US-12623446-B2 - Membrane device for manufacturing crash pad for vehicle including real wood sheet and method of manufacturing crash pad for vehicle including real wood sheet using membrane device

US12623446B2US 12623446 B2US12623446 B2US 12623446B2US-12623446-B2

Abstract

A membrane device for manufacturing a crash pad for a vehicle including a real wood sheet includes a vacuum device main body having a plurality of vacuum holes such that a real wood sheet to be temporarily attached to a core is mounted in the vacuum device main body, a cover having a silicone film to define a vacuum space together with the vacuum device main body, a vacuum module to suck air in the vacuum device main body through the vacuum holes, and a control unit to compress the real wood sheet and the core, which are temporarily attached and mounted on the vacuum device main body, for a preset time by sucking air in the vacuum space through the vacuum holes in a state in which the vacuum device main body is covered by the cover.

Inventors

Ik Keun Choi
Min Kyeong LEE
Hyun Ho Lee
Ji Seung Hong
Jong Jin Lee

Assignees

HYUNDAI MOBIS CO., LTD.
SEOYON AUTOVISION CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220615
Priority Date: 20210804

Claims (5)

1 . A membrane device for manufacturing a crash pad for a vehicle including a real wood sheet, the membrane device comprising: a vacuum device main body having a plurality of vacuum holes and configured such that the real wood sheet to be temporarily attached to a core is mounted in the vacuum device main body, the vacuum device main body comprising a plurality of wood seating pins that are movable upward or downward to seat the real wood sheet; a cover configured to be in an open state, in which the cover is open to expose the vacuum device main body, and a closed state, in which the cover is closed on the vacuum device main body, to define a vacuum space together with the vacuum device main body in the closed state, the cover including a silicone film disposed along an inside surface thereof; a vacuum module configured to suck air in the vacuum device main body through the vacuum holes; and a control unit configured to compress the real wood sheet and the core with the silicone film, which are temporarily attached and mounted on the vacuum device main body, for a preset time by sucking air in the vacuum space through the vacuum holes in a state in which the vacuum device main body is covered by the cover in the closed state, the control unit being configured to remove the vacuum from the vacuum space by controlling the vacuum module so that the compressed real wood sheet is detached from the vacuum device main body.
2 . The membrane device of claim 1 , further comprising: a heater disposed above the silicone film in the closed state and configured to heat an interior of the vacuum space, wherein the control unit is configured to heat the real wood sheet for a preset heating time before compressing the core and the real wood sheet by operating the vacuum module.
3 . The membrane device of claim 1 , wherein the vacuum device main body comprises a fixing jig on which the core is mounted, the core is seated on the fixing jig, and the real wood sheet is seated on the wood seating pins.
4 . The membrane device of claim 1 , further comprising: a vibration module configured to correct a position of the real wood sheet by applying vibration to the core disposed below the real wood sheet.
5 . A crash pad for a vehicle, the crash pad comprising a real wood sheet manufactured by a membrane device for a vehicle according to claim 1 .

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit under 35 USC § 119(a) of Korean Patent Application No. 10-2021-0102382, filed on Aug. 4, 2021 in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. BACKGROUND 1. Technical Field The present disclosure relates to real wood skin used for automatic wrapping, and a process and apparatus for manufacturing the same. 2. Related Art Real wood skin applied to a vehicle in the related art is made by preforming a real wood sheet on deco-veneer wood and then performing insert-injection molding (back injection). Thereafter, trimming is performed on an end of the injection-molded real wood sheet, and then curling and coating are sequentially performed on the real wood sheet, thereby manufacturing the real wood skin. The real wood skin product in the related art, which is made by applying the back insert-injection molding process, may provide real wood having a visually and tactilely excellent surface. However, because the real wood having high hardness is attached to the injection-molded part, the real wood provides cheeping feeling to a customer when the customer pushes the real wood. Of course, some customers may think that it is natural for the real wood to have high hardness. However, a customer, who needs soft interior materials, cannot be satisfied with the real wood. SUMMARY This Summary is provided to introduce a selection of concepts in simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. The present disclosure has been made in an effort to solve the problems in the related art, and an object of the present disclosure is to provide a membrane device for manufacturing a crash pad for a vehicle including a real wood sheet, which is capable of visually providing a real wood feeling, and providing flexibility. Another object of the present disclosure is to provide a membrane device for manufacturing a crash pad for a vehicle including a real wood sheet, which is capable of simultaneously performing real wood forming and core attachment using a membrane method without performing a preforming process on wood. The objects of the present disclosure are not limited to the aforementioned objects, and other objects, which are not mentioned above, may be clearly understood from the following descriptions. In one general aspect, a membrane device for manufacturing a crash pad for a vehicle including a real wood sheet includes: a vacuum device main body having a plurality of vacuum holes and configured such that the real wood sheet to be temporarily attached to a core is mounted in the vacuum device main body; a cover having a silicone film and configured to define a vacuum space together with the vacuum device main body; a vacuum module configured to suck air in the vacuum device main body through the vacuum holes; and a control unit configured to compress the real wood sheet and the core, which are temporarily attached and mounted on the vacuum device main body, for a preset time by sucking air in the vacuum space through the vacuum holes in a state in which the vacuum device main body is covered by the cover, the control unit being configured to remove the vacuum from the vacuum space by controlling the vacuum module so that the compressed real wood sheet is detached from the vacuum device main body. The membrane device may include a heater configured to heat an interior of the vacuum space, and the control unit may be configured to heat the real wood sheet for a preset time before compressing the core and the real wood sheet by operating the vacuum module. The vacuum device main body may have a plurality of wood seating pins that is movable upward or downward to seat the real wood sheet. The vacuum device main body may have a fixing jig on which the core is mounted, the core may be seated on the fixing jig, and the real wood sheet may be seated on the wood seating pins. The membrane device may include a vibration module configured to correct a position of the real wood sheet by applying vibration to the core disposed below the real wood sheet. In another general aspect, a method of manufacturing a crash pad for a vehicle including a real wood sheet using a membrane device includes: moving a plurality of wood seating pins upward in a vacuum device main body in a state in which a cover is opened from the vacuum device main body; positioning a core on a fixing jig disposed inside the wood seating pin, mounting a real wood sheet on upper portions of the wood seating pins, and closing and covering the vacuum device main body with the cover; compressing, by a control unit, a silicone film disposed on the cover against the real wood sheet while implementing