KR101544054B1 - Automatic surface treating and painting equipment for length of linear member - Google Patents

Abstract

The present invention relates to an automatic surface treating and painting apparatus for the length of a linear member, capable of automatically performing short blast, high frequency heat treatment, powder coating, cooling, and discharging operations while moving a plurality of lengths of linear members at the same time. Also, the present invention relates to the automatic surface treating and painting apparatus for the length of the linear member uniformly paints the surface of the length of the linear member and minimizes deviation between the lengths of the linear members processed at the same time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic surface treating and painting apparatus,

The present invention relates to a longitudinal member automatic surface treatment coating apparatus which automatically performs shot blasting, high frequency heat treatment, powder coating, cooling and discharging operations while simultaneously transporting a plurality of length members.

The present invention also relates to a longitudinal member automatic surface treatment coating apparatus capable of uniformly painting paint over the entire surface of a longitudinal member and minimizing occurrence of deviation between simultaneously operated longitudinal members.

In general, the length of linear members including reinforcing bars and various pipes are widely used for construction work, civil works, machinery, steel structures, etc. In order to prevent cracking of corrosion and concrete, Paint.

However, conventionally, a special apparatus is not provided for coating a long member, but a manual work is performed by a worker using a spray gun in a state in which a long member is mounted on a table.

For example, when the entire reinforcing bar is painted, the worker moves the length of the reinforcing bar in the length direction of the reinforcing bar using the spray gun, which causes not only difficult work but also slows down the productivity due to the slow coating speed, The paint quality deteriorates.

Recently, an automatic painting apparatus has been proposed in Korean Patent No. 1156264 'Pipe Painting Apparatus' and Korean Patent Laid-Open Publication No. 2011-0092378 'Pipe Surface Treatment Apparatus and Pipe Painting Apparatus Therefor'.

However, the above-described apparatus performs only a part of the whole painting operation while conveying the length member one by one, and can not automatically perform the shot blasting, the high-frequency heat treatment, the powder coating, and the cooling and discharging operations while simultaneously transporting the plurality of length members at the same time.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a long member automatic surface treatment coating apparatus which automatically performs shot blasting, high frequency heat treatment, powder coating, cooling and discharging operations while simultaneously transporting a plurality of length members do.

Furthermore, the present invention is intended to provide a longitudinal member automatic surface treatment coating apparatus capable of uniformly painting paint over the entire outer surface of a longitudinal member, and minimizing occurrence of a deviation between simultaneously operated longitudinal members.

To this end, the longitudinal member automatic surface treatment coating apparatus according to the present invention comprises: a loading device for supplying a length member; A short blaster which receives a length member from the loading device and ejects hard particles onto the surface of the length member; A high frequency heat treatment apparatus for supplying heat to the length member passing through the shot blaster and heat treating the length member by applying a high frequency; A paint coating device which receives a length member passed through the high frequency heat treatment apparatus and injects paint onto the length member; A cooling device for supplying and cooling a length member passed through the paint coating device; And a discharge device for supplying and discharging the length member passed through the cooling device.

At this time, the loading device includes a plurality of support arms spaced apart from each other along the longitudinal direction of the length member and supporting the respective length members, and each of the upper surfaces of the support arms is formed with an inclined portion inclined downward An absorber; A conveying guide rail spaced apart along the longitudinal direction of the length member accommodated in the member accommodating unit, the conveying guide rail being elongated toward the front side from the member accommodating unit; A mounting groove in which the length member is seated on a body formed to be long forward and which is vertically moved up and down at a lower height than a supporting arm of the member accommodating unit by a cylinder device, A transfer arm which is provided with a plurality of transfer members for transferring a plurality of length members at one time; And a plurality of lengthwise members provided on the transfer arm are installed between the transfer guide rails adjacent to each other at the front side end of the transfer guide rail and are simultaneously lifted by the descent of the cylinder apparatus, And a feeding roller conveyor for feeding the member in the longitudinal direction of the length member and supplying the member to the shot blaster.

The shot blaster further includes a particle feeder for supplying the hard particles; A particle injector projecting the hard particles supplied from the particle feeder at a high pressure by a motor, the projected hard particles being directed to the length member being conveyed; And a particle collector for collecting the hard particles, which are sprayed from the particle injector, and then the surface of the long member is finely finished for coating the paint.

The chute type conveying conveyor may further include a chain type conveying conveyor for conveying the length-finished length member of the shot blaster to the high-frequency thermal processing apparatus, wherein the chain type conveying conveyor is installed at one end in the longitudinal direction, A pair of drive sprockets; A pair of driven sprockets installed at the other end in the longitudinal direction and spaced apart at a predetermined interval in the width direction; A pair of chains arranged on the driving sprocket and the driven sprocket and rotating along an endless track and spaced apart in the width direction; And a transfer support plate provided at predetermined intervals along the movement direction of the chain and having both ends fixed to the chain and moving along the endless track together with the chain and having grooves on which the length members are seated, .

The apparatus may further include a primary stopper provided on the entry side of the shot blaster for aligning a plurality of lengthwise members being simultaneously transported, wherein the first stopper is engaged with all the front ends of the plurality of length members being transported at the same time, A primary alignment barrier having a constant width to be suspended; And a primary alignment barrier actuator for actuating the primary alignment barrier such that the primary alignment barrier blocks the transfer passage of the length member or opens the transfer passage, The front end portions of the plurality of length members being conveyed are blocked by the primary alignment barriers when the primary alignment barrier is the conveying passage roll bar, and the forward end portions of all the length members are aligned in the same line.

In addition, it is preferable to further include a secondary stopper provided on the draw-out side of the shot blaster and arranged to align a plurality of lengthwise members being simultaneously transported, wherein the second stoppers are engaged with the front ends of the plurality of length members being transported at the same time A secondary alignment barrier having a constant width to cause the transfer to be suspended; And a secondary barrier actuator for actuating the secondary alignment barrier such that the secondary alignment barrier blocks the transfer passage of the length member or opens the transfer passage, When the secondary alignment barrier is the transfer passage roll block, the front end portions of the plurality of length members being conveyed are blocked by the secondary alignment barrier, and the forward end portions of the longitudinal direction of all the length members are aligned in the same line.

Also, the high-frequency thermal processing apparatus may include: an annular coil having the same number as that of the length member being conveyed at the same time; And a power supply for applying power to the annular coil, wherein the high frequency heat treatment is performed while the length member passes through the hollow portion of the annular coil.

The paint coating apparatus may further include: a paint spray nozzle for spraying the powder charged with electricity; A primary ground roller which is provided on a side where a longitudinal member enters toward the paint spray nozzle to convey the longitudinal member and is made of a metal material and grounds the longitudinal member to a polarity opposite to that of the powder; And a length member provided on the side from which the paint spray nozzle advances to transfer the length member and is made of a metal material so that the length member is grounded at a polarity opposite to that of the powder, And a secondary ground roller provided at a position shorter than the length of the length member.

The cooling device further includes a primary cooling device for feeding the length member through the cooling conveying roller in a state in which a lower portion of the cooling conveying roller is locked in a water tank in which cooling water is stored; A secondary cooling device for injecting cooling water into the length member being conveyed through the cooling water injection nozzle; And a drying apparatus for drying the length member by applying a drying wind to the length member having passed through the primary cooling apparatus and the secondary cooling apparatus.

The apparatus may further include a tertiary stopper disposed at a downstream end of the discharging device to terminate the feeding of the length member and aligning the plurality of length members being simultaneously transported, It is preferable that the front end portions of the members are all engaged to include a tertiary alignment barrier having a constant width so as to stop the transfer.

Further, the discharging device includes a discharge conveyor for transferring the length member passed through the cooling device to the third stopper; A base frame for supporting the discharge conveyor from below; A pivotal coupler for hinging one side of the discharge conveyor and one side of the base frame so that the other side of the discharge conveyor can be heard using the hinge connection point as a pivot; And a discharge driver installed on the opposite side of the pivotal coupler to lift up the other side of the discharge conveyor so that the discharge conveyor is inclinedly lifted by the discharge driver to simultaneously discharge a plurality of length members aligned on the discharge conveyor .

The present invention as described above automatically performs shot blasting, high frequency heat treatment, powder coating, cooling and discharging operations while simultaneously transporting a plurality of length members. Therefore, the entire process necessary for painting the long member is automatically performed.

Further, the present invention carries out powder coating in a state in which a plurality of length members are aligned and transported while uniformly charging the entire length member. Thus, paint can be evenly coated over the entire length of the length member, and the occurrence of coating property deviations among the length members simultaneously worked is minimized.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a construction of a long member automatic surface treatment coating apparatus according to the present invention; FIG.
2A is a plan view showing a loading apparatus of the present invention.
2B is a partial perspective view showing the loading apparatus of the present invention.
3 is a front view showing the alignment stopper of the present invention.
4A is a front view showing a shot blaster of the present invention.
4B is a plan view showing the shot blaster of the present invention.
5A is a front view showing the chain type conveying conveyor of the present invention.
5B is a plan view of the chain type conveying conveyor of the present invention.
6A is a front view showing a high frequency heat treatment apparatus of the present invention.
6B is a plan view showing the high frequency heat treatment apparatus of the present invention.
6C is a side view showing the high frequency heat treatment apparatus of the present invention.
7A is an external plan view of the paint coating apparatus of the present invention.
Fig. 7B is an internal structural view showing the paint coating apparatus of the present invention.
8A is a front view showing a secondary cooling apparatus of the present invention.
8B is a partial enlarged view schematically showing the secondary cooling apparatus of FIG. 8A.
9A is a front view showing a primary cooling apparatus of the present invention.
9B is a plan view showing a primary cooling device of the present invention.
10A is a front view showing a discharge device of the present invention.
FIG. 10B is a partially enlarged view of the rotation coupling portion of FIG. 10A. FIG.
FIG. 10C is a plan view showing the discharging device of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a longitudinal member automatic surface treatment coating apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, steel reinforcement is taken as an example of a length member, but it is obvious that the present invention can be applied to other pipes and the like.

First, the entire lengthy member automatic surface treatment coating apparatus according to the present invention will be schematically described with reference to FIG. 1 (a) and 1 (b) are a front view and a plan view, respectively, of a longitudinal member automatic surface treatment coating apparatus according to the present invention.

The present invention relates to a method of coating a paint by transporting a plurality of length members ST (hereinafter referred to as "reinforcing bars") and coating the same with loading devices 100, a shot blaster 200, a chain type conveying conveyor 400, (500), a paint coating device (600), cooling devices (700, 800), and a discharge device (900) are sequentially arranged.

At this time, a plurality of reinforcing bars ST are simultaneously inserted through the loading device 100, and a plurality of reinforcing bars ST are simultaneously transported, and the surface is cleanly finished by the hard particles projected from the shot blaster 200.

Next, the surface-finished reinforced bar ST is conveyed to the high-frequency thermal processing apparatus 500 by the chain-type conveying conveyor 400. In the high-frequency thermal processing apparatus 500, the high- The steel bars (ST) are heated in an induction manner.

Next, the heat-treated reinforcing bar ST is supplied to the paint coating apparatus 600, and paint is painted over the entire surface thereof. Powder coating is used to electrostatically pull charged paint powder from steel (ST).

Next, the painted reinforcing steel (ST) is conveyed to the secondary cooling device 800 through the cooling conveying roller 710 of the primary cooling device 700. Since the reinforcing bar ST is after the paint is painted, the cooling conveying roller 710 is wrapped with a soft cloth, and the cooling conveying roller 710 is immersed in the cooling water so as to primarily cool the high-frequency heated steel bar ST.

Next, the reinforcing bar ST which has been cooled first in the primary cooling device 700 is secondarily cooled in the second cooling device 800, and cooling is performed by the cooling water injection nozzle. The cooled reinforced bar (ST) is blown away by dry wind and dried.

Next, the reinforcing bars ST cooled and dried in the cooling devices 700 and 800 are transferred to the discharging device 900, and the discharging device 900 discharges the reinforcing bars ST to the collecting device 950. The reinforcing bars (ST) collected in the reinforcing bar collecting device 950 are bundled in a certain number of units and are carried out to the outside.

Meanwhile, in the present invention, the leading ends of the reinforcing bars ST being simultaneously transported by the primary stopper 310, the secondary stopper 320 and the tertiary stopper 330 are aligned so as to be positioned on the same line, So that each process is performed in an aligned state.

Therefore, shot blasting, high frequency heat treatment, powder coating, cooling and discharging operations are automatically performed while simultaneously transporting a plurality of length members ST, that is, a plurality of reinforcing bars ST.

Further, the present invention not only uniformly paints the paint over the entire outer surface of the reinforcing bars (ST), but also minimizes the occurrence of variations in paint painting characteristics between the reinforcing bars (ST) operated at the same time.

More specifically, the loading apparatus 100 simultaneously supplies a plurality of reinforcing bars ST. The loading apparatus 100 includes a member receiving unit 110, a conveying guide rail 120, a conveying arm 130, And a conveyor 140.

2B, the member receptacle 110 includes a plurality of support arms 111 which are spaced apart from each other along the longitudinal direction of the reinforcing bars ST and stably support the reinforcing bars ST at various points.

Each support arm 111 is fixedly installed on the support base 112 and is located at a predetermined height from the bottom surface and extends in a direction orthogonal to the reinforcing bar ST to support the reinforcing bar ST.

An inclined portion 111a inclined downward toward the front is formed on the upper surface of the support arm 111 so that the operator can push the reinforcing bar ST placed on the support arm 111 forward to drop it.

The conveying guide rail 120 receives the reinforcing bars ST from the member receiving unit 110 and guides the reinforcing rods ST to be conveyed to the receiving roller conveyor 140. A plurality of conveying guide rails 120 are disposed along the longitudinal direction of the reinforcing bars ST Respectively.

The conveying guide rail 120 is formed to extend from the rear side where the member receiving unit 110 is located to the front side where the drawing roller conveyor 140 is installed and is usually fixed to the bottom surface.

The transfer arm 130 is installed to be movable along the transfer guide rail 120 so that the reinforcing bars ST of the member receiving unit 110 are transferred to the drawing roller conveyor 140. The body of the transfer arm 130, A plurality of seating grooves 130a are formed to accommodate a plurality of reinforcing bars ST at a time.

A lower end of the transfer arm 130 is connected to a lower end of the transfer arm 130. The lower end of the transfer arm 130 is connected to the lower end of the transfer arm 130. [ And the transfer arm 130 can be supported by the ascending / descending guide rods 133a when necessary.

The input cylinder device 133 is fixedly installed on the installation frame 131 and a driving wheel 132 is installed below the installation frame 131. The driving wheel 132 is rotated while being engaged with the conveying guide rail 120 to move the conveying arm 130.

The installation frames 131 are connected to each other by the connection arms 151 and 152 so that the plurality of installation frames 131 spaced apart in the longitudinal direction are simultaneously moved forward and backward.

On the other hand, the height of the transfer arm 130 is limited to be less than the height of the support arm 111 so as to receive the reinforcing bars ST dropped from the support arm 111. The feed arm 130 is raised and lowered by the feed cylinder device 133 within a limited height as described above so that the reinforcing bars ST are placed on the feed roller conveyor 140. [

The plurality of reinforcing bars ST dropped from the support arm 111 of the member storage unit 110 are stacked on the transfer arm 130 located below the support arm 111 and are moved forward along the transfer guide rail 120 The transfer arm 130 moves the loaded reinforcing bars ST onto the drawing roller conveyor 140. [

That is, when the height of the conveying arm 130 is adjusted to be higher than the conveying surface of the drawing roller conveyor 140, the conveying arm 130 reaches a predetermined position next to the drawing roller conveyor 140, When the arm 130 is lowered, the reinforcing bars ST are transferred onto the drawing roller conveyor 140.

The drawing roller conveyor 140 is for conveying a plurality of reinforcing bars ST to the side of the shot blaster 200 at one time and is provided at the front side end of the conveying guide rail 120 and between the adjacent conveying guide rails 120 Respectively.

As described above, various portions of the reinforcing bar ST are simultaneously supported by the respective portions of the feeding roller conveyor 140 provided between the adjacent conveying guide rails 120, so that the reinforcing bar ST can be stably Receive.

The drawing roller conveyor 140 not only has the same number of seating grooves 142b as the number of the reinforcing bars ST to be simultaneously inserted into one long roller 142 but also has the same number as the number of the reinforcing bars ST (Not shown) may be arranged in a straight line and rotated by one rotation axis.

The drawing roller conveyor 140 is operatively installed in the base frame 140. A chain gear 143 or the like is installed on the rotary shaft of each roller and the chain gears 143 are connected by a single operation chain , And the reinforcing bars (ST) are transferred to one side when the electric motor is operated.

Next, the primary stopper 310 (stopper) is installed on the inlet side of the shot blaster 200 to align the plurality of reinforcing bars ST during transportation, and the leading end of the reinforcing bar ST Are positioned on the same line.

As will be described later, when a plurality of reinforcing bars (ST) in which coating operations are in progress are aligned using the stoppers 310 and 320, a plurality of reinforcing bars (ST) enter the respective processes at the same time, I can do it.

3, the primary stopper 310 includes a primary alignment barrier 311 for temporarily stopping the movement of the reinforcing bar ST and a primary alignment barrier 311 connected to the primary alignment barrier 311 Lt; RTI ID = 0.0 > 312 < / RTI >

At this time, the primary alignment barrier 311 has a constant width to temporarily stop the conveyance of the reinforcing bars ST as the front ends of the plurality of reinforcing bars ST being conveyed are caught, and the primary alignment barriers 311 are rotatable Respectively.

The primary alignment barrier actuator 312 can prevent the primary alignment barrier 311 from interfering with the conveyance passage of the reinforcing bar ST (for example, upper projecting operation) or opening the conveying passage of the bar ST For example, a lower landing operation).

A hydraulic or pneumatic cylinder is used, in which case the cylinder rod is linked (314) to the primary alignment barrier 311, and the cylinder body is linked to the base frame 315).

Accordingly, when the primary alignment barrier 311 is conveyed by the primary alignment barrier actuator 312, the front ends of the plurality of reinforcing bars ST being conveyed are blocked by the primary alignment barriers 311 And the forward end portions of all the longitudinal members ST are aligned in the same line.

3, the lower end of the primary alignment barrier 311 coupled to the cylinder rod by the link 314 is rotated about the pivot axis 313, Prevent movement. Thus, the bars ST are aligned.

After the reinforcing rods ST are aligned by the primary alignment barriers 311, the operation is reversed and the primary alignment barriers 311 are moved to the lower portion of the base frame to open the conveying passage of the reinforcing bar ST do. Therefore, it starts to be fed again to the reinforcing bars (ST) which are temporarily stopped.

However, the primary stopper 310 of the present invention can be used as long as the primary alignment barrier 311 can block or open the transfer passage of the reinforcing bar ST for the purpose of aligning the bar ST, And other link structures may be used.

Next, the shot blaster 200 is a pretreatment device for rust prevention coating, which removes scales, rust, coatings and the like by projecting hard particles (sharp grain) onto the surface of the steel rod ST by the rotation force of the motor, To clean up.

This shot blaster 200 is arranged by the primary stopper 310 so that the hard particles are projected to a plurality of reinforcing bars ST entered at the same time so that all the reinforcing bars ST are uniformly shot blasted Perform the operation.

As shown in FIGS. 4A and 4B, the shot blaster 200 includes a particle feeder 210 for supplying hard particles and a hard particle that is projected with a strong rotational force by the rotational force of the motor, (For example, a rotating body or an impeller) installed so as to face the particle injectors 220_T and 220_B.

In addition, the shot blaster 200 is a particle collecting device for collecting hard particles, which are projected from the particle injectors 220_T and 220_B composed of a rotating body such as an impeller and finished with the surface of the reinforcing bar ST to be suitable for pre- (230).

For example, the hard particles projected by the particle injectors 220_T and 220_B are conveyed by the conveying screw and the bucket type conveyor and stored in the particle feeder 210. The particle injectors 220_T and 220_B convey the upper rotors 220_T and 220_B, The lower rotating body 220_B, and the like, and projects the hard particles from above and below the reinforcing bar ST.

However, it is preferable to provide a dust removing brush and a high-pressure air nozzle (not shown) on the outlet side of the shot blaster 200 as described above. The dust removing brush and the high- It consists of a rotary brush and an air nozzle, and various foreign substances are removed when a reinforcing bar (ST) passes between the rotary brushes.

Next, the second stopper 320 stops the reinforcing bars ST, which are not aligned by the vibrations during the operation of the short blaster 200 as described above, the difference in the number of revolutions of the respective conveying rollers, Align again.

According to the second stopper 320, since the ends of all the reinforcing bars ST are aligned on the same line immediately before supplying the reinforcing bars ST to the high-frequency heat treatment apparatus 500, all the reinforcing bars ST are arranged in the high- (500) under the same conditions.

That is, a plurality of reinforcing bars ST being conveyed to the high-frequency thermal processing apparatus 500 enter the same time, and then the same position is grounded by the grounding rollers 630 and 640, It is painted by powder.

Similarly to the first stopper 310, the second stopper 320 also has a second alignment barrier and a second alignment barrier that are spaced apart from each other by a predetermined distance so that the front ends of the bar ST are temporarily suspended, Or actuating the secondary alignment barrier to open the transfer passage.

Next, the chain-type conveyor 400 is connected between the short blaster 200 and the high-frequency thermal processing apparatus 500 so that the reinforcing bars ST discharged from the short blaster 200 (more precisely, the dust removing brush) To the device 500.

The chain type conveying conveyor 400 is conveyed so that the aligned state of the reinforcing bars ST aligned by the secondary stopper 320 is not disturbed so that uniform heat treatment is performed between the reinforcing bars ST in the high frequency heat treatment apparatus 500 I will.

To this end, the chain type conveyor 400 of the present invention includes a drive sprocket 410, a driven sprocket 420, a chain 430, and a transfer support plate 440 as shown in Figs. 5A and 5B .

At this time, the driving sprockets 410 are provided at one end portion in the longitudinal direction and are spaced apart from each other in the width direction. The driven sprocket 420 is installed at the other end portion in the longitudinal direction facing the driven sprocket 410, It is made up of a pair.

The chain 430 rotates along the endless track by being engaged with the driven sprocket 410 and the driven sprocket 420, respectively. That is, when the drive sprocket 410 rotates by the feed motor 411, power is transmitted to the driven sprocket 420 through the chain 430, and the chain 430 rotates in this state.

The conveying support plate 440 conveys the reinforcing bars ST mounted on the upper surface of the conveying supporting plate 440. The conveying supporting plate 440 has grooves for receiving the reinforcing bars ST on the upper surface thereof and both longitudinal ends thereof are fixed to the pair of chains 430 Moves along the endless track along with the chain 430.

In addition, the conveyance support plates 440 are provided at predetermined intervals along the movement direction of the chain 430, so that the plurality of conveyance support plates 440 support the reinforcing bars ST at a plurality of locations at the same time to enable stable conveyance.

Therefore, since the conveying support plate 440 is horizontally moved by the chain 430 in the state where the reinforcing bars ST are placed on the conveying supporting plate 440, when the ends of the reinforcing bars ST are kept parallel to each other, To be supplied to the heat treatment apparatus 500.

Next, the high-frequency thermal processing apparatus 500 is supplied with the length member ST passed through the shot blaster 200 and is subjected to a heat treatment. In order to prevent corrosion of the reinforcing steel (ST) coating surface and to improve abrasion resistance, Thereby heating the elongated member ST.

The high-frequency thermal processing apparatus 500 includes an annular coil 510 provided in the same number as the reinforcing bars ST being conveyed and a power supply (not shown) for applying power to the annular coil 510, Frequency heat treatment when passing through the hollow portion of the annular coil 510.

6A, an annular coil 510 is installed in the heat treatment chamber 520. An inlet guide 521 for guiding the inflow of the reinforcing bar ST is provided at one side of the heat treatment chamber 520, And a discharge guide hole 522 for guiding the discharge of the reinforcing bar ST.

Further, a vertical adjustment device 523 is provided below the heat treatment chamber 520 to adjust the height of the heat treatment chamber 520. The elevation is adjusted to the height of the reinforcing bars ST being conveyed by the rollers ROL on the front and rear sides of the heat treatment chamber 520.

6B, a plurality of annular coils 510 are arranged side by side. Since the number of the annular coils 510 is at least equal to the number of the reinforcing bars ST being conveyed at the same time, a plurality of reinforcing bars ST being conveyed are subjected to high frequency heat treatment at the same time.

6C shows a reinforcing bar ST passing through the annular coil 510. Each reinforcing bar ST is inserted into the hollow portion of the annular coil 510 and passes through the hollow portion of the annular coil 510 The induction heating is performed by the high frequency waves propagated from the annular coil 510.

Next, the paint coating apparatus 600 receives the reinforcing bars ST heated to about 200 ° C. to 300 ° C. as they pass through the high-frequency heat treatment apparatus 500 while being aligned by the second stoppers 320, ) Spray paint over the entire surface.

7A, the paint coating apparatus 600 receives the powder for coating from the powder feeder P_S and paints the reinforcing bars ST in the power booth PB. For example, the paint spraying nozzles 610, 620, a primary ground roller 630, and a secondary ground roller 640.

As shown in FIG. 7B, the paint spray nozzles 610 and 620 installed in the power booth PB are, for example, injected with the powder charged in the negative (-) direction. The powder spray nozzles 610 and 620 spray a plurality of upper side injection nozzles 610, and a plurality of lower side injection nozzles 620 installed on the upper side and spraying downward.

The number of the paint spray nozzles 610 and 620 is preferably equal to the number of the reinforcing bars ST being transported at one time, so that each of the paint spray nozzles 610 and 620 has the same number of reinforcing bars ST Thereby spraying the conductive powder. The powder is supplied through the supply hoses 611, 621.

The primary ground roller 630 is made of a metal having electrical conductivity and is positively grounded in a polarity opposite to that of the powder charged with negative polarity and the reinforcing bar ST is connected to the paint spray nozzles 610 and 620 And the reinforcing bars ST are contact-transferred and grounded at the same time.

The secondary grounding roller 640 is also made of a metal material having electrical conductivity and is positively grounded. The secondary grounding roller 640 is installed on the side where the reinforcing bar ST advances from the paint spray nozzles 610 and 620. The gap between the secondary grounding roller 640 and the primary grounding roller 630 is shorter than the length of the reinforcing bar ST Respectively.

Accordingly, in the present invention, as the reinforcing steel (ST) is fed and the powder charged in the negative (-) state is contacted with the primary ground roller 630 and the secondary ground roller 640 while being positively grounded, The painting is done.

Particularly, in the present invention, powder coating is performed in a state where the reinforcing bars ST are grounded at two places via the primary grounding roller 630 and the secondary grounding roller 640, and therefore, since there is only one grounding roller, The entire reinforcing bar ST is evenly grounded and the entire steel frame is evenly coated with powder.

Next, the cooling devices 700 and 800 cool the reinforcing bars ST painted in the paint coating device 600, and cool the painted reinforcing bars ST in a state of being induction-heated by the high-frequency heat treatment device 500 .

The cooling apparatuses 700 and 800 are provided with a primary cooling device 710 for feeding the reinforcing bars ST to the cooling conveying roller 710 in a state in which a lower portion of the cooling conveying roller 710 is locked to the water tank WT in which the cooling water is stored, (700) for spraying cooling water and a secondary cooling device (800) for spraying cooling water to the length member (ST) being conveyed through the cooling water injection nozzle.

The reinforcing bar ST is installed on the downstream side of the secondary cooling device 800 so as to dry the reinforcing bar ST wetted by the cooling water while passing through the primary cooling device 700 and the secondary cooling device 800 And a drying device 820 for applying a drag air.

As shown in FIG. 8A, the primary cooling apparatus 700 is installed between the paint coating apparatus 600 and the secondary cooling apparatus 800, not only for cooling the reinforcing bars ST, It also provides the function of a roller type conveyor.

The primary cooling apparatus 700 transports the reinforcing bar ST by the cooling conveying roller 710 rotated by the conveying motor to serve as a roller type conveying conveyor and a plurality of reinforcing bars ST A plurality of reinforcing recesses are formed on one long cooling conveying roller 710 or by using a plurality of cooling conveying rollers 710.

The primary cooling apparatus 700 is constituted by providing a water tank WT below the cooling conveying roller 710 for conveying the reinforcing bars ST as described above for cooling. The water tray WT is integrally installed inside the base frame provided with the cooling / conveying roller 710 or inserted separately.

8B shows a first cooling device 700 (see FIG. 8B) in which only a part of the cooling conveying roller 710 for conveying one reinforcing bar ST among the long cooling conveying rollers 710 is conveyed so as to simultaneously convey a plurality of reinforcing bars ST. Are shown.

As shown in the drawing, the water tank WT is filled with cooling water, and a cooling cloth 720 made of a soft cloth material such as gauze is wound around the seating groove of the cooling and conveying roller 710 in contact with the reinforcing bar ST, The water level is adjusted so that the cooling cloth 720 of the cooling feed roller 710 is partially submerged.

The water level is regulated by forming a plurality of water level control holes at a certain height from the bottom surface of the water tank (WT). When the water level is filled up to the height at which the water level control hole is formed, the cooling water is always discharged at the constant level maintain.

Therefore, when the cooling conveying roller 710 rotates, the reinforcing bars ST are conveyed, and at the same time, the cooling cloth 720 wetted with the cooling water of the water tank WT cools the reinforcing bars ST. When the cooling conveyance roller 710 rotates, the cooling cloth 720 is again wetted by the cooling water, so that cooling can be continued.

Next, as shown in FIG. 9A, the secondary cooling apparatus 800 includes a plurality of cooling water injection tubes 810 provided on the rollers for conveying the reinforcing bars ST, and each cooling water injection tube 810 is provided with a plurality of A plurality of spray nozzles for spraying cooling water are provided.

As shown in FIG. 9B, the cooling water injection pipes 810 are grouped into a plurality of groups arranged side by side, and two or more (for example, two) cooling water injection pipes 810 are provided if necessary. The cooling water injection tube 810 receives cooling water through a cooling water supply pump 811.

The drying device 820 is installed downstream of the secondary cooling device 800 on the basis of the conveying direction of the reinforcing bars ST and preferably includes a blower for blowing hot wind or the like toward the reinforcing bars ST. The blower can be installed on the side, upper part or lower part of the reinforcing bar ST.

Next, the discharging device 900 collects and discharges the reinforcing bars ST, which have been painted, through the painting and cooling processes by supplying and discharging the length ST passing through the cooling devices 700 and 800, .

It is preferable that a third stopper 330 is provided at the end of the discharging device 900. The third stopper 330 is disposed at the downstream end of the discharging device 900 to terminate the conveyance of the reinforcing bar ST And aligns the reinforcing bars (ST) that have been transferred to the terminating end.

To this end, the third stopper 330 includes a tertiary alignment barrier having a predetermined width so that the front ends of a plurality of length members ST simultaneously conveyed in the discharging device 900 are hooked and stopped.

The tertiary alignment barrier maintains a fixed posture so that the reinforcing bars ST are stuck with the first stopper 310 and the second stopper 320. The reinforcing bar ST finished by the third stopper 330 is used as the tertiary alignment barrier, Are automatically sorted.

10A, the discharging device 900 includes a discharging conveyor 910 for conveying the reinforcing bar ST passing through the cooling devices 700 and 800 to the third stopper 330 described above, and the discharging conveyor 910, And a base frame 920 for supporting the base frame 920 from below.

Particularly, according to the present invention, as shown in FIG. 10B, one side of the base frame 920 and one side of the discharge conveyor 910 are hinged to each other so that the other side of the discharge conveyor 910 can be heard (Not shown).

Therefore, when the discharge conveyor 910 is inclinedly lifted by the discharge driver 940 installed on the opposite side of the pivotal coupler 930 and lifting the other side of the discharge conveyor 910, a plurality of reinforcing bars 910 arranged on the discharge conveyor 910, (ST) are simultaneously discharged.

For example, the discharge actuator 940 may be a cylinder that operates in the vertical direction. When the discharge actuator 940 is operated, the rear of the discharge conveyor 910 is lifted with the front rotary coupler 930 as the rotation origin, Accordingly, the reinforcing bars ST which are seated on the discharge conveyor 910 are rolled along the inclined surface and are discharged.

10C, a reinforcing bar 950 provided adjacent to the side of the discharging device 900 is formed in a U shape when viewed from the side and is attached to the front portion of the discharging device 900 provided with the pivoting coupler 930 And temporarily receives the reinforcing bars ST rolled off from the discharge conveyor 910.

The reinforcing bars (ST) collected temporarily in the reinforcing bar collecting compartment 950 are bundled into a selected number of units and carried out from the painting workshop to the outside.

The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

100: loading device
200: Short Blaster
310: Primary stopper
320: Second stopper
330: Third stopper
400: Chain type conveying conveyor
500: High frequency heat treatment device
600: Paint sprayer
700: Primary cooling system (roller type conveying conveyor)
800: Secondary cooling system
900: Discharging device
ST: Length member (rebar)

Claims (11)

A loading device (100) for supplying a length of linear member (ST); A short blaster 200 that receives the length member ST from the loading device 100 and ejects hard particles onto the surface of the length member ST; A high frequency heat treatment apparatus 500 for heating the length member ST by applying a high frequency to the length member ST passing through the short blaster 200; A paint coating apparatus 600 which receives a length member ST passed through the high frequency thermal processing apparatus 500 and emits paint to the length member ST; A cooling device (700, 800) for supplying and cooling a length member (ST) passed through the paint coating apparatus (600); And a discharge device (900) for supplying and discharging a length member (ST) passed through the cooling device (700, 800); And a chain-type conveying conveyor (400) for conveying the surface-treated length member (ST) from the shot blaster (200) to the high-frequency thermal processing apparatus (500)
The chain type conveying conveyor (400)
A pair of drive sprockets 410 installed at one end in the longitudinal direction and spaced apart in the width direction at regular intervals;
A pair of driven sprockets 420 installed at the other end in the longitudinal direction and spaced apart at a predetermined interval in the width direction;
A pair of chains 430 mounted on the driving sprocket 410 and the driven sprocket 420 to rotate along an endless track and spaced apart in the width direction;
The chain member 430 is provided at predetermined intervals along the movement direction of the chain 430 and is fixed to the chain 430 so that both ends of the chain member 430 move along the endless track. And a transfer support plate (440) on which grooves for mounting are formed. The method according to claim 1,
The loading device (100)
And a plurality of support arms (111) spaced from each other along the longitudinal direction of the length member (ST) and supporting the length member (ST), wherein the support arms (111) A member accommodator 110 having a photo inclined portion 111a;
A conveying guide rail 120 spaced along the longitudinal direction of the length member ST accommodated in the member accommodating unit 110 and elongated toward the front side from the member accommodating unit 110;
And is vertically moved up and down at a lower height than the support arm 111 of the member accommodating device 110 by the closing cylinder device 133 so as to be moved forward A transfer arm 130 for transferring a plurality of length members ST at a time, in which a plurality of mounting grooves 130a on which the length member ST is mounted are formed in a long body; And
A plurality of length members ST disposed at the front side of the conveying guide rail 120 and disposed between the adjacent conveying guide rails 120 and disposed on the conveying arm 130, And a drawing roller conveyor 140 which is simultaneously raised by the descent of the cylinder device 133 and which feeds the length member ST in the longitudinal direction of the length member ST and supplies the length member ST to the shot blaster 200 Wherein the lengthwise member automatic surface treatment coating apparatus is characterized in that the lengthwise member automatic surface treatment coating apparatus is provided. The method according to claim 1,
The shot blaster (200)
A particle supplier 210 for supplying the hard particles;
A particle injector (220_T, 220_B) projecting the hard particles supplied from the particle feeder (210) at a high pressure by a motor, the projected hard particles being directed to the length member (ST) being conveyed; And
And a particle collector (230) for collecting hard particles, which are projected from the particle injectors (220_T, 220_B) and finished on the surface of the length member (ST) Surface treatment coating equipment. delete The method according to claim 1,
Further comprising a primary stopper (310) provided on a leading side of the shot blaster (200) for aligning a plurality of length members (ST) simultaneously transported,
The primary stopper 310 includes a first sorting barrier 311 having a predetermined width so that the front ends of a plurality of the length members ST being simultaneously transported are suspended to temporarily stop the transportation. And
A primary alignment barrier actuator (312) for actuating the primary alignment barrier (311) so that the primary alignment barrier (311) blocks the conveyance passage of the length member (ST) or opens the conveyance passage; Including,
When the primary alignment barrier 311 is blocked by the primary alignment barrier actuator 312, the front ends of the plurality of length members ST being transported are blocked by the primary alignment barriers 311, Characterized in that the longitudinal direction front ends of all the longitudinal members (ST) are aligned in the same line. The method according to claim 1,
Further comprising a secondary stopper (320) provided on a drawing side of the shot blaster (200) for aligning a plurality of length members (ST) being simultaneously transported,
The secondary stopper 320 includes a first stopper 320,
A second sorting barrier having a predetermined width so that the front ends of a plurality of the length members ST being transported simultaneously are all hooked to temporarily stop the transport; And
And a secondary barrier actuator for actuating the secondary alignment barrier such that the secondary alignment barrier blocks the conveyance passage of the length member (ST) or opens the conveyance passage,
The front end portions of the plurality of length members ST being conveyed when the secondary alignment barrier is the conveying passage roll closure by the secondary barrier actuator are blocked by the secondary alignment barriers, Wherein the first and second members are aligned in a collinear manner. The method according to claim 1,
The high-frequency thermal processing apparatus (500)
An annular coil 510 provided in the same number as the length member ST being transported at the same time; And
And a power supply for applying power to the annular coil 510,
And the high-frequency heat treatment is performed while the length member (ST) passes through the hollow portion of the annular coil (510). The method according to claim 1,
The paint coating apparatus (600)
Paint spray nozzles (610, 620) for spraying and supplying the charged powder;
The length member ST is installed on the side where the paint injection nozzles 610 and 620 enter the paint spray nozzles 610 and 620 to convey the length member ST and is made of a metal material, A primary grounding roller 630 for grounding in polarity; And
The length member ST is provided on the side from which the paint spray nozzles 610 and 620 are advanced so as to transfer the length member ST and is made of a metal material so that the length member ST has a polarity And a secondary ground roller (640) provided at a position where the distance from the primary ground roller (630) is shorter than the length of the length member (ST). . The method according to claim 1,
The cooling device (700, 800)
A primary cooling device 700 for conveying the length member ST through the cooling conveying roller 710 in a state where a lower portion of the cooling conveying roller 710 is locked to the water tank WT in which the cooling water is stored;
A secondary cooling device 800 for injecting cooling water into the length member ST being conveyed through the cooling water injection nozzle; And
And a drying device 820 for drying the length member ST by applying a drying wind to the length member ST passing through the primary cooling device 700 and the secondary cooling device 800 Of the length of the surface. The method according to claim 1,
Further comprising a tertiary stopper (330) arranged at the downstream end of the discharging device (900) for terminating the feeding of the length member (ST) and aligning a plurality of length members (ST) being simultaneously transported,
Wherein the third stopper (330) includes a tertiary alignment barrier having a predetermined width so that the front ends of the plurality of length members (ST) being simultaneously transported are stopped to stop feeding, Device. 11. The method of claim 10,
The discharging device (900)
A discharge conveyor 910 for transferring the length member ST passed through the cooling devices 700 and 800 to the third stopper 330;
A base frame 920 for supporting the discharge conveyor 910 from below;
A pivotal coupler (910) for pivotally connecting one side of the base frame (920) and one side of the discharge conveyor (910) with the hinge connection point as a pivot axis to make the other side of the discharge conveyor 930);
And a discharge driver (940) installed on the opposite side of the pivotal coupler (930) to lift up the other side of the discharge conveyor (910)
Wherein the discharge actuator (940) raises the discharge conveyor (910) obliquely to simultaneously discharge a plurality of length members (ST) aligned on the discharge conveyor (910).

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