JPH07237234A - Skin-integrated type molding and its manufacture - Google Patents

Abstract

PURPOSE:To ensure that a presentable product can be mass-produced at a low cost using a simple step sequence by bonding a base molding member of a thermoplastic resin having specified holes arranged by an anchor effect, to a unwoven fabric skin material formed integrally with the base molding member including a hole position. CONSTITUTION:A skin material 2 is held between a pin 6 and the lower surface side of a recessed part 3A in a top force 3 of a die, when the top force 3 completely descends onto the upper surface 4A of a bottom force 4. A base molding material 8 is extended almost uniformly excepting the part of the pin 6 between the top force 3 and the bottom force 4, and is molded as it is. At the same time, a skin 2 and a rear parcel shelf base 1A can be bonded together into one piece by an anchor effect. Further, a molding cooled after having been formed is taken out by separating the top force 3 from the bottom force 4. Consequently, both skin material 2 and base 1A are integrated into a single form, and the rear parcel shelf 1 with ventilation holes 10 formed on the base 1A can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin-integrated molded article and a method for manufacturing the same, and more particularly to a skin which is used as an interior member for a vehicle and can conceal functionally functioning holes on the back side of the skin. The present invention relates to a molded body product and a method for manufacturing the same.

[0002]

2. Description of the Related Art In a vehicle such as a passenger car, for example, in a rear parcel shelf provided as a top plate for covering a space between a rear seat and a rear window, a plurality of parcel shelf molding members are provided in a parcel shelf molding member for ventilation in a vehicle compartment. A punched hole is provided, and a perforated plate (hereinafter referred to as a drafter grill) having a vent hole is attached to the hole through a clip for fixing. Further, a breathable skin material is attached to the drafter grill with an adhesive in accordance with the skin material decoratively attached to the upper surface of the rear parcel shelf.

[0003]

However, in the conventional interior member and the manufacturing method therefor as described above, the doctor grill is formed separately, and then the above skin material is attached thereto by using an adhesive. Since the drafter grill to which the skin material is pasted is attached to the rear parcel shelf via the clip member, the number of parts is increased, and moreover, the drafter grill body made of resin material or the like is drilled. It takes too much time to attach the skin material. Further, the skin material attached to the drafter grill and the skin material of the rear parcel shelf itself had to be placed in the same color and size.

The object of the present invention is to provide a skin-integrated molded article which is inexpensive, has a good appearance by a simple process, and is suitable for mass production, and a method for producing the same, in order to solve the above-mentioned conventional problems. Especially.

[0005]

In order to achieve such an object, a skin-integrated molded article according to the present invention comprises a thermoplastic resin substrate molding member provided with predetermined holes, and the positions of the holes. And a non-woven fabric skin material integrally molded with the base molding member including the above by means of an anchor effect.

The method for manufacturing a skin-integrated molded article according to the present invention is such that one pin having a pin having a predetermined cross-sectional shape is provided at a predetermined position so as to be able to move forward and backward, and the one face is opposed to the one mold. The other mold for holding the peripheral portion of the material in an expanded state is prepared, and the uncured substrate molding material is supplied to the molding region between the one mold and the other mold, and the free end of the pin is provided. It is characterized in that the base molding material and the skin material are integrated by an anchor effect by press working of the one die and the other die while bringing the part into contact with the skin material.

[0007]

According to the method of molding a skin-integrated type of the present invention, the uncured substrate molding material supplied to the molding region by the pin provided on one mold is spread to the region excluding the pin during the press working to form the substrate. Simultaneously with the molding, the base resin can be soaked in the skin material that is held in the expanded state in the other mold and integrated by the anchor effect. Since it is possible to form a predetermined hole in the base, a plurality of steps of forming a hole in the base body of a molded product molded in the conventional manner and then attaching a skin material with an adhesive are simplified, The number of steps can be reduced.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows a constitutional example of a skin-integrated molded article according to the present invention together with a manufacturing method thereof. First, the procedure of the manufacturing method will be described with reference to FIGS. In the case of this example, an example of forming the rear parcel shelf by press molding will be shown as an example of the skin-integrated molded product. Further, FIG. 1D shows an example of the structure of the rear parcel shelf 1 molded in this way.

In FIGS. 1A to 1C, reference numeral 2 is a skin material of the rear parcel shelf 1. As the skin material 2, it is desirable to use a high density nonwoven fabric made of fibers such as polyethylene terephthalate. As a result, molding can be performed by a method common to thermoplastic resins, and sufficient air permeability can be maintained. Reference numerals 3 and 4 denote an upper mold and a lower mold for manufacturing a skin-integrated molded product according to the present invention, and the upper mold 3 has a recess 3A having a shape corresponding to the lower mold 4.
And a locking needle 5 for holding the skin material 2 in a stretched state is provided around the recess 3A. Further, one lower die 4 has a pin 6 for forming a hole in the base body 1A of the drafter grill 1 formed as shown in (D) through the steps shown in (B) and (C) with a resin material. It is elastically held by a spring 7 so that it can move back and forth.

Reference numeral 8 denotes a resin material (hereinafter referred to as a base molding material) for molding the base 1A, which is supplied on the flat upper surface 4A of the lower mold 4 in this example. As the base molding material 8, for example, polypropylene, which is a thermoplastic resin having excellent mechanical properties such as rigidity, bending fatigue resistance, heat resistance, and a melting point of about 180 ° C., is suitable.

Therefore, first, as shown in (A), a sufficient amount of the base molding material 8 to form the rear parcel shelf base 1A on the lower mold upper surface 4A is supplied, and at least the skin material 2 is supplied.
Also, the base molding material 8 is kept at a temperature at which it can be molded. Then, as shown in (B), the upper mold 3 is gradually pushed down in conformity with the lower mold 4, the free end of the pin 6 is brought into contact with the skin material 2, and the skin material is lifted and maintained, while the skin material 2
The base molding material 8 is extended into a space 9 formed between the lower mold upper surface 4A and the lower mold upper surface 4A.

In this case, the spring force of the spring 7 is the upper mold 3
When the upper skin 3 further descends after the skin material 2 held on the upper mold 3 comes into contact with the tip of the pin 6 as it descends, at least the lower surface of the display material 2 and the upper surface 4A of the lower mold 4 are descended. It suffices that the skin material 2 can be pushed upward so that a space 9 is formed between the skin material 2 and. Thus, when the upper die 3 has finished descending onto the lower die upper surface 4A as shown in (C), the pin 6 is in a form of holding the skin material 2 between the upper die 3 and the lower surface of the concave portion 3A, The base molding material 8 is spread between the upper mold 3 and the lower mold 4 in a substantially uniform state except for the pin 6 and molded as it is, and at the same time, the skin 2 and the rear parcel shelf base 1A are integrated by the anchor effect. Can be converted.

Therefore, after this, the molded product which has finished molding and is cooled is taken out by separating the upper mold 3 and the lower mold 4, whereby the skin material 2 and the base body 1A are integrated as shown in FIG. It is possible to obtain the rear parcel shelf 1 in which the ventilation holes 10 are formed in the base body 1A, and the ventilation holes are formed in the base body in the conventional manner, and then the skin material is attached to the base body using an adhesive. A skin-integrated type molded component can be obtained without the step of installing.

In the embodiment described above, as one basic example, one rear parcel shelf 1 is provided with one vent hole 10. However, as shown in FIG.
It is needless to say that the number of 0 may be plural, and it is not necessary to attach the skin material 2 after molding the base body 1A regardless of the number of the vent holes 10. Further, in the above-mentioned example, the upper mold is provided with a concave portion, and the lower mold is processed in such a manner that the lower mold is fitted into the concave mold. This is for forming a space for spreading the base forming material 8 between the upper surface of the lower mold and the depth of the recess formed in the upper mold need not be particularly deep. It suffices if the pin has a sufficient depth to achieve the above purpose in cooperation with the pin.

Further, although the configuration of the rear parcel shelf provided with the ventilation hole and the manufacturing method thereof have been described in the above-mentioned embodiments, the application of the present invention is not limited to this, and the rear parcel shelf is concealed in a door, for example. Door trim with holes for speaker installation that can be installed in a state, etc.,
The present invention can be widely applied to a molded product for attaching an optional component, which is covered with a skin material for makeup and has a functional hole communicating with the outside.

[0017]

As described above, according to the present invention, the uncured substrate molding material supplied to the molding region excluding the holes and the skin material are integrally molded by press working. The number of points and the manufacturing process can be reduced. Further, in the case of a draft par grill of a rear parcel with a ventilation hole, the application of the present invention makes it possible to manufacture the rear parcel without a separating line, and it is possible to obtain a good-looking rear parcel.

[Brief description of drawings]

FIG. 1 shows an embodiment of a skin-integrated molded article and a method for producing the same according to the present invention, a preparatory step (A) before molding, a molding step (B), a molding end step (C), and a cross section (D) of the molded article. It is an explanatory view shown by.

FIG. 2 is a configuration view showing a rear parcel shelf formed as a skin-integrated molded product according to the present invention by perspective views (A) and a partially enlarged view (B) of the rear parcel shelf viewed from the back side thereof.

[Explanation of symbols]

 1 Rear Parcel Shelf 1A Base 2 Skin Material 3 Upper Mold 3A Recess 4 Lower Mold 4A Top 5 Locking Needle 6 Pin 7 Spring 8 Base Molding Material 9 Space 10 (Ventilation) Hole

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location // B29K 105: 12 B29L 9:00 31:58

Claims (5)

[Claims] 1. A thermoplastic resin base molding member provided with predetermined holes and a non-woven fabric skin material integrally molded with the base molding member including the positions of the holes are bonded by an anchor effect. A skin-integrated molded product characterized by the following. 2. The skin-integrated molded article according to claim 1, wherein the hole is used as a vent hole, and the skin material has air permeability. 3. One mold in which a pin having a predetermined cross-sectional shape is provided at a predetermined position so as to be able to move forward and backward, and the other mold that faces the one mold and holds the peripheral portion of the skin material in a stretched state. And uncured substrate molding material is supplied to a molding region between the one mold and the other mold, and the one end mold is brought into contact with the free end portion of the pin to the skin material. A method for manufacturing a skin-integrated molded article, characterized in that the base molding material and the skin material are integrated by an anchor effect by press working with the other mold. 4. The one mold is a male mold, the other mold is a female mold, and the other mold is provided with a locking needle for holding the skin material in a stretched state. The method for producing a skin-integrated molded article according to claim 3. 5. The method for producing a skin-integrated molded article according to claim 3, wherein the base molding member is a thermoplastic resin, and the skin material is a non-woven fabric.