JP2001003247A - Method and system for controlling knitting yarn quantity for flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject method and system intended for obtaining a knitted item without affecting knitting operation and the corresponding knitted fabric even in the case of making the knitted fabric with a diversified pattern through controlling knitting yarn quantities in knitting sections by knitting conditions previously specified regarding respective courses to control the knitting yarn quantities in a flat knitting machine. SOLUTION: This method comprises controlling knitting yarn quantities in a carriageless-type flat knitting machine 10 by controlling knitting yarn quantities in knitting sections by knitting conditions previously specified regarding respective courses including a measuring encoder 24 and a measuring counter 26; Further, it is preferable that the subject control system for the flat knitting machine 10 comprises a means for setting knitting conditions for each of the knitting sections in the respective courses and a means for specifying for each of the knitting conditions whether knitting yarn quantities are to be controlled or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for controlling a yarn amount in a carriageless flat knitting machine, and more particularly to a yarn amount suitable for knitting a knitted fabric in which a plurality of knitting portions are mixed under different knitting conditions. And a method for controlling the same.

[0002]

2. Description of the Related Art In a flat knitting machine, in order to produce a large amount of knitted fabric, a sample knitted fabric is knitted, and the length of a knitting yarn (sample yarn length) used at that time is determined. Conventionally, there has been proposed a technique for controlling the amount of used knitting yarn (consumed yarn length) at the time of actual knitting (at the time of actual knitting), thereby making the quality of the knitted fabric uniform (for example, Japanese Patent Application Laid-Open No. Hei 6 (1996) -1994). -25953, JP-A-9-2730
No. 52).

In the control of the amount of knitting yarn, first, during knitting of a sample knitted fabric, the amount of knitting yarn (yarn length) to be used is measured in course units, and the lengths are integrated. Is a predetermined control unit length (for example, 30 m
) Is stored as a reference control section, and an integrated value is stored as a sample yarn length for each control section.

Next, when knitting an actual knitted fabric, the amount of knitting yarn (yarn length) consumed is measured in course units in the same manner as described above, and the measured lengths are integrated and correspond to the reference control section. The integrated value of the course is determined as the consumed yarn length. Then, this consumed yarn length is compared with the sample yarn length of the corresponding control section of the sample knitted fabric, and when the comparison result exceeds a predetermined range, the pull-in of the knitting yarn in knitting of the next control section is performed based on the comparison result. Control the amount (degree).

[0005] In such knitting yarn amount control, conventionally, the second change control is performed only in course units. That is, only the courses of all courses in the next control section are changed or the courses are changed every other course.

[0006]

According to this conventional technique, when forming a transition, such as a boundary portion of an intarsia, a cable pattern, etc., which is larger than the others so as to be easily transferred, the transition is formed. Since control (change) is performed even for the first time, transfer failure is likely to occur, and knitting errors may be caused.

Also, in jacquard knitting, the degree of the pattern portion differs between the case where each yarn is knitted with only one needle bed and the case where a part of the yarn is knitted with the other needle bed. Even with the same knitting of one course, the consumption of the knitting yarn is different. For this reason, in the related art, since the control including the pattern portion is performed based on the comparison result of the portion without the pattern, accurate control cannot be performed, and the balance of the position, size, etc. of the pattern decreases. . The same applies to knitting of a knitted fabric in which a plurality of pattern portions having different degrees are mixed, such as a braided structure.

Further, according to the prior art, in the knitting of a knitted fabric in which a plurality of handle portions supplied from different carriers (yarn feed ports) and having different yarn types are mixed, these handle portions are also to be controlled. The balance of the pattern position, size, etc. may be lost due to the difference in the consumption of the knitting yarn and the difference in the physical properties of the yarn.

Therefore, in controlling the amount of knitting yarns used in a flat knitting machine in a flat knitting machine, it is important to control the knitting and the knitted fabric without adversely affecting the knitting even when knitting a knitted fabric of various patterns.

[0010]

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for controlling the amount of yarn in a carriageless flat knitting machine which can solve the above-mentioned problems.

The knitting yarn amount control method according to the present invention includes controlling the knitting yarn amount of a knitting portion under knitting conditions specified in advance for each course.

The knitting yarn amount control device according to the present invention includes means for setting knitting conditions for each knitting portion in each course and means for designating whether or not to control the knitting yarn amount for each knitting condition. Including.

In a preferred embodiment, the control is performed, for example, by knitting a sample knitted fabric in advance, obtaining the amount of yarn (yarn length) used at that time as a sample yarn length for each control section, and storing it. In knitting the actual knitted fabric, the amount (yarn length) of the knitting yarn used for knitting the control section (course) corresponding to each control section of the sample knitted fabric is determined as the consumed yarn length, and the consumed yarn length is sampled. This is compared with the sample yarn length of the corresponding control section of the knitted fabric, and when the comparison result exceeds a predetermined range, the knitting of the next control section is performed by correcting the degree of the specified knitting condition.

As described above, if the amount of knitting yarn at the knitting portion is controlled according to the specified knitting conditions, when knitting a knitted fabric having various patterns, the amount of knitting yarn within one course is reduced, not in units of course. Can be mixed with the knitting part that does not control the knitting, and there is no possibility that the knitting and the knitted fabric will be adversely affected.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.
Is a carriageless flat knitting machine capable of designating a stitch for each stitch, and can be used for knitting a knitted fabric in which a plurality of knitting portions under different knitting conditions are mixed. A carriageless flat knitting machine can be defined as a flat knitting machine having an actuator such as a linear motor for moving the needle, instead of having a cam for moving the needle and a carriage for moving the cam.

The knitting condition can be, for example, one of a stitch code specifying the type of stitch in the knitting data and a carrier number specifying the carrier to be used. And a different carrier number. In the following description, the time code is a control target for distinguishing control.

The flat knitting machine 10 advances and retreats (reciprocates) a plurality of knitting needles 12 by needle motors 14 provided for each knitting needle.
Then, a plurality of carriers 16 for yarn supply are reciprocated in the left-right direction by a carrier motor 18 provided for each carrier to supply a knitting yarn to the knitting needles 12.
Knit 0.

The needle motor 14 is an actuator such as a linear motor. In contrast, the carrier motor 18
Is a general motor whose position can be controlled like a servomotor. Needle motor 14 and carrier motor 18 are controlled by carrier / needle controller 22.

The amount of the knitting yarn supplied to the knitting needle 12 (yarn supply amount = consumed yarn length) is measured by a measuring encoder 24 and a measuring counter 26 for counting the output pulses of each of the carrier numbers.
And is measured by The counter 26 stores the knitting data such as the carrier number during knitting in the carrier / needle controller 22.
And sends the yarn length data for each carrier number to the knitting control unit 2.
8

The display 30 is controlled by a display controller 32. Various knitting data necessary for knitting, various display data to be displayed on the display 30, and various control data used for controlling devices are stored in the knitting control unit 28. The knitting control unit 28 executes the steps shown in FIG. 2 described later.

The knitting data is, as shown in FIG.
An initial setting value indicating the length of the stitch and a carrier number to be used are provided for each stitch code, and whether or not to control the amount of knitting yarn is specified for each stitch code. This knitting data includes the entire knitting pattern for knitting the knitted fabric 20, a part of which is shown in FIG.

In the example shown in FIG.
The stitches corresponding to 0, 35 and 45 are controlled. Thereby, in the knitted fabric of the portion shown in FIG.
The stitches of all stitches in the hatched area are controlled, but the stitches of all stitches in other areas including the inside of the pattern are not controlled. The knitting data can be displayed on the display 30 and is set or specified prior to the actual knitting.

An embodiment in which the amount of knitting yarn is controlled for each stitch code based on the consumed yarn length of the carrier to be used will be described below with reference to FIG. In FIG. 2, the control is based on the consumed yarn length of the carrier having the longest consumed yarn amount among the used carriers for each of the round codes, but the total value of the consumed yarn length of the used carrier for each of the round codes is controlled. May be used as a reference.

Prior to the actual knitting, knitting of the sample knitted fabric is performed. The knitting operation is performed by controlling various devices using various data preset in the knitting control unit 28.

During knitting of the sample knitted fabric, the amount of yarn (yarn length) used for knitting is determined by the encoder 24 and the counter 26.
, And the integrated yarn length for each control section is stored in the memory of the knitting control unit 28 as a sample yarn length. The sample yarn length can be obtained by clearing the count value for each carrier of the counter 26 for each control section.

Prior to knitting of the actual knitted fabric, the knitting control unit 28 searches the knitting data for a carrier number having the longest measurement amount for each time code (step 100).
In step 100, for example, when a plurality of carriers (for example, carrier numbers 1, 3, and 5) are used for knitting a knitted fabric portion of a certain time code, the consumed knitting yarn amount is the longest among the carriers. This can be performed by searching for the carrier number.

Next, whether or not the control is to be controlled or corrected is set for each control code (step 101).

Next, the knitting control section 28 executes step 10
From the results of 0 and 101, a control table as shown in the table of FIG. 3 is created (step 102).

Next, the knitting of the actual knitted fabric is performed by the knitting control unit 28.
(Step 103). During knitting of the actual knitted fabric, yarn amount control is performed for each carrier as follows.

First, the control unit 28 sets the carrier number to a predetermined value (for example, the smallest number among the carrier numbers used) (step 104), and then reduces the consumption of the knitting yarn of the carrier number. Measure (Step 10
5). In this step 105, the amount of yarn (yarn length) used for knitting the actual knitted fabric is measured for each carrier by the encoder 24 and the counter 26 in course units, and the measured values are integrated over several courses. This operation can be executed by storing this integrated value in the memory of the control unit 28 as the integrated yarn length for each carrier.

Next, the knitting control section 28 determines whether or not a predetermined control unit length has been reached (step 106). The control unit length is a predetermined value arbitrarily set in advance, and can be 30 m. Therefore, step 106 can be performed by determining whether or not the integrated yarn length has reached this predetermined value.

If the result of determination in step 106 is that the integrated yarn length has reached the control unit length (Yes), the knitting control unit 28
, The accumulated yarn length at this time is used as the consumed yarn length in this control section, and this consumed yarn length is compared with the sample yarn length in the corresponding control section of the sample knitted fabric. Then, it is determined whether or not the comparison result (the ratio between the two) is outside a predetermined range (step 107). This step 107 can be executed, for example, by determining whether or not the ratio between the consumed yarn length and the reference yarn length has exceeded a threshold having a predetermined range.

If the result of determination in step 107 is outside the predetermined range (Yes), the knitting control unit 28 sets the control table created in step 102 to change the use of the knitting yarn of the carrier number. It is determined whether or not it has been performed (step 108).

As a result of the determination in step 107, if it is set that the stitch should be corrected (Yes), the knitting control unit 28 corrects all the specified stitches in the next control section (step 109). ), And then to step 110.

The knitting control unit 28 also proceeds to step 110 when the result of the determination in steps 106, 107 and 108 is No indicating negative. In step 110, the composition control unit 28 determines that the carrier number is the last number 1
6 is determined (step 110).

The carrier number is not the last number (No)
After adding 1 to the carrier number, the knitting control unit 28 returns to step 105 and performs the above-described processing for the next carrier (step 111). However, if the carrier number is the last number, the composition control unit 28 determines whether the composition has been completed (step 112).

The determination in step 112 may be whether or not knitting of one knitted fabric has been completed, or whether or not knitting of a plurality or a large number of knitted fabrics has been completed.

If the result of determination in step 112 is that processing has not been completed, the knitting control unit 28 returns to step 104. However, if the operation has been completed, the knitting control unit 28 ends all operations.

As a result of the above, the stitch of the designated code is corrected and the amount of yarn used for forming the stitch is controlled. Therefore, when knitting a knitted fabric of various patterns, one stitch is used.
In the course, the degree of controlling the knitting yarn amount and the degree of not controlling the knitting yarn amount can be mixed, so that there is no possibility that the knitting and the knitted fabric are adversely affected.

In the above embodiment, the first coat is used as the knitting condition. However, the carrier number may be used as the knitting condition. Further, although the specific time is used as the knitting portion, the entirety of a plurality of continuous times (times within a predetermined range) may be used as the knitting portion.

The present invention is not limited to the above embodiment, but can be variously modified without departing from the spirit of the present invention.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electric circuit illustrating an embodiment of a flat knitting machine including a yarn amount control device according to the present invention.

FIG. 2 is a flowchart for explaining an embodiment of a knitting yarn amount control method.

FIG. 3 is a diagram showing an embodiment of a screen displayed on a display device.

FIG. 4 is a diagram showing another embodiment of a screen displayed on a display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Flat knitting machine 12 Knitting needle 16 Carrier 20 Knitted fabric 24 Encoder for length measurement

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroki Yamazaki 5-18-18 Nomachi, Kanazawa City, Ishikawa Prefecture Inside Tsuda Koma Kogyo Co., Ltd. (72) Tatsuya Tani 5-18-18 Nomachi Kanazawa City, Ishikawa Prefecture Tsuda F-term in Koma Kogyo Co., Ltd. (Reference) 4L054 AA01 BD07 CA01 CA02 CA03 CA04 CA06 CA08 CA09 CB03 CB04 DA05 NA02 NA03 NA05 NA07

Claims (2)

[Claims] 1. A method of controlling the amount of knitting yarn in a carriageless flat knitting machine, comprising controlling the amount of knitting yarn in a knitting portion according to knitting conditions specified in advance for each course. Quantity control method. 2. A device for controlling the amount of knitting yarn in a carriageless type flat knitting machine, comprising means for setting knitting conditions for each knitting portion in each course, and determining whether or not to control the amount of knitting yarn. Means for controlling the amount of knitting yarn in a flat knitting machine, comprising: means for specifying for each condition.