A welding smoke dust removal device for robot welding

Abstract

The present invention relates to a welding smoke dust removal device for robot welding, including a welding robot base, a welding robot swivel arm and a welding gun, the welding gun is provided with an annular cavity with a rotating end face, the rotating end face and the right end face of the annular cavity are provided with a No. 1 dust extraction pipe and a straight pipe connected to the annular cavity, and the welding robot swivel arm is provided with a No. 2 dust extraction pipe and a dust extractor connected to the No. 2 dust extraction pipe. The present invention is provided with an annular cavity with a rotating end face, a No. 1 dust extraction pipe, a straight pipe, a No. 2 dust extraction pipe provided on the rotating end face, and a corrugated hose connecting the straight pipe and the No. 2 dust extraction pipe; not only does it avoid the dust extraction pipe from twisting and flattening itself during the synchronous swinging of the welding gun, thereby improving the dust removal effect, but it can also adaptively adjust the position of the dust extraction pipe according to actual conditions, thereby avoiding the problem of interference between the dust extraction pipe and the surrounding environment.

Description

Technical Field

[0001] The invention relates to the technical field of robot welding, in particular to a welding smoke dust removal device for robot welding. Background Art

[0002] Welding robots produce a lot of welding smoke when welding. The welding smoke contains a lot of harmful gases, which can cause serious harm to the human body and lead to respiratory and lung diseases. The existing welding smoke dust removal method generally adopts a large dust hood installed on the top or a small dust extraction port installed on the robot welding gun. The dust extraction port is connected to the dust extraction pipe, and the other end of the dust extraction pipe is connected to the dust removal host. The dust removal host generates negative pressure to make the dust extraction port generate suction for the smoke. The smoke enters the dust removal host through the dust extraction pipe and is filtered by the dust removal host to purify the air.

[0003] However, installing a large dust hood is generally only suitable for open-top welding. For places that require overhead welding, such as automobile chassis, the dust removal effect of a large dust hood is greatly reduced. On the other hand, the dust extraction pipe installed on the robot welding gun is prone to bending and flattening during the synchronous movement of the robot welding gun, resulting in reduced dust removal effect or even failure to remove dust. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention proposes a welding smoke dust removal device for robot welding.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A welding smoke dust removal device for robot welding, comprising a welding robot base, a welding robot rotating arm and a welding gun, wherein the welding gun is provided with an annular cavity with a rotating end face, and a first dust extraction pipe and a straight pipe connected to the annular cavity are provided on the rotating end face and the right end face of the annular cavity, and a second dust extraction pipe and a dust extractor connected to the second dust extraction pipe are installed on the welding robot rotating arm;

[0007] The welding gun is provided with a driving assembly for rotating the end face and the No. 1 dust extraction pipe in synchronous circular rotation, and the straight-through pipe is connected to the No. 2 dust extraction pipe through a corrugated hose with a quick-release structure.

[0008] As a further improvement of the present invention, the driving assembly includes a driving motor, an inner gear ring, and a retaining ring connected to the inner gear ring, which are respectively installed on the welding gun in a fixed manner and a rotatable manner. The driving motor is connected to a gear meshing with the inner gear ring, and the retaining ring is mounted on the No. 1 dust extraction pipe.

[0009] As a further improvement of the present invention, an annular rotation groove is provided on the side wall of the inner gear ring, and a support frame fixedly installed on the welding gun is slidably mounted in the annular rotation groove.

[0010] As a further improvement of the present invention, an activated carbon filter is provided in the annular cavity.

[0011] As a further improvement of the present invention, both ends of the corrugated hose are provided with first threaded ports which rotate relative to the corrugated hose.

[0012] As a further improvement of the present invention, the ends of the No. 1 dust extraction pipe and the No. 2 dust extraction pipe are both provided with a second threaded port adapted to be connected to the corrugated hose.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides an annular cavity with a rotating end face, a No. 1 dust extraction pipe, a straight pipe, a No. 2 dust extraction pipe, and a corrugated hose connecting the straight pipe and the No. 2 dust extraction pipe, which are arranged on the rotating end face; not only does it avoid the dust extraction pipe from twisting and flattening itself during the synchronous swinging of the welding gun, thereby improving the dust removal effect, but it can also adaptively adjust the position of the dust extraction pipe according to actual conditions, thereby avoiding the problem of interference between the dust extraction pipe and the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of position I in FIG.

[0018] Figure 3 for Figure 1 AA cross-sectional view in FIG.

[0019] Figure 4 for Figure 1 BB cross-sectional view in FIG.

[0020] Figure 5 for Figure 3 Schematic diagram of CC cross-section in . DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, a welding smoke dust removal device for robot welding includes a welding robot base 15, a welding robot arm 14 and a welding gun 1. The welding robot arm 14 can rotate in a circle along its own axis on the welding robot base 15, and the welding gun 1 can swing up and down around the hinge point with the welding robot arm 14.

[0023] The welding gun 1 is provided with an annular cavity 7 with a rotating end face 71, and the annular cavity 7 is fixedly connected to the outer surface of the welding gun 1. The rotating end face 71 is installed at the left end of the annular cavity 7 through a bearing, and can rotate around the central axis of the rotating end face 71. The rotating end face 71 and the right end face of the annular cavity 7 are provided with a No. 1 dust extraction pipe 2 and a straight pipe 6 connected to the annular cavity 7. The left end of the No. 1 dust extraction pipe 2 is provided with a dust suction port 2a. The No. 1 dust extraction pipe 2 and the straight pipe 6 are both connected by screws. The first dust extraction pipe 2 can rotate synchronously with the rotating end face 71, the straight-through pipe 6 is arranged on the upper side of the right end face of the annular cavity 7, and the second dust extraction pipe 3 and the dust extractor 4 connected with the second dust extraction pipe 3 are installed on the welding robot rotating arm 14. The dust extractor 4 is fixed on the welding robot rotating arm 14, so that when the welding robot rotating arm 14 rotates, the second dust extraction pipe 3 and the dust extractor 4 remain relatively still to prevent the connection between the second dust extraction pipe 3 and the dust extractor 4 from twisting.

[0024] The welding gun 1 is provided with a driving assembly for rotating the end face 71 and the first dust extraction pipe 2 in synchronous circular rotation, and the straight-through pipe 6 is connected to the second dust extraction pipe 3 via a corrugated hose 5 with a quick-release structure.

[0025] It should be noted that, since welding smoke has a relatively high temperature, the No. 1 dust extraction pipe 2, the No. 2 dust extraction pipe 3, the corrugated hose 5 and the straight pipe 6 are all made of high temperature resistant materials.

[0026] The function of the driving assembly is that during the operation of the welding gun 1, if the No. 1 dust extraction pipe 2 above interferes with the surrounding environment, the driving assembly drives the No. 1 dust extraction pipe 2 and the rotating end face 71 to rotate to a suitable position around the central axis of the annular cavity 7 to avoid interference with the surrounding environment; by the driving assembly and the rotatable installation of the No. 1 dust extraction pipe 2, the present invention can not only remove dust but also adaptively adjust its own position, so that it can adapt to various welding environments, which greatly improves the versatility of the present invention.

[0027] The quick-release structure on the corrugated hose 5 includes first threaded ports 5a arranged at both ends of the corrugated hose 5 and capable of rotating relative to the corrugated hose 5. A connecting bearing 51 is provided between the corrugated hose 5 and the first threaded port 5a. Through the setting of the connecting bearing 51, when the first threaded port 5a is connected to the straight-through pipe 6 and the No. 2 dust extraction pipe 3, the corrugated hose 5 will not rotate with the first threaded port 5a, thereby avoiding the distortion of the corrugated hose 5 during installation and facilitating the installation of the first threaded port 5a.

[0028] The first threaded port 5a is an external threaded port, and the right end of the straight pipe 6 and the left end of the second dust extraction pipe 3 are provided with a second threaded port 5b, and the second threaded port 5b is an internal threaded port adapted to be connected to the first threaded port 5a.

[0029] The driving assembly includes a driving motor 8, an inner gear ring 9, and a retaining ring 10 connected to the inner gear ring 9, which are fixedly and rotatably mounted on the welding gun 1. Extensions are provided on both sides of the lower side of the retaining ring 10, and the extensions are fixedly mounted on the outer end surface of the inner gear ring 9 by screws. The driving motor 8 is connected to a gear 11 meshing with the inner gear ring 9, and the retaining ring 10 is mounted on the No. 1 dust extraction pipe 2.

[0030] An annular rotating groove 9a is provided on the right side wall of the inner gear ring 9, and a support frame 12 fixedly installed on the welding gun 1 is slidably installed in the annular rotating groove 9a, and four support frames 12 are provided.

[0031] Furthermore, an activated carbon filter 13 is provided in the annular cavity 7 , and the activated carbon filter 13 can preliminarily filter larger particles in the welding smoke, thereby increasing the service life of the dust extractor 4 .

[0032] Working process:

[0033] When the welding gun 1 is performing welding work, the vacuum cleaner 4 is started, and the negative pressure generated causes the vacuum suction port 2a to generate suction on the welding smoke generated by the welding of the welding gun 1, and the welding smoke is sucked into the No. 1 vacuum pipe 2, and then passes through the activated carbon filter 13 in the annular cavity 7 for preliminary filtration, and then passes through the corrugated hose 5 and the No. 2 vacuum pipe 3, enters the vacuum cleaner 4, and is finally discharged after being filtered in the vacuum cleaner 4.

[0034] When the welding gun 1 rotates around the hinge point on the welding robot's rotating arm 14 and the No. 1 dust extraction pipe 2 above interferes with the surrounding environment, the externally connected control system controls the drive motor 8 to drive the gear 11 to drive the inner ring gear 9 to rotate. The inner ring gear 9 drives the No. 1 dust extraction pipe 2 and the rotating end face 71 through the retaining ring 10 to rotate around the center of the inner ring gear 9 to a suitable angle, avoiding interference with the surrounding environment, thereby improving the adaptability of the present invention to various welding environments.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding smoke dust removal device for robot welding, comprising a welding robot base (15), a welding robot rotating arm (14) and a welding gun (1), characterized in that: The welding gun (1) is provided with an annular cavity (7) with a rotating end surface (71); a first dust extraction pipe (2) and a straight pipe (6) communicating with the annular cavity (7) are provided on the rotating end surface (71) and the right end surface of the annular cavity (7); a second dust extraction pipe (3) and a dust extractor (4) connected to the second dust extraction pipe (3) are installed on the rotating arm (14) of the welding robot; The welding gun (1) is provided with a driving assembly for rotating the end face (71) and the first dust extraction pipe (2) in synchronous circular rotation, and the straight-through pipe (6) is connected to the second dust extraction pipe (3) via a corrugated hose (5) with a quick-release structure; The driving assembly comprises a driving motor (8) fixedly and rotatably mounted on the welding gun (1), an inner gear ring (9), and a snap ring (10) connected to the inner gear ring (9); the driving motor (8) is connected to a gear (11) meshing with the inner gear ring (9); and the snap ring (10) is sleeved on a first dust extraction pipe (2); An annular rotating groove (9a) is provided on the side wall of the inner gear ring (9), and a support frame (12) fixedly mounted on the welding gun (1) is slidably mounted in the annular rotating groove (9a); An activated carbon filter (13) is provided in the annular cavity (7); Both ends of the corrugated hose (5) are provided with first threaded ports (5a) that rotate relative to the corrugated hose (5); The ends of the straight-through pipe (6) and the second dust extraction pipe (3) are both provided with a second threaded port (5b) adapted to be connected to the corrugated hose (5).

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