KR101487159B1 - Carbon dioxide injection system for removal of soot - Google Patents

Carbon dioxide injection system for removal of soot Download PDF

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Publication number
KR101487159B1
KR101487159B1 KR20140056887A KR20140056887A KR101487159B1 KR 101487159 B1 KR101487159 B1 KR 101487159B1 KR 20140056887 A KR20140056887 A KR 20140056887A KR 20140056887 A KR20140056887 A KR 20140056887A KR 101487159 B1 KR101487159 B1 KR 101487159B1
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KR
South Korea
Prior art keywords
carbon dioxide
soot
unit
base material
injection nozzle
Prior art date
Application number
KR20140056887A
Other languages
Korean (ko)
Inventor
김태철
이춘우
손종성
Original Assignee
아진산업(주)
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Publication date
Application filed by 아진산업(주) filed Critical 아진산업(주)
Priority to KR20140056887A priority Critical patent/KR101487159B1/en
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Publication of KR101487159B1 publication Critical patent/KR101487159B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Abstract

The present invention relates to a carbon dioxide injection system for soot removal comprising: a table having a mounting surface wherein a basic material is mounted on the upper side; a carbon dioxide producing unit installed in one side of a target area to produce carbon dioxide; a carbon dioxide injecting unit connected with the carbon dioxide producing unit to inject carbon dioxide in a soot direction formed in the basic material; and a transferring unit having the carbon dioxide injecting unit in one side to transfer the carbon dioxide injecting unit in the direction corresponding to the soot. The carbon dioxide injecting unit includes: an injection nozzle installed in one side of the transferring unit, and having an injection hole connected with the carbon dioxide producing unit in one side to inject carbon dioxide through the injection hole; and an airtight cap installed in one side of the transferring unit to arrange the injection nozzle in one side inside, having an ejection hole in one side, and to block the injection nozzle from an outside as the lower end is supported by one side of the basic material when the injection nozzle injects carbon dioxide to the soot. The present invention has an effect of significantly increasing the removal efficiency of soot, and markedly shortening the working time required to remove soot by removing soot due to a chemical action of carbon dioxide and soot by injecting carbon dioxide to soot formed in a basic material after stud welding.

Description

[0001] The present invention relates to a carbon dioxide injection system for removing soot,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soot removing carbon dioxide spraying apparatus, and more particularly, to a soot removing carbon dioxide spraying apparatus capable of remarkably shortening the time required for soot removal by automatically performing a soot removing operation, And more particularly, to a carbon dioxide injection device for removing carbon dioxide.

Welding is used as an indispensable processing technique to apply heat and pressure to the same or different kinds of metal materials to manufacture vessels, vehicles, aircraft, construction, various industrial machines or household appliances.

In particular, stud arc welding is a method for bonding stud bolts to a base material in the manufacturing process of a vehicle. In such stud arc welding, a short rod such as a stud bolt is vertically contacted on a flat surface, Is slightly removed from the base material to generate an arc, and when it is properly melted, the stud bolt is pushed onto the melting paper to be welded.

Such stud arc welding has an advantage in that the stud bolt can be bonded to the base material in a short time. However, when the surface of the welding base material or the stud bolt plating foreign matter is melted by the arc heat in the welding process or incomplete burning occurs in the arc welding, .

Accordingly, when the surface of the base material to which the stud bolts are bonded is coated, the painted paint of the base material may be peeled off, resulting in poor coating quality.

In order to solve the above problems, in order to remove the soot formed on the surface of the base material, a manual brush having a plurality of metal wires embedded in the body is manually operated by a plurality of operators, The productivity of the product is deteriorated.

In order to solve such a problem, a soot removing apparatus capable of effectively removing soot has been developed.

1 is a view showing a conventional soot remover.

1, the conventional soot removal apparatus 100 includes a robot arm 110 made of polygonal joints, a rotary brush 120 rotatably installed at the tip of the robot arm 110, The brush 120 includes a rotation plate 121 formed in a substantially circular plate shape and a brush 122 formed of a plurality of metal wires coupled to one side of the rotation plate 121.

The conventional soot removal apparatus 100 transfers the rotating brush 120 to a region where soot is generated after the stud welding, and when the brush portion 122 is in contact with one side of the sooted base material, Soot is removed.

However, the conventional soot removal apparatus 100 removes soot through friction between a metal wire and soot. As the metal wire is worn or damaged due to the friction, it is periodically replaced, so that maintenance costs are additionally incurred .

Although the conventional soot removal apparatus 100 has the effect of shortening the working time as compared with the manual operation, there is a problem that the soot removal efficiency is largely lowered by removing about 70% there was.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a soot removing apparatus and a soot removing apparatus which can automatically reduce soot removal efficiency, And a carbon dioxide injection device for removing soot.

It is another object of the present invention to provide a soot removal carbon dioxide injection device capable of effectively removing sulfur dioxide even with a small amount of carbon dioxide.

According to an aspect of the present invention, there is provided a soot removing carbon dioxide spraying apparatus for removing soot formed on a base material after stud welding, the apparatus comprising a table having a seating surface on which the base material is seated, A carbon dioxide generating unit connected to the carbon dioxide generating unit and configured to inject carbon dioxide in a soot formed on the base material and the carbon dioxide injecting unit installed on one side of the carbon dioxide generating unit, And a transfer unit for transferring the carbon dioxide injection unit to a position corresponding to the soot, wherein the carbon dioxide injection unit is installed on one side of the transfer unit, and a spray hole connected to the carbon dioxide generation unit is formed on one side, A spray nozzle for spraying carbon dioxide Wherein the injection nozzle is provided at one side of the transfer unit so that the injection nozzle is disposed at one side thereof, and a discharge hole is formed at one side thereof. When the injection nozzle injects carbon dioxide into the soot, a lower end is supported on one side of the base material, And an airtight cap for blocking the outside from the outside.

It is preferable that the carbon dioxide generating unit generates dry ice.

delete

In addition, the sealing cap may be provided on one side of the transfer unit so as to be movable in the up-and-down direction. The sealing cap may include a sealing body having the injection nozzle disposed therein in a state that the lower portion thereof is open, And a cushioning member interposed between the hermetically sealed body and the transfer unit and providing an elastic force downward to the hermetically closed body.

And an opening / closing member provided on one side of the closed cap which is movable in an inward and outward direction of the closed cap, the open / close member opening / closing the discharge hole, and the open / And an elastic member that provides an elastic force toward the inside of the closed cap.

According to the present invention, after the stud welding, carbon dioxide is sprayed onto the soot formed on the base material, soot is removed by the chemical action of carbon dioxide and soot, so that the working time for removing the soot can be remarkably shortened, It is possible to greatly improve the removal efficiency of the exhaust gas.

In addition, the present invention allows the carbon dioxide injection area to be hermetically sealed by using the hermetically sealed cap and the opening and closing part, and when the pressure inside the hermetically sealed cap is higher than a preset pressure, the carbon dioxide is discharged to the discharge hole through the opening and closing part, There is an effect that it can be effectively removed.

1 shows a conventional soot remover,
2 is a sectional view of a carbon dioxide injection device for soot removal according to an embodiment of the present invention,
3 is a view illustrating a state in which carbon dioxide is injected from a carbon dioxide spraying unit according to an embodiment of the present invention,
4 is a cross-sectional view of a carbon dioxide injection device for soot removal according to another embodiment of the present invention,
5 is a view showing a state in which a hermetically closed body according to another embodiment of the present invention is closely attached to a base material,
6 is a view showing a state in which an opening / closing part is opened according to another embodiment of the present invention.

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

2 is a sectional view of a carbon dioxide injection device for removing soot according to an embodiment of the present invention.

2, the carbon dioxide injection device 1 for soot removal according to an embodiment of the present invention includes a table 10, a carbon dioxide generating unit 20, a carbon dioxide spraying unit 30 and a transfer unit 40, .

The table 10 includes a table body 11 having a seating surface on which a base material M on which stud welding has been completed is placed and a base material 11 formed on one side of the top surface of the table body 11, And a jig (12) for fixing the jig (M).

The table 10 serves to prevent the base material M from flowing when the soot F formed on the base material M is removed.

The carbon dioxide generating unit 20 is provided at one side of the work area or at one side of the table 10 and generates carbon dioxide to be injected from the carbon dioxide injecting unit 30 to be described later and supplies the carbon dioxide to the carbon dioxide injecting unit 30 do.

The carbon dioxide generating unit 20 generates dry ice and provides the carbon dioxide produced by vaporization of the generated dry ice to the carbon dioxide spraying unit 30. The carbon dioxide generating unit 20 ) Can be used as a commercially available dry ice producing apparatus.

The carbon dioxide spraying section 30 includes a spray nozzle 31 provided at one side of a transfer unit 40 to be described later and formed with a spray hole at one side thereof and a connection pipe 31 connecting the spray nozzle 31 and the carbon dioxide generating section 20 And serves to remove the soot F by injecting carbon dioxide in the direction of soot F formed on the base material M. [

The transfer unit 40 serves to transfer the carbon dioxide spraying unit 30 coupled to one side to a position corresponding to the soot F among the base materials M placed on the upper surface of the table 10, This possible articulated robot arm can be used.

It is obvious that such a articulated robot arm is well known to those who have ordinary knowledge in the art by purchasing a commercially available robot arm. Thus, a detailed description of the robot arm will be omitted.

3 is a view showing a state in which carbon dioxide is injected from a carbon dioxide spraying part according to an embodiment of the present invention.

The operation of the carbon dioxide injection device for soot removal 1 according to an embodiment of the present invention having such a structure will be described with reference to FIG.

First, when the base material M is transferred from the stud welding process after the stud welding process and is placed on the top surface of the table body 11, the base material M is fixed using the jig 12. [

When the base material M is fixed, the transfer unit 40 transfers the carbon dioxide spraying part 30 according to the coordinate value of the welding part provided from the stud welding process so that the carbon dioxide spraying part 30 moves the welding part, Soot (F) formed on the surface of the substrate.

At this time, the carbon dioxide generated from the carbon dioxide generating unit 20 is supplied to the carbon dioxide spraying unit 30, and the carbon dioxide is injected into the soot F through the injection nozzle 31 to perform a chemical reaction between the carbon dioxide injected and the soot F The soot F is removed.

4 is a cross-sectional view of a carbon dioxide injection device for soot removal according to another embodiment of the present invention.

The basic structure of the embodiment of FIG. 4 is the same as that of the embodiment of FIGS. 2 to 3, but is formed in a structure capable of effectively removing soot F even with a smaller amount of carbon dioxide.

As shown in FIG. 4, the present embodiment is different from the previous embodiment in that the carbon dioxide spraying section 30 includes the spraying nozzle 31, the connecting pipe 32, and the sealing cap 33.

The present embodiment further includes an opening / closing member 50 provided at one side of the sealing cap 33 and an elastic member 60. Hereinafter, this embodiment will be described in more detail.

The carbon dioxide spraying unit 30 includes the spraying nozzle 31, the connecting pipe 32 and the sealing cap 33 as described above. The spraying nozzle 31 and the connecting pipe 32 are preheated Descriptions of the injection nozzle 31 and the coupling pipe 32 are omitted in order to avoid redundant substrate with the same configuration as the example.

The sealing cap 33 includes a sealing body 33a and a sealing member 33b and a cushioning member 33c. In the state that the injection nozzle 31 is disposed inside the sealing cap 33, And contacts the one side of the base material M to seal the carbon dioxide injection area when the injection nozzle 31 is transferred to the position corresponding to the soot F. [

The hermetically sealed body 33a is formed in a substantially cylindrical shape having a receiving space 33aa formed therein and an open bottom, and a discharge hole 33ab for discharging the carbon dioxide injected to one side is formed.

The closed body 33a closes the injection area of the carbon dioxide when the carbon dioxide is injected from the injection nozzle 31.

The sealing member 33b is formed of a soft material such as urethane or rubber and is coupled to the lower end of the hermetically closed body 33a so that when the hermetically sealed body 33a contacts one side of the base material M, (M) can be further improved.

The buffer member 33c is interposed between the hermetically sealed body 33a and the transfer unit 40 and provides an elastic force downward to the hermetically sealed body 33a so that when the hermetically sealed body 33a contacts one side of the mother material M, (33a) can be more closely attached to the base material (M) by the sealing member (33b).

The opening and closing member 50 is installed at one side of the hermetically closed body 33a formed with the discharge hole 33ab of the hermetically closed body 33a so as to be movable in the inside and outside direction of the hermetically closed body 33a, 33ab.

That is, the opening and closing member 50 closes the inside of the closed body 33a by opening and closing the discharge hole 33ab to prevent the outflow of the carbon dioxide or to allow the discharge hole 33ab to communicate with the outside, It plays a role.

The elastic member 60 is interposed between the opening and closing member 50 and the closed body 33a to provide the opening and closing member 50 with an elastic force inward of the closed body 33a, Closing member 50 can open the discharge hole 33ab when the inside of the closed body 33a becomes higher than a predetermined pressure by pressing the inside of the closed body 33a toward the inside of the closed body 33a.

FIG. 5 is a view illustrating a state in which a hermetically closed body according to another embodiment of the present invention is closely attached to a base material, and FIG. 6 is a view illustrating a state in which an opening and closing part according to another embodiment of the present invention is opened.

The operation of the carbon dioxide injection device 1 for soot removal according to another embodiment of the present invention having such a configuration will be described with reference to FIGS. 5 and 6. FIG.

The transfer unit 40 transfers the injection nozzle 31 to a position corresponding to the soot F and then moves downward so that the lower end of the closed body 33a is moved to one side of the base material M, As shown in Fig.

At this time, the closed body 33a seals the region corresponding to the soot F, that is, the region where the carbon dioxide is injected. The diameter of the closed body 33a is selectively formed according to the size of the soot F .

When the lower end of the closed body 33a contacts the one side of the base material M as the transfer unit 40 moves downward as described above, the lower end of the closed body 33a contacts one side of the base material M , The transfer unit 40 is further moved downward by a certain distance in a state in which the lower end of the hermetically closed body 33a is in contact with one side of the base material M. [

As shown in FIG. 5, the hermetically sealed body 33a is moved upwards by a predetermined distance and tightly adhered to one side of the base material M by the buffer member 33c.

Thereafter, carbon dioxide is injected from the injection nozzle 31 in a state where the hermetically sealed body 33a is in close contact with one side of the base material M, and the soot F is removed while the injected carbon dioxide and the soot F chemically interact.

On the other hand, among the carbon dioxide injected, some carbon dioxide which has not reacted with soot (F) conveys in the inside of the Millefe body and reacts with soot (F), so that this embodiment can reduce the soot F removal efficiency even with a small amount of carbon dioxide Can be improved.

Next, when the internal pressure of the closed body 33a becomes higher than a predetermined pressure as the carbon dioxide is continuously injected from the injection nozzle 31, that is, when the pressure of the closed body 33a becomes larger than the elastic force of the elastic member 60 As shown in FIG. 6, the opening / closing part moves toward the outside of the hermetically closed body 33a by the pressure, and the discharge hole 33ab is opened and the carbon dioxide is discharged to the outside through the opened discharge hole 33ab.

When the soot removal operation is completed as described above, the transfer unit 40 is moved upward to release the contact state between the hermetically sealed body 33a and the mother material M, and the worker removes the mother material M, .

The other structures are the same as those of the above-described basic embodiment, and the remaining description will be omitted.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications or changes as fall within the scope of the invention.

1: carbon dioxide injection device for soot removal 10: table
11: table body 12: jig
20: carbon dioxide generator 30: carbon dioxide generator
31: injection nozzle 32: connection pipe
33: sealing cap 33a: sealing body
33aa: receiving space 33ab: emitting hole
33b: sealing member 33c: buffer member
40: transfer unit 50: opening / closing member
60: elastic member

Claims (5)

A soot removing carbon dioxide spraying apparatus for removing soot formed on a base material after stud welding,
A table on which a seating surface on which the base material is seated is formed;
A carbon dioxide generating unit installed at one side of the work area and generating carbon dioxide;
A carbon dioxide spraying part connected to the carbon dioxide generating part and spraying carbon dioxide in a soot formed on the base material; And
And a transfer unit for transferring the carbon dioxide injection unit to a position corresponding to the soot,
The carbon dioxide injection unit
A spray nozzle installed at one side of the transfer unit and having a spray hole connected to the carbon dioxide generator at one side thereof for spraying carbon dioxide through the spray hole; And
Wherein the injection nozzle is provided at one side of the transfer unit so that the injection nozzle is disposed at one side of the injection nozzle, and a discharge hole is formed at one side of the transfer nozzle. When the injection nozzle injects carbon dioxide into the soot, the lower end is supported on one side of the base material, And an airtight cap for blocking the outside from the outside.
The method according to claim 1,
Wherein the carbon dioxide generating unit generates dry ice.
delete The method according to claim 1,
The sealing cap
A hermetically sealed body provided on one side of the transfer unit so as to be movable in a vertical direction and having the discharge nozzle disposed therein in a state in which the lower portion thereof is open,
A soft sealing member provided at a lower end of the hermetically sealed body; And
And a cushioning member interposed between the hermetically sealed body and the transfer unit for providing an elastic force downward to the hermetically sealed body.
The method according to claim 1,
An opening / closing member which is installed at one side of the closed cap corresponding to the discharge hole so as to be movable in the inside and outside direction of the closed cap and opens / closes the discharge hole; And
And an elastic member interposed between the opening and closing member and the sealing cap to provide an elastic force to the opening and closing member in an inner direction of the sealing cap.
KR20140056887A 2014-05-13 2014-05-13 Carbon dioxide injection system for removal of soot KR101487159B1 (en)

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KR20140056887A KR101487159B1 (en) 2014-05-13 2014-05-13 Carbon dioxide injection system for removal of soot

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100846658B1 (en) * 2007-05-09 2008-07-16 한국기계연구원 Laser welding zig for joinning thin plate and micro parts
KR101094262B1 (en) * 2009-05-22 2011-12-19 주식회사 이오테크닉스 Laser manufacturing apparatus and method for EMC

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100846658B1 (en) * 2007-05-09 2008-07-16 한국기계연구원 Laser welding zig for joinning thin plate and micro parts
KR101094262B1 (en) * 2009-05-22 2011-12-19 주식회사 이오테크닉스 Laser manufacturing apparatus and method for EMC

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