A gas curtain type welding torch nozzle suitable for different welding appearances

Abstract

The application discloses a gas curtain type welding gun nozzle suitable for different welding appearances and belongs to the technical field of welding equipment. The nozzle body is uniformly provided with a plurality of smoke suction mechanisms in the circumferential direction outside the nozzle body. A welding fume channel is arranged inside the smoke suction mechanism. The top end of the welding fume channel is connected with the inlet of a welding fume dust collector. The bottom end of the smoke suction mechanism is hingedly connected with a welding fume inlet mechanism. An inlet cavity is arranged inside the welding fume inlet mechanism. The suction inlet of the inlet cavity faces the welding position. The smoke outlet of the inlet cavity faces the bottom end inlet of the welding fume channel. The bottom end height of the smoke suction mechanism is adjustable. The inclination angle of the welding fume inlet mechanism is adjustable. The welding fume generated at the welding point is sucked and treated by the smoke suction mechanism surrounding the outside of the nozzle body, the amount of welding fume dispersed into the air is reduced, and the environment is protected and the health of workers is ensured.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and specifically relates to an air curtain welding torch nozzle suitable for different welding morphologies. Background Technology

[0002] In factory welding processes, gas shielded welding torches are commonly used welding tools. However, during the use of these torches, a large amount of welding fumes are generated, which drift in the air and may even enter the human body, seriously polluting the air and posing a significant threat to human health.

[0003] In order to protect the environment and ensure the health of workers, this application proposes an air curtain welding torch nozzle suitable for different welding morphologies. The fume extraction mechanism surrounding the outside of the nozzle body extracts the welding fumes generated at the welding point, reducing the amount of welding fumes dispersed into the air, thereby protecting the environment and ensuring the health of workers. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an air curtain welding torch nozzle suitable for different welding morphologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A gas curtain welding torch nozzle suitable for different welding morphologies includes a nozzle body, with a plurality of fume extraction mechanisms evenly arranged around the outside of the nozzle body in the circumferential direction, and a welding fume channel arranged inside the fume extraction mechanism, the top of the welding fume channel being connected to the inlet of a welding fume dust collector. The bottom end of the fume extraction mechanism is hinged to a welding fume inlet mechanism. The welding fume inlet mechanism has an inlet chamber inside. The inlet of the inlet chamber faces the welding position, and the outlet of the inlet chamber faces the bottom inlet of the welding fume channel. The bottom height of the smoke extraction mechanism is adjustable; The tilt angle of the welding fume inlet mechanism is adjustable.

[0006] Preferably, the smoking mechanism includes a smoking tube fixedly mounted on the muzzle body and a telescopic tube slidably fitted on the lower part of the outer wall of the smoking tube; The inner cavity of the smoke extraction cylinder and the inner cavity of the telescopic cylinder form a welding fume channel; The telescopic cylinder and the welding fume inlet mechanism are both connected to the linkage height and tilt adjustment mechanism, which is used to adjust the bottom height of the fume extraction mechanism and the tilt angle of the welding fume inlet mechanism.

[0007] Preferably, the smoke tube is connected to the side wall of the muzzle body via a fixing seat, and the lower end of the fixing seat is provided with two connecting rods surrounding the outside of the smoke tube, and the connecting rods are provided with guide grooves extending in the vertical direction; Two guide posts are provided at the top of the outer wall of the telescopic cylinder, and the guide posts extend outward into the corresponding guide grooves.

[0008] Preferably, the top of the welding fume inlet mechanism is provided with two mounting plates, and a hinge shaft is provided on one side of the two mounting plates opposite each other; the bottom of the outer wall of the telescopic cylinder is provided with two hinge holes, and the hinge shaft is hinged to the corresponding hinge holes.

[0009] Preferably, the linkage height and tilt adjustment mechanism includes a height adjustment cylinder and a tilt adjustment cylinder; The upper end of the cylinder shell of the height adjusting cylinder is hinged to the fixed seat, and the end of the piston rod of the height adjusting cylinder is hinged to the guide column. The upper end of the cylinder shell of the tilt adjustment cylinder is hinged to the fixed base, and the end of the piston rod of the tilt adjustment cylinder is hinged to the top of the welding fume inlet mechanism.

[0010] Preferably, the welding fume inlet mechanism has an arc-shaped structure on the side near the central axis of the nozzle body, and the suction port is located on the arc-shaped side of the welding fume inlet mechanism.

[0011] Preferably, the chimney is equipped with a turbulence removal mechanism.

[0012] Preferably, the turbulence removal mechanism includes a central shaft with spiral turbulence blades on it. Both ends of the central shaft are connected to connecting members, which are connected to the inner wall of the chimney. A slag collection ring is coaxially arranged at the bottom of the inner wall of the chimney, and a slag collection groove is formed between the slag collection ring and the inner wall of the chimney.

[0013] Preferably, the connector includes a support rod, the two ends of which are connected to the inner wall of the chimney, and the middle of the support rod is provided with a central hole for connecting with a central shaft.

[0014] Preferably, an anti-repatriation component is provided at the bottom of the oral cavity; The anti-return-slag assembly includes a cylindrical surface perpendicular to the bottom of the inlet cavity. The cylindrical surface is connected to the inner surface of the inlet cavity and is coaxially arranged with the smoke outlet. A conical surface is coaxially arranged on the outer wall of the cylindrical surface. The small end of the conical surface is connected to the top of the cylindrical surface, and the large end is located at the bottom of the inlet cavity. The conical surface is close to the inlet and is connected to the inner surface of the inlet cavity.

[0015] The beneficial effects of this invention are: (1) The present invention uses a fume extraction mechanism surrounding the outside of the gun body to extract the welding fumes generated at the welding point, thereby reducing the amount of welding fumes that drift into the air, thus protecting the environment and ensuring the health of workers. (2) In this invention, the linkage height tilt adjustment mechanism is adapted to adjust the height of the telescopic cylinder and the welding fume inlet mechanism as well as the tilt angle of the welding fume inlet mechanism so that the welding torch nozzle can adapt to different shapes around the welding position. (3) When the present invention is used, when the welding fume passes through the welding fume channel, it will form a spiral centrifugal motion along the spiral path based on the setting of the spiral turbulence blades. Since the welding slag particles have a large density, the spiral centrifugal force is large. During the spiral motion, it will be thrown to the inner wall of the fume extraction tube and then fall down to the slag collection tank along the inner wall of the fume extraction tube. That is, the turbulence slag removal mechanism plays the role of removing part of the welding slag in the welding fume, reducing the damage of welding slag to the components in the subsequent welding fume dust collector. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0017] Figure 1 This is a three-dimensional schematic diagram of the structure of the gas curtain welding torch nozzle applicable to different welding morphologies according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the structure of the gas curtain welding torch nozzle applicable to different welding morphologies according to the present invention. Figure 1 ; Figure 3 This is a schematic top view of the structure of the gas curtain welding torch nozzle of the present invention, which is applicable to different welding morphologies; Figure 4 This is a schematic diagram of the welding fume inlet mechanism in this invention; Figure 5 This is a schematic diagram of the turbulence cooling mechanism in this invention; Figure 6 This invention is in Figure 3 A schematic diagram of the AA-direction sectional view applicable when the area around the welding position is a plane; Figure 7 This is a schematic diagram of the gas curtain welding torch nozzle of the present invention, which is applicable to different welding morphologies when the welding position is concave. in: 1. Muzzle body; 2. Fume extraction mechanism; 21. Welding fume channel; 22. Fume extraction pipe; 221. Fixing base; 222. Connecting rod; 223. Guide groove; 23. Telescopic cylinder; 231. Guide column; 3. Welding fume inlet mechanism; 31. Inlet chamber; 311. Suction inlet; 312. Fume outlet; 32. Mounting plate; 33. Hinge shaft; 34. Anti-slag back assembly; 341. Cylindrical section; 342. Conical surface; 4. Height adjustment cylinder; 5. Tilt adjustment cylinder; 6. Turbulence slag removal mechanism; 61. Central shaft; 62. Spiral turbulence blades; 63. Slag collection ring; 64. Slag collection trough; 7. Connecting parts. Detailed Implementation

[0018] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0021] In this invention, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1-5 As shown, an air curtain welding torch nozzle suitable for different welding morphologies includes a nozzle body 1, which is the nozzle part of the welding torch and is existing technology. Several fume extraction mechanisms 2 are evenly arranged around the outside of the nozzle body 1 in the circumferential direction. A welding fume channel 21 is arranged inside the fume extraction mechanism 2. The top of the welding fume channel 21 is connected to the inlet of a welding fume dust collector, which is existing technology and will not be described in detail here. The bottom end of the fume extraction mechanism 2 is hinged to a welding fume inlet mechanism 3. The welding fume inlet mechanism 3 is provided with an inlet cavity 31. The inlet 311 of the inlet cavity 31 faces the welding position, and the outlet 312 of the inlet cavity 31 faces the bottom inlet of the welding fume channel 21. The bottom height of the smoke extraction mechanism 2 is adjustable; The tilt angle of the welding fume inlet mechanism 3 is adjustable, and the tilt angle of the welding fume inlet mechanism 3 refers to the angle with the horizontal plane.

[0024] Preferably, the smoking mechanism 2 includes a smoking tube 22 fixedly mounted on the muzzle body 1 and a telescopic tube 23 slidably fitted on the lower part of the outer side wall of the smoking tube 22; The inner cavity of the fume extractor 22 and the inner cavity of the telescopic cylinder 23 form a welding fume channel 21; The telescopic cylinder 23 and the welding fume inlet mechanism 3 are both connected to the linkage height and tilt angle adjustment mechanism, which is used to adjust the bottom height of the fume extraction mechanism 2 and the tilt angle of the welding fume inlet mechanism 3.

[0025] Preferably, the smoke tube 22 is connected to the side wall of the muzzle body 1 via a fixing seat 221. The lower end of the fixing seat 221 is provided with two connecting rods 222 surrounding the outside of the smoke tube 22. The connecting rods 222 are provided with guide grooves 223 extending in the vertical direction. Two guide posts 231 are provided at the top of the outer side wall of the telescopic cylinder 23. The guide posts 231 extend outward into the corresponding guide grooves 223, and the central axis of the guide posts 231 intersects the central axis of the telescopic cylinder 23 perpendicularly.

[0026] The cooperation between the guide post 231 and the guide groove 223 serves two purposes: firstly, it provides guidance and limits for the vertical movement of the telescopic cylinder 23; secondly, it prevents the telescopic cylinder 23 from rotating in the circumferential direction.

[0027] Preferably, the top of the welding fume inlet mechanism 3 is provided with two mounting plates 32, and a hinge shaft 33 is provided on the opposite side of the two mounting plates 32; the bottom of the outer wall of the telescopic cylinder 23 is provided with two hinge holes, and the hinge shaft 33 is hinged to the corresponding hinge holes.

[0028] Specifically, the smoke outlet 312 is located between the two mounting plates 32.

[0029] Preferably, the linkage height and tilt adjustment mechanism includes a height adjustment cylinder 4 and a tilt adjustment cylinder 5; The upper end of the cylinder shell of the height adjusting cylinder 4 is hinged to the fixed base 221, and the end of the piston rod of the height adjusting cylinder 4 is hinged to the guide post 231; specifically, two height adjusting cylinders 4 are provided on each telescopic cylinder 23. The upper end of the cylinder shell of the tilt adjustment cylinder 5 is hinged to the fixed base 221, and the end of the piston rod of the tilt adjustment cylinder 5 is hinged to the top of the welding fume inlet mechanism 3. Specifically, the hinge position between the piston rod of the tilt adjustment cylinder 5 and the welding fume inlet mechanism 3 is closer to the muzzle body 1 than the smoke outlet 312.

[0030] When the piston rod of the height adjusting cylinder 4 extends downward and the piston rod of the tilt adjusting cylinder 5 extends downward in coordination, the telescopic cylinder 23 moves downward, that is, the bottom end of the fume extraction mechanism 2 moves downward; when the piston rod of the height adjusting cylinder 4 retracts upward and the piston rod of the tilt adjusting cylinder 5 retracts upward in coordination, the telescopic cylinder 23 moves upward, that is, the bottom end of the fume extraction mechanism 2 moves upward; when the piston rod of the tilt adjusting cylinder 5 extends and retracts up and down independently or when the piston rods of the tilt adjusting cylinder 5 and the height adjusting cylinder 4 move in opposite directions, the welding fume inlet mechanism 3 rotates around the hinge shaft 33, thereby realizing tilt adjustment to adapt to the surrounding morphology of different welded parts.

[0031] Preferably, the welding fume inlet mechanism 3 has an arc-shaped structure on the side near the central axis of the nozzle body 1, and the suction port 311 is located on the arc-shaped side of the welding fume inlet mechanism 3.

[0032] Preferably, the chimney 22 is equipped with a turbulence removal mechanism 6.

[0033] Preferably, the turbulence removal mechanism 6 includes a central shaft 61, on which spiral turbulence blades 62 are provided. The central shaft 61 is coaxially arranged with the chimney 22. Both ends of the central shaft 61 are connected to the connecting member 7, and the connecting member 7 is connected to the inner wall of the chimney 22. A slag collection ring 63 is coaxially provided at the bottom of the inner wall of the chimney 22, and a slag collection groove 64 is formed between the slag collection ring 63 and the inner wall of the chimney 22.

[0034] Preferably, the connector 7 includes a support rod, the two ends of which are connected to the inner wall of the chimney 22, and the middle part of the support rod is provided with a central hole for connecting with the central shaft 61.

[0035] When welding fumes pass through the welding fume channel 21, they will form a spiral centrifugal motion along the spiral path due to the setting of the spiral turbulence blades 62. Since the welding slag particles have a large density, the spiral centrifugal force is large. During the spiral motion, the slag will be thrown against the inner wall of the fume extraction cylinder 22 and then fall down into the slag collection tank 64. That is, the turbulence slag removal mechanism 6 in this application plays the role of removing part of the welding slag in the welding fume, reducing the damage of welding slag to the components in the subsequent welding fume dust collector.

[0036] Preferably, an anti-repatriation component 34 is provided at the bottom of the oral cavity 31; The anti-return-slag assembly 34 includes a cylindrical surface 341 perpendicular to the bottom of the inlet cavity 31. The cylindrical surface 341 is in contact with the inner surface of the inlet cavity 31. The cylindrical surface 341 is coaxially arranged with the smoke outlet 312. A conical surface 342 is coaxially arranged on the outer wall of the cylindrical surface 341. The small end of the conical surface 342 is in contact with the top of the cylindrical surface 341, and the large end is located on the bottom of the inlet cavity 31. The conical surface 342 is close to the suction port 311 and is in contact with the inner surface of the inlet cavity 31.

[0037] When the welding slag particles fall into the welding fume inlet mechanism 3, a cylindrical surface 341 provides a certain degree of obstruction to the falling welding slag, preventing it from returning to the welding point; at the same time, the conical surface 342 does not affect the intake of welding fumes.

[0038] An air curtain welding torch nozzle suitable for different welding morphologies is specifically implemented as follows: In use, the height adjustment cylinder 4 and the tilt adjustment cylinder 5 are adapted to adjust the height of the telescopic cylinder 23 and the welding fume inlet mechanism 3, as well as the tilt of the welding fume inlet mechanism 3, so that the welding torch nozzle is adapted to the shape around the welding position. For example, when the welding position is surrounded by a uniform plane or a convex structure higher than the surrounding environment, first adjust the telescopic cylinder 23 and the welding fume inlet mechanism 3 to their highest positions. Then lower the welding torch nozzle so that the bottom of the nozzle is at a suitable welding height. Next, adjust the height of the telescopic cylinder 23 and the welding fume inlet mechanism 3 so that the inlet 311 of the welding fume inlet mechanism 3 is as close as possible to the welding point to facilitate the intake of welding fumes. When the welding position is surrounded by a uniform plane or a convex structure higher than the surrounding environment, the welding fume inlet mechanism 3 does not need to be tilted. Even if the welding fume inlet mechanism 3 is always a horizontal structure perpendicular to the central axis of the welding fume channel 21, the vertical distance between the bottom of the welding fume inlet mechanism 3 and the welding point can be adjusted to within the range of 5-10mm. This application is applicable to air curtain welding torch nozzles with different welding morphologies, and is suitable when the welding position is surrounded by a uniform plane. Figure 6 As shown. For example, when the welding position is a recessed structure lower than the surrounding environment, first adjust the telescopic cylinder 23 and the welding fume inlet mechanism 3 to their highest positions. Then lower the welding torch nozzle so that the bottom of the nozzle is at a suitable welding height. Next, adjust the height of the telescopic cylinder 23 and the welding fume inlet mechanism 3, as well as the tilt of the mechanism, to match the tilt angle of the wall surrounding the welding point. This ensures that the suction inlet 311 of the welding fume inlet mechanism 3 is as close as possible to the welding point, facilitating the intake of welding fumes. This application applies to gas curtain welding torch nozzles with different welding morphologies, suitable for welding positions that are recessed, such as... Figure 7 As shown.

[0039] This application applies to welding operations using gas curtain welding torches with different welding morphologies. The welding shielding gas flows from top to bottom along the torch body 1 to above the welding point from the gas supply mechanism, thereby forming a vertical airflow of shielding gas above the welding point. This creates a downward pressure constraint on the welding fumes, inhibiting the upward diffusion of the welding fumes along the torch body 1, and allowing the welding fumes to only diffuse to the surrounding area. The welding fume channel 21 surrounding the torch body 1 is connected to a welding fume dust collector that can provide suction. Under the action of suction, the welding fumes that diffuse to the surrounding area are drawn into the welding fume channel 21 through the inlet 311, thereby preventing the welding fumes from spreading in the workshop. In this application, the vertical airflow of welding shielding gas and the suction effect of welding fume channel 21 in the welding fume dust collector work together to form an airflow barrier, which separates the welding operation area inside the airflow barrier from the personnel operation area outside, blocks the diffusion path of welding fumes to the personnel breathing area, further enhances the fume control effect, ensures the cleanliness of the working environment and the occupational health and safety of the operators, and at the same time, the airflow barrier also prevents air from entering the welding operation area inside, thus optimizing the weld quality.

[0040] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they are not intended to limit the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A gas curtain welding torch nozzle suitable for different welding morphologies, characterized in that, The device includes a muzzle body, and several fume extraction mechanisms are evenly arranged around the outside of the muzzle body. A welding fume channel is provided inside the fume extraction mechanism, and the top of the welding fume channel is connected to the inlet of a welding fume dust collector. The bottom end of the fume extraction mechanism is hinged to a welding fume inlet mechanism. The welding fume inlet mechanism has an inlet chamber inside. The inlet of the inlet chamber faces the welding position, and the outlet of the inlet chamber faces the bottom inlet of the welding fume channel. The bottom height of the smoke extraction mechanism is adjustable; The tilt angle of the welding fume inlet mechanism is adjustable; The smoking mechanism includes a smoking tube fixedly mounted on the muzzle body and a telescopic tube that slides on the lower part of the outer wall of the smoking tube. The inner cavity of the smoke extraction cylinder and the inner cavity of the telescopic cylinder form a welding fume channel; The telescopic cylinder and the welding fume inlet mechanism are both connected to the linkage height and tilt angle adjustment mechanism, which is used to adjust the bottom height of the fume extraction mechanism and the tilt angle of the welding fume inlet mechanism. The smoke tube is connected to the side wall of the muzzle body via a fixed base. The lower end of the fixed base is provided with two connecting rods surrounding the outside of the smoke tube. The connecting rods are provided with guide grooves extending in the vertical direction. Two guide posts are provided at the top of the outer side wall of the telescopic cylinder, and the guide posts extend outward into the corresponding guide grooves; The linkage height and tilt adjustment mechanism includes a height adjustment cylinder and a tilt adjustment cylinder. The upper end of the cylinder shell of the height adjusting cylinder is hinged to the fixed seat, and the end of the piston rod of the height adjusting cylinder is hinged to the guide column; The upper end of the cylinder shell of the tilt adjustment cylinder is hinged to the fixed base, and the end of the piston rod of the tilt adjustment cylinder is hinged to the top of the welding fume inlet mechanism.

2. The gas curtain welding torch nozzle as described in claim 1, suitable for different welding morphologies, is characterized in that... The welding fume inlet mechanism has two mounting plates at its top, and a hinge shaft is provided on one side of the two mounting plates facing each other; the bottom of the outer wall of the telescopic cylinder has two hinge holes, and the hinge shaft is hinged to the corresponding hinge holes.

3. The gas curtain welding torch nozzle as described in claim 1, suitable for different welding morphologies, is characterized in that... The welding fume inlet mechanism has an arc-shaped structure on the side near the central axis of the nozzle body, and the suction port is located on the arc-shaped side of the welding fume inlet mechanism.

4. The gas curtain welding torch nozzle as described in claim 1, suitable for different welding morphologies, is characterized in that... The chimney is equipped with a turbulence removal mechanism.

5. The gas curtain welding torch nozzle as described in claim 4, suitable for different welding morphologies, characterized in that, The turbulence removal mechanism includes a central shaft with spiral turbulence blades on it. Both ends of the central shaft are connected to connecting parts, which are connected to the inner wall of the chimney. A slag collection ring is coaxially arranged at the bottom of the inner wall of the chimney, and a slag collection groove is formed between the slag collection ring and the inner wall of the chimney.

6. The gas curtain welding torch nozzle as described in claim 5, suitable for different welding morphologies, characterized in that, The connector includes a support rod, the two ends of which are connected to the inner wall of the chimney, and the middle of the support rod is provided with a central hole for connecting with the central shaft.

7. The gas curtain welding torch nozzle as described in claim 1, suitable for different welding morphologies, is characterized in that... An anti-return component is provided at the bottom of the oral cavity; The anti-return-slag assembly includes a cylindrical surface perpendicular to the bottom of the inlet cavity. The cylindrical surface is connected to the inner surface of the inlet cavity and is coaxially arranged with the smoke outlet. A conical surface is coaxially arranged on the outer wall of the cylindrical surface. The small end of the conical surface is connected to the top of the cylindrical surface, and the large end is located at the bottom of the inlet cavity. The conical surface is close to the inlet and is connected to the inner surface of the inlet cavity.

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