CN210451335U - Pipe welding tool equipment - Google Patents

Abstract

The utility model provides a pipe welding tooling device, which comprises a lower electrode component, an upper electrode component and an upper electrode motion component; when the upper electrodes move to the stroke end position towards the reference axis, the upper electrodes form an upper electrode head surrounding the conduit, the upper electrode head is pressed on the conduit flange by applying pressure to the upper electrode head, and the welding quality is good; through the setting of pipe locating pin and pipe locating pin, the location effect of pipe is better, has improved the coaxiality of pipe and pipe interface, further improves pipe welding effect, has good practicality.

Description

Pipe welding tool equipment

Technical Field

The utility model relates to a welding field, concretely relates to pipe welding tool equipment.

Background

Fig. 1 shows a three-dimensional schematic view of a compressor housing and conduit connection. A guide pipe interface 3 for connecting the guide pipe 2 is arranged on the compressor shell 1, the end surface of the guide pipe interface 3 is a plane, and a guide pipe flange 4 is arranged at the lower end of the guide pipe 2; in specific implementation, the end face of the conduit interface 3 and the end face of the conduit flange 4 need to be welded into a whole.

In specific implementation, a plurality of operation difficulties exist, such as poor flexibility of tooling equipment, easy interference with the compressor shell 1 or the guide pipe 2, slow welding speed and low welding efficiency; the catheter interface 3 and the catheter flange 4 are in plane contact, so that the coaxiality of the catheter interface 3 and the catheter 2 is difficult to ensure; pressure is required to be applied between the compressor shell 1 and the guide pipe 2 to ensure the welding effect, but the position of the guide pipe 2 for applying the pressure is less, and the design difficulty of tooling equipment is high; the closer the electrode is arranged to the welding surface, the better the welding effect is and the lower the influence degree of high temperature on a workpiece during welding operation is, in the prior embodiment, the electrode tip is arranged on the upper end surface of the guide pipe, the welding surface has better electrification uniformity, the whole guide pipe can generate heat during welding, and the instability and deformation of the guide pipe are easily caused due to large welding pressure; or the U-shaped electrode tip is clamped outside the guide pipe to realize welding, and the U-shaped electrode tip can be clamped on the guide pipe to realize welding, but the welding current is not uniformly distributed, and the welding quality is poor.

SUMMERY OF THE UTILITY MODEL

In order to guarantee the welding effect between pipe and the compressor housing, improve welding efficiency, the embodiment of the utility model provides a pipe welding tool equipment, this pipe welding tool equipment have characteristics such as welding quality is good, welding efficiency height.

Correspondingly, the utility model provides a pipe welding tooling device, which comprises a lower electrode component, an upper electrode component and an upper electrode guide component, wherein a reference axis arranged along the vertical direction is arranged in the space;

the lower electrode assembly includes a lower electrode tip having an axis collinear with the reference axis;

the upper electrode assembly is arranged above the lower electrode assembly and comprises more than two upper electrodes moving along the horizontal direction; based on the upper electrode guide assembly, the two or more upper electrodes move towards or away from the reference axis, and the two or more upper electrodes move along the direction of the reference axis;

when the more than two upper electrodes respectively move towards the reference axis to the stroke end position, the side walls of the more than two upper electrodes facing one side of the reference axis enclose an upper electrode head, and the axis of the upper electrode head is collinear with the reference axis.

In an alternative embodiment, the lower electrode assembly further comprises a case positioning pin; the shell positioning pin is arranged above the electrode head, and the axis of the shell positioning pin is collinear with the reference axis.

In an alternative embodiment, the lower electrode assembly further comprises a guide tube pre-positioning pin disposed above the case positioning pin.

In an alternative embodiment, the upper electrode assembly includes a conduit alignment pin having an axis collinear with the reference axis and the conduit alignment pin moves in the direction of the reference axis.

In an optional embodiment, the upper electrode assembly includes two upper electrodes, and the two upper electrodes are a first upper electrode and a second upper electrode respectively; one side of the first upper electrode facing the reference axis is provided with a semi-annular first sub electrode tip, and one side of the second upper electrode facing the reference axis is provided with a semi-annular second sub electrode tip;

when the two upper electrodes move towards the reference axis to the stroke end position, the first sub electrode tip and the second sub electrode tip are combined to form an annular upper electrode tip.

In an optional embodiment, the upper electrode assembly further includes two connection blocks, where the two connection blocks are a first connection block and a second connection block respectively;

the bottom surface of the first connecting block is fixedly connected with the top surface of the first upper electrode, and the bottom surface of the second connecting block is fixedly connected with the top surface of the second upper electrode;

the first upper electrode is driven based on the first connection block, and the second upper electrode is driven based on the second connection block.

In an alternative embodiment, the first connecting block and the second connecting block are respectively provided with a conduit avoiding groove on one side facing the reference axis.

In an optional embodiment, the upper electrode guide assembly includes a linear motion guide member having an axis arranged along a horizontal direction, and the first connecting block and the second connecting block are respectively slidably fitted on the linear motion guide member;

the first and second connecting blocks move toward or away from the reference axis based on the linear motion guide, respectively.

In an optional embodiment, the pipe welding tooling equipment further comprises an insulating layer, wherein the insulating layer is arranged on the top surface of the upper electrode guide assembly;

or the pipe welding tool equipment further comprises an insulating layer and an electrode balancer, wherein the insulating layer is arranged on the top surface of the upper electrode guide assembly, and the electrode balancer is arranged on the top surface of the insulating layer.

In an alternative embodiment, the two or more upper electrodes are driven based on a pneumatic or hydraulic drive element.

The utility model provides a pipe welding tooling device, a plurality of upper electrodes in an upper electrode assembly of the pipe welding tooling device form an upper electrode head, the upper electrode head is not easy to interfere with a compressor shell or a pipe before operation, the pertinence of the welding position is good during operation, the welding current is uniformly distributed, and the welding effect is good; by applying pressure to the upper electrode head, relative pressure exists between the guide pipe and the compressor shell during welding, and the welding surface is good in forming quality; the shell positioning pin, the guide pipe pre-positioning pin and the guide pipe positioning pin are arranged in a matched mode, so that the shell of the compressor and the guide pipe can be effectively positioned, the coaxiality of a guide pipe flange and a guide pipe interface is guaranteed, and the welding quality is improved; due to the arrangement of the cooling water channel, the operation problems of the upper electrode assembly and the lower electrode assembly can be effectively reduced, and the service lives of the upper electrode assembly and the lower electrode assembly are prolonged; the insulating layer can effectively prevent welding current from being transmitted to external equipment, and has a good safety protection effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 shows a three-dimensional schematic view of a compressor housing and conduit connection;

fig. 2 shows a schematic three-dimensional structure diagram of a pipe welding tooling device according to a first embodiment of the present invention;

fig. 3 shows a schematic three-dimensional structure diagram of a pipe welding tooling device according to a second embodiment of the present invention;

fig. 4 shows a schematic three-dimensional structure of a lower electrode assembly according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a lower electrode assembly according to an embodiment of the present invention;

fig. 6 shows a partially enlarged schematic view of a catheter pre-positioning pin arrangement according to an embodiment of the present invention;

fig. 7 shows a schematic three-dimensional structure diagram of an upper electrode assembly and an upper electrode guide assembly according to an embodiment of the present invention;

fig. 8 shows a schematic cross-sectional structure diagram of an upper electrode assembly and an upper electrode guiding assembly according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

fig. 2 shows the utility model discloses pipe welding tooling equipment three-dimensional structure sketch map of embodiment, the embodiment of the utility model provides a pipe welding tooling equipment, pipe welding tooling equipment includes electrode subassembly 20 down, goes up electrode assembly 30 and goes up electrode guide assembly 40. For convenience of description, the embodiment of the present invention provides a reference axis (not shown in the figure) in the space, which is arranged along the vertical direction.

Basically, the lower electrode assembly 20 includes a lower electrode tip having an axis collinear with the reference axis; the upper electrode assembly 30 is disposed above the lower electrode assembly, the upper electrode assembly 30 including two or more upper electrodes moving in a horizontal direction; based on the upper electrode guide assembly 40, the two or more upper electrodes move toward or away from the reference axis, and the two or more upper electrodes move in the direction of the reference axis; when the more than two upper electrodes respectively move towards the reference axis to the stroke end position, the side walls of the more than two upper electrodes facing one side of the reference axis enclose an upper electrode head, and the axis of the upper electrode head is collinear with the reference axis.

Furthermore, the utility model discloses pipe welding tool equipment still includes that 50 insulating layers of insulating layer 50 are used for isolated electrode assembly and outside electricity to be connected, prevents that the high tension electricity of electrode assembly from passing to the external world.

Example two

Fig. 3 shows the utility model discloses pipe welding tooling equipment three-dimensional structure sketch map of pipe welding tooling equipment embodiment. On the basis of the first embodiment of the utility model, the utility model discloses pipe welding tool equipment is provided with electrode balancer 60 on insulating layer 50, and electrode balancer 60 is used for providing comparatively stable welding pressure to electrode on first upper electrode and the second simultaneously, guarantees that the atress of electrode is balanced on first upper electrode and the second, improves welding quality.

The distinguishing feature of the first embodiment and the second embodiment is whether the electrode balancer 60 is disposed on the insulating pad, and other technical features are common technical features except for the distinguishing feature, which will be described below; the partial view is established and shown on the basis of the pipe welding tooling equipment of the second embodiment.

With the structure shown in fig. 1, during welding operation, the lower electrode tip is against the catheter hub 3, and the two or more upper electrodes are guided by the upper electrode guide assembly to form an upper electrode tip surrounding the catheter 2; the upper electrode guide assembly 40 and the more than two upper electrodes move downwards along the reference axis under the driving of the electrode balancer 60, and the upper electrode heads are pressed on the guide pipe flange 4; the welding is completed by electrifying the upper electrode head and the lower electrode head.

In the embodiment of the present invention, the above electrode assembly includes two upper electrodes as an example.

Fig. 4 shows a three-dimensional structure diagram of a lower electrode assembly according to an embodiment of the present invention, and fig. 4 shows a sectional structure diagram of a lower electrode assembly according to an embodiment of the present invention. The lower electrode assembly 20 of the embodiment of the present invention includes a lower electrode tip 201, a lower electrode tip connection plate 204, a lower electrode holder 205, and a case positioning pin 202.

In particular, the lower electrode tip 201 axis is coaxial with the reference axis 9. The lower electrode head 201 is fixed to the top surface of the lower electrode holder 205 on the basis of the lower electrode head attachment plate 204. In specific implementation, the lower electrode tip 201 needs to be designed to be matched with the conduit interface 3, as shown in fig. 5, the sidewall of the lower electrode tip 201 is set to be a drawing surface inclined to the inner side, the size of the top surface is larger than the size of the conduit interface 3 of the compressor housing 1, the top surface is matched with the inner wall of the compressor housing 1 around the conduit interface 3, and the overall structure of the lower electrode tip 201 is a circular truncated cone structure.

Since the lower electrode tip 201 needs to perform a welding function, a supporting function, and a pressure applied by the upper motor assembly during welding, the lower electrode tip 201 may be made of a high-conductivity and high-hardness material. Optionally, the lower electrode head 201 may be made of copper or copper alloy.

In order to ensure that the duct joint 3 of the compressor housing 1 can be accurately fitted to the fixed position of the lower electrode head 201 during each operation, the lower electrode assembly 20 of the embodiment of the present invention positions the compressor housing 1 by providing the housing positioning pin 202. Specifically, a housing positioning pin 202 is arranged above the lower electrode head 201, and the axis is coaxial with the reference axis 9; specifically, in the embodiment of the present invention, the housing positioning pin 202 locks the housing positioning pin 202 to the lower electrode head 201 based on the bolt 203; further, the bolt 203 sequentially penetrates through the shell positioning pin 202, the lower electrode head 201 and the lower electrode head connecting plate 204 and is locked on the lower electrode holder 205, so that the shell positioning pin 202, the lower electrode head 201, the lower electrode head connecting plate 204 and the lower electrode holder 205 are fastened into a whole.

In order to prevent the housing positioning pin 202 from affecting the welding operation, the housing positioning pin 202 may be made of an insulating material such as bakelite.

In particular embodiments, the lower electrode head 201 may be powered by the lower electrode head connector plate 204, and thus, optionally, the lower electrode head connector plate 204 is made of a highly conductive material. Alternatively, the lower electrode head connector plate 204 may be made of copper or a copper alloy.

Further, in specific implementation, the lower electrode tip 201 can be powered through the lower electrode holder 205, and therefore, the lower electrode holder 205 is optionally made of a high-conductivity material. Alternatively, the lower electrode holder 205 may be made of a ferrous metal material.

In consideration of heat dissipation of the lower electrode head 201 and the lower electrode head connection plate 204 during welding operation, a cooling water path is provided in the lower electrode head connection plate 204, and a cooling water pipe 206 is connected to the cooling water path.

Alternatively, it is necessary to perform a preliminary restriction on the guide tube, considering that the guide tube 2 needs to be kept coaxial with the guide tube interface 3 during the welding operation, since the lower electrode assembly restricts the compressor housing 1 only by the housing positioning pin 202.

Fig. 6 shows a partially enlarged schematic view of a catheter pre-positioning pin structure according to an embodiment of the present invention. The lower electrode assembly 20 further includes a conduit pre-alignment pin 207, the conduit pre-alignment pin 207 being disposed above the housing alignment pin 203, and the conduit pre-alignment pin 207 being collinear with the reference axis 9. The catheter prepositioning pin 207 has an outer diameter dimension less than or equal to the inner diameter dimension of the catheter 2. Specifically, the catheter preposition pin 207 can have multiple functions according to different size designs; when the outer diameter of the guide pipe pre-positioning pin 207 is the same as the inner diameter of the guide pipe 2, the guide pipe pre-positioning pin 207 can accurately position the guide rail 2, and the guide pipe 2 and the guide pipe interface are coaxial; when the outer diameter of the guide pipe pre-positioning pin 207 is smaller than the inner diameter of the guide pipe 2, the guide pipe pre-positioning pin 207 can perform preliminary positioning on the guide pipe 2, on one hand, the guide pipe pre-positioning pin 207 is used for clamping the guide pipe 2, and the guide pipe is prevented from falling; on the other hand, the guide tube pre-positioning pin 207 performs preliminary position limitation on the guide tube 2, and the guide tube 2 is accurately positioned by the guide tube positioning pin in the subsequent operation steps.

In specific implementation, the guide tube pre-positioning pin 207 and the housing positioning pin 203 may be integrally provided or may be separately provided.

In the case where the pipe preset pin 207 and the housing positioning pin 203 are integrally provided, in order to facilitate the housing to be fixed to the housing positioning pin 203, the outer diameter of the pipe preset pin 207 should be smaller than or equal to the outer diameter of the housing positioning pin 203. Under the condition that the guide pipe pre-positioning pin 207 and the shell positioning pin 203 are arranged in a split manner, the shell can be fixed on the shell positioning pin 203, and then the guide pipe pre-positioning pin 207 is fixed on the shell positioning pin 203, so that the guide pipe can be pre-positioned or accurately positioned; thus, in this embodiment, the outer diameter of the conduit pre-alignment pin 207 is less than or equal to the inner diameter of the conduit. Specifically, the guide pipe positioning pin can be designed into a hollow moving part, the inner wall of the guide pipe positioning pin is matched with the guide pipe pre-positioning pin, and after the compressor shell is placed in place, the guide pipe positioning pin is sleeved on the guide pipe pre-positioning pin to accurately position the guide pipe.

Before welding operation, firstly fixing the compressor shell 1, and matching the conduit interface 3 of the compressor shell 1 on the shell positioning pin 203; and then the guide pipe 2 is sleeved on the guide pipe pre-positioning pin 207 to complete the accurate positioning or pre-positioning of the welding workpiece.

Fig. 7 shows the embodiment of the present invention provides a three-dimensional structure diagram of an upper electrode assembly and an upper electrode guiding assembly, and fig. 8 shows the embodiment of the present invention provides a sectional structure diagram of an upper electrode assembly and an upper electrode guiding assembly.

In the embodiment of the present invention, the upper electrode group 30 includes two upper electrodes, which are the first upper electrode 301 and the second upper electrode 302, respectively. A semi-annular first sub-electrode tip is arranged on one side, facing the reference axis, of the first upper electrode 301, and a semi-annular second sub-electrode tip is arranged on one side, facing the reference axis, of the second upper electrode 302; when the two upper electrodes move towards the reference axis to the stroke end position, namely the position shown in fig. 5, the first sub electrode tip and the second sub electrode tip are combined to form an annular upper electrode head, and the size of the upper electrode head is matched with the outer diameter of the conduit. Specifically, the inner diameter of the upper electrode head is larger than or equal to the outer diameter of the guide pipe 2 and smaller than the outer diameter of the guide pipe flange 4.

It should be noted that, since the first upper electrode 301 and the second upper electrode 302 need to perform a welding function and a certain pressure needs to be applied to the pipe flange during a welding operation, the first upper electrode 301 and the second upper electrode 302 may be made of a high hardness and high conductivity material. Alternatively, the first and second upper electrodes 301 and 302 may be made of copper or a copper alloy.

The upper electrode assembly 30 of the embodiment of the present invention further includes two connecting blocks, namely a first connecting block 311 and a second connecting block 312, wherein the bottom surface of the first connecting block 311 is fixedly connected to the top surface of the first upper electrode 301, and the bottom surface of the second connecting block is fixedly connected to the top surface of the second upper electrode; the first upper electrode 301 is driven based on the first connection block 311, and the second upper electrode 302 is driven based on the second connection block 312. When the first upper electrode 301 and the second upper electrode 302 move to the formation end, a conduit avoiding groove is formed between the opposite sidewalls of the first connecting block 311 and the second connecting block 312 for avoiding the conduit 2.

Optionally, the first connection block 311 and the second connection block 312 are made of a high conductive material.

The embodiment of the utility model provides an upper electrode group 30 still includes the linear motion guide 40 that an axis set up along the horizontal direction, first connecting block 311 and second connecting block 312 are sliding fit respectively on the linear motion guide 40. Specifically, the linear motion guide 40 may be a trapezoidal groove guide, a T-groove guide, a linear guide, or other guide components. Alternatively, the linear guide may be made of a ferrous metal material.

The first and second connection blocks 311 and 312 move toward or away from the reference axis based on the linear motion guide 501, respectively.

In a specific implementation, the two or more upper electrodes are respectively driven by a pneumatic driving element, a hydraulic driving element or a corresponding driving mechanical device, and optionally, the pneumatic driving element may be a cylinder, and the hydraulic driving element may be a hydraulic cylinder. In the embodiment of the present invention, since the upper electrode is connected to the connecting block, it is optional that the pneumatic driving element, the hydraulic driving element or the corresponding driving mechanism can drive the connecting block to move to control the driving motion of the upper electrode.

Optionally, the upper electrode assembly 30 of the embodiment of the present invention further includes a guide positioning pin 320, and an axis of the guide positioning pin 320 is coaxial with the reference axis, in the specific implementation, the arrangement manner of the guide positioning pin 320 may be various, in the embodiment of the present invention, the guide positioning pin 320 may be fixed on the bottom surface of the linear motion guide 40 based on the bolt 321, and the axis is coaxial with the reference axis; the outer diameter of the catheter alignment pin 320 is matched to the inner diameter of the catheter. In specific implementation, the conduit needs to be kept coaxial with the conduit interface during operation, and therefore, the upper electrode assembly of the embodiment of the present invention is provided with the conduit positioning pin 320; the outer diameter of the guide tube positioning pin 320 is matched with the inner diameter of the guide tube; in a specific implementation, a chamfer may be provided at the lower end of the guide tube positioning pin 320, so that the guide tube positioning pin 320 can accurately extend into the guide tube and guide the position of the guide tube under the guidance of the chamfer. The catheter positioning pin 320 first extends into the catheter to position the catheter before the upper electrode assembly forms the upper electrode head. If the lower electrode assembly is provided with a catheter pre-positioning pin, the catheter positioning pin 320 can directly extend into the catheter due to the fact that the catheter is located within a fixed position range; if the lower electrode assembly is not provided with the catheter pre-positioning pin, the operator can manually sleeve the catheter into the catheter positioning pin 320 or manually place the catheter on the catheter interface, and then operate the catheter positioning pin 320 to extend the catheter positioning pin into the catheter to position the catheter.

In order to avoid the influence of the guide pipe positioning pin 320 on the welding, the guide pipe positioning pin 320 may be made of an insulating material such as bakelite.

In view of the heat dissipation problem of the upper electrode assembly, the embodiment of the present invention provides a cooling water path on the first upper electrode connecting block 311 and/or the second upper electrode connecting block 312, and the cooling water path is connected to the cooling water pipe 206.

In addition, considering that the upper electrode assembly and the lower electrode assembly are made of metal materials and carry large current during operation, in order to prevent the large current from being transmitted to external equipment and causing damage to the external equipment and workers, the upper electrode guide assembly further comprises an insulating layer 50; the insulating layer 50 is disposed on the top surface of the linear motion guide 40.

The upper electrode guide assembly further comprises an electrode balancer 503, wherein the electrode balancer 503 is arranged on the top surface of the insulating layer, and the electrode balancer 503 is fixedly connected with the sliding rail member 501 to drive the linear motion guide member 40 to move so as to balance the welding pressure of the first upper electrode and the second upper electrode.

In one embodiment, the insulating layer 50 may be an elastic insulating layer or a hard insulating layer, such as a plastic pad or a bakelite board. Because the elastic insulating layer has certain deformation capacity and can simultaneously have the functions of the insulating layer and the electrode balancer, the electrode balancer does not need to be additionally arranged under the condition that the insulating layer 50 adopts the elastic insulating layer; alternatively, the insulating layer 50 may be a hard insulating layer, and the electrode balancer is a plurality of nitrogen springs disposed above the insulating layer 50.

In specific implementation, after the compressor shell and the guide pipe are fixed, the first upper electrode and the second upper electrode are far away from the reference axis, the upper electrode assembly is driven by the electrode balancer to integrally move downwards along the reference axis, and when the upper electrode assembly moves to a certain height, the guide pipe is positioned by the guide pipe pre-positioning pin, so that the guide pipe is coaxial with the guide pipe interface; then, based on the guiding of the linear guide, the first upper electrode and the second upper electrode move towards the direction of the reference axis to the stroke end, and an upper electrode head is formed and is enclosed outside the outer wall of the guide pipe. The size of the inner wall of the upper electrode head is larger than or equal to the outer diameter of the guide pipe, and the size of the inner wall of the upper electrode head is smaller than the outer diameter of the guide pipe flange; then the electrode assembly on the electrode balancer is integrally pressed down to the upper end face of the guide pipe flange; and finally, electrifying the first upper electrode, the second upper electrode and the lower electrode, and welding the contact surface of the conduit flange and the conduit interface to finish welding.

Optionally, the first upper electrode, the second upper electrode and the lower electrode can be connected with an external power supply based on copper strips; furthermore, the first upper electrode and the second upper electrode can be connected with an external power supply based on the first connecting block and the second connecting block respectively, and the lower motor can be connected with the external power supply based on the lower electrode tip connecting plate.

The embodiment of the utility model provides a pipe welding tool equipment, the combination of a plurality of top electrodes of the top electrode subassembly of this pipe welding tool equipment forms the top electrode head, is difficult for interfering with compressor housing or pipe before the operation, and the welding position pertinence is good during the operation, and welding current distributes evenly, and the welding is effectual; by applying pressure to the upper electrode head, relative pressure exists between the guide pipe and the compressor shell during welding, and the welding surface is good in forming quality; the shell positioning pin, the guide pipe pre-positioning pin and the guide pipe positioning pin are arranged in a matched mode, so that the shell of the compressor and the guide pipe can be effectively positioned, the coaxiality of a guide pipe flange and a guide pipe interface is guaranteed, and the welding quality is improved; due to the arrangement of the cooling water channel, the operation problems of the upper electrode assembly and the lower electrode assembly can be effectively reduced, and the service lives of the upper electrode assembly and the lower electrode assembly are prolonged; the insulating layer can effectively prevent welding current from being transmitted to external equipment, and has a good safety protection effect.

The embodiment of the present invention provides a pipe welding tool device, and the principle and the implementation of the present invention are explained by applying specific examples, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (10)

1. A pipe welding tooling device is characterized by comprising a lower electrode assembly, an upper electrode assembly and an upper electrode guide assembly, wherein a reference axis arranged along the vertical direction is arranged in a space;

the lower electrode assembly includes a lower electrode tip having an axis collinear with the reference axis;

the upper electrode assembly is arranged above the lower electrode assembly and comprises more than two upper electrodes moving along the horizontal direction; based on the upper electrode guide assembly, the two or more upper electrodes move towards or away from the reference axis, and the two or more upper electrodes move along the direction of the reference axis;

when the more than two upper electrodes respectively move towards the reference axis to the stroke end position, the side walls of the more than two upper electrodes facing one side of the reference axis enclose an upper electrode head, and the axis of the upper electrode head is collinear with the reference axis.

2. The pipe welding tooling apparatus of claim 1, wherein the lower electrode assembly further comprises a housing locating pin; the shell positioning pin is arranged above the electrode head, and the axis of the shell positioning pin is collinear with the reference axis.

3. The conduit welding tooling device of claim 2, wherein the lower electrode assembly further comprises a conduit pre-positioning pin disposed above the housing positioning pin.

4. The conduit welding tooling device of claim 2 wherein the upper electrode assembly includes a conduit alignment pin, the conduit alignment pin axis is collinear with the reference axis and the conduit alignment pin moves in the direction of the reference axis.

5. The pipe welding tooling device of claim 1, wherein the upper electrode assembly includes two upper electrodes, the two upper electrodes being a first upper electrode and a second upper electrode, respectively; one side of the first upper electrode facing the reference axis is provided with a semi-annular first sub electrode tip, and one side of the second upper electrode facing the reference axis is provided with a semi-annular second sub electrode tip;

when the two upper electrodes move towards the reference axis to the stroke end position, the first sub electrode tip and the second sub electrode tip are combined to form an annular upper electrode tip.

6. The pipe welding tooling device of claim 5, wherein the upper electrode assembly further comprises two connecting blocks, the two connecting blocks being a first connecting block and a second connecting block, respectively;

the bottom surface of the first connecting block is fixedly connected with the top surface of the first upper electrode, and the bottom surface of the second connecting block is fixedly connected with the top surface of the second upper electrode;

the first upper electrode is driven based on the first connection block, and the second upper electrode is driven based on the second connection block.

7. The pipe welding tooling device of claim 6, wherein the first connecting block and the second connecting block are respectively provided with a pipe avoiding groove on one side facing the reference axis.

8. The pipe welding tooling equipment of claim 6, wherein the upper electrode guide assembly comprises a linear motion guide with an axis arranged along the horizontal direction, and the first connecting block and the second connecting block are respectively in sliding fit with the linear motion guide;

the first and second connecting blocks move toward or away from the reference axis based on the linear motion guide, respectively.

9. The conduit welding tooling device of claim 1, further comprising an insulating layer disposed on a top surface of the upper electrode guide assembly;

or the pipe welding tool equipment further comprises an insulating layer and an electrode balancer, wherein the insulating layer is arranged on the top surface of the upper electrode guide assembly, and the electrode balancer is arranged on the top surface of the insulating layer.

10. The pipe welding tooling apparatus of claim 9, wherein the two or more upper electrodes are driven based on pneumatic or hydraulic drive elements, respectively.

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