An automatic tracking cutting device for spiral welded pipe

Abstract

The utility model relates to a kind of spiral welded pipe automatic tracking cutting device, belong to welded pipe cutting technical field.Sliding trolley is slidably installed on workbench by guide rail, bottom support seat is installed on sliding trolley, support arm is installed on one side of sliding trolley, laser cutting device is installed on support arm, electric cabinet is installed on one side of workbench, delivery machine of spiral welded pipe machine unit equipment is electrically connected with electric cabinet, electric cabinet is electrically connected with laser cutting device and sliding trolley;Without other steel pipe movement detection device, avoid tracking cutting error caused by detection error, ensure tracking cutting precision;When cutting, the bottom of the cutting position is supported by bottom support seat, avoid the problem that steel pipe stiffness is not enough to lead to downward bending deformation under its gravity with the proceeding of cutting, effectively improve cutting precision, ensure the flatness of cutting section, reduce end waste allowance, save resources, effectively improve production efficiency, reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of welded pipe cutting technology, specifically relating to an automatic tracking and cutting device for spiral welded pipes. Background Technology

[0002] Spiral welded pipe is made by rolling low-carbon structural steel or low-alloy structural steel strips into a pipe blank at a certain spiral angle, and then welding the pipe seam together. Currently, the production of this type of spiral welded pipe is generally carried out in batches on a production line. After production, the spiral welded pipe is usually cut to length according to actual application requirements. In online production of spiral welded pipe, the tracking accuracy of existing tracking cutting devices is poor, making it impossible to accurately cut annular cross-sectional notches. This results in tilted or uneven notches, large amounts of waste material at the ends, leading to material waste, increased production costs, and reduced production efficiency. Utility Model Content

[0003] To overcome the problems of poor tracking accuracy in existing tracking and cutting devices, which fail to accurately cut annular cross-sectional notches, resulting in tilted or uneven notches, large end scrap, material waste, increased production costs, and reduced production efficiency, this invention provides an automatic tracking and cutting device for spiral welded pipes. This invention directly inputs the axial speed signal of the steel pipe from the delivery machine of the spiral welded pipe machine unit into the electrical control box 7, eliminating the need for other steel pipe movement detection devices and avoiding tracking and cutting errors caused by detection errors, thus ensuring tracking and cutting accuracy. During cutting, the bottom support 4 supports the bottom of the position to be cut, preventing the steel pipe from bending and deforming downwards under its own weight due to insufficient rigidity during cutting, and in severe cases, deformation or even tearing of the cut. This effectively improves cutting accuracy, ensures the flatness of the cut cross-section, reduces end scrap, saves resources, and effectively improves production efficiency and reduces production costs.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: An automatic tracking and cutting device for spiral welded pipes mainly includes a worktable 1, a guide rail 2, a sliding trolley 3, a bottom support seat 4, a support arm 5, a laser cutting device 6, and an electrical control box 7. The worktable 1 is installed between the spiral welded pipe machine and the steel pipe conveyor. Two guide rails 2 are installed parallel to each other on the worktable 1 along the steel pipe conveying direction. The sliding trolley 3 is slidably installed on the guide rail 2. The bottom support seat 4, which supports the bottom of the steel pipe to be cut, is installed on the sliding trolley 3. The support arm 5 is installed on one side of the sliding trolley 3. The laser cutting device 6, which cuts the steel pipe, is installed on the support arm 5. The electrical control box 7 is installed on one side of the worktable 1. The delivery machine of the spiral welded pipe machine unit is electrically connected to the electrical control box 7. The electrical control box 7 is electrically connected to the laser cutting device 6 and the sliding trolley 3.

[0005] Furthermore, the sliding trolley 3 includes track wheels 31, a frame 32, a rotating shaft 33, a motor 34, a gear 35, and a rack 36. The frame 32 is mounted on the guide rail 2 via the track wheels 31. The rotating shaft 33 is mounted on the bottom front side of the frame 32 via bearings. The motor 34 is mounted on the frame 32 and is connected to the rotating shaft 33 for transmission. The gear 35 is mounted on the rotating shaft 33. The rack 36 is mounted parallel to the guide rail 2 on the worktable 1 and is engaged with the rack 36 for transmission. The motor 34 is electrically connected to the electrical control box 7.

[0006] Furthermore, the bottom support 4 includes a first support 41, a second support 42, a lever arm 43, a support wheel 44, and a cylinder 45. The first support 41 and the second support 42 are both mounted on the sliding trolley 3. The middle part of the lever arm 43 is hinged to the top of the first support 41. The cylinder body of the cylinder 45 is hinged to the top of the second support 42. The telescopic rod of the cylinder 45 is hinged to the tail end of the lever arm 43. The support wheel 44 is mounted on the front end of the lever arm 43. The cylinder 45 is electrically connected to the electrical control box 7.

[0007] Furthermore, the support wheel 44 includes a wheel frame 46 and a roller 47. The wheel frame 46 is mounted on the front end of the lever arm 43 via a thrust bearing, and the roller 47 is mounted on the wheel frame 46 via a bearing.

[0008] Furthermore, the bottom support 4 is provided in two parts, which respectively support the two sides of the position where the steel pipe is to be cut.

[0009] Furthermore, the support arm 5 includes an upright 51, a sliding sleeve 52, a crossbar 53, an overlapping assembly 54, and a longitudinal rod 55. The upright 51 is installed vertically on the sliding trolley 3. The sliding sleeve 52 is slidably fitted onto the upright 51. The crossbar 53 is transversely inserted into the sliding sleeve 52. The overlapping assembly 54 is rotatably fitted onto the crossbar 53. The longitudinal rod 55 is telescopically inserted into the overlapping assembly 54. The laser cutting device 6 is installed at the top of the longitudinal rod 55.

[0010] Furthermore, the upright 51 is fixed to the sliding sleeve 52 by radial locking screws, the crossbar 53 is fixed to the overlapping assembly 54 by radial locking screws, and the overlapping assembly 54 is fixed to the longitudinal bar 55 by radial locking screws.

[0011] Furthermore, the electrical control box 7 is mounted on one side of the workbench 1 via the frame 71. The front of the electrical control box 7 is equipped with a display screen 72 and an adjustment knob 73. A PLC controller is installed inside the electrical control box 7. The PLC controller is electrically connected to the delivery machine of the spiral welded pipe machine unit. The PLC controller is electrically connected to the display screen 72 and the adjustment knob 73. The PLC controller is also electrically connected to the sliding trolley 3, the bottom support 4, and the laser cutting device 6.

[0012] Furthermore, the sliding trolley 3 is equipped with a blow pipe 8, and the blow pipe 8 is equipped with an air outlet 81. The air outlet 81 for blowing air to clean the rack 36 is located above the rack 36. The blow pipe 8 is connected to the air supply equipment in the workshop through a hose and a solenoid valve.

[0013] The beneficial effects of this utility model are:

[0014] This invention directly inputs the axial speed signal of the steel pipe from the delivery machine of the spiral welded pipe machine unit into the electrical control box, eliminating the need for other steel pipe movement detection devices. This avoids tracking and cutting errors caused by detection errors and ensures tracking and cutting accuracy. During cutting, the bottom support base supports the bottom of the position to be cut, preventing the steel pipe from bending and deforming downwards under its own weight due to insufficient rigidity as cutting progresses. In severe cases, this can lead to cut deformation or even tearing. This effectively improves cutting accuracy, ensures the flatness of the cut section, reduces end waste, saves resources, and effectively improves production efficiency and reduces production costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the main axonometric projection of this utility model.

[0016] Figure 2 This is a rear axonometric three-dimensional schematic diagram of the present invention.

[0017] Figure 3 This is a left-axis three-dimensional schematic diagram of the present invention.

[0018] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 5 This is a three-dimensional schematic diagram of the bottom support base of this utility model.

[0020] Figure 6 This is a three-dimensional schematic diagram of the working state of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0022] This utility model discloses an automatic tracking and cutting device for spiral welded pipes. The device mainly includes a worktable 1, guide rails 2, a sliding trolley 3, a bottom support 4, a support arm 5, a laser cutting device 6, and an electrical control box 7. The worktable 1 is installed between the spiral welded pipe machine and the steel pipe conveyor. Two guide rails 2 are installed parallel to each other along the steel pipe conveying direction on the worktable 1. The sliding trolley 3 is slidably installed on the guide rails 2. The bottom support 4, which supports the bottom of the steel pipe to be cut, is installed on the sliding trolley 3. The support arm 5 is installed on one side of the sliding trolley 3. The laser cutting device 6, which cuts the steel pipe, is installed on the support arm 5. The electrical control box 7 is installed on one side of the worktable 1. The delivery machine of the spiral welded pipe machine unit is electrically connected to the electrical control box 7. The electrical control box 7 is also connected to the laser cutting device. 6 is electrically connected to the sliding trolley 3; by directly inputting the axial speed signal of the steel pipe from the delivery machine of the spiral welded pipe machine unit to the electrical control box 7, the electrical control box 7 controls the sliding trolley 3 to maintain a consistent speed for tracking movement according to the axial speed of the steel pipe, eliminating the need for other steel pipe movement detection devices, avoiding tracking and cutting errors caused by detection errors, and ensuring tracking and cutting accuracy; as the spiral welded pipe rotates, the laser cutting device 6 cuts it; during cutting, the bottom support seat 4 supports the bottom of the position to be cut, avoiding the problem of the steel pipe bending and deforming downward under its own weight due to insufficient rigidity, and in severe cases, deformation or even tearing of the cut, effectively improving cutting accuracy, ensuring the flatness of the cut section, reducing the end waste, saving resources, effectively improving production efficiency and reducing production costs.

[0023] The sliding trolley 3 includes track wheels 31, a frame 32, a rotating shaft 33, a motor 34, a gear 35, and a rack 36. The frame 32 is mounted on the guide rail 2 via the track wheels 31. The rotating shaft 33 is mounted on the bottom front side of the frame 32 via bearings. The motor 34 is mounted on the frame 32 and is connected to the rotating shaft 33 for transmission. The gear 35 is mounted on the rotating shaft 33. The rack 36 is mounted parallel to the guide rail 2 on the worktable 1, and the gear 35 and rack 36 mesh and transmit power. The motor 34 is electrically connected to the electrical control box 7. The motor 34 drives the rotating shaft 33 to rotate, and the sliding trolley 3 moves through the meshing gear 35 and rack 36. The movement accuracy is high, which helps to improve the flatness of the cutting end.

[0024] The bottom support 4 includes a first support 41, a second support 42, a lever arm 43, a support wheel 44, and a cylinder 45. The first support 41 and the second support 42 are both mounted on the sliding trolley 3. The middle part of the lever arm 43 is hinged to the top of the first support 41. The cylinder body of the cylinder 45 is hinged to the top of the second support 42. The telescopic rod of the cylinder 45 is hinged to the tail end of the lever arm 43. The support wheel 44 is mounted on the front end of the lever arm 43. The cylinder 45 is electrically connected to the electrical control box 7. The cylinder 45 drives the lever arm 43 to swing. The support wheel 44 supports the bottom of the steel pipe 9 at the position to be cut, avoiding the problem of the steel pipe 9 deforming and bending downward under the action of gravity in the later stage of cutting. This helps to ensure the cutting accuracy and the flatness of the end cut.

[0025] The support wheel 44 includes a wheel frame 46 and a roller 47. The wheel frame 46 is mounted on the front end of the lever arm 43 via a thrust bearing, and the roller 47 is mounted on the wheel frame 46 via a bearing. The wheel frame 46 can rotate freely without adjusting the angle of the support wheel 44 to meet the support requirements of pipes with different pitches and spiral welded pipes, thereby avoiding slippage between the roller 47 and the steel pipe 9 and reducing friction.

[0026] The bottom support base 4 is provided in two parts, which support both sides of the steel pipe to be cut, thereby improving support stability and ensuring cutting accuracy.

[0027] The support arm 5 includes an upright 51, a sliding sleeve 52, a crossbar 53, an overlapping assembly 54, and a longitudinal rod 55. The upright 51 is installed vertically on the sliding trolley 3. The sliding sleeve 52 is slidably fitted onto the upright 51. The crossbar 53 is transversely inserted into the sliding sleeve 52. The overlapping assembly 54 is rotatably fitted onto the crossbar 53. The longitudinal rod 55 is telescopically inserted into the overlapping assembly 54. The laser cutting device 6 is installed at the top of the longitudinal rod 55. The support height and position of the support arm 5 are adjustable to match the cutting of steel pipes 9 of different diameters, increasing the range of equipment applications.

[0028] The upright 51 and the sliding sleeve 52 are fixed by radial locking screws, the crossbar 53 and the overlapping kit 54 are fixed by radial locking screws, and the overlapping kit 54 and the longitudinal rod 55 are fixed by radial locking screws. The position of the laser cutting device 6 can be freely adjusted to match the cutting of steel pipes 9 of different diameters. The adjustment structure is simple and the operation is convenient.

[0029] The electrical control box 7 is mounted on one side of the workbench 1 via the frame 71. The front of the electrical control box 7 is equipped with a display screen 72 and an adjustment knob 73. A PLC controller is installed inside the electrical control box 7. The PLC controller is electrically connected to the delivery machine of the spiral welded pipe machine unit. The PLC controller is electrically connected to the display screen 72 and the adjustment knob 73. The PLC controller is also electrically connected to the sliding trolley 3, the bottom support 4, and the laser cutting device 6.

[0030] The sliding trolley 3 is equipped with a blowpipe 8, which has an air inlet 81. The air inlet 81, which is used to clean the rack 36 by blowing air, is located above the rack 36. The blowpipe 8 is connected to the air supply equipment in the workshop through a hose and a solenoid valve. During the movement of the sliding trolley 3, high-pressure air is blown through the blowpipe 8 to clean iron filings, dust and other debris on the rack 36, so as to ensure the stability of the sliding trolley 3, ensure the movement accuracy, and further improve the steel pipe cutting accuracy.

[0031] Work process:

[0032] The position of the laser cutting device 6 can be freely adjusted via the support arm 5 to match the cutting of steel pipes 9 of different diameters. The adjustment structure is simple and the operation is convenient. By directly inputting the axial speed signal of the steel pipe from the delivery machine of the spiral welded pipe machine unit to the electrical control box 7, the electrical control box 7 controls the sliding carriage 3 to maintain a consistent speed for tracking movement based on the axial speed of the steel pipe. No other steel pipe movement detection device is needed, avoiding tracking and cutting errors caused by detection errors and ensuring tracking and cutting accuracy. As the spiral welded pipe rotates, the laser cutting device 6 cuts it. The motor 34 drives the rotating shaft 33 to rotate, and the sliding carriage 3 moves through the meshing gears 35 and rack 36. The movement accuracy is high, which helps to improve the flatness of the cut end. During the movement of the sliding carriage 3, high-pressure air is blown through the blow pipe 8 to... Iron filings, dust, and other debris on the rack 36 are cleaned to ensure the smooth movement of the sliding trolley 3, guaranteeing movement accuracy and further improving the cutting precision of the steel pipe. During cutting, the cylinder 45 drives the lever arm 43 to swing, and the support wheel 44 supports the bottom of the steel pipe 9 at the cutting position, preventing the steel pipe 9 from deforming and bending downwards under gravity in the later stages of cutting. This helps to ensure cutting precision and the flatness of the end cut. The bottom support seat 4 supports the bottom of the cutting position, preventing the steel pipe from bending and deforming downwards under gravity due to insufficient rigidity as cutting progresses. In severe cases, this can lead to cut deformation or even tearing. This effectively improves cutting precision, ensures the flatness of the cutting section, reduces end waste, saves resources, and effectively improves production efficiency and reduces production costs.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An automatic tracking cutting device for spiral welded pipe, characterized by: The spiral welded pipe automatic tracking and cutting device includes a worktable (1), a guide rail (2), a sliding trolley (3), a bottom support seat (4), a support arm (5), a laser cutting device (6), and an electrical control box (7). The worktable (1) is installed between the spiral welded pipe machine and the steel pipe conveyor. Two guide rails (2) are installed parallel to each other on the worktable (1) along the steel pipe conveying direction. The sliding trolley (3) is slidably installed on the guide rail (2). The bottom support seat (4) that supports the bottom of the steel pipe to be cut is installed on the sliding trolley (3). The support arm (5) is installed on one side of the sliding trolley (3). The laser cutting device (6) that cuts the steel pipe is installed on the support arm (5). The electrical control box (7) is installed on one side of the worktable (1). The delivery machine of the spiral welded pipe machine unit is electrically connected to the electrical control box (7). The electrical control box (7) is electrically connected to the laser cutting device (6) and the sliding trolley (3).

2. The automatic tracking and cutting device for spiral welded pipes as described in claim 1, characterized in that: The sliding trolley (3) includes a track wheel (31), a frame (32), a rotating shaft (33), a motor (34), a gear (35), and a rack (36). The frame (32) is mounted on the guide rail (2) via the track wheel (31). The rotating shaft (33) is mounted on the bottom front side of the frame (32) via a bearing. The motor (34) is mounted on the frame (32). The rotating shaft (33) is connected to the motor (34) for transmission. The gear (35) is mounted on the rotating shaft (33). The rack (36) is mounted parallel to the guide rail (2) on the worktable (1). The gear (35) and the rack (36) mesh and transmit power. The motor (34) is electrically connected to the electrical control box (7).

3. The automatic tracking and cutting device for spiral welded pipes as described in claim 1 or 2, characterized in that: The bottom support (4) includes a first support (41), a second support (42), a lever arm (43), a support wheel (44), and a cylinder (45). The first support (41) and the second support (42) are both mounted on the sliding trolley (3). The middle part of the lever arm (43) is hinged to the top of the first support (41). The cylinder body of the cylinder (45) is hinged to the top of the second support (42). The telescopic rod of the cylinder (45) is hinged to the tail end of the lever arm (43). The support wheel (44) is mounted on the front end of the lever arm (43). The cylinder (45) is electrically connected to the electrical control box (7).

4. The automatic tracking and cutting device for spiral welded pipes as described in claim 3, characterized in that: The support wheel (44) includes a wheel frame (46) and a roller (47). The wheel frame (46) is mounted on the front end of the lever arm (43) via a thrust bearing, and the roller (47) is mounted on the wheel frame (46) via a bearing.

5. The automatic tracking and cutting device for spiral welded pipes as described in claim 4, characterized in that: The bottom support base (4) is provided in two parts, which respectively support the two sides of the position where the steel pipe is to be cut.

6. An automatic tracking and cutting device for spiral welded pipes as described in any one of claims 1, 2, 4, and 5, characterized in that: The support arm (5) includes a vertical pole (51), a sliding sleeve (52), a horizontal bar (53), an overlapping kit (54), and a longitudinal bar (55). The vertical pole (51) is installed upright on the sliding trolley (3). The sliding sleeve (52) is slidably fitted on the vertical pole (51). The horizontal bar (53) is transversely inserted on the sliding sleeve (52). The overlapping kit (54) is rotatably fitted on the horizontal bar (53). The longitudinal bar (55) is telescopically inserted on the overlapping kit (54). The laser cutting device (6) is installed at the top of the longitudinal bar (55).

7. The automatic tracking and cutting device for spiral welded pipes as described in claim 6, characterized in that: The upright (51) and the sliding sleeve (52) are fixed by radial locking screws, the crossbar (53) and the overlapping assembly (54) are fixed by radial locking screws, and the overlapping assembly (54) and the longitudinal bar (55) are fixed by radial locking screws.

8. An automatic tracking and cutting device for spiral welded pipes as described in any one of claims 1, 2, 4, 5, and 7, characterized in that: The electrical control box (7) is installed on one side of the workbench (1) via the frame (71). The front of the electrical control box (7) is equipped with a display screen (72) and an adjustment knob (73). A PLC controller is installed inside the electrical control box (7). The PLC controller is electrically connected to the delivery machine of the spiral welded pipe machine unit. The PLC controller is electrically connected to the display screen (72) and the adjustment knob (73). The PLC controller is electrically connected to the sliding trolley (3), the bottom support seat (4), and the laser cutting device (6).

9. The automatic tracking and cutting device for spiral welded pipes as described in claim 2, characterized in that: The sliding trolley (3) is equipped with a blow pipe (8), and the blow pipe (8) is equipped with an air inlet (81). The air inlet (81) for blowing and cleaning the rack (36) is located above the rack (36). The blow pipe (8) is connected to the air supply equipment in the workshop through a hose and a solenoid valve.

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