A pipeline welding processing device

Abstract

The present invention discloses a pipeline welding processing device, which relates to the technical field of pipeline welding. The present invention includes an insulating base plate, a protective cover, a clamping part, a calibration rod and a calibration needle; the clamping part realizes stable clamping of pipelines with different diameters through a servo motor, a swing adjustment electric cylinder and clamping rollers, and accurately adjusts the pipeline axis height and the parallelism of the weld end face; the calibration needle cooperates with a high-voltage generator to judge the pipeline axis deviation through the arc distribution and assist in calibration. The device is easy to operate, can effectively improve the alignment accuracy and efficiency of pipeline welding, is applicable to various pipeline diameters, significantly reduces the difficulty of manual adjustment, ensures the welding quality, and is particularly suitable for high-precision pipeline welding scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and specifically to a pipeline welding processing device. Background Art

[0002] In traditional pipeline welding processing, manual clamping or simple mechanical clamping devices are usually used to fix the pipeline to be welded. The operator manually adjusts the position of the pipeline to align the weld end faces of the two sections of the pipeline, and then uses a welding torch for welding. In the prior art, the clamping device is usually a fixed clamping structure, which can only adapt to pipelines with a specific diameter and lacks universality for pipelines with different diameters. In addition, the adjustment of the pipeline axis height and the parallelism of the weld end faces mainly relies on the experience of the operator, and is calibrated by visual inspection or simple tools, resulting in low accuracy, easy weld deviation, and affecting the welding quality. The existing devices generally do not have a precise calibration system, and it is difficult to directly detect the deviation of the pipeline axis. Repeated adjustments are required, which is time-consuming and laborious. Especially in high-precision welding scenarios, the traditional devices cannot meet the strict requirements for the parallelism of the weld end faces and the coincidence of the axes, resulting in a high welding defect rate and low processing efficiency. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A pipeline welding processing device includes an electric welding machine and a welding torch, and also includes an insulating base plate. Two protective covers are fixedly installed on the insulating base plate, and inclined through grooves are opened on both of the two protective covers; clamping parts are arranged inside both of the two protective covers. The clamping parts can clamp pipelines with different diameters, and the parallelism of the weld end faces of the two sections of the pipelines to be welded can be adjusted by the two clamping parts; a calibration rod support is also fixedly installed on the insulating base plate. The top end of the calibration rod support is movably installed with a calibration rod. The top end of the calibration rod support is also fixedly provided with a convex block in contact and cooperation with the calibration rod. The convex block is used to limit the swinging angle of the calibration rod on the calibration rod support to make the calibration rod parallel to the surface of the insulating base plate. A calibration adjustment electric cylinder is fixedly installed on the calibration rod. The end of the telescopic rod of the calibration adjustment electric cylinder is fixedly installed with a calibration needle, and a handle is fixedly installed on the calibration rod.

[0004] Preferably, the clamping part includes a flange seat fixedly fitted with the insulating base plate. Three swing adjustment electric cylinders arranged in an annular equidistant array are fixedly installed on the flange seat. The end of the telescopic rod of each swing adjustment electric cylinder is arranged in a spherical shape; a ball head is movably installed at the center position of the upper surface of the flange seat. A support disc is fixedly installed on the ball head, and the lower surface of the support disc is in contact and cooperation with the ends of the telescopic rods of the three swing adjustment electric cylinders.

[0005] Preferably, a clamping flat plate is fixedly installed on the support plate. One end of the clamping flat plate is fixedly installed with a top clamping plate bracket, and the top clamping plate bracket is perpendicular to the clamping flat plate. Two symmetrically and obliquely arranged inclined support plates are fixedly installed on the clamping flat plate, and clamping roller brackets are installed on both of the two inclined support plates.

[0006] Preferably, a top clamping plate is slidably installed on the top clamping plate bracket. A top clamping plate slide rod is also fixedly installed on the top clamping plate bracket. Both ends of the top clamping plate slide rod are fixedly fitted with the top clamping plate bracket. The top clamping plate is slidably sleeved on the top clamping plate slide rod. And a tension spring is sleeved around the bottom of the top clamping plate slide rod, and the bottom end of the tension spring is fixedly fitted with the bottom end of the top clamping plate slide rod.

[0007] Preferably, an electromagnet is also slidably sleeved on the top clamping plate slide rod. The electromagnet is arranged below the top clamping plate, and the electromagnet is fixedly fitted with the other end of the tension spring. The electromagnet is magnetically fitted with the top clamping plate. A clamping roller bracket is installed on the top clamping plate.

[0008] Preferably, two anti-rotation slide rods perpendicular to the clamping roller brackets are fixedly installed on all the clamping roller brackets. The anti-rotation slide rods on the inclined support plates corresponding to the clamping roller brackets are slidably fitted with the inclined support plates, and the anti-rotation slide rods on the top clamping plate corresponding to the clamping roller brackets are slidably fitted with the top clamping plate; and two clamping rollers are rotatably installed on each clamping roller bracket, and all the clamping rollers are used for clamping the pipeline.

[0009] Preferably, two symmetrically arranged servo motors are fixedly installed on the clamping flat plate. A spline shaft is fixedly installed on the output shaft of the servo motor. A hollow lead screw is sleeved on the spline shaft in a spline sliding manner. The hollow lead screw is in threaded transmission cooperation with the inclined support plate and in rotational cooperation with the clamping roller bracket.

[0010] Preferably, a servo motor is fixedly installed above the top clamping plate. A spline shaft is fixedly installed on the output shaft of the servo motor. A hollow lead screw is sleeved on the spline shaft in a spline sliding manner. The hollow lead screw is in threaded transmission cooperation with the top clamping plate and in rotational cooperation with the clamping roller bracket corresponding to the top clamping plate.

[0011] Preferably, the clamping roller and the clamping roller bracket are electrically conductive in cooperation. The clamping roller is in conductive contact with the pipeline to be welded. A high-voltage pulse is provided between the calibration needle and the pipeline to be welded; a high-voltage pulse is provided between the two pipelines to be welded. The high-voltage pulse is provided by a high-voltage generator. The two output ends of the high-voltage generator are respectively electrically connected to the two clamping roller brackets in the symmetrically arranged clamping parts. One of the clamping roller brackets in one clamping part is also electrically connected to the calibration needle.

[0012] The present invention has the following beneficial effects compared with the prior art: (1) In the present invention, by cooperating the calibration needle with the high-voltage generator, the deviation of the pipeline axis is visually judged by using the arc distribution. When the pipeline axis coincides with the calibration needle axis, the arc presents a uniform umbrella-shaped distribution, and the operator can accurately adjust the pipeline position accordingly, significantly improving the accuracy of axis alignment. Compared with the traditional calibration method relying on visual inspection, this device realizes objective detection through arc feedback, reduces human error, ensures the precise alignment of the weld end faces, and lays a foundation for subsequent high-quality welding, especially suitable for high-precision pipeline welding scenarios; (2) The clamping part of the present invention drives the hollow lead screw through a servo motor to flexibly adjust the position of the clamping roller bracket, and can adapt to pipelines with different diameters. The synergistic effect of the inclined support plate and the top clamping plate further enhances the clamping flexibility and meets the diverse pipeline processing requirements. Compared with the traditional fixed clamping device, the versatility of this device is significantly improved, reducing the cumbersome operation of replacing the fixture, lowering the equipment cost, and improving the processing efficiency; (3) The present invention coordinates and controls the inclination angle of the support disk through three swing adjustment electric cylinders to accurately adjust the end face angle of the clamped pipeline, ensuring that the weld end faces of the two pipelines are parallel. The traditional device relies on manual repeated adjustment, which is time-consuming and has low accuracy, while this device realizes the parallelism of the end face through automatic adjustment of the electric cylinder, significantly shortening the adjustment time, improving the welding consistency and quality, and reducing the welding defect rate; (4) The clamping part of the present invention adopts a design of the top clamping plate with an electromagnet and a tension spring. The clamping force of the clamping roller on the pipeline is enhanced through the tension of the tension spring to ensure that the pipeline is stable and does not slide during the processing. The design of the protective cover and the inclined through groove further improves the operation safety and prevents the pipeline from accidentally falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the protective cover of the present invention;

[0014] Figure 2 It is a schematic structural diagram of the whole of the present invention;

[0015] Figure 3 It is a schematic structural diagram of the calibration needle part of the present invention;

[0016] Figure 4 It is a schematic structural diagram of the ball head part of the present invention;

[0017] Figure 5 It is a schematic structural diagram of the spline shaft part of the present invention;

[0018] Figure 6 It is a schematic structural diagram of the support disk of the present invention.

[0019] In the figure: 101 - insulating base plate; 102 - protective cover; 103 - inclined through groove; 104 - clamping flat plate; 105 - handle; 106 - flange seat; 107 - calibration rod support; 108 - calibration rod; 109 - calibration adjustment electric cylinder; 110 - calibration needle; 111 - support disc; 112 - swing adjustment electric cylinder; 113 - ball head; 114 - inclined support plate; 115 - clamping roller support; 116 - top clamping plate support; 117 - top clamping plate slide bar; 118 - top clamping plate; 119 - electromagnet; 120 - tension spring; 121 - servo motor; 122 - anti-rotation slide bar; 123 - spline shaft; 124 - hollow lead screw; 125 - clamping roller. Detailed implementation manners

[0020] The following combines the appended Figures 1-6 drawings, and further illustrates the technical solution of the present invention through specific implementation manners.

[0021] The present invention provides a pipeline welding processing device, including an electric welding machine and a welding torch, and further including an insulating base plate 101. Two protective covers 102 are fixedly installed on the insulating base plate 101, and inclined through grooves 103 are formed in both of the two protective covers 102; clamping parts are arranged inside both of the two protective covers 102. The clamping parts can clamp pipelines with different diameters, and the parallelism of the weld end faces of two pipelines to be welded can be adjusted by the two clamping parts; a calibration rod support 107 is also fixedly installed on the insulating base plate 101. The top end of the calibration rod support 107 is movably installed with a calibration rod 108. A convex block in contact and cooperation with the calibration rod 108 is fixedly provided at the top end of the calibration rod support 107. The convex block is used to limit the swinging angle of the calibration rod 108 on the calibration rod support 107, so that the calibration rod 108 is parallel to the surface of the insulating base plate 101. A calibration adjustment electric cylinder 109 is fixedly installed on the calibration rod 108, and a calibration needle 110 is fixedly installed at the end of the telescopic rod of the calibration adjustment electric cylinder 109. A handle 105 is fixedly installed on the calibration rod 108. The clamping part includes a flange seat 106 fixedly matched with the insulating base plate 101. Three swing adjustment electric cylinders 112 arranged in an annular equidistant array are fixedly installed on the flange seat 106, and the end of the telescopic rod of each swing adjustment electric cylinder 112 is arranged in a spherical shape; a ball head 113 is movably installed at the center position of the upper surface of the flange seat 106, and a support plate 111 is fixedly installed on the ball head 113. The lower surface of the support plate 111 is in contact and cooperation with the ends of the telescopic rods of the three swing adjustment electric cylinders 112. A clamping flat plate 104 is fixedly installed on the support plate 111. One end of the clamping flat plate 104 is fixedly installed with a top clamping plate support 116, and the top clamping plate support 116 is perpendicular to the clamping flat plate 104. Two symmetrically and obliquely arranged inclined support plates 114 are fixedly installed on the clamping flat plate 104, and clamping roller supports 115 are installed on both of the two inclined support plates 114. A top clamping plate 118 is slidably installed on the top clamping plate support 116. A top clamping plate slide rod 117 is also fixedly installed on the top clamping plate support 116. The two ends of the top clamping plate slide rod 117 are fixedly matched with the top clamping plate support 116. The top clamping plate 118 is slidably sleeved on the top clamping plate slide rod 117, and a tension spring 120 is sleeved around the bottom of the top clamping plate slide rod 117. The bottom end of the tension spring 120 is fixedly matched with the bottom end of the top clamping plate slide rod 117. An electromagnet 119 is also slidably sleeved on the top clamping plate slide rod 117. The electromagnet 119 is arranged below the top clamping plate 118, and the electromagnet 119 is fixedly matched with the other end of the tension spring 120. The electromagnet 119 is magnetically matched with the top clamping plate 118. A clamping roller support 115 is installed on the top clamping plate 118.Two anti-rotation slide bars 122 perpendicular to the clamping roller bracket 115 are fixedly installed on all the clamping roller brackets 115. The inclined support plate 114 is slidably matched with the anti-rotation slide bars 122 on the clamping roller bracket 115, and the top clamping plate 118 is slidably matched with the anti-rotation slide bars 122 on the clamping roller bracket 115. And two clamping rollers 125 are rotatably installed on each clamping roller bracket 115, and all the clamping rollers 125 are used for clamping the pipeline. Two symmetrically arranged servo motors 121 are fixedly installed on the clamping flat plate 104. A spline shaft 123 is fixedly installed on the output shaft of the servo motor 121. A hollow lead screw 124 is sleeved on the spline shaft 123 in a spline sliding manner. The hollow lead screw 124 is in threaded transmission cooperation with the inclined support plate 114, and the hollow lead screw 124 is in rotational cooperation with the clamping roller bracket 115. A servo motor 121 is fixedly installed on the top clamping plate 118 in a suspended manner. A spline shaft 123 is fixedly installed on the output shaft of the servo motor 121. A hollow lead screw 124 is sleeved on the spline shaft 123 in a spline sliding manner. The hollow lead screw 124 is in threaded transmission cooperation with the top clamping plate 118, and the hollow lead screw 124 is in rotational cooperation with the clamping roller bracket 115 corresponding to the top clamping plate 118. The clamping roller 125 and the clamping roller bracket 115 are in conductive cooperation, and the clamping roller 125 is in conductive contact cooperation with the pipeline to be welded. A high-voltage pulse is provided between the calibration needle 110 and the pipeline to be welded. A high-voltage pulse is provided between the two pipelines to be welded. The high-voltage pulse is provided by a high-voltage generator. Two output ends of the high-voltage generator are respectively electrically connected to the two clamping roller brackets 115 in the symmetrically arranged clamping parts. One of the clamping roller brackets 115 in one clamping part is also electrically connected to the calibration needle 110.

[0022] The working principle of a pipeline welding and processing device disclosed in the present invention is as follows: Insert two pipelines to be welded into two inclined through grooves 103 (put one pipeline first, and then put the other pipeline after calibration). Place them on the clamping rollers 125 on two inclined support plates 114. In this process, manually lift the top clamping plate 118 to move the corresponding clamping roller brackets 115 on the top clamping plate 118 away, creating a space for the pipeline to enter. Control the two servo motors 121 on the inclined support plates 114 according to the diameter of the pipeline. The output shaft of the servo motor 121 drives the spline shaft 123 to rotate, and the spline shaft 123 drives the hollow lead screw 124 to rotate. The hollow lead screw 124 will move axially along the axis of the hollow lead screw 124 on the inclined support plate 114, and at the same time rotate with the clamping roller bracket 115, driving the clamping roller bracket 115 to move synchronously with the hollow lead screw 124. At the same time, the anti-rotation slide bar 122 slides relative to the inclined support plate 114. It is used to adjust the distance between the axis of the pipeline and the upper surface of the insulating base plate 101, so that the axis of the calibration needle 110 overlaps with the axis of the pipeline (when the calibration rod 108 swings to the horizontal position, the axis of the calibration needle 110 is parallel to the upper surface of the insulating base plate 101. According to the diameter of the pipeline, pre-control the telescopic rod of the calibration adjustment electric cylinder 109 to make the distance between the insulating base plate 101 and the calibration needle 110 reach the preset height, and then control the two servo motors 121 corresponding to the two inclined support plates 114 to align the axis of the pipeline with the calibration needle 110). At the same time, start the electromagnet 119. The electromagnet 119 generates magnetic force to attract the top clamping plate 118, making the electromagnet 119 fixed to the top clamping plate 118. At the same time, the tension spring 120 is stretched, and the pulling force of the tension spring 120 acts on the top clamping plate 118 through the electromagnet 119, so that the top clamping plate 118 receives a downward pulling force, and this force is transmitted to the clamping roller 125 to clamp and fix the pipeline through the clamping roller 125. At the same time, the corresponding servo motor 121 on the top clamping plate 118 is used to control the distance between the top clamping plate 118 and the clamping roller bracket 115. When the distance between the clamping roller bracket 115 and the top clamping plate 118 increases, the deformation amount of the tension spring 120 also increases, thereby increasing the clamping force on the pipeline.

[0023] At this time, power is supplied to the input end of the high-voltage generator (it can be powered by 18650 batteries, and the input voltage is 3 - 6V). At this time, an electric arc will be formed between the calibration needle 110 and the end face of the pipeline. If there is a deviation between the axis of the pipeline and the axis of the calibration needle 110, the formation of the electric arc will deviate to one side. If the axis of the pipeline overlaps with the axis of the calibration needle 110, the formation of the electric arc will be evenly distributed, presenting an umbrella-shaped structure (at this time, the subsequent clamping part does not need to be adjusted). It should be noted that after the high-voltage generator is powered on, the user should not touch the device (since the high-voltage generator is high-voltage and low-current, its actual power will not cause harm to the human body).

[0024] Subsequently, another section of pipeline is placed on the corresponding clamping part (first cut off the power supply of the high-voltage generator, and it is necessary to pull the handle 105 to swing the calibration rod 108 to the outside of the protective cover 102, so that the calibration needle 110 is away from the pipeline). Similarly, start the high-voltage generator. At this time, an electric arc will be formed at the butt joint of the two sections of pipeline. If there is a deviation in the welding butt joint position of the two pipelines, at this time, the electric arc will not form multiple uniform electric arcs between the welding end faces. At this time, control the two servo motors 121 on the inclined support plate 114 of this clamping part to make the axes of the two pipelines at the same height. At this time, the butt joints of the two pipelines may still not be parallel. At this time, control the three swing adjustment electric cylinders 112 and coordinate the telescopic lengths of the telescopic rods of the three swing adjustment electric cylinders 112 (always keep the end of the telescopic rod tightly pressed against the lower surface of the support disk 111), which can control the inclination angle of the support disk 111, thereby controlling the inclination angle of the clamping flat plate 104, and further controlling the inclination angle of the pipeline clamped on the clamping part, so that the welding end faces of the two pipelines are as parallel as possible, and the electric arcs at the weld are evenly distributed. Subsequently, cut off the power supply of the high-voltage generator, use a welding torch to perform preliminary pre-welding on the butt joint to fix the relative position between the two pipelines, and then remove the whole device (just cut off the power supply of the electromagnet 119), and then continue with more precise welding work.

Claims

1. A pipeline welding processing device, comprising an electric welding machine and a welding torch, characterized in that: It further includes an insulating base plate (101), on which two protective covers (102) are fixedly installed, and inclined through grooves (103) are formed in both of the two protective covers (102); clamping parts are arranged inside both of the two protective covers (102), the clamping parts can clamp pipes with different diameters, and the two clamping parts can adjust the parallelism of the weld end faces of two pipes to be welded; A calibration rod bracket (107) is further fixedly installed on the insulating base plate (101), a calibration rod (108) is movably installed at the top of the calibration rod bracket (107), and a convex block in contact and cooperation with the calibration rod (108) is fixedly provided at the top of the calibration rod bracket (107), the convex block is used to limit the swinging angle of the calibration rod (108) on the calibration rod bracket (107) to make the calibration rod (108) parallel to the surface of the insulating base plate (101), a calibration adjusting electric cylinder (109) is fixedly installed on the calibration rod (108), a calibration needle (110) is fixedly installed at the end of the telescopic rod of the calibration adjusting electric cylinder (109), and a handle (105) is fixedly installed on the calibration rod (108); The clamping part includes a flange seat (106) fixedly fitted with the insulating base plate (101). Three swing adjustment electric cylinders (112) arranged in an equidistant annular array are fixedly installed on the flange seat (106). The end of the telescopic rod of each swing adjustment electric cylinder (112) is arranged in a spherical shape. A ball head (113) is movably installed at the center position of the upper surface of the flange seat (106). A support plate (111) is fixedly installed on the ball head (113). The lower surface of the support plate (111) is in contact and cooperation with the ends of the telescopic rods of the three swing adjustment electric cylinders (112). A clamping flat plate (104) is fixedly installed on the support plate (111). One end of the clamping flat plate (104) is fixedly installed with a top clamping plate bracket (116). The top clamping plate bracket (116) is perpendicular to the clamping flat plate (104). Two symmetrically and obliquely arranged inclined support plates (114) are fixedly installed on the clamping flat plate (104). Clamping roller brackets (115) are installed on both of the two inclined support plates (114). A top clamping plate (118) is slidably installed on the top clamping plate bracket (116). A top clamping plate slide bar (117) is also fixedly installed on the top clamping plate bracket (116). The two ends of the top clamping plate slide bar (117) are fixedly fitted with the top clamping plate bracket (116). The top clamping plate (118) is slidably sleeved on the top clamping plate slide bar (117). And a tension spring (120) is sleeved around the bottom of the top clamping plate slide bar (117). The bottom end of the tension spring (120) is fixedly fitted with the bottom end of the top clamping plate slide bar (117). Two anti-rotation slide bars (122) perpendicular to the clamping roller brackets (115) are fixedly installed on all the clamping roller brackets (115). The anti-rotation slide bars (122) on the inclined support plates (114) corresponding to the clamping roller brackets (115) are in sliding cooperation with the inclined support plates (114). The anti-rotation slide bars (122) on the top clamping plate (118) corresponding to the clamping roller brackets (115) are in sliding cooperation with the top clamping plate (118). And two clamping rollers (125) are rotatably installed on each clamping roller bracket (115). All the clamping rollers (125) are used for clamping the pipeline. The clamping rollers (125) and the clamping roller brackets (115) are electrically conductive in cooperation. The clamping rollers (125) are in contact and conductive cooperation with the pipeline to be welded. A high-voltage pulse is provided between the calibration needle (110) and the pipeline to be welded. A high-voltage pulse is provided between the two pipelines to be welded. The high-voltage pulse is provided by a high-voltage generator. The two output ends of the high-voltage generator are respectively electrically connected to the two clamping roller brackets (115) in the symmetrically arranged clamping parts. One of the clamping roller brackets (115) in one clamping part is also electrically connected to the calibration needle (110).

2. The pipe welding and processing device according to claim 1, characterized in that: An electromagnet (119) is also slidably sleeved on the top clamping plate slide bar (117). The electromagnet (119) is arranged below the top clamping plate (118), and the other end of the electromagnet (119) is fixedly matched with the tension spring (120). The electromagnet (119) is magnetically matched with the top clamping plate (118), and a clamping roller bracket (115) is installed on the top clamping plate (118).

3. A pipeline welding and processing device according to claim 2, characterized in that: Two symmetrically arranged servo motors (121) are fixedly installed on the clamping flat plate (104). A spline shaft (123) is fixedly installed on the output shaft of the servo motor (121). A hollow lead screw (124) is sleeved on the spline shaft (123) in a spline sliding manner. The hollow lead screw (124) is in threaded transmission cooperation with the inclined support plate (114), and the hollow lead screw (124) is in rotational cooperation with the clamping roller bracket (115).

4. A pipe welding and processing device according to claim 3, characterized in that: A servo motor (121) is fixedly installed above the top clamping plate (118) in a suspended manner. A spline shaft (123) is fixedly installed on the output shaft of the servo motor (121). A hollow lead screw (124) is sleeved on the spline shaft (123) in a spline sliding manner. The hollow lead screw (124) is in threaded transmission cooperation with the top clamping plate (118), and the hollow lead screw (124) is in rotational cooperation with the clamping roller bracket (115) corresponding to the top clamping plate (118).

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