Pipe end flatness calibration tool for spiral welded pipe

Abstract

The utility model relates to the technical field of welded pipe machining, in particular to a spiral welded pipe end flatness calibration tool which comprises a roll shaft conveyor, a driving assembly, a clamping part, a clamping mechanism and a lifting assembly. A clamping mechanism is arranged above the roll shaft conveyor, and supporting rods extending towards the roll shaft conveyor are arranged at the two ends of the inner side of the clamping mechanism; the number of the clamping parts is two, and the two clamping parts are installed at the bottom end of the supporting rod correspondingly and symmetrically arranged. When the clamping mechanism drives the clamping part to clamp the spiral welded pipe, the clamping part limits the moving direction of the spiral welded pipe through the two moving wheels at the two ends, so that the spiral welded pipe is perpendicular to the polisher, the accuracy of flatness calibration of the pipe end of the spiral welded pipe is improved, and the production efficiency is improved. And meanwhile, the moving wheels at the ends of the clamping parts are driven by the driving assemblies to rotate, so that the moving wheels drive the clamped spiral welded pipe to move in the length direction, and the pipe end of the spiral welded pipe is continuously machined.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe processing, in particular to a spiral welded pipe end flatness calibration tool. Background Art

[0002] Spiral welded pipe is made by rolling low-carbon carbon structural steel or low-alloy structural steel strip into a tube blank at a certain spiral angle, and then welding the tube seams together. It can produce large-diameter steel pipes with narrower strip steel.

[0003] Chinese patent document with authorization publication number CN216830047U discloses a pipe end grinding device for spiral seam welded pipe production. The device uses two sets of clamping hydraulic cylinders to position and clamp the spiral seam welded pipe, making the positioning and clamping of the spiral seam welded pipe more reliable, thereby realizing automatic positioning and clamping of the spiral seam welded pipe, reducing the time used for clamping, improving production efficiency, and ensuring the quality of pipe end grinding.

[0004] However, when the above scheme is used, the pipe is clamped and fixed by pressing the end of the spiral seam welded pipe against the abrasive part at the front end of the grinding head, and the movable clamp is driven by the hydraulic cylinder to move toward the fixed clamping plate, resulting in a fixed grinding amount for a single time. When the pipe end is uneven, the grinding of the spiral seam welded pipe end requires stopping the machine to adjust the weld position, and the weld end must be pressed against the abrasive part at the front end of the grinding head again before the grinding work can be continued, which makes it inconvenient to calibrate the flatness of the spiral welded pipe end. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a spiral welded pipe end flatness calibration tool.

[0006] The technical solution of the utility model is: a spiral welded pipe end flatness calibration tool, comprising a roller conveyor, a drive assembly, a clamping part, a clamping mechanism and a lifting assembly;

[0007] A clamping mechanism is provided above the roller conveyor, and support rods extending toward the roller conveyor are provided at both ends of the inner side of the clamping mechanism;

[0008] There are two clamping parts, which are respectively installed at the bottom ends of the support rods and are symmetrically arranged; the driving assembly is installed at one end of the clamping part;

[0009] There are two lifting assemblies, which are respectively located on one side of the roller conveyor and connected to the end of the clamping mechanism.

[0010] Preferably, the clamping portion includes a connecting rod, a bearing rotating rod and a moving wheel;

[0011] The connecting rod is installed at the bottom end of the supporting rod;

[0012] There are two rotating rods, which are rotatably mounted on one end of the connecting rod through bearings;

[0013] There are multiple moving wheels, and each of the multiple moving wheels is fixedly mounted on one end of the rotating rod.

[0014] Preferably, the rotation direction of the moving wheel is parallel to the length direction of the roller conveyor, and the diameter of the moving wheel is larger than the end size of the connecting rod.

[0015] Preferably, the drive assembly comprises a toothed pulley, a toothed belt and a second motor;

[0016] The second motor is mounted on the connecting rod;

[0017] There are at least two toothed belt pulleys, which are respectively mounted on the rotating rod and the output shaft of the second motor;

[0018] The toothed belt is installed on the outside of the two toothed belt wheels and is meshed with the toothed belt wheels.

[0019] Preferably, the clamping mechanism includes a mounting housing, an adjustment assembly, and a first motor;

[0020] The mounting shell is arranged above the roller conveyor and parallel to the roller shaft of the roller conveyor;

[0021] The adjustment component is arranged on the inner side of the mounting shell, and one end of the adjustment component extends to the outer side of the mounting shell;

[0022] The first motor is mounted on the outer side of the end portion of the mounting shell and is transmission-connected to the adjusting assembly.

[0023] Preferably, the adjustment assembly includes a rotating shaft and a moving block;

[0024] The rotating shaft is rotatably mounted on the inner side of the mounting shell and one end of the rotating shaft extends to the outer side of the mounting shell and is transmission-connected to the first motor;

[0025] There are two moving blocks, which are sleeved on the outer side of the rotating shaft and slidably connected to the inner wall of the mounting shell, and the bottom ends of the moving blocks are connected to the supporting rods.

[0026] Preferably, both ends of the rotating shaft have threads, and the threads at both ends of the rotating shaft are arranged symmetrically according to the center of the mounting shell. When the rotating shaft and the moving block are in a mating installation state, the moving block is fitted over the threads at the end of the rotating shaft.

[0027] Preferably, the lifting assembly includes a hydraulic cylinder, a connecting cap and a sleeve;

[0028] The connecting cap is mounted on the end of the mounting shell;

[0029] The sleeve is installed at the bottom end of the connecting cap;

[0030] The hydraulic cylinders are inserted into the inner side of the casing and are located on both sides of the roller conveyor.

[0031] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0032] When the utility model drives the clamping part to clamp the spiral welded pipe through the clamping mechanism, the clamping part limits the moving direction of the spiral welded pipe through two moving wheels at both ends, so that the spiral welded pipe is arranged vertically to the grinder, thereby improving the accuracy of the flatness calibration of the pipe end of the spiral welded pipe. At the same time, the driving component drives the moving wheel at the end of the clamping part to rotate, so that the moving wheel drives the clamped spiral welded pipe to move in the length direction, so that the pipe end of the spiral welded pipe can be continuously processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a three-dimensional diagram of an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the connection structure of the clamping mechanism, lifting assembly and clamping part in an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the connection structure between the drive assembly and the clamping part in an embodiment of the present invention.

[0036] Figure 4 This is an exploded schematic diagram of the clamping mechanism structure in an embodiment of the present invention.

[0037] Figure numerals: 1. Roller conveyor; 2. First motor; 3. Drive assembly; 31. Toothed pulley; 32. Toothed belt; 33. Second motor; 4. Clamping part; 41. Connecting rod; 42. Bearing; 43. Rotating rod; 44. Moving wheel; 5. Hydraulic cylinder; 6. Clamping mechanism; 61. Mounting shell; 62. Rotating shaft; 63. Moving block; 64. Support rod; 7. Connecting cap; 8. Sleeve. DETAILED DESCRIPTION

[0038] Example 1

[0039] like Figure 1-4 As shown, the utility model proposes a spiral welded pipe end flatness calibration tool, comprising a roller conveyor 1, a drive assembly 3, a clamping portion 4, a clamping mechanism 6 and a lifting assembly;

[0040] A clamping mechanism 6 is provided above the roller conveyor 1. Support rods 64 extending toward the roller conveyor 1 are provided at both ends of the inner side of the clamping mechanism 6. The roller conveyor 1 is shown schematically in the figure for its rollers only. The roller conveyor 1 has multiple rollers that are arranged equidistantly in the horizontal direction and are rotatably mounted by means of a support frame and a bearing seat. Chain drive structures and motors can also be installed at the ends of the rollers to rotate the multiple rollers synchronously.

[0041] There are two clamping parts 4, which are respectively mounted at the bottom ends of the support rod 64 and arranged symmetrically; the driving assembly 3 is mounted at one end of the clamping part 4;

[0042] There are two lifting assemblies, and the two lifting assemblies are respectively located on one side of the roller conveyor 1 and connected to the end of the clamping mechanism 6 .

[0043] In this embodiment, the spiral welded pipe is supported and conveyed by the roller conveyor 1, so that it is conveyed to the grinder, and the position of the clamping mechanism 6 is adjusted up and down by the lifting component, so that the clamping part 4 moves to the middle of the spiral welded pipe, and the middle of the clamping part 4 is aligned with the middle of the horizontal position of the spiral welded pipe. At the same time, the clamping mechanism 6 drives the two support rods 64 to move synchronously toward the spiral welded pipe, and the support rods 64 drive the clamping part 4 to contact the spiral welded pipe, and the contact point is away from the horizontal center position of the spiral welded pipe, so that the two clamping parts 4 are driven by the clamping mechanism 6 to fix the spiral welded pipe on the roller conveyor 1, and during the processing, the driving component 3 drives the clamping part 4 to work, so that the clamping part 4 drives the spiral welded pipe to move on the roller conveyor 1 toward the grinder, so that the pipe end of the spiral welded pipe is continuously processed, avoiding the problem of a small single processing volume requiring shutdown for adjustment and fixation.

[0044] Example 2

[0045] like Figure 3 As shown, the present invention proposes a spiral welded pipe end flatness calibration tool. Compared with the first embodiment, in this embodiment, the clamping portion 4 includes a connecting rod 41, a bearing 42, a rotating rod 43 and a moving wheel 44;

[0046] The connecting rod 41 is mounted on the bottom end of the support rod 64. The connecting rod 41 is U-shaped and is used to keep the connecting rod 41 away from the spiral welded pipe when in use, so as to prevent the connecting rod 41 from contacting the middle of the spiral welded pipe and causing the moving wheel 44 to be unable to connect with the moving wheel 44.

[0047] There are two rotating rods 43, and the two rotating rods 43 are rotatably mounted on one end of the connecting rod 41 through bearings 42;

[0048] There are multiple moving wheels 44, and the multiple moving wheels 44 are fixedly installed on one end of the rotating rod 43. The rotating rod 43 and the moving wheels 44 at both ends are arranged in an I-shape to avoid the two moving wheels 44 being away from the horizontal middle of the spiral welded pipe and contacting it.

[0049] It should be noted that the rotation direction of the moving wheel 44 is parallel to the length direction of the roller conveyor 1, wherein, when in use, the rotation direction of the moving wheel 44 is perpendicular to the direction of the force generated between the spiral welded pipe and the grinder, so that the moving wheel 44 has friction between the spiral welded pipe, and the diameter of the moving wheel 44 is larger than the end size of the connecting rod 41, which is used to process pipes of different diameters when in use to avoid contact between the pipe and the connecting rod 41.

[0050] In this embodiment, by making the rotation direction of the moving wheel 44 perpendicular to the direction of the force generated between the spiral welded pipe and the grinder, the moving wheel 44 has friction between the spiral welded pipe, and the clamping force and friction force are used to block the rotational force generated between the spiral welded pipe and the grinder. At the same time, the driving component 3 drives the rotating rod 43 to drive the moving wheel 44 to rotate, so that the moving wheel 44 drives the spiral welded pipe to move toward the grinder, so that the spiral welded pipe can be continuously processed. Secondly, by making the two ends of the connecting rod 41 have an I-shaped rotating rod 43 and two moving wheels 44, the moving wheels 44 at both ends of the connecting rod 41 vertically limit the moving direction of the spiral welded pipe on the roller conveyor 1 toward the grinder and the rotation direction of the grinder, thereby improving the accuracy of the flatness calibration of the pipe end of the spiral welded pipe.

[0051] Example 3

[0052] like Figure 3 As shown, the present invention proposes a spiral welded pipe end flatness calibration tool. Compared with the first embodiment, in this embodiment, the driving assembly 3 includes a toothed pulley 31, a toothed belt 32 and a second motor 33;

[0053] The second motor 33 is mounted on the connecting rod 41, and the second motor 33 is a servo motor used to control the rotation of the moving wheel 44 with high precision when in use;

[0054] There are at least two toothed pulleys 31 , which are mounted on the rotating rod 43 and the output shaft of the second motor 33 , respectively.

[0055] The toothed belt 32 is installed outside the two toothed pulleys 31 and is meshed with the toothed pulleys 31 . When in use, the toothed pulleys 31 and the toothed belt 32 can be replaced with a chain transmission structure composed of a sprocket and a chain.

[0056] In this embodiment, the second motor 33 drives the toothed pulley 31 to rotate, so that the toothed pulley 31 drives the toothed belt 32 to run and drive the toothed pulley 31 installed on the rotating rod 43 to rotate, so that it drives the rotating rod 43 to rotate on the connecting rod 41, and the moving wheel 44 drives the spiral welded pipe to move.

[0057] Example 4

[0058] like Figure 4 As shown, the present invention proposes a spiral welded pipe end flatness calibration tool. Compared with the first embodiment, in this embodiment, the clamping mechanism 6 includes a mounting shell 61, an adjustment component and a first motor 2;

[0059] The mounting shell 61 is disposed above the roller conveyor 1 and arranged parallel to the roller shaft of the roller conveyor 1, wherein the middle portion of the mounting shell 61 has a chute with an open bottom end;

[0060] The adjustment assembly is arranged on the inner side of the mounting shell 61, and one end thereof extends to the outer side of the mounting shell 61, wherein the support rod 64 is mounted on the bottom end of the adjustment assembly;

[0061] The first motor 2 is mounted on the outer side of the end portion of the mounting shell 61 and is in transmission connection with the adjustment assembly.

[0062] In this embodiment, the first motor 2 drives the adjustment component to operate inside the mounting shell 61, so that the adjustment component adjusts the position of the support rod 64, so that the support rod 64 moves closer to and away from the spiral welded pipe.

[0063] Example 5

[0064] like Figure 4 As shown, the present invention proposes a spiral welded pipe end flatness calibration tool. Compared with the fourth embodiment, in this embodiment, the adjustment component includes a rotating shaft 62 and a moving block 63;

[0065] The rotating shaft 62 is rotatably mounted on the inner side of the mounting shell 61 and one end of the rotating shaft extends to the outer side of the mounting shell 61 and is transmission-connected to the first motor 2;

[0066] There are two moving blocks 63 . The two moving blocks 63 are sleeved on the outer side of the rotating shaft 62 and are slidably connected to the inner wall of the mounting shell 61 . The bottom ends of the moving blocks 63 are connected to the support rod 64 .

[0067] It should be noted that both ends of the rotating shaft 62 have threads, and the threads at both ends of the rotating shaft 62 are arranged symmetrically according to the center of the mounting shell 61. When the rotating shaft 62 and the moving block 63 are in the assembled state, the moving block 63 is fitted into the threads at the end of the rotating shaft 62.

[0068] In this embodiment, the first motor 2 drives the rotating shaft 62 to rotate inside the mounting shell 61, so that the rotating shaft 62 drives the two moving blocks 63 to move toward each other inside the mounting shell 61 through the thread, so that the moving blocks 63 drive the support rod 64 to adjust the position.

[0069] Example 6

[0070] like Figure 1-2 As shown, the present invention proposes a spiral welded pipe end flatness calibration tool. Compared with the first embodiment, in this embodiment, the lifting assembly includes a hydraulic cylinder 5, a connecting cap 7 and a sleeve 8;

[0071] The connecting cap 7 is installed at the end of the mounting shell 61, and has a hole for the rotating shaft 62 in the middle to avoid obstruction between the connecting cap 7 and the rotating shaft 62;

[0072] The sleeve 8 is installed at the bottom end of the connecting cap 7, wherein the middle portion of the sleeve 8 has a central through hole;

[0073] The hydraulic cylinder 5 is inserted into the inner side of the sleeve 8 and is located on both sides of the roller conveyor 1 .

[0074] In this embodiment, the connecting cap 7 is wrapped around the end of the mounting shell 61, and the connecting cap 7 is fixed to the end of the clamping mechanism 6 by bolts or other fixing parts. The hydraulic cylinder 5 is fixed to both sides of the roller conveyor 1, and the extension rod of the hydraulic cylinder 5 is inserted into the inner side of the sleeve 8, so that the clamping mechanism 6 is installed above the hydraulic cylinder 5.

[0075] In summary, when the present invention is in use, the connecting cap 7 is wrapped around the end of the mounting shell 61, and the connecting cap 7 is fixedly mounted on the end of the clamping mechanism 6 by means of bolts and other fixing parts, and the hydraulic cylinder 5 is fixed on both sides of the roller conveyor 1, and the extension rod of the hydraulic cylinder 5 is inserted into the inner side of the sleeve 8, so that the clamping mechanism 6 is installed above the hydraulic cylinder 5, and the spiral welded pipe is placed on the roller conveyor 1 and transported to the grinder, so that the spiral welded pipe contacts the grinder, and the hydraulic cylinder 5 drives the mounting shell 6 through the connecting cap 7 and the sleeve 8. The position of the mounting shell 61 is adjusted up and down, so that the clamping part 4 moves to the horizontal middle of the spiral welded pipe, so that the middle of the clamping part 4 is aligned with the middle of the horizontal position of the spiral welded pipe. At the same time, the first motor 2 drives the rotating shaft 62 to rotate inside the mounting shell 61, so that the rotating shaft 62 drives the two moving blocks 63 to move toward each other inside the mounting shell 61 through the thread, so that the moving block 63 drives the support rod 64 to adjust the position, and the support rod 64 drives the connecting rod 41 to move, so that the connecting rod 41 drives the moving wheel 44 to contact the spiral welded pipe through the rotating rod 43 The rotating rod 43 and the two moving wheels 44 are arranged in an I-shape, so that the contact point between the moving wheel 44 and the spiral welded pipe is away from the horizontal center position of the spiral welded pipe. The rotating direction of the moving wheel 44 is perpendicular to the direction of the force generated between the spiral welded pipe and the grinder, so that the moving wheel 44 has a friction force on the spiral welded pipe, and the clamping force and friction force are used to block the rotational force generated between the spiral welded pipe and the grinder, so that the spiral welded pipe is fixed. The shape of the connecting rod 41 is U-shaped, so that the ends of the connecting rod 41 are The two moving wheels 44 adjust the position of the spiral welded pipe so that the length direction of the spiral welded pipe is perpendicular to the rotation direction of the grinder, thereby improving the accuracy of the flatness calibration of the pipe end of the spiral welded pipe. During processing, the second motor 33 drives the toothed pulley 31 to rotate, so that the toothed pulley 31 drives the toothed belt 32 to run and drive the toothed pulley 31 installed on the rotating rod 43 to rotate, so that it drives the rotating rod 43 to rotate on the connecting rod 41, so that the moving wheel 44 drives the spiral welded pipe to move along the length direction of the spiral welded pipe, so that the spiral welded pipe can be continuously processed.

[0076] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A spiral welded pipe end flatness calibration tool, characterized in that: It comprises a roller conveyor (1), a driving assembly (3), a clamping portion (4), a clamping mechanism (6) and a lifting assembly; A clamping mechanism (6) is provided above the roller conveyor (1), and support rods (64) extending toward the roller conveyor (1) are provided at both ends of the inner side of the clamping mechanism (6); There are two clamping parts (4), which are respectively mounted on the bottom ends of the support rod (64) and are symmetrically arranged; the driving assembly (3) is mounted at one end of the clamping part (4); There are two lifting assemblies, and the two lifting assemblies are respectively located on one side of the roller conveyor (1) and connected to the end of the clamping mechanism (6).

2. A spiral welded pipe end flatness calibration tool according to claim 1, characterized in that: The clamping portion (4) includes a connecting rod (41), a bearing (42), a rotating rod (43) and a moving wheel (44); The connecting rod (41) is mounted on the bottom end of the supporting rod (64); There are two rotating rods (43), and the two rotating rods (43) are rotatably mounted on one end of the connecting rod (41) through bearings (42). There are multiple moving wheels (44), and the multiple moving wheels (44) are respectively fixedly mounted on one end of the rotating rod (43).

3. A spiral welded pipe end flatness calibration tool according to claim 2, characterized in that: The rotation direction of the moving wheel (44) is parallel to the length direction of the roller conveyor (1), and the diameter of the moving wheel (44) is larger than the end size of the connecting rod (41).

4. A spiral welded pipe end flatness calibration tool according to claim 2, characterized in that: The drive assembly (3) includes a toothed pulley (31), a toothed belt (32) and a second motor (33); The second motor (33) is mounted on the connecting rod (41); There are at least two toothed belt wheels (31), and the two toothed belt wheels (31) are respectively mounted on the rotating rod (43) and the output shaft of the second motor (33); The toothed belt (32) is installed outside the two toothed belt wheels (31) and is meshedly connected with the toothed belt wheels (31).

5. The spiral welded pipe end flatness calibration tool according to claim 1, characterized in that: The clamping mechanism (6) includes a mounting shell (61), an adjustment assembly and a first motor (2); The mounting shell (61) is arranged above the roller conveyor (1) and is arranged parallel to the roller of the roller conveyor (1); The adjustment component is arranged on the inner side of the mounting shell (61), and one end of the adjustment component extends to the outer side of the mounting shell (61); The first motor (2) is mounted on the outside of the end of the mounting shell (61) and is in transmission connection with the adjustment assembly.

6. A spiral welded pipe end flatness calibration tool according to claim 5, characterized in that: The adjustment assembly includes a rotating shaft (62) and a moving block (63); The rotating shaft (62) is rotatably mounted on the inner side of the mounting shell (61) and one end of the rotating shaft extends to the outer side of the mounting shell (61) and is transmission-connected to the first motor (2); There are two moving blocks (63), which are sleeved on the outside of the rotating shaft (62) and slidably connected to the inner wall of the mounting shell (61), and the bottom ends of the moving blocks (63) are connected to the support rod (64).

7. A spiral welded pipe end flatness calibration tool according to claim 6, characterized in that: Both ends of the rotating shaft (62) have threads, and the threads at both ends of the rotating shaft (62) are arranged symmetrically according to the center of the mounting shell (61). When the rotating shaft (62) and the moving block (63) are in a matched mounting state, the moving block (63) is matched and sleeved on the threads at the end of the rotating shaft (62).

8. The spiral welded pipe end flatness calibration tool according to claim 1, characterized in that: The lifting assembly includes a hydraulic cylinder (5), a connecting cap (7) and a sleeve (8); The connecting cap (7) is mounted on the end of the mounting shell (61); The sleeve (8) is installed at the bottom end of the connecting cap (7); The hydraulic cylinder (5) is inserted into the inner side of the sleeve (8) and is located on both sides of the roller conveyor (1).

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