JP4842453B2 - Interior lining component for automobile having decorative member, method for integrally molding the same, and apparatus therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for integrally molding a decorative member on an interior lining part for an automobile, and in particular, integrally molding the decorative member on an interior lining part for an automobile that can prevent the decorative member from falling down. And an improvement of the apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technique for integrally molding a decorative member made of another member on a part of a molded resin is known. For example, as an example of a molded resin using a decorative member, an interior lining part for an automobile such as a door trim, or a resin using a partially decorated member for a molded resin is known.
[0003]
These decorating members are integrally molded with the molding resin and the decorating member by injecting molten resin after being mounted in a molding die in advance.
Specifically, as shown in FIG. 5, a surface material body 110 is formed by bonding a skin material 112 to a base material 111 made of a thermoplastic resin or the like by vacuum forming or the like, and is set on the crimping die 130 side. On the other hand, the decorative member 120 such as cloth is positioned and set with respect to the mold 140 by preforming or vacuuming. Then, the molds 130 and 140 are clamped, and the decorative member 120 is bonded and fixed to the surface material body 110.
[0004]
When the decorative member 120 is bonded and fixed to the preformed surface material main body 110 in this way, the edge of the decorative member 120 is processed along the graining bar 150 of the mold 140 with the decorative member 120. Therefore, after the decorative member 120 is mounted, a gap is formed in the groove portion of the surface material main body 110. For this reason, there is a disadvantage in that the parting line of the edge portion of the decorative member 120 is shifted and the appearance is deteriorated. In addition, an adhesive is used for joining the decorative member 120 and the surface material body 110, and the adhesive for this joining is applied to the surface of the surface material body 110. There is a problem that it is difficult to apply an adhesive in the groove for edge processing, and there remains a problem in terms of adhesion.
[0005]
For this reason, as shown in FIG. 6, a resin serving as a base material is arranged in a molten state on the upper side of the press-fit lower mold 215, and a surface material (this example) is obtained by press-forming with a press-fit upper mold 214 and a press-fit lower mold 215. In this case, a technique has been proposed in which the surface material 213 is textured by the textured portion (wood textured bar) 216 at the same time as the door trim is formed (see, for example, JP-A-5-16163). In other words, the upper crimping die 214 is provided with a grained portion 216 (wood graining bar), and the lower crimping die 215 is provided with grooves 217 and 217 for graining and a resin (for example, polypropylene). ), The resin injection gates 218, 218, 218 for injection in a molten state are formed at predetermined intervals. Then, a predetermined amount of resin 219, 219, 219 required for molding the base material is injected from the resin injection gates 218, 218, 218, and the resin 219 serving as the base material is melted on the upper side of the press-fit lower mold 215. It is arranged so that Reference numeral 213 denotes a two-layer structure, and the two-layer structure (decorative member) 213 has a cloth member 212 bonded to a predetermined position on the surface side of the skin material 211 via an adhesive or the like.
[0006]
[Problems to be solved by the invention]
However, the technique for joining the decorative member simultaneously with the molding as described above is to form a groove at the boundary portion between the surface material and the decorative member, and so that the edge of the decorative member is cut into the groove with a wood grain bar. Since it comprises, as shown in FIG. 7, when the decoration member K is provided with the raising part, the raising part of the decoration member K is crushed by the metal mold | die 214 containing the graining part (wood graining bar) 216. In other words, there are inconveniences that the touch feeling is hard and the merchantability is poor. In particular, as shown in FIG. 7, hair fall occurs at the corner when the decorative member is put into the wood, which is inconvenient in the touch and appearance merchandise.
[0007]
In order to avoid this, conventionally, only the base material is molded, and the work of pasting the raised fabric in a separate process is performed, or the fabric without raising is not discernible even if the fabric falls down. In order to prevent the hair from falling down, use a layer of expensive urethane laminated on the back side of the fabric, or recover the hair falling after forming by raising it with steam etc. It was.
[0008]
An object of the present invention is to form a decorative member integrally with an automotive interior lining component, and to provide an automotive interior lining component including a decorative member capable of preventing hair fall even with an inexpensive fabric, and It is an object of the present invention to provide a method and an apparatus for integrally molding the same.
[0009]
[Means for Solving the Problems]
According to the method for integrally molding a decorative member on an automobile interior lining component of the present invention, the above-mentioned problem is that a decorative member provided with at least raised portions is arranged in a mold that opens in the vertical or horizontal direction. In a method of integrally molding a decorative member on an interior lining material part for an automobile, injecting resin to form a surface material, and integrally molding the decorative member on a part of the surface material, located on the decorative member side At least a corner of the decorative member, with a grained bar corresponding to the edge of the decorative member formed protruding from the mold, and a mold located on the surface material side where a groove is formed corresponding to the grained bar parts in higher than the resin temperature resin temperature of other portions of the surface material including and neighboring, by the decorative border the Kimekomi bar member, seen Kimekomi in the groove of the surface material, the corners of the decorative member Resin temperature of nearby surface material including part In a state where the resin temperature is higher than that of the other part, the resin thickness of only the corner of the surface material on the side sandwiching the decorative member with the wood grain bar is made larger than the resin thickness of the other part. Solved by achieving .
[0010]
In addition, according to the apparatus for integrally molding a decorative member on an automobile interior lining component of the present invention, the above-described problem is provided with a decorative member having at least raised portions in a mold that opens in the vertical or horizontal direction. In the apparatus for integrally molding the decorative member to the interior lining part for automobile, wherein the decorative member is disposed and the resin is injected to form a surface material, and the decorative member is integrally formed on a part of the surface material, The mold located on the decorative member side is formed by protruding a grained bar corresponding to the edge of the decorated member, and a mold located on the surface material side formed with a groove corresponding to the grained bar. The cavity located on the surface material side of the mold located on the surface material side, including at least the corners of the decorative member, is larger than the other cavity portions when clamping It formed as part, small At least a portion that becomes a space portion larger than the other cavity portion as a cavity portion on the surface material side including the corner portion of the decorative member is a corner portion on the side that sandwiches the decorative member with the wood grain bar This is solved by only the cavity portion corresponding to . In this way, only the cavity part on the surface material side in the vicinity including the corner part of the decorative member , particularly the cavity part corresponding to the corner part on the side sandwiching the decorative member with the graining bar, is used at the time of mold clamping. of forming a large space portion than the cavity portion, by forming the corner thicker, it becomes possible to resin temperature of vicinity of the corner portions of the decorative member is higher than that the resin temperature of the other sites, Since the conventional mold on the wood grain bar side can be left as it is, an inexpensive configuration can be achieved.
[0011]
According to the interior lining component for automobiles of the present invention, the object is for an automobile formed by integrally molding the decoration member and the surface material by embedding at least the edge side of the decoration member provided with raised portions into the groove portion of the surface material. In the interior lining component, among the resin wall thickness on the surface material side near the corner of the decorative member, the groove portion is formed in the groove portion by a grained bar formed protruding from a mold corresponding to the edge of the decorative member. It is solved by making the resin wall thickness of only the corner portion on the side sandwiching the decorating member between the wood-embedding bar larger than the resin thickness of the other part when the edge side of the decorating member is cut into the wood. .
[0012]
As described above, the resin heat of the base material is increased by thickening only the vicinity including the corner portion of the decorative portion terminal base material , in particular, the corner portion on the side sandwiching the decorative member with the grain-embedded bar . Cooling efficiency is reduced and the fabric does not fall down. In this way, since the decorative member is joined in a state in which the resin temperature in the vicinity including the corners of the decorative member is higher than the resin temperature of the other part, the decorative member provided with the raised hair can be an inexpensive material. It can be used, and the hair fall of the decorative member due to mold clamping will be restored even after opening the mold, because the raised part of the corner of the decorative member is restored due to the high resin temperature, This can be prevented and the design is improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.
[0014]
1 to 4 show an embodiment of the present invention. FIG. 1 is a schematic perspective view showing a state in which a decorative member is integrally formed with an interior lining part for an automobile, and FIG. 2 is a mold of a manufacturing apparatus. FIG. 3 is a partial cross-sectional view of an interior lining part for an automobile in which a decorative member is integrally formed, and a graph for explaining a wall thickness of a terminal and a cooling time until falling down.
[0015]
The automobile interior lining component S of the present invention uses polypropylene (pp) as the surface material (base material) 10 and is made of a fabric provided with raised hairs 21 as the decorative member 20. In this example, a single piece of fabric is taken as an example. However, the back surface may be provided with a cushion layer. In short, the decorative member 20 needs to have at least raised portions 21.
[0016]
As the molds 30 and 40, any of a mold that opens in the vertical direction and a mold that opens in the left and right direction may be used. When tightened, the decorative member 20 is placed in the mold, and resin is injected into the surface material 10, and the interior member lining part S for automobile is integrally formed with a part of the surface material 10. It is the apparatus which integrally molds the decorating member 20.
[0017]
This apparatus is provided with a gate (not shown), and this gate is for injecting a resin (for example, polypropylene) as a surface material (base material) in a molten state, and is formed at a predetermined interval from each other. . The gate supplies molten resin supplied from an injection molding machine into a cavity formed by the molds 30 and 40. Moreover, you may comprise the arrangement | positioning of the decorating member 20 so that it may hold | maintain to the metal mold | die facing the metal mold | die at the side of resin supply. As in the conventional example shown in FIG. 6, it may be configured to be held on both sides of the mold.
[0018]
A wood grain bar 41 corresponding to the edge 20a of the decorating member 20 is formed on the mold 40 located on the decorating member 20 side in this example so as to protrude. The configuration of the wood grain bar 41 can be configured in the same manner as in the prior art.
[0019]
On the other hand, the other mold 30 located on the surface material 10 side has a recess 31 corresponding to the grained bar 41. And the groove part 11 of the metal mold | die 30 located in the surface material 10 side is formed so that the part corresponded to the corner | angular part at the time of the decorating member 20 of the surface material (base material) 10 being pushed into the groove part 11 may become thick. The cavity part 32 on the decorative member arrangement side of the part to be formed is formed as a cavity part having a larger space than other cavity parts at the time of mold clamping.
[0020]
That is, conventionally, the cavity portion corresponds to the thickness of the surface material 10, but in the present invention, the cavity portion 32 on the side where the decorative member 20 is disposed is larger than the thickness of the other surface material 10. A space is formed.
[0021]
Therefore, the surface material 10 in the vicinity including the corners of the decorative member 20 is formed to be thicker than the other parts. This wall thickness fluctuates in relation to the cooling time. For example, as shown in FIG. 4, when the wall thickness is B, if the cooling time is longer than the predetermined time A, the surface material (base material) 10 Since the heat is dissipated and cooled, the fabric falls down, but the hair does not fall down before being cooled.
[0022]
In short, the cooling time for the general surface is required to be A seconds or longer (because it is deformed), and therefore the wall thickness of the fabric end is required to be at least B mm. Therefore, if the cooling time is short, a thin wall thickness is sufficient, and even if the cooling time is long, the wall thickness is restored. Further, if the cooling time is too short, there is a disadvantage that the mark of the mold is attached to the product. As described above, the relationship between the wall thickness and the cooling time has a predetermined time (molding time) necessary for filling the resin and molding the surface material 10, and at the same time, if the cooling time is short, mold marks are generated, If the cooling time is long, hair fall cannot be prevented, so it is necessary to select an optimal wall thickness and cooling time.
[0023]
And the method of integrally forming a decorating member on an automobile interior lining component is performed as follows. That is, a predetermined amount of resin necessary for molding the surface material (base material) 10 is injected from the resin injection gate, and placed on the mold 30 on the surface material 10 side in a molten state. At this time, the mold 40 on the decorative member 20 side is lowered to the preliminary molding height.
[0024]
Then, a wood grain bar 41 protruding from the metal mold 40 located on the decorative member 20 side and a metal mold 30 formed with a recess 31 formed corresponding to the wood grain bar 41 are clamped, While forming the surface material 10, the decorative member 20 is grained into the groove 11 of the surface material 10.
[0025]
And the resin used as the surface material 10 is solidified, and this surface material 10 and the decorating member 20 are integrally molded and joined. At this time, since the clearances of the molds 30 and 40 are substantially constant, the decorative member 20 is supplied by the resin pressure (for example, 30 Kg / cm ² ) of the resin to be the surface material (base material) 10 supplied at the time of molding. It is in a slightly compressed state.
[0026]
After the molding, as shown in FIG. 2, when the mold 40 is lifted and the wood grain bar 41 is pulled out from the groove portion 11 of the surface material 10, the hair collapse does not occur due to the restoring force of the decorative member 20. This is because, as shown in FIG. 3, the resin thickness on the surface material side in the vicinity including the corners of the decorative member 20 is formed thicker than other parts, so only this part is heated more than other parts. The raised state can be restored and the appearance can be improved. That is, since the resin thickness as shown by the wavy line X in FIG. 3 has conventionally been present, the hair fall as shown by the wavy line Y has occurred. However, in the present invention, the resin thickness is large and no hair fall occurs.
[0027]
If comprised as mentioned above, since the shaping | molding of the surface material 10 by resin, the shaping | molding of the decorating member 20, and the graining of the decorating member 20 can be performed simultaneously, reduction of an installation and a process can be aimed at, especially a decorating member. Since the restoring force of the vicinity including the corner | angular part of the decorating member 20 when putting into the 20 groove part 11 can be enlarged and hair fall can be prevented, a touch and external appearance commercial property can be made favorable.
[0028]
【The invention's effect】
As described above, according to the present invention, the vicinity including the corner portion of the decorative portion terminal base material , in particular, by thickening only the corner portion on the side sandwiching the decorative member with the wood grain bar is thickened. The cooling efficiency of the resin heat of the base material is lowered, and the fabric does not fall down. In this way, since the decorative member is joined in a state in which the resin temperature in the vicinity including the corners of the decorative member is higher than the resin temperature of the other part, the decorative member provided with the raised hair can be an inexpensive material. It can be used, and the hair fall of the decorative member due to mold clamping will be restored even after opening the mold, because the raised part of the corner of the decorative member is restored due to the high resin temperature, This can be prevented and the design is improved. Further, according to the present invention, it is possible to use a decorative member of any material as long as it is raised from a high-grade material to an inexpensive material.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a state in which a decorative member is integrally formed with an interior lining part for an automobile.
FIG. 2 is a partial cross-sectional view showing a state in which a mold of a manufacturing apparatus is clamped.
FIG. 3 is a partial cross-sectional view of an automotive interior lining component in which a decorative member is integrally formed.
FIG. 4 is a graph illustrating the thickness of the terminal and the cooling time until the hair falls.
FIG. 5 is an explanatory diagram of a conventional method.
FIG. 6 is an explanatory diagram of a conventional method.
FIG. 7 is a partial cross-sectional view of an interior lining part for an automobile in which a conventional decorative member is integrally formed.
[Explanation of symbols]
10 Surface material (base material)
11 Groove part 20 Decorating member 20a Edge 21 Brushed 30, 40 Mold 32 Cavity part 41 Wood grain bar

Claims (3)

In a mold that opens and closes in the vertical and horizontal directions, a decorative member provided with at least brushed portions is placed and a resin is injected to form a surface material, and the decorative member is integrally formed on a part of the surface material. In a method of integrally molding a decorative member to an automotive interior lining material part,
A wood grain bar corresponding to the edge of the decoration member formed to protrude from the metal mold located on the decoration member side, and a metal mold located on the surface material side where a groove portion is formed corresponding to the wood grain bar. In the state where the resin temperature of the surface material in the vicinity including at least the corners of the decorative member is higher than the resin temperature of other parts, the edge of the decorative member is embedded in the groove portion of the surface material by the wood texture bar. See
The state in which the resin temperature of the surface material in the vicinity including the corner portion of the decorative member is higher than the resin temperature of the other part is the corner portion on the side of the surface material that sandwiches the decorative member with the wood bar. A method of integrally molding a decorative member on an interior lining part for an automobile, characterized in that the resin thickness of only the resin is made larger than that of other parts. In a mold that opens and closes in the vertical and horizontal directions, a decorative member provided with at least a decorative member provided with brushed parts is arranged to inject a resin into a surface material, and the decorative material is partially applied to the surface material In an apparatus for integrally molding a decorative member to an interior lining part for an automobile that integrally molds a member, a wood grain bar corresponding to an edge of the decorative member is formed on a mold located on the decorative member side. And is formed of a mold located on the surface material side in which grooves are formed corresponding to the wood grain bar, and at least a corner of the decorative member of the mold located on the surface material side Forming the cavity part on the surface material side in the vicinity including the cavity part larger than other cavity parts at the time of clamping,
At least a portion that becomes a space portion larger than the other cavity portion as a cavity portion on the surface material side including the corner portion of the decorative member is a corner portion on the side that sandwiches the decorative member with the wood grain bar. An apparatus for integrally molding a decorative member to an interior lining part for an automobile, characterized in that it is only a corresponding cavity part . In an automobile interior lining part formed by integrally molding the decorative member and the surface material by embedding the edge side of the decorative member provided with at least brushed into the groove portion of the surface material, in the vicinity including the corner portion of the decorative member Of the resin wall thickness on the surface material side, when the edge side of the decorating member is grained into the groove by the grained bar protruding from the mold corresponding to the edge of the decorating member, An interior lining part for an automobile formed by integrally molding a decorative member , wherein the resin thickness of only the corner portion on the side sandwiching the decorative member is made larger than the resin thickness of other portions.

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