CN207043522U - Water cooled welding torch - Google Patents

Abstract

The utility model proposes a kind of water cooled welding torch; water cooled welding torch of the present utility model includes gun barrel and is arranged at the barrel block that gun barrel one end is used to fix gun barrel; gun barrel includes wire-feeding pipe, inner tube, distributive pipe and the outer tube being coaxially disposed; and wire-feeding pipe, inner tube, distributive pipe and outer tube are arranged in order from inside to outside; the external diameter of inner tube is less than the internal diameter of distributive pipe; to form the air flue passed through for protective gas between inner tube and distributive pipe, wire-feeding pipe passes through for welding wire out of it.Water cooled welding torch of the present utility model can make air-flow more stable, improve welding effect.

Description

Water cooled welding torch

Technical field

It the utility model is related to welding technology field, more particularly to a kind of water cooled welding torch.

Background technology

Electric arc welding is a kind of industrially very conventional welding manner, wherein, the application of gas shielded arc welding is more wide It is general, electric arc and weld zone can be protected by the use of gas as electric arc medium.Water cooling gas shielded welding equipment is usual equipment, It generally includes water cooled welding torch, air supply system and cooling system etc., and water cooled welding torch is wherein highly important part.

As depicted in figs. 1 and 2, existing water cooled welding torch generally comprises barrel block 1a and gun barrel 2a, and gun barrel 2a one end is consolidated Due to barrel block 1a, and gun barrel 2a includes the wire-feeding pipe 21a, distributive pipe 22a, inner tube 23a and the outer tube that set gradually from inside to outside 24a；Wire-feeding pipe 21a passes barrel block 1a, and welding wire can be penetrated in wire-feeding pipe 21a, so as to along wire-feeding pipe 21a wire feeds；Distributive pipe It is formed with direction shown in arrow in the passage 3a, Fig. 1 of protective gas can be passed through between 22a inwall and wire-feeding pipe 21a outer wall The direction of protective gas in passage 3a；Distributive pipe 22a outer wall and inner tube 23a inwall incomplete contact between, form intake tunnel 4a and backwater channel 5a.

But in the prior art, wire-feeding pipe 21a is usually flexible pipe and is located in distributive pipe 22a, during wire feed, is sent Fiber tube 21a can be moved, and protective gas is input into distributive pipe 22a, and protective gas is directly outer with wire-feeding pipe 21a Wall contacts, thus wire-feeding pipe 21a can produce disturbance to protective gas, cause air-flow unstable；Simultaneously as wire-feeding pipe 22a is worn Go out barrel block 1a so that protective gas may leak along wire-feeding pipe 22a, make air pressure and flow-reduction, influence welding quality.

Above- mentioned information is only used for strengthening the understanding to background of the present utility model disclosed in the background section, because This it can include not forming the information to prior art known to persons of ordinary skill in the art.

Utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided one kind can make air-flow more stable, And improve the water cooled welding torch of welding quality.

Additional aspect and advantage of the present utility model will be set forth in part in the description, and partly will be from retouching It is apparent from stating, or can be by practice of the present utility model and acquistion.

According to one side of the present utility model, a kind of water cooled welding torch, including gun barrel and it is arranged at the gun barrel one end For fixing the barrel block of gun barrel, the gun barrel includes wire-feeding pipe, inner tube, distributive pipe and the outer tube being coaxially disposed, and described Wire-feeding pipe, inner tube, distributive pipe and outer tube are arranged in order from inside to outside, and the external diameter of said inner tube is less than the internal diameter of the distributive pipe, To form the air flue passed through for protective gas between said inner tube and the distributive pipe, the wire-feeding pipe is worn for welding wire out of it Cross.

According to an embodiment of the present utility model, the internal diameter of said inner tube is more than the external diameter of the wire-feeding pipe, with institute State and an annular space is formed between inner tube and the wire-feeding pipe.

According to an embodiment of the present utility model, the two opposite sides of the outer peripheral face of the distributive pipe and the outer tube wall Face sealing coordinates, and the other parts of the outer peripheral face of the distributive pipe do not contact the outer tube, to divide water with described in the outer tube Intake tunnel and backwater channel are formed between pipe.

According to an embodiment of the present utility model, the area of the radial section of the backwater channel is more than the water inlet and led to The area of the radial section in road.

According to an embodiment of the present utility model, the area of the intake tunnel is corresponded on the outer peripheral face of the distributive pipe Domain is curved surface or faceted pebble, and the region that the backwater channel is corresponded on the outer peripheral face of the distributive pipe is curved surface or faceted pebble.

According to an embodiment of the present utility model, the area of the intake tunnel is corresponded on the outer peripheral face of the distributive pipe The radial section in domain is isosceles triangle, and the radial direction that the region of the backwater channel is corresponded on the outer peripheral face of the distributive pipe is cut Face is isosceles trapezoid.

According to an embodiment of the present utility model, the gun barrel also includes insulation tube, and the insulative pipe sleeve is located at described Outside outer tube.

According to an embodiment of the present utility model, the water cooled welding torch also includes air inlet pipe joint, and the air inlet pipe connects Head connects located at the barrel block and with the air flue.

According to an embodiment of the present utility model, the water cooled welding torch also includes admitting pipe joint and returning pipe joint, The admitting pipe joint connects located at the barrel block and with the intake tunnel；The returning pipe joint is located at the barrel block And connected with the backwater channel.

As shown from the above technical solution, the utility model possesses at least one of advantages below and good effect：

In gun barrel in the utility model, inner tube is located in distributive pipe, and air flue is formed between inner tube and distributive pipe, i.e. gas Road is located at beyond inner tube, and wire-feeding pipe is located within inner tube, therefore inner tube separates air flue and wire-feeding pipe in the utility model, Protective gas is caused to disturb so as to avoid wire-feeding pipe, makes air-flow more stable, improves welding quality.

Brief description of the drawings

Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the present utility model will Become readily apparent from.

Fig. 1 is the schematic diagram of the axial cross section of existing water cooled welding torch；

Fig. 2 is the schematic diagram of the radial section of gun barrel in Fig. 1；

Fig. 3 is the side view of the embodiment of the utility model water cooled welding torch one；

Fig. 4 is the top view of water cooled welding torch in Fig. 3；

Fig. 5 is the A-A sectional views of water cooled welding torch in Fig. 3；

Fig. 6 is the B-B sectional views of water cooled welding torch in Fig. 4；

Fig. 7 is the enlarged drawing in C portions in Fig. 5；

Fig. 8 is the enlarged drawing in D portions in Fig. 6；

Fig. 9 is the schematic diagram of the radial section of the gun barrel of the utility model water cooled welding torch；

Figure 10 is the schematic diagram of the radial section of distributive pipe in Fig. 9；

Figure 11 is the enlarged diagram of barrel block in Fig. 6；

Figure 12 is the enlarged drawing in E portions in Figure 11.

In figure：1st, gun barrel；101st, wire-feeding pipe；102nd, inner tube；103rd, distributive pipe；1031st, upper surface；1032nd, lower surface； 1033rd, left surface；1034th, right surface；104th, outer tube；105th, insulation tube；2nd, barrel block；21st, through hole；22nd, groove；23rd, bulge loop； 24th, interface channel；3rd, air flue；4th, intake tunnel；5th, backwater channel；6th, air inlet pipe joint；7th, admitting pipe joint；8th, return pipe connects Head；9th, nozzle connection；10th, ignition tip joint.

Embodiment

Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new The design of example embodiment fully and completely, and will be comprehensively communicated to those skilled in the art by type.Identical in figure Reference represents same or similar structure, thus will omit their detailed description.

Although the term of relativity, such as " on ", " under " are used in this specification come describe icon component for The relativeness of another component, but these terms are used in this specification merely for convenient.If the device of icon is overturn It is turned upside down, then describe " on " component will turn into " under " component.When certain structure other structures " on " When, it is possible to refer to that certain structural integrity is formed in other structures, or refer to certain structure " direct " and be arranged in other structures, or refer to Certain structure is arranged in other structures by another structure " indirect ".Term " one ", "the" and " described " are representing to have one Individual or multiple key element/parts/etc.；Term " comprising " and " having " to represent the open meaning being included and Refer to the key element except listing/part/also may be present in addition to waiting other key element/part/etc..

A kind of water cooled welding torch is provided in the utility model example embodiment, available for water cooling gas shielded welding equipment, The water cooling gas shielded welding equipment can include wire feed component, gas supply assembly, cooling component.As shown in Fig. 3~Figure 12, this reality Gun barrel 1 and barrel block 2 can be included by applying the water cooled welding torch of mode, and barrel block 2 is securable to one end of gun barrel 1.

In the present embodiment, gun barrel 1 can include wire-feeding pipe 101, inner tube 102, the Fen Shui being arranged in order from inside to outside Pipe 103, outer tube 104 and insulation tube 105, wherein：

One end of wire-feeding pipe 101 may pass through gun barrel 1 and is connected with above-mentioned wire feeder, and welding wire can be penetrated in wire-feeding pipe 101, And carry out wire feed along wire-feeding pipe 101 by the wire feeder.Wire-feeding pipe 101 can be pipe, i.e., its radial section can be circular, footpath Can be the section of the axis perpendicular to gun barrel 1 to section.The internal diameter of wire-feeding pipe 101 can be more than the diameter of welding wire, to ensure welding wire It can be moved freely along wire-feeding pipe 101.Certainly, the shape of the radial section of wire-feeding pipe 101 can also be square, oval etc., only Want welding wire to pass through and can move freely.Wire-feeding pipe 101 can be flexible pipe, can be with the swing of the beat or gun barrel 1 of welding wire And corresponding deformation occurs, certain wire-feeding pipe 101 is not limited to flexible pipe, and it can also be hard tube.The material of wire-feeding pipe 101 can be with It is polytetrafluoroethylene (PTFE), polyamide or other insulating materials, certainly, wire-feeding pipe 101 can also be composite.In addition, wire feed The tube wall of pipe 101 can be single layer structure or multi-layer compound structure.

Inner tube 102 is located at the outside of wire-feeding pipe 101, and one end of inner tube 102 can stretch into barrel block 2.The radial direction of inner tube 102 is cut The shape in face can be circular, square, oval or Else Rule and irregular shape.The internal diameter of inner tube 102 can be more than wire feed The external diameter of pipe 101 so that form an annular space between the internal face of inner tube 102 and the outside wall surface of wire-feeding pipe 101.In wire-feeding pipe In the case of 101 are hard tube, inner tube 102 can be coaxially disposed with wire-feeding pipe 101, and certain axis of the two can also be parallel to each other. In another embodiment, the internal diameter of inner tube 102 can also be identical with the external diameter of wire-feeding pipe 101 so that the internal face of inner tube 102 with The outside wall surface of wire-feeding pipe 101 is bonded completely.Inner tube 102 can be that hard tube is alternatively flexible pipe, and its material can be plastics or other materials Material, does not do particular determination herein.

Distributive pipe 103 can be sheathed on outside inner tube 102, and one end of distributive pipe 103 can stretch into barrel block 2, distributive pipe 103 It can be coaxially disposed with wire-feeding pipe 101.The internal diameter of distributive pipe 103 can be more than the external diameter of inner tube 102, so as in inner tube 102 and Fen Shui Air flue 3 is formed between pipe 103, the air flue 3 can connect with above-mentioned gas supply assembly, so as to by the gas supply assembly into air flue 3 Protective gas is inputted, direction shown in arrow is the direction of protective gas in air flue 3 in Fig. 6.In the utility model, due to air flue 3 Separated with wire-feeding pipe 101 by inner tube 102, wire-feeding pipe 101 can be avoided to produce disturbance to the air-flow in air flue 3, make air-flow more It is stable, also protective gas can be avoided to be leaked along wire-feeding pipe 101 from barrel block 2；Meanwhile in the internal face and wire-feeding pipe of inner tube 102 In the case of above-mentioned annular space is formed between 101 outside wall surface, it is gentle that the annular space also can further obstruct wire-feeding pipe 101 Road 3, so as to further avoid disturbance of the wire-feeding pipe 101 to air-flow.Above-mentioned protective gas can be the inert gases such as argon gas, also may be used To be the gases such as carbon dioxide, or protective gas can also be mixed gas.The outer peripheral face of distributive pipe 103 can be irregular Surface.

Outer tube 104 can be sheathed on outside distributive pipe 103 and can be coaxially disposed with wire-feeding pipe 101, and one end of outer tube 104 can stretch Enter barrel block 2.The two opposite sides of the outer peripheral face of distributive pipe 103 can seal with the internal face of outer tube 104 to be coordinated, and distributive pipe 103 The other parts of outer peripheral face do not contact outer tube 104, so as to which the inner space of outer tube 104 is separated by distributive pipe 103, Intake tunnel 4 and backwater channel 5 are formed between outer tube 104 and distributive pipe 103, and intake tunnel 4 can distinguish position with backwater channel 5 In the two opposite sides of distributive pipe 103.Intake tunnel 4 and backwater channel 5 can be connected with above-mentioned cooling component, and the cooling component can Coolant is inputted to intake tunnel 4, and coolant is reclaimed by backwater channel 5, so as to be cooled down to gun barrel 1.Coolant can To be water or other can be used for the coolant that cools.

As shown in figure 9, the region corresponding to intake tunnel 4 and the internal face phase of outer tube 104 on the outer peripheral face of distributive pipe 103 To relatively near, and on the outer peripheral face of distributive pipe 103 corresponding to backwater channel 5 region and outer tube 104 internal face relatively far away from, with Allow the area of the radial section of above-mentioned backwater channel 5 more than the area of the radial section of intake tunnel 4.It is constant in water In the case of, the relatively small flow velocity for making the coolant in intake tunnel 4 of the radial section of intake tunnel 4 increases, and is easy to accelerate Cooling velocity, the cooling effect of gun barrel 1 is improved, be advantageous to improve welding quality.In addition, coolant can be in distributive pipe 103 and outer Flowed between pipe 104, coolant directly contacts with outer tube 104, is not directly contacted with compared to prior art middle external tube 104 with coolant Mode, the water cooled welding torch of present embodiment is more beneficial for the radiating of outer tube 104, improves the cooling effect of gun barrel 1.

Region on the internal face of outer tube 104 corresponding to backwater channel 5 can be curved surface or faceted pebble, distributive pipe 103 Region on outer peripheral face corresponding to intake tunnel 4 can also be curved surface or faceted pebble；Correspond to water inlet on the internal face of outer tube 104 The region of passage 4 can be curved surface or faceted pebble；Region on the outer peripheral face of distributive pipe 103 corresponding to backwater channel 5 can also It is curved surface or faceted pebble.

For example, in one embodiment, outer tube 104 can be pipe, the radial section and outside wall surface of inner wall surface thereof Radial section can be circle.As shown in Figure 10, the outer peripheral face of distributive pipe 103 may include upper surface 1031, lower surface 1032, Left surface 1033 and right surface 1034.Wherein：

Upper surface 1031 and lower surface 1032 can be respectively with outer tube 104 internal face be bonded, with realize be fitted close；Left-handed watch The internal face of face 1033 and right surface 1034 not with outer tube 104 contacts.Intake tunnel 4 is left surface 1033 and outer tube 104 Space between internal face；Backwater channel 5 can be between right surface 1034 and the internal face of outer tube 104 space.Left surface 1033 be the region for corresponding to intake tunnel 4 on the outer peripheral face of distributive pipe 103, and right surface 1034 is the outer of distributive pipe 103 Correspond to the region of backwater channel 5 on side face.Upper surface 1031 and lower surface 1032 can be the cambered surface matched with outer tube 104, Left surface 1033 and right surface 1034 can be faceted pebble, and further, the radial section of left surface 1033 can be in isosceles triangle, The radial section on right surface 1034 can be in isosceles trapezoid.The isosceles triangle is close to the end of the internal face of outer tube 104 and outer tube Distance between 104 internal face is the first distance, and the isosceles trapezoid is close to one side of the internal face of outer tube 104 and outer tube 104 Distance between internal face is second distance, and the second distance is more than the first distance.

In another embodiment, the internal face of outer tube 104 can be made outwards to be recessed corresponding to the region of backwater channel 5, The area of the radial section of backwater channel 5 can equally be increased.

It should be noted that the area of the radial section of backwater channel 5 can also be equal to the radial section of intake tunnel 4 Area so that intake tunnel 4 is symmetrical on distributive pipe 103 with backwater channel 5, and now, in the case where water is constant, water inlet is logical The flow velocity of coolant is identical with the flow velocity of the coolant in backwater channel 5 in road 4.Accordingly, above-mentioned left surface 1033 and right table Face 1034 can be symmetrical curved surface or faceted pebble, will not be described in detail herein.

Insulation tube 105 can be sheathed on outside outer tube 104, and the internal face of insulation tube 105 can be close with the outside wall surface of outer tube 104 Coordinate, or the space of annular can be formed between insulation tube 105 and outer tube 104.Insulation tube 105 can be independent pipeline or spraying Coating outside outer tube 104；The material of insulation tube 105 can be with plastics, rubber or other materials.

In the present embodiment, as is illustrated by figs. 11 and 12, barrel block 2 can be the column structure of both ends insertion, its material Matter can be copper, but be not limited, and can also be other materials.One end of gun barrel 1 is securable to one end of barrel block 2.

For example, as shown in figure 12, the through hole 21 of insertion can be provided with barrel block 2, bulge loop 23, rifle are provided with through hole 21 Base 2 is provided around the groove 22 of through hole 21 for fixing one end of gun barrel 1.The distributive pipe 103 and outer tube 104 of above-mentioned gun barrel 1 Groove 22 can be penetrated, and the end of distributive pipe 103 can be resisted against the bottom of groove 22.Wire-feeding pipe 101 may pass through the He of groove 22 Through hole 21 simultaneously passes barrel block 2, and wire-feeding pipe 101 can be connected with above-mentioned wire feed component.Inner tube 102 penetrates through hole 21 and is resisted against Bulge loop 23.Meanwhile interface channel 24 is additionally provided with barrel block 2, the one end of interface channel 24 can connect with air flue 3, and the other end can With being connected outside barrel block 2.

In the present embodiment, as shown in Figures 3 to 6, water cooled welding torch can also include air inlet pipe joint 6, water inlet pipe connects First 7, returning pipe joint 8, wherein：

Air inlet pipe joint 6 can be located on barrel block 2, and gun barrel 1 and air inlet pipe joint 6 can be located at the two of barrel block 2 respectively End；Air inlet pipe joint 6 can connect with air flue 3.For example, one end of air inlet pipe joint 6 can connect with above-mentioned interface channel 24, And be fixedly connected by modes such as clamping, threaded connections with the one end of air inlet pipe joint 6, the other end of air inlet pipe joint 6 can be with confession Pneumatic module connects.

Admitting pipe joint 7 and returning pipe joint 8 can be located on barrel block 2, and are located at barrel block 2 with air inlet pipe joint 6 Same one end.One end of admitting pipe joint 7 can connect with intake tunnel 4, and the other end can connect with cooling component；Return pipe connects First 8 one end can connect with backwater channel 5, and the other end can connect with cooling component.So as to pass through water inlet using cooling component Pipe joint 7 inputs coolant into intake tunnel 4, then reclaims coolant by backwater channel 5 and returning pipe joint 8.

In the present embodiment, water cooled welding torch can also include nozzle connection 9 and ignition tip joint 10, wherein：

Nozzle connection 9 can be the structure of both ends insertion, and it can be sheathed on the one end of gun barrel 1 away from barrel block 2, citing and Speech, nozzle connection 9 can be sheathed on one end of the remote barrel block 2 of insulation tube 105, and wire-feeding pipe 101 and inner tube 102 can pass spray Mouth joint 9.

Ignition tip joint 10 or the structure of both ends insertion, one end of ignition tip joint 10 can penetrate nozzle connection 9.Point The outer wall of the one end of water pipe 103 away from barrel block 2 can penetrate nozzle connection 9 formed with annular spill area, ignition tip joint 10 Interior one end can be sheathed on the spill area and in outer tube 104.One end that ignition tip joint 10 is located at outside nozzle connection 9 can cover In inner tube 102.

The water cooled welding torch of the utility model example embodiment, because inner tube 102 is located in distributive pipe 103, including air flue 3 Between pipe 102 and distributive pipe 103, i.e., air flue 3 is located at outside inner tube 102, and wire-feeding pipe 101 is located in inner tube 102, so as to by interior Pipe 102 separates air flue 3 and wire-feeding pipe 101, avoids wire-feeding pipe 101 from causing to disturb to the protective gas in air flue 3, makes air-flow more Add stabilization, and can prevent protective gas from passing the position of barrel block 2 along wire-feeding pipe 101 from wire-feeding pipe 101 and leaking, avoid causing gas Pressure and flow-reduction, be advantageous to improve welding effect.

It should be noted that the water cooled welding torch of above-mentioned example embodiment can also include other components, it is no longer detailed herein State.In addition, water cooling gas shielded welding equipment in above-mentioned example embodiment and its including wire feed component, gas supply assembly and Cooling component refers to water cooling gas shielded welding equipment in the prior art, will not be described in detail herein.

It should be appreciated that the utility model be not limited in its application to this specification proposition part detailed construction and Arrangement.The utility model can have other embodiment, and can realize and perform in many ways.Foregoing change Shape form and modification fall in the scope of the utility model.It should be appreciated that this disclosure and this reality limited Mentioned or all alternative groups of two or more obvious independent features with the new text and/or drawings that extend to Close.All these different combinations form multiple alternative aspects of the present utility model.Embodiment described in this specification is said Understand and become known for realizing best mode of the present utility model, and those skilled in the art will be enable new using this practicality Type.

Claims (9)

1. a kind of water cooled welding torch, including gun barrel and the barrel block that the gun barrel one end is used to fix gun barrel is arranged at, its feature It is, the gun barrel includes wire-feeding pipe, inner tube, distributive pipe and the outer tube being coaxially disposed, and the wire-feeding pipe, inner tube, Fen Shui Pipe and outer tube are arranged in order from inside to outside, and the external diameter of said inner tube is less than the internal diameter of the distributive pipe, with said inner tube and institute The air flue for being formed between distributive pipe and being passed through for protective gas is stated, the wire-feeding pipe passes through for welding wire out of it.

2. water cooled welding torch according to claim 1, it is characterised in that the internal diameter of said inner tube is more than the outer of the wire-feeding pipe Footpath, to form an annular space between said inner tube and the wire-feeding pipe.

3. water cooled welding torch according to claim 1, it is characterised in that the two opposite sides of the outer peripheral face of the distributive pipe and institute State the sealing of outer tube wall face to coordinate, the other parts of the outer peripheral face of the distributive pipe do not contact the outer tube, with the outer tube Intake tunnel and backwater channel are formed between the distributive pipe.

4. water cooled welding torch according to claim 3, it is characterised in that the area of the radial section of the backwater channel is more than The area of the radial section of the intake tunnel.

5. water cooled welding torch according to claim 4, it is characterised in that enter described in corresponding on the outer peripheral face of the distributive pipe The region of aquaporin is curved surface or faceted pebble, and the region that the backwater channel is corresponded on the outer peripheral face of the distributive pipe is curved surface Or faceted pebble.

6. water cooled welding torch according to claim 4, it is characterised in that enter described in corresponding on the outer peripheral face of the distributive pipe The radial section in the region of aquaporin is isosceles triangle, and the area of the backwater channel is corresponded on the outer peripheral face of the distributive pipe The radial section in domain is isosceles trapezoid.

7. water cooled welding torch according to claim 1, it is characterised in that the gun barrel also includes：

Insulation tube, it is sheathed on outside the outer tube.

8. water cooled welding torch according to claim 1, it is characterised in that the water cooled welding torch also includes：

Air inlet pipe joint, connected located at the barrel block and with the air flue.

9. water cooled welding torch according to claim 1, it is characterised in that the water cooled welding torch also includes：

Admitting pipe joint, connected located at the barrel block and with the intake tunnel；

Returning pipe joint, connected located at the barrel block and with the backwater channel.