JP2019142146A - Manufacturing device, manufacturing method, and manufacturing program of solid molded article - Google Patents

Abstract

To provide a manufacturing device of a solid molded article capable of detecting clogging of a waste solution pipe at an early stage before waste solution flows out of the waste solution pipe while suppressing increase of manufacturing cost.SOLUTION: A manufacturing device of a solid molded article includes: molding means for laminating molding layers composed of molding material to perform molding; a first waste solution storage container which temporarily stores waste solution composed of the molding material; a second waste solution storage container which stores the waste solution stored in the first waste solution storage container via a waste solution pipe; weight measurement means for measuring weight of the second waste solution storage container; and clogging detection means which detects clogging of the waste solution pipe due to the waste solution by comparing the weight of the second waste solution storage container in a state where the waste solution is stored in the first waste solution storage container with the weight of the second waste solution storage container after the waste solution is transferred from the first waste solution storage container to the second waste solution storage container.SELECTED DRAWING: Figure 6A

Description

  The present invention relates to a manufacturing apparatus, a manufacturing method, and a manufacturing program for a three-dimensional structure.

A material injection molding method (material jet method) modeling device is known as a device for modeling a three-dimensional modeled object (three-dimensional modeled object).
In this modeling apparatus, when forming a modeling layer, a smoothing member such as a roller for removing excess discharge material (model part forming material and support part forming material) in order to smooth the upper surface of the modeled layer It is known to provide
It is also known to perform maintenance such as a purge process for forcibly discharging the discharge material.
The waste liquid of the discharge material due to the smoothing member, the purge process or the like passes through the primary storage container that temporarily stores the waste liquid, and is then collected in the waste liquid storage container.

A three-dimensional modeling device that detects when the amount of accumulated waste liquid in a waste liquid tank, which is a waste liquid storage container, exceeds a certain amount, and detects clogging of a waste liquid pipe disposed at one end of the waste liquid tank with a pressure sensor. A three-dimensional modeling apparatus has been proposed (see, for example, Patent Document 1).
On the other hand, in an image recording apparatus that forms an image by discharging ink from an inkjet head to a recording medium, image recording that determines the leakage of a waste liquid pipe that sends waste liquid discharged during a purge process from an ink pan to a waste liquid tank A device has been proposed (see, for example, Patent Document 2).

  An object of the present invention is to provide an apparatus for manufacturing a three-dimensional structure that can detect clogging of a waste liquid pipe at an early stage before the waste liquid flows out from the waste liquid pipe while suppressing an increase in manufacturing cost.

Means for solving the problems are as follows. That is,
The manufacturing apparatus of the three-dimensional structure of the present invention
Modeling means for stacking modeling layers made of modeling materials and modeling;
A first waste liquid storage container for temporarily storing waste liquid made of the modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
Weight measuring means for measuring the weight of the second waste liquid storage container;
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detecting means for detecting clogging of the waste liquid pipe by the waste liquid by comparing the weight of the second waste liquid storage container;
It is characterized by having.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus of the three-dimensional molded item which can detect the clogging of a waste liquid pipe | tube before the waste liquid flows out from a waste liquid pipe | tube can be provided, suppressing the increase in manufacturing cost.

Drawing 1 is a mimetic diagram showing an example of the principal part front of the manufacturing device of a solid modeling thing. FIG. 2 is a schematic diagram illustrating an example of a configuration of a modeling layer for explaining a modeling procedure. Drawing 3 is a mimetic diagram showing an example of the important section plane of a manufacturing apparatus of a three-dimensional model. FIG. 4 is a schematic diagram illustrating an example of a side surface of a main part of the manufacturing apparatus for a three-dimensional structure. FIG. 5 is a block diagram for explaining a control unit of the manufacturing apparatus for a three-dimensional structure. FIG. 6A is a schematic diagram illustrating an example of a main part of a manufacturing apparatus for explaining clogging detection means of the manufacturing apparatus for a three-dimensional structure. FIG. 6B is a schematic diagram illustrating another example of the main part of the manufacturing apparatus for explaining the clogging detection means of the manufacturing apparatus for a three-dimensional structure. FIG. 7 is a flowchart illustrating an example of a processing procedure of a waste pipe clogging detection program in the three-dimensional structure manufacturing apparatus.

Since the discharge material is curable, there is a possibility that the hardened discharge material may be mixed into the transport path for transferring to the waste liquid storage container. Further, for reasons such as drying, the viscosity becomes high, and the solidified discharge material may be mixed into the conveyance path. When these solidified discharge materials are mixed in the transport path, the solidified discharge material adheres to the inner wall surface of the waste liquid pipe, and therefore the waste liquid pipe is clogged. As a result, a problem arises in that the pressure in the waste liquid pipe increases and the discharged material leaks from the joint portion.
Therefore, it is required to detect clogging of the waste liquid pipe before the waste liquid flows out of the waste liquid pipe.
However, in the technique described in Patent Document 1 listed in the background art section, it is necessary to separately provide a pressure sensor in order to detect clogging of the waste liquid pipe.
Further, in order to measure clogging of the waste liquid pipe by pressure, the path of the waste liquid pipe needs to be almost closed. For this reason, it is difficult for the technique described in Patent Document 1 to detect clogging of the waste liquid pipe at an early stage.
Furthermore, when the pressure is high enough to detect clogging with the pressure, there is a high possibility that the waste liquid leaks from the joint portion of the waste liquid pipe. A state where the waste liquid may leak is not preferable.
On the other hand, Patent Document 2 describes that the amount of waste liquid that has passed through the waste liquid pipe is compared with the amount of waste liquid discharged from the discharge port of the ink jet head during the purge process to determine the liquid leakage in the waste liquid pipe. Has been.
However, when the liquid leakage occurs in the waste liquid pipe, the above-mentioned Patent Document 2 is for determining whether or not the liquid leakage is present and to prevent the liquid leakage of the waste liquid pipe as in the present invention. It does not detect the degree of clogging that causes it before it occurs.
In the first place, in the above-mentioned Patent Document 2, the so-called “clogging” in the present invention in which waste liquid is stuck in the waste liquid pipe is not considered at all in detecting the amount of waste liquid.
[0015] of Patent Document 2 states that “after the sticking to the waste liquid pipe has been alleviated, the liquid discharge does not take into account the accumulated discharged waste liquid amount or the detected waste liquid amount during the past sticking. Judgment "is stated.
That is, in Patent Document 2, clogging and liquid leakage are treated as separate events that have nothing to do with each other, and in an inkjet image recording apparatus (2D apparatus) such as Patent Document 2, clogging of a waste liquid tube is a problem. I have not done it.
The clogging of the waste liquid pipe is an important problem in the manufacturing apparatus (3D apparatus) for a three-dimensional structure.
Therefore, the present inventor has repeatedly studied. As a result, in order to detect the clogging of the waste liquid pipe in the manufacturing apparatus (3D apparatus) of the three-dimensional structure early and reliably, and further to detect by a low-cost and simple mechanism apparatus that does not include a pressure sensor, the following configuration It has been found that the three-dimensional model manufacturing apparatus is effective.

(Manufacturing device, manufacturing method, manufacturing program for three-dimensional structure)
The manufacturing apparatus of the three-dimensional molded item of this invention has a modeling means which laminates | stacks the modeling layer which consists of modeling materials, and models.
Moreover, the manufacturing apparatus of the three-dimensional molded item of this invention has a 1st waste liquid storage container, a 2nd waste liquid storage container, a weight measurement means, and a clogging detection means. Here, the clogging detecting means transfers the weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid is transferred from the first waste liquid storage container to the second waste liquid storage container. This is a means for detecting clogging of the waste liquid pipe with the waste liquid by comparing the weight of the second waste liquid storage container after being done.
Furthermore, the manufacturing apparatus of the three-dimensional molded item of this invention may have another means as needed.
The manufacturing method of a three-dimensional modeled object of the present invention manufactures a three-dimensional modeled object using a manufacturing apparatus of a three-dimensional modeled object having at least a first waste liquid storage container, a second waste liquid storage container, and a weight measuring means. Manufacturing method.
The manufacturing method of the three-dimensional molded item of this invention includes the modeling process which laminates | stacks the modeling layer which consists of modeling materials, and models.
The manufacturing method of the three-dimensional structure of the present invention includes the weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the second waste liquid storage from the first waste liquid storage container. A clogging detecting step of detecting clogging of the waste liquid pipe by the waste liquid by comparing the weight of the second waste liquid storage container after being transferred to the container is included.
The manufacturing program for a three-dimensional object according to the present invention is a manufacturing program used for a manufacturing apparatus for a three-dimensional object having at least a first waste liquid storage container, a second waste liquid storage container, and a weight measuring unit.
The manufacturing program for a three-dimensional modeled object of the present invention causes a computer to execute a process of performing modeling by stacking modeling layers made of modeling materials.
The manufacturing program for a three-dimensional structure of the present invention includes the weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the second waste liquid storage from the first waste liquid storage container. By comparing the weight of the second waste liquid storage container after being transferred to the container, the computer is caused to execute a process of detecting clogging of the waste liquid pipe with the waste liquid.
Since the manufacturing apparatus of the three-dimensional modeled object of the present invention is synonymous with carrying out the manufacturing method of the three-dimensional modeled object of the present invention, the details of the manufacturing method of the present invention will be clarified through the description of the manufacturing apparatus of the present invention. . In addition, since the manufacturing program for a three-dimensional structure of the present invention is realized as a manufacturing apparatus for a three-dimensional structure of the present invention by using a computer or the like as a hardware resource, the present invention is described through the description of the manufacturing apparatus of the present invention. The details of the manufacturing program are also clarified.
Hereinafter, the manufacturing apparatus of the three-dimensional modeled object of the present invention includes a component part related to modeling means that is a basic component part of the modeling apparatus according to the material jetting method, and a component part related to clogging detection means that is one of the features of the present invention. This will be explained separately.

<Modeling means, modeling process>
The modeling means is means for performing modeling by stacking modeling layers made of modeling materials.
Specific contents of the modeling means are, for example, as follows. A liquid film made of a modeling material is formed, the formed liquid film is cured, and the formation and curing of the liquid film are repeated a plurality of times, thereby stacking the cured modeling layers to perform modeling.
Here, the modeling material includes, for example, a model part forming material and a support part forming material. A specific description of the model part forming material and the support part forming material will be described later.
The apparatus for manufacturing a three-dimensional structure of the present invention (also referred to as a modeling apparatus in the present specification) uses a material jetting method.
The manufacturing apparatus of the three-dimensional modeled object of this invention discharges the modeling material (model part formation material) which forms a three-dimensional modeled object to a modeling area | region, and discharges the support part formation material for shape support to area | regions other than a modeling area | region. Next, the model part forming material and the support part forming material are cured, and the layered model (modeling) including the model part modeling object in which the model part forming material is cured and the support part modeling object in which the support part forming material is cured. Layer), and sequentially stack the modeling layers. And the solid modeling thing which consists of a model part formation material is modeled by removing the modeling thing of a support part from the modeling thing formed by laminating | stacking.
In addition, when hardening modeling material, the hardening state does not need to be formed completely for every layer. For example, even if it is in a semi-cured state when UV irradiation is performed, curing proceeds as the layers are stacked, and it is only necessary that the modeling material is cured at the stage where the modeling objects have been stacked.

<< Embodiment of Manufacturing Apparatus for Solid Model >>
Hereinafter, specific embodiments of the manufacturing apparatus (modeling apparatus) of the present invention will be described.
Drawing 1 is a mimetic diagram showing an example of the principal part front of the manufacturing device of a solid modeling thing.
The three-dimensional modeling apparatus 10 is a material injection modeling apparatus, and the modeling layer 30 (30A to 30E) is stacked to form a three-dimensional modeled object, and the modeling layer 30 is sequentially stacked on the modeling stage 14. And a modeling unit 20 for modeling.
The modeling unit 20 includes a first discharge head 11 that discharges the model portion forming material, a second discharge head 12 that discharges the support portion forming material, a UV irradiation unit 13 that irradiates ultraviolet rays as active energy rays, A smoothing roller (also referred to as a flattening roller) 16 that is a smoothing member for smoothing the modeling layer 30 is provided.
Here, in the X direction, two second ejection heads 12 are arranged with the first ejection head 11 sandwiched therebetween, UV irradiation units 13 are respectively arranged outside the two second ejection heads 12, and A smoothing roller 16 is disposed outside the UV irradiation unit 13.
The modeling unit 20 is reciprocated in the X direction, and is movable relative to the modeling stage 14 in the Y direction.
The modeling stage 14 is lifted and lowered in the Z direction by the lifting means 15.
Next, an outline of a modeling operation by the three-dimensional modeling apparatus 10 will be described with reference to FIG.
FIG. 2 is a schematic diagram illustrating an example of a configuration of a modeling layer for explaining a modeling procedure. In FIG. 2, the droplet shape is shown as a rectangle for convenience.
While moving the modeling unit 20 in the X direction, the model portion forming material 301 is discharged from the first discharge head 11 to the modeling region (region constituting the three-dimensional modeled object), and the support portion forming material 302 is discharged from the second head 12. It is discharged to a support area (area to be removed after modeling) other than the modeling area.
Then, the UV irradiation unit 13 irradiates and cures the model part forming material 301 and the support part forming material 302 with ultraviolet rays, and includes a modeling layer for one layer including the modeled object 17 of the model part and the modeled object 18 of the support part. 30 is formed.
The modeling layer 30 is repeatedly modeled and sequentially laminated, and a target three-dimensional model formed of the model part forming material 301 is modeled while the model part forming material 301 is supported by the support part forming material 302.
For example, in the example of FIG. 1, the state which laminated | stacked five layers of modeling layer 30A-30E is shown. Moreover, in the example of FIG. 2, the state which laminated | stacked three layers of modeling layer 30A-30C is shown.

The surface of the discharged liquid layer of the modeling material is smoothed by a smoothing member such as a roller.
Here, every time the modeling layer 30 is stacked in a plurality of layers (not necessarily fixed values), for example, every 10 layers are stacked, the smoothing roller 16 is pressed against the modeling layer 30 on the outermost surface to be smoothed. Thus, the thickness accuracy and flatness of the modeling layer 30 can be ensured.
When a roller-shaped member such as the smoothing roller 16 is used as the smoothing member, the smoothing (flattening) is performed by rotating the smoothing roller 16 in a direction reverse to the moving direction in the X direction. Effect) is more effectively exhibited.
The modeling material adhering to the smoothing roller 16 is removed from the surface of the smoothing roller using a blade or the like. The waste liquid composed of the removed modeling material is stored in the primary storage tray and then collected in the waste liquid storage container. The primary storage tray and the waste liquid storage container will be described in detail in the following section <clogging detection means, clogging detection process>.
In order to keep the gap between the modeling unit 20 and the outermost modeling layer 30 constant, here, the modeling stage 14 is lowered by the elevating means 15 every time one modeling layer 30 is formed. In addition, the structure which raises the modeling unit 20 may be sufficient.
Further, the three-dimensional modeling apparatus 10 can include a mechanism for collecting and recycling the model part forming material 301 and the support part forming material 302.
In addition, a cleaning unit that cleans the nozzle surfaces of the first discharge head 11 and the second discharge head 12 and a discharge state detection unit that detects non-discharge nozzles can be provided. It is also preferable to control the environmental temperature in the apparatus during modeling.

Examples of the UV irradiation unit 13 include a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a metal halide, and an LED.
The ultra-high pressure mercury lamp is a point light source, but the Deep UV type, which has high light utilization efficiency in combination with an optical system, can irradiate in a short wavelength region.
Metal halides are effective for colored materials because of their wide wavelength range, and metal halides such as Pb, Sn, and Fe are used and can be selected according to the absorption spectrum of the polymerization initiator.
There is no restriction | limiting in particular as a lamp | ramp used for hardening, According to the objective, it can select suitably, For example, commercial items, such as H lamp, D lamp, and V lamp made from Fusion System, etc. can be used.

Drawing 3 is a mimetic diagram showing an example of the important section plane of a manufacturing apparatus of a three-dimensional model. FIG. 4 is a schematic diagram illustrating an example of a side surface of a main part of the manufacturing apparatus for a three-dimensional structure.
In the three-dimensional modeling apparatus 10, the unit holder 21 of the modeling unit 20 is movably held by guide members 54 and 55 arranged in the X direction.
A maintenance mechanism 61 that performs maintenance and recovery of the ejection heads 11 and 12 is disposed on one side of the modeling unit 20 in the X direction.
The maintenance mechanism 61 is mainly composed of a cap 62 and a wiper 63. The cap 62 is brought into close contact with the nozzle surfaces (surfaces on which the nozzles are formed) of the ejection heads 11 and 12, and the modeling material is sucked from the nozzles. This is to discharge the highly viscous modeling material clogged in the nozzle. Thereafter, the nozzle surface is wiped (wiped) with the wiper 63 to form a meniscus of the nozzle (the inside of the nozzle is in a negative pressure state). In addition, the maintenance mechanism 61 may cover the nozzle surface of the discharge head with a cap 62 so that the modeling material can be smoothly discharged, thereby preventing the modeling material from being solidified by drying and the modeling material liquid from being cured by light. it can.

The guide members 54 and 55 holding the unit holder 21 of the modeling unit 20 are held by the side plates 70 and 70 on both sides. The side plates 70, 70 have a slider portion 72 movably held by a guide member 71 disposed on the base member 7, and the modeling unit 20 can reciprocate in the Y direction orthogonal to the X direction.
The stage 14 is lifted and lowered in the Z direction by the lifting means 15. The elevating means 15 is movably disposed on the guide members 75 and 76 disposed in the X direction on the base member 7.

  A modeling material is supplied to the first ejection head 11 via a supply tube or the like by a cartridge 60 that is replaceably mounted on the cartridge mounting portion 56. Note that when a color modeling material such as black, cyan, magenta, and yellow is used, a plurality of nozzle rows that eject droplets of each color can be arranged on the first ejection head 11.

Next, an outline of the control unit of the three-dimensional modeling apparatus will be described with reference to FIG. FIG. 5 is a block diagram for explaining a control unit of the three-dimensional modeling apparatus 10.
The control unit 500 includes a CPU 501 that controls the entire apparatus, a 3D modeling program that includes a program for causing the CPU 501 to execute a 3D modeling operation including control according to the present invention, and a ROM 502 that stores other fixed data. A main control unit 500A including a RAM 503 for temporarily storing modeling data and the like.
The control unit 500 includes a non-volatile memory (NVRAM) 504 for holding data even when the apparatus is powered off. Further, the control unit 500 includes an ASIC 505 that processes image processing for performing various signal processing on image data and other input / output signals for controlling the entire apparatus.
The control unit 500 includes an I / F 506 for transmitting and receiving data and signals used when receiving modeling data from the external modeling data creating apparatus 600.
In FIG. 5, a modeling data creation device 600 is a device that creates modeling data (cross-sectional data) that is slice data obtained by slicing a final modeled object (three-dimensional modeled object) for each modeling layer, such as a personal computer. It consists of an information processing device.
The control unit 500 includes an I / O 507 for taking in detection signals of various sensors.
The control unit 500 includes a head drive control unit 508 that drives and controls the first ejection head 11 of the modeling unit 20 and a head drive control unit 509 that drives and controls the second ejection head 12.
The control unit 500 moves the modeling unit 20 in the Y direction (sub-scanning direction), and a motor driving unit 510 that drives a motor that configures the X-direction scanning mechanism 550 that moves the modeling unit 20 in the X direction (main scanning direction). A motor drive unit 511 that drives a motor that constitutes the Y-direction scanning mechanism 552 is provided.
The control unit 500 includes a motor driving unit 512 that drives a motor that constitutes the lifting unit 15 that moves the modeling stage 14 up and down in the Z direction. In addition, raising / lowering to a Z direction can also be set as the structure which raises / lowers the modeling unit 20. As shown in FIG.
The control unit 500 includes a motor driving unit 516 that drives the motor 26 that rotationally drives the smoothing roller 16, and a maintenance driving unit 518 that drives the maintenance mechanism 61 of the first ejection head 11 and the second ejection head 12. Yes.
The control unit 500 includes a curing control unit 519 that controls ultraviolet irradiation by the UV irradiation unit 13.
The I / O 507 of the control unit 500 receives detection signals from the temperature / humidity sensor 560 that detects temperature and humidity as environmental conditions of the apparatus, and detection signals from other sensors.
An operation panel 522 for inputting and displaying information necessary for this apparatus is connected to the control unit 500.
As described above, the control unit 500 receives modeling data from the modeling data creation device 600. The control unit 500 is driven to model a three-dimensional modeled object according to the input modeling data. Thereby, in the three-dimensional modeling apparatus 10, a desired three-dimensional model is modeled.

  Examples of the model part forming material and the support part forming material include those described below.

<< Model part forming material >>
The model part forming material can form a part constituting the model part.
In this invention, a model part means the part which comprises the main body which models a three-dimensional molded item.

The model part forming material is not particularly limited as long as it is a liquid that is cured by applying energy such as light and heat, and can be appropriately selected according to the purpose. The model part forming material preferably contains a polymerizable monomer such as a monofunctional monomer or a polyfunctional monomer, an oligomer, or a photopolymerization initiator, and further contains other components as necessary.
The model part forming material preferably has liquid properties such as viscosity and surface tension that can be discharged by a modeling material discharge head used in an inkjet printer or the like.

<< Support part forming material >>
The support part forming material can form a part constituting the support part.
In the present invention, the support portion is disposed in a portion supporting the model portion in the gravitational direction in order to hold the three-dimensional structure in a predetermined position until the model portion is solidified, and is in contact with the model portion. It means the part that supports the model part from below.

  The support part forming material is a liquid that is cured by applying energy such as light or heat, and is not particularly limited as long as the cured product obtained by curing the liquid is a material that collapses when immersed in a solvent. However, from the viewpoint of removal cost, the cured product is preferably water-disintegrating. Specifically, the support part forming material preferably includes a monomer (A) having hydrogen bonding ability, a solvent (B) having hydrogen bonding ability, and a photopolymerization initiator (D), and further a hydrogen bonding polymer. (C) may be included, and other components (E) may be further included as necessary.

-Monomer (A) having hydrogen bonding ability-
The monomer (A) having hydrogen bonding ability is not particularly limited as long as it has hydrogen bonding ability, and can be appropriately selected according to the purpose. For example, polymerization that undergoes radical polymerization by irradiation with active energy rays such as ultraviolet rays. And monofunctional monomers and polyfunctional monomers having properties. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the monomer (A) having hydrogen bonding ability include monomers having an amide group, amino group, hydroxyl group, tetramethylammonium group, silanol group, epoxy group, sulfo group, and the like.

  Examples of the polymerization reaction of the monomer (A) having hydrogen bonding ability include radical polymerization, ionic polymerization, coordination polymerization, and ring-opening polymerization. Among these, radical polymerization is preferable from the viewpoint of controlling the polymerization reaction. Therefore, the monomer (A) having hydrogen bonding ability is preferably an ethylenically unsaturated monomer, more preferably a water-soluble monofunctional ethylenically unsaturated monomer or a water-soluble polyfunctional ethylenically unsaturated monomer, and water of a cured product. From the viewpoint of improving disintegration, a water-soluble monofunctional ethylenically unsaturated monomer is particularly preferable.

--Water-soluble monofunctional ethylenically unsaturated monomer having hydrogen bonding ability--
The water-soluble monofunctional ethylenically unsaturated monomer having hydrogen bonding ability is not particularly limited and may be appropriately selected depending on the purpose. For example, a monofunctional vinylamide group-containing monomer [N-vinyl-ε-caprolactam, N-vinylformamide, N-vinylpyrrolidone and the like]; monofunctional hydroxyl group-containing (meth) acrylate [hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate etc.]; hydroxyl group-containing (meta ) Acrylate [polyethylene glycol mono (meth) acrylate, monoalkoxy (C1-4) polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, monoalkoxy (C1-4) polypropylene glycol mono (meta Acrylate, mono (meth) acrylate of PEG-PPG block polymer, etc.]; (meth) acrylamide derivatives [(meth) acrylamide, N-methyl (meth) acrylamide, N-ethyl (meth) acrylamide, N-propyl (meth) acrylamide N-butyl (meth) acrylamide, N, N′-dimethyl (meth) acrylamide, N-hydroxyethyl (meth) acrylamide, N-hydroxypropyl (meth) acrylamide, N-hydroxybutyl (meth) acrylamide and the like], ( And (meth) acryloylmorpholine. These may be used individually by 1 type and may use 2 or more types together.
Among these, from the viewpoint of photoreactivity, monofunctional hydroxyl group-containing (meth) acrylate, hydroxyl group-containing (meth) acrylate, and (meth) acrylamide derivatives are preferable. Hydroxyethyl acrylate, hydroxypropyl acrylate, 4-hydroxybutyl acrylate, acrylamide, acryloylmorpholine, N-methylacrylamide, N-ethylacrylamide, N-propylacrylamide, N-butylacrylamide, N, N′-dimethylacrylamide, N-hydroxy Ethyl acrylamide, N-hydroxypropyl acrylamide, N-hydroxybutyl acrylamide, and diethyl acrylamide are more preferable. From the viewpoint of low skin irritation to the human body, acryloylmorpholine (molecular weight: 141.17) and N-hydroxyethylacrylamide (molecular weight: 115.15) are particularly preferred.

--Water-soluble polyfunctional ethylenically unsaturated monomer having hydrogen bonding ability--
The water-soluble polyfunctional ethylenically unsaturated monomer having hydrogen bonding ability is not particularly limited and can be appropriately selected depending on the purpose. For example, water-soluble difunctional ethylenically unsaturated monomer, water-soluble trifunctional ethylene Unsaturated unsaturated monomers.
There is no restriction | limiting in particular as a water-soluble bifunctional ethylenically unsaturated monomer, According to the objective, it can select suitably, For example, a tripropylene glycol di (meth) acrylate, a triethylene glycol di (meth) acrylate, tetraethylene Glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, neopentyl glycol hydroxypivalate ester di (meth) acrylate, hydroxypivalate neopentyl glycol ester di (meth) acrylate, 1,3-butanediol di (meth) Acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, diethylene glycol di (meth) acrylate , Neopentyl glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, caprolactone-modified hydroxypivalic acid neopentyl glycol ester di (meth) acrylate, propoxylated opentyl glycol di (meth) acrylate, polyethylene glycol 200 Examples include di (meth) acrylate and polyethylene glycol 400 di (meth) acrylate.
The water-soluble trifunctional ethylenically unsaturated monomer is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include triallyl isocyanate and tris (2-hydroxyethyl) isocyanurate tri (meth) acrylate. Can be mentioned. These may be used individually by 1 type and may use 2 or more types together.

  The molecular weight of the monomer (A) having hydrogen bonding ability is preferably 70 or more and 2,000 or less, and more preferably 100 or more and 500 or less. When the molecular weight is 70 or more and 2,000 or less, the viscosity can be adjusted to be optimal for the ink jet system.

  As content of the monomer (A) which has hydrogen bonding ability, 30 mass% or more and 60 mass% or less are preferable with respect to the support part formation material whole quantity. When the content is 30% by mass or more and 60% by mass or less, sufficient compressive stress and water disintegration can be achieved as a support part for supporting the shape of the model part.

-Solvent (B) having hydrogen bonding ability-
The solvent (B) having hydrogen bonding ability has a hydrogen bonding ability with the monomer (A) having hydrogen bonding ability, and forms a hydrogen bond with the monomer (A) having hydrogen bonding ability, thereby supporting the shape support. The function of the part can be demonstrated.

The solvent (B) having a hydrogen bonding ability is not particularly limited as long as it is a solvent having a hydrogen bonding ability, and can be appropriately selected according to the purpose. Examples thereof include diols having 3 to 6 carbon atoms, carboxylic acid compounds, amine compounds, ester compounds, ketone compounds, urea compounds and the like. These may be used individually by 1 type and may use 2 or more types together.
Among these, a diol having 3 to 6 carbon atoms is preferable.

--Diol having 3 to 6 carbon atoms--
The diol having 3 to 6 carbon atoms has no reactivity with the water-soluble acrylic monomer, does not inhibit the radical polymerization reaction at the time of curing, is fluid at room temperature, and is a water-soluble material. Is preferred. Further, as the diol having 3 to 6 carbon atoms, both monofunctional and polyfunctional can be used.
The diol having 3 to 6 carbon atoms is not particularly limited and may be appropriately selected depending on the purpose. For example, propanediol, butanediol, pentanediol, hexanediol and the like can be mentioned. These may be used individually by 1 type and may use 2 or more types together.
Among these, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol are preferable.

The diol having 3 to 6 carbon atoms has 3 to 6 carbon atoms, preferably 3 to 5 carbon atoms. When the number of carbon atoms is 3 or more, the compressive stress during 1% compression can be improved in an environment of 25 ° C. When the carbon number is 6 or less, the viscosity of the support portion forming material can be lowered.
The carbon chain of the diol having 3 to 6 carbon atoms may be linear or branched.

--Carboxylic acid compound--
There is no restriction | limiting in particular as a carboxylic acid compound, According to the objective, it can select suitably, For example, a linear aliphatic carboxylic acid, branched-chain aliphatic carboxylic acid, aromatic carboxylic acid, hydroxycarboxylic acid etc. are mentioned. .
Examples of the linear aliphatic carboxylic acid include formic acid, acetic acid, propionic acid, butanoic acid, pentanoic acid, hexyl acid and the like.
Examples of the branched aliphatic carboxylic acid include isobutyric acid, t-butyric acid, isopentylic acid, isooctylic acid, 2-ethylhexylic acid, and the like.
Examples of the aromatic carboxylic acid include benzoic acid and benzenesulfonic acid.
Examples of the hydroxycarboxylic acid include glycolic acid and lactic acid.
These may be used individually by 1 type and may use 2 or more types together. Among these, from the viewpoint of solubility in water, acetic acid, propionic acid, butanoic acid, and lactic acid are preferable, and butanoic acid and lactic acid are more preferable.

--Amine compound--
There is no restriction | limiting in particular as an amine compound, According to the objective, it can select suitably, For example, monovalent | monohydric primary-tertiary amine, bivalent primary amine, trivalent primary amine, aliphatic amine Etc.
Examples of monovalent primary to tertiary amines include monoalkylamines, dialkylamines, and trialkylamines.
Examples of the divalent primary amine include ethylenediamine.
Examples of the trivalent primary amine include triethylenediamine.
Examples of the aliphatic amine include pyridine and aniline.
These may be used individually by 1 type and may use 2 or more types together. Among these, a divalent primary amine and a trivalent primary amine are preferable, and ethylenediamine is more preferable from the viewpoint of crosslinking strength due to hydrogen bonding and solubility in water.

--Ester compound--
There is no restriction | limiting in particular as an ester compound, According to the objective, it can select suitably, For example, monofunctional ester, polyfunctional aliphatic ester, polyfunctional aromatic ester etc. are mentioned.
Examples of the monofunctional ester include ethyl acetate, butyl acetate, and ethyl propionate.
Examples of the polyfunctional aliphatic ester include dimethyl succinate and dimethyl adipate.
Examples of the polyfunctional aromatic ester include dimethyl terephthalate.
These may be used individually by 1 type and may use 2 or more types together. Among these, dimethyl adipate is preferable from the viewpoints of solubility in water, evaporation and odor during three-dimensional modeling, and safety.

-Ketone compound-
There is no restriction | limiting in particular as a ketone compound, According to the objective, it can select suitably, For example, a monofunctional ketone, a polyfunctional ketone, etc. are mentioned.
Examples of the monofunctional ketone include acetone and methyl ethyl ketone.
Examples of the polyfunctional ketone include acetylacetone and 2,4,6-heptatrione.
These may be used individually by 1 type and may use 2 or more types together. Among these, acetylacetone is preferable from the viewpoints of volatility and solubility in water.

  As content of the solvent (B) which has hydrogen bonding ability, 10 mass% or more and 50 mass% or less are preferable with respect to the support part formation material whole quantity. When the content is 10% by mass or more and 50% by mass or less, sufficient compressive stress and water disintegration can be achieved as a support part for supporting the shape of the model part.

-Hydrogen bonding polymer (C)-
The hydrogen bonding polymer (C) is a material that is not reactive with water-soluble acrylic monomers, does not inhibit radical polymerization reaction during photocuring, has fluidity at room temperature, and is soluble in water. Is preferred.

There is no restriction | limiting in particular as a hydrogen bondable polymer (C), According to the objective, it can select suitably, For example, an active hydrogen compound etc. are mentioned.
There is no restriction | limiting in particular as an active hydrogen compound, According to the objective, it can select suitably, For example, a monofunctional compound, a polyfunctional compound, etc. are mentioned.
Examples of the monofunctional compound include alcohol, ether, amide, ester and the like.

Specific examples of the active hydrogen compound include alkylene oxide adducts, monovalent to tetravalent alcohols, and amine compounds. Among these, alkylene oxide adducts and monovalent to divalent alcohols are preferred.
Examples of the alkylene oxide adduct include polypropylene glycol, polyethylene glycol, and polypropylene glycol monobutyl ether.

-Photopolymerization initiator (D)-
As the photopolymerization initiator (D), any substance that generates radicals upon irradiation with light (particularly, ultraviolet light having a wavelength of 220 nm to 400 nm) can be used, and a photopolymerization initiator that matches the ultraviolet wavelength of the ultraviolet irradiation device is used. It is preferable to select.
Examples of the photopolymerization initiator (D) include acetophenone, 2,2-diethoxyacetophenone, p-dimethylaminoacetophenone, benzophenone, 2-chlorobenzophenone, p, p′-dichlorobenzophenone, p, p-bisdiethylaminobenzophenone. , Michler's ketone, benzyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin-n-propyl ether, benzoin isobutyl ether, benzoin-n-butyl ether, benzyl methyl ketal, thioxanthone, 2-chlorothioxanthone, 2-hydroxy 2-methyl-1-phenyl-1-one, 1- (4-isopropylphenyl) 2-hydroxy-2-methylpropan-1-one, methylbenzoyl Formate, 1-hydroxycyclohexyl phenyl ketone, azobisisobutyronitrile, benzoyl peroxide, di-tert-butyl peroxide and the like can be mentioned. These may be used individually by 1 type and may use 2 or more types together.

  As content of a photoinitiator (D), 0.5 mass% or more and 10 mass% or less are preferable with respect to the support part formation material whole quantity.

-Other components (E)-
There is no restriction | limiting in particular as another component, According to the objective, it can select suitably, For example, surfactant, a polymerization inhibitor, a coloring agent etc. are mentioned.

The viscosity of the support portion forming material is 100 mPa · s or less at 25 ° C., preferably 3 mPa · s or more and 70 mPa · s or less, more preferably 6 mPa · s or more and 50 mPa · s or less at 25 ° C. When the viscosity is 100 mPa · s or less, ejection stability can be improved.
The viscosity can be measured in a 25 ° C. environment using, for example, a rotational viscometer (VISCOMATE VM-150III, manufactured by Toki Sangyo Co., Ltd.).

The viscosity change rate of the support portion forming material is preferably ± 20% or less, more preferably ± 10% or less before and after being left at 50 ° C. for 2 weeks. When the viscosity change rate is ± 20% or less, the storage stability is appropriate and the ejection stability is good.
The viscosity change rate before and after leaving at 50 ° C. for 2 weeks can be measured as follows.
The support part forming material is put in a polypropylene wide-mouth bottle (50 mL), left in a thermostatic bath at 50 ° C. for 2 weeks, then taken out from the thermostatic bath and left to reach room temperature (25 ° C.) to measure the viscosity. Do. The viscosity of the support portion forming material before being put into the thermostatic bath is the viscosity before storage, and the viscosity of the support portion forming material after being taken out from the thermostatic bath is the viscosity after storage, and the viscosity change rate is calculated by the following formula. The pre-storage viscosity and the post-storage viscosity can be measured at 25 ° C. using, for example, an R-type viscometer (manufactured by Toki Sangyo Co., Ltd.).
Viscosity change rate (%) = [(viscosity after storage) − (viscosity before storage)] / (viscosity before storage) × 100

<Clogging detection means, clogging detection process>
The manufacturing apparatus of the three-dimensional molded item of this invention has a clogging detection means. Further, in order to execute the clogging detection means, the three-dimensional structure manufacturing apparatus of the present invention includes a first waste liquid storage container, a second waste liquid storage container, and a weight measurement means.
Furthermore, the manufacturing apparatus of the three-dimensional molded item of this invention may have the transfer means which transfers the waste liquid accommodated in the 1st waste liquid storage container to a 2nd waste liquid storage container as a preferable aspect.
In the present specification, the waste liquid refers to a modeling material that is discarded without being used for modeling other than the modeling material that is actually used for modeling as a modeled object. The waste liquid is a modeling material stored in a waste liquid storage container for the purpose of being discarded.
The apparatus for manufacturing a three-dimensional structure according to the present invention includes clogging detection means, so that clogging due to the waste liquid in the waste liquid pipe can be detected at an early stage.

  Hereinafter, the first waste liquid storage container, the second waste liquid storage container, the weight measurement means, the clogging detection means, and the transfer means will be described in detail.

<< First waste liquid storage container and second waste liquid storage container >>
The first waste liquid storage container is a container that temporarily stores a waste liquid made of a modeling material.
A plurality of first waste liquid storage containers may exist in the three-dimensional modeling apparatus. For example, as the first waste liquid storage container, there is a container for storing the waste liquid recovered by the roller which is a smoothing member, or a container for storing the waste liquid recovered during maintenance such as purge processing. .
The second waste liquid storage container is a container for accumulating the waste liquid stored in the first waste liquid storage container through the waste liquid pipe.
Here, the waste liquid pipe is a pipe for connecting the first waste liquid storage container and the second waste liquid storage container.

<< Weight measuring means >>
The weight measuring means is means for measuring the weight of the second waste liquid storage container.
Examples of the weight measuring means include a load cell.

<< Clogging detection means >>
The clogging detection means includes the weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid is transferred from the first waste liquid storage container to the second waste liquid storage container. This is a means for detecting clogging of the waste liquid pipe with the waste liquid by comparing the weight of the second waste liquid storage container.
The clogging detection means is used when the waste liquid is stored in the first waste liquid storage container (this case is also referred to as “before waste liquid transfer”) and after it is transferred to the second waste liquid storage container (in this case). The weight of the second waste liquid storage container in “after waste liquid transfer”) is compared.
More specifically, the clogging detection means compares the weights of the second waste liquid storage containers before and after transferring the waste liquid, so that the difference between these weights is larger or smaller than a preset threshold value. Determine.
If it is larger than the threshold value, no clogging has occurred, and if it is smaller than the threshold value, it is determined that clogging has occurred.
Here, the threshold value refers to a value arbitrarily set by an operator or user from the amount of waste liquid stored in the first waste liquid storage container before the waste liquid transfer, for example.

When there are a plurality of first waste liquid storage containers, there may be a plurality of waste liquid tubes corresponding to the respective first waste liquid storage containers.
When there are a plurality of first waste liquid storage containers, the weight of the second waste liquid storage container can be measured for each first waste liquid storage container. In that case, the clogging of the waste liquid pipe corresponding to each first waste liquid storage container can be determined.

The manufacturing apparatus of the three-dimensional molded item of this invention may have a notification means and a recording means further.
The notification means is means for notifying an operator or user of the clogging when the waste liquid pipe is clogged. As a result of comparing the weight of the second waste liquid storage container before and after the waste liquid transfer, if it is determined that the difference between these weights is smaller than the preset value, it is notified that the waste liquid pipe is clogged. To do.
Here, there is no restriction | limiting in particular as a notification means, You may notify by a display, you may notify by a sound and a sound, and any method may be sufficient as it.
The recording means includes the weight of the second waste liquid storage container in a state in which the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container. It is means for recording the weight of the second waste liquid storage container.

<< Transportation means >>
As above-mentioned, the manufacturing apparatus of the three-dimensional molded item of this invention may have a transfer means as a preferable aspect.
The transfer means is means for transferring the waste liquid stored in the first waste liquid storage container to the second waste liquid storage container through the waste liquid pipe.
As a transfer means, a pump etc. are mentioned, for example. As the pump, a tubing pump, a piston pump, a diaphragm pump, or the like can be used.

By having the transfer means, for example, in the clogging detection means, when measuring the weight of the second waste liquid storage container before and after the waste liquid transfer, the measurement timing can be set and adjusted according to the operation of the transfer means. it can.
Specifically, the clogging detection means includes the weight of the second waste liquid storage container in a state where the waste liquid is stored in the first waste liquid storage container before the operation of the transfer means, and the operation of the transfer means. The weight of the second waste liquid storage container after the waste liquid has been transferred from the first waste liquid storage container to the second waste liquid storage container can be compared.

Furthermore, it is more preferable that the transfer means operate at the following operation timing.
As a preferred embodiment, for example, the transfer means is set so that it does not operate until a predetermined amount of waste liquid is stored in the first waste liquid storage container and operates when the waste liquid exceeds a predetermined amount. It is mentioned that. This is because if the amount of waste liquid stored in the first waste liquid storage container is small, erroneous detection may occur when measuring the weight of the second waste liquid storage container. Therefore, even when the amount of waste liquid stored in the first waste liquid storage container is small at one time, the system waits until a sufficient amount of waste liquid is stored. Thereafter, by transferring the waste liquid to the second waste liquid storage container, it is possible to prevent the possibility of erroneous detection in measuring the weight of the second waste liquid storage container.
Further, for example, the transfer means may be set to operate when the number of purge processes exceeds a predetermined number. This is because if the amount of waste liquid stored in the first waste liquid storage container is small, erroneous detection may occur when measuring the weight of the second waste liquid storage container. Therefore, the maintenance operation is performed a plurality of times, a sufficient amount of waste liquid is stored in the first waste liquid storage container, and then the waste liquid is transferred to the second waste liquid storage container, so that the weight of the second waste liquid storage container It is possible to prevent the possibility of erroneous detection in the measurement.

Furthermore, it is preferable that the weight measuring means is operated at the following operation timing in conjunction with the operation of the transfer means.
As a preferred embodiment, for example, the weight measuring unit is configured such that the weight measuring unit does not perform measurement by the weight measuring unit while the transfer unit is in operation, and performs measurement of the weight measuring unit after the operation of the transfer unit is stopped. The measurement timing is set. For example, during driving of a pump that is a transfer means, the weight may not be accurately measured by a load cell that is a weight measurement means due to drive vibration. In order to prevent a weight measurement error due to the pulsation, it is preferable to stop the pump and wait for the vibration to converge before measuring the weight of the second waste liquid storage container.
In addition, for example, the measurement timing of the weight measuring unit is set so that the weight measuring unit performs the measurement of the weight measuring unit after operating the transfer unit a plurality of times.
For example, when the modeled object is small and the waste liquid collected by the smoothing roller as the smoothing member is small, the following may occur. That is, the resolution is lower than the resolution measurable by the load cell as the weight measuring means, and the clogging of the waste liquid does not actually occur. However, since the amount recovered as the waste liquid is small, it may be detected as clogging. Therefore, in order to prevent erroneous detection, the pump is driven for the number of times that the amount exceeding the resolution of the load cell is transported, and the weight of the second waste liquid storage container is measured after sufficiently transferring the waste liquid to the second waste liquid storage container. Good.

<< Embodiment of 3D modeling apparatus having clogging detection means >>
Hereinafter, a specific embodiment of the manufacturing apparatus (modeling apparatus) of the present invention having clogging detection means will be described.
FIG. 6A is a schematic diagram illustrating an example of a main part of a three-dimensional modeling apparatus having clogging detection means.
FIG. 6B is a schematic diagram illustrating another example of the main part of the three-dimensional modeling apparatus having clogging detection means.
The difference between the three-dimensional modeling apparatus of FIG. 6A and FIG. 6B is whether the transfer means is provided.
In FIG. 6A, 11 is the 1st discharge head which discharges a model part formation material. Reference numeral 12 denotes a second discharge head for discharging the support portion forming material. Reference numeral 13 denotes a light source for irradiating ultraviolet rays for curing the discharged material.
Reference numeral 16 denotes a smoothing roller for smoothing the surface of the discharged material. As the smoothing roller 16 rotates, the model portion forming material and the support portion forming material adhere to the roller surface.
Reference numeral 41 denotes a blade that removes the modeling material adhering to the smoothing roller 16 from the surface of the smoothing roller. Waste liquid adhering to the surface of the smoothing roller 16 is separated from the smoothing roller 16 and stored in a waste liquid tray (also referred to as a primary storage tray in this specification), which is a first waste liquid storage container 42.
Reference numeral 43 denotes a suction port for sucking the discharged material in the waste liquid tray 42. In order to prevent the waste liquid stored in the waste liquid tray 42 from accumulating and overflowing from the waste liquid tray 42, the waste liquid is sucked from the suction port 43 periodically or at a timing set by an operator or user.
Reference numeral 49 denotes a second waste liquid storage container that accommodates the waste liquid collected from the first waste liquid storage container.
Reference numeral 50 denotes waste liquid stored in the second waste liquid storage container 49. The waste liquid in the second waste liquid storage container 49 is discarded outside the modeling apparatus at an appropriate timing.
A load cell 51 is a weight measuring unit for measuring the weight of the second waste liquid storage container 49.
Reference numeral 47 denotes a first waste liquid storage container for temporarily accumulating waste liquid discharged from the first discharge head 11 and the second discharge head 12 by performing maintenance such as purge processing. In order to prevent clogging of the discharge material, the head performs a maintenance operation to prevent clogging of the head by discharging at a timing set by the operator or the user periodically or during modeling before and during modeling of the three-dimensional model. Do. Examples of the maintenance process include a purge process and a wiping process.
46 is a waste liquid stored in the first waste liquid storage container 47.
Reference numeral 45 denotes a light shielding plate provided in the first waste liquid storage container 47. The waste liquid 46 stored in the first waste liquid storage container 47 may be cured when exposed to the ultraviolet rays irradiated from the light source 13. Therefore, when the light source 13 irradiates ultraviolet rays, it is preferable to cover the upper part of the first waste liquid storage container 47 with the light shielding plate 46 in order to prevent the waste liquid 46 from being cured.
Furthermore, in the three-dimensional modeling apparatus shown by FIG. 6B, the transfer means is provided.
In FIG. 6B, reference numeral 44 denotes a pump of transfer means for transporting the waste liquid from the first waste liquid storage container 42 to the second waste liquid storage container 49.
Reference numeral 48 denotes a pump of transfer means for conveying the waste liquid from the first waste liquid storage container 47 to the second waste liquid storage container 49.

<< Detection sensitivity of clogging detection means >>
An experiment for confirming the clogging detection sensitivity of the waste liquid pipe by the clogging detection means was performed using the manufacturing apparatus for a three-dimensional structure having the clogging detection means of the present invention.
As a result, the results shown in Table 1 below were obtained. In Table 1, when the clogging can be detected, it is indicated by ◯, and when the clogging cannot be detected by ×.

From Table 1, when the flow rate of the waste liquid flowing through the waste liquid pipe is reduced, it is possible to detect that clogging has started to occur at an early stage by using the clogging detecting means of the present invention.
On the other hand, if you try to detect clogging of the waste liquid pipe by measuring the pressure in the waste liquid pipe, it will detect when the pressure in the waste liquid pipe becomes higher than a certain level. Can not.
Therefore, if the apparatus for manufacturing a three-dimensional structure having the clogging detecting means of the present invention is used, clogging of the waste liquid pipe can be detected at an early stage.

<< Method for detecting clogging of waste liquid pipe and detection program >>
Using the clogging detection means described above, clogging due to waste liquid in the waste liquid pipe can be detected.
The clogging detection method of the waste liquid pipe includes a clogging detection step of detecting clogging due to the waste liquid in the waste liquid pipe in the three-dimensional object manufacturing apparatus by comparing the weight of the second waste liquid storage container before and after the waste liquid transfer. .
The clogging detection program for a waste liquid pipe causes a clogging detection method for a waste liquid pipe to be executed in the three-dimensional object manufacturing apparatus of the present invention by using a computer or the like as a hardware resource.
The processing by the waste pipe clogging detection program can be executed using a computer having the control unit 500 constituting the three-dimensional modeling apparatus 10 described above.

  Next, the processing procedure of the waste pipe clogging detection program will be shown. FIG. 7 is a flowchart illustrating an example of a processing procedure of a waste pipe clogging detection program in the control unit 500 of the three-dimensional modeling apparatus 10.

In step S101, the control unit 500 of the three-dimensional modeling apparatus 10 measures the weight A of the second waste liquid storage container in a state where the waste liquid before the waste liquid transfer is accommodated in the first waste liquid storage container, and the process proceeds to S102. To do.
In step S102, the control part 500 memorize | stores the measurement result (measurement data) of the measured weight A of the 2nd waste liquid storage container in the memory | storage part of the three-dimensional model | molding apparatus 10, and transfers a process to S103.
In step S103, the control unit 500 of the three-dimensional modeling apparatus 10 detects that the waste liquid is transferred from the first waste liquid storage container to the second waste liquid storage container, and the process proceeds to S104.
In this case, when the three-dimensional model | molding apparatus 10 has a transfer means, for example, the control part 500 of the three-dimensional model | molding apparatus 10 drives a pump, and makes the 2nd waste liquid accommodated in the 1st waste liquid storage container. The transfer to the waste liquid storage container can be started, and the process can be shifted to S104.
In step S104, the control unit 500 of the three-dimensional modeling apparatus 10 detects that the transfer of the waste liquid has been completed, and the process proceeds to S104. When the three-dimensional model | molding apparatus 10 has a transfer means, for example, the control part 500 of the three-dimensional model | molding apparatus 10 complete | finishes the drive of a pump, and transfers a process to S105.
In step S105, the control unit 500 of the three-dimensional modeling apparatus 10 measures the weight B of the second waste liquid storage container after the waste liquid after the waste liquid transfer is transferred from the first waste liquid storage container to the second waste liquid storage container. Then, the process proceeds to S106.
In step S106, the control unit 500 stores the measurement result (measurement data) of the measured weight B of the second waste liquid storage container in the storage unit of the three-dimensional modeling apparatus 10, and the process proceeds to S108.
In step S107, the control unit 500 compares the weight A and the weight B. Specifically, the difference between the weight A and the weight B is taken, and the difference is compared with a preset threshold value to determine whether it is larger or smaller.
If the weight B is heavier than the weight A, and the difference between the weight B and the weight A is large and the difference is greater than the threshold, the process proceeds to S108.
On the other hand, when the weight B does not change much with respect to the weight A, and the difference between the weight B and the weight A is small and the difference is smaller than the threshold, the process proceeds to S109.
In step S108, the control unit 500 determines that the waste liquid pipe is not clogged with the waste liquid, and ends the present process. The modeling process can be continued.
In step S109, the control unit 500 determines that the waste liquid pipe is clogged, and the process proceeds to S110. In step S109, when it is detected that the waste liquid pipe is clogged, the fact is notified.
In step S110, the control unit 500 receives the detection result of clogging in step S109, stops the modeling process, and ends this process. The operator or user can cope with the clogging of the waste liquid pipe by receiving a detection result that the waste liquid pipe is clogged and taking measures such as replacement of the waste liquid pipe.

Aspects of the present invention are as follows, for example.
<1> A modeling means for modeling by stacking modeling layers made of modeling materials;
A first waste liquid storage container for temporarily storing waste liquid made of the modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
Weight measuring means for measuring the weight of the second waste liquid storage container;
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detecting means for detecting clogging of the waste liquid pipe by the waste liquid by comparing the weight of the second waste liquid storage container;
It is the manufacturing apparatus of the three-dimensional molded item characterized by having.
<2> As described in <1>, the clogging detection unit determines that the waste liquid pipe is clogged when a difference in weight is smaller than a preset threshold as a result of comparing the weights. It is a manufacturing apparatus of a three-dimensional molded item.
<3> The clogging detection means includes a notification means for notifying that the waste liquid pipe is clogged when a difference in weight is smaller than a preset threshold as a result of comparing the weights. > To <2>.
<4> The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid is transferred from the first waste liquid storage container to the second waste liquid storage container. It is a manufacturing apparatus of the three-dimensional molded item in any one of said <1> to <3> which has a recording means to record the weight of said 2nd waste liquid storage container after.
<5> Any one of <1> to <4>, wherein there are a plurality of the first waste liquid storage containers, and there are a plurality of the waste liquid pipes corresponding to each of the first waste liquid storage containers. It is a manufacturing apparatus of the three-dimensional molded item of description.
<6> Among the plurality of first waste liquid storage containers, one first waste liquid storage container is for containing the waste liquid recovered by the smoothing member, and the other first The waste liquid storage container is a manufacturing apparatus for a three-dimensional structure according to <5>, which is for storing the waste liquid recovered by the purge process.
<7> It further has a transfer means for transferring the waste liquid stored in the first waste liquid storage container to the second waste liquid storage container,
The clogging detection means detects the weight of the second waste liquid storage container in a state where the waste liquid is stored in the first waste liquid storage container before the operation of the transfer means, and the waste liquid after the operation of the transfer means. The three-dimensional object according to any one of <1> to <6>, wherein the weight of the second waste liquid storage container after being transferred from the first waste liquid storage container to the second waste liquid storage container is compared. It is a manufacturing apparatus of a molded article.
<8> The transfer means waits without operating until a predetermined amount of waste liquid is stored in the first waste liquid storage container, and the transfer means operates when the waste liquid exceeds a predetermined amount. It is a manufacturing apparatus of the three-dimensional molded item as described in said <7> in which the operation timing of a means is set.
<9> When the first waste liquid storage container is for containing the waste liquid recovered by the purge process,
The three-dimensional object according to any one of <7> to <8>, wherein the operation timing of the transfer device is set so that the transfer device operates when the number of purge processes exceeds a predetermined number. It is a manufacturing apparatus of a molded article.
<10> The weight measuring unit does not perform the measurement by the weight measuring unit while the transfer unit is in operation, and stops the operation of the transfer unit and then performs the measurement by the weight measuring unit. It is a manufacturing apparatus of the three-dimensional molded item in any one of said <7> to <9> in which the measurement timing of a measurement means is set.
<11> The measurement timing of the weight measurement unit is set so that the weight measurement unit performs the measurement of the weight measurement unit after operating the transfer unit a plurality of times, <7> to <10 > It is a manufacturing apparatus of the three-dimensional molded item in any one of.
<12> The first waste liquid storage container for storing the waste liquid recovered by the purge process includes a light shielding plate between the light source for curing the modeling material and the first waste liquid storage container. It is a manufacturing apparatus of the three-dimensional molded item as described in said <6> arranged.
<13> a first waste liquid storage container that temporarily stores waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A method for manufacturing a three-dimensional object using a three-dimensional object manufacturing apparatus having a weight measuring means for measuring the weight of the second waste liquid storage container,
A modeling step of modeling by stacking modeling layers made of the modeling material,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detection step of detecting clogging of the waste liquid pipe by waste liquid by comparing the weight of the second waste liquid storage container;
It is a manufacturing method of the three-dimensional molded item characterized by including.
<14> a first waste liquid storage container that temporarily stores waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A three-dimensional object manufacturing program for use in a three-dimensional object manufacturing apparatus having weight measuring means for measuring the weight of the second waste liquid storage container,
Laminating a modeling layer made of the modeling material to perform modeling,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container Detecting the clogging of the waste liquid pipe with the waste liquid by comparing the weight of the second waste liquid storage container;
It is a manufacturing program of the three-dimensional molded item characterized by making a computer perform a process.
<15> a first waste liquid storage container that temporarily stores waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A clogging detection method for a waste liquid pipe, wherein the clogging of the waste liquid pipe by the waste liquid is detected by using a three-dimensional object manufacturing apparatus having a weight measuring means for measuring the weight of the second waste liquid storage container. ,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detection step of detecting clogging of the waste liquid pipe in the manufacturing apparatus of the three-dimensional structure by comparing the weight of the second waste liquid storage container,
A method for detecting clogging of a waste liquid pipe, comprising:
<16> a first waste liquid storage container that temporarily stores waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A weight measurement means for measuring the weight of the second waste liquid storage container, and a clogging detection program for a waste liquid pipe used in a manufacturing apparatus for a three-dimensional structure,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container By detecting the weight of the second waste liquid storage container, the clogging with the waste liquid of the waste liquid pipe in the manufacturing apparatus of the three-dimensional structure is detected.
A program for detecting clogging of a waste pipe, which causes a computer to execute processing.

  The manufacturing apparatus for a three-dimensional structure according to any one of <1> to <12>, the method for manufacturing a three-dimensional structure according to <13>, the manufacturing program for a three-dimensional structure according to <14>, According to the method for detecting clogging of a waste liquid pipe according to <15> and the program for detecting clogging of a waste liquid pipe according to <16>, the conventional problems can be solved and the object of the present invention can be achieved. .

JP 2013-67019 A JP2013-203605A

DESCRIPTION OF SYMBOLS 10 3D modeling apparatus 11 1st discharge head 12 2nd discharge head 13 UV irradiation unit 14 Modeling stage 16 Smoothing roller 20 Modeling unit

Claims (16)

Modeling means for stacking modeling layers made of modeling materials and modeling;
A first waste liquid storage container for temporarily storing waste liquid made of the modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
Weight measuring means for measuring the weight of the second waste liquid storage container;
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detecting means for detecting clogging of the waste liquid pipe by the waste liquid by comparing the weight of the second waste liquid storage container;
An apparatus for producing a three-dimensional structure, characterized by comprising:   2. The three-dimensional object according to claim 1, wherein the clogging detection unit determines that the waste liquid pipe is clogged when a difference in weight is smaller than a preset threshold as a result of comparing the weights. manufacturing device.   The said clogging detection means has a notification means which notifies that the said waste-liquid pipe | tube is clogged when the difference in weight is smaller than the preset threshold value as a result of the comparison of the said weight. The manufacturing apparatus of the three-dimensional molded item in any one.   The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container The manufacturing apparatus of the three-dimensional molded item in any one of Claim 1 to 3 which has a recording means to record the weight of a 2nd waste liquid storage container.   5. The three-dimensional structure according to claim 1, wherein there are a plurality of the first waste liquid storage containers, and there are a plurality of the waste liquid pipes corresponding to each of the first waste liquid storage containers. Manufacturing equipment.   Among the plurality of first waste liquid storage containers, one of the first waste liquid storage containers is for storing the waste liquid recovered by the smoothing member, and the other first waste liquid storage container. The apparatus for producing a three-dimensional structure according to claim 5, wherein the container is for containing the waste liquid collected by the purge process. A transfer means for transferring the waste liquid stored in the first waste liquid storage container to the second waste liquid storage container;
The clogging detection means detects the weight of the second waste liquid storage container in a state where the waste liquid is stored in the first waste liquid storage container before the operation of the transfer means, and the waste liquid after the operation of the transfer means. The three-dimensional structure according to any one of claims 1 to 6, wherein the weight of the second waste liquid storage container after being transferred from the first waste liquid storage container to the second waste liquid storage container is compared. manufacturing device.   The transfer means is not operated until a predetermined amount of waste liquid is stored in the first waste liquid storage container, and operates so that the transfer means operates when the waste liquid exceeds a predetermined amount. The manufacturing apparatus of the three-dimensional molded item of Claim 7 with which the timing is set. When the first waste liquid storage container is for containing the waste liquid recovered by the purge process,
9. The three-dimensional object according to claim 7, wherein an operation timing of the transfer unit is set so that the transfer unit operates when the number of times of purge processing exceeds a predetermined number. manufacturing device.   The weight measuring means does not perform measurement by the weight measuring means while the transfer means is in operation, and after the operation of the transfer means is stopped, the weight measuring means performs measurement of the weight measuring means. The manufacturing apparatus of the three-dimensional molded item in any one of Claim 7 to 9 with which the measurement timing is set.   11. The measurement timing of the weight measuring unit is set so that the weight measuring unit performs measurement of the weight measuring unit after operating the transfer unit a plurality of times. Manufacturing equipment for 3D objects.   In the first waste liquid storage container for storing the waste liquid recovered by the purge process, a light shielding plate is disposed between the light source for curing the modeling material and the first waste liquid storage container. The manufacturing apparatus of the three-dimensional molded item of Claim 6. A first waste liquid storage container for temporarily storing waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A method for manufacturing a three-dimensional object using a three-dimensional object manufacturing apparatus having a weight measuring means for measuring the weight of the second waste liquid storage container,
A modeling step of modeling by stacking modeling layers made of the modeling material,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detection step of detecting clogging of the waste liquid pipe by waste liquid by comparing the weight of the second waste liquid storage container;
The manufacturing method of the three-dimensional molded item characterized by including. A first waste liquid storage container for temporarily storing waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A three-dimensional object manufacturing program for use in a three-dimensional object manufacturing apparatus having weight measuring means for measuring the weight of the second waste liquid storage container,
Laminating a modeling layer made of the modeling material to perform modeling,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container Detecting the clogging of the waste liquid pipe with the waste liquid by comparing the weight of the second waste liquid storage container;
A manufacturing program for a three-dimensional structure, which causes a computer to execute processing. A first waste liquid storage container for temporarily storing waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A clogging detection method for a waste liquid pipe, wherein the clogging of the waste liquid pipe by the waste liquid is detected by using a three-dimensional object manufacturing apparatus having a weight measuring means for measuring the weight of the second waste liquid storage container. ,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container A clogging detection step of detecting clogging of the waste liquid pipe in the manufacturing apparatus of the three-dimensional structure by comparing the weight of the second waste liquid storage container,
A method for detecting clogging of a waste liquid pipe, comprising: A first waste liquid storage container for temporarily storing waste liquid made of modeling material;
A second waste liquid storage container for accumulating waste liquid stored in the first waste liquid storage container through a waste liquid pipe;
A weight measurement means for measuring the weight of the second waste liquid storage container, and a clogging detection program for a waste liquid pipe used in a manufacturing apparatus for a three-dimensional structure,
The weight of the second waste liquid storage container in a state where the waste liquid is accommodated in the first waste liquid storage container, and the waste liquid after being transferred from the first waste liquid storage container to the second waste liquid storage container By detecting the weight of the second waste liquid storage container, the clogging with the waste liquid of the waste liquid pipe in the manufacturing apparatus of the three-dimensional structure is detected.
A waste pipe clogging detection program for causing a computer to execute processing.