JPH0211356B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electron beam welding apparatus particularly for relatively small objects to be welded.

[Prior art]

To explain a conventional electron beam welding device, first, in FIG. 1, there are shown a lower cover 4 attached to a welding chamber 1, an electron gun 9 disposed above the welding chamber, and a power source for supplying power to the electron gun. 10, a column 2 that supports these, and a common base 3 that supports the column, and a rotary table 6 on which the object to be welded 7 is mounted on the upper surface of the lower lid.
are arranged so that a worker 11 can open and close the door 5 of the welding room 1.

To describe the electron beam welding operation of the object to be welded, in FIG. The table 6 is rotated and an electron beam is emitted from an electron gun 9 to the welding location to perform welding. The aforementioned object to be welded 7 is placed in a jig 8.
In order to attach the workpiece to the workpiece, the worker 11 must attach and detach the workpiece in the narrow welding room 1, but this work is not only difficult but also extremely difficult to automate. In addition, a jig 8 is provided corresponding to the workpiece 7 to be welded.
It is also usually necessary to replace the rotary table, which is a difficult task that involves attaching and detaching bolts in the narrow welding chamber.Moreover, when several types of rotary tables are prepared, it is necessary to replace them. However, this work also has the drawback of being difficult as described above.

[Summary of the invention]

The present invention was made in view of the current situation, and provides a guide in which a rail is provided on the lower surface of a table pallet on which objects to be welded and a table for welding are placed, and the rail is laid on the lower cover of the welding chamber. It is an object of the present invention to provide an electron beam welding device which eliminates the drawbacks of conventional devices by making it possible to carry the table pallet out of the welding room by moving the table pallet along the welding chamber.

[Embodiments of the invention]

Next, an embodiment of the present invention will be described with reference to FIGS. 3 and 4. A work door 18 is provided on the front surface of the welding chamber 12 in which the electron gun 9 is disposed on the upper part, and a door 18 is provided on the lower surface so that the work door 18 can be opened and closed. The lid 13 is attached, and two guides 15 are laid on the upper surface of the lower lid of the welding chamber with the direction of the guides facing toward the door, and a rail 16 that is movably engaged is placed on the guides. A table pallet 14 fixedly installed on the lower surface is engaged with the rear of the welding chamber for an appropriate length, and a rotary table on which the workpiece 7 to be welded can be mounted via a jig 8 is provided on the pallet. 17 is installed.

Therefore, according to the present invention, when attaching or removing the workpiece 7 etc. to be welded, the operator opens the door 18 and hands the front end of the table pallet 14 on which the workpiece 7 is mounted at the welding position S. When the pallet is grabbed and pulled forward, the rail 16 on the lower surface of the pallet is guided by the guide 15 on the lower cover 13 of the welding chamber 1, and smoothly moves to the workpiece set position T shown by the dotted line in Fig. 3 and stops. At this position, the worker can attach and detach the workpiece 7, replace the jig 8,
Since work such as replacing the rotary table 17 can be performed, the work is easy, reliable and quick, and is completely freed from the conventional difficult work in a narrow welding room. It should be noted that replacing a table weighing over 50 kg, such as the XY-axis table 19 attached to Figure 3, was conventionally not easy and dangerous work in a welding room, but with this invention it is extremely easy. It goes without saying that this can be done safely and easily, and that jigs for various types of objects to be welded can be replaced easily and quickly in the same way as described above.

The device according to the present invention is suitable for attachment to an automated device for attaching and detaching objects to be welded, as described below. That is, in FIGS. 5 and 6, with the workpiece 7 located at the workpiece set position T of the above-described embodiment, the workpiece can be gripped and pivoted to the workpiece stock stand 21. This type of manipulator has a simple function and can be introduced at a relatively low cost. The workpiece 7 to be welded can be accurately positioned from the stock base to the jig 8 by the rotational movement P and vertical stroke movement Q of the manipulator (FIGS. 5 and 6);
Next, by the horizontal stroke motion R of the manipulator, the workpiece to be welded is moved together with the table pallet 14 to a proper position in the welding chamber 12 (FIG. 6), which is automated. Furthermore, although not shown, an actuator such as an electric motor can be installed at the bottom of the lower cover 13 to automate the movement of the table pallet 14 via a rack and pinion, and the opening/closing operation of the door 18 can also be automated. ,
Automation of the welding device according to the present invention is easier than conventional devices.

〔Effect of the invention〕

As mentioned above, the present invention has an extremely simple structure that allows for easy, accurate, and quick attachment and detachment of objects to be welded, and is also suitable for automation. There is something big.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of the main parts of a conventional electron beam welding device, FIG. 2 is an enlarged longitudinal sectional side view of the welding chamber shown in the previous figure, and FIG. 3 is a main part showing an embodiment of the present invention. Figure 4 is a vertical side view of the section taken from A-A in the previous figure.
FIG. 5 is a cross-sectional view of a main part of an electron beam welding apparatus according to the present invention provided with an automation mechanism, and FIG. 6 is a plan view thereof. 7... Work to be welded, 8... Jig, 9... Electron gun,
12...Welding room, 13...Lower lid, 14...Table pallet, 15...Guide, 16...Rail,
17... Rotating table, 18... Door. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A rail is provided on the lower surface of the table pallet on which the work to be welded and a table for welding are mounted, and the table pallet is moved by engaging the rail along a guide provided on the lower lid of the welding chamber. An electron beam welding device characterized by being able to be carried outside the welding room.