JPS6158585B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tufting machine for carpets.

Prior Art FIG. 1 shows a conventional carpet tufting machine.

This tufting machine uses thread 4 for pile 5.
The rotational speed of the feed roller 1 that feeds out the feed was always constant, and the guide bar 2 was provided so as not to be movable. In contrast to the guide bar 2, the needle bar 3 is provided so as to be movable in the width direction (left and right) of the carpet, and is designed to move the base fabric 6 of the carpet during tufting.
Various patterns began to be woven into the fabric. This made it possible to prevent linear weaving flaws from forming on the base fabric 6.

However, in this tufting machine, when the needle bar 3 moves in either the left or right direction,
The yarn was pulled between the feed roller 1 and the guide bar 2 and between the guide bar 2 and the needle bar 3, and a large tension was temporarily applied to the yarn 4. After the needle 9 tufts the thread 4 into the carpet base fabric 6, the tension of the thread increases and the height of the pile decreases, and when the guide bar 2 returns from the circuit position to the original position, the thread 4
is in a relaxed state with no tension applied, so
After tufting, the height of pile 5 increased.
As a result, the heights of the piles 5 on the surface of the base fabric 6 became uneven, resulting in a defect that the carpet surface became rough.

An object of the present invention is to provide a carpet tufting machine that eliminates the above-mentioned defects and is capable of forming piles so that the surface of the carpet base fabric is smooth without any unevenness. be.

Example Hereinafter, an example embodying the present invention will be described as a second example.
This will be explained according to Figure 3.

The feed roller 1 sends out a plurality of yarns 4 for piles 5 unwound from a cone to a guide bar 2 while actively rotating, and the guide bar 2 guides the yarns 4 to a needle bar 3. The guide bar 2 and the needle bar 3 are both movable left and right.
An interlocking device 7 for interlocking is connected. The interlocking device 7 is connected to a rotational speed adjusting device 8 that adjusts the rotational speed of the feed roller 1 so that a constant tension is always applied to the yarn 4.

The needle bar 3 has a plurality of needles 9 installed at regular intervals on its lower surface.
The needle 9 is used to tuft the yarn 4 onto the base fabric 6 to form the pile 5.

Now, the operation of the tufting machine configured as described above will be explained below.

The interlocking device 7 interlocks the guide bar 2 and the needle bar 3 in the same direction, and also allows both the guide bar 2 and the needle bar 3 to move in the same direction.
It also has the ability to electrically sense movement. As the bars 2 and 3 move, the interlocking device 7 sends an electrical signal to the rotational speed adjustment device 8, and the rotational speed adjustment device 8 adjusts the rotational speed of the feed roller 1 according to the electrical signal. has been decided. That is, the rotation speed of the feed roller 1 is
The amount increases as both bars 2 and 3 move, and the amount of yarn fed out also increases. Then, the rotational speed decreases when both bars 2, 3 return from the moving position to their original positions, and the amount of yarn fed out also decreases.

As shown in FIG. 3, when the guide bar 2 and needle bar 3 move in either the left or right direction during tufting, the guide bar 2 pulls the thread 4 in the moving direction. At this time, the movement of the guide bar 2 is sensed by the interlocking device 7, and the rotational speed of the feed roller 1 is increased via the rotational speed adjusting device 8 in response to a signal from the interlocking device 7, so that the feed roller 1 is guided. The length of the thread 4 fed to the bar 2 also increases. Therefore, no large tension is applied to the yarn 4 between the feed roller 1 and the guide bar 2. Also, guide bar 2 and needle bar 3
As described above, since the threads 2 and 3 move in synchronization with each other in the same direction, an unnecessarily large tension is not applied to the thread 4 between the threads 2 and 3.

Furthermore, when the guide bar 2 and needle bar 3 return from the moving position to their original positions, the amount of yarn 4 fed out decreases as described above. It does not become too loose, and the thread 4 is kept under appropriate tension. And both bars 2,
3 are interlocked, so the tension applied to the thread 4 does not change between them.

In this way, the yarn 4 is tufted onto the carpet base fabric 6 by the needle 9 under a constant and appropriate tension, so that the height of the pile 5 varies after tufting, resulting in The heights will not be uneven.

Effects As described in detail above, the present invention includes a rotatably provided feed roller 1 for feeding yarn 4 for pile 5, and a horizontal movement mechanism for feeding yarn 4 from feed roller 1 via guide bar 2. In the tufting machine, the needle bar 3 has a plurality of needles 9, which are provided on the needle bar 3, and are used for tufting the yarn 4 onto the base fabric 6 of the carpet to form the pile 5.
an interlocking device 7 that moves the feed roller 1 in synchronization with the movement of the needle bar 3 in the same direction as the needle bar 3;
and a rotation speed adjustment device 8 that controls the rotation of the
It has the excellent effect of being able to form piles so that the surface is smooth against the base fabric of the carpet.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing a conventional example, Figures 2 and 3
The figure is a schematic diagram showing a tufting machine of the present invention. Feed roller...1, guide bar...2, needle bar...3, thread...4, pile...5, base fabric...6, interlocking device...7, rotational speed adjusting device...8.

Claims (1)

[Claims] 1. A rotatably provided feed roller 1 for feeding out yarn 4 for the pile 5, and a needle bar 3 that can move laterally to which the yarn 4 is fed from the feed roller 1 via a guide bar 2. In a tufting machine having a plurality of needles 9 provided on the same needle bar 3 and for tufting the yarn 4 onto the base fabric 6 of the carpet to form the pile 5, the guide bar 2 is connected to the needle bar 3. It consists of an interlocking device 7 that moves the feed roller 1 in the same direction in synchronization with the movement, and a rotation speed adjusting device 8 that is connected to the interlocking device 7 and controls the rotation of the feed roller 1 according to the interlocking device 7. Features of tufting machine.