JP2000064159A - Method of controlling knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the knitting time without increase of the knitting speed. SOLUTION: In this knitting machine control, the maximum pattern length is determined among a plurality of the position control patterns that are used in the period from the start of the movement or the following stop as of the earlier starting yarn feed outlet or the following yarn feed outlet, every time when the yarn feed outlet is shifted. On the basis of the determined maximum pattern length, the running interval is controlled between the earlier starting yarn feed outlet and the following yarn feed outlet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a knitting machine having a plurality of actuators for driving a knitting needle and a plurality of actuators for driving a yarn feeder.

[0002]

A knitting machine having a plurality of knitting needles and a plurality of yarn feeders generally has an actuator such as a linear motor, a servomotor, or a pulse motor for each knitting needle and each yarn feeder. In this type of knitting machine, the knitting needle driving actuator is driven based on a predetermined position control pattern (wave pattern) registered in advance in the knitting machine, and the yarn feeder driving actuators are arranged in the order previously registered in the knitting machine. Are sequentially driven in synchronism with.

In the position control pattern, the horizontal axis represents the running position of the yarn feeder and the vertical axis represents the advance / retreat position of the knitting needle. The position control pattern varies depending on the type of knitting, such as plain knitting, rubber knitting, tuck knitting, and transfer knitting, and the pattern length of the position control pattern also varies depending on the type of knitting and the size of stitches to be formed. Therefore, the position control pattern is preset for each knitting needle and each course according to the type of knitting and the size of the stitches. Each yarn feeder is driven so as to start traveling and then stop traveling for each course during knitting.

Each yarn feeder is driven so that the yarn feeder that has started to move before the movement of the yarn feeder (starting yarn feeder) has started to travel after traveling a predetermined distance. As a result, the interval (running interval) between the first yarn feeder that starts moving first and the later yarn feeder that starts moving subsequently
Is maintained at a predetermined value.

As one of the techniques for controlling the knitting machine as described above, one of the position control patterns registered in the knitting machine for all courses of the running interval between the leading yarn feeder and the trailing yarn feeder is set. There is one that controls a constant value equal to the maximum pattern length (Japanese Patent Laid-Open No. 12855/1989).

However, in the above-mentioned prior art, since the running interval is controlled to be a common value for all the courses, the running interval of the yarn feeder becomes unnecessarily large in the course where the pattern length is short, and as a result, the knitting is as much as that. Time will increase.

In a knitting machine, generally, the knitting time can be shortened by increasing the moving speeds of the knitting needle and the yarn feeder to increase the knitting speed. But,
By doing so, knitting errors are more likely to occur, and the quality of the knitted fabric deteriorates.

[0008]

Therefore, in the knitting machine, it is important to shorten the knitting time without increasing the knitting speed.

[0009]

SOLUTION, ACTION, EFFECT The knitting machine control method according to the present invention uses a plurality of plural yarn guides which are used for each movement of the yarn feeder from the start to the next stop of the yarn feeder of the first yarn or the yarn feeder of the subsequent yarn. Among the position control patterns, determining the maximum pattern length that maximizes the pattern length, and controlling the running interval between the first yarn feeder and the latter yarn feeder based on the obtained maximum pattern length. Characterize.

Depending on the course, the maximum pattern length among a plurality of position control patterns used while the yarn feeder travels once is greater than the maximum pattern length among all the position control patterns registered in the knitting machine. There are small cases. The maximum pattern length is obtained from a plurality of position control patterns used during one run at an appropriate time for each movement of the yarn feeder, and based on the obtained maximum pattern length, the leading and trailing yarn feeders When the running interval of is controlled, the knitting time is shortened as compared with the case where it is controlled to a constant value for all the courses.

As described above, according to the present invention, the knitting time can be shortened without increasing the knitting speed.

The running interval is the maximum pattern length of the latter half of the plurality of position control patterns used between the start of movement of the yarn feeder and the next stop of the yarn feeder, and the feeding of the trailing yarn feeder. It is possible to control the sum to the maximum pattern length of the first half of the plurality of position control patterns used from the start of the movement of the yarn end to the next stop. Thereby, the knitting time can be shortened most.

However, the running interval is the maximum pattern length of the latter half of the plurality of position control patterns used between the start of movement of the yarn feeder and the next stop, and a preset value. The maximum pattern length of the first half of the plurality of position control patterns used from the start of movement of the yarn feeder to the next stop of the latter yarn feeder is set in advance. You may control to the sum with a value.

[0014]

1 and 2, a control device 10 of a flat knitting machine comprises a plurality of yarn feeder driving devices 14 for reciprocating a yarn feeder 12 and a plurality of knitting needles for reciprocating a knitting needle 16. Drive device 18, a plurality of yarn feeder control circuits 20, a plurality of knitting needle control circuits 22, and a main control circuit 24
Including and

Each yarn feeder driving device 14 corresponds to the yarn feeder 12, and reciprocates the corresponding yarn feeder 12.
Therefore, the same number of yarn feeder drive devices 14 as the yarn feeders 12 provided in the flat knitting machine are provided in the knitting machine. Each yarn feeder control circuit 20 is commonly connected to a plurality of yarn feeder driving devices 14.

Each knitting needle drive device 18 corresponds to the knitting needle 16 and moves the corresponding knitting needle 16 back and forth.
Therefore, as many knitting needle driving devices 18 as the number of knitting needles 16 provided in the flat knitting machine are provided in the knitting machine. Each knitting needle control circuit 22 is commonly connected to a plurality of knitting needle driving devices 18.

Each yarn feeder 12 is attached to an endless belt 28 wound around a plurality of pulleys 26. When the endless belt 28 is moved by an actuator 30, the endless belt 28 is reciprocated in the left-right direction. The actuator 30 is a rotary electric motor such as a servo motor, and its displacement amount (rotation amount) is detected by a rotary position sensor 32 such as a rotary encoder. The position sensor 32 outputs a pulse signal every time the actuator 30 rotates by a predetermined angle.

Each knitting needle 16 is reciprocated by a linear movement type actuator 34 such as a linear motor.
The displacement amount (movement amount) of the actuator 34 is detected by a linear position sensor 36 such as a linear encoder. The position sensor 36 outputs a pulse signal each time the mover of the actuator 34 moves by a predetermined amount.

A linear movement type actuator such as a linear motor may be used as the actuator 30. Further, as the actuator 34, a rotary type such as a servo motor may be used.

Each yarn feeder driving device 14 receives the control signal S1 output from the yarn feeder control circuit 20 in the signal generator 38 and outputs the driving signal S2 from the signal generator 38 to the driver 40. The control signal S1 is a signal that specifies the pulse width (that is, the duty ratio) of the drive signal S2.

Each signal generator 38 outputs a PWM signal obtained by pulse-width modulating a pulse signal of a constant frequency by the control signal S1 to the driver 40 as a drive signal S2. As a result, the driver 40 energizes the actuator 30 each time the drive signal S2 is input for the time corresponding to the pulse width.

Each yarn feeder driving device 14 also receives the pulse signal from the position sensor 32 in the up / down counter 42, periodically reads the count value of the counter 42, and temporarily stores it in the memory 44.

The data stored in the memory 44 is used as the current position S4 of the corresponding actuator 30 in the control circuit 2.
It is read periodically to zero. The counter 42 counts the pulse signal from the position sensor 32 in the up state when the actuator 30 is rotating normally, and counts the pulse signal in the down state when rotating the actuator 30 backward. The stored contents of the storage unit 44 may be updated each time the counter 42 steps up.

Each knitting needle drive device 18 drives the linear movement type actuator 34, and thus, the yarn feeder drive device 14 is provided.
Except that the yarn feeder driving device 14 has the same configuration and operates in the same manner. Therefore, each knitting needle drive device 18 receives a control signal from the control circuit 22 and outputs a PWM signal as a drive signal, which is a PWM signal obtained by modulating the pulse width of a pulse signal of a constant frequency, and an actuator 34 receiving the drive signal. And an up-down counter that counts pulse signals from the position sensor 36, and a storage device that stores the count value of this counter as the current position of the knitting needle.

Each control circuit 20 temporarily stores a plurality of target positions S5 corresponding to each of the yarn feeder driving devices 14 supplied from the main control circuit 24 and the comparison calculator 46 for generating the control signal S1. And a container 48.

The comparison calculator 46 reads the target position S5 of the predetermined yarn feeder driving device 14 from the plurality of target positions S5 stored in the corresponding storage device 48, and at the same time, the storage device of the predetermined yarn feeder driving device 14 is read. The current position S4 stored in 44 is read, and the read target position S5 and current position S
4 is compared, the duty ratio corresponding to the deviation between the two is calculated, and the control signal S1 meaning the duty ratio is supplied to the signal generator 38 of the corresponding yarn feeder drive device 14.
These processes are executed periodically for each yarn feeder.
As for the data in the memory 48, the target position S5 is the main control circuit 2
It is updated every time it is supplied from 4.

Each of the control circuits 22 is constructed similarly to the control circuit 20 and operates in the same manner. Therefore, each control circuit 22, like the control circuit 20, temporarily stores the target position for the knitting needle drive device 18 supplied from the main control circuit 24, and the target stored in this memory. And a comparison calculator that generates a control signal using the position and the corresponding current position stored in the memory of the knitting needle drive device 18.

The main control circuit 24 reads the knitting machine control section 50 for controlling the entire flat knitting machine and the knitting data written in the floppy disk 52, and knitting machine control section 50.
Input to the disk drive 54 and the knitting machine controller 50
Control operation unit 56 for transferring various data to and from
And a storage unit 58 in which a plurality of position control patterns are stored.

The knitting data includes a code for specifying a position control pattern (wave pattern) for each knitting needle and each course, and also includes a code for specifying a yarn feeder used for knitting and a moving direction thereof for each course. As the organization data, the data shown in FIGS. 3 to 6 can be used. Those data are stored as a binary code.

The knitting data shown in FIG. 3 is a data in which a yarn feeder number (carrier number) for specifying a yarn feeder to be used and a pattern number (WP number) for specifying a position control pattern (WP) are tabulated for each course ( It is carrier number and WP number data for each course).

In the knitting data shown in FIG. 4, the pattern length is divided into a first half α and a second half β and tabulated for each pattern number (WP number) (data of the first half and the second half for each WP number). It is).

The data shown in FIG. 5 is the pattern length (WP
(Length) is divided into a first half α and a second half β, and the data is a table for each yarn feeder (carrier number) (length data of the first half α and the second half β for each carrier number).

FIG. 6 is a table showing the numbers of the yarn feeders (carrier numbers) to be used and the position control pattern numbers (WP numbers) for each course and each knitting needle (carrier number and WP number for each course and each knitting needle). Data).

An example of the first half α and the second half β in FIGS. 3 to 6 is shown in FIGS. The length relationship between the first half α and the second half β can be set as follows.

Α5> α2> α9> α1> α3> α4

Β3> β4> β9> β1> β5> β2

The position control pattern is, for example, as shown in FIGS.
As shown in FIGS. 9 and 10, the knitting needle position where the position of the needle bed gap is zero, that is, the movement amount of the knitting needle is taken as the vertical axis, and the yarn feeder 1
The distance in the horizontal direction from the yarn feeder when the position of 2 is the origin can be represented as a diagram with the horizontal axis.

FIG. 7 shows an example of a general knit pattern. The knitting needle waiting at the standby position, that is, the origin position PA1 is first advanced to the position PA2 where the knitting yarn is retracted, and then the knitting yarn is locked. It is shown that the position PA3 is retracted, then the position PA4 for forming a stitch is retracted, and then the position PA5 is moved back to the origin position PA1.

In the knit pattern of FIG. 7, the symbol αn
Is the pattern length of the first half of the knit pattern and indicates the horizontal distance between the knitting needle and the yarn feeder when the knitting needle starts to advance from the position PA1 to PA2.
The symbol βn is the pattern length of the latter half of the knit pattern and indicates the horizontal distance between the knitting needle and the yarn feeder when the knitting needle returns from the position PA4 to the position PA5. αn
+ Βn represents the entire length of the knit pattern.

The difference between the position PA4 and the position PA5 represents a stitch, and βn varies depending on the size of the stitch even in the same knitting pattern. Also, from position PA1 to position PA
If the moving speed or acceleration of the knitting needle between the two is different, then αn is different. Therefore, in addition to the type of knitting, the WP number is given to all position control patterns having different conditions such as the size of stitches, the moving speed of the knitting needle, and the acceleration of the knitting needle.

9 and 10 show a general knit pattern 60 by a solid line, and show a tuck pattern 62 in the case of tuck and a welt pattern 64 in the case of a welt that does not form a loop in the general knit pattern 60. Is indicated by a broken line. The tuck pattern 62, except that the knitting needle is not advanced to the position PA2 in FIG. 7, but is advanced to the position PA3 in the middle of the advance as shown by the broken line,
It is the same as the knit pattern 60. The welt pattern 64 indicates that the knitting needle is not moved from the origin position PA1.

FIG. 9 also shows a knitting yarn 70, a yarn feeding port 72 for supplying the knitting yarn 70, a guide 74 for guiding the yarn feeding port 72, a plurality of tooth openings 76, and a plurality of knitting needles N1 to N.
16 and 16 are shown. The yarn feeder 72 is moved to the right or left from the origin position (movement reference position) at the left end or the right end of the knitting machine.

The position control patterns shown in FIGS. 9 and 10 show the positions of the knitting needles N1 to N16 when the yarn feeder 72 is moved from the left end to the right. On the other hand, the position control patterns of FIGS. 7 and 8 show the relationship between the position of the yarn feeder and the movement locus of the knitting needle to be moved when the yarn feeder is moved from the right end to the left.

Each position control pattern is defined by a yarn feeder position at a constant distance within a constant range narrower than the movable range of the yarn feeder (for example, a yarn feeder position at a distance from a base end position in a constant range or within a constant range). Is stored as a knitting needle position for each fixed distance from the knitting needle in FIG.

According to the above, the capacity of the storage unit required for storing the position control pattern may be smaller than that in the case where the position control pattern is stored as a continuous curve. Moreover, each position control pattern can be commonly used by many knitting needles.

The knitting machine control unit 50 uses the disk drive 5
The knitting data supplied from No. 4 is stored in the internal memory, and the driving devices other than the yarn feeder driving device 14 and the knitting needle driving device 18 are controlled based on the knitting data. The knitting machine control unit 50 also reads knitting data including a position control pattern for each yarn feeder and each knitting needle for each course and supplies it to the control calculator 56.

The control calculator 56 reads out the position control pattern corresponding to each knitting needle for each course based on the knitting data supplied from the knitting machine controller 50, and calculates the yarn feeder position X (distance from the origin position). Then, the target position of the knitting needle is obtained from the calculated yarn feeder position X and the read position control pattern, and the obtained target position is supplied to the storage device of the predetermined knitting needle control circuit 22. These processes are executed periodically (for example, every 1 msec) for each course and each knitting needle.

As a result of the above, since the data in the storage unit of the control circuit 22 is periodically updated, a new duty ratio is calculated by the comparator and the new control signal corresponds to the control circuit 22 thereafter. Drive device 1 corresponding to the comparison arithmetic unit
8 and the new drive signal is supplied to the driver of the corresponding drive device 18. As a result, each knitting needle is advanced and retracted in synchronization with the movement of the yarn feeder.

The control calculator 56 also controls the position of the yarn feeder. Therefore, the control calculator 56 determines the elapsed time from the start of movement of the yarn feeder and the set speed of the yarn feeder (for example,
(70 cm / sec) is calculated as the target position of the yarn feeder, and the calculated target position is supplied to the storage device 48 of the control circuit 20. The comparison calculator 46 of the control circuit 20 is the driving device 1
The duty ratio is calculated by comparing the current position of the yarn feeder (the yarn feeder position X) input to the storage device 44 of No. 4, and the control signal corresponding to the calculated duty ratio is output to the drive device 14. This process is also executed periodically (for example, every 1 msec) for each course and each yarn feeder.

As a result of the above, each time the processing is executed, a new drive signal is supplied from each control circuit 20 to the corresponding drive device 14, and the corresponding yarn feeder is reciprocated.

The running interval of the yarn feeder is the maximum at which the pattern length is the maximum among the plurality of position control patterns used between the start of movement of the first yarn feeder and the subsequent yarn feeder, and the next stop. Including the method of calculating the pattern length and controlling the running interval between the leading yarn feeder and the trailing yarn feeder based on the obtained maximum pattern length, the method for calculating the target position of the knitting needle in the control calculator 56 will be described below. The case of the knitting needle N16 will be described as a representative.

As shown in FIG. 10, each position control pattern is set as a knitting needle position with respect to the yarn feeder position for each constant distance ΔXS (for example, 1 mm) within a constant range X0 to XT narrower than the movable range of the yarn feeder. In the case of the knitting needle N16, the knitting needle N16 starts from the origin position of the yarn feeder.
Suppose that the distance to the arrangement position is XN16, and the knitting needle N16 starts moving when the distance between the yarn feeder and the knitting needle N16 becomes L0, the target position of the knitting needle N16 is determined by the control calculator 56. It is calculated and output as follows.

First, when the knitting of a new course is started, the control calculator 56 reads out the position control pattern corresponding to each knitting needle of the course from the knitting data. afterwards,
For example, for the position control pattern corresponding to the knitting needle N16, the yarn feeder position, that is, the offset amount corresponding to the origin (X0) of the horizontal axis in the read position control pattern for the knitting needle N16 is obtained, and the horizontal axis coordinate in the position control pattern is obtained. The value X0 is the coordinate value of the knitting needle N16 (XN16-
After correction to (L0-X1), the origin position PA1 of the knitting needle is output as the target position until the yarn feeder position calculated as described above becomes (XN16-L0). In addition, L0-
X1 may be α.

When the yarn feeder position exceeds (XN16-L0), the control calculator 56 outputs a value larger than PA1 as a target value in order to advance the knitting needle N16 to the position PA2. After that, the control calculator 56 outputs a predetermined target position for the knitting needle according to the calculated yarn feeder position and the position control pattern in which the horizontal axis coordinate value is corrected.

Next, a method of calculating the interval (running interval) between two yarn feeders that run adjacent in time will be described for the nth course.

At the start of knitting of the nth course, the knitting machine control unit 5
0 reads out the WP numbers # 1, # 2, # 5 and # 9 of the position control pattern used in the nth course from the data shown in FIG.

Next, the knitting machine control unit 50 reads out the corresponding half length data β1, β2, β5 and β9 from the data shown in FIG. 4 based on the read out WP number, and sets the longest data β9 among them. The maximum value βmax of the latter half of the position control pattern for the n-th course is set.

Next, the knitting machine controller 50 reads out the WP numbers # 1, # 3 and # 4 of the position control pattern used in the next course (n + 1th course) from the data shown in FIG.

Next, the knitting machine control section 50 reads out the corresponding first half length data α1, α3 and α4 from the data shown in FIG. 4 based on the read out WP number, and the longest data α3 among them is the n + 1th data. The maximum value αmax of the first half of the use position control pattern is set.

Next, the knitting machine controller 50 causes βmax +
αmax (that is, β9 + α3) is calculated to obtain β
Let 9 + α3 be the running distance between the yarn feeder for the nth course and the yarn feeder for the (n + 1) th course.

Next, the knitting machine control section 50 starts the traveling of the yarn feeder for the nth course. At this time, α in FIG.
The knitting needles within the range of 1 are advanced to the position according to the position control pattern shown in FIG. 7, and then the running of the yarn feeder for the nth course is started.

In the n-th course, each knitting needle is advanced and retracted in synchronization with the movement of the yarn feeder for the n-th course according to the position control pattern of the numbers shown in FIG.

Next, the knitting machine control section 50 similarly calculates the running interval β3 + α2 between the (n + 1) th course yarn feeder and the (n + 2) th yarn feeder.

Then, as shown in FIG. 8, the knitting machine control section 50 starts the traveling of the yarn feeder for the (n + 1) th course when the traveling distance of the yarn feeder for the nth course is β9 + α3, and the obtained traveling is obtained. A predetermined signal for maintaining the interval is output to the control calculator 56. As a result, the yarn feeder for the (n + 1) th course is controlled so as to move rearward from the yarn feeder for the (n) th course by the interval β9 + α3.

Thereafter, the knitting machine control unit 50 calculates the sum of the maximum pattern length of the latter half of the position control pattern for the first yarn feeder and the maximum pattern length of the first half of the position control pattern for the succeeding yarn feeder. The above operation of outputting a predetermined signal for maintaining the obtained traveling interval to the control calculator is executed for each course for all the courses to be knitted.

In the above-described embodiment, in knitting without traveling of the yarn feeder, such as transfer and stitching, the yarn feeder is regarded and controlled as if it were traveling. Specifically, the control calculator 56 calculates the current position of the virtual yarn feeder from the elapsed time from the start of movement of the virtual yarn feeder and the set speed of the virtual yarn feeder, and the calculated current position and position control. Find the target position of the knitting needle from the pattern,
The calculated target position is output to the storage device of the corresponding control circuit 22.

The pattern length of the first half portion and the pattern length of the latter half portion of the position control pattern for transfer and stitching are
Each is preset based on the virtual yarn feeder position in the position control pattern. Therefore, for example, the running distance between the virtual yarn feeder for the first transfer and the actual yarn feeder for the second transfer is determined by the pattern length of the latter half of the position control pattern for the second transfer and the position control pattern used by the latter actual yarn supply port. Is determined as the sum of the maximum pattern length of the first half of.

When moving a plurality of yarn feeders without advancing and retracting the knitting needles such as when moving the yarn feeders to the standby position, the running interval may be set to zero and the plurality of yarn feeders may be moved simultaneously. .

Further, the running interval may be controlled to be the sum of the maximum pattern length of the latter half portion of the position control pattern for the starting yarn feeder and a preset value, or for the trailing yarn feeder. You may control to the sum of the maximum pattern length of the first half of the position control pattern and a preset value. The former, instead of obtaining the maximum pattern length of the first half of the position control pattern for the subsequent yarn feeder,
Since the set value is used, the set value is equal to or larger than the maximum pattern length of the first half of all position control patterns used for knitting the knitted fabric. In the latter case, the set value is used instead of obtaining the maximum pattern length of the latter half of the position control pattern for the starting yarn feeder, so the set value is the knitting of the knitted fabric. The value is equal to or larger than the maximum pattern length of the latter half of all position control patterns used for.

The running interval between the first yarn feeder and the latter yarn feeder may be obtained immediately before the start of movement of each yarn feeder course, or may be obtained in advance for all courses based on the knitting data before the start of knitting. You can leave it. In the latter case, when the formation data is changed during formation, it is preferable to newly obtain the running interval for the changed course.

Instead of creating the knitting data in which the WP numbers used for each course are collected in advance as shown in FIG. 3, the WP numbers used in each course are calculated for each course based on the knitting data shown in FIG. You may specify.

The present invention is not limited to the above embodiment. For example, the present invention is not limited to a device for controlling an actuator for a knitting needle while calculating a yarn feeder position, but also Japanese Patent Publication No. 1-1.
As described in Japanese Patent No. 2855, it can be applied to a device for controlling the knitting needle actuator while detecting the position of the yarn feeder.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an electric circuit of a knitting machine provided with a control device of the present invention.

FIG. 2 is a block diagram showing an embodiment of an electric circuit of the control device shown in FIG.

FIG. 3 is a diagram showing an example of a part of the field code and position control pattern of the yarn feeder used in each course.

FIG. 4 is a diagram showing an example of a pattern length for each position control pattern.

FIG. 5 is a diagram showing an example of a pattern length for each yarn feeder.

FIG. 6 is a diagram showing an example of a position control pattern for each yarn feeder plate number and knitting needle for each course.

FIG. 7 is a diagram showing an example of a position control pattern.

FIG. 8 is a diagram for explaining a method of calculating a traveling interval.

FIG. 9 is a diagram showing a relationship between an advancing position of a knitting needle and a moving position of a yarn feeder with respect to a position control pattern.

FIG. 10 is a diagram showing the relationship between the advancing position of the knitting needle and the moving position of the yarn feeder with respect to the position control pattern.

[Explanation of symbols]

10 Control device 12 yarn feeder 16 knitting needles 30 Actuator for yarn feeder 32,36 Position sensor 34 Knitting needle actuator

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuhiro Araki             5-18-18 Nomachi, Kanazawa, Ishikawa Prefecture Tsudakoma             Industry Co., Ltd. (72) Inventor Eiko Kitamura             5-18-18 Nomachi, Kanazawa, Ishikawa Prefecture Tsudakoma             Industry Co., Ltd. F-term (reference) 4L054 AA01 CA01 CA02 CA03 CA08                       CB03 CB04 DA04 DA05 NA03                       NA05

Claims (4)

[Claims] 1. A plurality of knitting needle drive actuators connected for each knitting needle are driven based on a corresponding position control pattern for the knitting needle, and a plurality of yarn feeder driving actuators connected for each yarn feeder are provided. In a method of controlling a knitting machine that is driven in synchronization with a drive actuator, a plurality of yarn feeders that are used from the start of movement of the yarn feeder to the next stop for each of the first yarn feeder and the subsequent yarn feeder each time the yarn feeder moves. Of the position control pattern, the maximum pattern length that maximizes the pattern length is obtained, and the traveling interval between the first yarn feeder and the second yarn feeder is controlled based on the obtained maximum pattern length. , Knitting machine control method. 2. The running interval is the sum of the maximum pattern length of the latter half of the position control pattern for the leading yarn feeder and the maximum pattern length of the first half of the position control pattern for the trailing yarn feeder. The control method according to claim 1, wherein the control is performed. 3. The control method according to claim 1, wherein the running interval is controlled to be a sum of a maximum pattern length of a second half portion of the position control pattern for a starting yarn feeder and a preset value. 4. The control method according to claim 1, wherein the traveling interval is controlled to be a sum of a maximum pattern length of a first half portion of the position control pattern for a subsequent yarn feeder and a preset value.