KR20090118721A - Coating system for the case of portable terminal - Google Patents

Abstract

PURPOSE: A coating system for a case of a portable terminal is provided to move a jig, on which cases of portable terminals are placed, along an automation line. CONSTITUTION: A coating system for a case of a portable terminal comprises: a primer preheating zone(630) for preheating cases; a primer booth(640) for coating the case; a primer drying zone(650) for drying the primer-coated cases; a primer cooling zone(660) for cooling the coated cases; a top preheating zone(680) for preheating the case to coat a top; a top booth(690) for coating the top on the cases; and an UV chamber(700) for curing the surface of the case with UV.

Description

Coating system for the case of portable terminal {Coating system for the case of portable terminal}

The present invention relates to a coating system of a case for a mobile terminal, and more specifically, to a surface of a case for a mobile terminal such as a mobile phone or a PDA. To a moving and coating system.

In general, a personal portable terminal such as a mobile phone or a PDA has a PCB embedded in the case.

Such a case for a mobile terminal improves the merchandise by forming various coating layers on the surface thereof, and also prevents surface scratches.

On the other hand, in the case of forming a coating layer on the surface of the case for the mobile terminal is typically subjected to various coating processes such as undercoat, drying, top coat.

However, in the related art, each process is performed individually, and in order to perform another process, the process depends on the manual process from the previous process section to the next process section, thereby increasing the overall coating time and increasing productivity. There is a problem such as deterioration.

Accordingly, the present invention is to solve these problems, the present invention when performing a plurality of processes for coating the case for a mobile terminal, the jig in the state of mounting the case for a mobile terminal along the automation line coating operation It is an object of the present invention to provide a coating system of a case for a portable terminal which can improve productivity by eliminating the need for manual work and enabling a continuous work process.

The present invention for achieving the above object;

A preheating zone for preheating the case for the mobile terminal; A bottom booth which performs the bottom coat on the surface of the case for the mobile terminal which has passed through the bottom coat preheating zone; An undercoat hot air drying zone for drying the undercoat coating formed on the surface of the case for the mobile terminal through the undercoat booth; A bottom cooling zone for cooling to lower the surface temperature of the case for the mobile terminal which has passed through the bottom heating hot air drying zone; A pre-heating preheating zone for preheating the case for the mobile terminal which has passed through the top-setting antistatic booth; A top coat booth for performing top coat coating on a surface of the case for a mobile terminal which has passed through the top coat preheating zone; Characterized in that it consists of a top UV room for curing the surface of the case for a mobile terminal through the top booth.

And a lower static electricity booth to remove the surface static electricity of the case for the mobile terminal before entering the lower preheating zone; The top anti-static booth for removing static electricity formed on the surface of the case for the mobile terminal passing through the lower road cooling zone is further installed.

In addition, a first top drying zone for drying the top coating formed on the surface of the mobile terminal case passing through the top booth is further installed between the top booth and the top UV room, and the case for the mobile terminal passing through the UV room is further provided. The upper phase cooling zone to cool is further installed.

In addition, a second top drying zone for drying the top coating formed on the surface of the case for a mobile terminal through the top booth; A top cooling zone for cooling the case for the mobile terminal having passed through the second top drying zone may be further installed.

At this time, the case for the portable terminal is mounted on the jig is put into the loading / unloading zone; The bottom antistatic booth, the bottom preheating zone, the bottom coat booth, the bottom coat drying zone, the bottom coat cooling zone, the top coat antistatic booth, the top coat preheating zone, the top coat booth, the top coat UV room, the top coat drying zone, the top coat The cooling zone and the loading / unloading zone are characterized by being moved along an automation line made by one conveyor.

The method may further include a post-treatment process by an air shower that post-processes the case for the portable terminal unloaded from the loading / unloading zone through the upper cooling zone.

At this time, the jig is provided with a fastening portion coupled to the upper end of the spindle is installed in the lower center of the body, the edge of the body is provided with a plurality of engaging projections are mounted radially extending from the center to mount the case for the mobile terminal, the body The lower portion is characterized in that a plurality of legs supporting the body is provided.

In addition, the fastening portion is provided in the lower portion of the center of the body, the end of the spindle is inserted and compressed and a fastening groove is formed therein is formed in the engaging groove, the engaging jaw is fitted to the end of the spindle is inserted into the fastening groove It is characterized in that the locking groove is formed.

In addition, the case for the portable terminal is characterized in that the external case of the mobile phone or PDA.

As described above, according to the present invention, a plurality of processes that have to go through coating the case for a mobile terminal are sequentially performed along an automation line, so that manual coating is possible without manual work by an operator, thereby improving productivity. There is an advantage to improve.

Hereinafter, with reference to the accompanying drawings, the coating system of the case for a mobile terminal according to the present invention will be understood by the embodiments described in detail.

At this time, Figure 1 is a schematic diagram of a coating system of a case for a portable terminal according to the present invention, Figure 2 is a perspective view showing a coating jig used in the coating system of a case for a portable terminal according to the present invention, Figure 3 is a present invention 4 is a front view illustrating a coating jig used in a coating system of a mobile terminal case according to the present invention, and FIG. One drawing.

1 to 4, the coating system of the case for a portable terminal according to the present invention uses a jig 100.

The upper end of the spindle 200 is fastened to the center lower portion of the jig 100 made of such a disc shape, and the edge of the jig 100 protrudes radially from the center and a plurality of obstacles whose ends are bent upwardly. Group 130 is provided.

In this case, the coating process is applied to the surface of the case 300 for the portable terminal through each process described below while being transported along an automation line by a conveyor (not shown) when the case 300 for the portable terminal is coated according to the present invention. Done.

The portable terminal case 300 includes all cases such as a mobile phone or a PDA that can be carried by an individual and used for communication.

Here, looking at the configuration of the jig 100 in detail, the fastening portion 120 is coupled to the upper end of the spindle 200 is provided in the lower center of the disc-shaped body 110, the edge of the body 110 There is provided with a plurality of engaging projections 130 protruding radially extending from the center of the end is bent upward.

Due to such a structure, each of the engaging protrusions 130 is mounted with a case 300 for a mobile terminal such as a mobile phone or a PDA.

In this case, the lower portion of the body 110 is provided with a plurality of legs 140 supporting the body 110 so that the body 110 is located above a certain height on the ground (地面).

Furthermore, the configuration of the jig will be described in more detail, and the jig 100 is provided with a plurality of legs 140 while maintaining a predetermined distance below the edge of the body 110.

Since the leg 140 is provided, when the jig 100 is placed on the work table 500, the body 110 of the jig 100 is positioned at a relatively high position above the work table 500. .

Therefore, when the case 300 for the portable terminal is mounted on the engaging protrusion 130 of the jig 100, it is possible to easily mount it even without the jig 100 mounted on the spindle 200.

In this case, the leg 140 is preferably configured to have a predetermined length so that the lower end of the portable terminal case 300 does not touch the work table 500 when the portable terminal case 300 is mounted.

On the other hand, the fastening portion 120 provided in the lower center of the body 110 of the jig 100 is made of a structure that can be easily fastened without any other intermediate means when the upper end of the spindle 200 is fastened.

To this end, the fastening part 120 is formed with a circular fastening groove 122 into which the upper end of the spindle 200 can be seated, and inside the fastening groove 122 when the spindle 200 rotates. The rotational force is transmitted to the jig 100, and at the same time, a straight (-) type locking jaw 124 is formed to prevent the jig 100 from being idle.

At this time, the end of the spindle 200 is formed with a straight (-) type locking groove 202 is fitted with the locking jaw 124.

With this structure, the jig 100 is inclined to one side only by inserting the upper end of the spindle 200 into the fastening groove 122 of the fastening part 120 formed at the center lower portion of the jig 100. It does not have an advantage that does not tilt to one side by the fastening groove 122.

In this case, the fastening part 120 protruding downward in the center of the body 110 has the same length as the leg 140 provided under the edge of the body 110 or is formed relatively short. If the length of the fastening part 120 is relatively longer than that of the leg 140, the jig 100 may be placed in an unstable state on the work table 500. This is because it cannot be stably mounted on the jig 100.

On the other hand, when mounting the case 300 for the portable terminal to the engaging projection 130 of the jig 100, the case for the portable terminal 300 is a vibration that may occur when the jig 100 is moved or rotated In order to minimize the effects of vibration or vibration, it should be mounted stably.

To this end, the case 300 for the portable terminal is mounted on the locking protrusion 130 of the jig 100 in a state where it is mounted on a separate fixing member 400.

At this time, the fixing member 400 is fixed to the inner surface of the case 300 for the portable terminal on one surface thereof, the fitting portion 410 for fitting the engaging projection 130 of the jig 100 to the other surface protrudes Is formed.

More specifically, fastening jaws 310 formed at both edges of the case 300 for the mobile terminal are fastened to both edges of the fixing member 400.

Of course, the shape of the fixing member 400 is to be made according to the shape of the case 300 for the portable terminal to be coated can be made in a variety of shapes.

In this case, the fitting portion 410 is provided with a downward fitting groove 412 in order to facilitate fastening to the locking protrusion 130 of the jig 100 that is placed on the work table 500.

In this case, the fitting groove 412 is preferably formed so that the angle formed with the body 110 of the jig 100 is 45 ~ 90 degrees, which is the case 300 for the portable terminal mounted on the jig 100 By being mounted so as to form an angle of 45 to 90 degrees with the body 110 of the jig 100, the paint coated on the surface of the case 300 for the mobile terminal may naturally flow down, and the paint may be coated to a certain thickness. This is because the surface state of the coating material to be coated can be improved.

Therefore, in the state in which the jig 100 is placed on the work table 500, the engaging protrusion 130 of the jig 100 fixes the fitting groove 412 of the fixing member 400 in a state in which the case 300 for the portable terminal is fixed. ) And fitted to the bottom when the fixing member 400 is mounted.

As described above, the case 300 for the portable terminal is mounted on the jig 100 by using the fixing member 400, so that the case 300 for the portable terminal stably even when the jig 100 is moved and rotated. It is possible to minimize the failure rate even if the support is carried out to the coating.

Hereinafter, the configuration of the coating system of the case for a mobile terminal according to the present invention will be described in detail.

The mobile terminal case 300 is placed in the loading / unloading zone 610 while being mounted on the jig 100 to move and coat the paint on the surface of the mobile terminal case 300.

In this case, the loading / unloading zone 610 is a section for inserting or retrieving the case 300 for the portable terminal, and the spindle 200 to which the jig 100 on which the case 300 for the portable terminal is mounted is fixed. It is arranged and moved at regular intervals.

As described above, the case 300 for the portable terminal, which starts moving in the loading / unloading zone 610, moves to the lower static electricity booth 620.

The lower antistatic booth 620 is provided with an antistatic gun (gun) therein to remove the static electricity formed on the surface of the case 300 for a mobile terminal.

In this case, when the static electricity formed on the surface of the portable terminal case 300 is not removed, a defect rate may be increased during coating even when dust or the like adheres to the surface of the portable terminal case 300.

On the other hand, the case 300 for the mobile terminal, which has passed through the lower static elimination booth 620, is moved to the lower channel preheating zone 630.

The undercoat preheating zone 630 preheats the case 300 for the portable terminal under a temperature condition of 40 to 50 ° C., thereby improving compatibility with the paint during undercoat coating. In this case, since the compatibility with the paint may be weak when the temperature of the underpass preheating zone 630 is irregular, the temperature should be kept constant.

In addition, the case 300 for the mobile terminal which has passed through the lower preheating zone 630 is moved to the lower booth 640.

The undercoat booth 640 is a wet coating booth which sprays a wet paint to apply a base coating on the surface of the case 300 for a mobile terminal. The air supply booth is formed at a speed of 900 rpm and an exhaust at 1200 rpm. Is 55 ~ 65%, temperature is maintained at 18 ~ 25 ℃ conditions.

As described above, the case 300 for the mobile terminal which has passed through the undercoat booth 640 moves to the underpass hot air drying zone 650.

The undercoat hot air drying zone 650 is to dry the undercoat coating formed on the surface of the case 300 for a mobile terminal using hot air, and lasts for 20 minutes under a temperature condition of 70 ℃.

At this time, it should be noted that the failure to maintain the temperature conditions may lead to the coating coating reliability and color deviation.

In addition, the case 300 for the mobile terminal which has passed through the undercoat hot air drying zone 650 is moved to the undercoat cooling zone 660.

The lower cooling zone 660 cools the case 300 for the portable terminal to lower the surface temperature of the case 300 for the portable terminal.

At this time, the undercoat cooling zone 660 is maintained at a temperature condition of 20 ~ 30 ℃. In particular, when the surface temperature of the case 300 for the portable terminal is high due to the high cooling temperature of the underpass cooling zone 660, trouble may occur when the top coat is performed.

On the other hand, the case 300 for the mobile terminal which has passed through the lower road cooling zone 660 is moved to the upper static elimination booth 670.

The top antistatic booth 670 removes static electricity that is formed on the surface of the case 300 for a mobile terminal in which an antistatic gun is provided to form a bottom coat.

In this case, when the static electricity formed on the surface of the case 300 for the portable terminal is not removed, dust or the like may be caught on the surface of the case 300 for the portable terminal.

On the other hand, the case 300 for the mobile terminal which has passed through the top antistatic booth 670 is moved to the top preheating zone 680.

The top coat preheating zone 680 preheats the case 300 for the portable terminal under a temperature condition of 30 to 40 ° C., thereby improving compatibility with the paint during top coat coating. In this case, since the compatibility with the paint may be weak when the temperature of the upper temperature preheating zone 680 is irregular, the temperature should be kept constant.

In addition, the case 300 for the mobile terminal which has passed through the upper preheating zone 680 is moved to the upper booth 690.

The top coat booth 690 is a wet coating booth that sprays a wet paint onto the surface of the case 300 for the mobile terminal. The top coat booth 690 is configured to supply air at 900 rpm and exhaust at 1200 rpm. Is 55 ~ 65%, temperature is maintained at 18 ~ 25 ℃ conditions.

In addition, the case 300 for the mobile terminal which has passed through the top booth 690 is moved to the first top drying zone 695 or the second top drying zone 710, which is the surface of the case 300 for the portable terminal. It is determined by the type of paint that is coated on.

First, when the type of paint coated on the surface of the portable terminal case 300 is an ultraviolet curing paint (UV; Ultra Violet), the portable terminal case 300 having passed through the top booth 690 is dried on the first phase. Is moved to zone 695.

The first top drying zone 695 may dry the top coating formed on the surface of the case 300 for the mobile terminal, and may last for 5 minutes under a temperature condition of 50 to 60 ° C. At this time, it should be noted that the drying may not be performed properly if the temperature and time conditions are not maintained.

As described above, the case 300 for the mobile terminal, which has passed through the first top drying zone 695, is moved to the top UV room 700.

The upper UV room 700 serves to cure the surface of the case 300 for a mobile terminal. The top UV room 700 maintains a temperature of 45 to 55 ° C., and the case 300 for a mobile terminal. By applying an average energy of 900 ~ 1200j / ㎠ for 2 to 3 minutes by using an ultraviolet lamp on the surface of the), the surface of the case 300 for a mobile terminal is cured.

In this case, the top UV room 700 may be discolored of the top coat when the irradiation amount of the UV lamp is insufficient, and care should be taken because over-curing may occur when the temperature is high.

On the other hand, when the type of paint coated on the surface of the portable terminal case 300 is a urethane type, the portable terminal case 300 passed through the top booth 690 is moved to the second upper drying zone 710. do.

The second top drying zone 710 serves to dry the top coating formed on the surface of the case 300 for a mobile terminal. In this case, when the case 300 for the portable terminal is plastic, the temperature is 80 ° C. Under the conditions, drying is continued for 30 to 60 minutes, and when the case 300 for a portable terminal is a metal series, drying is continued for 40 to 60 minutes under a temperature condition of 150 ° C. At this time, it should be noted that the drying may not be performed properly if the temperature and time conditions are not maintained.

In this way, the case 300 for the mobile terminal, which has passed through the top coat UV room 700 or the second top coat drying zone 710, is moved to the top coat cooling zone 720.

The upper cooling zone 720 is made for 2 minutes under the temperature condition of 20 ℃. If the surface of the case 300 for the portable terminal is not cooled, a failure may occur during handling.

On the other hand, the case 300 for the mobile terminal having passed through the upper-end cooling zone 720 is moved to the loading / unloading zone 610, the case for the portable terminal is coated in the state mounted on the jig 100 The 300 is unloaded (separated) from the spindle 200 while being mounted on the jig 100.

Thereafter, the jig 100 is again mounted on the spindle of the air shower 800 to deodorize while being circulated by the conveyor belt 810 and separated from the jig to perform a post-treatment process such as packaging.

As described above, all the processes are performed along an automation line made by one conveyor, and the case 300 for the portable terminal is mounted on the jig 100 and sequentially moved while being moved by the conveyor.

Although the preferred embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to be substantially equivalent to the embodiment of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

The present invention relates to a coating system of a case for a mobile terminal, and more specifically, to a surface of a case for a mobile terminal such as a mobile phone or a PDA, when a coating solution is coated on a jig in which the case for the mobile terminal is placed along an automation line. To a moving and coating system.

1 is a configuration diagram of a coating system of a case for a portable terminal according to the present invention;

Figure 2 is a perspective view showing a coating jig used in the coating system of the case for a mobile terminal according to the present invention.

Figure 3 is a front view showing a coating jig used in the coating system of the case for a mobile terminal according to the present invention.

4 is a view illustrating a state in which a case for a portable terminal is mounted on a coating jig used in a coating system of a case for a portable terminal according to the present invention;

*** Explanation of symbols for main parts of drawing ***

100: jig 110: body

200: spindle 300: case for mobile terminal

610: loading / unloading zone 620: the bottom antistatic booth

630: underpass preheating zone 640: underpass booth

650: underpass hot-air drying zone 660: underpass cooling zone

670: Top coat booth 680: Top coat preheating zone

690: top booth 695: first top dry zone

700: top UV light room 710: second top drying zone

720: top cooling zone

Claims (9)

A preheating zone for preheating the case for the mobile terminal; A bottom booth which performs the bottom coat on the surface of the case for the mobile terminal which has passed through the bottom coat preheating zone; An undercoat hot air drying zone for drying the undercoat coating formed on the surface of the case for the mobile terminal through the undercoat booth; A bottom cooling zone for cooling to lower the surface temperature of the case for the mobile terminal which has passed through the bottom heating hot air drying zone; A pre-heating preheating zone for preheating the case for the mobile terminal which has passed through the top-setting antistatic booth; A top coat booth for performing top coat coating on a surface of the case for a mobile terminal which has passed through the top coat preheating zone; The coating system of a case for a mobile terminal, characterized in that consisting of a top UV room for curing the surface of the case for a mobile terminal through the top booth. The method of claim 1, A bottom antistatic booth for removing surface static electricity of the case for the mobile terminal before entering the bottom preheating zone; And a top antistatic booth for removing static electricity formed on the surface of the case for the mobile terminal through the lower cooling zone. The method of claim 1, Between the top booth and the top UV room, a first top drying zone for drying the top coat formed on the surface of the case for the mobile terminal passing through the top booth is further installed, and the case for the mobile terminal passing through the UV room is cooled. Case for a mobile terminal, characterized in that the top cooling zone is further installed. The method of claim 1, A second top drying zone for drying the top coating formed on the surface of the case for the mobile terminal passing through the top booth; The coating system of a case for a mobile terminal, characterized in that a top cooling zone for cooling the case for a mobile terminal having passed through the second top drying zone. The method according to claim 3 or 4, The case for the portable terminal is mounted on a jig and put into a loading / unloading zone; The lower antistatic booth, the lower heat preheat zone, the lower booth, the lower dry zone, the lower cool zone, the upper antistatic booth, the upper heat preheat zone, the upper booth, the upper UV room, the upper dry zone, the upper coat A coating system for a case for a portable terminal, characterized in that the cooling zone and the loading / unloading zone are moved along an automation line made by one conveyor. The method of claim 5, And a post-treatment process by an air shower for post-processing the case for the portable terminal unloaded from the loading / unloading zone via the upper cooling zone. The method of claim 5, The jig is provided with a fastening portion coupled to the upper end of the spindle is installed in the center of the lower body, the edge of the body is provided with a plurality of engaging projections are mounted radially extending from the center for mounting the case for the mobile terminal, the lower part of the body The coating system of a case for a mobile terminal, characterized in that a plurality of legs supporting the body is provided. The method of claim 7, wherein The fastening part is provided at a lower portion of the center of the body, and an end of the spindle is inserted and compressed and a fastening groove having a locking jaw formed therein, and a locking groove into which the locking jaw is fitted at an end of the spindle inserted into the fastening groove. Coating system of a case for a mobile terminal, characterized in that formed. The method of claim 1, The mobile terminal case is a coating system for a mobile terminal case, characterized in that the outer case of the mobile phone or PDA.

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