KR20220037420A - Gravure printing apparatus and method for manufacturing multilayer ceramic capacitor - Google Patents

Abstract

Provided is a gravure printing device which can improve printing precision even when the shape of a cut surface of a drum roll is not round. The gravure printing device (10) comprises: a first plate roll (1) in which a cell having a shape corresponding to a figure to be printed is formed on an outer circumferential surface; a drum roll (2); a first circumferential speed detection unit (3) detecting a circumferential speed of the drum roll (2) at a position in contact with the first plate roll (1) through an object to be printed; the circumferential speed of the drum roll (2) detected by the first circumferential speed detection unit (3); and a first angular speed adjusting unit (4) adjusting an angular speed of the first plate roll (1) so that the circumferential speed of the first plate roll (1) coincides.

Description

Gravure printing apparatus and manufacturing method of a multilayer ceramic capacitor TECHNICAL FIELD

The present invention relates to a gravure printing apparatus and a method for manufacturing a multilayer ceramic capacitor using the gravure printing apparatus.

BACKGROUND ART A gravure printing apparatus is known that performs printing by transferring the ink filled in the cells of the plate roll to the print object by sandwiching the print object between the plate roll and the drum roll.

As one of such gravure printing apparatuses, in Patent Document 1, in a state in which inks of different colors are stored in the cells of the plurality of plate rolls, each of the plurality of plate rolls is rotated and one drum roll is rotated, so that the object to be printed is A gravure printing apparatus for performing multicolor gravure printing is described. In this gravure printing apparatus, the rotation of the plate roll and the rotation of the drum roll are respectively controlled so that the peripheral speeds of the plate roll and the drum roll coincide.

Japanese Patent Laid-Open No. 2009-96189

Here, it is preferable that the shape of the cut surface when the drum roll is cut in a plane orthogonal to the rotation axis is round, but it may not be round depending on processing precision. In that case, since the peripheral speed is different depending on the position of the outer peripheral surface of the drum roll, the peripheral speed of the plate roll and the peripheral speed of the drum roll do not match at the position where the plate roll and the drum roll are in contact. occurs

The present invention solves the above problems, and provides a gravure printing apparatus capable of improving printing precision even when the shape of the cut surface of a drum roll is not round, and a method of manufacturing a multilayer ceramic capacitor using such a gravure printing apparatus intended to provide

The gravure printing apparatus of the present invention comprises:

A gravure printing apparatus for printing by sandwiching a printing object between a plate roll and a drum roll, and transferring the ink filled in cells formed on the outer circumferential surface of the plate roll to the printing object,

A first plate roll having the cell having a shape corresponding to a figure to be printed on an outer circumferential surface of which is formed;

the drum roll;

a first peripheral speed detection unit for detecting a peripheral speed of the drum roll at a position in contact with the first plate roll through the printing object;

and a first angular velocity adjusting part for adjusting the angular velocity of the first plate roll so that the peripheral speed of the drum roll detected by the first peripheral speed detecting part coincides with the peripheral speed of the first plate roll.

The gravure printing device,

a second plate roll having the cell having a shape corresponding to the figure to be printed on the outer circumferential surface of which is formed;

a second peripheral speed detection unit for detecting a peripheral speed of the drum roll at a position in contact with the second plate roll through the printing object;

You may further include a 2nd angular velocity adjusting part which adjusts the angular velocity of the said 2nd plate roll so that the peripheral speed of the said drum roll detected by the said 2nd peripheral speed detection part may coincide with the peripheral speed of the said 2nd plate roll.

The gravure printing device,

Further comprising a third peripheral speed detection unit for detecting the peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object,

The first angular velocity adjusting unit is configured such that a difference between the peripheral speed of the first plate roll detected by the third peripheral speed detection unit and the peripheral speed of the drum roll detected by the first peripheral speed detection unit becomes 0, the angular velocity of the first plate roll may be configured to adjust

The gravure printing device,

a third peripheral speed detecting unit for detecting a peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object;

Further comprising a fourth peripheral speed detection unit for detecting the peripheral speed of the second plate roll at a position in contact with the drum roll through the printing object,

The first angular speed adjusting unit adjusts the angular velocity of the first plate roll so that the difference between the peripheral speed of the first plate roll detected by the third peripheral speed detection unit and the peripheral speed of the drum roll detected by the first peripheral speed detection unit becomes 0 adjust,

The second angular velocity adjusting unit adjusts the angular velocity of the second plate roll so that the difference between the peripheral speed of the second plate roll detected by the fourth peripheral speed detection unit and the peripheral speed of the drum roll detected by the second peripheral speed detection unit becomes zero. It may be configured to adjust.

The gravure printing apparatus of the present invention comprises:

A gravure printing apparatus for printing by sandwiching a printing object between a plate roll and a drum roll, and transferring the ink filled in cells formed on the outer circumferential surface of the plate roll to the printing object,

A first plate roll having the cell having a shape corresponding to a figure to be printed on an outer circumferential surface of which is formed;

the drum roll;

a storage unit for storing circumferential speed data indicating a relationship between a rotational position of the drum roll and a circumferential speed of the drum roll;

a rotational position detection unit for detecting the rotational position of the drum roll;

Based on the rotational position of the drum roll detected by the rotational position detection unit and the peripheral speed data stored in the storage unit, the peripheral speed of the drum roll at a position in contact with the first plate roll via the print object and a first angular velocity adjusting unit for adjusting the angular velocity of the first plate roll so that the obtained peripheral speed of the drum roll coincides with the peripheral speed of the first plate roll.

The gravure printing device,

a second plate roll having the cell having a shape corresponding to the figure to be printed on the outer circumferential surface of which is formed;

Based on the rotational position of the drum roll detected by the rotational position detection unit and the peripheral speed data stored in the storage unit, the peripheral speed of the drum roll at a position in contact with the second plate roll via the print object and may further include a second angular velocity adjusting unit for adjusting the angular velocity of the second plate roll so that the obtained peripheral speed of the drum roll coincides with the peripheral speed of the second plate roll.

The gravure printing device,

Further comprising a third peripheral speed detection unit for detecting the peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object,

The first angular speed adjusting unit makes a difference between the peripheral speed of the first plate roll detected by the third peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the first plate roll through the print object to be 0; You may be comprised so that the angular velocity of the said 1st plate roll may be adjusted.

The gravure printing device,

a third peripheral speed detecting unit for detecting a peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object;

Further comprising a fourth peripheral speed detection unit for detecting the peripheral speed of the second plate roll at a position in contact with the drum roll through the printing object,

The first angular speed adjusting unit makes a difference between the peripheral speed of the first plate roll detected by the third peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the first plate roll through the print object to be 0; Adjusting the angular velocity of the first plate roll,

The second angular speed adjusting unit makes a difference between the peripheral speed of the second plate roll detected by the fourth peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the second plate roll through the print object to be 0; You may be comprised so that the angular velocity of the said 2nd plate roll may be adjusted.

An elastic member may be disposed on the outer peripheral surface of the drum roll at least on a portion in contact with the first plate roll through the print object.

The manufacturing method of the multilayer ceramic capacitor of the present invention comprises:

A step of forming an internal electrode pattern on a ceramic green sheet using the gravure printing apparatus described above;

manufacturing a laminate by laminating a plurality of the ceramic green sheets including the ceramic green sheets on which the internal electrode patterns are formed;

sintering the laminate;

and providing an external electrode to the laminate after firing.

According to the gravure printing apparatus of the present invention, the peripheral speed of the drum roll in contact with the first plate roll is detected, and the angular velocity of the first plate roll is adjusted so that the detected peripheral speed of the drum roll matches the peripheral speed of the first plate roll. Therefore, even when the shape of the cut surface of the drum roll is not round, the peripheral speed at the position where the first plate roll and the drum roll are in contact with each other can be made to match, and the printing precision can be improved.

In addition, according to the method for manufacturing a multilayer ceramic capacitor of the present invention, since the internal electrode pattern is formed on the ceramic green sheet using the above-described gravure printing apparatus, the internal electrode pattern can be formed at a desired position, and the desired multilayer ceramic capacitor can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the structure of the principal part of the gravure printing apparatus in 1st Embodiment.
Fig. 2 is a perspective view schematically showing the appearance of the first plate roll.
3 is a cross-sectional view of the drum roll.
4 is a view for explaining an example of a method of printing an object to be printed using a gravure printing apparatus.
5 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll when printing is performed by the gravure printing apparatus in the first embodiment.
6 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the second embodiment.
7, (a) is a diagram illustrating a state in which an internal electrode pattern is formed on a ceramic green sheet formed on a carrier film, and (b) is a diagram illustrating a state in which a ceramic paste pattern is formed around the internal electrode pattern. .
It is a flowchart for demonstrating the procedure of the angular velocity adjustment method of a 1st plate roll and a 2nd plate roll when printing by the gravure printing apparatus in 2nd Embodiment.
Fig. 9 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the third embodiment.
Fig. 10 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll when printing is performed by the gravure printing apparatus in the third embodiment.
11 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus in the fourth embodiment.
It is a flowchart for demonstrating the procedure of the angular velocity adjustment method of a 1st plate roll and a 2nd plate roll when printing by the gravure printing apparatus in 4th Embodiment.
Fig. 13 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the fifth embodiment.
Fig. 14 is a view showing the relationship between the rotational position of the drum roll and the peripheral speed of the drum roll at the peripheral speed measurement position, (b) is the rotational position of the drum roll and the first plate roll through the printing object. It is a figure which shows the relationship between the peripheral speed of a drum roll at the position in contact with.
It is a flowchart for demonstrating the procedure of the angular velocity adjustment method of a 1st plate roll when printing by the gravure printing apparatus in 5th Embodiment.
Fig. 16 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the sixth embodiment.
Fig. 17 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll and the second plate roll when printing is performed by the gravure printing apparatus in the sixth embodiment.
Fig. 18 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the seventh embodiment.
It is a flowchart for demonstrating the procedure of the angular velocity adjustment method of a 1st plate roll when printing by the gravure printing apparatus in 7th Embodiment.
Fig. 20 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus according to the eighth embodiment.
It is a flowchart for demonstrating the procedure of the angular velocity adjustment method of a 1st plate roll and a 2nd plate roll when printing by the gravure printing apparatus in 8th Embodiment.
22 is a flowchart for explaining a method of manufacturing a multilayer ceramic capacitor.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is shown, and the characteristic of this invention is demonstrated concretely.

The gravure printing apparatus of the present invention performs printing by sandwiching an object to be printed between a plate roll and a drum roll, and transferring ink filled in cells formed on the outer peripheral surface of the plate roll to the object to be printed.

<First embodiment>

1 is a diagram schematically showing the configuration of a main part of a gravure printing apparatus 10 in the first embodiment. The gravure printing apparatus 10 includes a first plate roll 1, a drum roll 2, a first peripheral speed detecting unit 3, a first angular speed adjusting unit 4, a first motor 5, and a motor 6 for a drum roll. include

2 is a perspective view schematically showing the appearance of the first plate roll 1 . As shown in FIG. 2 , a plurality of cells 11 having a shape corresponding to a figure to be printed are formed on the outer peripheral surface 1a of the first plate roll 1 . Ink is filled in the plurality of cells 11 during printing. The rotational driving of the first plate roll 1 is performed by the first motor 5 .

3 is a cross-sectional view of the drum roll 2 . In the present embodiment, the drum roll 2 includes a central portion 2a made of metal and an elastic member 2b provided to cover the central portion 2a. The elastic member 2b is provided on the outer peripheral surface of the drum roll 2 at least on a portion to be in contact with the first plate roll 1 via a printing object. The elastic member 2b is, for example, rubber. The rotational driving of the drum roll 2 is performed by the motor 6 for the drum roll.

It is preferable that the cut surface when cut in the direction perpendicular to the direction of the rotation axis of the drum roll 2 is round, but in relation to processing precision, it may not be round as shown in FIG. 3 . In that case, since the radius r _d of the drum roll 2 differs depending on the position on the outer circumferential surface, it differs according to the circumferential speed position of the outer circumferential surface.

FIG. 4 is a view for explaining an example of a method of performing printing on the print target 20 using the gravure printing apparatus 10 . As shown in Fig. 4, the printing object 20 is sandwiched between the first plate roll 1 and the drum roll 2, and by rotating the first plate roll 1 and the drum roll 2, respectively, the cell ( The ink filled in 11) (see FIG. 2 ) is transferred onto the print object 20 . On the other hand, a pressure is applied to the first plate roll 1 so as not to be separated from the drum roll 2 by a pusher which is a piezoelectric member.

The print object 20 is, for example, a ceramic green sheet formed on a carrier film. In addition, the ink filled in the cells 11 of the first plate roll 1 is, for example, a conductive paste for forming an internal electrode pattern. Accordingly, the ceramic green sheet on which the internal electrode pattern is formed is obtained by printing in the above-described manner. The ceramic green sheet on which the internal electrode pattern is formed is used, for example, in manufacturing a multilayer ceramic capacitor, which is a multilayer ceramic electronic component.

The first circumferential speed detection unit 3 detects the circumferential speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 . As an example, the first peripheral speed detection unit 3 includes a camera, and a plurality of markers for speed detection are provided on the outer peripheral surface of the drum roll 2 . And the marker for speed detection is imaged with a camera, and based on the position of the marker for speed detection in a captured image, the peripheral speed _Vd1 of the drum roll 2 in the position which contacts the 1st plate roll 1 detect

However, the detection method of circumferential speed _Vd1 of the drum roll 2 in the position which contacts the 1st plate roll 1 is not limited to the method mentioned above, It can detect by arbitrary methods. For example, as the 1st circumferential speed detection part 3, you may use a well-known Doppler velocimeter.

The first angular speed adjusting unit 4 is configured such that the circumferential speed V _h1 of the first plate roll 1 coincides with the circumferential speed V _d1 of the drum roll 2 detected by the first circumferential speed detecting unit 3 , the first plate roll Adjust the angular velocity (ω _h1 ) in (1). Since the rotational driving of the first plate roll 1 is performed by the first motor 5 , the first angular speed adjusting unit 4 controls the first motor 5 to thereby control the angular velocity ω _h1 of the first plate roll 1 . ) is adjusted.

Specifically, if the radius at the cut surface when the first plate roll 1 is cut in a direction perpendicular to the rotational axis direction is r ₁ , the first angular velocity adjusting unit 4 sets the angular velocity ω of the first plate roll 1 . _h1 ) controls the first motor 5 so that V _d1 /r ₁ .

5 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 when printing is performed by the gravure printing apparatus 10 in the first embodiment.

In step S1, rotation of the drum roll 2 is started so as to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S2 following step S1, the rotation of the first plate roll 1 is started to rotate at an angular velocity ω ₁ . For example, by controlling the 1st motor 5 by the control part not shown in figure, the 1st plate roll 1 is rotated by angular velocity (omega ₁ ).

In step S3 following step S2, the circumferential speed ( V _d1 ) is detected.

In step S4 following step S3, the first angular velocity adjusting unit 4 detects the peripheral speed V _h1 of the first plate roll 1 by the first peripheral speed detecting unit 3, the drum roll 2 ) Adjust the angular velocity (ω _h1 ) of the first plate roll (1) to match the peripheral speed (V _d1 ). As described above, the first angular velocity adjusting unit 4 controls the first motor 5 so that the angular velocity ω _h1 of the first plate roll 1 becomes V _d1 /r ₁ .

In step S5 following step S4, if the rotation of the drum roll 2 continues, the process returns to step S3 and adjusts the angular velocity ω _h1 of the first plate roll 1 perform again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is finished.

According to the gravure printing apparatus 10 in the first embodiment, the peripheral speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 is detected, The angular velocity of the first plate roll 1 is adjusted so that the detected peripheral speed V _d1 of the drum roll 2 and the peripheral speed V _h1 of the first plate roll 1 coincide. Therefore, even when the shape of the cut surface of the drum roll 2 is not round, the peripheral speed at the position where the first plate roll 1 and the drum roll 2 are in contact with each other can be matched to improve the printing precision.

In addition, in the configuration in which the elastic member 2b is provided on the surface of the drum roll 2, even if the elastic member 2b is deformed, the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2 ), it becomes possible to use the deformed elastic member 2b as it is, thereby reducing the cost.

<Second embodiment>

6 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus 10A in the second embodiment. The gravure printing apparatus 10A in the second embodiment has a second plate roll 31, a second circumferential speed detection unit 32, and a second angular velocity adjusting unit ( 33 ) and a second motor 34 . In addition, the 1st angular velocity adjusting part 4 and the 2nd angular velocity adjusting part 33 may be comprised as one angular velocity adjusting part.

A plurality of cells having a shape corresponding to a figure to be printed are formed on the outer peripheral surface of the second plate roll 31 . Ink is filled in a plurality of cells during printing. The rotational driving of the second plate roll 31 is performed by the second motor 34 .

As described above, the print target 20 is, for example, a ceramic green sheet formed on a carrier film, and the ink filled in the cells of the first plate roll 1 is a conductive paste for forming the internal electrode pattern.

7A is a view showing a state in which the internal electrode pattern 43 is formed by the first plate roll 1 on the ceramic green sheet 42 formed on the carrier film 41 .

The ink filled in the cells of the second plate roll 31 is, for example, a ceramic paste that is coated in order to eliminate a step difference between the internal electrode pattern 43 and a region around it. 7B is a view showing a state in which a ceramic paste pattern 44 is formed around the internal electrode pattern 43 by the second plate roll 31 . By forming the ceramic paste pattern 44 around the internal electrode pattern 43, the above-mentioned step difference is eliminated, and structural defects caused by the density difference inside the laminate, which are easy to occur when a step ceramic green sheet is used, It becomes possible to manufacture a highly reliable multilayer ceramic electronic component capable of suppressing occurrence of delamination, short circuit between internal electrodes, and the like.

The second circumferential speed detection unit 32 detects the circumferential speed V _d2 of the drum roll 2 at a position in contact with the second plate roll 31 via the print target 20 . Detection of circumferential speed _Vd2 may use the detection method similar to the detection of circumferential speed _Vd1 by the 1st circumferential speed detection part 3, and may use another detection method.

The second angular speed adjusting unit 33 is configured such that the circumferential speed V _h2 of the second plate roll 31 coincides with the circumferential speed V _d2 of the drum roll 2 detected by the second circumferential speed detecting unit 32 , the second The angular velocity ω _h2 of the plate roll 31 is adjusted. Since the rotational driving of the second plate roll 31 is performed by the second motor 34 , the second angular speed adjusting unit 33 controls the second motor 34 to thereby control the angular velocity ω _h2 of the second plate roll 31 . ) is adjusted.

Specifically, assuming that the radius at the cut surface when the second plate roll 31 is cut in a direction perpendicular to the rotation axis direction is r ₂ , the second angular velocity adjusting unit 33 sets the angular velocity ω of the second plate roll 31 . The second motor 34 is controlled so that _h2 ) becomes V _d2 /r ₂ .

8 is a flowchart for explaining the procedure of the angular velocity adjustment method of the first plate roll 1 and the second plate roll 31 when printing is performed by the gravure printing apparatus 10A in the second embodiment.

In step S11, the rotation of the drum roll 2 is started to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S12 following step S11, rotation of the first plate roll 1 is started to rotate at an angular velocity ω ₁ . For example, by controlling the 1st motor 5 by the control part not shown in figure, the 1st plate roll 1 is rotated by angular velocity (omega ₁ ).

In step S13 following step S12, rotation of the second plate roll 31 is started to rotate at an angular velocity ω ₂ . For example, by controlling the 2nd motor 34 by the control part not shown in figure, the 2nd plate roll 31 is rotated at angular velocity (omega ₂ ).

In step S14 following step S13, the peripheral speed ( V _d1 ) is detected.

In step S15 that follows step S14, the first angular speed adjusting unit 4 detects the peripheral speed V _h1 of the first plate roll 1 by the first peripheral speed detecting unit 3 detects the drum roll 2 ) to match the circumferential speed V _d1 , the angular velocity ω _h1 of the first plate roll 1 is adjusted. That is, the first angular velocity adjusting unit 4 controls the first motor 5 so that the angular velocity ω _h1 of the first plate roll 1 becomes V _d1 /r ₁ .

In step S16 following step S15, the peripheral speed ( V _d2 ) is detected.

In step S17 that follows step S16 , the drum roll 2 in which the peripheral speed V _h2 of the second plate roll 31 is detected by the second circumferential speed detection unit 32 by the second angular velocity adjusting unit 33 . ) to match the circumferential speed V _d2 , the angular velocity ω _h2 of the second plate roll 31 is adjusted. That is, the second angular velocity adjusting unit 33 controls the second motor 34 so that the angular velocity ω _h2 of the second plate roll 31 becomes V _d2 /r ₂ .

In step S18 following step S17, if the rotation of the drum roll 2 is continuing, the process returns to step S14 and the processing after step S14 is performed again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is ended.

According to the gravure printing apparatus 10A in the second embodiment, even when the shape of the cut surface of the drum roll 2 is not round, the circumferential speed at the position where the first plate roll 1 and the drum roll 2 are in contact is the same. Printing precision can be improved by matching the peripheral speed at the position where the 2nd plate roll 31 and the drum roll 2 contact with the same. Therefore, for example, as shown in FIG. 7B , after the internal electrode pattern 43 is formed by the first plate roll 1 , the ceramic paste pattern 44 is formed by the second plate roll 31 . When forming, the internal electrode pattern 43 and the ceramic paste pattern 44 formed around the internal electrode pattern 43 can be formed with high precision.

<Third embodiment>

Fig. 9 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus 10B in the third embodiment. The gravure printing apparatus 10B in the third embodiment further includes a third peripheral speed detecting unit 51 with respect to the configuration of the gravure printing apparatus 10 in the first embodiment.

The third circumferential speed detection unit 51 detects the circumferential speed V _h1 of the first plate roll 1 at a position in contact with the drum roll 2 via the print target 20 . As an example, the third peripheral speed detection unit 51 includes a camera, and a plurality of markers for speed detection are provided on the outer peripheral surface of the first plate roll 1 . Then, the speed detection marker is imaged by the camera, and based on the position of the speed detection marker in the captured image, the first plate roll 1 at a position in contact with the drum roll 2 via the print target 20 . ) of the peripheral speed (V _h1 ) is detected.

However, the detection method of the circumferential speed V _h1 of the first plate roll 1 at the position in contact with the drum roll 2 through the print target 20 is not limited to the above-described method, and may be used in any method. can be detected by For example, as the 3rd circumferential speed detection part 51, you may use a well-known Doppler velocity meter.

The first angular speed adjusting unit 4 includes a peripheral speed V _h1 of the first plate roll 1 detected by the third circumferential speed detecting unit 51 and the drum roll 2 detected by the first circumferential speed detecting unit 3 . The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between the peripheral speeds V _d1 becomes zero. More specifically, the first angular velocity adjusting unit 4 includes a peripheral speed V _h1 of the first plate roll 1 detected by the third peripheral speed detecting unit 51 and a drum roll detected by the first peripheral speed detecting unit 3 . When the absolute value of the difference of the circumferential speed V _d1 in (2) |V _h1 -V _d1 | is greater than the first threshold value V _th1 , so that the above-described difference (V _h1 -V _d1 ) becomes 0, the first plate roll ( 1) Adjust the angular velocity (ω _h1 ). The first threshold value V _th1 is a threshold value for determining whether the absolute value |V _h1 -V _d1 | of the above-described difference is within an allowable range.

For example, when the circumferential speed V _h1 of the first plate roll ₁ is greater than the _{circumferential} speed V _d1 of the drum roll ₂ , the first Adjust the angular velocity ω _h1 of the plate roll 1 . In addition, when the peripheral speed (V _h1 ) of the first plate roll 1 is smaller than the peripheral speed (V _d1 ) of the drum roll 2, the angular velocity increases by (V _d1 -V _h1 )/r ₁ , the first plate roll ( 1) Adjust the angular velocity (ω _h1 ).

10 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 when printing is performed by the gravure printing apparatus 10B in the third embodiment.

In step S31, the rotation of the drum roll 2 is started to rotate at the angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S32 following step S31, rotation of the first plate roll 1 is started to rotate at an angular velocity ω ₁ . For example, by controlling the 1st motor 5 by the control part not shown in figure, the 1st plate roll 1 is rotated by angular velocity (omega ₁ ).

In step S33 following step S32, the peripheral speed of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 by the first circumferential speed detection unit 3 ( V _d1 ) is detected.

In step S34 following step S33, the peripheral speed ( V _h1 ) is detected.

In step S35 following step S34 , the circumferential speed V _h1 of the first plate roll 1 detected by the third circumferential speed detection unit 51 and the drum roll detected by the first circumferential speed detection unit 3 It is determined whether the absolute value |V _h1 -V _d1 | of the difference of circumferential speed V _d1 of (2) is 1st threshold value V _th1 or less. This determination is implemented by the 1st angular velocity adjustment part 4, for example. If it is determined that the absolute value |V _h1 -V _d1 | of the difference between the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2 is equal to or less than the first threshold V _th1 , the first plate roll The process of step S37 is performed without adjustment of the angular velocity ω _h1 of (1), and if it is determined that it is larger than the 1st _threshold value Vth1, the process of step S36 is implemented.

In step S36, the peripheral speed V _h1 of the 1st plate roll 1 detected by the 3rd peripheral speed detection part 51 by the 1st angular velocity adjustment part 4, and the 1st peripheral speed detection part 3 detect it The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between the peripheral speeds V _d1 of the drum roll 2 is zero.

In step S37, if the rotation of the drum roll 2 is continued, the flow returns to step S33 and the processing after step S33 is performed again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is ended.

According to the gravure printing apparatus 10B in 3rd Embodiment, the peripheral speed V _h1 of the 1st plate roll 1 detected by the 3rd peripheral speed detection part 51, and detection by the 1st peripheral speed detection part 3 Since the angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between the peripheral speeds V _d1 of the drum roll 2 becomes 0, the peripheral speed V _h1 of the first plate roll 1 and the drum roll ( According to the actual difference between the circumferential speeds V _d1 of 2), the angular velocity ω _h1 of the first plate roll 1 can be adjusted. Therefore, even when there is an error in the radius r1 of the first plate roll 1, the peripheral speed at the position where the first plate roll 1 and the drum roll 2 are in contact can be matched, and the printing precision can be further improved. can

<Fourth embodiment>

Fig. 11 is a diagram schematically showing the configuration of a main part of a gravure printing apparatus 10C in the fourth embodiment. The gravure printing apparatus 10C in the fourth embodiment further includes a third peripheral speed detection unit 51 and a fourth peripheral speed detection unit 52 with respect to the configuration of the gravure printing apparatus 10A in the second embodiment. . The 3rd peripheral speed detection part 51 is the same as the 3rd peripheral speed detection part 51 of the gravure printing apparatus 10B in 3rd Embodiment.

The fourth circumferential speed detection unit 52 detects the circumferential speed V _h2 of the second plate roll 31 at a position in contact with the drum roll 2 via the print target 20 . The detection of the peripheral speed V _h2 of the 2nd plate roll 31 can use the detection method similar to the detection of the peripheral speed V _h1 of the 1st plate roll 1 by the 3rd peripheral speed detection part 51 .

The second angular velocity adjusting unit 33 includes the peripheral speed V _h2 of the second plate roll 31 detected by the fourth peripheral speed detecting unit 52 and the drum roll 2 detected by the second peripheral speed detecting unit 32 . The angular velocity ω _h2 of the second plate roll 31 is adjusted so that the difference between the peripheral speeds V _d2 becomes zero. More specifically, the second angular velocity adjustment unit 33 includes a peripheral speed V _h2 of the second plate roll 31 detected by the fourth peripheral speed detection unit 52 , and a drum roll detected by the second peripheral speed detection unit 32 . When the absolute value of the difference of the circumferential speed V _d2 in (2) |V _h2 -V _d2 | is greater than the second threshold value V _th2 , so that the above-described difference (V _h2 -V _d2 ) becomes 0, the second plate roll ( 31) adjust the angular velocity (ω _h2 ). The second threshold value V _th2 is a threshold value for determining whether the absolute value |V _h2 -V _d2 | of the above-described difference is within an allowable range. As described above, the second angular velocity adjusting unit 33 adjusts the angular velocity ω _h2 of the second plate roll 31 by controlling the second motor 34 .

12 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 and the second plate roll 31 when printing is performed by the gravure printing apparatus 10C in the fourth embodiment.

In step S41, the rotation of the drum roll 2 is started to rotate at the angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S42 following step S41, the rotation of the first plate roll 1 is started to rotate at the angular velocity ω ₁ . For example, by controlling the first motor 5 by a control unit (not shown), the first plate roll 1 is rotated at the angular velocity ?1.

In step S43 following step S42, rotation of the second plate roll 31 is started to rotate at an angular velocity ω ₂ . For example, by controlling the 2nd motor 34 by the control part not shown in figure, the 2nd plate roll 31 is rotated at angular velocity (omega ₂ ).

In step S44 following step S43, the circumferential speed ( V _d1 ) is detected.

In step S45 following step S44, the peripheral speed ( V _h1 ) is detected.

In step S46 following step S45, the peripheral speed V _h1 of the first plate roll 1 detected by the third peripheral speed detection unit 51 and the drum roll detected by the first peripheral speed detection unit 3 It is determined whether the absolute value |V _h1 -V _d1 | of the difference of circumferential speed V _d1 of (2) is 1st threshold value V _th1 or less. This determination is implemented by the 1st angular velocity adjustment part 4, for example. If it is determined that the absolute value |V _h1 -V _d1 | of the difference between the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2 is equal to or less than the first threshold V _th1 , the first plate roll The process of step S48 is performed without adjustment of the angular velocity ω _h1 of (1), and when it is determined that it is larger than the 1st _threshold value Vth1, the process of step S47 is implemented.

In step S47, the peripheral speed V _h1 of the 1st plate roll 1 detected by the 3rd peripheral speed detection part 51 by the 1st angular velocity adjustment part 4, and the 1st peripheral speed detection part 3 detect it The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between the peripheral speeds V _d1 of the drum roll 2 is zero.

In step S48, the circumferential speed V _d2 of the drum roll 2 at a position in contact with the second plate roll 31 via the print target 20 is detected by the second circumferential speed detecting unit 32 .

In step S49 following step S48, the circumferential speed of the second plate roll 31 at a position in contact with the drum roll 2 via the print target 20 by the fourth circumferential speed detection unit 52 ( V _h2 ) is detected.

In step S50 following step S49, the peripheral speed V _d2 of the drum roll 2 detected by the third circumferential speed detection unit 51 and the second plate roll detected by the fourth circumferential speed detection unit 52 It is determined whether the absolute value |V _h2 -V _d2 | of the difference of circumferential speed V _h2 of (31) is 2nd threshold value V _th2 or less. This determination is implemented by the 2nd angular velocity adjustment part 33, for example. If it is determined that the absolute value |V _h2 -V _d2 | of the difference between the circumferential speed V _h2 of the second plate roll 31 and the circumferential speed V _d2 of the drum roll 2 is equal to or less than the second threshold V _th2 , the second plate roll The process of step S52 is performed without adjustment of the angular velocity ω _h2 of (31), and when it is determined that it is larger than the 2nd threshold value _Vth2 , the process of step S51 is implemented.

In step S51, the peripheral speed V _h2 of the 2nd plate roll 31 detected by the 4th peripheral speed detection part 52 by the 2nd angular velocity adjustment part 33, and the 3rd peripheral speed detection part 51 detect it The angular velocity ω _h2 of the second plate roll 31 is adjusted so that the difference between the peripheral speeds V _d2 of the drum roll 2 is zero.

In step S52, if the rotation of the drum roll 2 is continued, the flow returns to step S44 and the processing after step S44 is performed again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is ended.

According to 10C of gravure printing apparatuses in 4th Embodiment, the peripheral speed V _h1 of the 1st plate roll 1 detected by the 3rd peripheral speed detection part 51, and detection by the 1st peripheral speed detection part 3 The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between the peripheral speeds V _d1 of the drum roll 2 is 0, and the second plate roll detected by the fourth peripheral speed detection unit 52 ( The angular velocity ω _h2 of the second plate roll 31 so that the difference between the peripheral speed V _h2 of 31 ) and the peripheral speed V _d2 of the drum roll 2 detected by the third peripheral speed detection unit 51 becomes 0 . to adjust That is, according to the actual difference between the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2, the angular velocity ω _h1 of the first plate roll 1 is adjusted, In addition, according to the actual difference between the peripheral speed V _h2 of the second plate roll 31 and the peripheral speed V _d2 of the drum roll 2 , the angular velocity ω _h2 of the second plate roll 31 is adjusted. Therefore, even when there is an error in the radius r1 of the first plate roll 1, the circumferential speed at the position where the first plate roll 1 and the drum roll 2 are in contact can be matched, and the second plate roll 31 ), even when there is an error in the radius r2, since the peripheral speed at the position where the second plate roll 31 and the drum roll 2 are in contact can be matched, the printing precision can be further improved.

<Fifth embodiment>

Fig. 13 is a diagram schematically showing the configuration of a main part of a gravure printing apparatus 10D in the fifth embodiment. A gravure printing apparatus 10D in the fifth embodiment includes a first plate roll 1, a drum roll 2, a first motor 5, a motor 6 for drum rolls, a first angular velocity adjusting unit 61, and a storage unit. (62) and a rotation position detection unit (63).

The rotational position detection unit 63 is, for example, an encoder, and detects the rotational position θ of the rotational reference point of the drum roll 2 .

The memory|storage part 62 memorize|stores peripheral speed data ((V _d (θ))) indicating the relationship between the rotational position θ of the drum roll 2 and the peripheral speed of the drum roll 2 .

Fig. 14(a) is a diagram showing the relationship between the rotational position θ of the drum roll 2 and the peripheral speed of the drum roll 2 at the peripheral speed measurement position. By measuring the peripheral speed according to the rotational position θ of the drum roll 2, the peripheral speed indicating the relationship between the rotational position θ of the drum roll 2 and the peripheral speed of the drum roll 2 at the rotational position θ The data ((V _d (θ))) is obtained in advance.

The circumferential speed data V _d (θ) is data of at least one circumferential speed of the drum roll 2 . However, after measuring the circumferential speed for a plurality of wheels, the average circumferential speed for each rotational position may be obtained, and the average circumferential speed may be stored in the storage unit 62 as circumferential speed data V _d (θ).

The first angular velocity adjusting unit 61 is based on the rotational position θ of the drum roll 2 detected by the rotational position detecting unit 63 and the peripheral velocity data V _d (θ) stored in the storage unit 62 . , to obtain the peripheral speed (V _d1 ) of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 , and to obtain the circumferential speed (V _d1 ) of the drum roll 2 and the first The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the peripheral speed V _h1 of the plate roll 1 coincides. Specifically, the first angular velocity adjusting unit 4 controls the first motor 5 so that the angular velocity ω _h1 of the first plate roll 1 becomes V _d1 /r ₁ .

Here, when the position at which the peripheral speed of the drum roll 2 is measured and the position where the drum roll 2 comes into contact with the first plate roll 1 through the print target 20 do not match, the drum roll 2 It is necessary to correct by the angular fraction between the two positions in the direction of rotation of . For example, if the angle between the circumferential speed measurement position in the rotational direction of the drum roll 2 and the position in contact with the first plate roll 1 through the print target 20 is θ ₁ , the drum roll ( The relationship between the rotational position θ of 2) and the peripheral speed of the drum roll 2 at the position in contact with the first plate roll 1 via the print target 20 is as shown in Fig. 14(b). , the circumferential speed data shown in Fig. 14(a) is shifted by θ ₁ .

15 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 when printing is performed by the gravure printing apparatus 10D in the fifth embodiment.

In step S61 , the rotational position θ of the rotational reference point of the drum roll 2 is detected by the rotational position detecting unit 63 .

In step S62 following step S61, the peripheral velocity data V _d (θ) stored in the storage unit 62 is read by the first angular velocity adjusting unit 61 .

In step S63 following step S62, rotation of the drum roll 2 is started to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S64 following step S63 , the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 and the peripheral speed data V _d (θ) read from the storage unit 62 . )), the peripheral speed (V _d1 ) of the drum roll 2 at the position in contact with the first plate roll 1 via the printing object 20 is obtained, and the obtained peripheral speed V of the drum roll 2 is obtained. _d1 ) and the circumferential speed (V _h1 ) of the first plate roll 1 to match the angular velocity (ω _h1 ) of the first plate roll (1) is adjusted. As described above, the first angular velocity adjusting unit 61 adjusts the angular velocity ω _h1 of the first plate roll 1 by controlling the first motor 5 .

In step S65 following step S64, if the drum roll 2 continues to rotate, the process returns to step S64 and the angular velocity ω _h1 of the first plate roll 1 is adjusted again. do. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is ended.

On the other hand, until the rotation of the drum roll 2 is stopped, since the processing of step S64 is performed every predetermined time, when the rotational position θ of the rotation reference point of the drum roll 2 is first detected, , thereafter, the rotational position θ of the rotation reference point of the drum roll 2 can be grasped without performing detection every time.

According to the gravure printing apparatus 10D in the fifth embodiment, it is necessary to detect the peripheral speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 . Since there is not, the circumferential speed detection part for detecting the circumferential speed V _d1 of the drum roll 2 can be omitted, and cost can be reduced.

<Sixth embodiment>

Fig. 16 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus 10E in the sixth embodiment. The gravure printing apparatus 10E in the sixth embodiment has a second plate roll 31, a second angular velocity adjusting unit 71, and a second motor 34 with respect to the configuration of the gravure printing apparatus 10D in the fifth embodiment. ) is additionally included. In addition, the 1st angular velocity adjusting part 61 and the 2nd angular velocity adjusting part 71 may be comprised as one angular velocity adjusting part.

The second angular velocity adjusting unit 71 is based on the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 and the peripheral velocity data V _d (θ) stored in the storage unit 62 . , to obtain the peripheral speed (V _{d2 ) of the drum roll 2 at the position in contact with the second plate roll 31 via the print object 20 , and the obtained peripheral speed (V d2 )} of the drum roll 2 and the second The angular velocity ω _h2 of the second plate roll 31 is adjusted so that the peripheral speed V _h2 of the plate roll 31 coincides. Specifically, the second angular velocity adjusting unit 71 controls the second motor 34 so that the angular velocity ω _h2 of the second plate roll 31 becomes V _d2 /r ₂ .

On the other hand, if the position at which the peripheral speed of the drum roll 2 is measured and the position in contact with the second plate roll 31 through the print target 20 do not coincide, the 2 in the rotation direction of the drum roll 2 It is necessary to compensate by the angle between the positions of the dogs.

17 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 and the second plate roll 31 when printing is performed by the gravure printing apparatus 10E in the sixth embodiment.

In step S71 , the rotational position θ of the rotational reference point of the drum roll 2 is detected by the rotational position detecting unit 63 .

In step S72 following step S71, the peripheral velocity data V _d (θ) stored in the storage unit 62 is read by the first angular velocity adjusting unit 61 and the second angular velocity adjusting unit 71 . .

In step S73 following step S72, rotation of the drum roll 2 is started to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S74 following step S73, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 and the peripheral speed data V _d (θ) read from the storage unit 62 . ), the peripheral speed (V _d1 ) of the drum roll 2 at the position in contact with the first plate roll 1 via the printing object 20 is obtained, and the obtained peripheral speed (V _d1 ) of the drum roll 2 is obtained. ) and the peripheral speed (V _h1 ) of the first plate roll (1) to match the angular velocity (ω _h1 ) of the first plate roll (1) is adjusted. As described above, the first angular velocity adjusting unit 61 adjusts the angular velocity ω _h1 of the first plate roll 1 by controlling the first motor 5 .

In step S75 following step S74, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 and the peripheral speed data V _d (θ) read from the storage unit 62 . )), the peripheral speed (V _d2 ) of the drum roll 2 at the position in contact with the second plate roll 31 via the print target 20 is obtained, and the obtained peripheral speed V of the drum roll 2 is obtained. _d2 ) and the peripheral speed (V _h2 ) of the second plate roll 31 to match the angular velocity (ω _h2 ) of the second plate roll 31 is adjusted. The second angular velocity adjusting unit 71 adjusts the angular velocity ω _h2 of the second plate roll 31 by controlling the second motor 34 .

According to the gravure printing apparatus 10E in the sixth embodiment, the peripheral speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 and the second plate roll Since it is not necessary to detect the circumferential speed V _d2 of the drum roll 2 at the position in contact with 31 , the circumferential speed detection unit for detecting the circumferential speed V _d1 and V _d2 of the drum roll 2 may be omitted. can, and cost can be reduced.

<Seventh embodiment>

Fig. 18 is a diagram schematically showing the configuration of a main part of a gravure printing apparatus 10F in the seventh embodiment. The gravure printing apparatus 10F in 7th Embodiment further includes the 3rd peripheral speed detection part 51 with respect to the structure of the gravure printing apparatus 10D in 5th Embodiment shown in FIG.

The 3rd peripheral speed detection part 51 in this embodiment is the same as the 3rd peripheral speed detection part 51 of the gravure printing apparatus 10B in 3rd Embodiment. That is, the 3rd circumferential speed detection part 51 detects the circumferential speed V _h1 of the 1st plate roll 1 in the position which contacts the drum roll 2 via the print object 20 .

The first angular velocity adjustment unit 61 first, the rotation position θ of the drum roll 2 detected by the rotation position detection unit 63 and the peripheral velocity data V _d (θ) stored in the storage unit 62 ) Based on it, the peripheral speed V _d1 of the drum roll 2 in the position which contacts the 1st plate roll 1 via the printing object 20 is calculated|required. Next, the first angular velocity adjusting unit 61 includes the peripheral velocity V _h1 of the first plate roll 1 detected by the third peripheral velocity detection unit 51 and the peripheral velocity V _d1 of the drum roll 2 obtained by the above-described method. ), the angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference (V _h1 -V _d1 ) becomes 0. Here, the adjustment of the angular velocity ω _h1 of the first plate roll 1 is performed by the first angular velocity adjusting unit 4 in the gravure printing apparatus 10B according to the third embodiment, the circumferential speed V _h1 of the first plate roll 1 . ) and the circumferential speed (V _d1 ) of the drum roll 2 (V h1 -V d1 ) so that the difference (V _h1 -V _d1 ) becomes 0, the angular velocity (ω _h1 ) of the first plate roll 1 is adjusted by the same method. can

19 is a flowchart for explaining the procedure of the method for adjusting the angular velocity of the first plate roll 1 when printing is performed by the gravure printing apparatus 10F in the seventh embodiment.

In step S81 , the rotation position θ of the rotation reference point of the drum roll 2 is detected by the rotation position detection unit 63 .

In step S82 following step S81, the peripheral velocity data V _d (θ) stored in the storage unit 62 is read by the first angular velocity adjusting unit 61 .

In step S83 following step S82, rotation of the drum roll 2 is started to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S84 following step S83, the peripheral speed ( V _h1 ) is detected.

In step S85 following step S84, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 by the first angular velocity adjusting unit 61 and the storage unit 62 are Based on the stored circumferential speed data V _d (θ), the circumferential speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 is obtained, and the second 3 The absolute value of the difference between the circumferential speed V _h1 of the first plate roll 1 detected by the circumferential speed detection unit 51 and the circumferential speed V _d1 of the drum roll 2 obtained |V _h1 -V _d1 | 1 It is determined whether or not it is less than or equal to _threshold value Vth1. If it is determined that the absolute value |V _h1 -V _d1 | of the difference between the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2 is less than or equal to the first threshold V _th1 , the first plate roll The process of step S87 is performed without adjustment of the angular velocity ω _h1 of (1), and when it is determined that it is larger than the 1st _threshold value Vth1, the process of step S86 is implemented.

In step S86, the circumferential speed V _h1 of the first plate roll 1 detected by the first angular speed adjusting unit 61 and the third circumferential speed detecting unit 51, and the obtained circumferential speed V of the drum roll 2 The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between _d1 ) becomes zero.

In step S87, if the rotation of the drum roll 2 is continued, the flow returns to step S84 and the processing after step S84 is performed again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is ended.

According to the gravure printing apparatus 10F in the seventh embodiment, similarly to the gravure printing apparatus 10D in the fifth embodiment, the peripheral speed detecting unit for detecting the peripheral speed V _d1 of the drum roll 2 is omitted. can, and cost can be reduced. Further, similarly to the gravure printing apparatus 10B in the third embodiment, even when an error exists in the radius r1 of the first plate roll 1, the position where the first plate roll 1 and the drum roll 2 contact each other. It is possible to match the peripheral speed in

<Eighth embodiment>

Fig. 20 is a diagram schematically showing the configuration of a main part of the gravure printing apparatus 10G in the eighth embodiment. The gravure printing apparatus 10G in the eighth embodiment further includes a third peripheral speed detection unit 51 and a fourth peripheral speed detection unit 52 to the gravure printing apparatus 10E in the sixth embodiment shown in FIG. 16 . include

The 3rd peripheral speed detection part 51 in this embodiment is the same as the 3rd peripheral speed detection part 51 of 10 C of gravure printing apparatuses in 4th embodiment. That is, the 3rd circumferential speed detection part 51 detects the circumferential speed V _h1 of the 1st plate roll 1 in the position which contacts the drum roll 2 via the print object 20 .

The 4th peripheral speed detection part 52 in this embodiment is the same as the 4th peripheral speed detection part 52 of 10 C of gravure printing apparatuses in 4th Embodiment. That is, the 4th peripheral speed detection part 52 detects the peripheral speed V _h2 of the 2nd plate roll 31 in the position which contacts the drum roll 2 via the printing object 20 .

The second angular velocity adjustment unit 71 first, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 and the peripheral velocity data V _d (θ) stored in the storage unit 62 . Based on it, the peripheral speed V _d2 of the drum roll 2 in the position which contacts the 2nd plate roll 31 via the printing object 20 is calculated|required. Next, the second angular velocity adjusting unit 71 includes the peripheral velocity V _h2 of the second plate roll 31 detected by the fourth peripheral velocity detection unit 52 and the peripheral velocity V _d2 of the drum roll 2 obtained by the above-described method. ), the angular velocity ω _h2 of the second plate roll 31 is adjusted so that the difference (V _h2 -V _d2 ) becomes zero. The adjustment of the angular velocity ω _h2 of the second plate roll 31 here is performed by the second angular velocity adjusting unit 33 in the gravure printing apparatus 10C according to the fourth embodiment, the peripheral velocity V _h2 of the second plate roll 31 . ) and the circumferential speed (V _d2 ) of the drum roll 2 (V h2 -V d2 ) so that the difference (V _h2 -V _d2 ) becomes 0, the angular velocity (ω _h2 ) of the second plate roll 31 is adjusted by the same method as can

21 is a flowchart for explaining the procedure of the angular velocity adjustment method of the first plate roll 1 and the second plate roll 31 when printing is performed by the gravure printing apparatus 10G in the eighth embodiment.

In step S91 , the rotation position θ of the rotation reference point of the drum roll 2 is detected by the rotation position detection unit 63 .

In step S92 following step S91, the peripheral velocity data V _d (θ) stored in the storage unit 62 is read by the first angular velocity adjusting unit 61 .

In step S93 following step S92, rotation of the drum roll 2 is started to rotate at an angular velocity ω _d . For example, by controlling the motor 6 for drum rolls by a control part not shown in figure, the drum roll 2 is rotated at angular velocity omega _d .

In step S94 following step S93, the peripheral speed ( V _h1 ) is detected.

In step S95 following step S94, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 by the first angular velocity adjusting unit 61 and the storage unit 62 are Based on the stored circumferential speed data V _d (θ), the circumferential speed V _d1 of the drum roll 2 at a position in contact with the first plate roll 1 via the print target 20 is obtained, and the second 3 The absolute value of the difference between the circumferential speed V _h1 of the first plate roll 1 detected by the circumferential speed detection unit 51 and the circumferential speed V _d1 of the drum roll 2 obtained |V _h1 -V _d1 | 1 It is determined whether or not it is less than or equal to _threshold value Vth1. If it is determined that the absolute value |V _h1 -V _d1 | of the difference between the circumferential speed V _h1 of the first plate roll 1 and the circumferential speed V _d1 of the drum roll 2 is less than or equal to the first threshold V _th1 , the first plate roll The process of step S97 is performed without adjustment of the angular velocity ω _h1 of (1), and when it is determined that it is larger than the 1st _threshold value Vth1, the process of step S96 is implemented.

In step S96, the circumferential speed V _h1 of the first plate roll 1 detected by the first angular speed adjusting unit 61 and the third circumferential speed detecting unit 51, and the obtained circumferential speed V of the drum roll 2 The angular velocity ω _h1 of the first plate roll 1 is adjusted so that the difference between _d1 ) becomes zero.

In step S97 , the circumferential speed V _h2 of the second plate roll 31 at a position in contact with the drum roll 2 via the print target 20 is detected by the fourth circumferential speed detection unit 52 .

In step S98 following step S97, the rotational position θ of the drum roll 2 detected by the rotational position detection unit 63 by the second angular velocity adjusting unit 71, and the storage unit 62 Based on the circumferential speed data (V _d (θ)) stored in, the circumferential speed (V _d2 ) of the drum roll 2 at the position in contact with the second plate roll 31 through the print target 20 is obtained, Absolute value |V _h2 -V _d2 | of the difference between the circumferential speed V _h2 of the second plate roll 31 detected by the fourth circumferential speed detection unit 52 and the circumferential speed V _d2 of the drum roll 2 obtained It is determined whether or not it is 2nd threshold value V _th2 or less. If it is determined that the absolute value |V _h2 -V _d2 | of the difference between the circumferential speed V _h2 of the second plate roll 31 and the circumferential speed V _d2 of the drum roll 2 is equal to or less than the second threshold V _th2 , the second plate roll The process of step S100 is performed without adjustment of the angular velocity ω _h2 of (31), and if it is determined that it is larger than the 2nd threshold value _Vth2 , the process of step S99 is implemented.

In step S99, the circumferential speed V _h2 of the second plate roll 31 detected by the second angular speed adjusting unit 71 and the fourth circumferential speed detecting unit 52, and the obtained circumferential speed V of the drum roll 2 The angular velocity ω _h2 of the second plate roll 31 is adjusted so that the difference between _d2 ) becomes zero.

In step S100, if the rotation of the drum roll 2 is continued, the process returns to step S94 and the processing after step S94 is performed again. On the other hand, when the gravure printing is finished and the rotation of the drum roll 2 is stopped, the processing of the flowchart is finished.

According to the gravure printing apparatus 10G in the eighth embodiment, similarly to the gravure printing apparatus 10E in the sixth embodiment, a peripheral speed detection unit for detecting the peripheral speeds V _d1 and V _d2 of the drum roll 2 . can be omitted, and the cost can be reduced. Further, similarly to the gravure printing apparatus 10C in the fourth embodiment, even when an error exists in the radius r1 of the first plate roll 1, the position where the first plate roll 1 and the drum roll 2 contact each other. It is possible to match the circumferential speed at Therefore, the printing precision can be further improved.

(Manufacturing method of multilayer ceramic capacitor)

22 is a flowchart for explaining a method of manufacturing a multilayer ceramic capacitor.

In step S111, a plurality of ceramic green sheets are prepared. As a ceramic green sheet, a well-known thing can be used.

In step S112 following step S111, an internal electrode pattern is formed on a specific one of a plurality of ceramic green sheets using one of the gravure printing apparatuses in the first to eighth embodiments described above. That is, the internal electrode pattern is formed by printing the conductive paste for internal electrodes on the ceramic green sheet using the above-described gravure printing apparatus.

In step S113 following step S112, a multilayer body is manufactured by stacking a plurality of ceramic green sheets including ceramic green sheets on which internal electrode patterns are formed. Specifically, a predetermined number of ceramic green sheets having no internal electrode pattern formed thereon are stacked, and ceramic green sheets having internal electrode patterns formed thereon are sequentially stacked, and a ceramic green sheet having no internal electrode pattern formed thereon is stacked. By laminating a predetermined number of sheets, a laminate is produced. This laminate is an unfired mother laminate.

In step S114 following step S113, after the laminate is pressed, it is divided into chip shapes by various methods such as dicing or press cutting.

In step S115 following step S114, a ceramic laminate is manufactured by firing the individualized chips. The firing temperature varies depending on the material of the ceramic layer or the internal electrode, but is, for example, 900°C or higher and 1300°C or lower. Next, the corners and ridges of the ceramic laminate are made into a round shape by barrel polishing or the like.

In step S116 following step S115, external electrodes are formed on both end surfaces of the ceramic laminate.

By the above-described method, a multilayer ceramic capacitor, which is a multilayer ceramic electronic component, is manufactured.

The present invention is not limited to the above embodiments, and various applications and modifications can be made within the scope of the present invention. For example, the characteristic structures in each embodiment mentioned above can be combined suitably.

In the gravure printing apparatus 10A in the second embodiment, the first angular velocity adjusting unit 4 adjusts the angular velocity ω _h1 of the first plate roll 1, and the second angular velocity adjusting unit 33 adjusts the second plate roll It is configured to adjust the angular velocity ω _h2 of 31, the angular velocity of only one of the first plate roll 1 and the second plate roll 31 is adjusted, and the other plate roll is the drum roll 2 ) may be rotated manually so that it rotates together with the rotation. In that case, in order to improve the printing precision between printing by the first plate roll 1 and printing by the second plate roll 31, the first plate roll 1 is manually rotated to rotate the angular velocity of the second plate roll 31 ( It is desirable to control to adjust ω _h2 ). The same applies to the gravure printing apparatus 10C in the fourth embodiment including two plate rolls, the gravure printing apparatus 10E in the sixth embodiment, and the gravure printing apparatus 10G in the eighth embodiment.

On the other hand, in the above-described embodiment, the first plate roll 1 to be printed is the first plate roll 1 and the plate roll to be printed later is described as the second plate roll 31. A second plate roll may be called, and a plate roll to be printed later may be called a first plate roll.

The number of plate rolls is not limited to one or two, and three or more may be sufficient.

1: first plate roll
2: drum roll
2b: elastic member
3: 1st circumferential speed detection part
4: first angular velocity adjusting unit
5: first motor
6: Motor for drum roll
10, 10A, 10B, 10C, 10D, 10E, 10F, 10G: gravure printing device
11: cell
20: object to be printed
31: second plate roll
32: second peripheral speed detection unit
33: second angular velocity adjustment unit
34: second motor
51: third peripheral speed detection unit
52: fourth peripheral speed detection unit
61: first angular velocity adjusting unit
62: memory
63: rotation position detection unit
71: second angular velocity adjustment unit

Claims (10)

A gravure printing apparatus for printing by sandwiching a print object between a plate roll and a drum roll, and transferring ink filled in cells formed on the outer peripheral surface of the plate roll to the print object, comprising:
A first plate roll having the cell having a shape corresponding to a figure to be printed on an outer circumferential surface of which is formed;
the drum roll;
a first circumferential speed detection unit for detecting a circumferential speed of the drum roll at a position in contact with the first plate roll via the printing object;
and a first angular velocity adjusting part for adjusting the angular velocity of the first plate roll so that the peripheral speed of the drum roll detected by the first peripheral speed detecting part coincides with the peripheral speed of the first plate roll. According to claim 1,
a second plate roll having the cell having a shape corresponding to the figure to be printed on the outer circumferential surface of which is formed;
a second peripheral speed detection unit for detecting a peripheral speed of the drum roll at a position in contact with the second plate roll through the printing object;
Gravure printing apparatus, characterized in that it further comprises a second angular velocity adjusting unit for adjusting the angular velocity of the second plate roll so that the peripheral speed of the drum roll detected by the second peripheral speed detection unit coincides with the peripheral speed of the second plate roll. 3. The method of claim 1 or 2,
Further comprising a third peripheral speed detection unit for detecting the peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object,
The first angular velocity adjusting unit adjusts the angular velocity of the first plate roll so that the difference between the peripheral speed of the first plate roll detected by the third peripheral speed detection part and the peripheral speed of the drum roll detected by the first peripheral speed detection part becomes 0 Gravure printing apparatus, characterized in that. 3. The method of claim 2,
a third peripheral speed detecting unit for detecting a peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object;
Further comprising a fourth peripheral speed detection unit for detecting the peripheral speed of the second plate roll at a position in contact with the drum roll through the printing object,
The first angular velocity adjusting unit adjusts the angular velocity of the first plate roll so that the difference between the peripheral speed of the first plate roll detected by the third peripheral speed detection unit and the peripheral speed of the drum roll detected by the first peripheral speed detection unit becomes zero, ,
The second angular velocity adjusting unit adjusts the angular velocity of the second plate roll so that the difference between the peripheral speed of the second plate roll detected by the fourth peripheral speed detection unit and the peripheral speed of the drum roll detected by the second peripheral speed detection unit becomes 0 Gravure printing apparatus, characterized in that. A gravure printing apparatus for printing by sandwiching a print object between a plate roll and a drum roll, and transferring ink filled in cells formed on the outer peripheral surface of the plate roll to the print object, comprising:
A first plate roll having the cell having a shape corresponding to a figure to be printed on an outer circumferential surface of which is formed;
the drum roll;
a storage unit for storing circumferential speed data indicating a relationship between a rotational position of the drum roll and a circumferential speed of the drum roll;
a rotational position detection unit for detecting the rotational position of the drum roll;
Based on the rotation position of the drum roll detected by the rotation position detection unit and the peripheral speed data stored in the storage unit, the peripheral speed of the drum roll at a position in contact with the first plate roll through the print object is determined Gravure printing apparatus comprising: a first angular velocity adjusting unit for adjusting the angular velocity of the first plate roll so as to match the obtained peripheral speed of the drum roll and the obtained peripheral speed of the first plate roll. 6. The method of claim 5,
a second plate roll having the cell having a shape corresponding to the figure to be printed on the outer circumferential surface of which is formed;
Based on the rotational position of the drum roll detected by the rotational position detection unit and the peripheral speed data stored in the storage unit, the peripheral speed of the drum roll at a position in contact with the second plate roll via the print object is determined. Gravure printing apparatus, characterized in that it further comprises a second angular velocity adjusting unit for adjusting the angular velocity of the second plate roll so that the obtained peripheral speed of the drum roll and the obtained peripheral speed of the second plate roll coincide. 7. The method of claim 5 or 6,
Further comprising a third peripheral speed detection unit for detecting the peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object,
The first angular speed adjusting unit makes a difference between the peripheral speed of the first plate roll detected by the third peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the first plate roll through the print object to be 0; Gravure printing apparatus, characterized in that for adjusting the angular speed of the first plate roll. 7. The method of claim 6,
a third peripheral speed detecting unit for detecting a peripheral speed of the first plate roll at a position in contact with the drum roll through the printing object;
Further comprising a fourth peripheral speed detection unit for detecting the peripheral speed of the second plate roll at a position in contact with the drum roll through the printing object,
The first angular speed adjusting unit makes a difference between the peripheral speed of the first plate roll detected by the third peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the first plate roll through the print object to be 0; Adjusting the angular velocity of the first plate roll,
The second angular speed adjusting unit makes a difference between the peripheral speed of the second plate roll detected by the fourth peripheral speed detecting part and the peripheral speed of the drum roll at a position in contact with the second plate roll through the print object to be 0; Gravure printing apparatus, characterized in that for adjusting the angular speed of the second plate roll. 9. The method of any one of claims 1, 2, 4 to 6, and 8, wherein
The gravure printing apparatus, characterized in that the elastic member is disposed on the outer peripheral surface of the drum roll at least in contact with the first plate roll through the object to be printed. A step of forming an internal electrode pattern on a ceramic green sheet using the gravure printing apparatus according to any one of claims 1, 2, 4 to 6, and 8;
manufacturing a laminate by laminating a plurality of the ceramic green sheets including the ceramic green sheets on which the internal electrode patterns are formed;
a step of firing the laminate;
A method of manufacturing a multilayer ceramic capacitor, comprising a step of providing an external electrode to the laminate after firing.

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