Apparatus and method for manufacturing multilayer felt

Patent metadata

Field	Value
Publication number	US-10119226-B2
Application number	US-201414505784-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Jan 21, 2014
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

An apparatus and a method for manufacturing multilayer felt to improve NVH (noise, vibration, and harshness) of a vehicle may include supplying first chip felt between an upper mold and a lower mold, and simultaneously, firstly adsorbing the first chip felt on a bottom surface of the upper mold by vacuum pressure applied to vacuum suction gates of the upper mold, supplying second chip felt between the upper mold and the lower mold, and simultaneously, secondly adsorbing the second chip felt on a surface of the first chip felt by vacuum pressure applied to the vacuum suction gates of the upper mold, to stack the second chip felt on the first chip felt, pressing the first chip felt and the second chip felt, which are stacked on each other, using a press molding operation of the upper mold and the lower mold, and forming a multilayer felt product.

First claim

What is claimed is:

1. An apparatus for manufacturing multilayer felt, comprising:
an upper mold and a lower mold of a press mold which are disposed in a hermetic molding box in an up and down direction, and press chip felt to form a felt product having a desired shape;
a vacuum source which provides vacuum to a plurality of vacuum suction gates formed in the upper mold;
a chip felt supply line which supplies the chip felt between the upper mold and the lower mold; and
a blower fan which is connected to a rear end portion of the chip felt supply line and supplies the chip felt toward the molds,
wherein a first chip felt supply gate for supplying first chip felt and a second chip felt supply gate for supplying second chip felt are in parallel connected to a front end portion of the chip felt supply line,
wherein the first chip felt is supplied from the first chip felt supply gate to between the upper mold and the lower mold, and firstly adsorbed by vacuum pressure to the vacuum suction gates of the upper mold,
wherein the second chip felt is supplied from the second chip felt supply gate, and secondly adsorbed by vacuum pressure on a surface of the first chip felt to be stacked on the first chip felt,
wherein a vacuum suction shut-off device, which closes desired vacuum suction gates among the plurality of vacuum suction gates, is mounted above the upper mold, and
wherein the vacuum suction shut-off device includes:
a shut-off plate which has a structure having a rack formed on an upper surface thereof, and shuts off the desired vacuum suction gates among the plurality of vacuum suction gates;
a pinion which is engaged with the rack of the shut-off plate; and
a motor which is coaxially connected with the pinion, and provides rotational power to the pinion to selectively moves the shut-off plate above the plurality of vacuum suction gates.

2. The apparatus of claim 1 , wherein solenoid valves are mounted in outlets of the first chip felt supply gate and the second chip felt supply gate, respectively, in order to adjust discharge timing of the first chip felt and the second chip felt.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Moon Tae Oh
• Jung Dae Ik

Classifications

• D21H27/38 Primary

  at least one of the sheets having a fibrous composition differing from that of other sheets · CPC title

• B32B5/022 Primary

  Non-woven fabric · CPC title

• B32B2262/0276

  Polyester fibres · CPC title

• B32B2250/20

  All layers being fibrous or filamentary · CPC title

• B32B2605/00

  Vehicles · CPC title