Self-protection gas preheating device for robot welding

Abstract

The self-protection gas preheating device comprises a self-protection gas conveying pipe and a push-pull wire motor, the push-pull wire motor comprises a motor body, a motor sealing cover is arranged outside the motor body, a spiral flow guide gas groove is formed between the motor sealing cover and the motor body, and a gas inlet nozzle is arranged on the rear portion of the motor sealing cover; an air outlet nozzle is arranged at the front part of the motor sealing cover; the self-protection gas conveying pipe is divided into two sections and comprises a gas inlet pipe connected with the gas inlet nozzle and a gas outlet pipe connected with the gas outlet nozzle; the gas inlet nozzle and the gas outlet nozzle are communicated with the spiral flow guide gas groove, protective gas enters the spiral flow guide gas groove from the gas inlet pipe and the gas inlet nozzle, heat of the motor is used for preheating the protective gas, and the preheated protective gas is led to the front end of a welding nozzle of the welding gun through the gas outlet nozzle and the gas outlet pipe. Heat of the motor is taken away through protection gas circulation, and efficient heat dissipation is achieved; motor waste heat is used for preheating protective gas, and the welding quality is improved; the equipment structure is simplified, and energy consumption and maintenance cost are reduced.

Description

Technical Field

[0001] The invention relates to a self-shielding gas preheating device for robot welding. Background Art

[0002] In robot welding operations, the drive motor of the front-end wire drawing mechanism needs to frequently rotate forward and reverse to accurately control the wire feeding. The existing technology has the following defects: ①. The motor runs at high load for a long time, resulting in heat accumulation. Traditional air cooling or natural heat dissipation methods are inefficient and can easily cause motor failure; ②. The shielding gas (such as CO2) used in the welding process is usually used directly without preheating, which affects the stability of the welding pool; ③. Independent cooling systems such as compressor gas loss increase equipment size and energy consumption, which does not meet the lightweight and integrated requirements of industrial robots. Summary of the invention

[0003] The object of the present invention is to provide a self-shielding gas preheating device for robot welding, which can heat the shielding gas while dissipating the heat of the push-pull wire motor.

[0004] The technical solution of the present invention is: A self-shielding gas preheating device for robot welding comprises a self-shielding gas delivery pipe and a push-pull wire motor, and is characterized in that: the push-pull wire motor comprises a motor, a motor sealing cover is arranged outside the motor, a spiral guide air groove is arranged between the motor sealing cover and the motor, an air inlet nozzle is arranged at the rear of the motor sealing cover, and an air outlet nozzle is arranged at the front of the motor sealing cover; the self-shielding gas delivery pipe is divided into two sections, comprising an air inlet pipe connected to the air inlet nozzle and an air outlet pipe connected to the air outlet nozzle; the air inlet nozzle and the air outlet nozzle are communicated with the spiral guide air groove, the shielding gas enters the spiral guide air groove from the air inlet pipe and the air inlet nozzle, the heat of the motor is used to preheat the shielding gas, and the preheated shielding gas passes through the air outlet nozzle and the air outlet pipe to the front end of the welding nozzle of the welding gun.

[0005] The present invention removes the heat of the motor by circulating the protective gas, thereby achieving efficient heat dissipation; utilizes the residual heat of the motor to preheat the protective gas, thereby improving welding quality; simplifies the equipment structure, and reduces energy consumption and maintenance costs.

[0006] The present invention has efficient heat dissipation: the flow rate of the shielding gas is controllable, the heat dissipation efficiency is improved, and the temperature rise of the motor is reduced; energy saving and efficiency improvement: waste heat is used to preheat the gas, reducing the energy consumption of the gas heater; structural optimization: the independent heat dissipation fan is eliminated, the equipment volume is reduced, and the weight is reduced; welding quality is improved: the preheated shielding gas reduces weld porosity and improves the uniformity of penetration depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0008] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0009] Figure 2 Schematic diagram of a robot using the self-protective gas preheating device of the present invention. DETAILED DESCRIPTION

[0010] A self-shielding gas preheating device for welding, comprising a self-shielding gas delivery pipe and a push-pull wire motor, the push-pull wire motor comprising a motor 5, a motor sealing cover 1 is arranged outside the motor, a spiral guide air groove 4 is arranged between the motor sealing cover and the motor, an air inlet nozzle 2 is arranged at the rear of the motor sealing cover, and an air outlet nozzle 9 is arranged at the front of the motor sealing cover; the self-shielding gas delivery pipe is divided into two sections, comprising an air inlet pipe 3 connected to the air inlet nozzle and an air outlet nozzle 10 connected to the air outlet nozzle; the air inlet nozzle and the air outlet nozzle are communicated with the spiral guide air groove, the shielding gas enters the spiral guide air groove from the air inlet pipe and the air inlet nozzle, the heat of the motor is used to preheat the shielding gas, and the preheated shielding gas is passed through the air outlet nozzle and the air outlet pipe to the front end of the welding nozzle of the welding gun.

[0011] The motor housing is provided with a heat conducting groove 6. The motor sealing cover comprises a housing and an end cover arranged at the end of the housing, the end cover adopts an aluminum body 7, and the housing adopts a double-layer hollow structure. The end cover is fixed to the housing by screws 8.

[0012] Figure 2 Chinese: 11, joint one, 12, joint two, 13, wire reel, 14, wire guide tube, 15, joint three, 16, wire feeding mechanism, 17, joint four, 18, joint five, 19, joint six, 20, collision mechanism, 21, wire push-pull mechanism, 22, welding gun, 23, welding wire.

[0013] Workflow: The shielding gas enters the spiral guide gas groove in the motor sealing cover through the air inlet pipe to absorb the heat of the motor; the heated gas passes through the air outlet pipe to the front end of the welding nozzle of the welding gun to preheat the welding area; the aluminum bracket further assists in heat dissipation through conduction to form a three-dimensional heat dissipation network.

Claims

1. A self-shielding gas preheating device for robot welding, comprising a self-shielding gas delivery pipe and a wire-pushing motor, characterized in that: The push-pull wire motor includes a motor, a motor sealing cover is arranged outside the motor, a spiral guide air groove is arranged between the motor sealing cover and the motor, an air inlet nozzle is arranged at the rear of the motor sealing cover, and an air outlet nozzle is arranged at the front of the motor sealing cover; the self-protection gas delivery pipe is divided into two sections, including an air inlet pipe connected to the air inlet nozzle and an air outlet pipe connected to the air outlet nozzle; the air inlet nozzle and the air outlet nozzle are communicated with the spiral guide air groove, the protective gas enters the spiral guide air groove from the air inlet pipe and the air inlet nozzle, the heat of the motor is used to preheat the protective gas, and the preheated protective gas is passed through the air outlet nozzle and the air outlet pipe to the front end of the welding nozzle of the welding gun.

2. A self-shielding gas and heat device for robot welding according to claim 1, characterized in that: A heat conduction groove is arranged on the shell of the motor.

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