KR-102961958-B1 - Manufacturing apparatus of interior for vehicle

Abstract

The present invention discloses a mold device for molding vehicle interior materials. The disclosed mold device for molding vehicle interior materials comprises an upper mold for molding an interior material and a stitch forming part for forming a stitch line, a lower mold that is joined with the upper mold, and a stitch forming contact part provided on the lower mold to selectively contact the stitch line forming portion of the interior material with the upper mold. Accordingly, the present invention allows the stitch line forming portion of the interior material to be closely attached to the upper mold after joining the upper mold and the lower mold, thereby enabling the accurate and precise formation of the stitch line of the skin interior material and improving product quality.

Inventors

• 성기문
• 원만재
• 박영민
• 이경호

Assignees

• 주식회사 몰텍스

Dates

Publication Date

20260508

Application Date

20230201

Claims (6)

1. Upper mold for molding interior materials; A lower mold having a stitch forming part for forming a stitch line and joined with the upper mold; and It includes a stitch forming contact portion provided in the lower mold above, and The above-mentioned stitch-formed contact portion comprises a deformable contact member joined along the longitudinal direction of the above-mentioned stitch-formed portion; and Including a tube deformation driving unit provided in the lower mold to be connected to the above deformation contact member, The above-deformed contact member directly forms the molding surface of the stitch molding portion, and is deformed after the upper mold and the lower mold are joined to adhere the stitch line molding portion of the interior material to the upper mold, A mold device for forming vehicle interior materials, characterized in that the above-described tube deformation drive unit supplies pneumatic pressure to the deformation contact member to selectively expand the deformation contact member.
2. delete
3. In Article 1, A tube assembly groove is formed in the stitch forming portion above, into which the deformation contact member is inserted and fixed; A mold device for molding vehicle interior materials, characterized in that the above-described deformation contact member is formed in a tube shape through synthetic resin so as to be deformable by the above-described tube deformation driving unit, and has an operating part coupling hole for connecting the above-described tube deformation driving unit.
4. In Article 1 or Article 3, The above tube deformation driving unit comprises: a tube connecting member fixed to the stitch forming part and connected to the deformation contact member; and A pneumatic line section formed in the lower mold to connect an external pneumatic supply section to the tube connecting member; A mold device for molding vehicle interior materials characterized by including
5. In Article 4, The above tube connecting member comprises a mold fixing body having a coupling groove formed therein to be fixed by being caught on the lower mold; A tube fixing protrusion formed with a tube catch groove and inserted into and fixed to the deformation contact member; and A communication hole formed through along the longitudinal direction of the above-mentioned mold fixing body and connected to the above-mentioned pneumatic line part; A mold device for molding vehicle interior materials characterized by including
6. In Article 1, A mold device for molding vehicle interior materials, characterized in that the above-described deformation contact member has a hollow elliptical or polygonal cross-sectional shape, both ends are sealed, and expands through the air supply of the above-described tube deformation driving unit.

Description

Manufacturing apparatus of interior for vehicle The present invention relates to a molding device for molding vehicle interior materials, wherein after combining an upper mold and a lower mold, the stitch line forming portion of the interior material can be closely attached to the upper mold, thereby enabling the stitch line of the skin interior material to be formed accurately and precisely, and thus improving product quality. Recently, to enhance the luxury of vehicles, skin interior materials are molded onto a plastic substrate to create a texture similar to leather or fabric. Skin interior materials are primarily used as surface finishes for instrument panels, glove boxes, consoles, lower covers, pillars, door interior panels, and airbag cover panels, and are manufactured using the In Mold Graining (IMG) method. In addition, the skin interior material is similar in texture to natural leather, and real stitch lines are formed in a sewn form to create a more natural and luxurious feel. The formation of such real stitch lines is achieved by folding the ends of two foam skins together to form a fold line between the seams, sewing the skins on both sides of the fold line together, and separately sewing a stitch line at a position slightly spaced from the fold line on one or both sides, thereby producing a luxurious and natural aesthetic and texture similar to that of real leather sewn and fixed. Also, when molding the skin interior material using an IMG mold, the molding is performed with the skin and core joined together, whereas in the case of a general mold, only the skin material is molded. However, the conventional mold device for forming interior materials described above faces a problem in that it cannot form stitch lines accurately and precisely due to the curvature of the main die used for forming the stitch lines. In other words, the conventional mold device for forming interior materials cannot form the stitch lines of the interior materials precisely and accurately using only the simple joining of the upper and lower dies. Therefore, there is a need to improve this. Meanwhile, Korean registered patent No. 10-2412887 (registration date: June 21, 2022) discloses "a triple injection mold assembly including a stitch product and a method for molding a high-sensitivity foamed plastic product using the same." FIG. 1 is a perspective view illustrating a mold device for molding vehicle interior materials according to one embodiment of the present invention. FIG. 2 is a perspective view for explaining a lower mold according to one embodiment of the present invention. FIG. 3 is a front view illustrating a lower mold according to one embodiment of the present invention. FIG. 4 is an enlarged perspective view of a key part to explain a slider pressing part according to one embodiment of the present invention. FIG. 5 is an exploded perspective view for explaining a slider pressing part according to one embodiment of the present invention. FIG. 6 is a perspective view illustrating a stitch forming part and a tube connecting member according to one embodiment of the present invention. FIG. 7 is an exploded perspective view for explaining a stitch forming part and a tube connecting member according to one embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating a deformable contact member and a tube connecting member according to one embodiment of the present invention. FIG. 9 is a cross-sectional view illustrating a stitch forming part and a deformation contact member according to one embodiment of the present invention. FIG. 10 is a cross-sectional view illustrating the operation of a deformation contact member according to one embodiment of the present invention. Hereinafter, a preferred embodiment of a mold device for molding vehicle interior materials according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined in consideration of their functions in the present invention, and these may vary depending on the intent or practice of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a perspective view for explaining a mold device for molding vehicle interior materials according to one embodiment of the present invention, FIG. 2 is a perspective view for explaining a lower mold according to one embodiment of the present invention, and FIG. 3 is a front view for explaining a lower mold according to one embodiment of the present invention. In addition, FIG. 4 is an enlarged perspective view of a key part for explaining a slider pressing part according to an embodiment of the present invention, FIG. 5 is an exploded perspective view for explaining a slider pressing part accord