JPS6018276A - Profiling device for weld line - Google Patents

Abstract

PURPOSE:To make compact the entire part of a device and to simplify control with a profiling device for a weld line having a contact type sensor by forming the detecting part of said sensor into double construction. CONSTITUTION:A detecting part 4A is horizontally attached to the top of a contact type sensor attached freely horizontally movably to a body connected to a controller 5. The part 4A consists of, for example, an outside cylinder 4A1 mounted with an insulating material 4A6 in the inside circumferential part thereof, a contactor 4A2 provided movably in and out to the inside of said cylinder and a spring member 4A3 provided between the collar part 4A5 of the insulating material 4A4 covering the same and an insulating material 4A6. While the contactor 4A2 is in contact with the weld line of a base metal 6, both are short-circuited by the voltage impressed to the contactor 4A2 and therefore a relay 12a turns on and the contactor 4A2 feeds the signal which is an adequate position to the controller 5. When the welding progresses and approaches to the metal 6, the contactor 4A2 retreats and is short-circuited from the cylinder 4A1, then relays 12a, 12b go on and when the sensor is detached from the metal 6, both relays turn off. The profiling control is thus accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a weld line copying device used in automatic welding equipment, simple welding robots, and the like.

[Background of the invention]

As shown in FIG. 1(a), the conventional welding imaging device of this type has a main body 1 equipped with a drive unit 2 connected to a controller 5, and a contact sensor 4' movably connected to the main body 1 through a moving member 3. installation,
The sensor 4' and the base material 6 are connected to a power source 7.

The sensor 4' has a single structure, and its sensing locus changes in a zigzag manner with respect to the weld line 8, as indicated by the broken line 9 shown in FIG. 1(b). That is, the sensor 4' is in an unstable state in which its direction of movement 10 swings, and the width of the swing must be determined or input by the controller 5, which has the disadvantage that the control method or control circuit is complicated. was there.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and provide a compact and inexpensive weld line copying device.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention provides a welding line copying device having a contact type sensor, in which the detection part of the contact sensor has a double-layered structure consisting of an outer cylinder and a contact that can be moved in and out of the outer cylinder. It is characterized by its structure.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In Figures 2 and 3, IA is the main body (not shown)
A slide base is mounted to be movable in the horizontal and vertical directions, 3 is a moving member linked to one slide base, 4 is a contact sensor attached to the moving part #3,
Detectors 4A and 4B are attached to the tip of the sensor 4 in the horizontal and vertical directions, respectively. These detection units 4A.

4B has the same structure. For example, as shown in FIG.
! And, this outer cylinder 4A, a contactor 4A provided so as to be able to go in and out.
, and the collar portion 4AS of the insulating material 4A4 that covers the contact 4A2 and the outer cylinder 4A.

and a spring member 4A3 provided between the insulating material 4A and the spring member 4A3. 5 is the controller, 6 is the base material, 7 is the power supply, 1
1 is a welding torch attached to the moving member 3, 12a, 12
b is the detection part 4A, 4BI7) contactor 4A2, 4B
2 and outer cylinders 4 A+ and 4 B1, respectively, and is also connected to a controller 5 and a power source 7.

Next, the operation of this embodiment having the above configuration will be explained.

FIG. 2 shows a state in which the contactor 4A2 of the horizontal detection portion 4A of the sensor is in contact with the weld line of the base material 6. In this state, the base material 6 and the contact 4A2 are marked!
The applied voltage causes a short circuit between the base material 6 and the contact 4A2, so the relay 12a is turned on and sends a signal to the controller 5 indicating that the contact 4A2 is in the proper position.

Then, when the welding progresses and the base metal 6 is approached, the contact 4
Az is moved back and the contact 4A is moved back as shown in FIG. 5(a).
2 and the outer cylinder 4A are short-circuited.

In this case, since the relays 12a and 12b are turned on, the controller 5 determines that the detection unit 4A has come too close to the base material 6, and the contactor 4A is turned on as shown in FIG. 5(b).

is separated from the base material 6 and retreated toward the side opposite to the base material.

When the contactor 4A2 separates from the base material 6 in this way, the relays 12a and 12b turn off, so it is determined that the contactor 4A has separated from the base material 6, and the contactor 4A2 is brought closer to the base material 6. Control as follows.

〔Effect of the invention〕

As described above, according to the present invention, the detection section of the sensor has a double structure, which simplifies the structure, making it possible to downsize the entire device and simplify control.

[Brief explanation of drawings]

1(a) and 1(b) are block diagrams of a conventional weld line copying device and an explanatory diagram of its operation, FIG. 2 is a block diagram showing an embodiment of the weld line copying device of the present invention, and FIGS. FIG. 4 is a detailed view of the contact type sensor of the same embodiment and a sectional view of its detection part, and FIGS. 5(a) and 5(b) are explanatory diagrams of the operation of the same embodiment. 4...Contact sensor, 4A, 4B...Detection section, 4A
l. 4B1...outer cylinder, 4A2.4B2...contact. Agent Patent Attorney Akio Takahashi Fig. 1 ((L') (Pino No.? Unillustrated No. 3 Day 4 Zuto Fig. 5 and a-9 (l)

Claims (1)

[Claims] Welding line having a contact type sensor: A copying device characterized in that the detection part of the contact type sensor has a double structure consisting of an outer cylinder and a contact provided so as to be able to enter and exit the outer cylinder. Weld line copying device.