KR100446939B1 - Apparatus for producing coated steel plate for plastic corrugated pipe - Google Patents

Abstract

The present invention enables the electrodeposited adhesive resin to be spray-coated to the pre-processed curved steel sheet to be firmly electrodeposited, so that the coating of synthetic resin spiral pipes can be obtained to obtain a high-quality coated steel sheet with a significant increase in the integrity between the curved steel sheet and the coated resin. It is to provide an iron sheet forming apparatus.

Coated iron sheet forming apparatus for a synthetic resin spiral tube of the present invention is a width of the iron plate supply means for supplying a flat iron plate (1a) having a predetermined width and the flat iron plate (1a) supplied from the iron plate supply means (10) Bending molding machine 20 to be bent in the direction to be processed to the bending iron plate (1b) and the adhesive resin (1c) by spray coating on both sides of the bending iron plate (1b) processed via the bending machine 20 A heater 50 for melting the gel in a gel state by heating the adhesive resin applicator 40 and the adhesive resin 1c coated on both sides of the curved iron plate 1b via the adhesive resin applicator 40. The coating machine 60 is formed by coating the coating resin 1d on both sides of the curved iron plate 1b in which the adhesive resin 1c is melted in a gel state via the heater 50 and forming the coated iron plate 1. In the configuration, between the bending molding machine 20 and the adhesive resin applicator 40, The scraper 30 having upper and lower rotary brushes 34 and 35 rotatably installed to scrape and roughen both surfaces of the curved iron plate 1b, which is bent from the bending machine 20, is disposed. will be.

Description

Apparatus for producing coated steel plate for plastic corrugated pipe}

The present invention is for molding a coated iron plate used as a material of a synthetic resin spiral tube, in particular a synthetic resin spiral to obtain a coated iron plate integrally bonded with a coating resin through the adhesive resin firmly electrodeposited to the curved iron sheet It relates to a conventional coated iron sheet forming apparatus.

Coated iron plate has been used as a material for manufacturing synthetic resin spiral pipes which are buried in the ground to pass water and sewage, and developed a coated steel sheet forming device for synthetic resin spiral pipes as a means for forming such coated steel sheets for synthetic resin spiral pipes. It is.

Conventional coated resin sheet forming apparatus for a synthetic resin spiral tube is iron plate supply means 110 for continuously supplying a flat iron plate 210 having a predetermined width, and from the iron plate supply means 110 Flexure bending machine 120 to be bent in the width direction to be supplied to the flat iron plate 210 to be processed to the bending iron plate 220, and the liquid phase on both sides of the bending iron plate 220 processed by the bending machine 120 Coated resin on the both sides of the adhesive resin applicator 130 for applying the adhesive resin 230 of the flexible iron plate 220 is coated with the liquid adhesive resin 230 via the adhesive resin applicator 130 It was composed of a coating machine 140 for coating the 240 to form a coated iron plate 200. The coated steel sheet forming apparatus 100 for the synthetic resin spiral tube is required as a material of the synthetic resin spiral tube by integrally bonding the coating resin 240 through the liquid adhesive resin 230 applied to both sides of the curved iron plate 220. Being able to form a coated iron plate 200 having corrosion resistance and structural strength.

However, the coated iron sheet 200 formed by the conventional coating resin sheet forming apparatus 100 for a synthetic resin spiral tube as shown in Figure 2, the liquid adhesive resin 230 is applied to both sides of the heterogeneous curved iron plate 220 ) Is not able to function properly and the material is easily separated together with the coating resin 240, which has serious consequences of greatly shortening the life of the synthetic resin spiral tube. That is, the liquid adhesive value 230 has a low affinity with the heterogeneous curved iron plate 220 due to its material properties, thereby maintaining a poor adhesive state, and has a high affinity with the coated resin 240 coated on the curved iron plate. Considering that it is to be maintained, after the construction or the completion of the construction of the synthetic resin spiral tube made of coated iron plate 200 is subjected to contraction or local impact and load due to the change in temperature, heterogeneous The adhesive resin 230 from the curved steel plate 220 of the adhesive resin 240 together with the coating resin 240, causing the phenomenon that is easily damaged as the material is separated, at this time moisture penetrates through the damaged site to corrode the curved steel plate 220 and Corrosion is gradually spread as the elapsed time, and as a result, the life span of the synthetic resin spiral tube manufactured by the coated iron plate 200 is greatly shortened, resulting in repair and replacement. Maintenance costs were accompanied by the problems raised.

The present invention enables to firmly electrodeposit the adhesive resin sprayed on the pre-processed curved steel sheet, thereby obtaining a high-quality coated steel sheet with a significant increase in the integrity of the curved steel sheet and the coated resin. An object is to provide an iron sheet forming apparatus.

1 is a schematic view showing a conventional coated iron sheet forming apparatus

2 is a cross-sectional view showing a state in which a coated steel sheet molded by a conventional coated steel sheet forming apparatus is used as a material of a synthetic spiral tube

Figure 3 is a schematic view showing the present invention coated iron sheet forming apparatus

Figure 4 shows a coated iron sheet formed as a coating iron sheet forming apparatus of the present invention

5 is a front view showing a scraper of the present invention coated iron sheet forming apparatus

Figure 6 is a front view showing a scraper of the coated steel sheet forming apparatus according to a modification of the present invention

Figure 7 shows a partial cutaway front view of the powder coating machine of the present invention coated iron sheet forming apparatus

Figure 8 is a partial cutaway front view of the heater of the present invention coated iron sheet forming apparatus

Figure 9 is a cross-sectional view showing the coating machine of the present invention coated iron sheet forming apparatus Figure 10 is a partial extract of the coated iron sheet forming apparatus according to another embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

10: iron plate supply means 11: drum 12: drum support

20: bending machine 21, 22: upper and lower rollers 30: scraper

31: support frame 32: drive shaft 33: linkage shaft

34, 35: upper and lower rotary brushes 36: motor 40: adhesive resin applicator

41: enclosure 42: guide rails 43, 44: upper and lower injection nozzles

50: heater 51: both support plates 52, 53: upper and lower heating nozzles

54, 55: gas supply pipe 60: coating machine 61: extrusion passage

70: auxiliary heater

The present invention also bends the iron plate supply means 10 for supplying the flat iron plate (1a) having a predetermined width and the flat iron plate (1a) supplied from the iron plate supply means 10 to bend in the width direction Adhesive resin applicator 40 for spray-coating adhesive resin 1c on both sides of the bending molding machine 20 to be processed by (1b) and the curved iron plate 1b processed via the bending molding machine 20. And a heater 50 for heating the adhesive resin 1c coated on both sides of the curved iron plate 1b through the adhesive resin applicator 40 and melting it in a gel state, and the heater 50 via the heater 50. In that the adhesive resin (1c) is coated with a coating resin (1d) on both sides of the curved iron sheet (1b) melted in a gel state and formed into a coated steel sheet (1) in the conventional Do the concepts together.

However, the coated steel sheet forming apparatus 100 for a synthetic resin spiral tube of the present invention is between the bending machine 20 and the adhesive resin applicator 40, of the bending iron plate (1b) to be bent from the bending machine 20 Technical features are characterized in that the scraper 30 having upper and lower rotating brushes 34 and 35 rotatably installed to scrape both surfaces and roughly surface the surface.

In other words, according to the present invention, as shown in FIGS. 3 and 4, both sides of the curved iron plate 1b processed by the bending machine 20 are scraped as the scraper 30 having the upper and lower rotary brushes 34 and 35. By roughly surface-treating, the adhesive resin 1c spray-coated in the adhesive resin applicator 40 is heated and melted by the heater 50 so as to be firmly electrodeposited on both sides of the curved iron plate 1b. Through (1c), it is possible to obtain a coated iron sheet 1 having increased integrity between the bent iron sheet 1b and the coated resin 1d.

As described above, after constructing or completing the construction of the synthetic resin spiral tube made of the coated iron sheet 1 obtained through the coated iron sheet forming apparatus 100 for the synthetic resin spiral tube of the present invention, the contraction action or the local Even when subjected to impacts and loads, the adhesive resin 1c with the coated resin 1d can be prevented from being damaged while the material is separated from the bent steel plate 1b, thereby extending the life of the synthetic resin spiral tube. It will have the advantage of greatly reducing the maintenance cost of replacement and repair.

In the drawings, reference numeral 300 denotes a coated steel sheet winding device.

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

Iron plate supply means 10 is a component that is located in the forefront to supply a flat iron plate (1a). The iron plate supply means (10) rotatably installs the drum (11) on which the flat iron plate (1a) is wound on the drum support (12), thereby releasing the flat iron plate (1a) wound on the drum (11). It is comprised so that it may supply to the bending molding machine 20 side.

The bending molding machine 20 is a component for processing the flat iron plate 1a to be bent in the width direction. The bending machine 20 has a plurality of upper and lower rollers 21 and 22 which are installed to be rotated as a curved cross section by receiving a driving force of a driving motor (not shown), from the iron plate supply means 10. It is configured to process the flat iron plate 1a, which is fed in between the upper and lower rollers 21 and 22, which are supplied and rotated, to be bent in the width direction to the curved iron plate 1b.

The scraper 30 is a component that roughly treats both surfaces of the curved iron plate 1b that is bent.

In the present invention, the scraper 30 is installed to rotate through the support frame 31, as shown in Figure 5, the drive shaft 32 and the drive gear 32a and the drive pulley 32b is installed, and The interlocking shaft 33 of the front and rear and the interlocking shaft 33 on which the interlocking gear 33a fitted with the driving gear 32a is installed to rotate through the support frame 31 at the upper portion of the driving shaft 32. An upper rotary brush (34) having a driven gear (34a) engaged with the interlocking gear (33a) of the crankshaft and having a bracket (34b) fitted to both ends of the interlocking shaft and rotatably installed; It is comprised as the lower rotating brush 35 which has the driven gear 35a meshed with the drive gear 32a, and has the bracket 35b which fits in the both ends of the drive shaft, and is rotatably installed. The scraper 30 is connected to the drive pulley 32b of the drive shaft 32 by connecting the belt 36a of the motor 36 installed at the lower portion of the support frame 31 to be operated by an external power source. 32, the upper and lower rotary brushes (34) and (35) are rotated to roughly treat both surfaces of the bent iron plate (1b) supplied while rotating, and then the adhesive resin (1c) which is spray-coated to the bent iron plate (1b). ) Can be melted and electrodeposited firmly.

In addition, the upper and lower rotary brushes 34 and 35 are planted in a cylindrical shape to bend the iron wires 34d and 35d along the circumference of the round bars 34c and 35c, and are supplied from the bending machine 20. Both surfaces of the curved iron plate (1b) to be rough surface treatment.

Here, the brackets 34b and 35b of the upper and lower rotary brushes 34 and 35 are fitted to flow at both ends of the drive shaft 32 and the linking shaft 33, respectively, and their respective upper and lower portions. The brackets 34b and 35b of the rotary brushes 34 and 35 are fitted to flow at both ends of the drive shaft 32 and the interlocking shaft 33 so as to be engaged with each other and installed on the outer surface of the support frame 31. As the levers 34f and 35f are installed so as to be integral with the position fixing wheels 34e and 35e intermittently interposed, the gap between the upper and lower rotary brushes 34 and 35 is adjusted to bend the steel plate at the correct position. It is preferable to allow both surfaces of 1b) to be roughened.

Figure 6 shows a scraper 30 of the coated sheet metal forming apparatus according to a modification of the present invention, it is installed to rotate through the front and rear of the support frame 31, the drive gear 32a and the drive pulley 32b, respectively Installed front and rear drive shafts 32 and interlocking gears 33a which are installed so as to rotate through the support frame 31 in front and rear on the drive shafts 32 and engaged with the drive gears 32a, respectively. A bracket 34b having front and rear interlocking shafts 33 and driven gears 34a engaged with the interlocking gears 33a of the front and rear interlocking shafts 33 and fitted to both ends of the interlocking shafts. Front and rear upper rotary brushes 34 rotatably installed, and driven gears 35a engaged with the drive gears 32a of the front and rear drive shafts 32 and fitted to both ends of the respective drive shafts. Front and rear lower rotation that is installed to be rotatable with the bracket (35b) It is configured as a rush (35). Such a scraper 30 is connected to the drive pulley 32b of the front and rear drive shafts 32 by connecting the belt 36a of the motor 36 installed at the lower portion of the support frame 31 and operated by an external power source. When the front and rear drive shafts 32 are rotated, the front and rear upper and lower rotary brushes 34 and 35 are rotated to more effectively roughen both surfaces of the curved iron plate 1b supplied.

The adhesive resin applicator 40 is a component for spraying and applying the adhesive resin 1c onto both surfaces of the curved iron plate 1b roughly treated.

In the present invention, the adhesive resin applicator 40 is a sealed box shape, as shown in Figure 7, the enclosure 41 having the entry and exit side passage 41a, 41b on the front and rear surfaces, and the enclosure Both side guide rails 42 horizontally installed to face each other to guide the curved iron plate 1b from the entry side passage 41a to the exit side passage 41b, and the middle of the both side guide rails 42 in the longitudinal direction. And upper and lower injection nozzles 43 and 44 which are provided at the upper and lower portions of the upper and lower parts of the upper and lower parts of the curved iron plate 1b to spray the adhesive resin of fine particles on both sides of the curved iron plate 1b. The adhesive resin applicator 40 extends from a separate adhesive resin supply container (not shown), and the adhesive resin supply lines 43a and 44a for supplying the adhesive resin 1c are the upper and lower injection nozzles. 43 and 44, the upper and lower injection nozzles 43 on both sides of the curved iron plate 1b while guiding the curved iron plate 1b, which are entered after rough surface treatment, as the two guide rails 42, respectively. (44), the adhesive resin 1c made of fine particles is applied.

The guide rails 42 are exposed to the outside by penetrating the entry and exit passages 41a and 41b of the housing 41, respectively, and the front and rear ends of the guide rails are respectively pedestal 42a. It is desirable to be firmly installed by supporting it. Here, by installing a plurality of departure preventing pieces (42b) at regular intervals in the longitudinal direction of the both side guide rails 42, to prevent the bent iron plate (1b) moving along the both side guide rails (42) arbitrarily separated Make sure to give it.

In addition, the upper and lower injection nozzles 43 and 44 are supported by the fixing hardware 43b and 44b respectively installed at the upper and lower portions of the enclosure 41 to be firmly installed.

The heater 50 is a component part which heats the adhesive resin spray-coated to both surfaces of the curved iron plate 1b. In the present invention, as shown in FIG. 8, the heater 50 is fixed to both side support plates 51 assembled to face each other as a plurality of assembling ring bars 51a at intervals, and is installed at upper and lower portions inside the both support plates 51. Upper and lower heating nozzles 52 and 53 installed on the round rods 52a and 53a, respectively, and a gas supply pipe 54 connected to the upper and lower heating nozzles 52 and 53, respectively, to supply gas. 55). The heater 50 is sprayed and coated on both sides of the curved iron plate 1b via the adhesive resin applicator 40 with heat emitted from the upper and lower heating nozzles 52 and 53. ) Is heated to allow the adhesive resin 1c to be electrodeposited on both sides of the curved iron plate 1b while melting in a gel state.

The coater 60 is a component that coats the coated resin 1d on both sides of the curved iron plate 1b to which the adhesive resin 1c is spray-coated on both sides. As shown in FIG. 9, the coating machine 60 is formed by a cylindrical body for assembling several molds to allow the curved iron plate 1b to pass therethrough, and extrudes the coated resin 1d in a bubble shape in the cross section. 61, which is coated by coating the coated resin 1d extruded from the extrusion passage 61 on both sides of the bent iron plate 1b on which the adhesive resin 1c is electrodeposited by being heated and melted by the heater 50. It is comprised so that the iron plate 1 may be shape | molded. Such a coating machine is the same as the configuration already described in detail in the specification that the applicant has adopted the "applicable sheet metal sheet for the pipe wall of synthetic resin spiral pipe" patented as patent No. 256451 (registered on February 22, 2000), the present invention In the following description, further description will be omitted.

On the other hand, Figure 10 shows another embodiment of the present invention, assists to heat both sides of the curved iron plate on the moving path between the scraper 30 and the adhesive resin applicator (40) 1b. By installing the heater 70, the curved iron plate (1b) having a rough surface treatment on both sides via the scraper 30 is heated to an appropriate temperature to remove foreign substances present on both sides of the curved iron plate (1b) At the same time, the adhesive resin sprayed from the adhesive resin applicator 40 is more reliably electrodeposited on both sides of the curved iron plate 1b. The auxiliary heater 70 is to be found to have the same configuration as the heater 50.

As described above, the present invention provides a coated steel sheet that is firmly bonded between the curved steel sheet and the coated resin through the adhesive resin firmly electrodeposited on both sides of the curved steel sheet roughly surface treated by scraping with a scraper. In addition, it is a useful invention that can reduce the maintenance cost by extending the service life of the synthetic resin spiral tube manufactured using this coated iron sheet as a material.

Claims (8)

The iron plate supply means 10 for supplying the flat iron plate 1a having a predetermined width and the flat iron plate 1a supplied from the iron plate supply means 10 are bent in the width direction to bend the iron plate 1b. Adhesive resin applicator 40 for spray-coating the adhesive resin 1c on both sides of the bending molding machine 20 and the bending iron plate 1b processed via the bending molding machine 20, A heater 50 for heating the adhesive resin 1c coated on both sides of the curved iron plate 1b via the adhesive resin applicator 40 to melt in a gel state, and the adhesive resin via the heater 50. (1c) consists of a coater (60) which coats the coated resin (1d) on both surfaces of the curved iron sheet (1b) melted in a gel state and forms the coated iron sheet (1). Upper and lower rotations between the flexure molding machine 20 and the adhesive resin applicator 40 are rotatably installed on the both sides of the curved iron plate 1b that is flexibly processed from the flexure molding machine 20 to roughly process the surface. Apparatus for forming a coated spiral plate for a synthetic resin spiral tube, characterized in that the scraper (30) having a brush (34) (35) is disposed. delete According to claim 1, wherein the scraper 30 is installed so as to rotate through the front and rear of the support frame 31 and the front and rear drive shafts 32, each of which the drive gear 32a and the drive pulley 32b is installed, Interlocking shafts 33 of the front and rear sides are installed so as to rotate through the support frame 31 in the front and rear on the top of the drive shaft 32, and the interlocking gear 33a is meshed with the drive gear 32a, respectively; Front and rear upper rotating brushes installed to be rotatable by having a driven gear 34a engaged with the interlocking gears 33a of the front and rear interlocking shafts 33 and having brackets 34b fitted to both ends of the interlocking shafts. (34) and a driven gear (35a) to be engaged with the drive gear (32a) of the front and rear drive shafts 32 and having a bracket (35b) fitted to both ends of the respective drive shaft is installed rotatably Synthesis characterized by being configured as front and rear lower rotating brushes 35 Through line tolerance coated iron plate forming device. The pressure-sensitive adhesive applicator (40) according to claim 1, wherein the adhesive resin applicator (40) has a sealed box shape and has an entrance side and an exit side passage (41a, 41b) on its front and rear surfaces, and an entry side passage of the enclosure ( It is provided in the upper and lower portions of the two side guide rails (42) which are horizontally installed to face each other to guide the curved iron plate (1b) from 41a) through the outlet side passage (41b), Apparatus for forming a coated steel sheet for a synthetic resin spiral pipe, characterized in that the upper and lower injection nozzles (43) (44) for spraying the adhesive resin of the fine particles on both sides of the curved iron plate (1b) moving along the guide rail. delete delete According to claim 1, wherein the heater (50) is spaced apart at both sides of the support plate 51 is assembled to face as a plurality of assembling ring rod (51a), and the fixed ring rod (52a) provided in the upper and lower portions inside the both support plate 51 Gas supply pipes 54 and 55 connected to the upper and lower heating nozzles 52 and 53 respectively installed on the 53a and the upper and lower heating nozzles 52 and 53 to supply gas. Coated iron sheet forming apparatus for a synthetic resin spiral tube, characterized in that configured as. delete