JP2018024141A - Manufacturing method of decorative article and manufacturing device of decorative article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a decorative article capable of easily providing a decorative article having a projection on a decorative surface, and a manufacturing device of the decorative article used therefor.SOLUTION: A manufacturing method of the decorative article is constituted by forming a hole in a decorative sheet before supplying the same between molds, arranging the decorative sheet on a movable molding surface, pressing the decorative sheet to a movable molding surface side while closing the hole of the decorative sheet, adhering the decorative sheet to the movable molding surface, closing the mold, molding the decorative article having the projection and taking off the decorative article from the mold. The manufacturing device of the decorative article is constituted to have a pair of molds, a cut mechanism consisting of a cutting part and a receiving part and forming the hole in the decorative sheet, and an air leakage prevention mechanism for pressing the decorative sheet to the movable molding surface side while closing the hole.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for manufacturing a decorative product and a device for manufacturing the decorative product.

  As a method for producing a decorative product whose surface is decorated with a decorative sheet, there is a simultaneous molding decorative method. This is a method in which a decorative sheet is sandwiched between a pair of molds, a molten resin is injected into a cavity and molded, and at the same time the surface of the molded product is decorated with a decorative sheet (see, for example, Patent Document 1). ). In Patent Document 1, it is possible to obtain a decorative product in which convex portions such as bosses and ribs are formed on the back side of a molded product.

Japanese Patent Laid-Open No. 11-077742

  However, in the conventional simultaneous molding decoration method, when it is desired to obtain a decorative product in which convex portions such as bosses and ribs are formed on the decorative surface, the decorative sheet is torn at the time of molding. Therefore, a convex part can only be formed in the surface opposite to a decorating surface, and there exists a problem that the variation of a decorative product does not spread. It is possible to prepare a decorative sheet in which a hole is formed in advance with a roll and use it for molding, but in this case, a winding mark is formed by a step between a part where a hole is formed and a part where the hole is not formed. When this is used and molding is performed, the appearance of the decorative product is deteriorated.

  The present invention has been made to solve the above problems, and a method for manufacturing a decorative product that can easily obtain a decorative product having a convex portion on the decorative surface, and a device for manufacturing the decorative product used therefor The purpose is to provide.

  Hereinafter, a plurality of modes will be described as means for solving the problems. These embodiments can be arbitrarily combined as necessary.

The method for producing a decorative product of the present invention is as follows:
A pair of molds including a movable mold having a molding surface including a concave portion that forms a convex portion on a decorative surface and a fixed mold having a molding surface that forms a surface opposite to the decorative surface is prepared. Forming a hole of the same shape as the outer edge shape of the recess in the decorative sheet before supplying in between,
The step of arranging the decorative sheet on the movable molding surface so that the outer edge of the hole of the decorative sheet and the outer edge of the recess coincide with each other;
A step of pressing the decorative sheet against the movable molding surface while closing the hole of the decorative sheet;
A step of sucking the air in the cavity formed between the movable molding surface and the decorative sheet and bringing the decorative sheet into close contact with the movable molding surface;
A process of clamping the movable mold and the fixed mold;
A step of molding a decorative product having a convex portion integrated with a decorative sheet by injecting molten resin into the cavity;
Opening the movable mold and the stationary mold;
And a step of taking out the decorative product from the mold.

  Preferably, the step of forming the hole in the decorative sheet includes a blade part installed on one upper surface of the mold and a receiving part installed on the other upper surface of the mold when the mold is clamped. The decorative sheet to be supplied next between the molds is sandwiched between and a hole having the same shape as the outer edge shape of the recess is formed in the decorative sheet.

  Preferably, the step of forming the hole in the decorative sheet includes a blade portion and a blade installed upstream of the movable type in the flow direction of the decorative sheet before the step of taking out the decorative product from the mold. The decorative sheet supplied between the molds is sandwiched between the receiving part and the receiving part, and a hole having the same shape as the outer edge shape of the recess is formed in the decorative sheet.

  More preferably, the step of forming a hole in the decorative sheet includes forming a hole by a blade portion from the decorative layer side of the decorative sheet.

  More preferably, the step of forming a hole in the decorative sheet includes rotating the blade portion in the circumferential direction of the hole to form a hole in the decorative sheet, or punching the decorative sheet at the blade portion to decorate It includes forming holes in the sheet.

  More preferably, the step of forming the hole includes removing the cut piece of the decorative sheet cut by the blade portion from the receiving hole provided in the receiving portion.

  More preferably, the method further includes a step of spraying ions from the base sheet side of the decorating sheet onto the base sheet to remove static electricity from the base sheet.

  More preferably, the method further includes a step of sucking chips when forming a hole in the decorative sheet from the base sheet side of the decorative sheet.

The apparatus for producing a decorative product of the present invention is:
A pair of molds composed of a movable mold having a molding surface including a concave portion forming a convex portion on the decorative surface, and a fixed mold having a molding surface forming a surface opposite to the decorative surface;
A cutting mechanism comprising a blade portion and a receiving portion for receiving the blade portion, and forming a hole having the same shape as the outer edge shape of the recess in the decorative sheet;
Air leakage prevention that presses the decorative sheet toward the movable molding surface while closing the hole of the decorative sheet arranged on the movable molding surface so that the outer edge of the hole of the decorative sheet and the outer edge of the recess coincide. And a mechanism.

  Preferably, in the cutting mechanism, the blade portion is installed on one upper surface of the mold, and the receiving portion is installed on the other upper surface of the mold.

  Preferably, in the cutting mechanism, the blade part and the receiving part are on the movable mold side, and are installed on the upstream side in the flow direction of the decorative sheet from the movable mold.

  More preferably, the cutting mechanism has a blade portion on the fixed mold side and a receiving portion on the movable mold side with the decorative sheet interposed therebetween.

  More preferably, it further includes a cut piece removing mechanism for removing a cut piece of the decorative sheet cut by the blade portion through a receiving hole provided in the receiving portion.

  More preferably, it further includes a static elimination mechanism that is installed on the base sheet side of the decorative sheet and sprays ions that remove static electricity on the base sheet.

  More preferably, the apparatus further includes a dust collection mechanism that is installed on the base sheet side of the decorative sheet and sucks chips when a hole is formed in the decorative sheet.

  The method for producing a decorative product of the present invention includes a pair of a movable mold having a molding surface including a concave portion that forms a convex portion on the decorative surface and a fixed die having a molding surface that forms a surface opposite to the decorative surface. And forming a hole having the same shape as the outer edge shape of the recess in the decorative sheet before supplying between the molds, and the outer edge of the hole in the decorative sheet on the molding surface of the movable mold The step of arranging the decorative sheet so that the outer edge of the recess coincides, the step of pressing the decorative sheet against the movable molding surface side while closing the hole of the decorative sheet, the movable molding surface and the decoration A step of sucking air in the cavity formed between the sheet and adhering the decorative sheet to the molding surface of the movable mold, a step of clamping the movable mold and the fixed mold, and a molten resin in the cavity A step of molding a decorative article having a convex portion that is injected and integrated with a decorative sheet; and a movable mold and a fixed mold A step of opening the mold, to constitute a decorative article as a step of taking out from the mold.

  Therefore, according to the present invention, a decorative product having a convex portion on the decorative surface can be easily obtained.

  Moreover, the device for manufacturing a decorative product according to the present invention includes a movable mold having a molding surface including a concave portion that forms a convex portion on the decorative surface, and a fixed die having a molding surface that forms a surface opposite to the decorative surface. A cutting mechanism for forming a hole in the decorative sheet having the same shape as the outer edge shape of the concave portion, and the outer edge of the hole and the concave portion of the decorative sheet. An air leakage prevention mechanism that presses the decorative sheet toward the movable molding surface side while closing the hole of the decorative sheet disposed on the movable molding surface so as to coincide with the outer edge is provided.

  Therefore, the device for manufacturing a decorative product of the present invention can easily manufacture a decorative product having a convex portion on the decorative surface.

It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is sectional drawing which shows one Embodiment of the manufacturing method of the decorating product of this invention. It is a perspective view which shows an example of the decorating article of this invention. It is a top view explaining the method of forming a hole in a decorating sheet. It is sectional drawing which shows an example of a cutting mechanism. It is sectional drawing which shows an example of a cutting piece removal mechanism. It is sectional drawing which shows an example of a static elimination mechanism and a dust collection mechanism. It is sectional drawing which shows an example of a cutting piece holding mechanism. It is sectional drawing which shows an example of a movable nest. It is sectional drawing which shows an example of a movable nest. It is sectional drawing which shows an example of the mechanism which pinches | interposes a decoration sheet.

  Hereinafter, an example of an embodiment is explained about a manufacturing method of a decoration product of the present invention, and a manufacturing device of a decoration product used for it.

<Method for producing decorative products>
The method for manufacturing a decorative product according to the present invention includes a movable mold 20 having a molding surface 20b including a recess 20a that forms a convex portion 60 on the decoration surface, and a fixed surface having a molding surface 21b that forms a surface opposite to the decoration surface. A step of forming a pair of molds composed of a mold 21 and forming a hole 5a having the same shape as the outer edge of the recess 20a in the decorative sheet 5 before being supplied between the molds; and a molding surface of the movable mold 20 The step of arranging the decorative sheet 5 so that the outer edge of the hole 5a of the decorative sheet 5 and the outer edge of the recess 20a coincide with each other at 20b (see FIG. 1), and decorating while closing the hole 5a of the decorative sheet 5 A step of pressing the sheet 5 to the molding surface 20b side of the movable mold 20 (see FIG. 2), and air in a cavity formed between the molding surface 20b of the movable mold 20 and the decorative sheet 5 is sucked and applied. A step of closely attaching the decorative sheet 5 to the molding surface 20b of the movable mold 20 (see FIG. 3) A step of clamping the movable die 20 and the fixed die 21 (see FIG. 4), a step of injecting a molten resin into the cavity and molding the decorative article 7 having the convex portion 60 integrated with the decorative sheet 5; (See FIGS. 5 and 8), a step of opening the movable die 20 and the fixed die 21 (see FIG. 6), and a step of taking out the decorative article 7 from the mold (see FIG. 7). It is what.

  The mold includes a movable mold 20 and a fixed mold 21. The movable mold 20 has a molding surface 20b that forms a decorative surface of a decorative product. On the molding surface 20 b of the movable mold 20, a concave portion 20 a that forms the convex portion 60 on the decorative surface of the decorative article 7 is formed. In this embodiment, the convex part 60 of the decorative article 7 has a cylindrical shape (see FIG. 8). For this reason, the recess 20a of the movable mold 20 is provided with a nest 20c for forming a hollow portion of the protrusion 60. In addition, it is good to form the suction hole (not shown) for attracting | sucking the decorating sheet 5 and making it closely_contact | adhere to the shaping | molding surface 20b in the shaping | molding surface 20b of the movable mold | type 20. The fixed mold 21 has a molding surface 21b that forms a surface opposite to the decorative surface. The fixed mold 21 is formed with a gate for injecting molten resin into a cavity formed between the movable mold 20 and the fixed mold 21 by clamping the mold. Further, the fixed mold 21 may be formed with a protruding pin for releasing the injection-molded decorative product. The mold may be provided with a clamp mechanism (not shown) in the movable mold 20 in order to fix the decorative sheet 5 in between.

  The decorative sheet 5 is a laminate in which a decorative layer 51 is formed on a base sheet 50. The decorative layer 51 is a layer including an adhesive layer, a metal thin film layer, a design layer, a release layer, and the like. As a method for forming the decorative layer 51, a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method, or a coating method such as a gravure coating method, a roll coating method, or a die coating method can be used. The decorative layer 51 can add decorativeness and functionality to the decorative product. The decorative sheet 5 is formed with holes 5a before the decorative sheet 5 is supplied between the molds. That is, the hole 5a is formed outside the mold. In this embodiment, since the convex part 60 of the decorative article 7 is cylindrical, the outer edge shape of the concave part 20a of the movable mold 20 is circular, and the hole 5a of the decorative sheet 5 is also formed in a circular shape. As a method for forming the hole 5a, there are a method of forming the blade portion 31 by rotating it in the circumferential direction of the hole 5a (see FIG. 9), and a method of forming by punching with the blade portion 31. The size of the hole 5a formed in the decorative sheet 5 may be the same as the size of the outer edge of the concave portion 20a of the movable mold 20, and may be larger than the outer edge of the concave portion 20a.

  Two or more holes 5a may be formed in the decorative sheet 5 arranged on the molding surface 20b. In that case, the holes are formed at a predetermined distance. If it does in this way, it can prevent that a decorating sheet tears on the basis of a hole with the tension | tensile_strength applied to the decorating sheet 5. FIG.

  The process of forming the hole 5a in the decorative sheet 5 includes receiving the blade 31 and the blade 31 installed on one upper surface of the mold and the other upper surface of the mold when the mold is clamped. The decorative sheet 5 to be supplied next between the molds may be sandwiched between the part 30 and the decorative sheet 5 may be formed with a hole 5a having the same shape as the outer edge shape of the recess 20a (FIG. 4). reference). In the present embodiment, the blade portion 31 attached to the main body 32 is installed on the upper surface of the fixed die 21, and the receiving portion 30 is installed on the upper surface of the movable die 20. After clamping, the blade portion 31 is rotated to form a circular hole 5a having the same circular shape as the outer edge shape of the concave portion 20a of the movable die 20 in the decorative sheet 5 sandwiched between the blade portion 31 and the receiving portion 30. . At this time, the decorative sheet 5 in which the holes 5a are formed is fed between the movable mold 20 and the fixed mold 21 after the mold is opened. In the present embodiment, the blade portion 31 is installed on the upper surface of the fixed mold 21, and the receiving portion 30 is installed on the upper surface of the movable mold 20. Therefore, since the hole 5a is formed by the blade portion 31 from the decorative layer 51 side, chips of the decorative layer 51 are less likely to be generated than when formed from the base sheet 50 side.

  Moreover, the process of forming the hole 5a in the decorating sheet 5 is the blade part installed in the upstream of the flow direction of the decorating sheet 5 rather than the movable mold | type 20 before the process of taking out the decorating article 7 from a metal mold | die. The decorative sheet 5 to be supplied next between the molds is sandwiched between 31 and the receiving part 30 that receives the blade part 31, and a hole 5a having the same shape as the outer edge shape of the recess 20a is formed in the decorative sheet 5. (See FIG. 10). In the present embodiment, the cutting mechanism 3 in which the blade portion 31 and the receiving portion 30 are integrated is installed on the movable upper surface. Thus, when the cutting mechanism 3 is an integral type, for example, an air cylinder, a hydraulic cylinder, or the like is used (see FIG. 10A), or the weight of the blade 31 is used (see FIG. 10B). Thus, the decorative sheet 5 can be punched out by the blade portion 31, and the hole 5a can be formed. Since the integrated cutting mechanism 3 forms the hole 5a by punching, the shape of the hole 5a is not limited to a circle, and a shape such as a polygon or an ellipse can also be formed. Since the cutting mechanism 3 is an integral type, the hole 5a can be formed at an arbitrary timing as long as it is before the step of taking out the decorative product from the mold. Moreover, in this embodiment, since the blade part 31 is installed in the decoration layer 51 side, the hole 5a will be formed from the decoration layer 51 side, and compared with the case where it forms from the base sheet 50 side. Chips of the decorative layer 51 are less likely to occur.

  The decorative sheet 5 in which the holes 5a are formed is sent to the molding surface 20b of the movable mold 20 by using, for example, a decorative sheet feeding device. At this time, the decorating sheet 5 is arranged so that the outer edge of the hole 5a of the decorating sheet 5 and the outer edge of the recess 20a of the movable mold 20 coincide (see FIG. 1). In the present embodiment, the shapes of the hole 5a and the recess 20a are circular. Therefore, the decorating sheet 5 is positioned so that both circular shapes match. After completion of positioning, the decorative sheet 5 may be pressed against the movable mold 20 and fixed by a clamp mechanism (not shown).

  Next, the decorative sheet 5 is pressed to the molding surface 20b side of the movable mold 20 while closing the hole 5a of the decorative sheet 5 (see FIG. 2). The pressing force is set larger than the tension applied to the decorative sheet 5. By closing the hole 5a and pressing the decorative sheet 5, the volume of the cavity formed between the decorative sheet 5 and the molding surface 2b is reduced. Therefore, the air in the cavity can be quickly and reliably sucked in the step of bringing the decorative sheet 5 into close contact with the molding surface 20b of the movable mold 20 (see FIG. 3).

  In addition, the air in a cavity may be attracted | sucked only by plugging the hole 5a of the decorating sheet 5, and the decorating sheet 5 may be closely_contact | adhered to the molding surface 20b of the movable mold | type 20. FIG. In this case, for example, the nest for forming the convex portion of the decorative product is a movable nest 20d, and the movable nest 20d is moved so as to close the hole 5a (FIGS. 14A and 14B). reference).

  In the step of clamping the movable mold 20 and the fixed mold 21 (see FIG. 4), the decorative sheet that is next fed into the mold is sandwiched between the blade portion 31 and the receiving portion 30. At this time, the decorative sheet 5 may be fixed between the blade portion 31 and the receiving portion 30 by a clamping force, and a clamp member 33 biased by a spring 34 is provided on the blade portion 31 or the receiving portion 30 (see FIG. 16), and may be fixed by the biasing force of the spring 34.

  A decorative resin 7 having a convex portion 60 integrated with the decorative sheet 5 is molded by injecting molten resin into the cavity formed by clamping (see FIG. 5). As the resin, a general-purpose thermoplastic resin such as polystyrene resin, polyolefin resin, ABS resin or AS resin is preferably used. Other than that, polycarbonate resin, polyacetal resin, acrylic resin, polyethylene terephthalate resin, polybutylene terephthalate resin, engineering resin (polysulfone resin, polyphenylene sulfide resin, polyphenylene oxide resin, polyarylate resin, etc.) or polyamide resin Resin can be used. A reinforcing material such as glass fiber or an inorganic filler can be added to these resins. Natural rubber or synthetic rubber can also be used.

  After the injection molding, the movable mold 20 and the fixed mold 21 are opened (see FIG. 6). The base sheet 50 may be peeled off from the decorative layer 51 or may not be peeled off. In the case of peeling, it is preferable to use a substrate sheet having releasability or to coat a mold release agent on the substrate sheet. When not peeling, after taking out the decorative article 7, it is good to trim the decorative sheet on the outer periphery of the decorative article.

  Finally, the decorative article 7 is taken out from the mold (see FIG. 7). When the fixed pin 21 is provided with an ejector pin, the decorative article 7 can be easily taken out by protruding the ejector pin. As shown in the figure, the decorative article 7 can be held and taken out by evacuation using a suction cup attached to a jig.

  In the method for manufacturing a decorative product of the present invention, the step of forming the hole 5a in the decorative sheet 5 is to remove the cut piece 5b of the decorative sheet 5 cut out by the blade portion 31 from the receiving hole 30a provided in the receiving portion 30. May include. Examples of the removal method include a method of sucking the cut piece 5b (see FIG. 11) and a method of holding and removing the cut piece 5b (see FIG. 13). Examples of the method of sucking the cut piece 5b include a method of directly connecting the hose 81 extending from the suction machine 80 to the receiving hole 30a (see FIG. 11A). If comprised in this way, the cutting piece 5b which is an unnecessary part can be removed easily. As a method of holding and removing the cut piece 5b, for example, a method of holding and removing the cut piece 5b by evacuating the suction pad 111 can be cited (see FIG. 13). Since the cutting piece 5b is held by the suction pad, the cutting piece can be more reliably removed.

  The method for manufacturing a decorative product of the present invention may further include a step of blowing ions for removing static electricity of the base sheet 50 from the base sheet 50 side of the decorative sheet 5 (see FIG. 12). . If comprised in this way, since static electricity will be removed by the sprayed ion, the micro dust adhering to the base sheet 50 side by electrostatic attraction can be easily separated from the base sheet 50. Since minute dust is not sandwiched between the movable molding surface and the decorative sheet, a hollow due to minute dust is hardly formed on the decorative surface of the decorative product.

  Moreover, you may further provide the process of attracting | sucking the chip | tip at the time of forming the hole 5a in the decorating sheet 5 from the base sheet 50 side of the decorating sheet 5 (refer FIG. 12). Since chips adhere to the base sheet 50 by electrostatic attraction, this step may be combined with the above-described charge removal step. If comprised in this way, the micro dust and chips adhering to the base sheet 50 by the sprayed ion can be easily separated from the base sheet 50, and the separated dust and chips can be sucked easily. .

<Decoration product manufacturing equipment>
The decorated article manufacturing apparatus 1 of the present invention has a movable mold 20 having a molding surface 20b including a recess 20a that forms a convex portion 60 on the decoration surface, and a molding surface 21b that forms a surface opposite to the decoration surface. A cutting mechanism 3 comprising a pair of molds composed of a fixed mold 21, a blade 31 and a receiving portion 30 for receiving the blade, and forming a hole 5 a having the same shape as the outer edge of the recess 20 a in the decorative sheet 5; The decorative sheet 5 of the movable mold 20 is closed while closing the hole 5a of the decorative sheet 5 arranged on the molding surface of the movable mold 20 so that the outer edge of the hole 5a of the decorative sheet 5 and the outer edge of the recess 20a coincide with each other. An air leakage prevention mechanism 4 for pressing the molding surface is provided (see FIG. 1).

  The cutting mechanism 3 includes a blade portion 31 attached to the main body 32 and a receiving portion 30 that receives the blade portion 31. The cutting mechanism 3 forms a hole 5a in the decorative sheet 5 having the same shape as the outer edge of the recess 20a of the movable mold 20 before supplying the decorative sheet 5 between the molds. Therefore, the cutting mechanism 3 is installed upstream of the mold in the flow direction of the decorative sheet 5. The blade 31 may be driven using an air cylinder or the like attached to the main body 32. The blade portion 31 may be a rotary blade or a punching blade. In the case of a rotary blade, the blade 31 is rotated in the circumferential direction of the hole formed in the decorative sheet 5 to form a hole (see FIG. 9). In the present embodiment, the blade part 31 and the main body 32 are installed on the upper surface of the fixed mold 21, and the receiving part 30 is installed on the upper surface of the movable mold 20. Thus, if the cutting mechanism 3 is a separation type, since each of the receiving part 30 and the main body 32 can be reduced in size, installation space can be suppressed. Moreover, it is easy to replace the blade when the blade portion 31 deteriorates.

  In addition, the blade part 31 is good to select a shape and a material according to the material of the base sheet 50 or the decoration layer 51. Moreover, the blade part 31 may be provided with the heating part which heats a blade part.

  The cutting mechanism 3 may be installed on the upstream side in the flow direction of the decorative sheet 5 with respect to the movable die 20 with the blade portion 31 and the receiving portion 30 on the movable die 20 side (FIG. 10A, ( b)). The cutting mechanism 3 is preferably installed on the upper surface of the movable mold 20 as in the case of the above-described separation type. Or it can also install in the lower surface of the decorating sheet feeder for supplying the decorating sheet 5, for example.

  The cutting mechanism 3 may be provided with a blade portion 31 on the fixed mold 21 side and a receiving portion 30 on the movable mold 20 side with the decorative sheet 5 interposed therebetween (see FIGS. 1 and 10 (a)). . If it does in this way, the hole 5a will be formed from the decorating layer 51 side of the decorating sheet 5, and the chip of the decorating layer 51 is hard to generate | occur | produce compared with the case where it forms from the base sheet 50 side.

  The air leakage prevention mechanism 4 presses the decorative sheet 5 against the molding surface 20b of the movable mold 20 while closing the hole 5a of the decorative sheet 5 (see FIG. 2). The air leakage prevention mechanism 4 includes an elastic body 40 for closing the hole 5 a of the decorative sheet 5. The material of the elastic body 40 is not particularly limited. However, when the hole 5a of the decorative sheet 5 is closed, the elastic body 40 is formed in the cavity formed between the decorative sheet 5 and the molding surface 20b including the concave portion 20a of the movable mold 20. It is preferable to use air that does not leak out of the cavity. In other words, when the air in the cavity is sucked through the suction hole (not shown) provided in the molding surface 20b of the movable mold 20, the material outside the cavity is not sucked through the elastic body 40. Use a good one. Examples thereof include rubbers such as silicon rubber, and porous materials such as sponges and rubbers in which pores are densely formed. Since the elastic body 40 made of the material as described above can easily apply a pressing force larger than the tension of the decorative sheet 5, it can firmly press the decorative sheet 5. In addition, for example, it is better to avoid the use of a metal having a high hardness such as a metal because the decoration layer 51 is damaged when contacting the decoration sheet 5. However, if the elastic body 40 which covered the metal etc. with said porous material is used, the decorating sheet 5 can be pressed firmly, without damaging the decorating layer 51. FIG.

  The decorative product manufacturing apparatus 1 of the present invention may further include at least one of a cut piece removing mechanism, a charge eliminating mechanism, and a dust collecting mechanism.

  The cut piece removing mechanism 8 removes the cut piece 5b of the decorative sheet 5 cut by the blade portion 31 through a receiving hole 30a provided in the receiving portion 30 (see FIG. 11). A hose 81 extending from the suction device 80 is directly connected to a receiving hole 30a provided in the receiving portion 30 (see FIG. 11A). If it does in this way, the cutting piece 5b can be moved to the left side of a figure with the negative pressure which generate | occur | produced with the suction machine 80, and it can collect in the suction machine 80 through the hose 81. Moreover, you may provide the integration | stacking part 82 between the receiving part 30 and the hose 81 (refer FIG.11 (b)). In this configuration, the hose 81 is not directly connected to the receiving hole 30 a, and the cut piece 5 b falls to the accumulating portion 82, so that the cut piece 5 b is not easily clogged in the hose 81.

  The static elimination mechanism 9 is installed on the base sheet 50 side of the decorative sheet 5 and sprays ions for removing static electricity on the base sheet 50. Moreover, the dust collection mechanism 10 is installed on the base sheet 50 side of the decorative sheet 5 and sucks chips when the hole 5a is formed in the decorative sheet 5 (see FIG. 12). In the figure, the decorative article manufacturing apparatus 1 includes both a static elimination mechanism 9 and a dust collection mechanism 10. The static elimination mechanism 9 and the dust collection mechanism 10 are installed on the downstream side in the flow direction of the decorative sheet 5 with respect to the receiving portion 30 and on the base sheet 50 side of the decorative sheet 5.

  The static elimination mechanism 9 sprays ions on the base sheet 50 to remove static electricity generated on the base sheet 50 as indicated by the wavy arrow in FIG. In such a configuration, even if minute dust or the like in the air adheres to the base sheet 50 by electrostatic attraction, the static electricity is removed by the sprayed ions, and the fine dust is separated from the base sheet 50. be able to. Therefore, in the manufacturing apparatus having the static elimination mechanism 9, since minute dust is not sandwiched between the movable molding surface and the decorative sheet, a hollow due to minute dust is difficult to be formed on the decorative surface of the decorative product. .

  The dust collection mechanism 10 uses the negative pressure generated by the dust collector 11 to suck chips generated when the holes 5 a are formed in the decorative sheet 5 through the hose 12. The dust collector 11 sucks and collects chips toward the left side of FIG. Since chips adhere to the base sheet 50 by electrostatic attraction, the dust collection mechanism 10 and the charge removal mechanism 9 are preferably used in combination. Also, rollers 100 may be installed above and below the static elimination mechanism 9 (see FIG. 12). When there is the roller 100, it is possible to prevent the decorative sheet 5 from coming into close contact with the receiving unit 30 and the charge removal mechanism 9 by the suction force of the dust collector 11.

  In addition, the dust collector 11 can also be used instead of the suction device 80 of the above-described cut piece removing mechanism 8 (see FIG. 11). In this case, the hose 12 of the dust collection mechanism 10 may be connected to the static elimination mechanism 9 and the receiving hole 30a or to the static elimination mechanism 9 and the accumulation portion 82. In such a configuration, the cut piece 5b and chips can be sucked with a single dust collector.

  The apparatus for producing a decorative article of the present invention may further include at least one of the following mechanisms or structures.

  The cut piece holding mechanism 110 sucks the cut piece 5b of the decorative sheet 5 cut by the blade portion 31 with a suction pad 111 provided on the receiving portion 30 (see FIG. 13A). A pipe is connected to the suction pad 111, and the cut piece 5b is sucked to the suction pad 111 by evacuating the cut piece 5b and the suction pad 111 through the pipe. The suction pad 111 is moved backward with, for example, an air cylinder (see FIG. 13B), the vacuuming is interrupted, and the cut piece 5b is dropped onto the stacking portion 112. In this configuration, the cut piece 5b can be reliably removed.

  As shown to Fig.14 (a), the movable insert 20d may be sufficient as the insert for forming the convex part of a decorating article. By moving the movable insert 20d so as to close the hole 5a of the decorative sheet 5 (see FIG. 14B), air leakage in the cavity can be minimized. Therefore, instead of the air leakage prevention mechanism 4 (see FIG. 1), the movable nest 20d can be used. The movable insert 20d can be moved using, for example, an air cylinder or a hydraulic cylinder. The movable nest 20d is configured to move in a direction recessed from the molding surface 20b before the decoration sheet 5 is moved away from the molding surface 20b and moved in the flow direction of the decoration sheet after molding. It can also be done (see FIG. 15). If it does in this way, it can prevent that the hole 5a of the decorating sheet 5 is caught by the movable nest | insert 20b at the time of decorating sheet movement.

1: Decorative product manufacturing apparatus 10: Dust collecting mechanism 11: Dust collector 12, 81: Hose 20: Movable type 20a: Recessed part 20b: Molded surface 20c: Nest 20d: Movable type nest 21: Fixed mold 21b: Molded surface
3: Cutting mechanism 30: Receiving portion 30a: Receiving hole 31: Blade portion 32: Main body 33: Clamp member 34: Spring
4: Air leakage prevention mechanism 40: Elastic body
5: Decorating sheet 50: Base sheet 51: Decorating layer 5a: Hole 5b: Cut piece
6: Molded product 60: Convex part
7: Decorative items
8: Cutting piece removal mechanism 80: Negative pressure generator 82, 112: Accumulation unit
9: Static elimination mechanism 100: Roller 110: Cutting piece holding mechanism 111: Suction pad

Claims (15)

Preparing a pair of molds comprising a movable mold having a molding surface including a concave portion forming a convex portion on the decorative surface and a fixed mold having a molding surface forming a surface opposite to the decorative surface; Forming a hole having the same shape as the outer edge shape of the recess in the decorative sheet before being supplied between the molds;
Disposing the decorative sheet on the molding surface of the movable mold so that the outer edge of the hole of the decorative sheet and the outer edge of the recess coincide with each other;
Pressing the decorative sheet against the molding surface side of the movable mold while closing the hole of the decorative sheet;
A step of sucking air in a cavity formed between the molding surface of the movable mold and the decorating sheet to bring the decorating sheet into close contact with the molding surface of the movable mold;
Clamping the movable mold and the fixed mold;
A step of molding a decorative product having the convex portion integrated with the decorative sheet by injecting molten resin into the cavity;
Opening the movable mold and the fixed mold; and
And a step of taking out the decorative article from the mold.   The step of forming the hole in the decorating sheet includes a blade part installed on one upper surface of the mold and a blade part installed on the other upper surface of the mold when the mold is clamped. 2. The method includes: sandwiching the decorative sheet supplied between the molds next to a receiving portion, and forming a hole having the same shape as the outer edge shape of the recess in the decorative sheet. The manufacturing method of the decorating article as described in 2.   The step of forming the hole in the decorative sheet includes a blade portion installed upstream of the movable mold in the flow direction of the decorative sheet before the step of taking out the decorative product from the mold. Including the decorative sheet supplied between the molds next to the receiving part receiving the blade part, and forming a hole having the same shape as the outer edge shape of the recess in the decorative sheet. The method for producing a decorative article according to claim 1, which is a waste product.   The process of forming the said hole in the said decorating sheet includes forming the said hole with the said blade part from the decorating layer side of the said decorating sheet, The process as described in any one of Claims 1-3. A method for manufacturing ornaments.   The step of forming the hole in the decorative sheet includes rotating the blade portion in the circumferential direction of the hole to form the hole in the decorative sheet, or the decorative sheet is formed by the blade portion. The method for producing a decorative product according to any one of claims 1 to 4, comprising punching and forming the hole in the decorative sheet.   The process of forming the said hole includes removing the cut piece of the said decorating sheet cut out by the said blade part from the receiving hole provided in the said receiving part. Method of decorative products.   The production of a decorative product according to any one of claims 1 to 6, further comprising a step of spraying ions on the base sheet from the base sheet side of the decorating sheet to remove static electricity from the base sheet. Method.   The decorative article according to any one of claims 1 to 7, further comprising a step of sucking chips when the hole is formed in the decorative sheet from the base sheet side of the decorative sheet. Manufacturing method. A pair of molds including a movable mold having a molding surface including a concave portion that forms a convex portion on the decorative surface, and a fixed mold having a molding surface that forms a surface opposite to the decorative surface;
A cutting mechanism comprising a blade portion and a receiving portion for receiving the blade portion, and forming a hole having the same shape as the outer edge shape of the concave portion in the decorative sheet;
The decorative sheet is made of the movable mold while closing the hole of the decorative sheet disposed on the molding surface of the movable mold so that the outer edge of the hole of the decorative sheet and the outer edge of the concave portion coincide with each other. An apparatus for manufacturing a decorative article, comprising: an air leakage prevention mechanism that presses against the molding surface side.   The said cutting part is the manufacturing apparatus of the decorative article of Claim 9 with which the said blade part is installed in one upper surface of the said metal mold | die, and the said receiving part is installed in the other upper surface of the said metal mold | die. .   The decorative product according to claim 9, wherein the cutting mechanism is configured such that the blade part and the receiving part are disposed on the movable mold side and upstream of the movable mold in the flow direction of the decorative sheet. Manufacturing equipment.   The decorative product according to claim 10 or 11, wherein the cutting mechanism is configured such that the blade portion is installed on the fixed mold side and the receiving unit is installed on the movable mold side with the decorative sheet interposed therebetween. Manufacturing equipment.   The cutting piece removal mechanism which removes the cut piece of the said decorating sheet cut off by the said blade part through the receiving hole provided in the said receiving part is further provided. Decorative product manufacturing equipment.   The apparatus for manufacturing a decorative product according to any one of claims 9 to 13, further comprising a static elimination mechanism that is installed on the base sheet side of the decorating sheet and blows ions that remove static electricity on the base sheet.   The dust collecting mechanism according to any one of claims 9 to 14, further comprising a dust collecting mechanism that is installed on the base sheet side of the decorative sheet and sucks chips when the hole is formed in the decorative sheet. Decorative product manufacturing equipment.

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