JP2000336563A - Knitting in flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To knit various knitted fabrics without changing a interval of feeder dogs. SOLUTION: This weaving method comprises setting a standard position A of knitting patterns 10 and 12 at a position displaced in the advance direction of a knitting needle from a feeder dogs original position of the knitting patterns 10 and 12. Consequently, an interval between front and rear knitting needles at the standard position is reduced by the displaced degree of the standard position. In the case of knitting a rib stitch, a knitted fabric with a low loop height can be knitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for knitting a knitted fabric by a flat knitting machine.

[0002]

2. Description of the Related Art In a flat knitting machine, knitting is performed by advancing and retracting a knitting needle in accordance with a knitting pattern which is a moving pattern thereof. Such a knitting pattern is generally represented as a diagram in which the vertical axis is the displacement amount of the knitting needle and the horizontal axis is the time or the relative distance between the position of the yarn feeder and the position of the knitting needle.

As shown in FIG. 1, a knitting pattern includes a reference position A, which is a knitting needle standby position where knitting needles wait for knitting, a most advanced position B, from which the knitting needle is advanced most, and a knitting needle. And a displacement amount of a yarn feeding standby position C in which the knitting needle stands by to receive a knitting yarn and a last retreat position D in which the knitting needle retreats most for forming a stitch (in the present invention, referred to as a "stitch forming position"). It is determined.

In the above-described knitting pattern, the most advanced position B and the yarn supply standby position C of the knitting needle are generally selected to be optimal positions according to the mechanical structure of the flat knitting machine.

In the conventional knitting pattern, as shown by the broken line in FIG. 1, the reference position A is set to coincide with the tooth positions of the front and rear needle beds. That is, conventionally,
The knitting pattern is set such that the position of the tooth gap is the origin and the reference position A is the origin of the tooth gap. Therefore, in the conventional flat knitting machine, the interval between the teeth of the front and rear needle beds is the interval between the knitting needles at the reference position.

In such a conventional flat knitting machine, when the gap between the teeth is widened, the following problems occur.

A) When knitting yarn is supplied to opposing knitting needles on the front and rear needle beds and knitting is performed as in rubber knitting or the like, the length of the knitting yarn extending between knitting needles corresponding to the time of forming the stitch becomes large. Therefore, the loop height (that is, the loop length) is inevitably increased, and as a result, the thickness of the knitted fabric is increased, and a thin knitted fabric cannot be formed.

B) In order to reduce the thickness of the knitted fabric, the stitch (the amount of knitting yarn drawn in by the knitting needle) must be reduced, but if the stitch is too small, knockover becomes difficult and knitting is difficult. Defectiveness or the like occurs, leading to a reduction in the quality of the knitted fabric. Therefore, as a result, the knitted fabric cannot be made very thin.

On the other hand, if the gap between the teeth is narrow, even when knitting a thin knitted fabric by rubber knitting, the stitch can be made relatively large, so that knockover becomes easy, and There is no risk of lowering the quality of the knitted fabric.

However, if the gap between the teeth is narrow, the knitted fabric is jammed between the front and rear needle beds, and the knitted fabric cannot be smoothly lowered, which may cause a knitting failure. The problem occurs. Therefore, in a flat knitting machine having a structure in which the gap between the teeth is narrow, the types of knitted fabric that can be knitted are limited, and it is not possible to cope with various knitting.

In the flat knitting machine, due to its structure,
The gap between the teeth, ie, the distance between the needle beds, cannot be easily changed. Therefore, a flat knitting machine cannot be configured to have a narrow gap between teeth, which is limited by knitted fabrics that can be knitted, and it is inevitably configured to have a wide gap between teeth. As a result, in the flat knitting machine, the problems a) and b) described above remain.

Further, in a conventional flat knitting machine having a carriage, if only the origin of the tooth gap is raised,
At the same time, the mountain cam must be raised.
In general, in a conventional flat knitting machine having a carriage, there is a limit in raising the stitch cam, so that even if the stitch is further reduced, the stitch cannot be set to a certain value or less.

[0013]

Therefore, in a flat knitting machine, it is important that knitting can be performed without being limited by the thickness of the knitted fabric, even if knitting of various kinds of knitted fabrics is possible.

[0014]

A knitting method in a flat knitting machine according to the present invention includes setting a reference position of a knitting pattern to a position displaced in a knitting needle advancing direction from a tooth gap origin position of the knitting pattern.

When the reference position is displaced in the direction of advance of the knitting needle from the origin position of the tooth gap, the distance between the front and rear knitting needles at the reference position becomes smaller by the displacement of the reference position. Thereby, when knitting rubber knitting or the like, it is possible to knit a knitted fabric having a small loop height, that is, a so-called closed knitted fabric. As a result, the length of the knitting yarn in the thickness direction of the knitted fabric is reduced, so that a thin knitted fabric can be knitted even with a flat knitting machine having a wide gap between teeth.

For the same reason, knitting a knitted fabric similar to a flat knitting machine having a finer gauge even if the flat gauge of the flat knitting machine is coarse (the number of knitting needles per inch is small). And the versatility of the knitting machine is further expanded.

The amount of displacement of the stitch forming position from the reference position may be arbitrarily set. According to this configuration, by knitting one knitted fabric using a plurality of knitting patterns having different displacement amounts from each other, a plurality of knitted fabrics having different thickness dimensions at a plurality of locations, in particular, a plurality of rubbers having different thickness dimensions are provided. A knitted fabric having a knitted portion can be knitted.

In knitting a single knitted fabric, a plurality of knitting patterns having different reference positions can be used in combination. By doing so, for example, a conventional knitting pattern in which the tooth position is a reference position (origin position) and a knitting pattern of the present invention in which the reference position protrudes from the tooth are used in combination, It is possible to knit a knitted fabric in which a thin rubber knit and a thick rubber knit, which cannot be performed, are mixed, and the knitted fabric can be changed.

[0019]

FIG. 1 shows a knitting pattern 10 according to the present invention in which the vertical axis represents the displacement of a knitting needle and the horizontal axis represents the relative distance between the position of the yarn feeder and the position of the knitting needle. Examples are shown by solid lines. In FIG. 1, the position of the tooth mouth origin is 0.
mm.

The knitting pattern 10 includes a reference position A, which is a needle standby position where the knitting needles wait for knitting, and a knitting needle which is advanced from the reference position A by a predetermined amount to open the knitting needle spatula.
A most advanced position B where the thread is advanced most to release the locked loop, and a yarn feeding standby position C where the knitting needle is retracted by a predetermined amount from the most advanced position B and waits to receive a knitting yarn.
And a last retreat position at which the knitting needle is most retracted for forming a stitch, that is, a stitch forming position D.

In the knitting pattern 10, the reference position A and the stitch forming position D are the positions of the teeth (origin position = 0 mm)
That is, it is set at a position displaced in the advance direction of the knitting needle from those in the conventional knitting pattern.

On the other hand, the most advanced position B and the yarn supply standby position C are set at the same positions as those in the conventional knitting pattern. Further, the stitch forming position D is displaced in the forward direction of the knitting needle by the same amount as the displacement of the reference position A from that in the conventional knitting pattern.

However, when creating the knitting pattern A, the reference position A and the stitch forming position D may be set at arbitrary positions protruding from the origin of the tooth opening by an arbitrary amount in the forward direction of the knitting needle. Similarly, the most advanced position B and the yarn supply standby position C are
It may be set at an arbitrary position different from those of the conventional knitting pattern.

The knitting needle is first advanced from the standby position A toward the most advanced position B, then retracted from the most advanced position toward the yarn supply standby position C, and then waits for a predetermined time at the yarn supply standby position C. After a lapse of time, the robot is further retracted from the standby position C toward the stitch formation position D, then advances again from the stitch formation position D, returns to the reference position A, and waits at the reference position A for forming the next loop.

In the knitting pattern A, the reference position A and the stitch forming position D are set at positions protruding in the forward direction of the knitting needle from those of the conventional knitting pattern with the origin of the tooth opening as the reference position. The yarn supply standby position C is set at the same position as those in the conventional knitting pattern. Therefore, as compared with the conventional knitting pattern, the reciprocating movement distance of the knitting needle is shorter, and the amount of drawing in of the knitting yarn by the knitting needle is smaller.

FIG. 2 shows a knitting pattern A shown by a solid line in FIG.
1 shows an embodiment of a flat knitting machine 20 used for knitting according to the present invention. In the weft knitting machine 20, the front and rear needle beds 22 extending in the width direction are arranged in a frame (not shown) in a figure shape at intervals in the front and rear direction. Each needle bed 22 has a longitudinal direction defined as a left-right direction (a direction perpendicular to the paper surface in FIG. 2).

On each needle bed 22, a plurality of knitting needles 24 are arranged in parallel in the longitudinal direction of the needle bed 22 so as to extend in the width direction of the needle bed 22. Each of the knitting needles 24 has a hook 26 at a distal end thereof for hooking a knitting yarn and a spatula 28 for opening and closing an opening of the hook 26.

Each knitting needle 24 is reciprocated in the longitudinal direction according to a knitting pattern shown by a solid line in FIG. 1 by an actuator 30 such as a linear motor during knitting. Each actuator 30 is also arranged on the needle bed 22 on which the corresponding knitting needle 24 is arranged. For this reason, the flat knitting machine 20
Is to connect each knitting needle 24 to the actuator 3 instead of the cam.
It is a carriageless type flat knitting machine moved by 0.

When each knitting needle 24 is located at the reference position A in the knitting pattern 10 shown by the solid line in FIG. 1, the hook 26 slightly protrudes from the tooth gap 32 of the corresponding needle bed 22 as shown by the solid line in FIG. Let me. In the illustrated example, each tooth gap 32 is formed by the upper edge of the needle bed 22 in the width direction.

The weft knitting machine 20 is provided with the same number of yarn feeders 34 as the number of knitting yarns to be used, and each yarn feeder 34 is moved right and left above the needle bed 22 by a drive mechanism (not shown in FIG. 2).
(In a direction perpendicular to the paper). Each knitting yarn is supplied from a yarn feeder 34 to an upper portion between the needle beds 22 and the knitting needles 24 are supplied.
Is locked to the hook 26 of the knitting needle 24 by moving forward and backward. Thereby, a loop of the knitting yarn is formed by each knitting needle 24.

The wrench 28 of each knitting needle 24 is displaced by the knitting yarn locked when the knitting needle 24 advances and retreats, and opens and closes the hook 28. However, the spatula 28 of the knitting needle 24 that does not lock the knitting yarn is displaced by the latch opener 38 assembled to the needle bed 22 by the assembling tool 36 to open and close the hook 26.

Each knitting needle 24 returns from the standby position A to the reference position A via the most advanced position B, the yarn feeding standby position C and the stitch forming position D in accordance with the knitting pattern 10 shown by the solid line in FIG. At the reference position A to form a loop. In FIG. 2, the state in which the knitting needle 24 is located at the most advanced position B is indicated by reference numeral 24B, and the knitting needle is in the yarn feeding standby position C.
Is indicated by reference numeral 24C.

When the reference position A is displaced in the forward direction of the knitting needle 24 from the position (0 mm) of the mouth opening origin as described above, the knitting needles of the front and rear needle beds 22 at the reference position A by the displacement of the reference position A. 24 become smaller. Thereby, when knitting rubber knitting or the like, it is possible to knit a so-called closed knitted fabric having a small loop height dimension (loop length dimension). As a result, the length of the knitting yarn in the thickness direction of the knitted fabric is reduced, so that a thin knitted fabric can be knitted even if the gap between the teeth is wide.

For the same reason, even if the gauge of the flat knitting machine is coarse (the number of knitting needles per inch is small),
A knitted fabric similar to a flat knitting machine having a finer gauge than such a flat knitting machine can be knitted, and thus the versatility of the knitting machine is further expanded.

FIG. 3 shows an embodiment of an electric circuit system of the flat knitting machine 20 for executing the above knitting operation.
The knitting needle 24 and the knitting yarn 40 show a state in which the rubber knitting is being knitted.

Referring to FIG. 3, each knitting yarn 40 is wound around a yarn feeder 42 and extends from the corresponding yarn feeder 42 to the corresponding yarn feeder 34. Each yarn feeder 24 is reciprocated in the left-right direction by the corresponding moving mechanism 44.

The knitting information for knitting operation is created in the design system 46 in advance, and is stored in the main controller 50 by a predetermined storage medium 48 such as a floppy disk or a compact disk.

The knitting information includes one or more knitting patterns indicated by solid lines in FIG. 1, a code for specifying the knitting pattern for each knitting needle and each course, a code for specifying the yarn feeder used for knitting and its moving direction for each course, and a needle. It includes various other knitting data necessary for knitting, such as a code for specifying the position and moving direction of the floor for each needle bed and each course, a code used for controlling the lowering of the knitted fabric.

The main controller 50 creates control signals necessary for controlling the knitting needles 24 and the yarn feeder 34 based on the stored knitting information, and transmits those control signals to the needles 30 for the actuator 30 and the moving mechanism 34. It is supplied to the carrier controller 52.

The needle / carrier controller 52 operates the actuator 30 and the moving mechanism 44 based on various control signals supplied from the main controller 50. Thereby, the predetermined knitting needle 24 is moved forward and backward according to the predetermined knitting pattern, and the predetermined yarn feeder 34 is moved in the left-right direction.

The main controller 50 also controls the needle bed 2
2 and other control signals required for knitting, such as control signals required for controlling the knitted fabric lowering control, are created based on the stored knitting information. (Not shown).

When the knitting pattern is created by the design system 46, the reference position A or the stitch forming position D may be set to an arbitrary position protruding from the origin of the tooth opening by an arbitrary amount in the forward direction of the knitting needle. FIG. 4 shows an example of a plurality of knitting patterns 12 having different protrusion amounts of the stitch forming position D from the tooth mouth origin.

If a plurality of knitting patterns having different protrusion amounts of the stitch forming position D from the tooth mouth origin are selectively used for knitting one knitted fabric, knitted fabrics having different thickness dimensions at a plurality of locations, particularly thicknesses It is possible to knit a wide variety of knitted fabrics having different patterns depending on the thickness dimension, such as a knitted fabric having a plurality of rubber knitted portions having different dimensions.

Further, if a plurality of knitting patterns having different reference positions A are used together for knitting of one knitted fabric, for example, a conventional knitting pattern in which the tooth position is a reference position (origin position), By using a knitting pattern of the present invention that protrudes from the mouth, it is possible to knit a knitted fabric in which thin rubber knitting and thick rubber knitting, which could not be conventionally performed, are mixed, and the pattern is thickened. The knitted fabric can be changed, for example, by changing the size.

When a plurality of knitting patterns are used for knitting the same knitted fabric, the main controller 50 selects a knitting pattern corresponding to the knitting course of the knitting needle for each knitting needle 24, and sends a control signal based on the pattern to the needle / needle. It is supplied to the carrier controller 52. The change of the knitting pattern may be performed on a course basis or on a wale basis.

The present invention is not limited to the above embodiment, but can be variously modified without departing from the gist of the present invention. For example, the present invention can be implemented not only by a carriage-less flat knitting machine but also by a carriage-type flat knitting machine in which a knitting needle is reciprocated by a cam.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a knitting pattern.

FIG. 2 is a diagram showing an embodiment of a flat knitting machine.

FIG. 3 is a block diagram showing an embodiment of an electric circuit meter of the flat knitting machine.

FIG. 4 is a diagram showing another embodiment of a knitting pattern.

[Explanation of symbols]

 10, 12 Knitting pattern 20 Flat knitting machine 22 Needle bed 24 Knitting needle 30 Actuator for driving knitting needle 32 Tooth opening 34 Yarn feeder 38 Latch opener 42 Yarn feeder 44 Moving mechanism for yarn feeder 48 Storage medium A Reference position B Most advanced position C Y-feed standby position D-th forming position

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D04B 15/82 308 D04B 15/82 308 (72) Inventor Shinichi Miyagawa 5-18-18 Nomachi, Kanazawa City, Ishikawa Prefecture No. F term in Tsudakoma Kogyo Co., Ltd. (reference) 4L002 BA02 EA00 FA01 4L054 AA01 AB02 AB03 AB08 BA09 CA01 CA02 CA03 CA06 CA08 CB03 DA05 HA03 JA01 LA02 NA07

Claims (4)

[Claims] 1. A knitting method in a flat knitting machine for knitting by moving a knitting needle forward and backward according to a knitting pattern,
A knitting method for a flat knitting machine, comprising setting a reference position of the knitting pattern to a position displaced in a knitting needle advancing direction from an origin position of a mouth of the knitting pattern. 2. The knitting method according to claim 1, wherein the knitting pattern can arbitrarily set a displacement amount of a stitch forming position from the reference position. 3. The knitting method according to claim 1, wherein the knitting of a single knitted fabric includes using a plurality of knitting patterns having different reference positions. 4. A knitting method in a flat knitting machine for performing knitting by moving a knitting needle forward and backward with respect to a reference position according to a knitting pattern including a most advanced position of the knitting needle and a yarn feeding standby position, wherein the reference position of the knitting pattern is set to a tooth. A knitting method for a flat knitting machine, including setting the position at a position displaced in a forward direction of a knitting needle from a mouth origin position.