JP5647940B2 - Mobile terminal casing coating apparatus and mobile terminal casing coating method using the same - Google Patents

Description

  The present invention relates to a mobile terminal casing coating apparatus and a mobile terminal casing coating method using the same, and more specifically, while eliminating the waste of paint when coating a mobile terminal casing, The present invention relates to a mobile terminal casing coating apparatus capable of reducing a coating space and further reducing air-conditioning energy, and a mobile terminal casing coating method using the same.

  In general, when painting a workpiece, spray-type painting is employed in which the workpiece is conveyed by a conveyor and sprayed in the form of a mist by a spray gun toward the conveyed workpiece.

  That is, in spray-type painting, while supplying paint to the spray gun head using a syringe, pump, etc., this paint is atomized by air and sprayed toward the work, thereby The paint was applied to the work and applied.

  At this time, when painting the surface of a three-dimensional work such as the case of a portable terminal such as a portable telephone, a mobile personal computer, or a tablet terminal, the plane portion and the side portion must be painted. Therefore, the spray gun is moved to various angles and the paint is sprayed from multiple angles to the workpiece, or the paint is sprayed to the workpiece while changing the tilt of the workpiece with respect to the spray gun. It was.

  Conventionally, however, it has been pointed out that such a spray-type coating method in which paint is atomized and sprayed onto a workpiece is wasteful of paint.

  That is, in general, in the spray-type coating method, it is said that the proportion of the paint sprayed from the spray gun that actually deposits on the work is about 20 to 30%, so the remaining paint is wasted. The problem is pointed out.

  In addition, since paint contains harmful substances, it is necessary to collect the paint mist generated in the paint booth without depositing on the work. Generally, a method of exhausting indoor air to the outside while collecting paint mist with a filter while supplying an air flow in a certain direction and supplying air into the coating chamber is generally employed.

  For this reason, conventionally, energy for air conditioning was required to exhaust indoor air to the outside of the room and supply air into the painting chamber. At this time, the spray gun was moved to various angles. When the method of spraying paint on the workpiece from a plurality of angles is adopted, there is a problem that the energy for air conditioning must be increased because the painting booth needs to be enlarged.

  Therefore, recently, a method of painting a work by ink jet has begun to be proposed. And in this ink jet method, the ink filled in the ink chamber is made to land on the object by pushing out from the nozzle, and this is a method of painting the object, so unlike the method of atomizing and spraying the paint, There is an advantage that it is possible to eliminate waste of paint.

  In addition, in the ink jet method, there is no ink that does not land on the target, and no ink mist or the like is generated in the painting booth, and the ink to be used contains almost no harmful organic solvent. This eliminates the need to collect the ink and thus reduces the air-conditioning energy. Therefore, the problem of spray painting can be solved by painting the workpiece by the ink jet method having these advantages. Is possible.

JP 2011-201113 A JP 2003-340351 A JP 2005-74666 A JP 2007-175665 A JP 2007-175669 A JP 2007-177573 A JP 2007-177964 A JP 2007-196198 A JP 2009-50804 A JP 2009-50805 A

  However, in the ink jet method, ink can be dropped only in the vertical method, so when painting a three-dimensional work such as the case of the portable terminal described above, it is possible to paint a flat part, but the side surface The problem is that the part cannot be painted.

  Therefore, the present invention eliminates the waste of paint, reduces the painting space, and accordingly, enables the painting of the casing for the portable terminal while suppressing the energy for air conditioning. It is an object of the present invention to provide a casing coating apparatus and a method for coating a casing for a mobile terminal using the same.

The portable terminal casing coating apparatus of the present invention,
A portable terminal casing coating apparatus for coating a portable terminal casing by an inkjet method,
A slide base;
A work transfer device mounted on the slide base so as to be movable on the slide base;
An inkjet device disposed in the course of the track of the workpiece transfer device;
A UV curing device disposed on the front side of the inkjet device in the course of the track of the workpiece transfer device;
A control unit for controlling the operation of the entire apparatus,
The workpiece transfer device is
A work transfer device main body comprising a slide part mounted on the slide base and movable in the front-rear direction on the slide base; and a support part connected to the slide part;
A first stage that is pivotally connected to the support portion in a vertical direction; and a second stage that is pivotally connected to the upper side of the first stage and has a workpiece attached to the upper surface thereof. A workpiece supply table provided;
The inkjet device
A column disposed at a position that does not hinder the movement of the workpiece transfer device,
A printer head mounted on the column so as to be movable up and down in an arrangement capable of landing ink on a work attached to a second stage in the work transfer device;
The UV curing device includes UV irradiation means for irradiating the workpiece with UV to cure the ink that has landed on the workpiece in the inkjet device.

And in the coating method of the casing for a portable terminal of the present invention using this coating apparatus,
With the work being attached to the second stage, while reciprocating the work transport device on the slide base,
By coating ink on the flat part of the work by the inkjet device, the flat part of the work is painted,
The first stage and the second stage are rotated by a predetermined angle to change the direction of the workpiece with respect to the printer head, and ink is landed on the workpiece while the printer head is raised by a predetermined length. Paint the side,
Thereafter, the ink landed on the workpiece by the ink jet apparatus is cured by UV irradiation by the UV irradiation means.

  In the portable terminal casing coating apparatus according to the present invention, a work transfer device for mounting and transferring a work is constituted by a work transfer device main body and a work supply table, and the work transfer device main body is moved back and forth on the slide base. And a support portion connected to the slide portion. The work supply table is composed of a first stage and a second stage. The first stage is connected to the support portion. The second stage is connected so as to be rotatable in the vertical direction, and the second stage is connected above the first stage so as to be rotatable in the horizontal direction.

  Further, the ink jet apparatus has a printer head mounted on a column that is disposed at a position that does not hinder the movement of the work conveying apparatus so as to be movable up and down.

  According to this configuration, the present invention rotates the first stage and the second stage by a predetermined angle to change the orientation of the workpiece with respect to the printer head, and raises the printer head by a predetermined length, and in this state, The side part of the work can be painted by landing the ink, which solves the disadvantages of the ink jet system that can only drop ink in the vertical direction, It is possible to paint the entire surface of a three-dimensional workpiece.

  Therefore, compared with the conventional painting apparatus and painting method for painting a workpiece with a spray gun, the painting space can be reduced, and ink that does not deposit on the workpiece can be eliminated. As a result, it is not necessary to collect ink that does not adhere to the workpiece, and it is not necessary to provide equipment for collecting ink, thereby reducing costs.

  Therefore, according to the present invention, the surface of a three-dimensional work such as a casing of a portable terminal can be painted while reducing a paint space and suppressing waste of paint and energy for air conditioning. It becomes possible.

It is a perspective view which shows the whole coating device of the housing | casing for portable terminals of this invention. It is a side view for demonstrating the inside of the painting space in the coating device of the housing | casing for portable terminals of this invention. It is a top view for demonstrating the inside of the painting space in the coating device of the housing | casing for portable terminals of this invention. It is a figure for demonstrating the workpiece conveyance apparatus in the coating device of the housing | casing for portable terminals of this invention. It is a block diagram for demonstrating the control system of the coating device of the housing | casing for portable terminals of this invention.

  The portable terminal casing coating apparatus of the present invention has a slide base, and a work conveying device is mounted on the slide base so as to be movable on the slide base.

  In addition, the mobile terminal casing coating apparatus of the present invention includes an ink jet device, and the ink jet device is disposed on the track of the work transfer device.

  Further, the portable terminal casing coating apparatus of the present invention has a UV curing device, and this UV curing device is disposed on the front side of the ink jet device in the course of the track of the work transfer device. Yes.

  In addition, the coating apparatus for the portable terminal casing of the present invention has a control unit, and this control unit controls the operation of the entire apparatus.

  The work transfer device includes a work transfer device main body and a work supply table, and the work transfer device main body is mounted on the slide base and is slidable on the slide base in the front-rear direction. And a support part provided continuously with the slide part.

  On the other hand, the work supply table has a first stage and a second stage, and the first stage is disposed on the front side of the support part constituting the work transfer device main body so as to be rotatable in the vertical direction. Yes.

  The second stage is connected to the upper side of the first stage so as to be rotatable in the horizontal direction, and a work is attached to the upper surface thereof.

  The ink jet device disposed in the course of the work transport device includes a support column disposed at a position that does not hinder the movement of the work transport device, and a printer head mounted on the support column so as to freely move up and down. The printer head is mounted on the support column in such a manner that ink can land on the work attached to the second stage in the work transport device.

  Further, the UV curing device includes UV irradiation means for curing the ink that has landed on the work in the ink jet device by irradiating the work with UV.

  And in the coating method of the housing | casing for portable terminals of this invention using this coating device, a workpiece conveyance apparatus is reciprocated on a slide base in the state which attached the workpiece | work to the 2nd stage.

  Then, in the process of reciprocating the workpiece transfer device, the ink is landed on the planar portion of the workpiece by the ink jet device, thereby coating the planar portion of the workpiece.

  After or before that, the first stage and the second stage are rotated by a predetermined angle to change the orientation of the work with respect to the printer head, and the printer head is raised by a predetermined length to a position where the printer head does not contact the work. In this state, ink is landed on the work from the printer head, thereby painting the side surface of the work.

  After that, the ink landed on the work is cured by UV irradiation by UV irradiation means.

  Here, when painting the side portion of the workpiece, the diameter of the ink dropped from the printer head should be larger than the diameter of the ink dropped onto the plane portion of the workpiece, so that there is a gap between the dropped inks. Prevents the occurrence of a beautiful finish.

  The ink used in the ink jet apparatus may be an ink that does not contain an organic solvent. This eliminates the step of heating and drying the ink that has landed on the workpiece, thereby reducing the cost.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a portable terminal casing coating apparatus according to the present invention (hereinafter simply referred to as “coating apparatus”) will be described with reference to the drawings. FIG. 1 is a perspective view showing an appearance of the coating apparatus of the present embodiment. It is.

  In the drawing, reference numeral 1 denotes the coating apparatus of the present embodiment. The coating apparatus of the present embodiment has an apparatus main body 2 having a power supply device, a control unit, various operation units, and the like. Is provided with a casing 3 made of transparent glass or the like, and the inside of the casing 3 is used as a coating space, and the workpiece is coated in the casing 3.

  Here, the coating space will be described. FIGS. 2 and 3 are diagrams for explaining the coating space in the casing 3, FIG. 2 is a side view, and FIG. 3 is a top view. Indicates the state. In the figure, 301 is a bottom surface in the casing 3, and in the figure, W is a casing of a portable terminal as a work. In this embodiment, the work W is a casing of a tablet-type portable terminal. .

  In this embodiment, a slide base is disposed in the casing 3. That is, in the figure, reference numeral 4 denotes a slide base. In this embodiment, the slide base 4 has an elongated shape, and a work transfer device is mounted on the slide base 4. It can be reciprocated on the slide base 4 in a mounted state.

  Here, the work transfer device will be described. In FIGS. 2 and 3, reference numeral 5 denotes a work transfer device, and FIG. 4 is a perspective view schematically showing the work transfer device 5. In this embodiment, the work transfer device The apparatus 5 includes a work transfer apparatus main body 6 and a work supply table 9.

  And the said workpiece conveyance apparatus main body 6 comprises the slide part and the support part. That is, in the figure, reference numeral 7 denotes a slide portion. In the present embodiment, the slide portion 7 has a plate shape whose side surface is L-shaped or anti-L-shaped, and is slidable on the slide base 4. An engaging portion 701 engaged with the base 4 and a rear wall portion 702 connected to the rear end portion of the engaging portion 701 in an upward direction perpendicular to the engaging portion 701 are provided.

  A support portion 8 in the form of a block is disposed on the front side of the rear wall portion 702, and the work transfer device main body 6 is constituted by the slide portion 7 and the support portion 8, and this work transfer device. The main body 6 can be reciprocated along the slide base 4 by driving a moving means such as a direct shaft motor (not shown).

  Next, 9 in the figure is a work supply table. That is, in this embodiment, a work supply table 9 is supported on the support portion 8, and a work is attached to the work supply table 9.

  Here, the work supply table 9 will be described. In the present embodiment, the work supply table 9 includes a first stage and a second stage, and the first stage is supported by the support portion 8.

  That is, in the figure, reference numeral 10 denotes a first stage. In this embodiment, the first stage 10 is connected to the support portion 8 via a vertical rotation shaft 1001 that is rotatably connected to the support portion 8. It is connected to the front side.

  In the present embodiment, the first stage 10 includes a circular rotating body 1002 continuously provided on the vertical rotation shaft 1001 and a first stage main body 1003 continuously provided on the front side of the rotating body 1002. The first stage main body 1003 has a plate shape and is connected in a direction orthogonal to the surface of the rotating body 1002, that is, arranged in a direction parallel to the slide base 4.

  The vertical rotation shaft 1001 can be rotated by driving vertical rotation means such as a motor (not shown), whereby the first stage 10 rotates the vertical rotation shaft 1001. By moving, it can rotate in the vertical direction.

  Next, in the figure, 11 is the second stage. That is, in the present embodiment, a second stage 11 is connected to the upper side of the first stage 10, and a workpiece is attached on the second stage 11.

  Here, the second stage 11 will be described. In the present embodiment, a block-like base 1102 is disposed on the upper part of the first stage main body 1003, and the base 1102 has a horizontal rotation. The second stage main body 1103 is rotatably connected by the moving shaft 1101. Thus, the second stage 11 is rotatable in the horizontal direction with respect to the first stage 10 by rotating the horizontal rotation shaft 1101.

  As described above, in the present embodiment, the first stage 10 is rotatable in the vertical direction, and the second stage 11 is connected to the first stage 10 so as to be rotatable in the horizontal direction. Since the work is to be attached to the second stage 11, the side surface of the work can be directed upward by rotating the first stage 10 by a predetermined angle. By turning by a predetermined angle, the side surface directed upward can be any of the left side surface, the right side surface, the front side surface, and the rear side surface.

  In the figure, reference numeral 12 denotes an ink jet apparatus. That is, in the coating apparatus 1 of the present embodiment, the ink jet apparatus 12 is disposed in the course of the work transport apparatus 5, whereby the ink is landed on the work being transported for coating. Making it possible.

  Here, the ink jet device 12 will be described. In the drawing, the ink jet device 12 in this embodiment has support columns 13 disposed on both ends in the width direction of the slide base 4 with the slide base 4 interposed therebetween. doing.

  A printer head 14 is attached between the support columns 13 in a form supported by the support columns 13, and the work transfer device 5 is arranged to pass below the printer head 14.

  The printer head 14 is attached to the column 13 so as to be movable up and down, and the printer head 14 is moved up and down with respect to the column 13 by driving a motor (not shown).

  With this configuration, when the work W attached to the second stage 11 passes below the printer head 14 by the work transport device 5, the ink is dropped from the printer head 14 to land the ink on the work W. Thus, the workpiece W can be painted.

  The ink jet device 12 in the present embodiment is used to drop the ink and land on a work, like the ink jet device generally used for various printings. An ink supply unit (not shown) is connected to the head 14, whereby ink is supplied to the printer head 14 and dropped from the printer head 14.

  In this embodiment, the printer head 14 has a plurality of nozzle portions formed in an ink chamber filled with ink. By applying a voltage to the piezo element in contact with the ink chamber, the piezo element Although vibration is applied to the walls of the ink chamber, thereby causing the ink in the ink chamber to drop from the nozzle portion, this method is a well-known method and will not be described in detail.

  Next, in the figure, 16 is a UV curing device. That is, in the coating apparatus 1 of the present embodiment, the UV curing device 16 is disposed on the front side of the ink jet device 12 in the course of the track of the work transfer device 5.

  In this embodiment, the UV curing device 16 is mounted between the support columns 13 in such a manner that the UV curing device 16 is supported by the support columns 15 disposed on both ends in the width direction of the slide base 4 with the slide base 4 interposed therebetween. The workpiece transfer device 5 is arranged to pass below the UV curing device 16.

  And by this structure, when the workpiece | work W attached to the 2nd stage 11 passes the downward direction of the UV hardening apparatus 16 with the workpiece conveyance apparatus 5, it can enable it to irradiate UV toward the workpiece | work W. FIG.

  The UV curing device 16 in this embodiment includes a UV irradiation unit for irradiating UV as a light source, as in a general UV curing device, and irradiates the workpiece with UV from the UV irradiation unit. Thus, the ink that has landed on the work in the ink jet device 12 is cured to complete the coating.

  In the figure, reference numeral 17 denotes a blower. In this embodiment, the blower 17 is connected to the UV curing device 16 and air is fed into the coating space from the lower portion of the UV curing device 16, whereby the casing 3. The interior is always kept at positive pressure to prevent intrusion of dust from the outside.

  Next, the control system of the coating apparatus 1 of this embodiment will be described. FIG. 5 is a block diagram showing the configuration of the coating apparatus 1 of this embodiment. In FIG. In this embodiment, the control unit 21 uses a microcomputer.

  The control unit 21 includes a moving unit 25 such as an orthogonal shaft motor for reciprocating the workpiece transfer device 5 along the slide base 4, a motor for rotating the first stage 10 in the vertical direction, and the like. Vertical side rotation means 26, horizontal side rotation means 27 such as a motor for rotating the second stage 11 in the horizontal direction, the inkjet device 12, the blower 17, the image processing device 28, the UV curing device 16, and the power supply device 22 is connected, and an operation unit 23 and a display unit 24 for performing various settings and the like are connected, whereby the entire apparatus is operated under the control of the control unit 21.

  That is, in the coating apparatus 1 according to the present embodiment, the moving unit 25 such as a direct shaft motor is driven by the control of the control unit 21 so that the work transfer device 5 is reciprocated along the slide base 4 and the vertical side rotating unit. 26 is driven to rotate the first stage 10 by a predetermined angle in the vertical direction, and the horizontal rotation means 27 is driven to rotate the second stage 11 by a predetermined angle in the horizontal direction.

  In addition, ink is supplied from the ink supply unit to the printer head 14, ink is dropped from the printer head 14, and the printer head 14 is moved up and down with respect to the column 13.

  That is, next, an embodiment of a method for coating a casing for a portable terminal of the present invention using the coating apparatus 1 of the present embodiment configured as described above (hereinafter simply referred to as “coating method”) will be described. When a workpiece is to be coated by the coating method of this embodiment, the workpiece W is mounted on the second stage 11 and the workpiece transfer device 5 is reciprocated along the slide base 4 in that state. .

  Then, in the process of moving the workpiece conveying device 5 in one direction, when the workpiece W passes below the printer head 14, the ink is dropped from the printer head 14, whereby the ink is applied to the plane portion of the workpiece W. Is applied, and the flat portion of the workpiece W is painted.

  Next, the side surface portion of the workpiece W is painted while moving the workpiece transfer device 5 in the opposite direction. That is, with the work W coated with a flat surface being attached, the first stage 10 is rotated right or left by a predetermined angle in the vertical direction, so that the side surface of the work is directed upward, and prior to that, The second stage 11 is rotated in the horizontal direction by a predetermined angle, so that any one of the left side surface, the right side surface, the front side surface, and the rear side surface of the workpiece W is directed upward.

  At the same time, the printer head 14 is moved upward by a predetermined length, so that the work passing under the printer head 14 and the printer head 14 do not collide. That is, when the first stage 10 is rotated in the vertical direction, the upper end position of the work rises. At this time, in the ink jet system, the distance between the printer head and the work is 1 mm in order to make the ink land on the work reliably. Therefore, if the printer head 14 is located at the same position as when the plane portion of the workpiece is painted without moving the printer head 14 upward, the workpiece transfer device that rotates the first stage 10. When 5 is moved, the workpiece collides with the printer head 14. Therefore, in this embodiment, when the first stage 10 and the second stage 11 are rotated to coat the side surface of the workpiece, the printer head 14 is moved upward by a predetermined length, and the printer head 14 The work passing below and the printer head 14 are prevented from colliding.

  Then, the first stage 10 and the second stage 11 are rotated by a predetermined angle so that the side surface for coating is directed upward and the printer head 14 is lifted, and then the workpiece transfer device 5 is moved in the opposite direction. Then, the ink is dropped from the printer head 14 toward the work W passing under the printer head 14, thereby painting the side surface of the work W.

  Thereafter, the first stage 10 and the second stage 11 are rotated by a predetermined angle, the printer head 14 is lifted, the work transport device 5 is moved in one direction or the opposite direction, and the ink from the printer head is transferred. Repeat the fall and paint all sides of the workpiece W. That is, the second stage 11 is rotated in the horizontal direction by a predetermined angle, and the first stage 10 is rotated in the vertical direction by a predetermined angle. In this state, the work transport device is moved along the slide base 4 and, when the work W passes below the printer head 14, the operation of dropping ink from the printer head 14 toward the work W is repeated. Paint all sides of the workpiece W.

  Further, when ink is dropped from the inkjet device 12 onto the work W, image data is created in advance in the image processing unit 28 so that the side surface of the work can be reliably coated, and then the image processing unit 28 performs image processing in advance. The ink jet device 12 is controlled based on the obtained data, and the ink is dropped from the printer head 14 at the position of the work W according to the image.

  When the first stage 10 is rotated so that the side surface of the workpiece W faces upward, the side surface of the workpiece W does not need to be horizontal with respect to the printer head 14, and the edge portion of the workpiece W is located at the printer head 14. The edge portion of the workpiece W and its peripheral portion may be painted.

  In this embodiment, when ink is dropped onto the side surface portion of the work, the diameter of the ink dropped from the printer head 14 is made larger than the diameter of the ink dropped onto the plane portion of the work.

  That is, when ink is dropped toward the work while moving the work, the position of the ink landed on the work is shifted as the work moves. At this time, the side surface portion of the work is moved to the printer head 14. When the ink is landed while being inclined with respect to the workpiece, the position of the work is shifted as the work moves, compared to the case where the ink is landed with the plane portion of the work horizontal with the printer head 14. The distance between the inks landed on the ink becomes wide. For this reason, if no care is taken, the finish on the flat surface and the finish on the side surface will be different. Specifically, compared to the finish on the flat surface, the side surface will be painted. The finish will be rough.

  Therefore, in the painting method of the present embodiment, the diameter of the ink dropped on the side surface portion of the work is made larger than the diameter of the ink dropped on the flat surface portion of the work, and thereby, the finish of the painting of the flat portion is reduced. It prevents the finish of the side surface from becoming rough.

  Further, in the coating method of this embodiment, a UV curable paint that does not contain an organic solvent is used as the ink that lands on the workpiece, thereby making it possible to eliminate the step of heating and drying the paint after painting. .

  Next, UV irradiation is performed by the UV irradiation means on the work that has been dropped and landed from the printer head 14 on the flat surface portion and each side surface in this way, and thereby the ink landed on the work. This completes the painting of the workpiece.

  As described above, in the coating method of this embodiment, the work supply table is configured by the first stage that is rotatable in the vertical direction and the second stage that is rotatable in the horizontal direction, and the printer head of the inkjet apparatus is moved up and down. The first stage and the second stage can be moved freely to turn the desired side of the work upward, and the printer head can be raised so that the side of the work can be painted by the inkjet method. In addition, by solving the drawbacks of the ink jet method that can drop ink only in the vertical direction, it is possible to paint all surfaces of a three-dimensional workpiece such as a casing of a portable terminal by the ink jet method. .

  Therefore, according to the present embodiment, unlike the spray method in which painting is performed by spraying, the painting space can be reduced and the waste of ink can be eliminated. There is no need to collect the ink, and it is not necessary to provide equipment for collecting the ink, so that the cost can be reduced. It is possible to paint the surface of a simple three-dimensional workpiece.

  In addition, although the coating apparatus of the present embodiment is a coating apparatus for painting the casing of a tablet-type portable terminal, the object to be coated in the present invention is not limited to the casing of a tablet-type portable terminal. Any portable terminal may be used.

  In the portable terminal casing coating apparatus and the coating method using the same according to the present invention, it is possible to eliminate the waste of the paint and to reduce the air-conditioning energy for collecting the paint mist. Therefore, the present invention can be applied to the entire painting of a casing for a portable terminal.

DESCRIPTION OF SYMBOLS 1 Coating apparatus 2 Apparatus main body 3 Casing 4 Slide base 5 Work conveying apparatus 6 Work conveying apparatus main body 7 Slide part 8 Support part 9 Work supply table 10 1st stage 11 2nd stage 12 Inkjet apparatus 13 Strut 14 Printer head 15 Strut 16 UV Curing device 17 Blower 21 Control unit 22 Power supply device 23 Operation unit 24 Display unit 25 Direct shaft motor 26 Vertical rotation unit 27 Horizontal rotation unit 28 Image processing unit

Claims (4)

A portable terminal casing coating apparatus for coating a portable terminal casing by an inkjet method,
A slide base (4);
A work transfer device (5) mounted on the slide base (4) so as to be movable on the slide base (4);
An ink jet device (12) disposed in the middle of the track of the workpiece transfer device (5);
A UV curing device (16) disposed on the front side of the inkjet device (12) in the course of the track of the workpiece transfer device (5);
A control unit (21) for controlling the operation of the entire apparatus,
The workpiece transfer device (5)
A slide part (7) mounted on the slide base (4) and movable on the slide base (4) in the front-rear direction; a support part (8) connected to the slide part (7); A workpiece transfer device body (6) comprising:
A first stage (10) connected to the support portion (8) so as to be rotatable in the vertical direction, and connected to the upper surface of the first stage (10) so as to be rotatable in the horizontal direction, and a workpiece on the upper surface thereof. A work supply table (9) having a second stage (11) to which is attached,
The inkjet device (12)
A column (13) disposed at a position that does not hinder the movement of the workpiece transfer device (5);
A printer head (14) mounted on the column (13) so as to be movable up and down in an arrangement in which ink can land on a work attached to the second stage (11) in the work transfer device (5). And
The UV curing device (16) includes UV irradiation means for curing the ink landed on the workpiece in the inkjet device (12) by irradiating the workpiece with UV,
Ink jetting is performed by causing ink to land on the work from the printer head (14) while moving the work transport device (5) on the slide base (4) with the work attached to the second stage (11). The work can be painted by a method, and the first stage (10) and the second stage (11) are rotated by a predetermined angle, whereby the work is inclined by a predetermined angle with respect to the printer head (14). A mobile terminal casing coating apparatus, wherein a side surface portion of a workpiece can be painted by raising the printer head (14) by a predetermined length. A method of coating a mobile terminal casing using the mobile terminal casing coating apparatus according to claim 1,
While the workpiece is attached to the second stage (11), the workpiece transfer device (5) is moved back and forth on the slide base (4).
The ink jet device (12) applies the ink to the work plane to coat the work plane,
The first stage (10) and the second stage (11) are rotated by a predetermined angle to change the orientation of the workpiece with respect to the printer head (14) and the printer head (14) is raised by a predetermined length Then, the side part of the work is painted by landing ink on the work,
Thereafter, the ink landed on the workpiece by the ink jet apparatus is cured by UV irradiation by the UV irradiation means, and the method for coating the casing for the portable terminal is characterized in that:   The method of coating a casing for a portable terminal according to claim 2, wherein the diameter of the ink dropped from the printer head (14) is increased when the side surface portion of the workpiece is painted.   The method for coating a casing for a portable terminal according to claim 2 or 3, wherein ink that does not contain an organic solvent is dropped from a printer head (14) of the inkjet device (12).

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