JP2008037056A - Method and apparatus for manufacturing vehicular interior trim part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a shape such as that of a circumference of an opening from being defected. <P>SOLUTION: Provided is a method for manufacturing a vehicular interior trim part 32 for forming a skin material 46 into the form of a mold surface 45 by vacuuming a surface skin material 46 being set on a mold 39 through a vacuuming circuit 51, while categorizing the mold surface 45 into plural parts according to their significance, and the vacuum suction is carried out in order from a part with higher significance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle interior part manufacturing method and apparatus.

  A vehicle such as an automobile is provided with an interior part 2 such as an instrument panel 1 as shown in FIG. The instrument panel 1 has a configuration having various openings 4 used for air-conditioning air outlets and other uses with respect to the general surface 3 constituting the surface design.

  Such an interior component 2 is manufactured using, for example, an interior component manufacturing apparatus 5 as shown in FIG. The interior part manufacturing apparatus 5 includes a base portion 7 and a mold device 8 installed on the upper portion of the base portion 7. The mold apparatus 8 includes a lower mold 9 and an upper mold 10 placed on the lower mold 9. A mold opening / closing device 11 capable of opening and closing the upper mold 10 is installed between the base portion 7 and the upper mold 10.

  The mold apparatus 8 is a foam mold, the lower mold 9 is a cavity mold, and the upper mold 10 is a core mold. A cavity portion having the shape of the instrument panel 1 is formed on the upper surface of the lower mold 9 so as to be recessed. As shown in FIG. 6, the mold surface 15 of the cavity portion can set the skin material 16 of the instrument panel 1. Moreover, it is comprised so that a foaming agent (chemical | medical solution) can be inject | poured with respect to the back surface side of the set skin material 16. FIG. The mold surface 15 of the cavity portion is stepped so that the portion 15b corresponding to the opening 4 has a step portion 15c and is stepped higher than the portion 15a corresponding to the general surface 3 of the instrument panel 1. Is formed.

  The base portion 7 is provided with a vacuum drawing circuit 21 that can shape the skin material 16 into the shape of the mold surface 15 by vacuum-sucking the skin material 16 set on the lower mold 9.

  The vacuum drawing circuit 21 includes a vacuum source 22 such as a vacuum pump, a common pipe 23 having one end connected to the suction side of the vacuum source 22, and an open / close type provided in the middle of the common pipe 23. An electromagnetic valve 24, a distribution manifold 25 connected to the other end of the common pipe 23, a plurality of distribution pipes 26 connected at one end to the manifold 25, and the other end of the distribution pipe 26 The nozzle part 28 which is attached and can be connected to the vacuum quotation hole part 27 formed in plural between the lower mold 9 and the base part 7 on the mold surface 15 is provided. Further, as shown in FIG. 5, a vacuuming switch 29 capable of opening / closing the electromagnetic valve 24 is provided.

  Then, the skin material 16 is set on the lower mold 9, the upper mold 10 is closed using the mold opening / closing device 11, the vacuum switch 29 is pressed to open the solenoid valve 24, and the skin is connected by the vacuum circuit 21 connected to the lower mold 9. The skin material 16 is shaped into the shape of the mold surface 15 by vacuum-sucking the material 16. Thereafter, by injecting a foaming agent into the back surface side of the skin material 16, the foaming agent is foamed inside the mold apparatus 8 to form a foam layer on the back surface side of the skin material 16, and the instrument panel 1 is manufactured.

In addition, in the technique similar to the above, for example, in-mold molding or the like exists (see, for example, Patent Document 1).
JP-A-3-63115

  However, in the means for manufacturing the interior part 2 by the interior part manufacturing apparatus 5, the vacuum drawing circuit 21 is used as one system, and all parts of the skin material 16 are vacuum-sucked at the same time. The portion 15a corresponding to one general surface 3 may be adsorbed first, and a state may occur in which the skin material 16 and the mold surface 15 do not match at the portion 15b corresponding to the opening 4 or the stepped portion 15c around the portion 15b. As a result, there was a risk that the shape around the opening 4 would collapse and cause a shape defect such as an aardale or a shackle.

  In order to solve the above-mentioned problems, in the invention described in claim 1, a vehicle interior part manufacturing method for shaping a skin material into a shape of a mold surface by vacuum-sucking the skin material set in a mold with a vacuum drawing circuit The method is characterized in that the mold surface is classified into a plurality of parts according to importance, and vacuum suction is performed in multiple stages in order from the part having the highest importance.

  In the invention described in claim 2, a mold capable of setting the skin material and a vacuum connected to the mold and capable of shaping the skin material into the shape of the mold surface by vacuum-sucking the set skin material. In the vehicle interior part manufacturing apparatus including a drawing circuit, the vacuum drawing circuit includes a plurality of site-specific vacuum suction systems capable of vacuum suction independently for each of a plurality of sites classified according to importance. It is characterized in that each part vacuum suction system is configured to be operable with a time difference so that vacuum suction can be performed in multiple stages in order from the part with the highest importance.

  In the invention described in claim 3, the mold surface is classified into at least a portion corresponding to the opening and a portion corresponding to the general surface, and the portion corresponding to the opening is determined from the portion corresponding to the general surface. Is also characterized by high importance.

  According to the invention of claim 1, the mold surface is classified into a plurality of parts according to the importance, and the vacuum suction is performed in multiple stages in order from the parts with the highest importance. The higher the part is, the more the mold surface and skin material are in a state of matching. Therefore, compared to the case where all parts are vacuum-adsorbed at the same time, shape defects can be greatly reduced and prevented, thereby improving the product yield. be able to.

  According to the invention of claim 2, the vacuum drawing circuit is provided with a plurality of site-specific vacuum suction systems capable of vacuum suction independently for each of a plurality of sites whose mold surfaces are classified according to importance. By configuring the adsorption system to be operable with a time difference so that vacuum adsorption can be performed in multiple stages in order from the most important part, an apparatus configuration capable of performing the method of claim 1 can be obtained. it can.

  According to the invention of claim 3, the mold surface is classified into at least a portion corresponding to the opening and a portion corresponding to the general surface, and the portion corresponding to the opening is more than the portion corresponding to the general surface. By setting the degree of importance to be high, the part corresponding to the opening that is difficult to be sucked comes to be sucked before the part corresponding to the general surface. It is possible to prevent the occurrence of shape defects such as a shackle.

  The purpose of making it possible to prevent shape defects such as the periphery of the opening is classified into multiple parts according to importance, and vacuum suction is performed in multiple stages in order from the most important part. It was realized by means of letting it be done.

  Hereinafter, embodiments embodying the present invention will be described together with illustrated examples.

  1 to 3 show an embodiment of the present invention.

  First, the configuration will be described. A vehicle such as an automobile is provided with an interior part 32 such as an instrument panel 31 as shown in FIG. The instrument panel 31 has a configuration having various openings 34 used for air-conditioning air outlets and other applications with respect to the general surface 33 constituting the surface design.

  Such an interior part 32 is manufactured using, for example, an interior part manufacturing apparatus 35 as shown in FIG. The interior part manufacturing apparatus 35 includes a base part 37 and a mold apparatus 38 installed on the base part 37. The mold apparatus 38 includes a lower mold 39 and an upper mold 40 placed on the upper part of the lower mold 39. A mold opening / closing device 41 that can open and close the upper mold 40 is installed between the base portion 37 and the upper mold 40. As the mold opening / closing device 41, for example, a cylinder device or the like is used. In addition, an opening / closing guide device that can guide opening / closing of the upper die 40 is provided between the lower die 39 and the upper die 40 as necessary.

  The mold apparatus 38 is a foam mold here, the lower mold 39 is a cavity mold, and the upper mold 40 is a core mold. On the upper surface of the lower mold 39, a cavity portion having the shape of the instrument panel 31 is formed to be recessed. As shown in FIG. 3, the mold surface 45 of the cavity portion can set the skin material 46 of the instrument panel 31. Moreover, it is comprised so that a foaming agent (chemical | medical solution) can be inject | poured with respect to the back surface side of the set skin material 46. FIG. The mold surface 45 of the cavity part is stepped so that the part 45b corresponding to the opening 34 has a step part 45c and is one step higher than the part 45a corresponding to the general surface 33 of the instrument panel 31. Is formed. That is, the instrument panel 31 is formed in a state in which a portion 45b corresponding to the opening 34 is retracted, and then the opening 34 is finished by cutting the step portion 45c. The mold apparatus 38 is not limited to the foaming mold, and may be an injection mold that can insert-mold the skin material 46, or a shaping-only mold that performs only the shaping of the skin material 46.

  In addition, the base portion 37 is provided with a vacuum drawing circuit 51 capable of shaping the skin material 46 into the shape of the mold surface 45 by vacuum-sucking the skin material 46 set on the lower die 39.

  The vacuum circuit 51 includes a vacuum source 52 such as a vacuum pump, a common pipe 53 having one end connected to the suction side of the vacuum source 52, and a branch pipe branched from the other end of the common pipe 53. Passages 54, 55, open / close solenoid valves 56, 57 appropriately provided in the middle of the common pipe 53 and branch pipes 54, 55, and a distribution connected to the other ends of the branch pipes 54, 55 Manifolds 58, 59, a plurality of distribution pipes 60, 61 connected at one end to the manifolds 58, 59, and the lower mold on the mold surface 45 attached to the other ends of the distribution pipes 60, 61. The nozzle portions 64 and 65 connectable to a plurality of vacuum citation holes 62 and 63 formed between the base 39 and the base portion 37 are provided. Further, as shown in FIG. 2, vacuuming switches 66 and 67 capable of opening and closing the electromagnetic valves 56 and 57 are provided.

  In this embodiment, the skin material 46 is set in the mold (lower mold 39) and the vacuum circuit 51 connected to the mold (lower mold 39). In the vehicle interior part 32 manufacturing means for shaping the skin material 46 into the shape of the mold surface 45 by vacuum suction, the mold surface 45 is classified into a plurality of parts 45a and 45b according to the importance, The vacuum suction is configured so that it can be performed in multiple stages in order from the parts 45a and 45b having high importance.

  For this purpose, the vacuum suction circuit 51 is provided with a plurality of site-specific vacuum suction systems 68 and 69 capable of vacuum suction independently for each of the plurality of sites 45a and 45b in which the mold surface 45 is classified according to the importance. The separate vacuum suction systems 68 and 69 are configured to be operable with a time difference so that vacuum suction can be performed in multiple stages in order from the parts 45a and 45b having higher importance.

  More specifically, for example, the mold surface 45 is classified into at least a portion 45b corresponding to the opening 34 and a portion 45a corresponding to the general surface 33, and the portion 45b corresponding to the opening 34 is set to the general surface. The importance is set to be higher than that of the portion 45 a corresponding to 33.

  One site-specific vacuum adsorption system 68 includes a branch pipe 54, a solenoid valve 56, a manifold 58, a distribution pipe 60, a nozzle part 64, a vacuum reference hole part 62, and a vacuum drawing switch 66. The part-specific vacuum suction system 68 is made to correspond to the part 45 b corresponding to the opening 34. In this case, the electromagnetic valve 56 is attached to the common pipe 53 on the upstream side, but it is the same even if attached to the branch pipe 54. The vacuum reference hole 62 is not provided directly in the part 45b, but is provided in the vicinity of the step part 45c in the part 45a corresponding to the general surface 33 so as to surround the part 45b corresponding to the opening 34. Is effective. In addition, when the opening 34 is large, it is provided directly in the region 45b in addition to this.

  The other site-specific vacuum adsorption system 69 includes a branch pipe 55, a solenoid valve 57, a manifold 59, a distribution pipe 61, a nozzle part 65, a vacuum reference hole part 63, and a vacuum pulling switch 67. The part-specific vacuum suction system 69 is made to correspond to the part 45 a corresponding to the general surface 33.

  Furthermore, the two vacuum suction switches 66 and 67 provided for the vacuum suction systems 68 and 69 for each part may be manually operated in order with a time difference. It is also possible to use such a configuration that the automatic operation can be performed sequentially with a time difference.

  Next, the operation of this embodiment will be described.

  A skin material 46 is set on the lower die 39, the upper die 40 is closed using the die opening / closing device 41, the vacuum switches 66 and 67 are pressed to open the electromagnetic valves 56 and 57, and the vacuum drawing circuit 51 connected to the lower die 39. The skin material 46 is shaped into the shape of the mold surface 45 by vacuum-sucking the skin material 46.

  At this time, the vacuum suction switch 66 is operated first, and the vacuum suction of the portion 45b corresponding to the opening 34 by the one-part vacuum suction system 68 is performed in advance, and then the vacuum suction switch 67 is operated. Then, the vacuum suction of the part 45a corresponding to the general surface 33 by the other part-by-part vacuum suction system 69 is performed later.

  Then, the mold surface 45 and the skin material 46 are first aligned around the part 45 b corresponding to the opening 34, and thereafter, the mold surface 45 and the skin material 46 in the part 45 a corresponding to the general surface 33. Will be performed.

  In the case of a foaming mold, after that, a foaming agent is injected into the back surface side of the skin material 46 to foam the foaming agent inside the mold apparatus 38 to form a foam layer on the back surface side of the skin material 46. A panel 31 is manufactured.

  Thus, according to this embodiment, the mold surface 45 is classified into a plurality of parts 45a and 45b according to the importance, and vacuum suction is performed in multiple stages in order from the parts 45a and 45b having the highest importance. By doing so, the more important parts 45a and 45b are in a state in which the mold surface 45 and the skin material 46 match each other, so the shape defects are greatly reduced compared to the case where all parts are vacuum-sucked simultaneously. Therefore, the product yield can be improved.

  The vacuum drawing circuit 51 is provided with a plurality of site-specific vacuum suction systems 68 and 69 capable of vacuum suction independently for each of a plurality of sites 45a and 45b in which the mold surface 45 is classified according to the importance. Since the vacuum adsorption systems 68 and 69 are configured to be operable with a time difference so that vacuum adsorption can be performed in multiple stages in order from the most important parts 45a and 45b, the above-described operations and effects can be realized. A feasible device configuration can be obtained.

  The mold surface 45 is classified into at least a part 45 b corresponding to the opening 34 and a part 45 a corresponding to the general surface 33, and a part 45 b corresponding to the opening 34 is a part corresponding to the general surface 33. By setting the degree of importance to be higher than 45a, the portion 45a corresponding to the opening 34 that is difficult to be sucked is sucked before the portion 45b corresponding to the general surface 33. It is possible to prevent the shape of the surroundings from collapsing and causing a shape defect such as an arthrare or a shackle.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, when a plurality of embodiments and modifications are shown, it is a matter of course that these possible combinations are included.

It is a perspective view of the interior parts for vehicles concerning the example of the present invention. It is a side view of the vehicle interior component manufacturing apparatus which manufactures the vehicle interior component of FIG. It is a longitudinal cross-sectional view of the lower mold | type part which shows the vacuum drawing circuit of the vehicle interior component manufacturing apparatus of FIG. It is a perspective view of the interior component for vehicles concerning a prior art example. It is a side view of the vehicle interior component manufacturing apparatus which manufactures the vehicle interior component of FIG. It is a longitudinal cross-sectional view of the lower mold | type part which shows the vacuum drawing circuit of the vehicle interior component manufacturing apparatus of FIG.

Explanation of symbols

32 Vehicle interior parts 33 General surface 34 Opening 39 type (lower type)
45 Mold surface 45a Part 45b Part 46 Skin material 51 Vacuum drawing circuit 68 Part-specific vacuum adsorption system 69 Part-specific vacuum adsorption system

Claims (3)

In a vehicle interior part manufacturing method for shaping a skin material into a shape of a mold surface by vacuum-sucking the skin material set in a mold with a vacuum drawing circuit,
A method of manufacturing an interior part for a vehicle, wherein the mold surface is classified into a plurality of parts according to importance, and vacuum suction is performed in multiple stages in order from the part with the highest importance. A vehicle interior part comprising a mold capable of setting a skin material, and a vacuum drawing circuit connected to the mold and capable of shaping the skin material into the shape of the mold surface by vacuum-sucking the set skin material In manufacturing equipment,
The vacuum drawing circuit is provided with a plurality of site-specific vacuum suction systems capable of vacuum suction independently for each of a plurality of sites classified according to importance.
An interior parts manufacturing apparatus for a vehicle, wherein each part vacuum suction system is configured to be operable with a time difference so that vacuum suction can be performed in multiple stages in order from the part with the highest importance. The mold surface is classified into at least a part corresponding to the opening and a part corresponding to the general surface, and the part corresponding to the opening is set to be more important than the part corresponding to the general surface. The vehicle interior part manufacturing apparatus according to claim 2.

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