CN107107240A

CN107107240A - Arc-welding conductor pipe jointer for GMAW craft/robots arc-welding MIG welding guns

Info

Publication number: CN107107240A
Application number: CN201580072341.2A
Authority: CN
Inventors: K·哈桑; G·雷丁
Original assignee: Victor Equipment Co
Current assignee: Victor Equipment Co
Priority date: 2014-11-13
Filing date: 2015-11-12
Publication date: 2017-08-29
Also published as: EP3218134A1; CA2969212A1; WO2016077582A1; AU2015346239A1

Abstract

A kind of arc welding equipment is disclosed, it includes limiting the conductor tube (454) of inner passage (504).Conductor tube (454) further defines outer surface profile (506) and distal portions (466).Conductor tube (454) is configured to sleeve pipe (456) of the engagement with inner surface profile (468) and outer surface profile (458).Inner surface profile (468) is configured to the outer surface profile (506) against conductor tube (454), and outer surface profile (458) includes bonding part (460).

Description

Arc-welding conductor pipe jointer for GMAW craft/robots arc-welding MIG welding guns

Technical field

The disclosure relates generally to welder, relates more specifically to such as Metallic Inert Gas (MIG) or gas metal The arc welding equipment of arc-welding (GMAW) welding gun, it includes the running stores for being used to produce welding arc and diffusing protection gas.

Background technology

The statement of this section only provides the background information related to the disclosure, and can not constitute prior art.

In the arc welding equipment of such as Metallic Inert Gas (MIG) or gas metal arc welding (GMAW) welding gun, welding wire passes through Welding gun enters to give to provide pool of molten metal metal works are bonded together.Inert gas passes through (remote) end quilt before welding gun Guide the embracing layer to provide protective gas or surround coating, so as to protect pool of molten metal from atmosphere pollution.Inert gas The typically combination of the various gases such as argon gas or helium.

MIG the or GMAW welding guns of prior art typically comprise contact end and are connected to the gas diffusion of contact end Device.Contact end has the centre bore that welding wire is directed to workpiece.Electric current is sent to welding wire by contact end.Gaseous diffuser quilt Screw thread is connected in contact end and limits gas passage to guide protective gas formation to cover around the protective gas of pool of molten metal Layer.Contact end and gaseous diffuser are easily worn and torn constantly by hyperpyrexia due to high-temperature operation.

The content of the invention

A kind of the commonly provided the having for welding conductors pipe for being used for arc welding equipment (such as MIG or GMAW welding guns) of the disclosure increases Plus the connector in life-span.The various forms of the disclosure provide simplified structure, heat distribution evenly and improved cooling with Improve the life-span.

In one form, arc welding equipment includes limiting the conductor tube of inner passage and outer surface profile.Conductor tube bag Distal portions are included, the distal portions have the distal face around inner passage.Sleeve pipe limits the master extended along longitudinal axis Body.Main body has the length along longitudinal axis between proximal part and distal portions.Main body limits inner surface profile and outer Surface profile.Inner surface profile is configured to be slidably engaged on the outer surface profile of conductor tube.The outer surface wheel of sleeve pipe Exterior feature includes bonding part.

In another form, arc welding equipment includes limiting the conductor tube of inner passage and distal portions.Conductor tube it is remote End part limits outer surface profile and the distal face around inner passage.Sleeve pipe includes limiting inner surface profile and outer surface wheel Wide main body.Main body has proximal part and distal portions.Inner surface profile is configured to be slidably engaged in the outer of conductor tube On portion's surface profile, and outer surface includes threaded portion.Sleeve pipe includes lip, distal portions radial direction of the lip from main body Extend internally.Lip formation seating face, the seating face is engaged against the distal face of conductor tube.Consumable assembly has interior master Body, the interior main body includes being configured to be attached mechanically to the Internal periphery of the threaded portion of sleeve pipe.Interior main body has distal end, and this is remote End has interior distal end flange.Contact end limit externals shoulders, the externals shoulders be configured to against interior distal end flange with Contact end is fixed to conductor tube.

In another form, the adapter sleeves for the conductor tube of arc welding equipment include main body.Main body is in close end Divide and extend a segment length along longitudinal axis between distal portions.Main body limits inner surface profile and outer surface profile.Interior table Facial contour is configured to be slidably engaged in conductor tube.Outer surface profile includes threaded portion.

From description provided herein, it is other can application field will become obvious.It should be appreciated that description and specific example It is intended merely for the purpose of explanation, it is no intended to limit the scope of the present disclosure.

Brief description of the drawings

The purpose that accompanying drawing described herein is merely to illustrate, it is no intended to limit the scope of the present disclosure in any way.

Fig. 1 is the side view of the arc welding equipment including contact end diffuser of the teaching construction according to the disclosure；

Fig. 2 is the cross-sectional perspective view of the consumable assembly constructed according to the first embodiment of the disclosure, consumable assembly It is connected to conductor tube and with contact end diffuser；

Fig. 3 is the exploded perspective of the conductor tube and consumable assembly constructed according to the first embodiment of the disclosure Figure；

Fig. 4 is the exploded section of the conductor tube and consumable assembly constructed according to the first embodiment of the disclosure Figure；

Fig. 5 is the sectional view of the contact end diffuser constructed according to the first embodiment of the disclosure；

Fig. 6 is the sectional view of the contact end diffuser of the variant form constructed according to the first embodiment of the disclosure；

Fig. 7 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Fig. 8 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Fig. 9 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Figure 10 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Figure 11 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Figure 12 is the section of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure；

Figure 13 A are the sections of the another form of contact end diffuser constructed according to the first embodiment of the disclosure Figure, Figure 13 B are the sectional views of contact end diffuser, and Figure 13 C are to represent the relation between end eye length and end internal diameter Curve；

Figure 14 is the cross-sectional perspective view of the interior main body of the nozzle constructed according to the first embodiment of the disclosure；

Figure 15 is the consumable assembly of the arc welding equipment constructed according to the first embodiment of the disclosure and cutting for conductor tube Face figure；

Figure 16 is the consumable assembly of the arc welding equipment constructed according to the second embodiment of the disclosure and cutting for conductor tube Face figure；

Figure 17 is consumable assembly and the office of conductor tube of the arc welding equipment constructed according to the 3rd embodiment of the disclosure Portion's exploded view；

Figure 18 is the consumable assembly of the arc welding equipment constructed according to the 3rd embodiment of the disclosure and cutting for conductor tube Face figure；

Figure 19 A are the sectional views of the conductor tube of the arc welding equipment constructed according to the 3rd embodiment of the disclosure；

Figure 19 B are the sectional views of the conductor tube of the arc welding equipment constructed according to the 3rd embodiment of the disclosure；

Figure 20 A are exploded type face and the sectional view of the arc welding equipment constructed according to the 3rd embodiment of the disclosure, Figure 20 B are in alignment with the detail view of equipment.

Figure 21 A are conductor tube and the office of adapter sleeves of the arc welding equipment constructed according to the 3rd embodiment of the disclosure Portion breakdown type face figure, Figure 21 B are its sectional views.

Figure 22 is the perspective of the contact end diffuser of the consumable assembly constructed according to the 4th embodiment of the disclosure Figure；

Figure 23 is the sectional view of the consumable assembly and conductor tube constructed according to the 5th embodiment of the disclosure；

Figure 24 is the sectional view of the consumable assembly and conductor tube constructed according to the 5th embodiment of the disclosure；

Figure 25 is Figure 24 enlarged drawing, shows the interface between contact end diffuser and conductor tube；

Figure 26 is the perspective view of the consumable assembly and conductor tube constructed according to the 6th embodiment of the disclosure；

Figure 27 is cutting for the exploded of the consumable assembly and conductor tube constructed according to the 6th embodiment of the disclosure Face perspective view；

Figure 28 A are the exploded perspectives of the consumable assembly and conductor tube constructed according to the 7th embodiment of the disclosure Figure, Figure 28 B are its partial exploded cross sections；

Figure 29 is the exploded perspective of the consumable assembly and conductor tube constructed according to the 7th embodiment of the disclosure Figure；

Figure 30 is the sectional view of the consumable assembly and conductor tube constructed according to the 7th embodiment of the disclosure；

Figure 31 A are the detail views of the conductor tube and sleeve pipe constructed according to the 7th embodiment of the disclosure, and Figure 31 B are and this Disclosed 7th embodiment it is related show the conductor tube of replacement and the conductor tube of sleeve pipe and the detail view of sleeve pipe；

Figure 32 be construction consumable assembly and conductor tube perspective view and partial, exploded perspective view, it illustrates with this public affairs The conductor tube and sleeve pipe of the replacement for the 7th embodiment correlation opened；

Figure 33 A are the detail views of the aligning equipment constructed according to the 7th embodiment of the disclosure, and Figure 33 B and Figure 33 C are The detail view of the aligning equipment that shows replacement conductor construction related to the 7th embodiment of the disclosure；

Figure 34 is the partial section of the conductor tube assembly constructed according to the 8th embodiment of the disclosure；

Figure 35 is had an X-rayed according to the consumable assembly of the 8th embodiment of the disclosure and the exploded of conductor tube assembly Figure；

Figure 36 is the section of the consumable assembly being fixed in conductor tube assembly of the 8th embodiment according to the disclosure Figure；

Figure 37 is the perspective view of the sleeve pipe of the conductor assembly of the 8th embodiment according to the disclosure；

Figure 38 is the dorsal view of Figure 36 sleeve pipe；

Figure 39 is the sectional view of Figure 36 sleeve pipe；

Figure 40 is the partial exploded cross section of the conductor tube assembly of the 8th embodiment according to the disclosure；

Figure 41 is the partial section of the conductor tube assembly of the 8th embodiment according to the disclosure；And

Figure 42 is the partial section of the conductor tube assembly of the 8th embodiment according to the disclosure.

Embodiment

It is described below what is be merely exemplary in nature, and is in no way intended to limit the disclosure or its application or purposes. It should be appreciated that in whole description and accompanying drawing, corresponding reference represents similar or corresponding part and feature.Although whole Term " MIG " or " GMAW " are used in individual specification, it will be appreciated that the teachings of the present invention is applied to any kind of welding gun.

With reference to Fig. 1, the arc welding equipment of such as MIG or GMAW welding guns is shown, its entirety by reference number 10 is represented. MIG welding guns 10 include handle 12, are attached to the conductor tube 14 of handle 12 and are attached to the consumable assembly 16 of conductor tube 14.Handle 12 are connected to welding cable 18, and welding cable 18 is taken from power supply (not shown), gas source (not shown) and wire feeder (not shown) Carry welding current, protective gas and welding wire 20 and arrive welding gun 10.

According to the first embodiment of the disclosure, consumable assembly 16 includes multiple consumable components, and generally includes Contact end diffuser 24 inside nozzle 22 and the nozzle 22 being arranged on.United States Patent (USP) No.5,491,321 and 5,338,917 In have been disclosed for arc welding equipment structurally and operationally, these patents are co-owned by present assignee, and by its whole Content is incorporated by reference in its entirety herein.

Referring to Fig. 2 to Fig. 4, consumable assembly 16 is connected to the distal portions 26 of conductor tube 14.Nozzle 22 is substantially justified Cylindricality, and the distal portions 26 of conductor tube 14 are received wherein.Contact end diffuser 24 is placed coaxially on nozzle 22 Inside, and with the part being inserted into the distal portions 26 of conductor tube 14.Conductor tube 14 includes limiting inner passage 30 Cylindrical conductor main body 28 and the conduit bushing 32 being arranged in inner passage 30.Conduit bushing 32 have be used for by welding wire 20 from Welding cable 18 and handle 12 are directed to the guiding channel 34 of contact end diffuser 24.

Nozzle 22 includes outer main body 90, insulator 92 and interior main body 94, and they are formed integrally as single integrated unit.Absolutely Edge body 92 is set between outer main body 90 and interior main body 94 for making interior main body 94 be insulated with outer main body 90.Nozzle 22 is arranged on One end diffuser 24 around and fixed to conductor tube 14 distal portions 26.In the distal portions 26 of conductor tube 14 are limited Portion's conical surface 66, externals shoulders 80 and the outer contacting surface 82 close to externals shoulders.

Contact end diffuser 24 has the structure of one, and as transmitting the contact end of electric current and for expanding Both gaseous diffusers for dissipating protective gas.Contact end diffuser 24 includes limiting the hollow cylindrical body of inner chamber 38 36 and the outlet opening 40 that leads to inner chamber 38 and be aligned with inner chamber.Inner chamber 38 and the co-extensive contact end of outlet opening 40 are expanded Dissipate the whole length of device 24.The inner chamber 38 of contact end diffuser 24 is aligned with the inner passage 30 of conductor tube 14 so that led The conduit bushing 32 of body pipe 14 may extend into the inner chamber 38 of contact end diffuser 24.In one example, contact end The cylinder-shaped body 36 of diffuser 24 is made up of such as Cl8200, C181500 or C12200DHP copper alloy, and can lead to Over mechanical processing or other large volume manufacturing process (combination of such as cold forming, extruding or both) manufacture.

As clearly shown in Figure 5, contact end diffuser 24 includes the cylinder for limiting the proximal part 44 close to conductor tube 14 Shape main body 36 and the distal portions 46 close to workpiece.Proximally part 44 extends to distal portions 46 and substantially to inner chamber 38 It is cylindrical.Cylinder-shaped body 36 also includes outer wall 50, is arranged on outer shoulder 52 at proximal part 44 and is arranged on cylinder Interior shoulder 53 near the distal portions 46 of shape main body 36.Interior shoulder 53 is also disposed at the distal end 47 of inner chamber 38 and is conductor The conduit bushing 32 of pipe 14 provides retainer.

The outer wall 50 that multiple holes 54 extend through cylinder-shaped body 36 enters inner chamber 38 and positioned at the He of proximal part 44 Between distal portions 46.In the present embodiment, four holes 54 (only showing three) by the outer wall 50 of cylinder-shaped body 36 just Hand over ground (for example, vertically) extension and be spaced apart with 90 °.It should be appreciated that without departing from the scope of the disclosure, passing through The outer wall 50 of contact end diffuser 24 can form any amount of hole.During operation, protective gas is from conductor tube 14 Inner passage 30 is directed into the inner chamber 38 of contact end diffuser 24.Then, protective gas is drawn by multiple holes 54 The outside of contact end diffuser 24 is led, to be formed around contact end diffuser 24 and in the He of contact end diffuser 24 Protective gas coating between nozzle 22.Protective gas coating protects pool of molten metal during running.

By protective gas is directed to inside contact end diffuser 24 contact end diffuser 24 outside and Protective gas is set directly to be contacted with contact end diffuser, contact end diffuser 24 can be more effectively carried out with protected gas Cooling.Heat transfer of the heat from contact end diffuser 24 to protective gas can be realized by heat conduction and convection current, different from existing There are the heat radiation or convection current of the arc welding equipment (wherein protective gas is without flow through contact end) of technology.In addition, according to the disclosure, protecting Both shield gas provide cooling in the inside and outside of contact end diffuser 24, and therefore can be more quickly from contact End diffuser 24 removes heat.

Outlet opening 40 extends through the distal portions 46 of cylinder-shaped body 36 and with length L1, and the length is about Four times of the opening size (such as diameter D1) of oral pore 40.In the present embodiment, outlet opening 40 is along along cylinder-shaped body 36 Heart line C is placed in the middle.Outlet opening 40 defines fillet entrance 60.When welding wire 20 is moved through outlet opening 40, fillet entrance 60 is reduced The scraping and scraping of welding wire 20.The length L1 of outlet opening 40 is smaller than the length of the outlet opening in the contact end of prior art, with The controlled exposure between welding wire 20 and contact end diffuser 24 is provided, so as to improve arc stability and reduce outlet opening obstruction Possibility.In addition, the smaller length of outlet opening 40 reduces the friction surface between welding wire 20 and contact end diffuser 24.

Outer contact surface 64 is arranged on around the proximal part 44 of cylinder-shaped body 36 and limits a tapered portion, described Tapered portion is configured to the corresponding interior tapered surface 66 (as shown in Figure 2 and Figure 4) against conductor tube 14, and this will be carried out below More detailed description.Proximally the distal end portion 46 of part 44 is outwards tapered for outer contact surface 64.

Fig. 6 to Figure 13 is related to the various embodiments of the contact end diffuser of the contact end diffuser similar to Fig. 3. With reference to Fig. 6 and Fig. 7, in addition to the orientation in hole, the contact end of another form of contact end diffuser 68 and Fig. 3 spreads Device is identical.In the example of fig. 6, contact end diffuser 68 limits multiple holes 70, and the multiple hole is extended through at a certain angle Cross the outer wall 50 of cylinder-shaped body 36.In the example in figure 7, contact end diffuser 69 has multiple holes 71, and each hole has There are entrance 73, axial passage 75 and outlet 77.Longitudinal direction of the axial passage 75 along contact end diffuser 69 extends and incited somebody to action The entrance 73 for leading to inner chamber 38 is connected to the outlet 77 to be formed on the exterior section 79 of outer wall 50.

Reference picture 8, in addition to the construction of outlet opening, contact of the another form of contact end diffuser 72 with Fig. 3 End diffuser is identical.Contact end diffuser 72 limits outlet opening 74, and the center line C of the outlet opening from cylinder-shaped body 36 is inclined Move.Outlet opening 74 generally defines waveform to form multiple contact points 76.Waveform is probably significant sine curve or gone out along court The length of the passage of oral pore extension has the wavelength increasedd or decreased.When welding wire 20 is moved through outlet opening 74, welding wire 20 connects Multiple contact points 76 are touched, this improves the contact between welding wire 20 and contact end diffuser 24, expanded so as to provide from contact end Device 24 is dissipated to the electric current transmission of the stabilization of welding wire 20.

With reference to Fig. 9 to Figure 12, in addition to multiple slit 84e to 84h that multiple holes 54 are defined various forms and orientation, Contact end diffuser 84a to 84d other modifications are identical with Fig. 3 modification.As it is used herein, term " slit " should be by Be construed to mean to define shape in the form of a substantially rectangular, length be more than or equal to the geometry of width.

In the example of figure 9, contact end diffuser 84a limits multiple slit 84e, and the slit has length and width Degree, the length is longer than the width of the axis of symmetry across slit 84e.Multiple slits are further limited with main perpendicular to cylinder Each slit 84e of the longitudinal axis 84i of body 36 angle extension length.Multiple slit 84e can be defined as in shape Multiple polygonal-shaped openings 84j of square are evident as, it promotes the flowing and covering of more consistent protective gas.In showing for Figure 10 In example, contact end diffuser 84b has multiple slit 84f, and the length of each slit extends parallel to longitudinal axis 84i.Often Individual slit can have the profile 84k of the obvious round shape near two ends.In addition, in this example, slit is main relative to cylinder The outer wall 50 of body 36 is formed with an angle so that protective gas is rotatably guided in nozzle 22.Relative to the angle of outer wall 50 Degree is shown as the sharp edge axially extended；However, sharp edge can be with Longitudinal extending or between longitudinal axis and longitudinal axis Centre position extension.

Referring now to Figure 11, showing the contact end diffuser 84c with multiple slit 84g, each slit has flat Row is in the longitudinal axis 84i length extended and each slit is shown as the inner channel walls 841 with round shape.Each slit Inner channel walls 841 can also include chamfering, fillet or their other modifications and combination, so as to optimize the stream of protective gas It is dynamic.In fig. 12, contact end diffuser 84d another example has multiple slit 84h, and each slit is relative to longitudinal axis 84i extends at a certain angle.

In Figure 13 A example, contact end diffuser 86a limits multiple slit 86b and extends through cylinder-shaped body Multiple hole 86c of 36 outer wall 50.In this example, multiple slit 86b relative to longitudinal axis 84i diametrically equably between Separate and shape slit 86d in a row.In addition, multiple hole 86c are diametrically evenly spaced apart around longitudinal axis and form one Round 86e.Each hole 86d and each slit 86c replaces also around the outer wall 50 of cylinder-shaped body 36.Contact end diffuser The example also show the different implementations in the multiple holes 54 introduced in all previous figures.

The sectional view of contact end diffuser is shown with reference to Figure 13 B and Figure 13 C, Figure 13 B, Figure 13 C show that expression connects Touch the curve of the relation between end diffuser 84a eye length 88a and end internal diameter (I.D.) 88b.Eye length 88a tables Show the length that the contact end diffuser 84a welding wire with extending to fillet entrance 60 from distal portions 46 is contacted.End internal diameter 88b represents the diameter of cylindrical exit hole 40.Curve 88c shows what is contemplated for contact end diffuser 84a and the disclosure Ratio between the eye length 88a and end internal diameter 88b of the outlet opening 40 of other contact end diffusers.

Curve 88c shows that, for less welding wire and end internal diameter 88b, eye length can be higher than 88d.For example, When end internal diameter 88b is 7/64 inch, eye length ratio exists Between, but when end internal diameter 88b is 0.045 inch When, eye length exists than 88dBetween.Typically for contact end of the end internal diameter between 1/8 inch and 0.035 inch End, eye length can be correspondingly between 2 and 9 than 88d.Figure 13 C are shown for realizing disclosed contact end diffusion The guide of device, and it is not considered as the limitation to disclosure scope.Curve 88c shows eye length than 88d with connecing Touch the end internal diameter 88b of end diffuser reduction and increase.

The implementation of shown contact end is only exemplary, and is not construed as limitation of this disclosure.Other show Example can include multiple rows, and each row includes multiple slits, multiple holes or its any combinations, in addition to multiple gases from chamber 38 Exit passageway.Gas outlet channels can be relative to each other and around main body each exit passageway each positional symmetry or non- It is asymmetrically formed.Gas outlet channels can be formed with any pattern extended around the circumference of main body, and can also be included Relative to longitudinal axis 84i around the angled multiple rows radially extended of main body.

In another implementation, a round and row's slit can with overlapping, or multiple slits can include it is respective Relative to longitudinal axis with each slit of different angle Longitudinal extendings.Finally, Gas outlet channels can include different shape, Including but not limited to there is the ellipse and polygon at various chamferings or round edge or edge.Previous each example is all shown The implementation of Gas outlet channels, wherein, protective gas is directed in nozzle 22 by the Gas outlet channels, and offer changes The cooling of the contact end diffuser 24 entered, while keeping protective gas covering to improve connecing according to the implementation of the disclosure Touch the life-span of end.

With reference to Figure 14, the interior main body 94 of nozzle 22 is configured for use as tip holder and consolidates the end diffuser 24 of one It is scheduled on wherein.Interior main body 94 includes the hollow body 96 of substantial cylindrical and including near-end 100 and distal end 102.Interior main body 94 exists Interior distal end flange 96 is limited at distal portions 102 and intermediate flange is limited between proximal part 100 and distal portions 102 104.Interior distal end flange 96 limits the circumferential angled surfaces 106 of the externals shoulders 52 for contacting contact end diffuser 24. Intermediate flange 104 limits inner circumferential contact surface 108.The externals shoulders of the abutting contact end diffuser 24 of interior distal end flange 96 52 with fixed and positioning one end diffuser 24.

With reference to Figure 15, when in conductor tube 14 and the insertion nozzle 22 of contact end diffuser 24, the inner circumferential of interior main body 94 The outer contacting surface 82 that surface 108 contacts conductor tube 14 is contacted, and the externals shoulders 80 of conductor tube 14 engage interior main body 94 Intermediate flange 104.The outer shoulder of the contact contact end of inclined surface 106 diffuser 24 of the interior distal end flange 96 of interior main body 94 52, and prevent contact end diffuser 24 to be distally moved as indicated by arrow X.Pass through the interior tapered surface 66 of conductor tube 14 Prevent contact end diffuser 24 from being moved as indicated by arrow Y to nearside.The outer contact surface 64 of contact end diffuser 24 It is configured to the interior tapered surface 66 of match conductors pipe 14 so that when the proximal part 44 of contact end diffuser 24 is fixed to During the distal portions 26 of conductor tube 14, the outer contact surface 64 of contact end diffuser 24 and the interior tapered table of conductor tube 14 Face 66 is in close contact.

There is provided between the outer contact surface 64 of end diffuser 24 and the interior tapered surface 66 of conductor tube 14 enough Physical contact so that electric current reliably can be sent to contact end diffuser 24 from conductor tube 14, and heat can be from Contact end diffuser 24 is efficiently transferred to conductor tube 14.In addition to being cooled down by protective gas, due to contact end diffusion Increased contact area between device 24 and conductor tube 14, contact end diffuser 24 can be further cooled by.Increased contact Area allows from contact end diffuser 24 to the effective heat transfer of conductor tube 14, the contact end in this welding gun with prior art Thread contact surface between end and diffuser is opposite.

Fig. 3 and Fig. 4 are returned to, in order to assemble MIG welding guns, outer main body 90, insulator 92 and interior main body 94 are pre-assembled To form the nozzle 22 of one, and the near-end of contact end diffuser 24 from nozzle 22 is inserted into nozzle 22 until contact end The externals shoulders 52 of end diffuser 24 contact the inclined surface 106 of the interior distal end flange 96 of interior main body 94.Interior distal end flange 96 prevent contact end diffuser 24 to be further distally moved.

Next, the distal portions 26 of conductor tube 14 are inserted into the near-end of nozzle 22 until the distal portions of conductor tube 14 26 are inserted into the sky between the external contact face 64 of contact end diffuser 24 and the inner circumferential contact surface 108 of interior main body 94 Between.Conductor tube 14 is connected to the consumable assembly 16 including nozzle 22 and contact end diffuser 24 by the instrument of not needing.Gu Fixed connection need not be threadedly coupled.Contact end diffuser 24, nozzle 22 and conductor tube 14 can be by simply by these portions Part is pressed toward each other to assemble.It therefore, it can reduce manufacturing cost.

Although not shown in the drawings, as shown in other embodiments, conductor tube 14 can be connected by screw thread Connect the interior main body 94 fixed to nozzle 22.

With reference to Figure 15, in operation, protective gas is directed from the inner passage 30 of conductor tube 14 and enters contact end The inner chamber 38 of diffuser 24.Then protective gas is directed to the outside of contact end diffuser 24 by multiple holes 54.Hole 54 spread protective gas and provide cooling to the end diffuser 24 of one.

Welding wire 20 is directed into contact end diffuser from conductor tube 14 by the inner chamber 38 of contact end diffuser 24 24 outlet opening 40.Electric current is sent to welding wire 20 from conductor tube 14 by contact end diffuser 24.The fillet of outlet opening 40 enters Mouth 60 reduces the scraping and scraping of welding wire.Outlet opening 40 is that welding wire 20 provides contact.It is arranged on contact end diffuser 24 weeks The protection contact end of nozzle 22 diffuser 22 enclosed is from contact ground connection workpiece, and it is molten that protective gas also is directed into welding Pond.

Contact end diffuser 24 with integrative-structure is due to the increasing between contact end diffuser 24 and conductor tube 14 Plus contact surface and due to that can be sufficiently cool from contact end diffuser 24 to the heat transfer of protective gas.This Outside, protective gas all provides cooling in the inside and outside of contact end diffuser 24.By enough coolings, contact end expands Dissipating device 24 can be formed by the hollow structure using less copper alloy, to reduce manufacturing cost and can be used for heavy duty application (for example, high-amperage operation).

In addition, the contact end diffuser 24 with hollow integrative-structure is relatively easily produced.Contact end diffuser 24 can be formed by forming technology, including but not limited to forging, die forging, cold forming, extruding, metal injection molded (MIM), casting Make and be machined.As for transmitting the contact end of electric current and one for both diffusers of diffusing protection gas Contact end diffuser 24 reduce total manufacturing cost for the separate part of gaseous diffuser by eliminating.

With reference to Figure 16, show and consume group according to what the second embodiment of the disclosure was configured to arc welding equipment 10 Part 120 and conductor tube 126.Consumable assembly 120 includes contact end 122 and nozzle 124.Contact end in the present embodiment 120 have the structure of the contact end diffuser 24 similar to Figure 15, are connect except Figure 16 contact end 120 is not extended through The outer wall 50 of end 120 is touched with any hole of diffusion gas.Alternatively, being formed in conductor tube 126 for diffusing protection gas The hole of body.

Similarly, contact end 120 includes inner chamber 38 and outlet opening 40.Fillet entrance 60 forms the remote of internally chamber 38 Hold at 47.Inner chamber 38 is aligned to receive conduit bushing 32 (as shown in Figure 2) with the inner passage 128 of conductor tube 126.Contact end End 120 structure be similar to Figure 15 contact end diffuser 24 structure, and its be described below in be considered as class As to avoid repeating.

Conductor tube 126 includes distal portions 130, and there is the distal portions outside for being used to contact contact end 122 to connect Touch the interior tapered surface 132 on surface 134.Interior tapered surface 132 and outer contact surface 134 enhance the He of conductor tube 126 Electric current transmission and heat transfer between contact end 122.Connection between contact end 122, conductor tube 128 and nozzle 124 with Connection between Figure 15 contact end diffuser 24, conductor tube 14 and nozzle 12 is similar, therefore it is described in detailed below It is considered as similar to avoid repeating.

The distal portions 130 of conductor tube 126 define the multiple holes for the cylindrical wall 138 for extending through distal portions 130 136.Although the multiple hole 136 is shown as the orientation in the radial direction in conductor tube 126, each hole 136 can be relative It is angularly oriented in the longitudinal axis of conductor tube 126 or the part with the longitudinal axis parallel to conductor tube 126.It is described many Individual hole 136 and the inner passage 128 of conductor tube 126 are in fluid communication.The multiple hole 136 is set near with contact end 122 Hold part 44 close.

By forming hole 136 in conductor tube 126, contact end 122, nozzle 124 and conductor tube 126 are applied to light load Using (about 250A and lower).When protective gas from gas source is directed into conductor tube by welding cable 18 (shown in Fig. 1) During 126 distal portions 130, protective gas can further be guided to the outside of conductor tube 126 and enter nozzle 124 and conductor The first air chamber 140 between the distal portions 130 of pipe 126.Between first air chamber 140 and contact end 122 and nozzle 124 Two air chambers 142 are in fluid communication.Protective gas can be by forming the passage in the interior distal end flange 96 of nozzle 124 (not Show) or be further distad directed into by the gap (not shown) between interior distal end flange 96 and contact end 122 Second air chamber 142.Therefore, protective gas coating is formed around contact end 122 to protect pool of molten metal.

Multiple holes 136 can be formed near the interface between conductor tube 126 and contact end 122.Therefore, hole is flowed through 136 protective gas can be to provide enough coolings to the contact end 122 for being subjected to hyperpyrexia during operation.

Similar to the contact end diffuser 24 of the first embodiment, contact end 122 is affixed directly to conductor tube 126 Distal portions 130 are without any intervention package.In addition to gas and electric current are sent into contact end 122, conductor tube 126 Diffusing protection gas is additionally operable to form the protective gas coating around contact end 122.Single gaseous diffuser is not needed. Therefore, according to the arc welding equipment 10 for including consumable assembly 120 and conductor tube 126 of the teaching construction of the disclosure with less Component, so as to reduce manufacturing cost.

Although not shown in the accompanying drawings, but it is to be understood that can be in both conductor tube 126 and contact end 122 all Form hole so that both conductor tube 126 and contact end 122 can diffusing protection gases.When in conductor tube 126 and contact end When all forming hole in both ends 122, consumable assembly and conductor tube are applied to heavy duty application.

With reference to Figure 17 and Figure 18, show and used according to what the 3rd embodiment of the disclosure was constructed in arc welding equipment 10 Consumable assembly 202 and conductor tube 204.Consumable assembly 202 includes contact end 206 and the spray around contact end 206 Mouth 207.In the second embodiment shown in Figure 16, the hole 130 for guiding protective gas is formed in conductor tube 204.

As clearly shown in Figure 18, contact end 206 is cutting back end and has the distal portion for limiting elongated outlet opening 216 Divide 214 and limit the proximal part 218 of inner chamber 220.The length of elongated outlet opening 216 close to inner chamber 220 length, this with First embodiment is different with contact end with the contact end diffuser in the second embodiment, in the first embodiment and In two embodiments, elongated outlet opening is than inner chamber much shorter.Contact end diffuser 24 similar to the first embodiment, 68th, the contact end 122 of the 69,72 and second embodiment, the contact end 206 of the present embodiment has the He of externals shoulders 240 Tapered contact surface 219 at proximal part 218.

Nozzle 207 includes interior main body 208, the outer main body 210 around interior main body 208 and the insulator 212 being disposed there between. The interior main body 208 of nozzle 207 includes the proximal part 222 expanded and narrowed distal portions 214.Insulator 212 is set outside Between the proximal part 222 of the expansion of main body 210 and interior main body 208.Narrowed distal portions 214 include being used for Bonding contact end The interior distal end flange 244 of the externals shoulders 240 at end 206 and multiple holes 226 for diffusing protection gas.Although in Figure 17 and Two holes 226 are shown in Figure 18, but the hole 226 of any quantity (including one) can be formed in interior main body 224.Air chamber 228 are limited between the narrowed distal portions 214 of interior main body 208 and outer main body 210 and are flowed with the hole 226 of interior main body 208 Body is connected.

Conductor tube 204 includes distal portions 230 and is arranged on the bonding part 232 of the nearside of distal portions 230.Distal portion 230 are divided to limit the multiple holes 234 being in fluid communication with the hole 226 of interior main body 208.Distal portions 230 are further defined for contact The interior tapered surface 235 of the external conical surface 219 of end 206.Bonding part 232 can include being used for conductor tube 204 It is fixed on multiple cam lock connection members 236 in nozzle 202.For example, three cam lock connection members 236 can be along The circumference of bonding part 232 is with 120 ° of interval setting.Circumference of each cam lock connection member 236 along conductor tube 204 It is respectively provided with relative end 250,252.The first thickness that one end 250 has is more than the second thickness of another end 252 Degree so that conical surface 254 is formed between relative end 250,252.Cam lock connection member 236 allows conductor tube 204 are fixed in nozzle 207 in sliding manner.

Although not shown in the accompanying drawings, but it is to be understood that bonding part 232 can be provided with screw thread, the screw thread is used It is threadedly coupled in threaded connection of the interior main body 208 of nozzle 207 as shown in other embodiment.

When in the insertion nozzle 207 of conductor tube 204, cam lock connection member 236 engages the near of the expansion of interior main body 208 Hold the inner surface 238 of part 222.In addition, the inner surface of the narrowed distal portions 224 of the engagement of distal portions 230 of conductor tube 204 240.When conductor tube 204 positions in place, the hole 230 of conductor tube and the hole 226 of interior main body 208 are radially aligned, and male-tapered Surface 219 contacts surface 235 with the interior tapered of conductor tube 204 and is in close contact.Interior tapered contacts surface 219 and outside taper Contact surface 235 adds the heat transfer from contact end 206 to conductor tube 204, so as to be provided more effectively for contact end 206 Cooling.By forming hole in conductor tube 204, consumable assembly 202 and conductor tube 204 are applied to light load application.

With reference to the conductor tube 204 shown in Figure 19 A and Figure 19 B, Figure 17 and Figure 18 with real still according to the 3rd with the disclosure The different modifications for applying scheme are shown.Figure 19 A show the example of the modification of conductor tube 260.In the modification, multiple holes 234 are formed For multiple slits 262.In another example, Figure 19 B show the conductor tube with multiple slits 266 and multiple holes 268 264.Similar to contact end diffuser, the conductor tube 260 and 264 shown in Figure 19 A and Figure 19 B, which can have, is similar to Fig. 9 extremely Other modifications shown in Figure 13 are to change covering that is scattered and improving protective gas.

Figure 20 A and Figure 20 B are referring back to the consumable assembly 202 and conductor constructed according to the 3rd embodiment of the disclosure Pipe 204, and also disclose aligning equipment 270.Aligning equipment, which is used as guiding piece, to be used to make to be similar to what Fig. 2 was introduced into Fig. 4 The conduit bushing (not shown) of conduit bushing 32 is placed in the middle in the inner passage 128 inside conductor tube 204 and along longitudinal axis Line 272.Therefore the positioning conduit bushing of aligning equipment 270 simultaneously positions welding wire so that extend to the inner chamber 220 of contact end 206 In part be aligned along longitudinal axis 272 with elongated outlet opening 216.

Aligning equipment 270 is added into the 3rd embodiment causes conduit bushing to extend to inner chamber from inner passage 274 In 220.Inner passage defines the interior tapered surface 276 being centrally arranged in aligning equipment 270.Aligning equipment 270 makes Welding wire feeding is by conduit bushing so as to as one man enter fillet entrance 60 and pass through the outwards feeding of outlet opening 216.Aligning equipment Welding wire feeding is improved to the operation of arc welding equipment 10 by inconsistency during contact end 206 by reducing.

Aligning equipment 270 also includes press-fit surface 278, and the press-fit surface is pressed into press-fit chamber 280 leads In the distal portions 130 of body pipe 204.Press-fit surface 274 is shown as with the chamfering 282 set around near-end 284, so as to It is easily fabricated when in being pressed into the distal portions 130 of conductor tube 204 and against press-fit chamber 276.

With reference to the interior main body 204 shown in Figure 21 A and Figure 21 B, Figure 17 and Figure 18 with the 3rd embodiment with the disclosure Similar different modifications are shown.Adapter sleeves 286 with the inner chamber 288 for limiting cam lock part 290 are attached to the The conductor tube 204 of three embodiments.Adapter sleeves 206 also include multiple holes that inner chamber 288 is extended to from outer surface 294 292 and around outer surface set multiple screw threads 296, the multiple screw thread be used for be attached to similar to institute in the 3rd embodiment The nozzle (not shown) component of disclosed nozzle 207.In this example, the interior main body 208 of nozzle 207 is attached to multiple screw threads 296 and including interior distal end flange (not shown) with according to the teaching of the disclosure fix contact end 206.

With reference to Figure 22, show according to the 4th embodiment of the disclosure be configured to Fig. 1 arc welding equipment 10 can Consumable components 302 and conductor tube 304.Consumable assembly 302 includes nozzle 306 and contact end diffuser 308.Conduit bushing 310 extend longitudinally through conductor tube 304.Contact end diffuser 308 includes being used for protective gas from contact end diffuser Hole 312 outside 308 diffusion insides to contact end diffuser 308, therefore it is gentle to be used as contact end in the present embodiment Both body diffusers.Contact end diffuser 308 is structurally similar to Fig. 5 contact end diffuser 24, except contact The proximal part 314 of end diffuser 308 includes spherical contact surface 316.Similar reference by for similar part, Therefore these parts can be worked in the mode similar to being previously described in the application.

As clearly shown in Figure 23, contact end diffuser 308 includes the proximal part 314 for limiting inner chamber 38 and limited to grow The distal portions 46 of shape outlet opening 40.Proximal part 314 includes externals shoulders 52 and spherical contact surface 316.Similarly, contact End diffuser 308 has multiple holes 54, and the hole extends diametrically through proximal part 314 with diffusing protection gas.Therefore, may be used Consumable components 302 are applied to heavy duty (for example, high ampere) welding operation.

Nozzle 306 has the structure similar with the nozzle in Figure 15.Similar reference is used for similar part, therefore It should hereinafter be described to be considered as with description similar to avoid repeating.

The conductor tube 304 of the present embodiment is structurally similar to Figure 15 conductor tube, except conductor tube 304 limits correspondence In the spherical contact surface 324 of the spherical contact surface 316 of contact end diffuser 308.Contact end diffuser 308 and conductor The spherical contact surface 316 and 324 of pipe 304 improves the engagement between end/diffuser 308 and conductor tube 304.

With reference to Figure 23 to Figure 25, the arc welding equipment that Fig. 1 is configured to according to the 5th embodiment of the disclosure is shown 10 consumable assembly 402 and conductor tube 404.Consumable assembly 402 includes contact end diffuser 404 and nozzle 406.Contact End diffuser 404 is similar to Figure 15 to Figure 16 contact end diffuser 308, except contact end diffuser 308 has shape Into the annular groove 408 in spherical contact surface 316.Similar reference is used for similar part, therefore these parts It can be worked in the mode similar to being previously described in the application.

Similarly, the contact end diffuser 308 of the disclosure has proximal part 314 and distal portions 46.Proximal part 314 have externals shoulders 52 and spherical contact surface 316.Along the cyclic connected in star 418 of the circumferential of spherical contact surface 316.

As shown in figure 25, when contact end diffuser 308 and conductor tube 404 are fixed in nozzle 406, contact end expands The spherical contact surface 316 and the spherical contact surface 324 of conductor tube 404 for dissipating device 404 are in close contact.Annular groove 408 is prevented Contact end diffuser 404 is set to be locked to conductor tube 404 due to the thermal expansion of spherical contact surface 316 and 324.

With reference to Figure 26 and Figure 27, the arc welding equipment that Fig. 1 is configured to according to the 6th embodiment of the disclosure is shown 10 consumable assembly 402 and conductor tube 404.Consumable assembly 402 includes contact end 406 and nozzle assembly 408.Contact end End 406 is similar to the contact end 122 in Figure 16 and including outer contact surface 407, and the outer contact surface is proximally Part distal end portion is outwards tapered.

Nozzle assembly 408 includes nozzle body 410 and the nozzle cups 412 installed around the distal end 413 of nozzle body 410. Nozzle cups 412 can be connected through a screw thread or quickly disconnect and other types of assemble nozzle body 410.Nozzle housing Body 410 includes outer main body 414, interior main body 416 and sets the insulator 418 between outer main body 414 and interior main body 416.Interior master Body 414 is used as the tip holder for being used to fix contact end 122.

Conductor tube 404 includes the distal portions 420 with inner contact surfaces 422 and outer connecting surface 423.Distal portion Divide 420 can independently form and be molded into the main body of conductor tube 404.Alternatively, distal portions 420 can be conductor tube 404 integral part.Inner contact surfaces 422 are tapers, to match the outer contact surface 407 of contact end 406.It is outside Connection surface 423 can have the screw thread for being used for being threadedly coupled with the interior main body 416 of nozzle assembly 408.Multiple holes 424 are extended through Cross inner contact surfaces 422.When 404 Bonding contact end 406 of conductor tube, the interior tapered contact surface 422 of conductor tube 404 It is in close contact with outside tapered contact surface 407.Improved contact between conductor tube 404 and contact end 406 enhance from Contact end 406 arrives the heat transfer of conductor tube 404.

Figure 28 to Figure 30 is related to the arc welding equipment 10 for being configured to Fig. 1 according to the 7th embodiment of the disclosure and disappeared Consume component 450 and conductor tube 452.With reference to Figure 28 A- Figure 28 B, consumable assembly 450 is similar to consuming for the first embodiment Component 16, and therefore these parts can be worked in the mode similar to previously described herein.Nozzle assembly 452 leads to Cross the intermediate connector of the form of sleeve pipe 456 and the bonding part 458 including multiple screw threads 460 is attached to conductor tube 454.This reality Existing mode, which is comprised additionally in, to be arranged in conductor tube 454 conduit bushing to be set with the alignment that contact diffusion device end 464 is aligned Standby 462.This embodiment provides for disposable assembly 450 to be connected to the alternative of conductor tube 454, it is additional that it has Benefit is replaceable sleeve pipe 456, so as to allow to change multiple screw threads 460 in the case where being changed without conductor tube 454.

The distal end 466 of the bonded conductor pipe 454 of sleeve pipe 456.The inner surface profile 468 of sleeve pipe 456 is configured in conductor tube 454 Outer surface profile 470 on slide.Sleeve pipe 456 is further kept just by the locking ring 472 being arranged in annular groove 474 Position.The bonding part 458 of sleeve pipe 456 include multiple screw threads 460, it is described be threadedly coupled to nozzle assembly 452 also include it is multiple The interior main part 476 of screw thread 478.

Referring still to Figure 28 A- Figure 28 B, aligning equipment 462 is used to make to be similar to the conduit bushing 310 introduced in fig. 20 Conduit bushing (not shown) along placed in the middle in inner passage 480 of the longitudinal axis 482 inside conductor tube 454.Aligning equipment 462 positioning conduit bushings so that extend to contact end diffuser 464 inner chamber 484 part along longitudinal axis 482 with Outlet opening 486 is aligned.To the embodiment addition aligning equipment 462 cause conduit bushing to extend in inner chamber 484 so that Welding wire feeding is by conduit bushing so as to as one man be sent out into fillet entrance 488 and by outlet opening 486.

Aligning equipment 462 disclosed in the 7th embodiment another be characterized in inner passage 492 border on it is many Individual port 490.Conduit bushing is arranged in inner passage 492 with by the inner chamber of conduit bushing and contact end diffuser 464 484 alignments, and multiple ports 490 provide increased area of section in conductor tube 454.Increased area of section ensures alignment Equipment 462 does not limit flowing of the protective gas by conductor tube 454.

With reference now to Figure 29, aligning equipment 462 includes press-fit surface 502, and the press-fit surface is forced into conductor tube To be forced into press-fit chamber 504 in 454 distal end 466.The distal end 466 of conductor tube 454 further defines outer surface profile 506, The outer surface profile is substantially circular, the radially aligned machine with such as flat part, contact pin, keyed slit or groove Structure.In this example, flat part 508 is arranged on two opposite sides so as to radially aligned.The Internal periphery 468 of sleeve pipe 456 is configured Into slidably engaging outer surface profile 508 so that sleeve pipe 456 can be slided along longitudinal axis 482, but be enclosed by limitation Rotated around conductor tube 454.Finally, in order to limit the motion along longitudinal axis, locking ring 472 is arranged in annular groove 474. In the case where locking ring 472 is in place, sleeve pipe 456 is fully limited.The bonded conductor pipe 454 of contact end diffuser 464 Distally 466, and the cooperation table that passes through each screw thread in multiple screw threads 460 and 478 of interior main body 476 of nozzle assembly 452 Face is connected to the bonding part 458 of sleeve pipe 456.

The component of the present embodiment of welder is described in further detail in the sectional view of the assembling shown in Figure 30, is The interior main body 476 of nozzle assembly 452 is illustrate only for the sake of clear.In order to keep the position of contact end diffuser, interior main body 476 further define interior distal end flange 520, the exterior shoulder of interior distal end flange abutting contact end diffuser 464 Portion 522 and the position for keeping contact end diffuser 464.The bonding part 458 for being defined to the sleeve pipe 456 of multiple screw threads 460 is clear Chu it is shown as engaging multiple screw threads 478 of interior main body 476.Further there is illustrated the press-fit chamber 504 of conductor tube to show basis The press-fit surface 502 of the aligning equipment 462 of the present embodiment assembling.

According further to the 7th embodiment of the disclosure, Figure 31 A show the connection of sleeve pipe 456 and conductor tube 454.Leading Outer surface profile 506 at the distal end 466 of body pipe 454 includes flat part 508 on two opposite sides.Sleeve pipe 456 it is interior Surface profile 468 is configured to slidably engage outer surface profile 506 so that sleeve pipe 456 can be slided along longitudinal axis 482 It is dynamic, but limited around the rotation of conductor tube 454.Also show in Figure 31 A bonding part 458 and multiple screw threads 460 with Further details are provided.

The 7th embodiment similar to the disclosure and it is related to foregoing embodiments, sleeve pipe 550 and conductor tube to returning 552 different modifications are shown in Figure 31 B.In this example, the outer surface profile 554 of conductor tube is defined as with keyway 556 and key 558 engaged with the inner surface profile 560 with sleeve pipe 550.In this example, it is arranged in key 558 in keyway 556 simultaneously And in the inner surface profile 560 of sleeve pipe 550 in the case of, the distal end 562 of the bonded conductor pipe 552 of sleeve pipe 550, and it surrounds The rotation of conductor tube 552 is limited.Conductor tube 552 can be similarly configured to by spline connection come the inner surface of abutment sleeve Profile.In addition, the bonding part 564 of sleeve pipe 550 is defined as cam lock part 566.Similar to the first embodiment, cam The interior main body of the engagement nozzle component (not shown) of locking member 566, rather than it is many in the consumable assembly of the 7th embodiment Individual screw thread 460.

It is related to foregoing embodiments in the another implementation of the 7th embodiment of the disclosure and to returning, conductor tube 568 and sleeve pipe 570 different modifications figure 32 illustrates.The modification is similar to the modification disclosed in Figure 31 A, but including fixing Screw 572 is used as the device that sleeve pipe 570 is fixed to conductor tube 568.Fixing screws 572 are arranged on the He of hole 574 in sleeve pipe 570 In screwed hole 576 in conductor tube 568, sleeve pipe 570 is fixed to conductor tube 568.The implementation can also include sleeve pipe 570, Described sleeve pipe has the elongate surface 578 for the distal end 466 that conductor tube 568 is at least extended in assembling.Originally sleeve pipe is practiced 570 to protect the distal end 466 of conductor tube 568 from wearing and tearing and protecting distal end 466 from impact.

Referring back to the 7th embodiment introduced in Figure 28, Figure 33 A show aligning equipment 462.Multiple quilts of port 490 Clearly it is depicted as being evenly spaced apart around inner passage 492 and borders on inner passage.The proportional spacing of multiple ports allows Protective gas as one man passes through aligning equipment 462.In addition, press-fit surface 502, which is shown as having, is arranged on falling for near-end 604 Angle 602, so as to easily fabricated when being pressed into the distal end 466 of conductor tube 454 and against press-fit chamber 504.

With reference now to Figure 33 B and Figure 33 C, the different modifications of the aligning equipment 462 similar to the 7th embodiment are shown, There is provided the alternate embodiment that can be incorporated to from the foregoing teaching of the disclosure.Aligning equipment 606 shown in Figure 33 B, which has, to be set Put multiple ports 608 in the wall 610 of aligning equipment 606.In addition, this example has outer surface 612 rather than with such as Press-fit surface 502 disclosed in seven embodiments, the outer surface limits multiple screw threads 614, and the screw thread arrangement is into connection To the thread surface being arranged in conductor tube.

Aligning equipment 616 shown in Figure 32 B has multiple ports 618 so that when aligning equipment 616 is arranged on conductor tube When in (not shown), multiple ports 618 border on the inner surface 619 (shown in dotted line) of conductor tube.In addition, outer surface 620 is surrounded Aligning equipment 616 is set and including cam lock part 622.In this example, the inner surface of conductor tube also defines engagement Part, the bonding part is configured to engagement cam lock part 622 and keeps aligning equipment 616.Previous example is not built View limits other modifications but is presented with the possibility embodiment of the teaching disclosure.

In another form, Figure 34 to Figure 36 shows the 8th embodiment party of the conductor tube assembly 700 including sleeve pipe 702 Case.Similar to the 7th embodiment discussed in above-mentioned and Figure 28-Figure 32, conductor tube 710 limits inner passage 704, and far End part 706 further defines the distal face 708 around inner passage 704.As previous discussed in the other forms of the present invention, Conductor tube assembly 700 includes sleeve pipe 702, and sleeve pipe 702 is slidably engaged on the outer surface profile 712 of conductor tube 710.It is special Not, inner surface and outer surface are complementary so that sleeve pipe longitudinal sliding motion in conductor tube 710.Consumable assembly 714 (Figure 35) Engaged with the bonding part 716 of sleeve pipe 702 and contact end 738 is fixed therebetween and is fixed in conductor tube 710 in place.

With reference to Figure 37-Figure 39, sleeve pipe 702 includes main body 709, the main body proximal part 722 and distal portions 721 it Between have along longitudinal axis 720 length.Main body 709 limits inner surface profile 718 and outer surface profile 724.Inner surface wheel Exterior feature 718 allows sleeve pipe 702 to be slidably engaged on the outer surface profile 712 of conductor tube 710.The He of outer surface profile 712 Both inner surface profiles 718 are complementary.In one form, sleeve pipe 702 and conductor tube 710 limit a pair it is relative flat Face 726, tabular surface splits the curved surface of inner surface profile 718.Tabular surface 726 provides anti-rotational feature to prevent sleeve pipe 702 Rotated around longitudinal axis 720 around conductor tube 710.It is to be further understood that anti-rotational feature can include it is various Cross sectional shape, its offer is flat, angular, oval or other unmatched profiles with prevent in distal part slide Matable assembly rotation, therefore form illustrated and described here is not necessarily to be construed as the limitation to disclosure scope.

The distal portions 721 of sleeve pipe 702 further define the lip 728 extended radially inwardly from its distal portions 721.Lip from Inner surface profile extends internally.Lip 728 forms the seating face 730 towards near-end, and the seating face is engaged against conductor tube 710 Distal face 708.It will be discussed in detail below, lip 728 can also provide positioning and stop feature, to help the first hole 732 the first openings 734 of alignment.Lip 728 also provides extra intensity for sleeve pipe 702.Also it is also understood that lip 728 is engaged Against the distal face 708 of conductor tube 710, and if conductor tube assembly 700 drop unintentionally during use at the scene or by Impact, then lip 728 is that conductor tube 710 provides some protection and prevents the damage to inner passage 704.It should be appreciated that root According to the manufacturing process and its desired function, intensity and durability of manufacture sleeve pipe 702, lip 728 is optional.

Sleeve pipe 702 can by the various methods including machining or metal injection molding technology (also referred to as MIM) come Manufacture.The sleeve pipe 702 manufactured by MIM techniques is by moulding main body 709 and the more complicated shape of inner surface profile 718 and spy Portion is levied to allow the more complicated geometry for being difficult to be machined.These supplementary features and more complicated shape can allow pair Conductor tube assembly 700 realizes Additional Protection, and/or can also include by increasing the contact between sleeve pipe 702 and conductor tube 710 Area improves the heat transfer from consumable assembly 714, passes through hexagonal configuration as example etc..

Sleeve pipe 702 can be made up of various hardening metals and alloy, and the stainless steel of such as resistance to deformation and impact failure is closed Gold.Sleeve pipe 702 also provides extra intensity for the distal portions 706 and distal face 708 of conductor tube 710.Conductor tube 710 generally by Copper product is manufactured and relatively extending.Conductor tube assembly 700 also solves the extendable problem in conventional conductor tube assembly With the screw thread of damage, because sleeve pipe 702 is made up of hardening metal, and it can be removed and replaced if sleeve pipe 702 is damaged.

The outer surface profile 724 of sleeve pipe 702 defines the bonding part 716 for fixing consumable assembly 714, such as such as Preceding described nozzle assembly 736 and contact end 738.In this form, bonding part 716 is further defined to from sleeve pipe 702 The threaded portion 740 that the proximally facing part 722 of distal portions 721 extends.Thread form geometries and design can be according to required Moment of torsion changes with feature is kept.In one form, threaded portion 740 can be standard pitch, and in another form In, pitch can be the variable holding to strengthen consumable assembly.For example, in this form of the present invention, sleeve pipe 702 is wrapped Starting taper 742 is included, the starting taper formation guiding piece is to be initially directed at consumable assembly 714, so that fixed and conductor tube assembly 700 Engagement.

As best shown in Figure 39, starting taper 742 is produced by changing the crest height of each screw thread 744.Starting taper 742 exists There is maximum crest height 746 at proximally facing part 722, and crest height towards sleeve pipe 702 distal portions 721 gradually Reduce.The lip 728 of minimum crest thread depth 748 and sleeve pipe 60 adjoins.Starting taper 78 provides easier with component Alignment, and the specific Design of Screw Thread also reduces the possibility of component cross threading.In another form, sleeve pipe 60 The preceding surface 750 of round shape can alternatively be included is used for the alignment of further mate-assist part.The preceding surface 750 of round shape is provided in lip Transition between portion 748 and threaded portion 740.The preceding surface 750 of round shape can change to provide leading edge and transition table on a radius Face, so that the further alignment of mate-assist part.

As being further illustrated in Figure 40, sleeve pipe 702 limits the first hole 732 at the position length 752 of distance distal end 754. Conductor tube 710 includes leading to the first opening 734 in inner passage 704, and the first opening 734 is apart from its distal face 708 Corresponding position length 756 at.These position lengths 752,756 are equal to allow sleeve pipe 702 in the distal portions of conductor tube 710 Being properly aligned with 706 and position.It should be appreciated that position length can become according to the various operating parameters and size of welding gun Change.

As shown in figure 41, sleeve pipe is by extend through the first hole 732 in the inner passage 704 of conductor tube 710 and opening 734 fastener 758 is secured in place.Fastener 758 can be alternatively fixing screws 760.Fixing screws 760 can be in length Change on degree and extend in the inner passage 704 of conductor tube 710 conduit bushing 762 being maintained in inner passage 704 just Position.Fixing screws 760 can change the amount of the active force with adjustment effect on conduit bushing 762 in length.

With reference to Figure 42, sleeve pipe 702 can alternatively limit the second hole 764, second hole around the first hole 732 and with It is relatively radial be spaced apart.In this form, conductor tube 710 further defines the second opening 766 into inner passage 704. Second opening 766 and the first opening 734 are relatively radial spaced apart and are aligned with the second hole 764 of sleeve pipe 702.Second fastening Part 768 extends through the second hole 764 and opening 766 enters the inner passage 704 of conductor tube 710.Conduit bushing 762 can also lead to The clamping force crossed between the first fastener 758 and the second fastener 768 is fixed in conductor tube 710 in place.Illustrated In form, fastener is fixing screws, but it is to be understood that various fasteners and pin are still within the scope of the invention.

The disclosure is only exemplary in nature, and therefore, the modification without departing from the spirit of the disclosure is intended to be in this public affairs In the range of opening.These modifications are not to be regarded as a departure from the scope contemplated by the disclosure.

Claims

1. a kind of arc welding equipment, including：

The conductor tube of inner passage is limited, the conductor tube includes outer surface profile and with around the remote of the inner passage The distal portions of end face；And

The sleeve pipe of main body is limited, the main body has the length extended between proximal part and distal portions along longitudinal axis Degree, the main body limits inner surface profile and outer surface profile, and the inner surface profile is configured to be slidably engaged in conductor On the outer surface profile of pipe, and the outer surface profile of described sleeve pipe includes bonding part.

2. the distal portions of arc welding equipment according to claim 1, wherein described sleeve pipe are limited from the distal end of described sleeve pipe The seat that the distal face of the lip that partial remainder is extended radially inwardly, the lip formation and the conductor tube is engaged against Surface.

3. the bonding part of arc welding equipment according to claim 1, wherein described sleeve pipe is further defined from distal portions direction The threaded portion of proximal part extension.

4. arc welding equipment according to claim 3, wherein the threaded portion includes starting taper, and wherein described starting taper limit Determine the crest height of screw thread, and the distal portions of the crest height towards described sleeve pipe are gradually reduced.

5. arc welding equipment according to claim 1, wherein the outer surface profile of the conductor tube is configured to slidably Ground engages described sleeve pipe and limits the rotation for surrounding the longitudinal axis.

6. arc welding equipment according to claim 5, wherein described at least one flat surfaces of outer surface contour limit with The rotation of the longitudinal axis is surrounded in the conductor tube for limiting described sleeve pipe.

7. arc welding equipment according to claim 1, wherein described sleeve pipe further define first through the main body of described sleeve pipe Hole, and conductor tube restriction extends through at least one opening that the conductor tube is entered in the inner passage, and And wherein described sleeve pipe is slidably fastened to the conductor tube by fastener, the fastener is engaged through first hole And enter the opening.

8. arc welding equipment according to claim 7, wherein described sleeve pipe limit the second hole, second hole surrounds the set Pipe be radially spaced with first hole, and the conductor tube limit second be open, it is described second be open spaced radial with The second hole alignment, and the second fastener extends through second hole and second opening enters the conductor tube The inner passage.

9. arc welding equipment according to claim 8, in addition to the conduit lining being supported in the inner passage of the conductor tube Set, and wherein described conduit bushing is fixed on the conductor tube between first fastener and second fastener It is interior.

10. a kind of arc welding equipment, including：

Conductor tube, the conductor tube limits inner passage and distal portions, the distal portions limit outer surface profile with And the distal face around the inner passage；

Sleeve pipe, described sleeve pipe includes：

Main body with proximal part and distal portions, the main body limits inner surface profile and outer surface profile, the main body The inner surface profile be configured to be slidably engaged on the outer surface profile of the conductor tube, and the outer surface Profile includes threaded portion；

The lip extended radially inwardly from the distal portions of the main body, and lip formation and the conductor tube The seating face that the distal face is engaged against；

Consumable assembly, the consumable assembly has an interior main body, and the interior main body includes being configured to being attached mechanically to described The Internal periphery of the threaded portion of sleeve pipe and the distal end with interior distal end flange；

Contact end, the contact end limits externals shoulders, and the externals shoulders are configured to convex against the interior distal end Edge so as to by the contact end be fixed to the conductor tube.

11. arc welding equipment according to claim 15, wherein the threaded portion includes starting taper, and wherein described starting taper The crest height of screw thread is limited, and the distal portions of the crest height towards described sleeve pipe are gradually reduced.

12. arc welding equipment according to claim 10, wherein described sleeve pipe further define the main body through described sleeve pipe The first hole, and the conductor tube limits at least one opening, and wherein described sleeve pipe is slidably fastened to by fastener The conductor tube, the fastener connects through first hole and the opening and is combined into the inner passage.

13. arc welding equipment according to claim 12, wherein described sleeve pipe limit the second hole, second hole is around described Sleeve pipe is radially spaced with first hole, and the conductor tube limit second be open, it is described second opening spaced radial with It is aligned with second hole, and the second fastener extends through second hole and second opening enters the conductor tube The inner passage.

14. the distal portions of arc welding equipment according to claim 10, wherein described sleeve pipe further define the lip The preceding surface of round shape between the threaded portion.

15. a kind of adapter sleeves, the adapter sleeves are used for the conductor tube of arc welding equipment, the adapter sleeves include：

Main body, the main body has the length extended between proximal part and distal portions along longitudinal axis, the main body Inner surface profile and outer surface profile are limited, the inner surface profile is configured to be slidably engaged in the conductor tube, and And the outer surface profile of described sleeve pipe includes threaded portion.

16. adapter sleeves according to claim 15, wherein the main body is included from the distal portions radially-inwardly The lip of extension.

17. adapter sleeves according to claim 15, wherein the distal portions of the main body further define lip and The preceding surface of round shape between the threaded portion.

18. adapter sleeves according to claim 15, wherein the inner surface profile limits at least one flat surfaces The rotation of the longitudinal axis is surrounded for limitation described sleeve pipe.

19. adapter sleeves according to claim 15, wherein the threaded portion includes starting taper, and the starting taper is limited Determine the crest height of screw thread, and the distal portions of the crest height towards described sleeve pipe are gradually reduced.

20. adapter sleeves according to claim 15, wherein the adapter sleeves be by from metal, metal alloy or A kind of material metal injection molding selected in plastic material, the material can bear making in the arc welding equipment The ampere applied with period and the heat produced.