JP2004209687A - Method and apparatus for integrally molding decorative member on trim component for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for integrally molding a decorative member on a trim component for a vehicle, capable of simply manufacturing the decorative member of which the terminal line has good appearance in the trim component for the vehicle equipped with the decorative member, and an apparatus therefor. <P>SOLUTION: In the apparatus for integrally molding the decorative member on the trim component for the vehicle, the decorative member 20 is arranged in a mold opened in an up and down direction or a left and right direction and a resin is injected in the mold to be integrally molded along with the decorative member 20. The mold is equipped with a movable mold 1, the slide block 4 opposed to the movable mold 1 and fixed molds 2a and 2b adjacent to the slide block 4. An edge 3 for pressing the boundary part 23 of the decorative surface 22 and terminal part 21 of the decorative member 20 is provided to the movable mold 1 and the recessed part 5 engageable with the edge 3 is provided to the slide block 4. A first cavity K<SB>1</SB>is formed so as to be surrounded by the edge 3 of the movable mold 1, the recessed part 5 of the slide block 4 slid toward the movable mold 1 and the fixed mold 2b and a second cavity is formed so as to be surrounded by the movable mold 1, the fixed mold 2a and the slide block 4 slid in a direction separated from the movable mold 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for integrally forming a decorative member on a vehicle interior part, and more particularly, to an interior part for a vehicle in which an end portion of the decorative member is embedded in a base material to improve appearance and product appeal. The present invention relates to a method and an apparatus for integrally forming a decorative member.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technique for integrally forming a decorative member made of another member on a part of a molding resin has been 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 lining or a side lining, or a resin using a partially decorated member in a molded resin is known.
[0003]
These decorative members are preliminarily mounted on a molding die and then injected with a molten resin to integrally mold the molded resin and the decorative member.
Specifically, as shown in FIGS. 10 to 13, the decorative member 120 such as cloth is positioned and set with respect to the fixed mold 102 side by preform or vacuum evacuation, and the movable mold 101 is set to the fixed mold 102 side. And the resin J is injected into the cavity K formed by the movable mold 101 and the fixed mold 102 to form a molded product.
[0004]
In the above-described conventional molding method, the edge treatment of the decorative member 120 is performed along the wood grain bar 103 provided on the movable mold 101 side. The groove 130 is formed in the material 110. Therefore, as shown in FIG. 14, when the terminal portion 121 of the decorative member 120 was short, the base resin was visible in the groove 130. Alternatively, as shown in FIG. 15, when the terminal portion 121 of the decorative member 120 is long, the folded portion of the terminal portion 121 is seen, and there is a disadvantage that the appearance is deteriorated.
[0005]
For this reason, it was necessary to cut the decorating member 120 with high precision, which was troublesome. Further, even if the decorating member 120 is cut with high precision, there is a problem that if the position is shifted at the time of disposition, the same problem as described above occurs.
[0006]
In order to avoid this, it is necessary to make the wood grain bar 103 itself thin in order to improve the marketability by narrowing the groove 130. However, when the wood grain bar 103 is made thinner in this way, the wood grain bar 103 breaks. Or could be damaged.
[0007]
In order to solve the above inconvenience, as shown in FIG. 16 or FIG. 17, a gap 104 is formed in a mold, and the terminal section 121 of the decorating member 120 is held in the gap 104 so that the decorating member 120 is displaced. A technique has been proposed to eliminate this.
[0008]
However, in the above-described technique, since the terminal portion 121 of the decorative member 120 needs to be inserted into the gap 104 provided on the mold side, there is a problem that the manufacturing process is complicated. In addition, it is necessary to cut the decorative member 120 with high precision so as to have a predetermined size, which is troublesome.
[0009]
Alternatively, in the mold, a releasable clamp body is provided around the area covered with the skin material, and the end portion of the skin material is sandwiched between the mold and the clamp body to melt in the area covered with the skin material. The resin is injected, the skin material is pressed against the blade provided on the movable mold as the molten resin fills, the skin material is cut and the molten resin flows out to the outer region of the skin material, and the skin material and the resin are integrally formed A technique has been proposed (see, for example, Patent Document 1).
[0010]
[Patent Document 1]
JP-A-2000-141378 (page 4, FIG. 6)
[0011]
According to the above technology, the blade provided in the mold cuts the skin material at a predetermined position by using the pressure of the molten resin and its heat, so that the skin material terminal is placed in the groove, and the skin material terminal is cut. It is possible to form a molded product with a good line appearance.
[0012]
[Problems to be solved by the invention]
However, the technique disclosed in Patent Document 1 has a problem that it is necessary to provide the blade with a blade, so that the processing of the die is troublesome and the blade is easily damaged. In addition, since it is necessary to cut the skin material, there is a problem that the material of the skin material is restricted, and it takes time to manage the injection pressure of the molten resin.
[0013]
An object of the present invention is to integrally form a decorative member with a vehicle interior component that can easily manufacture a decorative member having a good appearance of a terminal line in a vehicle interior component having the decorative member. It is to provide a method and an apparatus.
[0014]
[Means for Solving the Problems]
According to the present invention, according to the present invention, in a method of integrally forming a decorative member on a vehicle interior component, a first edge provided with an edge for pressing a boundary between a decorative surface of the decorative member and a terminal portion is provided. Arranging the decorating member between a mold and a second mold provided with a concave portion engageable with the edge, the second mold being provided to face the first mold; A step of clamping the first mold and the second mold and clamping a boundary portion of the decorative member between the edge and the concave portion, and a step formed including the edge and the concave portion. A step of injecting a resin into one cavity and integrally molding the resin and a terminal portion of the decorative member, separating the first mold and the second mold, and forming the recess and the integral molding. Forming a second cavity between the applied resin and the decorative member, and injecting the resin into the second cavity , It is solved by having the a step of taking out the molded article from between the first mold and the second mold.
[0015]
As described above, according to the present invention, the boundary between the decorative surface of the decorative member and the terminal portion is pressed by the edge, and the resin is injected into the first cavity to integrally mold the terminal with the decorative member. Then, the mold is separated to form a second cavity, and the resin is injected into the second cavity and molded, whereby the terminal portion of the decorative member is placed in the resin molded in each cavity. Since it is embedded, it is possible to obtain a vehicle interior component having a good appearance without the terminal portion of the decorative member being exposed from the surface of the molded product.
[0016]
Further, according to the apparatus for integrally molding a decorative member on a vehicle interior part of the present invention, the above object is achieved by disposing a decorative member in a mold that is opened vertically or horizontally and injects resin. In an apparatus for integrally molding a decorating member with a vehicle interior part in which the resin and the decorating member are integrally molded, the mold includes a movable mold, a slide block facing the movable mold, and an adjacent to the slide block. With a fixed mold, the movable mold is provided with an edge that presses a boundary between the decorative surface of the decorating member and the terminal portion, the slide block is provided with a concave portion that can be engaged with the edge, A first cavity is formed to be surrounded by the edge of the movable die, the recess of the slide block slid toward the movable die, and the fixed die, and the movable die and the fixed die , Who are separated from the movable mold A slide block is slid, the second cavity surrounded by is formed, is solved by.
[0017]
Thus, the device of the present invention is configured to press the boundary between the decorative surface of the decorative member and the terminal portion with the edge provided on the movable die and the concave portion provided on the slide block, Since the conventional wood grain bar is not used, the mold durability can be improved.
[0018]
In addition, the length of the terminal portion of the decorative member is approximately 15 mm or less, the height of the edge is approximately 0.5 to 5.0 mm, and the clearance of the first cavity is approximately 1.5 to 3.5 mm. By doing so, the boundary portion of the decorative member is reliably held between the edge and the concave portion. In addition, by setting the dimensions described above, it is possible to obtain high merchantability without the terminal portion of the decorative member protruding from the product surface.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, but can be variously modified within the scope of the present invention.
[0020]
1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view showing an example of a vehicle interior part, and FIGS. 2 to 6 are devices according to the present invention and manufacture of a vehicle interior part. FIG. 7 is a sectional view of a vehicle interior part, and FIG. 8 is an explanatory view showing the size of each part of a mold.
[0021]
The molded product formed by the present invention is an interior part S for a vehicle provided with a decorative member such as cloth, and is, for example, a door lining of an automobile as shown in FIG.
[0022]
As shown in FIG. 2, the apparatus for manufacturing a molded product includes a first mold located on the product design surface side and a second mold located on the product back surface side. As the mold, any of a mold that opens in the vertical direction and a mold that opens in the horizontal direction may be used.
[0023]
The first mold is a movable mold 1 and is configured to be movable by a drive mechanism (not shown) or the like. As the driving mechanism, known means such as a hydraulic device, a pneumatic device, and a spring type can be used.
[0024]
The movable mold 1 is provided with an edge 3 projecting from the surface of the mold as shown in FIG. The edge 3 is formed by processing a mold surface into an R shape. The edge 3 is formed along the boundary 23 between the decorative surface 22 of the decorative member 20 and the terminal portion 21 when the decorative member 20 is sandwiched between the movable mold 1 and the slide block 4. I have.
[0025]
The second mold includes a pair of fixed dies 2a and 2b and a slide block 4 located between the fixed dies 2a and 2b. The fixed dies 2a and 2b have a desired shape, and a passage and a gate (not shown) penetrating the fixed dies 2a and 2b are formed. The molten resin (for example, polypropylene) in a molten state is supplied to the cavity through the passage and the gate.
[0026]
The slide block 4 is configured to be slidable between a pair of fixed dies 2a and 2b by a driving device (not shown). In addition, as a drive mechanism, a known device such as a hydraulic device, a pneumatic device, and a spring type can be used.
[0027]
The slide block 4 has a recess 5 that can be engaged with the edge 3 of the movable mold 1 when the mold is clamped. When the decorative member 20 is sandwiched between the movable mold 1 and the slide block 4, the terminal portion 21 of the decorative member 20 is located in the concave portion 5. Further, the edge 3 is pressed against the concave portion 5, and the boundary portion 23 between the decorative surface 22 of the decorative member 20 and the terminal portion 21 is sandwiched between the edge 3 and the concave portion 5.
[0028]
When the mold is clamped, the slide block 4 moves to the movable mold 1 side as shown in FIG. 3 to clamp the decorative member 20 between the movable mold 1 and the movable block 1 as described above. first forming a cavity K ₁ between the mold 2b. Further, when the slide block 4 is slid in a direction away from the movable mold 1, as shown in FIG. 5, the movable mold 1, a slide block 4, the fixed type 2a, 2b, the second cavity K ₂ between the It is formed.
[0029]
When that actually produce moldings, as shown in FIG. 5, the second cavity K ₂ is a molded article 30 in the process of production to be located in the movable mold 1 side, the slide block 4, the fixed type 2a, 2b , Formed between. The molded product 30 in the middle of manufacture is composed of the decorative member 20 and the surface material 10.
[0030]
In order to manufacture a molded article having good appearance, the length of the terminal portion 21 of the decorating member 20, the movable mold 1, the fixed molds 2a and 2b, and the sizes of the cavities may be set as follows.
[0031]
FIG. 8 shows a preferred example of the length of the terminal portion 21 of the decorating member 20, the size of the cavity formed by the movable mold 1 and the fixed molds 2a and 2b, or the mold. 8, the terminal portion 21 of the decorative member 20 can be securely held between the edge 3 of the movable mold 1 and the concave portion 5 of the slide block 4, and after molding. The terminal part 21 of the decorating member 20 does not come out of the product surface, so that it is possible to form a vehicle interior component S that is suitable for appearance.
[0032]
The height x of the edge 3 of the movable mold 1 is preferably formed in a range of approximately 0.5 to 5.0 mm, and more preferably, 2.0 mm.
[0033]
Further, the clearance y formed between the slide block 4 and the movable mold 1, that is, the clearance y of the first cavity is approximately 1.5 mm to 3.5 mm, and more preferably 2.5 mm. It is suitable. When the mold has the above size, it is preferable that the terminal portion 21 of the decorative member 20 be 15 mm or less.
[0034]
Note that FIG. 9 is a reference diagram illustrating an unfavorable example of the state of the terminal portion of the decorative member. As shown in FIG. 9, when the height of the edge 3 or the length of the terminal portion 21 of the decoration member 20 is not appropriate, the decoration member 20 is not properly held, or the terminal portion 21 floats. Would. For this reason, as described above, it is desirable to appropriately adjust the length of the terminal portion of the decorating member and the sizes of the mold and the cavity.
[0035]
Next, a process of manufacturing the vehicle interior part S by the device having the above-described configuration will be described. First, as shown in FIG. 2, when the mold is opened, between the movable mold 1 and the fixed dies 2a, 2b and the slide block 4, along the fixed dies 2a, 2b and the slide block 4. The decoration member 20 is provided. The decorating member 20 is set by preforming, or is set by evacuation or positioning by a robot.
[0036]
Next, as shown in FIG. 3, the decorative member 20 is sandwiched between the movable mold 1 and the slide block 4. At this time, the terminal 21 of the decorative member 20 is located in the recess 5 of the slide block 4. Further, the edge 3 of the movable mold 1 is pressed against the concave portion 5, and the boundary portion 23 between the decorative surface 22 of the decorative member 20 and the terminal portion 21 is sandwiched between the edge 3 and the concave portion 5.
[0037]
As described above, the boundary portion 23 of the decorating member 20 is pressed against and held by the edge 3, so that in the resin injecting step described below, the injected resin is moved between the back surface of the decorating member 20 and the slide block 4. Can be prevented.
[0038]
When decorative member 20 is held, as shown in FIG. 4, injecting molten resin J into the first cavity K _1. That is, a predetermined amount of molten resin J required for molding the surface material 10 of the vehicle interior component S is injected from the resin injection gate provided in the fixed mold 2b, and the resin is melted in the _first cavity K1. It is arranged in a state.
[0039]
Thereafter, the decorative member 20 and the molten resin J are integrally molded by clamping and pressing. While maintaining the mold clamping state, cooling for hardening the molten resin J is performed, the decorating member 20 and the resin are integrated, and the decorating member 20 and the surface material 10 are integrated. Is formed.
[0040]
Next, as shown in FIG. 5, the slide block 4 is retracted. At this time, the molded product 30 being manufactured is sandwiched and fixed between the movable mold 1 and one fixed mold 2b, and is located on the movable mold 1 side. By sliding block 4 is retracted, the slide blocks 4, the fixed type 2a, 2b, between the molded article 30 in the process of production, the second cavity K ₂ is formed.
[0041]
Then, as shown in FIG. 6, for injecting the molten resin J into the second cavity K _2. That is, a predetermined amount of molten resin J required for molding the back surface material 40 of the vehicle interior component S is injected from the resin injection gate provided in the fixed mold 2a, and the resin is melted in the _second cavity K2. It is arranged in a state.
[0042]
Thereafter, by applying clamping pressure, the molded article 30 in the process of production, integrally molded and supplied molten resin J into the second cavity K _2. While maintaining the mold-clamped state, cooling for hardening the molten resin J is performed, the molded article 30 being manufactured and the resin are integrated, and the decorative member 20, the surface material 10, and the back material 40 are integrated. Thus, the vehicle interior part S is formed.
[0043]
After the molding is completed, the mold is opened and the completed vehicle interior part S is taken out as shown in FIG. In the vehicle interior component S of this example, the terminal portion 21 of the decorating member 20 is substantially parallel to the surface of the decorating member 20 and is embedded in the resin located on both sides of the decorating member 20. In addition, the terminal 21 of the decorative member 20 does not protrude on the product surface, and the interior component S for a vehicle having high merchantability can be obtained.
[0044]
Further, even if there is some variation in the dimensions of the decorative member 20, the terminal portion 21 of the decorative member 20 is buried in the resin and becomes invisible, so that the decorative member 20 is cut with high precision as in the related art. This eliminates the necessity and improves the production efficiency.
[0045]
【The invention's effect】
As described above, according to the present invention, the terminal portion of the decorative member is embedded in the resin and subjected to the terminal treatment, and the terminal portion does not appear on the surface of the molded product. Even if there is a certain degree of variation, it is possible to stably produce a molded article having a good appearance without causing a decrease in commerciality.
[0046]
In addition, the labor for cutting the decorative member with high accuracy is omitted, and it is not necessary to position and position the decorative member with high accuracy. Therefore, it is possible to improve the manufacturing efficiency and reduce the cost. .
[0047]
Furthermore, since the wood grain bar is not used as in the prior art for performing the terminal treatment of the decorative member, the durability of the mold can be ensured. Further, the mold is composed of a movable mold, a fixed mold, and a slide block, and does not require a special mechanism. Therefore, the apparatus can be manufactured at low cost without increasing the cost.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a vehicle interior component of the present invention.
FIG. 2 is an explanatory view showing a manufacturing process of the device and the vehicle interior part according to the present invention.
FIG. 3 is an explanatory view showing a manufacturing process of the device and the interior part for a vehicle according to the present invention.
FIG. 4 is an explanatory view showing a manufacturing process of the device and the vehicle interior part according to the present invention.
FIG. 5 is an explanatory view showing a manufacturing process of the device and the vehicle interior part according to the present invention.
FIG. 6 is an explanatory view showing a manufacturing process of the device and the vehicle interior part according to the present invention.
FIG. 7 is a sectional view of a vehicle interior part.
FIG. 8 is an explanatory view showing the size of each part of the mold.
FIG. 9 is a reference diagram illustrating an example of an unfavorable state of the terminal portion of the decorative member.
FIG. 10 is an explanatory diagram of a conventional method.
FIG. 11 is an explanatory diagram of a conventional method.
FIG. 12 is an explanatory diagram of a conventional method.
FIG. 13 is an explanatory diagram of a conventional method.
FIG. 14 is an explanatory view showing a conventional vehicle interior part.
FIG. 15 is an explanatory view showing a conventional vehicle interior part.
FIG. 16 is an explanatory diagram of a conventional method.
FIG. 17 is an explanatory diagram of a conventional method.
[Explanation of symbols]
1 movable mold 2a, 2b fixed die 3 Edge 4 slide blocks 5 recess 10 surface material 20 decorative member 21 terminal portion 22 Kakazarimen 23 boundary portion 30 during manufacture of the molded article 40 backsheet J molten resin _K 1, _{K 2} cavity S Interior parts for vehicles

Claims (3)

In a method of integrally forming a decorative member on a vehicle interior part,
A first mold provided with an edge for pressing a boundary portion between the decorative surface of the decorating member and the terminal portion; and a first mold provided to face the first mold and capable of engaging with the edge. Arranging the decorating member between the second mold provided with the concave portion,
A step of clamping the first mold and the second mold, and clamping a boundary of the decorative member between the edge and the recess;
Injecting a resin into a first cavity formed including the edge and the concave portion, and integrally molding the resin and a terminal portion of the decorative member,
A step of separating the first mold and the second mold, and forming a second cavity between the recess and the integrally molded resin and the decorating member;
Injecting a resin into the second cavity;
Removing the molded product from between the first mold and the second mold. A method for integrally molding a decorative member with a vehicle interior part. In a device that arranges a decorative member in a mold that opens in the vertical or horizontal direction, injects resin, and integrally molds the decorative member to a vehicle interior part that integrally forms the resin and the decorative member,
The mold includes a movable mold, a slide block facing the movable mold, and a fixed mold adjacent to the slide block,
The movable die is provided with an edge that presses a boundary between the decorative surface of the decorative member and the terminal portion, and the slide block is provided with a recess that can be engaged with the edge,
A first cavity is formed surrounded by the edge of the movable mold, a concave portion of the slide block slid toward the movable mold side, and the fixed mold;
A decorating member for a vehicle interior part, wherein a second cavity is formed by being surrounded by the movable mold, the fixed mold, and a slide block slid in a direction away from the movable mold. For integrally molding The terminal length of the decorative member is approximately 15 mm or less, the height of the edge is approximately 0.5 to 5.0 mm, and the clearance of the first cavity is approximately 1.5 to 3.5 mm. An apparatus for integrally forming a decorative member on the vehicle interior part according to claim 2.

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