Welding nozzle device for narrow gap welding
By separating the wire feeding and air blowing mechanisms and introducing a distributor and insulating tube into the welding nozzle device, the problem that traditional welding nozzle devices cannot be inserted into narrow gaps is solved, achieving stable welding and high-quality weld formation, and improving the applicability and safety of narrow gap welding.
Patent Information
- Application Number
- CN202520046863.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Traditional welding nozzle devices have wire feeding and air blowing at the same end, resulting in a larger size at one end of the device, which cannot be effectively inserted into narrow gaps, thus reducing the applicability of welding.
A welding nozzle device was designed, in which the wire feeding mechanism and the air blowing mechanism are separated, the wire feeding channel and the air blowing channel are separated, the protective gas is independently delivered by the connecting rod and the side blowing mechanism, the gas is evenly dispersed by the distributor, and an insulating tube is set outside the wire feeding nozzle to prevent the conductive nozzle from arcing and being damaged.
It improves the applicability of the welding nozzle device in narrow gap welding, ensures welding stability and uniform distribution of shielding gas, enhances weld formation quality, and prevents damage to the contact nozzle.
Smart Images
Figure CN223670506U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to welding equipment technical field, especially relate to a welding nozzle device for narrow gap welding. BACKGROUND
[0002] MIG welding (melt inert-gas welding is translated as melting electrode inert gas protection welding), using melting electrode, with additional gas as arc medium, and the arc welding method of protecting metal droplet, welding pool and welding area high temperature metal is called melting electrode gas protection arc welding. And narrow gap welding has wide application in the field such as shipbuilding, oil and gas pipeline construction, energy industry, aerospace industry, automobile manufacturing and bridge construction.
[0003] However, limited by the structural design of the traditional welding nozzle device, leading to wire feeding and blowing at the same end, causing the size of one end of the nozzle device to be larger, unable to be effectively inserted into the narrow gap, further leading to the traditional welding nozzle device unable to effectively meet the welding of narrow gap, reducing the applicability of the welding nozzle device. UTILITY MODEL CONTENT
[0004] Based on the above background, the purpose of the utility model is to provide a welding nozzle device for narrow gap welding, which can effectively meet the welding of narrow gap and improve the applicability of welding.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A welding nozzle device for narrow gap welding, comprising: a connecting rod having a wire feeding channel therein, and a gas hole on the side surface thereof; a wire feeding mechanism comprising a conductive nozzle and a wire feeding nozzle in communication with the conductive nozzle, the end of the conductive nozzle away from the wire feeding nozzle is connected to one end of the connecting rod and in communication with the wire feeding channel; a side blowing mechanism located outside the wire feeding mechanism, comprising a gas cover and a blowing nozzle in communication with the gas cover, the gas cover is sleeved on the outside of the connecting rod, and the blowing nozzle is in communication with the gas hole through the gas cover.
[0007] Further, the side blowing mechanism further comprises a flow divider, the flow divider is sleeved on the outside of the connecting rod and covers the gas hole on the connecting rod, a plurality of flow holes are provided on the side surface of the flow divider, the gas cover is sleeved on the outside of the flow divider and forms a gas cavity in communication with the flow holes between the flow divider and the gas cover, and the blowing nozzle is in communication with the gas cavity.
[0008] Further, the gas cover comprises a first shell and a second shell, the first shell and the second shell are respectively covered on both sides of the flow divider and are connected to each other, the first shell, the second shell and the flow divider form the gas cavity, and the blowing nozzle is in communication with the first shell.
[0009] Further, the first shell comprises a first body part and a first flange surrounding the edge of the first body part, the second shell comprises a second body part and a second flange surrounding the edge of the second body part, the first body part and the second body part are respectively covered on both sides of the flow divider to form the air cavity, and the first flange and the second flange are bolted.
[0010] Further, the side blowing mechanism further comprises a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are spaced and sleeved outside the flow divider, the first sealing ring and the second sealing ring are respectively correspondingly abutted to the inner side of the air cover towards the flow divider, and are respectively located on both sides of the air cavity.
[0011] Further, the side blowing mechanism further comprises a third sealing ring, the bottom of the flow divider is provided with a through hole, one end of the connecting rod penetrates out of the through hole, and the third sealing ring is arranged between the hole wall of the through hole and the connecting rod.
[0012] Further, the blowing nozzle comprises a first pipe segment and a second pipe segment which are in communication with each other, the first pipe segment is in communication with the air cover, and the first pipe segment and the second pipe segment are arranged at an included angle.
[0013] Further, the wire feeding mechanism further comprises an insulating pipe, and the insulating pipe is arranged outside the wire feeding nozzle.
[0014] The utility model has the following beneficial effects:
[0015] (1) in the welding process, the wire feeding channel of the connecting rod is used to send the welding wire into the conductive nozzle, and the welding wire is conveyed to the gap to be welded from the wire feeding nozzle for welding. At the same time, the wire feeding channel and the air hole of the connecting rod are used to send the protective gas into the air cover, and the protective gas is blown to the gap through the blowing nozzle, so that the welding is stably carried out. Since the side blowing mechanism is located on the outside of the wire feeding mechanism, and the blowing nozzle is communicated with the air hole of the connecting rod through the air cover, the blowing nozzle is separated from the wire feeding nozzle, and the size of one end of the wire feeding mechanism is reduced, so that the blowing nozzle can blow the protective gas into the gap alone during the welding process, and the welding nozzle device can be suitable for welding in narrow gaps, and the applicability of the welding nozzle device is improved.
[0016] (2) the flow divider is introduced, the protective gas in the air hole can be uniformly dispersed into the air cover, so that the protective gas can flow into the blowing nozzle uniformly, and the forming quality of the weld is improved.
[0017] (3) the first sealing ring and the second sealing ring are arranged on two sides of the air cavity respectively, the first sealing ring and the second sealing ring are used for improving the closed environment of the air cavity, improving the air tightness of the nozzle device, and ensuring that the protective gas stably enters the blowing nozzle.
[0018] (4) the insulating pipe is arranged outside the wire feeding nozzle, the wire feeding nozzle is insulated and protected, the risk that the conductive nozzle arcs outward and the conductive nozzle melts itself when narrow-gap welding is avoided, and meanwhile, the insulating pipe arranged outside the wire feeding nozzle can also avoid damage to the blowing nozzle caused by spatter or high temperature during welding. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.
[0020] Figure 1 The structure diagram of the nozzle device described in one embodiment is shown in the figure.
[0021] Figure 2 The structure sectional view of the nozzle device described in one embodiment is shown in the figure.
[0022] Explanation of reference numerals:
[0023] 100, nozzle device; 10, connecting rod; 11, wire feeding channel; 12, air hole; 13, first sealing ring; 14, second sealing ring; 15, third sealing ring; 20, wire feeding mechanism; 21, conductive nozzle; 22, wire feeding nozzle; 23, insulating pipe; 30, side blowing mechanism; 32, blowing nozzle; 321, first pipe section; 322, second pipe section; 33, air cover; 331, first shell; 33a, first main body part; 33b, first flange; 332, second shell; 33c, second main body part; 33d, second flange; 34, flow divider; 341, flow dividing hole; 342, through hole; 343, air cavity.
[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0025] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.
[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0027] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.
[0028] In one embodiment, please refer to Figure 1 With Figure 2 The present application provides a welding nozzle device for narrow gap welding, comprising: a connecting rod 10, having a wire feeding channel 11 inside, and a gas passage hole 12 on the side surface thereof; a wire feeding mechanism 20, comprising a conductive nozzle 21 and a wire feeding nozzle 22 in communication with the conductive nozzle 21, the end of the conductive nozzle 21 away from the wire feeding nozzle 22 is connected with one end of the connecting rod 10, and is in communication with the wire feeding channel 11; a side blowing mechanism 30 located outside the wire feeding mechanism 20, and comprising a gas cover 33 and a blowing nozzle 32 in communication with the gas cover 33, the gas cover 33 is sleeved on the outside of the connecting rod 10, and the blowing nozzle 32 is in communication with the gas passage hole 12 through the gas cover 33.
[0029] The nozzle device 100 described above, in the welding process, the wire is sent into the conducting nozzle 21 through the wire feeding channel 11 of the connecting rod 10, and is delivered to the gap to be welded through the wire feeding nozzle 22. At the same time, the protective gas is sent into the air cover 33 through the wire feeding channel 11 and the air hole 12 of the connecting rod 10, and is blown into the gap through the air blowing nozzle 32, so that the welding is stably carried out. Since the side blowing mechanism 30 is located outside the wire feeding mechanism 20, and the air blowing nozzle 32 is communicated with the air hole 12 of the connecting rod 10 through the air cover 33, the air blowing nozzle 32 is separated from the wire feeding nozzle 22, the size of one end of the wire feeding mechanism 20 is reduced, and the air blowing nozzle 32 can blow the protective gas into the gap alone during the welding process, so that the nozzle device can be applied to the welding of narrow gap, and the applicability of the nozzle device is improved.
[0030] It should be noted that the nozzle device of the embodiment can be applied to the melt inert-gas welding (MIG for short), and when the gap welding is narrow, for example, the width of the gap is 6mm, the wire feeding nozzle 22 can be inserted into the gap, so that the molten wire can be fed into the gap; at the same time, the air blowing nozzle 32 can be inserted into the gap from one side of the wire feeding nozzle 22, so as to provide a protective gas environment for the welding of the gap.
[0031] Alternatively, the connection between the wire feeding nozzle 22 and the connecting rod 10 can be in various forms, such as but not limited to bolt connection, clamping, threaded sleeve connection, welding and the like.
[0032] In addition, in order to further facilitate the better insertion of the air blowing nozzle 32 into the gap, one end of the air blowing nozzle 32 can be designed as a flat structure, for example, one end of the air blowing nozzle 32 is a square flat shape.
[0033] Further, referring to Figure 2 , the side blowing mechanism 30 further comprises a flow divider 34, the flow divider 34 is sleeved outside the connecting rod 10 and covers the air hole 12 on the connecting rod 10, a plurality of flow holes 341 are arranged on the side surface of the flow divider 34, the air cover 33 is sleeved outside the flow divider 34, and the air cover 33 and the flow divider 34 form an air cavity 343 which is communicated with the flow holes 341, and the air blowing nozzle 32 is communicated with the air cavity 343. It can be known that the introduction of the flow divider 34 can uniformly disperse the protective gas in the air hole 12 into the air cover 33, so that the protective gas can flow into the air blowing nozzle 32 uniformly, which is beneficial to improve the forming quality of the weld.
[0034] Specifically, when the flow divider 34 is sleeved outside the connecting rod 10, the flow divider 34 can be fixed with the connecting rod 10 through threaded connection, for example, the flow divider 34 is provided with internal threads, and the connecting rod 10 is provided with external threads.
[0035] Further, the air cover 33 comprises a first shell 331 and a second shell 332, the first shell 331 and the second shell 332 are respectively arranged on two sides of the flow divider 34 and are connected to each other, the first shell 331, the second shell 332 and the flow divider 34 form the air cavity 343, and the air blowing nozzle 32 is communicated with the first shell 331. It can be known that the air cover 33 is designed as the first shell 331 and the second shell 332, which facilitates the fixed installation of the air cover 33 on the flow divider 34 and improves the convenience of assembly.
[0036] The connection mode between the first shell 331 and the second shell 332 can be, but is not limited to, clamping, bolt connection, pin connection, riveting and the like.
[0037] In an embodiment, referring to Figure 1 The first shell 331 comprises a first main body part 33a and a first flange 33b arranged around the edge of the first main body part 33a, and the second shell 332 comprises a second main body part 33c and a second flange 33d arranged around the edge of the second main body part 33c, the first main body part 33a and the second main body part 33c are respectively arranged on two sides of the flow divider 34 to form the air cavity 343, and the first flange 33b and the second flange 33d are bolted. It can be known that the bolted connection of the first flange 33b and the second flange 33d enables the air cover 33 to be stably fixed on the flow divider 34, which is conducive to improving the air tightness of the structure.
[0038] In an embodiment, referring to Figure 2 The side blowing mechanism 30 further comprises a first sealing ring 13 and a second sealing ring 14, the first sealing ring 13 and the second sealing ring 14 are spaced apart and sleeved on the outside of the flow divider 34, the first sealing ring 13 and the second sealing ring 14 are respectively correspondingly abutted on the inner side of the air cover 33 towards the flow divider 34, and are respectively located on two sides of the air cavity 343. It can be known that the first sealing ring 13 and the second sealing ring 14 are respectively arranged on two sides of the air cavity 343, and the first sealing ring 13 and the second sealing ring 14 are used to improve the closed environment of the air cavity 343, improve the air tightness of the nozzle device 100, and ensure that the protective gas stably enters the air blowing nozzle 32.
[0039] The first sealing ring 13 and the second sealing ring 14 can both be rubber sealing rings.
[0040] In an embodiment, referring to Figure 2The side blowing mechanism 30 further comprises a third sealing ring 15, the bottom of the flow divider 34 is provided with a through hole 342, one end of the connecting rod 10 penetrates out of the through hole 342, and the third sealing ring 15 is arranged between the hole wall of the through hole 342 and the connecting rod 10. In this way, the sealing property between the flow divider 34 and the connecting rod 10 is improved through the third sealing ring 15, and leakage of the protective gas from the gap between the flow divider 34 and the connecting rod 10 is avoided.
[0041] In the third sealing ring 15, the third sealing ring 15 can be a rubber sealing ring.
[0042] In one embodiment, referring to Figure 1 The blowing nozzle 32 comprises a first pipe section 321 and a second pipe section 322 which are in communication with each other, the first pipe section 321 is in communication with the air cover 33, and the first pipe section 321 and the second pipe section 322 are arranged at an angle. In this way, the second pipe section 322 facilitates blowing of the gap.
[0043] It should be explained that the blowing nozzle 32 of different lengths can be designed according to the thickness of the thick plate, and the length of the first pipe section 322 and the angle between the first pipe section 321 and the second pipe section 322 are correspondingly modified, so as to adapt to more application scenarios.
[0044] In one embodiment, referring to Figure 2 The wire feeding mechanism 20 further comprises an insulating pipe 23 which is arranged outside the wire feeding nozzle 22. It can be known that the insulating pipe 23 is arranged outside the wire feeding nozzle 22 to insulate and protect the wire feeding nozzle 22, so as to avoid the risk of external arc of the conductive nozzle 21 in narrow gap welding and melting of the conductive nozzle 21 itself. At the same time, the insulating pipe 23 arranged outside the wire feeding nozzle 22 can also avoid damage to the blowing nozzle 32 caused by spatter or high temperature during welding.
[0045] It should be explained that the insulating pipe 23 can be a ceramic pipe, and the wire feeding nozzle 22 can be a copper pipe, so that the copper pipe is sleeved with the ceramic pipe, so that good heat dissipation is achieved without arc on both sides, thereby obtaining a good weld.
[0046] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.
Claims
1. A welding tip device for narrow gap welding, characterized by, The utility model relates to a welding wire feeding device, which comprises a connecting rod (10) with a wire feeding channel (11) and a ventilation hole (12) on the side of the connecting rod (10); a wire feeding mechanism (20) comprising a conductive nozzle (21) and a wire feeding nozzle (22) in communication with the conductive nozzle (21), wherein the conductive nozzle (21) is connected to one end of the connecting rod (10) and in communication with the wire feeding channel (11); and a side blowing mechanism (30) located outside the wire feeding mechanism (20) and comprising a gas cover (33) and a blowing nozzle (32) in communication with the gas cover (33), wherein the gas cover (33) is sleeved on the outside of the connecting rod (10), and the blowing nozzle (32) is in communication with the ventilation hole (12) through the gas cover (33). The side blowing mechanism (30) further comprises a flow divider (34) sleeved on the outside of the connecting rod (10) and covering the ventilation hole (12) on the connecting rod (10), wherein the flow divider (34) is provided with a plurality of flow holes (341) on the side thereof, the gas cover (33) is sleeved on the outside of the flow divider (34) and forms an air cavity (343) in communication with the flow holes (341) between the flow divider (34) and the gas cover (33), and the blowing nozzle (32) is in communication with the air cavity (343). The gas cover (33) comprises a first shell (331) and a second shell (332), wherein the first shell (331) and the second shell (332) are respectively arranged on the two sides of the flow divider (34) and connected to each other, and the first shell (331), the second shell (332) and the flow divider (34) form the air cavity (343) therebetween, and the blowing nozzle (32) is in communication with the first shell (331). The first shell (331) comprises a first main body part (33a) and a first flange (33b) arranged on the edge of the first main body part (33a), and the second shell (332) comprises a second main body part (33c) and a second flange (33d) arranged on the edge of the second main body part (33c), wherein the first main body part (33a) and the second main body part (33c) are respectively arranged on the two sides of the flow divider (34) to form the air cavity (343), and the first flange (33b) and the second flange (33d) are bolted.
2. A torch device for narrow gap welding according to claim 1, characterized in that, The side blowing mechanism (30) further comprises a first sealing ring (13) and a second sealing ring (14), wherein the first sealing ring (13) and the second sealing ring (14) are sleeved on the outside of the flow divider (34) at intervals, the first sealing ring (13) and the second sealing ring (14) are respectively arranged in abutment with the inner side of the gas cover (33) facing the flow divider (34), and are respectively arranged on the two sides of the air cavity (343).
3. A torch device for narrow gap welding according to claim 2, wherein, 4. The nozzle assembly for narrow gap welding of claim 3, wherein, 5. The tip assembly for narrow gap welding of claim 2, wherein, 6. The nozzle assembly for narrow gap welding of claim 2, wherein, The side blowing mechanism (30) further comprises a third sealing ring (15), a bottom of the flow divider (34) is provided with a through hole (342), one end of the connecting rod (10) penetrates out of the through hole (342), and the third sealing ring (15) is arranged between a hole wall of the through hole (342) and the connecting rod (10).
7. A torch device for narrow gap welding according to any of claims 1-6, characterized in that, The blowing nozzle (32) comprises a first pipe section (321) and a second pipe section (322) in communication with each other, the first pipe section (321) is in communication with the air cover (33), and the first pipe section (321) and the second pipe section (322) are arranged at an included angle.
8. A torch device for narrow gap welding according to any of claims 1-6, characterized in that, The wire feeding mechanism (20) further comprises an insulating pipe (23), and the insulating pipe (23) is arranged outside the wire feeding nozzle (22).