JP2004268591A - Manufacturing apparatus and method for three dimensional hollow mould shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve conventional problems in producing a die or a wooden mold for manufacturing products of three dimensional shape, especially those with a complicated three dimensional curved surface; that it takes much time and mold production cost due to a large number of fairing processes to achieve accuracy; that a special technique is required for designing and process data creating of the die or the wooden mold, which leads to an error by input mistake caused by frequent manual inputs; and that a variety of hard-wares (MC, NC milling-cutters, an electric discharge machine, etc.) used in the mid-course for making a mold are required, which have bad influences on energy, environmental conservation and the like. <P>SOLUTION: A material sheet is cut following a crosscut shape, by converting the three dimensional shape data supplied from an image apparatus or a three dimensional CAD into two dimensional shape data by data processing. After removing the crosscut shape, a hollow material sheet is cut into a fixed size and stacked to manufacture the three dimensional shape for use as a die. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a hollow three-dimensional shape forming apparatus and method for forming a mold from image or shape data.

    Conventionally, when manufacturing an object having a three-dimensional shape, a method of designing a wooden mold and a mold based on a drawing of the object, and manufacturing the three-dimensional shape by manufacturing the cutting data based on the processing data is widely used. However, it takes a considerable number of days and various equipment to finish, which is a factor that increases the production cost.

    It is conceivable to create a three-dimensional real shape model by using a recent molding technology and to convert it to a mold or the like. As a molding technology to create a three-dimensional real shape model, a photo-curing molding method using a material that cures when illuminated, a lamination method of a molten material that melts fiber resin and laminates while extruding from a nozzle, a paper sheet, 2. Description of the Related Art A paper laminating method in which a paper sheet is laminated after being cut into a model sectional shape is known.

In Japanese Patent Application Laid-Open No. 2003-285333, a three-dimensional shape supplied from an imaging device or a three-dimensional CAD is converted into two-dimensional shape information, an actual shape is peeled off from a material sheet by vacuum, and the remaining part of the mold sheet is integrated to form a metal sheet. An apparatus and method for creating a mold shape is presented.
JP 2003-285333 A

    It takes a lot of time and cost to manufacture molds such as molds and wooden molds for producing solid three-dimensional shapes, and fairing processing for achieving accuracy is required for objects with complicated three-dimensional curved surfaces. It's becoming more and more expensive and time consuming. In addition, special techniques are required for designing molds and wooden molds and creating processing data, and there are many manual input parts, and erroneous operations due to input errors have occurred. Furthermore, various kinds of various equipments (MC, NC milling machine, electric discharge machine, etc.) used in the middle for making a mold are required, which has an adverse effect on energy and environmental security.

  In the recent modeling technology, for example, in the technology of forming a three-dimensional object by laminating paper sheets, the operation of cutting the paper sheet according to the three-dimensional cross-sectional shape is repeated and laminated, and the adhesive applied to the paper sheet is removed. A three-dimensional body shape is created by heat curing, and unnecessary unnecessary sheet portions outside the cut contour are manually removed to form a three-dimensional real shape model.

Such a shaping technique is basically an apparatus for producing one input three-dimensional shape supplied by a three-dimensional CAD or the like. Further, when the current paper sheet is cut and laminated on the lamination table, there is a problem that the current paper sheet is transferred so as not to be displaced on the lamination sheet of the paper laminated up to the previous time on the lamination table. For this purpose, first place the current paper sheet on the laminated sheet of paper up to the previous time with rough accuracy and bond the paper sheets together, then cut the cross-sectional shape with the same coordinate value origin up to the previous time The accuracy of lamination of paper sheets is maintained. In other words, the gap is eliminated by stacking the current sheet and aligning the coordinate origin and cutting the sheet, but the process becomes complicated and it takes time. In Japanese Patent Application Laid-Open No. 2003-285333, a three-dimensional shape supplied from a video device or a three-dimensional CAD is converted into two-dimensional shape information, a real shape is cut into a material sheet, and the real shape portion is peeled off by vacuum. Although an apparatus and a method for creating a mold shape by accumulating the mold sheets of the remaining portion have been proposed, there still remains a problem regarding deviation when the remaining portion is cut out and accumulated on the loading table.

  In addition, when the paper sheets are laminated and fixed by the conventional method, the adhesive applied to the lower surface of the paper sheet is hardened by overheating or pressure every time the sheets are laminated. For this reason, it takes time to bond the sheets together, and furthermore, it takes more time since the bonding is repeated every time the mold sheets are laminated.

  Further, since the transfer of the paper sheets, the bonding of the paper sheets, and the cutting of the bonded paper sheet are performed in the same process, this process is a neck process.

  When metal is used for the material sheet due to the problem of mechanical strength, the thermal output of laser cutting is large, and it is necessary to correct thermal deformation and burrs due to laser cutting and the like. Further, in the conventional laminating method, when the uppermost sheet is cut, there is also a problem that the sheet below the sheet is also affected by heat, so that a structural problem of the apparatus is great. For this reason, after cutting, deburring and lamination are performed by another device or tool, and a three-dimensional shape cannot be produced by one device.

  When separating the three-dimensional shape formed by lamination, the unnecessary part is separated by means of cutting the unnecessary part in the conventional paper sheet laminating method, but the unnecessary part outside the cut outline is manually cut. It is removed and it takes human labor.

  In the lamination method of the mold sheet, there is a problem of the step of the sheet, and it is necessary to improve the quality of the surface of the formed three-dimensional shape, and the post-processing is troublesome.

  In the case of using a completed molded product by laminating mold sheets as a molding die or the like for producing a product, it is affected by heat during molding. Molded products are made by laminating sheets and have problems such as water leakage, so it is difficult to provide cooling piping, and measures such as slowing down the molding cycle time to prevent heat rise are taken. Is bad.

  Therefore, in the present invention, a three-dimensional hollow shape can be formed in a short time with high accuracy without any deviation when cutting and laminating a sheet, and even when a metal material sheet is used. An object of the present invention is to provide an apparatus and a method for forming a mold. FIG. 9 is a schematic view showing an example of a mold having a hollow three-dimensional shape created by laminating such sheets.

  The hollow three-dimensional shape forming apparatus and the manufacturing method according to the present invention are methods for forming a three-dimensional shape by laminating mold sheets having a hollow cross-sectional shape, and according to the cross-sectional shape according to claim 1. When laminating cut mold sheets, a material sheet is fixed and a fixed size mold sheet is cut out from the original plate with a die-cut block etc. in order to prevent misalignment at the time of lamination, and a cassette that matches the size Insert and laminate. A cassette or the like is a means for fixing the cut mold sheet so that the sheet does not shift in the horizontal direction. With this method, the paper sheet of this time is placed on the laminated sheet of paper up to the previous time with rough accuracy and the paper sheets are bonded together, and then the cross-sectional shape is cut in the same way as the coordinate value origin up to the previous time This makes it possible to produce a hollow three-dimensional shape in an extremely short time as compared with a complicated method for maintaining the accuracy of lamination of paper sheets.

  According to a second aspect of the present invention, when a material sheet is inserted into a hollow cassette of a predetermined size, a mold sheet cut off from the material sheet by a die-cut block or the like may fall and cause a positional shift. . In this method, since the material sheet is sucked and held by vacuum or the like installed on the upper surface of the material sheet and hollowed out, the material sheet does not fall, and positional displacement due to the fall can be prevented, and the mold sheet can be laminated with high accuracy.

  According to the third aspect, when the mold sheets of the laminated sheet are fixed to each other, as shown in FIG. 6, an adhesive or the like can be applied to the mold sheet from an open portion such as a cassette. The mold sheets stacked on the cassette do not move because they are fixed by the frame of the cassette. Therefore, after the stacking of the mold sheets is completed, the cassette is taken out, and an adhesive is collectively applied from the opened portion to fix the stacked mold sheets together. Conventionally, paper sheets are bonded and laminated to each other during the production of a three-dimensional shape. In that case, the adhesive applied to the lower surface of the paper sheet at the time of laminating each sheet needs to be adhered and cured between the sheets by heating or pressurizing, and it takes time for each fixing process.

  According to the fourth aspect, the key processes (adhesive application, cross-sectional shape cutting, sheet hollowing / lamination, etc.) are divided into mechanisms, so that they are simultaneously processed in parallel to reduce processing time. In particular, laser processing is facilitated by making the process of cutting with a laser cutter or the like, peeling off with air, etc., and the process of hollowing out a material sheet to a fixed size with a die-cutting block, etc., to facilitate laser processing and shorten the overall processing time. Can be done. The conventional laminating method employs a method of laminating and joining (thermocompression bonding) one by one and then cutting only one of the uppermost layers. A laser or knife is used to cut only the top sheet, but in general, when the material sheet is a metal plate, cutting the top part while laminating and joining the sheets cuts to the lower sheet It is possible and it is very difficult to cut only the top. Therefore, it is effective to separate the cutting and laminating steps. When an apparatus for applying an adhesive or the like is installed, the processing time is further shortened as compared with the conventional method by adopting a mechanism for simultaneously performing this step.

  According to a fifth aspect of the present invention, there is provided a mechanism for correcting thermal deformation, plate thickness variation, and the like of a material sheet after processing such as laser cutting, and removing adhering substances, burrs, and the like to obtain a predetermined plate thickness and planar shape. The material sheet after processing is changed, and even if the error of one sheet is slight, it becomes a large error if the sheets are stacked. In order to solve these problems, the sheet is pressed against a material sheet by a pressing roller or the like so as to have a predetermined thickness, and is corrected to a predetermined thickness and shape. It is to be noted that the pressing roller or the like may be modified in shape by rotation of a brush, a file or the like. Further, the predetermined thickness can be adjusted by the gap of the pressing roller or the like, so that the error after lamination can be further reduced.

  The sixth aspect of the present invention relates to an entire apparatus configuration from a data processing unit that converts a three-dimensional shape supplied from a video device or a three-dimensional CAD into two-dimensional shape information and supplies the information to a three-dimensional shape. This is a method in which roll feeding is used to produce a laminated sheet. It is composed of data processing means, adhesive applying means, cutting means, stripping means, hollowing means, and laminating means, and it has become possible to produce a three-dimensional shape by one unit. Laser processing is facilitated by making the process of cutting with a laser cutter or the like, peeling off with air, etc., and the process of hollowing out a material sheet to a certain size with a die-cutting block, etc. There is no influence. The thermal deformation and burrs of the material sheet due to laser cutting can be corrected to a predetermined thickness by providing a pressure roller or the like according to the fifth aspect. In a case where the cassette or the like is pushed in so as not to shift during stacking of the mold sheet, the cassette or the like has a structure in which the cassette moves up and down or expands and contracts according to the stacking amount of the mold sheet. The lamination height changes according to the number of laminations of the mold sheet. The cassette and the like can be made to expand and contract or expand and contract in accordance with the stacking amount of the mold sheets, so that the amount of pushing the extracted sheets into the cassette can be constant, so that the pressing pressure can be the same. A cassette or the like is a means for fixing the cut mold sheet so that the cut mold sheet does not shift in the horizontal direction, and a three-dimensional mold shape can be produced by the mold sheets stacked on the cassette or the like. According to a seventh aspect, the hollow three-dimensional shape forming apparatus according to the sixth aspect has versatility. Various means such as a roller, a vacuum, and a belt can be considered as a means for conveying the material sheet.

  In the ninth aspect of the present invention, the adhesive is applied to the material sheet before the material sheet is extracted to a predetermined size by a die-cutting block or the like. In the tenth aspect, an adhesive or the like is applied to the mold sheet when the extracted mold sheet is laminated on a cassette or the like.

  In the eleventh aspect, a plurality of cutting lines for facilitating disassembly into a material sheet at the time of cutting the cross-sectional shape are provided, or the material sheet is laminated by means for preventing application of an adhesive to a part of the material sheet. It becomes easy to separate the mold sheets. As shown in FIG. 7, cutting lines are provided on the left and right of the sectional shape, and the cutting is performed at the same time as the sectional shape is cut by a laser or the like. The hollow three-dimensional mold completed after lamination is separated according to the cutting line, so that a female and male three-dimensional mold can be simultaneously produced. The female and male three-dimensional shapes can be used as a pair of dies.

  In the twelfth and thirteenth aspects, there is provided a hollow three-dimensional mold forming method for improving the surface roughness of a mold formed by laminating mold sheets. As the material sheet, a thin plate of 50 to 100 μ is used, but a slight step is generated in the laminated sheet. The adhesive is applied to the lamination of the mold sheets so as to interpolate the gap between the steps, and the surface is finished to be smooth. The surface finish of the three-dimensionally shaped object is performed by spraying the adhesive paint or the like on the surface of the shaped object so as to flow in parallel or the like, and allowing the adhesive to settle in an air pocket or the like due to the step of the laminated sheet. In addition, a metal mold is charged positively or negatively, and a paint spray or the like of the opposite charge flows on the mold surface to finish the surface of the three-dimensional mold.

  As described in claim 14, in the case of using a molded article formed by laminating mold sheets for molding or the like, the molded article is fitted into an outer frame structure provided with cooling water holes, and the mold shape at the time of molding is used. Try to mitigate the heat rise of objects. Further, as shown in FIG. 8, the cooling capacity of the cooling water holes in the outer frame structure can be arbitrarily increased. As a result, it is possible to provide a molding die that protects the molded product from the thermal influence of the adhesive and the sheet material, increases the molding cycle time, increases the durability, and increases the productivity.

  According to the first and second aspects, it is possible to eliminate the misalignment when cutting a fixed size mold sheet from the material sheet, and to accurately and quickly stack the mold sheets. As a result, for example, like a conventional paper sheet lamination, the current paper sheet is placed on the previous paper lamination sheet with rough accuracy and the paper sheets are bonded together, and then the coordinate values up to the previous time The hollow three-dimensional shape can be manufactured in a very short time as compared with a complicated method in which the cross-sectional shape is cut in the same manner as the origin and the accuracy of lamination of the paper sheets is maintained.

  According to the third aspect, the cassette can be taken out after the lamination of the mold sheets is completed, and the adhesive can be applied at once from the opened portion and fixed. Sheet lamination can be completed quickly without the necessity of bonding / fixing every time the mold sheets are laminated.

  According to the fourth aspect, the key process is divided into mechanisms and processed in parallel to reduce the processing time, so that the entire manufacturing time is reduced. Conventionally, this step has been a neck step in order to transfer the paper sheets, bond the paper sheets together, and cut the paper sheet after the bonding in the same step.

According to the fifth aspect, even if the thickness of the sheet is varied due to laser cutting or the like, deformation of the material sheet, burrs and attached matter at the time of cutting are removed by a pressing roller or the like, and the variation of the sheet thickness is corrected to a predetermined value. It can be at the stack height. Further, the laser processing is facilitated by making the step of cutting by a laser cutting machine or the like according to claim 4, the step of peeling off by air or the like, and the step of cutting out a material sheet into a fixed size by a die-cutting block or the like into separate steps, thereby facilitating laser processing. There is no thermal effect on existing mold sheets. For this purpose, the entire apparatus configuration as described in claims 6 and 7 is used, and in the equipment among them, a mechanism such as a cassette expansion / contraction mechanism according to claim 8 and a mechanism such as an adhesive coating apparatus according to claims 9 and 10 are used. In this way, a three-dimensional shape can be manufactured by one device. Conventionally, various and various equipments (MC, NC milling machine, electric discharge machine, etc.) which have been used in the middle for mold making are unnecessary, and energy saving and ripple effects on environmental problems can be expected.

  According to the eleventh aspect, it is possible to simultaneously form the female and male three-dimensional shapes by means of providing a plurality of cutting lines on the material sheet or preventing the adhesive from being applied to a part of the material sheet. . Conventionally, when a female or male three-dimensional shape is manufactured, each of them is separately manufactured, which requires twice as much manufacturing time.

  The lamination method of the mold sheet has a problem of a step of the sheet, and requires post-processing for improving the quality of the surface of the formed three-dimensional mold. According to claims 12 and 13, the lamination of the mold sheet is performed. Then, the adhesive is applied so as to interpolate the gap between the steps, and the surface is finished to be smooth. When using a three-dimensional mold shape as a molding die, high quality molding can be performed.

  According to the fourteenth aspect, the three-dimensional mold is fitted into the outer frame structure provided with the cooling water holes, so that the heat rise of the mold during molding is reduced. The shape of the cooling water hole is free and the cooling volume can be increased. It is possible to provide a molding die having high molding cycle time and durability and high productivity.

  The apparatus and method for producing a three-dimensional shape by laminating sheets according to the present invention comprise data processing means, adhesive applying means, cutting means, peeling means, hollowing means, and laminating means, and produce a large number of products of the same shape. This is an apparatus and a method for stacking sheets to produce a three-dimensional shape.

  As the material used for the material sheet of the present invention, metal, resin, paper, cloth, ceramic, and the like can be used.

  As a means for cutting into a cross-sectional shape, a laser beam, air, a water stream, a heat ray, a metal or ceramic cutter or the like can be considered.

  As the adhesive or the like applied to the material sheet, use of various adhesives and resins such as thermosetting, thermoplastic, pressure-adhesive, photocurable, and chemical reactivity can be considered.

Hereinafter, embodiments will be described in detail with reference to the drawings.
FIG. 1 is a side view of a hollow three-dimensional shape forming apparatus according to claim 6. It is composed of data processing means, cutting means, adhesive application means, stripping means, hollowing means, and laminating means, and a three-dimensional shape is produced by one unit. As described in claim 4, key processes such as cutting, peeling, hollowing and laminating are divided into mechanisms to speed up the overall manufacturing time. The material sheet 2 is conveyed from the roll feeder 1 to the winding device 3 by the feed roller 4. An adhesive is applied to the fed material sheet 2 by the adhesive applying device 5 according to the ninth aspect. According to the cross-sectional shape based on the two-dimensional information supplied from the data processing means, it is cut by the cutter unit 6, and the cut cross-sectional shape portion is peeled off by the vacuum roller 7. At this time, the material sheet is pressed by the pressing roller 8 according to claim 5, and the material sheet is corrected to have a predetermined sheet thickness and planar shape by correcting thermal deformation, sheet thickness variation, and the like. The hollow material sheet 2 whose cross-sectional shape is stripped off is cut out to a fixed size by the die cutting block 9 as described in claim 1, and the die sheet thus drawn is placed in the cassette 12 so that the die sheet does not shift during lamination. Push in. At the time of removal, the vacuum head 10 descends along the die-cutting block guide 11 together with the die-cutting block 9 as described in claim 2, and the vacuum head 10 holds the material sheet while holding the material sheet. The material sheet 2 is hollowed out to prevent displacement due to falling of the mold sheet. The extracted material sheet 2 is taken up by a take-up device 3. Further, as described in claim 8, the cassette 12 is lowered by the newly stacked mold sheets, and the amount of pushing the mold sheets into the cassette next time is constant. The laminated sheet 13 laminated on the cassette 12 is fixed and hardened to form a three-dimensional mold.

  FIG. 2 is an explanatory diagram showing the relationship between the cutting machine unit 6 and the feed roller 4 of the hollow three-dimensional shape forming apparatus according to claim 6. The laser head of the cutting machine unit 6 is installed above the material sheet 2 conveyed from the feed roller 4 to the winding device 3. The feed rollers 4 are provided on both sides of the transfer device 14 to ensure the transfer of the material sheet 2.

"Effects of the embodiment"
According to this embodiment, a key process such as a process of cutting with a laser cutting machine or the like and peeling it off using air or the like, a process of hollowing out a material sheet to a certain size with a die cutting block or the like, and laminating the material sheet on a cassette or the like By dividing the mechanism into a mechanism capable of simultaneous and parallel processing, the cutting process can be facilitated and the manufacturing time can be shortened. In addition, there is no deviation when laminating a mold sheet cut out of a material sheet into a cassette, and a three-dimensional mold can be produced extremely accurately and in a short time.

  Various types of equipment (MC, NC milling machine, electric discharge machine, etc.), which were used in the middle for making molds, are no longer necessary, and energy saving and ripple effects on environmental issues can be expected. Can be provided. In addition, easy operation can be performed on a device panel such as an office machine, and safety for workers can be ensured as compared with conventional machining.

"Other embodiments"
FIG. 3 is a side view of the hollow three-dimensional shape forming apparatus according to the seventh aspect. The material sheet 2 stacked on the original sheet supply table 15 is sent to the conveying device 14 by the original sheet sending unit 16, and the adhesive is applied to the conveyed material sheet 2 by the adhesive applying device 5. After applying the adhesive, the sheet is cut by the cutter unit 6 in accordance with the cross-sectional shape based on the two-dimensional information supplied from the data processing means, and the cut cross-sectional shape portion is peeled off from the material sheet 2 by the vacuum roller 7. At this time, the material sheet is pressed by the pressing roller 8, and the material sheet is corrected to have a predetermined thickness and a planar shape by correcting thermal deformation, variations in the thickness, and the like. The hollow material sheet 2 whose cross section has been peeled off is drawn out to a predetermined size by the die-cutting block 9, and the die sheet is pushed into the cassette 12 so as not to be displaced when the die sheets are stacked. At this time, the die-cutting block 9 and the vacuum head 10 descend along the die-cutting block guide 11, and the material sheet 2 is cut out by the die-cutting block 9 while holding the material sheet by the vacuum head 10. The laminated sheet 13 laminated on the cassette 12 is fixed and cured to form a mold shape.

  FIG. 4 is an explanatory view of the transfer of the original plate of the three-dimensional shape forming apparatus according to claim 7 of the present invention. The material sheet 2 is conveyed from the original sheet supply table 15 to the cassette 12 in the direction of the arrow. The hollow material sheet 2 from which the cross-sectional shape is stripped from the material sheet 2 is cut out to a fixed size by the die-cutting block 9. A holding guide 17 is mounted at a position where the guide is removed. The pressing guide 17 presses down and fixes the material sheet 2, and facilitates the removal of a fixed size by the die-cutting block 9.

  FIG. 5 is an explanatory view showing the relationship between the cutting unit 6 and the feed roller 4 of the three-dimensional shape forming apparatus according to the seventh aspect. A laser head of the cutting unit 6 is installed above the sheet conveying device 14. The feed rollers 4 are provided on both sides of the transfer device 14 to ensure the transfer of the material sheet 2.

    FIG. 6 is an explanatory view of the cassette according to the third aspect. There is a portion where the laminated sheet 20 formed by laminating the mold sheets is released from the cassette outer frame 18, and an adhesive can be applied from the outside. Also, an adhesive can be applied from the upper sheet 19 of the laminated sheet to the inner part.

    FIG. 7 is an explanatory diagram of a cutting line according to claim 11. A cutting line 21 is provided at the time of cutting the cross-sectional shape 22, and the cutting is performed at the same time.

    FIG. 8 is an explanatory view of the outer frame structure 25 according to claim 14. The mold 24 is fitted into the outer frame structure 25 provided with the cooling water holes 23, and the mold 24 is protected from heat influence during molding.

    FIG. 9 is a schematic diagram of a mold created by laminating mold sheets 26.

It is a side view of the three-dimensional type | mold shape manufacturing apparatus of Claim 6. It is explanatory drawing of the three-dimensional type | mold shape production apparatus of Claim 6. It is a side view of the three-dimensional type | mold shape manufacturing apparatus of Claim 7. It is explanatory drawing of original plate conveyance of the three-dimensional-shaped shape production apparatus of Claim 7. It is explanatory drawing of the three-dimensional type | mold shape manufacturing apparatus of Claim 7. It is explanatory drawing of the cassette of Claim 3. It is explanatory drawing of the cutting line of Claim 11. It is explanatory drawing of the outer frame structure of Claim 14. It is the schematic of the type | mold created by lamination | stacking of the sheet | seat in explanatory drawing of a hollow three-dimensional type | mold shape.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 roll feeder 2 material sheet 3 take-up device 4 feed roller 5 adhesive coating device 6 cutting machine unit 7 vacuum roller 8 press-contact roller 9 die-cut block 10 vacuum head 11 die-cut block guide 12 cassette 13 laminated sheet 14 transport Apparatus 15 Original sheet supply table 16 Original sheet sending unit 17 Pressing guide 18 Casing outer frame 19 Upper sheet of laminated sheet 20 Laminated sheet 21 Cutting line 22 Cross-sectional shape 23 Cooling water hole 24 Molded object 25 Outer frame structure 26 Molded sheet

Claims (14)

A three-dimensional actual cross-sectional shape obtained by slicing the actual three-dimensional shape of the product to be manufactured by the mold is cut out from the material sheet, and the remaining portion cut out is used as a mold sheet, and the mold sheet is laminated to produce a hollow three-dimensional mold. In the equipment, in order to prevent deviation when laminating the mold sheets, fix the material sheet and cut out a mold sheet of a certain size from the material sheet with a die-cutting block etc. and insert it into a cassette according to the size A hollow three-dimensional shape forming apparatus characterized by lamination. When fixing a material sheet and excavating a mold sheet of a certain size with a die-cutting block, etc., cut it out while holding it with a vacuum etc. installed on the upper surface of the material sheet. The hollow three-dimensional shape forming apparatus according to claim 1, which prevents a dropped mold sheet from falling and causing a positional shift or the like. When stacking the extracted mold sheets on a cassette, etc., the cassette etc. are partially open so that adhesive etc. can be applied from the outside, and make sure that the laminated mold sheets can be fixed from the outside with an adhesive etc. The hollow three-dimensional shape forming apparatus according to claim 1. The key process, such as cutting with a laser cutting machine and peeling off using air or the like, and extruding a die sheet into a certain size with a die cutting block etc., and laminating it on a cassette etc. A hollow three-dimensional shape forming apparatus characterized in that the whole manufacturing time is shortened by making the mechanism capable of performing simultaneous and parallel processing. After peeling off the cross-sectional shape portion from the material sheet using air etc., press the pressing roller etc. against the material sheet, remove the deformation of the material sheet, burrs at the time of cutting, adhering matter, etc. and remove the thickness variation etc. An apparatus for producing a three-dimensional hollow shape, which is modified to have a predetermined plate thickness and a planar shape. A roll-shaped material sheet is attached to the sending device to create a three-dimensional cross-sectional shape obtained by converting a three-dimensional shape supplied from an imaging device or a three-dimensional CAD into two-dimensional shape information by data processing. Is wound around a winding device. Means for cutting with a laser cutter or the like in accordance with the cross-sectional shape based on the two-dimensional information supplied from the data processing means, means for peeling off the cut cross-sectional shape portion from the material sheet using air, etc., and stripping the cross-sectional shape Means for hollowing out the obtained hollow material sheet to a fixed size with a die-cutting block or the like, stacking the extracted die sheet on a cassette or the like so as not to be displaced when laminating, and winding the extracted material sheet into a winding device Means for forming a three-dimensional shape by laminating mold sheets inserted in a cassette or the like. Means for sending a material sheet from the sending device and cutting it with a laser cutter or the like in accordance with the cross-sectional shape based on the two-dimensional information, means for peeling off the cut cross-sectional shape portion from the material sheet using air or the like, and the cross-sectional shape is peeled off Hollow 3 characterized in that a hollow material sheet taken out is hollowed out to a certain size with a die-cutting block or the like, and the die sheet thus taken out is laminated on a cassette or the like so as not to be displaced during lamination, thereby producing a three-dimensional shape. Dimensional shape production equipment. When a material sheet is hollowed out to a fixed size and the extracted mold sheet is pushed into a cassette etc. so that it does not shift during stacking, the cassette etc. 8. The hollow three-dimensional shape forming apparatus according to claim 6, wherein an amount of the hollow three-dimensional shape is fixed. Before extracting the material sheet to a certain size with a die-cutting block or the like, a device for applying an adhesive or the like to the material sheet is installed so that the extracted die sheet retains strength during lamination. The hollow three-dimensional shape forming apparatus according to claim 6, wherein an adhesive or the like is applied to the surface. A device is installed to extract a material sheet to a certain size with a die-cutting block, etc., and to apply an adhesive or the like to the extracted die sheet when stacking the extracted die sheet in a cassette or the like. The hollow three-dimensional shape forming apparatus according to claim 6, wherein the coating is performed. A hollow three-dimensional mold characterized by facilitating separation of a completed mold shape after lamination by means such as providing a cutting line on a material sheet or preventing an adhesive from being applied to a part of the material sheet. Shape preparation method. In order to improve the surface roughness of the finished molded product by laminating the molded sheets, spray the adhesive paint etc. on the surface of the three-dimensional molded product, and apply the adhesive paint in the air pocket etc. due to the step of the laminated sheet. A method for producing a hollow three-dimensional shape, wherein a step of the shape is reduced by performing sedimentation, and the surface is finished. In order to improve the surface roughness of the molded product made by laminating the mold sheets, the metallic shape is used as the material sheet to charge the molded product positively or negatively, and paint spray with the opposite charge Forming a flow on the surface of the mold to finish the surface of the mold. In the case where a molded product obtained by laminating mold sheets is used for molding or the like, the molded product is fitted into an outer frame structure provided with a cooling water hole, and heat rise of the molded product during molding is reduced. A method for producing a hollow three-dimensional shape, wherein a cooling water hole is increased in a cooling volume by a cavity of an arbitrary size in an outer frame structure.

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