KR19990040127A - Spatter shield of MIG welding machine - Google Patents

Abstract

The present invention is to provide a spatter shielding device of the MIG welding machine for preventing the spatter from splashing on the back of the hand by installing a protective net on the torch of the MIG welding machine and spreading the protective net during welding, the configuration of the clamp A bracket 32 fixed to the torch 10 by 30, a link 36 symmetrically mounted to the bracket 32 by a fixing pin 34, and with this link 36 Consists of a guard net 42 foldably attached to the guard (40) extending from.

Description

DEVICE FOR PROTECTING SPATTERS OF A MIG WELDING MACHINE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sputter shield of a mig welder, and more particularly, by installing a guard net on a torch of a mig welder and spreading the guard net during welding, thereby preventing the spatter from splashing on the hand. It relates to a shield device.

In general, in a production line or a maintenance shop of an automobile, electric resistance spot welding for generating heat by using a contact resistance and a specific resistance generated at this time by contacting two base metals to be welded through a current is widely used. However, the resistance spot welding is limited to some operations because the point of use is limited and both parts of the machine determine the welding result, so there is no complete reliability. In order to compensate for this, in recent years, the diffusion of carbon dioxide gas arc welding (MIG-metal inert gas) using an inert gas (hereinafter referred to as MIG welding) is increasing.

1 is a configuration diagram showing a general MIG welding machine, the configuration thereof will be described according to the operating sequence. In the power transformer 2, the AC power is transformed to 15 to 30V and rectified to a DC voltage by a rectifier rectifier. The current requires 50 to 200 A and the wire is wound in large quantities on the spool 4 and sent to the torch 10 by means of the wire liner 6 through the plug liner of the torch cable 8.

Then, the contact tip 22 at the tip of the torch 10 receives an arc of welding current from the power transformer 2 and generates an arc when the wire tip approaches the weld. At this time, the carbon dioxide gas covering the welded portion is regulated by the heater regulator 16 from the gas cylinder 14, and then passed through the gas valve 18 to the gas hose in the torch cable 8, so that the nozzle at the tip of the torch 10 ( 20).

All of these operations are performed by the control panel 24 of the main body shown by the dotted line in one operation of the trigger switch 12 attached to the torch 10. That is, the control panel 24 simultaneously opens and closes the gas valve 18, starts and stops the wire transfer motor 7, and opens and closes the main contactor through the main current. Therefore, welding is performed continuously in the state which hold the trigger switch 12 of the torch 10, and all operation | movement is stopped when a switch is released. The earth cable 28 is grounded to the negative pole of the power transformer 23 by the earth clamp 26 fixed to the base material to be welded.

In the MIG welding machine having such a configuration, a spatter generated during welding splashes on the back of a worker's hand, and may be injured. There is a problem of deterioration.

Therefore, the present invention is to solve these problems, by installing a protective net that can be folded on and off the torch to protect the back of the operator's hand from the scattered spatter and to hang the torch after work to clean the surroundings To provide a spatter shield of the welding machine.

1 is a configuration diagram showing a general MIG welding machine,

Figure 2 is a front view showing the configuration of a torch equipped with a spatter shield of the present invention

Degree,

Figure 3 is an exemplary view showing a state of use of the protection net employed in the present invention.

<Description of Symbols for Major Parts of Drawings>

2: power transformer 4: wire spool

6: wire feed roller 8: torch cable

10: torch 12: trigger switch

14 carbon dioxide gas cylinder 16: heater regulator

18 Solenoid Valve 20 Nozzle

22 contact tip 24 control panel

30: clamp 32: bracket

36: Link 38: Handle

40: guard 42: guard net

An object of the present invention described above is a MIG welder which performs welding using an arc generated by a current transmitted from a power transformer according to an operation of a trigger switch attached to a torch while blowing gas supplied from a carbon dioxide gas cylinder to a nozzle. The MIG welding machine comprising: a bracket fixed to a torch by a clamp, a link symmetrically mounted to the bracket by a fixing pin, and a guard net foldably attached to a guard extending from the link. Is achieved by a sputter shield.

Hereinafter, a spatter shielding apparatus of a MIG welding machine according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 and 3.

Figure 2 is a front view showing the configuration of the torch equipped with the spatter shield of the present invention, Figure 3 is an exemplary view showing a state of use of the protection net employed in the present invention, the same parts as the conventional structure described in FIG. It is indicated by a sign.

First, for the sake of simplicity, in FIG. 2, the gas supplied from the carbon dioxide cylinder 14 is blown out by the nozzle 20 and transferred from the power transformer 2 according to the operation of the trigger switch 12 attached to the torch 10. Only the portion of the torch 10 of the MIG welder which performs the welding using the arc generated by the electric current generated is shown. In a preferred embodiment of the present invention, to protect the back of the operator's hand from the spatter generated during welding, the guard net 42 is mounted to be folded and detached.

In more detail, the torch 10 is fixed to the bracket 32 using the clamp 30 to the torch 10, and then the link 36 is pivotally symmetrically connected to the bracket 32 using the fixing pin 34. Was mounted as. Here, the link 36 has an approximately X-shape, and a handle 38 is formed at the front thereof. Therefore, the worker grasps the handle 38 by hand, so that the protective net 42 can be folded and released.

A guard 40 is formed at the other end of the link 36 on which the handle 38 is formed, and a guard net 42 is attached to the guard 40 to block scattered spatters.

Next, the state of use of the spatter blocking device of the present invention with reference to FIG.

3 is an exemplary view showing a state of use of the protection net employed in the present invention, the unfolded state of the protection net 42 is shown in solid lines, the folded state is shown in phantom lines.

First, before welding, the link 36 is stored in a folded state, as shown by an imaginary line, and the guard net 42 is protected in a state wrapped by the guard 40.

In this state, when the operator opens the handle 38 before welding, the link 36 is rotated on the bracket 32 around the fixing pin 34, the guard 40 is unfolded, attached to the guard 40 As shown by the solid line, the protective net 42 is able to protect the back of the worker's hand from the spatter which is spread and scattered.

After the operation, the handle 38 is folded, the guard net 42 is folded, and the torch 10 can be hung by the link 36, so that the surroundings are neatly trimmed.

According to the present invention described above, by shielding the scattered spatter by spreading the protective net installed on the torch during welding, it protects the back of the worker's hand from the spatter and hang the torch after work to clean the surroundings have.

Claims (2)

The arc generated by the electric current transmitted from the power transformer 2 in accordance with the operation of the trigger switch 12 attached to the torch 10 while blowing the gas supplied from the carbon dioxide gas cylinder 14 to the nozzle 20 In the MIG welding machine which performs welding by using, A bracket 32 fixed to the torch 10 by a clamp 30, A link 36 symmetrically mounted to the bracket 32 by a fixing pin 34; Spatter shield of the MIG welder, characterized in that consisting of a guard net 42 foldably attached to the guard (40) extending from the link (36). The method of claim 1, One end of the link 36, the guard net 42, the spatter shielding device of the MIG welder, characterized in that the handle (38) is formed.