JP2004308062A - Needle clamp in needle-punch machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a needle clamp in a needle punch machine, having a high implanting density of punch needles, and enabling a nonwoven material having a small width size to be precisely and strongly attached to a base material. <P>SOLUTION: The Needle-inserting holes 15 opened at the lower surface, and screw holes 16 communicating with the needle-inserting holes 15 from the outer periphery of the lower part are formed in a seat 11 attached to the lower part of a needlebar. Many punch needles N in a state in which the shank parts n<SB>1</SB>of the needles N are stuck to each other are inserted to the needle-inserting holes 15, and the many needles N are fixed by screwing set screws 17 engaged by screwing in the screw holes 16 to improve the implanting density of the punch needles N. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staple of a needle punching machine for fixing a nonwoven material such as felt or wool to a base material made of fabric.
[0002]
[Prior art]
In general, a needle punching machine has a needle pin attached to a lower end of a needle bar which is moved up and down, and a plurality of punch needles implanted in the needle pin, a base material made of a cloth placed on a needle plate, and a The nonwoven material such as felt placed on the upper surface is pierced, and the fibers of the nonwoven material applied to the barbs (thorns) formed on each punch needle are entangled with the base material so as to fix the nonwoven material. I have.
[0003]
The punch needle provided in the needle stay has a configuration in which a blade portion is provided at the tip of a shank portion and a plurality of barbs are formed in the blade portion, similarly to a generally known felt needle.
[0004]
The punch needle having the above configuration is usually detachably attached to the base so that when the punch needle is broken, the broken punch needle can be replaced with a new punch needle.
[0005]
As a staple having a punch needle detachably provided, a staple described in Patent Document 1 is conventionally known. The needle stay described in Patent Document 1 has a plurality of vertical holes arranged at equal intervals in the width direction of the pedestal at intervals in the length direction of the pedestal, and is arranged in the width direction of the pedestal from the side surface of the pedestal. A plurality of vertical holes are provided with screw holes having closed ends so as to penetrate the vertical holes, and the same number of setscrews as the plurality of vertical holes are screwed into the screw holes, and a punch needle inserted into each vertical hole by tightening each set screw. Is fixed, and the punch needle can be replaced by loosening the set screw.
[0006]
[Patent Document 1]
JP-A-11-350328
[Problems to be solved by the invention]
By the way, in the needle anchor described in Patent Document 1, the needle insertion hole provided in the pedestal has a size that allows one punch needle to be inserted, and a set screw is screw-engaged between the needle insertion holes. Since the screw holes are formed, the interval between the needle insertion holes is inevitably widened, and it is not possible to implant punch needles with high density.
[0008]
For this reason, if the nonwoven material placed on the base material is a thin material such as wool, the number of punch needles will decrease, the fiber of the nonwoven material will be less entangled, and On the other hand, the nonwoven material cannot be firmly attached.
[0009]
Further, since a needle hole is formed around the nonwoven material in the base material, there is also a disadvantage that the strength of the base material is reduced.
[0010]
SUMMARY OF THE INVENTION An object of the present invention is to provide a needle pinch of a needle punching machine in which the implantation density of punch needles is increased and a non-woven material having a small width can be securely attached to a substrate. is there.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the present invention, a pedestal attached to the lower end of a needle bar is provided with a needle insertion hole opened on the lower surface thereof and a screw hole penetrating from the outer periphery to the needle insertion hole. A set screw having a size that allows the needle insertion hole to be inserted in a state where the shank portions of the plurality of punch needles are in close contact with each other, and a plurality of punch needles inserted into the needle insertion holes being threadedly engaged with screw holes. The structure fixed by tightening was adopted.
[0012]
According to the above configuration, a plurality of punch needles can be attached to the needle insertion holes in a state where the shank portions of the punch needles are in close contact with each other, so that the punch needles can be implanted with high density. For this reason, the number of penetrations of the punch needles into the nonwoven material increases, and even if the nonwoven material has a small width, the nonwoven material can be securely and firmly attached to the base material. .
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a needle plate 2 is attached to a bed 1 of a needle punching machine, and a pressing plate 3 is provided on the needle plate 2. The presser plate 3 is moved up and down by the operation of a lever (not shown), and when lowering, presses the base material A placed on the needle plate 2 and the nonwoven material a superimposed on the base material A. I have.
[0014]
A needle pin 10 is attached to a lower end of a needle bar 4 provided to be able to move up and down with respect to the needle plate 2. The staple 10 moves up and down together with the needle bar 4, and when descending, the plurality of punch needles N held by the staple 10 penetrate the base material A and the non-woven material a pressed by the press plate 3. ing.
[0015]
For this reason, a needle hole through which the punch needle N is inserted is formed in the holding plate 3 and the needle plate 2, but is omitted in the drawing.
[0016]
Here, the punch needle N, as shown in FIG. 3, the blade portion n ₂ provided at the distal end of the shank portion n ₁ consisting of a round shaft, provided with a plurality of barbs (not shown) to the blade unit n ₂ configuration It has been.
[0017]
As shown in FIGS. 2 to 4, the needle retainer 10 has a cylindrical pedestal 11, and the pedestal 11 has a needle bar insertion hole 12 into which a lower end portion of the needle bar 4 is inserted on an upper surface, and a needle bar insertion hole 12. A screw hole 13 penetrating the needle bar insertion hole 12 is formed, and a set screw 14 is screwed into the screw hole 13.
[0018]
The pedestal 11 is fitted to the lower end of the needle bar 4 and attached to the needle bar 4 by tightening a set screw 14.
[0019]
A needle insertion hole 15 is formed in the center of the lower surface of the pedestal 11. The pedestal 11 is provided with a screw hole 16 penetrating from the outer periphery of the lower portion to the needle insertion hole 15, and a set screw 17 is screwed into the screw hole 16.
[0020]
Needle insertion hole 15, a plurality of punches needle N, the three punch needle N in the embodiment, is capable sized insertion in a state where each other are brought into close contact with the shank portion n _1, its needle insertion hole 15 The inserted plurality of punch needles N are fixed by tightening the set screw 17.
[0021]
Now, when the needle bar 10 shown in FIGS. 2 to 4 is attached to the lower end of the needle bar 4 shown in FIG. 1 and the needle bar 10 is moved up and down together with the needle bar 4, a plurality of punch needles N are pressed when the needle bar 4 is lowered. The fibers of the non-woven material a engage with the barbs and are pushed into the base material A at the time of the piercing, and the fibers of the non-woven material a are entangled with the base material A. The woven material a is fixed to the base material A.
[0022]
At this time, since a plurality of punches needle N attached to the pedestal 11 is a mounting shank portion n ₁ is mutually close contact, planted bristle density of the punch needle N is high, the nonwoven material in response to the planted bristle density The entanglement density of the fiber a also increases, and as a result, the nonwoven material a can be firmly attached to the base material A.
[0023]
Further, since the planting density of the punch needles N is high, even when the nonwoven material a has a small width such as a wool, a plurality of punch needles N penetrate the nonwoven material a. Thus, the nonwoven material a can be securely and firmly attached to the base material A.
[0024]
When the fibers of the nonwoven material a are stabbed into the base material A, the fibers penetrate the base material A and reach the surface of the base material A, and a pattern of the fibers is formed on the surface. At this time, since the punch needles N are arranged at a high density, fine patterning can be performed.
[0025]
In the embodiment, the pedestal 11 has a cylindrical shape, a single needle insertion hole 15 is provided in the pedestal 11, and three punch needles N are attached to the needle insertion hole 15. The number of the needle insertion holes 15 and the number of the punch needles N are not limited to these. For example, the pedestal 11 may be a rectangular parallelepiped, and a plurality of needle insertion holes 15 may be formed in the pedestal 11. Further, the needle insertion hole 15 may have a size in which more than three punch needles N can be inserted.
[0026]
【The invention's effect】
As described above, in the present invention, a plurality of punch needles are attached to the needle insertion holes formed in the pedestal so that the shank portions of the punch needles are in close contact with each other, so that the punch needles are implanted with high density. can do. For this reason, even if the nonwoven material has a small width such as a wool, a plurality of punch needles can be pierced through the nonwoven material, and the nonwoven material having a small width is applied to the base material. It can be firmly fixed securely.
[0027]
In addition, since the planting density of the punch needles is high, fine patterning can be performed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a needle punching machine to which a staple according to the present invention is attached. FIG. 2 is a perspective view showing an embodiment of the staple according to the present invention. FIG. FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3;
11 Base 15 Needle insertion hole 16 Screw hole 17 Set screw N Punch needle n ₁ Shank

Claims (1)

A pedestal attached to the lower end of the needle bar has a needle insertion hole opened at the lower surface thereof, and a screw hole penetrating from the outer periphery to the needle insertion hole, and the needle insertion hole is formed at each shank portion of a plurality of punch needles. Needle punch of a needle punching machine in which a plurality of punch needles inserted into the needle insertion holes are fixed by tightening set screws which are threadedly engaged with the screw holes.

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