JP6329865B2 - Coating device - Google Patents

Description

  The present invention relates to a coating apparatus.

  2. Description of the Related Art Conventionally, coating apparatuses that apply a coating material to a substrate are known. For example, there is an application device that applies a paint to a substrate using a knife-type doctor blade formed in a straight line (see Patent Document 1). In addition, there is a coating apparatus that applies a paint to a substrate using a comma-shaped doctor blade formed in an arc shape (see Patent Document 2).

JP 2005-279344 A JP 2006-81956 A

  However, in the configuration as in Patent Document 1, if the accuracy of the external shape of the doctor blade is not sufficient, or if the external shape changes due to wear of the doctor blade, the paint is uniformly applied to the substrate. There is a possibility that it cannot be applied. Further, in the configuration as described in Patent Document 2, if the distance between the doctor blade and the coating roll cannot be adjusted with high accuracy, the paint may not be uniformly applied to the substrate. .

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a coating apparatus that can uniformly apply a coating material to a substrate.

The coating apparatus according to the present invention that achieves the above object includes a blade, a biasing member, and a pressing member . The blade contacts the substrate through the paint and applies the paint to the substrate. The urging member is disposed to face the blade and urges the substrate toward the blade. The pressing member relatively adjusts the pressing force between the blade and the biasing member. Here, at least a portion of the blade facing the urging member protrudes toward the urging member and is formed in an arc shape and has an elastic force. The pressing member contacts the inner peripheral surface of the blade and presses the urging member while inserting the blade from the outer peripheral surface.

  The coating apparatus of this invention clamps a base material with the braid | blade and urging | biasing member which were formed in circular arc shape and were provided with the elastic force. That is, the blade presses the substrate uniformly by elastically deforming itself. Therefore, the coating apparatus of the present invention can uniformly apply the coating material to the substrate.

It is a side view which shows the coating device which concerns on 1st Embodiment. It is a side view which shows the principal part of the coating device of FIG. It is a side view which shows the application part of the coating device of FIG. It is a side view which shows the application part of the coating device which concerns on the modification of 1st Embodiment. It is a side view which shows the application part of the coating device which concerns on 2nd Embodiment. It is a side view which shows the application part of the coating device which concerns on the modification of 2nd Embodiment.

  Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. The sizes and ratios of the members in the drawings are exaggerated for convenience of explanation and may be different from the actual sizes and ratios. In all of FIGS. 1 to 6, the azimuth is indicated by using arrows represented by X, Y, and Z. The direction of the arrow represented by X indicates the transport direction X of the base material 10 immediately after being unloaded from the application unit 120. The direction of the arrow represented by Y indicates the width direction Y of the substrate 10 intersecting with the transport direction X. The direction of the arrow represented by Z indicates the height direction Z that intersects the transport direction X and the width direction Y.

(First embodiment)
The coating apparatus 100 is formed between the base material 10 and the doctor blade 122 while sandwiching the base material 10 between a blade (doctor blade 122) formed in an arc shape and having an elastic force and a biasing member (biasing roller 123). The coating material 20 supplied to is applied to the base material 10 while being stretched so as to have a constant film thickness, and then the coating material 20 is dried.

  First, the coating apparatus 100 which concerns on 1st Embodiment is demonstrated, referring FIGS. 1-3.

  FIG. 1 is a side view showing a coating apparatus 100 according to the first embodiment. In FIG. 1, most of the coating part 120 of the coating apparatus 100 is shown by a cross section. FIG. 2 is a side view showing a main part of the coating apparatus 100 of FIG. In FIG. 2, the support member 127 of the application part 120 is shown by a cross section. FIG. 3 is a side view showing the coating unit 120 of the coating apparatus 100 of FIG. In FIG. 3, most of the application part 120 is shown by a cross section.

  The coating apparatus 100 includes a transport unit 110 that transports the base material 10, an application unit 120 that applies the paint 20 to the base material 10, a measurement unit 130 that measures the layer thickness of the paint 20 applied to the base material 10, and the base material 10. A drying unit 140 that dries the coating material 20 applied to the substrate, and a control unit 150 that controls each component. Hereinafter, the configuration of the coating apparatus 100 will be described in order.

  The transport unit 110 is shown in FIG. The conveyance unit 110 includes a supply roller 111 (conveyance member), a guide roller 112 (conveyance member), and a winding roller 113 (conveyance member).

  The supply roller 111 corresponds to a conveying member. The supply roller 111 has a rotatable cylindrical shape. The supply roller 111 winds and holds the base material 10 before the coating material 20 is applied in a roll shape. The supply roller 111 is driven and rotated by a take-up roller 113 to be described later, thereby carrying out the substrate 10 to the application unit 120 while pulling out the substrate 10. The guide roller 112 corresponds to a conveying member. The guide roller 112 has a rotatable cylindrical shape. The guide roller 112 guides the base material 10 unloaded from the coating unit 120 and coated with the paint 20 so as to face the measurement unit 130 and the drying unit 140, and then guides the base material 10 to the winding roller 113. The winding roller 113 corresponds to a conveying member. The winding roller 113 has a rotatable cylindrical shape. The winding roller 113 winds and stores the base material 10 coated with the paint 20. The winding roller 113 is driven to rotate at a constant speed by a motor.

  The application unit 120 is shown in FIGS. 1 to 3 and is disposed to face the conveyance unit 110. The application unit 120 includes a supply member (supply die 121), a blade (doctor blade 122), a biasing member (biasing roller 123), a pressing member (pressing base 124), a drive stage 125, a mounting bolt 126, and a support member 127. It has.

  The supply die 121 corresponds to a supply member. The supply die 121 supplies the paint 20 to the doctor blade 122. The supply die 121 is provided upstream of the doctor blade 122 and the urging roller 123 in the transport direction X of the base material 10, adjacent to the doctor blade 122, and above the base material 10. The supply die 121 supplies a predetermined amount of the paint 20 to the doctor blade 122 by dropping the stored paint 20 in accordance with the transport speed of the substrate 10.

  The doctor blade 122 corresponds to a blade. The doctor blade 122 contacts the base material 10 via the paint 20 and applies the paint 20 to the base material 10. The doctor blade 122 faces the urging roller 123 and is disposed above the urging roller 123. The doctor blade 122 is formed in a cylindrical shape with a reduced thickness and has an elastic force. The doctor blade 122 may be formed in an arc shape so that at least a portion facing the urging roller 123 protrudes toward the urging roller 123.

  The doctor blade 122 holds the base material 10 together with the urging roller 123. That is, the doctor blade 122 presses the base material 10 uniformly by elastically deforming itself. Therefore, the doctor blade 122 can uniformly apply the paint 20 to the substrate 10.

  The paint 20 pressed by the doctor blade 122 and the urging roller 123 is maintained at a constant pressure. The layer thickness of the coating material 20 applied to the substrate 10 is determined by the viscosity of the coating material 20 in addition to the pressing force between the doctor blade 122 and the urging roller 123. Since the doctor blade 122 has an elastic force, even the resinous coating liquid having a particularly low viscosity can be uniformly applied to the substrate 10. Furthermore, since the doctor blade 122 is flexibly deformed in accordance with a member that is in contact with the paint 20, temporarily, dust adheres to the base material 10 or is dried before being applied to the base material 10. Even if the paint 20 is supplied, streaky coating spots caused by them can be prevented. Further, since the doctor blade 122 is formed in an arc shape, the pressure variation on the base material 10 can be sufficiently suppressed by being flexibly deformed according to the base material 10.

  For example, the doctor blade 122 has a diameter of 10 mm to 100 mm and a thickness of 0.1 mm to 0.5 mm. The doctor blade 122 is made of metal, for example. The doctor blade 122 can easily obtain an arbitrary elastic force by using a metal, and has solvent resistance and friction resistance. The doctor blade 122 is particularly made of a nickel alloy. By using a nickel alloy, the doctor blade 122 has appropriate spring rigidity and can be formed with a uniform thickness. The doctor blade 122 may increase the hardness by plating chrome on the surface, or improve the peelability of the paint 20 by applying Teflon (registered trademark) on the surface. The doctor blade 122 may improve surface roughness, cylindricity, roundness, and the like by polishing the surface after performing surface treatment.

  The urging roller 123 corresponds to an urging member. The urging roller 123 urges the base material 10 toward the doctor blade 122. The urging roller 123 faces the doctor blade 122 and is disposed below the doctor blade 122. The biasing roller 123 has a rotatable cylindrical shape. The urging roller 123 rotates following the substrate 10 conveyed by the conveyance unit 110. The urging roller 123 holds the substrate 10 together with the doctor blade 122. The urging roller 123 extends along the height direction Z in order to increase or decrease the urging force of the urging roller 123 against the base material 10 based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131 of the measuring unit 130. A drive mechanism that drives the motor may be provided. Such a drive mechanism drives the urging roller 123 up and down along the height direction Z, for example, while rotatably supporting the shaft of the urging roller 123.

  The pressing table 124 corresponds to a pressing member. The pressing table 124 presses the doctor blade 122 from the portion in contact with the base material 10 through the paint, on the upstream side in the transport direction X of the base material 10 and toward the biasing roller 123. The pressing table 124 is disposed above the doctor blade 122. The pressing stand 124 has a bifurcated lower portion. The pressing table 124 has a cylindrical doctor blade 122 in contact with the lower part thereof.

  The driving stage 125 moves the pressing table 124 in the height direction Z in order to increase or decrease the contact force of the doctor blade 122 against the base material 10 based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131 of the measuring unit 130. Drive up and down along. The drive stage 125 is composed of, for example, a uniaxial rectilinear stage. The drive stage 125 fixes the pressing table 124. When the pressing stage 124 is lowered by the drive stage 125, the contact force of the doctor blade 122 with respect to the base material 10 increases, and the layer thickness of the paint 20 becomes thin. On the other hand, when the pressing stage 124 is raised by the drive stage 125, the contact force of the doctor blade 122 with respect to the base material 10 decreases, and the layer thickness of the paint 20 increases.

  The attachment bolt 126 fixes the doctor blade 122 and the support member 127 to the pressing table 124. The pair of mounting bolts 126 are inserted through the through holes opened on both sides of the pressing base 124, then inserted into the doctor blade 122 and screwed to the support member 127. The mounting bolt 126 is fixed by the pressing table 124 and the support member 127 so as to sandwich the doctor blade 122.

  The support member 127 supports the doctor blade 122. The support member 127 is disposed on the inner peripheral surface 122 a side of the doctor blade 122 and in a portion separated from the urging roller 123 of the doctor blade 122. The support member 127 has a cylindrical shape extending in the width direction Y of the base material 10 and is formed by notching the lower part. The support member 127 receives the urging force received from the urging roller 123 via the base material 10 by supporting the doctor blade 122 while maintaining the elastic force of the doctor blade 122. The support member 127 can arbitrarily adjust the elastic force of the doctor blade 122 by the notch amount of the lower part. The support member 127 can relatively increase the elastic force of the doctor blade 122 as the lower notch amount is increased. The support member 127 may be configured to have an elastic force. If the support member 127 having an elastic force is used, the doctor blade 122 can easily elastically deform the portion supported by the support member 127 in addition to the portion in contact with the base material 10 via the paint 20.

  As shown in FIG. 1, the measurement unit 130 is disposed above the conveyance unit 110 and downstream of the application unit 120 in the conveyance direction X. The measurement unit 130 includes a measurement member (film thickness measuring device 131).

  The film thickness measuring device 131 corresponds to a measurement member. The film thickness measuring device 131 measures the layer thickness of the paint 20 applied to the substrate 10. The film thickness measuring device 131 is provided so as to face the substrate 10 between the urging roller 123 and the dryer 141, for example. The film thickness measuring device 131 is configured by a spectroscopic method, for example. That is, the film thickness measuring device 131 irradiates the coating material 20 applied to the substrate 10 with light and measures the reflected light. The film thickness measuring device 131 calculates the film thickness of the paint 20 from the information included in the measured reflected light.

  As shown in FIG. 1, the drying unit 140 is disposed above the transport unit 110 and downstream of the measurement unit 130 in the transport direction X. The drying unit 140 includes a drying member (dryer 141).

  The dryer 141 corresponds to a drying member. The dryer 141 dries the paint 20 applied to the substrate 10. The dryer 141 includes, for example, thermocouples, infrared lamps, and the like at regular intervals so as to face the substrate 10 between the film thickness measuring device 131 and the winding roller 113. The dryer 141 evaporates a volatile medium from the coating material 20 applied to the base material 10 by heat radiated from a thermocouple, an infrared lamp, or the like, and fixes the coating material 20 to the base material 10.

  The control unit 150 is shown in FIG. The control unit 150 includes a control member (controller 151).

  The controller 151 corresponds to a control member. The controller 151 controls each constituent member of the coating apparatus 100. The controller 151 includes a ROM, a CPU, and a RAM. A ROM (Read Only Memory) stores a control program related to the coating apparatus 100. The control program controls the winding roller 113 of the transport unit 110, the supply die 121 and the doctor blade 122 and the urging roller 123 of the coating unit 120, the film thickness measuring device 131 of the measuring unit 130, and the dryer 141 of the drying unit 140. Includes things about. In particular, the control program increases or decreases the contact force of the doctor blade 122 against the base material 10 and the biasing force of the biasing roller 123 against the base material 10 based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131. The thickness is controlled to be constant. A CPU (Central Processing Unit) controls the operation of each component of the coating apparatus 100 based on a control program. A RAM (Random Access Memory) temporarily stores various data related to each component of the coating apparatus 100 under control.

  Next, operation | movement of the coating device 100 which concerns on 1st Embodiment is demonstrated, referring FIGS. 1-3.

  First, the take-up roller 113 of the transport unit 110 is rotated to carry out the long base material from the supply roller 111 to the coating unit 120. Next, the application unit 120 applies the paint 20 supplied from the supply die 121 to the base material 10 while thinly stretching the base material 10 with the doctor blade 122 and the urging roller 123 having elastic force. The base material 10 is unloaded from between the doctor blade 122 and the urging roller 123 in a state where the paint 20 is applied. Here, the doctor blade 122 presses the base material 10 uniformly by elastically deforming itself. That is, for example, the accuracy of the outer shape of the doctor blade 122 or the urging roller 123 is not sufficient, the outer shape changes due to wear of the doctor blade 122 or the urging roller 123, or the layer thickness of the base material 10 Even if an error occurs, the doctor blade 122 elastically deforms itself, so that the distance between the doctor blade and the base material 10 can always be adjusted uniformly. Therefore, the doctor blade 122 can uniformly apply the paint 20 to the substrate 10.

  Next, the film thickness measuring device 131 of the measurement unit 130 measures the layer thickness of the coating material 20 applied to the base material 10. Here, the control unit 150 controls the drive stage 125 based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131, and increases or decreases the contact force of the doctor blade 122 with respect to the base material 10. The layer thickness is controlled to be constant. For example, when the layer thickness of the paint 20 is thicker than the target value, the pressing stage 124 is lowered by the drive stage 125 to increase the contact force of the doctor blade 122 against the substrate 10. On the other hand, when the layer thickness of the paint 20 is thinner than the target value, the pressing stage 124 is raised by the drive stage 125 to reduce the contact force of the doctor blade 122 with respect to the base material 10. Next, the dryer 141 of the drying unit 140 dries the coating material 20 applied to the base material 10 while the base material 10 is being transported. Finally, the winding roller 113 of the transport unit 110 winds and stores the base material 10 to which the paint 20 is fixed.

  According to the coating apparatus 100 which concerns on 1st Embodiment mentioned above, there exists an effect by the following structures.

  The coating apparatus 100 includes a blade (doctor blade 122) and a biasing member (biasing roller 123). The doctor blade 122 contacts the base material 10 via the paint 20 and applies the paint 20 to the base material 10. The urging roller 123 is disposed to face the doctor blade 122 and urges the base material 10 toward the doctor blade 122. Here, in the doctor blade 122, at least a portion facing the urging roller 123 protrudes toward the urging roller 123 and is formed in an arc shape and has an elastic force.

  According to such a structure, the base material 10 is clamped by the doctor blade 122 and the urging roller 123 that are formed in an arc shape and have elastic force. That is, the doctor blade 122 presses the base material 10 uniformly by elastically deforming itself. Therefore, the coating apparatus 100 can uniformly apply the coating material 20 to the base material 10.

  Furthermore, a pressing member (pressing table 124) that relatively adjusts the pressing force between the doctor blade 122 and the urging roller 123 is provided.

  According to such a configuration, when the pressing force of the doctor blade 122 with respect to the urging roller 123 is adjusted to be relatively increased by the pressing table 124, the contact force of the doctor blade 122 with respect to the base material 10 increases. The layer thickness of the paint 20 can be made relatively thin. On the other hand, when the pressing table 124 is adjusted so that the pressing force of the doctor blade 122 against the urging roller 123 is relatively reduced, the contact force of the doctor blade 122 with respect to the base material 10 is reduced. It can be made relatively thick. That is, the thickness of the coating material 20 applied to the base material 10 can be defined by the pressing table 124. You may adjust so that the pressing force of the urging | biasing roller with respect to the doctor blade 122 may be increased / decreased relatively with a press member.

  Further, the pressing table 124 presses the doctor blade 122 from the portion in contact with the base material 10 through the paint to the upstream side in the transport direction X of the base material 10.

  According to such a configuration, the doctor blade 122 can be pressed so as to face the paint 20 supplied from the upstream side in the transport direction X of the base material 10. Therefore, even if the viscosity of the paint 20 is relatively high or more paint 20 is supplied, the doctor blade 122 is sufficiently stretched while facing the paint 20 to form a uniform layer thickness. be able to.

  Furthermore, the doctor blade 122 is formed in a cylindrical shape.

  According to such a configuration, the doctor blade 122 elastically deforms the entire portion of the doctor blade 122 that is in contact with the base material 10 via the paint 20 by being deformed flexibly. That is, the doctor blade 122 can sufficiently follow a minute change in the shape of the base material 10 or the doctor blade 122, for example, and can easily press the base material 10 with high accuracy by being easily elastically deformed. .

  Furthermore, a support member 127 that supports the doctor blade 122 is provided at least in a portion of the doctor blade 122 that is spaced from the urging roller 123.

  According to such a configuration, the urging force received from the urging roller 123 via the substrate 10 is sufficiently received by sufficiently supporting the doctor blade 122 while maintaining the elastic force of the doctor blade 122. Can do.

  Further, the support member 127 is disposed on the inner peripheral surface 122 a side of the doctor blade 122.

  According to such a configuration, the support member 127 can sufficiently prevent interference with the constituent members around the doctor blade 122 (for example, the urging roller 123). Furthermore, the support member 127 can secure a sufficient area for supporting the doctor blade 122.

  Further, the support member 127 has an elastic force.

  According to such a configuration, the doctor blade 122 easily elastically deforms the portion supported by the support member 127 in addition to the portion in contact with the base material 10 via the paint 20. That is, for example, by sufficiently following a large change in the shape of the base material 10 and flexibly elastically deforming, the base material 10 can be pressed uniformly with high accuracy.

  Further, the doctor blade 122 is made of metal.

  According to such a configuration, the doctor blade 122 can easily obtain an arbitrary elastic force while maintaining a sufficient strength. In addition, the doctor blade 122 can have solvent resistance and friction resistance.

  Further, a supply member (supply die 121) for supplying the paint 20 to the doctor blade 122 is provided.

  According to such a configuration, the coating material 20 can be easily supplied to the doctor blade 122 by the supply die 121.

  Furthermore, a transport member (winding roller 113 or the like) that transports the base material 10 along the transport direction X is provided.

  According to such a configuration, the substrate 10 is easily carried between the doctor blade 122 and the urging roller 123 by the take-up roller 113 or the like, and the substrate 10 to which the coating material 20 is applied is transferred to the doctor blade 122. And the urging roller 123 can be easily carried out.

  Furthermore, a measuring member (film thickness measuring device 131) for measuring the layer thickness of the paint 20 applied to the base material 10 is provided. Further, based on the measurement result of the layer thickness by the film thickness measuring device 131, the layer is obtained by increasing / decreasing at least one of the contact force of the doctor blade 122 against the base material 10 and the biasing force of the biasing roller 123 against the base material 10. A control member (controller 151) that controls the thickness to be constant is provided.

  According to such a configuration, the clamping force of the substrate 10 by the doctor blade 122 and the urging roller 123 is corrected based on the layer thickness of the coating material 20 actually applied to the substrate 10, and the layer thickness of the coating material 20 is corrected. Can be made constant. Therefore, the coating material 20 can be uniformly applied to the substrate 10 while being regulated to an arbitrary layer thickness. For example, when the layer thickness of the coating material 20 is thicker than the target value, the contact force of the doctor blade 122 with respect to the base material 10 is increased to make the layer thickness relatively thin. On the other hand, when the layer thickness of the coating material 20 is thinner than the target value, the contact force of the doctor blade 122 with respect to the base material 10 is decreased to relatively increase the layer thickness.

  Furthermore, the drying member (dryer 141) which dries the coating material 20 apply | coated to the base material 10 is provided.

  According to such a configuration, the paint 20 applied to the base material 10 can be easily dried.

(Modification of the first embodiment)
In the coating apparatus according to the modification of the first embodiment, the configuration including the adjustment bolt 228 and the drive stage 229 that press the doctor blade 222 from a location closer to the base material 10 is related to the first embodiment described above. Different from the configuration of the coating apparatus 100. In the modified example of the first embodiment, the above description is omitted for those having the same configuration as that of the first embodiment.

  A coating unit 220 of a coating apparatus according to a modification of the first embodiment will be described with reference to FIG.

  FIG. 4 is a side view showing the coating unit 220 of the coating apparatus according to the modification of the first embodiment. In FIG. 4, most of the application part 220 is shown by a cross section.

  The application unit 220 is disposed to face the conveyance unit 110. In addition to the supply die 121, the urging roller 123, and the driving stage 125 described above, the coating unit 220 includes a blade (doctor blade 222), a pressing base 224, a mounting bolt 226, a support member 227, A pressing member (adjustment bolt 228) is provided.

  The doctor blade 222 corresponds to a blade. The doctor blade 222 contacts the base material 10 via the paint 20 and applies the paint 20 to the base material 10. The doctor blade 222 faces the urging roller 123 and is disposed above the urging roller 123. The doctor blade 222 is formed in a cylindrical shape with a thin layer thickness and has an elastic force. Here, in the doctor blade 222, the adjustment bolt 228 is inserted from the outer peripheral surface 222b, and the tip of the adjustment bolt 228 is in contact with the inner peripheral surface 222a. The doctor blade 222 pressed by the adjusting bolt 228 holds the base material 10 together with the urging roller 123.

  The pressing table 224 corresponds to a pressing member. The pressing table 224 presses the doctor blade 222 toward the urging roller 123 on the upstream side in the transport direction X of the base material 10. The pressing table 224 is disposed above the doctor blade 222. The lower part of the pressing table 224 is curved inward according to the outer shape of the doctor blade 222. The pressing table 224 has a cylindrical doctor blade 222 in contact with the lower part thereof. The pressing table 224 is fixed to the drive stage 125.

  The mounting bolt 226 fixes the doctor blade 222 and the support member 227 to the pressing table 224. The mounting bolt 226 is inserted into the through hole opened in the curved portion of the pressing table 224, and then inserted into the doctor blade 222 and screwed to the support member 227. The mounting bolt 226 is fixed by the pressing base 224 and the support member 227 so as to sandwich the doctor blade 222.

  The support member 227 supports the doctor blade 222. The support member 227 is disposed on the inner peripheral surface 222 a side of the doctor blade 222 and at an upper part of the doctor blade 222 that is separated from the urging roller 123. The support member 227 has a cylindrical shape extending in the width direction Y of the base material 10. The support member 227 receives the urging force received from the urging roller 123 via the base material 10 by supporting the upper portion of the doctor blade 222 while maintaining the elastic force of the doctor blade 222.

  The adjustment bolt 228 presses the doctor blade 222 toward the urging roller 123 on the upstream side in the transport direction X of the base material 10. The adjustment bolt 228 is inserted through the opening of the curved portion of the pressing table 224. The adjustment bolt 228 passes through the center 222c of the doctor blade 222 and is in contact with the inner peripheral surface 222a of the doctor blade 222 while inserting the doctor blade 222 from the outer peripheral surface 222b. The adjustment bolt 228 also passes through the support member 227 provided on the inner peripheral surface 222 a side of the doctor blade 222. The adjustment bolts 228 are provided along the width direction Y of the base material 10 at, for example, 20 mm intervals.

  The adjustment bolt 228 uses the doctor blade 222 as a reference based on the position of the outer peripheral surface 222b of the doctor blade 222 through which the adjustment bolt 228 is inserted and the position of the inner peripheral surface 222a of the doctor blade 222 to which the adjustment bolt 228 is in contact. Elastically deform into any shape. That is, the adjustment bolt 228 arbitrarily defines the pressure value, direction, and the like at which the doctor blade 222 presses the substrate 10. The adjustment bolt 228 is arranged along the height direction Z in order to increase or decrease the pressing force on the inner peripheral surface 222a of the doctor blade 222 based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131 of the measuring unit 130. A drive mechanism for driving is provided.

  Based on the measurement result of the layer thickness of the paint 20 by the film thickness measuring device 131 of the measuring unit 130, the drive stage 229 is applied to the doctor blade 222 by the adjustment bolt 228 in order to increase or decrease the contact force of the doctor blade 222 against the base material 10. Move slightly. The drive stage 229 is composed of, for example, a uniaxial rectilinear stage. The drive stage 229 fixes the base side of the adjustment bolt 228. When the adjustment bolt 228 is slightly moved toward the doctor blade 222 by the drive stage 229, the contact force of the doctor blade 222 with respect to the substrate 10 increases, and the layer thickness of the paint 20 becomes thin. On the other hand, when the adjustment bolt 228 is slightly moved in the direction of retreating from the doctor blade 222 by the drive stage 229, the contact force of the doctor blade 222 with respect to the base material 10 is reduced, and the layer thickness of the paint 20 is increased.

  According to the coating apparatus which concerns on the modification of 1st Embodiment mentioned above, in addition to the effect of the coating device 100 which concerns on 1st Embodiment, there exists an effect by the following structures.

  The coating device includes a pressing member (adjustment bolt 228) that presses the blade (doctor blade 222) toward the biasing member (biasing roller 123). The coating device may include a pressing member that presses the urging roller 123 toward the doctor blade 222.

  According to such a configuration, the substrate 10 is sufficiently pressed by pressing the substrate 10 with the adjusting bolt 228 from the doctor blade 222 side while urging the substrate 10 from the urging roller 123 side. Can be pinched. That is, when the doctor blade 222 is pressed from the adjusting bolt 228, for example, the doctor blade 222 sufficiently follows a minute change in the shape of the substrate 10 or the doctor blade 222 itself, and elastically deforms itself by itself, whereby the substrate 10 can be pressed more uniformly. Therefore, the coating apparatus can uniformly apply the coating material 20 to the base material 10.

  According to such a configuration, when the adjustment bolt 228 is adjusted so that the pressing force of the doctor blade 222 relative to the urging roller 123 is relatively increased, the contact force of the doctor blade 222 with respect to the base material 10 increases. The layer thickness of the paint 20 can be made relatively thin. On the other hand, when the adjustment bolt 228 is adjusted so that the pressing force of the doctor blade 222 against the urging roller 123 is relatively reduced, the contact force of the doctor blade 222 with respect to the base material 10 is reduced. It can be made relatively thick. That is, the layer thickness of the coating material 20 applied to the substrate 10 can be defined by the adjustment bolt 228.

  Further, the adjustment bolt 228 is in contact with the inner peripheral surface 222 a of the doctor blade 222 and presses the urging roller 123.

  According to such a configuration, the base material 10 is directly pressed from the side of the inner peripheral surface 222 a corresponding to the back surface of the doctor blade 222 that is in contact with the base material 10 via the paint 20 by the adjusting bolt 228. Can do. Therefore, the base material 10 can be effectively pressed from the doctor blade 222 side by the adjusting bolt 228 while the base material 10 is urged from the urging roller 123 side. That is, the adjustment bolt 228 can easily adjust the pressure and direction in which the base blade 10 is pressed by the doctor blade 222. Therefore, when the doctor blade 222 is pressed from the adjustment bolt 228, it is possible to define a pressure value, a direction, and the like at which the doctor blade 222 presses the substrate 10.

  Further, the adjustment bolt 228 is in contact with the inner peripheral surface 222a while inserting the doctor blade 222 from the outer peripheral surface 222b.

  According to such a configuration, the doctor blade is based on the position of the outer peripheral surface 222b of the doctor blade 222 into which the adjustment bolt 228 is inserted and the position of the inner peripheral surface 222a of the doctor blade 222 with which the adjustment bolt 228 is in contact. It is easy to elastically deform 222 into an arbitrary shape. That is, the adjustment bolt 228 can easily define the pressure value, direction, and the like at which the doctor blade 222 presses the substrate 10.

  Further, a plurality of adjustment bolts 228 are provided along the width direction Y intersecting the conveyance direction X of the base material 10.

  According to such a configuration, for example, when the shapes of the base material 10 and the doctor blade 222 themselves are different along the width direction Y, the pressing force of the doctor blade 222 against the base material 10 changes along the width direction Y. Can be easily handled by adjusting the pressing force of each adjusting bolt 228 when it is necessary to change the layer thickness of the coating material 20 applied to the substrate 10 along the width direction Y. can do.

  Furthermore, a measuring member (film thickness measuring device 131) for measuring the layer thickness of the paint 20 applied to the base material 10 is provided. Further, a control member (controller 151) that controls the layer thickness to be constant by increasing or decreasing the contact force of the doctor blade 222 via the adjustment bolt 228 to the base material 10 based on the measurement result of the layer thickness by the film thickness measuring device 131. I have.

  According to such a configuration, the clamping force of the substrate 10 by the doctor blade 222 and the urging roller 123 pressed by the adjusting bolt 228 is corrected based on the layer thickness of the paint 20 actually applied to the substrate 10. The layer thickness can be made constant. Therefore, the coating material 20 can be uniformly applied to the substrate 10 while being regulated to an arbitrary layer thickness.

(Second Embodiment)
The coating apparatus according to the second embodiment is divided along the width direction Y of the base material 10, and the configuration including the doctor blade 322 configured to be more easily deformed is the configuration of the coating apparatus 100 according to the first embodiment described above. Different from the configuration. In the second embodiment, the description described above is omitted for the configuration having the same configuration as that of the first embodiment.

  A coating unit 320 of the coating apparatus according to the second embodiment will be described with reference to FIG.

  FIG. 5 is a side view showing the coating unit 320 of the coating apparatus according to the second embodiment. In FIG. 5, most of the application part 320 is shown by a cross section.

  The application unit 320 is disposed to face the conveyance unit 110. The application unit 320 includes a blade (doctor blade 322) and a support member 327 unique to the application unit 320 in addition to the supply die 121, the urging roller 123, the pressing base 124, the drive stage 125, and the mounting bolt 126 described above. ing.

  The doctor blade 322 corresponds to a blade. The doctor blade 322 contacts the base material 10 via the paint 20 and applies the paint 20 to the base material 10. The doctor blade 322 faces the urging roller 123 and is disposed above the urging roller 123. The doctor blade 322 is formed in a cylindrical shape with a thin layer thickness and has an elastic force. Here, the doctor blade 322 extends along the width direction Y intersecting the transport direction X of the base material 10 on the downstream side of the transport direction X of the base material 10 from the portion in contact with the base material 10 via the paint 20. It is divided. The doctor blade 322 having an elastic force holds the base material 10 together with the urging roller 123. The doctor blade 322 cuts off the adhesion of the coating material 20 to the base material 10 by the divided portion, and the coating material 20 can be cut very well, thereby preventing streaky coating spots.

  The support member 327 supports the doctor blade 322. The support member 327 is disposed on the inner peripheral surface 322 a side of the doctor blade 322 and in a portion separated from the urging roller 123 of the doctor blade 322. The support member 327 has a cylindrical shape extending in the width direction Y of the base material 10, and is formed by cutting out the lower part corresponding to the shape of the doctor blade 322. The support member 327 receives the urging force received from the urging roller 123 via the base material 10 by supporting the doctor blade 322 while maintaining the elastic force of the doctor blade 322.

  According to the coating apparatus which concerns on 2nd Embodiment mentioned above, in addition to the effect of the coating device 100 which concerns on 1st Embodiment, there exists an effect by the following structures.

  The coating device includes a blade (doctor blade 322) formed in a cylindrical shape. The doctor blade 322 is divided along the width direction Y that intersects the transport direction X of the base material 10 on the downstream side of the transport direction X of the base material 10 from the portion in contact with the base material 10 via the paint 20. .

  According to such a configuration, the doctor blade 322 can be easily bent based on the divided portion while being deformed flexibly. That is, the doctor blade 322 effectively follows, for example, minute changes in the shape of the base material 10 and the doctor blade 322 itself, and easily elastically deforms, thereby pressing the base material 10 with high accuracy and uniformity. be able to. Therefore, the coating apparatus can uniformly apply the coating material 20 to the base material 10.

  Further, according to such a configuration, the doctor blade 322 can prevent the coating material 20 from being attached to the base material 10 by the divided portions, and prevent application failure to the base material 10. That is, the doctor blade 322 has a divided portion, so that the so-called liquid breakage of the paint 20 is improved. The defective application is, for example, streaky smear caused by the adhesion of the coating material 20 to the base material 10, and occurs on the downstream side along the transport direction X of the base material 10. Therefore, the coating device can uniformly apply the coating material 20 to the base material 10 without causing poor coating.

(Modification of the second embodiment)
The coating apparatus according to the modified example of the second embodiment includes the doctor blade 422 divided along the width direction Y of the base material 10 as in the second embodiment, and is similar to the modified example of the first embodiment. The configuration provided with the adjustment bolt 228 for pressing the doctor blade 422 is different from the configuration of the coating apparatus according to the second embodiment described above. In the modified example of the second embodiment, the above description is omitted for those having the same configuration as that of the first or second embodiment.

  A coating unit 420 of a coating apparatus according to a modification of the second embodiment will be described with reference to FIG.

  FIG. 6 is a side view showing a coating unit 420 of a coating apparatus according to a modification of the second embodiment. In FIG. 6, most of the application part 420 is shown by a cross section.

  The application unit 420 is disposed to face the conveyance unit 110. The application unit 420 includes a blade (doctor blade) unique to the application unit 420 in addition to the supply die 121, the urging roller 123, the pressing base 224, the drive stage 125, the mounting bolt 226, the support member 227, and the adjustment bolt 228 described above. 422).

  The doctor blade 422 corresponds to a blade. The doctor blade 422 contacts the base material 10 via the paint 20 and applies the paint 20 to the base material 10. The doctor blade 422 faces the urging roller 123 and is disposed above the urging roller 123. The doctor blade 422 is formed in a cylindrical shape with a thin layer thickness and has an elastic force. Here, the doctor blade 422 is divided along the width direction Y intersecting the transport direction X of the base material 10 on the downstream side of the transport direction X of the base material 10. The doctor blade 422 having an elastic force holds the base material 10 together with the urging roller 123. Further, in the doctor blade 422, the adjustment bolt 228 is inserted from the outer peripheral surface 422b, and the tip of the adjustment bolt 228 is in contact with the inner peripheral surface 422a. The doctor blade 422 pressed by the adjustment bolt 228 holds the base material 10 together with the urging roller 123.

  According to the coating device which concerns on the modification of 2nd Embodiment mentioned above, in addition to the effect of the coating device which concerns on 2nd Embodiment, there exists an effect by the following structures.

  The coating device includes a blade (doctor blade 422) formed in a cylindrical shape. The doctor blade 422 is divided along the width direction Y intersecting the transport direction X of the base material 10 on the downstream side of the transport direction X of the base material 10. Further, the coating device includes an adjustment bolt 228 that presses the doctor blade 422 toward the biasing roller 123.

  According to such a configuration, the doctor blade 422 is easily bent based on the divided portion while being deformed flexibly. Furthermore, the substrate 10 can be sufficiently clamped by pressing the substrate 10 with the adjusting bolt 228 from the doctor blade 422 side while urging the substrate 10 from the urging roller 123 side. That is, the adjusting bolt 228 can easily adjust the pressure and direction in which the base member 10 is pressed by the doctor blade 422. Accordingly, when the doctor blade 422 is pressed from the adjustment bolt 228, the pressure value, direction, and the like at which the doctor blade 422 presses the base material 10 can be defined. Thus, the doctor blade 422 effectively follows, for example, a minute change in the shape of the base material 10 or the doctor blade 422 itself, and easily elastically deforms, thereby making the base material 10 very uniform with high accuracy. Can be pressed. Therefore, the coating apparatus can uniformly apply the coating material 20 to the base material 10.

  In addition, the present invention can be variously modified based on the configurations described in the claims, and these are also within the scope of the present invention.

  The doctor blade provided in the coating apparatus of the present invention can be incorporated into a coating / drying apparatus or a laminating apparatus. In addition, the doctor blade provided in the coating apparatus can be applied to a floating gravure doctor used in a gravure printing machine and a smoothing doctor that smoothes the layer thickness of the paint 20. Furthermore, the doctor blade provided in the coating apparatus can be incorporated in a so-called surface treatment apparatus. For example, a doctor blade provided in a coating apparatus can be incorporated into a hot melt coater.

10 base material,
20 paint,
100 coating device,
110 transport section,
111 Supply roller (conveying member),
112 guide rollers (conveying members),
113 winding roller (conveying member),
120, 220, 320, 420 application part,
121 supply die (supply member),
122, 222, 322, 422 Doctor blade (blade),
122a, 222a, 322a, 422a inner peripheral surface,
222b, 422b outer peripheral surface,
122c, 222c, 322c, 422c center,
123 urging roller (urging member),
124, 224 pressing table (pressing member),
125,229 drive stage,
126, 226 mounting bolts,
127, 227, 327 support member,
228 adjustment bolt (pressing member),
130 measuring section,
131 Film thickness measuring device (measuring member),
140 drying section,
141 dryer (drying member),
150 control unit,
151 controller (control member),
X (in the substrate 10) transport direction,
Y (base material 10) width direction,
Z Height direction.

Claims (14)

A blade that contacts the substrate through the paint, and applies the paint to the substrate;
An urging member disposed opposite to the blade and urging the substrate toward the blade;
A pressing member that relatively adjusts the pressing force between the blade and the biasing member;
Have
The blade has at least a portion facing the urging member and protrudes toward the urging member and is formed in an arc shape, and has an elastic force .
The application device , wherein the pressing member presses the urging member by contacting the inner peripheral surface of the blade while inserting the blade from the outer peripheral surface . The pressing member, coating apparatus according to claim 1 for pressing on the upstream side in the transport direction of the base material said blade from a portion in contact through the paint to the substrate. The pressing member, coating apparatus according to claim 1 or 2 provided a plurality along the width direction intersecting the transport direction of the substrate. The coating device according to claim 1 , wherein the blade is formed in a cylindrical shape . 5. The blade according to claim 4, wherein the blade is divided along a width direction intersecting with the transport direction of the base material on a downstream side in the transport direction of the base material from a portion in contact with the base material through the paint. The coating apparatus as described. At least disposed in spaced part from the biasing member, the coating apparatus according to the support member supporting the blade, to any one of claims 1-5, further comprising the blade. The coating apparatus according to claim 6 , wherein the support member is disposed on an inner peripheral surface side of the blade . The coating apparatus according to claim 6 , wherein the support member has an elastic force . The coating device according to claim 1 , wherein the blade is made of metal . Coating apparatus according to any one of claims 1 to 9, the supply member for supplying the coating material to said blade further comprises. Coating apparatus according to any one of claims 1 to 10 having a conveying member for conveying along the conveying direction of the substrate, further. A measuring member for measuring the layer thickness of the paint applied to the substrate;
Based on the measurement result of the layer thickness by the measuring member, the layer thickness is made constant by increasing or decreasing at least one of the abutting force of the blade against the substrate and the urging force of the urging member against the substrate. The coating apparatus of any one of Claims 1-11 which further has a control member to control to . The coating apparatus according to claim 1 , further comprising a drying member that dries the paint applied to the base material . The blade further includes a support member disposed at least in a portion away from the biasing member and supporting the blade,
The coating apparatus according to claim 5, wherein the support member is formed in a cross-sectional shape in which a cylindrical side surface is partially cut out, and a tip of the blade is disposed in the cutout portion of the cylindrical shape.