Welding contact tube
By designing a welded conductive nozzle consisting of conductive nozzles, circular tubes and circular tube heads, the problem of splash adhesion during welding is solved, extending the life of the conductive nozzles and reducing costs.
Patent Information
- Application Number
- CN202510208215.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-04-15
AI Technical Summary
During welding, splashes easily adhere to the wire outlet of the conductive nozzle, affecting the welding effect and shortening the life of the conductive nozzle.
A welded conductive nozzle is designed, which consists of a conductive nozzle, a circular tube and a circular tube head. The design of the circular tube head includes grooves and steps. The circular tube wall is fixed to the circular tube head by extrusion and connected to the conductive nozzle, which increases the heat expansion direction of the conductive nozzle to reduce the heat expansion pressure.
Effectively prevents splash from adhering to the wire outlet, extends the service life of the conductive nozzle and reduces maintenance costs.
Smart Images
Figure FT_1 
Figure FT_2 
Figure FT_3
Abstract
Description
Technical Field
[0001] The invention relates to a welding conductive nozzle and belongs to the technical field of welding devices. Background Art
[0002] In the field of welding, the gas shielded welding conductive nozzle has a through hole in the center (wire inlet and wire outlet), with or without threads at the rear end. The conductive nozzle is mostly made of copper or chrome zirconium copper. The diameter of the through hole is slightly larger than the diameter of the welding wire. The welding wire passes through the through hole to the parent material for welding. The gas shielded welding conductive nozzle is in the middle of the nozzle, and the horizontal distance between the two is very close. The longitudinal distance of the wire outlet is very close to the parent material. The welding wire leaves the wire outlet and welds with the parent material. During welding, the temperature of the molten pool is very high, and there will be a lot of spatter flying out in a V shape. The spatter will fly out and hit the nozzle or other places and will return. It is very easy to stick to the wire outlet of the conductive nozzle, affecting the wire output. There are many specifications and models of welding conductive nozzles, and the welding current varies. Summary of the invention
[0003] The present invention aims to overcome the above-mentioned defects and proposes a welding conductive nozzle to solve the above-mentioned shortcomings.
[0004] The present invention is achieved by adopting the following technical solutions A welding conductive nozzle, characterized in that: a welding conductive nozzle consists of a conductive nozzle, a round tube, and a round tube head, the conductive nozzle is made of materials such as copper or chromium-zirconium copper, the round tube and the round tube head can be made of metal materials, the conductive nozzle has a thread inlet and a thread outlet, an outer thread or a groove is cut on the outer circle of the conductive nozzle, an inner thread or no inner thread is cut on the inner circle of one end of the round tube, which is used for threading or extrusion connection with the conductive nozzle; an inner step is cut on the other end for placing the round tube head, and a groove is cut on the outer circle of the round tube head. Place the round tube head on the inner step at one end of the round tube, with the end face flush with or higher than the end face of the round tube. At the groove position of the round tube head, extrude the round tube wall into the outer circular groove of the round tube head by extrusion. The inner diameters of the round tube and the round tube head are consistent and concentric. Then the round tube is connected to the conductive nozzle by an internal thread or extrusion. The end face of the round tube head is slightly higher than the thread outlet of the conductive nozzle in the longitudinal direction; or the round tube and the round tube head are made of the same material and the two are made into one body, and then one end of the round tube is connected to the conductive nozzle by an internal thread or extrusion. The end face of the other end of the round tube is slightly higher than the thread outlet of the conductive nozzle in the longitudinal direction; or the round tube and the round tube head are made of the same material of the conductive nozzle and the three are made into one body, and the end face of the conductive nozzle is slightly higher than the thread outlet of the conductive nozzle.
[0005] Preferably, in order to reduce the expansion of the conductive nozzle into the central through hole due to heat, the conductive nozzle is opened 2, 4, 6, 8, etc. backwards from the wire outlet according to the requirements of the welding current, so as to increase the thermal expansion direction of the conductive nozzle.
[0006] Preferably, the round tube has internal threads at both ends, or has an internal thread at one end and a step or an internal groove at the other end, or has no internal thread at one end and has a step or an internal groove or an internal thread at the other end.
[0007] Preferably, the round tube head has an external thread at one end of the round tube, or has a step and a groove on the outer circle at one end of the round tube, or has a step and no groove on the outer circle at one end of the round tube, or has a step and an external thread on the outer circle at one end of the round tube.
[0008] Preferably, the round tube and the round tube head can be made of insulating material in one piece or sprayed with insulating material; the conductive nozzle, the round tube and the round tube head can be combined into one piece and sprayed with insulating material.
[0009] Preferably, the round tube head is made of insulating ceramics such as 95 or 99 alumina, modified silicon carbide, boron nitride, silicon nitride, etc.
[0010] Preferably, the round tube is fixed to the round tube head by extrusion, threading, spring extrusion, earless retaining ring, gluing, etc.
[0011] Preferably, the round tube head is higher than the end surface of the round tube.
[0012] The invention has the beneficial effects of preventing splashes from adhering to the wire outlet, thereby greatly increasing the service life of the conductive nozzle and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 : Schematic diagram of the cross-sectional structure of the contact nozzle 1; Figure 2 : Schematic diagram of the cross-sectional structure of the circular tube 5; Figure 3 : Schematic diagram of the cross-sectional structure of the round tube head 9; Figure 4 :Composition (1) Schematic diagram of cross-section structure; Figure 5 :Composition (2) Schematic diagram of cross-section structure; Figure 6 : 3D (1) schematic diagram; Figure 7 : Schematic diagram of the cross-sectional structure of the round tube head 16; Figure 8 , 9 : Schematic diagram of the cross-sectional structure of the circular tube 17; Fig.10 : Composition (3) Schematic diagram of cross-section structure; Fig.11 : Composition (4) cross-sectional structure diagram; Fig.12 : Schematic diagram of the cross-sectional structure of the round tube head 21; Fig.13 : 3D (2) schematic diagram; Fig.14 : Schematic diagram of the circlip; Fig.15 : Schematic diagram of a round tube and a round tube head being combined into one; Fig.16 : Composition (5) Schematic diagram of cross-section structure; Fig.17 : Schematic diagram of the conductive nozzle, round tube and round tube head as one; Fig.18 , 19 : Schematic diagram of the structure of the retaining spring; Fig. 20 : Schematic diagram of the cross-sectional structure of the round tube head 31; Fig.21 : Schematic diagram of the cross-sectional structure of the round tube head 25; Fig. 22 : Schematic diagram of the cross-sectional structure of the circular tube 28; Fig.23 : 3D (3) Schematic diagram of a round tube head without steps; Fig.24 : Schematic diagram of a three-dimensional (4) round tube head with steps; Fig.25 : Composition (6) Schematic diagram of the cross section of a round tube head without steps; Fig.26 : Composition (7) Schematic diagram of the cross section of a circular tube head with steps; Fig. 27 : 3D schematic diagram of the conductive nozzle being split into two or four parts.
[0014] 1: conductive nozzle, 2: through hole of conductive nozzle 1, 3: external thread of conductive nozzle 1, 4: rear thread of conductive nozzle 1, 5: round tube, 6: internal thread of round tube 5, 7: step of round tube 5, 8: step of round tube head 9, 9: round tube head, 10: threaded connection, 11: spring, 12: step of conductive nozzle 1, 13: wire outlet of conductive nozzle 1, 14: end face of round tube head, 15: groove, 16: round tube head, 17: round tube, 18: round Step of tube 17, 19: extrusion point, 20: inner groove, 21: round tube head, 22: round tube and round tube head are combined into one, 23: extrusion place, 24: retaining spring, 25: round tube head, 26: outer thread of round tube head, 27: step of round tube head, 28: round tube, 29: front inner thread of round tube, 30: threaded connection, 31: round tube head, 32: end face of round tube and round tube head are combined into one, 33: end face of conductive nozzle, round tube and round tube head are integrated into one. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solutions and advantages of the present invention more clear, a welding conductive nozzle proposed by the present invention is further described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0016] A welding contact tip, such as Figure 1 , Figure 7 , Figure 8As shown, an external thread 3 is cut on the outer circle of the conductive nozzle 1, an internal thread 6 is provided at one end of the round tube 17, a step 18 is provided inside the round tube 17, and a groove 15 is provided on the outer circle of the round tube head 16. The round tube head 16 is placed on the step 18 at the front of the round tube 17, one end of the round tube head 16 is blocked by the step 18 of the round tube 17, the end face of the other end of the round tube head 16 is flush with the end face of the round tube 17, the groove 15 of the round tube head 16 is aligned with the extrusion point 19 of the round tube 17, and the round tube wall is squeezed into the groove 15 at the extrusion point 23 by point pressing or wheel pressing, etc., and the inner diameters of the round tube 17 and the round tube head 16 are consistent and concentric, and then the internal thread 6 of the round tube 17 is connected and fixed with the external thread 3 of the conductive nozzle 1 at the threaded connection 10, as shown in FIG. Fig.11 The wire outlet 13 of the conductive nozzle 1 is lower than the end surface 14 of the round tube head. Figure 6 shown.
[0017] A welding contact tip, such as Figure 1 , Figure 8 , Fig.12 As shown, an external thread 3 is cut on the outer circle of the conductive nozzle 1, an internal thread 6 is provided at one end of the round tube 17, a step 18 is provided inside the round tube 17, and a groove 15 is provided on the outer circle of the round tube head 21. The end of the round tube head 21 without the step is placed on the step 18 at the front of the round tube 17, and the end of the round tube head 21 without the step is blocked by the step 18 of the round tube 17. The inner diameters of the round tube 17 and the round tube head 21 are consistent and concentric, and the step at the other end of the round tube head 21 is placed on the end face of the end without the thread of the round tube 17. The end face of the round tube head 21 with the step is higher than the end face of the end without the thread of the round tube 17. The groove 15 of the round tube head 21 is aligned with the extrusion point 19, and the round tube wall is squeezed into the groove 15 at the extrusion point 23 by point pressing or wheel pressing, and then the internal thread 6 of the round tube 17 is connected and fixed with the external thread 3 of the conductive nozzle 1 at the threaded connection 10, as shown in FIG. Fig.10 The wire outlet 13 of the conductive nozzle 1 is lower than the end surface 14 of the round tube head. Fig.13 shown.
[0018] A welding contact tip, such as Figure 1 , Figure 7 , Fig. 9 , Fig.12 , Fig.14 As shown, the outer circumference of the conductive nozzle 1 is cut with an external thread 3, one end of the round tube 17 is provided with an internal thread 6, the inner surface of the round tube 17 is provided with a step 18 and an inner groove 20, and the outer circumference of the round tube heads 16 and 21 is provided with a groove 15. Fig.14 The retaining spring 24 is pressed into the groove 15 of the round tube head 16 or 21, and inserted from the non-threaded end of the round tube 17 to the inner groove 20 of the round tube 17. The retaining spring 24 expands and is fixed, and then the inner thread 6 of the round tube 17 is connected and fixed with the outer thread 3 of the conductive nozzle 1 at the threaded connection 10. Fig.18 , 19 shown.
[0019] A welding contact tip, such as Figure 1 , Fig.15 , Fig.16 , Fig.17 As shown, the outer circle of the conductive tip 1 is cut with an external thread 3, one end of the round tube 22 is provided with an internal thread 6, which is made of the same material as the round tube head, and the two are made into one body, the internal thread 6 of the round tube 22 is connected and fixed with the external thread 3 of the conductive tip 1 at the threaded connection 10, and the thread outlet 13 of the conductive tip 1 is lower than the end face 32 of the round tube 22. Alternatively, the round tube, the round tube head, and the conductive tip 1 are made of materials that are made into one body, and the thread outlet 13 of the conductive tip 1 is lower than the end face 33 of the conductive tip 1.
[0020] A welding contact tip, such as Figure 1 , Fig. 20 , Fig. 22 As shown, the outer thread 26 of the round tube head 31 is connected to the inner thread 29 of the round tube 28 at the threaded connection 30, the round tube head 31 is higher than the end surface of the round tube 28, and then the inner thread 6 of the round tube 28 is connected and fixed to the outer thread 3 of the conductive nozzle 1 at the connection 10, as shown in FIG. Fig.23 , 25 shown.
[0021] A welding contact tip, such as Figure 1 , Fig.21 , Fig. 22 As shown, the outer thread 26 of the round tube head 25 is connected to the inner thread 29 of the round tube 28, the step 27 of the round tube head 25 is in contact with the front end surface of the inner thread 29 of the round tube 28, the outer circle of the step 27 of the round tube head 25 is the same as the outer circle of the round tube 28, and then the inner thread 6 of the round tube 28 is connected and fixed to the outer thread 3 of the conductive nozzle 1 at the connection 10, as shown in FIG. Fig.24 , 26 shown.
[0022] A welding contact tip, such as Figure 1 , Figure 2 , Figure 3 As shown, the outer circle of the conductive nozzle 1 is cut with an external thread 3, one end of the round tube 5 is provided with an internal thread 6, a step 7 is provided inside the round tube 5, and one end of the round tube head 9 is provided with a step 8. The round tube head 9 is inserted into the round tube 5, the step 8 of the round tube head 9 is blocked by the step 7 of the round tube 5, and the end face of the round tube head 9 without the step is flush with the end face of the round tube 5, and then the internal thread 6 of the round tube 5 is connected and fixed with the external thread 3 of the conductive nozzle 1 at the threaded connection 10, and the round tube head 9 is squeezed by the conductive nozzle step 12, as shown in FIG. Figure 4 Or insert the round tube head 9 into the round tube 5, the step 8 of the round tube head 9 is blocked by the step 7 of the round tube 5, the end face of the round tube head 9 without the step is flush with the end face of the round tube 5, and then insert the spring 11, and then connect and fix the internal thread 6 of the round tube 5 and the external thread 3 of the conductive nozzle 1 at the threaded connection 10, and use the spring 11 to squeeze the round tube head 9, as shown. Figure 5The wire outlet 13 of the conductive nozzle 1 is lower than the end surface 14 of the round tube head. Figure 6 shown.
[0023] A welding conductive nozzle, in order to reduce the conductive nozzle 1 from being heated and expanding into the central through hole, 2, 4, 6, 8 bends are opened from the wire outlet, etc. Fig. 27 It is a three-dimensional schematic diagram of two-fold and four-fold, and the heat expansion direction of the conductive tip is added. The length and number of the folds are determined according to the specifications and models of the conductive tip and the size of the welding current. The folded conductive tip and the conductive tip 1 of the specific implementation scheme are interchangeable and replaceable.
[0024] A welding conductive nozzle. In order to reduce the adhesion of spatter to a round tube head, the round tube head can be made of insulating material or sprayed with anti-splash material, or made of insulating ceramics such as 95 or 99 alumina, modified silicon carbide, boron nitride, silicon nitride, etc. The round tube head and the round tube head of the specific implementation plan can be interchangeable and replaceable.
[0025] The above description is only a preferred specific embodiment of the present invention. Since the conductive nozzle is widely used and has many specifications and models, the protection scope of the present invention is not limited thereto. Any modification, equivalent replacement, interchange, improvement, etc. made to the welding conductive nozzle by any technician familiar with the technical field within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A welding contact tip, characterized in that: It consists of a conductive nozzle, a round tube and a round tube head. One end of the round tube is connected to the round tube head, and the other end is connected to the conductive nozzle.
2. A welding contact tip according to claim 1, characterized in that: The conductive nozzle has 2, 4, 6, 8 bends, etc.
3. A welding contact tip according to claim 1, characterized in that: The round tube head is made of insulating ceramics such as 95 or 99 alumina, modified silicon carbide, boron nitride, silicon nitride, etc., or insulating materials, or sprayed with anti-splashing materials.
4. A welding contact tip according to claims 1, 2 and 3, characterized in that: The end surface of the circular tube head is flush with the end surface of the circular tube, or higher than the end surface of the circular tube.
5. A welding contact tip according to claim 1, 2, 3, 4, characterized in that: The round tube and the round tube head are made in one piece, or the conductive nozzle, the round tube and the round tube head are made in one piece.
6. A welding contact tip according to claim 1, 2, 3, 4, 5, characterized in that: The wire outlet of the conductive nozzle is lower than the end face of the round tube head, or lower than the end face of the round tube, or lower than the end face of the conductive nozzle.