KR102260174B1 - After treatment apparatus for coated steel reinforcement - Google Patents

Abstract

In an embodiment of the present invention, the apparatus for post-treatment of reinforcing bars is coated with rebar having a coating film formed on the surface thereof; a housing that forms an exterior and has a water storage tank at the lower side; a first conveying roller provided inside the housing and conveying the painted reinforcing bar in the longitudinal direction; a cooling water spray nozzle provided on the upper side of the housing and disposed in the longitudinal direction of the painted reinforcing bar to spray cooling water to the painted reinforcing bar; a first pump having one end connected to the water storage tank and the other end connected to the cooling module; a second pump having one end connected to the cooling module and the other end connected to the cooling water injection nozzle; and a drying device for drying the painted reinforcing bars to which the cooling water is sprayed.

Description

After treatment apparatus for coated steel reinforcement

The present invention relates to an apparatus for post-treatment of painted reinforcing bars, and relates to a post-treatment apparatus for painted reinforcing bars capable of increasing the cooling efficiency and drying efficiency of painted reinforcing bars to produce high-quality painted reinforcing bars and improving the production speed of painted reinforcing bars. .

Coated steel reinforcement is a reinforcing bar with a coating film formed on the surface of the reinforcement by applying a powder epoxy resin to the reinforcement, and the coating film formed on the surface blocks contact with moisture or oxygen in the air to prevent rust.

Painted reinforcing bar is a short process of shot blasting the received rebar, a heating process of heating the rebar over a certain temperature with high-frequency fluid heating, a painting process of applying powder epoxy to the reinforcing bar to form a film on the surface of the reinforcing bar, It is manufactured in the following order: a curing process in which the coating film is hardened by air cooling for a certain period of time, a cooling process in which cooling water is sprayed to the reinforcing bar with hardened coating film to cool, and a drying process in which the cooling water is removed and dried by spraying dry air on the rebar. Here, the cooling process and drying process of the manufacturing process of the painted reinforcing bar are referred to as a post-treatment process, and a device performing the cooling process and the drying process is referred to as a post-treatment device.

In the surface of the painted reinforcing bar 1 manufactured through the above-described process, pinholes such as those shown in FIG. 1 are found, and these pinholes (h) are not sufficiently sprayed with cooling water in the cooling process after the hardening process or are cooled. If the cooling rate is slow and the cooling is not good, gas may be generated and discharged from the coating film.

Since the painted reinforcing bars having more than a certain number of pinholes (h) are treated as defective products, the occurrence of pinholes (h) is prevented when the reinforcing bars with the coating film are sufficiently cooled in the cooling process. However, when cooling for a long time for sufficient cooling, the production rate of the painted reinforcing bars decreases. Therefore, it is necessary to develop a post-processing apparatus for the coated rebar with an improved production rate while sufficiently cooling the rebar.

On the other hand, the painted rebar after the cooling process is dried through a drying process. In the drying process, the cooling water (w) is dried or dropped by spraying dry air to the painted reinforcing bars.

As the reinforcing bar of the painted reinforcing bar 1, as shown in FIG. 1 , a deformed bar with irregularities formed on the surface of the columnar reinforcing bar to improve the adhesion strength of concrete is mainly used. In this case, the rib (r) is formed in the longitudinal direction, and a plurality of nodes (n) are formed to protrude from the outer peripheral surface in the radial direction.

In this case, some of the cooling water is disposed in the gap between the ribs r or the nodes n, so even if dry air is sprayed in the drying process, the cooling water w is not easily dried or dropped off, and the ribs r Or it remains in the gap between the nodes (n), thereby reducing drying efficiency and drying quality.

In addition, cooling water may be adsorbed to the pinholes h partially generated after the cooling process. In this case, since the surface of the reinforcing bar is exposed in the pinhole h, the adsorbed cooling water may come into contact with the surface of the reinforcing bar, and thus rust may occur in the reinforcing bar.

In particular, when the painted reinforcing bar is implemented as a deformed reinforcing bar, the rib (r) or node (n) functions to shield the dry air even when dry air is sprayed, so that the cooling water adsorbed to the pinhole (h) does not easily fall off. won't

In the drying process, painted reinforcing bars are generally dried while being transported at a speed of 1 m/min. At this speed, the residual amount of cooling water is about 20%. Here, if the speed is increased, the residual amount of cooling water is increased. Conversely, if the feed rate of the painted reinforcing bar is reduced to reduce the residual amount of cooling water, the production speed is lowered.

Therefore, it is necessary to develop a post-treatment device for coated rebar that can effectively remove cooling water to improve the drying efficiency and drying quality of the coated reinforcing bar, while performing the drying process at a high speed to improve the production speed.

The problem to be solved by the present invention is to provide a post-processing apparatus for painted reinforcing bars capable of manufacturing high-quality painted reinforcing bars by increasing the cooling efficiency and drying efficiency of the painted reinforcing bars formed with a coating film, and improving the production speed of the painted reinforcing bars.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

A post-treatment apparatus for reinforcing steel coated in accordance with an embodiment of the present invention for solving the above problems includes: reinforcing bars having a coating film formed on the surface; a housing that forms an exterior and has a water storage tank at the lower side; a first conveying roller provided inside the housing and conveying the painted reinforcing bar in the longitudinal direction; a cooling water spray nozzle provided on the upper side of the housing and disposed in the longitudinal direction of the painted reinforcing bar to spray cooling water to the painted reinforcing bar; a first pump having one end connected to the water storage tank and the other end connected to the cooling module; a second pump having one end connected to the cooling module and the other end connected to the cooling water injection nozzle; and a drying device for drying the painted reinforcing bars to which the cooling water is sprayed. Includes.

In addition, in the first transfer roller, a seating portion on which the painted reinforcing bar is seated is formed to be spaced apart from each other at regular intervals along the longitudinal direction of the first transfer roller, and the coolant spray nozzle is disposed on the upper side of the seating portion to alternate with the seating portion. can be

In addition, the cooling water jet nozzle may be provided with a jet head for jetting the cooling water to the painted reinforcing bar, and the cooling water jet angle of the jet head may be implemented in a range of 80° to 110°.

In addition, the drying apparatus, an upper frame forming an exterior; a second conveying roller provided on the lower side of the upper frame and conveying the painted reinforcing bar to which the cooling water is sprayed; a moving module provided on the upper side of the upper frame and moving in the longitudinal direction of the painted reinforcing bar; and a drying module rotatably provided in the moving module and spraying dry air to the painted reinforcing bars to remove the cooling water of the painted reinforcing bars. It may include.

In addition, the moving module may include: a movement control motor fixedly provided on the upper side of the upper frame; a moving frame provided with the drying module and moving in the longitudinal direction of the painted reinforcing bar; and a screw shaft having one end coupled to the movement control motor and passing through the moving frame to move the moving frame in the longitudinal direction of the painted reinforcing bar when the movement control motor rotates. It may include.

In addition, the moving module may include an LM guide provided between the upper frame and the moving frame.

In addition, the drying module, the support rod provided on the inside of the moving frame; a first rotation control motor provided at one end of the moving frame to rotate the support rod; a connecting rod connected to the support rod; and an air knife provided at an end of the connecting rod to spray dry air to the painted reinforcing bar; It may include.

In addition, the drying module may include a second rotation control motor provided between the connecting rod and the air knife to rotate the air knife.

In addition, the first rotation control motor may rotate the support rod so that the connecting rod and the painted reinforcing bar form an acute angle.

In addition, at least one pair of air knives may be provided in the drying module, and the second rotation control motor may rotate each of the air knives so that the pair of air knives form a pier with each other.

Details of other embodiments are included in the detailed description and drawings.

According to the post-processing apparatus for painted reinforcing bars according to an embodiment of the present invention, since the spraying heads are arranged to cross each other with the painted reinforcing bars, the cooling water sprayed from the spraying heads in a certain angle range cools the side surfaces of the painted rebars to achieve cooling efficiency and cooling rate is improved, and finally the production speed is improved.

As the first rotation control motor rotates the support rod and the connecting rod forms an acute angle with the painted reinforcing bar, dry air is sprayed to the cooling water remaining in the rib of the painted reinforcing bar in an inclined direction, so that the cooling water is easily removed, drying efficiency And the drying quality is improved, and finally the drying speed is increased, so that the production speed is improved.

The second rotation control motor rotates a pair of air knives to form a pier with each other, and dry air is sprayed in an inclined direction to the coolant remaining on the ribs of the painted reinforcing bar, so that the coolant is easily removed, so that the drying efficiency and The drying quality is improved and finally the drying speed is increased, thereby increasing the production speed.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the description of the claims.

1 is an embodiment of a coated reinforcing bar in which a coating film is formed on a deformed reinforcing bar.
Figure 2 is a plan view of the cooling device of the post-treatment apparatus for reinforcing paint according to an embodiment of the present invention.
Figure 3 is a front view of the cooling device of the post-processing apparatus for reinforcing coating according to an embodiment of the present invention.
4 is an enlarged view of the first transfer roller 170 and the coolant spray nozzle 120 according to an embodiment of the present invention.
5 is a perspective view of a drying apparatus of a post-processing apparatus for painted reinforcing bars according to an embodiment of the present invention.
6 is a side view of a drying apparatus of a post-treatment apparatus for painted reinforcing bars according to an embodiment of the present invention.
7 is a view exemplarily illustrating a state in which the first rotation control motor 243 rotates the support rod 241, and the air knife 247 forms a predetermined angle on the painted reinforcing bar to spray dry air.
8 is a view illustrating a state in which the second rotation control motor 249 rotates the air knife 247, and the air knife 247 forms various angles on the upper side of the painted reinforcing bar to spray dry air. to be.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Even if the terms are the same, if the indicated parts are different, it is to be said in advance that the reference numerals do not match.

And the terms to be described later are terms set in consideration of functions in the present invention, which may vary according to the intentions or customs of operators such as experimenters and measurers, and thus definitions should be made based on the content throughout this specification.

In this specification, terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

In addition, when a part "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail. Like reference numerals in each figure indicate like elements.

2 is a plan view of a cooling device of a post-treatment device for painted reinforcing bars according to an embodiment of the present invention, FIG. 3 is a front view of a cooling device for a post-treatment device for painted rebar according to an embodiment of the present invention, and FIG. It is an enlarged view of the first transfer roller 170 and the coolant spray nozzle 120 according to an embodiment of the present invention.

Hereinafter, with reference to FIGS. 2 to 4, a post-processing apparatus for reinforcing paint according to an embodiment of the present invention will be described.

First, the painted reinforcing bar is manufactured in the order of a short process, a heating process, a painting process, a hardening process, a cooling process, and a drying process, as described above in the prior art. Here, the cooling process and drying process of the manufacturing process of the painted rebar are called post-treatment processes, and the device performing the post-treatment process is called the post-treatment device of the painted rebar.

The apparatus for post-treatment of painted reinforcing bars according to an embodiment of the present invention includes a cooling device for cooling the coated reinforcing bars by spraying cooling water, and a drying device for drying the coated rebar with the cooling water sprayed.

First, referring to FIGS. 2 to 4 , the cooling device according to an embodiment of the present invention forms a painted reinforcing bar 1 having a coating film on its surface, an exterior, and a housing 110 having a water storage tank 160 at the lower side. , a first transfer roller 170 provided inside the housing 110 and transporting the painted reinforcing bar 1 in the longitudinal direction, provided on the upper side of the housing 110 and arranged in the longitudinal direction of the painted reinforcing bar 1 (1) a coolant spray nozzle 120 for spraying cooling water, one end connected to the water storage tank 160 and the other end connected to the cooling module 140, the first pump 131, one end connected to the cooling module 140 and a second pump 133 having the other end connected to the coolant injection nozzle 120 .

The painted reinforcing bar 1 according to an embodiment of the present invention is a reinforcing bar in which a coating film is formed on the surface of the reinforcing bar through a painting process. The painted reinforcing bar 1 is in a state that has undergone a hardening process in which the coated rebar 1 is air-cooled for a certain period of time to harden the coated rebar.

The painted reinforcing bar 1 may be implemented as a general reinforcing bar or a deformed bar. As described above, the deformed reinforcing bar is a reinforcing bar in which irregularities are formed on the surface of the columnar reinforcing bar, ribs (r) are formed in the longitudinal direction, and a plurality of nodes (n) are formed to protrude from the outer circumferential surface in the radial direction. Hereinafter, the painted reinforcing bar 1 according to an embodiment of the present invention will be described as being implemented as a deformed reinforcing bar, but the embodiment is not limited thereto.

The housing 110 forms an exterior. A water storage tank 160 in which cooling water is stored is provided at a lower side of the housing 110 .

The first transfer roller 170 is provided inside the housing 110 . The first transfer roller 170 is rotatably provided. The first transfer roller 170 transfers the painted reinforcing bar 1 in the longitudinal direction of the painted reinforcing bar 1 . The first transfer roller 170 may continuously transfer the painted reinforcing bars 1 that are continuously drawn in in the longitudinal direction of the painted reinforcing bars 1 .

The coolant spray nozzle 120 sprays coolant to the painted reinforcing bar (1). The coolant spray nozzle 120 is provided on the upper side of the housing 110 . The coolant spray nozzle 120 is provided on the upper side of the first transfer roller 170 . The cooling water spray nozzle 120 may be provided on the upper side of the painted reinforcing bar (1).

A plurality of coolant spray nozzles 120 may be provided. In this case, the cooling water injection nozzles 120 may be respectively connected to the distribution pipe 121 to receive cooling water.

The cooling water spray nozzle 120 is disposed in the longitudinal direction of the painted reinforcing bar (1). As shown in FIG. 2 , the cooling water spray nozzle 120 is disposed along the painted reinforcing bar 1 , and sprays the cooling water to the painted reinforcing bars 1 continuously introduced into the housing 110 .

When cooling water is sprayed on the painted reinforcing bar 1 from the cooling water spray nozzle 120, the painted reinforcing bar 1 is cooled by the cooling water. After cooling the painted reinforcing bar (1), the cooling water is stored in the water storage tank (160) together with the foreign substances on the surface of the painted reinforcing bar (1). In this case, the coolant is stored at a higher temperature than when it is sprayed from the coolant spray nozzle 120 .

The first pump 131 has one end connected to the water storage tank 160 and the other end connected to the cooling module 140 . The first pump 131 pumps the coolant stored in the water storage tank 160 and delivers it to the external cooling module 140 .

The cooling module 140 is provided outside the housing 110 . The cooling module 140 according to an embodiment of the present invention includes a cooling tower 141 for cooling the cooling water received from the first pump 131 , and a cooling water tank 143 for storing the cooling water cooled in the cooling tower 141 . includes The cooling water is transferred to the cooling tower 141 by the first pump 131 and cooled, and then stored in the cooling water tank 143 .

The second pump 133 has one end connected to the cooling module 140 and the other end connected to the cooling water injection nozzle 120 . The second pump 133 pumps the coolant cooled by the cooling module 140 and delivers it to the coolant spray nozzle 120 . According to an embodiment of the present invention, one end of the second pump 133 is connected to the coolant tank 143 , and delivers the coolant stored in the coolant tank 143 to the coolant spray nozzle 120 . According to an embodiment, when the plurality of coolant injection nozzles 120 are connected to the distribution pipe 121 , the other end of the second pump 133 may be connected to the distribution pipe 121 .

A filter module 150 may be provided between the second pump 133 and the coolant tank 143 . That is, the cooling water stored in the water storage tank 160 together with the foreign substances on the surface of the painted reinforcing bar 1 is transferred to the cooling tower 141 by the first pump 131 and then cooled and stored in the cooling water tank 143. , this coolant may contain foreign substances.

In this case, when the second pump 133 pumps the coolant from the coolant tank 143 and delivers it to the coolant spray nozzle 120 , the filter module 150 filters foreign substances from the coolant transferred from the coolant tank 143 . Accordingly, foreign substances are not transferred to the inside of the second pump 133 and to the cooling water injection nozzle 120 , so that the failure of the second pump 133 is prevented, and foreign substances are not transferred to the coolant sprayed from the cooling water injection nozzle 120 . Not included, the coating quality of the painted reinforcing bar (1) is improved.

The first transfer roller 170 has a seating portion 171 on which the painted reinforcing bar 1 is seated, as shown in FIG. 4 . The seating portion 171 is formed by being depressed so that the painted reinforcing bar 1 is seated. A plurality of mounting portions 171 may be formed. In this case, the seating portions 171 are formed to be spaced apart from each other at regular intervals along the longitudinal direction of the first transfer roller 170 . Accordingly, the painted reinforcing bar 1 may be disposed to be spaced apart from each other on the seating portion 171 .

The coolant spray nozzle 120 may be disposed above the seating part 171 . In this case, the coolant injection nozzle 120 may be disposed at a position deviated from the vertical position from the seating portion 171 . That is, as shown in FIG. 4 , the cooling water injection nozzles 120 may be disposed to cross each other with the seating part 171 . Accordingly, the cooling water spray nozzle 120 may be disposed on the upper side of the painted reinforcing bar 1 , alternately with the painted reinforcing bar 1 .

The coolant spray nozzle 120 may be provided with a spray head 123 for spraying the coolant to the painted reinforcing bar 1 . A plurality of injection heads 123 may be disposed along the coolant injection nozzle 120 .

The injection head 123 sprays the coolant. The jet head 123 jets the coolant within a predetermined angle range. In this case, a predetermined angle range in which the jet head 123 sprays the coolant is defined as the coolant spray angle α.

When the coolant is sprayed from the spray head 123, the painted reinforcing bar 1 disposed on the lower side is cooled by the coolant. According to an embodiment of the present invention, since the spraying head 123 is disposed to cross each other with the painted reinforcing bar 1, the coolant sprayed from the spraying head 123 at a certain angle can cool the side surface of the painted reinforcing bar. In this case, since cooling water is sprayed on the side surfaces of the two painted reinforcing bars 1 from one injection head 123 to cool the painted reinforcing bars 1, cooling efficiency and cooling rate can be improved.

If the cooling water is sprayed from the upper side of the painted reinforcing bar 1 in the vertical direction, the cooling water is in contact only with the upper surface of the painted reinforcing bar 1, and the cooling water is not in contact with the side of the painted reinforcing bar 1, or is in contact with the upper surface Since only some of the cooling water whose temperature has risen due to the contact is made, cooling is difficult.

Accordingly, cooling is not performed sufficiently on the side of the painted reinforcing bar (1), and pinholes (h) may occur, and if cooling water is sprayed for a long time to sufficiently flow the cooling water to the side of the painted reinforcing bar (1), the cooling rate is reduced This will reduce the production rate.

In particular, when the painted reinforcing bar 1 is implemented as a deformed reinforcing bar according to an embodiment of the present invention, a rib (r) is formed on the side of the deformed reinforcing bar. By shielding the cooling water sprayed from the, the lower side of the painted reinforcing bar may not be sufficiently cooled.

The coolant spray nozzle 120 according to an embodiment of the present invention is disposed to be crossed with the seating part 171 and disposed to be crossed with the painted reinforcing bar 1, and the spray head 123 sprays the coolant in a certain angle range. , to improve cooling efficiency and cooling rate by cooling the side surface of the painted reinforcing bar (1). Accordingly, the occurrence of pinholes (h) of the painted reinforcing bar 1 is suppressed and the production speed is improved.

The coolant spraying angle α of the spraying head 123 according to an embodiment of the present invention may be implemented in a range of 80° to 110°. In this case, the coolant spray nozzle 120 may spray coolant from the upper surface of the painted reinforcing bar 1 to the side. In particular, it has the best cooling efficiency and cooling rate when the cooling water injection angle α is 95°.

5 is a perspective view of a drying apparatus of a post-processing apparatus for painted reinforcing bars according to an embodiment of the present invention, FIG. 6 is a side view of a drying apparatus of a post-treatment apparatus for painted reinforcing bars according to an embodiment of the present invention, and FIG. One rotation control motor 243 rotates the support rod 241, the air knife 247 is a view exemplarily showing a state in which the air knife 247 forms a predetermined angle to the painted reinforcing bar and sprays dry air. The two-rotation control motor 249 rotates the air knife 247, and the air knife 247 exemplarily shows a state in which the air knife 247 forms various angles on the upper side of the painted reinforcing bar and sprays dry air.

Hereinafter, a drying apparatus according to an embodiment of the present invention will be described with reference to FIGS. 5 to 8 .

5 to 8, the drying apparatus according to an embodiment of the present invention includes an upper frame 211 that forms an exterior, a painted reinforcing bar 1 provided under the upper frame 211 and sprayed with cooling water. The second transfer roller 220 for transporting, a moving module provided on the upper side of the upper frame 211 and moving in the longitudinal direction of the painted reinforcing bar 1, and a moving module rotatably provided on the moving module and dried on the painted reinforcing bar 1 It includes a drying module for removing the cooling water of the painted reinforcing bar (1) by spraying air.

The upper frame 211 and the support frame 213 form the exterior of the drying device. The upper frame 211 and the support frame 213 form an inlet (i) through which the painted reinforcing bars are introduced and an outlet (e) through which the painted reinforcing bars (1) are discharged.

The upper frame 211 is provided on the upper side of the painted reinforcing bar (1). A water storage tank 250 is provided at the lower side of the support frame 213 for storing cooling water dropped from the painted reinforcing bar 1 by a drying module to be described later.

The second transfer roller 220 is provided on the lower side of the upper frame 211 . The second transfer roller 220 may be provided on the upper side of the water storage tank 250 . The second transfer roller 220 is rotatably provided. The second transfer roller 220 transfers the painted reinforcing bar 1 to which the cooling water is sprayed in the longitudinal direction of the painted reinforcing bar 1 . The second conveying roller 220 may continuously convey the painted reinforcing bars 1 that are continuously introduced.

The moving module is provided on the upper side of the upper frame 211 . The moving module can move in the longitudinal direction of the painted reinforcing bar (1). In this case, the moving module can move in the front-rear direction along the longitudinal direction of the painted reinforcing bar (1). The mobile module will be described later.

The drying module is rotatably provided on the moving module. The drying module may be provided on the upper side of the painted reinforcing bar (1). The drying module sprays dry air to the painted reinforcing bar (1). In this case, a first air pump P1 for supplying dry air to the drying module may be connected to the drying module. The drying module sprays dry air on the painted reinforcing bar (1) to dry or drop off the cooling water of the painted rebar to remove it. The drying module will be described later.

Hereinafter, a detailed structure of the mobile module will be described.

The moving module according to an embodiment of the present invention includes a moving control motor 231 fixed to the upper side of the upper frame 211, a drying module provided, and a moving frame 233 moving in the longitudinal direction of the painted reinforcing bar (1). ), and a screw having one end coupled to the movement control motor 231 and passing through the movement frame 233 to move the movement frame 233 in the longitudinal direction of the painted reinforcing bar 1 when the movement control motor 231 rotates. shaft 235 .

The movement control motor 231 is fixedly provided on the upper side of the upper frame 211 . The movement control motor 231 may be driven according to a control signal of a controller (not shown). The movement control motor 231 may be implemented as a servo motor, but the embodiment is not limited thereto.

The moving frame 233 is movably provided on the upper side of the upper frame 211 . The moving frame 233 is provided with a drying module. The moving frame 233 may move in the longitudinal direction of the painted reinforcing bar (1). The moving frame 233 may be disposed perpendicular to the longitudinal direction of the painted reinforcing bar (1).

One end of the screw shaft 235 is coupled to the movement control motor 231 . The screw shaft 235 is disposed through the moving frame 233 . The screw shaft 235 and the moving frame 233 may be implemented as a ball screw system. In this case, the moving frame 233 may be provided with a nut cap (not shown) passing through the screw shaft 235 .

When the movement control motor 231 rotates, the screw shaft 235 is rotated to move the moving frame 233 in the longitudinal direction of the painted reinforcing bar 1 . An end cap 237 for supporting the other end of the screw shaft 235 may be provided at the other end of the screw shaft 235 .

The moving module may include an LM guide 239 (LM guide) provided between the upper frame 211 and the moving frame 233 . The LM guide 239 allows the moving frame 233 to slide along the upper frame 211 . The LM guide 239 may be provided on both sides of the moving frame 233 .

Hereinafter, the detailed structure of the drying module will be described.

The drying module according to an embodiment of the present invention includes a support rod 241 provided inside the moving frame 233 , and a first rotation provided at one end of the moving frame 233 to rotate the support rod 241 . It includes a control motor 243, a connection rod 245 connected to the support rod 241, and an air knife 247 which is provided at the end of the connection rod 245 to spray dry air to the painted reinforcing bar (1). .

The support rod 241 is provided inside the moving frame 233 . The support rod 241 may be disposed in the same direction as the moving frame 233 . The support rod 241 is rotatably provided on the moving frame 233 .

The first rotation control motor 243 is provided at one end of the moving frame 233 . The first rotation control motor 243 rotates the support rod 241 based on the central axis of the support rod 241 . The first rotation control motor 243 may rotate the support rod 241 within a predetermined angle range.

When the first rotation control motor 243 is driven to rotate the support rod 241 , the angle formed by the connecting rod 245 and the painted reinforcing bar 1 is changed as shown in FIG. 7 . In this case, the angle formed by the air knife 247 and the painted reinforcing bar 1 is changed, and the spraying angle of the dry air may be changed.

The first rotation control motor 243 may be implemented as a servo motor, but the embodiment is not limited thereto. The rotation angle range of the first rotation control motor 243 may be controlled according to a control signal of a controller (not shown).

The connecting rod 245 is connected to the support rod 241 . One end of the connecting rod 245 is coupled to the support rod 241 , and the other end is connected to an air knife 247 to be described later. The connecting rod 245 is coupled to the air knife 247 so that the air knife 247 rotates together with the support rod 241 when the support rod 241 rotates.

The air knife 247 is provided at the end of the connecting rod 245 . The air knife 247 may be provided at the other end of the connecting rod 245 . The air knife 247 sprays dry air to the painted reinforcing bar (1). In this case, the first air pump P1 for supplying dry air to the air knife 247 may be connected to the air knife 247 .

The drying module includes a second rotation control motor 249 . The second rotation control motor 249 is provided between the connecting rod 245 and the air knife 247 . The second rotation control boat may rotate the air knife 247 within a predetermined angular range with respect to the central axis of the connecting rod 245 .

When the second rotation control motor 249 is driven to rotate the air knife 247, the angle formed by the air knife 247 and the painting reinforcing bar 1 is changed as shown in FIG. In this case, the angle formed by the longitudinal direction of the air knife 247 and the painted reinforcing bar 1 may be changed.

The second rotation control motor 249 may be implemented as a servo motor, but the embodiment is not limited thereto. The rotation angle range of the second rotation control motor 249 may be controlled according to a control signal from the controller.

At least one pair of air knives 247 may be provided according to embodiments. In this case, at least one pair of connecting rods 245 may be provided on the support rod 241 , and a second rotation control motor 249 may be provided between the connecting rod 245 and the air knife 247 , respectively.

An annular air blower 260 may be provided around the vicinity of the discharge part (e). The annular air blower 260 may be fixed to the support frame 213 or the water storage tank 250 . Annular air blower 260 is formed in a semi-circular shape, an opening is formed therein. The painted reinforcing bar (1) is penetrated through the opening.

Annular air blower 260 sprays dry air in the direction of the opening. The annular air blower 260 finally removes the cooling water by spraying dry air in a state adjacent to the painted reinforcing bar 1 . A second air pump P2 for supplying dry air to the annular air blower 260 may be connected to the annular air blower 260 .

Hereinafter, an operation of the drying apparatus will be described with reference to FIGS. 7 to 8 .

First, depending on the type, thickness, and type of the coating film, dry air is quickly sprayed first after the cooling process to improve the quality of the painted reinforcing bar 1, or it is sprayed after a certain time delay.

In this case, the moving frame 233 moves forward and backward with respect to the longitudinal direction of the painted reinforcing bar 1 to move the drying module forward and backward, so that the dry air can be sprayed onto the painted reinforcing bar 1 first or later. In (a) of FIG. 8, an embodiment in which the moving frame 233 is moved in the longitudinal direction of the painted reinforcing bar and the air knife 247 is moved is shown by dotted lines and solid lines.

That is, when dry air needs to be sprayed quickly after the cooling process, the control unit rotates the movement control motor 231 by the user's input, and moves the frame 233 to the inlet (i) of the painted reinforcing bar (1). advance to approach. In this case, the drying module is arranged to approach the inlet (i) of the painted reinforcing bar (1). Accordingly, as soon as the painted reinforcing bar 1 is drawn into the inlet (i) of the drying device, the dry air can be immediately sprayed onto the painted reinforcing bar 1 by the drying module.

Conversely, when the drying air needs to be sprayed with a delay of a certain time after the cooling process, the control unit rotates the movement control motor 231 by the user's input and moves the moving frame 233 to the discharge part (e) of the painted reinforcing bar (1). ) to be approached. In this case, the drying module is arranged to approach the discharge part (e) of the painted reinforcing bar (1). Accordingly, the painted reinforcing bar (1) is delayed for a certain time while moving from the inlet (i) to the outlet (e) of the drying device, and then dry air can be sprayed to the painted reinforcing bar (1) by the drying module. have.

Meanwhile, with reference to FIG. 7 , the first rotation control motor 243 rotates the support rod 241 to form an acute angle between the connecting rod 245 and the painted reinforcing bar 1 will be described.

First, the state of Figure 7 (a) is a state in which the painted reinforcing bar 1 and the connecting rod 245 are vertically arranged. In this case, the dry air sprayed from the air knife 247 is sprayed perpendicular to the surface of the painted reinforcing bar (1).

Here, when the painted reinforcing bar 1 is implemented as a deformed reinforcing bar, some cooling water w among the cooling water sprayed on the painted reinforcing bar 1 may be disposed in the gap between the ribs (r) or nodes (n) of the painted reinforcing bar. and some cooling water may be adsorbed to the generated pinhole h.

In this case, the cooling water (w) remaining in the gap between the ribs (r) or the nodes (n) of the painted reinforcing bar (1) is dried in which the ribs (r) prevent the cooling water (w) from falling off and are sprayed in the vertical direction. It may remain in the painted reinforcing bar (1) without being dropped by air. In addition, the cooling water adsorbed to the pinhole h may remain in the pinhole h by resisting the vertical direction without being dropped by the dry air sprayed in the vertical direction.

Therefore, in order to effectively improve drying efficiency and drying quality, the first rotation control motor 243 according to an embodiment of the present invention rotates the support rod 241 so that the connecting rod 245 and the painted reinforcing bar 1 have an acute angle. to form In this case, the air knife 247 and the painted reinforcing bar 1 form an acute angle.

That is, the first rotation control motor 243 rotates the support rod 241 by a predetermined angle according to the control signal of the controller. The first rotation control motor 243 rotates the support rod 241 so that the connecting rod 245 and the air knife 247 are positioned in the state of (b) or (c) of FIG. 7 . In this case, the connecting rod 245 forms an acute angle that is not parallel or perpendicular to the painted reinforcing bar. Here, the acute angle refers to the smaller of the angles formed by the connecting rod 245 and the painted reinforcing bars.

When the connecting rod 245 and the painted reinforcing bar 1 form an acute angle, the spraying angle of the dry air of the air knife 247 also forms an acute angle with the painted reinforcing bar 1 . In this case, dry air is sprayed in an inclined direction rather than in a direction perpendicular to the coolant remaining on the rib (r) of the painted reinforcing bar (1).

Accordingly, the cooling water is not supported by the rib (r) and is removed from the surface of the painted reinforcing bar (1) after it is moved laterally. Similarly, the cooling water adsorbed to the pinhole h is also removed from the pinhole h by the dry air sprayed in an inclined direction. The dropped cooling water falls into the water storage tank 250 .

As a result, when the dry air is sprayed in the (b) or (c) state than when the dry air is sprayed in the (a) state of FIG. 7, the drop-off frequency of the cooling water is higher, so that the drying efficiency and drying quality are improved, and finally drying The higher the speed, the higher the production speed.

On the other hand, when at least one pair of air knives 247 are provided with reference to FIG. 8 , the second rotation control motor 249 rotates each air knife 247 to the air knife 247 and the painted reinforcing bar 1 . ) will be described in the state where it is not vertically arranged.

First, at least one pair of air knives 247 according to an embodiment of the present invention is provided in the drying module. The air knife 247 according to an embodiment of the present invention shown in Figure 5 or less is provided with a pair, but the embodiment of the air knife 247 is not limited thereto.

A pair of air knives 247 may be arranged in a line as in the state of FIG. 8 (a). In this case, the dry air sprayed from the air knife 247 is sprayed perpendicularly to the surface of the painted reinforcing bar 1, and the cooling water may remain without being dropped as in the state of FIG. 7 (a).

At this time, in order to improve drying efficiency and drying quality, the second rotation control motor 249 according to an embodiment of the present invention rotates each air knife 247 so that a pair of air knives 247 are mutually piercing (β). ) to form.

That is, the second rotation control motor 249 rotates each air knife 247 at a predetermined angle according to the control signal of the controller. The second rotation control motor 249 rotates each air knife 247, so that, as shown in FIG. 8 (b), a pair of air knives 247 form a pier β with each other.

In this case, one air knife 247 forms an acute angle when viewed with respect to the painted reinforcing bar 1 and the ground of FIG. 8 . Here, the acute angle refers to the smaller of the angles formed by one air knife 247 and the painted reinforcing bar 1 .

In addition, in the case of Figure 8 (b), a pair of air knives 247 form a pier (β) within the range of more than 0 ° to less than 180 °. When the air knife 247 is disposed in this way, the dry air of the air knife 247 is to spray the dry air in a direction obliquely transverse to the diameter of the painted reinforcing bar (1).

In this case, since the dry air is sprayed in an inclined direction with respect to the cooling water, the cooling water is not supported by the ribs r and is removed from the surface of the painted reinforcing bar 1 after being moved laterally.

In addition, the second rotation control motor 249 according to another embodiment of the present invention rotates each air knife 247, as shown in Fig. 8 (c), each air knife 247 and the painted reinforcing bar (1) forms an acute angle and a pair of air knives 247 can be arranged parallel to each other.

In this case, as in (b) of FIG. 8, since the dry air is sprayed in an inclined direction with respect to the cooling water, the cooling water is not supported by the rib (r) and is moved laterally and then is removed from the surface of the painted reinforcing bar. .

The first rotation control motor 243 and the second rotation control motor 249 according to another embodiment of the present invention may be respectively rotated at a predetermined angle according to a control signal from the controller in order to improve drying efficiency and drying quality. In this case, the air knife 247 may be implemented by mixing the arrangement shown in FIGS. 7 and 8 .

When the air knife 247 is disposed according to the above-described embodiments, the coolant remaining on the surface of the painted reinforcing bar 1 is efficiently removed. Also, the coolant adsorbed on the pinhole h is efficiently removed. Accordingly, the drying efficiency and drying quality are improved, and finally, the drying rate is increased to increase the production rate.

According to the above-described embodiments, when the painted reinforcing bar is transported at a speed of 1 m/min during the operation of the drying apparatus according to an embodiment of the present invention, the residual amount of coolant is about 5%, 75 compared to the level of 20% of the remaining coolant. The effect of reducing the residual amount of cooling water of % was realized.

Above, those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

The scope of the present invention is indicated by the scope of the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. It must be interpreted.

110: housing 120: coolant injection nozzle
140: cooling module 150: filter module

Claims (2)

Painted rebar with a coating film formed on the surface; Forming an exterior, the housing is provided with a water storage tank at the lower side; a cooling water spray nozzle provided on the upper side of the housing and disposed in the longitudinal direction of the painted reinforcing bar to spray cooling water to the painted reinforcing bar; a first pump having one end connected to the water storage tank and the other end connected to the cooling module; a second pump having one end connected to the cooling module and the other end connected to the cooling water injection nozzle; and a drying device for drying the painted reinforcing bars to which the cooling water is sprayed. Including,
The drying device includes: an upper frame forming an exterior; a moving module provided on the upper side of the upper frame and moving in the longitudinal direction of the painted reinforcing bar; and a drying module rotatably provided in the moving module and spraying dry air to the painted reinforcing bars to remove the cooling water of the painted reinforcing bars. Including,
The moving module includes a moving frame provided with the drying module and moving in the longitudinal direction of the painted reinforcing bar,
The drying module may include a support rod provided inside the moving frame; a first rotation control motor provided at one end of the moving frame to rotate the support rod; a connecting rod connected to the support rod; an air knife provided at an end of the connecting rod and spraying dry air to the painted reinforcing bar; and a second rotation control motor provided between the connecting rod and the air knife to rotate the air knife. Including,
At least one pair of the air knives is provided in the drying module, and the second rotation control motor rotates each of the air knives so that the pair of air knives form a pier with each other,
The cooling module may include: a cooling tower for cooling the cooling water received from the first pump; and a cooling water tank for storing the cooling water cooled in the cooling tower. A post-treatment device for painted reinforcing bars comprising a.
The method of claim 1,
The first rotation control motor rotates the support rod to form an acute angle between the connecting rod and the painted reinforcing bar.

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