JPH0655558A - Method and apparatus for processing terminal of skin material of automobile upholstery - Google Patents

Abstract

PURPOSE:To efficiently process a terminal of a skin material in a short time and to reduce costs remarkably, by sliding a slide member to catch the skin material at an edge part of a resin core material when an upper and a lower mold for press molding are engaged with each other. CONSTITUTION:In order to obtain the automobile upholsteries, a skin material 12 is set within an upper and a lower mold 30, 40 for press molding, and the molds 30, 40 are engaged and clamped together after a half-molten resin as a material for a resin core material 11 is distributed and supplied onto the lower mold 30, so that the resin core material 11 is integrally molded with the skin material 12. When a terminal of the skin material is to be processed, a peripheral terminal part of the skin material 12 is temporarily hooked to a slide member 50 which is set a the lower face of the edge of the upper mold 40 and is movable back and forth while being inclined upward to the central part, of the mold 40. Women the molds 30, 40 are engaged with each other, the slide member 50 is adapted to slide slantwise upward, thereby to catch the skin material 12 at a terminal end 11a of the resin core material 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal treatment method and a terminal treatment device for a skin material in an automobile interior part.

[0002]

2. Description of the Related Art For example, a general construction of an interior part such as an automobile door trim is a skin material having a cushioning property and a decorative property on a surface side of a core material having shape retention and rigidity for mounting on a vehicle body panel. A laminated structure having a laminated structure is conventionally known.

FIG. 5 shows a structure of an automobile door trim 1 as a typical automobile interior part. The door trim 1 has a skin material 3 on a surface side of a resin core material 2 formed into a required shape. Is integrally attached, and the peripheral edge portion 3a of the skin material 3 is rolled up and adhered along the peripheral edge portion of the back surface of the resin core material 2, and the terminal treatment is performed.

The manufacturing process of the door trim 1 will be briefly described. First, as shown in FIG. 6, the skin material 3 is set on the set pin 4a of the upper mold 4 for mold press molding, and the lower mold for mold press molding is set. A semi-molten resin material 6 which is a material of the resin core material 2 is distributed and supplied onto the mold surface of 5.

Next, as shown in FIG. 7, the upper mold press molding die 4 is lowered, and the upper and lower molds 4 and 5 for mold press molding are engaged and clamped to each other so that the resin core material 2 is molded into a desired shape. While being molded, the resin core material 2 and the skin material 3 are integrated.

After that, as shown in FIG. 8, after the surplus skin material is cut while leaving the wound portion of the skin material 3, the peripheral edge portion 3a of the skin material 3 is arranged along the back surface side of the resin core material 2. Then, it is rolled up and bonded to complete the end treatment process of the skin material 3.

[0007]

As described above, in the conventional method of integrating the resin core material 2 and the skin material 3 by mold press molding, the end treatment of the skin material 3 is performed by mold press molding. After the material 2 and the skin material 3 are integrated, the step of cutting the skin material 3 along the trim shape of the skin material 3 with the rolled-in portion 3a remaining, and a peripheral edge portion of the skin material 3 It has been pointed out that a winding step of winding and sticking 3a on the back surface side of the resin core material 2 is necessary, and the number of steps is large, resulting in a significant cost increase.

Particularly in a mass-produced product such as the door trim 1, the increase in cost due to the large number of steps is a serious problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automobile interior part in which a resin core material and a skin material are integrally molded by mold press molding. An object of the present invention is to provide a method and an apparatus for end treatment of a skin material capable of simply and reliably performing the end treatment of the skin material.

[0010]

In order to achieve the above object, a method for terminal treatment of a skin material in an automobile interior part according to the present invention is to set the skin material in upper and lower molds for mold press molding, After the semi-molten resin that is the material of the resin core material is distributed and supplied onto the lower mold for mold press molding,
In an automobile interior part formed by integrally molding a resin core material and a skin material by engaging and pressing the upper and lower mold press molding dies, the upper mold for mold press molding is installed on the lower surface of the peripheral edge part, and the center The peripheral edge portion of the skin material is temporarily set on the slide member that can be advanced and retracted upward toward the side, and when the upper and lower molds for mold press molding are engaged with each other, the slide member is slid upwardly, It is characterized in that the skin material is wound around the edge portion of the resin core material.

Further, the apparatus used in the terminal processing method is
A mold press molding lower mold which has a desired mold surface and supplies semi-molten resin, which is a material of a resin core material, on the mold surface, and a mold which can be engaged with the mold press molding lower mold with a predetermined clearance. It is installed on the lower surface of the upper edge of the mold for press molding and the upper die for mold press molding, and moves forward and backward obliquely upward toward the center side by the operation of the drive cylinder in cooperation with the lifting operation of the upper mold for mold press molding. And a slide member.

[0012]

As apparent from the above construction, when the upper and lower molds for mold press molding are engaged with each other, the slide member installed on the periphery of the upper mold for mold press molding advances diagonally upward toward the center side, By using the molding upper mold and the slide member, the skin material and the resin core material are firmly integrated along the edge of the product.

Further, since the slide member slides obliquely upward, the skin material can be integrated with the edge portion of the core material while applying tension to the skin material.

Furthermore, the terminal processing device has a simple construction in which a slide member that moves forward and backward at an angle by a driving cylinder is installed on the upper die for mold press molding, and therefore, the reliability and accuracy of the skin material can be improved. Good terminal processing becomes possible.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view showing the structure of an automobile door trim manufactured by applying the method of the present invention, and FIG. 2 is a sectional view showing the structure of a terminal processing apparatus for carrying out the method of the present invention.
FIG. 4 is a sectional view showing each step of the method of the present invention.

First, the structure of an automobile door trim to which the method of the present invention is applied will be described with reference to FIG. 1. This automobile door trim 10 has a resin core material 11 formed into a required shape and a surface side of the resin core material 11. And a skin material 12 that is integrally attached to.

More specifically, the resin core material 11 is made of a composite resin material in which a filler such as talc is mixed with polypropylene resin in consideration of cost, moldability, strength and the like, and as the skin material 12. Is composed of a laminated sheet in which a foam layer such as polyethylene foam or polypropylene foam is laminated on the back side of a PVC sheet, and the resin core material 11 is mold press molded into a required shape in a mold for molding molding described later. As well as
The skin material 12 is the resin core material 11 during this mold press molding.
Is integrated with.

The peripheral end portion 12a of the skin material 12 is
The resin core material 11 is adhered and integrated well along the edge portion 11a of the resin core material 11 in a good appearance.

Next, the structure of the mold apparatus 20 which is a terminal processing apparatus used in the terminal processing method for the above-mentioned door trim 10 for automobiles, particularly the skin material 12, will be described.

The mold apparatus 20 used in the method of the present invention is installed on the lower mold press molding die 30, the upper mold press molding die 40, and the upper mold press molding die 40, and performs the end treatment of the skin material 12. The slide member 50 and the slide member 50 are included.

More specifically, the lower die 30 for mold press molding is provided with a material supply passage 31 for distributing and supplying the semi-molten resin material M which is the material of the resin core material 11. The material supply passage 31 is connected to an extrusion molding machine (not shown).

On the other hand, the upper mold press molding die 40 located above the lower mold press molding die 30 is configured to be movable up and down by a lifting cylinder or the like (not shown). In the most lowered state, the resin core material 11 having a desired thickness is molded and press-molded into a required shape by the clearance between the resin core material 11 and the lower mold-press molding die 30.

Then, the upper die 4 for press molding is used.
A bracket 51 is attached and fixed to the outer surface of 0, and a drive cylinder 52 such as an air cylinder is fixed to the lower surface of the bracket 51.

A slide member 50 is attached to the piston rod 53 of the drive cylinder 52,
In this embodiment, the slide member 50 is inclined at an angle of 20.degree.

A set pin 54 for temporarily setting the skin material 12 is attached to an appropriate position on the lower surface of the slide member 50, and a notch 55 is provided at the tip of the slide member 50. The shape of the end edge portion 11a of the resin core material 11 is formed by the notch 55.

The method of the present invention will be described using the mold apparatus 20 having the above structure.

First, as shown in FIG. 3, when the upper die 40 for mold press molding is at the upper position, the skin material 12 is pierced into the set pin 54 to set the skin material 12.

When the step of setting the skin material 12 is completed, the upper die 40 for mold press molding is lowered by the operation of the raising and lowering cylinder, and a predetermined position on the die surface of the lower die 30 for mold press molding is preliminarily set. The resin material M distributed and supplied to is molded and press-molded along the shape of the mold surface.

At this time, as shown in FIG. 4, the slide member 50 advances diagonally upward at an angle of 20 ° with respect to the horizontal plane by the operation of the driving cylinder 52, and is subjected to mold press molding through the skin material 12. It contacts the side wall of the lower mold 30.

In this state, the slide member 50
The notch 55 constitutes a part of the lower die 30 for mold press molding, forms the edge portion 11a of the resin core material 11, and the skin material along the edge portion 11a of the resin core material 11. Integrate 12

At this time, since the slide member 50 advances diagonally upward by 20 ° with respect to the horizontal plane, the skin material 12
Can be integrated with the end edge portion 11a of the resin core material 11 with tension, and the skin material 12 does not have tarmi or the like, and the corner portion does not meander or the like.

Further, since the slide member 50 is set to be inclined, the back side corner portion is set to the inside as compared with the front side corner portion of the product, and this back side corner portion is not conspicuous to the outside. When the skin material 12 is cut in the process, the appearance is not adversely affected even if rough cutting work is performed.

Thereafter, in the state shown in FIG.
After the molding of the resin core material 11 and the integration of the resin core material 11 and the skin material 12, the upper die 40 for mold press molding rises, and the slide member 50 also slides by the operation of the driving cylinder 52. 50 is back,
Return to original position.

Then, after the molded product on the lower mold press molding die 30 is released, the skin material 12 is cut to obtain the automobile door trim 10 shown in FIG.

As described above, according to the method of the present invention, the resin core material 1 is obtained by installing the slide member 50 on the upper and lower molds 30 and 40 for mold press molding for the end treatment of the skin material.
1 at the time of the mold press molding, the edge portion 11 of the resin core material 11
Since the skin material 12 is wound around a, and especially the slide member 50 is slid upwardly with respect to the plane, the end treatment of the skin material 12 is accurately performed. Compared with the terminal treatment method in which an adhesive is applied to the peripheral edge and then dried and folded back to the back surface of the core material, there is an advantage that the number of steps can be significantly reduced, resulting in a significant cost reduction.

Further, the upper and lower molds 3 for mold press molding
Since the slide member 50 having the drive cylinder 52 as a drive source is installed at 0 and 40, the number of steps can be greatly reduced by a simple configuration, and thus the value is extremely practical.

[0038]

As described above, according to the method for treating a skin material according to the present invention, a slide member is installed in a mold for press molding for molding automobile interior parts, and the slide member is moved at a predetermined angle. Since the interior parts after mold press molding are only required to cut the skin material by sliding with the slide operation, the end treatment of the skin material can be efficiently performed in an extremely short time, and it is a mass-produced automobile interior part. Since the number of steps can be drastically shortened, there is an effect that a significant cost reduction can be expected.

Further, since the mold device used in the method of the present invention has a simple structure in which the slide member is installed in the mold for mold press molding, the number of steps can be greatly shortened with a simple structure. Therefore, it can be said that it has extremely high practical value.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of an automobile door trim manufactured by the method of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a main part of a mold device that carries out the method of the present invention.

FIG. 3 is a cross-sectional view showing a set state of the skin material, showing one step of the method of the present invention.

FIG. 4 is a cross-sectional view showing one step of the method of the present invention and showing a mold engagement state of upper and lower molds for mold press molding.

FIG. 5 is a cross-sectional view showing a configuration of a conventional automobile door trim.

FIG. 6 is a sectional view showing a state in which a skin material is set in a conventional mold for press molding.

FIG. 7 is a cross-sectional view showing a mold press molding process of a conventional mold for press molding.

FIG. 8 is an explanatory view showing a conventional terminal treatment process of a skin material.

[Explanation of symbols]

 10 Automotive Door Trim 11 Resin Core Material 11a Edge 12 Skin Material 20 Mold Press Molding Device 30 Mold Press Molding Lower Mold 31 Material Supply Passage 40 Mold Press Molding Upper Mold 50 Sliding Member 55 Notch 52 Drive Cylinder M Resin material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B32B 3/04 7016-4F // B29L 9:00 4F 31:58 4F

Claims (3)

[Claims] 1. Upper and lower molds (30, 4) for mold press molding
After the skin material (12) is set in (0) and the semi-molten resin (M) which is the material of the resin core material (11) is distributed and supplied onto the lower mold for press molding (30), the mold press is performed. An automotive interior part integrally formed with a resin core material (11) and a skin material (12) by tightening engagement molding upper and lower molds (30, 40), wherein the mold press molding upper mold The peripheral edge portion of the skin material (12) is temporarily set on a slide member (50) that is installed on the lower surface of the peripheral edge of the (40) and is capable of inclining and moving upward toward the center side. (30,
When the slide member (50) is slid upward at the time of mold engagement of (40), the skin material (12) is wound around the edge portion (11a) of the resin core material (11). Method for end treatment of skin material in interior parts for automobiles. 2. A notch (55) is formed at the tip of the slide member (50), and the notch (55) is used to shape the edge portion (11a) of the resin core material (11). A terminal treatment device for a skin material in an automobile interior part according to claim 1. 3. A mold press molding lower mold (30) provided with a desired mold surface, and a semi-molten resin (M) which is a material of a resin core material (11) is distributed on the mold surface, and this mold press. An upper mold press molding die (40) which is engageable with the lower molding die mold (30) with a predetermined clearance, and an upper die for molding press molding, which is installed on the lower surface of the peripheral edge of the upper mold press molding die (40). A slide member (50) which is linked to the lifting and lowering operation of (40) and moves forward and backward toward the center side by the operation of the drive cylinder (52). Terminal processing unit.