JPS5939470A - Arc welding machine - Google Patents

Abstract

PURPOSE:To enable optimum welding and to improve working efficiency and quality of welding, by enabling the operator to recognize the welding current value and voltage value during execution of weldings with good accuracy according to need. CONSTITUTION:A switch 12 for commanding the output of welding conditions for outputting the actual current value and actual voltage value during welding by voice is provided at the vicinity of a torch switch 12. A control circuit 17 takes therein the signal CS from an input circuit 13, and respectively feedback signals AFB and VFB from a feedback circuit 14 for welding conditions, calculates the value of the average welding current and average welding voltage and controls the output after converting said values to prescribed voice levels. A condition storage circuit 18 is constituted of a storage section CMRY for conditions value for storing the actual welding current value and actual welding voltage value converted and regulated to prescribed digital quantity with the circuit 17 at optional sampling time and a storage section AMRY for average conditions value for storing the average values in accordance with the data of the CMRY. A voice synthesizing circuit 19 produces the output signal for welding conditions by voice from a speaker 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arc welding machine, and more particularly to an arc welding machine that enables a welding operator to accurately recognize the welding current value and welding pressure value during welding as necessary. It is related to welding machines.

FIG. 1 shows the general configuration of a conventional semi-automatic arc welder using a consumable electrode, specifically a welding wire.

In the figure, 1 is the power supply main body, cables 2 and 2'
from the wire feeder 3 to the conduit cable 4 via
Welding is performed by generating an arc between the wire fed through the welding torch 5 and the base metal 6. 7 is
This is a remote control box for adjusting the welding current and voltage near the welding operation, and is composed of, for example, a current adjustment knob 8 or a voltage adjustment knob 8' using a variable resistor. Reference numerals 9 and 10 are instruments for displaying the welding current and voltage during welding, and generally an ammeter or voltmeter with a pointer is used as shown in Figure 1. It is often installed in

As shown in Figure 1, in the semi-automatic arc welding method, which is characterized by continuously feeding welding wire and performing high-efficiency welding, the bath welding current value, welding voltage value, etc. There are conditions, but the details are determined by the experience and knowledge of the welding operator. Therefore, welding work may be difficult for unskilled workers. Also, as mentioned above,
In conventional machines, the ammeter and voltmeter are often installed in the power supply unit, which causes the inconvenience of welding workers being unable to recognize the actual welding current and voltage values during welding. be. Furthermore, even if the set values of the welding current and pressure are fixed, an extension cable may be used depending on the distance of the welding object from the power source, which may cause differences in the actual welding conditions and the appropriate Another problem is that it is not possible to perform proper welding.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, and to enable a welding operator to always weld under appropriate working conditions by adjusting the welding conditions while checking the actual current value and actual voltage value with the sound of the welding machine output. An object of the present invention is to provide an arc welding machine designed to improve welding work efficiency.

In the present invention, audio output is used to display actual welding conditions in view of operational constraints during welding work. Further, the voice output command is issued, for example, by the welding operator operating a switch provided near the arc starting switch of the welding torch. Specifically, the current and voltage values during welding are memorized at arbitrary sampling times, and based on voice output commands,
The average value of each is calculated and output by voice synthesis.

An embodiment of the present invention will be described below with reference to a block diagram shown in FIG. In Fig. 2, 11 is a torch switch for starting the arc, and 12 is a welding condition output signal switch for outputting the actual current value and actual voltage value during welding by voice. Thoughts, torch switch 1
2. 13 is an input circuit having the welding condition output command switch 12 as input No. 8; 14 is a welding condition return circuit composed of a welding current return circuit 15 and a welding voltage return circuit 16; 17 is the input circuit. The signal C8 from 13 and each return signal AFB and VFBk from the previous bath contact condition return circuit 14 are taken in, the values of the average welding current t and the average welding voltage are calculated, and the sound level is adjusted to a predetermined sound level. A control circuit 18 is used to convert and control the output, and 18 is a condition value memory for storing the actual welding voltage value and actual welding voltage value converted and adjusted to a predetermined digital value by the control circuit 17 at an arbitrary sampling time. Part CMRY and this CMB
a condition storage circuit comprising an average condition value storage unit AMRY for storing an average value based on data of Y;
Reference numeral 9 denotes a condition display circuit, specifically a voice synthesis circuit for outputting a voice welding condition output signal from the speaker 20.

FIG. 3 is a flowchart showing the control operation of the present invention. When the power is turned on and welding starts, the sampling time TIME for A/D conversion of VFR and AF'B is set at 21, and it is set at 22 and 23.
t'#LVFB, AIi'B (7) Perform A/D conversion,
Store it in CMRY sequentially. Next, in step 24, it is checked whether the sampling time TIME set in step 21 has elapsed, and the time is adjusted until it has elapsed. When the sampling time TIME has elapsed, it is checked at 25 whether the storage area of CMBY has been exceeded, and if it has not been exceeded, the process returns to 21.

If it exceeds 26, calculate the average voltage and average current values from the data stored in CMBY and calculate AMR.
Store in YK sequential order. Next, input signal C8 for audio output
is checked, and if C3=o, that is, signal C8 is not input, side splitting moves to 32, which will be described later. If C3=1, it is determined at 28 whether or not audio is being output (in the figure, END=O when audio is being output), and if audio is being output, it is 3.
Transfer control to 2. When END=1, further AM at 29
Calculate the average value of the data of 几Y, convert the average value obtained in 3o into an audio signal for voltage and current, and set it (for example, 350 amperes, 30 volts). Next 3
1, this audio signal is uttered. 32, CM 1(Y
As in the case of , it is checked whether the storage area of A M RY has been exceeded, and if it has not been exceeded, the process returns to 21. If it exceeds, control is performed to store the average value of the next 26 from the beginning of AMI (Y) again at 33, and then the process returns to 21 and the same procedure is executed.

Although one embodiment of the present invention has been described above, it is also possible to implement the configuration shown in FIG. 2 using a microcomputer. In this case, the central part of the control circuit 17 shown in FIG. 2 is integrated into the microprocessor, and desired processing is executed under the control of the program. Further, in this case, the memory circuit 18 will be a RAM. Although the speaker 20 shown in FIG. 2 may be installed on the power supply main body, considering the relatively noisy welding work site, it is effective to use a hard hat, such as one that can be easily attached to and removed from a helmet.

As explained above, according to the present invention, the welding operator can accurately recognize the actual current value and actual voltage value during welding by himself/herself, so that the welding operator can always find the optimum value according to the welding object and welding posture. It is possible to perform welding while being aware of the construction conditions, which not only improves the welding efficiency but also improves the quality of the welded part.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of a conventional semi-automatic arc welding machine using a consumable electrode, and FIG. 2 is a diagram showing the configuration of an embodiment of the present invention.
FIG. 3 is a flowchart for explaining the control operation according to the present invention. 12... Voice output command switch, 13... Input circuit, 14... Welding condition return circuit, 17... Control circuit,
18... Condition memory circuit, 19... Speech synthesis circuit. Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] A return circuit for welding current and welding voltage, a memory circuit that stores the return signal from the return circuit, and an average value of the welding current and voltage values stored in the memory circuit. and a control circuit that outputs the welding current value and voltage value to a display circuit as necessary, characterized in that the display circuit is provided with a voice synthesis circuit that outputs a voice signal corresponding to the welding current value and voltage value. arc welding machine.