CN112192105A

CN112192105A - Double-head servo robot welding gun device and switching method thereof

Info

Publication number: CN112192105A
Application number: CN202010891488.7A
Authority: CN
Inventors: 叶绍志; 郑建丰; 余雪驹; 周庆; 胡朝; 张世杰
Original assignee: Anhui Pudian Welding Technology Co ltd
Current assignee: Anhui Pudian Welding Technology Co ltd
Priority date: 2020-08-30
Filing date: 2020-08-30
Publication date: 2021-01-08

Abstract

The invention discloses a double-head servo robot welding gun device and a switching method thereof, wherein the double-head servo robot welding gun device comprises a rack assembly; the welding gun assembly comprises two welding electrodes and a servo motor, the servo motor controls the welding electrodes to respectively perform independent operation, and the two welding electrodes are loaded on the rack assembly in a replaceable manner; the circuit system is divided into two circuits and is respectively communicated with the servo motors of the two welding gun assemblies; and the switching system switches the two circuits and further switches the control program of the servo motor. The device provided by the invention is provided with two independent servo motors and the welding gun heads which can be independently controlled and switched at any time for welding.

Description

Double-head servo robot welding gun device and switching method thereof

Technical Field

The invention relates to a welding gun device, in particular to a double-head servo robot welding gun device and a switching method thereof.

Background

The welding gun is one of the main devices for hot air welding. Consists of a heating element, a nozzle and the like. The structure of the welding gun is divided into a gas welding gun, an electric welding gun, a quick welding gun and an automatic welding gun. The torch is a torch that heats the coil by burning a combustible gas (hydrogen or a mixture of acetylene and air) so that the compressed air fed into the coil is heated to a desired temperature. The amount of air fed in or out is regulated by a tap. The heating device of the electric welding gun consists of a ceramic groove pipe and an electric heating wire therein. The speed of welding may vary from nozzle configuration to nozzle configuration. The quick welding gun is formed by improving the structure of a welding gun nozzle.

The welding gun is used for clamping the stud, lifting the stud (igniting electric arc), pressing the stud downwards and transmitting welding current. The welding gun accessory is also provided with a support frame, so that the stud is ensured to be vertical to the surface of a workpiece, when the diameter of the stud changes, a stud chuck with the corresponding diameter needs to be replaced, and the extension length of a connecting rod between the support frame and a welding gun body is adjusted, so that the welding gun accessory can adapt to studs with different lengths. The welding gun is lifted and pressed down by the electrode (stud) through three main elements of electromagnetic coil, iron core and spring.

The torch used for the secondary gas shielded flux cored arc welding is similar to that used for the gas shielded arc welding. The welding gun has various specifications, rated values and types, is suitable for welding guns for automatic and semi-automatic welding, and is air-cooled and water-cooled. The protective gas cools the welding torch when passing through the welding torch, and the air-cooled welding torch is cooled by heat emitted in the surrounding air. The welding gun is selected mainly according to the welding current and the used shielding gas. If the current is 500A or more, a water-cooled torch is generally used.

In the traditional welding gun, if one robot is used for welding with two welding guns, the gun changing disc can only be used for grabbing and switching the welding guns, so that grabbing and switching need time, and welding rhythm is influenced. And the need to use a gun changing plate increases costs. Thus, a typical torch is a gun head.

Disclosure of Invention

The invention aims to provide a double-head servo robot welding gun device and a switching method thereof.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a dual head servo robotic welding gun apparatus, comprising:

a frame assembly;

the welding gun assembly comprises two welding electrodes and a servo motor, the servo motor controls the welding electrodes to respectively perform independent operation, and the two welding electrodes are loaded on the rack assembly in a replaceable manner;

the circuit system is divided into two circuits and is respectively communicated with the servo motors of the two welding gun assemblies; and

and the switching system switches the two circuits and further switches the control program of the servo motor.

Preferably, the servo motor includes a power source and an encoder, the power source supplies power, the encoder outputs corresponding welding action commands, so the switching system includes a contactor that switches the power source of the servo motor and a relay that switches the commands of the encoder of the servo motor.

Preferably, the rack assembly comprises a transformer, a waterway system and a controller, wherein the transformer is provided with two output ends, the waterway system is provided with two connecting ends, and the controller is provided with two control ends.

Preferably, the rack assembly still includes a conversion structure, conversion structure includes two adapters and a control head, wherein the control head control is two the adapter carries out the position change, two the one end of adapter docks respectively one of them output, link and the control end of rack assembly, the other end of adapter docks respectively welding electrode, the control head is provided with decoupler and loader, the decoupler decoupling the coupling of welding electrode, the loader control the adapter removes and connects.

The invention also provides a switching method of the welding gun device of the double-head servo robot, which comprises the following steps:

(a) the welding gun electrode of one welding gun completes the welding operation, and the welding gun electrode of one welding gun is decoupled;

(b) switching a power supply of the servo motor through a contactor, and switching a coder of the servo motor through a relay;

(c) and loading a second welding gun electrode and controlling the other welding gun electrode to complete the operation.

Preferably, the separation of one of the output terminals, the connection terminals and the control terminals is performed in step (a), and the connection of the other of the output terminals, the connection terminals and the control terminals is performed in step (c).

By adopting the technical scheme, the invention has the beneficial effects that:

1. the grabbing process of changing the gun plate is not required in the switching process of the welding gun, so that the welding time is saved, and the welding rhythm can be improved;

2. the contactor and the relay are used for switching the servo motor, so that the cost is saved compared with the original gun replacing disc;

3. the electrical service life of the contactor and the relay is longer than that of the gun changing plate, and the later maintenance cost is saved.

Drawings

FIG. 1 is a schematic view of a part of the structure of a welding gun device of a double-head servo robot according to the present invention;

FIG. 2 is a schematic view of a part of the structure of the welding gun device of the double-head servo robot according to the present invention;

FIG. 3 is a schematic view of a waterway system of the welding gun device of the double-head servo robot according to the present invention;

fig. 4 is a schematic conversion diagram of the welding gun device of the double-head servo robot according to the invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-2, the present invention provides a dual head servo robot welding gun device, which comprises a frame assembly 10, wherein the frame assembly 10 further comprises a transformer 11, a waterway system 12 and a controller 13, wherein the transformer 11 is provided with two output ends 110, the waterway system 12 is provided with two connection ends 120, and the controller 13 is provided with two control ends 130. Wherein the transformer 11 provides the necessary low voltage and high current, the water circuit system 12 provides a cooling water circuit to avoid overheating during welding, and the controller 13 provides control instructions.

As shown in fig. 3, specifically, the waterway system 12 is provided with two water inlets and two water outlets, wherein the first water inlet and the first water outlet are respectively communicated with the transformer 11, the second water inlet is divided into two branches, one branch sequentially passes through the movable arm side electrode cap, the electrode connecting rod, the electrode holder, the movable electrode conductive block, the static electrode conductive block and the transition block, the other branch sequentially passes through the static arm side electrode cap, the electrode arm, the copper arm and the water return column, and the two branches finally join to the second water outlet.

The double-head servo robot welding gun device further comprises a welding gun assembly 20, the welding gun assembly 20 comprises two welding electrodes 21 and a servo motor 22, the servo motor 22 controls the welding electrodes 21 to respectively perform independent operation, and the two welding electrodes 21 are loaded on the rack assembly 10 in a replaceable mode.

As shown in fig. 4, the double-head servo robot welding gun device further includes a circuit system 30, where the circuit system 30 is divided into two circuits, and the two circuits are respectively communicated with the servo motors 22 of the two welding gun assemblies 20; the double-head servo robot welding gun device further comprises a switching system 40, wherein the switching system 40 switches two circuits, and the switching system 40 further switches the control program of the servo motor 22.

Preferably, the servo motor 22 comprises a power source 221 and an encoder 222, the power source 221 is powered, the encoder 222 outputs a corresponding welding action command, so the switching system 40 comprises a contactor 41 and a relay 42, the contactor 41 switches the power source 221 of the servo motor 22, and the relay 42 switches the command of the encoder 222 of the servo motor 22.

Preferably, the rack assembly 10 further includes a switching structure 14, the switching structure 14 includes two adapters 141 and a control head 142, wherein the control head 142 controls the two adapters 141 to perform position exchange, one end of each of the two adapters 141 is respectively butted with one of the output end 110, the connection end 120 and the control end 130 of the rack assembly 10, the other end of each of the adapters 141 is respectively butted with the welding electrode 21, the control head 142 is provided with a decoupler 1421 and a loader 1422, the decoupler 1421 decouples the coupling of the welding electrode 21, and the loader 1422 controls the adapters 141 to move and connect.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. The utility model provides a double-end servo robot welder device which characterized in that includes:

a frame assembly;

2. The dual head servo robotic welding gun device according to claim 1, wherein the servo motor includes a power source and an encoder, the power source being energized, the encoder outputting corresponding welding action commands, so that the switching system includes a contactor that switches the power source of the servo motor and a relay that switches the commands of the encoder of the servo motor.

3. The dual head servo robotic welding gun device according to claim 2, wherein the rack assembly includes a transformer, a water system, and a controller, wherein the transformer is provided with two output ends, the water system is provided with two connection ends, and the controller is provided with two control ends.

4. The double-ended servo robot welding gun device according to claim 3, wherein the frame assembly further comprises a switching structure, the switching structure comprises two adapters and a control head, the control head controls the two adapters to perform position exchange, one ends of the two adapters are respectively butted with one output end, one connecting end and one control end of the frame assembly, the other ends of the adapters are respectively butted with the welding electrodes, the control head is provided with a decoupler and a loader, the decoupler decouples the coupling of the welding electrodes, and the loader controls the adapters to move and connect.

5. A switching method of a welding gun device of a double-head servo robot is characterized by comprising the following steps:

6. The switching method according to claim 5, wherein the separation of one of the output terminal, the connection terminal and the control terminal is performed in step (a), and the connection of the other of the output terminal, the connection terminal and the control terminal is performed in step (c).