JP2009178660A - Coater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coater for applying a prescribed quantity of a coating liquid to a sheet or board, wherein the length of the coater is reduced. <P>SOLUTION: The coater 1 for coating a coating sheet 5 with a desired quantity of the coating liquid has a bar holder 370 arranged below the coating sheet 5 to store the coating liquid, a coating Meyer bar 381 arranged in the upstream side of the advancing direction of the coating sheet 5 in the upper side region of the bar holder 370 to apply the coating liquid of the bar holder 370 onto the coating sheet 5, a regulating Meyer bar 382 arranged in the downstream side of the advancing direction of the coating sheet 5 in the upper side region of the bar holder 370 to regulate the coating quantity of the coating liquid applied to the coating sheet 5, and a backup roll 302 which is pivotally supported above the bar holder 370 so as to be freely rotatable and presses the coating sheet 5 to the regulating Meyer bar 382. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coating apparatus that coats a predetermined amount of a coating liquid on a sheet, a board, or the like.

  As disclosed in Patent Document 1, a conventional coating apparatus includes a backup roll that feeds a sheet-like material in a predetermined direction, and a sheet-like material that is applied to the surface of the sheet-like material when passing through the backup roll. A bat for supplying a working solution to form a coating film, and a coater head for regulating the coating film on the surface of the sheet-like material to a predetermined thickness at a position above the backup roll. Is a long cylindrical body that can be attached and detached at a predetermined position, and both ends thereof are closed, and a slit-like coating liquid discharge port is formed along the longitudinal direction on the side facing the surface of the sheet-like material. There is a configuration one.

JP-A-6-434

  In the above conventional configuration, the coating amount is regulated by the coater head disposed above the backup roll. To change the traveling direction of the sheet material, a guide roll that changes the traveling direction of the sheet material is applied to the coater. It is necessary to dispose it in the subsequent stage of the head, and the disposition interval between the guide roll and the coater head is a factor that increases the apparatus length of the coating apparatus. For this reason, conventionally, it is desired to shorten the length of the coating apparatus so that the coating line and the coating machine equipped with the coating apparatus can be miniaturized.

  This invention is made | formed in view of the subject mentioned above, The objective is to provide the coating device which shortens apparatus length.

Means and effects for solving the problems

  The present invention is a coating apparatus for applying a coating medium to a coating object with a desired coating amount, and is disposed below the coating object, and a storage member that stores the coating medium. A coating member that is disposed on the upstream side in the traveling direction of the coating object in the upper region of the storage member, and that applies the coating medium of the storage member to the coating object; and A regulating member that is arranged on the downstream side in the advancing direction of the coating object in the upper region and that regulates the coating amount of the coating medium coated on the coating object, and rotates above the storage member A pressing guide roll that is freely supported and presses the coating object against the regulating member.

  According to said structure, since a coating member and a control member are arrange | positioned in the upstream and downstream in the upper area | region of a storage member, a coating medium is applied to a coating target object, and coating amount A series of processes for regulating the above can be realized with a short apparatus length. Further, since the pressing guide roll that presses the coating object against the regulating member is rotatably disposed above the storage member, the traveling direction of the coating object can be changed by the pressing guide roll. The advancing direction of the work object can be changed above the storage member immediately after the coating amount is regulated. As a result, the apparatus length can be shortened as compared with the case where the traveling direction is changed by the guide roll disposed at the subsequent stage after the coating amount is regulated as in the prior art. As a result, it is possible to achieve downsizing in the apparatus length of the coating apparatus, and thus it is possible to realize downsizing of the coating line and the coating machine provided with the coating apparatus.

  Furthermore, since the direction of travel of the coating object can be switched between when the pressing guide roll is used for changing the direction of travel of the coating object and when it is not used, it is easy to switch the direction of travel of the coating object. And it can be completed in a short time. As a result, it is suitable for coating objects with various bending strengths, such as coating objects whose traveling direction cannot be changed due to a large bending strength, and coating objects whose traveling direction can be easily changed due to a small bending strength. It can be applied by a simple coating route.

  In the coating apparatus according to the present invention, the coating member and the regulating member may be formed by Mayer bars that are rotatably supported.

  According to said structure, since the coating member and the control member are formed with the Mayer bar which can make a diameter small, the space | interval of a coating member and a control member can be narrowed. Thereby, since the exposed surface of a coating medium can be made small and the length of a storage member can be shortened, apparatus length can be shortened further.

  In the coating apparatus of the present invention, the coating member and the regulating member are provided integrally with the storage member, and have a support mechanism that supports the storage member so as to be inclined at an arbitrary angle. May be.

  According to the above configuration, the storage member can be changed to an arbitrary angle by the support mechanism, and the coating member and the regulation member are provided integrally with the storage member. The positional relationship with the storage member can be kept constant. Therefore, even when the approach angle of the coating object to the coating apparatus is different, it can be easily adjusted to be a stable coating form by changing the angle of the storage member. As a result, a new guide roll for adjusting the entry angle of the coating object is not necessary, so that the apparatus length can be further shortened.

  It is a coating apparatus of this invention, Comprising: You may have the temperature adjustment mechanism which changes and maintains the temperature of the coating medium stored by the said storage member to predetermined temperature.

  According to the above configuration, by adjusting the temperature of the coating medium by the temperature adjusting mechanism, it is possible to perform coating while maintaining the physical properties such as the viscosity of the coating medium in a stable state. Can be increased.

  The present invention is a coating apparatus for applying a coating medium with a desired coating amount to various types of coating objects having different flexural strengths, and is disposed below the coating object, and the coating medium Is disposed on the upstream side in the traveling direction of the coating object in the upper region of the storage member, and a holder support mechanism that pivotally supports the bar holder so as to be rotatable at an arbitrary angle. In addition, a coating Mayer bar that is rotatably supported by the bar holder and coats the coating medium of the storage member onto the coating target, and the coating target in an upper region of the storage member A regulating Mayer bar that is disposed on the downstream side of the traveling direction and is rotatably supported by the bar holder and regulates the coating amount of the coating medium coated on the coating object. The shaft is rotatably supported above the storage member. , And a the coating object modifiable pressing guide rolls the traveling direction along with pressing the coating object in the regulating member.

  According to the above configuration, since the coating Mayer bar and the restriction Mayer bar are arranged on the upstream side and the downstream side in the upper region of the storage member of the bar holder, the coating medium is applied to the coating object. A series of processes for coating and regulating the coating amount can be realized with a short apparatus length. Further, a pressing guide roll that presses the coating object against the restriction Mayer bar is disposed above the storage member, and the pressing guide roll allows the traveling direction of the coating object to be changed. Can be changed above the storage member immediately after the regulation of the coating amount. As a result, the apparatus length can be shortened as compared with the case where the traveling direction is changed by the guide roll disposed at the subsequent stage after the coating amount is regulated as in the prior art. As a result, it is possible to achieve downsizing in the apparatus length of the coating apparatus, and thus it is possible to realize downsizing of the coating line and the coating machine provided with this coating apparatus.

  Furthermore, since the direction of travel of the coating object can be switched between when the pressing guide roll is used for changing the direction of travel of the coating object and when it is not used, it is easy to switch the direction of travel of the coating object. And it can be completed in a short time. As a result, it is suitable for coating objects with various bending strengths, such as coating objects whose traveling direction cannot be changed due to a large bending strength, and coating objects whose traveling direction can be easily changed due to a small bending strength. It can be applied by a simple coating route.

  An embodiment of the present invention will be described below with reference to FIGS.

(overall structure)
The coating apparatus according to the present embodiment is configured to apply a coating medium to various types of coating objects having different flexural strengths with a desired coating amount. Specifically, the storage member is disposed below the coating object and stores the coating medium, and the storage member is disposed on the upstream side in the traveling direction of the coating object in the upper region of the storage member. A coating member that applies a medium to a coating object, and a coating medium that is disposed on the downstream side in the traveling direction of the coating object in a region above the storage member and is applied to the coating object. It is configured to include a regulating member that regulates the amount, and a pressing guide roll that is rotatably supported above the storage member and presses the coating object against the regulating member.

  Here, the “coating object” is not limited to the bending strength and thickness, and may be, for example, a film-like plastic sheet, a metal sheet, or a paper sheet. Furthermore, a sheet-like board (a wooden board, a metal plate, a plastic board, etc.), a sheet | seat, a board, etc. with an uneven surface may be sufficient.

  Examples of the “coating medium” include resin diluted with a solvent, paint, ink, glue, and solventless resin. The “storage member” may be a bar holder formed in an annular shape, which will be described later, or may be formed in a container shape as long as it stores the coating medium.

  The “coating member” is not particularly limited as long as the coating medium can be applied to a coating object, but is preferably a Mayer bar. The Mayer bar is a coated member in which a wire like a thin piano wire is wound around a round bar, the coating medium remains in the troughs formed next to the wound wire, and the amount remaining depends on the wound diameter It is.

  The “regulatory member” is not particularly limited as long as it is applicable to post-finishing coating that regulates the excess coating amount applied to the coating medium, but is preferably a Mayer bar. .

(Example configuration)
The coating apparatus will be described more specifically. As shown in FIGS. 1 and 2, the coating apparatus 1 is applied to the coating apparatus main body 3 that applies a coating medium to the coating sheet 5 with a desired coating amount, and to the coating apparatus main body 3. It has the carrying-in mechanism 2 which carries in while guiding the work sheet 5 from the outside, and the carrying-out mechanism 4 which carries out the coating sheet 5 coated in the coating apparatus main body 3 outside.

(Import mechanism 2)
As shown in FIG. 2, the carry-in mechanism 2 is arranged on the upstream side in the traveling direction of the coating sheet 5 with respect to the coating apparatus main body 3. The carry-in mechanism 2 has a nip roll 206. The nip roll 206 is arranged so as to be orthogonal to the traveling direction of the coating sheet 5. Both end portions of the nip roll 206 are rotatably supported by bearing members 212 and 213. These bearing members 212 and 213 are supported at the lower ends of the roll support mechanisms 210 and 211.

  Each of the roll support mechanisms 210 and 211 is erected in the vertical direction. The roll support mechanisms 210 and 211 include elevating cylinders 214 and 215 that elevate and lower the nip roll 206. The elevating cylinders 214 and 215 can adjust the amount of forward / backward movement of the cylinder rod. Thereby, the roll support mechanisms 210 and 211 raise and lower the nip roll 206 to an arbitrary height position by the raising and lowering cylinders 214 and 215, so that the coating sheet 5 is applied to the feeding roll 205 and the nip roll 206 described later at a desired pressure. It is possible to pinch.

  A feeding roll 205 is provided below the nip roll 206. The feeding roll 205 is disposed so that the axis is parallel to the axis of the nip roll 206. That is, the roll surfaces of the nip roll 206 and the feeding roll 205 are opposed to each other in parallel. A rotation drive mechanism 201 is connected to one end of the feeding roll 205. The rotational drive mechanism 201 includes a drive motor 202 that can rotate at an arbitrary rotational speed, and a speed reducer 203 that transmits rotational driving force to the feeding roll 205 while reducing the rotational speed of the drive motor 202. The rotation drive mechanism 201 rotates the feeding roll 205 at a predetermined rotational speed so as to feed the coating sheet 5 sandwiched between the feeding roll 205 and the nip roll 206 to the coating apparatus main body 3 at a desired traveling speed. It has become.

  A guide roll 207 is disposed above the nip roll 206. The guide roll 207 is disposed so that its axis is parallel to the axis of the nip roll 206. Both end portions of the guide roll 207 are rotatably supported on the upper portions of the above-described roll support mechanisms 210 and 211. The guide roll 207 guides the coating sheet 5 coated in the carry-in mechanism 2 to a subsequent process such as a winding device or a drying furnace.

  The carry-in mechanism 2 configured as described above allows the coating sheet 5 having various thicknesses to be carried into the coating apparatus main body 3 at an arbitrary traveling speed by the guide roll 207 and the feeding roll 205 provided so as to be movable up and down. It is configured to have a function and a function of guiding the coated sheet 5 after coating to a subsequent process existing on the upstream side by the guide roll 207.

(Unloading mechanism 4)
The carry-out mechanism 4 is arranged on the downstream side in the traveling direction of the coating sheet 5 with respect to the coating apparatus main body 3. The carry-out mechanism 4 includes a guide roll 405 that guides the coated sheet 5 after coating. Both ends of the guide roll 405 are rotatably supported by a bearing mechanism (not shown). In addition, it is preferable that the guide roll 405 can be moved up and down to an arbitrary height position. The unloading mechanism 4 configured as described above is configured to have a function of guiding the coated sheet 5 after coating to a subsequent process existing on the downstream side.

(Coating device body 3)
The coating apparatus main body 3 is disposed between the carry-in mechanism 2 and the carry-out mechanism 4. The coating apparatus main body 3 includes a cylindrical bar holder 370 (storage member). The bar holder 370 is arranged below the coating sheet 5 carried in from the carry-in mechanism 2 and is configured to store the coating liquid while exposing it to the outside. The bar holder 370 is provided so that the shaft core is horizontally disposed and is orthogonal to the traveling direction of the coating sheet 5. Details of the bar holder 370 will be described later.

  As shown in FIG. 3, the bar holder 370 is pivotally supported by the holder support mechanism 377 so as to be rotatable and fixed at an arbitrary angle. The angle of the holder support mechanism 377 means an angle around the axis of the holder support mechanism 377. The holder support mechanism 377 includes a support plate 375 fixed to both ends of the bar holder 370, and a support member 376 that supports the support plate 375 in a separable manner by fastening bolts (not shown). Thus, the holder support mechanism 377 can change the angle of the bar holder 370 by changing the fastening position of the support plate 375 with respect to the support member 376. In other words, the holder support mechanism 377 has a function of changing an arrangement angle of a coating Mayer bar 381 and a regulation Mayer bar 382 which will be described later. Here, the “arrangement angle” means an intersection angle between a line segment connecting the center points of the coating Mayer bar 381 and the restriction Mayer bar 382 and the horizontal plane.

  The holder support mechanism 377 may be configured by a rotation drive mechanism that can automatically change the rotation angle. In this case, it becomes possible to automatically set the holder support mechanism 377 to the optimum rotation angle according to the type of the coating sheet 5.

  The bar holder 370 is provided with a coating Mayer bar 381 and a restriction Mayer bar 382. The coating Mayer bar 381 and the regulation Mayer bar 382 are integrally provided with respect to the bar holder 370 so as to change the arrangement angle with the rotation of the coating Mayer bar 381. Note that “provided integrally” means a state in which the members are connected to each other by fastening bolts or the like.

  As shown in FIG. 8, the coating Mayer bar 381 and the restriction Mayer bar 382 are set so that the axis is parallel to the axis of the bar holder 370. The coating Mayer bar 381 is arranged on the upstream side in the traveling direction of the coating sheet 5 in the upper region of the bar holder 370. On the other hand, the restriction Mayer bar 382 is arranged on the downstream side in the traveling direction of the coating sheet 5 in the upper region of the bar holder 370. As a result, the coating apparatus body 3 is coated on the coating sheet 5 because the coating Mayer bar 381 and the regulation Mayer bar 382 are arranged on the upstream side and the downstream side in the upper region of the bar holder 370. A series of processes for applying a working liquid and regulating the coating amount is realized with a short apparatus length.

  The coating Mayer bar 381 is detachable so that it can be replaced according to the type of coating sheet 5 and the coating amount. The coating Mayer bar 381 has various patterns and irregularities such as meshes formed on the bar surface, and the coating liquid can be pumped by these patterns and irregularities.

  The coating Mayer bar 381 is rotatably supported on the surface portion of the bar holder 370. As shown in FIG. 1, one end of the front side of the coating Mayer bar 381 is connected to the rotation drive mechanism 361 via a connecting member 364. The rotation drive mechanism 361 includes a drive motor and a speed reducer, like the rotation drive mechanism 201 in the carry-in mechanism 2 described above. The rotational drive mechanism 361 is configured to rotationally drive the coating Mayer bar 381 at an arbitrary rotational speed. As a result, the coating Mayer bar 381 rotates to move the coating liquid stored in the bar holder 370 toward the coating sheet 5, and a predetermined amount of coating liquid is brought into contact with the coating sheet 5. Coating is applied to the coating sheet 5.

  On the other hand, as shown in FIGS. 8 and 9, the restriction Mayer bar 382 is disposed on the downstream side of the coating Mayer bar 381. The regulation Mayer bar 382 has a smooth bar surface. The restriction Mayer bar 382 is rotatably supported on the surface portion of the bar holder 370. As shown in FIG. 1, one end portion on the front side of the restriction Mayer bar 382 is coupled to the rotation drive mechanism 362 via a coupling member 365. The rotational drive mechanism 362 is configured to rotationally drive the restriction Mayer bar 382 at an arbitrary rotational speed. As a result, the regulation Mayer bar 382 rotates while contacting the coating sheet 5, thereby uniformizing the coating solution of the coating sheet 5 coated with the bar holder 370 and a predetermined coating amount. It has come to regulate.

  A cylindrical backup roll 302 (pressing guide roll) is arranged above the bar holder 370. The backup roll 302 is set so that its axis is parallel to the axis of the bar holder 370. As shown in FIG. 4, both ends of the backup roll 302 are rotatably supported by bearing members 313 and 343. Each of the bearing members 313 and 343 constitutes a part of the roll support mechanism 305 and 335. The roll support mechanisms 305 and 335 include bearing members 313 and 343 and elevating cylinders 309 and 339 that raise and lower the bearing members 313 and 343 so as to be stopped at an arbitrary height position.

  In addition, a rotation driving mechanism 307 is connected to one end portion on the back side of the backup roll 302. The rotation drive mechanism 307 enables the backup roll 302 to rotate at an arbitrary rotation speed. As a result, as shown in FIG. 8, the backup roll 302 has a function of pressing the coating sheet 5 against the restriction Mayer bar 382 with an arbitrary pressing force, and advances the coating sheet 5 along the roll surface. This has the function of changing the traveling direction of the coating sheet 5 to the upstream side. Thereby, since the coating apparatus main body 3 can change the advancing direction of the coating sheet 5 with the backup roll 302 arrange | positioned above the bar holder 370, the advancing direction of the coating sheet 5 is applied to the coating amount. The length of the apparatus can be shortened because it can be changed above the backup roll 302 immediately after the regulation.

  A cylindrical first adjustment roll 301 is disposed on the upstream side of the backup roll 302. The first adjusting roll 301 is set so that its axis is parallel to the axis of the bar holder 370. As shown in FIG. 1, both ends of the first adjusting roll 301 are rotatably supported by bearing members 312 and 342. Each of the bearing members 312 and 342 constitutes a part of the roll support mechanism 306 and 336. The roll support mechanisms 306 and 336 include bearing members 312 and 342 and elevating cylinders 310 and 340 that raise and lower the bearing members 312 and 342 so as to be stopped at an arbitrary height position. Accordingly, as shown in FIG. 8, the first adjustment roll 301 sets the height position by the roll support mechanisms 306 and 336 so that the coating sheet 5 advances to the coating Mayer bar 381 of the bar holder 370. It has a function to adjust the approach angle.

  On the other hand, a cylindrical second adjustment roll 303 is disposed on the downstream side of the backup roll 302. The second adjusting roll 303 is set so that its axis is parallel to the axis of the bar holder 370. As shown in FIG. 1, both ends of the first adjusting roll 301 are pivotally supported by bearing members 315 and 345. Each of the bearing members 315 and 345 constitutes a part of the roll support mechanism 304 and 334. The roll support mechanisms 304 and 334 include bearing members 315 and 345 and elevating cylinders 311 and 341 that raise and lower the bearing members 315 and 345 so as to be stopped at an arbitrary height position.

  In addition, a rotation driving mechanism 308 is connected to one end of the second adjustment roll 303 on the back side. The rotation drive mechanism 308 enables the second adjustment roll 303 to rotate at an arbitrary rotation speed. Thereby, as shown in FIG. 9, the second adjustment roll 303 has a function of feeding the coating sheet 5 downstream by setting the height position with the roll support mechanisms 306 and 336.

  The coating apparatus main body 3 configured as described above can switch the traveling direction of the coating sheet 5 depending on whether the backup roll 302 is used for changing the traveling direction of the coating sheet 5 or not. As a result, the switching of the traveling direction of the coating sheet 5 can be completed easily and in a short time. Furthermore, it is suitable for the coating sheet 5 having various bending strengths such as the coating sheet 5 whose traveling direction cannot be changed due to a large bending strength, and the coating sheet 5 whose traveling direction can be easily changed due to a small bending strength. Can be applied by coating route.

  A support base 352 and a storage wall 351 provided on the upper surface of the support base 352 are disposed below the coating apparatus main body 3. The storage wall 351 is disposed below the bar holder 370 and is formed in a rectangular shape so as to surround the outer periphery of the lower region of the backup roll 302. The support base 352 and the storage wall 351 form a collection container 506 having an upper surface opened, and have a function of receiving and storing the coating liquid dropped from the bar holder 370. Moreover, the support base 352 protrudes to the front side as shown in FIG. The rotation driving mechanism 361 and the rotation driving mechanism 362 described above are fixed to the protruding portion of the support base 352. Further, a caster (not shown) is provided on the lower surface of the support base 352, and the caster can easily move the coating apparatus main body 3 to an arbitrary place. The casters may be provided in all of the carry-in mechanism 2, the coating apparatus main body 3, and the carry-out mechanism 4. In this case, the combination and distance of each part of the coating apparatus 1 can be easily changed.

(Bar holder 370)
As shown in FIGS. 8 and 9, the bar holder 370 provided in the coating apparatus main body 3 is formed in a hollow cylindrical shape. On the outer surface side of the bar holder 370, a first groove 371c for loosely fitting a part of the coating Mayer bar 381 and a second groove 371a for loosely fitting a part of the regulating Mayer bar 382 are formed. Yes. A number of through holes 371b are formed in the first groove 371c. As shown in FIG. 5, these through holes 371b are arranged at equal intervals along the first groove 371c. A communication bolt 378 is screwed into the through hole 371b. The communication bolt 378 has a communication hole communicating from the bolt head to the bolt bottom. The communication bolt 378 allows the coating liquid stored inside the bar holder 370 to leak into the first groove 371c at a flow rate corresponding to the hole diameter by bringing the inside and outside of the bar holder 370 into communication. It has become.

  In addition, as for the communication bolt 378, what has a plurality of hole diameters is prepared in advance, so as to be in an optimum coating state according to the coating amount, the coating speed, the type of the coating sheet 5, etc. It can be replaced as appropriate.

  As shown in FIGS. 8 and 9, a pipe 372 is inserted into the bar holder 370. The pipe 372 has an axis aligned with the axis of the bar holder 370, and the inside of the bar holder 370 is divided into an inner peripheral space 373 and an outer peripheral space 374 located outside the inner peripheral space 373. ing. The pipe 372 has a number of through holes 372a. These through holes 372a are arranged at equal intervals along the axial direction of the bar holder 370, and are set so as to be located on the opposite side to the arrangement position of the first groove 371c having the through holes 371b. Has been.

  In the bar holder 370, the outer peripheral side space 374 is shielded in a liquid-tight state by the support plate 375 described above. The support plate 375 has a through hole 375a at the center. The through hole 375a is in close contact with both ends of the pipe 372. Both ends of the pipe 372 are connected to a coating liquid supply system, and the coating liquid supply system supplies the coating liquid to the pipe 372 at an arbitrary flow rate.

  The bar holder 370 configured as described above has a bar holder 370 through a through hole 372a formed in the pipe 372 when the coating liquid is supplied to the inner circumferential space 373 (primary storage portion) of the pipe 372 at a predetermined pressure. The coating liquid is discharged into the outer peripheral side space 374 (secondary storage part) that is a gap between the pipe 372 and the pipe 372. As a result, the coating liquid supplied into the bar holder 370 can minimize the influence of pressure loss and the like due to flow, so that the pressure of the coating liquid is made uniform in the outer space 374. Then, the bar holder 370 causes the coating liquid in the outer peripheral space 374 to leak from the communication hole of the communication bolt 378 to the first groove 371 c and is pumped up by the coating Mayer bar 381 and applied to the coating sheet 5. It has become. The bar holder 370 may be temperature adjustable by a heater.

(Coating liquid supply system)
The coating liquid supply system is configured to feed the coating liquid in a sealed state. Specifically, as shown in FIG. 6, the coating liquid supply system has valves 501 and 505 connected to both ends of the pipe 372 via pipes. One valve 501 is connected to a pump 502 capable of adjusting the supply amount. The pump 502 is connected to the supply tank 503. In the supply tank 503, unused coating liquid is accommodated. On the other hand, the other valve 505 is connected to the recovery tank 504. The collection tank 504 is also connected to a collection container 506, and collects the coating liquid stored in the collection container 506. The coating liquid supply system configured as described above supplies the coating liquid stored in the supply tank 503 to the pipe 372 by the pump 502, while maintaining the inside of the bar holder 370 at a predetermined pressure, By performing a process of collecting the surplus coating liquid in the collection tank 504, stable coating can be performed.

  Further, the coating liquid supply system includes a temperature control heater (not shown), and the viscosity of the coating liquid can be adjusted by heating the coating liquid to a predetermined temperature as necessary.

  The coating liquid supply system may be configured as shown in FIG. Specifically, the pumps 502 and 506 are connected to both ends of the pipe 372 via valves 501 and 505, and the coating liquid is simultaneously supplied from both ends of the pipe 372, and the recovery tank 504 is connected to the recovery container 506. The coating liquid in the recovery container 506 may be recovered in the recovery tank 504. In this case, since the coating liquid is supplied from both ends of the pipe 372 so that the coating liquid can be present in the bar holder 370 with a large pressure, the coating liquid can be applied even if the hole diameter of the communication bolt 378 is small. It becomes easy to increase the amount.

(Control configuration)
The coating apparatus 1 has a coating control panel as shown in FIG. The coating control panel includes a coating control circuit 700 that performs overall control related to coating, an operation unit 709 that outputs an operation command signal to the coating control circuit 700, and a display unit 710 that displays information related to coating. And a storage device 711 for storing information relating to coating.

  The coating control circuit 700 includes driving circuits 704 to 707 for driving the lifting cylinders 214, 215, 310, 340, 309, 339, 311 and 341 provided in the coating apparatus main body 3 and the like, and coating of the bar holder 370. A temperature adjusting unit 708 for controlling the temperature of the liquid to a predetermined temperature, a CPU 703 for controlling the operation of the coating apparatus main body 3 and the like, a work RAM 701 for temporarily storing various data when the operation of the CPU 703 is executed, It has a ROM 702 for storing control programs and data related to work operations.

  An operation unit 709, a display unit 710, and a storage device 711 are connected to the coating control circuit 700. The operation unit 709 includes a keyboard, a mouse, and the like that receive an operator's operation, and outputs various types such as the type of the coating sheet 5 as data to the coating control circuit 700 as operation command signals. The display unit 710 includes a liquid crystal display device and the like, and displays various information such as information input by an operator and a coating state using characters, images, and moving images. The storage device 711 is a large-capacity storage device such as a hard disk device. The storage device 711 stores various data such as the type of coating sheet, the temperature of the coating liquid, the coating amount, the type of coating liquid, and the roll position.

  As a result, when the coating condition such as the type of the coating liquid or the coating sheet 5 is input by the operator, the coating control panel displays the heating temperature and the position of the guide roll 207 according to the coating condition. It is possible to automatically set the coating form to an optimum state. The coating control panel can also individually adjust the roll position and the liquid temperature by the operation of the operator. As a result, the coating control panel can perform automatic setting and manual setting of the coating form, and can also finely adjust the coating form.

(Running route of coating sheet 5)
Specifically, as shown in FIG. 8, when the coating sheet 5 is a sheet or film having a small flexural strength, the coating sheet 5 proceeds from the diagonally downward toward the bar holder 370 as shown in FIG. 8. In this manner, the height position of the first adjustment roll 301 is set. The rotation angle of the bar holder 370 is set so that the restriction Mayer bar 382 faces the backup roll 302. The coating sheet 5 is set by the backup roll 302 and the second adjustment roll 303 so that the traveling direction is directed to the downstream side.

  On the other hand, as shown in FIG. 9, when the coating sheet 5 is a plate material having a large flexural strength, the height of the first adjustment roll 301 so that the coating sheet 5 advances toward the bar holder 370 in a horizontal state. The position is set above the coating sheet 5. Further, the rotation angle of the bar holder 370 is set so that the height positions of the tops of the coating Mayer bar 381 and the regulation Mayer bar 382 coincide. And the coating sheet 5 is set so that the advancing direction may go straight downstream in the state where it is placed on the guide roll 405.

(Operation)
In the above configuration, the operation of the coating apparatus 1 will be described.

  When coating conditions such as the type of coating sheet 5 to be coated and the coating amount are determined, first, as shown in FIG. 5, a communication bolt 378 having a hole diameter corresponding to the coating amount is provided. Mounted on the bar holder 370. At this time, since the discharge width can be arbitrarily set by the number of the communication bolts 378, the coating width can be easily regulated. Thereafter, as shown in FIG. 4, the coating Mayer bar 381 and the bar holder 370 corresponding to the coating conditions are set on the bar holder 370. Then, the bar holder 370 is set to a predetermined rotation angle.

  Note that the mounting operation of the communication bolt 378 and the like and the setting operation of the rotation angle of the bar holder 370 can be easily performed by pulling the coating apparatus main body 3 from between the carry-in mechanism 2 and the carry-out mechanism 4 to the outside. . In general, since the Mayer bar devices required at two locations are gathered at one location of the bar holder 370, the coating device main body 3 is reduced in size so that it can be easily handled such as moving. . Furthermore, since two different types of Mayer bars can be mounted and combined on one bar holder 370, the types of coating conditions (selection range of coating methods) are also increased. .

  For example, as shown in FIG. 8, in the case of the coating sheet 5 having a large flexural strength such as a film, the restriction Mayer bar 382 and the backup roll 302 are set so as to exist on the vertical line. Further, as shown in FIG. 9, in the case of the coating sheet 5 having a large bending strength such as a wood, a veneer plate, a metal plate, etc., the coating Mayer bar 381 and the regulation Mayer bar 382 are disposed horizontally. Thus, the rotation angle of the bar holder 370 is set.

  Thereafter, as shown in FIG. 10, the coating conditions are input by the operator via the operation unit 709. The input coating condition is transmitted to the coating control circuit 700 as an operation command signal. The coating control circuit 700 refers to and extracts coating form data corresponding to the type, and determines the roll position, the heating temperature of the coating liquid, the traveling speed of the coating sheet 5 and the coating amount included in the coating form data. Determine and set automatically. When the rotation operation of the bar holder 370 is automated by a rotation mechanism (not shown), the rotation angle of the bar holder 370 may be automatically set to an angle corresponding to the coating form.

  Thereafter, when a start button (not shown) in the operation unit 709 is pressed, the coating sheet 5 starts running and the coating liquid is supplied to the bar holder 370. At this time, since the coating liquid supply system is hermetically sealed and the bar holder 370 is also hermetically sealed, the coating liquid does not come into contact with outside air until immediately before coating is performed. Thereby, it is possible to prevent quality deterioration such as clay change due to evaporation of the coating liquid. That is, the coating liquid is transported without being exposed to the outside air by a pump or the like, and the slurry liquid (powder mixing, precipitation) is applied in a timeless manner by rotating a small-diameter roll (coating Meyer bar 381). ) And thermoplastic resins can be processed. In addition, consideration of the surrounding environment is possible by preventing evaporation of a large amount of solvent.

  Then, after the coating liquid is applied to the coating sheet 5 from the bar holder 370 via the coating Mayer bar 381, the coating liquid is regulated by the regulation Mayer bar 382 to a predetermined amount. Coating according to conditions is performed. At this time, the coating Mayer bar 381 and the restriction Mayer bar 382 are attached to the bar holder 370 and gathered at one place, so that the distance between the bars 381 and 382 is short.

  As a result, the conventional general idea of the conventional Mayer bar coating apparatus is a method in which a large amount of coating is first performed, and then quantitative coating is performed with the Mayer bar, and this is assembled in the bar holder 370. If there is, there is a place restriction in coating with a fast-drying paint or thermoplastic resin as the coating liquid (since two coating devices are required), it is necessary to process at a distance, that is, time. Become. As a result, when the thin film is quantified, it is possible to solve the problem that the film has been dried and hardened and cannot be applied to the thin film.

  When the coated sheet 5 is a coated sheet 5 having a small flexural strength, the coated sheet 5 is guided by the backup roll 302 and the second adjusting roll 303 in the reverse direction as shown in FIG. After the direction of travel is changed, it is sent to the subsequent process. On the other hand, when the bending strength of the coating sheet 5 is large, as shown in FIG. 9, the coating sheet 5 goes straight in the horizontal direction while being guided by the guide roll 405 and is sent out to the subsequent process.

  When the coating is completed, the coating apparatus main body 3 is pulled out and the coating liquid is cleaned. At this time, since the coating Mayer bar 381 and the restriction Mayer bar 382 are concentrated in one place of the bar holder 370, cleaning can be easily performed.

(Outline configuration)
As shown in FIGS. 8 and 9, the coating apparatus 1 according to the present embodiment applies a coating medium (coating sheet 5) to a coating object (coating liquid) with a desired coating amount. A storage member (bar holder 370) that is disposed below the coating object and stores the coating medium, and an upstream side in the traveling direction of the coating object in an upper region of the storage member. A coating member (coating Meyer bar 381) that is disposed and applies the coating medium of the storage member to the coating target; and a traveling direction of the coating target in an upper region of the storage member A regulating member (regulating Mayer bar 382) that is arranged on the downstream side and regulates the coating amount of the coating medium coated on the coating object, and is rotatably supported above the storage member. A pressing guide roll (back-up) for pressing the coating object against the regulating member. It is configured to have a roll 302) and.

  According to said structure, since a coating member and a control member are arrange | positioned in the upstream and downstream in the upper area | region of a storage member, a coating medium is applied to a coating target object, and coating amount A series of processes for regulating the above can be realized with a short apparatus length. Further, since the pressing guide roll that presses the coating object against the regulating member is rotatably disposed above the storage member, the traveling direction of the coating object can be changed by the pressing guide roll. The advancing direction of the work object can be changed above the storage member immediately after the coating amount is regulated. As a result, the apparatus length can be shortened as compared with the case where the traveling direction is changed by the guide roll disposed at the subsequent stage after the coating amount is regulated as in the prior art. As a result, it is possible to achieve downsizing in the apparatus length of the coating apparatus, and thus it is possible to realize downsizing of the coating line and the coating machine provided with the coating apparatus.

  Furthermore, since the direction of travel of the coating object can be switched between when the pressing guide roll is used for changing the direction of travel of the coating object and when it is not used, it is easy to switch the direction of travel of the coating object. And it can be completed in a short time. As a result, it is suitable for coating objects with various bending strengths, such as coating objects whose traveling direction cannot be changed due to a large bending strength, and coating objects whose traveling direction can be easily changed due to a small bending strength. It can be applied by a simple coating route.

  Further, the coating member and the regulating member (coating Mayer bar 381 and regulating Mayer bar 382) in the coating apparatus 1 of the present embodiment are respectively formed by a Mayer bar rotatably supported. .

  According to said structure, since the coating member and the control member are formed with the Mayer bar which can make a diameter small, the space | interval of a coating member and a control member can be narrowed. Thereby, since the exposed surface of a coating medium can be made small and the length of a storage member can be shortened, apparatus length can be shortened further.

  In the coating apparatus 1 of the present embodiment, the coating member and the regulating member are integrally provided on the storage member, and a support mechanism (holder) that supports the storage member so as to be inclined at an arbitrary angle. The support mechanism 377) is included.

  According to the above configuration, the storage member can be changed to an arbitrary angle by the support mechanism, and the coating member and the regulation member are provided integrally with the storage member. The positional relationship with the storage member can be kept constant. Therefore, even when the approach angle of the coating object to the coating apparatus is different, it can be easily adjusted to be a stable coating form by changing the angle of the storage member. As a result, a new guide roll for adjusting the entry angle of the coating object is not necessary, so that the apparatus length can be further shortened.

  Further, as shown in FIG. 10, the coating apparatus 1 of the present embodiment has a temperature adjustment mechanism (a temperature adjustment unit 708, a heater) that changes and maintains the temperature of the coating medium stored in the storage member to a predetermined temperature. Etc.).

  According to the above configuration, by adjusting the temperature of the coating medium by the temperature adjusting mechanism, it is possible to perform coating while maintaining the physical properties such as the viscosity of the coating medium in a stable state. Can be increased.

  Moreover, the coating apparatus 1 of this embodiment applies a coating medium with a desired coating amount to various coating objects having different flexural strengths, and is disposed below the coating object. A bar holder that stores the coating medium, a holder support mechanism that pivotally supports the bar holder so that the bar holder can rotate at an arbitrary angle, and an upstream area in the traveling direction of the coating object in the upper region of the storage member. And a coating Mayer bar that is rotatably supported by the bar holder and coats the coating medium of the storage member onto the coating object, and an upper region of the storage member Is disposed downstream in the traveling direction of the coating object, and is rotatably supported by the bar holder and regulates the coating amount of the coating medium coated on the coating object Restriction Mayer bar and above the storage member Is rotatably supported, and is the coating object to a structure having said coating object modifiable pressing guide rolls the traveling direction along with pressing the regulating member.

  According to the above configuration, since the coating Mayer bar and the restriction Mayer bar are arranged on the upstream side and the downstream side in the upper region of the storage member of the bar holder, the coating medium is applied to the coating object. A series of processes for coating and regulating the coating amount can be realized with a short apparatus length. Further, a pressing guide roll that presses the coating object against the restriction Mayer bar is disposed above the storage member, and the pressing guide roll allows the traveling direction of the coating object to be changed. Can be changed above the storage member immediately after the regulation of the coating amount. As a result, the apparatus length can be shortened as compared with the case where the traveling direction is changed by the guide roll disposed at the subsequent stage after the coating amount is regulated as in the prior art. As a result, it is possible to achieve downsizing in the apparatus length of the coating apparatus, and thus it is possible to realize downsizing of the coating line and the coating machine provided with this coating apparatus.

  Furthermore, since the direction of travel of the coating object can be switched between when the pressing guide roll is used for changing the direction of travel of the coating object and when it is not used, it is easy to switch the direction of travel of the coating object. And it can be completed in a short time. As a result, it is suitable for coating objects with various bending strengths, such as coating objects whose traveling direction cannot be changed due to a large bending strength, and coating objects whose traveling direction can be easily changed due to a small bending strength. It can be applied by a simple coating route.

  The embodiments of the present invention have been described above, but only specific examples have been illustrated, and the present invention is not particularly limited. Specific configurations and the like can be appropriately changed in design. It should be noted that the actions and effects described in the embodiments of the present invention are merely a list of the most preferable actions and effects resulting from the present invention, and are limited to those described in the embodiments of the present invention. is not.

The perspective view of a coating apparatus. The front view of a coating apparatus. The side view of a coating apparatus. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. The perspective view of a bar holder. Explanatory drawing of a coating liquid supply system. Explanatory drawing of a coating liquid supply system. Explanatory drawing which shows the advancing direction of a coating sheet. Explanatory drawing which shows the advancing direction of a coating sheet. The control block diagram of a coating apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating apparatus 2 Carry-in mechanism 3 Coating apparatus main body 4 Unloading mechanism 5 Coating sheet 302 Backup roll 370 Bar holder 377 Holder support mechanism 381 Coating Mayer bar 382 Regulation Mayer bar

Claims (5)

A coating apparatus that coats a coating medium with a desired coating amount on a coating object,
A storage member disposed below the coating object and storing the coating medium;
A coating member disposed on the upstream side in the traveling direction of the coating object in the upper region of the storage member, and applying the coating medium of the storage member to the coating object;
A regulating member that is disposed on the downstream side in the traveling direction of the coating object in the upper region of the storage member and regulates the coating amount of the coating medium coated on the coating object;
A coating apparatus, comprising: a pressing guide roll that is rotatably supported above the storage member and presses the coating object against the regulating member.   The coating apparatus according to claim 1, wherein the coating member and the regulating member are each formed by a Mayer bar that is rotatably supported. The coating member and the regulating member are provided integrally with the storage member,
The coating apparatus according to claim 1, further comprising a support mechanism that supports the storage member to be tiltable at an arbitrary angle.   4. The coating apparatus according to claim 1, further comprising a temperature adjustment mechanism that changes and maintains a temperature of the coating medium stored in the storage member to a predetermined temperature. 5. . A coating apparatus for coating a coating medium with a desired coating amount on various coating objects having different bending strengths,
A bar holder disposed below the coating object and storing the coating medium;
A holder support mechanism for pivotally supporting the bar holder so as to be rotatable at an arbitrary angle;
The coating member is disposed on the upstream side in the traveling direction of the coating object in the upper region of the storage member, is rotatably supported by the bar holder, and the coating medium of the storage member is used as the coating object. A coating Mayer bar to apply to,
The coating medium that is disposed on the downstream side in the traveling direction of the coating object in the upper region of the storage member, is rotatably supported by the bar holder, and is coated on the coating object. A regulatory Mayer bar that regulates the coating amount of
And a pressing guide roll rotatably supported above the storage member and capable of pressing the coating object against the regulating member and changing a traveling direction of the coating object. apparatus.

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