Wire feeding, blowing and dust collecting device for laser welding

Abstract

The utility model relates to a wire feeding, blowing and dust collecting device for laser welding. The wire feeding, blowing and dust collecting device comprises a welding laser head and a wire feeding unit installed on one side of the welding laser head. The wire feeding unit is a three-in-one wire feeding mechanism, and the three-in-one wire feeding mechanism comprises a wire feeding fixing pipe, a dust suction pipe and a dust suction nozzle. The utility model provides a three-in-one device which coaxially designs a wire guide copper pipe, a welding shielding gas copper pipe and a dust collection pipe, is simple and quick to adjust, compact in structure and highly integrated, is mounted on the side surface of a laser head, meets the functions of wire feeding, shielding gas blowing and dust collection, greatly reduces the risk of interference with welding products and tools, and effectively improves the welding reachable rate.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a wire feeding, blowing and dust collection device for laser welding. Background Technology

[0002] Laser welding technology has been widely used in recent years. Laser welding can weld base materials without filler wire through self-fusion. However, some products require high weld strength and low precision in splicing gaps, so filler wire welding is necessary. The commonly used wire feeding device is a guide copper tube. When the weld appearance is important, welding shielding gas needs to be blown. In order to avoid environmental pollution, most customers will request the addition of a dust extraction pipe. The dust extraction pipe is usually installed on the top of the welding room to ventilate and extract dust from the entire room. However, the dust collection effect is not good. There is a lot of dust around the welding fixture, which affects the clamping accuracy of the fixture. Excessive welding fumes left in the welding room can also affect the health of the operators.

[0003] Some manufacturers add an extra dust extraction port near the laser head to improve dust extraction efficiency, but the off-axis side-mounted dust extraction port structure can easily interfere with products and tooling.

[0004] Currently, the market commonly uses guide wire copper tubes, protective gas copper tubes, and dust suction tubes, which are installed on the side of the welding head. This greatly affects the accessibility of welding. When welding in narrow spaces, the product is prone to interference with the guide wire copper tube, air blowing copper tube, and dust suction tube, making the welding unreachable. The three pipe fixing mechanisms are cumbersome to adjust and limit the debugging efficiency.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a wire feeding, blowing and dust collection device for laser welding, so as to make it more valuable for industrial use. Utility Model Content

[0006] To solve any of the above-mentioned technical problems, the purpose of this utility model is to provide a wire feeding, blowing, and dust collection device for laser welding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A wire feeding and dust extraction device for laser welding, including a welding laser head and a wire feeding unit installed on one side of the welding laser head;

[0009] The wire feeding unit is a three-in-one wire feeding mechanism, which includes a wire feeding fixing tube, a dust extraction tube, and a dust extraction nozzle. The top side of the wire feeding fixing tube is mounted on one side of the welding laser head through a mounting mechanism. The dust extraction tube is located outside the wire feeding fixing tube, and its bottom is connected to the dust extraction nozzle below. The bottom of the wire feeding fixing tube is connected to the top of the protective gas distribution shaft. The outer side of the wire feeding fixing tube near the middle is connected to the top of the air jet nozzle located inside the dust extraction nozzle. The bottom of the wire feeding fixing tube is connected to the top of the wire guide nozzle located inside the air jet nozzle. A wire guide hose is installed inside the wire feeding fixing tube, and the bottom of the wire guide hose passes through the protective gas distribution shaft and then connects to the wire guide nozzle below.

[0010] As a further improvement of this utility model, the installation mechanism includes a right-angle adjustable fixing plate, a clamping block and a rotating shaft. The clamping block is installed on the side of the wire feeding fixing tube near the top. The clamping block is connected to the right-angle adjustable fixing plate through the rotating shaft. The right-angle adjustable fixing plate is installed on one side of the welding laser head.

[0011] As a further improvement of this utility model, the top side of the wire guide hose is installed in the wire feeding fixing tube through the upper sealing ring, and the side of the wire guide hose near the bottom is installed in the protective gas distribution shaft through the lower sealing ring.

[0012] As a further improvement of this utility model, a welding wire is provided inside the guide wire hose, and the bottom of the welding wire passes through the guide wire nozzle and continues to extend outward.

[0013] As a further improvement of this utility model, the top of the dust extraction pipe is installed on the wire feeding fixing pipe through the first dust extraction pipe hose clamp, the second dust extraction pipe hose clamp is installed on the dust extraction branch pipe on one side of the dust extraction pipe, and the bottom of the dust extraction pipe is connected to the suction nozzle below through the third dust extraction pipe hose clamp.

[0014] As a further improvement of this utility model, a protective gas quick-connect fitting is installed on the side of the wire feeding fixing tube near the top.

[0015] As a further improvement of this utility model, the wire feeding fixing tube and the protective gas distribution shaft, the protective gas distribution shaft and the wire guide nozzle, and the protective gas distribution shaft and the air jet nozzle are all connected together by threads.

[0016] As a further improvement of this utility model, a number of jet holes are evenly distributed along the circumference at a position near the center of the protective gas distribution shaft and inside the jet nozzle.

[0017] As a further improvement of this utility model, the bottom of the jet nozzle has a conical structure.

[0018] As a further improvement to this utility model, the protective air distribution shaft, guide wire nozzle, air jet nozzle, and dust suction nozzle are coaxial.

[0019] By means of the above solution, this utility model has at least the following advantages:

[0020] This utility model provides a three-in-one device that integrates a guide wire copper tube, a welding shielding gas copper tube, and a dust collection tube on the same axis. It is simple and quick to adjust, has a compact and highly integrated structure, and is installed on the side of the laser head. It satisfies the functions of wire feeding, shielding gas blowing, and dust collection, and also greatly reduces the risk of interference with welding products and tooling, effectively improving the welding reachability.

[0021] This invention incorporates a flexible wire guide hose within the coaxial device to ensure a stable and uniform wire feeding speed. It also includes an annular gas distribution block to ensure that protective gas is ejected from the nozzle's circumferential array of gas holes to fully cover the weld pool, greatly preventing oxidation during solidification and avoiding welding defects.

[0022] During laser welding, the mechanism of this invention can simultaneously satisfy wire feeding, welding shielding gas blowing, and dust extraction at the weld seam. The three functions are integrated and coaxial, the mechanism is compact, reduces welding defects, and improves the quality of the working environment.

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a wire feeding, blowing, and dust collection device for laser welding according to this utility model;

[0026] Figure 2 yes Figure 1 Schematic diagram of the three-in-one wire feeding mechanism;

[0027] Figure 3 yes Figure 2 A schematic diagram of the decomposed structure;

[0028] Figure 4 yes Figure 2 A schematic diagram of the local internal structure.

[0029] The meanings of the labels in the figures are as follows.

[0030] 1. Welding laser head; 2. Three-in-one wire feeding mechanism; 3. Laser beam diagram; 4. Diagram of welding wire and laser focus overlap; 5. Right-angle adjustable fixing plate; 6. Clamping block; 7. Rotating shaft; 8. Upper sealing ring; 9. Wire feeding fixing tube; 10. Wire guide hose; 11. First hose clamp of dust extraction tube; 12. Second hose clamp of dust extraction tube; 13. Dust extraction tube; 14. Third hose clamp of dust extraction tube; 15. Lower sealing ring; 16. Protective gas distribution shaft; 17. Wire guide nozzle; 18. Air jet nozzle; 19. Dust suction nozzle; 20. Welding wire; 21. Protective gas quick connector. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. 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 claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] like Figures 1-4 As shown, a wire feeding and dust extraction device for laser welding includes a welding laser head 1 and a wire feeding unit installed on one side of the welding laser head 1.

[0034] The wire feeding unit is a three-in-one wire feeding mechanism 2, which includes a wire feeding fixing tube 9, a dust extraction tube 13, and a dust extraction nozzle 19. The top side of the wire feeding fixing tube 9 is mounted on one side of the welding laser head 1 via a mounting mechanism. The mounting mechanism includes a right-angle adjustable fixing plate 5, a clamping block 6, and a rotating shaft 7. The clamping block 6 is mounted on the side of the wire feeding fixing tube 9 near the top. The clamping block 6 is connected to the right-angle adjustable fixing plate 5 via the rotating shaft 7. The right-angle adjustable fixing plate 5 is mounted on one side of the welding laser head 1.

[0035] The dust extraction pipe 13 is located outside the wire feeding and fixing pipe 9. The bottom of the dust extraction pipe 13 is connected to the lower dust suction nozzle 19. The bottom of the wire feeding and fixing pipe 9 is connected to the top of the protective gas distribution shaft 16. The outer side of the wire feeding and fixing pipe 9 near the middle is connected to the top of the air jet nozzle 18 located inside the dust suction nozzle 19. The bottom of the air jet nozzle 18 has a conical structure. The bottom of the wire feeding and fixing pipe 9 is connected to the top of the wire guide nozzle 17 located inside the air jet nozzle 18. A wire guide hose 10 is installed inside the wire feeding and fixing pipe 9. The bottom of the wire guide hose 10 passes through the protective gas distribution shaft 16 and then connects to the lower wire guide nozzle 17. The protective gas distribution shaft 16, wire guide nozzle 17, air jet nozzle 18, and dust suction nozzle 19 are coaxial.

[0036] The top side of the wire guide hose 10 is installed inside the wire feeding fixing tube 9 via the upper sealing ring 8, and the bottom side of the wire guide hose 10 is installed inside the protective gas distribution shaft 16 via the lower sealing ring 15. A welding wire 20 is provided inside the wire guide hose 10, and the bottom of the welding wire 20 passes through the wire guide nozzle 17 and continues to extend outward.

[0037] The top of the dust extraction pipe 13 is mounted on the wire feeding fixing pipe 9 via a first dust extraction pipe clamp 11. A second dust extraction pipe clamp 12 is installed on a dust extraction branch pipe on one side of the dust extraction pipe 13. The bottom of the dust extraction pipe 13 is connected to the suction nozzle 19 below via a third dust extraction pipe clamp 14. A protective gas quick-connect fitting 21 is installed on the side of the wire feeding fixing pipe 9 near the top.

[0038] The wire feeding fixing tube 9 is connected to the protective gas distribution shaft 16, the protective gas distribution shaft 16 is connected to the wire guide nozzle 17, and the protective gas distribution shaft 16 is connected to the air jet nozzle 18 by threads.

[0039] Several jet holes are evenly distributed along the circumference at a position near the center of the protective gas distribution shaft 16 and inside the jet nozzle 18.

[0040] The first embodiment of this utility model:

[0041] This invention provides a compact coaxial three-in-one mechanism for laser welding, which integrates wire feeding, air blowing, and dust extraction. It can improve welding reach, more effectively blow protective gas to cover the molten pool to reduce oxidation and prevent welding defects, and can extract welding fumes close to the weld during the welding process, thereby improving the air quality of the working environment.

[0042] The welding laser head 1 is a standard market component. The three-in-one wire feeding mechanism 2 is fixed to the side of the welding laser head 1 via a right-angle adjustable fixing plate 5 using hexagonal screws. The connecting component is one of the main parameters for the assembly position accuracy, including the laser beam (e.g., ...). Figure 1 The focal point of the laser beam (illustrated in diagram 3) needs to coincide with the end of the welding wire 20 at the end of the wire feeding mechanism 2 (e.g., Figure 1(4) The welding wire and laser focus coincide in the diagram. The three-in-one wire feeding mechanism 2 can realize height adjustment, front and back adjustment of the wire spacing, and can also rotate around the rotating axis 7 to adjust the position of the welding wire 20.

[0043] The right-angle adjustable fixing plate 5 and the rotating shaft 7 are connected by screws. The rotating shaft 7 and the clamping block 6 are connected by screws. The clamping block 6 and the wire feeding fixing tube 9 are connected by a clamping structure. The clamping block 6 is equipped with two screws. The locking screws lock the clamping block 6 and the wire feeding fixing tube 9.

[0044] The wire guide hose 10 is fitted with an upper sealing ring 8 and a lower sealing ring 15. After assembly, the entire assembly is inserted into the wire feeding fixing tube 9. The protective gas distribution shaft 16 and the wire feeding fixing tube 9 are connected by threads. The upper sealing ring 8 and the inner hole of the wire feeding fixing tube 9 achieve a leak-proof protective gas seal, and the lower sealing ring 15 and the inner hole of the protective gas distribution shaft 16 also achieve a leak-proof protective gas seal. The wire guide nozzle 17 and the protective gas distribution shaft 16 are threaded together. The air jet nozzle 18 and the protective gas distribution shaft 16 are also threaded together.

[0045] The bend of the dust extraction pipe 13 adopts a corrugated pipe structure, which can be effectively bent. The wire feeding and fixing pipe 9 is inserted into the dust extraction pipe 13. The dust extraction pipe 13 is locked with the first hose clamp 11. The dust extraction pipe 13 is locked with the second hose clamp 12. The external dust collector pipe and the dust extraction branch pipe on the dust extraction pipe 13 are locked with the third hose clamp 14. The dust extraction nozzle 19 and the dust extraction pipe 13 are locked together.

[0046] The rotating shaft 7 can move and lock within the groove of the right-angle adjustable fixing plate 5. The rotating shaft 7 can rotate relative to the clamping block 6 to adjust the angle of the wire feeding fixing tube 9. After loosening the screw of the clamping block 6, the wire feeding fixing tube 9 can be adjusted in height and rotation. The gas pipe leading from the gas cylinder of the welding shielding gas is connected to the shielding gas quick connector 21. The shielding gas quick connector 21 is threaded to the side of the wire feeding fixing tube 9, and the shielding gas passes into the inside of the wire feeding fixing tube 9. The wire feeding flexible tube of the external wire feeder is threaded to the end of the wire feeding fixing tube 9. The welding wire 20 passes through the wire guide hose 10, through the shielding gas distribution shaft 16, through the wire guide nozzle 17, and then protrudes 10mm. The shielding gas distribution shaft 16 has an annular circumferential array of jet holes, which makes the shielding gas delivered evenly and reduces the blowing pressure. The jet nozzle 18 has a tapered design, which can effectively guide the welding shielding gas to the surface of the molten pool, effectively improving the internal and surface quality of the weld after solidification. The external dust collector pipe is connected to the dust extraction pipe 13. When welding begins, the internal dust extraction causes the dust extraction nozzle 19 to generate negative pressure wind speed, which automatically absorbs the dust generated during welding. The welding wire 20, the protective gas distribution shaft 16, and the dust extraction nozzle 19 are coaxial, with a compact structure and good blowing and dust extraction effect.

[0047] This invention provides a three-in-one device that coaxially integrates a wire guide tube, a welding shielding gas tube, and a dust extraction tube. It features simple and quick adjustment, a compact and highly integrated structure, and is mounted on the side of the laser head. It fulfills the functions of wire feeding, shielding gas blowing, and dust extraction, while significantly reducing the risk of interference with the welded products and tooling, effectively improving welding success rate. The coaxial device incorporates a flexible wire guide tube to ensure a stable and uniform wire feeding speed, and an internal annular gas distribution block to ensure that the shielding gas is ejected from the nozzle's circumferential array of gas holes to fully cover the weld pool, greatly preventing oxidation during solidification and avoiding welding defects. During laser welding, the mechanism can simultaneously fulfill the functions of wire feeding, shielding gas blowing, and dust extraction at the weld seam. The three-in-one coaxial design and compact structure reduce welding defects and improve the quality of the working environment.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two components.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A wire feeding and dust extraction device for laser welding, comprising a welding laser head (1) and a wire feeding unit mounted on one side of the welding laser head (1); characterized in that: The wire feeding unit is a three-in-one wire feeding mechanism (2), which includes a wire feeding fixing tube (9), a dust extraction tube (13), and a dust extraction nozzle (19). The top side of the wire feeding fixing tube (9) is mounted on one side of the welding laser head (1) through a mounting mechanism. The dust extraction tube (13) is located outside the wire feeding fixing tube (9), and the bottom of the dust extraction tube (13) is connected to the dust extraction nozzle (19) below. The bottom of the wire feeding fixing tube (9) is separated from the protective gas. The top of the shaft (16) is connected, the outer side of the wire feeding fixing tube (9) near the middle is connected to the top of the air jet nozzle (18) located inside the dust suction nozzle (19), the bottom of the wire feeding fixing tube (9) is connected to the top of the wire guide nozzle (17) located inside the air jet nozzle (18), a wire guide hose (10) is installed in the wire feeding fixing tube (9), the bottom of the wire guide hose (10) passes through the protective air distribution shaft (16) and then connects to the wire guide nozzle (17) below.

2. The wire feeding, blowing, and dust collection device for laser welding as described in claim 1, characterized in that, The installation mechanism includes a right-angle adjustable fixing plate (5), a clamping block (6) and a rotating shaft (7). The clamping block (6) is installed on the side of the wire feeding fixing tube (9) near the top. The clamping block (6) is connected to the right-angle adjustable fixing plate (5) through the rotating shaft (7). The right-angle adjustable fixing plate (5) is installed on one side of the welding laser head (1).

3. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1, characterized in that, The top side of the wire guide hose (10) is installed in the wire feeding fixing tube (9) through the upper sealing ring (8), and the bottom side of the wire guide hose (10) is installed in the protective gas distribution shaft (16) through the lower sealing ring (15).

4. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1, characterized in that, A welding wire (20) is provided inside the wire guide hose (10), and the bottom of the welding wire (20) passes through the wire guide nozzle (17) and continues to extend outward.

5. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1, characterized in that, The top of the dust extraction pipe (13) is installed on the wire feeding fixing pipe (9) through the first dust extraction pipe hose clamp (11). The second dust extraction pipe hose clamp (12) is installed on the dust extraction branch pipe on one side of the dust extraction pipe (13). The bottom of the dust extraction pipe (13) is connected to the suction nozzle (19) below through the third dust extraction pipe hose clamp (14).

6. The wire feeding, blowing, and dust collection device for laser welding as described in claim 1, characterized in that, A protective gas quick-connect fitting (21) is installed on the side of the wire feeding fixing tube (9) near the top.

7. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1, characterized in that, The wire feeding fixing tube (9) and the protective gas distribution shaft (16), the protective gas distribution shaft (16) and the wire guide nozzle (17), and the protective gas distribution shaft (16) and the air jet nozzle (18) are all connected together by threads.

8. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1, characterized in that, Several jet holes are evenly distributed along the circumference at a position near the center of the protective gas distribution shaft (16) and inside the jet nozzle (18).

9. The wire feeding, blowing, and dust extraction device for laser welding as described in claim 1 or 7, characterized in that, The bottom of the jet nozzle (18) has a conical structure.

10. The wire feeding, blowing, and dust collection device for laser welding as described in claim 1, characterized in that, The protective air distribution shaft (16), guide wire nozzle (17), air jet nozzle (18), and dust suction nozzle (19) are coaxial.

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