WO2018107310A1

WO2018107310A1 - Composite welding apparatus and composite welding method

Info

Publication number: WO2018107310A1
Application number: PCT/CN2016/109389
Authority: WO
Inventors: 王西峰; 冯庆柱
Original assignee: 机械科学研究总院青岛分院有限公司
Priority date: 2016-12-12
Filing date: 2016-12-12
Publication date: 2018-06-21

Abstract

Disclosed is a composite welding apparatus, comprising a welding power source, a welding gun (2), a laser (1) and a support system, wherein the laser irradiates a workpiece (7) at a welding spot produced by the welding gun, characterised in that the support system is further provided with a welding seam monitor (3) and a temperature measuring instrument (4), and a heat-radiating device (5) is connected to the support system. Disclosed is a composite welding method, comprising the following steps: step 1, after the laser (1) and the welding gun (2) cooperate to weld the workpiece (7), an infrared thermometer feeds back the temperature value at the weld to a computer, and the computer processes data and then forms a temperature field distribution map; step 2, after analysing temperature field data, determining the impact of the temperature in a molten pool on the welding seam quality, and if same has an impact, enabling the heat-radiating device, and specifically calculating the size of an air port of the heat-radiating device and the required heat-radiation position, and if same has no impact, directly proceeding to step 3; and step 3, an ultrasonic welding seam detector performing detection of the welding seam quality, and the computer feeding back welding seam information to operating personnel, so as to complete the entire welding process. The composite welding apparatus and the composite welding method detect the temperature field distribution of the molten pool in a timely manner, and perform timely temperature adjustment, wherein same can improve the quality of the welding seam, and timely detection of the quality of the welding seam by the welding seam monitor can reflect the quality of the welding seam in a timely manner.

Description

Composite welding device and composite welding method

Technical field

The invention belongs to the field of automatic welding technology, and specifically belongs to a composite welding device and a composite welding method.

Background technique

Composite welding technology is widely used in industry. Because laser and arc are the hazards to the human body, in the actual welding operation, in order to facilitate the automatic welding process, the composite welding torch is usually installed on the welding robot or CNC machine tool. The working instructions are issued by the robot or the numerical control machine tool to the laser, the welding machine and the tooling fixture to realize several parts of the coordination and linkage work. No matter which welding process is used, waste products will be produced. At present, the control of product quality in industrial manufacturing is more timely monitoring technology. When the welding is completed, the distribution of the temperature field of the molten pool also has the quality of the weld. Great impact.

Summary of the invention

The composite welding device of the invention can timely monitor the welding quality, adjust the temperature field temperature of the molten pool, and ensure the quality of the weld seam, and the invention also provides a composite welding method

The composite welding device comprises a welding power source, a welding torch, a laser, a supporting system, and the laser is irradiated on the workpiece at the welding spot generated by the welding gun; and the supporting system is further provided with a welding seam monitoring instrument and a temperature measuring instrument. And connected with a heat sink.

Further, the support system is disposed on a movable conveyor belt, a welding gun and a laser are disposed at a front end of the support system, and a heat dissipation device is disposed on one side of the laser, and a weld inspection instrument and a temperature measuring instrument are disposed on one side of the welding gun.

Further, the weld monitoring instrument is an ultrasonic weld seam detector.

Further, the temperature measuring instrument is an infrared thermometer.

Further, the heat dissipating device is a wind pump, and the air outlet of the wind pump is provided with an adjustment structure.

Further, the adjusting mechanism is that two metal plates perpendicular to each other are driven by the motor at the air outlet.

The composite welding method corresponding to the device comprises the following steps:

Step 1. After the laser and the welding torch cooperate to weld the workpiece, the temperature value of the welding is fed back to the computer through the infrared thermometer, and the temperature field distribution map is formed after the computer processes the data.

Step 2. After analyzing the temperature field data, determine the influence of the temperature in the molten pool on the quality of the weld; affect the heat sink, and calculate the size of the air outlet of the heat sink and the position of the heat sink. If there is no impact, proceed directly to step 3.

Step 3. The ultrasonic weld seam detector detects the weld quality and feeds the weld information to the staff through a computer. Complete a complete welding process.

By integrating the temperature measuring instrument and the heat dissipating device with the welding torch and the laser at the front end of the supporting system, the temperature field distribution of the molten pool can be detected in time, and timely temperature regulation can be performed to improve the quality of the weld seam, and the weld monitoring instrument is The timely detection of weld quality can reflect the weld quality in time, and has the positive effect of timely feedback and saving capital for industrial production.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

In the figure, 1, laser; 2, welding torch; 3, weld monitoring instrument; 4, temperature measuring instrument 5, heat sink; 6, weld; 7, workpiece.

detailed description

Referring to Figure 1, the composite welding device comprises: a welding power source, a welding torch 2, a laser 1, a supporting system, and the laser is irradiated on the workpiece 7 at the welding spot generated by the welding torch; wherein the supporting system is further provided with Weld monitoring instrument 3 and temperature measuring instrument 4, and connected with a heat sink; said branch The support system is arranged on a movable conveyor belt, a welding gun and a laser are arranged at the front end of the support system, and a heat dissipation device is arranged on one side of the laser, and a weld inspection instrument and a temperature measuring instrument are arranged on one side of the welding gun; the welding torch and the laser pass through the hydraulic cylinder The spherical rotating bearing is coupled to the support system to enable the welding torch and the laser to work in conjunction with the welding. The welding seam monitoring instrument is an ultrasonic welding seam detector; the temperature measuring instrument is an infrared thermometer; the measuring end of the ultrasonic welding seam detector and the infrared thermometer is controlled by a robot mounted on the supporting system, and is accurate The measurement of the weld seam 6 requires a measurement position. The heat dissipating device is a wind pump, and the air outlet of the air pump is provided with an adjusting structure, wherein the adjusting mechanism is two metal plates that are perpendicular to each other through a servo motor at the air outlet; Adjusting the size of the outlet of the air pump can accurately adjust the temperature of the molten pool, and the air outlet duct is tapered.

Step 1. After the laser and the welding torch cooperate to weld the workpiece, the infrared energy is focused on the photoelectric detector by the infrared thermometer, and converted into a corresponding electrical signal; the signal passes through the amplifier and the signal processing circuit according to the internal algorithm of the instrument and After the target emissivity is corrected, it is converted into the temperature value of the weld pool to be tested, and the temperature value is fed back to the overall controller. The distribution of the temperature field is calculated by applying the double elliptic distribution + double ellipsoid volume distribution + peak linear increasing - logarithmic curve rotating body" heat source mode.

Step 3. The ultrasonic weld seam detector detects the weld quality, firstly measures the length of the probe leading edge, then measures the K value of the probe, adjusts the scanning speed, and adjusts the detection sensitivity after completing the distance-amplitude curve drawing in the computer. ,probe. The weld information is fed back to the staff through a computer. Complete a complete welding process.

Claims

The composite welding device comprises a welding power source, a welding torch, a laser, a supporting system, and the laser is irradiated on the workpiece at the welding spot generated by the welding gun; and the supporting system is further provided with a welding seam monitoring instrument and a temperature measuring instrument. And connected with a heat sink.
The hybrid welding apparatus according to claim 1, wherein said supporting system is disposed on a movable conveyor belt, a welding gun and a laser are disposed at a front end of the supporting system, and a heat dissipating device is disposed on one side of the laser, in the welding gun A weld inspection instrument and a temperature measuring instrument are provided on one side.
The hybrid welding apparatus according to claim 2, wherein said weld monitoring instrument is an ultrasonic weld seam detector.
The hybrid welding apparatus according to claim 2, wherein said temperature measuring instrument is an infrared thermometer.
The hybrid welding apparatus according to claim 3 or 4, wherein the heat dissipating device is a wind pump, and an adjustment structure is provided at an air outlet of the air pump.
The hybrid welding apparatus according to claim 5, wherein the adjusting mechanism is two metal plates that are perpendicular to each other by the motor at the air outlet.
The hybrid welding apparatus according to claim 6, wherein the composite welding method corresponding to the apparatus comprises the following steps:

Step 1. After the laser and the welding torch cooperate to weld the workpiece, the temperature value of the welding is fed back to the computer through the infrared thermometer, and the temperature field distribution map is formed after the computer processes the data.

Step 2. After analyzing the temperature field data, determine the influence of the temperature in the molten pool on the quality of the weld; affect the heat sink, and calculate the size of the air outlet of the heat sink and the position of the heat sink. If there is no impact, proceed directly to step 3.

Step 3. The ultrasonic weld seam detector detects the weld quality and welds the weld information through the computer. Feedback to the staff. Complete a complete welding process.