Abstract:
A coating device includes a main body defining a first and a second receiving rooms, a base received in the first receiving room for supporting work-pieces, a cleaning device opposing the first receiving room, a spraying device positioned on the top of the first receiving room for spraying coating materials to the work-pieces, a rotary drum device received in the first receiving room for uniformly coating the coating materials on the work-pieces, a heating device opposing the first receiving room for heating the coating materials to form a first film, a drive device for rotating, raising and lowering the base, a transportation device positioned in the second receiving room for transporting the base from the first receiving room to the second receiving room, a vacuum coating device opposing the second receiving room for coating a second film on the work-pieces after completing coating the first film on the work-pieces.

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to coating devices and, particularly, relates to a coating device capable of coating in a normal atmospheric environment and a vacuum environment sequentially. 
     2. Description of Related Art 
     Work-pieces need to be subjected to a rotary drum coating process, which can be carried out under normal atmospheric conditions provided by a rotary drum coating device and a vacuum coating process, which needs to be carried out under vacuum conditions provided by a vacuum coating device. The Work-pieces need to be transported between the rotary drum coating device and the vacuum coating device and may be contaminated during transportation. 
     Therefore, it is desirable to provide a coating device which can overcome the limitations described above. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an isometric, exploded view of a coating device, according to an exemplary embodiment. 
         FIG. 2  is an isometric, assembled view of the coating device of  FIG. 1 . 
         FIG. 3  is a schematic cross-sectional view of the coating device of  FIG. 2 . 
         FIG. 4  is an isometric view of the coating device of  FIG. 1 , which is in a first working state. 
         FIG. 5  is similar to  FIG. 4 , but showing a second working state of the coating device. 
         FIG. 6  is similar to  FIG. 4 , but showing a third working state of the coating device. 
         FIG. 7  is similar to  FIG. 3 , but showing a fourth working state of the coating device. 
         FIG. 8  is similar to  FIG. 3 , but showing a fifth working state of the coating device. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments of the disclosure will now be described in detail, with reference to the accompanying drawings. 
     Referring to  FIGS. 1-3 , a coating device  100 , according to an exemplary embodiment, is provided to coat multi-films on work-pieces  200 . The multi-film is coated in a normal atmospheric environment and a vacuum environment sequentially. The coating device  100  includes a main body  10 . The main body  10  defines a first receiving room  11  and a second receiving room  13 . The first receiving room  11  provides the normal atmospheric environment. The second receiving room  13  is vacuumized to provide the vacuum environment. 
     The coating device  100  further includes a base  20 , a cleaning device  30 , a heating device  40 , a rotary drum device  50 , a spraying device  60 , a drive device  70 , a transportation device  80 , a vacuum coating device  90 , and a control device  300 . The base  20  is movably received in the first receiving room  11  and supports the work-pieces  200 . The cleaning device  30  and the heating device  40  are fixed on the middle of the first receiving room  11 , and clean and heat the work-pieces  200 . The rotary drum device  50  is positioned above the heating device  40  and the spraying device  60  is positioned above the rotary drum device  50 , and the rotary drum device  50  and the spraying device  60  coat a first film (not shown) on the work-pieces  200  in the normal atmospheric environment. The drive device  70  drives the base  20  to rotate in the first receiving room  11 . The transportation device  80  transports the work-pieces  200  from the first receiving room  11  to the second receiving room  13 . The vacuum coating device  90  is received in the second receiving room  13  and coats a second film (not shown) on the work-pieces  200 . The control device  300  coordinates the cleaning device  30 , the heating device  40 , the rotary drum device  50 , the spraying device  60 , the drive device  70 , the transportation device  80 , and the vacuum coating device  90 . 
     The main body  10  is a cuboid in shape and includes a bottom plate  110 , an upper plate  120 , and four side plates  130  connected with each other and positioned between the bottom plate  110  and the upper plate  120 . A division plate  140  interconnects two opposite side plates  130 , substantially parallel to the other two side plates  130 , and divides the internal space of the main body  10  into the first receiving room  11  and the second receiving room  13 . The bottom plate  110  of the first receiving room  11  defines a through hole  115 , generally at the center thereof. The upper plate  120  of the second receiving room  13  defines a rectangular first opening  121 . One of the side plates  130  opposing the division plate  140  defines a rectangular second opening  131  communicating with the first opening  121 . The width of the first opening  121  is greater than the width of the second opening  131 , therefore two opposite steps  133  are formed at edge of the second opening  131 . The division plate  140  defines a communication hole  141  communicating the first receiving room  11  with the second receiving room  13 . An electronic gate  15  is positioned on the division plate  140 , and closes and opens the communication hole  141 . A first support strip  17  bridges two sides of the second opening  131 , generally at the middle thereof and supports the heating device  40 . A second support strip  18  bridges two sides of the first opening  121 , at a side thereof distant away from the division plate  140  and supports the spraying device  60 . A pair of third support strips  19  is fixed on the opposite steps  133  and the division plate  140  and support the rotary drum device  50 . 
     The base  20  includes a support plate  21 . The support plate  21  defines a number of slots  23  for receiving the work-pieces  200 . The slots  23  are equidistantly arranged and extended along a direction substantially parallel to the lengthwise direction of the support plate  21 . The support plate  21  extending downwards a raised strip  25  from a bottom surface, generally at the center thereof. The extending direction of the raised strip  25  is the same as that of the slots  23 . The raised strip  25  is made of magnet and defines a hollow  26  thereon. 
     The cleaning device  30  includes two cleaning nozzles  31  arranged and located generally at the middle of two opposite side plates  130  perpendicular to the division plate  140 . The cleaning nozzles  31  communicate with an air source (not shown). The cleaning nozzles  31  can be adhered to the side plates  130  by various connection technologies such as glue or magnet attraction. 
     The heating device  40  is positioned on the first support strip  17 . The heating device  40  includes a circuit board  41  positioned on the first support strip  17 , and a number of heating elements  43  electrically connected to the circuit board  41  and face the first receiving room  11 . The circuit board  41  controls the connection and disconnection of the heating elements  43  and adjusts the heating temperature of the heating elements  43 . 
     The rotary drum device  50  includes a number of rollers  51  and a number of rolling drivers  52  corresponding to the rollers  51 . The rollers  51  are equidistantly spaced and rotatably bridged between the pair of third support strips  19 . A distance between each two adjacent rollers  51  is substantially equal to or slightly larger a thickness of eachwork-piece  200 . The rolling drivers  52  are secured to the third support strips  19  fixed on the steps  133 , and coupled with one end of the corresponding rollers  51 . The rolling drivers  52  drive the rollers  51  to rotate. 
     The spraying device  60  includes a number of spraying nozzles  61  corresponding to the rollers  51 . The spraying nozzles  61  are fixed on the second support strip  18  and communicate with a coating material source (not shown). The spraying nozzles  61  oppose the bottom plate  110  and spray the coating materials on the work-pieces  200 . 
     The drive device  70  includes a first rotating drive  71  and a first linear drive  72 . The first rotating drive  71  includes a first stator  711  and a first rotor  712  extending upward from the first stator  711 . One end of the first rotor  712  away from the first stator  711  defines a support groove  713  generally at the center thereof. The support groove  713  includes a first groove  714  and a second groove  715  defined on a bottom surface of the first groove  714 . The first groove  714  receives the raised strip  25 , the width of the first groove  714  is slightly greater than the width of the raised strip  25 . The width of the second groove  715  is equal to the width of the hollow  26 . The first linear drive  72  includes a first linear stator  721  and a first linear moving element  722  extending upward from the first linear stator  721 . The first linear moving element  722  is coaxial with and coupled with the first stator  712 . 
     The transportation device  80  includes a second rotating drive  81  and a second linear drive  82 . The second rotating drive  81  includes a second stator  811  and a second rotor  812  extending upward from the second stator  811 . The second stator  811  is perpendicularly disposed on the bottom plate  110  and received in the second receiving room  13 . The second linear drive  82  includes a second linear stator  821  and a second linear moving element  822  perpendicular to the second linear stator  821 . The second linear stator  821  engages one side of the second linear moving element  822 . The second linear stator  821  is coaxial with and coupled with the second rotor  812 . The second linear moving element  822  is a magnetic strip. A pressure sensor  83  is positioned on the second linear moving element  822  to detect a pressure applied on the base  20 . 
     The vacuum coating device  90  is arranged and located within the second receiving room  13  and attached to one of the side plates  130 , generally at the middle thereof. When the communication hole  141  is closed by the electronic gate  15  and the second receiving room  13  is vacuumized, the vacuum coating device  90  is opened by the control device  300 . In this embodiment, the vacuum coating device  90  can be a sputtering device, such as a chemical vapor deposition device. 
     The control device  300  includes a number of function switches, such as a first switch  301  controlling the first rotating drive  71 . A second switch  302  controlling the first linear drive  72 . A third switch  303  controlling the cleaning device  30 . A fourth switch  304  controlling the heating device  40 . A fifth switch  305  controlling the rotary drum device  50 . A sixth switch  306  controlling the spraying device  60 . A seventh switch  307  controlling the electronic gate  15 , an eighth switch  308  controlling the vacuum coating device  90 , and a ninth switch  309  for turning on or turning off the coating device  100 . 
     In assembly, one side of each work-piece  200  is received in the corresponding slot  23  of the support plate  21 . The base  20  supporting the work-pieces  200  is placed into the first receiving room  11  through the second opening  131 . The first rotor  712  of the drive device  70  is inserted into the first receiving room  11  through the through hole  115 . The raised strip  25  of the base  20  is received in the support groove  713  defined on the first rotor  712 . 
     Referring to  FIG. 4 , in a first state of the coating process, the work-pieces  200  are raised to oppose the cleaning device  30  by the first linear drive  72 . Then, the first rotating drive  71  rotates the work-pieces  200  and the cleaning device  30  is turned on to clean the work-pieces  200 . 
     Referring to  FIG. 5 , in a second state of the coating process, after the work-pieces  200  are cleaned, the control device  300  turns off the cleaning device  30 . The first rotating drive  71  rotates the work-pieces  200  to be parallel to the extending direction of the rollers  51  until the work-pieces  200  are aligned with gaps of the rollers  51 . The work-pieces  200  are raised to receive in the gapes of the rollers  51  by the first linear drive  72 . The rolling drivers  52  rotate the rollers  51  and the spraying device  60  is turned on to spray out coating materials on the work-pieces  200 . In the process of rolling of the rollers  51 , the coating materials are uniformly coated on the work-pieces  200 . 
     Referring to  FIG. 6 , in a third state of the coating process, the work-pieces  200  are lowered to the middle of the first receiving room  11 . The work-pieces  200  remain parallel to the extending direction of the rollers  51 . The heating device  40  is turned on to heat the coating materials coated on the work-pieces  200 . When a crystal of the coating materials is formed on the work-pieces  200 , a first film coated on the work-pieces  200  is obtained. 
     Referring to  FIG. 7 , in a fourth state of the coating process, the first rotating drive  71  rotates the raised strip  25  of the base  20  to be perpendicular to the electronic gate  15 . The second linear moving element  822  of the second linear drive  82  protrudes to be received between the hollow  26  and the second groove  715 . Then the first rotor  712  is actuated by the first stator  711  to separate from the base  20 , the base  20  is supported by the second linear moving element  822 . After the pressure sensor  83  detects the pressure of the base  20 , the second linear moving element  822  brings the work-pieces  200  supported on the base  20  to the second receiving room  13 . The base  20  is adhered on the second linear moving element  822  by magnet attraction. 
     Referring to  FIG. 8 , in a fifth state of the coating process, the electronic gate  15  is closed and the second receiving room  13  is vacuumed. The work-pieces  200  coated the first film is coated a second film thereon by the vacuum coating device  90 . 
     The present disclosure provides a coating device including a first receiving room and a second receiving room. The work-pieces can be coated with a first film in the normal atmospheric environment and then be coated with a second film in the vacuum environment sequentially. The work-pieces can be coated with multi-films in one coating device, and do not need to be transported from one place to another place, which ensure the quality of the work-pieces. 
     Particular embodiments are shown and described by way of illustration only. The principles and the features of the present disclosure may be employed in various and numerous embodiments thereof without departing from the scope of the disclosure as claimed. The above-described embodiments illustrate the scope of the disclosure but do not restrict the scope of the disclosure.