inspection fixture assembly includes a flange inspection fixture set above the work platform. The flange inspection fixture has an inspection hole through its surface and a positioning groove through its interior. The inspection fixture assembly is used to inspect the flange height of the flanged pipe sheet metal parts and to trim and guide any excessively high parts.

[0009] Preferably, the upper surface of the flange tooling base plate is detachably mounted with a flange tooling pressure plate by bolts. The shape of the pipe fitting installation groove is adapted to the pipe sheet metal part, which is used to initially position the pipe sheet metal part. The positioning pin further positions the pipe sheet metal part placed inside the pipe fitting installation groove.

[0010] Preferably, the inside of the flange tooling pressure plate is in contact with the surface of the pipe sheet metal part, so as to prevent the pipe sheet metal part from moving when the flange operation is performed.

[0011] Preferably, the top surface of the tooling base plate is symmetrically fixed with lateral edge blocks, which fit the outer contours of both sides of the flanged tooling base plate and are used for preliminary positioning of the pipe sheet metal parts. The flanged tooling base plate and the tooling base plate are detachably installed through a pin.

[0012] Preferably, the irregular support surface is used to support the flanging fixture base plate, and the irregular support surface is adapted to the bottom surface of the flanging fixture base plate. The position of the annular pressure step corresponds one-to-one with the flanging hole, and the annular pressure step is used to support the sheet metal around the hole to be flanged during the flanging process. The lateral side stop block facilitates automatic positioning when a single person places the flanging fixture base plate.

[0013] Preferably, a return spring is sleeved on the outer surface of the guide punch, a support seat is installed on one side of the top of the clamping support for supporting the hand-held force-applying handrail, the top of the guide punch is rotatably mounted on the bottom surface of the hand-held force-applying handrail, a positioning ring is provided on the outer surface of the guide punch, and the return spring is provided between the positioning ring and the clamping support.

[0014] Preferably, the position of the punch corresponds to the position of the flanging hole, and the punch cooperates with the flanging hole on the base plate of the flanging fixture to complete the manual stamping operation of the pipe sheet metal parts.

[0015] Preferably, the size and number of inspection holes correspond one-to-one with the flange holes.

[0016] Preferably, the inspection hole is connected to the positioning groove, which is used to limit the position of the pipe sheet metal parts during inspection operations.

[0017] Preferably, the size of the inspection hole is the same as the flange size of the pipe sheet metal part after the flange operation. The inspection hole is used to locate and inspect the flange size of the pipe sheet metal part.

[0018] Compared with the prior art, the present invention provides a flanged tooling device for welding sheet metal parts of pipelines, which has the following beneficial effects: By combining the flanging fixture base plate, flanging fixture pressure plate, pipe fitting mounting groove and positioning pin, the sheet metal parts of the pipeline can be quickly clamped and stably positioned, reducing workpiece movement and positional deviation during the flanging process, thereby improving the flanging position accuracy and processing stability.

[0019] By combining the tooling base plate, irregular support surface, clearance flange hole and annular pressure step, the area to be flanged has sufficient clearance space and reliable support during the forming process, thereby reducing the collapse, bulging and corrugation of the plate material around the hole, and improving the flatness of the flange edge and the structural stability of the flange root.

[0020] By coordinating the clamping support, hand-held force-applying handle, guide punch, punch head, return spring, and stamping baffle, the punch head can complete the manual flanging operation along a stable trajectory, and the downward depth of the punch head is limited, thereby reducing the difficulty of manual operation, ensuring the consistency of flanging height, improving the efficiency of continuous operation, and facilitating manual operation by a single person.

[0021] By combining the flanging inspection fixture, inspection holes, and positioning slots, the flanging dimensions can be quickly inspected after flanging is completed, and any excessive height can be trimmed and guided, thereby improving the dimensional accuracy and consistency after flanging and providing a reliable guarantee for subsequent welding and assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram showing the positional relationship of the clamping support in this invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic diagram showing the positional relationship of the guide punch in this invention; Figure 6 This is a schematic diagram showing the positional relationship of the tooling base plate of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C; Figure 8 This is a schematic diagram of the flange inspection fixture of the present invention. Figure 9 For the present invention Figure 8 A schematic diagram from a planar perspective; Figure 10 This is a schematic diagram of the top structure of the flange tooling base plate of the present invention; Figure 11 This is a schematic diagram showing the positional relationship of the stamping baffle in this invention.

[0023] In the diagram: 11. Working platform; 12. Positioning support component; 21. Flanging fixture base plate; 22. Pipe fitting mounting groove; 23. Locating pin; 24. Flanging hole; 25. Flanging fixture pressure plate; 31. Tooling base plate; 32. Irregularly shaped support surface; 33. Clearance flange hole; 34. Annular bearing step; 35. Lateral edge stop block; 41. Clamping support; 42. Hand-held force-applying handle; 43. Guide punch; 44. Return spring; 45. Punch; 46. Stamping baffle; 51. Flanging inspection fixture; 52. Inspection hole; 53. Positioning slot; 61. Sheet metal parts for pipework. Detailed Implementation

[0024] 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.

[0025] Embodiments of the present invention Please see Figures 1 to 11A flanged tooling device for welding sheet metal parts of pipelines includes a working platform 11, on the top surface of which a positioning support 12 is detachably installed.

[0026] The working platform 11 serves as the installation foundation for the entire device, providing support for the flanging tooling, flanging positioning assembly, manual flanging punch assembly, and inspection tooling assembly. The positioning support 12 is used to bear and limit the flanging positioning assembly. Through the cooperation of the working platform 11 and the positioning support 12, the entire tooling can maintain a stable support state during manual operation, avoiding shaking during the stamping process, which helps to ensure the stability of the flanging position and flanging size.

[0027] In this embodiment, the device also includes a flanging tooling, a flanging positioning assembly, a manual flanging punch assembly, an inspection tooling assembly, and a pipe sheet metal part 61 for completing the flanging operation.

[0028] All components are centrally arranged on the same work platform 11, so that the clamping, flanging and inspection and repair of the pipe sheet metal parts 61 can be completed continuously in the same station, thereby reducing the positional error caused by the handling and repeated alignment of the workpiece between different stations, which is conducive to improving the correspondence accuracy between the flanged part and the subsequent welding part, and also facilitates continuous operation by a single person.

[0029] The flanging fixture includes a flanging fixture base plate 21. A pipe fitting installation groove 22 is provided on the top surface of the flanging fixture base plate 21. A positioning pin 23 is provided on the top surface of the flanging fixture base plate 21. Multiple flanging holes 24 are provided through the interior of the flanging fixture base plate 21. The shape of the pipe fitting installation groove 22 is adapted to the outer contour of the pipe sheet metal part 61 and is used to initially limit the position of the pipe sheet metal part 61 when it is placed. The positioning pin 23 is used to further position the pipe sheet metal part 61 placed in the pipe fitting installation groove 22, so that the part of the pipe sheet metal part 61 to be flanged is aligned vertically with the flange hole 24.

[0030] By cooperating with the pipe fitting mounting groove 22 and the positioning pin 23, the pipe sheet metal part 61 can be quickly and roughly positioned first, and then accurately corrected. This reduces the number of times the position needs to be adjusted repeatedly during assembly and ensures that the hole to be flanged and the flanging hole 24 are stably aligned, thereby improving the positional accuracy of subsequent flanging operations.

[0031] Furthermore, a flanging fixture pressure plate 25 is detachably mounted on the upper surface of the flanging hole 24 via bolts. The interior of the flanging fixture pressure plate 25 is in contact with the surface of the pipe sheet metal part 61. When the pipe sheet metal part 61 is being flanged, the flanging fixture pressure plate 25 presses the pipe sheet metal part 61 tightly onto the flanging fixture base plate 21. After the flanging fixture base plate 21 and the flanging fixture pressure plate 25 are engaged, the pipe sheet metal part 61 can be stably clamped between them, making it less likely for the pipe sheet metal part 61 to shift, warp, or jump locally during manual stamping. This allows the force of the punch 45 to be more concentrated on the area to be flanged, avoiding the flanging position deviation caused by workpiece offset, and helping to ensure the uniformity of the flanging edge formation.

[0032] Meanwhile, the flanged tooling pressure plate 25 adopts a detachable structure, which also makes it easy to replace the sheet metal parts 61 of different specifications of pipelines, thus improving the adaptability of the tooling.

[0033] Furthermore, the flange positioning assembly includes a tooling working base plate 31 fitted inside the positioning support member 12. The upper surface of the tooling working base plate 31 is provided with an irregular support surface 32 for supporting the track sheet metal part 61. The tooling working base plate 31 is provided with a relief flange hole 33 corresponding to the flange hole 24. The periphery of the relief flange hole 33 is provided with annular bearing steps 34.

[0034] After the tooling base plate 31 is set inside the positioning support 12, it can obtain overall support through the positioning support 12; the irregular support surface 32 is adapted to the bottom surface of the flanging tooling base plate 21 to provide close support for the flanging tooling base plate 21. Through the cooperation between the positioning support 12, the tooling base plate 31 and the irregular support surface 32, the flanging tooling base plate 21 can obtain a larger support area when under force, avoiding local suspension or uneven support, thereby improving the overall stress stability of the tooling during the flanging operation.

[0035] The clearance flange hole 33 and the flange hole 24 are arranged vertically and vertically to provide clearance space for the deformation of the hole edge material during the flange process. The annular bearing step 34 is arranged around the clearance flange hole 33 to form annular support for the sheet material around the hole to be flanged. Through the cooperation of the clearance flange hole 33 and the annular bearing step 34, the hole edge material can be plastically deformed smoothly when the punch 45 is pressed down, and the material is avoided from being blocked due to the lack of clearance space at the bottom. On the other hand, the annular bearing step 34 can support the area around the hole, preventing the entire sheet around the hole from sinking along with the punch 45 during the flanging process. This can reduce sheet collapse, bulging and corrugation deformation, improve the flatness of the flanging edge and the structural stability of the flanging root.

[0036] In this embodiment, lateral side stops 35 are symmetrically fixedly installed on the top surface of the tooling base plate 31. The lateral side stops 35 fit the outer contours of both sides of the flange tooling base plate 21 and are used to laterally guide and initially position the flange tooling base plate 21.

[0037] The flanging fixture base plate 21 and the fixture working base plate 31 are detachably installed via a pin. The side stop block 35 can automatically guide the operator when placing the flanging fixture base plate 21, so that the flanging fixture base plate 21 can quickly move towards the preset position. The pin further limits the relative position between the flanging fixture base plate 21 and the fixture working base plate 31.

[0038] By using the lateral stop block 35 and the pin, not only can the requirements for manual alignment accuracy be reduced when a single person is clamping the fixture, and the tooling installation time be shortened, but the flange tooling base plate 21 can also maintain a relatively consistent position reference after each insertion, thereby improving the repeatability of positioning accuracy when multiple workpieces are processed continuously.

[0039] Furthermore, the manual flanging punch assembly includes a clamping support 41 rotatably mounted on the top surface of the work platform 11, a hand-held force-applying handle 42 rotatably mounted inside the top surface of the clamping support 41, a guide punch 43 slidably mounted inside the clamping support 41, a punch 45 detachably mounted at the bottom of the guide punch 43, and a punching baffle 46 fixedly mounted on the top surface of the work platform 11 to limit the downward depth of the punch 45.

[0040] The clamping support 41 provides vertical sliding guidance for the guide rod 43, and the hand-held force-applying handle 42 applies downward pressure to the guide rod 43. Through the cooperation of the clamping support 41 and the guide rod 43, the guide rod 43 can move up and down along a relatively fixed path, avoiding swaying when the punch 45 is held directly by hand.

[0041] By combining the hand-held force-applying handle 42 with the guide punch 43, manual force can be converted into stable axial downward pressure, allowing the punch 45 to enter the flanging hole 24 more smoothly for flanging. This helps to reduce the problem of unilateral force on the edge of the hole caused by the punch 45 being skewed, and improves the uniformity of flanging.

[0042] Furthermore, a return spring 44 is sleeved on the outer surface of the guide rod 43, and a support seat is installed on one side of the top of the clamping support 41 to support the hand-held force-applying handrail 42. The top of the guide rod 43 is rotatably mounted on the bottom surface of the hand-held force-applying handrail 42. A positioning ring is provided on the outer surface of the guide rod 43, and the return spring 44 is provided between the positioning ring and the clamping support 41.

[0043] The support base provides a stable fulcrum for the hand-held force-applying handle 42, making its swinging and pressing process smoother. The rotational connection between the hand-held force-applying handle 42 and the guide punch 43 allows the pressing action to be smoothly converted into the linear motion of the guide punch 43. The return spring 44 is compressed when the operator presses down, and pushes the guide punch 43 and the punch 45 to automatically return to their original positions after the operator releases the handle. Through the cooperation between the support base, the hand-held force-applying handle 42, the guide punch 43, the positioning ring, and the return spring 44, the operator's labor intensity can be reduced on the one hand, and the punch 45 can automatically return to its initial position after each flanging, which is convenient for continuously completing the processing of multiple flanging holes 24, thereby improving the overall work efficiency.

[0044] The punch 45 is detachably installed at the bottom of the guide punch 43, and its position corresponds to the position of the flanging hole 24. The punch 45 cooperates with the flanging hole 24 on the flanging fixture base plate 21 to complete the manual punching and flanging operation of the pipe sheet metal part 61. The punching baffle 46 is fixedly installed on the top surface of the work platform 11 and is located at the limit position of the downward path of the punch 45.

[0045] By engaging the punch 45 with the flanging hole 24, the punch 45 can be used to specifically punch and form the edge of the flanging hole. By engaging the punch 45 with the punching baffle 46, the maximum downward depth of the punch 45 can be limited. This limiting relationship can prevent the operator from pressing the punch 45 too deeply due to excessive force, thereby avoiding excessive flanging height, local tearing at the root of the flanging, or excessive thinning of the material. It also helps to maintain the consistency of the flanging height under manual operation conditions and improves the dimensional stability during subsequent welding and assembly.

[0046] The inspection fixture assembly includes a flange inspection fixture 51 disposed above the work platform 11. The flange inspection fixture 51 has inspection holes 52 through it on its surface and a positioning groove 53 through it inside. The size and number of the inspection holes 52 correspond one-to-one with the flange holes 24. The inspection holes 52 are connected to the positioning groove 53. The positioning groove 53 is used to limit the position of the pipe sheet metal parts 61 during inspection operations.

[0047] Furthermore, the size of the inspection hole 52 is the same as the flange size of the pipe sheet metal part 61 after the flange operation. The inspection hole 52 is used to position and inspect the flange size of the pipe sheet metal part 61. Through the cooperation between the positioning groove 53 and the pipe sheet metal part 61, the position of the workpiece during inspection can be constrained first, so that the flanged part to be inspected is accurately aligned with the inspection hole 52. Then, through the cooperation between the inspection hole 52 and the flanged part, it can be quickly determined whether the flange size is qualified.

[0048] If the flange height exceeds the requirements, the excessively high part can be adjusted and guided by the flange inspection fixture 51. Thus, the cooperation between the positioning groove 53 and the inspection hole 52 not only improves the flange inspection efficiency, but also ensures that the adjustment process always revolves around the same inspection benchmark, thereby further guaranteeing the dimensional accuracy after flange and the subsequent welding compatibility.

[0049] The overall working process and principle of the above embodiments are as follows: First, the positioning support 12 is detachably installed on the top surface of the work platform 11. Then, the tooling work base plate 31 is fitted inside the positioning support 12. Since the positioning support 12 forms a basic support for the tooling work base plate 31, and the irregular support surface 32 provided on the tooling work base plate 31 is used to support the flanging tooling base plate 21, a stable support foundation can be established before the flanging operation begins. This allows the load generated during subsequent manual stamping to be transferred to the work platform 11 through the flanging tooling base plate 21, the tooling work base plate 31, and the positioning support 12, thereby avoiding local suspended stress and helping to maintain the overall stability of the tooling.

[0050] Subsequently, the flange base plate 21 is placed on the tooling working base plate 31. Under the guidance of the lateral side stop block 35, the flange base plate 21 automatically moves to the side along the preset direction and is detachably connected to the tooling working base plate 31 through the pin.

[0051] By cooperating with the side stop 35 and the pin, the base plate 21 of the flanging fixture can maintain a relatively consistent position reference each time it is installed, thereby reducing the time for manual repeated alignment, making it easier for a single person to quickly complete the assembly of the flanging fixture, and also helping to improve the repeatability of positioning accuracy when multiple workpieces are processed continuously.

[0052] Next, the sheet metal part 61 to be processed is placed in the pipe mounting groove 22 on the base plate 21 of the flanging fixture, so that the outline of the sheet metal part 61 fits the pipe mounting groove 22. The sheet metal part 61 is further positioned by the positioning pin 23, so that the part of the sheet metal part 61 to be flanged corresponds one-to-one with the flanging hole 24.

[0053] The combination of the pipe fitting mounting groove 22 and the positioning pin 23 can first complete the rapid rough positioning of the pipe sheet metal part 61, and then complete the precise correction. This not only makes it easier for the operator to quickly place the workpiece, but also ensures that the flanged part and the flanged hole 24 are aligned, improving the positional accuracy of subsequent flanged operations.

[0054] After the pipe sheet metal part 61 is positioned, the flange tooling pressure plate 25 is installed above the flange hole 24 and fixed to the flange tooling base plate 21 with bolts, so that the flange tooling pressure plate 25 presses the upper surface of the pipe sheet metal part 61.

[0055] After the flanging fixture base plate 21 and the flanging fixture pressure plate 25 cooperate with each other, the pipe sheet metal part 61 can be stably clamped between the two, thereby preventing the workpiece from moving, lifting or shifting due to uneven force during manual flanging. This allows the punching force of the punch 45 to be applied more concentratedly to the hole to be flanged, which is beneficial to improving the uniformity of the flanging edge formation and the stability of the flanging position.

[0056] After the workpiece is clamped, the operator holds the force-applying handle 42 and applies downward force. Holding the force-applying handle 42, the operator drives the guide punch 43 to slide downward along the inside of the clamping support 41, thereby pushing the punch 45 to move downward. When the punch 45 enters the flanging hole 24 on the flanging fixture base plate 21, the punch 45 performs punching and flanging on the hole edge of the corresponding hole position of the pipe sheet metal part 61. Since the clamping support 41 provides guiding constraint to the guide punch 43, the punch 45 can move along a relatively stable path during the pressing process, avoiding swaying when manually struck directly.

[0057] Meanwhile, the clearance flange hole 33 on the tooling base plate 31 provides clearance space for the plastic deformation of the hole edge material, while the annular bearing step 34 around it supports the hole periphery plate material, so that the hole edge material will not cause the entire hole periphery area to sink when it is turned up for forming. Thus, the cooperation between the punch 45, the clearance flange hole 33 and the annular bearing step 34 can reduce the collapse, bulging or corrugation of the hole periphery plate material while ensuring the smooth forming of the flange, and improve the flatness of the flange contour and the stability of the flange root.

[0058] When the guide punch 43 continues to descend to the predetermined position, the descent depth of the punch 45 is limited by the stamping baffle 46, thereby keeping the flanging depth within the preset range. By limiting the punch 45 with the stamping baffle 46, it is possible to avoid the operator from applying too much force, causing the flanging to be too deep, the flanging height to be too high, or the material to be partially torn. This is beneficial to maintaining the consistency of the flanging height between different flanging holes 24 under manual operation conditions and improving the dimensional stability during subsequent welding and assembly.

[0059] After a flanging action is completed, the operator releases the force-applying handle 42. Under the elastic action of the return spring 44, the guide punch 43 automatically returns to its original position, and drives the punch 45 to disengage from the flanging hole 24 and return to its initial position. The cooperation between the return spring 44 and the guide punch 43 enables the punch 45 to automatically reset after each flanging, which makes it easier for the operator to continue to process other flanging holes 24 continuously, reducing manual repetitive lifting actions, improving overall work efficiency and reducing labor intensity.

[0060] After one flanging hole 24 is processed, the operator can adjust the working position or the corresponding flanging hole 24 according to the distribution of the parts to be flanged on the pipe sheet metal part 61, and repeat the above-mentioned pressing and flanging action until all the parts to be flanged on the pipe sheet metal part 61 are processed. Since the flanging tool base plate 21, the tooling working base plate 31 and the manual flanging punch assembly maintain a relatively fixed positional relationship throughout the process, multiple flanging holes 24 can be flanged under the same stable reference, which is beneficial to improve the consistency between the flanging parts of the entire pipe sheet metal part 61.

[0061] After all the flanging operations are completed, remove the flanging fixture pressure plate 25 and take the flanged pipe sheet metal part 61 out of the flanging fixture base plate 21.

[0062] Subsequently, the flanged pipe sheet metal part 61 is fitted with the flange inspection fixture 51, so that the corresponding part of the pipe sheet metal part 61 is fitted and positioned with the positioning groove 53, and the flanged part is aligned with the inspection hole 52. Through the fit between the positioning groove 53 and the pipe sheet metal part 61, the position of the workpiece during inspection can be restricted to avoid the workpiece being skewed. Then, through the fit between the inspection hole 52 and the flanged part, the flanged dimensions can be quickly inspected.

[0063] If the flanged part can be smoothly matched with the inspection hole 52, it means that the flanged size meets the requirements. If the flanged height exceeds the requirements, the flanged inspection fixture 51 can be used as a guide reference to adjust the excessively high part so that the final flanged size meets the welding requirements, thereby ensuring the flanged quality and subsequent welding compatibility.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flanged tooling device for welding sheet metal parts of pipelines, comprising a working platform (11), wherein a positioning support (12) is detachably mounted on the top surface of the working platform (11), characterized in that: It also includes flanging operation fixtures, flanging positioning components, manual flanging punch components, inspection fixture components, and pipe sheet metal parts (61) used to complete the flanging operation. The flanging tooling is used as a flanging mold for pipe sheet metal parts (61) to snap and install the pipe sheet metal parts (61). The flanging tooling includes a flanging tooling base plate (21). The top surface of the flanging tooling base plate (21) is provided with a pipe installation groove (22). The top surface of the flanging tooling base plate (21) is provided with a positioning pin (23). The interior of the flanging tooling base plate (21) is provided with multiple flanging holes (24). The flange positioning assembly includes a tooling working base plate (31) fitted inside the positioning support (12). The upper surface of the tooling working base plate (31) is provided with an irregular support surface (32) for supporting the track sheet metal part (61). The tooling working base plate (31) is provided with a relief flange hole (33) corresponding to the flange hole (24) through the interior. The periphery of the relief flange hole (33) is provided with an annular pressure step (34). The manual flanging punch assembly includes a clamping support (41) rotatably mounted on the top surface of the work platform (11), a hand-held force-applying handle (42) rotatably mounted inside the top surface of the clamping support (41), a guide punch (43) slidably mounted inside the clamping support (41), a punch (45) detachably mounted at the bottom of the guide punch (43), and a punching baffle (46) fixedly mounted on the top surface of the work platform (11) to limit the downward depth of the punch (45); The inspection fixture assembly includes a flange inspection fixture (51) set above the work platform (11). The flange inspection fixture (51) has an inspection hole (52) through it on its surface and a positioning groove (53) through it inside. The inspection fixture assembly is used to inspect the flange height of the flanged pipe sheet metal parts (61) and to trim and guide the excessively high parts.

2. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: The upper surface of the flange tooling base plate (21) is detachably mounted with a flange tooling pressure plate (25) by bolts. The shape of the pipe fitting installation groove (22) is adapted to the pipe sheet metal part (61) and is used to initially position the pipe sheet metal part (61). The positioning pin (23) further positions the pipe sheet metal part (61) placed inside the pipe fitting installation groove (22).

3. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: The inside of the flange tooling pressure plate (25) is in contact with the surface of the pipe sheet metal part (61) to prevent the pipe sheet metal part (61) from moving when the flange operation is performed.

4. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: The top surface of the tooling base plate (31) is symmetrically fixed with side-mounted blocks (35). The side-mounted blocks (35) fit the outer contours of both sides of the flange tooling base plate (21) and are used to perform preliminary positioning of the pipe sheet metal parts (61). The flange tooling base plate (21) and the tooling base plate (31) are detachably installed through a pin.

5. A flanged tooling device for welding sheet metal parts of pipelines according to claim 4, characterized in that: The irregular support surface (32) is used to support the flanging fixture base plate (21), and the irregular support surface (32) is adapted to the bottom surface of the flanging fixture base plate (21). The position of the annular pressure step (34) corresponds to the flanging hole (24) one by one. The annular pressure step (34) is used to support the sheet metal around the hole to be flanged during the flanging process. The side stop block (35) facilitates automatic positioning when a single person places the flanging fixture base plate (21).

6. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: A return spring (44) is sleeved on the outer surface of the guide punch (43). A support seat is installed on one side of the top of the clamping support (41) to support the hand-held force-applying handrail (42). The top of the guide punch (43) is rotatably mounted on the bottom surface of the hand-held force-applying handrail (42). A positioning ring is provided on the outer surface of the guide punch (43). The return spring (44) is located between the positioning ring and the clamping support (41).

7. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: The position of the punch (45) corresponds to the position of the flange hole (24). The punch (45) cooperates with the flange hole (24) on the flange tool base plate (21) to complete the manual stamping operation of the pipe sheet metal part (61).

8. The flange-flanging fixture for welding sheet metal parts of pipelines according to claim 1, characterized in that: The size and number of inspection holes (52) correspond one-to-one with the flange holes (24).

9. A flanged tooling device for welding sheet metal parts of pipelines according to claim 1, characterized in that: The inspection hole (52) is connected to the positioning groove (53), which is used to limit the position of the pipe sheet metal part (61) during inspection.

10. A flanged tooling device for welding sheet metal parts of pipelines according to claim 1, characterized in that: The size of the inspection hole (52) is the same as the flange size of the pipe sheet metal part (61) after the flange operation. The inspection hole (52) is used to locate and inspect the flange size of the pipe sheet metal part (61).

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