KR200326626Y1 - Apparatus for protecting plasma cutter - Google Patents

Abstract

The present invention relates to a torch protection device for plasma cutting, comprising: an upper plate; A lower plate detachably coupled to the upper plate; A torch for plasma cutting which is disposed to be partially exposed through the torch holes formed in the upper and lower plates, and performs a plasma cutting operation when the upper and lower plates are coupled in place; any one of the upper and lower plates; A plurality of zero adjustment position lock pins protruding from one toward the other; It is provided on the other side, characterized in that it comprises a pin receiving portion for supporting the position lock pin.

As described above, the zero adjustment is very easy and the structure is simple to increase the work efficiency while easily removing and reducing the probability of failure, thereby reducing the maintenance cost.

Description

Torch protection device for plasma cutting {Apparatus for protecting plasma cutter}

The present invention relates to a torch protection device for plasma cutting, and more particularly, the zero adjustment is very easy, and the structure is simple, so that the work efficiency increases, detachment is easy, and the probability of failure is reduced by that. The present invention relates to a torch protection device for plasma cutting, which can reduce maintenance costs.

The plasma cutting device generates a primary arc between the nozzle and the electrode in the torch to make the internal space of the torch into a plasma state, and blows the plasma with compressed air to the metal to be cut, thereby cutting the electrode and the torch. After the desired metal is formed in the plasma state, a cutting current is applied to the plasma state between the electrode and the metal to cut the metal.

Initially, the voltage for constructing the plasma state between the torch nozzle and the electrode is determined by the distance between the nozzle and the electrode and the pressure of the compressed air applied at this time. On the other hand, the voltage between the electrode and the metal in which the main plasma state is generated is known to be able to cut at about DC 100V since the main plasma state starts from the plasma state by arc ignition.

Such a plasma cutting device is widely used for cutting iron sheets or metal sheets at, for example, metal sheet industrial sites, automobile production sites, heavy industry sites and ship building sites.

More easily described, plasma cutting refers to a process of locally melting and cutting an iron plate with a plasma flame generated from a torch constituting a plasma cutting device. After holding the torch, it moves along the line and cuts the iron plate with the plasma flame generated by the torch.

However, when the operator directly grips the torch and then cuts the iron plate, there is a disadvantage that the quality of the plasma cutting may be significantly reduced due to severe errors in the cutting line due to the shaking of the worker who grips the torch or inexperience.

Thus, in the related art, a separate device for supporting the torch (these are collectively referred to as a "plasma cutting device") is further provided, and then the cutting operation can be automatically performed by a predetermined NC file.

Although not shown, the conventional plasma cutting apparatus includes an upper plate, a lower plate coupled to the upper plate, and a torch for plasma cutting supported on the upper and lower plates.

The torch body supporting the torch is to supply power to the torch with the upper and lower views coupled in place, if the upper and lower plates are separated from each other or combined depending on external factors or other site conditions. If the condition is distorted, power to the torch will be stopped.

To this end, a detachable detection sensor for detecting their exact position between the upper and lower plates, an alarm device for displaying the signal by the detachable detection sensor to the outside, and a bar for zero adjustment between the upper and lower plates In addition to the ball bearing and a plurality of springs, the upper and lower plates themselves have a half moon shape and are coupled to each other.

By the way, in the conventional plasma cutting apparatus, as described above for precise plasma cutting, a large number of components are provided, which makes the adjustment of zero easy and inconvenient as well as the complicated structure, increasing the probability of failure. It is difficult to attach and remove, and the maintenance cost is also high.

The present invention is devised to solve the above problems, the object of the present invention is not only easy to adjust the zero (Zero) adjustment, but also the structure is simple, the work efficiency is increased while the easy removal and failure probability It is to provide a plasma cutting device that can be reduced so that the maintenance cost is also reduced.

1 is a schematic perspective view of a torch protection device for plasma cutting according to the present invention;

Figure 2 is an exploded perspective view of the torch protection device for plasma cutting shown in Figure 1,

* Explanation of symbols for the main parts of the drawings

10: torch 20: upper plate

22: position lock pin 25: sensor

30: lower plate 32: pin receiving portion

35: permanent magnet

The present invention for achieving the above object, the upper plate; A lower plate detachably coupled to the upper plate; A torch for plasma cutting which is disposed to be partially exposed through the torch holes formed in the upper and lower plates, and performs a plasma cutting operation when the upper and lower plates are coupled in place; any one of the upper and lower plates; A plurality of zero adjustment position lock pins protruding from one toward the other; It is achieved by providing a torch protection device for plasma cutting, characterized in that it comprises a pin receiving portion provided on the other to receive the position lock pin.

Here, the position lock pins are arranged in pairs at predetermined intervals on one side of the upper plate facing the lower plate.

At least one of the upper and lower plates is provided with a plurality of permanent magnets for coupling with the other.

A sensor unit provided on at least one of the upper and lower plates and detecting the upper and lower plates when they are separated from each other or displaced in a fixed position; The display unit may further include a display unit configured to externally display the signal sensed by the sensor unit.

In this case, the display unit may be employed as at least one of a lamp for transmitting a visual signal and a buzzer for transmitting an audio signal.

Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.

1 is a perspective view of a plasma cutting torch protection device according to the present invention, Figure 2 is an exploded perspective view of the plasma cutting torch protection device shown in FIG.

As shown in these figures, the torch protection device for plasma cutting according to the present invention, the upper plate 20, the lower plate 30 detachably coupled to the upper plate 20, and the upper and lower plates ( It consists of a plasma cutting torch 10 disposed to be partially exposed to the lower plate 30 side through the torch hole (10a) formed in the 20,30.

Although the torch 10 for plasma cutting may have a shape different from that shown, in the present invention, the lower end portion is formed into a conical shape while being formed into a relatively large cylindrical shape.

Of course, when the torch 10 is examined in detail, an electrode is coupled to the conical head, and a nozzle portion for generating a plasma flame is provided in front of the electrode, and the electrode and the nozzle portion are protected by a predetermined cap. However, the configuration thereof is already known, and therefore, the description and not shown in the present embodiment.

As described above, the plasma cutting operation by the plasma cutting land 10 is automatically performed by a separate NC file input to the torch body 12 supporting the torch 10, the upper and lower plates It is set as the condition that (20,30) couple | bonds in mutually correct position.

The torch body 12 and the torch 10 actually form a huge structure, which is schematically illustrated in this drawing. Accordingly, the upper plate 20 is supplied with power from the torch body 12 in a state where the upper plate 20 is coupled with the lower plate 30 to generate a plasma flame from the torch 10.

At this time, a predetermined cutting line is already formed in the iron plate to be cut, and the torch 10 supported by the upper plate 20 may cut the iron plate while moving along the cutting line.

Therefore, a means is needed to allow the upper plate 20 and the lower plate 30 to be coupled in position with each other, and the torches 10 are coupled to the upper and lower plates 20 and 30 by this means. ) Zero can be set.

In order to adjust the zero point of the torch 10, the present invention projects a pair of position lock pins 22 spaced apart from each other on the plate surface of the upper plate 20 facing the lower plate 30, and lower plate 30. In the plate surface is provided with a pin receiving portion 32, the pair of position lock pins 22 are accommodated. Of course, the position locking pin 22 may be provided on the lower plate 30 and the pin receiving portion 32 may be provided on the upper plate 20, and the number of the position locking pins 22 may be two or more. none.

As such, in the present invention, it is possible to easily adjust the zero point of the torch 10 by enabling the in-situ coupling of the upper and lower plates 20 and 30 with a simple configuration of the position lock pin 22.

On the other hand, when the zero point adjustment of the torch 10 is completed through the position lock pin 22, the upper and lower plates 20 and 30 may not be easily separated from each other, but in reverse, external force may be applied. In this case, the upper and lower plates 20 and 30 should be separated so that the work of the land is stopped. If, as will be described later, if the external force is severe, expensive equipment can be easily burned if the upper and lower plates 20, 30 are not separated from each other.

To this end, by allowing the upper and lower plates 20 and 30 to be separated by an external force, and to increase the coupling force of the upper and lower plates 20 and 30 when there is no separate external force, A plurality of permanent magnets 35 are installed on the plate surface of the lower plate 30 facing the upper plate 20, and the upper plate 20 is formed of steel to form magnetic force.

Thus, in the state in which the upper plate 20 and the lower plate 30 are coupled to each other, the attraction force between the permanent magnet 35 and the upper plate 20 acts, so that the upper and lower plates 20 and 30 do not fall easily. do. At this time, according to the number of permanent magnets 35 installed in the lower plate 30 can be appropriately adjusted the tension generated between the upper and lower plates (20, 30). On the other hand, in the present invention, the lower plate 30 is formed of aluminum, but may be replaced with another material.

Thus, even if the upper and lower plates 20 and 30 are adjusted by the position lock pin 22 and the upper and lower plates 20 and 30 are mutually coupled by the permanent magnet 35, external factors Alternatively, depending on other site conditions, the upper and lower plates 20 and 30 may be separated from each other or may be distorted.

Field conditions include, for example, a breakaway impact due to thermal deformation of residues generated during plasma cutting, an impact due to flipping of the member, a jamming of the torch 10 when cutting a hole or a small member, a jamming due to tension of a cable, and the like. There may be branches.

If the plasma cutting operation by the torch 10 is continued under the above circumstances, the desired cutting surface may not be obtained and the expensive torch 10 may be damaged. Therefore, if this occurs, it will have to detect this, stop the work of the torch 20 and notify the outside to set again.

To this end, in the present invention, while the upper and lower plates 20 and 30 are separated from each other or shifted from each other in a fixed position, the sensor unit 25 may be provided to detect the upper and lower plates 20 and 30. The display unit further displays a signal sensed by the external signal.

As the sensor part 25, it employ | adopts with several proximity sensors, The predetermined hole 25a is formed in the plate surface of the upper plate 20, and the proximity sensor is inserted in the inside. Therefore, even if the upper and lower plates 20 and 30 are separated from each other, breakage of the sensor unit 25 does not appear easily. Although not directly shown in the drawings, any one of a lamp for transmitting a visual signal and a buzzer for transmitting an audio signal may be employed as the display unit.

Thus, during the plasma cutting operation on the iron plate through the torch 10, if the upper and lower plates 20, 30 are separated from each other or the positional coupling is misaligned by the external force or other field conditions, the sensor unit 25 ) Detects and stops the operation of the torch 10 and informs the outside through the display unit.

Therefore, the operator may combine the upper and lower plates 20 and 30 again with the position lock pins 22 and the pin receiving portion 32 to the correct positions so that the plasma cutting operation through the land 10 may be performed. .

As described above, according to the present invention, the zero adjustment is very easy and the structure is simple to increase the work efficiency while being easy to attach and detach, and the probability of failure is reduced, thereby reducing maintenance costs.

As described above, according to the present invention, not only zero adjustment is very easy, but also the structure is simple, so that the work efficiency increases, detachment is easy, and the probability of failure is reduced by that. There is.

Claims (5)

An upper plate; A lower plate detachably coupled to the upper plate; A torch for plasma cutting which is disposed to be partially exposed through the torch holes formed in the upper and lower plates, and performs a plasma cutting operation when the upper and lower plates are coupled in place; A plurality of zero adjustment position lock pins protruding from one of the upper and lower plates toward the other; Torch protection device for plasma cutting comprising a pin receiving portion provided on the other to receive the position lock pin. The method of claim 1, The position lock pin is a plasma cutting torch protection device, characterized in that arranged in a pair at a predetermined interval on one side of the upper plate toward the lower plate. The method of claim 1, Torch protection device for plasma cutting, characterized in that at least one of the upper and lower plates is provided with a plurality of permanent magnets for coupling with the other. The method of claim 1, A sensor unit provided on at least one of the upper and lower plates and detecting the upper and lower plates when they are separated from each other or displaced in a fixed position; Torch protection device for plasma cutting further comprising a display unit for displaying the signal sensed by the sensor to the outside. The method of claim 4, wherein The display unit may include at least one of a lamp for transmitting a visual signal and a buzzer for transmitting an audio signal.