JPH0396325A - Molding method for internal material - Google Patents

Abstract

PURPOSE:To mold an internal trim material which is superior extremely in economy and has improved strength of an end of an internal trim base, by a method wherein resin felt is inserted into a press molding tool constituted of a bottom force in a recessed state and a top force in a projected state downward, the bottom and top forces are clamped, the inner trim base which is comprised of resin felt and in a desired form is molded and a skin material is joined to the inner trim material. CONSTITUTION:A recessed part 33 of a top force 23 is lowered along a side wall part 26 of a bottom force main body 25 and an inner trim material 42 in a desired form is obtained with a lower molding surface 31 of a core 27 and an upper molding surface 32 of the top force 23. After molding of the inner trim base 42, mold break is performed by moving the top force 23 upward, then the core 27 is raised by actuating a driving source 29 and the inner trim material 42 is raised so that the top of an end 42a of an outer fringe of the inner trim base 42 comes to the vicinity of the top of a side wall part 26 of the bottom force main body 25. Then a skin material 46 is arranged on the surface of the inner trim base 42. A hot-melt sheet or an adhesive agent is applied to a space between the skin material 46 and inner trim base 42 and the skin material 46 is joined to the inner trim base 42 by lowering the top force 23. With this construction, the inner trim material 41 such as a molded ceiling or a door trim is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for molding interior materials, and more specifically, a press molding mold comprising a concave lower mold and a downwardly convex upper mold. The present invention relates to a method for molding an interior material, in which a resin felt is inserted into a mold, a lower mold and an upper mold are clamped, an interior base material of a desired shape made of resin felt is molded, and a skin material is then bonded to the interior material.

[Conventional technology]

BACKGROUND ART Conventionally, molded ceilings, door trims, trunk trims, etc. have existed as interior materials for vehicles, etc., and it is known that resin felt is used as the interior base material of these interior materials. As shown in FIG. 6, the resin felt 5 for forming the interior base material 2 is inserted into a press mold 12 consisting of a lower mold 13 and an upper mold 14, and heated and press-molded into a desired shape. The mold is opened, and as shown in FIG. 7, the skin material 3 is laminated on the surface of the molded interior base material 2 via an adhesive or the like, and the skin material 3 is laminated with an upper mold 14 as shown in FIG.
is joined to the interior base material 2, and then the end 1a is treated to form the interior material 1.

[Problem to be solved by the invention]

However, when the interior material 1 is molded using the conventional press mold 12, the end 1a of the interior material 1 is held between the mold matching parts 16 and 17 formed in the lower mold 13 and the upper mold 14. This requires end treatment such as canting the end 2a of the interior base material 2 after forming the interior material 1, which makes the work complicated, and scraps are generated due to the cutting of the end 2a, and these scraps are heated. Since it is in a pressed state, it is difficult to reuse it, and it is extremely uneconomical.

In addition, in the conventional interior material 1, since the interior material 2 made of resin felt 5 with a uniform thickness is used, the interior material 2 having approximately uniform strength can be obtained, but the ends 2a of the interior material 2 are The terminal 2a of the interior base material 2 after molding is particularly easy to damage.
It is desired to improve the strength of

It is an object of the present invention to eliminate the need for end treatment such as canting the ends of the interior base material after molding the interior material, and therefore eliminate the generation of scraps, which is extremely economical, and provides strength at the ends of the interior base material. The purpose of the present invention is to provide a method for molding an interior material that can improve the quality and appearance of the interior material.

[Means to solve the problem]

The present invention was made in view of the above problems, and involves inserting resin felt into a press molding die consisting of a concave lower die and a downwardly convex upper die, and clamping the lower die and the upper die. death,
Molding an interior base material of desired shape made of resin felt,
Next, in the method for molding an interior material in which a skin material is bonded to an interior base material, the lower mold has a lower mold body having a side wall portion, and a core mold that moves up and down along the side wall portion of the lower mold body. , the upper surface of the core mold is formed with a lower molding surface corresponding to the size of the interior base material to be molded, and the upper mold has an upper molding surface having a shape corresponding to the lower molding surface of the lower mold protruding downward. When the core mold is lowered to the lower part of the lower mold body, a resin felt formed larger than the lower molding surface of the core mold is placed on the lower molding surface, and the resin felt is formed larger. The outer peripheral edge of the resin felt is placed against the side wall of the lower mold body, and then the upper molding surface of the upper mold presses the outer peripheral edge of the resin felt against the resin felt body that is in contact with the lower molding surface of the core mold. , molding an interior base material with high terminal density, then opening the upper mold, raising the core mold, and raising the upper end of the outer periphery of the interior base material to near the upper end of the side wall of the lower mold body. , and then the skin material is bonded to the surface of the interior base material. [Operation] According to the present invention, the outer peripheral edge portion of the resin felt, which is formed larger than the lower molding surface of the core mold, leans against the side wall of the lower mold body, and the outer peripheral edge portion of the resin felt, which is formed larger than the lower molding surface, leans against the side wall portion of the lower mold body. The part is pressed with the convex upper molding surface of the upper mold. Accordingly, the interior base material is shaped with the outer peripheral edge portion of the resin felt being folded back to the main body of the resin felt that is in contact with the lower molding surface of the core mold, and the end of the interior base material is shaped to have a high density. Then, after opening the upper mold, the core mold can be raised along the side wall of the lower mold body to raise the upper end of the outer periphery of the interior base material to near the upper end of the side wall. If the skin material is bonded to the interior base material in this state, the end of the skin material will not be bent by the side wall of the lower mold body during molding, and the end treatment of the interior base material may be done after molding the interior material. There is no need to do this.

〔Example〕

The method for molding an interior material according to the present invention will be described in detail below with reference to the drawings.

1 to 5 schematically show an embodiment of the method of the present invention, and a press mold 21 used for carrying out the method of the present invention includes a concave lower mold 22 and a lower mold 22. This press mold 21 is formed into a hot press mold.

The lower mold 22 has a concave lower mold main body 25 and a core mold 27 that is disposed so as to be vertically movable along a side wall 26 of the lower mold main body 25. A rod 28 is guided below the lower mold body 25 through a through hole 25b formed in the bottom wall 25a of the lower mold body 25 at the lower part of the core mold 27.
The lower part of the mold 8 is connected to a drive source 29 such as a hydraulic cylinder so that the core mold 27 can be moved up and down.

The upper surface of the core mold 27 is formed into a lower molding surface 31 corresponding to the size of the interior base material 42 to be molded. The lower molding surface 31 is shaped to a size corresponding to the size of the base material 42.

The upper mold 23 has an upper molding surface 32 having a shape corresponding to the lower molding surface 31 of the core mold 27, and the upper oval shaped surface 32 fits inside the side wall 26 of the lower mold body 25 so as to be vertically movable. It is formed at the lower end of the convex portion 33 that protrudes downward so as to fit together. The height of this convex portion 33 is approximately 50 mm, and the distance between the outside of the convex portion 33 and the side wall portion 26 of the lower mold body 25 is approximately 0.2 to 0.
．． It is set to 5u.

In a state where the lower mold 22 and the upper mold 23 are opened, and
The core mold 27 is lowered to the lower part of the lower mold body 25, and in a state where it is in contact with the bottom wall 25a, the lower molding surface 3 of the core mold 27 is
Resin felt 44 is placed on 1.

The resin felt 44 is formed into a flat rectangular shape with a thickness of 30 to 40 m, and this resin felt 44 is attached to the core mold 2.
The outer circumferential edge portion 44a of the resin felt 44 is formed larger than the lower molding surface 31 of No. 7.
As shown in the figure, the lower mold main body 25 is placed in a state where it is leaning against the side wall portion 26. In addition, the outer peripheral edge portion 4 of the resin felt 44
It is also possible to use a part of 4a having the same size as the lower molding surface 31.

Next, as shown in FIG. 2, the recess 33 of the upper mold 23 is lowered along the side wall 26 of the lower mold body 25, and the lower molding surface 31 of the core mold 27 and the upper molding surface 32 of the upper mold 23 form a desired shape. A shaped interior base material 42 is obtained.

When the upper molding surface 32 of the upper mold 23 descends, the lower mold body 25
The outer peripheral edge portion 44a of the resin felt 44 leaning against the side wall portion 26 of the core mold 27 is folded back toward the main body 44b of the resin felt 44 that contacts the lower molding surface 31 of the core mold 27, and the temperature is 220 to 230°C. The interior base material 42 is molded under hot press conditions of 60 seconds. This interior base material 4
2 is shaped to have a thickness of 2 to 3R.

Therefore, the end 42a of the molded interior base material 42 has a high density because the outer peripheral edge portion 44a of the resin felt 44 is folded back and integrated. 1.0-1. 5 kg
/ rrr, whereas the terminal 42a has 2.0 to 3.
．． It is formed at 0kg/rrf.

Note that when placing the resin felt 44 on the lower molding surface 31 of the core mold 27, a slot is provided in a part of the outer peripheral edge portion 44a of the resin felt 44, so that the outer peripheral edge portion 44a of the resin felt 44 is placed on the lower molding surface 31 of the core mold 27. The resin felt 4 can be easily folded back toward the central main body 44b side.
It is also possible to temporarily fix the main body 44b side of No. 4 using double-sided tape so as not to shift from the lower molding surface 3l.

As shown in FIG. 3, after molding the interior base material 42, the upper mold 23
is moved upward to open the mold, and then the driving source 29 is activated to raise the core mold 27, so that the upper end of the terminal 42a, which is the outer peripheral edge of the interior base material 42, is connected to the side wall portion 26 of the lower mold body 25.
The interior base material 42 is raised to near the upper end of the interior base material 42.

Next, as shown in FIGS. 4 and 5, a skin material 46 is provided on the surface of the interior base material 42. A hot melt sheet or adhesive is applied between the skin material 46 and the interior base material 42, and the upper die 23 is lowered to transfer the skin material 46 onto the interior base material 42.
be joined to. The hot press conditions for joining this skin material 46 are 120 to 130° C. and 30 seconds. The interior material 41 is molded by joining the skin material 46, and the interior material 4l is taken out from the press mold 21, and the end 46a of the skin material 46 is rolled into the back side of the interior base material 42 to form interior materials such as molded ceilings and door trims. 41 can be obtained, and this skin material 4
Only the end treatment of step 6 is required, and there is no need to perform end treatment of the interior base material 42. [Effects of the Invention] The above is an embodiment of the method for molding an interior material according to the present invention. Place the felt on the lower molding surface with the core mold lowered, lean the large outer peripheral edge of the resin felt against the side wall of the lower mold body, and then place the resin felt on the upper molding surface of the upper mold. The outer periphery of the felt is pressed against the lower molding surface of the core mold, and the large outer periphery of the resin felt is folded back toward the main body of the resin felt for hot press molding. The density is high and the strength of the terminal increases.Then, the core mold is raised to raise the upper end of the outer periphery of the interior base material to near the upper end of the side wall of the lower mold body, and in this state, the skin material is attached to the interior base material. It can be bonded to the surface of the material, the ends of the skin material will not be bent and shaped, and there is no need to treat the ends of the interior base material after molding, and no scraps will be generated, making it extremely economical. It is possible to obtain a method for molding an interior material that is excellent and has an excellent appearance.

[Brief explanation of drawings]

1 to 5 show an embodiment of the interior material molding method according to the present invention. is a sectional view of the interior base material molded, FIG. 3 is a sectional view of the core mold raised, FIGS. 4 and 5 are sectional views of the skin material being joined, and FIGS. FIG. 8 is a cross-sectional view of a mold showing a conventional method for molding an interior interior base material. In the figure, 21...Brace mold, 22...Lower mold, 23
... upper mold, 25 ... lower mold body, 26 ... side wall part,
27... Core mold, 3l... Lower molding surface, 32...
Upper molding surface, 33... Convex portion, 41... Interior material, 42
...Interior base material, 42a...Terminal, 42b...Main body, 44...Resin felt, 44a...Outer peripheral portion, 44b...Main body, 4G...Skin material, 46b...・
Terminal.

Claims (1)

[Claims] (1) Resin felt is inserted into a press mold consisting of a concave lower mold and a downwardly convex upper mold, the lower mold and upper mold are clamped, and the desired shape of the interior base made of resin felt is formed. In the method for molding interior materials in which a material is molded and then a skin material is bonded to the interior base material, the lower mold includes a lower mold body having a side wall portion, and a core that moves up and down along the side wall portion of the lower mold body. The upper surface of the core mold is formed into a lower molding surface corresponding to the size of the interior base material to be molded, and the upper mold has an upper molding surface having a shape corresponding to the lower molding surface of the lower mold. A resin felt formed with a surface protruding downward and larger than the lower molding surface of the core mold is placed on the lower molding surface while the core mold is lowered to the lower part of the lower mold body. , a resin felt in which the large outer peripheral edge portion of the resin felt rests against the side wall of the lower mold body, and then the outer peripheral edge portion of the resin felt is brought into contact with the lower molding surface of the core mold on the upper molding surface of the upper mold. The upper mold is then opened and the core mold is raised, and the upper end of the outer periphery of the interior base material is pressed against the side wall of the lower mold body. A method for molding an interior base material, which comprises raising the material to near the upper end, and then bonding the skin material to the surface of the interior base material.