JP3041449B2 - Tufted machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tufted machine having a loop pile forming means.

[0002]

2. Description of the Related Art In a tufted machine, a pile yarn loop formed by inserting a pile yarn into a base cloth by a needle is transferred from the needle to a looper, and cut into a knife when the pile yarn loop is directly engaged with the looper. It becomes a cut pile, and when it comes off from the tip of the looper, it becomes a loop pile. Normally, the base fabric from which the needles have been removed is transported by one stitch in the length direction, and the pile implanted at that time moves together with the base fabric and moves away from the needle operating position, and the pile fabric on which the pile is not implanted is placed. Is set to the needle operating position, where a new pile is implanted. A large number of needles arranged in the width direction of the tufted machine in this way form a pile row continuing in the length direction of the base fabric in cooperation with the looper, and a large number of pile rows arranged in the width direction. A pile layer is formed on the base fabric.

[0003]

In the process of planting a loop pile, a loop pile 16 (hereinafter, referred to as the above-mentioned loop pile) which has been planted prior to the transport of the base cloth is inclined and the tip thereof is a needle. It may protrude into the operating position 15. In such a case, the next loop pile 1
The needle 21 inserted into the base fabric for implanting the next loop pile 16b following 6 is placed in its loop operating position 1
5, the loop pile 16 protrudes into the loop of the loop pile 16 and a chain stitch occurs in which the previous loop pile 16 and the next loop pile 16b are connected in a chain (FIG. 4).

[0004] This chain stitch hardly occurs in a tufted machine exclusively for loop piles in which the looper is oriented only in the direction in which the base cloth is conveyed and forms only the loop pile, when the pile density is coarse and the pile length is short. However, the tip of the looper 12 is opposite to the transport direction of the base cloth 11, and the pile thread loop 16 is selectively disengaged from the looper 12 to selectively plant the cut pile 19 and the loop pile 20. In the pile / loop pile / tufted machine, the pile yarn loop (16b)
When the looper 12 is pushed out to the needle operating position 15 to receive the needle, the looper 12 is operated so as to touch the loop pile 16 and push it out to the needle operating position 15, so that a chain stitch is likely to occur (FIG. 4).

In particular, piles of different colors are supplied to a set of several needles adjacent to each other which are arranged in the width direction of the tufted machine, and the base fabric is not conveyed for several stitch cycles and is stopped. In the meantime, the needle is moved in the width direction of the tufted machine by one needle gauge every stitch cycle, and the loopers arranged with the same gauge as the needle gauge in the width direction of the tufted machine introduce pile threads of different colors. The needles are selectively inserted into the base cloth so that the pile yarn loop can be received from any one of a plurality of needles forming a set. In a so-called color tech tufted machine described in JP-A-3-294561 and the like, which can draw on a surface, several stages in which a base fabric is not conveyed and stopped are stopped. Looper facing the needle not inserted in the base fabric in each stitch cycle between Chisaikuru, like the looper facing the needle to be inserted is selected on the base fabric, reciprocates toward the needle operating position. In that case, when the looper facing the needle that is not inserted into the base fabric forms a loop pile ahead in the stitch cycle, the looper operates to push the loop pile to the needle operation position, and thus the chain stitch is performed. Is easy to occur.

As a method of preventing the chain stitch, there is known a method in which an air current is jetted in a transport direction of the base fabric, and the loop pile is pushed down in the transport direction of the base fabric by the air flow. However, this method is suitable for a loop pile tufted machine in which the loop pile tip protrudes in the direction in which the loop pile moves from the looper together with the base cloth, that is, the direction in which the base cloth is conveyed, but the looper tip is not suitable. It is not suitable for a cut pile / loop pile combined tufted machine projecting in the opposite direction to the cloth transport direction. This is because the pile yarn loops that are to be dislodged and become loop piles are pushed deep by the airflow and are difficult to be dislodged from the looper. When the density is high, the loop pile immediately after planting is easily pushed back to the needle operating position by the already formed pile layer, and it is necessary to push it back in the pile layer side, that is, in the transport direction of the base fabric. It is uneconomical because it requires too much energy, and if the airflow is set to a high pressure, the pile yarn loop that should be formed in a loop shape so that the looper enters and gets caught is deformed by the high-pressure airflow, causing tuft miss. It will also be.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention is intended to be applied not only to a tufted machine for exclusive use of a loop pile but also to a tufted machine for a cut pile and a loop pile, in particular, a color tech tufted machine, which is planted back and forth in the longitudinal direction of a base cloth. An object of the present invention is to prevent a chain stitch that occurs when a loop pile and a loop pile are linked in a chain.

[0008]

In the tufted machine according to the present invention, between the base cloth 11 and the looper 12 mounted on the tufted machine, the bristle tips 13 face in the direction of transport of the base cloth,
A brush 17 in which the hair root 14 is located at a position retracted from the needle operating position 15 and is in contact with the loop pile 16 immediately after planting.
And the brush 17 is synchronized with the reciprocating motion of the looper,
That is, a first feature is that a brush driving means for reciprocatingly driving in the transport direction of the base cloth at the same time as the reciprocating motion of the looper is provided.

A second feature of the tufted machine according to the present invention resides in that, in addition to the first feature, there is provided a yarn feed adjusting means for adjusting the amount of pile yarn sent out.

A third feature of the tufted machine according to the present invention is that, in addition to any one of the first and second features, a needle shift means for reciprocally driving the needle 21 in the machine width direction and an intermittent base cloth 11 are provided. The present invention has an intermittent base cloth feeding means for transporting the base cloth.

A fourth feature of the tufted machine according to the present invention is that in addition to any of the first, second, and third features,
The looper 12 cooperates with the knife 18 to selectively form the cut pile 19 and the loop pile 20 so as to be a cut pile / loop pile combined looper.

A fifth feature of the tufted machine according to the present invention is that in addition to any one of the first, second, third, and fourth features, the tufted machine further has a needle selecting means for individually and selectively driving the needles. It is in.

[0013]

1 to 3 show a color tech tufted machine having a needle shifting means, an intermittent backing cloth feeding means and a needle selecting means, including a pile yarn to a needle for each stitch cycle. And a pile / loop pile selecting / forming means for selecting whether the pile yarn loop received by the looper should be a loop pile or a cut pile. The needle shift means includes a needle bar 22 that supports a large number of needles 21 so as to be able to move up and down, and a cam device 23 that reciprocates the needle bar 22 in the width direction of the tufted machine. The intermittent base cloth feeding means includes a spike roll 24 for feeding the base cloth and a servo motor 25 for intermittently driving the spike roll 24 to rotate. The needle selecting means is constituted by a push bar (not shown) for driving a number of needle holders 26 up and down, and a pattern control device 27 for controlling engagement and disengagement of the needle holder 26 and the push bar. Are mounted on the lower end of each needle holder 26. The yarn feed adjusting means includes a clutch-in roll 29 which incorporates a clutch 28 and whose rotational speed is controlled by the clutch. The cut pile / loop pile selecting and forming means cooperates with the knife 18 to cut the pile yarn loop 30 to make a cut pile, and the cut pile / loop pile dual-purpose looper 12, and closes the tip of the looper to form the pile yarn loop 30. The clip 31 includes a clip 31 for preventing detachment from the looper, and a clip driving device 32 for controlling the opening and closing of the tip of the looper by changing the contact position of the clip 31 with the looper 12.

The cam device 23 of the needle shifting means, the servomotor 25 of the intermittent base cloth feeding means, the pattern control device 27 of the needle selecting means, the clutch 2 of the yarn feeding adjusting means
8, and the clip driving device 32 of the cut pile / loop pile selecting / forming means is operated synchronously via the computer 33, so that the required color is obtained at the required position on the base fabric by the required pile yarn 34. Long cut piles 19 or loop piles 20 are selectively implanted.

The needle shift means is described in US Pat. No. 3,026,830, US Pat. No. 3,396,687, US Pat. No. 3,203,388, US Pat. No. 3,393,654, US Pat. No. 3,577,943, Japanese Patent Publication Nos. 50-15185 and 54.
43939, JP-B-56-13819, JP-A-55-1983
26213 and the like. The needle selecting means is described in U.S. Pat. No. 3,056,364, U.S. Pat. No. 3,177,833, U.S. Pat.
-14227, JP-B-54-10906, JP-B-57-
4366, JP-A-59-179863, JP-A-60-3
9466, JP-A-60-88166, JP-A-63-13
553 and the like. The yarn feed adjusting means is disclosed in U.S. Pat.
7701, U.S. Pat. No. 3,272,163, U.S. Pat.
188, U.S. Pat. No. 3,435,787, JP-A-43-987
2, JP-A-44-12071 and JP-A-44-2202
5, Japanese Utility Model Laid-Open No. 47-40628, Japanese Patent Laid-Open No. 45-1914
4, JP-A-46-11912, JP-B-55-3282
2. Japanese Patent Publication No. 57-30415, Japanese Patent Publication No. 50-1698
5, Japanese Patent Publication 55-23944, Japanese Patent Publication 57-8707,
It is known as disclosed in JP-B-44-3395 and JP-A-50-118860. The means for selectively forming a cut pile and a loop pile is described in JP-B-39-1642.
6, Japanese Utility Model Publication No. 59-31752, Japanese Patent Publication No. 62-1953
9. Japanese Patent Publication No. 62-21897, Japanese Patent Publication No. 61-35303
Etc. and are publicly known. Any of these known needle shift means, needle selecting means, yarn feed adjusting means, cut pile / loop pile selecting / forming means, and cut pile / loop pile combined looper can be applied to the present invention.

The base cloth 11 is supported by a finger needle 35 at a needle operating position 15 where the needle 21 moves up and down to be inserted into the base cloth. Therefore, the brush 17
In the lower side of the finger needle 35, the bristle tip 13 is
It is driven so as to reciprocate back and forth around the needle operating position 15 in parallel with 1. The nap (17) of the brush is preferably made of synthetic fibers having a single yarn fineness of 100 to 500 denier. In order to prevent the nap (17) of the brush from entering the loop of the pile thread loop 30, the needle 21 inserted into the base cloth 11 intersects the nap (17) so that the nap is separated. It is preferable to set the position of the bristle tip 13 such that the pile thread loop 30 is transferred to the looper 12 under the nap (17).

In FIG. 1, reference numeral 40 denotes a locking shaft for reversing forward and reverse. An arm 41 attached to the locking shaft 40 and a locking arm 37 are connected by a connecting rod 42. The looper 12
It is carried by a locking arm 37 attached to a looper shaft 36 and reciprocally driven in the transport direction of the base cloth 11. For this purpose, a looper shaft 36 is used for the brush driving means, and the locking arm 37 is formed in a horseshoe shape protruding to a position facing the looper 12, or another arm 37 similar to the locking arm 37 is used.
a to the looper shaft 36 and the looper 1
It is preferable to attach the brush 17 to the upper end of the arm facing 2. Then, as shown in FIG. 2 (a), the pile thread loop 30 transferred to the looper 12 from the needle 21 which has been pushed down between the naps (17) is
As shown in FIG. 2B, when the looper 12 retreats from the needle operating position 15, the brush 17 moves forward in the transport direction of the base cloth 11, so that the brush 17 comes off the looper 12 as shown in FIG. 2C. At this point, the clothes are sandwiched between the naps (17), and are pushed back by the advancing brush (17) in the transport direction of the base cloth.

FIG. 2 illustrates the process of forming the loop pile 20, in which the clip 31 is in a retracted position so as not to prevent the pile yarn loop 30 from coming off the looper 12, but the cut pile 19 is When formed, the clip 31 is placed in an extruded position so as to protrude beyond the needle operating position 15. Then,
The pile thread loop 30a is locked to the looper at a position deeper than the looper 12 than the tip 38 of the clip pressed against the looper 12, and is not disengaged from the looper by the clip 31 and is not stitched. In the cycle, as shown in FIG.
With 1, it further moves to a position deep in the looper, where it is cut into a looper 12 and a knife 18 to form a cut pile 19.

In the color-tech tufted machine, the base fabric 11 may not be transported even when the needle is pulled out and becomes free, and may shift to the next stitch cycle without stopping. However, in the color tech tufted machine, the intermittent fabric feed is carried in one stitch cycle out of several stitch cycles, and each looper is operated in one cycle of the intermittent fabric feed. One pile is to be formed in cooperation with any one needle in any one stitch cycle. For this reason, the needle 21 is selected so that the looper 12a (FIG. 3) on which the previous loop pile 16 has been formed overlaps to form a pile in the next stitch cycle that is continuously performed while the base cloth is not conveyed. It is not inserted into the base cloth 11. Therefore, a chain stitch cannot occur in a stitch cycle between the time when the loop pile 16 is planted and the time when the next base fabric is conveyed.

Of course, even in that case, as shown in FIG.
Loop pile 1 already in one cycle of intermittent base cloth feeding
The looper 12a where the needle 6 is implanted and the needle 21 is not inserted is also put together with another looper 12b that will form a pile in any stitch cycle until the base fabric is transported next. And is reciprocated to the needle operating position 15 while the looper 12a is moved to the needle operating position 1.
When moving forward toward 5, the brush 17 retreats in synchronization with the looper 12, so that the previous loop pile 16 is gently pinched between the raised hairs until the base fabric is conveyed in any subsequent stitch cycle. Then, the brush 17 is pushed back by the brush 17 in the transport direction of the base cloth.

However, in practice, the gap between the brushes (17)
Since the density of the hair pile 14 is more dense than that of the hair tip 13 in the open hair state, the loop pile 16 may penetrate deeper into the hair root 14 even if it is sandwiched between standing hairs. However, the brush 17 and the looper 12 move around the needle operating position 15 without the needle being inserted in the next stitch cycle because the needle moves toward the coarse hair tip 13 and easily comes out of the hair tip 13. As shown in FIG. 2 (d), when the
3 and pushed out in the transport direction of the base cloth.

Even if it is not pushed out from the bristle tip 13, the loop pile 16 is moved in the direction of the brush roots 13, that is, in the direction opposite to the direction in which the base cloth is conveyed, before the base cloth 11 is conveyed. Does not move, so that the chain stitch does not occur in the process of forming the next pile by the looper 12a having formed the previous loop pile 16.

As described above, the brush 17 pushes back the previous loop pile 16 so as not to protrude to the needle operating position 15, and is used for holding the previous loop pile 16 between the naps (17). However, since the loop pile 16 is more likely to come off the brush 17 as the density of the nap (17) at the tip of the nap is coarse, the density of the nap is such that the loop pile is securely sandwiched between the nap. There is no need to be elaborate.

FIG. 3 shows a state in which the needle 21 moves in the width direction of the tufted machine when the base cloth is stopped, and in the course of the movement, one of the needles 21 is selected toward each looper 12 and the base cloth is selected. 11 illustrates a pile planting process of a color tech tufted machine, in which each looper 12 is inserted into the pile 11 and each looper 12 cooperates with any one of the needles 21 to form one pile (16).

FIGS. 1 to 3 illustrate the operation of the brush 17 in a tufted machine equipped with a cut pile / loop pile looper. In a tufted machine dedicated to loop pile, the brush tip and the looper are used. Both ends are directed in the direction of transport of the base fabric, and they are synchronously advanced to the needle operating position. As a result, the tip of the brush pushes out the previous loop pile in the direction of transport of the base fabric. In this case, the needle is inserted into the base cloth, so that the chain stitch does not occur.
In the tufted machine dedicated to loop pile, the locking arm carrying the looper dedicated to loop pile is used as it is for brush driving means, and the brush is attached to the looper bar so as to be positioned above the looper.

[0026]

As described above, according to the present invention (claim 1), a loop pile can be planted without generating a chain stitch in not only a loop pile tufted machine but also a cut pile / loop pile combined tufted machine. I can do it.

For this reason, in a conventional tufted machine equipped with a thread feed adjusting device, when a pattern is drawn by a height difference between the high loop pile 20 and the low loop pile 20b, the conventional technique requires a high loop to avoid a chain stitch. The length of the pile 20 is also limited to a certain range of pile length, but according to the present invention (claim 2), the height difference can be increased to sharpen the shape of the design.

In particular, in a cut pile / loop pile tufted machine, the looper is oriented in the direction opposite to the direction in which the base cloth is conveyed, and the loop pile 16 is protruded to the needle operating position by the looper, and chain stitching easily occurs. Therefore, the pile length of the loop pile 20 is
It is difficult to increase the length to reach the looper 12 from above, and it is difficult to plant the loop pile 20 having the same pile length as the cut pile 19, however, the present invention (Claim 3) According to this, a long loop pile 20 equivalent to the cut pile 19 can be freely laid, and as a result, the yarn feed adjusting device is mounted on the cut pile tufted machine, and the same pile length of the cut pile 19 is used. Loop pile 20 and 1 with a shorter pile length
It is also possible to draw a three-dimensional pattern that is sharp in shape and sharp in height by the kind or several kinds of low loop piles 20b.

In a tufted machine equipped with a needle shift means and an intermittent base cloth feeding means for forming a pile while moving the needle in the width direction in a state where the base cloth is stopped, a certain number of stitch cycles in which the base cloth is stopped is provided. The loop pile 16 is located at the needle operating position 15 during this time, and is rubbed by the looper 12 which moves forward and backward, and is pushed down in the direction opposite to the transport direction of the base fabric, so that chain stitch is easily generated. According to (Claim 4), even in this case, a chain stitch does not occur, and as a result, the back stitch 39 continues in the width direction of the base cloth, and the tufted pile cloth (FIG. 3) can be obtained.

The color-tech tufted machine according to the present invention (claim 5) is provided with a needle selecting means in addition to the yarn feed adjusting device, the cut pile / loop pile selecting / forming means, the needle shift means and the intermittent base cloth feeding means. According to the machine, differences in the form of the piles 19 and 20 between the cut pile and the loop pile and the loop piles 20 and 20b
Pile lengths 34a, 34b,
The luxurious tufted pile fabrics with more complex and versatile and rich three-dimensional effect can be obtained by the different colors of 34c, 34d and 34e.

The tufted pile cloth thus obtained by the tufted machine according to the present invention is used as a rug mainly after being appropriately backed, and is used for a tile carpet used indoors or an artificial grass used outdoors. Not only that, it is also used as a rental mat (rental business mat) by lining a rubber sheet or synthetic resin sheet and applying a dust-collecting oil to the pile as needed at the entrance of a store or office. Therefore, even if the use of the tufted pile fabric obtained by the present invention is limited to the dust control mat, the practice of the present invention is not limited thereby.

[Brief description of the drawings]

FIG. 1 is a side view of a tufted machine according to the present invention.

FIG. 2 is a side view of a main part of the tufted machine according to the present invention, and shows a pile planting process by using (a), (b), (c) and (d).

FIG. 3 is a perspective view of a main part of the tufted machine according to the present invention.

FIG. 4 is a side view of a main part of a tufted machine according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Base cloth 12 Looper 13 Hair tip 14 Hair root 15 Needle operation position 16 Loop pile 17 Brush 18 Knife 19 Cut pile 20 Loop pile 21 Needle 22 Needle bar 23 Cam device 24 Spike roll 25 Servo motor 26 Needle holder 27 Pattern control Device 28 Clutch 29 Clutch-in Roll 30 Pile Thread Loop 31 Clip 32 Clip Drive 33 Computer 34 Pile Thread 35 Finger Needle 36 Looper Shaft 37 Locking Arm 38 Clip Tip 39 Back Stitch 40 Locking Shaft 41 Arm

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D05C 15/16 D05C 15/22-15/24 D05C 15/36

Claims (5)

(57) [Claims] 1. A base cloth (1) set on a tufted machine.
Between 1) and the looper (12), the bristle tip (13) is oriented in the transport direction of the base cloth, the follicle (14) is located at a position retracted from the needle operating position (15), and the loop pile immediately after planting is formed. A tufted machine comprising: a brush (17) in contact with (16); and a brush driving means for reciprocatingly driving the brush (17) in the transport direction of the base cloth at the same time as the reciprocating motion of the looper . 2. The tufted machine according to claim 1, wherein the tufted machine according to claim 1 further includes a yarn feed adjusting means for adjusting a delivery amount of the pile yarn. 3. A tufted machine according to claim 1, comprising a needle shift means for reciprocatingly driving a needle in a machine width direction, and an intermittent base cloth feeding means for intermittently conveying a base cloth. The tufted machine according to claim 1, wherein: 4. The looper (12) according to claim 1,
Cut pile (19) in cooperation with knife (18)
2. The tufted machine according to claim 1, wherein said machine is a looper for cut pile and loop pile for selectively forming a loop pile and a loop pile. 5. The tufted machine according to claim 1,
The tufted machine according to claim 1, further comprising a needle selecting means for selectively and individually driving the needles.