Stainless steel elbow joint machining and forming equipment

Abstract

The invention belongs to the technical field of stainless steel elbow joints, and particularly relates to stainless steel elbow joint machining and forming equipment which comprises a top disc, a bottom disc, a bottom disc and a top plate. An annular welding groove is formed in the edge of the top face of the top disc, the welding structure is in sliding connection with the welding groove, the welding structure does circular motion along the axis of the top disc, and the welding end of the welding structure faces the butt joint seam of the circular ring and the stainless steel bent pipe; a plurality of rectangular grooves are formed in the top disc, the rectangular grooves are distributed in the circumferential direction at equal intervals, and the clamping structures are installed on the corresponding rectangular grooves respectively; and the polishing and positioning structure is located below the top disc, and the polishing end of the polishing and positioning structure extends into the stainless steel bent pipe. Welding and grinding are integrally designed, a grinding and positioning system in the vertical direction is arranged, a traditional step-by-step operation mode is abandoned, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stainless steel elbow joints, and in particular relates to a stainless steel elbow joint processing and forming device. Background Art

[0002] Stainless steel elbow joint is a kind of pipe fitting used to connect two stainless steel elbows. It is usually made of stainless steel and has the advantages of corrosion resistance, high strength, good sealing and easy installation. It should be noted that when selecting and using stainless steel elbow joints, it is necessary to select appropriate materials, specifications and models according to actual working conditions and requirements to ensure the safety and durability of the pipeline system. The processing and forming of stainless steel elbow joints is to weld the stainless steel elbow joints with the metal connecting rings after docking.

[0003] The problems existing in the existing stainless steel pipe bending equipment are mainly reflected in two aspects:

[0004] 1. Non-integrated welding and grinding process: The welding process and grinding process in the equipment are carried out separately, which means that after welding, the workpiece needs to be re-clamped for grinding. Such step-by-step processing not only increases the complexity and time cost of the operation, but may also cause deformation or position error of the workpiece due to repeated loading and unloading, affecting the quality of the finished product.

[0005] 2. Unstable vertical positioning: During the welding and grinding process, due to the lack of an effective mechanism to ensure the precise vertical positioning of the stainless steel elbows and rings, this may lead to problems such as uneven welding seams and uneven grinding. Unstable positioning will directly affect the dimensional accuracy and surface finish of the product, thereby reducing the qualified rate and aesthetics of the finished product.

[0006] These problems not only affect production efficiency, but also pose challenges to product quality and consistency. Therefore, improving equipment to achieve integrated welding and grinding operations and enhancing vertical positioning stability are key directions for improving the stainless steel pipe bending process. Summary of the invention

[0007] The purpose of the present invention is to provide a stainless steel elbow joint processing and forming equipment to solve the above problems.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] A stainless steel elbow joint processing and forming device, comprising:

[0010] A top plate, wherein a circular ring positioning groove is provided in the middle of the top plate, and a circular ring is clamped inside the circular ring positioning groove;

[0011] A welding structure, wherein a circular ring-shaped welding groove is provided on the top edge of the top plate, the welding structure is slidably connected to the welding groove, the welding structure moves in a circle along the axis of the top plate, and the welding end of the welding structure faces the joint between the circular ring and the stainless steel elbow;

[0012] A plurality of clamping structures, wherein a plurality of rectangular grooves are provided on the top plate, and the plurality of rectangular grooves are evenly spaced in the circumferential direction, and the plurality of clamping structures are respectively installed on the corresponding rectangular grooves, and the clamping structure comprises an upper clamping structure and a lower clamping structure, and the upper clamping structure and the lower clamping structure are used to clamp the ring;

[0013] A grinding positioning structure, wherein the grinding positioning structure is located below the top plate, and the grinding end of the grinding positioning structure extends into the interior of the stainless steel bent pipe, the grinding positioning structure is transmission-connected to a grinding drive structure, the grinding drive structure is placed on a chassis, the chassis is coaxially arranged with the top plate, and the chassis is located below the top plate; the grinding positioning structure comprises a positioning structure, and a first retractable grinding structure and a second retractable grinding structure are slidably connected to the positioning structure, and the first retractable grinding structure and the second retractable grinding structure are staggered;

[0014] A plurality of support columns are fixedly connected between the bottom surface of the top plate and the top surface of the bottom plate, and the support columns are used to support the top plate.

[0015] Preferably, the welding structure includes a welding plate slidably connected to the welding groove, the top surface of the welding plate is fixedly connected to a welding hinge seat, one end of a mechanical arm is hinged on the welding hinge seat, the other end of the mechanical arm is hinged to a mechanical small arm, the end of the mechanical small arm away from the mechanical arm is hinged to a welding frame, a welding gun is fixed on the welding frame, and the working end of the welding gun is aligned with the butt joint between the circular ring and the stainless steel bent pipe.

[0016] Preferably, the upper clamping structure comprises two clamping hinge seats, the two clamping hinge seats are fixedly connected to one end of the rectangular groove away from the circular ring, an upper clamping plate is rotatably connected between the two clamping hinge seats, and the bottom surface of the upper clamping plate is in contact with the top surface of the circular ring;

[0017] Clamping grooves are provided on both sides of the upper clamping plate, and the clamping grooves are opened on the top surface of the top plate. Friction columns are slidably connected in the clamping grooves, and the top surfaces of the two friction columns are fixedly connected to the same pressing plate;

[0018] The cross section of the clamping groove is wedge-shaped, and the groove surface height of the clamping groove increases from shallow to deep along the direction from the edge of the top plate to the center.

[0019] Preferably, the lower clamping structure comprises a lower clamping plate, the lower clamping plate is rotatably connected to an end of the rectangular groove away from the circular ring, and the lower clamping plate is vertically arranged corresponding to the upper clamping plate;

[0020] A camshaft is provided below the lower clamping plate, the camshaft is axially connected to the output end of the small motor, the small motor is fixed to the groove surface of the rectangular groove, a cam is fixedly sleeved on the outer side of the camshaft, and the cam is in contact with the bottom surface of the lower clamping plate.

[0021] Preferably, the positioning structure includes a positioning column, and a plurality of first sliding grooves and a plurality of second sliding grooves are evenly spaced apart in the circumferential outer side of the positioning column, the plurality of first sliding grooves and the plurality of second sliding grooves are spaced apart, the first sliding groove is slidably matched with the first telescopic grinding structure, and the second sliding groove is slidably matched with the second telescopic grinding structure.

[0022] Preferably, the first retractable grinding structure comprises a slide cylinder, a first fixed plate is fixedly connected to the top surface of the slide cylinder, a plurality of first slide bars are fixedly connected to the edge of the top surface of the first fixed plate at equal intervals in the circumferential direction, and the first slide bars are slidably connected to the inside of the first slide groove;

[0023] A first hinge seat is fixedly connected to the upper portion of the first slide bar, one end of a first connecting rod is hinged to the first hinge seat, and a first polishing positioning block is hinged to the other end of the first connecting rod, and the outer side surface of the first polishing positioning block contacts the inner wall of the stainless steel bent pipe.

[0024] Preferably, the second retractable grinding structure comprises a sliding column, a through hole is formed on the first fixed plate, the sliding column passes through the through hole and is slidably nested inside the sliding cylinder, the length of the sliding column is greater than the length of the sliding cylinder, the sliding column is axially slidably matched with the sliding cylinder, and radially limited by a spline and a keyway;

[0025] The top surface of the slide column is fixedly connected to a second fixed plate, and the edge of the top surface of the second fixed plate is fixedly connected to a plurality of rotating seats at equal intervals in the circumferential direction, and one end of a hinged rod is hingedly connected to the rotating seat, and the other end of the hinged rod is hingedly connected to a second slide bar, and the second slide bar is slidably connected inside the second slide groove;

[0026] A second hinge seat is fixedly connected to the upper part of the second slide bar, one end of a second connecting rod is hinged on the second hinge seat, and a second polishing positioning block is hinged on the other end of the second connecting rod. The outer side surface of the second polishing positioning block contacts the inner wall of the stainless steel bent pipe.

[0027] Preferably, abutment blocks are provided below the first hinge seat and the second hinge seat, and the abutment blocks are fixedly connected to the positioning column.

[0028] Preferably, the grinding drive structure includes a grinding motor placement frame placed on the top surface of the chassis, a grinding motor is placed inside the grinding motor placement frame, an output shaft of the grinding motor is fixedly connected with a plug connector, and the plug connector is interference fit with the sliding column.

[0029] Preferably, the outer sides of the first polishing positioning block and the second polishing positioning block are coated with polishing paint.

[0030] Compared with the prior art, the present invention has the following advantages and technical effects:

[0031] 1. The integrated design of welding and grinding of the present invention abandons the traditional step-by-step operation mode and realizes the continuous operation process of welding and grinding. It not only reduces the number of loading and unloading of workpieces, reduces the potential errors and deformation risks caused by the increase of operation links, but also significantly improves production efficiency, making the entire manufacturing process more compact and efficient.

[0032] 2. The present invention has a vertical grinding and positioning system, which can ensure that the stainless steel elbow and ring maintain accurate vertical positioning and grinding during the entire processing process through the grinding and positioning structure. This improvement fundamentally solves the welding defects and uneven grinding problems caused by unstable positioning in the past, ensures the dimensional accuracy and surface integrity of the product, and improves the consistency and quality standards of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0034] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 3 It is a structural schematic diagram of the welding structure of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the clamping structure of the present invention;

[0038] Figure 5 for Figure 4 A partial cross-sectional view of

[0039] Figure 6 It is a structural schematic diagram of the grinding and positioning structure of the present invention;

[0040] Figure 7 for Figure 6 Exploded diagram of

[0041] Figure 8 for Figure 7 A magnified view of middle;

[0042] Fig. 9 An exploded view of the grinding drive structure of the present invention;

[0043] Fig.10 It is a cross-sectional view of the connection between the slide cylinder and the slide column;

[0044] Fig.11 It is the structural schematic diagram of the stainless steel specimen;

[0045] Among them, 1, top plate; 2, welding structure; 3, clamping structure; 4, chassis; 5, support column; 6, grinding drive structure; 7, rectangular groove; 8, grinding positioning structure; 9, circular ring positioning groove; 101, welding groove; 201, welding plate; 202, welding articulated seat; 203, mechanical arm; 204, mechanical arm; 205, welding frame; 206, welding gun; 301, clamping groove; 302, pressure plate; 303, friction column; 304, clamping articulated seat; 305, upper clamping plate; 306, lower clamping plate; 307, small motor; 308, cam; 601, grinding motor placement frame; 602, grinding motor; 603, plug connector; 801, first extendable retractable grinding structure; 802, second retractable grinding structure; 803, positioning structure; 8011, slide; 8012, first fixed plate; 8013, first slide bar; 8014, through hole; 8015, first hinge seat; 8016, first connecting rod; 8017, first grinding positioning block; 8021, slide column; 8022, second fixed plate; 8023, rotating seat; 8024, hinged rod; 8025, second slide bar; 8026, second hinge seat; 8027, second connecting rod; 8028, second grinding positioning block; 8031, slide groove; 8032, abutment block; 8033, positioning column; 1001, stainless steel bent pipe; 1002, ring. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Reference Figures 1 to 11 The present invention discloses a stainless steel elbow joint processing and forming device, comprising:

[0049] The top plate 1 has a circular ring positioning groove 9 in the middle of the top plate 1, and the circular ring 1002 is clamped inside the circular ring positioning groove 9;

[0050] The welding structure 2 has a circular welding groove 101 formed on the top edge of the top plate 1. The welding structure 2 is slidably connected to the welding groove 101. The welding structure 2 moves in a circle along the axis of the top plate 1. The welding end of the welding structure 2 faces the joint between the circular ring 1002 and the stainless steel elbow 1001.

[0051] A plurality of clamping structures 3, a plurality of rectangular grooves 7 are provided on the top plate 1, the plurality of rectangular grooves 7 are circumferentially evenly spaced, and the plurality of clamping structures 3 are respectively installed on the corresponding rectangular grooves 7, the clamping structure 3 comprises an upper clamping structure and a lower clamping structure, and the upper clamping structure and the lower clamping structure are used to clamp the ring 1002;

[0052] A grinding positioning structure 8, the grinding positioning structure 8 is located below the top plate 1, and the grinding end of the grinding positioning structure 8 extends into the stainless steel curved pipe 1001, the grinding positioning structure 8 is transmission-connected to the grinding drive structure 6, the grinding drive structure 6 is placed on the chassis 4, the chassis 4 is coaxially arranged with the top plate 1, and the chassis 4 is located below the top plate 1; the grinding positioning structure 8 includes a positioning structure 803, the positioning structure 803 is slidably connected with a first retractable grinding structure 801 and a second retractable grinding structure 802, and the first retractable grinding structure 801 and the second retractable grinding structure 802 are staggered;

[0053] A plurality of support columns 5 are fixedly connected between the bottom surface of the top plate 1 and the top surface of the bottom plate 4 , and the support columns 5 are used to support the top plate 1 .

[0054] The integrated design of welding and grinding of the present invention abandons the traditional step-by-step operation mode and realizes a continuous operation process of welding and grinding. It not only reduces the number of loading and unloading times of the workpiece and reduces the potential risk of errors and deformation caused by the increase in operating links, but also significantly improves production efficiency, making the entire manufacturing process more compact and efficient. The present invention has a vertical grinding and positioning system, which can ensure that the stainless steel elbow and the ring maintain precise vertical positioning and grinding during the entire processing process through the grinding positioning structure 8. This improvement fundamentally solves the problems of welding defects and uneven grinding caused by unstable positioning in the past, ensures the dimensional accuracy and surface integrity of the product, and improves the consistency and quality standards of the finished product.

[0055] A further optimized solution is provided, in which the welding structure 2 includes a welding plate 201 which is slidably connected to the welding groove 101, a welding hinge seat 202 being fixedly connected to the top surface of the welding plate 201, one end of a mechanical arm 203 being hinged on the welding hinge seat 202, a mechanical forearm 204 being hinged on the other end of the mechanical arm 203, a welding frame 205 being hinged on one end of the mechanical forearm 204 away from the mechanical arm 203, a welding gun 206 being fixedly connected to the welding frame 205, and a working end of the welding gun 206 being aligned with the joint between the circular ring 1002 and the stainless steel bent pipe 1001.

[0056] The movement mode of the welding structure 2 is a prior art and will not be described in detail here. One movement mode is as follows: micro motors are provided at the connection joints between the mechanical arm 203 and the mechanical arm 204, and between the mechanical arm 204 and the welding frame 205, for controlling the angles of the mechanical arm 204 and the welding frame 205, and a motor is fixedly connected to the top surface of the welding disk 201, and the output end of the motor is axially connected to the welding disk 201, for controlling the rotation of the welding disk 201.

[0057] Further optimized solution, the upper clamping structure includes two clamping hinge seats 304, the two clamping hinge seats 304 are fixed to the end of the rectangular groove 7 away from the ring 1002, an upper clamping plate 305 is rotatably connected between the two clamping hinge seats 304, and the bottom surface of the upper clamping plate 305 is in contact with the top surface of the ring 1002;

[0058] The upper clamping plate 305 is provided with clamping grooves 301 on both sides. The clamping grooves 301 are opened on the top surface of the top plate 1. The clamping grooves 301 are slidably connected with friction columns 303. The top surfaces of the two friction columns 303 are fixedly connected with the same pressing plate 302.

[0059] The cross section of the clamping groove 301 is wedge-shaped, and the groove surface height of the clamping groove 301 increases from shallow to deep along the direction from the edge of the top plate 1 to the center.

[0060] When the upper clamping plate 305 needs to clamp the ring 1002, the friction column 303 is slid to the position of the clamping groove 301 close to the center of the top plate 1. At this time, the friction column 303 is stuck in the clamping groove 301, and the bottom surface of the pressure plate 302 contacts the top surface of the upper clamping plate 305, completing the clamping work of the upper clamping plate 305 on the ring 1002. When the ring 1002 needs to be taken out, the friction column 303 is slid away from the center of the top plate 1, and then the upper clamping plate 305 is opened. At this time, the upper clamping plate 305 has no limiting effect on the ring 1002, and the ring 1002 can be removed.

[0061] Further optimizing the scheme, the lower clamping structure includes a lower clamping plate 306, the lower clamping plate 306 is rotatably connected to the end of the rectangular groove 7 away from the ring 1002, and the lower clamping plate 306 is vertically corresponding to the upper clamping plate 305;

[0062] A camshaft is provided below the lower clamping plate 306 , and the camshaft is axially connected to the output end of the small motor 307 . The small motor 307 is fixed to the groove surface of the rectangular groove 7 . A cam 308 is fixedly sleeved on the outer side of the camshaft, and the cam 308 is in contact with the bottom surface of the lower clamping plate 306 .

[0063] When the lower clamping plate 306 needs to clamp the ring 1002, the small motor 307 is started to make the highest point of the cam 308 contact the bottom surface of the lower clamping plate 306, and the upper clamping plate 305 is cooperated to clamp the ring 1002. The ring 1002 can be accurately positioned in the vertical direction during the entire processing process, solving the welding defects caused by unstable positioning in the past.

[0064] A further optimized solution is that the positioning structure 803 includes a positioning column 8033, and a plurality of first slide grooves 8031 ​​and a plurality of second slide grooves are evenly spaced around the outer side of the positioning column 8033, and the plurality of first slide grooves 8031 ​​are spaced apart from the plurality of second slide grooves, the first slide groove 8031 ​​is slidably matched with the first telescopic grinding structure 801, and the second slide groove is slidably matched with the second telescopic grinding structure 802.

[0065] Further optimized solution, the first retractable grinding structure 801 includes a slide cylinder 8011, the top surface of the slide cylinder 8011 is fixedly connected to a first fixed plate 8012, the top surface edge of the first fixed plate 8012 is fixedly connected to a plurality of first slide bars 8013 at equal intervals in the circumferential direction, and the first slide bar 8013 is slidably connected to the inside of the first slide groove 8031;

[0066] A first hinge seat 8015 is fixedly connected to the upper portion of the first slide bar 8013 , one end of a first connecting rod 8016 is hinged to the first hinge seat 8015 , and a first polishing positioning block 8017 is hinged to the other end of the first connecting rod 8016 . The outer side surface of the first polishing positioning block 8017 contacts the inner wall of the stainless steel bent pipe 1001 .

[0067] Further optimizing the scheme, the second retractable grinding structure 802 includes a slide post 8021, a through hole 8014 is opened on the first fixed plate 8012, the slide post 8021 passes through the through hole 8014 and is slidably nested in the interior of the slide cylinder 8011, the length of the slide post 8021 is greater than the length of the slide cylinder 8011, the slide post 8021 and the slide cylinder 8011 are axially slidably matched, and radially limited by splines and keyways;

[0068] The top surface of the slide column 8021 is fixedly connected to a second fixed plate 8022, and a plurality of rotating seats 8023 are fixedly connected to the edge of the top surface of the second fixed plate 8022 at equal intervals in the circumferential direction. One end of a hinged rod 8024 is hingedly connected to the rotating seat 8023, and the other end of the hinged rod 8024 is hingedly connected to a second slide bar 8025, and the second slide bar 8025 is slidably connected to the inside of the second slide groove;

[0069] A second hinged seat 8026 is fixedly connected to the upper portion of the second slide bar 8025 , one end of a second connecting rod 8027 is hinged to the second hinged seat 8026 , and a second polished positioning block 8028 is hinged to the other end of the second connecting rod 8027 . The outer side surface of the second polished positioning block 8028 contacts the inner wall of the stainless steel bent pipe 1001 .

[0070] To further optimize the solution, abutment blocks 8032 are provided below the first hinge seat 8015 and the second hinge seat 8026 , and the abutment blocks 8032 are fixedly connected to the positioning column 8033 .

[0071] When the first telescopic grinding structure 801 needs to be recovered, the slide 8011 is pulled downward, and the first slide bar 8013 slides vertically downward in the slide groove 8031. Since the positioning column 8033 is fixed with the abutment block 8032, during the downward sliding of the first slide bar 8013, the first connecting rod 8016 on the first hinge seat 8015 will contact the abutment block 8032, and the first connecting rod 8016 will be subjected to the force of the abutment block 8032. At this time, the first connecting rod 8016 tilts upward, driving the first grinding positioning block 8017 to shrink inward. On the contrary, when the slide 8011 is pulled upward, the first grinding positioning block 8017 will open outward, and then contact the inner docking surface of the ring 1002 and the stainless steel elbow 1001. The working principle of the second telescopic grinding structure 802 is the same as that of the first telescopic grinding structure 801. The only difference is that when the slide column 8021 is pulled downward, a relative movement occurs between the hinge rod 8024 and the second slide bar 8025 .

[0072] When the grinding and positioning structure 8 is not moving, friction can be generated between it and the stainless steel bent pipe 1001, thereby ensuring that the stainless steel bent pipe 1001 remains stationary in the vertical direction during the welding process.

[0073] According to a further optimization scheme, the grinding drive structure 6 includes a grinding motor placement frame 601 placed on the top surface of the chassis 4, a grinding motor 602 is placed inside the grinding motor placement frame 601, an output shaft of the grinding motor 602 is fixedly connected with a plug connector 603, and the plug connector 603 is interference fit with the sliding column 8021.

[0074] When the butt joint surface between the stainless steel bent pipe 1001 and the ring 1002 needs to be polished, the slide 8011 is plugged into the plug connector 603, and the polishing motor 602 is started. At this time, the slide 8011 and the slide column 8021 rotate synchronously, thereby driving the first polishing positioning block 8017 and the second polishing positioning block 8028 to polish it.

[0075] According to a further optimization scheme, the outer surfaces of the first polishing positioning block 8017 and the second polishing positioning block 8028 are coated with polishing paint.

[0076] The polishing paint is preferably epoxy resin paint, which has excellent chemical stability and corrosion resistance and good adhesion to various metal surfaces.

[0077] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A stainless steel elbow joint processing and forming equipment, characterized in that: include: A top plate (1), wherein a circular ring positioning groove (9) is provided in the middle of the top plate (1), and a circular ring (1002) is clamped inside the circular ring positioning groove (9); A welding structure (2), wherein a circular welding groove (101) is provided on the top edge of the top plate (1), the welding structure (2) is slidably connected to the welding groove (101), the welding structure (2) performs a circular motion along the axis of the top plate (1), and the welding end of the welding structure (2) faces the joint between the circular ring (1002) and the stainless steel bent pipe (1001); A plurality of clamping structures (3), wherein the top plate (1) is provided with a plurality of rectangular grooves (7), wherein the plurality of rectangular grooves (7) are evenly spaced in the circumferential direction, and the plurality of clamping structures (3) are respectively mounted on the corresponding rectangular grooves (7), wherein the clamping structures (3) comprise an upper clamping structure and a lower clamping structure, and wherein the upper clamping structure and the lower clamping structure are used to clamp the circular ring (1002); A grinding positioning structure (8), wherein the grinding positioning structure (8) is located below the top plate (1), and the grinding end of the grinding positioning structure (8) extends into the interior of the stainless steel bent pipe (1001), the grinding positioning structure (8) is transmission-connected to a grinding drive structure (6), the grinding drive structure (6) is placed on a chassis (4), the chassis (4) is coaxially arranged with the top plate (1), and the chassis (4) is located below the top plate (1); the grinding positioning structure (8) comprises a positioning structure (803), and a first retractable grinding structure (801) and a second retractable grinding structure (802) are slidably connected to the positioning structure (803), and the first retractable grinding structure (801) and the second retractable grinding structure (802) are alternately arranged; A plurality of support columns (5), wherein the plurality of support columns (5) are fixedly connected between the bottom surface of the top plate (1) and the top surface of the bottom plate (4), and the support columns (5) are used to support the top plate (1).

2. The stainless steel elbow joint processing and forming equipment according to claim 1 is characterized in that: The welding structure (2) comprises a welding plate (201) slidably connected to the welding groove (101), the top surface of the welding plate (201) is fixedly connected to a welding hinge seat (202), one end of a mechanical arm (203) is hinged to the welding hinge seat (202), the other end of the mechanical arm (203) is hinged to a mechanical arm (204), the end of the mechanical arm (204) away from the mechanical arm (203) is hinged to a welding frame (205), a welding gun (206) is fixedly connected to the welding frame (205), and the working end of the welding gun (206) is aligned with the joint between the circular ring (1002) and the stainless steel bent pipe (1001).

3. The stainless steel elbow joint processing and forming equipment according to claim 1 is characterized in that: The upper clamping structure comprises two clamping hinge seats (304), the two clamping hinge seats (304) are fixedly connected to one end of the rectangular groove (7) away from the circular ring (1002), an upper clamping plate (305) is rotatably connected between the two clamping hinge seats (304), and the bottom surface of the upper clamping plate (305) is in contact with the top surface of the circular ring (1002); Clamping grooves (301) are provided on both sides of the upper clamping plate (305), and the clamping grooves (301) are opened on the top surface of the top plate (1). Friction columns (303) are slidably connected in the clamping grooves (301), and the top surfaces of the two friction columns (303) are fixedly connected to the same pressing plate (302); The cross section of the clamping groove (301) is wedge-shaped, and the groove surface height of the clamping groove (301) increases from shallow to deep along the direction from the edge of the top plate (1) toward the center.

4. The stainless steel elbow joint processing and forming equipment according to claim 3 is characterized in that: The lower clamping structure comprises a lower clamping plate (306), the lower clamping plate (306) is rotatably connected to one end of the rectangular groove (7) away from the circular ring (1002), and the lower clamping plate (306) is vertically arranged corresponding to the upper clamping plate (305); A camshaft is provided below the lower clamping plate (306), and the camshaft is axially connected to the output end of a small motor (307). The small motor (307) is fixedly connected to the groove surface of the rectangular groove (7). A cam (308) is fixedly sleeved on the outer side of the camshaft, and the cam (308) is in contact with the bottom surface of the lower clamping plate (306).

5. The stainless steel elbow joint processing and forming equipment according to claim 1 is characterized in that: The positioning structure (803) includes a positioning column (8033), and a plurality of first sliding grooves (8031) and a plurality of second sliding grooves are evenly spaced apart on the outer circumference of the positioning column (8033). The plurality of first sliding grooves (8031) and the plurality of second sliding grooves are spaced apart from each other. The first sliding groove (8031) is slidably matched with the first telescopic grinding structure (801), and the second sliding groove is slidably matched with the second telescopic grinding structure (802).

6. The stainless steel elbow joint processing and forming equipment according to claim 5, characterized in that: The first telescopic grinding structure (801) comprises a slide cylinder (8011), the top surface of the slide cylinder (8011) is fixedly connected to a first fixed disk (8012), a plurality of first slide bars (8013) are fixedly connected to the edge of the top surface of the first fixed disk (8012) at equal intervals in the circumferential direction, and the first slide bars (8013) are slidably connected to the inside of the first slide groove (8031); The upper part of the first sliding bar (8013) is fixedly connected to a first hinge seat (8015), one end of a first connecting rod (8016) is hinged on the first hinge seat (8015), and the other end of the first connecting rod (8016) is hinged to a first grinding positioning block (8017), and the outer side surface of the first grinding positioning block (8017) is in contact with the inner wall of the stainless steel bent pipe (1001).

7. The stainless steel elbow joint processing and forming equipment according to claim 6 is characterized in that: The second telescopic grinding structure (802) includes a sliding column (8021), and the first fixed plate (8012) is provided with a through hole (8014). The sliding column (8021) passes through the through hole (8014) and is slidably nested in the interior of the slide cylinder (8011). The length of the sliding column (8021) is greater than the length of the slide cylinder (8011). The sliding column (8021) and the slide cylinder (8011) are axially slidably matched, and radially limited by splines and keyways; The top surface of the slide column (8021) is fixedly connected to a second fixed plate (8022), and a plurality of rotating seats (8023) are fixedly connected to the edge of the top surface of the second fixed plate (8022) at equal intervals in the circumferential direction, and one end of a hinged rod (8024) is hingedly connected to the rotating seat (8023), and the other end of the hinged rod (8024) is hingedly connected to a second slide bar (8025), and the second slide bar (8025) is slidably connected inside the second slide groove; The upper part of the second slide bar (8025) is fixedly connected to a second hinge seat (8026), one end of a second connecting rod (8027) is hinged on the second hinge seat (8026), and the other end of the second connecting rod (8027) is hinged to a second polishing positioning block (8028), and the outer side surface of the second polishing positioning block (8028) is in contact with the inner wall of the stainless steel bent pipe (1001).

8. The stainless steel elbow joint processing and forming equipment according to claim 7 is characterized in that: Abutment blocks (8032) are provided below the first hinge seat (8015) and the second hinge seat (8026), and the abutment blocks (8032) are fixedly connected to the positioning column (8033).

9. The stainless steel elbow joint processing and forming equipment according to claim 8, characterized in that: The grinding drive structure (6) comprises a grinding motor placement frame (601) placed on the top surface of the chassis (4), a grinding motor (602) is placed inside the grinding motor placement frame (601), an output shaft of the grinding motor (602) is fixedly connected with a plug connector (603), and the plug connector (603) is interference fit with the sliding column (8021).

10. The stainless steel elbow joint processing and forming equipment according to claim 9, characterized in that: The outer surfaces of the first polishing positioning block (8017) and the second polishing positioning block (8028) are coated with polishing paint.

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