KR100882136B1 - Continuous printing machine for steel plate - Google Patents

Continuous printing machine for steel plate Download PDF

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Publication number
KR100882136B1
KR100882136B1 KR1020080053182A KR20080053182A KR100882136B1 KR 100882136 B1 KR100882136 B1 KR 100882136B1 KR 1020080053182 A KR1020080053182 A KR 1020080053182A KR 20080053182 A KR20080053182 A KR 20080053182A KR 100882136 B1 KR100882136 B1 KR 100882136B1
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KR
South Korea
Prior art keywords
roll
printing
pattern
steel sheet
offset
Prior art date
Application number
KR1020080053182A
Other languages
Korean (ko)
Inventor
김상식
Original Assignee
주식회사 파코엔지니어링
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 파코엔지니어링 filed Critical 주식회사 파코엔지니어링
Priority to KR1020080053182A priority Critical patent/KR100882136B1/en
Application granted granted Critical
Publication of KR100882136B1 publication Critical patent/KR100882136B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F1/00Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/10Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed for multi-impression printing in one or more colours, e.g. on webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F1/00Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/18Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed for lithography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F1/00Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/26Details
    • B41F1/40Inking units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F5/00Rotary letterpress machines
    • B41F5/04Rotary letterpress machines for printing on webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F7/00Rotary lithographic machines
    • B41F7/02Rotary lithographic machines for offset printing
    • B41F7/04Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs

Abstract

The present invention relates to a continuous printing machine for steel sheets for printing a predetermined pattern on steel sheets having various widths continuously fed. The configuration includes a fixed rail 62 which is provided for each of the printing parts 2 and 4 on the base frame 10 so as to extend in a direction perpendicular to the moving direction of the steel sheet P; A moving rail (64) installed for each of the fixed rails (62) to be movable along the extension direction of the fixed rail (62); A print head portion 2 'composed of a printing portion other than a backup roll 16 and a roll driving portion 22 is provided on the movable rail 64 via a support frame 66, thereby providing the print head portion 2 ') Can be drawn out of the area passing the steel plate (P) along the extending direction of the fixed rail (62).

Description

Continuous printing machine for steel plate

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing press, and more particularly, to a continuous printing machine for a steel sheet for printing a predetermined pattern on a steel sheet having various widths fed continuously.

Continuous printing machine for steel sheet refers to a mechanical equipment that applies printing in a predetermined color to its surface while supplying and unwinding the steel sheet wound in roll form. Continuous printing machines usually print 2 degrees of color, except for undercoat and surface coating. Printed steel sheets are widely used in interior and exterior materials for building installations from indoor home appliances such as refrigerators and air conditioners.

The biggest advantage of a continuous press is its fast printing speed. The steel sheet as a printing target has a limit in expressing various colors by using color mixing since the steel sheet does not have the ability of absorbing ink. In addition, in continuous printing of steel sheets, offset printing using an offset roll made of rubber material is widely used because the surface hardness of the steel sheet is high. The gravure-offset printing method adopts the offset printing method for gravure printing using the intaglio technique.

The present invention relates to an improvement of a printing press employing such a gravure-offset printing scheme. A schematic configuration of a conventional continuous printing machine of this kind is shown in FIG. 1 and the description thereof is as follows.

The printing press has two printing parts 100 and 102 for printing two degrees. Each of the printing units 100 and 102 is mostly the same configuration except that only patterns of pattern rolls are different. As a representative, one printing unit 100 will be described. The printing unit 100 includes the pattern roll 104, the offset roll 106, the backup roll 108, and the cleaning roll 110 as main components. The steel sheet P passes through the printing unit 100 while floating in the air. A pattern is formed on the pattern roll 105 at an intaglio, and ink is supplied from an ink supply unit (not shown). Ink on the surface of the pattern roll 104 is transferred to the offset roll 106, which is applied to the steel sheet P. The backup roll 108 is for reaction against the force applied by the offset roll 106 to the steel sheet, and the cleaning roll 110 removes residual ink on the surface of the offset roll 106 with the help of a solvent such as thinner. Done.

The conventional pattern roll 104, the offset roll 106 and the washing roll 110 are interlocked by one driving device to be rotated or stopped together. The backup roll 108 installed to be capable of raising and lowering is idle.

As described above, since the conventional continuous printing machine drives each roller constituting the printing unit by one driving device, the entire printing machine must be stopped to maintain or repair one of the printing units 100. In addition, replacing only one roller requires stopping the entire device and dismantling many parts.

In addition, since the width of the roller is set to a specific value, there is a problem that rollers of various widths cannot be used. When continuous printing is to be performed on steel sheets having different widths, there is an inconvenient problem in that all heads (frames supporting each roll) of the printing unit supporting each roller must be replaced.

An object of the present invention for the above problems is to provide a configuration that allows the use of a variety of roller width in the continuous printing machine for steel sheet. Furthermore, it is an object of the present invention to provide a continuous printing machine for steel sheet which allows the rollers constituting the printing section to be driven separately so that the printing speed can be precisely controlled for each printing section.

Furthermore, it is an object of the present invention to provide a continuous printing machine for steel sheet in a form that is improved in detail for shortening of working time and ease of operation.

The above object, the base frame is fixed to the ground; A first printing unit for printing the first pattern on the surface of the steel sheet continuously supplied; It is arranged side by side with the first printing portion, and includes a second printing portion for printing a second pattern on the surface of the steel sheet on which the first pattern is printed,

Each of the first and second printing parts may include a pattern roll having a pattern formed in an intaglio; An offset roll which rotates in contact with the pattern roll so as to receive the ink attached to the pattern roll surface and is rotated in contact with the supplied steel sheet to rotate the pattern on the surface of the steel sheet; A backup roll idling in the state in contact with the offset roll with the steel plate interposed therebetween; An ink supply unit for supplying ink to the pattern roll; A washing roll rotated in contact with the offset roll; Solvent supply unit for supplying a cleaning solvent, such as thinner to the cleaning roll to remove the remaining ink on the surface of the offset roll; In the continuous printing machine for steel sheet including a roll driving unit for driving the pattern roll, the offset roll and the backup roll;

A fixed rail provided for each of the printing parts on the base frame so as to extend in a direction perpendicular to the moving direction of the steel sheet; A moving rail installed for each of the fixed rails to be movable along an extension direction of the fixed rail;

A print head portion constituted by a print portion excluding the backup roll is installed on the moving rail, so that the print head portion can be drawn out of an area through which the steel sheet passes along an extension direction of the fixed rail. Achieved by a printing press.

Another feature of the present invention, the roll drive is to drive the pattern roll, the offset roll and the washing roll separately by using three drive motors to rotate individually.

Another feature of the present invention, the support frame can be moved along the fixed rail in a spaced state, by adjusting the separation interval by the gap adjusting means, the width of the pattern roll, offset roll and washing roll Make it adjustable.

Still another feature of the present invention is the same configuration as the first and second printing units, which are provided in succession to the first and second printing units, comprising: a third printing unit for printing a third pattern; Further comprising a fourth printing unit for printing the fourth pattern.

According to the above structure, the width adjustment of a roller can be made easy in the continuous printing machine for steel plates. Furthermore, there is provided a continuous printing machine for steel sheet which allows the rollers constituting the printing section to be driven separately so that the printing speed can be precisely controlled for each printing section. Furthermore, even if the width of the steel sheet is different, it is possible to adjust the distance of the roll supporting block for supporting each roller of the printing unit, thereby providing a continuous printing machine for steel sheet which makes it possible to universally use steel sheets having various widths using one printing head. do. Further, there is provided a continuous printing machine for steel sheet of a detailed improvement form for shortening the working time and ease of operation.

Hereinafter, with reference to the accompanying drawings in the detailed description of the present invention will be described in more detail.

2 is a side configuration diagram of a continuous printing machine for a steel sheet according to an embodiment of the present invention, Figure 3 is a side configuration diagram for one of the printing portion. 4 is a plan configuration diagram of a continuous printing machine for a steel sheet according to an embodiment of the present invention, Figure 5 is a plan configuration diagram of one of the printing portion.

6 is a side configuration diagram for explaining an operating state of one printing unit of the continuous printing machine for sheet steel according to an embodiment of the present invention, Figure 7 is a plan configuration diagram for explaining the operating state.

The printing machine is composed of several printing parts 2, 4, 6, 8 arranged in a straight line. Each printing unit 2, 4, 6, 8 is mounted on a base frame 10 fixed to the ground. As shown, four printing portions 2, 4, 6, and 8 are provided for printing a predetermined pattern on the surface of the steel sheet which is continuously supplied. The first, second, third, and fourth printing units 2, 4, 6, and 8 may print the first, second, third, and fourth patterns, respectively. This makes it possible to print a pattern of up to 4 degrees. However, when printing of 2 to 3 degrees is requested as usual, one or two idle printing parts are produced.

Illustrating the driving method by such a configuration is as follows. The third and fourth printing units 6 and 8 can replace or repair the rollers while the first and second printing units 2 and 4 are operated to perform second degree printing. Alternatively, the rollers of the first printing unit 2 may be replaced or repaired while the third, fourth, and fourth printing units 4, 6, and 8 are driven to perform 3 degree printing. That is, it is possible to continue driving the printer even during the time of replacing or repairing the roller. This provides the effect of maximizing the work efficiency.

The configuration of the printing sections 2, 4, 6, 8 on the working surface is not much different from the conventional one. The first, second, third and fourth printing parts 2, 4, 6 and 8 all work with the same configuration. Therefore, the following description of the printing unit will be briefly described on behalf of only one first printing unit (2).

The printing unit 2 includes a pattern roll 12 in which a pattern is engraved; An offset roll 14 which transfers the pattern onto the surface of the steel sheet P by being rotated in contact with the supplied steel sheet P while receiving the ink attached to the surface of the pattern roll 12; A backup roll 16 idling in contact with the offset roll 14 with the steel plate P therebetween; An ink supply unit (not shown) for supplying ink to the pattern roll 12; Washing roll 18 is rotated in contact with the offset roll (14); Solvent supply unit 20 for supplying a cleaning solvent, such as thinner to the cleaning roll 18 to remove the remaining ink on the surface of the offset roll (14); And a roll driver 22 for driving the pattern roll 12, the offset roll 14, and the cleaning roll 18.

The offset roll 14 is fixed at one vertex on the side view of FIG. 3. The pattern roll 12 and the washing roll 18 are each capable of maneuvering in the direction of the arrow so as to contact or be spaced apart from the offset roll 14. The pattern roll 12 and the washing roll 18 are installed at positions opposite to each other based on the offset roll 14. The steel sheet P is drawn in from the direction in which the pattern roll 12 is installed and is drawn out in the direction in which the washing roll 18 is installed. The backup roll 16 is supposed to start up and down.

The pattern roll actuating unit 26, the washing roll actuating unit 28, and the backup roll actuating unit 30 are respectively provided with a pattern roll actuating cylinder 32, a washing roll actuating gear 34, and a backup roll actuating cylinder 36, respectively. The load cell 24 is installed in the backup roll operation cylinder 36 to measure or set the pressure applied to the steel sheet P.

In addition, the pattern roll adjusting handle 40, the washing roll adjusting handle 42, and the backup roll adjusting handle 44, which are manually operated, finely pattern the pattern roll 12, the washing roll 18, and the backup roll 16, respectively. It is installed for adjustment.

The ink supply unit (not shown) flows ink from the upper position of the pattern roll 12, and the remaining ink is scraped with a pattern roll doctor blade 46 so that the ink is filled only in the pattern grooves engraved on the surface of the pattern roll 12. To me.

The solvent supply unit 20 applies the solvent to the surface of the offset roll 14 immediately after the washing roll 18 is buried with the solvent from the solvent tray 50 and printed. The solvent containing the residual ink is scraped off with the washing roll doctor blade 52.

According to the main feature of the present invention, the roll drive unit 22 drives the offset roll 14 and the cleaning roll 18 separately by using three drive motors 54 that rotate individually. To this end, the driving unit casing 56 is fixedly installed on the side of the base frame 10, and three driving motors 54 are individually installed in the driving unit casing 56. As the drive motor 54, a servomotor capable of fine adjustment of the rotation speed is used. The drive shaft 58 extends from the output end of each drive motor 54 and is connected to the roll shafts 60 respectively supported by the bearings.

EMBODIMENT OF THE INVENTION Hereinafter, the biggest characteristic of this invention is demonstrated. First, the term printhead portion 2 'will be defined. Hereinafter, the print head unit refers to the entire printing unit except the backup roll 16 and the roll driving unit 22.

A fixing rail 62 is provided for each of the printing parts 2, 4, 6, and 8 on the base frame 10 so as to extend in a direction perpendicular to the moving direction of the steel sheet P. The moving rail 64 is provided for every fixed rail 62 so that a movement along the extension direction of the fixed rail 62 is possible. The print head portion 2 'is movable on the fixed rail 62 by being mounted on the movable rail 64. As shown in FIG. Therefore, the print head portion 2 'can be completely drawn out of the region through which the steel sheet P passes along the extending direction of the fixed rail 62 (see Fig. 4). 4 shows a state in which the second and third printing parts 4 and 6 are separated from the printable point.

In addition, the support frame 66 is installed to be able to adjust the interval between each other by the gap adjusting means. The state in which the spacing between the supporting frames 66 is adjusted is shown in FIG. 7. By manually manipulating the handle (not shown), the support frame 66 may be opened or narrowed relative to the center point, thereby making it possible to adjust the distance between the support frames 66. The roll shaft 60 for supporting each roller should just be a spline shaft so that length deformation can be carried out.

The moving rail 64 is installed on the bottom of the support frame 66.

The spacing between the supporting frames 66 becomes the width of the pattern roll 12, the offset roll 14, and the like. According to the present invention, the support frame 66 may be flowed along the fixed rail 62 in a regularly spaced state. According to the main feature of the present invention by adjusting the interval between the supporting frame 66, it is possible to replace the pattern roll 12, the offset roll 14 and the like of different widths. This makes it possible to perform a desired printing operation by simply replacing only the rollers 12, 14 and 18 when the width of the steel sheet P to be printed is different.

When the print head 2 'is to be detached from the transfer line of the steel sheet, the print head 2' may be released from interlock with the roll driving unit 22. However, according to another embodiment of the present invention, by connecting the drive shaft to the spline so as to extend in the longitudinal direction, the print head portion 2 'can be started while maintaining the interlocking state with the roll driving portion.

For reference, in FIG. 2, a trolley 68 is installed at the bottom of the base frame 10 so that the disassembled backup roll 16 ′ can be taken out of the base frame.

Frame fixing means for fixing the position of the support frame 66 is provided. The frame fixing means may be a locking cylinder 70 or a locking handle installed at both sides of the support frame.

As shown in each drawing, four printing units may be installed, but five or three may be installed. The present invention is characterized by the fact that it can be easily replaced and repaired by removing the print head part from the transfer line of the steel sheet, and that various roll widths can be used and each roll is driven individually, so that the number of printed parts can be reduced to four. It does not need to be specified.

The upper part of the printing machine is provided with a drying unit 72 in the form of a duct. Dry air is supplied to the surface of the steel plate P which passed each printing part from the duct. This is no different from the drying unit in the conventional printing press, and further description thereof is omitted.

 Residual ink supplied to the pattern roll 12 and remaining flowing down is stored in the ink storage container 76 by the carrying out tray 74 installed under the base frame.

Each doctor blade 46, 52 is selectively contacted with the surface of the pattern roll 12 and the offset roll 14 by the doctor blade cylinder (78,79). A state in which rotation is operated about the hinge shafts 46a and 52a of the doctor blade cylinders 78 and 79 is shown by a dashed-dotted line in FIG.

The pattern roll 12 is covered by the cover body 80 which lifts the cover body 80 about the hinge axis 12a. The pattern roll 12 may be replaced or repaired after the cover is lifted up. The cover body 80 can be lifted up by the cover body cylinder 82 as indicated by a dashed line (see FIG. 6).

1 is a schematic configuration diagram of a conventional continuous printing machine for steel sheet.

2 is a side configuration diagram of a continuous printing machine for a steel sheet according to an embodiment of the present invention, Figure 3 is a side configuration diagram for one of the printing portion. 4 is a planar configuration diagram of a continuous printing machine for a steel sheet according to an embodiment of the present invention, Figure 5 is a planar configuration diagram for one of the printing portion.

6 is a side configuration diagram for explaining the operating state of one of the printing unit of the continuous printing machine for sheet steel according to an embodiment of the present invention, Figure 7 is a plan view for explaining the operating state.

Explanation of symbols on the main parts of the drawings

2,4,6,8; 1st, 2, 3, 4 printing part 10; Baseframe

12; Pattern roll 14; Offset roll

16; Backup roll 18; Washing roll

20; Solvent supply unit 22; Roll drive part

54; Drive motor 62; Fixed rail

64; Moving rail 66; Support frame

70; Locking cylinder P; Grater

Claims (4)

  1. delete
  2. delete
  3. A base frame 10 fixed to the ground; A first printing part 2 for printing the first pattern on the surface of the steel sheet P which is continuously supplied; A second printing portion 4 arranged to be parallel to the first printing portion, for printing a second pattern on the surface of the steel sheet P on which the first pattern is printed;
    Each of the first and second printing units 2 and 4 may include: a pattern roll 12 having a pattern formed in an intaglio; Offset rolls which rotate in contact with the pattern roll 12 so as to transfer the ink on the surface of the pattern roll 12 and rotate in contact with the supplied steel sheet P so as to transfer the pattern onto the surface of the steel sheet P. (14, offset roll); A backup roll 16 idling in contact with the offset roll 14 with the steel plate interposed therebetween; An ink supply unit for supplying ink to the pattern roll 12; Washing roll 18 is rotated in contact with the offset roll (14); Solvent supply unit 20 for supplying a cleaning solvent, such as thinner to the cleaning roll to remove the residual ink on the surface of the offset roll; In the continuous printing machine for sheet steel including a roll driving unit 22 for driving the pattern roll 12, the offset roll 14 and the backup roll (16);
    A fixed rail 62 installed on each of the printing units 2 and 4 on the base frame 10 so as to extend in a direction perpendicular to the moving direction of the steel sheet P; A moving rail (64) provided for each of the fixed rails (62) so as to be movable along the extension direction of the fixed rail (62);
    The print head portion 2 ', which is composed of a printing portion other than the backup roll 16 and the roll driving portion 22, is installed on the movable rail 64 via the support frame 66, thereby providing the print head portion ( 2 ') can be drawn out of the area through which the steel sheet P passes along the extending direction of the fixed rail 62;
    The roll driving unit 22 drives the pattern roll 12, the offset roll 14, and the washing roll 18 separately by using three driving motors 54 which are rotated separately;
    The support frame 66 may move along the fixed rail 62 in a spaced apart state, and by adjusting the spaced interval by the gap adjusting means, the pattern roll 12, the offset roll 14 and washing Continuous printing machine for a steel sheet, characterized in that to be able to adjust the width of the roll 18 to print a steel sheet of various widths.
  4. delete
KR1020080053182A 2008-06-05 2008-06-05 Continuous printing machine for steel plate KR100882136B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101001667B1 (en) 2010-09-07 2010-12-15 우진기계 주식회사 Doctor blade control device for steel plate printing machine
CN103324066A (en) * 2013-06-09 2013-09-25 珠海天威飞马打印耗材有限公司 Laser imaging method on special medium
KR101387638B1 (en) * 2012-10-22 2014-04-23 포스코강판 주식회사 Method for manufacturing colored steel sheet plate
CN101745815B (en) * 2010-01-27 2014-09-03 葛爱民 Continuous printing production line of steel plate
KR101816237B1 (en) * 2017-07-20 2018-01-08 임순심 Both-side gravure printing apparatus having adjustable process
KR20190085707A (en) 2018-01-11 2019-07-19 주식회사 파코엔지니어링 continuous printing machine for steel plate
KR101985534B1 (en) 2017-12-29 2019-09-03 주식회사 파코엔지니어링 continuous printing machine for steel plate
KR20200082488A (en) 2018-12-28 2020-07-08 주식회사 파코엔지니어링 continuous printing machine for steel plate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5989358A (en) * 1996-09-26 1999-11-23 Systems Division, Incorporated Sheet cleaning apparatus with cartridge roller assembly and method of use
KR20040032611A (en) * 2002-10-10 2004-04-17 김을중 A printing device and manufacturing process of printing for plastic goods
JP2004255606A (en) 2003-02-24 2004-09-16 Tokyo Printing & Equipment Trading Co Ltd Impression cylinder jacket cleaning device of sheet offset perfecting printing machine
KR20050084123A (en) * 2002-12-02 2005-08-26 엠피에스 홀딩 비.브이. Printing module, and printing machine provided with such printing module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5989358A (en) * 1996-09-26 1999-11-23 Systems Division, Incorporated Sheet cleaning apparatus with cartridge roller assembly and method of use
KR20040032611A (en) * 2002-10-10 2004-04-17 김을중 A printing device and manufacturing process of printing for plastic goods
KR20050084123A (en) * 2002-12-02 2005-08-26 엠피에스 홀딩 비.브이. Printing module, and printing machine provided with such printing module
JP2004255606A (en) 2003-02-24 2004-09-16 Tokyo Printing & Equipment Trading Co Ltd Impression cylinder jacket cleaning device of sheet offset perfecting printing machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101745815B (en) * 2010-01-27 2014-09-03 葛爱民 Continuous printing production line of steel plate
KR101001667B1 (en) 2010-09-07 2010-12-15 우진기계 주식회사 Doctor blade control device for steel plate printing machine
KR101387638B1 (en) * 2012-10-22 2014-04-23 포스코강판 주식회사 Method for manufacturing colored steel sheet plate
CN103324066A (en) * 2013-06-09 2013-09-25 珠海天威飞马打印耗材有限公司 Laser imaging method on special medium
KR101816237B1 (en) * 2017-07-20 2018-01-08 임순심 Both-side gravure printing apparatus having adjustable process
KR101985534B1 (en) 2017-12-29 2019-09-03 주식회사 파코엔지니어링 continuous printing machine for steel plate
KR20190085707A (en) 2018-01-11 2019-07-19 주식회사 파코엔지니어링 continuous printing machine for steel plate
KR20200082488A (en) 2018-12-28 2020-07-08 주식회사 파코엔지니어링 continuous printing machine for steel plate
KR102155372B1 (en) * 2018-12-28 2020-09-11 주식회사 파코엔지니어링 continuous printing machine for steel plate

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