KR101522708B1 - Apparatus for connecting robot arm and welde tool - Google Patents

Abstract

The objective of the present invention is to provide a connecting device for a robot arm and a welder tool which firmly connects a robot arm and various utilities of a welder through a fusion of sealing and a locking technique by being applied to an arc welding robot, and prevents an interference between the devices. To achieve this, the connecting device for a robot arm and a welder tool in accordance with the present invention is formed of a cylindrical shape having a utility coupling unit and a torch coupling unit respectively on both ends, and is mounted on a robot arm with a connection bracket as a medium. The utility coupling unit comprises: a utility fixing plate formed of a disk shape having a plurality of collision prevention sensors and a plurality of connector coupling holes formed along the edge portion thereof; and a utility coupling body having a gas supply hole, a wire supply hole, a power cable, an air supply hole, and a sensor connector which penetrates the body.

Description

[0001] APPARATUS FOR CONNECTING ROBOT ARM AND WELDE TOOL [0002]

      The present invention relates to a robot arm and a welding tool connecting apparatus, and more particularly, to a robotic arm and a robotic arm which can be firmly connected to various utilities of a robot arm and a welding machine through fusion of sealing and unwinding prevention techniques, Welder tool connecting apparatus.

      In recent years, as the industry has become more sophisticated, precise work has been required in various fields, and the utilization of welding robots has been rapidly increasing.

      However, the technology level of the domestic robot industry is about 80% of that of the advanced countries of the robot.

      According to such a situation, the connection device for interconnecting the robot arm and the welding tool is dependent on import as a consumable item, and has a problem that it is vulnerable to the delivery time, the amount, and the quality, so that the productivity problem arises in the arc welding robot line In fact.

      On the other hand, the apparatus for connecting the robot arm and the welding tool is a component material applied to an arc welding robot, and is widely used in automobile processes such as a motorcycle wheel, a body, a chassis, and an exhaust system welder, and a ship, a construction machine, .

      Therefore, the robot arm and the welding tool connecting apparatus require the following product performance for smooth operation.

      First, the welding torch, the welding wire, and the utility supply line are brought into close contact with each other, and a loosening phenomenon must be prevented. Through this, a shot can be prevented from a large current of about 400 [A] to 600 [A] In addition, leakage of power source, shield gas, coolant, and clearing air caused by loosening during welding can be prevented.

      Second, since welding is performed at various angles, interference between the welding tool and the robot during the work must be prevented.

      Third, the collision between the welding torch and the torch must be prevented in the event of an error in the input welding program.

      Fourth, it should be made of a suitable material (special copper alloy, etc.) that has excellent conductivity and can withstand high current.

      However, since the conventional robot arm and the connecting device for interconnecting the welding tool depend on the import from the supplier of the foreign robot welding machine, the price of the product is high and the delivery period is difficult to be matched, There is also a problem of being vulnerable to leakage of utility and utility.

Korean Patent Laid-Open No. 10-2012-0122055

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a robotic arm and a welding machine, And to provide a robot arm and a welding tool connecting device that can prevent interference between the devices.

      According to an aspect of the present invention, there is provided a connecting device for interconnecting a robot arm and a welding tool in a robot welding system, the connecting device comprising: The connecting device has a tubular shape having a utility coupling portion and a torch coupling portion at both ends thereof, and is mounted on the robot arm via a connection bracket; The utility coupling unit includes a utility fixed plate having a disk shape and having a plurality of collision prevention sensors and connector coupling holes formed along the edge thereof, and a utility fixing plate having a cylindrical shape protruding from the center of the outer surface of the utility fixed plate, A utility coupling body having a gas supply hole, a wire supply hole, a power cable, an air supply hole and a sensor connector formed through the body; The torch coupling portion includes a torch fixing plate having a disk shape and provided opposite to the utility fixing plate at positions spaced from the utility fixing plate by a predetermined distance and having a plurality of collision preventing sensors and connector coupling holes along the edge portions thereof, A torch coupling body protruding from the center and having a thread formed on an outer circumferential surface thereof and having a gas supply hole, a wire supply hole, a power cable, an air supply hole, and a sensor connector passing through the body; Wherein the gas supply hole and the wire supply hole of the utility coupling body and the torch coupling body, the power cable, the air supply hole, and the sensor connector are connected to each other via a connection pipe or a cable in a mutually corresponding state.

      Preferably, a pair of mounting protrusions having a semicircular shape protrude from the outer surface of the coupling body of the utility coupling portion at a predetermined height so as to mutually symmetrically, wherein each of the mounting protrusions has one gas supply hole, A power cable is formed, and an air supply hole and a sensor connector are formed on both sides of the pair of seating projections.

      Preferably, a pair of seating grooves having a semicircular shape are formed on the outer surface of the coupling body of the torch coupling portion to have a predetermined depth so as to be symmetrical with each other. Each of the seating grooves has one gas supply hole, A power cable is formed, and an air supply hole and a sensor connector are formed on both sides of the pair of seating grooves.

      In addition, a tubular second case having threads formed on the outer circumferential surfaces at both ends is mounted on the outside of the connecting pipe and the cable, and a ring-shaped first case and a ring- And three cases are respectively mounted on both ends of the second case.

      Preferably, an unlocking hole is formed on one side of the outer circumferential surface of the first case to fasten the pin or the screw to prevent the unlocking.

As described above, according to the present invention, since the arc welding robot is provided with a sealing and unwinding prevention technology, various utilities of the robot arm and the welding machine can be firmly connected to improve the efficiency of robot welding do.

In addition, since it is possible to provide an interface that matches the characteristics of various arc welding robots, it is possible to provide an excellent effect of compatibility between the welding tool and the robot, while preventing interference between the welding tool and the robot. It is also possible to have an effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a robot welding system to which a robot arm and a welding machine connecting apparatus according to the present invention are applied;
2 is a perspective view showing the appearance of a robot arm and a welding machine tool connecting apparatus according to the present invention,
FIGS. 3A to 3C are a front view, a side view, and a side view, respectively, showing an appearance of a robot arm and a welding tool connecting apparatus according to the present invention;
FIG. 4 is a perspective view showing an internal configuration of a robot arm and a welding machine tool connecting apparatus according to the present invention, FIG.
FIGS. 5A to 5C are a front view, a side view, and a side view, respectively, of an internal configuration of a robot arm and a welding tool connecting apparatus according to the present invention.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a robot welding system to which a robot arm and a welding tool connecting apparatus according to the present invention are applied. FIG. 2 is a perspective view showing the appearance of a robot arm and a welding apparatus connecting apparatus according to the present invention. FIG. 4 is a perspective view showing the internal construction of the robot arm and the welding tool connecting apparatus according to the present invention, and FIGS. 5A to 5C are views showing the outer appearance of the robot arm and the welding machine tool connecting apparatus according to the present invention, FIG. 5C is a front view, a side view, and a side view of the internal configuration of the robot arm and the welding tool connecting apparatus according to the present invention.

First, the robot arm and the welding tool connecting apparatus according to the present invention are applied to a robot welding system, so that the robot arm 100 and the various utilities of the welding machine can be firmly connected to each other through fusion of sealing and unwinding prevention technologies .

The robot arm and the welder tool connecting apparatus 10 are provided to interconnect the robot arm and the welder tool in the robot welding system, And is mounted to the robot arm 100 via a connection bracket 400 having a specific structure.

Here, the connecting device 10 has a substantially cylindrical body, and the utility coupling portion 20 and the torch coupling portion 40 are formed at both ends of the coupling device 10 to have a screw coupling structure.

The utility coupling unit 20 is provided with a utility plate 22 having a substantially circular plate shape and the three interference prevention sensors 28 are arranged along the outer edge portion of the utility fixing plate 22, And three connector coupling holes 26 for fixing the connector are formed at regular intervals so as to form a substantially triangular shape.

The three collision avoidance sensors 28 are connected to the sensor connector 30 to supply a predetermined detection signal to detect the collision between the torch 300 and the welding object.

A utility coupling body 24 integrally protrudes from the center of the outer surface of the utility fastening plate 22 to form a substantially cylindrical shape. A thread is formed on the outer circumferential surface of the utility coupling body 24, And various other utilities 200 are connected and fastened.

A pair of mounting protrusions 30 having a substantially semicircular shape protrude from the outer surface of the utility coupling body 24 so as to be symmetrical with respect to each other. Each of the mounting protrusions 30 has one A gas supply hole 36 and a wire supply hole 34 and a pair of power cables 32 are formed on both sides of the pair of seating projections 30. Torch cleaning An air supply hole 38 through which air pressure is supplied for the air and a sensor connector 40 through which the three collision preventing sensors 28 are connected to supply a sensing signal.

 Shielding gas is supplied through the gas supply hole 36 and welding consumables are supplied through the wire supply hole 34 and the pair of power cables 32), it is configured to supply Coolant INLET & POWER (Current, Voltage) or Coolant OUTLET & POWER (Current, Voltage) respectively through the power cable to the Coolant supply pipe .

      The torch attaching portion 50 is provided with a torch fixing plate 52 having a substantially disk shape so as to face each other at a position spaced apart from the utility fixing plate 22 by a predetermined distance. A crash prevention sensor 58 and a connector engagement hole 56 are formed so as to correspond to the three collision prevention sensors 28 and the connector engagement holes 26 provided in the utility fixing plate 22, respectively.

      A torch-engaging body 54 is integrally formed to protrude from the center of the outer surface of the torch-fixing plate 52 to form a substantially cylindrical shape. A thread is formed on an outer circumferential surface of the torch-engaging body 54, So that the torch 300 can be fastened.

      At this time, a pair of seating grooves 60 having a substantially semicircular shape are formed on the outer surface of the torch-coupling body 54 so as to be symmetrically formed to have a predetermined depth, and each constitution of the utility coupling body 24 The gas supply holes 66 and the wire supply holes 64 and the pair of power cables 62 are formed in the seating grooves 60 so as to correspond to the elements and between the pair of seating grooves 60 And an air supply hole 68 and a sensor connector 70 are formed on both sides of the air supply hole 68 and the sensor connector 70, respectively.

      As described above, the gas supply holes 36 and 66 and the wire supply holes 34 and 64, which are formed so as to correspond to each other over the utility coupling body 24 and the torch coupling body 54, and the power cables 32 and 62 And the air supply holes 38 and 68 and the sensor connectors 40 and 70 are connected to each other through a connection pipe or a cable 80 in a mutually corresponding state.

      On the other hand, the outer surface of the connecting device 10, which is formed in a substantially cylindrical shape, is made to be closed through a housing composed of the first case to the third case.

      That is, the utility coupling unit 20 is formed in a substantially ring shape in a state where the second case 92 having a substantially tubular shape having threads on the outer circumferential surfaces at both ends is provided outside the coupling pipe and the cable 80, A first case 90 having a threaded portion formed on an inner circumferential surface thereof is fastened to one end of the second case 92 through a thread and the torch coupling portion 300 is formed in a substantially ring shape, And the third case 94 is connected to the other end of the second case 92 through a thread.

Reference numeral 96 denotes a loosening-preventing fixing hole formed on one side of the outer circumferential surface of the first case 90 so as to perform a loosening preventing function and to which a pin or a screw is fastened.

Next, the operation of the present invention as described above will be described in detail as follows.

The robot arm and the welding tool connecting apparatus according to the present invention are applied to a robot welding system and are connected to the robot arm 100 through a connection bracket 400. Various utilities 200 and welding torches 300 ) To each other.

That is, one end of the connecting bracket 400 having a substantially bar shape is coupled to the robot arm 100 having various structures, and the connecting bracket 400 is attached to the other end of the connecting bracket 400 do.

A welding utility 200 is fixedly coupled to the utility coupling part 20 of the coupling device 10 through a utility coupling body 24 having threads formed on the outer peripheral surface thereof to provide various utilities for welding operations A pair of grooves (not shown) having a substantially semicircular shape corresponding to the seating projections 30 of the utility coupling body 24 are formed at the ends of the welding utility so that the corresponding surfaces of the utility utilities are firmly in close contact with each other, (Not shown) formed in the form of a nut in the state of being mounted on the utility coupling portion 24.

At this time, the gas supply hole 26 and the wire supply hole 34 provided in the utility coupling body 24, the electric power cable 32, the air supply hole 38, and the sensor connector 40, and the like.

A torch 300 for welding operation is fixedly coupled to the torch coupling portion 50 of the connecting device 10. To this end, the end portion of the torch is fixed to the seating groove 60 of the torch coupling body 54, A pair of protrusions (not shown) having a substantially semicircular shape corresponding to the protrusions are formed so as to protrude from the protrusions of the torch- (54).

Thus, through the robotic arm and the welder tool connection device, a sealing function and a loosening prevention function for supplying various utilities from various welding utilities 200 to the torch 300 side are provided in the robot welding system, So that a smooth welding operation can be performed.

In addition, the connection device 10 can be applied to various kinds of arc welding robots via the connection bracket 400 to provide an interface. In the welding operation, interference between the welding tool and the robot is prevented So that a smooth welding operation can be performed.

      While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

10: connection device, 20: utility coupling part,
22: Utility fixing plate, 24: Utility coupling body,
26,56: Connector coupling hole, 28,58: Anti-collision sensor,
30: seat projection, 32, 62: power cable,
34, 64: wire feed hole, 36, 66: gas feed hole,
38,68: Air supply hole, 40,70: Sensor connector,
50: torch coupling portion, 52: torch fixing plate,
54: torch coupling body, 60: seat groove,
80: Connector and cable, 90: First case,
92: second case, 94: third case,
96: Loosening prevention hole, 100: Robot arm,
200: welding utility, 300: welding torch,
400: connection bracket.

Claims (5)

1. A connecting device for interconnecting a robot arm and a welding tool in a robot welding system, comprising:
The connecting device has a tubular shape having a utility coupling portion and a torch coupling portion at both ends thereof, and is mounted on the robot arm via a connection bracket;
The utility coupling unit,
A utility fixed plate having a disk shape and having a plurality of collision prevention sensors and connector coupling holes formed along the edge thereof,
And a utility coupling body protruding from the center of the outer surface of the outer circumferential surface of the utility fixing plate and having a screw thread formed on the outer circumference thereof and having a gas supply hole, a wire supply hole, a power cable, an air supply hole, and a sensor connector ;
The torch-
A plurality of anti-collision sensors and connector engaging holes formed along the edge portions of the torch fixing plate, the torch fixing plate being provided at a position spaced apart from the utility fixing plate by a predetermined distance,
And a torch coupling body protruding from the center of the outer surface of the torch fixing plate and having a thread formed on the outer circumference thereof and having a gas supply hole, a wire supply hole, a power cable, an air supply hole, and a sensor connector, ;
Wherein the gas supply hole, the wire supply hole, the electric power cable, the air supply hole, and the sensor connector of the utility coupling body and the torch coupling body are connected to each other via a connection pipe or a cable in mutually corresponded state. Arm and welder tool connection. The method according to claim 1,
A pair of seating projections having a semicircular shape are protruded at a predetermined height so as to mutually symmetrically form on the outer surface of the coupling body of the utility coupling portion,
Wherein each of the seating projections is formed with one gas supply hole, a wire supply hole and a pair of power cables, and an air supply hole and a sensor connector are formed on both sides of the pair of seating projections. Arm and welder tool connection. The method according to claim 1,
A pair of seating grooves having a semicircular shape are formed on the outer surface of the coupling body of the torch coupling portion at a predetermined depth so as to be symmetrical with each other,
Wherein each of the seating grooves includes one gas supply hole, a wire supply hole, and a pair of power cables, and the air supply hole and the sensor connector are formed on both sides of the pair of seating grooves, respectively. Arm and welder tool connection. The method according to claim 1,
A tubular second case having threads formed on the outer circumferential surfaces at both ends thereof is mounted on the outside of the connecting tube and the cable, and a ring-shaped first case and a third case having a thread on the inner circumferential surface of the utility coupling part and the torch- Are mounted on both ends of the second case, respectively. 5. The method of claim 4,
And an unlocking fixing hole for fastening a pin or a screw to prevent loosening is formed on one side of the outer circumference of the first case.

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