KR102717410B1 - Method for knitting pile knitted fabric by flat knitting machine - Google Patents

Abstract

(assignment)
The present invention provides a method for knitting a file knitting fabric having excellent knitting efficiency.
(composition)
In a course where pile formation is performed by installing a root conversion cam (17), both pile yarns and binding yarns are introduced into the cam system on the side that becomes the base of the knitting fabric by SYS1, and only pile yarns are introduced into the cam system on the side that forms the pile loop, and with the subsequent SYS2, additional yarns are introduced into the cam system on the side that becomes the base of the knitting fabric, and the pile loops are removed from the cam system on the side that forms the pile loop.

Description

METHOD FOR KNITTING PILE KNITTED FABRIC BY FLAT KNITTING MACHINE

The present invention relates to a method for knitting a pile knitting fabric using a horizontal knitting machine.

A pile knit fabric is formed by forming a base of a pile knit fabric with stitches using pile yarns and binding yarns by the knitting needles of one of the front needle beds (hereinafter referred to as FB) and the back needle bed (hereinafter referred to as BB), and forming a pile loop made only of pile yarns on the back side of the base by the knitting needles of the other needle bed.

Patent Document 1 discloses a method for knitting a pile knitting fabric using a flat knitting machine equipped with a sinker device. However, the method described in Patent Document 1 cannot be knitted using a flat knitting machine that does not have a sinker device for drawing out pile yarn.

Fig. 3 shows a method for knitting a pile knitted fabric by a method different from that of Patent Document 1. In this method, an example is shown in which stitches using additional yarns are added to the knitting of the base of the pile knitted fabric in addition to stitches using pile yarns and binding yarns. By adding stitches using additional yarns in addition to stitches using pile yarns and binding yarns as the base stitches, there is an advantage in that the pile loops can be tightened so that they do not become loose.

Fig. 3 shows an arrangement using a carriage equipped with two cam systems, a cam system (SYS1) on the leading side and a cam system (SYS2) on the trailing side. The yarn feeder (P) is for pile yarn (31), and the yarn feeder (B) is for binding yarn (33). Pile yarn (31) is assigned to SYS1, and binding yarn (33) is assigned to SYS2.

In step (1), the needles of FB and BB are advanced and retreated in SYS1 to introduce the pile yarn (31). At this time, the needle of FB is advanced to a degree that the old stitch formed in the previous course does not knock over from the leading edge of the needle, and while maintaining this state, it is guided to the subsequent SYS2. In SYS2, without operating the needle of BB, only the needle of FB in the above state is advanced and retreated again to insert the binding yarn (33). Accordingly, the needle of FB advances and retreats both the pile yarn (31) and the binding yarn (33), thereby knocking over the old stitch, and forming the first stitch course that becomes the base of the pile knitted fabric.

In step (2), additional yarn (35) is fed to the FB needle by the yarn feeder (A) in SYS1 to form the second stitch course of the base knitted fabric. In SYS2, the knitting needle of BB is advanced and retreated without feeding the knitting yarn, and the pile loop formed in SYS1 of step (1) is separated from the knitting needle. Furthermore, in step (2), either SYS1 or SYS2 knitting may be performed first. By repeating the knitting of steps (1) and (2), the pile knitted fabric is knitted, but due to the relationship between the waiting positions of each yarn feeder, as shown in step (3), an empty course in which only the carriage moves without knitting occurs, and therefore, in order to complete one cycle of knitting, the carriage needs to move three courses.

Japanese Patent Application Publication No. 60-59333

In the method by Fig. 3, in SYS1 of step (1), it is necessary to adjust the height of the stitch cam or remove it so that the knitting needle of the FB does not knock over the old stitch formed in the previous course from the tip of the needle. In addition, in order to knit a pile knitting fabric with additional yarns with two cam systems, movement of three courses of carriages is required, which greatly reduces productivity. For example, in order to complete knitting with one course of carriage, a carriage equipped with at least four cam systems is required. Therefore, a knitting method for a knitting fabric that can be knitted efficiently is desired. The present invention provides a knitting method for a pile knitting fabric with excellent knitting efficiency.

The present invention uses a horizontal knitting machine having at least two cam systems in each of front and rear carriages that reciprocate on front and rear needle beds on which a plurality of knitting needles are arranged.

In the cam system on the leading side, pile yarns and binding yarns are fed, and a first stitch course, which is the base of a pile knitted fabric, is formed by stitching the pile yarns and binding yarns by the knitting needles of one needle bed on the front and rear sides, and a pile loop made only of pile yarns is formed on the reverse side of the base by the knitting needles of the other needle bed, and in the cam system on the trailing side, additional yarns are fed to form a second stitch course that continues the first stitch course.

A method of organizing a file organization by repeatedly performing organization,

Each cam system has:

A needle raising cam having a rising cam surface that raises the butt provided on the above-mentioned needle, and that advances the above-mentioned needle,

A stitch cam having a first inlet surface for lowering the butt and lowering the needle is installed, and in addition, in each cam system of a carriage forming a pile loop among the front and rear carriages, a route switching cam having a second inlet surface for lowering the butt and capable of switching between an operating state and a non-operating state is installed on the preceding side of the first inlet surface of the stitch cam.

In the cam system on the leading side, two yarn feeding slots are assigned, a pile yarn to the leading side feeding slot and a binding yarn to the trailing side feeding slot, and in the cam system forming the pile loop, the root switching cam is put into an operating state so that the knitting needle bites only the pile yarn among the pile yarn and the binding yarn, and in the cam system forming the base of the pile knitted fabric, the knitting needle bites both the pile yarn and the binding yarn, thereby forming the first stitch course which becomes the base of the pile knitted fabric.

In the cam system on the trailing side, an additional use feeding hole is assigned to the trailing side corresponding to the above-mentioned binding yarn continuous arrangement, and in the cam system on the side that drops the pile loop formed in the cam system on the leading side from the knitting needle, by bringing the root switching cam into an operating state, the knitting needle does not bite the additional yarn but only drops the pile loop, and in the cam system on the side that forms the base of the pile knitting fabric, the knitting needle bites the additional yarn to form a second stitch course that becomes the base of the pile knitting fabric.

Preferably, a root change cam is installed in each of the front and rear cam systems so that a pile loop can be formed by either the front or rear cam system, and a course in which a pile is formed by putting the root change cam of one of the front and rear cam systems in the operating state and a course in which a pile is formed by putting the root change cam of the other of the front and rear cam systems in the operating state are mixed and formed, thereby forming a pile loop on the front and rear of the pile formation fabric.

In the present invention, in the course where pile knitting is performed, both pile yarns and binding yarns are introduced in the cam system on the side that serves as the base of the knitting fabric, but in the cam system on the side that forms the pile loop, only the preceding pile yarns are introduced because the root switching cam is in the operating state. As a result, knitting using pile yarns and binding yarns can be completed with a single cam system, and knitting of additional yarns and removal of the pile loop can also be completed with a single subsequent cam system. Therefore, if a horizontal knitting machine equipped with at least two cam systems on the carriage is used, even when adding a stitch using additional yarns to knitting of a pile knitting fabric, course knitting of a pile knitting fabric can be performed with just one movement of the carriage.

In addition, if a route change cam is installed in each of the front and rear cam systems, a pile loop can be formed by either the front or rear cam system. Accordingly, a knitted fabric having a pile loop formed on both the front and rear (front and rear) of the base of the knitted fabric can be obtained.

Figure 1 is a drawing showing the correspondence between a cam system (SYS1) that performs file organization according to an embodiment and a knitting needle.
Figure 2 is a drawing showing a cam system (SYS2) that performs file organization according to an embodiment.
Figure 3 is a drawing showing file organization using a conventional horizontal knitting machine.

Below, embodiments of the present invention are described based on the drawings.

In the embodiment, an example using a two-bed horizontal knitting machine is described. The horizontal knitting machine is provided with two cam systems (3) and a plurality of yarn feeding ports on front and rear carriages that reciprocate on FB and BB, on which a plurality of needles (1) are arranged. In addition, the driving method of the cam or presser mounted on the cam system (3), the configuration of the needle bed, the needle selection method, etc. are the same as those of the publicly known horizontal knitting machine disclosed in Japanese Patent No. 5057996, etc., and therefore the description thereof is omitted. In addition, the present embodiment is an example in which the route change cam described later is installed on each of the front and rear cam systems (3).

Fig. 1 is a schematic explanatory diagram showing the corresponding relationship between the needle (1) and the cam system (3). SYS1 and SYS2 have the same configuration. The needle (1) is equipped with a needle body (5), a needle jack (7), a select jack (9), and a selector (11). The needle jack (7) is provided with a butt (7a) for advancing and retreating the needle (1), and the select jack (9) is provided with a butt (9a) for selecting positions A, H, and B. In the drawing, the select jack (9) is set to the middle H position.

The cam system (3) is a cam system capable of performing knit, tuck, and miss, but may also be a composite cam system capable of transferring stitches. The drawing shows the state of SYS1 when the cam system (3) runs to the left and performs knitting. The cam system (3) is equipped with a plurality of cams acting on a butt (7a) and a plurality of pressers acting on a butt (9a). A needle raising cam (13) arranged in the center and stitch cams (15, 15) and root changing cams (17, 17) installed on the left and right with the needle raising cam (13) interposed therebetween act on the butt (7a).

The needle raising cam (13) has a rising cam surface (13a) that acts on the butt (7a) to raise the knitting needle (1) to the knitting position. The stitch cam (15) has a first entry surface (15a) that lowers the butt (7a). In normal knitting such as knitting or tucks, the butt (7a) passes the route change cam (17) as it is and is guided by the first entry surface (15a) of the stitch cam (15) to pass through the entry route (normal route). In the case of pile knitting, in the cam system (3) that knits the base of the knitted fabric that does not form a pile loop, the butt (7a) passes through the normal route.

The welt presser (19) is positioned at the B position, which is the initial position of the needle, and presses the select jack (9) that is not needled to cause the knitting needle (1) to miss. The tuck presser (21) is positioned at the A position, and the root change presser (23) is installed on the left and right of this. The root change cam (17) acts to bite the pile yarn (31) on the knitting needle (1) and not bite the binding yarn (33), and is positioned above the first inlet surface (15a) of the stitch cam (15). The root change cam (17) is provided with a second inlet surface (17a) that lowers the butt (7a).

The root switching cam (17) is configured to have a thickness approximately half that of the stitch cam (15) or the needle raising cam (13), and the amount of pressure applied to the butt (9a) of the root switching presser (23) is configured to be approximately half that of the welt presser (19) or the tuck presser (21) (half-height presser). In this case, since the butt (9a) of the select jack (9) is pressed in only half by the root switching presser (23), the butt (7a) of the needle jack (7) also sinks in only half. As a result, the butt (7a) passes through without being acted upon by the root switching cam (17) and is drawn in by the first engaging surface (15a) of the stitch cam (15).

The root switching presser (23) is driven by a driving means such as a solenoid, and is configured to be able to swing between a raised non-working position as shown on the left side of the drawing and a lowered working position (H position) as shown on the right side of the drawing. Instead of the above, the root switching presser (23) may be configured to be able to switch between the working position and the non-working position by controlling the rising and falling of the presser by a driving means such as a solenoid. Regarding the feeders, a preceding feeder (P) that feeds pile yarn (31) and a succeeding feeder (B) that feeds binding yarn (33) are driven while maintaining the positions shown in the drawing with respect to the cam system.

Below, the knitting of a pile knitting fabric by a horizontal knitting machine equipped with the cam system (3) is described. As an example, the base of the pile knitting fabric is formed by a knitting needle of FB, and the pile loop is formed by a knitting needle of BB.

Fig. 1 shows the state of SYS1 forming the base (first stitch course) of the pile knitting fabric when the carriage runs to the left. The butt (9a) of the select jack of the knitting needle (1) is set to the H position, the leading-side root change presser (23) is set to the non-operating position, and the trailing-side root change presser (23) is set to the H position, respectively. On the other hand, in the cam system of BB (not shown in the drawing) forming the pile loop, the knitting needle (1) is set to the H position, and the root change presser (23) is set to the non-operating position where both the leading and trailing are raised.

In position Ⅰ, since the butt (9a) of the select jack (9) which is set to the H position of FB and BB is not affected by any presser, the knitting needle (1) can advance to the knit position and hook the pile yarn (31). However, in the subsequent position Ⅱ, since the butt (9a) of the cam system (3) of FB which forms the base of the knitted fabric is affected by the presser (23) of the root change presser, the knitting needle (1) passes by as it is without being affected by the second entry surface (17a) of the root change cam (17). As a result, the knitting needle (1) maintains almost the same state as in position Ⅰ, and can also hook the binding yarn (33) fed from the following yarn feeder (B). After that, the first stitch course, which becomes the base of the pile knitting fabric, is formed by lowering the first inlet surface (15a) of the subsequent stitch cam (15) with both the pile yarn (31) and the binding yarn (33).

In this regard, in the cam system (3) of BB forming the pile loop, since the root change presser (23) is in the non-acting position, the butt (9a) is lowered along the second entry surface (17a) of the root change cam (17) and then further lowered by the first entry surface (15a) of the stitch cam (15). That is, since the knitting needle (1) is lowered before the binding yarn (33) is fed, only the pile yarn (31) is hooked on the knitting needle (1).

Fig. 2 shows the state of SYS2 forming the base (second stitch course) of the pile knitting fabric. Except that a feeder (A) for additional yarn (35) is allocated to the trailing side corresponding to the continuous arrangement of the binding yarn (33) in SYS1, SYS2 is the same state as SYS1. That is, in position I, since neither of the butts (9a) of the select jack (9) needled to the H position of FB and BB is affected by any presser, the knitting needle (1) advances to the knit position. However, in the subsequent position II, the butt (9a) of FB forming the base of the knitting fabric is subject to the pressurizing action of the root change presser (23), and passes without being affected by the second leading surface (17a) of the root change cam (17). As a result, since the needle (1) maintains almost the same height as position I, after the additional yarn (35) from the needle hole (A) is hooked, it is lowered by the first insertion surface (15a) to form a second stitch course that becomes the base of the pile knitting fabric.

In this regard, in BB, in the case where the needle has advanced to the knit position, since the root change presser (23) is in the non-working position, the butt (9a) is lowered along the second entry surface (17a) of the root change cam (17) and then further lowered by the first entry surface (15a). That is, since the needle (1) is lowered before receiving the supply of the additional yarn (35), the pile loop formed in SYS1 is dropped from the needle.

For this operation, two cam systems are used, and knitting is performed using pile yarn (31) and binding yarn (33) by SYS1, and the pile loop is removed from the knitting needle (1) of the BB by moving it forward and backward without abruptly by SYS2, and at the same time, course knitting is performed using additional yarn (35) by the knitting needle (1) of the FB. Therefore, knitting can be completed with one carriage movement (one course). By repeatedly performing this knitting, the knitting of a pile knitting fabric (single-sided pile) having a pile loop on the back side of the base of the knitting fabric can be performed with a dramatically higher productivity than in the past.

In order to form a pile loop by either the front or rear cam system (3), a root change cam (17) may be installed on each of the front and rear cam systems (3). By mixing and organizing a course in which pile formation is performed by putting the root change cam (17) of one of the front and rear cam systems (3) in the operating state for each carriage movement course and a course in which pile formation is performed by putting the root change cam (17) of the other of the front and rear cam systems (3) in the operating state, it is possible to organize a pile formation fabric (double-sided pile) having pile loops on both the front and back of the base of the formation fabric.

In addition, the knitting method of the present application can also be applied to knitting of a tubular knitted fabric of a pile by a half gauge. In the case of forming a pile loop on the inside of a tubular knitted fabric, knitting is performed in the same manner as the knitting method described above, and knitting of each front and back knitted fabric can be completed with one movement of the carriage (one course) each. In the case of forming a pile loop on the outside of a tubular knitted fabric, knitting of each front and back knitted fabric can be completed with one movement of the carriage (one course) each by a carriage equipped with four composite cam systems capable of transfer.

1 : Bed
3: Cam system
5: Needle body
7 : Needle Jack
7a : Burt
9: Select Jack
9a : Burt
11 : Selector
13: Needle Raising Cam
13a: Rising cam surface
15 : Stitch Cam
15a: First person entrance
17: Route conversion cam
17a: Second person entrance
19: Welt presser
21: Chin presser
23: Root Conversion Presser
31 : File Saga
33 : Binding
35 : Additional
P, B, A: sudden death

Claims (2)

Using a horizontal knitting machine having at least two cam systems on each of the forward and backward carriages that reciprocate on the forward and backward needle beds on which multiple knitting needles are arranged,
In the cam system on the leading side of the front and rear carriages , pile yarn and binding yarn are fed, and a first stitch course, which is a base of a pile knitted fabric, is formed by stitching the pile yarn and binding yarn by the knitting needles of one front and rear needle bed, and a pile loop made only of pile yarn is formed on the back side of the base by the knitting needles of the other needle bed, and in the cam system on the trailing side of the front and rear carriages , an additional yarn is fed to form a second stitch course that continues the first stitch course.
A method of organizing a file organization by repeatedly performing organization,
In each cam system of the above front and rear carriages ,
A needle raising cam having a rising cam surface that raises a butt provided on the above-mentioned needle, and that advances the above-mentioned needle;
A stitch cam having a first inlet surface for lowering the butt and lowering the needle is installed, and in addition, in each cam system of a carriage forming a pile loop among the front and rear carriages, a route switching cam having a second inlet surface for lowering the butt and capable of switching between an operating state and a non-operating state is installed on the preceding side of the first inlet surface of the stitch cam.
In the cam system on the leading side of the carriage above ,
In addition to assigning two yarn feeding slots, a pile yarn to the leading side feeding slot and a binding yarn to the trailing side feeding slot, in one cam system of the front and rear sides forming the pile loop, the root switching cam is put into operation so that the knitting needle bites only the pile yarn among the pile yarn and the binding yarn, and in the other cam system of the front and rear sides forming the base of the pile knitted fabric, the knitting needle bites both the pile yarn and the binding yarn, thereby forming a first stitch course that becomes the base of the pile knitted fabric.
In the cam system on the trailing side of the carriage above ,
In addition to assigning an additional use fastening hole to the trailing side corresponding to the above-mentioned binding yarn's continuous arrangement, in one cam system of the front and rear sides that drops the pile loop formed by the cam system of the leading side from the knitting needle, by making the root switching cam in an operating state, the knitting needle does not bite the additional yarn but only drops the pile loop, and in the other cam system of the front and rear sides that forms the base of the pile knitting fabric, the knitting needle bites the additional yarn, thereby forming a second stitch course that becomes the base of the pile knitting fabric.
A method for knitting a pile knitting fabric using a horizontal knitting machine characterized by the following.
In the first paragraph,
A method for knitting a pile knitting fabric using a horizontal knitting machine, characterized in that a pile loop is formed on the front and back of the pile knitting fabric by installing a root change cam on each of the front and rear cam systems so that a pile loop can be formed by either the front or rear cam system, and by mixing and knitting a course in which a pile is formed by putting the root change cam of one of the front and rear cam systems in the operating state and a course in which a pile is formed by putting the root change cam of the other of the front and rear cam systems in the operating state.