JPH0136940Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field and Purpose of the Invention) The present invention relates to a needle punching device for producing a nonwoven fabric by intertwining the fibers of a fibrous web with each other. The purpose of the present invention is to provide a needle punch device capable of high-speed feeding.

(Embodiments of the invention) The needle punch device of the invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows the needle punch device of the present invention,
The needle punch device has a needle base plate 5 that is movable up and down.

As shown in FIG. 2, a large number of needles 6 are fixed and protruding from one side of the needle substrate 5.

Each needle 6 has a branch-like barb 6a,
The barb 6a is used to entangle the fibers of the fibrous web 1 when inserted into the fibrous web 1.

A stripper plate 2 on the needle 6 side and a bed plate 3 on the opposite side are provided to sandwich the fiber web 1 to be sent next on both sides.

Stripper plate 2 and bed plate 3
each has a hole for guiding the needle 6 through which the needle 6 passes.

As shown in FIGS. 2 and 3, the opening 8a of the stripper plate 2 is wider on the needle 6 side than the opening 8b on the fiber web 1 side.

The illustrated hole 8 is a linearly tapered circular hole having an inclination angle A, for example, 45 to 89 degrees,
Preferably, the angle is 60-85°.

The operation of the needle punch device of the present invention shown in the above embodiments will now be described.

That is, the fiber web 1 is fed between the stripper plate 2 and the bed plate 3.

At the same time, the needle 6 moves up and down, and when it descends, the needle 6 moves into the hole 8 of the stripper plate 2.
is inserted first.

At this time, since the opening 8a of the hole 8 on the needle 6 side is made wider than the opening 8b on the fiber web 1 side, the needle 6 can be inserted into the hole 8 smoothly.

That is, even if the fiber web 1 is fed at a high speed and the needle 6 vibrates when being pulled out, the needle 6 can be inserted extremely smoothly even with the vibration.

After passing through the hole 8, the needle 6 is inserted into the fibrous web 1 to intertwine the fibers of the fibrous web 1.

Thereafter, the needle 6 is pulled out from the fibrous web 1, and the above steps are repeated for the fibrous web 1 to be fed, and the needle punching process is performed on the fibrous web 1.

FIG. 4 shows another stripper plate of the needle punch device of the present invention, in which the holes 8 of the stripper plate 2 are tapered, similar to those described above, but the taper is straight. It is characterized by a curved shape rather than a straight shape.

FIG. 5 shows another stripper plate of the needle punch device of the present invention, in which the hole 8 of the stripper plate 2 has an opening 8a on the needle 6 side that is elongated in the feeding direction of the fibrous web 1. The feature is that it corresponds to the vibration direction.

(Effects of the invention) The embodiments of the needle punch device of the invention are as described above, and the effects thereof are listed below.

(1) The needle punching device of the present invention has the configuration described in the claims of the utility model registration, and in particular, the opening of the stripper plate hole on the needle side is wider than the opening on the fiber web side, so the needle can It is inserted smoothly into the hole, so there is no need to worry about the needle breaking.

(2) The needle punch device of the present invention has the same configuration as above, and in particular, the opening of the stripper plate hole on the needle side is wider than the opening on the fiber web side, so even needles that are subject to vibration can be inserted extremely smoothly. As a result, the fiber web can be fed at high speed.

(3) The needle punch device of the present invention has the same configuration as above, and in particular, the opening of the stripper plate hole on the fiber web side is narrower than the opening on the needle side. Since the needle is pulled out while being restrained by the opening on the web side, vibration of the needle is suppressed.

(4) The needle punching device of the present invention has the same configuration as above, and in particular, the opening of the stripper plate hole on the fiber web side is narrow, so when the needle is pulled out from the fiber web, the fiber web is closed to the narrow opening. As a result, stable needle punching processing can be performed without causing distortion due to being pressed and pulled out.

(5) The needle punch device of the present invention has the same configuration as above, and in particular, the opening of the stripper plate hole on the fiber web side is narrow, so the fiber web being fed digs into the hole and creates resistance to feeding. As a result, smooth feeding is possible.

[Brief explanation of the drawing]

Fig. 1 is a side view of the needle punch device of the present invention, Fig. 2 is a sectional side view of the stripper plate of the above, Fig. 3 is a plan view of the needle side of the stripper plate of the above, and Fig. 4 is the same as the above and others. FIG. 5 is a cross-sectional side view of the hole in the stripper plate, and FIG. 5 is a plan view of the needle side of another stripper plate. DESCRIPTION OF SYMBOLS 1...Fiber web, 2...Stripper plate, 3...Bed plate, 5...Needle substrate, 6...Needle, 6a...Barb, 8...
Hole.

Claims (1)

[Scope of utility model registration request] A needle that can move up and down, a stripper plate on the needle side that clamps the fiber web on both sides, a bed plate on the opposite side, and a needle of the stripper plate in which the opening on the needle side is wider than the opening on the fiber web side. A needle punch device consisting of a guide hole.