KR101287784B1

KR101287784B1 - Ink jet application apparatus and method

Info

Publication number: KR101287784B1
Application number: KR1020100105651A
Authority: KR
Inventors: 요시쯔구 미야모또; 도시하루 기시무라; 히또시 마나베; 가쯔요시 와따나베; 히데오 나까무라
Original assignee: 가부시키가이샤 히타치플랜트테크놀로지
Priority date: 2009-10-29
Filing date: 2010-10-28
Publication date: 2013-07-19
Also published as: TW201138985A; KR20110047148A; JP5548426B2; CN102049901B; JP2011092855A; TWI485008B; CN102049901A

Abstract

The subject of this invention is making it possible to apply | coat an application | coating material to this film in the state which the curl correction of the both side edge parts of a film is made, and to improve the application | coating quality of a film.
The film 1 unwound from the unwinding side film roll 2 is wound up by the winding-up film roll 3, and is conveyed so that the application | coating object area may be located on the adsorption table 10 by the application part 17. When the area | region to apply | coat is located on the adsorption table 10, the film 1 will stop and be loaded on the adsorption table 10, and tension will be added in the longitudinal direction, and looseness etc. will be removed. However, by this, curl is generated in both side portions of the area to be coated. Therefore, while the application target area is loaded on the suction table 10, the curl straightening bars 13 and 14 provided on both sides of the suction table 10 move to the curl portion of the application target area, and this portion of the suction table is moved. Curl correction is performed by pressing on the suction surface.

Description

Inkjet coating apparatus and method {INK JET APPLICATION APPARATUS AND METHOD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll to roll inkjet coating apparatus for use in the manufacture of a flexible material by inkjet coating, and more particularly, to a solar cell provided with a non-silicon based semiconductor material (for example, CIGS thin film). The inkjet coating apparatus and method used for formation of an electrode, an insulating film, etc. in a film are related.

Background Art Conventionally, as an example of a printing apparatus, an introduction portion for introducing a print medium while removing curls and aligning in the width direction, and is disposed adjacent to the introduction portion and disposed opposite to the print medium to convey the print medium by a belt. A print medium which is arranged opposite to a conveying unit, a print unit having a plurality of rows of line heads corresponding to the number of types of colors, and downstream of the conveying direction of the print medium in the print unit, The printing apparatus provided with the drying part which dries is known (for example, refer patent document 1).

In such a printing apparatus, curling is removed with a plurality of rollers in a sheet-like print medium (for example, a fabric stored in a roll shape or a box), and the centering in the conveying direction center and the grain correction of the cloth, Curling of both ends (both edges of the fabric) is performed.

In this case, tension is applied to the fabric by a plurality of rollers, and the curls of both edges of the fabric are also corrected. However, the direction of tension is large in the longitudinal direction of the fabric, and both sides of the fabric are perpendicular to the longitudinal direction of the fabric. The tension on the curl is slightly smaller.

In addition, this curl correction is performed in the carry-in part which is located in the front position rather than the place to print on this fabric, and in both the section to the print part after passing through this carry-in part, and in the print part, The tension for the correction of the curls will be close to that once opened.

[Patent Document 1] Japanese Patent Application Laid-open No. Hei 9-239968

In the film unwound and conveyed by the roll-to-roll system, there exists a site | part in which the semiconductor material is vapor-deposited on the surface, and the site | part in which it is not deposited, for this reason, the both side edge part of the width direction of a film is rounded (curled). . When the film unwound from the roll is adsorbed and held on the adsorption table for application of the amount of coating material, if the curls are present at both side edges in this manner, the film is less likely to be adsorbed flat on the adsorption table, resulting in curling or loosening. There is a problem that occurs. In this way, when curling or loosening occurs, the nozzle tip surface such as the inkjet for coating may contact the film, and the nozzle surface may be damaged.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem and to apply a coating material to the film in a state in which curls on both side portions of the film are fixed, and to improve the coating quality to the film, and To provide a way.

In order to achieve the above object, the present invention is a liquid coating material on the upstream guide roll for unwinding and conveying a roll-shaped film, an adsorption table for adsorbing and holding the unwinded film, and a film adsorbed and held in the adsorption table. An inkjet coating device comprising a coating head for applying a coating material and a downstream guide roll for conveying a film coated with a coating material and winding in a roll shape, and adsorbing both side edge portions in an application target area mounted on an adsorption surface of an absorption table of the film. A curl correction bar is provided which is pressed against the suction surface of the table and widens to the side of the suction table, and the curl portions generated at both side portions in the area to be coated with the film are corrected by the curl correction bars, so that the entire application area is flat. It is characterized by maintaining the adsorption uniformly on the adsorption surface of the adsorption table.

In addition, the adsorption surface of the adsorption table is divided into the central region and the peripheral region on both sides of the central region with respect to the direction perpendicular to the conveying direction of the film, and the operation of the vacuum suction hole in the central region and the vacuum suction hole in the peripheral region. And a control unit for controlling the operation of the control unit. The control unit controls the vacuum adsorption holes in the central region along with the loading of the application target area of the film onto the adsorption table to face the central region of the application target area. The vacuum suction holes in the peripheral area together with the curl correction of both side edges in the application target area of the film loaded on the adsorption table by the curl correction bar and operating the vacuum suction holes in the application target area to face the peripheral area of the application target area. It is characterized by holding the vacuum suction area.

Moreover, it is characterized by including the means for detecting the floating from the adsorption surface of the adsorption table of the film vacuum-adsorbed to the adsorption table.

In addition, a means for adjusting the air pressure of the lifting cylinder for driving the lifting operation of the curl correction bar for adjusting the force of pushing up and extending both side portions of the area to be coated with the film to both side sides of the suction table by the curl correction bar. It is characterized by one.

In order to achieve the said objective, this invention unwinds and conveys the film wound up in roll shape with the guide roll of an upstream, and the area | region to apply the uncoiled film is mounted in the adsorption surface of the adsorption table, Liquid coating material is apply | coated to the application | coating target area of a film, The film to which the coating material was apply | coated is an inkjet coating method conveyed by the downstream guide roll, and wound up in roll shape, The application target of the film mounted on the adsorption surface of the adsorption table Both sides of the area are pressed against the adsorption surface by a curl straightening bar to be widened to the side of the adsorption table to be adsorbed and held on the adsorption surface.

According to the present invention, when fixing and positioning the film to be applied to the adsorption table, both sides of the film are pressed to the adsorption table by the curl correction bar and adsorbed, so that curls occurring on both sides of the film are corrected. The film is fixed to the adsorption table flatly, and in this state, the coating material is applied to the film, so that the coating quality of the film is improved.

1 is a perspective view showing a schematic configuration of a first embodiment of an inkjet coating apparatus and method according to the present invention.
It is a figure which shows the curl state of the side edge part of the film which arises in the application | coating part in FIG.
FIG. 3 is a schematic perspective view showing one specific example of a curl correction mechanism of a film in the first embodiment shown in FIG. 1. FIG.
FIG. 4 is a flowchart showing one specific example of curl correcting operation of a film by the curl correcting bar shown in FIG. 3. FIG.
FIG. 5 is a diagram showing a flow of curl correction operation shown in FIG. 4. FIG.
6 is a perspective view showing one specific example of an adsorption table in a second embodiment of the inkjet coating apparatus and method according to the present invention.
7 is a flowchart showing one specific example of curl correcting operation of a film according to the second embodiment provided with the adsorption table shown in FIG. 6.
8 is a schematic perspective view showing a main part of a third embodiment of the inkjet coating apparatus and method according to the present invention.
Fig. 9 is a schematic perspective view showing one specific example of the curl straightening device in the fourth embodiment of the inkjet coating device and method according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Moreover, embodiment described below is an example of an electrode or an insulating film by apply | coating an electrode material or an insulating material by the inkjet coating head on the solar cell film in which the non-silicon type semiconductor material (for example, CIGS thin film) was given. And film formation. The CIGS thin film is a thin film of a semiconductor material composed of Cu (copper), In (indium), Ga (gallium), Se (selenium), and "CIGS" is an array of initials of these materials. The film thickness can be thinned to about 10 micrometers-100 micrometers.

1 is a perspective view showing a schematic configuration of a first embodiment of an inkjet coating apparatus and method according to the present invention. Reference numeral 1 denotes a solar cell film (hereinafter simply referred to as a film), 2 a unwinding side film roll, 3 a winding side film roll, 4 and 5 guide rolls, 6 and 7 lifting guide rolls, and 8 and 9 suction bars. , 10 is a suction table, 11 is a winding-up shaft motor, 12 is a winding-side shaft motor, 13 and 14 are curl correction bars, 15 is an application head, 16 is an unwinding part, 17 is an applying part, and 18 is a winding part.

In FIG. 1, the space is divided into the unwinding part 16, the application | coating part 17, and the winding-up part 19 in the X-axis direction, and the unwinding part 16 is rotationally driven by the unwinding side shaft motor 11 in FIG. The unwinding film roll 2, the upstream guide roll 4, the lifting guide roll 6, and the suction bar 8, which are to be arranged, are arranged in the X-axis direction in order, and the winding portion 18 is provided on the downstream side. The adsorption bar 9, the lifting guide roll 7, the guide roll 5, and the winding side film roll 3 are arranged in order in the X-axis direction. Moreover, the adsorption table 10, the application head 15, and the curl correction bars 13 and 14 are provided in the application part 17. As shown in FIG.

In the unwinding part 16, the unwinding side film roll 2 is wound in a roll shape with a film 1 to be coated with an electrode material or an insulating material in the application part 17. Moreover, this film 1 is unwound from this unwinding side film roll 2, and is wound up by the winding-up part 18 by the winding-up film roll 3 via the application part 17. FIG. In this state, the longitudinal direction of the film 1 is the X-axis direction, the width direction thereof is the Y-axis direction, and the direction perpendicular to the plane consisting of the X-axis and the Y-axis is the Z-axis direction.

In the application part 17, the film 1 is vacuum-adsorbed by the adsorption table 10, the position is fixed, and the inkjet type application head which is supported by the gantry (moon-shaped frame) structure which is not shown in figure is arrange | positioned, By this, a liquid electrode material, an insulating material, or the like (hereinafter referred to as "coating material") is applied onto the CIGS thin film of the film 1 to form an electrode or an insulating film. A groove-shaped recess is formed in this CIGS thin film, and a coating material is apply | coated to this recess and an electrode and an insulating film are formed.

Moreover, the application | coating head 15 is movable in the XY-axis plane, and the movement of the Z-axis direction (height direction), respectively, and the nozzle hole toward the film 1 in the lower surface of each application head 15 is carried out. About 250 of these are formed, the droplet of a coating material is pushed out by the piezo drive, and it injects on the film 1. In this way, the nozzle of the coating head 15 moves in the XY axis plane and injects the coating material individually, thereby making it possible to precisely apply the coating material in all patterns to the coating surface of the film 1.

In this way, when application | coating of the coating material in the predetermined | prescribed application area of the film 1 in the application part 17 is complete | finished, the film 1 is unwound from the unwinding side film roll 2, and the winding side film roll The film 1 is wound up by the film 1 so that the film 1 is unwinded so that the next application target area of the film 1 can be disposed at a position where the coating material can be applied at the application part 17. Although conveyed from the film roll 2 side to the winding-up film roll 3 side, in this case, it unwound from the unwinding side film roll 2 which is rotationally driven by the unwinding side shaft motor 11 in the unwinding part 16. The film 1 is supported by the guide roller 4 and the lifting guide roller 6, but the lifting guide roller 6 is raised to a position higher than the suction surface of the suction table 10 at this time, and the winding portion In (18), the film (1) is supported by the lifting guide roller (7) and the guide roller (5) to wind up the film It is wound by 3. The lifting guide roller 7 is raised to a position higher than the suction surface of the suction table 10. Thereby, the film 1 moves to an X-axis direction, without contacting the suction bars 8 and 9 and the suction table 10. FIG.

In this way, when the film 1 is conveyed from the unwinding portion 16 side to the winding-up portion 18 side, the film 1 is lifted by the lifting guide rollers 6, 7, and the film 1 Since it conveys without contacting this suction table 7, it can prevent that a frictional flaw arises on the back surface of the film 1.

In this way, the film 1 is conveyed in the state which does not contact the adsorption bars 8 and 9 and the adsorption table 10 by the lifting guide rollers 6 and 7, and is the next application | coating object in the film 1 When the area reaches the application part 17, the conveyance of the film 1 is completed. Positioning of the X-axis direction in the application | coating part 17 of this application | coating object area is made (this positioning first monitors the winding-up amount of the winding-up film roll 3, and adjusts the position substantially. Subsequently, although not shown, a mark is formed for each application target area of the film 1, and this is photographed with a camera (not shown), and the unwinding side shaft motor 11 is positioned so that the mark is located at a predetermined position of the photographing area. ) And the winding-side shaft motor 12 to precisely adjust the position of the film 1 in the X-axis direction. When the position adjustment is completed, the brake is applied to the winding-side shaft motor 12 to apply the film (1). ), The winding portion 18 side is fixed. And with this, the unwinding side shaft motor 11 is made into the state which torque was applied to the reverse rotation direction with the unwinding rotation direction of the film 1.

Thereby, even if conveyance of the film 1 is complete | finished, this film 1 will be kept in the state which the tension was applied to the longitudinal direction (that is, the X-axis direction to which it is conveyed), and the looseness to the film 1 will be Does not occur.

In such a state, in the application part 17, the adsorption bar 8, 9 raises together in the state which the lifting guide rolls 6 and 7 rose as mentioned above, and contacts the back surface of the film 1, and this film ( 1) is adsorbed and maintained. Thereafter, the elevating guide rolls 6 and 7 descend below the adsorption surface of the adsorption table 10, and then the adsorption bars 8 and 9 descend while adsorbing and holding the film 1 to form a film ( The back surface of 1) is brought into contact with the adsorption surface of the adsorption table 10. Thereby, the film 1 is adsorbed-held by the suction table 10, and the coating material is apply | coated to the new application | coating object area by the application | coating head 15. FIG.

By the way, even when the film 1 is in contact with the adsorption table 10, in the state where the film 1 is tensioned in the longitudinal direction, the portions before and after the adsorption table 10 are the adsorption bars 8 and 9. It is held by. Here, the longitudinal direction of the side surface of the guide roll 4 and the lifting guide roll 6 in the unwinding part 16, and the adsorption surface of the adsorption bar 8 are Y-axis direction, ie, the width direction of the film 1 Parallel to, the entire width of the film 1 is pressed against these guide rolls 4, the lifting guide rolls 6, and the suction bar 8, and the entire width of the film 1 is similarly applied to the winding-up portion 18 side. Is pressed against the adsorption bar 9, the elevating guide roll 7 and the guide roll 5 so that the entire width of the film 1 is horizontal, that is, parallel to the Y axis, Since the tension in the longitudinal direction is applied and held by the adsorption bars 8 and 9, an angle difference between the tension direction and the curl direction occurs between the adsorption bars 8 and 9 with a long distance, and thus the film 1 The left and right both side portions of the curled portion 19 is inclined downward as shown in FIG.

When the film 1 is brought into contact with the adsorption table 10 by lowering the adsorption bars 8 and 9 which hold and hold the film 1 in the state where the tension is applied, the film 1 is curled at both sides thereof. ) Is brought into contact with the adsorption table 10, and even if the adsorption table 10 adsorbs the film 1 in such a state, a good adsorption state cannot be obtained.

The curl straightening bars 13 and 14 provided on both sides of the Y-axis direction of the adsorption table 10 by the application part 17 are installed in order to correct the curl 19 which arises in the both side parts of the film 1. It is.

FIG. 3 is a perspective view schematically showing a specific example of the curl straightening bars 13 and 14 and the driving mechanism thereof in the applicator 17 in FIG. 1, and reference numeral 10a denotes one side of the suction table 10. The side portions, 20a and 20b are lifting cylinders, 21a and 21b are cylinder shafts, 22a and 22b are width aligned cylinders, 23a and 23b are cylinder shafts, and portions corresponding to those in FIG. .

In FIG. 3, the curl straightening bar 14 is arrange | positioned at the side part 10a side of the suction table 10 so that the longitudinal direction is parallel to an X-axis direction. The lifting cylinder 20a is provided in one end side of this curl correction bar 14, and the lifting cylinder 20b is provided in the other end side, respectively, and it moves up and down by the drive of these lifting cylinders 20a, 20b. Both ends of the curl straightening bar 14 are supported by the cylinder shafts 21a and 21b. Pneumatic pressure is supplied to these lifting cylinders 20a and 20b, and the air pressure in the lifting cylinders 20a and 20b is added and reduced, thereby causing the cylinder shafts 21a and 21b to expand and contract (move up and down) at the same time so that the curl correction bar 14 Move up and down while maintaining parallel along the X axis.

Moreover, the width alignment cylinder 22a which the cylinder shaft 23a is connected to the lifting cylinder 20a, and the width alignment cylinder 22b which the cylinder shaft 23b is connected to the lifting cylinder 20b are provided, and these width alignment are carried out. Although not shown, the cylinders 22a and 22b are provided with an air pressure regulator for adjusting and adjusting the air pressure there. By regulating the air pressure in the width alignment cylinders 22a and 22b, the cylinder shafts 23a and 23b are stretched and contracted at the same time, and the lifting cylinders 20a and 20b move forward and backward in the Y-axis direction.

FIG. 4 is a flowchart showing one specific example of the curling operation of the film 1 by the curl straightening bar 14 shown in FIG. 3. Hereinafter, this specific example is demonstrated with reference to FIG.

In FIG. 4, when not in use, the curl straightening bar 14 is located at a position substantially opposite to one side portion 10a of the suction table 10 as shown, and this position is referred to as a retracted position. The state of being in this position is called the evacuation state.

When the next application target area of the film 1 reaches the application unit 17, the adsorption holes formed in the adsorption surface of the suction table 10 are set in a state capable of vacuum adsorption, and in this application target area of the film 1 When the operation for the application of the coating material is started (step S100), and the film 1 is vacuum-adsorbed to the adsorption table 10 in a state where tension is applied thereto as described above (step S110), the curl straightening bar 14 In order to calibrate the curl 19 of the side part of the film 1 by operating the elevating cylinders 20a and 20b and the width alignment cylinders 22a and 22b, the curl straightening bar 14 is moved to the solid arrow A. FIG. As indicated by, first, the film is raised from the retracted state to the first fixed position above the film 1 on the adsorption table 10 in the Z-axis direction, and then in the direction of the film 1 (along the Y axis). 2nd position beyond the curl part 19 (FIG. 2) by the side part 10a side of the suction table 10 in 1). To move horizontally and that the second position is reached (step S120), thereby lowered to a third position to urge the back film (1) to the suction table 10 (step S130). And in the state which pressed the film 1 to the adsorption table 10, the curl correction bar 14 is returned to the vicinity of the side part 10a of the adsorption table 10 in the direction of the retracted position, and in the film 1 The entire curled portion 19 is spread outward to the fourth fixed position pressed against the suction surface of the suction table 10 (step S140). Thereby, the part of the side part 10a side of the adsorption table 10 in the film 1 also becomes flat overall, pressurizes to this adsorption table 10, and is made to vacuum-sorption.

In this way, when the curl is finished, the curl straightening bar 14 is raised from the fourth correct position to the fifth correct position, as indicated by the broken arrow B, and is horizontal from the fifth correct position to the retracted position side. When it reaches to the 6th fixed position just above the retracted position, it will fall to there from the retracted position and will be made to retract (step S150). Thereby, the curl correction operation in this application | coated object area is complete | finished (step S160).

In addition, although description is abbreviate | omitted here, it is the same also about the curl correction bar 13, The drive mechanism is shown by adding the dash (') to the part corresponding to the drive mechanism of the curl correction bar 14 with the same code | symbol. have. However, since the curl correction bar 13 in the filter 1 corrects the curl of the side of the side opposite to the side where the curl correction bar 14 in the filter 1 corrects the curl, the Y axis of the curl correction bar 13 is adjusted. The moving direction in the reverse direction is reversed as indicated by arrows A 'and B'.

5 is a diagram illustrating a flow of curl correction operation.

Fig. 5A shows the state of the curl straightening bars 13 and 14 by step S120 in Fig. 4, in which the curl straightening bars 13 and 14 are solid lines in Fig. 3 from the retracted position. Move along arrows A 'and A to the second home position.

FIG. 5B shows the state of the curl correction bars 13 and 14 by step S130 of FIG. 4, in which the curl correction bars 13 and 14 are moved from the second position in FIG. Along the solid arrows A 'and A, and the film 1 is in the third normal position to press the film 1 against the suction table 10.

FIG. 5C shows the state of the curl correction bars 13 and 14 by the step S140 of FIG. 4, in which the curl correction bars 13 and 14 are moved from the third position in FIG. 3. It moves in the direction of a retracted position along the solid line arrow A 'of A, and the curl of the film 1 is correct | amended and it is in a 4th correct position.

FIG. 5D shows a first state of the curl straightening bars 13 and 14 in step S150 of FIG. 4, and in this state, these curl straightening bars 13 and 14 are moved from the fourth position. It rises along the broken line arrow B ', B in FIG. 3, and is in 5th fixed position spaced apart from the film 1. As shown in FIG. At this time, the curl of the film 1 is correct | amended, and this whole surface is contacting the adsorption table 10 uniformly, and the vacuum suction is carried out stably.

FIG. 5E shows the second state of the curl straightening bars 13 and 14 in step S150 of FIG. 4 following the state shown in FIG. 5D. In this state, these curls are shown. The calibration bars 13 and 14 are horizontally moved from the fifth correct position along the dashed arrows B 'and B in FIG. 3 to the retracted position side, and are at the sixth correct position just above the retracted position.

FIG. 5F shows a third state of the curl straightening bars 13 and 14 in step S150 of FIG. 4 following the state shown in FIG. 5E, and in this state, these curls are shown. The calibration bars 13 and 14 descend from the sixth correct position along the dashed arrows B 'and B in Fig. 3 to the retracted position and are in the retracted position.

In this way, in the state where the film 1 is adsorb | sucked to the adsorption table 10, the application | coating head 15 apply | coats a coating material in the application | coating target area of the film 1. When the application | coating operation | movement complete | finishes, the lifting guide rollers 6 and 7 raise, and the film 1 is lifted from the suction table 10. As shown in FIG. And the unwinding side film roll 2 and the winding-side film roll 3 are driven, and conveyance of the film 1 is resumed so that the next application | coating object area | region of the film 1 may be located in the application | coating part 17. FIG.

In the above operation, the curl straightening bars 13 and 14 in the state shown in FIGS. 5B and 5C press the film 1 against the force or the film 1 that presses the film 1 onto the adsorption table 10. The spreading force can be controlled by controlling the set pressures of the lifting cylinders 20a and 20b for moving the curl straightening bars 13 and 14. In addition, the speed of the curl correction bar 13, 14 which widens the film from FIG. 5 (b) to FIG. 5 (c) is used for air flow control means, such as a speed control valve of the width alignment cylinders 22a, 22b. Can be set at desired speed.

As mentioned above, in this 1st embodiment, in order to remove the looseness of this film 1 at the time of apply | coating a coating material on the film 1 in the application part 17, and to remove this looseness, The curl in the side part of this film 1 which arises by adding tension to the film 1 can also be removed, and the film 1 is adsorbed to the adsorption table 10 stably and with high precision, and the film 1 It becomes possible to apply | coat a coating material with high precision.

6 is a perspective view showing an adsorption table in a second embodiment of the inkjet coating apparatus and method according to the present invention. 24 is an adsorption surface, 25 is a center area adsorption part, 26a, 26b is a peripheral area adsorption part, 27 is an adsorption hole, 28 is a center area adsorption hole, 29 is a peripheral area adsorption hole, and it is the same in the part corresponding to FIG. The redundant description is omitted by attaching a sign.

Similarly to the first embodiment described above, the second embodiment also has the configuration shown in FIG. 1, but the adsorption method (that is, the adsorption control) in the adsorption table 10 is different.

That is, in FIG. 6, although the adsorption | suction hole 27 for vacuum-suctioning the film 1 is formed uniformly in the adsorption surface 24 of the adsorption table 10, in this 2nd embodiment, adsorption | suction is carried out. The surface 24 is formed on both sides of the center region adsorption portion 25 and the center region adsorption portion 25 of the center in the width direction (direction perpendicular to the conveyance direction of the film 1 (Y-axis direction)). It is divided into three areas of the peripheral area adsorption part 26a, 26b, and under control of the control part which is not shown in figure, the adsorption hole 27 in the center area adsorption part 25, ie, the center area adsorption hole 28, and The control of the adsorption hole 27 in the peripheral area | region adsorption | suction part 26a, 26b, ie, the peripheral area | region adsorption hole 29, is made to be shifted independently independently in time.

Also in this 2nd Embodiment, although operation | movement of the curl straightening bar 13 and 14 is the same as operation | movement of 1st Embodiment shown in FIG. 5, in the control part, the area | region to apply | coat the film 1 is an application | coating part 17 (FIG. 1), the center region adsorption hole 28 of the center region adsorption part 25 in the adsorption surface 24 of the adsorption table 10 is started, and at least FIG. In the state shown in (a), the center area | region adsorption hole 28 becomes an operation state. On the other hand, in the peripheral area | region adsorption | suction part 26a, 26b, the curl correction bar 13, 14 turns into the state shown in FIG. 5D from the state shown in FIG. 5B, and the film 1 The curl part 19 of () is correct | amended, and a control part detects the completion | finish of this curl correction operation | movement, and makes it control to start the adsorption operation | movement of the peripheral area | region adsorption | suction hole 29. In addition, when the application | coating operation | movement of the coating material in the area | region to apply the film 1 is complete | finished, a control part detects this and complete | finishes the adsorption operation | movement of the center area | region adsorption hole 28 and the peripheral area | region adsorption hole 29. FIG.

FIG. 7: is a flowchart which shows the adsorption | suction operation of the film 1 of the adsorption table 10 in this 2nd Embodiment. This is demonstrated using FIG. 1, FIG. 5, and FIG.

In FIG. 1, when the film 1 is unwound from the unwinding film roll 2 and conveyed, all the adsorption holes 27 are in an inoperative state in the adsorption table 10 of the structure shown in FIG. When the next application | coating object area | region of the film 1 reaches the application | coating part 17, in FIG. 6, the center area | region adsorption hole 28 of the center area | region adsorption part 25 in this adsorption table 10 will operate | move the operation | movement. In this state, as described above, the adsorption bars 8 and 9 drop, so that the film 1 (FIG. 1) contacts the adsorption surface 24 of the adsorption table 10. At this time, since the adsorption operation | movement is performed by the center area | region adsorption hole 28 of the center area | region adsorption part 25 in the adsorption table 10, the part which contact | connects this center area | region adsorption part 25 of the film 1 is centered. Vacuum suction is maintained by the area suction hole 28. On the other hand, since the peripheral area | region adsorption hole 29 of the peripheral area | region adsorption part 26a, 26b in the adsorption table 10 does not operate, the part which opposes this peripheral area | region adsorption part 26 of the film 1 is opposed. Is not held by adsorption (step S210 in FIG. 7).

And similarly to the first embodiment, the curl straightening bars 13 and 14 are operated to be in the state of the second correct position shown in Fig. 5A (step S220 in Fig. 7). It descends to the 3rd correct position shown in (b) of 5, and presses the film 1 to the adsorption table 10 (step S230 of FIG. 7), and continues from the 3rd correct position to a 4th fixed position. And the side edge part of the film 1 shown to Fig.5 (c) is pushed to the side edge part side of an adsorption | suction table, and the curl correction is performed in this side edge part (step S240 of FIG. 7).

Thus, the area | region adsorption part of the periphery of the adsorption surface 24 of the adsorption table 10 in the state in which the curl correction bars 13 and 14 are in the 4th correct position, and the curl of the side part of the film 1 is being corrected. Peripheral area | region adsorption | suction part 29 of 26a, 26b starts operation | movement, and the side edge part of the film 1 whose curl was correct | amended by these peripheral area | suction area | region adsorption | suction hole 29 is the peripheral area | region adsorption part of the adsorption table 10 Vacuum suction is maintained at 26a and 26b (step S245 in FIG. 7). In this way, the whole application | coating area of the film 1 becomes flat, and is vacuum-sucked and hold | maintained by the suction table 10. FIG.

Thereafter, the curl straightening bars 13 and 14 are subjected to the state shown in FIGS. 5D and 5E from the state shown in FIG. 5C as in the first embodiment. It is in the retracted position shown in (f) of 5 (step S250 of FIG. 7), and the curl correction operation | movement of the film 1 is complete | finished (step S260 of FIG. 7).

Thus, in the state where the film 1 is adsorb | sucked to the adsorption table 10, the application | coating head 15 (FIG. 1) apply | coats a coating material in the application | coating target area of the film 1, and an application | coating operation | movement is performed When it finishes, the lifting guide rollers 6 and 7 raise, the film 1 is lifted from the suction table 10, and the unwinding side film roll 2 and the winding-up film roll 3 are driven, and the film ( The conveyance of the film 1 is resumed so that the next application | coating object area of 1) may be located in the application | coating part 17. FIG.

Thus, also in this 2nd Embodiment, the film 1 can be curl-corrected and hold | maintained in vacuum in the application part 17, and the same effect as the previous 1st Embodiment is acquired.

Fig. 8 is a schematic perspective view showing main parts of a third embodiment of the inkjet coating apparatus and method according to the present invention. Reference numeral 30 is a film presence detection sensor of the film injury detection device, 31 is a detection hole of the film injury detection device, 32a is a beam light emitting device of the film injury detection device, 32b is a detection sensor of the film injury detection device, 33 is an optical beam, Parts corresponding to FIG. 1 are given the same reference numerals and redundant descriptions are omitted.

This third embodiment includes the apparatus for detecting whether the curl correcting operation is completed in the first and second embodiments described above. Hereinafter, such a device is called a film floating detection device.

In FIG. 8, the detection hole 31 which penetrates from the upper surface (adsorption surface) to the lower surface (back surface) is formed in the side edge part of the suction table 10, and the suction table 10 opposes this detection hole 31. In FIG. The optical reflection type film | membrane detection sensor 30 is provided in the back surface side of (), and the film float detection device is formed by these detection holes 31 and the film presence sensor 30. As shown in FIG.

This detection hole 31 is provided in the position of the curl part 19 (FIG. 2) which generate | occur | produced in this film 1, when the film 1 is mounted in the adsorption table 10, and there exists a film The detection sensor 30 irradiates light through this detection hole 31, receives the reflected light from the back surface of the film 1 mounted on the adsorption table 10 through the detection hole 31, and the half thereof. Although the amount of received light of the reflected light is detected according to the distance to the slope, as shown in FIG. 5 (a), the curl portion 19 is provided at the side portion of the film 1, and the side portion of the film 1 is an adsorption table. When floating from (10) and as shown in (c) of FIG. 5, when curling is performed and the side portions of the film 1 are also flat and are in contact with the suction surface of the suction table 10, The distance from the film presence detection sensor 30 to the back surface of the film 1 which irradiation light reflects differs.

From this, the film presence detection sensor 30 irradiates light through the detection hole 31, when the operation | movement of the curl correction of said film 1 is complete | finished, and the film 1 mounted on the adsorption table 10 is carried out. The light reflected from the back surface of the back side) is received through the detection hole 31, and a processing unit (not shown) measures the distance to the back surface of the film 1 based on the light reception result, and processes this measurement result to process the film ( It is determined whether the back surface of 1) is lifted up from the adsorption table 10 or is in contact with the adsorption table 10 in a flat state, and a determination result is obtained that the back surface of the film 1 is lifted up from the adsorption table 10. When the curling of the film 1 is not performed, the operator of the apparatus is notified of this, and the apparatus is stopped to stop the coating operation.

In this third embodiment, the beam light emitting device 32a is further provided on the outer side of one side edge portion of the suction table 10, and the detection sensor 32b is provided on the outer side of the other side edge portion, respectively. The light beam 33 from the beam light emitting device 32a is received by the detection sensor 32b. These beam light emitting devices 32a and the detection sensors 32b constitute a film flotation detection device. In this case, the beam light emitting devices 32a and the detection sensors 32b are arranged from the beam light emitting devices 32a as positions. When the light beam 33 is vacuum-adsorbed to the adsorption table 10 in the state where the film 1 is generally flat so that the light beam 33 may cross this adsorption table 10 above the adsorption table 10, the beam light-emitting device The light beam 33 from 32a can be detected by the detection sensor 32b, and the curled part 19 (FIG. 2) generate | occur | produces, and the film 1 has the adsorption surface 24 of the adsorption table (FIG. 6, the light beam 33 from the beam light emitting device 32a is blocked by the film 1 so that it cannot be received by the detection sensor 32b.

Thereby, in the processing part which is not shown in figure, when the light reception result of the light beam 33 is obtained by the detection sensor 32b after completion | finish of the said curl correction operation | movement of the film 1, the film 1 whole is in a flat state. It is determined that vacuum suction is held on the suction table 10. And although the application | coating operation | movement of the coating material of this film 1 is started, when the light reception result of the light beam 33 is not obtained by the detection sensor 32b, it judges that the curl correction of the film 1 was not possible. . The operator of this apparatus is notified of the effect, and the operation of the apparatus is stopped to stop the coating operation.

As mentioned above, in this 3rd Embodiment, after performing the curl correction of the film 1, since it can confirm whether curl correction was performed reliably by the film injury detection apparatus, the state of not performing curl correction sufficiently It is possible to prevent the coating material from being applied.

In addition, in the above description, the film injury detection apparatus which consists of the film presence detection sensor 30 and the detection hole 31, and the film injury detection apparatus which consists of the beam light emitting device 32a and the detection sensor 32b is used. However, you may make it use only one of these film injury detection apparatuses. In addition, you may make it use more than one film float detection apparatus. These film flotation detection apparatuses are used according to the curl state of the film 1.

In all of these, reliability can be improved significantly by carrying out the procedure by which the curl of the film 1 is corrected and it becomes a flat state, and can move to the next application | coating process only. If the curl calibration cannot be completed and the manufacturing process is paused, an alarm or the like is notified to the operator. In this case, waste occurs in the production time, but it is possible to prevent problems such as starting the coating operation in the state where the film 1 floats or lowering the yield of the manufactured product in the state of curling.

9 is a schematic perspective view showing one specific example of the curl straightening device in the fourth embodiment of the inkjet coating device and method according to the present invention. Reference numerals 34 and 35 denote pneumatic pressure regulators, and portions corresponding to those in FIG. 3 are given the same reference numerals, and overlapping descriptions are omitted.

In FIG. 9, air pressure is supplied to the lifting cylinders 20a and 20b through the air pressure regulator 34. As shown in FIG. Similarly, the pneumatic regulator 35 is also used for the lifting cylinder (shown here, only the lifting cylinder 20a ') for moving the curl straightening bar 13 provided on the opposite side of the suction table 10 in the vertical direction. Supply air pressure through

These pneumatic regulators 34 and 35 are generally called electro-pneumatic regulators, and convert control signals from a control device (not shown) into air pressure, and convert this air pressure to the lifting cylinders 20a and 20b and the lifting cylinder ( 20a ').

Therefore, by changing the control signal supplied to the pneumatic regulators 34 and 35, the air pressure to the lifting cylinders 20a and 20b and the lifting cylinder 20a 'can be changed. When the air pressure supplied to the lifting cylinders 20a and 20b and the lifting cylinder 20a 'is changed, the driving pressures of the up and down motions of the curl correction bars 14 and 13 are changed, and the curl correction bars 14 and 13 are changed. The pressing force for pressing the film 1 onto the suction table 10 is changed.

Therefore, by controlling the air pressure regulators 34 and 35 by the control device, the pressing force which the curl correction bar 14 and 13 presses the film 1 to the adsorption table 10 can adjust, and the The curls can be satisfactorily corrected, and the entire adsorption target area of the film 1 can be brought into a flat state with high accuracy, and the suction table 10 can be vacuum adsorbed and held.

1: film
2: unwinding film roll
3: winding-up film roll
4, 5: guide roll
6, 7: lifting guide roll
8, 9: adsorption bar
10: adsorption table
10a: side portion
11: unwinding side shaft motor
12: winding side shaft motor
13, 14: curl straightening bar
15: application head
16: unwinding part
17: applicator
18: winding part
19: curl
20a, 20b: lifting cylinder
21a, 21b: cylinder shaft
22a, 22b: width alignment cylinder
23a, 23b: cylinder shaft
24: adsorption surface
25: center region adsorption unit
26: peripheral area adsorption unit
27: adsorption hole
28: center area adsorption hole
29: peripheral area adsorption holes
25: center region adsorption unit
26: peripheral area adsorption unit
27: adsorption hole
28: center area adsorption hole
29: peripheral area adsorption holes
30: film presence detection sensor
31: index hole
32a: beam light emitting device
32b: detection sensor
33: light beam
34, 35: air pressure regulator

Claims

An upstream guide roll for unwinding and conveying a roll-shaped film, an adsorption table for adsorbing and holding the unwinded film, a coating head for applying a liquid coating material onto the film adsorbed and held in the adsorption table, In the inkjet coating device which consists of a downstream guide roll which conveys the said film to which the coating material was apply | coated, and wound up in roll shape,
A curling correction bar is provided which presses both side portions of the application target area mounted on the adsorption surface of the adsorption table of the film to the adsorption surfaces of the adsorption table to widen the sides of the adsorption table,
It has the take-out side shaft motor of the said film which adds a torque in the reverse rotation direction and tension in the longitudinal direction of the said film, and the take-up rotation direction of the said film,
The curls generated at both side portions of the film-coated area of the film are corrected by the curl straightening bar, so that the entire application area is made flat and adsorbed and held uniformly on the suction surface of the suction table. An inkjet coating device.

The said adsorption surface of the said adsorption table is divided into the center area | region and the peripheral area | region on both sides of the said center area | region with respect to the direction perpendicular | vertical to the conveyance direction of the said film,
A control unit for controlling the operation of the vacuum suction hole in the center region and the operation of the vacuum suction hole in the peripheral region;
By the control of the control unit,
With the loading of the application target area of the film on the adsorption table, a vacuum suction hole in the central area is operated to vacuum hold and hold a region facing the central area of the application target area,
The vacuum suction hole in the peripheral region is operated with the curl correction of both side edge portions of the film-targeted area of the film loaded on the suction table by the curl correction bar to operate the vacuum suction hole in the peripheral area of the application target area. An inkjet coating apparatus, wherein the opposing area is held under vacuum suction.

The inkjet coating apparatus of Claim 1 or 2 provided with the means for detecting the floating from the adsorption surface of the said adsorption table of the said film vacuum-adsorbed to the said adsorption table.

The lifting operation of the said curl correction bar of Claim 1 or 2 which adjusts the force which pushes the both sides of the area | region to apply | coated of the said film by the said curl correction bar to both sides of the said suction table, and widens. An inkjet coating device, comprising means for adjusting the air pressure of the elevating cylinder to be driven.

The film rolled up in roll shape is unwound and conveyed by the guide roll of an upstream, and the application | coating object area of the unwinding said film is mounted in the adsorption surface of an adsorption table, and a liquid is applied to the said application object area | region of the said film by an application head. In the inkjet coating method in which the coating material of is apply | coated and the said film to which the said coating material was apply | coated is conveyed by the guide roll of a downstream side, and wound up in roll shape,
Torque is applied to the unwinding side shaft motor of the film in the reverse rotational direction from the unwinding rotational direction of the film to apply tension in the longitudinal direction of the film,
Both sides of the area to be coated of the film mounted on the adsorption surface of the adsorption table are pressed to the adsorption surface by a curl straightening bar and widened to the side sides of the adsorption table to be adsorbed and held on the adsorption surface. Inkjet application method.