JPS59185569A - Power source device for welding - Google Patents

Abstract

PURPOSE:To improve a management of a welding work by simplifying a calculation of the rate of operation, etc. by providing a current detecting circuit for detecting a welding current, a reference clock generating circuit, etc. CONSTITUTION:A power source device for welding consists of a current detecting circuit 2 for detecting a welding current flowing to a base material to be welded 1, a reference clock generating circuit 4, an operating circuit 3, a display outputting circuit 6 for displaying a welding current detecting time, a display part 7 and a controlling circuit 5. Said circuit 3 calculates a signal transferred from the circuits 2, 4, and counts a time when the welding current is detected. Also, said circuit 5 consists of a logical operational element for controlling the circuits 4, 3 and 6, a storage element, etc. According to said device, a management of a welding work is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to counting and displaying welding time in a welding power source.

Conventional configuration and its problems Conventionally, when counting welding time, the electric j% f detection circuit was connected to a mechanical clock and the clock was run while the welding current was flowing. Because it is a specialized device for welding, it is expensive, and the time counting work is complicated, which made it difficult to manage welding operations.

Purpose of the Invention The present invention makes it easy to calculate the operating rate and efficiency of a welding power supply device and to manage the work by starting cumulative addition of the bath welding time at any time and displaying the total welding time at any time.
[The purpose is to be able to do this with high accuracy.]

Structure of the Invention In order to achieve this object, the present invention, as shown in FIG. 2, a calculation circuit 3 that calculates the signal transferred from the reference clock generation circuit 4 and counts the time during which welding current is detected, and a display output circuit 6 and a display section for displaying the welding current detection time. 7, and the basic clock circuit 4
A control circuit 5 for controlling an arithmetic circuit 3 and a display output circuit 6 is provided. With this configuration, in the arithmetic circuit 3,
A logical operation is performed using the 1-second period chronograph recursion sent from the reference clock generation I path 4 and the current detection signal sent from the current detection circuit 2, and the display section displays the time during which the welding current is detected by the current detection circuit 2. 7 to display the count.

DESCRIPTION OF EMBODIMENTS Hereinafter, one embodiment of the present invention will be explained with reference to FIG. ) 2a to convert the welding current value to a voltage value, and comparator 2a.
Send to b. The comparator 2b compares the reference voltage generated by the basic voltage generating circuit 2C with the voltage sent from the voltage generator 2a, and if the voltage sent from the voltage generator 2a is higher, the current detection signal is Arithmetic unit 3 a of arithmetic circuit 3 (/
The reference voltage was set so that the current detection signal was sent when the current flow was approximately aoA or more through 2a (input m, shirt in this embodiment).

The twisted clock generation circuit 4 generates a rectangular wave with a period of 1.5 mm and sends it to the arithmetic unit 3a of the arithmetic circuit 3.

The arithmetic unit 3a performs the logical sum of the current detection signal sent from the comparator 2b and the rising edge of the rectangular wave sent from the reference clock generation circuit 4, and sends the result to the wauter 3b of the arithmetic circuit 3. That is, while the current is being detected, a signal is sent to the counter 3b once every second.

The color/return 3bVζ has a second counter 3b-1, a minute counter 3b-2, and an hour counter 3b-3, and increments the second counter 3b-1 by one every time the arithmetic unit 3a outputs the word "A". Second counter 3b-1 and minute counter:/
13b-2 (is 6oi counter, second counter/ri 3b-1
When the minute counter 3b-2 has completed one cycle, the minute counter 3b-2 is incremented by one, and when the minute force counter 3b-2 has completed one cycle, the hour counter 3 is incremented.
1) -3 is incremented by one.

Further, the contents of the component force rank 3b-2 and the time color 3b-3 of the counter 3b are sent to the display output circuit 6 and displayed on the display section 7 when necessary. Note that the display section 7 is
Segmeno) L E D (LightEmiting
Diode) was used. and the arithmetic circuit 3
The operations of the reference clock generation circuit 4 and the display output circuit 6 are controlled by a control circuit 5 consisting of a logic operation element such as a microcomputer and a memory element.

Effects of the Invention According to the present invention, calculation of operation rate and efficiency can be easily performed by counting and displaying the welding time of the power supply device for welding 1χ, which has the advantage of facilitating the amortization of welding work. 0 that is a thing

[Brief explanation of drawings]

Figure 1 does not show the welding power supply device of the present invention;
FIG. 2 is a block diagram showing one embodiment of the present invention. 1...Base material to be welded, 2...Current detection circuit, 3...
・-Arithmetic circuit, 4... base 7415 clock generation circuit,
5...Open side 1 circuit, 6...Display output circuit, 7...
...Display section. Name of agent: Patent attorney Toshio Nakao (1st person)
figure

Claims (1)

[Claims] A current detection circuit that detects the welding current flowing through the base material to be welded, a reference clock generation circuit, and the signals transferred from the current detection circuit and the reference clock generation circuit are calculated to count the time during which the welding current is detected. a control circuit consisting of an arithmetic circuit for controlling the welding current, a display output circuit and a display section for displaying the welding current detection time, and a logical operation element and a memory element for controlling the reference clock generation circuit, the arithmetic circuit, and the display output circuit. Welding power supply equipment installed.