RU84281U1 - HAND ELECTRIC WELDING WELDER SIMULATOR - Google Patents

Abstract

Welder simulator of a manual electric arc welding, containing simulators of welded parts, an electrode holder with an electrode and a power supply unit, characterized in that the simulators of the welded parts are wrapped with specially prepared paper, and the trace from the electrode is obtained by converting electrical energy into chemical energy, the trace of which remains in the form of a strip pink, and all this happens at low voltage and low currents.

Description

The simulator belongs to the didactic means of teaching the welding process. Training simulators are used to obtain training skills, especially they are needed for training in mass working professions. After training on simulators, the student will no longer shy away from tools, will more quickly master working methods, and will receive a higher rank.

Known analogues are the predecessors of the simulator welder manual electric arc welding.

For example, an analogue simulator (USSR AS No. 1596396 dated September 30, 1990, Bulletin No. 36) imitates a weld seam by sucking air with sand from the surface of simulated welded parts. By the shape of the track, which is obtained by suctioning sand, one judges the skills and qualifications of the student. In addition, on the simulator of the parts to be welded, there are transverse ribs that help the student master a limited number of welds.

The disadvantages of this simulator are low visibility. In this case, simulators of the welding seams of the simulator cannot change the position, which is the only and only horizontal as the sand layer can crumble. The simulator is attached to the pneumatic system, which reduces its mobility; it cannot save the result of "welding" for a long time and after each use it must be brought to its initial position, that is, to re-fill a layer of sand. On this prototype, it is impossible to learn the technology of welding seams on volumetric parts of ceiling and other seams. The noise from the pneumatic system compressor does not in the best way affect the psyche and well-being of the teacher, student, and third parties.

There is another option for a welder simulator. The simulator authors created an imitation of an electric arc using a voltage converter (patent RU 2275996 C2, application No. 2003131866/02 of October 29, 2003). In this case, the voltage between the end of the electrode and the simulator of the welded part is over 10 kV. This circumstance increases the risk of electric shock.

The electrode trace is a series of brown perforated dots on a piece of paper. The sheet of paper itself is located on the simulator of the welded parts, which can have any spatial shape.

The prototype of this simulator was the invention by A.S. USSR No. 556908 (Bulletin No. 7 of 1977). The purpose of this invention is to increase the efficiency of the learning process. To achieve this goal, the simulator is equipped with an electric converter of the welding arc into sound of various frequencies and headphones. Such a simulator is deprived of clarity, the result of learning to use a welding electrode is mediated, because has no trace.

The author of patent No. 2275996 proposed his own version of overcoming the contradictions in the visibility of training and the safety of training on it. He realized that a special nozzle with a proximity sensor should be added to the simulator electrode. That is, when the electrode is removed a certain distance (more than 1 cm), the electrical circuit turns off the current supply to the electrodes.

But if you touch the electrode when it is not removed a safe distance? Moreover, these simulators are designed for novice welders. Then a huge voltage (about 10-20 kilovolts) will fall on the student’s body.

The objective of the proposed utility model is a new way to get the trace of the electrode when simulating the welding process, as well as ensuring complete electrical safety for the student and third parties.

Consumable electrode with electrode holder Field samples Noise generator Attempt Counter Attempt Indicator

Power Supply Electronic fuse

Structural diagram of the simulator welder Rustam Gorshkov Technical parameters and device simulator.

This simulator differs from analogs in that it is absolutely electrical safe. The voltage between the electrode and the simulator of the welded parts is less than 40 volts, and the trace of the electrode is the result of a chemical reaction when an electric current passes through a sheet of paper in the form of a pink strip on a white sheet of paper.

The simulator kit includes simulators of parts - field samples: pipe, channel, curved surface, etc., electrode simulator, chemical reagent, two racks, fixing bolts, a sheet of paper. The essence of this assembly is illustrated in FIG. No. 1, which presents a general view of the simulator, where:

1. base

2. racks,

3. field sample

4. a sheet of paper,

5. electrode with an electrode holder.

The power supply is a separate device and is located outside the simulator. This design of the simulator fully complies with the requirements of the state standard for electrical safety "Maximum permissible values of touch voltages and currents" GOST 12.1038-82. This standard sets the maximum permissible values of touch voltages and currents flowing through the human body, intended for the design of methods and means of protecting people, when interacting with power plants for industrial and domestic purposes, direct and alternating current with a frequency of 50 and 400 Hz.

Simulators of welded parts are wrapped in white paper impregnated with a chemical reagent. On paper with a pencil, you can draw a line of the weld. This allows you to speed up the learning process. The simulator is the result of a very simple, reliable and cheap assembly. For greater efficiency in training welders, the simulator allows the use of others instead of field data.

The simulator works as follows:

1. the learner by the end of the electrode touches the paper coating of the simulator of the welded parts impregnated with a chemical composition.

2. The pink mark left by the electrode simulator is a “copy” of the weld.

3. The electrical circuit has a power supply with a safe voltage and low current output (40 volts; 200 mA).

4. the power supply is equipped with an electronic fuse that turns it off, in the event of a short circuit, i.e. when the sheet of paper trained by the end of the electrode “pierces” a sheet of paper, it is triggered when the current strength exceeds 1 Α

5. The electrode simulator changes its length, i.e. is “melting”.

6. A sound generator is used to simulate industrial noise during welding.

7. A counter of errors has been developed, which the learner makes during classes on the simulator.

In this simulator, it was possible to solve the problem of recording and saving the result and task, which is achieved by using the phenolphthalein indicator effect, which changes color when the current passes through a paper impregnated with a chemical reagent, while the student’s actions are recorded on a sheet of paper for a long time.

The achievement of a technical result becomes possible only when a trace of the electrode appears, the results are retained in training, and the rate of acquisition of practical skills increases.

The chemical effect that manifests itself when electric current passes through specially prepared paper is used for the first time in such a simulator, therefore this version of the welder simulator meets the criterion of “novelty”.

This product can be created industrially, therefore it meets the criterion of “industrial applicability”.

The design of the simulator is safe for students, easy to repeat in educational institutions. It is this circumstance, in particular, that distinguishes it from many others.

Claims (1)

Welder simulator of a manual electric arc welding, containing simulators of welded parts, an electrode holder with an electrode and a power supply unit, characterized in that the simulators of the welded parts are wrapped with specially prepared paper, and the trace from the electrode is obtained by converting electrical energy into chemical energy, the trace of which remains in the form of a strip pink, and all this happens at low voltage and low currents.