Multi-axis gantry welder

Abstract

The application discloses a multi-axis gantry welding machine which comprises a base, a supporting plate, a purification structure, a flow guide structure and a linkage structure, the upper end of the base is provided with a multi-axis gantry, the inside of the multi-axis gantry is provided with a multi-degree-of-freedom welding robot, the inside of the supporting plate is throughly provided with a sleeve, the lower end of the sleeve is provided with a suction cover which is sleeved on the outside of the upper end of the multi-axis gantry, the upper end of the supporting plate is respectively provided with a first machine shell and a second machine shell, the inside of the sleeve is provided with a grid cylinder, the outer wall of the grid cylinder is provided with helical blades, the inside of the base is provided with a hollow cavity, the inside of the upper end of the base is provided with a plurality of air holes which are distributed in a rectangular array and penetrate through the cavity, the inner walls of the two sides of the multi-axis gantry are both provided with air supply boxes, and the upper end of each air supply box is throughly provided with a nozzle which is inclined to the center of the suction cover. The multi-axis gantry welding machine provided by the application blows the harmful gas generated by the welding part upward, so that the harmful gas generated in the welding process is prevented from easily diffusing to the surroundings.

Description

Technical Field

[0001] This invention belongs to the field of welding technology in marine oil engineering, and particularly relates to a multi-axis gantry welding machine. Background Technology

[0002] Multi-axis gantry welding machines are widely used in heavy industry. With the development of intelligent technology, robotic welding arms are used in conjunction with gantry frames to weld large workpieces. Multi-axis gantry frames can provide lateral and longitudinal movement, while robotic welding arms provide greater flexibility during the welding process. Combining these two types of welding machines can fully utilize their advantages and adapt to welding workpieces of different shapes and sizes. Welding large workpieces can also lead to an increase in the generation of harmful gases during welding.

[0003] A search revealed CN218638906U, which discloses a gantry-type multi-axis welding robot. The robot includes two parallel walking rails, two vertical beams, and a multi-axis robot body. The two walking rails are parallel to each other, and the two vertical beams are installed at the output ends of the walking rails. An adjustment component is installed between the two vertical beams. This invention, through the cooperation of the adjustment component and the walking rails, enables stable adjustment of the multi-axis robot body along multiple axes (X, Y, and Z), further expanding the processing range of the multi-axis robot body. Simultaneously, the locking component allows for quick and easy connection and fixation of the multi-axis robot body to the equipment, and subsequent disassembly is convenient, reducing the difficulty of installation and disassembly for workers and the intensity of subsequent maintenance. It allows for the installation and fixation of the multi-axis robot body without the aid of external tools, avoiding the problems of cumbersome disassembly and high maintenance intensity associated with traditional bolt-mounted connections.

[0004] This patented technology has the advantage of easy assembly and disassembly of the multi-axis robot body during use, but there are still shortcomings in its use. Harmful gases are generated during the welding process, especially when welding large workpieces. Due to the wide diffusion range of the harmful gases generated during the welding process, traditional exhaust systems cannot effectively cover the entire welding area, resulting in insufficient and untimely treatment of harmful gases, serious environmental pollution, and harm to human health.

[0005] Therefore, there is an urgent need to design a multi-axis gantry welding machine to solve the problems mentioned above. Summary of the Invention

[0006] To address the technical problem mentioned in the background art—that the harmful gases generated during welding have a wide diffusion range and traditional exhaust systems cannot effectively cover the entire welding area, resulting in insufficient and untimely treatment of harmful gases—a multi-axis gantry welding machine is provided to solve the problem of insufficient and untimely treatment of harmful gases generated during welding.

[0007] To achieve the above objectives, the specific technical solution of the multi-axis gantry welding machine of the present invention is as follows:

[0008] A multi-axis gantry welding machine includes a base, a support plate, a purification structure, a flow diversion structure, and a linkage structure. A multi-axis gantry frame is mounted on the upper end of the base, and a multi-degree-of-freedom welding robot is installed inside the gantry frame. A sleeve is installed through the support plate, and a suction hood fitted onto the outer side of the upper end of the gantry frame is located at the lower end of the sleeve. A first housing and a second housing are respectively mounted on the upper end of the support plate. A mesh cylinder is installed inside the sleeve, and spiral blades are installed on the outer wall of the mesh cylinder. A hollow cavity is located inside the base, and air holes arranged in a rectangular array and penetrating the cavity are opened inside the upper end of the base. Air supply boxes are installed on the inner walls of both sides of the multi-axis gantry frame, and nozzles inclined towards the center of the suction hood are installed through the upper end of the air supply boxes. The linkage structure includes a motor fixed to the upper end of the support plate, with a rotating shaft at the motor output end. Mounting shafts are rotatably mounted inside both the first and second housings, and impellers are fitted onto the outer walls of the mounting shafts.

[0009] Furthermore, each of the four corners of the suction hood has a column installed inside, with the upper and lower ends of the column connected to the support plate and the multi-axis gantry frame, respectively.

[0010] Furthermore, the purification structure includes a top cover located at the upper end of the sleeve, which is annular, hollow inside, and whose inner wall is fitted to the outer wall of the mesh cylinder. The first housing suction end is provided with a suction pipe that penetrates the top cover.

[0011] Furthermore, a sealing plug is installed inside the upper end of the mesh cylinder, and a downwardly inclined discharge pipe is installed through the lower end of the mesh cylinder, with a control valve installed inside the discharge pipe.

[0012] Furthermore, the sides of the spiral blades are connected to the inner wall of the sleeve, activated carbon is installed inside the grid cylinder, and spiral flow channels are provided between the spiral blades.

[0013] Furthermore, the drainage structure includes a diversion box fixed at the rear end of the suction hood, an installation tube fixed below the base, and diversion nozzles that are installed through the upper end of the installation tube and the lower end of the base and are evenly distributed.

[0014] Furthermore, a third air supply pipe is installed through one end of the installation pipe, and the third air supply pipe is installed through the inside of the distribution box at one end. A spiral flexible hose is connected through the middle end of the third air supply pipe.

[0015] Furthermore, the output end of the second housing is provided with a first air supply pipe that penetrates the interior of the distribution box, and the lower side of the distribution box is provided with a second air supply pipe that is installed in communication with the air supply box.

[0016] Furthermore, the lower end of the base is provided with two sets of support legs that are equidistantly distributed, and the mounting tube is located between the support legs.

[0017] Furthermore, the impellers inside the first and second housings face opposite directions, a worm gear is provided at one end of the mounting shaft, a worm gear meshing with the worm gear is sleeved on the outer wall of the rotating shaft, a bearing bracket is provided at the upper end of the support plate, and one end of the rotating shaft is rotatably inserted into the bearing bracket.

[0018] The multi-axis gantry welding machine of the present invention has the following advantages:

[0019] 1. By installing a suction hood at the upper end of the gantry frame, the gas at the welding point is suctioned. After the harmful gas enters the sleeve, it is guided by a spiral flow channel and comes into contact with the activated carbon inside the grid cylinder along the way. The activated carbon adsorbs and purifies the harmful substances in the gas tube. The spiral flow channel makes the gas stay in the sleeve for a long time, which compresses the space occupied by the purification component and reduces the floor space. It is suitable for situations where the welding equipment is limited in size.

[0020] 2. The welding device is equipped with a flow-guiding structure. The machine base is hollow and has several air holes that connect to the outside. During welding, the machine body forms a positive pressure airflow from bottom to top, blowing the harmful gases generated by the weldment upwards. When the gas in the upward flow pipe passes through the nozzle, it is sprayed out by the upward inclined airflow from the nozzle and guided into the suction hood. This avoids the harmful gases generated by the multi-axis gantry welding machine during the welding of large workpieces from easily spreading to the surroundings. Insufficient and untimely emission of harmful gases reduces the quality of the working environment and harms the health of workers. By utilizing the positive pressure airflow and the fluid dynamics of the nozzle, the harmful gases generated by the weldment are quickly guided into the suction hood, improving the emission efficiency.

[0021] 3. At the same time, both the purification structure and the diversion structure are driven by a linkage structure, with the motor of the linkage structure being the only drive source, which reduces equipment maintenance costs and energy consumption. Attached Figure Description

[0022] Figure 1 This is a frontal first-angle three-dimensional structural schematic diagram of the multi-axis gantry welding machine of the present invention;

[0023] Figure 2 This is a front view of the second angle of the three-dimensional structure of the multi-axis gantry welding machine of the present invention;

[0024] Figure 3 This is a bottom-view three-dimensional structural diagram of the multi-axis gantry welding machine of the present invention;

[0025] Figure 4 This is a front-view three-dimensional structural schematic diagram of the linkage structure of the multi-axis gantry welding machine of the present invention;

[0026] Figure 5 This is a rear sectional three-dimensional structural schematic diagram of the first housing of the multi-axis gantry welding machine of the present invention;

[0027] Figure 6 This is a bottom-view three-dimensional structural diagram of the suction hood of the multi-axis gantry welding machine of the present invention;

[0028] Figure 7 This is a three-dimensional cross-sectional view of the inside of the sleeve and the suction hood of the multi-axis gantry welding machine of the present invention.

[0029] Figure 8 This is a top-section three-dimensional structural diagram of the sleeve of the multi-axis gantry welding machine of the present invention;

[0030] Figure 9 This is a top-view three-dimensional structural diagram of the flow-guiding structure of the multi-axis gantry welding machine of the present invention;

[0031] Figure 10 This is a three-dimensional structural schematic diagram of the nozzle of the multi-axis gantry welding machine of the present invention (main cross-sectional view).

[0032] Figure 11 This is a top-section three-dimensional structural diagram of the base of the multi-axis gantry welding machine of the present invention.

[0033] Explanation of markings in the diagram:

[0034] 100. Base; 101. Multi-axis gantry; 102. Multi-degree-of-freedom welding robot; 103. Support legs;

[0035] 200. Support plate; 201. Column;

[0036] 300. Purification structure; 301. First casing; 302. Suction pipe; 303. Sleeve; 304. Grid cylinder; 305. Spiral blades; 306. Top cover; 307. Suction hood; 308. Sealing plug; 309. Flow channel; 310. Discharge pipe;

[0037] 400. Drainage structure; 401. Second housing; 402. First air supply pipe; 403. Diverter box; 404. Second air supply pipe; 405. Air supply box; 406. Nozzle; 407. Spiral hose; 408. Third air supply pipe; 409. Mounting pipe; 410. Diverter nozzle; 411. Cavity; 412. Air hole;

[0038] 500. Linkage structure; 501. Motor; 502. Worm gear; 503. Rotating shaft; 504. Worm; 505. Bearing bracket; 506. Mounting shaft; 507. Impeller. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0041] The following is a reference to the appendix. Figure 1 To be continued Figure 11 The present invention describes a multi-axis gantry welding machine.

[0042] The multi-axis gantry welding machine of the present invention includes a base 100, a support plate 200, a purification structure 300, a flow guiding structure 400 and a linkage structure 500. A multi-axis gantry frame 101 is provided at the upper end of the base 100, and a multi-degree-of-freedom welding robot 102 is provided inside the multi-axis gantry frame 101. Two sets of support legs 103 are provided at the lower end of the base 100, and the mounting tube 409 is located between the support legs 103.

[0043] The multi-axis gantry 101 provides X, Y, and Z axis motion capabilities, enabling the multi-degree-of-freedom welding robot 102 to stably reach the designated welding position. During operation, the multi-degree-of-freedom welding robot 102 can be adjusted at multiple angles and directions, and can complete welding tasks on various surfaces of complex workpieces. The multi-axis gantry 101 and the multi-degree-of-freedom welding robot 102 can achieve collaborative operation through program control. The multi-axis gantry 101 provides a relatively fixed working platform.

[0044] The multi-degree-of-freedom welding robot 102 can perform high-precision and complex welding tasks on this platform. The combination of the two is suitable for welding large and medium-sized workpieces in heavy industry. During welding, a clamping fixture is required. It should be noted that the workpiece clamping fixture is mounted on the machine base 100 and has a travel space between it and the multi-axis gantry 101 to ensure the movement of the multi-axis gantry 101 and the use of part of the flow guiding structure 400.

[0045] In a preferred embodiment, a sleeve 303 is installed through the support plate 200. A suction hood 307 is provided at the lower end of the sleeve 303 and is sleeved on the outer side of the upper end of the multi-axis gantry frame 101. A first housing 301 and a second housing 401 are respectively provided at the upper end of the support plate 200. A mesh cylinder 304 is provided inside the sleeve 303. A spiral blade 305 is provided on the outer wall of the mesh cylinder 304. A hollow cavity 411 is provided inside the base 100. Columns 201 are installed through the four corners of the suction hood 307. The upper and lower ends of the columns 201 are connected to the support plate 200 and the multi-axis gantry frame 101, respectively.

[0046] The purification structure 300 includes a top cover 306 located at the upper end of the sleeve 303, which is annular, hollow inside, and whose inner wall is fitted to the outer wall of the grid cylinder 304. The first housing 301 is provided with a suction pipe 302 that penetrates the top cover 306 at the suction end. A sealing plug 308 is provided inside the upper end of the grid cylinder 304. A downwardly inclined discharge pipe 310 is installed through the lower end of the grid cylinder 304. A control valve is provided inside the discharge pipe 310. The sides of the spiral blades 305 are connected to the inner wall of the sleeve 303. Activated carbon is provided inside the grid cylinder 304. Spiral flow channels 309 are provided between the spiral blades 305.

[0047] When the impeller 507 inside the first housing 301 rotates, the suction force acts on the flow channel 309, causing the suction hood 307 to draw in the gas below. Harmful gases generated during welding mixed in with the gas are also drawn into the flow channel 309. The spiral flow channel 309 allows the gas to stay inside the sleeve 303 for a long time, and when flowing, it enters through the pores inside the mesh cylinder 304 and comes into contact with the activated carbon. The activated carbon adsorbs harmful substances in the gas. The spiral flow channel 309 reduces the space occupied by the purification structure 300, and on this basis, it improves the purification effect of the exhaust gas.

[0048] Furthermore, after the activated carbon becomes saturated after a period of use, the activated carbon inside the mesh cylinder 304 can be allowed to flow out along the inclined discharge pipe 310 under the action of gravity by opening the control valve. This facilitates the replacement of the activated carbon and avoids the disassembly and assembly of a large number of fixed parts of the purification structure 300, reducing the difficulty of maintenance and the labor intensity of the staff.

[0049] In a preferred embodiment, the upper end of the base 100 has air holes 412 arranged in a rectangular array and penetrating the cavity 411. The inner walls on both sides of the multi-axis gantry frame 101 are provided with air supply boxes 405. The upper end of the air supply box 405 is through-installed with nozzles 406 inclined towards the center of the suction hood 307. The diversion structure 400 includes a diversion box 403 fixed to the rear end of the suction hood 307, an installation tube 409 fixed to the lower part of the base 100, and diversion nozzles 410 that are installed through the upper end of the installation tube 409 and the lower end of the base 100 and are evenly distributed.

[0050] One end of the mounting pipe 409 is connected to a third air supply pipe 408, and one end of the third air supply pipe 408 is connected to the inside of the distribution box 403. The middle end of the third air supply pipe 408 is connected to a spiral hose 407. The output end of the second housing 401 is provided with a first air supply pipe 402 that passes through the inside of the distribution box 403. The lower side of the distribution box 403 is provided with a second air supply pipe 404 that is connected to the air supply box 405.

[0051] In the welding of heavy-duty structural components, due to the large size of the structural components and the very large volume of the multi-axis gantry 101, the suction force of the suction hood 307 is insufficient to completely extract the generated exhaust gas when the multi-degree-of-freedom welding robot 102 is welding. At this time, the gas delivered in the diversion structure 400 is diverted at multiple points. First, the positive pressure airflow is delivered from the lower right to the upper right of the air hole 412 inside the base 100, so that the exhaust gas that is diffused to the outside flows upward.

[0052] When passing through the air delivery box 405, the gas diverted to the inner wall of the air delivery box 405 is output through the nozzle 406. The opening of the nozzle 406 gradually narrows, which pressurizes the output gas and delivers the airflow upward at an angle, so that the exhaust gas guided by the rising airflow receives secondary flow assistance and enters the suction hood 307.

[0053] Combined with the suction airflow of the purification structure 300, it effectively extracts and purifies welding exhaust gases with a large diffusion area. When purifying harmful gases from welding large workpieces, larger-scale purification equipment and more complex exhaust systems are often required. This avoids the problem that the exhaust gas treatment components cannot adapt to the large-scale diffusion of exhaust gases. The harmful gases from welding are effectively purified, the working environment is improved, and the physical protection of workers is enhanced.

[0054] In a preferred embodiment, the linkage structure 500 includes a motor 501 fixed to the upper end of the support plate 200. The output end of the motor 501 is provided with a rotating shaft 503. The first housing 301 and the second housing 401 are both rotatably mounted with mounting shafts 506. The outer walls of the mounting shafts 506 are both sleeved with impellers 507. The impellers 507 inside the first housing 301 and the second housing 401 face opposite directions. One end of the mounting shaft 506 is provided with a worm gear 502. The outer wall of the rotating shaft 503 is sleeved with a worm 504 that meshes with the worm gear 502. The upper end of the support plate 200 is provided with a bearing bracket 505. One end of the rotating shaft 503 is rotatably inserted into the bearing bracket 505.

[0055] When the purification structure 300 and the diversion structure 400 are in use, the motor 501 drives the rotating shaft 503 to rotate, which in turn drives the worm gear 504 to push the worm wheel 502, and drives the mounting shaft 506 to rotate, causing the impeller 507 to rotate. The two sets of impellers 507 are driven by the same motor 501. Compared with other transmission structures, the worm gear 504 transmission system can achieve a relatively large reduction ratio, which makes the drive components relatively more compact. The worm gear 504 transmission usually produces less noise, improves the working environment, reduces energy consumption, facilitates subsequent maintenance, and reduces maintenance costs.

[0056] The working principle of the multi-axis gantry welding machine of this application is as follows:

[0057] The clamping fixture is placed on the machine base 100 to clamp the workpiece. The multi-axis gantry 101 moves, driving the multi-degree-of-freedom welding robot 102 to the designated position to weld the welding surface of the workpiece. The motor 501 operates to drive the rotating shaft 503 to rotate, which drives the two worm gears 504 to rotate. The worm gears 504 push the worm wheel 502, which drives the mounting shaft 506 to rotate. Under the rotational force of the worm wheel 502, the mounting shaft 506 drives the impeller 507 to rotate.

[0058] The first housing 301 and the second housing 401 respectively generate suction airflow and positive pressure airflow. The suction airflow enters the sleeve 303 through the suction pipe 302 and is transmitted to the suction hood 307 through the flow channel 309 to suction the space below.

[0059] Meanwhile, the positive pressure airflow is delivered to the inside of the distribution box 403 through the first air supply pipe 402, and then distributed to the inside of the two second air supply pipes 404 and the third air supply pipe 408. During the movement of the gantry, the spiral hose 407 can be stretched to ensure the effective transmission of the positive pressure airflow. The airflow enters the installation pipe 409 through the third air supply pipe 408, enters the distribution nozzle 410 through the installation pipe 409, and is output through several air holes 412. The output gas flows upward and blows the escaping airflow upward to form a positive pressure lifting airflow, preventing the airflow from spreading outside the airflow box.

[0060] Simultaneously, the airflow delivered by the second air supply pipe 404 enters the air supply box 405. When passing through the nozzle 406, the airflow flows obliquely upward, guiding the waste gas blown by the rising airflow into the suction hood 307. Through the suction force of the suction hood 307, it enters the flow channel 309 and comes into contact with the activated carbon. The activated carbon absorbs and purifies the harmful substances in the gas. After the activated carbon is saturated, the sealing plug 308 is removed, the control valve is opened, and the activated carbon is output through the discharge pipe 310. After the inside of the mesh cylinder 304 is emptied, the control valve is closed, and activated carbon is poured into the inner wall of the mesh cylinder 304. Then, the sealing plug 308 is plugged into the upper end of the mesh cylinder 304.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-axis gantry welding machine, comprising a base (100), a support plate (200), a purification structure (300), a flow guide structure (400) and a linkage structure (500), characterized in that, The upper end of the base (100) is provided with a multi-axis gantry (101), the multi-axis gantry (101) is internally provided with a multi-degree-of-freedom welding robot (102), the support plate (200) is internally provided with a sleeve (303) penetratingly installed, the lower end of the sleeve (303) is provided with a suction cover (307) sleeved on the outer side of the upper end of the multi-axis gantry (101), the upper end of the support plate (200) is respectively provided with a first machine shell (301) and a second machine shell (401), the inside of the sleeve (303) is provided with a grid cylinder (304), the outer wall of the grid cylinder (304) is provided with a spiral blade (305), the inside of the base (100) is provided with a hollow cavity (411), the upper end of the base (100) is internally provided with a gas hole (412) penetratingly arranged in a rectangular array and penetrating through the cavity (411), the inner walls of the two sides of the multi-axis gantry (101) are both provided with a gas supply box (405), the upper end of the gas supply box (405) is penetratingly provided with a nozzle (406) inclined to the center of the suction cover (307); The linkage structure (500) comprises a motor (501) fixed on the upper end of the support plate (200), the output end of the motor (501) is provided with a rotating shaft (503), the inside of the first machine shell (301) and the second machine shell (401) is both rotatingly provided with an installation shaft (506), the outer wall of the installation shaft (506) is both sleeved with an impeller (507); The purification structure (300) comprises a top cover (306) located on the upper end of the sleeve (303), annular, hollow inside, and the inner wall is sleeved on the outer wall of the grid cylinder (304), the suction end of the first machine shell (301) is provided with a suction pipe (302) penetrating through the top cover (306); The side of the spiral blade (305) is connected with the inner wall of the sleeve (303), the inside of the grid cylinder (304) is provided with activated carbon, and the spiral blade (305) is provided with a spiral flow channel (309) between them; The drainage structure (400) comprises a shunt box (403) fixed on the rear end of the suction cover (307), an installation pipe (409) fixed below the base (100), and a shunt nozzle (410) penetratingly installed in the inside of the upper end of the installation pipe (409) and the inside of the lower end of the base (100) and arranged in an equidistant manner; One end of the installation pipe (409) is penetratingly provided with a third gas supply pipe (408), one end of the third gas supply pipe (408) is penetratingly installed in the inside of the shunt box (403), and the middle end of the third gas supply pipe (408) is penetratingly connected with a spiral hose (407); The output end of the second machine shell (401) is provided with a first gas supply pipe (402) penetrating through the inside of the shunt box (403), and the lower end side of the shunt box (403) is provided with a second gas supply pipe (404) penetratingly installed with the gas supply box (405); The impellers (507) in the inside of the first machine shell (301) and the second machine shell (401) are opposite to each other, one end of the installation shaft (506) is provided with a worm gear (502), the outer wall of the rotating shaft (503) is sleeved with a worm (504) engaged with the worm gear (502), the upper end of the support plate (200) is provided with a bearing support (505), and one end of the rotating shaft (503) is rotatingly inserted into the inside of the bearing support (505).

2. The multi-axis gantry welder of claim 1, wherein, The suction hood (307) is internally provided with a stand (201) at each corner, and the upper and lower ends of the stand (201) are connected with the support plate (200) and the multi-axis gantry (101) respectively.

3. The multi-axis gantry welder of claim 1, wherein, The grid cylinder (304) is internally provided with a sealing plug (308) at the upper end, and a downwardly inclined discharge pipe (310) is internally provided with a control valve.

4. The multi-axis gantry welder of claim 1, wherein, The lower end of the machine base (100) is provided with two groups of support legs (103) distributed at equal intervals, and the installation pipe (409) is located between the support legs (103).

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