CN214815586U

CN214815586U - Water-cooled double-wire single-arc welding contact nozzle structure

Info

Publication number: CN214815586U
Application number: CN202121398375.XU
Authority: CN
Inventors: 邓火生; 余小榕; 文小满; 肖勇; 张婉云; 龙昌茂
Original assignee: Guangxi Welding Robot Technology Co ltd; Guangxi Technological College of Machinery and Electricity
Current assignee: Guangxi Welding Robot Technology Co ltd; Guangxi Technological College of Machinery and Electricity
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-11-23
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a water-cooling twin-wire single arc welding contact tube structure, which comprises a nozzle and a contact tube, wherein the nozzle is provided with an inner shell and an outer shell, and a cavity is arranged between the inner shell and the outer shell; the outer shell is respectively provided with a water inlet pipe and a water outlet pipe which are respectively communicated with the cavity. The existing welding robot cools a welding gun through water cooling, but the cooling part of the welding robot is mainly arranged on an elbow and a connecting rod part of the welding gun, and the cooling of a nozzle and a contact nozzle is limited; when welding thicker work piece, for guaranteeing the penetration of welding part, the electric current of use causes the melting damage of nozzle, contact tip very easily when great, consequently, this is novel has set up inlet tube and outlet pipe on the nozzle, cools off nozzle, contact tip through the water-cooling mode, can effectively reduce the temperature of nozzle and contact tip in the welding process, avoids the part damage that causes because welded high temperature.

Description

Water-cooled double-wire single-arc welding contact nozzle structure

Technical Field

The utility model belongs to the technical field of the welding, concretely relates to water-cooling type twin-wire single arc welding contact tip structure.

Background

Contact tips are important components for guiding welding wire during welding. The existing twin-wire welding uses two contact tips during welding, so that two welding wires penetrating through the contact tips extend out in parallel, but two electric arcs formed in the welding process interfere with each other to influence the stability of the welding quality; in addition, as the double-wire double-arc welding is that two welding wires are welded layer by layer, the problem of low penetration exists, so that the welding strength is not enough, and the welding requirement of high-quality products is difficult to meet; in addition, when a thicker workpiece is welded, the use current is increased, so that the heat production is increased, the heat dissipation is not timely, the melting damage of the contact nozzle and the nozzle is easily caused, and the normal use of welding equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water-cooling type double-thread single-arc welding contact tube structure to solve above-mentioned technical problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a water-cooled double-wire single-arc welding contact nozzle structure comprises a nozzle and a contact nozzle; the contact tube comprises a main body, wherein one end of the main body is provided with a tip end, and the other end of the main body is provided with a connecting part; the nozzle is provided with an inner shell and an outer shell, and a cavity is arranged between the inner shell and the outer shell; the shell body is provided with a water inlet pipe and a water outlet pipe respectively, and the water inlet pipe and the water outlet pipe are communicated with the cavity respectively. The existing welding robot cools a welding gun through water cooling, but the cooling part of the welding robot is mainly arranged on an elbow and a connecting rod part of the welding gun, and the cooling of a nozzle and a contact nozzle is limited; when welding thicker work piece, for guaranteeing the penetration of welding part, the electric current of use causes the damage of nozzle, contact tip very easily when great, consequently, this is novel has set up inlet tube and outlet pipe on the nozzle, cools off the nozzle through the water-cooling mode, can effectively reduce the temperature of nozzle and contact tip in the welding process, avoids the part damage that causes because welded high temperature.

Further, the position height of the water inlet pipe is below the position height of the water outlet pipe. The bottom is supplied with water, and the top is supplied with water, so that the water-cooling effect can be improved.

Furthermore, at least two welding wire holes are formed in the contact tube, and the welding wire holes sequentially penetrate through the connecting portion, the main body and the tip. At least two welding wire holes are arranged in the contact tube, only one electric arc is formed during welding, the mutual interference of the two electric arcs generated in the welding process of the existing double-wire double-arc is avoided, and the stability of welding quality is improved.

Further, the perpendicular distance between the welding wire hole and the longitudinal middle line of the connecting part, the main body and the tip end is gradually reduced. The vertical distance of wire hole and connecting portion, main part, most advanced vertical central line dwindles gradually for the wire hole is "V" shape setting, makes the distance between two welding wires that pass the wire hole constantly diminish, has guaranteed that the welding wire orientation is unanimous, avoids welding process welding wire to diverge, and then has improved the welded penetration depth.

Further, the welding wire hole is equal to the vertical distance of the longitudinal middle line of the connecting part, the main body and the tip on the same horizontal section. Because the number of the arranged welding wire holes is at least 2, the positions of the welding wire holes are further limited so as to be convenient to process, install and use.

Further, the wire holes intersect at an end near the tip as the wire holes extend along the longitudinal centerline of the contact tip, such that the wire passes through the wire holes to meet at a distance of 15-30mm from the tip location. The dry elongation of the welding wires is generally between 15 and 30mm, so that the welding requirements can be met by connecting the two welding wires at a position 15 to 30mm away from the tip, and only one electric arc is formed after the two welding wires are connected, so that the interference between double electric arcs formed by the previous double wires can be avoided, the stability of the electric arc is ensured, and the welding penetration can be improved.

Further, the center distance between the wire holes has a value of 4.5 to 4.8mm at one end of the connection part. The center distance between the wire holes has a value of 1.0-1.4mm at one end of the tip. In order to enable the welding wire holes to be obliquely arranged in the contact tip, the positions of the welding wire holes are further limited by considering the specification size and the processing preparation of the contact tip.

Further, the connecting part is provided with a plurality of tangent planes, and a bulge is arranged between the connecting part and the theme. The section opposite to the section of the connecting part is also arranged in the connecting rod of the welding gun so that the section is attached to the connecting rod when the connecting part is installed. The tangent plane that connecting portion and connecting rod set up is convenient for finely tune the contact tip before the welding to ensure that two welding wires can meet in the dry elongation, guarantee welding quality.

Further, the current contact nozzle structure also covers the sleeve; an opening is formed in one end of the sleeve, and internal threads are formed in the inner side of one end of the opening; the other end of the sleeve is provided with a closing-in, and the inner diameter of the closing-in is the same as the outer diameter of the conductive nozzle. When the conductive nozzle is used, the tip end of the conductive nozzle sequentially penetrates through the opening and the closing-in of the sleeve, so that the protrusion of the conductive nozzle is clamped at the position where the opening is connected with the closing-in. Because the connecting part is provided with the tangent plane, the connecting part is not very firm with the department of meeting of connecting rod, consequently, has used the sleeve pipe, thereby meets through the screw thread with on sleeve pipe opening part and the connecting rod and fixes the contact tip on the connecting rod to ensure welding robot's normal use.

The utility model has the advantages that: 1. the novel nozzle is provided with the water inlet pipe and the water outlet pipe, and the nozzle is cooled in a water cooling mode, so that the temperature of the nozzle and the contact tip in the welding process can be effectively reduced, and the influence on the use caused by the melting of the nozzle and the contact tip due to the high welding temperature is avoided; 2. at least more than two welding wire holes are arranged on the contact tube, so that the interference between two arcs can be avoided during the existing double-wire double-arc welding, and the stability of the welding quality is ensured; 3. the vertical distance between the welding wire hole and the central line of the connecting part, the main body and the tip is gradually reduced, so that the welding wire hole is arranged in a V shape, the orientation of welding wires passing through the welding wire hole can be ensured to be consistent, the welding wires are prevented from being separated in the welding process, and the penetration depth of welding is further improved; 4. the section arranged on the connecting part is convenient for adjusting the welding wires before and after welding so that the two welding wires can be connected in the dry elongation range; 5. the sleeve pipe that sets up can be better with leading electric nozzle fixing in welder's connecting rod, in addition, uses the sleeve pipe fixed for connecting portion need not to set up the screw thread, and the electric current is too big and lead to the screw thread to melt when avoiding welding, thereby has delayed the life of leading electric nozzle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic view of the contact tip (loaded with welding wire).

Fig. 4 is a top view of a contact tip.

Fig. 5 is a bottom view of the contact tip.

Reference numerals: 1-nozzle, 11-inner shell, 12-outer shell, 13-cavity, 14-water inlet pipe, 15-water outlet pipe, 2-conductive nozzle, 21-main body, 22-tip, 23-connecting part, 24-welding wire hole, 25-bulge, 26-sleeve, 27-opening and 28-closing.

Detailed Description

In order to facilitate a better understanding of the invention, the following examples are given with reference to the accompanying drawings, which belong to the scope of protection of the invention, but do not limit the scope of protection of the invention.

Examples

A water-cooled twin-wire single arc welding contact nozzle structure is shown in figure 1-2, and comprises a nozzle 1 and a contact nozzle 2; the contact tube 2 comprises a main body 21, one end of the main body 21 is provided with a tip 22, and the other end is provided with a connecting part 23; the nozzle 1 is provided with an inner shell 11 and an outer shell 12, and a cavity 13 is arranged between the inner shell 11 and the outer shell 12; the outer shell 12 is provided with a water inlet pipe 14 and a water outlet pipe 15 respectively, and the water inlet pipe 14 and the water outlet pipe 15 are communicated with the cavity 13 respectively.

As shown in fig. 1-2, the inlet pipe 14 is located at a level below the level of the outlet pipe 15.

As shown in fig. 1 to 5, at least two wire holes 24 are formed in the contact tip 2, and the wire holes 24 pass through the connecting portion 23, the body 21, and the tip 22 in this order.

As shown in fig. 1-5, the wire hole 24 is progressively less perpendicular to the longitudinal centerline of the connection 23, body 21, and tip 22.

As shown in fig. 1-5, wire hole 24 is equidistant in the same horizontal section from the vertical of the longitudinal midline of connecting portion 23, body 21, and tip 22.

As shown in fig. 1-5, the wire holes 24 intersect at an end near the tip 22 as the wire holes 24 extend along the longitudinal centerline of the contact tip 2, such that the wire passes through the wire holes 24 at a location 15-30mm from the tip 22.

As shown in fig. 4, the center distance between the wire holes 24 has a value of 4.5-4.8mm at one end of the connection portion 23.

As shown in FIG. 5, the center-to-center distance between the wire holes 24 has a value of 1.0-1.4mm at one end of the tip 22.

As shown in fig. 4, the connecting portion 23 has several cut surfaces, and an annular protrusion 25 is disposed between the connecting portion 23 and the main body 21.

As shown in fig. 1-2, the contact tip structure further includes a sleeve 26, an opening 27 is formed at one end of the sleeve 26, and an internal thread is formed inside one end of the opening 27; the other end of the sleeve 26 is provided with a closing-in 28, and the inner diameter of the closing-in 28 is the same as the outer diameter of the main body 21.

The using method comprises the following steps: two welding wires pass through the machine body, sequentially pass through the elbow and the connecting rod, then pass through two welding wire holes of the contact tube and extend out; the tail end of the contact tube penetrates through the opening of the sleeve, so that the protrusion of the contact tube is clamped at the position of the joint of the opening and the closing-in of the sleeve, then the connecting part of the contact tube is inserted into the connecting rod, the external tangent surface of the connecting part is attached to the internal tangent surface of the connecting rod, and the contact tube is properly rotationally adjusted, so that two welding wires penetrate through the nozzle and are connected; the sleeve and the connecting rod are engaged and fixed through threads; the nozzle and the connecting rod are engaged and fixed through threads; the water inlet pipe of the nozzle is connected with a cooling water source, and the water outlet pipe is connected with a recycling container.

After welding for a period of time, the two welding wires may not be connected, and after the temperature of the welding gun is reduced, the nozzle is detached, the sleeve is loosened, the connecting part of the contact tip is rotated properly to connect the two welding wires again, and finally the sleeve and the nozzle are screwed and fixed respectively.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising" is used to specify the presence of stated elements, but not to preclude the presence or addition of additional like elements in a process, method, article, or apparatus that comprises the stated elements.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A water-cooled double-wire single-arc welding contact nozzle structure comprises a nozzle (1) and a contact nozzle (2); the contact tube (2) comprises a main body (21), one end of the main body (21) is provided with a tip (22), and the other end of the main body is provided with a connecting part (23); the nozzle is characterized in that the nozzle (1) is provided with an inner shell (11) and an outer shell (12), and a cavity (13) is arranged between the inner shell (11) and the outer shell (12); the water inlet pipe (14) and the water outlet pipe (15) are respectively arranged on the outer shell (12), and the water inlet pipe (14) and the water outlet pipe (15) are respectively communicated with the cavity (13).

2. The structure of the water-cooled twin-wire single arc welding contact nozzle according to claim 1, characterized in that the position of the water inlet pipe (14) is lower than the position of the water outlet pipe (15).

3. The structure of the water-cooled twin-wire single-arc welding contact tip according to any one of claims 1-2, characterized in that at least two wire holes (24) are formed in the contact tip (2), and the wire holes (24) sequentially penetrate through the connecting part (23), the main body (21) and the tip (22).

4. The contact tip structure for twin wire single arc welding according to claim 3, characterized in that the perpendicular distance between the wire hole (24) and the longitudinal center line of the connecting portion (23), the main body (21) and the tip (22) is gradually reduced.

5. The structure of the contact nozzle for double wire single arc welding according to claim 4, characterized in that the wire hole (24) is at the same vertical distance from the longitudinal center line of the connecting part (23), the main body (21) and the tip (22) on the same horizontal section.

6. A water-cooled twin-wire single arc welding contact tip structure according to claim 5, characterised in that the wire holes (24) intersect at one end near the tip (22) as the wire holes (24) extend along the longitudinal centre line of the contact tip (2), so that the wire passes through the wire holes (24) and meets at a distance of 15-30mm from the tip (22).

7. The structure of a water-cooled twin-wire single-arc welding contact tip according to claim 6, characterized in that the center distance between the wire holes (24) at one end of the connecting portion (23) has a value of 4.5-4.8 mm.

8. The structure of a water-cooled twin-wire single arc welding contact tip according to claim 7, wherein the center distance between the wire holes (24) at one end of the tip (22) has a value of 1.0-1.4 mm.

9. The structure of the water-cooled twin-wire single arc welding contact nozzle according to claim 8, characterized in that the connecting part (23) is provided with a plurality of tangent planes, and an annular protrusion (25) is arranged between the connecting part (23) and the main body (21).

10. The structure of the water-cooled twin-wire single arc welding contact nozzle according to claim 9, characterized in that a sleeve (26) is further covered, an opening (27) is arranged at one end of the sleeve (26), and an internal thread is arranged on the inner side of one end of the opening (27); a closing-in (28) is arranged at the other end of the sleeve (26), and the inner diameter of the closing-in (28) is the same as the outer diameter of the main body (21).