Conductive nozzle

Abstract

The contact tube comprises a connecting part and a conductive part, the connecting part is of a cylindrical structure, a containing channel used for containing the conductive part is formed in the connecting part, one end of the connecting part is connected with a welding gun through an outer side external thread, and the other end of the connecting part is connected with the conductive part through an inner side internal thread; the conductive part is provided with a welding wire channel penetrating through the left end and the right end of the conductive part, and the conductive part comprises a threaded section, a straight barrel section and a frustum section which are sequentially arranged from right to left; the threaded section is used for being in threaded connection with an internal thread of a connecting part, the straight barrel section and the frustum section are installed in the containing channel, and the straight barrel section is in clearance fit with the containing channel; first chip removal holes communicated with the welding wire channel are symmetrically formed in the side wall of the frustum section; and the connecting part is provided with a second chip removal hole penetrating through the side wall of the connecting part corresponding to the first chip removal hole. The scrap collecting device has the advantages of being simple in structure, convenient to observe the scrap accumulation condition, convenient to clean scraps and high in use efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and in particular relates to a conductive nozzle. Background Art

[0002] Automatic welding equipment mainly consists of welding power source, wire feeder and its control and debugging system, welding head and its mobile structure, welding moving or shifting mechanism, main controller, welding robot, auxiliary device, etc. The welding head device is mainly composed of nozzle, conductive nozzle, diverter, conduit cable and other parts.

[0003] The welding guns of robot automatic welding all have copper conductive nozzles at the end. The conductive nozzles output welding wire in a directional manner and play a conductive role. They are used frequently and in huge quantities. As a key part of the welding gun, the quality and stability of the conductive nozzle directly affect the quality of welding and the efficiency of welding production. In long-term operation, the welding wire contacts the wire feed wheel and the inner wall of the wire feed tube to produce dust and powder impurities. When the welding wire enters the conductive nozzle, it contacts the sharp edges and corners at the end of the hole to produce powder impurities. The powder impurities on the welding wire can easily cause the conductive nozzle to be blocked, affecting the continuity of the welding process. The accumulation of metal debris caused by the friction between the welding wire and the conductive nozzle often causes the inner diameter of the conductive nozzle to become smaller, resulting in squeezing with the welding wire, resulting in poor wire feeding, or even ineffective wire feeding. The above problem is one of the key factors affecting weld quality and production efficiency.

[0004] A Chinese patent document discloses "a conductive nozzle" (publication number CN215509416U, publication date January 14, 2022). This technology discloses a conductive nozzle, which belongs to the field of welding technology, including a connecting part and a conductive part. The upper end of the connecting part is used to connect to the welding gun; a through-accommodation channel is provided in the connecting part; the upper end of the conductive part extends from the lower end of the connecting part into the accommodating channel and is connected to the connecting part; a through hole is provided on the conductive part for the welding wire to pass through, and the upper end opening of the through hole is an arc structure; the outer side surface of the upper end of the conductive part is a conical surface with a small top and a large bottom, and a chip space for accommodating debris is formed between the conical surface and the accommodating channel. A chip space for accommodating debris is formed between the conical surface and the accommodating channel of this technology. However, the chip space is limited. In long-term operation, since the chip space is a closed space, the accumulation of debris cannot be directly observed, and the chip space will be full of debris. It is necessary to frequently disassemble the connecting part to clean up the accumulated debris in the chip space, thereby affecting work efficiency. Therefore, this technology has the problems of being inconvenient to observe the accumulation of debris, being inconvenient to clean up the debris and affecting work efficiency. Utility Model Content

[0005] The utility model aims to provide a conductive nozzle with a simple structure, convenient for observing the accumulation of debris, convenient for cleaning the debris and high use efficiency in view of the deficiencies in the prior art.

[0006] The technical purpose of the utility model is achieved through the following technical solutions:

[0007] A conductive nozzle comprises a connecting part and a conductive part, wherein the connecting part is a cylindrical structure, and the interior of the connecting part is a receiving channel for receiving the conductive part, one end of the connecting part is connected to the welding gun through an outer external thread, and the other end of the connecting part is connected to the conductive part through an inner internal thread; the conductive part is provided with welding wire channels running through its left and right ends, and the conductive part comprises a threaded section, a straight tube section and a frustum section arranged in sequence from right to left; the threaded section is used for threaded connection with the internal thread of the connecting part, the straight tube section and the frustum section are installed in the receiving channel, and the straight tube section and the receiving channel are clearance-fitted; the side wall of the frustum section is symmetrically provided with a first chip removal hole connected to the welding wire channel; the connecting part is provided with a second chip removal hole running through its side wall corresponding to the first chip removal hole.

[0008] The first chip removal holes are composed of a frustum-cone-section chip removal hole arranged in the frustum-cone section and a straight-tube-section chip removal hole arranged in the straight-tube section.

[0009] The width of the first chip removal hole is larger than the diameter of the welding wire passage and smaller than the diameter of the accommodating passage.

[0010] The width of the first chip removal hole is less than half of the diameter of the accommodating channel.

[0011] The first chip removal hole has a bullet shape.

[0012] The frustum section chip removal hole of the first chip removal hole is in a pointed arch shape, and the straight tube section chip removal hole of the first chip removal hole is in a square shape.

[0013] The outer contour of the second chip removal hole is the same as the outer contour of the first chip removal hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model includes a connecting part and a conductive part. The connecting part is a cylindrical structure, and its interior is a receiving channel for receiving the conductive part. One end of the connecting part is connected to the welding gun through an outer external thread, and the other end is connected to the conductive part through an inner internal thread. The conductive part is provided with a welding wire channel running through its left and right ends. The conductive part includes a threaded section, a straight section and a frustum section arranged in sequence from right to left. The threaded section is used to be threadedly connected with the internal thread of the connecting part. The straight section and the frustum section are installed in the receiving channel, and there is a clearance fit between the straight section and the receiving channel. The side wall of the frustum section is symmetrically provided with a first chip removal hole connected to the welding wire channel. The connecting part is provided with a second chip removal hole running through its side wall corresponding to the first chip removal hole. By providing the second chip removal hole, the chip space for receiving debris formed between the frustum section and the receiving channel in the prior art is opened up. At the same time, the first chip removal hole is used to collect debris, and the accumulated debris can be cleaned up through the second chip removal hole communicating with the chip space and the first chip removal hole. In actual use, the accumulation of debris can be directly observed through the second chip discharge hole, and the accumulated debris can be quickly cleaned up. In the process of using the welding gun, there will be some shaking, and the accumulated debris can be discharged through the second chip discharge hole. When there is too much accumulation, it can also be quickly cleaned up through the cleaning tool. With this technical measure, the accumulation of debris can be observed at any time without disassembling the connection part for inspection. At the same time, the debris can be discharged during the use of the welding gun without stopping to clean it. The continuous operation of the entire automatic welding wire feeding mechanism can be effectively guaranteed, and the use efficiency can be effectively guaranteed. The utility model has the advantages of simple structure, easy observation of debris accumulation, easy cleaning of debris, and high use efficiency.

[0016] 2. The first chip removal hole of the utility model is composed of a frustum-section chip removal hole arranged in the frustum section and a straight-section chip removal hole arranged in the straight-section. In actual use, the chip removal capacity of the chip removal hole is proportional to the surface area of ​​the chip removal hole. Under the condition that the connecting part and the conductive part can work effectively, the surface areas of the first chip removal hole and the second chip removal hole can be effectively increased by setting the frustum-section chip removal hole and the straight-section chip removal hole, thereby improving the chip removal capacity of the first chip removal hole and the second chip removal hole.

[0017] 3. The first chip removal hole of the utility model has a bullet shape. Specifically, the first chip removal hole of the cone section is a pointed arch, and the first chip removal hole of the straight tube section is a square. This technical measure is adopted to facilitate the collection and cleaning of debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly drawing of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the utility model;

[0020] Figure 3 yes Figure 2Middle AA section view;

[0021] Reference numerals: 1—connecting portion; 11—accommodating channel; 12—second chip discharge hole;

[0022] 2—conductive part; 21—threaded section; 22—straight section; 23—cone section; 24—wire channel; 25—first chip removal hole; 251—cone section chip removal hole; 252—straight section chip removal hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1 — Figure 3As shown, a conductive nozzle includes a connecting portion 1 and a conductive portion 2. The connecting portion 1 is a cylindrical structure, and its interior is a receiving channel 11 for receiving the conductive portion 2. One end of the connecting portion 1 is connected to the welding gun through an outer external thread, and the other end is connected to the conductive portion 2 through an inner internal thread. The conductive portion 2 is provided with a welding wire channel 24 running through its left and right ends. The conductive portion 2 includes a threaded section 21, a straight section 22, and a frustum section 23 arranged in sequence from right to left. The threaded section 21 is used for threaded connection with the internal thread of the connecting portion 1. The straight section 22 and the frustum section 23 are installed in the receiving channel 11, and the straight section 22 and the receiving channel 11 are gap-matched. The side wall of the frustum section 23 is symmetrically provided with a first chip removal hole 25 connected to the welding wire channel 24. The connecting portion 1 is provided with a second chip removal hole 12 running through its side wall corresponding to the first chip removal hole 25. By providing the second chip removal hole 12, the chip holding space for accommodating debris formed between the frustum section 23 and the receiving channel 11 in the prior art is opened up. At the same time, the first chip removal hole 25 is used to collect debris, and the accumulated debris can be cleaned up through the second chip removal hole 12 that is in communication with the chip space and the first chip removal hole 25. In actual use, the accumulation of debris can be directly observed through the second chip removal hole 12, and the accumulated debris can be quickly cleaned up. During the use of the welding gun, there will be some shaking, and the accumulated debris can be discharged through the second chip removal hole 12. When there is too much accumulation, it can also be quickly cleaned up through a cleaning tool. By adopting this technical measure, the accumulation of debris can be observed at any time without disassembling the connecting part 1 for inspection. At the same time, the debris can be discharged during the use of the welding gun without stopping to clean it, which can effectively ensure the continuous operation of the entire automatic welding wire feeding mechanism and can effectively ensure the use efficiency. The utility model has the advantages of simple structure, easy observation of debris accumulation, easy cleaning of debris and high use efficiency.

[0027] like Figure 1 — Figure 3 As shown, the outer contour of the second chip removal hole 12 is the same as the outer contour of the first chip removal hole 25. In actual use, the second chip removal hole 12 provided on the connecting portion 1 corresponding to the first chip removal hole 25 has the same shape and size as the first chip removal hole 25. Among them, the outer contour of the second chip removal hole 12 cannot be smaller than the outer contour of the first chip removal hole 25, and it is generally the same as the outer contour of the first chip removal hole 25. In order to increase the chip removal capacity, it can also be larger than the outer contour of the first chip removal hole 25.

[0028] like Figure 1 — Figure 3 As shown, the connecting part 1 is a cylindrical structure, and its interior is a circular accommodating channel 11 for accommodating the conductive part 2. The outer surface of the left end of the connecting part 1 is provided with an external thread, and the inner surface of the right end is provided with an internal thread; the left end of the connecting part 1 is threadedly connected to the welding gun through the external thread, and the right end is threadedly connected to the conductive part 2 through the internal thread.

[0029] The conductive part 2 is provided with a welding wire channel 24 running through its left and right ends. In actual use, grooves can be provided at both ends of the welding wire channel 24, and its shape can be a frustum or the like. The conductive part 2 includes a threaded section 21, a straight section 22 and a frustum section 23 arranged in sequence from right to left. Among them, the straight section 22 and the accommodating channel 11 have a clearance fit structure. When the threaded section 21 of the conductive part 2 is threadedly connected with the internal thread of the connecting part 1, the straight section 22 and the frustum section 23 both enter the accommodating channel 11 of the connecting part 1. The side wall of the frustum section 23 is symmetrically provided with a first chip removal hole 25 connected to the welding wire channel 24; the connecting part 1 is provided with a second chip removal hole 12 running through its side wall corresponding to the first chip removal hole 25. In use, when the welding wire enters from the right side of the welding wire channel 24, the debris generated by the friction between the welding wire and the welding wire channel 24 will be brought into the first chip removal hole 25, and then discharged through the second chip removal hole 12. The debris generated on the left side of the welding wire channel 24 is discharged from the second chip discharge hole 12 along the outer surface of the frustum section 23. The technical measure has the advantages of simple structure, convenient observation of debris accumulation, convenient cleaning of debris and high use efficiency.

[0030] like Figure 1 , Figure 3 As shown, the first chip removal hole 25 is composed of a frustum-section chip removal hole 251 provided in the frustum-section 23 and a straight-section chip removal hole 252 provided in the straight-section 22. In actual use, the chip removal capacity of the chip removal hole is proportional to the surface area of ​​the chip removal hole. Under the condition that the connecting portion 1 and the conductive portion 2 can work effectively, the surface areas of the first chip removal hole 25 and the second chip removal hole 12 can be effectively increased by providing the frustum-section chip removal hole 251 and the straight-section chip removal hole 252, thereby improving the chip removal capacity of the first chip removal hole 25 and the second chip removal hole 12.

[0031] The width of the first chip removal hole 25 is greater than the diameter of the welding wire channel 24 and less than the diameter of the receiving channel 11. In order to facilitate the discharge of debris from the welding wire channel 24, the width of the first chip removal hole 25 needs to be greater than the diameter of the welding wire channel 24. At the same time, it is necessary to ensure the structural stability of the frustum section 23, so the width of the first chip removal hole 25 is less than the diameter of the receiving channel 11. In actual use, the width of the first chip removal hole 25 is less than half of the diameter of the receiving channel 11.

[0032] like Figure 1As shown, the first chip removal hole 25 has a bullet shape. Specifically, the frustum section chip removal hole 251 of the first chip removal hole 25 is a pointed arch, and the straight section chip removal hole 252 of the first chip removal hole 25 is a square. In actual use, the shape of the first chip removal hole 25 can be a square, circular or other structure. If the shape of the first chip removal hole 25 is circular, its lowest point is an arc surface, which may cause debris to accumulate at the lowest point. If accumulation occurs, the surface of the accumulation point will be relatively small, which will affect the subsequent discharge of the debris. The discharge directions of the debris and dust of the welding wire are one perpendicular to the first chip removal hole 25 and the other parallel to the first chip removal hole 25. If it is perpendicular to the first chip discharge hole 25, it will be discharged directly through the first chip discharge hole 25. However, parallel to the first chip discharge hole 25, the frustum section chip discharge hole 251 of the first chip discharge hole 25 is in a pointed arch shape, and its overall arc surface collects the wire debris and dust to the lowest point, that is, to the square straight section chip discharge hole 252. The straight section chip discharge hole 252 plays a storage role. The adoption of this technical measure is convenient for collecting and cleaning debris.

[0033] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A conductive nozzle, comprising a connecting portion and a conductive portion, characterized in that: The connecting part is a cylindrical structure, the interior of which is a receiving channel for receiving the conductive part, one end of the connecting part is connected to the welding gun through an outer external thread, and the other end is connected to the conductive part through an inner internal thread; the conductive part is provided with welding wire channels running through its left and right ends, and the conductive part includes a threaded section, a straight section and a frustum section arranged in sequence from right to left; the threaded section is used for threaded connection with the internal thread of the connecting part, the straight section and the frustum section are installed in the receiving channel, and the straight section and the receiving channel are clearance-fitted; the side wall of the frustum section is symmetrically provided with a first chip removal hole connected to the welding wire channel; the connecting part is provided with a second chip removal hole running through its side wall corresponding to the first chip removal hole.

2. The conductive nozzle according to claim 1, characterized in that: The first chip removal holes are composed of a frustum-cone-section chip removal hole arranged in the frustum-cone section and a straight-tube-section chip removal hole arranged in the straight-tube section.

3. The conductive tip according to claim 1 or 2, characterized in that: The width of the first chip removal hole is larger than the diameter of the welding wire passage and smaller than the diameter of the accommodating passage.

4. The conductive tip according to claim 3, characterized in that: The width of the first chip removal hole is less than half of the diameter of the accommodating channel.

5. The conductive tip according to claim 2, characterized in that: The first chip removal hole has a bullet shape.

6. The conductive tip according to claim 5, characterized in that: The frustum section chip removal hole of the first chip removal hole is in a pointed arch shape, and the straight tube section chip removal hole of the first chip removal hole is in a square shape.

7. The conductive tip according to claim 1, characterized in that: The outer contour of the second chip removal hole is the same as the outer contour of the first chip removal hole.

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