Pipe weld correction device

Abstract

This invention relates to the field of pipe fitting processing technology, specifically a pipe fitting weld correction device. It includes a worktable and a fixed base, a swing frame, a swing correction mechanism, a pipe pressing mechanism, and a clamping mechanism mounted on the worktable. The swing frame is located inside the fixed base, with both ends connected to the fixed base via connecting bushings. The swing correction mechanism drives the swing frame to swing relative to the fixed base. Two parallel guide shafts and a movable base sleeved on and slidably connected to the two guide shafts are disposed inside the swing frame. The pipe pressing mechanism is mounted on the movable base, and the clamping mechanism is located on the side where the pipe fitting enters the pipe pressing mechanism and is mounted on the movable base. The swing correction structure and clamping mechanism of this invention can correct the position of the pipe fitting weld, ensuring the subsequent internal leveling quality of the pipe fitting. The third limit switch provides dual protection, preventing equipment damage and improving the equipment's service life.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting processing technology, specifically a pipe fitting weld seam correction device. Background Technology

[0002] After industrial welded pipes are formed, weld seams will exist on the inner wall of the steel pipe, and the interior is relatively rough, making it unsuitable for direct application in the pipeline industry. Therefore, before use, a leveling machine is needed to level the weld seams on the inner wall of the steel pipe. However, during the leveling process of the pipe fittings, it was found that the weld seam directions of different pipe fittings are different. If the position of the weld seam is not corrected, the different stress on the weld seam will affect the subsequent internal leveling effect of the pipe fittings. Therefore, this application designs a correction device with weld seam correction function to ensure the quality of subsequent internal leveling of pipe fittings. Summary of the Invention

[0003] The purpose of this invention is to provide a pipe fitting weld seam correction device. Through the sway correction structure and clamping mechanism of this invention, the position of the pipe fitting weld seam can be corrected, ensuring the subsequent internal leveling quality of the pipe fitting. The design of the stroke limit mechanism allows for precise control of the reciprocating motion of the moving seat. Furthermore, the third limit switch of this invention provides dual protection, maximizing the reciprocating stroke of the moving seat in case of a failure of the first limit switch, preventing equipment damage and extending the equipment's service life. The clamping mechanism can adjust the distance between the two clamping wheels to ensure that the pipe fitting's conveying direction and weld seam direction are aligned with the top clamping groove of the lower pressure wheel. The clamping wheels also clamp the pipe fitting, significantly improving the subsequent internal leveling effect of the pipe fitting weld seam.

[0004] To solve the above-mentioned technical problems, the present invention provides a pipe fitting weld correction device, including a worktable and a fixed base, a swing frame, a swing correction mechanism, a pipe pressing mechanism and a clamping mechanism disposed on the worktable. The swing frame is located inside the fixed base and both ends are connected to the fixed base through connecting bushings. The swing correction mechanism drives the swing frame to swing relative to the fixed base.

[0005] The yaw correction mechanism includes a movable rod drive, a movable rod, and a rotating arm. The movable rod drive is connected to the upper end of the movable rod and drives it to rotate. A bushing is fitted on the lower end of the movable rod, and a fixing block is fitted on the outer side of the bushing. The fixing block is fixed to the fixing seat through a connecting seat. A connecting block is fitted on the movable rod and threadedly connected to it. There are two rotating arms, which are respectively arranged on both sides of the connecting block. One end of each rotating arm is movably connected to the connecting block, and the other end is fixed to the yaw frame.

[0006] The inner side of the sway frame is provided with two parallel guide shafts and a movable seat sleeved on the two guide shafts and slidably connected thereto. The pressing mechanism is disposed on the movable seat, and the clamping mechanism is disposed on one side of the pressing mechanism and mounted on the movable seat.

[0007] Furthermore, the pipe pressing mechanism includes a mounting plate, a pressure plate, a cylinder drive, an upper pressure roller, and a lower pressure roller. The mounting plate is disposed above the movable seat and connected to it by a fixed shaft. The pressure plate is located between the mounting plate and the movable seat and is sleeved on the fixed shaft. The cylinder drive is mounted on the mounting plate, and its output end passes through the mounting plate and is connected to the pressure plate. The upper pressure roller is mounted at the bottom of the pressure plate, and the lower pressure roller is located below the upper pressure roller and is mounted in the movable seat through a connecting shaft. The cylinder drive drives the upper pressure roller to press down and cooperate with the lower pressure roller to press the pipe fitting.

[0008] Furthermore, the clamping mechanism includes a mounting base, a forward and reverse threaded screw, a slider, and a clamping wheel. The mounting base is fixed to the movable seat by bolts. A limiting plate is provided on one side of the mounting base. A threaded sleeve that is threadedly connected to the limiting plate passes through the limiting plate. A first adjusting nut is provided on the threaded sleeve. One end of the forward and reverse threaded screw passes through the threaded sleeve and extends into the mounting base, while the other end is fixed by an adjusting fastening assembly.

[0009] The slider has two parts and is respectively mounted on the positive and negative teeth of the positive and negative tooth screws, and the clamping wheel has two parts and is respectively mounted on the slider via a rotating shaft.

[0010] Furthermore, the adjusting fastening assembly includes a washer, a rotating sleeve, and a second adjusting nut. The washer is fitted to the threaded sleeve, the second adjusting nut is disposed between the washer and the rotating sleeve, the second adjusting nut is threadedly connected to the positive and negative threaded screw, and the rotating sleeve is connected to the positive and negative threaded screw via a key.

[0011] Furthermore, the pipe fitting weld correction device also includes a clamping mechanism limiting device, which includes a sensing plate, an upper fixed plate, a lower fixed plate, a manual handle, a limiting slider, and a first limiting switch. The sensing plate is fixedly disposed on one side of the pressure plate. The upper and lower fixed plates are arranged side by side and respectively fixedly disposed on one side of the mounting plate and the movable seat. A lead screw and a light shaft are arranged vertically side by side between the upper and lower fixed plates. The upper end of the lead screw passes through the upper fixed plate and is connected to the manual handle. The limiting slider is sleeved on the lead screw and the light shaft and is threadedly connected to the lead screw and movably connected to the light shaft, respectively. The first limiting switch is fixedly disposed on the limiting slider and senses the sensing plate.

[0012] Furthermore, the yaw frame is also equipped with a travel limiting mechanism, which is disposed opposite to the yaw correction mechanism. The travel limiting mechanism includes a limit sensing block, a limit fixing plate, and a limit switch.

[0013] The limit sensing block is fixedly mounted on the movable seat, and the limit fixing plate is fixedly mounted on the swing frame. The limit fixing plate is provided with two locking plates, and each locking plate is provided with a limit mounting plate. The limit mounting plate is provided with two sets of limit switches, and the two sets of limit switches are respectively connected to the limit sensing block.

[0014] Furthermore, the limit switch includes a second limit switch and a third limit switch that are staggered vertically, with the third limit switch located outside the second limit switch.

[0015] Furthermore, a drive cylinder is connected to one side of the movable seat. The drive cylinder passes through the fixed seat and is mounted on the tilting frame, with its output end extending into the tilting frame and connected to the movable seat.

[0016] Furthermore, the upper pressure roller is mounted on the bottom of the pressure plate via a pressure roller deflector bracket, and the upper pressure roller and the pressure roller deflector bracket are connected by a mounting shaft.

[0017] Furthermore, there are four fixed shafts, which are respectively arranged at the four corners of the movable seat, and the mounting plate is fixed to the upper end of the fixed shafts.

[0018] The beneficial effects of this invention are:

[0019] 1. The yaw correction structure and clamping mechanism of the present invention can correct the position of the pipe fitting weld, ensuring the leveling quality of the pipe fitting weld in subsequent internal leveling. Specifically, the movable rod is driven to rotate by the movable rod drive component, and the synchronous connecting block can move up or down on the movable rod. The rotating arms on both sides drive the yaw frame to swing around the connecting shaft sleeve, and indirectly cause the clamping mechanism and the moving seat to swing. At this time, the position of the pipe fitting weld is adjusted by the swing angle, so that the direction of the weld is on the same straight line as the clamping groove at the top of the lower pressure roller. Then the rotation of the movable rod is stopped, and the pipe fitting is clamped by the clamping mechanism. Then the upper pressure roller is driven to press down by the drive cylinder drive component to clamp the pipe fitting. The weld of the pipe fitting can get direct contact and clamping between the upper pressure roller and the lower pressure roller, which can greatly improve the subsequent internal leveling quality of the pipe fitting.

[0020] 2. The design of the clamping mechanism's limiting device can accurately control the downward movement of the pressure plate and the upper pressure roller, avoiding excessive stroke that could damage the pipe fittings and indirectly improving the internal leveling quality of the pipe fittings.

[0021] 3. Through the design of the travel limit mechanism, the travel of the reciprocating motion of the moving seat can be accurately controlled. Moreover, the third limit switch of this invention can play a dual protection role. When the second limit switch fails, it can limit the reciprocating travel of the moving seat to the maximum extent, avoid damage to the equipment, and improve the service life of the equipment. In addition, it can be alarmed by the alarm system installed to remind the safety officer to inspect the limit switch, thus reminding the limit switch to be inspected.

[0022] 4. The clamping mechanism of the present invention can ensure that the conveying direction of the pipe fitting after clamping is in line with the top clamping groove of the lower pressure wheel by adjusting the distance between the two clamping wheels. This improves the leveling effect of the pipe fitting weld seam leveling by the mandrel under the pressure of the clamping mechanism. When correcting the sway of the pipe fitting weld seam, the clamping mechanism of the present invention plays the role of positioning the weld seam and clamping the pipe fitting. Specifically, by controlling the connecting block of the sway correction mechanism to move up or down on the movable rod, the rotating arms on both sides drive the sway frame to rotate around the connecting shaft sleeve, and indirectly cause the clamping mechanism and the moving seat to swing. When the clamping mechanism swings a certain angle until the direction of the pipe fitting weld seam and the top clamping groove of the lower pressure wheel are in line, the distance between the clamping wheels is then finely adjusted so that the two clamping wheels clamp the pipe fitting. Then, the second adjusting nut is tightened, which ensures the quality of subsequent leveling of the pipe fitting weld seam. Attached Figure Description

[0023] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the pipe fitting weld correction device of the present invention from the front view direction;

[0025] Figure 2 This is a rear view schematic diagram of the pipe fitting weld correction device of the present invention;

[0026] Figure 3 yes Figure 2 A sectional view;

[0027] Figure 4 This is a schematic diagram of the clamping mechanism of the present invention;

[0028] Figure 5 This is a cross-sectional view of the clamping mechanism of the present invention;

[0029] In the diagram: 1-Workbench, 2-Fixed seat, 3-Sway frame, 4-Sway correction mechanism, 5-Pressing tube mechanism, 6-Clamping mechanism, 7-Connecting bushing, 8-Guide shaft, 9-Moving seat, 10-Pressure mechanism limiting device, 11-Stroke limiting mechanism, 12-Drive cylinder, 41-Moving rod drive component, 42-Moving rod, 43-Rotating arm, 44-Bushing sleeve, 45-Fixed block, 46-Connecting seat, 47-Connecting block, 51-Mounting plate, 52-Pressure plate, 53-Cylinder drive component, 54-Upper pressure roller, 55-Lower pressure roller, 56-Fixed shaft, 57-Pressure roller sway frame, 58-Connecting shaft, 61-Mounting seat, 62- - Lead screw, 63- Slider, 64- Clamping wheel, 65- Limit plate, 66- Threaded sleeve, 67- First adjusting nut, 68- Rotating shaft, 69- Washer, 610- Rotating sleeve, 611- Second adjusting nut, 101- Sensing plate, 102- Upper fixing plate, 103- Lower fixing plate, 104- Manual handle, 105- Limit slider, 106- First limit switch, 107- Lead screw, 108- Optical axis, 111- Limit sensing block, 112- Limit fixing plate, 113- Locking plate, 114- Limit mounting plate, 115- Second limit switch, 116- Third limit switch, 1121- Waist-shaped hole. Detailed Implementation

[0030] The technical solutions in 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.

[0031] In one specific embodiment of the present invention, such as Figure 1-5 As shown, a pipe fitting weld correction device includes a workbench 1 and a fixed base 2, a swing frame 3, a swing correction mechanism 4, a pipe pressing mechanism 5 and a clamping mechanism 6 disposed on the workbench 1. The swing frame 3 is located inside the fixed base 2 and both ends are connected to the fixed base 2 through connecting bushings 7. The swing correction mechanism 4 drives the swing frame 3 to swing relative to the fixed base 2.

[0032] The yaw correction mechanism 4 includes a movable rod drive 41, a movable rod 42, and a rotating arm 43. The movable rod drive 41 is connected to the upper end of the movable rod 42 and drives it to rotate. The lower end of the movable rod 42 is fitted with a bushing 44. A fixing block 45 is fitted on the outside of the bushing 44. The fixing block 45 is fixed to the fixing seat 2 through a connecting seat 46. A connecting block 47 is fitted on the movable rod 42 and threadedly connected to it. There are two rotating arms 43, which are respectively arranged on both sides of the connecting block 47. One end of each rotating arm 43 is movably connected to the connecting block 47, and the other end is fixed to the yaw frame 3.

[0033] Specifically, in this embodiment, the movable rod drive can be a handle. By rotating the handle, the movable rod is rotated, which synchronously drives the connecting block to move up or down on the movable rod. The synchronous rotating arm drives the swing frame to swing around the connecting shaft sleeve, and indirectly drives the clamping mechanism and the moving seat to swing. At this time, the position of the pipe fitting weld is adjusted by the swing angle, so that the position of the pipe fitting weld is in the clamping groove of the upper pressure roller and the lower pressure roller, which facilitates the subsequent internal leveling of the pipe fitting and improves the quality of the internal leveling of the pipe fitting.

[0034] Two parallel guide shafts 8 are provided on the inner side of the swing frame 3, and a movable seat 9 is sleeved on the two guide shafts 8 and slidably connected to them. A drive cylinder 12 is connected to one side of the movable seat 9. The drive cylinder 12 passes through the fixed seat 2 and is installed on the swing frame 3, and its output end extends into the swing frame 3 and is connected to the movable seat 9. The pipe pressing mechanism 5 is set on the movable seat 9, and the clamping mechanism 6 is set on the side where the pipe enters the pipe pressing mechanism and is installed on the movable seat 9.

[0035] The pipe pressing mechanism 5 includes a mounting plate 51, a pressing plate 52, a cylinder drive component 53, an upper pressing roller 54, and a lower pressing roller 55. The mounting plate 51 is disposed above the movable seat 9 and connected to it by a fixed shaft 56. The pressing plate 52 is located between the mounting plate 51 and the movable seat 9 and is sleeved on the fixed shaft 56. In this embodiment, there are four fixed shafts 56, which are respectively disposed at the four corners of the movable seat 9. The mounting plate 51 is fixed to the upper end of the fixed shaft 56, and the cylinder drive component 53 is mounted on the mounting plate. The upper pressure roller 54 is mounted on the bottom of the pressure plate 52 through the pressure roller tilting bracket 57. The upper pressure roller 54 and the pressure roller tilting bracket 57 are connected by the mounting shaft. The lower pressure roller 55 is located below the upper pressure roller 54 and is mounted in the movable seat 9 through the connecting shaft 58. Both the upper pressure roller 11 and the lower pressure roller 12 are provided with clamping grooves for clamping pipe fittings. The cylinder drive component 53 drives the upper pressure roller 54 to press down and cooperate with the lower pressure roller 55 to clamp the pipe fittings.

[0036] The pipe fitting weld correction device also includes a clamping mechanism limiting device 10. The clamping mechanism limiting device 10 includes a sensing plate 101, an upper fixed plate 102, a lower fixed plate 103, a manual handle 104, a limiting slider 105, and a first limiting switch 106. The sensing plate 101 is fixedly disposed on one side of the pressure plate 52. The upper fixed plate 102 and the lower fixed plate 103 are arranged side by side and respectively fixedly disposed on one side of the mounting plate 51 and the movable seat 9. A vertically arranged lead screw 107 and an optical shaft 108 are passed between the upper fixed plate 102 and the lower fixed plate 103. The upper end of the lead screw 107 passes through the upper fixed plate 102 and is connected to the manual handle 104. The limiting slider 105 is sleeved on the lead screw 107 and the optical shaft 108, and is threadedly connected to the lead screw 107 and movably connected to the optical shaft 108, respectively. The first limiting switch 106 is fixedly disposed on the limiting slider 105 and senses the sensing plate 101.

[0037] By designing a limiting device for the clamping mechanism, the stroke of the pressure plate driving the upper pressure roller downward can be precisely controlled, avoiding excessive stroke that could damage the pipe fittings and indirectly improving the internal leveling quality of the pipe fittings.

[0038] The sway frame 3 is also equipped with a travel limit mechanism 11, which is arranged opposite to the sway correction mechanism 4. The travel limit mechanism 11 includes a limit sensing block 111, a limit fixing plate 112, and a limit switch. The limit sensing block 111 is fixedly mounted on the movable seat 9, and the limit fixing plate 112 is fixedly mounted on the sway frame 3. The limit fixing plate 112 has an oblong hole 1121. The design of this oblong hole allows for flexible adjustment of the installation position of the two locking plates according to the travel requirements of the movable seat, and the two locking plates 113 are fixed to the limit fixing plate 112 by bolts. Each locking plate 113 has... Each component is equipped with a limit mounting plate 114 and is fixed together by bolts. The limit mounting plate 114 is equipped with two sets of limit switches, which are respectively sensed by the limit sensing block 111. Specifically, the two sets of limit switches include a second limit switch 115 and a third limit switch 116 that are staggered vertically. The third limit switch 116 is located outside the second limit switch 115. The mounting holes of the second limit switch 115 and the third limit switch 116 are both oblong holes, which can adjust the installation position between the second limit switch 115 and the third limit switch 116 to achieve the purpose of accurately controlling the reciprocating motion stroke of the moving seat.

[0039] Furthermore, the third limit switch 116 of the present invention can play a dual protection role. When the second limit switch 115 fails, it can limit the reciprocating stroke of the moving seat 9 to the maximum extent, avoid damage to the equipment, and improve the service life of the equipment. Moreover, during the specific installation process, the present invention can also be alarmed by installing an alarm system that reminds the safety officer to inspect the limit switch, thus reminding the second limit switch to be inspected.

[0040] like Figure 4-5The clamping mechanism 6 includes a mounting base 61, a forward and reverse threaded screw 62, a slider 63, and a clamping wheel 64. The mounting base 61 is fixed to the movable base 9 by bolts. A limiting plate 65 is provided on one side of the mounting base 61. A threaded sleeve 66 is threadedly connected to the limiting plate 65. A first adjusting nut 67 is provided on the threaded sleeve 66. One end of the forward and reverse threaded screw 62 passes through the threaded sleeve 66 and extends into the mounting base 61, while the other end is fixed by an adjusting fastening assembly. There are two sliders 63, which are respectively mounted on the forward and reverse threaded screw 62. On the positive and negative threads of the screw 62, each slider 63 is slidably connected to the mounting base 61. There are two clamping wheels 64, which are respectively mounted on the slider 63 via rotating shafts 68. The adjusting fastening assembly includes a shim 69, a rotating sleeve 610, and a second adjusting nut 611. The shim 69 is set to fit against the threaded sleeve 66. The second adjusting nut 611 is set between the shim 69 and the rotating sleeve 610. The second adjusting nut 611 is threadedly connected to the positive and negative thread screw 62. The rotating sleeve 610 is connected to the positive and negative thread screw 62 via a key.

[0041] Specifically, to ensure that the centers of the two clamping wheels of the clamping mechanism are aligned with the top clamping groove of the lower pressure wheel of the pressing mechanism, the adjustment process is as follows: First, by rotating the threaded sleeve, the positive and negative threaded screws are rotated, causing the two sliders on the positive and negative threaded screws to move away from or closer to each other, thus adjusting the distance between the two clamping wheels. Then, the first adjusting nut is used to lock the distance. Next, the fastening assembly is used for fine-tuning. Specifically, rotating the rotating sleeve drives the positive and negative threaded screws to rotate, thereby fine-tuning the distance between the clamping wheels. Finally, the second adjusting nut is used to lock the distance.

[0042] In addition, when the pipe fitting enters the sway frame and it is found that the weld seam on the pipe fitting is not in the same straight line as the direction of the clamping groove at the top of the pressure roller, loosen the second adjusting nut, fine-tune the distance between the clamping rollers, and then, under the operation of the sway correction mechanism, make the clamping mechanism swing at a certain angle until the weld seam of the pipe fitting is in the same straight line as the direction of the clamping groove at the top of the pressure roller. Then, fine-tune the distance between the clamping rollers so that the two clamping rollers clamp the pipe fitting, and then tighten it with the second adjusting nut. This will ensure the quality of the subsequent leveling of the weld seam of the pipe fitting.

[0043] The tubular component of the present invention passes through the through hole of the connecting bushing, enters the fixed seat and then enters the swing frame, passes through the clamping mechanism and enters the movable seat, and is pressed by the upper and lower pressure rollers;

[0044] The weld seam correction process for the pipe fitting is as follows: rotating the handle drives the movable rod to rotate, which in turn drives the connecting block to move up or down on the movable rod. Simultaneously, the rotating arm drives the swing frame to swing around the connecting shaft sleeve, and indirectly causes the clamping mechanism and the moving seat to swing at a certain angle, so that the weld seam can be aligned with the top clamping groove of the lower pressure roller. Then, the rotation of the movable rod is stopped, and the pipe fitting after weld seam adjustment is clamped by the clamping mechanism. At this time, the weld seam of the pipe fitting can be directly clamped by the clamping grooves of the upper and lower pressure rollers. With the subsequent rotation of the mandrel inside the pipe fitting, the internal leveling effect of the pipe fitting weld seam can be greatly improved.

[0045] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A pipe fitting weld seam correction device, characterized in that, It includes a workbench (1) and a fixed seat (2), a swing frame (3), a swing correction mechanism (4), a pipe pressing mechanism (5) and a clamping mechanism (6) mounted on the workbench (1). The swing frame (3) is located inside the fixed seat (2) and both ends are connected to the fixed seat (2) through connecting bushings (7). The swing correction mechanism (4) drives the swing frame (3) to swing relative to the fixed seat (2). The yaw correction mechanism (4) includes a movable rod drive (41), a movable rod (42), and a rotating arm (43). The movable rod drive (41) is connected to the upper end of the movable rod (42) and drives it to rotate. A bushing (44) is sleeved on the lower end of the movable rod (42). A fixing block (45) is sleeved on the outer side of the bushing (44). The fixing block (45) is fixed to the fixing seat (2) through a connecting seat (46). A connecting block (47) is sleeved on the movable rod (42) and threadedly connected to it. There are two rotating arms (43) respectively arranged on both sides of the connecting block (47). One end of each rotating arm (43) is movably connected to the connecting block (47), and the other end is fixed to the yaw frame (3). The inner side of the swing frame (3) is provided with two parallel guide shafts (8) and a movable seat (9) sleeved on the two guide shafts (8) and slidably connected thereto. The pressing mechanism (5) is provided on the movable seat (9). The clamping mechanism (6) is provided on one side of the pressing mechanism and installed on the movable seat (9). The clamping mechanism (6) includes a mounting base (61), a positive and negative threaded screw (62), a slider (63), and clamping wheels (64). The mounting base (61) is fixed to the movable base (9) by bolts. A limiting plate (65) is provided on one side of the mounting base (61). A threaded sleeve (66) threadedly connected to the limiting plate (65) is provided inside the limiting plate (65). A first adjusting nut (67) is provided on the threaded sleeve (66). One end of the positive and negative threaded screw (62) passes through the threaded sleeve (66) and extends into the mounting base (61). The other end is fixed by an adjusting fastening assembly. There are two sliders (63) and they are respectively installed on the positive and negative threads of the positive and negative threaded screws (62). There are two clamping wheels (64) and they are respectively installed on the sliders (63) by a rotating shaft (68). The adjusting fastening assembly includes a washer (69), a rotating sleeve (610), and a second adjusting nut (611). The washer (69) is fitted to the threaded sleeve (66). The second adjusting nut (611) is disposed between the washer (69) and the rotating sleeve (610). The second adjusting nut (611) is threadedly connected to the positive and negative threaded screw (62). The rotating sleeve (610) is connected to the positive and negative threaded screw (62) by a key.

2. The pipe fitting weld correction device according to claim 1, characterized in that, The pipe pressing mechanism (5) includes a mounting plate (51), a pressure plate (52), a cylinder drive (53), an upper pressure roller (54), and a lower pressure roller (55). The mounting plate (51) is located above the movable seat (9) and connected to it by a fixed shaft (56). The pressure plate (52) is located between the mounting plate (51) and the movable seat (9) and is sleeved on the fixed shaft (56). The cylinder drive (53) is mounted on the mounting plate (51) and its output end passes through the mounting plate (51) and is connected to the pressure plate (52). The upper pressure roller (54) is mounted at the bottom of the pressure plate (52). The lower pressure roller (55) is located below the upper pressure roller (54) and is mounted in the movable seat (9) through a connecting shaft (58). The cylinder drive (53) drives the upper pressure roller (54) to press down and cooperate with the lower pressure roller (55) to press the pipe.

3. The pipe fitting weld correction device according to claim 2, characterized in that, The pipe fitting weld correction device also includes a clamping mechanism limiting device (10), which includes a sensing plate (101), an upper fixing plate (102), a lower fixing plate (103), a manual handle (104), a limiting slider (105), and a first limiting switch (106). The sensing plate (101) is fixedly disposed on one side of the pressure plate (52). The upper fixing plate (102) and the lower fixing plate (103) are arranged side by side and respectively fixedly disposed on one side of the mounting plate (51) and the movable seat (9). A lead screw (107) and an optical axis (108) are arranged vertically and side by side between the 02) and the lower fixed plate (103). The upper end of the lead screw (107) passes through the upper fixed plate (102) and is connected to the manual handle (104). The limiting slider (105) is sleeved on the lead screw (107) and the optical axis (108), and is threadedly connected to the lead screw (107) and movably connected to the optical axis (108), respectively. The first limit switch (106) is fixedly installed on the limiting slider (105) and senses the sensing plate (101).

4. The pipe fitting weld correction device according to claim 1, characterized in that, The sway frame (3) is also provided with a travel limit mechanism (11), which is arranged opposite to the sway correction mechanism (4). The travel limit mechanism (11) includes a limit sensing block (111), a limit fixing plate (112), and a limit switch. The limit sensing block (111) is fixedly mounted on the movable seat (9), and the limit fixing plate (112) is fixedly mounted on the swing frame (3). The limit fixing plate (112) is provided with two locking plates (113), and each locking plate (113) is provided with a limit mounting plate (114). The limit mounting plate (114) is provided with two sets of limit switches, and the two sets of limit switches are respectively sensing the limit sensing block (111).

5. A pipe fitting weld seam correction device according to claim 4, characterized in that, The limit switch includes a second limit switch (115) and a third limit switch (116) that are staggered vertically, with the third limit switch (116) located outside the second limit switch (115).

6. The pipe fitting weld correction device according to claim 1, characterized in that, A drive cylinder (12) is connected to one side of the movable seat (9). The drive cylinder (12) passes through the fixed seat (2) and is installed on the swing frame (3), and its output end extends into the swing frame (3) and is connected to the movable seat (9).

7. A pipe fitting weld seam correction device according to claim 2, characterized in that, The upper pressure roller (54) is installed at the bottom of the pressure plate (52) via a pressure roller deflector (57), and the upper pressure roller (54) and the pressure roller deflector (57) are connected by a mounting shaft.

8. A pipe fitting weld seam correction device according to claim 2, characterized in that, The fixed shaft (56) has four shafts and is respectively located at the four corners of the movable seat (9), and the mounting plate (51) is fixed to the upper end of the fixed shaft (56).

Images