Intelligent welding equipment

Abstract

The utility model discloses intelligent welding equipment, which relates to the technical field of welding and comprises a machining table, a clamping component is mounted on the machining table, the clamping component is used for positioning and clamping a workpiece to be welded on the machining table, an electric sliding rail is mounted on the machining table, and the clamping component is used for clamping the workpiece to be welded on the machining table. The mechanical arm is mounted at the moving end of the electric sliding rail, the mounting frame is mounted at the execution tail end of the mechanical arm, the welding head is mounted on the mounting frame and used for executing welding operation, and the scanning and monitoring system is mounted on the mounting frame and used for scanning the welding head. The smoke collecting mechanism is used for acquiring the three-dimensional shape of a workpiece, a temperature field of a welding area and spectrum information in the welding process, and the smoke collecting mechanism is used for collecting and purifying smoke dust and harmful gas generated in the welding process; by means of the scanning and monitoring system installed on the mechanical arm and matching with the exclusive smoke collecting mechanism, accurate control over the welding process and green purification of the working environment are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field, concretely is a kind of intelligent welding equipment. BACKGROUND

[0002] In the white body production link of automobile manufacturing industry, welding process is the core process that determines the structure strength, sealing and appearance quality of vehicle body. White body is formed by hundreds of stamping parts through welding splicing, covers multiple key components such as door inner plate, chassis girder, column, top cover, and its welding quality is directly related to vehicle safety and service life. With the promotion of the lightweight trend of automobile, new materials such as high-strength steel and aluminum alloy are increasingly widely used in white body, while consumers' requirements for body appearance flatness and weld consistency are continuously improved, and traditional welding method has been difficult to meet the high-precision and high-stability needs of modern automobile mass production.

[0003] Traditional white body welding relies on manual operation or simple automatic equipment, and there are many pain points to be solved. The quality stability of manual welding is easily affected by the skill level and fatigue degree of the operator, and problems such as uneven weld height and oxidation discoloration often occur in mass production, which requires additional investment of a large amount of manpower for polishing and correction, seriously affecting production efficiency.

[0004] In terms of welding process control and quality traceability, the traditional method lacks effective real-time monitoring means. In the welding process, key information such as temperature change and molten pool state of the welding area cannot be accurately captured, and welding defects such as pores and cracks cannot be found in real time, and often need to be investigated after the welding is completed through destructive testing or ultrasonic testing, which not only increases the detection cost, but also may cause unqualified products to flow into subsequent processes, causing resource waste. In addition, a large amount of smoke containing metal particles and harmful gases will be generated during the welding process of white body, and the traditional production environment only relies on the overall ventilation system of the workshop for smoke exhaust, which has low smoke exhaust efficiency, and harmful gases are easy to accumulate in the working area, which seriously endangers the health of the operators and does not meet the industry standards of green production. Therefore, the technical personnel in the art provide an intelligent welding equipment to solve the problems raised in the above background technology. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an intelligent welding equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An intelligent welding equipment comprises:

[0008] A machining table is provided with a clamping assembly for positioning and clamping a workpiece to be welded on the machining table.

[0009] An electric slide rail is installed on the machining table.

[0010] A mechanical arm is installed on the moving end of the electric slide rail.

[0011] A mounting frame is installed on the execution end of the mechanical arm.

[0012] A welding head is installed on the mounting frame for performing welding work.

[0013] A scanning and monitoring system is installed on the mounting frame for acquiring the three-dimensional topography of the workpiece, the temperature field of the welding area, and the spectral information of the welding process.

[0014] A smoke collection mechanism is used to collect and purify the smoke and harmful gases generated during the welding process.

[0015] Preferably, the clamping assembly comprises:

[0016] A placement table is fixedly installed on the machining table.

[0017] A bidirectional slide rail is installed on the placement table.

[0018] Two support plates are connected to the two moving ends of the bidirectional slide rail.

[0019] Two pressure sensors are installed on the support plates.

[0020] Two clamping plates are connected to the pressure sensors, and the side of the clamping plate away from the pressure sensor is provided with a rubber layer.

[0021] Preferably, the scanning and monitoring system comprises:

[0022] A 3D structured light scanner is used to acquire the three-dimensional topography data of the workpiece to be welded.

[0023] A high-resolution infrared thermal imager is used to monitor the temperature field distribution of the welding pool and the heat-affected zone in real time.

[0024] A high-speed narrow-band laser scanner is used to analyze the plasma spectrum or reflected light signal during the welding process.

[0025] Preferably, the smoke collection mechanism comprises:

[0026] A collection cover is installed on the upper end of the welding head.

[0027] A filter cartridge dust collector is connected to the collecting cover through an extension pipe;

[0028] A filter box is connected to the filter cartridge dust collector through a connecting pipe;

[0029] A discharge pipe is installed at the air outlet end of the filter box;

[0030] An air pump is installed on the discharge pipe for providing air flow power;

[0031] A circulating assembly is used for gas detection circulation.

[0032] Preferably, the circulating assembly comprises:

[0033] A circulating pipe is connected to the discharge pipe and the extension pipe at two ends respectively;

[0034] A gas detector is installed in the discharge pipe for detecting the composition of the exhaust gas;

[0035] A first electric control valve is installed on the discharge pipe;

[0036] A second electric control valve is installed on the circulating pipe.

[0037] Preferably, a HEPA filter and an activated carbon adsorption layer are installed inside the filter box.

[0038] Preferably, a controller is installed on the processing table and is electrically connected between the bidirectional slide rail, the electric slide rail, the two pressure sensors, the mechanical arm, the welding head, the visual camera, the high-resolution infrared thermal imager, the high-speed narrow-band laser scanner, the filter cartridge dust collector, the gas detector and the air pump.

[0039] Compared with the prior art, the utility model has the beneficial effects that:

[0040] 1、The utility model discloses a processing table matched with a clamping assembly, an electric slide rail and a mechanical arm, which are cooperatively arranged, thereby effectively solving the problems of inaccurate workpiece positioning, limited operation range and rigid welding posture in traditional welding. The clamping assembly can accurately position and stably clamp different specifications of stamped parts of a body-in-white, avoiding workpiece deviation or deformation. The electric slide rail drives the mechanical arm to move flexibly, and in combination with the multi-degree-of-freedom adjustment capability of the mechanical arm, the welding requirements of complex curved surfaces and hidden welds of the body-in-white can be easily met, thereby greatly improving the flexibility and coverage range of welding operation. Meanwhile, the automatic operation mode eliminates the dependence on manual skills, ensures the consistency of welds in batch production, reduces subsequent polishing and correction processes, and significantly improves production efficiency.

[0041] 2、The utility model discloses a scanning and monitoring system installed on the mechanical arm, and a special flue gas collecting mechanism is matched, so that accurate control of the welding process and green purification of the working environment are realized. The scanning and monitoring system can obtain the three-dimensional appearance of the workpiece, the temperature field of the welding area and the spectrum information of the welding process in real time, accurately capture the change of the molten pool state, timely find welding defects such as pores and cracks, realize real-time tracing and early warning of the welding quality, replace the traditional post-detection mode, and reduce detection cost and resource waste. The flue gas collecting mechanism can collect and purify the smoke dust and harmful gas generated during welding. Compared with the traditional workshop overall ventilation system, the smoke purification efficiency is higher, harmful gas accumulation can be effectively avoided, the health of the operator is protected, and the industry standard of green production is met. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a front view structural schematic diagram of an intelligent welding equipment in the embodiment of the application.

[0043] Figure 2 It is a side view sectional view structural schematic diagram of an intelligent welding equipment in the embodiment of the application.

[0044] Figure 3 It is a front view sectional view structural schematic diagram of an intelligent welding equipment in the embodiment of the application.

[0045] Figure 4 It is a filter box sectional view structural schematic diagram of an intelligent welding equipment in the embodiment of the application.

[0046] Figure 5 It is Figure 4 It is an enlarged view of A in the embodiment of the application.

[0047] In the figure: 1, processing table; 2, electric sliding rail; 3, mechanical arm; 4, mounting frame; 5, welding head; 6, placing table; 7, bidirectional sliding rail; 8, support plate; 9, pressure sensor; 10, clamping plate; 11, rubber layer; 12, 3D structured light scanner; 13, high-resolution infrared thermal imager; 14, high-speed narrow-band laser scanner; 15, collecting cover; 16, filter cartridge dust collector; 17, filter box; 18, discharge pipe; 19, air pump; 20, circulating pipe; 21, gas detector; 22, first electric control valve; 23, second electric control valve; 24, HEPA filter; 25, activated carbon adsorption layer; 26, controller; 27, telescopic pipe. DETAILED DESCRIPTION

[0048] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] Please refer to Figures 1-5 The present application provides a technical solution:

[0050] An intelligent welding device comprises:

[0051] The processing table 1 is provided with a clamping assembly for positioning and clamping the workpiece to be welded on the processing table 1. The clamping assembly comprises a placement table 6, a bidirectional sliding rail 7, a support plate 8, a pressure sensor 9 and a clamping plate 10. The placement table 6 is fixedly installed on the processing table 1. The bidirectional sliding rail 7 is installed on the placement table 6. Two support plates 8 are respectively connected with two moving ends of the bidirectional sliding rail 7. Two pressure sensors 9 are installed on the support plates 8. Two clamping plates 10 are connected with the pressure sensors 9. The side of the clamping plate 10 away from the pressure sensor 9 is provided with a rubber layer 11. An electric sliding rail 2 is installed on the processing table 1. A mechanical arm 3 is installed on the moving end of the electric sliding rail 2. A mounting bracket 4 is installed on the execution end of the mechanical arm 3. A welding head 5 is installed on the mounting bracket 4 for performing welding work.

[0052] After the operator places the white body stamping part to be welded on the placement table 6 of the clamping assembly of the machining table 1, the device initialization program is started through the controller 26, and at this time the device enters the positioning and clamping stage. In this stage, the cooperative clamping structure of "controller 26 + bidirectional slide rail 7 + pressure sensor 9 + clamping plate 10 + rubber layer 11" is adopted, the controller 26 instructs the bidirectional slide rail 7 to drive the two supporting plates 8 to move close to each other until the clamping plate 10 contacts the side surface of the workpiece, the pressure sensor 9 on the supporting plate 8 collects the clamping pressure signal in real time and feeds back to the controller 26, forming a closed-loop control; when the pressure reaches the preset stable range, the controller 26 instructs the bidirectional slide rail 7 to stop running, and the positioning and clamping of the workpiece are completed. Through the structural design of the machining table 1 matched with the clamping assembly, the electric slide rail 2 and the mechanical arm 3 cooperate, the problems of inaccurate positioning of the workpiece, limited operation range and rigid welding posture in traditional welding are effectively solved. The clamping assembly can realize accurate positioning and stable clamping of different specifications of white body stamping parts, and avoid workpiece deviation or deformation; the electric slide rail 2 drives the mechanical arm 3 to move flexibly, combined with the multi-degree-of-freedom adjustment capability of the mechanical arm 3 itself, it can easily adapt to the welding requirements of complex curved surface and hidden weld of white body, greatly improving the flexibility and coverage range of welding operation; at the same time, the automatic operation mode eliminates the dependence on manual skills, can ensure the consistency of weld in batch production, reduces the subsequent polishing and correction process, and significantly improves the production efficiency.

[0053] The scanning and monitoring system is installed on the mounting rack 4, and is used to obtain the three-dimensional appearance of the workpiece, the temperature field of the welding area and the spectral information of the welding process. The scanning and monitoring system comprises a 3D structured light scanner 12 for obtaining three-dimensional appearance data of the workpiece to be welded, a high-resolution infrared thermal imager 13 for real-time monitoring of the temperature field distribution of the welding pool and the heat affected zone, and a high-speed narrow-band laser scanner 14 for analyzing the plasma spectrum or reflected light signal in the welding process.

[0054] The smoke collection mechanism is used for collecting and purifying smoke and harmful gas generated in the welding process, and comprises a collection cover 15, a filter cartridge dust collector 16, a filter box 17, a discharge pipe 18, a gas pump 19 and a circulation assembly. The collection cover 15 is installed at the upper end of the welding head 5, the filter cartridge dust collector 16 is connected with the collection cover 15 through an extension pipe 27, the filter box 17 is connected with the filter cartridge dust collector 16 through a connecting pipe, the discharge pipe 18 is installed at the gas outlet end of the filter box 17, the gas pump 19 is installed on the discharge pipe 18 and used for providing gas flow power, and the circulation assembly is used for gas detection circulation and comprises a circulation pipe 20, a gas detector 21, a first electric control valve 22 and a second electric control valve 23. The circulation pipe 20 is connected with the discharge pipe 18 and the extension pipe 27 at two ends respectively, the gas detector 21 is installed in the discharge pipe 18 and used for detecting the composition of the discharged gas, the first electric control valve 22 is installed on the discharge pipe 18, and the second electric control valve 23 is installed on the circulation pipe 20. The filter box 17 is internally provided with a HEPA filter 24 and an activated carbon adsorption layer 25.

[0055] After the positioning and clamping are completed, the operator issues a welding operation instruction through the controller 26, and the equipment enters a path planning and welding preparation stage. In this stage, relying on the cooperative structure of the “3D structured light scanner 12 + controller 26 + electric sliding rail 2 + mechanical arm 3”, the 3D structured light scanner 12 on the mounting frame 4 first performs comprehensive scanning on the workpiece, obtains accurate three-dimensional topographic data and transmits the data to the controller 26. The controller 26 processes the data in combination with the preset welding parameters to generate an optimal welding path. Then the controller 26 sends a motion instruction to the electric sliding rail 2 and the mechanical arm 3. The electric sliding rail 2 drives the mechanical arm 3 to realize large-range movement in the horizontal direction, and the mechanical arm 3 drives the welding head 5 on the mounting frame 4 to accurately move to the starting position of welding through multi-degree-of-freedom adjustment. The scanning and monitoring system can obtain the three-dimensional topography of the workpiece, the temperature field of the welding area and the spectral information of the welding process in real time, accurately capture the change of the molten pool state, timely find welding defects such as pores and cracks, realize real-time tracing and pre-warning of welding quality, replace the traditional post-detection mode, and reduce detection cost and resource waste.

[0056] After the welding head 5 moves to the starting position, the welding operation is started, and at the same time, the equipment synchronously enters the quality real-time monitoring and smoke purification stage, realizing the parallel cooperation of welding, monitoring and purification. In terms of quality monitoring, a cooperative structure of "high-resolution infrared thermal imager 13 + high-speed narrow-band laser scanner 14 + controller 26 + welding head 5" is adopted. The high-resolution infrared thermal imager 13 captures the temperature field distribution of the welding pool and the heat-affected zone in real time, and the high-speed narrow-band laser scanner 14 synchronously analyzes the plasma spectrum or reflected light signal in the welding process. The detection data of the two types of monitoring equipment is transmitted to the controller 26 in real time, and the controller 26 judges the welding quality by analyzing the data. If the temperature is too high, the spectrum signal is abnormal, or other quality abnormal conditions are found, the controller 26 will immediately adjust the operation parameters of the welding head 5 or suspend the operation, realizing dynamic and accurate control of the welding quality and early warning of defects. This cooperative structure effectively solves the problem of high detection cost and unqualified products flowing into the subsequent process caused by the lack of real-time monitoring in traditional welding methods. Without destructive detection after the fact, the detection cost is reduced, and the consistency of the welding quality in batch production is improved.

[0057] In terms of smoke purification, a multi-stage purification and circulation control cooperative structure of "collection hood 15 + filter cartridge dust collector 16 + filter box 17 + circulation assembly + controller 26" is adopted. The controller 26 synchronously starts the gas pump 19 to provide gas flow power. The collection hood 15 at the upper end of the welding head 5 can accurately capture the smoke dust and harmful gases generated during welding, avoiding the problem of inaccurate exhaust of the traditional workshop overall ventilation system. The gas enters the filter cartridge dust collector 16 through the telescopic pipe 27 for preliminary dust removal, and then enters the filter box 17 through the connecting pipe. After being deeply purified by the HEPA filter 24 and the activated carbon adsorption layer 25, it is discharged through the discharge pipe 18. In this process, the gas detector 21 installed in the discharge pipe 18 detects the composition of the exhaust gas in real time, and the detection data is fed back to the controller 26. When the gas is detected to be substandard, the controller 26 immediately closes the first electric control valve 22 on the discharge pipe 18 and opens the second electric control valve 23 on the circulation pipe 20, so that the substandard gas reenters the telescopic pipe 27 through the circulation pipe 20 and participates in the purification process again until the gas meets the standard, and then switches back to the normal discharge mode. The smoke collection mechanism can collect and purify the smoke dust and harmful gases generated during welding. Compared with the traditional workshop overall ventilation system, the smoke purification efficiency is higher, which can effectively avoid the accumulation of harmful gases and protect the health of the operators, in line with the industry standards of green production.

[0058] In the above embodiment, the controller 26 is installed on the processing table 1, and the controller 26 is electrically connected with the bidirectional slide rail 7, the electric slide rail 2, the two pressure sensors 9, the mechanical arm 3, the welding head 5, the visual camera, the high-resolution infrared thermal imager 13, the high-speed narrow-band laser scanner 14, the filter cartridge dust collector 16, the gas detector 21 and the gas pump 19.

[0059] It should be noted that the specific model specifications of the controller 26, the bidirectional sliding rail 7, the electric sliding rail 2, the two pressure sensors 9, the mechanical arm 3, the welding head 5, the visual camera, the high-resolution infrared thermal imager 13, the high-speed narrow-band laser scanner 14, the filter cartridge dust remover 16, the gas detector 21 and the air pump 19 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0060] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An intelligent welding apparatus, characterized by, The application relates to a welding device. The device comprises: a processing table (1) on which a clamping assembly is installed, the clamping assembly being used for positioning and clamping a workpiece to be welded on the processing table (1); an electric sliding rail (2) installed on the processing table (1); a mechanical arm (3) installed at the moving end of the electric sliding rail (2); a mounting frame (4) installed at the execution end of the mechanical arm (3); a welding head (5) installed on the mounting frame (4) and used for executing a welding operation; a scanning and monitoring system installed on the mounting frame (4) and used for acquiring three-dimensional topography of the workpiece, a temperature field of a welding area and spectral information in a welding process; 2. The intelligent welding device of claim 1, wherein: a smoke collection mechanism used for collecting and purifying smoke and harmful gas generated in the welding process. The clamping assembly comprises: a placing table (6) fixedly installed on the processing table (1); a bidirectional sliding rail (7) installed on the placing table (6); two support plates (8) respectively connected with two moving ends of the bidirectional sliding rail (7); two pressure sensors (9) installed on the support plates (8); 3. The intelligent welding device of claim 2, wherein: two clamping plates (10) connected with the pressure sensors (9) and provided with rubber layers (11) on sides, away from the pressure sensors (9). The scanning and monitoring system comprises: a 3D structured light scanner (12) used for acquiring three-dimensional topography data of the workpiece to be welded; a high-resolution infrared thermal imager (13) used for monitoring temperature field distribution of a welding molten pool and a heat-affected zone in real time; 4. The intelligent welding device of claim 3, wherein: a high-speed narrow-band laser scanner (14) used for analyzing plasma spectrum or reflected light signals in the welding process. The smoke collection mechanism comprises: a collection cover (15) installed at the upper end of the welding head (5); a filter cartridge dust collector (16) connected with the collection cover (15) through an extension tube (27); a filter box (17) connected with the filter cartridge dust collector (16) through a connecting tube; an exhaust pipe (18) installed at the gas outlet end of the filter box (17); an air pump (19) installed on the exhaust pipe (18) and used for providing gas flow power; 5. The intelligent welding device of claim 4, wherein: a circulating assembly used for gas detection circulation. The circulating assembly comprises: a circulating pipe (20) with two ends connected with the exhaust pipe (18) and the extension tube (27) respectively; a gas detector (21) installed in the exhaust pipe (18) and used for detecting components of exhaust gas. A first electrically controlled valve (22) is installed on the exhaust pipe (18); A second electrically controlled valve (23) is installed on the circulation pipe (20).

6. The intelligent welding device of claim 5, wherein: A HEPA filter (24) and an activated carbon adsorption layer (25) are installed inside the filter box (17).

7. The intelligent welding device of claim 5, wherein: A controller (26) is installed on the processing table (1), which is electrically connected with the bidirectional sliding rail (7), the electric sliding rail (2), the two pressure sensors (9), the mechanical arm (3), the welding head (5), the visual camera, the high-resolution infrared thermal imager (13), the high-speed narrow-band laser scanner (14), the filter cartridge dust collector (16), the gas detector (21) and the air pump (19).

Images