ITPA980010U1 - MASK FOR WELDING WITH RADIOFREQUENCY SERVO-CONTROLLED DARKENING SYSTEM. - Google Patents

Description

Welding mask with radio frequency controlled servo darkening system

TEXT OF DESCRIPTION:

It is a fixed welding mask, consisting of a helmet and a protective part for the face, having a fixed external transparent glass and an internal tilting servo-controlled mechanism that houses an interchangeable darkening glass.

The internal mechanism is controlled by a frequency-coded multi-channel receiving circuit, placed inside the helmet together with the rechargeable accumulators, which is triggered by a remote control applicable externally or directly inserted in any welding terminal.

DETAIL:

In table 1 the parts that make up the structure of the mask are distinguished. It is made up of a protective helmet A (fig. 1) in heat-resistant material and a screen in heat-resistant material G (fig. 1) but lighter than the previous one, fixed to the edges

plastic models D (fig. 1 and fig. 3). The glass door channel F (fig.

1) which houses an interchangeable transparent glass E (fig. 1 and fig. 3)

for eye protection it is placed along the 3⁄4 of the perimeter of the rectangular slot.

On the front of the helmet we find the socket for recharging the batteries B (fig. 1), the ignition switch C (fig. 1) and the compartment H (fig. 1) which houses the selectors for setting the frequency reception.

In table 1, the darkening mechanism A (fig. 2), the compartment housing the accumulators and receiving circuit C (fig. 2) and the adjustable strap for adapting the helmet B (fig. 2) are clearly visible.

The actuation device A (table 2 fig. 2) and (table 2 fig. 1) is a two-channel radiofrequency transmitter connected to two P buttons (table 2 fig. 2) which can be applied or inserted in the handle of the soldering terminal A (table 2 fig. 1). Inside the transmitter, the letter C (table 2 fig. 2) represents the power supply battery (a common battery for a 12V remote control), and the letter B (table 2 fig. 2) the one located in screen H ( table 1 fig. 1). In table 3 we find the description of the mechanical parts and the electronic components inserted inside the mask.

In table 3 the schematized darkening mechanism is represented inside fig. 1 and is composed of a light plastic structure (A) where through the anchoring points (L) two cylindrical section metal axes (B) are fixed in parallel on which the darkening glass door complex composed of a light plastic structure (E ) with lateral toothing (F).

By pressing button P in position 1 (table 2 fig. 2) the two-channel receiver A (table 3 fig. 2) excites the relay R1 (table 3 fig. 2) which polarizes motor G in a normal node (table . 3 fig. 1) which, by turning counterclockwise, by means of the worm screw H (table 3 fig. 1) and the toothed gear I (table 3 fig. 1), raises the supporting structure of the blackout glass from the lateral toothing F and superimposes it on the transparent glass; the blackout glass remains in this position even when the button is released. The tinted glass D (table 3 metal blades C (table 3 fig. 1) is easy to replace. The four rubber washers M1 / M2 / M3 / M4 (table 3 fig. 1)

they serve to cushion end-of-stroke impacts during operation. The toothed gear I (table 3 fig. 1), the worm screw H (table 3 fig. 1) inserted in the axis of the motor G (table 3 fig. 1) are the driving components of the mechanism and thanks to their structure they guarantee the locking in the release phase even in the absence of voltage to the motor: this guarantees a greater autonomy of the accumulators.

By pressing the button P in position 2 (table 2 fig. 2) the receiving circuit A (table 3 fig. 2) excites the relay R2 (table 3 fig. 2) which polarizes the motor G in an inverse way (table . 3 fig. 1) which by turning clockwise brings everything back to its original state.

The 12V rechargeable batteries A (table 3 fig. 3), lha, inserted inside the helmet are used to power the whole unit; the recharging socket P (table 3 fig. 4) allows the batteries to be recharged with a common battery charger available on the market even when the power button S GOALS THAT ARE INTENDED TO ACHIEVE This system brings three totally innovative advantages:

1. Unlike totally automated industrial masks, it has the advantage of canceling any false triggers due to other active workstations, precisely because it is the operator himself who controls the mechanism according to his needs; Due to the cheapness of the materials used and the practicality of use, it can be widely used also by small operators in the iron and steel sector as well as in the hobby sector;

3. If necessary, the operator can simultaneously operate the devices of several masks of any collaborators who are assisting him thanks to the coding of the radio control with multiple combinations (simply by pre-setting the right decoding on all the additional masks)

furthermore:

The total absence of external cables allows the greatest freedom of movement avoiding

common battery charger for rechargeable accumulators.

Like the more expensive industrial automatic systems, the operator finds himself having the total availability of the other hand, which was usually used to place the mask on the face. It is significant to specify that this system allows the operator the TOTAL and CONSTANT protection of the head and face.

Claims (4)

CLAIMS: 1) THE SERVO-ASSISTED MECHANICAL DEVICE (TAV.3 FIG.1) IS COMPOSED OF LIGHTWEIGHT PARTS WITH A REDUCED NUMBER FOR GREATER FUNCTIONALITY. 2) THE REMOTE-CONTROLLED TRIGGER (TABLE 2 FIG. 2) WITH FREQUENCY CODING (ALSO USED BY REMOTE CONTROLS FOR AUTOMATIC GATES), ENSURES FREEDOM OF MOVEMENT TO THE OPERATOR, AVOID FALSE TRIGGERING, GUARANTEES INTERVENTION PRECISION, CAN BE INSERTED DIRECTLY IN THE WELDING STATION DIRECTLY WASHING . 3) THE MASK HAS HIGH AUTONOMY (ABOUT 30 HOURS IN NORMAL USE) THANKS TO THE STRUCTURE OF THE MECHANISM AND THE RECHARGEABLE ACCUMULATORS OF lHa THAT DO NOT NEED REPLACEMENT. 4) GIVEN THE LOW COST OF REALIZATION AND THE SIMPLICITY OF USE, THE UTILITY MODEL IN QUESTION CAN BE USED BOTH BY THE SMALL STEEL INDUSTRY OPERATOR AS WELL AS THE HOBBYIST