Submerged arc double-sided back-gouging-free welding system

Abstract

The utility model relates to a submerged arc double-face back-gouging-free welding system which comprises a hopper, a welding gun, welding wire equipment and a cross-shaped sliding way, the cross-shaped sliding way is provided with a supporting arm, the hopper, the welding gun and the welding wire equipment are sequentially and fixedly arranged on the supporting arm, and a laser scanning sensor is arranged at the right end of the supporting arm. The laser scanning sensor is provided with a mounting support, the mounting support is connected with the supporting arm, and the laser scanning sensor is fixed by the mounting support; the output end of the laser scanning sensor is connected with an MCU chip, the MCU chip is provided with a communication module, and the MCU chip is in communication connection with the PLC through the communication module. According to the submerged arc double-face back-gouging-free welding device, the laser scanning sensor, the MCU chip and the communication module are arranged, laser scanning distance measurement is conducted, detection data are sent to the PLC through the communication module, the PLC controls the cross-shaped sliding way to drive the welding gun and welding wire equipment to move along a welding seam, and a hardware foundation is provided for submerged arc double-face back-gouging-free welding.

Description

Technical Field

[0001] The utility model relates to the field of submerged arc welding, in particular to a submerged arc double-sided root cleaning-free welding system. Background Art

[0002] In the manufacturing process of wind power equipment, the straight seam and circumferential seam submerged arc welding of the cylinder is one of the key processes. The use of root-cleaning-free welding technology can significantly improve the welding quality and efficiency. For this purpose, an automatic welding device is designed to correct the welding process parameters and the directional trajectory of the welding wire to ensure accurate welding. The existing equipment is provided with a database, and after inputting the parameters of the welded workpiece, automatic welding parameter matching and automatic welding gun movement are realized, such as CN112792466A, a method for improving the accuracy of the PLC dynamic parameters of the welding machine. However, it is difficult for the existing equipment to complete accurate welding for the irregular double-sided butt welding process with a bevel, as shown in the attached manual. Figure 4 As shown, the team gap N and the misalignment M are determined by different plate sizes, so these two parameters need to be tested.

[0003] There is an urgent need for a submerged arc double-sided root cleaning-free welding system that can detect the team gap N and the misalignment M. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a submerged arc double-sided root cleaning-free welding system, which is provided with a laser scanning sensor, an MCU chip and a communication module, and provides a hardware basis for adopting laser scanning distance measurement. The detection data is sent to a PLC controller through the communication module, and the PLC controller drives the welding gun and the welding wire equipment to move along the weld by controlling a cross-shaped slideway, thereby providing a hardware basis for submerged arc double-sided root cleaning-free welding.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a submerged arc double-sided root cleaning-free welding system, comprising a machine head and a PLC controller, the machine head comprising a hopper, a welding gun, a welding wire device and a cross-shaped slideway, the cross-shaped slideway comprising a first linear guide and a second linear guide, the slider of the first linear guide is fixed to the slide rail of the second linear guide, the first linear guide is longitudinally arranged, the second linear guide is transversely arranged, the slider of the second linear guide is fixedly provided with a support arm, the hopper, the welding gun and the welding wire device are fixedly arranged on the support arm in sequence, a laser scanning sensor is arranged at the right end of the support arm, the laser scanning sensor is provided with a mounting support, the mounting support is connected to the support arm, and the mounting support fixes the laser scanning sensor;

[0006] The output end of the laser scanning sensor is connected to an MCU chip, the MCU chip is provided with a communication module, and the MCU chip is communicatively connected with a PLC controller via the communication module.

[0007] Furthermore, the first linear guide is provided with a first servo motor, the second linear guide is provided with a second servo motor, the first servo motor and the second servo motor are both provided with a servo driver, and the servo driver is communicatively connected with the PLC controller.

[0008] The PLC controller controls the first servo motor and the second servo motor to work through the servo driver to achieve high-precision control. The welding gun and the welding wire device are moved in the Y-axis direction and the X-axis direction through the first linear guide and the second linear guide.

[0009] Furthermore, the communication module includes one or more combinations of a WiFi module, a Bluetooth module, a Zigbee module and a LoRa module.

[0010] Wireless communication technology is used to complete the communication between the PLC controller and the MCU chip. There is no need to set cables on the support arm. The structure is simple and easy to use and maintain.

[0011] Furthermore, the mounting support includes a connecting arm and a support, the upper end of the connecting arm is a cylindrical structure with a bottom, the lower end of the connecting arm is a long strip structure, the lower end of the connecting arm is connected to the circular surface of the upper end, the upper and lower ends of the connecting arm are an integrated structure, a pawl is provided inside the upper end of the connecting arm, and the pawl is rotatably connected to the bottom surface of the upper end of the connecting arm.

[0012] Furthermore, the support is a cylindrical structure with a hollow interior, a laser scanning sensor is fixedly arranged inside the support, and a probe of the laser scanning sensor passes through the support;

[0013] A connecting rod is fixedly provided on the side of the support. The connecting rod is a cylindrical structure. A bearing is provided on the connecting rod. The connecting rod is rotatably connected to the connecting arm through the bearing. A rotating shaft is provided at the end of the connecting rod. A ratchet is provided at the position of the rotating shaft corresponding to the pawl. The ratchet and the pawl are meshingly connected.

[0014] The ratchet and the pawl are set to limit the support, ensuring that the support allows the laser of the laser scanning sensor to irradiate the detection position and be at a fixed angle.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model can provide a hardware foundation for accurate submerged arc double-sided root-free welding, and a laser scanning sensor is provided. The laser scanning sensor is connected to the support arm through a mounting bracket. The laser scanning sensor can project a laser onto the top of the plate to be measured under the action of the mounting bracket, and then obtain the team gap N and the misalignment amount M through the operation principle of the laser scanning sensor. The output end of the laser scanning sensor is connected to an MCU chip, and the MCU chip is provided with a communication module. The MCU chip is connected to the PLC controller through the communication module. The length parameter detected by the laser scanning sensor is sent to the PLC controller by the MCU chip. The PLC controller completes the movement of the welding gun and the welding wire equipment by controlling the first linear guide and the second linear guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural schematic diagrams of a submerged arc double-sided root cleaning-free welding system of the utility model.

[0018] Figure 2 This is the second structural diagram of a submerged arc double-sided root cleaning-free welding system of the utility model

[0019] Figure 3 This is a circuit schematic diagram of a submerged arc double-sided root cleaning-free welding system of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the tested board of the utility model.

[0021] Figure numbers: 1 is a PLC controller, 2 is a hopper, 3 is a welding gun, 4 is a welding wire device, 5 is a cross slide, 6 is a laser scanning sensor, 7 is a support arm, 8 is an MCU chip, 9 is a communication module, 10 is a first servo motor, 11 is a second servo motor, 12 is a servo driver, 13 is a connecting arm, 14 is a support, 15 is a pawl, 16 is a connecting rod, 17 is a bearing, 18 is a rotating shaft, and 19 is a ratchet. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0023] Example 1

[0024] like Figures 1 to 4As shown, a submerged arc double-sided root cleaning-free welding system includes a machine head and a PLC controller 1, the machine head includes a hopper 2, a welding gun 3, a welding wire device 4 and a cross slide 5, the cross slide 5 includes a first linear guide and a second linear guide, the slider of the first linear guide is fixed to the slide rail of the second linear guide, the first linear guide is longitudinally arranged, the second linear guide is transversely arranged, the slider of the second linear guide is fixedly provided with a support arm 7, the hopper 2, the welding gun 3 and the welding wire device 4 are fixedly arranged on the support arm 7 in sequence, the right end of the support arm 7 is provided with a laser scanning sensor 6, the laser scanning sensor 6 is provided with a mounting support, the mounting support is connected to the support arm 7, and the mounting support fixes the laser scanning sensor 6;

[0025] The output end of the laser scanning sensor 6 is connected to an MCU chip 8, and the MCU chip 8 is provided with a communication module 9. The MCU chip 8 is connected to the PLC controller 1 through the communication module 9.

[0026] In this embodiment, the laser scanning sensor 6 is a Keyence LJ-V7000 sensor, the MCU chip 8 is specifically an STM32 single-chip microcomputer, and the MCU chip 8 communicates with the laser scanning sensor 6 through a USB serial port.

[0027] The first linear guide is provided with a first servo motor 10 , the second linear guide is provided with a second servo motor 11 , the first servo motor 10 and the second servo motor 11 are both provided with a servo driver 12 , and the servo driver 12 is communicatively connected with the PLC controller 1 .

[0028] PLC controller 1 is Siemens s7-1200 controller. Servo driver 12 is Siemens servo driver.

[0029] Further, the communication module 9 includes one or more combinations of WiFi module, Bluetooth module, Zigbee module and LoRa module. The communication module 9 uses a WiFi module, which is a WGM110 chip. The WGM110 chip communicates with the MCU chip 8 through a UART serial port.

[0030] The mounting support includes a connecting arm 13 and a support 14, the upper end of the connecting arm 13 is a cylindrical structure with a bottom, the lower end of the connecting arm 13 is a long strip structure, the lower end of the connecting arm 13 is connected to the circular surface of the upper end, the upper and lower ends of the connecting arm 13 are an integrated structure, a pawl 15 is provided inside the upper end of the connecting arm 13, and the pawl 15 is rotatably connected to the bottom surface of the upper end of the connecting arm 13.

[0031] The support 14 is a cylindrical structure with a hollow interior, and a laser scanning sensor 6 is fixedly arranged inside the support 14, and a probe of the laser scanning sensor 6 passes through the support 14;

[0032] A connecting rod 16 is fixedly provided on the side of the support 14. The connecting rod 16 is a cylindrical structure. A bearing 17 is provided on the connecting rod 16. The connecting rod 16 is rotatably connected to the connecting arm 13 through the bearing 17. A rotating shaft 18 is provided at the end of the connecting rod 16. A ratchet 19 is provided at the position of the rotating shaft 18 corresponding to the pawl 15. The ratchet 19 is meshingly connected to the pawl 15.

[0033] During operation, the angle between the support 14 and the connecting arm 13 must be adjusted first so that the laser scanning sensor 6 can scan the surface of the welded plate. The support 14 is rotated clockwise, and the support 14 is rotatably connected to the connecting arm 13 through the connecting rod 16 and the bearing 17. The laser scanning sensor 6 set in the support 14 is adjusted. Due to the existence of the pawl 15, the support 14 can only rotate clockwise. The pawl 15 overcomes the downward gravity of the support 14, so that the support 14 is limited in the non-adjusted state. The laser scanning sensor 6 can stably and continuously perform the detection operation of the tested plate.

[0034] The laser scanning sensor 6 detects the length of the team gap N and the misalignment M (N and M are as follows Figure 4 As shown in FIG. 1 ), the detection parameters are sent to the MCU chip 8, and the MCU chip 8 sends the detection parameters to the PLC controller 1 through the communication module 9. The data required by the PLC controller 1 is completed. The PLC controller 1 controls the first servo motor 10 and the second servo motor 11 through the servo driver 12, respectively, and the first servo motor 10 and the second servo motor 11 drive the first linear guide rail and the second linear guide rail respectively, so that the welding gun 3 and the welding wire device 4 are always located at the welding seam position.

[0035] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A submerged arc double-sided root cleaning-free welding system, comprising a machine head and a PLC controller (1), characterized in that: The machine head comprises a hopper (2), a welding gun (3), a welding wire device (4) and a cross-shaped slideway (5); the cross-shaped slideway (5) comprises a first linear guide rail and a second linear guide rail; a slider of the first linear guide rail is fixed to a slide rail of the second linear guide rail; the first linear guide rail is arranged longitudinally, and the second linear guide rail is arranged transversely; the slider of the second linear guide rail is fixedly provided with a support arm (7); the hopper (2), the welding gun (3) and the welding wire device (4) are fixedly provided on the support arm (7) in sequence; a laser scanning sensor (6) is provided at the right end of the support arm (7); the laser scanning sensor (6) is provided with a mounting bracket; the mounting bracket is connected to the support arm (7); and the mounting bracket fixes the laser scanning sensor (6); The output end of the laser scanning sensor (6) is connected to an MCU chip (8), the MCU chip (8) is provided with a communication module (9), and the MCU chip (8) is communicatively connected to the PLC controller (1) via the communication module (9).

2. A submerged arc double-sided root cleaning-free welding system according to claim 1, characterized in that: The first linear guide is provided with a first servo motor (10), the second linear guide is provided with a second servo motor (11), the first servo motor (10) and the second servo motor (11) are both provided with a servo driver (12), and the servo driver (12) is communicatively connected to the PLC controller (1).

3. A submerged arc double-sided root cleaning-free welding system according to claim 1, characterized in that: The communication module (9) comprises one or more combinations of a WiFi module, a Bluetooth module, a Zigbee module and a LoRa module.

4. A submerged arc double-sided root cleaning-free welding system according to claim 1, characterized in that: The mounting support comprises a connecting arm (13) and a support (14); the upper end of the connecting arm (13) is a cylindrical structure with a bottom, the lower end of the connecting arm (13) is a long strip structure, the lower end of the connecting arm (13) is connected to the circular surface of the upper end, the upper and lower ends of the connecting arm (13) are an integrated structure, a ratchet (15) is arranged inside the upper end of the connecting arm (13), and the ratchet (15) is rotatably connected to the bottom surface of the upper end of the connecting arm (13).

5. A submerged arc double-sided root cleaning-free welding system according to claim 4, characterized in that: The support (14) is a cylindrical structure with a hollow interior, a laser scanning sensor (6) is fixedly arranged inside the support (14), and a probe of the laser scanning sensor (6) passes through the support (14); A connecting rod (16) is fixedly arranged on the side of the support (14); the connecting rod (16) is a cylindrical structure; a bearing (17) is arranged on the connecting rod (16); the connecting rod (16) is rotatably connected to the connecting arm (13) via the bearing (17); a rotating shaft (18) is arranged at the end of the connecting rod (16); a ratchet (19) is arranged at a position of the rotating shaft (18) corresponding to the ratchet pawl (15); and the ratchet (19) and the ratchet pawl (15) are meshingly connected.

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