JPH0136947Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to preventing the pile yarn from coming off from the needle when the tufted raw fabric or base fabric is separated from the tufted machine.

[Conventional technology]

In order to separate the base fabric from the tufted machine, the pile thread must be cut between the needle and the base fabric, but even tufted machines for matte and other narrow tufted products are equipped with a large number of needles. However, it is too complicated to cut the pile threads that can be passed through each of them.

In particular, with a tufting machine for small-width mats, the base fabric that has been tufted in a certain area is separated from the tufting machine, the tufted area is moved, and tufting begins again. It had to be separated, and the separation work was a hindrance to production efficiency.

Therefore, the inventor of the present invention proposed a method for a tufted machine exclusively for cut piles, in which the needle is stopped and only the looper and knife are driven to automatically cut the pile yarn loop that the looper locks, and a method for a tufted machine exclusively for loop piles, to automatically cut the pile thread loop. He invented a method for automatically cutting by attaching a knife that cooperates with the looper only occasionally.
-41363) and Japanese Patent Application No. 34413 (1982)
-191558 Publication) has been applied for a patent.

[Problem that the invention attempts to solve]

By the way, in the mat tufting machine to which the prior invention is applied, the amount (length) of pile yarn fed to the needle for each stitch is constant, so the amount of pile yarn pulled from the cone by the needle and looper is constant. A so-called passive delivery method is used in which the pile threads are fed in such a way that they are drawn out, so that the pile threads can also be pulled out by hand. Therefore, when cutting the base fabric from the tufting machine, in order to prevent the cut end of the pile yarn from coming off the needle, the pile yarn is pulled out from the cone by hand before cutting. It is also possible to lengthen the cut ends of the pile threads extending from the holes.

However, the inventor of this invention submitted a patent application in 1983-160022.
Publication No. 63-64796) and No. 160023 (Publication No. 63-64797)
In a tufted machine equipped with a high/low pile patterning device, such as the one disclosed in the Japanese Patent Publication, it is necessary to selectively change the amount of pile yarn supplied for each stitch. Therefore, it is not possible to manually pull out the pile yarn in order to feed the needle with excess pile yarn during separation.

[Purpose of invention]

Therefore, the present invention aims to improve the operating efficiency of the tufting machine by applying the automatic cutting device according to the invention of the earlier application to a tufting machine equipped with a high-low pile patterning device.

[Structure of the idea]

That is, the tufted machine 16 according to the present invention has high-speed rotating rolls 1 arranged in parallel and driven by a motor.
1 and the low-speed rotation roll 12, and is in contact with the selected one of the rolls 11 or 12 and is rotationally driven to supply the pile yarn 14 to the needle 13. The high-speed rotating roll 1 is equipped with a plurality of
One-way clutches 21 and 22 driven by swinging rods 19 and 20 are respectively attached to the shafts 17 and 18 of the low-speed rotation roll 12, and the swinging rods 19 and 20 are connected so as to be interlocked. It is characterized by the presence of

Here, the term "one-way clutch" refers to the movable joint (in this invention, the swinging rods 19 and 20 correspond to this).
Although it reciprocates, it is an element driven by the driven joint (driver joint), and in this invention, the shafts 17 and 18
is applicable. ) is a transmission mechanism that moves only in one direction, and specific examples include the ball clutch and ratchet shown in the embodiment.

[Effect of idea]

The high-speed rotating roll and low-speed rotating roll in this invention are driven by a motor and rotate continuously during tufting, and selectively drive the rotating body that comes into contact with them to rotate by friction, and the speed increases depending on which of them the rotating body contacts. Alternatively, it rotates at low speed to supply a large amount or small amount of pile yarn to the needle, thereby creating a desired pattern by creating height differences in the pile.

When the needle is stopped to interrupt tufting and separate the base fabric from the tufting, according to the conventional technology, the pile yarn adheres to the stopped rotating body and cannot be easily pulled out, but in the present invention, the needle is stopped. In the stopped state, the swinging rod is reciprocated to rotate the high-speed rotation roll and the low-speed rotation roll, which turns the rotating body and pulls out the amount of pile yarn necessary for separation to the needle side, so the pile yarn can be easily removed. The thread cut end does not come off from the needle, and therefore the automatic cutting device according to Japanese Patent Application No. 176147/1982 and No. 34413/1988 can be applied.

As described above, according to the present invention, the separation of the tufted raw fabric or base fabric in a tufted machine equipped with a high-low pile pattern generating device or a pile yarn active feeding device is automated, and especially in tufted fabrics for mats where such separation is frequently performed. This increases the operating efficiency of the machine and has practical effects.

〔Example〕

The figure shows an embodiment of the present invention applied to the tufted machine according to Utility Application No. 160022 and 160023 of 1982. First, Figure 1 shows the entire tufted machine, and 23 is a needle bar. Eight needles 13 are arranged horizontally in a row, and the pile yarn 14 sent out from the rotating body 15 is passed through the yarn guide 24.
It is drawn out to each needle 13 through.

Reference numeral 25 denotes a press bed for pressing the base fabric 26 against the table, and a through hole 27 is bored at the position where each needle 13 operates.

28 is a piston rod that moves the needle bar 23 up and down.

Reference numeral 29 denotes a flywheel of the main shaft which is rotationally driven by a motor via a belt 30, and the high-speed rotating roll 11, low-speed rotating roll 12, needle 13 and looper 31 (Fig. 2) are each rotated via the main shaft. It seems like they are linked.

Reference numerals 32 and 33 designate transmission devices for transmitting power from the main shaft to the high-speed rotating roll 11 and the low-speed rotating roll 12, respectively, each of which has a built-in one-way clutch.

Reference numeral 34 denotes a high-low pile design device, which will be described in detail with reference to FIGS. Rotationally supported.

37 and 38 are yarn guides bored in the angle 39, and the pile yarn 14 is connected to the yarn guide 3.
7, the yarn is wound approximately once around the circumferential surface of the rotating body 15, and then sent out from the yarn guide 38.

The lower end of the swinging rod 36 is connected to a piston rod 41 from which an air cylinder 40 retracts.
The air cylinder 40 receives instructions from the indicating device 42 to selectively move the piston rod 41 in and out.
As a result, the swinging rod 36 moves to either the high-speed rotating roll 11 or the low-speed rotating roll 12, and thus the rotating body 15 is rotationally driven in contact with the high-speed rotating roll 11 or the low-speed rotating roll 12, and the pile yarn 1
Send out 4.

V-shaped grooves are provided on the circumferential surfaces of the high-speed rotating roll 11 and the low-speed rotating roll 12 at the locations where the flanges of the rotating body 15 fit, thereby preventing slippage between them and the rotating body 15. ing.

Swing rods 19, 20 and one-way clutch 21,
22 is mounted on the opposite side to the transmissions 32 and 33.

A ball clutch is adopted as the one-way clutches 21 and 22.

That is, the one-way clutch 22 is connected to the swinging rod 20
It consists of a cylindrical body 44 joined to the shaft 18 with a key 45 and a fitting body 46 that slides in close contact with the inner periphery of the cylindrical body 44.The outer periphery of the fitting body 46 has a cross section 47 along the radial direction. and cross section 4 perpendicular to it
There is a notched groove 49 formed by 8, and a ball 50 is loosely fitted into a gap formed between this notched groove 49 and the inner circumference of the cylindrical body 44.

In FIG. 4, when the cylindrical body 44 rotates clockwise together with the swinging rod 19, the ball 50 moves toward the cross section 47 with a wide gap, fits loosely in the gap, and becomes free. , the rotation of the cylindrical body 44 is not transmitted to the fitting body 46 and the shaft 18 does not rotate. on the other hand,
When the cylindrical body 44 rotates counterclockwise, the ball 50 moves in a direction away from the cross section 47 and is sandwiched between the cross section 48 and the inner circumference of the cylindrical body 44, and the ball 50
acts as a wedge and transmits the rotational movement of the cylindrical body 44 to the fitting body 46, thus causing the shaft 18 to rotate counterclockwise.

The swinging rods 14 and 20 of the one-way clutches 21 and 22 of the high-speed rotating roll 11 and the low-speed rotating roll 12, respectively, are connected to a connecting rod 51,
An air cylinder 5 is attached to one end of one swinging rod 19.
A piston rod 53 that protrudes and retracts from 2 is connected.

Therefore, when the air cylinder 52 is moved in and out by the piston rod 53, the swinging rods 19 and 20 of the two one-way clutches swing simultaneously, so that the shafts 17 and 18 as well as the high and low rotating rolls 11 and 12 are rotated counterclockwise. Swallow.

On the other hand, during the tufting operation, the rotation of both the high and low rotating rolls 11 and 12 does not cause the swing rods 19 and 20 to swing.

As described above, in the tufted machine according to the embodiment, one-way clutches 21 and 22 driven by swinging rods 19 and 20 are mounted on the shafts 17 and 18 of the high-speed rotation roll 11 and the low-speed rotation roll 12, and these swinging rods Since the rollers 19 and 20 are linked together, when the needle 13 is stopped, the air cylinder 52 rotates only the high and low rotation rolls 11 and 12, which rotates the rotating body 15 to tuff the base fabric 26. The pile yarn 14 of the length required for separation from the needle 13 can be sent out to the needle 13 side. Therefore, even if the pile yarn 14 is cut between the needle 13 and the base fabric 26, the cut end will not come out from the needle 13. I can't get away from it.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the tufted machine according to the present invention;
2 is a cross-sectional side view of the main parts of the tufted machine shown in FIG. FIG. 4 is a cross-sectional side view of the one-way clutch in FIGS. 11...High speed rotation roll, 12...Low speed rotation roll, 13...Needle, 14...Pile yarn, 1
5...Rotating body, 16...Tufted machine, 17,1
8... Shaft, 19, 20... Rocking rod, 21,
22... One-way clutch, 23... Needle bar, 24... Yarn guide, 25... Press bed, 26... Base fabric, 27... Through hole, 28...
Piston rod, 29... flywheel, 30... belt, 31... looper, 32, 33... transmission, 34... height/low pile design device, 35... spindle, 36... rocking rod, 37, 38 ... Yarn guide, 39 ... Angle, 40 ... Air cylinder, 41 ... Piston rod, 42 ... Indicator device, 43 ... Groove, 44 ... Cylindrical body, 45 ... Key, 46 ... Fitting body, 47 , 48...cross section, 49
... Notch groove, 50 ... Ball, 51 ... Connecting rod, 52 ... Air cylinder, 53 ... Piston rod.

Claims (1)

[Claims for Utility Model Registration] Selectively reciprocates between a high-speed rotating roll 11 and a low-speed rotating roll 12 that are driven by a motor and arranged in parallel, and the selected one of the rolls 11
Alternatively, in a tufted machine 16 equipped with a plurality of disk-shaped rotating bodies 15 that are in contact with the rollers 12 and are rotationally driven to supply the pile yarn 14 to the needles 13; A tufted machine characterized in that one-way clutches 21 and 22 driven by moving rods 19 and 20 are respectively mounted, and these swing rods 19 and 20 are connected so as to be interlocked.