KR20030030264A - apparatus for removing chips adhered to the surface of a feeding roll to feed a metal sheet for plating - Google Patents

Abstract

PURPOSE: An apparatus for removing chips adhered to the surface of deflector roll for feeding a metal sheet to be plated is provided to effectively remove chips formed when magnetic sludge melted in a plating solution is adhered to the surface of the deflector roll for feeding the metal sheet to be plated using a scraper of hydrochloric acid bath. CONSTITUTION: In a plating facility comprising a hydrochloric acid bath comprising a drip pan(12), a hydrochloric acid tank, and a pump, the apparatus for removing chips adhered to the surface of deflector roll for feeding a metal sheet to be plated comprises a driving cylinder(22) for vertically moving a frame bracket(21) supporting a base frame(19); central shafts which are rotationally supported to the base frame(19) by a bearing, in which a shaft core pipe extended to the other end side of the central shafts is installed in a hollow part penetrated to one end side of the central shafts, and on the outer circumferential surface of which a plural branch pipes are radially and projectingly formed in an equal angle; a plural supply and return branch pipes(17,18) which are connected to the shaft core pipe and hollow part through a rotary joint inserted into an opened side end of the central shafts, and in the middle of which an expansion pipe(55) is installed; a touch roll(30) rotationally installed at the base frame(19) so that the touch roll(30) touches the deflector roll(8) during ascending of the base frame(19); an electromotion part comprising a driving gear(32) installed at one end of rotation shaft of the touch roll(30), a driven gear(33) connected to the driving gear(32), and a plural electric powered belt(35) for sequentially transmitting rotary power of the touch roll(30) to the plural central shafts through the gears; and a plural scrapers(40) in which a grinding pad and grinding frames are installed, and which are mounted on each of the central shafts in a group in such a way that the scrapers are appeared and disappeared through the grinding pad, wherein the grinding pad is adhered to the surface contacted with the deflector roll(8) and adhered to the grinding frames.

Description

Apparatus for removing chips adhered to the surface of a feeding roll to feed a metal sheet for plating}

The present invention relates to an apparatus for removing a chip with a surface of a refractive roll for transporting a plate, and more particularly, to a metal ion chip attached to a refractive roll used in an electroplating facility such as an electroplating line of a steel mill cold rolling process by a scraper. The surface attachment chip removal apparatus of the refraction roll for plate | board transfer to remove.

In general, a zinc-nickel electroplating apparatus used in an electroplating line during a cold rolling process of a steel mill is generally provided with a plating cell 103 containing a plating solution 102 and an external power supply 104 as shown in FIG. The plate 110 is transferred to a gap between the conductive roll 105 and the plurality of anode bridges 106 and the conductive roll 105 and the anode 107 to which a negative (+) current is applied. It consists of up and down side refractive rolls (108, 109).

Therefore, according to the plating facility 101, metal ions dissolved in the plating solution 102 adhere to the surface of the plate 110 while the plate 110 passes between the anode 107 and the conductive roll 105. Plating is done by doing so.

However, when the above plating operation is performed at a high speed, the state of the chip 111 on the surface of the refractive roll 108 is ascended by the plated plate 110 on which magnetic sludge, such as Ni or Fe, present in the plating solution is electrically charged. Since the magnetic sludge is continuously supplied as the operation continues, the chip 111 continues to grow and thus has a very high hardness.

Therefore, the plate 110 is a bending mark is generated on the surface by the chip 111 not only the product quality is lowered, but also the chip 111 affects the conductive roll 105, the plate 110 and the conductive roll The contact state of the 105 is made poor, resulting in poor arcing, resulting in defects in the arc spot, and excessive problems such as excessive wear of the refraction roll 108 having the rubber coating layer.

Therefore, in order to remove the chip 111 attached to the refraction roll 108, the operation must be stopped and a separate chip removing operation is performed, which causes another problem that requires a large number of workers and time.

Accordingly, a plating facility having a hydrochloric acid bath facility as shown in FIG. 2 has been proposed, and the hydrochloric acid bath facility has a refractive roll 108 bathed in an internal hydrochloric acid solution 117 as shown by reference numeral 120. The hydrochloric acid solution is drip pans through the drip pan 112, which is installed adjacent to the refraction roll 108, and the hydrochloric acid solution 117, and the supply pipe 113 and the return pipe 114. A pump 116 circulating to 112.

Accordingly, according to the hydrochloric acid bath facility 120, the hydrochloric acid solution of the hydrochloric acid tank 115 is supplied to the drip pan 112 to circulate the refraction roll 108 to separately remove the chip 111 of the refraction roll 108. The chip 111 attached to 108 has been dissolved automatically by hydrochloric acid solution. However, when the amount of hydrochloric acid solution supplied to the drip pan 112 becomes excessive, a large amount of hydrochloric acid fume (fume; 118) is removed from the hydrochloric acid solution. There was a problem that prevents the worker's access to cause work, and suddenly corrode the surrounding equipment. In addition, since the chip 111 is removed only by dipping the refractive roll 108 in the drip pan 112 to dissolve the chip 111 by the hydrochloric acid solution 117, the time required for removing the chip is high. There was also a problem.

The present invention has been proposed to solve the problems caused by the refractive roll chip removal method of the plating equipment having a conventional hydrochloric acid bath, by installing a scraper that rotates by the rotational force of the refractive roll between the refractive roll and the drip pan By scratching the chip attached to the surface of the refraction roll and polishing the surface, it minimizes the contact between the refraction roll and hydrochloric acid to suppress the generation of hydrochloric acid fume, improve the chip removal performance, and greatly reduce the time required for removal work. Its purpose is to help.

1 is a schematic diagram schematically showing a conventional electroplating equipment.

Figure 2 is a schematic diagram schematically showing an electroplating facility in which a conventional hydrochloric acid bath facility is added.

Figure 3 is a schematic diagram schematically showing an electroplating equipment having a hydrochloric acid bath equipment applied to the chip removal apparatus according to the present invention.

4 is an enlarged view showing in detail the drip pan portion of FIG.

5 is a plan sectional view of FIG.

6 is a bottom cross-sectional view showing in detail one central axis of FIG.

FIG. 7 is a cross-sectional view of FIG. 6 showing the scraper in detail. FIG.

FIG. 8 is an exploded perspective view partially showing the scraper of FIG. 7; FIG.

9 is an exploded perspective view of the scraper of FIG.

* Explanation of Signs of Major Parts of Drawings *

1 plating equipment 8 refractive roll

10: plated plate 13,14: hydrochloric acid solution supply and return tube

15: hydrochloric acid tank 16: pump

17,18: supply and return branch 19: base frame

20: hydrochloric acid bath equipment 22: driving cylinder

23: central axis 27: branch pipe

28: rotary joint 30: contact roll

35: electric belt 36: electric motor

40: scraper 41: polishing pad

42,43: upper and lower polishing frame 44: liquid supply pipe

46: nozzle stand 47: nozzle bundle

49: slit 50: guide

51: sealing plate 53: stopper assembly

54,70: compression spring 55: expansion tube

59: electric pulley 60: bundle of guides

In order to achieve the above object, the present invention provides a drip pan installed under an upstream refraction roll bathing a plated plate into a plating solution of a plating cell, a hydrochloric acid tank storing hydrochloric acid solution, and a hydrochloric acid solution through a supply pipe and a return tube. A plating facility comprising a hydrochloric acid bath facility consisting of a pump for circulating a water to a drip pan, wherein the plating cylinder is rotatably supported on a base frame by a drive cylinder and a bearing for moving the frame bracket for supporting the base frame up and down. An axial center tube and a hollow part are provided in the penetrated hollow part, which is provided with an axial core tube extending to the other end side, and has a plurality of branch tubes radially projecting on the outer circumferential surface thereof, and a rotary joint inserted into the open end of the central axis. A plurality of supply and return branch pipes and base strips each connected to A contact roll rotatably mounted to the base frame so as to be in contact with the refraction roll at the time of rising, the contact roll rotating shaft has one drive gear, a driven gear coupled to the drive gear, and the rotational force of the contact roll through a plurality of central axes. It is installed in the transmission unit consisting of a plurality of transmission belts to be transmitted sequentially, the polishing pad attached to the contact surface with the refraction roll and the polishing frame with the polishing pad attached to form a set for each central axis so that it can be projected through the polishing pad Provided is a surface attachment chip removing device for a plated sheet feeding refraction roll composed of a plurality of scrapers.

Hereinafter, with reference to the accompanying drawings, the surface-attached chip removing device of the refractive plate for transfer plate transfer plate according to an embodiment of the present invention in more detail as follows.

The chip removing apparatus of the present invention is applied to the hydrochloric acid bath facility 20 of the plating facility 1 as shown in FIG. 3, the drip pan 12 and the plating facility 1 of the hydrochloric acid bath facility 20. Of the hydrochloric acid solution 17 supplied from the hydrochloric acid tank 15, as well as scraping off the chips provided between the refraction rolls 8, and adhered to the surface of the refraction rolls 8 by the scraper 40. (8) It serves to polish the chip attachment surface while spraying on the surface.

To this end, the chip removing device of the present invention is largely as shown in Figures 4 and 5 drive cylinder 22, the central shaft 23, supply and return branch pipes (17, 18), contact rolls (30), It consists of a transmission part 36 and a scraper 40, where the drive cylinder 22 supports a frame bracket 21 supporting a pair of base frames 19 which are installed before and after the drip pan 12. It is attached to the bottom surface serves to move the plurality of central axis 23 up and down through the base frame 19.

As shown in FIG. 5 and FIG. 6, the central axis 23 rotatably supported on the front and rear base frame 19 by the bearing 24 is, for example, in a state where a 90 degree interval is maintained as shown in FIG. 7. A pair of four branch pipes 27 protruding radially are arranged in the axial direction as shown in Fig. 6, and the hollow portion 25 is formed therein with one side open. The rotary joint 28 is fitted to the open end of one side of the hollow part 25 through a connecting shaft 58, and an electric pulley 59 is mounted at the opposite end thereof, on the central axis of the hollow part 25. The shaft core tube 26 supported by the bearing part 61 attached to the joint 28 and the hollow part 25 inner peripheral surface is provided in the state extended long.

4 to 6, the plurality of supply and return branch pipes 17 and 18 connected to the central shaft 23 through the rotary joint 28 may include the main supply pipe 56 and the main return pipe ( 57 is connected to the hydrochloric acid solution supply pipe 13 and the drain pipe 11, respectively, as shown in Figure 3, and as shown in Figure 4 is installed in the middle of the expansion pipe 55 to enable vertical extension The expansion pipe 55 is connected to the supply branch pipe 17 through the rotary joint 28 mounted at the open end of the central shaft 23, and is connected to the connecting shaft fitted to the open end of the central shaft 23. 58 is in communication with the return branch pipe 18 inserted into the rotary joint 28 in a state rotatable by the bearing 62 and assembled on the side surface of the joint 28.

As shown in FIGS. 4 and 5, the contact rolls 30 installed on the left and right sides of the drip pan 12 have a cylindrical mandrel and have a center of the rotation shaft 31 by the bearing 24 on one side of the base frame 19. It is rotatably supported so as to contact the outer circumferential surface of the refraction roll 8 when the base frame 19 is raised so as to rotate in the opposite direction.

As such, the transmission unit 36 provided at the rear end of the central shaft 23 to transmit the rotational force of the contact roll 30 rotating by the rotational driving force of the refractive roll 8 to the central shaft 23 is illustrated in FIG. 5. As shown in FIG. 1, the driving force 32 of one end of the rotating shaft 31, the driven gear 33 engaged with the driving gear 32, and the rotational force of the gears 32 and 33 may be rotated. Consists of a plurality of transmission belt 35 to transmit.

Here, the drive gear 32 rotates the engaged driven gear 33 while rotating together with the contact roll 30, and the driven gear 33 is the electric pulley 59 mounted together on the gear shaft 34. The rotational force is transmitted to the electric pulley 59 of the adjacent central shaft 23 through the electric belt 35 wound around the motor, and the rotational force transmitted to the central shaft 23 through the electric pulley 59 is the next electric belt. It is transmitted to the next central axis 23 through 35 to rotate all the central axis 23 in sequence.

As shown in FIGS. 3 to 9, the plurality of scrapers 40 provided at the upper end portion of the branch pipe 27 of the central shaft 23 have a large nozzle bundle 47 and upper and lower polishing, as shown in more detail in FIG. 7. Frame 42, 43, stopper assembly 53, compression spring 54.

Here, the nozzle bundle 47 is composed of a plurality of feed pipes 44, a body 45 and a nozzle unit 46 as shown in Figures 7 to 9 again, the feed pipe 44 is the central axis 23 It is inserted into the guide tube 50 screwed to the upper end of the plurality of branch pipes (27) protruding around the circumference and is in communication with the central axis (23) through the branch pipe (27), the liquid supply pipe ( The body portion 45, which is integrally attached to the upper end of 44, has a cylindrical shape in which the entire cross section is curved in an arc shape with convex upwards. The plurality of nozzle units 46 protruding integrally from the upper surface of the body part 45 extend in parallel with the liquid supply pipe 44 at regular intervals, and the diameter of the end portion thereof is sharply reduced like the nozzle tip. .

The upper and lower polishing frames 42 and 43 surrounding the nozzle bundle 47 thus formed are curved to have the same curvature radius as the body portion 45 of the nozzle bundle 47 and the frame ( 42) The lower polishing frame 43 in the form of a flat plate covering the open side of the rear, the upper polishing frame 42, the polishing pad 41 is attached to the left and right corners of the outer peripheral surface by the fixing pad 63 A plurality of slits 49 are cut in the longitudinal direction through the pad 41 so that the nozzle stand 46 can be projected on the outer circumferential surface.

The lower polishing frame 43, which is bolted to the rear end of the upper polishing frame 42 to surround the nozzle bundle 47 together with the upper polishing frame 42, has a plurality of liquid supply pipes 44 through which the liquid supply pipe 44 can pass. The guide hole is penetrated, and a guide ring 48 for sliding the liquid feed pipe 44 is fitted in the guide hole.

Guide tube 50 for sliding the liquid supply pipe 44 protrudes around the central axis 23 so that the hydrochloric acid solution flowing from the central axis 23 through the branch pipe 27 can be supplied to the nozzle bundle 47. The plurality of branch pipes 27 are screwed to the top to connect the branch pipes 27 and the liquid supply pipe 44, and as shown in FIGS. 8 and 9, the rectangular cross section to mount the guide bundle bundle 60 It has a cylinder having.

As such, the stopper assembly 53 installed in the guide tube 50 to short-circuit the flow of hydrochloric acid solution introduced into the guide tube 50 through the branch pipe 27 is connected to the connecting rod such as a dumbbell as shown in FIGS. 7 and 9. (64) and the rubber ring 65 and the support plate 66 coupled to the upper and lower sides of the connecting rod 64, the rubber ring 65 is the liquid of the sealing plate 51 screwed to the top of the branch pipe (27) The lower surface of the sealing plate 51 is placed to open and close the outlet 52.

The compression spring 54 fitted around the feed pipe 44 of the nozzle bundle 47 has a connecting bracket 67 of the nozzle body 45 and a guide ring 48 of the lower polishing frame 43 as shown in FIG. Compressed when the nozzle bundle 47 is lowered by a distance d along the inner circumferential surface of the upper polishing frame 42 due to the contact between the scraper 40 and the refraction roll 8 as shown above in FIG. 7. It is supposed to be.

In addition, the outer circumferential surface of the guide tube and the outer circumferential surface of the lower polishing frame 43 is attached to the guide bundle bundle 60 as shown in Figure 7 to 9, the guide bundle bundle 60 is again the lower polishing frame ( A pair of guides 68 bolted to the left and right sides of the guide ring 48 of the guide ring 48, a guide bracket 69 bolted to the left and right of the guide tube 50, and an upper end of the guide 68 Consists of a guide head 71 is bolted to the guide bracket 69, the guide slit 72 is inserted into the guide bracket 68 to be slidably open.

Finally, around the liquid supply pipe 44 between the lower polishing frame 43 and the guide tube 50, the upper polishing frame 42 may react against the pressing force applied to the polishing frames 42 and 43 itself. The compression spring 70 is wound up.

Referring to the operation of the attachment chip removal apparatus according to the present invention configured as described above are as follows.

As a result of the plating operation by the plating equipment 1 having the hydrochloric acid bath equipment 20 as shown in FIG. 3, it is confirmed that a large amount of chips are attached to the refractive roll 8 according to the present invention. Turn on the attachment chip removal device.

As such, when the operation of the removal device is turned on, the power of the motor of the pump 16 is turned on, and the hydrochloric acid solution is pumped from the hydrochloric acid tank 15 to the main supply pipe 56 through the supply pipe 13. At the same time, when the operation of the driving cylinder 22 is started, the frame bracket 21 of the upper end of the cylinder 22 and the base frame 19 attached to the upper end of the bracket 21 move upwards from the left and right of the drip pan 12. Then, the contact roll 30, which is raised along the base frame 19, rotates in contact with the refractive roll 8, the removal operation of the attachment chip by the scraper 40 is started.

First, when the contact roll 30 is rotated by the contact with the refractive roll 8, the drive gear 32 is rotated along the rotating shaft 31 to drive the driven gear 33, and then the driven gear 33 and The electric pulley 35 mounted on the same gear shaft 34 also rotates, so that each central shaft 23 is sequentially rotated through the electric belts 35 wound on the pulley 35. At this time, each scraper 40 protruding radially from the central axis 23 is attached on the surface of the refractive roll 8 by rotating in the same clockwise direction as the refractive roll 8 as shown by the arrow in FIG. 4. The chip is removed. First, when the scraper 40 approaches the refraction roll 8, it is attached to the surface of the refraction roll 8 by the tip portion of the nozzle unit 46 protruding above the upper polishing frame 42. The chip 81 is scraped off. Subsequently, as the scraper 40 approaches the deflection roll 8, the nozzle bundle 47 is pushed down along the guide tube 50, with each nozzle stage 46 subsequently shown in the upper part of FIG. As it is, the surface of the refraction roll 8 from which the adhesive chip is removed is polished by the polishing pad 41 while being completely pushed into the upper polishing frame 42 by the refraction roll 8.

However, when the nozzle bundle 47 is pushed toward the central axis 23 along the guide tube 50 while pressing the compression spring 54 as described above, it is coupled to the lower end of the liquid supply pipe 44 as shown in FIG. 7. The plug assembly 53 is lowered so that the outlet 52 of the sealing plate 51 is opened. At this time, the hydrochloric acid solution flowing in the high pressure inside the central shaft 23 is discharged from the outlet 52 and the guide tube 50. And it is supplied to the nozzle bundle 40 through the support plate 66, the hydrochloric acid solution supplied to the nozzle bundle 40 through the feed pipe 44 and the body portion 45 of the nozzle bundle (40) nozzle stand 46 ) Is sprayed onto the surface of the refraction roll 8. Therefore, in the state in which hydrochloric acid solution is sprayed on the attachment chip, the attachment chip can be removed from the surface of the refraction roll 8 by the polishing frames 42 and 43 more effectively.

In addition, the scraper 40 in which the nozzle bundle 47 is already pushed inward in contact with the refraction roll 8 as shown in the upper part of FIG. 7 has an uneven and high hardness attachment chip as shown by a hidden line in FIG. 7. When the grinding frame (42) and (43) itself is guided by the guide bundle 60, while the compression spring 70 is compressed to move downwards, in this case, the liquid supply pipe 44 is similarly lower polishing frame The high pressure hydrochloric acid solution of the center tube 23 is instantaneously moved through the nozzle unit 46 by moving downward with the 43 and releasing the rubber ring 65 of the plug assembly 53 from the outlet 52. 8) Spray on the surface. Therefore, the hydrochloric acid solution is strongly sprayed once again on the localized portion where the chip 81 is attached to the chip 81, which is not easy to remove because of its high hardness. ), The effect of polishing can be further enhanced.

In this way, when all the chips attached to the refraction roll 8 are removed, the driving cylinder 22 and the pump 16 are turned off by the power supply, and then the attachment chip removing operation is completed.

As described above, according to the surface attachment chip removing apparatus of the refractive roll for plate transfer according to the present invention, the chip attached to the surface of the refractive roll by the nozzle unit elastically installed in the polishing frame so as to emerge through the polishing surface of the scraper. At the same time, it is possible to quickly and efficiently remove the chip from the refraction roll by scraping the spot where the chip is attached by the polishing pad while spraying hydrochloric acid solution supplied from the outside through the central axis through the nozzle shaft. In addition, it is not necessary to worry about equipment corrosion due to the generation of hydrochloric acid fume, and it is possible to reduce the cost of using hydrochloric acid solution, thereby reducing the cost of treating waste hydrochloric acid.

In addition, the damage of the refraction roll can be prevented, so that the life can be extended, the plating time can be shortened, and surface quality defects such as dents and arc spots caused by poor shape due to chips can be prevented. .

Claims (3)

Hydrochloric acid tank (15) storing a drip pan (12) and hydrochloric acid solution (17) installed under an upstream refractive roll (8) for bathing the plate (10) into the plating solution (2) of the plating cell (3). And a hydrochloric acid bath facility (20) consisting of a pump (16) for circulating the hydrochloric acid solution (17) to a drip pan (12) through a supply pipe (13) and a return pipe (14). To A hollow cylinder which is rotatably supported on the base frame 19 by a drive cylinder 22 for moving the frame bracket 21 supporting the base frame 19 up and down and a bearing 24 and penetrated to one end side thereof ( At the open end of the central axis 23, the central shaft 23 is provided on the other end 25 and the central axis 23 is formed to be projected to form a plurality of branch pipes 27 in a radial direction on the outer peripheral surface. A plurality of supply and return branch pipes 17 and 18 connected to the axial center pipe 26 and the hollow part 25 and having a telescopic pipe 55 interposed therebetween through a rotary joint 28 inserted therein; (19) the driving gear 32 and one end of the contact roll 30 rotatably installed on the base frame 19 so as to contact the refractive roll 8 and the contact roll 30 and the rotating shaft 31 at the time of the rise. The contact roll 30 through the driven gear 33 and the gears 52 and 53 coupled to the drive gear 32. A transmission unit 36 including a plurality of transmission belts 35 sequentially transmitting rotational force to the plurality of central axes 23, and a polishing pad 41 attached to a contact surface with the refractive roll 8; Consists of a plurality of scrapers 40 embedded in a polishing frame (42, 43) to which the polishing pad 41 is attached and mounted in a pair for each of the central axes (23) so as to be protruded through the polishing pad (41). Surface-attached chip removing device of the refractive roll for plate transfer. According to claim 1, The scraper 40 is attached to the upper end of the liquid supply pipe 44 and the liquid supply pipe 44 in communication with the branch pipe 27 and the body portion 45 and the upper surface of the body portion 45 curved in an arc shape. In the nozzle bundle 47 consisting of a plurality of nozzle units 46 extending at regular intervals, the polishing pad 41 is attached to the outer circumferential surface, and the plurality of slits 49 in which the nozzle units 46 emerge, The nozzle assembly 47 together with the upper polishing frame 42 guides the liquid supply pipe 44 by the upper polishing frame 42 having a cross-sectional arc shape and a guide ring 48 mounted at the center thereof. Guide pipe 50 mounted at the tip of the branch pipe 27 to guide the lower polishing frame 43, the liquid supply pipe 44 surrounding the seal, the sealing plate 51 mounted on the inner peripheral surface of the branch pipe 27 Plug assembly 53 for opening and closing the outlet 52 of the, and the body portion 45 and the lower polishing frame 4 of the liquid supply pipe 44 3) A chip removing device for attaching a surface of a refractive roll for plate transfer, comprising a compression spring (54) sandwiched between. The method of claim 2, The scraper 40 is a pair of left and right guides 68 attached to the outer surface of the lower polishing frame 43, attached to the left and right of the guide tube 50, so that the guides 68 can slide. A guide bundle 60 made up of a guide bracket 69 into which a guide slit 72 to be fitted is opened, and a guide head 71 bolted to an upper end of the guide 68, and the liquid supply pipe ( And a compression spring (70) sandwiched between the lower polishing frame (43) of the 44 and the guide tube (50).