KR20210002352A - After treatment apparatus for coated steel reinforcement - Google Patents

Abstract

According to one embodiment of the present invention, an apparatus for post-processing a coated steel reinforcement comprises: a coated steel reinforcement having a coating film formed on the surface thereof; a housing forming the appearance and having a water tank on the lower side thereof; a first transfer roller provided inside the housing to transfer the coated steel reinforcement in the longitudinal direction; a cooling water spray nozzle provided on the upper side of the housing, arranged in the longitudinal direction of the coated steel reinforcement, and spraying cooling water to the coated steel reinforcement; a first pump having one end connected to the water tank and the other end connected to a cooling module; a second pump having one end connected to the cooling module and the other end connected to the cooling water spray nozzle; and a drying device for drying the coated steel reinforcement to which the cooling water is sprayed. According to the present invention, cooling efficiency can be improved.

Description

After treatment apparatus for coated steel reinforcement

The present invention relates to a coating rebar post-treatment apparatus, and relates to a coating rebar post-treatment apparatus capable of increasing the cooling efficiency and drying efficiency of the coated reinforcing bar with a coating film to produce high-quality painted reinforcing bars, and to improve the production speed of the painted rebar .

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

Painted reinforcing bars are a short process in which the reinforcing bar is shot blasted, a heating process in which the reinforcing bar is heated above a certain temperature by high-frequency flow heating, a coating process in which powder epoxy is applied to the reinforcing bar to form a coating 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 onto the reinforcing steel on which the coating film is hardened to cool, and a drying process in which the cooling water is eliminated and dried by spraying dry air on the reinforcing bar. Here, the cooling process and the drying process in the manufacturing process of the painted reinforcement are referred to as a post-treatment process, and the apparatus for performing the cooling process and the drying process is called a post-treatment apparatus.

The coated reinforcing bar 1 manufactured through the above-described process has a pin hole as shown in FIG. 1 on its surface, and the pin hole h is not sufficiently sprayed with cooling water in the cooling process after the curing process or is cooled. If cooling is not performed well due to the slow speed, gas may be generated and discharged in the coating film.

Since the coated reinforcing bars in which a certain number of pinholes (h) are formed are treated as defective products, the occurrence of pinholes (h) is prevented by sufficiently cooling the reinforcing bars on which the coating film is formed in the cooling process. However, if the cooling is performed for a long time for sufficient cooling, the production speed of the painted reinforcement decreases. Therefore, it is necessary to develop a post-treatment device for painted reinforcing bars with improved production speed while sufficiently cooling the reinforcing bar.

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

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

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

In addition, there is a case where the cooling water is adsorbed to the pinhole 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 coolant may contact the surface of the reinforcing bar, and thus, rust may occur in the reinforcing bar.

In particular, when the painted reinforcement is implemented as a deformed reinforcement, even if dry air is sprayed, the rib (r) or node (n) functions to shield the dry air, so that the coolant adsorbed in the pinhole (h) is not easily removed. Will not be.

In the drying process, painted reinforcing bars are generally dried while being transported at a speed of 1m/min. When transported at this speed, the residual amount of cooling water is about 20%. Here, when the speed is increased, the residual amount of cooling water increases, and conversely, when the transfer speed of the painted reinforcing bar is decreased in order to reduce the residual amount of cooling water, the production speed decreases.

Therefore, it is necessary to develop a coating rebar post-treatment device capable of improving the production speed by performing the drying process at a high speed while improving the drying efficiency and drying quality of the painted reinforcement by effectively dropping the cooling water.

It is an object of the present invention to provide a coating rebar post-treatment device capable of manufacturing high-quality painted reinforcing bars by increasing the cooling efficiency and drying efficiency of the painted reinforcing bar on which a coating film is formed, 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 that are not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

A coating reinforcing bar post-treatment apparatus according to an embodiment of the present invention for solving the above problem includes a coating reinforcing bar in which a coating film is formed on the surface; A housing forming an exterior and having a storage tank at the lower side; A first transfer roller provided inside the housing and transferring the painted reinforcement in a longitudinal direction; A coolant spray nozzle provided on the upper side of the housing and disposed in the longitudinal direction of the painted reinforcement to spray coolant onto the painted reinforcing bar; A first pump having one end connected to the storage tank and the other end connected to a cooling module; A second pump having one end connected to the cooling module and the other end connected to the cooling water spray nozzle; And a drying device for drying the painted reinforcing bar into which the cooling water is sprayed. Includes.

In addition, in the first transfer roller, a seating portion on which the painting reinforcement is seated is formed to be spaced apart at a predetermined interval along the longitudinal direction of the first transfer roller, and the cooling water spray nozzle is disposed on the upper side of the seating portion to be staggered with the seating portion. Can be.

In addition, the cooling water spray nozzle may be provided with a spray head for spraying the cooling water to the painted reinforcement, and the spraying angle of the cooling water of the spray head may be carried out at 80 ° ~ 110 °.

In addition, the drying device, the upper frame forming the exterior; A second transfer roller provided on the lower side of the upper frame and transferring the painted reinforcement to which the coolant is sprayed; A moving module provided on the upper side of the upper frame and moving in the longitudinal direction of the painted reinforcement; And a drying module rotatably provided in the moving module and spraying dry air to the painted reinforcing bar to remove the cooling water from the painted reinforcing bar. It may include.

In addition, the movement 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 reinforcement; 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 reinforcement 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, a 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 connection rod connected to the support rod; And an air knife provided at an end of the connecting rod and spraying 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 connection 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 connection rod and the painted reinforcement form an acute angle.

In addition, at least one pair of the 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 bridges with each other.

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

According to the coating rebar post-treatment apparatus according to an embodiment of the present invention, since the spray head is disposed to be alternately with the painting reinforcement, the cooling water sprayed from the spraying head at a certain angle range cools the side of the painting reinforcement to cool the cooling efficiency and cooling speed. Improves, and finally improves production speed.

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

The second rotation control motor rotates a pair of air knives to form a bridge to form a bridge. Dry air is sprayed in an inclined direction to the cooling water remaining in the ribs of the painted reinforcing bar, so that the cooling water is easily removed. The drying quality is improved and the drying speed is finally increased, which improves the production speed.

The effects of the present invention are not limited to the effects mentioned above, 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 reinforcement with a coating film formed on the deformed reinforcement.
2 is a plan view of a cooling device of a post-treatment apparatus for painted reinforcement according to an embodiment of the present invention.
3 is a front view of the cooling device of the reinforcement post-treatment apparatus 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 the reinforcement post-treatment apparatus according to an embodiment of the present invention.
Figure 6 is a side view of the drying apparatus of the coating reinforcement post-treatment apparatus according to an embodiment of the present invention.
7 is a diagram illustrating a state in which the first rotation control motor 243 rotates the support rod 241 so that the air knife 247 sprays dry air by forming a predetermined angle on the painted reinforcing bar.
8 is a diagram illustrating a state in which the second rotation control motor 249 rotates the air knife 247 so that the air knife 247 forms various angles from the upper side of the painted reinforcing bar to inject dry air to be.

In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Even if the terms are the same, if the displayed parts are different, the reference numerals do not coincide.

In addition, terms to be described later are terms set in consideration of functions in the present invention, and since they may vary according to the intention or custom of operators such as experimenters and measurers, their definitions should be made based on the contents throughout the present specification.

In the present specification, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These 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 component may be referred to as a second component, and similarly, a second component may be referred to as a first component. 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, including technical and scientific terms, used herein 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 the present application. Does not.

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

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals shown in each drawing indicate the same member.

Figure 2 is a plan view of the cooling device of the rebar post-treatment device according to an embodiment of the present invention, Figure 3 is a front view of the cooling device of the rebar post-treatment device according to an embodiment of the present invention, Figure 4 An enlarged view of the first transfer roller 170 and the cooling water spray nozzle 120 according to an embodiment of the present invention.

Hereinafter, with reference to Figures 2 to 4, a description will be given of a coating reinforcement post-treatment apparatus according to an embodiment of the present invention.

First, the painted reinforcement 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 among the manufacturing processes of painted reinforcement are referred to as post-treatment processes, and the apparatus for performing the post-treatment process is referred to as a coating reinforcement post-treatment device.

A post-treatment apparatus for painted reinforcement according to an embodiment of the present invention includes a cooling device for cooling by spraying cooling water onto the painted reinforcing bar, and a drying device for drying the painted reinforcing bar into which the coolant is sprayed.

First, referring to Figures 2 to 4, the cooling device according to an embodiment of the present invention is a coating reinforcing bar (1) on which a coating film is formed on the surface, and a housing 110 that forms an exterior and is provided with a storage tank 160 at the lower side. , The first transfer roller 170 provided inside the housing 110 and transferring the painting reinforcement 1 in the longitudinal direction, provided on the upper side of the housing 110, and disposed in the longitudinal direction of the painting reinforcement 1 (1) A cooling water spray nozzle 120 for spraying cooling water, a first pump 131 having one end connected to the storage tank 160 and the other end connected to the cooling module 140, and one end connected to the cooling module 140 And a second pump 133 connected to the coolant spray nozzle 120 at the other end.

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 coated reinforcing bar 1 is in a state of undergoing a curing process in which the reinforcing bar on which the coating film is formed is air-cooled for a certain period of time to cure the coating film.

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

The housing 110 forms an exterior. A storage tank 160 in which cooling water is stored is provided under the housing 110.

The first transfer roller 170 is provided inside the housing 110. The first transfer roller 170 is provided to be rotatable. The first transfer roller 170 transfers the painting reinforcement (1) in the longitudinal direction of the painting reinforcement (1). The first transfer roller 170 may continuously transfer the painted reinforcing bar 1, which is continuously drawn in, in the longitudinal direction of the painted reinforcing bar 1.

The cooling water spray nozzle 120 sprays cooling water onto the painted reinforcing bar (1). The cooling water injection nozzle 120 is provided on the upper side of the housing 110. The cooling water injection 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 cooling water spray nozzles 120 may be provided. In this case, the cooling water injection nozzles 120 are respectively connected to the distribution pipes 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 painting reinforcement 1, so that the cooling water is sprayed on the painting reinforcement 1 continuously drawn into the housing 110.

When the cooling water is sprayed onto the painting reinforcement 1 from the cooling water spraying nozzle 120, the painting reinforcement 1 is cooled by the cooling water. The cooling water is stored in the water storage tank 160 together with foreign substances on the surface of the painting reinforcement (1) after cooling the painting reinforcement (1). In this case, the cooling water is stored in a state in which the temperature is increased compared to when the cooling water is injected from the cooling water spray nozzle 120.

The first pump 131 has one end connected to the storage tank 160 and the other end connected to the cooling module 140. The first pump 131 pumps the coolant stored from 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 that cools the cooling water delivered from the first pump 131, and a cooling water tank 143 that stores the cooling water cooled in the cooling tower 141. Includes. The coolant is transferred to the cooling tower 141 by the first pump 131, 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 spray 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, the second pump 133 at one end is connected to the cooling water tank 143 to deliver the cooling water stored in the cooling water tank 143 to the cooling water spray nozzle 120. According to the embodiment, when a plurality of coolant spray 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 cooling water tank 143. That is, the cooling water stored in the water storage tank 160 along with foreign substances on the surface of the painted reinforcement 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 cooling water may contain foreign substances.

In this case, when the second pump 133 pumps coolant from the coolant tank 143 and delivers it to the coolant spray nozzle 120, the filter module 150 filters foreign substances of 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 the foreign substances are contained in the cooling water sprayed from the cooling water injection nozzle 120. Not included, the painting quality of the painting reinforcement (1) is improved.

The first transfer roller 170 is formed with a mounting portion 171 on which the painting reinforcement 1 is seated, as shown in FIG. 4. The seating portion 171 is formed by being recessed so that the painting reinforcement 1 is seated. A plurality of seating portions 171 may be formed. In this case, the seating portions 171 are formed to be spaced at a predetermined interval along the length direction of the first transfer roller 170. Accordingly, the painting reinforcement 1 may be disposed to be spaced apart from each other on the seating portion 171.

The cooling water injection nozzle 120 may be disposed above the seating portion 171. In this case, the cooling water spray nozzle 120 may be disposed in a position deviated from the vertical position from the seating portion 171. That is, as shown in FIG. 4, the cooling water spray nozzle 120 may be disposed to be alternately with the seating portion 171. Accordingly, the cooling water spray nozzle 120 may be disposed on the upper side of the painting reinforcing bar (1) and alternately with the painting reinforcing bar (1).

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

The spray head 123 sprays coolant. The spray head 123 sprays the cooling water within a certain angle range. In this case, a certain angle range in which the spray head 123 sprays the cooling water is defined as the cooling water spray angle α.

When the cooling water is injected from the spray head 123, the painted reinforcing bar 1 disposed on the lower side is cooled by the cooling water. According to an embodiment of the present invention, since the spray heads 123 are disposed to cross each other with the painting reinforcement 1, the cooling water sprayed from the spraying head 123 at a certain angle range can cool the side of the painting reinforcement. In this case, since cooling water is sprayed on the sides of the two painted reinforcing bars 1 from one spraying head 123 to cool the painted reinforcing bars 1, cooling efficiency and cooling speed may be improved.

If the coolant is sprayed from the upper side of the painted reinforcing bar (1) in the vertical direction, the coolant is in contact only with the upper surface of the painted reinforcing bar (1), and the cooling water does not come into contact with the side of the painted reinforcing bar (1), or comes into contact with the upper surface. As a result, only some of the cooling water that has risen in temperature is in contact, so cooling is difficult.

Accordingly, pinholes (h) may occur because cooling is not sufficiently performed on the side of the painted reinforcing bar (1), and cooling rate decreases when cooling water is sprayed for a long time in order to sufficiently flow the coolant to the side of the painted reinforcing bar (1). Thus, the production speed decreases.

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, and when the rib (r) is disposed horizontally, the upper side in the vertical direction By shielding the cooling water sprayed from, the lower side of the painted reinforcement may not be sufficiently cooled.

The cooling water spray nozzle 120 according to an embodiment of the present invention is disposed to be alternately disposed with the seating portion 171 so as to be alternately disposed with the painting reinforcing bar 1, and spray the cooling water at a predetermined angle from the spray head 123 , Cooling the side of the painted reinforcing bar (1) improves the cooling efficiency and cooling speed. Accordingly, it is possible to suppress the occurrence of pinholes (h) of the painted reinforcing bar 1 and improve the production speed.

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

5 is a perspective view of a drying apparatus of the rebar post-treatment apparatus according to an embodiment of the present invention, FIG. 6 is a side view of the drying apparatus of the reinforcement post-treatment apparatus according to an embodiment of the present invention, and FIG. A one-turn control motor 243 is an exemplary view showing a state in which the support rod 241 is rotated so that the air knife 247 forms a predetermined angle on the painted reinforcing bar to spray dry air. It is a diagram illustrating a state in which the two-rotation control motor 249 rotates the air knife 247 so that the air knife 247 forms various angles from the upper side of the painted reinforcing bar to inject 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 comprises an upper frame 211 forming an exterior, a painted reinforcing bar 1 provided under the upper frame 211 and sprayed with cooling water. The second transfer roller 220 to be transferred, 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 rotatably provided in the moving module and dried on the painted reinforcing bar (1) It includes a drying module to remove the cooling water of the painted reinforcement (1) by spraying air.

The upper frame 211 and the support frame 213 form the exterior of the drying apparatus. The upper frame 211 and the support frame 213 form an inlet (i) through which the painted reinforcement is inserted and a discharge part (e) through which the painted reinforcement 1 is discharged.

The upper frame 211 is provided on the upper side of the painted reinforcement (1). A storage tank 250 is provided below the support frame 213 for storing cooling water that is removed from the painted reinforcement 1 by a drying module to be described later.

The second transfer roller 220 is provided under the upper frame 211. The second transfer roller 220 may be provided on the upper side of the storage tank 250. The second transfer roller 220 is provided to be rotatable. The second transfer roller 220 transfers the painted reinforcing bar (1) sprayed with coolant in the longitudinal direction of the painted reinforcing bar (1). The second transfer roller 220 may continuously transfer the painted reinforcing bar 1 that is continuously drawn in.

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 forward and backward along the longitudinal direction of the painted reinforcing bar (1). The moving module will be described later.

The drying module is provided rotatably on the moving module. The drying module may be provided on the upper side of the painted reinforcement (1). The drying module sprays dry air on 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 eliminate the cooling water of the painted reinforcing bar. The drying module will be described later.

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

The moving module according to an embodiment of the present invention includes a movement control motor 231 fixedly provided on the upper side of the upper frame 211, a moving frame 233 that is provided with a drying module and moves in the longitudinal direction of the painted reinforcing bar (1). ), and a screw that one end is coupled to the movement control motor 231 and penetrates 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 It includes a 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 from a control unit (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 provided to be movable above the upper frame 211. The moving frame 233 is provided with a drying module. The moving frame 233 can be moved 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 reinforcement (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 with a ball screw system. In this case, the moving frame 233 may be provided with a nut cap (not shown) penetrating through the screw shaft 235.

When the movement control motor 231 rotates, the screw shaft 235 is rotated, so that the moving frame 233 can be moved 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, a detailed structure of the drying module will be described.

The drying module according to an embodiment of the present invention is provided at one end of the support rod 241 provided on the inside of the moving frame 233 and the moving frame 233 to rotate the support rod 241 It includes a control motor 243, a connecting rod 245 connected to the support rod 241, and an air knife 247 provided at the end of the connecting rod 245 and spraying 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 certain 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 reinforcement 1 is changed as shown in FIG. 7. In this case, the angle formed by the air knife 247 and the painting reinforcement 1 is changed, so that the spray 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 first rotation control motor 243 may control a rotation angle range according to a control signal from a controller (not shown).

The connecting rod 245 is connected to the support rod 241. The connecting rod 245 has one end coupled to the support rod 241 and the other end coupled to an air knife 247 to be described later. The connection 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 connection rod 245. The air knife 247 sprays dry air with the painted reinforcing bar (1). In this case, a first air pump P1 that supplies 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 connection rod 245 and the air knife 247. The second rotation control boat may rotate the air knife 247 within a certain angle range with respect to the central axis of the connection rod 245.

When the second rotation control motor 249 is driven to rotate the air knife 247, as shown in FIG. 8, the angle formed by the air knife 247 and the painted reinforcement 1 is changed. In this case, the angle formed by the lengthwise direction of the air knife 247 and the painted reinforcement 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 second rotation control motor 249 may control a rotation angle range according to a control signal from the controller.

At least one pair of air knives 247 may be provided depending on the embodiment. In this case, at least one pair of connection rods 245 may be provided on the support rod 241, and a second rotation control motor 249 may be provided between the connection 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 storage tank 250. The annular air blower 260 is formed in a semicircular shape and has an opening therein. Painted reinforcement (1) penetrates through the opening.

The annular air blower 260 injects dry air in the direction of the opening. The annular air blower 260 finally sprays dry air in a state adjacent to the painted reinforcement 1 to finally remove the cooling water. A second air pump P2 supplying dry air to the annular air blower 260 may be connected to the annular air blower 260.

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

First, depending on the type, thickness, and type of coating film, there are cases in which dry air is rapidly sprayed first after the cooling process or after a predetermined period of time to improve the quality of the painted reinforcing bar (1).

In this case, the moving frame 233 moves forward and backward with respect to the longitudinal direction of the painting reinforcement 1 to move the drying module forward and backward, so that the dry air may be sprayed on the painting reinforcement 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 reinforcement and the air knife 247 is moved is shown by dotted lines and solid lines.

That is, when the drying air needs to be rapidly sprayed after the cooling process, the control unit rotates the movement control motor 231 according to the user's input, so that the moving frame 233 is attached to the inlet (i) of the painted reinforcing bar (1). Advance to approach. In this case, the drying module is placed close to the inlet (i) of the painted reinforcement (1). Accordingly, as soon as the painting reinforcement 1 is introduced into the inlet portion i of the drying device, the drying air can be sprayed onto the painting reinforcement 1 immediately by the drying module.

On the contrary, if the drying air is to be sprayed after a certain period of time after the cooling process, the control unit rotates the movement control motor 231 by the user's input, so that the moving frame 233 is discharged from the painted reinforcing bar 1 ) To approach. In this case, the drying module is disposed close to the discharge portion (e) of the painted reinforcement (1). Accordingly, the painting reinforcement 1 is delayed for a certain period of time while moving from the inlet portion (i) of the drying device to the discharge portion (e), and then the drying air can be sprayed to the painting reinforcement (1) by the drying module. have.

On the other hand, referring to FIG. 7, the first rotation control motor 243 rotates the support rod 241 so that the connecting rod 245 and the painted reinforcement 1 form an acute angle will be described.

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

Here, when the painted reinforcing bar (1) is implemented as a deformed reinforcing bar, some of the coolant (w) of 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. In addition, 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 nodes (n) of the painted reinforcing bar (1) is dried by spraying in the vertical direction by the ribs (r) preventing the cooling water (w) from falling off. It does not fall off by air and may remain in the painted reinforcing bar (1). In addition, the cooling water adsorbed in the pinhole (h) may remain in the pinhole (h) by resisting against the vertical direction without being dropped out 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 reinforcement 1 have an acute angle. To form. In this case, the air knife 247 and the painted reinforcement 1 form an acute angle.

That is, the first rotation control motor 243 rotates the support rod 241 by a predetermined angle according to a control signal from the controller. The first rotation control motor 243 rotates the support rod 241 so that the connection rod 245 and the air knife 247 are positioned in the state (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 reinforcement. Here, the acute angle refers to the smaller one of the angles formed by the connecting rod 245 and the painted reinforcement.

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

Accordingly, the cooling water is not supported by the ribs (r) and is moved to the side and then is removed from the surface of the painted reinforcing bar (1) and removed. Likewise, the cooling water adsorbed in the pinhole h is also removed from the pinhole h by dry air sprayed in an inclined direction. The dropped coolant falls into the 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. Increased speed increases production speed.

On the other hand, referring to FIG. 8, when at least one pair of air knives 247 is provided, the second rotation control motor 249 rotates each air knife 247 so that the air knife 247 and the painted reinforcing bar 1 ) Is not arranged vertically.

First, at least one pair of air knives 247 according to an embodiment of the present invention is provided in the drying module. Although a pair of air knives 247 according to an embodiment of the present invention shown in FIG. 5 or below is provided, 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 (a) of FIG. 8. In this case, the dry air sprayed from the air knife 247 is sprayed perpendicularly to the surface of the painted reinforcing bar 1, so that the cooling water may remain without dropping out as shown in (a) of FIG. 7.

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 the pair of air knives 247 are connected to each other ) To form.

That is, the second rotation control motor 249 rotates each air knife 247 by a predetermined angle according to a control signal from the control unit. The second rotation control motor 249 rotates each of the air knives 247 so that the pair of air knives 247 form a bridge (β) as shown in FIG. 8B.

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

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

In this case, since the dry air is injected in a direction inclined with respect to the cooling water, the cooling water is not supported by the ribs (r) and is moved to the side, and then is removed from the surface of the painted reinforcing bar 1 and removed.

In addition, the second rotation control motor 249 according to another embodiment of the present invention rotates each air knife 247, as shown in Figure 8 (c), each air knife 247 and the painted reinforcement (1) This acute angle can be formed 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 injected in a direction inclined to the cooling water, the cooling water is not supported by the ribs (r) and is moved to the side and then is removed from the surface of the painted reinforcing bar and removed. .

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

When the air knife 247 is disposed according to the above-described embodiments, the cooling water remaining on the surface of the painted reinforcement 1 is efficiently removed. In addition, the cooling water adsorbed in the pinhole (h) is also efficiently removed. Accordingly, drying efficiency and drying quality are improved, and finally, drying speed is increased and production speed is improved.

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

As described above, those of ordinary skill in the art to which the present invention pertains will appreciate 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: cooling water spray nozzle
140: cooling module 150: filter module

Claims (2)

Painted reinforced with a coating film formed on the surface; A housing forming an exterior and having a storage tank at the lower side; A coolant spray nozzle provided on the upper side of the housing and disposed in the longitudinal direction of the painted reinforcement to spray coolant onto the painted reinforcing bar; A first pump having one end connected to the storage tank and the other end connected to a cooling module; A second pump having one end connected to the cooling module and the other end connected to the cooling water spray nozzle; And a drying device for drying the painted reinforcing bar into which the cooling water is sprayed. Including,
The drying apparatus 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 reinforcement; And a drying module rotatably provided in the moving module and spraying dry air to the painted reinforcing bar to remove the cooling water from the painted reinforcing bar. Including,
The moving module includes a moving frame provided with the drying module and moving in the longitudinal direction of the painted reinforcement,
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 connection 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 bridges with each other,
The cooling module may include a cooling tower for cooling the cooling water delivered from the first pump; And a cooling water tank storing the cooling water cooled in the cooling tower. Including,
A coating rebar post-treatment device provided with a filter module between the second pump and the cooling water tank.
The method of claim 1,
The first rotation control motor rotates the support rod so that the connecting rod and the painted reinforcement form an acute angle.

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