JP6520288B2 - Modeling device, modeling method of modeling object - Google Patents

Description

  The present invention relates to a modeling apparatus and a modeling method of a modeling 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 adhered to each other through the adhesive layer to form a three-dimensional object. There is known a sheet lamination forming method for forming (see, for example, Patent Document 1).

JP-A-6-278214

  However, in the sheet lamination molding method, since the adhesive layer is interposed between the first paper sheet material and the second paper sheet material, the dimensional accuracy of the shaped article is lowered due to the dispersion of the thickness of the adhesive layer. There was a problem.

  The present invention has been made to solve at least a part of the above-described problems, and can be realized as the following modes or application examples.

  Application Example 1 In the forming apparatus according to this application example, the placement unit on which the sheet in which the fibers are bound by the thermoplastic resin is placed, and the first sheet placed on the placement unit are shaped Based on the data, a cutting unit that cuts into an effective area that configures a shaped object and an unnecessary area that does not configure a shaped object, and a part of the unnecessary area of the first sheet cut by the cutting unit Removing portion, a laminating portion for stacking a second sheet on the first sheet from which the unnecessary area has been removed by the removing portion, and the thermoplastic sheet by heating the second sheet Cutting the sheet by the cutting portion, removing the unnecessary area from the sheet by the removing portion, and a heating portion for melting at least a portion of the resin and adhering to the first sheet; Stacking of sheets and the heating unit Characterized by shaping the shaped product by repeating the adhesion of the sheet.

  According to this configuration, the first sheet and the second sheet are adhered to each other by the thermoplastic resin contained in each sheet. Therefore, since the adhesive layer does not intervene between the first sheet and the second sheet, it is possible to form a shaped article with high accuracy. Furthermore, since the second sheet is laminated in a state in which a part of the unnecessary area of the first sheet, for example, the part corresponding to the recess and the hollow part in the shaped article is removed by the removing unit, Can be created.

  Application Example 2 The removal unit of the shaping apparatus according to the application example is characterized by having a rotating cutting blade.

  According to this configuration, the sheet can be cut freely. Therefore, shaped articles of any shape can be formed.

  Application Example 3 The forming apparatus according to this application example is a forming apparatus that forms a formed article by laminating sheets in which fibers are bound by a thermoplastic resin, and does not form the formed article based on the formation data. A removing unit that removes a part of the unnecessary area from the sheet, a stacking part that places the sheet from which the part of the unnecessary area is removed at the uppermost position on the mounting section; A heating unit that heats the upper sheet to melt at least a part of the thermoplastic resin and adheres to the lower sheet; and the effective area that forms the shaped object based on the formation data, the uppermost sheet. And a cutting unit for cutting into an unnecessary area that does not constitute a shaped object, the removal of a part of the unnecessary area from the sheet by the removing unit, the stacking of the sheets by the laminating unit, and the sheet by the heating unit Bonding and sealing by the cutting part Characterized by shaping the shaped object cutting and, by repeating.

  According to this configuration, the upper sheet and the lower sheet are adhered to each other by the thermoplastic resin contained in each sheet. Therefore, since an adhesive layer does not intervene between sheets, a high-precision molded article can be formed. Furthermore, since the sheet | seat from which a part of unnecessary area | region, for example, the part corresponding to a recessed part and a hollow part in a modeling thing was removed is laminated | stacked, the modeling thing of a hollow structure can be created.

  Application Example 4 The heating unit of the shaping apparatus according to the application example is characterized in surface contact with the second sheet to apply pressure and heat.

  According to this configuration, since the molding by pressure and the adhesion by heating are simultaneously performed, the manufacturing efficiency can be enhanced.

  Application Example 5 In the forming apparatus according to the application example described above, the thermoplastic resin is mixed with the defibrating unit that defibrates the raw material containing the fiber in the atmosphere, and the defibrated material disintegrated by the defibrating unit. A deposition unit for depositing the mixture, and a forming unit for forming a sheet by pressing and heating the deposition deposited by the forming unit, and forming the shaped object using the sheet formed by the forming unit It is characterized by

  According to this configuration, it is possible to create a shaped object from waste paper by using waste paper as a raw material.

  Application Example 6 In the shaping apparatus according to the application example, the thermoplastic resin mixed with the defibrated material is in the form of powder or fiber.

  According to this configuration, it is possible to reliably bind the fibers of the defibrated material.

  Application Example 7 In the shaping apparatus according to the application example, the first heating temperature by the molding unit and the second heating temperature by the heating unit are: melting point of the thermoplastic resin ≦ first heating temperature ≦ second heating temperature , It is characterized by satisfying.

  According to this configuration, since the first heating temperature is equal to or higher than the melting point of the thermoplastic resin, the fibers constituting the sheet can be reliably bonded to each other. Further, 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 to the thermoplastic resin.

  Application Example 8 In the shaping apparatus according to the application example described above, at least the effective area of the sheet (the first sheet) on the placement unit is before the sheets (the second sheet) are stacked by the stacking unit. It has a colored part which colors an outline part of.

  According to this configuration, since the colored sheets are stacked, it is possible to create a colored shaped article.

  Application Example 9 The colored portion of the shaping apparatus according to the application example is characterized in that the sheet (the first sheet) is colored with a coloring liquid which is cured by heat or light.

  According to this configuration, the color developability can be well exhibited. Also, the moisture resistance can be improved.

  Application Example 10 In the method for forming a shaped product according to this application example, (a) a sheet obtained by binding fibers with a thermoplastic resin is placed on the placement unit, and (b) placed on the placement unit described above The first sheet is cut into an effective area constituting the object and an unnecessary area not constituting the object based on the formation data, and (c) a part of the unnecessary area of the first sheet (D) stacking a second sheet on the first sheet from which the unnecessary area has been removed, and (e) heating the second sheet to form at least the thermoplastic resin. A part of the sheet is melted and adhered to the first sheet, and (f) the second sheet is cut into an effective area constituting the object and an unnecessary area not constituting the object based on the formation data. , Forming a shaped object by repeatedly performing the above (c) to (f) .

  According to this configuration, the first sheet and the second sheet are adhered to each other by the thermoplastic resin contained in each sheet. Therefore, since the adhesive layer does not intervene between the first sheet and the second sheet, it is possible to form a shaped article with high accuracy. Furthermore, since the second sheet is laminated in a state in which a part of the unnecessary area of the first sheet, for example, the part corresponding to the recess and the hollow part in the shaped article is removed by the removing unit, Can be created.

  Application Example 11 A method for forming a shaped object according to this application example is a method for forming a shaped object in which a sheet in which fibers are bound with a thermoplastic resin is laminated to form a shaped object, and (a) shaping data Based on the above, part of the unnecessary area that does not constitute the object is removed from the sheet, and (b) the sheet from which part of the unnecessary area has been removed is placed on the top of the placement section c) heating the uppermost sheet to melt at least a part of the thermoplastic resin and adhering it to the lower sheet; and (d) constructing the shaped article based on the modeling data of the uppermost sheet It cuts into an effective field and an unnecessary field which does not constitute a modeling thing, and it is characterized by modeling a modeling thing by performing repeatedly the above-mentioned (a)-(d). When the first sheet is placed on the placement unit, the cutting process is performed without heating (adhesion) because there is no lower order sheet. That is, the process (c) is skipped after the process (b) and the process (d) is performed.

  According to this configuration, the upper sheet and the lower sheet are adhered to each other by the thermoplastic resin contained in each sheet. Therefore, since an adhesive layer does not intervene between sheets, a high-precision molded article can be formed. Furthermore, since the sheet | seat from which a part of unnecessary area | region, for example, the part corresponding to a recessed part and a hollow part in a modeling thing was removed is laminated | stacked, the modeling thing of a hollow structure can be created.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the structure of the modeling apparatus concerning 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS The schematic diagram which shows the modeling method of the molded article concerning 1st Embodiment. Schematic which shows the structure of the modeling apparatus concerning 2nd Embodiment. The schematic diagram which shows the modeling method of the molded article concerning 2nd Embodiment.

  Hereinafter, first and second 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 different from the actual scale in order to make each member or the like to be recognizable.

First Embodiment
First, the configuration of the modeling apparatus will be described. The shaping apparatus is effective to configure a shaped object based on the modeling data, the placement unit on which the sheet in which the fibers are bound by the thermoplastic resin is placed, and the first sheet placed on the placement unit. An unnecessary area is obtained by a cutting unit that cuts into an area and an unnecessary area that does not constitute a shaped object, a removing section that cuts and removes a part of the unnecessary area of the first sheet cut by the cutting unit, A laminating unit for stacking the second sheet on the removed first sheet, and a heating unit for heating the second sheet to melt at least a part of the thermoplastic resin and bonding it to the first sheet; An apparatus for forming a shaped object by repeatedly cutting the sheet by the cutting unit, removing the unnecessary area from the sheet by the removing unit, stacking the sheets by the laminating unit, and bonding the sheet by the heating unit. is there. In addition, the shaping apparatus according to the present embodiment deposits a mixture in which a thermoplastic resin is mixed with a fibrillation unit that fibrillates a raw material containing fibers in the atmosphere, and a fibrillation material fibrillated by the fibrillation unit. A deposition unit, and a forming unit configured to press and heat a deposit deposited by the forming unit to form a sheet, and is configured to form a shaped object using the sheet formed by the forming unit. . The specific configuration will be described below.

  FIG. 1 is a schematic view showing the configuration of a modeling apparatus according to the present embodiment. As shown in FIG. 1, the modeling apparatus 1 of 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 feeding unit 60, a deposition unit 70, a forming unit 120, a sheet cutter unit 130, etc. The modeling unit 3 includes a stacking unit 140, a placement unit 150, a cutting unit 160, a removing unit 165, a heating unit 170, and the like. And in the modeling apparatus 1, the sheet | seat shape | molded by the sheet | seat manufacturing part 2 is comprised so that the modeling part 3 may be supplied. Moreover, the control part 8 which controls said each part 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 for stacking and storing a plurality of waste paper Pu, and an automatic feeding mechanism 12 capable of continuously feeding the waste paper Pu in the tray 11 to the crushing unit 20. The waste paper Pu to be supplied to the sheet manufacturing unit 2 is, for example, A4 size paper which is currently mainstream at the office.

  The crushing unit 20 is for cutting the supplied waste paper Pu into pieces of several centimeters square. The crushing unit 20 is provided with a crushing blade 21 so as to constitute an apparatus in which the cutting width of a normal shredder blade is expanded. Thus, the supplied waste paper Pu can be easily cut into pieces of paper. Then, the divided crushed paper is supplied to the defibrating unit 30 through the pipe 201.

  The fibrillation unit 30 fibrillates a raw material containing fibers in the air. Specifically, the defibrating unit 30 includes a rotating rotary blade (not shown), and performs disaggregation to break up the crushed paper supplied from the crushing unit 20 into a fibrous form. In the present application, those that are fibrillated by the fibrillation unit 30 are referred to as disintegrated materials, and those that have passed through the fibrillation unit 30 are referred to as disintegrated materials. The defibrating unit 30 of the present embodiment performs defibrating in air in a dry manner. By the defibrating treatment of the defibrating unit 30, the printed ink, toner, coating material to paper such as anti-smearing material become particles of several tens μm or less (hereinafter referred to as "ink particles") and fibers Separate from. Therefore, the defibrated material coming out of the defibrating unit 30 is the fibers and the ink particles obtained by the defibration of the paper piece. The air flow is generated by the rotation of the rotary blade, and the defibrated fibers are carried on the air flow and conveyed to the classification unit 40 in the air via the pipe 202. In addition, an air flow generator for generating an air flow for conveying the defibrated fibers to the classification unit 40 may be separately provided in the defibration unit 30.

  The classification unit 40 classifies the introduced material introduced by air flow. In the present embodiment, the defibrated material as an introduction is classified into ink particles and fibers. The classification unit 40 can, for example, air-classify the transported defibrated material into ink particles and fibers by applying a cyclone. In addition, it may change to a cyclone and may use another kind of airflow type classifier. In this case, an elbow jet, an Eddy classifier, or the like is used as an air flow classifier other than the cyclone, for example. The air flow type classifier generates swirling air flow and separates and classifies according to the difference in centrifugal force received by the size and density of the defibrated material, and the classification point can be adjusted by adjusting the air flow velocity and centrifugal force. . As a result, the ink particles can be divided into relatively small and low density ink particles and high density fibers larger than the ink particles.

  The classification unit 40 according to the present embodiment is a tangent input type cyclone, and the introduction port 40a into which the introduced material is introduced from the defibration unit 30, the cylinder section 41 with the introduction port 40a tangentially, and the lower section of the cylinder section 41 And a lower outlet 40b provided at the lower part of the conical portion 42, and an upper exhaust port 40c provided at the upper center of the cylindrical portion 41 for discharging fine powder. The conical portion 42 is reduced in diameter downward in the vertical direction.

  In the classification process, the air flow loaded with the defibrated material introduced from the introduction port 40a of the classification unit 40 is changed into circumferential motion at the cylindrical portion 41 and the conical portion 42, and the defibrated material is classified by centrifugal force. Then, the fiber having a larger density and higher density than the ink particle moves to the lower outlet 40b, and the relatively smaller and lower density ink particle is discharged to the upper exhaust port 40c as fine powder together with air. Then, the ink particles are discharged from the upper exhaust port 40 c of the classification unit 40. Then, the discharged ink particles are collected by the receiving unit 80 through the pipe 206 connected to the upper exhaust port 40 c of the classification unit 40. On the other hand, a classified material containing fibers classified from the lower outlet 40b of the classification unit 40 through the pipe 203 is transported in the air toward the classification unit 50. From classification part 40 to sorting part 50, it may be transported by an air flow at the time of classification, or may be transported from classification part 40 located above to sorting part 50 located below by gravity. In addition, you may arrange | position the suction part etc. for attracting | sucking a short fiber mixture efficiently from the upper exhaust port 40c in the upper exhaust port 40c of the classification part 40, piping 206 grade | etc.,. Classification can not be accurately divided at a certain size or density. Also, it can not be accurately 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. Among the ink particles, relatively large ones are discharged from the lower outlet 40b together with the fibers.

  The sorting unit 50 is for sorting by passing through a sieve unit 51 having a plurality of openings a classified material (fibrillated material) containing fibers classified by the classification unit 40. Furthermore, specifically, the classified material including the fibers classified by the classification unit 40 is sorted into a passing material passing through the opening and a residue not passing through the opening. The sorting unit 50 of the present embodiment is provided with a mechanism for dispersing the classified matter in the air by rotational movement. Then, the passing material which has passed through the opening by the sorting of 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 which has not passed through the opening by the sorting of the sorting unit 50 is returned to the defibration unit 30 again as a defibrated material through the pipe 205. Thus, the residue is reused (reused) without being discarded.

  The material passing through the opening by the sorting of the sorting unit 50 is transported in the air to the depositing unit 70 through the pipe 204. The sorting unit 50 may be transported by a blower (not shown) that generates an air flow, or may be transported by gravity from the sorting unit 50 above to the stacking unit 70 below. Between the sorting unit 50 and the deposition unit 70 in the pipe 204, an additive feeding unit 60 is provided, which adds a thermoplastic resin to the transported material (opened material). The thermoplastic resin to be mixed with the passing material (defibrated material) is in the form of powder or fiber. This makes it possible to reliably bind the fibers of the defibrated material. In addition to the thermoplastic resin, for example, a flame retardant, a whiteness improving agent, a sheet power enhancing agent, a sizing agent, an absorption modifier, an aromatic agent, a deodorizing agent, etc. can be added to the transported material to be transported It is. These additives are stored in the additive storage unit 61, and are input from the input port 62 by an input mechanism (not shown).

  The deposition unit 70 is capable of depositing a material including fibers, and deposits a mixture of a thermoplastic resin mixed with the defibrated material disintegrated by the disintegration unit 30. Specifically, the deposition unit 70 deposits the mixture containing fibers and thermoplastic resin supplied from the piping 204 to form the web W, and has a mechanism for uniformly dispersing the fibers in air. Have. The deposition unit 70 also 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 by the tension roller 72 and the endless mesh belt 73 in which the mesh was formed. The mesh belt 73 is stretched by a stretching roller 72. The mesh belt 73 is configured to rotate (move) in one direction by rotating at least one of the stretching rollers 72. In addition, the web W concerning this embodiment means the structure form of the object containing a fiber and a thermoplastic resin. Therefore, the web is shown as a web even when the form of dimensions etc. changes during heating, pressurization, cutting, conveyance, etc. of the web.

  First, as a mechanism for uniformly dispersing the fibers in the air, a forming drum 71 into which the fibers and the thermoplastic resin are charged is disposed in the deposition unit 70. Then, by driving the forming drum 71 to rotate, 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) in the passing material (fiber), and at the same time the mixture of fibers and fibers and thermoplastic resin having passed through the small holes is made uniform in the air. Can be dispersed in

  Below the forming drum 71, a mesh belt 73 is disposed. Further, a suction device 75 as a suction unit for generating an air flow directed vertically downward via the mesh belt 73 is provided vertically below the forming drum 71. The suction device 75 can suck the fibers dispersed in the air onto the mesh belt 73.

  Then, 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 containing fibers and a thermoplastic resin and deposited in a long shape. By continuously performing the dispersion from the forming drum 71 and the movement of the mesh belt 73, a belt-like continuous web W is formed. The mesh belt 73 may be made of metal, resin, or non-woven fabric, and may be anything as long as fibers can be deposited and air can pass through. When the diameter of the mesh belt 73 is too large, the fibers enter the mesh and become uneven when the web W (sheet) is formed. On the other hand, when the diameter of the mesh is too small, the suction device 75 stabilizes. It is difficult to form an air stream. For this reason, it is preferable to adjust the hole diameter of the mesh appropriately. The suction device 75 can be configured by forming a closed box having 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 more negative pressure than the outside air.

  The web W molded on the mesh belt 73 is conveyed by the rotational movement of the mesh belt 73 in accordance with the conveyance direction (open arrow in the figure). 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 from the mesh belt 73 by the intermediate conveyance unit 90 and conveyed to the pressing unit 110 side. That is, it has the peeling part (intermediate conveyance part 90) which peels a deposit (web W) from a movement part (mesh belt 73), and the sediment (web W) which peeled can be conveyed to pressurization part 110. The intermediate conveyance unit 90 is configured to be able to convey the web W while suctioning the web W vertically upward (in a direction in which the web W is separated from the mesh belt 73). The intermediate conveyance unit 90 is disposed to be vertically separated from the mesh belt 73 (in a direction perpendicular to the surface of the web W), and partially deviates from the mesh belt 73 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 stretching roller 72 a on the downstream side of the mesh belt 73 to the pressing unit 110.

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

  The suction chamber 93 is disposed inside the conveyance 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 conveyance belt 91 located below) Is open. In addition, 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 unit, the internal space of the suction chamber 93 is sucked, and air flows from the bottom of the suction chamber 93. As a result, an air flow directed to the upper side of the suction chamber 93 is generated, and the web W can be sucked from the upper side of the web W and adsorbed onto the transport belt 91. The transport belt 91 can move (rotate) by rotation of the tension roller 92 and transport the web W toward the pressure unit 110. Further, since the suction chamber 93 partially overlaps the mesh belt 73 as viewed from above and is disposed at a downstream position not overlapping the suction device 75, the web W on the mesh belt 73 is a suction chamber. The mesh belt 73 can be peeled off from the mesh belt 73 at a position facing the roller 93 and can be attracted to the conveyance belt 91. The tension roller 92 rotates so that the transport belt 91 moves at the same speed as the mesh belt 73. If there is a difference between the speeds of the mesh belt 73 and the transport belt 91, it is possible to prevent the web W from being pulled and broken or buckled at the same speed.

  A pressure unit 110 is disposed downstream 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 presses the web W conveyed. For example, the pressing unit 110 presses the web W having a thickness of about 1⁄5 to 1/30 of the thickness of the web W formed in the deposition unit 70. Thereby, the strength of the web W can be improved.

  The forming unit 120 is disposed downstream of the pressing unit 110 in the transport direction of the web W. The forming unit 120 heats the web W as the deposit deposited in the depositing unit 70 at the first heating temperature, and bonds the fibers contained in the web W via the thermoplastic resin. The first heating temperature in the molding unit 120 is set to a temperature equal to or higher than the melting point of the thermoplastic resin. As a result, it becomes possible to melt the thermoplastic resin and reliably bind the fibers of the defibrated material, and it is possible to form a belt-like sheet Pr '(web W). In the present embodiment, the deposited web W is heated at the first heating temperature while being pressurized. Specifically, the forming unit 120 is configured by a pair of heating rollers 121 and 122. A heating member such as a heater is provided at the center of the rotational axis of the heating rollers 121 and 122, and the web W is heated by passing the web W between the pair of heating rollers 121 and 122. It can be pressurized. Then, the web W is heated and pressurized by the pair of heating rollers 121 and 122, so that the thermoplastic resin is melted to be easily entangled with the fibers, and the fiber spacing is shortened and the contact point between the fibers is increased.

  As the sheet cutter unit 130 for cutting the web W on the downstream side in the conveyance direction of the forming unit 120, the first sheet cutter unit 130a for cutting the web W along the conveyance direction of the web W intersects with the conveyance direction of the web W The second sheet cutter unit 130 b is arranged to cut the web W in the direction in which the sheet W is cut. The first sheet cutter portion 130 a is, for example, a slitter, and cuts the sheet W in accordance with a predetermined cutting position in the transport direction of the web W. The second sheet cutter unit 130 b is, for example, a rotary cutter, and cuts the continuous web W into a sheet-like form (single sheet form) according to a cutting position set to a predetermined length. Thereby, a sheet Pr (web W) of a desired size is formed.

  In addition, the sheet | seat concerning the said embodiment mainly uses what used fibers as fibers, such as waste paper and pure pulp, as a raw material, and made it into a sheet form. However, the present invention is not limited to such, and may be in the form of a board or a web (or a shape having unevenness). Further, as a raw material, vegetable fibers such as cellulose, chemical fibers such as PET (polyethylene terephthalate), polyester, and animal fibers such as wool and silk may be used. In the present application, the sheet is divided into paper and non-woven fabric. Paper includes a thin sheet form and the like, and includes recording paper for writing and printing, wallpaper, wrapping paper, colored paper, Kent paper and the like. Non-woven fabrics are thicker than paper and have low strength, and include non-woven fabrics, fiber boards, tissue papers, kitchen papers, cleaners, filters, liquid absorbers, sound absorbers, shock absorbers, mats and the like.

  Further, in the present embodiment, waste paper mainly refers to printed paper, but if it is made into a material formed as paper, it is regarded as waste paper regardless of whether it is used or not.

Next, the configuration of the shaping 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 150 a. The placement surface 150 a of the placement unit 150 has a flat surface on which the sheet Pr is placed. Here, the statement that the sheet Pr is placed on the placement unit 150 in the present embodiment is not only placing the sheet Pr directly on the placement surface 150a, but is already placed on the placement surface 150a. It 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. In addition, it has a first detection unit (not shown) for detecting the position (height) in the vertical direction of the placement unit 150 (placement surface 150a), and the placement unit based on detection information by the first detection unit The position of 150 in the vertical direction is controlled. And, each time the sheets Pr are placed (stacked) on the placement unit 150, the placement unit 150 is configured to be movable downward in the vertical direction such that the height of the stacked sheets Pr is at 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 (for example, ten sheets). Alternatively, the loading unit 150 may be moved by a predetermined amount according to the thickness of the sheet Pr without providing the first detection unit.

  The cutting unit 160 is configured to cut the sheet Pr placed on the placement unit 150 into an effective area that configures a shaped object and an unnecessary area that does not configure a shaped object, based on the modeling data. The cutting unit 160 is an XY cutting plotter (not shown in the drawings, which is not shown in the figure, hereinafter simply referred to as an XY plotter), which moves horizontally based on the cutting blade 160a and the cutting drive signal fixed from the cutting blade 160a and transmitted from the controller 8. And). The cutting blade 160 a can cut the sheet Pr placed (laminated) on the placement unit 150 two-dimensionally by an XY plotter. In addition, the structure of the cutting part 160 may apply a laser cutter, an ultrasonic cutter, etc. suitably besides cutters, such as a cutting blade 160a.

  The removing unit 165 is configured to cut and remove a part of the unnecessary region of the sheet Pr cut by the cutting unit 160. The removing unit 165 is, for example, an end mill, and an XY plotter (not shown) which moves horizontally based on a rotating cutting blade 165 a and a cutting drive signal fixed from the cutting blade 165 a and transmitted from the control unit 8. And consists of The cutting blade 165a can cut the sheet Pr placed (laminated) on the placement unit 150 in a two-dimensional manner by an XY plotter. In addition to the end mill having the cutting blade 165 a and the like, various kinds of cutters, a laser cutter, an ultrasonic cutter, and the like may be appropriately applied to the configuration of the removing unit 165.

  The stacking unit 140 stacks another sheet Pr on the sheet Pr placed on the placement unit 150. Specifically, the second sheet Pr2 is stacked on the first sheet Pr1 from which a part of the unnecessary region has been removed by the removing unit 165. The stacking unit 140 of the present embodiment is disposed downstream of the second sheet cutter unit 130 b of the sheet manufacturing unit 2 in the transport direction, and includes a pair of transport rollers 141 and 142. In addition, in order to stack the second sheet Pr2 on the first sheet Pr1, the configuration for moving the placement surface 150a of the placement unit 150 in the vertical direction is also regarded as a part of the stacking unit 140. Can. Thus, 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 placed on the placement unit 150.

  The heating unit 170 is disposed above 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 are removed. The two sheets Pr2 are adhered. At this time, at least a part of the resin contained in the second sheet Pr2 directly heated by the heating unit 170 is melted, and the first sheet Pr1 and the second sheet Pr2 are bonded. There is also a case where a part of the resin contained in the first sheet Pr1 melts and contributes to adhesion.

  The heating unit 170 of the present embodiment is configured to contact and press the second sheet Pr2 stacked on the first sheet Pr1 and to heat the second sheet Pr2. Since molding by pressing and bonding by heating are simultaneously performed, manufacturing efficiency can be enhanced. As a specific configuration of the heating unit 170, the iron portion 170a capable of partially pressing the surface of the sheet Pr placed on the placing portion 150, and the iron portion 170a are heated to the second heating temperature of the predetermined temperature. And a possible heater unit (not shown). That is, in the heating unit 170 of the present embodiment, the tip end surface of the iron portion 170a is smaller than the surface of the sheet Pr, and partially contacts the sheet Pr placed on the placement unit 150 to apply pressure heating. It is configured as follows. Therefore, for example, the first sheet Pr1 and the second sheet Pr2 are adhered by heating only the part (area) of the sheet Pr excluding the part (a part of the unnecessary area) cut by the removing part 165. Since the portion to be cut by the removing unit 165 is not heated, that is, the first sheet Pr1 and the second sheet Pr2 are not bonded and relatively soft, the removing process can be easily performed.

  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 the present embodiment, the heating unit 170 includes a drive unit such as a motor, and is configured to be movable in the vertical direction, and the heating unit 170 is moved downward with respect to the placement unit 150 and placed on the placement unit 150. The placed sheet Pr is configured to be pressed and heated. Also, a second detection unit (not shown) for detecting the position (height) in the vertical direction of the heating unit 170 is controlled, and the position in the vertical direction of the heating unit 170 is controlled based on detection information by the detection unit, The sheet Pr laminated at a predetermined position can be pressurized and heated. Alternatively, if the placement unit 150 is controlled so that the position (height) of the uppermost sheet Pr stacked on the placement surface 150 a of the placement unit 150 is always the same, the second detection unit Even if it does not exist, pressure heating can be performed by moving the heating unit 170 (the tip end surface of the trowel portion 170a) to a predetermined position.

  Further, the second heating temperature of the heating unit 170 is set to a temperature that is equal to or higher than the first heating temperature (above the melting point of the thermoplastic resin) in the molding unit 120. Thereby, the first sheet Pr1 and the second sheet Pr2 can be reliably adhered.

  And in modeling device 1 constituted as mentioned above, control part 8 carries out drive control of each part which constitutes sheet manufacturing part 2, and forms sheet Pr. Further, the control unit 8 controls driving of the placement unit 150, the cutting unit 160, the removing unit 165, and the heating unit 170. Then, the first sheet Pr1 molded by the sheet manufacturing unit 2 is placed on the placement unit 150 by the stacking unit 140. The control unit 8 converts two-dimensional information data (slice data) representing the cross-sectional shape of the three-dimensional object into raster data based on the modeling data (information representing the shape of the three-dimensional object) and supplies the raster data to the cutting unit 160 . Raster data is data representing the cross-sectional shape of a three-dimensional object, one side of the contour of the cross-sectional shape is an effective area constituting a three-dimensional object (model) and the other side does not constitute a three-dimensional object (model) It is an unnecessary area. Information representing the shape of the three-dimensional object is supplied by, for example, a three-dimensional CAD system. Then, the cutting unit 160 cuts the first sheet Pr1 based on raster data. The raster data corresponds to the first sheet Pr1. Then, the removing unit 165 is driven to cut a part of the unnecessary area in the first sheet Pr1 and remove a part of the unnecessary area. Specifically, after a plurality of sheets Pr are laminated, a portion which is difficult to remove (for example, a portion to be a concave portion or a hollow portion of a shaped object) is removed. Subsequently, the second sheet Pr2 is stacked on the first sheet Pr1 from which the unnecessary area has been removed by the removing unit 165. Then, the heating unit 170 is lowered to the mounting unit 150 side, and the iron portion 170a is brought into contact with the second sheet Pr2, and the second sheet Pr2 is partially pressurized and heated to form the first sheet Pr1 and the second sheet Pr2. The second sheet Pr2 is adhered. Then, the second sheet Pr2 is cut based on raster data corresponding to the second sheet Pr2. Then, the removing unit 165 is driven to cut a part of the unnecessary area in the second sheet Pr2 and remove a part of the unnecessary area. That is, the uppermost sheet (first sheet Pr1) on the placement unit 150 is cut, and a part of the unnecessary area of the uppermost sheet (first sheet Pr1) is removed, and the uppermost sheet (first The other sheet (the second sheet Pr2) is stacked on the first sheet Pr1), and the other top sheet (the second sheet Pr2) that has newly become the top is heated to be the lower sheet (the first sheet). It adheres to the sheet Pr1). Similarly, the top sheet is cut, a part of the unnecessary area is removed from the top sheet, another sheet is laminated, and the other top sheet newly heated is subordinately These series of processes are repeated to bond with the sheet. Thus, in the shaping apparatus 1, the cutting of the sheet Pr by the cutting unit 160, the removal of a part of the unnecessary area by the removing unit 165, the stacking of the sheet Pr onto the placement unit 150 by the stacking unit 140, and heating By repeatedly performing the bonding of the sheet Pr by the part 170, it is possible to form a shaped object.

  Next, a method of forming a shaped object will be described. In the present embodiment, a case where a shaped object is shaped using the shaping apparatus 1 will be described. In the method for producing a shaped article of the present embodiment, (a) a sheet in which fibers are bound by a thermoplastic resin is placed on the placement unit, and (b) the first sheet placed on the placement unit is Based on the formation data, cut into an effective area constituting the object and an unnecessary area not constituting the object, (c) cutting and removing a part of the unnecessary area of the first sheet, (d) Stacking the second sheet on the first sheet from which the unnecessary area has been removed, and (e) heating the second sheet to melt at least a part of the thermoplastic resin and bond it to the first sheet, (F) The second sheet is cut into an effective area constituting the shaped object and an unnecessary area not constituting the shaped object based on the formation data, and by repeatedly performing (c) to (f), the formed article It is to shape. In addition, in this embodiment, the case where the cylindrical shaped article M having the hollow portion M1 is shaped is described. FIG. 2: is a schematic diagram which shows the modeling method of the molded article concerning this embodiment.

  First, as shown in FIG. 2A, a first sheet Pr1 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) a first sheet Pr1 in which 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.

  Then, as shown in FIG. 2B, the first sheet Pr1 placed on the placement unit 150 is not required to form an effective area V1 that configures the object M based on the formation data, and does not configure the object It is cut into regions U (U11, U12). Specifically, the cutting unit 160 is driven based on raster data corresponding to the first sheet Pr1 based on the formation data to cut the first sheet Pr1. In the present embodiment, cutting is performed along the contour C11 and the contour C12. An area surrounded by the outline C11 and the outline C12 which constitute the object M (see FIG. 2H) is an effective area V1. An area other than the effective area V1, that is, an area surrounded by the outline C11 is the unnecessary area U11, and an area from the outline C12 to the outer peripheral edge of the first sheet Pr1 is the unnecessary area U12. Further, as shown in FIG. 2B, the unnecessary region U12 is cut so as to be divided to form a dividing line DL (DL1). Specifically, the dividing line DL (DL1) is formed by cutting the first sheet Pr1 toward the outer peripheral edge of the first sheet Pr1 at a predetermined interval from the outline C12 of the effective area V1. The dividing line DL (DL1) is for facilitating removal of the unnecessary area Un2 from the laminate of the sheet Pr (laminate) and removal of the effective area V1 (model M) after completion of the forming process, The unnecessary area Un2 (see FIG. 2G) can be divided into a plurality of parts in three dimensions and eliminated. The number of division lines DL can be appropriately set in accordance with the shape of the object M and the like. The dividing line DL is set based on dividing line data obtained by converting the 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 stands by until the second sheet Pr2 is supplied.

  Next, as shown in FIG. 2C, a part of the unnecessary area U of the first sheet Pr1 is cut and removed. Specifically, the removing unit 165 is driven based on raster data corresponding to the first sheet Pr1 based on the formation data, and the unnecessary area U11 of the first sheet Pr1 is cut. That is, a portion corresponding to the hollow portion M1 of the shaped portion M is cut. Note that compressed air may be blown to the cut portion (unnecessary area U11) while cutting by the removing unit 165 as necessary. In this way, chips can be easily removed.

  Next, as shown in FIG. 2D, the second sheet Pr2 is stacked on the first sheet Pr1 from which the unnecessary area U11 has been removed. Specifically, the second sheet Pr2 manufactured by the sheet manufacturing unit 2 is placed on the first sheet Pr1 placed on the placement unit 150 by the stacking unit 140 of the modeling unit 3. Stack sheets Pr2.

  Then, the second sheet Pr2 is heated at the second heating temperature to melt at least a part of the thermoplastic resin and to bond it to the first sheet Pr1. Specifically, the heating unit 170 is lowered to the mounting unit 150 side, the tip end surface of the iron portion 170a is brought into contact with the second sheet Pr2 surface, and the stacked second sheets Pr2 are pressurized and heated. In the present embodiment, the second sheet Pr2 is partially pressurized and heated. Specifically, the heating unit 170 is driven based on raster data corresponding to the second sheet Pr2 based on the formation data to apply pressure heating to the area other than the unnecessary area U21 in the second sheet Pr2. Do. Then, after the predetermined pressure heating, the heating unit 170 is moved upward from the mounting unit 150. Thereby, the first sheet Pr1 and the second sheet Pr2 are partially adhered.

  Then, as shown in FIG. 2 (e), the second sheet Pr2 is cut into an effective area V2 constituting the object M and unnecessary areas U21 and U22 not constituting the object, based on the formation data. . Specifically, the cutting unit 160 is driven based on raster data corresponding to the second sheet Pr2 based on the formation data to cut the second sheet Pr2. In the present embodiment, cutting is performed along the contour C21 and the contour C22. The area surrounded by the outline C21 and the outline C22 constituting the object M (refer to FIG. 2H) is the effective area V2, and the area other than the effective area V2, ie, the area C21. The area is the unnecessary area U21, and the area from the contour C22 to the outer peripheral edge of the second sheet Pr2 is the unnecessary area U22. Further, as shown in FIG. 2E, the unnecessary area U22 is cut so as to be divided to form a dividing line DL (DL2). Specifically, the dividing line DL (DL2) is formed by cutting the second sheet Pr2 toward the outer peripheral edge of the second sheet Pr2 at a predetermined interval from the outline C22 of the effective region V2.

  Next, as shown in FIG. 2 (f), a part of the unnecessary area U of the second sheet Pr2 is cut and removed. Specifically, the removing unit 165 is driven based on raster data corresponding to the second sheet Pr2 based on the formation data, and the unnecessary area U21 of the second sheet Pr2 is cut. That is, a portion corresponding to the hollow portion M1 of the object M is cut. Here, the unnecessary area U21 is an area which is not pressurized and heated by the heating unit 170 in the process of adhering the first sheet Pr1 and the second sheet Pr2. That is, the unnecessary area U21 is an area where the first sheet Pr1 and the second sheet Pr2 are not adhered, and can be easily removed. In addition, while performing cutting by the removal part 165, you may spray compressed air on a cutting part (unnecessary area U21) as needed. In this way, chips can be easily removed. Then, the placement unit 150 is lowered by the thickness of the second sheet Pr2 and stands by until the next sheet Pr3 (not shown) is supplied.

  Then, another sheet Pr3 is stacked on the second sheet Pr2 from which the unnecessary area U21 has been removed, and the sheet Pr3 is partially pressurized and heated by the heating unit 170 and cut by the cutting unit 160 as described above. Next, the removing unit 165 removes a part of the unnecessary area. Repeat the above steps. Then, as shown in FIG. 2 (g), a predetermined number of sheets Prn (n is a natural number, representing the order of lamination) necessary for forming the shaped object M are stacked, and pressure heating, cutting and removal are performed. The driving of the shaping apparatus 1 is stopped when the process is finished.

  As shown in FIG. 2 (h), the stacked portion of the effective region V, ie, the hollow portion, that is, the hollow portion, is eliminated by removing the stacked portion of the unnecessary region Un2 from the stacked body in which the predetermined number of sheets Prn are stacked. The three-dimensional object M having the part M1 can be taken out.

  As described above, according to this 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 the same manner in which the fibers are bound by the thermoplastic resin are pressurized and heated by the heating unit 170 to obtain the first sheet Pr1. They are adhered to each other by the thermoplastic resin contained in the sheet Pr1 or the second sheet Pr2. Therefore, since the adhesive layer does not intervene between the first sheet Pr1 and the second sheet Pr2, it is possible to form the high-precision object M without a drop in the accuracy due to the variation of the adhesive layer thickness. Moreover, since the adhesive application process for bonding the first sheet Pr1 and the second sheet Pr2 is not necessary, the shaping efficiency of the object M can be improved. In addition, since the shaping apparatus 1 includes the sheet manufacturing unit 2, it is possible to efficiently form the shaped object M by utilizing the waste paper Pu. Furthermore, since the plurality of sheets Pr are stacked while removing the portion corresponding to the hollow portion M1 of the three-dimensional object M by the removing unit 165, the three-dimensional object M having the hollow portion M1 can be easily shaped.

Second Embodiment
Next, a second embodiment will be described. The modeling apparatus according to the present embodiment is a modeling apparatus that models a shaped object by laminating sheets in which fibers are bound by a thermoplastic resin, and based on the modeling data, a part of the unnecessary region that does not constitute the shaped object A removal unit for removing the sheet from the sheet, and a stacking unit for placing the sheet from which a part of the unnecessary area has been removed on the top of the placement unit, and heating the top sheet on the placement unit The heating unit for melting at least a part of the thermoplastic resin and adhering to the lower sheet, and the uppermost sheet, based on the formation data, to an effective area constituting the formed article and an unnecessary area not constituting the formed article A cutting unit for cutting, removal of a part of the unnecessary area from the sheet by the removing unit, stacking of the sheets by the laminating unit, adhesion of the sheet by the heating unit, and cutting of the sheet by the cutting unit Build a shaped object by repeating It is a device that. In addition, the shaping apparatus according to the present embodiment deposits a mixture in which a thermoplastic resin is mixed with a fibrillation unit that fibrillates a raw material containing fibers in the atmosphere, and a fibrillation material fibrillated by the fibrillation unit. A deposition unit, and a forming unit configured to press and heat a deposit deposited by the forming unit to form a sheet, and is configured to form a shaped object using the sheet formed by the forming unit. . The specific configuration will be described below.

  FIG. 3 is a schematic view showing the configuration of the modeling apparatus according to the present embodiment. As shown in FIG. 3, the modeling apparatus 1b of the present embodiment includes a sheet manufacturing unit 2 and a modeling unit 3b. In addition, since the structure of the sheet manufacturing part 2 is the same as the structure in 1st Embodiment, it abbreviate | omits description and demonstrates the structure of the modeling part 3b.

  The modeling unit 3 b includes a stacking unit 140, a placement unit 150, a cutting unit 160, a removing unit 168, a heating unit 171, and the like.

  The placement unit 150 has the same configuration as that of the first embodiment, and places the sheet Pr in which fibers are bound by a thermoplastic resin on the placement surface 150a. As will be described later, this embodiment is different from the first embodiment in that the sheet Pr on which a part of the unnecessary area is cut by the removing unit 168 is placed.

  As in the first embodiment, the cutting unit 160 sets the sheet Pr placed on the placement unit 150 into an effective area that configures a shaped object and an unnecessary area that does not configure a shaped object based on the modeling data. It is something to cut off.

  The removing unit 168 cuts and removes a part of the unnecessary area of the sheet Pr. The removing unit 168 of the present embodiment is, for example, a laser cutter, and emits a laser beam toward the sheet Pr to cut out a part of the unnecessary region of the sheet Pr.

  The stacking unit 140 stacks another sheet Pr on the sheet Pr placed on the placement unit 150. Specifically, the second sheet Pr2 from which a part of the unnecessary area has been removed by the removing unit 168 is stacked on the first sheet Pr1 cut by the cutting unit 160. The stacking unit 140 according to the present embodiment includes a pair of conveyance rollers 141 and 142 disposed downstream of the second sheet cutter unit 130 b of the sheet manufacturing unit 2 in the conveyance direction, and a pair of conveyance rollers 141 and 142 in the conveyance direction. It is comprised by a pair of conveyance roller 146,147 arrange | positioned downstream. In addition, in order to stack the second sheet Pr2 on the first sheet Pr1, the configuration for moving the placement surface 150a of the placement unit 150 in the vertical direction is also regarded as a part of the stacking unit 140. Can. Before placing the sheet Pr supplied from the sheet manufacturing unit 2 on the placement unit 150, the removal unit is directed to the sheet Pr supported by the pair of conveyance rollers 141 and 142 and the pair of conveyance rollers 146 and 147. The laser light is irradiated from 168 to remove a part of the unnecessary region of the sheet Pr.

  The heating unit 171 is disposed above the placement unit 150 and heats the sheet Pr placed on the placement unit 150, as in the heating unit 170 according to the first embodiment. However, the heating unit 171 according to the present embodiment is configured so as to press and heat the entire surface of the second sheet Pr2 stacked on the first sheet Pr1 by surface contact. This embodiment is different from the heating unit 170 of the embodiment of FIG. Specifically, the heating unit 171 sets the plate 171a of a size large enough to press the entire surface of the sheet Pr placed on the placement unit 150, and sets the plate 171a to the second heating temperature of a predetermined temperature. And a heatable heater unit (not shown). The pressing surface of the plate 171a is not attached to the pressed sheet Pr, and is subjected to a peeling treatment with a fluorine resin, silicon or the like so as to be easily peeled.

  As in the first embodiment, the heating unit 171 and the placement unit 150 are configured to be relatively movable in the vertical direction, and can heat the sheet Pr placed on the placement unit 150 at the second heating temperature. Is configured.

  And in modeling device 1b constituted as mentioned above, control part 8 carries out drive control of each part which constitutes sheet manufacture part 2, and forms sheet Pr. Further, the control unit 8 controls driving of the placement unit 150, the cutting unit 160, the removing unit 168, and the heating unit 171. Then, the first sheet Pr1 formed by the sheet manufacturing unit 2 is supported by the pair of conveyance rollers 141 and 142 and the pair of conveyance rollers 146 and 147 of the stacking unit 140. Then, based on raster data obtained by converting two-dimensional information data representing the cross-sectional shape of the three-dimensional object, laser light is irradiated from the removing unit 168 toward the first sheet Pr1, and a part of the unnecessary area is cut away. . The raster data corresponds to the first sheet Pr1. After that, the first sheet Pr1 is placed on the placement unit 150 by the stacking unit 140. Then, based on raster data corresponding to the first sheet Pr1, the cutting unit 160 cuts the first sheet Pr1. Subsequently, the second sheet Pr2 formed by the sheet manufacturing unit 2 is supported by the pair of conveyance rollers 141 and 142 and the pair of conveyance rollers 146 and 147 of the stacking unit 140. Then, the removing unit 168 removes a part of the unnecessary region from the second sheet Pr2 based on raster data corresponding to the second sheet Pr2, and the stacking unit 140 removes the unnecessary area onto the first sheet Pr1 of the placement unit 150. Stack the second sheet Pr2. Then, the heating portion 171 is lowered to the mounting portion 150 side, and the plate 171a is brought into contact with the second sheet Pr2, and the entire surface of the second sheet Pr2 is pressurized and heated to form the first sheet Pr1. The second sheet Pr2 is adhered. Then, the second sheet Pr2 is cut based on raster data corresponding to the second sheet Pr2. That is, a part of the unnecessary area is cut from the sheet Pr (the second sheet Pr2), and the sheet Pr (the second sheet Pr2) from which the part of the unnecessary area is cut is placed at the uppermost position on the placement unit 150. And heat the top sheet Pr (the second sheet Pr2) to bond it to the lower sheet Pr (the first sheet Pr1), and let the top sheet Pr (the second sheet Pr2) be an effective area. Cut into unnecessary areas. And a series of these processes are repeated. When the first sheet is placed on the placement unit, the lower sheet does not exist, so the cutting process is performed without the heating (adhesion) process. Thus, in the modeling apparatus 1b, removal of a part of the unnecessary region of the sheet Pr by the removing unit 168, stacking of the sheet Pr on the placement unit 150 by the stacking unit 140, and adhesion of the sheet Pr by the heating unit 171. By repeatedly performing cutting of the sheet Pr by the cutting unit 160, it is possible to form a shaped object.

  Next, a method of forming a shaped object will be described. In addition, in this embodiment, the case where a modeling object is modeled using modeling device 1b is explained. The method for producing a shaped article according to the present embodiment is a method for producing a shaped article in which sheets obtained by binding fibers with a thermoplastic resin are laminated to form a shaped article, and (a) a shaped article based on the shaping data A part of the unnecessary area which does not constitute is removed from the sheet, and (b) the sheet from which the part of the unnecessary area is removed is placed on the top of the placement unit, and (c) the top sheet Heat to melt at least a part of the thermoplastic resin and make it adhere to the lower sheet, (d) the uppermost sheet, based on the formation data, an effective region constituting the formation and unnecessary not to form the formation By cutting into regions and repeatedly performing (a) to (d), a shaped object is formed. In addition, in this embodiment, the case where the cylindrical shaped article M having the hollow portion M1 is shaped is described. FIG. 4: is a schematic diagram which shows the modeling method of the molded article concerning this embodiment.

  First, as shown in FIG. 4 (a), from the first sheet Pr1 in which the fibers are bound by the thermoplastic resin, a part of the unnecessary region not constituting the shaped article M is cut and removed based on the shaping data Do. Specifically, the sheet manufacturing unit 2 is driven to form (manufacture) a first sheet Pr1 in which the fibers are bound by a thermoplastic resin. Then, the stacking unit 140 is driven to support the first sheet Pr1 by the pair of conveyance rollers 141 and 142 and the pair of conveyance rollers 146 and 147. Then, the removal unit 168 is driven based on the raster data corresponding to the first sheet Pr1 based on the formation data, and the laser light is irradiated along the outline C11 that defines the unnecessary area U11 that does not constitute the formation, The unnecessary area U11 of the first sheet Pr1 is cut (cut). The unnecessary area U11 is a portion corresponding to the hollow portion M1 of the shaped portion M. In addition, you may spray compressed air toward the part (unnecessary area | region U11) cut | disconnected by the removal part 168 as needed. In this way, the cut portion can be easily removed.

  Next, as shown in FIG. 4B, the first sheet Pr1 from which the unnecessary area U11 has been removed is placed on the placement unit 150. Specifically, the stacking unit 140 is driven to place the first sheet Pr1 on the placement surface 150a of the placement unit 150.

  Then, as shown in FIG. 4C, the first sheet Pr1 placed on the placement unit 150 is not required to form an effective area V1 that configures the object M based on the formation data, and does not configure the object It is cut into a region U (U12). Specifically, the cutting unit 160 is driven based on raster data corresponding to the first sheet Pr1 based on the formation data to cut the first sheet Pr1. In the present embodiment, cutting is performed along the contour line C12. The area surrounded by the outline C11 and the outline C12 constituting the object M (see FIG. 4H) is the effective area V1, and the area other than the effective area V1, ie, the area surrounded by the outline C11 The area is the unnecessary area U11, and the area from the outline C12 to the outer peripheral edge of the first sheet Pr1 is the unnecessary area U12. In the present embodiment, when the first sheet Pr1 is placed on the placement unit 150, the unnecessary area U11 has already been removed. Further, as shown in FIG. 4C, the unnecessary region U12 is cut so as to be divided to form a dividing line DL (DL1). Specifically, the dividing line DL (DL1) is formed by cutting the first sheet Pr1 toward the outer peripheral edge of the first sheet Pr1 at a predetermined interval from the outline C12 of the effective area V1. The dividing line DL (DL1) is for facilitating removal of the unnecessary area Un2 from the laminate of the sheet Pr (laminate) and removal of the effective area V (model M) after completion of the forming process, The unnecessary area Un2 can be divided into a plurality of parts in three dimensions and eliminated. The number of division lines DL can be appropriately set in accordance with the shape of the object M and the like. The dividing line DL is set based on dividing line data obtained by converting the 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 stands by until the second sheet Pr2 is supplied.

  Then, as shown in FIG. 4D, the second sheet Pr2 formed by the sheet manufacturing unit 2 by driving the stacking unit 140 and using the pair of transport rollers 141 and 142 and the pair of transport rollers 146 and 147. Support. Then, the removal unit 168 is driven based on raster data corresponding to the second sheet Pr2 based on the formation data, and a laser is generated along the contour line C21 that defines the unnecessary area U21 that does not constitute the formed article of the second sheet Pr2. Light is irradiated to cut (cut out) the unnecessary area U21. The unnecessary area U21 is a portion corresponding to the hollow portion M1 of the shaped portion M. In addition, you may spray compressed air toward the part (unnecessary area | region U21) cut | disconnected by the removal part 168 as needed. In this way, the cut portion can be easily removed.

  Next, as shown in FIG. 4E, the second sheet Pr2 from which the unnecessary area U21 has been removed is stacked on the first sheet Pr1 from which the unnecessary area U11 has been removed and cut. Specifically, the second sheet Pr2 is stacked on the first sheet Pr1 placed on the placement part 150 by driving the stacking part 140.

  Then, the second sheet Pr2 is heated to melt at least a part of the thermoplastic resin and to be adhered to the first sheet Pr1. Specifically, the heating portion 171 is lowered to the mounting portion 150 side, the surface of the plate 171a is brought into contact with the surface of the second sheet Pr2, and the entire surface of the stacked second sheet Pr2 is collectively pressed and heated Do. Then, after the predetermined pressure heating, the heating unit 171 is moved upward from the mounting unit 150. As a result, the first sheet Pr1 and the second sheet Pr2 are entirely adhered.

  Next, as shown in FIG. 4 (f), the second sheet Pr2 is cut into an effective area V2 constituting the object M and an unnecessary area U22 not constituting the object based on the formation data. Specifically, the cutting unit 160 is driven based on raster data corresponding to the second sheet Pr2 based on the formation data to cut the second sheet Pr2. In the present embodiment, cutting is performed along the contour C22. The area surrounded by the outline C21 and the outline C22 constituting the object M (see FIG. 4H) is the effective area V2, and the area other than the effective area V2, ie, the area C21. The area is the unnecessary area U21, and the area from the contour C22 to the outer peripheral edge of the second sheet Pr2 is the unnecessary area U22. In the present embodiment, when the second sheet Pr2 is placed on the placement unit 150, the unnecessary area U21 has already been removed. Further, as shown in FIG. 4 (f), similarly to the dividing line DL1 of the first sheet Pr1, from the contour line C22 of the effective area V2 toward the outer peripheral edge of the second sheet Pr2 at a predetermined interval, The two sheets Pr2 are cut so as to be divided to form a dividing line DL (DL2). Then, the placement unit 150 is lowered by the thickness of the first sheet Pr1 and stands by until the next sheet Pr3 (not shown) is supplied.

  Next, similarly as described above, a part U31 of the unnecessary region is cut out of the sheet Pr3 by the removing unit 168, the sheet Pr3 is stacked on the second sheet Pr2 by the laminating unit 140, and pressure heating is performed by the heating unit 171. The cutting unit 160 cuts along the contour line C32 and the dividing line DL3. Repeat the above steps. Then, as shown in FIG. 4 (g), with respect to a predetermined number of sheets Prn (where n is a natural number and represents the order of stacking) necessary for forming the object M, a part Un1 of the unnecessary area Is cut, stacked, pressurized and heated, and the driving of the modeling apparatus 1b is stopped when a series of processes of cutting along the contour line Cn2 and the dividing line DLn are finished.

  As shown in FIG. 4 (h), the laminated portion of the effective region V, that is, the hollow portion, that is, the hollow portion, is eliminated by removing the laminated portion of the unnecessary region Un2 from the laminated body in which the predetermined number of sheets Prn are stacked. The three-dimensional object M having the part M1 can be taken out.

  As described above, according to the present embodiment, in addition to the effects of the first embodiment, the following effects can be obtained.

  Since the unnecessary area Un1 corresponding to the hollow portion M1 is removed by the removing section 168 at the stage before mounting (stacking) on the mounting section 150, it is easier than in the case where the unnecessary area Un1 is removed after stacking. The shaped object M having the hollow portion M1 can be shaped.

  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 is described below.

  (Modification 1) In the above embodiment, since the shaped object M is shaped using the sheet Pr formed using the fibers disintegrated by the sheet manufacturing unit 2, the shaped object M shaped is monochrome However, in order to solve this, a coloring unit may be provided in the modeling apparatus 1. Specifically, before stacking the second sheets Pr2 by the stacking unit 140, a configuration may be provided in which colored portions are used to color at least the outline portion of the effective area V1 of the first sheet Pr1. In this case, the colored portion is configured to color the first sheet Pr1 with a coloring liquid that is cured by heat or light. In this way, since the colored sheet Pr is stacked, it is possible to form a colored object M. In addition, the color developability is good and gloss can be obtained. Also, the moisture resistance can be improved.

  (Modification 2) In the above embodiment, the waste paper Pu is used as a raw material and supplied to model the object M, but the present invention is not limited to this. For example, as raw materials other than the waste paper Pu, for example, waste paper Pu with different fiber thickness and length, such as chemical fibers such as PET (polyethylene terephthalate) and polyester, wool, etc. may be supplied. In addition to the thermoplastic resin, a whiteness improver or the like may be added to the fiber. In this way, it is possible to form a wide variety of three-dimensional objects M having different textures and the like.

  (Modification 3) In the above embodiment, the first sheet cutter portion 130a (slitter) is disposed in the sheet cutter portion 130. However, the first sheet cutter portion 130a (slitter) may be omitted. Also in this case, the same effect as described above can be obtained, and the configuration of the modeling apparatus 1 can be simplified.

  (Modification 4) In the embodiment described above, the three-dimensional object M is formed using the sheet Pr formed into a single sheet by the sheet cutter unit 130, but the present invention is not limited to this configuration. For example, the configuration may be such that the object M is formed by laminating sheets cut out from continuous paper (roll paper or the like). Even in this manner, the same effect as described above can be obtained.

  (Modification 5) In the above embodiment, although the method of forming the three-dimensional object M having the hollow portion M1 is described as an example, the form of the forming portion M is not limited thereto, and various forms can be formed. . For example, a shaped part having a recess can be shaped. In this case, the sheets Pr may be stacked and shaped while removing the unnecessary regions corresponding to the concave portions by the removing portions 165 and 168. If it does in this way, the modeling part which has a crevice can be modeled easily.

  (Modification 6) In the above embodiment, two-dimensional information data (slice data) representing the cross-sectional shape of a three-dimensional object is converted into raster data, but may be converted into vector data. Then, based on the vector data, cutting by the removing unit 165 or cutting by the removing unit 168 or cutting by the cutting unit 160 may be performed.

  (Modification 7) Although in the first embodiment, the heating unit 170 is in contact with the surface of the sheet Pr and is pressurized and heated, the heating unit 171 of the second embodiment is applied instead of this. May be That is, the entire surface may be collectively pressed and heated while being in contact with the entire surface of the sheet Pr. In this way, since molding by pressure and adhesion by heating are simultaneously performed, the manufacturing efficiency can be enhanced.

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

  1, 1b: modeling apparatus, 2: sheet production section, 3, 3b: modeling section, 8: control section, 10: supply section, 20: crushing section, 30: defibrating section, 40: classification section, 50: sorting Section 60 Additive feeding section 70 Deposition section 90 Intermediate conveyance section 110 Pressing section 120 Forming section 121, 122 Heating roller 130 Sheet cutter section 130a First sheet cutter Section 130b: Second sheet cutter section 140: Stacking section 141, 142: Pair of conveyance rollers 146, 147: Pair of conveyance rollers 150: Mounting section 150a: Mounting surface 160: Cutting section 160a: cutting blade, 165: removing portion, 165a: cutting blade, 168: removing portion, 170: heating portion, 170a: trowel portion, 171: heating portion, 171a: plate.

Claims (11)

A placement unit on which a sheet obtained by mixing and binding a fiber and a thermoplastic resin is placed;
A cutting unit configured to cut the first sheet placed on the placement unit into an effective area that configures a shaped object and an unnecessary area that does not configure a shaped object based on the modeling data;
A removal unit that cuts and removes a part of the unnecessary area of the first sheet cut by the cutting unit;
A stacker configured to stack a second sheet on the first sheet from which the unnecessary area has been removed by the remover;
And a heating unit for melting at least a part of the thermoplastic resin mixed in the second sheet by heating and adhering it to the first sheet;
Forming a shaped object by repeating cutting of the sheet by the cutting unit, removal of an unnecessary area from the sheet by the removing unit, stacking of the sheets by the stacking unit, and adhesion of the sheet by the heating unit A modeling device that features. In the shaping apparatus according to claim 1,
The shaping apparatus, wherein the removing unit has a rotating cutting blade. A forming apparatus for forming a shaped object by laminating a sheet obtained by mixing and binding fibers and a thermoplastic resin,
A removal unit that removes from the sheet a part of the unnecessary area that does not constitute a shaped object based on the formation data;
A stacking unit for placing the sheet from which a part of the unnecessary area has been removed on the top of the placement unit;
At least a portion of the thermoplastic resin is mixed in the uppermost sheet on the mounting section, a heating section to be bonded with the lower sheet is melted by heating,
And a cutting unit configured to cut the uppermost sheet into an effective area constituting the object and an unnecessary area not constituting the object based on the formation data.
A three-dimensional object is obtained by repeating removal of a part of the unnecessary area from the sheet by the removal unit, stacking of the sheet by the stacking unit, adhesion of the sheet by the heating unit, and cutting of the sheet by the cutting unit. A modeling apparatus characterized by modeling. The shaping apparatus according to any one of claims 1 to 3.
The shaping apparatus, wherein the heating unit is in surface contact with the second sheet to apply pressure and heat. The shaping apparatus according to any one of claims 1 to 4.
A fibrillation unit that fibrillates a raw material containing fibers in the atmosphere;
A deposition unit for depositing a mixture of a thermoplastic resin mixed with the defibrated material disintegrated by the disintegration unit;
And a forming unit for forming a sheet by pressure heating the deposit deposited by the depositing unit, and forming the shaped object using the sheet formed by the forming unit. . In the shaping apparatus according to claim 5,
The shaping apparatus characterized in that the thermoplastic resin mixed with the defibrated material is in the form of powder or fiber. In the shaping apparatus according to claim 5 or 6,
The shaping apparatus, wherein the first heating temperature by the molding unit and the second heating temperature by the heating unit satisfy: melting point of the thermoplastic resin ≦ first heating temperature ≦ second heating temperature. The shaping apparatus according to any one of claims 1 to 7.
A molding apparatus characterized by comprising a colored portion for coloring at least a contour portion of the effective area of the sheet on the placement portion before stacking the sheets by the stacking portion. In the shaping apparatus according to claim 8,
The shaping apparatus, wherein the colored portion colors the sheet with a coloring liquid that is cured by heat or light. (A) The sheet obtained by mixing and binding the fiber and the thermoplastic resin is placed on the placement portion,
(B) cutting the first sheet placed on the placement unit into an effective area that constitutes a shaped object and an unnecessary area that does not constitute a shaped object, based on the formation data;
(C) cutting and removing a part of the unnecessary area of the first sheet;
(D) stacking a second sheet on the first sheet from which the unnecessary area has been removed;
(E) At least a portion of the thermoplastic resin mixed in the second sheet is melted by heating and adhered to the first sheet,
(F) cutting the second sheet into an effective area constituting the object and an unnecessary area not constituting the object based on the formation data;
A method for forming a shaped object, comprising forming the shaped object by repeatedly performing the above (c) to (f). A method for forming a shaped article, comprising forming a shaped article by laminating sheets bound by mixing a fiber and a thermoplastic resin.
(A) Based on the formation data, remove from the sheet a part of the unnecessary area not constituting the formation,
(B) placing the sheet from which a part of the unnecessary area has been removed on the top of the placement unit,
(C) melting at least a part of the thermoplastic resin mixed in the uppermost sheet by heating and adhering it to the lower sheet;
(D) cutting the topmost sheet into an effective area constituting the object and an unnecessary area not constituting the object based on the formation data;
A method for forming a shaped object, comprising forming a shaped object by repeatedly performing the steps (a) to (d).

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