JP6652381B2 - Analysis apparatus, analysis method, and analysis program - Google Patents

Description

  The present invention relates to an analysis device, an analysis method, and an analysis program for analyzing the transport state of a long strip-shaped substrate using a computer.

  2. Description of the Related Art Conventionally, there has been known a simulation apparatus that analyzes a conveyance state of a printing medium as a flexible medium using a computer. For example, in the transport route design support apparatus of Patent Document 1, the behavior of a flexible medium is simulated after the flexible medium is discretized into a spring-mass system. Further, in the simulation device of Patent Document 2, a model of a flexible medium is created by connecting a plurality of rigid elements with a spring, and the motion of the flexible medium is calculated in a time series.

JP 2007-102428 A JP 2010-282650 A

  Both the transport route design support device of Patent Literature 1 and the simulation device of Patent Literature 2 are directed to transport of a printing sheet having a front end and a rear end (so-called sheet transport). In the case of single-sheet transport, print sheets are supplied one by one from the feeder to the transport path. On the other hand, in a commercial ink jet printer, printing is performed while a long strip-shaped printing paper is transported in a longitudinal direction (roll-to-roll transport) between a plurality of rollers. In the case of the roll-to-roll conveyance, in an initial state before the conveyance, the printing paper is previously spread over the entire area of the conveyance path. For this reason, the simulation method of single-wafer conveyance as in Patent Literature 1 and Patent Literature 2 cannot be directly applied to roll-to-roll conveyance.

  In addition to the printing apparatus, various apparatuses for treating a long strip-shaped substrate while performing roll-to-roll transport of the substrate have been proposed. Also in these devices, it is required to accurately analyze the transport state of the base material.

  The present invention has been made in view of such circumstances, and is directed to a roll-to-roll conveyance in which the transfer of a base material is started from a state in which a long strip-shaped base material is stretched over the entire transfer path. An object of the present invention is to provide an analysis device, an analysis method, and an analysis program that can accurately analyze a transport state of a material.

In order to solve the above-mentioned problems, a first invention of the present application is an analysis device that analyzes a transport state of a long strip-shaped substrate using a computer, and includes an unwinding unit that unwinds the substrate and a winding unit that winds the substrate. Take-off unit, a path setting unit that sets the transport path of the substrate including a plurality of rollers, a substrate setting unit that sets the characteristics of the substrate, and a set value of the path setting unit and the substrate setting unit. A model creation unit that creates a virtual model of the transfer device, an initial state calculation unit that calculates a force generated on the base material before the start of transfer in the virtual model, and the force calculated by the initial state calculation unit. While using, comprising a transfer state analysis unit for analyzing the transfer state of the base material after the start of transfer, the force calculated by the transfer state analysis unit, the unwinding unit and the winding unit to the base material including the initial tension generated , The virtual model is a three-dimensional model having a width in the width direction perpendicular to the transport direction of the substrate, the initial state calculation unit, the force generated in the substrate in the transport direction and the width direction, Calculate .

The second shot light of the present application is a analysis apparatus of the first invention, the path setting unit, at least, for each of a plurality of said rollers, the position, set size, and the information of the rotation direction.

The third shot Ming of the present application is a first invention or the second shot Ming analysis apparatus, the path setting unit, a part of the set value, it is possible to set additional information of the error.

The fourth shot Ming of the present application is a analyzing device according to any one invention of the first invention to the third shot bright, the path setting unit is capable of setting the characteristic change position to alter the properties of the substrate .

The fifth shots light of the present application is a analyzing device according to any one invention of the first invention through the fourth rounds bright, the substrate setting unit, at least, the thickness of the substrate, a width, and a Young's modulus Set.

The sixth shot light of the present application is a analyzing device according to any one invention of the first invention to the fifth rounds bright, the substrate setting unit, a part of the set value, it can be added setting information error It is.

Seventh rounds light of the present application is a analyzing device according to any one invention of the first invention to the sixth rounds bright, the initial state calculation section, a substantially flat condition as a natural state, the roller base member Calculate the restoring force generated in the portion that comes into contact with the.

Eighth rounds light of the present application is a analyzing device according to any one invention of the first invention to the seventh rounds bright, the transport state analyzer analyzes the transport state of the substrate by mechanical analysis, the mechanism The stress and deformation generated in the base material, which are one element of the analysis, are calculated by the finite element method.

Ninth rounds light of the present application is a analyzing device according to any one invention of the first invention to eighth rounds bright, at least one of said unwinding unit and the winding unit in the virtual model, the base material Are wound multiple times with the same diameter.

The tenth invention of the present application is an analysis method for analyzing the transport state of a long strip-shaped substrate using a computer, comprising: a) an unwinding unit for unwinding the substrate and a winding unit for unwinding the substrate; Setting a transfer route of the base material including the rollers described above, b) setting the characteristics of the base material, and c) setting a virtual model of the transfer device based on the set values of the steps a) and b). D) calculating a force generated on the base material before the start of the transfer in the virtual model, and e) setting the base material after the start of the transfer using the force calculated in the step d) It includes a step of analyzing the conveyance state of the said force which the step e) is calculated, see contains the initial tension generated on the substrate by the unwinding unit and the winding unit, the virtual model , In the width direction perpendicular to the transport direction of the substrate A three-dimensional model with rising, the step d), including the step of calculating the force generated in the base material for the conveying direction and the width direction.

Eleventh invention of the present application relates to a solution析方method of the tenth aspect of the present invention, in the step a), at least for each of a plurality of said rollers, the position, size, and sets the information of the rotation direction.

Twelfth invention of the present application relates to a tenth rounds bright or solutions析方method of the eleventh invention, in the step a), a part of the set value, it is possible to set additional information of the error.

13th invention of the present application relates to a method for analyzing any one invention of the first 10 rounds light to the twelfth aspect, in the step a), a set of characteristic change position for changing the properties of the substrate.

A fourteenth invention of the present application is the analysis method according to any one of the tenth to thirteenth inventions, wherein at least the thickness, width, and Young's modulus of the base material are set in the step b).

The fifteenth invention of the present application is the analysis method according to any one of the tenth invention to the fourteenth invention, and in the step b), error information can be additionally set to some set values.

The sixteenth invention of the present application is the analysis method according to any one of the tenth invention to the fifteenth invention, wherein in the step d), the substantially flat state is set to a natural state and the base material comes into contact with the roller. Calculate the restoring force generated in the part.

A seventeenth invention of the present application is the analysis method according to any one of the tenth to sixteenth inventions, wherein in the step e), the transport state of the base material is analyzed using a finite element method.

An eighteenth invention of the present application is the analysis method according to any one of the tenth invention to the seventeenth invention, wherein at least one of the unwinding unit and the winding unit in the virtual model has the same base material. It is wound multiple times with the diameter.

A nineteenth invention of the present application is an analysis program, and when executed by a computer, realizes the analysis method of any one of the tenth to eighteenth inventions.

According to the first to twentieth aspects of the present invention, the transport state of the base material can be analyzed while considering the force generated in the base material in the initial state.

Further, according to the first shot bright to twentieth aspect of the present invention can be analyzed how the width direction of the expansion and meandering of the base material.

In particular, according to the third shot bright and twelfth invention of the present application, it can be analyzed transport state of the substrate in consideration of an error.

In particular, according to the fourth shot bright and the thirteenth invention of the present application, it can be analyzed conveyance state of a substrate when the properties of the substrate in the middle of the transport is changed.

In particular, according to the sixth shot light and the fifteenth aspect of the present application, it can be analyzed transport state of the substrate in consideration of an error.

In particular, according to the ninth rounds light and eighteenth aspect of the present application, than to create a model substrate is wound spirally, it is possible to reduce the operation load of the analysis process.

FIG. 3 is a diagram illustrating a hardware configuration of an analysis device. FIG. 3 is a block diagram conceptually showing functions realized in the analysis device. 9 is a flowchart illustrating a flow of an analysis process. FIG. 4 is a diagram illustrating an example of a virtual model. FIG. 4 is a diagram illustrating a configuration of an unwinding unit of the virtual model. FIG. 3 is a diagram illustrating a configuration near a roller of the virtual model. It is a figure showing a modification of a virtual model.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1. Configuration of analysis device>
FIG. 1 is a diagram showing a hardware configuration of an analyzer 1 according to an embodiment of the present invention. The analyzing device 1 is a device for analyzing a transport state of a long strip-shaped flexible base material. For example, in an inkjet printer for commercial printing, an image is recorded on the surface of the printing paper by discharging ink on the surface of the printing paper while transporting the printing paper as a long strip-shaped base material in the longitudinal direction. Further, in the manufacturing process of the chemical battery, a material serving as an electrode is applied to the surface of the base material while transporting the electrolyte film or the metal foil as the long strip-shaped base material in the longitudinal direction. In addition, in various fields other than printing and fuel cells, various transporting devices for transporting long strip-shaped substrates are known. The analysis device 1 has a function of creating a virtual model of such a substrate transfer device on a computer and analyzing (simulating) the transfer state of the substrate in the transfer device.

  As shown in FIG. 1, the analyzer 1 of the present embodiment has a computer main body 10, a disk reading unit 20, a display unit 30, and an input unit 40. The disk reading unit 20, the display unit 30, and the input unit 40 are communicably connected to the computer main body 10 by wire or wirelessly.

  The computer main body 10 includes an arithmetic processing unit 11 such as a CPU, a memory 12 such as a RAM, and a storage unit 13 such as a hard disk drive. A computer program P for executing an analysis process is installed in the storage unit 13. The computer program P is read from a computer-readable storage medium D such as a CD or a DVD via the disk reading unit 20 and stored in the storage unit 13 in the computer main body 10. When the computer program P is installed in the computer main body 10, functions required for the analysis processing are realized in the computer main body 10.

  The display unit 30 is a part for displaying various information related to the processing of the analysis device 1. As the display unit 30, for example, a liquid crystal display is used. The input unit 40 is a part for inputting various information to the computer main body 10. For the input unit 40, for example, a keyboard or a mouse is used. The user of the analysis device 1 can instruct the computer main body 10 to execute the analysis process by operating the input unit 40 while checking the display unit 30.

  The functions of the display unit 30 and the input unit 40 may be realized by a single device such as a touch panel display.

  FIG. 2 is a block diagram conceptually showing the functions realized in the analyzer 1. As illustrated in FIG. 2, the analysis device 1 according to the present embodiment includes a path setting unit 51, a base material setting unit 52, a model creation unit 53, an initial state calculation unit 54, and a transfer state analysis unit 55. The functions of these units are realized by the computer main body 10 executing the computer program P read from the storage unit 13.

  In the path setting unit 51, information on a transport route in the transport device to be analyzed is set. In the base material setting section 52, the characteristics of the base material to be conveyed are set. The model creation unit 53 creates a virtual model of the transport device based on the setting values of the path setting unit 51 and the base material setting unit 52. The initial state calculation unit 54 calculates the force generated on the base material before the start of the conveyance. The transfer state analysis unit 55 analyzes the transfer state of the base material after the start of the transfer.

  FIG. 3 is a flowchart illustrating a flow of processing when analyzing the transport state of the base material using the analysis device 1. Hereinafter, the flow of the analysis processing will be described with reference to FIGS. 2 and 3.

  When performing the analysis process, first, the user of the analysis device 1 operates the input unit 40 to activate the computer program P. The analysis device 1 first requests the user to input information on the transport route of the base material based on the activated computer program P.

  The user operates the input unit 40 to input information regarding the transport route of the base material. In the substrate transport device, the substrate stretched over a plurality of rollers is transported in the longitudinal direction by the rotation of the rollers. The user inputs, for example, the position, size, and rotation direction of each of the plurality of rollers. The user also inputs the position of the unwinding unit that unwinds the substrate, the length of the substrate wound on the unwinding unit, and the position of the winding unit that winds the substrate. The path setting unit 51 causes the storage unit 13 to store the input information. Thereby, the transport path of the base material by the plurality of rollers is set (Step S1).

  Note that the path setting unit 51 may be provided so as to be able to input a set value such as a friction coefficient in addition to the position, size, and rotation direction of each of the plurality of rollers. Further, the path setting unit 51 may be configured to additionally set error information to some set values such as the positions and sizes of the plurality of rollers. Further, a slight inclination of the roller surface with respect to the rotation axis may be additionally set as an error. If the error information is set, it is possible to perform the calculation in consideration of the error in step S4 described later. Further, in step S5 described later, it is possible to analyze the transport state in consideration of the error.

  In addition, not only simple rollers for transport, but also switching devices such as turn bars that switch the transport direction of the substrate, correction devices that correct the meandering of the substrate, and tension In some cases, a tension adjusting device or the like for adjustment is provided. The path setting unit 51 may be able to further set information on these devices.

  Next, the analysis device 1 requests the user to input information on the characteristics of the conveyed base material. The user operates the input unit 40 to input information on the characteristics of the base material. The user inputs, for example, the thickness, width, and Young's modulus (longitudinal modulus) of the base material. In addition, the user may input a damping coefficient and a friction coefficient of the base material in addition to the above information. The base material setting unit 52 causes the storage unit 13 to store the input information. Thereby, the characteristics of the base material to be analyzed are set (Step S2).

  Note that the base material setting unit 52 may be configured to additionally set error information to some set values such as the thickness and width of the base material. In addition, a periodic undulation of the shape of both side edges of the base material and a curl in the transport direction, that is, a curved shape in an initial state may be additionally set as an error. If the error information is set, it is possible to perform the calculation in consideration of the error in step S4 described later. Further, in step S5 described later, it is possible to analyze the transport state in consideration of the error.

  Note that the order of step S1 and step S2 may be reversed. That is, after setting the characteristics of the base material, the transfer route of the base material may be set.

  After the transfer route of the base material and the characteristics of the base material are set, the model creation unit 53 creates a virtual model M of the transfer device (step S3). FIG. 4 is a diagram illustrating an example of the virtual model M. As shown in FIG. 3, the virtual model M of the present embodiment is a three-dimensional model having a conveying direction of the base material 9 and a spread in a width direction perpendicular to the conveying direction. In the example of FIG. 3, the unwinding unit 81, the plurality of rollers 82, the winding unit 83, and the base material 9 constitute a virtual model M.

  The position, size, and rotation direction of each of the plurality of rollers 82 in the virtual model M are determined based on the setting values of the path setting unit 51. Further, the width of the base material 9 in the virtual model M is determined based on the set value of the base material setting unit 52.

  In step S5 described later, the transport state of the base material is analyzed using a mechanism analysis and a finite element method (Finite Element Method). More specifically, the transport state of the base material is analyzed by mechanism analysis, and the deformation of the base material and the stress generated in the base material, which are elements of the mechanism analysis, are calculated by the finite element method.

  FIG. 5 is a diagram illustrating a configuration of the unwinding unit 81 of the virtual model M. In this virtual model M, the end of the base material 9 is connected to the central axis 810 of the unwinding part 81. The base material 9 has a connecting portion 9a extending radially outward from the central axis 810, and a winding portion 9b extending from the outer end of the connecting portion 9a in an arc around the central axis 810. In the unwinding section 81 of the actual substrate transport device, the substrate is spirally wound (while gradually changing the diameter) around the core roller. However, in the virtual model M, the friction between the base materials 9 is not taken into account, and the winding portion 9b of the base material 9 is wound multiple times with the same diameter about the center axis 810. Therefore, even if the transport of the substrate 9 proceeds, the position at which the substrate 9 is fed out from the unwinding section 81 does not change. This makes it possible to reduce the calculation load required for the analysis process as compared with the case where a model in which the base material is spirally wound is created.

  Note that, in the present embodiment, also in the winding section 83, the base material 9 is a model in which the base material 9 is similarly multiply wound with the same diameter about the center axis. The unwinding section 81 and the winding section 83 do not necessarily have to be such models, but at least one of the unwinding section 81 and the winding section 83 has a model in which the base material 9 is wound in multiple layers with the same diameter. Then, the computational load required for the analysis processing can be reduced.

  When the virtual model M is created, subsequently, the initial state calculation unit 54 calculates the force generated on the base material 9 before the start of the conveyance in the virtual model M (Step S4). In this calculation, the initial tension and the restoring force, ie, the stress and deformation (strain) generated in the base material 9 due to the bending by the roller 82 are calculated by using the finite element method before the conveyance is started. I do. FIG. 6 is a diagram showing a configuration near the roller 82 in the virtual model M. When the substrate 9 is curved, an elastic force is generated to return the substrate 9 to a flat state. That is, the base material 9 in the virtual model M has a flat state as a natural state. Accordingly, a restoring force F in a direction away from the roller 82 is generated at a portion of the base material 9 that contacts the roller 82, as indicated by an arrow in FIG. The initial state calculation unit 54 calculates the restoring force F generated at various places on the base material 9 in the initial state in this way, using the finite element method. The calculated restoring force F is stored in the storage unit 13.

  In addition, the initial state calculation unit 54 also calculates the initial tension generated at various parts of the base material 9 in the initial state. For example, with the rotation of the unwinding unit 81 fixed, the winding unit 83 is rotated by a predetermined amount to wind up the base material 9 by a predetermined amount, and the initial tension applied to the base material 9 before the transfer is calculated. I do. The calculated initial tension is stored in the storage unit 13.

  Thereafter, the user operates the input unit 40 to input a command to start the analysis process. Then, the transport state analyzing unit 55 virtually starts the transport of the substrate 9 in the virtual model M and analyzes the transport state of the substrate 9 (Step S5). Specifically, the movement of the base material 9 accompanying the rotation of the unwinding unit 81, the plurality of rollers 82, and the winding unit 83 is analyzed using a mechanism analysis and a finite element method. At this time, the restoring force F and the initial tension generated in the base material 9 in the initial state, which are calculated in step S4, are considered. Further, even after the start of the conveyance, a restoring force F is generated in a portion of the base material 9 that contacts the plurality of rollers 82. The transfer state analysis unit 55 analyzes the transfer state of the base material 9 in consideration of the restoring force F.

  As described above, the analysis device 1 analyzes the transport state of the base material 9 while considering the force generated in the base material 9 in the initial state. Thereby, the transport state of the long strip-shaped substrate can be accurately analyzed. In particular, in the analysis device 1 of the present embodiment, a three-dimensional model having not only the transport direction but also the width direction is created, and the transport state of the base material 9 is analyzed in the three-dimensional model. For this reason, the expansion and contraction of the base material 9 in the width direction and the meandering or skewed state of the base material 9 accompanying the conveyance can be analyzed.

<2. Modification>
As described above, one embodiment of the present invention has been described, but the present invention is not limited to the above embodiment.

  FIG. 7 is a diagram illustrating a modified example of the virtual model M created by the analysis device 1. In the virtual model M of FIG. 7, a characteristic change position 84 that changes the Young's modulus of the base material 9 is set in the middle of the transport path. In an ink jet printer, the Young's modulus of printing paper changes before and after ink is ejected. In addition, the Young's modulus of the printing paper changes before and after the ink is dried. In the virtual model M of FIG. 7, an analysis can be performed in consideration of such a change in the Young's modulus of the base material 9 during the conveyance. Note that, for example, the characteristic change position 84 may be set as one of the set values in the path setting unit 51 in step S1 described above. Further, a plurality of characteristic change positions 84 may be set on the transport path of the virtual model M. Further, a characteristic change position for changing a characteristic (for example, a coefficient of friction) other than the Young's modulus of the base material 9 may be set in the middle of the transport path.

  The analysis device of the present invention may analyze not only the conveyance of the printing paper but also the conveyance of a long strip-shaped base material such as a film, an electrolyte membrane for a chemical battery or a metal foil, and a thin glass plate.

  In addition, the elements appearing in the above-described embodiments and the modified examples may be appropriately combined as long as no contradiction occurs.

DESCRIPTION OF SYMBOLS 1 Analysis apparatus 9 Base material 9a Connection part 9b Winding part 10 Computer main body 11 Operation processing part 12 Memory 13 Storage part 20 Disk reading part 30 Display part 40 Input part 51 Path setting part 52 Substrate setting part 53 Model creation part 54 Initial state Calculation unit 55 Transport state analysis unit 81 Unwinding unit 82 Roller 83 Winding unit 84 Characteristic change position 810 Central axis D Storage medium F Restoring force M Virtual model P Computer program

Claims (19)

An analysis device for analyzing the transport state of the long strip-shaped substrate using a computer,
An unwinding unit that unwinds the substrate and a winding unit that winds the substrate, and a path setting unit that sets a transport path of the substrate including a plurality of rollers,
A base material setting section for setting the characteristics of the base material,
Based on the set values of the path setting unit and the base material setting unit, a model creating unit that creates a virtual model of the transfer device,
In the virtual model, an initial state calculation unit that calculates a force generated in the base material before the start of transport,
While using the force calculated by the initial state calculation unit, a transfer state analysis unit that analyzes the transfer state of the base material after the start of transfer,
With
The force which the conveying state analyzer is calculated, look including the initial tension generated on the substrate by the unwinding unit and the winding unit,
The virtual model is a three-dimensional model having a spread in the width direction perpendicular to the transport direction of the base material,
The analysis device , wherein the initial state calculation unit calculates a force generated on the base material in the transport direction and the width direction . A serial mounting of the analysis apparatus in claim 1,
An analyzer that sets the position, size, and rotation direction information for at least each of the plurality of rollers. The analysis device according to claim 1 or 2 , wherein:
An analyzer in which the path setting unit can additionally set error information to some set values. A analyzing apparatus according to any one of the claims 3 or claim 1,
An analysis apparatus, wherein the path setting unit is capable of setting a characteristic change position for changing a characteristic of a base material. A analyzing apparatus according to any one of the claims 4 or claims 1,
An analysis device for setting at least a thickness, a width, and a Young's modulus of the base material, wherein the base material setting unit is used. A analyzing apparatus according to any one of the claims 5 or claim 1,
An analysis apparatus in which the base material setting unit can additionally set error information to some set values. A analyzing apparatus according to any one of the claims 6 or claim 1,
The analysis device, wherein the initial state calculation unit calculates a restoring force generated in a portion of the base material that comes into contact with the roller by setting a substantially flat state to a natural state. A analyzing apparatus according to any one of the claims 7 or claim 1,
An analysis apparatus, wherein the transport state analysis unit analyzes a transport state of a substrate by a mechanism analysis, and calculates stress and deformation generated in the substrate, which is one element of the mechanism analysis, by a finite element method. A analyzing apparatus according to any one of until claims 1 to 8,
In at least one of the unwinding unit and the winding unit in the virtual model,
An analyzer in which the base material is wound multiple times with the same diameter. An analysis method for analyzing the transport state of the long strip-shaped substrate using a computer,
a) setting an unwinding unit for unwinding the base material, a winding unit for winding the base material, and a conveyance path of the base material including a plurality of rollers;
b) setting the properties of the substrate;
c) creating a virtual model of the transport device based on the set values of the steps a) and b);
d) calculating, in the virtual model, a force generated on the base material before the start of the transfer;
e) analyzing the transfer state of the base material after the start of transfer while using the force calculated in the step d);
Has,
Wherein the force step e) is calculated, see contains the initial tension generated on the substrate by the unwinding unit and the winding unit,
The virtual model is a three-dimensional model having a spread in a width direction perpendicular to the transport direction of the base material,
The analysis method, wherein the step d) includes a step of calculating a force generated on the substrate in the transport direction and the width direction . The analysis method according to claim 10 , wherein
In the step (a), an analysis method for setting at least information on a position, a size, and a rotation direction of each of the plurality of rollers. An analysis method according to claim 10 or claim 11 , wherein
An analysis method in which, in the step a), error information can be additionally set to some set values. The analysis method according to any one of claims 10 to 12 , wherein:
An analysis method for setting a characteristic change position at which the characteristic of the base material is changed in the step a). The analysis method according to any one of claims 10 to 13 , wherein:
In the step b), an analysis method for setting at least a thickness, a width, and a Young's modulus of the substrate. The analysis method according to any one of claims 10 to 14 , wherein:
In the step b), an analysis method in which error information can be additionally set to some set values. The analysis method according to any one of claims 10 to 15 , wherein
In the step (d), an analysis method for calculating a restoring force generated in a portion of the base material that comes into contact with the roller, with the substantially flat state as a natural state. The analysis method according to any one of claims 10 to 16 , wherein:
In the step e), an analysis method for analyzing a transport state of the base material using a finite element method. The analysis method according to any one of claims 10 to 17 , wherein
An analysis method in which the base material is wound multiple times with the same diameter in at least one of the unwinding portion and the winding portion in the virtual model. An analysis program which is executed by a computer to realize the analysis method according to any one of claims 10 to 18 .

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