Pipe welding apparatus

Abstract

The application discloses a pipe welding device, which comprises a base frame, a welding module, a rotating disc and a positioning module. The welding module is arranged on the base frame and is provided with a welding head. The rotating disc is rotatably arranged on the base frame and is provided with a placing station for placing the pipe. The positioning module comprises a plurality of elastic pressing units and an auxiliary limiting unit. The auxiliary limiting unit is arranged on the base frame and forms a limiting interval for the pipe wall between the auxiliary limiting unit and the welding head. The auxiliary limiting unit can slide or roll against the inner wall of the pipe to make the outer wall of the pipe close to the welding head. The plurality of elastic pressing units are arranged on the rotating disc and are distributed around the placing station. The elastic pressing units can elastically abut against the outer wall of the pipe. The design can automatically adjust the position of the pipe, so that the welding head can better close to the outer wall of the pipe and the welding effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent processing equipment, in particular to a pipe welding device. BACKGROUND

[0002] The conventional welding process between the corrugated pipes is completed by manual work. In order to improve the welding efficiency, many manufacturers integrate automatic intelligent processing elements into this processing technology. The pipe is placed on a turntable, the turntable drives the pipe to rotate, and the welding head acts on the outer wall of the pipe to perform welding. However, the cross section of the pipe is roughly circular, but due to the setting of the corrugated section, the cross section of the pipe is not a uniform circle, and there is an inner concave or outer convex condition in some positions. During the welding process, the welding head cannot be attached to the outer surface of the pipe most of the time, and more manual participation and intervention are required, and true automation cannot be achieved. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a pipe welding device which automatically adjusts the position of the pipe so that the welding head can better approach the outer wall of the pipe and improve the welding effect.

[0004] According to the pipe welding device of the first aspect of the present application, the pipe welding device comprises a base frame, a welding module arranged on the base frame, the welding module being provided with a welding head, a turntable arranged rotatably on the base frame, the turntable being provided with a placement station for placing a pipe, and a positioning module comprising a plurality of elastic pressing units and an auxiliary limiting unit, the auxiliary limiting unit being arranged on the base frame, the auxiliary limiting unit and the welding head forming a limiting interval for placing the pipe wall, the auxiliary limiting unit being capable of sliding or rolling against the inner wall of the pipe to make the outer wall of the pipe close to the welding head, the plurality of elastic pressing units being arranged on the turntable and distributed around the circumference of the placement station, and the elastic pressing units being capable of elastically abutting against the outer wall of the pipe.

[0005] According to the pipe welding device of the present application, at least the following beneficial effects are achieved:

[0006] The pipe welding device, the worker can place the pipe to be welded on the rotating disc, the plurality of elastic pressing units abut against the outer side wall of the pipe to fix the pipe, and the pipe wall to be welded is located in the limiting interval between the auxiliary limiting unit and the welding head, in the process of welding, the rotating disc rotates to change the position of the pipe in the circumferential direction, so that the pipe wall in different positions in the circumferential direction enters the limiting interval, and due to the pressing force of the auxiliary limiting unit, part of the elastic pressing units is extruded and deformed, and part of the elastic pressing units restores and keeps pressing the outer side wall of the pipe, so that even if the cross section of the pipe is not a uniform circle, the position of the pipe can be adjusted to make the outer side wall of the pipe wall entering the limiting interval can be better contacted by the welding head, the position of the pipe is automatically adjusted, the welding head can better close to the outer side wall of the pipe, and the welding effect is improved.

[0007] According to some embodiments of the present application, the elastic pressing unit is at least three, and a plurality of elastic pressing units are rotationally symmetrically distributed around the circumferential direction of the placing station.

[0008] According to some embodiments of the present application, the elastic pressing unit comprises an elastic member and a pressing member, the elastic member is arranged on the rotating disc, and the elastic member is connected with the pressing member to drive the pressing member to abut against the outer side wall of the pipe.

[0009] According to some embodiments of the present application, a sliding guide structure is arranged between the rotating disc and the pressing member, the pressing member is slidably connected with the rotating disc through the sliding guide structure, and the pressing member can slide along the sliding guide structure to approach or move away from the placing station.

[0010] According to some embodiments of the present application, the surface of the pressing member close to the outer side wall of the pipe is provided with a friction increasing structure.

[0011] According to some embodiments of the present application, the friction increasing structure comprises a plurality of parallel arranged convex strips, the length direction of the convex strip is different from the tangential direction of the rotating disc.

[0012] According to some embodiments of the present application, the auxiliary limiting unit comprises a column and a roller rotatingly arranged on the column, the column is arranged on the base frame, and the side wall of the roller is in rolling connection with the inner side wall of the pipe.

[0013] According to some embodiments of the present application, the rotating disc is provided with an avoiding opening, and the column passes through the avoiding opening to be connected with the base frame.

[0014] According to some embodiments of the present application, the welding module further comprises a displacement adjusting mechanism arranged on the base frame, the displacement adjusting mechanism being connected with the welding head member to adjust the position of the welding head member.

[0015] According to some embodiments of the present application, the displacement adjusting mechanism comprises a horizontal displacement adjusting unit and a vertical displacement adjusting unit, the horizontal displacement adjusting unit being arranged on the base frame, the horizontal displacement adjusting unit being connected with the vertical displacement adjusting unit to drive the vertical displacement adjusting unit to horizontally displace, the vertical displacement adjusting unit being connected with the welding head member to drive the welding head member to vertically displace.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description, which, taken in conjunction with the accompanying drawings, that will further provide a better understanding of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 isometric view of one of the embodiments of the pipe welding device according to the present application;

[0019] Figure 2 isometric view of one of the embodiments of the pipe welding device according to the present application;

[0020] Figure 3 front view of one of the embodiments of the pipe welding device according to the present application;

[0021] Figure 4 top view of one of the embodiments of the pipe welding device according to the present application.

[0022] REFERENCE NUMERALS

[0023] base frame 100; welding module 200; welding head member 210; horizontal displacement adjusting unit 220; vertical displacement adjusting unit 230; rotating disc member 300; positioning module 400; elastic pressing unit 410; elastic member 411; pressing member 412; auxiliary limiting unit 420; stand 421; roller 422; sliding guide structure 430; sliding groove 431; sliding block 432; friction increasing structure 500; pipe 600. DETAILED DESCRIPTION

[0024] Embodiments of the present application are described below in detail with reference to the accompanying drawings, in which like reference numerals refer to like elements throughout. The embodiments described below are examples of the present application, and are not intended to limit the present application.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer", 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 this 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 limiting this invention.

[0026] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figures 1-4 As shown, a pipe fitting 600 welding device according to a first aspect embodiment of the present invention includes a base frame 100, a welding module 200, a turntable 300, and a positioning module 400. The welding module 200 is disposed on the base frame 100 and is provided with a welding head 210. The turntable 300 is rotatably disposed on the base frame 100 and is provided with a placement station for placing the pipe fitting 600. The positioning module 400 includes a plurality of elastic pressing units 410 and an auxiliary limiting unit 420. The auxiliary limiting unit 420 is set on the base frame 100. The auxiliary limiting unit 420 and the welding head 210 form a limiting range for placing the pipe wall of the pipe fitting 600. The auxiliary limiting unit 420 can slide or roll against the inner side wall of the pipe fitting 600 so that the outer side wall of the pipe fitting 600 is close to the welding head 210. Multiple elastic pressing units 410 are set on the turntable 300 and the multiple elastic pressing units 410 are distributed around the circumference of the placement station. The elastic pressing units 410 can elastically abut against the outer side wall of the pipe fitting 600.

[0029] The welding head 210 can be selected from a conventional electric welding gun, a gas welding head and the like, a motor, a driving gear and a driven gear are arranged on the base frame 100, the driven gear is connected with the rotating disc 300, the driving gear is engaged with the driven gear, the motor is connected with the driving gear, and the motor drives the rotating disc 300 to rotate by driving the driving gear and the driven gear.

[0030] The design can be applied to the welding of the corrugated pipe 600 and can also be applied to the welding of a common round pipe 600.

[0031] In the pipe 600 welding device, the worker can place the pipe 600 to be welded on the rotating disc 300, the plurality of elastic pressing units 410 abut against the outer side wall of the pipe 600 to fix the pipe 600, and the pipe wall to be welded is located in the limiting interval between the auxiliary limiting unit 420 and the welding head 210. During the welding process, the rotating disc 300 rotates to change the position of the pipe 600 in the circumferential direction, so that the pipe wall at different positions in the circumferential direction enters the limiting interval. Due to the pressing force of the auxiliary limiting unit 420, part of the elastic pressing units 410 is extruded and deformed, and part of the elastic pressing units 410 restores and maintains the pressing of the outer side wall of the pipe 600. Therefore, even if the cross section of the pipe 600 is not a uniform circle, the position of the pipe 600 can be adjusted to make the outer side wall of the pipe wall entering the limiting interval can be better contacted by the welding head 210. The design automatically adjusts the position of the pipe 600, so that the welding head 210 can better approach the outer side wall of the pipe 600, and the welding effect is improved.

[0032] In some embodiments of the present application, as shown in Figure 4 The plurality of elastic pressing units 410 are rotationally symmetrically distributed around the work station.

[0033] The at least three elastic pressing units 410 can uniformly press the outer side wall of the pipe 600 by the elastic pressing force, so that the pipe 600 is more smooth when the position is automatically adjusted.

[0034] In some embodiments of the present application, the elastic pressing unit 410 includes an elastic member 411 and a pressing member 412. The elastic member 411 is arranged on the rotating disc 300, and the elastic member 411 is connected with the pressing member 412 to drive the pressing member 412 to abut against the outer side wall of the pipe 600.

[0035] The elastic member 411 can be a spring or an elastic rubber column, and the pressing member 412 can be made of plastic, resin or alloy material, and can press against the pipe 600 to provide sufficient friction to prevent the pipe 600 from sliding relative to the pressing member 412. The elastic member 411 drives the pressing member 412 to abut against the outer sidewall of the pipe 600, and when the rotating disc 300 rotates and the pipe 600 is pressed by the auxiliary limiting unit 420, the elastic member 411 of the partial elastic pressing unit 410 is compressed and deformed, and the elastic member 411 of the partial elastic pressing unit 410 restores the deformation and extends, thereby allowing the pipe 600 to be finely positioned.

[0036] In some embodiments of the present application, as shown in Figure 2 、 3 The sliding guide structure 430 is arranged between the rotating disc 300 and the pressing member 412, and the pressing member 412 is slidably connected to the rotating disc 300 through the sliding guide structure 430, and the pressing member 412 can slide towards or away from the placement station along the sliding guide structure 430.

[0037] Through the guidance of the sliding guide structure 430, the pressing member 412 can slide towards or away from the placement station more smoothly under the force of the pipe 600 and the elastic member 411, and the pressing force of the pressing member 412 abutting against the outer wall of the pipe 600 is more concentrated and stable.

[0038] Specifically, the sliding guide structure 430 corresponds to the number of the elastic pressing units 410 one by one, and the sliding guide structure 430 can include a sliding groove 431 opened on the rotating disc 300 and a sliding block 432 arranged on the pressing member 412, the sliding block 432 is slidably arranged in the sliding groove 431, so that the pressing member 412 moves in the direction guided by the sliding guide structure 430.

[0039] In some embodiments of the present application, the surface of the pressing member 412 close to the outer sidewall of the pipe 600 is provided with a friction increasing structure 500, which can increase the friction between the pressing member 412 and the outer sidewall of the pipe 600, so that the plurality of elastic pressing units 410 can clamp the pipe 600.

[0040] In some embodiments of the present application, the friction increasing structure 500 includes a plurality of parallel arranged protrusions, the length direction of the protrusions is different from the tangential direction of the rotation of the rotating disc 300, the pipe 600 is placed on the rotating disc 300, and the rotating disc 300 drives the pipe 600 to rotate, at this time, the pipe 600 can slip relative to the pressing member 412 in the tangential direction of the rotation, and by setting the length direction of the protrusions to be different from the tangential direction of the rotation of the rotating disc 300, the rotation of the pipe 600 relative to the pressing member 412 can be effectively prevented.

[0041] In some embodiments of the present application, as shown in Figure 3 , 4 The auxiliary limiting unit 420 includes a column 421 and a roller 422 rotatably arranged on the column 421, the column 421 is arranged on the base frame 100, and the side wall of the roller 422 is in rolling connection with the inner side wall of the pipe 600.

[0042] The roller 422 is pressed against the inner side wall of the pipe 600 to drive the outer side wall of the pipe 600 to be close to the welding head 210, and the side wall of the roller 422 is in rolling friction with the inner side wall of the pipe 600, which can reduce the friction between the side wall of the roller 422 and the inner side wall of the pipe 600, so that the turntable 300 can better drive the pipe 600 to rotate.

[0043] In some embodiments of the present application, as shown in Figure 4 The turntable 300 is provided with a avoiding opening, the column 421 passes through the avoiding opening and is connected with the base frame 100, so that the turntable 300 does not hinder the arrangement of the auxiliary limiting unit 420.

[0044] In some embodiments of the present application, the welding module 200 further includes a displacement adjusting mechanism, the displacement adjusting mechanism is arranged on the base frame 100, and the displacement adjusting mechanism is connected with the welding head 210 to adjust the position of the welding head 210. Before welding, the worker can first arrange the pipe 600 on the turntable 300, and then the displacement adjusting mechanism adjusts the position of the welding head 210, so that the welding end of the welding head 210 is close to the part of the outer side wall of the pipe 600 that needs to be welded, so that the welding is more accurate and the welding effect is improved.

[0045] In some embodiments of the present application, as shown in Figure 1 , 3 The displacement adjusting mechanism includes a horizontal displacement adjusting unit 220 and a lifting adjusting unit 230, the horizontal displacement adjusting unit 220 is arranged on the base frame 100, the horizontal displacement adjusting unit 220 is connected with the lifting adjusting unit 230 to drive the lifting adjusting unit 230 to horizontally move, and the lifting adjusting unit 230 is connected with the welding head 210 to drive the welding head 210 to lift.

[0046] The horizontal adjustment unit 220 and the vertical adjustment unit 230 can each include a nut, a screw rod, a slide rail, a sliding block 432, and a driving member. Taking the vertical adjustment unit 230 as an example, the screw rod and the slide rail are arranged on the horizontal adjustment unit 220, the horizontal adjustment unit 220 can drive the screw rod and the slide rail to move leftward and rightward, the sliding block 432 and the nut are connected with the welding head 210, the sliding block 432 is arranged on the slide rail and can slide along the slide rail, the nut is rotationally connected with the screw rod, and the driving member can be a motor or a rotary cylinder. The driving member drives the screw rod to rotate, thereby driving the welding head 210 to move up and down. The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features falls within the scope of the present disclosure as long as the combination does not exist.

[0047] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pipe fitting welding device, characterized in that, include: Base frame; A welding module is mounted on the base frame, and the welding module is equipped with a welding head. A turntable component is rotatably mounted on the base frame, and the turntable component is provided with a placement station for placing pipe fittings; The positioning module includes multiple elastic pressing units and auxiliary limiting units. The auxiliary limiting units are disposed on the base frame and form a limiting range between the auxiliary limiting units and the welding head to accommodate the pipe wall. The auxiliary limiting units can slide or roll against the inner wall of the pipe so that the outer wall of the pipe is close to the welding head. Multiple elastic pressing units are disposed on the turntable and are distributed circumferentially around the placement station. The elastic pressing units can elastically abut against the outer wall of the pipe.

2. The pipe fitting welding device according to claim 1, characterized in that: There are at least three elastic pressing units, and the multiple elastic pressing units are symmetrically distributed around the circumference of the placement station.

3. The pipe fitting welding device according to claim 1, characterized in that: The elastic pressing unit includes an elastic element and a pressing element. The elastic element is disposed on the turntable and is connected to the pressing element so as to drive the pressing element to abut against the outer wall of the pipe.

4. The pipe fitting welding device according to claim 3, characterized in that: A sliding guide structure is provided between the turntable and the pressing member. The pressing member is slidably connected to the turntable through the sliding guide structure, and the pressing member can slide along the sliding guide structure to move closer to or away from the placement station.

5. The pipe fitting welding device according to claim 3, characterized in that: The surface of the pressure member near the outer wall of the pipe is provided with a friction-enhancing structure.

6. The pipe fitting welding device according to claim 5, characterized in that: The friction-enhancing structure includes multiple parallel protrusions, the length direction of which is not in the same direction as the tangential direction of the rotation of the turntable.

7. The pipe fitting welding device according to claim 1, characterized in that: The auxiliary limiting unit includes a column and a roller rotatably mounted on the column. The column is mounted on the base frame, and the side wall of the roller is rotatably connected to the inner side wall of the pipe fitting.

8. A pipe fitting welding device according to claim 7, characterized in that: The turntable component is provided with a clearance opening, and the column passes through the clearance opening to connect with the base frame.

9. A pipe fitting welding device according to claim 1, characterized in that: The welding module also includes a displacement adjustment mechanism, which is mounted on the base frame and connected to the welding head to adjust the position of the welding head.

10. A pipe fitting welding device according to claim 9, characterized in that: The displacement adjustment mechanism includes a lateral adjustment unit and a lifting adjustment unit. The lateral adjustment unit is mounted on the base frame and is connected to the lifting adjustment unit to drive the lifting adjustment unit to move laterally. The lifting adjustment unit is connected to the welding head to drive the welding head to move up and down.

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