JPS63152455A - Knitted fabric forming apparatus for testing yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (1) Field of Application The present invention relates to a knitting device for seamless knitting yarn testing used in dyeing performance tests, etc. The present invention relates to a knitting device for yarn testing of seamless knitting used in dyeing performance tests. The present invention relates to a knitted fabric making device for yarn testing that can measure yarn testing.

(2) Prior Art Conventionally, yarn tests on interlaced yarns to which interlacing has been applied have been carried out as follows. First, in order to inspect the number of interlaces, which is an important aspect of yarn quality, an interlace number inspection worker carries a product trolley carrying interlace yarn pirns to the front of an interlace number measuring device and inspects each interlace yarn pirn one by one. Measure the number of interlaces. After the measurement of the number of interlaces is completed, the seamless knitting operator then transports the product to the seamless knitting process, which is a pretreatment for testing dyeing performance, etc., and here the interlace yarns of each interlace yarn pirn are seamlessly knitted. A knitted fabric for yarn testing was created by seamless knitting on a machine.

(3) Problems to be solved by the invention As explained above, quality control of interlaced yarns is carried out through two processes: the interlacing number inspection process and the seamless knitting process which is a pre-treatment for dyeing performance inspection. Also, the interlace inspection process, seamless 1
As for tiI, one inspection operator is required for each inspection, resulting in inefficient work.

(4) Means for solving the problem In view of the current problem, the present inventor combined these two processes into one process, eliminated the work of transporting the interlace yarn pirn between processes, and also measured the number of interlaces. We have conducted extensive research with the aim of creating a knitted fabric creation device for yarn testing that enables a single inspection worker to perform two tasks: seamless knitting, which is a pre-processing process for determining dyeing performance, and streamlines inspection work. As a result, the present invention was achieved.

Specifically, the apparatus for measuring the number of interlaces of a yarn, which the present inventors had previously proposed in Japanese Patent Publication No. 59-45782, Japanese Patent Publication No. 59-45783, etc. A non-destructive device for measuring the number of interlaces that continuously measures the number of interlaces (degree of entanglement) in the yarn by causing the yarn to temporarily change shape by running at a predetermined speed while in contact with the yarn. As a result of focusing on the measurement, we found that this measurement had no effect on the dyeing performance of the yarn if the tension was set to an appropriate value.
A tension buffer device such as a dancer arm or dancer roller that can measure the linear speed of a seamless knitting machine without any problems and absorbs yarn loosening caused by sudden speed fluctuations between the interlace number measuring device and the seamless knitting machine. It was discovered that stable continuous operation could be ensured by arranging the

That is, the present invention provides a knitted fabric making device for yarn testing that seamlessly knits the yarn to be tested to create a knitted fabric for yarn testing, in which the yarn is brought into contact with a splicing member under a predetermined tension and is run at a predetermined measuring speed. an interlace number measuring means for causing a temporary shape change in the yarn and continuously measuring the number of interlaces in the yarn based on the shape change; It is equipped with a seamless knitting means that continuously knits seamlessly, and a tension buffer means that absorbs fluctuations in the yarn provided between the interlace number measuring section and the seamless knitting section, and measures the number of interlaces in the yarn. This is a knitted fabric producing device for yarn testing, characterized in that it forms a knitted fabric for yarn testing.

The details of the present invention will be explained below using examples.

(5) Embodiment FIG. 1 is an explanatory diagram showing the structure of an embodiment of the present invention, and FIG. 2 is a graph of the yarn speed operation pattern of the embodiment.

1 is a product cart, 2 and 3 are pirns of interlaced yarn loaded on the product cart 1, and Y is the yarn.

No. 10 is the aforementioned Japanese Patent Publication No. 59-45, which allows the number of interlaces to be measured without impairing the yarn quality (mainly dyeing performance) of yarn Y.
This interlace number measuring means has the same structure as those in Japanese Patent Publication No. 782 and Japanese Patent Publication No. 59-45783, and only the main part thereof is shown in the figure. 20 in the figure is a detection part of the intertwined part of yarn Y,
It consists of a welding member 21 that causes a temporary shape change in the yarn Y, and a photosensor (not shown) that detects the shape change. In the figure, 12 is a known rotary tension adjuster using a permanent magnet to apply a predetermined tension to the yarn Y necessary for measuring the number of interlaces, and 13 is a take-up device for cutting off the tension on the yarn Y. Thread take-up and feed roller 1 with the feed mechanism
3a, a separate roller 13b, and a capstan roller 13c whose surface is in pressure contact with the yarn take-up and feed roller i3a. Reference numeral 11 in the figure is an AC servo motor 14 that drives the yarn take-up and feed roller 13a, and is driven by the follow-up control section 50 described above.

The interlace number measuring means 10 has the above-described structure, and the yarn Y is controlled by the tension adjuster 12. A predetermined tension is applied by the take-up and delivery mechanism 13 via the detection unit 20.

It is picked up and sent out at a predetermined speed. In this process, the detection unit 20 detects the number of interlaces of yarn Y.
It is measured in the same manner as in Japanese Patent No. 45782.

30 is a seamless knitting means for seamlessly knitting yarn Y to make a knitted fabric for yarn testing, and a commercially available seamless knitting machine can be applied as is. In this example, a seamless knitting machine manufactured by Koike Machinery Co., Ltd. was used. In addition, only the driving part related to the present invention is shown in the figure. 31 in the figure is an induction motor that drives the seamless knitting machine 30.

40 is a soft start in which the induction electric motor tlA31 is gradually increased in speed at a predetermined slope and gently started up, as shown in Fig. 2, low-speed rotation in steady operation, and then gradually decelerated and lowered at a predetermined slope in the same manner as the soft start. This is a linear velocity control section comprising a known inverter capable of performing soft-stop linear velocity control.

The induction motor 31 drives a pulley 32, and the belt 33 transmits the rotation of the pulley 32 to a pulley 34 that drives a lid (not shown) that performs seamless knitting, so that the yarn Y is seamlessly knitted at a predetermined linear speed. , a yarn test knit is formed. Further, 60 in the figure is a tension buffering means provided between the interlacing number measuring means 10 and the seamless knitting means 30 to absorb relaxation of the yarn Y, that is, tension fluctuation due to sudden speed difference between the two. A thread guide 62 can be attached to the tip of the piano wire 61, and fixed thread guides 63.6 are attached to both sides of the thread guide 62.
4, and has a dancer arm configuration in which the base portion of the piano wire 61 is fixed, and the yarn Y is adjusted by changing the measurement speed of the interlace measuring means 10 or the linear speed of the seamless knitting machine 30. The relaxation, that is, the occurrence of tension fluctuations, is absorbed and alleviated by the displacement of the piano wire, and in order for this effect to work, the piano wire 61 is bent as shown in the figure, and the restoring stress of the piano wire 61 is set so as to pull the interlace yarn Y. Ru.

It should be noted that from the viewpoint of response speed, the tension buffering means 60 is preferably a dancer arm type using the elastic wire of this example, but any tension absorbing means 60 may be used as long as it has the ability to absorb loosening of the yarn Y, and a dancer roller or the like may also be used. .

By the way, the follow-up control section 50 that causes the measurement speed of the interlace number measuring means 10 mentioned above to follow the linear speed of the seamless knitting means 30 is configured as follows. That is, 51 in the figure is a linear speed detector consisting of a rotary encoder that detects the rotation speed of the pulley 34 that drives the lid portion of the seamless knitting means 30 in order to detect the linear speed of the seamless knitting means 30. is transmitted and the yarn Y
The linear velocity of is detected. 53 is rotary encoder 5
F/ converts a pulse signal P proportional to the number of rotations of 1 into a linear velocity signal V of the yarn Y of the seamless knitting means 30 of DC voltage.
V (frequency/voltage)] converter. linear velocity signal V
is transmitted to a yarn speed ratio setting device 54 which sets the ratio between the linear speed of the seamless knitting machine 3O-B= and the measurement speed of the interlace number measuring means 10. The linear velocity signal V1 is converted into a measurement speed command signal S by a yarn speed ratio setting device 54 according to a set ratio, and is input to a servo motor driver 55 that drives the AC servo motor 11 of the interlace number measuring means 10.

In this way, the rotational speed of the yarn take-up and delivery roller 13a of the interlace number measuring means 10 (this rotational speed becomes the measurement speed of the interlace number measuring device 10) is tracked (tracked) to the linear velocity of the yarn Y of the seamless knitting means 30. value) is controlled.

70 is a personal computer 71. CRT display 72. A data processing device including a printer 73 performs various calculations necessary for quality control of the interlace number of the interlace yarn Y measured by the interlace number measuring device 10 and the interlace number of the interlace yarn Y measured by the interlace number measuring device 10. Print out the results.

Note that 4 in the figure is a yarn guide that stabilizes the yarn running.

Since 80 is well known, a detailed explanation thereof will be omitted, but a knot detector detects a knot in the interlace yarn Y. When a knot is detected, a knot detection signal is transmitted to the personal computer 71 of the data processing device 70.

Next, the operation of this embodiment will be explained.

The yarn Y of the interlaced yarn cheese 2 loaded on the product cart 1 is moved to the yarn guide 4. After the knot detector 80 is threaded, the interlace number measuring means 10 is threaded. Thereafter, the thread is threaded through the thread guides 62, 63, 64 of the tension buffering device 60, and then the thread is threaded onto the seamless knitting device 30 (the important thing here is that the piano wire 62, 63, 64 of the tension buffering device 60
(Thread the thread so that it bends as shown in the figure.)

After threading has been carried out as described above, the seamless knitting means 30 is rotated by hand to carry out hand-knitting and prepare to start.

Even when the seamless knitting means 30 is hand knitting, it rotates following the knitting speed of the interlace measuring means 10, and the yarn Y is sent out from the interlace measuring means 10. When the seamless knitting means 30 is in the hand knitting state, the piano wire 61 of the tension buffer device 60 is bent as shown in the figure, and the knitting speed and interlace number of the seamless knitting means 30 are measured so that the restoring stress of the piano wire 61 always pulls the yarn Y. Adjust the yarn speed ratio setting ta54 that sets the ratio of the measurement speed of the means 1io (seamless knitting means 30
induction motor 31 and ink-race number measuring means 10 A
This is the setting of the ratio of the rotation speed of the C servo motor 14).

At this point, a dummy knot is tied in the yarn Y between the pirn 1 of the interlace yarn and the interlace number measuring means 10 at the location indicated by the arrow in the figure.

When the pre-operation preparation work is completed, an operation start switch (not shown) is turned on. The induction motor 31 of the seamless knitting means 30 is soft-started by the linear speed control unit 40 according to the speed pattern shown in FIG. 2 so that the set number of times is reached in about 2 seconds (seamless knitting starts slowly). As described above, the rotation speed of the induction motor 30 is detected as a pulse signal P by the knitting speed detector 51, and then
It is converted into a linear velocity signal V by an F/V converter 53. The linear velocity signal {circle around (2)} becomes a speed command signal S for a servo motor driver 55 that drives the AC servo motor 14 of the interlace number measuring means 10 using a yarn speed ratio manual setting device 54 . A.C.
The servo motor 14 rotates according to this speed command signal S. In this way, the measuring speed of the interlace number measuring means 10 is started to follow the knitting speed of the seamless knitting means 30, and a steady state is entered. After the knot detector 80 detects a knot in the yarn Y, there is a predetermined period of time 3 in which the seamless knitting means 30 and the interlace number measuring means 10 reach a steady state in this example.
After about a second has elapsed, the interlace number measuring means 10 starts measuring the number of interlaces and reaches a predetermined yarn length (usually 10
When reaching m), the seamless version ends. This thread length is set by a timer not shown. When seamless knitting of a predetermined yarn length is completed, the induction motor 31 of the seamless knitting means 30 is turned on by an inverter 40 as shown in FIG.
If the AC servo motor 14 of the interlace number measuring means 10 measures the number of interlaces and performs seamless knitting on the seamless yarn pirn 3 by gradually decelerating and making a soft stop for ~4 seconds, the finished interlace yarn Yarn Y device that cuts yarn Y of pirn 2 at the arrow part in the figure between knot detector 80 and interlace yarn pirn 2, and then cuts the yarn end of yarn Y of interlace yarn pirn 3 to be measured. After manually tying the side yarn ends, turn on the start switch again, measure the number of interlaces, and perform seamless knitting. In this way, when the formation of a yarn test knitted fabric consisting of yarns Y of a predetermined number of interlaced yarn pirns and the measurement of the number of interlaces are completed, the data processing device 70 performs various calculations necessary for quality control. The result is sent to the printer 73.

In the above explanation, it is necessary to temporarily stop the apparatus according to the embodiment of the present invention when switching from interlace yarn pirn 2 to interlace yarn pirn 3, but if the following explanation is followed, this interlace yarn pirn can be changed without stopping the apparatus. It becomes possible to switch from 2 to 3 to interlace yarn pirn 3.

A storage-type yarn feeder (for example, AKTI from Sweden) is installed between the interlaced yarn pirns 2, 3 and the yarn guide 4.
Install EBOLAGET-IRO) SFS6).

The storage type yarn feeding device winds the yarn Y of the interlaced yarn pirn 2 onto the spool at high speed, and stops after winding a predetermined amount of yarn Y, and the yarn Y stored in the spool is unwound to reduce the amount of remaining yarn. When the amount decreases, winding onto the spool is automatically started (the storage type yarn feeding device can feed the wound yarn onto the spool to the interlace number measuring means 10 while winding the yarn Y onto the spool). During the period when the storage-type yarn feeding device stops winding the yarn Y, the yarn Y stored in the spool is supplied to the interlace number measuring means 10.

After the measurement of the number of interlaces and seamless knitting are completed, while the storage-type yarn feeder stops winding the yarn Y of the interlace yarn pirn 2, the yarn is transferred between the storage-type yarn feeder and the interlace yarn 2. After cutting Y, the number of interlaces is measured and the end of yarn Y of interlace yarn pirn 3 for seamless knitting is manually tied to switch the interlace yarn pirn. In this way, the interlace number measurement and seamless knitting of a large number of interlace yarn pirns can be performed without stopping the apparatus.

(6) Effects of the Invention As clarified by the above explanation, the present invention provides seamless pre-treatment for dyeing performance testing by continuously supplying the interlace yarn measured by the interlace number measuring means to a seamless knitting machine. It forms the knitted fabric,
There is no need to transport the interlace yarn to be inspected between the interlace number inspection process and the seamless knitting process, improving work efficiency.In addition, one inspection worker is assigned to each of the interlace number measuring means and the seamless knitting means, making it possible to measure the interlace number. Previously, these two 15-in-1 tasks can now be performed by a single inspection worker, streamlining the number of inspection workers, and the effect is extremely large. Moreover, according to the present invention, the correspondence between the interlace number measurement result and the dyeing evaluation can be ensured, and a great effect can be obtained in terms of quality control.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of an embodiment according to the present invention, and FIG. 2 is a graph of the yarn speed operation pattern of the embodiment. Y: Yarn 1: Product trolley 2.3: Interlaced yarn pirn 10: Interlace number measuring means 20: Interlaced portion detection section 30: Seamless knitting means 40: Linear speed control section 50: Follow-up control section 60: Yarn tension shock absorber

Claims (1)

[Claims] 1. In a yarn testing knitted fabric making device that seamlessly knits the yarn to be tested to create a yarn testing knitted fabric, the yarn is brought into contact with a splicing member under a predetermined tension at a predetermined measuring speed. an interlace number measuring means for causing a temporary change in the shape of the yarn by causing the yarn to run on the yarn, and continuously measuring the number of interlaces in the yarn based on the shape change; It is equipped with a seamless knitting means that seamlessly knits continuously at a high speed, and a tension buffer means that absorbs fluctuations in the yarn provided between the interlace number measuring section and the seamless knitting section, and measures the number of interlaces in the yarn. 1. A knitted fabric making device for yarn testing, characterized in that it forms a knitted fabric for yarn testing. 2. The knitted fabric making device for yarn testing according to claim 1, wherein the interlace number measuring means has a follow-up control section that causes its measurement speed to follow the knitting speed of the seamless knitting means. 3. The knitted fabric making device for yarn testing according to claim 1 or 2, wherein the seamless knitting means has a knitting speed control section that performs soft start and soft stop.