JP2003048072A - Smoke removing apparatus linked with ark welding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a conventional problem of forgetting troublesome on/off switching operation of the power source of a smoke removing apparatus, resulting in interference with smooth ark welding, because a independent operating system of the peripheral equipment including a smoke removing apparatus is adopted, and to provide an equipment layout in which the ark welding machine is linked with the smoke removing apparatus in the power source switching operation. SOLUTION: For the purpose of linking a torch switch operation of the ark welding machine with the exhaust fan of the smoke removing apparatus, an electric circuit is structured so that a relay is parallelly connected to the conductor of the arc welding machine and that, with the torch switch on through the relay, the torch is automatically synchronized with the exhaust fan in operation. Further, with an off-delay timer interposed in the exhaust fan conductor, the timer setting time is made longer on the exhaust fan than on the arc welding machine, thereby improving the smoke removing effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a series of welding devices in which a smoke exhausting device is installed in parallel with an arc welding machine.

[0002]

2. Description of the Related Art Conventionally, an arc welding machine is provided with a smoke exhaust device as a peripheral device in parallel, but it is general that the operation systems thereof are independently constructed. I had trouble with the intermittent operation of the power switch including peripheral devices.

As a result, since the operator forgets to connect the power switch of the arc welding machine and start the work, and then to connect the power switch of the smoke exhaust device, there is a potential for troublesomeness such as inconvenience. There was a problem that smooth work was hindered and work efficiency was lowered.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art.
(EN) Provided is a device arrangement configured to operate a series of devices by interlocking an arc welder and a power switch of a smoke exhaust device which is a peripheral device with a simple operation.

[0005]

In a series of welding equipment in which smoke exhausting devices are installed in parallel in an arc welding machine, when a torch switch of the arc welding machine is operated, smoke exhausting devices installed in parallel as peripheral equipment. The smoke exhaust fan is equipped with an electric circuit so that it automatically operates.

In a series of welding devices in which smoke exhausting devices are arranged in parallel in an arc welding machine, a relay is connected in parallel to a conductor of the arc welding machine, and the smoke exhausting device is connected through the relay. When the smoke exhaust fan is interlocked and the torch switch is turned on, the
The wiring is set so that the smoke exhaust fan automatically operates at the same time when the switch Further, an off-delay timer is connected to the smoke exhaust fan conductor of the smoke exhaust device, and the timer set time is set longer on the smoke exhaust fan side than on the arc welding machine side. At the same time as improving the smoke effect, a backflow prevention shutter was provided in the smoke exhaust duct suction part of the smoke exhaust device.

In a series of welding devices in which a smoke exhausting device is installed in parallel in an arc welding machine, a relay is connected in parallel to a conductor of the arc welding machine, and the smoke exhausting device is provided through the relay circuit. The smoke exhaust fan is interlocked, and when the torch switch is operated "ON", the smoke exhaust fan automatically operates simultaneously with the operation of the torch, and the automatic manual changeover switch is also connected to connect the automatic circuit and the manual circuit. The circuit was configured in parallel.

In a series of welding devices in which a smoke exhaust device is installed in parallel in an arc welder, conductors of the arc welder and smoke exhaust fan conductors of the smoke exhaust device are centrally wired in a single control box. Then, an electric circuit was constructed in which the operation of the arc welding machine and the smoke exhaust fan of the smoke exhaust device are synchronously linked by the operation of the single control box.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic layout view of a welding apparatus in which an arc welding machine and a smoke exhaust apparatus according to the present invention are installed in parallel. The arrangement of a series of welding devices in which the smoke exhaust device is installed in parallel in the arc welding machine is schematically shown. FIG. 2 is an enlarged view of the arrow portion shown in FIG. 1, showing the structure of the backflow prevention shutter (6). Figure 3
FIG. 1 is an electric circuit diagram that constitutes a welding device that is a main part of the present invention. FIG. 4 is a timer-operated pattern diagram which is a main part of the present invention. FIG. 5 is a schematic sectional view of a torch according to the present invention.

First, the arrangement of an arc welding machine (1) according to an embodiment and a smoke exhausting device (4) arranged in parallel as peripheral equipment thereof will be schematically described with reference to FIG. (1) shows the main body of the arc welder and is referred to as an arc welder in the present application. The arc welder (1) and the torch (3) are connected by an electric code, and the voltage and current set based on various welding conditions are transmitted from the arc welder (1). The welding operation is carried out by the torch (3). The torch (3) is equipped with a torch switch (2), and the current is interrupted through the torch switch (2), so that the operation is frequently performed during the welding operation. The welding method is a metallurgical fastening method in which a metal is heated to a temperature equal to or higher than its melting point to be connected, and the heat source is properly selected depending on the metal or the base metal (A) for which gas, pressure or electricity is used. The embodiment of the present invention relates to an arc welding machine (1) composed of an electric device, and relates to a general structure in which a smoke exhausting device (4) is provided in parallel as a peripheral device.

The arc welding method, whether manual welding or automatic welding, melts the base metal (A) and the welding rod in the air current of a flux or an inert gas and connects a predetermined metal, so that a large amount of gas smoke is generated. To occur. So, as its peripheral equipment, smoke exhaust device (4)
In general, the smoke exhaust device (4) has a smoke exhaust fan (5) installed in the smoke exhaust duct (7).

There are various arc welding methods, but an arc is generated between the base material (A) and the core wire in the flux,
Even if the automatic welding method that melts the core wire / base material (A) / flux by the heat and raises the slag by the refining action of the flux is an inert gas arc welding method-
Hand welding in which the inert gas (3a) is flown out from the chi (3), an arc is generated between the tungsten electrode and the base material (A) in the air flow, and a welding rod is added manually. In the same manner, in an inert gas (3a) air flow, an arc is generated between the welding rod (3b) and the base metal (A) to automatically send the welding rod (3b). However, an electrode is incorporated in the torch (3) with an electric device. One example thereof is shown as a cross-sectional view in FIG.

As shown in FIG. 1, the torch (3) is connected to the arc welding machine (1) by an electric code, and the main power switch (MS) is connected to the arc welding machine (1). ) Side, and is connected to an AC or DC power supply via the main power switch (MS). The welding operation is performed manually by the torch switch (2) provided on the torch (3).

On the other hand, as described above, since the gas smoke is generated along with the welding work, the smoke exhausting device (4) is generally installed in parallel as a peripheral device, and the smoke exhausting device (4) is exhausted. It has been practiced in the prior art to operate smoke fans (5) with independently wired electrical circuits. For this reason, it is necessary to perform some power source input operations during welding work, which causes troubles such as forgetting to input the smoke exhaust device (4) and reduces the efficiency of welding work. Therefore, the present invention is an arc welding machine (1).
The torch switch (2) is designed so that the toe switch (3) and the hand switch of the smoke exhausting device (4) can be integrated into the torch (3) as a single switch. With this configuration, the smoke exhaust fan (5) of the smoke exhaust device (4) can be freely turned on and off by operating the torch switch (2) while the power switch on the smoke exhaust device (4) side is always connected. Yes, if the main power switch (MS) on the arc welder (1) side is connected as the main switch, the arc welder (1) and smoke exhaust device (4) will be used during welding work
Since the operation of can be performed with good timing only by operating the torch switch (2), work efficiency can be improved smoothly.

The above configuration will be specifically described based on the electric circuit shown in FIG. Using a three-phase alternating current (AC) 200V as a power source, a series circuit is formed between the conductor (MC1) in the arc welding machine (1) and the torch switch (2), and the series circuit is for timer operation. The relays (RS) are connected in parallel and the electromagnetic relay
A relay (RS) composed of a relay switch and a relay switch forms a series circuit with a timer relay (TR) and an automatic manual changeover switch (SW), and a fuse (F) is interposed in the series circuit. Then, connect the smoke exhaust fan (5) conductor (MC2) and coil,
An electric circuit is configured to operate the welding device consistently.
The electric circuits are centrally arranged in the control box (CB). In addition, the timer relay (TR) is
An off-delay timer (DT), which is a timer that does not reset the contacts if the power has been turned off for a preset time or more, is installed to operate the smoke exhaust fan (5) for a predetermined time even after welding is completed. Good smoke emission.

Hereinafter, an arc welding machine constructed as described above.
The operation of (1) and the smoke exhaust fan (5) of the smoke exhaust device (4) will be described. When the main power switch (MS) is connected with the three-phase alternating current (AC) 200V as the power source, the conductor (MC1) in the arc welding machine (1) is activated to operate the smoke exhaust fan (4). Power to the relay (RS) coil in the box (CB),
The contact, which is a relay switch in the relay (RS), changes from the "open" state to the "closed" state, and the timer relay (TR) is energized.
The conductor (MC1) in the arc welder (1) is connected to the torch switch (2) to activate the arc welder (1).
It is a conductor that operates by [turning on the torch switch (2)].

On the other hand, when the timer relay (TR) is energized, the contact, which is a relay switch in the timer relay (TR), changes from the "open" state to the "closed" state, and the smoke exhaust fan (5 ) Conductor- (MC2) coil is energized, smoke exhaust fan (5)
The contact, which is a relay switch in the conductor (MC2), changes from the "open" state to the "closed" state, and the smoke exhaust fan (5) is energized to operate the smoke exhaust fan (5). The timer relay (TR)
Is an off-delay timer (DT), which is a timer that the contact does not recover if the set time has not elapsed even if the power of the timer is turned off.The relay (RS) contact is in the open state (arc). Even if the conductor (MC1) in the welding machine (1) is cut off], a certain period of time (timer-set time) timer-release
The contact, which is a relay switch in (TR), is in the "closed" state, and the coil of the conductor (MC2) for the smoke exhaust fan (5) is energized and the smoke exhaust fan (5) continues to operate. Timer relay (TR)
The operation of is shown in the timing chart of FIG.

Although an automatic circuit and a manual circuit are arranged in parallel and an automatic manual changeover switch (SW) is provided, the automatic manual changeover switch (SW) is a manual switch when the timer operation is unnecessary. By switching to the side, the power supply to the timer is cut off and the coil of the smoke exhaust fan (5) conductor (MC2) is supplied with power,
The contact of the relay switch in the smoke exhaust fan (5) conductor (MC2) changes from "open" to "closed".
It was constructed so that the smoke exhaust fan (5) is activated when electricity is supplied to (5).

That is, as described above, in the present invention,
When the torch switch (2) of the welding machine (1) is activated, the smoke exhaust fan (5) of the smoke exhaust device (4) is also automatically activated. Therefore, a relay (RS) is connected in parallel to the conductor (MC1) of the arc welding machine (1), and the smoke exhaust fan of the smoke exhaust device (4) is connected via the relay (RS). (5) is linked,
When the switch (2) is turned "ON", the smoke exhaust fan (5) is automatically activated at the same time when the torch is activated. on the other hand,
Connect the off-delay timer (DT) to the smoke exhaust fan (5) conductor (MC2) of the smoke exhaust device (4), and set the timer to the arc welding machine side (Fig. 4). By setting a longer time (T1) on the side of the exhaust fan for T2) and (T3), the contact of the timer relay (TR) will be restored if the set time has not elapsed even if the timer power is turned off. Even if the relay (RS) contact is opened, the fixed time (timer-set time)
The contact that is the relay switch in the timer relay (TR) is in the "closed" state and the coil of the conductor (MC2) for the smoke exhaust fan (5) is energized and the smoke exhaust fan (5) continues to operate. is there.

The conductor (MC1) of the arc welding machine (1) and the conductor (MC2) for the smoke exhaust fan (5) of the smoke exhaust device (4) are centrally wired in a single control box (CB). Then, the operation of the smoke exhaust fan (5) of the arc welder (1) and the smoke exhaust device (4) is synchronously linked by the operation of the single control box (CB), and at the same time, as shown in FIG. A backflow prevention shutter (6) is provided in the smoke exhaust duct suction portion of the smoke device (4), and the backflow prevention shutter (6) is composed of a pair of left and right opening and closing plates, each of which is attached via a hinge and one end of which is provided with an opening and closing shaft. As a structure, it has a hinged door structure that opens upward and stops downward at a horizontal position. Therefore, when the smoke exhaust fan (5) is operated, it is sucked up by the air flow, and the backflow prevention shutter (6) automatically opens to open the smoke exhaust duct suction portion. When the smoke exhaust fan (5) is stopped, the backflow prevention shutter (6) operates by its own weight to close the smoke exhaust duct suction part. That is, from the operation of the arc welding machine (1) to the operation of the smoke exhaust fan (5) of the smoke exhaust device (4) and the opening and closing of the backflow prevention shutter (6), a series of devices are linked so as to be operated by a single operation. Constructed the arrangement.

[0021]

The present invention is carried out in the form as described above, and has the following effects. A
In a series of welding devices in which the smoke exhausting device (4) is installed in parallel with the arc welding machine (1), when the torch switch (2) of the arc welding machine (1) is operated, the smoke exhausting device is installed in parallel as a peripheral device. Since the smoke exhaust fan (5) of (4) also operates automatically, it is possible to prevent malfunctions such as forgetting to operate the peripheral power supply without the need to operate the power supply of peripheral equipment, and perform welding work and smoke exhaust operation in good timing. It can be operated to facilitate welding workability.

In a series of welding devices in which the smoke exhausting device (4) is installed in parallel with the arc welding machine (1), the relay (RS) is connected in parallel to the conductor (MC1) of the arc welding machine (1). Connected to the relay (R
The smoke exhaust fan (5) of the smoke exhaust device (4) is interlocked via S),
When the torch switch (2) is operated "ON", the smoke exhaust fan (5) is automatically activated at the same time as the operation of the torch (3). Therefore, the arc welding machine (1) is powered. It is also possible to make the power source of the smoke exhausting device (4) independent, and it becomes easy to procure the power source without the need to request the strengthening of power and voltage.

In a series of welding devices in which the smoke exhausting device (4) is installed in parallel with the arc welding machine (1), the relay (RS) is connected in parallel to the conductor (MC1) of the arc welding machine (1). Connected to the relay (R
The smoke exhaust fan (5) of the smoke exhaust device (4) is interlocked via S),
By operating the torch switch (2) "ON",
By connecting the automatic manual changeover switch (SW) with the configuration that the smoke exhaust fan (5) automatically operates at the same time as the operation of the chi (3),
Since the automatic circuit and the manual circuit are configured in parallel, the smoke exhaust fan (5) can be operated independently by switching to the manual side when the timer operation is not required, and convenience can be expanded. it can.

In a series of welding devices in which the smoke exhausting device (4) is arranged in parallel with the arc welding machine (1), the smoke exhausting fan (5) conductor (MC2) of the smoke exhausting device (4) is turned off. Delay timer
(DT) is connected and the timer setting time is set on the arc welding machine side.
Since the time (T1) is set longer for the smoke exhaust fan side than (T2), the smoke exhaust fan (5) operates for a predetermined time even after the welding work is completed, and the smoke exhaust effect is prevented so that gas smoke is not trapped. Can be improved.

In a series of welding devices in which the smoke exhausting device (4) is installed in parallel with the arc welding machine (1), the conductor (MC1) of the arc welding machine (1) and the smoke exhausting device (4) are connected. Since the smoke exhaust fan (5) conductor (MC2) is centrally wired to the single control box (CB), the arc welding machine (1) and the smoke exhaust fan (5) can be operated in a single control box. (CB) can be configured so as to be synchronized in synchronization with each other, and workability can be improved.

In a series of welding devices in which the smoke exhausting device (4) is arranged in parallel with the arc welding machine (1), a backflow prevention shutter (6) is provided at the smoke exhausting duct suction part of the smoke exhausting device (4), The backflow prevention shutter (6) is sucked up by the operation of the smoke exhaust fan (5) to automatically open the smoke exhaust duct suction portion, and when the smoke exhaust fan (5) stops, the backflow prevention shutter (6) is under its own weight. Since the smoke exhaust duct intake is closed, it prevents backflow of smoke and at the same time prevents the operation of the arc welding machine (1) from operating the smoke exhaust fan (5) of the smoke exhaust device (4) and backflow prevention. Until opening and closing of the shutter (6),
By operating the torch switch (2), the smoke exhaust fan (5)
It is possible to increase the convenience of welding work in a single operation by enabling consistent operation synchronously with the operation of.

[Brief description of drawings]

FIG. 1 is a schematic layout view in which an arc welding machine and a smoke exhaust device according to the present invention are arranged in parallel.

FIG. 2 is an enlarged view of an arrow portion shown in FIG. 1, showing a structure of a backflow prevention shutter (6).

FIG. 3 is an electric circuit diagram that configures the equipment arrangement of a welding device that is a main part of the present invention.

FIG. 4 is a timer-operated pattern diagram that is a main part of the present invention.

FIG. 5 is a schematic sectional view of a torch according to the present invention.

[Explanation of symbols]

1 arc welding machine 2 torch switch 3 torch 4 smoke exhaust device 5 smoke exhaust fan 6 Backflow prevention shutter MC1 arc welder conductor MC2 smoke exhaust fan conductor − CB control box SW automatic manual switch RS relay TR timer release

Claims (7)

[Claims] 1. A series of welding devices in which a smoke exhausting device (4) is installed side by side on an arc welding machine (1), wherein the arc welding machine (1)
When the switch (2) is activated, the smoke exhaust fan of the smoke exhaust device (4)
Smoke exhaust device linked to arc welding machine, which is also characterized in that (5) operates automatically. 2. In a series of welding devices in which a smoke exhausting device (4) is installed in parallel on an arc welding machine (1), a relay (RS) is attached to a conductor (MC1) of the arc welding machine (1). Are connected in parallel and the relay
The smoke exhaust fan (5) of the smoke exhaust device (4) is interlocked via (RS), and when the torch switch (2) is turned "ON", the smoke exhaust fan (5) is automatically activated at the same time when the torch is activated. The smoke exhaust device linked to the arc welding machine, which is characterized by the fact that it works in a mechanical manner. 3. A series of welding devices in which a smoke exhausting device (4) is installed in parallel with the arc welding machine (1), wherein a conductor (MC2) for a smoke exhausting fan (5) of the smoke exhausting device (4). An off-delay timer (DT) is connected to and connected to the smoke exhaust device according to claim 2, which is interlocked with the arc welding machine. 4. A conductor (MC2) for a smoke exhaust fan (5) of a smoke exhaust device (4) in a series of welding devices in which a smoke exhaust device (4) is installed side by side on the arc welder (1). The off-delay timer (DT) is connected to and the timer setting time is set longer (T1) on the smoke exhaust fan side than on the arc welding machine side (T2) (T3). The smoke exhaust device linked to the arc welding machine according to claim 3. 5. A series of welding devices in which a smoke exhausting device (4) is installed side by side on an arc welding machine (1), and a relay (RS) is provided on a conductor (MC1) of the arc welding machine (1). Are connected in parallel and the relay
The smoke exhaust fan (5) of the smoke exhaust device (4) is interlocked via (RS), and by operating the torch switch (2) "ON", the smoke exhaust is performed simultaneously with the operation of the torch (3). Interlocked with an arc welding machine, characterized in that the fan (5) also operates automatically and the automatic manual changeover switch (SW) is also connected to form an automatic circuit and a manual circuit in parallel. Smoke exhaust device. 6. A series of welding devices in which the smoke exhausting device (4) is arranged in parallel on the arc welding machine (1), and the conductor (MC1) and the smoke exhausting device (4) of the arc welding machine (1) are provided. ) Of the smoke exhaust fan (5) is centrally wired to the single control box (CB), and the smoke exhaust fan (5) of the arc welder (1) and the smoke exhaust device (4) 2) The smoke exhaust device interlocked with the arc welding machine is characterized in that the operation of (1) is synchronously interlocked with the operation of the single control box (CB). 7. A series of welding devices in which a smoke exhausting device (4) is installed in parallel on an arc welding machine (1), and a backflow prevention shutter (6) is provided at a smoke exhausting duct suction part of the smoke exhausting device (4). The smoke exhausting device interlocked with the arc welding machine according to claim 6, which is provided.