Positioning device and method for welding of welded pipe

Abstract

The invention provides a positioning device and method for welded pipe welding, and belongs to the technical field of welded pipe machining, the positioning device comprises a platform, a bearing frame, a positioning wall and a telescopic clamping mechanism, a stand column is arranged on one side of the platform, one end of the bearing frame is hinged to the stand column, the other end of the bearing frame is connected to the platform through a first telescopic device, and the bearing frame is used for bearing a welded pipe; the positioning wall is longitudinally arranged on the platform and located at the end, close to the first expansion piece, in the bearing frame, the telescopic clamping mechanism is arranged on the bearing frame and located at the end away from the positioning wall, and the action end of the telescopic clamping mechanism moves towards one side of the positioning wall and is used for abutting against the welded pipe to the positioning wall. According to the positioning device for welding of the welded pipe, the problems that a traditional mechanical positioning device is poor in adaptive capacity and long in positioning time are effectively solved, the debugging time during specification switching is remarkably shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of welded pipe processing technology, and more specifically, relates to a positioning device and method for welding welded pipes. Background Technology

[0002] Welded pipe, as a commonly used pipe material, has wide applications in modern industrial production and daily life. Welding, as a key step in welded pipe production, directly affects the performance and service life of the welded pipe. Accurate welding positioning is the foundation and prerequisite for ensuring welding quality. In traditional welded pipe production, the commonly used welding positioning method is to use simple mechanical positioning devices, such as a combination of fixed clamps and guide rails. While this type of mechanical positioning device improves positioning efficiency to some extent, its flexibility is poor. Welded pipes of different specifications and shapes have different parameters such as diameter, length, and curvature, and existing simple mechanical positioning devices cannot be quickly adjusted and adapted to these changes. When it is necessary to switch to producing welded pipes of different specifications, adjusting and reinstalling the mechanical positioning device also requires a lot of time and effort, reducing production efficiency. Summary of the Invention The purpose of this invention is to provide a positioning device and method for welding pipes, which aims to solve the problems of long positioning time and poor adaptability of existing positioning devices.

[0003] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a positioning device for welding pipes, comprising: The platform has a column on one side; A support frame, one end of which is hinged to the column, and the other end of which is connected to the platform via a first expansion joint, the support frame being used to support the welded pipe; A positioning wall is longitudinally positioned on the platform and located inside the support frame near one end of the first expansion joint; A telescopic clamping mechanism is provided on the bearing frame, located at the end away from the positioning wall. The actuating end of the telescopic clamping mechanism moves toward the positioning wall to press the welded pipe against the positioning wall.

[0004] In one possible implementation, the column includes a first support column and a second support column arranged front to back, the load-bearing frame includes a load-bearing beam, the load-bearing beam includes a first crossbeam and a second crossbeam arranged front to back, the first crossbeam is hinged to the first support column, the second crossbeam is hinged to the second support column, a connecting beam is provided between the ends of the first crossbeam and the second crossbeam away from the column, the first telescopic device is connected between the connecting beam and the platform, the first crossbeam and the second crossbeam are used to support the welded pipe, and both the first crossbeam and the second crossbeam are provided with the telescopic clamping mechanism.

[0005] In one possible implementation, the first crossbeam and the second crossbeam each have a first groove along their length on their opposite sidewalls, and a slider is slidably disposed in each of the two first grooves, with both ends of the connecting beam rotatably connected to the slider.

[0006] In one possible implementation, the connecting beam is an arched beam that bends downward in the middle, and the first expansion joint is connected to the middle of the connecting beam.

[0007] In one possible implementation, the telescopic clamping mechanism includes: The second expansion joint is fixed to the load-bearing beam; A clamping block is slidably disposed on the bearing beam. The actuating end of the second expansion joint is connected to the clamping block and is used to drive the clamping block to slide along the length direction of the bearing beam to press against or move away from the welded pipe.

[0008] In one possible implementation, the positioning wall has a first storage groove along the front-back direction on the side facing the telescopic clamping mechanism. Multiple positioning rollers are arranged in the first storage groove along the front-back direction. The multiple positioning rollers are located in the same plane and are arranged longitudinally. The roller surface of the positioning roller is used to contact the welded pipe.

[0009] In one possible implementation, a first motor is provided at the top of the positioning wall, and the drive shaft of the first motor is connected to a plurality of positioning rollers via a transmission belt. The first motor is used to drive the plurality of positioning rollers to rotate in the same direction to transport the welded pipe.

[0010] In one possible implementation, the clamping block has a second storage groove on the side facing the positioning wall, and a pressure roller is rotatably arranged in the second storage groove. The pressure roller is arranged longitudinally and is used to contact the welded pipe.

[0011] In one possible implementation, the circumferential sidewalls of the pressure roller are recessed from both ends toward the center in the axial direction.

[0012] The beneficial effects of the positioning device for welded pipes provided by this invention are as follows: Compared with the prior art, the positioning device for welded pipes of this invention, through the design of a bearing frame hinged to a column and adjusted by a first telescopic device, a positioning wall providing a fixed reference, and a telescopic clamping mechanism providing dynamic pressure, effectively solves the problems of poor adaptability and time-consuming positioning of traditional positioning devices. It can quickly adapt to welded pipes of different diameters, lengths, and curvatures. No cumbersome debugging is required when changing specifications. The positioning time and labor costs are greatly shortened through automated adjustment. At the same time, the positioning accuracy and stability of the welded pipe during the welding process are improved by the synergistic effect of rigid reference and flexible clamping, which significantly improves production efficiency and welding quality. It is suitable for the efficient and flexible production of welded pipes of multiple specifications.

[0013] The present invention also provides a positioning method for welded pipe welding, which uses the above-mentioned positioning device for welded pipe welding, including the following steps: hoisting the welded pipe onto the support frame; adjusting the first telescopic device to make the support frame tilt downward toward the positioning wall, so that the welded pipe rests against the positioning wall by gravity; then adjusting the first telescopic device to make the support frame swing up and down to adjust the welded pipe to a predetermined position; activating the telescopic clamping mechanism to press the welded pipe against the positioning wall to complete the positioning of the welded pipe.

[0014] The beneficial effects of the positioning method for welded pipes provided by the present invention are as follows: Compared with the prior art, the positioning method for welded pipes of the present invention uses the above-mentioned positioning device for welded pipes, which has all the beneficial effects of the above-mentioned positioning device for welded pipes. It effectively solves the problems of poor adaptability and long positioning time of traditional mechanical positioning devices. It can quickly adapt to welded pipes of different diameters, lengths and curvatures through power drive without changing mechanical fixtures, significantly shortening the debugging time when switching specifications and improving work efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments 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.

[0016] Figure 1 This is a top view of a positioning device for welding pipes provided in an embodiment of the present invention; Figure 2 This is a front view structural schematic diagram of a positioning device for welding pipes provided in an embodiment of the present invention; Figure 3 This is a left-side structural schematic diagram of a positioning device for welding pipes provided in an embodiment of the present invention; Figure 4 For along Figure 1 Cross-sectional view of line AA in the middle; Figure 5 This is a cross-sectional schematic diagram showing the usage state of a positioning device for welding pipes provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Platform; 11. First support column; 12. Second support column; 13. First telescopic device; 21. First crossbeam; 22. Second crossbeam; 23. Connecting beam; 201. First slide groove; 202. Slider; 3. Positioning wall; 301. First storage slot; 31. Positioning roller; 32. First motor; 321. Transmission belt; 4. Telescopic clamping mechanism; 41. Second telescopic device; 42. Clamping block; 421. Second storage slot; 43. Pressure roller; 5. Welded pipe. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Please see Figures 1 to 5The present invention provides a positioning device for welding pipes. The positioning device includes a platform 1, a support frame, a positioning wall 3, and a telescopic clamping mechanism 4. A column is provided on one side of the platform 1. One end of the support frame is hinged to the column, and the other end of the support frame is connected to the platform 1 via a first telescopic joint 13. The support frame supports the welded pipe 5. The positioning wall 3 is longitudinally arranged on the platform 1 and located inside the support frame near the first telescopic joint 13. The telescopic clamping mechanism 4 is located on the support frame at the end away from the positioning wall 3. The actuating end of the telescopic clamping mechanism 4 moves towards the positioning wall 3 to press the welded pipe 5 against the positioning wall 3.

[0023] The present invention provides a positioning device for welding pipes. Compared with the prior art, it effectively solves the problems of poor adaptability and time-consuming positioning of traditional positioning devices by using a bearing frame hinged to a column and adjusted by a first telescopic device 13, a positioning wall 3 providing a fixed reference, and a telescopic clamping mechanism 4 for dynamic pressure. It can quickly adapt to welded pipes 5 with different diameters, lengths, and curvatures. No cumbersome debugging is required when changing specifications. The positioning time is greatly shortened and labor costs are reduced through automated adjustment. At the same time, the positioning accuracy and stability of the welded pipe 5 are improved by the synergistic effect of rigid reference and flexible clamping, which significantly improves production efficiency and welding quality. It is suitable for the efficient and flexible production of welded pipes 5 with multiple specifications.

[0024] In some embodiments, please refer to Figures 1 to 5 The aforementioned columns include a first support column 11 and a second support column 12 arranged front and rear. The aforementioned load-bearing frame includes a load-bearing beam, which includes a first crossbeam 21 and a second crossbeam 22 arranged front and rear. One end of the first crossbeam 21 is hinged to the first support column 11, and one end of the second crossbeam 22 is hinged to the second support column 12. A connecting beam 23 is provided between the ends of the first crossbeam 21 and the second crossbeam 22 away from the columns. The aforementioned first telescopic device 13 is connected between the connecting beam 23 and the platform 1. In application, the first telescopic device 13 can be a screw jack. During operation, the welded pipe 5 can be hoisted onto the first crossbeam 21 and the second crossbeam 22 by a lifting device, so that the first crossbeam 21 and the second crossbeam 22 support the welded pipe 5. In this embodiment, the aforementioned telescopic clamping mechanism 4 is provided on both the first crossbeam 21 and the second crossbeam 22.

[0025] In this embodiment, a first groove 201 is provided along the length of each of the opposite side walls of the first crossbeam 21 and the second crossbeam 22. In practical applications, the first groove 201 can be a T-shaped groove. A slider 202 is slidably arranged in each of the two first grooves 201. The slider 202 is a T-shaped slider 202 adapted to the first groove 201. This fit can prevent the slider 202 from coming out of the first groove 201. The two ends of the connecting beam 23 are respectively rotatably connected to the slider 202 through a rotating shaft. In application, the first telescopic device 13 extends and retracts to drive the connecting beam 23 to move up and down. The connecting beam 23 can drive the first crossbeam 21 and the second crossbeam 22 to swing longitudinally with the help of the slider 202 and the first groove 201, so that the welded pipe 5 supported on the first crossbeam 21 and the second crossbeam 22 can be adjusted up and down to a predetermined position.

[0026] In this embodiment, in order to improve the structural strength of the connecting beam 23 and enhance its resistance to deformation, the connecting beam 23 is configured as an arched beam that bends downward in the middle, and the actuating end of the first expansion joint 13 is connected to the arching position in the middle of the connecting beam 23. Through the above configuration, the resistance to deformation of the connecting beam 23 is greatly improved.

[0027] In some embodiments, please refer to Figures 1 to 5 The aforementioned telescopic clamping mechanism 4 includes a second telescopic member 41 and a clamping block 42. The second telescopic member 41 is fixed to the bearing beam. In application, the second telescopic member 41 can be a linear telescopic mechanism such as a cylinder, hydraulic cylinder, or electric telescopic rod. The clamping block 42 is slidably disposed on the bearing beam (the bearing beam includes a first crossbeam 21 and a second crossbeam 22). Specifically, a second sliding groove is provided on the bearing beam along its length direction. The second sliding groove is also a T-shaped structure groove. The lower end of the clamping block 42 is provided with a T-shaped structure block that matches the second sliding groove. In application, the actuating end of the second telescopic member 41 is connected to the clamping block 42. The extension and retraction of the actuating end of the second telescopic member 41 can drive the clamping block 42 to slide along the length direction of the bearing beam, thereby allowing the clamping block 42 to press against or move away from the welded pipe 5.

[0028] In some embodiments, please refer to Figures 1 to 5 On the aforementioned positioning wall 3, a first placement groove 301 is provided along the front-back direction (the front-back direction is the extension direction of the positioning wall 3, which is the same as the axial direction of the welded pipe 5) on the side facing the telescopic clamping mechanism 4. Multiple positioning rollers 31 are provided in the first placement groove 301 along the front-back direction. The multiple positioning rollers 31 are located in the same plane and are arranged longitudinally. The roller surface of the positioning rollers 31 is used to contact the welded pipe 5. A first motor 32 is provided at the top of the positioning wall 3. The drive shaft of the first motor 32 is connected to the multiple positioning rollers 31 through a transmission belt 321. The first motor 32 is used to drive the multiple positioning rollers 31 to rotate in the same direction, thereby enabling the welded pipe 5 to be transferred to a predetermined position.

[0029] In this embodiment, to reduce the frictional resistance during the transmission of the welded pipe 5, a second placement groove 421 is provided on the side of the clamping block 42 facing the positioning wall 3. A pressure roller 43 is rotatably arranged in the second placement groove 421. The pressure roller 43 is arranged longitudinally and is used to contact the welded pipe 5. The pressure roller 43 transforms the sliding friction between the clamping block 42 and the welded pipe 5 into rotational friction, greatly reducing the frictional resistance during the transmission of the welded pipe 5. In application, to maintain the pressing effect of the pressure roller 43 on the welded pipe 5, the circumferential sidewall of the pressure roller 43 is recessed from both ends of the axial direction towards the middle, so that the roller surface of the pressure roller 43 is formed as a curved surface, which can greatly increase the contact area between the pressure roller 43 and the welded pipe 5, thereby improving the pressing effect of the pressure roller 43 on the welded pipe 5.

[0030] This invention also provides a positioning method for welded pipe welding, using the aforementioned positioning device for welded pipe welding, mainly including the following steps: First, the welded pipe 5 is hoisted onto the support frame; then, the first telescopic device 13 is adjusted to retract downwards, driving the connecting beam 23 to tilt the support frame downwards towards the positioning wall 3, causing the welded pipe 5 to roll towards the positioning wall 3 under gravity and abut against the positioning wall 3. The positioning wall 3 serves as a fixed reference, and the welded pipe 5 abuts against the positioning wall 3, thus achieving lateral positioning of the welded pipe 5; at this time, by adjusting the first telescopic device 13, the support frame is made to swing up and down slightly, which drives the welded pipe 5 to move up and down, thereby adjusting the welded pipe 5 to the predetermined position and completing the positioning adjustment of the welded pipe 5's vertical position; then, the telescopic clamping mechanism 4 is activated to press the welded pipe 5 against the positioning wall 3, completing the clamping and positioning of the welded pipe 5.

[0031] This invention provides a positioning device for welded pipes. Compared with existing technologies, this device adjusts the tilt and swing of the support frame via a first telescopic device 13, allowing the welded pipe 5 to automatically adhere to the positioning wall 3 and adjust to a predetermined position under gravity. Positioning is then completed via a telescopic clamping mechanism 4. This effectively solves the problems of poor adaptability and long positioning time associated with traditional mechanical positioning devices. Its advantages include the ability to quickly adapt to welded pipes 5 of different diameters, lengths, and curvatures via power drive without changing mechanical fixtures, significantly shortening the debugging time during specification changes and improving production line flexibility. The combination of gravity-assisted adhesion and precise adjustment ensures positioning accuracy and reduces welding defects. Simultaneously, mechanized operation reduces the intensity of manual operation and the technical threshold, achieving efficient, accurate, and low-consumption positioning of the welded pipe 5. This is of great significance for the flexible upgrading of multi-variety, small-batch welded pipe production.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning device for welding pipes, characterized in that, include: Platform (1), with a column on one side; The support frame has one end hinged to the column and the other end connected to the platform (1) via a first expansion joint (13). The support frame is used to support the welded pipe (5). The positioning wall (3) is longitudinally arranged on the platform (1) and located inside the bearing frame at one end near the first telescopic member (13); The telescopic clamping mechanism (4) is located on the bearing frame at one end away from the positioning wall (3). The actuating end of the telescopic clamping mechanism (4) moves toward the positioning wall (3) to press the welded pipe (5) against the positioning wall (3).

2. The positioning device for welding pipes as described in claim 1, characterized in that, The column includes a first support column (11) and a second support column (12) arranged in front and behind. The bearing frame includes a bearing beam. The bearing beam includes a first crossbeam (21) and a second crossbeam (22) arranged in front and behind. The first crossbeam (21) is hinged to the first support column (11). The second crossbeam (22) is hinged to the second support column (12). A connecting beam (23) is provided between the ends of the first crossbeam (21) and the second crossbeam (22) away from the column. The first telescopic device (13) is connected between the connecting beam (23) and the platform (1). The first crossbeam (21) and the second crossbeam (22) are used to support the welded pipe (5). The first crossbeam (21) and the second crossbeam (22) are both provided with the telescopic clamping mechanism (4).

3. The positioning device for welding pipes as described in claim 2, characterized in that, The first crossbeam (21) and the second crossbeam (22) are provided with first grooves (201) along their length on their opposite sidewalls. Sliders (202) are slidably arranged in both first grooves (201). The two ends of the connecting beam (23) are respectively rotatably connected to the sliders (202).

4. The positioning device for welding pipes as described in claim 3, characterized in that, The connecting beam (23) is an arched beam that bends downward in the middle, and the first expansion joint (13) is connected to the middle of the connecting beam (23).

5. A positioning device for welding pipes as described in claim 2, characterized in that, The telescopic clamping mechanism (4) includes: The second expansion joint (41) is fixed to the load-bearing beam; The clamping block (42) is slidably disposed on the bearing beam. The actuating end of the second telescopic device (41) is connected to the clamping block (42) and is used to drive the clamping block (42) to slide along the length direction of the bearing beam to press against or move away from the welded pipe (5).

6. A positioning device for welding pipes as described in claim 5, characterized in that, The positioning wall (3) is provided with a first storage groove (301) on the side facing the telescopic clamping mechanism (4) along the front-back direction. Multiple positioning rollers (31) are provided in the first storage groove (301) along the front-back direction. The multiple positioning rollers (31) are located in the same plane and are arranged longitudinally. The roller surface of the positioning rollers (31) is used to contact the welded pipe (5).

7. A positioning device for welding pipes as described in claim 6, characterized in that, The top of the positioning wall (3) is provided with a first motor (32). The drive shaft of the first motor (32) is connected to multiple positioning rollers (31) via a transmission belt (321). The first motor (32) is used to drive multiple positioning rollers (31) to rotate in the same direction to transmit the welded pipe (5).

8. A positioning device for welding pipes as described in claim 7, characterized in that, The clamping block (42) is provided with a second storage groove (421) on the side facing the positioning wall (3). A pressure roller (43) is rotatably provided in the second storage groove (421). The pressure roller (43) is arranged longitudinally and is used to contact the welded pipe (5).

9. A positioning device for welding pipes as described in claim 8, characterized in that, The circumferential sidewall of the pressure roller (43) is recessed from both ends of the axial direction toward the middle.

10. A positioning method for welding pipes, using a positioning device for welding pipes as described in any one of claims 1-9, characterized in that, The procedure includes the following steps: hoisting the welded pipe (5) onto the support frame; adjusting the first telescopic device (13) so that the support frame tilts downward toward the positioning wall (3) so that the welded pipe (5) rests against the positioning wall (3) by gravity; then adjusting the first telescopic device (13) again so that the support frame swings up and down to adjust the welded pipe (5) to the predetermined position; and activating the telescopic clamping mechanism (4) to press the welded pipe (5) against the positioning wall (3) to complete the positioning of the welded pipe (5).

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