KR20130075650A - Method and device for generating knitting data of flat knitting machine - Google Patents

Abstract

PURPOSE: A knitting data of the weft appointment is provided to as invention relating to production of the knitting data at the weft knitting machine. CONSTITUTION: A production method of knitting data of the weft appointment comprises the following steps. A carriage [carriage] manipulating the needle of the needle bed and needle bed [needle bed] of at least forward and backward pair. A plurality of carriers which supply thread to the needle of the needle bed and multiple carrier rail [carrier rail]s are included. As to a method of automatically producing the knitting data of the weft appointment comprises the following steps. A step (S1) saved at the carrier used in the knitting data among 1 components, of the garment [garment]. A step (S2) determining the stop position of carrier based on data at the carrier. It detects that the stop position of carrier overlaps toward the right angle direction of the needle bed in the horizontal plane in a longitudinal direction. A producing method of knitting data for weft appointment comprises The step (S5) which changes the stop position so that the carrier may not carry out side by side is enforced. [Reference numerals] (AA) Stop position of a carrier; (BB) Non-exist; (CC) Exist; (DD) End; (S1) Save at the carrier used in the knitting data among 1 components, of the garment; (S2) Determine the stop position of carrier based on data at the carrier; (S3) Perform a loop against a most frequently used carrier; (S4) Is it a carrier which interferes during stop?; (S5) Change the stop position so that the carrier may not carry out side by side is enforced; (S6) All carriers : treatment finished; (S7) Carrier for next use

Description

Method of generating knitting data for flat knitting machine and its apparatus {METHOD AND DEVICE FOR GENERATING KNITTING DATA OF FLAT KNITTING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the generation of knitting data in flat knitting machines, and more particularly, to determining a stop position of a carrier in knitting data to prevent interference between carriers.

The flat knitting machine includes, for example, a pair of long needle-shaped needle beds, and operates a needle by a carriage that reciprocates on the needle bed. To knit the fabric. Above the needle bed, a plurality of carrier rails are arranged in parallel with the length direction of the needle bed, and the carrier is also called a yarn feeder, and feeds the yarn from the lower feeder at the lower end. The upper end portion is supported by the carrier rail and has elasticity that is slightly bent along the front-back direction of the flat knitting machine. The carrier is interlocked by the carriage, sliding along the carrier rail, and stopped when the interlock is released.

Since the feed yarns of the carrier move just above the gap between the needle beds, the feed spheres contact each other when the carriers cross, and the carriers deform slightly so that the feed spheres cross each other. The carriage is provided with other members such as a stitch presser in addition to a cam for operating the needle, and these members are provided at the upper portion of the gap between the needle beds and the like. For this reason, when a some carrier stops at the same position, a yarn feeder interferes with other members, such as a stitch presser. Thus, the carrier is not stopped at the same position. Specifically, only a parameter called reset correction is allowed to stop outside the knitting width. If the reset correction value is made different for each carrier, the plurality of carriers can be prevented from stopping at the same position. However, in order to do this, it is necessary to input the reset correction value manually. In addition, the reset correction value is part of the knitting data because it is directly connected to the movement distance and operation of the carrier.

Patent document 1 (Unexamined-Japanese-Patent No. 5-93348) discloses correct | amending the position which release | releases the linkage of a carrier in consideration of the slip amount of a carrier. Moreover, patent document 2 (Unexamined-Japanese-Patent No. 2011-106059) has described the arrangement | positioning of a carrier rail and a carrier with respect to a needle bed. However, it is not known to automatically generate the stop position of the carrier.

Japanese Patent Laid-Open No. 5-93348 Japanese Laid-Open Patent Publication 2011-106059

An object of the present invention is to automatically generate knitting data including data of a stop position of a carrier so that the carrier does not interfere.

The present invention relates to at least one pair of front and rear needle beds, a carriage for manipulating the needles of the needle bed, a plurality of carrier rails, and a plurality of carrier rails, which are linked to the carriage along individual carrier rails. In the method of automatically generating knitting data for flat knitting machines having a plurality of carriers for supplying a thread to a needle of a needle bed,

A step of obtaining data indicating the course of the carriage using the carrier and the moving range of the carrier in each part of the garment for each carrier used for the knitting;

Determining a stop position of a carrier for each carrier based on the data;

When it is detected that the stop position of the carrier overlaps in the perpendicular direction in the horizontal plane in the longitudinal direction of the needle bed, a step of changing the stop position so as not to overlap the carrier is performed.

In addition, the present invention is at least a pair of needle beds before and after, a carriage for operating the needle of the needle bed, a plurality of carrier rails, and a plurality of linked to the carriage along the individual carrier rails to supply the thread to the needle of the needle bed An apparatus for automatically generating knitting data for flat knitting machines having a carrier of

Analysis means obtained for each of the carriers used in the formation of data representing the course of the carriage using the carrier and the moving range of the carrier in one part of the garment,

Based on the data, the stop position of the carrier is determined for each carrier, and when the stop position of the carrier is detected to overlap at right angles in the horizontal plane in the longitudinal direction of the needle bed, the stop position is determined to change the stop position so that the carrier does not overlap. It is characterized by including a means.

In this way, the stop position of the carrier can be automatically determined based on the number of times of use of the carrier and the data of the movement distance, and the stop position of the carrier overlaps at right angles in the horizontal plane in the longitudinal direction of the needle bed, thereby preventing the carrier from interfering. Do not. The stop position of the carrier includes a stop position closest to the knitting width as the top of the end, and a stop position closest to the knitting width as the position where the minimum value of FIG. The analyzing means corresponds to, for example, the use frequency extracting section or the block extracting section of FIG. 2, and the stop positioning means corresponds to, for example, the reset correction value assignment section of FIG. In this specification, the description of the method of generating the knitting data is suitable for the apparatus for generating the knitting data as it is, and the description of the apparatus for generating the knitting data is suitable for the method of generating the knitting data as it is.

Preferably, the stop position determining means determines the stop position such that the carrier having a large number of times of use is stopped near the end of the knitting width, and the carrier having a low number of times of use is stopped at a position away from the end of the knitting width. This makes it possible to shorten the distance that the carriage moves the carrier by stopping the carrier having a large number of uses near the end of the knitting width. Therefore, the parts can be organized in a shorter time. The refreshment of the number of times of use may be obtained with appropriate precision. For example, if the precision is three times, the number of times of use is 51 and 49 times, respectively. It is also important that the stop position of the carrier is the value of the carrier with a large number of times of use, and for the carriers such as the lower two of the times of use, the stop position may not follow the order of the number of times of use.

Preferably, the stop position determining means determines the stop position based on the number of uses in the parts unit. This makes it easy to determine the stop position.

More preferably, while the part is divided into a plurality of blocks in the wale direction by the analyzing means, the stop positioning means determines the stop position based on the number of uses in block units. In this case, the stop position can be determined so that the extension distance for interlocking the carrier is shortened when the carrier to be used is changed along the wale direction.

1 is a plan view of a needle bed and a carrier rail.
2 is a block diagram of the organization data generating apparatus of the embodiment.
3 is a flowchart showing an algorithm for determining a stop value of a carrier in the embodiment.
4 is a diagram showing a relationship between the knitting width of a part and a minimum value and a reset correction value.
Fig. 5 is a diagram schematically showing the stop positions of the carriers a, b and c with respect to the parts.
Fig. 6 is a flowchart showing an algorithm for determining the stop value of a carrier in the modification.
Fig. 7 is a diagram schematically showing the stop positions of the carriers a, b, and c with respect to the parts in the modification.
FIG. 8 is a diagram schematically showing a stop position of the carriers a to d with respect to the parts of the in yarn knitting in the modification.

The following shows the best examples for carrying out the invention.

(Example)

1 to 8 show examples and modifications thereof. 1 schematically shows a carrier rail on a needle bed, 2 being a front bed, 4 a back bed, with a gap 6 therebetween. There are a plurality of carrier rails 8-11 on the top of the beds 2, 4, and the carrier 12 along the carrier rails 8-11 is not shown in the figure. It slides in conjunction with the carriage. In the drawing, the knitted knitting is performed, 14 is a knitting width of the front body, 15 is a knitting width of the left sleeve, etc., 16 is a knitting width of the right sleeve, etc., and one garment is a plurality of parts. As for the part, the knitting width may change during the knitting. The garment may have a constant knitting width or may be one garment = one part like a no-sewing knitting. Hereinafter, in this specification, the direction parallel to the longitudinal direction of the beds 2 and 4 in the horizontal plane and the direction orthogonal to the longitudinal direction of the beds 2 and 4 are referred to as the front-rear direction.

20 denotes an organized data generating apparatus, 21 denotes a user interface, and includes input means such as a mouse, a trackball, a digitizer, a keyboard, and a color monitor. 22 is a network interface, which exchanges data and programs with the network. Reference numeral 23 denotes a disk drive, which exchanges data and programs with a disk not shown in the figure. 24 is a memory and stores various types of data, especially organized data. Numeral 25 denotes a program memory, which stores a program of the organization data generating device 20.

Reference numeral 26 denotes a conversion unit that converts design data of the knitted fabric input from the user interface 21, the network interface 22, the disk drive 23, or the like into knitted data. This conversion does not generate data at the stop position of the carrier or assigns an appropriate default value. Reference numeral 27 denotes a use frequency extracting section, and extracts the number of times of use and the moving range for each course for each carrier used in the organization data. 28 is a block extraction unit, which is used to execute the algorithm of FIG. 6, and divides one part into a plurality of blocks based on which carrier is used. In the case of executing the algorithm of Fig. 3, the block extractor 28 is unnecessary. The division into blocks is carried out along the wale direction of the part, and the minimum value is set to the length of the block along the wale direction, and a block having a length less than the minimum value is merged into one of the upper and lower blocks.

29 is a reset correction value assignment unit, which assigns a reset correction value to a carrier. The reset correction value may be constant between the knitting of one part, or may be changed during the knitting of one part. The interference check unit 30 checks the interference between the carriers. Here, the interference means that the plurality of carriers stop at the overlapped positions along the front and rear directions of the flat knitting machine. When the carrier is in an interfering state, that is, when a plurality of carriers are overlapped and stopped in the front and rear direction, and a carriage not shown in the figure moves to intersect the carrier, a stitch presser or the like in the carriage is moved with the carrier. It may be damaged by interference.

The reset correction value assignment unit 29 allocates, for example, a reset correction value 0 to each of the first carriers. When the interference check unit 30 detects the interference between the carriers, the interference is eliminated by, for example, increasing the reset correction value of the carrier having a low frequency of use so as to avoid the interference. The knitting data generating device 20 may be provided in a flat knitting machine, or may be provided in a design device that creates design data such as a garment and converts the knitting data into knitting data.

3 to 5 show a method of determining the stop position of the carrier. The design of the part is determined and converted to the knitting data to determine data such as the knitting width, the type of stitch, the number of courses, and which carrier to move from which course to which range. In step 1, the course using the carrier and the moving range for each course are determined for each carrier in one part. This process is performed for at least the carrier actually used. The number of uses of the carrier in one part is determined for each carrier, and the stop position of each carrier is set to the minimum value. In other words, the reset correction value is set to 0 for each carrier (step 2). Carriers that are not used are evacuated, for example, at the end of the needle bed.

The meaning of the reset correction value is shown in Fig. 4, and the carrier reciprocates right and left of the knitting width, and the stop position of the carrier is a position spaced from the end of the knitting width by a minimum of 0 to 3 needles. The minimum value is, for example, 0 in the case of intarsia knitting, and 2 to 3 needles in the case of other knitting. The minimum value is added to the knitting width to indicate the moving range of carriers in the knitting data. The reset correction value is 0 at the position shifted outward from the knitting width by the minimum value, which is the minimum value of the reset correction value, and the reset correction value increases toward the outside of the knitting width. The unit of the reset correction value is, for example, the width of one steep mouth. Resetting of the reset correction value is a shift from the minimum value because the carriage stops interlocking the carrier. The carrier with the minimum reset correction value stops at the position shifted outward from the knitting width by the minimum value, and stops at the position away from the knitting width as the reset correction value increases.

For example, steps 4 to 7 are executed in the order of small carriers (steps 3 and 7) from the carriers with many times of use. In step 4, for each course, the position of the carrier at the stop is checked to detect the presence or absence of an interfering carrier. When there is an interfering carrier, the stop position is shifted outward, and in other words, the reset correction value is increased to eliminate the interference (step 5). If the stop position of the interfering carrier is changed, interference may occur in series with other carriers. Therefore, the stop position of the carrier is changed until the interference is resolved. When steps 4 and 5 are executed for all courses, for example, the processing of all the carriers used after the same processing is performed on the carriers with the greatest number of times of use, and then the algorithm shown in FIG.

FIG. 5 shows the reset correction value (single dashed line) and the actual stop position (double dashed line) with respect to the carriers a, b, and c when organizing the part 32, and a, b in the part 32. FIG. , symbol c represents a carrier to be used. In this specification, the course direction is a direction parallel to the reciprocating direction of the carriage, and the wale direction is a direction perpendicular thereto. The number of times of use of the carrier in the part 32 is in the order of c> a> b, the minimum reset correction value for the carrier c, the next reset correction value for the carrier a, and the maximum for the carrier b. Allocate a reset correction value. If there is no increase or decrease in the knitting width of the part 32, if the reset correction value is determined as described above, interference between carriers does not occur. The dashed dotted line in Fig. 5 shows the stop position of the carrier along the reset correction value.

If the knitting width of the part 32 is increased or decreased, the stop position of the carrier may be the same even if the reset correction value is different. For example, since the knitting width increases from the block using the carrier c to the right, and in this block the carriers a and b are not used, the carrier c and the carriers a and b are stopped. Interferes. Thus, by the step 5 in Fig. 3, the stop positions of the carriers a and b are automatically changed as shown in Fig. 5, or the stop positions of the carriers a and b are manually changed. In the last block using the carrier a, the knitting width gradually decreases and the carrier a interferes with the carrier c. Therefore, the stop position of the carrier c is changed as shown by the dashed line in Fig. 5, for example. do. In Fig. 5, the stop position of the carrier is shifted by one carriage movement from the trace of the single-dot chain line to the locus of the double-dot chain line, but the stop position of the carrier may be shifted slightly for each course in which interference occurs. In addition, the shift of the stop position of the carrier may be up to a course where interference occurs. If the reset correction value is regarded as a variable that can be changed in the middle of the part, the reset correction value may be determined so as to take the locus of the double-dotted line on the right side of FIG.

If you do the above

● stop positions of carriers (a, b, c) can be automatically generated,

● By shortening the distance for interlocking the carrier, it is possible to shorten the moving distance of the carriage and improve productivity.

Interference between carriers can be eliminated.

6 to 8 are the same as the embodiment of Figs. 1 to 5 except that the modifications are specifically indicated. First, Step 1 of Fig. 3 is executed, and then the part is divided into a plurality of blocks along the wale direction based on which carrier is to be used in Step 11. At this time, it is preferable that a small block whose course number is smaller than or equal to a predetermined value is not generated by setting the minimum value to the length along the wale direction of the block. In step 11, the frequency of use of each carrier is obtained for each block. Subsequent processing is made in units of blocks. In step 12, the stop position of each carrier is set to the minimum value. For example, the interference in the block is eliminated in the same manner as in steps 4 to 7 of FIG. 3 (step 13).

7 shows the reset correction value to the part 33 by a dashed-dotted line, and X in the figure indicates replacing the reset correction value. With respect to the part 33, the small block using the lowermost carrier a and the small block using the following carriers a and b are merged, so that the whole is made into four blocks, for example. Then replace the reset correction value in blocks. In the first block, the carrier (b) is used in addition to mainly using the carrier (a), so that the reset correction value is 0 for the carrier (a), 1 for the carrier (b), 2 for the carrier (c), and so on. Shall be. In the block using the next carrier b, since the carrier a is not used, for example, the reset correction value is replaced between the carriers a and b. Similarly, since the carrier b is not used in the block using the next carrier c, the reset correction value is replaced between the carriers b and c, and in the block using the last carrier a, the carrier c is used. ), The reset correction value is replaced between the carriers (c, a). In the block using the carrier (b) and the block using the carrier (c), since the carrier is not used, the carrier (b) is shifted to the right as the stop position is shifted to the right with increasing the knitting width and the like. , c) and the like. Thus, similarly to Fig. 5, the stop position of the interfering carrier is shifted to the far side from the knitting width to avoid the interference.

Fig. 8 shows the reset correction value in the knitting of the in yarn in the modification, and the carrier for the insha is just above the end of the knitting width and the position of changing the yarn so that the yarn hangs just below the vertical direction. You can stop from above. In this case, the area knitted by one carrier is regarded as one knitting width, and the part 34 is treated as having two knitting widths in the course direction, and since the minimum value is 0, the reset correction value The stop position at zero is a boundary between both ends of the part 34 and the area. The part 34 is divided into two upper and lower blocks, and since the carriers a and b are used in the first block, a small reset correction value is assigned to the carriers a and b. Since d) is used, a small reset correction value is assigned to the carriers c and d. Note that the block using the carriers a and b is larger than the block using the carriers c and d, and the reset correction value for the lower block is also effective for the upper block. It is the same as the embodiment of 5.

In the embodiment, the following effects are obtained.

(1) The data at the stop position of the carrier can be automatically generated.

(2) Interference between carriers can be eliminated.

(3) By determining the reset correction value according to the frequency of use of the carrier, the moving distance of the carriage can be shortened. Therefore, the time required for organization can be shortened.

2: front bed
4: back bed
6: gap
8 to 11: carrier rail
12: carrier
14-16: knitting width
20: organization data generation device
21: user interface
22: network interface
23: disk drive
24: Memory
25: program memory
26: converter
27: use recovery section
28: block extraction unit
29: reset correction value allocation unit
30: interference check unit
32 to 34: parts

Claims (5)

At least one pair of needle beds before and after, a carriage for manipulating the needle bed needles, a plurality of carrier rails, and a needle along the individual carrier rails, interlocked with the carriage In the method of automatically generating knitting data for a flat knitting machine having a plurality of carriers for supplying a yarn to a yarn,
A step of obtaining data indicating the course of the carriage using the carrier and the moving range of the carrier in each part of the garment for each carrier used for the knitting;
Determining a stop position of a carrier for each carrier based on the data;
If it is detected that the stop position of the carrier overlaps in the perpendicular direction in the horizontal plane in the longitudinal direction of the needle bed, the step of changing the stop position so that the carrier does not overlap
A method of generating knitting data for flat knitting machines, characterized in that it is executed.
At least one pair of front and rear needle beds, a carriage for operating the needles of the needle beds, a plurality of carrier rails, and a plurality of carriers linked to the carriages along the respective carrier rails and for supplying thread to the needles of the needle beds; An apparatus for automatically generating knitting data for a flat knitting machine,
Analysis means obtained for each of the carriers used in the formation of data representing the course of the carriage using the carrier and the moving range of the carrier in one part of the garment,
Based on the data, the stop position of the carrier is determined for each carrier, and when the stop position of the carrier is detected to overlap at right angles in the horizontal plane in the longitudinal direction of the needle bed, the stop position is determined to change the stop position so that the carrier does not overlap. Sudan (을 定 手段)
An apparatus for generating knitting data for a flat knitting machine, comprising:
The method of claim 2,
The stop position determining means determines the stop position such that the carrier having a large number of times of use is stopped near the end of the knitting width, and the carrier having a small number of times of use is stopped at a position away from the end of the knitting width. Device.
The method of claim 3,
And the stop position determining means determines the stop position based on the number of times of use in the parts unit.
The method of claim 3,
By the analyzing means, the part is divided into a plurality of blocks in the wale direction, and the stop positioning means determines the stop position based on the number of times of use in the block unit. Generating device.

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