JP2016179658A - Molding apparatus and molding method for molded object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding apparatus that can manufacture a molded object with high accuracy.SOLUTION: A molding apparatus includes: a mounting part 150 for mounting a sheet comprising fibers bound by a thermoplastic resin; a cutting part 160 for cutting a first sheet mounted on the mounting part 150 into an effective region constituting a molded object and an unnecessary region not constituting the molded object, on the basis of a molding data; a stacking part 140 for stacking a second sheet on the first sheet cut by the cutting part 160; and a heating part 170 for heating the second sheet to melt at least a part of the thermoplastic resin to cause the second sheet adhere to the first sheet. The apparatus molds an object by repeating the above steps of cutting a sheet by the cutting part 160, stacking a sheet by the stacking part 140, and adhesion of sheets by the heating part 170.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a modeling apparatus and a modeling method for a modeled object.

  Conventionally, an adhesive layer is formed between the first paper sheet material and the second paper sheet material, and the first paper sheet material and the second paper sheet material are bonded to each other through the adhesive layer to form a three-dimensional object. A sheet lamination modeling method for modeling is known (see, for example, Patent Document 1).

JP-A-6-278214

  However, in the above-described sheet laminate modeling method, since the adhesive layer is interposed between the first paper sheet material and the second paper sheet material, the dimensional accuracy of the molded article is reduced due to the variation in the thickness of the adhesive layer. There was a problem.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example 1] A modeling apparatus according to this application example is configured to model a mounting unit on which a sheet in which fibers are bound by a thermoplastic resin is mounted, and a first sheet mounted on the mounting unit. On the basis of the data, the second sheet is placed on the effective area that configures the modeled object and the cutting part that is cut into the unnecessary area that does not configure the modeled object, and the first sheet that is cut by the cutting unit. A stacking unit to be stacked, and a heating unit that heats the second sheet to melt at least a part of the thermoplastic resin and adheres it to the first sheet, and cutting the sheet by the cutting unit; A model is formed by repeating the stacking of sheets by the stacking unit and the adhesion of the sheet by the heating unit.

  According to this structure, the 1st sheet | seat and the 2nd sheet | seat are adhere | attached with the thermoplastic resin contained in each sheet | seat. Therefore, since the adhesive layer is not interposed between the first sheet and the second sheet, it is possible to form a highly accurate modeled object.

  Application Example 2 The heating unit of the modeling apparatus according to the application example described above is characterized in that the heating unit makes surface contact with the second sheet and pressurizes and heats the second sheet.

  According to this structure, since shaping | molding by pressurization and adhesion | attachment by heating are performed simultaneously, the modeling efficiency of a molded article can be improved.

  Application Example 3 In the modeling apparatus according to the application example described above, a thermoplastic resin is mixed into a defibrating unit that defibrates a raw material containing fibers in the atmosphere and a defibrated material defibrated by the defibrating unit. A depositing unit for depositing the mixture; and a molding unit configured to form a sheet by pressurizing and heating the deposit deposited by the depositing unit, and the sheet molded by the molding unit is placed on the mounting unit. It is characterized by being placed.

  According to this structure, a molded article can be created from used paper by using used paper as a raw material.

  Application Example 4 In the modeling apparatus according to the application example, the thermoplastic resin mixed with the defibrated material is powder or fiber.

  According to this configuration, the fibers of the defibrated material can be reliably bound to each other.

  Application Example 5 In the modeling apparatus according to the application example, the first heating temperature by the molding unit and the second heating temperature by the heating unit are the melting point of the thermoplastic resin ≦ first heating temperature ≦ second heating. It is characterized by satisfying the temperature.

  According to this structure, since the 1st heating temperature is more than melting | fusing point of a thermoplastic resin, the fibers which comprise a sheet | seat can be bound reliably. In addition, since the second heating temperature is equal to or higher than the first heating temperature, the first sheet and the second sheet can be reliably bonded with the thermoplastic resin.

  Application Example 6 In the modeling apparatus according to the application example described above, the modeling apparatus includes a coloring unit that colors at least the outline of the effective region of the first sheet before the second sheet is stacked by the stacking unit. Features.

  According to this structure, since the colored sheet | seat is laminated | stacked, a colored modeling thing can be created.

  Application Example 7 The coloring unit of the modeling apparatus according to the application example described above is characterized in that the first sheet is colored with a coloring liquid that is cured by heat or light.

  According to this configuration, the color developability is good and the gloss can be obtained. Moreover, moisture resistance can also be improved.

  [Application Example 8] A modeling method for a model according to this application example is as follows. (A) A sheet in which fibers are bound by a thermoplastic resin is placed on a placement part, and (b) is placed on the placement part. The first sheet is cut into an effective area that constitutes the modeled object and an unnecessary area that does not constitute the modeled object based on the modeling data, and (c) on the cut first sheet, Stacking the second sheets; (d) heating the second sheet to melt at least a portion of the thermoplastic resin and bonding it to the first sheet; (e) shaping the second sheet; Based on data, it cuts into the effective area | region which comprises a molded article, and the unnecessary area | region which does not comprise a molded article, and shape | molds a molded article by repeating said (c)-(e), It is characterized by the above-mentioned.

  According to this structure, the 1st sheet | seat and the 2nd sheet | seat are adhere | attached with the thermoplastic resin contained in each sheet | seat. Therefore, since the adhesive layer is not interposed between the first sheet and the second sheet, it is possible to form a highly accurate modeled object.

Schematic which shows the structure of a modeling apparatus. The schematic diagram which shows the modeling method of a molded article.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is shown differently from the actual scale so as to make each member or the like recognizable.

  First, the configuration of the modeling apparatus will be described. The modeling apparatus is configured to form a modeled object based on modeling data, a mounting unit on which a sheet in which fibers are bound by a thermoplastic resin is mounted, and a first sheet mounted on the mounting unit. A cutting section that cuts into an area and an unnecessary area that does not constitute a shaped article, a stacked section that stacks the second sheet on the first sheet cut by the cutting section, and the second sheet is heated A heating unit that melts at least a part of the thermoplastic resin and adheres it to the first sheet, and repeats cutting of the sheet by the cutting unit, stacking of the sheets by the stacking unit, and adhesion of the sheet by the heating unit This is a device for modeling a modeled object. The modeling apparatus according to the present embodiment deposits a defibrating unit that defibrates a raw material containing fibers in the atmosphere and a mixture obtained by mixing a thermoplastic resin with the defibrated material defibrated by the defibrating unit. A stacking section; and a molding section that pressurizes and heats deposits deposited by the stacking section to form a sheet, and the sheet molded by the molding section is configured to be placed on the mounting section. ing. Hereinafter, a specific configuration will be described.

  FIG. 1 is a schematic diagram illustrating a configuration of a modeling apparatus according to the present embodiment. As shown in FIG. 1, the modeling apparatus 1 according to the present embodiment includes a sheet manufacturing unit 2 and a modeling unit 3. The sheet manufacturing unit 2 includes a supply unit 10, a crushing unit 20, a defibrating unit 30, a classification unit 40, a sorting unit 50, an additive charging unit 60, a depositing unit 70, a forming unit 120, a sheet cutter unit 130, and the like. The modeling unit 3 includes a stacking unit 140, a mounting unit 150, a cutting unit 160, a heating unit 170, and the like. The modeling apparatus 1 is configured so that the sheet formed by the sheet manufacturing unit 2 is supplied to the modeling unit 3. Moreover, the control part 8 which controls said each member in the modeling apparatus 1 is provided.

First, the configuration of the sheet manufacturing unit 2 will be described.
The supply unit 10 supplies waste paper Pu or the like as a raw material to the crushing unit 20. The supply unit 10 includes, for example, a tray 11 that accumulates and stores a plurality of used paper Pu, and an automatic feeding mechanism 12 that can continuously input the used paper Pu in the tray 11 to the crushing unit 20. The used paper Pu supplied to the sheet manufacturing unit 2 is, for example, A4 size paper that is currently mainstream in offices.

  The crushing unit 20 cuts the supplied used paper Pu into pieces of several centimeters square. The crushing unit 20 includes a crushing blade 21 and constitutes an apparatus in which the cutting width of a normal shredder blade is widened. Thereby, the supplied used paper Pu can be easily cut into pieces of paper. Then, the divided coarsely crushed paper is supplied to the defibrating unit 30 via the pipe 201.

  The defibrating unit 30 defibrates a raw material containing fibers in the air. Specifically, the defibrating unit 30 includes a rotating blade (not shown) that rotates, and performs defibrating to loosen the crushed paper supplied from the crushing unit 20 into fibers. In this application, what is defibrated by the defibrating unit 30 is referred to as a defibrated material, and what has passed through the defibrating unit 30 is referred to as a defibrated material. In addition, the defibrating unit 30 of the present embodiment performs defibrating in a dry manner in the air. As a result of the defibrating process of the defibrating unit 30, the printed ink, toner, and the material applied to the paper such as the anti-bleeding material become fibers of several tens of μm or less (hereinafter referred to as “ink particles”). And separate. Therefore, the defibrated material that comes out from the defibrating unit 30 is fibers and ink particles obtained by defibrating a piece of paper. The airflow is generated by the rotation of the rotary blade, and the defibrated fibers are carried on the airflow and conveyed to the classification unit 40 in the air via the pipe 202. Note that an airflow generator that generates an airflow for conveying the defibrated fibers to the classifying unit 40 may be separately provided in the defibrating unit 30.

  The classifying unit 40 classifies the introduced material by airflow. In this embodiment, the defibrated material as the introduced material is classified into ink particles and fibers. The classifying unit 40 can classify the conveyed defibrated material into ink particles and fibers by applying a cyclone, for example. Note that other types of airflow classifiers may be used instead of the cyclone. In this case, as an airflow classifier other than the cyclone, for example, an elbow jet or an eddy classifier is used. The airflow classifier generates a swirling airflow, which is separated and classified by the difference in centrifugal force received depending on the size and density of the defibrated material, and the classification point can be adjusted by adjusting the speed and centrifugal force of the airflow. . As a result, the ink particles can be divided into relatively small and low density ink particles and fibers larger than the ink particles and high density.

  The classifying unit 40 of the present embodiment is a tangential input type cyclone, and includes an introduction port 40a into which an introduced material is introduced from the defibrating unit 30, a cylinder portion 41 with the introduction port 40a attached in a tangential direction, and a lower portion of the cylinder portion 41. The conical part 42 that follows, the lower outlet 40b provided at the lower part of the conical part 42, and the upper exhaust port 40c for discharging fine powder provided at the upper center of the cylindrical part 41 are configured. The diameter of the conical portion 42 decreases toward the lower side in the vertical direction.

  In the classification process, the airflow on which the defibrated material introduced from the introduction port 40a of the classifying unit 40 is changed into a circumferential motion by the cylindrical portion 41 and the conical portion 42, and the defibrated material is subjected to centrifugal force and classified. Then, the fibers larger than the ink particles and having a high density move to the lower outlet 40b, and the relatively small and low density ink particles are led to the upper exhaust port 40c as fine powder together with air. Then, ink particles are discharged from the upper exhaust port 40 c of the classification unit 40. Then, the discharged ink particles are collected in the receiving unit 80 via the pipe 206 connected to the upper exhaust port 40c of the classifying unit 40. On the other hand, a classified product containing fibers classified through the pipe 203 from the lower outlet 40b of the classifying unit 40 is conveyed toward the sorting unit 50 in the air. From the classification unit 40 to the sorting unit 50, it may be transported by an air current when it is classified, or may be transported from the classification unit 40 located above to the sorting unit 50 located below by gravity. Note that a suction part or the like for efficiently sucking the short fiber mixture from the upper exhaust port 40c may be disposed in the upper exhaust port 40c, the pipe 206, or the like of the classification unit 40. Classification is not exactly divided at a certain size or density. Further, it is not exactly divided into fibers and ink particles. Among the fibers, relatively short fibers are discharged from the upper exhaust port 40c together with the ink particles. A relatively large ink particle is discharged from the lower outlet 40b together with the fiber.

  The sorting unit 50 sorts the classified product (defibrated material) including the fibers classified by the classifying unit 40 through the sieve unit 51 having a plurality of openings. More specifically, the classified product including the fibers classified by the classifying unit 40 is sorted into a passing material that passes through the opening and a residue that does not pass through the opening. The sorting unit 50 according to the present embodiment includes a mechanism for dispersing the classified material in the air by rotational movement. Then, the passing material that has passed through the opening by sorting by the sorting unit 50 is transported from the passing material transport unit 52 to the deposition unit 70 side via the pipe 204. On the other hand, the residue that has not passed through the opening due to the sorting by the sorting unit 50 is returned to the defibrating unit 30 again as the defibrated material via the pipe 205. Thereby, the residue is reused (reused) without being discarded.

  The passing material that has passed through the opening by sorting by the sorting unit 50 is conveyed in the air to the deposition unit 70 via the pipe 204. The sorting unit 50 may be transported from the sorting unit 50 to the deposition unit 70 by a blower (not shown) that generates an air flow, or may be transported by gravity from the sorting unit 50 located above to the deposition unit 70 located below. Between the sorting unit 50 and the depositing unit 70 in the pipe 204, an additive feeding unit 60 for adding a thermoplastic resin to the passing material (defibrated material) to be conveyed is provided. The thermoplastic resin mixed with the passing material (defibrated material) is in the form of powder or fiber. Thereby, it becomes possible to bind together the fibers of the defibrated material. In addition to thermoplastic resins, for example, flame retardants, whiteness improvers, sheet strength enhancers and sizing agents, absorption modifiers, fragrances, deodorizers, etc. can be added to the passing material to be conveyed. It is. These additives are stored in the additive storage unit 61 and are charged from the charging port 62 by a charging mechanism (not shown).

  The depositing unit 70 is capable of depositing a material containing fibers, and deposits a mixture obtained by mixing a thermoplastic resin with the defibrated material defibrated by the defibrating unit 30. Specifically, the depositing unit 70 forms a web W by depositing using a mixture containing fibers and thermoplastic resin introduced from the pipe 204, and has a mechanism for uniformly dispersing the fibers in the air. I have. Further, the depositing unit 70 has a moving unit that deposits the mixture as a deposit (web W) while moving. In addition, the moving part of this embodiment is comprised with the tension roller 72 and the endless mesh belt 73 in which the mesh was formed. The mesh belt 73 is stretched by a stretch roller 72. The mesh belt 73 rotates (moves) in one direction when at least one of the stretching rollers 72 rotates. In addition, the web W concerning this embodiment says the structure form of the object containing a fiber and a thermoplastic resin. Therefore, even when the shape or the like changes during heating, pressurizing, cutting, or conveying the web, the web is shown.

  First, as a mechanism for uniformly dispersing the fibers in the air, the depositing unit 70 is provided with a forming drum 71 into which the fibers and the thermoplastic resin are put. Then, by rotating the forming drum 71, the thermoplastic resin (additive) can be uniformly mixed in the passing material (fiber). The forming drum 71 is provided with a screen having a plurality of small holes. Then, the forming drum 71 is rotationally driven to uniformly mix the thermoplastic resin (additive) into the passing material (fiber), and the fiber and the mixture of the fiber and the thermoplastic resin that have passed through the small holes are evenly mixed in the air. Can be dispersed.

  A mesh belt 73 is disposed below the forming drum 71. In addition, a suction device 75 as a suction unit that generates an airflow directed vertically downward is provided below the forming drum 71 via a mesh belt 73. The suction device 75 can suck the fibers dispersed in the air onto the mesh belt 73.

  The fibers and the like that have passed through the small hole screen of the forming drum 71 are deposited on the mesh belt 73 by the suction force of the suction device 75. At this time, by moving the mesh belt 73 in one direction, it is possible to form a web W that includes fibers and a thermoplastic resin and is deposited in a long shape. By continuously dispersing from the forming drum 71 and moving the mesh belt 73, a continuous belt-like web W is formed. The mesh belt 73 may be made of metal, resin, or non-woven fabric, and may be any material as long as fibers can be deposited and an air stream can pass therethrough. If the mesh hole diameter of the mesh belt 73 is too large, fibers enter the mesh, resulting in unevenness when the web W (sheet) is formed. On the other hand, if the mesh hole diameter is too small, the suction device 75 stabilizes the mesh. It is difficult to form a flowing airflow. For this reason, it is preferable to adjust the hole diameter of a mesh suitably. The suction device 75 can be configured by forming a sealed box with a window of a desired size opened under the mesh belt 73, and sucking air from other than the window to make the inside of the box have a negative pressure from the outside air.

  The web W formed on the mesh belt 73 is transported according to the transport direction (the white arrow in the figure) by the rotational movement of the mesh belt 73. On the upper side of the mesh belt 73, an intermediate conveyance unit 90 as a peeling unit is disposed. The web W is peeled off from the mesh belt 73 by the intermediate conveyance unit 90 and conveyed to the pressure unit 110 side. That is, it has a peeling part (intermediate conveyance part 90) for peeling the deposit (web W) from the moving part (mesh belt 73), and the peeled deposit (web W) can be conveyed to the pressurizing part 110. The intermediate conveyance unit 90 is configured to be able to convey the web W while sucking the web W vertically upward (the direction in which the web W is separated from the mesh belt 73). The intermediate conveyance unit 90 is disposed vertically apart from the mesh belt 73 (in a direction perpendicular to the surface of the web W), and a part of the intermediate conveyance unit 90 is shifted downstream in the conveyance direction of the web W. Are arranged. The conveyance section of the intermediate conveyance unit 90 is a section from the tension roller 72a on the downstream side of the mesh belt 73 to the pressure unit 110.

  The intermediate transport unit 90 includes a transport belt 91, a plurality of stretching rollers 92, and a suction chamber 93. The conveyor belt 91 is an endless mesh belt formed with a mesh, and is stretched by a stretch roller 92. Then, at least one of the plurality of stretching rollers 92 rotates, so that the conveyor belt 91 rotates (moves) in one direction.

  The suction chamber 93 is disposed inside the transport belt 91, has a hollow box shape having an upper surface and four side surfaces in contact with the upper surface, and a bottom surface (a surface facing the transport belt 91 positioned below). Is open. The suction chamber 93 includes a suction unit that generates an air flow (suction force) in the suction chamber 93. Then, by driving the suction part, the internal space of the suction chamber 93 is sucked and air flows from the bottom surface of the suction chamber 93. As a result, an air flow directed upward of the suction chamber 93 is generated, and the web W can be sucked from above the web W and adsorbed to the conveyor belt 91. The conveyor belt 91 moves (circulates) as the stretching roller 92 rotates, and can convey the web W toward the pressure unit 110. Further, the suction chamber 93 is disposed at a downstream position where the mesh chamber 73 partially overlaps with the suction device 75 when viewed from above, and the web W on the mesh belt 73 is placed in the suction chamber. It can be peeled off from the mesh belt 73 at a position opposite to 93 and attracted to the conveyor belt 91. The tension roller 92 rotates so that the conveyance belt 91 moves at the same speed as the mesh belt 73. If there is a difference in speed between the mesh belt 73 and the conveyor belt 91, the web W can be prevented from being pulled and broken or buckled by setting the same speed.

  A pressurizing unit 110 is disposed on the downstream side of the intermediate conveyance unit 90 in the conveyance direction of the web W. The pressure unit 110 includes a pair of pressure rollers 111 and 112 and pressurizes the web W being conveyed. For example, the pressurizing unit 110 pressurizes the web W so as to have a thickness of about 1/5 to 1/30 of the thickness of the web W formed by the deposition unit 70. Thereby, the strength of the web W can be improved.

  The forming unit 120 is disposed on the downstream side of the pressurizing unit 110 in the conveyance direction of the web W. The forming unit 120 heats the web W as a deposit deposited in the deposition unit 70 at a first heating temperature, and binds the fibers included in the web W through a thermoplastic resin. The 1st heating temperature in the shaping | molding part 120 is set to the temperature more than melting | fusing point of a thermoplastic resin. As a result, the thermoplastic resin can be melted and the fibers of the defibrated material can be reliably bound to each other, and the belt-like sheet Pr ′ (web W) can be formed. In the present embodiment, the deposited web W is heated at the first heating temperature while being pressurized. Specifically, the molding unit 120 includes a pair of heating rollers 121 and 122. A heating member such as a heater is provided at the center of the rotating shaft of each of the heating rollers 121 and 122. By passing the web W between the pair of heating rollers 121 and 122, a heating member such as a heater is added. Pressure heating can be performed. The web W is pressurized and heated by the pair of heating rollers 121 and 122, so that the thermoplastic resin melts and becomes easily entangled with the fibers, and the fiber interval is shortened and the contact point between the fibers is increased.

  On the downstream side of the forming unit 120 in the conveying direction, the sheet cutter unit 130 that cuts the web W intersects with the first sheet cutter unit 130a that cuts the web W along the conveying direction of the web W and the conveying direction of the web W. A second sheet cutter portion 130b that cuts the web W in the direction to be disposed. The first sheet cutter unit 130a is, for example, a slitter, and cuts according to a predetermined cutting position in the conveyance direction of the web W. The second sheet cutter unit 130b is, for example, a rotary cutter, and cuts the continuous web W into sheets (single sheets) according to a cutting position set to a predetermined length. Thereby, a sheet Pr (web W) having a desired size is formed.

  In addition, the sheet | seat concerning the said embodiment mainly says what used the thing containing fibers, such as used paper and a pure pulp, as a raw material, and was made into the sheet form. However, the shape is not limited to that, and may be a board shape or a web shape (or a shape having irregularities). The raw material may be plant fibers such as cellulose, chemical fibers such as PET (polyethylene terephthalate) and polyester, and animal fibers such as wool and silk. In the present application, the sheet is divided into paper and non-woven fabric. The paper includes a thin sheet form, and includes recording paper for writing and printing, wallpaper, wrapping paper, colored paper, Kent paper, and the like. Nonwoven fabrics are thicker or lower in strength than paper and include nonwoven fabrics, fiber boards, tissue paper, kitchen paper, cleaners, filters, liquid absorbents, sound absorbers, cushioning materials, mats, and the like.

  In the present embodiment, the used paper mainly refers to printed paper. However, if used as a raw material, it is regarded as used paper regardless of whether it is used.

Next, the configuration of the modeling unit 3 will be described.
The placement unit 150 places the sheet Pr in which fibers are bound by a thermoplastic resin on the placement surface 150a. The placement surface 150a of the placement unit 150 has a flat surface on which the sheet Pr is placed. Here, in the present embodiment, the description that the sheet Pr is placed on the placement unit 150 is not only directly placing the sheet Pr on the placement surface 150a, but is already placed on the placement surface 150a. This includes placing (stacking) another sheet Pr on the sheet Pr. The placement unit 150 includes a drive unit such as a motor and is configured to be movable in the vertical direction. Moreover, it has a 1st detection part (not shown) which detects the position (height) in the vertical direction of the mounting part 150 (mounting surface 150a), and a mounting part is based on the detection information by a 1st detection part. The position of 150 in the vertical direction is controlled. Each time the sheet Pr is placed (stacked) on the placement unit 150, the placement unit 150 is configured to be movable downward in the vertical direction so that the height of the stacked sheets Pr becomes a predetermined height position. ing. The detection of the placement unit 150 by the first detection unit may be performed for each sheet, or may be performed for each predetermined number of sheets (for example, 10 sheets). Or you may comprise so that the mounting part 150 may be moved by the predetermined amount according to the thickness of the sheet | seat Pr, without providing a 1st detection part.

  The cutting unit 160 cuts the sheet Pr placed on the placement unit 150 into an effective area that configures the modeled object and an unnecessary area that does not configure the modeled object based on the modeling data. The cutting unit 160 includes a cutting blade 160a and an XY cutting plotter (not shown; hereinafter simply referred to as an XY plotter) that moves horizontally based on a cutting driving signal transmitted from the control unit 8 to which the cutting blade 160a is fixed. It is composed of. The cutting blade 160a can two-dimensionally cut the sheet Pr placed (laminated) on the placement unit 150 with an XY plotter. In addition, the structure of the cutting | disconnection part 160 may apply a laser cutter, an ultrasonic cutter, etc. suitably other than cutters, such as the cutting blade 160a.

  The stacking unit 140 stacks other sheets Pr on the sheet Pr placed on the placing unit 150. Specifically, the second sheet Pr2 is stacked on the first sheet Pr1 cut by the cutting unit 160. The stacking unit 140 of the present embodiment is disposed on the downstream side in the transport direction of the second sheet cutter unit 130b of the sheet manufacturing unit 2, and includes a pair of transport rollers 141 and 142. In addition, the configuration for moving the placement surface 150a of the placement unit 150 in the vertical direction in order to stack the second sheet Pr2 on the first sheet Pr1 is also regarded as a part of the stacking unit 140. Can do. Accordingly, the sheet Pr formed by the forming unit 120 of the sheet manufacturing unit 2 and formed into a single sheet by the sheet cutter unit 130 is conveyed by the stacking unit 140 and mounted on the mounting unit 150.

  The heating unit 170 is disposed on the upper side of the placement unit 150 and heats the sheet Pr placed on the placement unit 150. Specifically, the second sheet Pr2 stacked on the first sheet Pr1 placed on the placement unit 150 is heated to melt at least a part of the thermoplastic resin, and the first sheet Pr1 and the first sheet Pr1 The second sheet Pr2 is adhered. At this time, at least a part of the resin contained in the second sheet Pr2 that is directly heated by the heating unit 170 is melted, and the first sheet Pr1 and the second sheet Pr2 are bonded. A part of the resin contained in the first sheet Pr1 may melt and contribute to adhesion.

  The heating unit 170 of the present embodiment is configured to make surface contact with the second sheet Pr2 stacked on the first sheet Pr1, pressurize and heat. Since molding by pressurization and adhesion by heating are performed simultaneously, manufacturing efficiency can be increased. As a specific configuration of the heating unit 170, the heating unit 170 includes a plate 171 large enough to press the entire surface of the sheet Pr placed on the placement unit 150, and the plate 171 at a predetermined temperature. A heater unit (not shown) that can be heated to the second heating temperature. The pressing surface of the plate 171 is not attached to the pressed sheet Pr, and is subjected to a peeling process using fluororesin, silicon, or the like so as to be easily peeled off.

  The heating unit 170 and the placement unit 150 are configured to be relatively movable in the vertical direction, and are configured to be able to heat the sheet Pr placed on the placement unit 150. In this embodiment, the heating unit 170 includes a drive unit such as a motor and is configured to be movable in the vertical direction. The heating unit 170 moves downward with respect to the mounting unit 150 and is mounted on the mounting unit 150. It is configured to pressurize and heat the placed sheet Pr. Moreover, it has the 2nd detection part (not shown) which detects the position (height) in the vertical direction of the heating part 170, the position in the vertical direction of the heating part 170 is controlled based on the detection information by a detection part, The sheet Pr laminated at a predetermined position can be heated under pressure. Alternatively, if the placement unit 150 is controlled so that the position (height) of the uppermost sheet Pr stacked on the placement surface 150a of the placement unit 150 is always the same position, the second detection unit Even if not, if the heating unit 170 (the pressing surface of the plate 171) is moved to a predetermined position, pressure heating can be performed.

  Further, the second heating temperature of the heating unit 170 is set to a temperature equal to or higher than the first heating temperature (more than the melting point of the thermoplastic resin) in the molding unit 120. Thereby, the 1st sheet Pr1 and the 2nd sheet Pr2 can be pasted up certainly.

  And in the modeling apparatus 1 comprised as mentioned above, the control part 8 drive-controls each part which comprises the sheet manufacturing part 2, and forms the sheet | seat Pr. Further, the control unit 8 performs drive control of the placement unit 150, the cutting unit 160, and the heating unit 170. Then, the first sheet Pr <b> 1 formed by the sheet manufacturing unit 2 is placed on the placement unit 150 by the lamination unit 140. Based on the modeling data (information representing the shape of the three-dimensional object), the control unit 8 converts the two-dimensional information data (slice data) representing the cross-sectional shape of the three-dimensional object into raster data and supplies the raster data to the cutting unit 160. . The raster data is data representing the cross-sectional shape of the three-dimensional object, and one side of the cross-sectional shape outline is an effective area constituting the three-dimensional object (modeled object), and the other side does not constitute the three-dimensional object (modeled object). It is an unnecessary area. Note that information representing the shape of a three-dimensional object is supplied by, for example, a three-dimensional CAD system. Then, the cutting unit 160 cuts the first sheet Pr based on the raster data. The raster data corresponds to the first sheet Pr1. Subsequently, the second sheet Pr2 is stacked on the first sheet Pr1 cut by the cutting unit 160. Then, the heating unit 170 is lowered to the placement unit 150 side, and the first sheet Pr1 and the second sheet Pr2 stacked are pressurized and heated to bond the first sheet Pr1 and the second sheet Pr2. Let Then, the second sheet Pr2 is cut based on the raster data corresponding to the second sheet Pr2. That is, the uppermost sheet (first sheet Pr1) on the placement unit 150 is cut, and another sheet (second sheet Pr2) is stacked on the uppermost sheet (first sheet Pr1). Then, the other sheet (second sheet Pr2) which has become the newest is heated and bonded to the lower sheet (first sheet Pr1). In the same manner, a series of processes are repeated in which the uppermost sheet is cut, the other sheets are laminated, and the other uppermost sheet is heated and bonded to the lower sheet. . In this way, in the modeling apparatus 1, by repeatedly cutting the sheet Pr by the cutting unit 160, stacking the sheets Pr on the placement unit 150 by the stacking unit 140, and bonding the sheet Pr by the heating unit 170. A model can be modeled.

  In addition, although the modeling apparatus 1 of this example was set as the structure which has the sheet manufacturing part 2 and the modeling part 3, it has the modeling part 3 using the sheet | seat Pr manufactured by the sheet manufacturing apparatus which has the sheet manufacturing part 2. You may model a modeling thing with a modeling apparatus. That is, the sheet manufacturing unit 2 and the modeling unit 3 may be integrated or separate.

  Next, a method for modeling a model will be described. In the present embodiment, a case where a modeling object is modeled using the modeling apparatus 1 will be described. In the method of manufacturing a modeled object according to the present embodiment, (a) a sheet obtained by binding fibers with a thermoplastic resin is placed on a placement unit, and (b) a first sheet placed on the placement unit is Based on modeling data, it cut | disconnects into the effective area | region which comprises a molded article, and the unnecessary area | region which does not comprise a molded article, (c) Stacks a 2nd sheet | seat on the cut | disconnected 1st sheet | seat, (d ) Heating the second sheet to melt at least a part of the thermoplastic resin and bonding it to the first sheet; (e) an effective area that constitutes the modeled object based on the modeling data; Then, it is cut into unnecessary areas that do not constitute a shaped article, and the above (c) to (e) are repeated. In addition, this embodiment demonstrates the case where the cylindrical molded object M is modeled.

  First, as shown in FIG. 2A, the first sheet Pr <b> 1 in which fibers are bound by a thermoplastic resin is placed on the placement unit 150. Specifically, the sheet manufacturing unit 2 of the modeling apparatus 1 is driven to form (manufacture) the first sheet Pr1 in which the fibers are bound by a thermoplastic resin. Then, the first sheet Pr <b> 1 is placed on the placement surface 150 a of the placement unit 150 via the stacking unit 140 of the modeling unit 3.

  Next, as shown in FIG. 2B, the first sheet Pr1 placed on the placement unit 150 does not constitute a modeled object and the effective region V1 that configures the modeled object M based on the modeling data. Cut to unnecessary area U1. Specifically, the cutting unit 160 is driven based on the raster data corresponding to the first sheet Pr1 based on the modeling data to cut the first sheet Pr1. In the present embodiment, the area surrounded by the contour line C1 constituting the model M (see FIG. 2F) is the effective area V1, and other than the area surrounded by the contour line C1 (effective area V1). This area is the unnecessary area U1. Further, as shown in FIG. 2B, the dividing line DL (DL1) is formed by cutting so as to divide the unnecessary region U1. Specifically, the dividing line DL (DL1) is formed by cutting the first sheet Pr1 from the contour line C1 of the effective region V1 toward the outer peripheral edge of the first sheet Pr1 at a predetermined interval. The dividing line DL (DL1) is for facilitating removal of the unnecessary area U from the laminate (laminate) of the sheet Pr and taking out the effective area V (molded article M) after the shaping process is completed. Unnecessary region U can be eliminated by dividing it into a plurality of three dimensions. In addition, the number of the dividing lines DL can be set as appropriate according to the shape of the model M. The dividing line DL is set based on dividing line data obtained by converting input information from the three-dimensional CAD system by the control unit 8. Then, the placement unit 150 is lowered by the thickness of the first sheet Pr1 and waits until the second sheet Pr2 is supplied.

  Next, as shown in FIG. 2C, the second sheet Pr2 is stacked on the cut first sheet Pr1. Specifically, the second sheet Pr <b> 2 manufactured by the sheet manufacturing unit 2 is placed on the first sheet Pr <b> 1 mounted on the mounting unit 150 by the stacking unit 140 of the modeling unit 3. The sheets Pr2 are stacked.

  Next, the second sheet Pr2 is heated at the second heating temperature to melt at least a part of the thermoplastic resin and adhere to the first sheet Pr1. Specifically, the heating unit 170 is lowered to the placement unit 150 side, the surface of the plate 171 is brought into contact with the surface of the second sheet Pr2, and the stacked second sheet Pr2 is pressurized and heated. Then, after predetermined pressure heating, the heating unit 170 is moved upward from the placement unit 150. Thereby, the sheet Pr1 and the second sheet Pr2 are bonded.

  Next, as shown in FIG. 2D, the second sheet Pr <b> 2 is cut into an effective area V <b> 2 that configures the modeled object M and an unnecessary area U <b> 2 that does not configure the modeled object based on the modeling data. Specifically, the cutting unit 160 is driven based on raster data corresponding to the second sheet Pr2 based on the modeling data, and the second sheet Pr2 is cut. In the present embodiment, the area surrounded by the contour line C2 constituting the model M (see FIG. 2F) is the effective area V2, and other than the area surrounded by the contour line C2 (effective area V2). This area is the unnecessary area U2. Further, as shown in FIG. 2D, the dividing line DL (DL2) is formed by cutting so as to divide the unnecessary region U2. Specifically, the dividing line DL (DL2) is formed by cutting the second sheet Pr2 from the contour line C2 of the effective region V2 toward the outer peripheral edge of the second sheet Pr2 at a predetermined interval. Then, the placement unit 150 is lowered by the thickness of the second sheet Pr2, and waits until the next sheet Pr3 (not shown) is supplied.

  Next, another sheet Pr3 is stacked on the cut second sheet Pr2, and the sheet Pr3 is pressurized and heated by the heating unit 170 and cut by the cutting unit 160 in the same manner as described above. The above steps are repeated. Then, as shown in FIG. 2 (e), a predetermined number of sheets Prn (n is a natural number, indicating the order of stacking) necessary for modeling the molded object M are stacked, and pressure heating and cutting are completed. At this point, the driving of the modeling apparatus 1 is stopped.

  As shown in FIG. 2 (f), the laminated portion of the effective region V, that is, the modeling, is removed from the laminated body in which the predetermined number of sheets Prn are stacked, by removing the laminated portion of the unnecessary region U along the dividing line DL. The object M can be taken out.

  As described above, according to the present embodiment, the following effects can be obtained.

  The first sheet Pr1 in which the fibers are bound by the thermoplastic resin and the second sheet Pr2 in which the fibers are bound by the thermoplastic resin in the same manner are pressurized and heated by the heating unit 170, and the first sheet Pr1 is heated. The thermoplastic resin contained in the sheet Pr1 or the second sheet Pr2 is adhered to each other. Therefore, since no adhesive layer is interposed between the first sheet Pr1 and the second sheet Pr2, there is no decrease in accuracy due to variations in the thickness of the adhesive layer, and a highly accurate model M can be formed. Further, since an adhesive application step for bonding the first sheet Pr1 and the second sheet Pr2 is unnecessary, the modeling efficiency of the model M can be improved. Moreover, since the modeling apparatus 1 includes the sheet manufacturing unit 2, the modeling object M can be efficiently modeled using the used paper Pu.

  The present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below.

  (Modification 1) In the embodiment described above, the modeled model M is monochromatic because the model M is modeled using the sheet Pr molded using the fibers defibrated by the sheet manufacturing unit 2. However, in order to solve this, the modeling apparatus 1 may be provided with a colored portion. Specifically, before the second sheet Pr2 is stacked by the laminating unit 140, a configuration having a coloring part that colors at least the contour part of the effective region V1 of the first sheet Pr1 may be employed. The coloring portion in this case is configured to color the first sheet Pr1 with a coloring liquid that is cured by heat or light. If it does in this way, since the colored sheet | seat Pr is laminated | stacked, the colored modeling thing M can be modeled. In addition, it has good color development and can give gloss. Moreover, moisture resistance can also be improved.

  (Modification 2) In the above-described embodiment, the model M is modeled by supplying the used paper Pu as a raw material. However, the present invention is not limited to this. For example, as raw materials other than the used paper Pu, used paper Pu having different fiber thicknesses and lengths, such as chemical fibers such as PET (polyethylene terephthalate) and polyester, and wool may be supplied. Moreover, you may add a whiteness improving agent other than a thermoplastic resin with respect to a fiber. In this way, a wide variety of shaped objects M having different textures and the like can be formed.

  (Modification 3) In the said embodiment, although the 1st sheet cutter part 130a (slitter) was arrange | positioned in the sheet cutter part 130, the structure which abbreviate | omitted the 1st sheet cutter part 130a (slitter) may be sufficient. Even if it does in this way, while being able to acquire the effect similar to the above, the structure of the modeling apparatus 1 can be simplified.

  (Modification 4) In the said embodiment, although the molded article M was modeled using the sheet | seat Pr formed in the single sheet | seat by the sheet cutter part 130, it is not limited to this structure. For example, the structure which shape | molds the molded article M by laminating | stacking what was cut out into sheet form from continuous paper (roll paper etc.) may be sufficient. Even in this case, the same effect as described above can be obtained.

  (Modification 5) In the above embodiment, the two-dimensional information data (slice data) representing the cross-sectional shape of the three-dimensional object is converted into raster data. However, it may be converted into vector data. Then, the cutting by the cutting unit 160 may be performed based on the vector data.

  DESCRIPTION OF SYMBOLS 1 ... Modeling apparatus, 2 ... Sheet manufacturing part, 3 ... Modeling part, 8 ... Control part, 10 ... Supply part, 20 ... Crushing part, 30 ... Defibration part, 40 ... Classification part, 50 ... Sorting part, 60 ... Additive loading section, 70 ... deposition section, 90 ... intermediate conveyance section, 110 ... pressing section, 120 ... molding section, 121,122 ... heating roller, 130 ... sheet cutter section, 130a ... first sheet cutter section, 130b ... 2nd sheet cutter part, 140 ... laminate part, 141,142 ... conveyance roller, 150 ... mounting part, 150a ... mounting surface, 160 ... cutting part, 160a ... cutting blade, 170 ... heating part, 171 ... plate.

Claims (8)

A placement section on which a sheet in which fibers are bound by a thermoplastic resin is placed;
A cutting section that cuts the first sheet placed on the placement section into an effective area that configures the modeled object and an unnecessary area that does not configure the modeled object based on the modeling data;
On the first sheet cut by the cutting unit, a stacking unit that stacks a second sheet;
A heating unit that heats the second sheet to melt at least a part of the thermoplastic resin and adheres it to the first sheet;
A modeling apparatus for modeling a model by repeating cutting of sheets by the cutting unit, stacking of sheets by the stacking unit, and adhesion of sheets by the heating unit. The modeling apparatus according to claim 1,
The heating device is in surface contact with the second sheet, pressurizes and heats the modeling apparatus. In the modeling apparatus according to claim 1 or 2,
A defibrating unit for defibrating raw materials containing fibers in the atmosphere;
A depositing unit for depositing a mixture obtained by mixing a thermoplastic resin with the defibrated material defibrated by the defibrating unit;
A molding part that pressurizes and heats the deposit deposited by the deposition part to mold a sheet, and
The sheet forming device formed by the forming unit is placed on the mounting unit. The modeling apparatus according to claim 3,
The molding apparatus, wherein the thermoplastic resin mixed with the defibrated material is powder or fiber. In the modeling apparatus according to claim 3 or claim 4,
The first heating temperature by the molding part and the second heating temperature by the heating part are:
A molding apparatus that satisfies the melting point of the thermoplastic resin ≦ first heating temperature ≦ second heating temperature. In the manufacturing apparatus as described in any one of Claims 1-5,
A modeling apparatus comprising: a coloring unit that colors at least a contour of the effective region of the first sheet before the second sheet is stacked by the stacking unit. The modeling apparatus according to claim 6,
The modeling apparatus, wherein the coloring unit colors the first sheet with a coloring liquid that is cured by heat or light. (A) A sheet in which fibers are bound by a thermoplastic resin is placed on the placing part,
(B) cutting the first sheet placed on the placement unit into an effective area that constitutes the shaped article and an unnecessary area that does not constitute the shaped article based on the modeling data;
(C) stacking a second sheet on the cut first sheet;
(D) heating the second sheet to melt at least a portion of the thermoplastic resin and bond it to the first sheet;
(E) Based on the modeling data, the second sheet is cut into an effective area that configures the modeled object and an unnecessary area that does not configure the modeled object,
A modeling method for a modeled object, wherein the modeled object is modeled by repeating the steps (c) to (e).

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