Tool clamp for flange machining

Abstract

The invention relates to the technical field of flange machining, in particular to a tool clamp for flange machining, which comprises a fixed seat, a plurality of support frames are fixedly mounted at the lower end of the fixed seat, a support device is mounted in the middle of the upper end of the fixed seat, a leveling device is mounted on the support device, and a clamping device is connected between the leveling device and the support device; socket welding flanges of different sizes can be clamped and fixed, the machining efficiency of the socket welding flanges is guaranteed, the socket welding flanges are leveled in an annular knocking mode, and therefore when the socket welding flanges are in an inclined state, the socket welding flanges can be fixed, and the machining efficiency of the socket welding flanges is guaranteed. The end, inclining downwards, of the socket welding flange can recover to the horizontal arrangement state under the action of knocking force, the machining precision of the flange is guaranteed, meanwhile, the corner of a step-shaped structure of an inner hole of the socket welding flange can be clamped and fixed in a multi-point mode, the stability of clamping the flange is improved, and the machining efficiency is improved. And the flange is prevented from rotating when being machined.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, in particular to a tooling fixture for flange processing. Background Art

[0002] Flange is a connecting disc-shaped part used in pipeline systems, mechanical equipment, etc. Its main function is to facilitate the connection, sealing and disassembly between pipelines and between pipelines and equipment. Socket welding flange is a commonly used flange, such as Figure 7 As shown, the inner hole of the socket welding flange is set to be stepped, so that the end of the pipe can be inserted into the flange ring step, and the pipe end and the outer side can be welded to the flange, thereby having better connection strength and sealing.

[0003] Socket welding flanges are usually made of casting, and the surface of the socket welding flange supported by casting may have defects such as sand holes and pores. Since the flange is a precision part, the socket welding flange needs to be polished and processed after casting to ensure its dimensional accuracy and surface quality. When finishing the socket welding flange, a tooling fixture is required to clamp and fix the socket welding flange to increase its stability during processing.

[0004] Regarding the socket welding flange tooling fixture, the utility model patent with publication number CN219704744U discloses a flange processing fixture. The fixture sets a detachable limit column and installs the corresponding limit column according to the flange size. The flange center hole is sleeved on the outside of the detachable limit column to limit the flange. The two arc-shaped clamps are driven by a bidirectional threaded rod to squeeze and fix the flange. Rubber strips are set on the inner sides of the two arc-shaped clamps to increase the stability of the flange when clamping and prevent the flange from rotating during processing.

[0005] The above technical solution has the following problems when clamping and fixing the flange: 1. When the above technical solution is used to clamp and fix socket welding flanges of different sizes, the clamping areas are different, and there may be too few clamping points of the two arc-shaped clamps on the socket welding flange, resulting in the socket welding flange still rotating during processing, and there may still be a problem of not being able to stably clamp the socket welding flange; 2. When clamping socket welding flanges of different sizes, the matching limit column needs to be replaced each time, which affects the processing efficiency of the socket welding flange. Summary of the invention

[0006] In order to solve the above technical problems, the present invention adopts the following technical scheme: a tooling fixture for flange processing, comprising a fixed seat, a plurality of support frames are fixedly installed at the lower end of the fixed seat, a supporting device is installed at the middle of the upper end of the fixed seat, a leveling device is installed on the supporting device, and a clamping device is connected between the leveling device and the supporting device; the supporting device comprises a supporting tube fixedly installed at the middle of the upper end of the fixed seat, the lower end of the supporting tube is set as a cylindrical structure, and the upper end of the supporting tube is set as a truncated cone structure, a clamping mechanism for making the lower end of the socket welding flange abut against the outer side of the truncated cone structure of the supporting tube is installed on the supporting tube, and the cylindrical structure of the supporting tube is provided with a plurality of square holes evenly arranged in the circumferential direction; the leveling device comprises a square rod slidably installed in the square hole up and down, and a plurality of An adjusting mechanism for adjusting the height of the square rod is commonly installed on the opposite sides of the square rod, and an adjusting sleeve is commonly fixedly installed on the back sides of the multiple square rods, and the adjusting sleeve is arranged on the outside of the supporting tube, and a transmission sleeve is installed on the lower outer side of the adjusting sleeve through an annular electric slider assembly, and a plurality of circumferentially evenly distributed leveling plates are installed on the outer side of the transmission sleeve through a knocking mechanism, and the knocking mechanism is used to drive the leveling plates to knock on the lower side of the socket welding flange; the clamping device includes a synchronous plate that is slidably installed in the supporting tube up and down, and the lower end of the synchronous plate is connected to the adjusting mechanism through a plurality of circumferentially evenly arranged connecting rods, and the upper end of the synchronous plate is installed with a plurality of circumferentially evenly arranged triangular-structured clamping blocks through a matching mechanism, and the matching mechanism is used to drive the clamping blocks to clamp and fix the socket welding flange.

[0007] Preferably, the adjustment mechanism includes an adjustment plate fixedly mounted on opposite sides of the plurality of square rods, the upper end of the adjustment plate is fixedly connected to the lower ends of the plurality of connecting rods, an adjustment screw is rotatably mounted on the lower end of the adjustment plate, and the lower end of the adjustment screw is connected to the fixing seat by threaded engagement.

[0008] Preferably, the knocking mechanism includes a plurality of circumferentially evenly arranged square plates fixedly mounted on the outside of the transmission sleeve, a square spring rod is slidably mounted on the upper end of the square plate, and the square spring rod slides up and down through the lower end of the square plate, the upper ends of the square spring rods are fixedly connected to their corresponding leveling plates, and round rods are fixedly mounted on opposite sides of the plurality of square spring rods.

[0009] Preferably, a connecting sleeve is provided on the middle fixed sleeve outside the adjusting sleeve, and a plurality of circumferentially evenly arranged downward pressing blocks are fixedly mounted on the lower end of the connecting sleeve, and the lower end of the downward pressing block is arranged as an inclined surface for driving the round rod to move downward.

[0010] Preferably, a plurality of positioning holes evenly arranged up and down are opened on the opposite sides of the plurality of square spring rods, and a fixing plate is fixedly installed on the opposite sides of the upper ends of the plurality of square plates, and a pin is detachably installed on the fixing plate, and the pin is used to be inserted into the positioning hole to lock the square spring rod.

[0011] Preferably, a plurality of circumferentially evenly arranged clearance holes are provided on the outer side of the support cylinder truncated cone structure, two symmetrically arranged inclined grooves are provided in the clearance holes, and the inclination angle of the inclined grooves is consistent with the inclination angle of the generatrix of the support cylinder truncated cone structure.

[0012] Preferably, the clamping mechanism includes a circular plate distributed on the upper side of the inner part of the support tube, a threaded rod is rotatably mounted on the upper end of the circular plate, and the threaded rod and the top end of the support tube are connected by threaded cooperation, and a plurality of circumferentially evenly distributed transmission blocks are mounted on the outer side of the circular plate through a multi-stage telescopic rod, the transmission blocks are all arranged in the give way holes, and the transmission blocks are slidably connected to their corresponding inclined grooves, and clamping plates are hinged on the back sides of the plurality of transmission blocks, and torsion springs are installed at the hinges between the clamping plates and the transmission blocks.

[0013] Preferably, the mating mechanism includes an extension spring rod slidably installed up and down at the lower end of the synchronization plate, and a plurality of circumferentially evenly distributed mating rods are fixedly installed at the lower end of the extension spring rod, and the back sides of the plurality of mating rods all pass through the corresponding square holes of the support tube and slide up and down through the adjustment sleeve.

[0014] Preferably, a plurality of lower pressure plates of L-shaped structure evenly arranged in the circumferential direction are fixedly mounted on the upper end of the transmission sleeve, and the lower side of the horizontal section of the lower pressure plate is provided as an inclined surface for driving the matching rod to move downward.

[0015] Preferably, the upper end of the extension spring rod slides up and down, passes through the synchronization plate and is fixedly connected to the transmission plate, and a plurality of circumferentially evenly distributed synchronization blocks are installed on the outside of the transmission plate through a synchronization rod with a multi-stage telescopic structure. The synchronization blocks are all arranged in the give way holes, and the synchronization blocks are also slidably connected to their corresponding inclined grooves. An inclined rod is hinged on the outside of the plurality of synchronization blocks, and one end of the inclined rod away from the synchronization block is tilted downward and hinged to the inclined surface of the corresponding clamping block, and torsion springs are installed at the hinges between the inclined rod, the synchronization block and the clamping block.

[0016] The beneficial effects of the present invention are: 1. The present invention drives the surfaces corresponding to the two right-angle sides of multiple clamping blocks to clamp downward at the stepped corners of the inner holes of socket welding flanges of different sizes by setting a matching mechanism, thereby realizing multi-point clamping and fixing of the stepped corners of the inner holes of socket welding flanges of different sizes, thereby preventing the socket welding flange from rotating during processing and increasing the clamping stability of the socket welding flange.

[0017] 2. The present invention provides internal support for the socket welding flange by arranging a support tube, and the upper end of the support tube is arranged as a truncated cone structure, so that the socket welding flanges of different sizes can be internally supported to ensure the processing efficiency of the socket welding flange. At the same time, the present invention provides pins and positioning holes to cooperate with the leveling plate to stably support the lower end of the socket welding flange, so that the leveling plate and the clamping block cooperate to stably clamp the socket welding flange horizontally.

[0018] 3. The present invention sets a correction plate to knock the socket weld flange upward in a circular knocking manner, so that when the socket weld flange is in a deflected state, the end of the socket weld flange that is deflected downward can be restored to a horizontal arrangement state under the action of the knocking force. At the same time, the present invention sets a clamping mechanism to clamp the end of the socket weld flange that is deflected upward, so that when the correction plate knocks the end of the socket weld flange that is deflected upward, the socket weld flange will not move upward under the clamping action of the clamping mechanism, thereby ensuring that the socket weld flange can be corrected to a horizontal state, thereby ensuring the processing accuracy of the socket weld flange.

[0019] 4. After the leveling of the socket welding flange is completed, the present invention can accurately determine whether the socket welding flange is in a horizontal state by observing the positions of the positioning holes corresponding to the pins and comparing whether the positions of multiple pins and their corresponding positioning holes are consistent, thereby further ensuring the processing accuracy of the socket welding flange.

[0020] 5. The present invention adjusts the initial position of the leveling plate by providing an adjustment mechanism to prevent the leveling plate from excessively hitting the socket welding flange upwards under the action of the square spring rod, causing secondary deflection, thereby ensuring that the socket welding flange is always in a horizontal state after leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 It is a cross-sectional view of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the leveling device of the present invention.

[0025] Figure 4 The present invention Figure 3 Enlarged view of point A.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the supporting device and the clamping device after a part of the supporting tube is cut away.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the clamping device and the leveling device after the support tube is partially cut away.

[0028] Figure 7 It is a cutaway view of a socket welding flange.

[0029] Figure 8 It is a front view of the leveling plate of the present invention supporting the socket welding flange in a horizontal state.

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the clamping block of the present invention clamping and fixing the stepped structure of the socket welding flange.

[0031] Fig.10 It is a structural schematic diagram of the threaded rod of the present invention when it is electrically adjusted.

[0032] Figure numerals: 1, fixed seat; 2, supporting device; 21, supporting cylinder; 22, tightening mechanism; 221, circular plate; 222, threaded rod; 223, multi-stage telescopic rod; 224, transmission block; 225, tightening plate; 23, clearance hole; 24, inclined groove; 3, leveling device; 31, square rod; 32, adjusting mechanism; 321, adjusting plate; 322, adjusting screw; 33, adjusting sleeve; 331, connecting sleeve; 332, lower pressing block; 34, annular electric slider assembly; 3 5. Transmission sleeve; 351. Lower pressure plate; 36. Knocking mechanism; 361. Square plate; 362. Square spring rod; 363. Round rod; 364. Positioning hole; 365. Fixing plate; 366. Pin; 37. Leveling plate; 4. Clamping device; 41. Synchronous plate; 42. Connecting rod; 43. Matching mechanism; 431. Extending spring rod; 432. Matching rod; 433. Transmission plate; 434. Synchronous rod; 435. Synchronous block; 436. Oblique rod; 44. Clamping block. DETAILED DESCRIPTION

[0033] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0034] See also Figure 1 and Figure 8 A tooling fixture for flange processing includes a fixed seat 1, a plurality of support frames are fixedly installed at the lower end of the fixed seat 1, a support device 2 is installed in the middle of the upper end of the fixed seat 1, a leveling device 3 is installed on the support device 2, and a clamping device 4 is connected between the leveling device 3 and the support device 2.

[0035] The present invention can clamp and fix socket welding flanges of different sizes, thereby ensuring the processing efficiency of the socket welding flanges. The present invention uses a circular knocking method to level the socket welding flange, thereby preventing the flange from being skewed and ensuring the processing accuracy of the flange. At the same time, the present invention can also perform multi-point clamping and fixing on the corners of the stepped structure of the inner hole of the socket welding flange, thereby increasing the stability of the flange clamping and preventing the flange from rotating during flange processing.

[0036] Specifically, firstly, the socket welding flange is placed on the supporting device 2, which can support the inner holes of the socket welding flanges of different sizes, and then the leveling device 3 is controlled to knock the lower end of the socket welding flange upward in a circular knocking manner. When the socket welding flange is in a deflected state, the leveling device 3 can apply an upward moving force to the end of the socket welding flange that is deflected downward, so that it can be restored to a horizontal arrangement state under the action of the knocking force, and at the same time, the leveling device 3 drives the clamping device 4 to extend the socket welding method. The inner side of the inner hole of the flange is used to align the socket welding flange and the supporting device 2 in the center. After the leveling of the socket welding flange is completed, the leveling device 3 is controlled to support the lower end of the socket welding flange, and the clamping device 4 is controlled to clamp downward at the stepped corner of the inner hole of the socket welding flange, so that the clamping device 4 can clamp and fix the socket welding flange at multiple points. When the socket welding flange needs to be taken out, the clamping device 4 is controlled to no longer clamp at the stepped corner of the inner hole of the socket welding flange, so that the socket welding flange can be taken out from the supporting device 2.

[0037] See also Figure 1 and Figure 2 The supporting device 2 includes a supporting tube 21 fixedly installed in the middle of the upper end of the fixing seat 1. The lower end of the supporting tube 21 is set as a cylindrical structure, and the upper end is set as a truncated cone structure. The supporting tube 21 is installed with a tightening mechanism 22 for making the lower end of the socket welding flange abut against the outer side of the truncated cone structure of the supporting tube 21. The cylindrical structure of the supporting tube 21 is provided with a plurality of square holes evenly arranged in the circumferential direction.

[0038] See also Figure 1-Figure 3 The leveling device 3 includes a square rod 31 that is slidably installed in the square hole up and down, and an adjusting mechanism 32 for adjusting the height of the square rod 31 is commonly installed on the opposite sides of the multiple square rods 31. An adjusting sleeve 33 is commonly fixedly installed on the opposite sides of the multiple square rods 31, and the adjusting sleeve 33 is sleeved on the outside of the support tube 21. A transmission sleeve 35 is installed on the lower part of the outer side of the adjusting sleeve 33 through an annular electric slider assembly 34. A plurality of circumferentially evenly distributed leveling plates 37 are installed on the outer side of the transmission sleeve 35 through a knocking mechanism 36. The knocking mechanism 36 is used to drive the leveling plate 37 to knock on the lower side of the socket welding flange.

[0039] It should be noted that the annular electric slider assembly 34 of the present invention adopts the existing technology. The annular electric slider assembly 34 includes an annular slide rail and a plurality of circumferentially evenly arranged electric sliders installed on the sliding rail, wherein the annular slide rail fixing sleeve is arranged at the lower outer part of the adjustment sleeve 33, and the plurality of electric sliders are fixedly installed on the inner side of the transmission sleeve 35, and the transmission sleeve 35 is driven to rotate by starting the electric slider.

[0040] The supporting device 2 is used to support the inner holes of socket welding flanges of different sizes, and the leveling device 3 is used to level the socket welding flanges; specifically, the inner hole of the socket welding flange is first sleeved on the conical structure of the supporting tube 21, so that the conical structure of the supporting tube 21 can provide preliminary support for the inner holes of socket welding flanges of different sizes, and then the clamping mechanism 22 is controlled to clamp on the upper end of the socket welding flange, so that the lower end of the socket welding flange is against the outer side of the conical structure of the supporting tube 21, and then the adjusting mechanism 32 is controlled to adjust the position of the adjusting sleeve 33 up and down through the square rod 31 according to the position of the socket welding flange, so that the adjusting sleeve 33 finally drives the leveling plate 37 to move through the annular electric slider assembly 34 and the transmission sleeve 35, thereby realizing the adjustment of the upper and lower positions of the leveling plate 37.

[0041] Start the annular electric slider assembly 34 to drive multiple adjustment plates 37 to rotate synchronously clockwise through the transmission sleeve 35 and the knocking mechanism 36. At the same time, the knocking mechanism 36 drives the adjustment plate 37 to continuously knock the lower end of the socket welding flange upward. When the socket welding flange is in a skewed state, the end of the socket welding flange that is deflected downward is subjected to the upward knocking force of the adjustment plate 37, so that it can be restored to a horizontal arrangement state under the action of the knocking force, and the clamping mechanism 22 can be clamped on the end of the socket welding flange that is deflected upward, so that when the adjustment plate 37 knocks the end of the socket welding flange that is deflected upward upward, the socket welding flange will not move upward under the clamping action of the clamping mechanism 22, thereby ensuring that the socket welding flange can be corrected to a horizontal state. When the socket welding flange needs to be removed, the clamping mechanism 22 is controlled to no longer be clamped on the upper end of the socket welding flange, so that the socket welding flange can be removed from the conical structure of the support tube 21.

[0042] See also Figure 1 , Figure 2 and Fig. 9 The clamping device 4 includes a synchronous plate 41 that is slidably installed in the support tube 21 up and down. The lower end of the synchronous plate 41 is connected to the adjustment mechanism 32 through a plurality of circumferentially evenly arranged connecting rods 42. The upper end of the synchronous plate 41 is installed with a plurality of circumferentially evenly arranged triangular-structured clamping blocks 44 through a matching mechanism 43. The matching mechanism 43 is used to drive the clamping block 44 to clamp and fix the socket welding flange; wherein, the surfaces corresponding to the two right-angled sides of the clamping block 44 are both set to rubber material, and initially, one of the right-angled sides of the clamping block 44 is arranged vertically.

[0043] See also Figure 2 The adjustment mechanism 32 includes an adjustment plate 321 fixedly installed on the opposite sides of the multiple square rods 31. The upper end of the adjustment plate 321 is fixedly connected to the lower ends of the multiple connecting rods 42. The lower end of the adjustment plate 321 is rotatably installed with an adjustment screw 322. The lower end of the adjustment screw 322 is connected to the fixed seat 1 through threaded cooperation.

[0044] The clamping device 4 is used for multi-point clamping at the stepped corners of the inner hole of the socket welding flange, and the adjusting mechanism 32 is used to adjust the position of the adjusting sleeve 33; specifically, when the inner hole of the socket welding flange is sleeved on the truncated cone structure of the support tube 21, the adjusting plate 321 is driven to move downward by screwing the adjusting screw 322, so that the adjusting plate 321 drives the adjusting sleeve 33 to move through the square rod 31, thereby adjusting the position of the adjusting sleeve 33. At the same time, the adjusting plate 321 drives the synchronous plate 41 to move downward through the connecting rod 42, so that the synchronous plate 41 drives the clamping block 44 to move to the corresponding position of the stepped structure of the inner hole of the socket welding flange through the matching mechanism 43.

[0045] When the socket welding flange is in a horizontal state, the control matching mechanism 43 drives the multiple clamping blocks 44 to move outward synchronously, so that the corresponding surfaces of the two right-angled sides of the clamping blocks 44 are clamped downward at the stepped corners of the inner hole of the socket welding flange (such as Fig. 9 As shown), the surfaces corresponding to the two right-angled sides of the clamping block 44 are both set to rubber material, so that the clamping block 44 can fit tightly with the stepped corners of the inner hole of the socket welding flange, and increase the friction force with the stepped corners of the inner hole of the socket welding flange. At the same time, the clamping block 44 is provided with multiple points, thereby realizing multi-point clamping and fixing of the stepped corners of the inner hole of the socket welding flange, increasing the clamping stability of the socket welding flange and preventing it from rotating.

[0046] See also Figure 2 and Figure 3 The knocking mechanism 36 includes a plurality of circumferentially evenly arranged square plates 361 fixedly mounted on the outside of the transmission sleeve 35, a square spring rod 362 is slidably mounted on the upper end of the square plate 361, and the square spring rod 362 slides up and down through the lower end of the square plate 361, the upper ends of the square spring rods 362 are fixedly connected to the corresponding correction plates 37, and round rods 363 are fixedly mounted on the opposite sides of the plurality of square spring rods 362.

[0047] See also Figure 3 A connecting sleeve 331 is provided on the middle fixed sleeve outside the adjusting sleeve 33, and a plurality of circumferentially evenly arranged downward pressing blocks 332 are fixedly installed on the lower end of the connecting sleeve 331, and the lower end of the downward pressing block 332 is set as an inclined surface for driving the round rod 363 to move downward.

[0048] The knocking mechanism 36 is used to drive the leveling plate 37 to knock on the lower end of the socket welding flange; specifically, when the annular electric slider assembly 34 is started to drive the transmission sleeve 35 to rotate clockwise, the transmission sleeve 35 drives the leveling plate 37 to rotate through the square plate 361 and the square spring rod 362. When the square spring rod 362 drives the round rod 363 to rotate to the corresponding position of the lower pressure block 332, the round rod 363 drives the leveling plate 37 to move downward through the square spring rod 362 under the action of the inclined surface of the lower pressure block 332. When the round rod 363 and the lower pressure block 332 are separated, the leveling plate 37 knocks the lower end of the socket welding flange upward under the elastic action of the square spring rod 362, and the lower pressure block 332 is provided with multiple ones, thereby realizing annular knocking on the socket welding flange. Then, when the socket welding flange is in a deflected state, the downward deflected end of the socket welding flange is subjected to the upward knocking force of the leveling plate 37, so that it can be restored to a horizontal arrangement state under the action of the knocking force.

[0049] When the inner hole of the socket weld flange is put on the cone structure of the support tube 21, the socket weld flange can compress a certain amount of the square spring rod 362 downward through the leveling plate 37 under the action of gravity, and when the position of the adjusting plate 321 is adjusted, the adjusting plate 321 finally drives the leveling plate 37 to move downward through the square rod 31 and the adjusting sleeve 33, so that the initial compression amount of the square spring rod 362 by the socket weld flange can be synchronously adjusted, preventing the leveling plate 37 from excessively knocking the socket weld flange upward under the action of the square spring rod 362, causing secondary deflection, and ensuring that the socket weld flange is always in a horizontal state after leveling.

[0050] See also Figure 3 and Figure 4 A plurality of positioning holes 364 evenly arranged up and down are provided on the opposite sides of the plurality of square spring rods 362, and a fixing plate 365 is fixedly installed on the opposite sides of the upper ends of the plurality of square plates 361. A pin 366 is detachably installed on the fixing plate 365, and the pin 366 is used to be inserted into the positioning hole 364 to lock the square spring rod 362.

[0051] When it is necessary to level the socket weld flange, pull the pin 366 out of the positioning hole 364. After the leveling of the socket weld flange is completed, by observing the position of the positioning hole 364 corresponding to the pin 366 and comparing whether the positions of multiple pins 366 and their corresponding positioning holes 364 are consistent, it is possible to accurately determine whether the socket weld flange is in a horizontal state, and by inserting the pin 366 into the corresponding positioning hole 364, the square spring rod 362 is locked, so that the multiple leveling plates 37 can stably support the lower end of the socket weld flange, so that the clamping block 44 and the leveling plate 37 cooperate to lock the flange in position.

[0052] See also Figure 2 and Figure 5A plurality of circumferentially evenly arranged clearance holes 23 are provided on the outer side of the truncated cone structure of the support tube 21, and two symmetrically arranged inclined grooves 24 are provided in the clearance holes 23, and the inclination angle of the inclined grooves 24 is consistent with the inclination angle of the generatrix of the truncated cone structure of the support tube 21.

[0053] See also Figure 5 The clamping mechanism 22 includes a circular plate 221 distributed on the upper side of the inner part of the support tube 21, a threaded rod 222 is rotatably installed on the upper end of the circular plate 221, and the threaded rod 222 and the top of the support tube 21 are connected by threaded matching, and a plurality of circumferentially evenly distributed transmission blocks 224 are installed on the outer side of the circular plate 221 through a multi-stage telescopic rod 223, and the transmission blocks 224 are all arranged in the give way holes 23, and the transmission blocks 224 are slidably connected to their corresponding inclined grooves 24, and the plurality of transmission blocks 224 are hingedly connected to the back sides with clamping plates 225, and a torsion spring is installed at the hinge between the clamping plate 225 and the transmission block 224.

[0054] The clamping mechanism 22 is used to make the lower end of the socket welding flange abut against the outer side of the truncated cone structure of the support tube 21; specifically, when the inner hole of the socket welding flange is sleeved on the truncated cone structure of the support tube 21, the clamping plate 225 can be rotated downward based on the hinge between it and the transmission block 224, so that the clamping plate 225 will not block the socket welding flange, and then the circular plate 221 is driven to move downward by screwing the threaded rod 222, so that the circular plate 221 drives the transmission block 224 to move downward in the clearance hole 23 through the multi-stage telescopic rod 223, and at the same time, the transmission block 224 can move in a direction consistent with the inclination angle of the busbar of the truncated cone structure under the action of the inclined groove 24, so that the transmission block 224 can drive the clamping plate 225 to press against the upper end of the socket welding flange.

[0055] By continuously screwing the threaded rod 222 through the circular plate 221, the clamping plate 225 is finally driven to move downward, so that the clamping plate 225 is blocked by the socket welding flange and rotates with the hinged part between it and the transmission block 224 as the reference, so that the clamping plate 225 gradually rotates from the horizontal state to the central axis direction of the support cylinder 21, so that the multiple clamping plates 225 are arranged with the back sides tilted upward, and the clamping plate 225 can press down the upward deflected end of the socket welding flange under the action of the torsion spring at the hinged part between it and the transmission block 224, so that the correction plate 37 knocks the socket welding flange upward to deflect upward When one end of the socket welding flange is moved upward, the socket welding flange will not move upward under the pressing action of the pressing plate 225, thereby ensuring that the socket welding flange can be corrected to a horizontal state. When the outer circle and end face of the socket welding flange are ground and finished, it helps to ensure that the processed roundness meets the requirements and reduces errors such as ovality caused by tilting, which helps to improve the surface quality and dimensional accuracy of the socket welding flange after grinding. By screwing the threaded rod 222, the circular plate 221 is driven to move upward to the initial position, so that the socket welding flange can be removed from the truncated cone structure of the support tube 21.

[0056] It should be noted that if Fig.10 As shown, in the present invention, a motor can be installed in the circular plate 221, and the output shaft of the motor is connected to the threaded rod 222, so that the threaded rod 222 can be driven to rotate quickly by controlling the motor, so that the clamping plate 225 can be quickly clamped against the upper side of the socket welding flange.

[0057] See also Figure 5 and Figure 6 The matching mechanism 43 includes a top extension spring rod 431 slidably installed at the lower end of the synchronization plate 41, and a plurality of circumferentially evenly distributed matching rods 432 are fixedly installed at the lower end of the top extension spring rod 431. The back sides of the plurality of matching rods 432 all pass through the corresponding square holes of the support tube 21 and slide up and down through the adjustment sleeve 33.

[0058] See also Figure 6 A plurality of L-shaped lower pressure plates 351 are fixedly mounted on the upper end of the transmission sleeve 35 and are evenly arranged in the circumference. The lower side of the horizontal section of the lower pressure plate 351 is set as an inclined surface for driving the matching rod 432 to move downward. The number of the lower pressure plates 351 is an integer multiple of the number of the matching rods 432, so that the lower pressure plates 351 can drive the matching rods 432 to press down at the same time, ensuring that the extension spring rod 431 is evenly stressed.

[0059] See also Figure 5 The upper end of the extension spring rod 431 slides up and down, passes through the synchronous plate 41 and is fixedly connected to the transmission plate 433. A plurality of circumferentially evenly distributed synchronous blocks 435 are installed on the outer side of the transmission plate 433 through a synchronous rod 434 of a multi-stage telescopic structure. The synchronous blocks 435 are all arranged in the give way holes 23, and the synchronous blocks 435 are also slidably connected to their corresponding inclined grooves 24. The outer sides of the plurality of synchronous blocks 435 are hinged with inclined rods 436. The end of the inclined rod 436 away from the synchronous block 435 is tilted downward and hinged to the inclined surface of the corresponding clamping block 44. Torsion springs are installed at the hinges of the inclined rod 436, the synchronous block 435 and the clamping block 44; wherein the clamping block 44 is initially located outside the truncated cone structure of the support cylinder 21.

[0060] The matching mechanism 43 is used to drive the clamping block 44 to clamp and fix the socket welding flange; specifically, when the inner hole of the socket welding flange is sleeved on the conical structure of the support tube 21, the clamping block 44 can drive the inclined rod 436 to rotate downward to the clearance hole 23 based on the hinge of the inclined rod 436 and the synchronous block 435, so that the clamping block 44 will not block the socket welding flange, and the inclined rod 436 drives the clamping block 44 to return to its initial position under the action of the torsion spring at the hinge of the inclined rod 436 and the synchronous block 435, so that the clamping block 44 is located above the stepped structure of the inner hole of the socket welding flange.

[0061] When the annular electric slider assembly 34 is started to drive the transmission sleeve 35 to rotate clockwise, the transmission sleeve 35 drives the lower pressure plate 351 to rotate synchronously. When the lower pressure plate 351 rotates to the corresponding position of the matching rod 432, the inclined surface of the horizontal section of the lower pressure plate 351 drives the matching rod 432 to move downward, so that the matching rod 432 drives the transmission plate 433 to move downward through the extended spring rod 431, and the transmission plate 433 drives the clamping block 44 to move to the corresponding position of the stepped structure of the inner hole of the socket welding flange through the inclined rod 436, and makes multiple clamping blocks 44 move away from each other along the horizontal surface of the stepped structure of the inner hole of the socket welding flange and extend the inner side of the socket welding flange.

[0062] And there are multiple lower pressure plates 351, so that multiple clamping blocks 44 can intermittently push the inner side of the socket welding flange to ensure that the socket welding flange and the support tube 21 are centered and aligned, and when the socket welding flange is in a skewed state, the clamping block 44 can rotate with the hinge between it and the inclined rod 436 as a reference, so that the multiple clamping blocks 44 can push the inner side of the socket welding flange in a direction away from each other in a surface contact manner, preventing excessive local pressure on the inner side of the socket welding flange from causing scratches and other damage to the inner side of the socket welding flange.

[0063] When the leveling of the socket welding flange is completed, continue to drive the circular plate 221 to move downward by screwing the threaded rod 222, so that the circular plate 221 drives the transmission plate 433 to move downward, and then the transmission plate 433 drives multiple clamping blocks 44 to move downward through the inclined rod 436. When the clamping block 44 moves to the horizontal plane of the stepped structure of the inner hole of the socket welding flange, at this time, the multiple clamping blocks 44 can move away from each other along the horizontal plane of the stepped structure of the inner hole of the socket welding flange and press against the corners of the stepped structure of the inner hole of the socket welding flange, so that the multiple clamping blocks 44 clamp downward at the corners of the stepped structure of the inner hole of the socket welding flange, so that the clamping blocks 44 and the leveling plate 37 cooperate to achieve multi-point clamping and fixation of the socket welding flange, thereby increasing the stability of the socket welding flange clamping.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tooling fixture for flange processing, comprising a fixed seat, a plurality of support frames are fixedly mounted on the lower end of the fixed seat, characterized in that: A supporting device is installed at the middle of the upper end of the fixing seat, a leveling device is installed on the supporting device, and a clamping device is connected between the leveling device and the supporting device; The support device comprises a support cylinder fixedly mounted in the middle of the upper end of the fixing seat, the lower end of the support cylinder is set as a columnar structure, and the upper end is set as a truncated cone structure. The support cylinder is equipped with a tightening mechanism for making the lower end of the socket welding flange abut against the outer side of the truncated cone structure of the support cylinder, and the columnar structure of the support cylinder is provided with a plurality of square holes evenly arranged in the circumferential direction; The leveling device comprises a square rod slidably installed in a square hole up and down, an adjusting mechanism for adjusting the height of the square rod is installed on opposite sides of the plurality of square rods, an adjusting sleeve is fixedly installed on opposite sides of the plurality of square rods, and the adjusting sleeve is arranged on the outside of the support tube, a transmission sleeve is installed on the lower part of the outer side of the adjustment sleeve through an annular electric slider assembly, and a plurality of circumferentially evenly distributed leveling plates are installed on the outer side of the transmission sleeve through a knocking mechanism, and the knocking mechanism is used to drive the leveling plate to knock on the lower side of the socket welding flange; The clamping device includes a synchronous plate that is slidably installed in a support tube up and down. The lower end of the synchronous plate is connected to an adjustment mechanism through a plurality of circumferentially evenly arranged connecting rods. The upper end of the synchronous plate is installed with a plurality of circumferentially evenly arranged triangular-structured clamping blocks through a matching mechanism. The matching mechanism is used to drive the clamping block to clamp and fix the socket welding flange.

2. A flange processing fixture according to claim 1, characterized in that: The adjustment mechanism includes an adjustment plate fixedly installed on the opposite sides of multiple square rods, the upper end of the adjustment plate is fixedly connected to the lower ends of multiple connecting rods, the lower end of the adjustment plate is rotatably installed with an adjustment screw, and the lower end of the adjustment screw is connected to the fixing seat by threaded cooperation.

3. A flange processing fixture according to claim 1, characterized in that: The knocking mechanism includes a plurality of circumferentially evenly arranged square plates fixedly mounted on the outside of the transmission sleeve, a square spring rod is slidably mounted on the upper end of the square plate, and the square spring rod slides up and down through the lower end of the square plate, the upper ends of the square spring rods are fixedly connected to the corresponding correction plates, and round rods are fixedly mounted on the opposite sides of the plurality of square spring rods.

4. A flange processing fixture according to claim 3, characterized in that: A connecting sleeve is provided on the middle fixed sleeve outside the adjusting sleeve, and a plurality of circumferentially evenly arranged downward pressing blocks are fixedly installed on the lower end of the connecting sleeve, and the lower end of the downward pressing block is provided with an inclined surface for driving the round rod to move downward.

5. A flange processing fixture according to claim 3, characterized in that: A plurality of positioning holes evenly arranged up and down are provided on the opposite sides of the plurality of square spring rods, and a fixing plate is fixedly installed on the opposite sides of the upper ends of the plurality of square plates. The fixing plate is detachably mounted with a pin, which is used to be inserted into the positioning hole to lock the square spring rod.

6. A flange processing fixture according to claim 1, characterized in that: The outer side of the support cylinder truncated cone structure is provided with a plurality of circumferentially evenly arranged clearance holes, and the clearance holes are provided with two symmetrically arranged inclined grooves, and the inclination angle of the inclined grooves is consistent with the inclination angle of the generatrix of the support cylinder truncated cone structure.

7. A flange processing fixture according to claim 6, characterized in that: The clamping mechanism includes a circular plate distributed on the upper side of the support tube, a threaded rod is rotatably installed on the upper end of the circular plate, and the threaded rod and the top end of the support tube are connected by threaded cooperation, and a plurality of circumferentially evenly distributed transmission blocks are installed on the outer side of the circular plate through multi-stage telescopic rods, the transmission blocks are all arranged in the give way holes, and the transmission blocks are slidably connected to their corresponding inclined grooves, and the back sides of the plurality of transmission blocks are hinged with clamping plates, and torsion springs are installed at the hinges between the clamping plates and the transmission blocks.

8. A flange processing fixture according to claim 6, characterized in that: The matching mechanism includes an extension spring rod slidably installed at the lower end of the synchronization plate, and a plurality of circumferentially evenly distributed matching rods are fixedly installed at the lower end of the extension spring rod. The back sides of the plurality of matching rods all pass through the corresponding square holes of the support tube and slide up and down to penetrate the adjustment sleeve.

9. A flange processing fixture according to claim 8, characterized in that: A plurality of L-shaped lower pressure plates which are evenly arranged in the circumferential direction are fixedly mounted on the upper end of the transmission sleeve, and the lower side of the horizontal section of the lower pressure plate is arranged as an inclined surface for driving the matching rod to move downward.

10. A flange processing fixture according to claim 8, characterized in that: The upper end of the extension spring rod slides up and down, penetrates the synchronous plate and is fixedly connected to the transmission plate. A plurality of circumferentially evenly distributed synchronous blocks are installed on the outer side of the transmission plate through a synchronous rod with a multi-stage telescopic structure. The synchronous blocks are all arranged in the give way holes, and the synchronous blocks are also slidably connected to their corresponding inclined grooves. An inclined rod is hinged on the outer side of the plurality of synchronous blocks. An end of the inclined rod away from the synchronous block is tilted downward and hinged to the inclined surface of the corresponding clamping block. Torsion springs are installed at the hinges between the inclined rod, the synchronous block and the clamping block.

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