JPS6173658A - Automatic light blocking welded surface - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention operates a p-limit switch by wind pressure and drives a motor through an electronic circuit to rotate a rotating shaft in forward and reverse directions. This invention relates to an automatic light-shielding welding surface that opens and closes.

(Conventional technology) Conventional welding includes fusion welding, pressure welding, brazing, etc.

For example, in the case of arc welding, at the beginning of welding, the welding surface is generally held in one hand and the welding rod is held in the other hand, and the entire base material is welded.

However, when using the welding surface in this case, the usual technique is to cover the face at least simultaneously with or immediately before the arc generated from the tip of the welding rod.

(Problem to be Solved by the Invention) However, in conventional welding techniques, it is not necessary to cover the face with the welding surface before using the welding rod, as it is not a hindrance to the work; Often requires the use of both hands.

Due to this sensitivity, there is a problem in that if the welding surface is covered after welding work, the eyes, face, etc. may be damaged.

(Means for Solving the Problems) This invention was made by paying attention to such conventional problems, and it is possible to blow air through the air inlet while keeping the welding surface covered. The above problem can be solved by activating the wind pressure plate of the limit switch and driving the motor through an electronic circuit to rotate the rotating shaft forward and backward to open and close the window door.The above problem can be solved by closing the door at the same time as welding. It is intended to solve the problem. Hereinafter, this invention will be explained in detail with reference to the drawings.

1 to 5 are diagrams showing the basic concept of the present invention, in which (1) is the welding surface main body, both ends of which are bent slightly backward. A window (2) is opened in the upper part of the main body, and a colored glass door (3) is provided on the outer surface of the window (21).
It pivots so that it can be opened and closed freely. (4) is an air inlet,
Provided on the inner surface of the main body (1). (5) is a wind pressure plate.
It is provided so as to be in contact with the opposite side of the air inlet (4) and connected to a limit switch (6). (7) is an electronic circuit, and the circuit includes a motor drive circuit and a motor for rotating the motor in forward and reverse directions. It is equipped with a F circuit, an overload circuit, etc. (8) is a motor, which is connected to the electronic circuit (7) through a conductor. Attach the transmission shaft (9) to the upper end of the worm (10) and engage it with the worm base. Attach it to the end of the car+n1l (12) and connect its tip to the door (3).(13) is a power source that connects the electronic circuit (7), motor (8), and limit switch (6). Each will be contacted via a conductor wire.(Ll
1) is a strip that is fixed to the upper edge of the welding surface main body (1) and fastens the helmet (15) with a screw.

(effect) This invention will be explained in detail.

When performing welding work, workers must first wear a helmet.
Tighten (15) with the band (14) and place it on your head 9, so that the welded surface main body (1) is in front of your face.In this case, since the door is closing the window, the following Perform the following operations.

When opening the door, when air is blown through the air inlet (4) of the welding surface main body (1), the wind pressure plate (5) moves back and forth due to the wind pressure and the limit switch (6) turns ON. ), electronic circuit (7)
Inside F, F (flip, flop) are reversed and the door (3)
Simultaneously, the motor (8) is driven in the opening direction, and the rotating shaft (
When 9) rotates, the worm base is rotated via the worm (10), and the arm rod (11) pushes up 18) by the rotation of the worm axle. When the door reaches a certain position, the arm lever (11) stops moving, an overload is applied to the motor (8) 9, and the overload circuit operates to activate the motor (8).
) to stop driving. Also, until the overload circuit works, F and F do not change their states, and the motor no (8)
Since it only rotates in one direction, the door remains open.

Operation when closing the door When air is blown in from the air inlet (4) again, the wind pressure plate (5) of the limit switch (6) moves back and forth due to the wind pressure, and the switch (6) become.

Then, F and F (clip, flop) are reversed, and the motor (8) is driven in the direction to close the door (3), rotating the rotating shaft (9), and causing the rotation of the worm axle via the worm (10). Move the Yoshi arm rod (11) downward to pull the door (83ft) downward.When it reaches a certain position, that is, the position where the window is completely closed with the door, the overload circuit is activated and the motor (8) By stopping the driving of the gtI period door (:a), the Q window is closed.

The above operation is repeated to open and close the door to open and close the window, and the welding work is completed directly t4U, or the window is immediately closed with the door, and then the welding work is finished. Sometimes all you need to do is create a masterpiece around the window.

As described in detail, the present invention operates a limit switch by blowing air into the mouth through an air inlet, drives a motor via an electronic circuit, and corrects the rotation axis connected to the motor. By rotating it in the opposite direction, you can use the armrest to open and close the door as well as the window.The light-shielding welded surface is placed over your head and your face? Because cover welding is performed, it is possible to use both hands in broad daylight, which is unique in that it prevents the danger of welding work.

[Brief explanation of drawings]

Figure 1 is an inner view of the welding surface of the present invention with a helmet added;
2 is a side view of the same as the above, FIG. 3 is a plan view of the welding surface of the present invention, FIG. 4 is a sectional view taken along the line E in FIG. 3, and FIG. 5 is a sectional view taken on the 110-line. Cooking Zuresho - 1 - Tsuya and Ojikichio / 11

Claims (1)

[Claims] A window with a door is provided on the outside of the arbitrarily shaped welding surface in the upper part, and a wind pressure plate is installed on the opposite side of the air inlet provided on the inside of the surface, and the wind pressure plate is connected to a limit switch to open and close it. An electronic circuit which can be configured freely and which operates the limit switch is connected to a power source, the electronic circuit is connected to a motor, a rotating shaft is attached to the motor, and a rotating shaft is attached to the upper end of the rotating shaft. A worm and a worm wheel are engaged, an arm rod is fixed to the shaft end of the worm wheel, the tip of the arm rod is protruded from the window and connected to the door, and the door is opened by forward and reverse rotation of the rotating shaft. Automatic shading welding surface characterized by opening and closing.