A welding wire locking device for submerged arc welding and a welding system thereof

Abstract

The present application relates to a kind of welding wire locking device for submerged arc welding and its welding system, including the welding nozzle main body connected with the main body of submerged arc welding and the pressing mechanism that can pass through the radial direction of welding nozzle main body welding nozzle main body and with the outside wall of welding wire resistance.The pressing mechanism has conductivity, and the outer wall of pressing mechanism is connected with welding nozzle main body, and pressing mechanism can conduct current on welding nozzle main body to welding wire.Pass through welding nozzle main body by pressing mechanism, so that pressing mechanism is always in contact with welding wire, and pressing mechanism is connected with welding nozzle main body simultaneously, ensure that welding wire can be connected with welding nozzle main body through pressing mechanism, so as to conduct current on welding nozzle main body to welding wire, i.e.it can be worn with the wear between welding wire and welding nozzle, not affected by the wear of welding wire to welding nozzle main body.Thereby making the contact effect between cable type welding wire and through hole better, leading to the conductivity of welding nozzle is stronger, and welding wire is not prone to sticking problem, thereby making the continuity and reliability of welding improve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a welding wire locking device for submerged arc welding and a welding system thereof. BACKGROUND

[0002] Submerged arc welding (including submerged arc surfacing and electroslag surfacing, etc.) is a method of welding with the arc burning under the flux layer. Its inherent advantages of stable welding quality, high welding productivity, no arc light and little smoke make it the main welding method for important steel structure manufacturing such as pressure vessels, pipe sections, box beams, etc.

[0003] At present, submerged arc welding generally adopts two forms of welding wire, one is the traditional single smooth surface welding wire, and the other is the cable type welding wire formed by twisting multiple smooth welding wires. Compared with single welding wire, cable type welding wire can achieve high welding efficiency with smaller current, so the cable type welding wire welding method is more practical. However, since the cable type welding wire is twisted by multiple welding wires, the outer surface of the cable type welding wire is rough and the diameter is large, so the cable type welding wire is sequentially subjected to the wear of the wire feeding mechanism and the welding nozzle after coming out of the welding wire barrel. Further, it leads to the less than ideal stability in the welding process. Specifically, since the wire feeding mechanism and the welding nozzle need to have a certain clamping function on the welding wire, and because the outer surface of the cable type welding wire is rough and the diameter is large, the cable type welding wire is severely worn when it passes through the wire hole of the welding nozzle while being continuously fed downward by the wire feeding mechanism. When the inner diameter of the wire hole of the welding nozzle is excessively worn, the diameter of the wire hole becomes larger, which results in poor contact or no contact between the cable type welding wire and the wire hole, leading to poor conductivity of the welding nozzle and easy sticking of the welding wire, and further leading to poor continuity and reliability of the welding. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a welding wire locking device for submerged arc welding and a welding system thereof, which solves the problem that the inner diameter of the wire hole of the welding nozzle is excessively worn, resulting in a larger diameter of the wire hole, which leads to poor contact or no contact between the cable type welding wire and the wire hole, poor conductivity of the welding nozzle, easy sticking of the welding wire, and further poor continuity and reliability of the welding.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purposes, the main technical solutions adopted by the present application include:

[0008] In one aspect, a welding wire locking device for submerged arc welding includes a welding nozzle body connected to a submerged arc welding body and a pressing mechanism capable of passing through the welding nozzle body in a radial direction of the welding nozzle body and abutting against an outer wall of a welding wire.

[0009] The pressing mechanism has conductivity, and an outer wall of the pressing mechanism is connected to the welding nozzle body, and the pressing mechanism is capable of conducting current on the welding nozzle body to the welding wire.

[0010] Optionally, the pressing mechanism includes at least two conductive pressing blocks and an adjusting structure, and the adjusting structure is arranged one-to-one with the conductive pressing blocks.

[0011] The conductive pressing block has a first end abutting against the welding wire and a second end arranged opposite to the first end, and the second end passes out of the outer wall of the welding nozzle body in the radial direction of the welding wire and abuts against the adjusting structure.

[0012] As the degree of wear between the welding wire and the first end of the conductive pressing block changes, the adjusting structure can adjust the radial distance of the conductive pressing block relative to the welding wire inwardly, so that the first end of the conductive pressing block always abuts against the outer wall of the welding wire.

[0013] Optionally, the adjusting structure includes a conductive pressing strip, a locking member and an adjusting member.

[0014] The conductive pressing strip is arranged in a longitudinal direction of the welding nozzle body, one end of the conductive pressing strip is locked to the welding nozzle body through the locking member, the other end of the conductive pressing strip is abutted through the adjusting member, the inner wall of the conductive pressing strip abuts against the second end of the conductive pressing block, and the other end of the conductive pressing strip is mounted to the welding nozzle body through the adjusting member.

[0015] Optionally, the welding nozzle body includes a connecting portion, a transition portion and a tapered head portion formed in sequence from top to bottom.

[0016] The top of the connecting portion is provided with a boss outwardly in the radial direction, the transition portion is a cylindrical structure, and the diameter of the connecting portion is greater than that of the transition portion.

[0017] The tapered head portion is in the shape of a truncated cone.

[0018] Optionally, the plane where the second end of the conductive pressing block is located is an inclined plane.

[0019] Optionally, the welding nozzle body is formed by two welding nozzle bodies being buckled relative to each other to form the welding nozzle body through which the welding wire passes.

[0020] In another aspect, a welding system includes the welding wire locking device, the submerged arc welding main body, the wire feeding mechanism and the wire winding mechanism.

[0021] The welding nozzle main body top of the welding wire locking device is connected with the submerged arc welding main body bottom.

[0022] The wire feeding mechanism is arranged in the submerged arc welding main body, and the wire feeding mechanism can feed the welding wire to the welding nozzle main body.

[0023] The wire winding mechanism is used for winding one end of the welding wire, and the other end of the welding wire is wound for multiple turns and then passes through the wire feeding mechanism.

[0024] Optionally, the wire feeding mechanism includes a first wire guide mechanism and a second wire guide mechanism.

[0025] The first wire guide mechanism and the second wire guide mechanism are arranged on two sides of the welding wire respectively, the first wire guide mechanism is connected with the rotating motor, and the second wire guide mechanism can be close to or away from the first wire guide mechanism to compress the welding wire.

[0026] Optionally, the first wire guide mechanism includes a driving wire guide wheel connected with the output end of the rotating motor.

[0027] The second wire guide mechanism includes a driven wire guide wheel and a guide wheel adjusting member which rotate through friction between the driving wire guide wheel.

[0028] The driven wire guide wheel is arranged above the right of the driving wire guide wheel, and an end surface of the driven wire guide wheel is provided with a vertical sliding groove, and a rotating shaft of the driven wire guide wheel can slide up and down along the vertical sliding groove to a suitable position and then be fixed through the guide wheel adjusting member.

[0029] Optionally, the wire feeding mechanism further includes a fastening chain, one end of the fastening chain is sleeved on the rotating shaft of the driving wire guide wheel, and the other end of the fastening chain is sleeved on the rotating shaft of the driven wire guide wheel.

[0030] Optionally, the wire winding mechanism includes a welding cylinder and a welding cylinder wire guide mechanism arranged in the welding cylinder.

[0031] (Three) beneficial effects

[0032] The beneficial effects of this invention are as follows: The wire locking device for submerged arc welding of this invention uses a clamping mechanism that passes through the nozzle body to ensure that the clamping mechanism is always in contact with the welding wire. Furthermore, the clamping mechanism is simultaneously connected to the nozzle body, ensuring that the welding wire remains connected to the nozzle body through the clamping mechanism. This allows the current on the nozzle body to be conducted to the welding wire, meaning that wear between the welding wire and the nozzle body is not affected by wear on the nozzle body. This solves the problem of excessive wear on the inner diameter of the nozzle's through-hole, which leads to an increase in the diameter of the through-hole. This results in better contact between the cable-type welding wire and the through-hole, strengthening the conductivity of the nozzle, reducing the likelihood of welding wire sticking, and ultimately improving the continuity and reliability of the welding process. Attached Figure Description

[0033] Figure 1 This is a schematic front view of the wire locking device for submerged arc welding according to the present invention.

[0034] Figure 2 for Figure 1 A partial structural diagram of the welding nozzle body.

[0035] [Explanation of Labels in the Attached Image]

[0036] 1: Welding nozzle body; 11: Connecting part; 12: Transition part; 13: Conical head; 2: Clamping mechanism; 21: Conducting voltage clamping block; 22: Adjusting structure; 221: Conducting voltage clamping strip; 222: Locking part; 223: Adjusting part; 10: Submerged arc welding body; 20: Wire feeding mechanism; 201: First wire feeding mechanism; 2011: Active wire feeding wheel; 202: Second wire feeding mechanism; 2021: Driven wire feeding wheel; 2022: Guide wheel adjusting part; 2023: Vertical slide groove; 203: Rotating motor; 204: Fastening chain; 30: Winding mechanism; 301: Welding cylinder; 302: Limiting block; 303: Welding wire feeding wheel; a: Welding wire. Detailed Implementation

[0037] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0038] Reference Figures 1-2 As shown in the figure, a welding system proposed in this embodiment of the invention includes a wire locking device for submerged arc welding, a submerged arc welding body 10, a wire feeding mechanism 20, and a wire winding mechanism 30.

[0039] The welding wire locking device for submerged arc welding comprises a welding nozzle body 1 connected with a submerged arc welding body 10 and a pressing mechanism 2 capable of penetrating the welding nozzle body 1 along the radial direction of the welding nozzle body 1 and abutting against the outer wall of the welding wire a. The pressing mechanism 2 is conductive, and the outer wall of the pressing mechanism 2 is connected with the welding nozzle body 1, and the pressing mechanism 2 is capable of conducting the current on the welding nozzle body 1 to the welding wire a.

[0040] Further, the pressing mechanism 2 comprises at least two conductive pressing blocks 21 and adjusting structures 22, and the adjusting structures 22 are arranged one by one with the conductive pressing blocks 21. The conductive pressing block 21 has a first end abutting against the welding wire a and a second end arranged opposite to the first end, and the second end penetrates the outer wall of the welding nozzle body 1 along the radial direction of the welding wire a and abuts against the adjusting structure 22. With the change of the wear degree between the welding wire a and the first end of the conductive pressing block 21, the adjusting structure 22 can adjust the radial distance of the conductive pressing block 21 relative to the welding wire a inwardly, so that the first end of the conductive pressing block 21 always abuts against the outer wall of the welding wire a. With the wear between the cable type welding wire and the hole of the welding nozzle body 1, the conductive pressing block 21 can be pressed against the welding wire a at any time through the adjustment of the adjusting structure 22, while the conductivity of the welding wire is ensured. However, the conductive pressing block 21 will be worn smaller over time, so the adjusting structure 22 can be adjusted at any time to always ensure the pressing of the welding wire. Of course, if the conductive pressing block 21 is finally worn very small, the conductive pressing block 21 can be replaced. It is convenient to operate, while the welding effect is ensured. Moreover, the adjustability is greater. Because the welding wire is relatively thick and the wear is relatively large, therefore, when the adjustable space between the welding wire and the welding nozzle body 1 is large, the replacement time of the welding nozzle body 1 can be greatly delayed.

[0041] Further, the adjusting structure 22 comprises a conductive pressing strip 221, a locking piece 222 and an adjusting piece 223. The conductive pressing strip 221 is arranged along the longitudinal direction of the welding nozzle body 1, one end of the conductive pressing strip 221 is locked to the welding nozzle body 1 through the locking piece 222, the other end of the conductive pressing strip 221 abuts against the adjusting piece 223, the inner wall of the conductive pressing strip 221 abuts against the second end of the conductive pressing block 21, and the other end of the conductive pressing strip 221 is installed on the welding nozzle body 1 through the adjusting piece 223. Preferably, the locking piece 222 and the adjusting piece 223 are both bolts, and the force can be well controlled through the screwing of the bolts.

[0042] Further, the welding nozzle body 1 comprises a connecting part 11, a transition part 12 and a tapered head part 13 formed in sequence from top to bottom. The top of the connecting part 11 is provided with a boss outwardly along the radial direction, the transition part 12 is a cylindrical structure, and the diameter of the connecting part 11 is greater than that of the transition part 12. The tapered head part 13 is in the shape of a truncated cone.

[0043] Further, the plane where the second end of the conductive pressure block 21 is located is an inclined plane. Further improving the pressure effect is better, and the movement is prevented.

[0044] Further, the welding nozzle body 1 is formed by two welding nozzle bodies 14 being buckled relative to each other to form the welding nozzle body 1 through which the welding wire a passes.

[0045] Further, the welding nozzle body 1 of the welding wire locking device is connected to the bottom of the submerged arc welding body 10. The wire feeding mechanism 20 is arranged in the submerged arc welding body 10, and the wire feeding mechanism 20 can feed the welding wire a to the welding nozzle body 1. The wire winding mechanism 30 is used to wind one end of the welding wire a, and the other end of the welding wire a is wound for multiple turns and then passes through the wire feeding mechanism 20.

[0046] Further, the wire feeding mechanism 20 includes a first wire guide mechanism 201 and a second wire guide mechanism 202. The first wire guide mechanism 201 and the second wire guide mechanism 202 are arranged on the two sides of the welding wire a, respectively. The first wire guide mechanism 201 is connected to the rotating motor 203, and the second wire guide mechanism 202 can be close to or away from the first wire guide mechanism 201 to press the welding wire a. Here, it should be noted that the diameter of the cable type welding wire is larger than that of the ordinary welding wire, and the cable type welding wire is most severely worn by the driving wheel in the wire feeding mechanism. Often, the driving wheel loses power and causes welding interruption and reduces stability due to severe wear.

[0047] In this embodiment, the first wire guide mechanism 201 and the second wire guide mechanism 202 of the wire feeding mechanism 20 are arranged on the two sides of the welding wire a.

[0048] Further, the first wire guide mechanism 201 includes a driving wire wheel 2011 connected to the output end of the rotating motor 203. The second wire guide mechanism 202 includes a driven wire wheel 2021 and a guide wheel adjusting member 2022 which rotate by friction between the driving wire wheel 2011. The driven wire wheel 2021 is arranged above the right of the driving wire wheel 2011, and the end face of the driven wire wheel 2021 is provided with a vertical sliding groove 2023. The rotating shaft of the driven wire wheel 2021 can slide up and down along the vertical sliding groove 2023 to the appropriate position and then be fixed by the guide wheel adjusting member 2022. The wire is straightened by the up and down misalignment to make the wire feeding effect better. Moreover, the gap between the driving wire wheel 2011 and the driven wire wheel 2021 is adjustable through the welding wire a to prevent the straightening effect from being poor after wear. The purpose of pressure is achieved by the up and down misalignment.

[0049] Further, the wire feeding mechanism 20 further includes a fastening chain 204, one end of the fastening chain 204 is sleeved on the rotating shaft of the driving wire wheel 2011, and the other end of the fastening chain 204 is sleeved on the rotating shaft of the driven wire wheel 2021. The fastening chain 204 is used to tighten the driving wire wheel 2011 and the driven wire wheel 2021 to ensure that the connection effect between the two is more stable.

[0050] Further, the winding mechanism 30 comprises a welding cylinder 301 and a welding cylinder guide mechanism arranged in the welding cylinder 301. The welding cylinder guide mechanism comprises a limiting block 302 and a welding wire guide wheel 303. The limiting block 302 can prevent the welding wire from being wound too much and from being off-wound. The welding wire guide wheel 303 is arranged to preliminarily straighten the wire end, avoiding the disorder of the welding wire in the welding cylinder.

[0051] Firstly, the brand-new packaged welding wire a is placed in the welding cylinder 301 and is naturally unfolded. Due to the restraint of the barrel wall of the welding cylinder 301 and the blocking of the limiting block 302, the welding wire a is paused when it is unfolded to a certain extent. After the welding wire a is stable, the welding wire a is passed out of the barrel welding wire guide wheel 303 and is placed between the driving wire guide wheel 2011 and the driven wire guide wheel 2021. After the distance between the driving wire guide wheel 2011 and the driven wire guide wheel 2021 is adjusted to meet the appropriate deflection distance of the welding wire a to the welding nozzle body 1, the driving wire guide wheel 2011 and the driven wire guide wheel 2021 are fastened. The fastening chain 204 is adjusted to make the driving wire guide wheel 2011 and the driven wire guide wheel 2021 clamped and have a certain deflection amount. The welding wire a is sent into the submerged arc welding nozzle body 1 and is straightened.

[0052] The welding wire locking device for submerged arc welding of the present application passes through the welding nozzle body through the pressing mechanism, so that the pressing mechanism 2 is always in contact with the welding wire, and the pressing mechanism 2 is connected with the welding nozzle body 1 at the same time. It is ensured that the welding wire can be connected with the welding nozzle body 1 through the pressing mechanism 2 at all times, so that the current on the welding nozzle body 1 is conducted to the welding wire a. That is, the wear between the welding wire a and the welding nozzle body 1 does not affect the wear of the welding nozzle body 1 by the welding wire. The problem that the diameter of the wire hole of the welding nozzle becomes larger after the inner diameter of the wire hole is excessively worn is solved. Therefore, the contact effect between the cable-type welding wire and the wire hole is better, the conductivity of the welding nozzle is stronger, the welding wire is not prone to sticking, and the continuity and reliability of welding are improved.

[0053] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0054] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", "unfixed", and the like should be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0056] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0057] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A welding system characterized by: The device comprises a submerged arc welding main body (10), a wire feeding mechanism (20), a wire winding mechanism (30) and a welding wire locking device for submerged arc welding. The welding wire locking device comprises a welding nozzle main body (1) connected with the submerged arc welding main body (10) and a pressing mechanism (2) capable of penetrating the welding nozzle main body (1) along the radial direction of the welding nozzle main body (1) and abutting against the outer wall of the welding wire (a). The pressing mechanism (2) is conductive, and the outer wall of the pressing mechanism (2) is connected with the welding nozzle main body (1), so that the pressing mechanism (2) can conduct the current on the welding nozzle main body (1) to the welding wire (a). The pressing mechanism (2) comprises at least two conductive pressing blocks (21) and adjusting structural members (22), and the adjusting structural members (22) are arranged one by one corresponding to the conductive pressing blocks (21). The conductive pressing block (21) has a first end abutting against the welding wire (a) and a second end arranged opposite to the first end. The adjusting structural member (22) comprises a conductive pressing strip (221), a locking member (222) and an adjusting member (223). The conductive pressing strip (221) is arranged along the longitudinal direction of the welding nozzle main body (1), one end of the conductive pressing strip (221) is locked to the welding nozzle main body (1) through the locking member (222), the other end of the conductive pressing strip (221) is abutted through the adjusting member (223), the inner wall of the conductive pressing strip (221) abuts against the second end of the conductive pressing block (21), and the other end of the conductive pressing strip (221) is installed on the welding nozzle main body (1) through the adjusting member (223). The locking member (222) and the adjusting member (223) are both bolts. The welding wire (a) is a cable type welding wire. With the change of the degree of wear between the welding wire (a) and the first end of the conductive pressing block (21), the adjusting structural member (22) can adjust the radial distance of the conductive pressing block (21) relative to the welding wire (a) inwardly, so that the first end of the conductive pressing block (21) always abuts against the outer wall of the welding wire (a). The welding nozzle main body (1) comprises a connecting portion (11), a transition portion (12) and a tapered head portion (13) formed in sequence from top to bottom. The top of the connecting portion (11) is provided with a boss outwardly along the radial direction, the transition portion (12) is a cylindrical structural member, and the diameter of the connecting portion (11) is greater than that of the transition portion (12). The tapered head portion (13) is in the shape of a truncated cone. The plane where the second end of the conductive pressing block (21) is located is an inclined plane. The top of the welding nozzle main body (1) of the welding wire locking device is connected with the bottom of the submerged arc welding main body (10). The wire feeding mechanism (20) is arranged in the submerged arc welding main body (10), and the wire feeding mechanism (20) can feed the welding wire (a) to the welding nozzle main body (1). The wire winding mechanism (30) is used for winding one end of the welding wire (a), and the other end of the welding wire (a) is wound for multiple turns and then penetrates the wire feeding mechanism (20). The wire feeding mechanism (20) comprises a first wire guide mechanism (201) and a second wire guide mechanism (202); The first wire guide mechanism (201) and the second wire guide mechanism (202) are arranged on the two sides of the welding wire (a) respectively, the first wire guide mechanism (201) is connected with the rotating motor (203), and the second wire guide mechanism (202) can be close to or away from the first wire guide mechanism (201) to compress the welding wire (a).

2. The welding system of claim 1, wherein: The welding nozzle body (1) is formed by the relative buckling of two welding nozzle bodies (14) for the welding wire (a) to pass through the welding nozzle body (1).

3. The welding system of claim 1, wherein: The first wire guide mechanism (201) comprises a driving wire wheel (2011) connected with the output end of the rotating motor (203); The second wire guide mechanism (202) comprises a driven wire wheel (2021) and a guide wheel adjusting part (2022) which rotate through friction between the driving wire wheel (2011); The driven wire wheel (2021) is arranged above the right side of the driving wire wheel (2011), and the end surface of the driven wire wheel (2021) is provided with a vertical sliding groove (2023), the rotating shaft of the driven wire wheel (2021) can slide up and down along the vertical sliding groove (2023) to the appropriate position, and then be fixed through the guide wheel adjusting part (2022).

4. The welding system of claim 3, wherein: The wire feeding mechanism (20) further comprises a fastening chain (204), one end of the fastening chain (204) is sleeved on the rotating shaft of the driving wire wheel (2011), and the other end of the fastening chain (204) is sleeved on the rotating shaft of the driven wire wheel (2021).

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