JPH03269150A - Apparatus for producing fiber mat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for producing fiber mats, particularly fiber mats used as interior materials for automobiles.

(Conventional technology) Conventionally, fiber mats used for automobile interior materials, etc.
Manufactured by one-way card cross layer method, air lay method, etc.

FIG. 3 schematically shows the manufacturing process of a fiber mat using a cross-layer method. The fiber material 11 for forming the m-fiber mat is usually a roving-like or cotton-like block, and the fiber material 11 is passed through the conveyor 1.
2 and introduced into the cutter 13 and cut to a certain length, usually about 25 to 100 nv. The cut fiber material 11 is sent to a cotton blending machine 15, where various fiber materials are mixed. The blended fiber material is then passed through a duct 17 by a transfer machine 16 to a stocker 1.
8. The fiber material in the stocker 18 is continuously fed onto the conveyor 19 and sent to the up lattice conveyor 21, where it is remixed in the process. The fiber material 11 moving up the up lattice conveyor 21 is adjusted to an appropriate amount by a scraper 22 and supplied to a measuring device 24 .

A predetermined amount of the fiber material 11 collected in the measuring device 24 is dropped onto a lattice conveyor 25 and supplied to a fibrillator 26. The defibrating machine 26 has cylindrical blade wheels of a cylinder 27, a walker 28, and a stripper 29, and the strand material 11 is passed between them and defibrated. The fiber material coming out of the defibrator 26 is formed into a web-like fiber layer 31, which is then dropped onto the lattice conveyor 32 by a cross layer 33 that reciprocates in the width direction above the lattice conveyor 32, and the laminated fibers 1 are folded in a zigzag shape. becomes. This laminated fiber 1 is pressed to a thickness of about 150 mm on lattice conveyors 32 and 2, and needle bunched in a needle locker 37. As a result, the fibers of each layer are intertwined with each other, and the
A fiber mat 30 having a certain thickness is formed. The fiber mat 30 is cut off by a cutter 38, and the rotary cutter 3
It is cut by 9.

On the other hand, the air-lay method for producing fiber mats uses an air flow instead of cross-layering in the m-fiber lamination process, and suction deposits defibrated fibers on the surface of a cage roller to form laminated fibers. The process is almost the same as that of the above-mentioned card cross layer one type.

Fiber mats manufactured by either method are used, for example, in automobile trunk lining materials, ceiling materials made by impregnating and curing resin, and the like.

(Problems to be Solved by the Invention) For fiber mats used in automobiles, there is a demand for fiber mats that are made thicker only in specific portions such as fixing portions and component attachment portions, thereby increasing the strength of the portions. In particular, fiber mats manufactured with a large basis weight on both sides are often requested.

However, in the above-mentioned conventional fiber mat manufacturing apparatus,
Weighing and defibration are performed using a measuring device 24 having a width corresponding to the width of the fiber material 11 continuously conveyed by the conveyor 21 and a defibrator 26 having the same width. It is not possible to adjust the distribution in the width direction, and the lamination must be uniform throughout, so for example, fiber mats with different basis weights in the width direction may be made thicker on both sides. It is not possible to manufacture mats with increased strength.

In addition, manufacturing a fiber mat with a large overall basis weight for the parts that require strength on both sides means that more fiber material is used than necessary, making the fiber mat expensive. Moreover, the weight increases, making handling difficult.

The present invention has been made for the purpose of solving the above problems, and the problem to be solved is to provide a fiber mat manufacturing apparatus that manufactures a fiber mat having a large basis weight on both sides. be.

(Means for Solving the Problems) To solve the above problems, the fiber mat manufacturing apparatus of the present invention includes a center pressing roller that presses from above the central part of the laminated fibers that are continuously conveyed by a conveyor; Equipped with a basis weight changing mechanism consisting of a width adjustment plate that guides and compresses both sides of the laminated fiber from the side toward the center, and a side pressing roller that presses both sides of the laminated fiber compressed by the plate from above. It is characterized by its presence.

Therefore, the basis weight changing mechanism needs to be provided on the conveyor, and the width adjusting plate needs to be provided on the upper side of the side press rollers (the side where the laminated fibers flow). When viewed in the conveyance direction of the conveyor, it is important that the center presser rollers are provided at least from the upper end of the width adjusting plate to the lower end of the side presser rollers. Any type of material may be used as long as it can hold down the laminated fibers being conveyed within a predetermined width and does not prevent the pressed laminated fibers from being conveyed, but caterpillar type It is sufficient that the 6-width shifting plate, preferably a press roller, is a stationary plate of an appropriate shape so that the laminated fibers carried by the conveyor collide with the plate and naturally flow toward the center.

The raw material fiber material conveniently used in the present invention is a roving-like or cotton-like organic or inorganic fiber. In the case of manufacturing a glass fiber mat, glass fiber alone may be used, but organic fibers such as polyethylene fibers may be used as bonding fibers in the amount of 5 to 50%.
% mixing is preferred.

(Function) In the apparatus configured as described above, the gathering plate guides both sides of the laminated fibers toward the center so as to narrow the width of the laminated fibers conveyed by the conveyor to a predetermined width. At this time, the center part of the laminated fiber is pressed and held from above by the center presser roller, so it is not compressed, and only the side parts of the laminated fiber that are not held by the center presser roller are moved in the width direction by the gathering plate. Compressed. As a result, both sides of the laminated fiber with increased basis weight swell upward, but the side pressing roller presses the compressed laminated fiber on both sides from above.

The laminated fibers in which the density has been increased only on both sides are needle-bunched to form a fiber mat with increased basis weight on both sides.

(Example) Hereinafter, an example of the fiber mat manufacturing apparatus of the present invention will be described using the drawings.

The fiber mat manufacturing apparatus of this embodiment is an apparatus for manufacturing fiber mats according to the steps shown in FIG. 3, and is a conventional apparatus equipped with a basis weight changing mechanism. The basis weight changing mechanism is provided on the conveyor 2 for conveying the laminated fibers 1 between the laminating process and the needle punching process.

As shown in FIGS. 1 and 2, the basis weight changing mechanism consists of a center presser roller 3 provided on the conveyor 2 so as to be located at the center of the width of the conveyor, and two rollers provided on both sides of the center presser roller 3. side presser rollers 5, 5 and these rollers 5,
It consists of left-right symmetrical shifting plates 4, 4 provided on the upstream side of the conveyor belt 5 (upstream side of the flow of objects conveyed by the conveyor).

The center presser roller 3 and side presser rollers 5, 5 are
In either case, a belt of an appropriate width is stretched around two parallel cylindrical rotating rolls each having a means (not shown) for adjusting and fixing the height, so that the rolls can rotate freely.

The width shifting plates 4.4 are vertically provided so as to be almost in contact with the conveyor 2. The spacing between the width shifting plates 4.4 can be freely set by means of position adjusting means 7, 7 attached to them. However, by using a curved plate 4, it is widened between the upper ends 4a, 4a,
It is designed to be narrower between the lower end portions 4b, 4b. Therefore, the laminated fibers 1 that have been conveyed by the conveyor with a width slightly wider than a predetermined width are collected by the collection plate 4.4. At that time, the center presser roller 3
Since the central part 1b of the laminated fiber 1 that is continuously conveyed by the conveyor 2 is pressed and held from above, the laminated fiber 1 is compressed in the width direction only at both side parts 1a and la. It will be sent to you. The thickness of the compressed laminated fibers on both sides 1a and 1a increases, but then the side pressing rollers 5 and 1a increase in thickness.
Pressed by 5. By passing the laminated fiber 1 through the basis weight changing mechanism of the present device in this way, a mat material 6 with relatively higher density at both sides 6a, 6a than at the center 6b can be obtained, but this is then passed through the needle. It is punched to form a fiber mat with high strength (rigidity) on both sides.

Although this embodiment has been described as a cross-layer type fiber mat manufacturing apparatus, the apparatus of the present invention is not limited to this, but is also applicable to an air-lay type having a mechanism for conveying the laminated fibers 1 on a conveyor 2 or other types of fiber mat manufacturing apparatus. It can be applied to mat manufacturing equipment.

(Effects of the Invention) As is clear from the above explanation, according to the manufacturing apparatus of the present invention, it is possible to manufacture a fiber mat with increased rigidity only on the necessary side parts without increasing the basis weight of the entire mat. It is possible to reduce costs through savings and reduce the weight of the fiber mat.

Further, when the fiber mat is manufactured using the apparatus of the present invention, there are no unstable quality parts on both sides of the fiber mat, and there is no need to trim and remove those parts. In this way, all the fibers on both sides can be effectively utilized and the yield is improved, so that manufacturing costs can be reduced in these respects as well.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the basis weight changing mechanism of a fiber mat manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a fiber mat manufacturing process using one type of card cloth layer. FIG. In the figure 1...Laminated fiber 1a...Both sides Ib...Central part 2...Sconveyor 3...Center presser roller 4...Width adjustment plate

Claims (1)

[Claims] A center pressing roller presses the center of the laminated fibers continuously conveyed by the conveyor from above, a width adjusting plate guides both sides of the laminated fibers from the sides toward the center and compresses them, and the plate compresses the laminated fibers. 1. An apparatus for manufacturing a fiber mat, characterized in that it is equipped with a basis weight changing mechanism comprising side press rollers that press both sides of laminated fibers from above.