KR20080033086A - Tandem knitting method and flat knitting machine - Google Patents

Abstract

A tandem knitting method and a flat knitting machine are provided to enable a first carriage to trespass on a knitting region organized by a second carriage, at the tandem knitting time, thereby increasing a width of the knitting region even without increasing a width of the carriage. Cam mechanisms(15a,15b) are respectively mounted on carriages(13a,13b). Needle-selecting mechanisms(17L,17R) are installed at both sides of a cam lock(16) of each cam mechanism. The needle-selecting mechanisms perform a two-stage needle-selecting operation, which is divided into a preliminary needle-selecting operation and a primary needle-selecting operation, thereby preventing a carriage width and a stroke width from being increased. A controller(18) controls a knitting needle in a field, where the carriage trespasses on a knitting region(14a), to perform a compensation needle-selecting operation, based on a preset knitting data and traveling positions of the carriages, thereby restoring a preliminary needle-selecting state.

Description

TANDEM KNITTING METHOD AND FLAT KNITTING MACHINE}

The present invention relates to a tandem knitting method and a flat knitting machine for simultaneously knitting a plurality of knitted fabrics by a plurality of carriages.

Background Art Conventionally, in flat knitting machines, the carriage is reciprocated in the longitudinal direction of the needle bed, and the knitting needles installed side by side on the needle bed are selectively driven by a cam mechanism mounted on the carriage to knit the knitted fabric. It is also known that a plurality of knitted fabrics can be efficiently and simultaneously knitted by reciprocating a range corresponding to the knitted width of the knitted fabric so as to knit the knitted fabrics in parallel with each other in a plurality of spaced apart carriages (for example, a patent document). 1 and Patent Document 2).

It is possible to knit a plurality of knit fabrics simultaneously even if the carriage is switched reciprocally in the entire range of the needle bed for knitting such a plurality of knit fabrics to switch each knit fabric. However, since the stroke that the carriage reciprocates becomes large, the production efficiency of the method of knitting a knitted fabric by using a plurality of carriages in parallel is increased. Hereinafter, the method of knitting a knitted fabric in parallel is described as a "tandem knitting method". In addition, in the flat knitting machine disclosed in Patent Document 1, four sets of cam mechanisms are used for one needle bed. At the time of tandem knitting, two sets of cam mechanisms are mounted on two carriages, and each carriage is used as a two cam machine. When two carriages are connected, the large knitted fabric which uses near the full width of a needle bed can be knitted as a 4 cam machine. Similarly, if two carriages are provided, tandem knitting of 3 cams is possible for 6 cams, and tandem knitting of 4 cams is possible for 8 cams, respectively.

In the flat knitting machine, not only the knitting operation of the basic knit is performed on the knitting needle, but also various structure patterns can be formed by combining a tuck or a miss. In order to freely knit a tissue pattern, it is necessary to be able to select at least one of three types of knitting operations of knit, tuck, and miss for each knitting needle used for knitting. At the same time when the carriage travels along the needle bed, there are two types of operations that can select each needle on and off. Therefore, a complete selection of three types of knitting operations is performed by combining two selections. It becomes possible (for example, refer patent document 3).

The cam mechanism mounted on the carriage includes a lock which is a combination of a cam for driving the knitting needle and a needle tip mechanism for preselecting the action of the knitting needle by the lock. Patent Literature 3 discloses a configuration in which a needle tip member serving as a step needle tip mechanism is provided on both front and rear sides of the lock. The needle needle is placed in two groups by the needle needle which is already finished knitting by the needle needle member located behind the running direction of the carriage. This needle is called a "preliminary needle". Subsequently, at the time of reversal of the carriage, one group needle among two groups divided by the preliminary needle was further sorted into two groups by a needle member positioned in the front of the carriage in the driving direction, and the needle was divided into three positions. Can be picked. Hereinafter, the line needle made with respect to the knitting needle of the state of a preliminary needle is called "main line needle." In other words, when the same needle member performs a preliminary needle needle, the needle tip is inverted and returned.

Fig. 11 shows a knit area of a knit fabric in a tandem knit under the premise that the preliminary needle and the main needle are divided. In flat knitting machine 1, it is assumed that needle bed 2 can be used for knitting in the range of, for example, 2286 mm (90 inches). If tandem knitting is performed using two carriages 3a and 3b, knit fabrics up to, for example, 939.8 mm (37 inches) of knitted widths La and Lb can be knitted in knitting regions 4a and 4b, respectively. However, it is necessary to arrange the area which does not knit a knitted fabric of 406.4 mm (16 inches) as width Lc between the knitting areas 4a and 4b. This area is required as a free space so that the carriages 3a and 3b do not enter the other knitting areas 4b and 4a even if they exit the knitting areas 4a and 4b. The cam mechanisms 5a and 5b for preliminary needle needles are provided with needle needle mechanisms 7L and 7R on both sides of the cam lock 6, respectively.

Fig. 11A shows each of the knitted fabrics in the knitted regions 4a and 4b when the carriages 3a and 3b are located on the right side of the corresponding knitted regions 4a and 4b and the carriages 3a and 3b run in the left direction of the drawing. Indicates the state just before starting the formation. The knitting needles in each of the knitting regions 4a and 4b are preliminarily pre-seated with the needle tip mechanism 7L to be the trailing side when the preceding right turns are carried out by the carriages 3a and 3b. The carriage 3a on the left side does not penetrate into the knitting area 4b on the right side, and thus does not damage the preliminary needle position. When the carriages 3a and 3b reverse the running direction and start left, the knitting needles of the knitting areas 4a and 4b are operated by the main needle by the needle needle mechanism 7L from the right side of the drawing, It is driven by the needle position. The needle tip mechanism 7R, which is the trailing side with respect to the cam lock 6, makes a preliminary needle tip for the next cam lock 6. The control for the preliminary needle and the main needle in the needle tip mechanisms 7L and 7R is performed based on the knitting data set in advance in the controller 8.

Fig. 11B shows a state immediately before each carriage 3a, 3b ends the left row and starts the right. The starting needle mechanism 7R, which is the trailing side with respect to the cam lock 6 at the left side, becomes the leading side at the right side, and the cam needle 6 is subjected to two stages of preliminary needle as the trailing side and the main needle as the leading side. The cam lock 6 also includes cams provided in pairs on both sides of the travel direction and alternately mounted in the travel direction (see Patent Document 4, for example). Patent Literature 4 discloses a configuration in which a select jack clearing cam is mounted in a traveling direction.

Patent Document 1: Japanese Patent No. 2753602

Patent Document 2: Japanese Patent Application Laid-Open No. 61-63754

Patent Document 3: Japanese Patent Application Publication No. 61-20670

Patent Document 4: Japanese Patent Application Laid-Open No. 5-156553

As shown in Fig. 11, in the flat knitting machine 1 having the needle needle mechanisms 7L and 7R in which the two-step needle is divided into a preliminary needle and a main needle, the carriages 3a and 3b have a margin between the knitting areas 4a and 4b during tandem knitting. The area | region which becomes a space is arrange | positioned, the travel of the carriages 3a and 3b is stopped in the area | region which becomes a clearance space, and the pre-needle state is not damaged. For this reason, the knitting widths La and Lb of the knitted fabric which can be knitted by tandem knitting are restricted.

In tandem knitting disclosed in Patent Literatures 1 and 2, penetration of the carriage into the other knitted fabric is allowed, and the distance between the knitted fabrics is narrowed, so that a wider knitted fabric is knitted from the same needle bed. It is expected to be possible. However, Patent Documents 1 and 2 do not describe how to do acupuncture. In the left column (ninth column) of the fifth page of Patent Document 1, lines 15 to 23, the cam system of the carriage does not act against the knitting needle even if the carriage is located inside the knitting needle space corresponding to the adjacent knitted fabric. As a result, it is described that the yarn of the yarn guide interlocking with the carriage is not caught by the knitting needle. It is understood that this description is based on the premise that a two-stage complete preemption can be performed only by the preemption mechanism which becomes the head of the carriage along the driving direction of the carriage. Since a complete needle may be provided only by the first tip mechanism when the carriage invades the area allocated to the carriage, it is possible to evacuate the position where the needle does not hold the thread when the carriage exits the area allocated to the carriage.

Even if a carriage assigned to another area invades the area where the needle needle is unable to hold the thread, if the needle needle mechanism of the intruded carriage keeps the needle needle evacuation state, it will not cause the effect of intrusion. You can do that.

However, such a complete line needle is performed in succession of two stages of line needle as shown by patent document 3 at once. This increases the width of the needle tip mechanism. Since the needle tip mechanism is provided on both sides reciprocating with respect to the carriage, the width of the carriage becomes large. When the width of the carriage becomes large, it is necessary to travel the range of stroke including the knitting area and the width of the carriage at the time of knitting, and the running stroke becomes large and the productivity decreases.

An object of the present invention is to provide a tandem knitting method and a flat knitting machine which can penetrate into a knitting area of another carriage at the time of tandem knitting without increasing the carriage width, and can increase the width of the knitting area.

The present invention uses a plurality of carriages reciprocating along a longitudinal direction of a needle bed by mounting a cam mechanism for single needle driving in a flat knitting machine, and assigns each carriage an area of a needle bed set so as not to overlap. In the tandem knitting method for simultaneously knitting a knitted fabric, the needle mechanism which becomes the last when the cam mechanism mounted on each carriage escapes from the area allocated to the carriage among the needle mechanisms provided on both sides of the traveling direction. The preliminary needle needle is left as a preliminary needle needle, and the needle needle mechanism becomes the best needle needle when the carriage reverses the driving direction and enters the area again. , Assign to another area in the preemptive area The tandem knitting, characterized in that, even when the carriage is invaded and the pre-needle state of the needle needle is changed, a compensation needle is performed when escaping from the area where the carriage has invaded to restore the pre-needle state of the needle needle in the intruded area. It is a way.

In addition, the present invention provides a plurality of knitted fabrics by mounting a needle mechanism driving cam mechanism and using a plurality of carriages reciprocating along the longitudinal direction of the needle bed and allocating an area of the needle bed to be set so as not to overlap. In the tandem knitting machine which simultaneously knits, the cam mechanism on which each carriage is mounted has a tip needle mechanism on both sides of the traveling direction, and is placed on the tip needle mechanism which is the last when escaping from the area allocated to the carriage. By preliminary needle needle of the needle needle to leave a preliminary needle needle state, the needle tip mechanism becomes the best needle needle when the carriage reverses the driving direction and enters the area again, and the main needle needle for the needle needle in the pre-needle state, Is assigned to another zone in the preemptive zone And control means for controlling to restore the preliminary needle state of the needle needle in the invaded area even when the carriage is invaded and changes the preliminary needle state. It is a flat knitting machine characterized by the above-mentioned.

Further, in the present invention, the control means controls the premature needle mechanism, which is the best head when the carriage assigned to the other area, enters the preliminary needle needle state, so as to be inoperative with respect to the needle needle in the prenee needle state. It is characterized by.

Further, in the present invention, the needle mechanism, the actuator for acting on the needle for butt of each needle needle to switch whether the needle needle state in which the needle needle is floating from within the needle groove or the non-needle state sinking in the needle groove, And a displacement driving cam which can be switched whether or not the needle needle in the needle position is rotated to a predetermined predetermined position in the needle groove, and the control means controls the needle tip mechanism to be inactive. In this case, the actuator is switched to be inactive, and the displacement driving cam is also switched to be inactive.

According to the present invention, when the tandem knitting for knitting a plurality of knitted fabrics at the same time, the carriage is allowed to enter the area assigned to the other carriage, so that the distance between the areas can be narrowed and the width of the area can be increased. Can be. Since the needle tip mechanisms provided on both sides of each carriage divide the preliminary needle needle when escaping from the assigned area and the main needle needle when invading the allocated area after reversing the driving direction, the width required for the needle tip is determined by a single step needle. What is necessary is just to respond | correspond, and can make a carriage width smaller than corresponding to a two-stage line needle. Since the carriage width is small, the stroke width at which the carriage travels can also be made small. Even if the carriage breaks into the non-assigned area and changes the pre-needle state of the needle needle, the pre-needle area of the needle needle in the intruded area is restored because the compensation needle is used when the carriage escapes from the intruded area. The knitting of the fabric in Esau can be prevented from occurring.

Further, according to the present invention, when the tandem knitting in the flat knitting machine, one carriage can enter the area allocated to the other carriage, the distance between the areas can be reduced, and the width of the knitted fabric can be increased. . Since the needle tip mechanisms provided on both sides of each carriage divide the preliminary needle needle when escaping from the assigned area and the main needle needle when invading the allocated area after reversing the driving direction, the width required for the needle tip is determined by a single step needle. What is necessary is just to respond | correspond, and can make a carriage width smaller than corresponding to a two-stage line needle. Even if the control means changes the preliminary needle state of the needle needle of the area where the carriage has intruded into an area other than the allocated area, the control means provides a preemptive needle needle state of the needle needle in the invaded area when the carriage escapes from the invaded area. By restoring, the effects of intrusion can be eliminated.

In addition, according to the present invention, when the carriage intrudes into an area other than the allocation, the preliminary needle state can be easily maintained because the tip needle mechanism, which is the top head, is inactive so as not to change the preneedle state of the single needle of the invading area. Can be.

In addition, according to the present invention, in the needle needle mechanism, an actuator for switching between the needle needle state in which the needle needle is injured from within the needle groove and the non-needle needle sinking in the needle groove is inoperative in the needle needle mechanism. Since it is switched to, the state is maintained if the knitting needle rises from the needle groove by the preliminary needle. Since the displacement driving cam is also switched so as to be inactive, there is no effect of rotationally displacing the knitting needle floating from the needle groove to a predetermined selected position, so that the preliminary needle needle state can not be damaged.

EXAMPLE

1 schematically shows a schematic configuration of a flat knitting machine 11 according to one example of the practice of the present invention.

The flat knitting machine 11 basically has the same specifications as the flat knitting machine 1 shown in Fig. 11, and the needle bed 12 as a whole can be used for knitting, for example, in the range of 2286 mm (90 inches).

The needle beds 12 are installed in a pair of front and rear, and each carriage 13a and 13b are integrally connected to portions corresponding to the pair of front and rear needle beds, respectively. At the time of tandem knitting, the knitted fabrics of knitting widths La and Lb of, for example, 1066.8 mm (42 inches) can be knitted in the knitting regions 14a and 14b, respectively. This is because a space 14c of 152.4 mrn (6 inches) can be disposed in the width Lc without having to arrange a large space of the carriages 13a and 13b in the middle of the knitting areas 14a and 14b. This space 14c is used to switch and set the cams and presses of the cam mechanism mounted on the carriages 13a and 13b, the stitch pressers attached to the carriages 13a and 13b, and the like. It is formed to enable even when the maximum. If the traveling speed is temporarily reduced, the required space 14c is also narrowed, and the knitting width that can be knitted can be further increased. The cam mechanisms 15a and 15b mounted on the carriages 13a and 13b are provided with the pin needle mechanisms 17L and 17R on both sides of the cam lock 16, respectively. The movable portions of the cam lock 16 and the pin needle mechanisms 17L and 17R are controlled by the controller 18 based on the knitting data set in advance and the traveling positions of the carriages 13a and 13b.

Fig. 1 (a) shows that each of the carriages 13a and 13b is located on the right side of the corresponding knitting areas 14a and 14b, and the carriages 13a and 13b travel in the left direction of the drawing so that the knitting fabrics are knitted in the knitting areas 14a and 14b, respectively. Indicates the state just before starting. The knitting needles in each of the knitting regions 14a and 14b are preliminarily pinched by the needle tip mechanism 17L to be the trailing side when the carriages 13a and 13b are preceded in the rightward direction. Since the carriage 13a on the left side enters the knitting region 14b on the right side, the preliminary needle needle may be damaged. When the carriages 13a and 13b invert the traveling direction and start left, the knitting needle in the range in which the carriage 13a invades in the knitting area 14b is restored by the preliminary needle tip state by the compensation needle needle when the carriage 13a escapes. The knitting needles of the knitting regions 14a and 14b are operated by the main needle by the needle needle mechanism 17L from the right side of the drawing, and are driven by the cam lock 16 in accordance with the needle needle state. The needle tip mechanism 17R, which is the trailing side with respect to the cam lock 16, makes a preliminary needle tip for the next cam lock 16. The compensation for the needle tip and the preliminary needle and the main needle by the needle tip mechanisms 17L and 17R are executed based on the knitting data set in advance by the controller 18.

1 (b) shows a state immediately before each carriage 13a or 13b ends the left line and starts the right line. At the left side, the starting mechanism 17R, which is the trailing side with respect to the cam lock 16, becomes the leading side at the right side, and the camlock 16 is subjected to two stages of the preliminary first needle at the left and the main needle at the right. However, the right carriage 13b invades the knitting region 14a on the left side. The effect of this intrusion is eliminated by the compensating needle tip at the time of escape, and the reserve needle state is restored.

As described above, the tanning at the time of tandem knitting is made possible by extending the range of the starting needle data required for each of the carriages 13a and 13b outside the knitting areas 14a and 14b allocated to each. In the case where the conventional method shown in FIG. 11 is applied, in FIG. 1, first carriage data relating to the knitting needle from the left end first to the right end first in each of the knitting areas 14a and 14b assigned to each of the carriages 13a and 13b is used. do. The knitting data decreases, but occupies a wide space 14c, which becomes a medium width, so that each of the carriages 13a and 13b exceeds the ranges of the left knitting area 14a and the right knitting area 14b, respectively, which are different from each other. In order not to invade 14a, the space 14c which is medium width should be widened. When the left and right carriages 13a and 13b use the needle point data from the first left end to the right end first of the needle bed 12, in particular, the needle point data including the knitting area 14a and the knitting area 14b, respectively.

FIG. 2 shows an example of the configuration of the knitting needle 20 provided side by side on the needle bed 12 of the flat knitting machine 11 of FIG. In the needle needle 20, the sliding displacement of the needle bed 12 that moves forward and backward with respect to the needle bed gap opposite to the front and rear needle beds 12 is formed in the needle grooves formed parallel to the traveling directions of the carriages 13a and 13b in the needle beds 12 of the flat knitting machine 11. Accepted as possible. In needle 20, the needle jack 22 is coupled to the rear of the needle body 21. The needle jack 22 includes a knitting movement butt 23 and a co-movement action butt 24 which are acted upon by the cam mechanisms 15a and 15b of the carriages 13a and 13b, respectively. In the needle jack 22, the select jack 25 acts on the rear portion of the knitting movement butt 23. The selector 26 acting on the select jack 25 is a needle for selecting a needle at one of eight positions, for example, indicated by a broken line, between the upper and lower butts 26a and 26b for positioning by the needle needle mechanisms 17L and 17R. 26c. The selector 26 is selected by the combination of pressurization against the press needle butt 26c by the actuators of the needle needle mechanisms 17L and 17R. The selector 26 in the selected state rises from within the needle groove, so that the cam for acupuncture can act on the upper and lower butts 26a and 26b. If the needle 26c is pressed and the selector 26 sinks into the needle groove, it is in an unselected state.

A hook 28 is formed at the distal end of the needle body 21, enters the needle bed gap, and receives the knitting yarn. The hook 28 is opened and closed by the latch 29. In the position slightly retracted from the hook 28 of the needle body 21, the wing 30 which supports the stitch loop at the nose movement side at the time of nose movement is provided. As the knitting needle 20, not only such a latch needle, but also a compound needle for opening and closing the hook with a slider can be used.

FIG. 3 shows an example of the cam lock 16 and the pin needle mechanisms 17L and 17R mounted on the carriage 13b of FIG. 1 as seen from the cam surface side, which is the back side of FIG. The configuration of the carriage 13a is basically the same. Two pairs of cam locks 16 and first needle mechanisms 17L and 17R are mounted on one carriage 13b, for example. The pair of cam locks 16 divided by the center line 13c includes a receiving combined moving cam 31, a fixed needle raising cam 32, a movable needle raising cam 33, and a stitch cam. 34, needle guide cams 35 and 36; The needle needle mechanisms 17L and 17R are descending selector guide cams 37a, 37b and 37c, ascending selector guide cams 38a and 38b, selector raising cams 39a and 39b, and a needle selection actuator 40a. 40b or actuator 40c, 40d, tuck presser 41, half presser 42, fixed presser 43 and selector lift cam 44. In the drawing, the upper side is the needle bed gap side, and the receiving combined moving cam 31 and the movable needle laminating cam 33 are alternately switched so that the other does not protrude when one protrudes to the fingerboard of the carriage 13b. The stitch cam 34 can be moved in the inclined downward direction in order to adjust the stitch density which is the amount that the trailing side draws the knitting needle 20 from the needle bed gap. The jaw presser 41 and the half presser 42 can be controlled in appearance.

In the drawing, when the carriage 13b moves to the right, the cam needle 16 on the right side performs the main needle needle with the needle selection actuator 40a. In the preliminary needle, the butt of the select jack 25 is divided into the H position at the position where the tuck presser 41 and the half presser 42 are installed, or the B position at the position where the fixed presser 43 is provided. In position B, the selector 26 sinks into the needle groove and is not subject to the final needle. Since the selector 26 of the needle needle, which is selected by the preliminary needle, rises from the needle groove, when the needle is selected by the needle selection actuator 40a with the main needle, the butt 26b under the selector 26 moves to the needle bed gap side by the action of the selector rising cam 39a. Pushed up. As shown in Fig. 2, the tip of the selector 26 is located behind the butt 27 of the select jack 25. When the selector 26 is pushed up, the select jack 25 is pushed up to the position A on the needle bed gap side rather than the H position. When the butt 27 of the select jack 25 is pushed up to the A position, it is in a position where the jaw presser 41 and the half presser 42 are not pressed.

If the carriage 13b continues to the left on the knitting needle 20, the lower butt 26a is pushed away from the needle bed gap by the descending selector guide cam 37b, so that the selector 26 of the knitting needle 20 passes through the position of the selector floating cam 44. . The selector floating cam 44 floats the selector 26 uniformly from within the needle groove. During this time, the butt 27 of the select jack 25, which is selected in the B position, is pressed by the fixed presser 43, and the needle jack 22 sinks into the needle groove, so that the knitting movement butt 23 is not affected by the cam lock 16. Since the presser is not disposed on the guide path of the butt 27 of the select jack 25 which is selected in the A position, the butt 27 is not pressurized by the presser. On the guide path of the butt 27 of the select jack 25 affixed to the H position, the movable jaw presser 41 and the half presser 42 are disposed. Butt 27 selects whether or not to sink into the needle groove, depending on the action or non-action of the jaw presser 41 and the half presser 42, respectively. That is, when the jaw presser 41 or the half presser 42 acts, the butt 27 sinks into the needle groove and the needle jack 22 also sinks into the needle groove. In the H position, when the needle jack 22 does not sink into the needle groove and in the A position, the needle jack 22 remains injured from the needle groove, and the knitting movement butt 23 and the co-movement butt 24 are camlocked. 16, the knitting operation is performed. The stitch value in the knitting operation is adjusted to the position of the stitch cam 34 on the trailing side.

In each of the cam locks 16, the selector laser cams 39a, 39b, 39c, and 39d are provided on both sides of the travel direction. In the conventional flat knitting machine, the selector laser cams 39a, 39b, 39c, and 39d on both sides are interlocked so that the leading side protrudes and the trailing side enters each along the running direction. In the flat knitting machine 11 of the present embodiment, however, the selector lasing cams 39a and 39d at both ends of the carriage 13b are displacement driving cams, and each of them is allowed to stand out. At the time of tandem knitting in the flat knitting machine 11, the selector lasing cam 39a or the selector lasing cam 39d, which is the leading side only when infiltrating into the knitting areas 14a and 14b and the other knitting areas 14b and 14a to which the carriages 13a and 13b are allocated, respectively. Immerse it without protruding. For example, when starting left as shown in Fig. 1 (a), the selector lasing cam 39a provided in the tip needle mechanism 17L of the carriage 13a, which becomes the head side, is sunk. When starting the right as shown in Fig. 1 (b), the selector laser cam 39d provided in the first needle mechanism 17R of the carriage 13b is sunk. In the other case of the flat knitting machine 11, the selector laser cams 39a and 39d serving as the leading side are projected.

The selector 26 pressed by the descending selector guide cam 37b makes a needle against the cam lock 16 on the left side of the center line 13c by the needle selection actuator 40b and the needle selection actuator 40c. The selector 26 selected as the needle selection actuator 40b is pushed up along the projections formed on both sides of the center line 13c by the upward selector guide cam 38b to push the select jack 25 to the H position. However, the butt 27 of the select jack 25 is pushed down to position B by the projection of the needle guide cam 36 at the position of the center line 13c, and is pushed up to the position H again by the projection of the next selector guide cam 38b. The needle selection actuator 40c on the left side of the center line 13c continues to select the selector 26 in the selected state. As a result of the selection, the selector 26, which has been selected from the needle groove and rises from the needle groove, is acted upon by the selector rasing cam 39c in which the lower butt 26b protrudes, and pushes up the select jack 25 so that the butt 27 is positioned at the A position. When the needle selection actuator 40b is selected but the needle selection actuator 40c is not selected and the selector 26 sinks into the needle groove, it is not affected by the selector rasing cam 39c. Keep it. When the needle selection actuator 40d, which is the last end, passes through the knitting needle, a preliminary needle is made for the knitting operation next to the carriage 13b.

When the carriage 13b is right, the needle selection actuator 40d becomes the best head and the main needle of the cam lock 16 on the left side of the center line 13c is made, and the needle selection actuator 40a, which is the last end, moves to the cam lock 16 on the right side of the center line. Make a preliminary needle.

FIG. 4 shows a schematic sequence in which the controller 18 controls each part of the carriage 13b in the case of tandem knitting as shown in FIG. Here, the needle selection actuator 40a and the needle selection actuator 40b are denoted as actuator a and actuator b, respectively. The sequence starts from step a0, and it is determined whether or not the corresponding area is knitted in step a1 as in the knitting area 14b for the carriage 13b. When it is determined that the correspondence area is knitted, the knitting control is performed as described with reference to FIG. 3 in step a2. In Fig. 1 (a), the carriage 13b is left to start knitting of the knitting area 14b, so the setting for general knitting is made as in step a2.

The carriage 13a in Fig. 1 (a) or the carriage 13b before reaching Fig. 1 (b) is judged not to correspond to the corresponding area formation in step a1, and then proceeds to step a3 and is determined to be intrusion. It is judged that the carriage 13a before reaching FIG. 1 (a) is also intrusion. At the time of intrusion, the flow advances to step a4, in which the needle selection actuator 40a of the highest head is inactive to maintain the preselection state of the selector 26. Selector Raising Cam 39a is sunk. In general formation, the selector raising cam 39a on the front side protrudes and pushes up the selector 26, which is selected by the needle selection actuator 40a, to select the select jack 25 so that the butt 27 is in the A position, but invasion is performed. Don't let that happen. The jaw presser 41 and the half presser 42 are also protruded so that the knitting movement butt 23 of the needle jack 22 is not affected by the cam lock 16. The stitch cams 34 on both sides are also set to a stop position where the amount of lowering of the knitting dynamic action butt 23, such as the stitch position, is small. When the selector 26 of the knitting needle 20 of the intruded knitting region reaches the position of the selector floating cam 44, the non-spinning state in which the selector 26 sinks into the needle groove is eliminated. In addition, when the selector 26 reaches the position of the needle selection actuator 40b on the trailing side, the preliminary needle position is damaged, and the needle selection actuator 40b is actuated so that all of the needle selection actuators are in the non-needle state. The needle selection actuators 40c and 40d thereafter are actuated so that the butt 27 of the select jack 25 is in the B position.

If step a4 is finished or if it is determined in step a3 that no intrusion is made, the flow proceeds to step a5 to determine whether or not to escape. For example, it is determined that the carriage 13a of FIG. 1 (a) or the carriage 13b of FIG. 1 (b) are escaped. In case of escape, the flow advances to step a6. At the time of escape, a compensation needle needle for restoring the preliminary needle needle state is performed with the needle selection actuator 40a which is the last. For example, the carriage 13b does not originally perform the needle tip operation on the knitted region 14a. However, when the carriage 13b escapes, the knitted zone 14a is subjected to the same needle tip as the preliminary needle tip by the responsible carriage 13a. The selector 26, which does not reach the position of the selector floating cam 44 at the time of intrusion, is inserted into the selector rising cam 39a so that it is not affected. Therefore, the needle selection actuator 40a can be passed again by maintaining the state of the preliminary needle. . When the selector 26 reaches the position of the selector floating cam 44 and is injured, the needle selection by the needle selection actuator 40a becomes possible. Thus, the compensating needle tip which divides the butt 27 of the select jack 25 into the B position or the H position to return to the original preliminary needle point state is performed so that the carriage 13b escapes from the knitting area 14a and the carriage 13a is shown in FIG. When driving from the left side, the main needle can be made with the right needle mechanism 17R.

When step a6 ends, the flow returns to step a1. If it is determined in step a5 that it is not at the time of escape, it is determined whether or not the knitting is finished in step a7.

FIG. 5 shows another example of the cam lock 16 and the pin needle mechanisms 17L and 17R mounted on the carriage 13b of FIG. Such a structure is disclosed by patent document 4, for example. In Fig. 5, portions corresponding to those in Fig. 3 are denoted by the same reference numerals and redundant description thereof will be omitted. In the example of Fig. 5, the needle guide cams 45, 46, the downward selector guide cams 47a, 47b, 47c, and the ascending selector guide cams 48a, 48b are projected from the needle guide cams 35, 36, the downward selector guide of Fig. Different from the cam 37a, 37b, 37c, and the raise selector guide cam 38a, 38b, respectively. In addition, the width of the cam lock 16 is relatively smaller than that in FIG. In addition, the needle guide cams 45 and 46 are provided with select jack lowering cams 49a and 49b which can be controlled to go in and out. The select jack lowering cams 49a and 49b immerse the preceding side with respect to the cam lock 16 during the general knitting and protrude the trailing side.

FIG. 6 shows an example of a schematic procedure in which the controller 18 controls each part of the carriage 13b in the case of performing tandem knitting as shown in FIG. 1 with the configuration of FIG. Each step of step b0-step b8 corresponds to each step of step a0-step a8 of FIG. In the setting for general knitting of the correspondence area formation in step b2, the appearance control of alternating select jack lowering cams 49a and 49b is added to step a2 in FIG. Also in step b4 and step b6, step-and-step control is added to step a4 and step a6 to alternately perform the appearance of the select jack lowering cams 49a and 49b. However, at the time of escape of step b6, since the traveling direction is reversed, the preceding select jack lowering cam 49b is buried, and the following select jack lowering cam 49a is projected. At the time of intrusion, the butt 27 of the select jack 25 is lowered from the H position to the B position by protruding the select jack lowering cam 49b in step b4. This influence can be restored by the compensation needle of step b6. The select jack lowering cams 49c and 49b on the left side of the center line 13c in Fig. 5 also control the inlet of the leading side and the trailing side of the rear side.

Fig. 7 shows a procedure in the case where the select jack descent cams 49a, 49b, 49c, and 49d can be individually controlled. Each step of step c0 to step c8 corresponds to each step of step b0 to step b8 in FIG. If the select jack lowering cams 49a, 49b, 49c, and 49d can be individually controlled in appearance, the select jack lowering cams 49a and 49b are controlled by the mall in steps c4 and c6. In addition, the select jack descent cams 49c and 49d are also set as malls. As a result, it is possible to maintain the preliminary position of the select jack 25 which is preliminarily preliminarily positioned in the H position.

8 shows one example of the tandem knitting method according to the racking for moving the needle bed 12. FIG. In the flat knitting machine 11, a pair of needle beds 12 are provided before and after with the needle bed gap interposed therebetween. When the needle bed 12 is installed before and after, the function of racking for relatively moving the position of the needle bed 12 before and after is provided. By knitting using the needle beds 12 on both sides which can be racked, various knitted fabric tissues can be knitted. As shown in Fig. 1, the left and right carriages 13a and 13b are assigned to the knitted fabrics of the knitted region 14a on the left side and the knitted region 14b on the right side, respectively, to knit the knitted fabric.

Fig. 8 (a) shows a state where the carriages 13a and 13b are stopped once, as shown in Fig. 1 (a), when the carriage directions are reversed. The needle selection actuator 40a, which is the last end of each of the carriages 13a and 13b, performs preliminary needles on the knitting needles of the knitting regions 14a and 14b, respectively. The left end of each of the carriages 13a and 13b must move to the right of the right end of the knitting regions 14a and 14b. When the needle bed 12 is moved in the right direction by the racking, the distance D between the right end of the left knitting region 14a and the left end of the left carriage 13a needs to be widened in anticipation of the racking. That is, even if the needle bed 12 is moved to the right as shown in Fig. 8B, the gap D is secured in Fig. 8A so that the right end of the left knitting area 14a does not overtake the carriage 13a. Leave it.

As shown in Fig. 8A, the left carriage 13a invades the left side of the knitting area 14b assigned to the right carriage 13b. The knitting needle of the knitting area 14b is in a state of preliminary needle precipitating with the actuator 40a which is the last when the right carriage 13b is pulled out in the right direction, but a disturbance area 14d occurs in which the state of the preliminary needle needle is damaged by the intrusion of the left carriage 13a. do.

For the disturbance area 14d, the original preliminary needle position is restored to the needle selection actuator 40d which is the last when the carriage 13a is pulled out to the left. However, as shown in Fig. 8 (b), when the disturbance area 14d moves to the right side relative to the carriage 13a due to the racking in the right direction, the carriage 13a is disturbed only by inverting the driving direction and traveling in the left direction. On the right side of the region 14d, an area in which restoration to the preliminary needle point state is difficult is generated.

As shown in Fig. 8 (c), when the racking is completed, the carriage 13a is continued to the right until the position where the preliminary needle point of the damaged disturbance area 14d can be restored is continued. After the right end of the carriage 13a is deviated from the right end of the disturbance area 14d as shown in Fig. 8 (a), the carriage 13a is left by inverting the running direction of the carriage 13a as shown in Fig. 8 (d). When the compensation needle needle for restoring the preliminary needle position is performed by the needle selection actuator 40d at the end of the carriage 13a, the disturbance area 14d can be eliminated to return to the preliminary needle position. The carriage 13b is linked to the carriage 13a. Even when the carriages 13a and 13b are left as shown in Fig. 1 (b), if the same carriage is carried out in a range in which the right carriage 13b enters the knitting area 14a on the left side and disturbs the preliminary needle state, the racking Even if it is done, it is possible to restore the pre-needle state.

Fig. 9 shows a schematic system configuration of the controller 18 which enables the post-laking operation as described above in the flat knitting machine 11. In the flat knitting machine 11, carriages 13a and 13b are provided with respect to the front and rear needle beds 12, respectively. The needle needle of the needle needle by the needle selection actuators 40a, 40b, 40c, and 40d mounted on the carriages 13a and 13b is calculated by calculating the positions of the needle beds 12 of the carriages 13a and 13b. The carriages 13a and 13b do not directly detect the position with respect to the needle bed 12, but are detected by the position sensor 50 from a needle selection gauge separately provided in parallel with the needle bed 12 in the frame of the flat knitting machine 11. About the needle selection gauge, it is disclosed by Unexamined-Japanese-Patent No. 2003-091490 etc., for example. If the needle bed 12 moves relative to the carriages 13a and 13b by the racking when the carriages 13a and 13b are stopped with respect to the needle bed 12, the position detected by the position sensor 50 does not change. The positions of the carriages 13a and 13b with respect to the needle bed 12 can be obtained by correcting the position detected by the position sensor 50 on the basis of the frame of the flat knitting machine 11 by the movement width of the racking.

The controller 18 controls the carriages 13a and 13b provided in each of the needle beds 12 before and after the flat knitting machine 11 by the front carriage control unit 51 and the rear carriage control unit 52, respectively. The positions of the flat knitting machine 11 in the carriages 13a and 13b of each needle bed are magnetically formed by the unevenness and the light and shade stripes which are provided in the needle selection gauge corresponding to the pitch of the knitting needle. Alternatively, the carriage position two-phase signal detection unit 53 detects based on the output of the position sensor 50 that is optically detected. The amount of movement by the front and rear needle bed 12 is changed by the position of the needle bed 12 with respect to the frame of the flat knitting machine 11, and is detected by the front racking encoder 54 and the rear racking encoder 55, respectively. do. In the front and rear needle beds 12, the needle selection actuators 40a, 40b, 40c, and 40d of the carriage 13 are driven by the front actuator ON / OFF output section 56 and the rear actuator ON / OFF output section 57, respectively.

Since the inside of the front carriage control section 51 and the rear carriage control section 52 have basically the same configuration, only the front carriage control section 51 will be described, and the rear carriage control section 52 will be omitted. The former carriage control section 51 includes a unit conversion section 61, a carriage speed calculating section 62, a speed correcting section 63, and a line needle data storage section 64 as the software processing section 60. The hardware processing unit 70 includes a carriage position counter 71, an adder 72, an output position determiner 73, and an actuator ON / OFF setter 74.

The needle data stored in the needle data storage 64 is for the entire needle bed 12. This needle point data is output from the CPU80 which controls the knitting operation of the flat knitting machine 11 as a whole. The CPU 80 combines the data previously stored in the knitting fabric data storage unit 81 and the knitting machine parameter storage unit 82 as the knitting data 83, and outputs the needlepoint data for each knitting course. In the knitted fabric data storage 81, data relating to the shape and shape of the knitted fabric to be knitted, the knitting yarn to be used, and the like are previously created and stored. In the knitting machine parameter storage unit 82, parameters necessary for knitting in the flat knitting machine 11 are stored. On the basis of the data for each course output by the CPU80, the carriage driver 84 controls the direction, speed, and travel range in which the carriage 13 is driven. The racking of the front and rear needle beds 12 is moved by the rack driving unit 85 driving the racking mechanisms of the front and rear needle beds 12 on the basis of the data output from the CPU80.

The positions of the carriages 13a and 13b with respect to the front and rear needle beds 12 are input to the CPU 80 as the output of the adder 72. The unit converting unit 61, the carriage speed calculating unit 62, the speed compensating unit 63, the carriage position counter 71 and the adder 72 calculate the position of the carriage 13 relative to the needle bed 12. The CPU 80 can control to select the knitting needle even during the movement of the needle bed 12 by the racking based on the positions of the carriages 13a and 13b with respect to the needle bed 12.

Fig. 10 shows an example of the tandem knitting needle tip method of performing needle needle even during lacing. In Fig. 10A, as shown in Fig. 8A, the carriage 13a on the left penetrates into the knitting area 14b on the right side, and the disturbance area 14d is generated.

Fig. 10 (b) shows a state in which the racking for moving the needle bed 12 to the right direction is performed while the carriages 13a and 13b are stopped. The movement of the racking is the same as in Fig. 8 (b). In FIG. 10 (b), part of the compensation line needle is executed by using the same thing as when the disturbance area 14d moves to the right side with respect to the carriage 13a, and the carriage 13a is left to start escape from the disturbance area 14d. do. That is, the needle selection actuator 40d at the right end of the carriage 13a becomes the rearmost end and compensates for the needle needle of the disturbance area 14d to restore the preliminary needle needle state. As a result, the right part of the disturbance area 14d returns to the preliminary needle point state of the right knitting area 14b.

As shown in Fig. 10 (c), when the carriages 13a and 13b reverse the traveling direction and start left, the knitting needle of the disturbing area 14d where the carriage 13a invades as the knitting area 14b on the right and the preliminary needle state is damaged, The reserve needle state is restored by the compensation needle needle when the carriage 13a escapes. The needle by the needle selection actuator 40a at the left end when each of the carriages 13a and 13b enters the knitting regions 14a and 14b from the right direction becomes the main needle to the preliminary needle state. As shown in Fig. 10, when the needle is made using the movement by the racking, further travel of the carriages 13a and 13b as shown in Fig. 8 (c) can be avoided, and the knitting efficiency can be increased.

In addition, during the movement of the needle bed 12 by the locking as shown in FIG. 10 (b), the inverted running of the carriages 13a and 13b as shown in FIG. 10 (c) can be started. It is also possible to start racking before the carriages 13a and 13b stop in the right direction in Fig. 10A. The position of each carriage 13a, 13b with respect to the needle bed 12 can be computed by the detection value of the position sensor 50, and the movement amount of the racking detected by the front racking encoder 54 and the back racking encoder 55, respectively. The position of the carriages 13a and 13b relative to the needle bed 12 can be known even when the driving of the carriages 13a and 13b is combined with the movement of the racking. Therefore, the racking can be improved during the carriages of the carriages 13a and 13b to improve the knitting efficiency.

As described above, in the flat knitting machine 11 shown in Fig. 1, each of the needle needle mechanisms 17L and 17R provided on both sides of the carriages 13a and 13b is divided into a preliminary needle at the end and a main needle at the head after the reverse of the driving direction. Since stepping is performed in each step, it is possible to prevent the installation space required by the tipping mechanisms 17L and 17R from increasing as compared with the case of performing two-stepping in succession at the head side along the running direction. Since the installation spaces of the front needle mechanisms 17L and 17R do not increase, the width in the longitudinal direction of the needle beds 12 of the carriages 13a and 13b also does not increase, and the increase in the stroke for reciprocating travel can also be avoided. Moreover, although tandem knitting is carried out by two carriages 13a and 13b, of course, three or more carriages may be used.

Fig. 1 is a block diagram schematically showing a schematic configuration of a flat knitting machine 11 that performs tandem knitting as an example of the practice of the present invention.

FIG. 2 is a side view showing an example of the configuration of the knitting needle 20 provided side by side on the needle bed 12 of the flat knitting machine 11 of FIG.

FIG. 3 is a cam arrangement view showing an example of the cam lock 16 and the needle tip mechanisms 17L and 17R mounted on the carriage 13b of FIG. 1 as seen from the cam surface side which is the back side of FIG.

FIG. 4 is a flowchart showing a schematic procedure in which the controller 18 controls each part of the carriage 13b in the case of tandem knitting as shown in FIG.

FIG. 5 is a cam arrangement diagram showing another example of the cam lock 16 and the pin needle mechanisms 17L and 17R mounted on the carriage 13b of FIG.

FIG. 6 is a flow chart showing an example of a schematic sequence in which the controller 18 controls each part of the carriage 13b in the case of performing tandem knitting as shown in FIG. 1 with the configuration of FIG.

FIG. 7 is a flow chart showing another example of the schematic procedure in which the controller 18 controls each part of the carriage 13b when the tandem knitting as shown in FIG. 1 is performed with the configuration of FIG.

FIG. 8 is a diagram schematically showing an example of the operation in the case of laking in the tandem knitting by the flat knitting machine 11 of FIG.

FIG. 9 is a block diagram showing the schematic system configuration of the controller 18 which enables the tandem knitting operation involving racking in the flat knitting machine 11 of FIG.

FIG. 10 is a diagram schematically showing another example of the operation in the case of laking in the tandem knitting by the flat knitting machine 11 of FIG.

Fig. 11 is a block diagram schematically showing a schematic configuration of tandem knitting in the conventional flat knitting machine 1 which performs preliminary needle needle.

* Description of the symbols for the main parts of the drawings *

11 Flat Knitting Machine

12 needle bed

13a, 13b carriage

14a, 14b knitting area

16 Camlock

17L, 17R needle needle mechanism

18 controller

20 needles

25 select jack

26 selector

39a, 39b, 39c, 39d selector raising cam

40a, 40b, 40c, 40d needle selection actuator

49a, 49b, 49c, 49d select jack clearing cam

Claims (4)

The flat knitting machine is equipped with a cam mechanism for single needle driving, and a plurality of carriages reciprocating along the length direction of the needle bed are used, and an area of the needle bed set so as not to overlap is allocated to each carriage, and a plurality of knitting fabrics are simultaneously In the tandem knitting method to knit, Preliminary needle needle of the needle needle by the needle tip mechanism which becomes the last when the cam mechanism mounted by each carriage escapes from the area | region assigned to the said carriage among the needle needle mechanisms provided in the both sides of a travel direction. (I) to leave the preliminary needle tip state, and the needle tip mechanism becomes the best tip needle when the carriage reverses the driving direction and enters the area again, and the main needle tip is made against the needle needle in the preliminary needle point state. Leave, Even if a carriage assigned to another area enters the pre-needle state area and changes the pre-needle state of the needle needle, when the carriage escapes from the invaded area, a compensation needle is applied to the needle needle pre-needle in the intruded area. Tandem knitting method characterized in that to restore the state. Tandem for mounting a plurality of knitted fabrics simultaneously by using a cam mechanism for knitting needle driving, using a plurality of carriages reciprocating along the length direction of the needle bed, and assigning each carriage an area of a needle bed that is set so as not to overlap. In the knitting machine which knitting is possible, The cam mechanism mounted on each carriage is provided with a pin needle mechanism on both sides of the travel direction, and leaves a preliminary needle tip state by preliminary needle needle preliminary needle by a needle tip mechanism which is the last when escaping from the area allocated to the carriage. The needle tip mechanism becomes the head tip device when the carriage reverses the driving direction and enters the area again, and performs the main needle needle against the partial needle in the preliminary needle position. Even if a carriage assigned to another area invades the area of the preliminary needle state and changes the state of the preliminary needle state, a compensation needle is applied when the carriage escapes from the invaded area, and the preneedle state of the single needle in the invaded area is changed. Flat knitting machine comprising a control means for controlling to restore. The method of claim 2, The control means controls the needle tip mechanism which is the best head when the carriage assigned to the other area invades the zone of the preliminary needle needle state so as to be inoperative with respect to the needle needle in the prenee needle state. Knitting. The method of claim 3, The needle mechanism includes an actuator which acts on the needle for butt of each needle to switch between a needle needle state in which each needle needle is injured from within the needle groove or a non-needle state sinking in the needle groove. And a displacement driving cam that can switch whether or not to act to cause the needle needle in the needle position to rotate in a needle groove to a predetermined selected position. And said control means switches said actuator to be inactive while controlling said first needle mechanism to be inactive, and also switches said cam for displacement drive to be inactive.

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