KR20220007202A - three-pass laser cutting gas purifier to purify harmful gases and dust generated during cutting of processed objects using laser cutting machines - Google Patents

Abstract

A three-pass type laser cutting gas purification device is disclosed. The present invention relates to a laser cutting gas purification device for purifying harmful gases and dust generated in the process of laser cutting a workpiece using a laser cutting machine, the laser cutting gas purification device comprising: a collection unit for collecting harmful gases and dust generated in the process of laser cutting a workpiece using a laser cutting machine; and a purification unit provided in communication with the collection unit and provided in a three-stage cabinet type provided with filters having a hexagonal honeycomb structure made of fine meshes having different diameters on the inside.

Description

A three-pass laser cutting gas purifier to purify harmful gases and dust generated during cutting of processed objects using laser cutting machines}

The present invention relates to 'a three-pass type laser cutting gas purifying device for purifying harmful gases and dust generated in the process of cutting an object using a laser cutter', and more specifically, to laser cutting the object to be processed. A sanitary environment is provided to workers by providing a collecting unit that collects harmful gases and dust generated in the process, and a purification unit that purifies harmful gases and dust by having a hexagonal honeycomb structure filtration filters having different diameters on the inside. 3-pass laser cutting gas purification to purify harmful gases and dust generated in the process of cutting objects to be processed using a laser cutting machine It's about the device.

In general, a laser cutter is one of the means for cutting and processing an object such as an iron plate, and by irradiating a laser beam condensed at high density by a condensing lens (also referred to as a 'laser head') to the object to be processed, cutting is performed. .

Compared to oxygen-acetylene cutting, which is widely used for industrial purposes, laser cutting has a narrower cutting width and enables precision cutting in microns, so its use is gradually increasing in the precision processing field.

Examples thereof include sheet metal cutting using a carbon dioxide laser, resistance correction of semiconductors using YAG (Yttrium Aluminum Garnet) laser, and engraving of electronic components.

The laser cutting machine may be configured to include a laser head irradiating a laser beam to an object to be processed, and a surface plate on which the object to be processed is supported. It is formed in a form in which the object to be processed is seated and supported thereon.

In addition to stably supporting the object to be processed, the surface plate of the laser cutting machine must be able to effectively dissipate heat generated during processing and must have adequate resistance to laser light.

In particular, the surface plate of a laser cutting machine is different from the surface plate of a conventional processing equipment in that the influence of laser light interference or reflected light must be considered.

As a type of surface plate, a method of supporting the object to be processed using a number of pins is known. This method minimizes the contact area between the object and the surface (pin) to dissipate heat generated during processing or process It may have an advantage in adhesion of slag, which is a by-product generated during cutting of an object.

As another method, it is known that it has a grid structure or a honeycomb structure and is formed so as to be open at the top and bottom. .

In order to supply an iron plate, which is an object to be processed, to the laser cutter side, the object is positioned so as to be adjacent to the laser cutter side, and the operator manually moves the iron plate to the laser cutter side, or an iron plate using a predetermined iron plate material supply device. The necessary laser cutting is carried out by pushing in one by one.

According to the laser cutter having the above configuration, in the laser cutting process using the laser cutter, iron (Fe) or non-ferrous (Cu) using electric rays and a mixed gas (eg, a gas mixed with oxygen, nitrogen, and air) , Al), etc., a lot of harmful gases and dust are generated when cutting, and since such harmful gases and dust cannot be purified, it can cause fatal health problems to workers as well as increase industrial accidents. and the problem of causing environmental pollution is being pointed out.

KR Patent Publication No. 10-2012-0032072 (2012.04.05) KR Registered Patent Publication No. 10-1806863 (2017.12.04)

Therefore, an object of the present invention to solve this problem is a collection unit that collects harmful gas and dust generated in the process of laser cutting a processing object, and a hexagonal honeycomb filter filter having a different diameter from each other on the inside. By having a purification unit that purifies harmful gases and dust, it is possible to provide a sanitary environment to workers and also to cut the object to be processed using a laser cutter that can greatly improve industrial accident prevention and eco-friendliness. It is to provide a three-pass laser cutting gas purification device for purifying harmful gases and dust generated in the process.

A three-pass type laser cutting gas purifying device for purifying harmful gases and dust generated in the process of cutting an object using a laser cutter according to the present invention for achieving the above object is a laser cutting machine to cut the object to be processed In the laser cutting gas purification device for purifying harmful gas and dust generated in the process of laser cutting, the laser cutting gas purification device, the harmful gas and dust generated in the process of laser cutting the object to be processed using the laser cutting machine a collecting unit for collecting; and a purification unit provided in communication with the collecting unit in a three-stage cabinet type having filters in a hexagonal honeycomb structure made of fine meshes having different diameters on the inside. It may be composed of

The collecting unit includes a cage provided in a structure surrounding the laser cutter, and configured to keep harmful gases and dust generated in the laser cutting process for the object to be processed within a certain range; a blower installed to be spaced apart from the cage and to suck and deliver the harmful gas and dust collected in the cage to the purification unit side; and a suction path connecting the cage and the blower so as to communicate with each other, and providing a passage for moving the harmful gas and dust collected in the cage toward the purification unit through the blower; It may be composed of

The purification unit includes: a housing having a space in which harmful gas and dust moves therein, and having an opening and closing door that can be opened and closed by a hinge at the front, respectively, on the lower, middle, and upper sides; a support located inside the housing, spaced apart from each other by at least three steps at regular intervals up and down; a filtration filter detachably disposed on the supports and having a hexagonal honeycomb structure of fine meshes having different diameters depending on the height at which they are located; Including, but the lower side of the housing is provided with a suction port for sucking the harmful gas and dust delivered by the blower, the upper side of the housing, the harmful gas and dust purified by the first, second, and third filtration filters to the outside An outlet for discharging to the furnace may be provided.

The filtering filter is located in the lower portion of the housing, the first filtering filter for primary filtering the harmful gas and dust delivered by the blower; a second filtration filter located in the middle of the housing and configured to secondary filter harmful gases and dust filtered by the first filtration filter; a third filtration filter located in the upper portion of the housing and tertiarily filtering harmful gases and dust filtered by the second filtration filter; Including, the diameter of the first filtration filter is made of 1 ~ 3mm, the diameter of the second filtration filter is made of 0.7 ~ 0.9mm, the diameter of the third filter is made of 0.2 ~ 0.4mm can

According to the three-pass type laser cutting gas purification device for purifying harmful gases and dust generated in the process of cutting the object to be processed using the laser cutter of the present invention described above, the harmful gas generated in the process of laser cutting the object to be processed and a purifying unit for purifying harmful gases and dust by having a collecting unit for collecting dust and filtration filters having a hexagonal honeycomb structure having different diameters on the inside, thereby providing a sanitary environment for workers there is

In addition, according to the present invention, it is possible to prevent industrial accidents by filtering and purifying harmful gases and dust generated in the process of laser cutting an object to be processed at least three times through filtration filters having a hexagonal honeycomb structure having different diameters. Also, it is possible to greatly improve the eco-friendliness by minimizing environmental pollution.

In addition, according to the present invention, since the first, second, and third filtration filters can be easily cleaned by separating them from the support, semi-permanent use is possible, and the difference in mesh size (diameter) of the first, second, and third filtration filters is reduced. Noise can be reduced by using it, and since the first, second, and third filter filters can be separated from the support, repair and replacement work can be performed conveniently.

1 is a configuration diagram schematically showing the overall configuration of a laser cutting gas purification apparatus of a three-pass method according to the present invention,
2 is a block diagram showing the connection relationship between the laser cutting machine and the collecting unit according to the present invention;
3 is a block diagram showing a purification unit according to the present invention,
4 is a state diagram showing an example of a filtration filter according to the present invention,
5A to 5C are enlarged views of part "A" of FIG. 4, and are diagrams showing the diameters of the first, second, and third filtration filters according to the present invention.

Advantages and features of the present invention, and a method for achieving the same will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. In this specification, the singular also includes the plural unless otherwise specified in the phrase.

As used herein, includes and/or comprising refers to the presence or addition of one or more other components, steps, operations and/or elements other than the recited elements, steps, operations and/or elements. It is used in the sense of not being excluded.

And, “and/or” includes each and every combination of one or more of the recited items.

In addition, the embodiments described in this specification will be described with reference to cross-sectional and/or schematic diagrams that are ideal illustrations of the present invention.

Accordingly, the embodiments of the present invention are not limited to the specific form shown, but also include changes in the form generated according to the manufacturing process.

In addition, in each drawing shown in the present invention, each component may be enlarged or reduced to some extent in consideration of convenience of description.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram schematically showing the overall configuration of a three-pass type laser cutting gas purification apparatus according to the present invention, and FIG. 2 is a configuration diagram showing a connection relationship between a laser cutting machine and a collecting unit according to the present invention, 3 is a block diagram showing a purification unit according to the present invention, FIG. 4 is a state diagram showing an example of a filtering filter according to the present invention, and FIGS. 5A to 5C are enlarged views of part "A" of FIG. As one thing, it is a configuration diagram showing the diameters of the first, second, and third filtration filters according to the present invention.

A laser cutting gas purification apparatus 100 of a three-pass method for purifying harmful gases and dust generated in the process of cutting a processing object using a laser cutter according to the present invention is, as shown in FIG. 1, the processing object ( A collection unit 110 that collects harmful gases and dust generated in the laser cutting process of P), and filters that are provided in communication with the collection unit 110 to filter harmful gases and dust generated during laser cutting are provided It may be configured to include a purification unit (120).

Here, the collection unit 110, as one of the important features of the present invention, performs a function of collecting harmful gas and dust, in particular, a laser cutting object (P) using a laser cutting machine (R / C). Harmful gases and dust generated during the cutting process are collected.

As shown in FIGS. 1 and 2 , the collection unit 110 includes a cage 111 that allows harmful gases and dust to stay within a certain range, and is installed to be spaced apart from the cage 111 and the cage 111 . ) may be configured to include a blower 112 for delivering harmful gases and dust to the purification unit 120 side, and a suction path 113 for communicatively connecting the cage 111 and the blower 112 to each other.

The cage 111 is preferably provided in a structure that surrounds the laser cutting machine (R / C), and the inner space (111a) is a certain range of harmful gases and dust generated in the process of laser cutting processing for the object (P) to be processed. It functions to stay within.

The blower 112 is disposed to be spaced apart from the cage 111 at a predetermined interval, and forms a structure in communication with the cage 111 by the suction path 113 through which the inside is formed.

Such a blower 112 is driven by receiving power, and sucks and delivers the harmful gas and dust collected in the cage 111 to move to the purification unit 120 side to be described later.

In addition, the suction path 113, referring to FIG. 1, connects the cage 111 and the blower 112 in a communicable manner, and removes harmful gases and dust collected in the cage 111 through the blower 112. A passage for moving toward the purification unit 120 is provided.

Meanwhile, another important feature of the present invention is the purification unit 120 provided with a plurality of filters that are provided in communication with the collection unit 110 to filter and purify the harmful gas and dust delivered by the blower 112 . ) is being installed.

As shown in FIGS. 1 and 3, the purification unit 120 is provided in communication with the collection unit 110, and a plurality of It is provided in a three-tier cabinet (cabinet) method equipped with filters.

The purification unit 120 includes a housing 121 having a movement space 121a in which harmful gases and dust move therein, and a support 122 spaced apart from each other at regular intervals up and down inside the housing 121 . And, it may be configured to include a filter filter (124·125·126) that is detachably disposed on the supports (122).

Here, the housing 121 has a space in which harmful gas and dust moves therein, and as shown in FIG. 3 , an opening and closing door 121a that can be opened and closed by a hinge in the front is lower, middle, and upper. Each is provided in a provided configuration.

In this way, if the opening and closing door 121a is configured to be hinged-type opening and closing, the opening and closing door 121a can be opened from the housing 121 according to the working time and period (refer to the arrow ⓐ direction in FIG. 3), if necessary Accordingly, since the first, second, and third filtration filters 124, 125, and 126 to be described later can be separated from the support 122 to easily perform cleaning, semi-permanent use is possible, and the first, second, and third filtration filters 124 ·125·126) can reduce noise by using the difference in mesh size, and since the first·2·3 filter filters (124·125·126) can be separated from the support 122, repair and replacement work can be conveniently performed. can be done

In addition, the lower side of the housing 121 is provided with a suction port 121b through which harmful gas and dust delivered by the blower 112 are sucked, and the first, second, and third filtration filters are provided on the upper side of the housing 121). It is preferable to provide an outlet (121c) for discharging the purified harmful gas and dust to the outside of the structure.

A dust collecting container 121d that can be opened and closed in a sliding manner may be further provided on the lower side of the housing 121 having the above configuration.

In addition, the support 122 is located inside the housing 121, and is spaced apart by at least three steps at a predetermined interval up and down, so that each of the first, second, and third filter filters 124, 125, and 126 is provided. It performs the function of detachably supporting them.

To this end, the support 122, as shown in FIG. 4, is preferably provided with a plate-type plate, and on one side of the first, second, and third filter filters 124, 125, and 126 are sliding movements. Thus, the guide rail 122a is provided so that it can be detachably provided.

On the other hand, the filtration filter according to the present invention, as shown in Figs. 1, 4, 5a to 5c, is detachably disposed on the supports 122, the cohesive force can be sequentially increased according to the height of the position. It is composed of a hexagonal honeycomb structure of fine nets having different diameters so as to perform a function of filtering and purifying harmful gases and dust that have moved from the collection unit 110 to the blower 112 .

These filtration filters can be divided into first, second, and third filtration filters (124·125·126) installed with different upper and lower heights, respectively.

The first filtration filter 124 is located in the lower portion of the housing 121 and performs a function of primary filtering of harmful gases and dust delivered by the blower 112 . The first filtration filter 124 performs primary filtration and purification functions, so that it has a diameter of 1 to 3 mm, but has a diameter of 2 mm in consideration of the primary cohesive force and filtration and purification functions. It is preferable to

And, the second filtration filter 125 is located in the middle of the housing 121 to secondary filtration of harmful gas and dust filtered by the first filtration filter 124, the second filtration filter 125 is The diameter should be 0.7 ~ 0.9mm, but it is preferable to set the diameter to 0.8mm in consideration of the more precise cohesive force and filtration/purification function at the first time.

The third filtration filter 126 is located in the upper portion of the housing 121 to filter the harmful gas and dust filtered by the second filtration filter 125 again, and the diameter is 0.2 to 0.4 mm, but 2 It is desirable to have a diameter of 0.3 mm in consideration of more precise cohesive force and filtration and purification functions.

As in the above configuration, the first, second, and third filtration filters 124, 125, and 126 installed with different upper and lower heights, respectively, can sequentially increase the cohesive force of a fine mesh hexagonal honeycomb having different diameters. When the structure is configured, it is possible to more effectively filter and purify harmful gases and dust (powder) generated during laser cutting processing of the object P.

In the above, preferred embodiments of the present invention have been exemplarily described, but the scope of the present invention is not limited only to such specific embodiments, and within the scope apparent to those skilled in the art for understanding the spirit of the present invention, the components Other embodiments may be suggested by addition, change, deletion, addition, etc. of

100: laser cutting gas purification device;
110: collection unit,
111: cage,
111a: internal space,
112: blower,
113: suction furnace;
120: purification unit,
121: housing;
121a: opening and closing doors;
121b: inlet,
121c: outlet;
121d: dust recovery bin,
122: support,
122a: guide rail,
124: first filtration filter,
125: second filtration filter,
126: a third filtration filter,
P: object to be processed,
R/C : Laser cutting machine.

Claims (4)

In the laser cutting gas purification apparatus 100 for purifying harmful gases and dust generated in the process of laser cutting the processing object (P) using a laser cutting machine (R / C),
The laser cutting gas purification device 100,
a collecting unit 110 for collecting harmful gases and dust generated in the process of laser cutting the processing object (P) using the laser cutter (R/C); and
a purification unit 120 provided in communication with the collecting unit 110 and provided in a three-tier cabinet type having filters of a hexagonal honeycomb structure made of fine meshes having different diameters inside;
A 3-pass laser cutting gas purification device for purifying harmful gases and dust generated in the process of cutting an object using a laser cutter comprising a.
The method according to claim 1,
The collecting unit 110,
a cage (111) provided in a structure surrounding the laser cutting machine (R/C) and allowing harmful gases and dust generated in the laser cutting process for the object (P) to stay within a certain range;
a blower 112 that is installed to be spaced apart from the cage 111, and sucks and delivers harmful gases and dust collected in the cage 111 to move toward the purification unit 120; and
A suction path that communicatively connects the cage 111 and the blower 112, but provides a passage for moving harmful gases and dust collected in the cage 111 toward the purification unit 120 through the blower 112. (113);
A 3-pass laser cutting gas purification device for purifying harmful gases and dust generated in the process of cutting an object using a laser cutter comprising a.
3. The method according to claim 2,
The purification unit 120,
A housing 121 in which a space in which harmful gases and dust moves is formed, and an opening and closing door 121a capable of opening and closing a hinged front is provided on the lower, middle, and upper sides, respectively;
a support 122 located inside the housing 121 and spaced apart from each other in at least three steps at regular intervals up and down;
a filter filter (124·125·126) which is detachably disposed on the supports (122) and has a hexagonal honeycomb structure of fine mesh having different diameters depending on the height at which they are located;
including,
A suction port 121b through which noxious gas and dust delivered by the blower 112 are sucked is provided on the lower side of the housing 121, and the first, second, and third filtration filters are provided on the upper side of the housing 121. 3-pass laser cutting for purifying harmful gases and dust generated in the process of cutting an object to be processed using a laser cutter, characterized in that it is provided with an outlet (121c) for discharging purified harmful gases and dust to the outside gas purifier.
4. The method according to claim 3,
The filter filter (124 · 125 · 126),
a first filtration filter (124·125·126) that is located in the lower portion of the housing (121) and primarily filters harmful gases and dust delivered by the blower (112);
a second filtration filter (124·125·126) that is located in the middle of the housing (121) and filters harmful gases and dust filtered by the first filter (124·125·126);
a third filtration filter (124·125·126) located in the upper portion of the housing (121) and tertiarily filtering harmful gases and dust filtered by the second filtration filter (124·125·126);
includes,
The first filtration filter (124·125·126) has a diameter of 1 to 3 mm, and the second filter filter (124·125·126) has a diameter of 0.7 to 0.9 mm, and the third filtration The filter (124·125·126) has a diameter of 0.2 to 0.4 mm, and a 3-pass laser cutting gas purification for purifying harmful gases and dust generated in the process of cutting an object using a laser cutter. Device.

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