JP2858716B2 - Terminal treatment method and device for skin material in interior parts for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

FIG. 5 shows a structure of an automobile door trim 1 as a typical automobile interior part. The door trim 1 is provided on a surface side of a resin core material 2 formed in a required shape with a skin material 3. The peripheral edge portion 3a of the skin material 3 is wound and adhered along the peripheral edge of the back surface of the resin core material 2, and the terminal processing 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 set pins 4a of an upper mold 4 for mold press molding, and a lower mold for mold press molding is formed. The resin material 6 in the semi-molten state, which is the material of the resin core material 2, is distributed and supplied onto the mold surface 5.

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

[0008] Thereafter, as shown in FIG. 8, after cutting the surplus skin material while leaving the wound portion of the skin material 3, the peripheral end portion 3 a of the skin material 3 is moved along the back surface side of the resin core material 2. Then, the terminal processing step of the skin material 3 is completed.

[0007]

As described above, in the conventional construction method in which the resin core material 2 and the skin material 3 are integrated by mold press molding, the terminal treatment of the skin material 3 is performed by resin molding by mold press molding. After the material 2 and the skin material 3 are integrated, a cutting step of the skin material 3 for cutting the skin material 3 along the trim shape leaving the winding part 3a of the skin material 3, and a peripheral edge portion of the skin material 3 It is necessary to provide a winding step of winding and affixing 3a on the back surface side of the resin core material 2, and it is pointed out that the number of steps is large, which leads to a significant increase in cost.

In particular, 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 such circumstances, and an object of the present invention is to provide an automobile interior part obtained by integrally molding a resin core material and a skin material by mold press molding. It is another object of the present invention to provide a method and an apparatus for terminally treating a skin material capable of easily and reliably performing the terminal treatment of the skin material.

[0010]

Means for Solving the Problems To achieve the above object, a method for treating a skin material in an automobile interior part according to the present invention comprises the steps of: setting a skin material in an upper and lower mold for mold press molding; After distributing and supplying the molten resin , which is the material of the resin core material, to the lower mold for mold press molding, the upper and lower molds for mold press molding are engaged and pressed to form the resin core material and the skin material integrally. Of the skin material
In the terminal processing method of the skin material which definitive interior automotive parts for processing winding the terminal to the peripheral rear surface of the resin core member, said installed on lower surface of the peripheral edge portion of the mold press forming the upper mold, inclined upward toward the center side A peripheral end portion of the skin material is temporarily set on the slide member that can move forward and backward, and when the upper and lower molds for mold press molding are engaged, the slide member is slid obliquely upward to move the edge portion of the resin core material. It is characterized in that a skin material is rolled into the skin.

Further, an apparatus used in the terminal processing method includes:
With the desired mold surface, which is a material of the resin core member on the mold surface melted
A lower mold for mold press molding that distributes and supplies the resin , an upper mold for mold press molding capable of engaging with the lower mold for mold press molding while maintaining a predetermined clearance, and a lower mold which is installed on a lower surface of a peripheral portion of the upper mold for mold press molding. In conjunction with the raising / lowering operation of the upper mold for mold press molding, the operation of the drive cylinder moves forward and backward diagonally upward toward the center side ,
And a slide member having a set pin for temporarily fixing the peripheral portion of the skin material .

[0012]

As is apparent from the above configuration, when the upper and lower dies for mold press molding are engaged with each other, the slide member installed on the peripheral edge of the upper mold for mold press molding advances diagonally upward toward the center side and the mold press is formed. The skin material and the resin core material are firmly integrated along the edge of the product by the molding upper die and the slide member.

Since the sliding member slides obliquely upward, the skin material can be integrated with the edge of the core material while applying tension to the skin material.

Further, the terminal processing device moves the upper die for mold press molding at an angle by a driving cylinder, and moves forward and backward , and temporarily sets the peripheral portion of the skin material.
This is a simple configuration in which a slide member provided with a set pin is installed, and therefore, a reliable and accurate terminal treatment of the skin material can be performed.

[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, FIG. 2 is a sectional view showing the structure of a terminal processing apparatus for implementing the method of the present invention, and FIGS.
FIG. 4 is a sectional view showing each step of the method of the present invention.

First, the structure of a door trim for an automobile to which the method of the present invention is applied will be described with reference to FIG. 1. The door trim for an automobile 10 comprises 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 the cover.

More specifically, the resin core material 11 is made of a composite resin material in which a filler such as talc is mixed into a polypropylene resin in consideration of cost, moldability, strength, and the like. 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 molded into a required shape in a mold press molding die described later. As well as
At the time of this mold press molding, the skin material 12 is used as the resin core material 11.
And integrated.

The peripheral end portion 12a of the skin material 12 is
Along the edge 11a of the resin core material 11, the resin core material 11 is adhered and integrated in a good shape.

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

The mold apparatus 20 used in the method of the present invention is installed on the lower mold 30 for mold press molding, the upper mold 40 for mold press molding, and the upper mold 40 for mold press molding, and performs terminal treatment of the skin material 12. It is substantially constituted by the slide member 50.

More specifically, the lower mold 30 for mold press molding is provided with a material supply passage 31 for distributing and supplying a molten resin material M serving as a material of the resin core material 11. The material supply passage 31 is connected to an extruder (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 able to move up and down by an elevating cylinder or the like (not shown). In the most lowered state, the resin core material 11 having a desired thickness is subjected to mold press molding into a required shape by a clearance between the lower mold 30 for mold press molding.

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

A slide member 50 is attached to a piston rod 53 of the driving cylinder 52.
In this embodiment, the slide member 50 performs an advancing / retreating operation by inclining obliquely upward at an angle of 20 °.

A set pin 54 for temporarily fixing 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 cutout 55 forms the shape at the edge 11 a of the resin core 11.

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

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 pins 54 to set the skin material 12.

When the step of setting the skin material 12 is completed, the upper and lower mold press molds 40 are lowered by the operation of the elevating and lowering cylinders. Press molding is performed on the resin material M distributed and supplied along the shape of the mold surface.

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

In this state, the slide member 50
Cutout 55 constitutes a part of the lower mold 30 for mold press molding, and forms the edge 11a of the resin core material 11 and the skin material along the edge 11a of the resin core material 11. 12 are integrated.

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

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

Thereafter, cooling is performed for a predetermined time 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 mold 40 for mold press molding is raised, and the slide member 50 is similarly moved by the operation of the driving cylinder 52. 50 retreats,
Return to the original position.

Then, after the molded product on the lower mold 30 for mold press molding is released, if the work of cutting the skin material 12 is performed, the automobile door trim 10 shown in FIG. 1 is obtained.

As described above, according to the method of the present invention, the resin core material 1 is provided by installing the slide member 50 on the upper and lower molds 30 and 40 for mold press molding for terminal treatment of the skin material.
1 at the time of mold press molding, the edge 11 of the resin core material 11
rolling the skin material 12 in a, in particular the slide member 50 water
By sliding operation obliquely upward flat surface as a reference, and this because the terminal treatment of the skin material 12 is that precisely performed, dried after an adhesive is applied to the peripheral terminal of the conventional way skin material Compared with the terminal processing method of folding back to the back surface of the core material, there is an advantage that the number of steps can be greatly reduced and a significant cost reduction is caused.

Further, upper and lower molds 3 for mold press molding are used.
Since the number of steps can be greatly reduced with a simple configuration in which the slide member 50 using the driving cylinder 52 as a driving source is provided at 0 and 40, the practical value is extremely high.

[0038]

As described above, according to the method of treating a skin material according to the present invention, a slurry having a function of temporarily fixing a skin material to a mold press molding die for molding an interior part for an automobile is provided. By installing the guide member and sliding the slide member at a predetermined angle, the interior parts after mold press molding only need to cut the skin material, so the terminal treatment of the skin material can be performed in a very short time. This can be performed well, and the number of steps can be significantly reduced in interior parts for automobiles, which are mass-produced products, so that there is an effect that a significant cost reduction can be expected.

Further, the mold apparatus used in the method of the present invention is provided with a temporary fixing function of the skin material in the mold for mold press molding.
Since it has a simple configuration in which the provided slide member is installed, the number of steps can be significantly reduced with a simple configuration, and therefore, it can be said that the practical value is extremely high.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view showing a configuration of a main part of a mold apparatus for performing the method of the present invention.

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

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

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

FIG. 6 is a cross-sectional view showing a state in which a skin material is set on a conventional mold press molding die.

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

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

[Explanation of symbols]

 Reference Signs List 10 Door trim for automobile 11 Resin core material 11a Edge 12 Skin material 20 Mold press molding die apparatus 30 Mold press molding lower mold 31 Material supply passage 40 Mold press molding upper mold 50 Slide member 55 Notch 52 Driving Cylinder M resin material

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification symbol FI // B29L 31:58 (58) Investigated field (Int.Cl. ⁶ , DB name) B29C 43/18-43 / 20,43 / 34-43/4 2,33 / 12,33 / 76

Claims (3)

(57) [Claims] An upper and lower mold (30, 4) for mold press molding.
0), set the skin material (12) and
Of the resin core material (11) on the lower mold (30)
MaterialMolten resinAfter distributing (M), mold
Engage and press the upper and lower dies (30, 40) for press molding.
Thereby, the resin core material (11) and the skin material (12) are integrated.
MoldingThe terminal of the skin material (12) is connected to the resin core material (1).
Wrap around the back side of 1)For automotive interior partsYou
In the terminal treatment method of the skin material,  On the lower surface of the periphery of the upper mold (40) for mold press molding
It is installed and can be moved up and down by inclining upward toward the center side.
The peripheral end of the skin material (12) is temporarily attached to the ride member (50).
Stop set, upper and lower mold for mold press molding (30,
When the mold is engaged in 40), the slide member (50) is tilted upward.
And slide it toward the edge of the resin core material (11).
(11a) in which a skin material (12) is involved.
Terminal treatment method for skin material in automotive interior parts. 2. A mold having a desired mold surface, and a resin core material on the mold surface.
A module that distributes and supplies the molten resin (M) as the material of (11)
Mold press lower mold (30) and this mold press
Engage with the lower mold (30)
Upper mold for mold press molding (40)
It is installed on the lower surface of the peripheral part of the upper mold for
Drive in conjunction with the vertical movement of the upper mold (40)
Slant toward the center by the operation of the moving cylinder (52)
It moves up and down, and the periphery of the skin material (12).
With a set pin (54) for temporarily fixing
And a vehicle member (50).
Terminal treatment device for skin material in exterior parts. 3. A notch is formed at the tip of the slide member (50).
(55) is set, and the notch (55)
The shaping of the edge (11a) of the fatty core material (11) is performed.
3. The vehicle interior part according to claim 2,
Terminal equipment for skin material.