Automatic steel pipe flange welding production line

Abstract

The utility model relates to the technical field of steel pipe welding, in particular to an automatic steel pipe flange welding production line. Comprising a truss, a flange positioning and welding assembly, an upper supporting assembly, a lower supporting assembly and a base assembly, wherein the flange positioning and welding assembly is used for positioning a to-be-welded flange and welding the positioned and inserted flange and a steel pipe; the upper supporting assembly is used for pressing the upper side of the steel pipe; the lower supporting assembly is used for supporting the lower side of the steel pipe; the two flange positioning and welding assemblies are located at the two ends of the base assembly correspondingly, the upper supporting assembly is slidably installed below the truss, the base assembly is located below the truss, and the technical problems that in a steel pipe flange welding production line in the prior art, steel pipes are prone to deformation, so that the welding efficiency is low, and the welding quality is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe welding, in particular to an automatic production line for steel pipe flange welding. Background Art

[0002] In the steel pipe flange welding production line, the flanges are usually positioned at both ends, and then a conveying trolley is used to convey the steel pipe between the two flanges so that the steel pipe and the flange can be butted together for welding. Generally, a conveying device is used to convey the steel pipe to the welding station so that it can be butted together with the flange for welding. The utility model patent disclosed in the prior art is named "Flange Automatic Welding Production Line, Announcement No.: CN214602674U, including a loading stand, a unloading stand, a first supporting stand, a second supporting stand, an automatic loading assembly, an outer ring welding gun assembly, a transport trolley and an inner ring welding gun assembly, the first supporting stand The first supporting frame and the second supporting frame are arranged in parallel and at intervals, the loading frame and the unloading frame are respectively placed on both sides of the first supporting frame and the second supporting frame, and the transport vehicle can move among the loading frame, the first supporting frame, the second supporting frame and the unloading frame. Although the utility model can realize automatic welding of flanges and steel pipes with high production efficiency, there are still many problems: if the steel pipe is long, the steel pipe is prone to bending and deformation. Since the concentricity requirements of the steel pipe and the flange are high, the deformation of the steel pipe can easily lead to the inability to insert and connect the two ends of the steel pipe with the flange, which affects the welding efficiency and welding quality of the steel pipe flange. Utility Model Content

[0003] The utility model aims to provide an automatic production line for welding steel pipe flanges, which is used to solve the technical problems of low welding efficiency and poor welding quality caused by easy deformation of steel pipes in the steel pipe flange welding production line in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The automatic production line for steel pipe flange welding includes a truss, a flange positioning welding assembly for positioning the flange to be welded and welding the positioned and plugged flange and steel pipe, an upper support assembly for pressing the upper side of the steel pipe, a lower support assembly for supporting the lower side of the steel pipe, and a base assembly for the reciprocating sliding of the lower support assembly, the flange positioning welding assembly is divided into two groups and respectively located at the two ends of the base assembly, the upper support assembly is slidably installed under the truss, and the base assembly is located under the truss.

[0006] Furthermore, the upper support assembly includes an upper bracket slidably mounted on an upper guide rail, an upper power unit mounted on the upper bracket, a mounting plate driven by the power unit to reciprocate in the vertical direction, and a clamping frame mounted on the mounting plate for clamping the upper side of the steel pipe, and the upper guide rail is mounted on the truss.

[0007] Furthermore, the lower support assembly includes a lower bracket slidably mounted on the base assembly, a lower power unit mounted on the lower bracket, a lifting seat driven by the lower power unit for vertical lifting, and a lower bracket mounted on the lifting seat for supporting the lower side of the steel pipe.

[0008] Furthermore, the base assembly includes a lower base, which is located below the truss and has two co-linear lower guide rails installed thereon, with a gap being set between the two lower guide rails.

[0009] Furthermore, the clamping frame and the lower bracket are both configured as arc surfaces, the upper bracket and the lower bracket are both equipped with sliders, the upper guide rail and the lower guide rail are both configured as linear rails that slide with the sliders on the upper bracket and the lower bracket respectively, and the sliders of the upper bracket and the lower bracket are both provided with locking handles.

[0010] Furthermore, it also includes a pipe transport vehicle, which includes a lifting pallet for supporting steel pipes. The rollers of the pipe transport vehicle are located on loading and unloading rails, and the loading and unloading rails are vertically arranged with the lower guide rails and pass through the gap between the two lower guide rails.

[0011] Furthermore, it also includes a loading rack for loading materials and a unloading rack for unloading materials, and the loading rack and the unloading rack are respectively located on both sides of the lower base.

[0012] Furthermore, the flange positioning welding assembly includes a movable seat slidably installed at both ends of the lower guide rail, a horizontal power unit installed on the lower base for driving the movable seat to slide back and forth, a flange positioning plate installed on the movable seat, and a mechanical arm installed on the base, the flange positioning plate is used to position the flange to be welded, and the mechanical arm is used to weld the flange and steel pipe after positioning and docking.

[0013] Furthermore, the upper power unit adopts a clamping cylinder, the power end of which is connected to the mounting plate via a cylinder connecting seat, and the lower power unit adopts a screw lifter, the power end of which drives the lifting screw to perform lifting movements, one end of the lifting screw is fixedly mounted on the lower bracket, the other end of the lifting screw passes through the lower bracket and is threadedly rotated and lifted with the lower bracket, and the horizontal power unit adopts a propulsion cylinder, one end of which is connected to the lower base, and the other end is connected to the movable seat.

[0014] Furthermore, at least one upper guide rod is installed on the mounting plate, the upper guide rod passes through the guide bushing on the upper bracket and is slidably installed with the guide bushing, at least one lower guide rod is installed on the lifting seat, the lower guide rod passes through the guide shaft bracket and the lower bracket and is slidably installed with the bushing on the guide shaft bracket, and the guide shaft bracket is installed on the lower bracket.

[0015] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0016] (1) The utility model provides an upper support assembly and a lower support assembly to respectively press and support the upper and lower sides of the steel pipe, thereby correcting the horizontal straightness of the steel pipe to be welded, improving the concentricity of the steel pipe to be welded and the flange, so as to ensure that the flange and the steel pipe can be smoothly plugged and installed before the welding process, thereby improving the welding efficiency and welding quality of the steel pipe and the flange, and improving the matching degree of the flange and the steel pipe;

[0017] (2) The utility model realizes the movement of the clamping frame and the lower bracket in the vertical direction by respectively setting the upper support assembly and the lower support assembly, thereby realizing adaptive adjustment of the clamping and supporting positions according to the diameter of the steel pipe. The clamping frame and the lower bracket are provided with arc surfaces, so as to better match the shape of the steel pipe. The locking handle is provided, so as to facilitate the adjustment of the horizontal position of the clamping frame and the lower bracket and then lock them, so as to adapt to steel pipes of different lengths, so that the production line is suitable for steel pipes of different diameters and lengths;

[0018] (3) The utility model provides a pipe transport vehicle and a gap between two lower guide rails for the loading and unloading tracks of the pipe transport vehicle to pass through, thereby facilitating automatic loading and unloading and improving welding efficiency;

[0019] (4) The utility model adopts a clamping cylinder as the upper power unit, a screw lift as the lower power unit, and a propulsion cylinder as the horizontal power unit. The screw lift has higher operating accuracy, which is convenient for accurately positioning and supporting the steel pipe. The clamping cylinder and the propulsion cylinder operate faster and more stably.

[0020] (5) The utility model is helpful to improve the stability of the operation of the clamping frame and the lower bracket by providing the upper guide rod and the lower guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the workbench structure of the utility model;

[0023] Figure 3 This is a left view of the workbench of the utility model;

[0024] Figure 4 This is a top view of the workbench of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the lower support assembly of the utility model;

[0026] Figure 6 This is a left view of the lower support assembly of the utility model;

[0027] Figure 7 This is a top view of the lower support assembly of the utility model;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the upper support assembly of the utility model;

[0029] Fig. 9 This is the front view of the lower support assembly of the utility model.

[0030] In the figure, 100, truss;

[0031] 200, mechanical arm; 201, propulsion cylinder; 202, flange positioning plate; 203, moving seat;

[0032] 300, upper guide rail;

[0033] 400, transport and management vehicle;

[0034] 500, loading rack;

[0035] 600, upper support assembly; 601, upper bracket; 602, clamping cylinder; 603, cylinder connecting seat; 604, mounting plate; 605, clamping frame; 606, guide bushing; 607, upper guide rod;

[0036] 700, unloading rack;

[0037] 800, lower support assembly; 801, screw lift; 8011, lifting screw; 802, lower bracket; 803, fixed seat; 804, coupling; 805, locking handle; 806, lifting seat; 807, lower bracket; 808, lower guide rod; 809, guide shaft bracket;

[0038] 900, base assembly; 901, lower base; 902, lower guide rail. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0041] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0043] In the description of this application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. The following is a further explanation of the present invention in conjunction with the accompanying drawings and embodiments.

[0045] In order to solve the limitations of the prior art, this embodiment provides a technical solution, and the technical solution of the utility model is further described below in conjunction with the drawings and embodiments.

[0046] See attached Figure 1The automatic production line for steel pipe flange welding includes a truss 100, a flange positioning welding assembly for positioning the flange to be welded and welding the positioned and plugged flange and steel pipe, an upper support assembly 600 for pressing the upper side of the steel pipe, a lower support assembly 800 for supporting the lower side of the steel pipe, and a base assembly 900 for the reciprocating sliding of the lower support assembly 800, wherein the truss 100 is constructed of steel sections, the flange positioning welding assembly is divided into two groups and is respectively located at both ends of the base assembly 900, the upper support assembly 600 is slidably installed under the truss 100, and the base assembly 900 is located under the truss 100, and also includes a loading rack 500 for loading and a unloading rack 700 for unloading, and the loading rack 500 and the unloading rack 700 are respectively located on both sides of the lower base 901 in the base assembly 900. By providing the upper support assembly 600 and the lower support assembly 800, the upper and lower sides of the steel pipe are respectively compressed and supported, thereby achieving correction of the horizontal straightness of the steel pipe to be welded, and improving the concentricity of the steel pipe to be welded and the flange, so as to ensure that the flange and the steel pipe can be smoothly plugged and installed before the welding process, thereby improving the welding efficiency and welding quality of the steel pipe and the flange, and reducing the unqualified rate of welding products.

[0047] See attached Figure 5-9The upper support assembly 600 includes an upper bracket 601 slidably mounted on the upper guide rail 300, an upper power unit mounted on the upper bracket 601, a mounting plate 604 driven by the power unit to reciprocate in the vertical direction, and a clamping frame 605 mounted on the mounting plate 604 for clamping the upper side of the steel pipe, wherein the upper guide rail 300 is fixedly mounted on the truss 100, the upper power unit adopts a clamping cylinder 602, the power end of the clamping cylinder 602 is fixedly connected to the mounting plate 604 through a cylinder connecting seat 603, two upper guide rods 607 are installed on the mounting plate 604, the upper guide rods 607 pass through the guide bushing 606 on the upper bracket 601 and are slidably mounted with the guide bushing 606, and the guide bushing 606 is fixedly mounted on the upper bracket 601. The lower support assembly 800 includes a lower bracket 807 slidably mounted on the base assembly 900, a lower power unit mounted on the lower bracket 807, a lifting seat 806 driven by the lower power unit for vertical lifting, and a lower bracket 802 mounted on the lifting seat 806 for supporting the lower side of the steel pipe. The clamping frame 605 and the lower bracket 802 are both set as arc surfaces, and the diameter of the arc surface here is greater than the maximum value of the standard diameter of the steel pipe. The upper bracket 601 and the lower bracket 807 are both fixedly mounted with sliders, and the upper guide rail 300 and the lower guide rail 902 are both set as linear rails that slide with the sliders on the upper bracket 601 and the lower bracket 807 respectively, wherein fixed seats 803 are set at both ends of the lower bracket 807, and the sliders are fixedly mounted on the fixed seats 803. The sliders of the upper bracket 601 and the lower bracket 807 are both provided with locking handles 805, and the locking handles 805 are used to achieve mutual contact between the slider and the linear rail. For stillness, a locking handle 805 is provided on a conventional slider linear rail assembly, and the lower power part adopts a screw lift 801. The power end of the screw lift 801 drives the lifting screw 8011 to perform lifting movement. One end of the lifting screw 8011 is fixedly installed with the lower bracket 802, and the other end of the lifting screw 8011 passes through the lower bracket 807 and is threadedly rotated and lifted with the lower bracket 807. The meaning of the threaded rotation lifting installation here is: the power end of the screw lift 801 is fixedly connected to the screw seat through the coupling 804, and the screw seat is threadedly connected to the lifting screw 8011, thereby realizing the threaded lifting connection between the screw and the lower bracket 807, and two lower guide rods 808 are installed on the lifting seat 806. The lower guide rods 808 pass through the guide shaft bracket 809 and the lower bracket 807 and are slidably installed with the bushing on the guide shaft bracket 809, and the guide shaft bracket 809 is installed on the lower bracket 807.By respectively setting the upper support assembly 600 and the lower support assembly 800, the movement of the clamping frame 605 and the lower bracket 802 in the vertical direction is realized, and then the clamping and supporting positions are adaptively adjusted according to the diameter of the steel pipe. The arc-shaped clamping frame 605 and the lower bracket 802 are set to better match the shape of the steel pipe. The locking handle 805 is set to facilitate the adjustment of the horizontal position of the clamping frame 605 and the lower bracket 802 for locking, so as to adapt to steel pipes of different lengths, so that the production line is suitable for steel pipes of different diameters and lengths. By respectively setting the upper support assembly 600 and the lower support assembly 800, the movement of the clamping frame 605 and the lower bracket 802 in the vertical direction is realized, and then the clamping and supporting positions are adaptively adjusted according to the diameter of the steel pipe. The clamping frame 605 and the lower bracket 802 are set with arc surfaces, which is convenient for better matching with the shape of the steel pipe. The locking handle 805 is set to facilitate adjusting the position of the clamping frame 605 and the lower bracket 802 in the horizontal direction and then locking, so as to adapt to steel pipes of different lengths, so that the production line is suitable for steel pipes of different diameters and lengths. The upper support assembly 600 and the lower support assembly 800 are respectively set in four groups, and the four groups of clamping frames 605 and the lower bracket 802 are located on the same straight line in the vertical direction.

[0048] See attached Figure 2-4 The base assembly 900 includes a lower base 901, which is located below the truss 100 and has two colinear lower guide rails 902 installed thereon, with a gap set between the two lower guide rails 902. It also includes a pipe transport vehicle 400, which includes a lifting pallet for supporting steel pipes. The rollers of the pipe transport vehicle 400 are located on a loading and unloading track, which is vertically arranged with the lower guide rails 902 and passes through the gap between the two lower guide rails 902. By arranging the pipe transport vehicle 400 and arranging a gap between the two lower guide rails 902 for the loading and unloading track of the pipe transport vehicle 400 to pass through, it is convenient to realize automatic loading and unloading and improve welding efficiency.

[0049] See attached Figure 2-4 The flange positioning welding assembly includes a moving seat 203 slidably mounted on both ends of the lower guide rail 902, a horizontal power unit mounted on the lower base 901 for driving the moving seat 203 to slide back and forth, a flange positioning plate 202 mounted on the moving seat 203, and a mechanical arm 200 mounted on the base. The flange positioning plate 202 is used to position the flange to be welded, and the mechanical arm 200 is used to weld the flange and the steel pipe after positioning and docking. The horizontal power unit adopts a propulsion cylinder 201, one end of which is connected to the lower base 901, and the other end is connected to the moving seat 203.

[0050] When using this production line to weld steel pipe flanges, first position the flanges through two sets of flange positioning welding assemblies respectively, adjust the positions of the upper support assembly 600 and the lower support assembly 800 according to the length of the steel pipe, and the pipe transport vehicle 400 transports the steel pipe to be welded to the welding station through the loading and unloading tracks, the lifting pallet of the pipe transport vehicle 400 descends, and the steel pipe falls onto the lower bracket 802 of the lower support assembly 800, the clamping frame 605 of the upper support assembly 600 descends to clamp the steel pipe, and the thrust cylinders 201 at both ends of the lower base 901 are actuated to push the flanges at both ends to dock the flanges with the steel pipe, and the robot arm 200 is actuated to weld the flanges and the steel pipe. After welding is completed, the lifting pallet of the pipe transport vehicle 400 rises to lift the steel pipe and separate it from the lower bracket 802, and the pipe transport vehicle 400 transports the steel pipe away from the welding station for the next process.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0052] 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 in the protection scope of the present invention.

Claims

1. Steel pipe flange welding automatic production line, characterized by: The invention comprises a truss (100), a flange positioning welding assembly for positioning a flange to be welded and welding a positioned and plugged flange to a steel pipe, an upper support assembly (600) for pressing the upper side of the steel pipe, a lower support assembly (800) for supporting the lower side of the steel pipe, and a base assembly (900) for reciprocating sliding of the lower support assembly (800), wherein the flange positioning welding assembly is divided into two groups and is respectively located at two ends of the base assembly (900), the upper support assembly (600) is slidably installed below the truss (100), and the base assembly (900) is located below the truss (100).

2. The steel pipe flange welding automatic production line according to claim 1 is characterized in that: The upper support assembly (600) comprises an upper bracket (601) slidably mounted on an upper guide rail (300), an upper power unit mounted on the upper bracket (601), a mounting plate (604) driven by the power unit to perform vertical reciprocating motion, and a pressing frame (605) mounted on the mounting plate (604) for pressing the upper side of the steel pipe. The upper guide rail (300) is mounted on a truss (100).

3. The steel pipe flange welding automatic production line according to claim 2 is characterized in that: The lower support assembly (800) includes a lower bracket (807) slidably mounted on the base assembly (900), a lower power unit mounted on the lower bracket (807), a lifting seat (806) driven by the lower power unit to perform vertical lifting, and a lower bracket (802) mounted on the lifting seat (806) for supporting the lower side of the steel pipe.

4. The steel pipe flange welding automatic production line according to claim 3 is characterized in that: The base assembly (900) comprises a lower base (901), which is located below the truss (100) and on which two sections of collinear lower guide rails (902) are installed, with a gap being arranged between the two lower guide rails (902).

5. The steel pipe flange welding automatic production line according to claim 4 is characterized in that: The clamping frame (605) and the lower bracket (802) are both configured as arc surfaces, the upper bracket (601) and the lower bracket (807) are both equipped with sliders, the upper guide rail (300) and the lower guide rail (902) are both configured as linear rails that slide with the sliders on the upper bracket (601) and the lower bracket (807) respectively, and the sliders of the upper bracket (601) and the lower bracket (807) are both provided with locking handles (805).

6. The steel pipe flange welding automatic production line according to claim 4 is characterized in that: It also includes a pipe transport vehicle (400), which includes a lifting pallet for supporting steel pipes. The rollers of the pipe transport vehicle (400) are located on loading and unloading rails, which are vertically arranged with the lower guide rails (902) and pass through the gap between the two lower guide rails (902).

7. The steel pipe flange welding automatic production line according to claim 6 is characterized in that: The flange positioning welding assembly comprises a moving seat (203) respectively slidably mounted on both ends of a lower guide rail (902), a horizontal power unit mounted on a lower base (901) for driving the moving seat (203) to slide back and forth, a flange positioning plate (202) mounted on the moving seat (203), and a mechanical arm (200) mounted on the base, wherein the flange positioning plate (202) is used to position a flange to be welded, and the mechanical arm (200) is used to weld the flange and the steel pipe after positioning and docking.

8. The steel pipe flange welding automatic production line according to claim 7 is characterized in that: The upper power unit adopts a clamping cylinder (602), the power end of which is connected to the mounting plate (604) via a cylinder connecting seat (603); the lower power unit adopts a screw lift (801), the power end of which drives a lifting screw (8011) to perform lifting movements; one end of the lifting screw (8011) is fixedly mounted on the lower bracket (802), and the other end of the lifting screw (8011) passes through a lower bracket (807) and is threadedly rotated and lifted with the lower bracket (807); the horizontal power unit adopts a propulsion cylinder (201), one end of which is connected to a lower base (901), and the other end is connected to a movable seat (203).

9. The steel pipe flange welding automatic production line according to claim 8 is characterized in that: At least one upper guide rod (607) is installed on the mounting plate (604), and the upper guide rod (607) passes through the guide bushing (606) on the upper bracket (601) and is slidably installed with the guide bushing (606). At least one lower guide rod (808) is installed on the lifting seat (806), and the lower guide rod (808) passes through the guide shaft bracket (809) and the lower bracket (807) and is slidably installed with the bushing on the guide shaft bracket (809). The guide shaft bracket (809) is installed on the lower bracket (807).

10. The steel pipe flange welding automatic production line according to claim 9, characterized in that: It also includes a loading rack (500) for loading materials and a unloading rack (700) for unloading materials, wherein the loading rack (500) and the unloading rack (700) are respectively located on two sides of the lower base (901).

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