KR101892364B1 - Apparatus for removing dendrite of electro galvanic plate - Google Patents

Abstract

The present invention relates to an apparatus for removing foreign matter on an electroplated steel sheet, comprising: an LM guide unit provided at an upper portion of a support block for guiding movement; a moving unit which is respectively moved along the LM guide unit through a driving unit; A strip supporting portion provided on each inner side of the moving portion so as to be able to feed the strip, and a strip supporting portion provided on each of the moving portions so as to support the strip, the strip supporting portion being provided in the moving portion so as to be close to at least an edge portion of the strip, And a control unit for controlling the driving unit, the strip supporting unit and the foreign substance removing unit to transfer the strip and remove the foreign substance, thereby preventing the foreign matter from entering the strip and preventing the occurrence of dents, thereby improving the productivity .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for removing foreign substances from an electroplated steel sheet,

The present invention relates to an apparatus for removing foreign matter on an electroplated steel sheet which can prevent foreign matter from being dented into a strip by removing foreign substances generated in the electroplating process of the steel sheet, thereby improving productivity .

As is well known, electroplating is performed by applying a '-' current to a solid anode in a plating bath and by applying a '+' current to the strip, the solid anode is electrolyzed and attached to the surface of the strip A horizontal cell type, a vertical cell type, a carousel cell type, or the like.

Here, the horizontal cell type electroplating process in which the steel plate is electroplated while moving the steel plate between the horizontally installed plating cells, or the vertical cell type electroplating process in which the steel plate is electroplated into the plating cell to which the plating solution is supplied, In the plating process, since the edge mask device for preventing over-stripping of the strip edge portion is provided, the build-up phenomenon does not occur in the strip edge portion, so that the over-grinding device is not necessary. Here, the build-up phenomenon means that both ends of the product are thickened at the time of winding due to an overturning of the anode at both sides of the strip.

On the other hand, in the carrozel cell type electroplating process in which the conductor roll 2 is provided in the plating cell and the electroplating is carried out, current is concentrated on both sides of the strip 1. Therefore, as shown in FIG. 1, Zinc dendrite or the like is produced as a foreign substance which is accumulated in the edge portion of the substrate 1 and grows in a tree shape due to the precipitation of zinc as the local resistance increases Such zinc dendrites are easily broken due to incomplete fusion as the length and shape of the dendrites become larger as the plating amount increases, so that the zinc dendrites can be immersed in the strip 1 in progress.

2 (a) and 2 (b), a mark (inside the circle display) in which the zinc dendrite dropout is mixed is generated in the strip 1, and in the step (c) There is a problem that a pressed dent (inside of a circle display) is generated to cause defective product.

1. Korean Patent Laid-Open No. 10-2014-0139650 (Published Dec. 20, 2014) 2. Korean Registered Patent No. 10-0762489 (registered on September 20, 2007)

Industrial Applicability The present invention can prevent the occurrence of dents due to foreign substances entering the strip by removing the foreign substances (for example, dendrite and the like) generated in the electroplating process of the steel sheet, And an object of the present invention is to provide an apparatus for removing foreign substances on an electroplated steel sheet.

According to the present invention, on the LM guide, the movable frame is moved forward and backward through the air cylinder, the strip is always maintained at a constant position through the upper pinch roll and the lower pinch roll, and the guide roller and the torch block are contacted The present invention provides an apparatus for removing foreign matter on an electroplated steel sheet which can remove incompletely coated zinc dendrite on a strip edge portion and can reduce maintenance cost due to simple construction of equipment and trouble.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an embodiment of the present invention, there is provided an image forming apparatus including: an LM guide unit provided at an upper portion of a support block for guiding movement; a moving unit that is moved along the LM guide unit through a driving unit; A strip supporting portion provided on each inner side of the moving portion to support the strip; a foreign matter removing portion provided in the moving portion so as to be close to at least an edge portion of the strip and contacting the edge portion to remove foreign matter; And a control unit for controlling the driving unit, the strip supporting unit, and the foreign substance removing unit to remove the foreign substance.

According to an embodiment of the present invention, the apparatus for removing foreign materials on the electroplated steel sheet further comprises a sensor unit for sensing a distance between the strip supporting unit and the surface of the strip to be transferred, .

According to an embodiment of the present invention, the LM guide unit includes a plurality of LM guide rails provided on the support block and coupled in a direction in which the moving unit is moved, .

According to an embodiment of the present invention, the LM guide unit may further include a distance sensor for sensing a distance between the moving unit and both ends of the LM guide unit.

According to an embodiment of the present invention, the moving unit includes: a moving plate provided on both sides of the upper portion of the LM guide unit, the moving plate being positioned above the LM guide unit; A plurality of engaging frames coupled to a lower portion of the moving plate, and a moving block coupled to the lower portion of the moving plate to move the device constituting portions.

According to an embodiment of the present invention, the movable block includes a fixing groove formed on an outer surface thereof to which the driving unit is coupled and fixed, and a strip conveying groove on which the strip is conveyed, A device may be provided.

According to an embodiment of the present invention, the driving unit includes: a cylinder fixing block provided on both sides of the LM guide unit and coupled to the moving unit, the cylinder fixing block being provided outside both ends of the supporting block; A cylinder rod which is fixed to the inside of the air cylinder and which is movably coupled to the inside of the air cylinder in a pneumatic manner; and a foreign matter of the electroplated steel sheet which is provided at a projecting end of the cylinder rod and is engaged with the moving portion Removal device may be provided.

According to an embodiment of the present invention, the strip supporting portion includes: an upper engaging block provided on both sides of the moving portion and coupled to an upper portion of a strip conveying groove to which the strip is fed, in a front direction; An upper bracket rotatably provided on the upper bracket; and an upper bracket rotatably provided on the upper bracket. The upper bracket rotatably supports the upper bracket, A lower air cylinder having a lower cylinder block which is vertically movable in a pneumatic manner while being fixed through the lower cylinder block and a lower air cylinder coupled to an upper end of the lower cylinder rod, A lower bracket fixed to the lower bracket, A foreign matter removing apparatus of the electroplated steel sheet comprising a pinch roll unit can be provided.

In addition, according to the embodiment of the present invention, the strip removing portion may include a torch portion having a top plate and a bottom plate provided on both sides of the moving portion and coupled to a rear inner side portion of a strip feed groove to which the strip is fed, A guide roller rotatably coupled to a cam shaft provided between the upper plate and the lower plate, and a guide roller provided at an inner end of the torch coupling block adjacent to the guide roller, And a torch block provided to protrude from the outer circumferential surface of the torch block.

According to an embodiment of the present invention, the sensor unit includes a sensor bracket provided at both sides of the moving unit and fixed to the rear upper surface of the strip conveying groove to be protruded in the rear direction, And a proximity sensor provided at the end portion and sensing a distance between the strip and the transported strip.

The present invention can improve the productivity by eliminating foreign substances generated in the electroplating process of the steel sheet, preventing foreign matter from entering into the strip and preventing occurrence of dents.

According to the present invention, on the LM guide, the movable frame is moved forward and backward through the air cylinder, the strip is always maintained at a constant position through the upper pinch roll and the lower pinch roll, and the guide roller and the torch block are contacted The incompletely plated zinc dendrite can be removed from the strip edge portion, and the equipment configuration is simple, and troubles are not generated, thereby reducing the maintenance cost.

FIGS. 1 and 2 are views for explaining problems occurring in a conventional electroplating process, and FIG.
3 to 6 are views illustrating an apparatus for removing foreign matter on an electroplated steel sheet according to an embodiment of the present invention,
FIG. 7 is a view illustrating a pneumatic circuit applied to an apparatus for removing foreign materials on an electroplated steel sheet according to an embodiment of the present invention.

Advantages and features of embodiments of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

FIGS. 3 to 6 are views showing an apparatus for removing foreign matter on an electroplated steel sheet according to an embodiment of the present invention. FIG. 7 is a view showing a pneumatic circuit applied to an apparatus for removing foreign substances on an electroplated steel sheet according to an embodiment of the present invention. Fig.

3 to 6, an apparatus for removing foreign materials on an electroplated steel sheet according to an embodiment of the present invention includes an LM guide unit 100, a moving unit 200, a driving unit 300, a strip supporting unit 400, A rejection unit 500, a sensor unit 600, a control unit (not shown), and the like.

The LM guide unit 100 includes a support block 110, an LM guide rail 120, and the like, provided at an upper portion of a support block 110 for supporting the apparatus at a predetermined height.

Here, the support block 110 may be provided as a structure having a predetermined height in a state of being fixed to the bottom surface on which the device is installed while supporting the device at a predetermined height. Inside the support block 110, The outer plate may be provided.

Such an inner support structure can support a plurality of units such as a vertical frame of H beam type, a horizontal frame of H beam type, and a diagonal frame of H beam type, for example, so as to firmly and stably support the apparatus. For example, a step corresponding to the shape of the lower end of the moving unit 200 to be coupled, for example, a lower width of which the lower end of the moving unit 200 is coupled and a lower width is narrowed.

Accordingly, the entire shape of the support block 110 can be provided, for example, in such a manner that the support block 110 is coupled to the upper portion of the frame.

The plurality of LM guide rails 120 are provided on the upper portion of the support block 110 and may be bolted to the upper portion of the support block 110 in two rows in a direction in which the movable portion 200 is moved. The plurality of LM guide rails 120 may be provided on both sides corresponding to the one moving part and the other moving part.

The moving unit 200 is disposed on both sides of the LM guide unit 110 and is moved along the LM guide unit 100. The moving unit 200 includes a moving plate 210, A moving block 230, and the like. In this case, the inner side surface refers to a surface where one side moving part and the other side moving part face each other, the outer side surface refers to the outward direction of the one moving part and the outward direction of the other moving part, And the back surface means the surface in the direction in which the strip is discharged.

The moving plate 210 is disposed in the form of a plate at the upper portion of the LM guide unit 110 and is provided at a lower portion of the moving plate 210 at a position corresponding to the position of the LM guide rail 120, A plurality of engaging frames 220 are bolted to the moving plate 210 such that the engaging frames 220 are movably coupled to the moving plate 210 and the device components (e.g., the driving unit 300, the strip supporting unit 400, 500, a sensor unit 600, and the like) may be coupled to the moving block 230.

The movable block 230 has a fixing groove 231 to which the driving unit 300 is fixedly coupled to the outer side of the moving block 230 and a fixed coupling 232 And a strip feeding groove 233 through which the strip is fed to the inner side may be formed in a 'C' shape.

The driving unit 300 is connected to the moving unit 200 on both sides (one side and the other side) of the LM guide unit 110 and moves the moving unit 200 along the LM guide unit 100, A fixed block 310, an air cylinder 320, a cylinder rod 330, a coupling link 340, and the like.

The cylinder fixing block 310 is provided at both ends of the support block 110 provided in the LM guide part 100 and the air cylinder 320 is fixed to the cylinder fixing block 310 with the fixing part 311 And the cylinder rod 330 is movably coupled to the inside of the air cylinder 320 in a pneumatic manner and the coupling link 340 is formed in a U shape at the projecting end of the cylinder rod 330 And can be coupled and fixed to the moving block 230 of the moving part 200 through a fixing pin 341. [

That is, the driving unit 300 is fixed to the LM guide unit 100 through the cylinder fixing block 310, and the cylinder rod 330, which moves in the air cylinder 320 in a pneumatic manner, The movable portion 200 is smoothly moved along the LM guide portion 100 in accordance with the pneumatic movement (i.e., insertion or protrusion) of the movable block 230, Can move.

The strip supporting part 400 is provided inside each of the moving parts 200 to support the strip so that the strip can be fed along the strip feeding grooves 233 on both sides of the moving part 200, The upper air cylinder 420, the upper bracket 430, the upper pinch roll 440, the lower engaging block 450, the lower air cylinder 460, the lower bracket 470, the lower pinch roll 480, And the like.

The upper coupling block 410 may be coupled to the upper part of the strip feed groove 233 formed in the feed block 230 of the moving part 200 through the coupling bolt in the front direction of the feed block 230, The upper air cylinder 420 may be provided with an upper cylinder rod (not shown) that is vertically movable in a pneumatic manner while being fixed through the upper coupling block 410. The upper bracket 430 may include a lower cylinder rod And the upper pinch roll 440 may be rotatably mounted on the upper bracket 430 with reference to the upper shaft.

The lower coupling block 450 can be coupled to the lower portion of the strip conveying groove 233 formed in the conveying block 230 of the moving part 200 through the coupling bolt in the front direction of the conveying block 230, The air cylinder 460 may be provided with a lower cylinder rod (not shown) that is vertically movable in a pneumatic manner while being fixed through the lower coupling block 450. The lower bracket 470 may be provided on the upper end of the lower cylinder rod And the lower pinch roll 480 may be rotatably mounted on the lower bracket 470 with respect to the lower shaft.

The strip passes between the upper pinch roll 440 and the lower pinch roll 480 from the front side of the moving block 230 through the strip conveying portion 400 as described above and is discharged in the rear direction of the moving block 230 And the gap between the upper pinch roll 440 and the lower pinch roll 480 is appropriately adjusted corresponding to the thickness of the strip through the upper air cylinder 420 and the lower air cylinder 460 moving up and down in a pneumatic manner , The strip can be stably transported.

The foreign material removing unit 500 is disposed on the moving part 200 so as to be close to at least the edge part of the strip and contacts the strip edge part to remove the foreign substance. The foreign material removing part 500 includes a torch coupling block 510, a guide roller 520, (530), and the like.

Here, the torch coupling block 510 may include a top plate and a bottom plate protruding in the backward direction while being coupled to a rear inner side of a strip transfer groove 233 formed in the moving block 230 of the moving part 200 , The guide roller 520 may be rotatably coupled to a cam shaft 511 provided between the upper plate and the lower plate of the torch coupling block 510 to guide the edge of the strip.

The guide roller 520 may be provided at an inner rear end of the torch coupling block 510 in the direction of the strip feed groove 233 and may include a bearing 521, a snap ring 522, The guide roller 520 can be rotated about the camshaft 511 as shown in FIG.

The torch block 530 may be provided at the inner end of the torch coupling block 510 adjacent to the guide roller 520 so as to protrude from the inner side of the strip feed groove 233. The torch block 530 contacts the surface of the edge of the strip to penetrate the torch block 530 vertically through the fixing bolt 531 and the fixing nut 532 so as to remove the foreign substance, As shown in FIG.

The sensor unit 600 senses the distance between the strip supporting unit 400 and the surface of the strip to be transported, and may include a sensor bracket 610, a proximity sensor 620, and the like.

Here, the sensor bracket 610 is formed to be protruded in the backward direction through the fixing bolts 611 in the 'R' shape at the upper part of the rear surface of the strip conveying groove 233 formed in the moving block 230 of the moving part 200 And the proximity sensor 620 may be provided at the protruding end of the sensor bracket 610 to sense the distance from the strip to be transported.

Although not shown in the drawings, the control unit may be variously applied according to the configuration and arrangement of the apparatus. The control unit may include a plurality of unit parts (for example, a driving part 300, a strip supporting part 400, a foreign matter removing part 500 ), The sensor unit 600, and the like) to control the electroplated steel strip to enter the strip conveyance groove 233 of the strip supporting unit 400 and to stably transfer the electroplated steel strip from the front direction to the rear direction, 600 to control the upper air cylinder 420 and the lower air cylinder 460 of the strip support portion 400 to sense the distance between the strip support portion 400 and the surface of the strip so that the edge surface of the strip and the torch block 530 (For example, zinc dendrite or the like) generated on the surface of the edge portion can be controlled to be removed.

Of course, the control unit may control the driving unit 300 to move the moving unit 200 inward or outward.

Referring to FIG. 7, the control process of the control unit as described above will be described in detail. When the foreign substance removing device of the electroplated steel sheet is driven under the control of the control unit, as shown in (a) By controlling the directional control valve 801 to switch to the 'A' port and to control the air to be supplied to the air cylinder 320 of the driving unit 300 through the major pressure reducing side 802 where the air pressure is changed according to the current value, 200) can be advanced (moved inward). Here, the advancing speed of the moving part 200 can be controlled through the speed control valve 803 for meter-out control.

When the strip is detected through the proximity sensor 620 of the sensor unit 600, as shown in (b), the control unit switches the 5/2 way directional control valve 804 to the 'B' The upper pinch roll 440 and the lower pinch roll 480 can be brought close to each other by controlling the air to be supplied to the upper air cylinder 420 and the lower air cylinder 460 through the upper pinch roll 805.

The air cylinder 320 of the driving unit 300 advances by a predetermined pressure at the major pressure reducing side 806 to be torch on the strip even if the upper pinch roll 440 and the lower pinch roll 480 are brought close to each other, The thickness of the thin strip having a thickness of less than 0.6 mm, 0.7-0.9 mm, 1.0-1.5 mm, and 1.5 mm or more is required to prevent the possibility of edge collapse And so on.

The foreign material removing apparatus as described above is slid on the surface of the strip in the case of the torch block 530 during driving, but since the amount of wear is different due to the driving of the guide roller 520 through the bearing 521, The position of the guide roller 520 can be adjusted by rotating the cam shaft 511. [

When the welded portion comes close during transportation of the strip, the control unit controls the air pressure of the upper air cylinder 420 and the lower air cylinder 460 by switching the 5/2 way directional control valve 804 to the 'A' port, The upper pinch roll 440 and the lower pinch roll 480 can be controlled to move away from each other.

In addition, the control unit controls the air pressure of the air cylinder 320 by switching the 5/3 way directional control valve 801 to the 'B' port so that the moving unit 200 can be moved backward (moved outward).

Here, when the steel plate is relatively moved backward to both ends of the upper portion of the LM guide unit 100, the distance between the strip and the torch is relatively long, so that foreign matter (e.g., zinc dendrite) A distance sensor 100a is provided at both ends of the upper portion of the LM guide unit 100 and the moving unit 200 whose current position is counted by using the distance sensor 100a, By moving back about -200 mm from the position in which it is being moved, it can be switched to the neutral position.

Thereafter, when the air supply is interrupted, the moving part 200 waits at the current position, and when the welding part of the strip passes, the above-described processes (a) and (b) The zinc dendrite can be effectively removed.

Therefore, the present invention can improve the productivity by preventing foreign matter generated in the electroplating process of the steel sheet from entering the strip and preventing dents from being generated.

According to the present invention, on the LM guide, the movable frame is moved forward and backward through the air cylinder, the strip is always maintained at a constant position through the upper pinch roll and the lower pinch roll, and the guide roller and the torch block are contacted The incompletely plated zinc dendrite can be removed from the strip edge portion, and the equipment configuration is simple, and troubles are not generated, thereby reducing the maintenance cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

100: LM guide part 110: Support block
120: LM guide rail 200:
210: moving plate 220: plural engaging frames
230: mobile block 300:
310: cylinder fixing block 320: air cylinder
330: cylinder rod 340: engaging link
400: strip support 410: upper engagement block
420: upper air cylinder 430: upper bracket
440: upper pinch roll 450: lower engaging block
460: Lower air cylinder 470: Lower bracket
480: Lower pinch roll 500: Foreign matter removal
510: Torch coupling block 520: Guide roller
530: Torch block 600: Sensor part
610: Sensor bracket 620: Proximity sensor

Claims (10)

An LM guide portion provided at an upper portion of the support block for guiding movement,
A moving unit that is moved along the LM guide unit through a driving unit,
A strip supporting part provided inside each of the moving parts to support the strip so that the strip can be transported through the moving part;
A foreign matter removing unit provided at the moving unit so as to be close to at least an edge of the strip and contacting the edge unit to remove foreign matter;
And a control unit for controlling the driving unit, the strip supporting unit, and the foreign substance removing unit to transfer the strip and remove the foreign matter,
The strip-
An upper joint block provided on both sides of the moving part and coupled to an upper portion of a strip feed groove to which the strip is to be fed in a front direction, and an upper cylinder rod fixed to penetrate through the upper joint block and vertically movable in a pneumatic manner The upper pinch roll is rotatably provided on the upper bracket. The upper pinch roll is rotatably mounted on the lower bracket. The lower pinch block is coupled to the lower portion of the strip transfer groove in the rear direction. A lower bracket fixed to the upper end of the lower cylinder rod and rotatably mounted on the lower bracket; a lower bracket fixed to the upper end of the lower cylinder rod, Foreign matter removal of electroplated steel sheet including lower pinch roll .
The method according to claim 1,
The apparatus for removing foreign materials on the electroplated steel sheet comprises:
A sensor unit for sensing a distance between the strip supporting unit and the surface of the strip to be transported,
Further comprising: an electroplated steel sheet;
3. The method according to claim 1 or 2,
The LM guide unit includes:
A plurality of LM guide rails provided on the support block and coupled in a direction in which the movable part is moved,
And the foreign matter removing device of the electroplated steel sheet.
The method of claim 3,
The LM guide unit includes:
A distance sensor for sensing a distance between the moving part and both ends of the LM guide part;
Further comprising: an electroplated steel sheet;
3. The method according to claim 1 or 2,
The moving unit is provided on both sides of the upper portion of the LM guide unit,
A moving plate provided to be positioned above the LM guide unit,
A plurality of engagement frames coupled to a lower portion of the moving plate so as to be movable in the LM guide unit,
And a moving block which moves the device constituent parts coupled to the lower part of the moving plate,
And the foreign matter removing device of the electroplated steel sheet.
6. The method of claim 5,
Wherein the movable block has a fixing groove formed on an outer surface thereof to which the driving unit is fixedly coupled, and a strip conveying groove for conveying the strip is formed on an inner surface thereof.
3. The method according to claim 1 or 2,
Wherein the driving unit is coupled to the moving unit on both sides of the LM guide unit,
A cylinder fixing block provided at both ends of the support block,
An air cylinder coupled to the cylinder fixing block,
A cylinder rod movably coupled to the inside of the air cylinder in a pneumatic manner,
And a connecting link provided at a projecting end of the cylinder rod and fixed to the moving part,
Wherein the foreign matter removing device comprises:
delete 3. The method according to claim 1 or 2,
The foreign-
A torch coupling block provided on both sides of the moving part and having an upper plate and a lower plate coupled to a rear inner side of a strip feed groove to which the strip is fed,
A guide roller rotatably coupled to a cam shaft provided between the upper plate and the lower plate,
A torch block provided adjacent to the guide roller and protruding from an inner surface of the strip conveying groove,
And the foreign matter removing device of the electroplated steel sheet.
3. The method of claim 2,
The sensor unit includes:
A sensor bracket provided at both sides of the moving unit and fixed to the rear upper surface of the strip conveying groove through which the strip is conveyed,
A proximity sensor provided at a protruding end of the sensor bracket for sensing a distance between the strip and the transported sensor;
Wherein the foreign matter removing device comprises:

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