CN219616894U

CN219616894U - Automatic build-up welding device for inner wall

Info

Publication number: CN219616894U
Application number: CN202320660717.3U
Authority: CN
Inventors: 刘振英
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-09-01
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses an automatic build-up welding device for an inner wall, which comprises a workbench, a deflection structure for installing a workpiece, a welding gun structure for build-up welding the workpiece, a control structure and a heating structure, wherein before build-up welding, the heating structure carries out high-frequency heating on the workpiece, and heat is preserved after the temperature reaches a preset temperature; the control structure adopts a servo motor system to drive the deflection structure and the welding gun structure to finish welding the workpiece in a linkage way; the welding gun comprises a TIG inner wall welding gun. In the automatic build-up welding device for the inner wall, the welding gun can complete electric up-and-down, telescopic and manual left-and-right movement, and the workpiece can rotate and pitch; a servo motor system is adopted to drive a welding gun and a positioner, so that convenience is provided for the adjustment and linkage of equipment parameters, and a welding working mode of welding beads is automatically arranged; the welding machine has the advantages of high automation degree, high welding efficiency, simplicity and convenience in operation, convenience in daily maintenance and the like.

Description

Automatic build-up welding device for inner wall

Technical Field

The utility model relates to the technical field of welding tools, in particular to an automatic inner wall surfacing device suitable for inner wall operation of straight pipes, conical pipes and the like.

Background

In the prior art, a manual surfacing technology is adopted, a surfacing workpiece is placed on a two-axis mechanism to be clamped, and surfacing is carried out by controlling the rotation of the workpiece and matching with a manual clamping welding gun. The problems are: the surfacing efficiency is low, the labor intensity is high, people always need to clamp the welding gun and keep stable for a long time in the surfacing process, the labor intensity of the people is high in the process, the posture of the clamping welding gun needs to be adjusted in the process, the surfacing efficiency is affected, and the position of the welding gun is controlled by human factors, so that the quality of surfacing is unstable easily; meanwhile, the production environment is poor, dust, smoke and arc light in the welding process have a certain influence on human bodies, and long-term operation in the environment is easy to cause physical injury of operators.

Therefore, an inner wall automatic build-up welding device capable of automatically build-up welding and suitable for pipe inner wall work such as a straight pipe and a conical pipe has been provided.

Disclosure of Invention

The utility model provides an automatic inner wall surfacing device which can automatically surfacing and is suitable for pipe inner wall operation of straight pipes, conical pipes and the like.

The utility model discloses an automatic build-up welding device for an inner wall, which comprises a workbench, a shifting structure for installing a workpiece, a welding gun structure for build-up welding the workpiece and a control structure; the device also comprises a heating structure, wherein the heating structure is used for heating the workpiece at high frequency before overlaying, and preserving heat after reaching a preset temperature; the control structure adopts a servo motor system to drive the deflection structure and the welding gun structure to finish welding the workpiece in a linkage way; the welding gun comprises a TIG inner wall welding gun.

The heating structure comprises an induction heating sleeve, a bracket and an induction heating power supply, wherein the bracket is used for supporting the induction heating sleeve and driving the induction heating sleeve to slide back and forth along the axis direction of the welding gun.

The control structure comprises a display component, wherein the display component can display welding current, welding voltage, workpiece rotating speed, welding gun swing amplitude, welding gun swing frequency and wire feeding speed.

The control structure further comprises a handheld control box, and the handheld control box can adjust and control parameters of the control structure.

The control structure drives the TIG inner wall welding gun to at least move up and down, stretch out and draw back and move left and right.

The TIG inner wall welding gun comprises a heat-resistant gun body, a circulating water cooling system, a wire feeding structure and a welding gun head; wherein the heat-resistant gun body is made of beryllium-zirconium-copper material; the tail end of the heat-resistant gun body is connected with a cooling water pipe through silver brazing, and the cooling water pipe is communicated with the circulating water cooling system; one end of the wire feeding structure is arranged below the gun body in parallel, the other end of the wire feeding structure is bent and extends to the lower inner side of the welding gun head in an arc shape, and the wire feeding structure is fixedly connected with the gun body through an insulating heat-resistant connecting block.

The displacement structure comprises a displacement machine, the workpiece is fixed on a three-jaw chuck of the displacement machine, and the workpiece can at least rotate and pitch.

In summary, the technical scheme of the utility model has at least the following beneficial effects:

in the utility model, the welding gun can axially swing and weld, can perform various choices such as girth welding, longitudinal welding, spiral welding and the like, and simultaneously adopts a servo motor system to drive the welding gun and a positioner, thereby providing convenience for the adjustment and linkage of equipment parameters and automatically arranging the welding working modes of welding beads; the welding gun of the inner wall automatic surfacing device can finish electric up-and-down and telescopic and manual left-and-right movement, and the workpiece can rotate and move in a pitching way; therefore, the automatic build-up welding device for the inner wall has the advantages of high automation degree, high welding efficiency, simplicity and convenience in operation, convenience in daily maintenance and the like.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an automatic inner wall surfacing apparatus according to the present utility model;

FIG. 2 is a schematic side view of an inner wall automatic surfacing apparatus of the present utility model;

FIG. 3 is a schematic view of an automatic inner wall surfacing apparatus according to the present utility model;

FIG. 4 is a schematic cross-sectional view of an inner wall welding gun of the present utility model.

Reference numerals illustrate:

the welding machine comprises a 1-workbench, a 2-deflection structure, a 3-workpiece, a 4-welding gun structure, a 5-welding gun head, a 6-control structure, a 7-induction heating sleeve, an 8-bracket and a 9-induction heating power supply; 41-heat-resistant gun body, 42-cooling water channel, 43-circulating water channel, 44-tungsten electrode, 45-wire feeding structure, 46-insulating heat-resistant connecting block and 47-cooling water pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2 and 3, the present utility model discloses an automatic inner wall surfacing apparatus, which comprises a workbench 1, a deflection structure 2 for installing a workpiece 3, a welding gun structure 4 for surfacing the workpiece 3, and a control structure 6; the device also comprises a heating structure, wherein the heating structure is used for heating the workpiece 3 at high frequency before overlaying, and preserving heat after reaching a preset temperature; the control structure 6 adopts a servo motor system to drive the deflection structure 2 and the welding gun structure 4 to finish welding the workpiece 3 in a linkage way; the welding gun structure 4 comprises a TIG inner wall welding gun.

In the inner wall automatic surfacing device provided by the embodiment, the welding gun can axially swing and weld, can perform multiple choices of ring welding, longitudinal welding, spiral welding and the like, and simultaneously adopts a servo motor system to drive the welding gun and a position changing machine, thereby providing convenience for the adjustment and linkage of equipment parameters and automatically arranging the welding working mode of welding beads; the welding gun of the inner wall automatic surfacing device can finish electric up-and-down and telescopic and manual left-and-right movement, and the workpiece 3 can rotate and move in a pitching manner; therefore, the automatic build-up welding device for the inner wall has the advantages of high automation degree, high welding efficiency, simplicity and convenience in operation, convenience in daily maintenance and the like.

As shown in fig. 1, the heating structure comprises an induction heating sleeve 7, a bracket 8 for supporting the induction heating sleeve 7 and driving the induction heating sleeve 7 to slide back and forth along the axis direction of the welding gun, and an induction heating power supply 9; wherein, a heating coil is arranged in the induction heating sleeve 7. The induction heating sleeve 7 can be driven by the bracket 8 to slide reciprocally so as to facilitate the loading and unloading of the workpiece 3, the heating structure utilizes the induction principle to heat the workpiece 3, and when the set temperature is reached, the heating structure automatically reduces the power to enter a heat preservation state so as to facilitate the welding under the heat preservation environment. Specifically, as shown in fig. 3, before overlaying, the welding gun head 5 is at a position far away from the workpiece 3, firstly, the space is reserved to facilitate loading and unloading of the workpiece 3, secondly, the workpiece 3 is conveniently heated and the welding gun head 5 is prevented from being heated, the heating structure firstly heats the workpiece 3 to a preset temperature, then the heating structure reduces power to enter the heat preservation, and the temperature of the workpiece 3 can be maintained only by low power because the temperature of the workpiece 3 rises in the welding process, at this time, the welding gun head 5 stretches out into the workpiece 3 to weld, and after welding is completed, the welding gun head 5 is withdrawn to the position before welding.

The control structure 6 includes a display assembly that displays welding current, welding voltage, workpiece speed, gun swing frequency, wire feed speed. Specifically, the control structure 6 further comprises a handheld control box, which can adjust and control the control parameters of the control structure 6.

The control structure 6 drives the TIG inner wall welding gun to at least move up and down, stretch and retract and move left and right. The displacement structure 2 comprises a displacement machine, the workpiece 3 is fixed on a three-jaw chuck of the displacement machine, and the workpiece 3 can at least rotate and pitch.

As shown in fig. 4, the TIG inner wall welding gun of the present utility model comprises a heat-resistant gun body 41, a circulating water cooling system, a wire feeding structure 45 and a welding gun head 5; wherein, the heat-resistant gun body 41 is made of beryllium-zirconium-copper material; the tail end of the heat-resistant gun body 41 is connected with a cooling water pipe 47 through silver brazing, and the cooling water pipe 47 is communicated with the circulating water cooling system; one end of the wire feeding structure 45 is arranged below the gun body in parallel, the other end of the wire feeding structure 45 is bent and extends to the inner lower side of the welding gun head 5 in an arc shape, and the wire feeding structure 45 is fixedly connected with the gun body through an insulating heat-resistant connecting block 46.

In the utility model, the heat-resistant gun body 41 is made of beryllium-zirconium-copper material with good heat resistance and red hardness, and can maintain the rigidity of the gun body even if the temperature of the welding gun is high in the welding process, so that the welding stability is improved; meanwhile, the silver brazing adopted by the heat-resistant gun body 41 and the cooling water pipe 47 is more reliable than the threaded connection in the prior art, and the sealing grade of the welding gun is improved and higher system pressure can be resisted at the same time; thirdly, the wire feeding structure 45 is arranged below the heat-resistant gun body 41, so that on one hand, welding wires can be stably and smoothly fed to the welding points in the welding process, and on the other hand, the thickness of the TIG inner wall welding gun is prevented from being increased, the whole TIG inner wall welding gun is still long, and the welding gun is extremely suitable for surfacing, welding and the like of the inner wall of the small-diameter tube.

Specifically, the circulating water cooling system includes a cooling water channel 42 and a circulating water channel 43, the circulating water channel 43 is disposed around a tungsten electrode 44 of the welding gun head 5, and the diameter of the cooling water channel 42 is 5mm, and the inner diameter is 4mm in the prior art. In this embodiment, compared with the prior art, the internal size of the cooling water channel 42 in the heat-resistant gun body 41 is increased as much as possible, so that the amount of cooling water passing through the cooling water channel is increased, more heat can be taken away to reduce the temperature of the welding gun, and the welding gun can be cooled without dead angle by a circulating water cooling system, so that the welding gun is further improved. The welding gun can be operated for a long time in the work piece 3 at 600 ℃ through inspection.

Further, the welding gun head 5 includes a fixing frame for fixing the tungsten electrode 44, and fixing holes for fixing the tungsten electrode 44 are formed in the fixing frame, and the diameter of the fixing holes is 5mm, that is, the tungsten electrode 44 is a thickened tungsten electrode, and the diameter of a common tungsten electrode in the prior art is 3.2mm. Compared with the prior art, the welding gun adopts the thickened tungsten electrode, and the welding current can reach 500A during welding.

The TIG inner wall welding gun has an exquisite structure and can meet the requirement of the use in a small space, and can work for a long time under the high-current and surrounding high-temperature environments, and is suitable for the inner wall operation of the pipe with automatic build-up welding.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. An automatic build-up welding device of inner wall, it includes the workstation for install the structure (2) that shifts of work piece (3), carry out welder structure (4) of build-up welding to work piece (3), and control structure (6), its characterized in that: the device also comprises a heating structure, wherein the heating structure carries out high-frequency heating on the workpiece (3) before overlaying, and keeps the temperature after reaching a preset temperature; the control structure (6) adopts a servo motor system to drive the deflection structure (2) and the welding gun structure (4) to finish welding the workpiece (3) in a linkage way; the welding gun structure (4) comprises a TIG inner wall welding gun; the control structure (6) drives the TIG inner wall welding gun to at least move up and down, stretch and retract and move left and right; the TIG inner wall welding gun comprises a heat-resistant gun body (41), a circulating water cooling system, a wire feeding structure (45) and a welding gun head (5); wherein the heat-resistant gun body (41) is made of beryllium-zirconium-copper material; the tail end of the heat-resistant gun body (41) is connected with a cooling water pipe (47) through silver brazing, and the cooling water pipe (47) is communicated with the circulating water cooling system; one end of the wire feeding structure (45) is arranged below the gun body in parallel, the other end of the wire feeding structure (45) is bent and extends to the inner lower side of the welding gun head (5) in an arc shape, and the wire feeding structure (45) is fixedly connected with the gun body through an insulating heat-resistant connecting block (46).

2. The automatic surfacing device for the inner wall according to claim 1, wherein the heating structure comprises an induction heating sleeve (7), a bracket (8) for supporting the induction heating sleeve (7) and driving the induction heating sleeve to slide back and forth along the axis direction of the welding gun, and an induction heating power supply (9).

3. An automatic weld overlay device according to claim 2, wherein the control structure (6) comprises a display assembly that displays welding current, welding voltage, workpiece speed, gun swing frequency, wire feed speed.

4. An automatic inner wall surfacing device according to claim 3, characterized in that the control structure (6) further comprises a hand-held control box, which can adjust and control the control parameters of the control structure (6).

5. An automatic surfacing device for inner walls according to claim 1, characterized in that the displacement structure (2) comprises a displacement machine, the workpiece (3) is fixed on a three-jaw chuck of the displacement machine, and the workpiece (3) can at least rotate and tilt.