KR100694249B1 - Apparatus for producing coated steel for corrugated pipe - Google Patents

Abstract

The present invention is equipped with a surface treatment machine for surface treatment of the curved steel sheet more stably and efficiently by spraying sand in a sealed space, significantly improving the overall working conditions for forming a coated steel sheet and productivity To provide a corrugated tube coated steel sheet forming apparatus that can improve the. Corrugated pipe coating apparatus for forming a corrugated tube of the present invention is iron plate supply means for supplying a flat iron plate, a bending molding machine for bending the flat iron plate supplied from the iron plate supply means to bend in the width direction to be processed into a curved iron plate, A surface treatment machine for roughly treating both surfaces of a curved steel sheet processed through a bending molding machine, a pressure-sensitive resin applicator for spraying and applying adhesive resin to both surfaces of a curved steel sheet roughly surface treated via the surface treating apparatus, and the adhesiveness A heater that melts the adhesive resin coated on both sides of the curved steel sheet via a resin applicator and melts it in a gel state, and a coating resin is coated on both sides of the curved iron sheet in which the adhesive resin is melted in a gel state via the heater. In the coating device formed by the iron plate, the surface treatment machine, the oyster An airtight case having a guide passage having both side guide rails for guiding the bent steel plate in a state of being cut off from the outside on the movement path of the bent steel plate via the molding machine, and the two ends of the guide passage across the guide line The front and rear guide rollers installed up and down to guide the curved iron plate and the sand supplied separately to both sides of the curved steel plate passing through the plurality of pieces in the airtight case are forced to discharge the surface roughly on both sides of the curved steel plate. It includes the upper and lower sanding nozzles to be treated.

Description

Apparatus for producing coated steel for corrugated pipe}

1 is a schematic view showing a coated iron sheet forming apparatus for a corrugated pipe of the present invention

Figure 2a is a perspective view of a curved iron plate surface-treated as a surface treatment machine of the present invention corrugated tube coated steel sheet forming apparatus

Figure 2a is a perspective view of the coated iron sheet finally formed through the coating apparatus for forming a corrugated tube of the present invention

Figure 3 is a plan view showing a surface treatment machine of the present invention corrugated tube coated iron sheet forming apparatus

Figure 4 is a front view showing the surface treatment machine of the present invention corrugated tube coated iron sheet forming apparatus

5 is a cross-sectional view showing a surface treatment machine of the present invention corrugated pipe coating apparatus for forming a sheet

Figure 6 is an enlarged view of the upper and lower sanding nozzles constituting the surface treatment machine of the present invention coated corrugated sheet forming apparatus

<Description of Symbols for Main Parts of Drawings>

1: coated iron sheet 1a: flat iron sheet 1b: curved iron sheet

1c: Adhesive resin 1d: Coated resin 10: Airtight casing

11: support frame 12: opening and closing door 13: hopper

13a: sand recovery port 14: sand collection pipe 15: sand inlet

15a: through 20: guide passage 21: guide rails on both sides

22, 22 ': front and rear cover plates 22a, 22a': air outlet

23, 23 ': front and rear blower fan 24, 24': front, rear air supply hose

30, 40: upper and lower sanding nozzles a: sand pot

b: port for compressed air c: integrated injection port

31, 41: upper and lower horizontal bracket 32, 42: upper and lower brackets

50: cyclone separator 51: air outlet 52: sand outlet

53: sand supply hose 60: compressed air supply container 61: compressed air supply hose

The present invention is for forming a coated steel sheet used as the material of the spiral tube, in particular, the coating iron sheet forming apparatus for corrugated pipe to efficiently surface the both sides of the pre-processed curved steel sheet in the process of forming the coated steel sheet It is about.

The present applicant filed a patent application No. 56978 in "Coated Sheet Metal Forming Apparatus for Synthetic Resin Spiral Tube" and was granted Patent No. 446939 (registered on Aug. 24, 2004).

The coated steel sheet forming apparatus for a synthetic resin spiral pipe of the present invention has been processed into a curved steel sheet by bending the iron sheet supply means for supplying a flat iron sheet having a predetermined width, and bending the flat iron sheet supplied from the iron sheet supply means in a width direction. And a pressure-sensitive resin applicator for spraying and applying adhesive resin on both sides of the bent steel plate processed through the bending machine, and a pressure-sensitive resin applied to both sides of the bent steel plate via the adhesive resin applicator. A heater for melting in a gel state and a coater for forming a coated steel sheet by coating a coated resin on both sides of a curved steel sheet in which the adhesive resin is melted in a gel state via the heater, wherein the bending machine and the adhesive resin are used. Between the applicator, the bending of the iron sheet processed to bend from the bending machine The technical spirit of the present invention is to arrange a scraper having upper and lower rotating brushes rotatably installed to scrape both surfaces and roughen the surface. According to the coated steel sheet forming apparatus for a synthetic resin spiral tube, both surfaces of the curved steel sheet processed by the bending machine is scraped with a scraper having upper and lower rotary brushes to roughen the surface, and then spray-coated in a pressure-sensitive resin applicator, followed by heating and melting by a heater. Since the adhesive resin can be firmly electrodeposited on both sides of the curved steel sheet, by increasing the unity of the coated resin coated on the both sides of the curved steel sheet with a coater through the adhesive resin, when manufactured and used as a synthetic resin spiral tube Even when subjected to shrinkage action or local impact and load caused by temperature change, it is possible to obtain a high quality coated steel sheet from which the coated resin is not separated from the curved steel sheet.

However, in the coated steel sheet forming apparatus for synthetic resin spiral pipe of the present invention, the scraper is rotated while the upper and lower rotary brushes are exposed to the outside, so that both sides of the curved steel sheet are scratched and roughly surface treated. The upper and lower rotary brushes that rub directly in the process of surface treatment cause severe noise and scatter fine iron powder and dust, which not only causes the working environment to be bad, but also makes the upper and lower brushes easy to wear. Accordingly, there is a problem in that the production of the coated steel sheet is interrupted and the upper and lower brushes are frequently replaced to reduce the production time as the working time is shortened. Furthermore, there is a concern that the spark generated when the upper and lower rotary brushes are in frictional contact with both sides of the curved steel sheet is sprayed from the adhesive resin applicator around and transferred to the adhesive resin spread in the air, causing fire. Was done.

The present invention is equipped with a surface treatment machine capable of surface treatment of both sides of the curved steel sheet more stable and efficient at the same time by spraying and sand sand in a closed space, dramatically reducing the overall work conditions for forming the coated steel sheet An object of the present invention is to provide an apparatus for forming a coated iron sheet for corrugated pipe that can improve and improve productivity.

The present invention also bends the iron plate supply means 100 for supplying the flat iron plate (1a) having a predetermined width and the flat iron plate (1a) supplied from the iron plate supply means 100 to bend in the width direction The surface treatment machine 300 for roughly treating both surfaces of the bending molding machine 200 and the bending steel plate 1b processed via the bending molding machine 200, and the surface treatment machine 300. The adhesive resin applicator 400 which spray-sprays the adhesive resin 1c on both surfaces of the curved iron plate 1b roughly treated with the surface of the curved iron plate 1b, and the curved iron plate 1b via the adhesive resin applicator 400 Heater 500 for heating the adhesive resin (1c) coated on both sides of the) to melt in a gel state, and a flexible iron plate (1b) in which the adhesive resin (1c) melted in a gel state via the heater 500 Coating formed by coating iron sheet (1) by coating coated resin (1d) on both sides of In the points consisting of 600, and the like as conventional technology concept.

However, in the apparatus for forming a corrugated tube coated iron sheet according to the present invention, the surface treatment apparatus 300 is bent iron plate 1b in a state of being cut off from the outside on the movement path of the curved iron plate 1b via the bending machine 200. ) Is provided with an airtight case (10) having a guide passage 20 for guiding and passing through the sand, and the sand supplied separately to both sides of the bent iron plate (1b) passing through a plurality of pieces in the airtight case (10) It is characterized by the technical configuration that the upper and lower sanding nozzles 30, 40 to be forcibly discharged.

The coated iron sheet forming apparatus for corrugated pipe of the present invention as shown in Figure 1 and 3 to 5, the bent iron plate (1b) processed via the bending molding machine 200 maintains a state blocked from the outside To pass in the airtight case 10 along the guide passage 20 to be forced to the upper and lower sanding nozzles 30, 40 on both sides of the bent iron plate (1b) passing in the airtight case (10). It is equipped with a surface treatment unit 300 configured to roughly surface-treat the sand by sandblasting friction, and when the surface of the curved steel sheet 1b is formed in the process of forming the coated steel sheet 1 as shown in FIGS. 2A and 2B, Since it prevents the generation of iron powder and dust, it not only greatly improves the working environment for forming the coated steel sheet 1, but also avoids direct friction between the curved steel sheet 1b and the components for surface treatment to prevent sparks. Haircut It prevents the wear of components in the workshop to form the coated steel sheet 1, and at the same time to replace the components frequently during operation by extending the service life of the components for surface treatment It is to have an advantage such as to increase the output of the coated iron sheet (1) to avoid work.

Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail.

In the present invention, the configuration of the iron plate supply means 100, the bending molding machine 200, the adhesive resin applicator 400, the heater 500, the coating machine 600 of the registered publication of Patent No. 446939 described in the prior art above Since the description is the same as that of the description, further description will be omitted.

The surface treatment unit 300 has an airtight case 10 having a guide passage 20 for guiding and passing the bent iron plate 1b processed in a state of being cut off from the outside, and a plurality of sets in the airtight case 10. It consists of upper and lower sanding nozzles 30, 40 for discharging the sand supplied separately to both sides of the curved iron plate (1b) passing through. The surface treatment apparatus 300 configured as described above allows the curved iron plate 1b processed through the bending molding machine 200 to pass through the airtight case 10 along the guide passage 20 which maintains a state of being blocked from the outside. Both surfaces of the curved iron plate 1b passing through the airtight case 10 are roughly surface treated by forcibly sanding and sanding sand as the upper and lower sanding nozzles 30 and 40.

3 to 5, the airtight case 10 may be installed to be supported as a support frame 11 erected below the box shape having an empty space therein. The airtight case 10 serves to secure a sealed space for roughly treating both surfaces of the curved iron plate 1b guided through the guide passage 20. At this time, the front and rear surfaces of the hermetic case 10 are provided with opening and closing doors 12, respectively, so that the upper and lower sanding nozzles 30 and 40 installed in the hermetic case can be inspected.

In addition, a hopper 13 having a sand recovery port 13a is continuously connected to the lower part of the airtight case 10, and an air outlet 51 is formed at one end of the airtight case 10 at an upper end thereof. At the bottom, a cyclone separator (50) having a sand outlet (52) is provided separately, and the sand recovery tube (14) extending from the sand recovery port (13a) of the hopper (13) is the cyclone separator (50). And a plurality of sand supply hoses 53 connected to the upper outer surface of the upper side and extending from the sand outlet 52 of the cyclone separator 50 to penetrate the airtight case 10. By connecting to the 30 and 40, respectively, the sand discharged by the upper and lower sanding nozzles 30 and 40 in the hermetic case 10 is circulated and supplied. That is, sand forcedly injected through the upper and lower sanding nozzles 30 and 40 in the airtight case 10 is dropped by its own weight, and the sand recovery port 13a and sand of the hopper 13 together with air. When recovered to the cyclone separator (50) to maintain the suction state through the collecting pipe 14, the air is separated in the cyclone separator (50) through a separate air filter (51) (not shown) And the sand is discharged to the sand discharge port 52 of the cyclone separation cylinder 50 by its own weight, and the airtight case 10 is provided through a plurality of sand supply hoses 53 extending from the sand discharge port 52. ) Is circulated and supplied to the upper and lower sanding nozzles 30 and 40.

Here, the front and rear surfaces of the hermetic case 10 may be provided by installing a sand inlet 15 having a plurality of through holes 15a formed thereon so as to communicate with the inside of the hermetic case. The sand inlet 15 is for sand recovery port 13a and sand recovery of the hopper 13 with the sand injected from the upper and lower sanding nozzles 30 and 40 in the airtight case 10. The airtight case is recovered by the cyclone separation tank 50 which maintains a suction state through the pipe 14, and is sucked out together with air through the air inlet port 51 in the cyclone separation tank 50 and lost by the amount of sand. Through the sand inlet (15) of the (10) allows to add a new sand.

3 through 5, the guide passage 20 passes through the airtight case 10 to face each other at intervals on a path through which the curved iron plate 1b passes through the bending machine 200. The guide rails 21 are installed so as to extend forward and backward, and the air outlets 22a and 22a 'are integrally formed at the inlet and outlet sides of the guide rails 21 passing through the airtight case 10. The rear cover plates 22 and 22 'are installed to be covered up and down, and branched from the front and rear blower fans 23 and 23' which are installed directly below the inlet and outlet sides of the guide rails 21. The front and rear air supply hoses 24 and 24 'are connected to the air outlets 22a and 22a' of the front and rear cover plates 22 and 22 ', respectively. The guide passage 20 guides the curved iron plate 1b through the bending molding machine 200 to pass through the airtight case 10 along the guide rails 21, and blows the front and rear air. The front and rear cover plates 22 and 22 in which air supplied through the fans 23 and 23 'and the front and rear air supply hoses 24 and 24' are covered at the inlet and outlet sides of the guide rails 21 on both sides. The air blowing ports 22a and 22a 'are blown out to form air curtains at the inlet and outlet sides of the guide rails 21 on which the curved iron plate 1b enters and exits, thereby allowing the inside of the airtight case 10. Sand is sprayed from the upper and lower sanding nozzles 30, 40 to prevent the outflow through the inlet and outlet side of the curved iron plate (1b) to the outside.

And, the guide rails 21 on both sides of the guide passage 20, it is preferable to install the front and rear support frame (25, 25 ') to support the lower portion. At this time, the front and rear support frame (25, 25 ') has a support plate (25a, 25a') installed horizontally, so that the front and rear blowing fan (23, 23 ') can be placed on the support plate.

Further, the front and rear guide rollers 26 and 26 'are installed on the line and the rear end of both guide rails 21 of the guide passage 20 up and down across the guide rails, and the bending molding machine ( The bent iron plate (1b) via the 200 to allow the moving through the hermetic case (10) stably.

The upper and lower sanding nozzles 30 and 40 are vertically installed horizontally between two vertical members 16 vertically erected in the airtight case 10 as shown in FIGS. 4 to 5. It is attached to the ends of the upper and lower brackets (32) and (42), which are vertically connected and fixed at equal intervals in a pair of horizontal fixing units (31) and (41), respectively, toward both sides of the curved iron plate (1b). It should be installed so that sand can be sprayed.

In addition, the upper and lower sanding nozzles 30 and 40 are integrated injection ports c in communication with the ports for sand and compressed air (a) and (b) branched, respectively, as shown in FIGS. 4 and 6. And a plurality of sand supply hoses 53 extending from the sand outlet 52 of the cyclone separator 50 to the sand ports of the upper and lower sanding nozzles 30 and 40. A plurality of compressed air supply hoses 61 extending to penetrate the airtight case 10 from a separate compressed air supply cylinder 60 installed at an outer side of the airtight case 10. It is important to distribute them to the compressed air port (b) of the upper and lower sanding nozzles (30) and (40), respectively. The reason is for the compressed air of the upper and lower sanding nozzles 30, 40 installed to direct both sides of the curved iron plate 1b through the compressed air supply hoses 61 from the compressed air supply cylinder 60. When the compressed air is supplied to the port (b), the upper and lower sanding nozzles 30 and 40 of the upper and lower sanding nozzles 30 are passed through the sand supply hoses 53 extending from the sand outlet 52 of the cyclone separator 50. The sand is sucked into the sand port a quickly, forcibly spraying sand on both sides of the curved iron plate 1b passing through the integrated spray port c of the upper and lower sanding nozzles 30 and 40. This is to make the surface roughly by frictionally contacting both surfaces of the curved iron plate 1b with sand.

As described above, the corrugated pipe coating apparatus for forming a corrugated tube of the present invention in the airtight case having a guide passage for guiding the bent steel plate to the outside and blocked state, forcing sand on both sides of the bent steel plate passing through the airtight case It is equipped with a surface treatment machine by installing the upper and lower sanding nozzles to eject and discharge the furnace, and prevents noise or fine iron powder and dust from occurring when both surfaces of the curved sheet are simultaneously surfaced. In addition, it prevents the occurrence of fire due to sparks when surface-treating curved steel sheets, and prevents the wear of components that surface-treated curved steel sheets, thus increasing the production of coated steel sheets per unit time without having to frequently change components during work. It will have the advantage of letting you.

Claims (7)

delete delete delete The iron plate supply means 100 for supplying the flat iron plate 1a and the flat iron plate 1a supplied from the iron plate supply means 100 are bent in the width direction to be bent and processed into the curved iron plate 1b. The surface treatment machine 300 for roughly treating both surfaces of the bending machine 1b processed through the molding machine 200, the bending molding machine 200, and the rough surface treatment via the surface treatment machine 300. A viscous resin applicator 400 for spraying and applying a viscous resin 1c on both sides of the curved iron plate 1b and a viscous resin applied to both sides of the bent steel sheet 1b via the viscous resin applicator 400. Heater 500 for heating (1c) to melt in a gel state, and coated resin (1d) on both sides of the flexible iron plate (1b) in which the adhesive resin (1c) was melted in gel state via the heater (500). In the coating device 600 is formed by coating the coated steel sheet 1 by coating the The surface treatment unit 300, Hermetically provided with a guide passage 20 having both guide rails 21 for guiding the curved iron plate 1b in a state of being blocked from the outside on the moving path of the curved iron plate 1b via the bending machine 200. With the case 10, A front and rear guide rollers 26 and 26 'installed up and down across the guide rails 21 at the lines and rear ends of the guide passage 20 to guide the curved iron plate 1b; The upper and lower sanding nozzles for roughly treating both surfaces of the curved iron plate 1b by forcibly discharging sand supplied separately on both sides of the curved iron plate 1b passing through the airtight case 10 as a set. 30), including 40, The guide passages 20 face each other at intervals on a path through which the bending machine 200 passes through the bending molding machine 200 so as to pass through the hermetic case 10 so as to extend forward and backward. 21, and the front and rear cover plates 22 and 22 'having air inlets 22a and 22a' integrally formed at the inlet and outlet sides of the guide rails 21 passing through the airtight case 10. To be covered up and down, and the front and rear air supply hoses 24 branched from the front and rear blower fans 23 and 23 ′ which are installed directly below the inlet and outlet sides of the guide rails 21. , 24 ') is installed by connecting the air outlets (22a, 22a') of the front and rear cover plates (22, 22 '), respectively. delete delete delete

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