JPS6019819Y2 - Welding torch core wire guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a core wire guide device for a welding torch mainly applied to the wrist of an industrial robot.

First, as a device of this type, there is provided a rotating shaft that holds a welding torch tied to the front surface of the tip of an arm member that extends forward from the robot body, and one end of which is connected to the welding torch along the axis of the rotating shaft and the other end of the arm member that extends forward from the robot body. The present applicant has proposed a type in which a core wire guide is connected to a conduit cable (Japanese Patent Application No. 15824/1982), but since the conduit cable is fixed to a support plate that supports the other end of the core wire guide, ,
When the posture of the welding torch changes, torsional stress is generated in the core wire, which deforms it into a complicated shape, which has a negative effect on the feed of the core wire to the welding torch (insufficient feed amount or stoppage of feed due to low deformed piles) ) is accompanied by inconvenience.

The purpose of the present invention is to obtain a device free of such inconveniences, and a rotating case 7 is attached to the tip of an arm member 1 extending forward from the robot body or other parts, and a rotating shaft is supported by the rotating case 7. 3 to hold the welding torch 2, and a core wire guide 5 connected to the welding torch 2 is provided in the rotary case 7 along the axis of the rotary shaft 3, and a conduit cable 4 is connected to the core wire guide 5. The present invention is characterized in that the tip of the conduit cable 4 is rotatably supported about the axis of the cable 4 on a support plate 6 in a rotating case 7 that supports the core wire guide 5.

In the drawing, a rotating case 7 is provided at the tip of an arm member 1 extending forward from a robot body (not shown), etc., and the rotating case 7 includes a sprocket body 10° 11 rotated by a chino 8.9, and one sprocket body 10. A rotating shaft 3 is provided which is rotated by the sprocket body 10 via bevel gears 12 and 13, and a welding torch 2 is connected to the front surface of the rotating shaft 3 via an insulating material 14° and a power supply member 15 with a cap nut 1.
Fixed at 7.

A core wire guide 5 extending in the front-rear direction along the axis within the rotating shaft 3 communicates with a core wire guide member (not shown) of the welding torch 2 at one end, and a support plate 6 fixed to the rotating case 7 at the other end. The conduit cable 4 is supported by the support plate 6 through a bearing 16, and communicates with the conduit cable 4 supported by the support plate 6 via a bearing 16.

To explain its operation, as one sprocket main body 10 rotates, the rotating shaft 3 rotates about its axis together with the welding torch 2 extending in front of it, and thus the welding torch 2 is given an appropriate movement. At this time, the core wire is guided forward through a core wire guide 5 and a core wire guide member extending along the central axis of the welding torch 2.
When the attitude of the core wire changes, the core wire is twisted. However, as mentioned above, since the conduit cable 4 is supported by the support plate 6 via the bearing 16, the conduit cable 4 rotates in a direction that eliminates the twist of the core wire. .

In this way, even if the orientation of the welding torch changes, feeding resistance due to deformation of the core wire will not occur.

In this way, according to the present invention, in the case where the conduit cable 4 is connected to the other end of the core wire guide 5 whose one end is connected to the welding torch 2, the conduit cable 4
The tip of the cable 4 is rotatably supported by a support plate 6 that supports the other end of the core wire guide 5 around the axis of the cable 4, so that even if the orientation of the welding torch 2 changes, the core wire remains stable. This has the advantage that there is no shortage of core wire feeding amount or stoppage of feeding due to deformation resistance.

[Brief explanation of the drawing]

The drawing is a partially cutaway plan view of one example of the device of the present invention. 1... Arm member, 2... Welding torch, 3... Rotating shaft, 4... Conduit cable, 5... Core wire guide, 6...Support plate.

Claims (1)

[Scope of utility model registration request] A rotating case 7 is attached to the tip of an arm member 1 extending forward from the robot body and other parts, and a welding torch 2 is held on a rotating shaft 3 supported by the rotating case 7, and a core wire guide 5 connected to the welding torch 2 is attached. , which is provided in the rotating case 7 along the axis of the rotating shaft 3, and a conduit cable 4 is connected to the core wire guide 5, in which the tip of the conduit cable 4 supports the core wire guide 5. A core wire guide device for a welding torch, characterized in that a support plate 6 in a rotating case 7 supports the cable 4 so as to be rotatable around the axis of the cable 4.