Welding Robot

Abstract

A welding robot relates to the field of robot technology, including a robot body, a welding gun and a protective cover. The protective cover is mounted on the welding gun to prevent welding slag from splashing out of the protective cover. A plurality of protruding slag collecting rings are arranged from top to bottom on the inner side of the protective cover for welding slag to adhere to. By arranging the protective cover at the welding gun, most of the welding slag splashed during welding is attached to the inner side of the protective cover (the surface of the slag collecting ring is part of the inner side of the protective cover), and the slag collecting rings arranged at intervals form a plurality of compartments. The welding slag that fails to adhere or rebounds can fall into the compartments without falling out of the protective cover. The plurality of slag collecting rings also greatly increase the area of ​​the inner side of the protective cover. Compared with no slag collecting ring or only one slag collecting ring at the bottom, more welding slag can be attached and collected, thereby effectively preventing the welding slag from falling onto the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of robots, and in particular to a welding robot. Background Art

[0002] Welding robots can complete welding tasks efficiently and accurately, and are particularly suitable for large-scale, high-precision welding production lines. Under the premise of proper operation and reasonable programming, they can effectively reduce the generation of welding slag. However, although welding robots can optimize the welding process, in actual operation, when using arc welding, oxyacetylene welding and other methods, welding robots will inevitably produce splashing welding slag. The splashing welding slag will not only leave difficult-to-remove marks on the surface of the welded parts and the surrounding environment, affecting the beauty and finish of the welded parts, reducing the grade and value of the welded parts, but also increase the subsequent cleaning workload. Tools such as grinders, brushes, and hammers are needed to clean the welded parts and the environment, which consumes manpower, material resources and time, and increases production costs and risks. At the same time, when cleaning the welding slag splashed on the welded parts, it is also very likely to damage the surface and structure of the welded parts. Therefore, while optimizing the welding process and reducing the generation of welding slag, measures need to be taken to block the splashing welding slag. Summary of the invention

[0003] In view of this, the present invention provides a welding robot which can effectively block the splashing welding slag during welding.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] A welding robot includes a robot body, a welding gun and a protective cover. The protective cover is mounted on the welding gun to prevent welding slag from splashing out of the protective cover. A plurality of protruding slag collecting rings are arranged from top to bottom on the inner side of the protective cover for welding slag to adhere to. By arranging the protective cover at the welding gun, most of the welding slag splashed during welding is attached to the inner side of the protective cover (the surface of the slag collecting ring is part of the inner side of the protective cover), and the slag collecting rings arranged at intervals form a plurality of compartments. The welding slag that fails to adhere or rebounds can fall into the compartments without falling out of the protective cover. The plurality of slag collecting rings greatly increase the area of ​​the inner side of the protective cover. Compared with no slag collecting ring or only one slag collecting ring at the bottom, more welding slag can be attached and collected, thereby effectively preventing the welding slag from falling onto the workpiece.

[0006] Furthermore, it also includes a scraper and a driving mechanism for driving the protective cover to rotate. The scraper is in contact with the inner side of the protective cover. When the protective cover is driven to rotate, the scraper scrapes off the welding slag attached to the inner side of the protective cover.

[0007] Furthermore, it also includes a slag suction pipe for sucking out welding slag, the slag suction pipe is fixedly connected to the scraper, and is enclosed with the scraper and the inner side of the protective cover to form a slag suction air duct, the slag suction air duct is provided with an air inlet on the side opposite to the scraper, and the slag suction pipe is provided with a slag suction port, the slag suction port is connected to the slag suction air duct and is located on the side of the slag suction air duct close to the scraper. When the scraper scrapes off the welding slag attached to the inner side of the protective cover, the slag suction pipe draws air from the slag suction air duct through the slag suction port to suck away the scraped welding slag from the slag suction port.

[0008] Furthermore, it also includes a magnetic attraction device, which includes a plurality of adsorption magnets, each of which is attached to the outer side of the protective cover to adsorb the welding slag to the inner side of the protective cover through the action of the magnetic field.

[0009] Furthermore, the magnetic attraction device also includes a magnetizing magnet and a demagnetizing magnet, which are arranged on the outer side of the protective cover and can slide in contact with each adsorption magnet when the protective cover rotates, so as to magnetize or demagnetize the adsorption magnet with which they slide in contact. The magnetizing magnet and the demagnetizing magnet are respectively located on both sides of the scraper. Before the adsorption magnet passes through the scraper as the protective cover rotates, it first slides in contact with the demagnetizing magnet to be demagnetized to release the magnetized welding slag, and then slides in contact with the magnetizing magnet after passing through the scraper to be magnetized.

[0010] Furthermore, it also includes an exhaust device, which includes an exhaust fan and an exhaust pipe. The exhaust fan is connected to the exhaust pipe. The exhaust pipe is provided with an exhaust port, and the exhaust port is connected to the inside of the protective cover to extract the gas and smoke generated during welding.

[0011] Furthermore, the driving mechanism includes a driving motor, a driving gear and a driven gear. The driving gear is fixedly connected to the driving motor, and the driven gear is fixedly sleeved on the top of the protective cover. The driving gear and the driven gear are meshed for transmission. When scraping off the welding slag, the driving motor drives the driving gear to rotate, thereby driving the protective cover to rotate through the driven gear.

[0012] Furthermore, the slag collecting ring is tilted upwards at a certain angle toward the top of the protective cover, so that the fallen welding slag can be accumulated in the interval of the slag collecting ring under the action of gravity and the guidance of the slag collecting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the welding robot of the present invention.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the welding robot of the present invention excluding the robot body and the welding gun.

[0015] Figure 3 This is an exploded view of the welding robot of the present invention excluding the robot body and the welding gun.

[0016] Figure 4This is a cross-sectional view of the welding robot of the present invention excluding the robot body and the welding gun.

[0017] Figure 5 for Figure 4 A magnified schematic diagram of center A.

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper and the slag suction pipe.

[0019] Figure 7 This is a cross-sectional view of the slag suction pipe.

[0020] Figure 8 A view from one perspective of the protective cover and housing.

[0021] Fig. 9 for Figure 8 Cross-sectional view along the AA direction.

[0022] Fig.10 for Fig. 9 A magnified schematic diagram of point B in the middle.

[0023] Reference numerals include:

[0024] Protective cover 1, slag collecting ring 11, outer shell 12;

[0025] Scraper 2, slag suction pipe 3, slag suction port 31, slag suction air duct 32;

[0026] A driving motor 4, a driving gear 41, a driven gear 42, a motor seat 43, and a bearing 44;

[0027] A magnetic attraction device 5, an adsorption magnet 51, a magnetizing magnet 52, and a demagnetizing magnet 53;

[0028] Air extraction pipeline 6, air extraction port 61, welding gun 7, robot body 8. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific embodiments.

[0030] like Figure 1-Figure 3As shown, the welding robot of this embodiment includes a robot body 8 and a welding gun 7. The welding gun 7 is provided with a protective cover 1 for blocking welding slag splashing. The protective cover 1 is sleeved on the welding gun 7 through the motor seat 43. The outer side of the protective cover 1 is provided with a shell 12. The inner side of the protective cover 1 is provided with multiple protruding slag collecting rings 11 from top to bottom for welding slag to adhere to. By arranging the protective cover 1 at the welding gun 7, most of the welding slag splashed during welding is attached to the inner side of the protective cover 1 (the surface of the slag collecting ring 11 belongs to a part of the inner side of the protective cover 1), and the slag collecting rings 11 arranged at intervals form multiple compartments. Those welding slags that fail to adhere or rebound can fall into the compartments without falling out of the protective cover 1. The multiple slag collecting rings 11 also greatly increase the area of ​​the inner side of the protective cover 1. Compared with no slag collecting ring 11 or only one slag collecting ring 11 at the bottom, more welding slag can be attached and collected, thereby effectively preventing the welding slag from falling on the workpiece.

[0031] like Figure 4 As shown, the slag collecting ring 11 of this embodiment is tilted upward at a certain angle toward the top of the protective cover 1. The specific tilting angle is set according to the actual welding method and working conditions, so that the fallen welding slag can be accumulated in the gap of the slag collecting ring 11 under the guidance of the slag collecting ring 11 and gravity. When the welding slag that fails to adhere to the inner side of the protective cover 1 falls into the gap of the slag collecting ring 11, the inclined surface formed by the tilted slag collecting ring 11 will catch the welding slag, which can achieve a better collection effect than the flat slag collecting ring 11, especially for the rebounding welding slag, and can also effectively prevent the welding slag from falling out of the protective cover 1 due to free rolling.

[0032] As welding continues, welding slag in the protective cover 1 will accumulate more and more, so it is necessary to clean the welding slag attached to the inner side of the protective cover 1, such as Figure 3 and Figure 6 As shown, the welding robot of this embodiment also includes a scraper 2 and a driving mechanism for driving the protective cover 1 to rotate. The protective cover 1 is rotatably connected to the motor seat 43 through a bearing 44. The scraper 2 is fitted with the inner side of the protective cover 1. The scraper 2 is provided with a gap corresponding to the slag collecting ring 11, so that it can extend into the gap of the slag collecting ring 11. When the protective cover 1 is driven to rotate, the scraper 2 scrapes off the welding slag attached to the inner side of the protective cover 1. The driving mechanism includes a driving motor 4, a driving gear 41 and a driven gear 42. The driving gear 41 is fixedly connected to the driving motor 4, and the driven gear 42 is fixedly sleeved on the top of the protective cover 1. The driving gear 41 and the driven gear 42 are meshed and driven. When scraping off the welding slag, the driving motor 4 drives the driving gear 41 to rotate, thereby driving the protective cover 1 to rotate through the driven gear 42. When it is necessary to clean the protective cover 1, it is only necessary to drive the protective cover 1 to rotate, and the welding slag attached to the inner side of the protective cover 1 will be scraped off when passing through the scraper 2, without manual scraping, which is convenient for subsequent cleaning of the protective cover 1.

[0033] like Figure 3 and Figure 4 As shown, the welding robot of this embodiment further includes a slag suction pipe 3 for sucking out welding slag, and the slag suction pipe 3 is connected to an external suction power source, such as a suction pump, as shown in FIG. Figure 6 As shown, in order to achieve a better slag suction effect, the slag suction pipe 3 and the scraper 2 are fixedly connected to form a whole and have corresponding shapes, as shown in FIG. Figure 5 , Figure 8-Figure 10 As shown, the slag suction pipe 3, the scraper 2 and the inner side of the protective cover 1 (including the outer surface of the slag collecting ring 11) are enclosed together to form a slag suction air duct 32. The slag suction air duct 32 is provided with an air inlet ( Fig.10 The slag suction pipe 3 is provided with a slag suction port 31, which is connected to the slag suction air duct 32 and is located on the side of the slag suction air duct 32 close to the scraper 2. When the scraper 2 scrapes off the welding slag attached to the inner side of the protective cover 1, the slag suction pipe 3 draws air from the slag suction air duct 32 through the slag suction port 31, forming an airflow from the air inlet a to the slag suction port 31, thereby sucking away the scraped welding slag. By setting up the slag suction pipe 3 to suck away the scraped welding slag, there is no need for manual cleaning. When the scraper 2 scrapes the welding slag on the inner side of the protective cover 1, the welding slag may bounce in all directions, causing part of the welding slag to bounce out of the air intake range, or even bounce out of the protective cover 1 and fall onto the workpiece. The slag suction duct 32 formed by the scraper 2 and the inner side of the protective cover 1 can effectively limit the bouncing range and direction of the scraped welding slag, thereby reducing the possibility of the scraped welding slag bouncing out of the air intake range. The slag suction port 31 is arranged on the side close to the scraper 2, so that most of the welding slag can be sucked away immediately after being scraped. Moreover, when the slag suction port 31 is inhaled, the airflow direction formed in the slag suction duct 32 is from the air inlet a to the slag suction port 31, which increases the difficulty of the welding slag bouncing out of the slag suction duct 32. Even if part of the scraped welding slag is to be ejected from the air intake range, it will be blown back into the slag suction duct 32 by the airflow, thereby achieving a better slag suction and cleaning effect.

[0034] When the scraper 2 scrapes off the welding slag, part of the welding slag may bounce in all directions, causing the welding slag to fall out of the protective cover 1 and cannot be sucked away and cleaned. The welding slag usually contains iron, which can be adsorbed by the magnet. Figure 2-Figure 4 The welding robot of this embodiment further includes a magnetic suction device 5, which includes a plurality of adsorption magnets 51, each of which is attached to the outer surface of the protective cover 1, so as to adsorb the welding slag to the inner surface of the protective cover 1 through the action of the magnetic field. The adsorption magnets 51 with appropriate magnetic force and the number of adsorption magnets 51 can be selected according to the situation, so that the welding slag can be adsorbed to the inner surface of the protective cover 1 by the adsorption magnets 51 after being scraped off, so as to prevent the welding slag from bouncing out of the protective cover 1 due to scraping. At the same time, the welding slag splashed onto the protective cover 1 during welding is also easily attracted by the magnet, so as to reduce the situation where the welding slag splashes and hits the protective cover 1 and bounces again and falls onto the workpiece.

[0035] When the welding slag is adsorbed by the adsorption magnet 51 to prevent it from bouncing, the existence of magnetic force may make it difficult for some welding slag to be sucked away by the slag suction pipe 3, such as Figure 3 and Fig. 9 As shown, the magnetic attraction device 5 of this embodiment also includes a magnetizing magnet 52 and a demagnetizing magnet 53, which are arranged on the outer side of the protective cover 1 and can slide and contact each adsorption magnet 51 when the protective cover 1 rotates, so as to magnetize or demagnetize the adsorption magnet 51 with which they slide and contact. The magnetic field directions of the demagnetizing magnet 53 and the magnetizing magnet 52 are opposite, wherein the magnetic field directions of the magnetizing magnet 52 and the adsorption magnet 51 are the same. The magnetizing magnet 52 and the demagnetizing magnet 53 are respectively located on both sides of the scraper 2, and can be specifically arranged according to the rotation direction of the protective cover 1, so that the adsorption magnet 51 slides and contacts the demagnetizing magnet 53 to be demagnetized before passing through the scraper 2 as the protective cover 1 rotates, so as to release the magnetically attracted welding slag, so that the welding slag can be easily sucked away by the slag suction pipe 3, and then slides and contacts the magnetizing magnet 52 after passing through the scraper 2 to be magnetized, so as to restore or strengthen its magnetism. It is only necessary to select suitable magnetic materials as the adsorption magnet 51 and ensure that the magnetic field strengths of the demagnetizing magnet 53 and the magnetizing magnet 52 are stronger than that of the adsorption magnet 51 .

[0036] Welding produces gases and fumes that are harmful to the human body, such as Figure 3 and Figure 4 As shown, the welding robot of this embodiment includes an exhaust device, which includes an exhaust fan (not shown in the figure) and an exhaust pipe 6. The exhaust fan is connected to the exhaust pipe 6. The exhaust pipe 6 is provided with an exhaust port 61. The exhaust port 61 is connected to the inside of the protective cover 1 to extract the gas and smoke generated during welding. By setting up the exhaust device, the harmful gas and smoke generated are extracted, thereby reducing the risk of workers inhaling harmful gas and smoke, and improving the working environment.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A welding robot, including a welding gun, characterized in that: The protective cover is also included. The protective cover is sleeved on the welding gun to prevent welding slag from splashing out of the protective cover. A plurality of protruding slag collecting rings are arranged at intervals from top to bottom on the inner side of the protective cover for welding slag to adhere to. It also includes a scraper and a driving mechanism for driving the protective cover to rotate, the scraper is in contact with the inner side of the protective cover, and when the protective cover is driven to rotate, the scraper scrapes off the welding slag attached to the inner side of the protective cover; The slag suction pipe is fixedly connected to the scraper and enclosed with the scraper and the inner side of the protective cover to form a slag suction air duct. The slag suction air duct is provided with an air inlet on the side opposite to the scraper. The slag suction pipe is provided with a slag suction port, which is connected to the slag suction air duct and is located on the side of the slag suction air duct close to the scraper. When the scraper scrapes off the welding slag attached to the inner side of the protective cover, the slag suction pipe draws air from the slag suction air duct through the slag suction port to suck away the scraped welding slag from the slag suction port. It also includes a magnetic attraction device, which includes a plurality of adsorption magnets, each of which is attached to the outer side of the protective cover to adsorb the welding slag to the inner side of the protective cover through the action of the magnetic field; The magnetic attraction device also includes a magnetizing magnet and a demagnetizing magnet, which are arranged on the outer side of the protective cover and can slide and contact each adsorption magnet respectively when the protective cover rotates, so as to magnetize or demagnetize the adsorption magnet with which they slide and contact. The magnetizing magnet and the demagnetizing magnet are respectively located on both sides of the scraper. Before the adsorption magnet passes through the scraper as the protective cover rotates, it first slides and contacts the demagnetizing magnet to be demagnetized to release the magnetized welding slag, and then slides and contacts the magnetizing magnet after passing through the scraper to be magnetized.

2. The welding robot according to claim 1, characterized in that: It also includes an exhaust device, which includes an exhaust fan and an exhaust pipe. The exhaust fan is connected to the exhaust pipe. The exhaust pipe is provided with an exhaust port, and the exhaust port is connected to the inside of the protective cover to extract the gas and smoke generated during welding.

3. The welding robot according to claim 1, characterized in that: The driving mechanism includes a driving motor, a driving gear and a driven gear. The driving gear is fixedly connected to the driving motor, and the driven gear is fixedly sleeved on the top of the protective cover. The driving gear and the driven gear are meshed and transmitted. When scraping off the welding slag, the driving motor drives the driving gear to rotate, thereby driving the protective cover to rotate through the driven gear.

4. The welding robot according to claim 1, characterized in that: The slag collecting ring is tilted upward at a certain angle toward the top of the protective cover so that the fallen welding slag can be accumulated in the interval of the slag collecting ring under the action of gravity and the guidance of the slag collecting ring.

Images