WO2022215790A1

WO2022215790A1 - Mobile phone back cover uv coating system

Info

Publication number: WO2022215790A1
Application number: PCT/KR2021/004979
Authority: WO
Inventors: 문제희
Original assignee: 주식회사 경우; (주)거상; 문제희
Priority date: 2021-04-06
Filing date: 2021-04-21
Publication date: 2022-10-13
Also published as: KR102292072B1

Abstract

According to the present invention, a track can be arranged in an oval or circular shape and a back cover can be UV-coated while being properly tilted for UV coating through the position of a position-variable rail installed on the upper surface of the track, thereby increasing work efficiency and maintaining an excellent and uniform coating state. The present invention comprises: a frame supported by multiple support legs; a table installed on the upper part of the frame; a planar track arranged on the upper surface of the table; an entrance/exit for supplying and discharging a back cover to be coated at one side of the track; a coating unit disposed on the left side of the entrance/exit so as to perform UV coating on the surface of the back cover; a curing unit disposed on the right side of the entrance/exit so as to perform curing by emitting UV lamp light onto the upper surface of the back cover having passed through the coating unit; a carrier mounted on the track to clamp the back cover to be coated and move the back cover along the track; and a tilting means installed on the track and carrier to switch the back cover to a vertical state, an upward state, and a horizontal state so that coating, transportation, and drying can be easily performed.

Description

Cell Phone Back Cover UV Coating System

The present invention relates to a mobile phone back cover UV coating system, and more particularly, by supplying the back cover constituting the mobile phone horizontally and undergoing tilting changes downward and upward, UV coating is mechanically performed on the surface of the back cover and then cured It relates to the provision of a mobile phone back cover UV coating system that can be discharged in a horizontal state through a process.

UV coating on the back cover constituting the mobile phone makes the surface smooth and blocks UV rays to prevent discoloration. This is because it has durability that can be used for a long time because it is strong against corrosion and performs the function of preventing scratches in life as well as ease of maintenance.

The contents of the general prior art for performing UV coating through the patent literature are as follows.

Patent Document 1 (Patent Application No. 10 - 2011 - 0030078) is a waiting section for the mold for the molding operation to the molding wait;

a transfer unit for transferring the mold from the waiting unit;

a spraying unit for spraying paint onto the mold being conveyed through the conveying unit;

It is configured to include a pressing unit for compressing the molding seated on the mold to which the paint is sprayed by the injection unit together with the mold.

Patent Document 2 (Patent No. 10-2217283-0000), in a method of coating a UV-curing resin layer on a plastic part,

removing foreign substances and oil from the surface of the plastic part; seating the plastic part on a jig after removing the foreign material and oil; removing fine dust from the surface of the plastic part seated on the jig through static elimination; coating an uncured resin layer by spraying an ultraviolet curing resin on the plastic part; pre-curing by applying infrared rays to the uncured resin layer; measuring a distance between the uncured resin layer and the UV lamp; a main curing step of curing the uncured resin layer by adjusting the light quantity and light intensity of the UV lamp based on the measured distance and the moving speed of the plastic part to form the UV curing resin layer,

In the coating of the uncured resin layer, the coating is performed by a coating robot having multiple joints, the plastic part moves in a first direction, and both the plastic part and the coating robot move toward each other. and

The main curing includes the steps of irradiating light to the uncured resin layer and measuring the degree of bending of the reflected light, and determining the degree of curing based on the degree of bending, wherein at least four UV lamps are spaced apart is disposed, the distance between each UV lamp and the uncured resin layer is different from each other, the UV lamps are controlled with different amounts of light and light intensity, and the degree of curing is determined in real time during the main curing, and the curing is performed in real time. The curing time is determined based on the judgment of the degree,

In the coating, the coating robot is characterized in that it includes the step of performing the coating while moving in the first direction in a state close to the plastic part.

In the prior art, a chipping method is often used to substantially perform UV coating on the back cover of a mobile phone. After allowing free fall for a while, curing is being performed.

As described above, when the back cover is loaded vertically, it is difficult to load smoothly because the operator must take a sitting or bent posture. will cause

In addition, since one worker continuously performs the loading operation for a long time, fatigue is aggravated and causes musculoskeletal abnormalities, which not only harms the health of the workers, but also has a high risk of changing the direction of the back cover, thereby increasing the defective rate of the finished product. problems arise.

When the UV liquid is applied to the back cover by loading it vertically, the coating liquid flows downward, causing a phenomenon such as water droplets to form at the bottom, making it difficult to maintain uniform quality after curing. It is the cause of the thickness deviation of the UV liquid.

In addition, the UV liquid is coated in a vertical state and cured by a UV lamp in a vertical state. During the curing process, the heat generated from the UV lamp moves upward due to the characteristics of the UV lamp, so after curing is completed, the temperature of the upper and lower sides is Variation is another cause of non-uniform curing quality.

For this reason, workability is not good and it is difficult to continuously maintain excellent and uniform quality after coating is completed. It is not possible.

In the present invention, as invented to solve the above problems, the frame 102 is maintained by a plurality of support legs 101 and;

a table 103 installed on the frame 101;

a plate-shaped track 105 arranged on the upper surface of the table 103;

an entrance 107 for supplying and discharging the back cover 106 to be coated on one side of the track 105;

a coating unit 108 disposed on the left side of the doorway 107 to perform UV coating on the surface of the back cover 106;

a curing unit 109 disposed on the right side of the doorway 107 so as to be cured by irradiating a UV lamp on the upper surface of the back cover 106 that has passed through the coating unit 108;

a carrier 110 mounted on the track 105 to clamp the back cover 106 to be coated so as to move along the track 105;

It includes a tilting means 150 installed on the track 105 and the carrier 110 to convert the back cover 106 into a vertical state, an upward state, and a horizontal state to facilitate coating, transport, and drying. So;

By arranging the track in an oval or circular shape and tilting the back cover suitable for UV coating through the position of the variable-position rail installed on the upper surface of the track, the purpose of improving work efficiency and maintaining an excellent and uniform coating state is achieved. It is possible.

The present invention increases supply efficiency by allowing the back cover to be supplied in the horizontal direction, and then vertically converted during UV coating and drying after being supplied in the horizontal direction, and horizontally switched again during UV curing. It has the effect of reducing worker fatigue.

The present invention enables the solution to exclude a phenomenon such as water droplets forming on the bottom of the back cover after UV coating, and during the curing process, converts horizontally to eliminate temperature deviation to enable uniform and complete curing, so UV coating efficiency of the back cover It is an invention that has various effects, such as eliminating the occurrence of defects while increasing the productivity, and continuously maintaining excellent and uniform quality while increasing productivity.

1 is a configuration diagram showing an example of a mobile phone back cover UV coating system to which the technology of the present invention is applied.

Figure 2 is a configuration diagram showing another example of a mobile phone back cover UV coating system to which the technology of the present invention is applied.

Figure 3 is a block diagram of a side cross-sectional state showing the mobile phone back cover UV coating system shown in Figure 1;

Figure 4 is a perspective view showing a back cover tilting means applied to the mobile phone back cover UV coating system to which the technology of the present invention is applied.

Figure 5 is a cross-sectional view showing the tilting means of the mobile phone back cover UV coating system to which the technology of the present invention is applied.

Figure 6 is a plan view showing a tilting means of the mobile phone back cover UV coating system to which the technology of the present invention is applied.

7 is a configuration diagram showing a state in which the back cover of the mobile phone back cover UV coating system to which the technology of the present invention is applied is lowered by the tilting means.

8 is a configuration diagram showing a state in which the back cover of the mobile phone back cover UV coating system to which the technology of the present invention is applied is raised by the tilting means.

The mobile phone back cover UV coating system 100 to which the technology of the present invention is applied can be implemented in a configuration arranged in a straight line type as shown in FIG. 1 and a configuration arranged in a circular type as shown in FIG. 2 . There will be, and the length of the straight type and the diameter of the circular type may vary depending on the product or method to be coated, and may vary according to the space or quantity to install the mobile phone back cover UV coating system 10 . .

A table 103 is provided on an upper portion of a frame 102 held by a plurality of support legs 101 , and a plate-shaped track 105 is arranged on the upper surface of the table 103 in an oval or circular shape.

An entrance 107 for supplying and discharging the back cover 106 to be coated is placed on one side of the track 105, and the supplied back cover ( A curing unit 109 for curing the UV liquid of the back cover 106 that has passed through the coating unit 108 is placed on the right side of the doorway 107 with the coating unit 108 for performing UV coating on the surface of the 106 . ) by placing

The configuration of the coating part 108 and the curing part 109 is such that the surface of the back cover 106 in a vertical state is coated by spraying UV liquid, and in the case of the curing part 109, it is converted to a horizontal state. By irradiating the UV lamp on the upper surface of the back cover 106 to cure it, it is possible to solve the problem of defects that may be caused by the curing temperature deviation.

Of course, except for the doorway 107, other parts may be configured to be closed with a cover so that they are not exposed, and it will be of course that it can be configured to operate together by installing the necessary parts in addition to coating and curing if necessary.

A carrier 110 is mounted on the track 105 so that it can move along the track 105 by clamping the back cover 106 to be coated, and the back cover 106 is provided on the track 105 and the carrier 110 . ) is configured by installing a tilting means 150 to convert it into a vertical state, an upward state, and a horizontal state to facilitate coating, transport, and drying.

The carrier 110 is provided with a plate-shaped carrier plate 111 located on the upper portion of the track 105, and can be connected to both sides of the track 105 on both front and rear sides of the carrier plate 111. A sliding roller 112 is mounted so that the carrier plate 111 can be maintained on the upper part of the track 105 .

One side of the carrier plate 111 is connected to a driving chain 113 rotating the inside of the track 105 by a driving means and a connecting pin 114 to move the carrier plate 111 along the track 105 . let it be

A hexahedral connecting block 115 is fixed to the outer direction of the carrier plate 111, and a connecting bracket 116 is connected to the connecting block 115 in a position opposite to the moving direction (↑) of the carrier plate 111. and connected to the connecting shaft 117 by connecting a cover plate 119 having a clamper 118 to the connecting bracket 116 to receive and maintain the back cover 106 .

The tilting means 150 is to turn the cover plate 119 in the vertical and horizontal directions and upwards in the forward position (↑) in the traveling direction (↑) of the track 105 and the carrier plate 111, the track ( 105) and a mover 152 installed on the carrier plate 111 to move the cover plate 119 in cooperation with the variable position rail 151.

The position variable rail 151 is a primary that converts the back cover 106 horizontally supplied between the entrance 107 and the coating part 108 on the upper surface of the track 105 downward by 90° so as to coat the back cover 106 . 2 that raises the back cover 106 at an intermediate position between the tilting zone 153 and the coating part 108 and the hardening part 109 so that the coating solution excludes a phenomenon such as water droplets forming on the bottom of the back cover 106. The secondary tilting zone 154 and the third tilting zone 155 for converting the back cover 106 back to a horizontal state so that the coating solution can be cured in the previous position of the curing part 109 are formed.

The position variable rail 151 is formed by maintaining a predetermined width on the upper surface of the track 105 with the left rail 156 and the right rail 157, and the track 105 is located at the position of the primary tilting zone 153. A position variable rail 151 is formed in the inner direction (←) from the central position of And, the third tilting zone 155 is configured by forming a position variable rail 151 at the center position of the track 105 .

Of course, it will be natural to form the variable-position rail 151 in a form that is connected naturally, rather than abruptly, so that it can be switched smoothly at the connecting positions of the first, second, and

third tilting zones

153, 154, and 155.

The mover 152 is a moving block 160 fixed to the upper surface of the moving direction (↑) front of the carrier plate 111 in a direction perpendicular to the moving direction, and a linear motion bearing 161 is embedded, A moving rod 162 is coupled to the linear motion bearing 161 .

The moving roller 165 is fixed to the inner direction (←) end of the moving rod 162 downward in the track direction, and is coupled to the variable position rail 151, and according to the position change of the variable position rail 151, the moving rod ( 162 to move inward and outward of the track 105 .

A rack 166 is formed on the upper surface of the moving rod 162 in the outer direction (→), and the rack 166 has a cover plate 119 attached to the connecting block 117 in the moving direction of the connecting shaft 115 . (↑) It engages with the pinion 167 mounted on the end so that the cover plate 119 is eventually tilted in the vertical direction, horizontal direction and upward direction by the movement of the moving rod 162 .

The bottom surface of the moving rod 162 on which the rack 166 is formed is supported by a support roller 170 mounted on the connection block 117 and configured to exclude the phenomenon of sagging downward, and the rack 166 and the pinion. (167) and the support roller 170 may be closed so as not to be exposed with a cover.

The driving chain 113 is rotated by the driving means, the carrier plate 111 connected to the driving chain 113 and the connecting pin 114 is also rotated together, and the carrier plate 111 is the upper surface of the table 103 . It moves in an elliptical or circular shape along the track 105 fixed to the .

This is because the slide roller 112 is mounted on the carrier plate 111 to engage the track 105, so the carrier plate 111 moves, and the carrier plate 111 and the connection block 115, the connection bracket ( 116) and the cover plate 119 connected to the connecting shaft 117 are also moved together.

The moving speed of the carrier plate 111 can be set to be fast or slow depending on the type of UV solution and back cover to be coated on the mobile phone back cover 106, the conditions of the coating part 108 and the curing part 109, etc. There will be, so I will not comment on these speeds.

In the above state, the operator supplies the back cover 106 to be coated at the entrance/exit 107 position to the clamper 118 provided in the cover plate 119 to be clamped. In this case, the cover plate 119 is in a horizontal state, so the back cover 106 is supplied, and the cover plate 119 moved to the entrance 107 position via the hardening unit 109 is also in a horizontal state, so the operation of discharging the back cover 106 is not it can be done easily.

As described above, when the supply of the back cover 106 by the operator at the entrance 107 is made, the UV liquid passes through the coating unit 108 sequentially by the moving carrier plate 111 on the surface of the back cover 106 . The coating is made on the surface, and some drying is made in the process of moving along the track 105, and when the final curing is made by the UV lamp while passing through the curing unit 109, the worker reaches the doorway 107. is emitted by

In the process of moving the carrier plate 111 along the track 105, the back cup cover 106 by the primary tilting zone 153 between the entrance 107 and the coating part 108 by the tilting means 150. The cover plate 119 is turned 90° downward with respect to the carrier plate 111 to facilitate coating on the surface of the The cover plate 119 is maintained upward rather than horizontally to prevent a phenomenon, and in the third tilting zone 155 before entering the hardening part 109, the cover plate 119 is horizontally arranged to provide ease of hardening and discharge. state will change.

A process of tilting the cover plate 119 in the downward, upward or horizontal direction with respect to the carrier plate 111 by the tilting means 150 is as follows.

If the variable position rail 151 is positioned in the center of the upper surface of the track 105 in a state where the cover plate 119 is maintained in the horizontal direction with respect to the carrier plate 111, the cover plate 119 is directed downward. To do this, the variable position rail 151 is formed in the inner direction from the center of the track 105, and when the cover plate 119 is to be raised upward, the variable position rail 151 is placed in the center of the track 105. formed outward from

Then, as the moving roller 165 mounted in the inner direction of the moving rod 162 coupled to the linear motion bearing 161 interposed in the moving block 160 moves, the 1st, 2nd, and 3rd tilting zones 153,154,155 It moves in and out of the track 105 while passing through it.

As described above, when the first tilting zone 153 is reached in the process of moving the moving rod 162 along the variable position rail 151 , the variable position rail 151 is formed to be biased toward the inside of the track 105 , so the moving roller Since the moving rod 162 is moved inward by 165, the pinion 167 engaged with the rack 166 formed on the moving rod 162 rotates, and the connecting shaft 117 on which the pinion 167 is mounted. ) is rotated clockwise, so the cover plate 119 connected thereto is eventually tilted by moving downward.

And, in the case of upward movement, the position variable rail 151 is formed in the outer direction of the track 105 , and as the moving rod 162 moves in the outer direction of the track 105 , the rack 166 also moves and the pinion (167) is rotated counterclockwise, so that the cover plate 119 is in the form of an upward in a horizontal state.

As described above, by changing the position of the variable-position rail 151 on the upper surface of the track 105, it is possible to tilt in various ways, such as horizontally, vertically in the sub-sea direction, and upward, etc. It is possible to determine the position of the back cover 106 according to the curing process.

Of course, the positional movement (deviation) of the variable-position rail according to the type of back cover to be coated or the coating style can be calculated and changed by calculation, so the present invention is not numerically limited thereto.

The present invention as described above arranges the tracks in an oval or circular shape and tilts the back cover appropriately for UV coating through the position of the variable-position rail installed on the upper surface of the track, thereby increasing work efficiency and providing an excellent and uniform coating state. It has the advantage of being able to maintain it.

Claims

a frame 102 maintained by a plurality of support legs 101;

a table 103 installed on the frame 101;

a plate-shaped track 105 arranged on the upper surface of the table 103;

an entrance 107 for supplying and discharging the back cover 106 to be coated on one side of the track 105;

a coating unit 108 disposed on the left side of the doorway 107 to perform UV coating on the surface of the back cover 106;

a curing unit 109 disposed on the right side of the doorway 107 so as to be cured by irradiating a UV lamp on the upper surface of the back cover 106 that has passed through the coating unit 108;

a carrier 110 mounted on the track 105 to clamp the back cover 106 to be coated so as to move along the track 105;

It includes a tilting means 150 installed on the track 105 and the carrier 110 to convert the back cover 106 into a vertical state, an upward state, and a horizontal state to facilitate coating, transport, and drying. Cell phone back cover UV coating system, characterized in that.
The method of claim 1 ;

The carrier 110 includes a carrier plate 111 positioned above the track 105;

a sliding roller 112 mounted on both front and rear sides of the carrier plate 111 and connected to both sides of the track 105 to maintain the carrier plate 111;

A connection pin 114 for connecting the carrier plate 111 to the driving chain 113 rotating the inside of the track 105 by a driving means on one side of the carrier plate 111 so that the carrier plate 111 can be moved along the track 105 . class;

a connection block 115 fixed to the outside of the carrier plate 111;

a connecting shaft 117 for connecting a connecting bracket 116 to a connecting block 115 by connecting a connecting bracket 116 to a position opposite to the moving direction (↑) of the carrier plate 111;

Mobile phone back cover UV coating system, characterized in that it includes a cover plate 119 connected to the connection bracket 116 with a clamper 118 to receive and maintain the back cover 106.
The method of claim 1 ;

The tilting means 150 is a track 105 so that the cover plate 119 can be shifted in the vertical and horizontal directions and upwards in the forward position (↑) in the traveling direction (↑) of the track 105 and the carrier plate 111. a variable position rail 151 to be installed on;

Mobile phone back cover UV coating system, characterized in that it is installed on the carrier plate (111) and includes a mover (152) that moves the cover plate (119) in cooperation with the variable position rail (151).
4. The method of claim 3;

The position variable rail 151 is a primary that converts the back cover 106 horizontally supplied between the entrance 107 and the coating part 108 on the upper surface of the track 105 downward by 90° so as to coat the back cover 106 . a tilting zone 153;

A secondary tilting zone 154 that raises the back cover 106 upward at an intermediate position between the coating part 108 and the hardening part 109 so that the coating solution excludes a phenomenon such as water droplets forming on the bottom of the back cover 106, and ;

Cell phone back cover UV coating system, characterized in that it includes a tertiary tilting zone (155) that converts the back cover (106) back to a horizontal state so that the coating solution can be cured in the entire position of the curing unit (109).
4. The method of claim 3;

The mover 152 includes a moving block 160 fixed to the upper surface of the carrier plate 111 in the forward direction (↑);

a linear motion bearing 161 embedded in the moving block 160 in a direction perpendicular to the moving direction;

a moving rod 162 coupled to the linear motion bearing 161;

The moving rod 162 is fixed to the inner side (←) end of the moving rod 162 in the track direction so as to be coupled with the variable position rail 151 and the moving rod 162 according to the position change of the position variable rail 151 is moved to the track 105 . ) and a moving roller 165 that moves in the inward and outward directions;

a rack 166 formed on the upper surface of the moving rod 162 in the outward direction (→);

The cover plate 119 is mounted at the end of the moving direction (↑) of the connecting shaft 115 maintained in the connecting block 117 and engaged with the rack 166 so that the cover plate 119 is moved by the movement of the moving rod 162 . Cell phone back cover UV coating system, characterized in that it comprises a pinion (167) for tilting in the vertical direction, horizontal direction and upward direction.
5. The method of claim 4;

The variable position rail 151 includes a left rail 156 and a right rail 157 formed by maintaining a width as wide as the moving roller 165 on the upper surface of the track 105;

A position variable rail 151 is formed in the inward direction (←) from the central position of the track 105 in the position of the primary tilting zone 153;

In the secondary tilting zone 154, a position variable rail 151 is formed in the outward direction (→) at the central position of the track 105;

A mobile phone back cover UV coating system, characterized in that the position variable rail 151 is formed at the center position of the track 105 in the third tilting zone 155 .
6. The method of claim 5;

Mobile phone back cover UV coating, characterized in that it further comprises a support roller 170 mounted on the connection block 117 to support the rack 166 on the bottom surface of the moving rod 162 to prevent sagging in the downward direction. system.