JP2020094314A - Fibrous raw material molding method, mold, mesh mold, suction jig, and press mold - Google Patents

Abstract

To provide a mass production method of moldings having three-dimensional shape as designed by smooth water removal from a solution containing fibrous raw materials and mold release from the mold and suppressing shrinkage and deformation by drying of the fibrous raw materials.SOLUTION: A molding is molded by a fibrous raw material molding method including: a mesh step of retaining on the concave side of a mesh mold a solution containing a fibrous raw material by using the mesh mold having a mesh half body part having 3 dimensional shape; a water removal step of forming a closed space covering the mesh mold using a suction jig and removing water from the fibrous raw material by suction of the fibrous raw material; a transfer step of forming a closed space covering the mold using a suction jig, mold-releasing the fibrous raw material from the mesh mold and transferring to the mold; and a molding pressing process by pressing the fibrous raw material using a press mold composed of a projection type press mold and a recess type press mold to mold.SELECTED DRAWING: Figure 20

Description

INDUSTRIAL APPLICABILITY According to the present invention, a fibrous raw material-containing solution is strained with a straining die, a water suction step of the fibrous raw material-containing solution and a step of transferring the fibrous raw material to a molding die suitable for molding a three-dimensional shape, and maintaining the three-dimensional shape The present invention relates to a fibrous raw material molding method suitable for mass production of molded articles having a three-dimensional shape using a fibrous raw material and having a molding and pressing step suitable for drying.

As a conventional technique for forming a three-dimensional shape using a raw material of Japanese paper or Japanese paper, there are an outer mesh papermaking method and a method of manufacturing a three-dimensional paper container using a papermaking mold.

JP-A-11-222800

According to the prior art, the fibrous raw material-containing solution can be integrally molded by a molding die having a three-dimensional shape, but the manufacturing cost of the papermaking mold by metal press molding is high, and mass production of molded products is possible. In this case as well, it is necessary to prepare manufacturing equipment with sufficient pressure resistance.

Means for Solving the Invention

The present invention is a fibrous raw material molding method for molding a fibrous raw material into a predetermined three-dimensional shape, which has a mesh-shaped three-dimensional shape part formed by molding a mesh material along the outer shape of the three-dimensional shape. Using a straining mold, a straining step of retaining the fibrous raw material from the fibrous raw material-containing solution containing the fibrous raw material on the concave surface side of the mesh-shaped three-dimensional shape portion, and the outer shape of the three-dimensional shape A forming die having a three-dimensional shaped portion formed in the same shape, wherein the fibrous raw material retained in the forming die having a large number of through-holes and the mesh-like three-dimensional forming portion of the straining die and the forming The three-dimensional shaped portion of the forming die is fitted and inserted from the concave surface side of the mesh-shaped three-dimensional shaped portion of the mold so that it is located between the three-dimensional shaped portion of the mold and the three-dimensional shaped portion. And an auxiliary pressing step of pressing the fibrous raw material by the molding die, and forming a closed space covering the flat surface side of the molding die from the flat surface side of the molding die by using a suction jig. A fiber having a transfer step of sucking the fibrous raw material and the closed space from the convex surface side to the flat surface side of the molding die, releasing the fibrous raw material from the straining die and transferring the fibrous raw material to the molding die. It is a raw material molding method.

The present invention, after the auxiliary pressing step, by using the suction jig from the convex surface side of the mold, to form a closed space covering the convex surface side of the mold, from the flat side of the mold It is a fibrous raw material molding method having a moisture removing step of sucking the fibrous raw material and the closed space toward the convex surface side of the straining die to remove moisture from the fibrous raw material.

The present invention provides a convex pressing die having a convex surface portion formed by releasing the fibrous raw material from the molding die after the transferring step and molding along the outer shape of the three-dimensional shape, and the convex pressing die. Using a press die configured with a concave press die having a concave surface portion that fits into the convex surface portion, the fibrous raw material released from the molding die is fitted onto the concave surface portion of the concave press die. In a fibrous raw material molding method having a molding and pressing step of fitting and inserting the convex surface portion of the convex press die onto the fibrous raw material that has been fitted and inserted, and pressing and molding the fibrous raw material. is there.

The present invention relates to a molding die for molding a fibrous raw material into a predetermined three-dimensional shape, the three-dimensional shape portion having a shape substantially the same as the outer shape of the three-dimensional shape, and the periphery of the three-dimensional shape portion. The three-dimensional shape portion has a shape formed by reducing the surface layer of the outer shape of the three-dimensional shape to be a half of the three-dimensional shape, and the planar portion has a large number of through holes. It is a forming die characterized by having.

The present invention is a straining mold for molding a fibrous raw material into a predetermined three-dimensional shape, wherein a mesh material is formed so as to follow the outer shape of the three-dimensional shape, and a mesh-shaped three-dimensional shape portion and the mesh shape. A three-dimensional shape part and a flat part located around the three-dimensional shape part, and the mesh-like three-dimensional shape part has a shape consisting of a half of the three-dimensional shape.

The present invention relates to a molding die for molding a fibrous raw material into a predetermined three-dimensional shape, the three-dimensional shape portion having a shape substantially the same as the outer shape of the three-dimensional shape, and the periphery of the three-dimensional shape portion. A suction treatment for forming a hermetically sealed space that covers the flat surface portion from the flat surface portion side opposite to the convex surface side of the three-dimensional shape portion with respect to the molding die having a flat surface portion having a large number of through holes. A suction jig having a suction device nozzle through hole into which a nozzle of a suction device for sucking the closed space can be fitted and inserted.

The present invention is a straining mold for molding a fibrous raw material into a predetermined three-dimensional shape, wherein a mesh material is formed so as to follow the outer shape of the three-dimensional shape, and a mesh-shaped three-dimensional shape portion and the mesh shape. A suction jig for forming a closed space by covering the mesh-shaped three-dimensional shape portion from the convex side of the mesh-shaped three-dimensional shape portion with respect to the scraping die having a flat surface portion located around the three-dimensional shape portion. And a suction jig having a suction device nozzle through hole into which a nozzle of a suction device for sucking the closed space can be fitted and inserted.

The present invention is a concave press die having a concave portion having a predetermined three-dimensional shape and a flat surface portion located around the concave portion, and a convex portion having a predetermined three-dimensional shape, which fits into the concave portion. A press die having a convex press die having a convex portion.

Effect of the invention

INDUSTRIAL APPLICABILITY The present invention uses a straining die having a mesh material, a shaping die having a large number of through holes, and a suction jig in shaping the fibrous raw material-containing solution into a half part having a predetermined three-dimensional shape. Thereby, the water content of the fibrous raw material can be removed, the fibrous raw material can be transferred from the straining die to the molding die, and the shrinkage deformation of the fibrous raw material during drying can be suppressed. Therefore, since the papermaking formwork used in the prior art is not required and the manufacturing equipment having sufficient pressure resistance performance is not required, the manufacturing cost can be suppressed and the problem can be solved.

It is a perspective view of the prototype half part which has the three-dimensional shape by the side of the front of the manekineko concerning the present invention. FIG. 3 is a front view of a strainer according to the present invention. FIG. 3 is a plan view of a strainer type according to the present invention. FIG. 3 is a left side view of a strainer according to the present invention. It is a front view of the forming die concerning the present invention. It is a bottom view of the forming die concerning the present invention. It is a left side view of the forming die concerning the present invention. It is a front view of the additional filtering frame which concerns on this invention. It is a front view of the suction jig which concerns on this invention. It is a bottom view of the suction jig which concerns on this invention. It is a left side view of the suction jig concerning the present invention. FIG. 3 is a perspective view of a concave press die according to the present invention. It is a perspective view of the convex press type|mold which concerns on this invention. FIG. 3 is a cross-sectional view of a straining mold in which an additional straining frame is connected to the straining type and the additional straining frame. It is sectional drawing of a straining process. It is a cross-sectional view of the straining frame and the fibrous raw material after the straining step. It is sectional drawing of an auxiliary press process. It is sectional drawing of a water|moisture content removal process. It is sectional drawing of a transfer process. It is sectional drawing of the process of removing a straining die from a shaping|molding die. It is sectional drawing of the process of releasing a fibrous raw material from a shaping die. It is sectional drawing of a molding press process. It is a front view of a molded product according to the present invention. FIG. 3 is a perspective view of a molded product according to the present invention.

In the fibrous raw material molding method of the present invention, a three-dimensional papermaking process characterized in that a semi-solid having a predetermined three-dimensional shape is molded by filtering a fibrous raw material-containing solution using a mold having a predetermined three-dimensional shape. Examples will be described below.

1. Configuration The configuration of the squeezing die 5 according to the molded product on the front surface of the Lucky Cat type manufactured according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view of the prototype half body 1. FIG. 2 is a front view of the straining die 5. FIG. 3 is a plan view of the straining die 5. FIG. 4 is a left side view of the straining die 5. As shown in FIG. 1, the prototype half body 1 having a three-dimensional shape on the front side of the manekineko is output by a 3D printer. As shown in FIGS. 2 to 4, a mesh-shaped straining mold half body is formed by pressing a planar stainless steel mesh material against the convex portion of the prototype half body part 1 so as to follow the outer shape of the three-dimensional shape. A mesh material for a mold for shaving having a mesh-shaped flat portion 2 located around the portion 4 and the mesh-shaped slab half body 4 is formed. The strainer frame 3 is formed by cutting a plate material made of acrylic resin having a thickness of 5 mm into a frame shape using a laser cutter. The straining die 5 is constituted by adhering and fixing the straining mesh material so that it is positioned in the middle of the two straining frames 3.

A configuration of a mold 10 according to the manekineko-shaped molded product of Example 1 according to the present invention will be described with reference to FIGS. 5 to 7. FIG. 5 is a front view of the molding die 10. FIG. 6 is a bottom view of the molding die 10. FIG. 7 is a left side view of the molding die 10. As shown in FIGS. 5 to 7, the molding die half portion 9 is output by a 3D printer in a shape in which the surface layer of the prototype half body portion 1 is reduced by 2 mm. The flat body 8 is formed by cutting a plate material made of acrylic resin having a thickness of 5 mm with a laser cutter. The through holes 7 are provided in the flat body 8 with a diameter of 1.5 mm at intervals of up, down, left and right of 1.5 mm to form a plate member to be attached to the mold half part 9. The molding die 10 is configured by adhering and fixing the molding die half portion 9 and the planar body 8.

The configuration of the additional strainer frame 6 according to the manekineko type molded product of Example 1 according to the present invention will be described with reference to FIG. 8. FIG. 8 is a front view of the additional straining frame 6. Like the straining frame 3, the additional straining frame 6 uses a laser cutter to cut an acrylic resin plate material having a thickness of 5 mm into a frame shape.

The configuration of the suction jig 14 according to the manekineko type molded product of Example 1 according to the present invention will be described with reference to FIGS. 9 to 11. FIG. 9 is a front view of the suction jig 14. FIG. 10 is a bottom view of the suction jig 14. FIG. 11 is a left side view of the suction jig 14. The suction jig 14 is formed by cutting a plate material made of acrylic resin having a thickness of 5 mm using a laser cutter and combining the cut plate materials. A suction device nozzle through hole 15 is provided in the bottom surface portion, and an open frame member is provided in the fitting portion. It is configured by adhering and fixing the fitting portion fitted to both the convex and concave frames of the straining die 5, the side surface portion, and the bottom portion provided with the suction machine nozzle through hole 15 into which the suction machine nozzle 13 is fitted and inserted.

The structure of the press die according to the lucky-cat shaped product of Example 1 according to the present invention will be described with reference to FIGS. 12 to 13. FIG. 12 is a perspective view of the concave press die 17. FIG. 13 is a perspective view of the convex press die 18. The press die is composed of a concave press die 17 and a convex press die 18. The concave press mold 17 includes a concave press mold recess 17a, which is a recess obtained by inverting the convex part of the master half 1 (see FIG. 1), and a concave press mold flat portion 17b located around the concave press mold recess 17a. The shape having is output with a 3D printer. The convex press die 18 outputs a shape having a convex press die half body portion 18a obtained by reducing the surface layer of the convex portion of the prototype half body portion 2 by 2 mm and a prismatic handle 18b with a 3D printer.

2. Manufacturing Process of Molded Product A straining process corresponding to the manekineko-shaped molded product of Example 1 according to the present invention will be described with reference to FIGS. 14 to 16. In FIG. 14, two additional strainer frames 6 are connected to the strainer frame 3 on the concave surface side of the strainer die 5 so as to overlap each other. In FIG. 15, the fibrous raw material-containing solution 11 is applied to the concave side of the straining die 5 on the mesh-shaped strainer half 4 and the mesh-shaped flat portion 2 located around the mesh-shaped strainer half 4 to 5 mm. Strain until about to stay. In FIG. 16, the water of the fibrous raw material-containing solution 11 flows out from the straining die 5, and the fibrous raw material 12 remains on the mesh-shaped straining mold half portion 4 and the mesh-shaped flat portion 2. Then, the additional straining frame 6 is removed from the straining die 5.

The auxiliary pressing process according to the manekineko type molded product of Example 1 according to the present invention will be described with reference to FIG. 17. In FIG. 17, through the straining step, the convex side of the molding die 10 is fitted and inserted so as to be located above the fibrous raw material 12 that stays on the concave side of the straining die 5, and the fibrous raw material 12 is pressed.

The water removal step corresponding to the manekineko-shaped molded product of Example 1 according to the present invention will be described with reference to FIG. 18. In FIG. 18, in the state where the fibrous raw material 12 between the molding die 10 and the shaping die 5 is pressed through the auxiliary pressing step, the convex side of the shaping die 5 is positioned so that the convex side of the shaping die 5 is located on the lower surface. Is inserted into the fitting portion side of the suction jig 14. The suction machine nozzle 13 is fitted and inserted into the suction machine nozzle through hole 15 of the suction jig 14 to form a closed space that covers the convex side of the scraping die 5. A closed space for covering the convex side of the straining die 5 and the through holes 7 provided in the flat body 8 of the molding die 10 for the fibrous raw material 12, the mesh-shaped flat portion 2 and the mesh-shaped straining die half of the straining die 5. Water can be removed from the fibrous raw material 12 by sucking through the portion 4 from the suction nozzle 13 with an air flow equivalent to 3.0 m ³ /min for 15 seconds.

The transfer process corresponding to the manekineko-shaped molded product of Example 1 according to the present invention will be described with reference to FIGS. 19 to 20. In FIG. 19, the planar body side of the molding die 10 is placed so that the planar body side of the molding die 10 is located on the lower surface in a state where the fibrous raw material 12 between the molding die 10 and the straining die 5 is pressed through the water removing step. The suction jig 14 is fitted and inserted into the fitting portion side. The suction device nozzle 13 is fitted and inserted into the suction device nozzle through hole 15 of the suction jig 14 to form a closed space that covers the flat body side of the molding die 10. A closed space for covering the flat body side of the molding die 10 and the fibrous raw material 12 are formed in the mesh-shaped flat surface portion 2 and the mesh-shaped straining die half portion 4 of the molding die 5 and the flat body 8 of the molding die 10. Through 7, the suction nozzle 13 sucks air for 5 seconds or more with an air flow equivalent to 3.0 m ³ /min. In FIG. 20, the fibrous raw material 12 can be transferred to the molding die 10 by separating the fibrous raw material 12 from the straining die 5 and removing the straining die 5 while continuing the suction.

In FIG. 21, the fibrous raw material 12 is released from the molding die 10.

The molding/pressing step corresponding to the manekineko-shaped molded product of Example 1 according to the present invention will be described with reference to FIG. In FIG. 22, the convex surface of the fibrous raw material 12 removed from the molding die 10 is fitted and inserted into the concave press die recess portion 17 a of the concave press die 17. The convex press die half body portion 18 a of the convex press die 18 is fitted and inserted so as to be located on the upper surface of the concave surface of the fibrous raw material 12. The fibrous raw material 12 is pressed by hitting the convex pressing die handle portion 18b with a rubber mallet 3 to 4 times to form the molded product 19.

A manekineko-shaped molded product 19 of Example 1 according to the present invention will be described with reference to FIGS. 23 to 24. FIG. 23 is a plan view of the molded product 19. FIG. 24 is a perspective view of the molded product 19.

INDUSTRIAL APPLICABILITY According to the present invention, a half-body of a molded product can be mass-produced by a simple method for molding the fibrous raw material-containing solution into a half-body having a predetermined three-dimensional shape. By using a straining die having a mesh material, a molding die having a large number of through holes, and a suction jig, the moisture of the fibrous raw material is removed, and the fibrous raw material is transferred from the straining die to the molding die. It is possible to suppress shrinkage deformation during drying of the raw material. By using a 3D printer or a laser cutter, a papermaking formwork for mass production can be easily manufactured, and the cost of manufacturing equipment can be suppressed, and the problem can be solved.

The back of the Maneki Neko is molded in the same way as the molded product on the front of the Maneki Neko. The flat parts of the front molded product and the back molded product of the manekineko are cut out, and the front molded product and the back molded product are stuck together to form a manekineko.

INDUSTRIAL APPLICABILITY The present invention can be applied to various shaped objects as well as the manekineko type.

1 Prototype half part 2 Mesh-shaped flat part 3 Strainer frame 4 Mesh-shaped strainer half part 5 Strainer type 6 Additional strainer frame 7 Through hole 8 Plane body 9 Molding half part 10 Molding die 11 Containing fibrous raw material Solution 12 Fibrous raw material 13 Suction machine nozzle 14 Suction jig 15 Suction machine nozzle through hole 17 Recessed press die 17a Recessed press die recess 17b Recessed press die flat surface portion 18 Convex press die 18a Convex press die half body portion 18b Convex Mold press Mold handle 19 Molded product

Claims (8)

A fibrous raw material molding method for molding a fibrous raw material into a predetermined three-dimensional shape, comprising:
A fibrous raw material-containing solution containing the fibrous raw material is used to produce the fibrous raw material from the fibrous raw material-containing solution by using a strainer having a mesh-shaped three-dimensional shaped portion formed by molding a mesh material along the outer shape of the three-dimensional shape. A straining step of staying on the concave side of the mesh-like three-dimensional shape part,
A forming die having a three-dimensional shape part formed into substantially the same shape as the outer shape of the three-dimensional shape, wherein the fibrous raw material retained in the forming die has a large number of through holes. The three-dimensional shape portion of the mold from the concave side of the mesh-shaped three-dimensional shape portion of the mold so that it is located between the three-dimensional shape portion of the mold and the three-dimensional shape portion of the mold. A fitting and inserting, and an auxiliary pressing step of pressing the fibrous raw material by the straining mold and the molding mold,
From the flat surface side of the molding die, using a suction jig, to form a closed space that covers the flat surface side of the molding die, from the convex surface side of the straining mold toward the flat surface side of the molding die, the fibers A step of sucking the raw material and the closed space, releasing the fibrous raw material from the mold and transferring it to the molding die,
A fibrous raw material molding method. After the auxiliary pressing step, using the suction jig from the convex surface side of the shaping mold, to form a closed space that covers the convex surface side of the shaping mold, from the flat side of the molding die of the shaping mold Suctioning the fibrous raw material and the closed space toward the convex surface side, and having a moisture removal step of removing moisture from the fibrous raw material,
The fibrous raw material molding method according to claim 1. After the transfer step, the fibrous raw material is released from the molding die, and a convex press die having a convex surface portion formed along the outer shape of the three-dimensional shape; and the convex surface portion of the convex press die. Using a press die configured with a concave press die having a concave surface portion that fits on, on the concave surface portion of the concave press die, the fibrous raw material released from the molding die is inserted,
Fitting and inserting the convex surface portion of the convex press die on the fibrous raw material that has been fitted,
There is a molding and pressing step of pressing and molding the fibrous raw material,
The fibrous raw material molding method according to claim 1 or 2. A molding die for molding a fibrous raw material into a predetermined three-dimensional shape,
A three-dimensional shape part formed into a substantially same shape as the outer shape of the three-dimensional shape,
A flat portion located around the three-dimensional shape portion,
Have
The three-dimensional shape portion,
The surface layer of the outer shape of the three-dimensional shape is reduced, and the shape has a half body of the three-dimensional shape,
The flat portion is
Having a large number of through holes,
Molding die characterized by. A straining mold for molding a fibrous raw material into a predetermined three-dimensional shape,
A mesh-shaped three-dimensional shape part formed by molding a mesh material so as to follow the outer shape of the three-dimensional shape;
A plane portion located around the mesh-like three-dimensional shape portion,
Have
The mesh-like three-dimensional shape part,
Having a shape consisting of a half of the three-dimensional shape,
Strain type characterized by. A molding die for molding a fibrous raw material into a predetermined three-dimensional shape, the three-dimensional shape portion having a shape substantially the same as the outer shape of the three-dimensional shape, and a plurality of molds located around the three-dimensional shape portion. A suction jig for forming a hermetically sealed space by covering the flat surface portion from the flat surface portion side opposite to the convex surface side of the three-dimensional shape portion with respect to the molding die having a flat surface portion having a through hole. ,
A suction machine nozzle through hole into which a nozzle of a suction machine for sucking the closed space can be fitted and inserted,
Suction jig having. A straining mold for molding a fibrous raw material into a predetermined three-dimensional shape, and a mesh-shaped three-dimensional shaped portion formed by molding a mesh material along the outer shape of the three-dimensional shape, and the mesh-shaped three-dimensional shaped portion. A suction jig for forming a closed space by covering the mesh-shaped three-dimensional shape portion from the convex side of the mesh-shaped three-dimensional shape portion with respect to the mold having a flat surface portion located around the
A suction machine nozzle through hole into which a nozzle of a suction machine for sucking the closed space can be fitted and inserted,
Suction jig having. A concave press die having a concave portion having a predetermined three-dimensional shape, and a flat surface portion located around the concave portion;
A convex press die having a convex portion having a predetermined three-dimensional shape, the convex portion fitting into the concave portion;
Press mold with.