JPH11279928A - Machine for making tufted product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a fabric having tufted piles in which patterns are drawn by both cut piles and looped piles, and the looped piles continuously tuft on a smooth and beautiful pile surface. SOLUTION: This fabric is produced by placing the tip of loopers 52 for making loops in a position nearer to a base fabric 46 than the one of loopers 42 for cutting loops, by making both loopers 42 and loopers 52 cooperate with one of needle, by adjusting the vertically moving length of the needle with every stitching cycle so as to adjust the inserting depth of the needle 41 into the base fabric 46 and to selectively hook the loop 50 of a pile yarn with either one of the two loopers 42 and 52. Loop piles 47 are formed by the looper 52 hooking the loop of a pile yarn which is easy to be off the looper 52 because the looper 52 points to the destination of the conveyed base fabric. Consequently, the length of their piles is uniformalized to form a smooth loop pile surface without unevenness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tufted machine in which a pile yarn is inserted into a base cloth by a needle to plant a pile (hair tuft).

[0002]

2. Description of the Related Art There are two types of piles to be planted on a base cloth: a loop pile having a ring shape as a whole, and a cut pile whose ends are cut open to open hair. The loop pile is formed by the looper hooking and locking a pile thread loop formed at the tip of the needle by inserting the pile thread into the base cloth, and releasing the pile thread loop when the needle comes out of the base cloth. The looper forming the loop pile (hereinafter, referred to as a loop looper) is attached with its tip directed in the transport direction of the base fabric so that the pile yarn loop is easily detached. The cut pile is formed by continuing to lock the pile thread loop caught by the looper even after the needle comes out of the base cloth, and then the looper and the knife cooperate to cut the pile thread loop, and the cut pile is formed. The looper to be formed (hereinafter referred to as a cut looper) is attached with its tip directed in the direction opposite to the transport direction of the base cloth so that the pile thread loop does not come off. A hook is attached to prevent it.

[0003] In addition to the loop looper and the cut looper, there is a looper (hereinafter referred to as a cut loop looper) for selectively forming a loop pile and a cut pile. This cut loop looper is mounted with its tip in the opposite direction to the transport direction of the base fabric, like the cut looper, in order to prevent the pile yarn loop from coming off when forming the cut pile. And, in order to make the pile thread loop come off when forming the loop pile, the cut loop looper is attached with a clip or a gate member that makes the pile thread loop engage shallowly at the tip, or It is attached to a device that retracts into the looper bar so that it does not penetrate deep into the pile thread loop. In the former, the hook seen in the cut looper is not at the tip, and in the latter, the hook seen in the cut looper is attached to the tip. However,
Unlike the hook of the cut looper, the hook of the latter is attached to the bottom with an upward slope toward the tip, so that the pile thread loop is easily released.

In a tufted machine to which a cut loop looper is attached and selectively forms a cut pile and a loop pile (hereinafter referred to as a cut loop tufted machine), when forming a loop pile, a pile to a needle is formed. The pile yarn is given a strong tension by reducing the supply amount of the yarn, and the pile yarn loop is pulled out of the looper, so that the loop pile is shorter than the cut pile. And since the loop pile is shorter than the cut pile, the cut loop looper
The next tufted operation can be performed normally without being caught by the loop pile formed earlier.

[0005]

In a loop pile formed by using a loop looper, the tip of the loop looper is directed in the transport direction of the base cloth, and the pile yarn loop does not apply extra strong tension to the pile yarn. However, since it moves together with the base cloth and comes off the tip of the looper, the pile lengths of the continuously formed loop piles are beautifully uniform, and a smooth loop pile surface is formed. On the other hand, the loop pile formed by using the cut loop looper has a tip directed in the opposite direction to the transport direction of the base fabric so that the pile thread loop does not come off, and is formed from a tip of the looper forming the cut pile. Since the pile yarn is formed by forcibly removing the pile yarn loop by applying a strong tension to the pile yarn, if the loop pile is to form a continuous loop pile surface, the pile length of the continuous loop pile is uniform. The pile pile surface is uneven due to the variation.

[0006] For this reason, the cut loop tufting machine draws a design by forming a groove by a short loop pile on a cut pile surface which can be finished smoothly by shaling, like a groove (cut) by carving. Is applied to the loop pile surface that cannot be smoothed by
It is not applied to draw a design with a convex mountain due to a high cut pile.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make a loop pile surface formed by a cut-loop tufted machine a smooth surface having no irregularities and a uniform length of the loop pile, and the smoothness of the loop pile. To obtain a new tufted pile fabric in which a pattern is drawn by attaching a convex peak due to a high cut pile on a part of the loop pile surface, and furthermore, a cut-loop tufted machine, a level where the entire surface is made of loop pile It is an object of the present invention to be able to be used also as a loop pile tufted machine for producing a loop tufted pile fabric.

[0008]

SUMMARY OF THE INVENTION A tufted machine according to the present invention (claim 1) achieves the above object.
It has two types of loopers: a loop looper whose tip cooperates with one needle in the direction of transport of the base fabric, and a cut looper whose tip is directed in the direction opposite to the direction of transport of the base fabric,
A tip of the loop looper is set at a position closer to the base cloth than a tip of the cut looper, and an insertion depth adjusting device that adjusts a vertical movement distance of a needle inserted into the base cloth for each stitch cycle is provided. It is characterized by.

Another feature of the tufted machine according to the present invention (Claim 2) is that a loop looper whose tip cooperates with one needle is directed in the transport direction of the base cloth, and whose tip is directed in the transport direction of the base cloth. A needle bar that has two types of loopers, a cut looper directed in the opposite direction, and the tip of the loop looper is set at a position closer to the base cloth than the tip of the cut looper, and moves up and down toward the base cloth. The needle is mounted so as to be able to move up and down toward the base cloth, and a lifting and lowering selection device is provided for selectively driving the needle to move up and down from the needle bar to the base cloth every stitch cycle.

Another feature of the tufted machine according to the present invention (Claim 3) is that a loop looper whose tip cooperates with one needle is directed in the direction of transport of the base fabric, and whose tip is directed in the direction of transport of the base fabric. It is equipped with two types of loopers, a cut looper oriented in the opposite direction, and the tip of the loop looper is set closer to the base cloth than the tip of the cut looper. The needle is mounted on the needle holder with the tip facing the base cloth, and the needle guide is driven up and down along the needle holder toward the base cloth. Are provided with two sets of male and female engaging portions that respectively engage with the needle guide bar and the needle holder, and the two sets of engaging portions are stitched. Disengaged selectively engaging each cycle is to include a disengagement selection device.

That is, a feature of the present invention is that the cut looper and the loop looper are not simply arranged alternately in the machine width direction in order to draw a stripe pattern composed of the stitch rows of the cut pile and the stitch rows of the loop pile. , (1)
The cut looper and the loop looper are arranged on the same stitch row, and (2) the loop looper is the upper row,
The cut looper is placed on the top and bottom as the lower stage, and also, instead of simply letting the needle in and out of the needle bar to selectively implant the pile,
(3) The needle is driven toward the base cloth so that the insertion depth into the base cloth changes.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION As a device for drawing a pattern on a pile surface of a tufted pile fabric, a large number of needles arranged in the machine width direction are selectively inserted into a base fabric, and a pile is partially planted. Alternatively, a device (hereinafter, referred to as a needle selection device) for planting a pile of a different color for each needle,
U.S. Pat. No. 3,056,364, U.S. Pat. No. 3,177,833, U.S. Pat. No. 3,547,058, JP-A-59-179873, JP-A-60-88166, JP-A-63-13553, JP-B-46-14227, JP-B-54-10905 (JP-A-50-10905) 161353), Japanese Patent Publication No. 57-43662 (JP-A-56-9664), and Japanese Patent Publication No.
3-256773), Japanese Patent Publication No. 1-60587 (Japanese Unexamined Patent Publication No.
3-309661), Japanese Patent Publication No. 1-60588 (Japanese Unexamined Patent Publication No.
3-309662), Japanese Patent Publication No. 3-34040 (Japanese Unexamined Patent Publication No.
0-39466), Japanese Patent Publication No. 7-109052 (Japanese Unexamined Patent Application Publication No.
-207369) and the like. These known needle selecting devices can be used for the insertion depth adjusting device of the present invention (claim 1).

The lifting / lowering selecting device of the present invention (claim 2) can be constituted by utilizing these known needle selecting devices as the insertion depth adjusting device. That is, the present invention (Claim 2)
In the known needle selection device, the entire needle selection device, specifically, all the needles, specifically, all the needles, including the needles that remain unselected in these known needle selection devices, are inserted into the base fabric at each stitch cycle. The mounted needle support frame is driven up and down toward the base cloth.

FIG. 1 shows a specific example of the lifting / lowering selecting device. The needle 41 has a needle bar 51 driven up and down toward the base cloth 46 at each stitch cycle.
The needle holder 55 is attached to the slit 53 opened in the vertical movement direction and is driven into and out of the base cloth by the air cylinder 54 mounted on the upper side.
It is attached to. For this reason, all the needles 41
The needle bar 51 is inserted into the base cloth 46 according to the elevating movement of the needle bar 51.
The needle 41a attached to the needle holder 55a extruded from is inserted deeper than the other needles 41b. The loop looper 52 is set so as to reciprocate toward the needle 41 at a position closer to the base cloth 46 than the cut looper 42, that is, at a shallow position below the base cloth 46. For this reason, the needle 41a inserted deeply can cooperate with the cut looper 42, and the other needle 41b
Only work with. When the needle bar 51 descends and reaches the lowest point, the needle 41b attached to the needle holder 55b that is not pushed out of the slit 53 by the air cylinder 54 loops above the cut looper 42. It is set to reach a level that cooperates with the looper 52.

The inventor of the present invention draws in different colors of pile yarns into a set of a plurality of adjacent needles arranged in the width direction of the tufted machine, and stops the base fabric without transporting the base fabric for several stitch cycles. In the meantime, the needle is moved by one needle gauge (G) every one stitch cycle in the width direction of the tufted machine, and each looper arranged with the same gauge H as the needle gauge G in the width direction of the tufted machine has a different color. A tufted machine (hereinafter referred to as a tufted machine) that selectively inserts a needle into a base cloth to draw a variety of designs and patterns on a pile surface so as to receive a pile yarn loop from one of a plurality of needles into which a pile yarn is drawn. , Color tech.) Has been developed and disclosed in Japanese Patent Publication No. 6-35701 (JP-A-3-294561). The selection device can utilize a needle selection device of the prior invention.

FIG. 3 shows a tufted machine according to the invention of the prior application, in which a large number of needles and loopers arranged in a constant gauge in the machine width direction, and each needle are selectively inserted into the base fabric for each stitch cycle. A needle selection device, a pattern control device for giving an instruction to the needle selection device to selectively insert the needle into the base fabric, and stopping continuously for several stitch cycles; An intermittent base cloth transporting device that periodically repeats feeding in a direction perpendicular to the machine width, and a shift device that moves a needle or a base fabric between adjacent needles or loopers in the machine width direction by an integral multiple of a gauge. The needle selection device is mounted on left and right vertical sliders 12 slidably supported horizontally by upper and lower horizontal shafts 11 protruding in the machine width direction from left and right members of the tufted machine. The needle shift device includes an arc cam 13 and a horizontal slider 14 driven by the cam 13 in a horizontal direction. The horizontal slider 14 is joined to the vertical slider 12, and the needle selector is reciprocated in the machine width direction by the arc cam 13. The arc cam 13 is driven by a main shaft (not shown) and makes one rotation every eight stitch cycles. Around the periphery of the arc cam 13, the needle selection device is advanced by one gauge for each of the first three stitch cycles during one rotation, and the needle selection device is moved left and right during the next one stitch cycle. The needle selection device is retracted by one gauge for each of the next three stitch cycles, and the needle selection device is again required to be stopped during the last one stitch cycle. Cam ridges corresponding to eight stitch cycles are formed. The servo motor 15 is employed in the intermittent base cloth transport device. Reference numeral 16 denotes a sensor that detects the position of the needle selection device and transmits the position to the servo motor 15. Servo motor 1
5 receives the instruction signal from the sensor 16 and keeps the base cloth delivery roll 17 and the take-up roll (not shown) in a stopped state without driving during each stitch cycle in which the needle selection device moves, and performs needle selection. The apparatus is rotationally driven during one stitch cycle in which the apparatus stops. The needle selection device includes a needle bar 18, a stopper bar 19, a guide bar 20,
21, a needle holder 23, an air cylinder 24, and a pattern control device 25. The needle holders 23 are fitted in gaps between the needle bar 18 and the guide bars 20, 21 and 22, and are arranged in a large number in the machine width direction. Between each needle holder, a needle guide bar 18 or a guide bar 20 is provided.
A constant gauge is maintained by vertical guide grooves 26 provided on the contact surfaces of the needle holders 21 and 22 with the needle holder 23. The left and right ends of the needle guide bar 18 are joined to the upper side of a vertical slider 28 that moves up and down along a vertical shaft 27 attached to the vertical slider 12. The left and right ends of the guide bars 21 and 22 are joined to the lower side of the vertical slider 28, so that the needle guide bar 18 and the guide bars 21 and 22 can move up and down. The left and right ends of the guide bar 20 and the stopper bar 19 are joined to an angle 29 attached to the vertical slider 12 and do not move up and down. Between the left and right angles 29, in addition to the guide bar 20 and the stopper 19, a yarn guide 31
32 and 33 are also connected. The lower end of the needle holder 23 is provided with a coil spring 30
Are linked by 34 and 35 are holes provided in the guide bar, and the coil spring 30
It passes through 4.35. The upper end of the needle guide bar 18 is provided with a bracket 37 of a push rod 36 which moves up and down.
Are fitted in the dovetail groove 38 so as to be movable in the machine width direction. For this reason, the push rod 36 is connected to the needle guide bar 18.
And the guide bars 21 and 22 are reciprocated up and down, but do not hinder the movement of the needle selecting device in the machine width direction.
The air cylinder 24 is attached to the needle guide bar 18, and receives an instruction signal from the pattern control device 25, and cuts the head 39 at the distal end into the notch 4 of the needle holder 23.
Intrude toward 0. The needle holder 23 is connected to the needle guide bar 18 via the head 39 inserted in the notch 40, and inserts the needle 41 gripped at its lower end into the base cloth 46. 42 is a cut looper for receiving the pile yarn loop from the needle, 43
Is a knife for cutting a pile thread loop into a cut pile in cooperation with a looper. Reference numeral 44 denotes a sensor that detects the position of the needle selection device and transmits the detected position to the pattern control device. The pattern controller 25 includes a sensor 44
Thus, the needle selection position is confirmed, and an instruction signal corresponding to the pattern 45 is transmitted to a predetermined air cylinder 24. The base fabric 46 is stopped by the servo motor 15, the base fabric delivery roll 17, and the take-up roll without being transported for three stitch cycles, and is sent out during the next one stitch cycle. Then, the needle 41 gripped by the needle selecting device moves in the machine width direction by one gauge every three stitch cycles in which the base cloth 46 is stopped. The base fabric is stopped at a predetermined position for several stitch cycles within a certain period, and during each stitch cycle during the stop, the needle is connected to the gauge between the needle or the looper adjacent in the machine width direction. Move by integer multiples.
Thus, if all the needles are to be inserted into the backing material during all stitch cycles, each cut looper will be one of several needles in position to move and cooperate. However, in the prior invention, whether or not the needle is inserted into the base fabric is selected in each stitch cycle. In one cycle, all the loopers receive one pile thread loop from any one of the needles, respectively. If the colors of the pile yarns carried by several needles to be changed are respectively changed, one of these different kinds of pile yarns can be used.
Only one will be received by its corresponding one looper. For this reason, in the prior invention, a variety of color-coded patterns of the different kinds of pile yarns are tufted carpet according to which of the different kinds of pile yarns each looper receives and forms a pile. Will be reproduced on the pile surface.

The present invention (Claim 2) can also be implemented by using the needle selecting device of the prior application as an elevating / lowering selecting device. That is, a frame that supports the entire needle selecting device including the needle guide bar 18, the stopper bar 19, the guide bars 20, 21, 22, the needle holder 23, and the air cylinder 24, that is, the vertical slider 12 in FIG. At the same time, the needle which is not selected by the pattern control device 25 and is driven up and down so as to be inserted into the base cloth can be implemented. However, in this case, in one stitch cycle, the pile yarn passed through all the needles is inserted into the base fabric to form a pile. It cannot be reproduced.

FIG. 2 shows a specific example used in the present invention without deteriorating the function of drawing various patterns of the needle selection device of the prior application.
Notches 40a and 40b are provided at two upper and lower portions. On the needle guide bar 18, two heads 39a and 39b that engage with the notches 40a and 40b at the upper and lower portions of each one needle holder 23 are attached at two upper and lower positions. The heads 39a and 39b are driven by air cylinders 24a and 24b, respectively, and are moved toward the needle holder side (23) by the pattern control device (2).
According to the instruction from 5), it appears selectively in each stitch cycle. The upper head 39a and the upper notch 40a are set to face each other when the needle guide bar 18 reaches the uppermost point and the upper end of the needle holder 23 hits the stopper bar 19 and stops, and the lower notch 40b is In the stopped state, it is set to be located below the lower head 39b.

Therefore, when the upper head 39a is pushed into the air cylinder 24a, it immediately engages with the upper notch 40a, the needle 41a descends and is inserted deeply into the base cloth 46, and the cut looper 42 is inserted. It becomes possible to cooperate with. On the other hand, when the lower head 39b is pushed out to the air cylinder 24b, the lower head 39b together with the needle guide bar 18 is lowered by a fixed distance, that is, by an interval between the upper notch 40a and the lower notch 40b. The lower head 39b engages with the lower notch 40b to lower the needle 41b. In this case, the insertion depth of the needle 41b into the base cloth is reduced by the amount by which the needle guide bar 18 is lowered until the lower head 39b engages with the lower notch 40b. Therefore, when the lower head 39b is pushed out by the air cylinder 24b, the needle 41b can cooperate only with the upper loop looper 52. The upper and lower heads 39a and 39b are both air cylinders 40a and 40b.
b, the needle holder 23 does not engage with the needle guide bar 18 and thus the needle 41
Is not inserted into the base fabric. Thus, the present invention (claim 3)
According to this, even if the form of the pile is selected as a cut pile or a loop pile, various patterns are drawn on the pile surface as in the prior invention.

[0020]

According to the present invention, the two types of loopers, the cut looper 42 and the loop looper 52, cooperate with one needle 41 so that the loop looper 52 cooperates above the cut looper 42, and the cut looper 42 is set to cooperate below the loop looper 52, the one needle 41 cooperating only with the loop looper 52 or cooperating with the cut looper 42.
Each stitch cycle is driven by changing the insertion depth into the base fabric.

As a result, when the one needle 41b cooperates only with the loop looper 52, the loop pile 47 is implanted. On the other hand, when the one needle 41a is inserted deeply and cooperates with both the loop looper 52 and the cut looper 42, the lower end of the pile yarn loop 50 formed by the pile yarn 49 inserted into the base fabric is located on the lower side. Although the loop looper 52 is hooked on the cut looper 42, the lower end of the loop looper 52 is simply pushed into the middle of a pile thread loop 50 in which the lower end is hooked on the cut looper 42 and the upper end is locked on the base cloth 46. And
When the loop looper 52 retreats to move to the operation of the next stitch cycle, the loop looper 52 comes out of the pile thread loop 50, and the pile thread loop 50 remains stuck on the cut looper 42.
Cut pile 48 by the shearing action of
Will be formed. Thus, the loop pile 47 and the cut pile 48 are selectively implanted by one needle.

In the present invention, the loop pile 47 is formed by cutting the loop pile 47 with its tip directed in the opposite direction to the transport direction of the base cloth.
Since the pile yarn loop 50 is formed very naturally from the loop looper 52 for the level loop pile fabric with the tip directed in the transport direction of the base fabric, not by the looper,
Even when the loop pile 47 is formed continuously, the pile lengths are evenly arranged, a pattern is drawn by the cut pile and the loop pile, and a tufted pile cloth having a smooth and beautiful loop pile surface is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a tufted machine according to the present invention.

FIG. 2 is a perspective view of a main part of the tufted machine according to the present invention.

FIG. 3 is a perspective view of a main part of a conventional tufted machine.

[Description of Signs] 11 Horizontal shaft 12 Vertical slider 13 Arc cam 14 Horizontal slider 15 Servo motor 16 Sensor 17 Base fabric delivery roll 18 Needle guide bar 19 Stopper bar 20 ・ 21 ・ 22 Guide bar 23 Needle holder 24 Air cylinder 25 Pattern system Defense device 26 Vertical guide groove 27 Vertical shaft 28 Vertical slider 29 Angle 30 Coil spring 31 ・ 32 ・ 33 Yarn guide 34 ・ 35 Hole 36 Push rod 37 Bracket 38 Dove groove 39 Head 40 Notch 41 Needle 42 Cut looper 43 Knife 44 Sensor 45 Pattern 46 Base cloth 47 Loop pile 48 Cut pile 49 Pile thread 50 Pile thread loop 51 Needle bar 52 Loop looper 53 Slit 54 Ah cylinder 55 needle holder

Claims (3)

[Claims] 1. A loop looper having a tip cooperating with one needle and having a tip directed in the direction of transport of the base cloth, and a cut looper having a tip directed in a direction opposite to the transport direction of the base cloth. In addition, the tip of the loop looper is set at a position closer to the base cloth than the tip of the cut looper, and an insertion depth adjusting device that adjusts the elevating movement distance of the needle inserted into the base cloth every stitch cycle is provided. Tufted machine. 2. A loop looper having a tip cooperating with one needle and having a tip directed in the direction of transport of the base cloth and a cut looper having a tip directed in a direction opposite to the transport direction of the base cloth. The tip of the loop looper is set closer to the base cloth than the end of the cut looper, and the needle bar that moves up and down toward the base cloth is mounted so that the needle can move up and down toward the base cloth. A tufted machine including a lifting / lowering selecting device that selectively drives a needle up and down in each stitch cycle from a needle bar to a base cloth. 3. A loop looper having a tip cooperating with one needle and having a tip directed in the direction of transport of the base cloth and a cut looper having a tip directed in a direction opposite to the transport direction of the base cloth. The loop looper tip is set closer to the base fabric than the cut looper tip, and the needle bar is attached to a guide bar extending in the machine width direction, and a number of needle holders are attached to the base fabric so as to be able to move up and down. The needle is attached with the tip facing the base cloth, the needle guide is driven up and down along the needle holder toward the base cloth, and the needle guide bar and the needle holder are placed at different points in the vertical direction. Two sets of male and female engaging portions are provided correspondingly to both sexes.
A tufted machine including an engagement / disengagement selection device that selectively engages / disengages a set of engagement portions for each stitch cycle.